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[deliverable/linux.git] / drivers / net / wireless / iwlwifi / iwl-core.c
1 /******************************************************************************
2 *
3 * GPL LICENSE SUMMARY
4 *
5 * Copyright(c) 2008 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 * Tomas Winkler <tomas.winkler@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/version.h>
32 #include <net/mac80211.h>
33
34 struct iwl_priv; /* FIXME: remove */
35 #include "iwl-debug.h"
36 #include "iwl-eeprom.h"
37 #include "iwl-dev.h" /* FIXME: remove */
38 #include "iwl-core.h"
39 #include "iwl-io.h"
40 #include "iwl-rfkill.h"
41 #include "iwl-power.h"
42
43
44 MODULE_DESCRIPTION("iwl core");
45 MODULE_VERSION(IWLWIFI_VERSION);
46 MODULE_AUTHOR(DRV_COPYRIGHT);
47 MODULE_LICENSE("GPL");
48
49 #define IWL_DECLARE_RATE_INFO(r, s, ip, in, rp, rn, pp, np) \
50 [IWL_RATE_##r##M_INDEX] = { IWL_RATE_##r##M_PLCP, \
51 IWL_RATE_SISO_##s##M_PLCP, \
52 IWL_RATE_MIMO2_##s##M_PLCP,\
53 IWL_RATE_MIMO3_##s##M_PLCP,\
54 IWL_RATE_##r##M_IEEE, \
55 IWL_RATE_##ip##M_INDEX, \
56 IWL_RATE_##in##M_INDEX, \
57 IWL_RATE_##rp##M_INDEX, \
58 IWL_RATE_##rn##M_INDEX, \
59 IWL_RATE_##pp##M_INDEX, \
60 IWL_RATE_##np##M_INDEX }
61
62 /*
63 * Parameter order:
64 * rate, ht rate, prev rate, next rate, prev tgg rate, next tgg rate
65 *
66 * If there isn't a valid next or previous rate then INV is used which
67 * maps to IWL_RATE_INVALID
68 *
69 */
70 const struct iwl_rate_info iwl_rates[IWL_RATE_COUNT] = {
71 IWL_DECLARE_RATE_INFO(1, INV, INV, 2, INV, 2, INV, 2), /* 1mbps */
72 IWL_DECLARE_RATE_INFO(2, INV, 1, 5, 1, 5, 1, 5), /* 2mbps */
73 IWL_DECLARE_RATE_INFO(5, INV, 2, 6, 2, 11, 2, 11), /*5.5mbps */
74 IWL_DECLARE_RATE_INFO(11, INV, 9, 12, 9, 12, 5, 18), /* 11mbps */
75 IWL_DECLARE_RATE_INFO(6, 6, 5, 9, 5, 11, 5, 11), /* 6mbps */
76 IWL_DECLARE_RATE_INFO(9, 6, 6, 11, 6, 11, 5, 11), /* 9mbps */
77 IWL_DECLARE_RATE_INFO(12, 12, 11, 18, 11, 18, 11, 18), /* 12mbps */
78 IWL_DECLARE_RATE_INFO(18, 18, 12, 24, 12, 24, 11, 24), /* 18mbps */
79 IWL_DECLARE_RATE_INFO(24, 24, 18, 36, 18, 36, 18, 36), /* 24mbps */
80 IWL_DECLARE_RATE_INFO(36, 36, 24, 48, 24, 48, 24, 48), /* 36mbps */
81 IWL_DECLARE_RATE_INFO(48, 48, 36, 54, 36, 54, 36, 54), /* 48mbps */
82 IWL_DECLARE_RATE_INFO(54, 54, 48, INV, 48, INV, 48, INV),/* 54mbps */
83 IWL_DECLARE_RATE_INFO(60, 60, 48, INV, 48, INV, 48, INV),/* 60mbps */
84 /* FIXME:RS: ^^ should be INV (legacy) */
85 };
86 EXPORT_SYMBOL(iwl_rates);
87
88 /**
89 * translate ucode response to mac80211 tx status control values
90 */
91 void iwl_hwrate_to_tx_control(struct iwl_priv *priv, u32 rate_n_flags,
92 struct ieee80211_tx_info *control)
93 {
94 int rate_index;
95
96 control->antenna_sel_tx =
97 ((rate_n_flags & RATE_MCS_ANT_ABC_MSK) >> RATE_MCS_ANT_POS);
98 if (rate_n_flags & RATE_MCS_HT_MSK)
99 control->flags |= IEEE80211_TX_CTL_OFDM_HT;
100 if (rate_n_flags & RATE_MCS_GF_MSK)
101 control->flags |= IEEE80211_TX_CTL_GREEN_FIELD;
102 if (rate_n_flags & RATE_MCS_FAT_MSK)
103 control->flags |= IEEE80211_TX_CTL_40_MHZ_WIDTH;
104 if (rate_n_flags & RATE_MCS_DUP_MSK)
105 control->flags |= IEEE80211_TX_CTL_DUP_DATA;
106 if (rate_n_flags & RATE_MCS_SGI_MSK)
107 control->flags |= IEEE80211_TX_CTL_SHORT_GI;
108 rate_index = iwl_hwrate_to_plcp_idx(rate_n_flags);
109 if (control->band == IEEE80211_BAND_5GHZ)
110 rate_index -= IWL_FIRST_OFDM_RATE;
111 control->tx_rate_idx = rate_index;
112 }
113 EXPORT_SYMBOL(iwl_hwrate_to_tx_control);
114
115 int iwl_hwrate_to_plcp_idx(u32 rate_n_flags)
116 {
117 int idx = 0;
118
119 /* HT rate format */
120 if (rate_n_flags & RATE_MCS_HT_MSK) {
121 idx = (rate_n_flags & 0xff);
122
123 if (idx >= IWL_RATE_MIMO2_6M_PLCP)
124 idx = idx - IWL_RATE_MIMO2_6M_PLCP;
125
126 idx += IWL_FIRST_OFDM_RATE;
127 /* skip 9M not supported in ht*/
128 if (idx >= IWL_RATE_9M_INDEX)
129 idx += 1;
130 if ((idx >= IWL_FIRST_OFDM_RATE) && (idx <= IWL_LAST_OFDM_RATE))
131 return idx;
132
133 /* legacy rate format, search for match in table */
134 } else {
135 for (idx = 0; idx < ARRAY_SIZE(iwl_rates); idx++)
136 if (iwl_rates[idx].plcp == (rate_n_flags & 0xFF))
137 return idx;
138 }
139
140 return -1;
141 }
142 EXPORT_SYMBOL(iwl_hwrate_to_plcp_idx);
143
144
145
146 const u8 iwl_bcast_addr[ETH_ALEN] = { 0xFF, 0xFF, 0xFF, 0xFF, 0xFF, 0xFF };
147 EXPORT_SYMBOL(iwl_bcast_addr);
148
149
150 /* This function both allocates and initializes hw and priv. */
151 struct ieee80211_hw *iwl_alloc_all(struct iwl_cfg *cfg,
152 struct ieee80211_ops *hw_ops)
153 {
154 struct iwl_priv *priv;
155
156 /* mac80211 allocates memory for this device instance, including
157 * space for this driver's private structure */
158 struct ieee80211_hw *hw =
159 ieee80211_alloc_hw(sizeof(struct iwl_priv), hw_ops);
160 if (hw == NULL) {
161 IWL_ERROR("Can not allocate network device\n");
162 goto out;
163 }
164
165 priv = hw->priv;
166 priv->hw = hw;
167
168 out:
169 return hw;
170 }
171 EXPORT_SYMBOL(iwl_alloc_all);
172
173 void iwl_hw_detect(struct iwl_priv *priv)
174 {
175 priv->hw_rev = _iwl_read32(priv, CSR_HW_REV);
176 priv->hw_wa_rev = _iwl_read32(priv, CSR_HW_REV_WA_REG);
177 pci_read_config_byte(priv->pci_dev, PCI_REVISION_ID, &priv->rev_id);
178 }
179 EXPORT_SYMBOL(iwl_hw_detect);
180
181 /* Tell nic where to find the "keep warm" buffer */
