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iwlwifi: support idle for 6000 series hw
[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 struct ieee80211_tx_rate *r = &info->control.rates[0];
100
101 info->antenna_sel_tx =
102 ((rate_n_flags & RATE_MCS_ANT_ABC_MSK) >> RATE_MCS_ANT_POS);
103 if (rate_n_flags & RATE_MCS_HT_MSK)
104 r->flags |= IEEE80211_TX_RC_MCS;
105 if (rate_n_flags & RATE_MCS_GF_MSK)
106 r->flags |= IEEE80211_TX_RC_GREEN_FIELD;
107 if (rate_n_flags & RATE_MCS_HT40_MSK)
108 r->flags |= IEEE80211_TX_RC_40_MHZ_WIDTH;
109 if (rate_n_flags & RATE_MCS_DUP_MSK)
110 r->flags |= IEEE80211_TX_RC_DUP_DATA;
111 if (rate_n_flags & RATE_MCS_SGI_MSK)
112 r->flags |= IEEE80211_TX_RC_SHORT_GI;
113 r->idx = iwl_hwrate_to_mac80211_idx(rate_n_flags, info->band);
114 }
115 EXPORT_SYMBOL(iwl_hwrate_to_tx_control);
116
117 int iwl_hwrate_to_plcp_idx(u32 rate_n_flags)
118 {
119 int idx = 0;
120
121 /* HT rate format */
122 if (rate_n_flags & RATE_MCS_HT_MSK) {
123 idx = (rate_n_flags & 0xff);
124
125 if (idx >= IWL_RATE_MIMO3_6M_PLCP)
126 idx = idx - IWL_RATE_MIMO3_6M_PLCP;
127 else if (idx >= IWL_RATE_MIMO2_6M_PLCP)
128 idx = idx - IWL_RATE_MIMO2_6M_PLCP;
129
130 idx += IWL_FIRST_OFDM_RATE;
131 /* skip 9M not supported in ht*/
132 if (idx >= IWL_RATE_9M_INDEX)
133 idx += 1;
134 if ((idx >= IWL_FIRST_OFDM_RATE) && (idx <= IWL_LAST_OFDM_RATE))
135 return idx;
136
137 /* legacy rate format, search for match in table */
138 } else {
139 for (idx = 0; idx < ARRAY_SIZE(iwl_rates); idx++)
140 if (iwl_rates[idx].plcp == (rate_n_flags & 0xFF))
141 return idx;
142 }
143
144 return -1;
145 }
146 EXPORT_SYMBOL(iwl_hwrate_to_plcp_idx);
147
148 int iwl_hwrate_to_mac80211_idx(u32 rate_n_flags, enum ieee80211_band band)
149 {
150 int idx = 0;
151 int band_offset = 0;
152
153 /* HT rate format: mac80211 wants an MCS number, which is just LSB */
154 if (rate_n_flags & RATE_MCS_HT_MSK) {
155 idx = (rate_n_flags & 0xff);
156 return idx;
157 /* Legacy rate format, search for match in table */
158 } else {
159 if (band == IEEE80211_BAND_5GHZ)
160 band_offset = IWL_FIRST_OFDM_RATE;
161 for (idx = band_offset; idx < IWL_RATE_COUNT_LEGACY; idx++)
162 if (iwl_rates[idx].plcp == (rate_n_flags & 0xFF))
163 return idx - band_offset;
164 }
165
166 return -1;
167 }
168
169 u8 iwl_toggle_tx_ant(struct iwl_priv *priv, u8 ant)
170 {
171 int i;
172 u8 ind = ant;
173 for (i = 0; i < RATE_ANT_NUM - 1; i++) {
174 ind = (ind + 1) < RATE_ANT_NUM ? ind + 1 : 0;
175 if (priv->hw_params.valid_tx_ant & BIT(ind))
176 return ind;
177 }
178 return ant;
179 }
180
181 const u8 iwl_bcast_addr[ETH_ALEN] = { 0xFF, 0xFF, 0xFF, 0xFF, 0xFF, 0xFF };
182 EXPORT_SYMBOL(iwl_bcast_addr);
183
184
185 /* This function both allocates and initializes hw and priv. */
186 struct ieee80211_hw *iwl_alloc_all(struct iwl_cfg *cfg,
187 struct ieee80211_ops *hw_ops)
188 {
189 struct iwl_priv *priv;
190
191 /* mac80211 allocates memory for this device instance, including
192 * space for this driver's private structure */
193 struct ieee80211_hw *hw =
194 ieee80211_alloc_hw(sizeof(struct iwl_priv), hw_ops);
195 if (hw == NULL) {
196 printk(KERN_ERR "%s: Can not allocate network device\n",
197 cfg->name);
198 goto out;
199 }
200
201 priv = hw->priv;
202 priv->hw = hw;
203
204 out:
205 return hw;
206 }
207 EXPORT_SYMBOL(iwl_alloc_all);
208
209 void iwl_hw_detect(struct iwl_priv *priv)
210 {
211 priv->hw_rev = _iwl_read32(priv, CSR_HW_REV);
212 priv->hw_wa_rev = _iwl_read32(priv, CSR_HW_REV_WA_REG);
213 pci_read_config_byte(priv->pci_dev, PCI_REVISION_ID, &priv->rev_id);
214 }
215 EXPORT_SYMBOL(iwl_hw_detect);
216
217 int iwl_hw_nic_init(struct iwl_priv *priv)
218 {
219 unsigned long flags;
220 struct iwl_rx_queue *rxq = &priv->rxq;
221 int ret;
222
223 /* nic_init */
224 spin_lock_irqsave(&priv->lock, flags);
225 priv->cfg->ops->lib->apm_ops.init(priv);
226 iwl_write32(priv, CSR_INT_COALESCING, 512 / 32);
227 spin_unlock_irqrestore(&priv->lock, flags);
228
229 ret = priv->cfg->ops->lib->apm_ops.set_pwr_src(priv, IWL_PWR_SRC_VMAIN);
230
231 priv->cfg->ops->lib->apm_ops.config(priv);
232
233 /* Allocate the RX queue, or reset if it is already allocated */
234 if (!rxq->bd) {
235 ret = iwl_rx_queue_alloc(priv);
236 if (ret) {
237 IWL_ERR(priv, "Unable to initialize Rx queue\n");
238 return -ENOMEM;
239 }
240 } else
241 iwl_rx_queue_reset(priv, rxq);
242
243 iwl_rx_replenish(priv);
244
245 iwl_rx_init(priv, rxq);
246
247 spin_lock_irqsave(&priv->lock, flags);
248
249 rxq->need_update = 1;
250 iwl_rx_queue_update_write_ptr(priv, rxq);
251
252 spin_unlock_irqrestore(&priv->lock, flags);
253
254 /* Allocate and init all Tx and Command queues */
255 ret = iwl_txq_ctx_reset(priv);
256 if (ret)
257 return ret;
258
259 set_bit(STATUS_INIT, &priv->status);
260
261 return 0;
262 }
263 EXPORT_SYMBOL(iwl_hw_nic_init);
264
265 /*
266 * QoS support
267 */
268 void iwl_activate_qos(struct iwl_priv *priv, u8 force)
269 {
270 if (test_bit(STATUS_EXIT_PENDING, &priv->status))
271 return;
272
273 priv->qos_data.def_qos_parm.qos_flags = 0;
274
275 if (priv->qos_data.qos_cap.q_AP.queue_request &&
276 !priv->qos_data.qos_cap.q_AP.txop_request)
277 priv->qos_data.def_qos_parm.qos_flags |=
278 QOS_PARAM_FLG_TXOP_TYPE_MSK;
279 if (priv->qos_data.qos_active)
280 priv->qos_data.def_qos_parm.qos_flags |=
281 QOS_PARAM_FLG_UPDATE_EDCA_MSK;
282
283 if (priv->current_ht_config.is_ht)
284 priv->qos_data.def_qos_parm.qos_flags |= QOS_PARAM_FLG_TGN_MSK;
285
286 if (force || iwl_is_associated(priv)) {
287 IWL_DEBUG_QOS(priv, "send QoS cmd with Qos active=%d FLAGS=0x%X\n",
288 priv->qos_data.qos_active,
289 priv->qos_data.def_qos_parm.qos_flags);
290
291 iwl_send_cmd_pdu_async(priv, REPLY_QOS_PARAM,
292 sizeof(struct iwl_qosparam_cmd),
293 &priv->qos_data.def_qos_parm, NULL);
294 }
295 }
296 EXPORT_SYMBOL(iwl_activate_qos);
297
298 /*
299 * AC CWmin CW max AIFSN TXOP Limit TXOP Limit
300 * (802.11b) (802.11a/g)
301 * AC_BK 15 1023 7 0 0
302 * AC_BE 15 1023 3 0 0
303 * AC_VI 7 15 2 6.016ms 3.008ms
304 * AC_VO 3 7 2 3.264ms 1.504ms
305 */
306 void iwl_reset_qos(struct iwl_priv *priv)
307 {
308 u16 cw_min = 15;
309 u16 cw_max = 1023;
310 u8 aifs = 2;
311 bool is_legacy = false;
312 unsigned long flags;
313 int i;
314
315 spin_lock_irqsave(&priv->lock, flags);
316 /* QoS always active in AP and ADHOC mode
317 * In STA mode wait for association
318 */
319 if (priv->iw_mode == NL80211_IFTYPE_ADHOC ||
320 priv->iw_mode == NL80211_IFTYPE_AP)
321 priv->qos_data.qos_active = 1;
322 else
323 priv->qos_data.qos_active = 0;
324
325 /* check for legacy mode */
326 if ((priv->iw_mode == NL80211_IFTYPE_ADHOC &&
327 (priv->active_rate & IWL_OFDM_RATES_MASK) == 0) ||
328 (priv->iw_mode == NL80211_IFTYPE_STATION &&
329 (priv->staging_rxon.flags & RXON_FLG_SHORT_SLOT_MSK) == 0)) {
330 cw_min = 31;
331 is_legacy = 1;
332 }
333
334 if (priv->qos_data.qos_active)
335 aifs = 3;
336
337 /* AC_BE */
338 priv->qos_data.def_qos_parm.ac[0].cw_min = cpu_to_le16(cw_min);
339 priv->qos_data.def_qos_parm.ac[0].cw_max = cpu_to_le16(cw_max);
340 priv->qos_data.def_qos_parm.ac[0].aifsn = aifs;
341 priv->qos_data.def_qos_parm.ac[0].edca_txop = 0;
342 priv->qos_data.def_qos_parm.ac[0].reserved1 = 0;
343
344 if (priv->qos_data.qos_active) {
345 /* AC_BK */
346 i = 1;
347 priv->qos_data.def_qos_parm.ac[i].cw_min = cpu_to_le16(cw_min);
348 priv->qos_data.def_qos_parm.ac[i].cw_max = cpu_to_le16(cw_max);
349 priv->qos_data.def_qos_parm.ac[i].aifsn = 7;
350 priv->qos_data.def_qos_parm.ac[i].edca_txop = 0;
351 priv->qos_data.def_qos_parm.ac[i].reserved1 = 0;
352
353 /* AC_VI */
354 i = 2;
355 priv->qos_data.def_qos_parm.ac[i].cw_min =
356 cpu_to_le16((cw_min + 1) / 2 - 1);
357 priv->qos_data.def_qos_parm.ac[i].cw_max =
358 cpu_to_le16(cw_min);
359 priv->qos_data.def_qos_parm.ac[i].aifsn = 2;
360 if (is_legacy)
361 priv->qos_data.def_qos_parm.ac[i].edca_txop =
362 cpu_to_le16(6016);
363 else
364 priv->qos_data.def_qos_parm.ac[i].edca_txop =
365 cpu_to_le16(3008);
366 priv->qos_data.def_qos_parm.ac[i].reserved1 = 0;
367
368 /* AC_VO */
369 i = 3;
370 priv->qos_data.def_qos_parm.ac[i].cw_min =
371 cpu_to_le16((cw_min + 1) / 4 - 1);
372 priv->qos_data.def_qos_parm.ac[i].cw_max =
373 cpu_to_le16((cw_min + 1) / 2 - 1);
374 priv->qos_data.def_qos_parm.ac[i].aifsn = 2;
375 priv->qos_data.def_qos_parm.ac[i].reserved1 = 0;
376 if (is_legacy)
377 priv->qos_data.def_qos_parm.ac[i].edca_txop =
378 cpu_to_le16(3264);
379 else
380 priv->qos_data.def_qos_parm.ac[i].edca_txop =
381 cpu_to_le16(1504);
382 } else {
383 for (i = 1; i < 4; i++) {
384 priv->qos_data.def_qos_parm.ac[i].cw_min =
385 cpu_to_le16(cw_min);
386 priv->qos_data.def_qos_parm.ac[i].cw_max =
387 cpu_to_le16(cw_max);
388 priv->qos_data.def_qos_parm.ac[i].aifsn = aifs;
389 priv->qos_data.def_qos_parm.ac[i].edca_txop = 0;
390 priv->qos_data.def_qos_parm.ac[i].reserved1 = 0;
391 }
392 }
393 IWL_DEBUG_QOS(priv, "set QoS to default \n");
394
395 spin_unlock_irqrestore(&priv->lock, flags);
396 }
397 EXPORT_SYMBOL(iwl_reset_qos);
398
399 #define MAX_BIT_RATE_40_MHZ 150 /* Mbps */
400 #define MAX_BIT_RATE_20_MHZ 72 /* Mbps */
401 static void iwlcore_init_ht_hw_capab(const struct iwl_priv *priv,
402 struct ieee80211_sta_ht_cap *ht_info,
403 enum ieee80211_band band)
404 {
405 u16 max_bit_rate = 0;
406 u8 rx_chains_num = priv->hw_params.rx_chains_num;
407 u8 tx_chains_num = priv->hw_params.tx_chains_num;
408
409 ht_info->cap = 0;
410 memset(&ht_info->mcs, 0, sizeof(ht_info->mcs));
411
412 ht_info->ht_supported = true;
413
414 if (priv->cfg->ht_greenfield_support)
415 ht_info->cap |= IEEE80211_HT_CAP_GRN_FLD;
416 ht_info->cap |= IEEE80211_HT_CAP_SGI_20;
417 ht_info->cap |= (IEEE80211_HT_CAP_SM_PS &
418 (WLAN_HT_CAP_SM_PS_DISABLED << 2));
419
420 max_bit_rate = MAX_BIT_RATE_20_MHZ;
421 if (priv->hw_params.ht40_channel & BIT(band)) {
422 ht_info->cap |= IEEE80211_HT_CAP_SUP_WIDTH_20_40;
423 ht_info->cap |= IEEE80211_HT_CAP_SGI_40;
424 ht_info->mcs.rx_mask[4] = 0x01;
425 max_bit_rate = MAX_BIT_RATE_40_MHZ;
426 }
427
428 if (priv->cfg->mod_params->amsdu_size_8K)
429 ht_info->cap |= IEEE80211_HT_CAP_MAX_AMSDU;
430
431 ht_info->ampdu_factor = CFG_HT_RX_AMPDU_FACTOR_DEF;
432 ht_info->ampdu_density = CFG_HT_MPDU_DENSITY_DEF;
433
434 ht_info->mcs.rx_mask[0] = 0xFF;
435 if (rx_chains_num >= 2)
436 ht_info->mcs.rx_mask[1] = 0xFF;
437 if (rx_chains_num >= 3)
438 ht_info->mcs.rx_mask[2] = 0xFF;
439
440 /* Highest supported Rx data rate */
441 max_bit_rate *= rx_chains_num;
442 WARN_ON(max_bit_rate & ~IEEE80211_HT_MCS_RX_HIGHEST_MASK);
443 ht_info->mcs.rx_highest = cpu_to_le16(max_bit_rate);
444
445 /* Tx MCS capabilities */
446 ht_info->mcs.tx_params = IEEE80211_HT_MCS_TX_DEFINED;
447 if (tx_chains_num != rx_chains_num) {
448 ht_info->mcs.tx_params |= IEEE80211_HT_MCS_TX_RX_DIFF;
449 ht_info->mcs.tx_params |= ((tx_chains_num - 1) <<
450 IEEE80211_HT_MCS_TX_MAX_STREAMS_SHIFT);
451 }
452 }
453
454 static void iwlcore_init_hw_rates(struct iwl_priv *priv,
455 struct ieee80211_rate *rates)
456 {
457 int i;
458
459 for (i = 0; i < IWL_RATE_COUNT_LEGACY; i++) {
460 rates[i].bitrate = iwl_rates[i].ieee * 5;
461 rates[i].hw_value = i; /* Rate scaling will work on indexes */
462 rates[i].hw_value_short = i;
463 rates[i].flags = 0;
464 if ((i >= IWL_FIRST_CCK_RATE) && (i <= IWL_LAST_CCK_RATE)) {
465 /*
466 * If CCK != 1M then set short preamble rate flag.
