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)
100 struct ieee80211_tx_rate *r = &info->control.rates[0];
102 info->antenna_sel_tx =
103 ((rate_n_flags & RATE_MCS_ANT_ABC_MSK) >> RATE_MCS_ANT_POS);
104 if (rate_n_flags & RATE_MCS_HT_MSK)
105 r->flags |= IEEE80211_TX_RC_MCS;
106 if (rate_n_flags & RATE_MCS_GF_MSK)
107 r->flags |= IEEE80211_TX_RC_GREEN_FIELD;
108 if (rate_n_flags & RATE_MCS_FAT_MSK)
109 r->flags |= IEEE80211_TX_RC_40_MHZ_WIDTH;
110 if (rate_n_flags & RATE_MCS_DUP_MSK)
111 r->flags |= IEEE80211_TX_RC_DUP_DATA;
112 if (rate_n_flags & RATE_MCS_SGI_MSK)
113 r->flags |= IEEE80211_TX_RC_SHORT_GI;
114 rate_index = iwl_hwrate_to_plcp_idx(rate_n_flags);
115 if (info->band == IEEE80211_BAND_5GHZ)
116 rate_index -= IWL_FIRST_OFDM_RATE;
119 EXPORT_SYMBOL(iwl_hwrate_to_tx_control);
121 int iwl_hwrate_to_plcp_idx(u32 rate_n_flags)
126 if (rate_n_flags & RATE_MCS_HT_MSK) {
127 idx = (rate_n_flags & 0xff);
129 if (idx >= IWL_RATE_MIMO3_6M_PLCP)
130 idx = idx - IWL_RATE_MIMO3_6M_PLCP;
131 else if (idx >= IWL_RATE_MIMO2_6M_PLCP)
132 idx = idx - IWL_RATE_MIMO2_6M_PLCP;
134 idx += IWL_FIRST_OFDM_RATE;
135 /* skip 9M not supported in ht*/
136 if (idx >= IWL_RATE_9M_INDEX)
138 if ((idx >= IWL_FIRST_OFDM_RATE) && (idx <= IWL_LAST_OFDM_RATE))
141 /* legacy rate format, search for match in table */
143 for (idx = 0; idx < ARRAY_SIZE(iwl_rates); idx++)
144 if (iwl_rates[idx].plcp == (rate_n_flags & 0xFF))
150 EXPORT_SYMBOL(iwl_hwrate_to_plcp_idx);
152 u8 iwl_toggle_tx_ant(struct iwl_priv *priv, u8 ant)
156 for (i = 0; i < RATE_ANT_NUM - 1; i++) {
157 ind = (ind + 1) < RATE_ANT_NUM ? ind + 1 : 0;
158 if (priv->hw_params.valid_tx_ant & BIT(ind))
164 const u8 iwl_bcast_addr[ETH_ALEN] = { 0xFF, 0xFF, 0xFF, 0xFF, 0xFF, 0xFF };
165 EXPORT_SYMBOL(iwl_bcast_addr);
168 /* This function both allocates and initializes hw and priv. */
169 struct ieee80211_hw *iwl_alloc_all(struct iwl_cfg *cfg,
170 struct ieee80211_ops *hw_ops)
172 struct iwl_priv *priv;
174 /* mac80211 allocates memory for this device instance, including
175 * space for this driver's private structure */
176 struct ieee80211_hw *hw =
177 ieee80211_alloc_hw(sizeof(struct iwl_priv), hw_ops);
179 printk(KERN_ERR "%s: Can not allocate network device\n",
190 EXPORT_SYMBOL(iwl_alloc_all);
192 void iwl_hw_detect(struct iwl_priv *priv)
194 priv->hw_rev = _iwl_read32(priv, CSR_HW_REV);
195 priv->hw_wa_rev = _iwl_read32(priv, CSR_HW_REV_WA_REG);
196 pci_read_config_byte(priv->pci_dev, PCI_REVISION_ID, &priv->rev_id);
198 EXPORT_SYMBOL(iwl_hw_detect);
200 int iwl_hw_nic_init(struct iwl_priv *priv)
203 struct iwl_rx_queue *rxq = &priv->rxq;
207 spin_lock_irqsave(&priv->lock, flags);
208 priv->cfg->ops->lib->apm_ops.init(priv);
209 iwl_write32(priv, CSR_INT_COALESCING, 512 / 32);
210 spin_unlock_irqrestore(&priv->lock, flags);
212 ret = priv->cfg->ops->lib->apm_ops.set_pwr_src(priv, IWL_PWR_SRC_VMAIN);
214 priv->cfg->ops->lib->apm_ops.config(priv);
216 /* Allocate the RX queue, or reset if it is already allocated */
218 ret = iwl_rx_queue_alloc(priv);
220 IWL_ERR(priv, "Unable to initialize Rx queue\n");
224 iwl_rx_queue_reset(priv, rxq);
226 iwl_rx_replenish(priv);
228 iwl_rx_init(priv, rxq);
230 spin_lock_irqsave(&priv->lock, flags);
232 rxq->need_update = 1;
233 iwl_rx_queue_update_write_ptr(priv, rxq);
235 spin_unlock_irqrestore(&priv->lock, flags);
237 /* Allocate and init all Tx and Command queues */
238 ret = iwl_txq_ctx_reset(priv);
242 set_bit(STATUS_INIT, &priv->status);
246 EXPORT_SYMBOL(iwl_hw_nic_init);
251 void iwl_activate_qos(struct iwl_priv *priv, u8 force)
253 if (test_bit(STATUS_EXIT_PENDING, &priv->status))
256 priv->qos_data.def_qos_parm.qos_flags = 0;
258 if (priv->qos_data.qos_cap.q_AP.queue_request &&
259 !priv->qos_data.qos_cap.q_AP.txop_request)
260 priv->qos_data.def_qos_parm.qos_flags |=
261 QOS_PARAM_FLG_TXOP_TYPE_MSK;
262 if (priv->qos_data.qos_active)
263 priv->qos_data.def_qos_parm.qos_flags |=
264 QOS_PARAM_FLG_UPDATE_EDCA_MSK;
266 if (priv->current_ht_config.is_ht)
267 priv->qos_data.def_qos_parm.qos_flags |= QOS_PARAM_FLG_TGN_MSK;
269 if (force || iwl_is_associated(priv)) {
270 IWL_DEBUG_QOS(priv, "send QoS cmd with Qos active=%d FLAGS=0x%X\n",
271 priv->qos_data.qos_active,
272 priv->qos_data.def_qos_parm.qos_flags);
274 iwl_send_cmd_pdu_async(priv, REPLY_QOS_PARAM,
275 sizeof(struct iwl_qosparam_cmd),
276 &priv->qos_data.def_qos_parm, NULL);
279 EXPORT_SYMBOL(iwl_activate_qos);
282 * AC CWmin CW max AIFSN TXOP Limit TXOP Limit
283 * (802.11b) (802.11a/g)
284 * AC_BK 15 1023 7 0 0
285 * AC_BE 15 1023 3 0 0
286 * AC_VI 7 15 2 6.016ms 3.008ms
287 * AC_VO 3 7 2 3.264ms 1.504ms
289 void iwl_reset_qos(struct iwl_priv *priv)
294 bool is_legacy = false;
298 spin_lock_irqsave(&priv->lock, flags);
299 /* QoS always active in AP and ADHOC mode
300 * In STA mode wait for association
302 if (priv->iw_mode == NL80211_IFTYPE_ADHOC ||
303 priv->iw_mode == NL80211_IFTYPE_AP)
304 priv->qos_data.qos_active = 1;
306 priv->qos_data.qos_active = 0;
308 /* check for legacy mode */
309 if ((priv->iw_mode == NL80211_IFTYPE_ADHOC &&
310 (priv->active_rate & IWL_OFDM_RATES_MASK) == 0) ||
311 (priv->iw_mode == NL80211_IFTYPE_STATION &&
312 (priv->staging_rxon.flags & RXON_FLG_SHORT_SLOT_MSK) == 0)) {
317 if (priv->qos_data.qos_active)
321 priv->qos_data.def_qos_parm.ac[0].cw_min = cpu_to_le16(cw_min);
322 priv->qos_data.def_qos_parm.ac[0].cw_max = cpu_to_le16(cw_max);
323 priv->qos_data.def_qos_parm.ac[0].aifsn = aifs;
324 priv->qos_data.def_qos_parm.ac[0].edca_txop = 0;
325 priv->qos_data.def_qos_parm.ac[0].reserved1 = 0;
327 if (priv->qos_data.qos_active) {
330 priv->qos_data.def_qos_parm.ac[i].cw_min = cpu_to_le16(cw_min);
331 priv->qos_data.def_qos_parm.ac[i].cw_max = cpu_to_le16(cw_max);
332 priv->qos_data.def_qos_parm.ac[i].aifsn = 7;
333 priv->qos_data.def_qos_parm.ac[i].edca_txop = 0;
334 priv->qos_data.def_qos_parm.ac[i].reserved1 = 0;
338 priv->qos_data.def_qos_parm.ac[i].cw_min =
339 cpu_to_le16((cw_min + 1) / 2 - 1);
340 priv->qos_data.def_qos_parm.ac[i].cw_max =
342 priv->qos_data.def_qos_parm.ac[i].aifsn = 2;
344 priv->qos_data.def_qos_parm.ac[i].edca_txop =
347 priv->qos_data.def_qos_parm.ac[i].edca_txop =
349 priv->qos_data.def_qos_parm.ac[i].reserved1 = 0;
353 priv->qos_data.def_qos_parm.ac[i].cw_min =
354 cpu_to_le16((cw_min + 1) / 4 - 1);
355 priv->qos_data.def_qos_parm.ac[i].cw_max =
356 cpu_to_le16((cw_min + 1) / 2 - 1);
357 priv->qos_data.def_qos_parm.ac[i].aifsn = 2;
358 priv->qos_data.def_qos_parm.ac[i].reserved1 = 0;
360 priv->qos_data.def_qos_parm.ac[i].edca_txop =
363 priv->qos_data.def_qos_parm.ac[i].edca_txop =
366 for (i = 1; i < 4; i++) {
367 priv->qos_data.def_qos_parm.ac[i].cw_min =
369 priv->qos_data.def_qos_parm.ac[i].cw_max =
371 priv->qos_data.def_qos_parm.ac[i].aifsn = aifs;
372 priv->qos_data.def_qos_parm.ac[i].edca_txop = 0;
373 priv->qos_data.def_qos_parm.ac[i].reserved1 = 0;
376 IWL_DEBUG_QOS(priv, "set QoS to default \n");
378 spin_unlock_irqrestore(&priv->lock, flags);
380 EXPORT_SYMBOL(iwl_reset_qos);
382 #define MAX_BIT_RATE_40_MHZ 150 /* Mbps */
383 #define MAX_BIT_RATE_20_MHZ 72 /* Mbps */
384 static void iwlcore_init_ht_hw_capab(const struct iwl_priv *priv,
385 struct ieee80211_sta_ht_cap *ht_info,
386 enum ieee80211_band band)
388 u16 max_bit_rate = 0;
389 u8 rx_chains_num = priv->hw_params.rx_chains_num;
390 u8 tx_chains_num = priv->hw_params.tx_chains_num;
393 memset(&ht_info->mcs, 0, sizeof(ht_info->mcs));
395 ht_info->ht_supported = true;
397 ht_info->cap |= IEEE80211_HT_CAP_GRN_FLD;
398 ht_info->cap |= IEEE80211_HT_CAP_SGI_20;
399 ht_info->cap |= (IEEE80211_HT_CAP_SM_PS &
400 (WLAN_HT_CAP_SM_PS_DISABLED << 2));
402 max_bit_rate = MAX_BIT_RATE_20_MHZ;
403 if (priv->hw_params.fat_channel & BIT(band)) {
404 ht_info->cap |= IEEE80211_HT_CAP_SUP_WIDTH_20_40;
405 ht_info->cap |= IEEE80211_HT_CAP_SGI_40;
406 ht_info->mcs.rx_mask[4] = 0x01;
407 max_bit_rate = MAX_BIT_RATE_40_MHZ;
410 if (priv->cfg->mod_params->amsdu_size_8K)
411 ht_info->cap |= IEEE80211_HT_CAP_MAX_AMSDU;
413 ht_info->ampdu_factor = CFG_HT_RX_AMPDU_FACTOR_DEF;
414 ht_info->ampdu_density = CFG_HT_MPDU_DENSITY_DEF;
416 ht_info->mcs.rx_mask[0] = 0xFF;
417 if (rx_chains_num >= 2)
418 ht_info->mcs.rx_mask[1] = 0xFF;
419 if (rx_chains_num >= 3)
420 ht_info->mcs.rx_mask[2] = 0xFF;
422 /* Highest supported Rx data rate */
423 max_bit_rate *= rx_chains_num;
424 WARN_ON(max_bit_rate & ~IEEE80211_HT_MCS_RX_HIGHEST_MASK);
425 ht_info->mcs.rx_highest = cpu_to_le16(max_bit_rate);
427 /* Tx MCS capabilities */
428 ht_info->mcs.tx_params = IEEE80211_HT_MCS_TX_DEFINED;
429 if (tx_chains_num != rx_chains_num) {
430 ht_info->mcs.tx_params |= IEEE80211_HT_MCS_TX_RX_DIFF;
431 ht_info->mcs.tx_params |= ((tx_chains_num - 1) <<
432 IEEE80211_HT_MCS_TX_MAX_STREAMS_SHIFT);
436 static void iwlcore_init_hw_rates(struct iwl_priv *priv,
437 struct ieee80211_rate *rates)
441 for (i = 0; i < IWL_RATE_COUNT; i++) {
442 rates[i].bitrate = iwl_rates[i].ieee * 5;
443 rates[i].hw_value = i; /* Rate scaling will work on indexes */
444 rates[i].hw_value_short = i;
446 if ((i > IWL_LAST_OFDM_RATE) || (i < IWL_FIRST_OFDM_RATE)) {
448 * If CCK != 1M then set short preamble rate flag.
451 (iwl_rates[i].plcp == IWL_RATE_1M_PLCP) ?
