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[deliverable/linux.git] / drivers / net / wireless / iwlwifi / iwl-core.c
1 /******************************************************************************
2 *
3 * GPL LICENSE SUMMARY
4 *
5 * Copyright(c) 2008 - 2009 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 <net/mac80211.h>
33
34 #include "iwl-eeprom.h"
35 #include "iwl-dev.h" /* FIXME: remove */
36 #include "iwl-debug.h"
37 #include "iwl-core.h"
38 #include "iwl-io.h"
39 #include "iwl-rfkill.h"
40 #include "iwl-power.h"
41 #include "iwl-sta.h"
42
43
44 MODULE_DESCRIPTION("iwl core");
45 MODULE_VERSION(IWLWIFI_VERSION);
46 MODULE_AUTHOR(DRV_COPYRIGHT " " DRV_AUTHOR);
47 MODULE_LICENSE("GPL");
48
49 #define IWL_DECLARE_RATE_INFO(r, s, ip, in, rp, rn, pp, np) \
50 [IWL_RATE_##r##M_INDEX] = { IWL_RATE_##r##M_PLCP, \
51 IWL_RATE_SISO_##s##M_PLCP, \
52 IWL_RATE_MIMO2_##s##M_PLCP,\
53 IWL_RATE_MIMO3_##s##M_PLCP,\
54 IWL_RATE_##r##M_IEEE, \
55 IWL_RATE_##ip##M_INDEX, \
56 IWL_RATE_##in##M_INDEX, \
57 IWL_RATE_##rp##M_INDEX, \
58 IWL_RATE_##rn##M_INDEX, \
59 IWL_RATE_##pp##M_INDEX, \
60 IWL_RATE_##np##M_INDEX }
61
62 /*
63 * Parameter order:
64 * rate, ht rate, prev rate, next rate, prev tgg rate, next tgg rate
65 *
66 * If there isn't a valid next or previous rate then INV is used which
67 * maps to IWL_RATE_INVALID
68 *
69 */
70 const struct iwl_rate_info iwl_rates[IWL_RATE_COUNT] = {
71 IWL_DECLARE_RATE_INFO(1, INV, INV, 2, INV, 2, INV, 2), /* 1mbps */
72 IWL_DECLARE_RATE_INFO(2, INV, 1, 5, 1, 5, 1, 5), /* 2mbps */
73 IWL_DECLARE_RATE_INFO(5, INV, 2, 6, 2, 11, 2, 11), /*5.5mbps */
74 IWL_DECLARE_RATE_INFO(11, INV, 9, 12, 9, 12, 5, 18), /* 11mbps */
75 IWL_DECLARE_RATE_INFO(6, 6, 5, 9, 5, 11, 5, 11), /* 6mbps */
76 IWL_DECLARE_RATE_INFO(9, 6, 6, 11, 6, 11, 5, 11), /* 9mbps */
77 IWL_DECLARE_RATE_INFO(12, 12, 11, 18, 11, 18, 11, 18), /* 12mbps */
78 IWL_DECLARE_RATE_INFO(18, 18, 12, 24, 12, 24, 11, 24), /* 18mbps */
79 IWL_DECLARE_RATE_INFO(24, 24, 18, 36, 18, 36, 18, 36), /* 24mbps */
80 IWL_DECLARE_RATE_INFO(36, 36, 24, 48, 24, 48, 24, 48), /* 36mbps */
81 IWL_DECLARE_RATE_INFO(48, 48, 36, 54, 36, 54, 36, 54), /* 48mbps */
82 IWL_DECLARE_RATE_INFO(54, 54, 48, INV, 48, INV, 48, INV),/* 54mbps */
83 IWL_DECLARE_RATE_INFO(60, 60, 48, INV, 48, INV, 48, INV),/* 60mbps */
84 /* FIXME:RS: ^^ should be INV (legacy) */
85 };
86 EXPORT_SYMBOL(iwl_rates);
87
88 /**
89 * translate ucode response to mac80211 tx status control values
90 */
91 void iwl_hwrate_to_tx_control(struct iwl_priv *priv, u32 rate_n_flags,
92 struct ieee80211_tx_info *info)
93 {
94 int rate_index;
95 struct ieee80211_tx_rate *r = &info->control.rates[0];
96
97 info->antenna_sel_tx =
98 ((rate_n_flags & RATE_MCS_ANT_ABC_MSK) >> RATE_MCS_ANT_POS);
99 if (rate_n_flags & RATE_MCS_HT_MSK)
100 r->flags |= IEEE80211_TX_RC_MCS;
101 if (rate_n_flags & RATE_MCS_GF_MSK)
102 r->flags |= IEEE80211_TX_RC_GREEN_FIELD;
103 if (rate_n_flags & RATE_MCS_FAT_MSK)
104 r->flags |= IEEE80211_TX_RC_40_MHZ_WIDTH;
105 if (rate_n_flags & RATE_MCS_DUP_MSK)
106 r->flags |= IEEE80211_TX_RC_DUP_DATA;
107 if (rate_n_flags & RATE_MCS_SGI_MSK)
108 r->flags |= IEEE80211_TX_RC_SHORT_GI;
109 rate_index = iwl_hwrate_to_plcp_idx(rate_n_flags);
110 if (info->band == IEEE80211_BAND_5GHZ)
111 rate_index -= IWL_FIRST_OFDM_RATE;
112 r->idx = rate_index;
113 }
114 EXPORT_SYMBOL(iwl_hwrate_to_tx_control);
115
116 int iwl_hwrate_to_plcp_idx(u32 rate_n_flags)
117 {
118 int idx = 0;
119
120 /* HT rate format */
121 if (rate_n_flags & RATE_MCS_HT_MSK) {
122 idx = (rate_n_flags & 0xff);
123
124 if (idx >= IWL_RATE_MIMO3_6M_PLCP)
125 idx = idx - IWL_RATE_MIMO3_6M_PLCP;
126 else if (idx >= IWL_RATE_MIMO2_6M_PLCP)
127 idx = idx - IWL_RATE_MIMO2_6M_PLCP;
128
129 idx += IWL_FIRST_OFDM_RATE;
130 /* skip 9M not supported in ht*/
131 if (idx >= IWL_RATE_9M_INDEX)
132 idx += 1;
133 if ((idx >= IWL_FIRST_OFDM_RATE) && (idx <= IWL_LAST_OFDM_RATE))
134 return idx;
135
136 /* legacy rate format, search for match in table */
137 } else {
138 for (idx = 0; idx < ARRAY_SIZE(iwl_rates); idx++)
139 if (iwl_rates[idx].plcp == (rate_n_flags & 0xFF))
140 return idx;
141 }
142
143 return -1;
144 }
145 EXPORT_SYMBOL(iwl_hwrate_to_plcp_idx);
146
147 u8 iwl_toggle_tx_ant(struct iwl_priv *priv, u8 ant)
148 {
149 int i;
150 u8 ind = ant;
151 for (i = 0; i < RATE_ANT_NUM - 1; i++) {
152 ind = (ind + 1) < RATE_ANT_NUM ? ind + 1 : 0;
153 if (priv->hw_params.valid_tx_ant & BIT(ind))
154 return ind;
155 }
156 return ant;
157 }
158
159 const u8 iwl_bcast_addr[ETH_ALEN] = { 0xFF, 0xFF, 0xFF, 0xFF, 0xFF, 0xFF };
160 EXPORT_SYMBOL(iwl_bcast_addr);
161
162
163 /* This function both allocates and initializes hw and priv. */
164 struct ieee80211_hw *iwl_alloc_all(struct iwl_cfg *cfg,
165 struct ieee80211_ops *hw_ops)
166 {
167 struct iwl_priv *priv;
168
169 /* mac80211 allocates memory for this device instance, including
170 * space for this driver's private structure */
171 struct ieee80211_hw *hw =
172 ieee80211_alloc_hw(sizeof(struct iwl_priv), hw_ops);
173 if (hw == NULL) {
174 printk(KERN_ERR "%s: Can not allocate network device\n",
175 cfg->name);
176 goto out;
177 }
178
179 priv = hw->priv;
180 priv->hw = hw;
181
182 out:
183 return hw;
184 }
185 EXPORT_SYMBOL(iwl_alloc_all);
186
187 void iwl_hw_detect(struct iwl_priv *priv)
188 {
189 priv->hw_rev = _iwl_read32(priv, CSR_HW_REV);
190 priv->hw_wa_rev = _iwl_read32(priv, CSR_HW_REV_WA_REG);
191 pci_read_config_byte(priv->pci_dev, PCI_REVISION_ID, &priv->rev_id);
192 }
193 EXPORT_SYMBOL(iwl_hw_detect);
194
195 int iwl_hw_nic_init(struct iwl_priv *priv)
196 {
197 unsigned long flags;
198 struct iwl_rx_queue *rxq = &priv->rxq;
199 int ret;
200
201 /* nic_init */
202 spin_lock_irqsave(&priv->lock, flags);
203 priv->cfg->ops->lib->apm_ops.init(priv);
204 iwl_write32(priv, CSR_INT_COALESCING, 512 / 32);
205 spin_unlock_irqrestore(&priv->lock, flags);
206
207 ret = priv->cfg->ops->lib->apm_ops.set_pwr_src(priv, IWL_PWR_SRC_VMAIN);
208
209 priv->cfg->ops->lib->apm_ops.config(priv);
210
211 /* Allocate the RX queue, or reset if it is already allocated */
212 if (!rxq->bd) {
213 ret = iwl_rx_queue_alloc(priv);
214 if (ret) {
215 IWL_ERR(priv, "Unable to initialize Rx queue\n");
216 return -ENOMEM;
217 }
218 } else
219 iwl_rx_queue_reset(priv, rxq);
220
221 iwl_rx_replenish(priv);
222
223 iwl_rx_init(priv, rxq);
224
225 spin_lock_irqsave(&priv->lock, flags);
226
227 rxq->need_update = 1;
228 iwl_rx_queue_update_write_ptr(priv, rxq);
229
230 spin_unlock_irqrestore(&priv->lock, flags);
231
232 /* Allocate and init all Tx and Command queues */
233 ret = iwl_txq_ctx_reset(priv);
234 if (ret)
235 return ret;
236
237 set_bit(STATUS_INIT, &priv->status);
238
239 return 0;
240 }
241 EXPORT_SYMBOL(iwl_hw_nic_init);
242
243 /*
244 * QoS support
245 */
246 void iwl_activate_qos(struct iwl_priv *priv, u8 force)
247 {
248 if (test_bit(STATUS_EXIT_PENDING, &priv->status))
249 return;
250
251 priv->qos_data.def_qos_parm.qos_flags = 0;
252
253 if (priv->qos_data.qos_cap.q_AP.queue_request &&
254 !priv->qos_data.qos_cap.q_AP.txop_request)
255 priv->qos_data.def_qos_parm.qos_flags |=
256 QOS_PARAM_FLG_TXOP_TYPE_MSK;
257 if (priv->qos_data.qos_active)
258 priv->qos_data.def_qos_parm.qos_flags |=
259 QOS_PARAM_FLG_UPDATE_EDCA_MSK;
260
261 if (priv->current_ht_config.is_ht)
262 priv->qos_data.def_qos_parm.qos_flags |= QOS_PARAM_FLG_TGN_MSK;
263
264 if (force || iwl_is_associated(priv)) {
265 IWL_DEBUG_QOS(priv, "send QoS cmd with Qos active=%d FLAGS=0x%X\n",
266 priv->qos_data.qos_active,
267 priv->qos_data.def_qos_parm.qos_flags);
268
269 iwl_send_cmd_pdu_async(priv, REPLY_QOS_PARAM,
270 sizeof(struct iwl_qosparam_cmd),
271 &priv->qos_data.def_qos_parm, NULL);
272 }
273 }
274 EXPORT_SYMBOL(iwl_activate_qos);
275
276 void iwl_reset_qos(struct iwl_priv *priv)
277 {
278 u16 cw_min = 15;
279 u16 cw_max = 1023;
280 u8 aifs = 2;
281 bool is_legacy = false;
282 unsigned long flags;
283 int i;
284
285 spin_lock_irqsave(&priv->lock, flags);
286 /* QoS always active in AP and ADHOC mode
287 * In STA mode wait for association
288 */
289 if (priv->iw_mode == NL80211_IFTYPE_ADHOC ||
290 priv->iw_mode == NL80211_IFTYPE_AP)
291 priv->qos_data.qos_active = 1;
292 else
293 priv->qos_data.qos_active = 0;
294
295 /* check for legacy mode */
296 if ((priv->iw_mode == NL80211_IFTYPE_ADHOC &&
297 (priv->active_rate & IWL_OFDM_RATES_MASK) == 0) ||
298 (priv->iw_mode == NL80211_IFTYPE_STATION &&
299 (priv->staging_rxon.flags & RXON_FLG_SHORT_SLOT_MSK) == 0)) {
300 cw_min = 31;
301 is_legacy = 1;
302 }
303
304 if (priv->qos_data.qos_active)
305 aifs = 3;
306
307 priv->qos_data.def_qos_parm.ac[0].cw_min = cpu_to_le16(cw_min);
308 priv->qos_data.def_qos_parm.ac[0].cw_max = cpu_to_le16(cw_max);
309 priv->qos_data.def_qos_parm.ac[0].aifsn = aifs;
310 priv->qos_data.def_qos_parm.ac[0].edca_txop = 0;
311 priv->qos_data.def_qos_parm.ac[0].reserved1 = 0;
312
313 if (priv->qos_data.qos_active) {
314 i = 1;
315 priv->qos_data.def_qos_parm.ac[i].cw_min = cpu_to_le16(cw_min);
316 priv->qos_data.def_qos_parm.ac[i].cw_max = cpu_to_le16(cw_max);
317 priv->qos_data.def_qos_parm.ac[i].aifsn = 7;
318 priv->qos_data.def_qos_parm.ac[i].edca_txop = 0;
319 priv->qos_data.def_qos_parm.ac[i].reserved1 = 0;
320
321 i = 2;
322 priv->qos_data.def_qos_parm.ac[i].cw_min =
323 cpu_to_le16((cw_min + 1) / 2 - 1);
324 priv->qos_data.def_qos_parm.ac[i].cw_max =
325 cpu_to_le16(cw_max);
326 priv->qos_data.def_qos_parm.ac[i].aifsn = 2;
327 if (is_legacy)
328 priv->qos_data.def_qos_parm.ac[i].edca_txop =
329 cpu_to_le16(6016);
330 else
331 priv->qos_data.def_qos_parm.ac[i].edca_txop =
332 cpu_to_le16(3008);
333 priv->qos_data.def_qos_parm.ac[i].reserved1 = 0;
334
335 i = 3;
336 priv->qos_data.def_qos_parm.ac[i].cw_min =
337 cpu_to_le16((cw_min + 1) / 4 - 1);
338 priv->qos_data.def_qos_parm.ac[i].cw_max =
339 cpu_to_le16((cw_max + 1) / 2 - 1);