467 */
468 rates[i].flags |=
469 (iwl_rates[i].plcp == IWL_RATE_1M_PLCP) ?
470 0 : IEEE80211_RATE_SHORT_PREAMBLE;
471 }
472 }
473 }
474
475
476 /**
477 * iwlcore_init_geos - Initialize mac80211's geo/channel info based from eeprom
478 */
479 int iwlcore_init_geos(struct iwl_priv *priv)
480 {
481 struct iwl_channel_info *ch;
482 struct ieee80211_supported_band *sband;
483 struct ieee80211_channel *channels;
484 struct ieee80211_channel *geo_ch;
485 struct ieee80211_rate *rates;
486 int i = 0;
487
488 if (priv->bands[IEEE80211_BAND_2GHZ].n_bitrates ||
489 priv->bands[IEEE80211_BAND_5GHZ].n_bitrates) {
490 IWL_DEBUG_INFO(priv, "Geography modes already initialized.\n");
491 set_bit(STATUS_GEO_CONFIGURED, &priv->status);
492 return 0;
493 }
494
495 channels = kzalloc(sizeof(struct ieee80211_channel) *
496 priv->channel_count, GFP_KERNEL);
497 if (!channels)
498 return -ENOMEM;
499
500 rates = kzalloc((sizeof(struct ieee80211_rate) * IWL_RATE_COUNT_LEGACY),
501 GFP_KERNEL);
502 if (!rates) {
503 kfree(channels);
504 return -ENOMEM;
505 }
506
507 /* 5.2GHz channels start after the 2.4GHz channels */
508 sband = &priv->bands[IEEE80211_BAND_5GHZ];
509 sband->channels = &channels[ARRAY_SIZE(iwl_eeprom_band_1)];
510 /* just OFDM */
511 sband->bitrates = &rates[IWL_FIRST_OFDM_RATE];
512 sband->n_bitrates = IWL_RATE_COUNT_LEGACY - IWL_FIRST_OFDM_RATE;
513
514 if (priv->cfg->sku & IWL_SKU_N)
515 iwlcore_init_ht_hw_capab(priv, &sband->ht_cap,
516 IEEE80211_BAND_5GHZ);
517
518 sband = &priv->bands[IEEE80211_BAND_2GHZ];
519 sband->channels = channels;
520 /* OFDM & CCK */
521 sband->bitrates = rates;
522 sband->n_bitrates = IWL_RATE_COUNT_LEGACY;
523
524 if (priv->cfg->sku & IWL_SKU_N)
525 iwlcore_init_ht_hw_capab(priv, &sband->ht_cap,
526 IEEE80211_BAND_2GHZ);
527
528 priv->ieee_channels = channels;
529 priv->ieee_rates = rates;
530
531 for (i = 0; i < priv->channel_count; i++) {
532 ch = &priv->channel_info[i];
533
534 /* FIXME: might be removed if scan is OK */
535 if (!is_channel_valid(ch))
536 continue;
537
538 if (is_channel_a_band(ch))
539 sband = &priv->bands[IEEE80211_BAND_5GHZ];
540 else
541 sband = &priv->bands[IEEE80211_BAND_2GHZ];
542
543 geo_ch = &sband->channels[sband->n_channels++];
544
545 geo_ch->center_freq =
546 ieee80211_channel_to_frequency(ch->channel);
547 geo_ch->max_power = ch->max_power_avg;
548 geo_ch->max_antenna_gain = 0xff;
549 geo_ch->hw_value = ch->channel;
550
551 if (is_channel_valid(ch)) {
552 if (!(ch->flags & EEPROM_CHANNEL_IBSS))
553 geo_ch->flags |= IEEE80211_CHAN_NO_IBSS;
554
555 if (!(ch->flags & EEPROM_CHANNEL_ACTIVE))
556 geo_ch->flags |= IEEE80211_CHAN_PASSIVE_SCAN;
557
558 if (ch->flags & EEPROM_CHANNEL_RADAR)
559 geo_ch->flags |= IEEE80211_CHAN_RADAR;
560
561 geo_ch->flags |= ch->ht40_extension_channel;
562
563 if (ch->max_power_avg > priv->tx_power_device_lmt)
564 priv->tx_power_device_lmt = ch->max_power_avg;
565 } else {
566 geo_ch->flags |= IEEE80211_CHAN_DISABLED;
567 }
568
569 IWL_DEBUG_INFO(priv, "Channel %d Freq=%d[%sGHz] %s flag=0x%X\n",
570 ch->channel, geo_ch->center_freq,
571 is_channel_a_band(ch) ? "5.2" : "2.4",
572 geo_ch->flags & IEEE80211_CHAN_DISABLED ?
573 "restricted" : "valid",
574 geo_ch->flags);
575 }
576
577 if ((priv->bands[IEEE80211_BAND_5GHZ].n_channels == 0) &&
578 priv->cfg->sku & IWL_SKU_A) {
579 IWL_INFO(priv, "Incorrectly detected BG card as ABG. "
580 "Please send your PCI ID 0x%04X:0x%04X to maintainer.\n",
581 priv->pci_dev->device,
582 priv->pci_dev->subsystem_device);
583 priv->cfg->sku &= ~IWL_SKU_A;
584 }
585
586 IWL_INFO(priv, "Tunable channels: %d 802.11bg, %d 802.11a channels\n",
587 priv->bands[IEEE80211_BAND_2GHZ].n_channels,
588 priv->bands[IEEE80211_BAND_5GHZ].n_channels);
589
590 set_bit(STATUS_GEO_CONFIGURED, &priv->status);
591
592 return 0;
593 }
594 EXPORT_SYMBOL(iwlcore_init_geos);
595
596 /*
597 * iwlcore_free_geos - undo allocations in iwlcore_init_geos
598 */
599 void iwlcore_free_geos(struct iwl_priv *priv)
600 {
601 kfree(priv->ieee_channels);
602 kfree(priv->ieee_rates);
603 clear_bit(STATUS_GEO_CONFIGURED, &priv->status);
604 }
605 EXPORT_SYMBOL(iwlcore_free_geos);
606
607 static bool is_single_rx_stream(struct iwl_priv *priv)
608 {
609 return !priv->current_ht_config.is_ht ||
610 priv->current_ht_config.single_chain_sufficient;
611 }
612
613 static u8 iwl_is_channel_extension(struct iwl_priv *priv,
614 enum ieee80211_band band,
615 u16 channel, u8 extension_chan_offset)
616 {
617 const struct iwl_channel_info *ch_info;
618
619 ch_info = iwl_get_channel_info(priv, band, channel);
620 if (!is_channel_valid(ch_info))
621 return 0;
622
623 if (extension_chan_offset == IEEE80211_HT_PARAM_CHA_SEC_ABOVE)
624 return !(ch_info->ht40_extension_channel &
625 IEEE80211_CHAN_NO_HT40PLUS);
626 else if (extension_chan_offset == IEEE80211_HT_PARAM_CHA_SEC_BELOW)
627 return !(ch_info->ht40_extension_channel &
628 IEEE80211_CHAN_NO_HT40MINUS);
629
630 return 0;
631 }
632
633 u8 iwl_is_ht40_tx_allowed(struct iwl_priv *priv,
634 struct ieee80211_sta_ht_cap *sta_ht_inf)
635 {
636 struct iwl_ht_config *ht_conf = &priv->current_ht_config;
637
638 if (!ht_conf->is_ht || !ht_conf->is_40mhz)
639 return 0;
640
641 /* We do not check for IEEE80211_HT_CAP_SUP_WIDTH_20_40
642 * the bit will not set if it is pure 40MHz case
643 */
644 if (sta_ht_inf) {
645 if (!sta_ht_inf->ht_supported)
646 return 0;
647 }
648 #ifdef CONFIG_IWLWIFI_DEBUG
649 if (priv->disable_ht40)
650 return 0;
651 #endif
652 return iwl_is_channel_extension(priv, priv->band,
653 le16_to_cpu(priv->staging_rxon.channel),
654 ht_conf->extension_chan_offset);
655 }
656 EXPORT_SYMBOL(iwl_is_ht40_tx_allowed);
657
658 static u16 iwl_adjust_beacon_interval(u16 beacon_val, u16 max_beacon_val)
659 {
660 u16 new_val = 0;
661 u16 beacon_factor = 0;
662
663 beacon_factor = (beacon_val + max_beacon_val) / max_beacon_val;
664 new_val = beacon_val / beacon_factor;
665
666 if (!new_val)
667 new_val = max_beacon_val;
668
669 return new_val;
670 }
671
672 void iwl_setup_rxon_timing(struct iwl_priv *priv)
673 {
674 u64 tsf;
675 s32 interval_tm, rem;
676 unsigned long flags;
677 struct ieee80211_conf *conf = NULL;
678 u16 beacon_int;
679
680 conf = ieee80211_get_hw_conf(priv->hw);
681
682 spin_lock_irqsave(&priv->lock, flags);
683 priv->rxon_timing.timestamp = cpu_to_le64(priv->timestamp);
684 priv->rxon_timing.listen_interval = cpu_to_le16(conf->listen_interval);
685
686 if (priv->iw_mode == NL80211_IFTYPE_STATION) {
687 beacon_int = priv->beacon_int;
688 priv->rxon_timing.atim_window = 0;
689 } else {
690 beacon_int = priv->vif->bss_conf.beacon_int;
691
692 /* TODO: we need to get atim_window from upper stack
693 * for now we set to 0 */
694 priv->rxon_timing.atim_window = 0;
695 }
696
697 beacon_int = iwl_adjust_beacon_interval(beacon_int,
698 priv->hw_params.max_beacon_itrvl * 1024);
699 priv->rxon_timing.beacon_interval = cpu_to_le16(beacon_int);
700
701 tsf = priv->timestamp; /* tsf is modifed by do_div: copy it */
702 interval_tm = beacon_int * 1024;
703 rem = do_div(tsf, interval_tm);
704 priv->rxon_timing.beacon_init_val = cpu_to_le32(interval_tm - rem);
705
706 spin_unlock_irqrestore(&priv->lock, flags);
707 IWL_DEBUG_ASSOC(priv,
708 "beacon interval %d beacon timer %d beacon tim %d\n",
709 le16_to_cpu(priv->rxon_timing.beacon_interval),
710 le32_to_cpu(priv->rxon_timing.beacon_init_val),
711 le16_to_cpu(priv->rxon_timing.atim_window));
712 }
713 EXPORT_SYMBOL(iwl_setup_rxon_timing);
714
715 void iwl_set_rxon_hwcrypto(struct iwl_priv *priv, int hw_decrypt)
716 {
717 struct iwl_rxon_cmd *rxon = &priv->staging_rxon;
718
719 if (hw_decrypt)
720 rxon->filter_flags &= ~RXON_FILTER_DIS_DECRYPT_MSK;
721 else
722 rxon->filter_flags |= RXON_FILTER_DIS_DECRYPT_MSK;
723
724 }
725 EXPORT_SYMBOL(iwl_set_rxon_hwcrypto);
726
727 /**
728 * iwl_check_rxon_cmd - validate RXON structure is valid
729 *
730 * NOTE: This is really only useful during development and can eventually
731 * be #ifdef'd out once the driver is stable and folks aren't actively
732 * making changes
733 */
734 int iwl_check_rxon_cmd(struct iwl_priv *priv)
735 {
736 int error = 0;
737 int counter = 1;
738 struct iwl_rxon_cmd *rxon = &priv->staging_rxon;
739
740 if (rxon->flags & RXON_FLG_BAND_24G_MSK) {
741 error |= le32_to_cpu(rxon->flags &
742 (RXON_FLG_TGJ_NARROW_BAND_MSK |
743 RXON_FLG_RADAR_DETECT_MSK));
744 if (error)
745 IWL_WARN(priv, "check 24G fields %d | %d\n",
746 counter++, error);
747 } else {
748 error |= (rxon->flags & RXON_FLG_SHORT_SLOT_MSK) ?
749 0 : le32_to_cpu(RXON_FLG_SHORT_SLOT_MSK);
750 if (error)
751 IWL_WARN(priv, "check 52 fields %d | %d\n",
752 counter++, error);
753 error |= le32_to_cpu(rxon->flags & RXON_FLG_CCK_MSK);
754 if (error)
755 IWL_WARN(priv, "check 52 CCK %d | %d\n",
756 counter++, error);
757 }
758 error |= (rxon->node_addr[0] | rxon->bssid_addr[0]) & 0x1;
759 if (error)
760 IWL_WARN(priv, "check mac addr %d | %d\n", counter++, error);
761
762 /* make sure basic rates 6Mbps and 1Mbps are supported */
763 error |= (((rxon->ofdm_basic_rates & IWL_RATE_6M_MASK) == 0) &&
764 ((rxon->cck_basic_rates & IWL_RATE_1M_MASK) == 0));
765 if (error)
766 IWL_WARN(priv, "check basic rate %d | %d\n", counter++, error);
767
768 error |= (le16_to_cpu(rxon->assoc_id) > 2007);
769 if (error)
770 IWL_WARN(priv, "check assoc id %d | %d\n", counter++, error);
771
772 error |= ((rxon->flags & (RXON_FLG_CCK_MSK | RXON_FLG_SHORT_SLOT_MSK))
773 == (RXON_FLG_CCK_MSK | RXON_FLG_SHORT_SLOT_MSK));
774 if (error)
775 IWL_WARN(priv, "check CCK and short slot %d | %d\n",
776 counter++, error);
777
778 error |= ((rxon->flags & (RXON_FLG_CCK_MSK | RXON_FLG_AUTO_DETECT_MSK))
779 == (RXON_FLG_CCK_MSK | RXON_FLG_AUTO_DETECT_MSK));
780 if (error)
781 IWL_WARN(priv, "check CCK & auto detect %d | %d\n",
782 counter++, error);
783
784 error |= ((rxon->flags & (RXON_FLG_AUTO_DETECT_MSK |
785 RXON_FLG_TGG_PROTECT_MSK)) == RXON_FLG_TGG_PROTECT_MSK);
786 if (error)
787 IWL_WARN(priv, "check TGG and auto detect %d | %d\n",
788 counter++, error);
789
790 if (error)
791 IWL_WARN(priv, "Tuning to channel %d\n",
792 le16_to_cpu(rxon->channel));
793
794 if (error) {
795 IWL_ERR(priv, "Not a valid iwl_rxon_assoc_cmd field values\n");
796 return -1;
797 }
798 return 0;
799 }
800 EXPORT_SYMBOL(iwl_check_rxon_cmd);
801
802 /**
803 * iwl_full_rxon_required - check if full RXON (vs RXON_ASSOC) cmd is needed
804 * @priv: staging_rxon is compared to active_rxon
805 *
806 * If the RXON structure is changing enough to require a new tune,
807 * or is clearing the RXON_FILTER_ASSOC_MSK, then return 1 to indicate that
808 * a new tune (full RXON command, rather than RXON_ASSOC cmd) is required.