452 0 : IEEE80211_RATE_SHORT_PREAMBLE;
459 * iwlcore_init_geos - Initialize mac80211's geo/channel info based from eeprom
461 int iwlcore_init_geos(struct iwl_priv *priv)
463 struct iwl_channel_info *ch;
464 struct ieee80211_supported_band *sband;
465 struct ieee80211_channel *channels;
466 struct ieee80211_channel *geo_ch;
467 struct ieee80211_rate *rates;
470 if (priv->bands[IEEE80211_BAND_2GHZ].n_bitrates ||
471 priv->bands[IEEE80211_BAND_5GHZ].n_bitrates) {
472 IWL_DEBUG_INFO(priv, "Geography modes already initialized.\n");
473 set_bit(STATUS_GEO_CONFIGURED, &priv->status);
477 channels = kzalloc(sizeof(struct ieee80211_channel) *
478 priv->channel_count, GFP_KERNEL);
482 rates = kzalloc((sizeof(struct ieee80211_rate) * (IWL_RATE_COUNT + 1)),
489 /* 5.2GHz channels start after the 2.4GHz channels */
490 sband = &priv->bands[IEEE80211_BAND_5GHZ];
491 sband->channels = &channels[ARRAY_SIZE(iwl_eeprom_band_1)];
493 sband->bitrates = &rates[IWL_FIRST_OFDM_RATE];
494 sband->n_bitrates = IWL_RATE_COUNT - IWL_FIRST_OFDM_RATE;
496 if (priv->cfg->sku & IWL_SKU_N)
497 iwlcore_init_ht_hw_capab(priv, &sband->ht_cap,
498 IEEE80211_BAND_5GHZ);
500 sband = &priv->bands[IEEE80211_BAND_2GHZ];
501 sband->channels = channels;
503 sband->bitrates = rates;
504 sband->n_bitrates = IWL_RATE_COUNT;
506 if (priv->cfg->sku & IWL_SKU_N)
507 iwlcore_init_ht_hw_capab(priv, &sband->ht_cap,
508 IEEE80211_BAND_2GHZ);
510 priv->ieee_channels = channels;
511 priv->ieee_rates = rates;
513 for (i = 0; i < priv->channel_count; i++) {
514 ch = &priv->channel_info[i];
516 /* FIXME: might be removed if scan is OK */
517 if (!is_channel_valid(ch))
520 if (is_channel_a_band(ch))
521 sband = &priv->bands[IEEE80211_BAND_5GHZ];
523 sband = &priv->bands[IEEE80211_BAND_2GHZ];
525 geo_ch = &sband->channels[sband->n_channels++];
527 geo_ch->center_freq =
528 ieee80211_channel_to_frequency(ch->channel);
529 geo_ch->max_power = ch->max_power_avg;
530 geo_ch->max_antenna_gain = 0xff;
531 geo_ch->hw_value = ch->channel;
533 if (is_channel_valid(ch)) {
534 if (!(ch->flags & EEPROM_CHANNEL_IBSS))
535 geo_ch->flags |= IEEE80211_CHAN_NO_IBSS;
537 if (!(ch->flags & EEPROM_CHANNEL_ACTIVE))
538 geo_ch->flags |= IEEE80211_CHAN_PASSIVE_SCAN;
540 if (ch->flags & EEPROM_CHANNEL_RADAR)
541 geo_ch->flags |= IEEE80211_CHAN_RADAR;
543 geo_ch->flags |= ch->fat_extension_channel;
545 if (ch->max_power_avg > priv->tx_power_channel_lmt)
546 priv->tx_power_channel_lmt = ch->max_power_avg;
548 geo_ch->flags |= IEEE80211_CHAN_DISABLED;
551 /* Save flags for reg domain usage */
552 geo_ch->orig_flags = geo_ch->flags;
554 IWL_DEBUG_INFO(priv, "Channel %d Freq=%d[%sGHz] %s flag=0x%X\n",
555 ch->channel, geo_ch->center_freq,
556 is_channel_a_band(ch) ? "5.2" : "2.4",
557 geo_ch->flags & IEEE80211_CHAN_DISABLED ?
558 "restricted" : "valid",
562 if ((priv->bands[IEEE80211_BAND_5GHZ].n_channels == 0) &&
563 priv->cfg->sku & IWL_SKU_A) {
564 IWL_INFO(priv, "Incorrectly detected BG card as ABG. "
565 "Please send your PCI ID 0x%04X:0x%04X to maintainer.\n",
566 priv->pci_dev->device,
567 priv->pci_dev->subsystem_device);
568 priv->cfg->sku &= ~IWL_SKU_A;
571 IWL_INFO(priv, "Tunable channels: %d 802.11bg, %d 802.11a channels\n",
572 priv->bands[IEEE80211_BAND_2GHZ].n_channels,
573 priv->bands[IEEE80211_BAND_5GHZ].n_channels);
575 set_bit(STATUS_GEO_CONFIGURED, &priv->status);
579 EXPORT_SYMBOL(iwlcore_init_geos);
582 * iwlcore_free_geos - undo allocations in iwlcore_init_geos
584 void iwlcore_free_geos(struct iwl_priv *priv)
586 kfree(priv->ieee_channels);
587 kfree(priv->ieee_rates);
588 clear_bit(STATUS_GEO_CONFIGURED, &priv->status);
590 EXPORT_SYMBOL(iwlcore_free_geos);
592 static bool is_single_rx_stream(struct iwl_priv *priv)
594 return !priv->current_ht_config.is_ht ||
595 ((priv->current_ht_config.mcs.rx_mask[1] == 0) &&
596 (priv->current_ht_config.mcs.rx_mask[2] == 0));
599 static u8 iwl_is_channel_extension(struct iwl_priv *priv,
600 enum ieee80211_band band,
601 u16 channel, u8 extension_chan_offset)
603 const struct iwl_channel_info *ch_info;
605 ch_info = iwl_get_channel_info(priv, band, channel);
606 if (!is_channel_valid(ch_info))
609 if (extension_chan_offset == IEEE80211_HT_PARAM_CHA_SEC_ABOVE)
610 return !(ch_info->fat_extension_channel &
611 IEEE80211_CHAN_NO_HT40PLUS);
612 else if (extension_chan_offset == IEEE80211_HT_PARAM_CHA_SEC_BELOW)
613 return !(ch_info->fat_extension_channel &
614 IEEE80211_CHAN_NO_HT40MINUS);
619 u8 iwl_is_fat_tx_allowed(struct iwl_priv *priv,
620 struct ieee80211_sta_ht_cap *sta_ht_inf)
622 struct iwl_ht_info *iwl_ht_conf = &priv->current_ht_config;
624 if ((!iwl_ht_conf->is_ht) ||
625 (iwl_ht_conf->supported_chan_width != IWL_CHANNEL_WIDTH_40MHZ))
628 /* We do not check for IEEE80211_HT_CAP_SUP_WIDTH_20_40
629 * the bit will not set if it is pure 40MHz case
632 if (!sta_ht_inf->ht_supported)
635 #ifdef CONFIG_IWLWIFI_DEBUG
636 if (priv->disable_ht40)
639 return iwl_is_channel_extension(priv, priv->band,
640 le16_to_cpu(priv->staging_rxon.channel),
641 iwl_ht_conf->extension_chan_offset);
643 EXPORT_SYMBOL(iwl_is_fat_tx_allowed);
645 static u16 iwl_adjust_beacon_interval(u16 beacon_val, u16 max_beacon_val)
648 u16 beacon_factor = 0;
650 beacon_factor = (beacon_val + max_beacon_val) / max_beacon_val;
651 new_val = beacon_val / beacon_factor;
654 new_val = max_beacon_val;
659 void iwl_setup_rxon_timing(struct iwl_priv *priv)
662 s32 interval_tm, rem;
664 struct ieee80211_conf *conf = NULL;
667 conf = ieee80211_get_hw_conf(priv->hw);
669 spin_lock_irqsave(&priv->lock, flags);
670 priv->rxon_timing.timestamp = cpu_to_le64(priv->timestamp);
671 priv->rxon_timing.listen_interval = cpu_to_le16(conf->listen_interval);
673 if (priv->iw_mode == NL80211_IFTYPE_STATION) {
674 beacon_int = priv->beacon_int;
675 priv->rxon_timing.atim_window = 0;
677 beacon_int = priv->vif->bss_conf.beacon_int;
679 /* TODO: we need to get atim_window from upper stack
680 * for now we set to 0 */
681 priv->rxon_timing.atim_window = 0;
684 beacon_int = iwl_adjust_beacon_interval(beacon_int,
685 priv->hw_params.max_beacon_itrvl * 1024);
686 priv->rxon_timing.beacon_interval = cpu_to_le16(beacon_int);
688 tsf = priv->timestamp; /* tsf is modifed by do_div: copy it */
689 interval_tm = beacon_int * 1024;
690 rem = do_div(tsf, interval_tm);
691 priv->rxon_timing.beacon_init_val = cpu_to_le32(interval_tm - rem);
693 spin_unlock_irqrestore(&priv->lock, flags);
694 IWL_DEBUG_ASSOC(priv,
695 "beacon interval %d beacon timer %d beacon tim %d\n",
696 le16_to_cpu(priv->rxon_timing.beacon_interval),
697 le32_to_cpu(priv->rxon_timing.beacon_init_val),
698 le16_to_cpu(priv->rxon_timing.atim_window));
700 EXPORT_SYMBOL(iwl_setup_rxon_timing);
702 void iwl_set_rxon_hwcrypto(struct iwl_priv *priv, int hw_decrypt)
704 struct iwl_rxon_cmd *rxon = &priv->staging_rxon;
707 rxon->filter_flags &= ~RXON_FILTER_DIS_DECRYPT_MSK;
709 rxon->filter_flags |= RXON_FILTER_DIS_DECRYPT_MSK;
712 EXPORT_SYMBOL(iwl_set_rxon_hwcrypto);
715 * iwl_check_rxon_cmd - validate RXON structure is valid
717 * NOTE: This is really only useful during development and can eventually
718 * be #ifdef'd out once the driver is stable and folks aren't actively
721 int iwl_check_rxon_cmd(struct iwl_priv *priv)
725 struct iwl_rxon_cmd *rxon = &priv->staging_rxon;
727 if (rxon->flags & RXON_FLG_BAND_24G_MSK) {
728 error |= le32_to_cpu(rxon->flags &
729 (RXON_FLG_TGJ_NARROW_BAND_MSK |
730 RXON_FLG_RADAR_DETECT_MSK));
732 IWL_WARN(priv, "check 24G fields %d | %d\n",
735 error |= (rxon->flags & RXON_FLG_SHORT_SLOT_MSK) ?
736 0 : le32_to_cpu(RXON_FLG_SHORT_SLOT_MSK);
738 IWL_WARN(priv, "check 52 fields %d | %d\n",
740 error |= le32_to_cpu(rxon->flags & RXON_FLG_CCK_MSK);
742 IWL_WARN(priv, "check 52 CCK %d | %d\n",
745 error |= (rxon->node_addr[0] | rxon->bssid_addr[0]) & 0x1;
747 IWL_WARN(priv, "check mac addr %d | %d\n", counter++, error);
749 /* make sure basic rates 6Mbps and 1Mbps are supported */
750 error |= (((rxon->ofdm_basic_rates & IWL_RATE_6M_MASK) == 0) &&
751 ((rxon->cck_basic_rates & IWL_RATE_1M_MASK) == 0));
753 IWL_WARN(priv, "check basic rate %d | %d\n", counter++, error);
755 error |= (le16_to_cpu(rxon->assoc_id) > 2007);
757 IWL_WARN(priv, "check assoc id %d | %d\n", counter++, error);
759 error |= ((rxon->flags & (RXON_FLG_CCK_MSK | RXON_FLG_SHORT_SLOT_MSK))
760 == (RXON_FLG_CCK_MSK | RXON_FLG_SHORT_SLOT_MSK));
762 IWL_WARN(priv, "check CCK and short slot %d | %d\n",
765 error |= ((rxon->flags & (RXON_FLG_CCK_MSK | RXON_FLG_AUTO_DETECT_MSK))
766 == (RXON_FLG_CCK_MSK | RXON_FLG_AUTO_DETECT_MSK));
768 IWL_WARN(priv, "check CCK & auto detect %d | %d\n",
771 error |= ((rxon->flags & (RXON_FLG_AUTO_DETECT_MSK |
772 RXON_FLG_TGG_PROTECT_MSK)) == RXON_FLG_TGG_PROTECT_MSK);
774 IWL_WARN(priv, "check TGG and auto detect %d | %d\n",
778 IWL_WARN(priv, "Tuning to channel %d\n",
779 le16_to_cpu(rxon->channel));
782 IWL_ERR(priv, "Not a valid iwl_rxon_assoc_cmd field values\n");
787 EXPORT_SYMBOL(iwl_check_rxon_cmd);
790 * iwl_full_rxon_required - check if full RXON (vs RXON_ASSOC) cmd is needed
791 * @priv: staging_rxon is compared to active_rxon
793 * If the RXON structure is changing enough to require a new tune,
794 * or is clearing the RXON_FILTER_ASSOC_MSK, then return 1 to indicate that
795 * a new tune (full RXON command, rather than RXON_ASSOC cmd) is required.
