iwlwifi: use station HT capabilities and BSS operating mode for Green-field
[pandora-kernel.git] / drivers / net / wireless / iwlwifi / iwl-core.c
1 /******************************************************************************
2  *
3  * GPL LICENSE SUMMARY
4  *
5  * Copyright(c) 2008 - 2009 Intel Corporation. All rights reserved.
6  *
7  * This program is free software; you can redistribute it and/or modify
8  * it under the terms of version 2 of the GNU General Public License as
9  * published by the Free Software Foundation.
10  *
11  * This program is distributed in the hope that it will be useful, but
12  * WITHOUT ANY WARRANTY; without even the implied warranty of
13  * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
14  * General Public License for more details.
15  *
16  * You should have received a copy of the GNU General Public License
17  * along with this program; if not, write to the Free Software
18  * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110,
19  * USA
20  *
21  * The full GNU General Public License is included in this distribution
22  * in the file called LICENSE.GPL.
23  *
24  * Contact Information:
25  *  Intel Linux Wireless <ilw@linux.intel.com>
26  * Intel Corporation, 5200 N.E. Elam Young Parkway, Hillsboro, OR 97124-6497
27  *****************************************************************************/
28
29 #include <linux/kernel.h>
30 #include <linux/module.h>
31 #include <linux/etherdevice.h>
32 #include <net/mac80211.h>
33
34 #include "iwl-eeprom.h"
35 #include "iwl-dev.h" /* FIXME: remove */
36 #include "iwl-debug.h"
37 #include "iwl-core.h"
38 #include "iwl-io.h"
39 #include "iwl-power.h"
40 #include "iwl-sta.h"
41 #include "iwl-helpers.h"
42
43
44 MODULE_DESCRIPTION("iwl core");
45 MODULE_VERSION(IWLWIFI_VERSION);
46 MODULE_AUTHOR(DRV_COPYRIGHT " " DRV_AUTHOR);
47 MODULE_LICENSE("GPL");
48
49 #define IWL_DECLARE_RATE_INFO(r, s, ip, in, rp, rn, pp, np)    \
50         [IWL_RATE_##r##M_INDEX] = { IWL_RATE_##r##M_PLCP,      \
51                                     IWL_RATE_SISO_##s##M_PLCP, \
52                                     IWL_RATE_MIMO2_##s##M_PLCP,\
53                                     IWL_RATE_MIMO3_##s##M_PLCP,\
54                                     IWL_RATE_##r##M_IEEE,      \
55                                     IWL_RATE_##ip##M_INDEX,    \
56                                     IWL_RATE_##in##M_INDEX,    \
57                                     IWL_RATE_##rp##M_INDEX,    \
58                                     IWL_RATE_##rn##M_INDEX,    \
59                                     IWL_RATE_##pp##M_INDEX,    \
60                                     IWL_RATE_##np##M_INDEX }
61
62 u32 iwl_debug_level;
63 EXPORT_SYMBOL(iwl_debug_level);
64
65 static irqreturn_t iwl_isr(int irq, void *data);
66
67 /*
68  * Parameter order:
69  *   rate, ht rate, prev rate, next rate, prev tgg rate, next tgg rate
70  *
71  * If there isn't a valid next or previous rate then INV is used which
72  * maps to IWL_RATE_INVALID
73  *
74  */
75 const struct iwl_rate_info iwl_rates[IWL_RATE_COUNT] = {
76         IWL_DECLARE_RATE_INFO(1, INV, INV, 2, INV, 2, INV, 2),    /*  1mbps */
77         IWL_DECLARE_RATE_INFO(2, INV, 1, 5, 1, 5, 1, 5),          /*  2mbps */
78         IWL_DECLARE_RATE_INFO(5, INV, 2, 6, 2, 11, 2, 11),        /*5.5mbps */
79         IWL_DECLARE_RATE_INFO(11, INV, 9, 12, 9, 12, 5, 18),      /* 11mbps */
80         IWL_DECLARE_RATE_INFO(6, 6, 5, 9, 5, 11, 5, 11),        /*  6mbps */
81         IWL_DECLARE_RATE_INFO(9, 6, 6, 11, 6, 11, 5, 11),       /*  9mbps */
82         IWL_DECLARE_RATE_INFO(12, 12, 11, 18, 11, 18, 11, 18),   /* 12mbps */
83         IWL_DECLARE_RATE_INFO(18, 18, 12, 24, 12, 24, 11, 24),   /* 18mbps */
84         IWL_DECLARE_RATE_INFO(24, 24, 18, 36, 18, 36, 18, 36),   /* 24mbps */
85         IWL_DECLARE_RATE_INFO(36, 36, 24, 48, 24, 48, 24, 48),   /* 36mbps */
86         IWL_DECLARE_RATE_INFO(48, 48, 36, 54, 36, 54, 36, 54),   /* 48mbps */
87         IWL_DECLARE_RATE_INFO(54, 54, 48, INV, 48, INV, 48, INV),/* 54mbps */
88         IWL_DECLARE_RATE_INFO(60, 60, 48, INV, 48, INV, 48, INV),/* 60mbps */
89         /* FIXME:RS:          ^^    should be INV (legacy) */
90 };
91 EXPORT_SYMBOL(iwl_rates);
92
93 /**
94  * translate ucode response to mac80211 tx status control values
95  */
96 void iwl_hwrate_to_tx_control(struct iwl_priv *priv, u32 rate_n_flags,
97                                   struct ieee80211_tx_info *info)
98 {
99         int rate_index;
100         struct ieee80211_tx_rate *r = &info->control.rates[0];
101
102         info->antenna_sel_tx =
103                 ((rate_n_flags & RATE_MCS_ANT_ABC_MSK) >> RATE_MCS_ANT_POS);
104         if (rate_n_flags & RATE_MCS_HT_MSK)
105                 r->flags |= IEEE80211_TX_RC_MCS;
106         if (rate_n_flags & RATE_MCS_GF_MSK)
107                 r->flags |= IEEE80211_TX_RC_GREEN_FIELD;
108         if (rate_n_flags & RATE_MCS_HT40_MSK)
109                 r->flags |= IEEE80211_TX_RC_40_MHZ_WIDTH;
110         if (rate_n_flags & RATE_MCS_DUP_MSK)
111                 r->flags |= IEEE80211_TX_RC_DUP_DATA;
112         if (rate_n_flags & RATE_MCS_SGI_MSK)
113                 r->flags |= IEEE80211_TX_RC_SHORT_GI;
114         rate_index = iwl_hwrate_to_plcp_idx(rate_n_flags);
115         if (info->band == IEEE80211_BAND_5GHZ)
116                 rate_index -= IWL_FIRST_OFDM_RATE;
117         r->idx = rate_index;
118 }
119 EXPORT_SYMBOL(iwl_hwrate_to_tx_control);
120
121 int iwl_hwrate_to_plcp_idx(u32 rate_n_flags)
122 {
123         int idx = 0;
124
125         /* HT rate format */
126         if (rate_n_flags & RATE_MCS_HT_MSK) {
127                 idx = (rate_n_flags & 0xff);
128
129                 if (idx >= IWL_RATE_MIMO3_6M_PLCP)
130                         idx = idx - IWL_RATE_MIMO3_6M_PLCP;
131                 else if (idx >= IWL_RATE_MIMO2_6M_PLCP)
132                         idx = idx - IWL_RATE_MIMO2_6M_PLCP;
133
134                 idx += IWL_FIRST_OFDM_RATE;
135                 /* skip 9M not supported in ht*/
136                 if (idx >= IWL_RATE_9M_INDEX)
137                         idx += 1;
138                 if ((idx >= IWL_FIRST_OFDM_RATE) && (idx <= IWL_LAST_OFDM_RATE))
139                         return idx;
140
141         /* legacy rate format, search for match in table */
142         } else {
143                 for (idx = 0; idx < ARRAY_SIZE(iwl_rates); idx++)
144                         if (iwl_rates[idx].plcp == (rate_n_flags & 0xFF))
145                                 return idx;
146         }
147
148         return -1;
149 }
150 EXPORT_SYMBOL(iwl_hwrate_to_plcp_idx);
151
152 u8 iwl_toggle_tx_ant(struct iwl_priv *priv, u8 ant)
153 {
154         int i;
155         u8 ind = ant;
156         for (i = 0; i < RATE_ANT_NUM - 1; i++) {
157                 ind = (ind + 1) < RATE_ANT_NUM ?  ind + 1 : 0;
158                 if (priv->hw_params.valid_tx_ant & BIT(ind))
159                         return ind;
160         }
161         return ant;
162 }
163
164 const u8 iwl_bcast_addr[ETH_ALEN] = { 0xFF, 0xFF, 0xFF, 0xFF, 0xFF, 0xFF };
165 EXPORT_SYMBOL(iwl_bcast_addr);
166
167
168 /* This function both allocates and initializes hw and priv. */
169 struct ieee80211_hw *iwl_alloc_all(struct iwl_cfg *cfg,
170                 struct ieee80211_ops *hw_ops)
171 {
172         struct iwl_priv *priv;
173
174         /* mac80211 allocates memory for this device instance, including
175          *   space for this driver's private structure */
176         struct ieee80211_hw *hw =
177                 ieee80211_alloc_hw(sizeof(struct iwl_priv), hw_ops);
178         if (hw == NULL) {
179                 printk(KERN_ERR "%s: Can not allocate network device\n",
180                        cfg->name);
181                 goto out;
182         }
183
184         priv = hw->priv;
185         priv->hw = hw;
186
187 out:
188         return hw;
189 }
190 EXPORT_SYMBOL(iwl_alloc_all);
191
192 void iwl_hw_detect(struct iwl_priv *priv)
193 {
194         priv->hw_rev = _iwl_read32(priv, CSR_HW_REV);
195         priv->hw_wa_rev = _iwl_read32(priv, CSR_HW_REV_WA_REG);
196         pci_read_config_byte(priv->pci_dev, PCI_REVISION_ID, &priv->rev_id);
197 }
198 EXPORT_SYMBOL(iwl_hw_detect);
199
200 int iwl_hw_nic_init(struct iwl_priv *priv)
201 {
202         unsigned long flags;
203         struct iwl_rx_queue *rxq = &priv->rxq;
204         int ret;
205
206         /* nic_init */
207         spin_lock_irqsave(&priv->lock, flags);
208         priv->cfg->ops->lib->apm_ops.init(priv);
209         iwl_write32(priv, CSR_INT_COALESCING, 512 / 32);
210         spin_unlock_irqrestore(&priv->lock, flags);
211
212         ret = priv->cfg->ops->lib->apm_ops.set_pwr_src(priv, IWL_PWR_SRC_VMAIN);
213
214         priv->cfg->ops->lib->apm_ops.config(priv);
215
216         /* Allocate the RX queue, or reset if it is already allocated */
217         if (!rxq->bd) {
218                 ret = iwl_rx_queue_alloc(priv);
219                 if (ret) {
220                         IWL_ERR(priv, "Unable to initialize Rx queue\n");
221                         return -ENOMEM;
222                 }
223         } else
224                 iwl_rx_queue_reset(priv, rxq);
225
226         iwl_rx_replenish(priv);
227
228         iwl_rx_init(priv, rxq);
229
230         spin_lock_irqsave(&priv->lock, flags);
231
232         rxq->need_update = 1;
233         iwl_rx_queue_update_write_ptr(priv, rxq);
234
235         spin_unlock_irqrestore(&priv->lock, flags);
236
237         /* Allocate and init all Tx and Command queues */
238         ret = iwl_txq_ctx_reset(priv);
239         if (ret)
240                 return ret;
241
242         set_bit(STATUS_INIT, &priv->status);
243
244         return 0;
245 }
246 EXPORT_SYMBOL(iwl_hw_nic_init);
247
248 /*
249  * QoS  support
250 */
251 void iwl_activate_qos(struct iwl_priv *priv, u8 force)
252 {
253         if (test_bit(STATUS_EXIT_PENDING, &priv->status))
254                 return;
255
256         priv->qos_data.def_qos_parm.qos_flags = 0;
257
258         if (priv->qos_data.qos_cap.q_AP.queue_request &&
259             !priv->qos_data.qos_cap.q_AP.txop_request)
260                 priv->qos_data.def_qos_parm.qos_flags |=
261                         QOS_PARAM_FLG_TXOP_TYPE_MSK;
262         if (priv->qos_data.qos_active)
263                 priv->qos_data.def_qos_parm.qos_flags |=
264                         QOS_PARAM_FLG_UPDATE_EDCA_MSK;
265
266         if (priv->current_ht_config.is_ht)
267                 priv->qos_data.def_qos_parm.qos_flags |= QOS_PARAM_FLG_TGN_MSK;
268
269         if (force || iwl_is_associated(priv)) {
270                 IWL_DEBUG_QOS(priv, "send QoS cmd with Qos active=%d FLAGS=0x%X\n",
271                                 priv->qos_data.qos_active,
272                                 priv->qos_data.def_qos_parm.qos_flags);
273
274                 iwl_send_cmd_pdu_async(priv, REPLY_QOS_PARAM,
275                                        sizeof(struct iwl_qosparam_cmd),
276                                        &priv->qos_data.def_qos_parm, NULL);
277         }
278 }
279 EXPORT_SYMBOL(iwl_activate_qos);
280
281 /*
282  * AC        CWmin         CW max      AIFSN      TXOP Limit    TXOP Limit
283  *                                              (802.11b)      (802.11a/g)
284  * AC_BK      15            1023        7           0               0
285  * AC_BE      15            1023        3           0               0
286  * AC_VI       7              15        2          6.016ms       3.008ms
287  * AC_VO       3               7        2          3.264ms       1.504ms
288  */
289 void iwl_reset_qos(struct iwl_priv *priv)
290 {
291         u16 cw_min = 15;
292         u16 cw_max = 1023;
293         u8 aifs = 2;
294         bool is_legacy = false;
295         unsigned long flags;
296         int i;
297
298         spin_lock_irqsave(&priv->lock, flags);
299         /* QoS always active in AP and ADHOC mode
300          * In STA mode wait for association
301          */
302         if (priv->iw_mode == NL80211_IFTYPE_ADHOC ||
303             priv->iw_mode == NL80211_IFTYPE_AP)
304                 priv->qos_data.qos_active = 1;
305         else
306                 priv->qos_data.qos_active = 0;
307
308         /* check for legacy mode */
309         if ((priv->iw_mode == NL80211_IFTYPE_ADHOC &&
310             (priv->active_rate & IWL_OFDM_RATES_MASK) == 0) ||
311             (priv->iw_mode == NL80211_IFTYPE_STATION &&
312             (priv->staging_rxon.flags & RXON_FLG_SHORT_SLOT_MSK) == 0)) {
313                 cw_min = 31;
314                 is_legacy = 1;
315         }
316
317         if (priv->qos_data.qos_active)
318                 aifs = 3;
319
320         /* AC_BE */
321         priv->qos_data.def_qos_parm.ac[0].cw_min = cpu_to_le16(cw_min);
322         priv->qos_data.def_qos_parm.ac[0].cw_max = cpu_to_le16(cw_max);
323         priv->qos_data.def_qos_parm.ac[0].aifsn = aifs;
324         priv->qos_data.def_qos_parm.ac[0].edca_txop = 0;
325         priv->qos_data.def_qos_parm.ac[0].reserved1 = 0;
326
327         if (priv->qos_data.qos_active) {
328                 /* AC_BK */
329                 i = 1;
330                 priv->qos_data.def_qos_parm.ac[i].cw_min = cpu_to_le16(cw_min);
331                 priv->qos_data.def_qos_parm.ac[i].cw_max = cpu_to_le16(cw_max);
332                 priv->qos_data.def_qos_parm.ac[i].aifsn = 7;
333                 priv->qos_data.def_qos_parm.ac[i].edca_txop = 0;
334                 priv->qos_data.def_qos_parm.ac[i].reserved1 = 0;
335
336                 /* AC_VI */
337                 i = 2;
338                 priv->qos_data.def_qos_parm.ac[i].cw_min =
339                         cpu_to_le16((cw_min + 1) / 2 - 1);
340                 priv->qos_data.def_qos_parm.ac[i].cw_max =
341                         cpu_to_le16(cw_min);
342                 priv->qos_data.def_qos_parm.ac[i].aifsn = 2;
343                 if (is_legacy)
344                         priv->qos_data.def_qos_parm.ac[i].edca_txop =
345                                 cpu_to_le16(6016);
346                 else
347                         priv->qos_data.def_qos_parm.ac[i].edca_txop =
348                                 cpu_to_le16(3008);
349                 priv->qos_data.def_qos_parm.ac[i].reserved1 = 0;
350
351                 /* AC_VO */
352                 i = 3;
353                 priv->qos_data.def_qos_parm.ac[i].cw_min =
354                         cpu_to_le16((cw_min + 1) / 4 - 1);
355                 priv->qos_data.def_qos_parm.ac[i].cw_max =
356                         cpu_to_le16((cw_min + 1) / 2 - 1);
357                 priv->qos_data.def_qos_parm.ac[i].aifsn = 2;
358                 priv->qos_data.def_qos_parm.ac[i].reserved1 = 0;
359                 if (is_legacy)
360                         priv->qos_data.def_qos_parm.ac[i].edca_txop =
361                                 cpu_to_le16(3264);
362                 else
363                         priv->qos_data.def_qos_parm.ac[i].edca_txop =
364                                 cpu_to_le16(1504);
365         } else {
366                 for (i = 1; i < 4; i++) {
367                         priv->qos_data.def_qos_parm.ac[i].cw_min =
368                                 cpu_to_le16(cw_min);
369                         priv->qos_data.def_qos_parm.ac[i].cw_max =
370                                 cpu_to_le16(cw_max);
371                         priv->qos_data.def_qos_parm.ac[i].aifsn = aifs;
372                         priv->qos_data.def_qos_parm.ac[i].edca_txop = 0;
373                         priv->qos_data.def_qos_parm.ac[i].reserved1 = 0;
374                 }
375         }
376         IWL_DEBUG_QOS(priv, "set QoS to default \n");
377
378         spin_unlock_irqrestore(&priv->lock, flags);
379 }
380 EXPORT_SYMBOL(iwl_reset_qos);
381
382 #define MAX_BIT_RATE_40_MHZ 150 /* Mbps */
383 #define MAX_BIT_RATE_20_MHZ 72 /* Mbps */
384 static void iwlcore_init_ht_hw_capab(const struct iwl_priv *priv,
385                               struct ieee80211_sta_ht_cap *ht_info,
386                               enum ieee80211_band band)
387 {
388         u16 max_bit_rate = 0;
389         u8 rx_chains_num = priv->hw_params.rx_chains_num;
390         u8 tx_chains_num = priv->hw_params.tx_chains_num;
391
392         ht_info->cap = 0;
393         memset(&ht_info->mcs, 0, sizeof(ht_info->mcs));
394
395         ht_info->ht_supported = true;
396
397         if (priv->cfg->ht_greenfield_support)
398                 ht_info->cap |= IEEE80211_HT_CAP_GRN_FLD;
399         ht_info->cap |= IEEE80211_HT_CAP_SGI_20;
400         ht_info->cap |= (IEEE80211_HT_CAP_SM_PS &
401                              (WLAN_HT_CAP_SM_PS_DISABLED << 2));
402
403         max_bit_rate = MAX_BIT_RATE_20_MHZ;
404         if (priv->hw_params.ht40_channel & BIT(band)) {
405                 ht_info->cap |= IEEE80211_HT_CAP_SUP_WIDTH_20_40;
406                 ht_info->cap |= IEEE80211_HT_CAP_SGI_40;
407                 ht_info->mcs.rx_mask[4] = 0x01;
408                 max_bit_rate = MAX_BIT_RATE_40_MHZ;
409         }
410
411         if (priv->cfg->mod_params->amsdu_size_8K)
412                 ht_info->cap |= IEEE80211_HT_CAP_MAX_AMSDU;
413
414         ht_info->ampdu_factor = CFG_HT_RX_AMPDU_FACTOR_DEF;
415         ht_info->ampdu_density = CFG_HT_MPDU_DENSITY_DEF;
416
417         ht_info->mcs.rx_mask[0] = 0xFF;
418         if (rx_chains_num >= 2)
419                 ht_info->mcs.rx_mask[1] = 0xFF;
420         if (rx_chains_num >= 3)
421                 ht_info->mcs.rx_mask[2] = 0xFF;
422
423         /* Highest supported Rx data rate */
424         max_bit_rate *= rx_chains_num;
425         WARN_ON(max_bit_rate & ~IEEE80211_HT_MCS_RX_HIGHEST_MASK);
426         ht_info->mcs.rx_highest = cpu_to_le16(max_bit_rate);
427
428         /* Tx MCS capabilities */
429         ht_info->mcs.tx_params = IEEE80211_HT_MCS_TX_DEFINED;
430         if (tx_chains_num != rx_chains_num) {
431                 ht_info->mcs.tx_params |= IEEE80211_HT_MCS_TX_RX_DIFF;
432                 ht_info->mcs.tx_params |= ((tx_chains_num - 1) <<
433                                 IEEE80211_HT_MCS_TX_MAX_STREAMS_SHIFT);
434         }
435 }
436
437 static void iwlcore_init_hw_rates(struct iwl_priv *priv,
438                               struct ieee80211_rate *rates)
439 {
440         int i;
441
442         for (i = 0; i < IWL_RATE_COUNT; i++) {
443                 rates[i].bitrate = iwl_rates[i].ieee * 5;
444                 rates[i].hw_value = i; /* Rate scaling will work on indexes */
445                 rates[i].hw_value_short = i;
446                 rates[i].flags = 0;
447                 if ((i > IWL_LAST_OFDM_RATE) || (i < IWL_FIRST_OFDM_RATE)) {
448                         /*
449                          * If CCK != 1M then set short preamble rate flag.
