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iwlwifi: make mac80211 ops a device config
[deliverable/linux.git] / drivers / net / wireless / iwlwifi / iwl-core.c
CommitLineData
df48c323 1/******************************************************************************
df48c323
TW		 2 *
3 * GPL LICENSE SUMMARY
4 *
1f447808 5 * Copyright(c) 2008 - 2010 Intel Corporation. All rights reserved.
df48c323
TW		 6 *
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.
10 *
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.
15 *
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,
19 * USA
20 *
21 * The full GNU General Public License is included in this distribution
22 * in the file called LICENSE.GPL.
23 *
24 * Contact Information:
759ef89f 25 * Intel Linux Wireless <ilw@linux.intel.com>
df48c323
TW		 26 * Intel Corporation, 5200 N.E. Elam Young Parkway, Hillsboro, OR 97124-6497
27 *****************************************************************************/
28
29#include <linux/kernel.h>
30#include <linux/module.h>
8ccde88a 31#include <linux/etherdevice.h>
d43c36dc 32#include <linux/sched.h>
5a0e3ad6 33#include <linux/slab.h>
1d0a082d 34#include <net/mac80211.h>
df48c323 35
6bc913bd 36#include "iwl-eeprom.h"
3e0d4cb1 37#include "iwl-dev.h" /* FIXME: remove */
19335774 38#include "iwl-debug.h"
df48c323 39#include "iwl-core.h"
b661c819 40#include "iwl-io.h"
5da4b55f 41#include "iwl-power.h"
83dde8c9 42#include "iwl-sta.h"
ef850d7c 43#include "iwl-helpers.h"
df48c323 44
1d0a082d 45
df48c323
TW		 46MODULE_DESCRIPTION("iwl core");
47MODULE_VERSION(IWLWIFI_VERSION);
a7b75207 48MODULE_AUTHOR(DRV_COPYRIGHT " " DRV_AUTHOR);
712b6cf5 49MODULE_LICENSE("GPL");
df48c323 50
06702a73
WYG		 51/*
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
57 *
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"
64 *
65 * default: bt_coex_active = true (BT_COEX_ENABLE)
66 */
670245ed
JB		 67bool bt_coex_active = true;
68EXPORT_SYMBOL_GPL(bt_coex_active);
06702a73 69module_param(bt_coex_active, bool, S_IRUGO);
6c69d121 70MODULE_PARM_DESC(bt_coex_active, "enable wifi/bluetooth co-exist");
06702a73 71
a562a9dd
RC		 72u32 iwl_debug_level;
73EXPORT_SYMBOL(iwl_debug_level);
74
57bd1bea
TW		 75const u8 iwl_bcast_addr[ETH_ALEN] = { 0xFF, 0xFF, 0xFF, 0xFF, 0xFF, 0xFF };
76EXPORT_SYMBOL(iwl_bcast_addr);
77
78
1d0a082d 79/* This function both allocates and initializes hw and priv. */
dc21b545 80struct ieee80211_hw *iwl_alloc_all(struct iwl_cfg *cfg)
1d0a082d
AK		 81{
82 struct iwl_priv *priv;
1d0a082d
AK		 83 /* mac80211 allocates memory for this device instance, including
84 * space for this driver's private structure */
dc21b545
JB		 85 struct ieee80211_hw *hw;
86
87 hw = ieee80211_alloc_hw(sizeof(struct iwl_priv),
88 cfg->ops->ieee80211_ops);
1d0a082d 89 if (hw == NULL) {
c96c31e4 90 pr_err("%s: Can not allocate network device\n",
a3139c59 91 cfg->name);
1d0a082d
AK		 92 goto out;
93 }
94
95 priv = hw->priv;
96 priv->hw = hw;
97
98out:
99 return hw;
100}
101EXPORT_SYMBOL(iwl_alloc_all);
102
14d2aac5
AK		 103/*
104 * QoS support
105*/
8dfdb9d5 106static void iwl_update_qos(struct iwl_priv *priv, struct iwl_rxon_context *ctx)
14d2aac5
AK		 107{
108 if (test_bit(STATUS_EXIT_PENDING, &priv->status))
109 return;
110
763cc3bf
JB		 111 if (!ctx->is_active)
112 return;
113
8dfdb9d5 114 ctx->qos_data.def_qos_parm.qos_flags = 0;
14d2aac5 115
8dfdb9d5
JB		 116 if (ctx->qos_data.qos_active)
117 ctx->qos_data.def_qos_parm.qos_flags |=
14d2aac5
AK		 118 QOS_PARAM_FLG_UPDATE_EDCA_MSK;
119
7e6a5886 120 if (ctx->ht.enabled)
8dfdb9d5 121 ctx->qos_data.def_qos_parm.qos_flags |= QOS_PARAM_FLG_TGN_MSK;
14d2aac5 122
e61146e3 123 IWL_DEBUG_QOS(priv, "send QoS cmd with Qos active=%d FLAGS=0x%X\n",
8dfdb9d5
JB		 124 ctx->qos_data.qos_active,
125 ctx->qos_data.def_qos_parm.qos_flags);
14d2aac5 126
8dfdb9d5 127 iwl_send_cmd_pdu_async(priv, ctx->qos_cmd,
e61146e3 128 sizeof(struct iwl_qosparam_cmd),
8dfdb9d5 129 &ctx->qos_data.def_qos_parm, NULL);
14d2aac5 130}
c7de35cd 131
d9fe60de
JB		 132#define MAX_BIT_RATE_40_MHZ 150 /* Mbps */
133#define MAX_BIT_RATE_20_MHZ 72 /* Mbps */
c7de35cd 134static void iwlcore_init_ht_hw_capab(const struct iwl_priv *priv,
d9fe60de 135 struct ieee80211_sta_ht_cap *ht_info,
c7de35cd
RR		 136 enum ieee80211_band band)
137{
39130df3
RR		 138 u16 max_bit_rate = 0;
139 u8 rx_chains_num = priv->hw_params.rx_chains_num;
140 u8 tx_chains_num = priv->hw_params.tx_chains_num;
141
c7de35cd 142 ht_info->cap = 0;
d9fe60de 143 memset(&ht_info->mcs, 0, sizeof(ht_info->mcs));
c7de35cd 144
d9fe60de 145 ht_info->ht_supported = true;
c7de35cd 146
7cb1b088
WYG		 147 if (priv->cfg->ht_params &&
148 priv->cfg->ht_params->ht_greenfield_support)
b261793d 149 ht_info->cap |= IEEE80211_HT_CAP_GRN_FLD;
d9fe60de 150 ht_info->cap |= IEEE80211_HT_CAP_SGI_20;
39130df3 151 max_bit_rate = MAX_BIT_RATE_20_MHZ;
7aafef1c 152 if (priv->hw_params.ht40_channel & BIT(band)) {
d9fe60de
JB		 153 ht_info->cap |= IEEE80211_HT_CAP_SUP_WIDTH_20_40;
154 ht_info->cap |= IEEE80211_HT_CAP_SGI_40;
155 ht_info->mcs.rx_mask[4] = 0x01;
39130df3 156 max_bit_rate = MAX_BIT_RATE_40_MHZ;
c7de35cd 157 }
c7de35cd
RR		 158
159 if (priv->cfg->mod_params->amsdu_size_8K)
d9fe60de 160 ht_info->cap |= IEEE80211_HT_CAP_MAX_AMSDU;
c7de35cd
RR		 161
162 ht_info->ampdu_factor = CFG_HT_RX_AMPDU_FACTOR_DEF;
7cb1b088
WYG		 163 if (priv->cfg->bt_params && priv->cfg->bt_params->ampdu_factor)
164 ht_info->ampdu_factor = priv->cfg->bt_params->ampdu_factor;
c7de35cd 165 ht_info->ampdu_density = CFG_HT_MPDU_DENSITY_DEF;
7cb1b088
WYG		 166 if (priv->cfg->bt_params && priv->cfg->bt_params->ampdu_density)
167 ht_info->ampdu_density = priv->cfg->bt_params->ampdu_density;
c7de35cd 168
d9fe60de 169 ht_info->mcs.rx_mask[0] = 0xFF;
39130df3 170 if (rx_chains_num >= 2)
d9fe60de 171 ht_info->mcs.rx_mask[1] = 0xFF;
39130df3 172 if (rx_chains_num >= 3)
d9fe60de 173 ht_info->mcs.rx_mask[2] = 0xFF;
39130df3
RR		 174
175 /* Highest supported Rx data rate */
176 max_bit_rate *= rx_chains_num;
d9fe60de
JB		 177 WARN_ON(max_bit_rate & ~IEEE80211_HT_MCS_RX_HIGHEST_MASK);
178 ht_info->mcs.rx_highest = cpu_to_le16(max_bit_rate);
39130df3
RR		 179
180 /* Tx MCS capabilities */
d9fe60de 181 ht_info->mcs.tx_params = IEEE80211_HT_MCS_TX_DEFINED;
39130df3 182 if (tx_chains_num != rx_chains_num) {
d9fe60de
JB		 183 ht_info->mcs.tx_params |= IEEE80211_HT_MCS_TX_RX_DIFF;
184 ht_info->mcs.tx_params |= ((tx_chains_num - 1) <<
185 IEEE80211_HT_MCS_TX_MAX_STREAMS_SHIFT);
39130df3 186 }
c7de35cd 187}
c7de35cd 188
c7de35cd
RR		 189/**
190 * iwlcore_init_geos - Initialize mac80211's geo/channel info based from eeprom
191 */
534166de 192int iwlcore_init_geos(struct iwl_priv *priv)
c7de35cd
RR		 193{
194 struct iwl_channel_info *ch;
195 struct ieee80211_supported_band *sband;
196 struct ieee80211_channel *channels;
197 struct ieee80211_channel *geo_ch;
198 struct ieee80211_rate *rates;
199 int i = 0;
200
201 if (priv->bands[IEEE80211_BAND_2GHZ].n_bitrates ||
202 priv->bands[IEEE80211_BAND_5GHZ].n_bitrates) {
e1623446 203 IWL_DEBUG_INFO(priv, "Geography modes already initialized.\n");
c7de35cd
RR		 204 set_bit(STATUS_GEO_CONFIGURED, &priv->status);
205 return 0;
206 }
207
208 channels = kzalloc(sizeof(struct ieee80211_channel) *
209 priv->channel_count, GFP_KERNEL);
210 if (!channels)
211 return -ENOMEM;
212
5027309b 213 rates = kzalloc((sizeof(struct ieee80211_rate) * IWL_RATE_COUNT_LEGACY),
c7de35cd
RR		 214 GFP_KERNEL);
215 if (!rates) {
216 kfree(channels);
217 return -ENOMEM;
218 }
219
220 /* 5.2GHz channels start after the 2.4GHz channels */
221 sband = &priv->bands[IEEE80211_BAND_5GHZ];
222 sband->channels = &channels[ARRAY_SIZE(iwl_eeprom_band_1)];
223 /* just OFDM */
224 sband->bitrates = &rates[IWL_FIRST_OFDM_RATE];
5027309b 225 sband->n_bitrates = IWL_RATE_COUNT_LEGACY - IWL_FIRST_OFDM_RATE;
c7de35cd 226
49779293 227 if (priv->cfg->sku & IWL_SKU_N)
d9fe60de 228 iwlcore_init_ht_hw_capab(priv, &sband->ht_cap,
49779293 229 IEEE80211_BAND_5GHZ);
c7de35cd
RR		 230
231 sband = &priv->bands[IEEE80211_BAND_2GHZ];
232 sband->channels = channels;
233 /* OFDM & CCK */
234 sband->bitrates = rates;
5027309b 235 sband->n_bitrates = IWL_RATE_COUNT_LEGACY;
c7de35cd 236
49779293 237 if (priv->cfg->sku & IWL_SKU_N)
d9fe60de 238 iwlcore_init_ht_hw_capab(priv, &sband->ht_cap,
49779293 239 IEEE80211_BAND_2GHZ);
c7de35cd
RR		 240
241 priv->ieee_channels = channels;
242 priv->ieee_rates = rates;
243
c7de35cd
RR		 244 for (i = 0; i < priv->channel_count; i++) {
245 ch = &priv->channel_info[i];
246
247 /* FIXME: might be removed if scan is OK */
248 if (!is_channel_valid(ch))
249 continue;
250
251 if (is_channel_a_band(ch))
252 sband = &priv->bands[IEEE80211_BAND_5GHZ];
253 else
254 sband = &priv->bands[IEEE80211_BAND_2GHZ];
255
256 geo_ch = &sband->channels[sband->n_channels++];
257
258 geo_ch->center_freq =
259 ieee80211_channel_to_frequency(ch->channel);
260 geo_ch->max_power = ch->max_power_avg;
261 geo_ch->max_antenna_gain = 0xff;
262 geo_ch->hw_value = ch->channel;
263
264 if (is_channel_valid(ch)) {
265 if (!(ch->flags & EEPROM_CHANNEL_IBSS))
266 geo_ch->flags |= IEEE80211_CHAN_NO_IBSS;
267
268 if (!(ch->flags & EEPROM_CHANNEL_ACTIVE))
269 geo_ch->flags |= IEEE80211_CHAN_PASSIVE_SCAN;
270
271 if (ch->flags & EEPROM_CHANNEL_RADAR)
272 geo_ch->flags |= IEEE80211_CHAN_RADAR;
273
7aafef1c 274 geo_ch->flags |= ch->ht40_extension_channel;
4d38c2e8 275
dc1b0973
WYG		 276 if (ch->max_power_avg > priv->tx_power_device_lmt)
277 priv->tx_power_device_lmt = ch->max_power_avg;
c7de35cd
RR		 278 } else {
279 geo_ch->flags |= IEEE80211_CHAN_DISABLED;
280 }
281
e1623446 282 IWL_DEBUG_INFO(priv, "Channel %d Freq=%d[%sGHz] %s flag=0x%X\n",
c7de35cd
RR		 283 ch->channel, geo_ch->center_freq,
284 is_channel_a_band(ch) ? "5.2" : "2.4",
285 geo_ch->flags & IEEE80211_CHAN_DISABLED ?
286 "restricted" : "valid",
287 geo_ch->flags);
288 }
289
290 if ((priv->bands[IEEE80211_BAND_5GHZ].n_channels == 0) &&
291 priv->cfg->sku & IWL_SKU_A) {
978785a3
TW		 292 IWL_INFO(priv, "Incorrectly detected BG card as ABG. "
293 "Please send your PCI ID 0x%04X:0x%04X to maintainer.\n",
a3139c59
SO		 294 priv->pci_dev->device,
295 priv->pci_dev->subsystem_device);
c7de35cd
RR		 296 priv->cfg->sku &= ~IWL_SKU_A;
297 }
298
978785a3 299 IWL_INFO(priv, "Tunable channels: %d 802.11bg, %d 802.11a channels\n",
a3139c59
SO		 300 priv->bands[IEEE80211_BAND_2GHZ].n_channels,
301 priv->bands[IEEE80211_BAND_5GHZ].n_channels);
c7de35cd
RR		 302
303 set_bit(STATUS_GEO_CONFIGURED, &priv->status);
304
305 return 0;
306}
534166de 307EXPORT_SYMBOL(iwlcore_init_geos);
c7de35cd
RR		 308
309/*
310 * iwlcore_free_geos - undo allocations in iwlcore_init_geos
311 */
534166de 312void iwlcore_free_geos(struct iwl_priv *priv)
c7de35cd
RR		 313{
314 kfree(priv->ieee_channels);
315 kfree(priv->ieee_rates);
316 clear_bit(STATUS_GEO_CONFIGURED, &priv->status);
317}
534166de 318EXPORT_SYMBOL(iwlcore_free_geos);
c7de35cd 319
37dc70fe 320/*
94597ab2 321 * iwlcore_tx_cmd_protection: Set rts/cts. 3945 and 4965 only share this
37dc70fe
AK		 322 * function.
