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iwlwifi: clarify and clean up chain settings
[linux-2.6/linux-acpi-2.6/ibm-acpi-2.6.git] / drivers / net / wireless / iwlwifi / iwl-core.c
blob2908bff49a3bccb93e88318720762cb1a06ca3b1
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 /* Determine how many receiver/antenna chains to use.
952 * More provides better reception via diversity. Fewer saves power.
953 * MIMO (dual stream) requires at least 2, but works better with 3.
954 * This does not determine *which* chains to use, just how many.
955 */
956 static int iwl_get_active_rx_chain_count(struct iwl_priv *priv)
957 {
958 /* # of Rx chains to use when expecting MIMO. */
959 if (is_single_rx_stream(priv))
960 return IWL_NUM_RX_CHAINS_SINGLE;
961 else
962 return IWL_NUM_RX_CHAINS_MULTIPLE;
963 }
964
965 static int iwl_get_idle_rx_chain_count(struct iwl_priv *priv, int active_cnt)
966 {
967 bool is_cam = !test_bit(STATUS_POWER_PMI, &priv->status);
968
969 /* # Rx chains when idling and maybe trying to save power */
970
971 /*
972 * XXX: this is incorrect!!
973 * we always indicate to the AP that
974 * our SM PS mode is "disabled"
975 */
976
977 return is_cam ? active_cnt : IWL_NUM_IDLE_CHAINS_SINGLE;
978 }
979
980 /* up to 4 chains */
981 static u8 iwl_count_chain_bitmap(u32 chain_bitmap)
982 {
983 u8 res;
984 res = (chain_bitmap & BIT(0)) >> 0;
985 res += (chain_bitmap & BIT(1)) >> 1;
986 res += (chain_bitmap & BIT(2)) >> 2;
987 res += (chain_bitmap & BIT(4)) >> 4;
988 return res;
989 }
990
991 /**
992 * iwl_is_monitor_mode - Determine if interface in monitor mode
993 *
994 * priv->iw_mode is set in add_interface, but add_interface is
995 * never called for monitor mode. The only way mac80211 informs us about
996 * monitor mode is through configuring filters (call to configure_filter).
997 */
998 bool iwl_is_monitor_mode(struct iwl_priv *priv)
999 {
1000 return !!(priv->staging_rxon.filter_flags & RXON_FILTER_PROMISC_MSK);
1001 }
1002 EXPORT_SYMBOL(iwl_is_monitor_mode);
1003
1004 /**
1005 * iwl_set_rxon_chain - Set up Rx chain usage in "staging" RXON image
1006 *
1007 * Selects how many and which Rx receivers/antennas/chains to use.
1008 * This should not be used for scan command ... it puts data in wrong place.
1009 */
1010 void iwl_set_rxon_chain(struct iwl_priv *priv)
1011 {
1012 bool is_single = is_single_rx_stream(priv);
1013 bool is_cam = !test_bit(STATUS_POWER_PMI, &priv->status);
1014 u8 idle_rx_cnt, active_rx_cnt, valid_rx_cnt;
1015 u32 active_chains;
1016 u16 rx_chain;
1017
1018 /* Tell uCode which antennas are actually connected.
1019 * Before first association, we assume all antennas are connected.
1020 * Just after first association, iwl_chain_noise_calibration()
1021 * checks which antennas actually *are* connected. */
1022 if (priv->chain_noise_data.active_chains)
1023 active_chains = priv->chain_noise_data.active_chains;
1024 else
1025 active_chains = priv->hw_params.valid_rx_ant;
1026
1027 rx_chain = active_chains << RXON_RX_CHAIN_VALID_POS;
1028
1029 /* How many receivers should we use? */
1030 active_rx_cnt = iwl_get_active_rx_chain_count(priv);
1031 idle_rx_cnt = iwl_get_idle_rx_chain_count(priv, active_rx_cnt);
1032
1033
1034 /* correct rx chain count according hw settings
1035 * and chain noise calibration
1036 */
1037 valid_rx_cnt = iwl_count_chain_bitmap(active_chains);
1038 if (valid_rx_cnt < active_rx_cnt)
1039 active_rx_cnt = valid_rx_cnt;
1040
1041 if (valid_rx_cnt < idle_rx_cnt)
1042 idle_rx_cnt = valid_rx_cnt;
1043
1044 rx_chain |= active_rx_cnt << RXON_RX_CHAIN_MIMO_CNT_POS;
1045 rx_chain |= idle_rx_cnt << RXON_RX_CHAIN_CNT_POS;
1046
1047 /* copied from 'iwl_bg_request_scan()' */
1048 /* Force use of chains B and C (0x6) for Rx for 4965
1049 * Avoid A (0x1) because of its off-channel reception on A-band.
1050 * MIMO is not used here, but value is required */
1051 if (iwl_is_monitor_mode(priv) &&
1052 !(priv->staging_rxon.flags & RXON_FLG_BAND_24G_MSK) &&
1053 ((priv->hw_rev & CSR_HW_REV_TYPE_MSK) == CSR_HW_REV_TYPE_4965)) {
1054 rx_chain = ANT_ABC << RXON_RX_CHAIN_VALID_POS;
1055 rx_chain |= ANT_BC << RXON_RX_CHAIN_FORCE_SEL_POS;
1056 rx_chain |= ANT_ABC << RXON_RX_CHAIN_FORCE_MIMO_SEL_POS;
1057 rx_chain |= 0x1 << RXON_RX_CHAIN_DRIVER_FORCE_POS;
1058 }
1059
1060 priv->staging_rxon.rx_chain = cpu_to_le16(rx_chain);
1061
1062 if (!is_single && (active_rx_cnt >= IWL_NUM_RX_CHAINS_SINGLE) && is_cam)
1063 priv->staging_rxon.rx_chain |= RXON_RX_CHAIN_MIMO_FORCE_MSK;
1064 else
1065 priv->staging_rxon.rx_chain &= ~RXON_RX_CHAIN_MIMO_FORCE_MSK;
1066
1067 IWL_DEBUG_ASSOC(priv, "rx_chain=0x%X active=%d idle=%d\n",
1068 priv->staging_rxon.rx_chain,
1069 active_rx_cnt, idle_rx_cnt);
1070
1071 WARN_ON(active_rx_cnt == 0 || idle_rx_cnt == 0 ||
1072 active_rx_cnt < idle_rx_cnt);
1073 }
1074 EXPORT_SYMBOL(iwl_set_rxon_chain);
1075
1076 /**
1077 * iwl_set_rxon_channel - Set the phymode and channel values in staging RXON
1078 * @phymode: MODE_IEEE80211A sets to 5.2GHz; all else set to 2.4GHz
1079 * @channel: Any channel valid for the requested phymode
1080
1081 * In addition to setting the staging RXON, priv->phymode is also set.
1082 *
1083 * NOTE: Does not commit to the hardware; it sets appropriate bit fields
1084 * in the staging RXON flag structure based on the phymode
1085 */
1086 int iwl_set_rxon_channel(struct iwl_priv *priv, struct ieee80211_channel *ch)
1087 {
1088 enum ieee80211_band band = ch->band;
1089 u16 channel = ieee80211_frequency_to_channel(ch->center_freq);
1090
1091 if (!iwl_get_channel_info(priv, band, channel)) {
1092 IWL_DEBUG_INFO(priv, "Could not set channel to %d [%d]\n",
1093 channel, band);
1094 return -EINVAL;
1095 }
1096
1097 if ((le16_to_cpu(priv->staging_rxon.channel) == channel) &&
1098 (priv->band == band))
1099 return 0;
1100
1101 priv->staging_rxon.channel = cpu_to_le16(channel);
1102 if (band == IEEE80211_BAND_5GHZ)
1103 priv->staging_rxon.flags &= ~RXON_FLG_BAND_24G_MSK;
1104 else
1105 priv->staging_rxon.flags |= RXON_FLG_BAND_24G_MSK;
1106
1107 priv->band = band;
1108
1109 IWL_DEBUG_INFO(priv, "Staging channel set to %d [%d]\n", channel, band);
1110
1111 return 0;
1112 }
1113 EXPORT_SYMBOL(iwl_set_rxon_channel);
1114
1115 void iwl_set_flags_for_band(struct iwl_priv *priv,
1116 enum ieee80211_band band)
1117 {
1118 if (band == IEEE80211_BAND_5GHZ) {
1119 priv->staging_rxon.flags &=
1120 ~(RXON_FLG_BAND_24G_MSK | RXON_FLG_AUTO_DETECT_MSK
1121 | RXON_FLG_CCK_MSK);
1122 priv->staging_rxon.flags |= RXON_FLG_SHORT_SLOT_MSK;
1123 } else {
1124 /* Copied from iwl_post_associate() */
1125 if (priv->assoc_capability & WLAN_CAPABILITY_SHORT_SLOT_TIME)
1126 priv->staging_rxon.flags |= RXON_FLG_SHORT_SLOT_MSK;
1127 else
1128 priv->staging_rxon.flags &= ~RXON_FLG_SHORT_SLOT_MSK;
1129
1130 if (priv->iw_mode == NL80211_IFTYPE_ADHOC)
1131 priv->staging_rxon.flags &= ~RXON_FLG_SHORT_SLOT_MSK;
1132
1133 priv->staging_rxon.flags |= RXON_FLG_BAND_24G_MSK;
1134 priv->staging_rxon.flags |= RXON_FLG_AUTO_DETECT_MSK;
1135 priv->staging_rxon.flags &= ~RXON_FLG_CCK_MSK;
1136 }
1137 }
1138
1139 /*
1140 * initialize rxon structure with default values from eeprom
1141 */
1142 void iwl_connection_init_rx_config(struct iwl_priv *priv, int mode)
1143 {
1144 const struct iwl_channel_info *ch_info;
1145
1146 memset(&priv->staging_rxon, 0, sizeof(priv->staging_rxon));
1147
1148 switch (mode) {
1149 case NL80211_IFTYPE_AP:
1150 priv->staging_rxon.dev_type = RXON_DEV_TYPE_AP;
1151 break;
1152
1153 case NL80211_IFTYPE_STATION:
1154 priv->staging_rxon.dev_type = RXON_DEV_TYPE_ESS;
1155 priv->staging_rxon.filter_flags = RXON_FILTER_ACCEPT_GRP_MSK;
1156 break;
1157
1158 case NL80211_IFTYPE_ADHOC:
1159 priv->staging_rxon.dev_type = RXON_DEV_TYPE_IBSS;
1160 priv->staging_rxon.flags = RXON_FLG_SHORT_PREAMBLE_MSK;
1161 priv->staging_rxon.filter_flags = RXON_FILTER_BCON_AWARE_MSK |
1162 RXON_FILTER_ACCEPT_GRP_MSK;
1163 break;
1164
1165 default:
1166 IWL_ERR(priv, "Unsupported interface type %d\n", mode);
1167 break;
1168 }
1169
1170 #if 0
1171 /* TODO: Figure out when short_preamble would be set and cache from
1172 * that */
1173 if (!hw_to_local(priv->hw)->short_preamble)