450                          */
451                         rates[i].flags |=
452                                 (iwl_rates[i].plcp == IWL_RATE_1M_PLCP) ?
453                                         0 : IEEE80211_RATE_SHORT_PREAMBLE;
454                 }
455         }
456 }
457
458
459 /**
460  * iwlcore_init_geos - Initialize mac80211's geo/channel info based from eeprom
461  */
462 int iwlcore_init_geos(struct iwl_priv *priv)
463 {
464         struct iwl_channel_info *ch;
465         struct ieee80211_supported_band *sband;
466         struct ieee80211_channel *channels;
467         struct ieee80211_channel *geo_ch;
468         struct ieee80211_rate *rates;
469         int i = 0;
470
471         if (priv->bands[IEEE80211_BAND_2GHZ].n_bitrates ||
472             priv->bands[IEEE80211_BAND_5GHZ].n_bitrates) {
473                 IWL_DEBUG_INFO(priv, "Geography modes already initialized.\n");
474                 set_bit(STATUS_GEO_CONFIGURED, &priv->status);
475                 return 0;
476         }
477
478         channels = kzalloc(sizeof(struct ieee80211_channel) *
479                            priv->channel_count, GFP_KERNEL);
480         if (!channels)
481                 return -ENOMEM;
482
483         rates = kzalloc((sizeof(struct ieee80211_rate) * (IWL_RATE_COUNT + 1)),
484                         GFP_KERNEL);
485         if (!rates) {
486                 kfree(channels);
487                 return -ENOMEM;
488         }
489
490         /* 5.2GHz channels start after the 2.4GHz channels */
491         sband = &priv->bands[IEEE80211_BAND_5GHZ];
492         sband->channels = &channels[ARRAY_SIZE(iwl_eeprom_band_1)];
493         /* just OFDM */
494         sband->bitrates = &rates[IWL_FIRST_OFDM_RATE];
495         sband->n_bitrates = IWL_RATE_COUNT - IWL_FIRST_OFDM_RATE;
496
497         if (priv->cfg->sku & IWL_SKU_N)
498                 iwlcore_init_ht_hw_capab(priv, &sband->ht_cap,
499                                          IEEE80211_BAND_5GHZ);
500
501         sband = &priv->bands[IEEE80211_BAND_2GHZ];
502         sband->channels = channels;
503         /* OFDM & CCK */
504         sband->bitrates = rates;
505         sband->n_bitrates = IWL_RATE_COUNT;
506
507         if (priv->cfg->sku & IWL_SKU_N)
508                 iwlcore_init_ht_hw_capab(priv, &sband->ht_cap,
509                                          IEEE80211_BAND_2GHZ);
510
511         priv->ieee_channels = channels;
512         priv->ieee_rates = rates;
513
514         for (i = 0;  i < priv->channel_count; i++) {
515                 ch = &priv->channel_info[i];
516
517                 /* FIXME: might be removed if scan is OK */
518                 if (!is_channel_valid(ch))
519                         continue;
520
521                 if (is_channel_a_band(ch))
522                         sband =  &priv->bands[IEEE80211_BAND_5GHZ];
523                 else
524                         sband =  &priv->bands[IEEE80211_BAND_2GHZ];
525
526                 geo_ch = &sband->channels[sband->n_channels++];
527
528                 geo_ch->center_freq =
529                                 ieee80211_channel_to_frequency(ch->channel);
530                 geo_ch->max_power = ch->max_power_avg;
531                 geo_ch->max_antenna_gain = 0xff;
532                 geo_ch->hw_value = ch->channel;
533
534                 if (is_channel_valid(ch)) {
535                         if (!(ch->flags & EEPROM_CHANNEL_IBSS))
536                                 geo_ch->flags |= IEEE80211_CHAN_NO_IBSS;
537
538                         if (!(ch->flags & EEPROM_CHANNEL_ACTIVE))
539                                 geo_ch->flags |= IEEE80211_CHAN_PASSIVE_SCAN;
540
541                         if (ch->flags & EEPROM_CHANNEL_RADAR)
542                                 geo_ch->flags |= IEEE80211_CHAN_RADAR;
543
544                         geo_ch->flags |= ch->ht40_extension_channel;
545
546                         if (ch->max_power_avg > priv->tx_power_channel_lmt)
547                                 priv->tx_power_channel_lmt = ch->max_power_avg;
548                 } else {
549                         geo_ch->flags |= IEEE80211_CHAN_DISABLED;
550                 }
551
552                 IWL_DEBUG_INFO(priv, "Channel %d Freq=%d[%sGHz] %s flag=0x%X\n",
553                                 ch->channel, geo_ch->center_freq,
554                                 is_channel_a_band(ch) ?  "5.2" : "2.4",
555                                 geo_ch->flags & IEEE80211_CHAN_DISABLED ?
556                                 "restricted" : "valid",
557                                  geo_ch->flags);
558         }
559
560         if ((priv->bands[IEEE80211_BAND_5GHZ].n_channels == 0) &&
561              priv->cfg->sku & IWL_SKU_A) {
562                 IWL_INFO(priv, "Incorrectly detected BG card as ABG. "
563                         "Please send your PCI ID 0x%04X:0x%04X to maintainer.\n",
564                            priv->pci_dev->device,
565                            priv->pci_dev->subsystem_device);
566                 priv->cfg->sku &= ~IWL_SKU_A;
567         }
568
569         IWL_INFO(priv, "Tunable channels: %d 802.11bg, %d 802.11a channels\n",
570                    priv->bands[IEEE80211_BAND_2GHZ].n_channels,
571                    priv->bands[IEEE80211_BAND_5GHZ].n_channels);
572
573         set_bit(STATUS_GEO_CONFIGURED, &priv->status);
574
575         return 0;
576 }
577 EXPORT_SYMBOL(iwlcore_init_geos);
578
579 /*
580  * iwlcore_free_geos - undo allocations in iwlcore_init_geos
581  */
582 void iwlcore_free_geos(struct iwl_priv *priv)
583 {
584         kfree(priv->ieee_channels);
585         kfree(priv->ieee_rates);
586         clear_bit(STATUS_GEO_CONFIGURED, &priv->status);
587 }
588 EXPORT_SYMBOL(iwlcore_free_geos);
589
590 static bool is_single_rx_stream(struct iwl_priv *priv)
591 {
592         return !priv->current_ht_config.is_ht ||
593                ((priv->current_ht_config.mcs.rx_mask[1] == 0) &&
594                 (priv->current_ht_config.mcs.rx_mask[2] == 0));
595 }
596
597 static u8 iwl_is_channel_extension(struct iwl_priv *priv,
598                                    enum ieee80211_band band,
599                                    u16 channel, u8 extension_chan_offset)
600 {
601         const struct iwl_channel_info *ch_info;
602
603         ch_info = iwl_get_channel_info(priv, band, channel);
604         if (!is_channel_valid(ch_info))
605                 return 0;
606
607         if (extension_chan_offset == IEEE80211_HT_PARAM_CHA_SEC_ABOVE)
608                 return !(ch_info->ht40_extension_channel &
609                                         IEEE80211_CHAN_NO_HT40PLUS);
610         else if (extension_chan_offset == IEEE80211_HT_PARAM_CHA_SEC_BELOW)
611                 return !(ch_info->ht40_extension_channel &
612                                         IEEE80211_CHAN_NO_HT40MINUS);
613
614         return 0;
615 }
616
617 u8 iwl_is_ht40_tx_allowed(struct iwl_priv *priv,
618                          struct ieee80211_sta_ht_cap *sta_ht_inf)
619 {
620         struct iwl_ht_info *iwl_ht_conf = &priv->current_ht_config;
621
622         if ((!iwl_ht_conf->is_ht) ||
623             (iwl_ht_conf->supported_chan_width != IWL_CHANNEL_WIDTH_40MHZ))
624                 return 0;
625
626         /* We do not check for IEEE80211_HT_CAP_SUP_WIDTH_20_40
627          * the bit will not set if it is pure 40MHz case
628          */
629         if (sta_ht_inf) {
630                 if (!sta_ht_inf->ht_supported)
631                         return 0;
632         }
633 #ifdef CONFIG_IWLWIFI_DEBUG
634         if (priv->disable_ht40)
635                 return 0;
636 #endif
637         return iwl_is_channel_extension(priv, priv->band,
638                         le16_to_cpu(priv->staging_rxon.channel),
639                         iwl_ht_conf->extension_chan_offset);
640 }
641 EXPORT_SYMBOL(iwl_is_ht40_tx_allowed);
642
643 static u16 iwl_adjust_beacon_interval(u16 beacon_val, u16 max_beacon_val)
644 {
645         u16 new_val = 0;
646         u16 beacon_factor = 0;
647
648         beacon_factor = (beacon_val + max_beacon_val) / max_beacon_val;
649         new_val = beacon_val / beacon_factor;
650
651         if (!new_val)
652                 new_val = max_beacon_val;
653
654         return new_val;
655 }
656
657 void iwl_setup_rxon_timing(struct iwl_priv *priv)
658 {
659         u64 tsf;
660         s32 interval_tm, rem;
661         unsigned long flags;
662         struct ieee80211_conf *conf = NULL;
663         u16 beacon_int;
664
665         conf = ieee80211_get_hw_conf(priv->hw);
666
667         spin_lock_irqsave(&priv->lock, flags);
668         priv->rxon_timing.timestamp = cpu_to_le64(priv->timestamp);
669         priv->rxon_timing.listen_interval = cpu_to_le16(conf->listen_interval);
670
671         if (priv->iw_mode == NL80211_IFTYPE_STATION) {
672                 beacon_int = priv->beacon_int;
673                 priv->rxon_timing.atim_window = 0;
674         } else {
675                 beacon_int = priv->vif->bss_conf.beacon_int;
676
677                 /* TODO: we need to get atim_window from upper stack
678                  * for now we set to 0 */
679                 priv->rxon_timing.atim_window = 0;
680         }
681
682         beacon_int = iwl_adjust_beacon_interval(beacon_int,
683                                 priv->hw_params.max_beacon_itrvl * 1024);
684         priv->rxon_timing.beacon_interval = cpu_to_le16(beacon_int);
685
686         tsf = priv->timestamp; /* tsf is modifed by do_div: copy it */
687         interval_tm = beacon_int * 1024;
688         rem = do_div(tsf, interval_tm);
689         priv->rxon_timing.beacon_init_val = cpu_to_le32(interval_tm - rem);
690
691         spin_unlock_irqrestore(&priv->lock, flags);
692         IWL_DEBUG_ASSOC(priv,
693                         "beacon interval %d beacon timer %d beacon tim %d\n",
694                         le16_to_cpu(priv->rxon_timing.beacon_interval),
695                         le32_to_cpu(priv->rxon_timing.beacon_init_val),
696                         le16_to_cpu(priv->rxon_timing.atim_window));
697 }
698 EXPORT_SYMBOL(iwl_setup_rxon_timing);
699
700 void iwl_set_rxon_hwcrypto(struct iwl_priv *priv, int hw_decrypt)
701 {
702         struct iwl_rxon_cmd *rxon = &priv->staging_rxon;
703
704         if (hw_decrypt)
705                 rxon->filter_flags &= ~RXON_FILTER_DIS_DECRYPT_MSK;
706         else
707                 rxon->filter_flags |= RXON_FILTER_DIS_DECRYPT_MSK;
708
709 }
710 EXPORT_SYMBOL(iwl_set_rxon_hwcrypto);
711
712 /**
713  * iwl_check_rxon_cmd - validate RXON structure is valid
714  *
715  * NOTE:  This is really only useful during development and can eventually
716  * be #ifdef'd out once the driver is stable and folks aren't actively
717  * making changes
718  */
719 int iwl_check_rxon_cmd(struct iwl_priv *priv)
720 {
721         int error = 0;
722         int counter = 1;
723         struct iwl_rxon_cmd *rxon = &priv->staging_rxon;
724
725         if (rxon->flags & RXON_FLG_BAND_24G_MSK) {
726                 error |= le32_to_cpu(rxon->flags &
727                                 (RXON_FLG_TGJ_NARROW_BAND_MSK |
728                                  RXON_FLG_RADAR_DETECT_MSK));
729                 if (error)
730                         IWL_WARN(priv, "check 24G fields %d | %d\n",
731                                     counter++, error);
732         } else {
733                 error |= (rxon->flags & RXON_FLG_SHORT_SLOT_MSK) ?
