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iwlagn: fix null pointer access during ucode load on 1000
[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-power.h"
40 #include "iwl-sta.h"
41 #include "iwl-helpers.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 u32 iwl_debug_level;
63 EXPORT_SYMBOL(iwl_debug_level);
64
65 static irqreturn_t iwl_isr(int irq, void *data);
66
67 /*
68 * Parameter order:
69 * rate, ht rate, prev rate, next rate, prev tgg rate, next tgg rate
70 *
71 * If there isn't a valid next or previous rate then INV is used which
72 * maps to IWL_RATE_INVALID
73 *
74 */
75 const struct iwl_rate_info iwl_rates[IWL_RATE_COUNT] = {
76 IWL_DECLARE_RATE_INFO(1, INV, INV, 2, INV, 2, INV, 2), /* 1mbps */
77 IWL_DECLARE_RATE_INFO(2, INV, 1, 5, 1, 5, 1, 5), /* 2mbps */
78 IWL_DECLARE_RATE_INFO(5, INV, 2, 6, 2, 11, 2, 11), /*5.5mbps */
79 IWL_DECLARE_RATE_INFO(11, INV, 9, 12, 9, 12, 5, 18), /* 11mbps */
80 IWL_DECLARE_RATE_INFO(6, 6, 5, 9, 5, 11, 5, 11), /* 6mbps */
81 IWL_DECLARE_RATE_INFO(9, 6, 6, 11, 6, 11, 5, 11), /* 9mbps */
82 IWL_DECLARE_RATE_INFO(12, 12, 11, 18, 11, 18, 11, 18), /* 12mbps */
83 IWL_DECLARE_RATE_INFO(18, 18, 12, 24, 12, 24, 11, 24), /* 18mbps */
84 IWL_DECLARE_RATE_INFO(24, 24, 18, 36, 18, 36, 18, 36), /* 24mbps */
85 IWL_DECLARE_RATE_INFO(36, 36, 24, 48, 24, 48, 24, 48), /* 36mbps */
86 IWL_DECLARE_RATE_INFO(48, 48, 36, 54, 36, 54, 36, 54), /* 48mbps */
87 IWL_DECLARE_RATE_INFO(54, 54, 48, INV, 48, INV, 48, INV),/* 54mbps */
88 IWL_DECLARE_RATE_INFO(60, 60, 48, INV, 48, INV, 48, INV),/* 60mbps */
89 /* FIXME:RS: ^^ should be INV (legacy) */
90 };
91 EXPORT_SYMBOL(iwl_rates);
92
93 /**
94 * translate ucode response to mac80211 tx status control values
95 */
96 void iwl_hwrate_to_tx_control(struct iwl_priv *priv, u32 rate_n_flags,
97 struct ieee80211_tx_info *info)
98 {
99 int rate_index;
100 struct ieee80211_tx_rate *r = &info->control.rates[0];
101
102 info->antenna_sel_tx =
103 ((rate_n_flags & RATE_MCS_ANT_ABC_MSK) >> RATE_MCS_ANT_POS);
104 if (rate_n_flags & RATE_MCS_HT_MSK)
105 r->flags |= IEEE80211_TX_RC_MCS;
106 if (rate_n_flags & RATE_MCS_GF_MSK)
107 r->flags |= IEEE80211_TX_RC_GREEN_FIELD;
108 if (rate_n_flags & RATE_MCS_FAT_MSK)
109 r->flags |= IEEE80211_TX_RC_40_MHZ_WIDTH;
110 if (rate_n_flags & RATE_MCS_DUP_MSK)
111 r->flags |= IEEE80211_TX_RC_DUP_DATA;
112 if (rate_n_flags & RATE_MCS_SGI_MSK)
113 r->flags |= IEEE80211_TX_RC_SHORT_GI;
114 rate_index = iwl_hwrate_to_plcp_idx(rate_n_flags);
115 if (info->band == IEEE80211_BAND_5GHZ)
116 rate_index -= IWL_FIRST_OFDM_RATE;
117 r->idx = rate_index;
118 }
119 EXPORT_SYMBOL(iwl_hwrate_to_tx_control);
120
121 int iwl_hwrate_to_plcp_idx(u32 rate_n_flags)
122 {
123 int idx = 0;
124
125 /* HT rate format */
126 if (rate_n_flags & RATE_MCS_HT_MSK) {
127 idx = (rate_n_flags & 0xff);
128
129 if (idx >= IWL_RATE_MIMO3_6M_PLCP)
130 idx = idx - IWL_RATE_MIMO3_6M_PLCP;
131 else if (idx >= IWL_RATE_MIMO2_6M_PLCP)
132 idx = idx - IWL_RATE_MIMO2_6M_PLCP;
133
134 idx += IWL_FIRST_OFDM_RATE;
135 /* skip 9M not supported in ht*/
136 if (idx >= IWL_RATE_9M_INDEX)
137 idx += 1;
138 if ((idx >= IWL_FIRST_OFDM_RATE) && (idx <= IWL_LAST_OFDM_RATE))
139 return idx;
140
141 /* legacy rate format, search for match in table */
142 } else {
143 for (idx = 0; idx < ARRAY_SIZE(iwl_rates); idx++)
144 if (iwl_rates[idx].plcp == (rate_n_flags & 0xFF))
145 return idx;
146 }
147
148 return -1;
149 }
150 EXPORT_SYMBOL(iwl_hwrate_to_plcp_idx);
151
152 u8 iwl_toggle_tx_ant(struct iwl_priv *priv, u8 ant)
153 {
154 int i;
155 u8 ind = ant;
156 for (i = 0; i < RATE_ANT_NUM - 1; i++) {
157 ind = (ind + 1) < RATE_ANT_NUM ? ind + 1 : 0;
158 if (priv->hw_params.valid_tx_ant & BIT(ind))
159 return ind;
160 }
161 return ant;
162 }
163
164 const u8 iwl_bcast_addr[ETH_ALEN] = { 0xFF, 0xFF, 0xFF, 0xFF, 0xFF, 0xFF };
165 EXPORT_SYMBOL(iwl_bcast_addr);
166
167
168 /* This function both allocates and initializes hw and priv. */
169 struct ieee80211_hw *iwl_alloc_all(struct iwl_cfg *cfg,
170 struct ieee80211_ops *hw_ops)
171 {
172 struct iwl_priv *priv;
173
174 /* mac80211 allocates memory for this device instance, including
175 * space for this driver's private structure */
176 struct ieee80211_hw *hw =
177 ieee80211_alloc_hw(sizeof(struct iwl_priv), hw_ops);
178 if (hw == NULL) {
179 printk(KERN_ERR "%s: Can not allocate network device\n",
180 cfg->name);
181 goto out;
182 }
183
184 priv = hw->priv;
185 priv->hw = hw;
186
187 out:
188 return hw;
189 }
190 EXPORT_SYMBOL(iwl_alloc_all);
191
192 void iwl_hw_detect(struct iwl_priv *priv)
193 {
194 priv->hw_rev = _iwl_read32(priv, CSR_HW_REV);
195 priv->hw_wa_rev = _iwl_read32(priv, CSR_HW_REV_WA_REG);
196 pci_read_config_byte(priv->pci_dev, PCI_REVISION_ID, &priv->rev_id);
197 }
198 EXPORT_SYMBOL(iwl_hw_detect);
199
200 int iwl_hw_nic_init(struct iwl_priv *priv)
201 {
202 unsigned long flags;
203 struct iwl_rx_queue *rxq = &priv->rxq;
204 int ret;
205
206 /* nic_init */
207 spin_lock_irqsave(&priv->lock, flags);
208 priv->cfg->ops->lib->apm_ops.init(priv);
209 iwl_write32(priv, CSR_INT_COALESCING, 512 / 32);
210 spin_unlock_irqrestore(&priv->lock, flags);
211
212 ret = priv->cfg->ops->lib->apm_ops.set_pwr_src(priv, IWL_PWR_SRC_VMAIN);
213
214 priv->cfg->ops->lib->apm_ops.config(priv);
215
216 /* Allocate the RX queue, or reset if it is already allocated */
217 if (!rxq->bd) {
218 ret = iwl_rx_queue_alloc(priv);
219 if (ret) {
220 IWL_ERR(priv, "Unable to initialize Rx queue\n");
221 return -ENOMEM;
222 }
223 } else
224 iwl_rx_queue_reset(priv, rxq);
225
226 iwl_rx_replenish(priv);
227
228 iwl_rx_init(priv, rxq);
229
230 spin_lock_irqsave(&priv->lock, flags);
231
232 rxq->need_update = 1;
233 iwl_rx_queue_update_write_ptr(priv, rxq);
234
235 spin_unlock_irqrestore(&priv->lock, flags);
236
237 /* Allocate and init all Tx and Command queues */
238 ret = iwl_txq_ctx_reset(priv);
239 if (ret)
240 return ret;
241
242 set_bit(STATUS_INIT, &priv->status);
243
244 return 0;
245 }
246 EXPORT_SYMBOL(iwl_hw_nic_init);
247
248 /*
249 * QoS support
250 */
251 void iwl_activate_qos(struct iwl_priv *priv, u8 force)
252 {
253 if (test_bit(STATUS_EXIT_PENDING, &priv->status))
254 return;
255
256 priv->qos_data.def_qos_parm.qos_flags = 0;
257
258 if (priv->qos_data.qos_cap.q_AP.queue_request &&
259 !priv->qos_data.qos_cap.q_AP.txop_request)
260 priv->qos_data.def_qos_parm.qos_flags |=
261 QOS_PARAM_FLG_TXOP_TYPE_MSK;
262 if (priv->qos_data.qos_active)
263 priv->qos_data.def_qos_parm.qos_flags |=
264 QOS_PARAM_FLG_UPDATE_EDCA_MSK;
265
266 if (priv->current_ht_config.is_ht)
267 priv->qos_data.def_qos_parm.qos_flags |= QOS_PARAM_FLG_TGN_MSK;
268
269 if (force || iwl_is_associated(priv)) {
270 IWL_DEBUG_QOS(priv, "send QoS cmd with Qos active=%d FLAGS=0x%X\n",
271 priv->qos_data.qos_active,
272 priv->qos_data.def_qos_parm.qos_flags);
273
274 iwl_send_cmd_pdu_async(priv, REPLY_QOS_PARAM,
275 sizeof(struct iwl_qosparam_cmd),
276 &priv->qos_data.def_qos_parm, NULL);
277 }
278 }
279 EXPORT_SYMBOL(iwl_activate_qos);
280
281 /*
282 * AC CWmin CW max AIFSN TXOP Limit TXOP Limit
283 * (802.11b) (802.11a/g)
284 * AC_BK 15 1023 7 0 0
285 * AC_BE 15 1023 3 0 0
286 * AC_VI 7 15 2 6.016ms 3.008ms
287 * AC_VO 3 7 2 3.264ms 1.504ms
288 */
289 void iwl_reset_qos(struct iwl_priv *priv)
290 {
291 u16 cw_min = 15;
292 u16 cw_max = 1023;
293 u8 aifs = 2;
294 bool is_legacy = false;
295 unsigned long flags;
296 int i;
297
298 spin_lock_irqsave(&priv->lock, flags);
299 /* QoS always active in AP and ADHOC mode
300 * In STA mode wait for association
301 */
302 if (priv->iw_mode == NL80211_IFTYPE_ADHOC ||
303 priv->iw_mode == NL80211_IFTYPE_AP)
304 priv->qos_data.qos_active = 1;
305 else
306 priv->qos_data.qos_active = 0;
307
308 /* check for legacy mode */
309 if ((priv->iw_mode == NL80211_IFTYPE_ADHOC &&
310 (priv->active_rate & IWL_OFDM_RATES_MASK) == 0) ||
311 (priv->iw_mode == NL80211_IFTYPE_STATION &&
312 (priv->staging_rxon.flags & RXON_FLG_SHORT_SLOT_MSK) == 0)) {
313 cw_min = 31;
314 is_legacy = 1;
315 }
316
317 if (priv->qos_data.qos_active)
318 aifs = 3;
319
320 /* AC_BE */
321 priv->qos_data.def_qos_parm.ac[0].cw_min = cpu_to_le16(cw_min);
322 priv->qos_data.def_qos_parm.ac[0].cw_max = cpu_to_le16(cw_max);
323 priv->qos_data.def_qos_parm.ac[0].aifsn = aifs;
324 priv->qos_data.def_qos_parm.ac[0].edca_txop = 0;
325 priv->qos_data.def_qos_parm.ac[0].reserved1 = 0;
326
327 if (priv->qos_data.qos_active) {
328 /* AC_BK */
329 i = 1;
330 priv->qos_data.def_qos_parm.ac[i].cw_min = cpu_to_le16(cw_min);
331 priv->qos_data.def_qos_parm.ac[i].cw_max = cpu_to_le16(cw_max);
332 priv->qos_data.def_qos_parm.ac[i].aifsn = 7;
333 priv->qos_data.def_qos_parm.ac[i].edca_txop = 0;
334 priv->qos_data.def_qos_parm.ac[i].reserved1 = 0;
335
336 /* AC_VI */
337 i = 2;
338 priv->qos_data.def_qos_parm.ac[i].cw_min =
339 cpu_to_le16((cw_min + 1) / 2 - 1);
340 priv->qos_data.def_qos_parm.ac[i].cw_max =
341 cpu_to_le16(cw_min);
342 priv->qos_data.def_qos_parm.ac[i].aifsn = 2;
343 if (is_legacy)
344 priv->qos_data.def_qos_parm.ac[i].edca_txop =
345 cpu_to_le16(6016);
346 else
347 priv->qos_data.def_qos_parm.ac[i].edca_txop =
348 cpu_to_le16(3008);
349 priv->qos_data.def_qos_parm.ac[i].reserved1 = 0;
350
351 /* AC_VO */
352 i = 3;
353 priv->qos_data.def_qos_parm.ac[i].cw_min =
354 cpu_to_le16((cw_min + 1) / 4 - 1);
355 priv->qos_data.def_qos_parm.ac[i].cw_max =
356 cpu_to_le16((cw_min + 1) / 2 - 1);
357 priv->qos_data.def_qos_parm.ac[i].aifsn = 2;
358 priv->qos_data.def_qos_parm.ac[i].reserved1 = 0;
359 if (is_legacy)
360 priv->qos_data.def_qos_parm.ac[i].edca_txop =
361 cpu_to_le16(3264);
362 else
363 priv->qos_data.def_qos_parm.ac[i].edca_txop =
364 cpu_to_le16(1504);
365 } else {
366 for (i = 1; i < 4; i++) {
367 priv->qos_data.def_qos_parm.ac[i].cw_min =
368 cpu_to_le16(cw_min);
369 priv->qos_data.def_qos_parm.ac[i].cw_max =
370 cpu_to_le16(cw_max);
371 priv->qos_data.def_qos_parm.ac[i].aifsn = aifs;
372 priv->qos_data.def_qos_parm.ac[i].edca_txop = 0;
373 priv->qos_data.def_qos_parm.ac[i].reserved1 = 0;
374 }
375 }
376 IWL_DEBUG_QOS(priv, "set QoS to default \n");
377
378 spin_unlock_irqrestore(&priv->lock, flags);
379 }
380 EXPORT_SYMBOL(iwl_reset_qos);
381
382 #define MAX_BIT_RATE_40_MHZ 150 /* Mbps */
383 #define MAX_BIT_RATE_20_MHZ 72 /* Mbps */
384 static void iwlcore_init_ht_hw_capab(const struct iwl_priv *priv,
385 struct ieee80211_sta_ht_cap *ht_info,
386 enum ieee80211_band band)
387 {
388 u16 max_bit_rate = 0;
389 u8 rx_chains_num = priv->hw_params.rx_chains_num;
390 u8 tx_chains_num = priv->hw_params.tx_chains_num;
391
392 ht_info->cap = 0;
393 memset(&ht_info->mcs, 0, sizeof(ht_info->mcs));
394
395 ht_info->ht_supported = true;
396
397 ht_info->cap |= IEEE80211_HT_CAP_GRN_FLD;
398 ht_info->cap |= IEEE80211_HT_CAP_SGI_20;
399 ht_info->cap |= (IEEE80211_HT_CAP_SM_PS &
400 (WLAN_HT_CAP_SM_PS_DISABLED << 2));
401
402 max_bit_rate = MAX_BIT_RATE_20_MHZ;
403 if (priv->hw_params.fat_channel & BIT(band)) {
404 ht_info->cap |= IEEE80211_HT_CAP_SUP_WIDTH_20_40;
405 ht_info->cap |= IEEE80211_HT_CAP_SGI_40;
406 ht_info->mcs.rx_mask[4] = 0x01;
407 max_bit_rate = MAX_BIT_RATE_40_MHZ;
408 }
409
410 if (priv->cfg->mod_params->amsdu_size_8K)
411 ht_info->cap |= IEEE80211_HT_CAP_MAX_AMSDU;
412
413 ht_info->ampdu_factor = CFG_HT_RX_AMPDU_FACTOR_DEF;
414 ht_info->ampdu_density = CFG_HT_MPDU_DENSITY_DEF;
415
416 ht_info->mcs.rx_mask[0] = 0xFF;
417 if (rx_chains_num >= 2)
418 ht_info->mcs.rx_mask[1] = 0xFF;
419 if (rx_chains_num >= 3)
420 ht_info->mcs.rx_mask[2] = 0xFF;
421
422 /* Highest supported Rx data rate */
423 max_bit_rate *= rx_chains_num;
424 WARN_ON(max_bit_rate & ~IEEE80211_HT_MCS_RX_HIGHEST_MASK);
425 ht_info->mcs.rx_highest = cpu_to_le16(max_bit_rate);
426
427 /* Tx MCS capabilities */
428 ht_info->mcs.tx_params = IEEE80211_HT_MCS_TX_DEFINED;
429 if (tx_chains_num != rx_chains_num) {
430 ht_info->mcs.tx_params |= IEEE80211_HT_MCS_TX_RX_DIFF;
431 ht_info->mcs.tx_params |= ((tx_chains_num - 1) <<
432 IEEE80211_HT_MCS_TX_MAX_STREAMS_SHIFT);
433 }
434 }
435
436 static void iwlcore_init_hw_rates(struct iwl_priv *priv,
437 struct ieee80211_rate *rates)
438 {
439 int i;
440
441 for (i = 0; i < IWL_RATE_COUNT; i++) {
442 rates[i].bitrate = iwl_rates[i].ieee * 5;
443 rates[i].hw_value = i; /* Rate scaling will work on indexes */
444 rates[i].hw_value_short = i;
445 rates[i].flags = 0;
446 if ((i > IWL_LAST_OFDM_RATE) || (i < IWL_FIRST_OFDM_RATE)) {
447 /*
448 * If CCK != 1M then set short preamble rate flag.
