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iwlagn: reduce redundant parameter definitions
[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
c7de35cd
RR		 72#define IWL_DECLARE_RATE_INFO(r, s, ip, in, rp, rn, pp, np) \
73 [IWL_RATE_##r##M_INDEX] = { IWL_RATE_##r##M_PLCP, \
74 IWL_RATE_SISO_##s##M_PLCP, \
75 IWL_RATE_MIMO2_##s##M_PLCP,\
76 IWL_RATE_MIMO3_##s##M_PLCP,\
77 IWL_RATE_##r##M_IEEE, \
78 IWL_RATE_##ip##M_INDEX, \
79 IWL_RATE_##in##M_INDEX, \
80 IWL_RATE_##rp##M_INDEX, \
81 IWL_RATE_##rn##M_INDEX, \
82 IWL_RATE_##pp##M_INDEX, \
83 IWL_RATE_##np##M_INDEX }
84
a562a9dd
RC		 85u32 iwl_debug_level;
86EXPORT_SYMBOL(iwl_debug_level);
87
c7de35cd
RR		 88/*
89 * Parameter order:
90 * rate, ht rate, prev rate, next rate, prev tgg rate, next tgg rate
91 *
92 * If there isn't a valid next or previous rate then INV is used which
93 * maps to IWL_RATE_INVALID
94 *
95 */
1826dcc0 96const struct iwl_rate_info iwl_rates[IWL_RATE_COUNT] = {
c7de35cd
RR		 97 IWL_DECLARE_RATE_INFO(1, INV, INV, 2, INV, 2, INV, 2), /* 1mbps */
98 IWL_DECLARE_RATE_INFO(2, INV, 1, 5, 1, 5, 1, 5), /* 2mbps */
99 IWL_DECLARE_RATE_INFO(5, INV, 2, 6, 2, 11, 2, 11), /*5.5mbps */
100 IWL_DECLARE_RATE_INFO(11, INV, 9, 12, 9, 12, 5, 18), /* 11mbps */
101 IWL_DECLARE_RATE_INFO(6, 6, 5, 9, 5, 11, 5, 11), /* 6mbps */
102 IWL_DECLARE_RATE_INFO(9, 6, 6, 11, 6, 11, 5, 11), /* 9mbps */
103 IWL_DECLARE_RATE_INFO(12, 12, 11, 18, 11, 18, 11, 18), /* 12mbps */
104 IWL_DECLARE_RATE_INFO(18, 18, 12, 24, 12, 24, 11, 24), /* 18mbps */
105 IWL_DECLARE_RATE_INFO(24, 24, 18, 36, 18, 36, 18, 36), /* 24mbps */
106 IWL_DECLARE_RATE_INFO(36, 36, 24, 48, 24, 48, 24, 48), /* 36mbps */
107 IWL_DECLARE_RATE_INFO(48, 48, 36, 54, 36, 54, 36, 54), /* 48mbps */
108 IWL_DECLARE_RATE_INFO(54, 54, 48, INV, 48, INV, 48, INV),/* 54mbps */
109 IWL_DECLARE_RATE_INFO(60, 60, 48, INV, 48, INV, 48, INV),/* 60mbps */
110 /* FIXME:RS: ^^ should be INV (legacy) */
111};
1826dcc0 112EXPORT_SYMBOL(iwl_rates);
c7de35cd 113
e7d326ac
TW		 114int iwl_hwrate_to_plcp_idx(u32 rate_n_flags)
115{
116 int idx = 0;
117
118 /* HT rate format */
119 if (rate_n_flags & RATE_MCS_HT_MSK) {
120 idx = (rate_n_flags & 0xff);
121
60d32215
DH		 122 if (idx >= IWL_RATE_MIMO3_6M_PLCP)
123 idx = idx - IWL_RATE_MIMO3_6M_PLCP;
124 else if (idx >= IWL_RATE_MIMO2_6M_PLCP)
e7d326ac
TW		 125 idx = idx - IWL_RATE_MIMO2_6M_PLCP;
126
127 idx += IWL_FIRST_OFDM_RATE;
128 /* skip 9M not supported in ht*/
129 if (idx >= IWL_RATE_9M_INDEX)
130 idx += 1;
131 if ((idx >= IWL_FIRST_OFDM_RATE) && (idx <= IWL_LAST_OFDM_RATE))
132 return idx;
133
134 /* legacy rate format, search for match in table */
135 } else {
136 for (idx = 0; idx < ARRAY_SIZE(iwl_rates); idx++)
137 if (iwl_rates[idx].plcp == (rate_n_flags & 0xFF))
138 return idx;
139 }
140
141 return -1;
142}
143EXPORT_SYMBOL(iwl_hwrate_to_plcp_idx);
144
0e1654fa 145u8 iwl_toggle_tx_ant(struct iwl_priv *priv, u8 ant, u8 valid)
76eff18b
TW		 146{
147 int i;
148 u8 ind = ant;
0e1654fa 149
bd6e2d57
JB		 150 if (priv->band == IEEE80211_BAND_2GHZ &&
151 priv->bt_traffic_load >= IWL_BT_COEX_TRAFFIC_LOAD_HIGH)
152 return 0;
153
76eff18b
TW		 154 for (i = 0; i < RATE_ANT_NUM - 1; i++) {
155 ind = (ind + 1) < RATE_ANT_NUM ? ind + 1 : 0;
0e1654fa 156 if (valid & BIT(ind))
76eff18b
TW		 157 return ind;
158 }
159 return ant;
160}
47ff65c4 161EXPORT_SYMBOL(iwl_toggle_tx_ant);
57bd1bea
TW		 162
163const u8 iwl_bcast_addr[ETH_ALEN] = { 0xFF, 0xFF, 0xFF, 0xFF, 0xFF, 0xFF };
164EXPORT_SYMBOL(iwl_bcast_addr);
165
166
1d0a082d
AK		 167/* This function both allocates and initializes hw and priv. */
168struct ieee80211_hw *iwl_alloc_all(struct iwl_cfg *cfg,
169 struct ieee80211_ops *hw_ops)
170{
171 struct iwl_priv *priv;
172
173 /* mac80211 allocates memory for this device instance, including
174 * space for this driver's private structure */
175 struct ieee80211_hw *hw =
176 ieee80211_alloc_hw(sizeof(struct iwl_priv), hw_ops);
177 if (hw == NULL) {
c96c31e4 178 pr_err("%s: Can not allocate network device\n",
a3139c59 179 cfg->name);
1d0a082d
AK		 180 goto out;
181 }
182
183 priv = hw->priv;
184 priv->hw = hw;
185
186out:
187 return hw;
188}
189EXPORT_SYMBOL(iwl_alloc_all);
190
14d2aac5
AK		 191/*
192 * QoS support
193*/
8dfdb9d5 194static void iwl_update_qos(struct iwl_priv *priv, struct iwl_rxon_context *ctx)
14d2aac5
AK		 195{
196 if (test_bit(STATUS_EXIT_PENDING, &priv->status))
197 return;
198
763cc3bf
JB		 199 if (!ctx->is_active)
200 return;
201
8dfdb9d5 202 ctx->qos_data.def_qos_parm.qos_flags = 0;
14d2aac5 203
8dfdb9d5
JB		 204 if (ctx->qos_data.qos_active)
205 ctx->qos_data.def_qos_parm.qos_flags |=
14d2aac5
AK		 206 QOS_PARAM_FLG_UPDATE_EDCA_MSK;
207
7e6a5886 208 if (ctx->ht.enabled)
8dfdb9d5 209 ctx->qos_data.def_qos_parm.qos_flags |= QOS_PARAM_FLG_TGN_MSK;
14d2aac5 210
e61146e3 211 IWL_DEBUG_QOS(priv, "send QoS cmd with Qos active=%d FLAGS=0x%X\n",
8dfdb9d5
JB		 212 ctx->qos_data.qos_active,
213 ctx->qos_data.def_qos_parm.qos_flags);
14d2aac5 214
8dfdb9d5 215 iwl_send_cmd_pdu_async(priv, ctx->qos_cmd,
e61146e3 216 sizeof(struct iwl_qosparam_cmd),
8dfdb9d5 217 &ctx->qos_data.def_qos_parm, NULL);
14d2aac5 218}
c7de35cd 219
d9fe60de
JB		 220#define MAX_BIT_RATE_40_MHZ 150 /* Mbps */
221#define MAX_BIT_RATE_20_MHZ 72 /* Mbps */
c7de35cd 222static void iwlcore_init_ht_hw_capab(const struct iwl_priv *priv,
d9fe60de 223 struct ieee80211_sta_ht_cap *ht_info,
c7de35cd
RR		 224 enum ieee80211_band band)
225{
39130df3
RR		 226 u16 max_bit_rate = 0;
227 u8 rx_chains_num = priv->hw_params.rx_chains_num;
228 u8 tx_chains_num = priv->hw_params.tx_chains_num;
229
c7de35cd 230 ht_info->cap = 0;
d9fe60de 231 memset(&ht_info->mcs, 0, sizeof(ht_info->mcs));
c7de35cd 232
d9fe60de 233 ht_info->ht_supported = true;
c7de35cd 234
7cb1b088
WYG		 235 if (priv->cfg->ht_params &&
236 priv->cfg->ht_params->ht_greenfield_support)
b261793d 237 ht_info->cap |= IEEE80211_HT_CAP_GRN_FLD;
d9fe60de 238 ht_info->cap |= IEEE80211_HT_CAP_SGI_20;
39130df3 239 max_bit_rate = MAX_BIT_RATE_20_MHZ;
7aafef1c 240 if (priv->hw_params.ht40_channel & BIT(band)) {
d9fe60de
JB		 241 ht_info->cap |= IEEE80211_HT_CAP_SUP_WIDTH_20_40;
242 ht_info->cap |= IEEE80211_HT_CAP_SGI_40;
243 ht_info->mcs.rx_mask[4] = 0x01;
39130df3 244 max_bit_rate = MAX_BIT_RATE_40_MHZ;
c7de35cd 245 }
c7de35cd
RR		 246
247 if (priv->cfg->mod_params->amsdu_size_8K)
d9fe60de 248 ht_info->cap |= IEEE80211_HT_CAP_MAX_AMSDU;
c7de35cd
RR		 249
250 ht_info->ampdu_factor = CFG_HT_RX_AMPDU_FACTOR_DEF;
7cb1b088
WYG		 251 if (priv->cfg->bt_params && priv->cfg->bt_params->ampdu_factor)
252 ht_info->ampdu_factor = priv->cfg->bt_params->ampdu_factor;
c7de35cd 253 ht_info->ampdu_density = CFG_HT_MPDU_DENSITY_DEF;
7cb1b088
WYG		 254 if (priv->cfg->bt_params && priv->cfg->bt_params->ampdu_density)
255 ht_info->ampdu_density = priv->cfg->bt_params->ampdu_density;
c7de35cd 256
d9fe60de 257 ht_info->mcs.rx_mask[0] = 0xFF;
39130df3 258 if (rx_chains_num >= 2)
d9fe60de 259 ht_info->mcs.rx_mask[1] = 0xFF;
39130df3 260 if (rx_chains_num >= 3)
d9fe60de 261 ht_info->mcs.rx_mask[2] = 0xFF;
39130df3
RR		 262
263 /* Highest supported Rx data rate */
264 max_bit_rate *= rx_chains_num;
d9fe60de
JB		 265 WARN_ON(max_bit_rate & ~IEEE80211_HT_MCS_RX_HIGHEST_MASK);
266 ht_info->mcs.rx_highest = cpu_to_le16(max_bit_rate);
39130df3
RR		 267
268 /* Tx MCS capabilities */
d9fe60de 269 ht_info->mcs.tx_params = IEEE80211_HT_MCS_TX_DEFINED;
39130df3 270 if (tx_chains_num != rx_chains_num) {
d9fe60de
JB		 271 ht_info->mcs.tx_params |= IEEE80211_HT_MCS_TX_RX_DIFF;
272 ht_info->mcs.tx_params |= ((tx_chains_num - 1) <<
273 IEEE80211_HT_MCS_TX_MAX_STREAMS_SHIFT);
39130df3 274 }
c7de35cd 275}
c7de35cd 276
c7de35cd
RR		 277/**
278 * iwlcore_init_geos - Initialize mac80211's geo/channel info based from eeprom
279 */
534166de 280int iwlcore_init_geos(struct iwl_priv *priv)
c7de35cd
RR		 281{
282 struct iwl_channel_info *ch;
283 struct ieee80211_supported_band *sband;
284 struct ieee80211_channel *channels;
285 struct ieee80211_channel *geo_ch;
286 struct ieee80211_rate *rates;
287 int i = 0;
288
289 if (priv->bands[IEEE80211_BAND_2GHZ].n_bitrates ||
290 priv->bands[IEEE80211_BAND_5GHZ].n_bitrates) {
e1623446 291 IWL_DEBUG_INFO(priv, "Geography modes already initialized.\n");
c7de35cd
RR		 292 set_bit(STATUS_GEO_CONFIGURED, &priv->status);
293 return 0;
294 }
295
296 channels = kzalloc(sizeof(struct ieee80211_channel) *
297 priv->channel_count, GFP_KERNEL);
298 if (!channels)
299 return -ENOMEM;
300
5027309b 301 rates = kzalloc((sizeof(struct ieee80211_rate) * IWL_RATE_COUNT_LEGACY),
c7de35cd
RR		 302 GFP_KERNEL);
303 if (!rates) {
304 kfree(channels);
305 return -ENOMEM;
306 }
307
308 /* 5.2GHz channels start after the 2.4GHz channels */
309 sband = &priv->bands[IEEE80211_BAND_5GHZ];
310 sband->channels = &channels[ARRAY_SIZE(iwl_eeprom_band_1)];
311 /* just OFDM */
312 sband->bitrates = &rates[IWL_FIRST_OFDM_RATE];
5027309b 313 sband->n_bitrates = IWL_RATE_COUNT_LEGACY - IWL_FIRST_OFDM_RATE;
c7de35cd 314
49779293 315 if (priv->cfg->sku & IWL_SKU_N)
d9fe60de 316 iwlcore_init_ht_hw_capab(priv, &sband->ht_cap,
49779293 317 IEEE80211_BAND_5GHZ);
c7de35cd
RR		 318
319 sband = &priv->bands[IEEE80211_BAND_2GHZ];
320 sband->channels = channels;
321 /* OFDM & CCK */
322 sband->bitrates = rates;
5027309b 323 sband->n_bitrates = IWL_RATE_COUNT_LEGACY;
c7de35cd 324
49779293 325 if (priv->cfg->sku & IWL_SKU_N)
d9fe60de 326 iwlcore_init_ht_hw_capab(priv, &sband->ht_cap,
49779293 327 IEEE80211_BAND_2GHZ);
c7de35cd
RR		 328
329 priv->ieee_channels = channels;
330 priv->ieee_rates = rates;
331
c7de35cd
RR		 332 for (i = 0; i < priv->channel_count; i++) {
333 ch = &priv->channel_info[i];
334
335 /* FIXME: might be removed if scan is OK */
336 if (!is_channel_valid(ch))
337 continue;
338
339 if (is_channel_a_band(ch))
340 sband = &priv->bands[IEEE80211_BAND_5GHZ];
341 else
342 sband = &priv->bands[IEEE80211_BAND_2GHZ];
343
344 geo_ch = &sband->channels[sband->n_channels++];
345
346 geo_ch->center_freq =
347 ieee80211_channel_to_frequency(ch->channel);
348 geo_ch->max_power = ch->max_power_avg;
349 geo_ch->max_antenna_gain = 0xff;
350 geo_ch->hw_value = ch->channel;
351
352 if (is_channel_valid(ch)) {
353 if (!(ch->flags & EEPROM_CHANNEL_IBSS))
354 geo_ch->flags |= IEEE80211_CHAN_NO_IBSS;
355
356 if (!(ch->flags & EEPROM_CHANNEL_ACTIVE))
357 geo_ch->flags |= IEEE80211_CHAN_PASSIVE_SCAN;
358
359 if (ch->flags & EEPROM_CHANNEL_RADAR)
360 geo_ch->flags |= IEEE80211_CHAN_RADAR;
361
7aafef1c 362 geo_ch->flags |= ch->ht40_extension_channel;
4d38c2e8 363
dc1b0973
WYG		 364 if (ch->max_power_avg > priv->tx_power_device_lmt)
365 priv->tx_power_device_lmt = ch->max_power_avg;
c7de35cd
RR		 366 } else {
367 geo_ch->flags |= IEEE80211_CHAN_DISABLED;
368 }
369
e1623446 370 IWL_DEBUG_INFO(priv, "Channel %d Freq=%d[%sGHz] %s flag=0x%X\n",
c7de35cd
RR		 371 ch->channel, geo_ch->center_freq,
372 is_channel_a_band(ch) ? "5.2" : "2.4",
373 geo_ch->flags & IEEE80211_CHAN_DISABLED ?
374 "restricted" : "valid",
375 geo_ch->flags);
376 }
377
378 if ((priv->bands[IEEE80211_BAND_5GHZ].n_channels == 0) &&
379 priv->cfg->sku & IWL_SKU_A) {
978785a3
TW		 380 IWL_INFO(priv, "Incorrectly detected BG card as ABG. "
381 "Please send your PCI ID 0x%04X:0x%04X to maintainer.\n",
a3139c59
SO		 382 priv->pci_dev->device,
383 priv->pci_dev->subsystem_device);
c7de35cd
RR		 384 priv->cfg->sku &= ~IWL_SKU_A;
385 }
386
978785a3 387 IWL_INFO(priv, "Tunable channels: %d 802.11bg, %d 802.11a channels\n",
a3139c59
SO		 388 priv->bands[IEEE80211_BAND_2GHZ].n_channels,
389 priv->bands[IEEE80211_BAND_5GHZ].n_channels);
c7de35cd
RR		 390
391 set_bit(STATUS_GEO_CONFIGURED, &priv->status);
392
393 return 0;
394}
534166de 395EXPORT_SYMBOL(iwlcore_init_geos);
c7de35cd
RR		 396
397/*
398 * iwlcore_free_geos - undo allocations in iwlcore_init_geos
399 */
534166de 400void iwlcore_free_geos(struct iwl_priv *priv)
c7de35cd
RR		 401{
402 kfree(priv->ieee_channels);
403 kfree(priv->ieee_rates);
404 clear_bit(STATUS_GEO_CONFIGURED, &priv->status);
405}
534166de 406EXPORT_SYMBOL(iwlcore_free_geos);
c7de35cd 407
37dc70fe 408/*
94597ab2 409 * iwlcore_tx_cmd_protection: Set rts/cts. 3945 and 4965 only share this
37dc70fe
AK		 410 * function.