182 int iwl_kw_init(struct iwl_priv *priv)
183 {
184 unsigned long flags;
185 int ret;
186
187 spin_lock_irqsave(&priv->lock, flags);
188 ret = iwl_grab_nic_access(priv);
189 if (ret)
190 goto out;
191
192 iwl_write_direct32(priv, FH_KW_MEM_ADDR_REG,
193 priv->kw.dma_addr >> 4);
194 iwl_release_nic_access(priv);
195 out:
196 spin_unlock_irqrestore(&priv->lock, flags);
197 return ret;
198 }
199
200 int iwl_kw_alloc(struct iwl_priv *priv)
201 {
202 struct pci_dev *dev = priv->pci_dev;
203 struct iwl_kw *kw = &priv->kw;
204
205 kw->size = IWL_KW_SIZE;
206 kw->v_addr = pci_alloc_consistent(dev, kw->size, &kw->dma_addr);
207 if (!kw->v_addr)
208 return -ENOMEM;
209
210 return 0;
211 }
212
213 /**
214 * iwl_kw_free - Free the "keep warm" buffer
215 */
216 void iwl_kw_free(struct iwl_priv *priv)
217 {
218 struct pci_dev *dev = priv->pci_dev;
219 struct iwl_kw *kw = &priv->kw;
220
221 if (kw->v_addr) {
222 pci_free_consistent(dev, kw->size, kw->v_addr, kw->dma_addr);
223 memset(kw, 0, sizeof(*kw));
224 }
225 }
226
227 int iwl_hw_nic_init(struct iwl_priv *priv)
228 {
229 unsigned long flags;
230 struct iwl_rx_queue *rxq = &priv->rxq;
231 int ret;
232
233 /* nic_init */
234 spin_lock_irqsave(&priv->lock, flags);
235 priv->cfg->ops->lib->apm_ops.init(priv);
236 iwl_write32(priv, CSR_INT_COALESCING, 512 / 32);
237 spin_unlock_irqrestore(&priv->lock, flags);
238
239 ret = priv->cfg->ops->lib->apm_ops.set_pwr_src(priv, IWL_PWR_SRC_VMAIN);
240
241 priv->cfg->ops->lib->apm_ops.config(priv);
242
243 /* Allocate the RX queue, or reset if it is already allocated */
244 if (!rxq->bd) {
245 ret = iwl_rx_queue_alloc(priv);
246 if (ret) {
247 IWL_ERROR("Unable to initialize Rx queue\n");
248 return -ENOMEM;
249 }
250 } else
251 iwl_rx_queue_reset(priv, rxq);
252
253 iwl_rx_replenish(priv);
254
255 iwl_rx_init(priv, rxq);
256
257 spin_lock_irqsave(&priv->lock, flags);
258
259 rxq->need_update = 1;
260 iwl_rx_queue_update_write_ptr(priv, rxq);
261
262 spin_unlock_irqrestore(&priv->lock, flags);
263
264 /* Allocate and init all Tx and Command queues */
265 ret = iwl_txq_ctx_reset(priv);
266 if (ret)
267 return ret;
268
269 set_bit(STATUS_INIT, &priv->status);
270
271 return 0;
272 }
273 EXPORT_SYMBOL(iwl_hw_nic_init);
274
275 /**
276 * iwlcore_clear_stations_table - Clear the driver's station table
277 *
278 * NOTE: This does not clear or otherwise alter the device's station table.
279 */
280 void iwlcore_clear_stations_table(struct iwl_priv *priv)
281 {
282 unsigned long flags;
283
284 spin_lock_irqsave(&priv->sta_lock, flags);
285
286 priv->num_stations = 0;
287 memset(priv->stations, 0, sizeof(priv->stations));
288
289 spin_unlock_irqrestore(&priv->sta_lock, flags);
290 }
291 EXPORT_SYMBOL(iwlcore_clear_stations_table);
292
293 void iwl_reset_qos(struct iwl_priv *priv)
294 {
295 u16 cw_min = 15;
296 u16 cw_max = 1023;
297 u8 aifs = 2;
298 u8 is_legacy = 0;
299 unsigned long flags;
300 int i;
301
302 spin_lock_irqsave(&priv->lock, flags);
303 priv->qos_data.qos_active = 0;
304
305 if (priv->iw_mode == IEEE80211_IF_TYPE_IBSS) {
306 if (priv->qos_data.qos_enable)
307 priv->qos_data.qos_active = 1;
308 if (!(priv->active_rate & 0xfff0)) {
309 cw_min = 31;
310 is_legacy = 1;
311 }
312 } else if (priv->iw_mode == IEEE80211_IF_TYPE_AP) {
313 if (priv->qos_data.qos_enable)
314 priv->qos_data.qos_active = 1;
315 } else if (!(priv->staging_rxon.flags & RXON_FLG_SHORT_SLOT_MSK)) {
316 cw_min = 31;
317 is_legacy = 1;
318 }
319
320 if (priv->qos_data.qos_active)
321 aifs = 3;
322
323 priv->qos_data.def_qos_parm.ac[0].cw_min = cpu_to_le16(cw_min);
324 priv->qos_data.def_qos_parm.ac[0].cw_max = cpu_to_le16(cw_max);
325 priv->qos_data.def_qos_parm.ac[0].aifsn = aifs;
326 priv->qos_data.def_qos_parm.ac[0].edca_txop = 0;
327 priv->qos_data.def_qos_parm.ac[0].reserved1 = 0;
328
329 if (priv->qos_data.qos_active) {
330 i = 1;
331 priv->qos_data.def_qos_parm.ac[i].cw_min = cpu_to_le16(cw_min);
332 priv->qos_data.def_qos_parm.ac[i].cw_max = cpu_to_le16(cw_max);
333 priv->qos_data.def_qos_parm.ac[i].aifsn = 7;
334 priv->qos_data.def_qos_parm.ac[i].edca_txop = 0;
335 priv->qos_data.def_qos_parm.ac[i].reserved1 = 0;
336
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_max);
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 i = 3;
352 priv->qos_data.def_qos_parm.ac[i].cw_min =
353 cpu_to_le16((cw_min + 1) / 4 - 1);
354 priv->qos_data.def_qos_parm.ac[i].cw_max =
355 cpu_to_le16((cw_max + 1) / 2 - 1);
356 priv->qos_data.def_qos_parm.ac[i].aifsn = 2;
357 priv->qos_data.def_qos_parm.ac[i].reserved1 = 0;
358 if (is_legacy)
359 priv->qos_data.def_qos_parm.ac[i].edca_txop =
360 cpu_to_le16(3264);
361 else
362 priv->qos_data.def_qos_parm.ac[i].edca_txop =
363 cpu_to_le16(1504);
364 } else {
365 for (i = 1; i < 4; i++) {
366 priv->qos_data.def_qos_parm.ac[i].cw_min =
367 cpu_to_le16(cw_min);
368 priv->qos_data.def_qos_parm.ac[i].cw_max =
369 cpu_to_le16(cw_max);
370 priv->qos_data.def_qos_parm.ac[i].aifsn = aifs;
371 priv->qos_data.def_qos_parm.ac[i].edca_txop = 0;
372 priv->qos_data.def_qos_parm.ac[i].reserved1 = 0;
373 }
374 }
375 IWL_DEBUG_QOS("set QoS to default \n");
376
377 spin_unlock_irqrestore(&priv->lock, flags);
378 }
379 EXPORT_SYMBOL(iwl_reset_qos);
380
381 #define MAX_BIT_RATE_40_MHZ 0x96; /* 150 Mbps */
382 #define MAX_BIT_RATE_20_MHZ 0x48; /* 72 Mbps */