449 */
450 rates[i].flags |=
451 (iwl_rates[i].plcp == IWL_RATE_1M_PLCP) ?
452 0 : IEEE80211_RATE_SHORT_PREAMBLE;
453 }
454 }
455 }
456
457
458 /**
459 * iwlcore_init_geos - Initialize mac80211's geo/channel info based from eeprom
460 */
461 int iwlcore_init_geos(struct iwl_priv *priv)
462 {
463 struct iwl_channel_info *ch;
464 struct ieee80211_supported_band *sband;
465 struct ieee80211_channel *channels;
466 struct ieee80211_channel *geo_ch;
467 struct ieee80211_rate *rates;
468 int i = 0;
469
470 if (priv->bands[IEEE80211_BAND_2GHZ].n_bitrates ||
471 priv->bands[IEEE80211_BAND_5GHZ].n_bitrates) {
472 IWL_DEBUG_INFO(priv, "Geography modes already initialized.\n");
473 set_bit(STATUS_GEO_CONFIGURED, &priv->status);
474 return 0;
475 }
476
477 channels = kzalloc(sizeof(struct ieee80211_channel) *
478 priv->channel_count, GFP_KERNEL);
479 if (!channels)
480 return -ENOMEM;
481
482 rates = kzalloc((sizeof(struct ieee80211_rate) * (IWL_RATE_COUNT + 1)),
483 GFP_KERNEL);
484 if (!rates) {
485 kfree(channels);
486 return -ENOMEM;
487 }
488
489 /* 5.2GHz channels start after the 2.4GHz channels */
490 sband = &priv->bands[IEEE80211_BAND_5GHZ];
491 sband->channels = &channels[ARRAY_SIZE(iwl_eeprom_band_1)];
492 /* just OFDM */
493 sband->bitrates = &rates[IWL_FIRST_OFDM_RATE];
494 sband->n_bitrates = IWL_RATE_COUNT - IWL_FIRST_OFDM_RATE;
495
496 if (priv->cfg->sku & IWL_SKU_N)
497 iwlcore_init_ht_hw_capab(priv, &sband->ht_cap,
498 IEEE80211_BAND_5GHZ);
499
500 sband = &priv->bands[IEEE80211_BAND_2GHZ];
501 sband->channels = channels;
502 /* OFDM & CCK */
503 sband->bitrates = rates;
504 sband->n_bitrates = IWL_RATE_COUNT;
505
506 if (priv->cfg->sku & IWL_SKU_N)
507 iwlcore_init_ht_hw_capab(priv, &sband->ht_cap,
508 IEEE80211_BAND_2GHZ);
509
510 priv->ieee_channels = channels;
511 priv->ieee_rates = rates;
512
513 for (i = 0; i < priv->channel_count; i++) {
514 ch = &priv->channel_info[i];
515
516 /* FIXME: might be removed if scan is OK */
517 if (!is_channel_valid(ch))
518 continue;
519
520 if (is_channel_a_band(ch))
521 sband = &priv->bands[IEEE80211_BAND_5GHZ];
522 else
523 sband = &priv->bands[IEEE80211_BAND_2GHZ];
524
525 geo_ch = &sband->channels[sband->n_channels++];
526
527 geo_ch->center_freq =
528 ieee80211_channel_to_frequency(ch->channel);
529 geo_ch->max_power = ch->max_power_avg;
530 geo_ch->max_antenna_gain = 0xff;
531 geo_ch->hw_value = ch->channel;
532
533 if (is_channel_valid(ch)) {
534 if (!(ch->flags & EEPROM_CHANNEL_IBSS))
535 geo_ch->flags |= IEEE80211_CHAN_NO_IBSS;
536
537 if (!(ch->flags & EEPROM_CHANNEL_ACTIVE))
538 geo_ch->flags |= IEEE80211_CHAN_PASSIVE_SCAN;
539
540 if (ch->flags & EEPROM_CHANNEL_RADAR)
541 geo_ch->flags |= IEEE80211_CHAN_RADAR;
542
543 geo_ch->flags |= ch->fat_extension_channel;
544
545 if (ch->max_power_avg > priv->tx_power_channel_lmt)
546 priv->tx_power_channel_lmt = ch->max_power_avg;
547 } else {
548 geo_ch->flags |= IEEE80211_CHAN_DISABLED;
549 }
550
551 /* Save flags for reg domain usage */
552 geo_ch->orig_flags = geo_ch->flags;
553
554 IWL_DEBUG_INFO(priv, "Channel %d Freq=%d[%sGHz] %s flag=0x%X\n",
555 ch->channel, geo_ch->center_freq,
556 is_channel_a_band(ch) ? "5.2" : "2.4",
557 geo_ch->flags & IEEE80211_CHAN_DISABLED ?
558 "restricted" : "valid",
559 geo_ch->flags);
560 }
561
562 if ((priv->bands[IEEE80211_BAND_5GHZ].n_channels == 0) &&
563 priv->cfg->sku & IWL_SKU_A) {
564 IWL_INFO(priv, "Incorrectly detected BG card as ABG. "
565 "Please send your PCI ID 0x%04X:0x%04X to maintainer.\n",
566 priv->pci_dev->device,
567 priv->pci_dev->subsystem_device);
568 priv->cfg->sku &= ~IWL_SKU_A;
569 }
570
571 IWL_INFO(priv, "Tunable channels: %d 802.11bg, %d 802.11a channels\n",
572 priv->bands[IEEE80211_BAND_2GHZ].n_channels,
573 priv->bands[IEEE80211_BAND_5GHZ].n_channels);
574
575 set_bit(STATUS_GEO_CONFIGURED, &priv->status);
576
577 return 0;
578 }
579 EXPORT_SYMBOL(iwlcore_init_geos);
580
581 /*
582 * iwlcore_free_geos - undo allocations in iwlcore_init_geos
583 */
584 void iwlcore_free_geos(struct iwl_priv *priv)
585 {
586 kfree(priv->ieee_channels);
587 kfree(priv->ieee_rates);
588 clear_bit(STATUS_GEO_CONFIGURED, &priv->status);
589 }
590 EXPORT_SYMBOL(iwlcore_free_geos);
591
592 static bool is_single_rx_stream(struct iwl_priv *priv)
593 {
594 return !priv->current_ht_config.is_ht ||
595 ((priv->current_ht_config.mcs.rx_mask[1] == 0) &&
596 (priv->current_ht_config.mcs.rx_mask[2] == 0));
597 }
598
599 static u8 iwl_is_channel_extension(struct iwl_priv *priv,
600 enum ieee80211_band band,
601 u16 channel, u8 extension_chan_offset)
602 {
603 const struct iwl_channel_info *ch_info;
604
605 ch_info = iwl_get_channel_info(priv, band, channel);
606 if (!is_channel_valid(ch_info))
607 return 0;
608
609 if (extension_chan_offset == IEEE80211_HT_PARAM_CHA_SEC_ABOVE)
610 return !(ch_info->fat_extension_channel &
611 IEEE80211_CHAN_NO_HT40PLUS);
612 else if (extension_chan_offset == IEEE80211_HT_PARAM_CHA_SEC_BELOW)
613 return !(ch_info->fat_extension_channel &
614 IEEE80211_CHAN_NO_HT40MINUS);
615
616 return 0;
617 }
618
619 u8 iwl_is_fat_tx_allowed(struct iwl_priv *priv,
620 struct ieee80211_sta_ht_cap *sta_ht_inf)
621 {
622 struct iwl_ht_info *iwl_ht_conf = &priv->current_ht_config;
623
624 if ((!iwl_ht_conf->is_ht) ||
625 (iwl_ht_conf->supported_chan_width != IWL_CHANNEL_WIDTH_40MHZ))
626 return 0;
627
628 /* We do not check for IEEE80211_HT_CAP_SUP_WIDTH_20_40
629 * the bit will not set if it is pure 40MHz case
630 */
631 if (sta_ht_inf) {
632 if (!sta_ht_inf->ht_supported)
633 return 0;
634 }
635 return iwl_is_channel_extension(priv, priv->band,
636 le16_to_cpu(priv->staging_rxon.channel),
637 iwl_ht_conf->extension_chan_offset);
638 }
639 EXPORT_SYMBOL(iwl_is_fat_tx_allowed);
640
641 static u16 iwl_adjust_beacon_interval(u16 beacon_val, u16 max_beacon_val)
642 {
643 u16 new_val = 0;
644 u16 beacon_factor = 0;
645
646 beacon_factor = (beacon_val + max_beacon_val) / max_beacon_val;
647 new_val = beacon_val / beacon_factor;
648
649 if (!new_val)
650 new_val = max_beacon_val;
651
652 return new_val;
653 }
654
655 void iwl_setup_rxon_timing(struct iwl_priv *priv)
656 {
657 u64 tsf;
658 s32 interval_tm, rem;
659 unsigned long flags;
660 struct ieee80211_conf *conf = NULL;
661 u16 beacon_int;
662
663 conf = ieee80211_get_hw_conf(priv->hw);
664
665 spin_lock_irqsave(&priv->lock, flags);
666 priv->rxon_timing.timestamp = cpu_to_le64(priv->timestamp);
667 priv->rxon_timing.listen_interval = cpu_to_le16(conf->listen_interval);
668
669 if (priv->iw_mode == NL80211_IFTYPE_STATION) {
670 beacon_int = priv->beacon_int;
671 priv->rxon_timing.atim_window = 0;
672 } else {
673 beacon_int = priv->vif->bss_conf.beacon_int;
674
675 /* TODO: we need to get atim_window from upper stack
676 * for now we set to 0 */
677 priv->rxon_timing.atim_window = 0;
678 }
679
680 beacon_int = iwl_adjust_beacon_interval(beacon_int,
681 priv->hw_params.max_beacon_itrvl * 1024);
682 priv->rxon_timing.beacon_interval = cpu_to_le16(beacon_int);
683
684 tsf = priv->timestamp; /* tsf is modifed by do_div: copy it */
685 interval_tm = beacon_int * 1024;
686 rem = do_div(tsf, interval_tm);
687 priv->rxon_timing.beacon_init_val = cpu_to_le32(interval_tm - rem);
688
689 spin_unlock_irqrestore(&priv->lock, flags);
690 IWL_DEBUG_ASSOC(priv,
691 "beacon interval %d beacon timer %d beacon tim %d\n",
692 le16_to_cpu(priv->rxon_timing.beacon_interval),
693 le32_to_cpu(priv->rxon_timing.beacon_init_val),
694 le16_to_cpu(priv->rxon_timing.atim_window));
695 }
696 EXPORT_SYMBOL(iwl_setup_rxon_timing);
697
698 void iwl_set_rxon_hwcrypto(struct iwl_priv *priv, int hw_decrypt)
699 {
700 struct iwl_rxon_cmd *rxon = &priv->staging_rxon;
701
702 if (hw_decrypt)
703 rxon->filter_flags &= ~RXON_FILTER_DIS_DECRYPT_MSK;
704 else
705 rxon->filter_flags |= RXON_FILTER_DIS_DECRYPT_MSK;
706
707 }
708 EXPORT_SYMBOL(iwl_set_rxon_hwcrypto);
709
710 /**
711 * iwl_check_rxon_cmd - validate RXON structure is valid
712 *
713 * NOTE: This is really only useful during development and can eventually
714 * be #ifdef'd out once the driver is stable and folks aren't actively
715 * making changes
716 */
717 int iwl_check_rxon_cmd(struct iwl_priv *priv)
718 {
719 int error = 0;
720 int counter = 1;
721 struct iwl_rxon_cmd *rxon = &priv->staging_rxon;
722
723 if (rxon->flags & RXON_FLG_BAND_24G_MSK) {
724 error |= le32_to_cpu(rxon->flags &
725 (RXON_FLG_TGJ_NARROW_BAND_MSK |
726 RXON_FLG_RADAR_DETECT_MSK));
727 if (error)
728 IWL_WARN(priv, "check 24G fields %d | %d\n",
729 counter++, error);
730 } else {
731 error |= (rxon->flags & RXON_FLG_SHORT_SLOT_MSK) ?
732 0 : le32_to_cpu(RXON_FLG_SHORT_SLOT_MSK);
733 if (error)
734 IWL_WARN(priv, "check 52 fields %d | %d\n",
735 counter++, error);
736 error |= le32_to_cpu(rxon->flags & RXON_FLG_CCK_MSK);
737 if (error)
738 IWL_WARN(priv, "check 52 CCK %d | %d\n",
739 counter++, error);
740 }
741 error |= (rxon->node_addr[0] | rxon->bssid_addr[0]) & 0x1;
742 if (error)
743 IWL_WARN(priv, "check mac addr %d | %d\n", counter++, error);
744
745 /* make sure basic rates 6Mbps and 1Mbps are supported */
746 error |= (((rxon->ofdm_basic_rates & IWL_RATE_6M_MASK) == 0) &&
747 ((rxon->cck_basic_rates & IWL_RATE_1M_MASK) == 0));
748 if (error)
749 IWL_WARN(priv, "check basic rate %d | %d\n", counter++, error);
750
751 error |= (le16_to_cpu(rxon->assoc_id) > 2007);
752 if (error)
753 IWL_WARN(priv, "check assoc id %d | %d\n", counter++, error);
754
755 error |= ((rxon->flags & (RXON_FLG_CCK_MSK | RXON_FLG_SHORT_SLOT_MSK))
756 == (RXON_FLG_CCK_MSK | RXON_FLG_SHORT_SLOT_MSK));
757 if (error)
758 IWL_WARN(priv, "check CCK and short slot %d | %d\n",
759 counter++, error);
760
761 error |= ((rxon->flags & (RXON_FLG_CCK_MSK | RXON_FLG_AUTO_DETECT_MSK))
762 == (RXON_FLG_CCK_MSK | RXON_FLG_AUTO_DETECT_MSK));
763 if (error)
764 IWL_WARN(priv, "check CCK & auto detect %d | %d\n",
765 counter++, error);
766
767 error |= ((rxon->flags & (RXON_FLG_AUTO_DETECT_MSK |
768 RXON_FLG_TGG_PROTECT_MSK)) == RXON_FLG_TGG_PROTECT_MSK);
769 if (error)
770 IWL_WARN(priv, "check TGG and auto detect %d | %d\n",
771 counter++, error);
772
773 if (error)
774 IWL_WARN(priv, "Tuning to channel %d\n",
775 le16_to_cpu(rxon->channel));
776
777 if (error) {
778 IWL_ERR(priv, "Not a valid iwl_rxon_assoc_cmd field values\n");
779 return -1;
780 }
781 return 0;
782 }
783 EXPORT_SYMBOL(iwl_check_rxon_cmd);
784
785 /**
786 * iwl_full_rxon_required - check if full RXON (vs RXON_ASSOC) cmd is needed
787 * @priv: staging_rxon is compared to active_rxon
788 *
789 * If the RXON structure is changing enough to require a new tune,
790 * or is clearing the RXON_FILTER_ASSOC_MSK, then return 1 to indicate that
791 * a new tune (full RXON command, rather than RXON_ASSOC cmd) is required.
