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iwlwifi: move iwl_init_geos to iwl-agn.c
[GitHub/mt8127/android_kernel_alcatel_ttab.git] / drivers / net / wireless / iwlwifi / iwl-core.c
1 /******************************************************************************
2 *
3 * GPL LICENSE SUMMARY
4 *
5 * Copyright(c) 2008 - 2012 Intel Corporation. All rights reserved.
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:
25 * Intel Linux Wireless <ilw@linux.intel.com>
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>
31 #include <linux/etherdevice.h>
32 #include <linux/sched.h>
33 #include <linux/slab.h>
34 #include <net/mac80211.h>
35
36 #include "iwl-eeprom.h"
37 #include "iwl-debug.h"
38 #include "iwl-core.h"
39 #include "iwl-io.h"
40 #include "iwl-power.h"
41 #include "iwl-shared.h"
42 #include "iwl-agn.h"
43 #include "iwl-trans.h"
44
45 const u8 iwl_bcast_addr[ETH_ALEN] = { 0xFF, 0xFF, 0xFF, 0xFF, 0xFF, 0xFF };
46
47 static bool iwl_is_channel_extension(struct iwl_priv *priv,
48 enum ieee80211_band band,
49 u16 channel, u8 extension_chan_offset)
50 {
51 const struct iwl_channel_info *ch_info;
52
53 ch_info = iwl_get_channel_info(priv, band, channel);
54 if (!is_channel_valid(ch_info))
55 return false;
56
57 if (extension_chan_offset == IEEE80211_HT_PARAM_CHA_SEC_ABOVE)
58 return !(ch_info->ht40_extension_channel &
59 IEEE80211_CHAN_NO_HT40PLUS);
60 else if (extension_chan_offset == IEEE80211_HT_PARAM_CHA_SEC_BELOW)
61 return !(ch_info->ht40_extension_channel &
62 IEEE80211_CHAN_NO_HT40MINUS);
63
64 return false;
65 }
66
67 bool iwl_is_ht40_tx_allowed(struct iwl_priv *priv,
68 struct iwl_rxon_context *ctx,
69 struct ieee80211_sta_ht_cap *ht_cap)
70 {
71 if (!ctx->ht.enabled || !ctx->ht.is_40mhz)
72 return false;
73
74 /*
75 * We do not check for IEEE80211_HT_CAP_SUP_WIDTH_20_40
76 * the bit will not set if it is pure 40MHz case
77 */
78 if (ht_cap && !ht_cap->ht_supported)
79 return false;
80
81 #ifdef CONFIG_IWLWIFI_DEBUGFS
82 if (priv->disable_ht40)
83 return false;
84 #endif
85
86 return iwl_is_channel_extension(priv, priv->band,
87 le16_to_cpu(ctx->staging.channel),
88 ctx->ht.extension_chan_offset);
89 }
90
91 static u16 iwl_adjust_beacon_interval(u16 beacon_val, u16 max_beacon_val)
92 {
93 u16 new_val;
94 u16 beacon_factor;
95
96 /*
97 * If mac80211 hasn't given us a beacon interval, program
98 * the default into the device (not checking this here
99 * would cause the adjustment below to return the maximum
100 * value, which may break PAN.)
101 */
102 if (!beacon_val)
103 return DEFAULT_BEACON_INTERVAL;
104
105 /*
106 * If the beacon interval we obtained from the peer
107 * is too large, we'll have to wake up more often
108 * (and in IBSS case, we'll beacon too much)
109 *
110 * For example, if max_beacon_val is 4096, and the
111 * requested beacon interval is 7000, we'll have to
112 * use 3500 to be able to wake up on the beacons.
113 *
114 * This could badly influence beacon detection stats.
115 */
116
117 beacon_factor = (beacon_val + max_beacon_val) / max_beacon_val;
118 new_val = beacon_val / beacon_factor;
119
120 if (!new_val)
121 new_val = max_beacon_val;
122
123 return new_val;
124 }
125
126 int iwl_send_rxon_timing(struct iwl_priv *priv, struct iwl_rxon_context *ctx)
127 {
128 u64 tsf;
129 s32 interval_tm, rem;
130 struct ieee80211_conf *conf = NULL;
131 u16 beacon_int;
132 struct ieee80211_vif *vif = ctx->vif;
133
134 conf = &priv->hw->conf;
135
136 lockdep_assert_held(&priv->mutex);
137
138 memset(&ctx->timing, 0, sizeof(struct iwl_rxon_time_cmd));
139
140 ctx->timing.timestamp = cpu_to_le64(priv->timestamp);
141 ctx->timing.listen_interval = cpu_to_le16(conf->listen_interval);
142
143 beacon_int = vif ? vif->bss_conf.beacon_int : 0;
144
145 /*
146 * TODO: For IBSS we need to get atim_window from mac80211,
147 * for now just always use 0
148 */
149 ctx->timing.atim_window = 0;
150
151 if (ctx->ctxid == IWL_RXON_CTX_PAN &&
152 (!ctx->vif || ctx->vif->type != NL80211_IFTYPE_STATION) &&
153 iwl_is_associated(priv, IWL_RXON_CTX_BSS) &&
154 priv->contexts[IWL_RXON_CTX_BSS].vif &&
155 priv->contexts[IWL_RXON_CTX_BSS].vif->bss_conf.beacon_int) {
156 ctx->timing.beacon_interval =
157 priv->contexts[IWL_RXON_CTX_BSS].timing.beacon_interval;
