iwlwifi: Thermal Throttling Management - Part 1
[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         int rate_index;
100         struct ieee80211_tx_rate *r = &info->control.rates[0];
101
102         info->antenna_sel_tx =
103                 ((rate_n_flags & RATE_MCS_ANT_ABC_MSK) >> RATE_MCS_ANT_POS);
104         if (rate_n_flags & RATE_MCS_HT_MSK)
105                 r->flags |= IEEE80211_TX_RC_MCS;
106         if (rate_n_flags & RATE_MCS_GF_MSK)
107                 r->flags |= IEEE80211_TX_RC_GREEN_FIELD;
108         if (rate_n_flags & RATE_MCS_FAT_MSK)
109                 r->flags |= IEEE80211_TX_RC_40_MHZ_WIDTH;
110         if (rate_n_flags & RATE_MCS_DUP_MSK)
111                 r->flags |= IEEE80211_TX_RC_DUP_DATA;
112         if (rate_n_flags & RATE_MCS_SGI_MSK)
113                 r->flags |= IEEE80211_TX_RC_SHORT_GI;
114         rate_index = iwl_hwrate_to_plcp_idx(rate_n_flags);
115         if (info->band == IEEE80211_BAND_5GHZ)
116                 rate_index -= IWL_FIRST_OFDM_RATE;
117         r->idx = rate_index;
118 }
119 EXPORT_SYMBOL(iwl_hwrate_to_tx_control);
120
121 int iwl_hwrate_to_plcp_idx(u32 rate_n_flags)
122 {
123         int idx = 0;
124
125         /* HT rate format */
126         if (rate_n_flags & RATE_MCS_HT_MSK) {
127                 idx = (rate_n_flags & 0xff);
128
129                 if (idx >= IWL_RATE_MIMO3_6M_PLCP)
130                         idx = idx - IWL_RATE_MIMO3_6M_PLCP;
131                 else if (idx >= IWL_RATE_MIMO2_6M_PLCP)
132                         idx = idx - IWL_RATE_MIMO2_6M_PLCP;
133
134                 idx += IWL_FIRST_OFDM_RATE;
135                 /* skip 9M not supported in ht*/
136                 if (idx >= IWL_RATE_9M_INDEX)
137                         idx += 1;
138                 if ((idx >= IWL_FIRST_OFDM_RATE) && (idx <= IWL_LAST_OFDM_RATE))
139                         return idx;
140
141         /* legacy rate format, search for match in table */
142         } else {
143                 for (idx = 0; idx < ARRAY_SIZE(iwl_rates); idx++)
144                         if (iwl_rates[idx].plcp == (rate_n_flags & 0xFF))
145                                 return idx;
146         }
147
148         return -1;
149 }
150 EXPORT_SYMBOL(iwl_hwrate_to_plcp_idx);
151
152 u8 iwl_toggle_tx_ant(struct iwl_priv *priv, u8 ant)
153 {
154         int i;
155         u8 ind = ant;
156         for (i = 0; i < RATE_ANT_NUM - 1; i++) {
157                 ind = (ind + 1) < RATE_ANT_NUM ?  ind + 1 : 0;
158                 if (priv->hw_params.valid_tx_ant & BIT(ind))
159                         return ind;
160         }
161         return ant;
162 }
163
164 const u8 iwl_bcast_addr[ETH_ALEN] = { 0xFF, 0xFF, 0xFF, 0xFF, 0xFF, 0xFF };
165 EXPORT_SYMBOL(iwl_bcast_addr);
166
167
168 /* This function both allocates and initializes hw and priv. */
169 struct ieee80211_hw *iwl_alloc_all(struct iwl_cfg *cfg,
170                 struct ieee80211_ops *hw_ops)
171 {
172         struct iwl_priv *priv;
173
174         /* mac80211 allocates memory for this device instance, including
175          *   space for this driver's private structure */
176         struct ieee80211_hw *hw =
177                 ieee80211_alloc_hw(sizeof(struct iwl_priv), hw_ops);
178         if (hw == NULL) {
179                 printk(KERN_ERR "%s: Can not allocate network device\n",
180                        cfg->name);
181                 goto out;
182         }
183
184         priv = hw->priv;
185         priv->hw = hw;
186
187 out:
188         return hw;
189 }
190 EXPORT_SYMBOL(iwl_alloc_all);
191
192 void iwl_hw_detect(struct iwl_priv *priv)
193 {
194         priv->hw_rev = _iwl_read32(priv, CSR_HW_REV);
195         priv->hw_wa_rev = _iwl_read32(priv, CSR_HW_REV_WA_REG);
196         pci_read_config_byte(priv->pci_dev, PCI_REVISION_ID, &priv->rev_id);
197 }
198 EXPORT_SYMBOL(iwl_hw_detect);
199
200 int iwl_hw_nic_init(struct iwl_priv *priv)
201 {
202         unsigned long flags;
203         struct iwl_rx_queue *rxq = &priv->rxq;
204         int ret;
205
206         /* nic_init */
207         spin_lock_irqsave(&priv->lock, flags);
208         priv->cfg->ops->lib->apm_ops.init(priv);
209         iwl_write32(priv, CSR_INT_COALESCING, 512 / 32);
210         spin_unlock_irqrestore(&priv->lock, flags);
211
212         ret = priv->cfg->ops->lib->apm_ops.set_pwr_src(priv, IWL_PWR_SRC_VMAIN);
213
214         priv->cfg->ops->lib->apm_ops.config(priv);
215
216         /* Allocate the RX queue, or reset if it is already allocated */
217         if (!rxq->bd) {
218                 ret = iwl_rx_queue_alloc(priv);
219                 if (ret) {
220                         IWL_ERR(priv, "Unable to initialize Rx queue\n");
221                         return -ENOMEM;
222                 }
223         } else
224                 iwl_rx_queue_reset(priv, rxq);
225
226         iwl_rx_replenish(priv);
227
228         iwl_rx_init(priv, rxq);
229
230         spin_lock_irqsave(&priv->lock, flags);
231
232         rxq->need_update = 1;
233         iwl_rx_queue_update_write_ptr(priv, rxq);
234
235         spin_unlock_irqrestore(&priv->lock, flags);
236
237         /* Allocate and init all Tx and Command queues */
238         ret = iwl_txq_ctx_reset(priv);
239         if (ret)
240                 return ret;
241
242         set_bit(STATUS_INIT, &priv->status);
243
244         return 0;
245 }
246 EXPORT_SYMBOL(iwl_hw_nic_init);
247
248 /*
249  * QoS  support
250 */
251 void iwl_activate_qos(struct iwl_priv *priv, u8 force)
252 {
253         if (test_bit(STATUS_EXIT_PENDING, &priv->status))
254                 return;
255
256         priv->qos_data.def_qos_parm.qos_flags = 0;
257
258         if (priv->qos_data.qos_cap.q_AP.queue_request &&
259             !priv->qos_data.qos_cap.q_AP.txop_request)
260                 priv->qos_data.def_qos_parm.qos_flags |=
261                         QOS_PARAM_FLG_TXOP_TYPE_MSK;
262         if (priv->qos_data.qos_active)
263                 priv->qos_data.def_qos_parm.qos_flags |=
264                         QOS_PARAM_FLG_UPDATE_EDCA_MSK;
265
266         if (priv->current_ht_config.is_ht)
267                 priv->qos_data.def_qos_parm.qos_flags |= QOS_PARAM_FLG_TGN_MSK;
268
269         if (force || iwl_is_associated(priv)) {
270                 IWL_DEBUG_QOS(priv, "send QoS cmd with Qos active=%d FLAGS=0x%X\n",
271                                 priv->qos_data.qos_active,
272                                 priv->qos_data.def_qos_parm.qos_flags);
273
274                 iwl_send_cmd_pdu_async(priv, REPLY_QOS_PARAM,
275                                        sizeof(struct iwl_qosparam_cmd),
276                                        &priv->qos_data.def_qos_parm, NULL);
277         }
278 }
279 EXPORT_SYMBOL(iwl_activate_qos);
280
281 /*
282  * AC        CWmin         CW max      AIFSN      TXOP Limit    TXOP Limit
283  *                                              (802.11b)      (802.11a/g)
284  * AC_BK      15            1023        7           0               0
285  * AC_BE      15            1023        3           0               0
286  * AC_VI       7              15        2          6.016ms       3.008ms
287  * AC_VO       3               7        2          3.264ms       1.504ms
288  */
289 void iwl_reset_qos(struct iwl_priv *priv)
290 {
291         u16 cw_min = 15;
292         u16 cw_max = 1023;
293         u8 aifs = 2;
294         bool is_legacy = false;
295         unsigned long flags;
296         int i;
297
298         spin_lock_irqsave(&priv->lock, flags);
299         /* QoS always active in AP and ADHOC mode
300          * In STA mode wait for association
301          */
302         if (priv->iw_mode == NL80211_IFTYPE_ADHOC ||
303             priv->iw_mode == NL80211_IFTYPE_AP)
304                 priv->qos_data.qos_active = 1;
305         else
306                 priv->qos_data.qos_active = 0;
307
308         /* check for legacy mode */
309         if ((priv->iw_mode == NL80211_IFTYPE_ADHOC &&
310             (priv->active_rate & IWL_OFDM_RATES_MASK) == 0) ||
311             (priv->iw_mode == NL80211_IFTYPE_STATION &&
312             (priv->staging_rxon.flags & RXON_FLG_SHORT_SLOT_MSK) == 0)) {
313                 cw_min = 31;
314                 is_legacy = 1;
315         }
316
317         if (priv->qos_data.qos_active)
318                 aifs = 3;
319
320         /* AC_BE */
321         priv->qos_data.def_qos_parm.ac[0].cw_min = cpu_to_le16(cw_min);
322         priv->qos_data.def_qos_parm.ac[0].cw_max = cpu_to_le16(cw_max);
323         priv->qos_data.def_qos_parm.ac[0].aifsn = aifs;
324         priv->qos_data.def_qos_parm.ac[0].edca_txop = 0;
325         priv->qos_data.def_qos_parm.ac[0].reserved1 = 0;
326
327         if (priv->qos_data.qos_active) {
328                 /* AC_BK */
329                 i = 1;
330                 priv->qos_data.def_qos_parm.ac[i].cw_min = cpu_to_le16(cw_min);
331                 priv->qos_data.def_qos_parm.ac[i].cw_max = cpu_to_le16(cw_max);
332                 priv->qos_data.def_qos_parm.ac[i].aifsn = 7;
333                 priv->qos_data.def_qos_parm.ac[i].edca_txop = 0;
334                 priv->qos_data.def_qos_parm.ac[i].reserved1 = 0;
335
336                 /* AC_VI */
337                 i = 2;
338                 priv->qos_data.def_qos_parm.ac[i].cw_min =
339                         cpu_to_le16((cw_min + 1) / 2 - 1);
340                 priv->qos_data.def_qos_parm.ac[i].cw_max =
341                         cpu_to_le16(cw_min);
342                 priv->qos_data.def_qos_parm.ac[i].aifsn = 2;
343                 if (is_legacy)
344                         priv->qos_data.def_qos_parm.ac[i].edca_txop =
345                                 cpu_to_le16(6016);
346                 else
347                         priv->qos_data.def_qos_parm.ac[i].edca_txop =
348                                 cpu_to_le16(3008);
349                 priv->qos_data.def_qos_parm.ac[i].reserved1 = 0;
350
351                 /* AC_VO */
352                 i = 3;
353                 priv->qos_data.def_qos_parm.ac[i].cw_min =
354                         cpu_to_le16((cw_min + 1) / 4 - 1);
355                 priv->qos_data.def_qos_parm.ac[i].cw_max =
356                         cpu_to_le16((cw_min + 1) / 2 - 1);
357                 priv->qos_data.def_qos_parm.ac[i].aifsn = 2;
358                 priv->qos_data.def_qos_parm.ac[i].reserved1 = 0;
359                 if (is_legacy)
360                         priv->qos_data.def_qos_parm.ac[i].edca_txop =
361                                 cpu_to_le16(3264);
362                 else
363                         priv->qos_data.def_qos_parm.ac[i].edca_txop =
364                                 cpu_to_le16(1504);
365         } else {
366                 for (i = 1; i < 4; i++) {
367                         priv->qos_data.def_qos_parm.ac[i].cw_min =
368                                 cpu_to_le16(cw_min);
369                         priv->qos_data.def_qos_parm.ac[i].cw_max =
370                                 cpu_to_le16(cw_max);
371                         priv->qos_data.def_qos_parm.ac[i].aifsn = aifs;
372                         priv->qos_data.def_qos_parm.ac[i].edca_txop = 0;
373                         priv->qos_data.def_qos_parm.ac[i].reserved1 = 0;
374                 }
375         }
376         IWL_DEBUG_QOS(priv, "set QoS to default \n");
377
378         spin_unlock_irqrestore(&priv->lock, flags);
379 }
380 EXPORT_SYMBOL(iwl_reset_qos);
381
382 #define MAX_BIT_RATE_40_MHZ 150 /* Mbps */
383 #define MAX_BIT_RATE_20_MHZ 72 /* Mbps */
384 static void iwlcore_init_ht_hw_capab(const struct iwl_priv *priv,
385                               struct ieee80211_sta_ht_cap *ht_info,
386                               enum ieee80211_band band)
387 {
388         u16 max_bit_rate = 0;
389         u8 rx_chains_num = priv->hw_params.rx_chains_num;
390         u8 tx_chains_num = priv->hw_params.tx_chains_num;
391
392         ht_info->cap = 0;
393         memset(&ht_info->mcs, 0, sizeof(ht_info->mcs));
394
395         ht_info->ht_supported = true;
396
397         ht_info->cap |= IEEE80211_HT_CAP_GRN_FLD;
398         ht_info->cap |= IEEE80211_HT_CAP_SGI_20;
399         ht_info->cap |= (IEEE80211_HT_CAP_SM_PS &
400                              (WLAN_HT_CAP_SM_PS_DISABLED << 2));
401
402         max_bit_rate = MAX_BIT_RATE_20_MHZ;
403         if (priv->hw_params.fat_channel & BIT(band)) {
404                 ht_info->cap |= IEEE80211_HT_CAP_SUP_WIDTH_20_40;
405                 ht_info->cap |= IEEE80211_HT_CAP_SGI_40;
406                 ht_info->mcs.rx_mask[4] = 0x01;
407                 max_bit_rate = MAX_BIT_RATE_40_MHZ;
408         }
409
410         if (priv->cfg->mod_params->amsdu_size_8K)
411                 ht_info->cap |= IEEE80211_HT_CAP_MAX_AMSDU;
412
413         ht_info->ampdu_factor = CFG_HT_RX_AMPDU_FACTOR_DEF;
414         ht_info->ampdu_density = CFG_HT_MPDU_DENSITY_DEF;
415
416         ht_info->mcs.rx_mask[0] = 0xFF;
417         if (rx_chains_num >= 2)
418                 ht_info->mcs.rx_mask[1] = 0xFF;
419         if (rx_chains_num >= 3)
420                 ht_info->mcs.rx_mask[2] = 0xFF;
421
422         /* Highest supported Rx data rate */
423         max_bit_rate *= rx_chains_num;
424         WARN_ON(max_bit_rate & ~IEEE80211_HT_MCS_RX_HIGHEST_MASK);
425         ht_info->mcs.rx_highest = cpu_to_le16(max_bit_rate);
426
427         /* Tx MCS capabilities */
428         ht_info->mcs.tx_params = IEEE80211_HT_MCS_TX_DEFINED;
429         if (tx_chains_num != rx_chains_num) {
430                 ht_info->mcs.tx_params |= IEEE80211_HT_MCS_TX_RX_DIFF;
431                 ht_info->mcs.tx_params |= ((tx_chains_num - 1) <<
432                                 IEEE80211_HT_MCS_TX_MAX_STREAMS_SHIFT);
433         }
434 }
435
436 static void iwlcore_init_hw_rates(struct iwl_priv *priv,
437                               struct ieee80211_rate *rates)
438 {
439         int i;
440
441         for (i = 0; i < IWL_RATE_COUNT; i++) {
442                 rates[i].bitrate = iwl_rates[i].ieee * 5;
443                 rates[i].hw_value = i; /* Rate scaling will work on indexes */
444                 rates[i].hw_value_short = i;
445                 rates[i].flags = 0;
446                 if ((i > IWL_LAST_OFDM_RATE) || (i < IWL_FIRST_OFDM_RATE)) {
447                         /*
448                          * If CCK != 1M then set short preamble rate flag.
449                          */
450                         rates[i].flags |=
451                                 (iwl_rates[i].plcp == IWL_RATE_1M_PLCP) ?