340 priv->qos_data.def_qos_parm.ac[i].aifsn = 2;
341 priv->qos_data.def_qos_parm.ac[i].reserved1 = 0;
342 if (is_legacy)
343 priv->qos_data.def_qos_parm.ac[i].edca_txop =
344 cpu_to_le16(3264);
345 else
346 priv->qos_data.def_qos_parm.ac[i].edca_txop =
347 cpu_to_le16(1504);
348 } else {
349 for (i = 1; i < 4; i++) {
350 priv->qos_data.def_qos_parm.ac[i].cw_min =
351 cpu_to_le16(cw_min);
352 priv->qos_data.def_qos_parm.ac[i].cw_max =
353 cpu_to_le16(cw_max);
354 priv->qos_data.def_qos_parm.ac[i].aifsn = aifs;
355 priv->qos_data.def_qos_parm.ac[i].edca_txop = 0;
356 priv->qos_data.def_qos_parm.ac[i].reserved1 = 0;
357 }
358 }
359 IWL_DEBUG_QOS(priv, "set QoS to default \n");
360
361 spin_unlock_irqrestore(&priv->lock, flags);
362 }
363 EXPORT_SYMBOL(iwl_reset_qos);
364
365 #define MAX_BIT_RATE_40_MHZ 150 /* Mbps */
366 #define MAX_BIT_RATE_20_MHZ 72 /* Mbps */
367 static void iwlcore_init_ht_hw_capab(const struct iwl_priv *priv,
368 struct ieee80211_sta_ht_cap *ht_info,
369 enum ieee80211_band band)
370 {
371 u16 max_bit_rate = 0;
372 u8 rx_chains_num = priv->hw_params.rx_chains_num;
373 u8 tx_chains_num = priv->hw_params.tx_chains_num;
374
375 ht_info->cap = 0;
376 memset(&ht_info->mcs, 0, sizeof(ht_info->mcs));
377
378 ht_info->ht_supported = true;
379
380 ht_info->cap |= IEEE80211_HT_CAP_GRN_FLD;
381 ht_info->cap |= IEEE80211_HT_CAP_SGI_20;
382 ht_info->cap |= (IEEE80211_HT_CAP_SM_PS &
383 (WLAN_HT_CAP_SM_PS_DISABLED << 2));
384
385 max_bit_rate = MAX_BIT_RATE_20_MHZ;
386 if (priv->hw_params.fat_channel & BIT(band)) {
387 ht_info->cap |= IEEE80211_HT_CAP_SUP_WIDTH_20_40;
388 ht_info->cap |= IEEE80211_HT_CAP_SGI_40;
389 ht_info->mcs.rx_mask[4] = 0x01;
390 max_bit_rate = MAX_BIT_RATE_40_MHZ;
391 }
392
393 if (priv->cfg->mod_params->amsdu_size_8K)
394 ht_info->cap |= IEEE80211_HT_CAP_MAX_AMSDU;
395
396 ht_info->ampdu_factor = CFG_HT_RX_AMPDU_FACTOR_DEF;
397 ht_info->ampdu_density = CFG_HT_MPDU_DENSITY_DEF;
398
399 ht_info->mcs.rx_mask[0] = 0xFF;
400 if (rx_chains_num >= 2)
401 ht_info->mcs.rx_mask[1] = 0xFF;
402 if (rx_chains_num >= 3)
403 ht_info->mcs.rx_mask[2] = 0xFF;
404
405 /* Highest supported Rx data rate */
406 max_bit_rate *= rx_chains_num;
407 WARN_ON(max_bit_rate & ~IEEE80211_HT_MCS_RX_HIGHEST_MASK);
408 ht_info->mcs.rx_highest = cpu_to_le16(max_bit_rate);
409
410 /* Tx MCS capabilities */
411 ht_info->mcs.tx_params = IEEE80211_HT_MCS_TX_DEFINED;
412 if (tx_chains_num != rx_chains_num) {
413 ht_info->mcs.tx_params |= IEEE80211_HT_MCS_TX_RX_DIFF;
414 ht_info->mcs.tx_params |= ((tx_chains_num - 1) <<
415 IEEE80211_HT_MCS_TX_MAX_STREAMS_SHIFT);
416 }
417 }
418
419 static void iwlcore_init_hw_rates(struct iwl_priv *priv,
420 struct ieee80211_rate *rates)
421 {
422 int i;
423
424 for (i = 0; i < IWL_RATE_COUNT; i++) {
425 rates[i].bitrate = iwl_rates[i].ieee * 5;
426 rates[i].hw_value = i; /* Rate scaling will work on indexes */
427 rates[i].hw_value_short = i;
428 rates[i].flags = 0;
429 if ((i > IWL_LAST_OFDM_RATE) || (i < IWL_FIRST_OFDM_RATE)) {
430 /*
431 * If CCK != 1M then set short preamble rate flag.
432 */
433 rates[i].flags |=
434 (iwl_rates[i].plcp == IWL_RATE_1M_PLCP) ?
435 0 : IEEE80211_RATE_SHORT_PREAMBLE;
436 }
437 }
438 }
439
440
441 /**
442 * iwlcore_init_geos - Initialize mac80211's geo/channel info based from eeprom
443 */
444 int iwlcore_init_geos(struct iwl_priv *priv)
445 {
446 struct iwl_channel_info *ch;
447 struct ieee80211_supported_band *sband;
448 struct ieee80211_channel *channels;
449 struct ieee80211_channel *geo_ch;
450 struct ieee80211_rate *rates;
451 int i = 0;
452
453 if (priv->bands[IEEE80211_BAND_2GHZ].n_bitrates ||
454 priv->bands[IEEE80211_BAND_5GHZ].n_bitrates) {
455 IWL_DEBUG_INFO(priv, "Geography modes already initialized.\n");
456 set_bit(STATUS_GEO_CONFIGURED, &priv->status);
457 return 0;
458 }
459
460 channels = kzalloc(sizeof(struct ieee80211_channel) *
461 priv->channel_count, GFP_KERNEL);
462 if (!channels)
463 return -ENOMEM;
464
465 rates = kzalloc((sizeof(struct ieee80211_rate) * (IWL_RATE_COUNT + 1)),
466 GFP_KERNEL);
467 if (!rates) {
468 kfree(channels);
469 return -ENOMEM;
470 }
471
472 /* 5.2GHz channels start after the 2.4GHz channels */
473 sband = &priv->bands[IEEE80211_BAND_5GHZ];
474 sband->channels = &channels[ARRAY_SIZE(iwl_eeprom_band_1)];
475 /* just OFDM */
476 sband->bitrates = &rates[IWL_FIRST_OFDM_RATE];
477 sband->n_bitrates = IWL_RATE_COUNT - IWL_FIRST_OFDM_RATE;
478
479 if (priv->cfg->sku & IWL_SKU_N)
480 iwlcore_init_ht_hw_capab(priv, &sband->ht_cap,
481 IEEE80211_BAND_5GHZ);
482
483 sband = &priv->bands[IEEE80211_BAND_2GHZ];
484 sband->channels = channels;
485 /* OFDM & CCK */
486 sband->bitrates = rates;
487 sband->n_bitrates = IWL_RATE_COUNT;
488
489 if (priv->cfg->sku & IWL_SKU_N)
490 iwlcore_init_ht_hw_capab(priv, &sband->ht_cap,
491 IEEE80211_BAND_2GHZ);
492
493 priv->ieee_channels = channels;
494 priv->ieee_rates = rates;
495
496 for (i = 0; i < priv->channel_count; i++) {
497 ch = &priv->channel_info[i];
498
499 /* FIXME: might be removed if scan is OK */
500 if (!is_channel_valid(ch))
501 continue;
502
503 if (is_channel_a_band(ch))
504 sband = &priv->bands[IEEE80211_BAND_5GHZ];
505 else
506 sband = &priv->bands[IEEE80211_BAND_2GHZ];
507
508 geo_ch = &sband->channels[sband->n_channels++];
509
510 geo_ch->center_freq =
511 ieee80211_channel_to_frequency(ch->channel);
512 geo_ch->max_power = ch->max_power_avg;
513 geo_ch->max_antenna_gain = 0xff;
514 geo_ch->hw_value = ch->channel;
515
516 if (is_channel_valid(ch)) {
517 if (!(ch->flags & EEPROM_CHANNEL_IBSS))
518 geo_ch->flags |= IEEE80211_CHAN_NO_IBSS;
519
520 if (!(ch->flags & EEPROM_CHANNEL_ACTIVE))
521 geo_ch->flags |= IEEE80211_CHAN_PASSIVE_SCAN;
522
523 if (ch->flags & EEPROM_CHANNEL_RADAR)
524 geo_ch->flags |= IEEE80211_CHAN_RADAR;
525
526 geo_ch->flags |= ch->fat_extension_channel;
527
528 if (ch->max_power_avg > priv->tx_power_channel_lmt)
529 priv->tx_power_channel_lmt = ch->max_power_avg;
530 } else {
531 geo_ch->flags |= IEEE80211_CHAN_DISABLED;
532 }
533
534 /* Save flags for reg domain usage */
535 geo_ch->orig_flags = geo_ch->flags;
536
537 IWL_DEBUG_INFO(priv, "Channel %d Freq=%d[%sGHz] %s flag=0x%X\n",
538 ch->channel, geo_ch->center_freq,
539 is_channel_a_band(ch) ? "5.2" : "2.4",
540 geo_ch->flags & IEEE80211_CHAN_DISABLED ?
541 "restricted" : "valid",
542 geo_ch->flags);
543 }
544
545 if ((priv->bands[IEEE80211_BAND_5GHZ].n_channels == 0) &&
546 priv->cfg->sku & IWL_SKU_A) {
547 IWL_INFO(priv, "Incorrectly detected BG card as ABG. "
548 "Please send your PCI ID 0x%04X:0x%04X to maintainer.\n",
549 priv->pci_dev->device,
550 priv->pci_dev->subsystem_device);
551 priv->cfg->sku &= ~IWL_SKU_A;
552 }
553
554 IWL_INFO(priv, "Tunable channels: %d 802.11bg, %d 802.11a channels\n",
555 priv->bands[IEEE80211_BAND_2GHZ].n_channels,
556 priv->bands[IEEE80211_BAND_5GHZ].n_channels);
557
558 set_bit(STATUS_GEO_CONFIGURED, &priv->status);
559
560 return 0;
561 }
562 EXPORT_SYMBOL(iwlcore_init_geos);
563
564 /*
565 * iwlcore_free_geos - undo allocations in iwlcore_init_geos
566 */
567 void iwlcore_free_geos(struct iwl_priv *priv)
568 {
569 kfree(priv->ieee_channels);
570 kfree(priv->ieee_rates);
571 clear_bit(STATUS_GEO_CONFIGURED, &priv->status);
572 }
573 EXPORT_SYMBOL(iwlcore_free_geos);
574
575 static bool is_single_rx_stream(struct iwl_priv *priv)
576 {
577 return !priv->current_ht_config.is_ht ||
578 ((priv->current_ht_config.mcs.rx_mask[1] == 0) &&
579 (priv->current_ht_config.mcs.rx_mask[2] == 0));
580 }
581
582 static u8 iwl_is_channel_extension(struct iwl_priv *priv,
583 enum ieee80211_band band,
584 u16 channel, u8 extension_chan_offset)
585 {
586 const struct iwl_channel_info *ch_info;
587
588 ch_info = iwl_get_channel_info(priv, band, channel);
589 if (!is_channel_valid(ch_info))
590 return 0;
591
592 if (extension_chan_offset == IEEE80211_HT_PARAM_CHA_SEC_ABOVE)
593 return !(ch_info->fat_extension_channel &
594 IEEE80211_CHAN_NO_FAT_ABOVE);
595 else if (extension_chan_offset == IEEE80211_HT_PARAM_CHA_SEC_BELOW)
596 return !(ch_info->fat_extension_channel &
597 IEEE80211_CHAN_NO_FAT_BELOW);
598
599 return 0;
600 }
601
602 u8 iwl_is_fat_tx_allowed(struct iwl_priv *priv,
603 struct ieee80211_sta_ht_cap *sta_ht_inf)
604 {
605 struct iwl_ht_info *iwl_ht_conf = &priv->current_ht_config;
606
607 if ((!iwl_ht_conf->is_ht) ||
608 (iwl_ht_conf->supported_chan_width != IWL_CHANNEL_WIDTH_40MHZ) ||
609 (iwl_ht_conf->extension_chan_offset == IEEE80211_HT_PARAM_CHA_SEC_NONE))
610 return 0;
611
612 if (sta_ht_inf) {
613 if ((!sta_ht_inf->ht_supported) ||
614 (!(sta_ht_inf->cap & IEEE80211_HT_CAP_SUP_WIDTH_20_40)))
615 return 0;
616 }
617
618 return iwl_is_channel_extension(priv, priv->band,
619 le16_to_cpu(priv->staging_rxon.channel),
620 iwl_ht_conf->extension_chan_offset);
621 }
622 EXPORT_SYMBOL(iwl_is_fat_tx_allowed);
623
624 void iwl_set_rxon_hwcrypto(struct iwl_priv *priv, int hw_decrypt)
625 {
626 struct iwl_rxon_cmd *rxon = &priv->staging_rxon;
627
628 if (hw_decrypt)
629 rxon->filter_flags &= ~RXON_FILTER_DIS_DECRYPT_MSK;
630 else
631 rxon->filter_flags |= RXON_FILTER_DIS_DECRYPT_MSK;
632
633 }
634 EXPORT_SYMBOL(iwl_set_rxon_hwcrypto);
635
636 /**
637 * iwl_check_rxon_cmd - validate RXON structure is valid
638 *
639 * NOTE: This is really only useful during development and can eventually
640 * be #ifdef'd out once the driver is stable and folks aren't actively
641 * making changes
642 */
643 int iwl_check_rxon_cmd(struct iwl_priv *priv)
644 {
645 int error = 0;
646 int counter = 1;
647 struct iwl_rxon_cmd *rxon = &priv->staging_rxon;
648
649 if (rxon->flags & RXON_FLG_BAND_24G_MSK) {
650 error |= le32_to_cpu(rxon->flags &
651 (RXON_FLG_TGJ_NARROW_BAND_MSK |
652 RXON_FLG_RADAR_DETECT_MSK));
653 if (error)
654 IWL_WARN(priv, "check 24G fields %d | %d\n",
655 counter++, error);
656 } else {
657 error |= (rxon->flags & RXON_FLG_SHORT_SLOT_MSK) ?