792 */
793 int iwl_full_rxon_required(struct iwl_priv *priv)
794 {
795
796 /* These items are only settable from the full RXON command */
797 if (!(iwl_is_associated(priv)) ||
798 compare_ether_addr(priv->staging_rxon.bssid_addr,
799 priv->active_rxon.bssid_addr) ||
800 compare_ether_addr(priv->staging_rxon.node_addr,
801 priv->active_rxon.node_addr) ||
802 compare_ether_addr(priv->staging_rxon.wlap_bssid_addr,
803 priv->active_rxon.wlap_bssid_addr) ||
804 (priv->staging_rxon.dev_type != priv->active_rxon.dev_type) ||
805 (priv->staging_rxon.channel != priv->active_rxon.channel) ||
806 (priv->staging_rxon.air_propagation !=
807 priv->active_rxon.air_propagation) ||
808 (priv->staging_rxon.ofdm_ht_single_stream_basic_rates !=
809 priv->active_rxon.ofdm_ht_single_stream_basic_rates) ||
810 (priv->staging_rxon.ofdm_ht_dual_stream_basic_rates !=
811 priv->active_rxon.ofdm_ht_dual_stream_basic_rates) ||
812 (priv->staging_rxon.ofdm_ht_triple_stream_basic_rates !=
813 priv->active_rxon.ofdm_ht_triple_stream_basic_rates) ||
814 (priv->staging_rxon.assoc_id != priv->active_rxon.assoc_id))
815 return 1;
816
817 /* flags, filter_flags, ofdm_basic_rates, and cck_basic_rates can
818 * be updated with the RXON_ASSOC command -- however only some
819 * flag transitions are allowed using RXON_ASSOC */
820
821 /* Check if we are not switching bands */
822 if ((priv->staging_rxon.flags & RXON_FLG_BAND_24G_MSK) !=
823 (priv->active_rxon.flags & RXON_FLG_BAND_24G_MSK))
824 return 1;
825
826 /* Check if we are switching association toggle */
827 if ((priv->staging_rxon.filter_flags & RXON_FILTER_ASSOC_MSK) !=
828 (priv->active_rxon.filter_flags & RXON_FILTER_ASSOC_MSK))
829 return 1;
830
831 return 0;
832 }
833 EXPORT_SYMBOL(iwl_full_rxon_required);
834
835 u8 iwl_rate_get_lowest_plcp(struct iwl_priv *priv)
836 {
837 int i;
838 int rate_mask;
839
840 /* Set rate mask*/
841 if (priv->staging_rxon.flags & RXON_FLG_BAND_24G_MSK)
842 rate_mask = priv->active_rate_basic & IWL_CCK_RATES_MASK;
843 else
844 rate_mask = priv->active_rate_basic & IWL_OFDM_RATES_MASK;
845
846 /* Find lowest valid rate */
847 for (i = IWL_RATE_1M_INDEX; i != IWL_RATE_INVALID;
848 i = iwl_rates[i].next_ieee) {
849 if (rate_mask & (1 << i))
850 return iwl_rates[i].plcp;
851 }
852
853 /* No valid rate was found. Assign the lowest one */
854 if (priv->staging_rxon.flags & RXON_FLG_BAND_24G_MSK)
855 return IWL_RATE_1M_PLCP;
856 else
857 return IWL_RATE_6M_PLCP;
858 }
859 EXPORT_SYMBOL(iwl_rate_get_lowest_plcp);
860
861 void iwl_set_rxon_ht(struct iwl_priv *priv, struct iwl_ht_info *ht_info)
862 {
863 struct iwl_rxon_cmd *rxon = &priv->staging_rxon;
864
865 if (!ht_info->is_ht) {
866 rxon->flags &= ~(RXON_FLG_CHANNEL_MODE_MSK |
867 RXON_FLG_CTRL_CHANNEL_LOC_HI_MSK |
868 RXON_FLG_FAT_PROT_MSK |
869 RXON_FLG_HT_PROT_MSK);
870 return;
871 }
872
873 /* FIXME: if the definition of ht_protection changed, the "translation"
874 * will be needed for rxon->flags
875 */
876 rxon->flags |= cpu_to_le32(ht_info->ht_protection << RXON_FLG_HT_OPERATING_MODE_POS);
877
878 /* Set up channel bandwidth:
879 * 20 MHz only, 20/40 mixed or pure 40 if fat ok */
880 /* clear the HT channel mode before set the mode */
881 rxon->flags &= ~(RXON_FLG_CHANNEL_MODE_MSK |
882 RXON_FLG_CTRL_CHANNEL_LOC_HI_MSK);
883 if (iwl_is_fat_tx_allowed(priv, NULL)) {
884 /* pure 40 fat */
885 if (ht_info->ht_protection == IEEE80211_HT_OP_MODE_PROTECTION_20MHZ) {
886 rxon->flags |= RXON_FLG_CHANNEL_MODE_PURE_40;
887 /* Note: control channel is opposite of extension channel */
888 switch (ht_info->extension_chan_offset) {
889 case IEEE80211_HT_PARAM_CHA_SEC_ABOVE:
890 rxon->flags &= ~RXON_FLG_CTRL_CHANNEL_LOC_HI_MSK;
891 break;
892 case IEEE80211_HT_PARAM_CHA_SEC_BELOW:
893 rxon->flags |= RXON_FLG_CTRL_CHANNEL_LOC_HI_MSK;
894 break;
895 }
896 } else {
897 /* Note: control channel is opposite of extension channel */
898 switch (ht_info->extension_chan_offset) {
899 case IEEE80211_HT_PARAM_CHA_SEC_ABOVE:
900 rxon->flags &= ~(RXON_FLG_CTRL_CHANNEL_LOC_HI_MSK);
901 rxon->flags |= RXON_FLG_CHANNEL_MODE_MIXED;
902 break;
903 case IEEE80211_HT_PARAM_CHA_SEC_BELOW:
904 rxon->flags |= RXON_FLG_CTRL_CHANNEL_LOC_HI_MSK;
905 rxon->flags |= RXON_FLG_CHANNEL_MODE_MIXED;
906 break;
907 case IEEE80211_HT_PARAM_CHA_SEC_NONE:
908 default:
909 /* channel location only valid if in Mixed mode */
910 IWL_ERR(priv, "invalid extension channel offset\n");
911 break;
912 }
913 }
914 } else {
915 rxon->flags |= RXON_FLG_CHANNEL_MODE_LEGACY;
916 }
917
918 if (priv->cfg->ops->hcmd->set_rxon_chain)
919 priv->cfg->ops->hcmd->set_rxon_chain(priv);
920
921 IWL_DEBUG_ASSOC(priv, "supported HT rate 0x%X 0x%X 0x%X "
922 "rxon flags 0x%X operation mode :0x%X "
923 "extension channel offset 0x%x\n",
924 ht_info->mcs.rx_mask[0],
925 ht_info->mcs.rx_mask[1],
926 ht_info->mcs.rx_mask[2],
927 le32_to_cpu(rxon->flags), ht_info->ht_protection,
928 ht_info->extension_chan_offset);
929 return;
930 }
931 EXPORT_SYMBOL(iwl_set_rxon_ht);
932
933 #define IWL_NUM_RX_CHAINS_MULTIPLE 3
934 #define IWL_NUM_RX_CHAINS_SINGLE 2
935 #define IWL_NUM_IDLE_CHAINS_DUAL 2
936 #define IWL_NUM_IDLE_CHAINS_SINGLE 1
937
938 /* Determine how many receiver/antenna chains to use.
939 * More provides better reception via diversity. Fewer saves power.
940 * MIMO (dual stream) requires at least 2, but works better with 3.
941 * This does not determine *which* chains to use, just how many.
942 */
943 static int iwl_get_active_rx_chain_count(struct iwl_priv *priv)
944 {
945 bool is_single = is_single_rx_stream(priv);
946 bool is_cam = !test_bit(STATUS_POWER_PMI, &priv->status);
947
948 /* # of Rx chains to use when expecting MIMO. */
949 if (is_single || (!is_cam && (priv->current_ht_config.sm_ps ==
950 WLAN_HT_CAP_SM_PS_STATIC)))
951 return IWL_NUM_RX_CHAINS_SINGLE;
952 else
953 return IWL_NUM_RX_CHAINS_MULTIPLE;
954 }
955
956 static int iwl_get_idle_rx_chain_count(struct iwl_priv *priv, int active_cnt)
957 {
958 int idle_cnt;
959 bool is_cam = !test_bit(STATUS_POWER_PMI, &priv->status);
960 /* # Rx chains when idling and maybe trying to save power */
961 switch (priv->current_ht_config.sm_ps) {
962 case WLAN_HT_CAP_SM_PS_STATIC:
963 case WLAN_HT_CAP_SM_PS_DYNAMIC:
964 idle_cnt = (is_cam) ? IWL_NUM_IDLE_CHAINS_DUAL :
965 IWL_NUM_IDLE_CHAINS_SINGLE;
966 break;
967 case WLAN_HT_CAP_SM_PS_DISABLED:
968 idle_cnt = (is_cam) ? active_cnt : IWL_NUM_IDLE_CHAINS_SINGLE;
969 break;
970 case WLAN_HT_CAP_SM_PS_INVALID:
971 default:
972 IWL_ERR(priv, "invalid mimo ps mode %d\n",
973 priv->current_ht_config.sm_ps);
974 WARN_ON(1);
975 idle_cnt = -1;
976 break;
977 }
978 return idle_cnt;
979 }
980
981 /* up to 4 chains */
982 static u8 iwl_count_chain_bitmap(u32 chain_bitmap)
983 {
984 u8 res;
985 res = (chain_bitmap & BIT(0)) >> 0;
986 res += (chain_bitmap & BIT(1)) >> 1;
987 res += (chain_bitmap & BIT(2)) >> 2;
988 res += (chain_bitmap & BIT(4)) >> 4;
989 return res;
990 }
991
992 /**
993 * iwl_is_monitor_mode - Determine if interface in monitor mode
994 *
995 * priv->iw_mode is set in add_interface, but add_interface is
996 * never called for monitor mode. The only way mac80211 informs us about
997 * monitor mode is through configuring filters (call to configure_filter).
998 */
999 bool iwl_is_monitor_mode(struct iwl_priv *priv)
1000 {
1001 return !!(priv->staging_rxon.filter_flags & RXON_FILTER_PROMISC_MSK);
1002 }
1003 EXPORT_SYMBOL(iwl_is_monitor_mode);
1004
1005 /**
1006 * iwl_set_rxon_chain - Set up Rx chain usage in "staging" RXON image
1007 *
1008 * Selects how many and which Rx receivers/antennas/chains to use.
1009 * This should not be used for scan command ... it puts data in wrong place.
1010 */
1011 void iwl_set_rxon_chain(struct iwl_priv *priv)
1012 {
1013 bool is_single = is_single_rx_stream(priv);
1014 bool is_cam = !test_bit(STATUS_POWER_PMI, &priv->status);
1015 u8 idle_rx_cnt, active_rx_cnt, valid_rx_cnt;
1016 u32 active_chains;
1017 u16 rx_chain;
1018
1019 /* Tell uCode which antennas are actually connected.
1020 * Before first association, we assume all antennas are connected.
1021 * Just after first association, iwl_chain_noise_calibration()
1022 * checks which antennas actually *are* connected. */
1023 if (priv->chain_noise_data.active_chains)
1024 active_chains = priv->chain_noise_data.active_chains;
1025 else
1026 active_chains = priv->hw_params.valid_rx_ant;
1027
1028 rx_chain = active_chains << RXON_RX_CHAIN_VALID_POS;
1029
1030 /* How many receivers should we use? */
1031 active_rx_cnt = iwl_get_active_rx_chain_count(priv);
1032 idle_rx_cnt = iwl_get_idle_rx_chain_count(priv, active_rx_cnt);
1033
1034
1035 /* correct rx chain count according hw settings
1036 * and chain noise calibration
1037 */
1038 valid_rx_cnt = iwl_count_chain_bitmap(active_chains);
1039 if (valid_rx_cnt < active_rx_cnt)
1040 active_rx_cnt = valid_rx_cnt;
1041
1042 if (valid_rx_cnt < idle_rx_cnt)
1043 idle_rx_cnt = valid_rx_cnt;
1044
1045 rx_chain |= active_rx_cnt << RXON_RX_CHAIN_MIMO_CNT_POS;
1046 rx_chain |= idle_rx_cnt << RXON_RX_CHAIN_CNT_POS;
1047
1048 /* copied from 'iwl_bg_request_scan()' */
1049 /* Force use of chains B and C (0x6) for Rx for 4965
1050 * Avoid A (0x1) because of its off-channel reception on A-band.
1051 * MIMO is not used here, but value is required */
1052 if (iwl_is_monitor_mode(priv) &&
1053 !(priv->staging_rxon.flags & RXON_FLG_BAND_24G_MSK) &&
1054 ((priv->hw_rev & CSR_HW_REV_TYPE_MSK) == CSR_HW_REV_TYPE_4965)) {
1055 rx_chain = ANT_ABC << RXON_RX_CHAIN_VALID_POS;
1056 rx_chain |= ANT_BC << RXON_RX_CHAIN_FORCE_SEL_POS;
1057 rx_chain |= ANT_ABC << RXON_RX_CHAIN_FORCE_MIMO_SEL_POS;
1058 rx_chain |= 0x1 << RXON_RX_CHAIN_DRIVER_FORCE_POS;
1059 }
1060
1061 priv->staging_rxon.rx_chain = cpu_to_le16(rx_chain);
1062
1063 if (!is_single && (active_rx_cnt >= IWL_NUM_RX_CHAINS_SINGLE) && is_cam)
1064 priv->staging_rxon.rx_chain |= RXON_RX_CHAIN_MIMO_FORCE_MSK;
1065 else
1066 priv->staging_rxon.rx_chain &= ~RXON_RX_CHAIN_MIMO_FORCE_MSK;
1067
1068 IWL_DEBUG_ASSOC(priv, "rx_chain=0x%X active=%d idle=%d\n",
1069 priv->staging_rxon.rx_chain,
1070 active_rx_cnt, idle_rx_cnt);
1071
1072 WARN_ON(active_rx_cnt == 0 || idle_rx_cnt == 0 ||
1073 active_rx_cnt < idle_rx_cnt);
1074 }
1075 EXPORT_SYMBOL(iwl_set_rxon_chain);
1076
1077 /**
1078 * iwl_set_rxon_channel - Set the phymode and channel values in staging RXON
1079 * @phymode: MODE_IEEE80211A sets to 5.2GHz; all else set to 2.4GHz
1080 * @channel: Any channel valid for the requested phymode
1081
1082 * In addition to setting the staging RXON, priv->phymode is also set.