411 */
94597ab2
JB		 412void iwlcore_tx_cmd_protection(struct iwl_priv *priv,
413 struct ieee80211_tx_info *info,
414 __le16 fc, __le32 *tx_flags)
37dc70fe
AK		 415{
416 if (info->control.rates[0].flags & IEEE80211_TX_RC_USE_RTS_CTS) {
417 *tx_flags |= TX_CMD_FLG_RTS_MSK;
418 *tx_flags &= ~TX_CMD_FLG_CTS_MSK;
94597ab2
JB		 419 *tx_flags |= TX_CMD_FLG_FULL_TXOP_PROT_MSK;
420
421 if (!ieee80211_is_mgmt(fc))
422 return;
423
424 switch (fc & cpu_to_le16(IEEE80211_FCTL_STYPE)) {
425 case cpu_to_le16(IEEE80211_STYPE_AUTH):
426 case cpu_to_le16(IEEE80211_STYPE_DEAUTH):
427 case cpu_to_le16(IEEE80211_STYPE_ASSOC_REQ):
428 case cpu_to_le16(IEEE80211_STYPE_REASSOC_REQ):
429 *tx_flags &= ~TX_CMD_FLG_RTS_MSK;
430 *tx_flags |= TX_CMD_FLG_CTS_MSK;
431 break;
432 }
37dc70fe
AK		 433 } else if (info->control.rates[0].flags & IEEE80211_TX_RC_USE_CTS_PROTECT) {
434 *tx_flags &= ~TX_CMD_FLG_RTS_MSK;
435 *tx_flags |= TX_CMD_FLG_CTS_MSK;
94597ab2 436 *tx_flags |= TX_CMD_FLG_FULL_TXOP_PROT_MSK;
37dc70fe
AK		 437 }
438}
94597ab2
JB		 439EXPORT_SYMBOL(iwlcore_tx_cmd_protection);
440
37dc70fe 441
28a6b07a 442static bool is_single_rx_stream(struct iwl_priv *priv)
c7de35cd 443{
ba37a3d0 444 return priv->current_ht_config.smps == IEEE80211_SMPS_STATIC ||
02bb1bea 445 priv->current_ht_config.single_chain_sufficient;
c7de35cd 446}
963f5517 447
7e6a5886
JB		 448static bool iwl_is_channel_extension(struct iwl_priv *priv,
449 enum ieee80211_band band,
450 u16 channel, u8 extension_chan_offset)
47c5196e
TW		 451{
452 const struct iwl_channel_info *ch_info;
453
454 ch_info = iwl_get_channel_info(priv, band, channel);
455 if (!is_channel_valid(ch_info))
7e6a5886 456 return false;
47c5196e 457
d9fe60de 458 if (extension_chan_offset == IEEE80211_HT_PARAM_CHA_SEC_ABOVE)
7aafef1c 459 return !(ch_info->ht40_extension_channel &
689da1b3 460 IEEE80211_CHAN_NO_HT40PLUS);
d9fe60de 461 else if (extension_chan_offset == IEEE80211_HT_PARAM_CHA_SEC_BELOW)
7aafef1c 462 return !(ch_info->ht40_extension_channel &
689da1b3 463 IEEE80211_CHAN_NO_HT40MINUS);
47c5196e 464
7e6a5886 465 return false;
47c5196e
TW		 466}
467
7e6a5886
JB		 468bool iwl_is_ht40_tx_allowed(struct iwl_priv *priv,
469 struct iwl_rxon_context *ctx,
470 struct ieee80211_sta_ht_cap *ht_cap)
47c5196e 471{
7e6a5886
JB		 472 if (!ctx->ht.enabled || !ctx->ht.is_40mhz)
473 return false;
47c5196e 474
7e6a5886
JB		 475 /*
476 * We do not check for IEEE80211_HT_CAP_SUP_WIDTH_20_40
a2b0f02e
WYG		 477 * the bit will not set if it is pure 40MHz case
478 */
7e6a5886
JB		 479 if (ht_cap && !ht_cap->ht_supported)
480 return false;
481
d73e4923 482#ifdef CONFIG_IWLWIFI_DEBUGFS
1e4247d4 483 if (priv->disable_ht40)
7e6a5886 484 return false;
1e4247d4 485#endif
7e6a5886 486
611d3eb7 487 return iwl_is_channel_extension(priv, priv->band,
246ed355 488 le16_to_cpu(ctx->staging.channel),
7e6a5886 489 ctx->ht.extension_chan_offset);
47c5196e 490}
7aafef1c 491EXPORT_SYMBOL(iwl_is_ht40_tx_allowed);
47c5196e 492
2c2f3b33
TW		 493static u16 iwl_adjust_beacon_interval(u16 beacon_val, u16 max_beacon_val)
494{
ea196fdb
JB		 495 u16 new_val;
496 u16 beacon_factor;
497
498 /*
499 * If mac80211 hasn't given us a beacon interval, program
500 * the default into the device (not checking this here
501 * would cause the adjustment below to return the maximum
502 * value, which may break PAN.)
503 */
504 if (!beacon_val)
505 return DEFAULT_BEACON_INTERVAL;
506
507 /*
508 * If the beacon interval we obtained from the peer
509 * is too large, we'll have to wake up more often
510 * (and in IBSS case, we'll beacon too much)
511 *
512 * For example, if max_beacon_val is 4096, and the
513 * requested beacon interval is 7000, we'll have to
514 * use 3500 to be able to wake up on the beacons.
515 *
516 * This could badly influence beacon detection stats.
517 */
2c2f3b33
TW		 518
519 beacon_factor = (beacon_val + max_beacon_val) / max_beacon_val;
520 new_val = beacon_val / beacon_factor;
521
522 if (!new_val)
523 new_val = max_beacon_val;
524
525 return new_val;
526}
527
47313e34 528int iwl_send_rxon_timing(struct iwl_priv *priv, struct iwl_rxon_context *ctx)
2c2f3b33
TW		 529{
530 u64 tsf;
531 s32 interval_tm, rem;
2c2f3b33
TW		 532 struct ieee80211_conf *conf = NULL;
533 u16 beacon_int;
47313e34 534 struct ieee80211_vif *vif = ctx->vif;
2c2f3b33
TW		 535
536 conf = ieee80211_get_hw_conf(priv->hw);
537
948f5a2f
JB		 538 lockdep_assert_held(&priv->mutex);
539
246ed355 540 memset(&ctx->timing, 0, sizeof(struct iwl_rxon_time_cmd));
948f5a2f 541
246ed355
JB		 542 ctx->timing.timestamp = cpu_to_le64(priv->timestamp);
543 ctx->timing.listen_interval = cpu_to_le16(conf->listen_interval);
2c2f3b33 544
47313e34 545 beacon_int = vif ? vif->bss_conf.beacon_int : 0;
2c2f3b33 546
47313e34
JB		 547 /*
548 * TODO: For IBSS we need to get atim_window from mac80211,
549 * for now just always use 0
550 */
551 ctx->timing.atim_window = 0;
2c2f3b33 552
bde4530e 553 if (ctx->ctxid == IWL_RXON_CTX_PAN &&
f1f270b2
JB		 554 (!ctx->vif || ctx->vif->type != NL80211_IFTYPE_STATION) &&
555 iwl_is_associated(priv, IWL_RXON_CTX_BSS) &&
556 priv->contexts[IWL_RXON_CTX_BSS].vif &&
557 priv->contexts[IWL_RXON_CTX_BSS].vif->bss_conf.beacon_int) {
bde4530e
JB		 558 ctx->timing.beacon_interval =
559 priv->contexts[IWL_RXON_CTX_BSS].timing.beacon_interval;
560 beacon_int = le16_to_cpu(ctx->timing.beacon_interval);
f1f270b2
JB		 561 } else if (ctx->ctxid == IWL_RXON_CTX_BSS &&
562 iwl_is_associated(priv, IWL_RXON_CTX_PAN) &&
563 priv->contexts[IWL_RXON_CTX_PAN].vif &&
564 priv->contexts[IWL_RXON_CTX_PAN].vif->bss_conf.beacon_int &&
565 (!iwl_is_associated_ctx(ctx) || !ctx->vif ||
566 !ctx->vif->bss_conf.beacon_int)) {
567 ctx->timing.beacon_interval =
568 priv->contexts[IWL_RXON_CTX_PAN].timing.beacon_interval;
569 beacon_int = le16_to_cpu(ctx->timing.beacon_interval);
bde4530e
JB		 570 } else {
571 beacon_int = iwl_adjust_beacon_interval(beacon_int,
f8525e55 572 priv->hw_params.max_beacon_itrvl * TIME_UNIT);
bde4530e
JB		 573 ctx->timing.beacon_interval = cpu_to_le16(beacon_int);
574 }
2c2f3b33
TW		 575
576 tsf = priv->timestamp; /* tsf is modifed by do_div: copy it */
f8525e55 577 interval_tm = beacon_int * TIME_UNIT;
2c2f3b33 578 rem = do_div(tsf, interval_tm);
246ed355 579 ctx->timing.beacon_init_val = cpu_to_le32(interval_tm - rem);
2c2f3b33 580
47313e34 581 ctx->timing.dtim_period = vif ? (vif->bss_conf.dtim_period ?: 1) : 1;
2491fa42 582
2c2f3b33
TW		 583 IWL_DEBUG_ASSOC(priv,
584 "beacon interval %d beacon timer %d beacon tim %d\n",
246ed355
JB		 585 le16_to_cpu(ctx->timing.beacon_interval),
586 le32_to_cpu(ctx->timing.beacon_init_val),
587 le16_to_cpu(ctx->timing.atim_window));
948f5a2f 588
8f2d3d2a 589 return iwl_send_cmd_pdu(priv, ctx->rxon_timing_cmd,
246ed355 590 sizeof(ctx->timing), &ctx->timing);
2c2f3b33 591}
948f5a2f 592EXPORT_SYMBOL(iwl_send_rxon_timing);
2c2f3b33 593
246ed355
JB		 594void iwl_set_rxon_hwcrypto(struct iwl_priv *priv, struct iwl_rxon_context *ctx,
595 int hw_decrypt)
8ccde88a 596{
246ed355 597 struct iwl_rxon_cmd *rxon = &ctx->staging;
8ccde88a
SO		 598
599 if (hw_decrypt)
600 rxon->filter_flags &= ~RXON_FILTER_DIS_DECRYPT_MSK;
601 else
602 rxon->filter_flags |= RXON_FILTER_DIS_DECRYPT_MSK;
603
604}
605EXPORT_SYMBOL(iwl_set_rxon_hwcrypto);
606
607/**
608 * iwl_check_rxon_cmd - validate RXON structure is valid
609 *
610 * NOTE: This is really only useful during development and can eventually
611 * be #ifdef'd out once the driver is stable and folks aren't actively
612 * making changes
613 */
246ed355 614int iwl_check_rxon_cmd(struct iwl_priv *priv, struct iwl_rxon_context *ctx)
8ccde88a
SO		 615{
616 int error = 0;
617 int counter = 1;
246ed355 618 struct iwl_rxon_cmd *rxon = &ctx->staging;
8ccde88a
SO		 619
620 if (rxon->flags & RXON_FLG_BAND_24G_MSK) {
621 error |= le32_to_cpu(rxon->flags &
622 (RXON_FLG_TGJ_NARROW_BAND_MSK |
623 RXON_FLG_RADAR_DETECT_MSK));
624 if (error)
625 IWL_WARN(priv, "check 24G fields %d | %d\n",
626 counter++, error);
627 } else {
628 error |= (rxon->flags & RXON_FLG_SHORT_SLOT_MSK) ?
629 0 : le32_to_cpu(RXON_FLG_SHORT_SLOT_MSK);
630 if (error)
631 IWL_WARN(priv, "check 52 fields %d | %d\n",
632 counter++, error);
633 error |= le32_to_cpu(rxon->flags & RXON_FLG_CCK_MSK);
634 if (error)
635 IWL_WARN(priv, "check 52 CCK %d | %d\n",
636 counter++, error);
637 }
638 error |= (rxon->node_addr[0] | rxon->bssid_addr[0]) & 0x1;
639 if (error)
640 IWL_WARN(priv, "check mac addr %d | %d\n", counter++, error);
641
642 /* make sure basic rates 6Mbps and 1Mbps are supported */
643 error |= (((rxon->ofdm_basic_rates & IWL_RATE_6M_MASK) == 0) &&
644 ((rxon->cck_basic_rates & IWL_RATE_1M_MASK) == 0));
645 if (error)
646 IWL_WARN(priv, "check basic rate %d | %d\n", counter++, error);
647
648 error |= (le16_to_cpu(rxon->assoc_id) > 2007);
649 if (error)
650 IWL_WARN(priv, "check assoc id %d | %d\n", counter++, error);
651
652 error |= ((rxon->flags & (RXON_FLG_CCK_MSK | RXON_FLG_SHORT_SLOT_MSK))
653 == (RXON_FLG_CCK_MSK | RXON_FLG_SHORT_SLOT_MSK));
654 if (error)
655 IWL_WARN(priv, "check CCK and short slot %d | %d\n",
656 counter++, error);
657
658 error |= ((rxon->flags & (RXON_FLG_CCK_MSK | RXON_FLG_AUTO_DETECT_MSK))
659 == (RXON_FLG_CCK_MSK | RXON_FLG_AUTO_DETECT_MSK));
660 if (error)
661 IWL_WARN(priv, "check CCK & auto detect %d | %d\n",
662 counter++, error);
663
664 error |= ((rxon->flags & (RXON_FLG_AUTO_DETECT_MSK |
665 RXON_FLG_TGG_PROTECT_MSK)) == RXON_FLG_TGG_PROTECT_MSK);
666 if (error)
667 IWL_WARN(priv, "check TGG and auto detect %d | %d\n",
668 counter++, error);
669
670 if (error)
671 IWL_WARN(priv, "Tuning to channel %d\n",
672 le16_to_cpu(rxon->channel));
673
674 if (error) {
675 IWL_ERR(priv, "Not a valid iwl_rxon_assoc_cmd field values\n");
676 return -1;
677 }
678 return 0;
679}
680EXPORT_SYMBOL(iwl_check_rxon_cmd);
681
682/**
683 * iwl_full_rxon_required - check if full RXON (vs RXON_ASSOC) cmd is needed
684 * @priv: staging_rxon is compared to active_rxon
685 *
686 * If the RXON structure is changing enough to require a new tune,
687 * or is clearing the RXON_FILTER_ASSOC_MSK, then return 1 to indicate that
688 * a new tune (full RXON command, rather than RXON_ASSOC cmd) is required.
689 */
246ed355
JB		 690int iwl_full_rxon_required(struct iwl_priv *priv,
691 struct iwl_rxon_context *ctx)
8ccde88a 692{
246ed355
JB		 693 const struct iwl_rxon_cmd *staging = &ctx->staging;
694 const struct iwl_rxon_cmd *active = &ctx->active;
695
696#define CHK(cond) \
697 if ((cond)) { \
698 IWL_DEBUG_INFO(priv, "need full RXON - " #cond "\n"); \
699 return 1; \
700 }
701
702#define CHK_NEQ(c1, c2) \
703 if ((c1) != (c2)) { \
704 IWL_DEBUG_INFO(priv, "need full RXON - " \
705 #c1 " != " #c2 " - %d != %d\n", \
706 (c1), (c2)); \
707 return 1; \
708 }
8ccde88a
SO		 709
710 /* These items are only settable from the full RXON command */
246ed355
JB		 711 CHK(!iwl_is_associated_ctx(ctx));
712 CHK(compare_ether_addr(staging->bssid_addr, active->bssid_addr));
713 CHK(compare_ether_addr(staging->node_addr, active->node_addr));
714 CHK(compare_ether_addr(staging->wlap_bssid_addr,
715 active->wlap_bssid_addr));
716 CHK_NEQ(staging->dev_type, active->dev_type);
717 CHK_NEQ(staging->channel, active->channel);
718 CHK_NEQ(staging->air_propagation, active->air_propagation);
719 CHK_NEQ(staging->ofdm_ht_single_stream_basic_rates,
720 active->ofdm_ht_single_stream_basic_rates);
721 CHK_NEQ(staging->ofdm_ht_dual_stream_basic_rates,
722 active->ofdm_ht_dual_stream_basic_rates);
723 CHK_NEQ(staging->ofdm_ht_triple_stream_basic_rates,
724 active->ofdm_ht_triple_stream_basic_rates);
725 CHK_NEQ(staging->assoc_id, active->assoc_id);
8ccde88a
SO		 726
727 /* flags, filter_flags, ofdm_basic_rates, and cck_basic_rates can
728 * be updated with the RXON_ASSOC command -- however only some
729 * flag transitions are allowed using RXON_ASSOC */
730
731 /* Check if we are not switching bands */
246ed355
JB		 732 CHK_NEQ(staging->flags & RXON_FLG_BAND_24G_MSK,
733 active->flags & RXON_FLG_BAND_24G_MSK);
8ccde88a
SO		 734
735 /* Check if we are switching association toggle */
246ed355
JB		 736 CHK_NEQ(staging->filter_flags & RXON_FILTER_ASSOC_MSK,
737 active->filter_flags & RXON_FILTER_ASSOC_MSK);
738
739#undef CHK
740#undef CHK_NEQ
8ccde88a
SO		 741
742 return 0;
743}
744EXPORT_SYMBOL(iwl_full_rxon_required);
745
76d04815
JB		 746u8 iwl_rate_get_lowest_plcp(struct iwl_priv *priv,
747 struct iwl_rxon_context *ctx)
8ccde88a 748{
4a02886b
JB		 749 /*
750 * Assign the lowest rate -- should really get this from
751 * the beacon skb from mac80211.