158 beacon_int = le16_to_cpu(ctx->timing.beacon_interval);
159 } else if (ctx->ctxid == IWL_RXON_CTX_BSS &&
160 iwl_is_associated(priv, IWL_RXON_CTX_PAN) &&
161 priv->contexts[IWL_RXON_CTX_PAN].vif &&
162 priv->contexts[IWL_RXON_CTX_PAN].vif->bss_conf.beacon_int &&
163 (!iwl_is_associated_ctx(ctx) || !ctx->vif ||
164 !ctx->vif->bss_conf.beacon_int)) {
165 ctx->timing.beacon_interval =
166 priv->contexts[IWL_RXON_CTX_PAN].timing.beacon_interval;
167 beacon_int = le16_to_cpu(ctx->timing.beacon_interval);
168 } else {
169 beacon_int = iwl_adjust_beacon_interval(beacon_int,
170 IWL_MAX_UCODE_BEACON_INTERVAL * TIME_UNIT);
171 ctx->timing.beacon_interval = cpu_to_le16(beacon_int);
172 }
173
174 ctx->beacon_int = beacon_int;
175
176 tsf = priv->timestamp; /* tsf is modifed by do_div: copy it */
177 interval_tm = beacon_int * TIME_UNIT;
178 rem = do_div(tsf, interval_tm);
179 ctx->timing.beacon_init_val = cpu_to_le32(interval_tm - rem);
180
181 ctx->timing.dtim_period = vif ? (vif->bss_conf.dtim_period ?: 1) : 1;
182
183 IWL_DEBUG_ASSOC(priv,
184 "beacon interval %d beacon timer %d beacon tim %d\n",
185 le16_to_cpu(ctx->timing.beacon_interval),
186 le32_to_cpu(ctx->timing.beacon_init_val),
187 le16_to_cpu(ctx->timing.atim_window));
188
189 return iwl_dvm_send_cmd_pdu(priv, ctx->rxon_timing_cmd,
190 CMD_SYNC, sizeof(ctx->timing), &ctx->timing);
191 }
192
193 void iwl_set_rxon_hwcrypto(struct iwl_priv *priv, struct iwl_rxon_context *ctx,
194 int hw_decrypt)
195 {
196 struct iwl_rxon_cmd *rxon = &ctx->staging;
197
198 if (hw_decrypt)
199 rxon->filter_flags &= ~RXON_FILTER_DIS_DECRYPT_MSK;
200 else
201 rxon->filter_flags |= RXON_FILTER_DIS_DECRYPT_MSK;
202
203 }
204
205 /* validate RXON structure is valid */
206 int iwl_check_rxon_cmd(struct iwl_priv *priv, struct iwl_rxon_context *ctx)
207 {
208 struct iwl_rxon_cmd *rxon = &ctx->staging;
209 u32 errors = 0;
210
211 if (rxon->flags & RXON_FLG_BAND_24G_MSK) {
212 if (rxon->flags & RXON_FLG_TGJ_NARROW_BAND_MSK) {
213 IWL_WARN(priv, "check 2.4G: wrong narrow\n");
214 errors |= BIT(0);
215 }
216 if (rxon->flags & RXON_FLG_RADAR_DETECT_MSK) {
217 IWL_WARN(priv, "check 2.4G: wrong radar\n");
218 errors |= BIT(1);
219 }
220 } else {
221 if (!(rxon->flags & RXON_FLG_SHORT_SLOT_MSK)) {
222 IWL_WARN(priv, "check 5.2G: not short slot!\n");
223 errors |= BIT(2);
224 }
225 if (rxon->flags & RXON_FLG_CCK_MSK) {
226 IWL_WARN(priv, "check 5.2G: CCK!\n");
227 errors |= BIT(3);
228 }
229 }
230 if ((rxon->node_addr[0] | rxon->bssid_addr[0]) & 0x1) {
231 IWL_WARN(priv, "mac/bssid mcast!\n");
232 errors |= BIT(4);
233 }
234
235 /* make sure basic rates 6Mbps and 1Mbps are supported */
236 if ((rxon->ofdm_basic_rates & IWL_RATE_6M_MASK) == 0 &&
237 (rxon->cck_basic_rates & IWL_RATE_1M_MASK) == 0) {
238 IWL_WARN(priv, "neither 1 nor 6 are basic\n");
239 errors |= BIT(5);
240 }
241
242 if (le16_to_cpu(rxon->assoc_id) > 2007) {
243 IWL_WARN(priv, "aid > 2007\n");
244 errors |= BIT(6);
245 }
246
247 if ((rxon->flags & (RXON_FLG_CCK_MSK | RXON_FLG_SHORT_SLOT_MSK))
248 == (RXON_FLG_CCK_MSK | RXON_FLG_SHORT_SLOT_MSK)) {
249 IWL_WARN(priv, "CCK and short slot\n");
250 errors |= BIT(7);
251 }
252
253 if ((rxon->flags & (RXON_FLG_CCK_MSK | RXON_FLG_AUTO_DETECT_MSK))
254 == (RXON_FLG_CCK_MSK | RXON_FLG_AUTO_DETECT_MSK)) {
255 IWL_WARN(priv, "CCK and auto detect");
256 errors |= BIT(8);
257 }
258
259 if ((rxon->flags & (RXON_FLG_AUTO_DETECT_MSK |
260 RXON_FLG_TGG_PROTECT_MSK)) ==
261 RXON_FLG_TGG_PROTECT_MSK) {
262 IWL_WARN(priv, "TGg but no auto-detect\n");
263 errors |= BIT(9);
264 }
265
266 if (rxon->channel == 0) {
267 IWL_WARN(priv, "zero channel is invalid\n");
268 errors |= BIT(10);
269 }
270
271 WARN(errors, "Invalid RXON (%#x), channel %d",
272 errors, le16_to_cpu(rxon->channel));
273
274 return errors ? -EINVAL : 0;
275 }
276
277 /**
278 * iwl_full_rxon_required - check if full RXON (vs RXON_ASSOC) cmd is needed
279 * @priv: staging_rxon is compared to active_rxon
280 *
281 * If the RXON structure is changing enough to require a new tune,
282 * or is clearing the RXON_FILTER_ASSOC_MSK, then return 1 to indicate that
283 * a new tune (full RXON command, rather than RXON_ASSOC cmd) is required.