452                                         0 : IEEE80211_RATE_SHORT_PREAMBLE;
453                 }
454         }
455 }
456
457
458 /**
459  * iwlcore_init_geos - Initialize mac80211's geo/channel info based from eeprom
460  */
461 int iwlcore_init_geos(struct iwl_priv *priv)
462 {
463         struct iwl_channel_info *ch;
464         struct ieee80211_supported_band *sband;
465         struct ieee80211_channel *channels;
466         struct ieee80211_channel *geo_ch;
467         struct ieee80211_rate *rates;
468         int i = 0;
469
470         if (priv->bands[IEEE80211_BAND_2GHZ].n_bitrates ||
471             priv->bands[IEEE80211_BAND_5GHZ].n_bitrates) {
472                 IWL_DEBUG_INFO(priv, "Geography modes already initialized.\n");
473                 set_bit(STATUS_GEO_CONFIGURED, &priv->status);
474                 return 0;
475         }
476
477         channels = kzalloc(sizeof(struct ieee80211_channel) *
478                            priv->channel_count, GFP_KERNEL);
479         if (!channels)
480                 return -ENOMEM;
481
482         rates = kzalloc((sizeof(struct ieee80211_rate) * (IWL_RATE_COUNT + 1)),
483                         GFP_KERNEL);
484         if (!rates) {
485                 kfree(channels);
486                 return -ENOMEM;
487         }
488
489         /* 5.2GHz channels start after the 2.4GHz channels */
490         sband = &priv->bands[IEEE80211_BAND_5GHZ];
491         sband->channels = &channels[ARRAY_SIZE(iwl_eeprom_band_1)];
492         /* just OFDM */
493         sband->bitrates = &rates[IWL_FIRST_OFDM_RATE];
494         sband->n_bitrates = IWL_RATE_COUNT - IWL_FIRST_OFDM_RATE;
495
496         if (priv->cfg->sku & IWL_SKU_N)
497                 iwlcore_init_ht_hw_capab(priv, &sband->ht_cap,
498                                          IEEE80211_BAND_5GHZ);
499
500         sband = &priv->bands[IEEE80211_BAND_2GHZ];
501         sband->channels = channels;
502         /* OFDM & CCK */
503         sband->bitrates = rates;
504         sband->n_bitrates = IWL_RATE_COUNT;
505
506         if (priv->cfg->sku & IWL_SKU_N)
507                 iwlcore_init_ht_hw_capab(priv, &sband->ht_cap,
508                                          IEEE80211_BAND_2GHZ);
509
510         priv->ieee_channels = channels;
511         priv->ieee_rates = rates;
512
513         for (i = 0;  i < priv->channel_count; i++) {
514                 ch = &priv->channel_info[i];
515
516                 /* FIXME: might be removed if scan is OK */
517                 if (!is_channel_valid(ch))
518                         continue;
519
520                 if (is_channel_a_band(ch))
521                         sband =  &priv->bands[IEEE80211_BAND_5GHZ];
522                 else
523                         sband =  &priv->bands[IEEE80211_BAND_2GHZ];
524
525                 geo_ch = &sband->channels[sband->n_channels++];
526
527                 geo_ch->center_freq =
528                                 ieee80211_channel_to_frequency(ch->channel);
529                 geo_ch->max_power = ch->max_power_avg;
530                 geo_ch->max_antenna_gain = 0xff;
531                 geo_ch->hw_value = ch->channel;
532
533                 if (is_channel_valid(ch)) {
534                         if (!(ch->flags & EEPROM_CHANNEL_IBSS))
535                                 geo_ch->flags |= IEEE80211_CHAN_NO_IBSS;
536
537                         if (!(ch->flags & EEPROM_CHANNEL_ACTIVE))
538                                 geo_ch->flags |= IEEE80211_CHAN_PASSIVE_SCAN;
539
540                         if (ch->flags & EEPROM_CHANNEL_RADAR)
541                                 geo_ch->flags |= IEEE80211_CHAN_RADAR;
542
543                         geo_ch->flags |= ch->fat_extension_channel;
544
545                         if (ch->max_power_avg > priv->tx_power_channel_lmt)
546                                 priv->tx_power_channel_lmt = ch->max_power_avg;
547                 } else {
548                         geo_ch->flags |= IEEE80211_CHAN_DISABLED;
549                 }
550
551                 /* Save flags for reg domain usage */
552                 geo_ch->orig_flags = geo_ch->flags;
553
554                 IWL_DEBUG_INFO(priv, "Channel %d Freq=%d[%sGHz] %s flag=0x%X\n",
555                                 ch->channel, geo_ch->center_freq,
556                                 is_channel_a_band(ch) ?  "5.2" : "2.4",
557                                 geo_ch->flags & IEEE80211_CHAN_DISABLED ?
558                                 "restricted" : "valid",
559                                  geo_ch->flags);
560         }
561
562         if ((priv->bands[IEEE80211_BAND_5GHZ].n_channels == 0) &&
563              priv->cfg->sku & IWL_SKU_A) {
564                 IWL_INFO(priv, "Incorrectly detected BG card as ABG. "
565                         "Please send your PCI ID 0x%04X:0x%04X to maintainer.\n",
566                            priv->pci_dev->device,
567                            priv->pci_dev->subsystem_device);
568                 priv->cfg->sku &= ~IWL_SKU_A;
569         }
570
571         IWL_INFO(priv, "Tunable channels: %d 802.11bg, %d 802.11a channels\n",
572                    priv->bands[IEEE80211_BAND_2GHZ].n_channels,
573                    priv->bands[IEEE80211_BAND_5GHZ].n_channels);
574
575         set_bit(STATUS_GEO_CONFIGURED, &priv->status);
576
577         return 0;
578 }
579 EXPORT_SYMBOL(iwlcore_init_geos);
580
581 /*
582  * iwlcore_free_geos - undo allocations in iwlcore_init_geos
583  */
584 void iwlcore_free_geos(struct iwl_priv *priv)
585 {
586         kfree(priv->ieee_channels);
587         kfree(priv->ieee_rates);
588         clear_bit(STATUS_GEO_CONFIGURED, &priv->status);
589 }
590 EXPORT_SYMBOL(iwlcore_free_geos);
591
592 static bool is_single_rx_stream(struct iwl_priv *priv)
593 {
594         return !priv->current_ht_config.is_ht ||
595                ((priv->current_ht_config.mcs.rx_mask[1] == 0) &&
596                 (priv->current_ht_config.mcs.rx_mask[2] == 0));
597 }
598
599 static u8 iwl_is_channel_extension(struct iwl_priv *priv,
600                                    enum ieee80211_band band,
601                                    u16 channel, u8 extension_chan_offset)
602 {
603         const struct iwl_channel_info *ch_info;
604
605         ch_info = iwl_get_channel_info(priv, band, channel);
606         if (!is_channel_valid(ch_info))
607                 return 0;
608
609         if (extension_chan_offset == IEEE80211_HT_PARAM_CHA_SEC_ABOVE)
610                 return !(ch_info->fat_extension_channel &
611                                         IEEE80211_CHAN_NO_HT40PLUS);
612         else if (extension_chan_offset == IEEE80211_HT_PARAM_CHA_SEC_BELOW)
613                 return !(ch_info->fat_extension_channel &
614                                         IEEE80211_CHAN_NO_HT40MINUS);
615
616         return 0;
617 }
618
619 u8 iwl_is_fat_tx_allowed(struct iwl_priv *priv,
620                          struct ieee80211_sta_ht_cap *sta_ht_inf)
621 {
622         struct iwl_ht_info *iwl_ht_conf = &priv->current_ht_config;
623
624         if ((!iwl_ht_conf->is_ht) ||
625             (iwl_ht_conf->supported_chan_width != IWL_CHANNEL_WIDTH_40MHZ))
626                 return 0;
627
628         /* We do not check for IEEE80211_HT_CAP_SUP_WIDTH_20_40
629          * the bit will not set if it is pure 40MHz case
630          */
631         if (sta_ht_inf) {
632                 if (!sta_ht_inf->ht_supported)
633                         return 0;
634         }
635         return iwl_is_channel_extension(priv, priv->band,
636                         le16_to_cpu(priv->staging_rxon.channel),
637                         iwl_ht_conf->extension_chan_offset);
638 }
639 EXPORT_SYMBOL(iwl_is_fat_tx_allowed);
640
641 static u16 iwl_adjust_beacon_interval(u16 beacon_val, u16 max_beacon_val)
642 {
643         u16 new_val = 0;
644         u16 beacon_factor = 0;
645
646         beacon_factor = (beacon_val + max_beacon_val) / max_beacon_val;
647         new_val = beacon_val / beacon_factor;
648
649         if (!new_val)
650                 new_val = max_beacon_val;
651
652         return new_val;
653 }
654
655 void iwl_setup_rxon_timing(struct iwl_priv *priv)
656 {
657         u64 tsf;
658         s32 interval_tm, rem;
659         unsigned long flags;
660         struct ieee80211_conf *conf = NULL;
661         u16 beacon_int;
662
663         conf = ieee80211_get_hw_conf(priv->hw);
664
665         spin_lock_irqsave(&priv->lock, flags);
666         priv->rxon_timing.timestamp = cpu_to_le64(priv->timestamp);
667         priv->rxon_timing.listen_interval = cpu_to_le16(conf->listen_interval);
668
669         if (priv->iw_mode == NL80211_IFTYPE_STATION) {
670                 beacon_int = priv->beacon_int;
671                 priv->rxon_timing.atim_window = 0;
672         } else {
673                 beacon_int = priv->vif->bss_conf.beacon_int;
674
675                 /* TODO: we need to get atim_window from upper stack
676                  * for now we set to 0 */
677                 priv->rxon_timing.atim_window = 0;
678         }
679
680         beacon_int = iwl_adjust_beacon_interval(beacon_int,
681                                 priv->hw_params.max_beacon_itrvl * 1024);
682         priv->rxon_timing.beacon_interval = cpu_to_le16(beacon_int);
683
684         tsf = priv->timestamp; /* tsf is modifed by do_div: copy it */
685         interval_tm = beacon_int * 1024;
686         rem = do_div(tsf, interval_tm);
687         priv->rxon_timing.beacon_init_val = cpu_to_le32(interval_tm - rem);
688
689         spin_unlock_irqrestore(&priv->lock, flags);
690         IWL_DEBUG_ASSOC(priv,
691                         "beacon interval %d beacon timer %d beacon tim %d\n",
692                         le16_to_cpu(priv->rxon_timing.beacon_interval),
693                         le32_to_cpu(priv->rxon_timing.beacon_init_val),
694                         le16_to_cpu(priv->rxon_timing.atim_window));
695 }
696 EXPORT_SYMBOL(iwl_setup_rxon_timing);
697
698 void iwl_set_rxon_hwcrypto(struct iwl_priv *priv, int hw_decrypt)
699 {
700         struct iwl_rxon_cmd *rxon = &priv->staging_rxon;
701
702         if (hw_decrypt)
703                 rxon->filter_flags &= ~RXON_FILTER_DIS_DECRYPT_MSK;
704         else
705                 rxon->filter_flags |= RXON_FILTER_DIS_DECRYPT_MSK;
706
707 }
708 EXPORT_SYMBOL(iwl_set_rxon_hwcrypto);
709
710 /**
711  * iwl_check_rxon_cmd - validate RXON structure is valid
712  *
713  * NOTE:  This is really only useful during development and can eventually
714  * be #ifdef'd out once the driver is stable and folks aren't actively
715  * making changes
716  */
717 int iwl_check_rxon_cmd(struct iwl_priv *priv)
718 {
719         int error = 0;
720         int counter = 1;
721         struct iwl_rxon_cmd *rxon = &priv->staging_rxon;
722
723         if (rxon->flags & RXON_FLG_BAND_24G_MSK) {
724                 error |= le32_to_cpu(rxon->flags &
725                                 (RXON_FLG_TGJ_NARROW_BAND_MSK |
726                                  RXON_FLG_RADAR_DETECT_MSK));
727                 if (error)
728                         IWL_WARN(priv, "check 24G fields %d | %d\n",
729                                     counter++, error);
730         } else {
731                 error |= (rxon->flags & RXON_FLG_SHORT_SLOT_MSK) ?
732                                 0 : le32_to_cpu(RXON_FLG_SHORT_SLOT_MSK);
733                 if (error)
734                         IWL_WARN(priv, "check 52 fields %d | %d\n",
735                                     counter++, error);
736                 error |= le32_to_cpu(rxon->flags & RXON_FLG_CCK_MSK);
737                 if (error)
738                         IWL_WARN(priv, "check 52 CCK %d | %d\n",
739                                     counter++, error);
740         }
741         error |= (rxon->node_addr[0] | rxon->bssid_addr[0]) & 0x1;
742         if (error)
743                 IWL_WARN(priv, "check mac addr %d | %d\n", counter++, error);
744
745         /* make sure basic rates 6Mbps and 1Mbps are supported */
746         error |= (((rxon->ofdm_basic_rates & IWL_RATE_6M_MASK) == 0) &&
747                   ((rxon->cck_basic_rates & IWL_RATE_1M_MASK) == 0));
748         if (error)
749                 IWL_WARN(priv, "check basic rate %d | %d\n", counter++, error);
750
751         error |= (le16_to_cpu(rxon->assoc_id) > 2007);
752         if (error)
753                 IWL_WARN(priv, "check assoc id %d | %d\n", counter++, error);
754
755         error |= ((rxon->flags & (RXON_FLG_CCK_MSK | RXON_FLG_SHORT_SLOT_MSK))
756                         == (RXON_FLG_CCK_MSK | RXON_FLG_SHORT_SLOT_MSK));
757         if (error)
758                 IWL_WARN(priv, "check CCK and short slot %d | %d\n",
759                             counter++, error);
760
761         error |= ((rxon->flags & (RXON_FLG_CCK_MSK | RXON_FLG_AUTO_DETECT_MSK))
762                         == (RXON_FLG_CCK_MSK | RXON_FLG_AUTO_DETECT_MSK));
763         if (error)
764                 IWL_WARN(priv, "check CCK & auto detect %d | %d\n",
765                             counter++, error);
766
767         error |= ((rxon->flags & (RXON_FLG_AUTO_DETECT_MSK |
768                         RXON_FLG_TGG_PROTECT_MSK)) == RXON_FLG_TGG_PROTECT_MSK);
769         if (error)
770                 IWL_WARN(priv, "check TGG and auto detect %d | %d\n",
771                             counter++, error);
772
773         if (error)
774                 IWL_WARN(priv, "Tuning to channel %d\n",
775                             le16_to_cpu(rxon->channel));
776
777         if (error) {
778                 IWL_ERR(priv, "Not a valid iwl_rxon_assoc_cmd field values\n");
779                 return -1;
780         }
781         return 0;
782 }
783 EXPORT_SYMBOL(iwl_check_rxon_cmd);
784
785 /**
786  * iwl_full_rxon_required - check if full RXON (vs RXON_ASSOC) cmd is needed
787  * @priv: staging_rxon is compared to active_rxon
788  *
789  * If the RXON structure is changing enough to require a new tune,
790  * or is clearing the RXON_FILTER_ASSOC_MSK, then return 1 to indicate that
791  * a new tune (full RXON command, rather than RXON_ASSOC cmd) is required.