323 */
94597ab2
JB		 324void iwlcore_tx_cmd_protection(struct iwl_priv *priv,
325 struct ieee80211_tx_info *info,
326 __le16 fc, __le32 *tx_flags)
37dc70fe
AK		 327{
328 if (info->control.rates[0].flags & IEEE80211_TX_RC_USE_RTS_CTS) {
329 *tx_flags |= TX_CMD_FLG_RTS_MSK;
330 *tx_flags &= ~TX_CMD_FLG_CTS_MSK;
94597ab2
JB		 331 *tx_flags |= TX_CMD_FLG_FULL_TXOP_PROT_MSK;
332
333 if (!ieee80211_is_mgmt(fc))
334 return;
335
336 switch (fc & cpu_to_le16(IEEE80211_FCTL_STYPE)) {
337 case cpu_to_le16(IEEE80211_STYPE_AUTH):
338 case cpu_to_le16(IEEE80211_STYPE_DEAUTH):
339 case cpu_to_le16(IEEE80211_STYPE_ASSOC_REQ):
340 case cpu_to_le16(IEEE80211_STYPE_REASSOC_REQ):
341 *tx_flags &= ~TX_CMD_FLG_RTS_MSK;
342 *tx_flags |= TX_CMD_FLG_CTS_MSK;
343 break;
344 }
37dc70fe
AK		 345 } else if (info->control.rates[0].flags & IEEE80211_TX_RC_USE_CTS_PROTECT) {
346 *tx_flags &= ~TX_CMD_FLG_RTS_MSK;
347 *tx_flags |= TX_CMD_FLG_CTS_MSK;
94597ab2 348 *tx_flags |= TX_CMD_FLG_FULL_TXOP_PROT_MSK;
37dc70fe
AK		 349 }
350}
94597ab2
JB		 351EXPORT_SYMBOL(iwlcore_tx_cmd_protection);
352
37dc70fe 353
7e6a5886
JB		 354static bool iwl_is_channel_extension(struct iwl_priv *priv,
355 enum ieee80211_band band,
356 u16 channel, u8 extension_chan_offset)
47c5196e
TW		 357{
358 const struct iwl_channel_info *ch_info;
359
360 ch_info = iwl_get_channel_info(priv, band, channel);
361 if (!is_channel_valid(ch_info))
7e6a5886 362 return false;
47c5196e 363
d9fe60de 364 if (extension_chan_offset == IEEE80211_HT_PARAM_CHA_SEC_ABOVE)
7aafef1c 365 return !(ch_info->ht40_extension_channel &
689da1b3 366 IEEE80211_CHAN_NO_HT40PLUS);
d9fe60de 367 else if (extension_chan_offset == IEEE80211_HT_PARAM_CHA_SEC_BELOW)
7aafef1c 368 return !(ch_info->ht40_extension_channel &
689da1b3 369 IEEE80211_CHAN_NO_HT40MINUS);
47c5196e 370
7e6a5886 371 return false;
47c5196e
TW		 372}
373
7e6a5886
JB		 374bool iwl_is_ht40_tx_allowed(struct iwl_priv *priv,
375 struct iwl_rxon_context *ctx,
376 struct ieee80211_sta_ht_cap *ht_cap)
47c5196e 377{
7e6a5886
JB		 378 if (!ctx->ht.enabled || !ctx->ht.is_40mhz)
379 return false;
47c5196e 380
7e6a5886
JB		 381 /*
382 * We do not check for IEEE80211_HT_CAP_SUP_WIDTH_20_40
a2b0f02e
WYG		 383 * the bit will not set if it is pure 40MHz case
384 */
7e6a5886
JB		 385 if (ht_cap && !ht_cap->ht_supported)
386 return false;
387
d73e4923 388#ifdef CONFIG_IWLWIFI_DEBUGFS
1e4247d4 389 if (priv->disable_ht40)
7e6a5886 390 return false;
1e4247d4 391#endif
7e6a5886 392
611d3eb7 393 return iwl_is_channel_extension(priv, priv->band,
246ed355 394 le16_to_cpu(ctx->staging.channel),
7e6a5886 395 ctx->ht.extension_chan_offset);
47c5196e 396}
7aafef1c 397EXPORT_SYMBOL(iwl_is_ht40_tx_allowed);
47c5196e 398
2c2f3b33
TW		 399static u16 iwl_adjust_beacon_interval(u16 beacon_val, u16 max_beacon_val)
400{
ea196fdb
JB		 401 u16 new_val;
402 u16 beacon_factor;
403
404 /*
405 * If mac80211 hasn't given us a beacon interval, program
406 * the default into the device (not checking this here
407 * would cause the adjustment below to return the maximum
408 * value, which may break PAN.)
409 */
410 if (!beacon_val)
411 return DEFAULT_BEACON_INTERVAL;
412
413 /*
414 * If the beacon interval we obtained from the peer
415 * is too large, we'll have to wake up more often
416 * (and in IBSS case, we'll beacon too much)
417 *
418 * For example, if max_beacon_val is 4096, and the
419 * requested beacon interval is 7000, we'll have to
420 * use 3500 to be able to wake up on the beacons.
421 *
422 * This could badly influence beacon detection stats.
423 */
2c2f3b33
TW		 424
425 beacon_factor = (beacon_val + max_beacon_val) / max_beacon_val;
426 new_val = beacon_val / beacon_factor;
427
428 if (!new_val)
429 new_val = max_beacon_val;
430
431 return new_val;
432}
433
47313e34 434int iwl_send_rxon_timing(struct iwl_priv *priv, struct iwl_rxon_context *ctx)
2c2f3b33
TW		 435{
436 u64 tsf;
437 s32 interval_tm, rem;
2c2f3b33
TW		 438 struct ieee80211_conf *conf = NULL;
439 u16 beacon_int;
47313e34 440 struct ieee80211_vif *vif = ctx->vif;
2c2f3b33
TW		 441
442 conf = ieee80211_get_hw_conf(priv->hw);
443
948f5a2f
JB		 444 lockdep_assert_held(&priv->mutex);
445
246ed355 446 memset(&ctx->timing, 0, sizeof(struct iwl_rxon_time_cmd));
948f5a2f 447
246ed355
JB		 448 ctx->timing.timestamp = cpu_to_le64(priv->timestamp);
449 ctx->timing.listen_interval = cpu_to_le16(conf->listen_interval);
2c2f3b33 450
47313e34 451 beacon_int = vif ? vif->bss_conf.beacon_int : 0;
2c2f3b33 452
47313e34
JB		 453 /*
454 * TODO: For IBSS we need to get atim_window from mac80211,
455 * for now just always use 0
456 */
457 ctx->timing.atim_window = 0;
2c2f3b33 458
bde4530e 459 if (ctx->ctxid == IWL_RXON_CTX_PAN &&
f1f270b2
JB		 460 (!ctx->vif || ctx->vif->type != NL80211_IFTYPE_STATION) &&
461 iwl_is_associated(priv, IWL_RXON_CTX_BSS) &&
462 priv->contexts[IWL_RXON_CTX_BSS].vif &&
463 priv->contexts[IWL_RXON_CTX_BSS].vif->bss_conf.beacon_int) {
bde4530e
JB		 464 ctx->timing.beacon_interval =
465 priv->contexts[IWL_RXON_CTX_BSS].timing.beacon_interval;
466 beacon_int = le16_to_cpu(ctx->timing.beacon_interval);
f1f270b2
JB		 467 } else if (ctx->ctxid == IWL_RXON_CTX_BSS &&
468 iwl_is_associated(priv, IWL_RXON_CTX_PAN) &&
469 priv->contexts[IWL_RXON_CTX_PAN].vif &&
470 priv->contexts[IWL_RXON_CTX_PAN].vif->bss_conf.beacon_int &&
471 (!iwl_is_associated_ctx(ctx) || !ctx->vif ||
472 !ctx->vif->bss_conf.beacon_int)) {
473 ctx->timing.beacon_interval =
474 priv->contexts[IWL_RXON_CTX_PAN].timing.beacon_interval;
475 beacon_int = le16_to_cpu(ctx->timing.beacon_interval);
bde4530e
JB		 476 } else {
477 beacon_int = iwl_adjust_beacon_interval(beacon_int,
f8525e55 478 priv->hw_params.max_beacon_itrvl * TIME_UNIT);
bde4530e
JB		 479 ctx->timing.beacon_interval = cpu_to_le16(beacon_int);
480 }
2c2f3b33
TW		 481
482 tsf = priv->timestamp; /* tsf is modifed by do_div: copy it */
f8525e55 483 interval_tm = beacon_int * TIME_UNIT;
2c2f3b33 484 rem = do_div(tsf, interval_tm);
246ed355 485 ctx->timing.beacon_init_val = cpu_to_le32(interval_tm - rem);
2c2f3b33 486
47313e34 487 ctx->timing.dtim_period = vif ? (vif->bss_conf.dtim_period ?: 1) : 1;
2491fa42 488
2c2f3b33
TW		 489 IWL_DEBUG_ASSOC(priv,
490 "beacon interval %d beacon timer %d beacon tim %d\n",
246ed355
JB		 491 le16_to_cpu(ctx->timing.beacon_interval),
492 le32_to_cpu(ctx->timing.beacon_init_val),
493 le16_to_cpu(ctx->timing.atim_window));
948f5a2f 494
8f2d3d2a 495 return iwl_send_cmd_pdu(priv, ctx->rxon_timing_cmd,
246ed355 496 sizeof(ctx->timing), &ctx->timing);
2c2f3b33 497}
948f5a2f 498EXPORT_SYMBOL(iwl_send_rxon_timing);
2c2f3b33 499
246ed355
JB		 500void iwl_set_rxon_hwcrypto(struct iwl_priv *priv, struct iwl_rxon_context *ctx,
501 int hw_decrypt)
8ccde88a 502{
246ed355 503 struct iwl_rxon_cmd *rxon = &ctx->staging;
8ccde88a
SO		 504
505 if (hw_decrypt)
506 rxon->filter_flags &= ~RXON_FILTER_DIS_DECRYPT_MSK;
507 else
508 rxon->filter_flags |= RXON_FILTER_DIS_DECRYPT_MSK;
509
510}
511EXPORT_SYMBOL(iwl_set_rxon_hwcrypto);
512
dacefedb 513/* validate RXON structure is valid */
246ed355 514int iwl_check_rxon_cmd(struct iwl_priv *priv, struct iwl_rxon_context *ctx)
8ccde88a 515{
246ed355 516 struct iwl_rxon_cmd *rxon = &ctx->staging;
dacefedb 517 bool error = false;
8ccde88a
SO		 518
519 if (rxon->flags & RXON_FLG_BAND_24G_MSK) {
dacefedb
JB		 520 if (rxon->flags & RXON_FLG_TGJ_NARROW_BAND_MSK) {
521 IWL_WARN(priv, "check 2.4G: wrong narrow\n");
522 error = true;
523 }
524 if (rxon->flags & RXON_FLG_RADAR_DETECT_MSK) {
525 IWL_WARN(priv, "check 2.4G: wrong radar\n");
526 error = true;
527 }
8ccde88a 528 } else {
dacefedb
JB		 529 if (!(rxon->flags & RXON_FLG_SHORT_SLOT_MSK)) {
530 IWL_WARN(priv, "check 5.2G: not short slot!\n");
531 error = true;
532 }
533 if (rxon->flags & RXON_FLG_CCK_MSK) {
534 IWL_WARN(priv, "check 5.2G: CCK!\n");
535 error = true;
536 }
537 }
538 if ((rxon->node_addr[0] | rxon->bssid_addr[0]) & 0x1) {
539 IWL_WARN(priv, "mac/bssid mcast!\n");
540 error = true;
8ccde88a 541 }
8ccde88a
SO		 542
543 /* make sure basic rates 6Mbps and 1Mbps are supported */
dacefedb
JB		 544 if ((rxon->ofdm_basic_rates & IWL_RATE_6M_MASK) == 0 &&
545 (rxon->cck_basic_rates & IWL_RATE_1M_MASK) == 0) {
546 IWL_WARN(priv, "neither 1 nor 6 are basic\n");
547 error = true;
548 }
8ccde88a 549
dacefedb
JB		 550 if (le16_to_cpu(rxon->assoc_id) > 2007) {
551 IWL_WARN(priv, "aid > 2007\n");
552 error = true;
553 }
8ccde88a 554
dacefedb
JB		 555 if ((rxon->flags & (RXON_FLG_CCK_MSK | RXON_FLG_SHORT_SLOT_MSK))
556 == (RXON_FLG_CCK_MSK | RXON_FLG_SHORT_SLOT_MSK)) {
557 IWL_WARN(priv, "CCK and short slot\n");
558 error = true;
559 }
8ccde88a 560
dacefedb
JB		 561 if ((rxon->flags & (RXON_FLG_CCK_MSK | RXON_FLG_AUTO_DETECT_MSK))
562 == (RXON_FLG_CCK_MSK | RXON_FLG_AUTO_DETECT_MSK)) {
563 IWL_WARN(priv, "CCK and auto detect");
564 error = true;
565 }
8ccde88a 566
dacefedb
JB		 567 if ((rxon->flags & (RXON_FLG_AUTO_DETECT_MSK |
568 RXON_FLG_TGG_PROTECT_MSK)) ==
569 RXON_FLG_TGG_PROTECT_MSK) {
570 IWL_WARN(priv, "TGg but no auto-detect\n");
571 error = true;
572 }
8ccde88a
SO		 573
574 if (error)
575 IWL_WARN(priv, "Tuning to channel %d\n",
576 le16_to_cpu(rxon->channel));
577
578 if (error) {
dacefedb
JB		 579 IWL_ERR(priv, "Invalid RXON\n");
580 return -EINVAL;
8ccde88a
SO		 581 }
582 return 0;
583}
584EXPORT_SYMBOL(iwl_check_rxon_cmd);
585
586/**
587 * iwl_full_rxon_required - check if full RXON (vs RXON_ASSOC) cmd is needed
588 * @priv: staging_rxon is compared to active_rxon
589 *
590 * If the RXON structure is changing enough to require a new tune,
591 * or is clearing the RXON_FILTER_ASSOC_MSK, then return 1 to indicate that
592 * a new tune (full RXON command, rather than RXON_ASSOC cmd) is required.
593 */
246ed355
JB		 594int iwl_full_rxon_required(struct iwl_priv *priv,
595 struct iwl_rxon_context *ctx)
8ccde88a 596{
246ed355
JB		 597 const struct iwl_rxon_cmd *staging = &ctx->staging;
598 const struct iwl_rxon_cmd *active = &ctx->active;
599
600#define CHK(cond) \
601 if ((cond)) { \
602 IWL_DEBUG_INFO(priv, "need full RXON - " #cond "\n"); \
603 return 1; \
604 }
605
606#define CHK_NEQ(c1, c2) \
607 if ((c1) != (c2)) { \
608 IWL_DEBUG_INFO(priv, "need full RXON - " \
609 #c1 " != " #c2 " - %d != %d\n", \
610 (c1), (c2)); \
611 return 1; \
612 }
8ccde88a
SO		 613
614 /* These items are only settable from the full RXON command */
246ed355
JB		 615 CHK(!iwl_is_associated_ctx(ctx));
616 CHK(compare_ether_addr(staging->bssid_addr, active->bssid_addr));
617 CHK(compare_ether_addr(staging->node_addr, active->node_addr));
618 CHK(compare_ether_addr(staging->wlap_bssid_addr,
619 active->wlap_bssid_addr));
620 CHK_NEQ(staging->dev_type, active->dev_type);
621 CHK_NEQ(staging->channel, active->channel);
622 CHK_NEQ(staging->air_propagation, active->air_propagation);
623 CHK_NEQ(staging->ofdm_ht_single_stream_basic_rates,
624 active->ofdm_ht_single_stream_basic_rates);
625 CHK_NEQ(staging->ofdm_ht_dual_stream_basic_rates,
626 active->ofdm_ht_dual_stream_basic_rates);
627 CHK_NEQ(staging->ofdm_ht_triple_stream_basic_rates,
628 active->ofdm_ht_triple_stream_basic_rates);
629 CHK_NEQ(staging->assoc_id, active->assoc_id);
8ccde88a
SO		 630
631 /* flags, filter_flags, ofdm_basic_rates, and cck_basic_rates can
632 * be updated with the RXON_ASSOC command -- however only some
633 * flag transitions are allowed using RXON_ASSOC */
634
635 /* Check if we are not switching bands */
246ed355
JB		 636 CHK_NEQ(staging->flags & RXON_FLG_BAND_24G_MSK,
637 active->flags & RXON_FLG_BAND_24G_MSK);
8ccde88a
SO		 638
639 /* Check if we are switching association toggle */
246ed355
JB		 640 CHK_NEQ(staging->filter_flags & RXON_FILTER_ASSOC_MSK,
641 active->filter_flags & RXON_FILTER_ASSOC_MSK);
642
643#undef CHK
644#undef CHK_NEQ
8ccde88a
SO		 645
646 return 0;
647}
648EXPORT_SYMBOL(iwl_full_rxon_required);
649
76d04815
JB		 650u8 iwl_rate_get_lowest_plcp(struct iwl_priv *priv,
651 struct iwl_rxon_context *ctx)
8ccde88a 652{
4a02886b
JB		 653 /*
654 * Assign the lowest rate -- should really get this from
655 * the beacon skb from mac80211.