284 */
285 int iwl_full_rxon_required(struct iwl_priv *priv,
286 struct iwl_rxon_context *ctx)
287 {
288 const struct iwl_rxon_cmd *staging = &ctx->staging;
289 const struct iwl_rxon_cmd *active = &ctx->active;
290
291 #define CHK(cond) \
292 if ((cond)) { \
293 IWL_DEBUG_INFO(priv, "need full RXON - " #cond "\n"); \
294 return 1; \
295 }
296
297 #define CHK_NEQ(c1, c2) \
298 if ((c1) != (c2)) { \
299 IWL_DEBUG_INFO(priv, "need full RXON - " \
300 #c1 " != " #c2 " - %d != %d\n", \
301 (c1), (c2)); \
302 return 1; \
303 }
304
305 /* These items are only settable from the full RXON command */
306 CHK(!iwl_is_associated_ctx(ctx));
307 CHK(compare_ether_addr(staging->bssid_addr, active->bssid_addr));
308 CHK(compare_ether_addr(staging->node_addr, active->node_addr));
309 CHK(compare_ether_addr(staging->wlap_bssid_addr,
310 active->wlap_bssid_addr));
311 CHK_NEQ(staging->dev_type, active->dev_type);
312 CHK_NEQ(staging->channel, active->channel);
313 CHK_NEQ(staging->air_propagation, active->air_propagation);
314 CHK_NEQ(staging->ofdm_ht_single_stream_basic_rates,
315 active->ofdm_ht_single_stream_basic_rates);
316 CHK_NEQ(staging->ofdm_ht_dual_stream_basic_rates,
317 active->ofdm_ht_dual_stream_basic_rates);
318 CHK_NEQ(staging->ofdm_ht_triple_stream_basic_rates,
319 active->ofdm_ht_triple_stream_basic_rates);
320 CHK_NEQ(staging->assoc_id, active->assoc_id);
321
322 /* flags, filter_flags, ofdm_basic_rates, and cck_basic_rates can
323 * be updated with the RXON_ASSOC command -- however only some
324 * flag transitions are allowed using RXON_ASSOC */
325
326 /* Check if we are not switching bands */
327 CHK_NEQ(staging->flags & RXON_FLG_BAND_24G_MSK,
328 active->flags & RXON_FLG_BAND_24G_MSK);
329
330 /* Check if we are switching association toggle */
331 CHK_NEQ(staging->filter_flags & RXON_FILTER_ASSOC_MSK,
332 active->filter_flags & RXON_FILTER_ASSOC_MSK);
333
334 #undef CHK
335 #undef CHK_NEQ
336
337 return 0;
338 }
339
340 static void _iwl_set_rxon_ht(struct iwl_priv *priv,
341 struct iwl_ht_config *ht_conf,
342 struct iwl_rxon_context *ctx)
343 {
344 struct iwl_rxon_cmd *rxon = &ctx->staging;
345
346 if (!ctx->ht.enabled) {
347 rxon->flags &= ~(RXON_FLG_CHANNEL_MODE_MSK |
348 RXON_FLG_CTRL_CHANNEL_LOC_HI_MSK |
349 RXON_FLG_HT40_PROT_MSK |
350 RXON_FLG_HT_PROT_MSK);
351 return;
352 }
353
354 /* FIXME: if the definition of ht.protection changed, the "translation"
355 * will be needed for rxon->flags
356 */
357 rxon->flags |= cpu_to_le32(ctx->ht.protection << RXON_FLG_HT_OPERATING_MODE_POS);
358
359 /* Set up channel bandwidth:
360 * 20 MHz only, 20/40 mixed or pure 40 if ht40 ok */
361 /* clear the HT channel mode before set the mode */
362 rxon->flags &= ~(RXON_FLG_CHANNEL_MODE_MSK |
363 RXON_FLG_CTRL_CHANNEL_LOC_HI_MSK);
364 if (iwl_is_ht40_tx_allowed(priv, ctx, NULL)) {
365 /* pure ht40 */
366 if (ctx->ht.protection == IEEE80211_HT_OP_MODE_PROTECTION_20MHZ) {
367 rxon->flags |= RXON_FLG_CHANNEL_MODE_PURE_40;
368 /* Note: control channel is opposite of extension channel */
369 switch (ctx->ht.extension_chan_offset) {
370 case IEEE80211_HT_PARAM_CHA_SEC_ABOVE:
371 rxon->flags &= ~RXON_FLG_CTRL_CHANNEL_LOC_HI_MSK;
372 break;
373 case IEEE80211_HT_PARAM_CHA_SEC_BELOW:
374 rxon->flags |= RXON_FLG_CTRL_CHANNEL_LOC_HI_MSK;
375 break;
376 }
377 } else {
378 /* Note: control channel is opposite of extension channel */
379 switch (ctx->ht.extension_chan_offset) {
380 case IEEE80211_HT_PARAM_CHA_SEC_ABOVE:
381 rxon->flags &= ~(RXON_FLG_CTRL_CHANNEL_LOC_HI_MSK);
382 rxon->flags |= RXON_FLG_CHANNEL_MODE_MIXED;
383 break;
384 case IEEE80211_HT_PARAM_CHA_SEC_BELOW:
385 rxon->flags |= RXON_FLG_CTRL_CHANNEL_LOC_HI_MSK;
386 rxon->flags |= RXON_FLG_CHANNEL_MODE_MIXED;
387 break;
388 case IEEE80211_HT_PARAM_CHA_SEC_NONE:
389 default:
390 /* channel location only valid if in Mixed mode */
391 IWL_ERR(priv, "invalid extension channel offset\n");
392 break;
393 }
394 }
395 } else {
396 rxon->flags |= RXON_FLG_CHANNEL_MODE_LEGACY;
397 }
398
399 iwlagn_set_rxon_chain(priv, ctx);
400
401 IWL_DEBUG_ASSOC(priv, "rxon flags 0x%X operation mode :0x%X "
402 "extension channel offset 0x%x\n",
403 le32_to_cpu(rxon->flags), ctx->ht.protection,
404 ctx->ht.extension_chan_offset);
405 }
406
407 void iwl_set_rxon_ht(struct iwl_priv *priv, struct iwl_ht_config *ht_conf)
408 {
409 struct iwl_rxon_context *ctx;
410
411 for_each_context(priv, ctx)
412 _iwl_set_rxon_ht(priv, ht_conf, ctx);
413 }
414
415 /* Return valid, unused, channel for a passive scan to reset the RF */
416 u8 iwl_get_single_channel_number(struct iwl_priv *priv,
417 enum ieee80211_band band)
418 {
419 const struct iwl_channel_info *ch_info;
420 int i;
421 u8 channel = 0;
422 u8 min, max;
423 struct iwl_rxon_context *ctx;
424
425 if (band == IEEE80211_BAND_5GHZ) {
426 min = 14;
427 max = priv->channel_count;
428 } else {
429 min = 0;
430 max = 14;
431 }
432
433 for (i = min; i < max; i++) {
434 bool busy = false;
435
436 for_each_context(priv, ctx) {
437 busy = priv->channel_info[i].channel ==
438 le16_to_cpu(ctx->staging.channel);
439 if (busy)