1174 priv->staging_rxon.flags &= ~RXON_FLG_SHORT_PREAMBLE_MSK;
1175 else
1176 priv->staging_rxon.flags |= RXON_FLG_SHORT_PREAMBLE_MSK;
1177 #endif
1178
1179 ch_info = iwl_get_channel_info(priv, priv->band,
1180 le16_to_cpu(priv->active_rxon.channel));
1181
1182 if (!ch_info)
1183 ch_info = &priv->channel_info[0];
1184
1185 /*
1186 * in some case A channels are all non IBSS
1187 * in this case force B/G channel
1188 */
1189 if ((priv->iw_mode == NL80211_IFTYPE_ADHOC) &&
1190 !(is_channel_ibss(ch_info)))
1191 ch_info = &priv->channel_info[0];
1192
1193 priv->staging_rxon.channel = cpu_to_le16(ch_info->channel);
1194 priv->band = ch_info->band;
1195
1196 iwl_set_flags_for_band(priv, priv->band);
1197
1198 priv->staging_rxon.ofdm_basic_rates =
1199 (IWL_OFDM_RATES_MASK >> IWL_FIRST_OFDM_RATE) & 0xFF;
1200 priv->staging_rxon.cck_basic_rates =
1201 (IWL_CCK_RATES_MASK >> IWL_FIRST_CCK_RATE) & 0xF;
1202
1203 /* clear both MIX and PURE40 mode flag */
1204 priv->staging_rxon.flags &= ~(RXON_FLG_CHANNEL_MODE_MIXED |
1205 RXON_FLG_CHANNEL_MODE_PURE_40);
1206 memcpy(priv->staging_rxon.node_addr, priv->mac_addr, ETH_ALEN);
1207 memcpy(priv->staging_rxon.wlap_bssid_addr, priv->mac_addr, ETH_ALEN);
1208 priv->staging_rxon.ofdm_ht_single_stream_basic_rates = 0xff;
1209 priv->staging_rxon.ofdm_ht_dual_stream_basic_rates = 0xff;
1210 priv->staging_rxon.ofdm_ht_triple_stream_basic_rates = 0xff;
1211 }
1212 EXPORT_SYMBOL(iwl_connection_init_rx_config);
1213
1214 static void iwl_set_rate(struct iwl_priv *priv)
1215 {
1216 const struct ieee80211_supported_band *hw = NULL;
1217 struct ieee80211_rate *rate;
1218 int i;
1219
1220 hw = iwl_get_hw_mode(priv, priv->band);
1221 if (!hw) {
1222 IWL_ERR(priv, "Failed to set rate: unable to get hw mode\n");
1223 return;
1224 }
1225
1226 priv->active_rate = 0;
1227 priv->active_rate_basic = 0;
1228
1229 for (i = 0; i < hw->n_bitrates; i++) {
1230 rate = &(hw->bitrates[i]);
1231 if (rate->hw_value < IWL_RATE_COUNT_LEGACY)
1232 priv->active_rate |= (1 << rate->hw_value);
1233 }
1234
1235 IWL_DEBUG_RATE(priv, "Set active_rate = %0x, active_rate_basic = %0x\n",
1236 priv->active_rate, priv->active_rate_basic);
1237
1238 /*
1239 * If a basic rate is configured, then use it (adding IWL_RATE_1M_MASK)
1240 * otherwise set it to the default of all CCK rates and 6, 12, 24 for
1241 * OFDM
1242 */
1243 if (priv->active_rate_basic & IWL_CCK_BASIC_RATES_MASK)
1244 priv->staging_rxon.cck_basic_rates =
1245 ((priv->active_rate_basic &
1246 IWL_CCK_RATES_MASK) >> IWL_FIRST_CCK_RATE) & 0xF;
1247 else
1248 priv->staging_rxon.cck_basic_rates =
1249 (IWL_CCK_BASIC_RATES_MASK >> IWL_FIRST_CCK_RATE) & 0xF;
1250
1251 if (priv->active_rate_basic & IWL_OFDM_BASIC_RATES_MASK)
1252 priv->staging_rxon.ofdm_basic_rates =
1253 ((priv->active_rate_basic &
1254 (IWL_OFDM_BASIC_RATES_MASK | IWL_RATE_6M_MASK)) >>
1255 IWL_FIRST_OFDM_RATE) & 0xFF;
1256 else
1257 priv->staging_rxon.ofdm_basic_rates =
1258 (IWL_OFDM_BASIC_RATES_MASK >> IWL_FIRST_OFDM_RATE) & 0xFF;
1259 }
1260
1261 void iwl_rx_csa(struct iwl_priv *priv, struct iwl_rx_mem_buffer *rxb)
1262 {
1263 struct iwl_rx_packet *pkt = (struct iwl_rx_packet *)rxb->skb->data;
1264 struct iwl_rxon_cmd *rxon = (void *)&priv->active_rxon;
1265 struct iwl_csa_notification *csa = &(pkt->u.csa_notif);
1266 IWL_DEBUG_11H(priv, "CSA notif: channel %d, status %d\n",
1267 le16_to_cpu(csa->channel), le32_to_cpu(csa->status));
1268 rxon->channel = csa->channel;
1269 priv->staging_rxon.channel = csa->channel;
1270 }
1271 EXPORT_SYMBOL(iwl_rx_csa);
1272
1273 #ifdef CONFIG_IWLWIFI_DEBUG
1274 static void iwl_print_rx_config_cmd(struct iwl_priv *priv)
1275 {
1276 struct iwl_rxon_cmd *rxon = &priv->staging_rxon;
1277
1278 IWL_DEBUG_RADIO(priv, "RX CONFIG:\n");
1279 iwl_print_hex_dump(priv, IWL_DL_RADIO, (u8 *) rxon, sizeof(*rxon));
1280 IWL_DEBUG_RADIO(priv, "u16 channel: 0x%x\n", le16_to_cpu(rxon->channel));
1281 IWL_DEBUG_RADIO(priv, "u32 flags: 0x%08X\n", le32_to_cpu(rxon->flags));
1282 IWL_DEBUG_RADIO(priv, "u32 filter_flags: 0x%08x\n",
1283 le32_to_cpu(rxon->filter_flags));
1284 IWL_DEBUG_RADIO(priv, "u8 dev_type: 0x%x\n", rxon->dev_type);
1285 IWL_DEBUG_RADIO(priv, "u8 ofdm_basic_rates: 0x%02x\n",
1286 rxon->ofdm_basic_rates);
1287 IWL_DEBUG_RADIO(priv, "u8 cck_basic_rates: 0x%02x\n", rxon->cck_basic_rates);
1288 IWL_DEBUG_RADIO(priv, "u8[6] node_addr: %pM\n", rxon->node_addr);
1289 IWL_DEBUG_RADIO(priv, "u8[6] bssid_addr: %pM\n", rxon->bssid_addr);
1290 IWL_DEBUG_RADIO(priv, "u16 assoc_id: 0x%x\n", le16_to_cpu(rxon->assoc_id));
1291 }
1292 #endif
1293 /**
1294 * iwl_irq_handle_error - called for HW or SW error interrupt from card
1295 */
1296 void iwl_irq_handle_error(struct iwl_priv *priv)
1297 {
1298 /* Set the FW error flag -- cleared on iwl_down */
1299 set_bit(STATUS_FW_ERROR, &priv->status);
1300
1301 /* Cancel currently queued command. */
1302 clear_bit(STATUS_HCMD_ACTIVE, &priv->status);
1303
1304 #ifdef CONFIG_IWLWIFI_DEBUG
1305 if (iwl_get_debug_level(priv) & IWL_DL_FW_ERRORS) {
1306 priv->cfg->ops->lib->dump_nic_error_log(priv);
1307 priv->cfg->ops->lib->dump_nic_event_log(priv);
1308 iwl_print_rx_config_cmd(priv);
1309 }
1310 #endif
1311
1312 wake_up_interruptible(&priv->wait_command_queue);
1313
1314 /* Keep the restart process from trying to send host
1315 * commands by clearing the INIT status bit */
1316 clear_bit(STATUS_READY, &priv->status);
1317
1318 if (!test_bit(STATUS_EXIT_PENDING, &priv->status)) {
1319 IWL_DEBUG(priv, IWL_DL_FW_ERRORS,
1320 "Restarting adapter due to uCode error.\n");
1321
1322 if (priv->cfg->mod_params->restart_fw)
1323 queue_work(priv->workqueue, &priv->restart);
1324 }
1325 }
1326 EXPORT_SYMBOL(iwl_irq_handle_error);
1327
1328 void iwl_configure_filter(struct ieee80211_hw *hw,
1329 unsigned int changed_flags,
1330 unsigned int *total_flags,
1331 u64 multicast)
1332 {
1333 struct iwl_priv *priv = hw->priv;
1334 __le32 *filter_flags = &priv->staging_rxon.filter_flags;
1335
1336 IWL_DEBUG_MAC80211(priv, "Enter: changed: 0x%x, total: 0x%x\n",
1337 changed_flags, *total_flags);
1338
1339 if (changed_flags & (FIF_OTHER_BSS | FIF_PROMISC_IN_BSS)) {
1340 if (*total_flags & (FIF_OTHER_BSS | FIF_PROMISC_IN_BSS))
1341 *filter_flags |= RXON_FILTER_PROMISC_MSK;
1342 else
1343 *filter_flags &= ~RXON_FILTER_PROMISC_MSK;
1344 }
1345 if (changed_flags & FIF_ALLMULTI) {
1346 if (*total_flags & FIF_ALLMULTI)
1347 *filter_flags |= RXON_FILTER_ACCEPT_GRP_MSK;
1348 else
1349 *filter_flags &= ~RXON_FILTER_ACCEPT_GRP_MSK;
1350 }
1351 if (changed_flags & FIF_CONTROL) {
1352 if (*total_flags & FIF_CONTROL)
1353 *filter_flags |= RXON_FILTER_CTL2HOST_MSK;
1354 else
1355 *filter_flags &= ~RXON_FILTER_CTL2HOST_MSK;
1356 }
1357 if (changed_flags & FIF_BCN_PRBRESP_PROMISC) {
1358 if (*total_flags & FIF_BCN_PRBRESP_PROMISC)
1359 *filter_flags |= RXON_FILTER_BCON_AWARE_MSK;
1360 else
1361 *filter_flags &= ~RXON_FILTER_BCON_AWARE_MSK;
1362 }
1363
1364 /* We avoid iwl_commit_rxon here to commit the new filter flags
1365 * since mac80211 will call ieee80211_hw_config immediately.
1366 * (mc_list is not supported at this time). Otherwise, we need to
1367 * queue a background iwl_commit_rxon work.
1368 */
1369
1370 *total_flags &= FIF_OTHER_BSS | FIF_ALLMULTI | FIF_PROMISC_IN_BSS |
1371 FIF_BCN_PRBRESP_PROMISC | FIF_CONTROL;
1372 }
1373 EXPORT_SYMBOL(iwl_configure_filter);
1374
1375 int iwl_setup_mac(struct iwl_priv *priv)
1376 {
1377 int ret;
1378 struct ieee80211_hw *hw = priv->hw;
1379 hw->rate_control_algorithm = "iwl-agn-rs";
1380
1381 /* Tell mac80211 our characteristics */
1382 hw->flags = IEEE80211_HW_SIGNAL_DBM |
1383 IEEE80211_HW_NOISE_DBM |
1384 IEEE80211_HW_AMPDU_AGGREGATION |
1385 IEEE80211_HW_SPECTRUM_MGMT;
1386
1387 if (!priv->cfg->broken_powersave)
1388 hw->flags |= IEEE80211_HW_SUPPORTS_PS |
1389 IEEE80211_HW_SUPPORTS_DYNAMIC_PS;
1390
1391 hw->wiphy->interface_modes =
1392 BIT(NL80211_IFTYPE_STATION) |
1393 BIT(NL80211_IFTYPE_ADHOC);
1394
1395 hw->wiphy->custom_regulatory = true;
1396
1397 /* Firmware does not support this */
1398 hw->wiphy->disable_beacon_hints = true;
1399
1400 /*
1401 * For now, disable PS by default because it affects
1402 * RX performance significantly.
