Merge branch 'master' of git://git.kernel.org/pub/scm/linux/kernel/git/linville/wirel...
[linux-2.6.git] / drivers / net / wireless / iwlwifi / iwl-core.c
1 /******************************************************************************
2  *
3  * GPL LICENSE SUMMARY
4  *
5  * Copyright(c) 2008 - 2010 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 <linux/sched.h>
33 #include <net/mac80211.h>
34
35 #include "iwl-eeprom.h"
36 #include "iwl-dev.h" /* FIXME: remove */
37 #include "iwl-debug.h"
38 #include "iwl-core.h"
39 #include "iwl-io.h"
40 #include "iwl-power.h"
41 #include "iwl-sta.h"
42 #include "iwl-helpers.h"
43
44
45 MODULE_DESCRIPTION("iwl core");
46 MODULE_VERSION(IWLWIFI_VERSION);
47 MODULE_AUTHOR(DRV_COPYRIGHT " " DRV_AUTHOR);
48 MODULE_LICENSE("GPL");
49
50 /*
51  * set bt_coex_active to true, uCode will do kill/defer
52  * every time the priority line is asserted (BT is sending signals on the
53  * priority line in the PCIx).
54  * set bt_coex_active to false, uCode will ignore the BT activity and
55  * perform the normal operation
56  *
57  * User might experience transmit issue on some platform due to WiFi/BT
58  * co-exist problem. The possible behaviors are:
59  *   Able to scan and finding all the available AP
60  *   Not able to associate with any AP
61  * On those platforms, WiFi communication can be restored by set
62  * "bt_coex_active" module parameter to "false"
63  *
64  * default: bt_coex_active = true (BT_COEX_ENABLE)
65  */
66 static bool bt_coex_active = true;
67 module_param(bt_coex_active, bool, S_IRUGO);
68 MODULE_PARM_DESC(bt_coex_active, "enable wifi/bluetooth co-exist\n");
69
70 static struct iwl_wimax_coex_event_entry cu_priorities[COEX_NUM_OF_EVENTS] = {
71         {COEX_CU_UNASSOC_IDLE_RP, COEX_CU_UNASSOC_IDLE_WP,
72          0, COEX_UNASSOC_IDLE_FLAGS},
73         {COEX_CU_UNASSOC_MANUAL_SCAN_RP, COEX_CU_UNASSOC_MANUAL_SCAN_WP,
74          0, COEX_UNASSOC_MANUAL_SCAN_FLAGS},
75         {COEX_CU_UNASSOC_AUTO_SCAN_RP, COEX_CU_UNASSOC_AUTO_SCAN_WP,
76          0, COEX_UNASSOC_AUTO_SCAN_FLAGS},
77         {COEX_CU_CALIBRATION_RP, COEX_CU_CALIBRATION_WP,
78          0, COEX_CALIBRATION_FLAGS},
79         {COEX_CU_PERIODIC_CALIBRATION_RP, COEX_CU_PERIODIC_CALIBRATION_WP,
80          0, COEX_PERIODIC_CALIBRATION_FLAGS},
81         {COEX_CU_CONNECTION_ESTAB_RP, COEX_CU_CONNECTION_ESTAB_WP,
82          0, COEX_CONNECTION_ESTAB_FLAGS},
83         {COEX_CU_ASSOCIATED_IDLE_RP, COEX_CU_ASSOCIATED_IDLE_WP,
84          0, COEX_ASSOCIATED_IDLE_FLAGS},
85         {COEX_CU_ASSOC_MANUAL_SCAN_RP, COEX_CU_ASSOC_MANUAL_SCAN_WP,
86          0, COEX_ASSOC_MANUAL_SCAN_FLAGS},
87         {COEX_CU_ASSOC_AUTO_SCAN_RP, COEX_CU_ASSOC_AUTO_SCAN_WP,
88          0, COEX_ASSOC_AUTO_SCAN_FLAGS},
89         {COEX_CU_ASSOC_ACTIVE_LEVEL_RP, COEX_CU_ASSOC_ACTIVE_LEVEL_WP,
90          0, COEX_ASSOC_ACTIVE_LEVEL_FLAGS},
91         {COEX_CU_RF_ON_RP, COEX_CU_RF_ON_WP, 0, COEX_CU_RF_ON_FLAGS},
92         {COEX_CU_RF_OFF_RP, COEX_CU_RF_OFF_WP, 0, COEX_RF_OFF_FLAGS},
93         {COEX_CU_STAND_ALONE_DEBUG_RP, COEX_CU_STAND_ALONE_DEBUG_WP,
94          0, COEX_STAND_ALONE_DEBUG_FLAGS},
95         {COEX_CU_IPAN_ASSOC_LEVEL_RP, COEX_CU_IPAN_ASSOC_LEVEL_WP,
96          0, COEX_IPAN_ASSOC_LEVEL_FLAGS},
97         {COEX_CU_RSRVD1_RP, COEX_CU_RSRVD1_WP, 0, COEX_RSRVD1_FLAGS},
98         {COEX_CU_RSRVD2_RP, COEX_CU_RSRVD2_WP, 0, COEX_RSRVD2_FLAGS}
99 };
100
101 #define IWL_DECLARE_RATE_INFO(r, s, ip, in, rp, rn, pp, np)    \
102         [IWL_RATE_##r##M_INDEX] = { IWL_RATE_##r##M_PLCP,      \
103                                     IWL_RATE_SISO_##s##M_PLCP, \
104                                     IWL_RATE_MIMO2_##s##M_PLCP,\
105                                     IWL_RATE_MIMO3_##s##M_PLCP,\
106                                     IWL_RATE_##r##M_IEEE,      \
107                                     IWL_RATE_##ip##M_INDEX,    \
108                                     IWL_RATE_##in##M_INDEX,    \
109                                     IWL_RATE_##rp##M_INDEX,    \
110                                     IWL_RATE_##rn##M_INDEX,    \
111                                     IWL_RATE_##pp##M_INDEX,    \
112                                     IWL_RATE_##np##M_INDEX }
113
114 u32 iwl_debug_level;
115 EXPORT_SYMBOL(iwl_debug_level);
116
117 static irqreturn_t iwl_isr(int irq, void *data);
118
119 /*
120  * Parameter order:
121  *   rate, ht rate, prev rate, next rate, prev tgg rate, next tgg rate
122  *
123  * If there isn't a valid next or previous rate then INV is used which
124  * maps to IWL_RATE_INVALID
125  *
126  */
127 const struct iwl_rate_info iwl_rates[IWL_RATE_COUNT] = {
128         IWL_DECLARE_RATE_INFO(1, INV, INV, 2, INV, 2, INV, 2),    /*  1mbps */
129         IWL_DECLARE_RATE_INFO(2, INV, 1, 5, 1, 5, 1, 5),          /*  2mbps */
130         IWL_DECLARE_RATE_INFO(5, INV, 2, 6, 2, 11, 2, 11),        /*5.5mbps */
131         IWL_DECLARE_RATE_INFO(11, INV, 9, 12, 9, 12, 5, 18),      /* 11mbps */
132         IWL_DECLARE_RATE_INFO(6, 6, 5, 9, 5, 11, 5, 11),        /*  6mbps */
133         IWL_DECLARE_RATE_INFO(9, 6, 6, 11, 6, 11, 5, 11),       /*  9mbps */
134         IWL_DECLARE_RATE_INFO(12, 12, 11, 18, 11, 18, 11, 18),   /* 12mbps */
135         IWL_DECLARE_RATE_INFO(18, 18, 12, 24, 12, 24, 11, 24),   /* 18mbps */
136         IWL_DECLARE_RATE_INFO(24, 24, 18, 36, 18, 36, 18, 36),   /* 24mbps */
137         IWL_DECLARE_RATE_INFO(36, 36, 24, 48, 24, 48, 24, 48),   /* 36mbps */
138         IWL_DECLARE_RATE_INFO(48, 48, 36, 54, 36, 54, 36, 54),   /* 48mbps */
139         IWL_DECLARE_RATE_INFO(54, 54, 48, INV, 48, INV, 48, INV),/* 54mbps */
140         IWL_DECLARE_RATE_INFO(60, 60, 48, INV, 48, INV, 48, INV),/* 60mbps */
141         /* FIXME:RS:          ^^    should be INV (legacy) */
142 };
143 EXPORT_SYMBOL(iwl_rates);
144
145 /**
146  * translate ucode response to mac80211 tx status control values
147  */
148 void iwl_hwrate_to_tx_control(struct iwl_priv *priv, u32 rate_n_flags,
149                                   struct ieee80211_tx_info *info)
150 {
151         struct ieee80211_tx_rate *r = &info->control.rates[0];
152
153         info->antenna_sel_tx =
