1 /******************************************************************************
5 * Copyright(c) 2008 - 2011 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 <linux/sched.h>
33 #include <linux/slab.h>
34 #include <net/mac80211.h>
36 #include "iwl-eeprom.h"
38 #include "iwl-debug.h"
41 #include "iwl-power.h"
43 #include "iwl-helpers.h"
46 MODULE_DESCRIPTION("iwl-legacy: common functions for 3945 and 4965");
47 MODULE_VERSION(IWLWIFI_VERSION);
48 MODULE_AUTHOR(DRV_COPYRIGHT " " DRV_AUTHOR);
49 MODULE_LICENSE("GPL");
52 * set bt_coex_active to true, uCode will do kill/defer
53 * every time the priority line is asserted (BT is sending signals on the
54 * priority line in the PCIx).
55 * set bt_coex_active to false, uCode will ignore the BT activity and
56 * perform the normal operation
58 * User might experience transmit issue on some platform due to WiFi/BT
59 * co-exist problem. The possible behaviors are:
60 * Able to scan and finding all the available AP
61 * Not able to associate with any AP
62 * On those platforms, WiFi communication can be restored by set
63 * "bt_coex_active" module parameter to "false"
65 * default: bt_coex_active = true (BT_COEX_ENABLE)
67 static bool bt_coex_active = true;
68 module_param(bt_coex_active, bool, S_IRUGO);
69 MODULE_PARM_DESC(bt_coex_active, "enable wifi/bluetooth co-exist");
71 u32 iwlegacy_debug_level;
72 EXPORT_SYMBOL(iwlegacy_debug_level);
74 const u8 iwlegacy_bcast_addr[ETH_ALEN] = { 0xFF, 0xFF, 0xFF, 0xFF, 0xFF, 0xFF };
75 EXPORT_SYMBOL(iwlegacy_bcast_addr);
78 /* This function both allocates and initializes hw and priv. */
79 struct ieee80211_hw *iwl_legacy_alloc_all(struct iwl_cfg *cfg)
81 struct iwl_priv *priv;
82 /* mac80211 allocates memory for this device instance, including
83 * space for this driver's private structure */
84 struct ieee80211_hw *hw;
86 hw = ieee80211_alloc_hw(sizeof(struct iwl_priv),
87 cfg->ops->ieee80211_ops);
89 pr_err("%s: Can not allocate network device\n",
100 EXPORT_SYMBOL(iwl_legacy_alloc_all);
102 #define MAX_BIT_RATE_40_MHZ 150 /* Mbps */
103 #define MAX_BIT_RATE_20_MHZ 72 /* Mbps */
104 static void iwl_legacy_init_ht_hw_capab(const struct iwl_priv *priv,
105 struct ieee80211_sta_ht_cap *ht_info,
106 enum ieee80211_band band)
108 u16 max_bit_rate = 0;
109 u8 rx_chains_num = priv->hw_params.rx_chains_num;
110 u8 tx_chains_num = priv->hw_params.tx_chains_num;
113 memset(&ht_info->mcs, 0, sizeof(ht_info->mcs));
115 ht_info->ht_supported = true;
117 ht_info->cap |= IEEE80211_HT_CAP_SGI_20;
118 max_bit_rate = MAX_BIT_RATE_20_MHZ;
119 if (priv->hw_params.ht40_channel & BIT(band)) {
120 ht_info->cap |= IEEE80211_HT_CAP_SUP_WIDTH_20_40;
121 ht_info->cap |= IEEE80211_HT_CAP_SGI_40;
122 ht_info->mcs.rx_mask[4] = 0x01;
123 max_bit_rate = MAX_BIT_RATE_40_MHZ;
126 if (priv->cfg->mod_params->amsdu_size_8K)
127 ht_info->cap |= IEEE80211_HT_CAP_MAX_AMSDU;
129 ht_info->ampdu_factor = CFG_HT_RX_AMPDU_FACTOR_DEF;
130 ht_info->ampdu_density = CFG_HT_MPDU_DENSITY_DEF;
132 ht_info->mcs.rx_mask[0] = 0xFF;
133 if (rx_chains_num >= 2)
134 ht_info->mcs.rx_mask[1] = 0xFF;
135 if (rx_chains_num >= 3)
136 ht_info->mcs.rx_mask[2] = 0xFF;
138 /* Highest supported Rx data rate */
139 max_bit_rate *= rx_chains_num;
140 WARN_ON(max_bit_rate & ~IEEE80211_HT_MCS_RX_HIGHEST_MASK);
141 ht_info->mcs.rx_highest = cpu_to_le16(max_bit_rate);
143 /* Tx MCS capabilities */
144 ht_info->mcs.tx_params = IEEE80211_HT_MCS_TX_DEFINED;
145 if (tx_chains_num != rx_chains_num) {
146 ht_info->mcs.tx_params |= IEEE80211_HT_MCS_TX_RX_DIFF;
147 ht_info->mcs.tx_params |= ((tx_chains_num - 1) <<
148 IEEE80211_HT_MCS_TX_MAX_STREAMS_SHIFT);
153 * iwl_legacy_init_geos - Initialize mac80211's geo/channel info based from eeprom
155 int iwl_legacy_init_geos(struct iwl_priv *priv)
157 struct iwl_channel_info *ch;
158 struct ieee80211_supported_band *sband;
159 struct ieee80211_channel *channels;
160 struct ieee80211_channel *geo_ch;
161 struct ieee80211_rate *rates;
164 if (priv->bands[IEEE80211_BAND_2GHZ].n_bitrates ||
165 priv->bands[IEEE80211_BAND_5GHZ].n_bitrates) {
166 IWL_DEBUG_INFO(priv, "Geography modes already initialized.\n");
167 set_bit(STATUS_GEO_CONFIGURED, &priv->status);
171 channels = kzalloc(sizeof(struct ieee80211_channel) *
172 priv->channel_count, GFP_KERNEL);
176 rates = kzalloc((sizeof(struct ieee80211_rate) * IWL_RATE_COUNT_LEGACY),
183 /* 5.2GHz channels start after the 2.4GHz channels */
184 sband = &priv->bands[IEEE80211_BAND_5GHZ];
185 sband->channels = &channels[ARRAY_SIZE(iwlegacy_eeprom_band_1)];
187 sband->bitrates = &rates[IWL_FIRST_OFDM_RATE];
188 sband->n_bitrates = IWL_RATE_COUNT_LEGACY - IWL_FIRST_OFDM_RATE;
190 if (priv->cfg->sku & IWL_SKU_N)
191 iwl_legacy_init_ht_hw_capab(priv, &sband->ht_cap,
192 IEEE80211_BAND_5GHZ);
194 sband = &priv->bands[IEEE80211_BAND_2GHZ];
195 sband->channels = channels;
197 sband->bitrates = rates;
198 sband->n_bitrates = IWL_RATE_COUNT_LEGACY;
200 if (priv->cfg->sku & IWL_SKU_N)
201 iwl_legacy_init_ht_hw_capab(priv, &sband->ht_cap,
202 IEEE80211_BAND_2GHZ);
204 priv->ieee_channels = channels;
205 priv->ieee_rates = rates;
207 for (i = 0; i < priv->channel_count; i++) {
208 ch = &priv->channel_info[i];
210 if (!iwl_legacy_is_channel_valid(ch))
213 if (iwl_legacy_is_channel_a_band(ch))
214 sband = &priv->bands[IEEE80211_BAND_5GHZ];
216 sband = &priv->bands[IEEE80211_BAND_2GHZ];
218 geo_ch = &sband->channels[sband->n_channels++];
220 geo_ch->center_freq =
221 ieee80211_channel_to_frequency(ch->channel, ch->band);
222 geo_ch->max_power = ch->max_power_avg;
223 geo_ch->max_antenna_gain = 0xff;
224 geo_ch->hw_value = ch->channel;
226 if (iwl_legacy_is_channel_valid(ch)) {
227 if (!(ch->flags & EEPROM_CHANNEL_IBSS))
228 geo_ch->flags |= IEEE80211_CHAN_NO_IBSS;
230 if (!(ch->flags & EEPROM_CHANNEL_ACTIVE))
231 geo_ch->flags |= IEEE80211_CHAN_PASSIVE_SCAN;
233 if (ch->flags & EEPROM_CHANNEL_RADAR)
234 geo_ch->flags |= IEEE80211_CHAN_RADAR;
236 geo_ch->flags |= ch->ht40_extension_channel;
238 if (ch->max_power_avg > priv->tx_power_device_lmt)
239 priv->tx_power_device_lmt = ch->max_power_avg;
241 geo_ch->flags |= IEEE80211_CHAN_DISABLED;
244 IWL_DEBUG_INFO(priv, "Channel %d Freq=%d[%sGHz] %s flag=0x%X\n",
245 ch->channel, geo_ch->center_freq,
246 iwl_legacy_is_channel_a_band(ch) ? "5.2" : "2.4",
247 geo_ch->flags & IEEE80211_CHAN_DISABLED ?
248 "restricted" : "valid",
252 if ((priv->bands[IEEE80211_BAND_5GHZ].n_channels == 0) &&
253 priv->cfg->sku & IWL_SKU_A) {
254 IWL_INFO(priv, "Incorrectly detected BG card as ABG. "
255 "Please send your PCI ID 0x%04X:0x%04X to maintainer.\n",
256 priv->pci_dev->device,
257 priv->pci_dev->subsystem_device);
258 priv->cfg->sku &= ~IWL_SKU_A;
261 IWL_INFO(priv, "Tunable channels: %d 802.11bg, %d 802.11a channels\n",
262 priv->bands[IEEE80211_BAND_2GHZ].n_channels,
263 priv->bands[IEEE80211_BAND_5GHZ].n_channels);
265 set_bit(STATUS_GEO_CONFIGURED, &priv->status);
269 EXPORT_SYMBOL(iwl_legacy_init_geos);
272 * iwl_legacy_free_geos - undo allocations in iwl_legacy_init_geos
274 void iwl_legacy_free_geos(struct iwl_priv *priv)
276 kfree(priv->ieee_channels);
277 kfree(priv->ieee_rates);
278 clear_bit(STATUS_GEO_CONFIGURED, &priv->status);
280 EXPORT_SYMBOL(iwl_legacy_free_geos);
282 static bool iwl_legacy_is_channel_extension(struct iwl_priv *priv,
283 enum ieee80211_band band,
284 u16 channel, u8 extension_chan_offset)
286 const struct iwl_channel_info *ch_info;
288 ch_info = iwl_legacy_get_channel_info(priv, band, channel);
289 if (!iwl_legacy_is_channel_valid(ch_info))
292 if (extension_chan_offset == IEEE80211_HT_PARAM_CHA_SEC_ABOVE)
293 return !(ch_info->ht40_extension_channel &
294 IEEE80211_CHAN_NO_HT40PLUS);
295 else if (extension_chan_offset == IEEE80211_HT_PARAM_CHA_SEC_BELOW)
296 return !(ch_info->ht40_extension_channel &
297 IEEE80211_CHAN_NO_HT40MINUS);
302 bool iwl_legacy_is_ht40_tx_allowed(struct iwl_priv *priv,
303 struct iwl_rxon_context *ctx,
304 struct ieee80211_sta_ht_cap *ht_cap)
306 if (!ctx->ht.enabled || !ctx->ht.is_40mhz)
310 * We do not check for IEEE80211_HT_CAP_SUP_WIDTH_20_40
311 * the bit will not set if it is pure 40MHz case
313 if (ht_cap && !ht_cap->ht_supported)
316 #ifdef CONFIG_IWLWIFI_LEGACY_DEBUGFS
317 if (priv->disable_ht40)
321 return iwl_legacy_is_channel_extension(priv, priv->band,
322 le16_to_cpu(ctx->staging.channel),
323 ctx->ht.extension_chan_offset);
325 EXPORT_SYMBOL(iwl_legacy_is_ht40_tx_allowed);
327 static u16 iwl_legacy_adjust_beacon_interval(u16 beacon_val, u16 max_beacon_val)
333 * If mac80211 hasn't given us a beacon interval, program
334 * the default into the device.
337 return DEFAULT_BEACON_INTERVAL;
340 * If the beacon interval we obtained from the peer
341 * is too large, we'll have to wake up more often
342 * (and in IBSS case, we'll beacon too much)
344 * For example, if max_beacon_val is 4096, and the
345 * requested beacon interval is 7000, we'll have to
346 * use 3500 to be able to wake up on the beacons.
348 * This could badly influence beacon detection stats.