440 break;
441 }
442
443 if (busy)
444 continue;
445
446 channel = priv->channel_info[i].channel;
447 ch_info = iwl_get_channel_info(priv, band, channel);
448 if (is_channel_valid(ch_info))
449 break;
450 }
451
452 return channel;
453 }
454
455 /**
456 * iwl_set_rxon_channel - Set the band and channel values in staging RXON
457 * @ch: requested channel as a pointer to struct ieee80211_channel
458
459 * NOTE: Does not commit to the hardware; it sets appropriate bit fields
460 * in the staging RXON flag structure based on the ch->band
461 */
462 void iwl_set_rxon_channel(struct iwl_priv *priv, struct ieee80211_channel *ch,
463 struct iwl_rxon_context *ctx)
464 {
465 enum ieee80211_band band = ch->band;
466 u16 channel = ch->hw_value;
467
468 if ((le16_to_cpu(ctx->staging.channel) == channel) &&
469 (priv->band == band))
470 return;
471
472 ctx->staging.channel = cpu_to_le16(channel);
473 if (band == IEEE80211_BAND_5GHZ)
474 ctx->staging.flags &= ~RXON_FLG_BAND_24G_MSK;
475 else
476 ctx->staging.flags |= RXON_FLG_BAND_24G_MSK;
477
478 priv->band = band;
479
480 IWL_DEBUG_INFO(priv, "Staging channel set to %d [%d]\n", channel, band);
481
482 }
483
484 void iwl_set_flags_for_band(struct iwl_priv *priv,
485 struct iwl_rxon_context *ctx,
486 enum ieee80211_band band,
487 struct ieee80211_vif *vif)
488 {
489 if (band == IEEE80211_BAND_5GHZ) {
490 ctx->staging.flags &=
491 ~(RXON_FLG_BAND_24G_MSK | RXON_FLG_AUTO_DETECT_MSK
492 | RXON_FLG_CCK_MSK);
493 ctx->staging.flags |= RXON_FLG_SHORT_SLOT_MSK;
494 } else {
495 /* Copied from iwl_post_associate() */
496 if (vif && vif->bss_conf.use_short_slot)
497 ctx->staging.flags |= RXON_FLG_SHORT_SLOT_MSK;
498 else
499 ctx->staging.flags &= ~RXON_FLG_SHORT_SLOT_MSK;
500
501 ctx->staging.flags |= RXON_FLG_BAND_24G_MSK;
502 ctx->staging.flags |= RXON_FLG_AUTO_DETECT_MSK;
503 ctx->staging.flags &= ~RXON_FLG_CCK_MSK;
504 }
505 }
506
507 /*
508 * initialize rxon structure with default values from eeprom
509 */
510 void iwl_connection_init_rx_config(struct iwl_priv *priv,
511 struct iwl_rxon_context *ctx)
512 {
513 const struct iwl_channel_info *ch_info;
514
515 memset(&ctx->staging, 0, sizeof(ctx->staging));
516
517 if (!ctx->vif) {
518 ctx->staging.dev_type = ctx->unused_devtype;
519 } else switch (ctx->vif->type) {
520 case NL80211_IFTYPE_AP:
521 ctx->staging.dev_type = ctx->ap_devtype;
522 break;
523
524 case NL80211_IFTYPE_STATION:
525 ctx->staging.dev_type = ctx->station_devtype;
526 ctx->staging.filter_flags = RXON_FILTER_ACCEPT_GRP_MSK;
527 break;
528
529 case NL80211_IFTYPE_ADHOC:
530 ctx->staging.dev_type = ctx->ibss_devtype;
531 ctx->staging.flags = RXON_FLG_SHORT_PREAMBLE_MSK;
532 ctx->staging.filter_flags = RXON_FILTER_BCON_AWARE_MSK |
533 RXON_FILTER_ACCEPT_GRP_MSK;
534 break;
535
536 default:
537 IWL_ERR(priv, "Unsupported interface type %d\n",
538 ctx->vif->type);
539 break;
540 }
541
542 #if 0
543 /* TODO: Figure out when short_preamble would be set and cache from
544 * that */
545 if (!hw_to_local(priv->hw)->short_preamble)
546 ctx->staging.flags &= ~RXON_FLG_SHORT_PREAMBLE_MSK;
547 else
548 ctx->staging.flags |= RXON_FLG_SHORT_PREAMBLE_MSK;
549 #endif
550
551 ch_info = iwl_get_channel_info(priv, priv->band,
552 le16_to_cpu(ctx->active.channel));
553
554 if (!ch_info)
555 ch_info = &priv->channel_info[0];
556
557 ctx->staging.channel = cpu_to_le16(ch_info->channel);
558 priv->band = ch_info->band;
559
560 iwl_set_flags_for_band(priv, ctx, priv->band, ctx->vif);
561
562 ctx->staging.ofdm_basic_rates =
563 (IWL_OFDM_RATES_MASK >> IWL_FIRST_OFDM_RATE) & 0xFF;
564 ctx->staging.cck_basic_rates =
565 (IWL_CCK_RATES_MASK >> IWL_FIRST_CCK_RATE) & 0xF;
566
567 /* clear both MIX and PURE40 mode flag */
568 ctx->staging.flags &= ~(RXON_FLG_CHANNEL_MODE_MIXED |
569 RXON_FLG_CHANNEL_MODE_PURE_40);
570 if (ctx->vif)
571 memcpy(ctx->staging.node_addr, ctx->vif->addr, ETH_ALEN);
572
573 ctx->staging.ofdm_ht_single_stream_basic_rates = 0xff;
574 ctx->staging.ofdm_ht_dual_stream_basic_rates = 0xff;
575 ctx->staging.ofdm_ht_triple_stream_basic_rates = 0xff;
576 }
577
578 void iwl_set_rate(struct iwl_priv *priv)
579 {
580 const struct ieee80211_supported_band *hw = NULL;
581 struct ieee80211_rate *rate;
582 struct iwl_rxon_context *ctx;
583 int i;
584
585 hw = iwl_get_hw_mode(priv, priv->band);
586 if (!hw) {
587 IWL_ERR(priv, "Failed to set rate: unable to get hw mode\n");
588 return;
589 }
590
591 priv->active_rate = 0;
592
593 for (i = 0; i < hw->n_bitrates; i++) {
594 rate = &(hw->bitrates[i]);
595 if (rate->hw_value < IWL_RATE_COUNT_LEGACY)
596 priv->active_rate |= (1 << rate->hw_value);
597 }
598
599 IWL_DEBUG_RATE(priv, "Set active_rate = %0x\n", priv->active_rate);
600
601 for_each_context(priv, ctx) {
602 ctx->staging.cck_basic_rates =
603 (IWL_CCK_BASIC_RATES_MASK >> IWL_FIRST_CCK_RATE) & 0xF;
604
605 ctx->staging.ofdm_basic_rates =
606 (IWL_OFDM_BASIC_RATES_MASK >> IWL_FIRST_OFDM_RATE) & 0xFF;
607 }
608 }
609
610 void iwl_chswitch_done(struct iwl_priv *priv, bool is_success)
611 {
612 /*
613 * MULTI-FIXME
614 * See iwlagn_mac_channel_switch.
