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iwlwifi: Added debugfs calib disabled write
[deliverable/linux.git] / drivers / net / wireless / iwlwifi / iwl-agn-rxon.c
CommitLineData
2295c66b
JB		 1/******************************************************************************
2 *
fb4961db 3 * Copyright(c) 2003 - 2012 Intel Corporation. All rights reserved.
2295c66b
JB		 4 *
5 * This program is free software; you can redistribute it and/or modify it
6 * under the terms of version 2 of the GNU General Public License as
7 * published by the Free Software Foundation.
8 *
9 * This program is distributed in the hope that it will be useful, but WITHOUT
10 * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
11 * FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License for
12 * more details.
13 *
14 * You should have received a copy of the GNU General Public License along with
15 * this program; if not, write to the Free Software Foundation, Inc.,
16 * 51 Franklin Street, Fifth Floor, Boston, MA 02110, USA
17 *
18 * The full GNU General Public License is included in this distribution in the
19 * file called LICENSE.
20 *
21 * Contact Information:
22 * Intel Linux Wireless <ilw@linux.intel.com>
23 * Intel Corporation, 5200 N.E. Elam Young Parkway, Hillsboro, OR 97124-6497
24 *
25 *****************************************************************************/
26
55620921 27#include <linux/etherdevice.h>
2295c66b
JB		 28#include "iwl-dev.h"
29#include "iwl-agn.h"
2295c66b
JB		 30#include "iwl-core.h"
31#include "iwl-agn-calib.h"
bdfbf092 32#include "iwl-trans.h"
2295c66b 33
47042ac2
MV		 34/*
35 * initialize rxon structure with default values from eeprom
36 */
37void iwl_connection_init_rx_config(struct iwl_priv *priv,
38 struct iwl_rxon_context *ctx)
39{
40 const struct iwl_channel_info *ch_info;
41
42 memset(&ctx->staging, 0, sizeof(ctx->staging));
43
44 if (!ctx->vif) {
45 ctx->staging.dev_type = ctx->unused_devtype;
46 } else
47 switch (ctx->vif->type) {
48 case NL80211_IFTYPE_AP:
49 ctx->staging.dev_type = ctx->ap_devtype;
50 break;
51
52 case NL80211_IFTYPE_STATION:
53 ctx->staging.dev_type = ctx->station_devtype;
54 ctx->staging.filter_flags = RXON_FILTER_ACCEPT_GRP_MSK;
55 break;
56
57 case NL80211_IFTYPE_ADHOC:
58 ctx->staging.dev_type = ctx->ibss_devtype;
59 ctx->staging.flags = RXON_FLG_SHORT_PREAMBLE_MSK;
60 ctx->staging.filter_flags = RXON_FILTER_BCON_AWARE_MSK |
61 RXON_FILTER_ACCEPT_GRP_MSK;
62 break;
63
64 default:
65 IWL_ERR(priv, "Unsupported interface type %d\n",
66 ctx->vif->type);
67 break;
68 }
69
70#if 0
71 /* TODO: Figure out when short_preamble would be set and cache from
72 * that */
73 if (!hw_to_local(priv->hw)->short_preamble)
74 ctx->staging.flags &= ~RXON_FLG_SHORT_PREAMBLE_MSK;
75 else
76 ctx->staging.flags |= RXON_FLG_SHORT_PREAMBLE_MSK;
77#endif
78
79 ch_info = iwl_get_channel_info(priv, priv->band,
80 le16_to_cpu(ctx->active.channel));
81
82 if (!ch_info)
83 ch_info = &priv->channel_info[0];
84
85 ctx->staging.channel = cpu_to_le16(ch_info->channel);
86 priv->band = ch_info->band;
87
88 iwl_set_flags_for_band(priv, ctx, priv->band, ctx->vif);
89
90 ctx->staging.ofdm_basic_rates =
91 (IWL_OFDM_RATES_MASK >> IWL_FIRST_OFDM_RATE) & 0xFF;
92 ctx->staging.cck_basic_rates =
93 (IWL_CCK_RATES_MASK >> IWL_FIRST_CCK_RATE) & 0xF;
94
95 /* clear both MIX and PURE40 mode flag */
96 ctx->staging.flags &= ~(RXON_FLG_CHANNEL_MODE_MIXED |
97 RXON_FLG_CHANNEL_MODE_PURE_40);
98 if (ctx->vif)
99 memcpy(ctx->staging.node_addr, ctx->vif->addr, ETH_ALEN);
100
101 ctx->staging.ofdm_ht_single_stream_basic_rates = 0xff;
102 ctx->staging.ofdm_ht_dual_stream_basic_rates = 0xff;
103 ctx->staging.ofdm_ht_triple_stream_basic_rates = 0xff;
104}
105
2295c66b
JB		 106static int iwlagn_disable_bss(struct iwl_priv *priv,
107 struct iwl_rxon_context *ctx,
108 struct iwl_rxon_cmd *send)
109{
110 __le32 old_filter = send->filter_flags;
111 int ret;
112
113 send->filter_flags &= ~RXON_FILTER_ASSOC_MSK;
e10a0533 114 ret = iwl_dvm_send_cmd_pdu(priv, ctx->rxon_cmd,
e419d62d 115 CMD_SYNC, sizeof(*send), send);
2295c66b
JB		 116
117 send->filter_flags = old_filter;
118
119 if (ret)
b36b110c
TP		 120 IWL_DEBUG_QUIET_RFKILL(priv,
121 "Error clearing ASSOC_MSK on BSS (%d)\n", ret);
2295c66b
JB		 122
123 return ret;
124}
125
126static int iwlagn_disable_pan(struct iwl_priv *priv,
127 struct iwl_rxon_context *ctx,
128 struct iwl_rxon_cmd *send)
129{
311dce71 130 struct iwl_notification_wait disable_wait;
2295c66b
JB		 131 __le32 old_filter = send->filter_flags;
132 u8 old_dev_type = send->dev_type;
133 int ret;
db662d47
JB		 134 static const u8 deactivate_cmd[] = {
135 REPLY_WIPAN_DEACTIVATION_COMPLETE
136 };
2295c66b 137
4bd14dd5 138 iwl_init_notification_wait(&priv->notif_wait, &disable_wait,
db662d47 139 deactivate_cmd, ARRAY_SIZE(deactivate_cmd),
4bd14dd5 140 NULL, NULL);
311dce71 141
2295c66b
JB		 142 send->filter_flags &= ~RXON_FILTER_ASSOC_MSK;
143 send->dev_type = RXON_DEV_TYPE_P2P;
e10a0533 144 ret = iwl_dvm_send_cmd_pdu(priv, ctx->rxon_cmd,
e419d62d 145 CMD_SYNC, sizeof(*send), send);
2295c66b
JB		 146
147 send->filter_flags = old_filter;
148 send->dev_type = old_dev_type;
149
311dce71 150 if (ret) {
2295c66b 151 IWL_ERR(priv, "Error disabling PAN (%d)\n", ret);
4bd14dd5 152 iwl_remove_notification(&priv->notif_wait, &disable_wait);
311dce71 153 } else {
4bd14dd5
JB		 154 ret = iwl_wait_notification(&priv->notif_wait,
155 &disable_wait, HZ);
a8674a1e 156 if (ret)
311dce71
JB		 157 IWL_ERR(priv, "Timed out waiting for PAN disable\n");
158 }
2295c66b
JB		 159
160 return ret;
161}
162
2b9253d2
JB		 163static int iwlagn_disconn_pan(struct iwl_priv *priv,
164 struct iwl_rxon_context *ctx,
165 struct iwl_rxon_cmd *send)
166{
167 __le32 old_filter = send->filter_flags;
168 int ret;
169
170 send->filter_flags &= ~RXON_FILTER_ASSOC_MSK;
e10a0533 171 ret = iwl_dvm_send_cmd_pdu(priv, ctx->rxon_cmd, CMD_SYNC,
e419d62d 172 sizeof(*send), send);
2b9253d2
JB		 173
174 send->filter_flags = old_filter;
175
176 return ret;
177}
178
50c1e9a9 179void iwlagn_update_qos(struct iwl_priv *priv, struct iwl_rxon_context *ctx)
f4115d46
SZ		 180{
181 int ret;
182
183 if (!ctx->is_active)
184 return;
185
186 ctx->qos_data.def_qos_parm.qos_flags = 0;
187
188 if (ctx->qos_data.qos_active)
189 ctx->qos_data.def_qos_parm.qos_flags |=
190 QOS_PARAM_FLG_UPDATE_EDCA_MSK;
191
192 if (ctx->ht.enabled)
193 ctx->qos_data.def_qos_parm.qos_flags |= QOS_PARAM_FLG_TGN_MSK;
194
0dcf50ca 195 IWL_DEBUG_INFO(priv, "send QoS cmd with Qos active=%d FLAGS=0x%X\n",
f4115d46
SZ		 196 ctx->qos_data.qos_active,
197 ctx->qos_data.def_qos_parm.qos_flags);
198
e10a0533 199 ret = iwl_dvm_send_cmd_pdu(priv, ctx->qos_cmd, CMD_SYNC,
f4115d46
SZ		 200 sizeof(struct iwl_qosparam_cmd),