1403 */
1404 hw->wiphy->ps_default = false;
1405
1406 hw->wiphy->max_scan_ssids = PROBE_OPTION_MAX;
1407 /* we create the 802.11 header and a zero-length SSID element */
1408 hw->wiphy->max_scan_ie_len = IWL_MAX_PROBE_REQUEST - 24 - 2;
1409
1410 /* Default value; 4 EDCA QOS priorities */
1411 hw->queues = 4;
1412
1413 hw->max_listen_interval = IWL_CONN_MAX_LISTEN_INTERVAL;
1414
1415 if (priv->bands[IEEE80211_BAND_2GHZ].n_channels)
1416 priv->hw->wiphy->bands[IEEE80211_BAND_2GHZ] =
1417 &priv->bands[IEEE80211_BAND_2GHZ];
1418 if (priv->bands[IEEE80211_BAND_5GHZ].n_channels)
1419 priv->hw->wiphy->bands[IEEE80211_BAND_5GHZ] =
1420 &priv->bands[IEEE80211_BAND_5GHZ];
1421
1422 ret = ieee80211_register_hw(priv->hw);
1423 if (ret) {
1424 IWL_ERR(priv, "Failed to register hw (error %d)\n", ret);
1425 return ret;
1426 }
1427 priv->mac80211_registered = 1;
1428
1429 return 0;
1430 }
1431 EXPORT_SYMBOL(iwl_setup_mac);
1432
1433 int iwl_set_hw_params(struct iwl_priv *priv)
1434 {
1435 priv->hw_params.max_rxq_size = RX_QUEUE_SIZE;
1436 priv->hw_params.max_rxq_log = RX_QUEUE_SIZE_LOG;
1437 if (priv->cfg->mod_params->amsdu_size_8K)
1438 priv->hw_params.rx_buf_size = IWL_RX_BUF_SIZE_8K;
1439 else
1440 priv->hw_params.rx_buf_size = IWL_RX_BUF_SIZE_4K;
1441 priv->hw_params.max_pkt_size = priv->hw_params.rx_buf_size - 256;
1442
1443 priv->hw_params.max_beacon_itrvl = IWL_MAX_UCODE_BEACON_INTERVAL;
1444
1445 if (priv->cfg->mod_params->disable_11n)
1446 priv->cfg->sku &= ~IWL_SKU_N;
1447
1448 /* Device-specific setup */
1449 return priv->cfg->ops->lib->set_hw_params(priv);
1450 }
1451 EXPORT_SYMBOL(iwl_set_hw_params);
1452
1453 int iwl_init_drv(struct iwl_priv *priv)
1454 {
1455 int ret;
1456
1457 priv->ibss_beacon = NULL;
1458
1459 spin_lock_init(&priv->lock);
1460 spin_lock_init(&priv->sta_lock);
1461 spin_lock_init(&priv->hcmd_lock);
1462
1463 INIT_LIST_HEAD(&priv->free_frames);
1464
1465 mutex_init(&priv->mutex);
1466
1467 /* Clear the driver's (not device's) station table */
1468 iwl_clear_stations_table(priv);
1469
1470 priv->data_retry_limit = -1;
1471 priv->ieee_channels = NULL;
1472 priv->ieee_rates = NULL;
1473 priv->band = IEEE80211_BAND_2GHZ;
1474
1475 priv->iw_mode = NL80211_IFTYPE_STATION;
1476
1477 /* Choose which receivers/antennas to use */
1478 if (priv->cfg->ops->hcmd->set_rxon_chain)
1479 priv->cfg->ops->hcmd->set_rxon_chain(priv);
1480
1481 iwl_init_scan_params(priv);
1482
1483 iwl_reset_qos(priv);
1484
1485 priv->qos_data.qos_active = 0;
1486 priv->qos_data.qos_cap.val = 0;
1487
1488 priv->rates_mask = IWL_RATES_MASK;
1489 /* Set the tx_power_user_lmt to the lowest power level
1490 * this value will get overwritten by channel max power avg
1491 * from eeprom */
1492 priv->tx_power_user_lmt = IWL_TX_POWER_TARGET_POWER_MIN;
1493
1494 ret = iwl_init_channel_map(priv);
1495 if (ret) {
1496 IWL_ERR(priv, "initializing regulatory failed: %d\n", ret);
1497 goto err;
1498 }
1499
1500 ret = iwlcore_init_geos(priv);
1501 if (ret) {
1502 IWL_ERR(priv, "initializing geos failed: %d\n", ret);
1503 goto err_free_channel_map;
1504 }
1505 iwlcore_init_hw_rates(priv, priv->ieee_rates);
1506
1507 return 0;
1508
1509 err_free_channel_map:
1510 iwl_free_channel_map(priv);
1511 err:
1512 return ret;
1513 }
1514 EXPORT_SYMBOL(iwl_init_drv);
1515
1516 int iwl_set_tx_power(struct iwl_priv *priv, s8 tx_power, bool force)
1517 {
1518 int ret = 0;
1519 s8 prev_tx_power = priv->tx_power_user_lmt;
1520
1521 if (tx_power < IWL_TX_POWER_TARGET_POWER_MIN) {
1522 IWL_WARN(priv, "Requested user TXPOWER %d below lower limit %d.\n",
1523 tx_power,
1524 IWL_TX_POWER_TARGET_POWER_MIN);
1525 return -EINVAL;
1526 }
1527
1528 if (tx_power > priv->tx_power_device_lmt) {
1529 IWL_WARN(priv,
1530 "Requested user TXPOWER %d above upper limit %d.\n",
1531 tx_power, priv->tx_power_device_lmt);
1532 return -EINVAL;
1533 }
1534
1535 if (priv->tx_power_user_lmt != tx_power)
1536 force = true;
1537
1538 /* if nic is not up don't send command */
1539 if (iwl_is_ready_rf(priv)) {
1540 priv->tx_power_user_lmt = tx_power;
1541 if (force && priv->cfg->ops->lib->send_tx_power)
1542 ret = priv->cfg->ops->lib->send_tx_power(priv);
1543 else if (!priv->cfg->ops->lib->send_tx_power)
1544 ret = -EOPNOTSUPP;
1545 /*
1546 * if fail to set tx_power, restore the orig. tx power
1547 */
1548 if (ret)
1549 priv->tx_power_user_lmt = prev_tx_power;
1550 }
1551
1552 /*
1553 * Even this is an async host command, the command
1554 * will always report success from uCode
1555 * So once driver can placing the command into the queue
1556 * successfully, driver can use priv->tx_power_user_lmt
1557 * to reflect the current tx power
1558 */
1559 return ret;
1560 }
1561 EXPORT_SYMBOL(iwl_set_tx_power);
1562
1563 void iwl_uninit_drv(struct iwl_priv *priv)
1564 {
1565 iwl_calib_free_results(priv);
1566 iwlcore_free_geos(priv);
1567 iwl_free_channel_map(priv);
1568 kfree(priv->scan);
1569 }
1570 EXPORT_SYMBOL(iwl_uninit_drv);
1571
1572 #define ICT_COUNT (PAGE_SIZE/sizeof(u32))
1573
1574 /* Free dram table */
1575 void iwl_free_isr_ict(struct iwl_priv *priv)
1576 {
1577 if (priv->ict_tbl_vir) {
1578 pci_free_consistent(priv->pci_dev, (sizeof(u32) * ICT_COUNT) +
1579 PAGE_SIZE, priv->ict_tbl_vir,
1580 priv->ict_tbl_dma);
1581 priv->ict_tbl_vir = NULL;
1582 }
1583 }
1584 EXPORT_SYMBOL(iwl_free_isr_ict);
1585
1586
1587 /* allocate dram shared table it is a PAGE_SIZE aligned
1588 * also reset all data related to ICT table interrupt.
1589 */
1590 int iwl_alloc_isr_ict(struct iwl_priv *priv)
1591 {
1592
1593 if (priv->cfg->use_isr_legacy)
1594 return 0;
1595 /* allocate shrared data table */
1596 priv->ict_tbl_vir = pci_alloc_consistent(priv->pci_dev, (sizeof(u32) *
1597 ICT_COUNT) + PAGE_SIZE,
1598 &priv->ict_tbl_dma);
1599 if (!priv->ict_tbl_vir)
1600 return -ENOMEM;
1601
1602 /* align table to PAGE_SIZE boundry */
1603 priv->aligned_ict_tbl_dma = ALIGN(priv->ict_tbl_dma, PAGE_SIZE);
1604
1605 IWL_DEBUG_ISR(priv, "ict dma addr %Lx dma aligned %Lx diff %d\n",
1606 (unsigned long long)priv->ict_tbl_dma,
1607 (unsigned long long)priv->aligned_ict_tbl_dma,
1608 (int)(priv->aligned_ict_tbl_dma - priv->ict_tbl_dma));
1609
1610 priv->ict_tbl = priv->ict_tbl_vir +
1611 (priv->aligned_ict_tbl_dma - priv->ict_tbl_dma);
1612
1613 IWL_DEBUG_ISR(priv, "ict vir addr %p vir aligned %p diff %d\n",
1614 priv->ict_tbl, priv->ict_tbl_vir,
1615 (int)(priv->aligned_ict_tbl_dma - priv->ict_tbl_dma));
1616
1617 /* reset table and index to all 0 */
1618 memset(priv->ict_tbl_vir,0, (sizeof(u32) * ICT_COUNT) + PAGE_SIZE);
1619 priv->ict_index = 0;
1620
1621 /* add periodic RX interrupt */
1622 priv->inta_mask |= CSR_INT_BIT_RX_PERIODIC;
1623 return 0;
1624 }
1625 EXPORT_SYMBOL(iwl_alloc_isr_ict);
1626
1627 /* Device is going up inform it about using ICT interrupt table,
1628 * also we need to tell the driver to start using ICT interrupt.
1629 */
1630 int iwl_reset_ict(struct iwl_priv *priv)
1631 {
1632 u32 val;
1633 unsigned long flags;
1634
1635 if (!priv->ict_tbl_vir)
1636 return 0;
1637
1638 spin_lock_irqsave(&priv->lock, flags);
1639 iwl_disable_interrupts(priv);
1640
1641 memset(&priv->ict_tbl[0], 0, sizeof(u32) * ICT_COUNT);
1642
1643 val = priv->aligned_ict_tbl_dma >> PAGE_SHIFT;
1644
1645 val |= CSR_DRAM_INT_TBL_ENABLE;
1646 val |= CSR_DRAM_INIT_TBL_WRAP_CHECK;
1647
1648 IWL_DEBUG_ISR(priv, "CSR_DRAM_INT_TBL_REG =0x%X "
1649 "aligned dma address %Lx\n",
1650 val, (unsigned long long)priv->aligned_ict_tbl_dma);
1651
1652 iwl_write32(priv, CSR_DRAM_INT_TBL_REG, val);
1653 priv->use_ict = true;
1654 priv->ict_index = 0;
1655 iwl_write32(priv, CSR_INT, priv->inta_mask);
1656 iwl_enable_interrupts(priv);
1657 spin_unlock_irqrestore(&priv->lock, flags);
1658
1659 return 0;
1660 }
1661 EXPORT_SYMBOL(iwl_reset_ict);
1662
1663 /* Device is going down disable ict interrupt usage */
1664 void iwl_disable_ict(struct iwl_priv *priv)
1665 {
1666 unsigned long flags;
1667
1668 spin_lock_irqsave(&priv->lock, flags);
1669 priv->use_ict = false;
1670 spin_unlock_irqrestore(&priv->lock, flags);
1671 }
1672 EXPORT_SYMBOL(iwl_disable_ict);
1673
1674 /* interrupt handler using ict table, with this interrupt driver will
1675 * stop using INTA register to get device's interrupt, reading this register
1676 * is expensive, device will write interrupts in ICT dram table, increment
1677 * index then will fire interrupt to driver, driver will OR all ICT table
1678 * entries from current index up to table entry with 0 value. the result is
1679 * the interrupt we need to service, driver will set the entries back to 0 and
1680 * set index.
1681 */
1682 irqreturn_t iwl_isr_ict(int irq, void *data)
1683 {
1684 struct iwl_priv *priv = data;
1685 u32 inta, inta_mask;
1686 u32 val = 0;
1687
1688 if (!priv)
1689 return IRQ_NONE;
1690
1691 /* dram interrupt table not set yet,
1692 * use legacy interrupt.
