iwlwifi: default to using all chains
[linux-2.6.git] / drivers / net / wireless / iwlwifi / iwl-core.c
1 /******************************************************************************
2  *
3  * GPL LICENSE SUMMARY
4  *
5  * Copyright(c) 2008 - 2009 Intel Corporation. All rights reserved.
6  *
7  * This program is free software; you can redistribute it and/or modify
8  * it under the terms of version 2 of the GNU General Public License as
9  * published by the Free Software Foundation.
10  *
11  * This program is distributed in the hope that it will be useful, but
12  * WITHOUT ANY WARRANTY; without even the implied warranty of
13  * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
14  * General Public License for more details.
15  *
16  * You should have received a copy of the GNU General Public License
17  * along with this program; if not, write to the Free Software
18  * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110,
19  * USA
20  *
21  * The full GNU General Public License is included in this distribution
22  * in the file called LICENSE.GPL.
23  *
24  * Contact Information:
25  *  Intel Linux Wireless <ilw@linux.intel.com>
26  * Intel Corporation, 5200 N.E. Elam Young Parkway, Hillsboro, OR 97124-6497
27  *****************************************************************************/
28
29 #include <linux/kernel.h>
30 #include <linux/module.h>
31 #include <linux/etherdevice.h>
32 #include <net/mac80211.h>
33
34 #include "iwl-eeprom.h"
35 #include "iwl-dev.h" /* FIXME: remove */
36 #include "iwl-debug.h"
37 #include "iwl-core.h"
38 #include "iwl-io.h"
39 #include "iwl-power.h"
40 #include "iwl-sta.h"
41 #include "iwl-helpers.h"
42
43
44 MODULE_DESCRIPTION("iwl core");
45 MODULE_VERSION(IWLWIFI_VERSION);
46 MODULE_AUTHOR(DRV_COPYRIGHT " " DRV_AUTHOR);
47 MODULE_LICENSE("GPL");
48
49 #define IWL_DECLARE_RATE_INFO(r, s, ip, in, rp, rn, pp, np)    \
50         [IWL_RATE_##r##M_INDEX] = { IWL_RATE_##r##M_PLCP,      \
51                                     IWL_RATE_SISO_##s##M_PLCP, \
52                                     IWL_RATE_MIMO2_##s##M_PLCP,\
53                                     IWL_RATE_MIMO3_##s##M_PLCP,\
54                                     IWL_RATE_##r##M_IEEE,      \
55                                     IWL_RATE_##ip##M_INDEX,    \
56                                     IWL_RATE_##in##M_INDEX,    \
57                                     IWL_RATE_##rp##M_INDEX,    \
58                                     IWL_RATE_##rn##M_INDEX,    \
59                                     IWL_RATE_##pp##M_INDEX,    \
60                                     IWL_RATE_##np##M_INDEX }
61
62 u32 iwl_debug_level;
63 EXPORT_SYMBOL(iwl_debug_level);
64
65 static irqreturn_t iwl_isr(int irq, void *data);
66
67 /*
68  * Parameter order:
69  *   rate, ht rate, prev rate, next rate, prev tgg rate, next tgg rate
70  *
71  * If there isn't a valid next or previous rate then INV is used which
72  * maps to IWL_RATE_INVALID
73  *
74  */
75 const struct iwl_rate_info iwl_rates[IWL_RATE_COUNT] = {
76         IWL_DECLARE_RATE_INFO(1, INV, INV, 2, INV, 2, INV, 2),    /*  1mbps */
77         IWL_DECLARE_RATE_INFO(2, INV, 1, 5, 1, 5, 1, 5),          /*  2mbps */
78         IWL_DECLARE_RATE_INFO(5, INV, 2, 6, 2, 11, 2, 11),        /*5.5mbps */
79         IWL_DECLARE_RATE_INFO(11, INV, 9, 12, 9, 12, 5, 18),      /* 11mbps */
80         IWL_DECLARE_RATE_INFO(6, 6, 5, 9, 5, 11, 5, 11),        /*  6mbps */
81         IWL_DECLARE_RATE_INFO(9, 6, 6, 11, 6, 11, 5, 11),       /*  9mbps */
82         IWL_DECLARE_RATE_INFO(12, 12, 11, 18, 11, 18, 11, 18),   /* 12mbps */
83         IWL_DECLARE_RATE_INFO(18, 18, 12, 24, 12, 24, 11, 24),   /* 18mbps */
84         IWL_DECLARE_RATE_INFO(24, 24, 18, 36, 18, 36, 18, 36),   /* 24mbps */
85         IWL_DECLARE_RATE_INFO(36, 36, 24, 48, 24, 48, 24, 48),   /* 36mbps */
86         IWL_DECLARE_RATE_INFO(48, 48, 36, 54, 36, 54, 36, 54),   /* 48mbps */
87         IWL_DECLARE_RATE_INFO(54, 54, 48, INV, 48, INV, 48, INV),/* 54mbps */
88         IWL_DECLARE_RATE_INFO(60, 60, 48, INV, 48, INV, 48, INV),/* 60mbps */
89         /* FIXME:RS:          ^^    should be INV (legacy) */
90 };
91 EXPORT_SYMBOL(iwl_rates);
92
93 /**
94  * translate ucode response to mac80211 tx status control values
95  */
96 void iwl_hwrate_to_tx_control(struct iwl_priv *priv, u32 rate_n_flags,
97                                   struct ieee80211_tx_info *info)
98 {
99         struct ieee80211_tx_rate *r = &info->control.rates[0];
100
101         info->antenna_sel_tx =
102                 ((rate_n_flags & RATE_MCS_ANT_ABC_MSK) >> RATE_MCS_ANT_POS);
103         if (rate_n_flags & RATE_MCS_HT_MSK)
104                 r->flags |= IEEE80211_TX_RC_MCS;
105         if (rate_n_flags & RATE_MCS_GF_MSK)
106                 r->flags |= IEEE80211_TX_RC_GREEN_FIELD;
107         if (rate_n_flags & RATE_MCS_HT40_MSK)
108                 r->flags |= IEEE80211_TX_RC_40_MHZ_WIDTH;
109         if (rate_n_flags & RATE_MCS_DUP_MSK)
110                 r->flags |= IEEE80211_TX_RC_DUP_DATA;
111         if (rate_n_flags & RATE_MCS_SGI_MSK)
112                 r->flags |= IEEE80211_TX_RC_SHORT_GI;
113         r->idx = iwl_hwrate_to_mac80211_idx(rate_n_flags, info->band);
114 }
115 EXPORT_SYMBOL(iwl_hwrate_to_tx_control);
116
117 int iwl_hwrate_to_plcp_idx(u32 rate_n_flags)
118 {
119         int idx = 0;
120
121         /* HT rate format */
122         if (rate_n_flags & RATE_MCS_HT_MSK) {
123                 idx = (rate_n_flags & 0xff);
124
125                 if (idx >= IWL_RATE_MIMO3_6M_PLCP)
126                         idx = idx - IWL_RATE_MIMO3_6M_PLCP;
127                 else if (idx >= IWL_RATE_MIMO2_6M_PLCP)
128                         idx = idx - IWL_RATE_MIMO2_6M_PLCP;
129
130                 idx += IWL_FIRST_OFDM_RATE;
131                 /* skip 9M not supported in ht*/
132                 if (idx >= IWL_RATE_9M_INDEX)
133                         idx += 1;
134                 if ((idx >= IWL_FIRST_OFDM_RATE) && (idx <= IWL_LAST_OFDM_RATE))
135                         return idx;
136
137         /* legacy rate format, search for match in table */
138         } else {
139                 for (idx = 0; idx < ARRAY_SIZE(iwl_rates); idx++)
140                         if (iwl_rates[idx].plcp == (rate_n_flags & 0xFF))
141                                 return idx;
142         }
143
144         return -1;
145 }
146 EXPORT_SYMBOL(iwl_hwrate_to_plcp_idx);
147
148 int iwl_hwrate_to_mac80211_idx(u32 rate_n_flags, enum ieee80211_band band)
149 {
150         int idx = 0;
151         int band_offset = 0;
152
153         /* HT rate format: mac80211 wants an MCS number, which is just LSB */
154         if (rate_n_flags & RATE_MCS_HT_MSK) {
155                 idx = (rate_n_flags & 0xff);
156                 return idx;
157         /* Legacy rate format, search for match in table */
158         } else {
159                 if (band == IEEE80211_BAND_5GHZ)
160                         band_offset = IWL_FIRST_OFDM_RATE;
161                 for (idx = band_offset; idx < IWL_RATE_COUNT_LEGACY; idx++)
162                         if (iwl_rates[idx].plcp == (rate_n_flags & 0xFF))
163                                 return idx - band_offset;
164         }
165
166         return -1;
167 }
168
169 u8 iwl_toggle_tx_ant(struct iwl_priv *priv, u8 ant)
170 {
171         int i;
172         u8 ind = ant;
173         for (i = 0; i < RATE_ANT_NUM - 1; i++) {
174                 ind = (ind + 1) < RATE_ANT_NUM ?  ind + 1 : 0;
175                 if (priv->hw_params.valid_tx_ant & BIT(ind))
176                         return ind;
177         }
178         return ant;
179 }
180
181 const u8 iwl_bcast_addr[ETH_ALEN] = { 0xFF, 0xFF, 0xFF, 0xFF, 0xFF, 0xFF };
182 EXPORT_SYMBOL(iwl_bcast_addr);
183
184
185 /* This function both allocates and initializes hw and priv. */
186 struct ieee80211_hw *iwl_alloc_all(struct iwl_cfg *cfg,
187                 struct ieee80211_ops *hw_ops)
188 {
189         struct iwl_priv *priv;
190
191         /* mac80211 allocates memory for this device instance, including
192          *   space for this driver's private structure */
193         struct ieee80211_hw *hw =
194                 ieee80211_alloc_hw(sizeof(struct iwl_priv), hw_ops);
195         if (hw == NULL) {
196                 printk(KERN_ERR "%s: Can not allocate network device\n",
197                        cfg->name);
198                 goto out;
199         }
200
201         priv = hw->priv;
202         priv->hw = hw;
203
204 out:
205         return hw;
206 }
207 EXPORT_SYMBOL(iwl_alloc_all);
208
209 void iwl_hw_detect(struct iwl_priv *priv)
210 {
211         priv->hw_rev = _iwl_read32(priv, CSR_HW_REV);
212         priv->hw_wa_rev = _iwl_read32(priv, CSR_HW_REV_WA_REG);
213         pci_read_config_byte(priv->pci_dev, PCI_REVISION_ID, &priv->rev_id);
214 }
215 EXPORT_SYMBOL(iwl_hw_detect);
216
217 int iwl_hw_nic_init(struct iwl_priv *priv)
218 {
219         unsigned long flags;
220         struct iwl_rx_queue *rxq = &priv->rxq;
221         int ret;
222
223         /* nic_init */
224         spin_lock_irqsave(&priv->lock, flags);
225         priv->cfg->ops->lib->apm_ops.init(priv);
226         iwl_write32(priv, CSR_INT_COALESCING, 512 / 32);
227         spin_unlock_irqrestore(&priv->lock, flags);
228
229         ret = priv->cfg->ops->lib->apm_ops.set_pwr_src(priv, IWL_PWR_SRC_VMAIN);
230
231         priv->cfg->ops->lib->apm_ops.config(priv);
232
233         /* Allocate the RX queue, or reset if it is already allocated */
234         if (!rxq->bd) {
235                 ret = iwl_rx_queue_alloc(priv);
236                 if (ret) {
237                         IWL_ERR(priv, "Unable to initialize Rx queue\n");
238                         return -ENOMEM;
239                 }
240         } else
241                 iwl_rx_queue_reset(priv, rxq);
242
243         iwl_rx_replenish(priv);
244
245         iwl_rx_init(priv, rxq);
246
247         spin_lock_irqsave(&priv->lock, flags);
248
249         rxq->need_update = 1;
250         iwl_rx_queue_update_write_ptr(priv, rxq);
251
252         spin_unlock_irqrestore(&priv->lock, flags);
253
254         /* Allocate and init all Tx and Command queues */
255         ret = iwl_txq_ctx_reset(priv);
256         if (ret)
257                 return ret;
258
259         set_bit(STATUS_INIT, &priv->status);
260
261         return 0;
262 }
263 EXPORT_SYMBOL(iwl_hw_nic_init);
264
265 /*
266  * QoS  support
267 */
268 void iwl_activate_qos(struct iwl_priv *priv, u8 force)
269 {
270         if (test_bit(STATUS_EXIT_PENDING, &priv->status))
271                 return;
272
273         priv->qos_data.def_qos_parm.qos_flags = 0;
274
275         if (priv->qos_data.qos_cap.q_AP.queue_request &&
276             !priv->qos_data.qos_cap.q_AP.txop_request)
277                 priv->qos_data.def_qos_parm.qos_flags |=
278                         QOS_PARAM_FLG_TXOP_TYPE_MSK;
279         if (priv->qos_data.qos_active)
280                 priv->qos_data.def_qos_parm.qos_flags |=
281                         QOS_PARAM_FLG_UPDATE_EDCA_MSK;
282
283         if (priv->current_ht_config.is_ht)
284                 priv->qos_data.def_qos_parm.qos_flags |= QOS_PARAM_FLG_TGN_MSK;
285
286         if (force || iwl_is_associated(priv)) {
287                 IWL_DEBUG_QOS(priv, "send QoS cmd with Qos active=%d FLAGS=0x%X\n",
288                                 priv->qos_data.qos_active,
289                                 priv->qos_data.def_qos_parm.qos_flags);
290
291                 iwl_send_cmd_pdu_async(priv, REPLY_QOS_PARAM,
292                                        sizeof(struct iwl_qosparam_cmd),
293                                        &priv->qos_data.def_qos_parm, NULL);
294         }
295 }
296 EXPORT_SYMBOL(iwl_activate_qos);
297
298 /*
299  * AC        CWmin         CW max      AIFSN      TXOP Limit    TXOP Limit
300  *                                              (802.11b)      (802.11a/g)
301  * AC_BK      15            1023        7           0               0
302  * AC_BE      15            1023        3           0               0
303  * AC_VI       7              15        2          6.016ms       3.008ms
304  * AC_VO       3               7        2          3.264ms       1.504ms
305  */
306 void iwl_reset_qos(struct iwl_priv *priv)
307 {
308         u16 cw_min = 15;
309         u16 cw_max = 1023;
310         u8 aifs = 2;
311         bool is_legacy = false;
312         unsigned long flags;
313         int i;
314
315         spin_lock_irqsave(&priv->lock, flags);
316         /* QoS always active in AP and ADHOC mode
317          * In STA mode wait for association
318          */
319         if (priv->iw_mode == NL80211_IFTYPE_ADHOC ||
320             priv->iw_mode == NL80211_IFTYPE_AP)
321                 priv->qos_data.qos_active = 1;
322         else
323                 priv->qos_data.qos_active = 0;
324
325         /* check for legacy mode */
326         if ((priv->iw_mode == NL80211_IFTYPE_ADHOC &&
327             (priv->active_rate & IWL_OFDM_RATES_MASK) == 0) ||
328             (priv->iw_mode == NL80211_IFTYPE_STATION &&
329             (priv->staging_rxon.flags & RXON_FLG_SHORT_SLOT_MSK) == 0)) {
330                 cw_min = 31;
331                 is_legacy = 1;
332         }
333
334         if (priv->qos_data.qos_active)
335                 aifs = 3;
336
337         /* AC_BE */
338         priv->qos_data.def_qos_parm.ac[0].cw_min = cpu_to_le16(cw_min);
339         priv->qos_data.def_qos_parm.ac[0].cw_max = cpu_to_le16(cw_max);
340         priv->qos_data.def_qos_parm.ac[0].aifsn = aifs;
341         priv->qos_data.def_qos_parm.ac[0].edca_txop = 0;
342         priv->qos_data.def_qos_parm.ac[0].reserved1 = 0;
343
344         if (priv->qos_data.qos_active) {
345                 /* AC_BK */
346                 i = 1;
347                 priv->qos_data.def_qos_parm.ac[i].cw_min = cpu_to_le16(cw_min);
348                 priv->qos_data.def_qos_parm.ac[i].cw_max = cpu_to_le16(cw_max);
349                 priv->qos_data.def_qos_parm.ac[i].aifsn = 7;
350                 priv->qos_data.def_qos_parm.ac[i].edca_txop = 0;
351                 priv->qos_data.def_qos_parm.ac[i].reserved1 = 0;
352
353                 /* AC_VI */
354                 i = 2;
355                 priv->qos_data.def_qos_parm.ac[i].cw_min =
356                         cpu_to_le16((cw_min + 1) / 2 - 1);
357                 priv->qos_data.def_qos_parm.ac[i].cw_max =
358                         cpu_to_le16(cw_min);
359                 priv->qos_data.def_qos_parm.ac[i].aifsn = 2;
360                 if (is_legacy)
361                         priv->qos_data.def_qos_parm.ac[i].edca_txop =
362                                 cpu_to_le16(6016);
363                 else
364                         priv->qos_data.def_qos_parm.ac[i].edca_txop =
365                                 cpu_to_le16(3008);
366                 priv->qos_data.def_qos_parm.ac[i].reserved1 = 0;
367
368                 /* AC_VO */
369                 i = 3;
370                 priv->qos_data.def_qos_parm.ac[i].cw_min =
371                         cpu_to_le16((cw_min + 1) / 4 - 1);
372                 priv->qos_data.def_qos_parm.ac[i].cw_max =
373                         cpu_to_le16((cw_min + 1) / 2 - 1);
374                 priv->qos_data.def_qos_parm.ac[i].aifsn = 2;
375                 priv->qos_data.def_qos_parm.ac[i].reserved1 = 0;
376                 if (is_legacy)
377                         priv->qos_data.def_qos_parm.ac[i].edca_txop =
378                                 cpu_to_le16(3264);
379                 else
380                         priv->qos_data.def_qos_parm.ac[i].edca_txop =
381                                 cpu_to_le16(1504);
382         } else {
383                 for (i = 1; i < 4; i++) {
384                         priv->qos_data.def_qos_parm.ac[i].cw_min =
385                                 cpu_to_le16(cw_min);
386                         priv->qos_data.def_qos_parm.ac[i].cw_max =
387                                 cpu_to_le16(cw_max);
388                         priv->qos_data.def_qos_parm.ac[i].aifsn = aifs;
389                         priv->qos_data.def_qos_parm.ac[i].edca_txop = 0;
390                         priv->qos_data.def_qos_parm.ac[i].reserved1 = 0;
391                 }
392         }
393         IWL_DEBUG_QOS(priv, "set QoS to default \n");
394
395         spin_unlock_irqrestore(&priv->lock, flags);
396 }
397 EXPORT_SYMBOL(iwl_reset_qos);
398
399 #define MAX_BIT_RATE_40_MHZ 150 /* Mbps */
400 #define MAX_BIT_RATE_20_MHZ 72 /* Mbps */
401 static void iwlcore_init_ht_hw_capab(const struct iwl_priv *priv,
402                               struct ieee80211_sta_ht_cap *ht_info,
403                               enum ieee80211_band band)
404 {
405         u16 max_bit_rate = 0;
406         u8 rx_chains_num = priv->hw_params.rx_chains_num;
407         u8 tx_chains_num = priv->hw_params.tx_chains_num;
408
409         ht_info->cap = 0;
410         memset(&ht_info->mcs, 0, sizeof(ht_info->mcs));
411
412         ht_info->ht_supported = true;
413
414         if (priv->cfg->ht_greenfield_support)
415                 ht_info->cap |= IEEE80211_HT_CAP_GRN_FLD;
416         ht_info->cap |= IEEE80211_HT_CAP_SGI_20;
417         ht_info->cap |= (IEEE80211_HT_CAP_SM_PS &
418                              (WLAN_HT_CAP_SM_PS_DISABLED << 2));
419
420         max_bit_rate = MAX_BIT_RATE_20_MHZ;
421         if (priv->hw_params.ht40_channel & BIT(band)) {
422                 ht_info->cap |= IEEE80211_HT_CAP_SUP_WIDTH_20_40;
423                 ht_info->cap |= IEEE80211_HT_CAP_SGI_40;
424                 ht_info->mcs.rx_mask[4] = 0x01;
425                 max_bit_rate = MAX_BIT_RATE_40_MHZ;
426         }
427
428         if (priv->cfg->mod_params->amsdu_size_8K)
429                 ht_info->cap |= IEEE80211_HT_CAP_MAX_AMSDU;
430
431         ht_info->ampdu_factor = CFG_HT_RX_AMPDU_FACTOR_DEF;
432         ht_info->ampdu_density = CFG_HT_MPDU_DENSITY_DEF;
433
434         ht_info->mcs.rx_mask[0] = 0xFF;
435         if (rx_chains_num >= 2)
436                 ht_info->mcs.rx_mask[1] = 0xFF;
437         if (rx_chains_num >= 3)
438                 ht_info->mcs.rx_mask[2] = 0xFF;
439
440         /* Highest supported Rx data rate */
441         max_bit_rate *= rx_chains_num;
442         WARN_ON(max_bit_rate & ~IEEE80211_HT_MCS_RX_HIGHEST_MASK);
443         ht_info->mcs.rx_highest = cpu_to_le16(max_bit_rate);
444
445         /* Tx MCS capabilities */
446         ht_info->mcs.tx_params = IEEE80211_HT_MCS_TX_DEFINED;
447         if (tx_chains_num != rx_chains_num) {
448                 ht_info->mcs.tx_params |= IEEE80211_HT_MCS_TX_RX_DIFF;
449                 ht_info->mcs.tx_params |= ((tx_chains_num - 1) <<
450                                 IEEE80211_HT_MCS_TX_MAX_STREAMS_SHIFT);
451         }
452 }
453
454 static void iwlcore_init_hw_rates(struct iwl_priv *priv,
455                               struct ieee80211_rate *rates)
456 {
457         int i;
458
459         for (i = 0; i < IWL_RATE_COUNT_LEGACY; i++) {
460                 rates[i].bitrate = iwl_rates[i].ieee * 5;
461                 rates[i].hw_value = i; /* Rate scaling will work on indexes */
462                 rates[i].hw_value_short = i;
463                 rates[i].flags = 0;
464                 if ((i >= IWL_FIRST_CCK_RATE) && (i <= IWL_LAST_CCK_RATE)) {
465                         /*
466                          * If CCK != 1M then set short preamble rate flag.