201 &ctx->qos_data.def_qos_parm);
202 if (ret)
b36b110c 203 IWL_DEBUG_QUIET_RFKILL(priv, "Failed to update QoS\n");
f4115d46
SZ		 204}
205
50c1e9a9
DS		 206int iwlagn_update_beacon(struct iwl_priv *priv,
207 struct ieee80211_vif *vif)
bd50a8ab 208{
b1eea297 209 lockdep_assert_held(&priv->mutex);
bd50a8ab
JB		 210
211 dev_kfree_skb(priv->beacon_skb);
212 priv->beacon_skb = ieee80211_beacon_get(priv->hw, vif);
213 if (!priv->beacon_skb)
214 return -ENOMEM;
215 return iwlagn_send_beacon_cmd(priv);
216}
217
c3f6e9cf
WYG		 218static int iwlagn_send_rxon_assoc(struct iwl_priv *priv,
219 struct iwl_rxon_context *ctx)
220{
221 int ret = 0;
89e746b2 222 struct iwl_rxon_assoc_cmd rxon_assoc;
c3f6e9cf
WYG		 223 const struct iwl_rxon_cmd *rxon1 = &ctx->staging;
224 const struct iwl_rxon_cmd *rxon2 = &ctx->active;
225
226 if ((rxon1->flags == rxon2->flags) &&
227 (rxon1->filter_flags == rxon2->filter_flags) &&
228 (rxon1->cck_basic_rates == rxon2->cck_basic_rates) &&
229 (rxon1->ofdm_ht_single_stream_basic_rates ==
230 rxon2->ofdm_ht_single_stream_basic_rates) &&
231 (rxon1->ofdm_ht_dual_stream_basic_rates ==
232 rxon2->ofdm_ht_dual_stream_basic_rates) &&
233 (rxon1->ofdm_ht_triple_stream_basic_rates ==
234 rxon2->ofdm_ht_triple_stream_basic_rates) &&
235 (rxon1->acquisition_data == rxon2->acquisition_data) &&
236 (rxon1->rx_chain == rxon2->rx_chain) &&
237 (rxon1->ofdm_basic_rates == rxon2->ofdm_basic_rates)) {
238 IWL_DEBUG_INFO(priv, "Using current RXON_ASSOC. Not resending.\n");
239 return 0;
240 }
241
242 rxon_assoc.flags = ctx->staging.flags;
243 rxon_assoc.filter_flags = ctx->staging.filter_flags;
244 rxon_assoc.ofdm_basic_rates = ctx->staging.ofdm_basic_rates;
245 rxon_assoc.cck_basic_rates = ctx->staging.cck_basic_rates;
246 rxon_assoc.reserved1 = 0;
247 rxon_assoc.reserved2 = 0;
248 rxon_assoc.reserved3 = 0;
249 rxon_assoc.ofdm_ht_single_stream_basic_rates =
250 ctx->staging.ofdm_ht_single_stream_basic_rates;
251 rxon_assoc.ofdm_ht_dual_stream_basic_rates =
252 ctx->staging.ofdm_ht_dual_stream_basic_rates;
253 rxon_assoc.rx_chain_select_flags = ctx->staging.rx_chain;
254 rxon_assoc.ofdm_ht_triple_stream_basic_rates =
255 ctx->staging.ofdm_ht_triple_stream_basic_rates;
256 rxon_assoc.acquisition_data = ctx->staging.acquisition_data;
257
e10a0533 258 ret = iwl_dvm_send_cmd_pdu(priv, ctx->rxon_assoc_cmd,
e419d62d 259 CMD_ASYNC, sizeof(rxon_assoc), &rxon_assoc);
c3f6e9cf
WYG		 260 return ret;
261}
262
dff96c1e
MV		 263static u16 iwl_adjust_beacon_interval(u16 beacon_val, u16 max_beacon_val)
264{
265 u16 new_val;
266 u16 beacon_factor;
267
268 /*
269 * If mac80211 hasn't given us a beacon interval, program
270 * the default into the device (not checking this here
271 * would cause the adjustment below to return the maximum
272 * value, which may break PAN.)
273 */
274 if (!beacon_val)
275 return DEFAULT_BEACON_INTERVAL;
276
277 /*
278 * If the beacon interval we obtained from the peer
279 * is too large, we'll have to wake up more often
280 * (and in IBSS case, we'll beacon too much)
281 *
282 * For example, if max_beacon_val is 4096, and the
283 * requested beacon interval is 7000, we'll have to
284 * use 3500 to be able to wake up on the beacons.
285 *
286 * This could badly influence beacon detection stats.
287 */
288
289 beacon_factor = (beacon_val + max_beacon_val) / max_beacon_val;
290 new_val = beacon_val / beacon_factor;
291
292 if (!new_val)
293 new_val = max_beacon_val;
294
295 return new_val;
296}
297
298static int iwl_send_rxon_timing(struct iwl_priv *priv,
299 struct iwl_rxon_context *ctx)
300{
301 u64 tsf;
302 s32 interval_tm, rem;
303 struct ieee80211_conf *conf = NULL;
304 u16 beacon_int;
305 struct ieee80211_vif *vif = ctx->vif;
306
307 conf = &priv->hw->conf;
308
309 lockdep_assert_held(&priv->mutex);
310
311 memset(&ctx->timing, 0, sizeof(struct iwl_rxon_time_cmd));
312
313 ctx->timing.timestamp = cpu_to_le64(priv->timestamp);
314 ctx->timing.listen_interval = cpu_to_le16(conf->listen_interval);
315
316 beacon_int = vif ? vif->bss_conf.beacon_int : 0;
317
318 /*
319 * TODO: For IBSS we need to get atim_window from mac80211,
320 * for now just always use 0
321 */
322 ctx->timing.atim_window = 0;
323
324 if (ctx->ctxid == IWL_RXON_CTX_PAN &&
325 (!ctx->vif || ctx->vif->type != NL80211_IFTYPE_STATION) &&
326 iwl_is_associated(priv, IWL_RXON_CTX_BSS) &&
327 priv->contexts[IWL_RXON_CTX_BSS].vif &&
328 priv->contexts[IWL_RXON_CTX_BSS].vif->bss_conf.beacon_int) {
329 ctx->timing.beacon_interval =
330 priv->contexts[IWL_RXON_CTX_BSS].timing.beacon_interval;
331 beacon_int = le16_to_cpu(ctx->timing.beacon_interval);
332 } else if (ctx->ctxid == IWL_RXON_CTX_BSS &&
333 iwl_is_associated(priv, IWL_RXON_CTX_PAN) &&
334 priv->contexts[IWL_RXON_CTX_PAN].vif &&
335 priv->contexts[IWL_RXON_CTX_PAN].vif->bss_conf.beacon_int &&
336 (!iwl_is_associated_ctx(ctx) || !ctx->vif ||
337 !ctx->vif->bss_conf.beacon_int)) {
338 ctx->timing.beacon_interval =
339 priv->contexts[IWL_RXON_CTX_PAN].timing.beacon_interval;
340 beacon_int = le16_to_cpu(ctx->timing.beacon_interval);
341 } else {
342 beacon_int = iwl_adjust_beacon_interval(beacon_int,
343 IWL_MAX_UCODE_BEACON_INTERVAL * TIME_UNIT);
344 ctx->timing.beacon_interval = cpu_to_le16(beacon_int);
345 }
346
347 ctx->beacon_int = beacon_int;
348
349 tsf = priv->timestamp; /* tsf is modifed by do_div: copy it */
350 interval_tm = beacon_int * TIME_UNIT;
351 rem = do_div(tsf, interval_tm);
352 ctx->timing.beacon_init_val = cpu_to_le32(interval_tm - rem);
353
354 ctx->timing.dtim_period = vif ? (vif->bss_conf.dtim_period ?: 1) : 1;
355
356 IWL_DEBUG_ASSOC(priv,
357 "beacon interval %d beacon timer %d beacon tim %d\n",
358 le16_to_cpu(ctx->timing.beacon_interval),
359 le32_to_cpu(ctx->timing.beacon_init_val),
360 le16_to_cpu(ctx->timing.atim_window));
361
362 return iwl_dvm_send_cmd_pdu(priv, ctx->rxon_timing_cmd,
363 CMD_SYNC, sizeof(ctx->timing), &ctx->timing);
364}
365
c1821c95
WYG		 366static int iwlagn_rxon_disconn(struct iwl_priv *priv,
367 struct iwl_rxon_context *ctx)
368{
369 int ret;
370 struct iwl_rxon_cmd *active = (void *)&ctx->active;
371
2b9253d2 372 if (ctx->ctxid == IWL_RXON_CTX_BSS) {
c1821c95 373 ret = iwlagn_disable_bss(priv, ctx, &ctx->staging);
2b9253d2 374 } else {
c1821c95 375 ret = iwlagn_disable_pan(priv, ctx, &ctx->staging);
2b9253d2
JB		 376 if (ret)
377 return ret;
378 if (ctx->vif) {
379 ret = iwl_send_rxon_timing(priv, ctx);
380 if (ret) {
381 IWL_ERR(priv, "Failed to send timing (%d)!\n", ret);
382 return ret;
383 }
384 ret = iwlagn_disconn_pan(priv, ctx, &ctx->staging);
385 }
386 }
c1821c95
WYG		 387 if (ret)
388 return ret;
389
390 /*
391 * Un-assoc RXON clears the station table and WEP
392 * keys, so we have to restore those afterwards.