351 beacon_factor = (beacon_val + max_beacon_val) / max_beacon_val;
352 new_val = beacon_val / beacon_factor;
355 new_val = max_beacon_val;
361 iwl_legacy_send_rxon_timing(struct iwl_priv *priv, struct iwl_rxon_context *ctx)
364 s32 interval_tm, rem;
365 struct ieee80211_conf *conf = NULL;
367 struct ieee80211_vif *vif = ctx->vif;
369 conf = iwl_legacy_ieee80211_get_hw_conf(priv->hw);
371 lockdep_assert_held(&priv->mutex);
373 memset(&ctx->timing, 0, sizeof(struct iwl_rxon_time_cmd));
375 ctx->timing.timestamp = cpu_to_le64(priv->timestamp);
376 ctx->timing.listen_interval = cpu_to_le16(conf->listen_interval);
378 beacon_int = vif ? vif->bss_conf.beacon_int : 0;
381 * TODO: For IBSS we need to get atim_window from mac80211,
382 * for now just always use 0
384 ctx->timing.atim_window = 0;
386 beacon_int = iwl_legacy_adjust_beacon_interval(beacon_int,
387 priv->hw_params.max_beacon_itrvl * TIME_UNIT);
388 ctx->timing.beacon_interval = cpu_to_le16(beacon_int);
390 tsf = priv->timestamp; /* tsf is modifed by do_div: copy it */
391 interval_tm = beacon_int * TIME_UNIT;
392 rem = do_div(tsf, interval_tm);
393 ctx->timing.beacon_init_val = cpu_to_le32(interval_tm - rem);
395 ctx->timing.dtim_period = vif ? (vif->bss_conf.dtim_period ?: 1) : 1;
397 IWL_DEBUG_ASSOC(priv,
398 "beacon interval %d beacon timer %d beacon tim %d\n",
399 le16_to_cpu(ctx->timing.beacon_interval),
400 le32_to_cpu(ctx->timing.beacon_init_val),
401 le16_to_cpu(ctx->timing.atim_window));
403 return iwl_legacy_send_cmd_pdu(priv, ctx->rxon_timing_cmd,
404 sizeof(ctx->timing), &ctx->timing);
406 EXPORT_SYMBOL(iwl_legacy_send_rxon_timing);
409 iwl_legacy_set_rxon_hwcrypto(struct iwl_priv *priv,
410 struct iwl_rxon_context *ctx,
413 struct iwl_legacy_rxon_cmd *rxon = &ctx->staging;
416 rxon->filter_flags &= ~RXON_FILTER_DIS_DECRYPT_MSK;
418 rxon->filter_flags |= RXON_FILTER_DIS_DECRYPT_MSK;
421 EXPORT_SYMBOL(iwl_legacy_set_rxon_hwcrypto);
423 /* validate RXON structure is valid */
425 iwl_legacy_check_rxon_cmd(struct iwl_priv *priv, struct iwl_rxon_context *ctx)
427 struct iwl_legacy_rxon_cmd *rxon = &ctx->staging;
430 if (rxon->flags & RXON_FLG_BAND_24G_MSK) {
431 if (rxon->flags & RXON_FLG_TGJ_NARROW_BAND_MSK) {
432 IWL_WARN(priv, "check 2.4G: wrong narrow\n");
435 if (rxon->flags & RXON_FLG_RADAR_DETECT_MSK) {
436 IWL_WARN(priv, "check 2.4G: wrong radar\n");
440 if (!(rxon->flags & RXON_FLG_SHORT_SLOT_MSK)) {
441 IWL_WARN(priv, "check 5.2G: not short slot!\n");
444 if (rxon->flags & RXON_FLG_CCK_MSK) {
445 IWL_WARN(priv, "check 5.2G: CCK!\n");
449 if ((rxon->node_addr[0] | rxon->bssid_addr[0]) & 0x1) {
450 IWL_WARN(priv, "mac/bssid mcast!\n");
454 /* make sure basic rates 6Mbps and 1Mbps are supported */
455 if ((rxon->ofdm_basic_rates & IWL_RATE_6M_MASK) == 0 &&
456 (rxon->cck_basic_rates & IWL_RATE_1M_MASK) == 0) {
457 IWL_WARN(priv, "neither 1 nor 6 are basic\n");
461 if (le16_to_cpu(rxon->assoc_id) > 2007) {
462 IWL_WARN(priv, "aid > 2007\n");
466 if ((rxon->flags & (RXON_FLG_CCK_MSK | RXON_FLG_SHORT_SLOT_MSK))
467 == (RXON_FLG_CCK_MSK | RXON_FLG_SHORT_SLOT_MSK)) {
468 IWL_WARN(priv, "CCK and short slot\n");
472 if ((rxon->flags & (RXON_FLG_CCK_MSK | RXON_FLG_AUTO_DETECT_MSK))
473 == (RXON_FLG_CCK_MSK | RXON_FLG_AUTO_DETECT_MSK)) {
474 IWL_WARN(priv, "CCK and auto detect");
478 if ((rxon->flags & (RXON_FLG_AUTO_DETECT_MSK |
479 RXON_FLG_TGG_PROTECT_MSK)) ==
480 RXON_FLG_TGG_PROTECT_MSK) {
481 IWL_WARN(priv, "TGg but no auto-detect\n");
486 IWL_WARN(priv, "Tuning to channel %d\n",
487 le16_to_cpu(rxon->channel));
490 IWL_ERR(priv, "Invalid RXON\n");
495 EXPORT_SYMBOL(iwl_legacy_check_rxon_cmd);
498 * iwl_legacy_full_rxon_required - check if full RXON (vs RXON_ASSOC) cmd is needed
499 * @priv: staging_rxon is compared to active_rxon
501 * If the RXON structure is changing enough to require a new tune,
502 * or is clearing the RXON_FILTER_ASSOC_MSK, then return 1 to indicate that
503 * a new tune (full RXON command, rather than RXON_ASSOC cmd) is required.
505 int iwl_legacy_full_rxon_required(struct iwl_priv *priv,
506 struct iwl_rxon_context *ctx)
508 const struct iwl_legacy_rxon_cmd *staging = &ctx->staging;
509 const struct iwl_legacy_rxon_cmd *active = &ctx->active;
513 IWL_DEBUG_INFO(priv, "need full RXON - " #cond "\n"); \
517 #define CHK_NEQ(c1, c2) \
518 if ((c1) != (c2)) { \
519 IWL_DEBUG_INFO(priv, "need full RXON - " \
520 #c1 " != " #c2 " - %d != %d\n", \
525 /* These items are only settable from the full RXON command */
526 CHK(!iwl_legacy_is_associated_ctx(ctx));
527 CHK(compare_ether_addr(staging->bssid_addr, active->bssid_addr));
528 CHK(compare_ether_addr(staging->node_addr, active->node_addr));
529 CHK(compare_ether_addr(staging->wlap_bssid_addr,
530 active->wlap_bssid_addr));
531 CHK_NEQ(staging->dev_type, active->dev_type);
532 CHK_NEQ(staging->channel, active->channel);
533 CHK_NEQ(staging->air_propagation, active->air_propagation);
534 CHK_NEQ(staging->ofdm_ht_single_stream_basic_rates,
535 active->ofdm_ht_single_stream_basic_rates);
536 CHK_NEQ(staging->ofdm_ht_dual_stream_basic_rates,
537 active->ofdm_ht_dual_stream_basic_rates);
538 CHK_NEQ(staging->assoc_id, active->assoc_id);
540 /* flags, filter_flags, ofdm_basic_rates, and cck_basic_rates can
541 * be updated with the RXON_ASSOC command -- however only some
542 * flag transitions are allowed using RXON_ASSOC */
544 /* Check if we are not switching bands */
545 CHK_NEQ(staging->flags & RXON_FLG_BAND_24G_MSK,
546 active->flags & RXON_FLG_BAND_24G_MSK);
548 /* Check if we are switching association toggle */
549 CHK_NEQ(staging->filter_flags & RXON_FILTER_ASSOC_MSK,
550 active->filter_flags & RXON_FILTER_ASSOC_MSK);
557 EXPORT_SYMBOL(iwl_legacy_full_rxon_required);
559 u8 iwl_legacy_get_lowest_plcp(struct iwl_priv *priv,
560 struct iwl_rxon_context *ctx)
563 * Assign the lowest rate -- should really get this from
564 * the beacon skb from mac80211.
566 if (ctx->staging.flags & RXON_FLG_BAND_24G_MSK)
567 return IWL_RATE_1M_PLCP;
569 return IWL_RATE_6M_PLCP;
571 EXPORT_SYMBOL(iwl_legacy_get_lowest_plcp);
573 static void _iwl_legacy_set_rxon_ht(struct iwl_priv *priv,
574 struct iwl_ht_config *ht_conf,
575 struct iwl_rxon_context *ctx)
577 struct iwl_legacy_rxon_cmd *rxon = &ctx->staging;
579 if (!ctx->ht.enabled) {
580 rxon->flags &= ~(RXON_FLG_CHANNEL_MODE_MSK |
581 RXON_FLG_CTRL_CHANNEL_LOC_HI_MSK |
582 RXON_FLG_HT40_PROT_MSK |
583 RXON_FLG_HT_PROT_MSK);
587 rxon->flags |= cpu_to_le32(ctx->ht.protection <<
588 RXON_FLG_HT_OPERATING_MODE_POS);
590 /* Set up channel bandwidth:
591 * 20 MHz only, 20/40 mixed or pure 40 if ht40 ok */
592 /* clear the HT channel mode before set the mode */
593 rxon->flags &= ~(RXON_FLG_CHANNEL_MODE_MSK |
594 RXON_FLG_CTRL_CHANNEL_LOC_HI_MSK);
595 if (iwl_legacy_is_ht40_tx_allowed(priv, ctx, NULL)) {
597 if (ctx->ht.protection ==
598 IEEE80211_HT_OP_MODE_PROTECTION_20MHZ) {
599 rxon->flags |= RXON_FLG_CHANNEL_MODE_PURE_40;
600 /* Note: control channel is opposite of extension channel */
601 switch (ctx->ht.extension_chan_offset) {
602 case IEEE80211_HT_PARAM_CHA_SEC_ABOVE:
604 ~RXON_FLG_CTRL_CHANNEL_LOC_HI_MSK;
606 case IEEE80211_HT_PARAM_CHA_SEC_BELOW:
608 RXON_FLG_CTRL_CHANNEL_LOC_HI_MSK;
612 /* Note: control channel is opposite of extension channel */
613 switch (ctx->ht.extension_chan_offset) {
614 case IEEE80211_HT_PARAM_CHA_SEC_ABOVE:
616 ~(RXON_FLG_CTRL_CHANNEL_LOC_HI_MSK);
617 rxon->flags |= RXON_FLG_CHANNEL_MODE_MIXED;
619 case IEEE80211_HT_PARAM_CHA_SEC_BELOW:
621 RXON_FLG_CTRL_CHANNEL_LOC_HI_MSK;
622 rxon->flags |= RXON_FLG_CHANNEL_MODE_MIXED;
624 case IEEE80211_HT_PARAM_CHA_SEC_NONE:
626 /* channel location only valid if in Mixed mode */
628 "invalid extension channel offset\n");
633 rxon->flags |= RXON_FLG_CHANNEL_MODE_LEGACY;
636 if (priv->cfg->ops->hcmd->set_rxon_chain)
637 priv->cfg->ops->hcmd->set_rxon_chain(priv, ctx);
639 IWL_DEBUG_ASSOC(priv, "rxon flags 0x%X operation mode :0x%X "
640 "extension channel offset 0x%x\n",
641 le32_to_cpu(rxon->flags), ctx->ht.protection,
642 ctx->ht.extension_chan_offset);
645 void iwl_legacy_set_rxon_ht(struct iwl_priv *priv, struct iwl_ht_config *ht_conf)
647 struct iwl_rxon_context *ctx;
649 for_each_context(priv, ctx)
650 _iwl_legacy_set_rxon_ht(priv, ht_conf, ctx);
652 EXPORT_SYMBOL(iwl_legacy_set_rxon_ht);
654 /* Return valid, unused, channel for a passive scan to reset the RF */
655 u8 iwl_legacy_get_single_channel_number(struct iwl_priv *priv,
656 enum ieee80211_band band)
658 const struct iwl_channel_info *ch_info;
662 struct iwl_rxon_context *ctx;
664 if (band == IEEE80211_BAND_5GHZ) {
666 max = priv->channel_count;
672 for (i = min; i < max; i++) {
675 for_each_context(priv, ctx) {
676 busy = priv->channel_info[i].channel ==
677 le16_to_cpu(ctx->staging.channel);
685 channel = priv->channel_info[i].channel;
686 ch_info = iwl_legacy_get_channel_info(priv, band, channel);
