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-power.h"
41 #include "iwl-helpers.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 }
63 EXPORT_SYMBOL(iwl_debug_level);
65 static irqreturn_t iwl_isr(int irq, void *data);
69 * rate, ht rate, prev rate, next rate, prev tgg rate, next tgg rate
71 * If there isn't a valid next or previous rate then INV is used which
72 * maps to IWL_RATE_INVALID
75 const struct iwl_rate_info iwl_rates[IWL_RATE_COUNT] = {
76 IWL_DECLARE_RATE_INFO(1, INV, INV, 2, INV, 2, INV, 2), /* 1mbps */
77 IWL_DECLARE_RATE_INFO(2, INV, 1, 5, 1, 5, 1, 5), /* 2mbps */
78 IWL_DECLARE_RATE_INFO(5, INV, 2, 6, 2, 11, 2, 11), /*5.5mbps */
79 IWL_DECLARE_RATE_INFO(11, INV, 9, 12, 9, 12, 5, 18), /* 11mbps */
80 IWL_DECLARE_RATE_INFO(6, 6, 5, 9, 5, 11, 5, 11), /* 6mbps */
81 IWL_DECLARE_RATE_INFO(9, 6, 6, 11, 6, 11, 5, 11), /* 9mbps */
82 IWL_DECLARE_RATE_INFO(12, 12, 11, 18, 11, 18, 11, 18), /* 12mbps */
83 IWL_DECLARE_RATE_INFO(18, 18, 12, 24, 12, 24, 11, 24), /* 18mbps */
84 IWL_DECLARE_RATE_INFO(24, 24, 18, 36, 18, 36, 18, 36), /* 24mbps */
85 IWL_DECLARE_RATE_INFO(36, 36, 24, 48, 24, 48, 24, 48), /* 36mbps */
86 IWL_DECLARE_RATE_INFO(48, 48, 36, 54, 36, 54, 36, 54), /* 48mbps */
87 IWL_DECLARE_RATE_INFO(54, 54, 48, INV, 48, INV, 48, INV),/* 54mbps */
88 IWL_DECLARE_RATE_INFO(60, 60, 48, INV, 48, INV, 48, INV),/* 60mbps */
89 /* FIXME:RS: ^^ should be INV (legacy) */
91 EXPORT_SYMBOL(iwl_rates);
94 * translate ucode response to mac80211 tx status control values
96 void iwl_hwrate_to_tx_control(struct iwl_priv *priv, u32 rate_n_flags,
97 struct ieee80211_tx_info *info)
99 struct ieee80211_tx_rate *r = &info->control.rates[0];
101 info->antenna_sel_tx =
102 ((rate_n_flags & RATE_MCS_ANT_ABC_MSK) >> RATE_MCS_ANT_POS);
103 if (rate_n_flags & RATE_MCS_HT_MSK)
104 r->flags |= IEEE80211_TX_RC_MCS;
105 if (rate_n_flags & RATE_MCS_GF_MSK)
106 r->flags |= IEEE80211_TX_RC_GREEN_FIELD;
107 if (rate_n_flags & RATE_MCS_HT40_MSK)
108 r->flags |= IEEE80211_TX_RC_40_MHZ_WIDTH;
109 if (rate_n_flags & RATE_MCS_DUP_MSK)
110 r->flags |= IEEE80211_TX_RC_DUP_DATA;
111 if (rate_n_flags & RATE_MCS_SGI_MSK)
112 r->flags |= IEEE80211_TX_RC_SHORT_GI;
113 r->idx = iwl_hwrate_to_mac80211_idx(rate_n_flags, info->band);
115 EXPORT_SYMBOL(iwl_hwrate_to_tx_control);
117 int iwl_hwrate_to_plcp_idx(u32 rate_n_flags)
122 if (rate_n_flags & RATE_MCS_HT_MSK) {
123 idx = (rate_n_flags & 0xff);
125 if (idx >= IWL_RATE_MIMO3_6M_PLCP)
126 idx = idx - IWL_RATE_MIMO3_6M_PLCP;
127 else if (idx >= IWL_RATE_MIMO2_6M_PLCP)
128 idx = idx - IWL_RATE_MIMO2_6M_PLCP;
130 idx += IWL_FIRST_OFDM_RATE;
131 /* skip 9M not supported in ht*/
132 if (idx >= IWL_RATE_9M_INDEX)
134 if ((idx >= IWL_FIRST_OFDM_RATE) && (idx <= IWL_LAST_OFDM_RATE))
137 /* legacy rate format, search for match in table */
139 for (idx = 0; idx < ARRAY_SIZE(iwl_rates); idx++)
140 if (iwl_rates[idx].plcp == (rate_n_flags & 0xFF))
146 EXPORT_SYMBOL(iwl_hwrate_to_plcp_idx);
148 int iwl_hwrate_to_mac80211_idx(u32 rate_n_flags, enum ieee80211_band band)
153 /* HT rate format: mac80211 wants an MCS number, which is just LSB */
154 if (rate_n_flags & RATE_MCS_HT_MSK) {
155 idx = (rate_n_flags & 0xff);
157 /* Legacy rate format, search for match in table */
159 if (band == IEEE80211_BAND_5GHZ)
160 band_offset = IWL_FIRST_OFDM_RATE;
161 for (idx = band_offset; idx < IWL_RATE_COUNT_LEGACY; idx++)
162 if (iwl_rates[idx].plcp == (rate_n_flags & 0xFF))
163 return idx - band_offset;
169 u8 iwl_toggle_tx_ant(struct iwl_priv *priv, u8 ant)
173 for (i = 0; i < RATE_ANT_NUM - 1; i++) {
174 ind = (ind + 1) < RATE_ANT_NUM ? ind + 1 : 0;
175 if (priv->hw_params.valid_tx_ant & BIT(ind))
181 const u8 iwl_bcast_addr[ETH_ALEN] = { 0xFF, 0xFF, 0xFF, 0xFF, 0xFF, 0xFF };
182 EXPORT_SYMBOL(iwl_bcast_addr);
185 /* This function both allocates and initializes hw and priv. */
186 struct ieee80211_hw *iwl_alloc_all(struct iwl_cfg *cfg,
187 struct ieee80211_ops *hw_ops)
189 struct iwl_priv *priv;
191 /* mac80211 allocates memory for this device instance, including
192 * space for this driver's private structure */
193 struct ieee80211_hw *hw =
194 ieee80211_alloc_hw(sizeof(struct iwl_priv), hw_ops);
196 printk(KERN_ERR "%s: Can not allocate network device\n",
207 EXPORT_SYMBOL(iwl_alloc_all);
209 void iwl_hw_detect(struct iwl_priv *priv)
211 priv->hw_rev = _iwl_read32(priv, CSR_HW_REV);
212 priv->hw_wa_rev = _iwl_read32(priv, CSR_HW_REV_WA_REG);
213 pci_read_config_byte(priv->pci_dev, PCI_REVISION_ID, &priv->rev_id);
215 EXPORT_SYMBOL(iwl_hw_detect);
217 int iwl_hw_nic_init(struct iwl_priv *priv)
220 struct iwl_rx_queue *rxq = &priv->rxq;
224 spin_lock_irqsave(&priv->lock, flags);
225 priv->cfg->ops->lib->apm_ops.init(priv);
226 iwl_write32(priv, CSR_INT_COALESCING, 512 / 32);
227 spin_unlock_irqrestore(&priv->lock, flags);
229 ret = priv->cfg->ops->lib->apm_ops.set_pwr_src(priv, IWL_PWR_SRC_VMAIN);
231 priv->cfg->ops->lib->apm_ops.config(priv);
233 /* Allocate the RX queue, or reset if it is already allocated */
235 ret = iwl_rx_queue_alloc(priv);
237 IWL_ERR(priv, "Unable to initialize Rx queue\n");
241 iwl_rx_queue_reset(priv, rxq);
243 iwl_rx_replenish(priv);
245 iwl_rx_init(priv, rxq);
247 spin_lock_irqsave(&priv->lock, flags);
249 rxq->need_update = 1;
250 iwl_rx_queue_update_write_ptr(priv, rxq);
252 spin_unlock_irqrestore(&priv->lock, flags);
254 /* Allocate and init all Tx and Command queues */
255 ret = iwl_txq_ctx_reset(priv);
259 set_bit(STATUS_INIT, &priv->status);
263 EXPORT_SYMBOL(iwl_hw_nic_init);
268 void iwl_activate_qos(struct iwl_priv *priv, u8 force)
270 if (test_bit(STATUS_EXIT_PENDING, &priv->status))
273 priv->qos_data.def_qos_parm.qos_flags = 0;
275 if (priv->qos_data.qos_cap.q_AP.queue_request &&
276 !priv->qos_data.qos_cap.q_AP.txop_request)
277 priv->qos_data.def_qos_parm.qos_flags |=
278 QOS_PARAM_FLG_TXOP_TYPE_MSK;
279 if (priv->qos_data.qos_active)
280 priv->qos_data.def_qos_parm.qos_flags |=
281 QOS_PARAM_FLG_UPDATE_EDCA_MSK;
283 if (priv->current_ht_config.is_ht)
284 priv->qos_data.def_qos_parm.qos_flags |= QOS_PARAM_FLG_TGN_MSK;
286 if (force || iwl_is_associated(priv)) {
287 IWL_DEBUG_QOS(priv, "send QoS cmd with Qos active=%d FLAGS=0x%X\n",
288 priv->qos_data.qos_active,
289 priv->qos_data.def_qos_parm.qos_flags);
291 iwl_send_cmd_pdu_async(priv, REPLY_QOS_PARAM,
292 sizeof(struct iwl_qosparam_cmd),
293 &priv->qos_data.def_qos_parm, NULL);
296 EXPORT_SYMBOL(iwl_activate_qos);
299 * AC CWmin CW max AIFSN TXOP Limit TXOP Limit
300 * (802.11b) (802.11a/g)
301 * AC_BK 15 1023 7 0 0
302 * AC_BE 15 1023 3 0 0
303 * AC_VI 7 15 2 6.016ms 3.008ms
304 * AC_VO 3 7 2 3.264ms 1.504ms
306 void iwl_reset_qos(struct iwl_priv *priv)
311 bool is_legacy = false;
315 spin_lock_irqsave(&priv->lock, flags);
316 /* QoS always active in AP and ADHOC mode
317 * In STA mode wait for association
319 if (priv->iw_mode == NL80211_IFTYPE_ADHOC ||
320 priv->iw_mode == NL80211_IFTYPE_AP)
321 priv->qos_data.qos_active = 1;
323 priv->qos_data.qos_active = 0;
325 /* check for legacy mode */
326 if ((priv->iw_mode == NL80211_IFTYPE_ADHOC &&
327 (priv->active_rate & IWL_OFDM_RATES_MASK) == 0) ||
328 (priv->iw_mode == NL80211_IFTYPE_STATION &&
329 (priv->staging_rxon.flags & RXON_FLG_SHORT_SLOT_MSK) == 0)) {
334 if (priv->qos_data.qos_active)
338 priv->qos_data.def_qos_parm.ac[0].cw_min = cpu_to_le16(cw_min);
339 priv->qos_data.def_qos_parm.ac[0].cw_max = cpu_to_le16(cw_max);
340 priv->qos_data.def_qos_parm.ac[0].aifsn = aifs;
341 priv->qos_data.def_qos_parm.ac[0].edca_txop = 0;
342 priv->qos_data.def_qos_parm.ac[0].reserved1 = 0;
344 if (priv->qos_data.qos_active) {
347 priv->qos_data.def_qos_parm.ac[i].cw_min = cpu_to_le16(cw_min);
348 priv->qos_data.def_qos_parm.ac[i].cw_max = cpu_to_le16(cw_max);
349 priv->qos_data.def_qos_parm.ac[i].aifsn = 7;
350 priv->qos_data.def_qos_parm.ac[i].edca_txop = 0;
351 priv->qos_data.def_qos_parm.ac[i].reserved1 = 0;
355 priv->qos_data.def_qos_parm.ac[i].cw_min =
356 cpu_to_le16((cw_min + 1) / 2 - 1);
357 priv->qos_data.def_qos_parm.ac[i].cw_max =
359 priv->qos_data.def_qos_parm.ac[i].aifsn = 2;
361 priv->qos_data.def_qos_parm.ac[i].edca_txop =
364 priv->qos_data.def_qos_parm.ac[i].edca_txop =
366 priv->qos_data.def_qos_parm.ac[i].reserved1 = 0;
370 priv->qos_data.def_qos_parm.ac[i].cw_min =
371 cpu_to_le16((cw_min + 1) / 4 - 1);
372 priv->qos_data.def_qos_parm.ac[i].cw_max =
373 cpu_to_le16((cw_min + 1) / 2 - 1);
374 priv->qos_data.def_qos_parm.ac[i].aifsn = 2;
375 priv->qos_data.def_qos_parm.ac[i].reserved1 = 0;
377 priv->qos_data.def_qos_parm.ac[i].edca_txop =
380 priv->qos_data.def_qos_parm.ac[i].edca_txop =
383 for (i = 1; i < 4; i++) {
384 priv->qos_data.def_qos_parm.ac[i].cw_min =
386 priv->qos_data.def_qos_parm.ac[i].cw_max =
388 priv->qos_data.def_qos_parm.ac[i].aifsn = aifs;
389 priv->qos_data.def_qos_parm.ac[i].edca_txop = 0;
390 priv->qos_data.def_qos_parm.ac[i].reserved1 = 0;
393 IWL_DEBUG_QOS(priv, "set QoS to default \n");
395 spin_unlock_irqrestore(&priv->lock, flags);
397 EXPORT_SYMBOL(iwl_reset_qos);
399 #define MAX_BIT_RATE_40_MHZ 150 /* Mbps */
400 #define MAX_BIT_RATE_20_MHZ 72 /* Mbps */
401 static void iwlcore_init_ht_hw_capab(const struct iwl_priv *priv,
402 struct ieee80211_sta_ht_cap *ht_info,
403 enum ieee80211_band band)
405 u16 max_bit_rate = 0;
406 u8 rx_chains_num = priv->hw_params.rx_chains_num;
407 u8 tx_chains_num = priv->hw_params.tx_chains_num;
410 memset(&ht_info->mcs, 0, sizeof(ht_info->mcs));
412 ht_info->ht_supported = true;
414 if (priv->cfg->ht_greenfield_support)
415 ht_info->cap |= IEEE80211_HT_CAP_GRN_FLD;
416 ht_info->cap |= IEEE80211_HT_CAP_SGI_20;
417 ht_info->cap |= (IEEE80211_HT_CAP_SM_PS &
418 (WLAN_HT_CAP_SM_PS_DISABLED << 2));
420 max_bit_rate = MAX_BIT_RATE_20_MHZ;
421 if (priv->hw_params.ht40_channel & BIT(band)) {
422 ht_info->cap |= IEEE80211_HT_CAP_SUP_WIDTH_20_40;
423 ht_info->cap |= IEEE80211_HT_CAP_SGI_40;
424 ht_info->mcs.rx_mask[4] = 0x01;
425 max_bit_rate = MAX_BIT_RATE_40_MHZ;
428 if (priv->cfg->mod_params->amsdu_size_8K)
429 ht_info->cap |= IEEE80211_HT_CAP_MAX_AMSDU;
431 ht_info->ampdu_factor = CFG_HT_RX_AMPDU_FACTOR_DEF;
432 ht_info->ampdu_density = CFG_HT_MPDU_DENSITY_DEF;
434 ht_info->mcs.rx_mask[0] = 0xFF;
435 if (rx_chains_num >= 2)
436 ht_info->mcs.rx_mask[1] = 0xFF;
437 if (rx_chains_num >= 3)
438 ht_info->mcs.rx_mask[2] = 0xFF;
440 /* Highest supported Rx data rate */
441 max_bit_rate *= rx_chains_num;
442 WARN_ON(max_bit_rate & ~IEEE80211_HT_MCS_RX_HIGHEST_MASK);
443 ht_info->mcs.rx_highest = cpu_to_le16(max_bit_rate);
445 /* Tx MCS capabilities */
446 ht_info->mcs.tx_params = IEEE80211_HT_MCS_TX_DEFINED;
447 if (tx_chains_num != rx_chains_num) {
448 ht_info->mcs.tx_params |= IEEE80211_HT_MCS_TX_RX_DIFF;
449 ht_info->mcs.tx_params |= ((tx_chains_num - 1) <<
450 IEEE80211_HT_MCS_TX_MAX_STREAMS_SHIFT);
454 static void iwlcore_init_hw_rates(struct iwl_priv *priv,
455 struct ieee80211_rate *rates)
459 for (i = 0; i < IWL_RATE_COUNT_LEGACY; i++) {
460 rates[i].bitrate = iwl_rates[i].ieee * 5;
461 rates[i].hw_value = i; /* Rate scaling will work on indexes */
462 rates[i].hw_value_short = i;
464 if ((i >= IWL_FIRST_CCK_RATE) && (i <= IWL_LAST_CCK_RATE)) {
466 * If CCK != 1M then set short preamble rate flag.