792  */
793 int iwl_full_rxon_required(struct iwl_priv *priv)
794 {
795
796         /* These items are only settable from the full RXON command */
797         if (!(iwl_is_associated(priv)) ||
798             compare_ether_addr(priv->staging_rxon.bssid_addr,
799                                priv->active_rxon.bssid_addr) ||
800             compare_ether_addr(priv->staging_rxon.node_addr,
801                                priv->active_rxon.node_addr) ||
802             compare_ether_addr(priv->staging_rxon.wlap_bssid_addr,
803                                priv->active_rxon.wlap_bssid_addr) ||
804             (priv->staging_rxon.dev_type != priv->active_rxon.dev_type) ||
805             (priv->staging_rxon.channel != priv->active_rxon.channel) ||
806             (priv->staging_rxon.air_propagation !=
807              priv->active_rxon.air_propagation) ||
808             (priv->staging_rxon.ofdm_ht_single_stream_basic_rates !=
809              priv->active_rxon.ofdm_ht_single_stream_basic_rates) ||
810             (priv->staging_rxon.ofdm_ht_dual_stream_basic_rates !=
811              priv->active_rxon.ofdm_ht_dual_stream_basic_rates) ||
812             (priv->staging_rxon.ofdm_ht_triple_stream_basic_rates !=
813              priv->active_rxon.ofdm_ht_triple_stream_basic_rates) ||
814             (priv->staging_rxon.assoc_id != priv->active_rxon.assoc_id))
815                 return 1;
816
817         /* flags, filter_flags, ofdm_basic_rates, and cck_basic_rates can
818          * be updated with the RXON_ASSOC command -- however only some
819          * flag transitions are allowed using RXON_ASSOC */
820
821         /* Check if we are not switching bands */
822         if ((priv->staging_rxon.flags & RXON_FLG_BAND_24G_MSK) !=
823             (priv->active_rxon.flags & RXON_FLG_BAND_24G_MSK))
824                 return 1;
825
826         /* Check if we are switching association toggle */
827         if ((priv->staging_rxon.filter_flags & RXON_FILTER_ASSOC_MSK) !=
828                 (priv->active_rxon.filter_flags & RXON_FILTER_ASSOC_MSK))
829                 return 1;
830
831         return 0;
832 }
833 EXPORT_SYMBOL(iwl_full_rxon_required);
834
835 u8 iwl_rate_get_lowest_plcp(struct iwl_priv *priv)
836 {
837         int i;
838         int rate_mask;
839
840         /* Set rate mask*/
841         if (priv->staging_rxon.flags & RXON_FLG_BAND_24G_MSK)
842                 rate_mask = priv->active_rate_basic & IWL_CCK_RATES_MASK;
843         else
844                 rate_mask = priv->active_rate_basic & IWL_OFDM_RATES_MASK;
845
846         /* Find lowest valid rate */
847         for (i = IWL_RATE_1M_INDEX; i != IWL_RATE_INVALID;
848                                         i = iwl_rates[i].next_ieee) {
849                 if (rate_mask & (1 << i))
850                         return iwl_rates[i].plcp;
851         }
852
853         /* No valid rate was found. Assign the lowest one */
854         if (priv->staging_rxon.flags & RXON_FLG_BAND_24G_MSK)
855                 return IWL_RATE_1M_PLCP;
856         else
857                 return IWL_RATE_6M_PLCP;
858 }
859 EXPORT_SYMBOL(iwl_rate_get_lowest_plcp);
860
861 void iwl_set_rxon_ht(struct iwl_priv *priv, struct iwl_ht_info *ht_info)
862 {
863         struct iwl_rxon_cmd *rxon = &priv->staging_rxon;
864
865         if (!ht_info->is_ht) {
866                 rxon->flags &= ~(RXON_FLG_CHANNEL_MODE_MSK |
867                         RXON_FLG_CTRL_CHANNEL_LOC_HI_MSK |
868                         RXON_FLG_FAT_PROT_MSK |
869                         RXON_FLG_HT_PROT_MSK);
870                 return;
871         }
872
873         /* FIXME: if the definition of ht_protection changed, the "translation"
874          * will be needed for rxon->flags
875          */
876         rxon->flags |= cpu_to_le32(ht_info->ht_protection << RXON_FLG_HT_OPERATING_MODE_POS);
877
878         /* Set up channel bandwidth:
879          * 20 MHz only, 20/40 mixed or pure 40 if fat ok */
880         /* clear the HT channel mode before set the mode */
881         rxon->flags &= ~(RXON_FLG_CHANNEL_MODE_MSK |
882                          RXON_FLG_CTRL_CHANNEL_LOC_HI_MSK);
883         if (iwl_is_fat_tx_allowed(priv, NULL)) {
884                 /* pure 40 fat */
885                 if (ht_info->ht_protection == IEEE80211_HT_OP_MODE_PROTECTION_20MHZ) {
886                         rxon->flags |= RXON_FLG_CHANNEL_MODE_PURE_40;
887                         /* Note: control channel is opposite of extension channel */
888                         switch (ht_info->extension_chan_offset) {
889                         case IEEE80211_HT_PARAM_CHA_SEC_ABOVE:
890                                 rxon->flags &= ~RXON_FLG_CTRL_CHANNEL_LOC_HI_MSK;
891                                 break;
892                         case IEEE80211_HT_PARAM_CHA_SEC_BELOW:
893                                 rxon->flags |= RXON_FLG_CTRL_CHANNEL_LOC_HI_MSK;
894                                 break;
895                         }
896                 } else {
897                         /* Note: control channel is opposite of extension channel */
898                         switch (ht_info->extension_chan_offset) {
899                         case IEEE80211_HT_PARAM_CHA_SEC_ABOVE:
900                                 rxon->flags &= ~(RXON_FLG_CTRL_CHANNEL_LOC_HI_MSK);
901                                 rxon->flags |= RXON_FLG_CHANNEL_MODE_MIXED;
902                                 break;
903                         case IEEE80211_HT_PARAM_CHA_SEC_BELOW:
904                                 rxon->flags |= RXON_FLG_CTRL_CHANNEL_LOC_HI_MSK;
905                                 rxon->flags |= RXON_FLG_CHANNEL_MODE_MIXED;
906                                 break;
907                         case IEEE80211_HT_PARAM_CHA_SEC_NONE:
908                         default:
909                                 /* channel location only valid if in Mixed mode */
910                                 IWL_ERR(priv, "invalid extension channel offset\n");
911                                 break;
912                         }
913                 }
914         } else {
915                 rxon->flags |= RXON_FLG_CHANNEL_MODE_LEGACY;
916         }
917
918         if (priv->cfg->ops->hcmd->set_rxon_chain)
919                 priv->cfg->ops->hcmd->set_rxon_chain(priv);
920
921         IWL_DEBUG_ASSOC(priv, "supported HT rate 0x%X 0x%X 0x%X "
922                         "rxon flags 0x%X operation mode :0x%X "
923                         "extension channel offset 0x%x\n",
924                         ht_info->mcs.rx_mask[0],
925                         ht_info->mcs.rx_mask[1],
926                         ht_info->mcs.rx_mask[2],
927                         le32_to_cpu(rxon->flags), ht_info->ht_protection,
928                         ht_info->extension_chan_offset);
929         return;
930 }
931 EXPORT_SYMBOL(iwl_set_rxon_ht);
932
933 #define IWL_NUM_RX_CHAINS_MULTIPLE      3
934 #define IWL_NUM_RX_CHAINS_SINGLE        2
935 #define IWL_NUM_IDLE_CHAINS_DUAL        2
936 #define IWL_NUM_IDLE_CHAINS_SINGLE      1
937
938 /* Determine how many receiver/antenna chains to use.
939  * More provides better reception via diversity.  Fewer saves power.
940  * MIMO (dual stream) requires at least 2, but works better with 3.
941  * This does not determine *which* chains to use, just how many.
942  */
943 static int iwl_get_active_rx_chain_count(struct iwl_priv *priv)
944 {
945         bool is_single = is_single_rx_stream(priv);
946         bool is_cam = !test_bit(STATUS_POWER_PMI, &priv->status);
947
948         /* # of Rx chains to use when expecting MIMO. */
949         if (is_single || (!is_cam && (priv->current_ht_config.sm_ps ==
950                                                  WLAN_HT_CAP_SM_PS_STATIC)))
951                 return IWL_NUM_RX_CHAINS_SINGLE;
952         else
953                 return IWL_NUM_RX_CHAINS_MULTIPLE;
954 }
955
956 static int iwl_get_idle_rx_chain_count(struct iwl_priv *priv, int active_cnt)
957 {
958         int idle_cnt;
959         bool is_cam = !test_bit(STATUS_POWER_PMI, &priv->status);
960         /* # Rx chains when idling and maybe trying to save power */
961         switch (priv->current_ht_config.sm_ps) {
962         case WLAN_HT_CAP_SM_PS_STATIC:
963         case WLAN_HT_CAP_SM_PS_DYNAMIC:
964                 idle_cnt = (is_cam) ? IWL_NUM_IDLE_CHAINS_DUAL :
965                                         IWL_NUM_IDLE_CHAINS_SINGLE;
966                 break;
967         case WLAN_HT_CAP_SM_PS_DISABLED:
968                 idle_cnt = (is_cam) ? active_cnt : IWL_NUM_IDLE_CHAINS_SINGLE;
969                 break;
970         case WLAN_HT_CAP_SM_PS_INVALID:
971         default:
972                 IWL_ERR(priv, "invalid mimo ps mode %d\n",
973                            priv->current_ht_config.sm_ps);
974                 WARN_ON(1);
975                 idle_cnt = -1;
976                 break;
977         }
978         return idle_cnt;
979 }
980
981 /* up to 4 chains */
982 static u8 iwl_count_chain_bitmap(u32 chain_bitmap)
983 {
984         u8 res;
985         res = (chain_bitmap & BIT(0)) >> 0;
986         res += (chain_bitmap & BIT(1)) >> 1;
987         res += (chain_bitmap & BIT(2)) >> 2;
988         res += (chain_bitmap & BIT(4)) >> 4;
989         return res;
990 }
991
992 /**
993  * iwl_is_monitor_mode - Determine if interface in monitor mode
994  *
995  * priv->iw_mode is set in add_interface, but add_interface is
996  * never called for monitor mode. The only way mac80211 informs us about
997  * monitor mode is through configuring filters (call to configure_filter).
998  */
999 bool iwl_is_monitor_mode(struct iwl_priv *priv)
1000 {
1001         return !!(priv->staging_rxon.filter_flags & RXON_FILTER_PROMISC_MSK);
1002 }
1003 EXPORT_SYMBOL(iwl_is_monitor_mode);
1004
1005 /**
1006  * iwl_set_rxon_chain - Set up Rx chain usage in "staging" RXON image
1007  *
1008  * Selects how many and which Rx receivers/antennas/chains to use.
1009  * This should not be used for scan command ... it puts data in wrong place.
1010  */
1011 void iwl_set_rxon_chain(struct iwl_priv *priv)
1012 {
1013         bool is_single = is_single_rx_stream(priv);
1014         bool is_cam = !test_bit(STATUS_POWER_PMI, &priv->status);
1015         u8 idle_rx_cnt, active_rx_cnt, valid_rx_cnt;
1016         u32 active_chains;
1017         u16 rx_chain;
1018
1019         /* Tell uCode which antennas are actually connected.
1020          * Before first association, we assume all antennas are connected.
1021          * Just after first association, iwl_chain_noise_calibration()
1022          *    checks which antennas actually *are* connected. */
1023          if (priv->chain_noise_data.active_chains)
1024                 active_chains = priv->chain_noise_data.active_chains;
1025         else
1026                 active_chains = priv->hw_params.valid_rx_ant;
1027
1028         rx_chain = active_chains << RXON_RX_CHAIN_VALID_POS;
1029
1030         /* How many receivers should we use? */
1031         active_rx_cnt = iwl_get_active_rx_chain_count(priv);
1032         idle_rx_cnt = iwl_get_idle_rx_chain_count(priv, active_rx_cnt);
1033
1034
1035         /* correct rx chain count according hw settings
1036          * and chain noise calibration
1037          */
1038         valid_rx_cnt = iwl_count_chain_bitmap(active_chains);
1039         if (valid_rx_cnt < active_rx_cnt)
1040                 active_rx_cnt = valid_rx_cnt;
1041
1042         if (valid_rx_cnt < idle_rx_cnt)
1043                 idle_rx_cnt = valid_rx_cnt;
1044
1045         rx_chain |= active_rx_cnt << RXON_RX_CHAIN_MIMO_CNT_POS;
1046         rx_chain |= idle_rx_cnt  << RXON_RX_CHAIN_CNT_POS;
1047
1048         /* copied from 'iwl_bg_request_scan()' */
1049         /* Force use of chains B and C (0x6) for Rx for 4965
1050          * Avoid A (0x1) because of its off-channel reception on A-band.
1051          * MIMO is not used here, but value is required */
1052         if (iwl_is_monitor_mode(priv) &&
1053             !(priv->staging_rxon.flags & RXON_FLG_BAND_24G_MSK) &&
1054             ((priv->hw_rev & CSR_HW_REV_TYPE_MSK) == CSR_HW_REV_TYPE_4965)) {
1055                 rx_chain = ANT_ABC << RXON_RX_CHAIN_VALID_POS;
1056                 rx_chain |= ANT_BC << RXON_RX_CHAIN_FORCE_SEL_POS;
1057                 rx_chain |= ANT_ABC << RXON_RX_CHAIN_FORCE_MIMO_SEL_POS;
1058                 rx_chain |= 0x1 << RXON_RX_CHAIN_DRIVER_FORCE_POS;
1059         }
1060
1061         priv->staging_rxon.rx_chain = cpu_to_le16(rx_chain);
1062
1063         if (!is_single && (active_rx_cnt >= IWL_NUM_RX_CHAINS_SINGLE) && is_cam)
1064                 priv->staging_rxon.rx_chain |= RXON_RX_CHAIN_MIMO_FORCE_MSK;
1065         else
1066                 priv->staging_rxon.rx_chain &= ~RXON_RX_CHAIN_MIMO_FORCE_MSK;
1067
1068         IWL_DEBUG_ASSOC(priv, "rx_chain=0x%X active=%d idle=%d\n",
1069                         priv->staging_rxon.rx_chain,
1070                         active_rx_cnt, idle_rx_cnt);
1071
1072         WARN_ON(active_rx_cnt == 0 || idle_rx_cnt == 0 ||
1073                 active_rx_cnt < idle_rx_cnt);
1074 }
1075 EXPORT_SYMBOL(iwl_set_rxon_chain);
1076
1077 /**
1078  * iwl_set_rxon_channel - Set the phymode and channel values in staging RXON
1079  * @phymode: MODE_IEEE80211A sets to 5.2GHz; all else set to 2.4GHz
1080  * @channel: Any channel valid for the requested phymode
1081
1082  * In addition to setting the staging RXON, priv->phymode is also set.