797 int iwl_full_rxon_required(struct iwl_priv *priv)
800 /* These items are only settable from the full RXON command */
801 if (!(iwl_is_associated(priv)) ||
802 compare_ether_addr(priv->staging_rxon.bssid_addr,
803 priv->active_rxon.bssid_addr) ||
804 compare_ether_addr(priv->staging_rxon.node_addr,
805 priv->active_rxon.node_addr) ||
806 compare_ether_addr(priv->staging_rxon.wlap_bssid_addr,
807 priv->active_rxon.wlap_bssid_addr) ||
808 (priv->staging_rxon.dev_type != priv->active_rxon.dev_type) ||
809 (priv->staging_rxon.channel != priv->active_rxon.channel) ||
810 (priv->staging_rxon.air_propagation !=
811 priv->active_rxon.air_propagation) ||
812 (priv->staging_rxon.ofdm_ht_single_stream_basic_rates !=
813 priv->active_rxon.ofdm_ht_single_stream_basic_rates) ||
814 (priv->staging_rxon.ofdm_ht_dual_stream_basic_rates !=
815 priv->active_rxon.ofdm_ht_dual_stream_basic_rates) ||
816 (priv->staging_rxon.ofdm_ht_triple_stream_basic_rates !=
817 priv->active_rxon.ofdm_ht_triple_stream_basic_rates) ||
818 (priv->staging_rxon.assoc_id != priv->active_rxon.assoc_id))
821 /* flags, filter_flags, ofdm_basic_rates, and cck_basic_rates can
822 * be updated with the RXON_ASSOC command -- however only some
823 * flag transitions are allowed using RXON_ASSOC */
825 /* Check if we are not switching bands */
826 if ((priv->staging_rxon.flags & RXON_FLG_BAND_24G_MSK) !=
827 (priv->active_rxon.flags & RXON_FLG_BAND_24G_MSK))
830 /* Check if we are switching association toggle */
831 if ((priv->staging_rxon.filter_flags & RXON_FILTER_ASSOC_MSK) !=
832 (priv->active_rxon.filter_flags & RXON_FILTER_ASSOC_MSK))
837 EXPORT_SYMBOL(iwl_full_rxon_required);
839 u8 iwl_rate_get_lowest_plcp(struct iwl_priv *priv)
845 if (priv->staging_rxon.flags & RXON_FLG_BAND_24G_MSK)
846 rate_mask = priv->active_rate_basic & IWL_CCK_RATES_MASK;
848 rate_mask = priv->active_rate_basic & IWL_OFDM_RATES_MASK;
850 /* Find lowest valid rate */
851 for (i = IWL_RATE_1M_INDEX; i != IWL_RATE_INVALID;
852 i = iwl_rates[i].next_ieee) {
853 if (rate_mask & (1 << i))
854 return iwl_rates[i].plcp;
857 /* No valid rate was found. Assign the lowest one */
858 if (priv->staging_rxon.flags & RXON_FLG_BAND_24G_MSK)
859 return IWL_RATE_1M_PLCP;
861 return IWL_RATE_6M_PLCP;
863 EXPORT_SYMBOL(iwl_rate_get_lowest_plcp);
865 void iwl_set_rxon_ht(struct iwl_priv *priv, struct iwl_ht_info *ht_info)
867 struct iwl_rxon_cmd *rxon = &priv->staging_rxon;
869 if (!ht_info->is_ht) {
870 rxon->flags &= ~(RXON_FLG_CHANNEL_MODE_MSK |
871 RXON_FLG_CTRL_CHANNEL_LOC_HI_MSK |
872 RXON_FLG_FAT_PROT_MSK |
873 RXON_FLG_HT_PROT_MSK);
877 /* FIXME: if the definition of ht_protection changed, the "translation"
878 * will be needed for rxon->flags
880 rxon->flags |= cpu_to_le32(ht_info->ht_protection << RXON_FLG_HT_OPERATING_MODE_POS);
882 /* Set up channel bandwidth:
883 * 20 MHz only, 20/40 mixed or pure 40 if fat ok */
884 /* clear the HT channel mode before set the mode */
885 rxon->flags &= ~(RXON_FLG_CHANNEL_MODE_MSK |
886 RXON_FLG_CTRL_CHANNEL_LOC_HI_MSK);
887 if (iwl_is_fat_tx_allowed(priv, NULL)) {
889 if (ht_info->ht_protection == IEEE80211_HT_OP_MODE_PROTECTION_20MHZ) {
890 rxon->flags |= RXON_FLG_CHANNEL_MODE_PURE_40;
891 /* Note: control channel is opposite of extension channel */
892 switch (ht_info->extension_chan_offset) {
893 case IEEE80211_HT_PARAM_CHA_SEC_ABOVE:
894 rxon->flags &= ~RXON_FLG_CTRL_CHANNEL_LOC_HI_MSK;
896 case IEEE80211_HT_PARAM_CHA_SEC_BELOW:
897 rxon->flags |= RXON_FLG_CTRL_CHANNEL_LOC_HI_MSK;
901 /* Note: control channel is opposite of extension channel */
902 switch (ht_info->extension_chan_offset) {
903 case IEEE80211_HT_PARAM_CHA_SEC_ABOVE:
904 rxon->flags &= ~(RXON_FLG_CTRL_CHANNEL_LOC_HI_MSK);
905 rxon->flags |= RXON_FLG_CHANNEL_MODE_MIXED;
907 case IEEE80211_HT_PARAM_CHA_SEC_BELOW:
908 rxon->flags |= RXON_FLG_CTRL_CHANNEL_LOC_HI_MSK;
909 rxon->flags |= RXON_FLG_CHANNEL_MODE_MIXED;
911 case IEEE80211_HT_PARAM_CHA_SEC_NONE:
913 /* channel location only valid if in Mixed mode */
914 IWL_ERR(priv, "invalid extension channel offset\n");
919 rxon->flags |= RXON_FLG_CHANNEL_MODE_LEGACY;
922 if (priv->cfg->ops->hcmd->set_rxon_chain)
923 priv->cfg->ops->hcmd->set_rxon_chain(priv);
925 IWL_DEBUG_ASSOC(priv, "supported HT rate 0x%X 0x%X 0x%X "
926 "rxon flags 0x%X operation mode :0x%X "
927 "extension channel offset 0x%x\n",
928 ht_info->mcs.rx_mask[0],
929 ht_info->mcs.rx_mask[1],
930 ht_info->mcs.rx_mask[2],
931 le32_to_cpu(rxon->flags), ht_info->ht_protection,
932 ht_info->extension_chan_offset);
935 EXPORT_SYMBOL(iwl_set_rxon_ht);
937 #define IWL_NUM_RX_CHAINS_MULTIPLE 3
938 #define IWL_NUM_RX_CHAINS_SINGLE 2
939 #define IWL_NUM_IDLE_CHAINS_DUAL 2
940 #define IWL_NUM_IDLE_CHAINS_SINGLE 1
942 /* Determine how many receiver/antenna chains to use.
943 * More provides better reception via diversity. Fewer saves power.
944 * MIMO (dual stream) requires at least 2, but works better with 3.
945 * This does not determine *which* chains to use, just how many.
947 static int iwl_get_active_rx_chain_count(struct iwl_priv *priv)
949 bool is_single = is_single_rx_stream(priv);
950 bool is_cam = !test_bit(STATUS_POWER_PMI, &priv->status);
952 /* # of Rx chains to use when expecting MIMO. */
953 if (is_single || (!is_cam && (priv->current_ht_config.sm_ps ==
954 WLAN_HT_CAP_SM_PS_STATIC)))
955 return IWL_NUM_RX_CHAINS_SINGLE;
957 return IWL_NUM_RX_CHAINS_MULTIPLE;
960 static int iwl_get_idle_rx_chain_count(struct iwl_priv *priv, int active_cnt)
963 bool is_cam = !test_bit(STATUS_POWER_PMI, &priv->status);
964 /* # Rx chains when idling and maybe trying to save power */
965 switch (priv->current_ht_config.sm_ps) {
966 case WLAN_HT_CAP_SM_PS_STATIC:
967 case WLAN_HT_CAP_SM_PS_DYNAMIC:
968 idle_cnt = (is_cam) ? IWL_NUM_IDLE_CHAINS_DUAL :
969 IWL_NUM_IDLE_CHAINS_SINGLE;
971 case WLAN_HT_CAP_SM_PS_DISABLED:
972 idle_cnt = (is_cam) ? active_cnt : IWL_NUM_IDLE_CHAINS_SINGLE;
974 case WLAN_HT_CAP_SM_PS_INVALID:
976 IWL_ERR(priv, "invalid mimo ps mode %d\n",
977 priv->current_ht_config.sm_ps);
986 static u8 iwl_count_chain_bitmap(u32 chain_bitmap)
989 res = (chain_bitmap & BIT(0)) >> 0;
990 res += (chain_bitmap & BIT(1)) >> 1;
991 res += (chain_bitmap & BIT(2)) >> 2;
992 res += (chain_bitmap & BIT(4)) >> 4;
997 * iwl_is_monitor_mode - Determine if interface in monitor mode
999 * priv->iw_mode is set in add_interface, but add_interface is
1000 * never called for monitor mode. The only way mac80211 informs us about
1001 * monitor mode is through configuring filters (call to configure_filter).
1003 bool iwl_is_monitor_mode(struct iwl_priv *priv)
1005 return !!(priv->staging_rxon.filter_flags & RXON_FILTER_PROMISC_MSK);
1007 EXPORT_SYMBOL(iwl_is_monitor_mode);
1010 * iwl_set_rxon_chain - Set up Rx chain usage in "staging" RXON image
1012 * Selects how many and which Rx receivers/antennas/chains to use.
1013 * This should not be used for scan command ... it puts data in wrong place.
1015 void iwl_set_rxon_chain(struct iwl_priv *priv)
1017 bool is_single = is_single_rx_stream(priv);
1018 bool is_cam = !test_bit(STATUS_POWER_PMI, &priv->status);
1019 u8 idle_rx_cnt, active_rx_cnt, valid_rx_cnt;
1023 /* Tell uCode which antennas are actually connected.
1024 * Before first association, we assume all antennas are connected.
1025 * Just after first association, iwl_chain_noise_calibration()
1026 * checks which antennas actually *are* connected. */
1027 if (priv->chain_noise_data.active_chains)
1028 active_chains = priv->chain_noise_data.active_chains;
1030 active_chains = priv->hw_params.valid_rx_ant;
1032 rx_chain = active_chains << RXON_RX_CHAIN_VALID_POS;
1034 /* How many receivers should we use? */
1035 active_rx_cnt = iwl_get_active_rx_chain_count(priv);
1036 idle_rx_cnt = iwl_get_idle_rx_chain_count(priv, active_rx_cnt);
1039 /* correct rx chain count according hw settings
1040 * and chain noise calibration
1042 valid_rx_cnt = iwl_count_chain_bitmap(active_chains);
1043 if (valid_rx_cnt < active_rx_cnt)
1044 active_rx_cnt = valid_rx_cnt;
1046 if (valid_rx_cnt < idle_rx_cnt)
1047 idle_rx_cnt = valid_rx_cnt;
1049 rx_chain |= active_rx_cnt << RXON_RX_CHAIN_MIMO_CNT_POS;
1050 rx_chain |= idle_rx_cnt << RXON_RX_CHAIN_CNT_POS;
1052 /* copied from 'iwl_bg_request_scan()' */
1053 /* Force use of chains B and C (0x6) for Rx for 4965
1054 * Avoid A (0x1) because of its off-channel reception on A-band.
1055 * MIMO is not used here, but value is required */
1056 if (iwl_is_monitor_mode(priv) &&
1057 !(priv->staging_rxon.flags & RXON_FLG_BAND_24G_MSK) &&
1058 ((priv->hw_rev & CSR_HW_REV_TYPE_MSK) == CSR_HW_REV_TYPE_4965)) {
1059 rx_chain = ANT_ABC << RXON_RX_CHAIN_VALID_POS;
1060 rx_chain |= ANT_BC << RXON_RX_CHAIN_FORCE_SEL_POS;
1061 rx_chain |= ANT_ABC << RXON_RX_CHAIN_FORCE_MIMO_SEL_POS;
1062 rx_chain |= 0x1 << RXON_RX_CHAIN_DRIVER_FORCE_POS;
1065 priv->staging_rxon.rx_chain = cpu_to_le16(rx_chain);
1067 if (!is_single && (active_rx_cnt >= IWL_NUM_RX_CHAINS_SINGLE) && is_cam)
1068 priv->staging_rxon.rx_chain |= RXON_RX_CHAIN_MIMO_FORCE_MSK;
1070 priv->staging_rxon.rx_chain &= ~RXON_RX_CHAIN_MIMO_FORCE_MSK;
1072 IWL_DEBUG_ASSOC(priv, "rx_chain=0x%X active=%d idle=%d\n",
1073 priv->staging_rxon.rx_chain,
1074 active_rx_cnt, idle_rx_cnt);
1076 WARN_ON(active_rx_cnt == 0 || idle_rx_cnt == 0 ||
1077 active_rx_cnt < idle_rx_cnt);
1079 EXPORT_SYMBOL(iwl_set_rxon_chain);
1082 * iwl_set_rxon_channel - Set the phymode and channel values in staging RXON
1083 * @phymode: MODE_IEEE80211A sets to 5.2GHz; all else set to 2.4GHz
1084 * @channel: Any channel valid for the requested phymode
1086 * In addition to setting the staging RXON, priv->phymode is also set.