615 */
616 struct iwl_rxon_context *ctx = &priv->contexts[IWL_RXON_CTX_BSS];
617
618 if (test_bit(STATUS_EXIT_PENDING, &priv->status))
619 return;
620
621 if (test_and_clear_bit(STATUS_CHANNEL_SWITCH_PENDING, &priv->status))
622 ieee80211_chswitch_done(ctx->vif, is_success);
623 }
624
625 #ifdef CONFIG_IWLWIFI_DEBUG
626 void iwl_print_rx_config_cmd(struct iwl_priv *priv,
627 enum iwl_rxon_context_id ctxid)
628 {
629 struct iwl_rxon_context *ctx = &priv->contexts[ctxid];
630 struct iwl_rxon_cmd *rxon = &ctx->staging;
631
632 IWL_DEBUG_RADIO(priv, "RX CONFIG:\n");
633 iwl_print_hex_dump(priv, IWL_DL_RADIO, (u8 *) rxon, sizeof(*rxon));
634 IWL_DEBUG_RADIO(priv, "u16 channel: 0x%x\n", le16_to_cpu(rxon->channel));
635 IWL_DEBUG_RADIO(priv, "u32 flags: 0x%08X\n", le32_to_cpu(rxon->flags));
636 IWL_DEBUG_RADIO(priv, "u32 filter_flags: 0x%08x\n",
637 le32_to_cpu(rxon->filter_flags));
638 IWL_DEBUG_RADIO(priv, "u8 dev_type: 0x%x\n", rxon->dev_type);
639 IWL_DEBUG_RADIO(priv, "u8 ofdm_basic_rates: 0x%02x\n",
640 rxon->ofdm_basic_rates);
641 IWL_DEBUG_RADIO(priv, "u8 cck_basic_rates: 0x%02x\n", rxon->cck_basic_rates);
642 IWL_DEBUG_RADIO(priv, "u8[6] node_addr: %pM\n", rxon->node_addr);
643 IWL_DEBUG_RADIO(priv, "u8[6] bssid_addr: %pM\n", rxon->bssid_addr);
644 IWL_DEBUG_RADIO(priv, "u16 assoc_id: 0x%x\n", le16_to_cpu(rxon->assoc_id));
645 }
646 #endif
647
648 void iwlagn_fw_error(struct iwl_priv *priv, bool ondemand)
649 {
650 unsigned int reload_msec;
651 unsigned long reload_jiffies;
652
653 #ifdef CONFIG_IWLWIFI_DEBUG
654 if (iwl_have_debug_level(IWL_DL_FW_ERRORS))
655 iwl_print_rx_config_cmd(priv, IWL_RXON_CTX_BSS);
656 #endif
657
658 /* uCode is no longer loaded. */
659 priv->ucode_loaded = false;
660
661 /* Set the FW error flag -- cleared on iwl_down */
662 set_bit(STATUS_FW_ERROR, &priv->shrd->status);
663
664 /* Cancel currently queued command. */
665 clear_bit(STATUS_HCMD_ACTIVE, &priv->shrd->status);
666
667 iwl_abort_notification_waits(&priv->notif_wait);
668
669 /* Keep the restart process from trying to send host
670 * commands by clearing the ready bit */
671 clear_bit(STATUS_READY, &priv->status);
672
673 wake_up(&trans(priv)->wait_command_queue);
674
675 if (!ondemand) {
676 /*
677 * If firmware keep reloading, then it indicate something
678 * serious wrong and firmware having problem to recover
679 * from it. Instead of keep trying which will fill the syslog
680 * and hang the system, let's just stop it
681 */
682 reload_jiffies = jiffies;
683 reload_msec = jiffies_to_msecs((long) reload_jiffies -
684 (long) priv->reload_jiffies);
685 priv->reload_jiffies = reload_jiffies;
686 if (reload_msec <= IWL_MIN_RELOAD_DURATION) {
687 priv->reload_count++;
688 if (priv->reload_count >= IWL_MAX_CONTINUE_RELOAD_CNT) {
689 IWL_ERR(priv, "BUG_ON, Stop restarting\n");
690 return;
691 }
692 } else
693 priv->reload_count = 0;
694 }
695
696 if (!test_bit(STATUS_EXIT_PENDING, &priv->status)) {
697 if (iwlagn_mod_params.restart_fw) {
698 IWL_DEBUG_FW_ERRORS(priv,
699 "Restarting adapter due to uCode error.\n");
700 queue_work(priv->workqueue, &priv->restart);
701 } else
702 IWL_DEBUG_FW_ERRORS(priv,
703 "Detected FW error, but not restarting\n");
704 }
705 }
706
707 int iwl_set_tx_power(struct iwl_priv *priv, s8 tx_power, bool force)
708 {
709 int ret;
710 s8 prev_tx_power;
711 bool defer;
712 struct iwl_rxon_context *ctx = &priv->contexts[IWL_RXON_CTX_BSS];
713
714 lockdep_assert_held(&priv->mutex);
715
716 if (priv->tx_power_user_lmt == tx_power && !force)
717 return 0;
718
719 if (tx_power < IWLAGN_TX_POWER_TARGET_POWER_MIN) {
720 IWL_WARN(priv,
721 "Requested user TXPOWER %d below lower limit %d.\n",
722 tx_power,
723 IWLAGN_TX_POWER_TARGET_POWER_MIN);
724 return -EINVAL;
725 }
726
727 if (tx_power > priv->tx_power_device_lmt) {
728 IWL_WARN(priv,
729 "Requested user TXPOWER %d above upper limit %d.\n",
730 tx_power, priv->tx_power_device_lmt);
731 return -EINVAL;
732 }
733
734 if (!iwl_is_ready_rf(priv))
735 return -EIO;
736
737 /* scan complete and commit_rxon use tx_power_next value,
738 * it always need to be updated for newest request */
739 priv->tx_power_next = tx_power;
740
741 /* do not set tx power when scanning or channel changing */
742 defer = test_bit(STATUS_SCANNING, &priv->status) ||
743 memcmp(&ctx->active, &ctx->staging, sizeof(ctx->staging));
744 if (defer && !force) {
745 IWL_DEBUG_INFO(priv, "Deferring tx power set\n");
746 return 0;
747 }
748
749 prev_tx_power = priv->tx_power_user_lmt;
750 priv->tx_power_user_lmt = tx_power;
751
752 ret = iwlagn_send_tx_power(priv);
753
754 /* if fail to set tx_power, restore the orig. tx power */
755 if (ret) {
756 priv->tx_power_user_lmt = prev_tx_power;
757 priv->tx_power_next = prev_tx_power;
758 }
759 return ret;
760 }
761
762 void iwl_send_bt_config(struct iwl_priv *priv)
763 {
764 struct iwl_bt_cmd bt_cmd = {
765 .lead_time = BT_LEAD_TIME_DEF,
766 .max_kill = BT_MAX_KILL_DEF,
