Merge branch 'for-rmk' of git://aeryn.fluff.org.uk/bjdooks/linux
[linux-2.6] / drivers / net / wireless / iwlwifi / iwl-core.c
1 /******************************************************************************
2  *
3  * GPL LICENSE SUMMARY
4  *
5  * Copyright(c) 2008 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  * Tomas Winkler <tomas.winkler@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/version.h>
32 #include <net/mac80211.h>
33
34 struct iwl_priv; /* FIXME: remove */
35 #include "iwl-debug.h"
36 #include "iwl-eeprom.h"
37 #include "iwl-dev.h" /* FIXME: remove */
38 #include "iwl-core.h"
39 #include "iwl-io.h"
40 #include "iwl-rfkill.h"
41 #include "iwl-power.h"
42
43
44 MODULE_DESCRIPTION("iwl core");
45 MODULE_VERSION(IWLWIFI_VERSION);
46 MODULE_AUTHOR(DRV_COPYRIGHT);
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 /*
63  * Parameter order:
64  *   rate, ht rate, prev rate, next rate, prev tgg rate, next tgg rate
65  *
66  * If there isn't a valid next or previous rate then INV is used which
67  * maps to IWL_RATE_INVALID
68  *
69  */
70 const struct iwl_rate_info iwl_rates[IWL_RATE_COUNT] = {
71         IWL_DECLARE_RATE_INFO(1, INV, INV, 2, INV, 2, INV, 2),    /*  1mbps */
72         IWL_DECLARE_RATE_INFO(2, INV, 1, 5, 1, 5, 1, 5),          /*  2mbps */
73         IWL_DECLARE_RATE_INFO(5, INV, 2, 6, 2, 11, 2, 11),        /*5.5mbps */
74         IWL_DECLARE_RATE_INFO(11, INV, 9, 12, 9, 12, 5, 18),      /* 11mbps */
75         IWL_DECLARE_RATE_INFO(6, 6, 5, 9, 5, 11, 5, 11),        /*  6mbps */
76         IWL_DECLARE_RATE_INFO(9, 6, 6, 11, 6, 11, 5, 11),       /*  9mbps */
77         IWL_DECLARE_RATE_INFO(12, 12, 11, 18, 11, 18, 11, 18),   /* 12mbps */
78         IWL_DECLARE_RATE_INFO(18, 18, 12, 24, 12, 24, 11, 24),   /* 18mbps */
79         IWL_DECLARE_RATE_INFO(24, 24, 18, 36, 18, 36, 18, 36),   /* 24mbps */
80         IWL_DECLARE_RATE_INFO(36, 36, 24, 48, 24, 48, 24, 48),   /* 36mbps */
81         IWL_DECLARE_RATE_INFO(48, 48, 36, 54, 36, 54, 36, 54),   /* 48mbps */
82         IWL_DECLARE_RATE_INFO(54, 54, 48, INV, 48, INV, 48, INV),/* 54mbps */
83         IWL_DECLARE_RATE_INFO(60, 60, 48, INV, 48, INV, 48, INV),/* 60mbps */
84         /* FIXME:RS:          ^^    should be INV (legacy) */
85 };
86 EXPORT_SYMBOL(iwl_rates);
87
88 /**
89  * translate ucode response to mac80211 tx status control values
90  */
91 void iwl_hwrate_to_tx_control(struct iwl_priv *priv, u32 rate_n_flags,
92                                   struct ieee80211_tx_info *control)
93 {
94         int rate_index;
95
96         control->antenna_sel_tx =
97                 ((rate_n_flags & RATE_MCS_ANT_ABC_MSK) >> RATE_MCS_ANT_POS);
98         if (rate_n_flags & RATE_MCS_HT_MSK)
99                 control->flags |= IEEE80211_TX_CTL_OFDM_HT;
100         if (rate_n_flags & RATE_MCS_GF_MSK)
101                 control->flags |= IEEE80211_TX_CTL_GREEN_FIELD;
102         if (rate_n_flags & RATE_MCS_FAT_MSK)
103                 control->flags |= IEEE80211_TX_CTL_40_MHZ_WIDTH;
104         if (rate_n_flags & RATE_MCS_DUP_MSK)
105                 control->flags |= IEEE80211_TX_CTL_DUP_DATA;
106         if (rate_n_flags & RATE_MCS_SGI_MSK)
107                 control->flags |= IEEE80211_TX_CTL_SHORT_GI;
108         rate_index = iwl_hwrate_to_plcp_idx(rate_n_flags);
109         if (control->band == IEEE80211_BAND_5GHZ)
110                 rate_index -= IWL_FIRST_OFDM_RATE;
111         control->tx_rate_idx = rate_index;
112 }
113 EXPORT_SYMBOL(iwl_hwrate_to_tx_control);
114
115 int iwl_hwrate_to_plcp_idx(u32 rate_n_flags)
116 {
117         int idx = 0;
118
119         /* HT rate format */
120         if (rate_n_flags & RATE_MCS_HT_MSK) {
121                 idx = (rate_n_flags & 0xff);
122
123                 if (idx >= IWL_RATE_MIMO2_6M_PLCP)
124                         idx = idx - IWL_RATE_MIMO2_6M_PLCP;
125
126                 idx += IWL_FIRST_OFDM_RATE;
127                 /* skip 9M not supported in ht*/
128                 if (idx >= IWL_RATE_9M_INDEX)
129                         idx += 1;
130                 if ((idx >= IWL_FIRST_OFDM_RATE) && (idx <= IWL_LAST_OFDM_RATE))
131                         return idx;
132
133         /* legacy rate format, search for match in table */
134         } else {
135                 for (idx = 0; idx < ARRAY_SIZE(iwl_rates); idx++)
136                         if (iwl_rates[idx].plcp == (rate_n_flags & 0xFF))
137                                 return idx;
138         }
139
140         return -1;
141 }
142 EXPORT_SYMBOL(iwl_hwrate_to_plcp_idx);
143
144
145
146 const u8 iwl_bcast_addr[ETH_ALEN] = { 0xFF, 0xFF, 0xFF, 0xFF, 0xFF, 0xFF };
147 EXPORT_SYMBOL(iwl_bcast_addr);
148
149
150 /* This function both allocates and initializes hw and priv. */
151 struct ieee80211_hw *iwl_alloc_all(struct iwl_cfg *cfg,
152                 struct ieee80211_ops *hw_ops)
153 {
154         struct iwl_priv *priv;
155
156         /* mac80211 allocates memory for this device instance, including
157          *   space for this driver's private structure */
158         struct ieee80211_hw *hw =
159                 ieee80211_alloc_hw(sizeof(struct iwl_priv), hw_ops);
160         if (hw == NULL) {
161                 IWL_ERROR("Can not allocate network device\n");
162                 goto out;
163         }
164
165         priv = hw->priv;
166         priv->hw = hw;
167
168 out:
169         return hw;
170 }
171 EXPORT_SYMBOL(iwl_alloc_all);
172
173 void iwl_hw_detect(struct iwl_priv *priv)
174 {
175         priv->hw_rev = _iwl_read32(priv, CSR_HW_REV);
176         priv->hw_wa_rev = _iwl_read32(priv, CSR_HW_REV_WA_REG);
177         pci_read_config_byte(priv->pci_dev, PCI_REVISION_ID, &priv->rev_id);
178 }
179 EXPORT_SYMBOL(iwl_hw_detect);
180
181 /* Tell nic where to find the "keep warm" buffer */
182 int iwl_kw_init(struct iwl_priv *priv)
183 {
184         unsigned long flags;
185         int ret;
186
187         spin_lock_irqsave(&priv->lock, flags);
188         ret = iwl_grab_nic_access(priv);
189         if (ret)
190                 goto out;
191
192         iwl_write_direct32(priv, FH_KW_MEM_ADDR_REG,
193                              priv->kw.dma_addr >> 4);
194         iwl_release_nic_access(priv);
195 out:
196         spin_unlock_irqrestore(&priv->lock, flags);
197         return ret;
198 }
199
200 int iwl_kw_alloc(struct iwl_priv *priv)
201 {
202         struct pci_dev *dev = priv->pci_dev;
203         struct iwl_kw *kw = &priv->kw;
204
205         kw->size = IWL_KW_SIZE;
206         kw->v_addr = pci_alloc_consistent(dev, kw->size, &kw->dma_addr);
207         if (!kw->v_addr)
208                 return -ENOMEM;
209
210         return 0;
211 }
212
213 /**
214  * iwl_kw_free - Free the "keep warm" buffer
215  */
216 void iwl_kw_free(struct iwl_priv *priv)
217 {
218         struct pci_dev *dev = priv->pci_dev;
219         struct iwl_kw *kw = &priv->kw;
220
221         if (kw->v_addr) {
222                 pci_free_consistent(dev, kw->size, kw->v_addr, kw->dma_addr);