393 */
394 iwl_clear_ucode_stations(priv, ctx);
f775aa06
JB		 395 /* update -- might need P2P now */
396 iwl_update_bcast_station(priv, ctx);
c1821c95
WYG		 397 iwl_restore_stations(priv, ctx);
398 ret = iwl_restore_default_wep_keys(priv, ctx);
399 if (ret) {
400 IWL_ERR(priv, "Failed to restore WEP keys (%d)\n", ret);
401 return ret;
402 }
403
404 memcpy(active, &ctx->staging, sizeof(*active));
405 return 0;
406}
407
e6a62a6e
MV		 408static int iwl_set_tx_power(struct iwl_priv *priv, s8 tx_power, bool force)
409{
410 int ret;
411 s8 prev_tx_power;
412 bool defer;
413 struct iwl_rxon_context *ctx = &priv->contexts[IWL_RXON_CTX_BSS];
414
bfb45f54
DS		 415 if (priv->calib_disabled & IWL_TX_POWER_CALIB_DISABLED)
416 return 0;
417
e6a62a6e
MV		 418 lockdep_assert_held(&priv->mutex);
419
420 if (priv->tx_power_user_lmt == tx_power && !force)
421 return 0;
422
423 if (tx_power < IWLAGN_TX_POWER_TARGET_POWER_MIN) {
424 IWL_WARN(priv,
425 "Requested user TXPOWER %d below lower limit %d.\n",
426 tx_power,
427 IWLAGN_TX_POWER_TARGET_POWER_MIN);
428 return -EINVAL;
429 }
430
431 if (tx_power > priv->tx_power_device_lmt) {
432 IWL_WARN(priv,
433 "Requested user TXPOWER %d above upper limit %d.\n",
434 tx_power, priv->tx_power_device_lmt);
435 return -EINVAL;
436 }
437
438 if (!iwl_is_ready_rf(priv))
439 return -EIO;
440
441 /* scan complete and commit_rxon use tx_power_next value,
442 * it always need to be updated for newest request */
443 priv->tx_power_next = tx_power;
444
445 /* do not set tx power when scanning or channel changing */
446 defer = test_bit(STATUS_SCANNING, &priv->status) ||
447 memcmp(&ctx->active, &ctx->staging, sizeof(ctx->staging));
448 if (defer && !force) {
449 IWL_DEBUG_INFO(priv, "Deferring tx power set\n");
450 return 0;
451 }
452
453 prev_tx_power = priv->tx_power_user_lmt;
454 priv->tx_power_user_lmt = tx_power;
455
456 ret = iwlagn_send_tx_power(priv);
457
458 /* if fail to set tx_power, restore the orig. tx power */
459 if (ret) {
460 priv->tx_power_user_lmt = prev_tx_power;
461 priv->tx_power_next = prev_tx_power;
462 }
463 return ret;
464}
465
c1821c95
WYG		 466static int iwlagn_rxon_connect(struct iwl_priv *priv,
467 struct iwl_rxon_context *ctx)
468{
469 int ret;
470 struct iwl_rxon_cmd *active = (void *)&ctx->active;
471
472 /* RXON timing must be before associated RXON */
2b9253d2
JB		 473 if (ctx->ctxid == IWL_RXON_CTX_BSS) {
474 ret = iwl_send_rxon_timing(priv, ctx);
475 if (ret) {
476 IWL_ERR(priv, "Failed to send timing (%d)!\n", ret);
477 return ret;
478 }
c1821c95
WYG		 479 }
480 /* QoS info may be cleared by previous un-assoc RXON */
481 iwlagn_update_qos(priv, ctx);
482
483 /*
484 * We'll run into this code path when beaconing is
485 * enabled, but then we also need to send the beacon
486 * to the device.
487 */
488 if (ctx->vif && (ctx->vif->type == NL80211_IFTYPE_AP)) {
489 ret = iwlagn_update_beacon(priv, ctx->vif);
490 if (ret) {
491 IWL_ERR(priv,
492 "Error sending required beacon (%d)!\n",
493 ret);
494 return ret;
495 }
496 }
497
498 priv->start_calib = 0;
499 /*
500 * Apply the new configuration.
501 *
502 * Associated RXON doesn't clear the station table in uCode,
503 * so we don't need to restore stations etc. after this.
504 */
e10a0533 505 ret = iwl_dvm_send_cmd_pdu(priv, ctx->rxon_cmd, CMD_SYNC,
c1821c95
WYG		 506 sizeof(struct iwl_rxon_cmd), &ctx->staging);
507 if (ret) {
508 IWL_ERR(priv, "Error setting new RXON (%d)\n", ret);
509 return ret;
510 }
511 memcpy(active, &ctx->staging, sizeof(*active));
512
c1821c95
WYG		 513 /* IBSS beacon needs to be sent after setting assoc */
514 if (ctx->vif && (ctx->vif->type == NL80211_IFTYPE_ADHOC))
515 if (iwlagn_update_beacon(priv, ctx->vif))
516 IWL_ERR(priv, "Error sending IBSS beacon\n");
517 iwl_init_sensitivity(priv);
518
519 /*
520 * If we issue a new RXON command which required a tune then
521 * we must send a new TXPOWER command or we won't be able to
522 * Tx any frames.
523 *
524 * It's expected we set power here if channel is changing.
525 */
526 ret = iwl_set_tx_power(priv, priv->tx_power_next, true);
527 if (ret) {
528 IWL_ERR(priv, "Error sending TX power (%d)\n", ret);
529 return ret;
530 }
15b3f3b0 531
107ef97a 532 if (ctx->vif && ctx->vif->type == NL80211_IFTYPE_STATION &&
2152268f 533 priv->cfg->ht_params && priv->cfg->ht_params->smps_mode)
15b3f3b0 534 ieee80211_request_smps(ctx->vif,
2152268f 535 priv->cfg->ht_params->smps_mode);
15b3f3b0 536
c1821c95
WYG		 537 return 0;
538}
539
e505c433
WYG		 540int iwlagn_set_pan_params(struct iwl_priv *priv)
541{
542 struct iwl_wipan_params_cmd cmd;
543 struct iwl_rxon_context *ctx_bss, *ctx_pan;
544 int slot0 = 300, slot1 = 0;
545 int ret;
546
a18f61bc 547 if (priv->valid_contexts == BIT(IWL_RXON_CTX_BSS))
e505c433
WYG		 548 return 0;
549
550 BUILD_BUG_ON(NUM_IWL_RXON_CTX != 2);
551
b1eea297 552 lockdep_assert_held(&priv->mutex);
e505c433
WYG		 553
554 ctx_bss = &priv->contexts[IWL_RXON_CTX_BSS];
555 ctx_pan = &priv->contexts[IWL_RXON_CTX_PAN];
556
557 /*
558 * If the PAN context is inactive, then we don't need
559 * to update the PAN parameters, the last thing we'll
560 * have done before it goes inactive is making the PAN
561 * parameters be WLAN-only.