154                 ((rate_n_flags & RATE_MCS_ANT_ABC_MSK) >> RATE_MCS_ANT_POS);
155         if (rate_n_flags & RATE_MCS_HT_MSK)
156                 r->flags |= IEEE80211_TX_RC_MCS;
157         if (rate_n_flags & RATE_MCS_GF_MSK)
158                 r->flags |= IEEE80211_TX_RC_GREEN_FIELD;
159         if (rate_n_flags & RATE_MCS_HT40_MSK)
160                 r->flags |= IEEE80211_TX_RC_40_MHZ_WIDTH;
161         if (rate_n_flags & RATE_MCS_DUP_MSK)
162                 r->flags |= IEEE80211_TX_RC_DUP_DATA;
163         if (rate_n_flags & RATE_MCS_SGI_MSK)
164                 r->flags |= IEEE80211_TX_RC_SHORT_GI;
165         r->idx = iwl_hwrate_to_mac80211_idx(rate_n_flags, info->band);
166 }
167 EXPORT_SYMBOL(iwl_hwrate_to_tx_control);
168
169 int iwl_hwrate_to_plcp_idx(u32 rate_n_flags)
170 {
171         int idx = 0;
172
173         /* HT rate format */
174         if (rate_n_flags & RATE_MCS_HT_MSK) {
175                 idx = (rate_n_flags & 0xff);
176
177                 if (idx >= IWL_RATE_MIMO3_6M_PLCP)
178                         idx = idx - IWL_RATE_MIMO3_6M_PLCP;
179                 else if (idx >= IWL_RATE_MIMO2_6M_PLCP)
180                         idx = idx - IWL_RATE_MIMO2_6M_PLCP;
181
182                 idx += IWL_FIRST_OFDM_RATE;
183                 /* skip 9M not supported in ht*/
184                 if (idx >= IWL_RATE_9M_INDEX)
185                         idx += 1;
186                 if ((idx >= IWL_FIRST_OFDM_RATE) && (idx <= IWL_LAST_OFDM_RATE))
187                         return idx;
188
189         /* legacy rate format, search for match in table */
190         } else {
191                 for (idx = 0; idx < ARRAY_SIZE(iwl_rates); idx++)
192                         if (iwl_rates[idx].plcp == (rate_n_flags & 0xFF))
193                                 return idx;
194         }
195
196         return -1;
197 }
198 EXPORT_SYMBOL(iwl_hwrate_to_plcp_idx);
199
200 int iwl_hwrate_to_mac80211_idx(u32 rate_n_flags, enum ieee80211_band band)
201 {
202         int idx = 0;
203         int band_offset = 0;
204
205         /* HT rate format: mac80211 wants an MCS number, which is just LSB */
206         if (rate_n_flags & RATE_MCS_HT_MSK) {
207                 idx = (rate_n_flags & 0xff);
208                 return idx;
209         /* Legacy rate format, search for match in table */
210         } else {
211                 if (band == IEEE80211_BAND_5GHZ)
212                         band_offset = IWL_FIRST_OFDM_RATE;
213                 for (idx = band_offset; idx < IWL_RATE_COUNT_LEGACY; idx++)
214                         if (iwl_rates[idx].plcp == (rate_n_flags & 0xFF))
215                                 return idx - band_offset;
216         }
217
218         return -1;
219 }
220
221 u8 iwl_toggle_tx_ant(struct iwl_priv *priv, u8 ant)
222 {
223         int i;
224         u8 ind = ant;
225         for (i = 0; i < RATE_ANT_NUM - 1; i++) {
226                 ind = (ind + 1) < RATE_ANT_NUM ?  ind + 1 : 0;
227                 if (priv->hw_params.valid_tx_ant & BIT(ind))
228                         return ind;
229         }
230         return ant;
231 }
232 EXPORT_SYMBOL(iwl_toggle_tx_ant);
233
234 const u8 iwl_bcast_addr[ETH_ALEN] = { 0xFF, 0xFF, 0xFF, 0xFF, 0xFF, 0xFF };
235 EXPORT_SYMBOL(iwl_bcast_addr);
236
237
238 /* This function both allocates and initializes hw and priv. */
239 struct ieee80211_hw *iwl_alloc_all(struct iwl_cfg *cfg,
240                 struct ieee80211_ops *hw_ops)
241 {
242         struct iwl_priv *priv;
243
244         /* mac80211 allocates memory for this device instance, including
245          *   space for this driver's private structure */
246         struct ieee80211_hw *hw =
247                 ieee80211_alloc_hw(sizeof(struct iwl_priv), hw_ops);
248         if (hw == NULL) {
249                 printk(KERN_ERR "%s: Can not allocate network device\n",
250                        cfg->name);
251                 goto out;
252         }
253
254         priv = hw->priv;
255         priv->hw = hw;
256
257 out:
258         return hw;
259 }
260 EXPORT_SYMBOL(iwl_alloc_all);
261
262 void iwl_hw_detect(struct iwl_priv *priv)
263 {
264         priv->hw_rev = _iwl_read32(priv, CSR_HW_REV);
265         priv->hw_wa_rev = _iwl_read32(priv, CSR_HW_REV_WA_REG);
266         pci_read_config_byte(priv->pci_dev, PCI_REVISION_ID, &priv->rev_id);
267 }
268 EXPORT_SYMBOL(iwl_hw_detect);
269
270 int iwl_hw_nic_init(struct iwl_priv *priv)
271 {
272         unsigned long flags;
273         struct iwl_rx_queue *rxq = &priv->rxq;
274         int ret;
275
276         /* nic_init */
277         spin_lock_irqsave(&priv->lock, flags);
278         priv->cfg->ops->lib->apm_ops.init(priv);
279
280         /* Set interrupt coalescing calibration timer to default (512 usecs) */
281         iwl_write8(priv, CSR_INT_COALESCING, IWL_HOST_INT_CALIB_TIMEOUT_DEF);
282
283         spin_unlock_irqrestore(&priv->lock, flags);
284
285         ret = priv->cfg->ops->lib->apm_ops.set_pwr_src(priv, IWL_PWR_SRC_VMAIN);
286
287         priv->cfg->ops->lib->apm_ops.config(priv);
288
289         /* Allocate the RX queue, or reset if it is already allocated */
290         if (!rxq->bd) {
291                 ret = iwl_rx_queue_alloc(priv);
292                 if (ret) {
293                         IWL_ERR(priv, "Unable to initialize Rx queue\n");
294                         return -ENOMEM;
295                 }
296         } else
297                 iwl_rx_queue_reset(priv, rxq);
298
299         iwl_rx_replenish(priv);
300
301         iwl_rx_init(priv, rxq);
302
303         spin_lock_irqsave(&priv->lock, flags);
304
305         rxq->need_update = 1;
306         iwl_rx_queue_update_write_ptr(priv, rxq);
307
308         spin_unlock_irqrestore(&priv->lock, flags);
309
310         /* Allocate and init all Tx and Command queues */
311         ret = iwl_txq_ctx_reset(priv);
312         if (ret)
313                 return ret;
314
315         set_bit(STATUS_INIT, &priv->status);
316
317         return 0;
318 }
319 EXPORT_SYMBOL(iwl_hw_nic_init);
320
321 /*
322  * QoS  support
323 */
324 void iwl_activate_qos(struct iwl_priv *priv, u8 force)
325 {
326         if (test_bit(STATUS_EXIT_PENDING, &priv->status))