734                                 0 : le32_to_cpu(RXON_FLG_SHORT_SLOT_MSK);
735                 if (error)
736                         IWL_WARN(priv, "check 52 fields %d | %d\n",
737                                     counter++, error);
738                 error |= le32_to_cpu(rxon->flags & RXON_FLG_CCK_MSK);
739                 if (error)
740                         IWL_WARN(priv, "check 52 CCK %d | %d\n",
741                                     counter++, error);
742         }
743         error |= (rxon->node_addr[0] | rxon->bssid_addr[0]) & 0x1;
744         if (error)
745                 IWL_WARN(priv, "check mac addr %d | %d\n", counter++, error);
746
747         /* make sure basic rates 6Mbps and 1Mbps are supported */
748         error |= (((rxon->ofdm_basic_rates & IWL_RATE_6M_MASK) == 0) &&
749                   ((rxon->cck_basic_rates & IWL_RATE_1M_MASK) == 0));
750         if (error)
751                 IWL_WARN(priv, "check basic rate %d | %d\n", counter++, error);
752
753         error |= (le16_to_cpu(rxon->assoc_id) > 2007);
754         if (error)
755                 IWL_WARN(priv, "check assoc id %d | %d\n", counter++, error);
756
757         error |= ((rxon->flags & (RXON_FLG_CCK_MSK | RXON_FLG_SHORT_SLOT_MSK))
758                         == (RXON_FLG_CCK_MSK | RXON_FLG_SHORT_SLOT_MSK));
759         if (error)
760                 IWL_WARN(priv, "check CCK and short slot %d | %d\n",
761                             counter++, error);
762
763         error |= ((rxon->flags & (RXON_FLG_CCK_MSK | RXON_FLG_AUTO_DETECT_MSK))
764                         == (RXON_FLG_CCK_MSK | RXON_FLG_AUTO_DETECT_MSK));
765         if (error)
766                 IWL_WARN(priv, "check CCK & auto detect %d | %d\n",
767                             counter++, error);
768
769         error |= ((rxon->flags & (RXON_FLG_AUTO_DETECT_MSK |
770                         RXON_FLG_TGG_PROTECT_MSK)) == RXON_FLG_TGG_PROTECT_MSK);
771         if (error)
772                 IWL_WARN(priv, "check TGG and auto detect %d | %d\n",
773                             counter++, error);
774
775         if (error)
776                 IWL_WARN(priv, "Tuning to channel %d\n",
777                             le16_to_cpu(rxon->channel));
778
779         if (error) {
780                 IWL_ERR(priv, "Not a valid iwl_rxon_assoc_cmd field values\n");
781                 return -1;
782         }
783         return 0;
784 }
785 EXPORT_SYMBOL(iwl_check_rxon_cmd);
786
787 /**
788  * iwl_full_rxon_required - check if full RXON (vs RXON_ASSOC) cmd is needed
789  * @priv: staging_rxon is compared to active_rxon
790  *
791  * If the RXON structure is changing enough to require a new tune,
792  * or is clearing the RXON_FILTER_ASSOC_MSK, then return 1 to indicate that
793  * a new tune (full RXON command, rather than RXON_ASSOC cmd) is required.
794  */
795 int iwl_full_rxon_required(struct iwl_priv *priv)
796 {
797
798         /* These items are only settable from the full RXON command */
799         if (!(iwl_is_associated(priv)) ||
800             compare_ether_addr(priv->staging_rxon.bssid_addr,
801                                priv->active_rxon.bssid_addr) ||
802             compare_ether_addr(priv->staging_rxon.node_addr,
803                                priv->active_rxon.node_addr) ||
804             compare_ether_addr(priv->staging_rxon.wlap_bssid_addr,
805                                priv->active_rxon.wlap_bssid_addr) ||
806             (priv->staging_rxon.dev_type != priv->active_rxon.dev_type) ||
807             (priv->staging_rxon.channel != priv->active_rxon.channel) ||
808             (priv->staging_rxon.air_propagation !=
809              priv->active_rxon.air_propagation) ||
810             (priv->staging_rxon.ofdm_ht_single_stream_basic_rates !=
811              priv->active_rxon.ofdm_ht_single_stream_basic_rates) ||
812             (priv->staging_rxon.ofdm_ht_dual_stream_basic_rates !=
813              priv->active_rxon.ofdm_ht_dual_stream_basic_rates) ||
814             (priv->staging_rxon.ofdm_ht_triple_stream_basic_rates !=
815              priv->active_rxon.ofdm_ht_triple_stream_basic_rates) ||
816             (priv->staging_rxon.assoc_id != priv->active_rxon.assoc_id))
817                 return 1;
818
819         /* flags, filter_flags, ofdm_basic_rates, and cck_basic_rates can
820          * be updated with the RXON_ASSOC command -- however only some
821          * flag transitions are allowed using RXON_ASSOC */
822
823         /* Check if we are not switching bands */
824         if ((priv->staging_rxon.flags & RXON_FLG_BAND_24G_MSK) !=
825             (priv->active_rxon.flags & RXON_FLG_BAND_24G_MSK))
826                 return 1;
827
828         /* Check if we are switching association toggle */
829         if ((priv->staging_rxon.filter_flags & RXON_FILTER_ASSOC_MSK) !=
830                 (priv->active_rxon.filter_flags & RXON_FILTER_ASSOC_MSK))
831                 return 1;
832
833         return 0;
834 }
835 EXPORT_SYMBOL(iwl_full_rxon_required);
836
837 u8 iwl_rate_get_lowest_plcp(struct iwl_priv *priv)
838 {
839         int i;
840         int rate_mask;
841
842         /* Set rate mask*/
843         if (priv->staging_rxon.flags & RXON_FLG_BAND_24G_MSK)
844                 rate_mask = priv->active_rate_basic & IWL_CCK_RATES_MASK;
845         else
846                 rate_mask = priv->active_rate_basic & IWL_OFDM_RATES_MASK;
847
848         /* Find lowest valid rate */
849         for (i = IWL_RATE_1M_INDEX; i != IWL_RATE_INVALID;
850                                         i = iwl_rates[i].next_ieee) {
851                 if (rate_mask & (1 << i))
852                         return iwl_rates[i].plcp;
853         }
854
855         /* No valid rate was found. Assign the lowest one */
856         if (priv->staging_rxon.flags & RXON_FLG_BAND_24G_MSK)
857                 return IWL_RATE_1M_PLCP;
858         else
859                 return IWL_RATE_6M_PLCP;
860 }
861 EXPORT_SYMBOL(iwl_rate_get_lowest_plcp);
862
863 void iwl_set_rxon_ht(struct iwl_priv *priv, struct iwl_ht_info *ht_info)
864 {
865         struct iwl_rxon_cmd *rxon = &priv->staging_rxon;
866
867         if (!ht_info->is_ht) {
868                 rxon->flags &= ~(RXON_FLG_CHANNEL_MODE_MSK |
869                         RXON_FLG_CTRL_CHANNEL_LOC_HI_MSK |
870                         RXON_FLG_HT40_PROT_MSK |
871                         RXON_FLG_HT_PROT_MSK);
872                 return;
873         }
874
875         /* FIXME: if the definition of ht_protection changed, the "translation"
876          * will be needed for rxon->flags
877          */
878         rxon->flags |= cpu_to_le32(ht_info->ht_protection << RXON_FLG_HT_OPERATING_MODE_POS);
879
880         /* Set up channel bandwidth:
881          * 20 MHz only, 20/40 mixed or pure 40 if ht40 ok */
882         /* clear the HT channel mode before set the mode */
883         rxon->flags &= ~(RXON_FLG_CHANNEL_MODE_MSK |
884                          RXON_FLG_CTRL_CHANNEL_LOC_HI_MSK);
885         if (iwl_is_ht40_tx_allowed(priv, NULL)) {
886                 /* pure ht40 */
887                 if (ht_info->ht_protection == IEEE80211_HT_OP_MODE_PROTECTION_20MHZ) {
888                         rxon->flags |= RXON_FLG_CHANNEL_MODE_PURE_40;
889                         /* Note: control channel is opposite of extension channel */
890                         switch (ht_info->extension_chan_offset) {
891                         case IEEE80211_HT_PARAM_CHA_SEC_ABOVE:
892                                 rxon->flags &= ~RXON_FLG_CTRL_CHANNEL_LOC_HI_MSK;
893                                 break;
894                         case IEEE80211_HT_PARAM_CHA_SEC_BELOW:
895                                 rxon->flags |= RXON_FLG_CTRL_CHANNEL_LOC_HI_MSK;
896                                 break;
897                         }
898                 } else {
899                         /* Note: control channel is opposite of extension channel */
900                         switch (ht_info->extension_chan_offset) {
901                         case IEEE80211_HT_PARAM_CHA_SEC_ABOVE:
902                                 rxon->flags &= ~(RXON_FLG_CTRL_CHANNEL_LOC_HI_MSK);
903                                 rxon->flags |= RXON_FLG_CHANNEL_MODE_MIXED;
904                                 break;
905                         case IEEE80211_HT_PARAM_CHA_SEC_BELOW:
906                                 rxon->flags |= RXON_FLG_CTRL_CHANNEL_LOC_HI_MSK;
907                                 rxon->flags |= RXON_FLG_CHANNEL_MODE_MIXED;
908                                 break;
909                         case IEEE80211_HT_PARAM_CHA_SEC_NONE:
910                         default:
911                                 /* channel location only valid if in Mixed mode */
912                                 IWL_ERR(priv, "invalid extension channel offset\n");
913                                 break;
914                         }
915                 }
916         } else {
917                 rxon->flags |= RXON_FLG_CHANNEL_MODE_LEGACY;
918         }
919
920         if (priv->cfg->ops->hcmd->set_rxon_chain)
921                 priv->cfg->ops->hcmd->set_rxon_chain(priv);
922
923         IWL_DEBUG_ASSOC(priv, "supported HT rate 0x%X 0x%X 0x%X "
924                         "rxon flags 0x%X operation mode :0x%X "
925                         "extension channel offset 0x%x\n",
926                         ht_info->mcs.rx_mask[0],
927                         ht_info->mcs.rx_mask[1],
928                         ht_info->mcs.rx_mask[2],
929                         le32_to_cpu(rxon->flags), ht_info->ht_protection,
930                         ht_info->extension_chan_offset);
931         return;
932 }
933 EXPORT_SYMBOL(iwl_set_rxon_ht);
934
935 #define IWL_NUM_RX_CHAINS_MULTIPLE      3
936 #define IWL_NUM_RX_CHAINS_SINGLE        2
937 #define IWL_NUM_IDLE_CHAINS_DUAL        2
938 #define IWL_NUM_IDLE_CHAINS_SINGLE      1
939
940 /* Determine how many receiver/antenna chains to use.
941  * More provides better reception via diversity.  Fewer saves power.
942  * MIMO (dual stream) requires at least 2, but works better with 3.
943  * This does not determine *which* chains to use, just how many.
944  */
945 static int iwl_get_active_rx_chain_count(struct iwl_priv *priv)
946 {
947         bool is_single = is_single_rx_stream(priv);
948         bool is_cam = !test_bit(STATUS_POWER_PMI, &priv->status);
949
950         /* # of Rx chains to use when expecting MIMO. */
951         if (is_single || (!is_cam && (priv->current_ht_config.sm_ps ==
952                                                  WLAN_HT_CAP_SM_PS_STATIC)))
953                 return IWL_NUM_RX_CHAINS_SINGLE;
954         else
955                 return IWL_NUM_RX_CHAINS_MULTIPLE;
956 }
957
958 static int iwl_get_idle_rx_chain_count(struct iwl_priv *priv, int active_cnt)
959 {
960         int idle_cnt;
961         bool is_cam = !test_bit(STATUS_POWER_PMI, &priv->status);
962         /* # Rx chains when idling and maybe trying to save power */
963         switch (priv->current_ht_config.sm_ps) {
964         case WLAN_HT_CAP_SM_PS_STATIC:
965         case WLAN_HT_CAP_SM_PS_DYNAMIC:
966                 idle_cnt = (is_cam) ? IWL_NUM_IDLE_CHAINS_DUAL :
967                                         IWL_NUM_IDLE_CHAINS_SINGLE;
968                 break;
969         case WLAN_HT_CAP_SM_PS_DISABLED:
970                 idle_cnt = (is_cam) ? active_cnt : IWL_NUM_IDLE_CHAINS_SINGLE;
971                 break;
972         case WLAN_HT_CAP_SM_PS_INVALID:
973         default:
974                 IWL_ERR(priv, "invalid mimo ps mode %d\n",
975                            priv->current_ht_config.sm_ps);
976                 WARN_ON(1);
977                 idle_cnt = -1;
978                 break;
979         }
980         return idle_cnt;
981 }
982
983 /* up to 4 chains */
984 static u8 iwl_count_chain_bitmap(u32 chain_bitmap)
985 {
986         u8 res;
987         res = (chain_bitmap & BIT(0)) >> 0;
988         res += (chain_bitmap & BIT(1)) >> 1;
989         res += (chain_bitmap & BIT(2)) >> 2;
990         res += (chain_bitmap & BIT(4)) >> 4;
991         return res;
992 }
993
994 /**
995  * iwl_is_monitor_mode - Determine if interface in monitor mode
996  *
997  * priv->iw_mode is set in add_interface, but add_interface is
998  * never called for monitor mode. The only way mac80211 informs us about
999  * monitor mode is through configuring filters (call to configure_filter).
1000  */
1001 bool iwl_is_monitor_mode(struct iwl_priv *priv)
1002 {
1003         return !!(priv->staging_rxon.filter_flags & RXON_FILTER_PROMISC_MSK);
1004 }
1005 EXPORT_SYMBOL(iwl_is_monitor_mode);
1006
1007 /**
1008  * iwl_set_rxon_chain - Set up Rx chain usage in "staging" RXON image
1009  *
1010  * Selects how many and which Rx receivers/antennas/chains to use.
1011  * This should not be used for scan command ... it puts data in wrong place.
1012  */
1013 void iwl_set_rxon_chain(struct iwl_priv *priv)
1014 {
1015         bool is_single = is_single_rx_stream(priv);
1016         bool is_cam = !test_bit(STATUS_POWER_PMI, &priv->status);
1017         u8 idle_rx_cnt, active_rx_cnt, valid_rx_cnt;
1018         u32 active_chains;
1019         u16 rx_chain;
1020
1021         /* Tell uCode which antennas are actually connected.
1022          * Before first association, we assume all antennas are connected.
1023          * Just after first association, iwl_chain_noise_calibration()
1024          *    checks which antennas actually *are* connected. */
1025          if (priv->chain_noise_data.active_chains)
1026                 active_chains = priv->chain_noise_data.active_chains;
1027         else
1028                 active_chains = priv->hw_params.valid_rx_ant;
1029
1030         rx_chain = active_chains << RXON_RX_CHAIN_VALID_POS;
1031
1032         /* How many receivers should we use? */
1033         active_rx_cnt = iwl_get_active_rx_chain_count(priv);
1034         idle_rx_cnt = iwl_get_idle_rx_chain_count(priv, active_rx_cnt);
1035
1036
1037         /* correct rx chain count according hw settings
1038          * and chain noise calibration
1039          */
1040         valid_rx_cnt = iwl_count_chain_bitmap(active_chains);
1041         if (valid_rx_cnt < active_rx_cnt)
1042                 active_rx_cnt = valid_rx_cnt;
1043
1044         if (valid_rx_cnt < idle_rx_cnt)
1045                 idle_rx_cnt = valid_rx_cnt;
1046
1047         rx_chain |= active_rx_cnt << RXON_RX_CHAIN_MIMO_CNT_POS;
1048         rx_chain |= idle_rx_cnt  << RXON_RX_CHAIN_CNT_POS;
1049
1050         /* copied from 'iwl_bg_request_scan()' */
1051         /* Force use of chains B and C (0x6) for Rx for 4965
1052          * Avoid A (0x1) because of its off-channel reception on A-band.
1053          * MIMO is not used here, but value is required */
1054         if (iwl_is_monitor_mode(priv) &&
1055             !(priv->staging_rxon.flags & RXON_FLG_BAND_24G_MSK) &&
1056             ((priv->hw_rev & CSR_HW_REV_TYPE_MSK) == CSR_HW_REV_TYPE_4965)) {
1057                 rx_chain = ANT_ABC << RXON_RX_CHAIN_VALID_POS;
1058                 rx_chain |= ANT_BC << RXON_RX_CHAIN_FORCE_SEL_POS;
1059                 rx_chain |= ANT_ABC << RXON_RX_CHAIN_FORCE_MIMO_SEL_POS;
1060                 rx_chain |= 0x1 << RXON_RX_CHAIN_DRIVER_FORCE_POS;
1061         }
1062
1063         priv->staging_rxon.rx_chain = cpu_to_le16(rx_chain);
1064
1065         if (!is_single && (active_rx_cnt >= IWL_NUM_RX_CHAINS_SINGLE) && is_cam)
1066                 priv->staging_rxon.rx_chain |= RXON_RX_CHAIN_MIMO_FORCE_MSK;
1067         else
1068                 priv->staging_rxon.rx_chain &= ~RXON_RX_CHAIN_MIMO_FORCE_MSK;
1069
1070         IWL_DEBUG_ASSOC(priv, "rx_chain=0x%X active=%d idle=%d\n",
1071                         priv->staging_rxon.rx_chain,
1072                         active_rx_cnt, idle_rx_cnt);
1073
1074         WARN_ON(active_rx_cnt == 0 || idle_rx_cnt == 0 ||
1075                 active_rx_cnt < idle_rx_cnt);
1076 }
1077 EXPORT_SYMBOL(iwl_set_rxon_chain);
1078
1079 /**
1080  * iwl_set_rxon_channel - Set the phymode and channel values in staging RXON
1081  * @phymode: MODE_IEEE80211A sets to 5.2GHz; all else set to 2.4GHz
1082  * @channel: Any channel valid for the requested phymode
1083
1084  * In addition to setting the staging RXON, priv->phymode is also set.