809 */
810 int iwl_full_rxon_required(struct iwl_priv *priv)
811 {
812
813 /* These items are only settable from the full RXON command */
814 if (!(iwl_is_associated(priv)) ||
815 compare_ether_addr(priv->staging_rxon.bssid_addr,
816 priv->active_rxon.bssid_addr) ||
817 compare_ether_addr(priv->staging_rxon.node_addr,
818 priv->active_rxon.node_addr) ||
819 compare_ether_addr(priv->staging_rxon.wlap_bssid_addr,
820 priv->active_rxon.wlap_bssid_addr) ||
821 (priv->staging_rxon.dev_type != priv->active_rxon.dev_type) ||
822 (priv->staging_rxon.channel != priv->active_rxon.channel) ||
823 (priv->staging_rxon.air_propagation !=
824 priv->active_rxon.air_propagation) ||
825 (priv->staging_rxon.ofdm_ht_single_stream_basic_rates !=
826 priv->active_rxon.ofdm_ht_single_stream_basic_rates) ||
827 (priv->staging_rxon.ofdm_ht_dual_stream_basic_rates !=
828 priv->active_rxon.ofdm_ht_dual_stream_basic_rates) ||
829 (priv->staging_rxon.ofdm_ht_triple_stream_basic_rates !=
830 priv->active_rxon.ofdm_ht_triple_stream_basic_rates) ||
831 (priv->staging_rxon.assoc_id != priv->active_rxon.assoc_id))
832 return 1;
833
834 /* flags, filter_flags, ofdm_basic_rates, and cck_basic_rates can
835 * be updated with the RXON_ASSOC command -- however only some
836 * flag transitions are allowed using RXON_ASSOC */
837
838 /* Check if we are not switching bands */
839 if ((priv->staging_rxon.flags & RXON_FLG_BAND_24G_MSK) !=
840 (priv->active_rxon.flags & RXON_FLG_BAND_24G_MSK))
841 return 1;
842
843 /* Check if we are switching association toggle */
844 if ((priv->staging_rxon.filter_flags & RXON_FILTER_ASSOC_MSK) !=
845 (priv->active_rxon.filter_flags & RXON_FILTER_ASSOC_MSK))
846 return 1;
847
848 return 0;
849 }
850 EXPORT_SYMBOL(iwl_full_rxon_required);
851
852 u8 iwl_rate_get_lowest_plcp(struct iwl_priv *priv)
853 {
854 int i;
855 int rate_mask;
856
857 /* Set rate mask*/
858 if (priv->staging_rxon.flags & RXON_FLG_BAND_24G_MSK)
859 rate_mask = priv->active_rate_basic & IWL_CCK_RATES_MASK;
860 else
861 rate_mask = priv->active_rate_basic & IWL_OFDM_RATES_MASK;
862
863 /* Find lowest valid rate */
864 for (i = IWL_RATE_1M_INDEX; i != IWL_RATE_INVALID;
865 i = iwl_rates[i].next_ieee) {
866 if (rate_mask & (1 << i))
867 return iwl_rates[i].plcp;
868 }
869
870 /* No valid rate was found. Assign the lowest one */
871 if (priv->staging_rxon.flags & RXON_FLG_BAND_24G_MSK)
872 return IWL_RATE_1M_PLCP;
873 else
874 return IWL_RATE_6M_PLCP;
875 }
876 EXPORT_SYMBOL(iwl_rate_get_lowest_plcp);
877
878 void iwl_set_rxon_ht(struct iwl_priv *priv, struct iwl_ht_config *ht_conf)
879 {
880 struct iwl_rxon_cmd *rxon = &priv->staging_rxon;
881
882 if (!ht_conf->is_ht) {
883 rxon->flags &= ~(RXON_FLG_CHANNEL_MODE_MSK |
884 RXON_FLG_CTRL_CHANNEL_LOC_HI_MSK |
885 RXON_FLG_HT40_PROT_MSK |
886 RXON_FLG_HT_PROT_MSK);
887 return;
888 }
889
890 /* FIXME: if the definition of ht_protection changed, the "translation"
891 * will be needed for rxon->flags
892 */
893 rxon->flags |= cpu_to_le32(ht_conf->ht_protection << RXON_FLG_HT_OPERATING_MODE_POS);
894
895 /* Set up channel bandwidth:
896 * 20 MHz only, 20/40 mixed or pure 40 if ht40 ok */
897 /* clear the HT channel mode before set the mode */
898 rxon->flags &= ~(RXON_FLG_CHANNEL_MODE_MSK |
899 RXON_FLG_CTRL_CHANNEL_LOC_HI_MSK);
900 if (iwl_is_ht40_tx_allowed(priv, NULL)) {
901 /* pure ht40 */
902 if (ht_conf->ht_protection == IEEE80211_HT_OP_MODE_PROTECTION_20MHZ) {
903 rxon->flags |= RXON_FLG_CHANNEL_MODE_PURE_40;
904 /* Note: control channel is opposite of extension channel */
905 switch (ht_conf->extension_chan_offset) {
906 case IEEE80211_HT_PARAM_CHA_SEC_ABOVE:
907 rxon->flags &= ~RXON_FLG_CTRL_CHANNEL_LOC_HI_MSK;
908 break;
909 case IEEE80211_HT_PARAM_CHA_SEC_BELOW:
910 rxon->flags |= RXON_FLG_CTRL_CHANNEL_LOC_HI_MSK;
911 break;
912 }
913 } else {
914 /* Note: control channel is opposite of extension channel */
915 switch (ht_conf->extension_chan_offset) {
916 case IEEE80211_HT_PARAM_CHA_SEC_ABOVE:
917 rxon->flags &= ~(RXON_FLG_CTRL_CHANNEL_LOC_HI_MSK);
918 rxon->flags |= RXON_FLG_CHANNEL_MODE_MIXED;
919 break;
920 case IEEE80211_HT_PARAM_CHA_SEC_BELOW:
921 rxon->flags |= RXON_FLG_CTRL_CHANNEL_LOC_HI_MSK;
922 rxon->flags |= RXON_FLG_CHANNEL_MODE_MIXED;
923 break;
924 case IEEE80211_HT_PARAM_CHA_SEC_NONE:
925 default:
926 /* channel location only valid if in Mixed mode */
927 IWL_ERR(priv, "invalid extension channel offset\n");
928 break;
929 }
930 }
931 } else {
932 rxon->flags |= RXON_FLG_CHANNEL_MODE_LEGACY;
933 }
934
935 if (priv->cfg->ops->hcmd->set_rxon_chain)
936 priv->cfg->ops->hcmd->set_rxon_chain(priv);
937
938 IWL_DEBUG_ASSOC(priv, "rxon flags 0x%X operation mode :0x%X "
939 "extension channel offset 0x%x\n",
940 le32_to_cpu(rxon->flags), ht_conf->ht_protection,
941 ht_conf->extension_chan_offset);
942 return;
943 }
944 EXPORT_SYMBOL(iwl_set_rxon_ht);
945
946 #define IWL_NUM_RX_CHAINS_MULTIPLE 3
947 #define IWL_NUM_RX_CHAINS_SINGLE 2
948 #define IWL_NUM_IDLE_CHAINS_DUAL 2
949 #define IWL_NUM_IDLE_CHAINS_SINGLE 1
950
951 /*
952 * Determine how many receiver/antenna chains to use.
953 *
954 * More provides better reception via diversity. Fewer saves power
955 * at the expense of throughput, but only when not in powersave to
956 * start with.
957 *
958 * MIMO (dual stream) requires at least 2, but works better with 3.
959 * This does not determine *which* chains to use, just how many.
960 */
961 static int iwl_get_active_rx_chain_count(struct iwl_priv *priv)
962 {
963 /* # of Rx chains to use when expecting MIMO. */
964 if (is_single_rx_stream(priv))
965 return IWL_NUM_RX_CHAINS_SINGLE;
966 else
967 return IWL_NUM_RX_CHAINS_MULTIPLE;
968 }
969
970 /*
971 * When we are in power saving, there's no difference between
972 * using multiple chains or just a single chain, but due to the
973 * lack of SM PS we lose a lot of throughput if we use just a
974 * single chain.
975 *
976 * Therefore, use the active count here (which will use multiple
977 * chains unless connected to a legacy AP).
978 */
979 static int iwl_get_idle_rx_chain_count(struct iwl_priv *priv, int active_cnt)
980 {
981 return active_cnt;
982 }
983
984 /* up to 4 chains */
985 static u8 iwl_count_chain_bitmap(u32 chain_bitmap)
986 {
987 u8 res;
988 res = (chain_bitmap & BIT(0)) >> 0;
989 res += (chain_bitmap & BIT(1)) >> 1;
990 res += (chain_bitmap & BIT(2)) >> 2;
991 res += (chain_bitmap & BIT(3)) >> 3;
992 return res;
993 }
994
995 /**
996 * iwl_is_monitor_mode - Determine if interface in monitor mode
997 *
998 * priv->iw_mode is set in add_interface, but add_interface is
999 * never called for monitor mode. The only way mac80211 informs us about
1000 * monitor mode is through configuring filters (call to configure_filter).
1001 */
1002 bool iwl_is_monitor_mode(struct iwl_priv *priv)
1003 {
1004 return !!(priv->staging_rxon.filter_flags & RXON_FILTER_PROMISC_MSK);
1005 }
1006 EXPORT_SYMBOL(iwl_is_monitor_mode);
1007
1008 /**
1009 * iwl_set_rxon_chain - Set up Rx chain usage in "staging" RXON image
1010 *
1011 * Selects how many and which Rx receivers/antennas/chains to use.
1012 * This should not be used for scan command ... it puts data in wrong place.
1013 */
1014 void iwl_set_rxon_chain(struct iwl_priv *priv)
1015 {
1016 bool is_single = is_single_rx_stream(priv);
1017 bool is_cam = !test_bit(STATUS_POWER_PMI, &priv->status);
1018 u8 idle_rx_cnt, active_rx_cnt, valid_rx_cnt;
1019 u32 active_chains;
1020 u16 rx_chain;
1021
1022 /* Tell uCode which antennas are actually connected.
1023 * Before first association, we assume all antennas are connected.
1024 * Just after first association, iwl_chain_noise_calibration()
1025 * checks which antennas actually *are* connected. */
1026 if (priv->chain_noise_data.active_chains)
1027 active_chains = priv->chain_noise_data.active_chains;
1028 else
1029 active_chains = priv->hw_params.valid_rx_ant;
1030
1031 rx_chain = active_chains << RXON_RX_CHAIN_VALID_POS;
1032
1033 /* How many receivers should we use? */
1034 active_rx_cnt = iwl_get_active_rx_chain_count(priv);
1035 idle_rx_cnt = iwl_get_idle_rx_chain_count(priv, active_rx_cnt);
1036
1037
1038 /* correct rx chain count according hw settings
1039 * and chain noise calibration
1040 */
1041 valid_rx_cnt = iwl_count_chain_bitmap(active_chains);
1042 if (valid_rx_cnt < active_rx_cnt)
1043 active_rx_cnt = valid_rx_cnt;
1044
1045 if (valid_rx_cnt < idle_rx_cnt)
1046 idle_rx_cnt = valid_rx_cnt;
1047
1048 rx_chain |= active_rx_cnt << RXON_RX_CHAIN_MIMO_CNT_POS;
1049 rx_chain |= idle_rx_cnt << RXON_RX_CHAIN_CNT_POS;
1050
1051 /* copied from 'iwl_bg_request_scan()' */
1052 /* Force use of chains B and C (0x6) for Rx for 4965
1053 * Avoid A (0x1) because of its off-channel reception on A-band.
1054 * MIMO is not used here, but value is required */
1055 if (iwl_is_monitor_mode(priv) &&
1056 !(priv->staging_rxon.flags & RXON_FLG_BAND_24G_MSK) &&
1057 ((priv->hw_rev & CSR_HW_REV_TYPE_MSK) == CSR_HW_REV_TYPE_4965)) {
1058 rx_chain = ANT_ABC << RXON_RX_CHAIN_VALID_POS;
1059 rx_chain |= ANT_BC << RXON_RX_CHAIN_FORCE_SEL_POS;
1060 rx_chain |= ANT_ABC << RXON_RX_CHAIN_FORCE_MIMO_SEL_POS;
1061 rx_chain |= 0x1 << RXON_RX_CHAIN_DRIVER_FORCE_POS;
1062 }
1063
1064 priv->staging_rxon.rx_chain = cpu_to_le16(rx_chain);
1065
1066 if (!is_single && (active_rx_cnt >= IWL_NUM_RX_CHAINS_SINGLE) && is_cam)
1067 priv->staging_rxon.rx_chain |= RXON_RX_CHAIN_MIMO_FORCE_MSK;
1068 else
1069 priv->staging_rxon.rx_chain &= ~RXON_RX_CHAIN_MIMO_FORCE_MSK;
1070
1071 IWL_DEBUG_ASSOC(priv, "rx_chain=0x%X active=%d idle=%d\n",
1072 priv->staging_rxon.rx_chain,
1073 active_rx_cnt, idle_rx_cnt);
1074
1075 WARN_ON(active_rx_cnt == 0 || idle_rx_cnt == 0 ||
1076 active_rx_cnt < idle_rx_cnt);
1077 }
1078 EXPORT_SYMBOL(iwl_set_rxon_chain);
1079
1080 /**
1081 * iwl_set_rxon_channel - Set the phymode and channel values in staging RXON
1082 * @phymode: MODE_IEEE80211A sets to 5.2GHz; all else set to 2.4GHz
1083 * @channel: Any channel valid for the requested phymode
1084
1085 * In addition to setting the staging RXON, priv->phymode is also set.