327                 return;
328
329         priv->qos_data.def_qos_parm.qos_flags = 0;
330
331         if (priv->qos_data.qos_cap.q_AP.queue_request &&
332             !priv->qos_data.qos_cap.q_AP.txop_request)
333                 priv->qos_data.def_qos_parm.qos_flags |=
334                         QOS_PARAM_FLG_TXOP_TYPE_MSK;
335         if (priv->qos_data.qos_active)
336                 priv->qos_data.def_qos_parm.qos_flags |=
337                         QOS_PARAM_FLG_UPDATE_EDCA_MSK;
338
339         if (priv->current_ht_config.is_ht)
340                 priv->qos_data.def_qos_parm.qos_flags |= QOS_PARAM_FLG_TGN_MSK;
341
342         if (force || iwl_is_associated(priv)) {
343                 IWL_DEBUG_QOS(priv, "send QoS cmd with Qos active=%d FLAGS=0x%X\n",
344                                 priv->qos_data.qos_active,
345                                 priv->qos_data.def_qos_parm.qos_flags);
346
347                 iwl_send_cmd_pdu_async(priv, REPLY_QOS_PARAM,
348                                        sizeof(struct iwl_qosparam_cmd),
349                                        &priv->qos_data.def_qos_parm, NULL);
350         }
351 }
352 EXPORT_SYMBOL(iwl_activate_qos);
353
354 /*
355  * AC        CWmin         CW max      AIFSN      TXOP Limit    TXOP Limit
356  *                                              (802.11b)      (802.11a/g)
357  * AC_BK      15            1023        7           0               0
358  * AC_BE      15            1023        3           0               0
359  * AC_VI       7              15        2          6.016ms       3.008ms
360  * AC_VO       3               7        2          3.264ms       1.504ms
361  */
362 void iwl_reset_qos(struct iwl_priv *priv)
363 {
364         u16 cw_min = 15;
365         u16 cw_max = 1023;
366         u8 aifs = 2;
367         bool is_legacy = false;
368         unsigned long flags;
369         int i;
370
371         spin_lock_irqsave(&priv->lock, flags);
372         /* QoS always active in AP and ADHOC mode
373          * In STA mode wait for association
374          */
375         if (priv->iw_mode == NL80211_IFTYPE_ADHOC ||
376             priv->iw_mode == NL80211_IFTYPE_AP)
377                 priv->qos_data.qos_active = 1;
378         else
379                 priv->qos_data.qos_active = 0;
380
381         /* check for legacy mode */
382         if ((priv->iw_mode == NL80211_IFTYPE_ADHOC &&
383             (priv->active_rate & IWL_OFDM_RATES_MASK) == 0) ||
384             (priv->iw_mode == NL80211_IFTYPE_STATION &&
385             (priv->staging_rxon.flags & RXON_FLG_SHORT_SLOT_MSK) == 0)) {
386                 cw_min = 31;
387                 is_legacy = 1;
388         }
389
390         if (priv->qos_data.qos_active)
391                 aifs = 3;
392
393         /* AC_BE */
394         priv->qos_data.def_qos_parm.ac[0].cw_min = cpu_to_le16(cw_min);
395         priv->qos_data.def_qos_parm.ac[0].cw_max = cpu_to_le16(cw_max);
396         priv->qos_data.def_qos_parm.ac[0].aifsn = aifs;
397         priv->qos_data.def_qos_parm.ac[0].edca_txop = 0;
398         priv->qos_data.def_qos_parm.ac[0].reserved1 = 0;
399
400         if (priv->qos_data.qos_active) {
401                 /* AC_BK */
402                 i = 1;
403                 priv->qos_data.def_qos_parm.ac[i].cw_min = cpu_to_le16(cw_min);
404                 priv->qos_data.def_qos_parm.ac[i].cw_max = cpu_to_le16(cw_max);
405                 priv->qos_data.def_qos_parm.ac[i].aifsn = 7;
406                 priv->qos_data.def_qos_parm.ac[i].edca_txop = 0;
407                 priv->qos_data.def_qos_parm.ac[i].reserved1 = 0;
408
409                 /* AC_VI */
410                 i = 2;
411                 priv->qos_data.def_qos_parm.ac[i].cw_min =
412                         cpu_to_le16((cw_min + 1) / 2 - 1);
413                 priv->qos_data.def_qos_parm.ac[i].cw_max =
414                         cpu_to_le16(cw_min);
415                 priv->qos_data.def_qos_parm.ac[i].aifsn = 2;
416                 if (is_legacy)
417                         priv->qos_data.def_qos_parm.ac[i].edca_txop =
418                                 cpu_to_le16(6016);
419                 else
420                         priv->qos_data.def_qos_parm.ac[i].edca_txop =
421                                 cpu_to_le16(3008);
422                 priv->qos_data.def_qos_parm.ac[i].reserved1 = 0;
423
424                 /* AC_VO */
425                 i = 3;
426                 priv->qos_data.def_qos_parm.ac[i].cw_min =
427                         cpu_to_le16((cw_min + 1) / 4 - 1);
428                 priv->qos_data.def_qos_parm.ac[i].cw_max =
429                         cpu_to_le16((cw_min + 1) / 2 - 1);
430                 priv->qos_data.def_qos_parm.ac[i].aifsn = 2;
431                 priv->qos_data.def_qos_parm.ac[i].reserved1 = 0;
432                 if (is_legacy)
433                         priv->qos_data.def_qos_parm.ac[i].edca_txop =
434                                 cpu_to_le16(3264);
435                 else
436                         priv->qos_data.def_qos_parm.ac[i].edca_txop =
437                                 cpu_to_le16(1504);
438         } else {
439                 for (i = 1; i < 4; i++) {
440                         priv->qos_data.def_qos_parm.ac[i].cw_min =
441                                 cpu_to_le16(cw_min);
442                         priv->qos_data.def_qos_parm.ac[i].cw_max =
443                                 cpu_to_le16(cw_max);
444                         priv->qos_data.def_qos_parm.ac[i].aifsn = aifs;
445                         priv->qos_data.def_qos_parm.ac[i].edca_txop = 0;
446                         priv->qos_data.def_qos_parm.ac[i].reserved1 = 0;
447                 }
448         }
449         IWL_DEBUG_QOS(priv, "set QoS to default \n");
450
451         spin_unlock_irqrestore(&priv->lock, flags);
452 }
453 EXPORT_SYMBOL(iwl_reset_qos);
454
455 #define MAX_BIT_RATE_40_MHZ 150 /* Mbps */
456 #define MAX_BIT_RATE_20_MHZ 72 /* Mbps */
457 static void iwlcore_init_ht_hw_capab(const struct iwl_priv *priv,
458                               struct ieee80211_sta_ht_cap *ht_info,
459                               enum ieee80211_band band)