223                 memset(kw, 0, sizeof(*kw));
224         }
225 }
226
227 int iwl_hw_nic_init(struct iwl_priv *priv)
228 {
229         unsigned long flags;
230         struct iwl_rx_queue *rxq = &priv->rxq;
231         int ret;
232
233         /* nic_init */
234         spin_lock_irqsave(&priv->lock, flags);
235         priv->cfg->ops->lib->apm_ops.init(priv);
236         iwl_write32(priv, CSR_INT_COALESCING, 512 / 32);
237         spin_unlock_irqrestore(&priv->lock, flags);
238
239         ret = priv->cfg->ops->lib->apm_ops.set_pwr_src(priv, IWL_PWR_SRC_VMAIN);
240
241         priv->cfg->ops->lib->apm_ops.config(priv);
242
243         /* Allocate the RX queue, or reset if it is already allocated */
244         if (!rxq->bd) {
245                 ret = iwl_rx_queue_alloc(priv);
246                 if (ret) {
247                         IWL_ERROR("Unable to initialize Rx queue\n");
248                         return -ENOMEM;
249                 }
250         } else
251                 iwl_rx_queue_reset(priv, rxq);
252
253         iwl_rx_replenish(priv);
254
255         iwl_rx_init(priv, rxq);
256
257         spin_lock_irqsave(&priv->lock, flags);
258
259         rxq->need_update = 1;
260         iwl_rx_queue_update_write_ptr(priv, rxq);
261
262         spin_unlock_irqrestore(&priv->lock, flags);
263
264         /* Allocate and init all Tx and Command queues */
265         ret = iwl_txq_ctx_reset(priv);
266         if (ret)
267                 return ret;
268
269         set_bit(STATUS_INIT, &priv->status);
270
271         return 0;
272 }
273 EXPORT_SYMBOL(iwl_hw_nic_init);
274
275 /**
276  * iwl_clear_stations_table - Clear the driver's station table
277  *
278  * NOTE:  This does not clear or otherwise alter the device's station table.
279  */
280 void iwl_clear_stations_table(struct iwl_priv *priv)
281 {
282         unsigned long flags;
283
284         spin_lock_irqsave(&priv->sta_lock, flags);
285
286         if (iwl_is_alive(priv) &&
287            !test_bit(STATUS_EXIT_PENDING, &priv->status) &&
288            iwl_send_cmd_pdu_async(priv, REPLY_REMOVE_ALL_STA, 0, NULL, NULL))
289                 IWL_ERROR("Couldn't clear the station table\n");
290
291         priv->num_stations = 0;
292         memset(priv->stations, 0, sizeof(priv->stations));
293
294         spin_unlock_irqrestore(&priv->sta_lock, flags);
295 }
296 EXPORT_SYMBOL(iwl_clear_stations_table);
297
298 void iwl_reset_qos(struct iwl_priv *priv)
299 {
300         u16 cw_min = 15;
301         u16 cw_max = 1023;
302         u8 aifs = 2;
303         u8 is_legacy = 0;
304         unsigned long flags;
305         int i;
306
307         spin_lock_irqsave(&priv->lock, flags);
308         priv->qos_data.qos_active = 0;
309
310         if (priv->iw_mode == IEEE80211_IF_TYPE_IBSS) {
311                 if (priv->qos_data.qos_enable)
312                         priv->qos_data.qos_active = 1;
313                 if (!(priv->active_rate & 0xfff0)) {
314                         cw_min = 31;
315                         is_legacy = 1;
316                 }
317         } else if (priv->iw_mode == IEEE80211_IF_TYPE_AP) {
318                 if (priv->qos_data.qos_enable)
319                         priv->qos_data.qos_active = 1;
320         } else if (!(priv->staging_rxon.flags & RXON_FLG_SHORT_SLOT_MSK)) {
321                 cw_min = 31;
322                 is_legacy = 1;
323         }
324
325         if (priv->qos_data.qos_active)
326                 aifs = 3;
327
328         priv->qos_data.def_qos_parm.ac[0].cw_min = cpu_to_le16(cw_min);
329         priv->qos_data.def_qos_parm.ac[0].cw_max = cpu_to_le16(cw_max);
330         priv->qos_data.def_qos_parm.ac[0].aifsn = aifs;
331         priv->qos_data.def_qos_parm.ac[0].edca_txop = 0;
332         priv->qos_data.def_qos_parm.ac[0].reserved1 = 0;
333
334         if (priv->qos_data.qos_active) {
335                 i = 1;
336                 priv->qos_data.def_qos_parm.ac[i].cw_min = cpu_to_le16(cw_min);
337                 priv->qos_data.def_qos_parm.ac[i].cw_max = cpu_to_le16(cw_max);
338                 priv->qos_data.def_qos_parm.ac[i].aifsn = 7;
339                 priv->qos_data.def_qos_parm.ac[i].edca_txop = 0;
340                 priv->qos_data.def_qos_parm.ac[i].reserved1 = 0;
341
342                 i = 2;
343                 priv->qos_data.def_qos_parm.ac[i].cw_min =
344                         cpu_to_le16((cw_min + 1) / 2 - 1);
345                 priv->qos_data.def_qos_parm.ac[i].cw_max =
346                         cpu_to_le16(cw_max);
347                 priv->qos_data.def_qos_parm.ac[i].aifsn = 2;
348                 if (is_legacy)
349                         priv->qos_data.def_qos_parm.ac[i].edca_txop =
350                                 cpu_to_le16(6016);
351                 else
352                         priv->qos_data.def_qos_parm.ac[i].edca_txop =
353                                 cpu_to_le16(3008);
354                 priv->qos_data.def_qos_parm.ac[i].reserved1 = 0;
355
356                 i = 3;
357                 priv->qos_data.def_qos_parm.ac[i].cw_min =
358                         cpu_to_le16((cw_min + 1) / 4 - 1);
359                 priv->qos_data.def_qos_parm.ac[i].cw_max =
360                         cpu_to_le16((cw_max + 1) / 2 - 1);
361                 priv->qos_data.def_qos_parm.ac[i].aifsn = 2;
362                 priv->qos_data.def_qos_parm.ac[i].reserved1 = 0;
363                 if (is_legacy)
364                         priv->qos_data.def_qos_parm.ac[i].edca_txop =
365                                 cpu_to_le16(3264);
366                 else
367                         priv->qos_data.def_qos_parm.ac[i].edca_txop =
368                                 cpu_to_le16(1504);
369         } else {
370                 for (i = 1; i < 4; i++) {
371                         priv->qos_data.def_qos_parm.ac[i].cw_min =
372                                 cpu_to_le16(cw_min);
373                         priv->qos_data.def_qos_parm.ac[i].cw_max =
374                                 cpu_to_le16(cw_max);
375                         priv->qos_data.def_qos_parm.ac[i].aifsn = aifs;
376                         priv->qos_data.def_qos_parm.ac[i].edca_txop = 0;
377                         priv->qos_data.def_qos_parm.ac[i].reserved1 = 0;
378                 }
379         }
380         IWL_DEBUG_QOS("set QoS to default \n");
381
382         spin_unlock_irqrestore(&priv->lock, flags);
383 }
384 EXPORT_SYMBOL(iwl_reset_qos);
385
386 #define MAX_BIT_RATE_40_MHZ 0x96 /* 150 Mbps */
387 #define MAX_BIT_RATE_20_MHZ 0x48 /* 72 Mbps */
388 static void iwlcore_init_ht_hw_capab(const struct iwl_priv *priv,
389                               struct ieee80211_ht_info *ht_info,
390                               enum ieee80211_band band)
391 {
392         u16 max_bit_rate = 0;
393         u8 rx_chains_num = priv->hw_params.rx_chains_num;
394         u8 tx_chains_num = priv->hw_params.tx_chains_num;
395
396         ht_info->cap = 0;
397         memset(ht_info->supp_mcs_set, 0, 16);
398