1086 *
1087 * NOTE: Does not commit to the hardware; it sets appropriate bit fields
1088 * in the staging RXON flag structure based on the phymode
1089 */
1090 int iwl_set_rxon_channel(struct iwl_priv *priv, struct ieee80211_channel *ch)
1091 {
1092 enum ieee80211_band band = ch->band;
1093 u16 channel = ieee80211_frequency_to_channel(ch->center_freq);
1094
1095 if (!iwl_get_channel_info(priv, band, channel)) {
1096 IWL_DEBUG_INFO(priv, "Could not set channel to %d [%d]\n",
1097 channel, band);
1098 return -EINVAL;
1099 }
1100
1101 if ((le16_to_cpu(priv->staging_rxon.channel) == channel) &&
1102 (priv->band == band))
1103 return 0;
1104
1105 priv->staging_rxon.channel = cpu_to_le16(channel);
1106 if (band == IEEE80211_BAND_5GHZ)
1107 priv->staging_rxon.flags &= ~RXON_FLG_BAND_24G_MSK;
1108 else
1109 priv->staging_rxon.flags |= RXON_FLG_BAND_24G_MSK;
1110
1111 priv->band = band;
1112
1113 IWL_DEBUG_INFO(priv, "Staging channel set to %d [%d]\n", channel, band);
1114
1115 return 0;
1116 }
1117 EXPORT_SYMBOL(iwl_set_rxon_channel);
1118
1119 void iwl_set_flags_for_band(struct iwl_priv *priv,
1120 enum ieee80211_band band)
1121 {
1122 if (band == IEEE80211_BAND_5GHZ) {
1123 priv->staging_rxon.flags &=
1124 ~(RXON_FLG_BAND_24G_MSK | RXON_FLG_AUTO_DETECT_MSK
1125 | RXON_FLG_CCK_MSK);
1126 priv->staging_rxon.flags |= RXON_FLG_SHORT_SLOT_MSK;
1127 } else {
1128 /* Copied from iwl_post_associate() */
1129 if (priv->assoc_capability & WLAN_CAPABILITY_SHORT_SLOT_TIME)
1130 priv->staging_rxon.flags |= RXON_FLG_SHORT_SLOT_MSK;
1131 else
1132 priv->staging_rxon.flags &= ~RXON_FLG_SHORT_SLOT_MSK;
1133
1134 if (priv->iw_mode == NL80211_IFTYPE_ADHOC)
1135 priv->staging_rxon.flags &= ~RXON_FLG_SHORT_SLOT_MSK;
1136
1137 priv->staging_rxon.flags |= RXON_FLG_BAND_24G_MSK;
1138 priv->staging_rxon.flags |= RXON_FLG_AUTO_DETECT_MSK;
1139 priv->staging_rxon.flags &= ~RXON_FLG_CCK_MSK;
1140 }
1141 }
1142
1143 /*
1144 * initialize rxon structure with default values from eeprom
1145 */
1146 void iwl_connection_init_rx_config(struct iwl_priv *priv, int mode)
1147 {
1148 const struct iwl_channel_info *ch_info;
1149
1150 memset(&priv->staging_rxon, 0, sizeof(priv->staging_rxon));
1151
1152 switch (mode) {
1153 case NL80211_IFTYPE_AP:
1154 priv->staging_rxon.dev_type = RXON_DEV_TYPE_AP;
1155 break;
1156
1157 case NL80211_IFTYPE_STATION:
1158 priv->staging_rxon.dev_type = RXON_DEV_TYPE_ESS;
1159 priv->staging_rxon.filter_flags = RXON_FILTER_ACCEPT_GRP_MSK;
1160 break;
1161
1162 case NL80211_IFTYPE_ADHOC:
1163 priv->staging_rxon.dev_type = RXON_DEV_TYPE_IBSS;
1164 priv->staging_rxon.flags = RXON_FLG_SHORT_PREAMBLE_MSK;
1165 priv->staging_rxon.filter_flags = RXON_FILTER_BCON_AWARE_MSK |
1166 RXON_FILTER_ACCEPT_GRP_MSK;
1167 break;
1168
1169 default:
1170 IWL_ERR(priv, "Unsupported interface type %d\n", mode);
1171 break;
1172 }
1173
1174 #if 0
1175 /* TODO: Figure out when short_preamble would be set and cache from
1176 * that */
1177 if (!hw_to_local(priv->hw)->short_preamble)
1178 priv->staging_rxon.flags &= ~RXON_FLG_SHORT_PREAMBLE_MSK;
1179 else
1180 priv->staging_rxon.flags |= RXON_FLG_SHORT_PREAMBLE_MSK;
1181 #endif
1182
1183 ch_info = iwl_get_channel_info(priv, priv->band,
1184 le16_to_cpu(priv->active_rxon.channel));
1185
1186 if (!ch_info)
1187 ch_info = &priv->channel_info[0];
1188
1189 /*
1190 * in some case A channels are all non IBSS
1191 * in this case force B/G channel
1192 */
1193 if ((priv->iw_mode == NL80211_IFTYPE_ADHOC) &&
1194 !(is_channel_ibss(ch_info)))
1195 ch_info = &priv->channel_info[0];
1196
1197 priv->staging_rxon.channel = cpu_to_le16(ch_info->channel);
1198 priv->band = ch_info->band;
1199
1200 iwl_set_flags_for_band(priv, priv->band);
1201
1202 priv->staging_rxon.ofdm_basic_rates =
1203 (IWL_OFDM_RATES_MASK >> IWL_FIRST_OFDM_RATE) & 0xFF;
1204 priv->staging_rxon.cck_basic_rates =
1205 (IWL_CCK_RATES_MASK >> IWL_FIRST_CCK_RATE) & 0xF;
1206
1207 /* clear both MIX and PURE40 mode flag */
1208 priv->staging_rxon.flags &= ~(RXON_FLG_CHANNEL_MODE_MIXED |
1209 RXON_FLG_CHANNEL_MODE_PURE_40);
1210 memcpy(priv->staging_rxon.node_addr, priv->mac_addr, ETH_ALEN);
1211 memcpy(priv->staging_rxon.wlap_bssid_addr, priv->mac_addr, ETH_ALEN);
1212 priv->staging_rxon.ofdm_ht_single_stream_basic_rates = 0xff;
1213 priv->staging_rxon.ofdm_ht_dual_stream_basic_rates = 0xff;
1214 priv->staging_rxon.ofdm_ht_triple_stream_basic_rates = 0xff;
1215 }
1216 EXPORT_SYMBOL(iwl_connection_init_rx_config);
1217
1218 static void iwl_set_rate(struct iwl_priv *priv)
1219 {
1220 const struct ieee80211_supported_band *hw = NULL;
1221 struct ieee80211_rate *rate;
1222 int i;
1223
1224 hw = iwl_get_hw_mode(priv, priv->band);
1225 if (!hw) {
1226 IWL_ERR(priv, "Failed to set rate: unable to get hw mode\n");
1227 return;
1228 }
1229
1230 priv->active_rate = 0;
1231 priv->active_rate_basic = 0;
1232
1233 for (i = 0; i < hw->n_bitrates; i++) {
1234 rate = &(hw->bitrates[i]);
1235 if (rate->hw_value < IWL_RATE_COUNT_LEGACY)
1236 priv->active_rate |= (1 << rate->hw_value);
1237 }
1238
1239 IWL_DEBUG_RATE(priv, "Set active_rate = %0x, active_rate_basic = %0x\n",
1240 priv->active_rate, priv->active_rate_basic);
1241
1242 /*
1243 * If a basic rate is configured, then use it (adding IWL_RATE_1M_MASK)
1244 * otherwise set it to the default of all CCK rates and 6, 12, 24 for
1245 * OFDM
1246 */
1247 if (priv->active_rate_basic & IWL_CCK_BASIC_RATES_MASK)
1248 priv->staging_rxon.cck_basic_rates =
1249 ((priv->active_rate_basic &
1250 IWL_CCK_RATES_MASK) >> IWL_FIRST_CCK_RATE) & 0xF;
1251 else
1252 priv->staging_rxon.cck_basic_rates =
1253 (IWL_CCK_BASIC_RATES_MASK >> IWL_FIRST_CCK_RATE) & 0xF;
1254
1255 if (priv->active_rate_basic & IWL_OFDM_BASIC_RATES_MASK)
1256 priv->staging_rxon.ofdm_basic_rates =
1257 ((priv->active_rate_basic &
1258 (IWL_OFDM_BASIC_RATES_MASK | IWL_RATE_6M_MASK)) >>
1259 IWL_FIRST_OFDM_RATE) & 0xFF;
1260 else
1261 priv->staging_rxon.ofdm_basic_rates =
1262 (IWL_OFDM_BASIC_RATES_MASK >> IWL_FIRST_OFDM_RATE) & 0xFF;
1263 }
1264
1265 void iwl_rx_csa(struct iwl_priv *priv, struct iwl_rx_mem_buffer *rxb)
1266 {
1267 struct iwl_rx_packet *pkt = (struct iwl_rx_packet *)rxb->skb->data;
1268 struct iwl_rxon_cmd *rxon = (void *)&priv->active_rxon;
1269 struct iwl_csa_notification *csa = &(pkt->u.csa_notif);
1270 IWL_DEBUG_11H(priv, "CSA notif: channel %d, status %d\n",
1271 le16_to_cpu(csa->channel), le32_to_cpu(csa->status));
1272 rxon->channel = csa->channel;
1273 priv->staging_rxon.channel = csa->channel;
1274 }
1275 EXPORT_SYMBOL(iwl_rx_csa);
1276
1277 #ifdef CONFIG_IWLWIFI_DEBUG
1278 static void iwl_print_rx_config_cmd(struct iwl_priv *priv)
1279 {
1280 struct iwl_rxon_cmd *rxon = &priv->staging_rxon;
1281
1282 IWL_DEBUG_RADIO(priv, "RX CONFIG:\n");
1283 iwl_print_hex_dump(priv, IWL_DL_RADIO, (u8 *) rxon, sizeof(*rxon));
1284 IWL_DEBUG_RADIO(priv, "u16 channel: 0x%x\n", le16_to_cpu(rxon->channel));
1285 IWL_DEBUG_RADIO(priv, "u32 flags: 0x%08X\n", le32_to_cpu(rxon->flags));
1286 IWL_DEBUG_RADIO(priv, "u32 filter_flags: 0x%08x\n",
1287 le32_to_cpu(rxon->filter_flags));
1288 IWL_DEBUG_RADIO(priv, "u8 dev_type: 0x%x\n", rxon->dev_type);
1289 IWL_DEBUG_RADIO(priv, "u8 ofdm_basic_rates: 0x%02x\n",
1290 rxon->ofdm_basic_rates);
1291 IWL_DEBUG_RADIO(priv, "u8 cck_basic_rates: 0x%02x\n", rxon->cck_basic_rates);
1292 IWL_DEBUG_RADIO(priv, "u8[6] node_addr: %pM\n", rxon->node_addr);
1293 IWL_DEBUG_RADIO(priv, "u8[6] bssid_addr: %pM\n", rxon->bssid_addr);
1294 IWL_DEBUG_RADIO(priv, "u16 assoc_id: 0x%x\n", le16_to_cpu(rxon->assoc_id));
1295 }
1296 #endif
1297 /**
1298 * iwl_irq_handle_error - called for HW or SW error interrupt from card
1299 */
1300 void iwl_irq_handle_error(struct iwl_priv *priv)
1301 {
1302 /* Set the FW error flag -- cleared on iwl_down */
1303 set_bit(STATUS_FW_ERROR, &priv->status);
1304
1305 /* Cancel currently queued command. */
1306 clear_bit(STATUS_HCMD_ACTIVE, &priv->status);
1307
1308 #ifdef CONFIG_IWLWIFI_DEBUG
1309 if (iwl_get_debug_level(priv) & IWL_DL_FW_ERRORS) {
1310 priv->cfg->ops->lib->dump_nic_error_log(priv);
1311 priv->cfg->ops->lib->dump_nic_event_log(priv);
1312 iwl_print_rx_config_cmd(priv);
1313 }
1314 #endif
1315
1316 wake_up_interruptible(&priv->wait_command_queue);
1317
1318 /* Keep the restart process from trying to send host
1319 * commands by clearing the INIT status bit */
1320 clear_bit(STATUS_READY, &priv->status);
1321
1322 if (!test_bit(STATUS_EXIT_PENDING, &priv->status)) {
1323 IWL_DEBUG(priv, IWL_DL_FW_ERRORS,
1324 "Restarting adapter due to uCode error.\n");
1325
1326 if (priv->cfg->mod_params->restart_fw)
1327 queue_work(priv->workqueue, &priv->restart);
1328 }
1329 }
1330 EXPORT_SYMBOL(iwl_irq_handle_error);
1331
1332 void iwl_configure_filter(struct ieee80211_hw *hw,
1333 unsigned int changed_flags,
1334 unsigned int *total_flags,
1335 u64 multicast)
1336 {
1337 struct iwl_priv *priv = hw->priv;
1338 __le32 *filter_flags = &priv->staging_rxon.filter_flags;
1339
1340 IWL_DEBUG_MAC80211(priv, "Enter: changed: 0x%x, total: 0x%x\n",
1341 changed_flags, *total_flags);
1342
1343 if (changed_flags & (FIF_OTHER_BSS | FIF_PROMISC_IN_BSS)) {
1344 if (*total_flags & (FIF_OTHER_BSS | FIF_PROMISC_IN_BSS))
1345 *filter_flags |= RXON_FILTER_PROMISC_MSK;
1346 else
1347 *filter_flags &= ~RXON_FILTER_PROMISC_MSK;
1348 }
1349 if (changed_flags & FIF_ALLMULTI) {
1350 if (*total_flags & FIF_ALLMULTI)
1351 *filter_flags |= RXON_FILTER_ACCEPT_GRP_MSK;
1352 else
1353 *filter_flags &= ~RXON_FILTER_ACCEPT_GRP_MSK;
1354 }
1355 if (changed_flags & FIF_CONTROL) {
1356 if (*total_flags & FIF_CONTROL)
1357 *filter_flags |= RXON_FILTER_CTL2HOST_MSK;
1358 else
1359 *filter_flags &= ~RXON_FILTER_CTL2HOST_MSK;
1360 }
1361 if (changed_flags & FIF_BCN_PRBRESP_PROMISC) {
1362 if (*total_flags & FIF_BCN_PRBRESP_PROMISC)
1363 *filter_flags |= RXON_FILTER_BCON_AWARE_MSK;
1364 else
1365 *filter_flags &= ~RXON_FILTER_BCON_AWARE_MSK;
1366 }
1367
1368 /* We avoid iwl_commit_rxon here to commit the new filter flags
1369 * since mac80211 will call ieee80211_hw_config immediately.
1370 * (mc_list is not supported at this time). Otherwise, we need to
1371 * queue a background iwl_commit_rxon work.
1372 */
1373
1374 *total_flags &= FIF_OTHER_BSS | FIF_ALLMULTI | FIF_PROMISC_IN_BSS |
1375 FIF_BCN_PRBRESP_PROMISC | FIF_CONTROL;
1376 }
1377 EXPORT_SYMBOL(iwl_configure_filter);
1378
1379 int iwl_setup_mac(struct iwl_priv *priv)
1380 {
1381 int ret;
1382 struct ieee80211_hw *hw = priv->hw;
1383 hw->rate_control_algorithm = "iwl-agn-rs";
1384
1385 /* Tell mac80211 our characteristics */
1386 hw->flags = IEEE80211_HW_SIGNAL_DBM |
1387 IEEE80211_HW_NOISE_DBM |
1388 IEEE80211_HW_AMPDU_AGGREGATION |
1389 IEEE80211_HW_SPECTRUM_MGMT;
1390
1391 if (!priv->cfg->broken_powersave)
1392 hw->flags |= IEEE80211_HW_SUPPORTS_PS |
1393 IEEE80211_HW_SUPPORTS_DYNAMIC_PS;
1394
1395 hw->wiphy->interface_modes =
1396 BIT(NL80211_IFTYPE_STATION) |
1397 BIT(NL80211_IFTYPE_ADHOC);
1398
1399 hw->wiphy->custom_regulatory = true;
1400
1401 /* Firmware does not support this */
1402 hw->wiphy->disable_beacon_hints = true;
1403
1404 /*
1405 * For now, disable PS by default because it affects
1406 * RX performance significantly.
1407 */
1408 hw->wiphy->ps_default = false;
1409
1410 hw->wiphy->max_scan_ssids = PROBE_OPTION_MAX;
1411 /* we create the 802.11 header and a zero-length SSID element */
1412 hw->wiphy->max_scan_ie_len = IWL_MAX_PROBE_REQUEST - 24 - 2;
1413
1414 /* Default value; 4 EDCA QOS priorities */
1415 hw->queues = 4;
1416
1417 hw->max_listen_interval = IWL_CONN_MAX_LISTEN_INTERVAL;
1418
1419 if (priv->bands[IEEE80211_BAND_2GHZ].n_channels)
1420 priv->hw->wiphy->bands[IEEE80211_BAND_2GHZ] =
1421 &priv->bands[IEEE80211_BAND_2GHZ];
1422 if (priv->bands[IEEE80211_BAND_5GHZ].n_channels)
1423 priv->hw->wiphy->bands[IEEE80211_BAND_5GHZ] =
1424 &priv->bands[IEEE80211_BAND_5GHZ];
1425
1426 ret = ieee80211_register_hw(priv->hw);
1427 if (ret) {
1428 IWL_ERR(priv, "Failed to register hw (error %d)\n", ret);
1429 return ret;
1430 }
1431 priv->mac80211_registered = 1;
1432
1433 return 0;
1434 }
1435 EXPORT_SYMBOL(iwl_setup_mac);
1436
1437 int iwl_set_hw_params(struct iwl_priv *priv)
1438 {
1439 priv->hw_params.max_rxq_size = RX_QUEUE_SIZE;
1440 priv->hw_params.max_rxq_log = RX_QUEUE_SIZE_LOG;
1441 if (priv->cfg->mod_params->amsdu_size_8K)
1442 priv->hw_params.rx_buf_size = IWL_RX_BUF_SIZE_8K;
1443 else
1444 priv->hw_params.rx_buf_size = IWL_RX_BUF_SIZE_4K;
1445 priv->hw_params.max_pkt_size = priv->hw_params.rx_buf_size - 256;
1446
1447 priv->hw_params.max_beacon_itrvl = IWL_MAX_UCODE_BEACON_INTERVAL;
1448
1449 if (priv->cfg->mod_params->disable_11n)
1450 priv->cfg->sku &= ~IWL_SKU_N;
1451
1452 /* Device-specific setup */
1453 return priv->cfg->ops->lib->set_hw_params(priv);
1454 }
1455 EXPORT_SYMBOL(iwl_set_hw_params);
1456
1457 int iwl_init_drv(struct iwl_priv *priv)
1458 {
1459 int ret;
1460
1461 priv->ibss_beacon = NULL;
1462
1463 spin_lock_init(&priv->lock);
1464 spin_lock_init(&priv->sta_lock);
1465 spin_lock_init(&priv->hcmd_lock);
1466
1467 INIT_LIST_HEAD(&priv->free_frames);
1468
1469 mutex_init(&priv->mutex);
1470
1471 /* Clear the driver's (not device's) station table */
1472 iwl_clear_stations_table(priv);
1473
1474 priv->data_retry_limit = -1;
1475 priv->ieee_channels = NULL;
1476 priv->ieee_rates = NULL;
1477 priv->band = IEEE80211_BAND_2GHZ;
1478
1479 priv->iw_mode = NL80211_IFTYPE_STATION;
1480
1481 /* Choose which receivers/antennas to use */
1482 if (priv->cfg->ops->hcmd->set_rxon_chain)
1483 priv->cfg->ops->hcmd->set_rxon_chain(priv);
1484
1485 iwl_init_scan_params(priv);
1486
1487 iwl_reset_qos(priv);
1488
1489 priv->qos_data.qos_active = 0;
1490 priv->qos_data.qos_cap.val = 0;
1491
1492 priv->rates_mask = IWL_RATES_MASK;
1493 /* Set the tx_power_user_lmt to the lowest power level
1494 * this value will get overwritten by channel max power avg
1495 * from eeprom */
1496 priv->tx_power_user_lmt = IWL_TX_POWER_TARGET_POWER_MIN;
1497
1498 ret = iwl_init_channel_map(priv);
1499 if (ret) {
1500 IWL_ERR(priv, "initializing regulatory failed: %d\n", ret);
1501 goto err;
1502 }
1503
1504 ret = iwlcore_init_geos(priv);
1505 if (ret) {
1506 IWL_ERR(priv, "initializing geos failed: %d\n", ret);
1507 goto err_free_channel_map;
1508 }
1509 iwlcore_init_hw_rates(priv, priv->ieee_rates);
1510
1511 return 0;
1512
1513 err_free_channel_map:
1514 iwl_free_channel_map(priv);
1515 err:
1516 return ret;
1517 }
1518 EXPORT_SYMBOL(iwl_init_drv);
1519
1520 int iwl_set_tx_power(struct iwl_priv *priv, s8 tx_power, bool force)
1521 {
1522 int ret = 0;
1523 s8 prev_tx_power = priv->tx_power_user_lmt;
1524
1525 if (tx_power < IWL_TX_POWER_TARGET_POWER_MIN) {
1526 IWL_WARN(priv, "Requested user TXPOWER %d below lower limit %d.\n",
1527 tx_power,
1528 IWL_TX_POWER_TARGET_POWER_MIN);
1529 return -EINVAL;
1530 }
1531
1532 if (tx_power > priv->tx_power_device_lmt) {
1533 IWL_WARN(priv,
1534 "Requested user TXPOWER %d above upper limit %d.\n",
1535 tx_power, priv->tx_power_device_lmt);
1536 return -EINVAL;
1537 }
1538
1539 if (priv->tx_power_user_lmt != tx_power)
1540 force = true;
1541
1542 /* if nic is not up don't send command */
1543 if (iwl_is_ready_rf(priv)) {
1544 priv->tx_power_user_lmt = tx_power;
1545 if (force && priv->cfg->ops->lib->send_tx_power)
1546 ret = priv->cfg->ops->lib->send_tx_power(priv);
1547 else if (!priv->cfg->ops->lib->send_tx_power)
1548 ret = -EOPNOTSUPP;
1549 /*
1550 * if fail to set tx_power, restore the orig. tx power
1551 */
1552 if (ret)
1553 priv->tx_power_user_lmt = prev_tx_power;
1554 }
1555
1556 /*
1557 * Even this is an async host command, the command
1558 * will always report success from uCode
1559 * So once driver can placing the command into the queue
1560 * successfully, driver can use priv->tx_power_user_lmt
1561 * to reflect the current tx power
1562 */
1563 return ret;
1564 }
1565 EXPORT_SYMBOL(iwl_set_tx_power);
1566
1567 void iwl_uninit_drv(struct iwl_priv *priv)
1568 {
1569 iwl_calib_free_results(priv);
1570 iwlcore_free_geos(priv);
1571 iwl_free_channel_map(priv);
1572 kfree(priv->scan);
1573 }
1574 EXPORT_SYMBOL(iwl_uninit_drv);
1575
1576 #define ICT_COUNT (PAGE_SIZE/sizeof(u32))
1577
1578 /* Free dram table */
1579 void iwl_free_isr_ict(struct iwl_priv *priv)
1580 {
1581 if (priv->ict_tbl_vir) {
1582 pci_free_consistent(priv->pci_dev, (sizeof(u32) * ICT_COUNT) +
1583 PAGE_SIZE, priv->ict_tbl_vir,
1584 priv->ict_tbl_dma);
1585 priv->ict_tbl_vir = NULL;
1586 }
1587 }
1588 EXPORT_SYMBOL(iwl_free_isr_ict);
1589
1590
1591 /* allocate dram shared table it is a PAGE_SIZE aligned
1592 * also reset all data related to ICT table interrupt.