562 */
563 if (!ctx_pan->is_active)
564 return 0;
565
566 memset(&cmd, 0, sizeof(cmd));
567
568 /* only 2 slots are currently allowed */
569 cmd.num_slots = 2;
570
571 cmd.slots[0].type = 0; /* BSS */
572 cmd.slots[1].type = 1; /* PAN */
573
c6baf7fb 574 if (priv->hw_roc_setup) {
e505c433 575 /* both contexts must be used for this to happen */
c6baf7fb
JB		 576 slot1 = IWL_MIN_SLOT_TIME;
577 slot0 = 3000;
e505c433 578 } else if (ctx_bss->vif && ctx_pan->vif) {
bbb05cb5 579 int bcnint = ctx_pan->beacon_int;
e505c433
WYG		 580 int dtim = ctx_pan->vif->bss_conf.dtim_period ?: 1;
581
582 /* should be set, but seems unused?? */
583 cmd.flags |= cpu_to_le16(IWL_WIPAN_PARAMS_FLG_SLOTTED_MODE);
584
585 if (ctx_pan->vif->type == NL80211_IFTYPE_AP &&
586 bcnint &&
bbb05cb5 587 bcnint != ctx_bss->beacon_int) {
e505c433
WYG		 588 IWL_ERR(priv,
589 "beacon intervals don't match (%d, %d)\n",
bbb05cb5 590 ctx_bss->beacon_int, ctx_pan->beacon_int);
e505c433
WYG		 591 } else
592 bcnint = max_t(int, bcnint,
bbb05cb5 593 ctx_bss->beacon_int);
e505c433
WYG		 594 if (!bcnint)
595 bcnint = DEFAULT_BEACON_INTERVAL;
596 slot0 = bcnint / 2;
597 slot1 = bcnint - slot0;
598
83626404 599 if (test_bit(STATUS_SCAN_HW, &priv->status) ||
e505c433
WYG		 600 (!ctx_bss->vif->bss_conf.idle &&
601 !ctx_bss->vif->bss_conf.assoc)) {
602 slot0 = dtim * bcnint * 3 - IWL_MIN_SLOT_TIME;
603 slot1 = IWL_MIN_SLOT_TIME;
604 } else if (!ctx_pan->vif->bss_conf.idle &&
605 !ctx_pan->vif->bss_conf.assoc) {
325a7ddf 606 slot1 = dtim * bcnint * 3 - IWL_MIN_SLOT_TIME;
e505c433
WYG		 607 slot0 = IWL_MIN_SLOT_TIME;
608 }
609 } else if (ctx_pan->vif) {
610 slot0 = 0;
611 slot1 = max_t(int, 1, ctx_pan->vif->bss_conf.dtim_period) *
bbb05cb5 612 ctx_pan->beacon_int;
e505c433
WYG		 613 slot1 = max_t(int, DEFAULT_BEACON_INTERVAL, slot1);
614
83626404 615 if (test_bit(STATUS_SCAN_HW, &priv->status)) {
e505c433
WYG		 616 slot0 = slot1 * 3 - IWL_MIN_SLOT_TIME;
617 slot1 = IWL_MIN_SLOT_TIME;
618 }
619 }
620
621 cmd.slots[0].width = cpu_to_le16(slot0);
622 cmd.slots[1].width = cpu_to_le16(slot1);
623
e10a0533 624 ret = iwl_dvm_send_cmd_pdu(priv, REPLY_WIPAN_PARAMS, CMD_SYNC,
e505c433
WYG		 625 sizeof(cmd), &cmd);
626 if (ret)
627 IWL_ERR(priv, "Error setting PAN parameters (%d)\n", ret);
628
629 return ret;
630}
631
dd64173e
MV		 632static void _iwl_set_rxon_ht(struct iwl_priv *priv,
633 struct iwl_ht_config *ht_conf,
634 struct iwl_rxon_context *ctx)
635{
636 struct iwl_rxon_cmd *rxon = &ctx->staging;
637
638 if (!ctx->ht.enabled) {
639 rxon->flags &= ~(RXON_FLG_CHANNEL_MODE_MSK |
640 RXON_FLG_CTRL_CHANNEL_LOC_HI_MSK |
641 RXON_FLG_HT40_PROT_MSK |
642 RXON_FLG_HT_PROT_MSK);
643 return;
644 }
645
646 /* FIXME: if the definition of ht.protection changed, the "translation"
647 * will be needed for rxon->flags
648 */
649 rxon->flags |= cpu_to_le32(ctx->ht.protection <<
650 RXON_FLG_HT_OPERATING_MODE_POS);
651
652 /* Set up channel bandwidth:
653 * 20 MHz only, 20/40 mixed or pure 40 if ht40 ok */
654 /* clear the HT channel mode before set the mode */
655 rxon->flags &= ~(RXON_FLG_CHANNEL_MODE_MSK |
656 RXON_FLG_CTRL_CHANNEL_LOC_HI_MSK);
657 if (iwl_is_ht40_tx_allowed(priv, ctx, NULL)) {
658 /* pure ht40 */
659 if (ctx->ht.protection ==
660 IEEE80211_HT_OP_MODE_PROTECTION_20MHZ) {
661 rxon->flags |= RXON_FLG_CHANNEL_MODE_PURE_40;
662 /*
663 * Note: control channel is opposite of extension
664 * channel
665 */
666 switch (ctx->ht.extension_chan_offset) {
667 case IEEE80211_HT_PARAM_CHA_SEC_ABOVE:
668 rxon->flags &=
669 ~RXON_FLG_CTRL_CHANNEL_LOC_HI_MSK;
670 break;
671 case IEEE80211_HT_PARAM_CHA_SEC_BELOW:
672 rxon->flags |=
673 RXON_FLG_CTRL_CHANNEL_LOC_HI_MSK;
674 break;
675 }
676 } else {
677 /*
678 * Note: control channel is opposite of extension
679 * channel
680 */
681 switch (ctx->ht.extension_chan_offset) {
682 case IEEE80211_HT_PARAM_CHA_SEC_ABOVE:
683 rxon->flags &=
684 ~(RXON_FLG_CTRL_CHANNEL_LOC_HI_MSK);
685 rxon->flags |= RXON_FLG_CHANNEL_MODE_MIXED;
686 break;
687 case IEEE80211_HT_PARAM_CHA_SEC_BELOW:
688 rxon->flags |= RXON_FLG_CTRL_CHANNEL_LOC_HI_MSK;
689 rxon->flags |= RXON_FLG_CHANNEL_MODE_MIXED;
690 break;
691 case IEEE80211_HT_PARAM_CHA_SEC_NONE:
692 default:
693 /*
694 * channel location only valid if in Mixed
695 * mode
696 */
697 IWL_ERR(priv,
698 "invalid extension channel offset\n");
699 break;
700 }
701 }
702 } else {
703 rxon->flags |= RXON_FLG_CHANNEL_MODE_LEGACY;
704 }
705
706 iwlagn_set_rxon_chain(priv, ctx);
707
708 IWL_DEBUG_ASSOC(priv, "rxon flags 0x%X operation mode :0x%X "
709 "extension channel offset 0x%x\n",
710 le32_to_cpu(rxon->flags), ctx->ht.protection,
711 ctx->ht.extension_chan_offset);
712}
713
714void iwl_set_rxon_ht(struct iwl_priv *priv, struct iwl_ht_config *ht_conf)
715{
716 struct iwl_rxon_context *ctx;
717
718 for_each_context(priv, ctx)
719 _iwl_set_rxon_ht(priv, ht_conf, ctx);
720}
721
fedfa87a
MV		 722/**
723 * iwl_set_rxon_channel - Set the band and channel values in staging RXON
724 * @ch: requested channel as a pointer to struct ieee80211_channel
725
726 * NOTE: Does not commit to the hardware; it sets appropriate bit fields
727 * in the staging RXON flag structure based on the ch->band
728 */
729void iwl_set_rxon_channel(struct iwl_priv *priv, struct ieee80211_channel *ch,
730 struct iwl_rxon_context *ctx)
731{
732 enum ieee80211_band band = ch->band;
733 u16 channel = ch->hw_value;
734
735 if ((le16_to_cpu(ctx->staging.channel) == channel) &&
736 (priv->band == band))
737 return;
738
739 ctx->staging.channel = cpu_to_le16(channel);
740 if (band == IEEE80211_BAND_5GHZ)
741 ctx->staging.flags &= ~RXON_FLG_BAND_24G_MSK;
742 else
743 ctx->staging.flags |= RXON_FLG_BAND_24G_MSK;
744
745 priv->band = band;
746
747 IWL_DEBUG_INFO(priv, "Staging channel set to %d [%d]\n", channel, band);
748
749}
750
50319f74
MV		 751void iwl_set_flags_for_band(struct iwl_priv *priv,
752 struct iwl_rxon_context *ctx,
753 enum ieee80211_band band,
754 struct ieee80211_vif *vif)
755{
756 if (band == IEEE80211_BAND_5GHZ) {
757 ctx->staging.flags &=
758 ~(RXON_FLG_BAND_24G_MSK | RXON_FLG_AUTO_DETECT_MSK
759 | RXON_FLG_CCK_MSK);
760 ctx->staging.flags |= RXON_FLG_SHORT_SLOT_MSK;
761 } else {
762 /* Copied from iwl_post_associate() */
763 if (vif && vif->bss_conf.use_short_slot)
764 ctx->staging.flags |= RXON_FLG_SHORT_SLOT_MSK;
765 else
766 ctx->staging.flags &= ~RXON_FLG_SHORT_SLOT_MSK;
767
768 ctx->staging.flags |= RXON_FLG_BAND_24G_MSK;
769 ctx->staging.flags |= RXON_FLG_AUTO_DETECT_MSK;
770 ctx->staging.flags &= ~RXON_FLG_CCK_MSK;
771 }
772}
773
aecd44f0
MV		 774void iwl_set_rate(struct iwl_priv *priv)
775{