383 static void iwlcore_init_ht_hw_capab(const struct iwl_priv *priv,
384 struct ieee80211_ht_info *ht_info,
385 enum ieee80211_band band)
386 {
387 u16 max_bit_rate = 0;
388 u8 rx_chains_num = priv->hw_params.rx_chains_num;
389 u8 tx_chains_num = priv->hw_params.tx_chains_num;
390
391 ht_info->cap = 0;
392 memset(ht_info->supp_mcs_set, 0, 16);
393
394 ht_info->ht_supported = 1;
395
396 ht_info->cap |= (u16)IEEE80211_HT_CAP_GRN_FLD;
397 ht_info->cap |= (u16)IEEE80211_HT_CAP_SGI_20;
398 ht_info->cap |= (u16)(IEEE80211_HT_CAP_MIMO_PS &
399 (IWL_MIMO_PS_NONE << 2));
400
401 max_bit_rate = MAX_BIT_RATE_20_MHZ;
402 if (priv->hw_params.fat_channel & BIT(band)) {
403 ht_info->cap |= (u16)IEEE80211_HT_CAP_SUP_WIDTH;
404 ht_info->cap |= (u16)IEEE80211_HT_CAP_SGI_40;
405 ht_info->supp_mcs_set[4] = 0x01;
406 max_bit_rate = MAX_BIT_RATE_40_MHZ;
407 }
408
409 if (priv->cfg->mod_params->amsdu_size_8K)
410 ht_info->cap |= (u16)IEEE80211_HT_CAP_MAX_AMSDU;
411
412 ht_info->ampdu_factor = CFG_HT_RX_AMPDU_FACTOR_DEF;
413 ht_info->ampdu_density = CFG_HT_MPDU_DENSITY_DEF;
414
415 ht_info->supp_mcs_set[0] = 0xFF;
416 if (rx_chains_num >= 2)
417 ht_info->supp_mcs_set[1] = 0xFF;
418 if (rx_chains_num >= 3)
419 ht_info->supp_mcs_set[2] = 0xFF;
420
421 /* Highest supported Rx data rate */
422 max_bit_rate *= rx_chains_num;
423 ht_info->supp_mcs_set[10] = (u8)(max_bit_rate & 0x00FF);
424 ht_info->supp_mcs_set[11] = (u8)((max_bit_rate & 0xFF00) >> 8);
425
426 /* Tx MCS capabilities */
427 ht_info->supp_mcs_set[12] = IEEE80211_HT_CAP_MCS_TX_DEFINED;
428 if (tx_chains_num != rx_chains_num) {
429 ht_info->supp_mcs_set[12] |= IEEE80211_HT_CAP_MCS_TX_RX_DIFF;
430 ht_info->supp_mcs_set[12] |= ((tx_chains_num - 1) << 2);
431 }
432 }
433
434 static void iwlcore_init_hw_rates(struct iwl_priv *priv,
435 struct ieee80211_rate *rates)
436 {
437 int i;
438
439 for (i = 0; i < IWL_RATE_COUNT; i++) {
440 rates[i].bitrate = iwl_rates[i].ieee * 5;
441 rates[i].hw_value = i; /* Rate scaling will work on indexes */
442 rates[i].hw_value_short = i;
443 rates[i].flags = 0;
444 if ((i > IWL_LAST_OFDM_RATE) || (i < IWL_FIRST_OFDM_RATE)) {
445 /*
446 * If CCK != 1M then set short preamble rate flag.
447 */
448 rates[i].flags |=
449 (iwl_rates[i].plcp == IWL_RATE_1M_PLCP) ?
450 0 : IEEE80211_RATE_SHORT_PREAMBLE;
451 }
452 }
453 }
454
455 /**
456 * iwlcore_init_geos - Initialize mac80211's geo/channel info based from eeprom
457 */
458 static int iwlcore_init_geos(struct iwl_priv *priv)
459 {
460 struct iwl_channel_info *ch;
461 struct ieee80211_supported_band *sband;
462 struct ieee80211_channel *channels;
463 struct ieee80211_channel *geo_ch;
464 struct ieee80211_rate *rates;
465 int i = 0;
466
467 if (priv->bands[IEEE80211_BAND_2GHZ].n_bitrates ||
468 priv->bands[IEEE80211_BAND_5GHZ].n_bitrates) {
469 IWL_DEBUG_INFO("Geography modes already initialized.\n");
470 set_bit(STATUS_GEO_CONFIGURED, &priv->status);
471 return 0;
472 }
473
474 channels = kzalloc(sizeof(struct ieee80211_channel) *
475 priv->channel_count, GFP_KERNEL);
476 if (!channels)
477 return -ENOMEM;
478
479 rates = kzalloc((sizeof(struct ieee80211_rate) * (IWL_RATE_COUNT + 1)),
480 GFP_KERNEL);
481 if (!rates) {
482 kfree(channels);
483 return -ENOMEM;
484 }
485
486 /* 5.2GHz channels start after the 2.4GHz channels */
487 sband = &priv->bands[IEEE80211_BAND_5GHZ];
488 sband->channels = &channels[ARRAY_SIZE(iwl_eeprom_band_1)];
489 /* just OFDM */
490 sband->bitrates = &rates[IWL_FIRST_OFDM_RATE];
491 sband->n_bitrates = IWL_RATE_COUNT - IWL_FIRST_OFDM_RATE;
492
493 iwlcore_init_ht_hw_capab(priv, &sband->ht_info, IEEE80211_BAND_5GHZ);
494
495 sband = &priv->bands[IEEE80211_BAND_2GHZ];
496 sband->channels = channels;
497 /* OFDM & CCK */
498 sband->bitrates = rates;
499 sband->n_bitrates = IWL_RATE_COUNT;
500
501 iwlcore_init_ht_hw_capab(priv, &sband->ht_info, IEEE80211_BAND_2GHZ);
502
503 priv->ieee_channels = channels;
504 priv->ieee_rates = rates;
505
506 iwlcore_init_hw_rates(priv, rates);
507
508 for (i = 0; i < priv->channel_count; i++) {
509 ch = &priv->channel_info[i];
510
511 /* FIXME: might be removed if scan is OK */
512 if (!is_channel_valid(ch))
513 continue;
514
515 if (is_channel_a_band(ch))
516 sband = &priv->bands[IEEE80211_BAND_5GHZ];
517 else
518 sband = &priv->bands[IEEE80211_BAND_2GHZ];
519
520 geo_ch = &sband->channels[sband->n_channels++];
521
522 geo_ch->center_freq =
523 ieee80211_channel_to_frequency(ch->channel);
524 geo_ch->max_power = ch->max_power_avg;
525 geo_ch->max_antenna_gain = 0xff;
526 geo_ch->hw_value = ch->channel;
527
528 if (is_channel_valid(ch)) {
529 if (!(ch->flags & EEPROM_CHANNEL_IBSS))
530 geo_ch->flags |= IEEE80211_CHAN_NO_IBSS;
531
532 if (!(ch->flags & EEPROM_CHANNEL_ACTIVE))
533 geo_ch->flags |= IEEE80211_CHAN_PASSIVE_SCAN;
534
535 if (ch->flags & EEPROM_CHANNEL_RADAR)
536 geo_ch->flags |= IEEE80211_CHAN_RADAR;
537
538 geo_ch->flags |= ch->fat_extension_channel;
539
540 if (ch->max_power_avg > priv->tx_power_channel_lmt)
541 priv->tx_power_channel_lmt = ch->max_power_avg;
542 } else {
543 geo_ch->flags |= IEEE80211_CHAN_DISABLED;
544 }
545
546 /* Save flags for reg domain usage */
547 geo_ch->orig_flags = geo_ch->flags;
548
549 IWL_DEBUG_INFO("Channel %d Freq=%d[%sGHz] %s flag=0x%X\n",
550 ch->channel, geo_ch->center_freq,
551 is_channel_a_band(ch) ? "5.2" : "2.4",
552 geo_ch->flags & IEEE80211_CHAN_DISABLED ?