467                          */
468                         rates[i].flags |=
469                                 (iwl_rates[i].plcp == IWL_RATE_1M_PLCP) ?
470                                         0 : IEEE80211_RATE_SHORT_PREAMBLE;
471                 }
472         }
473 }
474
475
476 /**
477  * iwlcore_init_geos - Initialize mac80211's geo/channel info based from eeprom
478  */
479 int iwlcore_init_geos(struct iwl_priv *priv)
480 {
481         struct iwl_channel_info *ch;
482         struct ieee80211_supported_band *sband;
483         struct ieee80211_channel *channels;
484         struct ieee80211_channel *geo_ch;
485         struct ieee80211_rate *rates;
486         int i = 0;
487
488         if (priv->bands[IEEE80211_BAND_2GHZ].n_bitrates ||
489             priv->bands[IEEE80211_BAND_5GHZ].n_bitrates) {
490                 IWL_DEBUG_INFO(priv, "Geography modes already initialized.\n");
491                 set_bit(STATUS_GEO_CONFIGURED, &priv->status);
492                 return 0;
493         }
494
495         channels = kzalloc(sizeof(struct ieee80211_channel) *
496                            priv->channel_count, GFP_KERNEL);
497         if (!channels)
498                 return -ENOMEM;
499
500         rates = kzalloc((sizeof(struct ieee80211_rate) * IWL_RATE_COUNT_LEGACY),
501                         GFP_KERNEL);
502         if (!rates) {
503                 kfree(channels);
504                 return -ENOMEM;
505         }
506
507         /* 5.2GHz channels start after the 2.4GHz channels */
508         sband = &priv->bands[IEEE80211_BAND_5GHZ];
509         sband->channels = &channels[ARRAY_SIZE(iwl_eeprom_band_1)];
510         /* just OFDM */
511         sband->bitrates = &rates[IWL_FIRST_OFDM_RATE];
512         sband->n_bitrates = IWL_RATE_COUNT_LEGACY - IWL_FIRST_OFDM_RATE;
513
514         if (priv->cfg->sku & IWL_SKU_N)
515                 iwlcore_init_ht_hw_capab(priv, &sband->ht_cap,
516                                          IEEE80211_BAND_5GHZ);
517
518         sband = &priv->bands[IEEE80211_BAND_2GHZ];
519         sband->channels = channels;
520         /* OFDM & CCK */
521         sband->bitrates = rates;
522         sband->n_bitrates = IWL_RATE_COUNT_LEGACY;
523
524         if (priv->cfg->sku & IWL_SKU_N)
525                 iwlcore_init_ht_hw_capab(priv, &sband->ht_cap,
526                                          IEEE80211_BAND_2GHZ);
527
528         priv->ieee_channels = channels;
529         priv->ieee_rates = rates;
530
531         for (i = 0;  i < priv->channel_count; i++) {
532                 ch = &priv->channel_info[i];
533
534                 /* FIXME: might be removed if scan is OK */
535                 if (!is_channel_valid(ch))
536                         continue;
537
538                 if (is_channel_a_band(ch))
539                         sband =  &priv->bands[IEEE80211_BAND_5GHZ];
540                 else
541                         sband =  &priv->bands[IEEE80211_BAND_2GHZ];
542
543                 geo_ch = &sband->channels[sband->n_channels++];
544
545                 geo_ch->center_freq =
546                                 ieee80211_channel_to_frequency(ch->channel);
547                 geo_ch->max_power = ch->max_power_avg;
548                 geo_ch->max_antenna_gain = 0xff;
549                 geo_ch->hw_value = ch->channel;
550
551                 if (is_channel_valid(ch)) {
552                         if (!(ch->flags & EEPROM_CHANNEL_IBSS))
553                                 geo_ch->flags |= IEEE80211_CHAN_NO_IBSS;
554
555                         if (!(ch->flags & EEPROM_CHANNEL_ACTIVE))
556                                 geo_ch->flags |= IEEE80211_CHAN_PASSIVE_SCAN;
557
558                         if (ch->flags & EEPROM_CHANNEL_RADAR)
559                                 geo_ch->flags |= IEEE80211_CHAN_RADAR;
560
561                         geo_ch->flags |= ch->ht40_extension_channel;
562
563                         if (ch->max_power_avg > priv->tx_power_device_lmt)
564                                 priv->tx_power_device_lmt = ch->max_power_avg;
565                 } else {
566                         geo_ch->flags |= IEEE80211_CHAN_DISABLED;
567                 }
568
569                 IWL_DEBUG_INFO(priv, "Channel %d Freq=%d[%sGHz] %s flag=0x%X\n",
570                                 ch->channel, geo_ch->center_freq,
571                                 is_channel_a_band(ch) ?  "5.2" : "2.4",
572                                 geo_ch->flags & IEEE80211_CHAN_DISABLED ?
573                                 "restricted" : "valid",
574                                  geo_ch->flags);
575         }
576
577         if ((priv->bands[IEEE80211_BAND_5GHZ].n_channels == 0) &&
578              priv->cfg->sku & IWL_SKU_A) {
579                 IWL_INFO(priv, "Incorrectly detected BG card as ABG. "
580                         "Please send your PCI ID 0x%04X:0x%04X to maintainer.\n",
581                            priv->pci_dev->device,
582                            priv->pci_dev->subsystem_device);
583                 priv->cfg->sku &= ~IWL_SKU_A;
584         }
585
586         IWL_INFO(priv, "Tunable channels: %d 802.11bg, %d 802.11a channels\n",
587                    priv->bands[IEEE80211_BAND_2GHZ].n_channels,
588                    priv->bands[IEEE80211_BAND_5GHZ].n_channels);
589
590         set_bit(STATUS_GEO_CONFIGURED, &priv->status);
591
592         return 0;
593 }
594 EXPORT_SYMBOL(iwlcore_init_geos);
595
596 /*
597  * iwlcore_free_geos - undo allocations in iwlcore_init_geos
598  */
599 void iwlcore_free_geos(struct iwl_priv *priv)
600 {
601         kfree(priv->ieee_channels);
602         kfree(priv->ieee_rates);
603         clear_bit(STATUS_GEO_CONFIGURED, &priv->status);
604 }
605 EXPORT_SYMBOL(iwlcore_free_geos);
606
607 static bool is_single_rx_stream(struct iwl_priv *priv)
608 {
609         return !priv->current_ht_config.is_ht ||
610                priv->current_ht_config.single_chain_sufficient;
611 }
612
613 static u8 iwl_is_channel_extension(struct iwl_priv *priv,
614                                    enum ieee80211_band band,
615                                    u16 channel, u8 extension_chan_offset)
616 {
617         const struct iwl_channel_info *ch_info;
618
619         ch_info = iwl_get_channel_info(priv, band, channel);
620         if (!is_channel_valid(ch_info))
621                 return 0;
622
623         if (extension_chan_offset == IEEE80211_HT_PARAM_CHA_SEC_ABOVE)
624                 return !(ch_info->ht40_extension_channel &
625                                         IEEE80211_CHAN_NO_HT40PLUS);
626         else if (extension_chan_offset == IEEE80211_HT_PARAM_CHA_SEC_BELOW)
627                 return !(ch_info->ht40_extension_channel &
628                                         IEEE80211_CHAN_NO_HT40MINUS);
629
630         return 0;
631 }
632
633 u8 iwl_is_ht40_tx_allowed(struct iwl_priv *priv,
634                          struct ieee80211_sta_ht_cap *sta_ht_inf)
635 {
636         struct iwl_ht_config *ht_conf = &priv->current_ht_config;
637
638         if (!ht_conf->is_ht || !ht_conf->is_40mhz)
639                 return 0;
640
641         /* We do not check for IEEE80211_HT_CAP_SUP_WIDTH_20_40
642          * the bit will not set if it is pure 40MHz case
643          */
644         if (sta_ht_inf) {
645                 if (!sta_ht_inf->ht_supported)
646                         return 0;
647         }
648 #ifdef CONFIG_IWLWIFI_DEBUG
649         if (priv->disable_ht40)
650                 return 0;
651 #endif
652         return iwl_is_channel_extension(priv, priv->band,
653                         le16_to_cpu(priv->staging_rxon.channel),
654                         ht_conf->extension_chan_offset);
655 }
656 EXPORT_SYMBOL(iwl_is_ht40_tx_allowed);
657
658 static u16 iwl_adjust_beacon_interval(u16 beacon_val, u16 max_beacon_val)
659 {
660         u16 new_val = 0;
661         u16 beacon_factor = 0;
662
663         beacon_factor = (beacon_val + max_beacon_val) / max_beacon_val;
664         new_val = beacon_val / beacon_factor;
665
666         if (!new_val)
667                 new_val = max_beacon_val;
668
669         return new_val;
670 }
671
672 void iwl_setup_rxon_timing(struct iwl_priv *priv)
673 {
674         u64 tsf;
675         s32 interval_tm, rem;
676         unsigned long flags;
677         struct ieee80211_conf *conf = NULL;
678         u16 beacon_int;
679
680         conf = ieee80211_get_hw_conf(priv->hw);
681
682         spin_lock_irqsave(&priv->lock, flags);
683         priv->rxon_timing.timestamp = cpu_to_le64(priv->timestamp);
684         priv->rxon_timing.listen_interval = cpu_to_le16(conf->listen_interval);
685
686         if (priv->iw_mode == NL80211_IFTYPE_STATION) {
687                 beacon_int = priv->beacon_int;
688                 priv->rxon_timing.atim_window = 0;
689         } else {
690                 beacon_int = priv->vif->bss_conf.beacon_int;
691
692                 /* TODO: we need to get atim_window from upper stack
693                  * for now we set to 0 */
694                 priv->rxon_timing.atim_window = 0;
695         }
696
697         beacon_int = iwl_adjust_beacon_interval(beacon_int,
698                                 priv->hw_params.max_beacon_itrvl * 1024);
699         priv->rxon_timing.beacon_interval = cpu_to_le16(beacon_int);
700
701         tsf = priv->timestamp; /* tsf is modifed by do_div: copy it */
702         interval_tm = beacon_int * 1024;
703         rem = do_div(tsf, interval_tm);
704         priv->rxon_timing.beacon_init_val = cpu_to_le32(interval_tm - rem);
705
706         spin_unlock_irqrestore(&priv->lock, flags);
707         IWL_DEBUG_ASSOC(priv,
708                         "beacon interval %d beacon timer %d beacon tim %d\n",
709                         le16_to_cpu(priv->rxon_timing.beacon_interval),
710                         le32_to_cpu(priv->rxon_timing.beacon_init_val),
711                         le16_to_cpu(priv->rxon_timing.atim_window));
712 }
713 EXPORT_SYMBOL(iwl_setup_rxon_timing);
714
715 void iwl_set_rxon_hwcrypto(struct iwl_priv *priv, int hw_decrypt)
716 {
717         struct iwl_rxon_cmd *rxon = &priv->staging_rxon;
718
719         if (hw_decrypt)
720                 rxon->filter_flags &= ~RXON_FILTER_DIS_DECRYPT_MSK;
721         else
722                 rxon->filter_flags |= RXON_FILTER_DIS_DECRYPT_MSK;
723
724 }
725 EXPORT_SYMBOL(iwl_set_rxon_hwcrypto);
726
727 /**
728  * iwl_check_rxon_cmd - validate RXON structure is valid
729  *
730  * NOTE:  This is really only useful during development and can eventually
731  * be #ifdef'd out once the driver is stable and folks aren't actively
732  * making changes
733  */
734 int iwl_check_rxon_cmd(struct iwl_priv *priv)
735 {
736         int error = 0;
737         int counter = 1;
738         struct iwl_rxon_cmd *rxon = &priv->staging_rxon;
739
740         if (rxon->flags & RXON_FLG_BAND_24G_MSK) {
741                 error |= le32_to_cpu(rxon->flags &
742                                 (RXON_FLG_TGJ_NARROW_BAND_MSK |
743                                  RXON_FLG_RADAR_DETECT_MSK));
744                 if (error)
745                         IWL_WARN(priv, "check 24G fields %d | %d\n",
746                                     counter++, error);
747         } else {
748                 error |= (rxon->flags & RXON_FLG_SHORT_SLOT_MSK) ?
