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iwlwifi: refactor rx register initialization
[linux-2.6.git] / drivers / net / wireless / iwlwifi / iwl-core.c
blob4c312c55f90cf49838af8954e0e891a0893af99c
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 <net/mac80211.h>
32
33 struct iwl_priv; /* FIXME: remove */
34 #include "iwl-debug.h"
35 #include "iwl-eeprom.h"
36 #include "iwl-dev.h" /* FIXME: remove */
37 #include "iwl-core.h"
38 #include "iwl-io.h"
39 #include "iwl-rfkill.h"
40 #include "iwl-power.h"
41
42
43 MODULE_DESCRIPTION("iwl core");
44 MODULE_VERSION(IWLWIFI_VERSION);
45 MODULE_AUTHOR(DRV_COPYRIGHT);
46 MODULE_LICENSE("GPL");
47
48 #define IWL_DECLARE_RATE_INFO(r, s, ip, in, rp, rn, pp, np) \
49 [IWL_RATE_##r##M_INDEX] = { IWL_RATE_##r##M_PLCP, \
50 IWL_RATE_SISO_##s##M_PLCP, \
51 IWL_RATE_MIMO2_##s##M_PLCP,\
52 IWL_RATE_MIMO3_##s##M_PLCP,\
53 IWL_RATE_##r##M_IEEE, \
54 IWL_RATE_##ip##M_INDEX, \
55 IWL_RATE_##in##M_INDEX, \
56 IWL_RATE_##rp##M_INDEX, \
57 IWL_RATE_##rn##M_INDEX, \
58 IWL_RATE_##pp##M_INDEX, \
59 IWL_RATE_##np##M_INDEX }
60
61 /*
62 * Parameter order:
63 * rate, ht rate, prev rate, next rate, prev tgg rate, next tgg rate
64 *
65 * If there isn't a valid next or previous rate then INV is used which
66 * maps to IWL_RATE_INVALID
67 *
68 */
69 const struct iwl_rate_info iwl_rates[IWL_RATE_COUNT] = {
70 IWL_DECLARE_RATE_INFO(1, INV, INV, 2, INV, 2, INV, 2), /* 1mbps */
71 IWL_DECLARE_RATE_INFO(2, INV, 1, 5, 1, 5, 1, 5), /* 2mbps */
72 IWL_DECLARE_RATE_INFO(5, INV, 2, 6, 2, 11, 2, 11), /*5.5mbps */
73 IWL_DECLARE_RATE_INFO(11, INV, 9, 12, 9, 12, 5, 18), /* 11mbps */
74 IWL_DECLARE_RATE_INFO(6, 6, 5, 9, 5, 11, 5, 11), /* 6mbps */
75 IWL_DECLARE_RATE_INFO(9, 6, 6, 11, 6, 11, 5, 11), /* 9mbps */
76 IWL_DECLARE_RATE_INFO(12, 12, 11, 18, 11, 18, 11, 18), /* 12mbps */
77 IWL_DECLARE_RATE_INFO(18, 18, 12, 24, 12, 24, 11, 24), /* 18mbps */
78 IWL_DECLARE_RATE_INFO(24, 24, 18, 36, 18, 36, 18, 36), /* 24mbps */
79 IWL_DECLARE_RATE_INFO(36, 36, 24, 48, 24, 48, 24, 48), /* 36mbps */
80 IWL_DECLARE_RATE_INFO(48, 48, 36, 54, 36, 54, 36, 54), /* 48mbps */
81 IWL_DECLARE_RATE_INFO(54, 54, 48, INV, 48, INV, 48, INV),/* 54mbps */
82 IWL_DECLARE_RATE_INFO(60, 60, 48, INV, 48, INV, 48, INV),/* 60mbps */
83 /* FIXME:RS: ^^ should be INV (legacy) */
84 };
85 EXPORT_SYMBOL(iwl_rates);
86
87 /**
88 * translate ucode response to mac80211 tx status control values
89 */
90 void iwl_hwrate_to_tx_control(struct iwl_priv *priv, u32 rate_n_flags,
91 struct ieee80211_tx_info *control)
92 {
93 int rate_index;
94
95 control->antenna_sel_tx =
96 ((rate_n_flags & RATE_MCS_ANT_ABC_MSK) >> RATE_MCS_ANT_POS);
97 if (rate_n_flags & RATE_MCS_HT_MSK)
98 control->flags |= IEEE80211_TX_CTL_OFDM_HT;
99 if (rate_n_flags & RATE_MCS_GF_MSK)
100 control->flags |= IEEE80211_TX_CTL_GREEN_FIELD;
101 if (rate_n_flags & RATE_MCS_FAT_MSK)
102 control->flags |= IEEE80211_TX_CTL_40_MHZ_WIDTH;
103 if (rate_n_flags & RATE_MCS_DUP_MSK)
104 control->flags |= IEEE80211_TX_CTL_DUP_DATA;
105 if (rate_n_flags & RATE_MCS_SGI_MSK)
106 control->flags |= IEEE80211_TX_CTL_SHORT_GI;
107 rate_index = iwl_hwrate_to_plcp_idx(rate_n_flags);
108 if (control->band == IEEE80211_BAND_5GHZ)
109 rate_index -= IWL_FIRST_OFDM_RATE;
110 control->tx_rate_idx = rate_index;
111 }
112 EXPORT_SYMBOL(iwl_hwrate_to_tx_control);
113
114 int iwl_hwrate_to_plcp_idx(u32 rate_n_flags)
115 {
116 int idx = 0;
117
118 /* HT rate format */
119 if (rate_n_flags & RATE_MCS_HT_MSK) {
120 idx = (rate_n_flags & 0xff);
121
122 if (idx >= IWL_RATE_MIMO2_6M_PLCP)
123 idx = idx - IWL_RATE_MIMO2_6M_PLCP;
124
125 idx += IWL_FIRST_OFDM_RATE;
126 /* skip 9M not supported in ht*/
127 if (idx >= IWL_RATE_9M_INDEX)
128 idx += 1;
129 if ((idx >= IWL_FIRST_OFDM_RATE) && (idx <= IWL_LAST_OFDM_RATE))
130 return idx;
131
132 /* legacy rate format, search for match in table */
133 } else {
134 for (idx = 0; idx < ARRAY_SIZE(iwl_rates); idx++)
135 if (iwl_rates[idx].plcp == (rate_n_flags & 0xFF))
136 return idx;
137 }
138
139 return -1;
140 }
141 EXPORT_SYMBOL(iwl_hwrate_to_plcp_idx);
142
143
144
145 const u8 iwl_bcast_addr[ETH_ALEN] = { 0xFF, 0xFF, 0xFF, 0xFF, 0xFF, 0xFF };
146 EXPORT_SYMBOL(iwl_bcast_addr);
147
148
149 /* This function both allocates and initializes hw and priv. */
150 struct ieee80211_hw *iwl_alloc_all(struct iwl_cfg *cfg,
151 struct ieee80211_ops *hw_ops)
152 {
153 struct iwl_priv *priv;
154
155 /* mac80211 allocates memory for this device instance, including
156 * space for this driver's private structure */
157 struct ieee80211_hw *hw =
158 ieee80211_alloc_hw(sizeof(struct iwl_priv), hw_ops);
159 if (hw == NULL) {
160 IWL_ERROR("Can not allocate network device\n");
161 goto out;
162 }
163
164 priv = hw->priv;
165 priv->hw = hw;
166
167 out:
168 return hw;
169 }
170 EXPORT_SYMBOL(iwl_alloc_all);
171
172 void iwl_hw_detect(struct iwl_priv *priv)
173 {
174 priv->hw_rev = _iwl_read32(priv, CSR_HW_REV);
175 priv->hw_wa_rev = _iwl_read32(priv, CSR_HW_REV_WA_REG);
176 pci_read_config_byte(priv->pci_dev, PCI_REVISION_ID, &priv->rev_id);
177 }
178 EXPORT_SYMBOL(iwl_hw_detect);
179
180 /* Tell nic where to find the "keep warm" buffer */
181 int iwl_kw_init(struct iwl_priv *priv)
182 {
183 unsigned long flags;
184 int ret;
185
186 spin_lock_irqsave(&priv->lock, flags);
187 ret = iwl_grab_nic_access(priv);
188 if (ret)
189 goto out;
190
191 iwl_write_direct32(priv, FH_KW_MEM_ADDR_REG,
192 priv->kw.dma_addr >> 4);
193 iwl_release_nic_access(priv);
194 out:
195 spin_unlock_irqrestore(&priv->lock, flags);
196 return ret;
197 }
198
199 int iwl_kw_alloc(struct iwl_priv *priv)
200 {
201 struct pci_dev *dev = priv->pci_dev;
202 struct iwl_kw *kw = &priv->kw;
203
204 kw->size = IWL_KW_SIZE;
205 kw->v_addr = pci_alloc_consistent(dev, kw->size, &kw->dma_addr);
206 if (!kw->v_addr)
207 return -ENOMEM;
208
209 return 0;
210 }
211
212 /**
213 * iwl_kw_free - Free the "keep warm" buffer
214 */
215 void iwl_kw_free(struct iwl_priv *priv)
216 {
217 struct pci_dev *dev = priv->pci_dev;
218 struct iwl_kw *kw = &priv->kw;
219
220 if (kw->v_addr) {
221 pci_free_consistent(dev, kw->size, kw->v_addr, kw->dma_addr);
222 memset(kw, 0, sizeof(*kw));
223 }
224 }
225
226 int iwl_hw_nic_init(struct iwl_priv *priv)
227 {
228 unsigned long flags;
229 struct iwl_rx_queue *rxq = &priv->rxq;
230 int ret;
231
232 /* nic_init */
233 spin_lock_irqsave(&priv->lock, flags);
234 priv->cfg->ops->lib->apm_ops.init(priv);
235 iwl_write32(priv, CSR_INT_COALESCING, 512 / 32);
236 spin_unlock_irqrestore(&priv->lock, flags);
237
238 ret = priv->cfg->ops->lib->apm_ops.set_pwr_src(priv, IWL_PWR_SRC_VMAIN);
239
240 priv->cfg->ops->lib->apm_ops.config(priv);
241
242 /* Allocate the RX queue, or reset if it is already allocated */
243 if (!rxq->bd) {
244 ret = iwl_rx_queue_alloc(priv);
245 if (ret) {
246 IWL_ERROR("Unable to initialize Rx queue\n");
247 return -ENOMEM;
248 }
249 } else
250 iwl_rx_queue_reset(priv, rxq);
251
252 iwl_rx_replenish(priv);
253
254 iwl_rx_init(priv, rxq);
255
256 spin_lock_irqsave(&priv->lock, flags);
257
258 rxq->need_update = 1;
259 iwl_rx_queue_update_write_ptr(priv, rxq);
260
261 spin_unlock_irqrestore(&priv->lock, flags);
262
263 /* Allocate and init all Tx and Command queues */
264 ret = iwl_txq_ctx_reset(priv);
265 if (ret)
266 return ret;
267
268 set_bit(STATUS_INIT, &priv->status);
269
270 return 0;
271 }
272 EXPORT_SYMBOL(iwl_hw_nic_init);
273
274 /**
275 * iwl_clear_stations_table - Clear the driver's station table
276 *
277 * NOTE: This does not clear or otherwise alter the device's station table.
278 */
279 void iwl_clear_stations_table(struct iwl_priv *priv)
280 {
281 unsigned long flags;
282
283 spin_lock_irqsave(&priv->sta_lock, flags);
284
285 if (iwl_is_alive(priv) &&
286 !test_bit(STATUS_EXIT_PENDING, &priv->status) &&
287 iwl_send_cmd_pdu_async(priv, REPLY_REMOVE_ALL_STA, 0, NULL, NULL))
288 IWL_ERROR("Couldn't clear the station table\n");
289
290 priv->num_stations = 0;
291 memset(priv->stations, 0, sizeof(priv->stations));
292
293 spin_unlock_irqrestore(&priv->sta_lock, flags);
294 }
295 EXPORT_SYMBOL(iwl_clear_stations_table);
296
297 void iwl_reset_qos(struct iwl_priv *priv)
298 {
299 u16 cw_min = 15;
300 u16 cw_max = 1023;
301 u8 aifs = 2;
302 u8 is_legacy = 0;
303 unsigned long flags;
304 int i;
305
306 spin_lock_irqsave(&priv->lock, flags);
307 priv->qos_data.qos_active = 0;
308
309 if (priv->iw_mode == NL80211_IFTYPE_ADHOC) {
310 if (priv->qos_data.qos_enable)
311 priv->qos_data.qos_active = 1;
312 if (!(priv->active_rate & 0xfff0)) {
313 cw_min = 31;
314 is_legacy = 1;
315 }
316 } else if (priv->iw_mode == NL80211_IFTYPE_AP) {
317 if (priv->qos_data.qos_enable)
318 priv->qos_data.qos_active = 1;
319 } else if (!(priv->staging_rxon.flags & RXON_FLG_SHORT_SLOT_MSK)) {
320 cw_min = 31;
321 is_legacy = 1;
322 }
323
324 if (priv->qos_data.qos_active)
325 aifs = 3;
326
327 priv->qos_data.def_qos_parm.ac[0].cw_min = cpu_to_le16(cw_min);
328 priv->qos_data.def_qos_parm.ac[0].cw_max = cpu_to_le16(cw_max);
329 priv->qos_data.def_qos_parm.ac[0].aifsn = aifs;
330 priv->qos_data.def_qos_parm.ac[0].edca_txop = 0;
331 priv->qos_data.def_qos_parm.ac[0].reserved1 = 0;
332
333 if (priv->qos_data.qos_active) {
334 i = 1;
335 priv->qos_data.def_qos_parm.ac[i].cw_min = cpu_to_le16(cw_min);
336 priv->qos_data.def_qos_parm.ac[i].cw_max = cpu_to_le16(cw_max);
337 priv->qos_data.def_qos_parm.ac[i].aifsn = 7;
338 priv->qos_data.def_qos_parm.ac[i].edca_txop = 0;
339 priv->qos_data.def_qos_parm.ac[i].reserved1 = 0;
340
341 i = 2;
342 priv->qos_data.def_qos_parm.ac[i].cw_min =
343 cpu_to_le16((cw_min + 1) / 2 - 1);
344 priv->qos_data.def_qos_parm.ac[i].cw_max =
345 cpu_to_le16(cw_max);
346 priv->qos_data.def_qos_parm.ac[i].aifsn = 2;
347 if (is_legacy)
348 priv->qos_data.def_qos_parm.ac[i].edca_txop =
349 cpu_to_le16(6016);
350 else
351 priv->qos_data.def_qos_parm.ac[i].edca_txop =
352 cpu_to_le16(3008);
353 priv->qos_data.def_qos_parm.ac[i].reserved1 = 0;
354
355 i = 3;
356 priv->qos_data.def_qos_parm.ac[i].cw_min =
357 cpu_to_le16((cw_min + 1) / 4 - 1);
358 priv->qos_data.def_qos_parm.ac[i].cw_max =
359 cpu_to_le16((cw_max + 1) / 2 - 1);
360 priv->qos_data.def_qos_parm.ac[i].aifsn = 2;
361 priv->qos_data.def_qos_parm.ac[i].reserved1 = 0;
362 if (is_legacy)
363 priv->qos_data.def_qos_parm.ac[i].edca_txop =
364 cpu_to_le16(3264);
365 else
366 priv->qos_data.def_qos_parm.ac[i].edca_txop =
367 cpu_to_le16(1504);
368 } else {
369 for (i = 1; i < 4; i++) {
370 priv->qos_data.def_qos_parm.ac[i].cw_min =
371 cpu_to_le16(cw_min);
372 priv->qos_data.def_qos_parm.ac[i].cw_max =
373 cpu_to_le16(cw_max);
374 priv->qos_data.def_qos_parm.ac[i].aifsn = aifs;
375 priv->qos_data.def_qos_parm.ac[i].edca_txop = 0;
376 priv->qos_data.def_qos_parm.ac[i].reserved1 = 0;
377 }
378 }
379 IWL_DEBUG_QOS("set QoS to default \n");
380
381 spin_unlock_irqrestore(&priv->lock, flags);
382 }
383 EXPORT_SYMBOL(iwl_reset_qos);
384
385 #define MAX_BIT_RATE_40_MHZ 0x96 /* 150 Mbps */