658 0 : le32_to_cpu(RXON_FLG_SHORT_SLOT_MSK);
659 if (error)
660 IWL_WARN(priv, "check 52 fields %d | %d\n",
661 counter++, error);
662 error |= le32_to_cpu(rxon->flags & RXON_FLG_CCK_MSK);
663 if (error)
664 IWL_WARN(priv, "check 52 CCK %d | %d\n",
665 counter++, error);
666 }
667 error |= (rxon->node_addr[0] | rxon->bssid_addr[0]) & 0x1;
668 if (error)
669 IWL_WARN(priv, "check mac addr %d | %d\n", counter++, error);
670
671 /* make sure basic rates 6Mbps and 1Mbps are supported */
672 error |= (((rxon->ofdm_basic_rates & IWL_RATE_6M_MASK) == 0) &&
673 ((rxon->cck_basic_rates & IWL_RATE_1M_MASK) == 0));
674 if (error)
675 IWL_WARN(priv, "check basic rate %d | %d\n", counter++, error);
676
677 error |= (le16_to_cpu(rxon->assoc_id) > 2007);
678 if (error)
679 IWL_WARN(priv, "check assoc id %d | %d\n", counter++, error);
680
681 error |= ((rxon->flags & (RXON_FLG_CCK_MSK | RXON_FLG_SHORT_SLOT_MSK))
682 == (RXON_FLG_CCK_MSK | RXON_FLG_SHORT_SLOT_MSK));
683 if (error)
684 IWL_WARN(priv, "check CCK and short slot %d | %d\n",
685 counter++, error);
686
687 error |= ((rxon->flags & (RXON_FLG_CCK_MSK | RXON_FLG_AUTO_DETECT_MSK))
688 == (RXON_FLG_CCK_MSK | RXON_FLG_AUTO_DETECT_MSK));
689 if (error)
690 IWL_WARN(priv, "check CCK & auto detect %d | %d\n",
691 counter++, error);
692
693 error |= ((rxon->flags & (RXON_FLG_AUTO_DETECT_MSK |
694 RXON_FLG_TGG_PROTECT_MSK)) == RXON_FLG_TGG_PROTECT_MSK);
695 if (error)
696 IWL_WARN(priv, "check TGG and auto detect %d | %d\n",
697 counter++, error);
698
699 if (error)
700 IWL_WARN(priv, "Tuning to channel %d\n",
701 le16_to_cpu(rxon->channel));
702
703 if (error) {
704 IWL_ERR(priv, "Not a valid iwl_rxon_assoc_cmd field values\n");
705 return -1;
706 }
707 return 0;
708 }
709 EXPORT_SYMBOL(iwl_check_rxon_cmd);
710
711 /**
712 * iwl_full_rxon_required - check if full RXON (vs RXON_ASSOC) cmd is needed
713 * @priv: staging_rxon is compared to active_rxon
714 *
715 * If the RXON structure is changing enough to require a new tune,
716 * or is clearing the RXON_FILTER_ASSOC_MSK, then return 1 to indicate that
717 * a new tune (full RXON command, rather than RXON_ASSOC cmd) is required.
718 */
719 int iwl_full_rxon_required(struct iwl_priv *priv)
720 {
721
722 /* These items are only settable from the full RXON command */
723 if (!(iwl_is_associated(priv)) ||
724 compare_ether_addr(priv->staging_rxon.bssid_addr,
725 priv->active_rxon.bssid_addr) ||
726 compare_ether_addr(priv->staging_rxon.node_addr,
727 priv->active_rxon.node_addr) ||
728 compare_ether_addr(priv->staging_rxon.wlap_bssid_addr,
729 priv->active_rxon.wlap_bssid_addr) ||
730 (priv->staging_rxon.dev_type != priv->active_rxon.dev_type) ||
731 (priv->staging_rxon.channel != priv->active_rxon.channel) ||
732 (priv->staging_rxon.air_propagation !=
733 priv->active_rxon.air_propagation) ||
734 (priv->staging_rxon.ofdm_ht_single_stream_basic_rates !=
735 priv->active_rxon.ofdm_ht_single_stream_basic_rates) ||
736 (priv->staging_rxon.ofdm_ht_dual_stream_basic_rates !=
737 priv->active_rxon.ofdm_ht_dual_stream_basic_rates) ||
738 (priv->staging_rxon.assoc_id != priv->active_rxon.assoc_id))
739 return 1;
740
741 /* flags, filter_flags, ofdm_basic_rates, and cck_basic_rates can
742 * be updated with the RXON_ASSOC command -- however only some
743 * flag transitions are allowed using RXON_ASSOC */
744
745 /* Check if we are not switching bands */
746 if ((priv->staging_rxon.flags & RXON_FLG_BAND_24G_MSK) !=
747 (priv->active_rxon.flags & RXON_FLG_BAND_24G_MSK))
748 return 1;
749
750 /* Check if we are switching association toggle */
751 if ((priv->staging_rxon.filter_flags & RXON_FILTER_ASSOC_MSK) !=
752 (priv->active_rxon.filter_flags & RXON_FILTER_ASSOC_MSK))
753 return 1;
754
755 return 0;
756 }
757 EXPORT_SYMBOL(iwl_full_rxon_required);
758
759 u8 iwl_rate_get_lowest_plcp(struct iwl_priv *priv)
760 {
761 int i;
762 int rate_mask;
763
764 /* Set rate mask*/
765 if (priv->staging_rxon.flags & RXON_FLG_BAND_24G_MSK)
766 rate_mask = priv->active_rate_basic & IWL_CCK_RATES_MASK;
767 else
768 rate_mask = priv->active_rate_basic & IWL_OFDM_RATES_MASK;
769
770 /* Find lowest valid rate */
771 for (i = IWL_RATE_1M_INDEX; i != IWL_RATE_INVALID;
772 i = iwl_rates[i].next_ieee) {
773 if (rate_mask & (1 << i))
774 return iwl_rates[i].plcp;
775 }
776
777 /* No valid rate was found. Assign the lowest one */
778 if (priv->staging_rxon.flags & RXON_FLG_BAND_24G_MSK)
779 return IWL_RATE_1M_PLCP;
780 else
781 return IWL_RATE_6M_PLCP;
782 }
783 EXPORT_SYMBOL(iwl_rate_get_lowest_plcp);
784
785 void iwl_set_rxon_ht(struct iwl_priv *priv, struct iwl_ht_info *ht_info)
786 {
787 struct iwl_rxon_cmd *rxon = &priv->staging_rxon;
788 u32 val;
789
790 if (!ht_info->is_ht) {
791 rxon->flags &= ~(RXON_FLG_CHANNEL_MODE_MIXED_MSK |
792 RXON_FLG_CHANNEL_MODE_PURE_40_MSK |
793 RXON_FLG_CTRL_CHANNEL_LOC_HI_MSK |
794 RXON_FLG_FAT_PROT_MSK |
795 RXON_FLG_HT_PROT_MSK);
796 return;
797 }
798
799 /* Set up channel bandwidth: 20 MHz only, or 20/40 mixed if fat ok */
800 if (iwl_is_fat_tx_allowed(priv, NULL))
801 rxon->flags |= RXON_FLG_CHANNEL_MODE_MIXED_MSK;
802 else
803 rxon->flags &= ~(RXON_FLG_CHANNEL_MODE_MIXED_MSK |
804 RXON_FLG_CHANNEL_MODE_PURE_40_MSK);
805
806 /* Note: control channel is opposite of extension channel */
807 switch (ht_info->extension_chan_offset) {
808 case IEEE80211_HT_PARAM_CHA_SEC_ABOVE:
809 rxon->flags &= ~(RXON_FLG_CTRL_CHANNEL_LOC_HI_MSK);
810 break;
811 case IEEE80211_HT_PARAM_CHA_SEC_BELOW:
812 rxon->flags |= RXON_FLG_CTRL_CHANNEL_LOC_HI_MSK;
813 break;
814 case IEEE80211_HT_PARAM_CHA_SEC_NONE:
815 default:
816 rxon->flags &= ~RXON_FLG_CHANNEL_MODE_MIXED_MSK;
817 break;
818 }
819
820 val = ht_info->ht_protection;
821
822 rxon->flags |= cpu_to_le32(val << RXON_FLG_HT_OPERATING_MODE_POS);
823
824 if (priv->cfg->ops->hcmd->set_rxon_chain)
825 priv->cfg->ops->hcmd->set_rxon_chain(priv);
826
827 IWL_DEBUG_ASSOC(priv, "supported HT rate 0x%X 0x%X 0x%X "
828 "rxon flags 0x%X operation mode :0x%X "
829 "extension channel offset 0x%x\n",
830 ht_info->mcs.rx_mask[0],
831 ht_info->mcs.rx_mask[1],
832 ht_info->mcs.rx_mask[2],
833 le32_to_cpu(rxon->flags), ht_info->ht_protection,
834 ht_info->extension_chan_offset);
835 return;
836 }
837 EXPORT_SYMBOL(iwl_set_rxon_ht);
838
839 #define IWL_NUM_RX_CHAINS_MULTIPLE 3
840 #define IWL_NUM_RX_CHAINS_SINGLE 2
841 #define IWL_NUM_IDLE_CHAINS_DUAL 2
842 #define IWL_NUM_IDLE_CHAINS_SINGLE 1
843
844 /* Determine how many receiver/antenna chains to use.
845 * More provides better reception via diversity. Fewer saves power.
846 * MIMO (dual stream) requires at least 2, but works better with 3.
847 * This does not determine *which* chains to use, just how many.
848 */
849 static int iwl_get_active_rx_chain_count(struct iwl_priv *priv)
850 {
851 bool is_single = is_single_rx_stream(priv);
852 bool is_cam = !test_bit(STATUS_POWER_PMI, &priv->status);
853
854 /* # of Rx chains to use when expecting MIMO. */
855 if (is_single || (!is_cam && (priv->current_ht_config.sm_ps ==
856 WLAN_HT_CAP_SM_PS_STATIC)))
857 return IWL_NUM_RX_CHAINS_SINGLE;
858 else
859 return IWL_NUM_RX_CHAINS_MULTIPLE;
860 }
861
862 static int iwl_get_idle_rx_chain_count(struct iwl_priv *priv, int active_cnt)
863 {
864 int idle_cnt;
865 bool is_cam = !test_bit(STATUS_POWER_PMI, &priv->status);
866 /* # Rx chains when idling and maybe trying to save power */
867 switch (priv->current_ht_config.sm_ps) {
868 case WLAN_HT_CAP_SM_PS_STATIC:
869 case WLAN_HT_CAP_SM_PS_DYNAMIC:
870 idle_cnt = (is_cam) ? IWL_NUM_IDLE_CHAINS_DUAL :
871 IWL_NUM_IDLE_CHAINS_SINGLE;
872 break;
873 case WLAN_HT_CAP_SM_PS_DISABLED:
874 idle_cnt = (is_cam) ? active_cnt : IWL_NUM_IDLE_CHAINS_SINGLE;
875 break;
876 case WLAN_HT_CAP_SM_PS_INVALID:
877 default:
878 IWL_ERR(priv, "invalid mimo ps mode %d\n",
879 priv->current_ht_config.sm_ps);
880 WARN_ON(1);
881 idle_cnt = -1;
882 break;
883 }
884 return idle_cnt;
885 }
886
887 /* up to 4 chains */
888 static u8 iwl_count_chain_bitmap(u32 chain_bitmap)
889 {
890 u8 res;
891 res = (chain_bitmap & BIT(0)) >> 0;
892 res += (chain_bitmap & BIT(1)) >> 1;
893 res += (chain_bitmap & BIT(2)) >> 2;
894 res += (chain_bitmap & BIT(4)) >> 4;
895 return res;
896 }
897
898 /**
899 * iwl_is_monitor_mode - Determine if interface in monitor mode
900 *
901 * priv->iw_mode is set in add_interface, but add_interface is
902 * never called for monitor mode. The only way mac80211 informs us about
903 * monitor mode is through configuring filters (call to configure_filter).
904 */
905 static bool iwl_is_monitor_mode(struct iwl_priv *priv)
906 {
907 return !!(priv->staging_rxon.filter_flags & RXON_FILTER_PROMISC_MSK);
908 }
909
910 /**
911 * iwl_set_rxon_chain - Set up Rx chain usage in "staging" RXON image
912 *
913 * Selects how many and which Rx receivers/antennas/chains to use.
914 * This should not be used for scan command ... it puts data in wrong place.
915 */
916 void iwl_set_rxon_chain(struct iwl_priv *priv)
917 {
918 bool is_single = is_single_rx_stream(priv);
919 bool is_cam = !test_bit(STATUS_POWER_PMI, &priv->status);
920 u8 idle_rx_cnt, active_rx_cnt, valid_rx_cnt;
921 u32 active_chains;
922 u16 rx_chain;
923
924 /* Tell uCode which antennas are actually connected.
925 * Before first association, we assume all antennas are connected.
926 * Just after first association, iwl_chain_noise_calibration()
927 * checks which antennas actually *are* connected. */
928 if (priv->chain_noise_data.active_chains)
929 active_chains = priv->chain_noise_data.active_chains;
930 else
931 active_chains = priv->hw_params.valid_rx_ant;
932
933 rx_chain = active_chains << RXON_RX_CHAIN_VALID_POS;
934
935 /* How many receivers should we use? */
936 active_rx_cnt = iwl_get_active_rx_chain_count(priv);
937 idle_rx_cnt = iwl_get_idle_rx_chain_count(priv, active_rx_cnt);
938
939
940 /* correct rx chain count according hw settings
941 * and chain noise calibration
942 */
943 valid_rx_cnt = iwl_count_chain_bitmap(active_chains);
944 if (valid_rx_cnt < active_rx_cnt)
945 active_rx_cnt = valid_rx_cnt;
946
947 if (valid_rx_cnt < idle_rx_cnt)
948 idle_rx_cnt = valid_rx_cnt;
949
950 rx_chain |= active_rx_cnt << RXON_RX_CHAIN_MIMO_CNT_POS;
951 rx_chain |= idle_rx_cnt << RXON_RX_CHAIN_CNT_POS;
952
953 /* copied from 'iwl_bg_request_scan()' */
954 /* Force use of chains B and C (0x6) for Rx for 4965
955 * Avoid A (0x1) because of its off-channel reception on A-band.