1593 */
1594 int iwl_alloc_isr_ict(struct iwl_priv *priv)
1595 {
1596
1597 if (priv->cfg->use_isr_legacy)
1598 return 0;
1599 /* allocate shrared data table */
1600 priv->ict_tbl_vir = pci_alloc_consistent(priv->pci_dev, (sizeof(u32) *
1601 ICT_COUNT) + PAGE_SIZE,
1602 &priv->ict_tbl_dma);
1603 if (!priv->ict_tbl_vir)
1604 return -ENOMEM;
1605
1606 /* align table to PAGE_SIZE boundry */
1607 priv->aligned_ict_tbl_dma = ALIGN(priv->ict_tbl_dma, PAGE_SIZE);
1608
1609 IWL_DEBUG_ISR(priv, "ict dma addr %Lx dma aligned %Lx diff %d\n",
1610 (unsigned long long)priv->ict_tbl_dma,
1611 (unsigned long long)priv->aligned_ict_tbl_dma,
1612 (int)(priv->aligned_ict_tbl_dma - priv->ict_tbl_dma));
1613
1614 priv->ict_tbl = priv->ict_tbl_vir +
1615 (priv->aligned_ict_tbl_dma - priv->ict_tbl_dma);
1616
1617 IWL_DEBUG_ISR(priv, "ict vir addr %p vir aligned %p diff %d\n",
1618 priv->ict_tbl, priv->ict_tbl_vir,
1619 (int)(priv->aligned_ict_tbl_dma - priv->ict_tbl_dma));
1620
1621 /* reset table and index to all 0 */
1622 memset(priv->ict_tbl_vir,0, (sizeof(u32) * ICT_COUNT) + PAGE_SIZE);
1623 priv->ict_index = 0;
1624
1625 /* add periodic RX interrupt */
1626 priv->inta_mask |= CSR_INT_BIT_RX_PERIODIC;
1627 return 0;
1628 }
1629 EXPORT_SYMBOL(iwl_alloc_isr_ict);
1630
1631 /* Device is going up inform it about using ICT interrupt table,
1632 * also we need to tell the driver to start using ICT interrupt.
1633 */
1634 int iwl_reset_ict(struct iwl_priv *priv)
1635 {
1636 u32 val;
1637 unsigned long flags;
1638
1639 if (!priv->ict_tbl_vir)
1640 return 0;
1641
1642 spin_lock_irqsave(&priv->lock, flags);
1643 iwl_disable_interrupts(priv);
1644
1645 memset(&priv->ict_tbl[0], 0, sizeof(u32) * ICT_COUNT);
1646
1647 val = priv->aligned_ict_tbl_dma >> PAGE_SHIFT;
1648
1649 val |= CSR_DRAM_INT_TBL_ENABLE;
1650 val |= CSR_DRAM_INIT_TBL_WRAP_CHECK;
1651
1652 IWL_DEBUG_ISR(priv, "CSR_DRAM_INT_TBL_REG =0x%X "
1653 "aligned dma address %Lx\n",
1654 val, (unsigned long long)priv->aligned_ict_tbl_dma);
1655
1656 iwl_write32(priv, CSR_DRAM_INT_TBL_REG, val);
1657 priv->use_ict = true;
1658 priv->ict_index = 0;
1659 iwl_write32(priv, CSR_INT, priv->inta_mask);
1660 iwl_enable_interrupts(priv);
1661 spin_unlock_irqrestore(&priv->lock, flags);
1662
1663 return 0;
1664 }
1665 EXPORT_SYMBOL(iwl_reset_ict);
1666
1667 /* Device is going down disable ict interrupt usage */
1668 void iwl_disable_ict(struct iwl_priv *priv)
1669 {
1670 unsigned long flags;
1671
1672 spin_lock_irqsave(&priv->lock, flags);
1673 priv->use_ict = false;
1674 spin_unlock_irqrestore(&priv->lock, flags);
1675 }
1676 EXPORT_SYMBOL(iwl_disable_ict);
1677
1678 /* interrupt handler using ict table, with this interrupt driver will
1679 * stop using INTA register to get device's interrupt, reading this register
1680 * is expensive, device will write interrupts in ICT dram table, increment
1681 * index then will fire interrupt to driver, driver will OR all ICT table
1682 * entries from current index up to table entry with 0 value. the result is
1683 * the interrupt we need to service, driver will set the entries back to 0 and
1684 * set index.
1685 */
1686 irqreturn_t iwl_isr_ict(int irq, void *data)
1687 {
1688 struct iwl_priv *priv = data;
1689 u32 inta, inta_mask;
1690 u32 val = 0;
1691
1692 if (!priv)
1693 return IRQ_NONE;
1694
1695 /* dram interrupt table not set yet,
1696 * use legacy interrupt.
1697 */
1698 if (!priv->use_ict)
1699 return iwl_isr(irq, data);
1700
1701 spin_lock(&priv->lock);
1702
1703 /* Disable (but don't clear!) interrupts here to avoid
1704 * back-to-back ISRs and sporadic interrupts from our NIC.
1705 * If we have something to service, the tasklet will re-enable ints.
1706 * If we *don't* have something, we'll re-enable before leaving here.
1707 */
1708 inta_mask = iwl_read32(priv, CSR_INT_MASK); /* just for debug */
1709 iwl_write32(priv, CSR_INT_MASK, 0x00000000);
1710
1711
1712 /* Ignore interrupt if there's nothing in NIC to service.
1713 * This may be due to IRQ shared with another device,
1714 * or due to sporadic interrupts thrown from our NIC. */
1715 if (!priv->ict_tbl[priv->ict_index]) {
1716 IWL_DEBUG_ISR(priv, "Ignore interrupt, inta == 0\n");
1717 goto none;
1718 }
1719
1720 /* read all entries that not 0 start with ict_index */
1721 while (priv->ict_tbl[priv->ict_index]) {
1722
1723 val |= le32_to_cpu(priv->ict_tbl[priv->ict_index]);
1724 IWL_DEBUG_ISR(priv, "ICT index %d value 0x%08X\n",
1725 priv->ict_index,
1726 le32_to_cpu(priv->ict_tbl[priv->ict_index]));
1727 priv->ict_tbl[priv->ict_index] = 0;
1728 priv->ict_index = iwl_queue_inc_wrap(priv->ict_index,
1729 ICT_COUNT);
1730
1731 }
1732
1733 /* We should not get this value, just ignore it. */
1734 if (val == 0xffffffff)
1735 val = 0;
1736
1737 inta = (0xff & val) | ((0xff00 & val) << 16);
1738 IWL_DEBUG_ISR(priv, "ISR inta 0x%08x, enabled 0x%08x ict 0x%08x\n",
1739 inta, inta_mask, val);
1740
1741 inta &= priv->inta_mask;
1742 priv->inta |= inta;
1743
1744 /* iwl_irq_tasklet() will service interrupts and re-enable them */
1745 if (likely(inta))
1746 tasklet_schedule(&priv->irq_tasklet);
1747 else if (test_bit(STATUS_INT_ENABLED, &priv->status) && !priv->inta) {
1748 /* Allow interrupt if was disabled by this handler and
1749 * no tasklet was schedules, We should not enable interrupt,
1750 * tasklet will enable it.
1751 */
1752 iwl_enable_interrupts(priv);
1753 }
1754
1755 spin_unlock(&priv->lock);
1756 return IRQ_HANDLED;
1757
1758 none:
1759 /* re-enable interrupts here since we don't have anything to service.
1760 * only Re-enable if disabled by irq.
1761 */
1762 if (test_bit(STATUS_INT_ENABLED, &priv->status) && !priv->inta)
1763 iwl_enable_interrupts(priv);
1764
1765 spin_unlock(&priv->lock);
1766 return IRQ_NONE;
1767 }
1768 EXPORT_SYMBOL(iwl_isr_ict);
1769
1770
1771 static irqreturn_t iwl_isr(int irq, void *data)
1772 {
1773 struct iwl_priv *priv = data;
1774 u32 inta, inta_mask;
1775 #ifdef CONFIG_IWLWIFI_DEBUG
1776 u32 inta_fh;
1777 #endif
1778 if (!priv)
1779 return IRQ_NONE;
1780
1781 spin_lock(&priv->lock);
1782
1783 /* Disable (but don't clear!) interrupts here to avoid
1784 * back-to-back ISRs and sporadic interrupts from our NIC.
1785 * If we have something to service, the tasklet will re-enable ints.
1786 * If we *don't* have something, we'll re-enable before leaving here. */
1787 inta_mask = iwl_read32(priv, CSR_INT_MASK); /* just for debug */
1788 iwl_write32(priv, CSR_INT_MASK, 0x00000000);
1789
1790 /* Discover which interrupts are active/pending */
1791 inta = iwl_read32(priv, CSR_INT);
1792
1793 /* Ignore interrupt if there's nothing in NIC to service.
1794 * This may be due to IRQ shared with another device,
1795 * or due to sporadic interrupts thrown from our NIC. */
1796 if (!inta) {
1797 IWL_DEBUG_ISR(priv, "Ignore interrupt, inta == 0\n");
1798 goto none;
1799 }
1800
1801 if ((inta == 0xFFFFFFFF) || ((inta & 0xFFFFFFF0) == 0xa5a5a5a0)) {
1802 /* Hardware disappeared. It might have already raised
1803 * an interrupt */
1804 IWL_WARN(priv, "HARDWARE GONE?? INTA == 0x%08x\n", inta);
1805 goto unplugged;
1806 }
1807
1808 #ifdef CONFIG_IWLWIFI_DEBUG
1809 if (iwl_get_debug_level(priv) & (IWL_DL_ISR)) {
1810 inta_fh = iwl_read32(priv, CSR_FH_INT_STATUS);
1811 IWL_DEBUG_ISR(priv, "ISR inta 0x%08x, enabled 0x%08x, "
1812 "fh 0x%08x\n", inta, inta_mask, inta_fh);
1813 }
1814 #endif
1815
1816 priv->inta |= inta;
1817 /* iwl_irq_tasklet() will service interrupts and re-enable them */
1818 if (likely(inta))
1819 tasklet_schedule(&priv->irq_tasklet);
1820 else if (test_bit(STATUS_INT_ENABLED, &priv->status) && !priv->inta)
1821 iwl_enable_interrupts(priv);
1822
1823 unplugged:
1824 spin_unlock(&priv->lock);
1825 return IRQ_HANDLED;
1826
1827 none:
1828 /* re-enable interrupts here since we don't have anything to service. */
1829 /* only Re-enable if diabled by irq and no schedules tasklet. */
1830 if (test_bit(STATUS_INT_ENABLED, &priv->status) && !priv->inta)
1831 iwl_enable_interrupts(priv);
1832
1833 spin_unlock(&priv->lock);
1834 return IRQ_NONE;
1835 }
1836
1837 irqreturn_t iwl_isr_legacy(int irq, void *data)
1838 {
1839 struct iwl_priv *priv = data;
1840 u32 inta, inta_mask;
1841 u32 inta_fh;
1842 if (!priv)
1843 return IRQ_NONE;
1844
1845 spin_lock(&priv->lock);
1846
1847 /* Disable (but don't clear!) interrupts here to avoid
1848 * back-to-back ISRs and sporadic interrupts from our NIC.
1849 * If we have something to service, the tasklet will re-enable ints.
1850 * If we *don't* have something, we'll re-enable before leaving here. */
1851 inta_mask = iwl_read32(priv, CSR_INT_MASK); /* just for debug */
1852 iwl_write32(priv, CSR_INT_MASK, 0x00000000);
1853
1854 /* Discover which interrupts are active/pending */
1855 inta = iwl_read32(priv, CSR_INT);
1856 inta_fh = iwl_read32(priv, CSR_FH_INT_STATUS);
1857
1858 /* Ignore interrupt if there's nothing in NIC to service.
1859 * This may be due to IRQ shared with another device,
1860 * or due to sporadic interrupts thrown from our NIC. */
1861 if (!inta && !inta_fh) {
1862 IWL_DEBUG_ISR(priv, "Ignore interrupt, inta == 0, inta_fh == 0\n");
1863 goto none;
1864 }
1865
1866 if ((inta == 0xFFFFFFFF) || ((inta & 0xFFFFFFF0) == 0xa5a5a5a0)) {
1867 /* Hardware disappeared. It might have already raised
1868 * an interrupt */
1869 IWL_WARN(priv, "HARDWARE GONE?? INTA == 0x%08x\n", inta);
1870 goto unplugged;
1871 }
1872
1873 IWL_DEBUG_ISR(priv, "ISR inta 0x%08x, enabled 0x%08x, fh 0x%08x\n",
1874 inta, inta_mask, inta_fh);
1875
1876 inta &= ~CSR_INT_BIT_SCD;
1877
1878 /* iwl_irq_tasklet() will service interrupts and re-enable them */
1879 if (likely(inta || inta_fh))
1880 tasklet_schedule(&priv->irq_tasklet);
1881
1882 unplugged:
1883 spin_unlock(&priv->lock);
1884 return IRQ_HANDLED;
1885
1886 none:
1887 /* re-enable interrupts here since we don't have anything to service. */
1888 /* only Re-enable if diabled by irq */
1889 if (test_bit(STATUS_INT_ENABLED, &priv->status))
1890 iwl_enable_interrupts(priv);
1891 spin_unlock(&priv->lock);
1892 return IRQ_NONE;
1893 }
1894 EXPORT_SYMBOL(iwl_isr_legacy);
1895
1896 int iwl_send_bt_config(struct iwl_priv *priv)
1897 {
1898 struct iwl_bt_cmd bt_cmd = {
1899 .flags = 3,
1900 .lead_time = 0xAA,
1901 .max_kill = 1,
1902 .kill_ack_mask = 0,
1903 .kill_cts_mask = 0,
1904 };
1905
1906 return iwl_send_cmd_pdu(priv, REPLY_BT_CONFIG,
1907 sizeof(struct iwl_bt_cmd), &bt_cmd);
1908 }
1909 EXPORT_SYMBOL(iwl_send_bt_config);
1910
1911 int iwl_send_statistics_request(struct iwl_priv *priv, u8 flags)
1912 {
1913 u32 stat_flags = 0;
1914 struct iwl_host_cmd cmd = {
1915 .id = REPLY_STATISTICS_CMD,
1916 .flags = flags,
1917 .len = sizeof(stat_flags),
1918 .data = (u8 *) &stat_flags,
1919 };
1920 return iwl_send_cmd(priv, &cmd);
1921 }
1922 EXPORT_SYMBOL(iwl_send_statistics_request);
1923
1924 /**
1925 * iwl_verify_inst_sparse - verify runtime uCode image in card vs. host,
1926 * using sample data 100 bytes apart. If these sample points are good,
1927 * it's a pretty good bet that everything between them is good, too.