469 (iwl_rates[i].plcp == IWL_RATE_1M_PLCP) ?
470 0 : IEEE80211_RATE_SHORT_PREAMBLE;
477 * iwlcore_init_geos - Initialize mac80211's geo/channel info based from eeprom
479 int iwlcore_init_geos(struct iwl_priv *priv)
481 struct iwl_channel_info *ch;
482 struct ieee80211_supported_band *sband;
483 struct ieee80211_channel *channels;
484 struct ieee80211_channel *geo_ch;
485 struct ieee80211_rate *rates;
488 if (priv->bands[IEEE80211_BAND_2GHZ].n_bitrates ||
489 priv->bands[IEEE80211_BAND_5GHZ].n_bitrates) {
490 IWL_DEBUG_INFO(priv, "Geography modes already initialized.\n");
491 set_bit(STATUS_GEO_CONFIGURED, &priv->status);
495 channels = kzalloc(sizeof(struct ieee80211_channel) *
496 priv->channel_count, GFP_KERNEL);
500 rates = kzalloc((sizeof(struct ieee80211_rate) * IWL_RATE_COUNT_LEGACY),
507 /* 5.2GHz channels start after the 2.4GHz channels */
508 sband = &priv->bands[IEEE80211_BAND_5GHZ];
509 sband->channels = &channels[ARRAY_SIZE(iwl_eeprom_band_1)];
511 sband->bitrates = &rates[IWL_FIRST_OFDM_RATE];
512 sband->n_bitrates = IWL_RATE_COUNT_LEGACY - IWL_FIRST_OFDM_RATE;
514 if (priv->cfg->sku & IWL_SKU_N)
515 iwlcore_init_ht_hw_capab(priv, &sband->ht_cap,
516 IEEE80211_BAND_5GHZ);
518 sband = &priv->bands[IEEE80211_BAND_2GHZ];
519 sband->channels = channels;
521 sband->bitrates = rates;
522 sband->n_bitrates = IWL_RATE_COUNT_LEGACY;
524 if (priv->cfg->sku & IWL_SKU_N)
525 iwlcore_init_ht_hw_capab(priv, &sband->ht_cap,
526 IEEE80211_BAND_2GHZ);
528 priv->ieee_channels = channels;
529 priv->ieee_rates = rates;
531 for (i = 0; i < priv->channel_count; i++) {
532 ch = &priv->channel_info[i];
534 /* FIXME: might be removed if scan is OK */
535 if (!is_channel_valid(ch))
538 if (is_channel_a_band(ch))
539 sband = &priv->bands[IEEE80211_BAND_5GHZ];
541 sband = &priv->bands[IEEE80211_BAND_2GHZ];
543 geo_ch = &sband->channels[sband->n_channels++];
545 geo_ch->center_freq =
546 ieee80211_channel_to_frequency(ch->channel);
547 geo_ch->max_power = ch->max_power_avg;
548 geo_ch->max_antenna_gain = 0xff;
549 geo_ch->hw_value = ch->channel;
551 if (is_channel_valid(ch)) {
552 if (!(ch->flags & EEPROM_CHANNEL_IBSS))
553 geo_ch->flags |= IEEE80211_CHAN_NO_IBSS;
555 if (!(ch->flags & EEPROM_CHANNEL_ACTIVE))
556 geo_ch->flags |= IEEE80211_CHAN_PASSIVE_SCAN;
558 if (ch->flags & EEPROM_CHANNEL_RADAR)
559 geo_ch->flags |= IEEE80211_CHAN_RADAR;
561 geo_ch->flags |= ch->ht40_extension_channel;
563 if (ch->max_power_avg > priv->tx_power_device_lmt)
564 priv->tx_power_device_lmt = ch->max_power_avg;
566 geo_ch->flags |= IEEE80211_CHAN_DISABLED;
569 IWL_DEBUG_INFO(priv, "Channel %d Freq=%d[%sGHz] %s flag=0x%X\n",
570 ch->channel, geo_ch->center_freq,
571 is_channel_a_band(ch) ? "5.2" : "2.4",
572 geo_ch->flags & IEEE80211_CHAN_DISABLED ?
573 "restricted" : "valid",
577 if ((priv->bands[IEEE80211_BAND_5GHZ].n_channels == 0) &&
578 priv->cfg->sku & IWL_SKU_A) {
579 IWL_INFO(priv, "Incorrectly detected BG card as ABG. "
580 "Please send your PCI ID 0x%04X:0x%04X to maintainer.\n",
581 priv->pci_dev->device,
582 priv->pci_dev->subsystem_device);
583 priv->cfg->sku &= ~IWL_SKU_A;
586 IWL_INFO(priv, "Tunable channels: %d 802.11bg, %d 802.11a channels\n",
587 priv->bands[IEEE80211_BAND_2GHZ].n_channels,
588 priv->bands[IEEE80211_BAND_5GHZ].n_channels);
590 set_bit(STATUS_GEO_CONFIGURED, &priv->status);
594 EXPORT_SYMBOL(iwlcore_init_geos);
597 * iwlcore_free_geos - undo allocations in iwlcore_init_geos
599 void iwlcore_free_geos(struct iwl_priv *priv)
601 kfree(priv->ieee_channels);
602 kfree(priv->ieee_rates);
603 clear_bit(STATUS_GEO_CONFIGURED, &priv->status);
605 EXPORT_SYMBOL(iwlcore_free_geos);
607 static bool is_single_rx_stream(struct iwl_priv *priv)
609 return !priv->current_ht_config.is_ht ||
610 priv->current_ht_config.single_chain_sufficient;
613 static u8 iwl_is_channel_extension(struct iwl_priv *priv,
614 enum ieee80211_band band,
615 u16 channel, u8 extension_chan_offset)
617 const struct iwl_channel_info *ch_info;
619 ch_info = iwl_get_channel_info(priv, band, channel);
620 if (!is_channel_valid(ch_info))
623 if (extension_chan_offset == IEEE80211_HT_PARAM_CHA_SEC_ABOVE)
624 return !(ch_info->ht40_extension_channel &
625 IEEE80211_CHAN_NO_HT40PLUS);
626 else if (extension_chan_offset == IEEE80211_HT_PARAM_CHA_SEC_BELOW)
627 return !(ch_info->ht40_extension_channel &
628 IEEE80211_CHAN_NO_HT40MINUS);
633 u8 iwl_is_ht40_tx_allowed(struct iwl_priv *priv,
634 struct ieee80211_sta_ht_cap *sta_ht_inf)
636 struct iwl_ht_config *ht_conf = &priv->current_ht_config;
638 if (!ht_conf->is_ht || !ht_conf->is_40mhz)
641 /* We do not check for IEEE80211_HT_CAP_SUP_WIDTH_20_40
642 * the bit will not set if it is pure 40MHz case
645 if (!sta_ht_inf->ht_supported)
648 #ifdef CONFIG_IWLWIFI_DEBUG
649 if (priv->disable_ht40)
652 return iwl_is_channel_extension(priv, priv->band,
653 le16_to_cpu(priv->staging_rxon.channel),
654 ht_conf->extension_chan_offset);
656 EXPORT_SYMBOL(iwl_is_ht40_tx_allowed);
658 static u16 iwl_adjust_beacon_interval(u16 beacon_val, u16 max_beacon_val)
661 u16 beacon_factor = 0;
663 beacon_factor = (beacon_val + max_beacon_val) / max_beacon_val;
664 new_val = beacon_val / beacon_factor;
667 new_val = max_beacon_val;
672 void iwl_setup_rxon_timing(struct iwl_priv *priv)
675 s32 interval_tm, rem;
677 struct ieee80211_conf *conf = NULL;
680 conf = ieee80211_get_hw_conf(priv->hw);
682 spin_lock_irqsave(&priv->lock, flags);
683 priv->rxon_timing.timestamp = cpu_to_le64(priv->timestamp);
684 priv->rxon_timing.listen_interval = cpu_to_le16(conf->listen_interval);
686 if (priv->iw_mode == NL80211_IFTYPE_STATION) {
687 beacon_int = priv->beacon_int;
688 priv->rxon_timing.atim_window = 0;
690 beacon_int = priv->vif->bss_conf.beacon_int;
692 /* TODO: we need to get atim_window from upper stack
693 * for now we set to 0 */
694 priv->rxon_timing.atim_window = 0;
697 beacon_int = iwl_adjust_beacon_interval(beacon_int,
698 priv->hw_params.max_beacon_itrvl * 1024);
699 priv->rxon_timing.beacon_interval = cpu_to_le16(beacon_int);
701 tsf = priv->timestamp; /* tsf is modifed by do_div: copy it */
702 interval_tm = beacon_int * 1024;
703 rem = do_div(tsf, interval_tm);
704 priv->rxon_timing.beacon_init_val = cpu_to_le32(interval_tm - rem);
706 spin_unlock_irqrestore(&priv->lock, flags);
707 IWL_DEBUG_ASSOC(priv,
708 "beacon interval %d beacon timer %d beacon tim %d\n",
709 le16_to_cpu(priv->rxon_timing.beacon_interval),
710 le32_to_cpu(priv->rxon_timing.beacon_init_val),
711 le16_to_cpu(priv->rxon_timing.atim_window));
713 EXPORT_SYMBOL(iwl_setup_rxon_timing);
715 void iwl_set_rxon_hwcrypto(struct iwl_priv *priv, int hw_decrypt)
717 struct iwl_rxon_cmd *rxon = &priv->staging_rxon;
720 rxon->filter_flags &= ~RXON_FILTER_DIS_DECRYPT_MSK;
722 rxon->filter_flags |= RXON_FILTER_DIS_DECRYPT_MSK;
725 EXPORT_SYMBOL(iwl_set_rxon_hwcrypto);
728 * iwl_check_rxon_cmd - validate RXON structure is valid
730 * NOTE: This is really only useful during development and can eventually
731 * be #ifdef'd out once the driver is stable and folks aren't actively
734 int iwl_check_rxon_cmd(struct iwl_priv *priv)
738 struct iwl_rxon_cmd *rxon = &priv->staging_rxon;
740 if (rxon->flags & RXON_FLG_BAND_24G_MSK) {
741 error |= le32_to_cpu(rxon->flags &
742 (RXON_FLG_TGJ_NARROW_BAND_MSK |
743 RXON_FLG_RADAR_DETECT_MSK));
745 IWL_WARN(priv, "check 24G fields %d | %d\n",
748 error |= (rxon->flags & RXON_FLG_SHORT_SLOT_MSK) ?
749 0 : le32_to_cpu(RXON_FLG_SHORT_SLOT_MSK);
751 IWL_WARN(priv, "check 52 fields %d | %d\n",
753 error |= le32_to_cpu(rxon->flags & RXON_FLG_CCK_MSK);
755 IWL_WARN(priv, "check 52 CCK %d | %d\n",
758 error |= (rxon->node_addr[0] | rxon->bssid_addr[0]) & 0x1;
760 IWL_WARN(priv, "check mac addr %d | %d\n", counter++, error);
762 /* make sure basic rates 6Mbps and 1Mbps are supported */
763 error |= (((rxon->ofdm_basic_rates & IWL_RATE_6M_MASK) == 0) &&
764 ((rxon->cck_basic_rates & IWL_RATE_1M_MASK) == 0));
766 IWL_WARN(priv, "check basic rate %d | %d\n", counter++, error);
768 error |= (le16_to_cpu(rxon->assoc_id) > 2007);
770 IWL_WARN(priv, "check assoc id %d | %d\n", counter++, error);
772 error |= ((rxon->flags & (RXON_FLG_CCK_MSK | RXON_FLG_SHORT_SLOT_MSK))
773 == (RXON_FLG_CCK_MSK | RXON_FLG_SHORT_SLOT_MSK));
775 IWL_WARN(priv, "check CCK and short slot %d | %d\n",
778 error |= ((rxon->flags & (RXON_FLG_CCK_MSK | RXON_FLG_AUTO_DETECT_MSK))
779 == (RXON_FLG_CCK_MSK | RXON_FLG_AUTO_DETECT_MSK));
781 IWL_WARN(priv, "check CCK & auto detect %d | %d\n",
784 error |= ((rxon->flags & (RXON_FLG_AUTO_DETECT_MSK |
785 RXON_FLG_TGG_PROTECT_MSK)) == RXON_FLG_TGG_PROTECT_MSK);
787 IWL_WARN(priv, "check TGG and auto detect %d | %d\n",
791 IWL_WARN(priv, "Tuning to channel %d\n",
792 le16_to_cpu(rxon->channel));
795 IWL_ERR(priv, "Not a valid iwl_rxon_assoc_cmd field values\n");
800 EXPORT_SYMBOL(iwl_check_rxon_cmd);
803 * iwl_full_rxon_required - check if full RXON (vs RXON_ASSOC) cmd is needed
804 * @priv: staging_rxon is compared to active_rxon
806 * If the RXON structure is changing enough to require a new tune,
807 * or is clearing the RXON_FILTER_ASSOC_MSK, then return 1 to indicate that
808 * a new tune (full RXON command, rather than RXON_ASSOC cmd) is required.