386 #define MAX_BIT_RATE_20_MHZ 0x48 /* 72 Mbps */
387 static void iwlcore_init_ht_hw_capab(const struct iwl_priv *priv,
388 struct ieee80211_ht_info *ht_info,
389 enum ieee80211_band band)
390 {
391 u16 max_bit_rate = 0;
392 u8 rx_chains_num = priv->hw_params.rx_chains_num;
393 u8 tx_chains_num = priv->hw_params.tx_chains_num;
394
395 ht_info->cap = 0;
396 memset(ht_info->supp_mcs_set, 0, 16);
397
398 ht_info->ht_supported = 1;
399
400 ht_info->cap |= (u16)IEEE80211_HT_CAP_GRN_FLD;
401 ht_info->cap |= (u16)IEEE80211_HT_CAP_SGI_20;
402 ht_info->cap |= (u16)(IEEE80211_HT_CAP_SM_PS &
403 (WLAN_HT_CAP_SM_PS_DISABLED << 2));
404
405 max_bit_rate = MAX_BIT_RATE_20_MHZ;
406 if (priv->hw_params.fat_channel & BIT(band)) {
407 ht_info->cap |= (u16)IEEE80211_HT_CAP_SUP_WIDTH;
408 ht_info->cap |= (u16)IEEE80211_HT_CAP_SGI_40;
409 ht_info->supp_mcs_set[4] = 0x01;
410 max_bit_rate = MAX_BIT_RATE_40_MHZ;
411 }
412
413 if (priv->cfg->mod_params->amsdu_size_8K)
414 ht_info->cap |= (u16)IEEE80211_HT_CAP_MAX_AMSDU;
415
416 ht_info->ampdu_factor = CFG_HT_RX_AMPDU_FACTOR_DEF;
417 ht_info->ampdu_density = CFG_HT_MPDU_DENSITY_DEF;
418
419 ht_info->supp_mcs_set[0] = 0xFF;
420 if (rx_chains_num >= 2)
421 ht_info->supp_mcs_set[1] = 0xFF;
422 if (rx_chains_num >= 3)
423 ht_info->supp_mcs_set[2] = 0xFF;
424
425 /* Highest supported Rx data rate */
426 max_bit_rate *= rx_chains_num;
427 ht_info->supp_mcs_set[10] = (u8)(max_bit_rate & 0x00FF);
428 ht_info->supp_mcs_set[11] = (u8)((max_bit_rate & 0xFF00) >> 8);
429
430 /* Tx MCS capabilities */
431 ht_info->supp_mcs_set[12] = IEEE80211_HT_CAP_MCS_TX_DEFINED;
432 if (tx_chains_num != rx_chains_num) {
433 ht_info->supp_mcs_set[12] |= IEEE80211_HT_CAP_MCS_TX_RX_DIFF;
434 ht_info->supp_mcs_set[12] |= ((tx_chains_num - 1) << 2);
435 }
436 }
437
438 static void iwlcore_init_hw_rates(struct iwl_priv *priv,
439 struct ieee80211_rate *rates)
440 {
441 int i;
442
443 for (i = 0; i < IWL_RATE_COUNT; i++) {
444 rates[i].bitrate = iwl_rates[i].ieee * 5;
445 rates[i].hw_value = i; /* Rate scaling will work on indexes */
446 rates[i].hw_value_short = i;
447 rates[i].flags = 0;
448 if ((i > IWL_LAST_OFDM_RATE) || (i < IWL_FIRST_OFDM_RATE)) {
449 /*
450 * If CCK != 1M then set short preamble rate flag.
451 */
452 rates[i].flags |=
453 (iwl_rates[i].plcp == IWL_RATE_1M_PLCP) ?
454 0 : IEEE80211_RATE_SHORT_PREAMBLE;
455 }
456 }
457 }
458
459 /**
460 * iwlcore_init_geos - Initialize mac80211's geo/channel info based from eeprom
461 */
462 static int iwlcore_init_geos(struct iwl_priv *priv)
463 {
464 struct iwl_channel_info *ch;
465 struct ieee80211_supported_band *sband;
466 struct ieee80211_channel *channels;
467 struct ieee80211_channel *geo_ch;
468 struct ieee80211_rate *rates;
469 int i = 0;
470
471 if (priv->bands[IEEE80211_BAND_2GHZ].n_bitrates ||
472 priv->bands[IEEE80211_BAND_5GHZ].n_bitrates) {
473 IWL_DEBUG_INFO("Geography modes already initialized.\n");
474 set_bit(STATUS_GEO_CONFIGURED, &priv->status);
475 return 0;
476 }
477
478 channels = kzalloc(sizeof(struct ieee80211_channel) *
479 priv->channel_count, GFP_KERNEL);
480 if (!channels)
481 return -ENOMEM;
482
483 rates = kzalloc((sizeof(struct ieee80211_rate) * (IWL_RATE_COUNT + 1)),
484 GFP_KERNEL);
485 if (!rates) {
486 kfree(channels);
487 return -ENOMEM;
488 }
489
490 /* 5.2GHz channels start after the 2.4GHz channels */
491 sband = &priv->bands[IEEE80211_BAND_5GHZ];
492 sband->channels = &channels[ARRAY_SIZE(iwl_eeprom_band_1)];
493 /* just OFDM */
494 sband->bitrates = &rates[IWL_FIRST_OFDM_RATE];
495 sband->n_bitrates = IWL_RATE_COUNT - IWL_FIRST_OFDM_RATE;
496
497 if (priv->cfg->sku & IWL_SKU_N)
498 iwlcore_init_ht_hw_capab(priv, &sband->ht_info,
499 IEEE80211_BAND_5GHZ);
500
501 sband = &priv->bands[IEEE80211_BAND_2GHZ];
502 sband->channels = channels;
503 /* OFDM & CCK */
504 sband->bitrates = rates;
505 sband->n_bitrates = IWL_RATE_COUNT;
506
507 if (priv->cfg->sku & IWL_SKU_N)
508 iwlcore_init_ht_hw_capab(priv, &sband->ht_info,
509 IEEE80211_BAND_2GHZ);
510
511 priv->ieee_channels = channels;
512 priv->ieee_rates = rates;
513
514 iwlcore_init_hw_rates(priv, rates);
515
516 for (i = 0; i < priv->channel_count; i++) {
517 ch = &priv->channel_info[i];
518
519 /* FIXME: might be removed if scan is OK */
520 if (!is_channel_valid(ch))
521 continue;
522
523 if (is_channel_a_band(ch))
524 sband = &priv->bands[IEEE80211_BAND_5GHZ];
525 else
526 sband = &priv->bands[IEEE80211_BAND_2GHZ];
527
528 geo_ch = &sband->channels[sband->n_channels++];
529
530 geo_ch->center_freq =
531 ieee80211_channel_to_frequency(ch->channel);
532 geo_ch->max_power = ch->max_power_avg;
533 geo_ch->max_antenna_gain = 0xff;
534 geo_ch->hw_value = ch->channel;
535
536 if (is_channel_valid(ch)) {
537 if (!(ch->flags & EEPROM_CHANNEL_IBSS))
538 geo_ch->flags |= IEEE80211_CHAN_NO_IBSS;
539
540 if (!(ch->flags & EEPROM_CHANNEL_ACTIVE))
541 geo_ch->flags |= IEEE80211_CHAN_PASSIVE_SCAN;
542
543 if (ch->flags & EEPROM_CHANNEL_RADAR)
544 geo_ch->flags |= IEEE80211_CHAN_RADAR;
545
546 geo_ch->flags |= ch->fat_extension_channel;
547
548 if (ch->max_power_avg > priv->tx_power_channel_lmt)
549 priv->tx_power_channel_lmt = ch->max_power_avg;
550 } else {
551 geo_ch->flags |= IEEE80211_CHAN_DISABLED;
552 }
553
554 /* Save flags for reg domain usage */
555 geo_ch->orig_flags = geo_ch->flags;
556
557 IWL_DEBUG_INFO("Channel %d Freq=%d[%sGHz] %s flag=0x%X\n",
558 ch->channel, geo_ch->center_freq,
559 is_channel_a_band(ch) ? "5.2" : "2.4",
560 geo_ch->flags & IEEE80211_CHAN_DISABLED ?