460 {
461         u16 max_bit_rate = 0;
462         u8 rx_chains_num = priv->hw_params.rx_chains_num;
463         u8 tx_chains_num = priv->hw_params.tx_chains_num;
464
465         ht_info->cap = 0;
466         memset(&ht_info->mcs, 0, sizeof(ht_info->mcs));
467
468         ht_info->ht_supported = true;
469
470         if (priv->cfg->ht_greenfield_support)
471                 ht_info->cap |= IEEE80211_HT_CAP_GRN_FLD;
472         ht_info->cap |= IEEE80211_HT_CAP_SGI_20;
473         max_bit_rate = MAX_BIT_RATE_20_MHZ;
474         if (priv->hw_params.ht40_channel & BIT(band)) {
475                 ht_info->cap |= IEEE80211_HT_CAP_SUP_WIDTH_20_40;
476                 ht_info->cap |= IEEE80211_HT_CAP_SGI_40;
477                 ht_info->mcs.rx_mask[4] = 0x01;
478                 max_bit_rate = MAX_BIT_RATE_40_MHZ;
479         }
480
481         if (priv->cfg->mod_params->amsdu_size_8K)
482                 ht_info->cap |= IEEE80211_HT_CAP_MAX_AMSDU;
483
484         ht_info->ampdu_factor = CFG_HT_RX_AMPDU_FACTOR_DEF;
485         ht_info->ampdu_density = CFG_HT_MPDU_DENSITY_DEF;
486
487         ht_info->mcs.rx_mask[0] = 0xFF;
488         if (rx_chains_num >= 2)
489                 ht_info->mcs.rx_mask[1] = 0xFF;
490         if (rx_chains_num >= 3)
491                 ht_info->mcs.rx_mask[2] = 0xFF;
492
493         /* Highest supported Rx data rate */
494         max_bit_rate *= rx_chains_num;
495         WARN_ON(max_bit_rate & ~IEEE80211_HT_MCS_RX_HIGHEST_MASK);
496         ht_info->mcs.rx_highest = cpu_to_le16(max_bit_rate);
497
498         /* Tx MCS capabilities */
499         ht_info->mcs.tx_params = IEEE80211_HT_MCS_TX_DEFINED;
500         if (tx_chains_num != rx_chains_num) {
501                 ht_info->mcs.tx_params |= IEEE80211_HT_MCS_TX_RX_DIFF;
502                 ht_info->mcs.tx_params |= ((tx_chains_num - 1) <<
503                                 IEEE80211_HT_MCS_TX_MAX_STREAMS_SHIFT);
504         }
505 }
506
507 /**
508  * iwlcore_init_geos - Initialize mac80211's geo/channel info based from eeprom
509  */
510 int iwlcore_init_geos(struct iwl_priv *priv)
511 {
512         struct iwl_channel_info *ch;
513         struct ieee80211_supported_band *sband;
514         struct ieee80211_channel *channels;
515         struct ieee80211_channel *geo_ch;
516         struct ieee80211_rate *rates;
517         int i = 0;
518
519         if (priv->bands[IEEE80211_BAND_2GHZ].n_bitrates ||
520             priv->bands[IEEE80211_BAND_5GHZ].n_bitrates) {
521                 IWL_DEBUG_INFO(priv, "Geography modes already initialized.\n");
522                 set_bit(STATUS_GEO_CONFIGURED, &priv->status);
523                 return 0;
524         }
525
526         channels = kzalloc(sizeof(struct ieee80211_channel) *
527                            priv->channel_count, GFP_KERNEL);
528         if (!channels)
529                 return -ENOMEM;
530
531         rates = kzalloc((sizeof(struct ieee80211_rate) * IWL_RATE_COUNT_LEGACY),
532                         GFP_KERNEL);
533         if (!rates) {
534                 kfree(channels);
535                 return -ENOMEM;
536         }
537
538         /* 5.2GHz channels start after the 2.4GHz channels */
539         sband = &priv->bands[IEEE80211_BAND_5GHZ];
540         sband->channels = &channels[ARRAY_SIZE(iwl_eeprom_band_1)];
541         /* just OFDM */
542         sband->bitrates = &rates[IWL_FIRST_OFDM_RATE];
543         sband->n_bitrates = IWL_RATE_COUNT_LEGACY - IWL_FIRST_OFDM_RATE;
544
545         if (priv->cfg->sku & IWL_SKU_N)
546                 iwlcore_init_ht_hw_capab(priv, &sband->ht_cap,
547                                          IEEE80211_BAND_5GHZ);
548
549         sband = &priv->bands[IEEE80211_BAND_2GHZ];
550         sband->channels = channels;
551         /* OFDM & CCK */
552         sband->bitrates = rates;
553         sband->n_bitrates = IWL_RATE_COUNT_LEGACY;
554
555         if (priv->cfg->sku & IWL_SKU_N)
556                 iwlcore_init_ht_hw_capab(priv, &sband->ht_cap,
557                                          IEEE80211_BAND_2GHZ);
558
559         priv->ieee_channels = channels;
560         priv->ieee_rates = rates;
561
562         for (i = 0;  i < priv->channel_count; i++) {
563                 ch = &priv->channel_info[i];
564
565                 /* FIXME: might be removed if scan is OK */
566                 if (!is_channel_valid(ch))
567                         continue;
568
569                 if (is_channel_a_band(ch))
570                         sband =  &priv->bands[IEEE80211_BAND_5GHZ];
571                 else
572                         sband =  &priv->bands[IEEE80211_BAND_2GHZ];
573
574                 geo_ch = &sband->channels[sband->n_channels++];
575
576                 geo_ch->center_freq =
577                                 ieee80211_channel_to_frequency(ch->channel);
578                 geo_ch->max_power = ch->max_power_avg;
579                 geo_ch->max_antenna_gain = 0xff;
580                 geo_ch->hw_value = ch->channel;
581
582                 if (is_channel_valid(ch)) {
583                         if (!(ch->flags & EEPROM_CHANNEL_IBSS))
584                                 geo_ch->flags |= IEEE80211_CHAN_NO_IBSS;
585
586                         if (!(ch->flags & EEPROM_CHANNEL_ACTIVE))
587                                 geo_ch->flags |= IEEE80211_CHAN_PASSIVE_SCAN;
588
589                         if (ch->flags & EEPROM_CHANNEL_RADAR)
590                                 geo_ch->flags |= IEEE80211_CHAN_RADAR;
591
592                         geo_ch->flags |= ch->ht40_extension_channel;
593
594                         if (ch->max_power_avg > priv->tx_power_device_lmt)
595                                 priv->tx_power_device_lmt = ch->max_power_avg;
596                 } else {
597                         geo_ch->flags |= IEEE80211_CHAN_DISABLED;
598                 }
599
600                 IWL_DEBUG_INFO(priv, "Channel %d Freq=%d[%sGHz] %s flag=0x%X\n",
601                                 ch->channel, geo_ch->center_freq,
602                                 is_channel_a_band(ch) ?  "5.2" : "2.4",
603                                 geo_ch->flags & IEEE80211_CHAN_DISABLED ?