749                                 0 : le32_to_cpu(RXON_FLG_SHORT_SLOT_MSK);
750                 if (error)
751                         IWL_WARN(priv, "check 52 fields %d | %d\n",
752                                     counter++, error);
753                 error |= le32_to_cpu(rxon->flags & RXON_FLG_CCK_MSK);
754                 if (error)
755                         IWL_WARN(priv, "check 52 CCK %d | %d\n",
756                                     counter++, error);
757         }
758         error |= (rxon->node_addr[0] | rxon->bssid_addr[0]) & 0x1;
759         if (error)
760                 IWL_WARN(priv, "check mac addr %d | %d\n", counter++, error);
761
762         /* make sure basic rates 6Mbps and 1Mbps are supported */
763         error |= (((rxon->ofdm_basic_rates & IWL_RATE_6M_MASK) == 0) &&
764                   ((rxon->cck_basic_rates & IWL_RATE_1M_MASK) == 0));
765         if (error)
766                 IWL_WARN(priv, "check basic rate %d | %d\n", counter++, error);
767
768         error |= (le16_to_cpu(rxon->assoc_id) > 2007);
769         if (error)
770                 IWL_WARN(priv, "check assoc id %d | %d\n", counter++, error);
771
772         error |= ((rxon->flags & (RXON_FLG_CCK_MSK | RXON_FLG_SHORT_SLOT_MSK))
773                         == (RXON_FLG_CCK_MSK | RXON_FLG_SHORT_SLOT_MSK));
774         if (error)
775                 IWL_WARN(priv, "check CCK and short slot %d | %d\n",
776                             counter++, error);
777
778         error |= ((rxon->flags & (RXON_FLG_CCK_MSK | RXON_FLG_AUTO_DETECT_MSK))
779                         == (RXON_FLG_CCK_MSK | RXON_FLG_AUTO_DETECT_MSK));
780         if (error)
781                 IWL_WARN(priv, "check CCK & auto detect %d | %d\n",
782                             counter++, error);
783
784         error |= ((rxon->flags & (RXON_FLG_AUTO_DETECT_MSK |
785                         RXON_FLG_TGG_PROTECT_MSK)) == RXON_FLG_TGG_PROTECT_MSK);
786         if (error)
787                 IWL_WARN(priv, "check TGG and auto detect %d | %d\n",
788                             counter++, error);
789
790         if (error)
791                 IWL_WARN(priv, "Tuning to channel %d\n",
792                             le16_to_cpu(rxon->channel));
793
794         if (error) {
795                 IWL_ERR(priv, "Not a valid iwl_rxon_assoc_cmd field values\n");
796                 return -1;
797         }
798         return 0;
799 }
800 EXPORT_SYMBOL(iwl_check_rxon_cmd);
801
802 /**
803  * iwl_full_rxon_required - check if full RXON (vs RXON_ASSOC) cmd is needed
804  * @priv: staging_rxon is compared to active_rxon
805  *
806  * If the RXON structure is changing enough to require a new tune,
807  * or is clearing the RXON_FILTER_ASSOC_MSK, then return 1 to indicate that
808  * a new tune (full RXON command, rather than RXON_ASSOC cmd) is required.
809  */
810 int iwl_full_rxon_required(struct iwl_priv *priv)
811 {
812
813         /* These items are only settable from the full RXON command */
814         if (!(iwl_is_associated(priv)) ||
815             compare_ether_addr(priv->staging_rxon.bssid_addr,
816                                priv->active_rxon.bssid_addr) ||
817             compare_ether_addr(priv->staging_rxon.node_addr,
818                                priv->active_rxon.node_addr) ||
819             compare_ether_addr(priv->staging_rxon.wlap_bssid_addr,
820                                priv->active_rxon.wlap_bssid_addr) ||
821             (priv->staging_rxon.dev_type != priv->active_rxon.dev_type) ||
822             (priv->staging_rxon.channel != priv->active_rxon.channel) ||
823             (priv->staging_rxon.air_propagation !=
824              priv->active_rxon.air_propagation) ||
825             (priv->staging_rxon.ofdm_ht_single_stream_basic_rates !=
826              priv->active_rxon.ofdm_ht_single_stream_basic_rates) ||
827             (priv->staging_rxon.ofdm_ht_dual_stream_basic_rates !=
828              priv->active_rxon.ofdm_ht_dual_stream_basic_rates) ||
829             (priv->staging_rxon.ofdm_ht_triple_stream_basic_rates !=
830              priv->active_rxon.ofdm_ht_triple_stream_basic_rates) ||
831             (priv->staging_rxon.assoc_id != priv->active_rxon.assoc_id))
832                 return 1;
833
834         /* flags, filter_flags, ofdm_basic_rates, and cck_basic_rates can
835          * be updated with the RXON_ASSOC command -- however only some
836          * flag transitions are allowed using RXON_ASSOC */
837
838         /* Check if we are not switching bands */
839         if ((priv->staging_rxon.flags & RXON_FLG_BAND_24G_MSK) !=
840             (priv->active_rxon.flags & RXON_FLG_BAND_24G_MSK))
841                 return 1;
842
843         /* Check if we are switching association toggle */
844         if ((priv->staging_rxon.filter_flags & RXON_FILTER_ASSOC_MSK) !=
845                 (priv->active_rxon.filter_flags & RXON_FILTER_ASSOC_MSK))
846                 return 1;
847
848         return 0;
849 }
850 EXPORT_SYMBOL(iwl_full_rxon_required);
851
852 u8 iwl_rate_get_lowest_plcp(struct iwl_priv *priv)
853 {
854         int i;
855         int rate_mask;
856
857         /* Set rate mask*/
858         if (priv->staging_rxon.flags & RXON_FLG_BAND_24G_MSK)
859                 rate_mask = priv->active_rate_basic & IWL_CCK_RATES_MASK;
860         else
861                 rate_mask = priv->active_rate_basic & IWL_OFDM_RATES_MASK;
862
863         /* Find lowest valid rate */
864         for (i = IWL_RATE_1M_INDEX; i != IWL_RATE_INVALID;
865                                         i = iwl_rates[i].next_ieee) {
866                 if (rate_mask & (1 << i))
867                         return iwl_rates[i].plcp;
868         }
869
870         /* No valid rate was found. Assign the lowest one */
871         if (priv->staging_rxon.flags & RXON_FLG_BAND_24G_MSK)
872                 return IWL_RATE_1M_PLCP;
873         else
874                 return IWL_RATE_6M_PLCP;
875 }
876 EXPORT_SYMBOL(iwl_rate_get_lowest_plcp);
877
878 void iwl_set_rxon_ht(struct iwl_priv *priv, struct iwl_ht_config *ht_conf)
879 {
880         struct iwl_rxon_cmd *rxon = &priv->staging_rxon;
881
882         if (!ht_conf->is_ht) {
883                 rxon->flags &= ~(RXON_FLG_CHANNEL_MODE_MSK |
884                         RXON_FLG_CTRL_CHANNEL_LOC_HI_MSK |
885                         RXON_FLG_HT40_PROT_MSK |
886                         RXON_FLG_HT_PROT_MSK);
887                 return;
888         }
889
890         /* FIXME: if the definition of ht_protection changed, the "translation"
891          * will be needed for rxon->flags
892          */
893         rxon->flags |= cpu_to_le32(ht_conf->ht_protection << RXON_FLG_HT_OPERATING_MODE_POS);
894
895         /* Set up channel bandwidth:
896          * 20 MHz only, 20/40 mixed or pure 40 if ht40 ok */
897         /* clear the HT channel mode before set the mode */
898         rxon->flags &= ~(RXON_FLG_CHANNEL_MODE_MSK |
899                          RXON_FLG_CTRL_CHANNEL_LOC_HI_MSK);
900         if (iwl_is_ht40_tx_allowed(priv, NULL)) {
901                 /* pure ht40 */
902                 if (ht_conf->ht_protection == IEEE80211_HT_OP_MODE_PROTECTION_20MHZ) {
903                         rxon->flags |= RXON_FLG_CHANNEL_MODE_PURE_40;
904                         /* Note: control channel is opposite of extension channel */
905                         switch (ht_conf->extension_chan_offset) {
906                         case IEEE80211_HT_PARAM_CHA_SEC_ABOVE:
907                                 rxon->flags &= ~RXON_FLG_CTRL_CHANNEL_LOC_HI_MSK;
908                                 break;
909                         case IEEE80211_HT_PARAM_CHA_SEC_BELOW:
910                                 rxon->flags |= RXON_FLG_CTRL_CHANNEL_LOC_HI_MSK;
911                                 break;
912                         }
913                 } else {
914                         /* Note: control channel is opposite of extension channel */
915                         switch (ht_conf->extension_chan_offset) {
916                         case IEEE80211_HT_PARAM_CHA_SEC_ABOVE:
917                                 rxon->flags &= ~(RXON_FLG_CTRL_CHANNEL_LOC_HI_MSK);
918                                 rxon->flags |= RXON_FLG_CHANNEL_MODE_MIXED;
919                                 break;
920                         case IEEE80211_HT_PARAM_CHA_SEC_BELOW:
921                                 rxon->flags |= RXON_FLG_CTRL_CHANNEL_LOC_HI_MSK;
922                                 rxon->flags |= RXON_FLG_CHANNEL_MODE_MIXED;
923                                 break;
924                         case IEEE80211_HT_PARAM_CHA_SEC_NONE:
925                         default:
926                                 /* channel location only valid if in Mixed mode */
927                                 IWL_ERR(priv, "invalid extension channel offset\n");
928                                 break;
929                         }
930                 }
931         } else {
932                 rxon->flags |= RXON_FLG_CHANNEL_MODE_LEGACY;
933         }
934
935         if (priv->cfg->ops->hcmd->set_rxon_chain)
936                 priv->cfg->ops->hcmd->set_rxon_chain(priv);
937
938         IWL_DEBUG_ASSOC(priv, "rxon flags 0x%X operation mode :0x%X "
939                         "extension channel offset 0x%x\n",
940                         le32_to_cpu(rxon->flags), ht_conf->ht_protection,
941                         ht_conf->extension_chan_offset);
942         return;
943 }
944 EXPORT_SYMBOL(iwl_set_rxon_ht);
945
946 #define IWL_NUM_RX_CHAINS_MULTIPLE      3
947 #define IWL_NUM_RX_CHAINS_SINGLE        2
948 #define IWL_NUM_IDLE_CHAINS_DUAL        2
949 #define IWL_NUM_IDLE_CHAINS_SINGLE      1
950
951 /*
952  * Determine how many receiver/antenna chains to use.
953  *
954  * More provides better reception via diversity.  Fewer saves power
955  * at the expense of throughput, but only when not in powersave to
956  * start with.
957  *
958  * MIMO (dual stream) requires at least 2, but works better with 3.
959  * This does not determine *which* chains to use, just how many.
960  */
961 static int iwl_get_active_rx_chain_count(struct iwl_priv *priv)
962 {
963         /* # of Rx chains to use when expecting MIMO. */
964         if (is_single_rx_stream(priv))
965                 return IWL_NUM_RX_CHAINS_SINGLE;
966         else
967                 return IWL_NUM_RX_CHAINS_MULTIPLE;
968 }
969
970 /*
971  * When we are in power saving, there's no difference between
972  * using multiple chains or just a single chain, but due to the
973  * lack of SM PS we lose a lot of throughput if we use just a
974  * single chain.
975  *
976  * Therefore, use the active count here (which will use multiple
977  * chains unless connected to a legacy AP).
978  */
979 static int iwl_get_idle_rx_chain_count(struct iwl_priv *priv, int active_cnt)
980 {
981         return active_cnt;
982 }
983
984 /* up to 4 chains */
985 static u8 iwl_count_chain_bitmap(u32 chain_bitmap)
986 {
987         u8 res;
988         res = (chain_bitmap & BIT(0)) >> 0;
989         res += (chain_bitmap & BIT(1)) >> 1;
990         res += (chain_bitmap & BIT(2)) >> 2;
991         res += (chain_bitmap & BIT(3)) >> 3;
992         return res;
993 }
994
995 /**
996  * iwl_is_monitor_mode - Determine if interface in monitor mode
997  *
998  * priv->iw_mode is set in add_interface, but add_interface is
999  * never called for monitor mode. The only way mac80211 informs us about
1000  * monitor mode is through configuring filters (call to configure_filter).
1001  */
1002 bool iwl_is_monitor_mode(struct iwl_priv *priv)
1003 {
1004         return !!(priv->staging_rxon.filter_flags & RXON_FILTER_PROMISC_MSK);
1005 }
1006 EXPORT_SYMBOL(iwl_is_monitor_mode);
1007
1008 /**
1009  * iwl_set_rxon_chain - Set up Rx chain usage in "staging" RXON image
1010  *
1011  * Selects how many and which Rx receivers/antennas/chains to use.
1012  * This should not be used for scan command ... it puts data in wrong place.
1013  */
1014 void iwl_set_rxon_chain(struct iwl_priv *priv)
1015 {
1016         bool is_single = is_single_rx_stream(priv);
1017         bool is_cam = !test_bit(STATUS_POWER_PMI, &priv->status);
1018         u8 idle_rx_cnt, active_rx_cnt, valid_rx_cnt;
1019         u32 active_chains;
1020         u16 rx_chain;
1021
1022         /* Tell uCode which antennas are actually connected.
1023          * Before first association, we assume all antennas are connected.
1024          * Just after first association, iwl_chain_noise_calibration()
1025          *    checks which antennas actually *are* connected. */
1026          if (priv->chain_noise_data.active_chains)
1027                 active_chains = priv->chain_noise_data.active_chains;
1028         else
1029                 active_chains = priv->hw_params.valid_rx_ant;
1030
1031         rx_chain = active_chains << RXON_RX_CHAIN_VALID_POS;
1032
1033         /* How many receivers should we use? */
1034         active_rx_cnt = iwl_get_active_rx_chain_count(priv);
1035         idle_rx_cnt = iwl_get_idle_rx_chain_count(priv, active_rx_cnt);
1036
1037
1038         /* correct rx chain count according hw settings
1039          * and chain noise calibration
1040          */
1041         valid_rx_cnt = iwl_count_chain_bitmap(active_chains);
1042         if (valid_rx_cnt < active_rx_cnt)
1043                 active_rx_cnt = valid_rx_cnt;
1044
1045         if (valid_rx_cnt < idle_rx_cnt)
1046                 idle_rx_cnt = valid_rx_cnt;
1047
1048         rx_chain |= active_rx_cnt << RXON_RX_CHAIN_MIMO_CNT_POS;
1049         rx_chain |= idle_rx_cnt  << RXON_RX_CHAIN_CNT_POS;
1050
1051         /* copied from 'iwl_bg_request_scan()' */
1052         /* Force use of chains B and C (0x6) for Rx for 4965
1053          * Avoid A (0x1) because of its off-channel reception on A-band.
1054          * MIMO is not used here, but value is required */
1055         if (iwl_is_monitor_mode(priv) &&
1056             !(priv->staging_rxon.flags & RXON_FLG_BAND_24G_MSK) &&
1057             ((priv->hw_rev & CSR_HW_REV_TYPE_MSK) == CSR_HW_REV_TYPE_4965)) {
1058                 rx_chain = ANT_ABC << RXON_RX_CHAIN_VALID_POS;
1059                 rx_chain |= ANT_BC << RXON_RX_CHAIN_FORCE_SEL_POS;
1060                 rx_chain |= ANT_ABC << RXON_RX_CHAIN_FORCE_MIMO_SEL_POS;
1061                 rx_chain |= 0x1 << RXON_RX_CHAIN_DRIVER_FORCE_POS;
1062         }
1063
1064         priv->staging_rxon.rx_chain = cpu_to_le16(rx_chain);
1065
1066         if (!is_single && (active_rx_cnt >= IWL_NUM_RX_CHAINS_SINGLE) && is_cam)
1067                 priv->staging_rxon.rx_chain |= RXON_RX_CHAIN_MIMO_FORCE_MSK;
1068         else
1069                 priv->staging_rxon.rx_chain &= ~RXON_RX_CHAIN_MIMO_FORCE_MSK;
1070
1071         IWL_DEBUG_ASSOC(priv, "rx_chain=0x%X active=%d idle=%d\n",
1072                         priv->staging_rxon.rx_chain,
1073                         active_rx_cnt, idle_rx_cnt);
1074
1075         WARN_ON(active_rx_cnt == 0 || idle_rx_cnt == 0 ||
1076                 active_rx_cnt < idle_rx_cnt);
1077 }
1078 EXPORT_SYMBOL(iwl_set_rxon_chain);
1079
1080 /**
1081  * iwl_set_rxon_channel - Set the phymode and channel values in staging RXON
1082  * @phymode: MODE_IEEE80211A sets to 5.2GHz; all else set to 2.4GHz
1083  * @channel: Any channel valid for the requested phymode
1084
1085  * In addition to setting the staging RXON, priv->phymode is also set.