1088 * NOTE: Does not commit to the hardware; it sets appropriate bit fields
1089 * in the staging RXON flag structure based on the phymode
1091 int iwl_set_rxon_channel(struct iwl_priv *priv, struct ieee80211_channel *ch)
1093 enum ieee80211_band band = ch->band;
1094 u16 channel = ieee80211_frequency_to_channel(ch->center_freq);
1096 if (!iwl_get_channel_info(priv, band, channel)) {
1097 IWL_DEBUG_INFO(priv, "Could not set channel to %d [%d]\n",
1102 if ((le16_to_cpu(priv->staging_rxon.channel) == channel) &&
1103 (priv->band == band))
1106 priv->staging_rxon.channel = cpu_to_le16(channel);
1107 if (band == IEEE80211_BAND_5GHZ)
1108 priv->staging_rxon.flags &= ~RXON_FLG_BAND_24G_MSK;
1110 priv->staging_rxon.flags |= RXON_FLG_BAND_24G_MSK;
1114 IWL_DEBUG_INFO(priv, "Staging channel set to %d [%d]\n", channel, band);
1118 EXPORT_SYMBOL(iwl_set_rxon_channel);
1120 void iwl_set_flags_for_band(struct iwl_priv *priv,
1121 enum ieee80211_band band)
1123 if (band == IEEE80211_BAND_5GHZ) {
1124 priv->staging_rxon.flags &=
1125 ~(RXON_FLG_BAND_24G_MSK | RXON_FLG_AUTO_DETECT_MSK
1126 | RXON_FLG_CCK_MSK);
1127 priv->staging_rxon.flags |= RXON_FLG_SHORT_SLOT_MSK;
1129 /* Copied from iwl_post_associate() */
1130 if (priv->assoc_capability & WLAN_CAPABILITY_SHORT_SLOT_TIME)
1131 priv->staging_rxon.flags |= RXON_FLG_SHORT_SLOT_MSK;
1133 priv->staging_rxon.flags &= ~RXON_FLG_SHORT_SLOT_MSK;
1135 if (priv->iw_mode == NL80211_IFTYPE_ADHOC)
1136 priv->staging_rxon.flags &= ~RXON_FLG_SHORT_SLOT_MSK;
1138 priv->staging_rxon.flags |= RXON_FLG_BAND_24G_MSK;
1139 priv->staging_rxon.flags |= RXON_FLG_AUTO_DETECT_MSK;
1140 priv->staging_rxon.flags &= ~RXON_FLG_CCK_MSK;
1143 EXPORT_SYMBOL(iwl_set_flags_for_band);
1146 * initialize rxon structure with default values from eeprom
1148 void iwl_connection_init_rx_config(struct iwl_priv *priv, int mode)
1150 const struct iwl_channel_info *ch_info;
1152 memset(&priv->staging_rxon, 0, sizeof(priv->staging_rxon));
1155 case NL80211_IFTYPE_AP:
1156 priv->staging_rxon.dev_type = RXON_DEV_TYPE_AP;
1159 case NL80211_IFTYPE_STATION:
1160 priv->staging_rxon.dev_type = RXON_DEV_TYPE_ESS;
1161 priv->staging_rxon.filter_flags = RXON_FILTER_ACCEPT_GRP_MSK;
1164 case NL80211_IFTYPE_ADHOC:
1165 priv->staging_rxon.dev_type = RXON_DEV_TYPE_IBSS;
1166 priv->staging_rxon.flags = RXON_FLG_SHORT_PREAMBLE_MSK;
1167 priv->staging_rxon.filter_flags = RXON_FILTER_BCON_AWARE_MSK |
1168 RXON_FILTER_ACCEPT_GRP_MSK;
1172 IWL_ERR(priv, "Unsupported interface type %d\n", mode);
1177 /* TODO: Figure out when short_preamble would be set and cache from
1179 if (!hw_to_local(priv->hw)->short_preamble)
1180 priv->staging_rxon.flags &= ~RXON_FLG_SHORT_PREAMBLE_MSK;
1182 priv->staging_rxon.flags |= RXON_FLG_SHORT_PREAMBLE_MSK;
1185 ch_info = iwl_get_channel_info(priv, priv->band,
1186 le16_to_cpu(priv->active_rxon.channel));
1189 ch_info = &priv->channel_info[0];
1192 * in some case A channels are all non IBSS
1193 * in this case force B/G channel
1195 if ((priv->iw_mode == NL80211_IFTYPE_ADHOC) &&
1196 !(is_channel_ibss(ch_info)))
1197 ch_info = &priv->channel_info[0];
1199 priv->staging_rxon.channel = cpu_to_le16(ch_info->channel);
1200 priv->band = ch_info->band;
1202 iwl_set_flags_for_band(priv, priv->band);
1204 priv->staging_rxon.ofdm_basic_rates =
1205 (IWL_OFDM_RATES_MASK >> IWL_FIRST_OFDM_RATE) & 0xFF;
1206 priv->staging_rxon.cck_basic_rates =
1207 (IWL_CCK_RATES_MASK >> IWL_FIRST_CCK_RATE) & 0xF;
1209 /* clear both MIX and PURE40 mode flag */
1210 priv->staging_rxon.flags &= ~(RXON_FLG_CHANNEL_MODE_MIXED |
1211 RXON_FLG_CHANNEL_MODE_PURE_40);
1212 memcpy(priv->staging_rxon.node_addr, priv->mac_addr, ETH_ALEN);
1213 memcpy(priv->staging_rxon.wlap_bssid_addr, priv->mac_addr, ETH_ALEN);
1214 priv->staging_rxon.ofdm_ht_single_stream_basic_rates = 0xff;
1215 priv->staging_rxon.ofdm_ht_dual_stream_basic_rates = 0xff;
1216 priv->staging_rxon.ofdm_ht_triple_stream_basic_rates = 0xff;
1218 EXPORT_SYMBOL(iwl_connection_init_rx_config);
1220 static void iwl_set_rate(struct iwl_priv *priv)
1222 const struct ieee80211_supported_band *hw = NULL;
1223 struct ieee80211_rate *rate;
1226 hw = iwl_get_hw_mode(priv, priv->band);
1228 IWL_ERR(priv, "Failed to set rate: unable to get hw mode\n");
1232 priv->active_rate = 0;
1233 priv->active_rate_basic = 0;
1235 for (i = 0; i < hw->n_bitrates; i++) {
1236 rate = &(hw->bitrates[i]);
1237 if (rate->hw_value < IWL_RATE_COUNT)
1238 priv->active_rate |= (1 << rate->hw_value);
1241 IWL_DEBUG_RATE(priv, "Set active_rate = %0x, active_rate_basic = %0x\n",
1242 priv->active_rate, priv->active_rate_basic);
1245 * If a basic rate is configured, then use it (adding IWL_RATE_1M_MASK)
1246 * otherwise set it to the default of all CCK rates and 6, 12, 24 for
1249 if (priv->active_rate_basic & IWL_CCK_BASIC_RATES_MASK)
1250 priv->staging_rxon.cck_basic_rates =
1251 ((priv->active_rate_basic &
1252 IWL_CCK_RATES_MASK) >> IWL_FIRST_CCK_RATE) & 0xF;
1254 priv->staging_rxon.cck_basic_rates =
1255 (IWL_CCK_BASIC_RATES_MASK >> IWL_FIRST_CCK_RATE) & 0xF;
1257 if (priv->active_rate_basic & IWL_OFDM_BASIC_RATES_MASK)
1258 priv->staging_rxon.ofdm_basic_rates =
1259 ((priv->active_rate_basic &
1260 (IWL_OFDM_BASIC_RATES_MASK | IWL_RATE_6M_MASK)) >>
1261 IWL_FIRST_OFDM_RATE) & 0xFF;
1263 priv->staging_rxon.ofdm_basic_rates =
1264 (IWL_OFDM_BASIC_RATES_MASK >> IWL_FIRST_OFDM_RATE) & 0xFF;
1267 void iwl_rx_csa(struct iwl_priv *priv, struct iwl_rx_mem_buffer *rxb)
1269 struct iwl_rx_packet *pkt = (struct iwl_rx_packet *)rxb->skb->data;
1270 struct iwl_rxon_cmd *rxon = (void *)&priv->active_rxon;
1271 struct iwl_csa_notification *csa = &(pkt->u.csa_notif);
1272 IWL_DEBUG_11H(priv, "CSA notif: channel %d, status %d\n",
1273 le16_to_cpu(csa->channel), le32_to_cpu(csa->status));
1274 rxon->channel = csa->channel;
1275 priv->staging_rxon.channel = csa->channel;
1277 EXPORT_SYMBOL(iwl_rx_csa);
1279 #ifdef CONFIG_IWLWIFI_DEBUG
1280 static void iwl_print_rx_config_cmd(struct iwl_priv *priv)
1282 struct iwl_rxon_cmd *rxon = &priv->staging_rxon;
1284 IWL_DEBUG_RADIO(priv, "RX CONFIG:\n");
1285 iwl_print_hex_dump(IWL_DL_RADIO, (u8 *) rxon, sizeof(*rxon));
1286 IWL_DEBUG_RADIO(priv, "u16 channel: 0x%x\n", le16_to_cpu(rxon->channel));
1287 IWL_DEBUG_RADIO(priv, "u32 flags: 0x%08X\n", le32_to_cpu(rxon->flags));
1288 IWL_DEBUG_RADIO(priv, "u32 filter_flags: 0x%08x\n",
1289 le32_to_cpu(rxon->filter_flags));
1290 IWL_DEBUG_RADIO(priv, "u8 dev_type: 0x%x\n", rxon->dev_type);
1291 IWL_DEBUG_RADIO(priv, "u8 ofdm_basic_rates: 0x%02x\n",
1292 rxon->ofdm_basic_rates);
1293 IWL_DEBUG_RADIO(priv, "u8 cck_basic_rates: 0x%02x\n", rxon->cck_basic_rates);
1294 IWL_DEBUG_RADIO(priv, "u8[6] node_addr: %pM\n", rxon->node_addr);
1295 IWL_DEBUG_RADIO(priv, "u8[6] bssid_addr: %pM\n", rxon->bssid_addr);
1296 IWL_DEBUG_RADIO(priv, "u16 assoc_id: 0x%x\n", le16_to_cpu(rxon->assoc_id));
1299 static const char *desc_lookup_text[] = {
1304 "NMI_INTERRUPT_WDG",
1308 "HW_ERROR_TUNE_LOCK",
1309 "HW_ERROR_TEMPERATURE",
1310 "ILLEGAL_CHAN_FREQ",
1313 "NMI_INTERRUPT_HOST",
1314 "NMI_INTERRUPT_ACTION_PT",
1315 "NMI_INTERRUPT_UNKNOWN",
1316 "UCODE_VERSION_MISMATCH",
1317 "HW_ERROR_ABS_LOCK",
1318 "HW_ERROR_CAL_LOCK_FAIL",
1319 "NMI_INTERRUPT_INST_ACTION_PT",
1320 "NMI_INTERRUPT_DATA_ACTION_PT",
1322 "NMI_INTERRUPT_TRM",
1323 "NMI_INTERRUPT_BREAK_POINT"
1331 static const char *desc_lookup(int i)
1333 int max = ARRAY_SIZE(desc_lookup_text) - 1;
1335 if (i < 0 || i > max)
1338 return desc_lookup_text[i];
1341 #define ERROR_START_OFFSET (1 * sizeof(u32))
1342 #define ERROR_ELEM_SIZE (7 * sizeof(u32))
1344 static void iwl_dump_nic_error_log(struct iwl_priv *priv)
1347 u32 desc, time, count, base, data1;
1348 u32 blink1, blink2, ilink1, ilink2;
1350 switch (priv->ucode_type) {
1352 base = le32_to_cpu(priv->card_alive.error_event_table_ptr);
1355 base = le32_to_cpu(priv->card_alive_init.error_event_table_ptr);
1358 IWL_ERR(priv, "uCode image not available\n");
1362 if (!priv->cfg->ops->lib->is_valid_rtc_data_addr(base)) {
1363 IWL_ERR(priv, "Not valid error log pointer 0x%08X\n", base);
1367 count = iwl_read_targ_mem(priv, base);
1369 if (ERROR_START_OFFSET <= count * ERROR_ELEM_SIZE) {
1370 IWL_ERR(priv, "Start IWL Error Log Dump:\n");
1371 IWL_ERR(priv, "Status: 0x%08lX, count: %d\n",
1372 priv->status, count);
1375 desc = iwl_read_targ_mem(priv, base + 1 * sizeof(u32));
1376 blink1 = iwl_read_targ_mem(priv, base + 3 * sizeof(u32));
1377 blink2 = iwl_read_targ_mem(priv, base + 4 * sizeof(u32));
1378 ilink1 = iwl_read_targ_mem(priv, base + 5 * sizeof(u32));
1379 ilink2 = iwl_read_targ_mem(priv, base + 6 * sizeof(u32));
1380 data1 = iwl_read_targ_mem(priv, base + 7 * sizeof(u32));
1381 data2 = iwl_read_targ_mem(priv, base + 8 * sizeof(u32));
1382 line = iwl_read_targ_mem(priv, base + 9 * sizeof(u32));
1383 time = iwl_read_targ_mem(priv, base + 11 * sizeof(u32));
1385 IWL_ERR(priv, "Desc Time "
1386 "data1 data2 line\n");
1387 IWL_ERR(priv, "%-28s (#%02d) %010u 0x%08X 0x%08X %u\n",
1388 desc_lookup(desc), desc, time, data1, data2, line);
1389 IWL_ERR(priv, "blink1 blink2 ilink1 ilink2\n");
1390 IWL_ERR(priv, "0x%05X 0x%05X 0x%05X 0x%05X\n", blink1, blink2,
1395 #define EVENT_START_OFFSET (4 * sizeof(u32))
1398 * iwl_print_event_log - Dump error event log to syslog
1401 static void iwl_print_event_log(struct iwl_priv *priv, u32 start_idx,
1402 u32 num_events, u32 mode)
1405 u32 base; /* SRAM byte address of event log header */
1406 u32 event_size; /* 2 u32s, or 3 u32s if timestamp recorded */
1407 u32 ptr; /* SRAM byte address of log data */
1408 u32 ev, time, data; /* event log data */
1410 if (num_events == 0)
1412 switch (priv->ucode_type) {
1414 base = le32_to_cpu(priv->card_alive.log_event_table_ptr);
1417 base = le32_to_cpu(priv->card_alive_init.log_event_table_ptr);
1420 IWL_ERR(priv, "uCode image not available\n");
1425 event_size = 2 * sizeof(u32);
1427 event_size = 3 * sizeof(u32);
1429 ptr = base + EVENT_START_OFFSET + (start_idx * event_size);
1431 /* "time" is actually "data" for mode 0 (no timestamp).