776 struct iwl_rxon_context *ctx;
777
778 for_each_context(priv, ctx) {
779 ctx->staging.cck_basic_rates =
780 (IWL_CCK_BASIC_RATES_MASK >> IWL_FIRST_CCK_RATE) & 0xF;
781
782 ctx->staging.ofdm_basic_rates =
783 (IWL_OFDM_BASIC_RATES_MASK >> IWL_FIRST_OFDM_RATE) & 0xFF;
784 }
785}
786
354a4530
MV		 787static void iwl_set_rxon_hwcrypto(struct iwl_priv *priv,
788 struct iwl_rxon_context *ctx, int hw_decrypt)
789{
790 struct iwl_rxon_cmd *rxon = &ctx->staging;
791
792 if (hw_decrypt)
793 rxon->filter_flags &= ~RXON_FILTER_DIS_DECRYPT_MSK;
794 else
795 rxon->filter_flags |= RXON_FILTER_DIS_DECRYPT_MSK;
796
797}
798
8931b576
MV		 799/* validate RXON structure is valid */
800static int iwl_check_rxon_cmd(struct iwl_priv *priv,
801 struct iwl_rxon_context *ctx)
802{
803 struct iwl_rxon_cmd *rxon = &ctx->staging;
804 u32 errors = 0;
805
806 if (rxon->flags & RXON_FLG_BAND_24G_MSK) {
807 if (rxon->flags & RXON_FLG_TGJ_NARROW_BAND_MSK) {
808 IWL_WARN(priv, "check 2.4G: wrong narrow\n");
809 errors |= BIT(0);
810 }
811 if (rxon->flags & RXON_FLG_RADAR_DETECT_MSK) {
812 IWL_WARN(priv, "check 2.4G: wrong radar\n");
813 errors |= BIT(1);
814 }
815 } else {
816 if (!(rxon->flags & RXON_FLG_SHORT_SLOT_MSK)) {
817 IWL_WARN(priv, "check 5.2G: not short slot!\n");
818 errors |= BIT(2);
819 }
820 if (rxon->flags & RXON_FLG_CCK_MSK) {
821 IWL_WARN(priv, "check 5.2G: CCK!\n");
822 errors |= BIT(3);
823 }
824 }
825 if ((rxon->node_addr[0] | rxon->bssid_addr[0]) & 0x1) {
826 IWL_WARN(priv, "mac/bssid mcast!\n");
827 errors |= BIT(4);
828 }
829
830 /* make sure basic rates 6Mbps and 1Mbps are supported */
831 if ((rxon->ofdm_basic_rates & IWL_RATE_6M_MASK) == 0 &&
832 (rxon->cck_basic_rates & IWL_RATE_1M_MASK) == 0) {
833 IWL_WARN(priv, "neither 1 nor 6 are basic\n");
834 errors |= BIT(5);
835 }
836
837 if (le16_to_cpu(rxon->assoc_id) > 2007) {
838 IWL_WARN(priv, "aid > 2007\n");
839 errors |= BIT(6);
840 }
841
842 if ((rxon->flags & (RXON_FLG_CCK_MSK | RXON_FLG_SHORT_SLOT_MSK))
843 == (RXON_FLG_CCK_MSK | RXON_FLG_SHORT_SLOT_MSK)) {
844 IWL_WARN(priv, "CCK and short slot\n");
845 errors |= BIT(7);
846 }
847
848 if ((rxon->flags & (RXON_FLG_CCK_MSK | RXON_FLG_AUTO_DETECT_MSK))
849 == (RXON_FLG_CCK_MSK | RXON_FLG_AUTO_DETECT_MSK)) {
850 IWL_WARN(priv, "CCK and auto detect");
851 errors |= BIT(8);
852 }
853
854 if ((rxon->flags & (RXON_FLG_AUTO_DETECT_MSK |
855 RXON_FLG_TGG_PROTECT_MSK)) ==
856 RXON_FLG_TGG_PROTECT_MSK) {
857 IWL_WARN(priv, "TGg but no auto-detect\n");
858 errors |= BIT(9);
859 }
860
861 if (rxon->channel == 0) {
862 IWL_WARN(priv, "zero channel is invalid\n");
863 errors |= BIT(10);
864 }
865
866 WARN(errors, "Invalid RXON (%#x), channel %d",
867 errors, le16_to_cpu(rxon->channel));
868
869 return errors ? -EINVAL : 0;
870}
871
55620921
MV		 872/**
873 * iwl_full_rxon_required - check if full RXON (vs RXON_ASSOC) cmd is needed
874 * @priv: staging_rxon is compared to active_rxon
875 *
876 * If the RXON structure is changing enough to require a new tune,
877 * or is clearing the RXON_FILTER_ASSOC_MSK, then return 1 to indicate that
878 * a new tune (full RXON command, rather than RXON_ASSOC cmd) is required.
879 */
50c1e9a9
DS		 880int iwl_full_rxon_required(struct iwl_priv *priv,
881 struct iwl_rxon_context *ctx)
55620921
MV		 882{
883 const struct iwl_rxon_cmd *staging = &ctx->staging;
884 const struct iwl_rxon_cmd *active = &ctx->active;
885
886#define CHK(cond) \
887 if ((cond)) { \
888 IWL_DEBUG_INFO(priv, "need full RXON - " #cond "\n"); \
889 return 1; \
890 }
891
892#define CHK_NEQ(c1, c2) \
893 if ((c1) != (c2)) { \
894 IWL_DEBUG_INFO(priv, "need full RXON - " \
895 #c1 " != " #c2 " - %d != %d\n", \
896 (c1), (c2)); \
897 return 1; \
898 }
899
900 /* These items are only settable from the full RXON command */
901 CHK(!iwl_is_associated_ctx(ctx));
902 CHK(compare_ether_addr(staging->bssid_addr, active->bssid_addr));
903 CHK(compare_ether_addr(staging->node_addr, active->node_addr));
904 CHK(compare_ether_addr(staging->wlap_bssid_addr,
905 active->wlap_bssid_addr));
906 CHK_NEQ(staging->dev_type, active->dev_type);
907 CHK_NEQ(staging->channel, active->channel);
908 CHK_NEQ(staging->air_propagation, active->air_propagation);
909 CHK_NEQ(staging->ofdm_ht_single_stream_basic_rates,
910 active->ofdm_ht_single_stream_basic_rates);
911 CHK_NEQ(staging->ofdm_ht_dual_stream_basic_rates,
912 active->ofdm_ht_dual_stream_basic_rates);
913 CHK_NEQ(staging->ofdm_ht_triple_stream_basic_rates,
914 active->ofdm_ht_triple_stream_basic_rates);
915 CHK_NEQ(staging->assoc_id, active->assoc_id);
916
917 /* flags, filter_flags, ofdm_basic_rates, and cck_basic_rates can
918 * be updated with the RXON_ASSOC command -- however only some
919 * flag transitions are allowed using RXON_ASSOC */
920
921 /* Check if we are not switching bands */
922 CHK_NEQ(staging->flags & RXON_FLG_BAND_24G_MSK,
923 active->flags & RXON_FLG_BAND_24G_MSK);
924
925 /* Check if we are switching association toggle */
926 CHK_NEQ(staging->filter_flags & RXON_FILTER_ASSOC_MSK,
927 active->filter_flags & RXON_FILTER_ASSOC_MSK);
928
929#undef CHK
930#undef CHK_NEQ
931
932 return 0;
933}
934
4d323acd
MV		 935#ifdef CONFIG_IWLWIFI_DEBUG
936void iwl_print_rx_config_cmd(struct iwl_priv *priv,
937 enum iwl_rxon_context_id ctxid)
938{
939 struct iwl_rxon_context *ctx = &priv->contexts[ctxid];
940 struct iwl_rxon_cmd *rxon = &ctx->staging;
941
942 IWL_DEBUG_RADIO(priv, "RX CONFIG:\n");
943 iwl_print_hex_dump(priv, IWL_DL_RADIO, (u8 *) rxon, sizeof(*rxon));
944 IWL_DEBUG_RADIO(priv, "u16 channel: 0x%x\n",
945 le16_to_cpu(rxon->channel));
946 IWL_DEBUG_RADIO(priv, "u32 flags: 0x%08X\n",
947 le32_to_cpu(rxon->flags));
948 IWL_DEBUG_RADIO(priv, "u32 filter_flags: 0x%08x\n",
949 le32_to_cpu(rxon->filter_flags));
950 IWL_DEBUG_RADIO(priv, "u8 dev_type: 0x%x\n", rxon->dev_type);
951 IWL_DEBUG_RADIO(priv, "u8 ofdm_basic_rates: 0x%02x\n",
952 rxon->ofdm_basic_rates);
953 IWL_DEBUG_RADIO(priv, "u8 cck_basic_rates: 0x%02x\n",
954 rxon->cck_basic_rates);
955 IWL_DEBUG_RADIO(priv, "u8[6] node_addr: %pM\n", rxon->node_addr);
956 IWL_DEBUG_RADIO(priv, "u8[6] bssid_addr: %pM\n", rxon->bssid_addr);
957 IWL_DEBUG_RADIO(priv, "u16 assoc_id: 0x%x\n",
958 le16_to_cpu(rxon->assoc_id));
959}
960#endif
961
2295c66b
JB		 962/**
963 * iwlagn_commit_rxon - commit staging_rxon to hardware
964 *
965 * The RXON command in staging_rxon is committed to the hardware and
966 * the active_rxon structure is updated with the new data. This
967 * function correctly transitions out of the RXON_ASSOC_MSK state if
968 * a HW tune is required based on the RXON structure changes.
