1 /******************************************************************************
5 * Copyright(c) 2008 - 2010 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 <net/mac80211.h>
35 #include "iwl-eeprom.h"
36 #include "iwl-dev.h" /* FIXME: remove */
37 #include "iwl-debug.h"
40 #include "iwl-power.h"
42 #include "iwl-helpers.h"
45 MODULE_DESCRIPTION("iwl core");
46 MODULE_VERSION(IWLWIFI_VERSION);
47 MODULE_AUTHOR(DRV_COPYRIGHT " " DRV_AUTHOR);
48 MODULE_LICENSE("GPL");
51 * set bt_coex_active to true, uCode will do kill/defer
52 * every time the priority line is asserted (BT is sending signals on the
53 * priority line in the PCIx).
54 * set bt_coex_active to false, uCode will ignore the BT activity and
55 * perform the normal operation
57 * User might experience transmit issue on some platform due to WiFi/BT
58 * co-exist problem. The possible behaviors are:
59 * Able to scan and finding all the available AP
60 * Not able to associate with any AP
61 * On those platforms, WiFi communication can be restored by set
62 * "bt_coex_active" module parameter to "false"
64 * default: bt_coex_active = true (BT_COEX_ENABLE)
66 static bool bt_coex_active = true;
67 module_param(bt_coex_active, bool, S_IRUGO);
68 MODULE_PARM_DESC(bt_coex_active, "enable wifi/bluetooth co-exist");
70 #define IWL_DECLARE_RATE_INFO(r, s, ip, in, rp, rn, pp, np) \
71 [IWL_RATE_##r##M_INDEX] = { IWL_RATE_##r##M_PLCP, \
72 IWL_RATE_SISO_##s##M_PLCP, \
73 IWL_RATE_MIMO2_##s##M_PLCP,\
74 IWL_RATE_MIMO3_##s##M_PLCP,\
75 IWL_RATE_##r##M_IEEE, \
76 IWL_RATE_##ip##M_INDEX, \
77 IWL_RATE_##in##M_INDEX, \
78 IWL_RATE_##rp##M_INDEX, \
79 IWL_RATE_##rn##M_INDEX, \
80 IWL_RATE_##pp##M_INDEX, \
81 IWL_RATE_##np##M_INDEX }
84 EXPORT_SYMBOL(iwl_debug_level);
88 * rate, ht rate, prev rate, next rate, prev tgg rate, next tgg rate
90 * If there isn't a valid next or previous rate then INV is used which
91 * maps to IWL_RATE_INVALID
94 const struct iwl_rate_info iwl_rates[IWL_RATE_COUNT] = {
95 IWL_DECLARE_RATE_INFO(1, INV, INV, 2, INV, 2, INV, 2), /* 1mbps */
96 IWL_DECLARE_RATE_INFO(2, INV, 1, 5, 1, 5, 1, 5), /* 2mbps */
97 IWL_DECLARE_RATE_INFO(5, INV, 2, 6, 2, 11, 2, 11), /*5.5mbps */
98 IWL_DECLARE_RATE_INFO(11, INV, 9, 12, 9, 12, 5, 18), /* 11mbps */
99 IWL_DECLARE_RATE_INFO(6, 6, 5, 9, 5, 11, 5, 11), /* 6mbps */
100 IWL_DECLARE_RATE_INFO(9, 6, 6, 11, 6, 11, 5, 11), /* 9mbps */
101 IWL_DECLARE_RATE_INFO(12, 12, 11, 18, 11, 18, 11, 18), /* 12mbps */
102 IWL_DECLARE_RATE_INFO(18, 18, 12, 24, 12, 24, 11, 24), /* 18mbps */
103 IWL_DECLARE_RATE_INFO(24, 24, 18, 36, 18, 36, 18, 36), /* 24mbps */
104 IWL_DECLARE_RATE_INFO(36, 36, 24, 48, 24, 48, 24, 48), /* 36mbps */
105 IWL_DECLARE_RATE_INFO(48, 48, 36, 54, 36, 54, 36, 54), /* 48mbps */
106 IWL_DECLARE_RATE_INFO(54, 54, 48, INV, 48, INV, 48, INV),/* 54mbps */
107 IWL_DECLARE_RATE_INFO(60, 60, 48, INV, 48, INV, 48, INV),/* 60mbps */
108 /* FIXME:RS: ^^ should be INV (legacy) */
110 EXPORT_SYMBOL(iwl_rates);
112 int iwl_hwrate_to_plcp_idx(u32 rate_n_flags)
117 if (rate_n_flags & RATE_MCS_HT_MSK) {
118 idx = (rate_n_flags & 0xff);
120 if (idx >= IWL_RATE_MIMO3_6M_PLCP)
121 idx = idx - IWL_RATE_MIMO3_6M_PLCP;
122 else if (idx >= IWL_RATE_MIMO2_6M_PLCP)
123 idx = idx - IWL_RATE_MIMO2_6M_PLCP;
125 idx += IWL_FIRST_OFDM_RATE;
126 /* skip 9M not supported in ht*/
127 if (idx >= IWL_RATE_9M_INDEX)
129 if ((idx >= IWL_FIRST_OFDM_RATE) && (idx <= IWL_LAST_OFDM_RATE))
132 /* legacy rate format, search for match in table */
134 for (idx = 0; idx < ARRAY_SIZE(iwl_rates); idx++)
135 if (iwl_rates[idx].plcp == (rate_n_flags & 0xFF))
141 EXPORT_SYMBOL(iwl_hwrate_to_plcp_idx);
143 u8 iwl_toggle_tx_ant(struct iwl_priv *priv, u8 ant)
147 for (i = 0; i < RATE_ANT_NUM - 1; i++) {
148 ind = (ind + 1) < RATE_ANT_NUM ? ind + 1 : 0;
149 if (priv->hw_params.valid_tx_ant & BIT(ind))
154 EXPORT_SYMBOL(iwl_toggle_tx_ant);
156 const u8 iwl_bcast_addr[ETH_ALEN] = { 0xFF, 0xFF, 0xFF, 0xFF, 0xFF, 0xFF };
157 EXPORT_SYMBOL(iwl_bcast_addr);
160 /* This function both allocates and initializes hw and priv. */
161 struct ieee80211_hw *iwl_alloc_all(struct iwl_cfg *cfg,
162 struct ieee80211_ops *hw_ops)
164 struct iwl_priv *priv;
166 /* mac80211 allocates memory for this device instance, including
167 * space for this driver's private structure */
168 struct ieee80211_hw *hw =
169 ieee80211_alloc_hw(sizeof(struct iwl_priv), hw_ops);
171 printk(KERN_ERR "%s: Can not allocate network device\n",
182 EXPORT_SYMBOL(iwl_alloc_all);
184 void iwl_hw_detect(struct iwl_priv *priv)
186 priv->hw_rev = _iwl_read32(priv, CSR_HW_REV);
187 priv->hw_wa_rev = _iwl_read32(priv, CSR_HW_REV_WA_REG);
188 pci_read_config_byte(priv->pci_dev, PCI_REVISION_ID, &priv->rev_id);
190 EXPORT_SYMBOL(iwl_hw_detect);
195 static void iwl_update_qos(struct iwl_priv *priv)
197 if (test_bit(STATUS_EXIT_PENDING, &priv->status))
200 priv->qos_data.def_qos_parm.qos_flags = 0;
202 if (priv->qos_data.qos_active)
203 priv->qos_data.def_qos_parm.qos_flags |=
204 QOS_PARAM_FLG_UPDATE_EDCA_MSK;
206 if (priv->current_ht_config.is_ht)
207 priv->qos_data.def_qos_parm.qos_flags |= QOS_PARAM_FLG_TGN_MSK;
209 IWL_DEBUG_QOS(priv, "send QoS cmd with Qos active=%d FLAGS=0x%X\n",
210 priv->qos_data.qos_active,
211 priv->qos_data.def_qos_parm.qos_flags);
213 iwl_send_cmd_pdu_async(priv, REPLY_QOS_PARAM,
214 sizeof(struct iwl_qosparam_cmd),
215 &priv->qos_data.def_qos_parm, NULL);
218 #define MAX_BIT_RATE_40_MHZ 150 /* Mbps */
219 #define MAX_BIT_RATE_20_MHZ 72 /* Mbps */
220 static void iwlcore_init_ht_hw_capab(const struct iwl_priv *priv,
221 struct ieee80211_sta_ht_cap *ht_info,
222 enum ieee80211_band band)
224 u16 max_bit_rate = 0;
225 u8 rx_chains_num = priv->hw_params.rx_chains_num;
226 u8 tx_chains_num = priv->hw_params.tx_chains_num;
229 memset(&ht_info->mcs, 0, sizeof(ht_info->mcs));
231 ht_info->ht_supported = true;
233 if (priv->cfg->ht_greenfield_support)
234 ht_info->cap |= IEEE80211_HT_CAP_GRN_FLD;
235 ht_info->cap |= IEEE80211_HT_CAP_SGI_20;
236 max_bit_rate = MAX_BIT_RATE_20_MHZ;
237 if (priv->hw_params.ht40_channel & BIT(band)) {
238 ht_info->cap |= IEEE80211_HT_CAP_SUP_WIDTH_20_40;
239 ht_info->cap |= IEEE80211_HT_CAP_SGI_40;
240 ht_info->mcs.rx_mask[4] = 0x01;
241 max_bit_rate = MAX_BIT_RATE_40_MHZ;
244 if (priv->cfg->mod_params->amsdu_size_8K)
245 ht_info->cap |= IEEE80211_HT_CAP_MAX_AMSDU;
247 ht_info->ampdu_factor = CFG_HT_RX_AMPDU_FACTOR_DEF;
248 ht_info->ampdu_density = CFG_HT_MPDU_DENSITY_DEF;
250 ht_info->mcs.rx_mask[0] = 0xFF;
251 if (rx_chains_num >= 2)
252 ht_info->mcs.rx_mask[1] = 0xFF;
253 if (rx_chains_num >= 3)
254 ht_info->mcs.rx_mask[2] = 0xFF;
256 /* Highest supported Rx data rate */
257 max_bit_rate *= rx_chains_num;
258 WARN_ON(max_bit_rate & ~IEEE80211_HT_MCS_RX_HIGHEST_MASK);
259 ht_info->mcs.rx_highest = cpu_to_le16(max_bit_rate);
261 /* Tx MCS capabilities */
262 ht_info->mcs.tx_params = IEEE80211_HT_MCS_TX_DEFINED;
263 if (tx_chains_num != rx_chains_num) {
264 ht_info->mcs.tx_params |= IEEE80211_HT_MCS_TX_RX_DIFF;
265 ht_info->mcs.tx_params |= ((tx_chains_num - 1) <<
266 IEEE80211_HT_MCS_TX_MAX_STREAMS_SHIFT);
271 * iwlcore_init_geos - Initialize mac80211's geo/channel info based from eeprom
273 int iwlcore_init_geos(struct iwl_priv *priv)
275 struct iwl_channel_info *ch;
276 struct ieee80211_supported_band *sband;
277 struct ieee80211_channel *channels;
278 struct ieee80211_channel *geo_ch;
279 struct ieee80211_rate *rates;
282 if (priv->bands[IEEE80211_BAND_2GHZ].n_bitrates ||
283 priv->bands[IEEE80211_BAND_5GHZ].n_bitrates) {
284 IWL_DEBUG_INFO(priv, "Geography modes already initialized.\n");
285 set_bit(STATUS_GEO_CONFIGURED, &priv->status);
289 channels = kzalloc(sizeof(struct ieee80211_channel) *
290 priv->channel_count, GFP_KERNEL);
294 rates = kzalloc((sizeof(struct ieee80211_rate) * IWL_RATE_COUNT_LEGACY),
301 /* 5.2GHz channels start after the 2.4GHz channels */
302 sband = &priv->bands[IEEE80211_BAND_5GHZ];
303 sband->channels = &channels[ARRAY_SIZE(iwl_eeprom_band_1)];
305 sband->bitrates = &rates[IWL_FIRST_OFDM_RATE];
306 sband->n_bitrates = IWL_RATE_COUNT_LEGACY - IWL_FIRST_OFDM_RATE;
308 if (priv->cfg->sku & IWL_SKU_N)
309 iwlcore_init_ht_hw_capab(priv, &sband->ht_cap,
310 IEEE80211_BAND_5GHZ);
312 sband = &priv->bands[IEEE80211_BAND_2GHZ];
313 sband->channels = channels;
315 sband->bitrates = rates;
316 sband->n_bitrates = IWL_RATE_COUNT_LEGACY;
318 if (priv->cfg->sku & IWL_SKU_N)
319 iwlcore_init_ht_hw_capab(priv, &sband->ht_cap,
320 IEEE80211_BAND_2GHZ);
322 priv->ieee_channels = channels;
323 priv->ieee_rates = rates;
325 for (i = 0; i < priv->channel_count; i++) {
326 ch = &priv->channel_info[i];
328 /* FIXME: might be removed if scan is OK */
329 if (!is_channel_valid(ch))
332 if (is_channel_a_band(ch))
333 sband = &priv->bands[IEEE80211_BAND_5GHZ];
335 sband = &priv->bands[IEEE80211_BAND_2GHZ];
337 geo_ch = &sband->channels[sband->n_channels++];
339 geo_ch->center_freq =
340 ieee80211_channel_to_frequency(ch->channel);
341 geo_ch->max_power = ch->max_power_avg;
342 geo_ch->max_antenna_gain = 0xff;
343 geo_ch->hw_value = ch->channel;
345 if (is_channel_valid(ch)) {
346 if (!(ch->flags & EEPROM_CHANNEL_IBSS))
347 geo_ch->flags |= IEEE80211_CHAN_NO_IBSS;
349 if (!(ch->flags & EEPROM_CHANNEL_ACTIVE))
350 geo_ch->flags |= IEEE80211_CHAN_PASSIVE_SCAN;
352 if (ch->flags & EEPROM_CHANNEL_RADAR)
353 geo_ch->flags |= IEEE80211_CHAN_RADAR;
355 geo_ch->flags |= ch->ht40_extension_channel;
357 if (ch->max_power_avg > priv->tx_power_device_lmt)
358 priv->tx_power_device_lmt = ch->max_power_avg;
360 geo_ch->flags |= IEEE80211_CHAN_DISABLED;
363 IWL_DEBUG_INFO(priv, "Channel %d Freq=%d[%sGHz] %s flag=0x%X\n",
364 ch->channel, geo_ch->center_freq,
365 is_channel_a_band(ch) ? "5.2" : "2.4",
366 geo_ch->flags & IEEE80211_CHAN_DISABLED ?