810 int iwl_full_rxon_required(struct iwl_priv *priv)
813 /* These items are only settable from the full RXON command */
814 if (!(iwl_is_associated(priv)) ||
815 compare_ether_addr(priv->staging_rxon.bssid_addr,
816 priv->active_rxon.bssid_addr) ||
817 compare_ether_addr(priv->staging_rxon.node_addr,
818 priv->active_rxon.node_addr) ||
819 compare_ether_addr(priv->staging_rxon.wlap_bssid_addr,
820 priv->active_rxon.wlap_bssid_addr) ||
821 (priv->staging_rxon.dev_type != priv->active_rxon.dev_type) ||
822 (priv->staging_rxon.channel != priv->active_rxon.channel) ||
823 (priv->staging_rxon.air_propagation !=
824 priv->active_rxon.air_propagation) ||
825 (priv->staging_rxon.ofdm_ht_single_stream_basic_rates !=
826 priv->active_rxon.ofdm_ht_single_stream_basic_rates) ||
827 (priv->staging_rxon.ofdm_ht_dual_stream_basic_rates !=
828 priv->active_rxon.ofdm_ht_dual_stream_basic_rates) ||
829 (priv->staging_rxon.ofdm_ht_triple_stream_basic_rates !=
830 priv->active_rxon.ofdm_ht_triple_stream_basic_rates) ||
831 (priv->staging_rxon.assoc_id != priv->active_rxon.assoc_id))
834 /* flags, filter_flags, ofdm_basic_rates, and cck_basic_rates can
835 * be updated with the RXON_ASSOC command -- however only some
836 * flag transitions are allowed using RXON_ASSOC */
838 /* Check if we are not switching bands */
839 if ((priv->staging_rxon.flags & RXON_FLG_BAND_24G_MSK) !=
840 (priv->active_rxon.flags & RXON_FLG_BAND_24G_MSK))
843 /* Check if we are switching association toggle */
844 if ((priv->staging_rxon.filter_flags & RXON_FILTER_ASSOC_MSK) !=
845 (priv->active_rxon.filter_flags & RXON_FILTER_ASSOC_MSK))
850 EXPORT_SYMBOL(iwl_full_rxon_required);
852 u8 iwl_rate_get_lowest_plcp(struct iwl_priv *priv)
858 if (priv->staging_rxon.flags & RXON_FLG_BAND_24G_MSK)
859 rate_mask = priv->active_rate_basic & IWL_CCK_RATES_MASK;
861 rate_mask = priv->active_rate_basic & IWL_OFDM_RATES_MASK;
863 /* Find lowest valid rate */
864 for (i = IWL_RATE_1M_INDEX; i != IWL_RATE_INVALID;
865 i = iwl_rates[i].next_ieee) {
866 if (rate_mask & (1 << i))
867 return iwl_rates[i].plcp;
870 /* No valid rate was found. Assign the lowest one */
871 if (priv->staging_rxon.flags & RXON_FLG_BAND_24G_MSK)
872 return IWL_RATE_1M_PLCP;
874 return IWL_RATE_6M_PLCP;
876 EXPORT_SYMBOL(iwl_rate_get_lowest_plcp);
878 void iwl_set_rxon_ht(struct iwl_priv *priv, struct iwl_ht_config *ht_conf)
880 struct iwl_rxon_cmd *rxon = &priv->staging_rxon;
882 if (!ht_conf->is_ht) {
883 rxon->flags &= ~(RXON_FLG_CHANNEL_MODE_MSK |
884 RXON_FLG_CTRL_CHANNEL_LOC_HI_MSK |
885 RXON_FLG_HT40_PROT_MSK |
886 RXON_FLG_HT_PROT_MSK);
890 /* FIXME: if the definition of ht_protection changed, the "translation"
891 * will be needed for rxon->flags
893 rxon->flags |= cpu_to_le32(ht_conf->ht_protection << RXON_FLG_HT_OPERATING_MODE_POS);
895 /* Set up channel bandwidth:
896 * 20 MHz only, 20/40 mixed or pure 40 if ht40 ok */
897 /* clear the HT channel mode before set the mode */
898 rxon->flags &= ~(RXON_FLG_CHANNEL_MODE_MSK |
899 RXON_FLG_CTRL_CHANNEL_LOC_HI_MSK);
900 if (iwl_is_ht40_tx_allowed(priv, NULL)) {
902 if (ht_conf->ht_protection == IEEE80211_HT_OP_MODE_PROTECTION_20MHZ) {
903 rxon->flags |= RXON_FLG_CHANNEL_MODE_PURE_40;
904 /* Note: control channel is opposite of extension channel */
905 switch (ht_conf->extension_chan_offset) {
906 case IEEE80211_HT_PARAM_CHA_SEC_ABOVE:
907 rxon->flags &= ~RXON_FLG_CTRL_CHANNEL_LOC_HI_MSK;
909 case IEEE80211_HT_PARAM_CHA_SEC_BELOW:
910 rxon->flags |= RXON_FLG_CTRL_CHANNEL_LOC_HI_MSK;
914 /* Note: control channel is opposite of extension channel */
915 switch (ht_conf->extension_chan_offset) {
916 case IEEE80211_HT_PARAM_CHA_SEC_ABOVE:
917 rxon->flags &= ~(RXON_FLG_CTRL_CHANNEL_LOC_HI_MSK);
918 rxon->flags |= RXON_FLG_CHANNEL_MODE_MIXED;
920 case IEEE80211_HT_PARAM_CHA_SEC_BELOW:
921 rxon->flags |= RXON_FLG_CTRL_CHANNEL_LOC_HI_MSK;
922 rxon->flags |= RXON_FLG_CHANNEL_MODE_MIXED;
924 case IEEE80211_HT_PARAM_CHA_SEC_NONE:
926 /* channel location only valid if in Mixed mode */
927 IWL_ERR(priv, "invalid extension channel offset\n");
932 rxon->flags |= RXON_FLG_CHANNEL_MODE_LEGACY;
935 if (priv->cfg->ops->hcmd->set_rxon_chain)
936 priv->cfg->ops->hcmd->set_rxon_chain(priv);
938 IWL_DEBUG_ASSOC(priv, "rxon flags 0x%X operation mode :0x%X "
939 "extension channel offset 0x%x\n",
940 le32_to_cpu(rxon->flags), ht_conf->ht_protection,
941 ht_conf->extension_chan_offset);
944 EXPORT_SYMBOL(iwl_set_rxon_ht);
946 #define IWL_NUM_RX_CHAINS_MULTIPLE 3
947 #define IWL_NUM_RX_CHAINS_SINGLE 2
948 #define IWL_NUM_IDLE_CHAINS_DUAL 2
949 #define IWL_NUM_IDLE_CHAINS_SINGLE 1
952 * Determine how many receiver/antenna chains to use.
954 * More provides better reception via diversity. Fewer saves power
955 * at the expense of throughput, but only when not in powersave to
958 * MIMO (dual stream) requires at least 2, but works better with 3.
959 * This does not determine *which* chains to use, just how many.
961 static int iwl_get_active_rx_chain_count(struct iwl_priv *priv)
963 /* # of Rx chains to use when expecting MIMO. */
964 if (is_single_rx_stream(priv))
965 return IWL_NUM_RX_CHAINS_SINGLE;
967 return IWL_NUM_RX_CHAINS_MULTIPLE;
971 * When we are in power saving, there's no difference between
972 * using multiple chains or just a single chain, but due to the
973 * lack of SM PS we lose a lot of throughput if we use just a
976 * Therefore, use the active count here (which will use multiple
977 * chains unless connected to a legacy AP).
979 static int iwl_get_idle_rx_chain_count(struct iwl_priv *priv, int active_cnt)
985 static u8 iwl_count_chain_bitmap(u32 chain_bitmap)
988 res = (chain_bitmap & BIT(0)) >> 0;
989 res += (chain_bitmap & BIT(1)) >> 1;
990 res += (chain_bitmap & BIT(2)) >> 2;
991 res += (chain_bitmap & BIT(3)) >> 3;
996 * iwl_is_monitor_mode - Determine if interface in monitor mode
998 * priv->iw_mode is set in add_interface, but add_interface is
999 * never called for monitor mode. The only way mac80211 informs us about
1000 * monitor mode is through configuring filters (call to configure_filter).
1002 bool iwl_is_monitor_mode(struct iwl_priv *priv)
1004 return !!(priv->staging_rxon.filter_flags & RXON_FILTER_PROMISC_MSK);
1006 EXPORT_SYMBOL(iwl_is_monitor_mode);
1009 * iwl_set_rxon_chain - Set up Rx chain usage in "staging" RXON image
1011 * Selects how many and which Rx receivers/antennas/chains to use.
1012 * This should not be used for scan command ... it puts data in wrong place.
1014 void iwl_set_rxon_chain(struct iwl_priv *priv)
1016 bool is_single = is_single_rx_stream(priv);
1017 bool is_cam = !test_bit(STATUS_POWER_PMI, &priv->status);
1018 u8 idle_rx_cnt, active_rx_cnt, valid_rx_cnt;
1022 /* Tell uCode which antennas are actually connected.
1023 * Before first association, we assume all antennas are connected.
1024 * Just after first association, iwl_chain_noise_calibration()
1025 * checks which antennas actually *are* connected. */
1026 if (priv->chain_noise_data.active_chains)
1027 active_chains = priv->chain_noise_data.active_chains;
1029 active_chains = priv->hw_params.valid_rx_ant;
1031 rx_chain = active_chains << RXON_RX_CHAIN_VALID_POS;
1033 /* How many receivers should we use? */
1034 active_rx_cnt = iwl_get_active_rx_chain_count(priv);
1035 idle_rx_cnt = iwl_get_idle_rx_chain_count(priv, active_rx_cnt);
1038 /* correct rx chain count according hw settings
1039 * and chain noise calibration
1041 valid_rx_cnt = iwl_count_chain_bitmap(active_chains);
1042 if (valid_rx_cnt < active_rx_cnt)
1043 active_rx_cnt = valid_rx_cnt;
1045 if (valid_rx_cnt < idle_rx_cnt)
1046 idle_rx_cnt = valid_rx_cnt;
1048 rx_chain |= active_rx_cnt << RXON_RX_CHAIN_MIMO_CNT_POS;
1049 rx_chain |= idle_rx_cnt << RXON_RX_CHAIN_CNT_POS;
1051 /* copied from 'iwl_bg_request_scan()' */
1052 /* Force use of chains B and C (0x6) for Rx for 4965
1053 * Avoid A (0x1) because of its off-channel reception on A-band.
1054 * MIMO is not used here, but value is required */
1055 if (iwl_is_monitor_mode(priv) &&
1056 !(priv->staging_rxon.flags & RXON_FLG_BAND_24G_MSK) &&
1057 ((priv->hw_rev & CSR_HW_REV_TYPE_MSK) == CSR_HW_REV_TYPE_4965)) {
1058 rx_chain = ANT_ABC << RXON_RX_CHAIN_VALID_POS;
1059 rx_chain |= ANT_BC << RXON_RX_CHAIN_FORCE_SEL_POS;
1060 rx_chain |= ANT_ABC << RXON_RX_CHAIN_FORCE_MIMO_SEL_POS;
1061 rx_chain |= 0x1 << RXON_RX_CHAIN_DRIVER_FORCE_POS;
1064 priv->staging_rxon.rx_chain = cpu_to_le16(rx_chain);
1066 if (!is_single && (active_rx_cnt >= IWL_NUM_RX_CHAINS_SINGLE) && is_cam)
1067 priv->staging_rxon.rx_chain |= RXON_RX_CHAIN_MIMO_FORCE_MSK;
1069 priv->staging_rxon.rx_chain &= ~RXON_RX_CHAIN_MIMO_FORCE_MSK;
1071 IWL_DEBUG_ASSOC(priv, "rx_chain=0x%X active=%d idle=%d\n",
1072 priv->staging_rxon.rx_chain,
1073 active_rx_cnt, idle_rx_cnt);
1075 WARN_ON(active_rx_cnt == 0 || idle_rx_cnt == 0 ||
1076 active_rx_cnt < idle_rx_cnt);
1078 EXPORT_SYMBOL(iwl_set_rxon_chain);
1081 * iwl_set_rxon_channel - Set the phymode and channel values in staging RXON
1082 * @phymode: MODE_IEEE80211A sets to 5.2GHz; all else set to 2.4GHz
1083 * @channel: Any channel valid for the requested phymode
1085 * In addition to setting the staging RXON, priv->phymode is also set.