399         ht_info->ht_supported = 1;
400
401         ht_info->cap |= (u16)IEEE80211_HT_CAP_GRN_FLD;
402         ht_info->cap |= (u16)IEEE80211_HT_CAP_SGI_20;
403         ht_info->cap |= (u16)(IEEE80211_HT_CAP_MIMO_PS &
404                              (IWL_MIMO_PS_NONE << 2));
405
406         max_bit_rate = MAX_BIT_RATE_20_MHZ;
407         if (priv->hw_params.fat_channel & BIT(band)) {
408                 ht_info->cap |= (u16)IEEE80211_HT_CAP_SUP_WIDTH;
409                 ht_info->cap |= (u16)IEEE80211_HT_CAP_SGI_40;
410                 ht_info->supp_mcs_set[4] = 0x01;
411                 max_bit_rate = MAX_BIT_RATE_40_MHZ;
412         }
413
414         if (priv->cfg->mod_params->amsdu_size_8K)
415                 ht_info->cap |= (u16)IEEE80211_HT_CAP_MAX_AMSDU;
416
417         ht_info->ampdu_factor = CFG_HT_RX_AMPDU_FACTOR_DEF;
418         ht_info->ampdu_density = CFG_HT_MPDU_DENSITY_DEF;
419
420         ht_info->supp_mcs_set[0] = 0xFF;
421         if (rx_chains_num >= 2)
422                 ht_info->supp_mcs_set[1] = 0xFF;
423         if (rx_chains_num >= 3)
424                 ht_info->supp_mcs_set[2] = 0xFF;
425
426         /* Highest supported Rx data rate */
427         max_bit_rate *= rx_chains_num;
428         ht_info->supp_mcs_set[10] = (u8)(max_bit_rate & 0x00FF);
429         ht_info->supp_mcs_set[11] = (u8)((max_bit_rate & 0xFF00) >> 8);
430
431         /* Tx MCS capabilities */
432         ht_info->supp_mcs_set[12] = IEEE80211_HT_CAP_MCS_TX_DEFINED;
433         if (tx_chains_num != rx_chains_num) {
434                 ht_info->supp_mcs_set[12] |= IEEE80211_HT_CAP_MCS_TX_RX_DIFF;
435                 ht_info->supp_mcs_set[12] |= ((tx_chains_num - 1) << 2);
436         }
437 }
438
439 static void iwlcore_init_hw_rates(struct iwl_priv *priv,
440                               struct ieee80211_rate *rates)
441 {
442         int i;
443
444         for (i = 0; i < IWL_RATE_COUNT; i++) {
445                 rates[i].bitrate = iwl_rates[i].ieee * 5;
446                 rates[i].hw_value = i; /* Rate scaling will work on indexes */
447                 rates[i].hw_value_short = i;
448                 rates[i].flags = 0;
449                 if ((i > IWL_LAST_OFDM_RATE) || (i < IWL_FIRST_OFDM_RATE)) {
450                         /*
451                          * If CCK != 1M then set short preamble rate flag.
452                          */
453                         rates[i].flags |=
454                                 (iwl_rates[i].plcp == IWL_RATE_1M_PLCP) ?
455                                         0 : IEEE80211_RATE_SHORT_PREAMBLE;
456                 }
457         }
458 }
459
460 /**
461  * iwlcore_init_geos - Initialize mac80211's geo/channel info based from eeprom
462  */
463 static int iwlcore_init_geos(struct iwl_priv *priv)
464 {
465         struct iwl_channel_info *ch;
466         struct ieee80211_supported_band *sband;
467         struct ieee80211_channel *channels;
468         struct ieee80211_channel *geo_ch;
469         struct ieee80211_rate *rates;
470         int i = 0;
471
472         if (priv->bands[IEEE80211_BAND_2GHZ].n_bitrates ||
473             priv->bands[IEEE80211_BAND_5GHZ].n_bitrates) {
474                 IWL_DEBUG_INFO("Geography modes already initialized.\n");
475                 set_bit(STATUS_GEO_CONFIGURED, &priv->status);
476                 return 0;
477         }
478
479         channels = kzalloc(sizeof(struct ieee80211_channel) *
480                            priv->channel_count, GFP_KERNEL);
481         if (!channels)
482                 return -ENOMEM;
483
484         rates = kzalloc((sizeof(struct ieee80211_rate) * (IWL_RATE_COUNT + 1)),
485                         GFP_KERNEL);
486         if (!rates) {
487                 kfree(channels);
488                 return -ENOMEM;
489         }
490
491         /* 5.2GHz channels start after the 2.4GHz channels */
492         sband = &priv->bands[IEEE80211_BAND_5GHZ];
493         sband->channels = &channels[ARRAY_SIZE(iwl_eeprom_band_1)];
494         /* just OFDM */
495         sband->bitrates = &rates[IWL_FIRST_OFDM_RATE];
496         sband->n_bitrates = IWL_RATE_COUNT - IWL_FIRST_OFDM_RATE;
497
498         if (priv->cfg->sku & IWL_SKU_N)
499                 iwlcore_init_ht_hw_capab(priv, &sband->ht_info,
500                                          IEEE80211_BAND_5GHZ);
501
502         sband = &priv->bands[IEEE80211_BAND_2GHZ];
503         sband->channels = channels;
504         /* OFDM & CCK */
505         sband->bitrates = rates;
506         sband->n_bitrates = IWL_RATE_COUNT;
507
508         if (priv->cfg->sku & IWL_SKU_N)
509                 iwlcore_init_ht_hw_capab(priv, &sband->ht_info,
510                                          IEEE80211_BAND_2GHZ);
511
512         priv->ieee_channels = channels;
513         priv->ieee_rates = rates;
514
515         iwlcore_init_hw_rates(priv, rates);
516
517         for (i = 0;  i < priv->channel_count; i++) {
518                 ch = &priv->channel_info[i];
519
520                 /* FIXME: might be removed if scan is OK */
521                 if (!is_channel_valid(ch))
522                         continue;
523
524                 if (is_channel_a_band(ch))
525                         sband =  &priv->bands[IEEE80211_BAND_5GHZ];
526                 else
527                         sband =  &priv->bands[IEEE80211_BAND_2GHZ];
528
529                 geo_ch = &sband->channels[sband->n_channels++];
530
531                 geo_ch->center_freq =
532                                 ieee80211_channel_to_frequency(ch->channel);
533                 geo_ch->max_power = ch->max_power_avg;
534                 geo_ch->max_antenna_gain = 0xff;
535                 geo_ch->hw_value = ch->channel;
536
537                 if (is_channel_valid(ch)) {
538                         if (!(ch->flags & EEPROM_CHANNEL_IBSS))
539                                 geo_ch->flags |= IEEE80211_CHAN_NO_IBSS;
540
541                         if (!(ch->flags & EEPROM_CHANNEL_ACTIVE))
542                                 geo_ch->flags |= IEEE80211_CHAN_PASSIVE_SCAN;
543
544                         if (ch->flags & EEPROM_CHANNEL_RADAR)
545                                 geo_ch->flags |= IEEE80211_CHAN_RADAR;
546
547                         geo_ch->flags |= ch->fat_extension_channel;
548
549                         if (ch->max_power_avg > priv->tx_power_channel_lmt)
550                                 priv->tx_power_channel_lmt = ch->max_power_avg;
551                 } else {
552                         geo_ch->flags |= IEEE80211_CHAN_DISABLED;
553                 }
554
555                 /* Save flags for reg domain usage */
556                 geo_ch->orig_flags = geo_ch->flags;
557
558                 IWL_DEBUG_INFO("Channel %d Freq=%d[%sGHz] %s flag=0x%X\n",
559                                 ch->channel, geo_ch->center_freq,
560                                 is_channel_a_band(ch) ?  "5.2" : "2.4",
561                                 geo_ch->flags & IEEE80211_CHAN_DISABLED ?