553 "restricted" : "valid",
554 geo_ch->flags);
555 }
556
557 if ((priv->bands[IEEE80211_BAND_5GHZ].n_channels == 0) &&
558 priv->cfg->sku & IWL_SKU_A) {
559 printk(KERN_INFO DRV_NAME
560 ": Incorrectly detected BG card as ABG. Please send "
561 "your PCI ID 0x%04X:0x%04X to maintainer.\n",
562 priv->pci_dev->device, priv->pci_dev->subsystem_device);
563 priv->cfg->sku &= ~IWL_SKU_A;
564 }
565
566 printk(KERN_INFO DRV_NAME
567 ": Tunable channels: %d 802.11bg, %d 802.11a channels\n",
568 priv->bands[IEEE80211_BAND_2GHZ].n_channels,
569 priv->bands[IEEE80211_BAND_5GHZ].n_channels);
570
571
572 set_bit(STATUS_GEO_CONFIGURED, &priv->status);
573
574 return 0;
575 }
576
577 /*
578 * iwlcore_free_geos - undo allocations in iwlcore_init_geos
579 */
580 static void iwlcore_free_geos(struct iwl_priv *priv)
581 {
582 kfree(priv->ieee_channels);
583 kfree(priv->ieee_rates);
584 clear_bit(STATUS_GEO_CONFIGURED, &priv->status);
585 }
586
587 static u8 is_single_rx_stream(struct iwl_priv *priv)
588 {
589 return !priv->current_ht_config.is_ht ||
590 ((priv->current_ht_config.supp_mcs_set[1] == 0) &&
591 (priv->current_ht_config.supp_mcs_set[2] == 0)) ||
592 priv->ps_mode == IWL_MIMO_PS_STATIC;
593 }
594
595 static u8 iwl_is_channel_extension(struct iwl_priv *priv,
596 enum ieee80211_band band,
597 u16 channel, u8 extension_chan_offset)
598 {
599 const struct iwl_channel_info *ch_info;
600
601 ch_info = iwl_get_channel_info(priv, band, channel);
602 if (!is_channel_valid(ch_info))
603 return 0;
604
605 if (extension_chan_offset == IEEE80211_HT_IE_CHA_SEC_ABOVE)
606 return !(ch_info->fat_extension_channel &
607 IEEE80211_CHAN_NO_FAT_ABOVE);
608 else if (extension_chan_offset == IEEE80211_HT_IE_CHA_SEC_BELOW)
609 return !(ch_info->fat_extension_channel &
610 IEEE80211_CHAN_NO_FAT_BELOW);
611
612 return 0;
613 }
614
615 u8 iwl_is_fat_tx_allowed(struct iwl_priv *priv,
616 struct ieee80211_ht_info *sta_ht_inf)
617 {
618 struct iwl_ht_info *iwl_ht_conf = &priv->current_ht_config;
619
620 if ((!iwl_ht_conf->is_ht) ||
621 (iwl_ht_conf->supported_chan_width != IWL_CHANNEL_WIDTH_40MHZ) ||
622 (iwl_ht_conf->extension_chan_offset == IEEE80211_HT_IE_CHA_SEC_NONE))
623 return 0;
624
625 if (sta_ht_inf) {
626 if ((!sta_ht_inf->ht_supported) ||
627 (!(sta_ht_inf->cap & IEEE80211_HT_CAP_SUP_WIDTH)))
628 return 0;
629 }
630
631 return iwl_is_channel_extension(priv, priv->band,
632 iwl_ht_conf->control_channel,
633 iwl_ht_conf->extension_chan_offset);
634 }
635 EXPORT_SYMBOL(iwl_is_fat_tx_allowed);
636
637 void iwl_set_rxon_ht(struct iwl_priv *priv, struct iwl_ht_info *ht_info)
638 {
639 struct iwl_rxon_cmd *rxon = &priv->staging_rxon;
640 u32 val;
641
642 if (!ht_info->is_ht)
643 return;
644
645 /* Set up channel bandwidth: 20 MHz only, or 20/40 mixed if fat ok */
646 if (iwl_is_fat_tx_allowed(priv, NULL))
647 rxon->flags |= RXON_FLG_CHANNEL_MODE_MIXED_MSK;
648 else
649 rxon->flags &= ~(RXON_FLG_CHANNEL_MODE_MIXED_MSK |
650 RXON_FLG_CHANNEL_MODE_PURE_40_MSK);
651
652 if (le16_to_cpu(rxon->channel) != ht_info->control_channel) {
653 IWL_DEBUG_ASSOC("control diff than current %d %d\n",
654 le16_to_cpu(rxon->channel),
655 ht_info->control_channel);
656 return;
657 }
658
659 /* Note: control channel is opposite of extension channel */
660 switch (ht_info->extension_chan_offset) {
661 case IEEE80211_HT_IE_CHA_SEC_ABOVE:
662 rxon->flags &= ~(RXON_FLG_CTRL_CHANNEL_LOC_HI_MSK);
663 break;
664 case IEEE80211_HT_IE_CHA_SEC_BELOW:
665 rxon->flags |= RXON_FLG_CTRL_CHANNEL_LOC_HI_MSK;
666 break;
667 case IEEE80211_HT_IE_CHA_SEC_NONE:
668 default:
669 rxon->flags &= ~RXON_FLG_CHANNEL_MODE_MIXED_MSK;
670 break;
671 }
672
673 val = ht_info->ht_protection;
674
675 rxon->flags |= cpu_to_le32(val << RXON_FLG_HT_OPERATING_MODE_POS);
676
677 iwl_set_rxon_chain(priv);
678
679 IWL_DEBUG_ASSOC("supported HT rate 0x%X 0x%X 0x%X "
680 "rxon flags 0x%X operation mode :0x%X "
681 "extension channel offset 0x%x "
682 "control chan %d\n",
683 ht_info->supp_mcs_set[0],
684 ht_info->supp_mcs_set[1],
685 ht_info->supp_mcs_set[2],
686 le32_to_cpu(rxon->flags), ht_info->ht_protection,
687 ht_info->extension_chan_offset,
688 ht_info->control_channel);
689 return;
690 }
691 EXPORT_SYMBOL(iwl_set_rxon_ht);
692
693 /*
694 * Determine how many receiver/antenna chains to use.