1083 *
1084 * NOTE: Does not commit to the hardware; it sets appropriate bit fields
1085 * in the staging RXON flag structure based on the phymode
1086 */
1087 int iwl_set_rxon_channel(struct iwl_priv *priv, struct ieee80211_channel *ch)
1088 {
1089 enum ieee80211_band band = ch->band;
1090 u16 channel = ieee80211_frequency_to_channel(ch->center_freq);
1091
1092 if (!iwl_get_channel_info(priv, band, channel)) {
1093 IWL_DEBUG_INFO(priv, "Could not set channel to %d [%d]\n",
1094 channel, band);
1095 return -EINVAL;
1096 }
1097
1098 if ((le16_to_cpu(priv->staging_rxon.channel) == channel) &&
1099 (priv->band == band))
1100 return 0;
1101
1102 priv->staging_rxon.channel = cpu_to_le16(channel);
1103 if (band == IEEE80211_BAND_5GHZ)
1104 priv->staging_rxon.flags &= ~RXON_FLG_BAND_24G_MSK;
1105 else
1106 priv->staging_rxon.flags |= RXON_FLG_BAND_24G_MSK;
1107
1108 priv->band = band;
1109
1110 IWL_DEBUG_INFO(priv, "Staging channel set to %d [%d]\n", channel, band);
1111
1112 return 0;
1113 }
1114 EXPORT_SYMBOL(iwl_set_rxon_channel);
1115
1116 void iwl_set_flags_for_band(struct iwl_priv *priv,
1117 enum ieee80211_band band)
1118 {
1119 if (band == IEEE80211_BAND_5GHZ) {
1120 priv->staging_rxon.flags &=
1121 ~(RXON_FLG_BAND_24G_MSK | RXON_FLG_AUTO_DETECT_MSK
1122 | RXON_FLG_CCK_MSK);
1123 priv->staging_rxon.flags |= RXON_FLG_SHORT_SLOT_MSK;
1124 } else {
1125 /* Copied from iwl_post_associate() */
1126 if (priv->assoc_capability & WLAN_CAPABILITY_SHORT_SLOT_TIME)
1127 priv->staging_rxon.flags |= RXON_FLG_SHORT_SLOT_MSK;
1128 else
1129 priv->staging_rxon.flags &= ~RXON_FLG_SHORT_SLOT_MSK;
1130
1131 if (priv->iw_mode == NL80211_IFTYPE_ADHOC)
1132 priv->staging_rxon.flags &= ~RXON_FLG_SHORT_SLOT_MSK;
1133
1134 priv->staging_rxon.flags |= RXON_FLG_BAND_24G_MSK;
1135 priv->staging_rxon.flags |= RXON_FLG_AUTO_DETECT_MSK;
1136 priv->staging_rxon.flags &= ~RXON_FLG_CCK_MSK;
1137 }
1138 }
1139 EXPORT_SYMBOL(iwl_set_flags_for_band);
1140
1141 /*
1142 * initialize rxon structure with default values from eeprom
1143 */
1144 void iwl_connection_init_rx_config(struct iwl_priv *priv, int mode)
1145 {
1146 const struct iwl_channel_info *ch_info;
1147
1148 memset(&priv->staging_rxon, 0, sizeof(priv->staging_rxon));
1149
1150 switch (mode) {
1151 case NL80211_IFTYPE_AP:
1152 priv->staging_rxon.dev_type = RXON_DEV_TYPE_AP;
1153 break;
1154
1155 case NL80211_IFTYPE_STATION:
1156 priv->staging_rxon.dev_type = RXON_DEV_TYPE_ESS;
1157 priv->staging_rxon.filter_flags = RXON_FILTER_ACCEPT_GRP_MSK;
1158 break;
1159
1160 case NL80211_IFTYPE_ADHOC:
1161 priv->staging_rxon.dev_type = RXON_DEV_TYPE_IBSS;
1162 priv->staging_rxon.flags = RXON_FLG_SHORT_PREAMBLE_MSK;
1163 priv->staging_rxon.filter_flags = RXON_FILTER_BCON_AWARE_MSK |
1164 RXON_FILTER_ACCEPT_GRP_MSK;
1165 break;
1166
1167 default:
1168 IWL_ERR(priv, "Unsupported interface type %d\n", mode);
1169 break;
1170 }
1171
1172 #if 0
1173 /* TODO: Figure out when short_preamble would be set and cache from
1174 * that */
1175 if (!hw_to_local(priv->hw)->short_preamble)
1176 priv->staging_rxon.flags &= ~RXON_FLG_SHORT_PREAMBLE_MSK;
1177 else
1178 priv->staging_rxon.flags |= RXON_FLG_SHORT_PREAMBLE_MSK;
1179 #endif
1180
1181 ch_info = iwl_get_channel_info(priv, priv->band,
1182 le16_to_cpu(priv->active_rxon.channel));
1183
1184 if (!ch_info)
1185 ch_info = &priv->channel_info[0];
1186
1187 /*
1188 * in some case A channels are all non IBSS
1189 * in this case force B/G channel
1190 */
1191 if ((priv->iw_mode == NL80211_IFTYPE_ADHOC) &&
1192 !(is_channel_ibss(ch_info)))
1193 ch_info = &priv->channel_info[0];
1194
1195 priv->staging_rxon.channel = cpu_to_le16(ch_info->channel);
1196 priv->band = ch_info->band;
1197
1198 iwl_set_flags_for_band(priv, priv->band);
1199
1200 priv->staging_rxon.ofdm_basic_rates =
1201 (IWL_OFDM_RATES_MASK >> IWL_FIRST_OFDM_RATE) & 0xFF;
1202 priv->staging_rxon.cck_basic_rates =
1203 (IWL_CCK_RATES_MASK >> IWL_FIRST_CCK_RATE) & 0xF;
1204
1205 /* clear both MIX and PURE40 mode flag */
1206 priv->staging_rxon.flags &= ~(RXON_FLG_CHANNEL_MODE_MIXED |
1207 RXON_FLG_CHANNEL_MODE_PURE_40);
1208 memcpy(priv->staging_rxon.node_addr, priv->mac_addr, ETH_ALEN);
1209 memcpy(priv->staging_rxon.wlap_bssid_addr, priv->mac_addr, ETH_ALEN);
1210 priv->staging_rxon.ofdm_ht_single_stream_basic_rates = 0xff;
1211 priv->staging_rxon.ofdm_ht_dual_stream_basic_rates = 0xff;
1212 priv->staging_rxon.ofdm_ht_triple_stream_basic_rates = 0xff;
1213 }
1214 EXPORT_SYMBOL(iwl_connection_init_rx_config);
1215
1216 static void iwl_set_rate(struct iwl_priv *priv)
1217 {
1218 const struct ieee80211_supported_band *hw = NULL;
1219 struct ieee80211_rate *rate;
1220 int i;
1221
1222 hw = iwl_get_hw_mode(priv, priv->band);
1223 if (!hw) {
1224 IWL_ERR(priv, "Failed to set rate: unable to get hw mode\n");
1225 return;
1226 }
1227
1228 priv->active_rate = 0;
1229 priv->active_rate_basic = 0;
1230
1231 for (i = 0; i < hw->n_bitrates; i++) {
1232 rate = &(hw->bitrates[i]);
1233 if (rate->hw_value < IWL_RATE_COUNT)
1234 priv->active_rate |= (1 << rate->hw_value);
1235 }
1236
1237 IWL_DEBUG_RATE(priv, "Set active_rate = %0x, active_rate_basic = %0x\n",
1238 priv->active_rate, priv->active_rate_basic);
1239
1240 /*
1241 * If a basic rate is configured, then use it (adding IWL_RATE_1M_MASK)
1242 * otherwise set it to the default of all CCK rates and 6, 12, 24 for
1243 * OFDM
1244 */
1245 if (priv->active_rate_basic & IWL_CCK_BASIC_RATES_MASK)
1246 priv->staging_rxon.cck_basic_rates =
1247 ((priv->active_rate_basic &
1248 IWL_CCK_RATES_MASK) >> IWL_FIRST_CCK_RATE) & 0xF;
1249 else
1250 priv->staging_rxon.cck_basic_rates =
1251 (IWL_CCK_BASIC_RATES_MASK >> IWL_FIRST_CCK_RATE) & 0xF;
1252
1253 if (priv->active_rate_basic & IWL_OFDM_BASIC_RATES_MASK)
1254 priv->staging_rxon.ofdm_basic_rates =
1255 ((priv->active_rate_basic &
1256 (IWL_OFDM_BASIC_RATES_MASK | IWL_RATE_6M_MASK)) >>
1257 IWL_FIRST_OFDM_RATE) & 0xFF;
1258 else
1259 priv->staging_rxon.ofdm_basic_rates =
1260 (IWL_OFDM_BASIC_RATES_MASK >> IWL_FIRST_OFDM_RATE) & 0xFF;
1261 }
1262
1263 void iwl_rx_csa(struct iwl_priv *priv, struct iwl_rx_mem_buffer *rxb)
1264 {
1265 struct iwl_rx_packet *pkt = (struct iwl_rx_packet *)rxb->skb->data;
1266 struct iwl_rxon_cmd *rxon = (void *)&priv->active_rxon;
1267 struct iwl_csa_notification *csa = &(pkt->u.csa_notif);
1268 IWL_DEBUG_11H(priv, "CSA notif: channel %d, status %d\n",
1269 le16_to_cpu(csa->channel), le32_to_cpu(csa->status));
1270 rxon->channel = csa->channel;
1271 priv->staging_rxon.channel = csa->channel;
1272 }
1273 EXPORT_SYMBOL(iwl_rx_csa);
1274
1275 #ifdef CONFIG_IWLWIFI_DEBUG
1276 static void iwl_print_rx_config_cmd(struct iwl_priv *priv)
1277 {
1278 struct iwl_rxon_cmd *rxon = &priv->staging_rxon;
1279
1280 IWL_DEBUG_RADIO(priv, "RX CONFIG:\n");
1281 iwl_print_hex_dump(IWL_DL_RADIO, (u8 *) rxon, sizeof(*rxon));
1282 IWL_DEBUG_RADIO(priv, "u16 channel: 0x%x\n", le16_to_cpu(rxon->channel));
1283 IWL_DEBUG_RADIO(priv, "u32 flags: 0x%08X\n", le32_to_cpu(rxon->flags));
1284 IWL_DEBUG_RADIO(priv, "u32 filter_flags: 0x%08x\n",
1285 le32_to_cpu(rxon->filter_flags));
1286 IWL_DEBUG_RADIO(priv, "u8 dev_type: 0x%x\n", rxon->dev_type);
1287 IWL_DEBUG_RADIO(priv, "u8 ofdm_basic_rates: 0x%02x\n",
1288 rxon->ofdm_basic_rates);
1289 IWL_DEBUG_RADIO(priv, "u8 cck_basic_rates: 0x%02x\n", rxon->cck_basic_rates);
1290 IWL_DEBUG_RADIO(priv, "u8[6] node_addr: %pM\n", rxon->node_addr);
1291 IWL_DEBUG_RADIO(priv, "u8[6] bssid_addr: %pM\n", rxon->bssid_addr);
1292 IWL_DEBUG_RADIO(priv, "u16 assoc_id: 0x%x\n", le16_to_cpu(rxon->assoc_id));
1293 }
1294 #endif
1295
1296 static const char *desc_lookup_text[] = {
1297 "OK",
1298 "FAIL",
1299 "BAD_PARAM",
1300 "BAD_CHECKSUM",
1301 "NMI_INTERRUPT_WDG",
1302 "SYSASSERT",
1303 "FATAL_ERROR",
1304 "BAD_COMMAND",
1305 "HW_ERROR_TUNE_LOCK",
1306 "HW_ERROR_TEMPERATURE",
1307 "ILLEGAL_CHAN_FREQ",
1308 "VCC_NOT_STABLE",
1309 "FH_ERROR",
1310 "NMI_INTERRUPT_HOST",
1311 "NMI_INTERRUPT_ACTION_PT",
1312 "NMI_INTERRUPT_UNKNOWN",
1313 "UCODE_VERSION_MISMATCH",
1314 "HW_ERROR_ABS_LOCK",
1315 "HW_ERROR_CAL_LOCK_FAIL",
1316 "NMI_INTERRUPT_INST_ACTION_PT",
1317 "NMI_INTERRUPT_DATA_ACTION_PT",
1318 "NMI_TRM_HW_ER",
1319 "NMI_INTERRUPT_TRM",
1320 "NMI_INTERRUPT_BREAK_POINT"
1321 "DEBUG_0",
1322 "DEBUG_1",
1323 "DEBUG_2",
1324 "DEBUG_3",
1325 "UNKNOWN"
1326 };
1327
1328 static const char *desc_lookup(int i)
1329 {
1330 int max = ARRAY_SIZE(desc_lookup_text) - 1;
1331
1332 if (i < 0 || i > max)
1333 i = max;
1334
1335 return desc_lookup_text[i];
1336 }
1337
1338 #define ERROR_START_OFFSET (1 * sizeof(u32))
1339 #define ERROR_ELEM_SIZE (7 * sizeof(u32))
1340
1341 static void iwl_dump_nic_error_log(struct iwl_priv *priv)
1342 {
1343 u32 data2, line;
1344 u32 desc, time, count, base, data1;
1345 u32 blink1, blink2, ilink1, ilink2;
1346
1347 switch (priv->ucode_type) {
1348 case UCODE_RT:
1349 base = le32_to_cpu(priv->card_alive.error_event_table_ptr);
1350 break;
1351 case UCODE_INIT:
1352 base = le32_to_cpu(priv->card_alive_init.error_event_table_ptr);
1353 break;
1354 default:
1355 IWL_ERR(priv, "uCode image not available\n");
1356 return;
1357 }
1358
1359 if (!priv->cfg->ops->lib->is_valid_rtc_data_addr(base)) {
1360 IWL_ERR(priv, "Not valid error log pointer 0x%08X\n", base);
1361 return;
1362 }
1363
1364 count = iwl_read_targ_mem(priv, base);
1365
1366 if (ERROR_START_OFFSET <= count * ERROR_ELEM_SIZE) {
1367 IWL_ERR(priv, "Start IWL Error Log Dump:\n");
1368 IWL_ERR(priv, "Status: 0x%08lX, count: %d\n",
1369 priv->status, count);
1370 }
1371
1372 desc = iwl_read_targ_mem(priv, base + 1 * sizeof(u32));
1373 blink1 = iwl_read_targ_mem(priv, base + 3 * sizeof(u32));
1374 blink2 = iwl_read_targ_mem(priv, base + 4 * sizeof(u32));
1375 ilink1 = iwl_read_targ_mem(priv, base + 5 * sizeof(u32));
1376 ilink2 = iwl_read_targ_mem(priv, base + 6 * sizeof(u32));
1377 data1 = iwl_read_targ_mem(priv, base + 7 * sizeof(u32));
1378 data2 = iwl_read_targ_mem(priv, base + 8 * sizeof(u32));
1379 line = iwl_read_targ_mem(priv, base + 9 * sizeof(u32));
1380 time = iwl_read_targ_mem(priv, base + 11 * sizeof(u32));
1381
1382 IWL_ERR(priv, "Desc Time "
1383 "data1 data2 line\n");
1384 IWL_ERR(priv, "%-28s (#%02d) %010u 0x%08X 0x%08X %u\n",
1385 desc_lookup(desc), desc, time, data1, data2, line);
1386 IWL_ERR(priv, "blink1 blink2 ilink1 ilink2\n");
1387 IWL_ERR(priv, "0x%05X 0x%05X 0x%05X 0x%05X\n", blink1, blink2,
1388 ilink1, ilink2);
1389
1390 }
1391
1392 #define EVENT_START_OFFSET (4 * sizeof(u32))
1393
1394 /**
1395 * iwl_print_event_log - Dump error event log to syslog
1396 *
1397 */
1398 static void iwl_print_event_log(struct iwl_priv *priv, u32 start_idx,
1399 u32 num_events, u32 mode)
1400 {
1401 u32 i;
1402 u32 base; /* SRAM byte address of event log header */
1403 u32 event_size; /* 2 u32s, or 3 u32s if timestamp recorded */
1404 u32 ptr; /* SRAM byte address of log data */
1405 u32 ev, time, data; /* event log data */
1406
1407 if (num_events == 0)
1408 return;
1409 switch (priv->ucode_type) {
1410 case UCODE_RT:
1411 base = le32_to_cpu(priv->card_alive.log_event_table_ptr);
1412 break;
1413 case UCODE_INIT:
1414 base = le32_to_cpu(priv->card_alive_init.log_event_table_ptr);
1415 break;
1416 default:
1417 IWL_ERR(priv, "uCode image not available\n");
1418 return;
1419 }
1420
1421 if (mode == 0)
1422 event_size = 2 * sizeof(u32);
1423 else
1424 event_size = 3 * sizeof(u32);
1425
1426 ptr = base + EVENT_START_OFFSET + (start_idx * event_size);
1427
1428 /* "time" is actually "data" for mode 0 (no timestamp).