367 "restricted" : "valid",
371 if ((priv->bands[IEEE80211_BAND_5GHZ].n_channels == 0) &&
372 priv->cfg->sku & IWL_SKU_A) {
373 IWL_INFO(priv, "Incorrectly detected BG card as ABG. "
374 "Please send your PCI ID 0x%04X:0x%04X to maintainer.\n",
375 priv->pci_dev->device,
376 priv->pci_dev->subsystem_device);
377 priv->cfg->sku &= ~IWL_SKU_A;
380 IWL_INFO(priv, "Tunable channels: %d 802.11bg, %d 802.11a channels\n",
381 priv->bands[IEEE80211_BAND_2GHZ].n_channels,
382 priv->bands[IEEE80211_BAND_5GHZ].n_channels);
384 set_bit(STATUS_GEO_CONFIGURED, &priv->status);
388 EXPORT_SYMBOL(iwlcore_init_geos);
391 * iwlcore_free_geos - undo allocations in iwlcore_init_geos
393 void iwlcore_free_geos(struct iwl_priv *priv)
395 kfree(priv->ieee_channels);
396 kfree(priv->ieee_rates);
397 clear_bit(STATUS_GEO_CONFIGURED, &priv->status);
399 EXPORT_SYMBOL(iwlcore_free_geos);
402 * iwlcore_rts_tx_cmd_flag: Set rts/cts. 3945 and 4965 only share this
405 void iwlcore_rts_tx_cmd_flag(struct ieee80211_tx_info *info,
408 if (info->control.rates[0].flags & IEEE80211_TX_RC_USE_RTS_CTS) {
409 *tx_flags |= TX_CMD_FLG_RTS_MSK;
410 *tx_flags &= ~TX_CMD_FLG_CTS_MSK;
411 } else if (info->control.rates[0].flags & IEEE80211_TX_RC_USE_CTS_PROTECT) {
412 *tx_flags &= ~TX_CMD_FLG_RTS_MSK;
413 *tx_flags |= TX_CMD_FLG_CTS_MSK;
416 EXPORT_SYMBOL(iwlcore_rts_tx_cmd_flag);
418 static bool is_single_rx_stream(struct iwl_priv *priv)
420 return priv->current_ht_config.smps == IEEE80211_SMPS_STATIC ||
421 priv->current_ht_config.single_chain_sufficient;
424 static u8 iwl_is_channel_extension(struct iwl_priv *priv,
425 enum ieee80211_band band,
426 u16 channel, u8 extension_chan_offset)
428 const struct iwl_channel_info *ch_info;
430 ch_info = iwl_get_channel_info(priv, band, channel);
431 if (!is_channel_valid(ch_info))
434 if (extension_chan_offset == IEEE80211_HT_PARAM_CHA_SEC_ABOVE)
435 return !(ch_info->ht40_extension_channel &
436 IEEE80211_CHAN_NO_HT40PLUS);
437 else if (extension_chan_offset == IEEE80211_HT_PARAM_CHA_SEC_BELOW)
438 return !(ch_info->ht40_extension_channel &
439 IEEE80211_CHAN_NO_HT40MINUS);
444 u8 iwl_is_ht40_tx_allowed(struct iwl_priv *priv,
445 struct ieee80211_sta_ht_cap *sta_ht_inf)
447 struct iwl_ht_config *ht_conf = &priv->current_ht_config;
449 if (!ht_conf->is_ht || !ht_conf->is_40mhz)
452 /* We do not check for IEEE80211_HT_CAP_SUP_WIDTH_20_40
453 * the bit will not set if it is pure 40MHz case
456 if (!sta_ht_inf->ht_supported)
459 #ifdef CONFIG_IWLWIFI_DEBUG
460 if (priv->disable_ht40)
463 return iwl_is_channel_extension(priv, priv->band,
464 le16_to_cpu(priv->staging_rxon.channel),
465 ht_conf->extension_chan_offset);
467 EXPORT_SYMBOL(iwl_is_ht40_tx_allowed);
469 static u16 iwl_adjust_beacon_interval(u16 beacon_val, u16 max_beacon_val)
472 u16 beacon_factor = 0;
474 beacon_factor = (beacon_val + max_beacon_val) / max_beacon_val;
475 new_val = beacon_val / beacon_factor;
478 new_val = max_beacon_val;
483 void iwl_setup_rxon_timing(struct iwl_priv *priv)
486 s32 interval_tm, rem;
488 struct ieee80211_conf *conf = NULL;
491 conf = ieee80211_get_hw_conf(priv->hw);
493 spin_lock_irqsave(&priv->lock, flags);
494 priv->rxon_timing.timestamp = cpu_to_le64(priv->timestamp);
495 priv->rxon_timing.listen_interval = cpu_to_le16(conf->listen_interval);
497 if (priv->iw_mode == NL80211_IFTYPE_STATION) {
498 beacon_int = priv->beacon_int;
499 priv->rxon_timing.atim_window = 0;
501 beacon_int = priv->vif->bss_conf.beacon_int;
503 /* TODO: we need to get atim_window from upper stack
504 * for now we set to 0 */
505 priv->rxon_timing.atim_window = 0;
508 beacon_int = iwl_adjust_beacon_interval(beacon_int,
509 priv->hw_params.max_beacon_itrvl * 1024);
510 priv->rxon_timing.beacon_interval = cpu_to_le16(beacon_int);
512 tsf = priv->timestamp; /* tsf is modifed by do_div: copy it */
513 interval_tm = beacon_int * 1024;
514 rem = do_div(tsf, interval_tm);
515 priv->rxon_timing.beacon_init_val = cpu_to_le32(interval_tm - rem);
517 spin_unlock_irqrestore(&priv->lock, flags);
518 IWL_DEBUG_ASSOC(priv,
519 "beacon interval %d beacon timer %d beacon tim %d\n",
520 le16_to_cpu(priv->rxon_timing.beacon_interval),
521 le32_to_cpu(priv->rxon_timing.beacon_init_val),
522 le16_to_cpu(priv->rxon_timing.atim_window));
524 EXPORT_SYMBOL(iwl_setup_rxon_timing);
526 void iwl_set_rxon_hwcrypto(struct iwl_priv *priv, int hw_decrypt)
528 struct iwl_rxon_cmd *rxon = &priv->staging_rxon;
531 rxon->filter_flags &= ~RXON_FILTER_DIS_DECRYPT_MSK;
533 rxon->filter_flags |= RXON_FILTER_DIS_DECRYPT_MSK;
536 EXPORT_SYMBOL(iwl_set_rxon_hwcrypto);
539 * iwl_check_rxon_cmd - validate RXON structure is valid
541 * NOTE: This is really only useful during development and can eventually
542 * be #ifdef'd out once the driver is stable and folks aren't actively
545 int iwl_check_rxon_cmd(struct iwl_priv *priv)
549 struct iwl_rxon_cmd *rxon = &priv->staging_rxon;
551 if (rxon->flags & RXON_FLG_BAND_24G_MSK) {
552 error |= le32_to_cpu(rxon->flags &
553 (RXON_FLG_TGJ_NARROW_BAND_MSK |
554 RXON_FLG_RADAR_DETECT_MSK));
556 IWL_WARN(priv, "check 24G fields %d | %d\n",
559 error |= (rxon->flags & RXON_FLG_SHORT_SLOT_MSK) ?
560 0 : le32_to_cpu(RXON_FLG_SHORT_SLOT_MSK);
562 IWL_WARN(priv, "check 52 fields %d | %d\n",
564 error |= le32_to_cpu(rxon->flags & RXON_FLG_CCK_MSK);
566 IWL_WARN(priv, "check 52 CCK %d | %d\n",
569 error |= (rxon->node_addr[0] | rxon->bssid_addr[0]) & 0x1;
571 IWL_WARN(priv, "check mac addr %d | %d\n", counter++, error);
573 /* make sure basic rates 6Mbps and 1Mbps are supported */
574 error |= (((rxon->ofdm_basic_rates & IWL_RATE_6M_MASK) == 0) &&
575 ((rxon->cck_basic_rates & IWL_RATE_1M_MASK) == 0));
577 IWL_WARN(priv, "check basic rate %d | %d\n", counter++, error);
579 error |= (le16_to_cpu(rxon->assoc_id) > 2007);
581 IWL_WARN(priv, "check assoc id %d | %d\n", counter++, error);
583 error |= ((rxon->flags & (RXON_FLG_CCK_MSK | RXON_FLG_SHORT_SLOT_MSK))
584 == (RXON_FLG_CCK_MSK | RXON_FLG_SHORT_SLOT_MSK));
586 IWL_WARN(priv, "check CCK and short slot %d | %d\n",
589 error |= ((rxon->flags & (RXON_FLG_CCK_MSK | RXON_FLG_AUTO_DETECT_MSK))
590 == (RXON_FLG_CCK_MSK | RXON_FLG_AUTO_DETECT_MSK));
592 IWL_WARN(priv, "check CCK & auto detect %d | %d\n",
595 error |= ((rxon->flags & (RXON_FLG_AUTO_DETECT_MSK |
596 RXON_FLG_TGG_PROTECT_MSK)) == RXON_FLG_TGG_PROTECT_MSK);
598 IWL_WARN(priv, "check TGG and auto detect %d | %d\n",
602 IWL_WARN(priv, "Tuning to channel %d\n",
603 le16_to_cpu(rxon->channel));
606 IWL_ERR(priv, "Not a valid iwl_rxon_assoc_cmd field values\n");
611 EXPORT_SYMBOL(iwl_check_rxon_cmd);
614 * iwl_full_rxon_required - check if full RXON (vs RXON_ASSOC) cmd is needed
615 * @priv: staging_rxon is compared to active_rxon
617 * If the RXON structure is changing enough to require a new tune,
618 * or is clearing the RXON_FILTER_ASSOC_MSK, then return 1 to indicate that
619 * a new tune (full RXON command, rather than RXON_ASSOC cmd) is required.
621 int iwl_full_rxon_required(struct iwl_priv *priv)
624 /* These items are only settable from the full RXON command */
625 if (!(iwl_is_associated(priv)) ||
626 compare_ether_addr(priv->staging_rxon.bssid_addr,
627 priv->active_rxon.bssid_addr) ||
628 compare_ether_addr(priv->staging_rxon.node_addr,
629 priv->active_rxon.node_addr) ||
630 compare_ether_addr(priv->staging_rxon.wlap_bssid_addr,
631 priv->active_rxon.wlap_bssid_addr) ||
632 (priv->staging_rxon.dev_type != priv->active_rxon.dev_type) ||
633 (priv->staging_rxon.channel != priv->active_rxon.channel) ||
634 (priv->staging_rxon.air_propagation !=
635 priv->active_rxon.air_propagation) ||
636 (priv->staging_rxon.ofdm_ht_single_stream_basic_rates !=
637 priv->active_rxon.ofdm_ht_single_stream_basic_rates) ||
638 (priv->staging_rxon.ofdm_ht_dual_stream_basic_rates !=
639 priv->active_rxon.ofdm_ht_dual_stream_basic_rates) ||
640 (priv->staging_rxon.ofdm_ht_triple_stream_basic_rates !=
641 priv->active_rxon.ofdm_ht_triple_stream_basic_rates) ||
642 (priv->staging_rxon.assoc_id != priv->active_rxon.assoc_id))
645 /* flags, filter_flags, ofdm_basic_rates, and cck_basic_rates can
646 * be updated with the RXON_ASSOC command -- however only some
647 * flag transitions are allowed using RXON_ASSOC */
649 /* Check if we are not switching bands */
650 if ((priv->staging_rxon.flags & RXON_FLG_BAND_24G_MSK) !=
651 (priv->active_rxon.flags & RXON_FLG_BAND_24G_MSK))
654 /* Check if we are switching association toggle */
655 if ((priv->staging_rxon.filter_flags & RXON_FILTER_ASSOC_MSK) !=
656 (priv->active_rxon.filter_flags & RXON_FILTER_ASSOC_MSK))
661 EXPORT_SYMBOL(iwl_full_rxon_required);
663 u8 iwl_rate_get_lowest_plcp(struct iwl_priv *priv)
666 * Assign the lowest rate -- should really get this from
667 * the beacon skb from mac80211.