752 */
246ed355 753 if (ctx->staging.flags & RXON_FLG_BAND_24G_MSK)
8ccde88a
SO		 754 return IWL_RATE_1M_PLCP;
755 else
756 return IWL_RATE_6M_PLCP;
757}
758EXPORT_SYMBOL(iwl_rate_get_lowest_plcp);
759
246ed355
JB		 760static void _iwl_set_rxon_ht(struct iwl_priv *priv,
761 struct iwl_ht_config *ht_conf,
762 struct iwl_rxon_context *ctx)
47c5196e 763{
246ed355 764 struct iwl_rxon_cmd *rxon = &ctx->staging;
47c5196e 765
7e6a5886 766 if (!ctx->ht.enabled) {
a2b0f02e 767 rxon->flags &= ~(RXON_FLG_CHANNEL_MODE_MSK |
42eb7c64 768 RXON_FLG_CTRL_CHANNEL_LOC_HI_MSK |
7aafef1c 769 RXON_FLG_HT40_PROT_MSK |
42eb7c64 770 RXON_FLG_HT_PROT_MSK);
47c5196e 771 return;
42eb7c64 772 }
47c5196e 773
7e6a5886 774 /* FIXME: if the definition of ht.protection changed, the "translation"
a2b0f02e
WYG		 775 * will be needed for rxon->flags
776 */
7e6a5886 777 rxon->flags |= cpu_to_le32(ctx->ht.protection << RXON_FLG_HT_OPERATING_MODE_POS);
a2b0f02e
WYG		 778
779 /* Set up channel bandwidth:
7aafef1c 780 * 20 MHz only, 20/40 mixed or pure 40 if ht40 ok */
a2b0f02e
WYG		 781 /* clear the HT channel mode before set the mode */
782 rxon->flags &= ~(RXON_FLG_CHANNEL_MODE_MSK |
783 RXON_FLG_CTRL_CHANNEL_LOC_HI_MSK);
7e6a5886 784 if (iwl_is_ht40_tx_allowed(priv, ctx, NULL)) {
7aafef1c 785 /* pure ht40 */
7e6a5886 786 if (ctx->ht.protection == IEEE80211_HT_OP_MODE_PROTECTION_20MHZ) {
a2b0f02e 787 rxon->flags |= RXON_FLG_CHANNEL_MODE_PURE_40;
508b08e7 788 /* Note: control channel is opposite of extension channel */
7e6a5886 789 switch (ctx->ht.extension_chan_offset) {
508b08e7
WYG		 790 case IEEE80211_HT_PARAM_CHA_SEC_ABOVE:
791 rxon->flags &= ~RXON_FLG_CTRL_CHANNEL_LOC_HI_MSK;
792 break;
793 case IEEE80211_HT_PARAM_CHA_SEC_BELOW:
794 rxon->flags |= RXON_FLG_CTRL_CHANNEL_LOC_HI_MSK;
795 break;
796 }
797 } else {
a2b0f02e 798 /* Note: control channel is opposite of extension channel */
7e6a5886 799 switch (ctx->ht.extension_chan_offset) {
a2b0f02e
WYG		 800 case IEEE80211_HT_PARAM_CHA_SEC_ABOVE:
801 rxon->flags &= ~(RXON_FLG_CTRL_CHANNEL_LOC_HI_MSK);
802 rxon->flags |= RXON_FLG_CHANNEL_MODE_MIXED;
803 break;
804 case IEEE80211_HT_PARAM_CHA_SEC_BELOW:
805 rxon->flags |= RXON_FLG_CTRL_CHANNEL_LOC_HI_MSK;
806 rxon->flags |= RXON_FLG_CHANNEL_MODE_MIXED;
807 break;
808 case IEEE80211_HT_PARAM_CHA_SEC_NONE:
809 default:
810 /* channel location only valid if in Mixed mode */
811 IWL_ERR(priv, "invalid extension channel offset\n");
812 break;
813 }
814 }
815 } else {
816 rxon->flags |= RXON_FLG_CHANNEL_MODE_LEGACY;
47c5196e
TW		 817 }
818
45823531 819 if (priv->cfg->ops->hcmd->set_rxon_chain)
246ed355 820 priv->cfg->ops->hcmd->set_rxon_chain(priv, ctx);
47c5196e 821
02bb1bea 822 IWL_DEBUG_ASSOC(priv, "rxon flags 0x%X operation mode :0x%X "
ae5eb026 823 "extension channel offset 0x%x\n",
7e6a5886
JB		 824 le32_to_cpu(rxon->flags), ctx->ht.protection,
825 ctx->ht.extension_chan_offset);
47c5196e 826}
246ed355
JB		 827
828void iwl_set_rxon_ht(struct iwl_priv *priv, struct iwl_ht_config *ht_conf)
829{
830 struct iwl_rxon_context *ctx;
831
832 for_each_context(priv, ctx)
833 _iwl_set_rxon_ht(priv, ht_conf, ctx);
834}
47c5196e
TW		 835EXPORT_SYMBOL(iwl_set_rxon_ht);
836
9e5e6c32
TW		 837#define IWL_NUM_RX_CHAINS_MULTIPLE 3
838#define IWL_NUM_RX_CHAINS_SINGLE 2
839#define IWL_NUM_IDLE_CHAINS_DUAL 2
840#define IWL_NUM_IDLE_CHAINS_SINGLE 1
841
2b396a12
JB		 842/*
843 * Determine how many receiver/antenna chains to use.
844 *
845 * More provides better reception via diversity. Fewer saves power
846 * at the expense of throughput, but only when not in powersave to
847 * start with.
848 *
c7de35cd
RR		 849 * MIMO (dual stream) requires at least 2, but works better with 3.
850 * This does not determine *which* chains to use, just how many.
851 */
28a6b07a 852static int iwl_get_active_rx_chain_count(struct iwl_priv *priv)
c7de35cd 853{
7cb1b088
WYG		 854 if (priv->cfg->bt_params &&
855 priv->cfg->bt_params->advanced_bt_coexist &&
856 (priv->bt_full_concurrent ||
857 priv->bt_traffic_load >= IWL_BT_COEX_TRAFFIC_LOAD_HIGH)) {
da5dbb97
WYG		 858 /*
859 * only use chain 'A' in bt high traffic load or
860 * full concurrency mode
861 */
bee008b7
WYG		 862 return IWL_NUM_RX_CHAINS_SINGLE;
863 }
c7de35cd 864 /* # of Rx chains to use when expecting MIMO. */
02bb1bea 865 if (is_single_rx_stream(priv))
9e5e6c32 866 return IWL_NUM_RX_CHAINS_SINGLE;
c7de35cd 867 else
9e5e6c32 868 return IWL_NUM_RX_CHAINS_MULTIPLE;
28a6b07a 869}
c7de35cd 870
2b396a12 871/*
3f3e0376
WYG		 872 * When we are in power saving mode, unless device support spatial
873 * multiplexing power save, use the active count for rx chain count.
2b396a12 874 */
28a6b07a
TW		 875static int iwl_get_idle_rx_chain_count(struct iwl_priv *priv, int active_cnt)
876{
ba37a3d0
JB		 877 /* # Rx chains when idling, depending on SMPS mode */
878 switch (priv->current_ht_config.smps) {
879 case IEEE80211_SMPS_STATIC:
880 case IEEE80211_SMPS_DYNAMIC:
881 return IWL_NUM_IDLE_CHAINS_SINGLE;
882 case IEEE80211_SMPS_OFF:
883 return active_cnt;
c15d20c1 884 default:
ba37a3d0
JB		 885 WARN(1, "invalid SMPS mode %d",
886 priv->current_ht_config.smps);
887 return active_cnt;
3f3e0376 888 }
c7de35cd
RR		 889}
890
04816448
GE		 891/* up to 4 chains */
892static u8 iwl_count_chain_bitmap(u32 chain_bitmap)
893{
894 u8 res;
895 res = (chain_bitmap & BIT(0)) >> 0;
896 res += (chain_bitmap & BIT(1)) >> 1;
897 res += (chain_bitmap & BIT(2)) >> 2;
9bddbab3 898 res += (chain_bitmap & BIT(3)) >> 3;
04816448
GE		 899 return res;
900}
901
c7de35cd
RR		 902/**
903 * iwl_set_rxon_chain - Set up Rx chain usage in "staging" RXON image
904 *
905 * Selects how many and which Rx receivers/antennas/chains to use.
906 * This should not be used for scan command ... it puts data in wrong place.
907 */
246ed355 908void iwl_set_rxon_chain(struct iwl_priv *priv, struct iwl_rxon_context *ctx)
c7de35cd 909{
28a6b07a
TW		 910 bool is_single = is_single_rx_stream(priv);
911 bool is_cam = !test_bit(STATUS_POWER_PMI, &priv->status);
04816448
GE		 912 u8 idle_rx_cnt, active_rx_cnt, valid_rx_cnt;
913 u32 active_chains;
28a6b07a 914 u16 rx_chain;
c7de35cd
RR		 915
916 /* Tell uCode which antennas are actually connected.
917 * Before first association, we assume all antennas are connected.
918 * Just after first association, iwl_chain_noise_calibration()
919 * checks which antennas actually *are* connected. */
bee008b7 920 if (priv->chain_noise_data.active_chains)
04816448
GE		 921 active_chains = priv->chain_noise_data.active_chains;
922 else
923 active_chains = priv->hw_params.valid_rx_ant;
924
7cb1b088
WYG		 925 if (priv->cfg->bt_params &&
926 priv->cfg->bt_params->advanced_bt_coexist &&
927 (priv->bt_full_concurrent ||
928 priv->bt_traffic_load >= IWL_BT_COEX_TRAFFIC_LOAD_HIGH)) {
da5dbb97
WYG		 929 /*
930 * only use chain 'A' in bt high traffic load or
931 * full concurrency mode
932 */
bee008b7
WYG		 933 active_chains = first_antenna(active_chains);
934 }
935
04816448 936 rx_chain = active_chains << RXON_RX_CHAIN_VALID_POS;
c7de35cd
RR		 937
938 /* How many receivers should we use? */
28a6b07a
TW		 939 active_rx_cnt = iwl_get_active_rx_chain_count(priv);
940 idle_rx_cnt = iwl_get_idle_rx_chain_count(priv, active_rx_cnt);
941
28a6b07a 942
04816448
GE		 943 /* correct rx chain count according hw settings
944 * and chain noise calibration
945 */
946 valid_rx_cnt = iwl_count_chain_bitmap(active_chains);
947 if (valid_rx_cnt < active_rx_cnt)
948 active_rx_cnt = valid_rx_cnt;
949
950 if (valid_rx_cnt < idle_rx_cnt)
951 idle_rx_cnt = valid_rx_cnt;
28a6b07a
TW		 952
953 rx_chain |= active_rx_cnt << RXON_RX_CHAIN_MIMO_CNT_POS;
954 rx_chain |= idle_rx_cnt << RXON_RX_CHAIN_CNT_POS;
955
246ed355 956 ctx->staging.rx_chain = cpu_to_le16(rx_chain);
28a6b07a 957
9e5e6c32 958 if (!is_single && (active_rx_cnt >= IWL_NUM_RX_CHAINS_SINGLE) && is_cam)
246ed355 959 ctx->staging.rx_chain |= RXON_RX_CHAIN_MIMO_FORCE_MSK;
c7de35cd 960 else
246ed355 961 ctx->staging.rx_chain &= ~RXON_RX_CHAIN_MIMO_FORCE_MSK;
c7de35cd 962
e1623446 963 IWL_DEBUG_ASSOC(priv, "rx_chain=0x%X active=%d idle=%d\n",
246ed355 964 ctx->staging.rx_chain,
28a6b07a
TW		 965 active_rx_cnt, idle_rx_cnt);
966
967 WARN_ON(active_rx_cnt == 0 || idle_rx_cnt == 0 ||
968 active_rx_cnt < idle_rx_cnt);
c7de35cd
RR		 969}
970EXPORT_SYMBOL(iwl_set_rxon_chain);
bf85ea4f 971
246ed355 972/* Return valid, unused, channel for a passive scan to reset the RF */
14023641 973u8 iwl_get_single_channel_number(struct iwl_priv *priv,
246ed355 974 enum ieee80211_band band)
14023641
AK		 975{
976 const struct iwl_channel_info *ch_info;
977 int i;
978 u8 channel = 0;
246ed355
JB		 979 u8 min, max;
980 struct iwl_rxon_context *ctx;
14023641 981
14023641 982 if (band == IEEE80211_BAND_5GHZ) {
246ed355
JB		 983 min = 14;
984 max = priv->channel_count;
14023641 985 } else {
246ed355
JB		 986 min = 0;
987 max = 14;
988 }
989
990 for (i = min; i < max; i++) {
991 bool busy = false;
992
993 for_each_context(priv, ctx) {
994 busy = priv->channel_info[i].channel ==
995 le16_to_cpu(ctx->staging.channel);
996 if (busy)
997 break;
14023641 998 }
246ed355
JB		 999
1000 if (busy)
1001 continue;
1002
1003 channel = priv->channel_info[i].channel;
1004 ch_info = iwl_get_channel_info(priv, band, channel);
1005 if (is_channel_valid(ch_info))
1006 break;
14023641
AK		 1007 }
1008
1009 return channel;
1010}
1011EXPORT_SYMBOL(iwl_get_single_channel_number);
1012
bf85ea4f 1013/**
3edb5fd6
SZ		 1014 * iwl_set_rxon_channel - Set the band and channel values in staging RXON
1015 * @ch: requested channel as a pointer to struct ieee80211_channel
bf85ea4f 1016
bf85ea4f 1017 * NOTE: Does not commit to the hardware; it sets appropriate bit fields
3edb5fd6 1018 * in the staging RXON flag structure based on the ch->band
bf85ea4f 1019 */
246ed355
JB		 1020int iwl_set_rxon_channel(struct iwl_priv *priv, struct ieee80211_channel *ch,
1021 struct iwl_rxon_context *ctx)
bf85ea4f 1022{
17e72782 1023 enum ieee80211_band band = ch->band;
81e95430 1024 u16 channel = ch->hw_value;
17e72782 1025
246ed355 1026 if ((le16_to_cpu(ctx->staging.channel) == channel) &&
bf85ea4f
AK		 1027 (priv->band == band))
1028 return 0;
1029
246ed355 1030 ctx->staging.channel = cpu_to_le16(channel);
bf85ea4f 1031 if (band == IEEE80211_BAND_5GHZ)
246ed355 1032 ctx->staging.flags &= ~RXON_FLG_BAND_24G_MSK;
bf85ea4f 1033 else
246ed355 1034 ctx->staging.flags |= RXON_FLG_BAND_24G_MSK;
bf85ea4f
AK		 1035
1036 priv->band = band;
1037
e1623446 1038 IWL_DEBUG_INFO(priv, "Staging channel set to %d [%d]\n", channel, band);
bf85ea4f
AK		 1039
1040 return 0;
1041}
c7de35cd 1042EXPORT_SYMBOL(iwl_set_rxon_channel);
bf85ea4f 1043
79d07325 1044void iwl_set_flags_for_band(struct iwl_priv *priv,
246ed355 1045 struct iwl_rxon_context *ctx,
79d07325
WYG		 1046 enum ieee80211_band band,
1047 struct ieee80211_vif *vif)
8ccde88a
SO		 1048{
1049 if (band == IEEE80211_BAND_5GHZ) {
246ed355 1050 ctx->staging.flags &=
8ccde88a
SO		 1051 ~(RXON_FLG_BAND_24G_MSK | RXON_FLG_AUTO_DETECT_MSK
1052 | RXON_FLG_CCK_MSK);
246ed355 1053 ctx->staging.flags |= RXON_FLG_SHORT_SLOT_MSK;
8ccde88a
SO		 1054 } else {
1055 /* Copied from iwl_post_associate() */
c213d745 1056 if (vif && vif->bss_conf.use_short_slot)
246ed355 1057 ctx->staging.flags |= RXON_FLG_SHORT_SLOT_MSK;
8ccde88a 1058 else
246ed355 1059 ctx->staging.flags &= ~RXON_FLG_SHORT_SLOT_MSK;
8ccde88a 1060
246ed355
JB		 1061 ctx->staging.flags |= RXON_FLG_BAND_24G_MSK;
1062 ctx->staging.flags |= RXON_FLG_AUTO_DETECT_MSK;
1063 ctx->staging.flags &= ~RXON_FLG_CCK_MSK;
8ccde88a
SO		 1064 }
1065}
79d07325 1066EXPORT_SYMBOL(iwl_set_flags_for_band);
8ccde88a
SO		 1067
1068/*
1069 * initialize rxon structure with default values from eeprom
1070 */
1dda6d28 1071void iwl_connection_init_rx_config(struct iwl_priv *priv,
d0fe478c 1072 struct iwl_rxon_context *ctx)
8ccde88a
SO		 1073{
1074 const struct iwl_channel_info *ch_info;
1075
246ed355 1076 memset(&ctx->staging, 0, sizeof(ctx->staging));
8ccde88a 1077
d0fe478c
JB		 1078 if (!ctx->vif) {
1079 ctx->staging.dev_type = ctx->unused_devtype;
1080 } else switch (ctx->vif->type) {
8ccde88a 1081 case NL80211_IFTYPE_AP:
d0fe478c 1082 ctx->staging.dev_type = ctx->ap_devtype;
8ccde88a
SO		 1083 break;
1084
1085 case NL80211_IFTYPE_STATION:
d0fe478c 1086 ctx->staging.dev_type = ctx->station_devtype;
246ed355 1087 ctx->staging.filter_flags = RXON_FILTER_ACCEPT_GRP_MSK;
8ccde88a
SO		 1088 break;
1089
1090 case NL80211_IFTYPE_ADHOC:
d0fe478c 1091 ctx->staging.dev_type = ctx->ibss_devtype;
246ed355
JB		 1092 ctx->staging.flags = RXON_FLG_SHORT_PREAMBLE_MSK;
1093 ctx->staging.filter_flags = RXON_FILTER_BCON_AWARE_MSK |
8ccde88a
SO		 1094 RXON_FILTER_ACCEPT_GRP_MSK;
1095 break;
1096
8ccde88a 1097 default:
d0fe478c
JB		 1098 IWL_ERR(priv, "Unsupported interface type %d\n",
1099 ctx->vif->type);
8ccde88a
SO		 1100 break;
1101 }
1102
1103#if 0
1104 /* TODO: Figure out when short_preamble would be set and cache from
1105 * that */
1106 if (!hw_to_local(priv->hw)->short_preamble)
246ed355 1107 ctx->staging.flags &= ~RXON_FLG_SHORT_PREAMBLE_MSK;
8ccde88a 1108 else
246ed355 1109 ctx->staging.flags |= RXON_FLG_SHORT_PREAMBLE_MSK;
8ccde88a
SO		 1110#endif
1111
1112 ch_info = iwl_get_channel_info(priv, priv->band,
246ed355 1113 le16_to_cpu(ctx->active.channel));
8ccde88a
SO		 1114
1115 if (!ch_info)
1116 ch_info = &priv->channel_info[0];
1117
246ed355 1118 ctx->staging.channel = cpu_to_le16(ch_info->channel);
8ccde88a
SO		 1119 priv->band = ch_info->band;
1120
d0fe478c 1121 iwl_set_flags_for_band(priv, ctx, priv->band, ctx->vif);
8ccde88a 1122
246ed355 1123 ctx->staging.ofdm_basic_rates =
8ccde88a 1124 (IWL_OFDM_RATES_MASK >> IWL_FIRST_OFDM_RATE) & 0xFF;
246ed355 1125 ctx->staging.cck_basic_rates =
8ccde88a
SO		 1126 (IWL_CCK_RATES_MASK >> IWL_FIRST_CCK_RATE) & 0xF;
1127
a2b0f02e 1128 /* clear both MIX and PURE40 mode flag */
246ed355 1129 ctx->staging.flags &= ~(RXON_FLG_CHANNEL_MODE_MIXED |
a2b0f02e 1130 RXON_FLG_CHANNEL_MODE_PURE_40);
d0fe478c
JB		 1131 if (ctx->vif)
1132 memcpy(ctx->staging.node_addr, ctx->vif->addr, ETH_ALEN);
7684c408 1133
246ed355
JB		 1134 ctx->staging.ofdm_ht_single_stream_basic_rates = 0xff;
1135 ctx->staging.ofdm_ht_dual_stream_basic_rates = 0xff;
1136 ctx->staging.ofdm_ht_triple_stream_basic_rates = 0xff;
8ccde88a
SO		 1137}
1138EXPORT_SYMBOL(iwl_connection_init_rx_config);
1139
79d07325 1140void iwl_set_rate(struct iwl_priv *priv)
8ccde88a
SO		 1141{
1142 const struct ieee80211_supported_band *hw = NULL;
1143 struct ieee80211_rate *rate;
246ed355 1144 struct iwl_rxon_context *ctx;
8ccde88a
SO		 1145 int i;
1146
1147 hw = iwl_get_hw_mode(priv, priv->band);
1148 if (!hw) {
1149 IWL_ERR(priv, "Failed to set rate: unable to get hw mode\n");
1150 return;
1151 }
1152
1153 priv->active_rate = 0;
8ccde88a
SO		 1154
1155 for (i = 0; i < hw->n_bitrates; i++) {
1156 rate = &(hw->bitrates[i]);
5027309b 1157 if (rate->hw_value < IWL_RATE_COUNT_LEGACY)
8ccde88a
SO		 1158 priv->active_rate |= (1 << rate->hw_value);
1159 }
1160
4a02886b 1161 IWL_DEBUG_RATE(priv, "Set active_rate = %0x\n", priv->active_rate);
8ccde88a 1162
246ed355
JB		 1163 for_each_context(priv, ctx) {
1164 ctx->staging.cck_basic_rates =
1165 (IWL_CCK_BASIC_RATES_MASK >> IWL_FIRST_CCK_RATE) & 0xF;
4a02886b 1166
246ed355
JB		 1167 ctx->staging.ofdm_basic_rates =
1168 (IWL_OFDM_BASIC_RATES_MASK >> IWL_FIRST_OFDM_RATE) & 0xFF;
1169 }
8ccde88a 1170}
79d07325
WYG		 1171EXPORT_SYMBOL(iwl_set_rate);
1172
1173void iwl_chswitch_done(struct iwl_priv *priv, bool is_success)
1174{
8bd413e6
JB		 1175 /*
1176 * MULTI-FIXME
1177 * See iwl_mac_channel_switch.