1432 * place event id # at far right for easier visual parsing. */
1433 for (i = 0; i < num_events; i++) {
1434 ev = iwl_read_targ_mem(priv, ptr);
1436 time = iwl_read_targ_mem(priv, ptr);
1440 IWL_ERR(priv, "EVT_LOG:0x%08x:%04u\n", time, ev);
1442 data = iwl_read_targ_mem(priv, ptr);
1444 IWL_ERR(priv, "EVT_LOGT:%010u:0x%08x:%04u\n",
1450 void iwl_dump_nic_event_log(struct iwl_priv *priv)
1452 u32 base; /* SRAM byte address of event log header */
1453 u32 capacity; /* event log capacity in # entries */
1454 u32 mode; /* 0 - no timestamp, 1 - timestamp recorded */
1455 u32 num_wraps; /* # times uCode wrapped to top of log */
1456 u32 next_entry; /* index of next entry to be written by uCode */
1457 u32 size; /* # entries that we'll print */
1459 switch (priv->ucode_type) {
1461 base = le32_to_cpu(priv->card_alive.log_event_table_ptr);
1464 base = le32_to_cpu(priv->card_alive_init.log_event_table_ptr);
1467 IWL_ERR(priv, "uCode image not available\n");
1471 if (!priv->cfg->ops->lib->is_valid_rtc_data_addr(base)) {
1472 IWL_ERR(priv, "Invalid event log pointer 0x%08X\n", base);
1476 /* event log header */
1477 capacity = iwl_read_targ_mem(priv, base);
1478 mode = iwl_read_targ_mem(priv, base + (1 * sizeof(u32)));
1479 num_wraps = iwl_read_targ_mem(priv, base + (2 * sizeof(u32)));
1480 next_entry = iwl_read_targ_mem(priv, base + (3 * sizeof(u32)));
1482 size = num_wraps ? capacity : next_entry;
1484 /* bail out if nothing in log */
1486 IWL_ERR(priv, "Start IWL Event Log Dump: nothing in log\n");
1490 IWL_ERR(priv, "Start IWL Event Log Dump: display count %d, wraps %d\n",
1493 /* if uCode has wrapped back to top of log, start at the oldest entry,
1494 * i.e the next one that uCode would fill. */
1496 iwl_print_event_log(priv, next_entry,
1497 capacity - next_entry, mode);
1498 /* (then/else) start at top of log */
1499 iwl_print_event_log(priv, 0, next_entry, mode);
1504 * iwl_irq_handle_error - called for HW or SW error interrupt from card
1506 void iwl_irq_handle_error(struct iwl_priv *priv)
1508 /* Set the FW error flag -- cleared on iwl_down */
1509 set_bit(STATUS_FW_ERROR, &priv->status);
1511 /* Cancel currently queued command. */
1512 clear_bit(STATUS_HCMD_ACTIVE, &priv->status);
1514 #ifdef CONFIG_IWLWIFI_DEBUG
1515 if (iwl_debug_level & IWL_DL_FW_ERRORS) {
1516 iwl_dump_nic_error_log(priv);
1517 iwl_dump_nic_event_log(priv);
1518 iwl_print_rx_config_cmd(priv);
1522 wake_up_interruptible(&priv->wait_command_queue);
1524 /* Keep the restart process from trying to send host
1525 * commands by clearing the INIT status bit */
1526 clear_bit(STATUS_READY, &priv->status);
1528 if (!test_bit(STATUS_EXIT_PENDING, &priv->status)) {
1529 IWL_DEBUG(priv, IWL_DL_FW_ERRORS,
1530 "Restarting adapter due to uCode error.\n");
1532 if (priv->cfg->mod_params->restart_fw)
1533 queue_work(priv->workqueue, &priv->restart);
1536 EXPORT_SYMBOL(iwl_irq_handle_error);
1538 void iwl_configure_filter(struct ieee80211_hw *hw,
1539 unsigned int changed_flags,
1540 unsigned int *total_flags,
1541 int mc_count, struct dev_addr_list *mc_list)
1543 struct iwl_priv *priv = hw->priv;
1544 __le32 *filter_flags = &priv->staging_rxon.filter_flags;
1546 IWL_DEBUG_MAC80211(priv, "Enter: changed: 0x%x, total: 0x%x\n",
1547 changed_flags, *total_flags);
1549 if (changed_flags & (FIF_OTHER_BSS | FIF_PROMISC_IN_BSS)) {
1550 if (*total_flags & (FIF_OTHER_BSS | FIF_PROMISC_IN_BSS))
1551 *filter_flags |= RXON_FILTER_PROMISC_MSK;
1553 *filter_flags &= ~RXON_FILTER_PROMISC_MSK;
1555 if (changed_flags & FIF_ALLMULTI) {
1556 if (*total_flags & FIF_ALLMULTI)
1557 *filter_flags |= RXON_FILTER_ACCEPT_GRP_MSK;
1559 *filter_flags &= ~RXON_FILTER_ACCEPT_GRP_MSK;
1561 if (changed_flags & FIF_CONTROL) {
1562 if (*total_flags & FIF_CONTROL)
1563 *filter_flags |= RXON_FILTER_CTL2HOST_MSK;
1565 *filter_flags &= ~RXON_FILTER_CTL2HOST_MSK;
1567 if (changed_flags & FIF_BCN_PRBRESP_PROMISC) {
1568 if (*total_flags & FIF_BCN_PRBRESP_PROMISC)
1569 *filter_flags |= RXON_FILTER_BCON_AWARE_MSK;
1571 *filter_flags &= ~RXON_FILTER_BCON_AWARE_MSK;
1574 /* We avoid iwl_commit_rxon here to commit the new filter flags
1575 * since mac80211 will call ieee80211_hw_config immediately.
1576 * (mc_list is not supported at this time). Otherwise, we need to
1577 * queue a background iwl_commit_rxon work.
1580 *total_flags &= FIF_OTHER_BSS | FIF_ALLMULTI | FIF_PROMISC_IN_BSS |
1581 FIF_BCN_PRBRESP_PROMISC | FIF_CONTROL;
1583 EXPORT_SYMBOL(iwl_configure_filter);
1585 int iwl_setup_mac(struct iwl_priv *priv)
1588 struct ieee80211_hw *hw = priv->hw;
1589 hw->rate_control_algorithm = "iwl-agn-rs";
1591 /* Tell mac80211 our characteristics */
1592 hw->flags = IEEE80211_HW_SIGNAL_DBM |
1593 IEEE80211_HW_NOISE_DBM |
1594 IEEE80211_HW_AMPDU_AGGREGATION |
1595 IEEE80211_HW_SPECTRUM_MGMT |
1596 IEEE80211_HW_SUPPORTS_PS;
1597 hw->wiphy->interface_modes =
1598 BIT(NL80211_IFTYPE_STATION) |
1599 BIT(NL80211_IFTYPE_ADHOC);
1601 hw->wiphy->custom_regulatory = true;
1603 hw->wiphy->max_scan_ssids = PROBE_OPTION_MAX;
1604 /* we create the 802.11 header and a zero-length SSID element */
1605 hw->wiphy->max_scan_ie_len = IWL_MAX_PROBE_REQUEST - 24 - 2;
1607 /* Default value; 4 EDCA QOS priorities */
1610 hw->max_listen_interval = IWL_CONN_MAX_LISTEN_INTERVAL;
1612 if (priv->bands[IEEE80211_BAND_2GHZ].n_channels)
1613 priv->hw->wiphy->bands[IEEE80211_BAND_2GHZ] =
1614 &priv->bands[IEEE80211_BAND_2GHZ];
1615 if (priv->bands[IEEE80211_BAND_5GHZ].n_channels)
1616 priv->hw->wiphy->bands[IEEE80211_BAND_5GHZ] =
1617 &priv->bands[IEEE80211_BAND_5GHZ];
1619 ret = ieee80211_register_hw(priv->hw);
1621 IWL_ERR(priv, "Failed to register hw (error %d)\n", ret);
1624 priv->mac80211_registered = 1;
1628 EXPORT_SYMBOL(iwl_setup_mac);
1630 int iwl_set_hw_params(struct iwl_priv *priv)
1632 priv->hw_params.max_rxq_size = RX_QUEUE_SIZE;
1633 priv->hw_params.max_rxq_log = RX_QUEUE_SIZE_LOG;
1634 if (priv->cfg->mod_params->amsdu_size_8K)
1635 priv->hw_params.rx_buf_size = IWL_RX_BUF_SIZE_8K;
1637 priv->hw_params.rx_buf_size = IWL_RX_BUF_SIZE_4K;
1638 priv->hw_params.max_pkt_size = priv->hw_params.rx_buf_size - 256;
1640 priv->hw_params.max_beacon_itrvl = IWL_MAX_UCODE_BEACON_INTERVAL;
1642 if (priv->cfg->mod_params->disable_11n)
1643 priv->cfg->sku &= ~IWL_SKU_N;
1645 /* Device-specific setup */
1646 return priv->cfg->ops->lib->set_hw_params(priv);
1648 EXPORT_SYMBOL(iwl_set_hw_params);
1650 int iwl_init_drv(struct iwl_priv *priv)
1654 priv->ibss_beacon = NULL;
1656 spin_lock_init(&priv->lock);
1657 spin_lock_init(&priv->sta_lock);
1658 spin_lock_init(&priv->hcmd_lock);
1660 INIT_LIST_HEAD(&priv->free_frames);
1662 mutex_init(&priv->mutex);
1664 /* Clear the driver's (not device's) station table */
1665 iwl_clear_stations_table(priv);
1667 priv->data_retry_limit = -1;
1668 priv->ieee_channels = NULL;
1669 priv->ieee_rates = NULL;
1670 priv->band = IEEE80211_BAND_2GHZ;
1672 priv->iw_mode = NL80211_IFTYPE_STATION;
1674 priv->current_ht_config.sm_ps = WLAN_HT_CAP_SM_PS_DISABLED;
1676 /* Choose which receivers/antennas to use */
1677 if (priv->cfg->ops->hcmd->set_rxon_chain)
1678 priv->cfg->ops->hcmd->set_rxon_chain(priv);
1680 iwl_init_scan_params(priv);
1682 iwl_reset_qos(priv);
1684 priv->qos_data.qos_active = 0;
1685 priv->qos_data.qos_cap.val = 0;
1687 priv->rates_mask = IWL_RATES_MASK;
1688 /* If power management is turned on, default to CAM mode */
1689 priv->power_mode = IWL_POWER_MODE_CAM;
1690 priv->tx_power_user_lmt = IWL_TX_POWER_TARGET_POWER_MAX;
1692 ret = iwl_init_channel_map(priv);
1694 IWL_ERR(priv, "initializing regulatory failed: %d\n", ret);
1698 ret = iwlcore_init_geos(priv);
1700 IWL_ERR(priv, "initializing geos failed: %d\n", ret);
1701 goto err_free_channel_map;
1703 iwlcore_init_hw_rates(priv, priv->ieee_rates);
1707 err_free_channel_map:
1708 iwl_free_channel_map(priv);
1712 EXPORT_SYMBOL(iwl_init_drv);
1714 int iwl_set_tx_power(struct iwl_priv *priv, s8 tx_power, bool force)
1717 if (tx_power < IWL_TX_POWER_TARGET_POWER_MIN) {
1718 IWL_WARN(priv, "Requested user TXPOWER %d below lower limit %d.\n",
1720 IWL_TX_POWER_TARGET_POWER_MIN);
1724 if (tx_power > IWL_TX_POWER_TARGET_POWER_MAX) {
1725 IWL_WARN(priv, "Requested user TXPOWER %d above upper limit %d.\n",
1727 IWL_TX_POWER_TARGET_POWER_MAX);
1731 if (priv->tx_power_user_lmt != tx_power)
1734 priv->tx_power_user_lmt = tx_power;
1736 /* if nic is not up don't send command */
1737 if (!iwl_is_ready_rf(priv))
1740 if (force && priv->cfg->ops->lib->send_tx_power)
1741 ret = priv->cfg->ops->lib->send_tx_power(priv);
1745 EXPORT_SYMBOL(iwl_set_tx_power);
1747 void iwl_uninit_drv(struct iwl_priv *priv)
1749 iwl_calib_free_results(priv);
1750 iwlcore_free_geos(priv);
1751 iwl_free_channel_map(priv);
1754 EXPORT_SYMBOL(iwl_uninit_drv);
1756 #define ICT_COUNT (PAGE_SIZE/sizeof(u32))
1758 /* Free dram table */
1759 void iwl_free_isr_ict(struct iwl_priv *priv)
1761 if (priv->ict_tbl_vir) {
1762 pci_free_consistent(priv->pci_dev, (sizeof(u32) * ICT_COUNT) +
1763 PAGE_SIZE, priv->ict_tbl_vir,
1765 priv->ict_tbl_vir = NULL;
1768 EXPORT_SYMBOL(iwl_free_isr_ict);
1771 /* allocate dram shared table it is a PAGE_SIZE aligned
1772 * also reset all data related to ICT table interrupt.
1774 int iwl_alloc_isr_ict(struct iwl_priv *priv)
1777 if (priv->cfg->use_isr_legacy)
1779 /* allocate shrared data table */
1780 priv->ict_tbl_vir = pci_alloc_consistent(priv->pci_dev, (sizeof(u32) *
1781 ICT_COUNT) + PAGE_SIZE,
1782 &priv->ict_tbl_dma);
1783 if (!priv->ict_tbl_vir)
1786 /* align table to PAGE_SIZE boundry */
1787 priv->aligned_ict_tbl_dma = ALIGN(priv->ict_tbl_dma, PAGE_SIZE);
1789 IWL_DEBUG_ISR(priv, "ict dma addr %Lx dma aligned %Lx diff %d\n",
1790 (unsigned long long)priv->ict_tbl_dma,
1791 (unsigned long long)priv->aligned_ict_tbl_dma,
1792 (int)(priv->aligned_ict_tbl_dma - priv->ict_tbl_dma));
1794 priv->ict_tbl = priv->ict_tbl_vir +
1795 (priv->aligned_ict_tbl_dma - priv->ict_tbl_dma);
1797 IWL_DEBUG_ISR(priv, "ict vir addr %p vir aligned %p diff %d\n",
1798 priv->ict_tbl, priv->ict_tbl_vir,
1799 (int)(priv->aligned_ict_tbl_dma - priv->ict_tbl_dma));
1801 /* reset table and index to all 0 */
1802 memset(priv->ict_tbl_vir,0, (sizeof(u32) * ICT_COUNT) + PAGE_SIZE);
1803 priv->ict_index = 0;
1805 /* add periodic RX interrupt */
1806 priv->inta_mask |= CSR_INT_BIT_RX_PERIODIC;
1809 EXPORT_SYMBOL(iwl_alloc_isr_ict);
1811 /* Device is going up inform it about using ICT interrupt table,
1812 * also we need to tell the driver to start using ICT interrupt.