c1821c95
WYG		 969 *
970 * The connect/disconnect flow should be as the following:
971 *
972 * 1. make sure send RXON command with association bit unset if not connect
973 * this should include the channel and the band for the candidate
974 * to be connected to
975 * 2. Add Station before RXON association with the AP
976 * 3. RXON_timing has to send before RXON for connection
977 * 4. full RXON command - associated bit set
978 * 5. use RXON_ASSOC command to update any flags changes
2295c66b
JB		 979 */
980int iwlagn_commit_rxon(struct iwl_priv *priv, struct iwl_rxon_context *ctx)
981{
982 /* cast away the const for active_rxon in this function */
983 struct iwl_rxon_cmd *active = (void *)&ctx->active;
2295c66b
JB		 984 bool new_assoc = !!(ctx->staging.filter_flags & RXON_FILTER_ASSOC_MSK);
985 int ret;
986
b1eea297 987 lockdep_assert_held(&priv->mutex);
2295c66b 988
83626404 989 if (!iwl_is_alive(priv))
2295c66b
JB		 990 return -EBUSY;
991
992 /* This function hardcodes a bunch of dual-mode assumptions */
993 BUILD_BUG_ON(NUM_IWL_RXON_CTX != 2);
994
995 if (!ctx->is_active)
996 return 0;
997
998 /* always get timestamp with Rx frame */
999 ctx->staging.flags |= RXON_FLG_TSF2HOST_MSK;
1000
42b70a5f
SG		 1001 /*
1002 * force CTS-to-self frames protection if RTS-CTS is not preferred
1003 * one aggregation protection method
1004 */
9e295116 1005 if (!priv->hw_params.use_rts_for_aggregation)
42b70a5f
SG		 1006 ctx->staging.flags |= RXON_FLG_SELF_CTS_EN;
1007
2295c66b
JB		 1008 if ((ctx->vif && ctx->vif->bss_conf.use_short_slot) ||
1009 !(ctx->staging.flags & RXON_FLG_BAND_24G_MSK))
1010 ctx->staging.flags |= RXON_FLG_SHORT_SLOT_MSK;
1011 else
1012 ctx->staging.flags &= ~RXON_FLG_SHORT_SLOT_MSK;
1013
522376d2 1014 iwl_print_rx_config_cmd(priv, ctx->ctxid);
2295c66b
JB		 1015 ret = iwl_check_rxon_cmd(priv, ctx);
1016 if (ret) {
1017 IWL_ERR(priv, "Invalid RXON configuration. Not committing.\n");
1018 return -EINVAL;
1019 }
1020
1021 /*
1022 * receive commit_rxon request
1023 * abort any previous channel switch if still in process
1024 */
83626404 1025 if (test_bit(STATUS_CHANNEL_SWITCH_PENDING, &priv->status) &&
6f213ff1 1026 (priv->switch_channel != ctx->staging.channel)) {
2295c66b 1027 IWL_DEBUG_11H(priv, "abort channel switch on %d\n",
6f213ff1 1028 le16_to_cpu(priv->switch_channel));
2295c66b
JB		 1029 iwl_chswitch_done(priv, false);
1030 }
1031
1032 /*
1033 * If we don't need to send a full RXON, we can use
1034 * iwl_rxon_assoc_cmd which is used to reconfigure filter
1035 * and other flags for the current radio configuration.
1036 */
1037 if (!iwl_full_rxon_required(priv, ctx)) {
c3f6e9cf 1038 ret = iwlagn_send_rxon_assoc(priv, ctx);
2295c66b
JB		 1039 if (ret) {
1040 IWL_ERR(priv, "Error setting RXON_ASSOC (%d)\n", ret);
1041 return ret;
1042 }
1043
1044 memcpy(active, &ctx->staging, sizeof(*active));
891db881
WYG		 1045 /*
1046 * We do not commit tx power settings while channel changing,
1047 * do it now if after settings changed.
1048 */
1049 iwl_set_tx_power(priv, priv->tx_power_next, false);
15b3f3b0
WYG		 1050
1051 /* make sure we are in the right PS state */
1052 iwl_power_update_mode(priv, true);
1053
2295c66b
JB		 1054 return 0;
1055 }
1056
9d143e9a 1057 iwl_set_rxon_hwcrypto(priv, ctx, !iwlagn_mod_params.sw_crypto);
2295c66b
JB		 1058
1059 IWL_DEBUG_INFO(priv,
1060 "Going to commit RXON\n"
1061 " * with%s RXON_FILTER_ASSOC_MSK\n"
1062 " * channel = %d\n"
1063 " * bssid = %pM\n",
1064 (new_assoc ? "" : "out"),
1065 le16_to_cpu(ctx->staging.channel),
1066 ctx->staging.bssid_addr);
1067
1068 /*
52d980c0
JB		 1069 * Always clear associated first, but with the correct config.
1070 * This is required as for example station addition for the
1071 * AP station must be done after the BSSID is set to correctly
1072 * set up filters in the device.
2295c66b 1073 */
3083d03c
WYG		 1074 ret = iwlagn_rxon_disconn(priv, ctx);
1075 if (ret)
1076 return ret;
2295c66b 1077
e3f10cea
WYG		 1078 ret = iwlagn_set_pan_params(priv);
1079 if (ret)
1080 return ret;
2b9253d2 1081
c1821c95
WYG		 1082 if (new_assoc)
1083 return iwlagn_rxon_connect(priv, ctx);
2295c66b
JB		 1084
1085 return 0;
1086}
1087
34a5b4b6
WYG		 1088void iwlagn_config_ht40(struct ieee80211_conf *conf,
1089 struct iwl_rxon_context *ctx)
1090{
1091 if (conf_is_ht40_minus(conf)) {
1092 ctx->ht.extension_chan_offset =
1093 IEEE80211_HT_PARAM_CHA_SEC_BELOW;
1094 ctx->ht.is_40mhz = true;
1095 } else if (conf_is_ht40_plus(conf)) {
1096 ctx->ht.extension_chan_offset =
1097 IEEE80211_HT_PARAM_CHA_SEC_ABOVE;
1098 ctx->ht.is_40mhz = true;
1099 } else {
1100 ctx->ht.extension_chan_offset =
1101 IEEE80211_HT_PARAM_CHA_SEC_NONE;
1102 ctx->ht.is_40mhz = false;
1103 }
1104}
1105
2295c66b
JB		 1106int iwlagn_mac_config(struct ieee80211_hw *hw, u32 changed)
1107{
d0f76d68 1108 struct iwl_priv *priv = IWL_MAC80211_GET_DVM(hw);
2295c66b
JB		 1109 struct iwl_rxon_context *ctx;
1110 struct ieee80211_conf *conf = &hw->conf;
1111 struct ieee80211_channel *channel = conf->channel;
1112 const struct iwl_channel_info *ch_info;
1113 int ret = 0;
1114
0ca24daf 1115 IWL_DEBUG_MAC80211(priv, "enter: changed %#x\n", changed);
2295c66b 1116
b1eea297 1117 mutex_lock(&priv->mutex);
2295c66b 1118
83626404 1119 if (unlikely(test_bit(STATUS_SCANNING, &priv->status))) {
2295c66b
JB		 1120 IWL_DEBUG_MAC80211(priv, "leave - scanning\n");
1121 goto out;
1122 }
1123
83626404 1124 if (!iwl_is_ready(priv)) {
2295c66b
JB		 1125 IWL_DEBUG_MAC80211(priv, "leave - not ready\n");
1126 goto out;
1127 }
1128
1129 if (changed & (IEEE80211_CONF_CHANGE_SMPS |
1130 IEEE80211_CONF_CHANGE_CHANNEL)) {
1131 /* mac80211 uses static for non-HT which is what we want */
1132 priv->current_ht_config.smps = conf->smps_mode;
1133
1134 /*
1135 * Recalculate chain counts.