1693 */
1694 if (!priv->use_ict)
1695 return iwl_isr(irq, data);
1696
1697 spin_lock(&priv->lock);
1698
1699 /* Disable (but don't clear!) interrupts here to avoid
1700 * back-to-back ISRs and sporadic interrupts from our NIC.
1701 * If we have something to service, the tasklet will re-enable ints.
1702 * If we *don't* have something, we'll re-enable before leaving here.
1703 */
1704 inta_mask = iwl_read32(priv, CSR_INT_MASK); /* just for debug */
1705 iwl_write32(priv, CSR_INT_MASK, 0x00000000);
1706
1707
1708 /* Ignore interrupt if there's nothing in NIC to service.
1709 * This may be due to IRQ shared with another device,
1710 * or due to sporadic interrupts thrown from our NIC. */
1711 if (!priv->ict_tbl[priv->ict_index]) {
1712 IWL_DEBUG_ISR(priv, "Ignore interrupt, inta == 0\n");
1713 goto none;
1714 }
1715
1716 /* read all entries that not 0 start with ict_index */
1717 while (priv->ict_tbl[priv->ict_index]) {
1718
1719 val |= le32_to_cpu(priv->ict_tbl[priv->ict_index]);
1720 IWL_DEBUG_ISR(priv, "ICT index %d value 0x%08X\n",
1721 priv->ict_index,
1722 le32_to_cpu(priv->ict_tbl[priv->ict_index]));
1723 priv->ict_tbl[priv->ict_index] = 0;
1724 priv->ict_index = iwl_queue_inc_wrap(priv->ict_index,
1725 ICT_COUNT);
1726
1727 }
1728
1729 /* We should not get this value, just ignore it. */
1730 if (val == 0xffffffff)
1731 val = 0;
1732
1733 inta = (0xff & val) | ((0xff00 & val) << 16);
1734 IWL_DEBUG_ISR(priv, "ISR inta 0x%08x, enabled 0x%08x ict 0x%08x\n",
1735 inta, inta_mask, val);
1736
1737 inta &= priv->inta_mask;
1738 priv->inta |= inta;
1739
1740 /* iwl_irq_tasklet() will service interrupts and re-enable them */
1741 if (likely(inta))
1742 tasklet_schedule(&priv->irq_tasklet);
1743 else if (test_bit(STATUS_INT_ENABLED, &priv->status) && !priv->inta) {
1744 /* Allow interrupt if was disabled by this handler and
1745 * no tasklet was schedules, We should not enable interrupt,
1746 * tasklet will enable it.
1747 */
1748 iwl_enable_interrupts(priv);
1749 }
1750
1751 spin_unlock(&priv->lock);
1752 return IRQ_HANDLED;
1753
1754 none:
1755 /* re-enable interrupts here since we don't have anything to service.
1756 * only Re-enable if disabled by irq.
1757 */
1758 if (test_bit(STATUS_INT_ENABLED, &priv->status) && !priv->inta)
1759 iwl_enable_interrupts(priv);
1760
1761 spin_unlock(&priv->lock);
1762 return IRQ_NONE;
1763 }
1764 EXPORT_SYMBOL(iwl_isr_ict);
1765
1766
1767 static irqreturn_t iwl_isr(int irq, void *data)
1768 {
1769 struct iwl_priv *priv = data;
1770 u32 inta, inta_mask;
1771 #ifdef CONFIG_IWLWIFI_DEBUG
1772 u32 inta_fh;
1773 #endif
1774 if (!priv)
1775 return IRQ_NONE;
1776
1777 spin_lock(&priv->lock);
1778
1779 /* Disable (but don't clear!) interrupts here to avoid
1780 * back-to-back ISRs and sporadic interrupts from our NIC.
1781 * If we have something to service, the tasklet will re-enable ints.
1782 * If we *don't* have something, we'll re-enable before leaving here. */
1783 inta_mask = iwl_read32(priv, CSR_INT_MASK); /* just for debug */
1784 iwl_write32(priv, CSR_INT_MASK, 0x00000000);
1785
1786 /* Discover which interrupts are active/pending */
1787 inta = iwl_read32(priv, CSR_INT);
1788
1789 /* Ignore interrupt if there's nothing in NIC to service.
1790 * This may be due to IRQ shared with another device,
1791 * or due to sporadic interrupts thrown from our NIC. */
1792 if (!inta) {
1793 IWL_DEBUG_ISR(priv, "Ignore interrupt, inta == 0\n");
1794 goto none;
1795 }
1796
1797 if ((inta == 0xFFFFFFFF) || ((inta & 0xFFFFFFF0) == 0xa5a5a5a0)) {
1798 /* Hardware disappeared. It might have already raised
1799 * an interrupt */
1800 IWL_WARN(priv, "HARDWARE GONE?? INTA == 0x%08x\n", inta);
1801 goto unplugged;
1802 }
1803
1804 #ifdef CONFIG_IWLWIFI_DEBUG
1805 if (iwl_get_debug_level(priv) & (IWL_DL_ISR)) {
1806 inta_fh = iwl_read32(priv, CSR_FH_INT_STATUS);
1807 IWL_DEBUG_ISR(priv, "ISR inta 0x%08x, enabled 0x%08x, "
1808 "fh 0x%08x\n", inta, inta_mask, inta_fh);
1809 }
1810 #endif
1811
1812 priv->inta |= inta;
1813 /* iwl_irq_tasklet() will service interrupts and re-enable them */
1814 if (likely(inta))
1815 tasklet_schedule(&priv->irq_tasklet);
1816 else if (test_bit(STATUS_INT_ENABLED, &priv->status) && !priv->inta)
1817 iwl_enable_interrupts(priv);
1818
1819 unplugged:
1820 spin_unlock(&priv->lock);
1821 return IRQ_HANDLED;
1822
1823 none:
1824 /* re-enable interrupts here since we don't have anything to service. */
1825 /* only Re-enable if diabled by irq and no schedules tasklet. */
1826 if (test_bit(STATUS_INT_ENABLED, &priv->status) && !priv->inta)
1827 iwl_enable_interrupts(priv);
1828
1829 spin_unlock(&priv->lock);
1830 return IRQ_NONE;
1831 }
1832
1833 irqreturn_t iwl_isr_legacy(int irq, void *data)
1834 {
1835 struct iwl_priv *priv = data;
1836 u32 inta, inta_mask;
1837 u32 inta_fh;
1838 if (!priv)
1839 return IRQ_NONE;
1840
1841 spin_lock(&priv->lock);
1842
1843 /* Disable (but don't clear!) interrupts here to avoid
1844 * back-to-back ISRs and sporadic interrupts from our NIC.
1845 * If we have something to service, the tasklet will re-enable ints.
1846 * If we *don't* have something, we'll re-enable before leaving here. */
1847 inta_mask = iwl_read32(priv, CSR_INT_MASK); /* just for debug */
1848 iwl_write32(priv, CSR_INT_MASK, 0x00000000);
1849
1850 /* Discover which interrupts are active/pending */
1851 inta = iwl_read32(priv, CSR_INT);
1852 inta_fh = iwl_read32(priv, CSR_FH_INT_STATUS);
1853
1854 /* Ignore interrupt if there's nothing in NIC to service.
1855 * This may be due to IRQ shared with another device,
1856 * or due to sporadic interrupts thrown from our NIC. */
1857 if (!inta && !inta_fh) {
1858 IWL_DEBUG_ISR(priv, "Ignore interrupt, inta == 0, inta_fh == 0\n");
1859 goto none;
1860 }
1861
1862 if ((inta == 0xFFFFFFFF) || ((inta & 0xFFFFFFF0) == 0xa5a5a5a0)) {
1863 /* Hardware disappeared. It might have already raised
1864 * an interrupt */
1865 IWL_WARN(priv, "HARDWARE GONE?? INTA == 0x%08x\n", inta);
1866 goto unplugged;
1867 }
1868
1869 IWL_DEBUG_ISR(priv, "ISR inta 0x%08x, enabled 0x%08x, fh 0x%08x\n",
1870 inta, inta_mask, inta_fh);
1871
1872 inta &= ~CSR_INT_BIT_SCD;
1873
1874 /* iwl_irq_tasklet() will service interrupts and re-enable them */
1875 if (likely(inta || inta_fh))
1876 tasklet_schedule(&priv->irq_tasklet);
1877
1878 unplugged:
1879 spin_unlock(&priv->lock);
1880 return IRQ_HANDLED;
1881
1882 none:
1883 /* re-enable interrupts here since we don't have anything to service. */
1884 /* only Re-enable if diabled by irq */
1885 if (test_bit(STATUS_INT_ENABLED, &priv->status))
1886 iwl_enable_interrupts(priv);
1887 spin_unlock(&priv->lock);
1888 return IRQ_NONE;
1889 }
1890 EXPORT_SYMBOL(iwl_isr_legacy);
1891
1892 int iwl_send_bt_config(struct iwl_priv *priv)
1893 {
1894 struct iwl_bt_cmd bt_cmd = {
1895 .flags = 3,
1896 .lead_time = 0xAA,
1897 .max_kill = 1,
1898 .kill_ack_mask = 0,
1899 .kill_cts_mask = 0,
1900 };
1901
1902 return iwl_send_cmd_pdu(priv, REPLY_BT_CONFIG,
1903 sizeof(struct iwl_bt_cmd), &bt_cmd);
1904 }
1905 EXPORT_SYMBOL(iwl_send_bt_config);
1906
1907 int iwl_send_statistics_request(struct iwl_priv *priv, u8 flags)
1908 {
1909 u32 stat_flags = 0;
1910 struct iwl_host_cmd cmd = {
1911 .id = REPLY_STATISTICS_CMD,
1912 .flags = flags,
1913 .len = sizeof(stat_flags),
1914 .data = (u8 *) &stat_flags,
1915 };
1916 return iwl_send_cmd(priv, &cmd);
1917 }
1918 EXPORT_SYMBOL(iwl_send_statistics_request);
1919
1920 /**
1921 * iwl_verify_inst_sparse - verify runtime uCode image in card vs. host,
1922 * using sample data 100 bytes apart. If these sample points are good,
1923 * it's a pretty good bet that everything between them is good, too.
1924 */
1925 static int iwlcore_verify_inst_sparse(struct iwl_priv *priv, __le32 *image, u32 len)
1926 {
1927 u32 val;
1928 int ret = 0;
1929 u32 errcnt = 0;
1930 u32 i;
1931
1932 IWL_DEBUG_INFO(priv, "ucode inst image size is %u\n", len);
1933
1934 for (i = 0; i < len; i += 100, image += 100/sizeof(u32)) {
1935 /* read data comes through single port, auto-incr addr */
1936 /* NOTE: Use the debugless read so we don't flood kernel log
1937 * if IWL_DL_IO is set */
1938 iwl_write_direct32(priv, HBUS_TARG_MEM_RADDR,
1939 i + IWL49_RTC_INST_LOWER_BOUND);
1940 val = _iwl_read_direct32(priv, HBUS_TARG_MEM_RDAT);
1941 if (val != le32_to_cpu(*image)) {
1942 ret = -EIO;
1943 errcnt++;
1944 if (errcnt >= 3)
1945 break;
1946 }
1947 }
1948
1949 return ret;
1950 }
1951
1952 /**
1953 * iwlcore_verify_inst_full - verify runtime uCode image in card vs. host,
1954 * looking at all data.