669 if (priv->staging_rxon.flags & RXON_FLG_BAND_24G_MSK)
670 return IWL_RATE_1M_PLCP;
672 return IWL_RATE_6M_PLCP;
674 EXPORT_SYMBOL(iwl_rate_get_lowest_plcp);
676 void iwl_set_rxon_ht(struct iwl_priv *priv, struct iwl_ht_config *ht_conf)
678 struct iwl_rxon_cmd *rxon = &priv->staging_rxon;
680 if (!ht_conf->is_ht) {
681 rxon->flags &= ~(RXON_FLG_CHANNEL_MODE_MSK |
682 RXON_FLG_CTRL_CHANNEL_LOC_HI_MSK |
683 RXON_FLG_HT40_PROT_MSK |
684 RXON_FLG_HT_PROT_MSK);
688 /* FIXME: if the definition of ht_protection changed, the "translation"
689 * will be needed for rxon->flags
691 rxon->flags |= cpu_to_le32(ht_conf->ht_protection << RXON_FLG_HT_OPERATING_MODE_POS);
693 /* Set up channel bandwidth:
694 * 20 MHz only, 20/40 mixed or pure 40 if ht40 ok */
695 /* clear the HT channel mode before set the mode */
696 rxon->flags &= ~(RXON_FLG_CHANNEL_MODE_MSK |
697 RXON_FLG_CTRL_CHANNEL_LOC_HI_MSK);
698 if (iwl_is_ht40_tx_allowed(priv, NULL)) {
700 if (ht_conf->ht_protection == IEEE80211_HT_OP_MODE_PROTECTION_20MHZ) {
701 rxon->flags |= RXON_FLG_CHANNEL_MODE_PURE_40;
702 /* Note: control channel is opposite of extension channel */
703 switch (ht_conf->extension_chan_offset) {
704 case IEEE80211_HT_PARAM_CHA_SEC_ABOVE:
705 rxon->flags &= ~RXON_FLG_CTRL_CHANNEL_LOC_HI_MSK;
707 case IEEE80211_HT_PARAM_CHA_SEC_BELOW:
708 rxon->flags |= RXON_FLG_CTRL_CHANNEL_LOC_HI_MSK;
712 /* Note: control channel is opposite of extension channel */
713 switch (ht_conf->extension_chan_offset) {
714 case IEEE80211_HT_PARAM_CHA_SEC_ABOVE:
715 rxon->flags &= ~(RXON_FLG_CTRL_CHANNEL_LOC_HI_MSK);
716 rxon->flags |= RXON_FLG_CHANNEL_MODE_MIXED;
718 case IEEE80211_HT_PARAM_CHA_SEC_BELOW:
719 rxon->flags |= RXON_FLG_CTRL_CHANNEL_LOC_HI_MSK;
720 rxon->flags |= RXON_FLG_CHANNEL_MODE_MIXED;
722 case IEEE80211_HT_PARAM_CHA_SEC_NONE:
724 /* channel location only valid if in Mixed mode */
725 IWL_ERR(priv, "invalid extension channel offset\n");
730 rxon->flags |= RXON_FLG_CHANNEL_MODE_LEGACY;
733 if (priv->cfg->ops->hcmd->set_rxon_chain)
734 priv->cfg->ops->hcmd->set_rxon_chain(priv);
736 IWL_DEBUG_ASSOC(priv, "rxon flags 0x%X operation mode :0x%X "
737 "extension channel offset 0x%x\n",
738 le32_to_cpu(rxon->flags), ht_conf->ht_protection,
739 ht_conf->extension_chan_offset);
742 EXPORT_SYMBOL(iwl_set_rxon_ht);
744 #define IWL_NUM_RX_CHAINS_MULTIPLE 3
745 #define IWL_NUM_RX_CHAINS_SINGLE 2
746 #define IWL_NUM_IDLE_CHAINS_DUAL 2
747 #define IWL_NUM_IDLE_CHAINS_SINGLE 1
750 * Determine how many receiver/antenna chains to use.
752 * More provides better reception via diversity. Fewer saves power
753 * at the expense of throughput, but only when not in powersave to
756 * MIMO (dual stream) requires at least 2, but works better with 3.
757 * This does not determine *which* chains to use, just how many.
759 static int iwl_get_active_rx_chain_count(struct iwl_priv *priv)
761 /* # of Rx chains to use when expecting MIMO. */
762 if (is_single_rx_stream(priv))
763 return IWL_NUM_RX_CHAINS_SINGLE;
765 return IWL_NUM_RX_CHAINS_MULTIPLE;
769 * When we are in power saving mode, unless device support spatial
770 * multiplexing power save, use the active count for rx chain count.
772 static int iwl_get_idle_rx_chain_count(struct iwl_priv *priv, int active_cnt)
774 /* # Rx chains when idling, depending on SMPS mode */
775 switch (priv->current_ht_config.smps) {
776 case IEEE80211_SMPS_STATIC:
777 case IEEE80211_SMPS_DYNAMIC:
778 return IWL_NUM_IDLE_CHAINS_SINGLE;
779 case IEEE80211_SMPS_OFF:
782 WARN(1, "invalid SMPS mode %d",
783 priv->current_ht_config.smps);
789 static u8 iwl_count_chain_bitmap(u32 chain_bitmap)
792 res = (chain_bitmap & BIT(0)) >> 0;
793 res += (chain_bitmap & BIT(1)) >> 1;
794 res += (chain_bitmap & BIT(2)) >> 2;
795 res += (chain_bitmap & BIT(3)) >> 3;
800 * iwl_set_rxon_chain - Set up Rx chain usage in "staging" RXON image
802 * Selects how many and which Rx receivers/antennas/chains to use.
803 * This should not be used for scan command ... it puts data in wrong place.
805 void iwl_set_rxon_chain(struct iwl_priv *priv)
807 bool is_single = is_single_rx_stream(priv);
808 bool is_cam = !test_bit(STATUS_POWER_PMI, &priv->status);
809 u8 idle_rx_cnt, active_rx_cnt, valid_rx_cnt;
813 /* Tell uCode which antennas are actually connected.
814 * Before first association, we assume all antennas are connected.
815 * Just after first association, iwl_chain_noise_calibration()
816 * checks which antennas actually *are* connected. */
817 if (priv->chain_noise_data.active_chains)
818 active_chains = priv->chain_noise_data.active_chains;
820 active_chains = priv->hw_params.valid_rx_ant;
822 rx_chain = active_chains << RXON_RX_CHAIN_VALID_POS;
824 /* How many receivers should we use? */
825 active_rx_cnt = iwl_get_active_rx_chain_count(priv);
826 idle_rx_cnt = iwl_get_idle_rx_chain_count(priv, active_rx_cnt);
829 /* correct rx chain count according hw settings
830 * and chain noise calibration
832 valid_rx_cnt = iwl_count_chain_bitmap(active_chains);
833 if (valid_rx_cnt < active_rx_cnt)
834 active_rx_cnt = valid_rx_cnt;
836 if (valid_rx_cnt < idle_rx_cnt)
837 idle_rx_cnt = valid_rx_cnt;
839 rx_chain |= active_rx_cnt << RXON_RX_CHAIN_MIMO_CNT_POS;
840 rx_chain |= idle_rx_cnt << RXON_RX_CHAIN_CNT_POS;
842 priv->staging_rxon.rx_chain = cpu_to_le16(rx_chain);
844 if (!is_single && (active_rx_cnt >= IWL_NUM_RX_CHAINS_SINGLE) && is_cam)
845 priv->staging_rxon.rx_chain |= RXON_RX_CHAIN_MIMO_FORCE_MSK;
847 priv->staging_rxon.rx_chain &= ~RXON_RX_CHAIN_MIMO_FORCE_MSK;
849 IWL_DEBUG_ASSOC(priv, "rx_chain=0x%X active=%d idle=%d\n",
850 priv->staging_rxon.rx_chain,
851 active_rx_cnt, idle_rx_cnt);
853 WARN_ON(active_rx_cnt == 0 || idle_rx_cnt == 0 ||
854 active_rx_cnt < idle_rx_cnt);
856 EXPORT_SYMBOL(iwl_set_rxon_chain);
859 * iwl_set_rxon_channel - Set the phymode and channel values in staging RXON
860 * @phymode: MODE_IEEE80211A sets to 5.2GHz; all else set to 2.4GHz
861 * @channel: Any channel valid for the requested phymode
863 * In addition to setting the staging RXON, priv->phymode is also set.
865 * NOTE: Does not commit to the hardware; it sets appropriate bit fields
866 * in the staging RXON flag structure based on the phymode
868 int iwl_set_rxon_channel(struct iwl_priv *priv, struct ieee80211_channel *ch)
870 enum ieee80211_band band = ch->band;
871 u16 channel = ieee80211_frequency_to_channel(ch->center_freq);
873 if (!iwl_get_channel_info(priv, band, channel)) {
874 IWL_DEBUG_INFO(priv, "Could not set channel to %d [%d]\n",
879 if ((le16_to_cpu(priv->staging_rxon.channel) == channel) &&
880 (priv->band == band))
883 priv->staging_rxon.channel = cpu_to_le16(channel);
884 if (band == IEEE80211_BAND_5GHZ)
885 priv->staging_rxon.flags &= ~RXON_FLG_BAND_24G_MSK;
887 priv->staging_rxon.flags |= RXON_FLG_BAND_24G_MSK;
891 IWL_DEBUG_INFO(priv, "Staging channel set to %d [%d]\n", channel, band);
895 EXPORT_SYMBOL(iwl_set_rxon_channel);
897 void iwl_set_flags_for_band(struct iwl_priv *priv,
898 enum ieee80211_band band)
900 if (band == IEEE80211_BAND_5GHZ) {
901 priv->staging_rxon.flags &=
902 ~(RXON_FLG_BAND_24G_MSK | RXON_FLG_AUTO_DETECT_MSK
904 priv->staging_rxon.flags |= RXON_FLG_SHORT_SLOT_MSK;
906 /* Copied from iwl_post_associate() */
907 if (priv->assoc_capability & WLAN_CAPABILITY_SHORT_SLOT_TIME)
908 priv->staging_rxon.flags |= RXON_FLG_SHORT_SLOT_MSK;
910 priv->staging_rxon.flags &= ~RXON_FLG_SHORT_SLOT_MSK;
912 if (priv->iw_mode == NL80211_IFTYPE_ADHOC)
913 priv->staging_rxon.flags &= ~RXON_FLG_SHORT_SLOT_MSK;
915 priv->staging_rxon.flags |= RXON_FLG_BAND_24G_MSK;
916 priv->staging_rxon.flags |= RXON_FLG_AUTO_DETECT_MSK;
917 priv->staging_rxon.flags &= ~RXON_FLG_CCK_MSK;
922 * initialize rxon structure with default values from eeprom
924 void iwl_connection_init_rx_config(struct iwl_priv *priv, int mode)
926 const struct iwl_channel_info *ch_info;
928 memset(&priv->staging_rxon, 0, sizeof(priv->staging_rxon));
931 case NL80211_IFTYPE_AP:
932 priv->staging_rxon.dev_type = RXON_DEV_TYPE_AP;
935 case NL80211_IFTYPE_STATION:
936 priv->staging_rxon.dev_type = RXON_DEV_TYPE_ESS;
937 priv->staging_rxon.filter_flags = RXON_FILTER_ACCEPT_GRP_MSK;
940 case NL80211_IFTYPE_ADHOC:
941 priv->staging_rxon.dev_type = RXON_DEV_TYPE_IBSS;
942 priv->staging_rxon.flags = RXON_FLG_SHORT_PREAMBLE_MSK;
943 priv->staging_rxon.filter_flags = RXON_FILTER_BCON_AWARE_MSK |
944 RXON_FILTER_ACCEPT_GRP_MSK;
948 IWL_ERR(priv, "Unsupported interface type %d\n", mode);
953 /* TODO: Figure out when short_preamble would be set and cache from
955 if (!hw_to_local(priv->hw)->short_preamble)
956 priv->staging_rxon.flags &= ~RXON_FLG_SHORT_PREAMBLE_MSK;
958 priv->staging_rxon.flags |= RXON_FLG_SHORT_PREAMBLE_MSK;
961 ch_info = iwl_get_channel_info(priv, priv->band,
962 le16_to_cpu(priv->active_rxon.channel));
965 ch_info = &priv->channel_info[0];
967 priv->staging_rxon.channel = cpu_to_le16(ch_info->channel);
968 priv->band = ch_info->band;
970 iwl_set_flags_for_band(priv, priv->band);
972 priv->staging_rxon.ofdm_basic_rates =
973 (IWL_OFDM_RATES_MASK >> IWL_FIRST_OFDM_RATE) & 0xFF;
974 priv->staging_rxon.cck_basic_rates =
975 (IWL_CCK_RATES_MASK >> IWL_FIRST_CCK_RATE) & 0xF;
977 /* clear both MIX and PURE40 mode flag */
978 priv->staging_rxon.flags &= ~(RXON_FLG_CHANNEL_MODE_MIXED |
979 RXON_FLG_CHANNEL_MODE_PURE_40);
980 memcpy(priv->staging_rxon.node_addr, priv->mac_addr, ETH_ALEN);
981 memcpy(priv->staging_rxon.wlap_bssid_addr, priv->mac_addr, ETH_ALEN);
982 priv->staging_rxon.ofdm_ht_single_stream_basic_rates = 0xff;
983 priv->staging_rxon.ofdm_ht_dual_stream_basic_rates = 0xff;
984 priv->staging_rxon.ofdm_ht_triple_stream_basic_rates = 0xff;
986 EXPORT_SYMBOL(iwl_connection_init_rx_config);
988 static void iwl_set_rate(struct iwl_priv *priv)
990 const struct ieee80211_supported_band *hw = NULL;
991 struct ieee80211_rate *rate;
994 hw = iwl_get_hw_mode(priv, priv->band);
996 IWL_ERR(priv, "Failed to set rate: unable to get hw mode\n");
1000 priv->active_rate = 0;
1002 for (i = 0; i < hw->n_bitrates; i++) {
1003 rate = &(hw->bitrates[i]);
1004 if (rate->hw_value < IWL_RATE_COUNT_LEGACY)
1005 priv->active_rate |= (1 << rate->hw_value);
1008 IWL_DEBUG_RATE(priv, "Set active_rate = %0x\n", priv->active_rate);
1010 priv->staging_rxon.cck_basic_rates =
1011 (IWL_CCK_BASIC_RATES_MASK >> IWL_FIRST_CCK_RATE) & 0xF;
1013 priv->staging_rxon.ofdm_basic_rates =
1014 (IWL_OFDM_BASIC_RATES_MASK >> IWL_FIRST_OFDM_RATE) & 0xFF;
1017 void iwl_rx_csa(struct iwl_priv *priv, struct iwl_rx_mem_buffer *rxb)
1019 struct iwl_rx_packet *pkt = rxb_addr(rxb);
1020 struct iwl_rxon_cmd *rxon = (void *)&priv->active_rxon;
1021 struct iwl_csa_notification *csa = &(pkt->u.csa_notif);
1023 if (priv->switch_rxon.switch_in_progress) {
1024 if (!le32_to_cpu(csa->status) &&