1087 * NOTE: Does not commit to the hardware; it sets appropriate bit fields
1088 * in the staging RXON flag structure based on the phymode
1090 int iwl_set_rxon_channel(struct iwl_priv *priv, struct ieee80211_channel *ch)
1092 enum ieee80211_band band = ch->band;
1093 u16 channel = ieee80211_frequency_to_channel(ch->center_freq);
1095 if (!iwl_get_channel_info(priv, band, channel)) {
1096 IWL_DEBUG_INFO(priv, "Could not set channel to %d [%d]\n",
1101 if ((le16_to_cpu(priv->staging_rxon.channel) == channel) &&
1102 (priv->band == band))
1105 priv->staging_rxon.channel = cpu_to_le16(channel);
1106 if (band == IEEE80211_BAND_5GHZ)
1107 priv->staging_rxon.flags &= ~RXON_FLG_BAND_24G_MSK;
1109 priv->staging_rxon.flags |= RXON_FLG_BAND_24G_MSK;
1113 IWL_DEBUG_INFO(priv, "Staging channel set to %d [%d]\n", channel, band);
1117 EXPORT_SYMBOL(iwl_set_rxon_channel);
1119 void iwl_set_flags_for_band(struct iwl_priv *priv,
1120 enum ieee80211_band band)
1122 if (band == IEEE80211_BAND_5GHZ) {
1123 priv->staging_rxon.flags &=
1124 ~(RXON_FLG_BAND_24G_MSK | RXON_FLG_AUTO_DETECT_MSK
1125 | RXON_FLG_CCK_MSK);
1126 priv->staging_rxon.flags |= RXON_FLG_SHORT_SLOT_MSK;
1128 /* Copied from iwl_post_associate() */
1129 if (priv->assoc_capability & WLAN_CAPABILITY_SHORT_SLOT_TIME)
1130 priv->staging_rxon.flags |= RXON_FLG_SHORT_SLOT_MSK;
1132 priv->staging_rxon.flags &= ~RXON_FLG_SHORT_SLOT_MSK;
1134 if (priv->iw_mode == NL80211_IFTYPE_ADHOC)
1135 priv->staging_rxon.flags &= ~RXON_FLG_SHORT_SLOT_MSK;
1137 priv->staging_rxon.flags |= RXON_FLG_BAND_24G_MSK;
1138 priv->staging_rxon.flags |= RXON_FLG_AUTO_DETECT_MSK;
1139 priv->staging_rxon.flags &= ~RXON_FLG_CCK_MSK;
1144 * initialize rxon structure with default values from eeprom
1146 void iwl_connection_init_rx_config(struct iwl_priv *priv, int mode)
1148 const struct iwl_channel_info *ch_info;
1150 memset(&priv->staging_rxon, 0, sizeof(priv->staging_rxon));
1153 case NL80211_IFTYPE_AP:
1154 priv->staging_rxon.dev_type = RXON_DEV_TYPE_AP;
1157 case NL80211_IFTYPE_STATION:
1158 priv->staging_rxon.dev_type = RXON_DEV_TYPE_ESS;
1159 priv->staging_rxon.filter_flags = RXON_FILTER_ACCEPT_GRP_MSK;
1162 case NL80211_IFTYPE_ADHOC:
1163 priv->staging_rxon.dev_type = RXON_DEV_TYPE_IBSS;
1164 priv->staging_rxon.flags = RXON_FLG_SHORT_PREAMBLE_MSK;
1165 priv->staging_rxon.filter_flags = RXON_FILTER_BCON_AWARE_MSK |
1166 RXON_FILTER_ACCEPT_GRP_MSK;
1170 IWL_ERR(priv, "Unsupported interface type %d\n", mode);
1175 /* TODO: Figure out when short_preamble would be set and cache from
1177 if (!hw_to_local(priv->hw)->short_preamble)
1178 priv->staging_rxon.flags &= ~RXON_FLG_SHORT_PREAMBLE_MSK;
1180 priv->staging_rxon.flags |= RXON_FLG_SHORT_PREAMBLE_MSK;
1183 ch_info = iwl_get_channel_info(priv, priv->band,
1184 le16_to_cpu(priv->active_rxon.channel));
1187 ch_info = &priv->channel_info[0];
1190 * in some case A channels are all non IBSS
1191 * in this case force B/G channel
1193 if ((priv->iw_mode == NL80211_IFTYPE_ADHOC) &&
1194 !(is_channel_ibss(ch_info)))
1195 ch_info = &priv->channel_info[0];
1197 priv->staging_rxon.channel = cpu_to_le16(ch_info->channel);
1198 priv->band = ch_info->band;
1200 iwl_set_flags_for_band(priv, priv->band);
1202 priv->staging_rxon.ofdm_basic_rates =
1203 (IWL_OFDM_RATES_MASK >> IWL_FIRST_OFDM_RATE) & 0xFF;
1204 priv->staging_rxon.cck_basic_rates =
1205 (IWL_CCK_RATES_MASK >> IWL_FIRST_CCK_RATE) & 0xF;
1207 /* clear both MIX and PURE40 mode flag */
1208 priv->staging_rxon.flags &= ~(RXON_FLG_CHANNEL_MODE_MIXED |
1209 RXON_FLG_CHANNEL_MODE_PURE_40);
1210 memcpy(priv->staging_rxon.node_addr, priv->mac_addr, ETH_ALEN);
1211 memcpy(priv->staging_rxon.wlap_bssid_addr, priv->mac_addr, ETH_ALEN);
1212 priv->staging_rxon.ofdm_ht_single_stream_basic_rates = 0xff;
1213 priv->staging_rxon.ofdm_ht_dual_stream_basic_rates = 0xff;
1214 priv->staging_rxon.ofdm_ht_triple_stream_basic_rates = 0xff;
1216 EXPORT_SYMBOL(iwl_connection_init_rx_config);
1218 static void iwl_set_rate(struct iwl_priv *priv)
1220 const struct ieee80211_supported_band *hw = NULL;
1221 struct ieee80211_rate *rate;
1224 hw = iwl_get_hw_mode(priv, priv->band);
1226 IWL_ERR(priv, "Failed to set rate: unable to get hw mode\n");
1230 priv->active_rate = 0;
1231 priv->active_rate_basic = 0;
1233 for (i = 0; i < hw->n_bitrates; i++) {
1234 rate = &(hw->bitrates[i]);
1235 if (rate->hw_value < IWL_RATE_COUNT_LEGACY)
1236 priv->active_rate |= (1 << rate->hw_value);
1239 IWL_DEBUG_RATE(priv, "Set active_rate = %0x, active_rate_basic = %0x\n",
1240 priv->active_rate, priv->active_rate_basic);
1243 * If a basic rate is configured, then use it (adding IWL_RATE_1M_MASK)
1244 * otherwise set it to the default of all CCK rates and 6, 12, 24 for
1247 if (priv->active_rate_basic & IWL_CCK_BASIC_RATES_MASK)
1248 priv->staging_rxon.cck_basic_rates =
1249 ((priv->active_rate_basic &
1250 IWL_CCK_RATES_MASK) >> IWL_FIRST_CCK_RATE) & 0xF;
1252 priv->staging_rxon.cck_basic_rates =
1253 (IWL_CCK_BASIC_RATES_MASK >> IWL_FIRST_CCK_RATE) & 0xF;
1255 if (priv->active_rate_basic & IWL_OFDM_BASIC_RATES_MASK)
1256 priv->staging_rxon.ofdm_basic_rates =
1257 ((priv->active_rate_basic &
1258 (IWL_OFDM_BASIC_RATES_MASK | IWL_RATE_6M_MASK)) >>
1259 IWL_FIRST_OFDM_RATE) & 0xFF;
1261 priv->staging_rxon.ofdm_basic_rates =
1262 (IWL_OFDM_BASIC_RATES_MASK >> IWL_FIRST_OFDM_RATE) & 0xFF;
1265 void iwl_rx_csa(struct iwl_priv *priv, struct iwl_rx_mem_buffer *rxb)
1267 struct iwl_rx_packet *pkt = (struct iwl_rx_packet *)rxb->skb->data;
1268 struct iwl_rxon_cmd *rxon = (void *)&priv->active_rxon;
1269 struct iwl_csa_notification *csa = &(pkt->u.csa_notif);
1270 IWL_DEBUG_11H(priv, "CSA notif: channel %d, status %d\n",
1271 le16_to_cpu(csa->channel), le32_to_cpu(csa->status));
1272 rxon->channel = csa->channel;
1273 priv->staging_rxon.channel = csa->channel;
1275 EXPORT_SYMBOL(iwl_rx_csa);
1277 #ifdef CONFIG_IWLWIFI_DEBUG
1278 static void iwl_print_rx_config_cmd(struct iwl_priv *priv)
1280 struct iwl_rxon_cmd *rxon = &priv->staging_rxon;
1282 IWL_DEBUG_RADIO(priv, "RX CONFIG:\n");
1283 iwl_print_hex_dump(priv, IWL_DL_RADIO, (u8 *) rxon, sizeof(*rxon));
1284 IWL_DEBUG_RADIO(priv, "u16 channel: 0x%x\n", le16_to_cpu(rxon->channel));
1285 IWL_DEBUG_RADIO(priv, "u32 flags: 0x%08X\n", le32_to_cpu(rxon->flags));
1286 IWL_DEBUG_RADIO(priv, "u32 filter_flags: 0x%08x\n",
1287 le32_to_cpu(rxon->filter_flags));
1288 IWL_DEBUG_RADIO(priv, "u8 dev_type: 0x%x\n", rxon->dev_type);
1289 IWL_DEBUG_RADIO(priv, "u8 ofdm_basic_rates: 0x%02x\n",
1290 rxon->ofdm_basic_rates);
1291 IWL_DEBUG_RADIO(priv, "u8 cck_basic_rates: 0x%02x\n", rxon->cck_basic_rates);
1292 IWL_DEBUG_RADIO(priv, "u8[6] node_addr: %pM\n", rxon->node_addr);
1293 IWL_DEBUG_RADIO(priv, "u8[6] bssid_addr: %pM\n", rxon->bssid_addr);
1294 IWL_DEBUG_RADIO(priv, "u16 assoc_id: 0x%x\n", le16_to_cpu(rxon->assoc_id));
1298 * iwl_irq_handle_error - called for HW or SW error interrupt from card
1300 void iwl_irq_handle_error(struct iwl_priv *priv)
1302 /* Set the FW error flag -- cleared on iwl_down */
1303 set_bit(STATUS_FW_ERROR, &priv->status);
1305 /* Cancel currently queued command. */
1306 clear_bit(STATUS_HCMD_ACTIVE, &priv->status);
1308 #ifdef CONFIG_IWLWIFI_DEBUG
1309 if (iwl_get_debug_level(priv) & IWL_DL_FW_ERRORS) {
1310 priv->cfg->ops->lib->dump_nic_error_log(priv);
1311 priv->cfg->ops->lib->dump_nic_event_log(priv);
1312 iwl_print_rx_config_cmd(priv);
1316 wake_up_interruptible(&priv->wait_command_queue);
1318 /* Keep the restart process from trying to send host
1319 * commands by clearing the INIT status bit */
1320 clear_bit(STATUS_READY, &priv->status);
1322 if (!test_bit(STATUS_EXIT_PENDING, &priv->status)) {
1323 IWL_DEBUG(priv, IWL_DL_FW_ERRORS,
1324 "Restarting adapter due to uCode error.\n");
1326 if (priv->cfg->mod_params->restart_fw)
1327 queue_work(priv->workqueue, &priv->restart);
1330 EXPORT_SYMBOL(iwl_irq_handle_error);
1332 void iwl_configure_filter(struct ieee80211_hw *hw,
1333 unsigned int changed_flags,
1334 unsigned int *total_flags,
1337 struct iwl_priv *priv = hw->priv;
1338 __le32 *filter_flags = &priv->staging_rxon.filter_flags;
1340 IWL_DEBUG_MAC80211(priv, "Enter: changed: 0x%x, total: 0x%x\n",
1341 changed_flags, *total_flags);
1343 if (changed_flags & (FIF_OTHER_BSS | FIF_PROMISC_IN_BSS)) {
1344 if (*total_flags & (FIF_OTHER_BSS | FIF_PROMISC_IN_BSS))
1345 *filter_flags |= RXON_FILTER_PROMISC_MSK;
1347 *filter_flags &= ~RXON_FILTER_PROMISC_MSK;
1349 if (changed_flags & FIF_ALLMULTI) {
1350 if (*total_flags & FIF_ALLMULTI)
1351 *filter_flags |= RXON_FILTER_ACCEPT_GRP_MSK;
1353 *filter_flags &= ~RXON_FILTER_ACCEPT_GRP_MSK;
1355 if (changed_flags & FIF_CONTROL) {
1356 if (*total_flags & FIF_CONTROL)
1357 *filter_flags |= RXON_FILTER_CTL2HOST_MSK;
1359 *filter_flags &= ~RXON_FILTER_CTL2HOST_MSK;
1361 if (changed_flags & FIF_BCN_PRBRESP_PROMISC) {
1362 if (*total_flags & FIF_BCN_PRBRESP_PROMISC)
1363 *filter_flags |= RXON_FILTER_BCON_AWARE_MSK;
1365 *filter_flags &= ~RXON_FILTER_BCON_AWARE_MSK;
1368 /* We avoid iwl_commit_rxon here to commit the new filter flags
1369 * since mac80211 will call ieee80211_hw_config immediately.
1370 * (mc_list is not supported at this time). Otherwise, we need to
1371 * queue a background iwl_commit_rxon work.
1374 *total_flags &= FIF_OTHER_BSS | FIF_ALLMULTI | FIF_PROMISC_IN_BSS |
1375 FIF_BCN_PRBRESP_PROMISC | FIF_CONTROL;
1377 EXPORT_SYMBOL(iwl_configure_filter);
1379 int iwl_setup_mac(struct iwl_priv *priv)
1382 struct ieee80211_hw *hw = priv->hw;
1383 hw->rate_control_algorithm = "iwl-agn-rs";
1385 /* Tell mac80211 our characteristics */
1386 hw->flags = IEEE80211_HW_SIGNAL_DBM |
1387 IEEE80211_HW_NOISE_DBM |
1388 IEEE80211_HW_AMPDU_AGGREGATION |
1389 IEEE80211_HW_SPECTRUM_MGMT;
1391 if (!priv->cfg->broken_powersave)
1392 hw->flags |= IEEE80211_HW_SUPPORTS_PS |
1393 IEEE80211_HW_SUPPORTS_DYNAMIC_PS;
1395 hw->wiphy->interface_modes =
1396 BIT(NL80211_IFTYPE_STATION) |
1397 BIT(NL80211_IFTYPE_ADHOC);
1399 hw->wiphy->custom_regulatory = true;
1401 /* Firmware does not support this */
1402 hw->wiphy->disable_beacon_hints = true;
1405 * For now, disable PS by default because it affects
1406 * RX performance significantly.