1085  *
1086  * NOTE:  Does not commit to the hardware; it sets appropriate bit fields
1087  * in the staging RXON flag structure based on the phymode
1088  */
1089 int iwl_set_rxon_channel(struct iwl_priv *priv, struct ieee80211_channel *ch)
1090 {
1091         enum ieee80211_band band = ch->band;
1092         u16 channel = ieee80211_frequency_to_channel(ch->center_freq);
1093
1094         if (!iwl_get_channel_info(priv, band, channel)) {
1095                 IWL_DEBUG_INFO(priv, "Could not set channel to %d [%d]\n",
1096                                channel, band);
1097                 return -EINVAL;
1098         }
1099
1100         if ((le16_to_cpu(priv->staging_rxon.channel) == channel) &&
1101             (priv->band == band))
1102                 return 0;
1103
1104         priv->staging_rxon.channel = cpu_to_le16(channel);
1105         if (band == IEEE80211_BAND_5GHZ)
1106                 priv->staging_rxon.flags &= ~RXON_FLG_BAND_24G_MSK;
1107         else
1108                 priv->staging_rxon.flags |= RXON_FLG_BAND_24G_MSK;
1109
1110         priv->band = band;
1111
1112         IWL_DEBUG_INFO(priv, "Staging channel set to %d [%d]\n", channel, band);
1113
1114         return 0;
1115 }
1116 EXPORT_SYMBOL(iwl_set_rxon_channel);
1117
1118 void iwl_set_flags_for_band(struct iwl_priv *priv,
1119                             enum ieee80211_band band)
1120 {
1121         if (band == IEEE80211_BAND_5GHZ) {
1122                 priv->staging_rxon.flags &=
1123                     ~(RXON_FLG_BAND_24G_MSK | RXON_FLG_AUTO_DETECT_MSK
1124                       | RXON_FLG_CCK_MSK);
1125                 priv->staging_rxon.flags |= RXON_FLG_SHORT_SLOT_MSK;
1126         } else {
1127                 /* Copied from iwl_post_associate() */
1128                 if (priv->assoc_capability & WLAN_CAPABILITY_SHORT_SLOT_TIME)
1129                         priv->staging_rxon.flags |= RXON_FLG_SHORT_SLOT_MSK;
1130                 else
1131                         priv->staging_rxon.flags &= ~RXON_FLG_SHORT_SLOT_MSK;
1132
1133                 if (priv->iw_mode == NL80211_IFTYPE_ADHOC)
1134                         priv->staging_rxon.flags &= ~RXON_FLG_SHORT_SLOT_MSK;
1135
1136                 priv->staging_rxon.flags |= RXON_FLG_BAND_24G_MSK;
1137                 priv->staging_rxon.flags |= RXON_FLG_AUTO_DETECT_MSK;
1138                 priv->staging_rxon.flags &= ~RXON_FLG_CCK_MSK;
1139         }
1140 }
1141
1142 /*
1143  * initialize rxon structure with default values from eeprom
1144  */
1145 void iwl_connection_init_rx_config(struct iwl_priv *priv, int mode)
1146 {
1147         const struct iwl_channel_info *ch_info;
1148
1149         memset(&priv->staging_rxon, 0, sizeof(priv->staging_rxon));
1150
1151         switch (mode) {
1152         case NL80211_IFTYPE_AP:
1153                 priv->staging_rxon.dev_type = RXON_DEV_TYPE_AP;
1154                 break;
1155
1156         case NL80211_IFTYPE_STATION:
1157                 priv->staging_rxon.dev_type = RXON_DEV_TYPE_ESS;
1158                 priv->staging_rxon.filter_flags = RXON_FILTER_ACCEPT_GRP_MSK;
1159                 break;
1160
1161         case NL80211_IFTYPE_ADHOC:
1162                 priv->staging_rxon.dev_type = RXON_DEV_TYPE_IBSS;
1163                 priv->staging_rxon.flags = RXON_FLG_SHORT_PREAMBLE_MSK;
1164                 priv->staging_rxon.filter_flags = RXON_FILTER_BCON_AWARE_MSK |
1165                                                   RXON_FILTER_ACCEPT_GRP_MSK;
1166                 break;
1167
1168         default:
1169                 IWL_ERR(priv, "Unsupported interface type %d\n", mode);
1170                 break;
1171         }
1172
1173 #if 0
1174         /* TODO:  Figure out when short_preamble would be set and cache from
1175          * that */
1176         if (!hw_to_local(priv->hw)->short_preamble)
1177                 priv->staging_rxon.flags &= ~RXON_FLG_SHORT_PREAMBLE_MSK;
1178         else
1179                 priv->staging_rxon.flags |= RXON_FLG_SHORT_PREAMBLE_MSK;
1180 #endif
1181
1182         ch_info = iwl_get_channel_info(priv, priv->band,
1183                                        le16_to_cpu(priv->active_rxon.channel));
1184
1185         if (!ch_info)
1186                 ch_info = &priv->channel_info[0];
1187
1188         /*
1189          * in some case A channels are all non IBSS
1190          * in this case force B/G channel
1191          */
1192         if ((priv->iw_mode == NL80211_IFTYPE_ADHOC) &&
1193             !(is_channel_ibss(ch_info)))
1194                 ch_info = &priv->channel_info[0];
1195
1196         priv->staging_rxon.channel = cpu_to_le16(ch_info->channel);
1197         priv->band = ch_info->band;
1198
1199         iwl_set_flags_for_band(priv, priv->band);
1200
1201         priv->staging_rxon.ofdm_basic_rates =
1202             (IWL_OFDM_RATES_MASK >> IWL_FIRST_OFDM_RATE) & 0xFF;
1203         priv->staging_rxon.cck_basic_rates =
1204             (IWL_CCK_RATES_MASK >> IWL_FIRST_CCK_RATE) & 0xF;
1205
1206         /* clear both MIX and PURE40 mode flag */
1207         priv->staging_rxon.flags &= ~(RXON_FLG_CHANNEL_MODE_MIXED |
1208                                         RXON_FLG_CHANNEL_MODE_PURE_40);
1209         memcpy(priv->staging_rxon.node_addr, priv->mac_addr, ETH_ALEN);
1210         memcpy(priv->staging_rxon.wlap_bssid_addr, priv->mac_addr, ETH_ALEN);
1211         priv->staging_rxon.ofdm_ht_single_stream_basic_rates = 0xff;
1212         priv->staging_rxon.ofdm_ht_dual_stream_basic_rates = 0xff;
1213         priv->staging_rxon.ofdm_ht_triple_stream_basic_rates = 0xff;
1214 }
1215 EXPORT_SYMBOL(iwl_connection_init_rx_config);
1216
1217 static void iwl_set_rate(struct iwl_priv *priv)
1218 {
1219         const struct ieee80211_supported_band *hw = NULL;
1220         struct ieee80211_rate *rate;
1221         int i;
1222
1223         hw = iwl_get_hw_mode(priv, priv->band);
1224         if (!hw) {
1225                 IWL_ERR(priv, "Failed to set rate: unable to get hw mode\n");
1226                 return;
1227         }
1228
1229         priv->active_rate = 0;
1230         priv->active_rate_basic = 0;
1231
1232         for (i = 0; i < hw->n_bitrates; i++) {
1233                 rate = &(hw->bitrates[i]);
1234                 if (rate->hw_value < IWL_RATE_COUNT)
1235                         priv->active_rate |= (1 << rate->hw_value);
1236         }
1237
1238         IWL_DEBUG_RATE(priv, "Set active_rate = %0x, active_rate_basic = %0x\n",
1239                        priv->active_rate, priv->active_rate_basic);
1240
1241         /*
1242          * If a basic rate is configured, then use it (adding IWL_RATE_1M_MASK)
1243          * otherwise set it to the default of all CCK rates and 6, 12, 24 for
1244          * OFDM
1245          */
1246         if (priv->active_rate_basic & IWL_CCK_BASIC_RATES_MASK)
1247                 priv->staging_rxon.cck_basic_rates =
1248                     ((priv->active_rate_basic &
1249                       IWL_CCK_RATES_MASK) >> IWL_FIRST_CCK_RATE) & 0xF;
1250         else
1251                 priv->staging_rxon.cck_basic_rates =
1252                     (IWL_CCK_BASIC_RATES_MASK >> IWL_FIRST_CCK_RATE) & 0xF;
1253
1254         if (priv->active_rate_basic & IWL_OFDM_BASIC_RATES_MASK)
1255                 priv->staging_rxon.ofdm_basic_rates =
1256                     ((priv->active_rate_basic &
1257                       (IWL_OFDM_BASIC_RATES_MASK | IWL_RATE_6M_MASK)) >>
1258                       IWL_FIRST_OFDM_RATE) & 0xFF;
1259         else
1260                 priv->staging_rxon.ofdm_basic_rates =
1261                    (IWL_OFDM_BASIC_RATES_MASK >> IWL_FIRST_OFDM_RATE) & 0xFF;
1262 }
1263
1264 void iwl_rx_csa(struct iwl_priv *priv, struct iwl_rx_mem_buffer *rxb)
1265 {
1266         struct iwl_rx_packet *pkt = (struct iwl_rx_packet *)rxb->skb->data;
1267         struct iwl_rxon_cmd *rxon = (void *)&priv->active_rxon;
1268         struct iwl_csa_notification *csa = &(pkt->u.csa_notif);
1269         IWL_DEBUG_11H(priv, "CSA notif: channel %d, status %d\n",
1270                       le16_to_cpu(csa->channel), le32_to_cpu(csa->status));
1271         rxon->channel = csa->channel;
1272         priv->staging_rxon.channel = csa->channel;
1273 }
1274 EXPORT_SYMBOL(iwl_rx_csa);
1275
1276 #ifdef CONFIG_IWLWIFI_DEBUG
1277 static void iwl_print_rx_config_cmd(struct iwl_priv *priv)
1278 {
1279         struct iwl_rxon_cmd *rxon = &priv->staging_rxon;
1280
1281         IWL_DEBUG_RADIO(priv, "RX CONFIG:\n");
1282         iwl_print_hex_dump(priv, IWL_DL_RADIO, (u8 *) rxon, sizeof(*rxon));
1283         IWL_DEBUG_RADIO(priv, "u16 channel: 0x%x\n", le16_to_cpu(rxon->channel));
1284         IWL_DEBUG_RADIO(priv, "u32 flags: 0x%08X\n", le32_to_cpu(rxon->flags));
1285         IWL_DEBUG_RADIO(priv, "u32 filter_flags: 0x%08x\n",
1286                         le32_to_cpu(rxon->filter_flags));
1287         IWL_DEBUG_RADIO(priv, "u8 dev_type: 0x%x\n", rxon->dev_type);
1288         IWL_DEBUG_RADIO(priv, "u8 ofdm_basic_rates: 0x%02x\n",
1289                         rxon->ofdm_basic_rates);
1290         IWL_DEBUG_RADIO(priv, "u8 cck_basic_rates: 0x%02x\n", rxon->cck_basic_rates);
1291         IWL_DEBUG_RADIO(priv, "u8[6] node_addr: %pM\n", rxon->node_addr);
1292         IWL_DEBUG_RADIO(priv, "u8[6] bssid_addr: %pM\n", rxon->bssid_addr);
1293         IWL_DEBUG_RADIO(priv, "u16 assoc_id: 0x%x\n", le16_to_cpu(rxon->assoc_id));
1294 }
1295
1296 static const char *desc_lookup_text[] = {
1297         "OK",
1298         "FAIL",
1299         "BAD_PARAM",
1300         "BAD_CHECKSUM",
1301         "NMI_INTERRUPT_WDG",
1302         "SYSASSERT",
1303         "FATAL_ERROR",
1304         "BAD_COMMAND",
1305         "HW_ERROR_TUNE_LOCK",
1306         "HW_ERROR_TEMPERATURE",
1307         "ILLEGAL_CHAN_FREQ",
1308         "VCC_NOT_STABLE",
1309         "FH_ERROR",
1310         "NMI_INTERRUPT_HOST",
1311         "NMI_INTERRUPT_ACTION_PT",
1312         "NMI_INTERRUPT_UNKNOWN",
1313         "UCODE_VERSION_MISMATCH",
1314         "HW_ERROR_ABS_LOCK",
1315         "HW_ERROR_CAL_LOCK_FAIL",
1316         "NMI_INTERRUPT_INST_ACTION_PT",
1317         "NMI_INTERRUPT_DATA_ACTION_PT",
1318         "NMI_TRM_HW_ER",
1319         "NMI_INTERRUPT_TRM",
1320         "NMI_INTERRUPT_BREAK_POINT"
1321         "DEBUG_0",
1322         "DEBUG_1",
1323         "DEBUG_2",
1324         "DEBUG_3",
1325         "UNKNOWN"
1326 };
1327
1328 static const char *desc_lookup(int i)
1329 {
1330         int max = ARRAY_SIZE(desc_lookup_text) - 1;
1331
1332         if (i < 0 || i > max)
1333                 i = max;
1334
1335         return desc_lookup_text[i];
1336 }
1337
1338 #define ERROR_START_OFFSET  (1 * sizeof(u32))
1339 #define ERROR_ELEM_SIZE     (7 * sizeof(u32))
1340
1341 static void iwl_dump_nic_error_log(struct iwl_priv *priv)
1342 {
1343         u32 data2, line;
1344         u32 desc, time, count, base, data1;
1345         u32 blink1, blink2, ilink1, ilink2;
1346
1347         if (priv->ucode_type == UCODE_INIT)
1348                 base = le32_to_cpu(priv->card_alive_init.error_event_table_ptr);
1349         else
1350                 base = le32_to_cpu(priv->card_alive.error_event_table_ptr);
1351
1352         if (!priv->cfg->ops->lib->is_valid_rtc_data_addr(base)) {
1353                 IWL_ERR(priv, "Not valid error log pointer 0x%08X\n", base);
1354                 return;
1355         }
1356
1357         count = iwl_read_targ_mem(priv, base);
1358
1359         if (ERROR_START_OFFSET <= count * ERROR_ELEM_SIZE) {
1360                 IWL_ERR(priv, "Start IWL Error Log Dump:\n");
1361                 IWL_ERR(priv, "Status: 0x%08lX, count: %d\n",
1362                         priv->status, count);
1363         }
1364
1365         desc = iwl_read_targ_mem(priv, base + 1 * sizeof(u32));
1366         blink1 = iwl_read_targ_mem(priv, base + 3 * sizeof(u32));
1367         blink2 = iwl_read_targ_mem(priv, base + 4 * sizeof(u32));
1368         ilink1 = iwl_read_targ_mem(priv, base + 5 * sizeof(u32));
1369         ilink2 = iwl_read_targ_mem(priv, base + 6 * sizeof(u32));
1370         data1 = iwl_read_targ_mem(priv, base + 7 * sizeof(u32));
1371         data2 = iwl_read_targ_mem(priv, base + 8 * sizeof(u32));
1372         line = iwl_read_targ_mem(priv, base + 9 * sizeof(u32));
1373         time = iwl_read_targ_mem(priv, base + 11 * sizeof(u32));
1374
1375         IWL_ERR(priv, "Desc                               Time       "
1376                 "data1      data2      line\n");
1377         IWL_ERR(priv, "%-28s (#%02d) %010u 0x%08X 0x%08X %u\n",
1378                 desc_lookup(desc), desc, time, data1, data2, line);
1379         IWL_ERR(priv, "blink1  blink2  ilink1  ilink2\n");
1380         IWL_ERR(priv, "0x%05X 0x%05X 0x%05X 0x%05X\n", blink1, blink2,
1381                 ilink1, ilink2);
1382
1383 }
1384
1385 #define EVENT_START_OFFSET  (4 * sizeof(u32))
1386
1387 /**
1388  * iwl_print_event_log - Dump error event log to syslog
1389  *
1390  */
1391 static void iwl_print_event_log(struct iwl_priv *priv, u32 start_idx,
1392                                 u32 num_events, u32 mode)
1393 {
1394         u32 i;
1395         u32 base;       /* SRAM byte address of event log header */
1396         u32 event_size; /* 2 u32s, or 3 u32s if timestamp recorded */
1397         u32 ptr;        /* SRAM byte address of log data */
1398         u32 ev, time, data; /* event log data */
1399
1400         if (num_events == 0)
1401                 return;
1402         if (priv->ucode_type == UCODE_INIT)
1403                 base = le32_to_cpu(priv->card_alive_init.log_event_table_ptr);
1404         else
1405                 base = le32_to_cpu(priv->card_alive.log_event_table_ptr);
1406
1407         if (mode == 0)
1408                 event_size = 2 * sizeof(u32);
1409         else
1410                 event_size = 3 * sizeof(u32);
1411
1412         ptr = base + EVENT_START_OFFSET + (start_idx * event_size);
1413
1414         /* "time" is actually "data" for mode 0 (no timestamp).