562                                 "restricted" : "valid",
563                                  geo_ch->flags);
564         }
565
566         if ((priv->bands[IEEE80211_BAND_5GHZ].n_channels == 0) &&
567              priv->cfg->sku & IWL_SKU_A) {
568                 printk(KERN_INFO DRV_NAME
569                        ": Incorrectly detected BG card as ABG.  Please send "
570                        "your PCI ID 0x%04X:0x%04X to maintainer.\n",
571                        priv->pci_dev->device, priv->pci_dev->subsystem_device);
572                 priv->cfg->sku &= ~IWL_SKU_A;
573         }
574
575         printk(KERN_INFO DRV_NAME
576                ": Tunable channels: %d 802.11bg, %d 802.11a channels\n",
577                priv->bands[IEEE80211_BAND_2GHZ].n_channels,
578                priv->bands[IEEE80211_BAND_5GHZ].n_channels);
579
580
581         set_bit(STATUS_GEO_CONFIGURED, &priv->status);
582
583         return 0;
584 }
585
586 /*
587  * iwlcore_free_geos - undo allocations in iwlcore_init_geos
588  */
589 static void iwlcore_free_geos(struct iwl_priv *priv)
590 {
591         kfree(priv->ieee_channels);
592         kfree(priv->ieee_rates);
593         clear_bit(STATUS_GEO_CONFIGURED, &priv->status);
594 }
595
596 static u8 is_single_rx_stream(struct iwl_priv *priv)
597 {
598         return !priv->current_ht_config.is_ht ||
599                ((priv->current_ht_config.supp_mcs_set[1] == 0) &&
600                 (priv->current_ht_config.supp_mcs_set[2] == 0)) ||
601                priv->ps_mode == IWL_MIMO_PS_STATIC;
602 }
603
604 static u8 iwl_is_channel_extension(struct iwl_priv *priv,
605                                    enum ieee80211_band band,
606                                    u16 channel, u8 extension_chan_offset)
607 {
608         const struct iwl_channel_info *ch_info;
609
610         ch_info = iwl_get_channel_info(priv, band, channel);
611         if (!is_channel_valid(ch_info))
612                 return 0;
613
614         if (extension_chan_offset == IEEE80211_HT_IE_CHA_SEC_ABOVE)
615                 return !(ch_info->fat_extension_channel &
616                                         IEEE80211_CHAN_NO_FAT_ABOVE);
617         else if (extension_chan_offset == IEEE80211_HT_IE_CHA_SEC_BELOW)
618                 return !(ch_info->fat_extension_channel &
619                                         IEEE80211_CHAN_NO_FAT_BELOW);
620
621         return 0;
622 }
623
624 u8 iwl_is_fat_tx_allowed(struct iwl_priv *priv,
625                              struct ieee80211_ht_info *sta_ht_inf)
626 {
627         struct iwl_ht_info *iwl_ht_conf = &priv->current_ht_config;
628
629         if ((!iwl_ht_conf->is_ht) ||
630            (iwl_ht_conf->supported_chan_width != IWL_CHANNEL_WIDTH_40MHZ) ||
631            (iwl_ht_conf->extension_chan_offset == IEEE80211_HT_IE_CHA_SEC_NONE))
632                 return 0;
633
634         if (sta_ht_inf) {
635                 if ((!sta_ht_inf->ht_supported) ||
636                    (!(sta_ht_inf->cap & IEEE80211_HT_CAP_SUP_WIDTH)))
637                         return 0;
638         }
639
640         return iwl_is_channel_extension(priv, priv->band,
641                                          iwl_ht_conf->control_channel,
642                                          iwl_ht_conf->extension_chan_offset);
643 }
644 EXPORT_SYMBOL(iwl_is_fat_tx_allowed);
645
646 void iwl_set_rxon_ht(struct iwl_priv *priv, struct iwl_ht_info *ht_info)
647 {
648         struct iwl_rxon_cmd *rxon = &priv->staging_rxon;
649         u32 val;
650
651         if (!ht_info->is_ht)
652                 return;
653
654         /* Set up channel bandwidth:  20 MHz only, or 20/40 mixed if fat ok */
655         if (iwl_is_fat_tx_allowed(priv, NULL))
656                 rxon->flags |= RXON_FLG_CHANNEL_MODE_MIXED_MSK;
657         else
658                 rxon->flags &= ~(RXON_FLG_CHANNEL_MODE_MIXED_MSK |
659                                  RXON_FLG_CHANNEL_MODE_PURE_40_MSK);
660
661         if (le16_to_cpu(rxon->channel) != ht_info->control_channel) {
662                 IWL_DEBUG_ASSOC("control diff than current %d %d\n",
663                                 le16_to_cpu(rxon->channel),
664                                 ht_info->control_channel);
665                 return;
666         }
667
668         /* Note: control channel is opposite of extension channel */
669         switch (ht_info->extension_chan_offset) {
670         case IEEE80211_HT_IE_CHA_SEC_ABOVE:
671                 rxon->flags &= ~(RXON_FLG_CTRL_CHANNEL_LOC_HI_MSK);
672                 break;
673         case IEEE80211_HT_IE_CHA_SEC_BELOW:
674                 rxon->flags |= RXON_FLG_CTRL_CHANNEL_LOC_HI_MSK;
675                 break;
676         case IEEE80211_HT_IE_CHA_SEC_NONE:
677         default:
678                 rxon->flags &= ~RXON_FLG_CHANNEL_MODE_MIXED_MSK;
679                 break;
680         }
681
682         val = ht_info->ht_protection;
683
684         rxon->flags |= cpu_to_le32(val << RXON_FLG_HT_OPERATING_MODE_POS);
685
686         iwl_set_rxon_chain(priv);
687
688         IWL_DEBUG_ASSOC("supported HT rate 0x%X 0x%X 0x%X "
689                         "rxon flags 0x%X operation mode :0x%X "
690                         "extension channel offset 0x%x "
691                         "control chan %d\n",
692                         ht_info->supp_mcs_set[0],
693                         ht_info->supp_mcs_set[1],
694                         ht_info->supp_mcs_set[2],
695                         le32_to_cpu(rxon->flags), ht_info->ht_protection,
696                         ht_info->extension_chan_offset,
697                         ht_info->control_channel);
698         return;
699 }
700 EXPORT_SYMBOL(iwl_set_rxon_ht);
701
702 /*
703  * Determine how many receiver/antenna chains to use.
704  * More provides better reception via diversity.  Fewer saves power.
705  * MIMO (dual stream) requires at least 2, but works better with 3.
706  * This does not determine *which* chains to use, just how many.