1025 (csa->channel == priv->switch_rxon.channel)) {
1026 rxon->channel = csa->channel;
1027 priv->staging_rxon.channel = csa->channel;
1028 IWL_DEBUG_11H(priv, "CSA notif: channel %d\n",
1029 le16_to_cpu(csa->channel));
1031 IWL_ERR(priv, "CSA notif (fail) : channel %d\n",
1032 le16_to_cpu(csa->channel));
1034 priv->switch_rxon.switch_in_progress = false;
1037 EXPORT_SYMBOL(iwl_rx_csa);
1039 #ifdef CONFIG_IWLWIFI_DEBUG
1040 void iwl_print_rx_config_cmd(struct iwl_priv *priv)
1042 struct iwl_rxon_cmd *rxon = &priv->staging_rxon;
1044 IWL_DEBUG_RADIO(priv, "RX CONFIG:\n");
1045 iwl_print_hex_dump(priv, IWL_DL_RADIO, (u8 *) rxon, sizeof(*rxon));
1046 IWL_DEBUG_RADIO(priv, "u16 channel: 0x%x\n", le16_to_cpu(rxon->channel));
1047 IWL_DEBUG_RADIO(priv, "u32 flags: 0x%08X\n", le32_to_cpu(rxon->flags));
1048 IWL_DEBUG_RADIO(priv, "u32 filter_flags: 0x%08x\n",
1049 le32_to_cpu(rxon->filter_flags));
1050 IWL_DEBUG_RADIO(priv, "u8 dev_type: 0x%x\n", rxon->dev_type);
1051 IWL_DEBUG_RADIO(priv, "u8 ofdm_basic_rates: 0x%02x\n",
1052 rxon->ofdm_basic_rates);
1053 IWL_DEBUG_RADIO(priv, "u8 cck_basic_rates: 0x%02x\n", rxon->cck_basic_rates);
1054 IWL_DEBUG_RADIO(priv, "u8[6] node_addr: %pM\n", rxon->node_addr);
1055 IWL_DEBUG_RADIO(priv, "u8[6] bssid_addr: %pM\n", rxon->bssid_addr);
1056 IWL_DEBUG_RADIO(priv, "u16 assoc_id: 0x%x\n", le16_to_cpu(rxon->assoc_id));
1058 EXPORT_SYMBOL(iwl_print_rx_config_cmd);
1061 * iwl_irq_handle_error - called for HW or SW error interrupt from card
1063 void iwl_irq_handle_error(struct iwl_priv *priv)
1065 /* Set the FW error flag -- cleared on iwl_down */
1066 set_bit(STATUS_FW_ERROR, &priv->status);
1068 /* Cancel currently queued command. */
1069 clear_bit(STATUS_HCMD_ACTIVE, &priv->status);
1071 IWL_ERR(priv, "Loaded firmware version: %s\n",
1072 priv->hw->wiphy->fw_version);
1074 priv->cfg->ops->lib->dump_nic_error_log(priv);
1075 if (priv->cfg->ops->lib->dump_csr)
1076 priv->cfg->ops->lib->dump_csr(priv);
1077 if (priv->cfg->ops->lib->dump_fh)
1078 priv->cfg->ops->lib->dump_fh(priv, NULL, false);
1079 priv->cfg->ops->lib->dump_nic_event_log(priv, false, NULL, false);
1080 #ifdef CONFIG_IWLWIFI_DEBUG
1081 if (iwl_get_debug_level(priv) & IWL_DL_FW_ERRORS)
1082 iwl_print_rx_config_cmd(priv);
1085 wake_up_interruptible(&priv->wait_command_queue);
1087 /* Keep the restart process from trying to send host
1088 * commands by clearing the INIT status bit */
1089 clear_bit(STATUS_READY, &priv->status);
1091 if (!test_bit(STATUS_EXIT_PENDING, &priv->status)) {
1092 IWL_DEBUG(priv, IWL_DL_FW_ERRORS,
1093 "Restarting adapter due to uCode error.\n");
1095 if (priv->cfg->mod_params->restart_fw)
1096 queue_work(priv->workqueue, &priv->restart);
1099 EXPORT_SYMBOL(iwl_irq_handle_error);
1101 static int iwl_apm_stop_master(struct iwl_priv *priv)
1105 /* stop device's busmaster DMA activity */
1106 iwl_set_bit(priv, CSR_RESET, CSR_RESET_REG_FLAG_STOP_MASTER);
1108 ret = iwl_poll_bit(priv, CSR_RESET, CSR_RESET_REG_FLAG_MASTER_DISABLED,
1109 CSR_RESET_REG_FLAG_MASTER_DISABLED, 100);
1111 IWL_WARN(priv, "Master Disable Timed Out, 100 usec\n");
1113 IWL_DEBUG_INFO(priv, "stop master\n");
1118 void iwl_apm_stop(struct iwl_priv *priv)
1120 IWL_DEBUG_INFO(priv, "Stop card, put in low power state\n");
1122 /* Stop device's DMA activity */
1123 iwl_apm_stop_master(priv);
1125 /* Reset the entire device */
1126 iwl_set_bit(priv, CSR_RESET, CSR_RESET_REG_FLAG_SW_RESET);
1131 * Clear "initialization complete" bit to move adapter from
1132 * D0A* (powered-up Active) --> D0U* (Uninitialized) state.
1134 iwl_clear_bit(priv, CSR_GP_CNTRL, CSR_GP_CNTRL_REG_FLAG_INIT_DONE);
1136 EXPORT_SYMBOL(iwl_apm_stop);
1140 * Start up NIC's basic functionality after it has been reset
1141 * (e.g. after platform boot, or shutdown via iwl_apm_stop())
1142 * NOTE: This does not load uCode nor start the embedded processor
1144 int iwl_apm_init(struct iwl_priv *priv)
1149 IWL_DEBUG_INFO(priv, "Init card's basic functions\n");
1152 * Use "set_bit" below rather than "write", to preserve any hardware
1153 * bits already set by default after reset.
1156 /* Disable L0S exit timer (platform NMI Work/Around) */
1157 iwl_set_bit(priv, CSR_GIO_CHICKEN_BITS,
1158 CSR_GIO_CHICKEN_BITS_REG_BIT_DIS_L0S_EXIT_TIMER);
1161 * Disable L0s without affecting L1;
1162 * don't wait for ICH L0s (ICH bug W/A)
1164 iwl_set_bit(priv, CSR_GIO_CHICKEN_BITS,
1165 CSR_GIO_CHICKEN_BITS_REG_BIT_L1A_NO_L0S_RX);
1167 /* Set FH wait threshold to maximum (HW error during stress W/A) */
1168 iwl_set_bit(priv, CSR_DBG_HPET_MEM_REG, CSR_DBG_HPET_MEM_REG_VAL);
1171 * Enable HAP INTA (interrupt from management bus) to
1172 * wake device's PCI Express link L1a -> L0s
1173 * NOTE: This is no-op for 3945 (non-existant bit)
1175 iwl_set_bit(priv, CSR_HW_IF_CONFIG_REG,
1176 CSR_HW_IF_CONFIG_REG_BIT_HAP_WAKE_L1A);
1179 * HW bug W/A for instability in PCIe bus L0->L0S->L1 transition.
1180 * Check if BIOS (or OS) enabled L1-ASPM on this device.
1181 * If so (likely), disable L0S, so device moves directly L0->L1;
1182 * costs negligible amount of power savings.
1183 * If not (unlikely), enable L0S, so there is at least some
1184 * power savings, even without L1.
1186 if (priv->cfg->set_l0s) {
1187 lctl = iwl_pcie_link_ctl(priv);
1188 if ((lctl & PCI_CFG_LINK_CTRL_VAL_L1_EN) ==
1189 PCI_CFG_LINK_CTRL_VAL_L1_EN) {
1190 /* L1-ASPM enabled; disable(!) L0S */
1191 iwl_set_bit(priv, CSR_GIO_REG,
1192 CSR_GIO_REG_VAL_L0S_ENABLED);
1193 IWL_DEBUG_POWER(priv, "L1 Enabled; Disabling L0S\n");
1195 /* L1-ASPM disabled; enable(!) L0S */
1196 iwl_clear_bit(priv, CSR_GIO_REG,
1197 CSR_GIO_REG_VAL_L0S_ENABLED);
1198 IWL_DEBUG_POWER(priv, "L1 Disabled; Enabling L0S\n");
1202 /* Configure analog phase-lock-loop before activating to D0A */
1203 if (priv->cfg->pll_cfg_val)
1204 iwl_set_bit(priv, CSR_ANA_PLL_CFG, priv->cfg->pll_cfg_val);
1207 * Set "initialization complete" bit to move adapter from
1208 * D0U* --> D0A* (powered-up active) state.
1210 iwl_set_bit(priv, CSR_GP_CNTRL, CSR_GP_CNTRL_REG_FLAG_INIT_DONE);
1213 * Wait for clock stabilization; once stabilized, access to
1214 * device-internal resources is supported, e.g. iwl_write_prph()
1215 * and accesses to uCode SRAM.
1217 ret = iwl_poll_bit(priv, CSR_GP_CNTRL,
1218 CSR_GP_CNTRL_REG_FLAG_MAC_CLOCK_READY,
1219 CSR_GP_CNTRL_REG_FLAG_MAC_CLOCK_READY, 25000);
1221 IWL_DEBUG_INFO(priv, "Failed to init the card\n");
1226 * Enable DMA and BSM (if used) clocks, wait for them to stabilize.
1227 * BSM (Boostrap State Machine) is only in 3945 and 4965;
1228 * later devices (i.e. 5000 and later) have non-volatile SRAM,
1229 * and don't need BSM to restore data after power-saving sleep.
1231 * Write to "CLK_EN_REG"; "1" bits enable clocks, while "0" bits
1232 * do not disable clocks. This preserves any hardware bits already
1233 * set by default in "CLK_CTRL_REG" after reset.
1235 if (priv->cfg->use_bsm)
1236 iwl_write_prph(priv, APMG_CLK_EN_REG,
1237 APMG_CLK_VAL_DMA_CLK_RQT | APMG_CLK_VAL_BSM_CLK_RQT);
1239 iwl_write_prph(priv, APMG_CLK_EN_REG,
1240 APMG_CLK_VAL_DMA_CLK_RQT);
1243 /* Disable L1-Active */
1244 iwl_set_bits_prph(priv, APMG_PCIDEV_STT_REG,
1245 APMG_PCIDEV_STT_VAL_L1_ACT_DIS);
1250 EXPORT_SYMBOL(iwl_apm_init);
1254 void iwl_configure_filter(struct ieee80211_hw *hw,
1255 unsigned int changed_flags,
1256 unsigned int *total_flags,
1259 struct iwl_priv *priv = hw->priv;
1260 __le32 *filter_flags = &priv->staging_rxon.filter_flags;
1262 IWL_DEBUG_MAC80211(priv, "Enter: changed: 0x%x, total: 0x%x\n",
1263 changed_flags, *total_flags);
1265 if (changed_flags & (FIF_OTHER_BSS | FIF_PROMISC_IN_BSS)) {
1266 if (*total_flags & (FIF_OTHER_BSS | FIF_PROMISC_IN_BSS))
1267 *filter_flags |= RXON_FILTER_PROMISC_MSK;
1269 *filter_flags &= ~RXON_FILTER_PROMISC_MSK;
1271 if (changed_flags & FIF_ALLMULTI) {
1272 if (*total_flags & FIF_ALLMULTI)
1273 *filter_flags |= RXON_FILTER_ACCEPT_GRP_MSK;
1275 *filter_flags &= ~RXON_FILTER_ACCEPT_GRP_MSK;
1277 if (changed_flags & FIF_CONTROL) {
1278 if (*total_flags & FIF_CONTROL)
1279 *filter_flags |= RXON_FILTER_CTL2HOST_MSK;
1281 *filter_flags &= ~RXON_FILTER_CTL2HOST_MSK;
1283 if (changed_flags & FIF_BCN_PRBRESP_PROMISC) {
1284 if (*total_flags & FIF_BCN_PRBRESP_PROMISC)
1285 *filter_flags |= RXON_FILTER_BCON_AWARE_MSK;
1287 *filter_flags &= ~RXON_FILTER_BCON_AWARE_MSK;
1290 /* We avoid iwl_commit_rxon here to commit the new filter flags
1291 * since mac80211 will call ieee80211_hw_config immediately.
1292 * (mc_list is not supported at this time). Otherwise, we need to
1293 * queue a background iwl_commit_rxon work.
1296 *total_flags &= FIF_OTHER_BSS | FIF_ALLMULTI | FIF_PROMISC_IN_BSS |
1297 FIF_BCN_PRBRESP_PROMISC | FIF_CONTROL;
1299 EXPORT_SYMBOL(iwl_configure_filter);
1301 int iwl_set_hw_params(struct iwl_priv *priv)
1303 priv->hw_params.max_rxq_size = RX_QUEUE_SIZE;
1304 priv->hw_params.max_rxq_log = RX_QUEUE_SIZE_LOG;
1305 if (priv->cfg->mod_params->amsdu_size_8K)
1306 priv->hw_params.rx_page_order = get_order(IWL_RX_BUF_SIZE_8K);
1308 priv->hw_params.rx_page_order = get_order(IWL_RX_BUF_SIZE_4K);
1310 priv->hw_params.max_beacon_itrvl = IWL_MAX_UCODE_BEACON_INTERVAL;
1312 if (priv->cfg->mod_params->disable_11n)
1313 priv->cfg->sku &= ~IWL_SKU_N;
1315 /* Device-specific setup */
1316 return priv->cfg->ops->lib->set_hw_params(priv);
1318 EXPORT_SYMBOL(iwl_set_hw_params);
1320 int iwl_set_tx_power(struct iwl_priv *priv, s8 tx_power, bool force)
1323 s8 prev_tx_power = priv->tx_power_user_lmt;
1325 if (tx_power < IWLAGN_TX_POWER_TARGET_POWER_MIN) {
1327 "Requested user TXPOWER %d below lower limit %d.\n",
1329 IWLAGN_TX_POWER_TARGET_POWER_MIN);
1333 if (tx_power > priv->tx_power_device_lmt) {
1335 "Requested user TXPOWER %d above upper limit %d.\n",
1336 tx_power, priv->tx_power_device_lmt);
1340 if (priv->tx_power_user_lmt != tx_power)
1343 /* if nic is not up don't send command */
1344 if (iwl_is_ready_rf(priv)) {
1345 priv->tx_power_user_lmt = tx_power;
1346 if (force && priv->cfg->ops->lib->send_tx_power)
1347 ret = priv->cfg->ops->lib->send_tx_power(priv);
1348 else if (!priv->cfg->ops->lib->send_tx_power)
1351 * if fail to set tx_power, restore the orig. tx power
1354 priv->tx_power_user_lmt = prev_tx_power;
1358 * Even this is an async host command, the command
1359 * will always report success from uCode
1360 * So once driver can placing the command into the queue
1361 * successfully, driver can use priv->tx_power_user_lmt
1362 * to reflect the current tx power
1366 EXPORT_SYMBOL(iwl_set_tx_power);
1368 irqreturn_t iwl_isr_legacy(int irq, void *data)
1370 struct iwl_priv *priv = data;
1371 u32 inta, inta_mask;
1373 unsigned long flags;
1377 spin_lock_irqsave(&priv->lock, flags);
1379 /* Disable (but don't clear!) interrupts here to avoid
1380 * back-to-back ISRs and sporadic interrupts from our NIC.