695 * More provides better reception via diversity. Fewer saves power.
696 * MIMO (dual stream) requires at least 2, but works better with 3.
697 * This does not determine *which* chains to use, just how many.
698 */
699 static int iwlcore_get_rx_chain_counter(struct iwl_priv *priv,
700 u8 *idle_state, u8 *rx_state)
701 {
702 u8 is_single = is_single_rx_stream(priv);
703 u8 is_cam = test_bit(STATUS_POWER_PMI, &priv->status) ? 0 : 1;
704
705 /* # of Rx chains to use when expecting MIMO. */
706 if (is_single || (!is_cam && (priv->ps_mode == IWL_MIMO_PS_STATIC)))
707 *rx_state = 2;
708 else
709 *rx_state = 3;
710
711 /* # Rx chains when idling and maybe trying to save power */
712 switch (priv->ps_mode) {
713 case IWL_MIMO_PS_STATIC:
714 case IWL_MIMO_PS_DYNAMIC:
715 *idle_state = (is_cam) ? 2 : 1;
716 break;
717 case IWL_MIMO_PS_NONE:
718 *idle_state = (is_cam) ? *rx_state : 1;
719 break;
720 default:
721 *idle_state = 1;
722 break;
723 }
724
725 return 0;
726 }
727
728 /**
729 * iwl_set_rxon_chain - Set up Rx chain usage in "staging" RXON image
730 *
731 * Selects how many and which Rx receivers/antennas/chains to use.
732 * This should not be used for scan command ... it puts data in wrong place.
733 */
734 void iwl_set_rxon_chain(struct iwl_priv *priv)
735 {
736 u8 is_single = is_single_rx_stream(priv);
737 u8 idle_state, rx_state;
738
739 priv->staging_rxon.rx_chain = 0;
740 rx_state = idle_state = 3;
741
742 /* Tell uCode which antennas are actually connected.
743 * Before first association, we assume all antennas are connected.
744 * Just after first association, iwl_chain_noise_calibration()
745 * checks which antennas actually *are* connected. */
746 priv->staging_rxon.rx_chain |=
747 cpu_to_le16(priv->hw_params.valid_rx_ant <<
748 RXON_RX_CHAIN_VALID_POS);
749
750 /* How many receivers should we use? */
751 iwlcore_get_rx_chain_counter(priv, &idle_state, &rx_state);
752 priv->staging_rxon.rx_chain |=
753 cpu_to_le16(rx_state << RXON_RX_CHAIN_MIMO_CNT_POS);
754 priv->staging_rxon.rx_chain |=
755 cpu_to_le16(idle_state << RXON_RX_CHAIN_CNT_POS);
756
757 if (!is_single && (rx_state >= 2) &&
758 !test_bit(STATUS_POWER_PMI, &priv->status))
759 priv->staging_rxon.rx_chain |= RXON_RX_CHAIN_MIMO_FORCE_MSK;
760 else
761 priv->staging_rxon.rx_chain &= ~RXON_RX_CHAIN_MIMO_FORCE_MSK;
762
763 IWL_DEBUG_ASSOC("rx chain %X\n", priv->staging_rxon.rx_chain);
764 }
765 EXPORT_SYMBOL(iwl_set_rxon_chain);
766
767 /**
768 * iwlcore_set_rxon_channel - Set the phymode and channel values in staging RXON
769 * @phymode: MODE_IEEE80211A sets to 5.2GHz; all else set to 2.4GHz
770 * @channel: Any channel valid for the requested phymode
771
772 * In addition to setting the staging RXON, priv->phymode is also set.
773 *
774 * NOTE: Does not commit to the hardware; it sets appropriate bit fields
775 * in the staging RXON flag structure based on the phymode
776 */
777 int iwl_set_rxon_channel(struct iwl_priv *priv,
778 enum ieee80211_band band,
779 u16 channel)
780 {
781 if (!iwl_get_channel_info(priv, band, channel)) {
782 IWL_DEBUG_INFO("Could not set channel to %d [%d]\n",
783 channel, band);
784 return -EINVAL;
785 }
786
787 if ((le16_to_cpu(priv->staging_rxon.channel) == channel) &&
788 (priv->band == band))
789 return 0;
790
791 priv->staging_rxon.channel = cpu_to_le16(channel);
792 if (band == IEEE80211_BAND_5GHZ)
793 priv->staging_rxon.flags &= ~RXON_FLG_BAND_24G_MSK;
794 else
795 priv->staging_rxon.flags |= RXON_FLG_BAND_24G_MSK;
796
797 priv->band = band;
798
799 IWL_DEBUG_INFO("Staging channel set to %d [%d]\n", channel, band);
800
801 return 0;
802 }
803 EXPORT_SYMBOL(iwl_set_rxon_channel);
804
805 int iwl_setup_mac(struct iwl_priv *priv)
806 {
807 int ret;
808 struct ieee80211_hw *hw = priv->hw;
809 hw->rate_control_algorithm = "iwl-4965-rs";
810
811 /* Tell mac80211 our characteristics */
812 hw->flags = IEEE80211_HW_HOST_GEN_BEACON_TEMPLATE |
813 IEEE80211_HW_SIGNAL_DBM |
814 IEEE80211_HW_NOISE_DBM;
815 /* Default value; 4 EDCA QOS priorities */
816 hw->queues = 4;
817 /* Enhanced value; more queues, to support 11n aggregation */
818 hw->ampdu_queues = 12;
819
820 hw->conf.beacon_int = 100;
821
822 if (priv->bands[IEEE80211_BAND_2GHZ].n_channels)
823 priv->hw->wiphy->bands[IEEE80211_BAND_2GHZ] =
824 &priv->bands[IEEE80211_BAND_2GHZ];
825 if (priv->bands[IEEE80211_BAND_5GHZ].n_channels)
826 priv->hw->wiphy->bands[IEEE80211_BAND_5GHZ] =
827 &priv->bands[IEEE80211_BAND_5GHZ];
828
829 ret = ieee80211_register_hw(priv->hw);
830 if (ret) {
831 IWL_ERROR("Failed to register hw (error %d)\n", ret);
832 return ret;
833 }
834 priv->mac80211_registered = 1;
835
836 return 0;
837 }
838 EXPORT_SYMBOL(iwl_setup_mac);
839
840
841 int iwl_init_drv(struct iwl_priv *priv)
842 {
843 int ret;
844 int i;
845
846 priv->retry_rate = 1;
847 priv->ibss_beacon = NULL;
848
849 spin_lock_init(&priv->lock);
850 spin_lock_init(&priv->power_data.lock);
851 spin_lock_init(&priv->sta_lock);
852 spin_lock_init(&priv->hcmd_lock);
853 spin_lock_init(&priv->lq_mngr.lock);
854
855 for (i = 0; i < IWL_IBSS_MAC_HASH_SIZE; i++)
856 INIT_LIST_HEAD(&priv->ibss_mac_hash[i]);
857
858 INIT_LIST_HEAD(&priv->free_frames);
859
860 mutex_init(&priv->mutex);
861
862 /* Clear the driver's (not device's) station table */
863 iwlcore_clear_stations_table(priv);
864
865 priv->data_retry_limit = -1;
866 priv->ieee_channels = NULL;
867 priv->ieee_rates = NULL;
868 priv->band = IEEE80211_BAND_2GHZ;
869
870 priv->iw_mode = IEEE80211_IF_TYPE_STA;
871
872 priv->use_ant_b_for_management_frame = 1; /* start with ant B */
873 priv->ps_mode = IWL_MIMO_PS_NONE;
874
875 /* Choose which receivers/antennas to use */
876 iwl_set_rxon_chain(priv);
877 iwl_init_scan_params(priv);
878
879 if (priv->cfg->mod_params->enable_qos)
880 priv->qos_data.qos_enable = 1;
881
882 iwl_reset_qos(priv);
883
884 priv->qos_data.qos_active = 0;
885 priv->qos_data.qos_cap.val = 0;
886
887 iwl_set_rxon_channel(priv, IEEE80211_BAND_2GHZ, 6);
888
889 priv->rates_mask = IWL_RATES_MASK;