656 */
246ed355 657 if (ctx->staging.flags & RXON_FLG_BAND_24G_MSK)
8ccde88a
SO		 658 return IWL_RATE_1M_PLCP;
659 else
660 return IWL_RATE_6M_PLCP;
661}
662EXPORT_SYMBOL(iwl_rate_get_lowest_plcp);
663
246ed355
JB		 664static void _iwl_set_rxon_ht(struct iwl_priv *priv,
665 struct iwl_ht_config *ht_conf,
666 struct iwl_rxon_context *ctx)
47c5196e 667{
246ed355 668 struct iwl_rxon_cmd *rxon = &ctx->staging;
47c5196e 669
7e6a5886 670 if (!ctx->ht.enabled) {
a2b0f02e 671 rxon->flags &= ~(RXON_FLG_CHANNEL_MODE_MSK |
42eb7c64 672 RXON_FLG_CTRL_CHANNEL_LOC_HI_MSK |
7aafef1c 673 RXON_FLG_HT40_PROT_MSK |
42eb7c64 674 RXON_FLG_HT_PROT_MSK);
47c5196e 675 return;
42eb7c64 676 }
47c5196e 677
7e6a5886 678 /* FIXME: if the definition of ht.protection changed, the "translation"
a2b0f02e
WYG		 679 * will be needed for rxon->flags
680 */
7e6a5886 681 rxon->flags |= cpu_to_le32(ctx->ht.protection << RXON_FLG_HT_OPERATING_MODE_POS);
a2b0f02e
WYG		 682
683 /* Set up channel bandwidth:
7aafef1c 684 * 20 MHz only, 20/40 mixed or pure 40 if ht40 ok */
a2b0f02e
WYG		 685 /* clear the HT channel mode before set the mode */
686 rxon->flags &= ~(RXON_FLG_CHANNEL_MODE_MSK |
687 RXON_FLG_CTRL_CHANNEL_LOC_HI_MSK);
7e6a5886 688 if (iwl_is_ht40_tx_allowed(priv, ctx, NULL)) {
7aafef1c 689 /* pure ht40 */
7e6a5886 690 if (ctx->ht.protection == IEEE80211_HT_OP_MODE_PROTECTION_20MHZ) {
a2b0f02e 691 rxon->flags |= RXON_FLG_CHANNEL_MODE_PURE_40;
508b08e7 692 /* Note: control channel is opposite of extension channel */
7e6a5886 693 switch (ctx->ht.extension_chan_offset) {
508b08e7
WYG		 694 case IEEE80211_HT_PARAM_CHA_SEC_ABOVE:
695 rxon->flags &= ~RXON_FLG_CTRL_CHANNEL_LOC_HI_MSK;
696 break;
697 case IEEE80211_HT_PARAM_CHA_SEC_BELOW:
698 rxon->flags |= RXON_FLG_CTRL_CHANNEL_LOC_HI_MSK;
699 break;
700 }
701 } else {
a2b0f02e 702 /* Note: control channel is opposite of extension channel */
7e6a5886 703 switch (ctx->ht.extension_chan_offset) {
a2b0f02e
WYG		 704 case IEEE80211_HT_PARAM_CHA_SEC_ABOVE:
705 rxon->flags &= ~(RXON_FLG_CTRL_CHANNEL_LOC_HI_MSK);
706 rxon->flags |= RXON_FLG_CHANNEL_MODE_MIXED;
707 break;
708 case IEEE80211_HT_PARAM_CHA_SEC_BELOW:
709 rxon->flags |= RXON_FLG_CTRL_CHANNEL_LOC_HI_MSK;
710 rxon->flags |= RXON_FLG_CHANNEL_MODE_MIXED;
711 break;
712 case IEEE80211_HT_PARAM_CHA_SEC_NONE:
713 default:
714 /* channel location only valid if in Mixed mode */
715 IWL_ERR(priv, "invalid extension channel offset\n");
716 break;
717 }
718 }
719 } else {
720 rxon->flags |= RXON_FLG_CHANNEL_MODE_LEGACY;
47c5196e
TW		 721 }
722
45823531 723 if (priv->cfg->ops->hcmd->set_rxon_chain)
246ed355 724 priv->cfg->ops->hcmd->set_rxon_chain(priv, ctx);
47c5196e 725
02bb1bea 726 IWL_DEBUG_ASSOC(priv, "rxon flags 0x%X operation mode :0x%X "
ae5eb026 727 "extension channel offset 0x%x\n",
7e6a5886
JB		 728 le32_to_cpu(rxon->flags), ctx->ht.protection,
729 ctx->ht.extension_chan_offset);
47c5196e 730}
246ed355
JB		 731
732void iwl_set_rxon_ht(struct iwl_priv *priv, struct iwl_ht_config *ht_conf)
733{
734 struct iwl_rxon_context *ctx;
735
736 for_each_context(priv, ctx)
737 _iwl_set_rxon_ht(priv, ht_conf, ctx);
738}
47c5196e
TW		 739EXPORT_SYMBOL(iwl_set_rxon_ht);
740
246ed355 741/* Return valid, unused, channel for a passive scan to reset the RF */
14023641 742u8 iwl_get_single_channel_number(struct iwl_priv *priv,
246ed355 743 enum ieee80211_band band)
14023641
AK		 744{
745 const struct iwl_channel_info *ch_info;
746 int i;
747 u8 channel = 0;
246ed355
JB		 748 u8 min, max;
749 struct iwl_rxon_context *ctx;
14023641 750
14023641 751 if (band == IEEE80211_BAND_5GHZ) {
246ed355
JB		 752 min = 14;
753 max = priv->channel_count;
14023641 754 } else {
246ed355
JB		 755 min = 0;
756 max = 14;
757 }
758
759 for (i = min; i < max; i++) {
760 bool busy = false;
761
762 for_each_context(priv, ctx) {
763 busy = priv->channel_info[i].channel ==
764 le16_to_cpu(ctx->staging.channel);
765 if (busy)
766 break;
14023641 767 }
246ed355
JB		 768
769 if (busy)
770 continue;
771
772 channel = priv->channel_info[i].channel;
773 ch_info = iwl_get_channel_info(priv, band, channel);
774 if (is_channel_valid(ch_info))
775 break;
14023641
AK		 776 }
777
778 return channel;
779}
780EXPORT_SYMBOL(iwl_get_single_channel_number);
781
bf85ea4f 782/**
3edb5fd6
SZ		 783 * iwl_set_rxon_channel - Set the band and channel values in staging RXON
784 * @ch: requested channel as a pointer to struct ieee80211_channel
bf85ea4f 785
bf85ea4f 786 * NOTE: Does not commit to the hardware; it sets appropriate bit fields
3edb5fd6 787 * in the staging RXON flag structure based on the ch->band
bf85ea4f 788 */
246ed355
JB		 789int iwl_set_rxon_channel(struct iwl_priv *priv, struct ieee80211_channel *ch,
790 struct iwl_rxon_context *ctx)
bf85ea4f 791{
17e72782 792 enum ieee80211_band band = ch->band;
81e95430 793 u16 channel = ch->hw_value;
17e72782 794
246ed355 795 if ((le16_to_cpu(ctx->staging.channel) == channel) &&
bf85ea4f
AK		 796 (priv->band == band))
797 return 0;
798
246ed355 799 ctx->staging.channel = cpu_to_le16(channel);
bf85ea4f 800 if (band == IEEE80211_BAND_5GHZ)
246ed355 801 ctx->staging.flags &= ~RXON_FLG_BAND_24G_MSK;
bf85ea4f 802 else
246ed355 803 ctx->staging.flags |= RXON_FLG_BAND_24G_MSK;
bf85ea4f
AK		 804
805 priv->band = band;
806
e1623446 807 IWL_DEBUG_INFO(priv, "Staging channel set to %d [%d]\n", channel, band);
bf85ea4f
AK		 808
809 return 0;
810}
c7de35cd 811EXPORT_SYMBOL(iwl_set_rxon_channel);
bf85ea4f 812
79d07325 813void iwl_set_flags_for_band(struct iwl_priv *priv,
246ed355 814 struct iwl_rxon_context *ctx,
79d07325
WYG		 815 enum ieee80211_band band,
816 struct ieee80211_vif *vif)
8ccde88a
SO		 817{
818 if (band == IEEE80211_BAND_5GHZ) {
246ed355 819 ctx->staging.flags &=
8ccde88a
SO		 820 ~(RXON_FLG_BAND_24G_MSK | RXON_FLG_AUTO_DETECT_MSK
821 | RXON_FLG_CCK_MSK);
246ed355 822 ctx->staging.flags |= RXON_FLG_SHORT_SLOT_MSK;
8ccde88a
SO		 823 } else {
824 /* Copied from iwl_post_associate() */
c213d745 825 if (vif && vif->bss_conf.use_short_slot)
246ed355 826 ctx->staging.flags |= RXON_FLG_SHORT_SLOT_MSK;
8ccde88a 827 else
246ed355 828 ctx->staging.flags &= ~RXON_FLG_SHORT_SLOT_MSK;
8ccde88a 829
246ed355
JB		 830 ctx->staging.flags |= RXON_FLG_BAND_24G_MSK;
831 ctx->staging.flags |= RXON_FLG_AUTO_DETECT_MSK;
832 ctx->staging.flags &= ~RXON_FLG_CCK_MSK;
8ccde88a
SO		 833 }
834}
79d07325 835EXPORT_SYMBOL(iwl_set_flags_for_band);
8ccde88a
SO		 836
837/*
838 * initialize rxon structure with default values from eeprom
839 */
1dda6d28 840void iwl_connection_init_rx_config(struct iwl_priv *priv,
d0fe478c 841 struct iwl_rxon_context *ctx)
8ccde88a
SO		 842{
843 const struct iwl_channel_info *ch_info;
844
246ed355 845 memset(&ctx->staging, 0, sizeof(ctx->staging));
8ccde88a 846
d0fe478c
JB		 847 if (!ctx->vif) {
848 ctx->staging.dev_type = ctx->unused_devtype;
849 } else switch (ctx->vif->type) {
8ccde88a 850 case NL80211_IFTYPE_AP:
d0fe478c 851 ctx->staging.dev_type = ctx->ap_devtype;
8ccde88a
SO		 852 break;
853
854 case NL80211_IFTYPE_STATION:
d0fe478c 855 ctx->staging.dev_type = ctx->station_devtype;
246ed355 856 ctx->staging.filter_flags = RXON_FILTER_ACCEPT_GRP_MSK;
8ccde88a
SO		 857 break;
858
859 case NL80211_IFTYPE_ADHOC:
d0fe478c 860 ctx->staging.dev_type = ctx->ibss_devtype;
246ed355
JB		 861 ctx->staging.flags = RXON_FLG_SHORT_PREAMBLE_MSK;
862 ctx->staging.filter_flags = RXON_FILTER_BCON_AWARE_MSK |
8ccde88a
SO		 863 RXON_FILTER_ACCEPT_GRP_MSK;
864 break;
865
8ccde88a 866 default:
d0fe478c
JB		 867 IWL_ERR(priv, "Unsupported interface type %d\n",
868 ctx->vif->type);
8ccde88a
SO		 869 break;
870 }
871
872#if 0
873 /* TODO: Figure out when short_preamble would be set and cache from
874 * that */
875 if (!hw_to_local(priv->hw)->short_preamble)
246ed355 876 ctx->staging.flags &= ~RXON_FLG_SHORT_PREAMBLE_MSK;
8ccde88a 877 else
246ed355 878 ctx->staging.flags |= RXON_FLG_SHORT_PREAMBLE_MSK;
8ccde88a
SO		 879#endif
880
881 ch_info = iwl_get_channel_info(priv, priv->band,
246ed355 882 le16_to_cpu(ctx->active.channel));
8ccde88a
SO		 883
884 if (!ch_info)
885 ch_info = &priv->channel_info[0];
886
246ed355 887 ctx->staging.channel = cpu_to_le16(ch_info->channel);
8ccde88a
SO		 888 priv->band = ch_info->band;
889
d0fe478c 890 iwl_set_flags_for_band(priv, ctx, priv->band, ctx->vif);
8ccde88a 891
246ed355 892 ctx->staging.ofdm_basic_rates =
8ccde88a 893 (IWL_OFDM_RATES_MASK >> IWL_FIRST_OFDM_RATE) & 0xFF;
246ed355 894 ctx->staging.cck_basic_rates =
8ccde88a
SO		 895 (IWL_CCK_RATES_MASK >> IWL_FIRST_CCK_RATE) & 0xF;
896
a2b0f02e 897 /* clear both MIX and PURE40 mode flag */
246ed355 898 ctx->staging.flags &= ~(RXON_FLG_CHANNEL_MODE_MIXED |
a2b0f02e 899 RXON_FLG_CHANNEL_MODE_PURE_40);
d0fe478c
JB		 900 if (ctx->vif)
901 memcpy(ctx->staging.node_addr, ctx->vif->addr, ETH_ALEN);
7684c408 902
246ed355
JB		 903 ctx->staging.ofdm_ht_single_stream_basic_rates = 0xff;
904 ctx->staging.ofdm_ht_dual_stream_basic_rates = 0xff;
905 ctx->staging.ofdm_ht_triple_stream_basic_rates = 0xff;
8ccde88a
SO		 906}
907EXPORT_SYMBOL(iwl_connection_init_rx_config);
908
79d07325 909void iwl_set_rate(struct iwl_priv *priv)
8ccde88a
SO		 910{
911 const struct ieee80211_supported_band *hw = NULL;
912 struct ieee80211_rate *rate;
246ed355 913 struct iwl_rxon_context *ctx;
8ccde88a
SO		 914 int i;
915
916 hw = iwl_get_hw_mode(priv, priv->band);
917 if (!hw) {
918 IWL_ERR(priv, "Failed to set rate: unable to get hw mode\n");
919 return;
920 }
921
922 priv->active_rate = 0;
8ccde88a
SO		 923
924 for (i = 0; i < hw->n_bitrates; i++) {
925 rate = &(hw->bitrates[i]);
5027309b 926 if (rate->hw_value < IWL_RATE_COUNT_LEGACY)
8ccde88a
SO		 927 priv->active_rate |= (1 << rate->hw_value);
928 }
929
4a02886b 930 IWL_DEBUG_RATE(priv, "Set active_rate = %0x\n", priv->active_rate);
8ccde88a 931
246ed355
JB		 932 for_each_context(priv, ctx) {
933 ctx->staging.cck_basic_rates =
934 (IWL_CCK_BASIC_RATES_MASK >> IWL_FIRST_CCK_RATE) & 0xF;
4a02886b 935
246ed355
JB		 936 ctx->staging.ofdm_basic_rates =
937 (IWL_OFDM_BASIC_RATES_MASK >> IWL_FIRST_OFDM_RATE) & 0xFF;
938 }
8ccde88a 939}
79d07325
WYG		 940EXPORT_SYMBOL(iwl_set_rate);
941
942void iwl_chswitch_done(struct iwl_priv *priv, bool is_success)
943{
8bd413e6
JB		 944 /*
945 * MULTI-FIXME
946 * See iwl_mac_channel_switch.
947 */
948 struct iwl_rxon_context *ctx = &priv->contexts[IWL_RXON_CTX_BSS];
949
79d07325
WYG		 950 if (test_bit(STATUS_EXIT_PENDING, &priv->status))
951 return;
952
953 if (priv->switch_rxon.switch_in_progress) {
8bd413e6 954 ieee80211_chswitch_done(ctx->vif, is_success);
79d07325
WYG		 955 mutex_lock(&priv->mutex);
956 priv->switch_rxon.switch_in_progress = false;
957 mutex_unlock(&priv->mutex);
958 }
959}
960EXPORT_SYMBOL(iwl_chswitch_done);
8ccde88a
SO		 961
962void iwl_rx_csa(struct iwl_priv *priv, struct iwl_rx_mem_buffer *rxb)
963{
2f301227 964 struct iwl_rx_packet *pkt = rxb_addr(rxb);
8ccde88a 965 struct iwl_csa_notification *csa = &(pkt->u.csa_notif);
8bd413e6
JB		 966 /*
967 * MULTI-FIXME
968 * See iwl_mac_channel_switch.