1086  *
1087  * NOTE:  Does not commit to the hardware; it sets appropriate bit fields
1088  * in the staging RXON flag structure based on the phymode
1089  */
1090 int iwl_set_rxon_channel(struct iwl_priv *priv, struct ieee80211_channel *ch)
1091 {
1092         enum ieee80211_band band = ch->band;
1093         u16 channel = ieee80211_frequency_to_channel(ch->center_freq);
1094
1095         if (!iwl_get_channel_info(priv, band, channel)) {
1096                 IWL_DEBUG_INFO(priv, "Could not set channel to %d [%d]\n",
1097                                channel, band);
1098                 return -EINVAL;
1099         }
1100
1101         if ((le16_to_cpu(priv->staging_rxon.channel) == channel) &&
1102             (priv->band == band))
1103                 return 0;
1104
1105         priv->staging_rxon.channel = cpu_to_le16(channel);
1106         if (band == IEEE80211_BAND_5GHZ)
1107                 priv->staging_rxon.flags &= ~RXON_FLG_BAND_24G_MSK;
1108         else
1109                 priv->staging_rxon.flags |= RXON_FLG_BAND_24G_MSK;
1110
1111         priv->band = band;
1112
1113         IWL_DEBUG_INFO(priv, "Staging channel set to %d [%d]\n", channel, band);
1114
1115         return 0;
1116 }
1117 EXPORT_SYMBOL(iwl_set_rxon_channel);
1118
1119 void iwl_set_flags_for_band(struct iwl_priv *priv,
1120                             enum ieee80211_band band)
1121 {
1122         if (band == IEEE80211_BAND_5GHZ) {
1123                 priv->staging_rxon.flags &=
1124                     ~(RXON_FLG_BAND_24G_MSK | RXON_FLG_AUTO_DETECT_MSK
1125                       | RXON_FLG_CCK_MSK);
1126                 priv->staging_rxon.flags |= RXON_FLG_SHORT_SLOT_MSK;
1127         } else {
1128                 /* Copied from iwl_post_associate() */
1129                 if (priv->assoc_capability & WLAN_CAPABILITY_SHORT_SLOT_TIME)
1130                         priv->staging_rxon.flags |= RXON_FLG_SHORT_SLOT_MSK;
1131                 else
1132                         priv->staging_rxon.flags &= ~RXON_FLG_SHORT_SLOT_MSK;
1133
1134                 if (priv->iw_mode == NL80211_IFTYPE_ADHOC)
1135                         priv->staging_rxon.flags &= ~RXON_FLG_SHORT_SLOT_MSK;
1136
1137                 priv->staging_rxon.flags |= RXON_FLG_BAND_24G_MSK;
1138                 priv->staging_rxon.flags |= RXON_FLG_AUTO_DETECT_MSK;
1139                 priv->staging_rxon.flags &= ~RXON_FLG_CCK_MSK;
1140         }
1141 }
1142
1143 /*
1144  * initialize rxon structure with default values from eeprom
1145  */
1146 void iwl_connection_init_rx_config(struct iwl_priv *priv, int mode)
1147 {
1148         const struct iwl_channel_info *ch_info;
1149
1150         memset(&priv->staging_rxon, 0, sizeof(priv->staging_rxon));
1151
1152         switch (mode) {
1153         case NL80211_IFTYPE_AP:
1154                 priv->staging_rxon.dev_type = RXON_DEV_TYPE_AP;
1155                 break;
1156
1157         case NL80211_IFTYPE_STATION:
1158                 priv->staging_rxon.dev_type = RXON_DEV_TYPE_ESS;
1159                 priv->staging_rxon.filter_flags = RXON_FILTER_ACCEPT_GRP_MSK;
1160                 break;
1161
1162         case NL80211_IFTYPE_ADHOC:
1163                 priv->staging_rxon.dev_type = RXON_DEV_TYPE_IBSS;
1164                 priv->staging_rxon.flags = RXON_FLG_SHORT_PREAMBLE_MSK;
1165                 priv->staging_rxon.filter_flags = RXON_FILTER_BCON_AWARE_MSK |
1166                                                   RXON_FILTER_ACCEPT_GRP_MSK;
1167                 break;
1168
1169         default:
1170                 IWL_ERR(priv, "Unsupported interface type %d\n", mode);
1171                 break;
1172         }
1173
1174 #if 0
1175         /* TODO:  Figure out when short_preamble would be set and cache from
1176          * that */
1177         if (!hw_to_local(priv->hw)->short_preamble)
1178                 priv->staging_rxon.flags &= ~RXON_FLG_SHORT_PREAMBLE_MSK;
1179         else
1180                 priv->staging_rxon.flags |= RXON_FLG_SHORT_PREAMBLE_MSK;
1181 #endif
1182
1183         ch_info = iwl_get_channel_info(priv, priv->band,
1184                                        le16_to_cpu(priv->active_rxon.channel));
1185
1186         if (!ch_info)
1187                 ch_info = &priv->channel_info[0];
1188
1189         /*
1190          * in some case A channels are all non IBSS
1191          * in this case force B/G channel
1192          */
1193         if ((priv->iw_mode == NL80211_IFTYPE_ADHOC) &&
1194             !(is_channel_ibss(ch_info)))
1195                 ch_info = &priv->channel_info[0];
1196
1197         priv->staging_rxon.channel = cpu_to_le16(ch_info->channel);
1198         priv->band = ch_info->band;
1199
1200         iwl_set_flags_for_band(priv, priv->band);
1201
1202         priv->staging_rxon.ofdm_basic_rates =
1203             (IWL_OFDM_RATES_MASK >> IWL_FIRST_OFDM_RATE) & 0xFF;
1204         priv->staging_rxon.cck_basic_rates =
1205             (IWL_CCK_RATES_MASK >> IWL_FIRST_CCK_RATE) & 0xF;
1206
1207         /* clear both MIX and PURE40 mode flag */
1208         priv->staging_rxon.flags &= ~(RXON_FLG_CHANNEL_MODE_MIXED |
1209                                         RXON_FLG_CHANNEL_MODE_PURE_40);
1210         memcpy(priv->staging_rxon.node_addr, priv->mac_addr, ETH_ALEN);
1211         memcpy(priv->staging_rxon.wlap_bssid_addr, priv->mac_addr, ETH_ALEN);
1212         priv->staging_rxon.ofdm_ht_single_stream_basic_rates = 0xff;
1213         priv->staging_rxon.ofdm_ht_dual_stream_basic_rates = 0xff;
1214         priv->staging_rxon.ofdm_ht_triple_stream_basic_rates = 0xff;
1215 }
1216 EXPORT_SYMBOL(iwl_connection_init_rx_config);
1217
1218 static void iwl_set_rate(struct iwl_priv *priv)
1219 {
1220         const struct ieee80211_supported_band *hw = NULL;
1221         struct ieee80211_rate *rate;
1222         int i;
1223
1224         hw = iwl_get_hw_mode(priv, priv->band);
1225         if (!hw) {
1226                 IWL_ERR(priv, "Failed to set rate: unable to get hw mode\n");
1227                 return;
1228         }
1229
1230         priv->active_rate = 0;
1231         priv->active_rate_basic = 0;
1232
1233         for (i = 0; i < hw->n_bitrates; i++) {
1234                 rate = &(hw->bitrates[i]);
1235                 if (rate->hw_value < IWL_RATE_COUNT_LEGACY)
1236                         priv->active_rate |= (1 << rate->hw_value);
1237         }
1238
1239         IWL_DEBUG_RATE(priv, "Set active_rate = %0x, active_rate_basic = %0x\n",
1240                        priv->active_rate, priv->active_rate_basic);
1241
1242         /*
1243          * If a basic rate is configured, then use it (adding IWL_RATE_1M_MASK)
1244          * otherwise set it to the default of all CCK rates and 6, 12, 24 for
1245          * OFDM
1246          */
1247         if (priv->active_rate_basic & IWL_CCK_BASIC_RATES_MASK)
1248                 priv->staging_rxon.cck_basic_rates =
1249                     ((priv->active_rate_basic &
1250                       IWL_CCK_RATES_MASK) >> IWL_FIRST_CCK_RATE) & 0xF;
1251         else
1252                 priv->staging_rxon.cck_basic_rates =
1253                     (IWL_CCK_BASIC_RATES_MASK >> IWL_FIRST_CCK_RATE) & 0xF;
1254
1255         if (priv->active_rate_basic & IWL_OFDM_BASIC_RATES_MASK)
1256                 priv->staging_rxon.ofdm_basic_rates =
1257                     ((priv->active_rate_basic &
1258                       (IWL_OFDM_BASIC_RATES_MASK | IWL_RATE_6M_MASK)) >>
1259                       IWL_FIRST_OFDM_RATE) & 0xFF;
1260         else
1261                 priv->staging_rxon.ofdm_basic_rates =
1262                    (IWL_OFDM_BASIC_RATES_MASK >> IWL_FIRST_OFDM_RATE) & 0xFF;
1263 }
1264
1265 void iwl_rx_csa(struct iwl_priv *priv, struct iwl_rx_mem_buffer *rxb)
1266 {
1267         struct iwl_rx_packet *pkt = (struct iwl_rx_packet *)rxb->skb->data;
1268         struct iwl_rxon_cmd *rxon = (void *)&priv->active_rxon;
1269         struct iwl_csa_notification *csa = &(pkt->u.csa_notif);
1270         IWL_DEBUG_11H(priv, "CSA notif: channel %d, status %d\n",
1271                       le16_to_cpu(csa->channel), le32_to_cpu(csa->status));
1272         rxon->channel = csa->channel;
1273         priv->staging_rxon.channel = csa->channel;
1274 }
1275 EXPORT_SYMBOL(iwl_rx_csa);
1276
1277 #ifdef CONFIG_IWLWIFI_DEBUG
1278 static void iwl_print_rx_config_cmd(struct iwl_priv *priv)
1279 {
1280         struct iwl_rxon_cmd *rxon = &priv->staging_rxon;
1281
1282         IWL_DEBUG_RADIO(priv, "RX CONFIG:\n");
1283         iwl_print_hex_dump(priv, IWL_DL_RADIO, (u8 *) rxon, sizeof(*rxon));
1284         IWL_DEBUG_RADIO(priv, "u16 channel: 0x%x\n", le16_to_cpu(rxon->channel));
1285         IWL_DEBUG_RADIO(priv, "u32 flags: 0x%08X\n", le32_to_cpu(rxon->flags));
1286         IWL_DEBUG_RADIO(priv, "u32 filter_flags: 0x%08x\n",
1287                         le32_to_cpu(rxon->filter_flags));
1288         IWL_DEBUG_RADIO(priv, "u8 dev_type: 0x%x\n", rxon->dev_type);
1289         IWL_DEBUG_RADIO(priv, "u8 ofdm_basic_rates: 0x%02x\n",
1290                         rxon->ofdm_basic_rates);
1291         IWL_DEBUG_RADIO(priv, "u8 cck_basic_rates: 0x%02x\n", rxon->cck_basic_rates);
1292         IWL_DEBUG_RADIO(priv, "u8[6] node_addr: %pM\n", rxon->node_addr);
1293         IWL_DEBUG_RADIO(priv, "u8[6] bssid_addr: %pM\n", rxon->bssid_addr);
1294         IWL_DEBUG_RADIO(priv, "u16 assoc_id: 0x%x\n", le16_to_cpu(rxon->assoc_id));
1295 }
1296 #endif
1297 /**
1298  * iwl_irq_handle_error - called for HW or SW error interrupt from card
1299  */
1300 void iwl_irq_handle_error(struct iwl_priv *priv)
1301 {
1302         /* Set the FW error flag -- cleared on iwl_down */
1303         set_bit(STATUS_FW_ERROR, &priv->status);
1304
1305         /* Cancel currently queued command. */
1306         clear_bit(STATUS_HCMD_ACTIVE, &priv->status);
1307
1308 #ifdef CONFIG_IWLWIFI_DEBUG
1309         if (iwl_get_debug_level(priv) & IWL_DL_FW_ERRORS) {
1310                 priv->cfg->ops->lib->dump_nic_error_log(priv);
1311                 priv->cfg->ops->lib->dump_nic_event_log(priv);
1312                 iwl_print_rx_config_cmd(priv);
1313         }
1314 #endif
1315
1316         wake_up_interruptible(&priv->wait_command_queue);
1317
1318         /* Keep the restart process from trying to send host
1319          * commands by clearing the INIT status bit */
1320         clear_bit(STATUS_READY, &priv->status);
1321
1322         if (!test_bit(STATUS_EXIT_PENDING, &priv->status)) {
1323                 IWL_DEBUG(priv, IWL_DL_FW_ERRORS,
1324                           "Restarting adapter due to uCode error.\n");
1325
1326                 if (priv->cfg->mod_params->restart_fw)
1327                         queue_work(priv->workqueue, &priv->restart);
1328         }
1329 }
1330 EXPORT_SYMBOL(iwl_irq_handle_error);
1331
1332 void iwl_configure_filter(struct ieee80211_hw *hw,
1333                           unsigned int changed_flags,
1334                           unsigned int *total_flags,
1335                           u64 multicast)
1336 {
1337         struct iwl_priv *priv = hw->priv;
1338         __le32 *filter_flags = &priv->staging_rxon.filter_flags;
1339
1340         IWL_DEBUG_MAC80211(priv, "Enter: changed: 0x%x, total: 0x%x\n",
1341                         changed_flags, *total_flags);
1342
1343         if (changed_flags & (FIF_OTHER_BSS | FIF_PROMISC_IN_BSS)) {
1344                 if (*total_flags & (FIF_OTHER_BSS | FIF_PROMISC_IN_BSS))
1345                         *filter_flags |= RXON_FILTER_PROMISC_MSK;
1346                 else
1347                         *filter_flags &= ~RXON_FILTER_PROMISC_MSK;
1348         }
1349         if (changed_flags & FIF_ALLMULTI) {
1350                 if (*total_flags & FIF_ALLMULTI)
1351                         *filter_flags |= RXON_FILTER_ACCEPT_GRP_MSK;
1352                 else
1353                         *filter_flags &= ~RXON_FILTER_ACCEPT_GRP_MSK;
1354         }
1355         if (changed_flags & FIF_CONTROL) {
1356                 if (*total_flags & FIF_CONTROL)
1357                         *filter_flags |= RXON_FILTER_CTL2HOST_MSK;
1358                 else
1359                         *filter_flags &= ~RXON_FILTER_CTL2HOST_MSK;
1360         }
1361         if (changed_flags & FIF_BCN_PRBRESP_PROMISC) {
1362                 if (*total_flags & FIF_BCN_PRBRESP_PROMISC)
1363                         *filter_flags |= RXON_FILTER_BCON_AWARE_MSK;
1364                 else
1365                         *filter_flags &= ~RXON_FILTER_BCON_AWARE_MSK;
1366         }
1367
1368         /* We avoid iwl_commit_rxon here to commit the new filter flags
1369          * since mac80211 will call ieee80211_hw_config immediately.
1370          * (mc_list is not supported at this time). Otherwise, we need to
1371          * queue a background iwl_commit_rxon work.
1372          */
1373
1374         *total_flags &= FIF_OTHER_BSS | FIF_ALLMULTI | FIF_PROMISC_IN_BSS |
1375                         FIF_BCN_PRBRESP_PROMISC | FIF_CONTROL;
1376 }
1377 EXPORT_SYMBOL(iwl_configure_filter);
1378
1379 int iwl_setup_mac(struct iwl_priv *priv)
1380 {
1381         int ret;
1382         struct ieee80211_hw *hw = priv->hw;
1383         hw->rate_control_algorithm = "iwl-agn-rs";
1384
1385         /* Tell mac80211 our characteristics */
1386         hw->flags = IEEE80211_HW_SIGNAL_DBM |
1387                     IEEE80211_HW_NOISE_DBM |
1388                     IEEE80211_HW_AMPDU_AGGREGATION |
1389                     IEEE80211_HW_SPECTRUM_MGMT;
1390
1391         if (!priv->cfg->broken_powersave)
1392                 hw->flags |= IEEE80211_HW_SUPPORTS_PS |
1393                              IEEE80211_HW_SUPPORTS_DYNAMIC_PS;
1394
1395         hw->wiphy->interface_modes =
1396                 BIT(NL80211_IFTYPE_STATION) |
1397                 BIT(NL80211_IFTYPE_ADHOC);
1398
1399         hw->wiphy->custom_regulatory = true;
1400
1401         /* Firmware does not support this */
1402         hw->wiphy->disable_beacon_hints = true;
1403
1404         /*
1405          * For now, disable PS by default because it affects
1406          * RX performance significantly.