1429 * place event id # at far right for easier visual parsing. */
1430 for (i = 0; i < num_events; i++) {
1431 ev = iwl_read_targ_mem(priv, ptr);
1432 ptr += sizeof(u32);
1433 time = iwl_read_targ_mem(priv, ptr);
1434 ptr += sizeof(u32);
1435 if (mode == 0) {
1436 /* data, ev */
1437 IWL_ERR(priv, "EVT_LOG:0x%08x:%04u\n", time, ev);
1438 } else {
1439 data = iwl_read_targ_mem(priv, ptr);
1440 ptr += sizeof(u32);
1441 IWL_ERR(priv, "EVT_LOGT:%010u:0x%08x:%04u\n",
1442 time, data, ev);
1443 }
1444 }
1445 }
1446
1447 void iwl_dump_nic_event_log(struct iwl_priv *priv)
1448 {
1449 u32 base; /* SRAM byte address of event log header */
1450 u32 capacity; /* event log capacity in # entries */
1451 u32 mode; /* 0 - no timestamp, 1 - timestamp recorded */
1452 u32 num_wraps; /* # times uCode wrapped to top of log */
1453 u32 next_entry; /* index of next entry to be written by uCode */
1454 u32 size; /* # entries that we'll print */
1455
1456 switch (priv->ucode_type) {
1457 case UCODE_RT:
1458 base = le32_to_cpu(priv->card_alive.log_event_table_ptr);
1459 break;
1460 case UCODE_INIT:
1461 base = le32_to_cpu(priv->card_alive_init.log_event_table_ptr);
1462 break;
1463 default:
1464 IWL_ERR(priv, "uCode image not available\n");
1465 return;
1466 }
1467
1468 if (!priv->cfg->ops->lib->is_valid_rtc_data_addr(base)) {
1469 IWL_ERR(priv, "Invalid event log pointer 0x%08X\n", base);
1470 return;
1471 }
1472
1473 /* event log header */
1474 capacity = iwl_read_targ_mem(priv, base);
1475 mode = iwl_read_targ_mem(priv, base + (1 * sizeof(u32)));
1476 num_wraps = iwl_read_targ_mem(priv, base + (2 * sizeof(u32)));
1477 next_entry = iwl_read_targ_mem(priv, base + (3 * sizeof(u32)));
1478
1479 size = num_wraps ? capacity : next_entry;
1480
1481 /* bail out if nothing in log */
1482 if (size == 0) {
1483 IWL_ERR(priv, "Start IWL Event Log Dump: nothing in log\n");
1484 return;
1485 }
1486
1487 IWL_ERR(priv, "Start IWL Event Log Dump: display count %d, wraps %d\n",
1488 size, num_wraps);
1489
1490 /* if uCode has wrapped back to top of log, start at the oldest entry,
1491 * i.e the next one that uCode would fill. */
1492 if (num_wraps)
1493 iwl_print_event_log(priv, next_entry,
1494 capacity - next_entry, mode);
1495 /* (then/else) start at top of log */
1496 iwl_print_event_log(priv, 0, next_entry, mode);
1497
1498 }
1499 /**
1500 * iwl_irq_handle_error - called for HW or SW error interrupt from card
1501 */
1502 void iwl_irq_handle_error(struct iwl_priv *priv)
1503 {
1504 /* Set the FW error flag -- cleared on iwl_down */
1505 set_bit(STATUS_FW_ERROR, &priv->status);
1506
1507 /* Cancel currently queued command. */
1508 clear_bit(STATUS_HCMD_ACTIVE, &priv->status);
1509
1510 #ifdef CONFIG_IWLWIFI_DEBUG
1511 if (iwl_debug_level & IWL_DL_FW_ERRORS) {
1512 iwl_dump_nic_error_log(priv);
1513 iwl_dump_nic_event_log(priv);
1514 iwl_print_rx_config_cmd(priv);
1515 }
1516 #endif
1517
1518 wake_up_interruptible(&priv->wait_command_queue);
1519
1520 /* Keep the restart process from trying to send host
1521 * commands by clearing the INIT status bit */
1522 clear_bit(STATUS_READY, &priv->status);
1523
1524 if (!test_bit(STATUS_EXIT_PENDING, &priv->status)) {
1525 IWL_DEBUG(priv, IWL_DL_FW_ERRORS,
1526 "Restarting adapter due to uCode error.\n");
1527
1528 if (priv->cfg->mod_params->restart_fw)
1529 queue_work(priv->workqueue, &priv->restart);
1530 }
1531 }
1532 EXPORT_SYMBOL(iwl_irq_handle_error);
1533
1534 void iwl_configure_filter(struct ieee80211_hw *hw,
1535 unsigned int changed_flags,
1536 unsigned int *total_flags,
1537 int mc_count, struct dev_addr_list *mc_list)
1538 {
1539 struct iwl_priv *priv = hw->priv;
1540 __le32 *filter_flags = &priv->staging_rxon.filter_flags;
1541
1542 IWL_DEBUG_MAC80211(priv, "Enter: changed: 0x%x, total: 0x%x\n",
1543 changed_flags, *total_flags);
1544
1545 if (changed_flags & (FIF_OTHER_BSS | FIF_PROMISC_IN_BSS)) {
1546 if (*total_flags & (FIF_OTHER_BSS | FIF_PROMISC_IN_BSS))
1547 *filter_flags |= RXON_FILTER_PROMISC_MSK;
1548 else
1549 *filter_flags &= ~RXON_FILTER_PROMISC_MSK;
1550 }
1551 if (changed_flags & FIF_ALLMULTI) {
1552 if (*total_flags & FIF_ALLMULTI)
1553 *filter_flags |= RXON_FILTER_ACCEPT_GRP_MSK;
1554 else
1555 *filter_flags &= ~RXON_FILTER_ACCEPT_GRP_MSK;
1556 }
1557 if (changed_flags & FIF_CONTROL) {
1558 if (*total_flags & FIF_CONTROL)
1559 *filter_flags |= RXON_FILTER_CTL2HOST_MSK;
1560 else
1561 *filter_flags &= ~RXON_FILTER_CTL2HOST_MSK;
1562 }
1563 if (changed_flags & FIF_BCN_PRBRESP_PROMISC) {
1564 if (*total_flags & FIF_BCN_PRBRESP_PROMISC)
1565 *filter_flags |= RXON_FILTER_BCON_AWARE_MSK;
1566 else
1567 *filter_flags &= ~RXON_FILTER_BCON_AWARE_MSK;
1568 }
1569
1570 /* We avoid iwl_commit_rxon here to commit the new filter flags
1571 * since mac80211 will call ieee80211_hw_config immediately.
1572 * (mc_list is not supported at this time). Otherwise, we need to
1573 * queue a background iwl_commit_rxon work.
1574 */
1575
1576 *total_flags &= FIF_OTHER_BSS | FIF_ALLMULTI | FIF_PROMISC_IN_BSS |
1577 FIF_BCN_PRBRESP_PROMISC | FIF_CONTROL;
1578 }
1579 EXPORT_SYMBOL(iwl_configure_filter);
1580
1581 int iwl_setup_mac(struct iwl_priv *priv)
1582 {
1583 int ret;
1584 struct ieee80211_hw *hw = priv->hw;
1585 hw->rate_control_algorithm = "iwl-agn-rs";
1586
1587 /* Tell mac80211 our characteristics */
1588 hw->flags = IEEE80211_HW_SIGNAL_DBM |
1589 IEEE80211_HW_NOISE_DBM |
1590 IEEE80211_HW_AMPDU_AGGREGATION |
1591 IEEE80211_HW_SPECTRUM_MGMT |
1592 IEEE80211_HW_SUPPORTS_PS;
1593 hw->wiphy->interface_modes =
1594 BIT(NL80211_IFTYPE_STATION) |
1595 BIT(NL80211_IFTYPE_ADHOC);
1596
1597 hw->wiphy->custom_regulatory = true;
1598
1599 hw->wiphy->max_scan_ssids = PROBE_OPTION_MAX;
1600 /* we create the 802.11 header and a zero-length SSID element */
1601 hw->wiphy->max_scan_ie_len = IWL_MAX_PROBE_REQUEST - 24 - 2;
1602
1603 /* Default value; 4 EDCA QOS priorities */
1604 hw->queues = 4;
1605
1606 hw->max_listen_interval = IWL_CONN_MAX_LISTEN_INTERVAL;
1607
1608 if (priv->bands[IEEE80211_BAND_2GHZ].n_channels)
1609 priv->hw->wiphy->bands[IEEE80211_BAND_2GHZ] =
1610 &priv->bands[IEEE80211_BAND_2GHZ];
1611 if (priv->bands[IEEE80211_BAND_5GHZ].n_channels)
1612 priv->hw->wiphy->bands[IEEE80211_BAND_5GHZ] =
1613 &priv->bands[IEEE80211_BAND_5GHZ];
1614
1615 ret = ieee80211_register_hw(priv->hw);
1616 if (ret) {
1617 IWL_ERR(priv, "Failed to register hw (error %d)\n", ret);
1618 return ret;
1619 }
1620 priv->mac80211_registered = 1;
1621
1622 return 0;
1623 }
1624 EXPORT_SYMBOL(iwl_setup_mac);
1625
1626 int iwl_set_hw_params(struct iwl_priv *priv)
1627 {
1628 priv->hw_params.max_rxq_size = RX_QUEUE_SIZE;
1629 priv->hw_params.max_rxq_log = RX_QUEUE_SIZE_LOG;
1630 if (priv->cfg->mod_params->amsdu_size_8K)
1631 priv->hw_params.rx_buf_size = IWL_RX_BUF_SIZE_8K;
1632 else
1633 priv->hw_params.rx_buf_size = IWL_RX_BUF_SIZE_4K;
1634 priv->hw_params.max_pkt_size = priv->hw_params.rx_buf_size - 256;
1635
1636 priv->hw_params.max_beacon_itrvl = IWL_MAX_UCODE_BEACON_INTERVAL;
1637
1638 if (priv->cfg->mod_params->disable_11n)
1639 priv->cfg->sku &= ~IWL_SKU_N;
1640
1641 /* Device-specific setup */
1642 return priv->cfg->ops->lib->set_hw_params(priv);
1643 }
1644 EXPORT_SYMBOL(iwl_set_hw_params);
1645
1646 int iwl_init_drv(struct iwl_priv *priv)
1647 {
1648 int ret;
1649
1650 priv->ibss_beacon = NULL;
1651
1652 spin_lock_init(&priv->lock);
1653 spin_lock_init(&priv->sta_lock);
1654 spin_lock_init(&priv->hcmd_lock);
1655
1656 INIT_LIST_HEAD(&priv->free_frames);
1657
1658 mutex_init(&priv->mutex);
1659
1660 /* Clear the driver's (not device's) station table */
1661 iwl_clear_stations_table(priv);
1662
1663 priv->data_retry_limit = -1;
1664 priv->ieee_channels = NULL;
1665 priv->ieee_rates = NULL;
1666 priv->band = IEEE80211_BAND_2GHZ;
1667
1668 priv->iw_mode = NL80211_IFTYPE_STATION;
1669
1670 priv->current_ht_config.sm_ps = WLAN_HT_CAP_SM_PS_DISABLED;
1671
1672 /* Choose which receivers/antennas to use */
1673 if (priv->cfg->ops->hcmd->set_rxon_chain)
1674 priv->cfg->ops->hcmd->set_rxon_chain(priv);
1675
1676 iwl_init_scan_params(priv);
1677
1678 iwl_reset_qos(priv);
1679
1680 priv->qos_data.qos_active = 0;
1681 priv->qos_data.qos_cap.val = 0;
1682
1683 priv->rates_mask = IWL_RATES_MASK;
1684 /* If power management is turned on, default to CAM mode */
1685 priv->power_mode = IWL_POWER_MODE_CAM;
1686 priv->tx_power_user_lmt = IWL_TX_POWER_TARGET_POWER_MAX;
1687
1688 ret = iwl_init_channel_map(priv);
1689 if (ret) {
1690 IWL_ERR(priv, "initializing regulatory failed: %d\n", ret);
1691 goto err;
1692 }
1693
1694 ret = iwlcore_init_geos(priv);
1695 if (ret) {
1696 IWL_ERR(priv, "initializing geos failed: %d\n", ret);
1697 goto err_free_channel_map;
1698 }
1699 iwlcore_init_hw_rates(priv, priv->ieee_rates);
1700
1701 return 0;
1702
1703 err_free_channel_map:
1704 iwl_free_channel_map(priv);
1705 err:
1706 return ret;
1707 }
1708 EXPORT_SYMBOL(iwl_init_drv);
1709
1710 int iwl_set_tx_power(struct iwl_priv *priv, s8 tx_power, bool force)
1711 {
1712 int ret = 0;
1713 if (tx_power < IWL_TX_POWER_TARGET_POWER_MIN) {
1714 IWL_WARN(priv, "Requested user TXPOWER %d below lower limit %d.\n",
1715 tx_power,
1716 IWL_TX_POWER_TARGET_POWER_MIN);
1717 return -EINVAL;
1718 }
1719
1720 if (tx_power > IWL_TX_POWER_TARGET_POWER_MAX) {
1721 IWL_WARN(priv, "Requested user TXPOWER %d above upper limit %d.\n",
1722 tx_power,
1723 IWL_TX_POWER_TARGET_POWER_MAX);
1724 return -EINVAL;
1725 }
1726
1727 if (priv->tx_power_user_lmt != tx_power)
1728 force = true;
1729
1730 priv->tx_power_user_lmt = tx_power;
1731
1732 /* if nic is not up don't send command */
1733 if (!iwl_is_ready_rf(priv))
1734 return ret;
1735
1736 if (force && priv->cfg->ops->lib->send_tx_power)
1737 ret = priv->cfg->ops->lib->send_tx_power(priv);
1738
1739 return ret;
1740 }
1741 EXPORT_SYMBOL(iwl_set_tx_power);
1742
1743 void iwl_uninit_drv(struct iwl_priv *priv)
1744 {
1745 iwl_calib_free_results(priv);
1746 iwlcore_free_geos(priv);
1747 iwl_free_channel_map(priv);
1748 kfree(priv->scan);
1749 }
1750 EXPORT_SYMBOL(iwl_uninit_drv);
1751
1752 #define ICT_COUNT (PAGE_SIZE/sizeof(u32))
1753
1754 /* Free dram table */
1755 void iwl_free_isr_ict(struct iwl_priv *priv)
1756 {
1757 if (priv->ict_tbl_vir) {
1758 pci_free_consistent(priv->pci_dev, (sizeof(u32) * ICT_COUNT) +
1759 PAGE_SIZE, priv->ict_tbl_vir,
1760 priv->ict_tbl_dma);
1761 priv->ict_tbl_vir = NULL;
1762 }
1763 }
1764 EXPORT_SYMBOL(iwl_free_isr_ict);
1765
1766
1767 /* allocate dram shared table it is a PAGE_SIZE aligned
1768 * also reset all data related to ICT table interrupt.
1769 */
1770 int iwl_alloc_isr_ict(struct iwl_priv *priv)
1771 {
1772
1773 if (priv->cfg->use_isr_legacy)
1774 return 0;
1775 /* allocate shrared data table */
1776 priv->ict_tbl_vir = pci_alloc_consistent(priv->pci_dev, (sizeof(u32) *
1777 ICT_COUNT) + PAGE_SIZE,
1778 &priv->ict_tbl_dma);
1779 if (!priv->ict_tbl_vir)
1780 return -ENOMEM;
1781
1782 /* align table to PAGE_SIZE boundry */
1783 priv->aligned_ict_tbl_dma = ALIGN(priv->ict_tbl_dma, PAGE_SIZE);
1784
1785 IWL_DEBUG_ISR(priv, "ict dma addr %Lx dma aligned %Lx diff %d\n",
1786 (unsigned long long)priv->ict_tbl_dma,
1787 (unsigned long long)priv->aligned_ict_tbl_dma,
1788 (int)(priv->aligned_ict_tbl_dma - priv->ict_tbl_dma));
1789
1790 priv->ict_tbl = priv->ict_tbl_vir +
1791 (priv->aligned_ict_tbl_dma - priv->ict_tbl_dma);
1792
1793 IWL_DEBUG_ISR(priv, "ict vir addr %p vir aligned %p diff %d\n",
1794 priv->ict_tbl, priv->ict_tbl_vir,
1795 (int)(priv->aligned_ict_tbl_dma - priv->ict_tbl_dma));
1796
1797 /* reset table and index to all 0 */
1798 memset(priv->ict_tbl_vir,0, (sizeof(u32) * ICT_COUNT) + PAGE_SIZE);
1799 priv->ict_index = 0;
1800
1801 /* add periodic RX interrupt */
1802 priv->inta_mask |= CSR_INT_BIT_RX_PERIODIC;
1803 return 0;
1804 }
1805 EXPORT_SYMBOL(iwl_alloc_isr_ict);
1806
1807 /* Device is going up inform it about using ICT interrupt table,
1808 * also we need to tell the driver to start using ICT interrupt.