956 * MIMO is not used here, but value is required */
957 if (iwl_is_monitor_mode(priv) &&
958 !(priv->staging_rxon.flags & RXON_FLG_BAND_24G_MSK) &&
959 ((priv->hw_rev & CSR_HW_REV_TYPE_MSK) == CSR_HW_REV_TYPE_4965)) {
960 rx_chain = 0x07 << RXON_RX_CHAIN_VALID_POS;
961 rx_chain |= 0x06 << RXON_RX_CHAIN_FORCE_SEL_POS;
962 rx_chain |= 0x07 << RXON_RX_CHAIN_FORCE_MIMO_SEL_POS;
963 rx_chain |= 0x01 << RXON_RX_CHAIN_DRIVER_FORCE_POS;
964 }
965
966 priv->staging_rxon.rx_chain = cpu_to_le16(rx_chain);
967
968 if (!is_single && (active_rx_cnt >= IWL_NUM_RX_CHAINS_SINGLE) && is_cam)
969 priv->staging_rxon.rx_chain |= RXON_RX_CHAIN_MIMO_FORCE_MSK;
970 else
971 priv->staging_rxon.rx_chain &= ~RXON_RX_CHAIN_MIMO_FORCE_MSK;
972
973 IWL_DEBUG_ASSOC(priv, "rx_chain=0x%X active=%d idle=%d\n",
974 priv->staging_rxon.rx_chain,
975 active_rx_cnt, idle_rx_cnt);
976
977 WARN_ON(active_rx_cnt == 0 || idle_rx_cnt == 0 ||
978 active_rx_cnt < idle_rx_cnt);
979 }
980 EXPORT_SYMBOL(iwl_set_rxon_chain);
981
982 /**
983 * iwl_set_rxon_channel - Set the phymode and channel values in staging RXON
984 * @phymode: MODE_IEEE80211A sets to 5.2GHz; all else set to 2.4GHz
985 * @channel: Any channel valid for the requested phymode
986
987 * In addition to setting the staging RXON, priv->phymode is also set.
988 *
989 * NOTE: Does not commit to the hardware; it sets appropriate bit fields
990 * in the staging RXON flag structure based on the phymode
991 */
992 int iwl_set_rxon_channel(struct iwl_priv *priv, struct ieee80211_channel *ch)
993 {
994 enum ieee80211_band band = ch->band;
995 u16 channel = ieee80211_frequency_to_channel(ch->center_freq);
996
997 if (!iwl_get_channel_info(priv, band, channel)) {
998 IWL_DEBUG_INFO(priv, "Could not set channel to %d [%d]\n",
999 channel, band);
1000 return -EINVAL;
1001 }
1002
1003 if ((le16_to_cpu(priv->staging_rxon.channel) == channel) &&
1004 (priv->band == band))
1005 return 0;
1006
1007 priv->staging_rxon.channel = cpu_to_le16(channel);
1008 if (band == IEEE80211_BAND_5GHZ)
1009 priv->staging_rxon.flags &= ~RXON_FLG_BAND_24G_MSK;
1010 else
1011 priv->staging_rxon.flags |= RXON_FLG_BAND_24G_MSK;
1012
1013 priv->band = band;
1014
1015 IWL_DEBUG_INFO(priv, "Staging channel set to %d [%d]\n", channel, band);
1016
1017 return 0;
1018 }
1019 EXPORT_SYMBOL(iwl_set_rxon_channel);
1020
1021 void iwl_set_flags_for_band(struct iwl_priv *priv,
1022 enum ieee80211_band band)
1023 {
1024 if (band == IEEE80211_BAND_5GHZ) {
1025 priv->staging_rxon.flags &=
1026 ~(RXON_FLG_BAND_24G_MSK | RXON_FLG_AUTO_DETECT_MSK
1027 | RXON_FLG_CCK_MSK);
1028 priv->staging_rxon.flags |= RXON_FLG_SHORT_SLOT_MSK;
1029 } else {
1030 /* Copied from iwl_post_associate() */
1031 if (priv->assoc_capability & WLAN_CAPABILITY_SHORT_SLOT_TIME)
1032 priv->staging_rxon.flags |= RXON_FLG_SHORT_SLOT_MSK;
1033 else
1034 priv->staging_rxon.flags &= ~RXON_FLG_SHORT_SLOT_MSK;
1035
1036 if (priv->iw_mode == NL80211_IFTYPE_ADHOC)
1037 priv->staging_rxon.flags &= ~RXON_FLG_SHORT_SLOT_MSK;
1038
1039 priv->staging_rxon.flags |= RXON_FLG_BAND_24G_MSK;
1040 priv->staging_rxon.flags |= RXON_FLG_AUTO_DETECT_MSK;
1041 priv->staging_rxon.flags &= ~RXON_FLG_CCK_MSK;
1042 }
1043 }
1044 EXPORT_SYMBOL(iwl_set_flags_for_band);
1045
1046 /*
1047 * initialize rxon structure with default values from eeprom
1048 */
1049 void iwl_connection_init_rx_config(struct iwl_priv *priv, int mode)
1050 {
1051 const struct iwl_channel_info *ch_info;
1052
1053 memset(&priv->staging_rxon, 0, sizeof(priv->staging_rxon));
1054
1055 switch (mode) {
1056 case NL80211_IFTYPE_AP:
1057 priv->staging_rxon.dev_type = RXON_DEV_TYPE_AP;
1058 break;
1059
1060 case NL80211_IFTYPE_STATION:
1061 priv->staging_rxon.dev_type = RXON_DEV_TYPE_ESS;
1062 priv->staging_rxon.filter_flags = RXON_FILTER_ACCEPT_GRP_MSK;
1063 break;
1064
1065 case NL80211_IFTYPE_ADHOC:
1066 priv->staging_rxon.dev_type = RXON_DEV_TYPE_IBSS;
1067 priv->staging_rxon.flags = RXON_FLG_SHORT_PREAMBLE_MSK;
1068 priv->staging_rxon.filter_flags = RXON_FILTER_BCON_AWARE_MSK |
1069 RXON_FILTER_ACCEPT_GRP_MSK;
1070 break;
1071
1072 case NL80211_IFTYPE_MONITOR:
1073 priv->staging_rxon.dev_type = RXON_DEV_TYPE_SNIFFER;
1074 priv->staging_rxon.filter_flags = RXON_FILTER_PROMISC_MSK |
1075 RXON_FILTER_CTL2HOST_MSK | RXON_FILTER_ACCEPT_GRP_MSK;
1076 break;
1077 default:
1078 IWL_ERR(priv, "Unsupported interface type %d\n", mode);
1079 break;
1080 }
1081
1082 #if 0
1083 /* TODO: Figure out when short_preamble would be set and cache from
1084 * that */
1085 if (!hw_to_local(priv->hw)->short_preamble)
1086 priv->staging_rxon.flags &= ~RXON_FLG_SHORT_PREAMBLE_MSK;
1087 else
1088 priv->staging_rxon.flags |= RXON_FLG_SHORT_PREAMBLE_MSK;
1089 #endif
1090
1091 ch_info = iwl_get_channel_info(priv, priv->band,
1092 le16_to_cpu(priv->active_rxon.channel));
1093
1094 if (!ch_info)
1095 ch_info = &priv->channel_info[0];
1096
1097 /*
1098 * in some case A channels are all non IBSS
1099 * in this case force B/G channel
1100 */
1101 if ((priv->iw_mode == NL80211_IFTYPE_ADHOC) &&
1102 !(is_channel_ibss(ch_info)))
1103 ch_info = &priv->channel_info[0];
1104
1105 priv->staging_rxon.channel = cpu_to_le16(ch_info->channel);
1106 priv->band = ch_info->band;
1107
1108 iwl_set_flags_for_band(priv, priv->band);
1109
1110 priv->staging_rxon.ofdm_basic_rates =
1111 (IWL_OFDM_RATES_MASK >> IWL_FIRST_OFDM_RATE) & 0xFF;
1112 priv->staging_rxon.cck_basic_rates =
1113 (IWL_CCK_RATES_MASK >> IWL_FIRST_CCK_RATE) & 0xF;
1114
1115 priv->staging_rxon.flags &= ~(RXON_FLG_CHANNEL_MODE_MIXED_MSK |
1116 RXON_FLG_CHANNEL_MODE_PURE_40_MSK);
1117 memcpy(priv->staging_rxon.node_addr, priv->mac_addr, ETH_ALEN);
1118 memcpy(priv->staging_rxon.wlap_bssid_addr, priv->mac_addr, ETH_ALEN);
1119 priv->staging_rxon.ofdm_ht_single_stream_basic_rates = 0xff;
1120 priv->staging_rxon.ofdm_ht_dual_stream_basic_rates = 0xff;
1121 priv->staging_rxon.ofdm_ht_triple_stream_basic_rates = 0xff;
1122 }
1123 EXPORT_SYMBOL(iwl_connection_init_rx_config);
1124
1125 void iwl_set_rate(struct iwl_priv *priv)
1126 {
1127 const struct ieee80211_supported_band *hw = NULL;
1128 struct ieee80211_rate *rate;
1129 int i;
1130
1131 hw = iwl_get_hw_mode(priv, priv->band);
1132 if (!hw) {
1133 IWL_ERR(priv, "Failed to set rate: unable to get hw mode\n");
1134 return;
1135 }
1136
1137 priv->active_rate = 0;
1138 priv->active_rate_basic = 0;
1139
1140 for (i = 0; i < hw->n_bitrates; i++) {
1141 rate = &(hw->bitrates[i]);
1142 if (rate->hw_value < IWL_RATE_COUNT)
1143 priv->active_rate |= (1 << rate->hw_value);
1144 }
1145
1146 IWL_DEBUG_RATE(priv, "Set active_rate = %0x, active_rate_basic = %0x\n",
1147 priv->active_rate, priv->active_rate_basic);
1148
1149 /*
1150 * If a basic rate is configured, then use it (adding IWL_RATE_1M_MASK)
1151 * otherwise set it to the default of all CCK rates and 6, 12, 24 for
1152 * OFDM
1153 */
1154 if (priv->active_rate_basic & IWL_CCK_BASIC_RATES_MASK)
1155 priv->staging_rxon.cck_basic_rates =
1156 ((priv->active_rate_basic &
1157 IWL_CCK_RATES_MASK) >> IWL_FIRST_CCK_RATE) & 0xF;
1158 else
1159 priv->staging_rxon.cck_basic_rates =
1160 (IWL_CCK_BASIC_RATES_MASK >> IWL_FIRST_CCK_RATE) & 0xF;
1161
1162 if (priv->active_rate_basic & IWL_OFDM_BASIC_RATES_MASK)
1163 priv->staging_rxon.ofdm_basic_rates =
1164 ((priv->active_rate_basic &
1165 (IWL_OFDM_BASIC_RATES_MASK | IWL_RATE_6M_MASK)) >>
1166 IWL_FIRST_OFDM_RATE) & 0xFF;
1167 else
1168 priv->staging_rxon.ofdm_basic_rates =
1169 (IWL_OFDM_BASIC_RATES_MASK >> IWL_FIRST_OFDM_RATE) & 0xFF;
1170 }
1171 EXPORT_SYMBOL(iwl_set_rate);
1172
1173 void iwl_rx_csa(struct iwl_priv *priv, struct iwl_rx_mem_buffer *rxb)
1174 {
1175 struct iwl_rx_packet *pkt = (struct iwl_rx_packet *)rxb->skb->data;
1176 struct iwl_rxon_cmd *rxon = (void *)&priv->active_rxon;
1177 struct iwl_csa_notification *csa = &(pkt->u.csa_notif);
1178 IWL_DEBUG_11H(priv, "CSA notif: channel %d, status %d\n",
1179 le16_to_cpu(csa->channel), le32_to_cpu(csa->status));
1180 rxon->channel = csa->channel;
1181 priv->staging_rxon.channel = csa->channel;
1182 }
1183 EXPORT_SYMBOL(iwl_rx_csa);
1184
1185 #ifdef CONFIG_IWLWIFI_DEBUG
1186 static void iwl_print_rx_config_cmd(struct iwl_priv *priv)
1187 {
1188 struct iwl_rxon_cmd *rxon = &priv->staging_rxon;
1189
1190 IWL_DEBUG_RADIO(priv, "RX CONFIG:\n");
1191 iwl_print_hex_dump(priv, IWL_DL_RADIO, (u8 *) rxon, sizeof(*rxon));
1192 IWL_DEBUG_RADIO(priv, "u16 channel: 0x%x\n", le16_to_cpu(rxon->channel));
1193 IWL_DEBUG_RADIO(priv, "u32 flags: 0x%08X\n", le32_to_cpu(rxon->flags));
1194 IWL_DEBUG_RADIO(priv, "u32 filter_flags: 0x%08x\n",
1195 le32_to_cpu(rxon->filter_flags));
1196 IWL_DEBUG_RADIO(priv, "u8 dev_type: 0x%x\n", rxon->dev_type);
1197 IWL_DEBUG_RADIO(priv, "u8 ofdm_basic_rates: 0x%02x\n",
1198 rxon->ofdm_basic_rates);
1199 IWL_DEBUG_RADIO(priv, "u8 cck_basic_rates: 0x%02x\n", rxon->cck_basic_rates);
1200 IWL_DEBUG_RADIO(priv, "u8[6] node_addr: %pM\n", rxon->node_addr);
1201 IWL_DEBUG_RADIO(priv, "u8[6] bssid_addr: %pM\n", rxon->bssid_addr);
1202 IWL_DEBUG_RADIO(priv, "u16 assoc_id: 0x%x\n", le16_to_cpu(rxon->assoc_id));
1203 }
1204 #endif
1205
1206 /**
1207 * iwl_irq_handle_error - called for HW or SW error interrupt from card
1208 */
1209 void iwl_irq_handle_error(struct iwl_priv *priv)
1210 {
1211 /* Set the FW error flag -- cleared on iwl_down */
1212 set_bit(STATUS_FW_ERROR, &priv->status);
1213
1214 /* Cancel currently queued command. */
1215 clear_bit(STATUS_HCMD_ACTIVE, &priv->status);
1216
1217 #ifdef CONFIG_IWLWIFI_DEBUG
1218 if (priv->debug_level & IWL_DL_FW_ERRORS) {
1219 iwl_dump_nic_error_log(priv);
1220 iwl_dump_nic_event_log(priv);
1221 iwl_print_rx_config_cmd(priv);
1222 }
1223 #endif
1224
1225 wake_up_interruptible(&priv->wait_command_queue);
1226
1227 /* Keep the restart process from trying to send host
1228 * commands by clearing the INIT status bit */
1229 clear_bit(STATUS_READY, &priv->status);
1230
1231 if (!test_bit(STATUS_EXIT_PENDING, &priv->status)) {
1232 IWL_DEBUG(priv, IWL_DL_FW_ERRORS,
1233 "Restarting adapter due to uCode error.\n");
1234
1235 if (iwl_is_associated(priv)) {
1236 memcpy(&priv->recovery_rxon, &priv->active_rxon,
1237 sizeof(priv->recovery_rxon));
1238 priv->error_recovering = 1;
1239 }
1240 if (priv->cfg->mod_params->restart_fw)
1241 queue_work(priv->workqueue, &priv->restart);
1242 }
1243 }
1244 EXPORT_SYMBOL(iwl_irq_handle_error);
1245
1246 void iwl_configure_filter(struct ieee80211_hw *hw,
1247 unsigned int changed_flags,
1248 unsigned int *total_flags,
1249 int mc_count, struct dev_addr_list *mc_list)
1250 {
1251 struct iwl_priv *priv = hw->priv;
1252 __le32 *filter_flags = &priv->staging_rxon.filter_flags;
1253
1254 IWL_DEBUG_MAC80211(priv, "Enter: changed: 0x%x, total: 0x%x\n",
1255 changed_flags, *total_flags);
1256
1257 if (changed_flags & (FIF_OTHER_BSS | FIF_PROMISC_IN_BSS)) {
1258 if (*total_flags & (FIF_OTHER_BSS | FIF_PROMISC_IN_BSS))
1259 *filter_flags |= RXON_FILTER_PROMISC_MSK;
1260 else
1261 *filter_flags &= ~RXON_FILTER_PROMISC_MSK;
1262 }
1263 if (changed_flags & FIF_ALLMULTI) {
1264 if (*total_flags & FIF_ALLMULTI)
1265 *filter_flags |= RXON_FILTER_ACCEPT_GRP_MSK;
1266 else
1267 *filter_flags &= ~RXON_FILTER_ACCEPT_GRP_MSK;
1268 }
1269 if (changed_flags & FIF_CONTROL) {
1270 if (*total_flags & FIF_CONTROL)
1271 *filter_flags |= RXON_FILTER_CTL2HOST_MSK;
1272 else
1273 *filter_flags &= ~RXON_FILTER_CTL2HOST_MSK;
1274 }
1275 if (changed_flags & FIF_BCN_PRBRESP_PROMISC) {
1276 if (*total_flags & FIF_BCN_PRBRESP_PROMISC)
1277 *filter_flags |= RXON_FILTER_BCON_AWARE_MSK;
1278 else
1279 *filter_flags &= ~RXON_FILTER_BCON_AWARE_MSK;
1280 }
1281
1282 /* We avoid iwl_commit_rxon here to commit the new filter flags
1283 * since mac80211 will call ieee80211_hw_config immediately.