1178 */
1179 struct iwl_rxon_context *ctx = &priv->contexts[IWL_RXON_CTX_BSS];
1180
79d07325
WYG		 1181 if (test_bit(STATUS_EXIT_PENDING, &priv->status))
1182 return;
1183
1184 if (priv->switch_rxon.switch_in_progress) {
8bd413e6 1185 ieee80211_chswitch_done(ctx->vif, is_success);
79d07325
WYG		 1186 mutex_lock(&priv->mutex);
1187 priv->switch_rxon.switch_in_progress = false;
1188 mutex_unlock(&priv->mutex);
1189 }
1190}
1191EXPORT_SYMBOL(iwl_chswitch_done);
8ccde88a
SO		 1192
1193void iwl_rx_csa(struct iwl_priv *priv, struct iwl_rx_mem_buffer *rxb)
1194{
2f301227 1195 struct iwl_rx_packet *pkt = rxb_addr(rxb);
8ccde88a 1196 struct iwl_csa_notification *csa = &(pkt->u.csa_notif);
8bd413e6
JB		 1197 /*
1198 * MULTI-FIXME
1199 * See iwl_mac_channel_switch.
1200 */
246ed355 1201 struct iwl_rxon_context *ctx = &priv->contexts[IWL_RXON_CTX_BSS];
246ed355 1202 struct iwl_rxon_cmd *rxon = (void *)&ctx->active;
4a56e965 1203
0924e519
WYG		 1204 if (priv->switch_rxon.switch_in_progress) {
1205 if (!le32_to_cpu(csa->status) &&
1206 (csa->channel == priv->switch_rxon.channel)) {
1207 rxon->channel = csa->channel;
246ed355 1208 ctx->staging.channel = csa->channel;
0924e519
WYG		 1209 IWL_DEBUG_11H(priv, "CSA notif: channel %d\n",
1210 le16_to_cpu(csa->channel));
79d07325
WYG		 1211 iwl_chswitch_done(priv, true);
1212 } else {
0924e519
WYG		 1213 IWL_ERR(priv, "CSA notif (fail) : channel %d\n",
1214 le16_to_cpu(csa->channel));
79d07325
WYG		 1215 iwl_chswitch_done(priv, false);
1216 }
0924e519 1217 }
8ccde88a
SO		 1218}
1219EXPORT_SYMBOL(iwl_rx_csa);
1220
1221#ifdef CONFIG_IWLWIFI_DEBUG
246ed355
JB		 1222void iwl_print_rx_config_cmd(struct iwl_priv *priv,
1223 struct iwl_rxon_context *ctx)
8ccde88a 1224{
246ed355 1225 struct iwl_rxon_cmd *rxon = &ctx->staging;
8ccde88a 1226
e1623446 1227 IWL_DEBUG_RADIO(priv, "RX CONFIG:\n");
3d816c77 1228 iwl_print_hex_dump(priv, IWL_DL_RADIO, (u8 *) rxon, sizeof(*rxon));
e1623446
TW		 1229 IWL_DEBUG_RADIO(priv, "u16 channel: 0x%x\n", le16_to_cpu(rxon->channel));
1230 IWL_DEBUG_RADIO(priv, "u32 flags: 0x%08X\n", le32_to_cpu(rxon->flags));
1231 IWL_DEBUG_RADIO(priv, "u32 filter_flags: 0x%08x\n",
8ccde88a 1232 le32_to_cpu(rxon->filter_flags));
e1623446
TW		 1233 IWL_DEBUG_RADIO(priv, "u8 dev_type: 0x%x\n", rxon->dev_type);
1234 IWL_DEBUG_RADIO(priv, "u8 ofdm_basic_rates: 0x%02x\n",
8ccde88a 1235 rxon->ofdm_basic_rates);
e1623446
TW		 1236 IWL_DEBUG_RADIO(priv, "u8 cck_basic_rates: 0x%02x\n", rxon->cck_basic_rates);
1237 IWL_DEBUG_RADIO(priv, "u8[6] node_addr: %pM\n", rxon->node_addr);
1238 IWL_DEBUG_RADIO(priv, "u8[6] bssid_addr: %pM\n", rxon->bssid_addr);
1239 IWL_DEBUG_RADIO(priv, "u16 assoc_id: 0x%x\n", le16_to_cpu(rxon->assoc_id));
8ccde88a 1240}
a643565e 1241EXPORT_SYMBOL(iwl_print_rx_config_cmd);
6686d17e 1242#endif
8ccde88a
SO		 1243/**
1244 * iwl_irq_handle_error - called for HW or SW error interrupt from card
1245 */
1246void iwl_irq_handle_error(struct iwl_priv *priv)
1247{
1248 /* Set the FW error flag -- cleared on iwl_down */
1249 set_bit(STATUS_FW_ERROR, &priv->status);
1250
1251 /* Cancel currently queued command. */
1252 clear_bit(STATUS_HCMD_ACTIVE, &priv->status);
1253
459bc732
SZ		 1254 IWL_ERR(priv, "Loaded firmware version: %s\n",
1255 priv->hw->wiphy->fw_version);
1256
3a3ff72c 1257 priv->cfg->ops->lib->dump_nic_error_log(priv);
696bdee3
WYG		 1258 if (priv->cfg->ops->lib->dump_csr)
1259 priv->cfg->ops->lib->dump_csr(priv);
1b3eb823
WYG		 1260 if (priv->cfg->ops->lib->dump_fh)
1261 priv->cfg->ops->lib->dump_fh(priv, NULL, false);
b03d7d0f 1262 priv->cfg->ops->lib->dump_nic_event_log(priv, false, NULL, false);
8ccde88a 1263#ifdef CONFIG_IWLWIFI_DEBUG
c341ddb2 1264 if (iwl_get_debug_level(priv) & IWL_DL_FW_ERRORS)
246ed355
JB		 1265 iwl_print_rx_config_cmd(priv,
1266 &priv->contexts[IWL_RXON_CTX_BSS]);
8ccde88a
SO		 1267#endif
1268
1269 wake_up_interruptible(&priv->wait_command_queue);
1270
1271 /* Keep the restart process from trying to send host
1272 * commands by clearing the INIT status bit */
1273 clear_bit(STATUS_READY, &priv->status);
1274
1275 if (!test_bit(STATUS_EXIT_PENDING, &priv->status)) {
e1623446 1276 IWL_DEBUG(priv, IWL_DL_FW_ERRORS,
8ccde88a
SO		 1277 "Restarting adapter due to uCode error.\n");
1278
8ccde88a
SO		 1279 if (priv->cfg->mod_params->restart_fw)
1280 queue_work(priv->workqueue, &priv->restart);
1281 }
1282}
1283EXPORT_SYMBOL(iwl_irq_handle_error);
1284
f8e200de 1285static int iwl_apm_stop_master(struct iwl_priv *priv)
d68b603c 1286{
5220af0c 1287 int ret = 0;
d68b603c 1288
5220af0c 1289 /* stop device's busmaster DMA activity */
d68b603c
AK		 1290 iwl_set_bit(priv, CSR_RESET, CSR_RESET_REG_FLAG_STOP_MASTER);
1291
5220af0c 1292 ret = iwl_poll_bit(priv, CSR_RESET, CSR_RESET_REG_FLAG_MASTER_DISABLED,
d68b603c 1293 CSR_RESET_REG_FLAG_MASTER_DISABLED, 100);
5220af0c
BC		 1294 if (ret)
1295 IWL_WARN(priv, "Master Disable Timed Out, 100 usec\n");
d68b603c 1296
d68b603c
AK		 1297 IWL_DEBUG_INFO(priv, "stop master\n");
1298
5220af0c 1299 return ret;
d68b603c 1300}
d68b603c
AK		 1301
1302void iwl_apm_stop(struct iwl_priv *priv)
1303{
fadb3582
BC		 1304 IWL_DEBUG_INFO(priv, "Stop card, put in low power state\n");
1305
5220af0c 1306 /* Stop device's DMA activity */
d68b603c
AK		 1307 iwl_apm_stop_master(priv);
1308
5220af0c 1309 /* Reset the entire device */
d68b603c
AK		 1310 iwl_set_bit(priv, CSR_RESET, CSR_RESET_REG_FLAG_SW_RESET);
1311
1312 udelay(10);
5220af0c
BC		 1313
1314 /*
1315 * Clear "initialization complete" bit to move adapter from
1316 * D0A* (powered-up Active) --> D0U* (Uninitialized) state.
1317 */
d68b603c 1318 iwl_clear_bit(priv, CSR_GP_CNTRL, CSR_GP_CNTRL_REG_FLAG_INIT_DONE);
d68b603c
AK		 1319}
1320EXPORT_SYMBOL(iwl_apm_stop);
1321
fadb3582
BC		 1322
1323/*
1324 * Start up NIC's basic functionality after it has been reset
1325 * (e.g. after platform boot, or shutdown via iwl_apm_stop())
1326 * NOTE: This does not load uCode nor start the embedded processor
1327 */
1328int iwl_apm_init(struct iwl_priv *priv)
1329{
1330 int ret = 0;
1331 u16 lctl;
1332
1333 IWL_DEBUG_INFO(priv, "Init card's basic functions\n");
1334
1335 /*
1336 * Use "set_bit" below rather than "write", to preserve any hardware
1337 * bits already set by default after reset.
1338 */
1339
1340 /* Disable L0S exit timer (platform NMI Work/Around) */
1341 iwl_set_bit(priv, CSR_GIO_CHICKEN_BITS,
1342 CSR_GIO_CHICKEN_BITS_REG_BIT_DIS_L0S_EXIT_TIMER);
1343
1344 /*
1345 * Disable L0s without affecting L1;
1346 * don't wait for ICH L0s (ICH bug W/A)
1347 */
1348 iwl_set_bit(priv, CSR_GIO_CHICKEN_BITS,
1349 CSR_GIO_CHICKEN_BITS_REG_BIT_L1A_NO_L0S_RX);
1350
1351 /* Set FH wait threshold to maximum (HW error during stress W/A) */
1352 iwl_set_bit(priv, CSR_DBG_HPET_MEM_REG, CSR_DBG_HPET_MEM_REG_VAL);
1353
1354 /*
1355 * Enable HAP INTA (interrupt from management bus) to
1356 * wake device's PCI Express link L1a -> L0s
1357 * NOTE: This is no-op for 3945 (non-existant bit)
1358 */
1359 iwl_set_bit(priv, CSR_HW_IF_CONFIG_REG,
1360 CSR_HW_IF_CONFIG_REG_BIT_HAP_WAKE_L1A);
1361
1362 /*
a6c5c731
BC		 1363 * HW bug W/A for instability in PCIe bus L0->L0S->L1 transition.
1364 * Check if BIOS (or OS) enabled L1-ASPM on this device.
1365 * If so (likely), disable L0S, so device moves directly L0->L1;
1366 * costs negligible amount of power savings.
1367 * If not (unlikely), enable L0S, so there is at least some
1368 * power savings, even without L1.
fadb3582 1369 */
7cb1b088 1370 if (priv->cfg->base_params->set_l0s) {
fadb3582
BC		 1371 lctl = iwl_pcie_link_ctl(priv);
1372 if ((lctl & PCI_CFG_LINK_CTRL_VAL_L1_EN) ==
1373 PCI_CFG_LINK_CTRL_VAL_L1_EN) {
1374 /* L1-ASPM enabled; disable(!) L0S */
1375 iwl_set_bit(priv, CSR_GIO_REG,
1376 CSR_GIO_REG_VAL_L0S_ENABLED);
1377 IWL_DEBUG_POWER(priv, "L1 Enabled; Disabling L0S\n");
1378 } else {
1379 /* L1-ASPM disabled; enable(!) L0S */
1380 iwl_clear_bit(priv, CSR_GIO_REG,
1381 CSR_GIO_REG_VAL_L0S_ENABLED);
1382 IWL_DEBUG_POWER(priv, "L1 Disabled; Enabling L0S\n");
1383 }
1384 }
1385
1386 /* Configure analog phase-lock-loop before activating to D0A */
7cb1b088
WYG		 1387 if (priv->cfg->base_params->pll_cfg_val)
1388 iwl_set_bit(priv, CSR_ANA_PLL_CFG,
1389 priv->cfg->base_params->pll_cfg_val);
fadb3582
BC		 1390
1391 /*
1392 * Set "initialization complete" bit to move adapter from
1393 * D0U* --> D0A* (powered-up active) state.
1394 */
1395 iwl_set_bit(priv, CSR_GP_CNTRL, CSR_GP_CNTRL_REG_FLAG_INIT_DONE);
1396
1397 /*
1398 * Wait for clock stabilization; once stabilized, access to
1399 * device-internal resources is supported, e.g. iwl_write_prph()
1400 * and accesses to uCode SRAM.
1401 */
1402 ret = iwl_poll_bit(priv, CSR_GP_CNTRL,
1403 CSR_GP_CNTRL_REG_FLAG_MAC_CLOCK_READY,
1404 CSR_GP_CNTRL_REG_FLAG_MAC_CLOCK_READY, 25000);
1405 if (ret < 0) {
1406 IWL_DEBUG_INFO(priv, "Failed to init the card\n");
1407 goto out;
1408 }
1409
1410 /*
1411 * Enable DMA and BSM (if used) clocks, wait for them to stabilize.
1412 * BSM (Boostrap State Machine) is only in 3945 and 4965;
1413 * later devices (i.e. 5000 and later) have non-volatile SRAM,
1414 * and don't need BSM to restore data after power-saving sleep.
1415 *
1416 * Write to "CLK_EN_REG"; "1" bits enable clocks, while "0" bits
1417 * do not disable clocks. This preserves any hardware bits already
1418 * set by default in "CLK_CTRL_REG" after reset.