1814 int iwl_reset_ict(struct iwl_priv *priv)
1817 unsigned long flags;
1819 if (!priv->ict_tbl_vir)
1822 spin_lock_irqsave(&priv->lock, flags);
1823 iwl_disable_interrupts(priv);
1825 memset(&priv->ict_tbl[0],0, sizeof(u32) * ICT_COUNT);
1827 val = priv->aligned_ict_tbl_dma >> PAGE_SHIFT;
1829 val |= CSR_DRAM_INT_TBL_ENABLE;
1830 val |= CSR_DRAM_INIT_TBL_WRAP_CHECK;
1832 IWL_DEBUG_ISR(priv, "CSR_DRAM_INT_TBL_REG =0x%X "
1833 "aligned dma address %Lx\n",
1834 val, (unsigned long long)priv->aligned_ict_tbl_dma);
1836 iwl_write32(priv, CSR_DRAM_INT_TBL_REG, val);
1837 priv->use_ict = true;
1838 priv->ict_index = 0;
1839 iwl_write32(priv, CSR_INT, priv->inta_mask);
1840 iwl_enable_interrupts(priv);
1841 spin_unlock_irqrestore(&priv->lock, flags);
1845 EXPORT_SYMBOL(iwl_reset_ict);
1847 /* Device is going down disable ict interrupt usage */
1848 void iwl_disable_ict(struct iwl_priv *priv)
1850 unsigned long flags;
1852 spin_lock_irqsave(&priv->lock, flags);
1853 priv->use_ict = false;
1854 spin_unlock_irqrestore(&priv->lock, flags);
1856 EXPORT_SYMBOL(iwl_disable_ict);
1858 /* interrupt handler using ict table, with this interrupt driver will
1859 * stop using INTA register to get device's interrupt, reading this register
1860 * is expensive, device will write interrupts in ICT dram table, increment
1861 * index then will fire interrupt to driver, driver will OR all ICT table
1862 * entries from current index up to table entry with 0 value. the result is
1863 * the interrupt we need to service, driver will set the entries back to 0 and
1866 irqreturn_t iwl_isr_ict(int irq, void *data)
1868 struct iwl_priv *priv = data;
1869 u32 inta, inta_mask;
1875 /* dram interrupt table not set yet,
1876 * use legacy interrupt.
1879 return iwl_isr(irq, data);
1881 spin_lock(&priv->lock);
1883 /* Disable (but don't clear!) interrupts here to avoid
1884 * back-to-back ISRs and sporadic interrupts from our NIC.
1885 * If we have something to service, the tasklet will re-enable ints.
1886 * If we *don't* have something, we'll re-enable before leaving here.
1888 inta_mask = iwl_read32(priv, CSR_INT_MASK); /* just for debug */
1889 iwl_write32(priv, CSR_INT_MASK, 0x00000000);
1892 /* Ignore interrupt if there's nothing in NIC to service.
1893 * This may be due to IRQ shared with another device,
1894 * or due to sporadic interrupts thrown from our NIC. */
1895 if (!priv->ict_tbl[priv->ict_index]) {
1896 IWL_DEBUG_ISR(priv, "Ignore interrupt, inta == 0\n");
1900 /* read all entries that not 0 start with ict_index */
1901 while (priv->ict_tbl[priv->ict_index]) {
1903 val |= priv->ict_tbl[priv->ict_index];
1904 IWL_DEBUG_ISR(priv, "ICT index %d value 0x%08X\n",
1906 priv->ict_tbl[priv->ict_index]);
1907 priv->ict_tbl[priv->ict_index] = 0;
1908 priv->ict_index = iwl_queue_inc_wrap(priv->ict_index,
1913 /* We should not get this value, just ignore it. */
1914 if (val == 0xffffffff)
1917 inta = (0xff & val) | ((0xff00 & val) << 16);
1918 IWL_DEBUG_ISR(priv, "ISR inta 0x%08x, enabled 0x%08x ict 0x%08x\n",
1919 inta, inta_mask, val);
1921 inta &= priv->inta_mask;
1924 /* iwl_irq_tasklet() will service interrupts and re-enable them */
1926 tasklet_schedule(&priv->irq_tasklet);
1927 else if (test_bit(STATUS_INT_ENABLED, &priv->status) && !priv->inta) {
1928 /* Allow interrupt if was disabled by this handler and
1929 * no tasklet was schedules, We should not enable interrupt,
1930 * tasklet will enable it.
1932 iwl_enable_interrupts(priv);
1935 spin_unlock(&priv->lock);
1939 /* re-enable interrupts here since we don't have anything to service.
1940 * only Re-enable if disabled by irq.
1942 if (test_bit(STATUS_INT_ENABLED, &priv->status) && !priv->inta)
1943 iwl_enable_interrupts(priv);
1945 spin_unlock(&priv->lock);
1948 EXPORT_SYMBOL(iwl_isr_ict);
1951 static irqreturn_t iwl_isr(int irq, void *data)
1953 struct iwl_priv *priv = data;
1954 u32 inta, inta_mask;
1955 #ifdef CONFIG_IWLWIFI_DEBUG
1961 spin_lock(&priv->lock);
1963 /* Disable (but don't clear!) interrupts here to avoid
1964 * back-to-back ISRs and sporadic interrupts from our NIC.
1965 * If we have something to service, the tasklet will re-enable ints.
1966 * If we *don't* have something, we'll re-enable before leaving here. */
1967 inta_mask = iwl_read32(priv, CSR_INT_MASK); /* just for debug */
1968 iwl_write32(priv, CSR_INT_MASK, 0x00000000);
1970 /* Discover which interrupts are active/pending */
1971 inta = iwl_read32(priv, CSR_INT);
1973 /* Ignore interrupt if there's nothing in NIC to service.
1974 * This may be due to IRQ shared with another device,
1975 * or due to sporadic interrupts thrown from our NIC. */
1977 IWL_DEBUG_ISR(priv, "Ignore interrupt, inta == 0\n");
1981 if ((inta == 0xFFFFFFFF) || ((inta & 0xFFFFFFF0) == 0xa5a5a5a0)) {
1982 /* Hardware disappeared. It might have already raised
1984 IWL_WARN(priv, "HARDWARE GONE?? INTA == 0x%08x\n", inta);
1988 #ifdef CONFIG_IWLWIFI_DEBUG
1989 if (iwl_debug_level & (IWL_DL_ISR)) {
1990 inta_fh = iwl_read32(priv, CSR_FH_INT_STATUS);
1991 IWL_DEBUG_ISR(priv, "ISR inta 0x%08x, enabled 0x%08x, "
1992 "fh 0x%08x\n", inta, inta_mask, inta_fh);
1997 /* iwl_irq_tasklet() will service interrupts and re-enable them */
1999 tasklet_schedule(&priv->irq_tasklet);
2000 else if (test_bit(STATUS_INT_ENABLED, &priv->status) && !priv->inta)
2001 iwl_enable_interrupts(priv);
2004 spin_unlock(&priv->lock);
2008 /* re-enable interrupts here since we don't have anything to service. */
2009 /* only Re-enable if diabled by irq and no schedules tasklet. */
2010 if (test_bit(STATUS_INT_ENABLED, &priv->status) && !priv->inta)
2011 iwl_enable_interrupts(priv);
2013 spin_unlock(&priv->lock);
2017 irqreturn_t iwl_isr_legacy(int irq, void *data)
2019 struct iwl_priv *priv = data;
2020 u32 inta, inta_mask;
2025 spin_lock(&priv->lock);
2027 /* Disable (but don't clear!) interrupts here to avoid
2028 * back-to-back ISRs and sporadic interrupts from our NIC.
2029 * If we have something to service, the tasklet will re-enable ints.
2030 * If we *don't* have something, we'll re-enable before leaving here. */
2031 inta_mask = iwl_read32(priv, CSR_INT_MASK); /* just for debug */
2032 iwl_write32(priv, CSR_INT_MASK, 0x00000000);
2034 /* Discover which interrupts are active/pending */
2035 inta = iwl_read32(priv, CSR_INT);
2036 inta_fh = iwl_read32(priv, CSR_FH_INT_STATUS);
2038 /* Ignore interrupt if there's nothing in NIC to service.
2039 * This may be due to IRQ shared with another device,
2040 * or due to sporadic interrupts thrown from our NIC. */
2041 if (!inta && !inta_fh) {
2042 IWL_DEBUG_ISR(priv, "Ignore interrupt, inta == 0, inta_fh == 0\n");
2046 if ((inta == 0xFFFFFFFF) || ((inta & 0xFFFFFFF0) == 0xa5a5a5a0)) {
2047 /* Hardware disappeared. It might have already raised
2049 IWL_WARN(priv, "HARDWARE GONE?? INTA == 0x%08x\n", inta);
2053 IWL_DEBUG_ISR(priv, "ISR inta 0x%08x, enabled 0x%08x, fh 0x%08x\n",
2054 inta, inta_mask, inta_fh);
2056 inta &= ~CSR_INT_BIT_SCD;
2058 /* iwl_irq_tasklet() will service interrupts and re-enable them */
2059 if (likely(inta || inta_fh))
2060 tasklet_schedule(&priv->irq_tasklet);
2063 spin_unlock(&priv->lock);
2067 /* re-enable interrupts here since we don't have anything to service. */
2068 /* only Re-enable if diabled by irq */
2069 if (test_bit(STATUS_INT_ENABLED, &priv->status))
2070 iwl_enable_interrupts(priv);
2071 spin_unlock(&priv->lock);
2074 EXPORT_SYMBOL(iwl_isr_legacy);
2076 int iwl_send_bt_config(struct iwl_priv *priv)
2078 struct iwl_bt_cmd bt_cmd = {
2086 return iwl_send_cmd_pdu(priv, REPLY_BT_CONFIG,
2087 sizeof(struct iwl_bt_cmd), &bt_cmd);
2089 EXPORT_SYMBOL(iwl_send_bt_config);
2091 int iwl_send_statistics_request(struct iwl_priv *priv, u8 flags)
2094 struct iwl_host_cmd cmd = {
2095 .id = REPLY_STATISTICS_CMD,
2097 .len = sizeof(stat_flags),
2098 .data = (u8 *) &stat_flags,
2100 return iwl_send_cmd(priv, &cmd);
2102 EXPORT_SYMBOL(iwl_send_statistics_request);
2105 * iwl_verify_inst_sparse - verify runtime uCode image in card vs. host,
2106 * using sample data 100 bytes apart. If these sample points are good,
2107 * it's a pretty good bet that everything between them is good, too.
2109 static int iwlcore_verify_inst_sparse(struct iwl_priv *priv, __le32 *image, u32 len)
2116 IWL_DEBUG_INFO(priv, "ucode inst image size is %u\n", len);
2118 for (i = 0; i < len; i += 100, image += 100/sizeof(u32)) {
2119 /* read data comes through single port, auto-incr addr */
2120 /* NOTE: Use the debugless read so we don't flood kernel log
2121 * if IWL_DL_IO is set */
2122 iwl_write_direct32(priv, HBUS_TARG_MEM_RADDR,
2123 i + IWL49_RTC_INST_LOWER_BOUND);
2124 val = _iwl_read_direct32(priv, HBUS_TARG_MEM_RDAT);
2125 if (val != le32_to_cpu(*image)) {
2137 * iwlcore_verify_inst_full - verify runtime uCode image in card vs. host,
2138 * looking at all data.
2140 static int iwl_verify_inst_full(struct iwl_priv *priv, __le32 *image,
2148 IWL_DEBUG_INFO(priv, "ucode inst image size is %u\n", len);
2150 iwl_write_direct32(priv, HBUS_TARG_MEM_RADDR,
2151 IWL49_RTC_INST_LOWER_BOUND);
2154 for (; len > 0; len -= sizeof(u32), image++) {
2155 /* read data comes through single port, auto-incr addr */
2156 /* NOTE: Use the debugless read so we don't flood kernel log
2157 * if IWL_DL_IO is set */
2158 val = _iwl_read_direct32(priv, HBUS_TARG_MEM_RDAT);
2159 if (val != le32_to_cpu(*image)) {
2160 IWL_ERR(priv, "uCode INST section is invalid at "
2161 "offset 0x%x, is 0x%x, s/b 0x%x\n",
2162 save_len - len, val, le32_to_cpu(*image));
2171 IWL_DEBUG_INFO(priv,
2172 "ucode image in INSTRUCTION memory is good\n");
2178 * iwl_verify_ucode - determine which instruction image is in SRAM,
2179 * and verify its contents
2181 int iwl_verify_ucode(struct iwl_priv *priv)
2188 image = (__le32 *)priv->ucode_boot.v_addr;
2189 len = priv->ucode_boot.len;
2190 ret = iwlcore_verify_inst_sparse(priv, image, len);
2192 IWL_DEBUG_INFO(priv, "Bootstrap uCode is good in inst SRAM\n");
2196 /* Try initialize */
2197 image = (__le32 *)priv->ucode_init.v_addr;
2198 len = priv->ucode_init.len;
2199 ret = iwlcore_verify_inst_sparse(priv, image, len);
2201 IWL_DEBUG_INFO(priv, "Initialize uCode is good in inst SRAM\n");
2205 /* Try runtime/protocol */
2206 image = (__le32 *)priv->ucode_code.v_addr;
2207 len = priv->ucode_code.len;
2208 ret = iwlcore_verify_inst_sparse(priv, image, len);
2210 IWL_DEBUG_INFO(priv, "Runtime uCode is good in inst SRAM\n");
2214 IWL_ERR(priv, "NO VALID UCODE IMAGE IN INSTRUCTION SRAM!!\n");
2216 /* Since nothing seems to match, show first several data entries in
2217 * instruction SRAM, so maybe visual inspection will give a clue.