1381 * If we have something to service, the tasklet will re-enable ints.
1382 * If we *don't* have something, we'll re-enable before leaving here. */
1383 inta_mask = iwl_read32(priv, CSR_INT_MASK); /* just for debug */
1384 iwl_write32(priv, CSR_INT_MASK, 0x00000000);
1386 /* Discover which interrupts are active/pending */
1387 inta = iwl_read32(priv, CSR_INT);
1388 inta_fh = iwl_read32(priv, CSR_FH_INT_STATUS);
1390 /* Ignore interrupt if there's nothing in NIC to service.
1391 * This may be due to IRQ shared with another device,
1392 * or due to sporadic interrupts thrown from our NIC. */
1393 if (!inta && !inta_fh) {
1394 IWL_DEBUG_ISR(priv, "Ignore interrupt, inta == 0, inta_fh == 0\n");
1398 if ((inta == 0xFFFFFFFF) || ((inta & 0xFFFFFFF0) == 0xa5a5a5a0)) {
1399 /* Hardware disappeared. It might have already raised
1401 IWL_WARN(priv, "HARDWARE GONE?? INTA == 0x%08x\n", inta);
1405 IWL_DEBUG_ISR(priv, "ISR inta 0x%08x, enabled 0x%08x, fh 0x%08x\n",
1406 inta, inta_mask, inta_fh);
1408 inta &= ~CSR_INT_BIT_SCD;
1410 /* iwl_irq_tasklet() will service interrupts and re-enable them */
1411 if (likely(inta || inta_fh))
1412 tasklet_schedule(&priv->irq_tasklet);
1415 spin_unlock_irqrestore(&priv->lock, flags);
1419 /* re-enable interrupts here since we don't have anything to service. */
1420 /* only Re-enable if diabled by irq */
1421 if (test_bit(STATUS_INT_ENABLED, &priv->status))
1422 iwl_enable_interrupts(priv);
1423 spin_unlock_irqrestore(&priv->lock, flags);
1426 EXPORT_SYMBOL(iwl_isr_legacy);
1428 void iwl_send_bt_config(struct iwl_priv *priv)
1430 struct iwl_bt_cmd bt_cmd = {
1431 .lead_time = BT_LEAD_TIME_DEF,
1432 .max_kill = BT_MAX_KILL_DEF,
1437 if (!bt_coex_active)
1438 bt_cmd.flags = BT_COEX_DISABLE;
1440 bt_cmd.flags = BT_COEX_ENABLE;
1442 IWL_DEBUG_INFO(priv, "BT coex %s\n",
1443 (bt_cmd.flags == BT_COEX_DISABLE) ? "disable" : "active");
1445 if (iwl_send_cmd_pdu(priv, REPLY_BT_CONFIG,
1446 sizeof(struct iwl_bt_cmd), &bt_cmd))
1447 IWL_ERR(priv, "failed to send BT Coex Config\n");
1449 EXPORT_SYMBOL(iwl_send_bt_config);
1451 int iwl_send_statistics_request(struct iwl_priv *priv, u8 flags, bool clear)
1453 struct iwl_statistics_cmd statistics_cmd = {
1454 .configuration_flags =
1455 clear ? IWL_STATS_CONF_CLEAR_STATS : 0,
1458 if (flags & CMD_ASYNC)
1459 return iwl_send_cmd_pdu_async(priv, REPLY_STATISTICS_CMD,
1460 sizeof(struct iwl_statistics_cmd),
1461 &statistics_cmd, NULL);
1463 return iwl_send_cmd_pdu(priv, REPLY_STATISTICS_CMD,
1464 sizeof(struct iwl_statistics_cmd),
1467 EXPORT_SYMBOL(iwl_send_statistics_request);
1470 * iwl_verify_inst_sparse - verify runtime uCode image in card vs. host,
1471 * using sample data 100 bytes apart. If these sample points are good,
1472 * it's a pretty good bet that everything between them is good, too.
1474 static int iwlcore_verify_inst_sparse(struct iwl_priv *priv, __le32 *image, u32 len)
1481 IWL_DEBUG_INFO(priv, "ucode inst image size is %u\n", len);
1483 for (i = 0; i < len; i += 100, image += 100/sizeof(u32)) {
1484 /* read data comes through single port, auto-incr addr */
1485 /* NOTE: Use the debugless read so we don't flood kernel log
1486 * if IWL_DL_IO is set */
1487 iwl_write_direct32(priv, HBUS_TARG_MEM_RADDR,
1488 i + IWL49_RTC_INST_LOWER_BOUND);
1489 val = _iwl_read_direct32(priv, HBUS_TARG_MEM_RDAT);
1490 if (val != le32_to_cpu(*image)) {
1502 * iwlcore_verify_inst_full - verify runtime uCode image in card vs. host,
1503 * looking at all data.
1505 static int iwl_verify_inst_full(struct iwl_priv *priv, __le32 *image,
1513 IWL_DEBUG_INFO(priv, "ucode inst image size is %u\n", len);
1515 iwl_write_direct32(priv, HBUS_TARG_MEM_RADDR,
1516 IWL49_RTC_INST_LOWER_BOUND);
1519 for (; len > 0; len -= sizeof(u32), image++) {
1520 /* read data comes through single port, auto-incr addr */
1521 /* NOTE: Use the debugless read so we don't flood kernel log
1522 * if IWL_DL_IO is set */
1523 val = _iwl_read_direct32(priv, HBUS_TARG_MEM_RDAT);
1524 if (val != le32_to_cpu(*image)) {
1525 IWL_ERR(priv, "uCode INST section is invalid at "
1526 "offset 0x%x, is 0x%x, s/b 0x%x\n",
1527 save_len - len, val, le32_to_cpu(*image));
1536 IWL_DEBUG_INFO(priv,
1537 "ucode image in INSTRUCTION memory is good\n");
1543 * iwl_verify_ucode - determine which instruction image is in SRAM,
1544 * and verify its contents
1546 int iwl_verify_ucode(struct iwl_priv *priv)
1553 image = (__le32 *)priv->ucode_boot.v_addr;
1554 len = priv->ucode_boot.len;
1555 ret = iwlcore_verify_inst_sparse(priv, image, len);
1557 IWL_DEBUG_INFO(priv, "Bootstrap uCode is good in inst SRAM\n");
1561 /* Try initialize */
1562 image = (__le32 *)priv->ucode_init.v_addr;
1563 len = priv->ucode_init.len;
1564 ret = iwlcore_verify_inst_sparse(priv, image, len);
1566 IWL_DEBUG_INFO(priv, "Initialize uCode is good in inst SRAM\n");
1570 /* Try runtime/protocol */
1571 image = (__le32 *)priv->ucode_code.v_addr;
1572 len = priv->ucode_code.len;
1573 ret = iwlcore_verify_inst_sparse(priv, image, len);
1575 IWL_DEBUG_INFO(priv, "Runtime uCode is good in inst SRAM\n");
1579 IWL_ERR(priv, "NO VALID UCODE IMAGE IN INSTRUCTION SRAM!!\n");
1581 /* Since nothing seems to match, show first several data entries in
1582 * instruction SRAM, so maybe visual inspection will give a clue.
1583 * Selection of bootstrap image (vs. other images) is arbitrary. */
1584 image = (__le32 *)priv->ucode_boot.v_addr;
1585 len = priv->ucode_boot.len;
1586 ret = iwl_verify_inst_full(priv, image, len);
1590 EXPORT_SYMBOL(iwl_verify_ucode);
1593 void iwl_rf_kill_ct_config(struct iwl_priv *priv)
1595 struct iwl_ct_kill_config cmd;
1596 struct iwl_ct_kill_throttling_config adv_cmd;
1597 unsigned long flags;
1600 spin_lock_irqsave(&priv->lock, flags);
1601 iwl_write32(priv, CSR_UCODE_DRV_GP1_CLR,
1602 CSR_UCODE_DRV_GP1_REG_BIT_CT_KILL_EXIT);
1603 spin_unlock_irqrestore(&priv->lock, flags);
1604 priv->thermal_throttle.ct_kill_toggle = false;
1606 if (priv->cfg->support_ct_kill_exit) {
1607 adv_cmd.critical_temperature_enter =
1608 cpu_to_le32(priv->hw_params.ct_kill_threshold);
1609 adv_cmd.critical_temperature_exit =
1610 cpu_to_le32(priv->hw_params.ct_kill_exit_threshold);
1612 ret = iwl_send_cmd_pdu(priv, REPLY_CT_KILL_CONFIG_CMD,
1613 sizeof(adv_cmd), &adv_cmd);
1615 IWL_ERR(priv, "REPLY_CT_KILL_CONFIG_CMD failed\n");
1617 IWL_DEBUG_INFO(priv, "REPLY_CT_KILL_CONFIG_CMD "
1619 "critical temperature enter is %d,"
1621 priv->hw_params.ct_kill_threshold,
1622 priv->hw_params.ct_kill_exit_threshold);
1624 cmd.critical_temperature_R =
1625 cpu_to_le32(priv->hw_params.ct_kill_threshold);
1627 ret = iwl_send_cmd_pdu(priv, REPLY_CT_KILL_CONFIG_CMD,
1630 IWL_ERR(priv, "REPLY_CT_KILL_CONFIG_CMD failed\n");
1632 IWL_DEBUG_INFO(priv, "REPLY_CT_KILL_CONFIG_CMD "
1634 "critical temperature is %d\n",
1635 priv->hw_params.ct_kill_threshold);
1638 EXPORT_SYMBOL(iwl_rf_kill_ct_config);
1644 * Use: Sets the device's internal card state to enable, disable, or halt
1646 * When in the 'enable' state the card operates as normal.
1647 * When in the 'disable' state, the card enters into a low power mode.
1648 * When in the 'halt' state, the card is shut down and must be fully
1649 * restarted to come back on.
1651 int iwl_send_card_state(struct iwl_priv *priv, u32 flags, u8 meta_flag)
1653 struct iwl_host_cmd cmd = {
1654 .id = REPLY_CARD_STATE_CMD,
1660 return iwl_send_cmd(priv, &cmd);
1663 void iwl_rx_pm_sleep_notif(struct iwl_priv *priv,
1664 struct iwl_rx_mem_buffer *rxb)
1666 #ifdef CONFIG_IWLWIFI_DEBUG
1667 struct iwl_rx_packet *pkt = rxb_addr(rxb);
1668 struct iwl_sleep_notification *sleep = &(pkt->u.sleep_notif);
1669 IWL_DEBUG_RX(priv, "sleep mode: %d, src: %d\n",
1670 sleep->pm_sleep_mode, sleep->pm_wakeup_src);
1673 EXPORT_SYMBOL(iwl_rx_pm_sleep_notif);
1675 void iwl_rx_pm_debug_statistics_notif(struct iwl_priv *priv,
1676 struct iwl_rx_mem_buffer *rxb)
1678 struct iwl_rx_packet *pkt = rxb_addr(rxb);
1679 u32 len = le32_to_cpu(pkt->len_n_flags) & FH_RSCSR_FRAME_SIZE_MSK;
1680 IWL_DEBUG_RADIO(priv, "Dumping %d bytes of unhandled "
1681 "notification for %s:\n", len,
1682 get_cmd_string(pkt->hdr.cmd));
1683 iwl_print_hex_dump(priv, IWL_DL_RADIO, pkt->u.raw, len);
1685 EXPORT_SYMBOL(iwl_rx_pm_debug_statistics_notif);
1687 void iwl_rx_reply_error(struct iwl_priv *priv,
1688 struct iwl_rx_mem_buffer *rxb)
1690 struct iwl_rx_packet *pkt = rxb_addr(rxb);
1692 IWL_ERR(priv, "Error Reply type 0x%08X cmd %s (0x%02X) "
1693 "seq 0x%04X ser 0x%08X\n",
1694 le32_to_cpu(pkt->u.err_resp.error_type),
1695 get_cmd_string(pkt->u.err_resp.cmd_id),
1696 pkt->u.err_resp.cmd_id,
1697 le16_to_cpu(pkt->u.err_resp.bad_cmd_seq_num),
1698 le32_to_cpu(pkt->u.err_resp.error_info));
1700 EXPORT_SYMBOL(iwl_rx_reply_error);
1702 void iwl_clear_isr_stats(struct iwl_priv *priv)
1704 memset(&priv->isr_stats, 0, sizeof(priv->isr_stats));
1707 int iwl_mac_conf_tx(struct ieee80211_hw *hw, u16 queue,
1708 const struct ieee80211_tx_queue_params *params)
1710 struct iwl_priv *priv = hw->priv;
1711 unsigned long flags;
1714 IWL_DEBUG_MAC80211(priv, "enter\n");
1716 if (!iwl_is_ready_rf(priv)) {
1717 IWL_DEBUG_MAC80211(priv, "leave - RF not ready\n");
1721 if (queue >= AC_NUM) {
1722 IWL_DEBUG_MAC80211(priv, "leave - queue >= AC_NUM %d\n", queue);
1726 q = AC_NUM - 1 - queue;
1728 spin_lock_irqsave(&priv->lock, flags);
1730 priv->qos_data.def_qos_parm.ac[q].cw_min = cpu_to_le16(params->cw_min);
1731 priv->qos_data.def_qos_parm.ac[q].cw_max = cpu_to_le16(params->cw_max);
1732 priv->qos_data.def_qos_parm.ac[q].aifsn = params->aifs;
1733 priv->qos_data.def_qos_parm.ac[q].edca_txop =
1734 cpu_to_le16((params->txop * 32));
1736 priv->qos_data.def_qos_parm.ac[q].reserved1 = 0;
1738 spin_unlock_irqrestore(&priv->lock, flags);
1740 IWL_DEBUG_MAC80211(priv, "leave\n");
1743 EXPORT_SYMBOL(iwl_mac_conf_tx);
1745 static void iwl_ht_conf(struct iwl_priv *priv,
1746 struct ieee80211_bss_conf *bss_conf)
1748 struct iwl_ht_config *ht_conf = &priv->current_ht_config;
1749 struct ieee80211_sta *sta;
1751 IWL_DEBUG_MAC80211(priv, "enter:\n");
1753 if (!ht_conf->is_ht)
1756 ht_conf->ht_protection =
1757 bss_conf->ht_operation_mode & IEEE80211_HT_OP_MODE_PROTECTION;
1758 ht_conf->non_GF_STA_present =
1759 !!(bss_conf->ht_operation_mode & IEEE80211_HT_OP_MODE_NON_GF_STA_PRSNT);
1761 ht_conf->single_chain_sufficient = false;
1763 switch (priv->iw_mode) {
1764 case NL80211_IFTYPE_STATION:
1766 sta = ieee80211_find_sta(priv->vif, priv->bssid);
1768 struct ieee80211_sta_ht_cap *ht_cap = &sta->ht_cap;
1771 maxstreams = (ht_cap->mcs.tx_params &
1772 IEEE80211_HT_MCS_TX_MAX_STREAMS_MASK)
1773 >> IEEE80211_HT_MCS_TX_MAX_STREAMS_SHIFT;
1776 if ((ht_cap->mcs.rx_mask[1] == 0) &&
1777 (ht_cap->mcs.rx_mask[2] == 0))
1778 ht_conf->single_chain_sufficient = true;
1779 if (maxstreams <= 1)
1780 ht_conf->single_chain_sufficient = true;
1783 * If at all, this can only happen through a race
1784 * when the AP disconnects us while we're still
1785 * setting up the connection, in that case mac80211
1786 * will soon tell us about that.