1083  *
1084  * NOTE:  Does not commit to the hardware; it sets appropriate bit fields
1085  * in the staging RXON flag structure based on the phymode
1086  */
1087 int iwl_set_rxon_channel(struct iwl_priv *priv, struct ieee80211_channel *ch)
1088 {
1089         enum ieee80211_band band = ch->band;
1090         u16 channel = ieee80211_frequency_to_channel(ch->center_freq);
1091
1092         if (!iwl_get_channel_info(priv, band, channel)) {
1093                 IWL_DEBUG_INFO(priv, "Could not set channel to %d [%d]\n",
1094                                channel, band);
1095                 return -EINVAL;
1096         }
1097
1098         if ((le16_to_cpu(priv->staging_rxon.channel) == channel) &&
1099             (priv->band == band))
1100                 return 0;
1101
1102         priv->staging_rxon.channel = cpu_to_le16(channel);
1103         if (band == IEEE80211_BAND_5GHZ)
1104                 priv->staging_rxon.flags &= ~RXON_FLG_BAND_24G_MSK;
1105         else
1106                 priv->staging_rxon.flags |= RXON_FLG_BAND_24G_MSK;
1107
1108         priv->band = band;
1109
1110         IWL_DEBUG_INFO(priv, "Staging channel set to %d [%d]\n", channel, band);
1111
1112         return 0;
1113 }
1114 EXPORT_SYMBOL(iwl_set_rxon_channel);
1115
1116 void iwl_set_flags_for_band(struct iwl_priv *priv,
1117                             enum ieee80211_band band)
1118 {
1119         if (band == IEEE80211_BAND_5GHZ) {
1120                 priv->staging_rxon.flags &=
1121                     ~(RXON_FLG_BAND_24G_MSK | RXON_FLG_AUTO_DETECT_MSK
1122                       | RXON_FLG_CCK_MSK);
1123                 priv->staging_rxon.flags |= RXON_FLG_SHORT_SLOT_MSK;
1124         } else {
1125                 /* Copied from iwl_post_associate() */
1126                 if (priv->assoc_capability & WLAN_CAPABILITY_SHORT_SLOT_TIME)
1127                         priv->staging_rxon.flags |= RXON_FLG_SHORT_SLOT_MSK;
1128                 else
1129                         priv->staging_rxon.flags &= ~RXON_FLG_SHORT_SLOT_MSK;
1130
1131                 if (priv->iw_mode == NL80211_IFTYPE_ADHOC)
1132                         priv->staging_rxon.flags &= ~RXON_FLG_SHORT_SLOT_MSK;
1133
1134                 priv->staging_rxon.flags |= RXON_FLG_BAND_24G_MSK;
1135                 priv->staging_rxon.flags |= RXON_FLG_AUTO_DETECT_MSK;
1136                 priv->staging_rxon.flags &= ~RXON_FLG_CCK_MSK;
1137         }
1138 }
1139 EXPORT_SYMBOL(iwl_set_flags_for_band);
1140
1141 /*
1142  * initialize rxon structure with default values from eeprom
1143  */
1144 void iwl_connection_init_rx_config(struct iwl_priv *priv, int mode)
1145 {
1146         const struct iwl_channel_info *ch_info;
1147
1148         memset(&priv->staging_rxon, 0, sizeof(priv->staging_rxon));
1149
1150         switch (mode) {
1151         case NL80211_IFTYPE_AP:
1152                 priv->staging_rxon.dev_type = RXON_DEV_TYPE_AP;
1153                 break;
1154
1155         case NL80211_IFTYPE_STATION:
1156                 priv->staging_rxon.dev_type = RXON_DEV_TYPE_ESS;
1157                 priv->staging_rxon.filter_flags = RXON_FILTER_ACCEPT_GRP_MSK;
1158                 break;
1159
1160         case NL80211_IFTYPE_ADHOC:
1161                 priv->staging_rxon.dev_type = RXON_DEV_TYPE_IBSS;
1162                 priv->staging_rxon.flags = RXON_FLG_SHORT_PREAMBLE_MSK;
1163                 priv->staging_rxon.filter_flags = RXON_FILTER_BCON_AWARE_MSK |
1164                                                   RXON_FILTER_ACCEPT_GRP_MSK;
1165                 break;
1166
1167         default:
1168                 IWL_ERR(priv, "Unsupported interface type %d\n", mode);
1169                 break;
1170         }
1171
1172 #if 0
1173         /* TODO:  Figure out when short_preamble would be set and cache from
1174          * that */
1175         if (!hw_to_local(priv->hw)->short_preamble)
1176                 priv->staging_rxon.flags &= ~RXON_FLG_SHORT_PREAMBLE_MSK;
1177         else
1178                 priv->staging_rxon.flags |= RXON_FLG_SHORT_PREAMBLE_MSK;
1179 #endif
1180
1181         ch_info = iwl_get_channel_info(priv, priv->band,
1182                                        le16_to_cpu(priv->active_rxon.channel));
1183
1184         if (!ch_info)
1185                 ch_info = &priv->channel_info[0];
1186
1187         /*
1188          * in some case A channels are all non IBSS
1189          * in this case force B/G channel
1190          */
1191         if ((priv->iw_mode == NL80211_IFTYPE_ADHOC) &&
1192             !(is_channel_ibss(ch_info)))
1193                 ch_info = &priv->channel_info[0];
1194
1195         priv->staging_rxon.channel = cpu_to_le16(ch_info->channel);
1196         priv->band = ch_info->band;
1197
1198         iwl_set_flags_for_band(priv, priv->band);
1199
1200         priv->staging_rxon.ofdm_basic_rates =
1201             (IWL_OFDM_RATES_MASK >> IWL_FIRST_OFDM_RATE) & 0xFF;
1202         priv->staging_rxon.cck_basic_rates =
1203             (IWL_CCK_RATES_MASK >> IWL_FIRST_CCK_RATE) & 0xF;
1204
1205         /* clear both MIX and PURE40 mode flag */
1206         priv->staging_rxon.flags &= ~(RXON_FLG_CHANNEL_MODE_MIXED |
1207                                         RXON_FLG_CHANNEL_MODE_PURE_40);
1208         memcpy(priv->staging_rxon.node_addr, priv->mac_addr, ETH_ALEN);
1209         memcpy(priv->staging_rxon.wlap_bssid_addr, priv->mac_addr, ETH_ALEN);
1210         priv->staging_rxon.ofdm_ht_single_stream_basic_rates = 0xff;
1211         priv->staging_rxon.ofdm_ht_dual_stream_basic_rates = 0xff;
1212         priv->staging_rxon.ofdm_ht_triple_stream_basic_rates = 0xff;
1213 }
1214 EXPORT_SYMBOL(iwl_connection_init_rx_config);
1215
1216 static void iwl_set_rate(struct iwl_priv *priv)
1217 {
1218         const struct ieee80211_supported_band *hw = NULL;
1219         struct ieee80211_rate *rate;
1220         int i;
1221
1222         hw = iwl_get_hw_mode(priv, priv->band);
1223         if (!hw) {
1224                 IWL_ERR(priv, "Failed to set rate: unable to get hw mode\n");
1225                 return;
1226         }
1227
1228         priv->active_rate = 0;
1229         priv->active_rate_basic = 0;
1230
1231         for (i = 0; i < hw->n_bitrates; i++) {
1232                 rate = &(hw->bitrates[i]);
1233                 if (rate->hw_value < IWL_RATE_COUNT)
1234                         priv->active_rate |= (1 << rate->hw_value);
1235         }
1236
1237         IWL_DEBUG_RATE(priv, "Set active_rate = %0x, active_rate_basic = %0x\n",
1238                        priv->active_rate, priv->active_rate_basic);
1239
1240         /*
1241          * If a basic rate is configured, then use it (adding IWL_RATE_1M_MASK)
1242          * otherwise set it to the default of all CCK rates and 6, 12, 24 for
1243          * OFDM
1244          */
1245         if (priv->active_rate_basic & IWL_CCK_BASIC_RATES_MASK)
1246                 priv->staging_rxon.cck_basic_rates =
1247                     ((priv->active_rate_basic &
1248                       IWL_CCK_RATES_MASK) >> IWL_FIRST_CCK_RATE) & 0xF;
1249         else
1250                 priv->staging_rxon.cck_basic_rates =
1251                     (IWL_CCK_BASIC_RATES_MASK >> IWL_FIRST_CCK_RATE) & 0xF;
1252
1253         if (priv->active_rate_basic & IWL_OFDM_BASIC_RATES_MASK)
1254                 priv->staging_rxon.ofdm_basic_rates =
1255                     ((priv->active_rate_basic &
1256                       (IWL_OFDM_BASIC_RATES_MASK | IWL_RATE_6M_MASK)) >>
1257                       IWL_FIRST_OFDM_RATE) & 0xFF;
1258         else
1259                 priv->staging_rxon.ofdm_basic_rates =
1260                    (IWL_OFDM_BASIC_RATES_MASK >> IWL_FIRST_OFDM_RATE) & 0xFF;
1261 }
1262
1263 void iwl_rx_csa(struct iwl_priv *priv, struct iwl_rx_mem_buffer *rxb)
1264 {
1265         struct iwl_rx_packet *pkt = (struct iwl_rx_packet *)rxb->skb->data;
1266         struct iwl_rxon_cmd *rxon = (void *)&priv->active_rxon;
1267         struct iwl_csa_notification *csa = &(pkt->u.csa_notif);
1268         IWL_DEBUG_11H(priv, "CSA notif: channel %d, status %d\n",
1269                       le16_to_cpu(csa->channel), le32_to_cpu(csa->status));
1270         rxon->channel = csa->channel;
1271         priv->staging_rxon.channel = csa->channel;
1272 }
1273 EXPORT_SYMBOL(iwl_rx_csa);
1274
1275 #ifdef CONFIG_IWLWIFI_DEBUG
1276 static void iwl_print_rx_config_cmd(struct iwl_priv *priv)
1277 {
1278         struct iwl_rxon_cmd *rxon = &priv->staging_rxon;
1279
1280         IWL_DEBUG_RADIO(priv, "RX CONFIG:\n");
1281         iwl_print_hex_dump(IWL_DL_RADIO, (u8 *) rxon, sizeof(*rxon));
1282         IWL_DEBUG_RADIO(priv, "u16 channel: 0x%x\n", le16_to_cpu(rxon->channel));
1283         IWL_DEBUG_RADIO(priv, "u32 flags: 0x%08X\n", le32_to_cpu(rxon->flags));
1284         IWL_DEBUG_RADIO(priv, "u32 filter_flags: 0x%08x\n",
1285                         le32_to_cpu(rxon->filter_flags));
1286         IWL_DEBUG_RADIO(priv, "u8 dev_type: 0x%x\n", rxon->dev_type);
1287         IWL_DEBUG_RADIO(priv, "u8 ofdm_basic_rates: 0x%02x\n",
1288                         rxon->ofdm_basic_rates);
1289         IWL_DEBUG_RADIO(priv, "u8 cck_basic_rates: 0x%02x\n", rxon->cck_basic_rates);
1290         IWL_DEBUG_RADIO(priv, "u8[6] node_addr: %pM\n", rxon->node_addr);
1291         IWL_DEBUG_RADIO(priv, "u8[6] bssid_addr: %pM\n", rxon->bssid_addr);
1292         IWL_DEBUG_RADIO(priv, "u16 assoc_id: 0x%x\n", le16_to_cpu(rxon->assoc_id));
1293 }
1294 #endif
1295
1296 static const char *desc_lookup_text[] = {
1297         "OK",
1298         "FAIL",
1299         "BAD_PARAM",
1300         "BAD_CHECKSUM",
1301         "NMI_INTERRUPT_WDG",
1302         "SYSASSERT",
1303         "FATAL_ERROR",
1304         "BAD_COMMAND",
1305         "HW_ERROR_TUNE_LOCK",
1306         "HW_ERROR_TEMPERATURE",
1307         "ILLEGAL_CHAN_FREQ",
1308         "VCC_NOT_STABLE",
1309         "FH_ERROR",
1310         "NMI_INTERRUPT_HOST",
1311         "NMI_INTERRUPT_ACTION_PT",
1312         "NMI_INTERRUPT_UNKNOWN",
1313         "UCODE_VERSION_MISMATCH",
1314         "HW_ERROR_ABS_LOCK",
1315         "HW_ERROR_CAL_LOCK_FAIL",
1316         "NMI_INTERRUPT_INST_ACTION_PT",
1317         "NMI_INTERRUPT_DATA_ACTION_PT",
1318         "NMI_TRM_HW_ER",
1319         "NMI_INTERRUPT_TRM",
1320         "NMI_INTERRUPT_BREAK_POINT"
1321         "DEBUG_0",
1322         "DEBUG_1",
1323         "DEBUG_2",
1324         "DEBUG_3",
1325         "UNKNOWN"
1326 };
1327
1328 static const char *desc_lookup(int i)
1329 {
1330         int max = ARRAY_SIZE(desc_lookup_text) - 1;
1331
1332         if (i < 0 || i > max)
1333                 i = max;
1334
1335         return desc_lookup_text[i];
1336 }
1337
1338 #define ERROR_START_OFFSET  (1 * sizeof(u32))
1339 #define ERROR_ELEM_SIZE     (7 * sizeof(u32))
1340
1341 static void iwl_dump_nic_error_log(struct iwl_priv *priv)
1342 {
1343         u32 data2, line;
1344         u32 desc, time, count, base, data1;
1345         u32 blink1, blink2, ilink1, ilink2;
1346
1347         switch (priv->ucode_type) {
1348         case UCODE_RT:
1349                 base = le32_to_cpu(priv->card_alive.error_event_table_ptr);
1350                 break;
1351         case UCODE_INIT:
1352                 base = le32_to_cpu(priv->card_alive_init.error_event_table_ptr);
1353                 break;
1354         default:
1355                 IWL_ERR(priv, "uCode image not available\n");
1356                 return;
1357         }
1358
1359         if (!priv->cfg->ops->lib->is_valid_rtc_data_addr(base)) {
1360                 IWL_ERR(priv, "Not valid error log pointer 0x%08X\n", base);
1361                 return;
1362         }
1363
1364         count = iwl_read_targ_mem(priv, base);
1365
1366         if (ERROR_START_OFFSET <= count * ERROR_ELEM_SIZE) {
1367                 IWL_ERR(priv, "Start IWL Error Log Dump:\n");
1368                 IWL_ERR(priv, "Status: 0x%08lX, count: %d\n",
1369                         priv->status, count);
1370         }
1371
1372         desc = iwl_read_targ_mem(priv, base + 1 * sizeof(u32));
1373         blink1 = iwl_read_targ_mem(priv, base + 3 * sizeof(u32));
1374         blink2 = iwl_read_targ_mem(priv, base + 4 * sizeof(u32));
1375         ilink1 = iwl_read_targ_mem(priv, base + 5 * sizeof(u32));
1376         ilink2 = iwl_read_targ_mem(priv, base + 6 * sizeof(u32));
1377         data1 = iwl_read_targ_mem(priv, base + 7 * sizeof(u32));
1378         data2 = iwl_read_targ_mem(priv, base + 8 * sizeof(u32));
1379         line = iwl_read_targ_mem(priv, base + 9 * sizeof(u32));
1380         time = iwl_read_targ_mem(priv, base + 11 * sizeof(u32));
1381
1382         IWL_ERR(priv, "Desc                               Time       "
1383                 "data1      data2      line\n");
1384         IWL_ERR(priv, "%-28s (#%02d) %010u 0x%08X 0x%08X %u\n",
1385                 desc_lookup(desc), desc, time, data1, data2, line);
1386         IWL_ERR(priv, "blink1  blink2  ilink1  ilink2\n");
1387         IWL_ERR(priv, "0x%05X 0x%05X 0x%05X 0x%05X\n", blink1, blink2,
1388                 ilink1, ilink2);
1389
1390 }
1391
1392 #define EVENT_START_OFFSET  (4 * sizeof(u32))
1393
1394 /**
1395  * iwl_print_event_log - Dump error event log to syslog
1396  *
1397  */
1398 static void iwl_print_event_log(struct iwl_priv *priv, u32 start_idx,
1399                                 u32 num_events, u32 mode)
1400 {
1401         u32 i;
1402         u32 base;       /* SRAM byte address of event log header */
1403         u32 event_size; /* 2 u32s, or 3 u32s if timestamp recorded */
1404         u32 ptr;        /* SRAM byte address of log data */
1405         u32 ev, time, data; /* event log data */
1406
1407         if (num_events == 0)
1408                 return;
1409         switch (priv->ucode_type) {
1410         case UCODE_RT:
1411                 base = le32_to_cpu(priv->card_alive.log_event_table_ptr);
1412                 break;
1413         case UCODE_INIT:
1414                 base = le32_to_cpu(priv->card_alive_init.log_event_table_ptr);
1415                 break;
1416         default:
1417                 IWL_ERR(priv, "uCode image not available\n");
1418                 return;
1419         }
1420
1421         if (mode == 0)
1422                 event_size = 2 * sizeof(u32);
1423         else
1424                 event_size = 3 * sizeof(u32);
1425
1426         ptr = base + EVENT_START_OFFSET + (start_idx * event_size);
1427
1428         /* "time" is actually "data" for mode 0 (no timestamp).