604                                 "restricted" : "valid",
605                                  geo_ch->flags);
606         }
607
608         if ((priv->bands[IEEE80211_BAND_5GHZ].n_channels == 0) &&
609              priv->cfg->sku & IWL_SKU_A) {
610                 IWL_INFO(priv, "Incorrectly detected BG card as ABG. "
611                         "Please send your PCI ID 0x%04X:0x%04X to maintainer.\n",
612                            priv->pci_dev->device,
613                            priv->pci_dev->subsystem_device);
614                 priv->cfg->sku &= ~IWL_SKU_A;
615         }
616
617         IWL_INFO(priv, "Tunable channels: %d 802.11bg, %d 802.11a channels\n",
618                    priv->bands[IEEE80211_BAND_2GHZ].n_channels,
619                    priv->bands[IEEE80211_BAND_5GHZ].n_channels);
620
621         set_bit(STATUS_GEO_CONFIGURED, &priv->status);
622
623         return 0;
624 }
625 EXPORT_SYMBOL(iwlcore_init_geos);
626
627 /*
628  * iwlcore_free_geos - undo allocations in iwlcore_init_geos
629  */
630 void iwlcore_free_geos(struct iwl_priv *priv)
631 {
632         kfree(priv->ieee_channels);
633         kfree(priv->ieee_rates);
634         clear_bit(STATUS_GEO_CONFIGURED, &priv->status);
635 }
636 EXPORT_SYMBOL(iwlcore_free_geos);
637
638 /*
639  *  iwlcore_rts_tx_cmd_flag: Set rts/cts. 3945 and 4965 only share this
640  *  function.
641  */
642 void iwlcore_rts_tx_cmd_flag(struct ieee80211_tx_info *info,
643                                 __le32 *tx_flags)
644 {
645         if (info->control.rates[0].flags & IEEE80211_TX_RC_USE_RTS_CTS) {
646                 *tx_flags |= TX_CMD_FLG_RTS_MSK;
647                 *tx_flags &= ~TX_CMD_FLG_CTS_MSK;
648         } else if (info->control.rates[0].flags & IEEE80211_TX_RC_USE_CTS_PROTECT) {
649                 *tx_flags &= ~TX_CMD_FLG_RTS_MSK;
650                 *tx_flags |= TX_CMD_FLG_CTS_MSK;
651         }
652 }
653 EXPORT_SYMBOL(iwlcore_rts_tx_cmd_flag);
654
655 static bool is_single_rx_stream(struct iwl_priv *priv)
656 {
657         return priv->current_ht_config.smps == IEEE80211_SMPS_STATIC ||
658                priv->current_ht_config.single_chain_sufficient;
659 }
660
661 static u8 iwl_is_channel_extension(struct iwl_priv *priv,
662                                    enum ieee80211_band band,
663                                    u16 channel, u8 extension_chan_offset)
664 {
665         const struct iwl_channel_info *ch_info;
666
667         ch_info = iwl_get_channel_info(priv, band, channel);
668         if (!is_channel_valid(ch_info))
669                 return 0;
670
671         if (extension_chan_offset == IEEE80211_HT_PARAM_CHA_SEC_ABOVE)
672                 return !(ch_info->ht40_extension_channel &
673                                         IEEE80211_CHAN_NO_HT40PLUS);
674         else if (extension_chan_offset == IEEE80211_HT_PARAM_CHA_SEC_BELOW)
675                 return !(ch_info->ht40_extension_channel &
676                                         IEEE80211_CHAN_NO_HT40MINUS);
677
678         return 0;
679 }
680
681 u8 iwl_is_ht40_tx_allowed(struct iwl_priv *priv,
682                          struct ieee80211_sta_ht_cap *sta_ht_inf)
683 {
684         struct iwl_ht_config *ht_conf = &priv->current_ht_config;
685
686         if (!ht_conf->is_ht || !ht_conf->is_40mhz)
687                 return 0;
688
689         /* We do not check for IEEE80211_HT_CAP_SUP_WIDTH_20_40
690          * the bit will not set if it is pure 40MHz case
691          */
692         if (sta_ht_inf) {
693                 if (!sta_ht_inf->ht_supported)
694                         return 0;
695         }
696 #ifdef CONFIG_IWLWIFI_DEBUG
697         if (priv->disable_ht40)
698                 return 0;
699 #endif
700         return iwl_is_channel_extension(priv, priv->band,
701                         le16_to_cpu(priv->staging_rxon.channel),
702                         ht_conf->extension_chan_offset);
703 }
704 EXPORT_SYMBOL(iwl_is_ht40_tx_allowed);
705
706 static u16 iwl_adjust_beacon_interval(u16 beacon_val, u16 max_beacon_val)
707 {
708         u16 new_val = 0;
709         u16 beacon_factor = 0;
710
711         beacon_factor = (beacon_val + max_beacon_val) / max_beacon_val;
712         new_val = beacon_val / beacon_factor;
713
714         if (!new_val)
715                 new_val = max_beacon_val;
716
717         return new_val;
718 }
719
720 void iwl_setup_rxon_timing(struct iwl_priv *priv)
721 {
722         u64 tsf;
723         s32 interval_tm, rem;
724         unsigned long flags;
725         struct ieee80211_conf *conf = NULL;
726         u16 beacon_int;
727
728         conf = ieee80211_get_hw_conf(priv->hw);
729
730         spin_lock_irqsave(&priv->lock, flags);
731         priv->rxon_timing.timestamp = cpu_to_le64(priv->timestamp);
732         priv->rxon_timing.listen_interval = cpu_to_le16(conf->listen_interval);
733
734         if (priv->iw_mode == NL80211_IFTYPE_STATION) {
735                 beacon_int = priv->beacon_int;
736                 priv->rxon_timing.atim_window = 0;
737         } else {
738                 beacon_int = priv->vif->bss_conf.beacon_int;
739
740                 /* TODO: we need to get atim_window from upper stack