1284 * (mc_list is not supported at this time). Otherwise, we need to
1285 * queue a background iwl_commit_rxon work.
1286 */
1287
1288 *total_flags &= FIF_OTHER_BSS | FIF_ALLMULTI | FIF_PROMISC_IN_BSS |
1289 FIF_BCN_PRBRESP_PROMISC | FIF_CONTROL;
1290 }
1291 EXPORT_SYMBOL(iwl_configure_filter);
1292
1293 int iwl_setup_mac(struct iwl_priv *priv)
1294 {
1295 int ret;
1296 struct ieee80211_hw *hw = priv->hw;
1297 hw->rate_control_algorithm = "iwl-agn-rs";
1298
1299 /* Tell mac80211 our characteristics */
1300 hw->flags = IEEE80211_HW_SIGNAL_DBM |
1301 IEEE80211_HW_NOISE_DBM |
1302 IEEE80211_HW_AMPDU_AGGREGATION |
1303 IEEE80211_HW_SPECTRUM_MGMT |
1304 IEEE80211_HW_SUPPORTS_PS;
1305 hw->wiphy->interface_modes =
1306 BIT(NL80211_IFTYPE_STATION) |
1307 BIT(NL80211_IFTYPE_ADHOC);
1308
1309 hw->wiphy->custom_regulatory = true;
1310 hw->wiphy->max_scan_ssids = 1;
1311 hw->wiphy->max_scan_ie_len = 0; /* XXX for now */
1312
1313 /* Default value; 4 EDCA QOS priorities */
1314 hw->queues = 4;
1315
1316 hw->conf.beacon_int = 100;
1317 hw->max_listen_interval = IWL_CONN_MAX_LISTEN_INTERVAL;
1318
1319 if (priv->bands[IEEE80211_BAND_2GHZ].n_channels)
1320 priv->hw->wiphy->bands[IEEE80211_BAND_2GHZ] =
1321 &priv->bands[IEEE80211_BAND_2GHZ];
1322 if (priv->bands[IEEE80211_BAND_5GHZ].n_channels)
1323 priv->hw->wiphy->bands[IEEE80211_BAND_5GHZ] =
1324 &priv->bands[IEEE80211_BAND_5GHZ];
1325
1326 ret = ieee80211_register_hw(priv->hw);
1327 if (ret) {
1328 IWL_ERR(priv, "Failed to register hw (error %d)\n", ret);
1329 return ret;
1330 }
1331 priv->mac80211_registered = 1;
1332
1333 return 0;
1334 }
1335 EXPORT_SYMBOL(iwl_setup_mac);
1336
1337 int iwl_set_hw_params(struct iwl_priv *priv)
1338 {
1339 priv->hw_params.sw_crypto = priv->cfg->mod_params->sw_crypto;
1340 priv->hw_params.max_rxq_size = RX_QUEUE_SIZE;
1341 priv->hw_params.max_rxq_log = RX_QUEUE_SIZE_LOG;
1342 if (priv->cfg->mod_params->amsdu_size_8K)
1343 priv->hw_params.rx_buf_size = IWL_RX_BUF_SIZE_8K;
1344 else
1345 priv->hw_params.rx_buf_size = IWL_RX_BUF_SIZE_4K;
1346 priv->hw_params.max_pkt_size = priv->hw_params.rx_buf_size - 256;
1347
1348 if (priv->cfg->mod_params->disable_11n)
1349 priv->cfg->sku &= ~IWL_SKU_N;
1350
1351 /* Device-specific setup */
1352 return priv->cfg->ops->lib->set_hw_params(priv);
1353 }
1354 EXPORT_SYMBOL(iwl_set_hw_params);
1355
1356 int iwl_init_drv(struct iwl_priv *priv)
1357 {
1358 int ret;
1359
1360 priv->ibss_beacon = NULL;
1361
1362 spin_lock_init(&priv->lock);
1363 spin_lock_init(&priv->power_data.lock);
1364 spin_lock_init(&priv->sta_lock);
1365 spin_lock_init(&priv->hcmd_lock);
1366
1367 INIT_LIST_HEAD(&priv->free_frames);
1368
1369 mutex_init(&priv->mutex);
1370
1371 /* Clear the driver's (not device's) station table */
1372 priv->cfg->ops->smgmt->clear_station_table(priv);
1373
1374 priv->data_retry_limit = -1;
1375 priv->ieee_channels = NULL;
1376 priv->ieee_rates = NULL;
1377 priv->band = IEEE80211_BAND_2GHZ;
1378
1379 priv->iw_mode = NL80211_IFTYPE_STATION;
1380
1381 priv->current_ht_config.sm_ps = WLAN_HT_CAP_SM_PS_DISABLED;
1382
1383 /* Choose which receivers/antennas to use */
1384 if (priv->cfg->ops->hcmd->set_rxon_chain)
1385 priv->cfg->ops->hcmd->set_rxon_chain(priv);
1386
1387 iwl_init_scan_params(priv);
1388
1389 iwl_reset_qos(priv);
1390
1391 priv->qos_data.qos_active = 0;
1392 priv->qos_data.qos_cap.val = 0;
1393
1394 priv->rates_mask = IWL_RATES_MASK;
1395 /* If power management is turned on, default to CAM mode */
1396 priv->power_mode = IWL_POWER_MODE_CAM;
1397 priv->tx_power_user_lmt = IWL_TX_POWER_TARGET_POWER_MAX;
1398
1399 ret = iwl_init_channel_map(priv);
1400 if (ret) {
1401 IWL_ERR(priv, "initializing regulatory failed: %d\n", ret);
1402 goto err;
1403 }
1404
1405 ret = iwlcore_init_geos(priv);
1406 if (ret) {
1407 IWL_ERR(priv, "initializing geos failed: %d\n", ret);
1408 goto err_free_channel_map;
1409 }
1410 iwlcore_init_hw_rates(priv, priv->ieee_rates);
1411
1412 return 0;
1413
1414 err_free_channel_map:
1415 iwl_free_channel_map(priv);
1416 err:
1417 return ret;
1418 }
1419 EXPORT_SYMBOL(iwl_init_drv);
1420
1421 int iwl_set_tx_power(struct iwl_priv *priv, s8 tx_power, bool force)
1422 {
1423 int ret = 0;
1424 if (tx_power < IWL_TX_POWER_TARGET_POWER_MIN) {
1425 IWL_WARN(priv, "Requested user TXPOWER %d below lower limit %d.\n",
1426 tx_power,
1427 IWL_TX_POWER_TARGET_POWER_MIN);
1428 return -EINVAL;
1429 }
1430
1431 if (tx_power > IWL_TX_POWER_TARGET_POWER_MAX) {
1432 IWL_WARN(priv, "Requested user TXPOWER %d above upper limit %d.\n",
1433 tx_power,
1434 IWL_TX_POWER_TARGET_POWER_MAX);
1435 return -EINVAL;
1436 }
1437
1438 if (priv->tx_power_user_lmt != tx_power)
1439 force = true;
1440
1441 priv->tx_power_user_lmt = tx_power;
1442
1443 /* if nic is not up don't send command */
1444 if (!iwl_is_ready_rf(priv))
1445 return ret;
1446
1447 if (force && priv->cfg->ops->lib->send_tx_power)
1448 ret = priv->cfg->ops->lib->send_tx_power(priv);
1449
1450 return ret;
1451 }
1452 EXPORT_SYMBOL(iwl_set_tx_power);
1453
1454 void iwl_uninit_drv(struct iwl_priv *priv)
1455 {
1456 iwl_calib_free_results(priv);
1457 iwlcore_free_geos(priv);
1458 iwl_free_channel_map(priv);
1459 kfree(priv->scan);
1460 }
1461 EXPORT_SYMBOL(iwl_uninit_drv);
1462
1463
1464 void iwl_disable_interrupts(struct iwl_priv *priv)
1465 {
1466 clear_bit(STATUS_INT_ENABLED, &priv->status);
1467
1468 /* disable interrupts from uCode/NIC to host */
1469 iwl_write32(priv, CSR_INT_MASK, 0x00000000);
1470
1471 /* acknowledge/clear/reset any interrupts still pending
1472 * from uCode or flow handler (Rx/Tx DMA) */
1473 iwl_write32(priv, CSR_INT, 0xffffffff);
1474 iwl_write32(priv, CSR_FH_INT_STATUS, 0xffffffff);
1475 IWL_DEBUG_ISR(priv, "Disabled interrupts\n");
1476 }
1477 EXPORT_SYMBOL(iwl_disable_interrupts);
1478
1479 void iwl_enable_interrupts(struct iwl_priv *priv)
1480 {
1481 IWL_DEBUG_ISR(priv, "Enabling interrupts\n");
1482 set_bit(STATUS_INT_ENABLED, &priv->status);
1483 iwl_write32(priv, CSR_INT_MASK, CSR_INI_SET_MASK);
1484 }
1485 EXPORT_SYMBOL(iwl_enable_interrupts);
1486
1487 irqreturn_t iwl_isr(int irq, void *data)
1488 {
1489 struct iwl_priv *priv = data;
1490 u32 inta, inta_mask;
1491 u32 inta_fh;
1492 if (!priv)
1493 return IRQ_NONE;
1494
1495 spin_lock(&priv->lock);
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:
1533 spin_unlock(&priv->lock);
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);
1541 spin_unlock(&priv->lock);
1542 return IRQ_NONE;
1543 }
1544 EXPORT_SYMBOL(iwl_isr);
1545
1546 int iwl_send_bt_config(struct iwl_priv *priv)
1547 {
1548 struct iwl_bt_cmd bt_cmd = {
1549 .flags = 3,
1550 .lead_time = 0xAA,
1551 .max_kill = 1,
1552 .kill_ack_mask = 0,
1553 .kill_cts_mask = 0,
1554 };
1555
1556 return iwl_send_cmd_pdu(priv, REPLY_BT_CONFIG,
1557 sizeof(struct iwl_bt_cmd), &bt_cmd);
1558 }
1559 EXPORT_SYMBOL(iwl_send_bt_config);
1560
1561 int iwl_send_statistics_request(struct iwl_priv *priv, u8 flags)
1562 {
1563 u32 stat_flags = 0;
1564 struct iwl_host_cmd cmd = {
1565 .id = REPLY_STATISTICS_CMD,
1566 .meta.flags = flags,
1567 .len = sizeof(stat_flags),
1568 .data = (u8 *) &stat_flags,
1569 };
1570 return iwl_send_cmd(priv, &cmd);
1571 }
1572 EXPORT_SYMBOL(iwl_send_statistics_request);
1573
1574 /**
1575 * iwl_verify_inst_sparse - verify runtime uCode image in card vs. host,
1576 * using sample data 100 bytes apart. If these sample points are good,
1577 * it's a pretty good bet that everything between them is good, too.
1578 */
1579 static int iwlcore_verify_inst_sparse(struct iwl_priv *priv, __le32 *image, u32 len)
1580 {
1581 u32 val;
1582 int ret = 0;
1583 u32 errcnt = 0;
1584 u32 i;
1585
1586 IWL_DEBUG_INFO(priv, "ucode inst image size is %u\n", len);
1587
1588 ret = iwl_grab_nic_access(priv);
1589 if (ret)
1590 return ret;
1591
1592 for (i = 0; i < len; i += 100, image += 100/sizeof(u32)) {
1593 /* read data comes through single port, auto-incr addr */
1594 /* NOTE: Use the debugless read so we don't flood kernel log
1595 * if IWL_DL_IO is set */
1596 iwl_write_direct32(priv, HBUS_TARG_MEM_RADDR,
1597 i + IWL49_RTC_INST_LOWER_BOUND);
1598 val = _iwl_read_direct32(priv, HBUS_TARG_MEM_RDAT);
1599 if (val != le32_to_cpu(*image)) {
1600 ret = -EIO;
1601 errcnt++;
1602 if (errcnt >= 3)
1603 break;
1604 }
1605 }
1606
1607 iwl_release_nic_access(priv);
1608
1609 return ret;
1610 }
1611
1612 /**
1613 * iwlcore_verify_inst_full - verify runtime uCode image in card vs. host,
1614 * looking at all data.