707  */
708 static int iwlcore_get_rx_chain_counter(struct iwl_priv *priv,
709                                         u8 *idle_state, u8 *rx_state)
710 {
711         u8 is_single = is_single_rx_stream(priv);
712         u8 is_cam = test_bit(STATUS_POWER_PMI, &priv->status) ? 0 : 1;
713
714         /* # of Rx chains to use when expecting MIMO. */
715         if (is_single || (!is_cam && (priv->ps_mode == IWL_MIMO_PS_STATIC)))
716                 *rx_state = 2;
717         else
718                 *rx_state = 3;
719
720         /* # Rx chains when idling and maybe trying to save power */
721         switch (priv->ps_mode) {
722         case IWL_MIMO_PS_STATIC:
723         case IWL_MIMO_PS_DYNAMIC:
724                 *idle_state = (is_cam) ? 2 : 1;
725                 break;
726         case IWL_MIMO_PS_NONE:
727                 *idle_state = (is_cam) ? *rx_state : 1;
728                 break;
729         default:
730                 *idle_state = 1;
731                 break;
732         }
733
734         return 0;
735 }
736
737 /**
738  * iwl_set_rxon_chain - Set up Rx chain usage in "staging" RXON image
739  *
740  * Selects how many and which Rx receivers/antennas/chains to use.
741  * This should not be used for scan command ... it puts data in wrong place.
742  */
743 void iwl_set_rxon_chain(struct iwl_priv *priv)
744 {
745         u8 is_single = is_single_rx_stream(priv);
746         u8 idle_state, rx_state;
747
748         priv->staging_rxon.rx_chain = 0;
749         rx_state = idle_state = 3;
750
751         /* Tell uCode which antennas are actually connected.
752          * Before first association, we assume all antennas are connected.
753          * Just after first association, iwl_chain_noise_calibration()
754          *    checks which antennas actually *are* connected. */
755         priv->staging_rxon.rx_chain |=
756                     cpu_to_le16(priv->hw_params.valid_rx_ant <<
757                                                  RXON_RX_CHAIN_VALID_POS);
758
759         /* How many receivers should we use? */
760         iwlcore_get_rx_chain_counter(priv, &idle_state, &rx_state);
761         priv->staging_rxon.rx_chain |=
762                 cpu_to_le16(rx_state << RXON_RX_CHAIN_MIMO_CNT_POS);
763         priv->staging_rxon.rx_chain |=
764                 cpu_to_le16(idle_state << RXON_RX_CHAIN_CNT_POS);
765
766         if (!is_single && (rx_state >= 2) &&
767             !test_bit(STATUS_POWER_PMI, &priv->status))
768                 priv->staging_rxon.rx_chain |= RXON_RX_CHAIN_MIMO_FORCE_MSK;
769         else
770                 priv->staging_rxon.rx_chain &= ~RXON_RX_CHAIN_MIMO_FORCE_MSK;
771
772         IWL_DEBUG_ASSOC("rx chain %X\n", priv->staging_rxon.rx_chain);
773 }
774 EXPORT_SYMBOL(iwl_set_rxon_chain);
775
776 /**
777  * iwlcore_set_rxon_channel - Set the phymode and channel values in staging RXON
778  * @phymode: MODE_IEEE80211A sets to 5.2GHz; all else set to 2.4GHz
779  * @channel: Any channel valid for the requested phymode
780
781  * In addition to setting the staging RXON, priv->phymode is also set.
782  *
783  * NOTE:  Does not commit to the hardware; it sets appropriate bit fields
784  * in the staging RXON flag structure based on the phymode
785  */
786 int iwl_set_rxon_channel(struct iwl_priv *priv,
787                                 enum ieee80211_band band,
788                                 u16 channel)
789 {
790         if (!iwl_get_channel_info(priv, band, channel)) {
791                 IWL_DEBUG_INFO("Could not set channel to %d [%d]\n",
792                                channel, band);
793                 return -EINVAL;
794         }
795
796         if ((le16_to_cpu(priv->staging_rxon.channel) == channel) &&
797             (priv->band == band))
798                 return 0;
799
800         priv->staging_rxon.channel = cpu_to_le16(channel);
801         if (band == IEEE80211_BAND_5GHZ)
802                 priv->staging_rxon.flags &= ~RXON_FLG_BAND_24G_MSK;
803         else
804                 priv->staging_rxon.flags |= RXON_FLG_BAND_24G_MSK;
805
806         priv->band = band;
807
808         IWL_DEBUG_INFO("Staging channel set to %d [%d]\n", channel, band);
809
810         return 0;
811 }
812 EXPORT_SYMBOL(iwl_set_rxon_channel);
813
814 int iwl_setup_mac(struct iwl_priv *priv)
815 {
816         int ret;
817         struct ieee80211_hw *hw = priv->hw;
818         hw->rate_control_algorithm = "iwl-agn-rs";
819
820         /* Tell mac80211 our characteristics */
821         hw->flags = IEEE80211_HW_SIGNAL_DBM |
822                     IEEE80211_HW_NOISE_DBM;
823         /* Default value; 4 EDCA QOS priorities */
824         hw->queues = 4;
825         /* queues to support 11n aggregation */
826         if (priv->cfg->sku & IWL_SKU_N)
827                 hw->ampdu_queues = priv->cfg->mod_params->num_of_ampdu_queues;
828
829         hw->conf.beacon_int = 100;
830         hw->max_listen_interval = IWL_CONN_MAX_LISTEN_INTERVAL;
831
832         if (priv->bands[IEEE80211_BAND_2GHZ].n_channels)
833                 priv->hw->wiphy->bands[IEEE80211_BAND_2GHZ] =
834                         &priv->bands[IEEE80211_BAND_2GHZ];
835         if (priv->bands[IEEE80211_BAND_5GHZ].n_channels)
836                 priv->hw->wiphy->bands[IEEE80211_BAND_5GHZ] =
837                         &priv->bands[IEEE80211_BAND_5GHZ];
838
839         ret = ieee80211_register_hw(priv->hw);
840         if (ret) {
841                 IWL_ERROR("Failed to register hw (error %d)\n", ret);
842                 return ret;
843         }
844         priv->mac80211_registered = 1;
845
846         return 0;
847 }
848 EXPORT_SYMBOL(iwl_setup_mac);
849
850 int iwl_set_hw_params(struct iwl_priv *priv)
851 {
852         priv->hw_params.sw_crypto = priv->cfg->mod_params->sw_crypto;
853         priv->hw_params.max_rxq_size = RX_QUEUE_SIZE;
854         priv->hw_params.max_rxq_log = RX_QUEUE_SIZE_LOG;
855         if (priv->cfg->mod_params->amsdu_size_8K)
856                 priv->hw_params.rx_buf_size = IWL_RX_BUF_SIZE_8K;
857         else
858                 priv->hw_params.rx_buf_size = IWL_RX_BUF_SIZE_4K;
859         priv->hw_params.max_pkt_size = priv->hw_params.rx_buf_size - 256;
860
861         if (priv->cfg->mod_params->disable_11n)
862                 priv->cfg->sku &= ~IWL_SKU_N;
863
864         /* Device-specific setup */
865         return priv->cfg->ops->lib->set_hw_params(priv);
866 }
867 EXPORT_SYMBOL(iwl_set_hw_params);
868
869 int iwl_init_drv(struct iwl_priv *priv)
870 {
871         int ret;
872
873         priv->retry_rate = 1;
874         priv->ibss_beacon = NULL;
875
876         spin_lock_init(&priv->lock);
877         spin_lock_init(&priv->power_data.lock);
878         spin_lock_init(&priv->sta_lock);
879         spin_lock_init(&priv->hcmd_lock);
880         spin_lock_init(&priv->lq_mngr.lock);
881
882         INIT_LIST_HEAD(&priv->free_frames);
883
884         mutex_init(&priv->mutex);
885
886         /* Clear the driver's (not device's) station table */
887         iwl_clear_stations_table(priv);
888
889         priv->data_retry_limit = -1;
890         priv->ieee_channels = NULL;
891         priv->ieee_rates = NULL;
892         priv->band = IEEE80211_BAND_2GHZ;
893
894         priv->iw_mode = IEEE80211_IF_TYPE_STA;
895
896         priv->use_ant_b_for_management_frame = 1; /* start with ant B */
897         priv->ps_mode = IWL_MIMO_PS_NONE;
898
899         /* Choose which receivers/antennas to use */
900         iwl_set_rxon_chain(priv);
901         iwl_init_scan_params(priv);
902
903         if (priv->cfg->mod_params->enable_qos)
904                 priv->qos_data.qos_enable = 1;
905
906         iwl_reset_qos(priv);
907
908         priv->qos_data.qos_active = 0;
909         priv->qos_data.qos_cap.val = 0;
910