1788 ht_conf->single_chain_sufficient = true;
1792 case NL80211_IFTYPE_ADHOC:
1793 ht_conf->single_chain_sufficient = true;
1799 IWL_DEBUG_MAC80211(priv, "leave\n");
1802 static inline void iwl_set_no_assoc(struct iwl_priv *priv)
1805 iwl_led_disassociate(priv);
1807 * inform the ucode that there is no longer an
1808 * association and that no more packets should be
1811 priv->staging_rxon.filter_flags &=
1812 ~RXON_FILTER_ASSOC_MSK;
1813 priv->staging_rxon.assoc_id = 0;
1814 iwlcore_commit_rxon(priv);
1817 void iwl_bss_info_changed(struct ieee80211_hw *hw,
1818 struct ieee80211_vif *vif,
1819 struct ieee80211_bss_conf *bss_conf,
1822 struct iwl_priv *priv = hw->priv;
1825 IWL_DEBUG_MAC80211(priv, "changes = 0x%X\n", changes);
1827 if (!iwl_is_alive(priv))
1830 mutex_lock(&priv->mutex);
1832 if (changes & BSS_CHANGED_BEACON && vif->type == NL80211_IFTYPE_AP) {
1833 dev_kfree_skb(priv->ibss_beacon);
1834 priv->ibss_beacon = ieee80211_beacon_get(hw, vif);
1837 if (changes & BSS_CHANGED_BEACON_INT) {
1838 priv->beacon_int = bss_conf->beacon_int;
1839 /* TODO: in AP mode, do something to make this take effect */
1842 if (changes & BSS_CHANGED_BSSID) {
1843 IWL_DEBUG_MAC80211(priv, "BSSID %pM\n", bss_conf->bssid);
1846 * If there is currently a HW scan going on in the
1847 * background then we need to cancel it else the RXON
1848 * below/in post_associate will fail.
1850 if (iwl_scan_cancel_timeout(priv, 100)) {
1851 IWL_WARN(priv, "Aborted scan still in progress after 100ms\n");
1852 IWL_DEBUG_MAC80211(priv, "leaving - scan abort failed.\n");
1853 mutex_unlock(&priv->mutex);
1857 /* mac80211 only sets assoc when in STATION mode */
1858 if (vif->type == NL80211_IFTYPE_ADHOC || bss_conf->assoc) {
1859 memcpy(priv->staging_rxon.bssid_addr,
1860 bss_conf->bssid, ETH_ALEN);
1862 /* currently needed in a few places */
1863 memcpy(priv->bssid, bss_conf->bssid, ETH_ALEN);
1865 priv->staging_rxon.filter_flags &=
1866 ~RXON_FILTER_ASSOC_MSK;
1872 * This needs to be after setting the BSSID in case
1873 * mac80211 decides to do both changes at once because
1874 * it will invoke post_associate.
1876 if (vif->type == NL80211_IFTYPE_ADHOC &&
1877 changes & BSS_CHANGED_BEACON) {
1878 struct sk_buff *beacon = ieee80211_beacon_get(hw, vif);
1881 iwl_mac_beacon_update(hw, beacon);
1884 if (changes & BSS_CHANGED_ERP_PREAMBLE) {
1885 IWL_DEBUG_MAC80211(priv, "ERP_PREAMBLE %d\n",
1886 bss_conf->use_short_preamble);
1887 if (bss_conf->use_short_preamble)
1888 priv->staging_rxon.flags |= RXON_FLG_SHORT_PREAMBLE_MSK;
1890 priv->staging_rxon.flags &= ~RXON_FLG_SHORT_PREAMBLE_MSK;
1893 if (changes & BSS_CHANGED_ERP_CTS_PROT) {
1894 IWL_DEBUG_MAC80211(priv, "ERP_CTS %d\n", bss_conf->use_cts_prot);
1895 if (bss_conf->use_cts_prot && (priv->band != IEEE80211_BAND_5GHZ))
1896 priv->staging_rxon.flags |= RXON_FLG_TGG_PROTECT_MSK;
1898 priv->staging_rxon.flags &= ~RXON_FLG_TGG_PROTECT_MSK;
1901 if (changes & BSS_CHANGED_BASIC_RATES) {
1902 /* XXX use this information
1904 * To do that, remove code from iwl_set_rate() and put something
1908 priv->staging_rxon.ofdm_basic_rates =
1909 bss_conf->basic_rates;
1911 priv->staging_rxon.ofdm_basic_rates =
1912 bss_conf->basic_rates >> 4;
1913 priv->staging_rxon.cck_basic_rates =
1914 bss_conf->basic_rates & 0xF;
1918 if (changes & BSS_CHANGED_HT) {
1919 iwl_ht_conf(priv, bss_conf);
1921 if (priv->cfg->ops->hcmd->set_rxon_chain)
1922 priv->cfg->ops->hcmd->set_rxon_chain(priv);
1925 if (changes & BSS_CHANGED_ASSOC) {
1926 IWL_DEBUG_MAC80211(priv, "ASSOC %d\n", bss_conf->assoc);
1927 if (bss_conf->assoc) {
1928 priv->assoc_id = bss_conf->aid;
1929 priv->beacon_int = bss_conf->beacon_int;
1930 priv->timestamp = bss_conf->timestamp;
1931 priv->assoc_capability = bss_conf->assoc_capability;
1933 iwl_led_associate(priv);
1935 if (!iwl_is_rfkill(priv))
1936 priv->cfg->ops->lib->post_associate(priv);
1938 iwl_set_no_assoc(priv);
1941 if (changes && iwl_is_associated(priv) && priv->assoc_id) {
1942 IWL_DEBUG_MAC80211(priv, "Changes (%#x) while associated\n",
1944 ret = iwl_send_rxon_assoc(priv);
1946 /* Sync active_rxon with latest change. */
1947 memcpy((void *)&priv->active_rxon,
1948 &priv->staging_rxon,
1949 sizeof(struct iwl_rxon_cmd));
1953 if (changes & BSS_CHANGED_BEACON_ENABLED) {
1954 if (vif->bss_conf.enable_beacon) {
1955 memcpy(priv->staging_rxon.bssid_addr,
1956 bss_conf->bssid, ETH_ALEN);
1957 memcpy(priv->bssid, bss_conf->bssid, ETH_ALEN);
1958 iwlcore_config_ap(priv);
1960 iwl_set_no_assoc(priv);
1963 mutex_unlock(&priv->mutex);
1965 IWL_DEBUG_MAC80211(priv, "leave\n");
1967 EXPORT_SYMBOL(iwl_bss_info_changed);
1969 int iwl_mac_beacon_update(struct ieee80211_hw *hw, struct sk_buff *skb)
1971 struct iwl_priv *priv = hw->priv;
1972 unsigned long flags;
1975 IWL_DEBUG_MAC80211(priv, "enter\n");
1977 if (!iwl_is_ready_rf(priv)) {
1978 IWL_DEBUG_MAC80211(priv, "leave - RF not ready\n");
1982 spin_lock_irqsave(&priv->lock, flags);
1984 if (priv->ibss_beacon)
1985 dev_kfree_skb(priv->ibss_beacon);
1987 priv->ibss_beacon = skb;
1990 timestamp = ((struct ieee80211_mgmt *)skb->data)->u.beacon.timestamp;
1991 priv->timestamp = le64_to_cpu(timestamp);
1993 IWL_DEBUG_MAC80211(priv, "leave\n");
1994 spin_unlock_irqrestore(&priv->lock, flags);
1996 priv->cfg->ops->lib->post_associate(priv);
2000 EXPORT_SYMBOL(iwl_mac_beacon_update);
2002 static int iwl_set_mode(struct iwl_priv *priv, struct ieee80211_vif *vif)
2004 iwl_connection_init_rx_config(priv, vif->type);
2006 if (priv->cfg->ops->hcmd->set_rxon_chain)
2007 priv->cfg->ops->hcmd->set_rxon_chain(priv);
2009 memcpy(priv->staging_rxon.node_addr, priv->mac_addr, ETH_ALEN);
2011 return iwlcore_commit_rxon(priv);
2014 int iwl_mac_add_interface(struct ieee80211_hw *hw, struct ieee80211_vif *vif)
2016 struct iwl_priv *priv = hw->priv;
2019 IWL_DEBUG_MAC80211(priv, "enter: type %d\n", vif->type);
2021 mutex_lock(&priv->mutex);
2023 if (WARN_ON(!iwl_is_ready_rf(priv))) {
2029 IWL_DEBUG_MAC80211(priv, "leave - vif != NULL\n");
2035 priv->iw_mode = vif->type;
2037 IWL_DEBUG_MAC80211(priv, "Set %pM\n", vif->addr);
2038 memcpy(priv->mac_addr, vif->addr, ETH_ALEN);
2040 err = iwl_set_mode(priv, vif);
2044 /* Add the broadcast address so we can send broadcast frames */
2045 err = priv->cfg->ops->lib->add_bcast_station(priv);
2053 priv->iw_mode = NL80211_IFTYPE_STATION;
2055 mutex_unlock(&priv->mutex);
2057 IWL_DEBUG_MAC80211(priv, "leave\n");
2060 EXPORT_SYMBOL(iwl_mac_add_interface);
2062 void iwl_mac_remove_interface(struct ieee80211_hw *hw,
2063 struct ieee80211_vif *vif)
2065 struct iwl_priv *priv = hw->priv;
2067 IWL_DEBUG_MAC80211(priv, "enter\n");
2069 mutex_lock(&priv->mutex);
2071 iwl_clear_ucode_stations(priv, true);
2073 if (iwl_is_ready_rf(priv)) {
2074 iwl_scan_cancel_timeout(priv, 100);
2075 priv->staging_rxon.filter_flags &= ~RXON_FILTER_ASSOC_MSK;
2076 iwlcore_commit_rxon(priv);
2078 if (priv->vif == vif) {
2080 memset(priv->bssid, 0, ETH_ALEN);
2082 mutex_unlock(&priv->mutex);
2084 IWL_DEBUG_MAC80211(priv, "leave\n");
2087 EXPORT_SYMBOL(iwl_mac_remove_interface);
2090 * iwl_mac_config - mac80211 config callback
2092 int iwl_mac_config(struct ieee80211_hw *hw, u32 changed)
2094 struct iwl_priv *priv = hw->priv;
2095 const struct iwl_channel_info *ch_info;
2096 struct ieee80211_conf *conf = &hw->conf;
2097 struct iwl_ht_config *ht_conf = &priv->current_ht_config;
2098 unsigned long flags = 0;
2101 int scan_active = 0;
2103 mutex_lock(&priv->mutex);
2105 IWL_DEBUG_MAC80211(priv, "enter to channel %d changed 0x%X\n",
2106 conf->channel->hw_value, changed);
2108 if (unlikely(!priv->cfg->mod_params->disable_hw_scan &&
2109 test_bit(STATUS_SCANNING, &priv->status))) {
2111 IWL_DEBUG_MAC80211(priv, "leave - scanning\n");
2114 if (changed & (IEEE80211_CONF_CHANGE_SMPS |
2115 IEEE80211_CONF_CHANGE_CHANNEL)) {
2116 /* mac80211 uses static for non-HT which is what we want */
2117 priv->current_ht_config.smps = conf->smps_mode;
2120 * Recalculate chain counts.