561 "restricted" : "valid",
562 geo_ch->flags);
563 }
564
565 if ((priv->bands[IEEE80211_BAND_5GHZ].n_channels == 0) &&
566 priv->cfg->sku & IWL_SKU_A) {
567 printk(KERN_INFO DRV_NAME
568 ": Incorrectly detected BG card as ABG. Please send "
569 "your PCI ID 0x%04X:0x%04X to maintainer.\n",
570 priv->pci_dev->device, priv->pci_dev->subsystem_device);
571 priv->cfg->sku &= ~IWL_SKU_A;
572 }
573
574 printk(KERN_INFO DRV_NAME
575 ": Tunable channels: %d 802.11bg, %d 802.11a channels\n",
576 priv->bands[IEEE80211_BAND_2GHZ].n_channels,
577 priv->bands[IEEE80211_BAND_5GHZ].n_channels);
578
579
580 set_bit(STATUS_GEO_CONFIGURED, &priv->status);
581
582 return 0;
583 }
584
585 /*
586 * iwlcore_free_geos - undo allocations in iwlcore_init_geos
587 */
588 static void iwlcore_free_geos(struct iwl_priv *priv)
589 {
590 kfree(priv->ieee_channels);
591 kfree(priv->ieee_rates);
592 clear_bit(STATUS_GEO_CONFIGURED, &priv->status);
593 }
594
595 static bool is_single_rx_stream(struct iwl_priv *priv)
596 {
597 return !priv->current_ht_config.is_ht ||
598 ((priv->current_ht_config.supp_mcs_set[1] == 0) &&
599 (priv->current_ht_config.supp_mcs_set[2] == 0));
600 }
601
602 static u8 iwl_is_channel_extension(struct iwl_priv *priv,
603 enum ieee80211_band band,
604 u16 channel, u8 extension_chan_offset)
605 {
606 const struct iwl_channel_info *ch_info;
607
608 ch_info = iwl_get_channel_info(priv, band, channel);
609 if (!is_channel_valid(ch_info))
610 return 0;
611
612 if (extension_chan_offset == IEEE80211_HT_IE_CHA_SEC_ABOVE)
613 return !(ch_info->fat_extension_channel &
614 IEEE80211_CHAN_NO_FAT_ABOVE);
615 else if (extension_chan_offset == IEEE80211_HT_IE_CHA_SEC_BELOW)
616 return !(ch_info->fat_extension_channel &
617 IEEE80211_CHAN_NO_FAT_BELOW);
618
619 return 0;
620 }
621
622 u8 iwl_is_fat_tx_allowed(struct iwl_priv *priv,
623 struct ieee80211_ht_info *sta_ht_inf)
624 {
625 struct iwl_ht_info *iwl_ht_conf = &priv->current_ht_config;
626
627 if ((!iwl_ht_conf->is_ht) ||
628 (iwl_ht_conf->supported_chan_width != IWL_CHANNEL_WIDTH_40MHZ) ||
629 (iwl_ht_conf->extension_chan_offset == IEEE80211_HT_IE_CHA_SEC_NONE))
630 return 0;
631
632 if (sta_ht_inf) {
633 if ((!sta_ht_inf->ht_supported) ||
634 (!(sta_ht_inf->cap & IEEE80211_HT_CAP_SUP_WIDTH)))
635 return 0;
636 }
637
638 return iwl_is_channel_extension(priv, priv->band,
639 iwl_ht_conf->control_channel,
640 iwl_ht_conf->extension_chan_offset);
641 }
642 EXPORT_SYMBOL(iwl_is_fat_tx_allowed);
643
644 void iwl_set_rxon_ht(struct iwl_priv *priv, struct iwl_ht_info *ht_info)
645 {
646 struct iwl_rxon_cmd *rxon = &priv->staging_rxon;
647 u32 val;
648
649 if (!ht_info->is_ht) {
650 rxon->flags &= ~(RXON_FLG_CHANNEL_MODE_MIXED_MSK |
651 RXON_FLG_CHANNEL_MODE_PURE_40_MSK |
652 RXON_FLG_CTRL_CHANNEL_LOC_HI_MSK |
653 RXON_FLG_FAT_PROT_MSK |
654 RXON_FLG_HT_PROT_MSK);
655 return;
656 }
657
658 /* Set up channel bandwidth: 20 MHz only, or 20/40 mixed if fat ok */
659 if (iwl_is_fat_tx_allowed(priv, NULL))
660 rxon->flags |= RXON_FLG_CHANNEL_MODE_MIXED_MSK;
661 else
662 rxon->flags &= ~(RXON_FLG_CHANNEL_MODE_MIXED_MSK |
663 RXON_FLG_CHANNEL_MODE_PURE_40_MSK);
664
665 if (le16_to_cpu(rxon->channel) != ht_info->control_channel) {
666 IWL_DEBUG_ASSOC("control diff than current %d %d\n",
667 le16_to_cpu(rxon->channel),
668 ht_info->control_channel);
669 return;
670 }
671
672 /* Note: control channel is opposite of extension channel */
673 switch (ht_info->extension_chan_offset) {
674 case IEEE80211_HT_IE_CHA_SEC_ABOVE:
675 rxon->flags &= ~(RXON_FLG_CTRL_CHANNEL_LOC_HI_MSK);
676 break;
677 case IEEE80211_HT_IE_CHA_SEC_BELOW:
678 rxon->flags |= RXON_FLG_CTRL_CHANNEL_LOC_HI_MSK;
679 break;
680 case IEEE80211_HT_IE_CHA_SEC_NONE:
681 default:
682 rxon->flags &= ~RXON_FLG_CHANNEL_MODE_MIXED_MSK;
683 break;
684 }
685
686 val = ht_info->ht_protection;
687
688 rxon->flags |= cpu_to_le32(val << RXON_FLG_HT_OPERATING_MODE_POS);
689
690 iwl_set_rxon_chain(priv);
691
692 IWL_DEBUG_ASSOC("supported HT rate 0x%X 0x%X 0x%X "
693 "rxon flags 0x%X operation mode :0x%X "
694 "extension channel offset 0x%x "
695 "control chan %d\n",
696 ht_info->supp_mcs_set[0],
697 ht_info->supp_mcs_set[1],
698 ht_info->supp_mcs_set[2],
699 le32_to_cpu(rxon->flags), ht_info->ht_protection,
700 ht_info->extension_chan_offset,
701 ht_info->control_channel);
702 return;
703 }
704 EXPORT_SYMBOL(iwl_set_rxon_ht);
705
706 #define IWL_NUM_RX_CHAINS_MULTIPLE 3
707 #define IWL_NUM_RX_CHAINS_SINGLE 2
708 #define IWL_NUM_IDLE_CHAINS_DUAL 2
709 #define IWL_NUM_IDLE_CHAINS_SINGLE 1
710
711 /* Determine how many receiver/antenna chains to use.
712 * More provides better reception via diversity. Fewer saves power.
713 * MIMO (dual stream) requires at least 2, but works better with 3.
714 * This does not determine *which* chains to use, just how many.