1615 */
1616 static int iwl_verify_inst_full(struct iwl_priv *priv, __le32 *image,
1617 u32 len)
1618 {
1619 u32 val;
1620 u32 save_len = len;
1621 int ret = 0;
1622 u32 errcnt;
1623
1624 IWL_DEBUG_INFO(priv, "ucode inst image size is %u\n", len);
1625
1626 ret = iwl_grab_nic_access(priv);
1627 if (ret)
1628 return ret;
1629
1630 iwl_write_direct32(priv, HBUS_TARG_MEM_RADDR,
1631 IWL49_RTC_INST_LOWER_BOUND);
1632
1633 errcnt = 0;
1634 for (; len > 0; len -= sizeof(u32), image++) {
1635 /* read data comes through single port, auto-incr addr */
1636 /* NOTE: Use the debugless read so we don't flood kernel log
1637 * if IWL_DL_IO is set */
1638 val = _iwl_read_direct32(priv, HBUS_TARG_MEM_RDAT);
1639 if (val != le32_to_cpu(*image)) {
1640 IWL_ERR(priv, "uCode INST section is invalid at "
1641 "offset 0x%x, is 0x%x, s/b 0x%x\n",
1642 save_len - len, val, le32_to_cpu(*image));
1643 ret = -EIO;
1644 errcnt++;
1645 if (errcnt >= 20)
1646 break;
1647 }
1648 }
1649
1650 iwl_release_nic_access(priv);
1651
1652 if (!errcnt)
1653 IWL_DEBUG_INFO(priv,
1654 "ucode image in INSTRUCTION memory is good\n");
1655
1656 return ret;
1657 }
1658
1659 /**
1660 * iwl_verify_ucode - determine which instruction image is in SRAM,
1661 * and verify its contents
1662 */
1663 int iwl_verify_ucode(struct iwl_priv *priv)
1664 {
1665 __le32 *image;
1666 u32 len;
1667 int ret;
1668
1669 /* Try bootstrap */
1670 image = (__le32 *)priv->ucode_boot.v_addr;
1671 len = priv->ucode_boot.len;
1672 ret = iwlcore_verify_inst_sparse(priv, image, len);
1673 if (!ret) {
1674 IWL_DEBUG_INFO(priv, "Bootstrap uCode is good in inst SRAM\n");
1675 return 0;
1676 }
1677
1678 /* Try initialize */
1679 image = (__le32 *)priv->ucode_init.v_addr;
1680 len = priv->ucode_init.len;
1681 ret = iwlcore_verify_inst_sparse(priv, image, len);
1682 if (!ret) {
1683 IWL_DEBUG_INFO(priv, "Initialize uCode is good in inst SRAM\n");
1684 return 0;
1685 }
1686
1687 /* Try runtime/protocol */
1688 image = (__le32 *)priv->ucode_code.v_addr;
1689 len = priv->ucode_code.len;
1690 ret = iwlcore_verify_inst_sparse(priv, image, len);
1691 if (!ret) {
1692 IWL_DEBUG_INFO(priv, "Runtime uCode is good in inst SRAM\n");
1693 return 0;
1694 }
1695
1696 IWL_ERR(priv, "NO VALID UCODE IMAGE IN INSTRUCTION SRAM!!\n");
1697
1698 /* Since nothing seems to match, show first several data entries in
1699 * instruction SRAM, so maybe visual inspection will give a clue.
1700 * Selection of bootstrap image (vs. other images) is arbitrary. */
1701 image = (__le32 *)priv->ucode_boot.v_addr;
1702 len = priv->ucode_boot.len;
1703 ret = iwl_verify_inst_full(priv, image, len);
1704
1705 return ret;
1706 }
1707 EXPORT_SYMBOL(iwl_verify_ucode);
1708
1709
1710 static const char *desc_lookup_text[] = {
1711 "OK",
1712 "FAIL",
1713 "BAD_PARAM",
1714 "BAD_CHECKSUM",
1715 "NMI_INTERRUPT_WDG",
1716 "SYSASSERT",
1717 "FATAL_ERROR",
1718 "BAD_COMMAND",
1719 "HW_ERROR_TUNE_LOCK",
1720 "HW_ERROR_TEMPERATURE",
1721 "ILLEGAL_CHAN_FREQ",
1722 "VCC_NOT_STABLE",
1723 "FH_ERROR",
1724 "NMI_INTERRUPT_HOST",
1725 "NMI_INTERRUPT_ACTION_PT",
1726 "NMI_INTERRUPT_UNKNOWN",
1727 "UCODE_VERSION_MISMATCH",
1728 "HW_ERROR_ABS_LOCK",
1729 "HW_ERROR_CAL_LOCK_FAIL",
1730 "NMI_INTERRUPT_INST_ACTION_PT",
1731 "NMI_INTERRUPT_DATA_ACTION_PT",
1732 "NMI_TRM_HW_ER",
1733 "NMI_INTERRUPT_TRM",
1734 "NMI_INTERRUPT_BREAK_POINT"
1735 "DEBUG_0",
1736 "DEBUG_1",
1737 "DEBUG_2",
1738 "DEBUG_3",
1739 "UNKNOWN"
1740 };
1741
1742 static const char *desc_lookup(int i)
1743 {
1744 int max = ARRAY_SIZE(desc_lookup_text) - 1;
1745
1746 if (i < 0 || i > max)
1747 i = max;
1748
1749 return desc_lookup_text[i];
1750 }
1751
1752 #define ERROR_START_OFFSET (1 * sizeof(u32))
1753 #define ERROR_ELEM_SIZE (7 * sizeof(u32))
1754
1755 void iwl_dump_nic_error_log(struct iwl_priv *priv)
1756 {
1757 u32 data2, line;
1758 u32 desc, time, count, base, data1;
1759 u32 blink1, blink2, ilink1, ilink2;
1760 int ret;
1761
1762 if (priv->ucode_type == UCODE_INIT)
1763 base = le32_to_cpu(priv->card_alive_init.error_event_table_ptr);
1764 else
1765 base = le32_to_cpu(priv->card_alive.error_event_table_ptr);
1766
1767 if (!priv->cfg->ops->lib->is_valid_rtc_data_addr(base)) {
1768 IWL_ERR(priv, "Not valid error log pointer 0x%08X\n", base);
1769 return;
1770 }
1771
1772 ret = iwl_grab_nic_access(priv);
1773 if (ret) {
1774 IWL_WARN(priv, "Can not read from adapter at this time.\n");
1775 return;
1776 }
1777
1778 count = iwl_read_targ_mem(priv, base);
1779
1780 if (ERROR_START_OFFSET <= count * ERROR_ELEM_SIZE) {
1781 IWL_ERR(priv, "Start IWL Error Log Dump:\n");
1782 IWL_ERR(priv, "Status: 0x%08lX, count: %d\n",
1783 priv->status, count);
1784 }
1785
1786 desc = iwl_read_targ_mem(priv, base + 1 * sizeof(u32));
1787 blink1 = iwl_read_targ_mem(priv, base + 3 * sizeof(u32));
1788 blink2 = iwl_read_targ_mem(priv, base + 4 * sizeof(u32));
1789 ilink1 = iwl_read_targ_mem(priv, base + 5 * sizeof(u32));
1790 ilink2 = iwl_read_targ_mem(priv, base + 6 * sizeof(u32));
1791 data1 = iwl_read_targ_mem(priv, base + 7 * sizeof(u32));
1792 data2 = iwl_read_targ_mem(priv, base + 8 * sizeof(u32));
1793 line = iwl_read_targ_mem(priv, base + 9 * sizeof(u32));
1794 time = iwl_read_targ_mem(priv, base + 11 * sizeof(u32));
1795
1796 IWL_ERR(priv, "Desc Time "
1797 "data1 data2 line\n");
1798 IWL_ERR(priv, "%-28s (#%02d) %010u 0x%08X 0x%08X %u\n",
1799 desc_lookup(desc), desc, time, data1, data2, line);
1800 IWL_ERR(priv, "blink1 blink2 ilink1 ilink2\n");
1801 IWL_ERR(priv, "0x%05X 0x%05X 0x%05X 0x%05X\n", blink1, blink2,
1802 ilink1, ilink2);
1803
1804 iwl_release_nic_access(priv);
1805 }
1806 EXPORT_SYMBOL(iwl_dump_nic_error_log);
1807
1808 #define EVENT_START_OFFSET (4 * sizeof(u32))
1809
1810 /**
1811 * iwl_print_event_log - Dump error event log to syslog
1812 *
1813 * NOTE: Must be called with iwl_grab_nic_access() already obtained!
1814 */
1815 static void iwl_print_event_log(struct iwl_priv *priv, u32 start_idx,
1816 u32 num_events, u32 mode)
1817 {
1818 u32 i;
1819 u32 base; /* SRAM byte address of event log header */
1820 u32 event_size; /* 2 u32s, or 3 u32s if timestamp recorded */
1821 u32 ptr; /* SRAM byte address of log data */
1822 u32 ev, time, data; /* event log data */
1823
1824 if (num_events == 0)
1825 return;
1826 if (priv->ucode_type == UCODE_INIT)
1827 base = le32_to_cpu(priv->card_alive_init.log_event_table_ptr);
1828 else
1829 base = le32_to_cpu(priv->card_alive.log_event_table_ptr);
1830
1831 if (mode == 0)
1832 event_size = 2 * sizeof(u32);
1833 else
1834 event_size = 3 * sizeof(u32);
1835
1836 ptr = base + EVENT_START_OFFSET + (start_idx * event_size);
1837
1838 /* "time" is actually "data" for mode 0 (no timestamp).
1839 * place event id # at far right for easier visual parsing. */
1840 for (i = 0; i < num_events; i++) {
1841 ev = iwl_read_targ_mem(priv, ptr);
1842 ptr += sizeof(u32);
1843 time = iwl_read_targ_mem(priv, ptr);
1844 ptr += sizeof(u32);
1845 if (mode == 0) {
1846 /* data, ev */
1847 IWL_ERR(priv, "EVT_LOG:0x%08x:%04u\n", time, ev);
1848 } else {
1849 data = iwl_read_targ_mem(priv, ptr);
1850 ptr += sizeof(u32);
1851 IWL_ERR(priv, "EVT_LOGT:%010u:0x%08x:%04u\n",
1852 time, data, ev);
1853 }
1854 }
1855 }
1856
1857 void iwl_dump_nic_event_log(struct iwl_priv *priv)
1858 {
1859 int ret;
1860 u32 base; /* SRAM byte address of event log header */
1861 u32 capacity; /* event log capacity in # entries */
1862 u32 mode; /* 0 - no timestamp, 1 - timestamp recorded */
1863 u32 num_wraps; /* # times uCode wrapped to top of log */
1864 u32 next_entry; /* index of next entry to be written by uCode */
1865 u32 size; /* # entries that we'll print */
1866
1867 if (priv->ucode_type == UCODE_INIT)
1868 base = le32_to_cpu(priv->card_alive_init.log_event_table_ptr);
1869 else
1870 base = le32_to_cpu(priv->card_alive.log_event_table_ptr);
1871
1872 if (!priv->cfg->ops->lib->is_valid_rtc_data_addr(base)) {
1873 IWL_ERR(priv, "Invalid event log pointer 0x%08X\n", base);
1874 return;
1875 }
1876
1877 ret = iwl_grab_nic_access(priv);
1878 if (ret) {
1879 IWL_WARN(priv, "Can not read from adapter at this time.\n");
1880 return;
1881 }
1882
1883 /* event log header */
1884 capacity = iwl_read_targ_mem(priv, base);
1885 mode = iwl_read_targ_mem(priv, base + (1 * sizeof(u32)));
1886 num_wraps = iwl_read_targ_mem(priv, base + (2 * sizeof(u32)));
1887 next_entry = iwl_read_targ_mem(priv, base + (3 * sizeof(u32)));
1888
1889 size = num_wraps ? capacity : next_entry;
1890
1891 /* bail out if nothing in log */
1892 if (size == 0) {
1893 IWL_ERR(priv, "Start IWL Event Log Dump: nothing in log\n");
1894 iwl_release_nic_access(priv);
1895 return;
1896 }
1897
1898 IWL_ERR(priv, "Start IWL Event Log Dump: display count %d, wraps %d\n",
1899 size, num_wraps);
1900
1901 /* if uCode has wrapped back to top of log, start at the oldest entry,
1902 * i.e the next one that uCode would fill. */
1903 if (num_wraps)
1904 iwl_print_event_log(priv, next_entry,
1905 capacity - next_entry, mode);
1906 /* (then/else) start at top of log */
1907 iwl_print_event_log(priv, 0, next_entry, mode);
1908
1909 iwl_release_nic_access(priv);
1910 }
1911 EXPORT_SYMBOL(iwl_dump_nic_event_log);
1912
1913 void iwl_rf_kill_ct_config(struct iwl_priv *priv)
1914 {
1915 struct iwl_ct_kill_config cmd;
1916 unsigned long flags;
1917 int ret = 0;
1918
1919 spin_lock_irqsave(&priv->lock, flags);
1920 iwl_write32(priv, CSR_UCODE_DRV_GP1_CLR,
1921 CSR_UCODE_DRV_GP1_REG_BIT_CT_KILL_EXIT);
1922 spin_unlock_irqrestore(&priv->lock, flags);
1923
1924 cmd.critical_temperature_R =
1925 cpu_to_le32(priv->hw_params.ct_kill_threshold);
1926
1927 ret = iwl_send_cmd_pdu(priv, REPLY_CT_KILL_CONFIG_CMD,
1928 sizeof(cmd), &cmd);
1929 if (ret)
1930 IWL_ERR(priv, "REPLY_CT_KILL_CONFIG_CMD failed\n");
1931 else
1932 IWL_DEBUG_INFO(priv, "REPLY_CT_KILL_CONFIG_CMD succeeded, "
1933 "critical temperature is %d\n",
1934 cmd.critical_temperature_R);
1935 }
1936 EXPORT_SYMBOL(iwl_rf_kill_ct_config);
1937
1938
1939 /*
1940 * CARD_STATE_CMD
1941 *
1942 * Use: Sets the device's internal card state to enable, disable, or halt
1943 *
1944 * When in the 'enable' state the card operates as normal.
1945 * When in the 'disable' state, the card enters into a low power mode.
1946 * When in the 'halt' state, the card is shut down and must be fully
1947 * restarted to come back on.