687 if (iwl_legacy_is_channel_valid(ch_info))
693 EXPORT_SYMBOL(iwl_legacy_get_single_channel_number);
696 * iwl_legacy_set_rxon_channel - Set the band and channel values in staging RXON
697 * @ch: requested channel as a pointer to struct ieee80211_channel
699 * NOTE: Does not commit to the hardware; it sets appropriate bit fields
700 * in the staging RXON flag structure based on the ch->band
703 iwl_legacy_set_rxon_channel(struct iwl_priv *priv, struct ieee80211_channel *ch,
704 struct iwl_rxon_context *ctx)
706 enum ieee80211_band band = ch->band;
707 u16 channel = ch->hw_value;
709 if ((le16_to_cpu(ctx->staging.channel) == channel) &&
710 (priv->band == band))
713 ctx->staging.channel = cpu_to_le16(channel);
714 if (band == IEEE80211_BAND_5GHZ)
715 ctx->staging.flags &= ~RXON_FLG_BAND_24G_MSK;
717 ctx->staging.flags |= RXON_FLG_BAND_24G_MSK;
721 IWL_DEBUG_INFO(priv, "Staging channel set to %d [%d]\n", channel, band);
725 EXPORT_SYMBOL(iwl_legacy_set_rxon_channel);
727 void iwl_legacy_set_flags_for_band(struct iwl_priv *priv,
728 struct iwl_rxon_context *ctx,
729 enum ieee80211_band band,
730 struct ieee80211_vif *vif)
732 if (band == IEEE80211_BAND_5GHZ) {
733 ctx->staging.flags &=
734 ~(RXON_FLG_BAND_24G_MSK | RXON_FLG_AUTO_DETECT_MSK
736 ctx->staging.flags |= RXON_FLG_SHORT_SLOT_MSK;
738 /* Copied from iwl_post_associate() */
739 if (vif && vif->bss_conf.use_short_slot)
740 ctx->staging.flags |= RXON_FLG_SHORT_SLOT_MSK;
742 ctx->staging.flags &= ~RXON_FLG_SHORT_SLOT_MSK;
744 ctx->staging.flags |= RXON_FLG_BAND_24G_MSK;
745 ctx->staging.flags |= RXON_FLG_AUTO_DETECT_MSK;
746 ctx->staging.flags &= ~RXON_FLG_CCK_MSK;
749 EXPORT_SYMBOL(iwl_legacy_set_flags_for_band);
752 * initialize rxon structure with default values from eeprom
754 void iwl_legacy_connection_init_rx_config(struct iwl_priv *priv,
755 struct iwl_rxon_context *ctx)
757 const struct iwl_channel_info *ch_info;
759 memset(&ctx->staging, 0, sizeof(ctx->staging));
762 ctx->staging.dev_type = ctx->unused_devtype;
764 switch (ctx->vif->type) {
766 case NL80211_IFTYPE_STATION:
767 ctx->staging.dev_type = ctx->station_devtype;
768 ctx->staging.filter_flags = RXON_FILTER_ACCEPT_GRP_MSK;
771 case NL80211_IFTYPE_ADHOC:
772 ctx->staging.dev_type = ctx->ibss_devtype;
773 ctx->staging.flags = RXON_FLG_SHORT_PREAMBLE_MSK;
774 ctx->staging.filter_flags = RXON_FILTER_BCON_AWARE_MSK |
775 RXON_FILTER_ACCEPT_GRP_MSK;
779 IWL_ERR(priv, "Unsupported interface type %d\n",
785 /* TODO: Figure out when short_preamble would be set and cache from
787 if (!hw_to_local(priv->hw)->short_preamble)
788 ctx->staging.flags &= ~RXON_FLG_SHORT_PREAMBLE_MSK;
790 ctx->staging.flags |= RXON_FLG_SHORT_PREAMBLE_MSK;
793 ch_info = iwl_legacy_get_channel_info(priv, priv->band,
794 le16_to_cpu(ctx->active.channel));
797 ch_info = &priv->channel_info[0];
799 ctx->staging.channel = cpu_to_le16(ch_info->channel);
800 priv->band = ch_info->band;
802 iwl_legacy_set_flags_for_band(priv, ctx, priv->band, ctx->vif);
804 ctx->staging.ofdm_basic_rates =
805 (IWL_OFDM_RATES_MASK >> IWL_FIRST_OFDM_RATE) & 0xFF;
806 ctx->staging.cck_basic_rates =
807 (IWL_CCK_RATES_MASK >> IWL_FIRST_CCK_RATE) & 0xF;
809 /* clear both MIX and PURE40 mode flag */
810 ctx->staging.flags &= ~(RXON_FLG_CHANNEL_MODE_MIXED |
811 RXON_FLG_CHANNEL_MODE_PURE_40);
813 memcpy(ctx->staging.node_addr, ctx->vif->addr, ETH_ALEN);
815 ctx->staging.ofdm_ht_single_stream_basic_rates = 0xff;
816 ctx->staging.ofdm_ht_dual_stream_basic_rates = 0xff;
818 EXPORT_SYMBOL(iwl_legacy_connection_init_rx_config);
820 void iwl_legacy_set_rate(struct iwl_priv *priv)
822 const struct ieee80211_supported_band *hw = NULL;
823 struct ieee80211_rate *rate;
824 struct iwl_rxon_context *ctx;
827 hw = iwl_get_hw_mode(priv, priv->band);
829 IWL_ERR(priv, "Failed to set rate: unable to get hw mode\n");
833 priv->active_rate = 0;
835 for (i = 0; i < hw->n_bitrates; i++) {
836 rate = &(hw->bitrates[i]);
837 if (rate->hw_value < IWL_RATE_COUNT_LEGACY)
838 priv->active_rate |= (1 << rate->hw_value);
841 IWL_DEBUG_RATE(priv, "Set active_rate = %0x\n", priv->active_rate);
843 for_each_context(priv, ctx) {
844 ctx->staging.cck_basic_rates =
845 (IWL_CCK_BASIC_RATES_MASK >> IWL_FIRST_CCK_RATE) & 0xF;
847 ctx->staging.ofdm_basic_rates =
848 (IWL_OFDM_BASIC_RATES_MASK >> IWL_FIRST_OFDM_RATE) & 0xFF;
851 EXPORT_SYMBOL(iwl_legacy_set_rate);
853 void iwl_legacy_chswitch_done(struct iwl_priv *priv, bool is_success)
855 struct iwl_rxon_context *ctx = &priv->contexts[IWL_RXON_CTX_BSS];
857 if (test_bit(STATUS_EXIT_PENDING, &priv->status))
860 if (priv->switch_rxon.switch_in_progress) {
861 ieee80211_chswitch_done(ctx->vif, is_success);
862 mutex_lock(&priv->mutex);
863 priv->switch_rxon.switch_in_progress = false;
864 mutex_unlock(&priv->mutex);
867 EXPORT_SYMBOL(iwl_legacy_chswitch_done);
869 void iwl_legacy_rx_csa(struct iwl_priv *priv, struct iwl_rx_mem_buffer *rxb)
871 struct iwl_rx_packet *pkt = rxb_addr(rxb);
872 struct iwl_csa_notification *csa = &(pkt->u.csa_notif);
874 struct iwl_rxon_context *ctx = &priv->contexts[IWL_RXON_CTX_BSS];
875 struct iwl_legacy_rxon_cmd *rxon = (void *)&ctx->active;
877 if (priv->switch_rxon.switch_in_progress) {
878 if (!le32_to_cpu(csa->status) &&
879 (csa->channel == priv->switch_rxon.channel)) {
880 rxon->channel = csa->channel;
881 ctx->staging.channel = csa->channel;
882 IWL_DEBUG_11H(priv, "CSA notif: channel %d\n",
883 le16_to_cpu(csa->channel));
884 iwl_legacy_chswitch_done(priv, true);
886 IWL_ERR(priv, "CSA notif (fail) : channel %d\n",
887 le16_to_cpu(csa->channel));
888 iwl_legacy_chswitch_done(priv, false);
892 EXPORT_SYMBOL(iwl_legacy_rx_csa);
894 #ifdef CONFIG_IWLWIFI_LEGACY_DEBUG
895 void iwl_legacy_print_rx_config_cmd(struct iwl_priv *priv,
896 struct iwl_rxon_context *ctx)
898 struct iwl_legacy_rxon_cmd *rxon = &ctx->staging;
900 IWL_DEBUG_RADIO(priv, "RX CONFIG:\n");
901 iwl_print_hex_dump(priv, IWL_DL_RADIO, (u8 *) rxon, sizeof(*rxon));
902 IWL_DEBUG_RADIO(priv, "u16 channel: 0x%x\n",
903 le16_to_cpu(rxon->channel));
904 IWL_DEBUG_RADIO(priv, "u32 flags: 0x%08X\n", le32_to_cpu(rxon->flags));
905 IWL_DEBUG_RADIO(priv, "u32 filter_flags: 0x%08x\n",
906 le32_to_cpu(rxon->filter_flags));
907 IWL_DEBUG_RADIO(priv, "u8 dev_type: 0x%x\n", rxon->dev_type);
908 IWL_DEBUG_RADIO(priv, "u8 ofdm_basic_rates: 0x%02x\n",
909 rxon->ofdm_basic_rates);
910 IWL_DEBUG_RADIO(priv, "u8 cck_basic_rates: 0x%02x\n",
911 rxon->cck_basic_rates);
912 IWL_DEBUG_RADIO(priv, "u8[6] node_addr: %pM\n", rxon->node_addr);
913 IWL_DEBUG_RADIO(priv, "u8[6] bssid_addr: %pM\n", rxon->bssid_addr);
914 IWL_DEBUG_RADIO(priv, "u16 assoc_id: 0x%x\n",
915 le16_to_cpu(rxon->assoc_id));
917 EXPORT_SYMBOL(iwl_legacy_print_rx_config_cmd);
920 * iwl_legacy_irq_handle_error - called for HW or SW error interrupt from card
922 void iwl_legacy_irq_handle_error(struct iwl_priv *priv)
924 /* Set the FW error flag -- cleared on iwl_down */
925 set_bit(STATUS_FW_ERROR, &priv->status);
927 /* Cancel currently queued command. */
928 clear_bit(STATUS_HCMD_ACTIVE, &priv->status);
930 IWL_ERR(priv, "Loaded firmware version: %s\n",
931 priv->hw->wiphy->fw_version);
933 priv->cfg->ops->lib->dump_nic_error_log(priv);
934 if (priv->cfg->ops->lib->dump_fh)
935 priv->cfg->ops->lib->dump_fh(priv, NULL, false);
936 priv->cfg->ops->lib->dump_nic_event_log(priv, false, NULL, false);
937 #ifdef CONFIG_IWLWIFI_LEGACY_DEBUG
938 if (iwl_legacy_get_debug_level(priv) & IWL_DL_FW_ERRORS)
939 iwl_legacy_print_rx_config_cmd(priv,
940 &priv->contexts[IWL_RXON_CTX_BSS]);
943 wake_up_interruptible(&priv->wait_command_queue);
945 /* Keep the restart process from trying to send host
946 * commands by clearing the INIT status bit */
947 clear_bit(STATUS_READY, &priv->status);
949 if (!test_bit(STATUS_EXIT_PENDING, &priv->status)) {
950 IWL_DEBUG(priv, IWL_DL_FW_ERRORS,
951 "Restarting adapter due to uCode error.\n");
953 if (priv->cfg->mod_params->restart_fw)
954 queue_work(priv->workqueue, &priv->restart);
957 EXPORT_SYMBOL(iwl_legacy_irq_handle_error);
959 static int iwl_legacy_apm_stop_master(struct iwl_priv *priv)
963 /* stop device's busmaster DMA activity */
964 iwl_legacy_set_bit(priv, CSR_RESET, CSR_RESET_REG_FLAG_STOP_MASTER);
966 ret = iwl_poll_bit(priv, CSR_RESET, CSR_RESET_REG_FLAG_MASTER_DISABLED,
967 CSR_RESET_REG_FLAG_MASTER_DISABLED, 100);
969 IWL_WARN(priv, "Master Disable Timed Out, 100 usec\n");
971 IWL_DEBUG_INFO(priv, "stop master\n");
976 void iwl_legacy_apm_stop(struct iwl_priv *priv)
978 IWL_DEBUG_INFO(priv, "Stop card, put in low power state\n");
980 /* Stop device's DMA activity */
981 iwl_legacy_apm_stop_master(priv);
983 /* Reset the entire device */
984 iwl_legacy_set_bit(priv, CSR_RESET, CSR_RESET_REG_FLAG_SW_RESET);
989 * Clear "initialization complete" bit to move adapter from
990 * D0A* (powered-up Active) --> D0U* (Uninitialized) state.