715 */
716 static int iwl_get_active_rx_chain_count(struct iwl_priv *priv)
717 {
718 bool is_single = is_single_rx_stream(priv);
719 bool is_cam = !test_bit(STATUS_POWER_PMI, &priv->status);
720
721 /* # of Rx chains to use when expecting MIMO. */
722 if (is_single || (!is_cam && (priv->current_ht_config.sm_ps ==
723 WLAN_HT_CAP_SM_PS_STATIC)))
724 return IWL_NUM_RX_CHAINS_SINGLE;
725 else
726 return IWL_NUM_RX_CHAINS_MULTIPLE;
727 }
728
729 static int iwl_get_idle_rx_chain_count(struct iwl_priv *priv, int active_cnt)
730 {
731 int idle_cnt;
732 bool is_cam = !test_bit(STATUS_POWER_PMI, &priv->status);
733 /* # Rx chains when idling and maybe trying to save power */
734 switch (priv->current_ht_config.sm_ps) {
735 case WLAN_HT_CAP_SM_PS_STATIC:
736 case WLAN_HT_CAP_SM_PS_DYNAMIC:
737 idle_cnt = (is_cam) ? IWL_NUM_IDLE_CHAINS_DUAL :
738 IWL_NUM_IDLE_CHAINS_SINGLE;
739 break;
740 case WLAN_HT_CAP_SM_PS_DISABLED:
741 idle_cnt = (is_cam) ? active_cnt : IWL_NUM_IDLE_CHAINS_SINGLE;
742 break;
743 case WLAN_HT_CAP_SM_PS_INVALID:
744 default:
745 IWL_ERROR("invalide mimo ps mode %d\n",
746 priv->current_ht_config.sm_ps);
747 WARN_ON(1);
748 idle_cnt = -1;
749 break;
750 }
751 return idle_cnt;
752 }
753
754 /* up to 4 chains */
755 static u8 iwl_count_chain_bitmap(u32 chain_bitmap)
756 {
757 u8 res;
758 res = (chain_bitmap & BIT(0)) >> 0;
759 res += (chain_bitmap & BIT(1)) >> 1;
760 res += (chain_bitmap & BIT(2)) >> 2;
761 res += (chain_bitmap & BIT(4)) >> 4;
762 return res;
763 }
764
765 /**
766 * iwl_set_rxon_chain - Set up Rx chain usage in "staging" RXON image
767 *
768 * Selects how many and which Rx receivers/antennas/chains to use.
769 * This should not be used for scan command ... it puts data in wrong place.
770 */
771 void iwl_set_rxon_chain(struct iwl_priv *priv)
772 {
773 bool is_single = is_single_rx_stream(priv);
774 bool is_cam = !test_bit(STATUS_POWER_PMI, &priv->status);
775 u8 idle_rx_cnt, active_rx_cnt, valid_rx_cnt;
776 u32 active_chains;
777 u16 rx_chain;
778
779 /* Tell uCode which antennas are actually connected.
780 * Before first association, we assume all antennas are connected.
781 * Just after first association, iwl_chain_noise_calibration()
782 * checks which antennas actually *are* connected. */
783 if (priv->chain_noise_data.active_chains)
784 active_chains = priv->chain_noise_data.active_chains;
785 else
786 active_chains = priv->hw_params.valid_rx_ant;
787
788 rx_chain = active_chains << RXON_RX_CHAIN_VALID_POS;
789
790 /* How many receivers should we use? */
791 active_rx_cnt = iwl_get_active_rx_chain_count(priv);
792 idle_rx_cnt = iwl_get_idle_rx_chain_count(priv, active_rx_cnt);
793
794
795 /* correct rx chain count according hw settings
796 * and chain noise calibration
797 */
798 valid_rx_cnt = iwl_count_chain_bitmap(active_chains);
799 if (valid_rx_cnt < active_rx_cnt)
800 active_rx_cnt = valid_rx_cnt;
801
802 if (valid_rx_cnt < idle_rx_cnt)
803 idle_rx_cnt = valid_rx_cnt;
804
805 rx_chain |= active_rx_cnt << RXON_RX_CHAIN_MIMO_CNT_POS;
806 rx_chain |= idle_rx_cnt << RXON_RX_CHAIN_CNT_POS;
807
808 priv->staging_rxon.rx_chain = cpu_to_le16(rx_chain);
809
810 if (!is_single && (active_rx_cnt >= IWL_NUM_RX_CHAINS_SINGLE) && is_cam)
811 priv->staging_rxon.rx_chain |= RXON_RX_CHAIN_MIMO_FORCE_MSK;
812 else
813 priv->staging_rxon.rx_chain &= ~RXON_RX_CHAIN_MIMO_FORCE_MSK;
814
815 IWL_DEBUG_ASSOC("rx_chain=0x%X active=%d idle=%d\n",
816 priv->staging_rxon.rx_chain,
817 active_rx_cnt, idle_rx_cnt);
818
819 WARN_ON(active_rx_cnt == 0 || idle_rx_cnt == 0 ||
820 active_rx_cnt < idle_rx_cnt);
821 }
822 EXPORT_SYMBOL(iwl_set_rxon_chain);
823
824 /**
825 * iwl_set_rxon_channel - Set the phymode and channel values in staging RXON
826 * @phymode: MODE_IEEE80211A sets to 5.2GHz; all else set to 2.4GHz
827 * @channel: Any channel valid for the requested phymode
828
829 * In addition to setting the staging RXON, priv->phymode is also set.
830 *
831 * NOTE: Does not commit to the hardware; it sets appropriate bit fields
832 * in the staging RXON flag structure based on the phymode
833 */
834 int iwl_set_rxon_channel(struct iwl_priv *priv, struct ieee80211_channel *ch)
835 {
836 enum ieee80211_band band = ch->band;
837 u16 channel = ieee80211_frequency_to_channel(ch->center_freq);
838
839 if (!iwl_get_channel_info(priv, band, channel)) {
840 IWL_DEBUG_INFO("Could not set channel to %d [%d]\n",
841 channel, band);
842 return -EINVAL;
843 }
844
845 if ((le16_to_cpu(priv->staging_rxon.channel) == channel) &&
846 (priv->band == band))
847 return 0;
848
849 priv->staging_rxon.channel = cpu_to_le16(channel);
850 if (band == IEEE80211_BAND_5GHZ)
851 priv->staging_rxon.flags &= ~RXON_FLG_BAND_24G_MSK;
852 else
853 priv->staging_rxon.flags |= RXON_FLG_BAND_24G_MSK;
854
855 priv->band = band;
856
857 IWL_DEBUG_INFO("Staging channel set to %d [%d]\n", channel, band);
858
859 return 0;
860 }
861 EXPORT_SYMBOL(iwl_set_rxon_channel);
862
863 int iwl_setup_mac(struct iwl_priv *priv)
864 {
865 int ret;
866 struct ieee80211_hw *hw = priv->hw;
867 hw->rate_control_algorithm = "iwl-agn-rs";
868
869 /* Tell mac80211 our characteristics */
870 hw->flags = IEEE80211_HW_SIGNAL_DBM |
871 IEEE80211_HW_NOISE_DBM;
872 hw->wiphy->interface_modes =
873 BIT(NL80211_IFTYPE_AP) |
874 BIT(NL80211_IFTYPE_STATION) |
875 BIT(NL80211_IFTYPE_ADHOC);
876 /* Default value; 4 EDCA QOS priorities */
877 hw->queues = 4;
878 /* queues to support 11n aggregation */
879 if (priv->cfg->sku & IWL_SKU_N)
880 hw->ampdu_queues = priv->cfg->mod_params->num_of_ampdu_queues;
881