1415         * place event id # at far right for easier visual parsing. */
1416         for (i = 0; i < num_events; i++) {
1417                 ev = iwl_read_targ_mem(priv, ptr);
1418                 ptr += sizeof(u32);
1419                 time = iwl_read_targ_mem(priv, ptr);
1420                 ptr += sizeof(u32);
1421                 if (mode == 0) {
1422                         /* data, ev */
1423                         IWL_ERR(priv, "EVT_LOG:0x%08x:%04u\n", time, ev);
1424                 } else {
1425                         data = iwl_read_targ_mem(priv, ptr);
1426                         ptr += sizeof(u32);
1427                         IWL_ERR(priv, "EVT_LOGT:%010u:0x%08x:%04u\n",
1428                                         time, data, ev);
1429                 }
1430         }
1431 }
1432
1433 void iwl_dump_nic_event_log(struct iwl_priv *priv)
1434 {
1435         u32 base;       /* SRAM byte address of event log header */
1436         u32 capacity;   /* event log capacity in # entries */
1437         u32 mode;       /* 0 - no timestamp, 1 - timestamp recorded */
1438         u32 num_wraps;  /* # times uCode wrapped to top of log */
1439         u32 next_entry; /* index of next entry to be written by uCode */
1440         u32 size;       /* # entries that we'll print */
1441
1442         if (priv->ucode_type == UCODE_INIT)
1443                 base = le32_to_cpu(priv->card_alive_init.log_event_table_ptr);
1444         else
1445                 base = le32_to_cpu(priv->card_alive.log_event_table_ptr);
1446
1447         if (!priv->cfg->ops->lib->is_valid_rtc_data_addr(base)) {
1448                 IWL_ERR(priv, "Invalid event log pointer 0x%08X\n", base);
1449                 return;
1450         }
1451
1452         /* event log header */
1453         capacity = iwl_read_targ_mem(priv, base);
1454         mode = iwl_read_targ_mem(priv, base + (1 * sizeof(u32)));
1455         num_wraps = iwl_read_targ_mem(priv, base + (2 * sizeof(u32)));
1456         next_entry = iwl_read_targ_mem(priv, base + (3 * sizeof(u32)));
1457
1458         size = num_wraps ? capacity : next_entry;
1459
1460         /* bail out if nothing in log */
1461         if (size == 0) {
1462                 IWL_ERR(priv, "Start IWL Event Log Dump: nothing in log\n");
1463                 return;
1464         }
1465
1466         IWL_ERR(priv, "Start IWL Event Log Dump: display count %d, wraps %d\n",
1467                         size, num_wraps);
1468
1469         /* if uCode has wrapped back to top of log, start at the oldest entry,
1470          * i.e the next one that uCode would fill. */
1471         if (num_wraps)
1472                 iwl_print_event_log(priv, next_entry,
1473                                         capacity - next_entry, mode);
1474         /* (then/else) start at top of log */
1475         iwl_print_event_log(priv, 0, next_entry, mode);
1476
1477 }
1478 #endif
1479 /**
1480  * iwl_irq_handle_error - called for HW or SW error interrupt from card
1481  */
1482 void iwl_irq_handle_error(struct iwl_priv *priv)
1483 {
1484         /* Set the FW error flag -- cleared on iwl_down */
1485         set_bit(STATUS_FW_ERROR, &priv->status);
1486
1487         /* Cancel currently queued command. */
1488         clear_bit(STATUS_HCMD_ACTIVE, &priv->status);
1489
1490 #ifdef CONFIG_IWLWIFI_DEBUG
1491         if (iwl_get_debug_level(priv) & IWL_DL_FW_ERRORS) {
1492                 iwl_dump_nic_error_log(priv);
1493                 iwl_dump_nic_event_log(priv);
1494                 iwl_print_rx_config_cmd(priv);
1495         }
1496 #endif
1497
1498         wake_up_interruptible(&priv->wait_command_queue);
1499
1500         /* Keep the restart process from trying to send host
1501          * commands by clearing the INIT status bit */
1502         clear_bit(STATUS_READY, &priv->status);
1503
1504         if (!test_bit(STATUS_EXIT_PENDING, &priv->status)) {
1505                 IWL_DEBUG(priv, IWL_DL_FW_ERRORS,
1506                           "Restarting adapter due to uCode error.\n");
1507
1508                 if (priv->cfg->mod_params->restart_fw)
1509                         queue_work(priv->workqueue, &priv->restart);
1510         }
1511 }
1512 EXPORT_SYMBOL(iwl_irq_handle_error);
1513
1514 void iwl_configure_filter(struct ieee80211_hw *hw,
1515                           unsigned int changed_flags,
1516                           unsigned int *total_flags,
1517                           int mc_count, struct dev_addr_list *mc_list)
1518 {
1519         struct iwl_priv *priv = hw->priv;
1520         __le32 *filter_flags = &priv->staging_rxon.filter_flags;
1521
1522         IWL_DEBUG_MAC80211(priv, "Enter: changed: 0x%x, total: 0x%x\n",
1523                         changed_flags, *total_flags);
1524
1525         if (changed_flags & (FIF_OTHER_BSS | FIF_PROMISC_IN_BSS)) {
1526                 if (*total_flags & (FIF_OTHER_BSS | FIF_PROMISC_IN_BSS))
1527                         *filter_flags |= RXON_FILTER_PROMISC_MSK;
1528                 else
1529                         *filter_flags &= ~RXON_FILTER_PROMISC_MSK;
1530         }
1531         if (changed_flags & FIF_ALLMULTI) {
1532                 if (*total_flags & FIF_ALLMULTI)
1533                         *filter_flags |= RXON_FILTER_ACCEPT_GRP_MSK;
1534                 else
1535                         *filter_flags &= ~RXON_FILTER_ACCEPT_GRP_MSK;
1536         }
1537         if (changed_flags & FIF_CONTROL) {
1538                 if (*total_flags & FIF_CONTROL)
1539                         *filter_flags |= RXON_FILTER_CTL2HOST_MSK;
1540                 else
1541                         *filter_flags &= ~RXON_FILTER_CTL2HOST_MSK;
1542         }
1543         if (changed_flags & FIF_BCN_PRBRESP_PROMISC) {
1544                 if (*total_flags & FIF_BCN_PRBRESP_PROMISC)
1545                         *filter_flags |= RXON_FILTER_BCON_AWARE_MSK;
1546                 else
1547                         *filter_flags &= ~RXON_FILTER_BCON_AWARE_MSK;
1548         }
1549
1550         /* We avoid iwl_commit_rxon here to commit the new filter flags
1551          * since mac80211 will call ieee80211_hw_config immediately.
1552          * (mc_list is not supported at this time). Otherwise, we need to
1553          * queue a background iwl_commit_rxon work.
1554          */
1555
1556         *total_flags &= FIF_OTHER_BSS | FIF_ALLMULTI | FIF_PROMISC_IN_BSS |
1557                         FIF_BCN_PRBRESP_PROMISC | FIF_CONTROL;
1558 }
1559 EXPORT_SYMBOL(iwl_configure_filter);
1560
1561 int iwl_setup_mac(struct iwl_priv *priv)
1562 {
1563         int ret;
1564         struct ieee80211_hw *hw = priv->hw;
1565         hw->rate_control_algorithm = "iwl-agn-rs";
1566
1567         /* Tell mac80211 our characteristics */
1568         hw->flags = IEEE80211_HW_SIGNAL_DBM |
1569                     IEEE80211_HW_NOISE_DBM |
1570                     IEEE80211_HW_AMPDU_AGGREGATION |
1571                     IEEE80211_HW_SPECTRUM_MGMT |
1572                     IEEE80211_HW_SUPPORTS_PS |
1573                     IEEE80211_HW_SUPPORTS_DYNAMIC_PS;
1574         hw->wiphy->interface_modes =
1575                 BIT(NL80211_IFTYPE_STATION) |
1576                 BIT(NL80211_IFTYPE_ADHOC);
1577
1578         hw->wiphy->custom_regulatory = true;
1579
1580         /* Firmware does not support this */
1581         hw->wiphy->disable_beacon_hints = true;
1582
1583         hw->wiphy->max_scan_ssids = PROBE_OPTION_MAX;
1584         /* we create the 802.11 header and a zero-length SSID element */
1585         hw->wiphy->max_scan_ie_len = IWL_MAX_PROBE_REQUEST - 24 - 2;
1586
1587         /* Default value; 4 EDCA QOS priorities */
1588         hw->queues = 4;
1589
1590         hw->max_listen_interval = IWL_CONN_MAX_LISTEN_INTERVAL;
1591
1592         if (priv->bands[IEEE80211_BAND_2GHZ].n_channels)
1593                 priv->hw->wiphy->bands[IEEE80211_BAND_2GHZ] =
1594                         &priv->bands[IEEE80211_BAND_2GHZ];
1595         if (priv->bands[IEEE80211_BAND_5GHZ].n_channels)
1596                 priv->hw->wiphy->bands[IEEE80211_BAND_5GHZ] =
1597                         &priv->bands[IEEE80211_BAND_5GHZ];
1598
1599         ret = ieee80211_register_hw(priv->hw);
1600         if (ret) {
1601                 IWL_ERR(priv, "Failed to register hw (error %d)\n", ret);
1602                 return ret;
1603         }
1604         priv->mac80211_registered = 1;
1605
1606         return 0;
1607 }
1608 EXPORT_SYMBOL(iwl_setup_mac);
1609
1610 int iwl_set_hw_params(struct iwl_priv *priv)
1611 {
1612         priv->hw_params.max_rxq_size = RX_QUEUE_SIZE;
1613         priv->hw_params.max_rxq_log = RX_QUEUE_SIZE_LOG;
1614         if (priv->cfg->mod_params->amsdu_size_8K)
1615                 priv->hw_params.rx_buf_size = IWL_RX_BUF_SIZE_8K;
1616         else
1617                 priv->hw_params.rx_buf_size = IWL_RX_BUF_SIZE_4K;
1618         priv->hw_params.max_pkt_size = priv->hw_params.rx_buf_size - 256;
1619
1620         priv->hw_params.max_beacon_itrvl = IWL_MAX_UCODE_BEACON_INTERVAL;
1621
1622         if (priv->cfg->mod_params->disable_11n)
1623                 priv->cfg->sku &= ~IWL_SKU_N;
1624
1625         /* Device-specific setup */
1626         return priv->cfg->ops->lib->set_hw_params(priv);
1627 }
1628 EXPORT_SYMBOL(iwl_set_hw_params);
1629
1630 int iwl_init_drv(struct iwl_priv *priv)
1631 {
1632         int ret;
1633
1634         priv->ibss_beacon = NULL;
1635
1636         spin_lock_init(&priv->lock);
1637         spin_lock_init(&priv->sta_lock);
1638         spin_lock_init(&priv->hcmd_lock);
1639
1640         INIT_LIST_HEAD(&priv->free_frames);
1641
1642         mutex_init(&priv->mutex);
1643
1644         /* Clear the driver's (not device's) station table */
1645         iwl_clear_stations_table(priv);
1646
1647         priv->data_retry_limit = -1;
1648         priv->ieee_channels = NULL;
1649         priv->ieee_rates = NULL;
1650         priv->band = IEEE80211_BAND_2GHZ;
1651
1652         priv->iw_mode = NL80211_IFTYPE_STATION;
1653
1654         priv->current_ht_config.sm_ps = WLAN_HT_CAP_SM_PS_DISABLED;
1655
1656         /* Choose which receivers/antennas to use */
1657         if (priv->cfg->ops->hcmd->set_rxon_chain)
1658                 priv->cfg->ops->hcmd->set_rxon_chain(priv);
1659
1660         iwl_init_scan_params(priv);
1661
1662         iwl_reset_qos(priv);
1663
1664         priv->qos_data.qos_active = 0;
1665         priv->qos_data.qos_cap.val = 0;
1666
1667         priv->rates_mask = IWL_RATES_MASK;
1668         priv->tx_power_user_lmt = IWL_TX_POWER_TARGET_POWER_MAX;
1669
1670         ret = iwl_init_channel_map(priv);
1671         if (ret) {
1672                 IWL_ERR(priv, "initializing regulatory failed: %d\n", ret);
1673                 goto err;
1674         }
1675
1676         ret = iwlcore_init_geos(priv);
1677         if (ret) {
1678                 IWL_ERR(priv, "initializing geos failed: %d\n", ret);
1679                 goto err_free_channel_map;
1680         }
1681         iwlcore_init_hw_rates(priv, priv->ieee_rates);
1682
1683         return 0;
1684
1685 err_free_channel_map:
1686         iwl_free_channel_map(priv);
1687 err:
1688         return ret;
1689 }
1690 EXPORT_SYMBOL(iwl_init_drv);
1691
1692 int iwl_set_tx_power(struct iwl_priv *priv, s8 tx_power, bool force)
1693 {
1694         int ret = 0;
1695         if (tx_power < IWL_TX_POWER_TARGET_POWER_MIN) {
1696                 IWL_WARN(priv, "Requested user TXPOWER %d below lower limit %d.\n",
1697                          tx_power,
1698                          IWL_TX_POWER_TARGET_POWER_MIN);
1699                 return -EINVAL;
1700         }
1701
1702         if (tx_power > IWL_TX_POWER_TARGET_POWER_MAX) {
1703                 IWL_WARN(priv, "Requested user TXPOWER %d above upper limit %d.\n",
1704                          tx_power,
1705                          IWL_TX_POWER_TARGET_POWER_MAX);
1706                 return -EINVAL;
1707         }
1708
1709         if (priv->tx_power_user_lmt != tx_power)
1710                 force = true;
1711
1712         priv->tx_power_user_lmt = tx_power;
1713
1714         /* if nic is not up don't send command */
1715         if (!iwl_is_ready_rf(priv))
1716                 return ret;
1717
1718         if (force && priv->cfg->ops->lib->send_tx_power)
1719                 ret = priv->cfg->ops->lib->send_tx_power(priv);
1720
1721         return ret;
1722 }
1723 EXPORT_SYMBOL(iwl_set_tx_power);
1724
1725 void iwl_uninit_drv(struct iwl_priv *priv)
1726 {
1727         iwl_calib_free_results(priv);
1728         iwlcore_free_geos(priv);
1729         iwl_free_channel_map(priv);
1730         kfree(priv->scan);
1731 }
1732 EXPORT_SYMBOL(iwl_uninit_drv);
1733
1734 #define ICT_COUNT (PAGE_SIZE/sizeof(u32))
1735
1736 /* Free dram table */
1737 void iwl_free_isr_ict(struct iwl_priv *priv)
1738 {
1739         if (priv->ict_tbl_vir) {
1740                 pci_free_consistent(priv->pci_dev, (sizeof(u32) * ICT_COUNT) +
1741                                         PAGE_SIZE, priv->ict_tbl_vir,
1742                                         priv->ict_tbl_dma);
1743                 priv->ict_tbl_vir = NULL;
1744         }
1745 }
1746 EXPORT_SYMBOL(iwl_free_isr_ict);
1747
1748
1749 /* allocate dram shared table it is a PAGE_SIZE aligned
1750  * also reset all data related to ICT table interrupt.
1751  */
1752 int iwl_alloc_isr_ict(struct iwl_priv *priv)
1753 {
1754
1755         if (priv->cfg->use_isr_legacy)
1756                 return 0;
1757         /* allocate shrared data table */
1758         priv->ict_tbl_vir = pci_alloc_consistent(priv->pci_dev, (sizeof(u32) *
1759                                                   ICT_COUNT) + PAGE_SIZE,
1760                                                   &priv->ict_tbl_dma);
1761         if (!priv->ict_tbl_vir)
1762                 return -ENOMEM;
1763
1764         /* align table to PAGE_SIZE boundry */
1765         priv->aligned_ict_tbl_dma = ALIGN(priv->ict_tbl_dma, PAGE_SIZE);
1766
1767         IWL_DEBUG_ISR(priv, "ict dma addr %Lx dma aligned %Lx diff %d\n",
1768                              (unsigned long long)priv->ict_tbl_dma,
1769                              (unsigned long long)priv->aligned_ict_tbl_dma,
1770                         (int)(priv->aligned_ict_tbl_dma - priv->ict_tbl_dma));
1771
1772         priv->ict_tbl =  priv->ict_tbl_vir +
1773                           (priv->aligned_ict_tbl_dma - priv->ict_tbl_dma);
1774
1775         IWL_DEBUG_ISR(priv, "ict vir addr %p vir aligned %p diff %d\n",
1776                              priv->ict_tbl, priv->ict_tbl_vir,
1777                         (int)(priv->aligned_ict_tbl_dma - priv->ict_tbl_dma));
1778
1779         /* reset table and index to all 0 */
1780         memset(priv->ict_tbl_vir,0, (sizeof(u32) * ICT_COUNT) + PAGE_SIZE);
1781         priv->ict_index = 0;
1782
1783         /* add periodic RX interrupt */
1784         priv->inta_mask |= CSR_INT_BIT_RX_PERIODIC;
1785         return 0;
1786 }
1787 EXPORT_SYMBOL(iwl_alloc_isr_ict);
1788
1789 /* Device is going up inform it about using ICT interrupt table,
1790  * also we need to tell the driver to start using ICT interrupt.