1419 */
7cb1b088 1420 if (priv->cfg->base_params->use_bsm)
fadb3582
BC		 1421 iwl_write_prph(priv, APMG_CLK_EN_REG,
1422 APMG_CLK_VAL_DMA_CLK_RQT | APMG_CLK_VAL_BSM_CLK_RQT);
1423 else
1424 iwl_write_prph(priv, APMG_CLK_EN_REG,
1425 APMG_CLK_VAL_DMA_CLK_RQT);
1426 udelay(20);
1427
1428 /* Disable L1-Active */
1429 iwl_set_bits_prph(priv, APMG_PCIDEV_STT_REG,
1430 APMG_PCIDEV_STT_VAL_L1_ACT_DIS);
1431
1432out:
1433 return ret;
1434}
1435EXPORT_SYMBOL(iwl_apm_init);
1436
1437
630fe9b6
TW		 1438int iwl_set_tx_power(struct iwl_priv *priv, s8 tx_power, bool force)
1439{
1440 int ret = 0;
5eadd94b
WYG		 1441 s8 prev_tx_power = priv->tx_power_user_lmt;
1442
b744cb79
WYG		 1443 if (tx_power < IWLAGN_TX_POWER_TARGET_POWER_MIN) {
1444 IWL_WARN(priv,
1445 "Requested user TXPOWER %d below lower limit %d.\n",
daf518de 1446 tx_power,
b744cb79 1447 IWLAGN_TX_POWER_TARGET_POWER_MIN);
630fe9b6
TW		 1448 return -EINVAL;
1449 }
1450
dc1b0973 1451 if (tx_power > priv->tx_power_device_lmt) {
08f2d58d
WYG		 1452 IWL_WARN(priv,
1453 "Requested user TXPOWER %d above upper limit %d.\n",
dc1b0973 1454 tx_power, priv->tx_power_device_lmt);
630fe9b6
TW		 1455 return -EINVAL;
1456 }
1457
1458 if (priv->tx_power_user_lmt != tx_power)
1459 force = true;
1460
019fb97d 1461 /* if nic is not up don't send command */
5eadd94b
WYG		 1462 if (iwl_is_ready_rf(priv)) {
1463 priv->tx_power_user_lmt = tx_power;
1464 if (force && priv->cfg->ops->lib->send_tx_power)
1465 ret = priv->cfg->ops->lib->send_tx_power(priv);
1466 else if (!priv->cfg->ops->lib->send_tx_power)
1467 ret = -EOPNOTSUPP;
1468 /*
1469 * if fail to set tx_power, restore the orig. tx power
1470 */
1471 if (ret)
1472 priv->tx_power_user_lmt = prev_tx_power;
1473 }
630fe9b6 1474
5eadd94b
WYG		 1475 /*
1476 * Even this is an async host command, the command
1477 * will always report success from uCode
1478 * So once driver can placing the command into the queue
1479 * successfully, driver can use priv->tx_power_user_lmt
1480 * to reflect the current tx power
1481 */
630fe9b6
TW		 1482 return ret;
1483}
1484EXPORT_SYMBOL(iwl_set_tx_power);
1485
ef850d7c 1486irqreturn_t iwl_isr_legacy(int irq, void *data)
f17d08a6
AK		 1487{
1488 struct iwl_priv *priv = data;
1489 u32 inta, inta_mask;
1490 u32 inta_fh;
6e8cc38d 1491 unsigned long flags;
f17d08a6
AK		 1492 if (!priv)
1493 return IRQ_NONE;
1494
6e8cc38d 1495 spin_lock_irqsave(&priv->lock, flags);
f17d08a6
AK		 1496
1497 /* Disable (but don't clear!) interrupts here to avoid
1498 * back-to-back ISRs and sporadic interrupts from our NIC.
1499 * If we have something to service, the tasklet will re-enable ints.
1500 * If we *don't* have something, we'll re-enable before leaving here. */
1501 inta_mask = iwl_read32(priv, CSR_INT_MASK); /* just for debug */
1502 iwl_write32(priv, CSR_INT_MASK, 0x00000000);
1503
1504 /* Discover which interrupts are active/pending */
1505 inta = iwl_read32(priv, CSR_INT);
1506 inta_fh = iwl_read32(priv, CSR_FH_INT_STATUS);
1507
1508 /* Ignore interrupt if there's nothing in NIC to service.
1509 * This may be due to IRQ shared with another device,
1510 * or due to sporadic interrupts thrown from our NIC. */
1511 if (!inta && !inta_fh) {
1512 IWL_DEBUG_ISR(priv, "Ignore interrupt, inta == 0, inta_fh == 0\n");
1513 goto none;
1514 }
1515
1516 if ((inta == 0xFFFFFFFF) || ((inta & 0xFFFFFFF0) == 0xa5a5a5a0)) {
1517 /* Hardware disappeared. It might have already raised
1518 * an interrupt */
1519 IWL_WARN(priv, "HARDWARE GONE?? INTA == 0x%08x\n", inta);
1520 goto unplugged;
1521 }
1522
1523 IWL_DEBUG_ISR(priv, "ISR inta 0x%08x, enabled 0x%08x, fh 0x%08x\n",
1524 inta, inta_mask, inta_fh);
1525
1526 inta &= ~CSR_INT_BIT_SCD;
1527
1528 /* iwl_irq_tasklet() will service interrupts and re-enable them */
1529 if (likely(inta || inta_fh))
1530 tasklet_schedule(&priv->irq_tasklet);
1531
1532 unplugged:
6e8cc38d 1533 spin_unlock_irqrestore(&priv->lock, flags);
f17d08a6
AK		 1534 return IRQ_HANDLED;
1535
1536 none:
1537 /* re-enable interrupts here since we don't have anything to service. */
1538 /* only Re-enable if diabled by irq */
1539 if (test_bit(STATUS_INT_ENABLED, &priv->status))
1540 iwl_enable_interrupts(priv);
6e8cc38d 1541 spin_unlock_irqrestore(&priv->lock, flags);
f17d08a6
AK		 1542 return IRQ_NONE;
1543}
ef850d7c 1544EXPORT_SYMBOL(iwl_isr_legacy);
f17d08a6 1545
65b52bde 1546void iwl_send_bt_config(struct iwl_priv *priv)
17f841cd
SO		 1547{
1548 struct iwl_bt_cmd bt_cmd = {
456d0f76
WYG		 1549 .lead_time = BT_LEAD_TIME_DEF,
1550 .max_kill = BT_MAX_KILL_DEF,
17f841cd
SO		 1551 .kill_ack_mask = 0,
1552 .kill_cts_mask = 0,
1553 };
1554
06702a73
WYG		 1555 if (!bt_coex_active)
1556 bt_cmd.flags = BT_COEX_DISABLE;
1557 else
1558 bt_cmd.flags = BT_COEX_ENABLE;
1559
1560 IWL_DEBUG_INFO(priv, "BT coex %s\n",
1561 (bt_cmd.flags == BT_COEX_DISABLE) ? "disable" : "active");
1562
65b52bde
JB		 1563 if (iwl_send_cmd_pdu(priv, REPLY_BT_CONFIG,
1564 sizeof(struct iwl_bt_cmd), &bt_cmd))
1565 IWL_ERR(priv, "failed to send BT Coex Config\n");
17f841cd
SO		 1566}
1567EXPORT_SYMBOL(iwl_send_bt_config);
1568
ef8d5529 1569int iwl_send_statistics_request(struct iwl_priv *priv, u8 flags, bool clear)
49ea8596 1570{
ef8d5529
WYG		 1571 struct iwl_statistics_cmd statistics_cmd = {
1572 .configuration_flags =
1573 clear ? IWL_STATS_CONF_CLEAR_STATS : 0,
49ea8596 1574 };
ef8d5529
WYG		 1575
1576 if (flags & CMD_ASYNC)
1577 return iwl_send_cmd_pdu_async(priv, REPLY_STATISTICS_CMD,
1578 sizeof(struct iwl_statistics_cmd),
1579 &statistics_cmd, NULL);
1580 else
1581 return iwl_send_cmd_pdu(priv, REPLY_STATISTICS_CMD,
1582 sizeof(struct iwl_statistics_cmd),
1583 &statistics_cmd);
49ea8596
EG		 1584}
1585EXPORT_SYMBOL(iwl_send_statistics_request);
7e8c519e 1586
030f05ed
AK		 1587void iwl_rx_pm_sleep_notif(struct iwl_priv *priv,
1588 struct iwl_rx_mem_buffer *rxb)
1589{
1590#ifdef CONFIG_IWLWIFI_DEBUG
2f301227 1591 struct iwl_rx_packet *pkt = rxb_addr(rxb);
030f05ed
AK		 1592 struct iwl_sleep_notification *sleep = &(pkt->u.sleep_notif);
1593 IWL_DEBUG_RX(priv, "sleep mode: %d, src: %d\n",
1594 sleep->pm_sleep_mode, sleep->pm_wakeup_src);
1595#endif
1596}
1597EXPORT_SYMBOL(iwl_rx_pm_sleep_notif);
1598
1599void iwl_rx_pm_debug_statistics_notif(struct iwl_priv *priv,
1600 struct iwl_rx_mem_buffer *rxb)
1601{
2f301227 1602 struct iwl_rx_packet *pkt = rxb_addr(rxb);
396887a2 1603 u32 len = le32_to_cpu(pkt->len_n_flags) & FH_RSCSR_FRAME_SIZE_MSK;
030f05ed 1604 IWL_DEBUG_RADIO(priv, "Dumping %d bytes of unhandled "
396887a2
DH		 1605 "notification for %s:\n", len,
1606 get_cmd_string(pkt->hdr.cmd));
1607 iwl_print_hex_dump(priv, IWL_DL_RADIO, pkt->u.raw, len);
030f05ed
AK		 1608}
1609EXPORT_SYMBOL(iwl_rx_pm_debug_statistics_notif);
261b9c33
AK		 1610
1611void iwl_rx_reply_error(struct iwl_priv *priv,
1612 struct iwl_rx_mem_buffer *rxb)
1613{
2f301227 1614 struct iwl_rx_packet *pkt = rxb_addr(rxb);
261b9c33
AK		 1615
1616 IWL_ERR(priv, "Error Reply type 0x%08X cmd %s (0x%02X) "
1617 "seq 0x%04X ser 0x%08X\n",
1618 le32_to_cpu(pkt->u.err_resp.error_type),
1619 get_cmd_string(pkt->u.err_resp.cmd_id),
1620 pkt->u.err_resp.cmd_id,
1621 le16_to_cpu(pkt->u.err_resp.bad_cmd_seq_num),
1622 le32_to_cpu(pkt->u.err_resp.error_info));
1623}
1624EXPORT_SYMBOL(iwl_rx_reply_error);
1625
a83b9141
WYG		 1626void iwl_clear_isr_stats(struct iwl_priv *priv)
1627{
1628 memset(&priv->isr_stats, 0, sizeof(priv->isr_stats));
1629}
a83b9141 1630
488829f1
AK		 1631int iwl_mac_conf_tx(struct ieee80211_hw *hw, u16 queue,
1632 const struct ieee80211_tx_queue_params *params)
1633{
1634 struct iwl_priv *priv = hw->priv;
8dfdb9d5 1635 struct iwl_rxon_context *ctx;
488829f1
AK		 1636 unsigned long flags;
1637 int q;
1638
1639 IWL_DEBUG_MAC80211(priv, "enter\n");
1640
1641 if (!iwl_is_ready_rf(priv)) {
1642 IWL_DEBUG_MAC80211(priv, "leave - RF not ready\n");
1643 return -EIO;
1644 }
1645
1646 if (queue >= AC_NUM) {
1647 IWL_DEBUG_MAC80211(priv, "leave - queue >= AC_NUM %d\n", queue);
1648 return 0;
1649 }
1650
1651 q = AC_NUM - 1 - queue;
1652
1653 spin_lock_irqsave(&priv->lock, flags);
1654
8dfdb9d5
JB		 1655 /*
1656 * MULTI-FIXME
1657 * This may need to be done per interface in nl80211/cfg80211/mac80211.
1658 */
1659 for_each_context(priv, ctx) {
1660 ctx->qos_data.def_qos_parm.ac[q].cw_min =
1661 cpu_to_le16(params->cw_min);
1662 ctx->qos_data.def_qos_parm.ac[q].cw_max =
1663 cpu_to_le16(params->cw_max);
1664 ctx->qos_data.def_qos_parm.ac[q].aifsn = params->aifs;
1665 ctx->qos_data.def_qos_parm.ac[q].edca_txop =
1666 cpu_to_le16((params->txop * 32));
1667
1668 ctx->qos_data.def_qos_parm.ac[q].reserved1 = 0;
1669 }
488829f1
AK		 1670
1671 spin_unlock_irqrestore(&priv->lock, flags);
1672
1673 IWL_DEBUG_MAC80211(priv, "leave\n");
1674 return 0;
1675}
1676EXPORT_SYMBOL(iwl_mac_conf_tx);
5bbe233b 1677
a85d7cca
JB		 1678int iwl_mac_tx_last_beacon(struct ieee80211_hw *hw)
1679{
1680 struct iwl_priv *priv = hw->priv;
1681
1682 return priv->ibss_manager == IWL_IBSS_MANAGER;
1683}
1684EXPORT_SYMBOL_GPL(iwl_mac_tx_last_beacon);
1685
5bbe233b 1686static void iwl_ht_conf(struct iwl_priv *priv,
ca3c1f59 1687 struct ieee80211_vif *vif)
5bbe233b 1688{
fad95bf5 1689 struct iwl_ht_config *ht_conf = &priv->current_ht_config;
5bbe233b 1690 struct ieee80211_sta *sta;
ca3c1f59 1691 struct ieee80211_bss_conf *bss_conf = &vif->bss_conf;
7e6a5886 1692 struct iwl_rxon_context *ctx = iwl_rxon_ctx_from_vif(vif);
5bbe233b 1693
91dd6c27 1694 IWL_DEBUG_MAC80211(priv, "enter:\n");
5bbe233b 1695
7e6a5886 1696 if (!ctx->ht.enabled)
5bbe233b
AK		 1697 return;
1698
7e6a5886 1699 ctx->ht.protection =
9ed6bcce 1700 bss_conf->ht_operation_mode & IEEE80211_HT_OP_MODE_PROTECTION;
7e6a5886 1701 ctx->ht.non_gf_sta_present =
9ed6bcce 1702 !!(bss_conf->ht_operation_mode & IEEE80211_HT_OP_MODE_NON_GF_STA_PRSNT);
5bbe233b 1703
02bb1bea
JB		 1704 ht_conf->single_chain_sufficient = false;
1705
ca3c1f59 1706 switch (vif->type) {
02bb1bea
JB		 1707 case NL80211_IFTYPE_STATION:
1708 rcu_read_lock();
ca3c1f59 1709 sta = ieee80211_find_sta(vif, bss_conf->bssid);
02bb1bea
JB		 1710 if (sta) {
1711 struct ieee80211_sta_ht_cap *ht_cap = &sta->ht_cap;
1712 int maxstreams;
1713
1714 maxstreams = (ht_cap->mcs.tx_params &
1715 IEEE80211_HT_MCS_TX_MAX_STREAMS_MASK)
1716 >> IEEE80211_HT_MCS_TX_MAX_STREAMS_SHIFT;
1717 maxstreams += 1;
1718
1719 if ((ht_cap->mcs.rx_mask[1] == 0) &&
1720 (ht_cap->mcs.rx_mask[2] == 0))
1721 ht_conf->single_chain_sufficient = true;
1722 if (maxstreams <= 1)
1723 ht_conf->single_chain_sufficient = true;
1724 } else {
1725 /*
1726 * If at all, this can only happen through a race
1727 * when the AP disconnects us while we're still
1728 * setting up the connection, in that case mac80211
1729 * will soon tell us about that.
1730 */
1731 ht_conf->single_chain_sufficient = true;
1732 }
1733 rcu_read_unlock();
1734 break;
1735 case NL80211_IFTYPE_ADHOC:
1736 ht_conf->single_chain_sufficient = true;
1737 break;
1738 default:
1739 break;
1740 }
5bbe233b
AK		 1741
1742 IWL_DEBUG_MAC80211(priv, "leave\n");
1743}
1744
246ed355
JB		 1745static inline void iwl_set_no_assoc(struct iwl_priv *priv,
1746 struct ieee80211_vif *vif)
c91c3efc 1747{
246ed355
JB		 1748 struct iwl_rxon_context *ctx = iwl_rxon_ctx_from_vif(vif);
1749
c91c3efc
AK		 1750 iwl_led_disassociate(priv);
1751 /*
1752 * inform the ucode that there is no longer an
1753 * association and that no more packets should be
1754 * sent
1755 */
246ed355
JB		 1756 ctx->staging.filter_flags &= ~RXON_FILTER_ASSOC_MSK;
1757 ctx->staging.assoc_id = 0;
1758 iwlcore_commit_rxon(priv, ctx);
c91c3efc
AK		 1759}
1760
0bc5774f
JB		 1761static int iwl_mac_beacon_update(struct ieee80211_hw *hw, struct sk_buff *skb)
1762{
1763 struct iwl_priv *priv = hw->priv;
1764 unsigned long flags;
1765 __le64 timestamp;
1766
1767 IWL_DEBUG_MAC80211(priv, "enter\n");
1768
76d04815
JB		 1769 lockdep_assert_held(&priv->mutex);
1770
1771 if (!priv->beacon_ctx) {
1772 IWL_ERR(priv, "update beacon but no beacon context!\n");
1773 dev_kfree_skb(skb);
1774 return -EINVAL;
1775 }
1776
0bc5774f
JB		 1777 if (!iwl_is_ready_rf(priv)) {
1778 IWL_DEBUG_MAC80211(priv, "leave - RF not ready\n");
1779 return -EIO;
1780 }
1781
1782 spin_lock_irqsave(&priv->lock, flags);
1783
1784 if (priv->ibss_beacon)
1785 dev_kfree_skb(priv->ibss_beacon);
1786
1787 priv->ibss_beacon = skb;
1788
1789 timestamp = ((struct ieee80211_mgmt *)skb->data)->u.beacon.timestamp;
1790 priv->timestamp = le64_to_cpu(timestamp);
1791
1792 IWL_DEBUG_MAC80211(priv, "leave\n");
1793 spin_unlock_irqrestore(&priv->lock, flags);
1794
76d04815 1795 priv->cfg->ops->lib->post_associate(priv, priv->beacon_ctx->vif);
0bc5774f
JB		 1796
1797 return 0;
1798}
1799
5bbe233b 1800void iwl_bss_info_changed(struct ieee80211_hw *hw,
2d0ddec5
JB		 1801 struct ieee80211_vif *vif,
1802 struct ieee80211_bss_conf *bss_conf,
1803 u32 changes)
5bbe233b
AK		 1804{
1805 struct iwl_priv *priv = hw->priv;
246ed355 1806 struct iwl_rxon_context *ctx = iwl_rxon_ctx_from_vif(vif);
3a650292 1807 int ret;
5bbe233b
AK		 1808
1809 IWL_DEBUG_MAC80211(priv, "changes = 0x%X\n", changes);
1810
2d0ddec5
JB		 1811 if (!iwl_is_alive(priv))
1812 return;
1813
1814 mutex_lock(&priv->mutex);
1815
4ced3f74
JB		 1816 if (changes & BSS_CHANGED_QOS) {
1817 unsigned long flags;
1818
1819 spin_lock_irqsave(&priv->lock, flags);
8dfdb9d5
JB		 1820 ctx->qos_data.qos_active = bss_conf->qos;
1821 iwl_update_qos(priv, ctx);
4ced3f74
JB		 1822 spin_unlock_irqrestore(&priv->lock, flags);
1823 }
1824
76d04815
JB		 1825 if (changes & BSS_CHANGED_BEACON_ENABLED) {
1826 /*
1827 * the add_interface code must make sure we only ever
1828 * have a single interface that could be beaconing at
1829 * any time.