741                  * for now we set to 0 */
742                 priv->rxon_timing.atim_window = 0;
743         }
744
745         beacon_int = iwl_adjust_beacon_interval(beacon_int,
746                                 priv->hw_params.max_beacon_itrvl * 1024);
747         priv->rxon_timing.beacon_interval = cpu_to_le16(beacon_int);
748
749         tsf = priv->timestamp; /* tsf is modifed by do_div: copy it */
750         interval_tm = beacon_int * 1024;
751         rem = do_div(tsf, interval_tm);
752         priv->rxon_timing.beacon_init_val = cpu_to_le32(interval_tm - rem);
753
754         spin_unlock_irqrestore(&priv->lock, flags);
755         IWL_DEBUG_ASSOC(priv,
756                         "beacon interval %d beacon timer %d beacon tim %d\n",
757                         le16_to_cpu(priv->rxon_timing.beacon_interval),
758                         le32_to_cpu(priv->rxon_timing.beacon_init_val),
759                         le16_to_cpu(priv->rxon_timing.atim_window));
760 }
761 EXPORT_SYMBOL(iwl_setup_rxon_timing);
762
763 void iwl_set_rxon_hwcrypto(struct iwl_priv *priv, int hw_decrypt)
764 {
765         struct iwl_rxon_cmd *rxon = &priv->staging_rxon;
766
767         if (hw_decrypt)
768                 rxon->filter_flags &= ~RXON_FILTER_DIS_DECRYPT_MSK;
769         else
770                 rxon->filter_flags |= RXON_FILTER_DIS_DECRYPT_MSK;
771
772 }
773 EXPORT_SYMBOL(iwl_set_rxon_hwcrypto);
774
775 /**
776  * iwl_check_rxon_cmd - validate RXON structure is valid
777  *
778  * NOTE:  This is really only useful during development and can eventually
779  * be #ifdef'd out once the driver is stable and folks aren't actively
780  * making changes
781  */
782 int iwl_check_rxon_cmd(struct iwl_priv *priv)
783 {
784         int error = 0;
785         int counter = 1;
786         struct iwl_rxon_cmd *rxon = &priv->staging_rxon;
787
788         if (rxon->flags & RXON_FLG_BAND_24G_MSK) {
789                 error |= le32_to_cpu(rxon->flags &
790                                 (RXON_FLG_TGJ_NARROW_BAND_MSK |
791                                  RXON_FLG_RADAR_DETECT_MSK));
792                 if (error)
793                         IWL_WARN(priv, "check 24G fields %d | %d\n",
794                                     counter++, error);
795         } else {
796                 error |= (rxon->flags & RXON_FLG_SHORT_SLOT_MSK) ?
797                                 0 : le32_to_cpu(RXON_FLG_SHORT_SLOT_MSK);
798                 if (error)
799                         IWL_WARN(priv, "check 52 fields %d | %d\n",
800                                     counter++, error);
801                 error |= le32_to_cpu(rxon->flags & RXON_FLG_CCK_MSK);
802                 if (error)
803                         IWL_WARN(priv, "check 52 CCK %d | %d\n",
804                                     counter++, error);
805         }
806         error |= (rxon->node_addr[0] | rxon->bssid_addr[0]) & 0x1;
807         if (error)
808                 IWL_WARN(priv, "check mac addr %d | %d\n", counter++, error);
809
810         /* make sure basic rates 6Mbps and 1Mbps are supported */
811         error |= (((rxon->ofdm_basic_rates & IWL_RATE_6M_MASK) == 0) &&
812                   ((rxon->cck_basic_rates & IWL_RATE_1M_MASK) == 0));
813         if (error)
814                 IWL_WARN(priv, "check basic rate %d | %d\n", counter++, error);
815
816         error |= (le16_to_cpu(rxon->assoc_id) > 2007);
817         if (error)
818                 IWL_WARN(priv, "check assoc id %d | %d\n", counter++, error);
819
820         error |= ((rxon->flags & (RXON_FLG_CCK_MSK | RXON_FLG_SHORT_SLOT_MSK))
821                         == (RXON_FLG_CCK_MSK | RXON_FLG_SHORT_SLOT_MSK));
822         if (error)
823                 IWL_WARN(priv, "check CCK and short slot %d | %d\n",
824                             counter++, error);
825
826         error |= ((rxon->flags & (RXON_FLG_CCK_MSK | RXON_FLG_AUTO_DETECT_MSK))
827                         == (RXON_FLG_CCK_MSK | RXON_FLG_AUTO_DETECT_MSK));
828         if (error)
829                 IWL_WARN(priv, "check CCK & auto detect %d | %d\n",
830                             counter++, error);
831
832         error |= ((rxon->flags & (RXON_FLG_AUTO_DETECT_MSK |
833                         RXON_FLG_TGG_PROTECT_MSK)) == RXON_FLG_TGG_PROTECT_MSK);
834         if (error)
835                 IWL_WARN(priv, "check TGG and auto detect %d | %d\n",
836                             counter++, error);
837
838         if (error)
839                 IWL_WARN(priv, "Tuning to channel %d\n",
840                             le16_to_cpu(rxon->channel));
841
842         if (error) {
843                 IWL_ERR(priv, "Not a valid iwl_rxon_assoc_cmd field values\n");
844                 return -1;
845         }
846         return 0;
847 }
848 EXPORT_SYMBOL(iwl_check_rxon_cmd);
849
850 /**
851  * iwl_full_rxon_required - check if full RXON (vs RXON_ASSOC) cmd is needed
852  * @priv: staging_rxon is compared to active_rxon
853  *
854  * If the RXON structure is changing enough to require a new tune,
855  * or is clearing the RXON_FILTER_ASSOC_MSK, then return 1 to indicate that
856  * a new tune (full RXON command, rather than RXON_ASSOC cmd) is required.