767 .kill_ack_mask = 0,
768 .kill_cts_mask = 0,
769 };
770
771 if (!iwlagn_mod_params.bt_coex_active)
772 bt_cmd.flags = BT_COEX_DISABLE;
773 else
774 bt_cmd.flags = BT_COEX_ENABLE;
775
776 priv->bt_enable_flag = bt_cmd.flags;
777 IWL_DEBUG_INFO(priv, "BT coex %s\n",
778 (bt_cmd.flags == BT_COEX_DISABLE) ? "disable" : "active");
779
780 if (iwl_dvm_send_cmd_pdu(priv, REPLY_BT_CONFIG,
781 CMD_SYNC, sizeof(struct iwl_bt_cmd), &bt_cmd))
782 IWL_ERR(priv, "failed to send BT Coex Config\n");
783 }
784
785 int iwl_send_statistics_request(struct iwl_priv *priv, u8 flags, bool clear)
786 {
787 struct iwl_statistics_cmd statistics_cmd = {
788 .configuration_flags =
789 clear ? IWL_STATS_CONF_CLEAR_STATS : 0,
790 };
791
792 if (flags & CMD_ASYNC)
793 return iwl_dvm_send_cmd_pdu(priv, REPLY_STATISTICS_CMD,
794 CMD_ASYNC,
795 sizeof(struct iwl_statistics_cmd),
796 &statistics_cmd);
797 else
798 return iwl_dvm_send_cmd_pdu(priv, REPLY_STATISTICS_CMD,
799 CMD_SYNC,
800 sizeof(struct iwl_statistics_cmd),
801 &statistics_cmd);
802 }
803
804
805
806
807 #ifdef CONFIG_IWLWIFI_DEBUGFS
808
809 #define IWL_TRAFFIC_DUMP_SIZE (IWL_TRAFFIC_ENTRY_SIZE * IWL_TRAFFIC_ENTRIES)
810
811 void iwl_reset_traffic_log(struct iwl_priv *priv)
812 {
813 priv->tx_traffic_idx = 0;
814 priv->rx_traffic_idx = 0;
815 if (priv->tx_traffic)
816 memset(priv->tx_traffic, 0, IWL_TRAFFIC_DUMP_SIZE);
817 if (priv->rx_traffic)
818 memset(priv->rx_traffic, 0, IWL_TRAFFIC_DUMP_SIZE);
819 }
820
821 int iwl_alloc_traffic_mem(struct iwl_priv *priv)
822 {
823 u32 traffic_size = IWL_TRAFFIC_DUMP_SIZE;
824
825 if (iwl_have_debug_level(IWL_DL_TX)) {
826 if (!priv->tx_traffic) {
827 priv->tx_traffic =
828 kzalloc(traffic_size, GFP_KERNEL);
829 if (!priv->tx_traffic)
830 return -ENOMEM;
831 }
832 }
833 if (iwl_have_debug_level(IWL_DL_RX)) {
834 if (!priv->rx_traffic) {
835 priv->rx_traffic =
836 kzalloc(traffic_size, GFP_KERNEL);
837 if (!priv->rx_traffic)
838 return -ENOMEM;
839 }
840 }
841 iwl_reset_traffic_log(priv);
842 return 0;
843 }
844
845 void iwl_free_traffic_mem(struct iwl_priv *priv)
846 {
847 kfree(priv->tx_traffic);
848 priv->tx_traffic = NULL;
849
850 kfree(priv->rx_traffic);
851 priv->rx_traffic = NULL;
852 }
853
854 void iwl_dbg_log_tx_data_frame(struct iwl_priv *priv,
855 u16 length, struct ieee80211_hdr *header)
856 {
857 __le16 fc;
858 u16 len;
859
860 if (likely(!iwl_have_debug_level(IWL_DL_TX)))
861 return;
862
863 if (!priv->tx_traffic)
864 return;
865
866 fc = header->frame_control;
867 if (ieee80211_is_data(fc)) {
868 len = (length > IWL_TRAFFIC_ENTRY_SIZE)
869 ? IWL_TRAFFIC_ENTRY_SIZE : length;
870 memcpy((priv->tx_traffic +
871 (priv->tx_traffic_idx * IWL_TRAFFIC_ENTRY_SIZE)),
872 header, len);
873 priv->tx_traffic_idx =
874 (priv->tx_traffic_idx + 1) % IWL_TRAFFIC_ENTRIES;
875 }
876 }
877
878 void iwl_dbg_log_rx_data_frame(struct iwl_priv *priv,
879 u16 length, struct ieee80211_hdr *header)
880 {
881 __le16 fc;
882 u16 len;
883
884 if (likely(!iwl_have_debug_level(IWL_DL_RX)))
885 return;
886
887 if (!priv->rx_traffic)
888 return;
889
890 fc = header->frame_control;
891 if (ieee80211_is_data(fc)) {
892 len = (length > IWL_TRAFFIC_ENTRY_SIZE)
893 ? IWL_TRAFFIC_ENTRY_SIZE : length;
894 memcpy((priv->rx_traffic +
895 (priv->rx_traffic_idx * IWL_TRAFFIC_ENTRY_SIZE)),
896 header, len);
897 priv->rx_traffic_idx =
898 (priv->rx_traffic_idx + 1) % IWL_TRAFFIC_ENTRIES;
899 }
900 }
901
902 const char *get_mgmt_string(int cmd)
903 {
904 switch (cmd) {
905 IWL_CMD(MANAGEMENT_ASSOC_REQ);
906 IWL_CMD(MANAGEMENT_ASSOC_RESP);
907 IWL_CMD(MANAGEMENT_REASSOC_REQ);
908 IWL_CMD(MANAGEMENT_REASSOC_RESP);
909 IWL_CMD(MANAGEMENT_PROBE_REQ);
910 IWL_CMD(MANAGEMENT_PROBE_RESP);
911 IWL_CMD(MANAGEMENT_BEACON);
912 IWL_CMD(MANAGEMENT_ATIM);
913 IWL_CMD(MANAGEMENT_DISASSOC);
914 IWL_CMD(MANAGEMENT_AUTH);
915 IWL_CMD(MANAGEMENT_DEAUTH);
916 IWL_CMD(MANAGEMENT_ACTION);
917 default:
918 return "UNKNOWN";
919
920 }
921 }
922
923 const char *get_ctrl_string(int cmd)
924 {
925 switch (cmd) {
926 IWL_CMD(CONTROL_BACK_REQ);
927 IWL_CMD(CONTROL_BACK);
928 IWL_CMD(CONTROL_PSPOLL);
929 IWL_CMD(CONTROL_RTS);
930 IWL_CMD(CONTROL_CTS);
931 IWL_CMD(CONTROL_ACK);
932 IWL_CMD(CONTROL_CFEND);
933 IWL_CMD(CONTROL_CFENDACK);
934 default:
935 return "UNKNOWN";
936
937 }
938 }
939
940 void iwl_clear_traffic_stats(struct iwl_priv *priv)
941 {
942 memset(&priv->tx_stats, 0, sizeof(struct traffic_stats));
943 memset(&priv->rx_stats, 0, sizeof(struct traffic_stats));
944 }
945
946 /*
947 * if CONFIG_IWLWIFI_DEBUGFS defined, iwl_update_stats function will
948 * record all the MGMT, CTRL and DATA pkt for both TX and Rx pass.
949 * Use debugFs to display the rx/rx_statistics
950 * if CONFIG_IWLWIFI_DEBUGFS not being defined, then no MGMT and CTRL
951 * information will be recorded, but DATA pkt still will be recorded
952 * for the reason of iwl_led.c need to control the led blinking based on
953 * number of tx and rx data.