882 hw->conf.beacon_int = 100;
883 hw->max_listen_interval = IWL_CONN_MAX_LISTEN_INTERVAL;
884
885 if (priv->bands[IEEE80211_BAND_2GHZ].n_channels)
886 priv->hw->wiphy->bands[IEEE80211_BAND_2GHZ] =
887 &priv->bands[IEEE80211_BAND_2GHZ];
888 if (priv->bands[IEEE80211_BAND_5GHZ].n_channels)
889 priv->hw->wiphy->bands[IEEE80211_BAND_5GHZ] =
890 &priv->bands[IEEE80211_BAND_5GHZ];
891
892 ret = ieee80211_register_hw(priv->hw);
893 if (ret) {
894 IWL_ERROR("Failed to register hw (error %d)\n", ret);
895 return ret;
896 }
897 priv->mac80211_registered = 1;
898
899 return 0;
900 }
901 EXPORT_SYMBOL(iwl_setup_mac);
902
903 int iwl_set_hw_params(struct iwl_priv *priv)
904 {
905 priv->hw_params.sw_crypto = priv->cfg->mod_params->sw_crypto;
906 priv->hw_params.max_rxq_size = RX_QUEUE_SIZE;
907 priv->hw_params.max_rxq_log = RX_QUEUE_SIZE_LOG;
908 if (priv->cfg->mod_params->amsdu_size_8K)
909 priv->hw_params.rx_buf_size = IWL_RX_BUF_SIZE_8K;
910 else
911 priv->hw_params.rx_buf_size = IWL_RX_BUF_SIZE_4K;
912 priv->hw_params.max_pkt_size = priv->hw_params.rx_buf_size - 256;
913
914 if (priv->cfg->mod_params->disable_11n)
915 priv->cfg->sku &= ~IWL_SKU_N;
916
917 /* Device-specific setup */
918 return priv->cfg->ops->lib->set_hw_params(priv);
919 }
920 EXPORT_SYMBOL(iwl_set_hw_params);
921
922 int iwl_init_drv(struct iwl_priv *priv)
923 {
924 int ret;
925
926 priv->retry_rate = 1;
927 priv->ibss_beacon = NULL;
928
929 spin_lock_init(&priv->lock);
930 spin_lock_init(&priv->power_data.lock);
931 spin_lock_init(&priv->sta_lock);
932 spin_lock_init(&priv->hcmd_lock);
933
934 INIT_LIST_HEAD(&priv->free_frames);
935
936 mutex_init(&priv->mutex);
937
938 /* Clear the driver's (not device's) station table */
939 iwl_clear_stations_table(priv);
940
941 priv->data_retry_limit = -1;
942 priv->ieee_channels = NULL;
943 priv->ieee_rates = NULL;
944 priv->band = IEEE80211_BAND_2GHZ;
945
946 priv->iw_mode = NL80211_IFTYPE_STATION;
947
948 priv->use_ant_b_for_management_frame = 1; /* start with ant B */
949 priv->current_ht_config.sm_ps = WLAN_HT_CAP_SM_PS_DISABLED;
950
951 /* Choose which receivers/antennas to use */
952 iwl_set_rxon_chain(priv);
953 iwl_init_scan_params(priv);
954
955 if (priv->cfg->mod_params->enable_qos)
956 priv->qos_data.qos_enable = 1;
957
958 iwl_reset_qos(priv);
959
960 priv->qos_data.qos_active = 0;
961 priv->qos_data.qos_cap.val = 0;
962
963 priv->rates_mask = IWL_RATES_MASK;
964 /* If power management is turned on, default to AC mode */
965 priv->power_mode = IWL_POWER_AC;
966 priv->tx_power_user_lmt = IWL_TX_POWER_TARGET_POWER_MAX;
967
968 ret = iwl_init_channel_map(priv);
969 if (ret) {
970 IWL_ERROR("initializing regulatory failed: %d\n", ret);
971 goto err;
972 }
973
974 ret = iwlcore_init_geos(priv);
975 if (ret) {
976 IWL_ERROR("initializing geos failed: %d\n", ret);
977 goto err_free_channel_map;
978 }
979
980 return 0;
981
982 err_free_channel_map:
983 iwl_free_channel_map(priv);
984 err:
985 return ret;
986 }
987 EXPORT_SYMBOL(iwl_init_drv);
988
989 int iwl_set_tx_power(struct iwl_priv *priv, s8 tx_power, bool force)
990 {
991 int ret = 0;
992 if (tx_power < IWL_TX_POWER_TARGET_POWER_MIN) {
993 IWL_WARNING("Requested user TXPOWER %d below limit.\n",
994 priv->tx_power_user_lmt);
995 return -EINVAL;
996 }
997
998 if (tx_power > IWL_TX_POWER_TARGET_POWER_MAX) {
999 IWL_WARNING("Requested user TXPOWER %d above limit.\n",
1000 priv->tx_power_user_lmt);
1001 return -EINVAL;
1002 }
1003
1004 if (priv->tx_power_user_lmt != tx_power)
1005 force = true;
1006
1007 priv->tx_power_user_lmt = tx_power;
1008
1009 if (force && priv->cfg->ops->lib->send_tx_power)
1010 ret = priv->cfg->ops->lib->send_tx_power(priv);
1011
1012 return ret;
1013 }
1014 EXPORT_SYMBOL(iwl_set_tx_power);
1015
1016 void iwl_uninit_drv(struct iwl_priv *priv)
1017 {
1018 iwl_calib_free_results(priv);
1019 iwlcore_free_geos(priv);
1020 iwl_free_channel_map(priv);
1021 kfree(priv->scan);
1022 }
1023 EXPORT_SYMBOL(iwl_uninit_drv);
1024
1025 int iwl_send_statistics_request(struct iwl_priv *priv, u8 flags)
1026 {
1027 u32 stat_flags = 0;
1028 struct iwl_host_cmd cmd = {
1029 .id = REPLY_STATISTICS_CMD,
1030 .meta.flags = flags,
1031 .len = sizeof(stat_flags),
1032 .data = (u8 *) &stat_flags,
1033 };
1034 return iwl_send_cmd(priv, &cmd);
1035 }
1036 EXPORT_SYMBOL(iwl_send_statistics_request);
1037
1038 /**
1039 * iwl_verify_inst_sparse - verify runtime uCode image in card vs. host,
1040 * using sample data 100 bytes apart. If these sample points are good,
1041 * it's a pretty good bet that everything between them is good, too.
1042 */
1043 static int iwlcore_verify_inst_sparse(struct iwl_priv *priv, __le32 *image, u32 len)
1044 {
1045 u32 val;
1046 int ret = 0;
1047 u32 errcnt = 0;
1048 u32 i;
1049
1050 IWL_DEBUG_INFO("ucode inst image size is %u\n", len);
1051
1052 ret = iwl_grab_nic_access(priv);
1053 if (ret)
1054 return ret;
1055
1056 for (i = 0; i < len; i += 100, image += 100/sizeof(u32)) {
1057 /* read data comes through single port, auto-incr addr */
1058 /* NOTE: Use the debugless read so we don't flood kernel log
1059 * if IWL_DL_IO is set */
1060 iwl_write_direct32(priv, HBUS_TARG_MEM_RADDR,
1061 i + RTC_INST_LOWER_BOUND);
1062 val = _iwl_read_direct32(priv, HBUS_TARG_MEM_RDAT);
1063 if (val != le32_to_cpu(*image)) {
1064 ret = -EIO;
1065 errcnt++;
1066 if (errcnt >= 3)
1067 break;
1068 }
1069 }
1070
1071 iwl_release_nic_access(priv);
1072
1073 return ret;
1074 }
1075
1076 /**
1077 * iwlcore_verify_inst_full - verify runtime uCode image in card vs. host,
1078 * looking at all data.