857  */
858 int iwl_full_rxon_required(struct iwl_priv *priv)
859 {
860
861         /* These items are only settable from the full RXON command */
862         if (!(iwl_is_associated(priv)) ||
863             compare_ether_addr(priv->staging_rxon.bssid_addr,
864                                priv->active_rxon.bssid_addr) ||
865             compare_ether_addr(priv->staging_rxon.node_addr,
866                                priv->active_rxon.node_addr) ||
867             compare_ether_addr(priv->staging_rxon.wlap_bssid_addr,
868                                priv->active_rxon.wlap_bssid_addr) ||
869             (priv->staging_rxon.dev_type != priv->active_rxon.dev_type) ||
870             (priv->staging_rxon.channel != priv->active_rxon.channel) ||
871             (priv->staging_rxon.air_propagation !=
872              priv->active_rxon.air_propagation) ||
873             (priv->staging_rxon.ofdm_ht_single_stream_basic_rates !=
874              priv->active_rxon.ofdm_ht_single_stream_basic_rates) ||
875             (priv->staging_rxon.ofdm_ht_dual_stream_basic_rates !=
876              priv->active_rxon.ofdm_ht_dual_stream_basic_rates) ||
877             (priv->staging_rxon.ofdm_ht_triple_stream_basic_rates !=
878              priv->active_rxon.ofdm_ht_triple_stream_basic_rates) ||
879             (priv->staging_rxon.assoc_id != priv->active_rxon.assoc_id))
880                 return 1;
881
882         /* flags, filter_flags, ofdm_basic_rates, and cck_basic_rates can
883          * be updated with the RXON_ASSOC command -- however only some
884          * flag transitions are allowed using RXON_ASSOC */
885
886         /* Check if we are not switching bands */
887         if ((priv->staging_rxon.flags & RXON_FLG_BAND_24G_MSK) !=
888             (priv->active_rxon.flags & RXON_FLG_BAND_24G_MSK))
889                 return 1;
890
891         /* Check if we are switching association toggle */
892         if ((priv->staging_rxon.filter_flags & RXON_FILTER_ASSOC_MSK) !=
893                 (priv->active_rxon.filter_flags & RXON_FILTER_ASSOC_MSK))
894                 return 1;
895
896         return 0;
897 }
898 EXPORT_SYMBOL(iwl_full_rxon_required);
899
900 u8 iwl_rate_get_lowest_plcp(struct iwl_priv *priv)
901 {
902         int i;
903         int rate_mask;
904
905         /* Set rate mask*/
906         if (priv->staging_rxon.flags & RXON_FLG_BAND_24G_MSK)
907                 rate_mask = priv->active_rate_basic & IWL_CCK_RATES_MASK;
908         else
909                 rate_mask = priv->active_rate_basic & IWL_OFDM_RATES_MASK;
910
911         /* Find lowest valid rate */
912         for (i = IWL_RATE_1M_INDEX; i != IWL_RATE_INVALID;
913                                         i = iwl_rates[i].next_ieee) {
914                 if (rate_mask & (1 << i))
915                         return iwl_rates[i].plcp;
916         }
917
918         /* No valid rate was found. Assign the lowest one */
919         if (priv->staging_rxon.flags & RXON_FLG_BAND_24G_MSK)
920                 return IWL_RATE_1M_PLCP;
921         else
922                 return IWL_RATE_6M_PLCP;
923 }
924 EXPORT_SYMBOL(iwl_rate_get_lowest_plcp);
925
926 void iwl_set_rxon_ht(struct iwl_priv *priv, struct iwl_ht_config *ht_conf)
927 {
928         struct iwl_rxon_cmd *rxon = &priv->staging_rxon;
929
930         if (!ht_conf->is_ht) {
931                 rxon->flags &= ~(RXON_FLG_CHANNEL_MODE_MSK |
932                         RXON_FLG_CTRL_CHANNEL_LOC_HI_MSK |
933                         RXON_FLG_HT40_PROT_MSK |
934                         RXON_FLG_HT_PROT_MSK);
935                 return;
936         }
937
938         /* FIXME: if the definition of ht_protection changed, the "translation"
939          * will be needed for rxon->flags
940          */
941         rxon->flags |= cpu_to_le32(ht_conf->ht_protection << RXON_FLG_HT_OPERATING_MODE_POS);
942
943         /* Set up channel bandwidth:
944          * 20 MHz only, 20/40 mixed or pure 40 if ht40 ok */
945         /* clear the HT channel mode before set the mode */
946         rxon->flags &= ~(RXON_FLG_CHANNEL_MODE_MSK |
947                          RXON_FLG_CTRL_CHANNEL_LOC_HI_MSK);
948         if (iwl_is_ht40_tx_allowed(priv, NULL)) {
949                 /* pure ht40 */
950                 if (ht_conf->ht_protection == IEEE80211_HT_OP_MODE_PROTECTION_20MHZ) {
951                         rxon->flags |= RXON_FLG_CHANNEL_MODE_PURE_40;
952                         /* Note: control channel is opposite of extension channel */
953                         switch (ht_conf->extension_chan_offset) {
954                         case IEEE80211_HT_PARAM_CHA_SEC_ABOVE:
955                                 rxon->flags &= ~RXON_FLG_CTRL_CHANNEL_LOC_HI_MSK;
956                                 break;
957                         case IEEE80211_HT_PARAM_CHA_SEC_BELOW:
958                                 rxon->flags |= RXON_FLG_CTRL_CHANNEL_LOC_HI_MSK;
959                                 break;
960                         }
961                 } else {
962                         /* Note: control channel is opposite of extension channel */
963                         switch (ht_conf->extension_chan_offset) {
964                         case IEEE80211_HT_PARAM_CHA_SEC_ABOVE:
965                                 rxon->flags &= ~(RXON_FLG_CTRL_CHANNEL_LOC_HI_MSK);
966                                 rxon->flags |= RXON_FLG_CHANNEL_MODE_MIXED;
967                                 break;
968                         case IEEE80211_HT_PARAM_CHA_SEC_BELOW:
969                                 rxon->flags |= RXON_FLG_CTRL_CHANNEL_LOC_HI_MSK;
970                                 rxon->flags |= RXON_FLG_CHANNEL_MODE_MIXED;
971                                 break;
972                         case IEEE80211_HT_PARAM_CHA_SEC_NONE:
973                         default:
974                                 /* channel location only valid if in Mixed mode */
975                                 IWL_ERR(priv, "invalid extension channel offset\n");
976                                 break;
977                         }
978                 }
979         } else {
980                 rxon->flags |= RXON_FLG_CHANNEL_MODE_LEGACY;
981         }
982
983         if (priv->cfg->ops->hcmd->set_rxon_chain)
984                 priv->cfg->ops->hcmd->set_rxon_chain(priv);
985
986         IWL_DEBUG_ASSOC(priv, "rxon flags 0x%X operation mode :0x%X "
987                         "extension channel offset 0x%x\n",
988                         le32_to_cpu(rxon->flags), ht_conf->ht_protection,
989                         ht_conf->extension_chan_offset);
990         return;
991 }
992 EXPORT_SYMBOL(iwl_set_rxon_ht);
993
994 #define IWL_NUM_RX_CHAINS_MULTIPLE      3
995 #define IWL_NUM_RX_CHAINS_SINGLE        2
996 #define IWL_NUM_IDLE_CHAINS_DUAL        2
997 #define IWL_NUM_IDLE_CHAINS_SINGLE      1
998
999 /*
1000  * Determine how many receiver/antenna chains to use.
1001  *
1002  * More provides better reception via diversity.  Fewer saves power
1003  * at the expense of throughput, but only when not in powersave to
1004  * start with.
1005  *
1006  * MIMO (dual stream) requires at least 2, but works better with 3.
1007  * This does not determine *which* chains to use, just how many.
1008  */
1009 static int iwl_get_active_rx_chain_count(struct iwl_priv *priv)
1010 {
1011         /* # of Rx chains to use when expecting MIMO. */
1012         if (is_single_rx_stream(priv))
1013                 return IWL_NUM_RX_CHAINS_SINGLE;
1014         else
1015                 return IWL_NUM_RX_CHAINS_MULTIPLE;
1016 }
1017
1018 /*
1019  * When we are in power saving mode, unless device support spatial
1020  * multiplexing power save, use the active count for rx chain count.
1021  */
1022 static int iwl_get_idle_rx_chain_count(struct iwl_priv *priv, int active_cnt)
1023 {
1024         /* # Rx chains when idling, depending on SMPS mode */
1025         switch (priv->current_ht_config.smps) {
1026         case IEEE80211_SMPS_STATIC:
1027         case IEEE80211_SMPS_DYNAMIC:
1028                 return IWL_NUM_IDLE_CHAINS_SINGLE;
1029         case IEEE80211_SMPS_OFF:
1030                 return active_cnt;
1031         default:
1032                 WARN(1, "invalid SMPS mode %d",
1033                      priv->current_ht_config.smps);
1034                 return active_cnt;
1035         }
1036 }
1037
1038 /* up to 4 chains */
1039 static u8 iwl_count_chain_bitmap(u32 chain_bitmap)
1040 {
1041         u8 res;
1042         res = (chain_bitmap & BIT(0)) >> 0;
1043         res += (chain_bitmap & BIT(1)) >> 1;
1044         res += (chain_bitmap & BIT(2)) >> 2;
1045         res += (chain_bitmap & BIT(3)) >> 3;
1046         return res;
1047 }
1048
1049 /**
1050  * iwl_is_monitor_mode - Determine if interface in monitor mode
1051  *
1052  * priv->iw_mode is set in add_interface, but add_interface is
1053  * never called for monitor mode. The only way mac80211 informs us about
1054  * monitor mode is through configuring filters (call to configure_filter).