1408 hw->wiphy->ps_default = false;
1410 hw->wiphy->max_scan_ssids = PROBE_OPTION_MAX;
1411 /* we create the 802.11 header and a zero-length SSID element */
1412 hw->wiphy->max_scan_ie_len = IWL_MAX_PROBE_REQUEST - 24 - 2;
1414 /* Default value; 4 EDCA QOS priorities */
1417 hw->max_listen_interval = IWL_CONN_MAX_LISTEN_INTERVAL;
1419 if (priv->bands[IEEE80211_BAND_2GHZ].n_channels)
1420 priv->hw->wiphy->bands[IEEE80211_BAND_2GHZ] =
1421 &priv->bands[IEEE80211_BAND_2GHZ];
1422 if (priv->bands[IEEE80211_BAND_5GHZ].n_channels)
1423 priv->hw->wiphy->bands[IEEE80211_BAND_5GHZ] =
1424 &priv->bands[IEEE80211_BAND_5GHZ];
1426 ret = ieee80211_register_hw(priv->hw);
1428 IWL_ERR(priv, "Failed to register hw (error %d)\n", ret);
1431 priv->mac80211_registered = 1;
1435 EXPORT_SYMBOL(iwl_setup_mac);
1437 int iwl_set_hw_params(struct iwl_priv *priv)
1439 priv->hw_params.max_rxq_size = RX_QUEUE_SIZE;
1440 priv->hw_params.max_rxq_log = RX_QUEUE_SIZE_LOG;
1441 if (priv->cfg->mod_params->amsdu_size_8K)
1442 priv->hw_params.rx_buf_size = IWL_RX_BUF_SIZE_8K;
1444 priv->hw_params.rx_buf_size = IWL_RX_BUF_SIZE_4K;
1445 priv->hw_params.max_pkt_size = priv->hw_params.rx_buf_size - 256;
1447 priv->hw_params.max_beacon_itrvl = IWL_MAX_UCODE_BEACON_INTERVAL;
1449 if (priv->cfg->mod_params->disable_11n)
1450 priv->cfg->sku &= ~IWL_SKU_N;
1452 /* Device-specific setup */
1453 return priv->cfg->ops->lib->set_hw_params(priv);
1455 EXPORT_SYMBOL(iwl_set_hw_params);
1457 int iwl_init_drv(struct iwl_priv *priv)
1461 priv->ibss_beacon = NULL;
1463 spin_lock_init(&priv->lock);
1464 spin_lock_init(&priv->sta_lock);
1465 spin_lock_init(&priv->hcmd_lock);
1467 INIT_LIST_HEAD(&priv->free_frames);
1469 mutex_init(&priv->mutex);
1471 /* Clear the driver's (not device's) station table */
1472 iwl_clear_stations_table(priv);
1474 priv->data_retry_limit = -1;
1475 priv->ieee_channels = NULL;
1476 priv->ieee_rates = NULL;
1477 priv->band = IEEE80211_BAND_2GHZ;
1479 priv->iw_mode = NL80211_IFTYPE_STATION;
1481 /* Choose which receivers/antennas to use */
1482 if (priv->cfg->ops->hcmd->set_rxon_chain)
1483 priv->cfg->ops->hcmd->set_rxon_chain(priv);
1485 iwl_init_scan_params(priv);
1487 iwl_reset_qos(priv);
1489 priv->qos_data.qos_active = 0;
1490 priv->qos_data.qos_cap.val = 0;
1492 priv->rates_mask = IWL_RATES_MASK;
1493 /* Set the tx_power_user_lmt to the lowest power level
1494 * this value will get overwritten by channel max power avg
1496 priv->tx_power_user_lmt = IWL_TX_POWER_TARGET_POWER_MIN;
1498 ret = iwl_init_channel_map(priv);
1500 IWL_ERR(priv, "initializing regulatory failed: %d\n", ret);
1504 ret = iwlcore_init_geos(priv);
1506 IWL_ERR(priv, "initializing geos failed: %d\n", ret);
1507 goto err_free_channel_map;
1509 iwlcore_init_hw_rates(priv, priv->ieee_rates);
1513 err_free_channel_map:
1514 iwl_free_channel_map(priv);
1518 EXPORT_SYMBOL(iwl_init_drv);
1520 int iwl_set_tx_power(struct iwl_priv *priv, s8 tx_power, bool force)
1523 s8 prev_tx_power = priv->tx_power_user_lmt;
1525 if (tx_power < IWL_TX_POWER_TARGET_POWER_MIN) {
1526 IWL_WARN(priv, "Requested user TXPOWER %d below lower limit %d.\n",
1528 IWL_TX_POWER_TARGET_POWER_MIN);
1532 if (tx_power > priv->tx_power_device_lmt) {
1534 "Requested user TXPOWER %d above upper limit %d.\n",
1535 tx_power, priv->tx_power_device_lmt);
1539 if (priv->tx_power_user_lmt != tx_power)
1542 /* if nic is not up don't send command */
1543 if (iwl_is_ready_rf(priv)) {
1544 priv->tx_power_user_lmt = tx_power;
1545 if (force && priv->cfg->ops->lib->send_tx_power)
1546 ret = priv->cfg->ops->lib->send_tx_power(priv);
1547 else if (!priv->cfg->ops->lib->send_tx_power)
1550 * if fail to set tx_power, restore the orig. tx power
1553 priv->tx_power_user_lmt = prev_tx_power;
1557 * Even this is an async host command, the command
1558 * will always report success from uCode
1559 * So once driver can placing the command into the queue
1560 * successfully, driver can use priv->tx_power_user_lmt
1561 * to reflect the current tx power
1565 EXPORT_SYMBOL(iwl_set_tx_power);
1567 void iwl_uninit_drv(struct iwl_priv *priv)
1569 iwl_calib_free_results(priv);
1570 iwlcore_free_geos(priv);
1571 iwl_free_channel_map(priv);
1574 EXPORT_SYMBOL(iwl_uninit_drv);
1576 #define ICT_COUNT (PAGE_SIZE/sizeof(u32))
1578 /* Free dram table */
1579 void iwl_free_isr_ict(struct iwl_priv *priv)
1581 if (priv->ict_tbl_vir) {
1582 pci_free_consistent(priv->pci_dev, (sizeof(u32) * ICT_COUNT) +
1583 PAGE_SIZE, priv->ict_tbl_vir,
1585 priv->ict_tbl_vir = NULL;
1588 EXPORT_SYMBOL(iwl_free_isr_ict);
1591 /* allocate dram shared table it is a PAGE_SIZE aligned
1592 * also reset all data related to ICT table interrupt.
1594 int iwl_alloc_isr_ict(struct iwl_priv *priv)
1597 if (priv->cfg->use_isr_legacy)
1599 /* allocate shrared data table */
1600 priv->ict_tbl_vir = pci_alloc_consistent(priv->pci_dev, (sizeof(u32) *
1601 ICT_COUNT) + PAGE_SIZE,
1602 &priv->ict_tbl_dma);
1603 if (!priv->ict_tbl_vir)
1606 /* align table to PAGE_SIZE boundry */
1607 priv->aligned_ict_tbl_dma = ALIGN(priv->ict_tbl_dma, PAGE_SIZE);
1609 IWL_DEBUG_ISR(priv, "ict dma addr %Lx dma aligned %Lx diff %d\n",
1610 (unsigned long long)priv->ict_tbl_dma,
1611 (unsigned long long)priv->aligned_ict_tbl_dma,
1612 (int)(priv->aligned_ict_tbl_dma - priv->ict_tbl_dma));
1614 priv->ict_tbl = priv->ict_tbl_vir +
1615 (priv->aligned_ict_tbl_dma - priv->ict_tbl_dma);
1617 IWL_DEBUG_ISR(priv, "ict vir addr %p vir aligned %p diff %d\n",
1618 priv->ict_tbl, priv->ict_tbl_vir,
1619 (int)(priv->aligned_ict_tbl_dma - priv->ict_tbl_dma));
1621 /* reset table and index to all 0 */
1622 memset(priv->ict_tbl_vir,0, (sizeof(u32) * ICT_COUNT) + PAGE_SIZE);
1623 priv->ict_index = 0;
1625 /* add periodic RX interrupt */
1626 priv->inta_mask |= CSR_INT_BIT_RX_PERIODIC;
1629 EXPORT_SYMBOL(iwl_alloc_isr_ict);
1631 /* Device is going up inform it about using ICT interrupt table,
1632 * also we need to tell the driver to start using ICT interrupt.
1634 int iwl_reset_ict(struct iwl_priv *priv)
1637 unsigned long flags;
1639 if (!priv->ict_tbl_vir)
1642 spin_lock_irqsave(&priv->lock, flags);
1643 iwl_disable_interrupts(priv);
1645 memset(&priv->ict_tbl[0], 0, sizeof(u32) * ICT_COUNT);
1647 val = priv->aligned_ict_tbl_dma >> PAGE_SHIFT;
1649 val |= CSR_DRAM_INT_TBL_ENABLE;
1650 val |= CSR_DRAM_INIT_TBL_WRAP_CHECK;
1652 IWL_DEBUG_ISR(priv, "CSR_DRAM_INT_TBL_REG =0x%X "
1653 "aligned dma address %Lx\n",
1654 val, (unsigned long long)priv->aligned_ict_tbl_dma);
1656 iwl_write32(priv, CSR_DRAM_INT_TBL_REG, val);
1657 priv->use_ict = true;
1658 priv->ict_index = 0;
1659 iwl_write32(priv, CSR_INT, priv->inta_mask);
1660 iwl_enable_interrupts(priv);
1661 spin_unlock_irqrestore(&priv->lock, flags);
1665 EXPORT_SYMBOL(iwl_reset_ict);
1667 /* Device is going down disable ict interrupt usage */
1668 void iwl_disable_ict(struct iwl_priv *priv)
1670 unsigned long flags;
1672 spin_lock_irqsave(&priv->lock, flags);
1673 priv->use_ict = false;
1674 spin_unlock_irqrestore(&priv->lock, flags);
1676 EXPORT_SYMBOL(iwl_disable_ict);
1678 /* interrupt handler using ict table, with this interrupt driver will
1679 * stop using INTA register to get device's interrupt, reading this register
1680 * is expensive, device will write interrupts in ICT dram table, increment
1681 * index then will fire interrupt to driver, driver will OR all ICT table
1682 * entries from current index up to table entry with 0 value. the result is
1683 * the interrupt we need to service, driver will set the entries back to 0 and
1686 irqreturn_t iwl_isr_ict(int irq, void *data)
1688 struct iwl_priv *priv = data;
1689 u32 inta, inta_mask;
1695 /* dram interrupt table not set yet,
1696 * use legacy interrupt.
1699 return iwl_isr(irq, data);
1701 spin_lock(&priv->lock);
1703 /* Disable (but don't clear!) interrupts here to avoid
1704 * back-to-back ISRs and sporadic interrupts from our NIC.
1705 * If we have something to service, the tasklet will re-enable ints.
1706 * If we *don't* have something, we'll re-enable before leaving here.
1708 inta_mask = iwl_read32(priv, CSR_INT_MASK); /* just for debug */
1709 iwl_write32(priv, CSR_INT_MASK, 0x00000000);
1712 /* Ignore interrupt if there's nothing in NIC to service.
1713 * This may be due to IRQ shared with another device,
1714 * or due to sporadic interrupts thrown from our NIC. */
1715 if (!priv->ict_tbl[priv->ict_index]) {
1716 IWL_DEBUG_ISR(priv, "Ignore interrupt, inta == 0\n");
1720 /* read all entries that not 0 start with ict_index */
1721 while (priv->ict_tbl[priv->ict_index]) {
1723 val |= le32_to_cpu(priv->ict_tbl[priv->ict_index]);
1724 IWL_DEBUG_ISR(priv, "ICT index %d value 0x%08X\n",
1726 le32_to_cpu(priv->ict_tbl[priv->ict_index]));
1727 priv->ict_tbl[priv->ict_index] = 0;
1728 priv->ict_index = iwl_queue_inc_wrap(priv->ict_index,
1733 /* We should not get this value, just ignore it. */
1734 if (val == 0xffffffff)
1737 inta = (0xff & val) | ((0xff00 & val) << 16);
1738 IWL_DEBUG_ISR(priv, "ISR inta 0x%08x, enabled 0x%08x ict 0x%08x\n",
1739 inta, inta_mask, val);
1741 inta &= priv->inta_mask;
1744 /* iwl_irq_tasklet() will service interrupts and re-enable them */
1746 tasklet_schedule(&priv->irq_tasklet);
1747 else if (test_bit(STATUS_INT_ENABLED, &priv->status) && !priv->inta) {
1748 /* Allow interrupt if was disabled by this handler and
1749 * no tasklet was schedules, We should not enable interrupt,
1750 * tasklet will enable it.
1752 iwl_enable_interrupts(priv);
1755 spin_unlock(&priv->lock);
1759 /* re-enable interrupts here since we don't have anything to service.
1760 * only Re-enable if disabled by irq.
1762 if (test_bit(STATUS_INT_ENABLED, &priv->status) && !priv->inta)
1763 iwl_enable_interrupts(priv);
1765 spin_unlock(&priv->lock);
1768 EXPORT_SYMBOL(iwl_isr_ict);
1771 static irqreturn_t iwl_isr(int irq, void *data)
1773 struct iwl_priv *priv = data;
1774 u32 inta, inta_mask;
1775 #ifdef CONFIG_IWLWIFI_DEBUG
1781 spin_lock(&priv->lock);
1783 /* Disable (but don't clear!) interrupts here to avoid
1784 * back-to-back ISRs and sporadic interrupts from our NIC.
1785 * If we have something to service, the tasklet will re-enable ints.
1786 * If we *don't* have something, we'll re-enable before leaving here. */
1787 inta_mask = iwl_read32(priv, CSR_INT_MASK); /* just for debug */
1788 iwl_write32(priv, CSR_INT_MASK, 0x00000000);
1790 /* Discover which interrupts are active/pending */
1791 inta = iwl_read32(priv, CSR_INT);
1793 /* Ignore interrupt if there's nothing in NIC to service.
1794 * This may be due to IRQ shared with another device,
1795 * or due to sporadic interrupts thrown from our NIC. */
1797 IWL_DEBUG_ISR(priv, "Ignore interrupt, inta == 0\n");
1801 if ((inta == 0xFFFFFFFF) || ((inta & 0xFFFFFFF0) == 0xa5a5a5a0)) {
1802 /* Hardware disappeared. It might have already raised
1804 IWL_WARN(priv, "HARDWARE GONE?? INTA == 0x%08x\n", inta);
1808 #ifdef CONFIG_IWLWIFI_DEBUG
1809 if (iwl_get_debug_level(priv) & (IWL_DL_ISR)) {
1810 inta_fh = iwl_read32(priv, CSR_FH_INT_STATUS);
1811 IWL_DEBUG_ISR(priv, "ISR inta 0x%08x, enabled 0x%08x, "
1812 "fh 0x%08x\n", inta, inta_mask, inta_fh);
1817 /* iwl_irq_tasklet() will service interrupts and re-enable them */
1819 tasklet_schedule(&priv->irq_tasklet);
1820 else if (test_bit(STATUS_INT_ENABLED, &priv->status) && !priv->inta)
1821 iwl_enable_interrupts(priv);
1824 spin_unlock(&priv->lock);
1828 /* re-enable interrupts here since we don't have anything to service. */
1829 /* only Re-enable if diabled by irq and no schedules tasklet. */
1830 if (test_bit(STATUS_INT_ENABLED, &priv->status) && !priv->inta)
1831 iwl_enable_interrupts(priv);
1833 spin_unlock(&priv->lock);
1837 irqreturn_t iwl_isr_legacy(int irq, void *data)
1839 struct iwl_priv *priv = data;
1840 u32 inta, inta_mask;
1845 spin_lock(&priv->lock);
1847 /* Disable (but don't clear!) interrupts here to avoid
1848 * back-to-back ISRs and sporadic interrupts from our NIC.
1849 * If we have something to service, the tasklet will re-enable ints.