1928 */
1929 static int iwlcore_verify_inst_sparse(struct iwl_priv *priv, __le32 *image, u32 len)
1930 {
1931 u32 val;
1932 int ret = 0;
1933 u32 errcnt = 0;
1934 u32 i;
1935
1936 IWL_DEBUG_INFO(priv, "ucode inst image size is %u\n", len);
1937
1938 for (i = 0; i < len; i += 100, image += 100/sizeof(u32)) {
1939 /* read data comes through single port, auto-incr addr */
1940 /* NOTE: Use the debugless read so we don't flood kernel log
1941 * if IWL_DL_IO is set */
1942 iwl_write_direct32(priv, HBUS_TARG_MEM_RADDR,
1943 i + IWL49_RTC_INST_LOWER_BOUND);
1944 val = _iwl_read_direct32(priv, HBUS_TARG_MEM_RDAT);
1945 if (val != le32_to_cpu(*image)) {
1946 ret = -EIO;
1947 errcnt++;
1948 if (errcnt >= 3)
1949 break;
1950 }
1951 }
1952
1953 return ret;
1954 }
1955
1956 /**
1957 * iwlcore_verify_inst_full - verify runtime uCode image in card vs. host,
1958 * looking at all data.
1959 */
1960 static int iwl_verify_inst_full(struct iwl_priv *priv, __le32 *image,
1961 u32 len)
1962 {
1963 u32 val;
1964 u32 save_len = len;
1965 int ret = 0;
1966 u32 errcnt;
1967
1968 IWL_DEBUG_INFO(priv, "ucode inst image size is %u\n", len);
1969
1970 iwl_write_direct32(priv, HBUS_TARG_MEM_RADDR,
1971 IWL49_RTC_INST_LOWER_BOUND);
1972
1973 errcnt = 0;
1974 for (; len > 0; len -= sizeof(u32), image++) {
1975 /* read data comes through single port, auto-incr addr */
1976 /* NOTE: Use the debugless read so we don't flood kernel log
1977 * if IWL_DL_IO is set */
1978 val = _iwl_read_direct32(priv, HBUS_TARG_MEM_RDAT);
1979 if (val != le32_to_cpu(*image)) {
1980 IWL_ERR(priv, "uCode INST section is invalid at "
1981 "offset 0x%x, is 0x%x, s/b 0x%x\n",
1982 save_len - len, val, le32_to_cpu(*image));
1983 ret = -EIO;
1984 errcnt++;
1985 if (errcnt >= 20)
1986 break;
1987 }
1988 }
1989
1990 if (!errcnt)
1991 IWL_DEBUG_INFO(priv,
1992 "ucode image in INSTRUCTION memory is good\n");
1993
1994 return ret;
1995 }
1996
1997 /**
1998 * iwl_verify_ucode - determine which instruction image is in SRAM,
1999 * and verify its contents
2000 */
2001 int iwl_verify_ucode(struct iwl_priv *priv)
2002 {
2003 __le32 *image;
2004 u32 len;
2005 int ret;
2006
2007 /* Try bootstrap */
2008 image = (__le32 *)priv->ucode_boot.v_addr;
2009 len = priv->ucode_boot.len;
2010 ret = iwlcore_verify_inst_sparse(priv, image, len);
2011 if (!ret) {
2012 IWL_DEBUG_INFO(priv, "Bootstrap uCode is good in inst SRAM\n");
2013 return 0;
2014 }
2015
2016 /* Try initialize */
2017 image = (__le32 *)priv->ucode_init.v_addr;
2018 len = priv->ucode_init.len;
2019 ret = iwlcore_verify_inst_sparse(priv, image, len);
2020 if (!ret) {
2021 IWL_DEBUG_INFO(priv, "Initialize uCode is good in inst SRAM\n");
2022 return 0;
2023 }
2024
2025 /* Try runtime/protocol */
2026 image = (__le32 *)priv->ucode_code.v_addr;
2027 len = priv->ucode_code.len;
2028 ret = iwlcore_verify_inst_sparse(priv, image, len);
2029 if (!ret) {
2030 IWL_DEBUG_INFO(priv, "Runtime uCode is good in inst SRAM\n");
2031 return 0;
2032 }
2033
2034 IWL_ERR(priv, "NO VALID UCODE IMAGE IN INSTRUCTION SRAM!!\n");
2035
2036 /* Since nothing seems to match, show first several data entries in
2037 * instruction SRAM, so maybe visual inspection will give a clue.
2038 * Selection of bootstrap image (vs. other images) is arbitrary. */
2039 image = (__le32 *)priv->ucode_boot.v_addr;
2040 len = priv->ucode_boot.len;
2041 ret = iwl_verify_inst_full(priv, image, len);
2042
2043 return ret;
2044 }
2045 EXPORT_SYMBOL(iwl_verify_ucode);
2046
2047
2048 void iwl_rf_kill_ct_config(struct iwl_priv *priv)
2049 {
2050 struct iwl_ct_kill_config cmd;
2051 struct iwl_ct_kill_throttling_config adv_cmd;
2052 unsigned long flags;
2053 int ret = 0;
2054
2055 spin_lock_irqsave(&priv->lock, flags);
2056 iwl_write32(priv, CSR_UCODE_DRV_GP1_CLR,
2057 CSR_UCODE_DRV_GP1_REG_BIT_CT_KILL_EXIT);
2058 spin_unlock_irqrestore(&priv->lock, flags);
2059 priv->thermal_throttle.ct_kill_toggle = false;
2060
2061 switch (priv->hw_rev & CSR_HW_REV_TYPE_MSK) {
2062 case CSR_HW_REV_TYPE_1000:
2063 case CSR_HW_REV_TYPE_6x00:
2064 case CSR_HW_REV_TYPE_6x50:
2065 adv_cmd.critical_temperature_enter =
2066 cpu_to_le32(priv->hw_params.ct_kill_threshold);
2067 adv_cmd.critical_temperature_exit =
2068 cpu_to_le32(priv->hw_params.ct_kill_exit_threshold);
2069
2070 ret = iwl_send_cmd_pdu(priv, REPLY_CT_KILL_CONFIG_CMD,
2071 sizeof(adv_cmd), &adv_cmd);
2072 if (ret)
2073 IWL_ERR(priv, "REPLY_CT_KILL_CONFIG_CMD failed\n");
2074 else
2075 IWL_DEBUG_INFO(priv, "REPLY_CT_KILL_CONFIG_CMD "
2076 "succeeded, "
2077 "critical temperature enter is %d,"
2078 "exit is %d\n",
2079 priv->hw_params.ct_kill_threshold,
2080 priv->hw_params.ct_kill_exit_threshold);
2081 break;
2082 default:
2083 cmd.critical_temperature_R =
2084 cpu_to_le32(priv->hw_params.ct_kill_threshold);
2085
2086 ret = iwl_send_cmd_pdu(priv, REPLY_CT_KILL_CONFIG_CMD,
2087 sizeof(cmd), &cmd);
2088 if (ret)
2089 IWL_ERR(priv, "REPLY_CT_KILL_CONFIG_CMD failed\n");
2090 else
2091 IWL_DEBUG_INFO(priv, "REPLY_CT_KILL_CONFIG_CMD "
2092 "succeeded, "
2093 "critical temperature is %d\n",
2094 priv->hw_params.ct_kill_threshold);
2095 break;
2096 }
2097 }
2098 EXPORT_SYMBOL(iwl_rf_kill_ct_config);
2099
2100
2101 /*
2102 * CARD_STATE_CMD
2103 *
2104 * Use: Sets the device's internal card state to enable, disable, or halt
2105 *
2106 * When in the 'enable' state the card operates as normal.
2107 * When in the 'disable' state, the card enters into a low power mode.
2108 * When in the 'halt' state, the card is shut down and must be fully
2109 * restarted to come back on.
2110 */
2111 int iwl_send_card_state(struct iwl_priv *priv, u32 flags, u8 meta_flag)
2112 {
2113 struct iwl_host_cmd cmd = {
2114 .id = REPLY_CARD_STATE_CMD,
2115 .len = sizeof(u32),
2116 .data = &flags,
2117 .flags = meta_flag,
2118 };
2119
2120 return iwl_send_cmd(priv, &cmd);
2121 }
2122
2123 void iwl_rx_pm_sleep_notif(struct iwl_priv *priv,
2124 struct iwl_rx_mem_buffer *rxb)
2125 {
2126 #ifdef CONFIG_IWLWIFI_DEBUG
2127 struct iwl_rx_packet *pkt = (struct iwl_rx_packet *)rxb->skb->data;
2128 struct iwl_sleep_notification *sleep = &(pkt->u.sleep_notif);
2129 IWL_DEBUG_RX(priv, "sleep mode: %d, src: %d\n",
2130 sleep->pm_sleep_mode, sleep->pm_wakeup_src);
2131 #endif
2132 }
2133 EXPORT_SYMBOL(iwl_rx_pm_sleep_notif);
2134
2135 void iwl_rx_pm_debug_statistics_notif(struct iwl_priv *priv,
2136 struct iwl_rx_mem_buffer *rxb)
2137 {
2138 struct iwl_rx_packet *pkt = (struct iwl_rx_packet *)rxb->skb->data;
2139 u32 len = le32_to_cpu(pkt->len_n_flags) & FH_RSCSR_FRAME_SIZE_MSK;
2140 IWL_DEBUG_RADIO(priv, "Dumping %d bytes of unhandled "
2141 "notification for %s:\n", len,
2142 get_cmd_string(pkt->hdr.cmd));
2143 iwl_print_hex_dump(priv, IWL_DL_RADIO, pkt->u.raw, len);
2144 }
2145 EXPORT_SYMBOL(iwl_rx_pm_debug_statistics_notif);
2146
2147 void iwl_rx_reply_error(struct iwl_priv *priv,
2148 struct iwl_rx_mem_buffer *rxb)
2149 {
2150 struct iwl_rx_packet *pkt = (struct iwl_rx_packet *)rxb->skb->data;
2151
2152 IWL_ERR(priv, "Error Reply type 0x%08X cmd %s (0x%02X) "
2153 "seq 0x%04X ser 0x%08X\n",
2154 le32_to_cpu(pkt->u.err_resp.error_type),
2155 get_cmd_string(pkt->u.err_resp.cmd_id),
2156 pkt->u.err_resp.cmd_id,
2157 le16_to_cpu(pkt->u.err_resp.bad_cmd_seq_num),
2158 le32_to_cpu(pkt->u.err_resp.error_info));
2159 }
2160 EXPORT_SYMBOL(iwl_rx_reply_error);
2161
2162 void iwl_clear_isr_stats(struct iwl_priv *priv)
2163 {
2164 memset(&priv->isr_stats, 0, sizeof(priv->isr_stats));
2165 }
2166
2167 int iwl_mac_conf_tx(struct ieee80211_hw *hw, u16 queue,
2168 const struct ieee80211_tx_queue_params *params)
2169 {
2170 struct iwl_priv *priv = hw->priv;
2171 unsigned long flags;
2172 int q;
2173
2174 IWL_DEBUG_MAC80211(priv, "enter\n");
2175
2176 if (!iwl_is_ready_rf(priv)) {
2177 IWL_DEBUG_MAC80211(priv, "leave - RF not ready\n");
2178 return -EIO;
2179 }
2180
2181 if (queue >= AC_NUM) {
2182 IWL_DEBUG_MAC80211(priv, "leave - queue >= AC_NUM %d\n", queue);
2183 return 0;
2184 }
2185
2186 q = AC_NUM - 1 - queue;
2187
2188 spin_lock_irqsave(&priv->lock, flags);
2189
2190 priv->qos_data.def_qos_parm.ac[q].cw_min = cpu_to_le16(params->cw_min);
2191 priv->qos_data.def_qos_parm.ac[q].cw_max = cpu_to_le16(params->cw_max);
2192 priv->qos_data.def_qos_parm.ac[q].aifsn = params->aifs;
2193 priv->qos_data.def_qos_parm.ac[q].edca_txop =
2194 cpu_to_le16((params->txop * 32));
2195
2196 priv->qos_data.def_qos_parm.ac[q].reserved1 = 0;
2197 priv->qos_data.qos_active = 1;
2198
2199 if (priv->iw_mode == NL80211_IFTYPE_AP)
2200 iwl_activate_qos(priv, 1);
2201 else if (priv->assoc_id && iwl_is_associated(priv))
2202 iwl_activate_qos(priv, 0);
2203
2204 spin_unlock_irqrestore(&priv->lock, flags);
2205
2206 IWL_DEBUG_MAC80211(priv, "leave\n");
2207 return 0;
2208 }
2209 EXPORT_SYMBOL(iwl_mac_conf_tx);
2210
2211 static void iwl_ht_conf(struct iwl_priv *priv,
2212 struct ieee80211_bss_conf *bss_conf)
2213 {
2214 struct iwl_ht_config *ht_conf = &priv->current_ht_config;
2215 struct ieee80211_sta *sta;
2216
2217 IWL_DEBUG_MAC80211(priv, "enter: \n");
2218
2219 if (!ht_conf->is_ht)
2220 return;
2221
2222 ht_conf->ht_protection =
2223 bss_conf->ht_operation_mode & IEEE80211_HT_OP_MODE_PROTECTION;
2224 ht_conf->non_GF_STA_present =
2225 !!(bss_conf->ht_operation_mode & IEEE80211_HT_OP_MODE_NON_GF_STA_PRSNT);
2226
2227 ht_conf->single_chain_sufficient = false;
2228
2229 switch (priv->iw_mode) {
2230 case NL80211_IFTYPE_STATION:
2231 rcu_read_lock();
2232 sta = ieee80211_find_sta(priv->hw, priv->bssid);
2233 if (sta) {
2234 struct ieee80211_sta_ht_cap *ht_cap = &sta->ht_cap;
2235 int maxstreams;
2236
2237 maxstreams = (ht_cap->mcs.tx_params &
2238 IEEE80211_HT_MCS_TX_MAX_STREAMS_MASK)
2239 >> IEEE80211_HT_MCS_TX_MAX_STREAMS_SHIFT;
2240 maxstreams += 1;
2241
2242 if ((ht_cap->mcs.rx_mask[1] == 0) &&
2243 (ht_cap->mcs.rx_mask[2] == 0))
2244 ht_conf->single_chain_sufficient = true;
2245 if (maxstreams <= 1)
2246 ht_conf->single_chain_sufficient = true;
2247 } else {
2248 /*
2249 * If at all, this can only happen through a race
2250 * when the AP disconnects us while we're still
2251 * setting up the connection, in that case mac80211
2252 * will soon tell us about that.
2253 */
2254 ht_conf->single_chain_sufficient = true;
2255 }
2256 rcu_read_unlock();
2257 break;
2258 case NL80211_IFTYPE_ADHOC:
2259 ht_conf->single_chain_sufficient = true;
2260 break;
2261 default:
2262 break;
2263 }
2264
2265 IWL_DEBUG_MAC80211(priv, "leave\n");
2266 }
2267
2268 #define IWL_DELAY_NEXT_SCAN_AFTER_ASSOC (HZ*6)
2269 void iwl_bss_info_changed(struct ieee80211_hw *hw,
2270 struct ieee80211_vif *vif,
2271 struct ieee80211_bss_conf *bss_conf,
2272 u32 changes)
2273 {
2274 struct iwl_priv *priv = hw->priv;
2275 int ret;
2276
2277 IWL_DEBUG_MAC80211(priv, "changes = 0x%X\n", changes);
2278
2279 if (!iwl_is_alive(priv))
2280 return;
2281
2282 mutex_lock(&priv->mutex);
2283
2284 if (changes & BSS_CHANGED_BEACON &&
2285 priv->iw_mode == NL80211_IFTYPE_AP) {
2286 dev_kfree_skb(priv->ibss_beacon);
2287 priv->ibss_beacon = ieee80211_beacon_get(hw, vif);
2288 }
2289
2290 if (changes & BSS_CHANGED_BEACON_INT) {
2291 priv->beacon_int = bss_conf->beacon_int;
2292 /* TODO: in AP mode, do something to make this take effect */
2293 }
2294
2295 if (changes & BSS_CHANGED_BSSID) {
2296 IWL_DEBUG_MAC80211(priv, "BSSID %pM\n", bss_conf->bssid);
2297
2298 /*
2299 * If there is currently a HW scan going on in the
2300 * background then we need to cancel it else the RXON
2301 * below/in post_associate will fail.