890 /* If power management is turned on, default to AC mode */
891 priv->power_mode = IWL_POWER_AC;
892 priv->tx_power_user_lmt = IWL_TX_POWER_TARGET_POWER_MAX;
893
894 ret = iwl_init_channel_map(priv);
895 if (ret) {
896 IWL_ERROR("initializing regulatory failed: %d\n", ret);
897 goto err;
898 }
899
900 ret = iwlcore_init_geos(priv);
901 if (ret) {
902 IWL_ERROR("initializing geos failed: %d\n", ret);
903 goto err_free_channel_map;
904 }
905
906 return 0;
907
908 err_free_channel_map:
909 iwl_free_channel_map(priv);
910 err:
911 return ret;
912 }
913 EXPORT_SYMBOL(iwl_init_drv);
914
915 void iwl_free_calib_results(struct iwl_priv *priv)
916 {
917 kfree(priv->calib_results.lo_res);
918 priv->calib_results.lo_res = NULL;
919 priv->calib_results.lo_res_len = 0;
920
921 kfree(priv->calib_results.tx_iq_res);
922 priv->calib_results.tx_iq_res = NULL;
923 priv->calib_results.tx_iq_res_len = 0;
924
925 kfree(priv->calib_results.tx_iq_perd_res);
926 priv->calib_results.tx_iq_perd_res = NULL;
927 priv->calib_results.tx_iq_perd_res_len = 0;
928 }
929 EXPORT_SYMBOL(iwl_free_calib_results);
930
931 int iwl_set_tx_power(struct iwl_priv *priv, s8 tx_power, bool force)
932 {
933 int ret = 0;
934 if (tx_power < IWL_TX_POWER_TARGET_POWER_MIN) {
935 IWL_WARNING("Requested user TXPOWER %d below limit.\n",
936 priv->tx_power_user_lmt);
937 return -EINVAL;
938 }
939
940 if (tx_power > IWL_TX_POWER_TARGET_POWER_MAX) {
941 IWL_WARNING("Requested user TXPOWER %d above limit.\n",
942 priv->tx_power_user_lmt);
943 return -EINVAL;
944 }
945
946 if (priv->tx_power_user_lmt != tx_power)
947 force = true;
948
949 priv->tx_power_user_lmt = tx_power;
950
951 if (force && priv->cfg->ops->lib->send_tx_power)
952 ret = priv->cfg->ops->lib->send_tx_power(priv);
953
954 return ret;
955 }
956 EXPORT_SYMBOL(iwl_set_tx_power);
957
958
959 void iwl_uninit_drv(struct iwl_priv *priv)
960 {
961 iwl_free_calib_results(priv);
962 iwlcore_free_geos(priv);
963 iwl_free_channel_map(priv);
964 kfree(priv->scan);
965 }
966 EXPORT_SYMBOL(iwl_uninit_drv);
967
968 int iwl_send_statistics_request(struct iwl_priv *priv, u8 flags)
969 {
970 u32 stat_flags = 0;
971 struct iwl_host_cmd cmd = {
972 .id = REPLY_STATISTICS_CMD,
973 .meta.flags = flags,
974 .len = sizeof(stat_flags),
975 .data = (u8 *) &stat_flags,
976 };
977 return iwl_send_cmd(priv, &cmd);
978 }
979 EXPORT_SYMBOL(iwl_send_statistics_request);
980
981 /**
982 * iwl_verify_inst_sparse - verify runtime uCode image in card vs. host,
983 * using sample data 100 bytes apart. If these sample points are good,
984 * it's a pretty good bet that everything between them is good, too.
985 */
986 static int iwlcore_verify_inst_sparse(struct iwl_priv *priv, __le32 *image, u32 len)
987 {
988 u32 val;
989 int ret = 0;
990 u32 errcnt = 0;
991 u32 i;
992
993 IWL_DEBUG_INFO("ucode inst image size is %u\n", len);
994
995 ret = iwl_grab_nic_access(priv);
996 if (ret)
997 return ret;
998
999 for (i = 0; i < len; i += 100, image += 100/sizeof(u32)) {
1000 /* read data comes through single port, auto-incr addr */
1001 /* NOTE: Use the debugless read so we don't flood kernel log
1002 * if IWL_DL_IO is set */
1003 iwl_write_direct32(priv, HBUS_TARG_MEM_RADDR,
1004 i + RTC_INST_LOWER_BOUND);
1005 val = _iwl_read_direct32(priv, HBUS_TARG_MEM_RDAT);
1006 if (val != le32_to_cpu(*image)) {
1007 ret = -EIO;
1008 errcnt++;
1009 if (errcnt >= 3)
1010 break;
1011 }
1012 }
1013
1014 iwl_release_nic_access(priv);
1015
1016 return ret;
1017 }
1018
1019 /**
1020 * iwlcore_verify_inst_full - verify runtime uCode image in card vs. host,
1021 * looking at all data.
1022 */
1023 static int iwl_verify_inst_full(struct iwl_priv *priv, __le32 *image,
1024 u32 len)
1025 {
1026 u32 val;
1027 u32 save_len = len;
1028 int ret = 0;
1029 u32 errcnt;
1030
1031 IWL_DEBUG_INFO("ucode inst image size is %u\n", len);
1032
1033 ret = iwl_grab_nic_access(priv);
1034 if (ret)
1035 return ret;
1036
1037 iwl_write_direct32(priv, HBUS_TARG_MEM_RADDR, RTC_INST_LOWER_BOUND);
1038
1039 errcnt = 0;
1040 for (; len > 0; len -= sizeof(u32), image++) {
1041 /* read data comes through single port, auto-incr addr */
1042 /* NOTE: Use the debugless read so we don't flood kernel log
1043 * if IWL_DL_IO is set */
1044 val = _iwl_read_direct32(priv, HBUS_TARG_MEM_RDAT);
1045 if (val != le32_to_cpu(*image)) {
1046 IWL_ERROR("uCode INST section is invalid at "
1047 "offset 0x%x, is 0x%x, s/b 0x%x\n",
1048 save_len - len, val, le32_to_cpu(*image));
1049 ret = -EIO;
1050 errcnt++;
1051 if (errcnt >= 20)
1052 break;
1053 }
1054 }
1055
1056 iwl_release_nic_access(priv);
1057
1058 if (!errcnt)
1059 IWL_DEBUG_INFO
1060 ("ucode image in INSTRUCTION memory is good\n");
1061
1062 return ret;
1063 }
1064
1065 /**
1066 * iwl_verify_ucode - determine which instruction image is in SRAM,
1067 * and verify its contents
1068 */
1069 int iwl_verify_ucode(struct iwl_priv *priv)
1070 {
1071 __le32 *image;
1072 u32 len;
1073 int ret;
1074
1075 /* Try bootstrap */
1076 image = (__le32 *)priv->ucode_boot.v_addr;
1077 len = priv->ucode_boot.len;
1078 ret = iwlcore_verify_inst_sparse(priv, image, len);
1079 if (!ret) {
1080 IWL_DEBUG_INFO("Bootstrap uCode is good in inst SRAM\n");
1081 return 0;
1082 }
1083
1084 /* Try initialize */
1085 image = (__le32 *)priv->ucode_init.v_addr;
1086 len = priv->ucode_init.len;
1087 ret = iwlcore_verify_inst_sparse(priv, image, len);
1088 if (!ret) {
1089 IWL_DEBUG_INFO("Initialize uCode is good in inst SRAM\n");
1090 return 0;
1091 }
1092
1093 /* Try runtime/protocol */
1094 image = (__le32 *)priv->ucode_code.v_addr;
1095 len = priv->ucode_code.len;
1096 ret = iwlcore_verify_inst_sparse(priv, image, len);
1097 if (!ret) {
1098 IWL_DEBUG_INFO("Runtime uCode is good in inst SRAM\n");
1099 return 0;
1100 }
1101
1102 IWL_ERROR("NO VALID UCODE IMAGE IN INSTRUCTION SRAM!!\n");
1103
1104 /* Since nothing seems to match, show first several data entries in
1105 * instruction SRAM, so maybe visual inspection will give a clue.