1850 * If we *don't* have something, we'll re-enable before leaving here. */
1851 inta_mask = iwl_read32(priv, CSR_INT_MASK); /* just for debug */
1852 iwl_write32(priv, CSR_INT_MASK, 0x00000000);
1854 /* Discover which interrupts are active/pending */
1855 inta = iwl_read32(priv, CSR_INT);
1856 inta_fh = iwl_read32(priv, CSR_FH_INT_STATUS);
1858 /* Ignore interrupt if there's nothing in NIC to service.
1859 * This may be due to IRQ shared with another device,
1860 * or due to sporadic interrupts thrown from our NIC. */
1861 if (!inta && !inta_fh) {
1862 IWL_DEBUG_ISR(priv, "Ignore interrupt, inta == 0, inta_fh == 0\n");
1866 if ((inta == 0xFFFFFFFF) || ((inta & 0xFFFFFFF0) == 0xa5a5a5a0)) {
1867 /* Hardware disappeared. It might have already raised
1869 IWL_WARN(priv, "HARDWARE GONE?? INTA == 0x%08x\n", inta);
1873 IWL_DEBUG_ISR(priv, "ISR inta 0x%08x, enabled 0x%08x, fh 0x%08x\n",
1874 inta, inta_mask, inta_fh);
1876 inta &= ~CSR_INT_BIT_SCD;
1878 /* iwl_irq_tasklet() will service interrupts and re-enable them */
1879 if (likely(inta || inta_fh))
1880 tasklet_schedule(&priv->irq_tasklet);
1883 spin_unlock(&priv->lock);
1887 /* re-enable interrupts here since we don't have anything to service. */
1888 /* only Re-enable if diabled by irq */
1889 if (test_bit(STATUS_INT_ENABLED, &priv->status))
1890 iwl_enable_interrupts(priv);
1891 spin_unlock(&priv->lock);
1894 EXPORT_SYMBOL(iwl_isr_legacy);
1896 int iwl_send_bt_config(struct iwl_priv *priv)
1898 struct iwl_bt_cmd bt_cmd = {
1906 return iwl_send_cmd_pdu(priv, REPLY_BT_CONFIG,
1907 sizeof(struct iwl_bt_cmd), &bt_cmd);
1909 EXPORT_SYMBOL(iwl_send_bt_config);
1911 int iwl_send_statistics_request(struct iwl_priv *priv, u8 flags)
1914 struct iwl_host_cmd cmd = {
1915 .id = REPLY_STATISTICS_CMD,
1917 .len = sizeof(stat_flags),
1918 .data = (u8 *) &stat_flags,
1920 return iwl_send_cmd(priv, &cmd);
1922 EXPORT_SYMBOL(iwl_send_statistics_request);
1925 * iwl_verify_inst_sparse - verify runtime uCode image in card vs. host,
1926 * using sample data 100 bytes apart. If these sample points are good,
1927 * it's a pretty good bet that everything between them is good, too.
1929 static int iwlcore_verify_inst_sparse(struct iwl_priv *priv, __le32 *image, u32 len)
1936 IWL_DEBUG_INFO(priv, "ucode inst image size is %u\n", len);
1938 for (i = 0; i < len; i += 100, image += 100/sizeof(u32)) {
1939 /* read data comes through single port, auto-incr addr */
1940 /* NOTE: Use the debugless read so we don't flood kernel log
1941 * if IWL_DL_IO is set */
1942 iwl_write_direct32(priv, HBUS_TARG_MEM_RADDR,
1943 i + IWL49_RTC_INST_LOWER_BOUND);
1944 val = _iwl_read_direct32(priv, HBUS_TARG_MEM_RDAT);
1945 if (val != le32_to_cpu(*image)) {
1957 * iwlcore_verify_inst_full - verify runtime uCode image in card vs. host,
1958 * looking at all data.
1960 static int iwl_verify_inst_full(struct iwl_priv *priv, __le32 *image,
1968 IWL_DEBUG_INFO(priv, "ucode inst image size is %u\n", len);
1970 iwl_write_direct32(priv, HBUS_TARG_MEM_RADDR,
1971 IWL49_RTC_INST_LOWER_BOUND);
1974 for (; len > 0; len -= sizeof(u32), image++) {
1975 /* read data comes through single port, auto-incr addr */
1976 /* NOTE: Use the debugless read so we don't flood kernel log
1977 * if IWL_DL_IO is set */
1978 val = _iwl_read_direct32(priv, HBUS_TARG_MEM_RDAT);
1979 if (val != le32_to_cpu(*image)) {
1980 IWL_ERR(priv, "uCode INST section is invalid at "
1981 "offset 0x%x, is 0x%x, s/b 0x%x\n",
1982 save_len - len, val, le32_to_cpu(*image));
1991 IWL_DEBUG_INFO(priv,
1992 "ucode image in INSTRUCTION memory is good\n");
1998 * iwl_verify_ucode - determine which instruction image is in SRAM,
1999 * and verify its contents
2001 int iwl_verify_ucode(struct iwl_priv *priv)
2008 image = (__le32 *)priv->ucode_boot.v_addr;
2009 len = priv->ucode_boot.len;
2010 ret = iwlcore_verify_inst_sparse(priv, image, len);
2012 IWL_DEBUG_INFO(priv, "Bootstrap uCode is good in inst SRAM\n");
2016 /* Try initialize */
2017 image = (__le32 *)priv->ucode_init.v_addr;
2018 len = priv->ucode_init.len;
2019 ret = iwlcore_verify_inst_sparse(priv, image, len);
2021 IWL_DEBUG_INFO(priv, "Initialize uCode is good in inst SRAM\n");
2025 /* Try runtime/protocol */
2026 image = (__le32 *)priv->ucode_code.v_addr;
2027 len = priv->ucode_code.len;
2028 ret = iwlcore_verify_inst_sparse(priv, image, len);
2030 IWL_DEBUG_INFO(priv, "Runtime uCode is good in inst SRAM\n");
2034 IWL_ERR(priv, "NO VALID UCODE IMAGE IN INSTRUCTION SRAM!!\n");
2036 /* Since nothing seems to match, show first several data entries in
2037 * instruction SRAM, so maybe visual inspection will give a clue.
2038 * Selection of bootstrap image (vs. other images) is arbitrary. */
2039 image = (__le32 *)priv->ucode_boot.v_addr;
2040 len = priv->ucode_boot.len;
2041 ret = iwl_verify_inst_full(priv, image, len);
2045 EXPORT_SYMBOL(iwl_verify_ucode);
2048 void iwl_rf_kill_ct_config(struct iwl_priv *priv)
2050 struct iwl_ct_kill_config cmd;
2051 struct iwl_ct_kill_throttling_config adv_cmd;
2052 unsigned long flags;
2055 spin_lock_irqsave(&priv->lock, flags);
2056 iwl_write32(priv, CSR_UCODE_DRV_GP1_CLR,
2057 CSR_UCODE_DRV_GP1_REG_BIT_CT_KILL_EXIT);
2058 spin_unlock_irqrestore(&priv->lock, flags);
2059 priv->thermal_throttle.ct_kill_toggle = false;
2061 switch (priv->hw_rev & CSR_HW_REV_TYPE_MSK) {
2062 case CSR_HW_REV_TYPE_1000:
2063 case CSR_HW_REV_TYPE_6x00:
2064 case CSR_HW_REV_TYPE_6x50:
2065 adv_cmd.critical_temperature_enter =
2066 cpu_to_le32(priv->hw_params.ct_kill_threshold);
2067 adv_cmd.critical_temperature_exit =
2068 cpu_to_le32(priv->hw_params.ct_kill_exit_threshold);
2070 ret = iwl_send_cmd_pdu(priv, REPLY_CT_KILL_CONFIG_CMD,
2071 sizeof(adv_cmd), &adv_cmd);
2073 IWL_ERR(priv, "REPLY_CT_KILL_CONFIG_CMD failed\n");
2075 IWL_DEBUG_INFO(priv, "REPLY_CT_KILL_CONFIG_CMD "
2077 "critical temperature enter is %d,"
2079 priv->hw_params.ct_kill_threshold,
2080 priv->hw_params.ct_kill_exit_threshold);
2083 cmd.critical_temperature_R =
2084 cpu_to_le32(priv->hw_params.ct_kill_threshold);
2086 ret = iwl_send_cmd_pdu(priv, REPLY_CT_KILL_CONFIG_CMD,
2089 IWL_ERR(priv, "REPLY_CT_KILL_CONFIG_CMD failed\n");
2091 IWL_DEBUG_INFO(priv, "REPLY_CT_KILL_CONFIG_CMD "
2093 "critical temperature is %d\n",
2094 priv->hw_params.ct_kill_threshold);
2098 EXPORT_SYMBOL(iwl_rf_kill_ct_config);
2104 * Use: Sets the device's internal card state to enable, disable, or halt
2106 * When in the 'enable' state the card operates as normal.
2107 * When in the 'disable' state, the card enters into a low power mode.
2108 * When in the 'halt' state, the card is shut down and must be fully
2109 * restarted to come back on.
2111 int iwl_send_card_state(struct iwl_priv *priv, u32 flags, u8 meta_flag)
2113 struct iwl_host_cmd cmd = {
2114 .id = REPLY_CARD_STATE_CMD,
2120 return iwl_send_cmd(priv, &cmd);
2123 void iwl_rx_pm_sleep_notif(struct iwl_priv *priv,
2124 struct iwl_rx_mem_buffer *rxb)
2126 #ifdef CONFIG_IWLWIFI_DEBUG
2127 struct iwl_rx_packet *pkt = (struct iwl_rx_packet *)rxb->skb->data;
2128 struct iwl_sleep_notification *sleep = &(pkt->u.sleep_notif);
2129 IWL_DEBUG_RX(priv, "sleep mode: %d, src: %d\n",
2130 sleep->pm_sleep_mode, sleep->pm_wakeup_src);
2133 EXPORT_SYMBOL(iwl_rx_pm_sleep_notif);
2135 void iwl_rx_pm_debug_statistics_notif(struct iwl_priv *priv,
2136 struct iwl_rx_mem_buffer *rxb)
2138 struct iwl_rx_packet *pkt = (struct iwl_rx_packet *)rxb->skb->data;
2139 u32 len = le32_to_cpu(pkt->len_n_flags) & FH_RSCSR_FRAME_SIZE_MSK;
2140 IWL_DEBUG_RADIO(priv, "Dumping %d bytes of unhandled "
2141 "notification for %s:\n", len,
2142 get_cmd_string(pkt->hdr.cmd));
2143 iwl_print_hex_dump(priv, IWL_DL_RADIO, pkt->u.raw, len);
2145 EXPORT_SYMBOL(iwl_rx_pm_debug_statistics_notif);
2147 void iwl_rx_reply_error(struct iwl_priv *priv,
2148 struct iwl_rx_mem_buffer *rxb)
2150 struct iwl_rx_packet *pkt = (struct iwl_rx_packet *)rxb->skb->data;
2152 IWL_ERR(priv, "Error Reply type 0x%08X cmd %s (0x%02X) "
2153 "seq 0x%04X ser 0x%08X\n",
2154 le32_to_cpu(pkt->u.err_resp.error_type),
2155 get_cmd_string(pkt->u.err_resp.cmd_id),
2156 pkt->u.err_resp.cmd_id,
2157 le16_to_cpu(pkt->u.err_resp.bad_cmd_seq_num),
2158 le32_to_cpu(pkt->u.err_resp.error_info));
2160 EXPORT_SYMBOL(iwl_rx_reply_error);
2162 void iwl_clear_isr_stats(struct iwl_priv *priv)
2164 memset(&priv->isr_stats, 0, sizeof(priv->isr_stats));
2167 int iwl_mac_conf_tx(struct ieee80211_hw *hw, u16 queue,
2168 const struct ieee80211_tx_queue_params *params)
2170 struct iwl_priv *priv = hw->priv;
2171 unsigned long flags;
2174 IWL_DEBUG_MAC80211(priv, "enter\n");
2176 if (!iwl_is_ready_rf(priv)) {
2177 IWL_DEBUG_MAC80211(priv, "leave - RF not ready\n");
2181 if (queue >= AC_NUM) {
2182 IWL_DEBUG_MAC80211(priv, "leave - queue >= AC_NUM %d\n", queue);
2186 q = AC_NUM - 1 - queue;
2188 spin_lock_irqsave(&priv->lock, flags);
2190 priv->qos_data.def_qos_parm.ac[q].cw_min = cpu_to_le16(params->cw_min);
2191 priv->qos_data.def_qos_parm.ac[q].cw_max = cpu_to_le16(params->cw_max);
2192 priv->qos_data.def_qos_parm.ac[q].aifsn = params->aifs;
2193 priv->qos_data.def_qos_parm.ac[q].edca_txop =
2194 cpu_to_le16((params->txop * 32));
2196 priv->qos_data.def_qos_parm.ac[q].reserved1 = 0;
2197 priv->qos_data.qos_active = 1;
2199 if (priv->iw_mode == NL80211_IFTYPE_AP)
2200 iwl_activate_qos(priv, 1);
2201 else if (priv->assoc_id && iwl_is_associated(priv))
2202 iwl_activate_qos(priv, 0);
2204 spin_unlock_irqrestore(&priv->lock, flags);
2206 IWL_DEBUG_MAC80211(priv, "leave\n");
2209 EXPORT_SYMBOL(iwl_mac_conf_tx);
2211 static void iwl_ht_conf(struct iwl_priv *priv,
2212 struct ieee80211_bss_conf *bss_conf)
2214 struct iwl_ht_config *ht_conf = &priv->current_ht_config;
2215 struct ieee80211_sta *sta;
2217 IWL_DEBUG_MAC80211(priv, "enter: \n");
2219 if (!ht_conf->is_ht)
2222 ht_conf->ht_protection =
2223 bss_conf->ht_operation_mode & IEEE80211_HT_OP_MODE_PROTECTION;
2224 ht_conf->non_GF_STA_present =
2225 !!(bss_conf->ht_operation_mode & IEEE80211_HT_OP_MODE_NON_GF_STA_PRSNT);
2227 ht_conf->single_chain_sufficient = false;
2229 switch (priv->iw_mode) {
2230 case NL80211_IFTYPE_STATION:
2232 sta = ieee80211_find_sta(priv->hw, priv->bssid);
2234 struct ieee80211_sta_ht_cap *ht_cap = &sta->ht_cap;
2237 maxstreams = (ht_cap->mcs.tx_params &
2238 IEEE80211_HT_MCS_TX_MAX_STREAMS_MASK)
2239 >> IEEE80211_HT_MCS_TX_MAX_STREAMS_SHIFT;
2242 if ((ht_cap->mcs.rx_mask[1] == 0) &&
2243 (ht_cap->mcs.rx_mask[2] == 0))
2244 ht_conf->single_chain_sufficient = true;
2245 if (maxstreams <= 1)
2246 ht_conf->single_chain_sufficient = true;
2249 * If at all, this can only happen through a race
2250 * when the AP disconnects us while we're still
2251 * setting up the connection, in that case mac80211
2252 * will soon tell us about that.