1429         * place event id # at far right for easier visual parsing. */
1430         for (i = 0; i < num_events; i++) {
1431                 ev = iwl_read_targ_mem(priv, ptr);
1432                 ptr += sizeof(u32);
1433                 time = iwl_read_targ_mem(priv, ptr);
1434                 ptr += sizeof(u32);
1435                 if (mode == 0) {
1436                         /* data, ev */
1437                         IWL_ERR(priv, "EVT_LOG:0x%08x:%04u\n", time, ev);
1438                 } else {
1439                         data = iwl_read_targ_mem(priv, ptr);
1440                         ptr += sizeof(u32);
1441                         IWL_ERR(priv, "EVT_LOGT:%010u:0x%08x:%04u\n",
1442                                         time, data, ev);
1443                 }
1444         }
1445 }
1446
1447 void iwl_dump_nic_event_log(struct iwl_priv *priv)
1448 {
1449         u32 base;       /* SRAM byte address of event log header */
1450         u32 capacity;   /* event log capacity in # entries */
1451         u32 mode;       /* 0 - no timestamp, 1 - timestamp recorded */
1452         u32 num_wraps;  /* # times uCode wrapped to top of log */
1453         u32 next_entry; /* index of next entry to be written by uCode */
1454         u32 size;       /* # entries that we'll print */
1455
1456         switch (priv->ucode_type) {
1457         case UCODE_RT:
1458                 base = le32_to_cpu(priv->card_alive.log_event_table_ptr);
1459                 break;
1460         case UCODE_INIT:
1461                 base = le32_to_cpu(priv->card_alive_init.log_event_table_ptr);
1462                 break;
1463         default:
1464                 IWL_ERR(priv, "uCode image not available\n");
1465                 return;
1466         }
1467
1468         if (!priv->cfg->ops->lib->is_valid_rtc_data_addr(base)) {
1469                 IWL_ERR(priv, "Invalid event log pointer 0x%08X\n", base);
1470                 return;
1471         }
1472
1473         /* event log header */
1474         capacity = iwl_read_targ_mem(priv, base);
1475         mode = iwl_read_targ_mem(priv, base + (1 * sizeof(u32)));
1476         num_wraps = iwl_read_targ_mem(priv, base + (2 * sizeof(u32)));
1477         next_entry = iwl_read_targ_mem(priv, base + (3 * sizeof(u32)));
1478
1479         size = num_wraps ? capacity : next_entry;
1480
1481         /* bail out if nothing in log */
1482         if (size == 0) {
1483                 IWL_ERR(priv, "Start IWL Event Log Dump: nothing in log\n");
1484                 return;
1485         }
1486
1487         IWL_ERR(priv, "Start IWL Event Log Dump: display count %d, wraps %d\n",
1488                         size, num_wraps);
1489
1490         /* if uCode has wrapped back to top of log, start at the oldest entry,
1491          * i.e the next one that uCode would fill. */
1492         if (num_wraps)
1493                 iwl_print_event_log(priv, next_entry,
1494                                         capacity - next_entry, mode);
1495         /* (then/else) start at top of log */
1496         iwl_print_event_log(priv, 0, next_entry, mode);
1497
1498 }
1499 /**
1500  * iwl_irq_handle_error - called for HW or SW error interrupt from card
1501  */
1502 void iwl_irq_handle_error(struct iwl_priv *priv)
1503 {
1504         /* Set the FW error flag -- cleared on iwl_down */
1505         set_bit(STATUS_FW_ERROR, &priv->status);
1506
1507         /* Cancel currently queued command. */
1508         clear_bit(STATUS_HCMD_ACTIVE, &priv->status);
1509
1510 #ifdef CONFIG_IWLWIFI_DEBUG
1511         if (iwl_debug_level & IWL_DL_FW_ERRORS) {
1512                 iwl_dump_nic_error_log(priv);
1513                 iwl_dump_nic_event_log(priv);
1514                 iwl_print_rx_config_cmd(priv);
1515         }
1516 #endif
1517
1518         wake_up_interruptible(&priv->wait_command_queue);
1519
1520         /* Keep the restart process from trying to send host
1521          * commands by clearing the INIT status bit */
1522         clear_bit(STATUS_READY, &priv->status);
1523
1524         if (!test_bit(STATUS_EXIT_PENDING, &priv->status)) {
1525                 IWL_DEBUG(priv, IWL_DL_FW_ERRORS,
1526                           "Restarting adapter due to uCode error.\n");
1527
1528                 if (priv->cfg->mod_params->restart_fw)
1529                         queue_work(priv->workqueue, &priv->restart);
1530         }
1531 }
1532 EXPORT_SYMBOL(iwl_irq_handle_error);
1533
1534 void iwl_configure_filter(struct ieee80211_hw *hw,
1535                           unsigned int changed_flags,
1536                           unsigned int *total_flags,
1537                           int mc_count, struct dev_addr_list *mc_list)
1538 {
1539         struct iwl_priv *priv = hw->priv;
1540         __le32 *filter_flags = &priv->staging_rxon.filter_flags;
1541
1542         IWL_DEBUG_MAC80211(priv, "Enter: changed: 0x%x, total: 0x%x\n",
1543                         changed_flags, *total_flags);
1544
1545         if (changed_flags & (FIF_OTHER_BSS | FIF_PROMISC_IN_BSS)) {
1546                 if (*total_flags & (FIF_OTHER_BSS | FIF_PROMISC_IN_BSS))
1547                         *filter_flags |= RXON_FILTER_PROMISC_MSK;
1548                 else
1549                         *filter_flags &= ~RXON_FILTER_PROMISC_MSK;
1550         }
1551         if (changed_flags & FIF_ALLMULTI) {
1552                 if (*total_flags & FIF_ALLMULTI)
1553                         *filter_flags |= RXON_FILTER_ACCEPT_GRP_MSK;
1554                 else
1555                         *filter_flags &= ~RXON_FILTER_ACCEPT_GRP_MSK;
1556         }
1557         if (changed_flags & FIF_CONTROL) {
1558                 if (*total_flags & FIF_CONTROL)
1559                         *filter_flags |= RXON_FILTER_CTL2HOST_MSK;
1560                 else
1561                         *filter_flags &= ~RXON_FILTER_CTL2HOST_MSK;
1562         }
1563         if (changed_flags & FIF_BCN_PRBRESP_PROMISC) {
1564                 if (*total_flags & FIF_BCN_PRBRESP_PROMISC)
1565                         *filter_flags |= RXON_FILTER_BCON_AWARE_MSK;
1566                 else
1567                         *filter_flags &= ~RXON_FILTER_BCON_AWARE_MSK;
1568         }
1569
1570         /* We avoid iwl_commit_rxon here to commit the new filter flags
1571          * since mac80211 will call ieee80211_hw_config immediately.
1572          * (mc_list is not supported at this time). Otherwise, we need to
1573          * queue a background iwl_commit_rxon work.
1574          */
1575
1576         *total_flags &= FIF_OTHER_BSS | FIF_ALLMULTI | FIF_PROMISC_IN_BSS |
1577                         FIF_BCN_PRBRESP_PROMISC | FIF_CONTROL;
1578 }
1579 EXPORT_SYMBOL(iwl_configure_filter);
1580
1581 int iwl_setup_mac(struct iwl_priv *priv)
1582 {
1583         int ret;
1584         struct ieee80211_hw *hw = priv->hw;
1585         hw->rate_control_algorithm = "iwl-agn-rs";
1586
1587         /* Tell mac80211 our characteristics */
1588         hw->flags = IEEE80211_HW_SIGNAL_DBM |
1589                     IEEE80211_HW_NOISE_DBM |
1590                     IEEE80211_HW_AMPDU_AGGREGATION |
1591                     IEEE80211_HW_SPECTRUM_MGMT |
1592                     IEEE80211_HW_SUPPORTS_PS;
1593         hw->wiphy->interface_modes =
1594                 BIT(NL80211_IFTYPE_STATION) |
1595                 BIT(NL80211_IFTYPE_ADHOC);
1596
1597         hw->wiphy->custom_regulatory = true;
1598
1599         hw->wiphy->max_scan_ssids = PROBE_OPTION_MAX;
1600         /* we create the 802.11 header and a zero-length SSID element */
1601         hw->wiphy->max_scan_ie_len = IWL_MAX_PROBE_REQUEST - 24 - 2;
1602
1603         /* Default value; 4 EDCA QOS priorities */
1604         hw->queues = 4;
1605
1606         hw->max_listen_interval = IWL_CONN_MAX_LISTEN_INTERVAL;
1607
1608         if (priv->bands[IEEE80211_BAND_2GHZ].n_channels)
1609                 priv->hw->wiphy->bands[IEEE80211_BAND_2GHZ] =
1610                         &priv->bands[IEEE80211_BAND_2GHZ];
1611         if (priv->bands[IEEE80211_BAND_5GHZ].n_channels)
1612                 priv->hw->wiphy->bands[IEEE80211_BAND_5GHZ] =
1613                         &priv->bands[IEEE80211_BAND_5GHZ];
1614
1615         ret = ieee80211_register_hw(priv->hw);
1616         if (ret) {
1617                 IWL_ERR(priv, "Failed to register hw (error %d)\n", ret);
1618                 return ret;
1619         }
1620         priv->mac80211_registered = 1;
1621
1622         return 0;
1623 }
1624 EXPORT_SYMBOL(iwl_setup_mac);
1625
1626 int iwl_set_hw_params(struct iwl_priv *priv)
1627 {
1628         priv->hw_params.max_rxq_size = RX_QUEUE_SIZE;
1629         priv->hw_params.max_rxq_log = RX_QUEUE_SIZE_LOG;
1630         if (priv->cfg->mod_params->amsdu_size_8K)
1631                 priv->hw_params.rx_buf_size = IWL_RX_BUF_SIZE_8K;
1632         else
1633                 priv->hw_params.rx_buf_size = IWL_RX_BUF_SIZE_4K;
1634         priv->hw_params.max_pkt_size = priv->hw_params.rx_buf_size - 256;
1635
1636         priv->hw_params.max_beacon_itrvl = IWL_MAX_UCODE_BEACON_INTERVAL;
1637
1638         if (priv->cfg->mod_params->disable_11n)
1639                 priv->cfg->sku &= ~IWL_SKU_N;
1640
1641         /* Device-specific setup */
1642         return priv->cfg->ops->lib->set_hw_params(priv);
1643 }
1644 EXPORT_SYMBOL(iwl_set_hw_params);
1645
1646 int iwl_init_drv(struct iwl_priv *priv)
1647 {
1648         int ret;
1649
1650         priv->ibss_beacon = NULL;
1651
1652         spin_lock_init(&priv->lock);
1653         spin_lock_init(&priv->sta_lock);
1654         spin_lock_init(&priv->hcmd_lock);
1655
1656         INIT_LIST_HEAD(&priv->free_frames);
1657
1658         mutex_init(&priv->mutex);
1659
1660         /* Clear the driver's (not device's) station table */
1661         iwl_clear_stations_table(priv);
1662
1663         priv->data_retry_limit = -1;
1664         priv->ieee_channels = NULL;
1665         priv->ieee_rates = NULL;
1666         priv->band = IEEE80211_BAND_2GHZ;
1667
1668         priv->iw_mode = NL80211_IFTYPE_STATION;
1669
1670         priv->current_ht_config.sm_ps = WLAN_HT_CAP_SM_PS_DISABLED;
1671
1672         /* Choose which receivers/antennas to use */
1673         if (priv->cfg->ops->hcmd->set_rxon_chain)
1674                 priv->cfg->ops->hcmd->set_rxon_chain(priv);
1675
1676         iwl_init_scan_params(priv);
1677
1678         iwl_reset_qos(priv);
1679
1680         priv->qos_data.qos_active = 0;
1681         priv->qos_data.qos_cap.val = 0;
1682
1683         priv->rates_mask = IWL_RATES_MASK;
1684         /* If power management is turned on, default to CAM mode */
1685         priv->power_mode = IWL_POWER_MODE_CAM;
1686         priv->tx_power_user_lmt = IWL_TX_POWER_TARGET_POWER_MAX;
1687
1688         ret = iwl_init_channel_map(priv);
1689         if (ret) {
1690                 IWL_ERR(priv, "initializing regulatory failed: %d\n", ret);
1691                 goto err;
1692         }
1693
1694         ret = iwlcore_init_geos(priv);
1695         if (ret) {
1696                 IWL_ERR(priv, "initializing geos failed: %d\n", ret);
1697                 goto err_free_channel_map;
1698         }
1699         iwlcore_init_hw_rates(priv, priv->ieee_rates);
1700
1701         return 0;
1702
1703 err_free_channel_map:
1704         iwl_free_channel_map(priv);
1705 err:
1706         return ret;
1707 }
1708 EXPORT_SYMBOL(iwl_init_drv);
1709
1710 int iwl_set_tx_power(struct iwl_priv *priv, s8 tx_power, bool force)
1711 {
1712         int ret = 0;
1713         if (tx_power < IWL_TX_POWER_TARGET_POWER_MIN) {
1714                 IWL_WARN(priv, "Requested user TXPOWER %d below lower limit %d.\n",
1715                          tx_power,
1716                          IWL_TX_POWER_TARGET_POWER_MIN);
1717                 return -EINVAL;
1718         }
1719
1720         if (tx_power > IWL_TX_POWER_TARGET_POWER_MAX) {
1721                 IWL_WARN(priv, "Requested user TXPOWER %d above upper limit %d.\n",
1722                          tx_power,
1723                          IWL_TX_POWER_TARGET_POWER_MAX);
1724                 return -EINVAL;
1725         }
1726
1727         if (priv->tx_power_user_lmt != tx_power)
1728                 force = true;
1729
1730         priv->tx_power_user_lmt = tx_power;
1731
1732         /* if nic is not up don't send command */
1733         if (!iwl_is_ready_rf(priv))
1734                 return ret;
1735
1736         if (force && priv->cfg->ops->lib->send_tx_power)
1737                 ret = priv->cfg->ops->lib->send_tx_power(priv);
1738
1739         return ret;
1740 }
1741 EXPORT_SYMBOL(iwl_set_tx_power);
1742
1743 void iwl_uninit_drv(struct iwl_priv *priv)
1744 {
1745         iwl_calib_free_results(priv);
1746         iwlcore_free_geos(priv);
1747         iwl_free_channel_map(priv);
1748         kfree(priv->scan);
1749 }
1750 EXPORT_SYMBOL(iwl_uninit_drv);
1751
1752 #define ICT_COUNT (PAGE_SIZE/sizeof(u32))
1753
1754 /* Free dram table */
1755 void iwl_free_isr_ict(struct iwl_priv *priv)
1756 {
1757         if (priv->ict_tbl_vir) {
1758                 pci_free_consistent(priv->pci_dev, (sizeof(u32) * ICT_COUNT) +
1759                                         PAGE_SIZE, priv->ict_tbl_vir,
1760                                         priv->ict_tbl_dma);
1761                 priv->ict_tbl_vir = NULL;
1762         }
1763 }
1764 EXPORT_SYMBOL(iwl_free_isr_ict);
1765
1766
1767 /* allocate dram shared table it is a PAGE_SIZE aligned
1768  * also reset all data related to ICT table interrupt.
1769  */
1770 int iwl_alloc_isr_ict(struct iwl_priv *priv)
1771 {
1772
1773         if (priv->cfg->use_isr_legacy)
1774                 return 0;
1775         /* allocate shrared data table */
1776         priv->ict_tbl_vir = pci_alloc_consistent(priv->pci_dev, (sizeof(u32) *
1777                                                   ICT_COUNT) + PAGE_SIZE,
1778                                                   &priv->ict_tbl_dma);
1779         if (!priv->ict_tbl_vir)
1780                 return -ENOMEM;
1781
1782         /* align table to PAGE_SIZE boundry */
1783         priv->aligned_ict_tbl_dma = ALIGN(priv->ict_tbl_dma, PAGE_SIZE);
1784
1785         IWL_DEBUG_ISR(priv, "ict dma addr %Lx dma aligned %Lx diff %d\n",
1786                              (unsigned long long)priv->ict_tbl_dma,
1787                              (unsigned long long)priv->aligned_ict_tbl_dma,
1788                         (int)(priv->aligned_ict_tbl_dma - priv->ict_tbl_dma));
1789
1790         priv->ict_tbl =  priv->ict_tbl_vir +
1791                           (priv->aligned_ict_tbl_dma - priv->ict_tbl_dma);
1792
1793         IWL_DEBUG_ISR(priv, "ict vir addr %p vir aligned %p diff %d\n",
1794                              priv->ict_tbl, priv->ict_tbl_vir,
1795                         (int)(priv->aligned_ict_tbl_dma - priv->ict_tbl_dma));
1796
1797         /* reset table and index to all 0 */
1798         memset(priv->ict_tbl_vir,0, (sizeof(u32) * ICT_COUNT) + PAGE_SIZE);
1799         priv->ict_index = 0;
1800
1801         /* add periodic RX interrupt */
1802         priv->inta_mask |= CSR_INT_BIT_RX_PERIODIC;
1803         return 0;
1804 }
1805 EXPORT_SYMBOL(iwl_alloc_isr_ict);
1806
1807 /* Device is going up inform it about using ICT interrupt table,
1808  * also we need to tell the driver to start using ICT interrupt.
1809  */
1810 int iwl_reset_ict(struct iwl_priv *priv)
1811 {
1812         u32 val;
1813         unsigned long flags;
1814
1815         if (!priv->ict_tbl_vir)
1816                 return 0;
1817
1818         spin_lock_irqsave(&priv->lock, flags);
1819         iwl_disable_interrupts(priv);
1820
1821         memset(&priv->ict_tbl[0],0, sizeof(u32) * ICT_COUNT);
1822
1823         val = priv->aligned_ict_tbl_dma >> PAGE_SHIFT;
1824
1825         val |= CSR_DRAM_INT_TBL_ENABLE;
1826         val |= CSR_DRAM_INIT_TBL_WRAP_CHECK;
1827
1828         IWL_DEBUG_ISR(priv, "CSR_DRAM_INT_TBL_REG =0x%X "
1829                         "aligned dma address %Lx\n",
1830                         val, (unsigned long long)priv->aligned_ict_tbl_dma);
1831
1832         iwl_write32(priv, CSR_DRAM_INT_TBL_REG, val);
1833         priv->use_ict = true;
1834         priv->ict_index = 0;
1835         iwl_write32(priv, CSR_INT, priv->inta_mask);
1836         iwl_enable_interrupts(priv);
1837         spin_unlock_irqrestore(&priv->lock, flags);
1838
1839         return 0;
1840 }
1841 EXPORT_SYMBOL(iwl_reset_ict);
1842
1843 /* Device is going down disable ict interrupt usage */
1844 void iwl_disable_ict(struct iwl_priv *priv)
1845 {
1846         unsigned long flags;
1847
1848         spin_lock_irqsave(&priv->lock, flags);
1849         priv->use_ict = false;
1850         spin_unlock_irqrestore(&priv->lock, flags);
1851 }
1852 EXPORT_SYMBOL(iwl_disable_ict);
1853
1854 /* interrupt handler using ict table, with this interrupt driver will
1855  * stop using INTA register to get device's interrupt, reading this register
1856  * is expensive, device will write interrupts in ICT dram table, increment
1857  * index then will fire interrupt to driver, driver will OR all ICT table
1858  * entries from current index up to table entry with 0 value. the result is
1859  * the interrupt we need to service, driver will set the entries back to 0 and
1860  * set index.