954 *
955 */
956 void iwl_update_stats(struct iwl_priv *priv, bool is_tx, __le16 fc, u16 len)
957 {
958 struct traffic_stats *stats;
959
960 if (is_tx)
961 stats = &priv->tx_stats;
962 else
963 stats = &priv->rx_stats;
964
965 if (ieee80211_is_mgmt(fc)) {
966 switch (fc & cpu_to_le16(IEEE80211_FCTL_STYPE)) {
967 case cpu_to_le16(IEEE80211_STYPE_ASSOC_REQ):
968 stats->mgmt[MANAGEMENT_ASSOC_REQ]++;
969 break;
970 case cpu_to_le16(IEEE80211_STYPE_ASSOC_RESP):
971 stats->mgmt[MANAGEMENT_ASSOC_RESP]++;
972 break;
973 case cpu_to_le16(IEEE80211_STYPE_REASSOC_REQ):
974 stats->mgmt[MANAGEMENT_REASSOC_REQ]++;
975 break;
976 case cpu_to_le16(IEEE80211_STYPE_REASSOC_RESP):
977 stats->mgmt[MANAGEMENT_REASSOC_RESP]++;
978 break;
979 case cpu_to_le16(IEEE80211_STYPE_PROBE_REQ):
980 stats->mgmt[MANAGEMENT_PROBE_REQ]++;
981 break;
982 case cpu_to_le16(IEEE80211_STYPE_PROBE_RESP):
983 stats->mgmt[MANAGEMENT_PROBE_RESP]++;
984 break;
985 case cpu_to_le16(IEEE80211_STYPE_BEACON):
986 stats->mgmt[MANAGEMENT_BEACON]++;
987 break;
988 case cpu_to_le16(IEEE80211_STYPE_ATIM):
989 stats->mgmt[MANAGEMENT_ATIM]++;
990 break;
991 case cpu_to_le16(IEEE80211_STYPE_DISASSOC):
992 stats->mgmt[MANAGEMENT_DISASSOC]++;
993 break;
994 case cpu_to_le16(IEEE80211_STYPE_AUTH):
995 stats->mgmt[MANAGEMENT_AUTH]++;
996 break;
997 case cpu_to_le16(IEEE80211_STYPE_DEAUTH):
998 stats->mgmt[MANAGEMENT_DEAUTH]++;
999 break;
1000 case cpu_to_le16(IEEE80211_STYPE_ACTION):
1001 stats->mgmt[MANAGEMENT_ACTION]++;
1002 break;
1003 }
1004 } else if (ieee80211_is_ctl(fc)) {
1005 switch (fc & cpu_to_le16(IEEE80211_FCTL_STYPE)) {
1006 case cpu_to_le16(IEEE80211_STYPE_BACK_REQ):
1007 stats->ctrl[CONTROL_BACK_REQ]++;
1008 break;
1009 case cpu_to_le16(IEEE80211_STYPE_BACK):
1010 stats->ctrl[CONTROL_BACK]++;
1011 break;
1012 case cpu_to_le16(IEEE80211_STYPE_PSPOLL):
1013 stats->ctrl[CONTROL_PSPOLL]++;
1014 break;
1015 case cpu_to_le16(IEEE80211_STYPE_RTS):
1016 stats->ctrl[CONTROL_RTS]++;
1017 break;
1018 case cpu_to_le16(IEEE80211_STYPE_CTS):
1019 stats->ctrl[CONTROL_CTS]++;
1020 break;
1021 case cpu_to_le16(IEEE80211_STYPE_ACK):
1022 stats->ctrl[CONTROL_ACK]++;
1023 break;
1024 case cpu_to_le16(IEEE80211_STYPE_CFEND):
1025 stats->ctrl[CONTROL_CFEND]++;
1026 break;
1027 case cpu_to_le16(IEEE80211_STYPE_CFENDACK):
1028 stats->ctrl[CONTROL_CFENDACK]++;
1029 break;
1030 }
1031 } else {
1032 /* data */
1033 stats->data_cnt++;
1034 stats->data_bytes += len;
1035 }
1036 }
1037 #endif
1038
1039 static void iwl_force_rf_reset(struct iwl_priv *priv)
1040 {
1041 if (test_bit(STATUS_EXIT_PENDING, &priv->status))
1042 return;
1043
1044 if (!iwl_is_any_associated(priv)) {
1045 IWL_DEBUG_SCAN(priv, "force reset rejected: not associated\n");
1046 return;
1047 }
1048 /*
1049 * There is no easy and better way to force reset the radio,
1050 * the only known method is switching channel which will force to
1051 * reset and tune the radio.
1052 * Use internal short scan (single channel) operation to should
1053 * achieve this objective.
1054 * Driver should reset the radio when number of consecutive missed
1055 * beacon, or any other uCode error condition detected.
1056 */
1057 IWL_DEBUG_INFO(priv, "perform radio reset.\n");
1058 iwl_internal_short_hw_scan(priv);
1059 }
1060
1061
1062 int iwl_force_reset(struct iwl_priv *priv, int mode, bool external)
1063 {
1064 struct iwl_force_reset *force_reset;
1065
1066 if (test_bit(STATUS_EXIT_PENDING, &priv->status))
1067 return -EINVAL;
1068
1069 if (mode >= IWL_MAX_FORCE_RESET) {
1070 IWL_DEBUG_INFO(priv, "invalid reset request.\n");
1071 return -EINVAL;
1072 }
1073 force_reset = &priv->force_reset[mode];
1074 force_reset->reset_request_count++;
1075 if (!external) {
1076 if (force_reset->last_force_reset_jiffies &&
1077 time_after(force_reset->last_force_reset_jiffies +
1078 force_reset->reset_duration, jiffies)) {
1079 IWL_DEBUG_INFO(priv, "force reset rejected\n");
1080 force_reset->reset_reject_count++;
1081 return -EAGAIN;
1082 }
1083 }
1084 force_reset->reset_success_count++;
1085 force_reset->last_force_reset_jiffies = jiffies;
1086 IWL_DEBUG_INFO(priv, "perform force reset (%d)\n", mode);
1087 switch (mode) {
1088 case IWL_RF_RESET:
1089 iwl_force_rf_reset(priv);
1090 break;
1091 case IWL_FW_RESET:
1092 /*
1093 * if the request is from external(ex: debugfs),
1094 * then always perform the request in regardless the module
1095 * parameter setting
1096 * if the request is from internal (uCode error or driver
1097 * detect failure), then fw_restart module parameter
1098 * need to be check before performing firmware reload
1099 */
1100 if (!external && !iwlagn_mod_params.restart_fw) {
1101 IWL_DEBUG_INFO(priv, "Cancel firmware reload based on "
1102 "module parameter setting\n");
1103 break;
1104 }
1105 IWL_ERR(priv, "On demand firmware reload\n");
1106 iwlagn_fw_error(priv, true);
1107 break;
1108 }
1109 return 0;
1110 }
1111
1112
1113 int iwl_cmd_echo_test(struct iwl_priv *priv)
1114 {
1115 int ret;
1116 struct iwl_host_cmd cmd = {
1117 .id = REPLY_ECHO,
1118 .len = { 0 },
1119 .flags = CMD_SYNC,
1120 };
1121
1122 ret = iwl_dvm_send_cmd(priv, &cmd);
1123 if (ret)
1124 IWL_ERR(priv, "echo testing fail: 0X%x\n", ret);
1125 else
1126 IWL_DEBUG_INFO(priv, "echo testing pass\n");
1127 return ret;
1128 }
1129
1130 static inline int iwl_check_stuck_queue(struct iwl_priv *priv, int txq)
1131 {
1132 if (iwl_trans_check_stuck_queue(trans(priv), txq)) {
1133 int ret;
1134 ret = iwl_force_reset(priv, IWL_FW_RESET, false);
1135 return (ret == -EAGAIN) ? 0 : 1;
1136 }
1137 return 0;
1138 }
1139
1140 /*
1141 * Making watchdog tick be a quarter of timeout assure we will
1142 * discover the queue hung between timeout and 1.25*timeout
1143 */
1144 #define IWL_WD_TICK(timeout) ((timeout) / 4)
1145
1146 /*
1147 * Watchdog timer callback, we check each tx queue for stuck, if if hung
1148 * we reset the firmware. If everything is fine just rearm the timer.