1955 */
1956 static int iwl_verify_inst_full(struct iwl_priv *priv, __le32 *image,
1957 u32 len)
1958 {
1959 u32 val;
1960 u32 save_len = len;
1961 int ret = 0;
1962 u32 errcnt;
1963
1964 IWL_DEBUG_INFO(priv, "ucode inst image size is %u\n", len);
1965
1966 iwl_write_direct32(priv, HBUS_TARG_MEM_RADDR,
1967 IWL49_RTC_INST_LOWER_BOUND);
1968
1969 errcnt = 0;
1970 for (; len > 0; len -= sizeof(u32), image++) {
1971 /* read data comes through single port, auto-incr addr */
1972 /* NOTE: Use the debugless read so we don't flood kernel log
1973 * if IWL_DL_IO is set */
1974 val = _iwl_read_direct32(priv, HBUS_TARG_MEM_RDAT);
1975 if (val != le32_to_cpu(*image)) {
1976 IWL_ERR(priv, "uCode INST section is invalid at "
1977 "offset 0x%x, is 0x%x, s/b 0x%x\n",
1978 save_len - len, val, le32_to_cpu(*image));
1979 ret = -EIO;
1980 errcnt++;
1981 if (errcnt >= 20)
1982 break;
1983 }
1984 }
1985
1986 if (!errcnt)
1987 IWL_DEBUG_INFO(priv,
1988 "ucode image in INSTRUCTION memory is good\n");
1989
1990 return ret;
1991 }
1992
1993 /**
1994 * iwl_verify_ucode - determine which instruction image is in SRAM,
1995 * and verify its contents
1996 */
1997 int iwl_verify_ucode(struct iwl_priv *priv)
1998 {
1999 __le32 *image;
2000 u32 len;
2001 int ret;
2002
2003 /* Try bootstrap */
2004 image = (__le32 *)priv->ucode_boot.v_addr;
2005 len = priv->ucode_boot.len;
2006 ret = iwlcore_verify_inst_sparse(priv, image, len);
2007 if (!ret) {
2008 IWL_DEBUG_INFO(priv, "Bootstrap uCode is good in inst SRAM\n");
2009 return 0;
2010 }
2011
2012 /* Try initialize */
2013 image = (__le32 *)priv->ucode_init.v_addr;
2014 len = priv->ucode_init.len;
2015 ret = iwlcore_verify_inst_sparse(priv, image, len);
2016 if (!ret) {
2017 IWL_DEBUG_INFO(priv, "Initialize uCode is good in inst SRAM\n");
2018 return 0;
2019 }
2020
2021 /* Try runtime/protocol */
2022 image = (__le32 *)priv->ucode_code.v_addr;
2023 len = priv->ucode_code.len;
2024 ret = iwlcore_verify_inst_sparse(priv, image, len);
2025 if (!ret) {
2026 IWL_DEBUG_INFO(priv, "Runtime uCode is good in inst SRAM\n");
2027 return 0;
2028 }
2029
2030 IWL_ERR(priv, "NO VALID UCODE IMAGE IN INSTRUCTION SRAM!!\n");
2031
2032 /* Since nothing seems to match, show first several data entries in
2033 * instruction SRAM, so maybe visual inspection will give a clue.
2034 * Selection of bootstrap image (vs. other images) is arbitrary. */
2035 image = (__le32 *)priv->ucode_boot.v_addr;
2036 len = priv->ucode_boot.len;
2037 ret = iwl_verify_inst_full(priv, image, len);
2038
2039 return ret;
2040 }
2041 EXPORT_SYMBOL(iwl_verify_ucode);
2042
2043
2044 void iwl_rf_kill_ct_config(struct iwl_priv *priv)
2045 {
2046 struct iwl_ct_kill_config cmd;
2047 struct iwl_ct_kill_throttling_config adv_cmd;
2048 unsigned long flags;
2049 int ret = 0;
2050
2051 spin_lock_irqsave(&priv->lock, flags);
2052 iwl_write32(priv, CSR_UCODE_DRV_GP1_CLR,
2053 CSR_UCODE_DRV_GP1_REG_BIT_CT_KILL_EXIT);
2054 spin_unlock_irqrestore(&priv->lock, flags);
2055 priv->thermal_throttle.ct_kill_toggle = false;
2056
2057 switch (priv->hw_rev & CSR_HW_REV_TYPE_MSK) {
2058 case CSR_HW_REV_TYPE_1000:
2059 case CSR_HW_REV_TYPE_6x00:
2060 case CSR_HW_REV_TYPE_6x50:
2061 adv_cmd.critical_temperature_enter =
2062 cpu_to_le32(priv->hw_params.ct_kill_threshold);
2063 adv_cmd.critical_temperature_exit =
2064 cpu_to_le32(priv->hw_params.ct_kill_exit_threshold);
2065
2066 ret = iwl_send_cmd_pdu(priv, REPLY_CT_KILL_CONFIG_CMD,
2067 sizeof(adv_cmd), &adv_cmd);
2068 if (ret)
2069 IWL_ERR(priv, "REPLY_CT_KILL_CONFIG_CMD failed\n");
2070 else
2071 IWL_DEBUG_INFO(priv, "REPLY_CT_KILL_CONFIG_CMD "
2072 "succeeded, "
2073 "critical temperature enter is %d,"
2074 "exit is %d\n",
2075 priv->hw_params.ct_kill_threshold,
2076 priv->hw_params.ct_kill_exit_threshold);
2077 break;
2078 default:
2079 cmd.critical_temperature_R =
2080 cpu_to_le32(priv->hw_params.ct_kill_threshold);
2081
2082 ret = iwl_send_cmd_pdu(priv, REPLY_CT_KILL_CONFIG_CMD,
2083 sizeof(cmd), &cmd);
2084 if (ret)
2085 IWL_ERR(priv, "REPLY_CT_KILL_CONFIG_CMD failed\n");
2086 else
2087 IWL_DEBUG_INFO(priv, "REPLY_CT_KILL_CONFIG_CMD "
2088 "succeeded, "
2089 "critical temperature is %d\n",
2090 priv->hw_params.ct_kill_threshold);
2091 break;
2092 }
2093 }
2094 EXPORT_SYMBOL(iwl_rf_kill_ct_config);
2095
2096
2097 /*
2098 * CARD_STATE_CMD
2099 *
2100 * Use: Sets the device's internal card state to enable, disable, or halt
2101 *
2102 * When in the 'enable' state the card operates as normal.
2103 * When in the 'disable' state, the card enters into a low power mode.
2104 * When in the 'halt' state, the card is shut down and must be fully
2105 * restarted to come back on.
2106 */
2107 int iwl_send_card_state(struct iwl_priv *priv, u32 flags, u8 meta_flag)
2108 {
2109 struct iwl_host_cmd cmd = {
2110 .id = REPLY_CARD_STATE_CMD,
2111 .len = sizeof(u32),
2112 .data = &flags,
2113 .flags = meta_flag,
2114 };
2115
2116 return iwl_send_cmd(priv, &cmd);
2117 }
2118
2119 void iwl_rx_pm_sleep_notif(struct iwl_priv *priv,
2120 struct iwl_rx_mem_buffer *rxb)
2121 {
2122 #ifdef CONFIG_IWLWIFI_DEBUG
2123 struct iwl_rx_packet *pkt = (struct iwl_rx_packet *)rxb->skb->data;
2124 struct iwl_sleep_notification *sleep = &(pkt->u.sleep_notif);
2125 IWL_DEBUG_RX(priv, "sleep mode: %d, src: %d\n",
2126 sleep->pm_sleep_mode, sleep->pm_wakeup_src);
2127 #endif
2128 }
2129 EXPORT_SYMBOL(iwl_rx_pm_sleep_notif);
2130
2131 void iwl_rx_pm_debug_statistics_notif(struct iwl_priv *priv,
2132 struct iwl_rx_mem_buffer *rxb)
2133 {
2134 struct iwl_rx_packet *pkt = (struct iwl_rx_packet *)rxb->skb->data;
2135 u32 len = le32_to_cpu(pkt->len_n_flags) & FH_RSCSR_FRAME_SIZE_MSK;
2136 IWL_DEBUG_RADIO(priv, "Dumping %d bytes of unhandled "
2137 "notification for %s:\n", len,
2138 get_cmd_string(pkt->hdr.cmd));
2139 iwl_print_hex_dump(priv, IWL_DL_RADIO, pkt->u.raw, len);
2140 }
2141 EXPORT_SYMBOL(iwl_rx_pm_debug_statistics_notif);
2142
2143 void iwl_rx_reply_error(struct iwl_priv *priv,
2144 struct iwl_rx_mem_buffer *rxb)
2145 {
2146 struct iwl_rx_packet *pkt = (struct iwl_rx_packet *)rxb->skb->data;
2147
2148 IWL_ERR(priv, "Error Reply type 0x%08X cmd %s (0x%02X) "
2149 "seq 0x%04X ser 0x%08X\n",
2150 le32_to_cpu(pkt->u.err_resp.error_type),
2151 get_cmd_string(pkt->u.err_resp.cmd_id),
2152 pkt->u.err_resp.cmd_id,
2153 le16_to_cpu(pkt->u.err_resp.bad_cmd_seq_num),
2154 le32_to_cpu(pkt->u.err_resp.error_info));
2155 }
2156 EXPORT_SYMBOL(iwl_rx_reply_error);
2157
2158 void iwl_clear_isr_stats(struct iwl_priv *priv)
2159 {
2160 memset(&priv->isr_stats, 0, sizeof(priv->isr_stats));
2161 }
2162
2163 int iwl_mac_conf_tx(struct ieee80211_hw *hw, u16 queue,
2164 const struct ieee80211_tx_queue_params *params)
2165 {
2166 struct iwl_priv *priv = hw->priv;
2167 unsigned long flags;
2168 int q;
2169
2170 IWL_DEBUG_MAC80211(priv, "enter\n");
2171
2172 if (!iwl_is_ready_rf(priv)) {
2173 IWL_DEBUG_MAC80211(priv, "leave - RF not ready\n");
2174 return -EIO;
2175 }
2176
2177 if (queue >= AC_NUM) {
2178 IWL_DEBUG_MAC80211(priv, "leave - queue >= AC_NUM %d\n", queue);
2179 return 0;
2180 }
2181
2182 q = AC_NUM - 1 - queue;
2183
2184 spin_lock_irqsave(&priv->lock, flags);
2185
2186 priv->qos_data.def_qos_parm.ac[q].cw_min = cpu_to_le16(params->cw_min);
2187 priv->qos_data.def_qos_parm.ac[q].cw_max = cpu_to_le16(params->cw_max);
2188 priv->qos_data.def_qos_parm.ac[q].aifsn = params->aifs;
2189 priv->qos_data.def_qos_parm.ac[q].edca_txop =
2190 cpu_to_le16((params->txop * 32));
2191
2192 priv->qos_data.def_qos_parm.ac[q].reserved1 = 0;
2193 priv->qos_data.qos_active = 1;
2194
2195 if (priv->iw_mode == NL80211_IFTYPE_AP)
2196 iwl_activate_qos(priv, 1);
2197 else if (priv->assoc_id && iwl_is_associated(priv))
2198 iwl_activate_qos(priv, 0);
2199
2200 spin_unlock_irqrestore(&priv->lock, flags);
2201
2202 IWL_DEBUG_MAC80211(priv, "leave\n");
2203 return 0;
2204 }
2205 EXPORT_SYMBOL(iwl_mac_conf_tx);
2206
2207 static void iwl_ht_conf(struct iwl_priv *priv,
2208 struct ieee80211_bss_conf *bss_conf)
2209 {
2210 struct iwl_ht_config *ht_conf = &priv->current_ht_config;
2211 struct ieee80211_sta *sta;
2212
2213 IWL_DEBUG_MAC80211(priv, "enter: \n");
2214
2215 if (!ht_conf->is_ht)
2216 return;
2217
2218 ht_conf->ht_protection =
2219 bss_conf->ht_operation_mode & IEEE80211_HT_OP_MODE_PROTECTION;
2220 ht_conf->non_GF_STA_present =
2221 !!(bss_conf->ht_operation_mode & IEEE80211_HT_OP_MODE_NON_GF_STA_PRSNT);
2222
2223 ht_conf->single_chain_sufficient = false;
2224
2225 switch (priv->iw_mode) {
2226 case NL80211_IFTYPE_STATION:
2227 rcu_read_lock();
2228 sta = ieee80211_find_sta(priv->hw, priv->bssid);
2229 if (sta) {
2230 struct ieee80211_sta_ht_cap *ht_cap = &sta->ht_cap;
2231 int maxstreams;
2232
2233 maxstreams = (ht_cap->mcs.tx_params &
2234 IEEE80211_HT_MCS_TX_MAX_STREAMS_MASK)
2235 >> IEEE80211_HT_MCS_TX_MAX_STREAMS_SHIFT;
2236 maxstreams += 1;
2237
2238 if ((ht_cap->mcs.rx_mask[1] == 0) &&
2239 (ht_cap->mcs.rx_mask[2] == 0))
2240 ht_conf->single_chain_sufficient = true;
2241 if (maxstreams <= 1)
2242 ht_conf->single_chain_sufficient = true;
2243 } else {
2244 /*
2245 * If at all, this can only happen through a race
2246 * when the AP disconnects us while we're still
2247 * setting up the connection, in that case mac80211
2248 * will soon tell us about that.