1136 *
1137 * If monitor mode is enabled then mac80211 will
1138 * set up the SM PS mode to OFF if an HT channel is
1139 * configured.
1140 */
e3f10cea
WYG		 1141 for_each_context(priv, ctx)
1142 iwlagn_set_rxon_chain(priv, ctx);
2295c66b
JB		 1143 }
1144
1145 if (changed & IEEE80211_CONF_CHANGE_CHANNEL) {
2295c66b
JB		 1146 ch_info = iwl_get_channel_info(priv, channel->band,
1147 channel->hw_value);
1148 if (!is_channel_valid(ch_info)) {
1149 IWL_DEBUG_MAC80211(priv, "leave - invalid channel\n");
1150 ret = -EINVAL;
1151 goto out;
1152 }
1153
2295c66b
JB		 1154 for_each_context(priv, ctx) {
1155 /* Configure HT40 channels */
7caa2316 1156 if (ctx->ht.enabled != conf_is_ht(conf))
35a6eb36 1157 ctx->ht.enabled = conf_is_ht(conf);
35a6eb36 1158
2295c66b 1159 if (ctx->ht.enabled) {
34a5b4b6
WYG		 1160 /* if HT40 is used, it should not change
1161 * after associated except channel switch */
78feb35b
WYG		 1162 if (!ctx->ht.is_40mhz ||
1163 !iwl_is_associated_ctx(ctx))
34a5b4b6 1164 iwlagn_config_ht40(conf, ctx);
2295c66b
JB		 1165 } else
1166 ctx->ht.is_40mhz = false;
1167
1168 /*
1169 * Default to no protection. Protection mode will
1170 * later be set from BSS config in iwl_ht_conf
1171 */
1172 ctx->ht.protection = IEEE80211_HT_OP_MODE_PROTECTION_NONE;
1173
1174 /* if we are switching from ht to 2.4 clear flags
1175 * from any ht related info since 2.4 does not
1176 * support ht */
1177 if (le16_to_cpu(ctx->staging.channel) !=
1178 channel->hw_value)
1179 ctx->staging.flags = 0;
1180
1181 iwl_set_rxon_channel(priv, channel, ctx);
1182 iwl_set_rxon_ht(priv, &priv->current_ht_config);
1183
1184 iwl_set_flags_for_band(priv, ctx, channel->band,
1185 ctx->vif);
1186 }
1187
2295c66b
JB		 1188 iwl_update_bcast_stations(priv);
1189
1190 /*
1191 * The list of supported rates and rate mask can be different
1192 * for each band; since the band may have changed, reset
1193 * the rate mask to what mac80211 lists.
1194 */
1195 iwl_set_rate(priv);
1196 }
1197
1198 if (changed & (IEEE80211_CONF_CHANGE_PS |
1199 IEEE80211_CONF_CHANGE_IDLE)) {
1200 ret = iwl_power_update_mode(priv, false);
1201 if (ret)
1202 IWL_DEBUG_MAC80211(priv, "Error setting sleep level\n");
1203 }
1204
1205 if (changed & IEEE80211_CONF_CHANGE_POWER) {
1206 IWL_DEBUG_MAC80211(priv, "TX Power old=%d new=%d\n",
1207 priv->tx_power_user_lmt, conf->power_level);
1208
1209 iwl_set_tx_power(priv, conf->power_level, false);
1210 }
1211
1212 for_each_context(priv, ctx) {
1213 if (!memcmp(&ctx->staging, &ctx->active, sizeof(ctx->staging)))
1214 continue;
1215 iwlagn_commit_rxon(priv, ctx);
1216 }
1217 out:
b1eea297 1218 mutex_unlock(&priv->mutex);
770c72c4
WYG		 1219 IWL_DEBUG_MAC80211(priv, "leave\n");
1220
2295c66b
JB		 1221 return ret;
1222}
1223
50c1e9a9
DS		 1224void iwlagn_check_needed_chains(struct iwl_priv *priv,
1225 struct iwl_rxon_context *ctx,
1226 struct ieee80211_bss_conf *bss_conf)
2295c66b
JB		 1227{
1228 struct ieee80211_vif *vif = ctx->vif;
1229 struct iwl_rxon_context *tmp;
1230 struct ieee80211_sta *sta;
1231 struct iwl_ht_config *ht_conf = &priv->current_ht_config;
850bedcc 1232 struct ieee80211_sta_ht_cap *ht_cap;
2295c66b
JB		 1233 bool need_multiple;
1234
b1eea297 1235 lockdep_assert_held(&priv->mutex);
2295c66b
JB		 1236
1237 switch (vif->type) {
1238 case NL80211_IFTYPE_STATION:
1239 rcu_read_lock();
1240 sta = ieee80211_find_sta(vif, bss_conf->bssid);
850bedcc 1241 if (!sta) {
2295c66b
JB		 1242 /*
1243 * If at all, this can only happen through a race
1244 * when the AP disconnects us while we're still
1245 * setting up the connection, in that case mac80211
1246 * will soon tell us about that.
1247 */
1248 need_multiple = false;
850bedcc
JB		 1249 rcu_read_unlock();
1250 break;
1251 }
1252
1253 ht_cap = &sta->ht_cap;
1254
1255 need_multiple = true;
1256
1257 /*
1258 * If the peer advertises no support for receiving 2 and 3
1259 * stream MCS rates, it can't be transmitting them either.
1260 */
1261 if (ht_cap->mcs.rx_mask[1] == 0 &&
1262 ht_cap->mcs.rx_mask[2] == 0) {
1263 need_multiple = false;
1264 } else if (!(ht_cap->mcs.tx_params &
1265 IEEE80211_HT_MCS_TX_DEFINED)) {
1266 /* If it can't TX MCS at all ... */
1267 need_multiple = false;
1268 } else if (ht_cap->mcs.tx_params &
1269 IEEE80211_HT_MCS_TX_RX_DIFF) {
1270 int maxstreams;
1271
1272 /*
1273 * But if it can receive them, it might still not
1274 * be able to transmit them, which is what we need
1275 * to check here -- so check the number of streams
1276 * it advertises for TX (if different from RX).