1809 */
1810 int iwl_reset_ict(struct iwl_priv *priv)
1811 {
1812 u32 val;
1813 unsigned long flags;
1814
1815 if (!priv->ict_tbl_vir)
1816 return 0;
1817
1818 spin_lock_irqsave(&priv->lock, flags);
1819 iwl_disable_interrupts(priv);
1820
1821 memset(&priv->ict_tbl[0],0, sizeof(u32) * ICT_COUNT);
1822
1823 val = priv->aligned_ict_tbl_dma >> PAGE_SHIFT;
1824
1825 val |= CSR_DRAM_INT_TBL_ENABLE;
1826 val |= CSR_DRAM_INIT_TBL_WRAP_CHECK;
1827
1828 IWL_DEBUG_ISR(priv, "CSR_DRAM_INT_TBL_REG =0x%X "
1829 "aligned dma address %Lx\n",
1830 val, (unsigned long long)priv->aligned_ict_tbl_dma);
1831
1832 iwl_write32(priv, CSR_DRAM_INT_TBL_REG, val);
1833 priv->use_ict = true;
1834 priv->ict_index = 0;
1835 iwl_write32(priv, CSR_INT, priv->inta_mask);
1836 iwl_enable_interrupts(priv);
1837 spin_unlock_irqrestore(&priv->lock, flags);
1838
1839 return 0;
1840 }
1841 EXPORT_SYMBOL(iwl_reset_ict);
1842
1843 /* Device is going down disable ict interrupt usage */
1844 void iwl_disable_ict(struct iwl_priv *priv)
1845 {
1846 unsigned long flags;
1847
1848 spin_lock_irqsave(&priv->lock, flags);
1849 priv->use_ict = false;
1850 spin_unlock_irqrestore(&priv->lock, flags);
1851 }
1852 EXPORT_SYMBOL(iwl_disable_ict);
1853
1854 /* interrupt handler using ict table, with this interrupt driver will
1855 * stop using INTA register to get device's interrupt, reading this register
1856 * is expensive, device will write interrupts in ICT dram table, increment
1857 * index then will fire interrupt to driver, driver will OR all ICT table
1858 * entries from current index up to table entry with 0 value. the result is
1859 * the interrupt we need to service, driver will set the entries back to 0 and
1860 * set index.
1861 */
1862 irqreturn_t iwl_isr_ict(int irq, void *data)
1863 {
1864 struct iwl_priv *priv = data;
1865 u32 inta, inta_mask;
1866 u32 val = 0;
1867
1868 if (!priv)
1869 return IRQ_NONE;
1870
1871 /* dram interrupt table not set yet,
1872 * use legacy interrupt.
1873 */
1874 if (!priv->use_ict)
1875 return iwl_isr(irq, data);
1876
1877 spin_lock(&priv->lock);
1878
1879 /* Disable (but don't clear!) interrupts here to avoid
1880 * back-to-back ISRs and sporadic interrupts from our NIC.
1881 * If we have something to service, the tasklet will re-enable ints.
1882 * If we *don't* have something, we'll re-enable before leaving here.
1883 */
1884 inta_mask = iwl_read32(priv, CSR_INT_MASK); /* just for debug */
1885 iwl_write32(priv, CSR_INT_MASK, 0x00000000);
1886
1887
1888 /* Ignore interrupt if there's nothing in NIC to service.
1889 * This may be due to IRQ shared with another device,
1890 * or due to sporadic interrupts thrown from our NIC. */
1891 if (!priv->ict_tbl[priv->ict_index]) {
1892 IWL_DEBUG_ISR(priv, "Ignore interrupt, inta == 0\n");
1893 goto none;
1894 }
1895
1896 /* read all entries that not 0 start with ict_index */
1897 while (priv->ict_tbl[priv->ict_index]) {
1898
1899 val |= priv->ict_tbl[priv->ict_index];
1900 IWL_DEBUG_ISR(priv, "ICT index %d value 0x%08X\n",
1901 priv->ict_index,
1902 priv->ict_tbl[priv->ict_index]);
1903 priv->ict_tbl[priv->ict_index] = 0;
1904 priv->ict_index = iwl_queue_inc_wrap(priv->ict_index,
1905 ICT_COUNT);
1906
1907 }
1908
1909 /* We should not get this value, just ignore it. */
1910 if (val == 0xffffffff)
1911 val = 0;
1912
1913 inta = (0xff & val) | ((0xff00 & val) << 16);
1914 IWL_DEBUG_ISR(priv, "ISR inta 0x%08x, enabled 0x%08x ict 0x%08x\n",
1915 inta, inta_mask, val);
1916
1917 inta &= priv->inta_mask;
1918 priv->inta |= inta;
1919
1920 /* iwl_irq_tasklet() will service interrupts and re-enable them */
1921 if (likely(inta))
1922 tasklet_schedule(&priv->irq_tasklet);
1923 else if (test_bit(STATUS_INT_ENABLED, &priv->status) && !priv->inta) {
1924 /* Allow interrupt if was disabled by this handler and
1925 * no tasklet was schedules, We should not enable interrupt,
1926 * tasklet will enable it.
1927 */
1928 iwl_enable_interrupts(priv);
1929 }
1930
1931 spin_unlock(&priv->lock);
1932 return IRQ_HANDLED;
1933
1934 none:
1935 /* re-enable interrupts here since we don't have anything to service.
1936 * only Re-enable if disabled by irq.
1937 */
1938 if (test_bit(STATUS_INT_ENABLED, &priv->status) && !priv->inta)
1939 iwl_enable_interrupts(priv);
1940
1941 spin_unlock(&priv->lock);
1942 return IRQ_NONE;
1943 }
1944 EXPORT_SYMBOL(iwl_isr_ict);
1945
1946
1947 static irqreturn_t iwl_isr(int irq, void *data)
1948 {
1949 struct iwl_priv *priv = data;
1950 u32 inta, inta_mask;
1951 #ifdef CONFIG_IWLWIFI_DEBUG
1952 u32 inta_fh;
1953 #endif
1954 if (!priv)
1955 return IRQ_NONE;
1956
1957 spin_lock(&priv->lock);
1958
1959 /* Disable (but don't clear!) interrupts here to avoid
1960 * back-to-back ISRs and sporadic interrupts from our NIC.
1961 * If we have something to service, the tasklet will re-enable ints.
1962 * If we *don't* have something, we'll re-enable before leaving here. */
1963 inta_mask = iwl_read32(priv, CSR_INT_MASK); /* just for debug */
1964 iwl_write32(priv, CSR_INT_MASK, 0x00000000);
1965
1966 /* Discover which interrupts are active/pending */
1967 inta = iwl_read32(priv, CSR_INT);
1968
1969 /* Ignore interrupt if there's nothing in NIC to service.
1970 * This may be due to IRQ shared with another device,
1971 * or due to sporadic interrupts thrown from our NIC. */
1972 if (!inta) {
1973 IWL_DEBUG_ISR(priv, "Ignore interrupt, inta == 0\n");
1974 goto none;
1975 }
1976
1977 if ((inta == 0xFFFFFFFF) || ((inta & 0xFFFFFFF0) == 0xa5a5a5a0)) {
1978 /* Hardware disappeared. It might have already raised
1979 * an interrupt */
1980 IWL_WARN(priv, "HARDWARE GONE?? INTA == 0x%08x\n", inta);
1981 goto unplugged;
1982 }
1983
1984 #ifdef CONFIG_IWLWIFI_DEBUG
1985 if (iwl_debug_level & (IWL_DL_ISR)) {
1986 inta_fh = iwl_read32(priv, CSR_FH_INT_STATUS);
1987 IWL_DEBUG_ISR(priv, "ISR inta 0x%08x, enabled 0x%08x, "
1988 "fh 0x%08x\n", inta, inta_mask, inta_fh);
1989 }
1990 #endif
1991
1992 priv->inta |= inta;
1993 /* iwl_irq_tasklet() will service interrupts and re-enable them */
1994 if (likely(inta))
1995 tasklet_schedule(&priv->irq_tasklet);
1996 else if (test_bit(STATUS_INT_ENABLED, &priv->status) && !priv->inta)
1997 iwl_enable_interrupts(priv);
1998
1999 unplugged:
2000 spin_unlock(&priv->lock);
2001 return IRQ_HANDLED;
2002
2003 none:
2004 /* re-enable interrupts here since we don't have anything to service. */
2005 /* only Re-enable if diabled by irq and no schedules tasklet. */
2006 if (test_bit(STATUS_INT_ENABLED, &priv->status) && !priv->inta)
2007 iwl_enable_interrupts(priv);
2008
2009 spin_unlock(&priv->lock);
2010 return IRQ_NONE;
2011 }
2012
2013 irqreturn_t iwl_isr_legacy(int irq, void *data)
2014 {
2015 struct iwl_priv *priv = data;
2016 u32 inta, inta_mask;
2017 u32 inta_fh;
2018 if (!priv)
2019 return IRQ_NONE;
2020
2021 spin_lock(&priv->lock);
2022
2023 /* Disable (but don't clear!) interrupts here to avoid
2024 * back-to-back ISRs and sporadic interrupts from our NIC.
2025 * If we have something to service, the tasklet will re-enable ints.
2026 * If we *don't* have something, we'll re-enable before leaving here. */
2027 inta_mask = iwl_read32(priv, CSR_INT_MASK); /* just for debug */
2028 iwl_write32(priv, CSR_INT_MASK, 0x00000000);
2029
2030 /* Discover which interrupts are active/pending */
2031 inta = iwl_read32(priv, CSR_INT);
2032 inta_fh = iwl_read32(priv, CSR_FH_INT_STATUS);
2033
2034 /* Ignore interrupt if there's nothing in NIC to service.
2035 * This may be due to IRQ shared with another device,
2036 * or due to sporadic interrupts thrown from our NIC. */
2037 if (!inta && !inta_fh) {
2038 IWL_DEBUG_ISR(priv, "Ignore interrupt, inta == 0, inta_fh == 0\n");
2039 goto none;
2040 }
2041
2042 if ((inta == 0xFFFFFFFF) || ((inta & 0xFFFFFFF0) == 0xa5a5a5a0)) {
2043 /* Hardware disappeared. It might have already raised
2044 * an interrupt */
2045 IWL_WARN(priv, "HARDWARE GONE?? INTA == 0x%08x\n", inta);
2046 goto unplugged;
2047 }
2048
2049 IWL_DEBUG_ISR(priv, "ISR inta 0x%08x, enabled 0x%08x, fh 0x%08x\n",
2050 inta, inta_mask, inta_fh);
2051
2052 inta &= ~CSR_INT_BIT_SCD;
2053
2054 /* iwl_irq_tasklet() will service interrupts and re-enable them */
2055 if (likely(inta || inta_fh))
2056 tasklet_schedule(&priv->irq_tasklet);
2057
2058 unplugged:
2059 spin_unlock(&priv->lock);
2060 return IRQ_HANDLED;
2061
2062 none:
2063 /* re-enable interrupts here since we don't have anything to service. */
2064 /* only Re-enable if diabled by irq */
2065 if (test_bit(STATUS_INT_ENABLED, &priv->status))
2066 iwl_enable_interrupts(priv);
2067 spin_unlock(&priv->lock);
2068 return IRQ_NONE;
2069 }
2070 EXPORT_SYMBOL(iwl_isr_legacy);
2071
2072 int iwl_send_bt_config(struct iwl_priv *priv)
2073 {
2074 struct iwl_bt_cmd bt_cmd = {
2075 .flags = 3,
2076 .lead_time = 0xAA,
2077 .max_kill = 1,
2078 .kill_ack_mask = 0,
2079 .kill_cts_mask = 0,
2080 };
2081
2082 return iwl_send_cmd_pdu(priv, REPLY_BT_CONFIG,
2083 sizeof(struct iwl_bt_cmd), &bt_cmd);
2084 }
2085 EXPORT_SYMBOL(iwl_send_bt_config);
2086
2087 int iwl_send_statistics_request(struct iwl_priv *priv, u8 flags)
2088 {
2089 u32 stat_flags = 0;
2090 struct iwl_host_cmd cmd = {
2091 .id = REPLY_STATISTICS_CMD,
2092 .flags = flags,
2093 .len = sizeof(stat_flags),
2094 .data = (u8 *) &stat_flags,
2095 };
2096 return iwl_send_cmd(priv, &cmd);
2097 }
2098 EXPORT_SYMBOL(iwl_send_statistics_request);
2099
2100 /**
2101 * iwl_verify_inst_sparse - verify runtime uCode image in card vs. host,
2102 * using sample data 100 bytes apart. If these sample points are good,
2103 * it's a pretty good bet that everything between them is good, too.
2104 */
2105 static int iwlcore_verify_inst_sparse(struct iwl_priv *priv, __le32 *image, u32 len)
2106 {
2107 u32 val;
2108 int ret = 0;
2109 u32 errcnt = 0;
2110 u32 i;
2111
2112 IWL_DEBUG_INFO(priv, "ucode inst image size is %u\n", len);
2113
2114 for (i = 0; i < len; i += 100, image += 100/sizeof(u32)) {
2115 /* read data comes through single port, auto-incr addr */
2116 /* NOTE: Use the debugless read so we don't flood kernel log
2117 * if IWL_DL_IO is set */
2118 iwl_write_direct32(priv, HBUS_TARG_MEM_RADDR,
2119 i + IWL49_RTC_INST_LOWER_BOUND);
2120 val = _iwl_read_direct32(priv, HBUS_TARG_MEM_RDAT);
2121 if (val != le32_to_cpu(*image)) {
2122 ret = -EIO;
2123 errcnt++;
2124 if (errcnt >= 3)
2125 break;
2126 }
2127 }
2128
2129 return ret;
2130 }
2131
2132 /**
2133 * iwlcore_verify_inst_full - verify runtime uCode image in card vs. host,
2134 * looking at all data.
2135 */
2136 static int iwl_verify_inst_full(struct iwl_priv *priv, __le32 *image,
2137 u32 len)
2138 {
2139 u32 val;
2140 u32 save_len = len;
2141 int ret = 0;
2142 u32 errcnt;
2143
2144 IWL_DEBUG_INFO(priv, "ucode inst image size is %u\n", len);
2145
2146 iwl_write_direct32(priv, HBUS_TARG_MEM_RADDR,
2147 IWL49_RTC_INST_LOWER_BOUND);
2148
2149 errcnt = 0;
2150 for (; len > 0; len -= sizeof(u32), image++) {
2151 /* read data comes through single port, auto-incr addr */
2152 /* NOTE: Use the debugless read so we don't flood kernel log
2153 * if IWL_DL_IO is set */
2154 val = _iwl_read_direct32(priv, HBUS_TARG_MEM_RDAT);
2155 if (val != le32_to_cpu(*image)) {
2156 IWL_ERR(priv, "uCode INST section is invalid at "
2157 "offset 0x%x, is 0x%x, s/b 0x%x\n",
2158 save_len - len, val, le32_to_cpu(*image));
2159 ret = -EIO;
2160 errcnt++;
2161 if (errcnt >= 20)
2162 break;
2163 }
2164 }
2165
2166 if (!errcnt)
2167 IWL_DEBUG_INFO(priv,
2168 "ucode image in INSTRUCTION memory is good\n");
2169
2170 return ret;
2171 }
2172
2173 /**
2174 * iwl_verify_ucode - determine which instruction image is in SRAM,
2175 * and verify its contents
2176 */
2177 int iwl_verify_ucode(struct iwl_priv *priv)
2178 {
2179 __le32 *image;
2180 u32 len;
2181 int ret;
2182
2183 /* Try bootstrap */
2184 image = (__le32 *)priv->ucode_boot.v_addr;
2185 len = priv->ucode_boot.len;
2186 ret = iwlcore_verify_inst_sparse(priv, image, len);
2187 if (!ret) {
2188 IWL_DEBUG_INFO(priv, "Bootstrap uCode is good in inst SRAM\n");
2189 return 0;
2190 }
2191
2192 /* Try initialize */
2193 image = (__le32 *)priv->ucode_init.v_addr;
2194 len = priv->ucode_init.len;
2195 ret = iwlcore_verify_inst_sparse(priv, image, len);
2196 if (!ret) {
2197 IWL_DEBUG_INFO(priv, "Initialize uCode is good in inst SRAM\n");
2198 return 0;
2199 }
2200
2201 /* Try runtime/protocol */
2202 image = (__le32 *)priv->ucode_code.v_addr;
2203 len = priv->ucode_code.len;
2204 ret = iwlcore_verify_inst_sparse(priv, image, len);
2205 if (!ret) {
2206 IWL_DEBUG_INFO(priv, "Runtime uCode is good in inst SRAM\n");
2207 return 0;
2208 }
2209
2210 IWL_ERR(priv, "NO VALID UCODE IMAGE IN INSTRUCTION SRAM!!\n");
2211
2212 /* Since nothing seems to match, show first several data entries in
2213 * instruction SRAM, so maybe visual inspection will give a clue.