2218 * Selection of bootstrap image (vs. other images) is arbitrary. */
2219 image = (__le32 *)priv->ucode_boot.v_addr;
2220 len = priv->ucode_boot.len;
2221 ret = iwl_verify_inst_full(priv, image, len);
2225 EXPORT_SYMBOL(iwl_verify_ucode);
2228 void iwl_rf_kill_ct_config(struct iwl_priv *priv)
2230 struct iwl_ct_kill_config cmd;
2231 struct iwl_ct_kill_throttling_config adv_cmd;
2232 unsigned long flags;
2235 spin_lock_irqsave(&priv->lock, flags);
2236 iwl_write32(priv, CSR_UCODE_DRV_GP1_CLR,
2237 CSR_UCODE_DRV_GP1_REG_BIT_CT_KILL_EXIT);
2238 spin_unlock_irqrestore(&priv->lock, flags);
2239 priv->power_data.ct_kill_toggle = false;
2241 switch (priv->hw_rev & CSR_HW_REV_TYPE_MSK) {
2242 case CSR_HW_REV_TYPE_1000:
2243 case CSR_HW_REV_TYPE_6x00:
2244 case CSR_HW_REV_TYPE_6x50:
2245 adv_cmd.critical_temperature_enter =
2246 cpu_to_le32(priv->hw_params.ct_kill_threshold);
2247 adv_cmd.critical_temperature_exit =
2248 cpu_to_le32(priv->hw_params.ct_kill_exit_threshold);
2250 ret = iwl_send_cmd_pdu(priv, REPLY_CT_KILL_CONFIG_CMD,
2251 sizeof(adv_cmd), &adv_cmd);
2254 cmd.critical_temperature_R =
2255 cpu_to_le32(priv->hw_params.ct_kill_threshold);
2257 ret = iwl_send_cmd_pdu(priv, REPLY_CT_KILL_CONFIG_CMD,
2261 ret = iwl_send_cmd_pdu(priv, REPLY_CT_KILL_CONFIG_CMD,
2264 IWL_ERR(priv, "REPLY_CT_KILL_CONFIG_CMD failed\n");
2266 IWL_DEBUG_INFO(priv, "REPLY_CT_KILL_CONFIG_CMD succeeded, "
2267 "critical temperature is %d\n",
2268 cmd.critical_temperature_R);
2270 EXPORT_SYMBOL(iwl_rf_kill_ct_config);
2276 * Use: Sets the device's internal card state to enable, disable, or halt
2278 * When in the 'enable' state the card operates as normal.
2279 * When in the 'disable' state, the card enters into a low power mode.
2280 * When in the 'halt' state, the card is shut down and must be fully
2281 * restarted to come back on.
2283 int iwl_send_card_state(struct iwl_priv *priv, u32 flags, u8 meta_flag)
2285 struct iwl_host_cmd cmd = {
2286 .id = REPLY_CARD_STATE_CMD,
2292 return iwl_send_cmd(priv, &cmd);
2294 EXPORT_SYMBOL(iwl_send_card_state);
2296 void iwl_rx_pm_sleep_notif(struct iwl_priv *priv,
2297 struct iwl_rx_mem_buffer *rxb)
2299 #ifdef CONFIG_IWLWIFI_DEBUG
2300 struct iwl_rx_packet *pkt = (struct iwl_rx_packet *)rxb->skb->data;
2301 struct iwl_sleep_notification *sleep = &(pkt->u.sleep_notif);
2302 IWL_DEBUG_RX(priv, "sleep mode: %d, src: %d\n",
2303 sleep->pm_sleep_mode, sleep->pm_wakeup_src);
2306 EXPORT_SYMBOL(iwl_rx_pm_sleep_notif);
2308 void iwl_rx_pm_debug_statistics_notif(struct iwl_priv *priv,
2309 struct iwl_rx_mem_buffer *rxb)
2311 struct iwl_rx_packet *pkt = (struct iwl_rx_packet *)rxb->skb->data;
2312 IWL_DEBUG_RADIO(priv, "Dumping %d bytes of unhandled "
2313 "notification for %s:\n",
2314 le32_to_cpu(pkt->len), get_cmd_string(pkt->hdr.cmd));
2315 iwl_print_hex_dump(IWL_DL_RADIO, pkt->u.raw, le32_to_cpu(pkt->len));
2317 EXPORT_SYMBOL(iwl_rx_pm_debug_statistics_notif);
2319 void iwl_rx_reply_error(struct iwl_priv *priv,
2320 struct iwl_rx_mem_buffer *rxb)
2322 struct iwl_rx_packet *pkt = (struct iwl_rx_packet *)rxb->skb->data;
2324 IWL_ERR(priv, "Error Reply type 0x%08X cmd %s (0x%02X) "
2325 "seq 0x%04X ser 0x%08X\n",
2326 le32_to_cpu(pkt->u.err_resp.error_type),
2327 get_cmd_string(pkt->u.err_resp.cmd_id),
2328 pkt->u.err_resp.cmd_id,
2329 le16_to_cpu(pkt->u.err_resp.bad_cmd_seq_num),
2330 le32_to_cpu(pkt->u.err_resp.error_info));
2332 EXPORT_SYMBOL(iwl_rx_reply_error);
2334 void iwl_clear_isr_stats(struct iwl_priv *priv)
2336 memset(&priv->isr_stats, 0, sizeof(priv->isr_stats));
2338 EXPORT_SYMBOL(iwl_clear_isr_stats);
2340 int iwl_mac_conf_tx(struct ieee80211_hw *hw, u16 queue,
2341 const struct ieee80211_tx_queue_params *params)
2343 struct iwl_priv *priv = hw->priv;
2344 unsigned long flags;
2347 IWL_DEBUG_MAC80211(priv, "enter\n");
2349 if (!iwl_is_ready_rf(priv)) {
2350 IWL_DEBUG_MAC80211(priv, "leave - RF not ready\n");
2354 if (queue >= AC_NUM) {
2355 IWL_DEBUG_MAC80211(priv, "leave - queue >= AC_NUM %d\n", queue);
2359 q = AC_NUM - 1 - queue;
2361 spin_lock_irqsave(&priv->lock, flags);
2363 priv->qos_data.def_qos_parm.ac[q].cw_min = cpu_to_le16(params->cw_min);
2364 priv->qos_data.def_qos_parm.ac[q].cw_max = cpu_to_le16(params->cw_max);
2365 priv->qos_data.def_qos_parm.ac[q].aifsn = params->aifs;
2366 priv->qos_data.def_qos_parm.ac[q].edca_txop =
2367 cpu_to_le16((params->txop * 32));
2369 priv->qos_data.def_qos_parm.ac[q].reserved1 = 0;
2370 priv->qos_data.qos_active = 1;
2372 if (priv->iw_mode == NL80211_IFTYPE_AP)
2373 iwl_activate_qos(priv, 1);
2374 else if (priv->assoc_id && iwl_is_associated(priv))
2375 iwl_activate_qos(priv, 0);
2377 spin_unlock_irqrestore(&priv->lock, flags);
2379 IWL_DEBUG_MAC80211(priv, "leave\n");
2382 EXPORT_SYMBOL(iwl_mac_conf_tx);
2384 static void iwl_ht_conf(struct iwl_priv *priv,
2385 struct ieee80211_bss_conf *bss_conf)
2387 struct ieee80211_sta_ht_cap *ht_conf;
2388 struct iwl_ht_info *iwl_conf = &priv->current_ht_config;
2389 struct ieee80211_sta *sta;
2391 IWL_DEBUG_MAC80211(priv, "enter: \n");
2393 if (!iwl_conf->is_ht)
2398 * It is totally wrong to base global information on something
2399 * that is valid only when associated, alas, this driver works
2400 * that way and I don't know how to fix it.
2404 sta = ieee80211_find_sta(priv->hw, priv->bssid);
2409 ht_conf = &sta->ht_cap;
2411 if (ht_conf->cap & IEEE80211_HT_CAP_SGI_20)
2412 iwl_conf->sgf |= HT_SHORT_GI_20MHZ;
2413 if (ht_conf->cap & IEEE80211_HT_CAP_SGI_40)
2414 iwl_conf->sgf |= HT_SHORT_GI_40MHZ;
2416 iwl_conf->is_green_field = !!(ht_conf->cap & IEEE80211_HT_CAP_GRN_FLD);
2417 iwl_conf->max_amsdu_size =
2418 !!(ht_conf->cap & IEEE80211_HT_CAP_MAX_AMSDU);
2420 iwl_conf->supported_chan_width =
2421 !!(ht_conf->cap & IEEE80211_HT_CAP_SUP_WIDTH_20_40);
2424 * XXX: The HT configuration needs to be moved into iwl_mac_config()
2425 * to be done there correctly.
2428 iwl_conf->extension_chan_offset = IEEE80211_HT_PARAM_CHA_SEC_NONE;
2429 if (conf_is_ht40_minus(&priv->hw->conf))
2430 iwl_conf->extension_chan_offset = IEEE80211_HT_PARAM_CHA_SEC_BELOW;
2431 else if (conf_is_ht40_plus(&priv->hw->conf))
2432 iwl_conf->extension_chan_offset = IEEE80211_HT_PARAM_CHA_SEC_ABOVE;
2434 /* If no above or below channel supplied disable FAT channel */
2435 if (iwl_conf->extension_chan_offset != IEEE80211_HT_PARAM_CHA_SEC_ABOVE &&
2436 iwl_conf->extension_chan_offset != IEEE80211_HT_PARAM_CHA_SEC_BELOW)
2437 iwl_conf->supported_chan_width = 0;
2439 iwl_conf->sm_ps = (u8)((ht_conf->cap & IEEE80211_HT_CAP_SM_PS) >> 2);
2441 memcpy(&iwl_conf->mcs, &ht_conf->mcs, 16);
2443 iwl_conf->tx_chan_width = iwl_conf->supported_chan_width != 0;
2444 iwl_conf->ht_protection =
2445 bss_conf->ht_operation_mode & IEEE80211_HT_OP_MODE_PROTECTION;
2446 iwl_conf->non_GF_STA_present =
2447 !!(bss_conf->ht_operation_mode & IEEE80211_HT_OP_MODE_NON_GF_STA_PRSNT);
2451 IWL_DEBUG_MAC80211(priv, "leave\n");
2454 #define IWL_DELAY_NEXT_SCAN_AFTER_ASSOC (HZ*6)
2455 void iwl_bss_info_changed(struct ieee80211_hw *hw,
2456 struct ieee80211_vif *vif,
2457 struct ieee80211_bss_conf *bss_conf,
2460 struct iwl_priv *priv = hw->priv;
2463 IWL_DEBUG_MAC80211(priv, "changes = 0x%X\n", changes);
2465 if (!iwl_is_alive(priv))
2468 mutex_lock(&priv->mutex);
2470 if (changes & BSS_CHANGED_BEACON &&
2471 priv->iw_mode == NL80211_IFTYPE_AP) {
2472 dev_kfree_skb(priv->ibss_beacon);
2473 priv->ibss_beacon = ieee80211_beacon_get(hw, vif);
2476 if (changes & BSS_CHANGED_BEACON_INT) {
2477 priv->beacon_int = bss_conf->beacon_int;
2478 /* TODO: in AP mode, do something to make this take effect */
2481 if (changes & BSS_CHANGED_BSSID) {
2482 IWL_DEBUG_MAC80211(priv, "BSSID %pM\n", bss_conf->bssid);
2485 * If there is currently a HW scan going on in the
2486 * background then we need to cancel it else the RXON
2487 * below/in post_associate will fail.
2489 if (iwl_scan_cancel_timeout(priv, 100)) {
2490 IWL_WARN(priv, "Aborted scan still in progress after 100ms\n");
2491 IWL_DEBUG_MAC80211(priv, "leaving - scan abort failed.\n");
2492 mutex_unlock(&priv->mutex);
2496 /* mac80211 only sets assoc when in STATION mode */
2497 if (priv->iw_mode == NL80211_IFTYPE_ADHOC ||
2499 memcpy(priv->staging_rxon.bssid_addr,
2500 bss_conf->bssid, ETH_ALEN);
2502 /* currently needed in a few places */
2503 memcpy(priv->bssid, bss_conf->bssid, ETH_ALEN);
2505 priv->staging_rxon.filter_flags &=
2506 ~RXON_FILTER_ASSOC_MSK;
2512 * This needs to be after setting the BSSID in case
2513 * mac80211 decides to do both changes at once because
2514 * it will invoke post_associate.
2516 if (priv->iw_mode == NL80211_IFTYPE_ADHOC &&
2517 changes & BSS_CHANGED_BEACON) {
2518 struct sk_buff *beacon = ieee80211_beacon_get(hw, vif);
2521 iwl_mac_beacon_update(hw, beacon);
2524 if (changes & BSS_CHANGED_ERP_PREAMBLE) {
2525 IWL_DEBUG_MAC80211(priv, "ERP_PREAMBLE %d\n",
2526 bss_conf->use_short_preamble);
2527 if (bss_conf->use_short_preamble)
2528 priv->staging_rxon.flags |= RXON_FLG_SHORT_PREAMBLE_MSK;
2530 priv->staging_rxon.flags &= ~RXON_FLG_SHORT_PREAMBLE_MSK;
2533 if (changes & BSS_CHANGED_ERP_CTS_PROT) {
2534 IWL_DEBUG_MAC80211(priv, "ERP_CTS %d\n", bss_conf->use_cts_prot);
2535 if (bss_conf->use_cts_prot && (priv->band != IEEE80211_BAND_5GHZ))
2536 priv->staging_rxon.flags |= RXON_FLG_TGG_PROTECT_MSK;
2538 priv->staging_rxon.flags &= ~RXON_FLG_TGG_PROTECT_MSK;
2541 if (changes & BSS_CHANGED_BASIC_RATES) {
2542 /* XXX use this information
2544 * To do that, remove code from iwl_set_rate() and put something
2548 priv->staging_rxon.ofdm_basic_rates =
2549 bss_conf->basic_rates;
2551 priv->staging_rxon.ofdm_basic_rates =
2552 bss_conf->basic_rates >> 4;
2553 priv->staging_rxon.cck_basic_rates =
2554 bss_conf->basic_rates & 0xF;
2558 if (changes & BSS_CHANGED_HT) {
2559 iwl_ht_conf(priv, bss_conf);
2561 if (priv->cfg->ops->hcmd->set_rxon_chain)
2562 priv->cfg->ops->hcmd->set_rxon_chain(priv);
2565 if (changes & BSS_CHANGED_ASSOC) {
2566 IWL_DEBUG_MAC80211(priv, "ASSOC %d\n", bss_conf->assoc);
2567 if (bss_conf->assoc) {
2568 priv->assoc_id = bss_conf->aid;
2569 priv->beacon_int = bss_conf->beacon_int;
2570 priv->power_data.dtim_period = bss_conf->dtim_period;
2571 priv->timestamp = bss_conf->timestamp;
2572 priv->assoc_capability = bss_conf->assoc_capability;
2575 * We have just associated, don't start scan too early
2576 * leave time for EAPOL exchange to complete.