969 */
246ed355 970 struct iwl_rxon_context *ctx = &priv->contexts[IWL_RXON_CTX_BSS];
246ed355 971 struct iwl_rxon_cmd *rxon = (void *)&ctx->active;
4a56e965 972
0924e519
WYG		 973 if (priv->switch_rxon.switch_in_progress) {
974 if (!le32_to_cpu(csa->status) &&
975 (csa->channel == priv->switch_rxon.channel)) {
976 rxon->channel = csa->channel;
246ed355 977 ctx->staging.channel = csa->channel;
0924e519
WYG		 978 IWL_DEBUG_11H(priv, "CSA notif: channel %d\n",
979 le16_to_cpu(csa->channel));
79d07325
WYG		 980 iwl_chswitch_done(priv, true);
981 } else {
0924e519
WYG		 982 IWL_ERR(priv, "CSA notif (fail) : channel %d\n",
983 le16_to_cpu(csa->channel));
79d07325
WYG		 984 iwl_chswitch_done(priv, false);
985 }
0924e519 986 }
8ccde88a
SO		 987}
988EXPORT_SYMBOL(iwl_rx_csa);
989
990#ifdef CONFIG_IWLWIFI_DEBUG
246ed355
JB		 991void iwl_print_rx_config_cmd(struct iwl_priv *priv,
992 struct iwl_rxon_context *ctx)
8ccde88a 993{
246ed355 994 struct iwl_rxon_cmd *rxon = &ctx->staging;
8ccde88a 995
e1623446 996 IWL_DEBUG_RADIO(priv, "RX CONFIG:\n");
3d816c77 997 iwl_print_hex_dump(priv, IWL_DL_RADIO, (u8 *) rxon, sizeof(*rxon));
e1623446
TW		 998 IWL_DEBUG_RADIO(priv, "u16 channel: 0x%x\n", le16_to_cpu(rxon->channel));
999 IWL_DEBUG_RADIO(priv, "u32 flags: 0x%08X\n", le32_to_cpu(rxon->flags));
1000 IWL_DEBUG_RADIO(priv, "u32 filter_flags: 0x%08x\n",
8ccde88a 1001 le32_to_cpu(rxon->filter_flags));
e1623446
TW		 1002 IWL_DEBUG_RADIO(priv, "u8 dev_type: 0x%x\n", rxon->dev_type);
1003 IWL_DEBUG_RADIO(priv, "u8 ofdm_basic_rates: 0x%02x\n",
8ccde88a 1004 rxon->ofdm_basic_rates);
e1623446
TW		 1005 IWL_DEBUG_RADIO(priv, "u8 cck_basic_rates: 0x%02x\n", rxon->cck_basic_rates);
1006 IWL_DEBUG_RADIO(priv, "u8[6] node_addr: %pM\n", rxon->node_addr);
1007 IWL_DEBUG_RADIO(priv, "u8[6] bssid_addr: %pM\n", rxon->bssid_addr);
1008 IWL_DEBUG_RADIO(priv, "u16 assoc_id: 0x%x\n", le16_to_cpu(rxon->assoc_id));
8ccde88a 1009}
a643565e 1010EXPORT_SYMBOL(iwl_print_rx_config_cmd);
6686d17e 1011#endif
8ccde88a
SO		 1012/**
1013 * iwl_irq_handle_error - called for HW or SW error interrupt from card
1014 */
1015void iwl_irq_handle_error(struct iwl_priv *priv)
1016{
1017 /* Set the FW error flag -- cleared on iwl_down */
1018 set_bit(STATUS_FW_ERROR, &priv->status);
1019
1020 /* Cancel currently queued command. */
1021 clear_bit(STATUS_HCMD_ACTIVE, &priv->status);
1022
459bc732
SZ		 1023 IWL_ERR(priv, "Loaded firmware version: %s\n",
1024 priv->hw->wiphy->fw_version);
1025
3a3ff72c 1026 priv->cfg->ops->lib->dump_nic_error_log(priv);
696bdee3
WYG		 1027 if (priv->cfg->ops->lib->dump_csr)
1028 priv->cfg->ops->lib->dump_csr(priv);
1b3eb823
WYG		 1029 if (priv->cfg->ops->lib->dump_fh)
1030 priv->cfg->ops->lib->dump_fh(priv, NULL, false);
b03d7d0f 1031 priv->cfg->ops->lib->dump_nic_event_log(priv, false, NULL, false);
8ccde88a 1032#ifdef CONFIG_IWLWIFI_DEBUG
c341ddb2 1033 if (iwl_get_debug_level(priv) & IWL_DL_FW_ERRORS)
246ed355
JB		 1034 iwl_print_rx_config_cmd(priv,
1035 &priv->contexts[IWL_RXON_CTX_BSS]);
8ccde88a
SO		 1036#endif
1037
1038 wake_up_interruptible(&priv->wait_command_queue);
1039
1040 /* Keep the restart process from trying to send host
1041 * commands by clearing the INIT status bit */
1042 clear_bit(STATUS_READY, &priv->status);
1043
1044 if (!test_bit(STATUS_EXIT_PENDING, &priv->status)) {
e1623446 1045 IWL_DEBUG(priv, IWL_DL_FW_ERRORS,
8ccde88a
SO		 1046 "Restarting adapter due to uCode error.\n");
1047
8ccde88a
SO		 1048 if (priv->cfg->mod_params->restart_fw)
1049 queue_work(priv->workqueue, &priv->restart);
1050 }
1051}
1052EXPORT_SYMBOL(iwl_irq_handle_error);
1053
f8e200de 1054static int iwl_apm_stop_master(struct iwl_priv *priv)
d68b603c 1055{
5220af0c 1056 int ret = 0;
d68b603c 1057
5220af0c 1058 /* stop device's busmaster DMA activity */
d68b603c
AK		 1059 iwl_set_bit(priv, CSR_RESET, CSR_RESET_REG_FLAG_STOP_MASTER);
1060
5220af0c 1061 ret = iwl_poll_bit(priv, CSR_RESET, CSR_RESET_REG_FLAG_MASTER_DISABLED,
d68b603c 1062 CSR_RESET_REG_FLAG_MASTER_DISABLED, 100);
5220af0c
BC		 1063 if (ret)
1064 IWL_WARN(priv, "Master Disable Timed Out, 100 usec\n");
d68b603c 1065
d68b603c
AK		 1066 IWL_DEBUG_INFO(priv, "stop master\n");
1067
5220af0c 1068 return ret;
d68b603c 1069}
d68b603c
AK		 1070
1071void iwl_apm_stop(struct iwl_priv *priv)
1072{
fadb3582
BC		 1073 IWL_DEBUG_INFO(priv, "Stop card, put in low power state\n");
1074
5220af0c 1075 /* Stop device's DMA activity */
d68b603c
AK		 1076 iwl_apm_stop_master(priv);
1077
5220af0c 1078 /* Reset the entire device */
d68b603c
AK		 1079 iwl_set_bit(priv, CSR_RESET, CSR_RESET_REG_FLAG_SW_RESET);
1080
1081 udelay(10);
5220af0c
BC		 1082
1083 /*
1084 * Clear "initialization complete" bit to move adapter from
1085 * D0A* (powered-up Active) --> D0U* (Uninitialized) state.
1086 */
d68b603c 1087 iwl_clear_bit(priv, CSR_GP_CNTRL, CSR_GP_CNTRL_REG_FLAG_INIT_DONE);
d68b603c
AK		 1088}
1089EXPORT_SYMBOL(iwl_apm_stop);
1090
fadb3582
BC		 1091
1092/*
1093 * Start up NIC's basic functionality after it has been reset
1094 * (e.g. after platform boot, or shutdown via iwl_apm_stop())
1095 * NOTE: This does not load uCode nor start the embedded processor
1096 */
1097int iwl_apm_init(struct iwl_priv *priv)
1098{
1099 int ret = 0;
1100 u16 lctl;
1101
1102 IWL_DEBUG_INFO(priv, "Init card's basic functions\n");
1103
1104 /*
1105 * Use "set_bit" below rather than "write", to preserve any hardware
1106 * bits already set by default after reset.
1107 */
1108
1109 /* Disable L0S exit timer (platform NMI Work/Around) */
1110 iwl_set_bit(priv, CSR_GIO_CHICKEN_BITS,
1111 CSR_GIO_CHICKEN_BITS_REG_BIT_DIS_L0S_EXIT_TIMER);
1112
1113 /*
1114 * Disable L0s without affecting L1;
1115 * don't wait for ICH L0s (ICH bug W/A)
1116 */
1117 iwl_set_bit(priv, CSR_GIO_CHICKEN_BITS,
1118 CSR_GIO_CHICKEN_BITS_REG_BIT_L1A_NO_L0S_RX);
1119
1120 /* Set FH wait threshold to maximum (HW error during stress W/A) */
1121 iwl_set_bit(priv, CSR_DBG_HPET_MEM_REG, CSR_DBG_HPET_MEM_REG_VAL);
1122
1123 /*
1124 * Enable HAP INTA (interrupt from management bus) to
1125 * wake device's PCI Express link L1a -> L0s
1126 * NOTE: This is no-op for 3945 (non-existant bit)
1127 */
1128 iwl_set_bit(priv, CSR_HW_IF_CONFIG_REG,
1129 CSR_HW_IF_CONFIG_REG_BIT_HAP_WAKE_L1A);
1130
1131 /*
a6c5c731
BC		 1132 * HW bug W/A for instability in PCIe bus L0->L0S->L1 transition.
1133 * Check if BIOS (or OS) enabled L1-ASPM on this device.
1134 * If so (likely), disable L0S, so device moves directly L0->L1;
1135 * costs negligible amount of power savings.
1136 * If not (unlikely), enable L0S, so there is at least some
1137 * power savings, even without L1.
fadb3582 1138 */
7cb1b088 1139 if (priv->cfg->base_params->set_l0s) {
fadb3582
BC		 1140 lctl = iwl_pcie_link_ctl(priv);
1141 if ((lctl & PCI_CFG_LINK_CTRL_VAL_L1_EN) ==
1142 PCI_CFG_LINK_CTRL_VAL_L1_EN) {
1143 /* L1-ASPM enabled; disable(!) L0S */
1144 iwl_set_bit(priv, CSR_GIO_REG,
1145 CSR_GIO_REG_VAL_L0S_ENABLED);
1146 IWL_DEBUG_POWER(priv, "L1 Enabled; Disabling L0S\n");
1147 } else {
1148 /* L1-ASPM disabled; enable(!) L0S */
1149 iwl_clear_bit(priv, CSR_GIO_REG,
1150 CSR_GIO_REG_VAL_L0S_ENABLED);
1151 IWL_DEBUG_POWER(priv, "L1 Disabled; Enabling L0S\n");
1152 }
1153 }
1154
1155 /* Configure analog phase-lock-loop before activating to D0A */
7cb1b088
WYG		 1156 if (priv->cfg->base_params->pll_cfg_val)
1157 iwl_set_bit(priv, CSR_ANA_PLL_CFG,
1158 priv->cfg->base_params->pll_cfg_val);
fadb3582
BC		 1159
1160 /*
1161 * Set "initialization complete" bit to move adapter from
1162 * D0U* --> D0A* (powered-up active) state.
1163 */
1164 iwl_set_bit(priv, CSR_GP_CNTRL, CSR_GP_CNTRL_REG_FLAG_INIT_DONE);
1165
1166 /*
1167 * Wait for clock stabilization; once stabilized, access to
1168 * device-internal resources is supported, e.g. iwl_write_prph()
1169 * and accesses to uCode SRAM.
1170 */
1171 ret = iwl_poll_bit(priv, CSR_GP_CNTRL,
1172 CSR_GP_CNTRL_REG_FLAG_MAC_CLOCK_READY,
1173 CSR_GP_CNTRL_REG_FLAG_MAC_CLOCK_READY, 25000);
1174 if (ret < 0) {
1175 IWL_DEBUG_INFO(priv, "Failed to init the card\n");
1176 goto out;
1177 }
1178
1179 /*
1180 * Enable DMA and BSM (if used) clocks, wait for them to stabilize.
1181 * BSM (Boostrap State Machine) is only in 3945 and 4965;
1182 * later devices (i.e. 5000 and later) have non-volatile SRAM,
1183 * and don't need BSM to restore data after power-saving sleep.
1184 *
1185 * Write to "CLK_EN_REG"; "1" bits enable clocks, while "0" bits
1186 * do not disable clocks. This preserves any hardware bits already
1187 * set by default in "CLK_CTRL_REG" after reset.
1188 */
7cb1b088 1189 if (priv->cfg->base_params->use_bsm)
fadb3582
BC		 1190 iwl_write_prph(priv, APMG_CLK_EN_REG,
1191 APMG_CLK_VAL_DMA_CLK_RQT | APMG_CLK_VAL_BSM_CLK_RQT);
1192 else
1193 iwl_write_prph(priv, APMG_CLK_EN_REG,
1194 APMG_CLK_VAL_DMA_CLK_RQT);
1195 udelay(20);
1196
1197 /* Disable L1-Active */
1198 iwl_set_bits_prph(priv, APMG_PCIDEV_STT_REG,
1199 APMG_PCIDEV_STT_VAL_L1_ACT_DIS);
1200
1201out:
1202 return ret;
1203}
1204EXPORT_SYMBOL(iwl_apm_init);
1205
1206
630fe9b6
TW		 1207int iwl_set_tx_power(struct iwl_priv *priv, s8 tx_power, bool force)
1208{
a25a66ac
SG		 1209 int ret;
1210 s8 prev_tx_power;
1211
1212 lockdep_assert_held(&priv->mutex);
1213
1214 if (priv->tx_power_user_lmt == tx_power && !force)
1215 return 0;
1216
1217 if (!priv->cfg->ops->lib->send_tx_power)
1218 return -EOPNOTSUPP;
5eadd94b 1219
b744cb79
WYG		 1220 if (tx_power < IWLAGN_TX_POWER_TARGET_POWER_MIN) {
1221 IWL_WARN(priv,
1222 "Requested user TXPOWER %d below lower limit %d.\n",
daf518de 1223 tx_power,
b744cb79 1224 IWLAGN_TX_POWER_TARGET_POWER_MIN);
630fe9b6
TW		 1225 return -EINVAL;
1226 }
1227
dc1b0973 1228 if (tx_power > priv->tx_power_device_lmt) {
08f2d58d
WYG		 1229 IWL_WARN(priv,
1230 "Requested user TXPOWER %d above upper limit %d.\n",
dc1b0973 1231 tx_power, priv->tx_power_device_lmt);
630fe9b6
TW		 1232 return -EINVAL;
1233 }
1234
a25a66ac
SG		 1235 if (!iwl_is_ready_rf(priv))
1236 return -EIO;
630fe9b6 1237
a25a66ac
SG		 1238 /* scan complete use tx_power_next, need to be updated */
1239 priv->tx_power_next = tx_power;
1240 if (test_bit(STATUS_SCANNING, &priv->status) && !force) {
1241 IWL_DEBUG_INFO(priv, "Deferring tx power set while scanning\n");
1242 return 0;
5eadd94b 1243 }
630fe9b6 1244
a25a66ac
SG		 1245 prev_tx_power = priv->tx_power_user_lmt;
1246 priv->tx_power_user_lmt = tx_power;
1247
1248 ret = priv->cfg->ops->lib->send_tx_power(priv);
1249
1250 /* if fail to set tx_power, restore the orig. tx power */
1251 if (ret) {
1252 priv->tx_power_user_lmt = prev_tx_power;
1253 priv->tx_power_next = prev_tx_power;
1254 }
630fe9b6
TW		 1255 return ret;
1256}
1257EXPORT_SYMBOL(iwl_set_tx_power);
1258
ef850d7c 1259irqreturn_t iwl_isr_legacy(int irq, void *data)
f17d08a6
AK		 1260{
1261 struct iwl_priv *priv = data;
1262 u32 inta, inta_mask;
1263 u32 inta_fh;
6e8cc38d 1264 unsigned long flags;
f17d08a6
AK		 1265 if (!priv)
1266 return IRQ_NONE;
1267
6e8cc38d 1268 spin_lock_irqsave(&priv->lock, flags);
f17d08a6
AK		 1269
1270 /* Disable (but don't clear!) interrupts here to avoid
1271 * back-to-back ISRs and sporadic interrupts from our NIC.