1948 */
1949 int iwl_send_card_state(struct iwl_priv *priv, u32 flags, u8 meta_flag)
1950 {
1951 struct iwl_host_cmd cmd = {
1952 .id = REPLY_CARD_STATE_CMD,
1953 .len = sizeof(u32),
1954 .data = &flags,
1955 .meta.flags = meta_flag,
1956 };
1957
1958 return iwl_send_cmd(priv, &cmd);
1959 }
1960 EXPORT_SYMBOL(iwl_send_card_state);
1961
1962 void iwl_radio_kill_sw_disable_radio(struct iwl_priv *priv)
1963 {
1964 unsigned long flags;
1965
1966 if (test_bit(STATUS_RF_KILL_SW, &priv->status))
1967 return;
1968
1969 IWL_DEBUG_RF_KILL(priv, "Manual SW RF KILL set to: RADIO OFF\n");
1970
1971 iwl_scan_cancel(priv);
1972 /* FIXME: This is a workaround for AP */
1973 if (priv->iw_mode != NL80211_IFTYPE_AP) {
1974 spin_lock_irqsave(&priv->lock, flags);
1975 iwl_write32(priv, CSR_UCODE_DRV_GP1_SET,
1976 CSR_UCODE_SW_BIT_RFKILL);
1977 spin_unlock_irqrestore(&priv->lock, flags);
1978 /* call the host command only if no hw rf-kill set */
1979 if (!test_bit(STATUS_RF_KILL_HW, &priv->status) &&
1980 iwl_is_ready(priv))
1981 iwl_send_card_state(priv,
1982 CARD_STATE_CMD_DISABLE, 0);
1983 set_bit(STATUS_RF_KILL_SW, &priv->status);
1984 /* make sure mac80211 stop sending Tx frame */
1985 if (priv->mac80211_registered)
1986 ieee80211_stop_queues(priv->hw);
1987 }
1988 }
1989 EXPORT_SYMBOL(iwl_radio_kill_sw_disable_radio);
1990
1991 int iwl_radio_kill_sw_enable_radio(struct iwl_priv *priv)
1992 {
1993 unsigned long flags;
1994
1995 if (!test_bit(STATUS_RF_KILL_SW, &priv->status))
1996 return 0;
1997
1998 IWL_DEBUG_RF_KILL(priv, "Manual SW RF KILL set to: RADIO ON\n");
1999
2000 spin_lock_irqsave(&priv->lock, flags);
2001 iwl_write32(priv, CSR_UCODE_DRV_GP1_CLR, CSR_UCODE_SW_BIT_RFKILL);
2002
2003 /* If the driver is up it will receive CARD_STATE_NOTIFICATION
2004 * notification where it will clear SW rfkill status.
2005 * Setting it here would break the handler. Only if the
2006 * interface is down we can set here since we don't
2007 * receive any further notification.
2008 */
2009 if (!priv->is_open)
2010 clear_bit(STATUS_RF_KILL_SW, &priv->status);
2011 spin_unlock_irqrestore(&priv->lock, flags);
2012
2013 /* wake up ucode */
2014 msleep(10);
2015
2016 spin_lock_irqsave(&priv->lock, flags);
2017 iwl_read32(priv, CSR_UCODE_DRV_GP1);
2018 if (!iwl_grab_nic_access(priv))
2019 iwl_release_nic_access(priv);
2020 spin_unlock_irqrestore(&priv->lock, flags);
2021
2022 if (test_bit(STATUS_RF_KILL_HW, &priv->status)) {
2023 IWL_DEBUG_RF_KILL(priv, "Can not turn radio back on - "
2024 "disabled by HW switch\n");
2025 return 0;
2026 }
2027
2028 /* when driver is up while rfkill is on, it wont receive
2029 * any CARD_STATE_NOTIFICATION notifications so we have to
2030 * restart it in here
2031 */
2032 if (priv->is_open && !test_bit(STATUS_ALIVE, &priv->status)) {
2033 clear_bit(STATUS_RF_KILL_SW, &priv->status);
2034 if (!iwl_is_rfkill(priv))
2035 queue_work(priv->workqueue, &priv->up);
2036 }
2037
2038 /* If the driver is already loaded, it will receive
2039 * CARD_STATE_NOTIFICATION notifications and the handler will
2040 * call restart to reload the driver.
2041 */
2042 return 1;
2043 }
2044 EXPORT_SYMBOL(iwl_radio_kill_sw_enable_radio);
2045
2046 void iwl_bg_rf_kill(struct work_struct *work)
2047 {
2048 struct iwl_priv *priv = container_of(work, struct iwl_priv, rf_kill);
2049
2050 wake_up_interruptible(&priv->wait_command_queue);
2051
2052 if (test_bit(STATUS_EXIT_PENDING, &priv->status))
2053 return;
2054
2055 mutex_lock(&priv->mutex);
2056
2057 if (!iwl_is_rfkill(priv)) {
2058 IWL_DEBUG_RF_KILL(priv,
2059 "HW and/or SW RF Kill no longer active, restarting "
2060 "device\n");
2061 if (!test_bit(STATUS_EXIT_PENDING, &priv->status) &&
2062 priv->is_open)
2063 queue_work(priv->workqueue, &priv->restart);
2064 } else {
2065 /* make sure mac80211 stop sending Tx frame */
2066 if (priv->mac80211_registered)
2067 ieee80211_stop_queues(priv->hw);
2068
2069 if (!test_bit(STATUS_RF_KILL_HW, &priv->status))
2070 IWL_DEBUG_RF_KILL(priv, "Can not turn radio back on - "
2071 "disabled by SW switch\n");
2072 else
2073 IWL_WARN(priv, "Radio Frequency Kill Switch is On:\n"
2074 "Kill switch must be turned off for "
2075 "wireless networking to work.\n");
2076 }
2077 mutex_unlock(&priv->mutex);
2078 iwl_rfkill_set_hw_state(priv);
2079 }
2080 EXPORT_SYMBOL(iwl_bg_rf_kill);
2081
2082 void iwl_rx_pm_sleep_notif(struct iwl_priv *priv,
2083 struct iwl_rx_mem_buffer *rxb)
2084 {
2085 #ifdef CONFIG_IWLWIFI_DEBUG
2086 struct iwl_rx_packet *pkt = (struct iwl_rx_packet *)rxb->skb->data;
2087 struct iwl_sleep_notification *sleep = &(pkt->u.sleep_notif);
2088 IWL_DEBUG_RX(priv, "sleep mode: %d, src: %d\n",
2089 sleep->pm_sleep_mode, sleep->pm_wakeup_src);
2090 #endif
2091 }
2092 EXPORT_SYMBOL(iwl_rx_pm_sleep_notif);
2093
2094 void iwl_rx_pm_debug_statistics_notif(struct iwl_priv *priv,
2095 struct iwl_rx_mem_buffer *rxb)
2096 {
2097 struct iwl_rx_packet *pkt = (struct iwl_rx_packet *)rxb->skb->data;
2098 IWL_DEBUG_RADIO(priv, "Dumping %d bytes of unhandled "
2099 "notification for %s:\n",
2100 le32_to_cpu(pkt->len), get_cmd_string(pkt->hdr.cmd));
2101 iwl_print_hex_dump(priv, IWL_DL_RADIO, pkt->u.raw, le32_to_cpu(pkt->len));
2102 }
2103 EXPORT_SYMBOL(iwl_rx_pm_debug_statistics_notif);
2104
2105 void iwl_rx_reply_error(struct iwl_priv *priv,
2106 struct iwl_rx_mem_buffer *rxb)
2107 {
2108 struct iwl_rx_packet *pkt = (struct iwl_rx_packet *)rxb->skb->data;
2109
2110 IWL_ERR(priv, "Error Reply type 0x%08X cmd %s (0x%02X) "
2111 "seq 0x%04X ser 0x%08X\n",
2112 le32_to_cpu(pkt->u.err_resp.error_type),
2113 get_cmd_string(pkt->u.err_resp.cmd_id),
2114 pkt->u.err_resp.cmd_id,
2115 le16_to_cpu(pkt->u.err_resp.bad_cmd_seq_num),
2116 le32_to_cpu(pkt->u.err_resp.error_info));
2117 }
2118 EXPORT_SYMBOL(iwl_rx_reply_error);
2119
2120 int iwl_mac_conf_tx(struct ieee80211_hw *hw, u16 queue,
2121 const struct ieee80211_tx_queue_params *params)
2122 {
2123 struct iwl_priv *priv = hw->priv;
2124 unsigned long flags;
2125 int q;
2126
2127 IWL_DEBUG_MAC80211(priv, "enter\n");
2128
2129 if (!iwl_is_ready_rf(priv)) {
2130 IWL_DEBUG_MAC80211(priv, "leave - RF not ready\n");
2131 return -EIO;
2132 }
2133
2134 if (queue >= AC_NUM) {
2135 IWL_DEBUG_MAC80211(priv, "leave - queue >= AC_NUM %d\n", queue);
2136 return 0;
2137 }
2138
2139 q = AC_NUM - 1 - queue;
2140
2141 spin_lock_irqsave(&priv->lock, flags);
2142
2143 priv->qos_data.def_qos_parm.ac[q].cw_min = cpu_to_le16(params->cw_min);
2144 priv->qos_data.def_qos_parm.ac[q].cw_max = cpu_to_le16(params->cw_max);
2145 priv->qos_data.def_qos_parm.ac[q].aifsn = params->aifs;
2146 priv->qos_data.def_qos_parm.ac[q].edca_txop =
2147 cpu_to_le16((params->txop * 32));
2148
2149 priv->qos_data.def_qos_parm.ac[q].reserved1 = 0;
2150 priv->qos_data.qos_active = 1;
2151
2152 if (priv->iw_mode == NL80211_IFTYPE_AP)
2153 iwl_activate_qos(priv, 1);
2154 else if (priv->assoc_id && iwl_is_associated(priv))
2155 iwl_activate_qos(priv, 0);
2156
2157 spin_unlock_irqrestore(&priv->lock, flags);
2158
2159 IWL_DEBUG_MAC80211(priv, "leave\n");
2160 return 0;
2161 }
2162 EXPORT_SYMBOL(iwl_mac_conf_tx);
2163
2164 static void iwl_ht_conf(struct iwl_priv *priv,
2165 struct ieee80211_bss_conf *bss_conf)
2166 {
2167 struct ieee80211_sta_ht_cap *ht_conf;
2168 struct iwl_ht_info *iwl_conf = &priv->current_ht_config;
2169 struct ieee80211_sta *sta;
2170
2171 IWL_DEBUG_MAC80211(priv, "enter: \n");
2172
2173 if (!iwl_conf->is_ht)
2174 return;
2175
2176
2177 /*
2178 * It is totally wrong to base global information on something
2179 * that is valid only when associated, alas, this driver works
2180 * that way and I don't know how to fix it.
2181 */
2182
2183 rcu_read_lock();
2184 sta = ieee80211_find_sta(priv->hw, priv->bssid);
2185 if (!sta) {
2186 rcu_read_unlock();
2187 return;
2188 }
2189 ht_conf = &sta->ht_cap;
2190
2191 if (ht_conf->cap & IEEE80211_HT_CAP_SGI_20)
2192 iwl_conf->sgf |= HT_SHORT_GI_20MHZ;
2193 if (ht_conf->cap & IEEE80211_HT_CAP_SGI_40)
2194 iwl_conf->sgf |= HT_SHORT_GI_40MHZ;
2195
2196 iwl_conf->is_green_field = !!(ht_conf->cap & IEEE80211_HT_CAP_GRN_FLD);
2197 iwl_conf->max_amsdu_size =
2198 !!(ht_conf->cap & IEEE80211_HT_CAP_MAX_AMSDU);
2199
2200 iwl_conf->supported_chan_width =
2201 !!(ht_conf->cap & IEEE80211_HT_CAP_SUP_WIDTH_20_40);
2202
2203 /*
2204 * XXX: The HT configuration needs to be moved into iwl_mac_config()
2205 * to be done there correctly.