2578 * XXX: do this in mac80211
2580 priv->next_scan_jiffies = jiffies +
2581 IWL_DELAY_NEXT_SCAN_AFTER_ASSOC;
2582 if (!iwl_is_rfkill(priv))
2583 priv->cfg->ops->lib->post_associate(priv);
2589 if (changes && iwl_is_associated(priv) && priv->assoc_id) {
2590 IWL_DEBUG_MAC80211(priv, "Changes (%#x) while associated\n",
2592 ret = iwl_send_rxon_assoc(priv);
2594 /* Sync active_rxon with latest change. */
2595 memcpy((void *)&priv->active_rxon,
2596 &priv->staging_rxon,
2597 sizeof(struct iwl_rxon_cmd));
2601 mutex_unlock(&priv->mutex);
2603 IWL_DEBUG_MAC80211(priv, "leave\n");
2605 EXPORT_SYMBOL(iwl_bss_info_changed);
2607 int iwl_mac_beacon_update(struct ieee80211_hw *hw, struct sk_buff *skb)
2609 struct iwl_priv *priv = hw->priv;
2610 unsigned long flags;
2613 IWL_DEBUG_MAC80211(priv, "enter\n");
2615 if (!iwl_is_ready_rf(priv)) {
2616 IWL_DEBUG_MAC80211(priv, "leave - RF not ready\n");
2620 if (priv->iw_mode != NL80211_IFTYPE_ADHOC) {
2621 IWL_DEBUG_MAC80211(priv, "leave - not IBSS\n");
2625 spin_lock_irqsave(&priv->lock, flags);
2627 if (priv->ibss_beacon)
2628 dev_kfree_skb(priv->ibss_beacon);
2630 priv->ibss_beacon = skb;
2633 timestamp = ((struct ieee80211_mgmt *)skb->data)->u.beacon.timestamp;
2634 priv->timestamp = le64_to_cpu(timestamp);
2636 IWL_DEBUG_MAC80211(priv, "leave\n");
2637 spin_unlock_irqrestore(&priv->lock, flags);
2639 iwl_reset_qos(priv);
2641 priv->cfg->ops->lib->post_associate(priv);
2646 EXPORT_SYMBOL(iwl_mac_beacon_update);
2648 int iwl_set_mode(struct iwl_priv *priv, int mode)
2650 if (mode == NL80211_IFTYPE_ADHOC) {
2651 const struct iwl_channel_info *ch_info;
2653 ch_info = iwl_get_channel_info(priv,
2655 le16_to_cpu(priv->staging_rxon.channel));
2657 if (!ch_info || !is_channel_ibss(ch_info)) {
2658 IWL_ERR(priv, "channel %d not IBSS channel\n",
2659 le16_to_cpu(priv->staging_rxon.channel));
2664 iwl_connection_init_rx_config(priv, mode);
2666 if (priv->cfg->ops->hcmd->set_rxon_chain)
2667 priv->cfg->ops->hcmd->set_rxon_chain(priv);
2669 memcpy(priv->staging_rxon.node_addr, priv->mac_addr, ETH_ALEN);
2671 iwl_clear_stations_table(priv);
2673 /* dont commit rxon if rf-kill is on*/
2674 if (!iwl_is_ready_rf(priv))
2677 iwlcore_commit_rxon(priv);
2681 EXPORT_SYMBOL(iwl_set_mode);
2683 int iwl_mac_add_interface(struct ieee80211_hw *hw,
2684 struct ieee80211_if_init_conf *conf)
2686 struct iwl_priv *priv = hw->priv;
2687 unsigned long flags;
2689 IWL_DEBUG_MAC80211(priv, "enter: type %d\n", conf->type);
2692 IWL_DEBUG_MAC80211(priv, "leave - vif != NULL\n");
2696 spin_lock_irqsave(&priv->lock, flags);
2697 priv->vif = conf->vif;
2698 priv->iw_mode = conf->type;
2700 spin_unlock_irqrestore(&priv->lock, flags);
2702 mutex_lock(&priv->mutex);
2704 if (conf->mac_addr) {
2705 IWL_DEBUG_MAC80211(priv, "Set %pM\n", conf->mac_addr);
2706 memcpy(priv->mac_addr, conf->mac_addr, ETH_ALEN);
2709 if (iwl_set_mode(priv, conf->type) == -EAGAIN)
2710 /* we are not ready, will run again when ready */
2711 set_bit(STATUS_MODE_PENDING, &priv->status);
2713 mutex_unlock(&priv->mutex);
2715 IWL_DEBUG_MAC80211(priv, "leave\n");
2718 EXPORT_SYMBOL(iwl_mac_add_interface);
2720 void iwl_mac_remove_interface(struct ieee80211_hw *hw,
2721 struct ieee80211_if_init_conf *conf)
2723 struct iwl_priv *priv = hw->priv;
2725 IWL_DEBUG_MAC80211(priv, "enter\n");
2727 mutex_lock(&priv->mutex);
2729 if (iwl_is_ready_rf(priv)) {
2730 iwl_scan_cancel_timeout(priv, 100);
2731 priv->staging_rxon.filter_flags &= ~RXON_FILTER_ASSOC_MSK;
2732 iwlcore_commit_rxon(priv);
2734 if (priv->vif == conf->vif) {
2736 memset(priv->bssid, 0, ETH_ALEN);
2738 mutex_unlock(&priv->mutex);
2740 IWL_DEBUG_MAC80211(priv, "leave\n");
2743 EXPORT_SYMBOL(iwl_mac_remove_interface);
2746 * iwl_mac_config - mac80211 config callback
2748 * We ignore conf->flags & IEEE80211_CONF_SHORT_SLOT_TIME since it seems to
2749 * be set inappropriately and the driver currently sets the hardware up to
2750 * use it whenever needed.
2752 int iwl_mac_config(struct ieee80211_hw *hw, u32 changed)
2754 struct iwl_priv *priv = hw->priv;
2755 const struct iwl_channel_info *ch_info;
2756 struct ieee80211_conf *conf = &hw->conf;
2757 unsigned long flags = 0;
2760 int scan_active = 0;
2762 mutex_lock(&priv->mutex);
2764 IWL_DEBUG_MAC80211(priv, "enter to channel %d changed 0x%X\n",
2765 conf->channel->hw_value, changed);
2767 if (unlikely(!priv->cfg->mod_params->disable_hw_scan &&
2768 test_bit(STATUS_SCANNING, &priv->status))) {
2770 IWL_DEBUG_MAC80211(priv, "leave - scanning\n");
2774 /* during scanning mac80211 will delay channel setting until
2775 * scan finish with changed = 0
2777 if (!changed || (changed & IEEE80211_CONF_CHANGE_CHANNEL)) {
2781 ch = ieee80211_frequency_to_channel(conf->channel->center_freq);
2782 ch_info = iwl_get_channel_info(priv, conf->channel->band, ch);
2783 if (!is_channel_valid(ch_info)) {
2784 IWL_DEBUG_MAC80211(priv, "leave - invalid channel\n");
2789 if (priv->iw_mode == NL80211_IFTYPE_ADHOC &&
2790 !is_channel_ibss(ch_info)) {
2791 IWL_ERR(priv, "channel %d in band %d not "
2793 conf->channel->hw_value, conf->channel->band);
2798 priv->current_ht_config.is_ht = conf_is_ht(conf);
2800 spin_lock_irqsave(&priv->lock, flags);
2803 /* if we are switching from ht to 2.4 clear flags
2804 * from any ht related info since 2.4 does not
2806 if ((le16_to_cpu(priv->staging_rxon.channel) != ch))
2807 priv->staging_rxon.flags = 0;
2809 iwl_set_rxon_channel(priv, conf->channel);
2811 iwl_set_flags_for_band(priv, conf->channel->band);
2812 spin_unlock_irqrestore(&priv->lock, flags);
2814 /* The list of supported rates and rate mask can be different
2815 * for each band; since the band may have changed, reset
2816 * the rate mask to what mac80211 lists */
2820 if (changed & IEEE80211_CONF_CHANGE_PS &&
2821 priv->iw_mode == NL80211_IFTYPE_STATION) {
2822 priv->power_data.power_disabled =
2823 !(conf->flags & IEEE80211_CONF_PS);
2824 ret = iwl_power_update_mode(priv, 0);
2826 IWL_DEBUG_MAC80211(priv, "Error setting power level\n");
2829 if (changed & IEEE80211_CONF_CHANGE_POWER) {
2830 IWL_DEBUG_MAC80211(priv, "TX Power old=%d new=%d\n",
2831 priv->tx_power_user_lmt, conf->power_level);
2833 iwl_set_tx_power(priv, conf->power_level, false);
2836 /* call to ensure that 4965 rx_chain is set properly in monitor mode */
2837 if (priv->cfg->ops->hcmd->set_rxon_chain)
2838 priv->cfg->ops->hcmd->set_rxon_chain(priv);
2840 if (!iwl_is_ready(priv)) {
2841 IWL_DEBUG_MAC80211(priv, "leave - not ready\n");
2848 if (memcmp(&priv->active_rxon,
2849 &priv->staging_rxon, sizeof(priv->staging_rxon)))
2850 iwlcore_commit_rxon(priv);
2852 IWL_DEBUG_INFO(priv, "Not re-sending same RXON configuration.\n");
2856 IWL_DEBUG_MAC80211(priv, "leave\n");
2857 mutex_unlock(&priv->mutex);
2860 EXPORT_SYMBOL(iwl_mac_config);
2862 int iwl_mac_get_tx_stats(struct ieee80211_hw *hw,
2863 struct ieee80211_tx_queue_stats *stats)
2865 struct iwl_priv *priv = hw->priv;
2867 struct iwl_tx_queue *txq;
2868 struct iwl_queue *q;
2869 unsigned long flags;
2871 IWL_DEBUG_MAC80211(priv, "enter\n");
2873 if (!iwl_is_ready_rf(priv)) {
2874 IWL_DEBUG_MAC80211(priv, "leave - RF not ready\n");
2878 spin_lock_irqsave(&priv->lock, flags);
2880 for (i = 0; i < AC_NUM; i++) {
2881 txq = &priv->txq[i];
2883 avail = iwl_queue_space(q);
2885 stats[i].len = q->n_window - avail;
2886 stats[i].limit = q->n_window - q->high_mark;
2887 stats[i].count = q->n_window;
2890 spin_unlock_irqrestore(&priv->lock, flags);
2892 IWL_DEBUG_MAC80211(priv, "leave\n");
2896 EXPORT_SYMBOL(iwl_mac_get_tx_stats);
2898 void iwl_mac_reset_tsf(struct ieee80211_hw *hw)
2900 struct iwl_priv *priv = hw->priv;
2901 unsigned long flags;
2903 mutex_lock(&priv->mutex);
2904 IWL_DEBUG_MAC80211(priv, "enter\n");
2906 spin_lock_irqsave(&priv->lock, flags);
2907 memset(&priv->current_ht_config, 0, sizeof(struct iwl_ht_info));
2908 spin_unlock_irqrestore(&priv->lock, flags);
2910 iwl_reset_qos(priv);
2912 spin_lock_irqsave(&priv->lock, flags);
2914 priv->assoc_capability = 0;
2915 priv->assoc_station_added = 0;
2917 /* new association get rid of ibss beacon skb */
2918 if (priv->ibss_beacon)
2919 dev_kfree_skb(priv->ibss_beacon);
2921 priv->ibss_beacon = NULL;
2923 priv->beacon_int = priv->vif->bss_conf.beacon_int;
2924 priv->timestamp = 0;
2925 if ((priv->iw_mode == NL80211_IFTYPE_STATION))
2926 priv->beacon_int = 0;
2928 spin_unlock_irqrestore(&priv->lock, flags);
2930 if (!iwl_is_ready_rf(priv)) {
2931 IWL_DEBUG_MAC80211(priv, "leave - not ready\n");
2932 mutex_unlock(&priv->mutex);
2936 /* we are restarting association process
2937 * clear RXON_FILTER_ASSOC_MSK bit
2939 if (priv->iw_mode != NL80211_IFTYPE_AP) {
2940 iwl_scan_cancel_timeout(priv, 100);
2941 priv->staging_rxon.filter_flags &= ~RXON_FILTER_ASSOC_MSK;
2942 iwlcore_commit_rxon(priv);
2945 if (priv->iw_mode != NL80211_IFTYPE_ADHOC) {
2946 IWL_DEBUG_MAC80211(priv, "leave - not in IBSS\n");
2947 mutex_unlock(&priv->mutex);
2953 mutex_unlock(&priv->mutex);
2955 IWL_DEBUG_MAC80211(priv, "leave\n");
2957 EXPORT_SYMBOL(iwl_mac_reset_tsf);
2961 int iwl_pci_suspend(struct pci_dev *pdev, pm_message_t state)
2963 struct iwl_priv *priv = pci_get_drvdata(pdev);
2966 * This function is called when system goes into suspend state
2967 * mac80211 will call iwl_mac_stop() from the mac80211 suspend function
2968 * first but since iwl_mac_stop() has no knowledge of who the caller is,
2969 * it will not call apm_ops.stop() to stop the DMA operation.
2970 * Calling apm_ops.stop here to make sure we stop the DMA.
2972 priv->cfg->ops->lib->apm_ops.stop(priv);
2974 pci_save_state(pdev);
2975 pci_disable_device(pdev);
2976 pci_set_power_state(pdev, PCI_D3hot);
2980 EXPORT_SYMBOL(iwl_pci_suspend);
2982 int iwl_pci_resume(struct pci_dev *pdev)
2984 struct iwl_priv *priv = pci_get_drvdata(pdev);
2987 pci_set_power_state(pdev, PCI_D0);
2988 ret = pci_enable_device(pdev);
2991 pci_restore_state(pdev);
2992 iwl_enable_interrupts(priv);
2996 EXPORT_SYMBOL(iwl_pci_resume);
2998 #endif /* CONFIG_PM */