1272 * If we have something to service, the tasklet will re-enable ints.
1273 * If we *don't* have something, we'll re-enable before leaving here. */
1274 inta_mask = iwl_read32(priv, CSR_INT_MASK); /* just for debug */
1275 iwl_write32(priv, CSR_INT_MASK, 0x00000000);
1276
1277 /* Discover which interrupts are active/pending */
1278 inta = iwl_read32(priv, CSR_INT);
1279 inta_fh = iwl_read32(priv, CSR_FH_INT_STATUS);
1280
1281 /* Ignore interrupt if there's nothing in NIC to service.
1282 * This may be due to IRQ shared with another device,
1283 * or due to sporadic interrupts thrown from our NIC. */
1284 if (!inta && !inta_fh) {
1285 IWL_DEBUG_ISR(priv, "Ignore interrupt, inta == 0, inta_fh == 0\n");
1286 goto none;
1287 }
1288
1289 if ((inta == 0xFFFFFFFF) || ((inta & 0xFFFFFFF0) == 0xa5a5a5a0)) {
1290 /* Hardware disappeared. It might have already raised
1291 * an interrupt */
1292 IWL_WARN(priv, "HARDWARE GONE?? INTA == 0x%08x\n", inta);
1293 goto unplugged;
1294 }
1295
1296 IWL_DEBUG_ISR(priv, "ISR inta 0x%08x, enabled 0x%08x, fh 0x%08x\n",
1297 inta, inta_mask, inta_fh);
1298
1299 inta &= ~CSR_INT_BIT_SCD;
1300
1301 /* iwl_irq_tasklet() will service interrupts and re-enable them */
1302 if (likely(inta || inta_fh))
1303 tasklet_schedule(&priv->irq_tasklet);
1304
1305 unplugged:
6e8cc38d 1306 spin_unlock_irqrestore(&priv->lock, flags);
f17d08a6
AK		 1307 return IRQ_HANDLED;
1308
1309 none:
1310 /* re-enable interrupts here since we don't have anything to service. */
1311 /* only Re-enable if diabled by irq */
1312 if (test_bit(STATUS_INT_ENABLED, &priv->status))
1313 iwl_enable_interrupts(priv);
6e8cc38d 1314 spin_unlock_irqrestore(&priv->lock, flags);
f17d08a6
AK		 1315 return IRQ_NONE;
1316}
ef850d7c 1317EXPORT_SYMBOL(iwl_isr_legacy);
f17d08a6 1318
65b52bde 1319void iwl_send_bt_config(struct iwl_priv *priv)
17f841cd
SO		 1320{
1321 struct iwl_bt_cmd bt_cmd = {
456d0f76
WYG		 1322 .lead_time = BT_LEAD_TIME_DEF,
1323 .max_kill = BT_MAX_KILL_DEF,
17f841cd
SO		 1324 .kill_ack_mask = 0,
1325 .kill_cts_mask = 0,
1326 };
1327
06702a73
WYG		 1328 if (!bt_coex_active)
1329 bt_cmd.flags = BT_COEX_DISABLE;
1330 else
1331 bt_cmd.flags = BT_COEX_ENABLE;
1332
1333 IWL_DEBUG_INFO(priv, "BT coex %s\n",
1334 (bt_cmd.flags == BT_COEX_DISABLE) ? "disable" : "active");
1335
65b52bde
JB		 1336 if (iwl_send_cmd_pdu(priv, REPLY_BT_CONFIG,
1337 sizeof(struct iwl_bt_cmd), &bt_cmd))
1338 IWL_ERR(priv, "failed to send BT Coex Config\n");
17f841cd
SO		 1339}
1340EXPORT_SYMBOL(iwl_send_bt_config);
1341
ef8d5529 1342int iwl_send_statistics_request(struct iwl_priv *priv, u8 flags, bool clear)
49ea8596 1343{
ef8d5529
WYG		 1344 struct iwl_statistics_cmd statistics_cmd = {
1345 .configuration_flags =
1346 clear ? IWL_STATS_CONF_CLEAR_STATS : 0,
49ea8596 1347 };
ef8d5529
WYG		 1348
1349 if (flags & CMD_ASYNC)
1350 return iwl_send_cmd_pdu_async(priv, REPLY_STATISTICS_CMD,
1351 sizeof(struct iwl_statistics_cmd),
1352 &statistics_cmd, NULL);
1353 else
1354 return iwl_send_cmd_pdu(priv, REPLY_STATISTICS_CMD,
1355 sizeof(struct iwl_statistics_cmd),
1356 &statistics_cmd);
49ea8596
EG		 1357}
1358EXPORT_SYMBOL(iwl_send_statistics_request);
7e8c519e 1359
030f05ed
AK		 1360void iwl_rx_pm_sleep_notif(struct iwl_priv *priv,
1361 struct iwl_rx_mem_buffer *rxb)
1362{
1363#ifdef CONFIG_IWLWIFI_DEBUG
2f301227 1364 struct iwl_rx_packet *pkt = rxb_addr(rxb);
030f05ed
AK		 1365 struct iwl_sleep_notification *sleep = &(pkt->u.sleep_notif);
1366 IWL_DEBUG_RX(priv, "sleep mode: %d, src: %d\n",
1367 sleep->pm_sleep_mode, sleep->pm_wakeup_src);
1368#endif
1369}
1370EXPORT_SYMBOL(iwl_rx_pm_sleep_notif);
1371
1372void iwl_rx_pm_debug_statistics_notif(struct iwl_priv *priv,
1373 struct iwl_rx_mem_buffer *rxb)
1374{
2f301227 1375 struct iwl_rx_packet *pkt = rxb_addr(rxb);
396887a2 1376 u32 len = le32_to_cpu(pkt->len_n_flags) & FH_RSCSR_FRAME_SIZE_MSK;
030f05ed 1377 IWL_DEBUG_RADIO(priv, "Dumping %d bytes of unhandled "
396887a2
DH		 1378 "notification for %s:\n", len,
1379 get_cmd_string(pkt->hdr.cmd));
1380 iwl_print_hex_dump(priv, IWL_DL_RADIO, pkt->u.raw, len);
030f05ed
AK		 1381}
1382EXPORT_SYMBOL(iwl_rx_pm_debug_statistics_notif);
261b9c33
AK		 1383
1384void iwl_rx_reply_error(struct iwl_priv *priv,
1385 struct iwl_rx_mem_buffer *rxb)
1386{
2f301227 1387 struct iwl_rx_packet *pkt = rxb_addr(rxb);
261b9c33
AK		 1388
1389 IWL_ERR(priv, "Error Reply type 0x%08X cmd %s (0x%02X) "
1390 "seq 0x%04X ser 0x%08X\n",
1391 le32_to_cpu(pkt->u.err_resp.error_type),
1392 get_cmd_string(pkt->u.err_resp.cmd_id),
1393 pkt->u.err_resp.cmd_id,
1394 le16_to_cpu(pkt->u.err_resp.bad_cmd_seq_num),
1395 le32_to_cpu(pkt->u.err_resp.error_info));
1396}
1397EXPORT_SYMBOL(iwl_rx_reply_error);
1398
a83b9141
WYG		 1399void iwl_clear_isr_stats(struct iwl_priv *priv)
1400{
1401 memset(&priv->isr_stats, 0, sizeof(priv->isr_stats));
1402}
a83b9141 1403
488829f1
AK		 1404int iwl_mac_conf_tx(struct ieee80211_hw *hw, u16 queue,
1405 const struct ieee80211_tx_queue_params *params)
1406{
1407 struct iwl_priv *priv = hw->priv;
8dfdb9d5 1408 struct iwl_rxon_context *ctx;
488829f1
AK		 1409 unsigned long flags;
1410 int q;
1411
1412 IWL_DEBUG_MAC80211(priv, "enter\n");
1413
1414 if (!iwl_is_ready_rf(priv)) {
1415 IWL_DEBUG_MAC80211(priv, "leave - RF not ready\n");
1416 return -EIO;
1417 }
1418
1419 if (queue >= AC_NUM) {
1420 IWL_DEBUG_MAC80211(priv, "leave - queue >= AC_NUM %d\n", queue);
1421 return 0;
1422 }
1423
1424 q = AC_NUM - 1 - queue;
1425
1426 spin_lock_irqsave(&priv->lock, flags);
1427
8dfdb9d5
JB		 1428 /*
1429 * MULTI-FIXME
1430 * This may need to be done per interface in nl80211/cfg80211/mac80211.
1431 */
1432 for_each_context(priv, ctx) {
1433 ctx->qos_data.def_qos_parm.ac[q].cw_min =
1434 cpu_to_le16(params->cw_min);
1435 ctx->qos_data.def_qos_parm.ac[q].cw_max =
1436 cpu_to_le16(params->cw_max);
1437 ctx->qos_data.def_qos_parm.ac[q].aifsn = params->aifs;
1438 ctx->qos_data.def_qos_parm.ac[q].edca_txop =
1439 cpu_to_le16((params->txop * 32));
1440
1441 ctx->qos_data.def_qos_parm.ac[q].reserved1 = 0;
1442 }
488829f1
AK		 1443
1444 spin_unlock_irqrestore(&priv->lock, flags);
1445
1446 IWL_DEBUG_MAC80211(priv, "leave\n");
1447 return 0;
1448}
1449EXPORT_SYMBOL(iwl_mac_conf_tx);
5bbe233b 1450
a85d7cca
JB		 1451int iwl_mac_tx_last_beacon(struct ieee80211_hw *hw)
1452{
1453 struct iwl_priv *priv = hw->priv;
1454
1455 return priv->ibss_manager == IWL_IBSS_MANAGER;
1456}
1457EXPORT_SYMBOL_GPL(iwl_mac_tx_last_beacon);
1458
5bbe233b 1459static void iwl_ht_conf(struct iwl_priv *priv,
ca3c1f59 1460 struct ieee80211_vif *vif)
5bbe233b 1461{
fad95bf5 1462 struct iwl_ht_config *ht_conf = &priv->current_ht_config;
5bbe233b 1463 struct ieee80211_sta *sta;
ca3c1f59 1464 struct ieee80211_bss_conf *bss_conf = &vif->bss_conf;
7e6a5886 1465 struct iwl_rxon_context *ctx = iwl_rxon_ctx_from_vif(vif);
5bbe233b 1466
91dd6c27 1467 IWL_DEBUG_MAC80211(priv, "enter:\n");
5bbe233b 1468
7e6a5886 1469 if (!ctx->ht.enabled)
5bbe233b
AK		 1470 return;
1471
7e6a5886 1472 ctx->ht.protection =
9ed6bcce 1473 bss_conf->ht_operation_mode & IEEE80211_HT_OP_MODE_PROTECTION;
7e6a5886 1474 ctx->ht.non_gf_sta_present =
9ed6bcce 1475 !!(bss_conf->ht_operation_mode & IEEE80211_HT_OP_MODE_NON_GF_STA_PRSNT);
5bbe233b 1476
02bb1bea
JB		 1477 ht_conf->single_chain_sufficient = false;
1478
ca3c1f59 1479 switch (vif->type) {
02bb1bea
JB		 1480 case NL80211_IFTYPE_STATION:
1481 rcu_read_lock();
ca3c1f59 1482 sta = ieee80211_find_sta(vif, bss_conf->bssid);
02bb1bea
JB		 1483 if (sta) {
1484 struct ieee80211_sta_ht_cap *ht_cap = &sta->ht_cap;
1485 int maxstreams;
1486
1487 maxstreams = (ht_cap->mcs.tx_params &
1488 IEEE80211_HT_MCS_TX_MAX_STREAMS_MASK)
1489 >> IEEE80211_HT_MCS_TX_MAX_STREAMS_SHIFT;
1490 maxstreams += 1;
1491
1492 if ((ht_cap->mcs.rx_mask[1] == 0) &&
1493 (ht_cap->mcs.rx_mask[2] == 0))
1494 ht_conf->single_chain_sufficient = true;
1495 if (maxstreams <= 1)
1496 ht_conf->single_chain_sufficient = true;
1497 } else {
1498 /*
1499 * If at all, this can only happen through a race
1500 * when the AP disconnects us while we're still
1501 * setting up the connection, in that case mac80211
1502 * will soon tell us about that.
1503 */
1504 ht_conf->single_chain_sufficient = true;
1505 }
1506 rcu_read_unlock();
1507 break;
1508 case NL80211_IFTYPE_ADHOC:
1509 ht_conf->single_chain_sufficient = true;
1510 break;
1511 default:
1512 break;
1513 }
5bbe233b
AK		 1514
1515 IWL_DEBUG_MAC80211(priv, "leave\n");
1516}
1517
246ed355
JB		 1518static inline void iwl_set_no_assoc(struct iwl_priv *priv,
1519 struct ieee80211_vif *vif)
c91c3efc 1520{
246ed355
JB		 1521 struct iwl_rxon_context *ctx = iwl_rxon_ctx_from_vif(vif);
1522
c91c3efc
AK		 1523 iwl_led_disassociate(priv);
1524 /*
1525 * inform the ucode that there is no longer an
1526 * association and that no more packets should be
1527 * sent
1528 */
246ed355
JB		 1529 ctx->staging.filter_flags &= ~RXON_FILTER_ASSOC_MSK;
1530 ctx->staging.assoc_id = 0;
1531 iwlcore_commit_rxon(priv, ctx);
c91c3efc
AK		 1532}
1533
575ccfd0
JB		 1534static void iwlcore_beacon_update(struct ieee80211_hw *hw,
1535 struct ieee80211_vif *vif)
0bc5774f
JB		 1536{
1537 struct iwl_priv *priv = hw->priv;
1538 unsigned long flags;
1539 __le64 timestamp;
575ccfd0 1540 struct sk_buff *skb = ieee80211_beacon_get(hw, vif);
0bc5774f 1541
575ccfd0
JB		 1542 if (!skb)
1543 return;
1544
1545 IWL_DEBUG_ASSOC(priv, "enter\n");
0bc5774f 1546
76d04815
JB		 1547 lockdep_assert_held(&priv->mutex);
1548
1549 if (!priv->beacon_ctx) {
1550 IWL_ERR(priv, "update beacon but no beacon context!\n");
1551 dev_kfree_skb(skb);
575ccfd0 1552 return;
0bc5774f
JB		 1553 }
1554
1555 spin_lock_irqsave(&priv->lock, flags);
1556
12e934dc
JB		 1557 if (priv->beacon_skb)
1558 dev_kfree_skb(priv->beacon_skb);
0bc5774f 1559
12e934dc 1560 priv->beacon_skb = skb;
0bc5774f
JB		 1561
1562 timestamp = ((struct ieee80211_mgmt *)skb->data)->u.beacon.timestamp;
1563 priv->timestamp = le64_to_cpu(timestamp);
1564
575ccfd0
JB		 1565 IWL_DEBUG_ASSOC(priv, "leave\n");
1566
0bc5774f
JB		 1567 spin_unlock_irqrestore(&priv->lock, flags);
1568
575ccfd0
JB		 1569 if (!iwl_is_ready_rf(priv)) {
1570 IWL_DEBUG_MAC80211(priv, "leave - RF not ready\n");
1571 return;
1572 }
0bc5774f 1573
575ccfd0 1574 priv->cfg->ops->lib->post_associate(priv, priv->beacon_ctx->vif);
0bc5774f
JB		 1575}
1576
5bbe233b 1577void iwl_bss_info_changed(struct ieee80211_hw *hw,
2d0ddec5
JB		 1578 struct ieee80211_vif *vif,
1579 struct ieee80211_bss_conf *bss_conf,
1580 u32 changes)
5bbe233b
AK		 1581{
1582 struct iwl_priv *priv = hw->priv;
246ed355 1583 struct iwl_rxon_context *ctx = iwl_rxon_ctx_from_vif(vif);
3a650292 1584 int ret;
5bbe233b
AK		 1585
1586 IWL_DEBUG_MAC80211(priv, "changes = 0x%X\n", changes);
1587
2d0ddec5
JB		 1588 if (!iwl_is_alive(priv))
1589 return;
1590
1591 mutex_lock(&priv->mutex);
1592
3eb9616a
SG		 1593 if (changes & (BSS_CHANGED_BSSID | BSS_CHANGED_ASSOC |
1594 BSS_CHANGED_BEACON_ENABLED)) {
1595 /*
1596 * If there is currently a HW scan going on in the
1597 * background then we need to cancel it else the RXON
1598 * below in post_associate or set_no_assoc can fail.