2254 ht_conf->single_chain_sufficient = true;
2258 case NL80211_IFTYPE_ADHOC:
2259 ht_conf->single_chain_sufficient = true;
2265 IWL_DEBUG_MAC80211(priv, "leave\n");
2268 #define IWL_DELAY_NEXT_SCAN_AFTER_ASSOC (HZ*6)
2269 void iwl_bss_info_changed(struct ieee80211_hw *hw,
2270 struct ieee80211_vif *vif,
2271 struct ieee80211_bss_conf *bss_conf,
2274 struct iwl_priv *priv = hw->priv;
2277 IWL_DEBUG_MAC80211(priv, "changes = 0x%X\n", changes);
2279 if (!iwl_is_alive(priv))
2282 mutex_lock(&priv->mutex);
2284 if (changes & BSS_CHANGED_BEACON &&
2285 priv->iw_mode == NL80211_IFTYPE_AP) {
2286 dev_kfree_skb(priv->ibss_beacon);
2287 priv->ibss_beacon = ieee80211_beacon_get(hw, vif);
2290 if (changes & BSS_CHANGED_BEACON_INT) {
2291 priv->beacon_int = bss_conf->beacon_int;
2292 /* TODO: in AP mode, do something to make this take effect */
2295 if (changes & BSS_CHANGED_BSSID) {
2296 IWL_DEBUG_MAC80211(priv, "BSSID %pM\n", bss_conf->bssid);
2299 * If there is currently a HW scan going on in the
2300 * background then we need to cancel it else the RXON
2301 * below/in post_associate will fail.
2303 if (iwl_scan_cancel_timeout(priv, 100)) {
2304 IWL_WARN(priv, "Aborted scan still in progress after 100ms\n");
2305 IWL_DEBUG_MAC80211(priv, "leaving - scan abort failed.\n");
2306 mutex_unlock(&priv->mutex);
2310 /* mac80211 only sets assoc when in STATION mode */
2311 if (priv->iw_mode == NL80211_IFTYPE_ADHOC ||
2313 memcpy(priv->staging_rxon.bssid_addr,
2314 bss_conf->bssid, ETH_ALEN);
2316 /* currently needed in a few places */
2317 memcpy(priv->bssid, bss_conf->bssid, ETH_ALEN);
2319 priv->staging_rxon.filter_flags &=
2320 ~RXON_FILTER_ASSOC_MSK;
2326 * This needs to be after setting the BSSID in case
2327 * mac80211 decides to do both changes at once because
2328 * it will invoke post_associate.
2330 if (priv->iw_mode == NL80211_IFTYPE_ADHOC &&
2331 changes & BSS_CHANGED_BEACON) {
2332 struct sk_buff *beacon = ieee80211_beacon_get(hw, vif);
2335 iwl_mac_beacon_update(hw, beacon);
2338 if (changes & BSS_CHANGED_ERP_PREAMBLE) {
2339 IWL_DEBUG_MAC80211(priv, "ERP_PREAMBLE %d\n",
2340 bss_conf->use_short_preamble);
2341 if (bss_conf->use_short_preamble)
2342 priv->staging_rxon.flags |= RXON_FLG_SHORT_PREAMBLE_MSK;
2344 priv->staging_rxon.flags &= ~RXON_FLG_SHORT_PREAMBLE_MSK;
2347 if (changes & BSS_CHANGED_ERP_CTS_PROT) {
2348 IWL_DEBUG_MAC80211(priv, "ERP_CTS %d\n", bss_conf->use_cts_prot);
2349 if (bss_conf->use_cts_prot && (priv->band != IEEE80211_BAND_5GHZ))
2350 priv->staging_rxon.flags |= RXON_FLG_TGG_PROTECT_MSK;
2352 priv->staging_rxon.flags &= ~RXON_FLG_TGG_PROTECT_MSK;
2355 if (changes & BSS_CHANGED_BASIC_RATES) {
2356 /* XXX use this information
2358 * To do that, remove code from iwl_set_rate() and put something
2362 priv->staging_rxon.ofdm_basic_rates =
2363 bss_conf->basic_rates;
2365 priv->staging_rxon.ofdm_basic_rates =
2366 bss_conf->basic_rates >> 4;
2367 priv->staging_rxon.cck_basic_rates =
2368 bss_conf->basic_rates & 0xF;
2372 if (changes & BSS_CHANGED_HT) {
2373 iwl_ht_conf(priv, bss_conf);
2375 if (priv->cfg->ops->hcmd->set_rxon_chain)
2376 priv->cfg->ops->hcmd->set_rxon_chain(priv);
2379 if (changes & BSS_CHANGED_ASSOC) {
2380 IWL_DEBUG_MAC80211(priv, "ASSOC %d\n", bss_conf->assoc);
2381 if (bss_conf->assoc) {
2382 priv->assoc_id = bss_conf->aid;
2383 priv->beacon_int = bss_conf->beacon_int;
2384 priv->timestamp = bss_conf->timestamp;
2385 priv->assoc_capability = bss_conf->assoc_capability;
2388 * We have just associated, don't start scan too early
2389 * leave time for EAPOL exchange to complete.
2391 * XXX: do this in mac80211
2393 priv->next_scan_jiffies = jiffies +
2394 IWL_DELAY_NEXT_SCAN_AFTER_ASSOC;
2395 if (!iwl_is_rfkill(priv))
2396 priv->cfg->ops->lib->post_associate(priv);
2402 if (changes && iwl_is_associated(priv) && priv->assoc_id) {
2403 IWL_DEBUG_MAC80211(priv, "Changes (%#x) while associated\n",
2405 ret = iwl_send_rxon_assoc(priv);
2407 /* Sync active_rxon with latest change. */
2408 memcpy((void *)&priv->active_rxon,
2409 &priv->staging_rxon,
2410 sizeof(struct iwl_rxon_cmd));
2414 mutex_unlock(&priv->mutex);
2416 IWL_DEBUG_MAC80211(priv, "leave\n");
2418 EXPORT_SYMBOL(iwl_bss_info_changed);
2420 int iwl_mac_beacon_update(struct ieee80211_hw *hw, struct sk_buff *skb)
2422 struct iwl_priv *priv = hw->priv;
2423 unsigned long flags;
2426 IWL_DEBUG_MAC80211(priv, "enter\n");
2428 if (!iwl_is_ready_rf(priv)) {
2429 IWL_DEBUG_MAC80211(priv, "leave - RF not ready\n");
2433 if (priv->iw_mode != NL80211_IFTYPE_ADHOC) {
2434 IWL_DEBUG_MAC80211(priv, "leave - not IBSS\n");
2438 spin_lock_irqsave(&priv->lock, flags);
2440 if (priv->ibss_beacon)
2441 dev_kfree_skb(priv->ibss_beacon);
2443 priv->ibss_beacon = skb;
2446 timestamp = ((struct ieee80211_mgmt *)skb->data)->u.beacon.timestamp;
2447 priv->timestamp = le64_to_cpu(timestamp);
2449 IWL_DEBUG_MAC80211(priv, "leave\n");
2450 spin_unlock_irqrestore(&priv->lock, flags);
2452 iwl_reset_qos(priv);
2454 priv->cfg->ops->lib->post_associate(priv);
2459 EXPORT_SYMBOL(iwl_mac_beacon_update);
2461 int iwl_set_mode(struct iwl_priv *priv, int mode)
2463 if (mode == NL80211_IFTYPE_ADHOC) {
2464 const struct iwl_channel_info *ch_info;
2466 ch_info = iwl_get_channel_info(priv,
2468 le16_to_cpu(priv->staging_rxon.channel));
2470 if (!ch_info || !is_channel_ibss(ch_info)) {
2471 IWL_ERR(priv, "channel %d not IBSS channel\n",
2472 le16_to_cpu(priv->staging_rxon.channel));
2477 iwl_connection_init_rx_config(priv, mode);
2479 if (priv->cfg->ops->hcmd->set_rxon_chain)
2480 priv->cfg->ops->hcmd->set_rxon_chain(priv);
2482 memcpy(priv->staging_rxon.node_addr, priv->mac_addr, ETH_ALEN);
2484 iwl_clear_stations_table(priv);
2486 /* dont commit rxon if rf-kill is on*/
2487 if (!iwl_is_ready_rf(priv))
2490 iwlcore_commit_rxon(priv);
2494 EXPORT_SYMBOL(iwl_set_mode);
2496 int iwl_mac_add_interface(struct ieee80211_hw *hw,
2497 struct ieee80211_if_init_conf *conf)
2499 struct iwl_priv *priv = hw->priv;
2500 unsigned long flags;
2502 IWL_DEBUG_MAC80211(priv, "enter: type %d\n", conf->type);
2505 IWL_DEBUG_MAC80211(priv, "leave - vif != NULL\n");
2509 spin_lock_irqsave(&priv->lock, flags);
2510 priv->vif = conf->vif;
2511 priv->iw_mode = conf->type;
2513 spin_unlock_irqrestore(&priv->lock, flags);
2515 mutex_lock(&priv->mutex);
2517 if (conf->mac_addr) {
2518 IWL_DEBUG_MAC80211(priv, "Set %pM\n", conf->mac_addr);
2519 memcpy(priv->mac_addr, conf->mac_addr, ETH_ALEN);
2522 if (iwl_set_mode(priv, conf->type) == -EAGAIN)
2523 /* we are not ready, will run again when ready */
2524 set_bit(STATUS_MODE_PENDING, &priv->status);
2526 mutex_unlock(&priv->mutex);
2528 IWL_DEBUG_MAC80211(priv, "leave\n");
2531 EXPORT_SYMBOL(iwl_mac_add_interface);
2533 void iwl_mac_remove_interface(struct ieee80211_hw *hw,
2534 struct ieee80211_if_init_conf *conf)
2536 struct iwl_priv *priv = hw->priv;
2538 IWL_DEBUG_MAC80211(priv, "enter\n");
2540 mutex_lock(&priv->mutex);
2542 if (iwl_is_ready_rf(priv)) {
2543 iwl_scan_cancel_timeout(priv, 100);
2544 priv->staging_rxon.filter_flags &= ~RXON_FILTER_ASSOC_MSK;
2545 iwlcore_commit_rxon(priv);
2547 if (priv->vif == conf->vif) {
2549 memset(priv->bssid, 0, ETH_ALEN);
2551 mutex_unlock(&priv->mutex);
2553 IWL_DEBUG_MAC80211(priv, "leave\n");
2556 EXPORT_SYMBOL(iwl_mac_remove_interface);
2559 * iwl_mac_config - mac80211 config callback
2561 * We ignore conf->flags & IEEE80211_CONF_SHORT_SLOT_TIME since it seems to
2562 * be set inappropriately and the driver currently sets the hardware up to
2563 * use it whenever needed.