911         iwl_set_rxon_channel(priv, IEEE80211_BAND_2GHZ, 6);
912
913         priv->rates_mask = IWL_RATES_MASK;
914         /* If power management is turned on, default to AC mode */
915         priv->power_mode = IWL_POWER_AC;
916         priv->tx_power_user_lmt = IWL_TX_POWER_TARGET_POWER_MAX;
917
918         ret = iwl_init_channel_map(priv);
919         if (ret) {
920                 IWL_ERROR("initializing regulatory failed: %d\n", ret);
921                 goto err;
922         }
923
924         ret = iwlcore_init_geos(priv);
925         if (ret) {
926                 IWL_ERROR("initializing geos failed: %d\n", ret);
927                 goto err_free_channel_map;
928         }
929
930         return 0;
931
932 err_free_channel_map:
933         iwl_free_channel_map(priv);
934 err:
935         return ret;
936 }
937 EXPORT_SYMBOL(iwl_init_drv);
938
939 void iwl_free_calib_results(struct iwl_priv *priv)
940 {
941         kfree(priv->calib_results.lo_res);
942         priv->calib_results.lo_res = NULL;
943         priv->calib_results.lo_res_len = 0;
944
945         kfree(priv->calib_results.tx_iq_res);
946         priv->calib_results.tx_iq_res = NULL;
947         priv->calib_results.tx_iq_res_len = 0;
948
949         kfree(priv->calib_results.tx_iq_perd_res);
950         priv->calib_results.tx_iq_perd_res = NULL;
951         priv->calib_results.tx_iq_perd_res_len = 0;
952 }
953 EXPORT_SYMBOL(iwl_free_calib_results);
954
955 int iwl_set_tx_power(struct iwl_priv *priv, s8 tx_power, bool force)
956 {
957         int ret = 0;
958         if (tx_power < IWL_TX_POWER_TARGET_POWER_MIN) {
959                 IWL_WARNING("Requested user TXPOWER %d below limit.\n",
960                             priv->tx_power_user_lmt);
961                 return -EINVAL;
962         }
963
964         if (tx_power > IWL_TX_POWER_TARGET_POWER_MAX) {
965                 IWL_WARNING("Requested user TXPOWER %d above limit.\n",
966                             priv->tx_power_user_lmt);
967                 return -EINVAL;
968         }
969
970         if (priv->tx_power_user_lmt != tx_power)
971                 force = true;
972
973         priv->tx_power_user_lmt = tx_power;
974
975         if (force && priv->cfg->ops->lib->send_tx_power)
976                 ret = priv->cfg->ops->lib->send_tx_power(priv);
977
978         return ret;
979 }
980 EXPORT_SYMBOL(iwl_set_tx_power);
981
982
983 void iwl_uninit_drv(struct iwl_priv *priv)
984 {
985         iwl_free_calib_results(priv);
986         iwlcore_free_geos(priv);
987         iwl_free_channel_map(priv);
988         kfree(priv->scan);
989 }
990 EXPORT_SYMBOL(iwl_uninit_drv);
991
992 int iwl_send_statistics_request(struct iwl_priv *priv, u8 flags)
993 {
994         u32 stat_flags = 0;
995         struct iwl_host_cmd cmd = {
996                 .id = REPLY_STATISTICS_CMD,
997                 .meta.flags = flags,
998                 .len = sizeof(stat_flags),
999                 .data = (u8 *) &stat_flags,
1000         };
1001         return iwl_send_cmd(priv, &cmd);
1002 }
1003 EXPORT_SYMBOL(iwl_send_statistics_request);
1004
1005 /**
1006  * iwl_verify_inst_sparse - verify runtime uCode image in card vs. host,
1007  *   using sample data 100 bytes apart.  If these sample points are good,
1008  *   it's a pretty good bet that everything between them is good, too.
1009  */
1010 static int iwlcore_verify_inst_sparse(struct iwl_priv *priv, __le32 *image, u32 len)
1011 {
1012         u32 val;
1013         int ret = 0;
1014         u32 errcnt = 0;
1015         u32 i;
1016
1017         IWL_DEBUG_INFO("ucode inst image size is %u\n", len);
1018
1019         ret = iwl_grab_nic_access(priv);
1020         if (ret)
1021                 return ret;
1022
1023         for (i = 0; i < len; i += 100, image += 100/sizeof(u32)) {
1024                 /* read data comes through single port, auto-incr addr */
1025                 /* NOTE: Use the debugless read so we don't flood kernel log
1026                  * if IWL_DL_IO is set */
1027                 iwl_write_direct32(priv, HBUS_TARG_MEM_RADDR,
1028                         i + RTC_INST_LOWER_BOUND);
1029                 val = _iwl_read_direct32(priv, HBUS_TARG_MEM_RDAT);
1030                 if (val != le32_to_cpu(*image)) {
1031                         ret = -EIO;
1032                         errcnt++;
1033                         if (errcnt >= 3)
1034                                 break;
1035                 }
1036         }
1037
1038         iwl_release_nic_access(priv);
1039
1040         return ret;
1041 }
1042
1043 /**
1044  * iwlcore_verify_inst_full - verify runtime uCode image in card vs. host,
1045  *     looking at all data.
1046  */
1047 static int iwl_verify_inst_full(struct iwl_priv *priv, __le32 *image,
1048                                  u32 len)
1049 {
1050         u32 val;
1051         u32 save_len = len;
1052         int ret = 0;
1053         u32 errcnt;
1054
1055         IWL_DEBUG_INFO("ucode inst image size is %u\n", len);
1056
1057         ret = iwl_grab_nic_access(priv);
1058         if (ret)
1059                 return ret;
1060
1061         iwl_write_direct32(priv, HBUS_TARG_MEM_RADDR, RTC_INST_LOWER_BOUND);
1062
1063         errcnt = 0;
1064         for (; len > 0; len -= sizeof(u32), image++) {
1065                 /* read data comes through single port, auto-incr addr */
1066                 /* NOTE: Use the debugless read so we don't flood kernel log
1067                  * if IWL_DL_IO is set */
1068                 val = _iwl_read_direct32(priv, HBUS_TARG_MEM_RDAT);
1069                 if (val != le32_to_cpu(*image)) {
1070                         IWL_ERROR("uCode INST section is invalid at "
1071                                   "offset 0x%x, is 0x%x, s/b 0x%x\n",
1072                                   save_len - len, val, le32_to_cpu(*image));
1073                         ret = -EIO;
1074                         errcnt++;
1075                         if (errcnt >= 20)
1076                                 break;
1077                 }
1078         }
1079
1080         iwl_release_nic_access(priv);
1081
1082         if (!errcnt)
1083                 IWL_DEBUG_INFO
1084                     ("ucode image in INSTRUCTION memory is good\n");
1085
1086         return ret;
1087 }
1088
1089 /**
1090  * iwl_verify_ucode - determine which instruction image is in SRAM,
1091  *    and verify its contents
1092  */
1093 int iwl_verify_ucode(struct iwl_priv *priv)
1094 {
1095         __le32 *image;
1096         u32 len;
1097         int ret;
1098
1099         /* Try bootstrap */
1100         image = (__le32 *)priv->ucode_boot.v_addr;
1101         len = priv->ucode_boot.len;
1102         ret = iwlcore_verify_inst_sparse(priv, image, len);
1103         if (!ret) {
1104                 IWL_DEBUG_INFO("Bootstrap uCode is good in inst SRAM\n");
1105                 return 0;
1106         }
1107
1108         /* Try initialize */
1109         image = (__le32 *)priv->ucode_init.v_addr;
1110         len = priv->ucode_init.len;
1111         ret = iwlcore_verify_inst_sparse(priv, image, len);
1112         if (!ret) {
1113                 IWL_DEBUG_INFO("Initialize uCode is good in inst SRAM\n");
1114                 return 0;
1115         }
1116
1117         /* Try runtime/protocol */
1118         image = (__le32 *)priv->ucode_code.v_addr;
1119         len = priv->ucode_code.len;
1120         ret = iwlcore_verify_inst_sparse(priv, image, len);
1121         if (!ret) {
1122                 IWL_DEBUG_INFO("Runtime uCode is good in inst SRAM\n");
1123                 return 0;
1124         }
1125
1126         IWL_ERROR("NO VALID UCODE IMAGE IN INSTRUCTION SRAM!!\n");
1127
1128         /* Since nothing seems to match, show first several data entries in
1129          * instruction SRAM, so maybe visual inspection will give a clue.