1599 */
1600 if (iwl_scan_cancel_timeout(priv, 200)) {
1601 IWL_WARN(priv, "Can not cancel scan\n");
1602 goto out;
1603 }
1604 }
1605
4ced3f74
JB		 1606 if (changes & BSS_CHANGED_QOS) {
1607 unsigned long flags;
1608
1609 spin_lock_irqsave(&priv->lock, flags);
8dfdb9d5
JB		 1610 ctx->qos_data.qos_active = bss_conf->qos;
1611 iwl_update_qos(priv, ctx);
4ced3f74
JB		 1612 spin_unlock_irqrestore(&priv->lock, flags);
1613 }
1614
76d04815
JB		 1615 if (changes & BSS_CHANGED_BEACON_ENABLED) {
1616 /*
1617 * the add_interface code must make sure we only ever
1618 * have a single interface that could be beaconing at
1619 * any time.
1620 */
1621 if (vif->bss_conf.enable_beacon)
1622 priv->beacon_ctx = ctx;
1623 else
1624 priv->beacon_ctx = NULL;
1625 }
1626
92445c95 1627 if (changes & BSS_CHANGED_BEACON && vif->type == NL80211_IFTYPE_AP) {
12e934dc
JB		 1628 dev_kfree_skb(priv->beacon_skb);
1629 priv->beacon_skb = ieee80211_beacon_get(hw, vif);
2d0ddec5
JB		 1630 }
1631
2a3aeb44
JB		 1632 if (changes & BSS_CHANGED_BEACON_INT && vif->type == NL80211_IFTYPE_AP)
1633 iwl_send_rxon_timing(priv, ctx);
d7129e19
JB		 1634
1635 if (changes & BSS_CHANGED_BSSID) {
1636 IWL_DEBUG_MAC80211(priv, "BSSID %pM\n", bss_conf->bssid);
1637
d7129e19 1638 /* mac80211 only sets assoc when in STATION mode */
92445c95 1639 if (vif->type == NL80211_IFTYPE_ADHOC || bss_conf->assoc) {
246ed355 1640 memcpy(ctx->staging.bssid_addr,
d7129e19 1641 bss_conf->bssid, ETH_ALEN);
2d0ddec5 1642
d7129e19
JB		 1643 /* currently needed in a few places */
1644 memcpy(priv->bssid, bss_conf->bssid, ETH_ALEN);
1645 } else {
246ed355 1646 ctx->staging.filter_flags &=
d7129e19 1647 ~RXON_FILTER_ASSOC_MSK;
2d0ddec5 1648 }
d7129e19 1649
2d0ddec5
JB		 1650 }
1651
d7129e19
JB		 1652 /*
1653 * This needs to be after setting the BSSID in case
1654 * mac80211 decides to do both changes at once because
1655 * it will invoke post_associate.
1656 */
575ccfd0
JB		 1657 if (vif->type == NL80211_IFTYPE_ADHOC && changes & BSS_CHANGED_BEACON)
1658 iwlcore_beacon_update(hw, vif);
2d0ddec5 1659
5bbe233b
AK		 1660 if (changes & BSS_CHANGED_ERP_PREAMBLE) {
1661 IWL_DEBUG_MAC80211(priv, "ERP_PREAMBLE %d\n",
1662 bss_conf->use_short_preamble);
1663 if (bss_conf->use_short_preamble)
246ed355 1664 ctx->staging.flags |= RXON_FLG_SHORT_PREAMBLE_MSK;
5bbe233b 1665 else
246ed355 1666 ctx->staging.flags &= ~RXON_FLG_SHORT_PREAMBLE_MSK;
5bbe233b
AK		 1667 }
1668
1669 if (changes & BSS_CHANGED_ERP_CTS_PROT) {
1670 IWL_DEBUG_MAC80211(priv, "ERP_CTS %d\n", bss_conf->use_cts_prot);
1671 if (bss_conf->use_cts_prot && (priv->band != IEEE80211_BAND_5GHZ))
246ed355 1672 ctx->staging.flags |= RXON_FLG_TGG_PROTECT_MSK;
5bbe233b 1673 else
246ed355 1674 ctx->staging.flags &= ~RXON_FLG_TGG_PROTECT_MSK;
94597ab2 1675 if (bss_conf->use_cts_prot)
246ed355 1676 ctx->staging.flags |= RXON_FLG_SELF_CTS_EN;
94597ab2 1677 else
246ed355 1678 ctx->staging.flags &= ~RXON_FLG_SELF_CTS_EN;
5bbe233b
AK		 1679 }
1680
d7129e19
JB		 1681 if (changes & BSS_CHANGED_BASIC_RATES) {
1682 /* XXX use this information
1683 *
1684 * To do that, remove code from iwl_set_rate() and put something
1685 * like this here:
1686 *
1687 if (A-band)
246ed355 1688 ctx->staging.ofdm_basic_rates =
d7129e19
JB		 1689 bss_conf->basic_rates;
1690 else
246ed355 1691 ctx->staging.ofdm_basic_rates =
d7129e19 1692 bss_conf->basic_rates >> 4;
246ed355 1693 ctx->staging.cck_basic_rates =
d7129e19
JB		 1694 bss_conf->basic_rates & 0xF;
1695 */
1696 }
1697
5bbe233b 1698 if (changes & BSS_CHANGED_HT) {
ca3c1f59 1699 iwl_ht_conf(priv, vif);
45823531
AK		 1700
1701 if (priv->cfg->ops->hcmd->set_rxon_chain)
246ed355 1702 priv->cfg->ops->hcmd->set_rxon_chain(priv, ctx);
5bbe233b
AK		 1703 }
1704
1705 if (changes & BSS_CHANGED_ASSOC) {
1706 IWL_DEBUG_MAC80211(priv, "ASSOC %d\n", bss_conf->assoc);
5bbe233b 1707 if (bss_conf->assoc) {
5bbe233b 1708 priv->timestamp = bss_conf->timestamp;
5bbe233b 1709
e932a609
JB		 1710 iwl_led_associate(priv);
1711
d7129e19 1712 if (!iwl_is_rfkill(priv))
1dda6d28 1713 priv->cfg->ops->lib->post_associate(priv, vif);
c91c3efc 1714 } else
246ed355 1715 iwl_set_no_assoc(priv, vif);
d7129e19
JB		 1716 }
1717
246ed355 1718 if (changes && iwl_is_associated_ctx(ctx) && bss_conf->aid) {
d7129e19
JB		 1719 IWL_DEBUG_MAC80211(priv, "Changes (%#x) while associated\n",
1720 changes);
246ed355 1721 ret = iwl_send_rxon_assoc(priv, ctx);
d7129e19
JB		 1722 if (!ret) {
1723 /* Sync active_rxon with latest change. */
246ed355
JB		 1724 memcpy((void *)&ctx->active,
1725 &ctx->staging,
d7129e19 1726 sizeof(struct iwl_rxon_cmd));
5bbe233b 1727 }
5bbe233b 1728 }
d7129e19 1729
c91c3efc
AK		 1730 if (changes & BSS_CHANGED_BEACON_ENABLED) {
1731 if (vif->bss_conf.enable_beacon) {
246ed355 1732 memcpy(ctx->staging.bssid_addr,
c91c3efc
AK		 1733 bss_conf->bssid, ETH_ALEN);
1734 memcpy(priv->bssid, bss_conf->bssid, ETH_ALEN);
657e11a4 1735 iwl_led_associate(priv);
1dda6d28 1736 iwlcore_config_ap(priv, vif);
c91c3efc 1737 } else
246ed355 1738 iwl_set_no_assoc(priv, vif);
f513dfff
DH		 1739 }
1740
1fa61b2e
JB		 1741 if (changes & BSS_CHANGED_IBSS) {
1742 ret = priv->cfg->ops->lib->manage_ibss_station(priv, vif,
1743 bss_conf->ibss_joined);
1744 if (ret)
1745 IWL_ERR(priv, "failed to %s IBSS station %pM\n",
1746 bss_conf->ibss_joined ? "add" : "remove",
1747 bss_conf->bssid);
1748 }
1749
52a02d15
JB		 1750 if (changes & BSS_CHANGED_IDLE &&
1751 priv->cfg->ops->hcmd->set_pan_params) {
1752 if (priv->cfg->ops->hcmd->set_pan_params(priv))
1753 IWL_ERR(priv, "failed to update PAN params\n");
1754 }
1755
3eb9616a 1756out:
d7129e19
JB		 1757 mutex_unlock(&priv->mutex);
1758
2d0ddec5 1759 IWL_DEBUG_MAC80211(priv, "leave\n");
5bbe233b
AK		 1760}
1761EXPORT_SYMBOL(iwl_bss_info_changed);
1762
b55e75ed 1763static int iwl_set_mode(struct iwl_priv *priv, struct ieee80211_vif *vif)
727882d6 1764{
246ed355
JB		 1765 struct iwl_rxon_context *ctx = iwl_rxon_ctx_from_vif(vif);
1766
d0fe478c 1767 iwl_connection_init_rx_config(priv, ctx);
727882d6
AK		 1768
1769 if (priv->cfg->ops->hcmd->set_rxon_chain)
246ed355 1770 priv->cfg->ops->hcmd->set_rxon_chain(priv, ctx);
727882d6 1771
246ed355 1772 return iwlcore_commit_rxon(priv, ctx);
727882d6 1773}
727882d6 1774
b55e75ed 1775int iwl_mac_add_interface(struct ieee80211_hw *hw, struct ieee80211_vif *vif)
cbb6ab94
AK		 1776{
1777 struct iwl_priv *priv = hw->priv;
246ed355 1778 struct iwl_vif_priv *vif_priv = (void *)vif->drv_priv;
d0fe478c 1779 struct iwl_rxon_context *tmp, *ctx = NULL;
47e28f41 1780 int err = 0;
cbb6ab94 1781
3779db10
JB		 1782 IWL_DEBUG_MAC80211(priv, "enter: type %d, addr %pM\n",
1783 vif->type, vif->addr);
cbb6ab94 1784
47e28f41
JB		 1785 mutex_lock(&priv->mutex);
1786
4bd530f3
SG		 1787 if (!iwl_is_ready_rf(priv)) {
1788 IWL_WARN(priv, "Try to add interface when device not ready\n");
b55e75ed
JB		 1789 err = -EINVAL;
1790 goto out;
1791 }
1792
d0fe478c
JB		 1793 for_each_context(priv, tmp) {
1794 u32 possible_modes =
1795 tmp->interface_modes | tmp->exclusive_interface_modes;
1796
1797 if (tmp->vif) {
1798 /* check if this busy context is exclusive */
1799 if (tmp->exclusive_interface_modes &
1800 BIT(tmp->vif->type)) {
1801 err = -EINVAL;
1802 goto out;
1803 }
1804 continue;
1805 }
1806
1807 if (!(possible_modes & BIT(vif->type)))
1808 continue;
1809
1810 /* have maybe usable context w/o interface */
1811 ctx = tmp;
1812 break;
1813 }
1814
1815 if (!ctx) {
47e28f41
JB		 1816 err = -EOPNOTSUPP;
1817 goto out;
cbb6ab94
AK		 1818 }
1819
d0fe478c 1820 vif_priv->ctx = ctx;
8bd413e6 1821 ctx->vif = vif;
d0fe478c
JB		 1822 /*
1823 * This variable will be correct only when there's just
1824 * a single context, but all code using it is for hardware
1825 * that supports only one context.
1826 */
1ed32e4f 1827 priv->iw_mode = vif->type;
cbb6ab94 1828
763cc3bf
JB		 1829 ctx->is_active = true;
1830
b55e75ed 1831 err = iwl_set_mode(priv, vif);
763cc3bf
JB		 1832 if (err) {
1833 if (!ctx->always_active)
1834 ctx->is_active = false;
b55e75ed 1835 goto out_err;
763cc3bf 1836 }
7e246191 1837
7cb1b088
WYG		 1838 if (priv->cfg->bt_params &&
1839 priv->cfg->bt_params->advanced_bt_coexist &&
59079949
JB		 1840 vif->type == NL80211_IFTYPE_ADHOC) {
1841 /*
1842 * pretend to have high BT traffic as long as we
1843 * are operating in IBSS mode, as this will cause
1844 * the rate scaling etc. to behave as intended.
1845 */
1846 priv->bt_traffic_load = IWL_BT_COEX_TRAFFIC_LOAD_HIGH;
1847 }
1848
b55e75ed 1849 goto out;
cbb6ab94 1850
b55e75ed 1851 out_err:
8bd413e6 1852 ctx->vif = NULL;
b55e75ed 1853 priv->iw_mode = NL80211_IFTYPE_STATION;
47e28f41 1854 out:
cbb6ab94
AK		 1855 mutex_unlock(&priv->mutex);
1856
1857 IWL_DEBUG_MAC80211(priv, "leave\n");
47e28f41 1858 return err;
cbb6ab94
AK		 1859}
1860EXPORT_SYMBOL(iwl_mac_add_interface);
1861
d8052319 1862void iwl_mac_remove_interface(struct ieee80211_hw *hw,
b55e75ed 1863 struct ieee80211_vif *vif)
d8052319
AK		 1864{
1865 struct iwl_priv *priv = hw->priv;
246ed355 1866 struct iwl_rxon_context *ctx = iwl_rxon_ctx_from_vif(vif);
d8052319
AK		 1867
1868 IWL_DEBUG_MAC80211(priv, "enter\n");
1869
1870 mutex_lock(&priv->mutex);
1871
d0fe478c
JB		 1872 WARN_ON(ctx->vif != vif);
1873 ctx->vif = NULL;
1874
e7e16b90
SG		 1875 if (priv->scan_vif == vif) {
1876 iwl_scan_cancel_timeout(priv, 200);
1877 iwl_force_scan_end(priv);
1878 }
d0fe478c 1879 iwl_set_mode(priv, vif);
8bd413e6 1880
763cc3bf
JB		 1881 if (!ctx->always_active)
1882 ctx->is_active = false;
1883
59079949
JB		 1884 /*
1885 * When removing the IBSS interface, overwrite the
1886 * BT traffic load with the stored one from the last
1887 * notification, if any. If this is a device that
1888 * doesn't implement this, this has no effect since
1889 * both values are the same and zero.
1890 */
1891 if (vif->type == NL80211_IFTYPE_ADHOC)
1892 priv->bt_traffic_load = priv->notif_bt_traffic_load;
1893
8bd413e6 1894 memset(priv->bssid, 0, ETH_ALEN);
d8052319
AK		 1895 mutex_unlock(&priv->mutex);
1896
1897 IWL_DEBUG_MAC80211(priv, "leave\n");
1898
1899}
1900EXPORT_SYMBOL(iwl_mac_remove_interface);
1901
4808368d
AK		 1902/**
1903 * iwl_mac_config - mac80211 config callback
4808368d
AK		 1904 */
1905int iwl_mac_config(struct ieee80211_hw *hw, u32 changed)
1906{
1907 struct iwl_priv *priv = hw->priv;
1908 const struct iwl_channel_info *ch_info;
1909 struct ieee80211_conf *conf = &hw->conf;
aa2dc6b5 1910 struct ieee80211_channel *channel = conf->channel;
fad95bf5 1911 struct iwl_ht_config *ht_conf = &priv->current_ht_config;
246ed355 1912 struct iwl_rxon_context *ctx;
4808368d
AK		 1913 unsigned long flags = 0;
1914 int ret = 0;
1915 u16 ch;
1916 int scan_active = 0;
1917
1918 mutex_lock(&priv->mutex);
1919
4808368d 1920 IWL_DEBUG_MAC80211(priv, "enter to channel %d changed 0x%X\n",
aa2dc6b5 1921 channel->hw_value, changed);
4808368d
AK		 1922
1923 if (unlikely(!priv->cfg->mod_params->disable_hw_scan &&
1924 test_bit(STATUS_SCANNING, &priv->status))) {
1925 scan_active = 1;
1926 IWL_DEBUG_MAC80211(priv, "leave - scanning\n");
1927 }
1928
ba37a3d0
JB		 1929 if (changed & (IEEE80211_CONF_CHANGE_SMPS |
1930 IEEE80211_CONF_CHANGE_CHANNEL)) {
1931 /* mac80211 uses static for non-HT which is what we want */
1932 priv->current_ht_config.smps = conf->smps_mode;
1933
1934 /*
1935 * Recalculate chain counts.