1079 */
1080 static int iwl_verify_inst_full(struct iwl_priv *priv, __le32 *image,
1081 u32 len)
1082 {
1083 u32 val;
1084 u32 save_len = len;
1085 int ret = 0;
1086 u32 errcnt;
1087
1088 IWL_DEBUG_INFO("ucode inst image size is %u\n", len);
1089
1090 ret = iwl_grab_nic_access(priv);
1091 if (ret)
1092 return ret;
1093
1094 iwl_write_direct32(priv, HBUS_TARG_MEM_RADDR, RTC_INST_LOWER_BOUND);
1095
1096 errcnt = 0;
1097 for (; len > 0; len -= sizeof(u32), image++) {
1098 /* read data comes through single port, auto-incr addr */
1099 /* NOTE: Use the debugless read so we don't flood kernel log
1100 * if IWL_DL_IO is set */
1101 val = _iwl_read_direct32(priv, HBUS_TARG_MEM_RDAT);
1102 if (val != le32_to_cpu(*image)) {
1103 IWL_ERROR("uCode INST section is invalid at "
1104 "offset 0x%x, is 0x%x, s/b 0x%x\n",
1105 save_len - len, val, le32_to_cpu(*image));
1106 ret = -EIO;
1107 errcnt++;
1108 if (errcnt >= 20)
1109 break;
1110 }
1111 }
1112
1113 iwl_release_nic_access(priv);
1114
1115 if (!errcnt)
1116 IWL_DEBUG_INFO
1117 ("ucode image in INSTRUCTION memory is good\n");
1118
1119 return ret;
1120 }
1121
1122 /**
1123 * iwl_verify_ucode - determine which instruction image is in SRAM,
1124 * and verify its contents
1125 */
1126 int iwl_verify_ucode(struct iwl_priv *priv)
1127 {
1128 __le32 *image;
1129 u32 len;
1130 int ret;
1131
1132 /* Try bootstrap */
1133 image = (__le32 *)priv->ucode_boot.v_addr;
1134 len = priv->ucode_boot.len;
1135 ret = iwlcore_verify_inst_sparse(priv, image, len);
1136 if (!ret) {
1137 IWL_DEBUG_INFO("Bootstrap uCode is good in inst SRAM\n");
1138 return 0;
1139 }
1140
1141 /* Try initialize */
1142 image = (__le32 *)priv->ucode_init.v_addr;
1143 len = priv->ucode_init.len;
1144 ret = iwlcore_verify_inst_sparse(priv, image, len);
1145 if (!ret) {
1146 IWL_DEBUG_INFO("Initialize uCode is good in inst SRAM\n");
1147 return 0;
1148 }
1149
1150 /* Try runtime/protocol */
1151 image = (__le32 *)priv->ucode_code.v_addr;
1152 len = priv->ucode_code.len;
1153 ret = iwlcore_verify_inst_sparse(priv, image, len);
1154 if (!ret) {
1155 IWL_DEBUG_INFO("Runtime uCode is good in inst SRAM\n");
1156 return 0;
1157 }
1158
1159 IWL_ERROR("NO VALID UCODE IMAGE IN INSTRUCTION SRAM!!\n");
1160
1161 /* Since nothing seems to match, show first several data entries in
1162 * instruction SRAM, so maybe visual inspection will give a clue.
1163 * Selection of bootstrap image (vs. other images) is arbitrary. */
1164 image = (__le32 *)priv->ucode_boot.v_addr;
1165 len = priv->ucode_boot.len;
1166 ret = iwl_verify_inst_full(priv, image, len);
1167
1168 return ret;
1169 }
1170 EXPORT_SYMBOL(iwl_verify_ucode);
1171
1172 static const char *desc_lookup(int i)
1173 {
1174 switch (i) {
1175 case 1:
1176 return "FAIL";
1177 case 2:
1178 return "BAD_PARAM";
1179 case 3:
1180 return "BAD_CHECKSUM";
1181 case 4:
1182 return "NMI_INTERRUPT";
1183 case 5:
1184 return "SYSASSERT";
1185 case 6:
1186 return "FATAL_ERROR";
1187 }
1188
1189 return "UNKNOWN";
1190 }
1191
1192 #define ERROR_START_OFFSET (1 * sizeof(u32))
1193 #define ERROR_ELEM_SIZE (7 * sizeof(u32))
1194
1195 void iwl_dump_nic_error_log(struct iwl_priv *priv)
1196 {
1197 u32 data2, line;
1198 u32 desc, time, count, base, data1;
1199 u32 blink1, blink2, ilink1, ilink2;
1200 int ret;
1201
1202 if (priv->ucode_type == UCODE_INIT)
1203 base = le32_to_cpu(priv->card_alive_init.error_event_table_ptr);
1204 else
1205 base = le32_to_cpu(priv->card_alive.error_event_table_ptr);
1206
1207 if (!priv->cfg->ops->lib->is_valid_rtc_data_addr(base)) {
1208 IWL_ERROR("Not valid error log pointer 0x%08X\n", base);
1209 return;
1210 }
1211
1212 ret = iwl_grab_nic_access(priv);
1213 if (ret) {
1214 IWL_WARNING("Can not read from adapter at this time.\n");
1215 return;
1216 }
1217
1218 count = iwl_read_targ_mem(priv, base);
1219
1220 if (ERROR_START_OFFSET <= count * ERROR_ELEM_SIZE) {
1221 IWL_ERROR("Start IWL Error Log Dump:\n");
1222 IWL_ERROR("Status: 0x%08lX, count: %d\n", priv->status, count);
1223 }
1224
1225 desc = iwl_read_targ_mem(priv, base + 1 * sizeof(u32));
1226 blink1 = iwl_read_targ_mem(priv, base + 3 * sizeof(u32));
1227 blink2 = iwl_read_targ_mem(priv, base + 4 * sizeof(u32));
1228 ilink1 = iwl_read_targ_mem(priv, base + 5 * sizeof(u32));
1229 ilink2 = iwl_read_targ_mem(priv, base + 6 * sizeof(u32));
1230 data1 = iwl_read_targ_mem(priv, base + 7 * sizeof(u32));
1231 data2 = iwl_read_targ_mem(priv, base + 8 * sizeof(u32));
1232 line = iwl_read_targ_mem(priv, base + 9 * sizeof(u32));
1233 time = iwl_read_targ_mem(priv, base + 11 * sizeof(u32));
1234
1235 IWL_ERROR("Desc Time "
1236 "data1 data2 line\n");
1237 IWL_ERROR("%-13s (#%d) %010u 0x%08X 0x%08X %u\n",
1238 desc_lookup(desc), desc, time, data1, data2, line);
1239 IWL_ERROR("blink1 blink2 ilink1 ilink2\n");
1240 IWL_ERROR("0x%05X 0x%05X 0x%05X 0x%05X\n", blink1, blink2,
1241 ilink1, ilink2);
1242
1243 iwl_release_nic_access(priv);
1244 }
1245 EXPORT_SYMBOL(iwl_dump_nic_error_log);
1246
1247 #define EVENT_START_OFFSET (4 * sizeof(u32))
1248
1249 /**
1250 * iwl_print_event_log - Dump error event log to syslog
1251 *
1252 * NOTE: Must be called with iwl_grab_nic_access() already obtained!
1253 */
1254 static void iwl_print_event_log(struct iwl_priv *priv, u32 start_idx,
1255 u32 num_events, u32 mode)
1256 {
1257 u32 i;
1258 u32 base; /* SRAM byte address of event log header */
1259 u32 event_size; /* 2 u32s, or 3 u32s if timestamp recorded */
1260 u32 ptr; /* SRAM byte address of log data */
1261 u32 ev, time, data; /* event log data */
1262
1263 if (num_events == 0)
1264 return;
1265 if (priv->ucode_type == UCODE_INIT)
1266 base = le32_to_cpu(priv->card_alive_init.log_event_table_ptr);
1267 else
1268 base = le32_to_cpu(priv->card_alive.log_event_table_ptr);
1269
1270 if (mode == 0)
1271 event_size = 2 * sizeof(u32);
1272 else
1273 event_size = 3 * sizeof(u32);
1274
1275 ptr = base + EVENT_START_OFFSET + (start_idx * event_size);
1276
1277 /* "time" is actually "data" for mode 0 (no timestamp).