2206 */
2207
2208 iwl_conf->extension_chan_offset = IEEE80211_HT_PARAM_CHA_SEC_NONE;
2209 if (conf_is_ht40_minus(&priv->hw->conf))
2210 iwl_conf->extension_chan_offset = IEEE80211_HT_PARAM_CHA_SEC_BELOW;
2211 else if (conf_is_ht40_plus(&priv->hw->conf))
2212 iwl_conf->extension_chan_offset = IEEE80211_HT_PARAM_CHA_SEC_ABOVE;
2213
2214 /* If no above or below channel supplied disable FAT channel */
2215 if (iwl_conf->extension_chan_offset != IEEE80211_HT_PARAM_CHA_SEC_ABOVE &&
2216 iwl_conf->extension_chan_offset != IEEE80211_HT_PARAM_CHA_SEC_BELOW)
2217 iwl_conf->supported_chan_width = 0;
2218
2219 iwl_conf->sm_ps = (u8)((ht_conf->cap & IEEE80211_HT_CAP_SM_PS) >> 2);
2220
2221 memcpy(&iwl_conf->mcs, &ht_conf->mcs, 16);
2222
2223 iwl_conf->tx_chan_width = iwl_conf->supported_chan_width != 0;
2224 iwl_conf->ht_protection =
2225 bss_conf->ht.operation_mode & IEEE80211_HT_OP_MODE_PROTECTION;
2226 iwl_conf->non_GF_STA_present =
2227 !!(bss_conf->ht.operation_mode & IEEE80211_HT_OP_MODE_NON_GF_STA_PRSNT);
2228
2229 rcu_read_unlock();
2230
2231 IWL_DEBUG_MAC80211(priv, "leave\n");
2232 }
2233
2234 #define IWL_DELAY_NEXT_SCAN_AFTER_ASSOC (HZ*6)
2235 void iwl_bss_info_changed(struct ieee80211_hw *hw,
2236 struct ieee80211_vif *vif,
2237 struct ieee80211_bss_conf *bss_conf,
2238 u32 changes)
2239 {
2240 struct iwl_priv *priv = hw->priv;
2241
2242 IWL_DEBUG_MAC80211(priv, "changes = 0x%X\n", changes);
2243
2244 if (changes & BSS_CHANGED_ERP_PREAMBLE) {
2245 IWL_DEBUG_MAC80211(priv, "ERP_PREAMBLE %d\n",
2246 bss_conf->use_short_preamble);
2247 if (bss_conf->use_short_preamble)
2248 priv->staging_rxon.flags |= RXON_FLG_SHORT_PREAMBLE_MSK;
2249 else
2250 priv->staging_rxon.flags &= ~RXON_FLG_SHORT_PREAMBLE_MSK;
2251 }
2252
2253 if (changes & BSS_CHANGED_ERP_CTS_PROT) {
2254 IWL_DEBUG_MAC80211(priv, "ERP_CTS %d\n", bss_conf->use_cts_prot);
2255 if (bss_conf->use_cts_prot && (priv->band != IEEE80211_BAND_5GHZ))
2256 priv->staging_rxon.flags |= RXON_FLG_TGG_PROTECT_MSK;
2257 else
2258 priv->staging_rxon.flags &= ~RXON_FLG_TGG_PROTECT_MSK;
2259 }
2260
2261 if (changes & BSS_CHANGED_HT) {
2262 iwl_ht_conf(priv, bss_conf);
2263
2264 if (priv->cfg->ops->hcmd->set_rxon_chain)
2265 priv->cfg->ops->hcmd->set_rxon_chain(priv);
2266 }
2267
2268 if (changes & BSS_CHANGED_ASSOC) {
2269 IWL_DEBUG_MAC80211(priv, "ASSOC %d\n", bss_conf->assoc);
2270 /* This should never happen as this function should
2271 * never be called from interrupt context. */
2272 if (WARN_ON_ONCE(in_interrupt()))
2273 return;
2274 if (bss_conf->assoc) {
2275 priv->assoc_id = bss_conf->aid;
2276 priv->beacon_int = bss_conf->beacon_int;
2277 priv->power_data.dtim_period = bss_conf->dtim_period;
2278 priv->timestamp = bss_conf->timestamp;
2279 priv->assoc_capability = bss_conf->assoc_capability;
2280
2281 /* we have just associated, don't start scan too early
2282 * leave time for EAPOL exchange to complete
2283 */
2284 priv->next_scan_jiffies = jiffies +
2285 IWL_DELAY_NEXT_SCAN_AFTER_ASSOC;
2286 mutex_lock(&priv->mutex);
2287 priv->cfg->ops->lib->post_associate(priv);
2288 mutex_unlock(&priv->mutex);
2289 } else {
2290 priv->assoc_id = 0;
2291 IWL_DEBUG_MAC80211(priv, "DISASSOC %d\n", bss_conf->assoc);
2292 }
2293 } else if (changes && iwl_is_associated(priv) && priv->assoc_id) {
2294 IWL_DEBUG_MAC80211(priv, "Associated Changes %d\n", changes);
2295 iwl_send_rxon_assoc(priv);
2296 }
2297
2298 }
2299 EXPORT_SYMBOL(iwl_bss_info_changed);
2300
2301 int iwl_mac_beacon_update(struct ieee80211_hw *hw, struct sk_buff *skb)
2302 {
2303 struct iwl_priv *priv = hw->priv;
2304 unsigned long flags;
2305 __le64 timestamp;
2306
2307 IWL_DEBUG_MAC80211(priv, "enter\n");
2308
2309 if (!iwl_is_ready_rf(priv)) {
2310 IWL_DEBUG_MAC80211(priv, "leave - RF not ready\n");
2311 return -EIO;
2312 }
2313
2314 if (priv->iw_mode != NL80211_IFTYPE_ADHOC) {
2315 IWL_DEBUG_MAC80211(priv, "leave - not IBSS\n");
2316 return -EIO;
2317 }
2318
2319 spin_lock_irqsave(&priv->lock, flags);
2320
2321 if (priv->ibss_beacon)
2322 dev_kfree_skb(priv->ibss_beacon);
2323
2324 priv->ibss_beacon = skb;
2325
2326 priv->assoc_id = 0;
2327 timestamp = ((struct ieee80211_mgmt *)skb->data)->u.beacon.timestamp;
2328 priv->timestamp = le64_to_cpu(timestamp);
2329
2330 IWL_DEBUG_MAC80211(priv, "leave\n");
2331 spin_unlock_irqrestore(&priv->lock, flags);
2332
2333 iwl_reset_qos(priv);
2334
2335 priv->cfg->ops->lib->post_associate(priv);
2336
2337
2338 return 0;
2339 }
2340 EXPORT_SYMBOL(iwl_mac_beacon_update);
2341
2342 int iwl_set_mode(struct iwl_priv *priv, int mode)
2343 {
2344 if (mode == NL80211_IFTYPE_ADHOC) {
2345 const struct iwl_channel_info *ch_info;
2346
2347 ch_info = iwl_get_channel_info(priv,
2348 priv->band,
2349 le16_to_cpu(priv->staging_rxon.channel));
2350
2351 if (!ch_info || !is_channel_ibss(ch_info)) {
2352 IWL_ERR(priv, "channel %d not IBSS channel\n",
2353 le16_to_cpu(priv->staging_rxon.channel));
2354 return -EINVAL;
2355 }
2356 }
2357
2358 iwl_connection_init_rx_config(priv, mode);
2359
2360 if (priv->cfg->ops->hcmd->set_rxon_chain)
2361 priv->cfg->ops->hcmd->set_rxon_chain(priv);
2362
2363 memcpy(priv->staging_rxon.node_addr, priv->mac_addr, ETH_ALEN);
2364
2365 priv->cfg->ops->smgmt->clear_station_table(priv);
2366
2367 /* dont commit rxon if rf-kill is on*/
2368 if (!iwl_is_ready_rf(priv))
2369 return -EAGAIN;
2370
2371 cancel_delayed_work(&priv->scan_check);
2372 if (iwl_scan_cancel_timeout(priv, 100)) {
2373 IWL_WARN(priv, "Aborted scan still in progress after 100ms\n");
2374 IWL_DEBUG_MAC80211(priv, "leaving - scan abort failed.\n");
2375 return -EAGAIN;
2376 }
2377
2378 iwlcore_commit_rxon(priv);
2379
2380 return 0;
2381 }
2382 EXPORT_SYMBOL(iwl_set_mode);
2383
2384 int iwl_mac_add_interface(struct ieee80211_hw *hw,
2385 struct ieee80211_if_init_conf *conf)
2386 {
2387 struct iwl_priv *priv = hw->priv;
2388 unsigned long flags;
2389
2390 IWL_DEBUG_MAC80211(priv, "enter: type %d\n", conf->type);
2391
2392 if (priv->vif) {
2393 IWL_DEBUG_MAC80211(priv, "leave - vif != NULL\n");
2394 return -EOPNOTSUPP;
2395 }
2396
2397 spin_lock_irqsave(&priv->lock, flags);
2398 priv->vif = conf->vif;
2399 priv->iw_mode = conf->type;
2400
2401 spin_unlock_irqrestore(&priv->lock, flags);
2402
2403 mutex_lock(&priv->mutex);
2404
2405 if (conf->mac_addr) {
2406 IWL_DEBUG_MAC80211(priv, "Set %pM\n", conf->mac_addr);
2407 memcpy(priv->mac_addr, conf->mac_addr, ETH_ALEN);
2408 }
2409
2410 if (iwl_set_mode(priv, conf->type) == -EAGAIN)
2411 /* we are not ready, will run again when ready */
2412 set_bit(STATUS_MODE_PENDING, &priv->status);
2413
2414 mutex_unlock(&priv->mutex);
2415
2416 IWL_DEBUG_MAC80211(priv, "leave\n");
2417 return 0;
2418 }
2419 EXPORT_SYMBOL(iwl_mac_add_interface);
2420
2421 void iwl_mac_remove_interface(struct ieee80211_hw *hw,
2422 struct ieee80211_if_init_conf *conf)
2423 {
2424 struct iwl_priv *priv = hw->priv;
2425
2426 IWL_DEBUG_MAC80211(priv, "enter\n");
2427
2428 mutex_lock(&priv->mutex);
2429
2430 if (iwl_is_ready_rf(priv)) {
2431 iwl_scan_cancel_timeout(priv, 100);
2432 priv->staging_rxon.filter_flags &= ~RXON_FILTER_ASSOC_MSK;
2433 iwlcore_commit_rxon(priv);
2434 }
2435 if (priv->vif == conf->vif) {
2436 priv->vif = NULL;
2437 memset(priv->bssid, 0, ETH_ALEN);
2438 }
2439 mutex_unlock(&priv->mutex);
2440
2441 IWL_DEBUG_MAC80211(priv, "leave\n");
2442
2443 }
2444 EXPORT_SYMBOL(iwl_mac_remove_interface);
2445
2446 /**
2447 * iwl_mac_config - mac80211 config callback
2448 *
2449 * We ignore conf->flags & IEEE80211_CONF_SHORT_SLOT_TIME since it seems to
2450 * be set inappropriately and the driver currently sets the hardware up to
2451 * use it whenever needed.
2452 */
2453 int iwl_mac_config(struct ieee80211_hw *hw, u32 changed)
2454 {
2455 struct iwl_priv *priv = hw->priv;
2456 const struct iwl_channel_info *ch_info;
2457 struct ieee80211_conf *conf = &hw->conf;
2458 unsigned long flags = 0;
2459 int ret = 0;
2460 u16 ch;
2461 int scan_active = 0;
2462
2463 mutex_lock(&priv->mutex);
2464
2465 if (!iwl_is_ready(priv)) {
2466 IWL_DEBUG_MAC80211(priv, "leave - not ready\n");
2467 ret = -EIO;
2468 goto out;
2469 }
2470
2471 IWL_DEBUG_MAC80211(priv, "enter to channel %d changed 0x%X\n",
2472 conf->channel->hw_value, changed);
2473
2474 if (unlikely(!priv->cfg->mod_params->disable_hw_scan &&
2475 test_bit(STATUS_SCANNING, &priv->status))) {
2476 scan_active = 1;
2477 IWL_DEBUG_MAC80211(priv, "leave - scanning\n");
2478 }
2479
2480
2481 /* during scanning mac80211 will delay channel setting until
2482 * scan finish with changed = 0
2483 */
2484 if (!changed || (changed & IEEE80211_CONF_CHANGE_CHANNEL)) {
2485 if (scan_active)
2486 goto set_ch_out;
2487
2488 ch = ieee80211_frequency_to_channel(conf->channel->center_freq);
2489 ch_info = iwl_get_channel_info(priv, conf->channel->band, ch);
2490 if (!is_channel_valid(ch_info)) {
2491 IWL_DEBUG_MAC80211(priv, "leave - invalid channel\n");
2492 ret = -EINVAL;
2493 goto set_ch_out;
2494 }
2495
2496 if (priv->iw_mode == NL80211_IFTYPE_ADHOC &&
2497 !is_channel_ibss(ch_info)) {
2498 IWL_ERR(priv, "channel %d in band %d not "
2499 "IBSS channel\n",
2500 conf->channel->hw_value, conf->channel->band);
2501 ret = -EINVAL;
2502 goto set_ch_out;
2503 }
2504
2505 priv->current_ht_config.is_ht = conf_is_ht(conf);
2506
2507 spin_lock_irqsave(&priv->lock, flags);
2508
2509
2510 /* if we are switching from ht to 2.4 clear flags
2511 * from any ht related info since 2.4 does not
2512 * support ht */
2513 if ((le16_to_cpu(priv->staging_rxon.channel) != ch))
2514 priv->staging_rxon.flags = 0;
2515
2516 iwl_set_rxon_channel(priv, conf->channel);
2517
2518 iwl_set_flags_for_band(priv, conf->channel->band);
2519 spin_unlock_irqrestore(&priv->lock, flags);
2520 set_ch_out:
2521 /* The list of supported rates and rate mask can be different
2522 * for each band; since the band may have changed, reset
2523 * the rate mask to what mac80211 lists */
2524 iwl_set_rate(priv);
2525 }
2526
2527 if (changed & IEEE80211_CONF_CHANGE_PS) {
2528 if (conf->flags & IEEE80211_CONF_PS)
2529 ret = iwl_power_set_user_mode(priv, IWL_POWER_INDEX_3);
2530 else
2531 ret = iwl_power_set_user_mode(priv, IWL_POWER_MODE_CAM);
2532 if (ret)
2533 IWL_DEBUG_MAC80211(priv, "Error setting power level\n");
2534
2535 }
2536
2537 if (changed & IEEE80211_CONF_CHANGE_POWER) {
2538 IWL_DEBUG_MAC80211(priv, "TX Power old=%d new=%d\n",
2539 priv->tx_power_user_lmt, conf->power_level);
2540
2541 iwl_set_tx_power(priv, conf->power_level, false);
2542 }
2543
2544 /* call to ensure that 4965 rx_chain is set properly in monitor mode */
2545 if (priv->cfg->ops->hcmd->set_rxon_chain)
2546 priv->cfg->ops->hcmd->set_rxon_chain(priv);
2547
2548 if (changed & IEEE80211_CONF_CHANGE_RADIO_ENABLED) {
2549 if (conf->radio_enabled &&
2550 iwl_radio_kill_sw_enable_radio(priv)) {
2551 IWL_DEBUG_MAC80211(priv, "leave - RF-KILL - "
2552 "waiting for uCode\n");
2553 goto out;
2554 }
2555
2556 if (!conf->radio_enabled)
2557 iwl_radio_kill_sw_disable_radio(priv);
2558 }
2559
2560 if (!conf->radio_enabled) {
2561 IWL_DEBUG_MAC80211(priv, "leave - radio disabled\n");
2562 goto out;
2563 }
2564
2565 if (scan_active)
2566 goto out;
2567
2568 if (memcmp(&priv->active_rxon,
2569 &priv->staging_rxon, sizeof(priv->staging_rxon)))
2570 iwlcore_commit_rxon(priv);
2571 else
2572 IWL_DEBUG_INFO(priv, "Not re-sending same RXON configuration.\n");
2573
2574
2575 out:
2576 IWL_DEBUG_MAC80211(priv, "leave\n");
2577 mutex_unlock(&priv->mutex);
2578 return ret;
2579 }
2580 EXPORT_SYMBOL(iwl_mac_config);
2581
2582 #ifdef CONFIG_PM
2583
2584 int iwl_pci_suspend(struct pci_dev *pdev, pm_message_t state)
2585 {
2586 struct iwl_priv *priv = pci_get_drvdata(pdev);
2587
2588 /*
2589 * This function is called when system goes into suspend state
2590 * mac80211 will call iwl_mac_stop() from the mac80211 suspend function
2591 * first but since iwl_mac_stop() has no knowledge of who the caller is,
2592 * it will not call apm_ops.stop() to stop the DMA operation.
2593 * Calling apm_ops.stop here to make sure we stop the DMA.
2594 */
2595 priv->cfg->ops->lib->apm_ops.stop(priv);
2596
2597 pci_save_state(pdev);
2598 pci_disable_device(pdev);
2599 pci_set_power_state(pdev, PCI_D3hot);
2600
2601 return 0;
2602 }
2603 EXPORT_SYMBOL(iwl_pci_suspend);
2604
2605 int iwl_pci_resume(struct pci_dev *pdev)
2606 {
2607 struct iwl_priv *priv = pci_get_drvdata(pdev);
2608 int ret;
2609
2610 pci_set_power_state(pdev, PCI_D0);
2611 ret = pci_enable_device(pdev);
2612 if (ret)
2613 return ret;
2614 pci_restore_state(pdev);
2615 iwl_enable_interrupts(priv);
2616
2617 return 0;
2618 }
2619 EXPORT_SYMBOL(iwl_pci_resume);
2620
2621 #endif /* CONFIG_PM */
Linux kernel - Deliverables
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