1936 *
1937 * If monitor mode is enabled then mac80211 will
1938 * set up the SM PS mode to OFF if an HT channel is
1939 * configured.
1940 */
1941 if (priv->cfg->ops->hcmd->set_rxon_chain)
246ed355
JB		 1942 for_each_context(priv, ctx)
1943 priv->cfg->ops->hcmd->set_rxon_chain(priv, ctx);
ba37a3d0 1944 }
4808368d
AK		 1945
1946 /* during scanning mac80211 will delay channel setting until
1947 * scan finish with changed = 0
1948 */
1949 if (!changed || (changed & IEEE80211_CONF_CHANGE_CHANNEL)) {
1950 if (scan_active)
1951 goto set_ch_out;
1952
aa2dc6b5
SZ		 1953 ch = channel->hw_value;
1954 ch_info = iwl_get_channel_info(priv, channel->band, ch);
4808368d
AK		 1955 if (!is_channel_valid(ch_info)) {
1956 IWL_DEBUG_MAC80211(priv, "leave - invalid channel\n");
1957 ret = -EINVAL;
1958 goto set_ch_out;
1959 }
1960
4808368d
AK		 1961 spin_lock_irqsave(&priv->lock, flags);
1962
246ed355 1963 for_each_context(priv, ctx) {
7e6a5886
JB		 1964 /* Configure HT40 channels */
1965 ctx->ht.enabled = conf_is_ht(conf);
1966 if (ctx->ht.enabled) {
1967 if (conf_is_ht40_minus(conf)) {
1968 ctx->ht.extension_chan_offset =
1969 IEEE80211_HT_PARAM_CHA_SEC_BELOW;
1970 ctx->ht.is_40mhz = true;
1971 } else if (conf_is_ht40_plus(conf)) {
1972 ctx->ht.extension_chan_offset =
1973 IEEE80211_HT_PARAM_CHA_SEC_ABOVE;
1974 ctx->ht.is_40mhz = true;
1975 } else {
1976 ctx->ht.extension_chan_offset =
1977 IEEE80211_HT_PARAM_CHA_SEC_NONE;
1978 ctx->ht.is_40mhz = false;
1979 }
1980 } else
1981 ctx->ht.is_40mhz = false;
1982
1983 /*
1984 * Default to no protection. Protection mode will
1985 * later be set from BSS config in iwl_ht_conf
1986 */
1987 ctx->ht.protection = IEEE80211_HT_OP_MODE_PROTECTION_NONE;
1988
246ed355
JB		 1989 /* if we are switching from ht to 2.4 clear flags
1990 * from any ht related info since 2.4 does not
1991 * support ht */
1992 if ((le16_to_cpu(ctx->staging.channel) != ch))
1993 ctx->staging.flags = 0;
4808368d 1994
246ed355
JB		 1995 iwl_set_rxon_channel(priv, channel, ctx);
1996 iwl_set_rxon_ht(priv, ht_conf);
1997
1998 iwl_set_flags_for_band(priv, ctx, channel->band,
8bd413e6 1999 ctx->vif);
246ed355 2000 }
4808368d 2001
4808368d 2002 spin_unlock_irqrestore(&priv->lock, flags);
79d07325 2003
a194e324
JB		 2004 if (priv->cfg->ops->lib->update_bcast_stations)
2005 ret = priv->cfg->ops->lib->update_bcast_stations(priv);
278c2f6f 2006
4808368d
AK		 2007 set_ch_out:
2008 /* The list of supported rates and rate mask can be different
2009 * for each band; since the band may have changed, reset
2010 * the rate mask to what mac80211 lists */
2011 iwl_set_rate(priv);
2012 }
2013
78f5fb7f
JB		 2014 if (changed & (IEEE80211_CONF_CHANGE_PS |
2015 IEEE80211_CONF_CHANGE_IDLE)) {
e312c24c 2016 ret = iwl_power_update_mode(priv, false);
4808368d 2017 if (ret)
e312c24c 2018 IWL_DEBUG_MAC80211(priv, "Error setting sleep level\n");
4808368d
AK		 2019 }
2020
2021 if (changed & IEEE80211_CONF_CHANGE_POWER) {
2022 IWL_DEBUG_MAC80211(priv, "TX Power old=%d new=%d\n",
2023 priv->tx_power_user_lmt, conf->power_level);
2024
a25a66ac
SG		 2025 ret = iwl_set_tx_power(priv, conf->power_level, false);
2026 if (ret)
2027 IWL_ERR(priv, "Error sending TX power (%d)\n", ret);
4808368d
AK		 2028 }
2029
0cf4c01e
MA		 2030 if (!iwl_is_ready(priv)) {
2031 IWL_DEBUG_MAC80211(priv, "leave - not ready\n");
2032 goto out;
2033 }
2034
4808368d
AK		 2035 if (scan_active)
2036 goto out;
2037
246ed355
JB		 2038 for_each_context(priv, ctx) {
2039 if (memcmp(&ctx->active, &ctx->staging, sizeof(ctx->staging)))
2040 iwlcore_commit_rxon(priv, ctx);
2041 else
2042 IWL_DEBUG_INFO(priv,
2043 "Not re-sending same RXON configuration.\n");
2044 }
4808368d
AK		 2045
2046out:
2047 IWL_DEBUG_MAC80211(priv, "leave\n");
2048 mutex_unlock(&priv->mutex);
2049 return ret;
2050}
2051EXPORT_SYMBOL(iwl_mac_config);
2052
bd564261
AK		 2053void iwl_mac_reset_tsf(struct ieee80211_hw *hw)
2054{
2055 struct iwl_priv *priv = hw->priv;
2056 unsigned long flags;
246ed355
JB		 2057 /* IBSS can only be the IWL_RXON_CTX_BSS context */
2058 struct iwl_rxon_context *ctx = &priv->contexts[IWL_RXON_CTX_BSS];
bd564261
AK		 2059
2060 mutex_lock(&priv->mutex);
2061 IWL_DEBUG_MAC80211(priv, "enter\n");
2062
2063 spin_lock_irqsave(&priv->lock, flags);
fad95bf5 2064 memset(&priv->current_ht_config, 0, sizeof(struct iwl_ht_config));
bd564261
AK		 2065 spin_unlock_irqrestore(&priv->lock, flags);
2066
bd564261 2067 spin_lock_irqsave(&priv->lock, flags);
bd564261
AK		 2068
2069 /* new association get rid of ibss beacon skb */
12e934dc
JB		 2070 if (priv->beacon_skb)
2071 dev_kfree_skb(priv->beacon_skb);
bd564261 2072
12e934dc 2073 priv->beacon_skb = NULL;
bd564261 2074
bd564261 2075 priv->timestamp = 0;
bd564261
AK		 2076
2077 spin_unlock_irqrestore(&priv->lock, flags);
2078
f5354c17 2079 iwl_scan_cancel_timeout(priv, 100);
bd564261
AK		 2080 if (!iwl_is_ready_rf(priv)) {
2081 IWL_DEBUG_MAC80211(priv, "leave - not ready\n");
2082 mutex_unlock(&priv->mutex);
2083 return;
2084 }
2085
2086 /* we are restarting association process
2087 * clear RXON_FILTER_ASSOC_MSK bit
2088 */
246ed355
JB		 2089 ctx->staging.filter_flags &= ~RXON_FILTER_ASSOC_MSK;
2090 iwlcore_commit_rxon(priv, ctx);
bd564261
AK		 2091
2092 iwl_set_rate(priv);
2093
2094 mutex_unlock(&priv->mutex);
2095
2096 IWL_DEBUG_MAC80211(priv, "leave\n");
2097}
2098EXPORT_SYMBOL(iwl_mac_reset_tsf);
2099
88804e2b
WYG		 2100int iwl_alloc_txq_mem(struct iwl_priv *priv)
2101{
2102 if (!priv->txq)
2103 priv->txq = kzalloc(
7cb1b088
WYG		 2104 sizeof(struct iwl_tx_queue) *
2105 priv->cfg->base_params->num_of_queues,
88804e2b
WYG		 2106 GFP_KERNEL);
2107 if (!priv->txq) {
91dd6c27 2108 IWL_ERR(priv, "Not enough memory for txq\n");
88804e2b
WYG		 2109 return -ENOMEM;
2110 }
2111 return 0;
2112}
2113EXPORT_SYMBOL(iwl_alloc_txq_mem);
2114
2115void iwl_free_txq_mem(struct iwl_priv *priv)
2116{
2117 kfree(priv->txq);
2118 priv->txq = NULL;
2119}
2120EXPORT_SYMBOL(iwl_free_txq_mem);
2121
20594eb0
WYG		 2122#ifdef CONFIG_IWLWIFI_DEBUGFS
2123
2124#define IWL_TRAFFIC_DUMP_SIZE (IWL_TRAFFIC_ENTRY_SIZE * IWL_TRAFFIC_ENTRIES)
2125
2126void iwl_reset_traffic_log(struct iwl_priv *priv)
2127{
2128 priv->tx_traffic_idx = 0;
2129 priv->rx_traffic_idx = 0;
2130 if (priv->tx_traffic)
2131 memset(priv->tx_traffic, 0, IWL_TRAFFIC_DUMP_SIZE);
2132 if (priv->rx_traffic)
2133 memset(priv->rx_traffic, 0, IWL_TRAFFIC_DUMP_SIZE);
2134}
2135
2136int iwl_alloc_traffic_mem(struct iwl_priv *priv)
2137{
2138 u32 traffic_size = IWL_TRAFFIC_DUMP_SIZE;
2139
2140 if (iwl_debug_level & IWL_DL_TX) {
2141 if (!priv->tx_traffic) {
2142 priv->tx_traffic =
2143 kzalloc(traffic_size, GFP_KERNEL);
2144 if (!priv->tx_traffic)
2145 return -ENOMEM;
2146 }
2147 }
2148 if (iwl_debug_level & IWL_DL_RX) {
2149 if (!priv->rx_traffic) {
2150 priv->rx_traffic =
2151 kzalloc(traffic_size, GFP_KERNEL);
2152 if (!priv->rx_traffic)
2153 return -ENOMEM;
2154 }
2155 }
2156 iwl_reset_traffic_log(priv);
2157 return 0;
2158}
2159EXPORT_SYMBOL(iwl_alloc_traffic_mem);
2160
2161void iwl_free_traffic_mem(struct iwl_priv *priv)
2162{
2163 kfree(priv->tx_traffic);
2164 priv->tx_traffic = NULL;
2165
2166 kfree(priv->rx_traffic);
2167 priv->rx_traffic = NULL;
2168}
2169EXPORT_SYMBOL(iwl_free_traffic_mem);
2170
2171void iwl_dbg_log_tx_data_frame(struct iwl_priv *priv,
2172 u16 length, struct ieee80211_hdr *header)
2173{
2174 __le16 fc;
2175 u16 len;
2176
2177 if (likely(!(iwl_debug_level & IWL_DL_TX)))
2178 return;
2179
2180 if (!priv->tx_traffic)
2181 return;
2182
2183 fc = header->frame_control;
2184 if (ieee80211_is_data(fc)) {
2185 len = (length > IWL_TRAFFIC_ENTRY_SIZE)
2186 ? IWL_TRAFFIC_ENTRY_SIZE : length;
2187 memcpy((priv->tx_traffic +
2188 (priv->tx_traffic_idx * IWL_TRAFFIC_ENTRY_SIZE)),
2189 header, len);
2190 priv->tx_traffic_idx =
2191 (priv->tx_traffic_idx + 1) % IWL_TRAFFIC_ENTRIES;
2192 }
2193}
2194EXPORT_SYMBOL(iwl_dbg_log_tx_data_frame);
2195
2196void iwl_dbg_log_rx_data_frame(struct iwl_priv *priv,
2197 u16 length, struct ieee80211_hdr *header)
2198{
2199 __le16 fc;
2200 u16 len;
2201
2202 if (likely(!(iwl_debug_level & IWL_DL_RX)))
2203 return;
2204
2205 if (!priv->rx_traffic)
2206 return;
2207
2208 fc = header->frame_control;
2209 if (ieee80211_is_data(fc)) {
2210 len = (length > IWL_TRAFFIC_ENTRY_SIZE)
2211 ? IWL_TRAFFIC_ENTRY_SIZE : length;
2212 memcpy((priv->rx_traffic +
2213 (priv->rx_traffic_idx * IWL_TRAFFIC_ENTRY_SIZE)),
2214 header, len);
2215 priv->rx_traffic_idx =
2216 (priv->rx_traffic_idx + 1) % IWL_TRAFFIC_ENTRIES;
2217 }
2218}
2219EXPORT_SYMBOL(iwl_dbg_log_rx_data_frame);
22fdf3c9
WYG		 2220
2221const char *get_mgmt_string(int cmd)
2222{
2223 switch (cmd) {
2224 IWL_CMD(MANAGEMENT_ASSOC_REQ);
2225 IWL_CMD(MANAGEMENT_ASSOC_RESP);
2226 IWL_CMD(MANAGEMENT_REASSOC_REQ);
2227 IWL_CMD(MANAGEMENT_REASSOC_RESP);
2228 IWL_CMD(MANAGEMENT_PROBE_REQ);
2229 IWL_CMD(MANAGEMENT_PROBE_RESP);
2230 IWL_CMD(MANAGEMENT_BEACON);
2231 IWL_CMD(MANAGEMENT_ATIM);
2232 IWL_CMD(MANAGEMENT_DISASSOC);
2233 IWL_CMD(MANAGEMENT_AUTH);
2234 IWL_CMD(MANAGEMENT_DEAUTH);
2235 IWL_CMD(MANAGEMENT_ACTION);
2236 default:
2237 return "UNKNOWN";
2238
2239 }
2240}
2241
2242const char *get_ctrl_string(int cmd)
2243{
2244 switch (cmd) {
2245 IWL_CMD(CONTROL_BACK_REQ);
2246 IWL_CMD(CONTROL_BACK);
2247 IWL_CMD(CONTROL_PSPOLL);
2248 IWL_CMD(CONTROL_RTS);
2249 IWL_CMD(CONTROL_CTS);
2250 IWL_CMD(CONTROL_ACK);
2251 IWL_CMD(CONTROL_CFEND);
2252 IWL_CMD(CONTROL_CFENDACK);
2253 default:
2254 return "UNKNOWN";
2255
2256 }
2257}
2258
7163b8a4 2259void iwl_clear_traffic_stats(struct iwl_priv *priv)
22fdf3c9
WYG		 2260{
2261 memset(&priv->tx_stats, 0, sizeof(struct traffic_stats));
22fdf3c9 2262 memset(&priv->rx_stats, 0, sizeof(struct traffic_stats));
7163b8a4 2263 priv->led_tpt = 0;
22fdf3c9
WYG		 2264}
2265
2266/*
2267 * if CONFIG_IWLWIFI_DEBUGFS defined, iwl_update_stats function will
2268 * record all the MGMT, CTRL and DATA pkt for both TX and Rx pass.
2269 * Use debugFs to display the rx/rx_statistics
2270 * if CONFIG_IWLWIFI_DEBUGFS not being defined, then no MGMT and CTRL
2271 * information will be recorded, but DATA pkt still will be recorded
2272 * for the reason of iwl_led.c need to control the led blinking based on
2273 * number of tx and rx data.