1407          */
1408         hw->wiphy->ps_default = false;
1409
1410         hw->wiphy->max_scan_ssids = PROBE_OPTION_MAX;
1411         /* we create the 802.11 header and a zero-length SSID element */
1412         hw->wiphy->max_scan_ie_len = IWL_MAX_PROBE_REQUEST - 24 - 2;
1413
1414         /* Default value; 4 EDCA QOS priorities */
1415         hw->queues = 4;
1416
1417         hw->max_listen_interval = IWL_CONN_MAX_LISTEN_INTERVAL;
1418
1419         if (priv->bands[IEEE80211_BAND_2GHZ].n_channels)
1420                 priv->hw->wiphy->bands[IEEE80211_BAND_2GHZ] =
1421                         &priv->bands[IEEE80211_BAND_2GHZ];
1422         if (priv->bands[IEEE80211_BAND_5GHZ].n_channels)
1423                 priv->hw->wiphy->bands[IEEE80211_BAND_5GHZ] =
1424                         &priv->bands[IEEE80211_BAND_5GHZ];
1425
1426         ret = ieee80211_register_hw(priv->hw);
1427         if (ret) {
1428                 IWL_ERR(priv, "Failed to register hw (error %d)\n", ret);
1429                 return ret;
1430         }
1431         priv->mac80211_registered = 1;
1432
1433         return 0;
1434 }
1435 EXPORT_SYMBOL(iwl_setup_mac);
1436
1437 int iwl_set_hw_params(struct iwl_priv *priv)
1438 {
1439         priv->hw_params.max_rxq_size = RX_QUEUE_SIZE;
1440         priv->hw_params.max_rxq_log = RX_QUEUE_SIZE_LOG;
1441         if (priv->cfg->mod_params->amsdu_size_8K)
1442                 priv->hw_params.rx_buf_size = IWL_RX_BUF_SIZE_8K;
1443         else
1444                 priv->hw_params.rx_buf_size = IWL_RX_BUF_SIZE_4K;
1445         priv->hw_params.max_pkt_size = priv->hw_params.rx_buf_size - 256;
1446
1447         priv->hw_params.max_beacon_itrvl = IWL_MAX_UCODE_BEACON_INTERVAL;
1448
1449         if (priv->cfg->mod_params->disable_11n)
1450                 priv->cfg->sku &= ~IWL_SKU_N;
1451
1452         /* Device-specific setup */
1453         return priv->cfg->ops->lib->set_hw_params(priv);
1454 }
1455 EXPORT_SYMBOL(iwl_set_hw_params);
1456
1457 int iwl_init_drv(struct iwl_priv *priv)
1458 {
1459         int ret;
1460
1461         priv->ibss_beacon = NULL;
1462
1463         spin_lock_init(&priv->lock);
1464         spin_lock_init(&priv->sta_lock);
1465         spin_lock_init(&priv->hcmd_lock);
1466
1467         INIT_LIST_HEAD(&priv->free_frames);
1468
1469         mutex_init(&priv->mutex);
1470
1471         /* Clear the driver's (not device's) station table */
1472         iwl_clear_stations_table(priv);
1473
1474         priv->data_retry_limit = -1;
1475         priv->ieee_channels = NULL;
1476         priv->ieee_rates = NULL;
1477         priv->band = IEEE80211_BAND_2GHZ;
1478
1479         priv->iw_mode = NL80211_IFTYPE_STATION;
1480
1481         /* Choose which receivers/antennas to use */
1482         if (priv->cfg->ops->hcmd->set_rxon_chain)
1483                 priv->cfg->ops->hcmd->set_rxon_chain(priv);
1484
1485         iwl_init_scan_params(priv);
1486
1487         iwl_reset_qos(priv);
1488
1489         priv->qos_data.qos_active = 0;
1490         priv->qos_data.qos_cap.val = 0;
1491
1492         priv->rates_mask = IWL_RATES_MASK;
1493         /* Set the tx_power_user_lmt to the lowest power level
1494          * this value will get overwritten by channel max power avg
1495          * from eeprom */
1496         priv->tx_power_user_lmt = IWL_TX_POWER_TARGET_POWER_MIN;
1497
1498         ret = iwl_init_channel_map(priv);
1499         if (ret) {
1500                 IWL_ERR(priv, "initializing regulatory failed: %d\n", ret);
1501                 goto err;
1502         }
1503
1504         ret = iwlcore_init_geos(priv);
1505         if (ret) {
1506                 IWL_ERR(priv, "initializing geos failed: %d\n", ret);
1507                 goto err_free_channel_map;
1508         }
1509         iwlcore_init_hw_rates(priv, priv->ieee_rates);
1510
1511         return 0;
1512
1513 err_free_channel_map:
1514         iwl_free_channel_map(priv);
1515 err:
1516         return ret;
1517 }
1518 EXPORT_SYMBOL(iwl_init_drv);
1519
1520 int iwl_set_tx_power(struct iwl_priv *priv, s8 tx_power, bool force)
1521 {
1522         int ret = 0;
1523         s8 prev_tx_power = priv->tx_power_user_lmt;
1524
1525         if (tx_power < IWL_TX_POWER_TARGET_POWER_MIN) {
1526                 IWL_WARN(priv, "Requested user TXPOWER %d below lower limit %d.\n",
1527                          tx_power,
1528                          IWL_TX_POWER_TARGET_POWER_MIN);
1529                 return -EINVAL;
1530         }
1531
1532         if (tx_power > priv->tx_power_device_lmt) {
1533                 IWL_WARN(priv,
1534                         "Requested user TXPOWER %d above upper limit %d.\n",
1535                          tx_power, priv->tx_power_device_lmt);
1536                 return -EINVAL;
1537         }
1538
1539         if (priv->tx_power_user_lmt != tx_power)
1540                 force = true;
1541
1542         /* if nic is not up don't send command */
1543         if (iwl_is_ready_rf(priv)) {
1544                 priv->tx_power_user_lmt = tx_power;
1545                 if (force && priv->cfg->ops->lib->send_tx_power)
1546                         ret = priv->cfg->ops->lib->send_tx_power(priv);
1547                 else if (!priv->cfg->ops->lib->send_tx_power)
1548                         ret = -EOPNOTSUPP;
1549                 /*
1550                  * if fail to set tx_power, restore the orig. tx power
1551                  */
1552                 if (ret)
1553                         priv->tx_power_user_lmt = prev_tx_power;
1554         }
1555
1556         /*
1557          * Even this is an async host command, the command
1558          * will always report success from uCode
1559          * So once driver can placing the command into the queue
1560          * successfully, driver can use priv->tx_power_user_lmt
1561          * to reflect the current tx power
1562          */
1563         return ret;
1564 }
1565 EXPORT_SYMBOL(iwl_set_tx_power);
1566
1567 void iwl_uninit_drv(struct iwl_priv *priv)
1568 {
1569         iwl_calib_free_results(priv);
1570         iwlcore_free_geos(priv);
1571         iwl_free_channel_map(priv);
1572         kfree(priv->scan);
1573 }
1574 EXPORT_SYMBOL(iwl_uninit_drv);
1575
1576 #define ICT_COUNT (PAGE_SIZE/sizeof(u32))
1577
1578 /* Free dram table */
1579 void iwl_free_isr_ict(struct iwl_priv *priv)
1580 {
1581         if (priv->ict_tbl_vir) {
1582                 pci_free_consistent(priv->pci_dev, (sizeof(u32) * ICT_COUNT) +
1583                                         PAGE_SIZE, priv->ict_tbl_vir,
1584                                         priv->ict_tbl_dma);
1585                 priv->ict_tbl_vir = NULL;
1586         }
1587 }
1588 EXPORT_SYMBOL(iwl_free_isr_ict);
1589
1590
1591 /* allocate dram shared table it is a PAGE_SIZE aligned
1592  * also reset all data related to ICT table interrupt.
1593  */
1594 int iwl_alloc_isr_ict(struct iwl_priv *priv)
1595 {
1596
1597         if (priv->cfg->use_isr_legacy)
1598                 return 0;
1599         /* allocate shrared data table */
1600         priv->ict_tbl_vir = pci_alloc_consistent(priv->pci_dev, (sizeof(u32) *
1601                                                   ICT_COUNT) + PAGE_SIZE,
1602                                                   &priv->ict_tbl_dma);
1603         if (!priv->ict_tbl_vir)
1604                 return -ENOMEM;
1605
1606         /* align table to PAGE_SIZE boundry */
1607         priv->aligned_ict_tbl_dma = ALIGN(priv->ict_tbl_dma, PAGE_SIZE);
1608
1609         IWL_DEBUG_ISR(priv, "ict dma addr %Lx dma aligned %Lx diff %d\n",
1610                              (unsigned long long)priv->ict_tbl_dma,
1611                              (unsigned long long)priv->aligned_ict_tbl_dma,
1612                         (int)(priv->aligned_ict_tbl_dma - priv->ict_tbl_dma));
1613
1614         priv->ict_tbl =  priv->ict_tbl_vir +
1615                           (priv->aligned_ict_tbl_dma - priv->ict_tbl_dma);
1616
1617         IWL_DEBUG_ISR(priv, "ict vir addr %p vir aligned %p diff %d\n",
1618                              priv->ict_tbl, priv->ict_tbl_vir,
1619                         (int)(priv->aligned_ict_tbl_dma - priv->ict_tbl_dma));
1620
1621         /* reset table and index to all 0 */
1622         memset(priv->ict_tbl_vir,0, (sizeof(u32) * ICT_COUNT) + PAGE_SIZE);
1623         priv->ict_index = 0;
1624
1625         /* add periodic RX interrupt */
1626         priv->inta_mask |= CSR_INT_BIT_RX_PERIODIC;
1627         return 0;
1628 }
1629 EXPORT_SYMBOL(iwl_alloc_isr_ict);
1630
1631 /* Device is going up inform it about using ICT interrupt table,
1632  * also we need to tell the driver to start using ICT interrupt.
1633  */
1634 int iwl_reset_ict(struct iwl_priv *priv)
1635 {
1636         u32 val;
1637         unsigned long flags;
1638
1639         if (!priv->ict_tbl_vir)
1640                 return 0;
1641
1642         spin_lock_irqsave(&priv->lock, flags);
1643         iwl_disable_interrupts(priv);
1644
1645         memset(&priv->ict_tbl[0], 0, sizeof(u32) * ICT_COUNT);
1646
1647         val = priv->aligned_ict_tbl_dma >> PAGE_SHIFT;
1648
1649         val |= CSR_DRAM_INT_TBL_ENABLE;
1650         val |= CSR_DRAM_INIT_TBL_WRAP_CHECK;
1651
1652         IWL_DEBUG_ISR(priv, "CSR_DRAM_INT_TBL_REG =0x%X "
1653                         "aligned dma address %Lx\n",
1654                         val, (unsigned long long)priv->aligned_ict_tbl_dma);
1655
1656         iwl_write32(priv, CSR_DRAM_INT_TBL_REG, val);
1657         priv->use_ict = true;
1658         priv->ict_index = 0;
1659         iwl_write32(priv, CSR_INT, priv->inta_mask);
1660         iwl_enable_interrupts(priv);
1661         spin_unlock_irqrestore(&priv->lock, flags);
1662
1663         return 0;
1664 }
1665 EXPORT_SYMBOL(iwl_reset_ict);
1666
1667 /* Device is going down disable ict interrupt usage */
1668 void iwl_disable_ict(struct iwl_priv *priv)
1669 {
1670         unsigned long flags;
1671
1672         spin_lock_irqsave(&priv->lock, flags);
1673         priv->use_ict = false;
1674         spin_unlock_irqrestore(&priv->lock, flags);
1675 }
1676 EXPORT_SYMBOL(iwl_disable_ict);
1677
1678 /* interrupt handler using ict table, with this interrupt driver will
1679  * stop using INTA register to get device's interrupt, reading this register
1680  * is expensive, device will write interrupts in ICT dram table, increment
1681  * index then will fire interrupt to driver, driver will OR all ICT table
1682  * entries from current index up to table entry with 0 value. the result is
1683  * the interrupt we need to service, driver will set the entries back to 0 and
1684  * set index.
1685  */
1686 irqreturn_t iwl_isr_ict(int irq, void *data)
1687 {
1688         struct iwl_priv *priv = data;
1689         u32 inta, inta_mask;
1690         u32 val = 0;
1691
1692         if (!priv)
1693                 return IRQ_NONE;
1694
1695         /* dram interrupt table not set yet,
1696          * use legacy interrupt.
1697          */
1698         if (!priv->use_ict)
1699                 return iwl_isr(irq, data);
1700
1701         spin_lock(&priv->lock);
1702
1703         /* Disable (but don't clear!) interrupts here to avoid
1704          * back-to-back ISRs and sporadic interrupts from our NIC.
1705          * If we have something to service, the tasklet will re-enable ints.
1706          * If we *don't* have something, we'll re-enable before leaving here.
1707          */
1708         inta_mask = iwl_read32(priv, CSR_INT_MASK);  /* just for debug */
1709         iwl_write32(priv, CSR_INT_MASK, 0x00000000);
1710
1711
1712         /* Ignore interrupt if there's nothing in NIC to service.
1713          * This may be due to IRQ shared with another device,
1714          * or due to sporadic interrupts thrown from our NIC. */
1715         if (!priv->ict_tbl[priv->ict_index]) {
1716                 IWL_DEBUG_ISR(priv, "Ignore interrupt, inta == 0\n");
1717                 goto none;
1718         }
1719
1720         /* read all entries that not 0 start with ict_index */
1721         while (priv->ict_tbl[priv->ict_index]) {
1722
1723                 val |= le32_to_cpu(priv->ict_tbl[priv->ict_index]);
1724                 IWL_DEBUG_ISR(priv, "ICT index %d value 0x%08X\n",
1725                                 priv->ict_index,
1726                                 le32_to_cpu(priv->ict_tbl[priv->ict_index]));
1727                 priv->ict_tbl[priv->ict_index] = 0;
1728                 priv->ict_index = iwl_queue_inc_wrap(priv->ict_index,
1729                                                      ICT_COUNT);
1730
1731         }
1732
1733         /* We should not get this value, just ignore it. */
1734         if (val == 0xffffffff)
1735                 val = 0;
1736
1737         inta = (0xff & val) | ((0xff00 & val) << 16);
1738         IWL_DEBUG_ISR(priv, "ISR inta 0x%08x, enabled 0x%08x ict 0x%08x\n",
1739                         inta, inta_mask, val);
1740
1741         inta &= priv->inta_mask;
1742         priv->inta |= inta;
1743
1744         /* iwl_irq_tasklet() will service interrupts and re-enable them */
1745         if (likely(inta))
1746                 tasklet_schedule(&priv->irq_tasklet);
1747         else if (test_bit(STATUS_INT_ENABLED, &priv->status) && !priv->inta) {
1748                 /* Allow interrupt if was disabled by this handler and
1749                  * no tasklet was schedules, We should not enable interrupt,
1750                  * tasklet will enable it.
1751                  */
1752                 iwl_enable_interrupts(priv);
1753         }
1754
1755         spin_unlock(&priv->lock);
1756         return IRQ_HANDLED;
1757
1758  none:
1759         /* re-enable interrupts here since we don't have anything to service.
1760          * only Re-enable if disabled by irq.
1761          */
1762         if (test_bit(STATUS_INT_ENABLED, &priv->status) && !priv->inta)
1763                 iwl_enable_interrupts(priv);
1764
1765         spin_unlock(&priv->lock);
1766         return IRQ_NONE;
1767 }
1768 EXPORT_SYMBOL(iwl_isr_ict);
1769
1770
1771 static irqreturn_t iwl_isr(int irq, void *data)
1772 {
1773         struct iwl_priv *priv = data;
1774         u32 inta, inta_mask;
1775 #ifdef CONFIG_IWLWIFI_DEBUG
1776         u32 inta_fh;
1777 #endif
1778         if (!priv)
1779                 return IRQ_NONE;
1780
1781         spin_lock(&priv->lock);
1782
1783         /* Disable (but don't clear!) interrupts here to avoid
1784          *    back-to-back ISRs and sporadic interrupts from our NIC.
1785          * If we have something to service, the tasklet will re-enable ints.
1786          * If we *don't* have something, we'll re-enable before leaving here. */
1787         inta_mask = iwl_read32(priv, CSR_INT_MASK);  /* just for debug */
1788         iwl_write32(priv, CSR_INT_MASK, 0x00000000);
1789
1790         /* Discover which interrupts are active/pending */
1791         inta = iwl_read32(priv, CSR_INT);
1792
1793         /* Ignore interrupt if there's nothing in NIC to service.
1794          * This may be due to IRQ shared with another device,
1795          * or due to sporadic interrupts thrown from our NIC. */
1796         if (!inta) {
1797                 IWL_DEBUG_ISR(priv, "Ignore interrupt, inta == 0\n");
1798                 goto none;
1799         }
1800
1801         if ((inta == 0xFFFFFFFF) || ((inta & 0xFFFFFFF0) == 0xa5a5a5a0)) {
1802                 /* Hardware disappeared. It might have already raised
1803                  * an interrupt */
1804                 IWL_WARN(priv, "HARDWARE GONE?? INTA == 0x%08x\n", inta);
1805                 goto unplugged;
1806         }
1807
1808 #ifdef CONFIG_IWLWIFI_DEBUG
1809         if (iwl_get_debug_level(priv) & (IWL_DL_ISR)) {
1810                 inta_fh = iwl_read32(priv, CSR_FH_INT_STATUS);
1811                 IWL_DEBUG_ISR(priv, "ISR inta 0x%08x, enabled 0x%08x, "
1812                               "fh 0x%08x\n", inta, inta_mask, inta_fh);
1813         }
1814 #endif
1815
1816         priv->inta |= inta;
1817         /* iwl_irq_tasklet() will service interrupts and re-enable them */
1818         if (likely(inta))
1819                 tasklet_schedule(&priv->irq_tasklet);
1820         else if (test_bit(STATUS_INT_ENABLED, &priv->status) && !priv->inta)
1821                 iwl_enable_interrupts(priv);
1822
1823  unplugged:
1824         spin_unlock(&priv->lock);
1825         return IRQ_HANDLED;
1826
1827  none:
1828         /* re-enable interrupts here since we don't have anything to service. */
1829         /* only Re-enable if diabled by irq  and no schedules tasklet. */
1830         if (test_bit(STATUS_INT_ENABLED, &priv->status) && !priv->inta)
1831                 iwl_enable_interrupts(priv);
1832
1833         spin_unlock(&priv->lock);
1834         return IRQ_NONE;
1835 }
1836
1837 irqreturn_t iwl_isr_legacy(int irq, void *data)
1838 {
1839         struct iwl_priv *priv = data;
1840         u32 inta, inta_mask;
1841         u32 inta_fh;
1842         if (!priv)
1843                 return IRQ_NONE;
1844
1845         spin_lock(&priv->lock);
1846
1847         /* Disable (but don't clear!) interrupts here to avoid
1848          *    back-to-back ISRs and sporadic interrupts from our NIC.
1849          * If we have something to service, the tasklet will re-enable ints.
1850          * If we *don't* have something, we'll re-enable before leaving here. */
1851         inta_mask = iwl_read32(priv, CSR_INT_MASK);  /* just for debug */
1852         iwl_write32(priv, CSR_INT_MASK, 0x00000000);
1853
1854         /* Discover which interrupts are active/pending */
1855         inta = iwl_read32(priv, CSR_INT);
1856         inta_fh = iwl_read32(priv, CSR_FH_INT_STATUS);
1857
1858         /* Ignore interrupt if there's nothing in NIC to service.