1830 */
1831 if (vif->bss_conf.enable_beacon)
1832 priv->beacon_ctx = ctx;
1833 else
1834 priv->beacon_ctx = NULL;
1835 }
1836
92445c95 1837 if (changes & BSS_CHANGED_BEACON && vif->type == NL80211_IFTYPE_AP) {
2d0ddec5
JB		 1838 dev_kfree_skb(priv->ibss_beacon);
1839 priv->ibss_beacon = ieee80211_beacon_get(hw, vif);
1840 }
1841
2a3aeb44
JB		 1842 if (changes & BSS_CHANGED_BEACON_INT && vif->type == NL80211_IFTYPE_AP)
1843 iwl_send_rxon_timing(priv, ctx);
d7129e19
JB		 1844
1845 if (changes & BSS_CHANGED_BSSID) {
1846 IWL_DEBUG_MAC80211(priv, "BSSID %pM\n", bss_conf->bssid);
1847
1848 /*
1849 * If there is currently a HW scan going on in the
1850 * background then we need to cancel it else the RXON
1851 * below/in post_associate will fail.
1852 */
2d0ddec5 1853 if (iwl_scan_cancel_timeout(priv, 100)) {
d7129e19 1854 IWL_WARN(priv, "Aborted scan still in progress after 100ms\n");
2d0ddec5
JB		 1855 IWL_DEBUG_MAC80211(priv, "leaving - scan abort failed.\n");
1856 mutex_unlock(&priv->mutex);
1857 return;
1858 }
2d0ddec5 1859
d7129e19 1860 /* mac80211 only sets assoc when in STATION mode */
92445c95 1861 if (vif->type == NL80211_IFTYPE_ADHOC || bss_conf->assoc) {
246ed355 1862 memcpy(ctx->staging.bssid_addr,
d7129e19 1863 bss_conf->bssid, ETH_ALEN);
2d0ddec5 1864
d7129e19
JB		 1865 /* currently needed in a few places */
1866 memcpy(priv->bssid, bss_conf->bssid, ETH_ALEN);
1867 } else {
246ed355 1868 ctx->staging.filter_flags &=
d7129e19 1869 ~RXON_FILTER_ASSOC_MSK;
2d0ddec5 1870 }
d7129e19 1871
2d0ddec5
JB		 1872 }
1873
d7129e19
JB		 1874 /*
1875 * This needs to be after setting the BSSID in case
1876 * mac80211 decides to do both changes at once because
1877 * it will invoke post_associate.
1878 */
92445c95 1879 if (vif->type == NL80211_IFTYPE_ADHOC &&
2d0ddec5
JB		 1880 changes & BSS_CHANGED_BEACON) {
1881 struct sk_buff *beacon = ieee80211_beacon_get(hw, vif);
1882
1883 if (beacon)
1884 iwl_mac_beacon_update(hw, beacon);
1885 }
1886
5bbe233b
AK		 1887 if (changes & BSS_CHANGED_ERP_PREAMBLE) {
1888 IWL_DEBUG_MAC80211(priv, "ERP_PREAMBLE %d\n",
1889 bss_conf->use_short_preamble);
1890 if (bss_conf->use_short_preamble)
246ed355 1891 ctx->staging.flags |= RXON_FLG_SHORT_PREAMBLE_MSK;
5bbe233b 1892 else
246ed355 1893 ctx->staging.flags &= ~RXON_FLG_SHORT_PREAMBLE_MSK;
5bbe233b
AK		 1894 }
1895
1896 if (changes & BSS_CHANGED_ERP_CTS_PROT) {
1897 IWL_DEBUG_MAC80211(priv, "ERP_CTS %d\n", bss_conf->use_cts_prot);
1898 if (bss_conf->use_cts_prot && (priv->band != IEEE80211_BAND_5GHZ))
246ed355 1899 ctx->staging.flags |= RXON_FLG_TGG_PROTECT_MSK;
5bbe233b 1900 else
246ed355 1901 ctx->staging.flags &= ~RXON_FLG_TGG_PROTECT_MSK;
94597ab2 1902 if (bss_conf->use_cts_prot)
246ed355 1903 ctx->staging.flags |= RXON_FLG_SELF_CTS_EN;
94597ab2 1904 else
246ed355 1905 ctx->staging.flags &= ~RXON_FLG_SELF_CTS_EN;
5bbe233b
AK		 1906 }
1907
d7129e19
JB		 1908 if (changes & BSS_CHANGED_BASIC_RATES) {
1909 /* XXX use this information
1910 *
1911 * To do that, remove code from iwl_set_rate() and put something
1912 * like this here:
1913 *
1914 if (A-band)
246ed355 1915 ctx->staging.ofdm_basic_rates =
d7129e19
JB		 1916 bss_conf->basic_rates;
1917 else
246ed355 1918 ctx->staging.ofdm_basic_rates =
d7129e19 1919 bss_conf->basic_rates >> 4;
246ed355 1920 ctx->staging.cck_basic_rates =
d7129e19
JB		 1921 bss_conf->basic_rates & 0xF;
1922 */
1923 }
1924
5bbe233b 1925 if (changes & BSS_CHANGED_HT) {
ca3c1f59 1926 iwl_ht_conf(priv, vif);
45823531
AK		 1927
1928 if (priv->cfg->ops->hcmd->set_rxon_chain)
246ed355 1929 priv->cfg->ops->hcmd->set_rxon_chain(priv, ctx);
5bbe233b
AK		 1930 }
1931
1932 if (changes & BSS_CHANGED_ASSOC) {
1933 IWL_DEBUG_MAC80211(priv, "ASSOC %d\n", bss_conf->assoc);
5bbe233b 1934 if (bss_conf->assoc) {
5bbe233b 1935 priv->timestamp = bss_conf->timestamp;
5bbe233b 1936
e932a609
JB		 1937 iwl_led_associate(priv);
1938
d7129e19 1939 if (!iwl_is_rfkill(priv))
1dda6d28 1940 priv->cfg->ops->lib->post_associate(priv, vif);
c91c3efc 1941 } else
246ed355 1942 iwl_set_no_assoc(priv, vif);
d7129e19
JB		 1943 }
1944
246ed355 1945 if (changes && iwl_is_associated_ctx(ctx) && bss_conf->aid) {
d7129e19
JB		 1946 IWL_DEBUG_MAC80211(priv, "Changes (%#x) while associated\n",
1947 changes);
246ed355 1948 ret = iwl_send_rxon_assoc(priv, ctx);
d7129e19
JB		 1949 if (!ret) {
1950 /* Sync active_rxon with latest change. */
246ed355
JB		 1951 memcpy((void *)&ctx->active,
1952 &ctx->staging,
d7129e19 1953 sizeof(struct iwl_rxon_cmd));
5bbe233b 1954 }
5bbe233b 1955 }
d7129e19 1956
c91c3efc
AK		 1957 if (changes & BSS_CHANGED_BEACON_ENABLED) {
1958 if (vif->bss_conf.enable_beacon) {
246ed355 1959 memcpy(ctx->staging.bssid_addr,
c91c3efc
AK		 1960 bss_conf->bssid, ETH_ALEN);
1961 memcpy(priv->bssid, bss_conf->bssid, ETH_ALEN);
1dda6d28 1962 iwlcore_config_ap(priv, vif);
c91c3efc 1963 } else
246ed355 1964 iwl_set_no_assoc(priv, vif);
f513dfff
DH		 1965 }
1966
1fa61b2e
JB		 1967 if (changes & BSS_CHANGED_IBSS) {
1968 ret = priv->cfg->ops->lib->manage_ibss_station(priv, vif,
1969 bss_conf->ibss_joined);
1970 if (ret)
1971 IWL_ERR(priv, "failed to %s IBSS station %pM\n",
1972 bss_conf->ibss_joined ? "add" : "remove",
1973 bss_conf->bssid);
1974 }
1975
52a02d15
JB		 1976 if (changes & BSS_CHANGED_IDLE &&
1977 priv->cfg->ops->hcmd->set_pan_params) {
1978 if (priv->cfg->ops->hcmd->set_pan_params(priv))
1979 IWL_ERR(priv, "failed to update PAN params\n");
1980 }
1981
d7129e19
JB		 1982 mutex_unlock(&priv->mutex);
1983
2d0ddec5 1984 IWL_DEBUG_MAC80211(priv, "leave\n");
5bbe233b
AK		 1985}
1986EXPORT_SYMBOL(iwl_bss_info_changed);
1987
b55e75ed 1988static int iwl_set_mode(struct iwl_priv *priv, struct ieee80211_vif *vif)
727882d6 1989{
246ed355
JB		 1990 struct iwl_rxon_context *ctx = iwl_rxon_ctx_from_vif(vif);
1991
d0fe478c 1992 iwl_connection_init_rx_config(priv, ctx);
727882d6
AK		 1993
1994 if (priv->cfg->ops->hcmd->set_rxon_chain)
246ed355 1995 priv->cfg->ops->hcmd->set_rxon_chain(priv, ctx);
727882d6 1996
246ed355 1997 return iwlcore_commit_rxon(priv, ctx);
727882d6 1998}
727882d6 1999
b55e75ed 2000int iwl_mac_add_interface(struct ieee80211_hw *hw, struct ieee80211_vif *vif)
cbb6ab94
AK		 2001{
2002 struct iwl_priv *priv = hw->priv;
246ed355 2003 struct iwl_vif_priv *vif_priv = (void *)vif->drv_priv;
d0fe478c 2004 struct iwl_rxon_context *tmp, *ctx = NULL;
47e28f41 2005 int err = 0;
cbb6ab94 2006
3779db10
JB		 2007 IWL_DEBUG_MAC80211(priv, "enter: type %d, addr %pM\n",
2008 vif->type, vif->addr);
cbb6ab94 2009
47e28f41
JB		 2010 mutex_lock(&priv->mutex);
2011
4bd530f3
SG		 2012 if (!iwl_is_ready_rf(priv)) {
2013 IWL_WARN(priv, "Try to add interface when device not ready\n");
b55e75ed
JB		 2014 err = -EINVAL;
2015 goto out;
2016 }
2017
d0fe478c
JB		 2018 for_each_context(priv, tmp) {
2019 u32 possible_modes =
2020 tmp->interface_modes | tmp->exclusive_interface_modes;
2021
2022 if (tmp->vif) {
2023 /* check if this busy context is exclusive */
2024 if (tmp->exclusive_interface_modes &
2025 BIT(tmp->vif->type)) {
2026 err = -EINVAL;
2027 goto out;
2028 }
2029 continue;
2030 }
2031
2032 if (!(possible_modes & BIT(vif->type)))
2033 continue;
2034
2035 /* have maybe usable context w/o interface */
2036 ctx = tmp;
2037 break;
2038 }
2039
2040 if (!ctx) {
47e28f41
JB		 2041 err = -EOPNOTSUPP;
2042 goto out;
cbb6ab94
AK		 2043 }
2044
d0fe478c 2045 vif_priv->ctx = ctx;
8bd413e6 2046 ctx->vif = vif;
d0fe478c
JB		 2047 /*
2048 * This variable will be correct only when there's just
2049 * a single context, but all code using it is for hardware
2050 * that supports only one context.
2051 */
1ed32e4f 2052 priv->iw_mode = vif->type;
cbb6ab94 2053
763cc3bf
JB		 2054 ctx->is_active = true;
2055
b55e75ed 2056 err = iwl_set_mode(priv, vif);
763cc3bf
JB		 2057 if (err) {
2058 if (!ctx->always_active)
2059 ctx->is_active = false;
b55e75ed 2060 goto out_err;
763cc3bf 2061 }
7e246191 2062
7cb1b088
WYG		 2063 if (priv->cfg->bt_params &&
2064 priv->cfg->bt_params->advanced_bt_coexist &&
59079949
JB		 2065 vif->type == NL80211_IFTYPE_ADHOC) {
2066 /*
2067 * pretend to have high BT traffic as long as we
2068 * are operating in IBSS mode, as this will cause
2069 * the rate scaling etc. to behave as intended.
2070 */
2071 priv->bt_traffic_load = IWL_BT_COEX_TRAFFIC_LOAD_HIGH;
2072 }
2073
b55e75ed 2074 goto out;
cbb6ab94 2075
b55e75ed 2076 out_err:
8bd413e6 2077 ctx->vif = NULL;
b55e75ed 2078 priv->iw_mode = NL80211_IFTYPE_STATION;
47e28f41 2079 out:
cbb6ab94
AK		 2080 mutex_unlock(&priv->mutex);
2081
2082 IWL_DEBUG_MAC80211(priv, "leave\n");
47e28f41 2083 return err;
cbb6ab94
AK		 2084}
2085EXPORT_SYMBOL(iwl_mac_add_interface);
2086
d8052319 2087void iwl_mac_remove_interface(struct ieee80211_hw *hw,
b55e75ed 2088 struct ieee80211_vif *vif)
d8052319
AK		 2089{
2090 struct iwl_priv *priv = hw->priv;
246ed355 2091 struct iwl_rxon_context *ctx = iwl_rxon_ctx_from_vif(vif);
d8052319
AK		 2092
2093 IWL_DEBUG_MAC80211(priv, "enter\n");
2094
2095 mutex_lock(&priv->mutex);
2096
d0fe478c
JB		 2097 WARN_ON(ctx->vif != vif);
2098 ctx->vif = NULL;
2099
e7e16b90
SG		 2100 if (priv->scan_vif == vif) {
2101 iwl_scan_cancel_timeout(priv, 200);
2102 iwl_force_scan_end(priv);
2103 }
d0fe478c 2104 iwl_set_mode(priv, vif);
8bd413e6 2105
763cc3bf
JB		 2106 if (!ctx->always_active)
2107 ctx->is_active = false;
2108
59079949
JB		 2109 /*
2110 * When removing the IBSS interface, overwrite the
2111 * BT traffic load with the stored one from the last
2112 * notification, if any. If this is a device that
2113 * doesn't implement this, this has no effect since
2114 * both values are the same and zero.
2115 */
2116 if (vif->type == NL80211_IFTYPE_ADHOC)
2117 priv->bt_traffic_load = priv->notif_bt_traffic_load;
2118
8bd413e6 2119 memset(priv->bssid, 0, ETH_ALEN);
d8052319
AK		 2120 mutex_unlock(&priv->mutex);
2121
2122 IWL_DEBUG_MAC80211(priv, "leave\n");
2123
2124}
2125EXPORT_SYMBOL(iwl_mac_remove_interface);
2126
4808368d
AK		 2127/**
2128 * iwl_mac_config - mac80211 config callback
4808368d
AK		 2129 */
2130int iwl_mac_config(struct ieee80211_hw *hw, u32 changed)
2131{
2132 struct iwl_priv *priv = hw->priv;
2133 const struct iwl_channel_info *ch_info;
2134 struct ieee80211_conf *conf = &hw->conf;
aa2dc6b5 2135 struct ieee80211_channel *channel = conf->channel;
fad95bf5 2136 struct iwl_ht_config *ht_conf = &priv->current_ht_config;
246ed355 2137 struct iwl_rxon_context *ctx;
4808368d
AK		 2138 unsigned long flags = 0;
2139 int ret = 0;
2140 u16 ch;
2141 int scan_active = 0;
2142
2143 mutex_lock(&priv->mutex);
2144
4808368d 2145 IWL_DEBUG_MAC80211(priv, "enter to channel %d changed 0x%X\n",
aa2dc6b5 2146 channel->hw_value, changed);
4808368d
AK		 2147
2148 if (unlikely(!priv->cfg->mod_params->disable_hw_scan &&
2149 test_bit(STATUS_SCANNING, &priv->status))) {
2150 scan_active = 1;
2151 IWL_DEBUG_MAC80211(priv, "leave - scanning\n");
2152 }
2153
ba37a3d0
JB		 2154 if (changed & (IEEE80211_CONF_CHANGE_SMPS |
2155 IEEE80211_CONF_CHANGE_CHANNEL)) {
2156 /* mac80211 uses static for non-HT which is what we want */
2157 priv->current_ht_config.smps = conf->smps_mode;
2158
2159 /*
2160 * Recalculate chain counts.
2161 *
2162 * If monitor mode is enabled then mac80211 will
2163 * set up the SM PS mode to OFF if an HT channel is
2164 * configured.