2249 */
2250 ht_conf->single_chain_sufficient = true;
2251 }
2252 rcu_read_unlock();
2253 break;
2254 case NL80211_IFTYPE_ADHOC:
2255 ht_conf->single_chain_sufficient = true;
2256 break;
2257 default:
2258 break;
2259 }
2260
2261 IWL_DEBUG_MAC80211(priv, "leave\n");
2262 }
2263
2264 #define IWL_DELAY_NEXT_SCAN_AFTER_ASSOC (HZ*6)
2265 void iwl_bss_info_changed(struct ieee80211_hw *hw,
2266 struct ieee80211_vif *vif,
2267 struct ieee80211_bss_conf *bss_conf,
2268 u32 changes)
2269 {
2270 struct iwl_priv *priv = hw->priv;
2271 int ret;
2272
2273 IWL_DEBUG_MAC80211(priv, "changes = 0x%X\n", changes);
2274
2275 if (!iwl_is_alive(priv))
2276 return;
2277
2278 mutex_lock(&priv->mutex);
2279
2280 if (changes & BSS_CHANGED_BEACON &&
2281 priv->iw_mode == NL80211_IFTYPE_AP) {
2282 dev_kfree_skb(priv->ibss_beacon);
2283 priv->ibss_beacon = ieee80211_beacon_get(hw, vif);
2284 }
2285
2286 if (changes & BSS_CHANGED_BEACON_INT) {
2287 priv->beacon_int = bss_conf->beacon_int;
2288 /* TODO: in AP mode, do something to make this take effect */
2289 }
2290
2291 if (changes & BSS_CHANGED_BSSID) {
2292 IWL_DEBUG_MAC80211(priv, "BSSID %pM\n", bss_conf->bssid);
2293
2294 /*
2295 * If there is currently a HW scan going on in the
2296 * background then we need to cancel it else the RXON
2297 * below/in post_associate will fail.
2298 */
2299 if (iwl_scan_cancel_timeout(priv, 100)) {
2300 IWL_WARN(priv, "Aborted scan still in progress after 100ms\n");
2301 IWL_DEBUG_MAC80211(priv, "leaving - scan abort failed.\n");
2302 mutex_unlock(&priv->mutex);
2303 return;
2304 }
2305
2306 /* mac80211 only sets assoc when in STATION mode */
2307 if (priv->iw_mode == NL80211_IFTYPE_ADHOC ||
2308 bss_conf->assoc) {
2309 memcpy(priv->staging_rxon.bssid_addr,
2310 bss_conf->bssid, ETH_ALEN);
2311
2312 /* currently needed in a few places */
2313 memcpy(priv->bssid, bss_conf->bssid, ETH_ALEN);
2314 } else {
2315 priv->staging_rxon.filter_flags &=
2316 ~RXON_FILTER_ASSOC_MSK;
2317 }
2318
2319 }
2320
2321 /*
2322 * This needs to be after setting the BSSID in case
2323 * mac80211 decides to do both changes at once because
2324 * it will invoke post_associate.
2325 */
2326 if (priv->iw_mode == NL80211_IFTYPE_ADHOC &&
2327 changes & BSS_CHANGED_BEACON) {
2328 struct sk_buff *beacon = ieee80211_beacon_get(hw, vif);
2329
2330 if (beacon)
2331 iwl_mac_beacon_update(hw, beacon);
2332 }
2333
2334 if (changes & BSS_CHANGED_ERP_PREAMBLE) {
2335 IWL_DEBUG_MAC80211(priv, "ERP_PREAMBLE %d\n",
2336 bss_conf->use_short_preamble);
2337 if (bss_conf->use_short_preamble)
2338 priv->staging_rxon.flags |= RXON_FLG_SHORT_PREAMBLE_MSK;
2339 else
2340 priv->staging_rxon.flags &= ~RXON_FLG_SHORT_PREAMBLE_MSK;
2341 }
2342
2343 if (changes & BSS_CHANGED_ERP_CTS_PROT) {
2344 IWL_DEBUG_MAC80211(priv, "ERP_CTS %d\n", bss_conf->use_cts_prot);
2345 if (bss_conf->use_cts_prot && (priv->band != IEEE80211_BAND_5GHZ))
2346 priv->staging_rxon.flags |= RXON_FLG_TGG_PROTECT_MSK;
2347 else
2348 priv->staging_rxon.flags &= ~RXON_FLG_TGG_PROTECT_MSK;
2349 }
2350
2351 if (changes & BSS_CHANGED_BASIC_RATES) {
2352 /* XXX use this information
2353 *
2354 * To do that, remove code from iwl_set_rate() and put something
2355 * like this here:
2356 *
2357 if (A-band)
2358 priv->staging_rxon.ofdm_basic_rates =
2359 bss_conf->basic_rates;
2360 else
2361 priv->staging_rxon.ofdm_basic_rates =
2362 bss_conf->basic_rates >> 4;
2363 priv->staging_rxon.cck_basic_rates =
2364 bss_conf->basic_rates & 0xF;
2365 */
2366 }
2367
2368 if (changes & BSS_CHANGED_HT) {
2369 iwl_ht_conf(priv, bss_conf);
2370
2371 if (priv->cfg->ops->hcmd->set_rxon_chain)
2372 priv->cfg->ops->hcmd->set_rxon_chain(priv);
2373 }
2374
2375 if (changes & BSS_CHANGED_ASSOC) {
2376 IWL_DEBUG_MAC80211(priv, "ASSOC %d\n", bss_conf->assoc);
2377 if (bss_conf->assoc) {
2378 priv->assoc_id = bss_conf->aid;
2379 priv->beacon_int = bss_conf->beacon_int;
2380 priv->timestamp = bss_conf->timestamp;
2381 priv->assoc_capability = bss_conf->assoc_capability;
2382
2383 /*
2384 * We have just associated, don't start scan too early
2385 * leave time for EAPOL exchange to complete.
2386 *
2387 * XXX: do this in mac80211
2388 */
2389 priv->next_scan_jiffies = jiffies +
2390 IWL_DELAY_NEXT_SCAN_AFTER_ASSOC;
2391 if (!iwl_is_rfkill(priv))
2392 priv->cfg->ops->lib->post_associate(priv);
2393 } else
2394 priv->assoc_id = 0;
2395
2396 }
2397
2398 if (changes && iwl_is_associated(priv) && priv->assoc_id) {
2399 IWL_DEBUG_MAC80211(priv, "Changes (%#x) while associated\n",
2400 changes);
2401 ret = iwl_send_rxon_assoc(priv);
2402 if (!ret) {
2403 /* Sync active_rxon with latest change. */
2404 memcpy((void *)&priv->active_rxon,
2405 &priv->staging_rxon,
2406 sizeof(struct iwl_rxon_cmd));
2407 }
2408 }
2409
2410 mutex_unlock(&priv->mutex);
2411
2412 IWL_DEBUG_MAC80211(priv, "leave\n");
2413 }
2414 EXPORT_SYMBOL(iwl_bss_info_changed);
2415
2416 int iwl_mac_beacon_update(struct ieee80211_hw *hw, struct sk_buff *skb)
2417 {
2418 struct iwl_priv *priv = hw->priv;
2419 unsigned long flags;
2420 __le64 timestamp;
2421
2422 IWL_DEBUG_MAC80211(priv, "enter\n");
2423
2424 if (!iwl_is_ready_rf(priv)) {
2425 IWL_DEBUG_MAC80211(priv, "leave - RF not ready\n");
2426 return -EIO;
2427 }
2428
2429 if (priv->iw_mode != NL80211_IFTYPE_ADHOC) {
2430 IWL_DEBUG_MAC80211(priv, "leave - not IBSS\n");
2431 return -EIO;
2432 }
2433
2434 spin_lock_irqsave(&priv->lock, flags);
2435
2436 if (priv->ibss_beacon)
2437 dev_kfree_skb(priv->ibss_beacon);
2438
2439 priv->ibss_beacon = skb;
2440
2441 priv->assoc_id = 0;
2442 timestamp = ((struct ieee80211_mgmt *)skb->data)->u.beacon.timestamp;
2443 priv->timestamp = le64_to_cpu(timestamp);
2444
2445 IWL_DEBUG_MAC80211(priv, "leave\n");
2446 spin_unlock_irqrestore(&priv->lock, flags);
2447
2448 iwl_reset_qos(priv);
2449
2450 priv->cfg->ops->lib->post_associate(priv);
2451
2452
2453 return 0;
2454 }
2455 EXPORT_SYMBOL(iwl_mac_beacon_update);
2456
2457 int iwl_set_mode(struct iwl_priv *priv, int mode)
2458 {
2459 if (mode == NL80211_IFTYPE_ADHOC) {
2460 const struct iwl_channel_info *ch_info;
2461
2462 ch_info = iwl_get_channel_info(priv,
2463 priv->band,
2464 le16_to_cpu(priv->staging_rxon.channel));
2465
2466 if (!ch_info || !is_channel_ibss(ch_info)) {
2467 IWL_ERR(priv, "channel %d not IBSS channel\n",
2468 le16_to_cpu(priv->staging_rxon.channel));
2469 return -EINVAL;
2470 }
2471 }
2472
2473 iwl_connection_init_rx_config(priv, mode);
2474
2475 if (priv->cfg->ops->hcmd->set_rxon_chain)
2476 priv->cfg->ops->hcmd->set_rxon_chain(priv);
2477
2478 memcpy(priv->staging_rxon.node_addr, priv->mac_addr, ETH_ALEN);
2479
2480 iwl_clear_stations_table(priv);
2481
2482 /* dont commit rxon if rf-kill is on*/
2483 if (!iwl_is_ready_rf(priv))
2484 return -EAGAIN;
2485
2486 iwlcore_commit_rxon(priv);
2487
2488 return 0;
2489 }
2490 EXPORT_SYMBOL(iwl_set_mode);
2491
2492 int iwl_mac_add_interface(struct ieee80211_hw *hw,
2493 struct ieee80211_if_init_conf *conf)
2494 {
2495 struct iwl_priv *priv = hw->priv;
2496 unsigned long flags;
2497
2498 IWL_DEBUG_MAC80211(priv, "enter: type %d\n", conf->type);
2499
2500 if (priv->vif) {
2501 IWL_DEBUG_MAC80211(priv, "leave - vif != NULL\n");
2502 return -EOPNOTSUPP;
2503 }
2504
2505 spin_lock_irqsave(&priv->lock, flags);
2506 priv->vif = conf->vif;
2507 priv->iw_mode = conf->type;
2508
2509 spin_unlock_irqrestore(&priv->lock, flags);
2510
2511 mutex_lock(&priv->mutex);
2512
2513 if (conf->mac_addr) {
2514 IWL_DEBUG_MAC80211(priv, "Set %pM\n", conf->mac_addr);
2515 memcpy(priv->mac_addr, conf->mac_addr, ETH_ALEN);
2516 }
2517
2518 if (iwl_set_mode(priv, conf->type) == -EAGAIN)
2519 /* we are not ready, will run again when ready */
2520 set_bit(STATUS_MODE_PENDING, &priv->status);
2521
2522 mutex_unlock(&priv->mutex);
2523
2524 IWL_DEBUG_MAC80211(priv, "leave\n");
2525 return 0;
2526 }
2527 EXPORT_SYMBOL(iwl_mac_add_interface);
2528
2529 void iwl_mac_remove_interface(struct ieee80211_hw *hw,
2530 struct ieee80211_if_init_conf *conf)
2531 {
2532 struct iwl_priv *priv = hw->priv;
2533
2534 IWL_DEBUG_MAC80211(priv, "enter\n");
2535
2536 mutex_lock(&priv->mutex);
2537
2538 if (iwl_is_ready_rf(priv)) {
2539 iwl_scan_cancel_timeout(priv, 100);
2540 priv->staging_rxon.filter_flags &= ~RXON_FILTER_ASSOC_MSK;
2541 iwlcore_commit_rxon(priv);
2542 }
2543 if (priv->vif == conf->vif) {
2544 priv->vif = NULL;
2545 memset(priv->bssid, 0, ETH_ALEN);
2546 }
2547 mutex_unlock(&priv->mutex);
2548
2549 IWL_DEBUG_MAC80211(priv, "leave\n");
2550
2551 }
2552 EXPORT_SYMBOL(iwl_mac_remove_interface);
2553
2554 /**
2555 * iwl_mac_config - mac80211 config callback
2556 *
2557 * We ignore conf->flags & IEEE80211_CONF_SHORT_SLOT_TIME since it seems to
2558 * be set inappropriately and the driver currently sets the hardware up to
2559 * use it whenever needed.