1861  */
1862 irqreturn_t iwl_isr_ict(int irq, void *data)
1863 {
1864         struct iwl_priv *priv = data;
1865         u32 inta, inta_mask;
1866         u32 val = 0;
1867
1868         if (!priv)
1869                 return IRQ_NONE;
1870
1871         /* dram interrupt table not set yet,
1872          * use legacy interrupt.
1873          */
1874         if (!priv->use_ict)
1875                 return iwl_isr(irq, data);
1876
1877         spin_lock(&priv->lock);
1878
1879         /* Disable (but don't clear!) interrupts here to avoid
1880          * back-to-back ISRs and sporadic interrupts from our NIC.
1881          * If we have something to service, the tasklet will re-enable ints.
1882          * If we *don't* have something, we'll re-enable before leaving here.
1883          */
1884         inta_mask = iwl_read32(priv, CSR_INT_MASK);  /* just for debug */
1885         iwl_write32(priv, CSR_INT_MASK, 0x00000000);
1886
1887
1888         /* Ignore interrupt if there's nothing in NIC to service.
1889          * This may be due to IRQ shared with another device,
1890          * or due to sporadic interrupts thrown from our NIC. */
1891         if (!priv->ict_tbl[priv->ict_index]) {
1892                 IWL_DEBUG_ISR(priv, "Ignore interrupt, inta == 0\n");
1893                 goto none;
1894         }
1895
1896         /* read all entries that not 0 start with ict_index */
1897         while (priv->ict_tbl[priv->ict_index]) {
1898
1899                 val |= priv->ict_tbl[priv->ict_index];
1900                 IWL_DEBUG_ISR(priv, "ICT index %d value 0x%08X\n",
1901                                         priv->ict_index,
1902                                         priv->ict_tbl[priv->ict_index]);
1903                 priv->ict_tbl[priv->ict_index] = 0;
1904                 priv->ict_index = iwl_queue_inc_wrap(priv->ict_index,
1905                                                                 ICT_COUNT);
1906
1907         }
1908
1909         /* We should not get this value, just ignore it. */
1910         if (val == 0xffffffff)
1911                 val = 0;
1912
1913         inta = (0xff & val) | ((0xff00 & val) << 16);
1914         IWL_DEBUG_ISR(priv, "ISR inta 0x%08x, enabled 0x%08x ict 0x%08x\n",
1915                         inta, inta_mask, val);
1916
1917         inta &= priv->inta_mask;
1918         priv->inta |= inta;
1919
1920         /* iwl_irq_tasklet() will service interrupts and re-enable them */
1921         if (likely(inta))
1922                 tasklet_schedule(&priv->irq_tasklet);
1923         else if (test_bit(STATUS_INT_ENABLED, &priv->status) && !priv->inta) {
1924                 /* Allow interrupt if was disabled by this handler and
1925                  * no tasklet was schedules, We should not enable interrupt,
1926                  * tasklet will enable it.
1927                  */
1928                 iwl_enable_interrupts(priv);
1929         }
1930
1931         spin_unlock(&priv->lock);
1932         return IRQ_HANDLED;
1933
1934  none:
1935         /* re-enable interrupts here since we don't have anything to service.
1936          * only Re-enable if disabled by irq.
1937          */
1938         if (test_bit(STATUS_INT_ENABLED, &priv->status) && !priv->inta)
1939                 iwl_enable_interrupts(priv);
1940
1941         spin_unlock(&priv->lock);
1942         return IRQ_NONE;
1943 }
1944 EXPORT_SYMBOL(iwl_isr_ict);
1945
1946
1947 static irqreturn_t iwl_isr(int irq, void *data)
1948 {
1949         struct iwl_priv *priv = data;
1950         u32 inta, inta_mask;
1951 #ifdef CONFIG_IWLWIFI_DEBUG
1952         u32 inta_fh;
1953 #endif
1954         if (!priv)
1955                 return IRQ_NONE;
1956
1957         spin_lock(&priv->lock);
1958
1959         /* Disable (but don't clear!) interrupts here to avoid
1960          *    back-to-back ISRs and sporadic interrupts from our NIC.
1961          * If we have something to service, the tasklet will re-enable ints.
1962          * If we *don't* have something, we'll re-enable before leaving here. */
1963         inta_mask = iwl_read32(priv, CSR_INT_MASK);  /* just for debug */
1964         iwl_write32(priv, CSR_INT_MASK, 0x00000000);
1965
1966         /* Discover which interrupts are active/pending */
1967         inta = iwl_read32(priv, CSR_INT);
1968
1969         /* Ignore interrupt if there's nothing in NIC to service.
1970          * This may be due to IRQ shared with another device,
1971          * or due to sporadic interrupts thrown from our NIC. */
1972         if (!inta) {
1973                 IWL_DEBUG_ISR(priv, "Ignore interrupt, inta == 0\n");
1974                 goto none;
1975         }
1976
1977         if ((inta == 0xFFFFFFFF) || ((inta & 0xFFFFFFF0) == 0xa5a5a5a0)) {
1978                 /* Hardware disappeared. It might have already raised
1979                  * an interrupt */
1980                 IWL_WARN(priv, "HARDWARE GONE?? INTA == 0x%08x\n", inta);
1981                 goto unplugged;
1982         }
1983
1984 #ifdef CONFIG_IWLWIFI_DEBUG
1985         if (iwl_debug_level & (IWL_DL_ISR)) {
1986                 inta_fh = iwl_read32(priv, CSR_FH_INT_STATUS);
1987                 IWL_DEBUG_ISR(priv, "ISR inta 0x%08x, enabled 0x%08x, "
1988                               "fh 0x%08x\n", inta, inta_mask, inta_fh);
1989         }
1990 #endif
1991
1992         priv->inta |= inta;
1993         /* iwl_irq_tasklet() will service interrupts and re-enable them */
1994         if (likely(inta))
1995                 tasklet_schedule(&priv->irq_tasklet);
1996         else if (test_bit(STATUS_INT_ENABLED, &priv->status) && !priv->inta)
1997                 iwl_enable_interrupts(priv);
1998
1999  unplugged:
2000         spin_unlock(&priv->lock);
2001         return IRQ_HANDLED;
2002
2003  none:
2004         /* re-enable interrupts here since we don't have anything to service. */
2005         /* only Re-enable if diabled by irq  and no schedules tasklet. */
2006         if (test_bit(STATUS_INT_ENABLED, &priv->status) && !priv->inta)
2007                 iwl_enable_interrupts(priv);
2008
2009         spin_unlock(&priv->lock);
2010         return IRQ_NONE;
2011 }
2012
2013 irqreturn_t iwl_isr_legacy(int irq, void *data)
2014 {
2015         struct iwl_priv *priv = data;
2016         u32 inta, inta_mask;
2017         u32 inta_fh;
2018         if (!priv)
2019                 return IRQ_NONE;
2020
2021         spin_lock(&priv->lock);
2022
2023         /* Disable (but don't clear!) interrupts here to avoid
2024          *    back-to-back ISRs and sporadic interrupts from our NIC.
2025          * If we have something to service, the tasklet will re-enable ints.
2026          * If we *don't* have something, we'll re-enable before leaving here. */
2027         inta_mask = iwl_read32(priv, CSR_INT_MASK);  /* just for debug */
2028         iwl_write32(priv, CSR_INT_MASK, 0x00000000);
2029
2030         /* Discover which interrupts are active/pending */
2031         inta = iwl_read32(priv, CSR_INT);
2032         inta_fh = iwl_read32(priv, CSR_FH_INT_STATUS);
2033
2034         /* Ignore interrupt if there's nothing in NIC to service.
2035          * This may be due to IRQ shared with another device,
2036          * or due to sporadic interrupts thrown from our NIC. */
2037         if (!inta && !inta_fh) {
2038                 IWL_DEBUG_ISR(priv, "Ignore interrupt, inta == 0, inta_fh == 0\n");
2039                 goto none;
2040         }
2041
2042         if ((inta == 0xFFFFFFFF) || ((inta & 0xFFFFFFF0) == 0xa5a5a5a0)) {
2043                 /* Hardware disappeared. It might have already raised
2044                  * an interrupt */
2045                 IWL_WARN(priv, "HARDWARE GONE?? INTA == 0x%08x\n", inta);
2046                 goto unplugged;
2047         }
2048
2049         IWL_DEBUG_ISR(priv, "ISR inta 0x%08x, enabled 0x%08x, fh 0x%08x\n",
2050                       inta, inta_mask, inta_fh);
2051
2052         inta &= ~CSR_INT_BIT_SCD;
2053
2054         /* iwl_irq_tasklet() will service interrupts and re-enable them */
2055         if (likely(inta || inta_fh))
2056                 tasklet_schedule(&priv->irq_tasklet);
2057
2058  unplugged:
2059         spin_unlock(&priv->lock);
2060         return IRQ_HANDLED;
2061
2062  none:
2063         /* re-enable interrupts here since we don't have anything to service. */
2064         /* only Re-enable if diabled by irq */
2065         if (test_bit(STATUS_INT_ENABLED, &priv->status))
2066                 iwl_enable_interrupts(priv);
2067         spin_unlock(&priv->lock);
2068         return IRQ_NONE;
2069 }
2070 EXPORT_SYMBOL(iwl_isr_legacy);
2071
2072 int iwl_send_bt_config(struct iwl_priv *priv)
2073 {
2074         struct iwl_bt_cmd bt_cmd = {
2075                 .flags = 3,
2076                 .lead_time = 0xAA,
2077                 .max_kill = 1,
2078                 .kill_ack_mask = 0,
2079                 .kill_cts_mask = 0,
2080         };
2081
2082         return iwl_send_cmd_pdu(priv, REPLY_BT_CONFIG,
2083                                 sizeof(struct iwl_bt_cmd), &bt_cmd);
2084 }
2085 EXPORT_SYMBOL(iwl_send_bt_config);
2086
2087 int iwl_send_statistics_request(struct iwl_priv *priv, u8 flags)
2088 {
2089         u32 stat_flags = 0;
2090         struct iwl_host_cmd cmd = {
2091                 .id = REPLY_STATISTICS_CMD,
2092                 .meta.flags = flags,
2093                 .len = sizeof(stat_flags),
2094                 .data = (u8 *) &stat_flags,
2095         };
2096         return iwl_send_cmd(priv, &cmd);
2097 }
2098 EXPORT_SYMBOL(iwl_send_statistics_request);
2099
2100 /**
2101  * iwl_verify_inst_sparse - verify runtime uCode image in card vs. host,
2102  *   using sample data 100 bytes apart.  If these sample points are good,
2103  *   it's a pretty good bet that everything between them is good, too.
2104  */
2105 static int iwlcore_verify_inst_sparse(struct iwl_priv *priv, __le32 *image, u32 len)
2106 {
2107         u32 val;
2108         int ret = 0;
2109         u32 errcnt = 0;
2110         u32 i;
2111
2112         IWL_DEBUG_INFO(priv, "ucode inst image size is %u\n", len);
2113
2114         for (i = 0; i < len; i += 100, image += 100/sizeof(u32)) {
2115                 /* read data comes through single port, auto-incr addr */
2116                 /* NOTE: Use the debugless read so we don't flood kernel log
2117                  * if IWL_DL_IO is set */
2118                 iwl_write_direct32(priv, HBUS_TARG_MEM_RADDR,
2119                         i + IWL49_RTC_INST_LOWER_BOUND);
2120                 val = _iwl_read_direct32(priv, HBUS_TARG_MEM_RDAT);
2121                 if (val != le32_to_cpu(*image)) {
2122                         ret = -EIO;
2123                         errcnt++;
2124                         if (errcnt >= 3)
2125                                 break;
2126                 }
2127         }
2128
2129         return ret;
2130 }
2131
2132 /**
2133  * iwlcore_verify_inst_full - verify runtime uCode image in card vs. host,
2134  *     looking at all data.
2135  */
2136 static int iwl_verify_inst_full(struct iwl_priv *priv, __le32 *image,
2137                                  u32 len)
2138 {
2139         u32 val;
2140         u32 save_len = len;
2141         int ret = 0;
2142         u32 errcnt;
2143
2144         IWL_DEBUG_INFO(priv, "ucode inst image size is %u\n", len);
2145
2146         iwl_write_direct32(priv, HBUS_TARG_MEM_RADDR,
2147                            IWL49_RTC_INST_LOWER_BOUND);
2148
2149         errcnt = 0;
2150         for (; len > 0; len -= sizeof(u32), image++) {
2151                 /* read data comes through single port, auto-incr addr */
2152                 /* NOTE: Use the debugless read so we don't flood kernel log
2153                  * if IWL_DL_IO is set */
2154                 val = _iwl_read_direct32(priv, HBUS_TARG_MEM_RDAT);
2155                 if (val != le32_to_cpu(*image)) {
2156                         IWL_ERR(priv, "uCode INST section is invalid at "
2157                                   "offset 0x%x, is 0x%x, s/b 0x%x\n",
2158                                   save_len - len, val, le32_to_cpu(*image));
2159                         ret = -EIO;
2160                         errcnt++;
2161                         if (errcnt >= 20)
2162                                 break;
2163                 }
2164         }
2165
2166         if (!errcnt)
2167                 IWL_DEBUG_INFO(priv,
2168                     "ucode image in INSTRUCTION memory is good\n");
2169
2170         return ret;
2171 }
2172
2173 /**
2174  * iwl_verify_ucode - determine which instruction image is in SRAM,
2175  *    and verify its contents
2176  */
2177 int iwl_verify_ucode(struct iwl_priv *priv)
2178 {
2179         __le32 *image;
2180         u32 len;
2181         int ret;
2182
2183         /* Try bootstrap */
2184         image = (__le32 *)priv->ucode_boot.v_addr;
2185         len = priv->ucode_boot.len;
2186         ret = iwlcore_verify_inst_sparse(priv, image, len);
2187         if (!ret) {
2188                 IWL_DEBUG_INFO(priv, "Bootstrap uCode is good in inst SRAM\n");
2189                 return 0;
2190         }
2191
2192         /* Try initialize */
2193         image = (__le32 *)priv->ucode_init.v_addr;
2194         len = priv->ucode_init.len;
2195         ret = iwlcore_verify_inst_sparse(priv, image, len);
2196         if (!ret) {
2197                 IWL_DEBUG_INFO(priv, "Initialize uCode is good in inst SRAM\n");
2198                 return 0;
2199         }
2200
2201         /* Try runtime/protocol */
2202         image = (__le32 *)priv->ucode_code.v_addr;
2203         len = priv->ucode_code.len;
2204         ret = iwlcore_verify_inst_sparse(priv, image, len);
2205         if (!ret) {
2206                 IWL_DEBUG_INFO(priv, "Runtime uCode is good in inst SRAM\n");
2207                 return 0;
2208         }
2209
2210         IWL_ERR(priv, "NO VALID UCODE IMAGE IN INSTRUCTION SRAM!!\n");
2211
2212         /* Since nothing seems to match, show first several data entries in
2213          * instruction SRAM, so maybe visual inspection will give a clue.