2214 * Selection of bootstrap image (vs. other images) is arbitrary. */
2215 image = (__le32 *)priv->ucode_boot.v_addr;
2216 len = priv->ucode_boot.len;
2217 ret = iwl_verify_inst_full(priv, image, len);
2218
2219 return ret;
2220 }
2221 EXPORT_SYMBOL(iwl_verify_ucode);
2222
2223
2224 void iwl_rf_kill_ct_config(struct iwl_priv *priv)
2225 {
2226 struct iwl_ct_kill_config cmd;
2227 struct iwl_ct_kill_throttling_config adv_cmd;
2228 unsigned long flags;
2229 int ret = 0;
2230
2231 spin_lock_irqsave(&priv->lock, flags);
2232 iwl_write32(priv, CSR_UCODE_DRV_GP1_CLR,
2233 CSR_UCODE_DRV_GP1_REG_BIT_CT_KILL_EXIT);
2234 spin_unlock_irqrestore(&priv->lock, flags);
2235 priv->power_data.ct_kill_toggle = false;
2236
2237 switch (priv->hw_rev & CSR_HW_REV_TYPE_MSK) {
2238 case CSR_HW_REV_TYPE_1000:
2239 case CSR_HW_REV_TYPE_6x00:
2240 case CSR_HW_REV_TYPE_6x50:
2241 adv_cmd.critical_temperature_enter =
2242 cpu_to_le32(priv->hw_params.ct_kill_threshold);
2243 adv_cmd.critical_temperature_exit =
2244 cpu_to_le32(priv->hw_params.ct_kill_exit_threshold);
2245
2246 ret = iwl_send_cmd_pdu(priv, REPLY_CT_KILL_CONFIG_CMD,
2247 sizeof(adv_cmd), &adv_cmd);
2248 break;
2249 default:
2250 cmd.critical_temperature_R =
2251 cpu_to_le32(priv->hw_params.ct_kill_threshold);
2252
2253 ret = iwl_send_cmd_pdu(priv, REPLY_CT_KILL_CONFIG_CMD,
2254 sizeof(cmd), &cmd);
2255 break;
2256 }
2257 ret = iwl_send_cmd_pdu(priv, REPLY_CT_KILL_CONFIG_CMD,
2258 sizeof(cmd), &cmd);
2259 if (ret)
2260 IWL_ERR(priv, "REPLY_CT_KILL_CONFIG_CMD failed\n");
2261 else
2262 IWL_DEBUG_INFO(priv, "REPLY_CT_KILL_CONFIG_CMD succeeded, "
2263 "critical temperature is %d\n",
2264 cmd.critical_temperature_R);
2265 }
2266 EXPORT_SYMBOL(iwl_rf_kill_ct_config);
2267
2268
2269 /*
2270 * CARD_STATE_CMD
2271 *
2272 * Use: Sets the device's internal card state to enable, disable, or halt
2273 *
2274 * When in the 'enable' state the card operates as normal.
2275 * When in the 'disable' state, the card enters into a low power mode.
2276 * When in the 'halt' state, the card is shut down and must be fully
2277 * restarted to come back on.
2278 */
2279 int iwl_send_card_state(struct iwl_priv *priv, u32 flags, u8 meta_flag)
2280 {
2281 struct iwl_host_cmd cmd = {
2282 .id = REPLY_CARD_STATE_CMD,
2283 .len = sizeof(u32),
2284 .data = &flags,
2285 .flags = meta_flag,
2286 };
2287
2288 return iwl_send_cmd(priv, &cmd);
2289 }
2290 EXPORT_SYMBOL(iwl_send_card_state);
2291
2292 void iwl_rx_pm_sleep_notif(struct iwl_priv *priv,
2293 struct iwl_rx_mem_buffer *rxb)
2294 {
2295 #ifdef CONFIG_IWLWIFI_DEBUG
2296 struct iwl_rx_packet *pkt = (struct iwl_rx_packet *)rxb->skb->data;
2297 struct iwl_sleep_notification *sleep = &(pkt->u.sleep_notif);
2298 IWL_DEBUG_RX(priv, "sleep mode: %d, src: %d\n",
2299 sleep->pm_sleep_mode, sleep->pm_wakeup_src);
2300 #endif
2301 }
2302 EXPORT_SYMBOL(iwl_rx_pm_sleep_notif);
2303
2304 void iwl_rx_pm_debug_statistics_notif(struct iwl_priv *priv,
2305 struct iwl_rx_mem_buffer *rxb)
2306 {
2307 struct iwl_rx_packet *pkt = (struct iwl_rx_packet *)rxb->skb->data;
2308 IWL_DEBUG_RADIO(priv, "Dumping %d bytes of unhandled "
2309 "notification for %s:\n",
2310 le32_to_cpu(pkt->len), get_cmd_string(pkt->hdr.cmd));
2311 iwl_print_hex_dump(IWL_DL_RADIO, pkt->u.raw, le32_to_cpu(pkt->len));
2312 }
2313 EXPORT_SYMBOL(iwl_rx_pm_debug_statistics_notif);
2314
2315 void iwl_rx_reply_error(struct iwl_priv *priv,
2316 struct iwl_rx_mem_buffer *rxb)
2317 {
2318 struct iwl_rx_packet *pkt = (struct iwl_rx_packet *)rxb->skb->data;
2319
2320 IWL_ERR(priv, "Error Reply type 0x%08X cmd %s (0x%02X) "
2321 "seq 0x%04X ser 0x%08X\n",
2322 le32_to_cpu(pkt->u.err_resp.error_type),
2323 get_cmd_string(pkt->u.err_resp.cmd_id),
2324 pkt->u.err_resp.cmd_id,
2325 le16_to_cpu(pkt->u.err_resp.bad_cmd_seq_num),
2326 le32_to_cpu(pkt->u.err_resp.error_info));
2327 }
2328 EXPORT_SYMBOL(iwl_rx_reply_error);
2329
2330 void iwl_clear_isr_stats(struct iwl_priv *priv)
2331 {
2332 memset(&priv->isr_stats, 0, sizeof(priv->isr_stats));
2333 }
2334 EXPORT_SYMBOL(iwl_clear_isr_stats);
2335
2336 int iwl_mac_conf_tx(struct ieee80211_hw *hw, u16 queue,
2337 const struct ieee80211_tx_queue_params *params)
2338 {
2339 struct iwl_priv *priv = hw->priv;
2340 unsigned long flags;
2341 int q;
2342
2343 IWL_DEBUG_MAC80211(priv, "enter\n");
2344
2345 if (!iwl_is_ready_rf(priv)) {
2346 IWL_DEBUG_MAC80211(priv, "leave - RF not ready\n");
2347 return -EIO;
2348 }
2349
2350 if (queue >= AC_NUM) {
2351 IWL_DEBUG_MAC80211(priv, "leave - queue >= AC_NUM %d\n", queue);
2352 return 0;
2353 }
2354
2355 q = AC_NUM - 1 - queue;
2356
2357 spin_lock_irqsave(&priv->lock, flags);
2358
2359 priv->qos_data.def_qos_parm.ac[q].cw_min = cpu_to_le16(params->cw_min);
2360 priv->qos_data.def_qos_parm.ac[q].cw_max = cpu_to_le16(params->cw_max);
2361 priv->qos_data.def_qos_parm.ac[q].aifsn = params->aifs;
2362 priv->qos_data.def_qos_parm.ac[q].edca_txop =
2363 cpu_to_le16((params->txop * 32));
2364
2365 priv->qos_data.def_qos_parm.ac[q].reserved1 = 0;
2366 priv->qos_data.qos_active = 1;
2367
2368 if (priv->iw_mode == NL80211_IFTYPE_AP)
2369 iwl_activate_qos(priv, 1);
2370 else if (priv->assoc_id && iwl_is_associated(priv))
2371 iwl_activate_qos(priv, 0);
2372
2373 spin_unlock_irqrestore(&priv->lock, flags);
2374
2375 IWL_DEBUG_MAC80211(priv, "leave\n");
2376 return 0;
2377 }
2378 EXPORT_SYMBOL(iwl_mac_conf_tx);
2379
2380 static void iwl_ht_conf(struct iwl_priv *priv,
2381 struct ieee80211_bss_conf *bss_conf)
2382 {
2383 struct ieee80211_sta_ht_cap *ht_conf;
2384 struct iwl_ht_info *iwl_conf = &priv->current_ht_config;
2385 struct ieee80211_sta *sta;
2386
2387 IWL_DEBUG_MAC80211(priv, "enter: \n");
2388
2389 if (!iwl_conf->is_ht)
2390 return;
2391
2392
2393 /*
2394 * It is totally wrong to base global information on something
2395 * that is valid only when associated, alas, this driver works
2396 * that way and I don't know how to fix it.
2397 */
2398
2399 rcu_read_lock();
2400 sta = ieee80211_find_sta(priv->hw, priv->bssid);
2401 if (!sta) {
2402 rcu_read_unlock();
2403 return;
2404 }
2405 ht_conf = &sta->ht_cap;
2406
2407 if (ht_conf->cap & IEEE80211_HT_CAP_SGI_20)
2408 iwl_conf->sgf |= HT_SHORT_GI_20MHZ;
2409 if (ht_conf->cap & IEEE80211_HT_CAP_SGI_40)
2410 iwl_conf->sgf |= HT_SHORT_GI_40MHZ;
2411
2412 iwl_conf->is_green_field = !!(ht_conf->cap & IEEE80211_HT_CAP_GRN_FLD);
2413 iwl_conf->max_amsdu_size =
2414 !!(ht_conf->cap & IEEE80211_HT_CAP_MAX_AMSDU);
2415
2416 iwl_conf->supported_chan_width =
2417 !!(ht_conf->cap & IEEE80211_HT_CAP_SUP_WIDTH_20_40);
2418
2419 /*
2420 * XXX: The HT configuration needs to be moved into iwl_mac_config()
2421 * to be done there correctly.
2422 */
2423
2424 iwl_conf->extension_chan_offset = IEEE80211_HT_PARAM_CHA_SEC_NONE;
2425 if (conf_is_ht40_minus(&priv->hw->conf))
2426 iwl_conf->extension_chan_offset = IEEE80211_HT_PARAM_CHA_SEC_BELOW;
2427 else if (conf_is_ht40_plus(&priv->hw->conf))
2428 iwl_conf->extension_chan_offset = IEEE80211_HT_PARAM_CHA_SEC_ABOVE;
2429
2430 /* If no above or below channel supplied disable FAT channel */
2431 if (iwl_conf->extension_chan_offset != IEEE80211_HT_PARAM_CHA_SEC_ABOVE &&
2432 iwl_conf->extension_chan_offset != IEEE80211_HT_PARAM_CHA_SEC_BELOW)
2433 iwl_conf->supported_chan_width = 0;
2434
2435 iwl_conf->sm_ps = (u8)((ht_conf->cap & IEEE80211_HT_CAP_SM_PS) >> 2);
2436
2437 memcpy(&iwl_conf->mcs, &ht_conf->mcs, 16);
2438
2439 iwl_conf->tx_chan_width = iwl_conf->supported_chan_width != 0;
2440 iwl_conf->ht_protection =
2441 bss_conf->ht_operation_mode & IEEE80211_HT_OP_MODE_PROTECTION;
2442 iwl_conf->non_GF_STA_present =
2443 !!(bss_conf->ht_operation_mode & IEEE80211_HT_OP_MODE_NON_GF_STA_PRSNT);
2444
2445 rcu_read_unlock();
2446
2447 IWL_DEBUG_MAC80211(priv, "leave\n");
2448 }
2449
2450 #define IWL_DELAY_NEXT_SCAN_AFTER_ASSOC (HZ*6)
2451 void iwl_bss_info_changed(struct ieee80211_hw *hw,
2452 struct ieee80211_vif *vif,
2453 struct ieee80211_bss_conf *bss_conf,
2454 u32 changes)
2455 {
2456 struct iwl_priv *priv = hw->priv;
2457 int ret;
2458
2459 IWL_DEBUG_MAC80211(priv, "changes = 0x%X\n", changes);
2460
2461 if (!iwl_is_alive(priv))
2462 return;
2463
2464 mutex_lock(&priv->mutex);
2465
2466 if (changes & BSS_CHANGED_BEACON &&
2467 priv->iw_mode == NL80211_IFTYPE_AP) {
2468 dev_kfree_skb(priv->ibss_beacon);
2469 priv->ibss_beacon = ieee80211_beacon_get(hw, vif);
2470 }
2471
2472 if (changes & BSS_CHANGED_BEACON_INT) {
2473 priv->beacon_int = bss_conf->beacon_int;
2474 /* TODO: in AP mode, do something to make this take effect */
2475 }
2476
2477 if (changes & BSS_CHANGED_BSSID) {
2478 IWL_DEBUG_MAC80211(priv, "BSSID %pM\n", bss_conf->bssid);
2479
2480 /*
2481 * If there is currently a HW scan going on in the
2482 * background then we need to cancel it else the RXON
2483 * below/in post_associate will fail.
2484 */
2485 if (iwl_scan_cancel_timeout(priv, 100)) {
2486 IWL_WARN(priv, "Aborted scan still in progress after 100ms\n");
2487 IWL_DEBUG_MAC80211(priv, "leaving - scan abort failed.\n");
2488 mutex_unlock(&priv->mutex);
2489 return;
2490 }
2491
2492 /* mac80211 only sets assoc when in STATION mode */
2493 if (priv->iw_mode == NL80211_IFTYPE_ADHOC ||
2494 bss_conf->assoc) {
2495 memcpy(priv->staging_rxon.bssid_addr,
2496 bss_conf->bssid, ETH_ALEN);
2497
2498 /* currently needed in a few places */
2499 memcpy(priv->bssid, bss_conf->bssid, ETH_ALEN);
2500 } else {
2501 priv->staging_rxon.filter_flags &=
2502 ~RXON_FILTER_ASSOC_MSK;
2503 }
2504
2505 }
2506
2507 /*
2508 * This needs to be after setting the BSSID in case
2509 * mac80211 decides to do both changes at once because
2510 * it will invoke post_associate.
2511 */
2512 if (priv->iw_mode == NL80211_IFTYPE_ADHOC &&
2513 changes & BSS_CHANGED_BEACON) {
2514 struct sk_buff *beacon = ieee80211_beacon_get(hw, vif);
2515
2516 if (beacon)
2517 iwl_mac_beacon_update(hw, beacon);
2518 }
2519
2520 if (changes & BSS_CHANGED_ERP_PREAMBLE) {
2521 IWL_DEBUG_MAC80211(priv, "ERP_PREAMBLE %d\n",
2522 bss_conf->use_short_preamble);
2523 if (bss_conf->use_short_preamble)
2524 priv->staging_rxon.flags |= RXON_FLG_SHORT_PREAMBLE_MSK;
2525 else
2526 priv->staging_rxon.flags &= ~RXON_FLG_SHORT_PREAMBLE_MSK;
2527 }
2528
2529 if (changes & BSS_CHANGED_ERP_CTS_PROT) {
2530 IWL_DEBUG_MAC80211(priv, "ERP_CTS %d\n", bss_conf->use_cts_prot);
2531 if (bss_conf->use_cts_prot && (priv->band != IEEE80211_BAND_5GHZ))
2532 priv->staging_rxon.flags |= RXON_FLG_TGG_PROTECT_MSK;
2533 else
2534 priv->staging_rxon.flags &= ~RXON_FLG_TGG_PROTECT_MSK;
2535 }
2536
2537 if (changes & BSS_CHANGED_BASIC_RATES) {
2538 /* XXX use this information
2539 *
2540 * To do that, remove code from iwl_set_rate() and put something
2541 * like this here:
2542 *
2543 if (A-band)
2544 priv->staging_rxon.ofdm_basic_rates =
2545 bss_conf->basic_rates;
2546 else
2547 priv->staging_rxon.ofdm_basic_rates =
2548 bss_conf->basic_rates >> 4;
2549 priv->staging_rxon.cck_basic_rates =
2550 bss_conf->basic_rates & 0xF;
2551 */
2552 }
2553
2554 if (changes & BSS_CHANGED_HT) {
2555 iwl_ht_conf(priv, bss_conf);
2556
2557 if (priv->cfg->ops->hcmd->set_rxon_chain)
2558 priv->cfg->ops->hcmd->set_rxon_chain(priv);
2559 }
2560
2561 if (changes & BSS_CHANGED_ASSOC) {
2562 IWL_DEBUG_MAC80211(priv, "ASSOC %d\n", bss_conf->assoc);
2563 if (bss_conf->assoc) {
2564 priv->assoc_id = bss_conf->aid;
2565 priv->beacon_int = bss_conf->beacon_int;
2566 priv->power_data.dtim_period = bss_conf->dtim_period;
2567 priv->timestamp = bss_conf->timestamp;
2568 priv->assoc_capability = bss_conf->assoc_capability;
2569
2570 /*
2571 * We have just associated, don't start scan too early
2572 * leave time for EAPOL exchange to complete.