2122 * If monitor mode is enabled then mac80211 will
2123 * set up the SM PS mode to OFF if an HT channel is
2126 if (priv->cfg->ops->hcmd->set_rxon_chain)
2127 priv->cfg->ops->hcmd->set_rxon_chain(priv);
2130 /* during scanning mac80211 will delay channel setting until
2131 * scan finish with changed = 0
2133 if (!changed || (changed & IEEE80211_CONF_CHANGE_CHANNEL)) {
2137 ch = ieee80211_frequency_to_channel(conf->channel->center_freq);
2138 ch_info = iwl_get_channel_info(priv, conf->channel->band, ch);
2139 if (!is_channel_valid(ch_info)) {
2140 IWL_DEBUG_MAC80211(priv, "leave - invalid channel\n");
2145 spin_lock_irqsave(&priv->lock, flags);
2147 /* Configure HT40 channels */
2148 ht_conf->is_ht = conf_is_ht(conf);
2149 if (ht_conf->is_ht) {
2150 if (conf_is_ht40_minus(conf)) {
2151 ht_conf->extension_chan_offset =
2152 IEEE80211_HT_PARAM_CHA_SEC_BELOW;
2153 ht_conf->is_40mhz = true;
2154 } else if (conf_is_ht40_plus(conf)) {
2155 ht_conf->extension_chan_offset =
2156 IEEE80211_HT_PARAM_CHA_SEC_ABOVE;
2157 ht_conf->is_40mhz = true;
2159 ht_conf->extension_chan_offset =
2160 IEEE80211_HT_PARAM_CHA_SEC_NONE;
2161 ht_conf->is_40mhz = false;
2164 ht_conf->is_40mhz = false;
2165 /* Default to no protection. Protection mode will later be set
2166 * from BSS config in iwl_ht_conf */
2167 ht_conf->ht_protection = IEEE80211_HT_OP_MODE_PROTECTION_NONE;
2169 /* if we are switching from ht to 2.4 clear flags
2170 * from any ht related info since 2.4 does not
2172 if ((le16_to_cpu(priv->staging_rxon.channel) != ch))
2173 priv->staging_rxon.flags = 0;
2175 iwl_set_rxon_channel(priv, conf->channel);
2176 iwl_set_rxon_ht(priv, ht_conf);
2178 iwl_set_flags_for_band(priv, conf->channel->band);
2179 spin_unlock_irqrestore(&priv->lock, flags);
2180 if (iwl_is_associated(priv) &&
2181 (le16_to_cpu(priv->active_rxon.channel) != ch) &&
2182 priv->cfg->ops->lib->set_channel_switch) {
2185 * at this point, staging_rxon has the
2186 * configuration for channel switch
2188 ret = priv->cfg->ops->lib->set_channel_switch(priv,
2191 iwl_print_rx_config_cmd(priv);
2194 priv->switch_rxon.switch_in_progress = false;
2197 /* The list of supported rates and rate mask can be different
2198 * for each band; since the band may have changed, reset
2199 * the rate mask to what mac80211 lists */
2203 if (changed & (IEEE80211_CONF_CHANGE_PS |
2204 IEEE80211_CONF_CHANGE_IDLE)) {
2205 ret = iwl_power_update_mode(priv, false);
2207 IWL_DEBUG_MAC80211(priv, "Error setting sleep level\n");
2210 if (changed & IEEE80211_CONF_CHANGE_POWER) {
2211 IWL_DEBUG_MAC80211(priv, "TX Power old=%d new=%d\n",
2212 priv->tx_power_user_lmt, conf->power_level);
2214 iwl_set_tx_power(priv, conf->power_level, false);
2217 if (changed & IEEE80211_CONF_CHANGE_QOS) {
2218 bool qos_active = !!(conf->flags & IEEE80211_CONF_QOS);
2220 spin_lock_irqsave(&priv->lock, flags);
2221 priv->qos_data.qos_active = qos_active;
2222 iwl_update_qos(priv);
2223 spin_unlock_irqrestore(&priv->lock, flags);
2226 if (!iwl_is_ready(priv)) {
2227 IWL_DEBUG_MAC80211(priv, "leave - not ready\n");
2234 if (memcmp(&priv->active_rxon,
2235 &priv->staging_rxon, sizeof(priv->staging_rxon)))
2236 iwlcore_commit_rxon(priv);
2238 IWL_DEBUG_INFO(priv, "Not re-sending same RXON configuration.\n");
2242 IWL_DEBUG_MAC80211(priv, "leave\n");
2243 mutex_unlock(&priv->mutex);
2246 EXPORT_SYMBOL(iwl_mac_config);
2248 void iwl_mac_reset_tsf(struct ieee80211_hw *hw)
2250 struct iwl_priv *priv = hw->priv;
2251 unsigned long flags;
2253 mutex_lock(&priv->mutex);
2254 IWL_DEBUG_MAC80211(priv, "enter\n");
2256 spin_lock_irqsave(&priv->lock, flags);
2257 memset(&priv->current_ht_config, 0, sizeof(struct iwl_ht_config));
2258 spin_unlock_irqrestore(&priv->lock, flags);
2260 spin_lock_irqsave(&priv->lock, flags);
2262 priv->assoc_capability = 0;
2264 /* new association get rid of ibss beacon skb */
2265 if (priv->ibss_beacon)
2266 dev_kfree_skb(priv->ibss_beacon);
2268 priv->ibss_beacon = NULL;
2270 priv->beacon_int = priv->vif->bss_conf.beacon_int;
2271 priv->timestamp = 0;
2273 spin_unlock_irqrestore(&priv->lock, flags);
2275 if (!iwl_is_ready_rf(priv)) {
2276 IWL_DEBUG_MAC80211(priv, "leave - not ready\n");
2277 mutex_unlock(&priv->mutex);
2281 /* we are restarting association process
2282 * clear RXON_FILTER_ASSOC_MSK bit
2284 iwl_scan_cancel_timeout(priv, 100);
2285 priv->staging_rxon.filter_flags &= ~RXON_FILTER_ASSOC_MSK;
2286 iwlcore_commit_rxon(priv);
2290 mutex_unlock(&priv->mutex);
2292 IWL_DEBUG_MAC80211(priv, "leave\n");
2294 EXPORT_SYMBOL(iwl_mac_reset_tsf);
2296 int iwl_alloc_txq_mem(struct iwl_priv *priv)
2299 priv->txq = kzalloc(
2300 sizeof(struct iwl_tx_queue) * priv->cfg->num_of_queues,
2303 IWL_ERR(priv, "Not enough memory for txq\n");
2308 EXPORT_SYMBOL(iwl_alloc_txq_mem);
2310 void iwl_free_txq_mem(struct iwl_priv *priv)
2315 EXPORT_SYMBOL(iwl_free_txq_mem);
2317 #ifdef CONFIG_IWLWIFI_DEBUGFS
2319 #define IWL_TRAFFIC_DUMP_SIZE (IWL_TRAFFIC_ENTRY_SIZE * IWL_TRAFFIC_ENTRIES)
2321 void iwl_reset_traffic_log(struct iwl_priv *priv)
2323 priv->tx_traffic_idx = 0;
2324 priv->rx_traffic_idx = 0;
2325 if (priv->tx_traffic)
2326 memset(priv->tx_traffic, 0, IWL_TRAFFIC_DUMP_SIZE);
2327 if (priv->rx_traffic)
2328 memset(priv->rx_traffic, 0, IWL_TRAFFIC_DUMP_SIZE);
2331 int iwl_alloc_traffic_mem(struct iwl_priv *priv)
2333 u32 traffic_size = IWL_TRAFFIC_DUMP_SIZE;
2335 if (iwl_debug_level & IWL_DL_TX) {
2336 if (!priv->tx_traffic) {
2338 kzalloc(traffic_size, GFP_KERNEL);
2339 if (!priv->tx_traffic)
2343 if (iwl_debug_level & IWL_DL_RX) {
2344 if (!priv->rx_traffic) {
2346 kzalloc(traffic_size, GFP_KERNEL);
2347 if (!priv->rx_traffic)
2351 iwl_reset_traffic_log(priv);
2354 EXPORT_SYMBOL(iwl_alloc_traffic_mem);
2356 void iwl_free_traffic_mem(struct iwl_priv *priv)
2358 kfree(priv->tx_traffic);
2359 priv->tx_traffic = NULL;
2361 kfree(priv->rx_traffic);
2362 priv->rx_traffic = NULL;
2364 EXPORT_SYMBOL(iwl_free_traffic_mem);
2366 void iwl_dbg_log_tx_data_frame(struct iwl_priv *priv,
2367 u16 length, struct ieee80211_hdr *header)
2372 if (likely(!(iwl_debug_level & IWL_DL_TX)))
2375 if (!priv->tx_traffic)
2378 fc = header->frame_control;
2379 if (ieee80211_is_data(fc)) {
2380 len = (length > IWL_TRAFFIC_ENTRY_SIZE)
2381 ? IWL_TRAFFIC_ENTRY_SIZE : length;
2382 memcpy((priv->tx_traffic +
2383 (priv->tx_traffic_idx * IWL_TRAFFIC_ENTRY_SIZE)),
2385 priv->tx_traffic_idx =
2386 (priv->tx_traffic_idx + 1) % IWL_TRAFFIC_ENTRIES;
2389 EXPORT_SYMBOL(iwl_dbg_log_tx_data_frame);
2391 void iwl_dbg_log_rx_data_frame(struct iwl_priv *priv,
2392 u16 length, struct ieee80211_hdr *header)
2397 if (likely(!(iwl_debug_level & IWL_DL_RX)))
2400 if (!priv->rx_traffic)
2403 fc = header->frame_control;
2404 if (ieee80211_is_data(fc)) {
2405 len = (length > IWL_TRAFFIC_ENTRY_SIZE)
2406 ? IWL_TRAFFIC_ENTRY_SIZE : length;
2407 memcpy((priv->rx_traffic +
2408 (priv->rx_traffic_idx * IWL_TRAFFIC_ENTRY_SIZE)),
2410 priv->rx_traffic_idx =
2411 (priv->rx_traffic_idx + 1) % IWL_TRAFFIC_ENTRIES;
2414 EXPORT_SYMBOL(iwl_dbg_log_rx_data_frame);
2416 const char *get_mgmt_string(int cmd)
2419 IWL_CMD(MANAGEMENT_ASSOC_REQ);
2420 IWL_CMD(MANAGEMENT_ASSOC_RESP);
2421 IWL_CMD(MANAGEMENT_REASSOC_REQ);
2422 IWL_CMD(MANAGEMENT_REASSOC_RESP);
2423 IWL_CMD(MANAGEMENT_PROBE_REQ);
2424 IWL_CMD(MANAGEMENT_PROBE_RESP);
2425 IWL_CMD(MANAGEMENT_BEACON);
2426 IWL_CMD(MANAGEMENT_ATIM);
2427 IWL_CMD(MANAGEMENT_DISASSOC);
2428 IWL_CMD(MANAGEMENT_AUTH);
2429 IWL_CMD(MANAGEMENT_DEAUTH);
2430 IWL_CMD(MANAGEMENT_ACTION);
2437 const char *get_ctrl_string(int cmd)
2440 IWL_CMD(CONTROL_BACK_REQ);
2441 IWL_CMD(CONTROL_BACK);
2442 IWL_CMD(CONTROL_PSPOLL);
2443 IWL_CMD(CONTROL_RTS);
2444 IWL_CMD(CONTROL_CTS);
2445 IWL_CMD(CONTROL_ACK);
2446 IWL_CMD(CONTROL_CFEND);
2447 IWL_CMD(CONTROL_CFENDACK);
2454 void iwl_clear_traffic_stats(struct iwl_priv *priv)
2456 memset(&priv->tx_stats, 0, sizeof(struct traffic_stats));
2457 memset(&priv->rx_stats, 0, sizeof(struct traffic_stats));
2462 * if CONFIG_IWLWIFI_DEBUGFS defined, iwl_update_stats function will
2463 * record all the MGMT, CTRL and DATA pkt for both TX and Rx pass.
2464 * Use debugFs to display the rx/rx_statistics
2465 * if CONFIG_IWLWIFI_DEBUGFS not being defined, then no MGMT and CTRL
2466 * information will be recorded, but DATA pkt still will be recorded
2467 * for the reason of iwl_led.c need to control the led blinking based on
2468 * number of tx and rx data.