2214          * Selection of bootstrap image (vs. other images) is arbitrary. */
2215         image = (__le32 *)priv->ucode_boot.v_addr;
2216         len = priv->ucode_boot.len;
2217         ret = iwl_verify_inst_full(priv, image, len);
2218
2219         return ret;
2220 }
2221 EXPORT_SYMBOL(iwl_verify_ucode);
2222
2223
2224 void iwl_rf_kill_ct_config(struct iwl_priv *priv)
2225 {
2226         struct iwl_ct_kill_config cmd;
2227         struct iwl_ct_kill_throttling_config adv_cmd;
2228         unsigned long flags;
2229         int ret = 0;
2230
2231         spin_lock_irqsave(&priv->lock, flags);
2232         iwl_write32(priv, CSR_UCODE_DRV_GP1_CLR,
2233                     CSR_UCODE_DRV_GP1_REG_BIT_CT_KILL_EXIT);
2234         spin_unlock_irqrestore(&priv->lock, flags);
2235         priv->power_data.ct_kill_toggle = false;
2236
2237         switch (priv->hw_rev & CSR_HW_REV_TYPE_MSK) {
2238         case CSR_HW_REV_TYPE_1000:
2239         case CSR_HW_REV_TYPE_6x00:
2240         case CSR_HW_REV_TYPE_6x50:
2241                 adv_cmd.critical_temperature_enter =
2242                         cpu_to_le32(priv->hw_params.ct_kill_threshold);
2243                 adv_cmd.critical_temperature_exit =
2244                         cpu_to_le32(priv->hw_params.ct_kill_exit_threshold);
2245
2246                 ret = iwl_send_cmd_pdu(priv, REPLY_CT_KILL_CONFIG_CMD,
2247                                        sizeof(adv_cmd), &adv_cmd);
2248                 break;
2249         default:
2250                 cmd.critical_temperature_R =
2251                         cpu_to_le32(priv->hw_params.ct_kill_threshold);
2252
2253                 ret = iwl_send_cmd_pdu(priv, REPLY_CT_KILL_CONFIG_CMD,
2254                                        sizeof(cmd), &cmd);
2255                 break;
2256         }
2257         ret = iwl_send_cmd_pdu(priv, REPLY_CT_KILL_CONFIG_CMD,
2258                                sizeof(cmd), &cmd);
2259         if (ret)
2260                 IWL_ERR(priv, "REPLY_CT_KILL_CONFIG_CMD failed\n");
2261         else
2262                 IWL_DEBUG_INFO(priv, "REPLY_CT_KILL_CONFIG_CMD succeeded, "
2263                         "critical temperature is %d\n",
2264                         cmd.critical_temperature_R);
2265 }
2266 EXPORT_SYMBOL(iwl_rf_kill_ct_config);
2267
2268
2269 /*
2270  * CARD_STATE_CMD
2271  *
2272  * Use: Sets the device's internal card state to enable, disable, or halt
2273  *
2274  * When in the 'enable' state the card operates as normal.
2275  * When in the 'disable' state, the card enters into a low power mode.
2276  * When in the 'halt' state, the card is shut down and must be fully
2277  * restarted to come back on.
2278  */
2279 int iwl_send_card_state(struct iwl_priv *priv, u32 flags, u8 meta_flag)
2280 {
2281         struct iwl_host_cmd cmd = {
2282                 .id = REPLY_CARD_STATE_CMD,
2283                 .len = sizeof(u32),
2284                 .data = &flags,
2285                 .meta.flags = meta_flag,
2286         };
2287
2288         return iwl_send_cmd(priv, &cmd);
2289 }
2290 EXPORT_SYMBOL(iwl_send_card_state);
2291
2292 void iwl_rx_pm_sleep_notif(struct iwl_priv *priv,
2293                            struct iwl_rx_mem_buffer *rxb)
2294 {
2295 #ifdef CONFIG_IWLWIFI_DEBUG
2296         struct iwl_rx_packet *pkt = (struct iwl_rx_packet *)rxb->skb->data;
2297         struct iwl_sleep_notification *sleep = &(pkt->u.sleep_notif);
2298         IWL_DEBUG_RX(priv, "sleep mode: %d, src: %d\n",
2299                      sleep->pm_sleep_mode, sleep->pm_wakeup_src);
2300 #endif
2301 }
2302 EXPORT_SYMBOL(iwl_rx_pm_sleep_notif);
2303
2304 void iwl_rx_pm_debug_statistics_notif(struct iwl_priv *priv,
2305                                       struct iwl_rx_mem_buffer *rxb)
2306 {
2307         struct iwl_rx_packet *pkt = (struct iwl_rx_packet *)rxb->skb->data;
2308         IWL_DEBUG_RADIO(priv, "Dumping %d bytes of unhandled "
2309                         "notification for %s:\n",
2310                         le32_to_cpu(pkt->len), get_cmd_string(pkt->hdr.cmd));
2311         iwl_print_hex_dump(IWL_DL_RADIO, pkt->u.raw, le32_to_cpu(pkt->len));
2312 }
2313 EXPORT_SYMBOL(iwl_rx_pm_debug_statistics_notif);
2314
2315 void iwl_rx_reply_error(struct iwl_priv *priv,
2316                         struct iwl_rx_mem_buffer *rxb)
2317 {
2318         struct iwl_rx_packet *pkt = (struct iwl_rx_packet *)rxb->skb->data;
2319
2320         IWL_ERR(priv, "Error Reply type 0x%08X cmd %s (0x%02X) "
2321                 "seq 0x%04X ser 0x%08X\n",
2322                 le32_to_cpu(pkt->u.err_resp.error_type),
2323                 get_cmd_string(pkt->u.err_resp.cmd_id),
2324                 pkt->u.err_resp.cmd_id,
2325                 le16_to_cpu(pkt->u.err_resp.bad_cmd_seq_num),
2326                 le32_to_cpu(pkt->u.err_resp.error_info));
2327 }
2328 EXPORT_SYMBOL(iwl_rx_reply_error);
2329
2330 void iwl_clear_isr_stats(struct iwl_priv *priv)
2331 {
2332         memset(&priv->isr_stats, 0, sizeof(priv->isr_stats));
2333 }
2334 EXPORT_SYMBOL(iwl_clear_isr_stats);
2335
2336 int iwl_mac_conf_tx(struct ieee80211_hw *hw, u16 queue,
2337                            const struct ieee80211_tx_queue_params *params)
2338 {
2339         struct iwl_priv *priv = hw->priv;
2340         unsigned long flags;
2341         int q;
2342
2343         IWL_DEBUG_MAC80211(priv, "enter\n");
2344
2345         if (!iwl_is_ready_rf(priv)) {
2346                 IWL_DEBUG_MAC80211(priv, "leave - RF not ready\n");
2347                 return -EIO;
2348         }
2349
2350         if (queue >= AC_NUM) {
2351                 IWL_DEBUG_MAC80211(priv, "leave - queue >= AC_NUM %d\n", queue);
2352                 return 0;
2353         }
2354
2355         q = AC_NUM - 1 - queue;
2356
2357         spin_lock_irqsave(&priv->lock, flags);
2358
2359         priv->qos_data.def_qos_parm.ac[q].cw_min = cpu_to_le16(params->cw_min);
2360         priv->qos_data.def_qos_parm.ac[q].cw_max = cpu_to_le16(params->cw_max);
2361         priv->qos_data.def_qos_parm.ac[q].aifsn = params->aifs;
2362         priv->qos_data.def_qos_parm.ac[q].edca_txop =
2363                         cpu_to_le16((params->txop * 32));
2364
2365         priv->qos_data.def_qos_parm.ac[q].reserved1 = 0;
2366         priv->qos_data.qos_active = 1;
2367
2368         if (priv->iw_mode == NL80211_IFTYPE_AP)
2369                 iwl_activate_qos(priv, 1);
2370         else if (priv->assoc_id && iwl_is_associated(priv))
2371                 iwl_activate_qos(priv, 0);
2372
2373         spin_unlock_irqrestore(&priv->lock, flags);
2374
2375         IWL_DEBUG_MAC80211(priv, "leave\n");
2376         return 0;
2377 }
2378 EXPORT_SYMBOL(iwl_mac_conf_tx);
2379
2380 static void iwl_ht_conf(struct iwl_priv *priv,
2381                             struct ieee80211_bss_conf *bss_conf)
2382 {
2383         struct ieee80211_sta_ht_cap *ht_conf;
2384         struct iwl_ht_info *iwl_conf = &priv->current_ht_config;
2385         struct ieee80211_sta *sta;
2386
2387         IWL_DEBUG_MAC80211(priv, "enter: \n");
2388
2389         if (!iwl_conf->is_ht)
2390                 return;
2391
2392
2393         /*
2394          * It is totally wrong to base global information on something
2395          * that is valid only when associated, alas, this driver works
2396          * that way and I don't know how to fix it.
2397          */
2398
2399         rcu_read_lock();
2400         sta = ieee80211_find_sta(priv->hw, priv->bssid);
2401         if (!sta) {
2402                 rcu_read_unlock();
2403                 return;
2404         }
2405         ht_conf = &sta->ht_cap;
2406
2407         if (ht_conf->cap & IEEE80211_HT_CAP_SGI_20)
2408                 iwl_conf->sgf |= HT_SHORT_GI_20MHZ;
2409         if (ht_conf->cap & IEEE80211_HT_CAP_SGI_40)
2410                 iwl_conf->sgf |= HT_SHORT_GI_40MHZ;
2411
2412         iwl_conf->is_green_field = !!(ht_conf->cap & IEEE80211_HT_CAP_GRN_FLD);
2413         iwl_conf->max_amsdu_size =
2414                 !!(ht_conf->cap & IEEE80211_HT_CAP_MAX_AMSDU);
2415
2416         iwl_conf->supported_chan_width =
2417                 !!(ht_conf->cap & IEEE80211_HT_CAP_SUP_WIDTH_20_40);
2418
2419         /*
2420          * XXX: The HT configuration needs to be moved into iwl_mac_config()
2421          *      to be done there correctly.
2422          */
2423
2424         iwl_conf->extension_chan_offset = IEEE80211_HT_PARAM_CHA_SEC_NONE;
2425         if (conf_is_ht40_minus(&priv->hw->conf))
2426                 iwl_conf->extension_chan_offset = IEEE80211_HT_PARAM_CHA_SEC_BELOW;
2427         else if (conf_is_ht40_plus(&priv->hw->conf))
2428                 iwl_conf->extension_chan_offset = IEEE80211_HT_PARAM_CHA_SEC_ABOVE;
2429
2430         /* If no above or below channel supplied disable FAT channel */
2431         if (iwl_conf->extension_chan_offset != IEEE80211_HT_PARAM_CHA_SEC_ABOVE &&
2432             iwl_conf->extension_chan_offset != IEEE80211_HT_PARAM_CHA_SEC_BELOW)
2433                 iwl_conf->supported_chan_width = 0;
2434
2435         iwl_conf->sm_ps = (u8)((ht_conf->cap & IEEE80211_HT_CAP_SM_PS) >> 2);
2436
2437         memcpy(&iwl_conf->mcs, &ht_conf->mcs, 16);
2438
2439         iwl_conf->tx_chan_width = iwl_conf->supported_chan_width != 0;
2440         iwl_conf->ht_protection =
2441                 bss_conf->ht_operation_mode & IEEE80211_HT_OP_MODE_PROTECTION;
2442         iwl_conf->non_GF_STA_present =
2443                 !!(bss_conf->ht_operation_mode & IEEE80211_HT_OP_MODE_NON_GF_STA_PRSNT);
2444
2445         rcu_read_unlock();
2446
2447         IWL_DEBUG_MAC80211(priv, "leave\n");
2448 }
2449
2450 #define IWL_DELAY_NEXT_SCAN_AFTER_ASSOC (HZ*6)
2451 void iwl_bss_info_changed(struct ieee80211_hw *hw,
2452                           struct ieee80211_vif *vif,
2453                           struct ieee80211_bss_conf *bss_conf,
2454                           u32 changes)
2455 {
2456         struct iwl_priv *priv = hw->priv;
2457         int ret;
2458
2459         IWL_DEBUG_MAC80211(priv, "changes = 0x%X\n", changes);
2460
2461         if (!iwl_is_alive(priv))
2462                 return;
2463
2464         mutex_lock(&priv->mutex);
2465
2466         if (changes & BSS_CHANGED_BEACON &&
2467             priv->iw_mode == NL80211_IFTYPE_AP) {
2468                 dev_kfree_skb(priv->ibss_beacon);
2469                 priv->ibss_beacon = ieee80211_beacon_get(hw, vif);
2470         }
2471
2472         if (changes & BSS_CHANGED_BEACON_INT) {
2473                 priv->beacon_int = bss_conf->beacon_int;
2474                 /* TODO: in AP mode, do something to make this take effect */
2475         }
2476
2477         if (changes & BSS_CHANGED_BSSID) {
2478                 IWL_DEBUG_MAC80211(priv, "BSSID %pM\n", bss_conf->bssid);
2479
2480                 /*
2481                  * If there is currently a HW scan going on in the
2482                  * background then we need to cancel it else the RXON
2483                  * below/in post_associate will fail.
2484                  */
2485                 if (iwl_scan_cancel_timeout(priv, 100)) {
2486                         IWL_WARN(priv, "Aborted scan still in progress after 100ms\n");
2487                         IWL_DEBUG_MAC80211(priv, "leaving - scan abort failed.\n");
2488                         mutex_unlock(&priv->mutex);
2489                         return;
2490                 }
2491
2492                 /* mac80211 only sets assoc when in STATION mode */
2493                 if (priv->iw_mode == NL80211_IFTYPE_ADHOC ||
2494                     bss_conf->assoc) {
2495                         memcpy(priv->staging_rxon.bssid_addr,
2496                                bss_conf->bssid, ETH_ALEN);
2497
2498                         /* currently needed in a few places */
2499                         memcpy(priv->bssid, bss_conf->bssid, ETH_ALEN);
2500                 } else {
2501                         priv->staging_rxon.filter_flags &=
2502                                 ~RXON_FILTER_ASSOC_MSK;
2503                 }
2504
2505         }
2506
2507         /*
2508          * This needs to be after setting the BSSID in case
2509          * mac80211 decides to do both changes at once because
2510          * it will invoke post_associate.
2511          */
2512         if (priv->iw_mode == NL80211_IFTYPE_ADHOC &&
2513             changes & BSS_CHANGED_BEACON) {
2514                 struct sk_buff *beacon = ieee80211_beacon_get(hw, vif);
2515
2516                 if (beacon)
2517                         iwl_mac_beacon_update(hw, beacon);
2518         }
2519
2520         if (changes & BSS_CHANGED_ERP_PREAMBLE) {
2521                 IWL_DEBUG_MAC80211(priv, "ERP_PREAMBLE %d\n",
2522                                    bss_conf->use_short_preamble);
2523                 if (bss_conf->use_short_preamble)
2524                         priv->staging_rxon.flags |= RXON_FLG_SHORT_PREAMBLE_MSK;
2525                 else
2526                         priv->staging_rxon.flags &= ~RXON_FLG_SHORT_PREAMBLE_MSK;
2527         }
2528
2529         if (changes & BSS_CHANGED_ERP_CTS_PROT) {
2530                 IWL_DEBUG_MAC80211(priv, "ERP_CTS %d\n", bss_conf->use_cts_prot);
2531                 if (bss_conf->use_cts_prot && (priv->band != IEEE80211_BAND_5GHZ))
2532                         priv->staging_rxon.flags |= RXON_FLG_TGG_PROTECT_MSK;
2533                 else
2534                         priv->staging_rxon.flags &= ~RXON_FLG_TGG_PROTECT_MSK;
2535         }
2536
2537         if (changes & BSS_CHANGED_BASIC_RATES) {
2538                 /* XXX use this information
2539                  *
2540                  * To do that, remove code from iwl_set_rate() and put something
2541                  * like this here:
2542                  *
2543                 if (A-band)
2544                         priv->staging_rxon.ofdm_basic_rates =
2545                                 bss_conf->basic_rates;
2546                 else
2547                         priv->staging_rxon.ofdm_basic_rates =
2548                                 bss_conf->basic_rates >> 4;
2549                         priv->staging_rxon.cck_basic_rates =
2550                                 bss_conf->basic_rates & 0xF;
2551                  */
2552         }
2553
2554         if (changes & BSS_CHANGED_HT) {
2555                 iwl_ht_conf(priv, bss_conf);
2556
2557                 if (priv->cfg->ops->hcmd->set_rxon_chain)
2558                         priv->cfg->ops->hcmd->set_rxon_chain(priv);
2559         }
2560
2561         if (changes & BSS_CHANGED_ASSOC) {
2562                 IWL_DEBUG_MAC80211(priv, "ASSOC %d\n", bss_conf->assoc);
2563                 if (bss_conf->assoc) {
2564                         priv->assoc_id = bss_conf->aid;
2565                         priv->beacon_int = bss_conf->beacon_int;
2566                         priv->power_data.dtim_period = bss_conf->dtim_period;
2567                         priv->timestamp = bss_conf->timestamp;
2568                         priv->assoc_capability = bss_conf->assoc_capability;
2569
2570                         /*
2571                          * We have just associated, don't start scan too early
2572                          * leave time for EAPOL exchange to complete.