1791  */
1792 int iwl_reset_ict(struct iwl_priv *priv)
1793 {
1794         u32 val;
1795         unsigned long flags;
1796
1797         if (!priv->ict_tbl_vir)
1798                 return 0;
1799
1800         spin_lock_irqsave(&priv->lock, flags);
1801         iwl_disable_interrupts(priv);
1802
1803         memset(&priv->ict_tbl[0],0, sizeof(u32) * ICT_COUNT);
1804
1805         val = priv->aligned_ict_tbl_dma >> PAGE_SHIFT;
1806
1807         val |= CSR_DRAM_INT_TBL_ENABLE;
1808         val |= CSR_DRAM_INIT_TBL_WRAP_CHECK;
1809
1810         IWL_DEBUG_ISR(priv, "CSR_DRAM_INT_TBL_REG =0x%X "
1811                         "aligned dma address %Lx\n",
1812                         val, (unsigned long long)priv->aligned_ict_tbl_dma);
1813
1814         iwl_write32(priv, CSR_DRAM_INT_TBL_REG, val);
1815         priv->use_ict = true;
1816         priv->ict_index = 0;
1817         iwl_write32(priv, CSR_INT, priv->inta_mask);
1818         iwl_enable_interrupts(priv);
1819         spin_unlock_irqrestore(&priv->lock, flags);
1820
1821         return 0;
1822 }
1823 EXPORT_SYMBOL(iwl_reset_ict);
1824
1825 /* Device is going down disable ict interrupt usage */
1826 void iwl_disable_ict(struct iwl_priv *priv)
1827 {
1828         unsigned long flags;
1829
1830         spin_lock_irqsave(&priv->lock, flags);
1831         priv->use_ict = false;
1832         spin_unlock_irqrestore(&priv->lock, flags);
1833 }
1834 EXPORT_SYMBOL(iwl_disable_ict);
1835
1836 /* interrupt handler using ict table, with this interrupt driver will
1837  * stop using INTA register to get device's interrupt, reading this register
1838  * is expensive, device will write interrupts in ICT dram table, increment
1839  * index then will fire interrupt to driver, driver will OR all ICT table
1840  * entries from current index up to table entry with 0 value. the result is
1841  * the interrupt we need to service, driver will set the entries back to 0 and
1842  * set index.
1843  */
1844 irqreturn_t iwl_isr_ict(int irq, void *data)
1845 {
1846         struct iwl_priv *priv = data;
1847         u32 inta, inta_mask;
1848         u32 val = 0;
1849
1850         if (!priv)
1851                 return IRQ_NONE;
1852
1853         /* dram interrupt table not set yet,
1854          * use legacy interrupt.
1855          */
1856         if (!priv->use_ict)
1857                 return iwl_isr(irq, data);
1858
1859         spin_lock(&priv->lock);
1860
1861         /* Disable (but don't clear!) interrupts here to avoid
1862          * back-to-back ISRs and sporadic interrupts from our NIC.
1863          * If we have something to service, the tasklet will re-enable ints.
1864          * If we *don't* have something, we'll re-enable before leaving here.
1865          */
1866         inta_mask = iwl_read32(priv, CSR_INT_MASK);  /* just for debug */
1867         iwl_write32(priv, CSR_INT_MASK, 0x00000000);
1868
1869
1870         /* Ignore interrupt if there's nothing in NIC to service.
1871          * This may be due to IRQ shared with another device,
1872          * or due to sporadic interrupts thrown from our NIC. */
1873         if (!priv->ict_tbl[priv->ict_index]) {
1874                 IWL_DEBUG_ISR(priv, "Ignore interrupt, inta == 0\n");
1875                 goto none;
1876         }
1877
1878         /* read all entries that not 0 start with ict_index */
1879         while (priv->ict_tbl[priv->ict_index]) {
1880
1881                 val |= priv->ict_tbl[priv->ict_index];
1882                 IWL_DEBUG_ISR(priv, "ICT index %d value 0x%08X\n",
1883                                         priv->ict_index,
1884                                         priv->ict_tbl[priv->ict_index]);
1885                 priv->ict_tbl[priv->ict_index] = 0;
1886                 priv->ict_index = iwl_queue_inc_wrap(priv->ict_index,
1887                                                                 ICT_COUNT);
1888
1889         }
1890
1891         /* We should not get this value, just ignore it. */
1892         if (val == 0xffffffff)
1893                 val = 0;
1894
1895         inta = (0xff & val) | ((0xff00 & val) << 16);
1896         IWL_DEBUG_ISR(priv, "ISR inta 0x%08x, enabled 0x%08x ict 0x%08x\n",
1897                         inta, inta_mask, val);
1898
1899         inta &= priv->inta_mask;
1900         priv->inta |= inta;
1901
1902         /* iwl_irq_tasklet() will service interrupts and re-enable them */
1903         if (likely(inta))
1904                 tasklet_schedule(&priv->irq_tasklet);
1905         else if (test_bit(STATUS_INT_ENABLED, &priv->status) && !priv->inta) {
1906                 /* Allow interrupt if was disabled by this handler and
1907                  * no tasklet was schedules, We should not enable interrupt,
1908                  * tasklet will enable it.
1909                  */
1910                 iwl_enable_interrupts(priv);
1911         }
1912
1913         spin_unlock(&priv->lock);
1914         return IRQ_HANDLED;
1915
1916  none:
1917         /* re-enable interrupts here since we don't have anything to service.
1918          * only Re-enable if disabled by irq.
1919          */
1920         if (test_bit(STATUS_INT_ENABLED, &priv->status) && !priv->inta)
1921                 iwl_enable_interrupts(priv);
1922
1923         spin_unlock(&priv->lock);
1924         return IRQ_NONE;
1925 }
1926 EXPORT_SYMBOL(iwl_isr_ict);
1927
1928
1929 static irqreturn_t iwl_isr(int irq, void *data)
1930 {
1931         struct iwl_priv *priv = data;
1932         u32 inta, inta_mask;
1933 #ifdef CONFIG_IWLWIFI_DEBUG
1934         u32 inta_fh;
1935 #endif
1936         if (!priv)
1937                 return IRQ_NONE;
1938
1939         spin_lock(&priv->lock);
1940
1941         /* Disable (but don't clear!) interrupts here to avoid
1942          *    back-to-back ISRs and sporadic interrupts from our NIC.
1943          * If we have something to service, the tasklet will re-enable ints.
1944          * If we *don't* have something, we'll re-enable before leaving here. */
1945         inta_mask = iwl_read32(priv, CSR_INT_MASK);  /* just for debug */
1946         iwl_write32(priv, CSR_INT_MASK, 0x00000000);
1947
1948         /* Discover which interrupts are active/pending */
1949         inta = iwl_read32(priv, CSR_INT);
1950
1951         /* Ignore interrupt if there's nothing in NIC to service.
1952          * This may be due to IRQ shared with another device,
1953          * or due to sporadic interrupts thrown from our NIC. */
1954         if (!inta) {
1955                 IWL_DEBUG_ISR(priv, "Ignore interrupt, inta == 0\n");
1956                 goto none;
1957         }
1958
1959         if ((inta == 0xFFFFFFFF) || ((inta & 0xFFFFFFF0) == 0xa5a5a5a0)) {
1960                 /* Hardware disappeared. It might have already raised
1961                  * an interrupt */
1962                 IWL_WARN(priv, "HARDWARE GONE?? INTA == 0x%08x\n", inta);
1963                 goto unplugged;
1964         }
1965
1966 #ifdef CONFIG_IWLWIFI_DEBUG
1967         if (iwl_get_debug_level(priv) & (IWL_DL_ISR)) {
1968                 inta_fh = iwl_read32(priv, CSR_FH_INT_STATUS);
1969                 IWL_DEBUG_ISR(priv, "ISR inta 0x%08x, enabled 0x%08x, "
1970                               "fh 0x%08x\n", inta, inta_mask, inta_fh);
1971         }
1972 #endif
1973
1974         priv->inta |= inta;
1975         /* iwl_irq_tasklet() will service interrupts and re-enable them */
1976         if (likely(inta))
1977                 tasklet_schedule(&priv->irq_tasklet);
1978         else if (test_bit(STATUS_INT_ENABLED, &priv->status) && !priv->inta)
1979                 iwl_enable_interrupts(priv);
1980
1981  unplugged:
1982         spin_unlock(&priv->lock);
1983         return IRQ_HANDLED;
1984
1985  none:
1986         /* re-enable interrupts here since we don't have anything to service. */
1987         /* only Re-enable if diabled by irq  and no schedules tasklet. */
1988         if (test_bit(STATUS_INT_ENABLED, &priv->status) && !priv->inta)
1989                 iwl_enable_interrupts(priv);
1990
1991         spin_unlock(&priv->lock);
1992         return IRQ_NONE;
1993 }
1994
1995 irqreturn_t iwl_isr_legacy(int irq, void *data)
1996 {
1997         struct iwl_priv *priv = data;
1998         u32 inta, inta_mask;
1999         u32 inta_fh;
2000         if (!priv)
2001                 return IRQ_NONE;
2002
2003         spin_lock(&priv->lock);
2004
2005         /* Disable (but don't clear!) interrupts here to avoid
2006          *    back-to-back ISRs and sporadic interrupts from our NIC.
2007          * If we have something to service, the tasklet will re-enable ints.
2008          * If we *don't* have something, we'll re-enable before leaving here. */
2009         inta_mask = iwl_read32(priv, CSR_INT_MASK);  /* just for debug */
2010         iwl_write32(priv, CSR_INT_MASK, 0x00000000);
2011
2012         /* Discover which interrupts are active/pending */
2013         inta = iwl_read32(priv, CSR_INT);
2014         inta_fh = iwl_read32(priv, CSR_FH_INT_STATUS);
2015
2016         /* Ignore interrupt if there's nothing in NIC to service.
2017          * This may be due to IRQ shared with another device,
2018          * or due to sporadic interrupts thrown from our NIC. */
2019         if (!inta && !inta_fh) {
2020                 IWL_DEBUG_ISR(priv, "Ignore interrupt, inta == 0, inta_fh == 0\n");
2021                 goto none;
2022         }
2023
2024         if ((inta == 0xFFFFFFFF) || ((inta & 0xFFFFFFF0) == 0xa5a5a5a0)) {
2025                 /* Hardware disappeared. It might have already raised
2026                  * an interrupt */
2027                 IWL_WARN(priv, "HARDWARE GONE?? INTA == 0x%08x\n", inta);
2028                 goto unplugged;
2029         }
2030
2031         IWL_DEBUG_ISR(priv, "ISR inta 0x%08x, enabled 0x%08x, fh 0x%08x\n",
2032                       inta, inta_mask, inta_fh);
2033
2034         inta &= ~CSR_INT_BIT_SCD;
2035
2036         /* iwl_irq_tasklet() will service interrupts and re-enable them */
2037         if (likely(inta || inta_fh))
2038                 tasklet_schedule(&priv->irq_tasklet);
2039
2040  unplugged:
2041         spin_unlock(&priv->lock);
2042         return IRQ_HANDLED;
2043
2044  none:
2045         /* re-enable interrupts here since we don't have anything to service. */
2046         /* only Re-enable if diabled by irq */
2047         if (test_bit(STATUS_INT_ENABLED, &priv->status))
2048                 iwl_enable_interrupts(priv);
2049         spin_unlock(&priv->lock);
2050         return IRQ_NONE;
2051 }
2052 EXPORT_SYMBOL(iwl_isr_legacy);
2053
2054 int iwl_send_bt_config(struct iwl_priv *priv)
2055 {
2056         struct iwl_bt_cmd bt_cmd = {
2057                 .flags = 3,
2058                 .lead_time = 0xAA,
2059                 .max_kill = 1,
2060                 .kill_ack_mask = 0,
2061                 .kill_cts_mask = 0,
2062         };
2063
2064         return iwl_send_cmd_pdu(priv, REPLY_BT_CONFIG,
2065                                 sizeof(struct iwl_bt_cmd), &bt_cmd);
2066 }
2067 EXPORT_SYMBOL(iwl_send_bt_config);
2068
2069 int iwl_send_statistics_request(struct iwl_priv *priv, u8 flags)
2070 {
2071         u32 stat_flags = 0;
2072         struct iwl_host_cmd cmd = {
2073                 .id = REPLY_STATISTICS_CMD,
2074                 .flags = flags,
2075                 .len = sizeof(stat_flags),
2076                 .data = (u8 *) &stat_flags,
2077         };
2078         return iwl_send_cmd(priv, &cmd);
2079 }
2080 EXPORT_SYMBOL(iwl_send_statistics_request);
2081
2082 /**
2083  * iwl_verify_inst_sparse - verify runtime uCode image in card vs. host,
2084  *   using sample data 100 bytes apart.  If these sample points are good,
2085  *   it's a pretty good bet that everything between them is good, too.
2086  */
2087 static int iwlcore_verify_inst_sparse(struct iwl_priv *priv, __le32 *image, u32 len)
2088 {
2089         u32 val;
2090         int ret = 0;
2091         u32 errcnt = 0;
2092         u32 i;
2093
2094         IWL_DEBUG_INFO(priv, "ucode inst image size is %u\n", len);
2095
2096         for (i = 0; i < len; i += 100, image += 100/sizeof(u32)) {
2097                 /* read data comes through single port, auto-incr addr */
2098                 /* NOTE: Use the debugless read so we don't flood kernel log
2099                  * if IWL_DL_IO is set */
2100                 iwl_write_direct32(priv, HBUS_TARG_MEM_RADDR,
2101                         i + IWL49_RTC_INST_LOWER_BOUND);
2102                 val = _iwl_read_direct32(priv, HBUS_TARG_MEM_RDAT);
2103                 if (val != le32_to_cpu(*image)) {
2104                         ret = -EIO;
2105                         errcnt++;
2106                         if (errcnt >= 3)
2107                                 break;
2108                 }
2109         }
2110
2111         return ret;
2112 }
2113
2114 /**
2115  * iwlcore_verify_inst_full - verify runtime uCode image in card vs. host,
2116  *     looking at all data.
2117  */
2118 static int iwl_verify_inst_full(struct iwl_priv *priv, __le32 *image,
2119                                  u32 len)
2120 {
2121         u32 val;
2122         u32 save_len = len;
2123         int ret = 0;
2124         u32 errcnt;
2125
2126         IWL_DEBUG_INFO(priv, "ucode inst image size is %u\n", len);
2127
2128         iwl_write_direct32(priv, HBUS_TARG_MEM_RADDR,
2129                            IWL49_RTC_INST_LOWER_BOUND);
2130
2131         errcnt = 0;
2132         for (; len > 0; len -= sizeof(u32), image++) {
2133                 /* read data comes through single port, auto-incr addr */
2134                 /* NOTE: Use the debugless read so we don't flood kernel log
2135                  * if IWL_DL_IO is set */
2136                 val = _iwl_read_direct32(priv, HBUS_TARG_MEM_RDAT);
2137                 if (val != le32_to_cpu(*image)) {
2138                         IWL_ERR(priv, "uCode INST section is invalid at "
2139                                   "offset 0x%x, is 0x%x, s/b 0x%x\n",
2140                                   save_len - len, val, le32_to_cpu(*image));
2141                         ret = -EIO;
2142                         errcnt++;
2143                         if (errcnt >= 20)
2144                                 break;
2145                 }
2146         }
2147
2148         if (!errcnt)
2149                 IWL_DEBUG_INFO(priv,
2150                     "ucode image in INSTRUCTION memory is good\n");
2151
2152         return ret;
2153 }
2154
2155 /**
2156  * iwl_verify_ucode - determine which instruction image is in SRAM,
2157  *    and verify its contents
2158  */
2159 int iwl_verify_ucode(struct iwl_priv *priv)
2160 {
2161         __le32 *image;
2162         u32 len;
2163         int ret;
2164
2165         /* Try bootstrap */
2166         image = (__le32 *)priv->ucode_boot.v_addr;
2167         len = priv->ucode_boot.len;
2168         ret = iwlcore_verify_inst_sparse(priv, image, len);
2169         if (!ret) {
2170                 IWL_DEBUG_INFO(priv, "Bootstrap uCode is good in inst SRAM\n");
2171                 return 0;
2172         }
2173
2174         /* Try initialize */
2175         image = (__le32 *)priv->ucode_init.v_addr;
2176         len = priv->ucode_init.len;
2177         ret = iwlcore_verify_inst_sparse(priv, image, len);
2178         if (!ret) {
2179                 IWL_DEBUG_INFO(priv, "Initialize uCode is good in inst SRAM\n");
2180                 return 0;
2181         }
2182
2183         /* Try runtime/protocol */
2184         image = (__le32 *)priv->ucode_code.v_addr;
2185         len = priv->ucode_code.len;
2186         ret = iwlcore_verify_inst_sparse(priv, image, len);
2187         if (!ret) {
2188                 IWL_DEBUG_INFO(priv, "Runtime uCode is good in inst SRAM\n");
2189                 return 0;
2190         }
2191
2192         IWL_ERR(priv, "NO VALID UCODE IMAGE IN INSTRUCTION SRAM!!\n");
2193
2194         /* Since nothing seems to match, show first several data entries in
2195          * instruction SRAM, so maybe visual inspection will give a clue.