1106 * Selection of bootstrap image (vs. other images) is arbitrary. */
1107 image = (__le32 *)priv->ucode_boot.v_addr;
1108 len = priv->ucode_boot.len;
1109 ret = iwl_verify_inst_full(priv, image, len);
1110
1111 return ret;
1112 }
1113 EXPORT_SYMBOL(iwl_verify_ucode);
1114
1115
1116 static const char *desc_lookup(int i)
1117 {
1118 switch (i) {
1119 case 1:
1120 return "FAIL";
1121 case 2:
1122 return "BAD_PARAM";
1123 case 3:
1124 return "BAD_CHECKSUM";
1125 case 4:
1126 return "NMI_INTERRUPT";
1127 case 5:
1128 return "SYSASSERT";
1129 case 6:
1130 return "FATAL_ERROR";
1131 }
1132
1133 return "UNKNOWN";
1134 }
1135
1136 #define ERROR_START_OFFSET (1 * sizeof(u32))
1137 #define ERROR_ELEM_SIZE (7 * sizeof(u32))
1138
1139 void iwl_dump_nic_error_log(struct iwl_priv *priv)
1140 {
1141 u32 data2, line;
1142 u32 desc, time, count, base, data1;
1143 u32 blink1, blink2, ilink1, ilink2;
1144 int ret;
1145
1146 if (priv->ucode_type == UCODE_INIT)
1147 base = le32_to_cpu(priv->card_alive_init.error_event_table_ptr);
1148 else
1149 base = le32_to_cpu(priv->card_alive.error_event_table_ptr);
1150
1151 if (!priv->cfg->ops->lib->is_valid_rtc_data_addr(base)) {
1152 IWL_ERROR("Not valid error log pointer 0x%08X\n", base);
1153 return;
1154 }
1155
1156 ret = iwl_grab_nic_access(priv);
1157 if (ret) {
1158 IWL_WARNING("Can not read from adapter at this time.\n");
1159 return;
1160 }
1161
1162 count = iwl_read_targ_mem(priv, base);
1163
1164 if (ERROR_START_OFFSET <= count * ERROR_ELEM_SIZE) {
1165 IWL_ERROR("Start IWL Error Log Dump:\n");
1166 IWL_ERROR("Status: 0x%08lX, count: %d\n", priv->status, count);
1167 }
1168
1169 desc = iwl_read_targ_mem(priv, base + 1 * sizeof(u32));
1170 blink1 = iwl_read_targ_mem(priv, base + 3 * sizeof(u32));
1171 blink2 = iwl_read_targ_mem(priv, base + 4 * sizeof(u32));
1172 ilink1 = iwl_read_targ_mem(priv, base + 5 * sizeof(u32));
1173 ilink2 = iwl_read_targ_mem(priv, base + 6 * sizeof(u32));
1174 data1 = iwl_read_targ_mem(priv, base + 7 * sizeof(u32));
1175 data2 = iwl_read_targ_mem(priv, base + 8 * sizeof(u32));
1176 line = iwl_read_targ_mem(priv, base + 9 * sizeof(u32));
1177 time = iwl_read_targ_mem(priv, base + 11 * sizeof(u32));
1178
1179 IWL_ERROR("Desc Time "
1180 "data1 data2 line\n");
1181 IWL_ERROR("%-13s (#%d) %010u 0x%08X 0x%08X %u\n",
1182 desc_lookup(desc), desc, time, data1, data2, line);
1183 IWL_ERROR("blink1 blink2 ilink1 ilink2\n");
1184 IWL_ERROR("0x%05X 0x%05X 0x%05X 0x%05X\n", blink1, blink2,
1185 ilink1, ilink2);
1186
1187 iwl_release_nic_access(priv);
1188 }
1189 EXPORT_SYMBOL(iwl_dump_nic_error_log);
1190
1191 #define EVENT_START_OFFSET (4 * sizeof(u32))
1192
1193 /**
1194 * iwl_print_event_log - Dump error event log to syslog
1195 *
1196 * NOTE: Must be called with iwl4965_grab_nic_access() already obtained!
1197 */
1198 void iwl_print_event_log(struct iwl_priv *priv, u32 start_idx,
1199 u32 num_events, u32 mode)
1200 {
1201 u32 i;
1202 u32 base; /* SRAM byte address of event log header */
1203 u32 event_size; /* 2 u32s, or 3 u32s if timestamp recorded */
1204 u32 ptr; /* SRAM byte address of log data */
1205 u32 ev, time, data; /* event log data */
1206
1207 if (num_events == 0)
1208 return;
1209 if (priv->ucode_type == UCODE_INIT)
1210 base = le32_to_cpu(priv->card_alive_init.log_event_table_ptr);
1211 else
1212 base = le32_to_cpu(priv->card_alive.log_event_table_ptr);
1213
1214 if (mode == 0)
1215 event_size = 2 * sizeof(u32);
1216 else
1217 event_size = 3 * sizeof(u32);
1218
1219 ptr = base + EVENT_START_OFFSET + (start_idx * event_size);
1220
1221 /* "time" is actually "data" for mode 0 (no timestamp).