1277 */
1278
1279 maxstreams = (ht_cap->mcs.tx_params &
1280 IEEE80211_HT_MCS_TX_MAX_STREAMS_MASK);
1281 maxstreams >>=
1282 IEEE80211_HT_MCS_TX_MAX_STREAMS_SHIFT;
1283 maxstreams += 1;
1284
1285 if (maxstreams <= 1)
1286 need_multiple = false;
2295c66b 1287 }
850bedcc 1288
2295c66b
JB		 1289 rcu_read_unlock();
1290 break;
1291 case NL80211_IFTYPE_ADHOC:
1292 /* currently */
1293 need_multiple = false;
1294 break;
1295 default:
1296 /* only AP really */
1297 need_multiple = true;
1298 break;
1299 }
1300
1301 ctx->ht_need_multiple_chains = need_multiple;
1302
1303 if (!need_multiple) {
1304 /* check all contexts */
1305 for_each_context(priv, tmp) {
1306 if (!tmp->vif)
1307 continue;
1308 if (tmp->ht_need_multiple_chains) {
1309 need_multiple = true;
1310 break;
1311 }
1312 }
1313 }
1314
1315 ht_conf->single_chain_sufficient = !need_multiple;
1316}
1317
50c1e9a9 1318void iwlagn_chain_noise_reset(struct iwl_priv *priv)
5c3d29fc
DF		 1319{
1320 struct iwl_chain_noise_data *data = &priv->chain_noise_data;
1321 int ret;
1322
bfb45f54
DS		 1323 if (!(priv->calib_disabled & IWL_CHAIN_NOISE_CALIB_DISABLED))
1324 return;
1325
5c3d29fc
DF		 1326 if ((data->state == IWL_CHAIN_NOISE_ALIVE) &&
1327 iwl_is_any_associated(priv)) {
1328 struct iwl_calib_chain_noise_reset_cmd cmd;
1329
1330 /* clear data for chain noise calibration algorithm */
1331 data->chain_noise_a = 0;
1332 data->chain_noise_b = 0;
1333 data->chain_noise_c = 0;
1334 data->chain_signal_a = 0;
1335 data->chain_signal_b = 0;
1336 data->chain_signal_c = 0;
1337 data->beacon_count = 0;
1338
1339 memset(&cmd, 0, sizeof(cmd));
1340 iwl_set_calib_hdr(&cmd.hdr,
898ed67b 1341 priv->phy_calib_chain_noise_reset_cmd);
e10a0533 1342 ret = iwl_dvm_send_cmd_pdu(priv,
5c3d29fc
DF		 1343 REPLY_PHY_CALIBRATION_CMD,
1344 CMD_SYNC, sizeof(cmd), &cmd);
1345 if (ret)
1346 IWL_ERR(priv,
1347 "Could not send REPLY_PHY_CALIBRATION_CMD\n");
1348 data->state = IWL_CHAIN_NOISE_ACCUMULATE;
1349 IWL_DEBUG_CALIB(priv, "Run chain_noise_calibrate\n");
1350 }
1351}
1352
2295c66b
JB		 1353void iwlagn_bss_info_changed(struct ieee80211_hw *hw,
1354 struct ieee80211_vif *vif,
1355 struct ieee80211_bss_conf *bss_conf,
1356 u32 changes)
1357{
d0f76d68 1358 struct iwl_priv *priv = IWL_MAC80211_GET_DVM(hw);
2295c66b
JB		 1359 struct iwl_rxon_context *ctx = iwl_rxon_ctx_from_vif(vif);
1360 int ret;
1361 bool force = false;
1362
b1eea297 1363 mutex_lock(&priv->mutex);
2295c66b 1364
83626404 1365 if (unlikely(!iwl_is_ready(priv))) {
14a085e7 1366 IWL_DEBUG_MAC80211(priv, "leave - not ready\n");
b1eea297 1367 mutex_unlock(&priv->mutex);
ae0b693c
SZ		 1368 return;
1369 }
1370
1371 if (unlikely(!ctx->vif)) {
1372 IWL_DEBUG_MAC80211(priv, "leave - vif is NULL\n");
b1eea297 1373 mutex_unlock(&priv->mutex);
893654de
JB		 1374 return;
1375 }
1376
2295c66b
JB		 1377 if (changes & BSS_CHANGED_BEACON_INT)
1378 force = true;
1379
1380 if (changes & BSS_CHANGED_QOS) {
1381 ctx->qos_data.qos_active = bss_conf->qos;
1382 iwlagn_update_qos(priv, ctx);
1383 }
1384
1385 ctx->staging.assoc_id = cpu_to_le16(vif->bss_conf.aid);
1386 if (vif->bss_conf.use_short_preamble)
1387 ctx->staging.flags |= RXON_FLG_SHORT_PREAMBLE_MSK;
1388 else
1389 ctx->staging.flags &= ~RXON_FLG_SHORT_PREAMBLE_MSK;
1390
1391 if (changes & BSS_CHANGED_ASSOC) {
1392 if (bss_conf->assoc) {
e9ac0745 1393 priv->timestamp = bss_conf->last_tsf;
2295c66b
JB		 1394 ctx->staging.filter_flags |= RXON_FILTER_ASSOC_MSK;
1395 } else {
68b99311
GT		 1396 /*
1397 * If we disassociate while there are pending
1398 * frames, just wake up the queues and let the
1399 * frames "escape" ... This shouldn't really
1400 * be happening to start with, but we should
1401 * not get stuck in this case either since it
1402 * can happen if userspace gets confused.
1403 */
e755f882
JB		 1404 iwlagn_lift_passive_no_rx(priv);
1405
2295c66b 1406 ctx->staging.filter_flags &= ~RXON_FILTER_ASSOC_MSK;
c8ac61cf
JB		 1407
1408 if (ctx->ctxid == IWL_RXON_CTX_BSS)
1409 priv->have_rekey_data = false;
2295c66b 1410 }
207ecc5e
MV		 1411
1412 iwlagn_bt_coex_rssi_monitor(priv);
2295c66b
JB		 1413 }
1414
1415 if (ctx->ht.enabled) {
1416 ctx->ht.protection = bss_conf->ht_operation_mode &
1417 IEEE80211_HT_OP_MODE_PROTECTION;
1418 ctx->ht.non_gf_sta_present = !!(bss_conf->ht_operation_mode &
1419 IEEE80211_HT_OP_MODE_NON_GF_STA_PRSNT);
1420 iwlagn_check_needed_chains(priv, ctx, bss_conf);
b2769b84 1421 iwl_set_rxon_ht(priv, &priv->current_ht_config);
2295c66b
JB		 1422 }
1423
e3f10cea 1424 iwlagn_set_rxon_chain(priv, ctx);
2295c66b
JB		 1425
1426 if (bss_conf->use_cts_prot && (priv->band != IEEE80211_BAND_5GHZ))
1427 ctx->staging.flags |= RXON_FLG_TGG_PROTECT_MSK;
1428 else
1429 ctx->staging.flags &= ~RXON_FLG_TGG_PROTECT_MSK;
1430
1431 if (bss_conf->use_cts_prot)
1432 ctx->staging.flags |= RXON_FLG_SELF_CTS_EN;
1433 else
1434 ctx->staging.flags &= ~RXON_FLG_SELF_CTS_EN;
1435
1436 memcpy(ctx->staging.bssid_addr, bss_conf->bssid, ETH_ALEN);
1437
1438 if (vif->type == NL80211_IFTYPE_AP ||
1439 vif->type == NL80211_IFTYPE_ADHOC) {
1440 if (vif->bss_conf.enable_beacon) {
1441 ctx->staging.filter_flags |= RXON_FILTER_ASSOC_MSK;
1442 priv->beacon_ctx = ctx;
1443 } else {
1444 ctx->staging.filter_flags &= ~RXON_FILTER_ASSOC_MSK;
1445 priv->beacon_ctx = NULL;
1446 }
1447 }
1448
758f555f
MV		 1449 /*
1450 * If the ucode decides to do beacon filtering before
1451 * association, it will lose beacons that are needed
1452 * before sending frames out on passive channels. This
1453 * causes association failures on those channels. Enable
1454 * receiving beacons in such cases.
1455 */
1456
1457 if (vif->type == NL80211_IFTYPE_STATION) {
1458 if (!bss_conf->assoc)
1459 ctx->staging.filter_flags |= RXON_FILTER_BCON_AWARE_MSK;
1460 else
1461 ctx->staging.filter_flags &=
1462 ~RXON_FILTER_BCON_AWARE_MSK;
1463 }
1464
2295c66b
JB		 1465 if (force || memcmp(&ctx->staging, &ctx->active, sizeof(ctx->staging)))
1466 iwlagn_commit_rxon(priv, ctx);
1467
8da8e628
JB		 1468 if (changes & BSS_CHANGED_ASSOC && bss_conf->assoc) {
1469 /*
1470 * The chain noise calibration will enable PM upon
1471 * completion. If calibration has already been run
1472 * then we need to enable power management here.
1473 */
1474 if (priv->chain_noise_data.state == IWL_CHAIN_NOISE_DONE)
1475 iwl_power_update_mode(priv, false);
1476
1477 /* Enable RX differential gain and sensitivity calibrations */
bfb45f54 1478 iwlagn_chain_noise_reset(priv);
8da8e628
JB		 1479 priv->start_calib = 1;
1480 }
1481
2295c66b
JB		 1482 if (changes & BSS_CHANGED_IBSS) {
1483 ret = iwlagn_manage_ibss_station(priv, vif,
1484 bss_conf->ibss_joined);
1485 if (ret)
1486 IWL_ERR(priv, "failed to %s IBSS station %pM\n",
1487 bss_conf->ibss_joined ? "add" : "remove",
1488 bss_conf->bssid);
1489 }
1490
bd50a8ab
JB		 1491 if (changes & BSS_CHANGED_BEACON && vif->type == NL80211_IFTYPE_ADHOC &&
1492 priv->beacon_ctx) {
1493 if (iwlagn_update_beacon(priv, vif))
1494 IWL_ERR(priv, "Error sending IBSS beacon\n");
1495 }
1496
b1eea297 1497 mutex_unlock(&priv->mutex);
2295c66b 1498}
ae79d23d
JB		 1499
1500void iwlagn_post_scan(struct iwl_priv *priv)
1501{
1502 struct iwl_rxon_context *ctx;
1503
c2b821d7
WYG		 1504 /*
1505 * We do not commit power settings while scan is pending,
1506 * do it now if the settings changed.
1507 */
1508 iwl_power_set_mode(priv, &priv->power_data.sleep_cmd_next, false);
1509 iwl_set_tx_power(priv, priv->tx_power_next, false);
1510
ae79d23d
JB		 1511 /*
1512 * Since setting the RXON may have been deferred while
1513 * performing the scan, fire one off if needed
1514 */
1515 for_each_context(priv, ctx)
1516 if (memcmp(&ctx->staging, &ctx->active, sizeof(ctx->staging)))
1517 iwlagn_commit_rxon(priv, ctx);
1518
e3f10cea 1519 iwlagn_set_pan_params(priv);
ae79d23d 1520}
Linux kernel - Deliverables
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