2573 *
2574 * XXX: do this in mac80211
2575 */
2576 priv->next_scan_jiffies = jiffies +
2577 IWL_DELAY_NEXT_SCAN_AFTER_ASSOC;
2578 if (!iwl_is_rfkill(priv))
2579 priv->cfg->ops->lib->post_associate(priv);
2580 } else
2581 priv->assoc_id = 0;
2582
2583 }
2584
2585 if (changes && iwl_is_associated(priv) && priv->assoc_id) {
2586 IWL_DEBUG_MAC80211(priv, "Changes (%#x) while associated\n",
2587 changes);
2588 ret = iwl_send_rxon_assoc(priv);
2589 if (!ret) {
2590 /* Sync active_rxon with latest change. */
2591 memcpy((void *)&priv->active_rxon,
2592 &priv->staging_rxon,
2593 sizeof(struct iwl_rxon_cmd));
2594 }
2595 }
2596
2597 mutex_unlock(&priv->mutex);
2598
2599 IWL_DEBUG_MAC80211(priv, "leave\n");
2600 }
2601 EXPORT_SYMBOL(iwl_bss_info_changed);
2602
2603 int iwl_mac_beacon_update(struct ieee80211_hw *hw, struct sk_buff *skb)
2604 {
2605 struct iwl_priv *priv = hw->priv;
2606 unsigned long flags;
2607 __le64 timestamp;
2608
2609 IWL_DEBUG_MAC80211(priv, "enter\n");
2610
2611 if (!iwl_is_ready_rf(priv)) {
2612 IWL_DEBUG_MAC80211(priv, "leave - RF not ready\n");
2613 return -EIO;
2614 }
2615
2616 if (priv->iw_mode != NL80211_IFTYPE_ADHOC) {
2617 IWL_DEBUG_MAC80211(priv, "leave - not IBSS\n");
2618 return -EIO;
2619 }
2620
2621 spin_lock_irqsave(&priv->lock, flags);
2622
2623 if (priv->ibss_beacon)
2624 dev_kfree_skb(priv->ibss_beacon);
2625
2626 priv->ibss_beacon = skb;
2627
2628 priv->assoc_id = 0;
2629 timestamp = ((struct ieee80211_mgmt *)skb->data)->u.beacon.timestamp;
2630 priv->timestamp = le64_to_cpu(timestamp);
2631
2632 IWL_DEBUG_MAC80211(priv, "leave\n");
2633 spin_unlock_irqrestore(&priv->lock, flags);
2634
2635 iwl_reset_qos(priv);
2636
2637 priv->cfg->ops->lib->post_associate(priv);
2638
2639
2640 return 0;
2641 }
2642 EXPORT_SYMBOL(iwl_mac_beacon_update);
2643
2644 int iwl_set_mode(struct iwl_priv *priv, int mode)
2645 {
2646 if (mode == NL80211_IFTYPE_ADHOC) {
2647 const struct iwl_channel_info *ch_info;
2648
2649 ch_info = iwl_get_channel_info(priv,
2650 priv->band,
2651 le16_to_cpu(priv->staging_rxon.channel));
2652
2653 if (!ch_info || !is_channel_ibss(ch_info)) {
2654 IWL_ERR(priv, "channel %d not IBSS channel\n",
2655 le16_to_cpu(priv->staging_rxon.channel));
2656 return -EINVAL;
2657 }
2658 }
2659
2660 iwl_connection_init_rx_config(priv, mode);
2661
2662 if (priv->cfg->ops->hcmd->set_rxon_chain)
2663 priv->cfg->ops->hcmd->set_rxon_chain(priv);
2664
2665 memcpy(priv->staging_rxon.node_addr, priv->mac_addr, ETH_ALEN);
2666
2667 iwl_clear_stations_table(priv);
2668
2669 /* dont commit rxon if rf-kill is on*/
2670 if (!iwl_is_ready_rf(priv))
2671 return -EAGAIN;
2672
2673 iwlcore_commit_rxon(priv);
2674
2675 return 0;
2676 }
2677 EXPORT_SYMBOL(iwl_set_mode);
2678
2679 int iwl_mac_add_interface(struct ieee80211_hw *hw,
2680 struct ieee80211_if_init_conf *conf)
2681 {
2682 struct iwl_priv *priv = hw->priv;
2683 unsigned long flags;
2684
2685 IWL_DEBUG_MAC80211(priv, "enter: type %d\n", conf->type);
2686
2687 if (priv->vif) {
2688 IWL_DEBUG_MAC80211(priv, "leave - vif != NULL\n");
2689 return -EOPNOTSUPP;
2690 }
2691
2692 spin_lock_irqsave(&priv->lock, flags);
2693 priv->vif = conf->vif;
2694 priv->iw_mode = conf->type;
2695
2696 spin_unlock_irqrestore(&priv->lock, flags);
2697
2698 mutex_lock(&priv->mutex);
2699
2700 if (conf->mac_addr) {
2701 IWL_DEBUG_MAC80211(priv, "Set %pM\n", conf->mac_addr);
2702 memcpy(priv->mac_addr, conf->mac_addr, ETH_ALEN);
2703 }
2704
2705 if (iwl_set_mode(priv, conf->type) == -EAGAIN)
2706 /* we are not ready, will run again when ready */
2707 set_bit(STATUS_MODE_PENDING, &priv->status);
2708
2709 mutex_unlock(&priv->mutex);
2710
2711 IWL_DEBUG_MAC80211(priv, "leave\n");
2712 return 0;
2713 }
2714 EXPORT_SYMBOL(iwl_mac_add_interface);
2715
2716 void iwl_mac_remove_interface(struct ieee80211_hw *hw,
2717 struct ieee80211_if_init_conf *conf)
2718 {
2719 struct iwl_priv *priv = hw->priv;
2720
2721 IWL_DEBUG_MAC80211(priv, "enter\n");
2722
2723 mutex_lock(&priv->mutex);
2724
2725 if (iwl_is_ready_rf(priv)) {
2726 iwl_scan_cancel_timeout(priv, 100);
2727 priv->staging_rxon.filter_flags &= ~RXON_FILTER_ASSOC_MSK;
2728 iwlcore_commit_rxon(priv);
2729 }
2730 if (priv->vif == conf->vif) {
2731 priv->vif = NULL;
2732 memset(priv->bssid, 0, ETH_ALEN);
2733 }
2734 mutex_unlock(&priv->mutex);
2735
2736 IWL_DEBUG_MAC80211(priv, "leave\n");
2737
2738 }
2739 EXPORT_SYMBOL(iwl_mac_remove_interface);
2740
2741 /**
2742 * iwl_mac_config - mac80211 config callback
2743 *
2744 * We ignore conf->flags & IEEE80211_CONF_SHORT_SLOT_TIME since it seems to
2745 * be set inappropriately and the driver currently sets the hardware up to
2746 * use it whenever needed.
2747 */
2748 int iwl_mac_config(struct ieee80211_hw *hw, u32 changed)
2749 {
2750 struct iwl_priv *priv = hw->priv;
2751 const struct iwl_channel_info *ch_info;
2752 struct ieee80211_conf *conf = &hw->conf;
2753 unsigned long flags = 0;
2754 int ret = 0;
2755 u16 ch;
2756 int scan_active = 0;
2757
2758 mutex_lock(&priv->mutex);
2759
2760 IWL_DEBUG_MAC80211(priv, "enter to channel %d changed 0x%X\n",
2761 conf->channel->hw_value, changed);
2762
2763 if (unlikely(!priv->cfg->mod_params->disable_hw_scan &&
2764 test_bit(STATUS_SCANNING, &priv->status))) {
2765 scan_active = 1;
2766 IWL_DEBUG_MAC80211(priv, "leave - scanning\n");
2767 }
2768
2769
2770 /* during scanning mac80211 will delay channel setting until
2771 * scan finish with changed = 0
2772 */
2773 if (!changed || (changed & IEEE80211_CONF_CHANGE_CHANNEL)) {
2774 if (scan_active)
2775 goto set_ch_out;
2776
2777 ch = ieee80211_frequency_to_channel(conf->channel->center_freq);
2778 ch_info = iwl_get_channel_info(priv, conf->channel->band, ch);
2779 if (!is_channel_valid(ch_info)) {
2780 IWL_DEBUG_MAC80211(priv, "leave - invalid channel\n");
2781 ret = -EINVAL;
2782 goto set_ch_out;
2783 }
2784
2785 if (priv->iw_mode == NL80211_IFTYPE_ADHOC &&
2786 !is_channel_ibss(ch_info)) {
2787 IWL_ERR(priv, "channel %d in band %d not "
2788 "IBSS channel\n",
2789 conf->channel->hw_value, conf->channel->band);
2790 ret = -EINVAL;
2791 goto set_ch_out;
2792 }
2793
2794 priv->current_ht_config.is_ht = conf_is_ht(conf);
2795
2796 spin_lock_irqsave(&priv->lock, flags);
2797
2798
2799 /* if we are switching from ht to 2.4 clear flags
2800 * from any ht related info since 2.4 does not
2801 * support ht */
2802 if ((le16_to_cpu(priv->staging_rxon.channel) != ch))
2803 priv->staging_rxon.flags = 0;
2804
2805 iwl_set_rxon_channel(priv, conf->channel);
2806
2807 iwl_set_flags_for_band(priv, conf->channel->band);
2808 spin_unlock_irqrestore(&priv->lock, flags);
2809 set_ch_out:
2810 /* The list of supported rates and rate mask can be different
2811 * for each band; since the band may have changed, reset
2812 * the rate mask to what mac80211 lists */
2813 iwl_set_rate(priv);
2814 }
2815
2816 if (changed & IEEE80211_CONF_CHANGE_PS &&
2817 priv->iw_mode == NL80211_IFTYPE_STATION) {
2818 priv->power_data.power_disabled =
2819 !(conf->flags & IEEE80211_CONF_PS);
2820 ret = iwl_power_update_mode(priv, 0);
2821 if (ret)
2822 IWL_DEBUG_MAC80211(priv, "Error setting power level\n");
2823 }
2824
2825 if (changed & IEEE80211_CONF_CHANGE_POWER) {
2826 IWL_DEBUG_MAC80211(priv, "TX Power old=%d new=%d\n",
2827 priv->tx_power_user_lmt, conf->power_level);
2828
2829 iwl_set_tx_power(priv, conf->power_level, false);
2830 }
2831
2832 /* call to ensure that 4965 rx_chain is set properly in monitor mode */
2833 if (priv->cfg->ops->hcmd->set_rxon_chain)
2834 priv->cfg->ops->hcmd->set_rxon_chain(priv);
2835
2836 if (!iwl_is_ready(priv)) {
2837 IWL_DEBUG_MAC80211(priv, "leave - not ready\n");
2838 goto out;
2839 }
2840
2841 if (scan_active)
2842 goto out;
2843
2844 if (memcmp(&priv->active_rxon,
2845 &priv->staging_rxon, sizeof(priv->staging_rxon)))
2846 iwlcore_commit_rxon(priv);
2847 else
2848 IWL_DEBUG_INFO(priv, "Not re-sending same RXON configuration.\n");
2849
2850
2851 out:
2852 IWL_DEBUG_MAC80211(priv, "leave\n");
2853 mutex_unlock(&priv->mutex);
2854 return ret;
2855 }
2856 EXPORT_SYMBOL(iwl_mac_config);
2857
2858 int iwl_mac_get_tx_stats(struct ieee80211_hw *hw,
2859 struct ieee80211_tx_queue_stats *stats)
2860 {
2861 struct iwl_priv *priv = hw->priv;
2862 int i, avail;
2863 struct iwl_tx_queue *txq;
2864 struct iwl_queue *q;
2865 unsigned long flags;
2866
2867 IWL_DEBUG_MAC80211(priv, "enter\n");
2868
2869 if (!iwl_is_ready_rf(priv)) {
2870 IWL_DEBUG_MAC80211(priv, "leave - RF not ready\n");
2871 return -EIO;
2872 }
2873
2874 spin_lock_irqsave(&priv->lock, flags);
2875
2876 for (i = 0; i < AC_NUM; i++) {
2877 txq = &priv->txq[i];
2878 q = &txq->q;
2879 avail = iwl_queue_space(q);
2880
2881 stats[i].len = q->n_window - avail;
2882 stats[i].limit = q->n_window - q->high_mark;
2883 stats[i].count = q->n_window;
2884
2885 }
2886 spin_unlock_irqrestore(&priv->lock, flags);
2887
2888 IWL_DEBUG_MAC80211(priv, "leave\n");
2889
2890 return 0;
2891 }
2892 EXPORT_SYMBOL(iwl_mac_get_tx_stats);
2893
2894 void iwl_mac_reset_tsf(struct ieee80211_hw *hw)
2895 {
2896 struct iwl_priv *priv = hw->priv;
2897 unsigned long flags;
2898
2899 mutex_lock(&priv->mutex);
2900 IWL_DEBUG_MAC80211(priv, "enter\n");
2901
2902 spin_lock_irqsave(&priv->lock, flags);
2903 memset(&priv->current_ht_config, 0, sizeof(struct iwl_ht_info));
2904 spin_unlock_irqrestore(&priv->lock, flags);
2905
2906 iwl_reset_qos(priv);
2907
2908 spin_lock_irqsave(&priv->lock, flags);
2909 priv->assoc_id = 0;
2910 priv->assoc_capability = 0;
2911 priv->assoc_station_added = 0;
2912
2913 /* new association get rid of ibss beacon skb */
2914 if (priv->ibss_beacon)
2915 dev_kfree_skb(priv->ibss_beacon);
2916
2917 priv->ibss_beacon = NULL;
2918
2919 priv->beacon_int = priv->vif->bss_conf.beacon_int;
2920 priv->timestamp = 0;
2921 if ((priv->iw_mode == NL80211_IFTYPE_STATION))
2922 priv->beacon_int = 0;
2923
2924 spin_unlock_irqrestore(&priv->lock, flags);
2925
2926 if (!iwl_is_ready_rf(priv)) {
2927 IWL_DEBUG_MAC80211(priv, "leave - not ready\n");
2928 mutex_unlock(&priv->mutex);
2929 return;
2930 }
2931
2932 /* we are restarting association process
2933 * clear RXON_FILTER_ASSOC_MSK bit
2934 */
2935 if (priv->iw_mode != NL80211_IFTYPE_AP) {
2936 iwl_scan_cancel_timeout(priv, 100);
2937 priv->staging_rxon.filter_flags &= ~RXON_FILTER_ASSOC_MSK;
2938 iwlcore_commit_rxon(priv);
2939 }
2940
2941 if (priv->iw_mode != NL80211_IFTYPE_ADHOC) {
2942 IWL_DEBUG_MAC80211(priv, "leave - not in IBSS\n");
2943 mutex_unlock(&priv->mutex);
2944 return;
2945 }
2946
2947 iwl_set_rate(priv);
2948
2949 mutex_unlock(&priv->mutex);
2950
2951 IWL_DEBUG_MAC80211(priv, "leave\n");
2952 }
2953 EXPORT_SYMBOL(iwl_mac_reset_tsf);
2954
2955 #ifdef CONFIG_PM
2956
2957 int iwl_pci_suspend(struct pci_dev *pdev, pm_message_t state)
2958 {
2959 struct iwl_priv *priv = pci_get_drvdata(pdev);
2960
2961 /*
2962 * This function is called when system goes into suspend state
2963 * mac80211 will call iwl_mac_stop() from the mac80211 suspend function
2964 * first but since iwl_mac_stop() has no knowledge of who the caller is,
2965 * it will not call apm_ops.stop() to stop the DMA operation.
2966 * Calling apm_ops.stop here to make sure we stop the DMA.
2967 */
2968 priv->cfg->ops->lib->apm_ops.stop(priv);
2969
2970 pci_save_state(pdev);
2971 pci_disable_device(pdev);
2972 pci_set_power_state(pdev, PCI_D3hot);
2973
2974 return 0;
2975 }
2976 EXPORT_SYMBOL(iwl_pci_suspend);
2977
2978 int iwl_pci_resume(struct pci_dev *pdev)
2979 {
2980 struct iwl_priv *priv = pci_get_drvdata(pdev);
2981 int ret;
2982
2983 pci_set_power_state(pdev, PCI_D0);
2984 ret = pci_enable_device(pdev);
2985 if (ret)
2986 return ret;
2987 pci_restore_state(pdev);
2988 iwl_enable_interrupts(priv);
2989
2990 return 0;
2991 }
2992 EXPORT_SYMBOL(iwl_pci_resume);
2993
2994 #endif /* CONFIG_PM */
Linux kernel - Deliverables
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