1222 * place event id # at far right for easier visual parsing. */
1223 for (i = 0; i < num_events; i++) {
1224 ev = iwl_read_targ_mem(priv, ptr);
1225 ptr += sizeof(u32);
1226 time = iwl_read_targ_mem(priv, ptr);
1227 ptr += sizeof(u32);
1228 if (mode == 0) {
1229 /* data, ev */
1230 IWL_ERROR("EVT_LOG:0x%08x:%04u\n", time, ev);
1231 } else {
1232 data = iwl_read_targ_mem(priv, ptr);
1233 ptr += sizeof(u32);
1234 IWL_ERROR("EVT_LOGT:%010u:0x%08x:%04u\n",
1235 time, data, ev);
1236 }
1237 }
1238 }
1239 EXPORT_SYMBOL(iwl_print_event_log);
1240
1241
1242 void iwl_dump_nic_event_log(struct iwl_priv *priv)
1243 {
1244 int ret;
1245 u32 base; /* SRAM byte address of event log header */
1246 u32 capacity; /* event log capacity in # entries */
1247 u32 mode; /* 0 - no timestamp, 1 - timestamp recorded */
1248 u32 num_wraps; /* # times uCode wrapped to top of log */
1249 u32 next_entry; /* index of next entry to be written by uCode */
1250 u32 size; /* # entries that we'll print */
1251
1252 if (priv->ucode_type == UCODE_INIT)
1253 base = le32_to_cpu(priv->card_alive_init.log_event_table_ptr);
1254 else
1255 base = le32_to_cpu(priv->card_alive.log_event_table_ptr);
1256
1257 if (!priv->cfg->ops->lib->is_valid_rtc_data_addr(base)) {
1258 IWL_ERROR("Invalid event log pointer 0x%08X\n", base);
1259 return;
1260 }
1261
1262 ret = iwl_grab_nic_access(priv);
1263 if (ret) {
1264 IWL_WARNING("Can not read from adapter at this time.\n");
1265 return;
1266 }
1267
1268 /* event log header */
1269 capacity = iwl_read_targ_mem(priv, base);
1270 mode = iwl_read_targ_mem(priv, base + (1 * sizeof(u32)));
1271 num_wraps = iwl_read_targ_mem(priv, base + (2 * sizeof(u32)));
1272 next_entry = iwl_read_targ_mem(priv, base + (3 * sizeof(u32)));
1273
1274 size = num_wraps ? capacity : next_entry;
1275
1276 /* bail out if nothing in log */
1277 if (size == 0) {
1278 IWL_ERROR("Start IWL Event Log Dump: nothing in log\n");
1279 iwl_release_nic_access(priv);
1280 return;
1281 }
1282
1283 IWL_ERROR("Start IWL Event Log Dump: display count %d, wraps %d\n",
1284 size, num_wraps);
1285
1286 /* if uCode has wrapped back to top of log, start at the oldest entry,
1287 * i.e the next one that uCode would fill. */
1288 if (num_wraps)
1289 iwl_print_event_log(priv, next_entry,
1290 capacity - next_entry, mode);
1291 /* (then/else) start at top of log */
1292 iwl_print_event_log(priv, 0, next_entry, mode);
1293
1294 iwl_release_nic_access(priv);
1295 }
1296 EXPORT_SYMBOL(iwl_dump_nic_event_log);
1297
1298 void iwl_rf_kill_ct_config(struct iwl_priv *priv)
1299 {
1300 struct iwl_ct_kill_config cmd;
1301 unsigned long flags;
1302 int ret = 0;
1303
1304 spin_lock_irqsave(&priv->lock, flags);
1305 iwl_write32(priv, CSR_UCODE_DRV_GP1_CLR,
1306 CSR_UCODE_DRV_GP1_REG_BIT_CT_KILL_EXIT);
1307 spin_unlock_irqrestore(&priv->lock, flags);
1308
1309 cmd.critical_temperature_R =
1310 cpu_to_le32(priv->hw_params.ct_kill_threshold);
1311
1312 ret = iwl_send_cmd_pdu(priv, REPLY_CT_KILL_CONFIG_CMD,
1313 sizeof(cmd), &cmd);
1314 if (ret)
1315 IWL_ERROR("REPLY_CT_KILL_CONFIG_CMD failed\n");
1316 else
1317 IWL_DEBUG_INFO("REPLY_CT_KILL_CONFIG_CMD succeeded, "
1318 "critical temperature is %d\n",
1319 cmd.critical_temperature_R);
1320 }
1321 EXPORT_SYMBOL(iwl_rf_kill_ct_config);
1322
1323 /*
1324 * CARD_STATE_CMD
1325 *
1326 * Use: Sets the device's internal card state to enable, disable, or halt
1327 *
1328 * When in the 'enable' state the card operates as normal.
1329 * When in the 'disable' state, the card enters into a low power mode.
1330 * When in the 'halt' state, the card is shut down and must be fully
1331 * restarted to come back on.
1332 */
1333 static int iwl_send_card_state(struct iwl_priv *priv, u32 flags, u8 meta_flag)
1334 {
1335 struct iwl_host_cmd cmd = {
1336 .id = REPLY_CARD_STATE_CMD,
1337 .len = sizeof(u32),
1338 .data = &flags,
1339 .meta.flags = meta_flag,
1340 };
1341
1342 return iwl_send_cmd(priv, &cmd);
1343 }
1344
1345 void iwl_radio_kill_sw_disable_radio(struct iwl_priv *priv)
1346 {
1347 unsigned long flags;
1348
1349 if (test_bit(STATUS_RF_KILL_SW, &priv->status))
1350 return;
1351
1352 IWL_DEBUG_RF_KILL("Manual SW RF KILL set to: RADIO OFF\n");
1353
1354 iwl_scan_cancel(priv);
1355 /* FIXME: This is a workaround for AP */
1356 if (priv->iw_mode != IEEE80211_IF_TYPE_AP) {
1357 spin_lock_irqsave(&priv->lock, flags);
1358 iwl_write32(priv, CSR_UCODE_DRV_GP1_SET,
1359 CSR_UCODE_SW_BIT_RFKILL);
1360 spin_unlock_irqrestore(&priv->lock, flags);
1361 /* call the host command only if no hw rf-kill set */
1362 if (!test_bit(STATUS_RF_KILL_HW, &priv->status) &&
1363 iwl_is_ready(priv))
1364 iwl_send_card_state(priv,
1365 CARD_STATE_CMD_DISABLE, 0);
1366 set_bit(STATUS_RF_KILL_SW, &priv->status);
1367 /* make sure mac80211 stop sending Tx frame */
1368 if (priv->mac80211_registered)
1369 ieee80211_stop_queues(priv->hw);
1370 }
1371 }
1372 EXPORT_SYMBOL(iwl_radio_kill_sw_disable_radio);
1373
1374 int iwl_radio_kill_sw_enable_radio(struct iwl_priv *priv)
1375 {
1376 unsigned long flags;
1377
1378 if (!test_bit(STATUS_RF_KILL_SW, &priv->status))
1379 return 0;
1380
1381 IWL_DEBUG_RF_KILL("Manual SW RF KILL set to: RADIO ON\n");
1382
1383 spin_lock_irqsave(&priv->lock, flags);
1384 iwl_write32(priv, CSR_UCODE_DRV_GP1_CLR, CSR_UCODE_SW_BIT_RFKILL);
1385
1386 clear_bit(STATUS_RF_KILL_SW, &priv->status);
1387 spin_unlock_irqrestore(&priv->lock, flags);
1388
1389 /* wake up ucode */
1390 msleep(10);
1391
1392 spin_lock_irqsave(&priv->lock, flags);
1393 iwl_read32(priv, CSR_UCODE_DRV_GP1);
1394 if (!iwl_grab_nic_access(priv))
1395 iwl_release_nic_access(priv);
1396 spin_unlock_irqrestore(&priv->lock, flags);
1397
1398 if (test_bit(STATUS_RF_KILL_HW, &priv->status)) {
1399 IWL_DEBUG_RF_KILL("Can not turn radio back on - "
1400 "disabled by HW switch\n");
1401 return 0;
1402 }
1403
1404 if (priv->is_open)
1405 queue_work(priv->workqueue, &priv->restart);
1406 return 1;
1407 }
1408 EXPORT_SYMBOL(iwl_radio_kill_sw_enable_radio);
Linux kernel - Deliverables
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