2560 */
2561 int iwl_mac_config(struct ieee80211_hw *hw, u32 changed)
2562 {
2563 struct iwl_priv *priv = hw->priv;
2564 const struct iwl_channel_info *ch_info;
2565 struct ieee80211_conf *conf = &hw->conf;
2566 struct iwl_ht_config *ht_conf = &priv->current_ht_config;
2567 unsigned long flags = 0;
2568 int ret = 0;
2569 u16 ch;
2570 int scan_active = 0;
2571
2572 mutex_lock(&priv->mutex);
2573
2574 IWL_DEBUG_MAC80211(priv, "enter to channel %d changed 0x%X\n",
2575 conf->channel->hw_value, changed);
2576
2577 if (unlikely(!priv->cfg->mod_params->disable_hw_scan &&
2578 test_bit(STATUS_SCANNING, &priv->status))) {
2579 scan_active = 1;
2580 IWL_DEBUG_MAC80211(priv, "leave - scanning\n");
2581 }
2582
2583
2584 /* during scanning mac80211 will delay channel setting until
2585 * scan finish with changed = 0
2586 */
2587 if (!changed || (changed & IEEE80211_CONF_CHANGE_CHANNEL)) {
2588 if (scan_active)
2589 goto set_ch_out;
2590
2591 ch = ieee80211_frequency_to_channel(conf->channel->center_freq);
2592 ch_info = iwl_get_channel_info(priv, conf->channel->band, ch);
2593 if (!is_channel_valid(ch_info)) {
2594 IWL_DEBUG_MAC80211(priv, "leave - invalid channel\n");
2595 ret = -EINVAL;
2596 goto set_ch_out;
2597 }
2598
2599 if (priv->iw_mode == NL80211_IFTYPE_ADHOC &&
2600 !is_channel_ibss(ch_info)) {
2601 IWL_ERR(priv, "channel %d in band %d not "
2602 "IBSS channel\n",
2603 conf->channel->hw_value, conf->channel->band);
2604 ret = -EINVAL;
2605 goto set_ch_out;
2606 }
2607
2608 spin_lock_irqsave(&priv->lock, flags);
2609
2610 /* Configure HT40 channels */
2611 ht_conf->is_ht = conf_is_ht(conf);
2612 if (ht_conf->is_ht) {
2613 if (conf_is_ht40_minus(conf)) {
2614 ht_conf->extension_chan_offset =
2615 IEEE80211_HT_PARAM_CHA_SEC_BELOW;
2616 ht_conf->is_40mhz = true;
2617 } else if (conf_is_ht40_plus(conf)) {
2618 ht_conf->extension_chan_offset =
2619 IEEE80211_HT_PARAM_CHA_SEC_ABOVE;
2620 ht_conf->is_40mhz = true;
2621 } else {
2622 ht_conf->extension_chan_offset =
2623 IEEE80211_HT_PARAM_CHA_SEC_NONE;
2624 ht_conf->is_40mhz = false;
2625 }
2626 } else
2627 ht_conf->is_40mhz = false;
2628 /* Default to no protection. Protection mode will later be set
2629 * from BSS config in iwl_ht_conf */
2630 ht_conf->ht_protection = IEEE80211_HT_OP_MODE_PROTECTION_NONE;
2631
2632 /* if we are switching from ht to 2.4 clear flags
2633 * from any ht related info since 2.4 does not
2634 * support ht */
2635 if ((le16_to_cpu(priv->staging_rxon.channel) != ch))
2636 priv->staging_rxon.flags = 0;
2637
2638 iwl_set_rxon_channel(priv, conf->channel);
2639
2640 iwl_set_flags_for_band(priv, conf->channel->band);
2641 spin_unlock_irqrestore(&priv->lock, flags);
2642 set_ch_out:
2643 /* The list of supported rates and rate mask can be different
2644 * for each band; since the band may have changed, reset
2645 * the rate mask to what mac80211 lists */
2646 iwl_set_rate(priv);
2647 }
2648
2649 if (changed & IEEE80211_CONF_CHANGE_PS) {
2650 ret = iwl_power_update_mode(priv, false);
2651 if (ret)
2652 IWL_DEBUG_MAC80211(priv, "Error setting sleep level\n");
2653 }
2654
2655 if (changed & IEEE80211_CONF_CHANGE_POWER) {
2656 IWL_DEBUG_MAC80211(priv, "TX Power old=%d new=%d\n",
2657 priv->tx_power_user_lmt, conf->power_level);
2658
2659 iwl_set_tx_power(priv, conf->power_level, false);
2660 }
2661
2662 /* call to ensure that 4965 rx_chain is set properly in monitor mode */
2663 if (priv->cfg->ops->hcmd->set_rxon_chain)
2664 priv->cfg->ops->hcmd->set_rxon_chain(priv);
2665
2666 if (!iwl_is_ready(priv)) {
2667 IWL_DEBUG_MAC80211(priv, "leave - not ready\n");
2668 goto out;
2669 }
2670
2671 if (scan_active)
2672 goto out;
2673
2674 if (memcmp(&priv->active_rxon,
2675 &priv->staging_rxon, sizeof(priv->staging_rxon)))
2676 iwlcore_commit_rxon(priv);
2677 else
2678 IWL_DEBUG_INFO(priv, "Not re-sending same RXON configuration.\n");
2679
2680
2681 out:
2682 IWL_DEBUG_MAC80211(priv, "leave\n");
2683 mutex_unlock(&priv->mutex);
2684 return ret;
2685 }
2686 EXPORT_SYMBOL(iwl_mac_config);
2687
2688 int iwl_mac_get_tx_stats(struct ieee80211_hw *hw,
2689 struct ieee80211_tx_queue_stats *stats)
2690 {
2691 struct iwl_priv *priv = hw->priv;
2692 int i, avail;
2693 struct iwl_tx_queue *txq;
2694 struct iwl_queue *q;
2695 unsigned long flags;
2696
2697 IWL_DEBUG_MAC80211(priv, "enter\n");
2698
2699 if (!iwl_is_ready_rf(priv)) {
2700 IWL_DEBUG_MAC80211(priv, "leave - RF not ready\n");
2701 return -EIO;
2702 }
2703
2704 spin_lock_irqsave(&priv->lock, flags);
2705
2706 for (i = 0; i < AC_NUM; i++) {
2707 txq = &priv->txq[i];
2708 q = &txq->q;
2709 avail = iwl_queue_space(q);
2710
2711 stats[i].len = q->n_window - avail;
2712 stats[i].limit = q->n_window - q->high_mark;
2713 stats[i].count = q->n_window;
2714
2715 }
2716 spin_unlock_irqrestore(&priv->lock, flags);
2717
2718 IWL_DEBUG_MAC80211(priv, "leave\n");
2719
2720 return 0;
2721 }
2722 EXPORT_SYMBOL(iwl_mac_get_tx_stats);
2723
2724 void iwl_mac_reset_tsf(struct ieee80211_hw *hw)
2725 {
2726 struct iwl_priv *priv = hw->priv;
2727 unsigned long flags;
2728
2729 mutex_lock(&priv->mutex);
2730 IWL_DEBUG_MAC80211(priv, "enter\n");
2731
2732 spin_lock_irqsave(&priv->lock, flags);
2733 memset(&priv->current_ht_config, 0, sizeof(struct iwl_ht_config));
2734 spin_unlock_irqrestore(&priv->lock, flags);
2735
2736 iwl_reset_qos(priv);
2737
2738 spin_lock_irqsave(&priv->lock, flags);
2739 priv->assoc_id = 0;
2740 priv->assoc_capability = 0;
2741 priv->assoc_station_added = 0;
2742
2743 /* new association get rid of ibss beacon skb */
2744 if (priv->ibss_beacon)
2745 dev_kfree_skb(priv->ibss_beacon);
2746
2747 priv->ibss_beacon = NULL;
2748
2749 priv->beacon_int = priv->vif->bss_conf.beacon_int;
2750 priv->timestamp = 0;
2751 if ((priv->iw_mode == NL80211_IFTYPE_STATION))
2752 priv->beacon_int = 0;
2753
2754 spin_unlock_irqrestore(&priv->lock, flags);
2755
2756 if (!iwl_is_ready_rf(priv)) {
2757 IWL_DEBUG_MAC80211(priv, "leave - not ready\n");
2758 mutex_unlock(&priv->mutex);
2759 return;
2760 }
2761
2762 /* we are restarting association process
2763 * clear RXON_FILTER_ASSOC_MSK bit
2764 */
2765 if (priv->iw_mode != NL80211_IFTYPE_AP) {
2766 iwl_scan_cancel_timeout(priv, 100);
2767 priv->staging_rxon.filter_flags &= ~RXON_FILTER_ASSOC_MSK;
2768 iwlcore_commit_rxon(priv);
2769 }
2770
2771 if (priv->iw_mode != NL80211_IFTYPE_ADHOC) {
2772 IWL_DEBUG_MAC80211(priv, "leave - not in IBSS\n");
2773 mutex_unlock(&priv->mutex);
2774 return;
2775 }
2776
2777 iwl_set_rate(priv);
2778
2779 mutex_unlock(&priv->mutex);
2780
2781 IWL_DEBUG_MAC80211(priv, "leave\n");
2782 }
2783 EXPORT_SYMBOL(iwl_mac_reset_tsf);
2784
2785 #ifdef CONFIG_IWLWIFI_DEBUGFS
2786
2787 #define IWL_TRAFFIC_DUMP_SIZE (IWL_TRAFFIC_ENTRY_SIZE * IWL_TRAFFIC_ENTRIES)
2788
2789 void iwl_reset_traffic_log(struct iwl_priv *priv)
2790 {
2791 priv->tx_traffic_idx = 0;
2792 priv->rx_traffic_idx = 0;
2793 if (priv->tx_traffic)
2794 memset(priv->tx_traffic, 0, IWL_TRAFFIC_DUMP_SIZE);
2795 if (priv->rx_traffic)
2796 memset(priv->rx_traffic, 0, IWL_TRAFFIC_DUMP_SIZE);
2797 }
2798
2799 int iwl_alloc_traffic_mem(struct iwl_priv *priv)
2800 {
2801 u32 traffic_size = IWL_TRAFFIC_DUMP_SIZE;
2802
2803 if (iwl_debug_level & IWL_DL_TX) {
2804 if (!priv->tx_traffic) {
2805 priv->tx_traffic =
2806 kzalloc(traffic_size, GFP_KERNEL);
2807 if (!priv->tx_traffic)