2196          * Selection of bootstrap image (vs. other images) is arbitrary. */
2197         image = (__le32 *)priv->ucode_boot.v_addr;
2198         len = priv->ucode_boot.len;
2199         ret = iwl_verify_inst_full(priv, image, len);
2200
2201         return ret;
2202 }
2203 EXPORT_SYMBOL(iwl_verify_ucode);
2204
2205
2206 void iwl_rf_kill_ct_config(struct iwl_priv *priv)
2207 {
2208         struct iwl_ct_kill_config cmd;
2209         struct iwl_ct_kill_throttling_config adv_cmd;
2210         unsigned long flags;
2211         int ret = 0;
2212
2213         spin_lock_irqsave(&priv->lock, flags);
2214         iwl_write32(priv, CSR_UCODE_DRV_GP1_CLR,
2215                     CSR_UCODE_DRV_GP1_REG_BIT_CT_KILL_EXIT);
2216         spin_unlock_irqrestore(&priv->lock, flags);
2217         priv->thermal_throttle.ct_kill_toggle = false;
2218
2219         switch (priv->hw_rev & CSR_HW_REV_TYPE_MSK) {
2220         case CSR_HW_REV_TYPE_1000:
2221         case CSR_HW_REV_TYPE_6x00:
2222         case CSR_HW_REV_TYPE_6x50:
2223                 adv_cmd.critical_temperature_enter =
2224                         cpu_to_le32(priv->hw_params.ct_kill_threshold);
2225                 adv_cmd.critical_temperature_exit =
2226                         cpu_to_le32(priv->hw_params.ct_kill_exit_threshold);
2227
2228                 ret = iwl_send_cmd_pdu(priv, REPLY_CT_KILL_CONFIG_CMD,
2229                                        sizeof(adv_cmd), &adv_cmd);
2230                 if (ret)
2231                         IWL_ERR(priv, "REPLY_CT_KILL_CONFIG_CMD failed\n");
2232                 else
2233                         IWL_DEBUG_INFO(priv, "REPLY_CT_KILL_CONFIG_CMD "
2234                                         "succeeded, "
2235                                         "critical temperature enter is %d,"
2236                                         "exit is %d\n",
2237                                        priv->hw_params.ct_kill_threshold,
2238                                        priv->hw_params.ct_kill_exit_threshold);
2239                 break;
2240         default:
2241                 cmd.critical_temperature_R =
2242                         cpu_to_le32(priv->hw_params.ct_kill_threshold);
2243
2244                 ret = iwl_send_cmd_pdu(priv, REPLY_CT_KILL_CONFIG_CMD,
2245                                        sizeof(cmd), &cmd);
2246                 if (ret)
2247                         IWL_ERR(priv, "REPLY_CT_KILL_CONFIG_CMD failed\n");
2248                 else
2249                         IWL_DEBUG_INFO(priv, "REPLY_CT_KILL_CONFIG_CMD "
2250                                         "succeeded, "
2251                                         "critical temperature is %d\n",
2252                                         priv->hw_params.ct_kill_threshold);
2253                 break;
2254         }
2255 }
2256 EXPORT_SYMBOL(iwl_rf_kill_ct_config);
2257
2258
2259 /*
2260  * CARD_STATE_CMD
2261  *
2262  * Use: Sets the device's internal card state to enable, disable, or halt
2263  *
2264  * When in the 'enable' state the card operates as normal.
2265  * When in the 'disable' state, the card enters into a low power mode.
2266  * When in the 'halt' state, the card is shut down and must be fully
2267  * restarted to come back on.
2268  */
2269 int iwl_send_card_state(struct iwl_priv *priv, u32 flags, u8 meta_flag)
2270 {
2271         struct iwl_host_cmd cmd = {
2272                 .id = REPLY_CARD_STATE_CMD,
2273                 .len = sizeof(u32),
2274                 .data = &flags,
2275                 .flags = meta_flag,
2276         };
2277
2278         return iwl_send_cmd(priv, &cmd);
2279 }
2280
2281 void iwl_rx_pm_sleep_notif(struct iwl_priv *priv,
2282                            struct iwl_rx_mem_buffer *rxb)
2283 {
2284 #ifdef CONFIG_IWLWIFI_DEBUG
2285         struct iwl_rx_packet *pkt = (struct iwl_rx_packet *)rxb->skb->data;
2286         struct iwl_sleep_notification *sleep = &(pkt->u.sleep_notif);
2287         IWL_DEBUG_RX(priv, "sleep mode: %d, src: %d\n",
2288                      sleep->pm_sleep_mode, sleep->pm_wakeup_src);
2289 #endif
2290 }
2291 EXPORT_SYMBOL(iwl_rx_pm_sleep_notif);
2292
2293 void iwl_rx_pm_debug_statistics_notif(struct iwl_priv *priv,
2294                                       struct iwl_rx_mem_buffer *rxb)
2295 {
2296         struct iwl_rx_packet *pkt = (struct iwl_rx_packet *)rxb->skb->data;
2297         IWL_DEBUG_RADIO(priv, "Dumping %d bytes of unhandled "
2298                         "notification for %s:\n",
2299                         le32_to_cpu(pkt->len), get_cmd_string(pkt->hdr.cmd));
2300         iwl_print_hex_dump(priv, IWL_DL_RADIO, pkt->u.raw, le32_to_cpu(pkt->len));
2301 }
2302 EXPORT_SYMBOL(iwl_rx_pm_debug_statistics_notif);
2303
2304 void iwl_rx_reply_error(struct iwl_priv *priv,
2305                         struct iwl_rx_mem_buffer *rxb)
2306 {
2307         struct iwl_rx_packet *pkt = (struct iwl_rx_packet *)rxb->skb->data;
2308
2309         IWL_ERR(priv, "Error Reply type 0x%08X cmd %s (0x%02X) "
2310                 "seq 0x%04X ser 0x%08X\n",
2311                 le32_to_cpu(pkt->u.err_resp.error_type),
2312                 get_cmd_string(pkt->u.err_resp.cmd_id),
2313                 pkt->u.err_resp.cmd_id,
2314                 le16_to_cpu(pkt->u.err_resp.bad_cmd_seq_num),
2315                 le32_to_cpu(pkt->u.err_resp.error_info));
2316 }
2317 EXPORT_SYMBOL(iwl_rx_reply_error);
2318
2319 void iwl_clear_isr_stats(struct iwl_priv *priv)
2320 {
2321         memset(&priv->isr_stats, 0, sizeof(priv->isr_stats));
2322 }
2323
2324 int iwl_mac_conf_tx(struct ieee80211_hw *hw, u16 queue,
2325                            const struct ieee80211_tx_queue_params *params)
2326 {
2327         struct iwl_priv *priv = hw->priv;
2328         unsigned long flags;
2329         int q;
2330
2331         IWL_DEBUG_MAC80211(priv, "enter\n");
2332
2333         if (!iwl_is_ready_rf(priv)) {
2334                 IWL_DEBUG_MAC80211(priv, "leave - RF not ready\n");
2335                 return -EIO;
2336         }
2337
2338         if (queue >= AC_NUM) {
2339                 IWL_DEBUG_MAC80211(priv, "leave - queue >= AC_NUM %d\n", queue);
2340                 return 0;
2341         }
2342
2343         q = AC_NUM - 1 - queue;
2344
2345         spin_lock_irqsave(&priv->lock, flags);
2346
2347         priv->qos_data.def_qos_parm.ac[q].cw_min = cpu_to_le16(params->cw_min);
2348         priv->qos_data.def_qos_parm.ac[q].cw_max = cpu_to_le16(params->cw_max);
2349         priv->qos_data.def_qos_parm.ac[q].aifsn = params->aifs;
2350         priv->qos_data.def_qos_parm.ac[q].edca_txop =
2351                         cpu_to_le16((params->txop * 32));
2352
2353         priv->qos_data.def_qos_parm.ac[q].reserved1 = 0;
2354         priv->qos_data.qos_active = 1;
2355
2356         if (priv->iw_mode == NL80211_IFTYPE_AP)
2357                 iwl_activate_qos(priv, 1);
2358         else if (priv->assoc_id && iwl_is_associated(priv))
2359                 iwl_activate_qos(priv, 0);
2360
2361         spin_unlock_irqrestore(&priv->lock, flags);
2362
2363         IWL_DEBUG_MAC80211(priv, "leave\n");
2364         return 0;
2365 }
2366 EXPORT_SYMBOL(iwl_mac_conf_tx);
2367
2368 static void iwl_ht_conf(struct iwl_priv *priv,
2369                             struct ieee80211_bss_conf *bss_conf)
2370 {
2371         struct ieee80211_sta_ht_cap *ht_conf;
2372         struct iwl_ht_info *iwl_conf = &priv->current_ht_config;
2373         struct ieee80211_sta *sta;
2374
2375         IWL_DEBUG_MAC80211(priv, "enter: \n");
2376
2377         if (!iwl_conf->is_ht)
2378                 return;
2379
2380
2381         /*
2382          * It is totally wrong to base global information on something
2383          * that is valid only when associated, alas, this driver works
2384          * that way and I don't know how to fix it.
2385          */
2386
2387         rcu_read_lock();
2388         sta = ieee80211_find_sta(priv->hw, priv->bssid);
2389         if (!sta) {
2390                 rcu_read_unlock();
2391                 return;
2392         }
2393         ht_conf = &sta->ht_cap;
2394
2395         iwl_conf->sm_ps = (u8)((ht_conf->cap & IEEE80211_HT_CAP_SM_PS) >> 2);
2396
2397         memcpy(&iwl_conf->mcs, &ht_conf->mcs, 16);
2398
2399         iwl_conf->ht_protection =
2400                 bss_conf->ht_operation_mode & IEEE80211_HT_OP_MODE_PROTECTION;
2401         iwl_conf->non_GF_STA_present =
2402                 !!(bss_conf->ht_operation_mode & IEEE80211_HT_OP_MODE_NON_GF_STA_PRSNT);
2403
2404         rcu_read_unlock();
2405
2406         IWL_DEBUG_MAC80211(priv, "leave\n");
2407 }
2408
2409 #define IWL_DELAY_NEXT_SCAN_AFTER_ASSOC (HZ*6)
2410 void iwl_bss_info_changed(struct ieee80211_hw *hw,
2411                           struct ieee80211_vif *vif,
2412                           struct ieee80211_bss_conf *bss_conf,
2413                           u32 changes)
2414 {
2415         struct iwl_priv *priv = hw->priv;
2416         int ret;
2417
2418         IWL_DEBUG_MAC80211(priv, "changes = 0x%X\n", changes);
2419
2420         if (!iwl_is_alive(priv))
2421                 return;
2422
2423         mutex_lock(&priv->mutex);
2424
2425         if (changes & BSS_CHANGED_BEACON &&
2426             priv->iw_mode == NL80211_IFTYPE_AP) {
2427                 dev_kfree_skb(priv->ibss_beacon);
2428                 priv->ibss_beacon = ieee80211_beacon_get(hw, vif);
2429         }
2430
2431         if (changes & BSS_CHANGED_BEACON_INT) {
2432                 priv->beacon_int = bss_conf->beacon_int;
2433                 /* TODO: in AP mode, do something to make this take effect */
2434         }
2435
2436         if (changes & BSS_CHANGED_BSSID) {
2437                 IWL_DEBUG_MAC80211(priv, "BSSID %pM\n", bss_conf->bssid);
2438
2439                 /*
2440                  * If there is currently a HW scan going on in the
2441                  * background then we need to cancel it else the RXON
2442                  * below/in post_associate will fail.
2443                  */
2444                 if (iwl_scan_cancel_timeout(priv, 100)) {
2445                         IWL_WARN(priv, "Aborted scan still in progress after 100ms\n");
2446                         IWL_DEBUG_MAC80211(priv, "leaving - scan abort failed.\n");
2447                         mutex_unlock(&priv->mutex);
2448                         return;
2449                 }
2450
2451                 /* mac80211 only sets assoc when in STATION mode */
2452                 if (priv->iw_mode == NL80211_IFTYPE_ADHOC ||
2453                     bss_conf->assoc) {
2454                         memcpy(priv->staging_rxon.bssid_addr,
2455                                bss_conf->bssid, ETH_ALEN);
2456
2457                         /* currently needed in a few places */
2458                         memcpy(priv->bssid, bss_conf->bssid, ETH_ALEN);
2459                 } else {
2460                         priv->staging_rxon.filter_flags &=
2461                                 ~RXON_FILTER_ASSOC_MSK;
2462                 }
2463
2464         }
2465
2466         /*
2467          * This needs to be after setting the BSSID in case
2468          * mac80211 decides to do both changes at once because
2469          * it will invoke post_associate.
2470          */
2471         if (priv->iw_mode == NL80211_IFTYPE_ADHOC &&
2472             changes & BSS_CHANGED_BEACON) {
2473                 struct sk_buff *beacon = ieee80211_beacon_get(hw, vif);
2474
2475                 if (beacon)
2476                         iwl_mac_beacon_update(hw, beacon);
2477         }
2478
2479         if (changes & BSS_CHANGED_ERP_PREAMBLE) {
2480                 IWL_DEBUG_MAC80211(priv, "ERP_PREAMBLE %d\n",
2481                                    bss_conf->use_short_preamble);
2482                 if (bss_conf->use_short_preamble)
2483                         priv->staging_rxon.flags |= RXON_FLG_SHORT_PREAMBLE_MSK;
2484                 else
2485                         priv->staging_rxon.flags &= ~RXON_FLG_SHORT_PREAMBLE_MSK;
2486         }
2487
2488         if (changes & BSS_CHANGED_ERP_CTS_PROT) {
2489                 IWL_DEBUG_MAC80211(priv, "ERP_CTS %d\n", bss_conf->use_cts_prot);
2490                 if (bss_conf->use_cts_prot && (priv->band != IEEE80211_BAND_5GHZ))
2491                         priv->staging_rxon.flags |= RXON_FLG_TGG_PROTECT_MSK;
2492                 else
2493                         priv->staging_rxon.flags &= ~RXON_FLG_TGG_PROTECT_MSK;
2494         }
2495
2496         if (changes & BSS_CHANGED_BASIC_RATES) {
2497                 /* XXX use this information
2498                  *
2499                  * To do that, remove code from iwl_set_rate() and put something
2500                  * like this here:
2501                  *
2502                 if (A-band)
2503                         priv->staging_rxon.ofdm_basic_rates =
2504                                 bss_conf->basic_rates;
2505                 else
2506                         priv->staging_rxon.ofdm_basic_rates =
2507                                 bss_conf->basic_rates >> 4;
2508                         priv->staging_rxon.cck_basic_rates =
2509                                 bss_conf->basic_rates & 0xF;
2510                  */
2511         }
2512
2513         if (changes & BSS_CHANGED_HT) {
2514                 iwl_ht_conf(priv, bss_conf);
2515
2516                 if (priv->cfg->ops->hcmd->set_rxon_chain)
2517                         priv->cfg->ops->hcmd->set_rxon_chain(priv);
2518         }
2519
2520         if (changes & BSS_CHANGED_ASSOC) {
2521                 IWL_DEBUG_MAC80211(priv, "ASSOC %d\n", bss_conf->assoc);
2522                 if (bss_conf->assoc) {
2523                         priv->assoc_id = bss_conf->aid;
2524                         priv->beacon_int = bss_conf->beacon_int;
2525                         priv->timestamp = bss_conf->timestamp;
2526                         priv->assoc_capability = bss_conf->assoc_capability;
2527
2528                         /*
2529                          * We have just associated, don't start scan too early
2530                          * leave time for EAPOL exchange to complete.