992 iwl_legacy_clear_bit(priv, CSR_GP_CNTRL,
993 CSR_GP_CNTRL_REG_FLAG_INIT_DONE);
995 EXPORT_SYMBOL(iwl_legacy_apm_stop);
999 * Start up NIC's basic functionality after it has been reset
1000 * (e.g. after platform boot, or shutdown via iwl_legacy_apm_stop())
1001 * NOTE: This does not load uCode nor start the embedded processor
1003 int iwl_legacy_apm_init(struct iwl_priv *priv)
1008 IWL_DEBUG_INFO(priv, "Init card's basic functions\n");
1011 * Use "set_bit" below rather than "write", to preserve any hardware
1012 * bits already set by default after reset.
1015 /* Disable L0S exit timer (platform NMI Work/Around) */
1016 iwl_legacy_set_bit(priv, CSR_GIO_CHICKEN_BITS,
1017 CSR_GIO_CHICKEN_BITS_REG_BIT_DIS_L0S_EXIT_TIMER);
1020 * Disable L0s without affecting L1;
1021 * don't wait for ICH L0s (ICH bug W/A)
1023 iwl_legacy_set_bit(priv, CSR_GIO_CHICKEN_BITS,
1024 CSR_GIO_CHICKEN_BITS_REG_BIT_L1A_NO_L0S_RX);
1026 /* Set FH wait threshold to maximum (HW error during stress W/A) */
1027 iwl_legacy_set_bit(priv, CSR_DBG_HPET_MEM_REG,
1028 CSR_DBG_HPET_MEM_REG_VAL);
1031 * Enable HAP INTA (interrupt from management bus) to
1032 * wake device's PCI Express link L1a -> L0s
1033 * NOTE: This is no-op for 3945 (non-existant bit)
1035 iwl_legacy_set_bit(priv, CSR_HW_IF_CONFIG_REG,
1036 CSR_HW_IF_CONFIG_REG_BIT_HAP_WAKE_L1A);
1039 * HW bug W/A for instability in PCIe bus L0->L0S->L1 transition.
1040 * Check if BIOS (or OS) enabled L1-ASPM on this device.
1041 * If so (likely), disable L0S, so device moves directly L0->L1;
1042 * costs negligible amount of power savings.
1043 * If not (unlikely), enable L0S, so there is at least some
1044 * power savings, even without L1.
1046 if (priv->cfg->base_params->set_l0s) {
1047 lctl = iwl_legacy_pcie_link_ctl(priv);
1048 if ((lctl & PCI_CFG_LINK_CTRL_VAL_L1_EN) ==
1049 PCI_CFG_LINK_CTRL_VAL_L1_EN) {
1050 /* L1-ASPM enabled; disable(!) L0S */
1051 iwl_legacy_set_bit(priv, CSR_GIO_REG,
1052 CSR_GIO_REG_VAL_L0S_ENABLED);
1053 IWL_DEBUG_POWER(priv, "L1 Enabled; Disabling L0S\n");
1055 /* L1-ASPM disabled; enable(!) L0S */
1056 iwl_legacy_clear_bit(priv, CSR_GIO_REG,
1057 CSR_GIO_REG_VAL_L0S_ENABLED);
1058 IWL_DEBUG_POWER(priv, "L1 Disabled; Enabling L0S\n");
1062 /* Configure analog phase-lock-loop before activating to D0A */
1063 if (priv->cfg->base_params->pll_cfg_val)
1064 iwl_legacy_set_bit(priv, CSR_ANA_PLL_CFG,
1065 priv->cfg->base_params->pll_cfg_val);
1068 * Set "initialization complete" bit to move adapter from
1069 * D0U* --> D0A* (powered-up active) state.
1071 iwl_legacy_set_bit(priv, CSR_GP_CNTRL, CSR_GP_CNTRL_REG_FLAG_INIT_DONE);
1074 * Wait for clock stabilization; once stabilized, access to
1075 * device-internal resources is supported, e.g. iwl_legacy_write_prph()
1076 * and accesses to uCode SRAM.
1078 ret = iwl_poll_bit(priv, CSR_GP_CNTRL,
1079 CSR_GP_CNTRL_REG_FLAG_MAC_CLOCK_READY,
1080 CSR_GP_CNTRL_REG_FLAG_MAC_CLOCK_READY, 25000);
1082 IWL_DEBUG_INFO(priv, "Failed to init the card\n");
1087 * Enable DMA and BSM (if used) clocks, wait for them to stabilize.
1088 * BSM (Boostrap State Machine) is only in 3945 and 4965.
1090 * Write to "CLK_EN_REG"; "1" bits enable clocks, while "0" bits
1091 * do not disable clocks. This preserves any hardware bits already
1092 * set by default in "CLK_CTRL_REG" after reset.
1094 if (priv->cfg->base_params->use_bsm)
1095 iwl_legacy_write_prph(priv, APMG_CLK_EN_REG,
1096 APMG_CLK_VAL_DMA_CLK_RQT | APMG_CLK_VAL_BSM_CLK_RQT);
1098 iwl_legacy_write_prph(priv, APMG_CLK_EN_REG,
1099 APMG_CLK_VAL_DMA_CLK_RQT);
1102 /* Disable L1-Active */
1103 iwl_legacy_set_bits_prph(priv, APMG_PCIDEV_STT_REG,
1104 APMG_PCIDEV_STT_VAL_L1_ACT_DIS);
1109 EXPORT_SYMBOL(iwl_legacy_apm_init);
1112 int iwl_legacy_set_tx_power(struct iwl_priv *priv, s8 tx_power, bool force)
1117 struct iwl_rxon_context *ctx = &priv->contexts[IWL_RXON_CTX_BSS];
1119 lockdep_assert_held(&priv->mutex);
1121 if (priv->tx_power_user_lmt == tx_power && !force)
1124 if (!priv->cfg->ops->lib->send_tx_power)
1127 if (tx_power < IWL4965_TX_POWER_TARGET_POWER_MIN) {
1129 "Requested user TXPOWER %d below lower limit %d.\n",
1131 IWL4965_TX_POWER_TARGET_POWER_MIN);
1135 if (tx_power > priv->tx_power_device_lmt) {
1137 "Requested user TXPOWER %d above upper limit %d.\n",
1138 tx_power, priv->tx_power_device_lmt);
1142 if (!iwl_legacy_is_ready_rf(priv))
1145 /* scan complete and commit_rxon use tx_power_next value,
1146 * it always need to be updated for newest request */
1147 priv->tx_power_next = tx_power;
1149 /* do not set tx power when scanning or channel changing */
1150 defer = test_bit(STATUS_SCANNING, &priv->status) ||
1151 memcmp(&ctx->active, &ctx->staging, sizeof(ctx->staging));
1152 if (defer && !force) {
1153 IWL_DEBUG_INFO(priv, "Deferring tx power set\n");
1157 prev_tx_power = priv->tx_power_user_lmt;
1158 priv->tx_power_user_lmt = tx_power;
1160 ret = priv->cfg->ops->lib->send_tx_power(priv);
1162 /* if fail to set tx_power, restore the orig. tx power */
1164 priv->tx_power_user_lmt = prev_tx_power;
1165 priv->tx_power_next = prev_tx_power;
1169 EXPORT_SYMBOL(iwl_legacy_set_tx_power);
1171 void iwl_legacy_send_bt_config(struct iwl_priv *priv)
1173 struct iwl_bt_cmd bt_cmd = {
1174 .lead_time = BT_LEAD_TIME_DEF,
1175 .max_kill = BT_MAX_KILL_DEF,
1180 if (!bt_coex_active)
1181 bt_cmd.flags = BT_COEX_DISABLE;
1183 bt_cmd.flags = BT_COEX_ENABLE;
1185 IWL_DEBUG_INFO(priv, "BT coex %s\n",
1186 (bt_cmd.flags == BT_COEX_DISABLE) ? "disable" : "active");
1188 if (iwl_legacy_send_cmd_pdu(priv, REPLY_BT_CONFIG,
1189 sizeof(struct iwl_bt_cmd), &bt_cmd))
1190 IWL_ERR(priv, "failed to send BT Coex Config\n");
1192 EXPORT_SYMBOL(iwl_legacy_send_bt_config);
1194 int iwl_legacy_send_statistics_request(struct iwl_priv *priv, u8 flags, bool clear)
1196 struct iwl_statistics_cmd statistics_cmd = {
1197 .configuration_flags =
1198 clear ? IWL_STATS_CONF_CLEAR_STATS : 0,
1201 if (flags & CMD_ASYNC)
1202 return iwl_legacy_send_cmd_pdu_async(priv, REPLY_STATISTICS_CMD,
1203 sizeof(struct iwl_statistics_cmd),
1204 &statistics_cmd, NULL);
1206 return iwl_legacy_send_cmd_pdu(priv, REPLY_STATISTICS_CMD,
1207 sizeof(struct iwl_statistics_cmd),
1210 EXPORT_SYMBOL(iwl_legacy_send_statistics_request);
1212 void iwl_legacy_rx_pm_sleep_notif(struct iwl_priv *priv,
1213 struct iwl_rx_mem_buffer *rxb)
1215 #ifdef CONFIG_IWLWIFI_LEGACY_DEBUG
1216 struct iwl_rx_packet *pkt = rxb_addr(rxb);
1217 struct iwl_sleep_notification *sleep = &(pkt->u.sleep_notif);
1218 IWL_DEBUG_RX(priv, "sleep mode: %d, src: %d\n",
1219 sleep->pm_sleep_mode, sleep->pm_wakeup_src);
1222 EXPORT_SYMBOL(iwl_legacy_rx_pm_sleep_notif);
1224 void iwl_legacy_rx_pm_debug_statistics_notif(struct iwl_priv *priv,
1225 struct iwl_rx_mem_buffer *rxb)
1227 struct iwl_rx_packet *pkt = rxb_addr(rxb);
1228 u32 len = le32_to_cpu(pkt->len_n_flags) & FH_RSCSR_FRAME_SIZE_MSK;
1229 IWL_DEBUG_RADIO(priv, "Dumping %d bytes of unhandled "
1230 "notification for %s:\n", len,
1231 iwl_legacy_get_cmd_string(pkt->hdr.cmd));
1232 iwl_print_hex_dump(priv, IWL_DL_RADIO, pkt->u.raw, len);
1234 EXPORT_SYMBOL(iwl_legacy_rx_pm_debug_statistics_notif);
1236 void iwl_legacy_rx_reply_error(struct iwl_priv *priv,
1237 struct iwl_rx_mem_buffer *rxb)
1239 struct iwl_rx_packet *pkt = rxb_addr(rxb);
1241 IWL_ERR(priv, "Error Reply type 0x%08X cmd %s (0x%02X) "
1242 "seq 0x%04X ser 0x%08X\n",
1243 le32_to_cpu(pkt->u.err_resp.error_type),
1244 iwl_legacy_get_cmd_string(pkt->u.err_resp.cmd_id),
1245 pkt->u.err_resp.cmd_id,
1246 le16_to_cpu(pkt->u.err_resp.bad_cmd_seq_num),
1247 le32_to_cpu(pkt->u.err_resp.error_info));
1249 EXPORT_SYMBOL(iwl_legacy_rx_reply_error);
1251 void iwl_legacy_clear_isr_stats(struct iwl_priv *priv)
1253 memset(&priv->isr_stats, 0, sizeof(priv->isr_stats));
1256 int iwl_legacy_mac_conf_tx(struct ieee80211_hw *hw, u16 queue,
1257 const struct ieee80211_tx_queue_params *params)
1259 struct iwl_priv *priv = hw->priv;
1260 struct iwl_rxon_context *ctx;
1261 unsigned long flags;
1264 IWL_DEBUG_MAC80211(priv, "enter\n");
1266 if (!iwl_legacy_is_ready_rf(priv)) {
1267 IWL_DEBUG_MAC80211(priv, "leave - RF not ready\n");
1271 if (queue >= AC_NUM) {
1272 IWL_DEBUG_MAC80211(priv, "leave - queue >= AC_NUM %d\n", queue);
1276 q = AC_NUM - 1 - queue;
1278 spin_lock_irqsave(&priv->lock, flags);
1280 for_each_context(priv, ctx) {
1281 ctx->qos_data.def_qos_parm.ac[q].cw_min =
1282 cpu_to_le16(params->cw_min);
1283 ctx->qos_data.def_qos_parm.ac[q].cw_max =
1284 cpu_to_le16(params->cw_max);
1285 ctx->qos_data.def_qos_parm.ac[q].aifsn = params->aifs;
1286 ctx->qos_data.def_qos_parm.ac[q].edca_txop =
1287 cpu_to_le16((params->txop * 32));
1289 ctx->qos_data.def_qos_parm.ac[q].reserved1 = 0;
1292 spin_unlock_irqrestore(&priv->lock, flags);
1294 IWL_DEBUG_MAC80211(priv, "leave\n");
1297 EXPORT_SYMBOL(iwl_legacy_mac_conf_tx);
1299 int iwl_legacy_mac_tx_last_beacon(struct ieee80211_hw *hw)
1301 struct iwl_priv *priv = hw->priv;
1303 return priv->ibss_manager == IWL_IBSS_MANAGER;
1305 EXPORT_SYMBOL_GPL(iwl_legacy_mac_tx_last_beacon);
1308 iwl_legacy_set_mode(struct iwl_priv *priv, struct iwl_rxon_context *ctx)
1310 iwl_legacy_connection_init_rx_config(priv, ctx);
1312 if (priv->cfg->ops->hcmd->set_rxon_chain)
1313 priv->cfg->ops->hcmd->set_rxon_chain(priv, ctx);
1315 return iwl_legacy_commit_rxon(priv, ctx);
1318 static int iwl_legacy_setup_interface(struct iwl_priv *priv,
1319 struct iwl_rxon_context *ctx)
1321 struct ieee80211_vif *vif = ctx->vif;
1324 lockdep_assert_held(&priv->mutex);
1327 * This variable will be correct only when there's just
1328 * a single context, but all code using it is for hardware
1329 * that supports only one context.