2274 *
2275 */
2276void iwl_update_stats(struct iwl_priv *priv, bool is_tx, __le16 fc, u16 len)
2277{
2278 struct traffic_stats *stats;
2279
2280 if (is_tx)
2281 stats = &priv->tx_stats;
2282 else
2283 stats = &priv->rx_stats;
2284
2285 if (ieee80211_is_mgmt(fc)) {
2286 switch (fc & cpu_to_le16(IEEE80211_FCTL_STYPE)) {
2287 case cpu_to_le16(IEEE80211_STYPE_ASSOC_REQ):
2288 stats->mgmt[MANAGEMENT_ASSOC_REQ]++;
2289 break;
2290 case cpu_to_le16(IEEE80211_STYPE_ASSOC_RESP):
2291 stats->mgmt[MANAGEMENT_ASSOC_RESP]++;
2292 break;
2293 case cpu_to_le16(IEEE80211_STYPE_REASSOC_REQ):
2294 stats->mgmt[MANAGEMENT_REASSOC_REQ]++;
2295 break;
2296 case cpu_to_le16(IEEE80211_STYPE_REASSOC_RESP):
2297 stats->mgmt[MANAGEMENT_REASSOC_RESP]++;
2298 break;
2299 case cpu_to_le16(IEEE80211_STYPE_PROBE_REQ):
2300 stats->mgmt[MANAGEMENT_PROBE_REQ]++;
2301 break;
2302 case cpu_to_le16(IEEE80211_STYPE_PROBE_RESP):
2303 stats->mgmt[MANAGEMENT_PROBE_RESP]++;
2304 break;
2305 case cpu_to_le16(IEEE80211_STYPE_BEACON):
2306 stats->mgmt[MANAGEMENT_BEACON]++;
2307 break;
2308 case cpu_to_le16(IEEE80211_STYPE_ATIM):
2309 stats->mgmt[MANAGEMENT_ATIM]++;
2310 break;
2311 case cpu_to_le16(IEEE80211_STYPE_DISASSOC):
2312 stats->mgmt[MANAGEMENT_DISASSOC]++;
2313 break;
2314 case cpu_to_le16(IEEE80211_STYPE_AUTH):
2315 stats->mgmt[MANAGEMENT_AUTH]++;
2316 break;
2317 case cpu_to_le16(IEEE80211_STYPE_DEAUTH):
2318 stats->mgmt[MANAGEMENT_DEAUTH]++;
2319 break;
2320 case cpu_to_le16(IEEE80211_STYPE_ACTION):
2321 stats->mgmt[MANAGEMENT_ACTION]++;
2322 break;
2323 }
2324 } else if (ieee80211_is_ctl(fc)) {
2325 switch (fc & cpu_to_le16(IEEE80211_FCTL_STYPE)) {
2326 case cpu_to_le16(IEEE80211_STYPE_BACK_REQ):
2327 stats->ctrl[CONTROL_BACK_REQ]++;
2328 break;
2329 case cpu_to_le16(IEEE80211_STYPE_BACK):
2330 stats->ctrl[CONTROL_BACK]++;
2331 break;
2332 case cpu_to_le16(IEEE80211_STYPE_PSPOLL):
2333 stats->ctrl[CONTROL_PSPOLL]++;
2334 break;
2335 case cpu_to_le16(IEEE80211_STYPE_RTS):
2336 stats->ctrl[CONTROL_RTS]++;
2337 break;
2338 case cpu_to_le16(IEEE80211_STYPE_CTS):
2339 stats->ctrl[CONTROL_CTS]++;
2340 break;
2341 case cpu_to_le16(IEEE80211_STYPE_ACK):
2342 stats->ctrl[CONTROL_ACK]++;
2343 break;
2344 case cpu_to_le16(IEEE80211_STYPE_CFEND):
2345 stats->ctrl[CONTROL_CFEND]++;
2346 break;
2347 case cpu_to_le16(IEEE80211_STYPE_CFENDACK):
2348 stats->ctrl[CONTROL_CFENDACK]++;
2349 break;
2350 }
2351 } else {
2352 /* data */
2353 stats->data_cnt++;
2354 stats->data_bytes += len;
2355 }
d5f4cf71 2356 iwl_leds_background(priv);
22fdf3c9
WYG		 2357}
2358EXPORT_SYMBOL(iwl_update_stats);
20594eb0
WYG		 2359#endif
2360
a93e7973 2361static void iwl_force_rf_reset(struct iwl_priv *priv)
afbdd69a
WYG		 2362{
2363 if (test_bit(STATUS_EXIT_PENDING, &priv->status))
2364 return;
2365
246ed355 2366 if (!iwl_is_any_associated(priv)) {
afbdd69a
WYG		 2367 IWL_DEBUG_SCAN(priv, "force reset rejected: not associated\n");
2368 return;
2369 }
2370 /*
2371 * There is no easy and better way to force reset the radio,
2372 * the only known method is switching channel which will force to
2373 * reset and tune the radio.
2374 * Use internal short scan (single channel) operation to should
2375 * achieve this objective.
2376 * Driver should reset the radio when number of consecutive missed
2377 * beacon, or any other uCode error condition detected.
2378 */
2379 IWL_DEBUG_INFO(priv, "perform radio reset.\n");
2380 iwl_internal_short_hw_scan(priv);
afbdd69a 2381}
a93e7973 2382
a93e7973 2383
c04f9f22 2384int iwl_force_reset(struct iwl_priv *priv, int mode, bool external)
a93e7973 2385{
8a472da4
WYG		 2386 struct iwl_force_reset *force_reset;
2387
a93e7973
WYG		 2388 if (test_bit(STATUS_EXIT_PENDING, &priv->status))
2389 return -EINVAL;
2390
8a472da4
WYG		 2391 if (mode >= IWL_MAX_FORCE_RESET) {
2392 IWL_DEBUG_INFO(priv, "invalid reset request.\n");
2393 return -EINVAL;
2394 }
2395 force_reset = &priv->force_reset[mode];
2396 force_reset->reset_request_count++;
c04f9f22
WYG		 2397 if (!external) {
2398 if (force_reset->last_force_reset_jiffies &&
2399 time_after(force_reset->last_force_reset_jiffies +
2400 force_reset->reset_duration, jiffies)) {
2401 IWL_DEBUG_INFO(priv, "force reset rejected\n");
2402 force_reset->reset_reject_count++;
2403 return -EAGAIN;
2404 }
a93e7973 2405 }
8a472da4
WYG		 2406 force_reset->reset_success_count++;
2407 force_reset->last_force_reset_jiffies = jiffies;
a93e7973 2408 IWL_DEBUG_INFO(priv, "perform force reset (%d)\n", mode);
a93e7973
WYG		 2409 switch (mode) {
2410 case IWL_RF_RESET:
2411 iwl_force_rf_reset(priv);
2412 break;
2413 case IWL_FW_RESET:
c04f9f22
WYG		 2414 /*
2415 * if the request is from external(ex: debugfs),
2416 * then always perform the request in regardless the module
2417 * parameter setting
2418 * if the request is from internal (uCode error or driver
2419 * detect failure), then fw_restart module parameter
2420 * need to be check before performing firmware reload
2421 */
2422 if (!external && !priv->cfg->mod_params->restart_fw) {
2423 IWL_DEBUG_INFO(priv, "Cancel firmware reload based on "
2424 "module parameter setting\n");
2425 break;
2426 }
a93e7973
WYG		 2427 IWL_ERR(priv, "On demand firmware reload\n");
2428 /* Set the FW error flag -- cleared on iwl_down */
2429 set_bit(STATUS_FW_ERROR, &priv->status);
2430 wake_up_interruptible(&priv->wait_command_queue);
2431 /*
2432 * Keep the restart process from trying to send host
2433 * commands by clearing the INIT status bit
2434 */
2435 clear_bit(STATUS_READY, &priv->status);
2436 queue_work(priv->workqueue, &priv->restart);
2437 break;
a93e7973 2438 }
a93e7973
WYG		 2439 return 0;
2440}
b74e31a9
WYG		 2441
2442/**
2443 * iwl_bg_monitor_recover - Timer callback to check for stuck queue and recover
2444 *
2445 * During normal condition (no queue is stuck), the timer is continually set to
2446 * execute every monitor_recover_period milliseconds after the last timer
2447 * expired. When the queue read_ptr is at the same place, the timer is
2448 * shorten to 100mSecs. This is
2449 * 1) to reduce the chance that the read_ptr may wrap around (not stuck)
2450 * 2) to detect the stuck queues quicker before the station and AP can
2451 * disassociate each other.
2452 *
2453 * This function monitors all the tx queues and recover from it if any
2454 * of the queues are stuck.
2455 * 1. It first check the cmd queue for stuck conditions. If it is stuck,
2456 * it will recover by resetting the firmware and return.
2457 * 2. Then, it checks for station association. If it associates it will check
2458 * other queues. If any queue is stuck, it will recover by resetting
2459 * the firmware.
2460 * Note: It the number of times the queue read_ptr to be at the same place to
2461 * be MAX_REPEAT+1 in order to consider to be stuck.
2462 */
2463/*
2464 * The maximum number of times the read pointer of the tx queue at the
2465 * same place without considering to be stuck.
2466 */
2467#define MAX_REPEAT (2)
2468static int iwl_check_stuck_queue(struct iwl_priv *priv, int cnt)
2469{
2470 struct iwl_tx_queue *txq;
2471 struct iwl_queue *q;
2472
2473 txq = &priv->txq[cnt];
2474 q = &txq->q;
2475 /* queue is empty, skip */
7cb1b088
WYG		 2476 if (q->read_ptr == q->write_ptr)
2477 return 0;
2478
2479 if (q->read_ptr == q->last_read_ptr) {
2480 /* a queue has not been read from last time */
2481 if (q->repeat_same_read_ptr > MAX_REPEAT) {
2482 IWL_ERR(priv,
2483 "queue %d stuck %d time. Fw reload.\n",
2484 q->id, q->repeat_same_read_ptr);
b74e31a9 2485 q->repeat_same_read_ptr = 0;
7cb1b088
WYG		 2486 iwl_force_reset(priv, IWL_FW_RESET, false);
2487 } else {
2488 q->repeat_same_read_ptr++;
2489 IWL_DEBUG_RADIO(priv,
2490 "queue %d, not read %d time\n",
2491 q->id,
2492 q->repeat_same_read_ptr);
de05ead8
WYG		 2493 mod_timer(&priv->monitor_recover,
2494 jiffies + msecs_to_jiffies(
2495 IWL_ONE_HUNDRED_MSECS));
2496 return 1;
b74e31a9 2497 }
7cb1b088
WYG		 2498 } else {
2499 q->last_read_ptr = q->read_ptr;
2500 q->repeat_same_read_ptr = 0;
b74e31a9
WYG		 2501 }
2502 return 0;
2503}
2504
2505void iwl_bg_monitor_recover(unsigned long data)
2506{
2507 struct iwl_priv *priv = (struct iwl_priv *)data;
2508 int cnt;
2509
2510 if (test_bit(STATUS_EXIT_PENDING, &priv->status))
2511 return;
2512
2513 /* monitor and check for stuck cmd queue */
13bb9483 2514 if (iwl_check_stuck_queue(priv, priv->cmd_queue))
b74e31a9
WYG		 2515 return;
2516
2517 /* monitor and check for other stuck queues */
246ed355 2518 if (iwl_is_any_associated(priv)) {
b74e31a9
WYG		 2519 for (cnt = 0; cnt < priv->hw_params.max_txq_num; cnt++) {
2520 /* skip as we already checked the command queue */
13bb9483 2521 if (cnt == priv->cmd_queue)
b74e31a9
WYG		 2522 continue;
2523 if (iwl_check_stuck_queue(priv, cnt))
2524 return;
2525 }
2526 }
7cb1b088 2527 if (priv->cfg->base_params->monitor_recover_period) {
7bdc473c
WYG		 2528 /*
2529 * Reschedule the timer to occur in
7cb1b088 2530 * priv->cfg->base_params->monitor_recover_period
7bdc473c
WYG		 2531 */
2532 mod_timer(&priv->monitor_recover, jiffies + msecs_to_jiffies(
7cb1b088 2533 priv->cfg->base_params->monitor_recover_period));
7bdc473c 2534 }
b74e31a9
WYG		 2535}
2536EXPORT_SYMBOL(iwl_bg_monitor_recover);
afbdd69a 2537
a0ee74cf
WYG		 2538
2539/*
2540 * extended beacon time format
2541 * time in usec will be changed into a 32-bit value in extended:internal format
2542 * the extended part is the beacon counts
2543 * the internal part is the time in usec within one beacon interval
2544 */
2545u32 iwl_usecs_to_beacons(struct iwl_priv *priv, u32 usec, u32 beacon_interval)
2546{
2547 u32 quot;
2548 u32 rem;
2549 u32 interval = beacon_interval * TIME_UNIT;
2550
2551 if (!interval || !usec)
2552 return 0;
2553
2554 quot = (usec / interval) &
2555 (iwl_beacon_time_mask_high(priv,
2556 priv->hw_params.beacon_time_tsf_bits) >>
2557 priv->hw_params.beacon_time_tsf_bits);
2558 rem = (usec % interval) & iwl_beacon_time_mask_low(priv,
2559 priv->hw_params.beacon_time_tsf_bits);
2560
2561 return (quot << priv->hw_params.beacon_time_tsf_bits) + rem;
2562}
2563EXPORT_SYMBOL(iwl_usecs_to_beacons);
2564
2565/* base is usually what we get from ucode with each received frame,
2566 * the same as HW timer counter counting down
2567 */
2568__le32 iwl_add_beacon_time(struct iwl_priv *priv, u32 base,
2569 u32 addon, u32 beacon_interval)
2570{
2571 u32 base_low = base & iwl_beacon_time_mask_low(priv,
2572 priv->hw_params.beacon_time_tsf_bits);
2573 u32 addon_low = addon & iwl_beacon_time_mask_low(priv,
2574 priv->hw_params.beacon_time_tsf_bits);
2575 u32 interval = beacon_interval * TIME_UNIT;
2576 u32 res = (base & iwl_beacon_time_mask_high(priv,
2577 priv->hw_params.beacon_time_tsf_bits)) +
2578 (addon & iwl_beacon_time_mask_high(priv,
2579 priv->hw_params.beacon_time_tsf_bits));
2580
2581 if (base_low > addon_low)
2582 res += base_low - addon_low;
2583 else if (base_low < addon_low) {
2584 res += interval + base_low - addon_low;
2585 res += (1 << priv->hw_params.beacon_time_tsf_bits);
2586 } else
2587 res += (1 << priv->hw_params.beacon_time_tsf_bits);
2588
2589 return cpu_to_le32(res);
2590}
2591EXPORT_SYMBOL(iwl_add_beacon_time);
2592
6da3a13e
WYG		 2593#ifdef CONFIG_PM
2594
f60dc013 2595int iwl_pci_suspend(struct device *device)
6da3a13e 2596{
f60dc013 2597 struct pci_dev *pdev = to_pci_dev(device);
6da3a13e
WYG		 2598 struct iwl_priv *priv = pci_get_drvdata(pdev);
2599
2600 /*
2601 * This function is called when system goes into suspend state
2602 * mac80211 will call iwl_mac_stop() from the mac80211 suspend function
2603 * first but since iwl_mac_stop() has no knowledge of who the caller is,
2604 * it will not call apm_ops.stop() to stop the DMA operation.
2605 * Calling apm_ops.stop here to make sure we stop the DMA.
2606 */
14e8e4af 2607 iwl_apm_stop(priv);
6da3a13e 2608
6da3a13e
WYG		 2609 return 0;
2610}
2611EXPORT_SYMBOL(iwl_pci_suspend);
2612
f60dc013 2613int iwl_pci_resume(struct device *device)
6da3a13e 2614{
f60dc013 2615 struct pci_dev *pdev = to_pci_dev(device);
6da3a13e 2616 struct iwl_priv *priv = pci_get_drvdata(pdev);
0ab84cff 2617 bool hw_rfkill = false;
6da3a13e 2618
cd398c31
AK		 2619 /*
2620 * We disable the RETRY_TIMEOUT register (0x41) to keep
2621 * PCI Tx retries from interfering with C3 CPU state.
2622 */
2623 pci_write_config_byte(pdev, PCI_CFG_RETRY_TIMEOUT, 0x00);
2624
6da3a13e
WYG		 2625 iwl_enable_interrupts(priv);
2626
0ab84cff
JB		 2627 if (!(iwl_read32(priv, CSR_GP_CNTRL) &
2628 CSR_GP_CNTRL_REG_FLAG_HW_RF_KILL_SW))
2629 hw_rfkill = true;
2630
2631 if (hw_rfkill)
2632 set_bit(STATUS_RF_KILL_HW, &priv->status);
2633 else
2634 clear_bit(STATUS_RF_KILL_HW, &priv->status);
2635
2636 wiphy_rfkill_set_hw_state(priv->hw->wiphy, hw_rfkill);
2637
6da3a13e
WYG		 2638 return 0;
2639}
2640EXPORT_SYMBOL(iwl_pci_resume);
2641
f60dc013
JL		 2642const struct dev_pm_ops iwl_pm_ops = {
2643 .suspend = iwl_pci_suspend,
2644 .resume = iwl_pci_resume,
2645 .freeze = iwl_pci_suspend,
2646 .thaw = iwl_pci_resume,
2647 .poweroff = iwl_pci_suspend,
2648 .restore = iwl_pci_resume,
2649};
2650EXPORT_SYMBOL(iwl_pm_ops);
2651
6da3a13e 2652#endif /* CONFIG_PM */
Linux kernel - Deliverables
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