2808 return -ENOMEM;
2809 }
2810 }
2811 if (iwl_debug_level & IWL_DL_RX) {
2812 if (!priv->rx_traffic) {
2813 priv->rx_traffic =
2814 kzalloc(traffic_size, GFP_KERNEL);
2815 if (!priv->rx_traffic)
2816 return -ENOMEM;
2817 }
2818 }
2819 iwl_reset_traffic_log(priv);
2820 return 0;
2821 }
2822 EXPORT_SYMBOL(iwl_alloc_traffic_mem);
2823
2824 void iwl_free_traffic_mem(struct iwl_priv *priv)
2825 {
2826 kfree(priv->tx_traffic);
2827 priv->tx_traffic = NULL;
2828
2829 kfree(priv->rx_traffic);
2830 priv->rx_traffic = NULL;
2831 }
2832 EXPORT_SYMBOL(iwl_free_traffic_mem);
2833
2834 void iwl_dbg_log_tx_data_frame(struct iwl_priv *priv,
2835 u16 length, struct ieee80211_hdr *header)
2836 {
2837 __le16 fc;
2838 u16 len;
2839
2840 if (likely(!(iwl_debug_level & IWL_DL_TX)))
2841 return;
2842
2843 if (!priv->tx_traffic)
2844 return;
2845
2846 fc = header->frame_control;
2847 if (ieee80211_is_data(fc)) {
2848 len = (length > IWL_TRAFFIC_ENTRY_SIZE)
2849 ? IWL_TRAFFIC_ENTRY_SIZE : length;
2850 memcpy((priv->tx_traffic +
2851 (priv->tx_traffic_idx * IWL_TRAFFIC_ENTRY_SIZE)),
2852 header, len);
2853 priv->tx_traffic_idx =
2854 (priv->tx_traffic_idx + 1) % IWL_TRAFFIC_ENTRIES;
2855 }
2856 }
2857 EXPORT_SYMBOL(iwl_dbg_log_tx_data_frame);
2858
2859 void iwl_dbg_log_rx_data_frame(struct iwl_priv *priv,
2860 u16 length, struct ieee80211_hdr *header)
2861 {
2862 __le16 fc;
2863 u16 len;
2864
2865 if (likely(!(iwl_debug_level & IWL_DL_RX)))
2866 return;
2867
2868 if (!priv->rx_traffic)
2869 return;
2870
2871 fc = header->frame_control;
2872 if (ieee80211_is_data(fc)) {
2873 len = (length > IWL_TRAFFIC_ENTRY_SIZE)
2874 ? IWL_TRAFFIC_ENTRY_SIZE : length;
2875 memcpy((priv->rx_traffic +
2876 (priv->rx_traffic_idx * IWL_TRAFFIC_ENTRY_SIZE)),
2877 header, len);
2878 priv->rx_traffic_idx =
2879 (priv->rx_traffic_idx + 1) % IWL_TRAFFIC_ENTRIES;
2880 }
2881 }
2882 EXPORT_SYMBOL(iwl_dbg_log_rx_data_frame);
2883
2884 const char *get_mgmt_string(int cmd)
2885 {
2886 switch (cmd) {
2887 IWL_CMD(MANAGEMENT_ASSOC_REQ);
2888 IWL_CMD(MANAGEMENT_ASSOC_RESP);
2889 IWL_CMD(MANAGEMENT_REASSOC_REQ);
2890 IWL_CMD(MANAGEMENT_REASSOC_RESP);
2891 IWL_CMD(MANAGEMENT_PROBE_REQ);
2892 IWL_CMD(MANAGEMENT_PROBE_RESP);
2893 IWL_CMD(MANAGEMENT_BEACON);
2894 IWL_CMD(MANAGEMENT_ATIM);
2895 IWL_CMD(MANAGEMENT_DISASSOC);
2896 IWL_CMD(MANAGEMENT_AUTH);
2897 IWL_CMD(MANAGEMENT_DEAUTH);
2898 IWL_CMD(MANAGEMENT_ACTION);
2899 default:
2900 return "UNKNOWN";
2901
2902 }
2903 }
2904
2905 const char *get_ctrl_string(int cmd)
2906 {
2907 switch (cmd) {
2908 IWL_CMD(CONTROL_BACK_REQ);
2909 IWL_CMD(CONTROL_BACK);
2910 IWL_CMD(CONTROL_PSPOLL);
2911 IWL_CMD(CONTROL_RTS);
2912 IWL_CMD(CONTROL_CTS);
2913 IWL_CMD(CONTROL_ACK);
2914 IWL_CMD(CONTROL_CFEND);
2915 IWL_CMD(CONTROL_CFENDACK);
2916 default:
2917 return "UNKNOWN";
2918
2919 }
2920 }
2921
2922 void iwl_clear_tx_stats(struct iwl_priv *priv)
2923 {
2924 memset(&priv->tx_stats, 0, sizeof(struct traffic_stats));
2925
2926 }
2927
2928 void iwl_clear_rx_stats(struct iwl_priv *priv)
2929 {
2930 memset(&priv->rx_stats, 0, sizeof(struct traffic_stats));
2931 }
2932
2933 /*
2934 * if CONFIG_IWLWIFI_DEBUGFS defined, iwl_update_stats function will
2935 * record all the MGMT, CTRL and DATA pkt for both TX and Rx pass.
2936 * Use debugFs to display the rx/rx_statistics
2937 * if CONFIG_IWLWIFI_DEBUGFS not being defined, then no MGMT and CTRL
2938 * information will be recorded, but DATA pkt still will be recorded
2939 * for the reason of iwl_led.c need to control the led blinking based on
2940 * number of tx and rx data.
2941 *
2942 */
2943 void iwl_update_stats(struct iwl_priv *priv, bool is_tx, __le16 fc, u16 len)
2944 {
2945 struct traffic_stats *stats;
2946
2947 if (is_tx)
2948 stats = &priv->tx_stats;
2949 else
2950 stats = &priv->rx_stats;
2951
2952 if (ieee80211_is_mgmt(fc)) {
2953 switch (fc & cpu_to_le16(IEEE80211_FCTL_STYPE)) {
2954 case cpu_to_le16(IEEE80211_STYPE_ASSOC_REQ):
2955 stats->mgmt[MANAGEMENT_ASSOC_REQ]++;
2956 break;
2957 case cpu_to_le16(IEEE80211_STYPE_ASSOC_RESP):
2958 stats->mgmt[MANAGEMENT_ASSOC_RESP]++;
2959 break;
2960 case cpu_to_le16(IEEE80211_STYPE_REASSOC_REQ):
2961 stats->mgmt[MANAGEMENT_REASSOC_REQ]++;
2962 break;
2963 case cpu_to_le16(IEEE80211_STYPE_REASSOC_RESP):
2964 stats->mgmt[MANAGEMENT_REASSOC_RESP]++;
2965 break;
2966 case cpu_to_le16(IEEE80211_STYPE_PROBE_REQ):
2967 stats->mgmt[MANAGEMENT_PROBE_REQ]++;
2968 break;
2969 case cpu_to_le16(IEEE80211_STYPE_PROBE_RESP):
2970 stats->mgmt[MANAGEMENT_PROBE_RESP]++;
2971 break;
2972 case cpu_to_le16(IEEE80211_STYPE_BEACON):
2973 stats->mgmt[MANAGEMENT_BEACON]++;
2974 break;
2975 case cpu_to_le16(IEEE80211_STYPE_ATIM):
2976 stats->mgmt[MANAGEMENT_ATIM]++;
2977 break;
2978 case cpu_to_le16(IEEE80211_STYPE_DISASSOC):
2979 stats->mgmt[MANAGEMENT_DISASSOC]++;
2980 break;
2981 case cpu_to_le16(IEEE80211_STYPE_AUTH):
2982 stats->mgmt[MANAGEMENT_AUTH]++;
2983 break;
2984 case cpu_to_le16(IEEE80211_STYPE_DEAUTH):
2985 stats->mgmt[MANAGEMENT_DEAUTH]++;
2986 break;
2987 case cpu_to_le16(IEEE80211_STYPE_ACTION):
2988 stats->mgmt[MANAGEMENT_ACTION]++;
2989 break;
2990 }
2991 } else if (ieee80211_is_ctl(fc)) {
2992 switch (fc & cpu_to_le16(IEEE80211_FCTL_STYPE)) {
2993 case cpu_to_le16(IEEE80211_STYPE_BACK_REQ):
2994 stats->ctrl[CONTROL_BACK_REQ]++;
2995 break;
2996 case cpu_to_le16(IEEE80211_STYPE_BACK):
2997 stats->ctrl[CONTROL_BACK]++;
2998 break;
2999 case cpu_to_le16(IEEE80211_STYPE_PSPOLL):
3000 stats->ctrl[CONTROL_PSPOLL]++;
3001 break;
3002 case cpu_to_le16(IEEE80211_STYPE_RTS):
3003 stats->ctrl[CONTROL_RTS]++;
3004 break;
3005 case cpu_to_le16(IEEE80211_STYPE_CTS):
3006 stats->ctrl[CONTROL_CTS]++;
3007 break;
3008 case cpu_to_le16(IEEE80211_STYPE_ACK):
3009 stats->ctrl[CONTROL_ACK]++;
3010 break;
3011 case cpu_to_le16(IEEE80211_STYPE_CFEND):
3012 stats->ctrl[CONTROL_CFEND]++;
3013 break;
3014 case cpu_to_le16(IEEE80211_STYPE_CFENDACK):
3015 stats->ctrl[CONTROL_CFENDACK]++;
3016 break;
3017 }
3018 } else {
3019 /* data */
3020 stats->data_cnt++;
3021 stats->data_bytes += len;
3022 }
3023 }
3024 EXPORT_SYMBOL(iwl_update_stats);
3025 #endif
3026
3027 #ifdef CONFIG_PM
3028
3029 int iwl_pci_suspend(struct pci_dev *pdev, pm_message_t state)
3030 {
3031 struct iwl_priv *priv = pci_get_drvdata(pdev);
3032
3033 /*
3034 * This function is called when system goes into suspend state
3035 * mac80211 will call iwl_mac_stop() from the mac80211 suspend function
3036 * first but since iwl_mac_stop() has no knowledge of who the caller is,
3037 * it will not call apm_ops.stop() to stop the DMA operation.
3038 * Calling apm_ops.stop here to make sure we stop the DMA.
3039 */
3040 priv->cfg->ops->lib->apm_ops.stop(priv);
3041
3042 pci_save_state(pdev);
3043 pci_disable_device(pdev);
3044 pci_set_power_state(pdev, PCI_D3hot);
3045
3046 return 0;
3047 }
3048 EXPORT_SYMBOL(iwl_pci_suspend);
3049
3050 int iwl_pci_resume(struct pci_dev *pdev)
3051 {
3052 struct iwl_priv *priv = pci_get_drvdata(pdev);
3053 int ret;
3054
3055 pci_set_power_state(pdev, PCI_D0);
3056 ret = pci_enable_device(pdev);
3057 if (ret)
3058 return ret;
3059 pci_restore_state(pdev);
3060 iwl_enable_interrupts(priv);
3061
3062 return 0;
3063 }
3064 EXPORT_SYMBOL(iwl_pci_resume);
3065
3066 #endif /* CONFIG_PM */
Linux 2.6 ibm-acpi/thinkpad-acpi driver git tree