2165 */
2166 if (priv->cfg->ops->hcmd->set_rxon_chain)
246ed355
JB		 2167 for_each_context(priv, ctx)
2168 priv->cfg->ops->hcmd->set_rxon_chain(priv, ctx);
ba37a3d0 2169 }
4808368d
AK		 2170
2171 /* during scanning mac80211 will delay channel setting until
2172 * scan finish with changed = 0
2173 */
2174 if (!changed || (changed & IEEE80211_CONF_CHANGE_CHANNEL)) {
2175 if (scan_active)
2176 goto set_ch_out;
2177
aa2dc6b5
SZ		 2178 ch = channel->hw_value;
2179 ch_info = iwl_get_channel_info(priv, channel->band, ch);
4808368d
AK		 2180 if (!is_channel_valid(ch_info)) {
2181 IWL_DEBUG_MAC80211(priv, "leave - invalid channel\n");
2182 ret = -EINVAL;
2183 goto set_ch_out;
2184 }
2185
4808368d
AK		 2186 spin_lock_irqsave(&priv->lock, flags);
2187
246ed355 2188 for_each_context(priv, ctx) {
7e6a5886
JB		 2189 /* Configure HT40 channels */
2190 ctx->ht.enabled = conf_is_ht(conf);
2191 if (ctx->ht.enabled) {
2192 if (conf_is_ht40_minus(conf)) {
2193 ctx->ht.extension_chan_offset =
2194 IEEE80211_HT_PARAM_CHA_SEC_BELOW;
2195 ctx->ht.is_40mhz = true;
2196 } else if (conf_is_ht40_plus(conf)) {
2197 ctx->ht.extension_chan_offset =
2198 IEEE80211_HT_PARAM_CHA_SEC_ABOVE;
2199 ctx->ht.is_40mhz = true;
2200 } else {
2201 ctx->ht.extension_chan_offset =
2202 IEEE80211_HT_PARAM_CHA_SEC_NONE;
2203 ctx->ht.is_40mhz = false;
2204 }
2205 } else
2206 ctx->ht.is_40mhz = false;
2207
2208 /*
2209 * Default to no protection. Protection mode will
2210 * later be set from BSS config in iwl_ht_conf
2211 */
2212 ctx->ht.protection = IEEE80211_HT_OP_MODE_PROTECTION_NONE;
2213
246ed355
JB		 2214 /* if we are switching from ht to 2.4 clear flags
2215 * from any ht related info since 2.4 does not
2216 * support ht */
2217 if ((le16_to_cpu(ctx->staging.channel) != ch))
2218 ctx->staging.flags = 0;
4808368d 2219
246ed355
JB		 2220 iwl_set_rxon_channel(priv, channel, ctx);
2221 iwl_set_rxon_ht(priv, ht_conf);
2222
2223 iwl_set_flags_for_band(priv, ctx, channel->band,
8bd413e6 2224 ctx->vif);
246ed355 2225 }
4808368d 2226
4808368d 2227 spin_unlock_irqrestore(&priv->lock, flags);
79d07325 2228
a194e324
JB		 2229 if (priv->cfg->ops->lib->update_bcast_stations)
2230 ret = priv->cfg->ops->lib->update_bcast_stations(priv);
278c2f6f 2231
4808368d
AK		 2232 set_ch_out:
2233 /* The list of supported rates and rate mask can be different
2234 * for each band; since the band may have changed, reset
2235 * the rate mask to what mac80211 lists */
2236 iwl_set_rate(priv);
2237 }
2238
78f5fb7f
JB		 2239 if (changed & (IEEE80211_CONF_CHANGE_PS |
2240 IEEE80211_CONF_CHANGE_IDLE)) {
e312c24c 2241 ret = iwl_power_update_mode(priv, false);
4808368d 2242 if (ret)
e312c24c 2243 IWL_DEBUG_MAC80211(priv, "Error setting sleep level\n");
4808368d
AK		 2244 }
2245
2246 if (changed & IEEE80211_CONF_CHANGE_POWER) {
2247 IWL_DEBUG_MAC80211(priv, "TX Power old=%d new=%d\n",
2248 priv->tx_power_user_lmt, conf->power_level);
2249
2250 iwl_set_tx_power(priv, conf->power_level, false);
2251 }
2252
0cf4c01e
MA		 2253 if (!iwl_is_ready(priv)) {
2254 IWL_DEBUG_MAC80211(priv, "leave - not ready\n");
2255 goto out;
2256 }
2257
4808368d
AK		 2258 if (scan_active)
2259 goto out;
2260
246ed355
JB		 2261 for_each_context(priv, ctx) {
2262 if (memcmp(&ctx->active, &ctx->staging, sizeof(ctx->staging)))
2263 iwlcore_commit_rxon(priv, ctx);
2264 else
2265 IWL_DEBUG_INFO(priv,
2266 "Not re-sending same RXON configuration.\n");
2267 }
4808368d
AK		 2268
2269out:
2270 IWL_DEBUG_MAC80211(priv, "leave\n");
2271 mutex_unlock(&priv->mutex);
2272 return ret;
2273}
2274EXPORT_SYMBOL(iwl_mac_config);
2275
bd564261
AK		 2276void iwl_mac_reset_tsf(struct ieee80211_hw *hw)
2277{
2278 struct iwl_priv *priv = hw->priv;
2279 unsigned long flags;
246ed355
JB		 2280 /* IBSS can only be the IWL_RXON_CTX_BSS context */
2281 struct iwl_rxon_context *ctx = &priv->contexts[IWL_RXON_CTX_BSS];
bd564261
AK		 2282
2283 mutex_lock(&priv->mutex);
2284 IWL_DEBUG_MAC80211(priv, "enter\n");
2285
2286 spin_lock_irqsave(&priv->lock, flags);
fad95bf5 2287 memset(&priv->current_ht_config, 0, sizeof(struct iwl_ht_config));
bd564261
AK		 2288 spin_unlock_irqrestore(&priv->lock, flags);
2289
bd564261 2290 spin_lock_irqsave(&priv->lock, flags);
bd564261
AK		 2291
2292 /* new association get rid of ibss beacon skb */
2293 if (priv->ibss_beacon)
2294 dev_kfree_skb(priv->ibss_beacon);
2295
2296 priv->ibss_beacon = NULL;
2297
bd564261 2298 priv->timestamp = 0;
bd564261
AK		 2299
2300 spin_unlock_irqrestore(&priv->lock, flags);
2301
f5354c17 2302 iwl_scan_cancel_timeout(priv, 100);
bd564261
AK		 2303 if (!iwl_is_ready_rf(priv)) {
2304 IWL_DEBUG_MAC80211(priv, "leave - not ready\n");
2305 mutex_unlock(&priv->mutex);
2306 return;
2307 }
2308
2309 /* we are restarting association process
2310 * clear RXON_FILTER_ASSOC_MSK bit
2311 */
246ed355
JB		 2312 ctx->staging.filter_flags &= ~RXON_FILTER_ASSOC_MSK;
2313 iwlcore_commit_rxon(priv, ctx);
bd564261
AK		 2314
2315 iwl_set_rate(priv);
2316
2317 mutex_unlock(&priv->mutex);
2318
2319 IWL_DEBUG_MAC80211(priv, "leave\n");
2320}
2321EXPORT_SYMBOL(iwl_mac_reset_tsf);
2322
88804e2b
WYG		 2323int iwl_alloc_txq_mem(struct iwl_priv *priv)
2324{
2325 if (!priv->txq)
2326 priv->txq = kzalloc(
7cb1b088
WYG		 2327 sizeof(struct iwl_tx_queue) *
2328 priv->cfg->base_params->num_of_queues,
88804e2b
WYG		 2329 GFP_KERNEL);
2330 if (!priv->txq) {
91dd6c27 2331 IWL_ERR(priv, "Not enough memory for txq\n");
88804e2b
WYG		 2332 return -ENOMEM;
2333 }
2334 return 0;
2335}
2336EXPORT_SYMBOL(iwl_alloc_txq_mem);
2337
2338void iwl_free_txq_mem(struct iwl_priv *priv)
2339{
2340 kfree(priv->txq);
2341 priv->txq = NULL;
2342}
2343EXPORT_SYMBOL(iwl_free_txq_mem);
2344
20594eb0
WYG		 2345#ifdef CONFIG_IWLWIFI_DEBUGFS
2346
2347#define IWL_TRAFFIC_DUMP_SIZE (IWL_TRAFFIC_ENTRY_SIZE * IWL_TRAFFIC_ENTRIES)
2348
2349void iwl_reset_traffic_log(struct iwl_priv *priv)
2350{
2351 priv->tx_traffic_idx = 0;
2352 priv->rx_traffic_idx = 0;
2353 if (priv->tx_traffic)
2354 memset(priv->tx_traffic, 0, IWL_TRAFFIC_DUMP_SIZE);
2355 if (priv->rx_traffic)
2356 memset(priv->rx_traffic, 0, IWL_TRAFFIC_DUMP_SIZE);
2357}
2358
2359int iwl_alloc_traffic_mem(struct iwl_priv *priv)
2360{
2361 u32 traffic_size = IWL_TRAFFIC_DUMP_SIZE;
2362
2363 if (iwl_debug_level & IWL_DL_TX) {
2364 if (!priv->tx_traffic) {
2365 priv->tx_traffic =
2366 kzalloc(traffic_size, GFP_KERNEL);
2367 if (!priv->tx_traffic)
2368 return -ENOMEM;
2369 }
2370 }
2371 if (iwl_debug_level & IWL_DL_RX) {
2372 if (!priv->rx_traffic) {
2373 priv->rx_traffic =
2374 kzalloc(traffic_size, GFP_KERNEL);
2375 if (!priv->rx_traffic)
2376 return -ENOMEM;
2377 }
2378 }
2379 iwl_reset_traffic_log(priv);
2380 return 0;
2381}
2382EXPORT_SYMBOL(iwl_alloc_traffic_mem);
2383
2384void iwl_free_traffic_mem(struct iwl_priv *priv)
2385{
2386 kfree(priv->tx_traffic);
2387 priv->tx_traffic = NULL;
2388
2389 kfree(priv->rx_traffic);
2390 priv->rx_traffic = NULL;
2391}
2392EXPORT_SYMBOL(iwl_free_traffic_mem);
2393
2394void iwl_dbg_log_tx_data_frame(struct iwl_priv *priv,
2395 u16 length, struct ieee80211_hdr *header)
2396{
2397 __le16 fc;
2398 u16 len;
2399
2400 if (likely(!(iwl_debug_level & IWL_DL_TX)))
2401 return;
2402
2403 if (!priv->tx_traffic)
2404 return;
2405
2406 fc = header->frame_control;
2407 if (ieee80211_is_data(fc)) {
2408 len = (length > IWL_TRAFFIC_ENTRY_SIZE)
2409 ? IWL_TRAFFIC_ENTRY_SIZE : length;
2410 memcpy((priv->tx_traffic +
2411 (priv->tx_traffic_idx * IWL_TRAFFIC_ENTRY_SIZE)),
2412 header, len);
2413 priv->tx_traffic_idx =
2414 (priv->tx_traffic_idx + 1) % IWL_TRAFFIC_ENTRIES;
2415 }
2416}
2417EXPORT_SYMBOL(iwl_dbg_log_tx_data_frame);
2418
2419void iwl_dbg_log_rx_data_frame(struct iwl_priv *priv,
2420 u16 length, struct ieee80211_hdr *header)
2421{
2422 __le16 fc;
2423 u16 len;
2424
2425 if (likely(!(iwl_debug_level & IWL_DL_RX)))
2426 return;
2427
2428 if (!priv->rx_traffic)
2429 return;
2430
2431 fc = header->frame_control;
2432 if (ieee80211_is_data(fc)) {
2433 len = (length > IWL_TRAFFIC_ENTRY_SIZE)
2434 ? IWL_TRAFFIC_ENTRY_SIZE : length;
2435 memcpy((priv->rx_traffic +
2436 (priv->rx_traffic_idx * IWL_TRAFFIC_ENTRY_SIZE)),
2437 header, len);
2438 priv->rx_traffic_idx =
2439 (priv->rx_traffic_idx + 1) % IWL_TRAFFIC_ENTRIES;
2440 }
2441}
2442EXPORT_SYMBOL(iwl_dbg_log_rx_data_frame);
22fdf3c9
WYG		 2443
2444const char *get_mgmt_string(int cmd)
2445{
2446 switch (cmd) {
2447 IWL_CMD(MANAGEMENT_ASSOC_REQ);
2448 IWL_CMD(MANAGEMENT_ASSOC_RESP);
2449 IWL_CMD(MANAGEMENT_REASSOC_REQ);
2450 IWL_CMD(MANAGEMENT_REASSOC_RESP);
2451 IWL_CMD(MANAGEMENT_PROBE_REQ);
2452 IWL_CMD(MANAGEMENT_PROBE_RESP);
2453 IWL_CMD(MANAGEMENT_BEACON);
2454 IWL_CMD(MANAGEMENT_ATIM);
2455 IWL_CMD(MANAGEMENT_DISASSOC);
2456 IWL_CMD(MANAGEMENT_AUTH);
2457 IWL_CMD(MANAGEMENT_DEAUTH);
2458 IWL_CMD(MANAGEMENT_ACTION);
2459 default:
2460 return "UNKNOWN";
2461
2462 }
2463}
2464
2465const char *get_ctrl_string(int cmd)
2466{
2467 switch (cmd) {
2468 IWL_CMD(CONTROL_BACK_REQ);
2469 IWL_CMD(CONTROL_BACK);
2470 IWL_CMD(CONTROL_PSPOLL);
2471 IWL_CMD(CONTROL_RTS);
2472 IWL_CMD(CONTROL_CTS);
2473 IWL_CMD(CONTROL_ACK);
2474 IWL_CMD(CONTROL_CFEND);
2475 IWL_CMD(CONTROL_CFENDACK);
2476 default:
2477 return "UNKNOWN";
2478
2479 }
2480}
2481
7163b8a4 2482void iwl_clear_traffic_stats(struct iwl_priv *priv)
22fdf3c9
WYG		 2483{
2484 memset(&priv->tx_stats, 0, sizeof(struct traffic_stats));
22fdf3c9 2485 memset(&priv->rx_stats, 0, sizeof(struct traffic_stats));
7163b8a4 2486 priv->led_tpt = 0;
22fdf3c9
WYG		 2487}
2488
2489/*
2490 * if CONFIG_IWLWIFI_DEBUGFS defined, iwl_update_stats function will
2491 * record all the MGMT, CTRL and DATA pkt for both TX and Rx pass.
2492 * Use debugFs to display the rx/rx_statistics
2493 * if CONFIG_IWLWIFI_DEBUGFS not being defined, then no MGMT and CTRL
2494 * information will be recorded, but DATA pkt still will be recorded
2495 * for the reason of iwl_led.c need to control the led blinking based on
2496 * number of tx and rx data.
2497 *
2498 */
2499void iwl_update_stats(struct iwl_priv *priv, bool is_tx, __le16 fc, u16 len)
2500{
2501 struct traffic_stats *stats;
2502
2503 if (is_tx)
2504 stats = &priv->tx_stats;
2505 else
2506 stats = &priv->rx_stats;
2507
2508 if (ieee80211_is_mgmt(fc)) {
2509 switch (fc & cpu_to_le16(IEEE80211_FCTL_STYPE)) {
2510 case cpu_to_le16(IEEE80211_STYPE_ASSOC_REQ):
2511 stats->mgmt[MANAGEMENT_ASSOC_REQ]++;
2512 break;
2513 case cpu_to_le16(IEEE80211_STYPE_ASSOC_RESP):
2514 stats->mgmt[MANAGEMENT_ASSOC_RESP]++;
2515 break;
2516 case cpu_to_le16(IEEE80211_STYPE_REASSOC_REQ):
2517 stats->mgmt[MANAGEMENT_REASSOC_REQ]++;
2518 break;
2519 case cpu_to_le16(IEEE80211_STYPE_REASSOC_RESP):
2520 stats->mgmt[MANAGEMENT_REASSOC_RESP]++;
2521 break;
2522 case cpu_to_le16(IEEE80211_STYPE_PROBE_REQ):
2523 stats->mgmt[MANAGEMENT_PROBE_REQ]++;
2524 break;
2525 case cpu_to_le16(IEEE80211_STYPE_PROBE_RESP):
2526 stats->mgmt[MANAGEMENT_PROBE_RESP]++;
2527 break;
2528 case cpu_to_le16(IEEE80211_STYPE_BEACON):
2529 stats->mgmt[MANAGEMENT_BEACON]++;
2530 break;
2531 case cpu_to_le16(IEEE80211_STYPE_ATIM):
2532 stats->mgmt[MANAGEMENT_ATIM]++;
2533 break;
2534 case cpu_to_le16(IEEE80211_STYPE_DISASSOC):
2535 stats->mgmt[MANAGEMENT_DISASSOC]++;
2536 break;
2537 case cpu_to_le16(IEEE80211_STYPE_AUTH):
2538 stats->mgmt[MANAGEMENT_AUTH]++;
2539 break;
2540 case cpu_to_le16(IEEE80211_STYPE_DEAUTH):
2541 stats->mgmt[MANAGEMENT_DEAUTH]++;
2542 break;
2543 case cpu_to_le16(IEEE80211_STYPE_ACTION):
2544 stats->mgmt[MANAGEMENT_ACTION]++;
2545 break;
2546 }
2547 } else if (ieee80211_is_ctl(fc)) {
2548 switch (fc & cpu_to_le16(IEEE80211_FCTL_STYPE)) {
2549 case cpu_to_le16(IEEE80211_STYPE_BACK_REQ):
2550 stats->ctrl[CONTROL_BACK_REQ]++;
2551 break;
2552 case cpu_to_le16(IEEE80211_STYPE_BACK):
2553 stats->ctrl[CONTROL_BACK]++;
2554 break;
2555 case cpu_to_le16(IEEE80211_STYPE_PSPOLL):
2556 stats->ctrl[CONTROL_PSPOLL]++;
2557 break;
2558 case cpu_to_le16(IEEE80211_STYPE_RTS):
2559 stats->ctrl[CONTROL_RTS]++;
2560 break;
2561 case cpu_to_le16(IEEE80211_STYPE_CTS):
2562 stats->ctrl[CONTROL_CTS]++;
2563 break;
2564 case cpu_to_le16(IEEE80211_STYPE_ACK):
2565 stats->ctrl[CONTROL_ACK]++;
2566 break;
2567 case cpu_to_le16(IEEE80211_STYPE_CFEND):
2568 stats->ctrl[CONTROL_CFEND]++;
2569 break;
2570 case cpu_to_le16(IEEE80211_STYPE_CFENDACK):
2571 stats->ctrl[CONTROL_CFENDACK]++;
2572 break;
2573 }
2574 } else {
2575 /* data */
2576 stats->data_cnt++;
2577 stats->data_bytes += len;
2578 }
d5f4cf71 2579 iwl_leds_background(priv);
22fdf3c9
WYG		 2580}
2581EXPORT_SYMBOL(iwl_update_stats);
20594eb0
WYG		 2582#endif
2583
a0ea9493 2584static const char *get_csr_string(int cmd)
696bdee3
WYG		 2585{
2586 switch (cmd) {
2587 IWL_CMD(CSR_HW_IF_CONFIG_REG);
2588 IWL_CMD(CSR_INT_COALESCING);
2589 IWL_CMD(CSR_INT);
2590 IWL_CMD(CSR_INT_MASK);
2591 IWL_CMD(CSR_FH_INT_STATUS);
2592 IWL_CMD(CSR_GPIO_IN);
2593 IWL_CMD(CSR_RESET);
2594 IWL_CMD(CSR_GP_CNTRL);
2595 IWL_CMD(CSR_HW_REV);
2596 IWL_CMD(CSR_EEPROM_REG);
2597 IWL_CMD(CSR_EEPROM_GP);
2598 IWL_CMD(CSR_OTP_GP_REG);
2599 IWL_CMD(CSR_GIO_REG);
2600 IWL_CMD(CSR_GP_UCODE_REG);
2601 IWL_CMD(CSR_GP_DRIVER_REG);
2602 IWL_CMD(CSR_UCODE_DRV_GP1);
2603 IWL_CMD(CSR_UCODE_DRV_GP2);
2604 IWL_CMD(CSR_LED_REG);
2605 IWL_CMD(CSR_DRAM_INT_TBL_REG);
2606 IWL_CMD(CSR_GIO_CHICKEN_BITS);
2607 IWL_CMD(CSR_ANA_PLL_CFG);
2608 IWL_CMD(CSR_HW_REV_WA_REG);
2609 IWL_CMD(CSR_DBG_HPET_MEM_REG);
2610 default:
2611 return "UNKNOWN";
2612
2613 }
2614}
2615
2616void iwl_dump_csr(struct iwl_priv *priv)
2617{
2618 int i;
2619 u32 csr_tbl[] = {
2620 CSR_HW_IF_CONFIG_REG,
2621 CSR_INT_COALESCING,
2622 CSR_INT,
2623 CSR_INT_MASK,
2624 CSR_FH_INT_STATUS,
2625 CSR_GPIO_IN,
2626 CSR_RESET,
2627 CSR_GP_CNTRL,
2628 CSR_HW_REV,
2629 CSR_EEPROM_REG,
2630 CSR_EEPROM_GP,
2631 CSR_OTP_GP_REG,
2632 CSR_GIO_REG,
2633 CSR_GP_UCODE_REG,
2634 CSR_GP_DRIVER_REG,
2635 CSR_UCODE_DRV_GP1,
2636 CSR_UCODE_DRV_GP2,
2637 CSR_LED_REG,
2638 CSR_DRAM_INT_TBL_REG,
2639 CSR_GIO_CHICKEN_BITS,
2640 CSR_ANA_PLL_CFG,
2641 CSR_HW_REV_WA_REG,
2642 CSR_DBG_HPET_MEM_REG
2643 };
2644 IWL_ERR(priv, "CSR values:\n");
2645 IWL_ERR(priv, "(2nd byte of CSR_INT_COALESCING is "
2646 "CSR_INT_PERIODIC_REG)\n");
2647 for (i = 0; i < ARRAY_SIZE(csr_tbl); i++) {
2648 IWL_ERR(priv, " %25s: 0X%08x\n",
2649 get_csr_string(csr_tbl[i]),
2650 iwl_read32(priv, csr_tbl[i]));
2651 }
2652}
2653EXPORT_SYMBOL(iwl_dump_csr);
2654
a0ea9493 2655static const char *get_fh_string(int cmd)
1b3eb823
WYG		 2656{
2657 switch (cmd) {
2658 IWL_CMD(FH_RSCSR_CHNL0_STTS_WPTR_REG);
2659 IWL_CMD(FH_RSCSR_CHNL0_RBDCB_BASE_REG);
2660 IWL_CMD(FH_RSCSR_CHNL0_WPTR);
2661 IWL_CMD(FH_MEM_RCSR_CHNL0_CONFIG_REG);
2662 IWL_CMD(FH_MEM_RSSR_SHARED_CTRL_REG);
2663 IWL_CMD(FH_MEM_RSSR_RX_STATUS_REG);
2664 IWL_CMD(FH_MEM_RSSR_RX_ENABLE_ERR_IRQ2DRV);
2665 IWL_CMD(FH_TSSR_TX_STATUS_REG);
2666 IWL_CMD(FH_TSSR_TX_ERROR_REG);
2667 default:
2668 return "UNKNOWN";
2669
2670 }
2671}
2672
2673int iwl_dump_fh(struct iwl_priv *priv, char **buf, bool display)
2674{
2675 int i;
2676#ifdef CONFIG_IWLWIFI_DEBUG
2677 int pos = 0;
2678 size_t bufsz = 0;
2679#endif
2680 u32 fh_tbl[] = {
2681 FH_RSCSR_CHNL0_STTS_WPTR_REG,
2682 FH_RSCSR_CHNL0_RBDCB_BASE_REG,
2683 FH_RSCSR_CHNL0_WPTR,
2684 FH_MEM_RCSR_CHNL0_CONFIG_REG,
2685 FH_MEM_RSSR_SHARED_CTRL_REG,
2686 FH_MEM_RSSR_RX_STATUS_REG,
2687 FH_MEM_RSSR_RX_ENABLE_ERR_IRQ2DRV,
2688 FH_TSSR_TX_STATUS_REG,
2689 FH_TSSR_TX_ERROR_REG
2690 };
2691#ifdef CONFIG_IWLWIFI_DEBUG
2692 if (display) {
2693 bufsz = ARRAY_SIZE(fh_tbl) * 48 + 40;
2694 *buf = kmalloc(bufsz, GFP_KERNEL);
2695 if (!*buf)
2696 return -ENOMEM;
2697 pos += scnprintf(*buf + pos, bufsz - pos,
2698 "FH register values:\n");
2699 for (i = 0; i < ARRAY_SIZE(fh_tbl); i++) {
2700 pos += scnprintf(*buf + pos, bufsz - pos,
2701 " %34s: 0X%08x\n",
2702 get_fh_string(fh_tbl[i]),
2703 iwl_read_direct32(priv, fh_tbl[i]));
2704 }
2705 return pos;
2706 }
2707#endif
2708 IWL_ERR(priv, "FH register values:\n");
2709 for (i = 0; i < ARRAY_SIZE(fh_tbl); i++) {
2710 IWL_ERR(priv, " %34s: 0X%08x\n",
2711 get_fh_string(fh_tbl[i]),
2712 iwl_read_direct32(priv, fh_tbl[i]));
2713 }
2714 return 0;
2715}
2716EXPORT_SYMBOL(iwl_dump_fh);
2717
a93e7973 2718static void iwl_force_rf_reset(struct iwl_priv *priv)
afbdd69a
WYG		 2719{
2720 if (test_bit(STATUS_EXIT_PENDING, &priv->status))
2721 return;
2722
246ed355 2723 if (!iwl_is_any_associated(priv)) {
afbdd69a
WYG		 2724 IWL_DEBUG_SCAN(priv, "force reset rejected: not associated\n");
2725 return;
2726 }
2727 /*
2728 * There is no easy and better way to force reset the radio,
2729 * the only known method is switching channel which will force to
2730 * reset and tune the radio.
2731 * Use internal short scan (single channel) operation to should
2732 * achieve this objective.
2733 * Driver should reset the radio when number of consecutive missed
2734 * beacon, or any other uCode error condition detected.
2735 */
2736 IWL_DEBUG_INFO(priv, "perform radio reset.\n");
2737 iwl_internal_short_hw_scan(priv);
afbdd69a 2738}
a93e7973 2739
a93e7973 2740
c04f9f22 2741int iwl_force_reset(struct iwl_priv *priv, int mode, bool external)
a93e7973 2742{
8a472da4
WYG		 2743 struct iwl_force_reset *force_reset;
2744
a93e7973
WYG		 2745 if (test_bit(STATUS_EXIT_PENDING, &priv->status))
2746 return -EINVAL;
2747
7acc7c68
WYG		 2748 if (test_bit(STATUS_SCANNING, &priv->status)) {
2749 IWL_DEBUG_INFO(priv, "scan in progress.\n");
2750 return -EINVAL;
2751 }
2752
8a472da4
WYG		 2753 if (mode >= IWL_MAX_FORCE_RESET) {
2754 IWL_DEBUG_INFO(priv, "invalid reset request.\n");
2755 return -EINVAL;
2756 }
2757 force_reset = &priv->force_reset[mode];
2758 force_reset->reset_request_count++;
c04f9f22
WYG		 2759 if (!external) {
2760 if (force_reset->last_force_reset_jiffies &&
2761 time_after(force_reset->last_force_reset_jiffies +
2762 force_reset->reset_duration, jiffies)) {
2763 IWL_DEBUG_INFO(priv, "force reset rejected\n");
2764 force_reset->reset_reject_count++;
2765 return -EAGAIN;
2766 }
a93e7973 2767 }
8a472da4
WYG		 2768 force_reset->reset_success_count++;
2769 force_reset->last_force_reset_jiffies = jiffies;
a93e7973 2770 IWL_DEBUG_INFO(priv, "perform force reset (%d)\n", mode);
a93e7973
WYG		 2771 switch (mode) {
2772 case IWL_RF_RESET:
2773 iwl_force_rf_reset(priv);
2774 break;
2775 case IWL_FW_RESET:
c04f9f22
WYG		 2776 /*
2777 * if the request is from external(ex: debugfs),
2778 * then always perform the request in regardless the module
2779 * parameter setting
2780 * if the request is from internal (uCode error or driver
2781 * detect failure), then fw_restart module parameter
2782 * need to be check before performing firmware reload
2783 */
2784 if (!external && !priv->cfg->mod_params->restart_fw) {
2785 IWL_DEBUG_INFO(priv, "Cancel firmware reload based on "
2786 "module parameter setting\n");
2787 break;
2788 }
a93e7973
WYG		 2789 IWL_ERR(priv, "On demand firmware reload\n");
2790 /* Set the FW error flag -- cleared on iwl_down */
2791 set_bit(STATUS_FW_ERROR, &priv->status);
2792 wake_up_interruptible(&priv->wait_command_queue);
2793 /*
2794 * Keep the restart process from trying to send host
2795 * commands by clearing the INIT status bit
2796 */
2797 clear_bit(STATUS_READY, &priv->status);
2798 queue_work(priv->workqueue, &priv->restart);
2799 break;
a93e7973 2800 }
a93e7973
WYG		 2801 return 0;
2802}
b74e31a9
WYG		 2803EXPORT_SYMBOL(iwl_force_reset);
2804
2805/**
2806 * iwl_bg_monitor_recover - Timer callback to check for stuck queue and recover
2807 *
2808 * During normal condition (no queue is stuck), the timer is continually set to
2809 * execute every monitor_recover_period milliseconds after the last timer
2810 * expired. When the queue read_ptr is at the same place, the timer is
2811 * shorten to 100mSecs. This is
2812 * 1) to reduce the chance that the read_ptr may wrap around (not stuck)
2813 * 2) to detect the stuck queues quicker before the station and AP can
2814 * disassociate each other.
2815 *
2816 * This function monitors all the tx queues and recover from it if any
2817 * of the queues are stuck.
2818 * 1. It first check the cmd queue for stuck conditions. If it is stuck,
2819 * it will recover by resetting the firmware and return.
2820 * 2. Then, it checks for station association. If it associates it will check
2821 * other queues. If any queue is stuck, it will recover by resetting
2822 * the firmware.
2823 * Note: It the number of times the queue read_ptr to be at the same place to
2824 * be MAX_REPEAT+1 in order to consider to be stuck.
2825 */
2826/*
2827 * The maximum number of times the read pointer of the tx queue at the
2828 * same place without considering to be stuck.
2829 */
2830#define MAX_REPEAT (2)
2831static int iwl_check_stuck_queue(struct iwl_priv *priv, int cnt)
2832{
2833 struct iwl_tx_queue *txq;
2834 struct iwl_queue *q;
2835
2836 txq = &priv->txq[cnt];
2837 q = &txq->q;
2838 /* queue is empty, skip */
7cb1b088
WYG		 2839 if (q->read_ptr == q->write_ptr)
2840 return 0;
2841
2842 if (q->read_ptr == q->last_read_ptr) {
2843 /* a queue has not been read from last time */
2844 if (q->repeat_same_read_ptr > MAX_REPEAT) {
2845 IWL_ERR(priv,
2846 "queue %d stuck %d time. Fw reload.\n",
2847 q->id, q->repeat_same_read_ptr);
b74e31a9 2848 q->repeat_same_read_ptr = 0;
7cb1b088
WYG		 2849 iwl_force_reset(priv, IWL_FW_RESET, false);
2850 } else {
2851 q->repeat_same_read_ptr++;
2852 IWL_DEBUG_RADIO(priv,
2853 "queue %d, not read %d time\n",
2854 q->id,
2855 q->repeat_same_read_ptr);
2856 if (priv->cfg->bt_params &&
2857 !priv->cfg->bt_params->advanced_bt_coexist) {
2858 mod_timer(&priv->monitor_recover,
2859 jiffies + msecs_to_jiffies(
2860 IWL_ONE_HUNDRED_MSECS));
2861 return 1;
2862 }
b74e31a9 2863 }
7cb1b088
WYG		 2864 } else {
2865 q->last_read_ptr = q->read_ptr;
2866 q->repeat_same_read_ptr = 0;
b74e31a9
WYG		 2867 }
2868 return 0;
2869}
2870
2871void iwl_bg_monitor_recover(unsigned long data)
2872{
2873 struct iwl_priv *priv = (struct iwl_priv *)data;
2874 int cnt;
2875
2876 if (test_bit(STATUS_EXIT_PENDING, &priv->status))
2877 return;
2878
2879 /* monitor and check for stuck cmd queue */
13bb9483 2880 if (iwl_check_stuck_queue(priv, priv->cmd_queue))
b74e31a9
WYG		 2881 return;
2882
2883 /* monitor and check for other stuck queues */
246ed355 2884 if (iwl_is_any_associated(priv)) {
b74e31a9
WYG		 2885 for (cnt = 0; cnt < priv->hw_params.max_txq_num; cnt++) {
2886 /* skip as we already checked the command queue */
13bb9483 2887 if (cnt == priv->cmd_queue)
b74e31a9
WYG		 2888 continue;
2889 if (iwl_check_stuck_queue(priv, cnt))
2890 return;
2891 }
2892 }
7cb1b088 2893 if (priv->cfg->base_params->monitor_recover_period) {
7bdc473c
WYG		 2894 /*
2895 * Reschedule the timer to occur in
7cb1b088 2896 * priv->cfg->base_params->monitor_recover_period
7bdc473c
WYG		 2897 */
2898 mod_timer(&priv->monitor_recover, jiffies + msecs_to_jiffies(
7cb1b088 2899 priv->cfg->base_params->monitor_recover_period));
7bdc473c 2900 }
b74e31a9
WYG		 2901}
2902EXPORT_SYMBOL(iwl_bg_monitor_recover);
afbdd69a 2903
a0ee74cf
WYG		 2904
2905/*
2906 * extended beacon time format
2907 * time in usec will be changed into a 32-bit value in extended:internal format
2908 * the extended part is the beacon counts
2909 * the internal part is the time in usec within one beacon interval
2910 */
2911u32 iwl_usecs_to_beacons(struct iwl_priv *priv, u32 usec, u32 beacon_interval)
2912{
2913 u32 quot;
2914 u32 rem;
2915 u32 interval = beacon_interval * TIME_UNIT;
2916
2917 if (!interval || !usec)
2918 return 0;
2919
2920 quot = (usec / interval) &
2921 (iwl_beacon_time_mask_high(priv,
2922 priv->hw_params.beacon_time_tsf_bits) >>
2923 priv->hw_params.beacon_time_tsf_bits);
2924 rem = (usec % interval) & iwl_beacon_time_mask_low(priv,
2925 priv->hw_params.beacon_time_tsf_bits);
2926
2927 return (quot << priv->hw_params.beacon_time_tsf_bits) + rem;
2928}
2929EXPORT_SYMBOL(iwl_usecs_to_beacons);
2930
2931/* base is usually what we get from ucode with each received frame,
2932 * the same as HW timer counter counting down
2933 */
2934__le32 iwl_add_beacon_time(struct iwl_priv *priv, u32 base,
2935 u32 addon, u32 beacon_interval)
2936{
2937 u32 base_low = base & iwl_beacon_time_mask_low(priv,
2938 priv->hw_params.beacon_time_tsf_bits);
2939 u32 addon_low = addon & iwl_beacon_time_mask_low(priv,
2940 priv->hw_params.beacon_time_tsf_bits);
2941 u32 interval = beacon_interval * TIME_UNIT;
2942 u32 res = (base & iwl_beacon_time_mask_high(priv,
2943 priv->hw_params.beacon_time_tsf_bits)) +
2944 (addon & iwl_beacon_time_mask_high(priv,
2945 priv->hw_params.beacon_time_tsf_bits));
2946
2947 if (base_low > addon_low)
2948 res += base_low - addon_low;
2949 else if (base_low < addon_low) {
2950 res += interval + base_low - addon_low;
2951 res += (1 << priv->hw_params.beacon_time_tsf_bits);
2952 } else
2953 res += (1 << priv->hw_params.beacon_time_tsf_bits);
2954
2955 return cpu_to_le32(res);
2956}
2957EXPORT_SYMBOL(iwl_add_beacon_time);
2958
6da3a13e
WYG		 2959#ifdef CONFIG_PM
2960
2961int iwl_pci_suspend(struct pci_dev *pdev, pm_message_t state)
2962{
2963 struct iwl_priv *priv = pci_get_drvdata(pdev);
2964
2965 /*
2966 * This function is called when system goes into suspend state
2967 * mac80211 will call iwl_mac_stop() from the mac80211 suspend function
2968 * first but since iwl_mac_stop() has no knowledge of who the caller is,
2969 * it will not call apm_ops.stop() to stop the DMA operation.
2970 * Calling apm_ops.stop here to make sure we stop the DMA.
2971 */
2972 priv->cfg->ops->lib->apm_ops.stop(priv);
2973
2974 pci_save_state(pdev);
2975 pci_disable_device(pdev);
2976 pci_set_power_state(pdev, PCI_D3hot);
2977
2978 return 0;
2979}
2980EXPORT_SYMBOL(iwl_pci_suspend);
2981
2982int iwl_pci_resume(struct pci_dev *pdev)
2983{
2984 struct iwl_priv *priv = pci_get_drvdata(pdev);
2985 int ret;
0ab84cff 2986 bool hw_rfkill = false;
6da3a13e 2987
cd398c31
AK		 2988 /*
2989 * We disable the RETRY_TIMEOUT register (0x41) to keep
2990 * PCI Tx retries from interfering with C3 CPU state.
2991 */
2992 pci_write_config_byte(pdev, PCI_CFG_RETRY_TIMEOUT, 0x00);
2993
6da3a13e
WYG		 2994 pci_set_power_state(pdev, PCI_D0);
2995 ret = pci_enable_device(pdev);
2996 if (ret)
2997 return ret;
2998 pci_restore_state(pdev);
2999 iwl_enable_interrupts(priv);
3000
0ab84cff
JB		 3001 if (!(iwl_read32(priv, CSR_GP_CNTRL) &
3002 CSR_GP_CNTRL_REG_FLAG_HW_RF_KILL_SW))
3003 hw_rfkill = true;
3004
3005 if (hw_rfkill)
3006 set_bit(STATUS_RF_KILL_HW, &priv->status);
3007 else
3008 clear_bit(STATUS_RF_KILL_HW, &priv->status);
3009
3010 wiphy_rfkill_set_hw_state(priv->hw->wiphy, hw_rfkill);
3011
6da3a13e
WYG		 3012 return 0;
3013}
3014EXPORT_SYMBOL(iwl_pci_resume);
3015
3016#endif /* CONFIG_PM */
Linux kernel - Deliverables
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