1130          * Selection of bootstrap image (vs. other images) is arbitrary. */
1131         image = (__le32 *)priv->ucode_boot.v_addr;
1132         len = priv->ucode_boot.len;
1133         ret = iwl_verify_inst_full(priv, image, len);
1134
1135         return ret;
1136 }
1137 EXPORT_SYMBOL(iwl_verify_ucode);
1138
1139
1140 static const char *desc_lookup(int i)
1141 {
1142         switch (i) {
1143         case 1:
1144                 return "FAIL";
1145         case 2:
1146                 return "BAD_PARAM";
1147         case 3:
1148                 return "BAD_CHECKSUM";
1149         case 4:
1150                 return "NMI_INTERRUPT";
1151         case 5:
1152                 return "SYSASSERT";
1153         case 6:
1154                 return "FATAL_ERROR";
1155         }
1156
1157         return "UNKNOWN";
1158 }
1159
1160 #define ERROR_START_OFFSET  (1 * sizeof(u32))
1161 #define ERROR_ELEM_SIZE     (7 * sizeof(u32))
1162
1163 void iwl_dump_nic_error_log(struct iwl_priv *priv)
1164 {
1165         u32 data2, line;
1166         u32 desc, time, count, base, data1;
1167         u32 blink1, blink2, ilink1, ilink2;
1168         int ret;
1169
1170         if (priv->ucode_type == UCODE_INIT)
1171                 base = le32_to_cpu(priv->card_alive_init.error_event_table_ptr);
1172         else
1173                 base = le32_to_cpu(priv->card_alive.error_event_table_ptr);
1174
1175         if (!priv->cfg->ops->lib->is_valid_rtc_data_addr(base)) {
1176                 IWL_ERROR("Not valid error log pointer 0x%08X\n", base);
1177                 return;
1178         }
1179
1180         ret = iwl_grab_nic_access(priv);
1181         if (ret) {
1182                 IWL_WARNING("Can not read from adapter at this time.\n");
1183                 return;
1184         }
1185
1186         count = iwl_read_targ_mem(priv, base);
1187
1188         if (ERROR_START_OFFSET <= count * ERROR_ELEM_SIZE) {
1189                 IWL_ERROR("Start IWL Error Log Dump:\n");
1190                 IWL_ERROR("Status: 0x%08lX, count: %d\n", priv->status, count);
1191         }
1192
1193         desc = iwl_read_targ_mem(priv, base + 1 * sizeof(u32));
1194         blink1 = iwl_read_targ_mem(priv, base + 3 * sizeof(u32));
1195         blink2 = iwl_read_targ_mem(priv, base + 4 * sizeof(u32));
1196         ilink1 = iwl_read_targ_mem(priv, base + 5 * sizeof(u32));
1197         ilink2 = iwl_read_targ_mem(priv, base + 6 * sizeof(u32));
1198         data1 = iwl_read_targ_mem(priv, base + 7 * sizeof(u32));
1199         data2 = iwl_read_targ_mem(priv, base + 8 * sizeof(u32));
1200         line = iwl_read_targ_mem(priv, base + 9 * sizeof(u32));
1201         time = iwl_read_targ_mem(priv, base + 11 * sizeof(u32));
1202
1203         IWL_ERROR("Desc        Time       "
1204                 "data1      data2      line\n");
1205         IWL_ERROR("%-13s (#%d) %010u 0x%08X 0x%08X %u\n",
1206                 desc_lookup(desc), desc, time, data1, data2, line);
1207         IWL_ERROR("blink1  blink2  ilink1  ilink2\n");
1208         IWL_ERROR("0x%05X 0x%05X 0x%05X 0x%05X\n", blink1, blink2,
1209                 ilink1, ilink2);
1210
1211         iwl_release_nic_access(priv);
1212 }
1213 EXPORT_SYMBOL(iwl_dump_nic_error_log);
1214
1215 #define EVENT_START_OFFSET  (4 * sizeof(u32))
1216
1217 /**
1218  * iwl_print_event_log - Dump error event log to syslog
1219  *
1220  * NOTE: Must be called with iwl4965_grab_nic_access() already obtained!
1221  */
1222 void iwl_print_event_log(struct iwl_priv *priv, u32 start_idx,
1223                                 u32 num_events, u32 mode)
1224 {
1225         u32 i;
1226         u32 base;       /* SRAM byte address of event log header */
1227         u32 event_size; /* 2 u32s, or 3 u32s if timestamp recorded */
1228         u32 ptr;        /* SRAM byte address of log data */
1229         u32 ev, time, data; /* event log data */
1230
1231         if (num_events == 0)
1232                 return;
1233         if (priv->ucode_type == UCODE_INIT)
1234                 base = le32_to_cpu(priv->card_alive_init.log_event_table_ptr);
1235         else
1236                 base = le32_to_cpu(priv->card_alive.log_event_table_ptr);
1237
1238         if (mode == 0)
1239                 event_size = 2 * sizeof(u32);
1240         else
1241                 event_size = 3 * sizeof(u32);
1242
1243         ptr = base + EVENT_START_OFFSET + (start_idx * event_size);
1244
1245         /* "time" is actually "data" for mode 0 (no timestamp).