1331 priv->iw_mode = vif->type;
1333 ctx->is_active = true;
1335 err = iwl_legacy_set_mode(priv, ctx);
1337 if (!ctx->always_active)
1338 ctx->is_active = false;
1346 iwl_legacy_mac_add_interface(struct ieee80211_hw *hw, struct ieee80211_vif *vif)
1348 struct iwl_priv *priv = hw->priv;
1349 struct iwl_vif_priv *vif_priv = (void *)vif->drv_priv;
1350 struct iwl_rxon_context *tmp, *ctx = NULL;
1353 IWL_DEBUG_MAC80211(priv, "enter: type %d, addr %pM\n",
1354 vif->type, vif->addr);
1356 mutex_lock(&priv->mutex);
1358 if (!iwl_legacy_is_ready_rf(priv)) {
1359 IWL_WARN(priv, "Try to add interface when device not ready\n");
1364 for_each_context(priv, tmp) {
1365 u32 possible_modes =
1366 tmp->interface_modes | tmp->exclusive_interface_modes;
1369 /* check if this busy context is exclusive */
1370 if (tmp->exclusive_interface_modes &
1371 BIT(tmp->vif->type)) {
1378 if (!(possible_modes & BIT(vif->type)))
1381 /* have maybe usable context w/o interface */
1391 vif_priv->ctx = ctx;
1394 err = iwl_legacy_setup_interface(priv, ctx);
1399 priv->iw_mode = NL80211_IFTYPE_STATION;
1401 mutex_unlock(&priv->mutex);
1403 IWL_DEBUG_MAC80211(priv, "leave\n");
1406 EXPORT_SYMBOL(iwl_legacy_mac_add_interface);
1408 static void iwl_legacy_teardown_interface(struct iwl_priv *priv,
1409 struct ieee80211_vif *vif,
1412 struct iwl_rxon_context *ctx = iwl_legacy_rxon_ctx_from_vif(vif);
1414 lockdep_assert_held(&priv->mutex);
1416 if (priv->scan_vif == vif) {
1417 iwl_legacy_scan_cancel_timeout(priv, 200);
1418 iwl_legacy_force_scan_end(priv);
1422 iwl_legacy_set_mode(priv, ctx);
1423 if (!ctx->always_active)
1424 ctx->is_active = false;
1428 void iwl_legacy_mac_remove_interface(struct ieee80211_hw *hw,
1429 struct ieee80211_vif *vif)
1431 struct iwl_priv *priv = hw->priv;
1432 struct iwl_rxon_context *ctx = iwl_legacy_rxon_ctx_from_vif(vif);
1434 IWL_DEBUG_MAC80211(priv, "enter\n");
1436 mutex_lock(&priv->mutex);
1438 WARN_ON(ctx->vif != vif);
1441 iwl_legacy_teardown_interface(priv, vif, false);
1443 memset(priv->bssid, 0, ETH_ALEN);
1444 mutex_unlock(&priv->mutex);
1446 IWL_DEBUG_MAC80211(priv, "leave\n");
1449 EXPORT_SYMBOL(iwl_legacy_mac_remove_interface);
1451 int iwl_legacy_alloc_txq_mem(struct iwl_priv *priv)
1454 priv->txq = kzalloc(
1455 sizeof(struct iwl_tx_queue) *
1456 priv->cfg->base_params->num_of_queues,
1459 IWL_ERR(priv, "Not enough memory for txq\n");
1464 EXPORT_SYMBOL(iwl_legacy_alloc_txq_mem);
1466 void iwl_legacy_txq_mem(struct iwl_priv *priv)
1471 EXPORT_SYMBOL(iwl_legacy_txq_mem);
1473 #ifdef CONFIG_IWLWIFI_LEGACY_DEBUGFS
1475 #define IWL_TRAFFIC_DUMP_SIZE (IWL_TRAFFIC_ENTRY_SIZE * IWL_TRAFFIC_ENTRIES)
1477 void iwl_legacy_reset_traffic_log(struct iwl_priv *priv)
1479 priv->tx_traffic_idx = 0;
1480 priv->rx_traffic_idx = 0;
1481 if (priv->tx_traffic)
1482 memset(priv->tx_traffic, 0, IWL_TRAFFIC_DUMP_SIZE);
1483 if (priv->rx_traffic)
1484 memset(priv->rx_traffic, 0, IWL_TRAFFIC_DUMP_SIZE);
1487 int iwl_legacy_alloc_traffic_mem(struct iwl_priv *priv)
1489 u32 traffic_size = IWL_TRAFFIC_DUMP_SIZE;
1491 if (iwlegacy_debug_level & IWL_DL_TX) {
1492 if (!priv->tx_traffic) {
1494 kzalloc(traffic_size, GFP_KERNEL);
1495 if (!priv->tx_traffic)
1499 if (iwlegacy_debug_level & IWL_DL_RX) {
1500 if (!priv->rx_traffic) {
1502 kzalloc(traffic_size, GFP_KERNEL);
1503 if (!priv->rx_traffic)
1507 iwl_legacy_reset_traffic_log(priv);
1510 EXPORT_SYMBOL(iwl_legacy_alloc_traffic_mem);
1512 void iwl_legacy_free_traffic_mem(struct iwl_priv *priv)
1514 kfree(priv->tx_traffic);
1515 priv->tx_traffic = NULL;
1517 kfree(priv->rx_traffic);
1518 priv->rx_traffic = NULL;
1520 EXPORT_SYMBOL(iwl_legacy_free_traffic_mem);
1522 void iwl_legacy_dbg_log_tx_data_frame(struct iwl_priv *priv,
1523 u16 length, struct ieee80211_hdr *header)
1528 if (likely(!(iwlegacy_debug_level & IWL_DL_TX)))
1531 if (!priv->tx_traffic)
1534 fc = header->frame_control;
1535 if (ieee80211_is_data(fc)) {
1536 len = (length > IWL_TRAFFIC_ENTRY_SIZE)
1537 ? IWL_TRAFFIC_ENTRY_SIZE : length;
1538 memcpy((priv->tx_traffic +
1539 (priv->tx_traffic_idx * IWL_TRAFFIC_ENTRY_SIZE)),
1541 priv->tx_traffic_idx =
1542 (priv->tx_traffic_idx + 1) % IWL_TRAFFIC_ENTRIES;
1545 EXPORT_SYMBOL(iwl_legacy_dbg_log_tx_data_frame);
1547 void iwl_legacy_dbg_log_rx_data_frame(struct iwl_priv *priv,
1548 u16 length, struct ieee80211_hdr *header)
1553 if (likely(!(iwlegacy_debug_level & IWL_DL_RX)))
1556 if (!priv->rx_traffic)
1559 fc = header->frame_control;
1560 if (ieee80211_is_data(fc)) {
1561 len = (length > IWL_TRAFFIC_ENTRY_SIZE)
1562 ? IWL_TRAFFIC_ENTRY_SIZE : length;
1563 memcpy((priv->rx_traffic +
1564 (priv->rx_traffic_idx * IWL_TRAFFIC_ENTRY_SIZE)),
1566 priv->rx_traffic_idx =
1567 (priv->rx_traffic_idx + 1) % IWL_TRAFFIC_ENTRIES;
1570 EXPORT_SYMBOL(iwl_legacy_dbg_log_rx_data_frame);
1572 const char *iwl_legacy_get_mgmt_string(int cmd)
1575 IWL_CMD(MANAGEMENT_ASSOC_REQ);
1576 IWL_CMD(MANAGEMENT_ASSOC_RESP);
1577 IWL_CMD(MANAGEMENT_REASSOC_REQ);
1578 IWL_CMD(MANAGEMENT_REASSOC_RESP);
1579 IWL_CMD(MANAGEMENT_PROBE_REQ);
1580 IWL_CMD(MANAGEMENT_PROBE_RESP);
1581 IWL_CMD(MANAGEMENT_BEACON);
1582 IWL_CMD(MANAGEMENT_ATIM);
1583 IWL_CMD(MANAGEMENT_DISASSOC);
1584 IWL_CMD(MANAGEMENT_AUTH);
1585 IWL_CMD(MANAGEMENT_DEAUTH);
1586 IWL_CMD(MANAGEMENT_ACTION);
1593 const char *iwl_legacy_get_ctrl_string(int cmd)
1596 IWL_CMD(CONTROL_BACK_REQ);
1597 IWL_CMD(CONTROL_BACK);
1598 IWL_CMD(CONTROL_PSPOLL);
1599 IWL_CMD(CONTROL_RTS);
1600 IWL_CMD(CONTROL_CTS);
1601 IWL_CMD(CONTROL_ACK);
1602 IWL_CMD(CONTROL_CFEND);
1603 IWL_CMD(CONTROL_CFENDACK);
1610 void iwl_legacy_clear_traffic_stats(struct iwl_priv *priv)
1612 memset(&priv->tx_stats, 0, sizeof(struct traffic_stats));
1613 memset(&priv->rx_stats, 0, sizeof(struct traffic_stats));
1617 * if CONFIG_IWLWIFI_LEGACY_DEBUGFS defined,
1618 * iwl_legacy_update_stats function will
1619 * record all the MGMT, CTRL and DATA pkt for both TX and Rx pass
1620 * Use debugFs to display the rx/rx_statistics
1621 * if CONFIG_IWLWIFI_LEGACY_DEBUGFS not being defined, then no MGMT and CTRL
1622 * information will be recorded, but DATA pkt still will be recorded
1623 * for the reason of iwl_led.c need to control the led blinking based on
1624 * number of tx and rx data.