2302 */
2303 if (iwl_scan_cancel_timeout(priv, 100)) {
2304 IWL_WARN(priv, "Aborted scan still in progress after 100ms\n");
2305 IWL_DEBUG_MAC80211(priv, "leaving - scan abort failed.\n");
2306 mutex_unlock(&priv->mutex);
2307 return;
2308 }
2309
2310 /* mac80211 only sets assoc when in STATION mode */
2311 if (priv->iw_mode == NL80211_IFTYPE_ADHOC ||
2312 bss_conf->assoc) {
2313 memcpy(priv->staging_rxon.bssid_addr,
2314 bss_conf->bssid, ETH_ALEN);
2315
2316 /* currently needed in a few places */
2317 memcpy(priv->bssid, bss_conf->bssid, ETH_ALEN);
2318 } else {
2319 priv->staging_rxon.filter_flags &=
2320 ~RXON_FILTER_ASSOC_MSK;
2321 }
2322
2323 }
2324
2325 /*
2326 * This needs to be after setting the BSSID in case
2327 * mac80211 decides to do both changes at once because
2328 * it will invoke post_associate.
2329 */
2330 if (priv->iw_mode == NL80211_IFTYPE_ADHOC &&
2331 changes & BSS_CHANGED_BEACON) {
2332 struct sk_buff *beacon = ieee80211_beacon_get(hw, vif);
2333
2334 if (beacon)
2335 iwl_mac_beacon_update(hw, beacon);
2336 }
2337
2338 if (changes & BSS_CHANGED_ERP_PREAMBLE) {
2339 IWL_DEBUG_MAC80211(priv, "ERP_PREAMBLE %d\n",
2340 bss_conf->use_short_preamble);
2341 if (bss_conf->use_short_preamble)
2342 priv->staging_rxon.flags |= RXON_FLG_SHORT_PREAMBLE_MSK;
2343 else
2344 priv->staging_rxon.flags &= ~RXON_FLG_SHORT_PREAMBLE_MSK;
2345 }
2346
2347 if (changes & BSS_CHANGED_ERP_CTS_PROT) {
2348 IWL_DEBUG_MAC80211(priv, "ERP_CTS %d\n", bss_conf->use_cts_prot);
2349 if (bss_conf->use_cts_prot && (priv->band != IEEE80211_BAND_5GHZ))
2350 priv->staging_rxon.flags |= RXON_FLG_TGG_PROTECT_MSK;
2351 else
2352 priv->staging_rxon.flags &= ~RXON_FLG_TGG_PROTECT_MSK;
2353 }
2354
2355 if (changes & BSS_CHANGED_BASIC_RATES) {
2356 /* XXX use this information
2357 *
2358 * To do that, remove code from iwl_set_rate() and put something
2359 * like this here:
2360 *
2361 if (A-band)
2362 priv->staging_rxon.ofdm_basic_rates =
2363 bss_conf->basic_rates;
2364 else
2365 priv->staging_rxon.ofdm_basic_rates =
2366 bss_conf->basic_rates >> 4;
2367 priv->staging_rxon.cck_basic_rates =
2368 bss_conf->basic_rates & 0xF;
2369 */
2370 }
2371
2372 if (changes & BSS_CHANGED_HT) {
2373 iwl_ht_conf(priv, bss_conf);
2374
2375 if (priv->cfg->ops->hcmd->set_rxon_chain)
2376 priv->cfg->ops->hcmd->set_rxon_chain(priv);
2377 }
2378
2379 if (changes & BSS_CHANGED_ASSOC) {
2380 IWL_DEBUG_MAC80211(priv, "ASSOC %d\n", bss_conf->assoc);
2381 if (bss_conf->assoc) {
2382 priv->assoc_id = bss_conf->aid;
2383 priv->beacon_int = bss_conf->beacon_int;
2384 priv->timestamp = bss_conf->timestamp;
2385 priv->assoc_capability = bss_conf->assoc_capability;
2386
2387 /*
2388 * We have just associated, don't start scan too early
2389 * leave time for EAPOL exchange to complete.
2390 *
2391 * XXX: do this in mac80211
2392 */
2393 priv->next_scan_jiffies = jiffies +
2394 IWL_DELAY_NEXT_SCAN_AFTER_ASSOC;
2395 if (!iwl_is_rfkill(priv))
2396 priv->cfg->ops->lib->post_associate(priv);
2397 } else
2398 priv->assoc_id = 0;
2399
2400 }
2401
2402 if (changes && iwl_is_associated(priv) && priv->assoc_id) {
2403 IWL_DEBUG_MAC80211(priv, "Changes (%#x) while associated\n",
2404 changes);
2405 ret = iwl_send_rxon_assoc(priv);
2406 if (!ret) {
2407 /* Sync active_rxon with latest change. */
2408 memcpy((void *)&priv->active_rxon,
2409 &priv->staging_rxon,
2410 sizeof(struct iwl_rxon_cmd));
2411 }
2412 }
2413
2414 mutex_unlock(&priv->mutex);
2415
2416 IWL_DEBUG_MAC80211(priv, "leave\n");
2417 }
2418 EXPORT_SYMBOL(iwl_bss_info_changed);
2419
2420 int iwl_mac_beacon_update(struct ieee80211_hw *hw, struct sk_buff *skb)
2421 {
2422 struct iwl_priv *priv = hw->priv;
2423 unsigned long flags;
2424 __le64 timestamp;
2425
2426 IWL_DEBUG_MAC80211(priv, "enter\n");
2427
2428 if (!iwl_is_ready_rf(priv)) {
2429 IWL_DEBUG_MAC80211(priv, "leave - RF not ready\n");
2430 return -EIO;
2431 }
2432
2433 if (priv->iw_mode != NL80211_IFTYPE_ADHOC) {
2434 IWL_DEBUG_MAC80211(priv, "leave - not IBSS\n");
2435 return -EIO;
2436 }
2437
2438 spin_lock_irqsave(&priv->lock, flags);
2439
2440 if (priv->ibss_beacon)
2441 dev_kfree_skb(priv->ibss_beacon);
2442
2443 priv->ibss_beacon = skb;
2444
2445 priv->assoc_id = 0;
2446 timestamp = ((struct ieee80211_mgmt *)skb->data)->u.beacon.timestamp;
2447 priv->timestamp = le64_to_cpu(timestamp);
2448
2449 IWL_DEBUG_MAC80211(priv, "leave\n");
2450 spin_unlock_irqrestore(&priv->lock, flags);
2451
2452 iwl_reset_qos(priv);
2453
2454 priv->cfg->ops->lib->post_associate(priv);
2455
2456
2457 return 0;
2458 }
2459 EXPORT_SYMBOL(iwl_mac_beacon_update);
2460
2461 int iwl_set_mode(struct iwl_priv *priv, int mode)
2462 {
2463 if (mode == NL80211_IFTYPE_ADHOC) {
2464 const struct iwl_channel_info *ch_info;
2465
2466 ch_info = iwl_get_channel_info(priv,
2467 priv->band,
2468 le16_to_cpu(priv->staging_rxon.channel));
2469
2470 if (!ch_info || !is_channel_ibss(ch_info)) {
2471 IWL_ERR(priv, "channel %d not IBSS channel\n",
2472 le16_to_cpu(priv->staging_rxon.channel));
2473 return -EINVAL;
2474 }
2475 }
2476
2477 iwl_connection_init_rx_config(priv, mode);
2478
2479 if (priv->cfg->ops->hcmd->set_rxon_chain)
2480 priv->cfg->ops->hcmd->set_rxon_chain(priv);
2481
2482 memcpy(priv->staging_rxon.node_addr, priv->mac_addr, ETH_ALEN);
2483
2484 iwl_clear_stations_table(priv);
2485
2486 /* dont commit rxon if rf-kill is on*/
2487 if (!iwl_is_ready_rf(priv))
2488 return -EAGAIN;
2489
2490 iwlcore_commit_rxon(priv);
2491
2492 return 0;
2493 }
2494 EXPORT_SYMBOL(iwl_set_mode);
2495
2496 int iwl_mac_add_interface(struct ieee80211_hw *hw,
2497 struct ieee80211_if_init_conf *conf)
2498 {
2499 struct iwl_priv *priv = hw->priv;
2500 unsigned long flags;
2501
2502 IWL_DEBUG_MAC80211(priv, "enter: type %d\n", conf->type);
2503
2504 if (priv->vif) {
2505 IWL_DEBUG_MAC80211(priv, "leave - vif != NULL\n");
2506 return -EOPNOTSUPP;
2507 }
2508
2509 spin_lock_irqsave(&priv->lock, flags);
2510 priv->vif = conf->vif;
2511 priv->iw_mode = conf->type;
2512
2513 spin_unlock_irqrestore(&priv->lock, flags);
2514
2515 mutex_lock(&priv->mutex);
2516
2517 if (conf->mac_addr) {
2518 IWL_DEBUG_MAC80211(priv, "Set %pM\n", conf->mac_addr);
2519 memcpy(priv->mac_addr, conf->mac_addr, ETH_ALEN);
2520 }
2521
2522 if (iwl_set_mode(priv, conf->type) == -EAGAIN)
2523 /* we are not ready, will run again when ready */
2524 set_bit(STATUS_MODE_PENDING, &priv->status);
2525
2526 mutex_unlock(&priv->mutex);
2527
2528 IWL_DEBUG_MAC80211(priv, "leave\n");
2529 return 0;
2530 }
2531 EXPORT_SYMBOL(iwl_mac_add_interface);
2532
2533 void iwl_mac_remove_interface(struct ieee80211_hw *hw,
2534 struct ieee80211_if_init_conf *conf)
2535 {
2536 struct iwl_priv *priv = hw->priv;
2537
2538 IWL_DEBUG_MAC80211(priv, "enter\n");
2539
2540 mutex_lock(&priv->mutex);
2541
2542 if (iwl_is_ready_rf(priv)) {
2543 iwl_scan_cancel_timeout(priv, 100);
2544 priv->staging_rxon.filter_flags &= ~RXON_FILTER_ASSOC_MSK;
2545 iwlcore_commit_rxon(priv);
2546 }
2547 if (priv->vif == conf->vif) {
2548 priv->vif = NULL;
2549 memset(priv->bssid, 0, ETH_ALEN);
2550 }
2551 mutex_unlock(&priv->mutex);
2552
2553 IWL_DEBUG_MAC80211(priv, "leave\n");
2554
2555 }
2556 EXPORT_SYMBOL(iwl_mac_remove_interface);
2557
2558 /**
2559 * iwl_mac_config - mac80211 config callback
2560 *
2561 * We ignore conf->flags & IEEE80211_CONF_SHORT_SLOT_TIME since it seems to
2562 * be set inappropriately and the driver currently sets the hardware up to
2563 * use it whenever needed.
2564 */
2565 int iwl_mac_config(struct ieee80211_hw *hw, u32 changed)
2566 {
2567 struct iwl_priv *priv = hw->priv;
2568 const struct iwl_channel_info *ch_info;
2569 struct ieee80211_conf *conf = &hw->conf;
2570 struct iwl_ht_config *ht_conf = &priv->current_ht_config;
2571 unsigned long flags = 0;
2572 int ret = 0;
2573 u16 ch;
2574 int scan_active = 0;
2575
2576 mutex_lock(&priv->mutex);
2577
2578 IWL_DEBUG_MAC80211(priv, "enter to channel %d changed 0x%X\n",
2579 conf->channel->hw_value, changed);
2580
2581 if (unlikely(!priv->cfg->mod_params->disable_hw_scan &&
2582 test_bit(STATUS_SCANNING, &priv->status))) {
2583 scan_active = 1;
2584 IWL_DEBUG_MAC80211(priv, "leave - scanning\n");
2585 }
2586
2587
2588 /* during scanning mac80211 will delay channel setting until
2589 * scan finish with changed = 0
2590 */
2591 if (!changed || (changed & IEEE80211_CONF_CHANGE_CHANNEL)) {
2592 if (scan_active)
2593 goto set_ch_out;
2594
2595 ch = ieee80211_frequency_to_channel(conf->channel->center_freq);
2596 ch_info = iwl_get_channel_info(priv, conf->channel->band, ch);
2597 if (!is_channel_valid(ch_info)) {
2598 IWL_DEBUG_MAC80211(priv, "leave - invalid channel\n");
2599 ret = -EINVAL;
2600 goto set_ch_out;
2601 }
2602
2603 if (priv->iw_mode == NL80211_IFTYPE_ADHOC &&
2604 !is_channel_ibss(ch_info)) {
2605 IWL_ERR(priv, "channel %d in band %d not "
2606 "IBSS channel\n",
2607 conf->channel->hw_value, conf->channel->band);
2608 ret = -EINVAL;
2609 goto set_ch_out;
2610 }
2611
2612 spin_lock_irqsave(&priv->lock, flags);
2613
2614 /* Configure HT40 channels */
2615 ht_conf->is_ht = conf_is_ht(conf);
2616 if (ht_conf->is_ht) {
2617 if (conf_is_ht40_minus(conf)) {
2618 ht_conf->extension_chan_offset =
2619 IEEE80211_HT_PARAM_CHA_SEC_BELOW;
2620 ht_conf->is_40mhz = true;
2621 } else if (conf_is_ht40_plus(conf)) {
2622 ht_conf->extension_chan_offset =
2623 IEEE80211_HT_PARAM_CHA_SEC_ABOVE;
2624 ht_conf->is_40mhz = true;
2625 } else {
2626 ht_conf->extension_chan_offset =
2627 IEEE80211_HT_PARAM_CHA_SEC_NONE;
2628 ht_conf->is_40mhz = false;
2629 }
2630 } else
2631 ht_conf->is_40mhz = false;
2632 /* Default to no protection. Protection mode will later be set
2633 * from BSS config in iwl_ht_conf */
2634 ht_conf->ht_protection = IEEE80211_HT_OP_MODE_PROTECTION_NONE;
2635
2636 /* if we are switching from ht to 2.4 clear flags
2637 * from any ht related info since 2.4 does not
2638 * support ht */
2639 if ((le16_to_cpu(priv->staging_rxon.channel) != ch))
2640 priv->staging_rxon.flags = 0;
2641
2642 iwl_set_rxon_channel(priv, conf->channel);
2643
2644 iwl_set_flags_for_band(priv, conf->channel->band);
2645 spin_unlock_irqrestore(&priv->lock, flags);
2646 set_ch_out:
2647 /* The list of supported rates and rate mask can be different
2648 * for each band; since the band may have changed, reset
2649 * the rate mask to what mac80211 lists */
2650 iwl_set_rate(priv);
2651 }
2652
2653 if (changed & (IEEE80211_CONF_CHANGE_PS |
2654 IEEE80211_CONF_CHANGE_IDLE)) {
2655 ret = iwl_power_update_mode(priv, false);
2656 if (ret)
2657 IWL_DEBUG_MAC80211(priv, "Error setting sleep level\n");
2658 }
2659
2660 if (changed & IEEE80211_CONF_CHANGE_POWER) {
2661 IWL_DEBUG_MAC80211(priv, "TX Power old=%d new=%d\n",
2662 priv->tx_power_user_lmt, conf->power_level);
2663
2664 iwl_set_tx_power(priv, conf->power_level, false);
2665 }
2666
2667 /* call to ensure that 4965 rx_chain is set properly in monitor mode */
2668 if (priv->cfg->ops->hcmd->set_rxon_chain)
2669 priv->cfg->ops->hcmd->set_rxon_chain(priv);
2670
2671 if (!iwl_is_ready(priv)) {
2672 IWL_DEBUG_MAC80211(priv, "leave - not ready\n");