1859          * This may be due to IRQ shared with another device,
1860          * or due to sporadic interrupts thrown from our NIC. */
1861         if (!inta && !inta_fh) {
1862                 IWL_DEBUG_ISR(priv, "Ignore interrupt, inta == 0, inta_fh == 0\n");
1863                 goto none;
1864         }
1865
1866         if ((inta == 0xFFFFFFFF) || ((inta & 0xFFFFFFF0) == 0xa5a5a5a0)) {
1867                 /* Hardware disappeared. It might have already raised
1868                  * an interrupt */
1869                 IWL_WARN(priv, "HARDWARE GONE?? INTA == 0x%08x\n", inta);
1870                 goto unplugged;
1871         }
1872
1873         IWL_DEBUG_ISR(priv, "ISR inta 0x%08x, enabled 0x%08x, fh 0x%08x\n",
1874                       inta, inta_mask, inta_fh);
1875
1876         inta &= ~CSR_INT_BIT_SCD;
1877
1878         /* iwl_irq_tasklet() will service interrupts and re-enable them */
1879         if (likely(inta || inta_fh))
1880                 tasklet_schedule(&priv->irq_tasklet);
1881
1882  unplugged:
1883         spin_unlock(&priv->lock);
1884         return IRQ_HANDLED;
1885
1886  none:
1887         /* re-enable interrupts here since we don't have anything to service. */
1888         /* only Re-enable if diabled by irq */
1889         if (test_bit(STATUS_INT_ENABLED, &priv->status))
1890                 iwl_enable_interrupts(priv);
1891         spin_unlock(&priv->lock);
1892         return IRQ_NONE;
1893 }
1894 EXPORT_SYMBOL(iwl_isr_legacy);
1895
1896 int iwl_send_bt_config(struct iwl_priv *priv)
1897 {
1898         struct iwl_bt_cmd bt_cmd = {
1899                 .flags = 3,
1900                 .lead_time = 0xAA,
1901                 .max_kill = 1,
1902                 .kill_ack_mask = 0,
1903                 .kill_cts_mask = 0,
1904         };
1905
1906         return iwl_send_cmd_pdu(priv, REPLY_BT_CONFIG,
1907                                 sizeof(struct iwl_bt_cmd), &bt_cmd);
1908 }
1909 EXPORT_SYMBOL(iwl_send_bt_config);
1910
1911 int iwl_send_statistics_request(struct iwl_priv *priv, u8 flags)
1912 {
1913         u32 stat_flags = 0;
1914         struct iwl_host_cmd cmd = {
1915                 .id = REPLY_STATISTICS_CMD,
1916                 .flags = flags,
1917                 .len = sizeof(stat_flags),
1918                 .data = (u8 *) &stat_flags,
1919         };
1920         return iwl_send_cmd(priv, &cmd);
1921 }
1922 EXPORT_SYMBOL(iwl_send_statistics_request);
1923
1924 /**
1925  * iwl_verify_inst_sparse - verify runtime uCode image in card vs. host,
1926  *   using sample data 100 bytes apart.  If these sample points are good,
1927  *   it's a pretty good bet that everything between them is good, too.
1928  */
1929 static int iwlcore_verify_inst_sparse(struct iwl_priv *priv, __le32 *image, u32 len)
1930 {
1931         u32 val;
1932         int ret = 0;
1933         u32 errcnt = 0;
1934         u32 i;
1935
1936         IWL_DEBUG_INFO(priv, "ucode inst image size is %u\n", len);
1937
1938         for (i = 0; i < len; i += 100, image += 100/sizeof(u32)) {
1939                 /* read data comes through single port, auto-incr addr */
1940                 /* NOTE: Use the debugless read so we don't flood kernel log
1941                  * if IWL_DL_IO is set */
1942                 iwl_write_direct32(priv, HBUS_TARG_MEM_RADDR,
1943                         i + IWL49_RTC_INST_LOWER_BOUND);
1944                 val = _iwl_read_direct32(priv, HBUS_TARG_MEM_RDAT);
1945                 if (val != le32_to_cpu(*image)) {
1946                         ret = -EIO;
1947                         errcnt++;
1948                         if (errcnt >= 3)
1949                                 break;
1950                 }
1951         }
1952
1953         return ret;
1954 }
1955
1956 /**
1957  * iwlcore_verify_inst_full - verify runtime uCode image in card vs. host,
1958  *     looking at all data.
1959  */
1960 static int iwl_verify_inst_full(struct iwl_priv *priv, __le32 *image,
1961                                  u32 len)
1962 {
1963         u32 val;
1964         u32 save_len = len;
1965         int ret = 0;
1966         u32 errcnt;
1967
1968         IWL_DEBUG_INFO(priv, "ucode inst image size is %u\n", len);
1969
1970         iwl_write_direct32(priv, HBUS_TARG_MEM_RADDR,
1971                            IWL49_RTC_INST_LOWER_BOUND);
1972
1973         errcnt = 0;
1974         for (; len > 0; len -= sizeof(u32), image++) {
1975                 /* read data comes through single port, auto-incr addr */
1976                 /* NOTE: Use the debugless read so we don't flood kernel log
1977                  * if IWL_DL_IO is set */
1978                 val = _iwl_read_direct32(priv, HBUS_TARG_MEM_RDAT);
1979                 if (val != le32_to_cpu(*image)) {
1980                         IWL_ERR(priv, "uCode INST section is invalid at "
1981                                   "offset 0x%x, is 0x%x, s/b 0x%x\n",
1982                                   save_len - len, val, le32_to_cpu(*image));
1983                         ret = -EIO;
1984                         errcnt++;
1985                         if (errcnt >= 20)
1986                                 break;
1987                 }
1988         }
1989
1990         if (!errcnt)
1991                 IWL_DEBUG_INFO(priv,
1992                     "ucode image in INSTRUCTION memory is good\n");
1993
1994         return ret;
1995 }
1996
1997 /**
1998  * iwl_verify_ucode - determine which instruction image is in SRAM,
1999  *    and verify its contents
2000  */
2001 int iwl_verify_ucode(struct iwl_priv *priv)
2002 {
2003         __le32 *image;
2004         u32 len;
2005         int ret;
2006
2007         /* Try bootstrap */
2008         image = (__le32 *)priv->ucode_boot.v_addr;
2009         len = priv->ucode_boot.len;
2010         ret = iwlcore_verify_inst_sparse(priv, image, len);
2011         if (!ret) {
2012                 IWL_DEBUG_INFO(priv, "Bootstrap uCode is good in inst SRAM\n");
2013                 return 0;
2014         }
2015
2016         /* Try initialize */
2017         image = (__le32 *)priv->ucode_init.v_addr;
2018         len = priv->ucode_init.len;
2019         ret = iwlcore_verify_inst_sparse(priv, image, len);
2020         if (!ret) {
2021                 IWL_DEBUG_INFO(priv, "Initialize uCode is good in inst SRAM\n");
2022                 return 0;
2023         }
2024
2025         /* Try runtime/protocol */
2026         image = (__le32 *)priv->ucode_code.v_addr;
2027         len = priv->ucode_code.len;
2028         ret = iwlcore_verify_inst_sparse(priv, image, len);
2029         if (!ret) {
2030                 IWL_DEBUG_INFO(priv, "Runtime uCode is good in inst SRAM\n");
2031                 return 0;
2032         }
2033
2034         IWL_ERR(priv, "NO VALID UCODE IMAGE IN INSTRUCTION SRAM!!\n");
2035
2036         /* Since nothing seems to match, show first several data entries in
2037          * instruction SRAM, so maybe visual inspection will give a clue.
2038          * Selection of bootstrap image (vs. other images) is arbitrary. */
2039         image = (__le32 *)priv->ucode_boot.v_addr;
2040         len = priv->ucode_boot.len;
2041         ret = iwl_verify_inst_full(priv, image, len);
2042
2043         return ret;
2044 }
2045 EXPORT_SYMBOL(iwl_verify_ucode);
2046
2047
2048 void iwl_rf_kill_ct_config(struct iwl_priv *priv)
2049 {
2050         struct iwl_ct_kill_config cmd;
2051         struct iwl_ct_kill_throttling_config adv_cmd;
2052         unsigned long flags;
2053         int ret = 0;
2054
2055         spin_lock_irqsave(&priv->lock, flags);
2056         iwl_write32(priv, CSR_UCODE_DRV_GP1_CLR,
2057                     CSR_UCODE_DRV_GP1_REG_BIT_CT_KILL_EXIT);
2058         spin_unlock_irqrestore(&priv->lock, flags);
2059         priv->thermal_throttle.ct_kill_toggle = false;
2060
2061         switch (priv->hw_rev & CSR_HW_REV_TYPE_MSK) {
2062         case CSR_HW_REV_TYPE_1000:
2063         case CSR_HW_REV_TYPE_6x00:
2064         case CSR_HW_REV_TYPE_6x50:
2065                 adv_cmd.critical_temperature_enter =
2066                         cpu_to_le32(priv->hw_params.ct_kill_threshold);
2067                 adv_cmd.critical_temperature_exit =
2068                         cpu_to_le32(priv->hw_params.ct_kill_exit_threshold);
2069
2070                 ret = iwl_send_cmd_pdu(priv, REPLY_CT_KILL_CONFIG_CMD,
2071                                        sizeof(adv_cmd), &adv_cmd);
2072                 if (ret)
2073                         IWL_ERR(priv, "REPLY_CT_KILL_CONFIG_CMD failed\n");
2074                 else
2075                         IWL_DEBUG_INFO(priv, "REPLY_CT_KILL_CONFIG_CMD "
2076                                         "succeeded, "
2077                                         "critical temperature enter is %d,"
2078                                         "exit is %d\n",
2079                                        priv->hw_params.ct_kill_threshold,
2080                                        priv->hw_params.ct_kill_exit_threshold);
2081                 break;
2082         default:
2083                 cmd.critical_temperature_R =
2084                         cpu_to_le32(priv->hw_params.ct_kill_threshold);
2085
2086                 ret = iwl_send_cmd_pdu(priv, REPLY_CT_KILL_CONFIG_CMD,
2087                                        sizeof(cmd), &cmd);
2088                 if (ret)
2089                         IWL_ERR(priv, "REPLY_CT_KILL_CONFIG_CMD failed\n");
2090                 else
2091                         IWL_DEBUG_INFO(priv, "REPLY_CT_KILL_CONFIG_CMD "
2092                                         "succeeded, "
2093                                         "critical temperature is %d\n",
2094                                         priv->hw_params.ct_kill_threshold);
2095                 break;
2096         }
2097 }
2098 EXPORT_SYMBOL(iwl_rf_kill_ct_config);
2099
2100
2101 /*
2102  * CARD_STATE_CMD
2103  *
2104  * Use: Sets the device's internal card state to enable, disable, or halt
2105  *
2106  * When in the 'enable' state the card operates as normal.
2107  * When in the 'disable' state, the card enters into a low power mode.
2108  * When in the 'halt' state, the card is shut down and must be fully
2109  * restarted to come back on.
2110  */
2111 int iwl_send_card_state(struct iwl_priv *priv, u32 flags, u8 meta_flag)
2112 {
2113         struct iwl_host_cmd cmd = {
2114                 .id = REPLY_CARD_STATE_CMD,
2115                 .len = sizeof(u32),
2116                 .data = &flags,
2117                 .flags = meta_flag,
2118         };
2119
2120         return iwl_send_cmd(priv, &cmd);
2121 }
2122
2123 void iwl_rx_pm_sleep_notif(struct iwl_priv *priv,
2124                            struct iwl_rx_mem_buffer *rxb)
2125 {
2126 #ifdef CONFIG_IWLWIFI_DEBUG
2127         struct iwl_rx_packet *pkt = (struct iwl_rx_packet *)rxb->skb->data;
2128         struct iwl_sleep_notification *sleep = &(pkt->u.sleep_notif);
2129         IWL_DEBUG_RX(priv, "sleep mode: %d, src: %d\n",
2130                      sleep->pm_sleep_mode, sleep->pm_wakeup_src);
2131 #endif
2132 }
2133 EXPORT_SYMBOL(iwl_rx_pm_sleep_notif);
2134
2135 void iwl_rx_pm_debug_statistics_notif(struct iwl_priv *priv,
2136                                       struct iwl_rx_mem_buffer *rxb)
2137 {
2138         struct iwl_rx_packet *pkt = (struct iwl_rx_packet *)rxb->skb->data;
2139         u32 len = le32_to_cpu(pkt->len_n_flags) & FH_RSCSR_FRAME_SIZE_MSK;
2140         IWL_DEBUG_RADIO(priv, "Dumping %d bytes of unhandled "
2141                         "notification for %s:\n", len,
2142                         get_cmd_string(pkt->hdr.cmd));
2143         iwl_print_hex_dump(priv, IWL_DL_RADIO, pkt->u.raw, len);
2144 }
2145 EXPORT_SYMBOL(iwl_rx_pm_debug_statistics_notif);
2146
2147 void iwl_rx_reply_error(struct iwl_priv *priv,
2148                         struct iwl_rx_mem_buffer *rxb)
2149 {
2150         struct iwl_rx_packet *pkt = (struct iwl_rx_packet *)rxb->skb->data;
2151
2152         IWL_ERR(priv, "Error Reply type 0x%08X cmd %s (0x%02X) "
2153                 "seq 0x%04X ser 0x%08X\n",
2154                 le32_to_cpu(pkt->u.err_resp.error_type),
2155                 get_cmd_string(pkt->u.err_resp.cmd_id),
2156                 pkt->u.err_resp.cmd_id,
2157                 le16_to_cpu(pkt->u.err_resp.bad_cmd_seq_num),
2158                 le32_to_cpu(pkt->u.err_resp.error_info));
2159 }
2160 EXPORT_SYMBOL(iwl_rx_reply_error);
2161
2162 void iwl_clear_isr_stats(struct iwl_priv *priv)
2163 {
2164         memset(&priv->isr_stats, 0, sizeof(priv->isr_stats));
2165 }
2166
2167 int iwl_mac_conf_tx(struct ieee80211_hw *hw, u16 queue,
2168                            const struct ieee80211_tx_queue_params *params)
2169 {
2170         struct iwl_priv *priv = hw->priv;
2171         unsigned long flags;
2172         int q;
2173
2174         IWL_DEBUG_MAC80211(priv, "enter\n");
2175
2176         if (!iwl_is_ready_rf(priv)) {
2177                 IWL_DEBUG_MAC80211(priv, "leave - RF not ready\n");
2178                 return -EIO;
2179         }
2180
2181         if (queue >= AC_NUM) {
2182                 IWL_DEBUG_MAC80211(priv, "leave - queue >= AC_NUM %d\n", queue);
2183                 return 0;
2184         }
2185
2186         q = AC_NUM - 1 - queue;
2187
2188         spin_lock_irqsave(&priv->lock, flags);
2189
2190         priv->qos_data.def_qos_parm.ac[q].cw_min = cpu_to_le16(params->cw_min);
2191         priv->qos_data.def_qos_parm.ac[q].cw_max = cpu_to_le16(params->cw_max);
2192         priv->qos_data.def_qos_parm.ac[q].aifsn = params->aifs;
2193         priv->qos_data.def_qos_parm.ac[q].edca_txop =
2194                         cpu_to_le16((params->txop * 32));
2195
2196         priv->qos_data.def_qos_parm.ac[q].reserved1 = 0;
2197         priv->qos_data.qos_active = 1;
2198
2199         if (priv->iw_mode == NL80211_IFTYPE_AP)
2200                 iwl_activate_qos(priv, 1);
2201         else if (priv->assoc_id && iwl_is_associated(priv))
2202                 iwl_activate_qos(priv, 0);
2203
2204         spin_unlock_irqrestore(&priv->lock, flags);
2205
2206         IWL_DEBUG_MAC80211(priv, "leave\n");
2207         return 0;
2208 }
2209 EXPORT_SYMBOL(iwl_mac_conf_tx);
2210
2211 static void iwl_ht_conf(struct iwl_priv *priv,
2212                         struct ieee80211_bss_conf *bss_conf)
2213 {
2214         struct iwl_ht_config *ht_conf = &priv->current_ht_config;
2215         struct ieee80211_sta *sta;
2216
2217         IWL_DEBUG_MAC80211(priv, "enter: \n");
2218
2219         if (!ht_conf->is_ht)
2220                 return;
2221
2222         ht_conf->ht_protection =
2223                 bss_conf->ht_operation_mode & IEEE80211_HT_OP_MODE_PROTECTION;
2224         ht_conf->non_GF_STA_present =
2225                 !!(bss_conf->ht_operation_mode & IEEE80211_HT_OP_MODE_NON_GF_STA_PRSNT);
2226
2227         ht_conf->single_chain_sufficient = false;
2228
2229         switch (priv->iw_mode) {
2230         case NL80211_IFTYPE_STATION:
2231                 rcu_read_lock();
2232                 sta = ieee80211_find_sta(priv->hw, priv->bssid);
2233                 if (sta) {
2234                         struct ieee80211_sta_ht_cap *ht_cap = &sta->ht_cap;
2235                         int maxstreams;
2236
2237                         maxstreams = (ht_cap->mcs.tx_params &
2238                                       IEEE80211_HT_MCS_TX_MAX_STREAMS_MASK)
2239                                         >> IEEE80211_HT_MCS_TX_MAX_STREAMS_SHIFT;
2240                         maxstreams += 1;
2241
2242                         if ((ht_cap->mcs.rx_mask[1] == 0) &&
2243                             (ht_cap->mcs.rx_mask[2] == 0))
2244                                 ht_conf->single_chain_sufficient = true;
2245                         if (maxstreams <= 1)
2246                                 ht_conf->single_chain_sufficient = true;
2247                 } else {
2248                         /*
2249                          * If at all, this can only happen through a race
2250                          * when the AP disconnects us while we're still
2251                          * setting up the connection, in that case mac80211
2252                          * will soon tell us about that.