1628 iwl_legacy_update_stats(struct iwl_priv *priv, bool is_tx, __le16 fc, u16 len)
1630 struct traffic_stats *stats;
1633 stats = &priv->tx_stats;
1635 stats = &priv->rx_stats;
1637 if (ieee80211_is_mgmt(fc)) {
1638 switch (fc & cpu_to_le16(IEEE80211_FCTL_STYPE)) {
1639 case cpu_to_le16(IEEE80211_STYPE_ASSOC_REQ):
1640 stats->mgmt[MANAGEMENT_ASSOC_REQ]++;
1642 case cpu_to_le16(IEEE80211_STYPE_ASSOC_RESP):
1643 stats->mgmt[MANAGEMENT_ASSOC_RESP]++;
1645 case cpu_to_le16(IEEE80211_STYPE_REASSOC_REQ):
1646 stats->mgmt[MANAGEMENT_REASSOC_REQ]++;
1648 case cpu_to_le16(IEEE80211_STYPE_REASSOC_RESP):
1649 stats->mgmt[MANAGEMENT_REASSOC_RESP]++;
1651 case cpu_to_le16(IEEE80211_STYPE_PROBE_REQ):
1652 stats->mgmt[MANAGEMENT_PROBE_REQ]++;
1654 case cpu_to_le16(IEEE80211_STYPE_PROBE_RESP):
1655 stats->mgmt[MANAGEMENT_PROBE_RESP]++;
1657 case cpu_to_le16(IEEE80211_STYPE_BEACON):
1658 stats->mgmt[MANAGEMENT_BEACON]++;
1660 case cpu_to_le16(IEEE80211_STYPE_ATIM):
1661 stats->mgmt[MANAGEMENT_ATIM]++;
1663 case cpu_to_le16(IEEE80211_STYPE_DISASSOC):
1664 stats->mgmt[MANAGEMENT_DISASSOC]++;
1666 case cpu_to_le16(IEEE80211_STYPE_AUTH):
1667 stats->mgmt[MANAGEMENT_AUTH]++;
1669 case cpu_to_le16(IEEE80211_STYPE_DEAUTH):
1670 stats->mgmt[MANAGEMENT_DEAUTH]++;
1672 case cpu_to_le16(IEEE80211_STYPE_ACTION):
1673 stats->mgmt[MANAGEMENT_ACTION]++;
1676 } else if (ieee80211_is_ctl(fc)) {
1677 switch (fc & cpu_to_le16(IEEE80211_FCTL_STYPE)) {
1678 case cpu_to_le16(IEEE80211_STYPE_BACK_REQ):
1679 stats->ctrl[CONTROL_BACK_REQ]++;
1681 case cpu_to_le16(IEEE80211_STYPE_BACK):
1682 stats->ctrl[CONTROL_BACK]++;
1684 case cpu_to_le16(IEEE80211_STYPE_PSPOLL):
1685 stats->ctrl[CONTROL_PSPOLL]++;
1687 case cpu_to_le16(IEEE80211_STYPE_RTS):
1688 stats->ctrl[CONTROL_RTS]++;
1690 case cpu_to_le16(IEEE80211_STYPE_CTS):
1691 stats->ctrl[CONTROL_CTS]++;
1693 case cpu_to_le16(IEEE80211_STYPE_ACK):
1694 stats->ctrl[CONTROL_ACK]++;
1696 case cpu_to_le16(IEEE80211_STYPE_CFEND):
1697 stats->ctrl[CONTROL_CFEND]++;
1699 case cpu_to_le16(IEEE80211_STYPE_CFENDACK):
1700 stats->ctrl[CONTROL_CFENDACK]++;
1706 stats->data_bytes += len;
1709 EXPORT_SYMBOL(iwl_legacy_update_stats);
1712 static void _iwl_legacy_force_rf_reset(struct iwl_priv *priv)
1714 if (test_bit(STATUS_EXIT_PENDING, &priv->status))
1717 if (!iwl_legacy_is_any_associated(priv)) {
1718 IWL_DEBUG_SCAN(priv, "force reset rejected: not associated\n");
1722 * There is no easy and better way to force reset the radio,
1723 * the only known method is switching channel which will force to
1724 * reset and tune the radio.
1725 * Use internal short scan (single channel) operation to should
1726 * achieve this objective.
1727 * Driver should reset the radio when number of consecutive missed
1728 * beacon, or any other uCode error condition detected.
1730 IWL_DEBUG_INFO(priv, "perform radio reset.\n");
1731 iwl_legacy_internal_short_hw_scan(priv);
1735 int iwl_legacy_force_reset(struct iwl_priv *priv, int mode, bool external)
1737 struct iwl_force_reset *force_reset;
1739 if (test_bit(STATUS_EXIT_PENDING, &priv->status))
1742 if (mode >= IWL_MAX_FORCE_RESET) {
1743 IWL_DEBUG_INFO(priv, "invalid reset request.\n");
1746 force_reset = &priv->force_reset[mode];
1747 force_reset->reset_request_count++;
1749 if (force_reset->last_force_reset_jiffies &&
1750 time_after(force_reset->last_force_reset_jiffies +
1751 force_reset->reset_duration, jiffies)) {
1752 IWL_DEBUG_INFO(priv, "force reset rejected\n");
1753 force_reset->reset_reject_count++;
1757 force_reset->reset_success_count++;
1758 force_reset->last_force_reset_jiffies = jiffies;
1759 IWL_DEBUG_INFO(priv, "perform force reset (%d)\n", mode);
1762 _iwl_legacy_force_rf_reset(priv);
1766 * if the request is from external(ex: debugfs),
1767 * then always perform the request in regardless the module
1769 * if the request is from internal (uCode error or driver
1770 * detect failure), then fw_restart module parameter
1771 * need to be check before performing firmware reload
1773 if (!external && !priv->cfg->mod_params->restart_fw) {
1774 IWL_DEBUG_INFO(priv, "Cancel firmware reload based on "
1775 "module parameter setting\n");
1778 IWL_ERR(priv, "On demand firmware reload\n");
1779 /* Set the FW error flag -- cleared on iwl_down */
1780 set_bit(STATUS_FW_ERROR, &priv->status);
1781 wake_up_interruptible(&priv->wait_command_queue);
1783 * Keep the restart process from trying to send host
1784 * commands by clearing the INIT status bit
1786 clear_bit(STATUS_READY, &priv->status);
1787 queue_work(priv->workqueue, &priv->restart);
1794 iwl_legacy_mac_change_interface(struct ieee80211_hw *hw,
1795 struct ieee80211_vif *vif,
1796 enum nl80211_iftype newtype, bool newp2p)
1798 struct iwl_priv *priv = hw->priv;
1799 struct iwl_rxon_context *ctx = iwl_legacy_rxon_ctx_from_vif(vif);
1800 struct iwl_rxon_context *tmp;
1801 u32 interface_modes;
1804 newtype = ieee80211_iftype_p2p(newtype, newp2p);
1806 mutex_lock(&priv->mutex);
1808 if (!ctx->vif || !iwl_legacy_is_ready_rf(priv)) {
1810 * Huh? But wait ... this can maybe happen when
1811 * we're in the middle of a firmware restart!
1817 interface_modes = ctx->interface_modes | ctx->exclusive_interface_modes;
1819 if (!(interface_modes & BIT(newtype))) {
1824 if (ctx->exclusive_interface_modes & BIT(newtype)) {
1825 for_each_context(priv, tmp) {
1833 * The current mode switch would be exclusive, but
1834 * another context is active ... refuse the switch.
1842 iwl_legacy_teardown_interface(priv, vif, true);
1843 vif->type = newtype;
1845 err = iwl_legacy_setup_interface(priv, ctx);
1848 * We've switched internally, but submitting to the
1849 * device may have failed for some reason. Mask this
1850 * error, because otherwise mac80211 will not switch
1851 * (and set the interface type back) and we'll be
1852 * out of sync with it.
1857 mutex_unlock(&priv->mutex);
1860 EXPORT_SYMBOL(iwl_legacy_mac_change_interface);
1863 * On every watchdog tick we check (latest) time stamp. If it does not
1864 * change during timeout period and queue is not empty we reset firmware.
1866 static int iwl_legacy_check_stuck_queue(struct iwl_priv *priv, int cnt)
1868 struct iwl_tx_queue *txq = &priv->txq[cnt];
1869 struct iwl_queue *q = &txq->q;
1870 unsigned long timeout;
1873 if (q->read_ptr == q->write_ptr) {
1874 txq->time_stamp = jiffies;
1878 timeout = txq->time_stamp +
1879 msecs_to_jiffies(priv->cfg->base_params->wd_timeout);
1881 if (time_after(jiffies, timeout)) {
1882 IWL_ERR(priv, "Queue %d stuck for %u ms.\n",
1883 q->id, priv->cfg->base_params->wd_timeout);
1884 ret = iwl_legacy_force_reset(priv, IWL_FW_RESET, false);
1885 return (ret == -EAGAIN) ? 0 : 1;
1892 * Making watchdog tick be a quarter of timeout assure we will
1893 * discover the queue hung between timeout and 1.25*timeout
1895 #define IWL_WD_TICK(timeout) ((timeout) / 4)
1898 * Watchdog timer callback, we check each tx queue for stuck, if if hung
1899 * we reset the firmware. If everything is fine just rearm the timer.
1901 void iwl_legacy_bg_watchdog(unsigned long data)
1903 struct iwl_priv *priv = (struct iwl_priv *)data;
1905 unsigned long timeout;
1907 if (test_bit(STATUS_EXIT_PENDING, &priv->status))
1910 timeout = priv->cfg->base_params->wd_timeout;
1914 /* monitor and check for stuck cmd queue */
1915 if (iwl_legacy_check_stuck_queue(priv, priv->cmd_queue))
1918 /* monitor and check for other stuck queues */
1919 if (iwl_legacy_is_any_associated(priv)) {
1920 for (cnt = 0; cnt < priv->hw_params.max_txq_num; cnt++) {
1921 /* skip as we already checked the command queue */
1922 if (cnt == priv->cmd_queue)
1924 if (iwl_legacy_check_stuck_queue(priv, cnt))
1929 mod_timer(&priv->watchdog, jiffies +
1930 msecs_to_jiffies(IWL_WD_TICK(timeout)));
1932 EXPORT_SYMBOL(iwl_legacy_bg_watchdog);
1934 void iwl_legacy_setup_watchdog(struct iwl_priv *priv)
1936 unsigned int timeout = priv->cfg->base_params->wd_timeout;
1939 mod_timer(&priv->watchdog,
1940 jiffies + msecs_to_jiffies(IWL_WD_TICK(timeout)));
1942 del_timer(&priv->watchdog);
1944 EXPORT_SYMBOL(iwl_legacy_setup_watchdog);
1947 * extended beacon time format
1948 * time in usec will be changed into a 32-bit value in extended:internal format
1949 * the extended part is the beacon counts
1950 * the internal part is the time in usec within one beacon interval
1953 iwl_legacy_usecs_to_beacons(struct iwl_priv *priv,
1954 u32 usec, u32 beacon_interval)
1958 u32 interval = beacon_interval * TIME_UNIT;
1960 if (!interval || !usec)
1963 quot = (usec / interval) &
1964 (iwl_legacy_beacon_time_mask_high(priv,
1965 priv->hw_params.beacon_time_tsf_bits) >>
1966 priv->hw_params.beacon_time_tsf_bits);
1967 rem = (usec % interval) & iwl_legacy_beacon_time_mask_low(priv,
1968 priv->hw_params.beacon_time_tsf_bits);
1970 return (quot << priv->hw_params.beacon_time_tsf_bits) + rem;
1972 EXPORT_SYMBOL(iwl_legacy_usecs_to_beacons);
1974 /* base is usually what we get from ucode with each received frame,
1975 * the same as HW timer counter counting down
1977 __le32 iwl_legacy_add_beacon_time(struct iwl_priv *priv, u32 base,
1978 u32 addon, u32 beacon_interval)
1980 u32 base_low = base & iwl_legacy_beacon_time_mask_low(priv,
1981 priv->hw_params.beacon_time_tsf_bits);
1982 u32 addon_low = addon & iwl_legacy_beacon_time_mask_low(priv,
1983 priv->hw_params.beacon_time_tsf_bits);
1984 u32 interval = beacon_interval * TIME_UNIT;
1985 u32 res = (base & iwl_legacy_beacon_time_mask_high(priv,
1986 priv->hw_params.beacon_time_tsf_bits)) +
1987 (addon & iwl_legacy_beacon_time_mask_high(priv,
1988 priv->hw_params.beacon_time_tsf_bits));
1990 if (base_low > addon_low)
1991 res += base_low - addon_low;
1992 else if (base_low < addon_low) {
1993 res += interval + base_low - addon_low;
1994 res += (1 << priv->hw_params.beacon_time_tsf_bits);
1996 res += (1 << priv->hw_params.beacon_time_tsf_bits);
1998 return cpu_to_le32(res);
2000 EXPORT_SYMBOL(iwl_legacy_add_beacon_time);
2004 int iwl_legacy_pci_suspend(struct device *device)
2006 struct pci_dev *pdev = to_pci_dev(device);
2007 struct iwl_priv *priv = pci_get_drvdata(pdev);
2010 * This function is called when system goes into suspend state
2011 * mac80211 will call iwl_mac_stop() from the mac80211 suspend function
2012 * first but since iwl_mac_stop() has no knowledge of who the caller is,
2013 * it will not call apm_ops.stop() to stop the DMA operation.
2014 * Calling apm_ops.stop here to make sure we stop the DMA.