2573                          *
2574                          * XXX: do this in mac80211
2575                          */
2576                         priv->next_scan_jiffies = jiffies +
2577                                         IWL_DELAY_NEXT_SCAN_AFTER_ASSOC;
2578                         if (!iwl_is_rfkill(priv))
2579                                 priv->cfg->ops->lib->post_associate(priv);
2580                 } else
2581                         priv->assoc_id = 0;
2582
2583         }
2584
2585         if (changes && iwl_is_associated(priv) && priv->assoc_id) {
2586                 IWL_DEBUG_MAC80211(priv, "Changes (%#x) while associated\n",
2587                                    changes);
2588                 ret = iwl_send_rxon_assoc(priv);
2589                 if (!ret) {
2590                         /* Sync active_rxon with latest change. */
2591                         memcpy((void *)&priv->active_rxon,
2592                                 &priv->staging_rxon,
2593                                 sizeof(struct iwl_rxon_cmd));
2594                 }
2595         }
2596
2597         mutex_unlock(&priv->mutex);
2598
2599         IWL_DEBUG_MAC80211(priv, "leave\n");
2600 }
2601 EXPORT_SYMBOL(iwl_bss_info_changed);
2602
2603 int iwl_mac_beacon_update(struct ieee80211_hw *hw, struct sk_buff *skb)
2604 {
2605         struct iwl_priv *priv = hw->priv;
2606         unsigned long flags;
2607         __le64 timestamp;
2608
2609         IWL_DEBUG_MAC80211(priv, "enter\n");
2610
2611         if (!iwl_is_ready_rf(priv)) {
2612                 IWL_DEBUG_MAC80211(priv, "leave - RF not ready\n");
2613                 return -EIO;
2614         }
2615
2616         if (priv->iw_mode != NL80211_IFTYPE_ADHOC) {
2617                 IWL_DEBUG_MAC80211(priv, "leave - not IBSS\n");
2618                 return -EIO;
2619         }
2620
2621         spin_lock_irqsave(&priv->lock, flags);
2622
2623         if (priv->ibss_beacon)
2624                 dev_kfree_skb(priv->ibss_beacon);
2625
2626         priv->ibss_beacon = skb;
2627
2628         priv->assoc_id = 0;
2629         timestamp = ((struct ieee80211_mgmt *)skb->data)->u.beacon.timestamp;
2630         priv->timestamp = le64_to_cpu(timestamp);
2631
2632         IWL_DEBUG_MAC80211(priv, "leave\n");
2633         spin_unlock_irqrestore(&priv->lock, flags);
2634
2635         iwl_reset_qos(priv);
2636
2637         priv->cfg->ops->lib->post_associate(priv);
2638
2639
2640         return 0;
2641 }
2642 EXPORT_SYMBOL(iwl_mac_beacon_update);
2643
2644 int iwl_set_mode(struct iwl_priv *priv, int mode)
2645 {
2646         if (mode == NL80211_IFTYPE_ADHOC) {
2647                 const struct iwl_channel_info *ch_info;
2648
2649                 ch_info = iwl_get_channel_info(priv,
2650                         priv->band,
2651                         le16_to_cpu(priv->staging_rxon.channel));
2652
2653                 if (!ch_info || !is_channel_ibss(ch_info)) {
2654                         IWL_ERR(priv, "channel %d not IBSS channel\n",
2655                                   le16_to_cpu(priv->staging_rxon.channel));
2656                         return -EINVAL;
2657                 }
2658         }
2659
2660         iwl_connection_init_rx_config(priv, mode);
2661
2662         if (priv->cfg->ops->hcmd->set_rxon_chain)
2663                 priv->cfg->ops->hcmd->set_rxon_chain(priv);
2664
2665         memcpy(priv->staging_rxon.node_addr, priv->mac_addr, ETH_ALEN);
2666
2667         iwl_clear_stations_table(priv);
2668
2669         /* dont commit rxon if rf-kill is on*/
2670         if (!iwl_is_ready_rf(priv))
2671                 return -EAGAIN;
2672
2673         iwlcore_commit_rxon(priv);
2674
2675         return 0;
2676 }
2677 EXPORT_SYMBOL(iwl_set_mode);
2678
2679 int iwl_mac_add_interface(struct ieee80211_hw *hw,
2680                                  struct ieee80211_if_init_conf *conf)
2681 {
2682         struct iwl_priv *priv = hw->priv;
2683         unsigned long flags;
2684
2685         IWL_DEBUG_MAC80211(priv, "enter: type %d\n", conf->type);
2686
2687         if (priv->vif) {
2688                 IWL_DEBUG_MAC80211(priv, "leave - vif != NULL\n");
2689                 return -EOPNOTSUPP;
2690         }
2691
2692         spin_lock_irqsave(&priv->lock, flags);
2693         priv->vif = conf->vif;
2694         priv->iw_mode = conf->type;
2695
2696         spin_unlock_irqrestore(&priv->lock, flags);
2697
2698         mutex_lock(&priv->mutex);
2699
2700         if (conf->mac_addr) {
2701                 IWL_DEBUG_MAC80211(priv, "Set %pM\n", conf->mac_addr);
2702                 memcpy(priv->mac_addr, conf->mac_addr, ETH_ALEN);
2703         }
2704
2705         if (iwl_set_mode(priv, conf->type) == -EAGAIN)
2706                 /* we are not ready, will run again when ready */
2707                 set_bit(STATUS_MODE_PENDING, &priv->status);
2708
2709         mutex_unlock(&priv->mutex);
2710
2711         IWL_DEBUG_MAC80211(priv, "leave\n");
2712         return 0;
2713 }
2714 EXPORT_SYMBOL(iwl_mac_add_interface);
2715
2716 void iwl_mac_remove_interface(struct ieee80211_hw *hw,
2717                                      struct ieee80211_if_init_conf *conf)
2718 {
2719         struct iwl_priv *priv = hw->priv;
2720
2721         IWL_DEBUG_MAC80211(priv, "enter\n");
2722
2723         mutex_lock(&priv->mutex);
2724
2725         if (iwl_is_ready_rf(priv)) {
2726                 iwl_scan_cancel_timeout(priv, 100);
2727                 priv->staging_rxon.filter_flags &= ~RXON_FILTER_ASSOC_MSK;
2728                 iwlcore_commit_rxon(priv);
2729         }
2730         if (priv->vif == conf->vif) {
2731                 priv->vif = NULL;
2732                 memset(priv->bssid, 0, ETH_ALEN);
2733         }
2734         mutex_unlock(&priv->mutex);
2735
2736         IWL_DEBUG_MAC80211(priv, "leave\n");
2737
2738 }
2739 EXPORT_SYMBOL(iwl_mac_remove_interface);
2740
2741 /**
2742  * iwl_mac_config - mac80211 config callback
2743  *
2744  * We ignore conf->flags & IEEE80211_CONF_SHORT_SLOT_TIME since it seems to
2745  * be set inappropriately and the driver currently sets the hardware up to
2746  * use it whenever needed.
2747  */
2748 int iwl_mac_config(struct ieee80211_hw *hw, u32 changed)
2749 {
2750         struct iwl_priv *priv = hw->priv;
2751         const struct iwl_channel_info *ch_info;
2752         struct ieee80211_conf *conf = &hw->conf;
2753         unsigned long flags = 0;
2754         int ret = 0;
2755         u16 ch;
2756         int scan_active = 0;
2757
2758         mutex_lock(&priv->mutex);
2759
2760         IWL_DEBUG_MAC80211(priv, "enter to channel %d changed 0x%X\n",
2761                                         conf->channel->hw_value, changed);
2762
2763         if (unlikely(!priv->cfg->mod_params->disable_hw_scan &&
2764                         test_bit(STATUS_SCANNING, &priv->status))) {
2765                 scan_active = 1;
2766                 IWL_DEBUG_MAC80211(priv, "leave - scanning\n");
2767         }
2768
2769
2770         /* during scanning mac80211 will delay channel setting until
2771          * scan finish with changed = 0
2772          */
2773         if (!changed || (changed & IEEE80211_CONF_CHANGE_CHANNEL)) {
2774                 if (scan_active)
2775                         goto set_ch_out;
2776
2777                 ch = ieee80211_frequency_to_channel(conf->channel->center_freq);
2778                 ch_info = iwl_get_channel_info(priv, conf->channel->band, ch);
2779                 if (!is_channel_valid(ch_info)) {
2780                         IWL_DEBUG_MAC80211(priv, "leave - invalid channel\n");
2781                         ret = -EINVAL;
2782                         goto set_ch_out;
2783                 }
2784
2785                 if (priv->iw_mode == NL80211_IFTYPE_ADHOC &&
2786                         !is_channel_ibss(ch_info)) {
2787                         IWL_ERR(priv, "channel %d in band %d not "
2788                                 "IBSS channel\n",
2789                                 conf->channel->hw_value, conf->channel->band);
2790                         ret = -EINVAL;
2791                         goto set_ch_out;
2792                 }
2793
2794                 priv->current_ht_config.is_ht = conf_is_ht(conf);
2795
2796                 spin_lock_irqsave(&priv->lock, flags);
2797
2798
2799                 /* if we are switching from ht to 2.4 clear flags
2800                  * from any ht related info since 2.4 does not
2801                  * support ht */
2802                 if ((le16_to_cpu(priv->staging_rxon.channel) != ch))
2803                         priv->staging_rxon.flags = 0;
2804
2805                 iwl_set_rxon_channel(priv, conf->channel);
2806
2807                 iwl_set_flags_for_band(priv, conf->channel->band);
2808                 spin_unlock_irqrestore(&priv->lock, flags);
2809  set_ch_out:
2810                 /* The list of supported rates and rate mask can be different
2811                  * for each band; since the band may have changed, reset
2812                  * the rate mask to what mac80211 lists */
2813                 iwl_set_rate(priv);
2814         }
2815
2816         if (changed & IEEE80211_CONF_CHANGE_PS &&
2817             priv->iw_mode == NL80211_IFTYPE_STATION) {
2818                 priv->power_data.power_disabled =
2819                         !(conf->flags & IEEE80211_CONF_PS);
2820                 ret = iwl_power_update_mode(priv, 0);
2821                 if (ret)
2822                         IWL_DEBUG_MAC80211(priv, "Error setting power level\n");
2823         }
2824
2825         if (changed & IEEE80211_CONF_CHANGE_POWER) {
2826                 IWL_DEBUG_MAC80211(priv, "TX Power old=%d new=%d\n",
2827                         priv->tx_power_user_lmt, conf->power_level);
2828
2829                 iwl_set_tx_power(priv, conf->power_level, false);
2830         }
2831
2832         /* call to ensure that 4965 rx_chain is set properly in monitor mode */
2833         if (priv->cfg->ops->hcmd->set_rxon_chain)
2834                 priv->cfg->ops->hcmd->set_rxon_chain(priv);
2835
2836         if (!iwl_is_ready(priv)) {
2837                 IWL_DEBUG_MAC80211(priv, "leave - not ready\n");
2838                 goto out;
2839         }
2840
2841         if (scan_active)
2842                 goto out;
2843
2844         if (memcmp(&priv->active_rxon,
2845                    &priv->staging_rxon, sizeof(priv->staging_rxon)))
2846                 iwlcore_commit_rxon(priv);
2847         else
2848                 IWL_DEBUG_INFO(priv, "Not re-sending same RXON configuration.\n");
2849
2850
2851 out:
2852         IWL_DEBUG_MAC80211(priv, "leave\n");
2853         mutex_unlock(&priv->mutex);
2854         return ret;
2855 }
2856 EXPORT_SYMBOL(iwl_mac_config);
2857
2858 int iwl_mac_get_tx_stats(struct ieee80211_hw *hw,
2859                          struct ieee80211_tx_queue_stats *stats)
2860 {
2861         struct iwl_priv *priv = hw->priv;
2862         int i, avail;
2863         struct iwl_tx_queue *txq;
2864         struct iwl_queue *q;
2865         unsigned long flags;
2866
2867         IWL_DEBUG_MAC80211(priv, "enter\n");
2868
2869         if (!iwl_is_ready_rf(priv)) {
2870                 IWL_DEBUG_MAC80211(priv, "leave - RF not ready\n");
2871                 return -EIO;
2872         }
2873
2874         spin_lock_irqsave(&priv->lock, flags);
2875
2876         for (i = 0; i < AC_NUM; i++) {
2877                 txq = &priv->txq[i];
2878                 q = &txq->q;
2879                 avail = iwl_queue_space(q);
2880
2881                 stats[i].len = q->n_window - avail;
2882                 stats[i].limit = q->n_window - q->high_mark;
2883                 stats[i].count = q->n_window;
2884
2885         }
2886         spin_unlock_irqrestore(&priv->lock, flags);
2887
2888         IWL_DEBUG_MAC80211(priv, "leave\n");
2889
2890         return 0;
2891 }
2892 EXPORT_SYMBOL(iwl_mac_get_tx_stats);
2893
2894 void iwl_mac_reset_tsf(struct ieee80211_hw *hw)
2895 {
2896         struct iwl_priv *priv = hw->priv;
2897         unsigned long flags;
2898
2899         mutex_lock(&priv->mutex);
2900         IWL_DEBUG_MAC80211(priv, "enter\n");
2901
2902         spin_lock_irqsave(&priv->lock, flags);
2903         memset(&priv->current_ht_config, 0, sizeof(struct iwl_ht_info));
2904         spin_unlock_irqrestore(&priv->lock, flags);
2905
2906         iwl_reset_qos(priv);
2907
2908         spin_lock_irqsave(&priv->lock, flags);
2909         priv->assoc_id = 0;
2910         priv->assoc_capability = 0;
2911         priv->assoc_station_added = 0;
2912
2913         /* new association get rid of ibss beacon skb */
2914         if (priv->ibss_beacon)
2915                 dev_kfree_skb(priv->ibss_beacon);
2916
2917         priv->ibss_beacon = NULL;
2918
2919         priv->beacon_int = priv->vif->bss_conf.beacon_int;
2920         priv->timestamp = 0;
2921         if ((priv->iw_mode == NL80211_IFTYPE_STATION))
2922                 priv->beacon_int = 0;
2923
2924         spin_unlock_irqrestore(&priv->lock, flags);
2925
2926         if (!iwl_is_ready_rf(priv)) {
2927                 IWL_DEBUG_MAC80211(priv, "leave - not ready\n");
2928                 mutex_unlock(&priv->mutex);
2929                 return;
2930         }
2931
2932         /* we are restarting association process
2933          * clear RXON_FILTER_ASSOC_MSK bit
2934          */
2935         if (priv->iw_mode != NL80211_IFTYPE_AP) {
2936                 iwl_scan_cancel_timeout(priv, 100);
2937                 priv->staging_rxon.filter_flags &= ~RXON_FILTER_ASSOC_MSK;
2938                 iwlcore_commit_rxon(priv);
2939         }
2940
2941         if (priv->iw_mode != NL80211_IFTYPE_ADHOC) {
2942                 IWL_DEBUG_MAC80211(priv, "leave - not in IBSS\n");
2943                 mutex_unlock(&priv->mutex);
2944                 return;
2945         }
2946
2947         iwl_set_rate(priv);
2948
2949         mutex_unlock(&priv->mutex);
2950
2951         IWL_DEBUG_MAC80211(priv, "leave\n");
2952 }
2953 EXPORT_SYMBOL(iwl_mac_reset_tsf);
2954
2955 #ifdef CONFIG_PM
2956
2957 int iwl_pci_suspend(struct pci_dev *pdev, pm_message_t state)
2958 {
2959         struct iwl_priv *priv = pci_get_drvdata(pdev);
2960
2961         /*
2962          * This function is called when system goes into suspend state
2963          * mac80211 will call iwl_mac_stop() from the mac80211 suspend function
2964          * first but since iwl_mac_stop() has no knowledge of who the caller is,
2965          * it will not call apm_ops.stop() to stop the DMA operation.
2966          * Calling apm_ops.stop here to make sure we stop the DMA.
2967          */
2968         priv->cfg->ops->lib->apm_ops.stop(priv);
2969
2970         pci_save_state(pdev);
2971         pci_disable_device(pdev);
2972         pci_set_power_state(pdev, PCI_D3hot);
2973
2974         return 0;
2975 }
2976 EXPORT_SYMBOL(iwl_pci_suspend);
2977
2978 int iwl_pci_resume(struct pci_dev *pdev)
2979 {
2980         struct iwl_priv *priv = pci_get_drvdata(pdev);
2981         int ret;
2982
2983         pci_set_power_state(pdev, PCI_D0);
2984         ret = pci_enable_device(pdev);
2985         if (ret)
2986                 return ret;
2987         pci_restore_state(pdev);
2988         iwl_enable_interrupts(priv);
2989
2990         return 0;
2991 }
2992 EXPORT_SYMBOL(iwl_pci_resume);
2993
2994 #endif /* CONFIG_PM */