1278 * place event id # at far right for easier visual parsing. */
1279 for (i = 0; i < num_events; i++) {
1280 ev = iwl_read_targ_mem(priv, ptr);
1281 ptr += sizeof(u32);
1282 time = iwl_read_targ_mem(priv, ptr);
1283 ptr += sizeof(u32);
1284 if (mode == 0) {
1285 /* data, ev */
1286 IWL_ERROR("EVT_LOG:0x%08x:%04u\n", time, ev);
1287 } else {
1288 data = iwl_read_targ_mem(priv, ptr);
1289 ptr += sizeof(u32);
1290 IWL_ERROR("EVT_LOGT:%010u:0x%08x:%04u\n",
1291 time, data, ev);
1292 }
1293 }
1294 }
1295
1296 void iwl_dump_nic_event_log(struct iwl_priv *priv)
1297 {
1298 int ret;
1299 u32 base; /* SRAM byte address of event log header */
1300 u32 capacity; /* event log capacity in # entries */
1301 u32 mode; /* 0 - no timestamp, 1 - timestamp recorded */
1302 u32 num_wraps; /* # times uCode wrapped to top of log */
1303 u32 next_entry; /* index of next entry to be written by uCode */
1304 u32 size; /* # entries that we'll print */
1305
1306 if (priv->ucode_type == UCODE_INIT)
1307 base = le32_to_cpu(priv->card_alive_init.log_event_table_ptr);
1308 else
1309 base = le32_to_cpu(priv->card_alive.log_event_table_ptr);
1310
1311 if (!priv->cfg->ops->lib->is_valid_rtc_data_addr(base)) {
1312 IWL_ERROR("Invalid event log pointer 0x%08X\n", base);
1313 return;
1314 }
1315
1316 ret = iwl_grab_nic_access(priv);
1317 if (ret) {
1318 IWL_WARNING("Can not read from adapter at this time.\n");
1319 return;
1320 }
1321
1322 /* event log header */
1323 capacity = iwl_read_targ_mem(priv, base);
1324 mode = iwl_read_targ_mem(priv, base + (1 * sizeof(u32)));
1325 num_wraps = iwl_read_targ_mem(priv, base + (2 * sizeof(u32)));
1326 next_entry = iwl_read_targ_mem(priv, base + (3 * sizeof(u32)));
1327
1328 size = num_wraps ? capacity : next_entry;
1329
1330 /* bail out if nothing in log */
1331 if (size == 0) {
1332 IWL_ERROR("Start IWL Event Log Dump: nothing in log\n");
1333 iwl_release_nic_access(priv);
1334 return;
1335 }
1336
1337 IWL_ERROR("Start IWL Event Log Dump: display count %d, wraps %d\n",
1338 size, num_wraps);
1339
1340 /* if uCode has wrapped back to top of log, start at the oldest entry,
1341 * i.e the next one that uCode would fill. */
1342 if (num_wraps)
1343 iwl_print_event_log(priv, next_entry,
1344 capacity - next_entry, mode);
1345 /* (then/else) start at top of log */
1346 iwl_print_event_log(priv, 0, next_entry, mode);
1347
1348 iwl_release_nic_access(priv);
1349 }
1350 EXPORT_SYMBOL(iwl_dump_nic_event_log);
1351
1352 void iwl_rf_kill_ct_config(struct iwl_priv *priv)
1353 {
1354 struct iwl_ct_kill_config cmd;
1355 unsigned long flags;
1356 int ret = 0;
1357
1358 spin_lock_irqsave(&priv->lock, flags);
1359 iwl_write32(priv, CSR_UCODE_DRV_GP1_CLR,
1360 CSR_UCODE_DRV_GP1_REG_BIT_CT_KILL_EXIT);
1361 spin_unlock_irqrestore(&priv->lock, flags);
1362
1363 cmd.critical_temperature_R =
1364 cpu_to_le32(priv->hw_params.ct_kill_threshold);
1365
1366 ret = iwl_send_cmd_pdu(priv, REPLY_CT_KILL_CONFIG_CMD,
1367 sizeof(cmd), &cmd);
1368 if (ret)
1369 IWL_ERROR("REPLY_CT_KILL_CONFIG_CMD failed\n");
1370 else
1371 IWL_DEBUG_INFO("REPLY_CT_KILL_CONFIG_CMD succeeded, "
1372 "critical temperature is %d\n",
1373 cmd.critical_temperature_R);
1374 }
1375 EXPORT_SYMBOL(iwl_rf_kill_ct_config);
1376
1377 /*
1378 * CARD_STATE_CMD
1379 *
1380 * Use: Sets the device's internal card state to enable, disable, or halt
1381 *
1382 * When in the 'enable' state the card operates as normal.
1383 * When in the 'disable' state, the card enters into a low power mode.
1384 * When in the 'halt' state, the card is shut down and must be fully
1385 * restarted to come back on.
1386 */
1387 static int iwl_send_card_state(struct iwl_priv *priv, u32 flags, u8 meta_flag)
1388 {
1389 struct iwl_host_cmd cmd = {
1390 .id = REPLY_CARD_STATE_CMD,
1391 .len = sizeof(u32),
1392 .data = &flags,
1393 .meta.flags = meta_flag,
1394 };
1395
1396 return iwl_send_cmd(priv, &cmd);
1397 }
1398
1399 void iwl_radio_kill_sw_disable_radio(struct iwl_priv *priv)
1400 {
1401 unsigned long flags;
1402
1403 if (test_bit(STATUS_RF_KILL_SW, &priv->status))
1404 return;
1405
1406 IWL_DEBUG_RF_KILL("Manual SW RF KILL set to: RADIO OFF\n");
1407
1408 iwl_scan_cancel(priv);
1409 /* FIXME: This is a workaround for AP */
1410 if (priv->iw_mode != NL80211_IFTYPE_AP) {
1411 spin_lock_irqsave(&priv->lock, flags);
1412 iwl_write32(priv, CSR_UCODE_DRV_GP1_SET,
1413 CSR_UCODE_SW_BIT_RFKILL);
1414 spin_unlock_irqrestore(&priv->lock, flags);
1415 /* call the host command only if no hw rf-kill set */
1416 if (!test_bit(STATUS_RF_KILL_HW, &priv->status) &&
1417 iwl_is_ready(priv))
1418 iwl_send_card_state(priv,
1419 CARD_STATE_CMD_DISABLE, 0);
1420 set_bit(STATUS_RF_KILL_SW, &priv->status);
1421 /* make sure mac80211 stop sending Tx frame */
1422 if (priv->mac80211_registered)
1423 ieee80211_stop_queues(priv->hw);
1424 }
1425 }
1426 EXPORT_SYMBOL(iwl_radio_kill_sw_disable_radio);
1427
1428 int iwl_radio_kill_sw_enable_radio(struct iwl_priv *priv)
1429 {
1430 unsigned long flags;
1431
1432 if (!test_bit(STATUS_RF_KILL_SW, &priv->status))
1433 return 0;
1434
1435 IWL_DEBUG_RF_KILL("Manual SW RF KILL set to: RADIO ON\n");
1436
1437 spin_lock_irqsave(&priv->lock, flags);
1438 iwl_write32(priv, CSR_UCODE_DRV_GP1_CLR, CSR_UCODE_SW_BIT_RFKILL);
1439
1440 /* If the driver is up it will receive CARD_STATE_NOTIFICATION
1441 * notification where it will clear SW rfkill status.
1442 * Setting it here would break the handler. Only if the
1443 * interface is down we can set here since we don't
1444 * receive any further notification.
1445 */
1446 if (!priv->is_open)
1447 clear_bit(STATUS_RF_KILL_SW, &priv->status);
1448 spin_unlock_irqrestore(&priv->lock, flags);
1449
1450 /* wake up ucode */
1451 msleep(10);
1452
1453 spin_lock_irqsave(&priv->lock, flags);
1454 iwl_read32(priv, CSR_UCODE_DRV_GP1);
1455 if (!iwl_grab_nic_access(priv))
1456 iwl_release_nic_access(priv);
1457 spin_unlock_irqrestore(&priv->lock, flags);
1458
1459 if (test_bit(STATUS_RF_KILL_HW, &priv->status)) {
1460 IWL_DEBUG_RF_KILL("Can not turn radio back on - "
1461 "disabled by HW switch\n");
1462 return 0;
1463 }
1464
1465 /* If the driver is already loaded, it will receive
1466 * CARD_STATE_NOTIFICATION notifications and the handler will
1467 * call restart to reload the driver.
1468 */
1469 return 1;
1470 }
1471 EXPORT_SYMBOL(iwl_radio_kill_sw_enable_radio);
Linus' kernel tree