2016 iwl_legacy_apm_stop(priv);
2020 EXPORT_SYMBOL(iwl_legacy_pci_suspend);
2022 int iwl_legacy_pci_resume(struct device *device)
2024 struct pci_dev *pdev = to_pci_dev(device);
2025 struct iwl_priv *priv = pci_get_drvdata(pdev);
2026 bool hw_rfkill = false;
2029 * We disable the RETRY_TIMEOUT register (0x41) to keep
2030 * PCI Tx retries from interfering with C3 CPU state.
2032 pci_write_config_byte(pdev, PCI_CFG_RETRY_TIMEOUT, 0x00);
2034 iwl_legacy_enable_interrupts(priv);
2036 if (!(iwl_read32(priv, CSR_GP_CNTRL) &
2037 CSR_GP_CNTRL_REG_FLAG_HW_RF_KILL_SW))
2041 set_bit(STATUS_RF_KILL_HW, &priv->status);
2043 clear_bit(STATUS_RF_KILL_HW, &priv->status);
2045 wiphy_rfkill_set_hw_state(priv->hw->wiphy, hw_rfkill);
2049 EXPORT_SYMBOL(iwl_legacy_pci_resume);
2051 const struct dev_pm_ops iwl_legacy_pm_ops = {
2052 .suspend = iwl_legacy_pci_suspend,
2053 .resume = iwl_legacy_pci_resume,
2054 .freeze = iwl_legacy_pci_suspend,
2055 .thaw = iwl_legacy_pci_resume,
2056 .poweroff = iwl_legacy_pci_suspend,
2057 .restore = iwl_legacy_pci_resume,
2059 EXPORT_SYMBOL(iwl_legacy_pm_ops);
2061 #endif /* CONFIG_PM */
2064 iwl_legacy_update_qos(struct iwl_priv *priv, struct iwl_rxon_context *ctx)
2066 if (test_bit(STATUS_EXIT_PENDING, &priv->status))
2069 if (!ctx->is_active)
2072 ctx->qos_data.def_qos_parm.qos_flags = 0;
2074 if (ctx->qos_data.qos_active)
2075 ctx->qos_data.def_qos_parm.qos_flags |=
2076 QOS_PARAM_FLG_UPDATE_EDCA_MSK;
2078 if (ctx->ht.enabled)
2079 ctx->qos_data.def_qos_parm.qos_flags |= QOS_PARAM_FLG_TGN_MSK;
2081 IWL_DEBUG_QOS(priv, "send QoS cmd with Qos active=%d FLAGS=0x%X\n",
2082 ctx->qos_data.qos_active,
2083 ctx->qos_data.def_qos_parm.qos_flags);
2085 iwl_legacy_send_cmd_pdu_async(priv, ctx->qos_cmd,
2086 sizeof(struct iwl_qosparam_cmd),
2087 &ctx->qos_data.def_qos_parm, NULL);
2091 * iwl_legacy_mac_config - mac80211 config callback
2093 int iwl_legacy_mac_config(struct ieee80211_hw *hw, u32 changed)
2095 struct iwl_priv *priv = hw->priv;
2096 const struct iwl_channel_info *ch_info;
2097 struct ieee80211_conf *conf = &hw->conf;
2098 struct ieee80211_channel *channel = conf->channel;
2099 struct iwl_ht_config *ht_conf = &priv->current_ht_config;
2100 struct iwl_rxon_context *ctx;
2101 unsigned long flags = 0;
2104 int scan_active = 0;
2105 bool ht_changed[NUM_IWL_RXON_CTX] = {};
2107 if (WARN_ON(!priv->cfg->ops->legacy))
2110 mutex_lock(&priv->mutex);
2112 IWL_DEBUG_MAC80211(priv, "enter to channel %d changed 0x%X\n",
2113 channel->hw_value, changed);
2115 if (unlikely(!priv->cfg->mod_params->disable_hw_scan &&
2116 test_bit(STATUS_SCANNING, &priv->status))) {
2118 IWL_DEBUG_MAC80211(priv, "leave - scanning\n");
2121 if (changed & (IEEE80211_CONF_CHANGE_SMPS |
2122 IEEE80211_CONF_CHANGE_CHANNEL)) {
2123 /* mac80211 uses static for non-HT which is what we want */
2124 priv->current_ht_config.smps = conf->smps_mode;
2127 * Recalculate chain counts.
2129 * If monitor mode is enabled then mac80211 will
2130 * set up the SM PS mode to OFF if an HT channel is
2133 if (priv->cfg->ops->hcmd->set_rxon_chain)
2134 for_each_context(priv, ctx)
2135 priv->cfg->ops->hcmd->set_rxon_chain(priv, ctx);
2138 /* during scanning mac80211 will delay channel setting until
2139 * scan finish with changed = 0
2141 if (!changed || (changed & IEEE80211_CONF_CHANGE_CHANNEL)) {
2145 ch = channel->hw_value;
2146 ch_info = iwl_legacy_get_channel_info(priv, channel->band, ch);
2147 if (!iwl_legacy_is_channel_valid(ch_info)) {
2148 IWL_DEBUG_MAC80211(priv, "leave - invalid channel\n");
2153 spin_lock_irqsave(&priv->lock, flags);
2155 for_each_context(priv, ctx) {
2156 /* Configure HT40 channels */
2157 if (ctx->ht.enabled != conf_is_ht(conf)) {
2158 ctx->ht.enabled = conf_is_ht(conf);
2159 ht_changed[ctx->ctxid] = true;
2161 if (ctx->ht.enabled) {
2162 if (conf_is_ht40_minus(conf)) {
2163 ctx->ht.extension_chan_offset =
2164 IEEE80211_HT_PARAM_CHA_SEC_BELOW;
2165 ctx->ht.is_40mhz = true;
2166 } else if (conf_is_ht40_plus(conf)) {
2167 ctx->ht.extension_chan_offset =
2168 IEEE80211_HT_PARAM_CHA_SEC_ABOVE;
2169 ctx->ht.is_40mhz = true;
2171 ctx->ht.extension_chan_offset =
2172 IEEE80211_HT_PARAM_CHA_SEC_NONE;
2173 ctx->ht.is_40mhz = false;
2176 ctx->ht.is_40mhz = false;
2179 * Default to no protection. Protection mode will
2180 * later be set from BSS config in iwl_ht_conf
2182 ctx->ht.protection =
2183 IEEE80211_HT_OP_MODE_PROTECTION_NONE;
2185 /* if we are switching from ht to 2.4 clear flags
2186 * from any ht related info since 2.4 does not
2188 if ((le16_to_cpu(ctx->staging.channel) != ch))
2189 ctx->staging.flags = 0;
2191 iwl_legacy_set_rxon_channel(priv, channel, ctx);
2192 iwl_legacy_set_rxon_ht(priv, ht_conf);
2194 iwl_legacy_set_flags_for_band(priv, ctx, channel->band,
2198 spin_unlock_irqrestore(&priv->lock, flags);
2200 if (priv->cfg->ops->legacy->update_bcast_stations)
2202 priv->cfg->ops->legacy->update_bcast_stations(priv);
2205 /* The list of supported rates and rate mask can be different
2206 * for each band; since the band may have changed, reset
2207 * the rate mask to what mac80211 lists */
2208 iwl_legacy_set_rate(priv);
2211 if (changed & (IEEE80211_CONF_CHANGE_PS |
2212 IEEE80211_CONF_CHANGE_IDLE)) {
2213 ret = iwl_legacy_power_update_mode(priv, false);
2215 IWL_DEBUG_MAC80211(priv, "Error setting sleep level\n");
2218 if (changed & IEEE80211_CONF_CHANGE_POWER) {
2219 IWL_DEBUG_MAC80211(priv, "TX Power old=%d new=%d\n",
2220 priv->tx_power_user_lmt, conf->power_level);
2222 iwl_legacy_set_tx_power(priv, conf->power_level, false);
2225 if (!iwl_legacy_is_ready(priv)) {
2226 IWL_DEBUG_MAC80211(priv, "leave - not ready\n");
2233 for_each_context(priv, ctx) {
2234 if (memcmp(&ctx->active, &ctx->staging, sizeof(ctx->staging)))
2235 iwl_legacy_commit_rxon(priv, ctx);
2237 IWL_DEBUG_INFO(priv,
2238 "Not re-sending same RXON configuration.\n");
2239 if (ht_changed[ctx->ctxid])
2240 iwl_legacy_update_qos(priv, ctx);
2244 IWL_DEBUG_MAC80211(priv, "leave\n");
2245 mutex_unlock(&priv->mutex);
2248 EXPORT_SYMBOL(iwl_legacy_mac_config);
2250 void iwl_legacy_mac_reset_tsf(struct ieee80211_hw *hw)
2252 struct iwl_priv *priv = hw->priv;
2253 unsigned long flags;
2254 /* IBSS can only be the IWL_RXON_CTX_BSS context */
2255 struct iwl_rxon_context *ctx = &priv->contexts[IWL_RXON_CTX_BSS];
2257 if (WARN_ON(!priv->cfg->ops->legacy))
2260 mutex_lock(&priv->mutex);
2261 IWL_DEBUG_MAC80211(priv, "enter\n");
2263 spin_lock_irqsave(&priv->lock, flags);
2264 memset(&priv->current_ht_config, 0, sizeof(struct iwl_ht_config));
2265 spin_unlock_irqrestore(&priv->lock, flags);
2267 spin_lock_irqsave(&priv->lock, flags);
2269 /* new association get rid of ibss beacon skb */
2270 if (priv->beacon_skb)
2271 dev_kfree_skb(priv->beacon_skb);
2273 priv->beacon_skb = NULL;
2275 priv->timestamp = 0;
2277 spin_unlock_irqrestore(&priv->lock, flags);
2279 iwl_legacy_scan_cancel_timeout(priv, 100);
2280 if (!iwl_legacy_is_ready_rf(priv)) {
2281 IWL_DEBUG_MAC80211(priv, "leave - not ready\n");
2282 mutex_unlock(&priv->mutex);
2286 /* we are restarting association process
2287 * clear RXON_FILTER_ASSOC_MSK bit
2289 ctx->staging.filter_flags &= ~RXON_FILTER_ASSOC_MSK;
2290 iwl_legacy_commit_rxon(priv, ctx);
2292 iwl_legacy_set_rate(priv);
2294 mutex_unlock(&priv->mutex);
2296 IWL_DEBUG_MAC80211(priv, "leave\n");
2298 EXPORT_SYMBOL(iwl_legacy_mac_reset_tsf);
2300 static void iwl_legacy_ht_conf(struct iwl_priv *priv,
2301 struct ieee80211_vif *vif)
2303 struct iwl_ht_config *ht_conf = &priv->current_ht_config;
2304 struct ieee80211_sta *sta;
2305 struct ieee80211_bss_conf *bss_conf = &vif->bss_conf;
2306 struct iwl_rxon_context *ctx = iwl_legacy_rxon_ctx_from_vif(vif);
2308 IWL_DEBUG_ASSOC(priv, "enter:\n");
2310 if (!ctx->ht.enabled)
2313 ctx->ht.protection =
2314 bss_conf->ht_operation_mode & IEEE80211_HT_OP_MODE_PROTECTION;
2315 ctx->ht.non_gf_sta_present =
2316 !!(bss_conf->ht_operation_mode &
2317 IEEE80211_HT_OP_MODE_NON_GF_STA_PRSNT);
2319 ht_conf->single_chain_sufficient = false;
2321 switch (vif->type) {
2322 case NL80211_IFTYPE_STATION:
2324 sta = ieee80211_find_sta(vif, bss_conf->bssid);
2326 struct ieee80211_sta_ht_cap *ht_cap = &sta->ht_cap;
2329 maxstreams = (ht_cap->mcs.tx_params &
2330 IEEE80211_HT_MCS_TX_MAX_STREAMS_MASK)
2331 >> IEEE80211_HT_MCS_TX_MAX_STREAMS_SHIFT;
2334 if ((ht_cap->mcs.rx_mask[1] == 0) &&
2335 (ht_cap->mcs.rx_mask[2] == 0))
2336 ht_conf->single_chain_sufficient = true;
2337 if (maxstreams <= 1)
2338 ht_conf->single_chain_sufficient = true;
2341 * If at all, this can only happen through a race
2342 * when the AP disconnects us while we're still
2343 * setting up the connection, in that case mac80211
2344 * will soon tell us about that.