2565 int iwl_mac_config(struct ieee80211_hw *hw, u32 changed)
2567 struct iwl_priv *priv = hw->priv;
2568 const struct iwl_channel_info *ch_info;
2569 struct ieee80211_conf *conf = &hw->conf;
2570 struct iwl_ht_config *ht_conf = &priv->current_ht_config;
2571 unsigned long flags = 0;
2574 int scan_active = 0;
2576 mutex_lock(&priv->mutex);
2578 IWL_DEBUG_MAC80211(priv, "enter to channel %d changed 0x%X\n",
2579 conf->channel->hw_value, changed);
2581 if (unlikely(!priv->cfg->mod_params->disable_hw_scan &&
2582 test_bit(STATUS_SCANNING, &priv->status))) {
2584 IWL_DEBUG_MAC80211(priv, "leave - scanning\n");
2588 /* during scanning mac80211 will delay channel setting until
2589 * scan finish with changed = 0
2591 if (!changed || (changed & IEEE80211_CONF_CHANGE_CHANNEL)) {
2595 ch = ieee80211_frequency_to_channel(conf->channel->center_freq);
2596 ch_info = iwl_get_channel_info(priv, conf->channel->band, ch);
2597 if (!is_channel_valid(ch_info)) {
2598 IWL_DEBUG_MAC80211(priv, "leave - invalid channel\n");
2603 if (priv->iw_mode == NL80211_IFTYPE_ADHOC &&
2604 !is_channel_ibss(ch_info)) {
2605 IWL_ERR(priv, "channel %d in band %d not "
2607 conf->channel->hw_value, conf->channel->band);
2612 spin_lock_irqsave(&priv->lock, flags);
2614 /* Configure HT40 channels */
2615 ht_conf->is_ht = conf_is_ht(conf);
2616 if (ht_conf->is_ht) {
2617 if (conf_is_ht40_minus(conf)) {
2618 ht_conf->extension_chan_offset =
2619 IEEE80211_HT_PARAM_CHA_SEC_BELOW;
2620 ht_conf->is_40mhz = true;
2621 } else if (conf_is_ht40_plus(conf)) {
2622 ht_conf->extension_chan_offset =
2623 IEEE80211_HT_PARAM_CHA_SEC_ABOVE;
2624 ht_conf->is_40mhz = true;
2626 ht_conf->extension_chan_offset =
2627 IEEE80211_HT_PARAM_CHA_SEC_NONE;
2628 ht_conf->is_40mhz = false;
2631 ht_conf->is_40mhz = false;
2632 /* Default to no protection. Protection mode will later be set
2633 * from BSS config in iwl_ht_conf */
2634 ht_conf->ht_protection = IEEE80211_HT_OP_MODE_PROTECTION_NONE;
2636 /* if we are switching from ht to 2.4 clear flags
2637 * from any ht related info since 2.4 does not
2639 if ((le16_to_cpu(priv->staging_rxon.channel) != ch))
2640 priv->staging_rxon.flags = 0;
2642 iwl_set_rxon_channel(priv, conf->channel);
2644 iwl_set_flags_for_band(priv, conf->channel->band);
2645 spin_unlock_irqrestore(&priv->lock, flags);
2647 /* The list of supported rates and rate mask can be different
2648 * for each band; since the band may have changed, reset
2649 * the rate mask to what mac80211 lists */
2653 if (changed & IEEE80211_CONF_CHANGE_PS) {
2654 ret = iwl_power_update_mode(priv, false);
2656 IWL_DEBUG_MAC80211(priv, "Error setting sleep level\n");
2659 if (changed & IEEE80211_CONF_CHANGE_POWER) {
2660 IWL_DEBUG_MAC80211(priv, "TX Power old=%d new=%d\n",
2661 priv->tx_power_user_lmt, conf->power_level);
2663 iwl_set_tx_power(priv, conf->power_level, false);
2666 /* call to ensure that 4965 rx_chain is set properly in monitor mode */
2667 if (priv->cfg->ops->hcmd->set_rxon_chain)
2668 priv->cfg->ops->hcmd->set_rxon_chain(priv);
2670 if (!iwl_is_ready(priv)) {
2671 IWL_DEBUG_MAC80211(priv, "leave - not ready\n");
2678 if (memcmp(&priv->active_rxon,
2679 &priv->staging_rxon, sizeof(priv->staging_rxon)))
2680 iwlcore_commit_rxon(priv);
2682 IWL_DEBUG_INFO(priv, "Not re-sending same RXON configuration.\n");
2686 IWL_DEBUG_MAC80211(priv, "leave\n");
2687 mutex_unlock(&priv->mutex);
2690 EXPORT_SYMBOL(iwl_mac_config);
2692 int iwl_mac_get_tx_stats(struct ieee80211_hw *hw,
2693 struct ieee80211_tx_queue_stats *stats)
2695 struct iwl_priv *priv = hw->priv;
2697 struct iwl_tx_queue *txq;
2698 struct iwl_queue *q;
2699 unsigned long flags;
2701 IWL_DEBUG_MAC80211(priv, "enter\n");
2703 if (!iwl_is_ready_rf(priv)) {
2704 IWL_DEBUG_MAC80211(priv, "leave - RF not ready\n");
2708 spin_lock_irqsave(&priv->lock, flags);
2710 for (i = 0; i < AC_NUM; i++) {
2711 txq = &priv->txq[i];
2713 avail = iwl_queue_space(q);
2715 stats[i].len = q->n_window - avail;
2716 stats[i].limit = q->n_window - q->high_mark;
2717 stats[i].count = q->n_window;
2720 spin_unlock_irqrestore(&priv->lock, flags);
2722 IWL_DEBUG_MAC80211(priv, "leave\n");
2726 EXPORT_SYMBOL(iwl_mac_get_tx_stats);
2728 void iwl_mac_reset_tsf(struct ieee80211_hw *hw)
2730 struct iwl_priv *priv = hw->priv;
2731 unsigned long flags;
2733 mutex_lock(&priv->mutex);
2734 IWL_DEBUG_MAC80211(priv, "enter\n");
2736 spin_lock_irqsave(&priv->lock, flags);
2737 memset(&priv->current_ht_config, 0, sizeof(struct iwl_ht_config));
2738 spin_unlock_irqrestore(&priv->lock, flags);
2740 iwl_reset_qos(priv);
2742 spin_lock_irqsave(&priv->lock, flags);
2744 priv->assoc_capability = 0;
2745 priv->assoc_station_added = 0;
2747 /* new association get rid of ibss beacon skb */
2748 if (priv->ibss_beacon)
2749 dev_kfree_skb(priv->ibss_beacon);
2751 priv->ibss_beacon = NULL;
2753 priv->beacon_int = priv->vif->bss_conf.beacon_int;
2754 priv->timestamp = 0;
2755 if ((priv->iw_mode == NL80211_IFTYPE_STATION))
2756 priv->beacon_int = 0;
2758 spin_unlock_irqrestore(&priv->lock, flags);
2760 if (!iwl_is_ready_rf(priv)) {
2761 IWL_DEBUG_MAC80211(priv, "leave - not ready\n");
2762 mutex_unlock(&priv->mutex);
2766 /* we are restarting association process
2767 * clear RXON_FILTER_ASSOC_MSK bit
2769 if (priv->iw_mode != NL80211_IFTYPE_AP) {
2770 iwl_scan_cancel_timeout(priv, 100);
2771 priv->staging_rxon.filter_flags &= ~RXON_FILTER_ASSOC_MSK;
2772 iwlcore_commit_rxon(priv);
2775 if (priv->iw_mode != NL80211_IFTYPE_ADHOC) {
2776 IWL_DEBUG_MAC80211(priv, "leave - not in IBSS\n");
2777 mutex_unlock(&priv->mutex);
2783 mutex_unlock(&priv->mutex);
2785 IWL_DEBUG_MAC80211(priv, "leave\n");
2787 EXPORT_SYMBOL(iwl_mac_reset_tsf);
2789 #ifdef CONFIG_IWLWIFI_DEBUGFS
2791 #define IWL_TRAFFIC_DUMP_SIZE (IWL_TRAFFIC_ENTRY_SIZE * IWL_TRAFFIC_ENTRIES)
2793 void iwl_reset_traffic_log(struct iwl_priv *priv)
2795 priv->tx_traffic_idx = 0;
2796 priv->rx_traffic_idx = 0;
2797 if (priv->tx_traffic)
2798 memset(priv->tx_traffic, 0, IWL_TRAFFIC_DUMP_SIZE);
2799 if (priv->rx_traffic)
2800 memset(priv->rx_traffic, 0, IWL_TRAFFIC_DUMP_SIZE);
2803 int iwl_alloc_traffic_mem(struct iwl_priv *priv)
2805 u32 traffic_size = IWL_TRAFFIC_DUMP_SIZE;
2807 if (iwl_debug_level & IWL_DL_TX) {
2808 if (!priv->tx_traffic) {
2810 kzalloc(traffic_size, GFP_KERNEL);
2811 if (!priv->tx_traffic)
2815 if (iwl_debug_level & IWL_DL_RX) {
2816 if (!priv->rx_traffic) {
2818 kzalloc(traffic_size, GFP_KERNEL);
2819 if (!priv->rx_traffic)
2823 iwl_reset_traffic_log(priv);
2826 EXPORT_SYMBOL(iwl_alloc_traffic_mem);
2828 void iwl_free_traffic_mem(struct iwl_priv *priv)
2830 kfree(priv->tx_traffic);
2831 priv->tx_traffic = NULL;
2833 kfree(priv->rx_traffic);
2834 priv->rx_traffic = NULL;
2836 EXPORT_SYMBOL(iwl_free_traffic_mem);
2838 void iwl_dbg_log_tx_data_frame(struct iwl_priv *priv,
2839 u16 length, struct ieee80211_hdr *header)
2844 if (likely(!(iwl_debug_level & IWL_DL_TX)))
2847 if (!priv->tx_traffic)
2850 fc = header->frame_control;
2851 if (ieee80211_is_data(fc)) {
2852 len = (length > IWL_TRAFFIC_ENTRY_SIZE)
2853 ? IWL_TRAFFIC_ENTRY_SIZE : length;
2854 memcpy((priv->tx_traffic +
2855 (priv->tx_traffic_idx * IWL_TRAFFIC_ENTRY_SIZE)),
2857 priv->tx_traffic_idx =
2858 (priv->tx_traffic_idx + 1) % IWL_TRAFFIC_ENTRIES;
2861 EXPORT_SYMBOL(iwl_dbg_log_tx_data_frame);
2863 void iwl_dbg_log_rx_data_frame(struct iwl_priv *priv,
2864 u16 length, struct ieee80211_hdr *header)
2869 if (likely(!(iwl_debug_level & IWL_DL_RX)))
2872 if (!priv->rx_traffic)
2875 fc = header->frame_control;
2876 if (ieee80211_is_data(fc)) {
2877 len = (length > IWL_TRAFFIC_ENTRY_SIZE)
2878 ? IWL_TRAFFIC_ENTRY_SIZE : length;
2879 memcpy((priv->rx_traffic +
2880 (priv->rx_traffic_idx * IWL_TRAFFIC_ENTRY_SIZE)),
2882 priv->rx_traffic_idx =
2883 (priv->rx_traffic_idx + 1) % IWL_TRAFFIC_ENTRIES;
2886 EXPORT_SYMBOL(iwl_dbg_log_rx_data_frame);
2888 const char *get_mgmt_string(int cmd)
2891 IWL_CMD(MANAGEMENT_ASSOC_REQ);
2892 IWL_CMD(MANAGEMENT_ASSOC_RESP);
2893 IWL_CMD(MANAGEMENT_REASSOC_REQ);
2894 IWL_CMD(MANAGEMENT_REASSOC_RESP);
2895 IWL_CMD(MANAGEMENT_PROBE_REQ);
2896 IWL_CMD(MANAGEMENT_PROBE_RESP);
2897 IWL_CMD(MANAGEMENT_BEACON);
2898 IWL_CMD(MANAGEMENT_ATIM);
2899 IWL_CMD(MANAGEMENT_DISASSOC);
2900 IWL_CMD(MANAGEMENT_AUTH);
2901 IWL_CMD(MANAGEMENT_DEAUTH);
2902 IWL_CMD(MANAGEMENT_ACTION);
2909 const char *get_ctrl_string(int cmd)
2912 IWL_CMD(CONTROL_BACK_REQ);
2913 IWL_CMD(CONTROL_BACK);
2914 IWL_CMD(CONTROL_PSPOLL);
2915 IWL_CMD(CONTROL_RTS);
2916 IWL_CMD(CONTROL_CTS);
2917 IWL_CMD(CONTROL_ACK);
2918 IWL_CMD(CONTROL_CFEND);
2919 IWL_CMD(CONTROL_CFENDACK);
2926 void iwl_clear_tx_stats(struct iwl_priv *priv)
2928 memset(&priv->tx_stats, 0, sizeof(struct traffic_stats));
2932 void iwl_clear_rx_stats(struct iwl_priv *priv)
2934 memset(&priv->rx_stats, 0, sizeof(struct traffic_stats));
2938 * if CONFIG_IWLWIFI_DEBUGFS defined, iwl_update_stats function will
2939 * record all the MGMT, CTRL and DATA pkt for both TX and Rx pass.
2940 * Use debugFs to display the rx/rx_statistics
2941 * if CONFIG_IWLWIFI_DEBUGFS not being defined, then no MGMT and CTRL
2942 * information will be recorded, but DATA pkt still will be recorded
2943 * for the reason of iwl_led.c need to control the led blinking based on
2944 * number of tx and rx data.
2947 void iwl_update_stats(struct iwl_priv *priv, bool is_tx, __le16 fc, u16 len)
2949 struct traffic_stats *stats;
2952 stats = &priv->tx_stats;
2954 stats = &priv->rx_stats;
2956 if (ieee80211_is_mgmt(fc)) {
2957 switch (fc & cpu_to_le16(IEEE80211_FCTL_STYPE)) {
2958 case cpu_to_le16(IEEE80211_STYPE_ASSOC_REQ):
2959 stats->mgmt[MANAGEMENT_ASSOC_REQ]++;
2961 case cpu_to_le16(IEEE80211_STYPE_ASSOC_RESP):
2962 stats->mgmt[MANAGEMENT_ASSOC_RESP]++;
2964 case cpu_to_le16(IEEE80211_STYPE_REASSOC_REQ):
2965 stats->mgmt[MANAGEMENT_REASSOC_REQ]++;
2967 case cpu_to_le16(IEEE80211_STYPE_REASSOC_RESP):
2968 stats->mgmt[MANAGEMENT_REASSOC_RESP]++;
2970 case cpu_to_le16(IEEE80211_STYPE_PROBE_REQ):
2971 stats->mgmt[MANAGEMENT_PROBE_REQ]++;
2973 case cpu_to_le16(IEEE80211_STYPE_PROBE_RESP):
2974 stats->mgmt[MANAGEMENT_PROBE_RESP]++;
2976 case cpu_to_le16(IEEE80211_STYPE_BEACON):
2977 stats->mgmt[MANAGEMENT_BEACON]++;
2979 case cpu_to_le16(IEEE80211_STYPE_ATIM):
2980 stats->mgmt[MANAGEMENT_ATIM]++;
2982 case cpu_to_le16(IEEE80211_STYPE_DISASSOC):
2983 stats->mgmt[MANAGEMENT_DISASSOC]++;
2985 case cpu_to_le16(IEEE80211_STYPE_AUTH):
2986 stats->mgmt[MANAGEMENT_AUTH]++;
2988 case cpu_to_le16(IEEE80211_STYPE_DEAUTH):
2989 stats->mgmt[MANAGEMENT_DEAUTH]++;
2991 case cpu_to_le16(IEEE80211_STYPE_ACTION):
2992 stats->mgmt[MANAGEMENT_ACTION]++;
2995 } else if (ieee80211_is_ctl(fc)) {
2996 switch (fc & cpu_to_le16(IEEE80211_FCTL_STYPE)) {
2997 case cpu_to_le16(IEEE80211_STYPE_BACK_REQ):
2998 stats->ctrl[CONTROL_BACK_REQ]++;
3000 case cpu_to_le16(IEEE80211_STYPE_BACK):
3001 stats->ctrl[CONTROL_BACK]++;
3003 case cpu_to_le16(IEEE80211_STYPE_PSPOLL):
3004 stats->ctrl[CONTROL_PSPOLL]++;
3006 case cpu_to_le16(IEEE80211_STYPE_RTS):
3007 stats->ctrl[CONTROL_RTS]++;
3009 case cpu_to_le16(IEEE80211_STYPE_CTS):
3010 stats->ctrl[CONTROL_CTS]++;
3012 case cpu_to_le16(IEEE80211_STYPE_ACK):
3013 stats->ctrl[CONTROL_ACK]++;
3015 case cpu_to_le16(IEEE80211_STYPE_CFEND):
3016 stats->ctrl[CONTROL_CFEND]++;
3018 case cpu_to_le16(IEEE80211_STYPE_CFENDACK):
3019 stats->ctrl[CONTROL_CFENDACK]++;
3025 stats->data_bytes += len;
3028 EXPORT_SYMBOL(iwl_update_stats);
3033 int iwl_pci_suspend(struct pci_dev *pdev, pm_message_t state)
3035 struct iwl_priv *priv = pci_get_drvdata(pdev);
3038 * This function is called when system goes into suspend state
3039 * mac80211 will call iwl_mac_stop() from the mac80211 suspend function
3040 * first but since iwl_mac_stop() has no knowledge of who the caller is,
3041 * it will not call apm_ops.stop() to stop the DMA operation.
3042 * Calling apm_ops.stop here to make sure we stop the DMA.
3044 priv->cfg->ops->lib->apm_ops.stop(priv);
3046 pci_save_state(pdev);
3047 pci_disable_device(pdev);
3048 pci_set_power_state(pdev, PCI_D3hot);
3052 EXPORT_SYMBOL(iwl_pci_suspend);
3054 int iwl_pci_resume(struct pci_dev *pdev)
3056 struct iwl_priv *priv = pci_get_drvdata(pdev);
3059 pci_set_power_state(pdev, PCI_D0);
3060 ret = pci_enable_device(pdev);
3063 pci_restore_state(pdev);
3064 iwl_enable_interrupts(priv);
3068 EXPORT_SYMBOL(iwl_pci_resume);
3070 #endif /* CONFIG_PM */