1149 */
1150 void iwl_bg_watchdog(unsigned long data)
1151 {
1152 struct iwl_priv *priv = (struct iwl_priv *)data;
1153 int cnt;
1154 unsigned long timeout;
1155
1156 if (test_bit(STATUS_EXIT_PENDING, &priv->status))
1157 return;
1158
1159 if (iwl_is_rfkill(priv))
1160 return;
1161
1162 timeout = hw_params(priv).wd_timeout;
1163 if (timeout == 0)
1164 return;
1165
1166 /* monitor and check for stuck queues */
1167 for (cnt = 0; cnt < cfg(priv)->base_params->num_of_queues; cnt++)
1168 if (iwl_check_stuck_queue(priv, cnt))
1169 return;
1170
1171 mod_timer(&priv->watchdog, jiffies +
1172 msecs_to_jiffies(IWL_WD_TICK(timeout)));
1173 }
1174
1175 void iwl_setup_watchdog(struct iwl_priv *priv)
1176 {
1177 unsigned int timeout = hw_params(priv).wd_timeout;
1178
1179 if (!iwlagn_mod_params.wd_disable) {
1180 /* use system default */
1181 if (timeout && !cfg(priv)->base_params->wd_disable)
1182 mod_timer(&priv->watchdog,
1183 jiffies +
1184 msecs_to_jiffies(IWL_WD_TICK(timeout)));
1185 else
1186 del_timer(&priv->watchdog);
1187 } else {
1188 /* module parameter overwrite default configuration */
1189 if (timeout && iwlagn_mod_params.wd_disable == 2)
1190 mod_timer(&priv->watchdog,
1191 jiffies +
1192 msecs_to_jiffies(IWL_WD_TICK(timeout)));
1193 else
1194 del_timer(&priv->watchdog);
1195 }
1196 }
1197
1198 /**
1199 * iwl_beacon_time_mask_low - mask of lower 32 bit of beacon time
1200 * @priv -- pointer to iwl_priv data structure
1201 * @tsf_bits -- number of bits need to shift for masking)
1202 */
1203 static inline u32 iwl_beacon_time_mask_low(struct iwl_priv *priv,
1204 u16 tsf_bits)
1205 {
1206 return (1 << tsf_bits) - 1;
1207 }
1208
1209 /**
1210 * iwl_beacon_time_mask_high - mask of higher 32 bit of beacon time
1211 * @priv -- pointer to iwl_priv data structure
1212 * @tsf_bits -- number of bits need to shift for masking)
1213 */
1214 static inline u32 iwl_beacon_time_mask_high(struct iwl_priv *priv,
1215 u16 tsf_bits)
1216 {
1217 return ((1 << (32 - tsf_bits)) - 1) << tsf_bits;
1218 }
1219
1220 /*
1221 * extended beacon time format
1222 * time in usec will be changed into a 32-bit value in extended:internal format
1223 * the extended part is the beacon counts
1224 * the internal part is the time in usec within one beacon interval
1225 */
1226 u32 iwl_usecs_to_beacons(struct iwl_priv *priv, u32 usec, u32 beacon_interval)
1227 {
1228 u32 quot;
1229 u32 rem;
1230 u32 interval = beacon_interval * TIME_UNIT;
1231
1232 if (!interval || !usec)
1233 return 0;
1234
1235 quot = (usec / interval) &
1236 (iwl_beacon_time_mask_high(priv, IWLAGN_EXT_BEACON_TIME_POS) >>
1237 IWLAGN_EXT_BEACON_TIME_POS);
1238 rem = (usec % interval) & iwl_beacon_time_mask_low(priv,
1239 IWLAGN_EXT_BEACON_TIME_POS);
1240
1241 return (quot << IWLAGN_EXT_BEACON_TIME_POS) + rem;
1242 }
1243
1244 /* base is usually what we get from ucode with each received frame,
1245 * the same as HW timer counter counting down
1246 */
1247 __le32 iwl_add_beacon_time(struct iwl_priv *priv, u32 base,
1248 u32 addon, u32 beacon_interval)
1249 {
1250 u32 base_low = base & iwl_beacon_time_mask_low(priv,
1251 IWLAGN_EXT_BEACON_TIME_POS);
1252 u32 addon_low = addon & iwl_beacon_time_mask_low(priv,
1253 IWLAGN_EXT_BEACON_TIME_POS);
1254 u32 interval = beacon_interval * TIME_UNIT;
1255 u32 res = (base & iwl_beacon_time_mask_high(priv,
1256 IWLAGN_EXT_BEACON_TIME_POS)) +
1257 (addon & iwl_beacon_time_mask_high(priv,
1258 IWLAGN_EXT_BEACON_TIME_POS));
1259
1260 if (base_low > addon_low)
1261 res += base_low - addon_low;
1262 else if (base_low < addon_low) {
1263 res += interval + base_low - addon_low;
1264 res += (1 << IWLAGN_EXT_BEACON_TIME_POS);
1265 } else
1266 res += (1 << IWLAGN_EXT_BEACON_TIME_POS);
1267
1268 return cpu_to_le32(res);
1269 }
1270
1271 void iwl_set_hw_rfkill_state(struct iwl_op_mode *op_mode, bool state)
1272 {
1273 struct iwl_priv *priv = IWL_OP_MODE_GET_DVM(op_mode);
1274
1275 if (state)
1276 set_bit(STATUS_RF_KILL_HW, &priv->status);
1277 else
1278 clear_bit(STATUS_RF_KILL_HW, &priv->status);
1279
1280 wiphy_rfkill_set_hw_state(priv->hw->wiphy, state);
1281 }
1282
1283 void iwl_free_skb(struct iwl_op_mode *op_mode, struct sk_buff *skb)
1284 {
1285 struct ieee80211_tx_info *info;
1286
1287 info = IEEE80211_SKB_CB(skb);
1288 kmem_cache_free(iwl_tx_cmd_pool, (info->driver_data[1]));
1289 dev_kfree_skb_any(skb);
1290 }
kernel source for telekom puls (alcatel/mediatek)