2346 ht_conf->single_chain_sufficient = true;
2350 case NL80211_IFTYPE_ADHOC:
2351 ht_conf->single_chain_sufficient = true;
2357 IWL_DEBUG_ASSOC(priv, "leave\n");
2360 static inline void iwl_legacy_set_no_assoc(struct iwl_priv *priv,
2361 struct ieee80211_vif *vif)
2363 struct iwl_rxon_context *ctx = iwl_legacy_rxon_ctx_from_vif(vif);
2366 * inform the ucode that there is no longer an
2367 * association and that no more packets should be
2370 ctx->staging.filter_flags &= ~RXON_FILTER_ASSOC_MSK;
2371 ctx->staging.assoc_id = 0;
2372 iwl_legacy_commit_rxon(priv, ctx);
2375 static void iwl_legacy_beacon_update(struct ieee80211_hw *hw,
2376 struct ieee80211_vif *vif)
2378 struct iwl_priv *priv = hw->priv;
2379 unsigned long flags;
2381 struct sk_buff *skb = ieee80211_beacon_get(hw, vif);
2386 IWL_DEBUG_MAC80211(priv, "enter\n");
2388 lockdep_assert_held(&priv->mutex);
2390 if (!priv->beacon_ctx) {
2391 IWL_ERR(priv, "update beacon but no beacon context!\n");
2396 spin_lock_irqsave(&priv->lock, flags);
2398 if (priv->beacon_skb)
2399 dev_kfree_skb(priv->beacon_skb);
2401 priv->beacon_skb = skb;
2403 timestamp = ((struct ieee80211_mgmt *)skb->data)->u.beacon.timestamp;
2404 priv->timestamp = le64_to_cpu(timestamp);
2406 IWL_DEBUG_MAC80211(priv, "leave\n");
2407 spin_unlock_irqrestore(&priv->lock, flags);
2409 if (!iwl_legacy_is_ready_rf(priv)) {
2410 IWL_DEBUG_MAC80211(priv, "leave - RF not ready\n");
2414 priv->cfg->ops->legacy->post_associate(priv);
2417 void iwl_legacy_mac_bss_info_changed(struct ieee80211_hw *hw,
2418 struct ieee80211_vif *vif,
2419 struct ieee80211_bss_conf *bss_conf,
2422 struct iwl_priv *priv = hw->priv;
2423 struct iwl_rxon_context *ctx = iwl_legacy_rxon_ctx_from_vif(vif);
2426 if (WARN_ON(!priv->cfg->ops->legacy))
2429 IWL_DEBUG_MAC80211(priv, "changes = 0x%X\n", changes);
2431 if (!iwl_legacy_is_alive(priv))
2434 mutex_lock(&priv->mutex);
2436 if (changes & BSS_CHANGED_QOS) {
2437 unsigned long flags;
2439 spin_lock_irqsave(&priv->lock, flags);
2440 ctx->qos_data.qos_active = bss_conf->qos;
2441 iwl_legacy_update_qos(priv, ctx);
2442 spin_unlock_irqrestore(&priv->lock, flags);
2445 if (changes & BSS_CHANGED_BEACON_ENABLED) {
2447 * the add_interface code must make sure we only ever
2448 * have a single interface that could be beaconing at
2451 if (vif->bss_conf.enable_beacon)
2452 priv->beacon_ctx = ctx;
2454 priv->beacon_ctx = NULL;
2457 if (changes & BSS_CHANGED_BSSID) {
2458 IWL_DEBUG_MAC80211(priv, "BSSID %pM\n", bss_conf->bssid);
2461 * If there is currently a HW scan going on in the
2462 * background then we need to cancel it else the RXON
2463 * below/in post_associate will fail.
2465 if (iwl_legacy_scan_cancel_timeout(priv, 100)) {
2467 "Aborted scan still in progress after 100ms\n");
2468 IWL_DEBUG_MAC80211(priv,
2469 "leaving - scan abort failed.\n");
2470 mutex_unlock(&priv->mutex);
2474 /* mac80211 only sets assoc when in STATION mode */
2475 if (vif->type == NL80211_IFTYPE_ADHOC || bss_conf->assoc) {
2476 memcpy(ctx->staging.bssid_addr,
2477 bss_conf->bssid, ETH_ALEN);
2479 /* currently needed in a few places */
2480 memcpy(priv->bssid, bss_conf->bssid, ETH_ALEN);
2482 ctx->staging.filter_flags &=
2483 ~RXON_FILTER_ASSOC_MSK;
2489 * This needs to be after setting the BSSID in case
2490 * mac80211 decides to do both changes at once because
2491 * it will invoke post_associate.
2493 if (vif->type == NL80211_IFTYPE_ADHOC && changes & BSS_CHANGED_BEACON)
2494 iwl_legacy_beacon_update(hw, vif);
2496 if (changes & BSS_CHANGED_ERP_PREAMBLE) {
2497 IWL_DEBUG_MAC80211(priv, "ERP_PREAMBLE %d\n",
2498 bss_conf->use_short_preamble);
2499 if (bss_conf->use_short_preamble)
2500 ctx->staging.flags |= RXON_FLG_SHORT_PREAMBLE_MSK;
2502 ctx->staging.flags &= ~RXON_FLG_SHORT_PREAMBLE_MSK;
2505 if (changes & BSS_CHANGED_ERP_CTS_PROT) {
2506 IWL_DEBUG_MAC80211(priv,
2507 "ERP_CTS %d\n", bss_conf->use_cts_prot);
2508 if (bss_conf->use_cts_prot &&
2509 (priv->band != IEEE80211_BAND_5GHZ))
2510 ctx->staging.flags |= RXON_FLG_TGG_PROTECT_MSK;
2512 ctx->staging.flags &= ~RXON_FLG_TGG_PROTECT_MSK;
2513 if (bss_conf->use_cts_prot)
2514 ctx->staging.flags |= RXON_FLG_SELF_CTS_EN;
2516 ctx->staging.flags &= ~RXON_FLG_SELF_CTS_EN;
2519 if (changes & BSS_CHANGED_BASIC_RATES) {
2520 /* XXX use this information
2522 * To do that, remove code from iwl_legacy_set_rate() and put something
2526 ctx->staging.ofdm_basic_rates =
2527 bss_conf->basic_rates;
2529 ctx->staging.ofdm_basic_rates =
2530 bss_conf->basic_rates >> 4;
2531 ctx->staging.cck_basic_rates =
2532 bss_conf->basic_rates & 0xF;
2536 if (changes & BSS_CHANGED_HT) {
2537 iwl_legacy_ht_conf(priv, vif);
2539 if (priv->cfg->ops->hcmd->set_rxon_chain)
2540 priv->cfg->ops->hcmd->set_rxon_chain(priv, ctx);
2543 if (changes & BSS_CHANGED_ASSOC) {
2544 IWL_DEBUG_MAC80211(priv, "ASSOC %d\n", bss_conf->assoc);
2545 if (bss_conf->assoc) {
2546 priv->timestamp = bss_conf->timestamp;
2548 if (!iwl_legacy_is_rfkill(priv))
2549 priv->cfg->ops->legacy->post_associate(priv);
2551 iwl_legacy_set_no_assoc(priv, vif);
2554 if (changes && iwl_legacy_is_associated_ctx(ctx) && bss_conf->aid) {
2555 IWL_DEBUG_MAC80211(priv, "Changes (%#x) while associated\n",
2557 ret = iwl_legacy_send_rxon_assoc(priv, ctx);
2559 /* Sync active_rxon with latest change. */
2560 memcpy((void *)&ctx->active,
2562 sizeof(struct iwl_legacy_rxon_cmd));
2566 if (changes & BSS_CHANGED_BEACON_ENABLED) {
2567 if (vif->bss_conf.enable_beacon) {
2568 memcpy(ctx->staging.bssid_addr,
2569 bss_conf->bssid, ETH_ALEN);
2570 memcpy(priv->bssid, bss_conf->bssid, ETH_ALEN);
2571 priv->cfg->ops->legacy->config_ap(priv);
2573 iwl_legacy_set_no_assoc(priv, vif);
2576 if (changes & BSS_CHANGED_IBSS) {
2577 ret = priv->cfg->ops->legacy->manage_ibss_station(priv, vif,
2578 bss_conf->ibss_joined);
2580 IWL_ERR(priv, "failed to %s IBSS station %pM\n",
2581 bss_conf->ibss_joined ? "add" : "remove",
2585 mutex_unlock(&priv->mutex);
2587 IWL_DEBUG_MAC80211(priv, "leave\n");
2589 EXPORT_SYMBOL(iwl_legacy_mac_bss_info_changed);
2591 irqreturn_t iwl_legacy_isr(int irq, void *data)
2593 struct iwl_priv *priv = data;
2594 u32 inta, inta_mask;
2596 unsigned long flags;
2600 spin_lock_irqsave(&priv->lock, flags);
2602 /* Disable (but don't clear!) interrupts here to avoid
2603 * back-to-back ISRs and sporadic interrupts from our NIC.
2604 * If we have something to service, the tasklet will re-enable ints.
2605 * If we *don't* have something, we'll re-enable before leaving here. */
2606 inta_mask = iwl_read32(priv, CSR_INT_MASK); /* just for debug */
2607 iwl_write32(priv, CSR_INT_MASK, 0x00000000);
2609 /* Discover which interrupts are active/pending */
2610 inta = iwl_read32(priv, CSR_INT);
2611 inta_fh = iwl_read32(priv, CSR_FH_INT_STATUS);
2613 /* Ignore interrupt if there's nothing in NIC to service.
2614 * This may be due to IRQ shared with another device,
2615 * or due to sporadic interrupts thrown from our NIC. */
2616 if (!inta && !inta_fh) {
2618 "Ignore interrupt, inta == 0, inta_fh == 0\n");
2622 if ((inta == 0xFFFFFFFF) || ((inta & 0xFFFFFFF0) == 0xa5a5a5a0)) {
2623 /* Hardware disappeared. It might have already raised
2625 IWL_WARN(priv, "HARDWARE GONE?? INTA == 0x%08x\n", inta);
2629 IWL_DEBUG_ISR(priv, "ISR inta 0x%08x, enabled 0x%08x, fh 0x%08x\n",
2630 inta, inta_mask, inta_fh);
2632 inta &= ~CSR_INT_BIT_SCD;
2634 /* iwl_irq_tasklet() will service interrupts and re-enable them */
2635 if (likely(inta || inta_fh))
2636 tasklet_schedule(&priv->irq_tasklet);
2639 spin_unlock_irqrestore(&priv->lock, flags);
2643 /* re-enable interrupts here since we don't have anything to service. */
2644 /* only Re-enable if diabled by irq */
2645 if (test_bit(STATUS_INT_ENABLED, &priv->status))
2646 iwl_legacy_enable_interrupts(priv);
2647 spin_unlock_irqrestore(&priv->lock, flags);
2650 EXPORT_SYMBOL(iwl_legacy_isr);
2653 * iwl_legacy_tx_cmd_protection: Set rts/cts. 3945 and 4965 only share this
2656 void iwl_legacy_tx_cmd_protection(struct iwl_priv *priv,
2657 struct ieee80211_tx_info *info,
2658 __le16 fc, __le32 *tx_flags)
2660 if (info->control.rates[0].flags & IEEE80211_TX_RC_USE_RTS_CTS) {
2661 *tx_flags |= TX_CMD_FLG_RTS_MSK;
2662 *tx_flags &= ~TX_CMD_FLG_CTS_MSK;
2663 *tx_flags |= TX_CMD_FLG_FULL_TXOP_PROT_MSK;
2665 if (!ieee80211_is_mgmt(fc))
2668 switch (fc & cpu_to_le16(IEEE80211_FCTL_STYPE)) {
2669 case cpu_to_le16(IEEE80211_STYPE_AUTH):
2670 case cpu_to_le16(IEEE80211_STYPE_DEAUTH):
2671 case cpu_to_le16(IEEE80211_STYPE_ASSOC_REQ):
2672 case cpu_to_le16(IEEE80211_STYPE_REASSOC_REQ):
2673 *tx_flags &= ~TX_CMD_FLG_RTS_MSK;
2674 *tx_flags |= TX_CMD_FLG_CTS_MSK;
2677 } else if (info->control.rates[0].flags &
2678 IEEE80211_TX_RC_USE_CTS_PROTECT) {
2679 *tx_flags &= ~TX_CMD_FLG_RTS_MSK;
2680 *tx_flags |= TX_CMD_FLG_CTS_MSK;
2681 *tx_flags |= TX_CMD_FLG_FULL_TXOP_PROT_MSK;
2684 EXPORT_SYMBOL(iwl_legacy_tx_cmd_protection);