2673 goto out;
2674 }
2675
2676 if (scan_active)
2677 goto out;
2678
2679 if (memcmp(&priv->active_rxon,
2680 &priv->staging_rxon, sizeof(priv->staging_rxon)))
2681 iwlcore_commit_rxon(priv);
2682 else
2683 IWL_DEBUG_INFO(priv, "Not re-sending same RXON configuration.\n");
2684
2685
2686 out:
2687 IWL_DEBUG_MAC80211(priv, "leave\n");
2688 mutex_unlock(&priv->mutex);
2689 return ret;
2690 }
2691 EXPORT_SYMBOL(iwl_mac_config);
2692
2693 int iwl_mac_get_tx_stats(struct ieee80211_hw *hw,
2694 struct ieee80211_tx_queue_stats *stats)
2695 {
2696 struct iwl_priv *priv = hw->priv;
2697 int i, avail;
2698 struct iwl_tx_queue *txq;
2699 struct iwl_queue *q;
2700 unsigned long flags;
2701
2702 IWL_DEBUG_MAC80211(priv, "enter\n");
2703
2704 if (!iwl_is_ready_rf(priv)) {
2705 IWL_DEBUG_MAC80211(priv, "leave - RF not ready\n");
2706 return -EIO;
2707 }
2708
2709 spin_lock_irqsave(&priv->lock, flags);
2710
2711 for (i = 0; i < AC_NUM; i++) {
2712 txq = &priv->txq[i];
2713 q = &txq->q;
2714 avail = iwl_queue_space(q);
2715
2716 stats[i].len = q->n_window - avail;
2717 stats[i].limit = q->n_window - q->high_mark;
2718 stats[i].count = q->n_window;
2719
2720 }
2721 spin_unlock_irqrestore(&priv->lock, flags);
2722
2723 IWL_DEBUG_MAC80211(priv, "leave\n");
2724
2725 return 0;
2726 }
2727 EXPORT_SYMBOL(iwl_mac_get_tx_stats);
2728
2729 void iwl_mac_reset_tsf(struct ieee80211_hw *hw)
2730 {
2731 struct iwl_priv *priv = hw->priv;
2732 unsigned long flags;
2733
2734 mutex_lock(&priv->mutex);
2735 IWL_DEBUG_MAC80211(priv, "enter\n");
2736
2737 spin_lock_irqsave(&priv->lock, flags);
2738 memset(&priv->current_ht_config, 0, sizeof(struct iwl_ht_config));
2739 spin_unlock_irqrestore(&priv->lock, flags);
2740
2741 iwl_reset_qos(priv);
2742
2743 spin_lock_irqsave(&priv->lock, flags);
2744 priv->assoc_id = 0;
2745 priv->assoc_capability = 0;
2746 priv->assoc_station_added = 0;
2747
2748 /* new association get rid of ibss beacon skb */
2749 if (priv->ibss_beacon)
2750 dev_kfree_skb(priv->ibss_beacon);
2751
2752 priv->ibss_beacon = NULL;
2753
2754 priv->beacon_int = priv->vif->bss_conf.beacon_int;
2755 priv->timestamp = 0;
2756 if ((priv->iw_mode == NL80211_IFTYPE_STATION))
2757 priv->beacon_int = 0;
2758
2759 spin_unlock_irqrestore(&priv->lock, flags);
2760
2761 if (!iwl_is_ready_rf(priv)) {
2762 IWL_DEBUG_MAC80211(priv, "leave - not ready\n");
2763 mutex_unlock(&priv->mutex);
2764 return;
2765 }
2766
2767 /* we are restarting association process
2768 * clear RXON_FILTER_ASSOC_MSK bit
2769 */
2770 if (priv->iw_mode != NL80211_IFTYPE_AP) {
2771 iwl_scan_cancel_timeout(priv, 100);
2772 priv->staging_rxon.filter_flags &= ~RXON_FILTER_ASSOC_MSK;
2773 iwlcore_commit_rxon(priv);
2774 }
2775
2776 if (priv->iw_mode != NL80211_IFTYPE_ADHOC) {
2777 IWL_DEBUG_MAC80211(priv, "leave - not in IBSS\n");
2778 mutex_unlock(&priv->mutex);
2779 return;
2780 }
2781
2782 iwl_set_rate(priv);
2783
2784 mutex_unlock(&priv->mutex);
2785
2786 IWL_DEBUG_MAC80211(priv, "leave\n");
2787 }
2788 EXPORT_SYMBOL(iwl_mac_reset_tsf);
2789
2790 #ifdef CONFIG_IWLWIFI_DEBUGFS
2791
2792 #define IWL_TRAFFIC_DUMP_SIZE (IWL_TRAFFIC_ENTRY_SIZE * IWL_TRAFFIC_ENTRIES)
2793
2794 void iwl_reset_traffic_log(struct iwl_priv *priv)
2795 {
2796 priv->tx_traffic_idx = 0;
2797 priv->rx_traffic_idx = 0;
2798 if (priv->tx_traffic)
2799 memset(priv->tx_traffic, 0, IWL_TRAFFIC_DUMP_SIZE);
2800 if (priv->rx_traffic)
2801 memset(priv->rx_traffic, 0, IWL_TRAFFIC_DUMP_SIZE);
2802 }
2803
2804 int iwl_alloc_traffic_mem(struct iwl_priv *priv)
2805 {
2806 u32 traffic_size = IWL_TRAFFIC_DUMP_SIZE;
2807
2808 if (iwl_debug_level & IWL_DL_TX) {
2809 if (!priv->tx_traffic) {
2810 priv->tx_traffic =
2811 kzalloc(traffic_size, GFP_KERNEL);
2812 if (!priv->tx_traffic)
2813 return -ENOMEM;
2814 }
2815 }
2816 if (iwl_debug_level & IWL_DL_RX) {
2817 if (!priv->rx_traffic) {
2818 priv->rx_traffic =
2819 kzalloc(traffic_size, GFP_KERNEL);
2820 if (!priv->rx_traffic)
2821 return -ENOMEM;
2822 }
2823 }
2824 iwl_reset_traffic_log(priv);
2825 return 0;
2826 }
2827 EXPORT_SYMBOL(iwl_alloc_traffic_mem);
2828
2829 void iwl_free_traffic_mem(struct iwl_priv *priv)
2830 {
2831 kfree(priv->tx_traffic);
2832 priv->tx_traffic = NULL;
2833
2834 kfree(priv->rx_traffic);
2835 priv->rx_traffic = NULL;
2836 }
2837 EXPORT_SYMBOL(iwl_free_traffic_mem);
2838
2839 void iwl_dbg_log_tx_data_frame(struct iwl_priv *priv,
2840 u16 length, struct ieee80211_hdr *header)
2841 {
2842 __le16 fc;
2843 u16 len;
2844
2845 if (likely(!(iwl_debug_level & IWL_DL_TX)))
2846 return;
2847
2848 if (!priv->tx_traffic)
2849 return;
2850
2851 fc = header->frame_control;
2852 if (ieee80211_is_data(fc)) {
2853 len = (length > IWL_TRAFFIC_ENTRY_SIZE)
2854 ? IWL_TRAFFIC_ENTRY_SIZE : length;
2855 memcpy((priv->tx_traffic +
2856 (priv->tx_traffic_idx * IWL_TRAFFIC_ENTRY_SIZE)),
2857 header, len);
2858 priv->tx_traffic_idx =
2859 (priv->tx_traffic_idx + 1) % IWL_TRAFFIC_ENTRIES;
2860 }
2861 }
2862 EXPORT_SYMBOL(iwl_dbg_log_tx_data_frame);
2863
2864 void iwl_dbg_log_rx_data_frame(struct iwl_priv *priv,
2865 u16 length, struct ieee80211_hdr *header)
2866 {
2867 __le16 fc;
2868 u16 len;
2869
2870 if (likely(!(iwl_debug_level & IWL_DL_RX)))
2871 return;
2872
2873 if (!priv->rx_traffic)
2874 return;
2875
2876 fc = header->frame_control;
2877 if (ieee80211_is_data(fc)) {
2878 len = (length > IWL_TRAFFIC_ENTRY_SIZE)
2879 ? IWL_TRAFFIC_ENTRY_SIZE : length;
2880 memcpy((priv->rx_traffic +
2881 (priv->rx_traffic_idx * IWL_TRAFFIC_ENTRY_SIZE)),
2882 header, len);
2883 priv->rx_traffic_idx =
2884 (priv->rx_traffic_idx + 1) % IWL_TRAFFIC_ENTRIES;
2885 }
2886 }
2887 EXPORT_SYMBOL(iwl_dbg_log_rx_data_frame);
2888
2889 const char *get_mgmt_string(int cmd)
2890 {
2891 switch (cmd) {
2892 IWL_CMD(MANAGEMENT_ASSOC_REQ);
2893 IWL_CMD(MANAGEMENT_ASSOC_RESP);
2894 IWL_CMD(MANAGEMENT_REASSOC_REQ);
2895 IWL_CMD(MANAGEMENT_REASSOC_RESP);
2896 IWL_CMD(MANAGEMENT_PROBE_REQ);
2897 IWL_CMD(MANAGEMENT_PROBE_RESP);
2898 IWL_CMD(MANAGEMENT_BEACON);
2899 IWL_CMD(MANAGEMENT_ATIM);
2900 IWL_CMD(MANAGEMENT_DISASSOC);
2901 IWL_CMD(MANAGEMENT_AUTH);
2902 IWL_CMD(MANAGEMENT_DEAUTH);
2903 IWL_CMD(MANAGEMENT_ACTION);
2904 default:
2905 return "UNKNOWN";
2906
2907 }
2908 }
2909
2910 const char *get_ctrl_string(int cmd)
2911 {
2912 switch (cmd) {
2913 IWL_CMD(CONTROL_BACK_REQ);
2914 IWL_CMD(CONTROL_BACK);
2915 IWL_CMD(CONTROL_PSPOLL);
2916 IWL_CMD(CONTROL_RTS);
2917 IWL_CMD(CONTROL_CTS);
2918 IWL_CMD(CONTROL_ACK);
2919 IWL_CMD(CONTROL_CFEND);
2920 IWL_CMD(CONTROL_CFENDACK);
2921 default:
2922 return "UNKNOWN";
2923
2924 }
2925 }
2926
2927 void iwl_clear_tx_stats(struct iwl_priv *priv)
2928 {
2929 memset(&priv->tx_stats, 0, sizeof(struct traffic_stats));
2930
2931 }
2932
2933 void iwl_clear_rx_stats(struct iwl_priv *priv)
2934 {
2935 memset(&priv->rx_stats, 0, sizeof(struct traffic_stats));
2936 }
2937
2938 /*
2939 * if CONFIG_IWLWIFI_DEBUGFS defined, iwl_update_stats function will
2940 * record all the MGMT, CTRL and DATA pkt for both TX and Rx pass.
2941 * Use debugFs to display the rx/rx_statistics
2942 * if CONFIG_IWLWIFI_DEBUGFS not being defined, then no MGMT and CTRL
2943 * information will be recorded, but DATA pkt still will be recorded
2944 * for the reason of iwl_led.c need to control the led blinking based on
2945 * number of tx and rx data.
2946 *
2947 */
2948 void iwl_update_stats(struct iwl_priv *priv, bool is_tx, __le16 fc, u16 len)
2949 {
2950 struct traffic_stats *stats;
2951
2952 if (is_tx)
2953 stats = &priv->tx_stats;
2954 else
2955 stats = &priv->rx_stats;
2956
2957 if (ieee80211_is_mgmt(fc)) {
2958 switch (fc & cpu_to_le16(IEEE80211_FCTL_STYPE)) {
2959 case cpu_to_le16(IEEE80211_STYPE_ASSOC_REQ):
2960 stats->mgmt[MANAGEMENT_ASSOC_REQ]++;
2961 break;
2962 case cpu_to_le16(IEEE80211_STYPE_ASSOC_RESP):
2963 stats->mgmt[MANAGEMENT_ASSOC_RESP]++;
2964 break;
2965 case cpu_to_le16(IEEE80211_STYPE_REASSOC_REQ):
2966 stats->mgmt[MANAGEMENT_REASSOC_REQ]++;
2967 break;
2968 case cpu_to_le16(IEEE80211_STYPE_REASSOC_RESP):
2969 stats->mgmt[MANAGEMENT_REASSOC_RESP]++;
2970 break;
2971 case cpu_to_le16(IEEE80211_STYPE_PROBE_REQ):
2972 stats->mgmt[MANAGEMENT_PROBE_REQ]++;
2973 break;
2974 case cpu_to_le16(IEEE80211_STYPE_PROBE_RESP):
2975 stats->mgmt[MANAGEMENT_PROBE_RESP]++;
2976 break;
2977 case cpu_to_le16(IEEE80211_STYPE_BEACON):
2978 stats->mgmt[MANAGEMENT_BEACON]++;
2979 break;
2980 case cpu_to_le16(IEEE80211_STYPE_ATIM):
2981 stats->mgmt[MANAGEMENT_ATIM]++;
2982 break;
2983 case cpu_to_le16(IEEE80211_STYPE_DISASSOC):
2984 stats->mgmt[MANAGEMENT_DISASSOC]++;
2985 break;
2986 case cpu_to_le16(IEEE80211_STYPE_AUTH):
2987 stats->mgmt[MANAGEMENT_AUTH]++;
2988 break;
2989 case cpu_to_le16(IEEE80211_STYPE_DEAUTH):
2990 stats->mgmt[MANAGEMENT_DEAUTH]++;
2991 break;
2992 case cpu_to_le16(IEEE80211_STYPE_ACTION):
2993 stats->mgmt[MANAGEMENT_ACTION]++;
2994 break;
2995 }
2996 } else if (ieee80211_is_ctl(fc)) {
2997 switch (fc & cpu_to_le16(IEEE80211_FCTL_STYPE)) {
2998 case cpu_to_le16(IEEE80211_STYPE_BACK_REQ):
2999 stats->ctrl[CONTROL_BACK_REQ]++;
3000 break;
3001 case cpu_to_le16(IEEE80211_STYPE_BACK):
3002 stats->ctrl[CONTROL_BACK]++;
3003 break;
3004 case cpu_to_le16(IEEE80211_STYPE_PSPOLL):
3005 stats->ctrl[CONTROL_PSPOLL]++;
3006 break;
3007 case cpu_to_le16(IEEE80211_STYPE_RTS):
3008 stats->ctrl[CONTROL_RTS]++;
3009 break;
3010 case cpu_to_le16(IEEE80211_STYPE_CTS):
3011 stats->ctrl[CONTROL_CTS]++;
3012 break;
3013 case cpu_to_le16(IEEE80211_STYPE_ACK):
3014 stats->ctrl[CONTROL_ACK]++;
3015 break;
3016 case cpu_to_le16(IEEE80211_STYPE_CFEND):
3017 stats->ctrl[CONTROL_CFEND]++;
3018 break;
3019 case cpu_to_le16(IEEE80211_STYPE_CFENDACK):
3020 stats->ctrl[CONTROL_CFENDACK]++;
3021 break;
3022 }
3023 } else {
3024 /* data */
3025 stats->data_cnt++;
3026 stats->data_bytes += len;
3027 }
3028 }
3029 EXPORT_SYMBOL(iwl_update_stats);
3030 #endif
3031
3032 #ifdef CONFIG_PM
3033
3034 int iwl_pci_suspend(struct pci_dev *pdev, pm_message_t state)
3035 {
3036 struct iwl_priv *priv = pci_get_drvdata(pdev);
3037
3038 /*
3039 * This function is called when system goes into suspend state
3040 * mac80211 will call iwl_mac_stop() from the mac80211 suspend function
3041 * first but since iwl_mac_stop() has no knowledge of who the caller is,
3042 * it will not call apm_ops.stop() to stop the DMA operation.
3043 * Calling apm_ops.stop here to make sure we stop the DMA.
3044 */
3045 priv->cfg->ops->lib->apm_ops.stop(priv);
3046
3047 pci_save_state(pdev);
3048 pci_disable_device(pdev);
3049 pci_set_power_state(pdev, PCI_D3hot);
3050
3051 return 0;
3052 }
3053 EXPORT_SYMBOL(iwl_pci_suspend);
3054
3055 int iwl_pci_resume(struct pci_dev *pdev)
3056 {
3057 struct iwl_priv *priv = pci_get_drvdata(pdev);
3058 int ret;
3059
3060 pci_set_power_state(pdev, PCI_D0);
3061 ret = pci_enable_device(pdev);
3062 if (ret)
3063 return ret;
3064 pci_restore_state(pdev);
3065 iwl_enable_interrupts(priv);
3066
3067 return 0;
3068 }
3069 EXPORT_SYMBOL(iwl_pci_resume);
3070
3071 #endif /* CONFIG_PM */
Linux kernel - Deliverables
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