2253                          */
2254                         ht_conf->single_chain_sufficient = true;
2255                 }
2256                 rcu_read_unlock();
2257                 break;
2258         case NL80211_IFTYPE_ADHOC:
2259                 ht_conf->single_chain_sufficient = true;
2260                 break;
2261         default:
2262                 break;
2263         }
2264
2265         IWL_DEBUG_MAC80211(priv, "leave\n");
2266 }
2267
2268 #define IWL_DELAY_NEXT_SCAN_AFTER_ASSOC (HZ*6)
2269 void iwl_bss_info_changed(struct ieee80211_hw *hw,
2270                           struct ieee80211_vif *vif,
2271                           struct ieee80211_bss_conf *bss_conf,
2272                           u32 changes)
2273 {
2274         struct iwl_priv *priv = hw->priv;
2275         int ret;
2276
2277         IWL_DEBUG_MAC80211(priv, "changes = 0x%X\n", changes);
2278
2279         if (!iwl_is_alive(priv))
2280                 return;
2281
2282         mutex_lock(&priv->mutex);
2283
2284         if (changes & BSS_CHANGED_BEACON &&
2285             priv->iw_mode == NL80211_IFTYPE_AP) {
2286                 dev_kfree_skb(priv->ibss_beacon);
2287                 priv->ibss_beacon = ieee80211_beacon_get(hw, vif);
2288         }
2289
2290         if (changes & BSS_CHANGED_BEACON_INT) {
2291                 priv->beacon_int = bss_conf->beacon_int;
2292                 /* TODO: in AP mode, do something to make this take effect */
2293         }
2294
2295         if (changes & BSS_CHANGED_BSSID) {
2296                 IWL_DEBUG_MAC80211(priv, "BSSID %pM\n", bss_conf->bssid);
2297
2298                 /*
2299                  * If there is currently a HW scan going on in the
2300                  * background then we need to cancel it else the RXON
2301                  * below/in post_associate will fail.
2302                  */
2303                 if (iwl_scan_cancel_timeout(priv, 100)) {
2304                         IWL_WARN(priv, "Aborted scan still in progress after 100ms\n");
2305                         IWL_DEBUG_MAC80211(priv, "leaving - scan abort failed.\n");
2306                         mutex_unlock(&priv->mutex);
2307                         return;
2308                 }
2309
2310                 /* mac80211 only sets assoc when in STATION mode */
2311                 if (priv->iw_mode == NL80211_IFTYPE_ADHOC ||
2312                     bss_conf->assoc) {
2313                         memcpy(priv->staging_rxon.bssid_addr,
2314                                bss_conf->bssid, ETH_ALEN);
2315
2316                         /* currently needed in a few places */
2317                         memcpy(priv->bssid, bss_conf->bssid, ETH_ALEN);
2318                 } else {
2319                         priv->staging_rxon.filter_flags &=
2320                                 ~RXON_FILTER_ASSOC_MSK;
2321                 }
2322
2323         }
2324
2325         /*
2326          * This needs to be after setting the BSSID in case
2327          * mac80211 decides to do both changes at once because
2328          * it will invoke post_associate.
2329          */
2330         if (priv->iw_mode == NL80211_IFTYPE_ADHOC &&
2331             changes & BSS_CHANGED_BEACON) {
2332                 struct sk_buff *beacon = ieee80211_beacon_get(hw, vif);
2333
2334                 if (beacon)
2335                         iwl_mac_beacon_update(hw, beacon);
2336         }
2337
2338         if (changes & BSS_CHANGED_ERP_PREAMBLE) {
2339                 IWL_DEBUG_MAC80211(priv, "ERP_PREAMBLE %d\n",
2340                                    bss_conf->use_short_preamble);
2341                 if (bss_conf->use_short_preamble)
2342                         priv->staging_rxon.flags |= RXON_FLG_SHORT_PREAMBLE_MSK;
2343                 else
2344                         priv->staging_rxon.flags &= ~RXON_FLG_SHORT_PREAMBLE_MSK;
2345         }
2346
2347         if (changes & BSS_CHANGED_ERP_CTS_PROT) {
2348                 IWL_DEBUG_MAC80211(priv, "ERP_CTS %d\n", bss_conf->use_cts_prot);
2349                 if (bss_conf->use_cts_prot && (priv->band != IEEE80211_BAND_5GHZ))
2350                         priv->staging_rxon.flags |= RXON_FLG_TGG_PROTECT_MSK;
2351                 else
2352                         priv->staging_rxon.flags &= ~RXON_FLG_TGG_PROTECT_MSK;
2353         }
2354
2355         if (changes & BSS_CHANGED_BASIC_RATES) {
2356                 /* XXX use this information
2357                  *
2358                  * To do that, remove code from iwl_set_rate() and put something
2359                  * like this here:
2360                  *
2361                 if (A-band)
2362                         priv->staging_rxon.ofdm_basic_rates =
2363                                 bss_conf->basic_rates;
2364                 else
2365                         priv->staging_rxon.ofdm_basic_rates =
2366                                 bss_conf->basic_rates >> 4;
2367                         priv->staging_rxon.cck_basic_rates =
2368                                 bss_conf->basic_rates & 0xF;
2369                  */
2370         }
2371
2372         if (changes & BSS_CHANGED_HT) {
2373                 iwl_ht_conf(priv, bss_conf);
2374
2375                 if (priv->cfg->ops->hcmd->set_rxon_chain)
2376                         priv->cfg->ops->hcmd->set_rxon_chain(priv);
2377         }
2378
2379         if (changes & BSS_CHANGED_ASSOC) {
2380                 IWL_DEBUG_MAC80211(priv, "ASSOC %d\n", bss_conf->assoc);
2381                 if (bss_conf->assoc) {
2382                         priv->assoc_id = bss_conf->aid;
2383                         priv->beacon_int = bss_conf->beacon_int;
2384                         priv->timestamp = bss_conf->timestamp;
2385                         priv->assoc_capability = bss_conf->assoc_capability;
2386
2387                         /*
2388                          * We have just associated, don't start scan too early
2389                          * leave time for EAPOL exchange to complete.
2390                          *
2391                          * XXX: do this in mac80211
2392                          */
2393                         priv->next_scan_jiffies = jiffies +
2394                                         IWL_DELAY_NEXT_SCAN_AFTER_ASSOC;
2395                         if (!iwl_is_rfkill(priv))
2396                                 priv->cfg->ops->lib->post_associate(priv);
2397                 } else
2398                         priv->assoc_id = 0;
2399
2400         }
2401
2402         if (changes && iwl_is_associated(priv) && priv->assoc_id) {
2403                 IWL_DEBUG_MAC80211(priv, "Changes (%#x) while associated\n",
2404                                    changes);
2405                 ret = iwl_send_rxon_assoc(priv);
2406                 if (!ret) {
2407                         /* Sync active_rxon with latest change. */
2408                         memcpy((void *)&priv->active_rxon,
2409                                 &priv->staging_rxon,
2410                                 sizeof(struct iwl_rxon_cmd));
2411                 }
2412         }
2413
2414         mutex_unlock(&priv->mutex);
2415
2416         IWL_DEBUG_MAC80211(priv, "leave\n");
2417 }
2418 EXPORT_SYMBOL(iwl_bss_info_changed);
2419
2420 int iwl_mac_beacon_update(struct ieee80211_hw *hw, struct sk_buff *skb)
2421 {
2422         struct iwl_priv *priv = hw->priv;
2423         unsigned long flags;
2424         __le64 timestamp;
2425
2426         IWL_DEBUG_MAC80211(priv, "enter\n");
2427
2428         if (!iwl_is_ready_rf(priv)) {
2429                 IWL_DEBUG_MAC80211(priv, "leave - RF not ready\n");
2430                 return -EIO;
2431         }
2432
2433         if (priv->iw_mode != NL80211_IFTYPE_ADHOC) {
2434                 IWL_DEBUG_MAC80211(priv, "leave - not IBSS\n");
2435                 return -EIO;
2436         }
2437
2438         spin_lock_irqsave(&priv->lock, flags);
2439
2440         if (priv->ibss_beacon)
2441                 dev_kfree_skb(priv->ibss_beacon);
2442
2443         priv->ibss_beacon = skb;
2444
2445         priv->assoc_id = 0;
2446         timestamp = ((struct ieee80211_mgmt *)skb->data)->u.beacon.timestamp;
2447         priv->timestamp = le64_to_cpu(timestamp);
2448
2449         IWL_DEBUG_MAC80211(priv, "leave\n");
2450         spin_unlock_irqrestore(&priv->lock, flags);
2451
2452         iwl_reset_qos(priv);
2453
2454         priv->cfg->ops->lib->post_associate(priv);
2455
2456
2457         return 0;
2458 }
2459 EXPORT_SYMBOL(iwl_mac_beacon_update);
2460
2461 int iwl_set_mode(struct iwl_priv *priv, int mode)
2462 {
2463         if (mode == NL80211_IFTYPE_ADHOC) {
2464                 const struct iwl_channel_info *ch_info;
2465
2466                 ch_info = iwl_get_channel_info(priv,
2467                         priv->band,
2468                         le16_to_cpu(priv->staging_rxon.channel));
2469
2470                 if (!ch_info || !is_channel_ibss(ch_info)) {
2471                         IWL_ERR(priv, "channel %d not IBSS channel\n",
2472                                   le16_to_cpu(priv->staging_rxon.channel));
2473                         return -EINVAL;
2474                 }
2475         }
2476
2477         iwl_connection_init_rx_config(priv, mode);
2478
2479         if (priv->cfg->ops->hcmd->set_rxon_chain)
2480                 priv->cfg->ops->hcmd->set_rxon_chain(priv);
2481
2482         memcpy(priv->staging_rxon.node_addr, priv->mac_addr, ETH_ALEN);
2483
2484         iwl_clear_stations_table(priv);
2485
2486         /* dont commit rxon if rf-kill is on*/
2487         if (!iwl_is_ready_rf(priv))
2488                 return -EAGAIN;
2489
2490         iwlcore_commit_rxon(priv);
2491
2492         return 0;
2493 }
2494 EXPORT_SYMBOL(iwl_set_mode);
2495
2496 int iwl_mac_add_interface(struct ieee80211_hw *hw,
2497                                  struct ieee80211_if_init_conf *conf)
2498 {
2499         struct iwl_priv *priv = hw->priv;
2500         unsigned long flags;
2501
2502         IWL_DEBUG_MAC80211(priv, "enter: type %d\n", conf->type);
2503
2504         if (priv->vif) {
2505                 IWL_DEBUG_MAC80211(priv, "leave - vif != NULL\n");
2506                 return -EOPNOTSUPP;
2507         }
2508
2509         spin_lock_irqsave(&priv->lock, flags);
2510         priv->vif = conf->vif;
2511         priv->iw_mode = conf->type;
2512
2513         spin_unlock_irqrestore(&priv->lock, flags);
2514
2515         mutex_lock(&priv->mutex);
2516
2517         if (conf->mac_addr) {
2518                 IWL_DEBUG_MAC80211(priv, "Set %pM\n", conf->mac_addr);
2519                 memcpy(priv->mac_addr, conf->mac_addr, ETH_ALEN);
2520         }
2521
2522         if (iwl_set_mode(priv, conf->type) == -EAGAIN)
2523                 /* we are not ready, will run again when ready */
2524                 set_bit(STATUS_MODE_PENDING, &priv->status);
2525
2526         mutex_unlock(&priv->mutex);
2527
2528         IWL_DEBUG_MAC80211(priv, "leave\n");
2529         return 0;
2530 }
2531 EXPORT_SYMBOL(iwl_mac_add_interface);
2532
2533 void iwl_mac_remove_interface(struct ieee80211_hw *hw,
2534                                      struct ieee80211_if_init_conf *conf)
2535 {
2536         struct iwl_priv *priv = hw->priv;
2537
2538         IWL_DEBUG_MAC80211(priv, "enter\n");
2539
2540         mutex_lock(&priv->mutex);
2541
2542         if (iwl_is_ready_rf(priv)) {
2543                 iwl_scan_cancel_timeout(priv, 100);
2544                 priv->staging_rxon.filter_flags &= ~RXON_FILTER_ASSOC_MSK;
2545                 iwlcore_commit_rxon(priv);
2546         }
2547         if (priv->vif == conf->vif) {
2548                 priv->vif = NULL;
2549                 memset(priv->bssid, 0, ETH_ALEN);
2550         }
2551         mutex_unlock(&priv->mutex);
2552
2553         IWL_DEBUG_MAC80211(priv, "leave\n");
2554
2555 }
2556 EXPORT_SYMBOL(iwl_mac_remove_interface);
2557
2558 /**
2559  * iwl_mac_config - mac80211 config callback
2560  *
2561  * We ignore conf->flags & IEEE80211_CONF_SHORT_SLOT_TIME since it seems to
2562  * be set inappropriately and the driver currently sets the hardware up to
2563  * use it whenever needed.