2471 void iwl_update_stats(struct iwl_priv *priv, bool is_tx, __le16 fc, u16 len)
2473 struct traffic_stats *stats;
2476 stats = &priv->tx_stats;
2478 stats = &priv->rx_stats;
2480 if (ieee80211_is_mgmt(fc)) {
2481 switch (fc & cpu_to_le16(IEEE80211_FCTL_STYPE)) {
2482 case cpu_to_le16(IEEE80211_STYPE_ASSOC_REQ):
2483 stats->mgmt[MANAGEMENT_ASSOC_REQ]++;
2485 case cpu_to_le16(IEEE80211_STYPE_ASSOC_RESP):
2486 stats->mgmt[MANAGEMENT_ASSOC_RESP]++;
2488 case cpu_to_le16(IEEE80211_STYPE_REASSOC_REQ):
2489 stats->mgmt[MANAGEMENT_REASSOC_REQ]++;
2491 case cpu_to_le16(IEEE80211_STYPE_REASSOC_RESP):
2492 stats->mgmt[MANAGEMENT_REASSOC_RESP]++;
2494 case cpu_to_le16(IEEE80211_STYPE_PROBE_REQ):
2495 stats->mgmt[MANAGEMENT_PROBE_REQ]++;
2497 case cpu_to_le16(IEEE80211_STYPE_PROBE_RESP):
2498 stats->mgmt[MANAGEMENT_PROBE_RESP]++;
2500 case cpu_to_le16(IEEE80211_STYPE_BEACON):
2501 stats->mgmt[MANAGEMENT_BEACON]++;
2503 case cpu_to_le16(IEEE80211_STYPE_ATIM):
2504 stats->mgmt[MANAGEMENT_ATIM]++;
2506 case cpu_to_le16(IEEE80211_STYPE_DISASSOC):
2507 stats->mgmt[MANAGEMENT_DISASSOC]++;
2509 case cpu_to_le16(IEEE80211_STYPE_AUTH):
2510 stats->mgmt[MANAGEMENT_AUTH]++;
2512 case cpu_to_le16(IEEE80211_STYPE_DEAUTH):
2513 stats->mgmt[MANAGEMENT_DEAUTH]++;
2515 case cpu_to_le16(IEEE80211_STYPE_ACTION):
2516 stats->mgmt[MANAGEMENT_ACTION]++;
2519 } else if (ieee80211_is_ctl(fc)) {
2520 switch (fc & cpu_to_le16(IEEE80211_FCTL_STYPE)) {
2521 case cpu_to_le16(IEEE80211_STYPE_BACK_REQ):
2522 stats->ctrl[CONTROL_BACK_REQ]++;
2524 case cpu_to_le16(IEEE80211_STYPE_BACK):
2525 stats->ctrl[CONTROL_BACK]++;
2527 case cpu_to_le16(IEEE80211_STYPE_PSPOLL):
2528 stats->ctrl[CONTROL_PSPOLL]++;
2530 case cpu_to_le16(IEEE80211_STYPE_RTS):
2531 stats->ctrl[CONTROL_RTS]++;
2533 case cpu_to_le16(IEEE80211_STYPE_CTS):
2534 stats->ctrl[CONTROL_CTS]++;
2536 case cpu_to_le16(IEEE80211_STYPE_ACK):
2537 stats->ctrl[CONTROL_ACK]++;
2539 case cpu_to_le16(IEEE80211_STYPE_CFEND):
2540 stats->ctrl[CONTROL_CFEND]++;
2542 case cpu_to_le16(IEEE80211_STYPE_CFENDACK):
2543 stats->ctrl[CONTROL_CFENDACK]++;
2549 stats->data_bytes += len;
2551 iwl_leds_background(priv);
2553 EXPORT_SYMBOL(iwl_update_stats);
2556 const static char *get_csr_string(int cmd)
2559 IWL_CMD(CSR_HW_IF_CONFIG_REG);
2560 IWL_CMD(CSR_INT_COALESCING);
2562 IWL_CMD(CSR_INT_MASK);
2563 IWL_CMD(CSR_FH_INT_STATUS);
2564 IWL_CMD(CSR_GPIO_IN);
2566 IWL_CMD(CSR_GP_CNTRL);
2567 IWL_CMD(CSR_HW_REV);
2568 IWL_CMD(CSR_EEPROM_REG);
2569 IWL_CMD(CSR_EEPROM_GP);
2570 IWL_CMD(CSR_OTP_GP_REG);
2571 IWL_CMD(CSR_GIO_REG);
2572 IWL_CMD(CSR_GP_UCODE_REG);
2573 IWL_CMD(CSR_GP_DRIVER_REG);
2574 IWL_CMD(CSR_UCODE_DRV_GP1);
2575 IWL_CMD(CSR_UCODE_DRV_GP2);
2576 IWL_CMD(CSR_LED_REG);
2577 IWL_CMD(CSR_DRAM_INT_TBL_REG);
2578 IWL_CMD(CSR_GIO_CHICKEN_BITS);
2579 IWL_CMD(CSR_ANA_PLL_CFG);
2580 IWL_CMD(CSR_HW_REV_WA_REG);
2581 IWL_CMD(CSR_DBG_HPET_MEM_REG);
2588 void iwl_dump_csr(struct iwl_priv *priv)
2592 CSR_HW_IF_CONFIG_REG,
2610 CSR_DRAM_INT_TBL_REG,
2611 CSR_GIO_CHICKEN_BITS,
2614 CSR_DBG_HPET_MEM_REG
2616 IWL_ERR(priv, "CSR values:\n");
2617 IWL_ERR(priv, "(2nd byte of CSR_INT_COALESCING is "
2618 "CSR_INT_PERIODIC_REG)\n");
2619 for (i = 0; i < ARRAY_SIZE(csr_tbl); i++) {
2620 IWL_ERR(priv, " %25s: 0X%08x\n",
2621 get_csr_string(csr_tbl[i]),
2622 iwl_read32(priv, csr_tbl[i]));
2625 EXPORT_SYMBOL(iwl_dump_csr);
2627 const static char *get_fh_string(int cmd)
2630 IWL_CMD(FH_RSCSR_CHNL0_STTS_WPTR_REG);
2631 IWL_CMD(FH_RSCSR_CHNL0_RBDCB_BASE_REG);
2632 IWL_CMD(FH_RSCSR_CHNL0_WPTR);
2633 IWL_CMD(FH_MEM_RCSR_CHNL0_CONFIG_REG);
2634 IWL_CMD(FH_MEM_RSSR_SHARED_CTRL_REG);
2635 IWL_CMD(FH_MEM_RSSR_RX_STATUS_REG);
2636 IWL_CMD(FH_MEM_RSSR_RX_ENABLE_ERR_IRQ2DRV);
2637 IWL_CMD(FH_TSSR_TX_STATUS_REG);
2638 IWL_CMD(FH_TSSR_TX_ERROR_REG);
2645 int iwl_dump_fh(struct iwl_priv *priv, char **buf, bool display)
2648 #ifdef CONFIG_IWLWIFI_DEBUG
2653 FH_RSCSR_CHNL0_STTS_WPTR_REG,
2654 FH_RSCSR_CHNL0_RBDCB_BASE_REG,
2655 FH_RSCSR_CHNL0_WPTR,
2656 FH_MEM_RCSR_CHNL0_CONFIG_REG,
2657 FH_MEM_RSSR_SHARED_CTRL_REG,
2658 FH_MEM_RSSR_RX_STATUS_REG,
2659 FH_MEM_RSSR_RX_ENABLE_ERR_IRQ2DRV,
2660 FH_TSSR_TX_STATUS_REG,
2661 FH_TSSR_TX_ERROR_REG
2663 #ifdef CONFIG_IWLWIFI_DEBUG
2665 bufsz = ARRAY_SIZE(fh_tbl) * 48 + 40;
2666 *buf = kmalloc(bufsz, GFP_KERNEL);
2669 pos += scnprintf(*buf + pos, bufsz - pos,
2670 "FH register values:\n");
2671 for (i = 0; i < ARRAY_SIZE(fh_tbl); i++) {
2672 pos += scnprintf(*buf + pos, bufsz - pos,
2674 get_fh_string(fh_tbl[i]),
2675 iwl_read_direct32(priv, fh_tbl[i]));
2680 IWL_ERR(priv, "FH register values:\n");
2681 for (i = 0; i < ARRAY_SIZE(fh_tbl); i++) {
2682 IWL_ERR(priv, " %34s: 0X%08x\n",
2683 get_fh_string(fh_tbl[i]),
2684 iwl_read_direct32(priv, fh_tbl[i]));
2688 EXPORT_SYMBOL(iwl_dump_fh);
2690 static void iwl_force_rf_reset(struct iwl_priv *priv)
2692 if (test_bit(STATUS_EXIT_PENDING, &priv->status))
2695 if (!iwl_is_associated(priv)) {
2696 IWL_DEBUG_SCAN(priv, "force reset rejected: not associated\n");
2700 * There is no easy and better way to force reset the radio,
2701 * the only known method is switching channel which will force to
2702 * reset and tune the radio.
2703 * Use internal short scan (single channel) operation to should
2704 * achieve this objective.
2705 * Driver should reset the radio when number of consecutive missed
2706 * beacon, or any other uCode error condition detected.
2708 IWL_DEBUG_INFO(priv, "perform radio reset.\n");
2709 iwl_internal_short_hw_scan(priv);
2713 int iwl_force_reset(struct iwl_priv *priv, int mode)
2715 struct iwl_force_reset *force_reset;
2717 if (test_bit(STATUS_EXIT_PENDING, &priv->status))
2720 if (mode >= IWL_MAX_FORCE_RESET) {
2721 IWL_DEBUG_INFO(priv, "invalid reset request.\n");
2724 force_reset = &priv->force_reset[mode];
2725 force_reset->reset_request_count++;
2726 if (force_reset->last_force_reset_jiffies &&
2727 time_after(force_reset->last_force_reset_jiffies +
2728 force_reset->reset_duration, jiffies)) {
2729 IWL_DEBUG_INFO(priv, "force reset rejected\n");
2730 force_reset->reset_reject_count++;
2733 force_reset->reset_success_count++;
2734 force_reset->last_force_reset_jiffies = jiffies;
2735 IWL_DEBUG_INFO(priv, "perform force reset (%d)\n", mode);
2738 iwl_force_rf_reset(priv);
2741 IWL_ERR(priv, "On demand firmware reload\n");
2742 /* Set the FW error flag -- cleared on iwl_down */
2743 set_bit(STATUS_FW_ERROR, &priv->status);
2744 wake_up_interruptible(&priv->wait_command_queue);
2746 * Keep the restart process from trying to send host
2747 * commands by clearing the INIT status bit
2749 clear_bit(STATUS_READY, &priv->status);
2750 queue_work(priv->workqueue, &priv->restart);
2755 EXPORT_SYMBOL(iwl_force_reset);
2758 * iwl_bg_monitor_recover - Timer callback to check for stuck queue and recover
2760 * During normal condition (no queue is stuck), the timer is continually set to
2761 * execute every monitor_recover_period milliseconds after the last timer
2762 * expired. When the queue read_ptr is at the same place, the timer is
2763 * shorten to 100mSecs. This is
2764 * 1) to reduce the chance that the read_ptr may wrap around (not stuck)
2765 * 2) to detect the stuck queues quicker before the station and AP can
2766 * disassociate each other.
2768 * This function monitors all the tx queues and recover from it if any
2769 * of the queues are stuck.
2770 * 1. It first check the cmd queue for stuck conditions. If it is stuck,
2771 * it will recover by resetting the firmware and return.
2772 * 2. Then, it checks for station association. If it associates it will check
2773 * other queues. If any queue is stuck, it will recover by resetting
2775 * Note: It the number of times the queue read_ptr to be at the same place to
2776 * be MAX_REPEAT+1 in order to consider to be stuck.
2779 * The maximum number of times the read pointer of the tx queue at the
2780 * same place without considering to be stuck.
2782 #define MAX_REPEAT (2)
2783 static int iwl_check_stuck_queue(struct iwl_priv *priv, int cnt)
2785 struct iwl_tx_queue *txq;
2786 struct iwl_queue *q;
2788 txq = &priv->txq[cnt];
2790 /* queue is empty, skip */
2791 if (q->read_ptr != q->write_ptr) {
2792 if (q->read_ptr == q->last_read_ptr) {
2793 /* a queue has not been read from last time */
2794 if (q->repeat_same_read_ptr > MAX_REPEAT) {
2796 "queue %d stuck %d time. Fw reload.\n",
2797 q->id, q->repeat_same_read_ptr);
2798 q->repeat_same_read_ptr = 0;
2799 iwl_force_reset(priv, IWL_FW_RESET);
2801 q->repeat_same_read_ptr++;
2802 IWL_DEBUG_RADIO(priv,
2803 "queue %d, not read %d time\n",
2805 q->repeat_same_read_ptr);
2806 mod_timer(&priv->monitor_recover, jiffies +
2807 msecs_to_jiffies(IWL_ONE_HUNDRED_MSECS));
2811 q->last_read_ptr = q->read_ptr;
2812 q->repeat_same_read_ptr = 0;
2818 void iwl_bg_monitor_recover(unsigned long data)
2820 struct iwl_priv *priv = (struct iwl_priv *)data;
2823 if (test_bit(STATUS_EXIT_PENDING, &priv->status))
2826 /* monitor and check for stuck cmd queue */
2827 if (iwl_check_stuck_queue(priv, IWL_CMD_QUEUE_NUM))
2830 /* monitor and check for other stuck queues */
2831 if (iwl_is_associated(priv)) {
2832 for (cnt = 0; cnt < priv->hw_params.max_txq_num; cnt++) {
2833 /* skip as we already checked the command queue */
2834 if (cnt == IWL_CMD_QUEUE_NUM)
2836 if (iwl_check_stuck_queue(priv, cnt))
2841 * Reschedule the timer to occur in
2842 * priv->cfg->monitor_recover_period
2844 mod_timer(&priv->monitor_recover,
2845 jiffies + msecs_to_jiffies(priv->cfg->monitor_recover_period));
2847 EXPORT_SYMBOL(iwl_bg_monitor_recover);
2851 int iwl_pci_suspend(struct pci_dev *pdev, pm_message_t state)
2853 struct iwl_priv *priv = pci_get_drvdata(pdev);
2856 * This function is called when system goes into suspend state
2857 * mac80211 will call iwl_mac_stop() from the mac80211 suspend function
2858 * first but since iwl_mac_stop() has no knowledge of who the caller is,
2859 * it will not call apm_ops.stop() to stop the DMA operation.
2860 * Calling apm_ops.stop here to make sure we stop the DMA.
2862 priv->cfg->ops->lib->apm_ops.stop(priv);
2864 pci_save_state(pdev);
2865 pci_disable_device(pdev);
2866 pci_set_power_state(pdev, PCI_D3hot);
2870 EXPORT_SYMBOL(iwl_pci_suspend);
2872 int iwl_pci_resume(struct pci_dev *pdev)
2874 struct iwl_priv *priv = pci_get_drvdata(pdev);
2878 * We disable the RETRY_TIMEOUT register (0x41) to keep
2879 * PCI Tx retries from interfering with C3 CPU state.
2881 pci_write_config_byte(pdev, PCI_CFG_RETRY_TIMEOUT, 0x00);
2883 pci_set_power_state(pdev, PCI_D0);
2884 ret = pci_enable_device(pdev);
2887 pci_restore_state(pdev);
2888 iwl_enable_interrupts(priv);
2892 EXPORT_SYMBOL(iwl_pci_resume);
2894 #endif /* CONFIG_PM */