2531                          *
2532                          * XXX: do this in mac80211
2533                          */
2534                         priv->next_scan_jiffies = jiffies +
2535                                         IWL_DELAY_NEXT_SCAN_AFTER_ASSOC;
2536                         if (!iwl_is_rfkill(priv))
2537                                 priv->cfg->ops->lib->post_associate(priv);
2538                 } else
2539                         priv->assoc_id = 0;
2540
2541         }
2542
2543         if (changes && iwl_is_associated(priv) && priv->assoc_id) {
2544                 IWL_DEBUG_MAC80211(priv, "Changes (%#x) while associated\n",
2545                                    changes);
2546                 ret = iwl_send_rxon_assoc(priv);
2547                 if (!ret) {
2548                         /* Sync active_rxon with latest change. */
2549                         memcpy((void *)&priv->active_rxon,
2550                                 &priv->staging_rxon,
2551                                 sizeof(struct iwl_rxon_cmd));
2552                 }
2553         }
2554
2555         mutex_unlock(&priv->mutex);
2556
2557         IWL_DEBUG_MAC80211(priv, "leave\n");
2558 }
2559 EXPORT_SYMBOL(iwl_bss_info_changed);
2560
2561 int iwl_mac_beacon_update(struct ieee80211_hw *hw, struct sk_buff *skb)
2562 {
2563         struct iwl_priv *priv = hw->priv;
2564         unsigned long flags;
2565         __le64 timestamp;
2566
2567         IWL_DEBUG_MAC80211(priv, "enter\n");
2568
2569         if (!iwl_is_ready_rf(priv)) {
2570                 IWL_DEBUG_MAC80211(priv, "leave - RF not ready\n");
2571                 return -EIO;
2572         }
2573
2574         if (priv->iw_mode != NL80211_IFTYPE_ADHOC) {
2575                 IWL_DEBUG_MAC80211(priv, "leave - not IBSS\n");
2576                 return -EIO;
2577         }
2578
2579         spin_lock_irqsave(&priv->lock, flags);
2580
2581         if (priv->ibss_beacon)
2582                 dev_kfree_skb(priv->ibss_beacon);
2583
2584         priv->ibss_beacon = skb;
2585
2586         priv->assoc_id = 0;
2587         timestamp = ((struct ieee80211_mgmt *)skb->data)->u.beacon.timestamp;
2588         priv->timestamp = le64_to_cpu(timestamp);
2589
2590         IWL_DEBUG_MAC80211(priv, "leave\n");
2591         spin_unlock_irqrestore(&priv->lock, flags);
2592
2593         iwl_reset_qos(priv);
2594
2595         priv->cfg->ops->lib->post_associate(priv);
2596
2597
2598         return 0;
2599 }
2600 EXPORT_SYMBOL(iwl_mac_beacon_update);
2601
2602 int iwl_set_mode(struct iwl_priv *priv, int mode)
2603 {
2604         if (mode == NL80211_IFTYPE_ADHOC) {
2605                 const struct iwl_channel_info *ch_info;
2606
2607                 ch_info = iwl_get_channel_info(priv,
2608                         priv->band,
2609                         le16_to_cpu(priv->staging_rxon.channel));
2610
2611                 if (!ch_info || !is_channel_ibss(ch_info)) {
2612                         IWL_ERR(priv, "channel %d not IBSS channel\n",
2613                                   le16_to_cpu(priv->staging_rxon.channel));
2614                         return -EINVAL;
2615                 }
2616         }
2617
2618         iwl_connection_init_rx_config(priv, mode);
2619
2620         if (priv->cfg->ops->hcmd->set_rxon_chain)
2621                 priv->cfg->ops->hcmd->set_rxon_chain(priv);
2622
2623         memcpy(priv->staging_rxon.node_addr, priv->mac_addr, ETH_ALEN);
2624
2625         iwl_clear_stations_table(priv);
2626
2627         /* dont commit rxon if rf-kill is on*/
2628         if (!iwl_is_ready_rf(priv))
2629                 return -EAGAIN;
2630
2631         iwlcore_commit_rxon(priv);
2632
2633         return 0;
2634 }
2635 EXPORT_SYMBOL(iwl_set_mode);
2636
2637 int iwl_mac_add_interface(struct ieee80211_hw *hw,
2638                                  struct ieee80211_if_init_conf *conf)
2639 {
2640         struct iwl_priv *priv = hw->priv;
2641         unsigned long flags;
2642
2643         IWL_DEBUG_MAC80211(priv, "enter: type %d\n", conf->type);
2644
2645         if (priv->vif) {
2646                 IWL_DEBUG_MAC80211(priv, "leave - vif != NULL\n");
2647                 return -EOPNOTSUPP;
2648         }
2649
2650         spin_lock_irqsave(&priv->lock, flags);
2651         priv->vif = conf->vif;
2652         priv->iw_mode = conf->type;
2653
2654         spin_unlock_irqrestore(&priv->lock, flags);
2655
2656         mutex_lock(&priv->mutex);
2657
2658         if (conf->mac_addr) {
2659                 IWL_DEBUG_MAC80211(priv, "Set %pM\n", conf->mac_addr);
2660                 memcpy(priv->mac_addr, conf->mac_addr, ETH_ALEN);
2661         }
2662
2663         if (iwl_set_mode(priv, conf->type) == -EAGAIN)
2664                 /* we are not ready, will run again when ready */
2665                 set_bit(STATUS_MODE_PENDING, &priv->status);
2666
2667         mutex_unlock(&priv->mutex);
2668
2669         IWL_DEBUG_MAC80211(priv, "leave\n");
2670         return 0;
2671 }
2672 EXPORT_SYMBOL(iwl_mac_add_interface);
2673
2674 void iwl_mac_remove_interface(struct ieee80211_hw *hw,
2675                                      struct ieee80211_if_init_conf *conf)
2676 {
2677         struct iwl_priv *priv = hw->priv;
2678
2679         IWL_DEBUG_MAC80211(priv, "enter\n");
2680
2681         mutex_lock(&priv->mutex);
2682
2683         if (iwl_is_ready_rf(priv)) {
2684                 iwl_scan_cancel_timeout(priv, 100);
2685                 priv->staging_rxon.filter_flags &= ~RXON_FILTER_ASSOC_MSK;
2686                 iwlcore_commit_rxon(priv);
2687         }
2688         if (priv->vif == conf->vif) {
2689                 priv->vif = NULL;
2690                 memset(priv->bssid, 0, ETH_ALEN);
2691         }
2692         mutex_unlock(&priv->mutex);
2693
2694         IWL_DEBUG_MAC80211(priv, "leave\n");
2695
2696 }
2697 EXPORT_SYMBOL(iwl_mac_remove_interface);
2698
2699 /**
2700  * iwl_mac_config - mac80211 config callback
2701  *
2702  * We ignore conf->flags & IEEE80211_CONF_SHORT_SLOT_TIME since it seems to
2703  * be set inappropriately and the driver currently sets the hardware up to
2704  * use it whenever needed.
2705  */
2706 int iwl_mac_config(struct ieee80211_hw *hw, u32 changed)
2707 {
2708         struct iwl_priv *priv = hw->priv;
2709         const struct iwl_channel_info *ch_info;
2710         struct ieee80211_conf *conf = &hw->conf;
2711         struct iwl_ht_info *ht_conf = &priv->current_ht_config;
2712         unsigned long flags = 0;
2713         int ret = 0;
2714         u16 ch;
2715         int scan_active = 0;
2716
2717         mutex_lock(&priv->mutex);
2718
2719         IWL_DEBUG_MAC80211(priv, "enter to channel %d changed 0x%X\n",
2720                                         conf->channel->hw_value, changed);
2721
2722         if (unlikely(!priv->cfg->mod_params->disable_hw_scan &&
2723                         test_bit(STATUS_SCANNING, &priv->status))) {
2724                 scan_active = 1;
2725                 IWL_DEBUG_MAC80211(priv, "leave - scanning\n");
2726         }
2727
2728
2729         /* during scanning mac80211 will delay channel setting until
2730          * scan finish with changed = 0
2731          */
2732         if (!changed || (changed & IEEE80211_CONF_CHANGE_CHANNEL)) {
2733                 if (scan_active)
2734                         goto set_ch_out;
2735
2736                 ch = ieee80211_frequency_to_channel(conf->channel->center_freq);
2737                 ch_info = iwl_get_channel_info(priv, conf->channel->band, ch);
2738                 if (!is_channel_valid(ch_info)) {
2739                         IWL_DEBUG_MAC80211(priv, "leave - invalid channel\n");
2740                         ret = -EINVAL;
2741                         goto set_ch_out;
2742                 }
2743
2744                 if (priv->iw_mode == NL80211_IFTYPE_ADHOC &&
2745                         !is_channel_ibss(ch_info)) {
2746                         IWL_ERR(priv, "channel %d in band %d not "
2747                                 "IBSS channel\n",
2748                                 conf->channel->hw_value, conf->channel->band);
2749                         ret = -EINVAL;
2750                         goto set_ch_out;
2751                 }
2752
2753                 spin_lock_irqsave(&priv->lock, flags);
2754
2755                 /* Configure HT40 channels */
2756                 ht_conf->is_ht = conf_is_ht(conf);
2757                 if (ht_conf->is_ht) {
2758                         if (conf_is_ht40_minus(conf)) {
2759                                 ht_conf->extension_chan_offset =
2760                                         IEEE80211_HT_PARAM_CHA_SEC_BELOW;
2761                                 ht_conf->supported_chan_width =
2762                                         IWL_CHANNEL_WIDTH_40MHZ;
2763                         } else if (conf_is_ht40_plus(conf)) {
2764                                 ht_conf->extension_chan_offset =
2765                                         IEEE80211_HT_PARAM_CHA_SEC_ABOVE;
2766                                 ht_conf->supported_chan_width =
2767                                         IWL_CHANNEL_WIDTH_40MHZ;
2768                         } else {
2769                                 ht_conf->extension_chan_offset =
2770                                         IEEE80211_HT_PARAM_CHA_SEC_NONE;
2771                                 ht_conf->supported_chan_width =
2772                                         IWL_CHANNEL_WIDTH_20MHZ;
2773                         }
2774                 } else
2775                         ht_conf->supported_chan_width = IWL_CHANNEL_WIDTH_20MHZ;
2776                 /* Default to no protection. Protection mode will later be set
2777                  * from BSS config in iwl_ht_conf */
2778                 ht_conf->ht_protection = IEEE80211_HT_OP_MODE_PROTECTION_NONE;
2779
2780                 /* if we are switching from ht to 2.4 clear flags
2781                  * from any ht related info since 2.4 does not
2782                  * support ht */
2783                 if ((le16_to_cpu(priv->staging_rxon.channel) != ch))
2784                         priv->staging_rxon.flags = 0;
2785
2786                 iwl_set_rxon_channel(priv, conf->channel);
2787
2788                 iwl_set_flags_for_band(priv, conf->channel->band);
2789                 spin_unlock_irqrestore(&priv->lock, flags);
2790  set_ch_out:
2791                 /* The list of supported rates and rate mask can be different
2792                  * for each band; since the band may have changed, reset
2793                  * the rate mask to what mac80211 lists */
2794                 iwl_set_rate(priv);
2795         }
2796
2797         if (changed & IEEE80211_CONF_CHANGE_PS) {
2798                 ret = iwl_power_update_mode(priv, false);
2799                 if (ret)
2800                         IWL_DEBUG_MAC80211(priv, "Error setting sleep level\n");
2801         }
2802
2803         if (changed & IEEE80211_CONF_CHANGE_POWER) {
2804                 IWL_DEBUG_MAC80211(priv, "TX Power old=%d new=%d\n",
2805                         priv->tx_power_user_lmt, conf->power_level);
2806
2807                 iwl_set_tx_power(priv, conf->power_level, false);
2808         }
2809
2810         /* call to ensure that 4965 rx_chain is set properly in monitor mode */
2811         if (priv->cfg->ops->hcmd->set_rxon_chain)
2812                 priv->cfg->ops->hcmd->set_rxon_chain(priv);
2813
2814         if (!iwl_is_ready(priv)) {
2815                 IWL_DEBUG_MAC80211(priv, "leave - not ready\n");
2816                 goto out;
2817         }
2818
2819         if (scan_active)
2820                 goto out;
2821
2822         if (memcmp(&priv->active_rxon,
2823                    &priv->staging_rxon, sizeof(priv->staging_rxon)))
2824                 iwlcore_commit_rxon(priv);
2825         else
2826                 IWL_DEBUG_INFO(priv, "Not re-sending same RXON configuration.\n");
2827
2828
2829 out:
2830         IWL_DEBUG_MAC80211(priv, "leave\n");
2831         mutex_unlock(&priv->mutex);
2832         return ret;
2833 }
2834 EXPORT_SYMBOL(iwl_mac_config);
2835
2836 int iwl_mac_get_tx_stats(struct ieee80211_hw *hw,
2837                          struct ieee80211_tx_queue_stats *stats)
2838 {
2839         struct iwl_priv *priv = hw->priv;
2840         int i, avail;
2841         struct iwl_tx_queue *txq;
2842         struct iwl_queue *q;
2843         unsigned long flags;
2844
2845         IWL_DEBUG_MAC80211(priv, "enter\n");
2846
2847         if (!iwl_is_ready_rf(priv)) {
2848                 IWL_DEBUG_MAC80211(priv, "leave - RF not ready\n");
2849                 return -EIO;
2850         }
2851
2852         spin_lock_irqsave(&priv->lock, flags);
2853
2854         for (i = 0; i < AC_NUM; i++) {
2855                 txq = &priv->txq[i];
2856                 q = &txq->q;
2857                 avail = iwl_queue_space(q);
2858
2859                 stats[i].len = q->n_window - avail;
2860                 stats[i].limit = q->n_window - q->high_mark;
2861                 stats[i].count = q->n_window;
2862
2863         }
2864         spin_unlock_irqrestore(&priv->lock, flags);
2865
2866         IWL_DEBUG_MAC80211(priv, "leave\n");
2867
2868         return 0;
2869 }
2870 EXPORT_SYMBOL(iwl_mac_get_tx_stats);
2871
2872 void iwl_mac_reset_tsf(struct ieee80211_hw *hw)
2873 {
2874         struct iwl_priv *priv = hw->priv;
2875         unsigned long flags;
2876
2877         mutex_lock(&priv->mutex);
2878         IWL_DEBUG_MAC80211(priv, "enter\n");
2879
2880         spin_lock_irqsave(&priv->lock, flags);
2881         memset(&priv->current_ht_config, 0, sizeof(struct iwl_ht_info));
2882         spin_unlock_irqrestore(&priv->lock, flags);
2883
2884         iwl_reset_qos(priv);
2885
2886         spin_lock_irqsave(&priv->lock, flags);
2887         priv->assoc_id = 0;
2888         priv->assoc_capability = 0;
2889         priv->assoc_station_added = 0;
2890
2891         /* new association get rid of ibss beacon skb */
2892         if (priv->ibss_beacon)
2893                 dev_kfree_skb(priv->ibss_beacon);
2894
2895         priv->ibss_beacon = NULL;
2896
2897         priv->beacon_int = priv->vif->bss_conf.beacon_int;
2898         priv->timestamp = 0;
2899         if ((priv->iw_mode == NL80211_IFTYPE_STATION))
2900                 priv->beacon_int = 0;
2901
2902         spin_unlock_irqrestore(&priv->lock, flags);
2903
2904         if (!iwl_is_ready_rf(priv)) {
2905                 IWL_DEBUG_MAC80211(priv, "leave - not ready\n");
2906                 mutex_unlock(&priv->mutex);
2907                 return;
2908         }
2909
2910         /* we are restarting association process
2911          * clear RXON_FILTER_ASSOC_MSK bit
2912          */
2913         if (priv->iw_mode != NL80211_IFTYPE_AP) {
2914                 iwl_scan_cancel_timeout(priv, 100);
2915                 priv->staging_rxon.filter_flags &= ~RXON_FILTER_ASSOC_MSK;
2916                 iwlcore_commit_rxon(priv);
2917         }
2918
2919         if (priv->iw_mode != NL80211_IFTYPE_ADHOC) {
2920                 IWL_DEBUG_MAC80211(priv, "leave - not in IBSS\n");
2921                 mutex_unlock(&priv->mutex);
2922                 return;
2923         }
2924
2925         iwl_set_rate(priv);
2926
2927         mutex_unlock(&priv->mutex);
2928
2929         IWL_DEBUG_MAC80211(priv, "leave\n");
2930 }
2931 EXPORT_SYMBOL(iwl_mac_reset_tsf);
2932
2933 #ifdef CONFIG_IWLWIFI_DEBUGFS
2934
2935 #define IWL_TRAFFIC_DUMP_SIZE   (IWL_TRAFFIC_ENTRY_SIZE * IWL_TRAFFIC_ENTRIES)
2936
2937 void iwl_reset_traffic_log(struct iwl_priv *priv)
2938 {
2939         priv->tx_traffic_idx = 0;
2940         priv->rx_traffic_idx = 0;
2941         if (priv->tx_traffic)
2942                 memset(priv->tx_traffic, 0, IWL_TRAFFIC_DUMP_SIZE);
2943         if (priv->rx_traffic)
2944                 memset(priv->rx_traffic, 0, IWL_TRAFFIC_DUMP_SIZE);
2945 }
2946
2947 int iwl_alloc_traffic_mem(struct iwl_priv *priv)
2948 {
2949         u32 traffic_size = IWL_TRAFFIC_DUMP_SIZE;
2950
2951         if (iwl_debug_level & IWL_DL_TX) {
2952                 if (!priv->tx_traffic) {
2953                         priv->tx_traffic =
2954                                 kzalloc(traffic_size, GFP_KERNEL);
2955                         if (!priv->tx_traffic)
2956                                 return -ENOMEM;
2957                 }
2958         }
2959         if (iwl_debug_level & IWL_DL_RX) {
2960                 if (!priv->rx_traffic) {
2961                         priv->rx_traffic =
2962                                 kzalloc(traffic_size, GFP_KERNEL);
2963                         if (!priv->rx_traffic)
2964                                 return -ENOMEM;
2965                 }
2966         }
2967         iwl_reset_traffic_log(priv);
2968         return 0;
2969 }
2970 EXPORT_SYMBOL(iwl_alloc_traffic_mem);
2971
2972 void iwl_free_traffic_mem(struct iwl_priv *priv)
2973 {
2974         kfree(priv->tx_traffic);
2975         priv->tx_traffic = NULL;
2976
2977         kfree(priv->rx_traffic);
2978         priv->rx_traffic = NULL;
2979 }
2980 EXPORT_SYMBOL(iwl_free_traffic_mem);
2981
2982 void iwl_dbg_log_tx_data_frame(struct iwl_priv *priv,
2983                       u16 length, struct ieee80211_hdr *header)
2984 {
2985         __le16 fc;
2986         u16 len;
2987
2988         if (likely(!(iwl_debug_level & IWL_DL_TX)))
2989                 return;
2990
2991         if (!priv->tx_traffic)
2992                 return;
2993
2994         fc = header->frame_control;
2995         if (ieee80211_is_data(fc)) {
2996                 len = (length > IWL_TRAFFIC_ENTRY_SIZE)
2997                        ? IWL_TRAFFIC_ENTRY_SIZE : length;
2998                 memcpy((priv->tx_traffic +
2999                        (priv->tx_traffic_idx * IWL_TRAFFIC_ENTRY_SIZE)),
3000                        header, len);
3001                 priv->tx_traffic_idx =
3002                         (priv->tx_traffic_idx + 1) % IWL_TRAFFIC_ENTRIES;
3003         }