2564  */
2565 int iwl_mac_config(struct ieee80211_hw *hw, u32 changed)
2566 {
2567         struct iwl_priv *priv = hw->priv;
2568         const struct iwl_channel_info *ch_info;
2569         struct ieee80211_conf *conf = &hw->conf;
2570         struct iwl_ht_config *ht_conf = &priv->current_ht_config;
2571         unsigned long flags = 0;
2572         int ret = 0;
2573         u16 ch;
2574         int scan_active = 0;
2575
2576         mutex_lock(&priv->mutex);
2577
2578         IWL_DEBUG_MAC80211(priv, "enter to channel %d changed 0x%X\n",
2579                                         conf->channel->hw_value, changed);
2580
2581         if (unlikely(!priv->cfg->mod_params->disable_hw_scan &&
2582                         test_bit(STATUS_SCANNING, &priv->status))) {
2583                 scan_active = 1;
2584                 IWL_DEBUG_MAC80211(priv, "leave - scanning\n");
2585         }
2586
2587
2588         /* during scanning mac80211 will delay channel setting until
2589          * scan finish with changed = 0
2590          */
2591         if (!changed || (changed & IEEE80211_CONF_CHANGE_CHANNEL)) {
2592                 if (scan_active)
2593                         goto set_ch_out;
2594
2595                 ch = ieee80211_frequency_to_channel(conf->channel->center_freq);
2596                 ch_info = iwl_get_channel_info(priv, conf->channel->band, ch);
2597                 if (!is_channel_valid(ch_info)) {
2598                         IWL_DEBUG_MAC80211(priv, "leave - invalid channel\n");
2599                         ret = -EINVAL;
2600                         goto set_ch_out;
2601                 }
2602
2603                 if (priv->iw_mode == NL80211_IFTYPE_ADHOC &&
2604                         !is_channel_ibss(ch_info)) {
2605                         IWL_ERR(priv, "channel %d in band %d not "
2606                                 "IBSS channel\n",
2607                                 conf->channel->hw_value, conf->channel->band);
2608                         ret = -EINVAL;
2609                         goto set_ch_out;
2610                 }
2611
2612                 spin_lock_irqsave(&priv->lock, flags);
2613
2614                 /* Configure HT40 channels */
2615                 ht_conf->is_ht = conf_is_ht(conf);
2616                 if (ht_conf->is_ht) {
2617                         if (conf_is_ht40_minus(conf)) {
2618                                 ht_conf->extension_chan_offset =
2619                                         IEEE80211_HT_PARAM_CHA_SEC_BELOW;
2620                                 ht_conf->is_40mhz = true;
2621                         } else if (conf_is_ht40_plus(conf)) {
2622                                 ht_conf->extension_chan_offset =
2623                                         IEEE80211_HT_PARAM_CHA_SEC_ABOVE;
2624                                 ht_conf->is_40mhz = true;
2625                         } else {
2626                                 ht_conf->extension_chan_offset =
2627                                         IEEE80211_HT_PARAM_CHA_SEC_NONE;
2628                                 ht_conf->is_40mhz = false;
2629                         }
2630                 } else
2631                         ht_conf->is_40mhz = false;
2632                 /* Default to no protection. Protection mode will later be set
2633                  * from BSS config in iwl_ht_conf */
2634                 ht_conf->ht_protection = IEEE80211_HT_OP_MODE_PROTECTION_NONE;
2635
2636                 /* if we are switching from ht to 2.4 clear flags
2637                  * from any ht related info since 2.4 does not
2638                  * support ht */
2639                 if ((le16_to_cpu(priv->staging_rxon.channel) != ch))
2640                         priv->staging_rxon.flags = 0;
2641
2642                 iwl_set_rxon_channel(priv, conf->channel);
2643
2644                 iwl_set_flags_for_band(priv, conf->channel->band);
2645                 spin_unlock_irqrestore(&priv->lock, flags);
2646  set_ch_out:
2647                 /* The list of supported rates and rate mask can be different
2648                  * for each band; since the band may have changed, reset
2649                  * the rate mask to what mac80211 lists */
2650                 iwl_set_rate(priv);
2651         }
2652
2653         if (changed & IEEE80211_CONF_CHANGE_PS) {
2654                 ret = iwl_power_update_mode(priv, false);
2655                 if (ret)
2656                         IWL_DEBUG_MAC80211(priv, "Error setting sleep level\n");
2657         }
2658
2659         if (changed & IEEE80211_CONF_CHANGE_POWER) {
2660                 IWL_DEBUG_MAC80211(priv, "TX Power old=%d new=%d\n",
2661                         priv->tx_power_user_lmt, conf->power_level);
2662
2663                 iwl_set_tx_power(priv, conf->power_level, false);
2664         }
2665
2666         /* call to ensure that 4965 rx_chain is set properly in monitor mode */
2667         if (priv->cfg->ops->hcmd->set_rxon_chain)
2668                 priv->cfg->ops->hcmd->set_rxon_chain(priv);
2669
2670         if (!iwl_is_ready(priv)) {
2671                 IWL_DEBUG_MAC80211(priv, "leave - not ready\n");
2672                 goto out;
2673         }
2674
2675         if (scan_active)
2676                 goto out;
2677
2678         if (memcmp(&priv->active_rxon,
2679                    &priv->staging_rxon, sizeof(priv->staging_rxon)))
2680                 iwlcore_commit_rxon(priv);
2681         else
2682                 IWL_DEBUG_INFO(priv, "Not re-sending same RXON configuration.\n");
2683
2684
2685 out:
2686         IWL_DEBUG_MAC80211(priv, "leave\n");
2687         mutex_unlock(&priv->mutex);
2688         return ret;
2689 }
2690 EXPORT_SYMBOL(iwl_mac_config);
2691
2692 int iwl_mac_get_tx_stats(struct ieee80211_hw *hw,
2693                          struct ieee80211_tx_queue_stats *stats)
2694 {
2695         struct iwl_priv *priv = hw->priv;
2696         int i, avail;
2697         struct iwl_tx_queue *txq;
2698         struct iwl_queue *q;
2699         unsigned long flags;
2700
2701         IWL_DEBUG_MAC80211(priv, "enter\n");
2702
2703         if (!iwl_is_ready_rf(priv)) {
2704                 IWL_DEBUG_MAC80211(priv, "leave - RF not ready\n");
2705                 return -EIO;
2706         }
2707
2708         spin_lock_irqsave(&priv->lock, flags);
2709
2710         for (i = 0; i < AC_NUM; i++) {
2711                 txq = &priv->txq[i];
2712                 q = &txq->q;
2713                 avail = iwl_queue_space(q);
2714
2715                 stats[i].len = q->n_window - avail;
2716                 stats[i].limit = q->n_window - q->high_mark;
2717                 stats[i].count = q->n_window;
2718
2719         }
2720         spin_unlock_irqrestore(&priv->lock, flags);
2721
2722         IWL_DEBUG_MAC80211(priv, "leave\n");
2723
2724         return 0;
2725 }
2726 EXPORT_SYMBOL(iwl_mac_get_tx_stats);
2727
2728 void iwl_mac_reset_tsf(struct ieee80211_hw *hw)
2729 {
2730         struct iwl_priv *priv = hw->priv;
2731         unsigned long flags;
2732
2733         mutex_lock(&priv->mutex);
2734         IWL_DEBUG_MAC80211(priv, "enter\n");
2735
2736         spin_lock_irqsave(&priv->lock, flags);
2737         memset(&priv->current_ht_config, 0, sizeof(struct iwl_ht_config));
2738         spin_unlock_irqrestore(&priv->lock, flags);
2739
2740         iwl_reset_qos(priv);
2741
2742         spin_lock_irqsave(&priv->lock, flags);
2743         priv->assoc_id = 0;
2744         priv->assoc_capability = 0;
2745         priv->assoc_station_added = 0;
2746
2747         /* new association get rid of ibss beacon skb */
2748         if (priv->ibss_beacon)
2749                 dev_kfree_skb(priv->ibss_beacon);
2750
2751         priv->ibss_beacon = NULL;
2752
2753         priv->beacon_int = priv->vif->bss_conf.beacon_int;
2754         priv->timestamp = 0;
2755         if ((priv->iw_mode == NL80211_IFTYPE_STATION))
2756                 priv->beacon_int = 0;
2757
2758         spin_unlock_irqrestore(&priv->lock, flags);
2759
2760         if (!iwl_is_ready_rf(priv)) {
2761                 IWL_DEBUG_MAC80211(priv, "leave - not ready\n");
2762                 mutex_unlock(&priv->mutex);
2763                 return;
2764         }
2765
2766         /* we are restarting association process
2767          * clear RXON_FILTER_ASSOC_MSK bit
2768          */
2769         if (priv->iw_mode != NL80211_IFTYPE_AP) {
2770                 iwl_scan_cancel_timeout(priv, 100);
2771                 priv->staging_rxon.filter_flags &= ~RXON_FILTER_ASSOC_MSK;
2772                 iwlcore_commit_rxon(priv);
2773         }
2774
2775         if (priv->iw_mode != NL80211_IFTYPE_ADHOC) {
2776                 IWL_DEBUG_MAC80211(priv, "leave - not in IBSS\n");
2777                 mutex_unlock(&priv->mutex);
2778                 return;
2779         }
2780
2781         iwl_set_rate(priv);
2782
2783         mutex_unlock(&priv->mutex);
2784
2785         IWL_DEBUG_MAC80211(priv, "leave\n");
2786 }
2787 EXPORT_SYMBOL(iwl_mac_reset_tsf);
2788
2789 #ifdef CONFIG_IWLWIFI_DEBUGFS
2790
2791 #define IWL_TRAFFIC_DUMP_SIZE   (IWL_TRAFFIC_ENTRY_SIZE * IWL_TRAFFIC_ENTRIES)
2792
2793 void iwl_reset_traffic_log(struct iwl_priv *priv)
2794 {
2795         priv->tx_traffic_idx = 0;
2796         priv->rx_traffic_idx = 0;
2797         if (priv->tx_traffic)
2798                 memset(priv->tx_traffic, 0, IWL_TRAFFIC_DUMP_SIZE);
2799         if (priv->rx_traffic)
2800                 memset(priv->rx_traffic, 0, IWL_TRAFFIC_DUMP_SIZE);
2801 }
2802
2803 int iwl_alloc_traffic_mem(struct iwl_priv *priv)
2804 {
2805         u32 traffic_size = IWL_TRAFFIC_DUMP_SIZE;
2806
2807         if (iwl_debug_level & IWL_DL_TX) {
2808                 if (!priv->tx_traffic) {
2809                         priv->tx_traffic =
2810                                 kzalloc(traffic_size, GFP_KERNEL);
2811                         if (!priv->tx_traffic)
2812                                 return -ENOMEM;
2813                 }
2814         }
2815         if (iwl_debug_level & IWL_DL_RX) {
2816                 if (!priv->rx_traffic) {
2817                         priv->rx_traffic =
2818                                 kzalloc(traffic_size, GFP_KERNEL);
2819                         if (!priv->rx_traffic)
2820                                 return -ENOMEM;
2821                 }
2822         }
2823         iwl_reset_traffic_log(priv);
2824         return 0;
2825 }
2826 EXPORT_SYMBOL(iwl_alloc_traffic_mem);
2827
2828 void iwl_free_traffic_mem(struct iwl_priv *priv)
2829 {
2830         kfree(priv->tx_traffic);
2831         priv->tx_traffic = NULL;
2832
2833         kfree(priv->rx_traffic);
2834         priv->rx_traffic = NULL;
2835 }
2836 EXPORT_SYMBOL(iwl_free_traffic_mem);
2837
2838 void iwl_dbg_log_tx_data_frame(struct iwl_priv *priv,
2839                       u16 length, struct ieee80211_hdr *header)
2840 {
2841         __le16 fc;
2842         u16 len;
2843
2844         if (likely(!(iwl_debug_level & IWL_DL_TX)))
2845                 return;
2846
2847         if (!priv->tx_traffic)
2848                 return;
2849
2850         fc = header->frame_control;
2851         if (ieee80211_is_data(fc)) {
2852                 len = (length > IWL_TRAFFIC_ENTRY_SIZE)
2853                        ? IWL_TRAFFIC_ENTRY_SIZE : length;
2854                 memcpy((priv->tx_traffic +
2855                        (priv->tx_traffic_idx * IWL_TRAFFIC_ENTRY_SIZE)),
2856                        header, len);
2857                 priv->tx_traffic_idx =
2858                         (priv->tx_traffic_idx + 1) % IWL_TRAFFIC_ENTRIES;
2859         }
2860 }
2861 EXPORT_SYMBOL(iwl_dbg_log_tx_data_frame);
2862
2863 void iwl_dbg_log_rx_data_frame(struct iwl_priv *priv,
2864                       u16 length, struct ieee80211_hdr *header)
2865 {
2866         __le16 fc;
2867         u16 len;
2868
2869         if (likely(!(iwl_debug_level & IWL_DL_RX)))
2870                 return;
2871
2872         if (!priv->rx_traffic)
2873                 return;
2874
2875         fc = header->frame_control;
2876         if (ieee80211_is_data(fc)) {
2877                 len = (length > IWL_TRAFFIC_ENTRY_SIZE)
2878                        ? IWL_TRAFFIC_ENTRY_SIZE : length;
2879                 memcpy((priv->rx_traffic +
2880                        (priv->rx_traffic_idx * IWL_TRAFFIC_ENTRY_SIZE)),
2881                        header, len);
2882                 priv->rx_traffic_idx =
2883                         (priv->rx_traffic_idx + 1) % IWL_TRAFFIC_ENTRIES;
2884         }
2885 }
2886 EXPORT_SYMBOL(iwl_dbg_log_rx_data_frame);
2887
2888 const char *get_mgmt_string(int cmd)
2889 {
2890         switch (cmd) {
2891                 IWL_CMD(MANAGEMENT_ASSOC_REQ);
2892                 IWL_CMD(MANAGEMENT_ASSOC_RESP);
2893                 IWL_CMD(MANAGEMENT_REASSOC_REQ);
2894                 IWL_CMD(MANAGEMENT_REASSOC_RESP);
2895                 IWL_CMD(MANAGEMENT_PROBE_REQ);
2896                 IWL_CMD(MANAGEMENT_PROBE_RESP);
2897                 IWL_CMD(MANAGEMENT_BEACON);
2898                 IWL_CMD(MANAGEMENT_ATIM);
2899                 IWL_CMD(MANAGEMENT_DISASSOC);
2900                 IWL_CMD(MANAGEMENT_AUTH);
2901                 IWL_CMD(MANAGEMENT_DEAUTH);
2902                 IWL_CMD(MANAGEMENT_ACTION);
2903         default:
2904                 return "UNKNOWN";
2905
2906         }
2907 }
2908
2909 const char *get_ctrl_string(int cmd)
2910 {
2911         switch (cmd) {
2912                 IWL_CMD(CONTROL_BACK_REQ);
2913                 IWL_CMD(CONTROL_BACK);
2914                 IWL_CMD(CONTROL_PSPOLL);
2915                 IWL_CMD(CONTROL_RTS);
2916                 IWL_CMD(CONTROL_CTS);
2917                 IWL_CMD(CONTROL_ACK);
2918                 IWL_CMD(CONTROL_CFEND);
2919                 IWL_CMD(CONTROL_CFENDACK);
2920         default:
2921                 return "UNKNOWN";
2922
2923         }
2924 }
2925
2926 void iwl_clear_tx_stats(struct iwl_priv *priv)
2927 {
2928         memset(&priv->tx_stats, 0, sizeof(struct traffic_stats));
2929
2930 }
2931
2932 void iwl_clear_rx_stats(struct iwl_priv *priv)
2933 {
2934         memset(&priv->rx_stats, 0, sizeof(struct traffic_stats));
2935 }
2936
2937 /*
2938  * if CONFIG_IWLWIFI_DEBUGFS defined, iwl_update_stats function will
2939  * record all the MGMT, CTRL and DATA pkt for both TX and Rx pass.
2940  * Use debugFs to display the rx/rx_statistics
2941  * if CONFIG_IWLWIFI_DEBUGFS not being defined, then no MGMT and CTRL
2942  * information will be recorded, but DATA pkt still will be recorded
2943  * for the reason of iwl_led.c need to control the led blinking based on
2944  * number of tx and rx data.
2945  *
2946  */
2947 void iwl_update_stats(struct iwl_priv *priv, bool is_tx, __le16 fc, u16 len)
2948 {
2949         struct traffic_stats    *stats;
2950
2951         if (is_tx)
2952                 stats = &priv->tx_stats;
2953         else
2954                 stats = &priv->rx_stats;
2955
2956         if (ieee80211_is_mgmt(fc)) {
2957                 switch (fc & cpu_to_le16(IEEE80211_FCTL_STYPE)) {
2958                 case cpu_to_le16(IEEE80211_STYPE_ASSOC_REQ):
2959                         stats->mgmt[MANAGEMENT_ASSOC_REQ]++;
2960                         break;
2961                 case cpu_to_le16(IEEE80211_STYPE_ASSOC_RESP):
2962                         stats->mgmt[MANAGEMENT_ASSOC_RESP]++;
2963                         break;
2964                 case cpu_to_le16(IEEE80211_STYPE_REASSOC_REQ):
2965                         stats->mgmt[MANAGEMENT_REASSOC_REQ]++;
2966                         break;
2967                 case cpu_to_le16(IEEE80211_STYPE_REASSOC_RESP):
2968                         stats->mgmt[MANAGEMENT_REASSOC_RESP]++;
2969                         break;
2970                 case cpu_to_le16(IEEE80211_STYPE_PROBE_REQ):
2971                         stats->mgmt[MANAGEMENT_PROBE_REQ]++;
2972                         break;
2973                 case cpu_to_le16(IEEE80211_STYPE_PROBE_RESP):
2974                         stats->mgmt[MANAGEMENT_PROBE_RESP]++;
2975                         break;
2976                 case cpu_to_le16(IEEE80211_STYPE_BEACON):
2977                         stats->mgmt[MANAGEMENT_BEACON]++;
2978                         break;
2979                 case cpu_to_le16(IEEE80211_STYPE_ATIM):
2980                         stats->mgmt[MANAGEMENT_ATIM]++;
2981                         break;
2982                 case cpu_to_le16(IEEE80211_STYPE_DISASSOC):
2983                         stats->mgmt[MANAGEMENT_DISASSOC]++;
2984                         break;
2985                 case cpu_to_le16(IEEE80211_STYPE_AUTH):
2986                         stats->mgmt[MANAGEMENT_AUTH]++;
2987                         break;
2988                 case cpu_to_le16(IEEE80211_STYPE_DEAUTH):
2989                         stats->mgmt[MANAGEMENT_DEAUTH]++;
2990                         break;
2991                 case cpu_to_le16(IEEE80211_STYPE_ACTION):
2992                         stats->mgmt[MANAGEMENT_ACTION]++;
2993                         break;
2994                 }
2995         } else if (ieee80211_is_ctl(fc)) {
2996                 switch (fc & cpu_to_le16(IEEE80211_FCTL_STYPE)) {
2997                 case cpu_to_le16(IEEE80211_STYPE_BACK_REQ):
2998                         stats->ctrl[CONTROL_BACK_REQ]++;
2999                         break;
3000                 case cpu_to_le16(IEEE80211_STYPE_BACK):
3001                         stats->ctrl[CONTROL_BACK]++;
3002                         break;
3003                 case cpu_to_le16(IEEE80211_STYPE_PSPOLL):
3004                         stats->ctrl[CONTROL_PSPOLL]++;
3005                         break;
3006                 case cpu_to_le16(IEEE80211_STYPE_RTS):
3007                         stats->ctrl[CONTROL_RTS]++;
3008                         break;
3009                 case cpu_to_le16(IEEE80211_STYPE_CTS):
3010                         stats->ctrl[CONTROL_CTS]++;
3011                         break;
3012                 case cpu_to_le16(IEEE80211_STYPE_ACK):
3013                         stats->ctrl[CONTROL_ACK]++;
3014                         break;
3015                 case cpu_to_le16(IEEE80211_STYPE_CFEND):
3016                         stats->ctrl[CONTROL_CFEND]++;
3017                         break;
3018                 case cpu_to_le16(IEEE80211_STYPE_CFENDACK):
3019                         stats->ctrl[CONTROL_CFENDACK]++;
3020                         break;
3021                 }
3022         } else {
3023                 /* data */
3024                 stats->data_cnt++;
3025                 stats->data_bytes += len;
3026         }
3027 }
3028 EXPORT_SYMBOL(iwl_update_stats);
3029 #endif
3030
3031 #ifdef CONFIG_PM
3032
3033 int iwl_pci_suspend(struct pci_dev *pdev, pm_message_t state)
3034 {
3035         struct iwl_priv *priv = pci_get_drvdata(pdev);
3036
3037         /*
3038          * This function is called when system goes into suspend state
3039          * mac80211 will call iwl_mac_stop() from the mac80211 suspend function
3040          * first but since iwl_mac_stop() has no knowledge of who the caller is,
3041          * it will not call apm_ops.stop() to stop the DMA operation.
3042          * Calling apm_ops.stop here to make sure we stop the DMA.
3043          */
3044         priv->cfg->ops->lib->apm_ops.stop(priv);
3045
3046         pci_save_state(pdev);
3047         pci_disable_device(pdev);
3048         pci_set_power_state(pdev, PCI_D3hot);
3049
3050         return 0;
3051 }
3052 EXPORT_SYMBOL(iwl_pci_suspend);
3053
3054 int iwl_pci_resume(struct pci_dev *pdev)
3055 {
3056         struct iwl_priv *priv = pci_get_drvdata(pdev);
3057         int ret;
3058
3059         pci_set_power_state(pdev, PCI_D0);
3060         ret = pci_enable_device(pdev);
3061         if (ret)
3062                 return ret;
3063         pci_restore_state(pdev);
3064         iwl_enable_interrupts(priv);
3065
3066         return 0;
3067 }
3068 EXPORT_SYMBOL(iwl_pci_resume);
3069
3070 #endif /* CONFIG_PM */