1246         * place event id # at far right for easier visual parsing. */
1247         for (i = 0; i < num_events; i++) {
1248                 ev = iwl_read_targ_mem(priv, ptr);
1249                 ptr += sizeof(u32);
1250                 time = iwl_read_targ_mem(priv, ptr);
1251                 ptr += sizeof(u32);
1252                 if (mode == 0) {
1253                         /* data, ev */
1254                         IWL_ERROR("EVT_LOG:0x%08x:%04u\n", time, ev);
1255                 } else {
1256                         data = iwl_read_targ_mem(priv, ptr);
1257                         ptr += sizeof(u32);
1258                         IWL_ERROR("EVT_LOGT:%010u:0x%08x:%04u\n",
1259                                         time, data, ev);
1260                 }
1261         }
1262 }
1263 EXPORT_SYMBOL(iwl_print_event_log);
1264
1265
1266 void iwl_dump_nic_event_log(struct iwl_priv *priv)
1267 {
1268         int ret;
1269         u32 base;       /* SRAM byte address of event log header */
1270         u32 capacity;   /* event log capacity in # entries */
1271         u32 mode;       /* 0 - no timestamp, 1 - timestamp recorded */
1272         u32 num_wraps;  /* # times uCode wrapped to top of log */
1273         u32 next_entry; /* index of next entry to be written by uCode */
1274         u32 size;       /* # entries that we'll print */
1275
1276         if (priv->ucode_type == UCODE_INIT)
1277                 base = le32_to_cpu(priv->card_alive_init.log_event_table_ptr);
1278         else
1279                 base = le32_to_cpu(priv->card_alive.log_event_table_ptr);
1280
1281         if (!priv->cfg->ops->lib->is_valid_rtc_data_addr(base)) {
1282                 IWL_ERROR("Invalid event log pointer 0x%08X\n", base);
1283                 return;
1284         }
1285
1286         ret = iwl_grab_nic_access(priv);
1287         if (ret) {
1288                 IWL_WARNING("Can not read from adapter at this time.\n");
1289                 return;
1290         }
1291
1292         /* event log header */
1293         capacity = iwl_read_targ_mem(priv, base);
1294         mode = iwl_read_targ_mem(priv, base + (1 * sizeof(u32)));
1295         num_wraps = iwl_read_targ_mem(priv, base + (2 * sizeof(u32)));
1296         next_entry = iwl_read_targ_mem(priv, base + (3 * sizeof(u32)));
1297
1298         size = num_wraps ? capacity : next_entry;
1299
1300         /* bail out if nothing in log */
1301         if (size == 0) {
1302                 IWL_ERROR("Start IWL Event Log Dump: nothing in log\n");
1303                 iwl_release_nic_access(priv);
1304                 return;
1305         }
1306
1307         IWL_ERROR("Start IWL Event Log Dump: display count %d, wraps %d\n",
1308                         size, num_wraps);
1309
1310         /* if uCode has wrapped back to top of log, start at the oldest entry,
1311          * i.e the next one that uCode would fill. */
1312         if (num_wraps)
1313                 iwl_print_event_log(priv, next_entry,
1314                                         capacity - next_entry, mode);
1315         /* (then/else) start at top of log */
1316         iwl_print_event_log(priv, 0, next_entry, mode);
1317
1318         iwl_release_nic_access(priv);
1319 }
1320 EXPORT_SYMBOL(iwl_dump_nic_event_log);
1321
1322 void iwl_rf_kill_ct_config(struct iwl_priv *priv)
1323 {
1324         struct iwl_ct_kill_config cmd;
1325         unsigned long flags;
1326         int ret = 0;
1327
1328         spin_lock_irqsave(&priv->lock, flags);
1329         iwl_write32(priv, CSR_UCODE_DRV_GP1_CLR,
1330                     CSR_UCODE_DRV_GP1_REG_BIT_CT_KILL_EXIT);
1331         spin_unlock_irqrestore(&priv->lock, flags);
1332
1333         cmd.critical_temperature_R =
1334                 cpu_to_le32(priv->hw_params.ct_kill_threshold);
1335
1336         ret = iwl_send_cmd_pdu(priv, REPLY_CT_KILL_CONFIG_CMD,
1337                                sizeof(cmd), &cmd);
1338         if (ret)
1339                 IWL_ERROR("REPLY_CT_KILL_CONFIG_CMD failed\n");
1340         else
1341                 IWL_DEBUG_INFO("REPLY_CT_KILL_CONFIG_CMD succeeded, "
1342                         "critical temperature is %d\n",
1343                         cmd.critical_temperature_R);
1344 }
1345 EXPORT_SYMBOL(iwl_rf_kill_ct_config);
1346
1347 /*
1348  * CARD_STATE_CMD
1349  *
1350  * Use: Sets the device's internal card state to enable, disable, or halt
1351  *
1352  * When in the 'enable' state the card operates as normal.
1353  * When in the 'disable' state, the card enters into a low power mode.
1354  * When in the 'halt' state, the card is shut down and must be fully
1355  * restarted to come back on.
1356  */
1357 static int iwl_send_card_state(struct iwl_priv *priv, u32 flags, u8 meta_flag)
1358 {
1359         struct iwl_host_cmd cmd = {
1360                 .id = REPLY_CARD_STATE_CMD,
1361                 .len = sizeof(u32),
1362                 .data = &flags,
1363                 .meta.flags = meta_flag,
1364         };
1365
1366         return iwl_send_cmd(priv, &cmd);
1367 }
1368
1369 void iwl_radio_kill_sw_disable_radio(struct iwl_priv *priv)
1370 {
1371         unsigned long flags;
1372
1373         if (test_bit(STATUS_RF_KILL_SW, &priv->status))
1374                 return;
1375
1376         IWL_DEBUG_RF_KILL("Manual SW RF KILL set to: RADIO OFF\n");
1377
1378         iwl_scan_cancel(priv);
1379         /* FIXME: This is a workaround for AP */
1380         if (priv->iw_mode != IEEE80211_IF_TYPE_AP) {
1381                 spin_lock_irqsave(&priv->lock, flags);
1382                 iwl_write32(priv, CSR_UCODE_DRV_GP1_SET,
1383                             CSR_UCODE_SW_BIT_RFKILL);
1384                 spin_unlock_irqrestore(&priv->lock, flags);
1385                 /* call the host command only if no hw rf-kill set */
1386                 if (!test_bit(STATUS_RF_KILL_HW, &priv->status) &&
1387                     iwl_is_ready(priv))
1388                         iwl_send_card_state(priv,
1389                                 CARD_STATE_CMD_DISABLE, 0);
1390                 set_bit(STATUS_RF_KILL_SW, &priv->status);
1391                         /* make sure mac80211 stop sending Tx frame */
1392                 if (priv->mac80211_registered)
1393                         ieee80211_stop_queues(priv->hw);
1394         }
1395 }
1396 EXPORT_SYMBOL(iwl_radio_kill_sw_disable_radio);
1397
1398 int iwl_radio_kill_sw_enable_radio(struct iwl_priv *priv)
1399 {
1400         unsigned long flags;
1401
1402         if (!test_bit(STATUS_RF_KILL_SW, &priv->status))
1403                 return 0;
1404
1405         IWL_DEBUG_RF_KILL("Manual SW RF KILL set to: RADIO ON\n");
1406
1407         spin_lock_irqsave(&priv->lock, flags);
1408         iwl_write32(priv, CSR_UCODE_DRV_GP1_CLR, CSR_UCODE_SW_BIT_RFKILL);
1409
1410         /* If the driver is up it will receive CARD_STATE_NOTIFICATION
1411          * notification where it will clear SW rfkill status.
1412          * Setting it here would break the handler. Only if the
1413          * interface is down we can set here since we don't
1414          * receive any further notification.
1415          */
1416         if (!priv->is_open)
1417                 clear_bit(STATUS_RF_KILL_SW, &priv->status);
1418         spin_unlock_irqrestore(&priv->lock, flags);
1419
1420         /* wake up ucode */
1421         msleep(10);
1422
1423         spin_lock_irqsave(&priv->lock, flags);
1424         iwl_read32(priv, CSR_UCODE_DRV_GP1);
1425         if (!iwl_grab_nic_access(priv))
1426                 iwl_release_nic_access(priv);
1427         spin_unlock_irqrestore(&priv->lock, flags);
1428
1429         if (test_bit(STATUS_RF_KILL_HW, &priv->status)) {
1430                 IWL_DEBUG_RF_KILL("Can not turn radio back on - "
1431                                   "disabled by HW switch\n");
1432                 return 0;
1433         }
1434
1435         /* If the driver is already loaded, it will receive
1436          * CARD_STATE_NOTIFICATION notifications and the handler will
1437          * call restart to reload the driver.
1438          */
1439         return 1;
1440 }
1441 EXPORT_SYMBOL(iwl_radio_kill_sw_enable_radio);