1055  */
1056 bool iwl_is_monitor_mode(struct iwl_priv *priv)
1057 {
1058         return !!(priv->staging_rxon.filter_flags & RXON_FILTER_PROMISC_MSK);
1059 }
1060 EXPORT_SYMBOL(iwl_is_monitor_mode);
1061
1062 /**
1063  * iwl_set_rxon_chain - Set up Rx chain usage in "staging" RXON image
1064  *
1065  * Selects how many and which Rx receivers/antennas/chains to use.
1066  * This should not be used for scan command ... it puts data in wrong place.
1067  */
1068 void iwl_set_rxon_chain(struct iwl_priv *priv)
1069 {
1070         bool is_single = is_single_rx_stream(priv);
1071         bool is_cam = !test_bit(STATUS_POWER_PMI, &priv->status);
1072         u8 idle_rx_cnt, active_rx_cnt, valid_rx_cnt;
1073         u32 active_chains;
1074         u16 rx_chain;
1075
1076         /* Tell uCode which antennas are actually connected.
1077          * Before first association, we assume all antennas are connected.
1078          * Just after first association, iwl_chain_noise_calibration()
1079          *    checks which antennas actually *are* connected. */
1080          if (priv->chain_noise_data.active_chains)
1081                 active_chains = priv->chain_noise_data.active_chains;
1082         else
1083                 active_chains = priv->hw_params.valid_rx_ant;
1084
1085         rx_chain = active_chains << RXON_RX_CHAIN_VALID_POS;
1086
1087         /* How many receivers should we use? */
1088         active_rx_cnt = iwl_get_active_rx_chain_count(priv);
1089         idle_rx_cnt = iwl_get_idle_rx_chain_count(priv, active_rx_cnt);
1090
1091
1092         /* correct rx chain count according hw settings
1093          * and chain noise calibration
1094          */
1095         valid_rx_cnt = iwl_count_chain_bitmap(active_chains);
1096         if (valid_rx_cnt < active_rx_cnt)
1097                 active_rx_cnt = valid_rx_cnt;
1098
1099         if (valid_rx_cnt < idle_rx_cnt)
1100                 idle_rx_cnt = valid_rx_cnt;
1101
1102         rx_chain |= active_rx_cnt << RXON_RX_CHAIN_MIMO_CNT_POS;
1103         rx_chain |= idle_rx_cnt  << RXON_RX_CHAIN_CNT_POS;
1104
1105         /* copied from 'iwl_bg_request_scan()' */
1106         /* Force use of chains B and C (0x6) for Rx for 4965
1107          * Avoid A (0x1) because of its off-channel reception on A-band.
1108          * MIMO is not used here, but value is required */
1109         if (iwl_is_monitor_mode(priv) &&
1110             !(priv->staging_rxon.flags & RXON_FLG_BAND_24G_MSK) &&
1111             ((priv->hw_rev & CSR_HW_REV_TYPE_MSK) == CSR_HW_REV_TYPE_4965)) {
1112                 rx_chain = ANT_ABC << RXON_RX_CHAIN_VALID_POS;
1113                 rx_chain |= ANT_BC << RXON_RX_CHAIN_FORCE_SEL_POS;
1114                 rx_chain |= ANT_ABC << RXON_RX_CHAIN_FORCE_MIMO_SEL_POS;
1115                 rx_chain |= 0x1 << RXON_RX_CHAIN_DRIVER_FORCE_POS;
1116         }
1117
1118         priv->staging_rxon.rx_chain = cpu_to_le16(rx_chain);
1119
1120         if (!is_single && (active_rx_cnt >= IWL_NUM_RX_CHAINS_SINGLE) && is_cam)
1121                 priv->staging_rxon.rx_chain |= RXON_RX_CHAIN_MIMO_FORCE_MSK;
1122         else
1123                 priv->staging_rxon.rx_chain &= ~RXON_RX_CHAIN_MIMO_FORCE_MSK;
1124
1125         IWL_DEBUG_ASSOC(priv, "rx_chain=0x%X active=%d idle=%d\n",
1126                         priv->staging_rxon.rx_chain,
1127                         active_rx_cnt, idle_rx_cnt);
1128
1129         WARN_ON(active_rx_cnt == 0 || idle_rx_cnt == 0 ||
1130                 active_rx_cnt < idle_rx_cnt);
1131 }
1132 EXPORT_SYMBOL(iwl_set_rxon_chain);
1133
1134 /**
1135  * iwl_set_rxon_channel - Set the phymode and channel values in staging RXON
1136  * @phymode: MODE_IEEE80211A sets to 5.2GHz; all else set to 2.4GHz
1137  * @channel: Any channel valid for the requested phymode
1138
1139  * In addition to setting the staging RXON, priv->phymode is also set.
1140  *
1141  * NOTE:  Does not commit to the hardware; it sets appropriate bit fields
1142  * in the staging RXON flag structure based on the phymode
1143  */
1144 int iwl_set_rxon_channel(struct iwl_priv *priv, struct ieee80211_channel *ch)
1145 {
1146         enum ieee80211_band band = ch->band;
1147         u16 channel = ieee80211_frequency_to_channel(ch->center_freq);
1148
1149         if (!iwl_get_channel_info(priv, band, channel)) {
1150                 IWL_DEBUG_INFO(priv, "Could not set channel to %d [%d]\n",
1151                                channel, band);
1152                 return -EINVAL;
1153         }
1154
1155         if ((le16_to_cpu(priv->staging_rxon.channel) == channel) &&
1156             (priv->band == band))
1157                 return 0;
1158
1159         priv->staging_rxon.channel = cpu_to_le16(channel);
1160         if (band == IEEE80211_BAND_5GHZ)
1161                 priv->staging_rxon.flags &= ~RXON_FLG_BAND_24G_MSK;
1162         else
1163                 priv->staging_rxon.flags |= RXON_FLG_BAND_24G_MSK;
1164
1165         priv->band = band;
1166
1167         IWL_DEBUG_INFO(priv, "Staging channel set to %d [%d]\n", channel, band);
1168
1169         return 0;
1170 }
1171 EXPORT_SYMBOL(iwl_set_rxon_channel);
1172
1173 void iwl_set_flags_for_band(struct iwl_priv *priv,
1174                             enum ieee80211_band band)
1175 {
1176         if (band == IEEE80211_BAND_5GHZ) {
1177                 priv->staging_rxon.flags &=
1178                     ~(RXON_FLG_BAND_24G_MSK | RXON_FLG_AUTO_DETECT_MSK
1179                       | RXON_FLG_CCK_MSK);
1180                 priv->staging_rxon.flags |= RXON_FLG_SHORT_SLOT_MSK;
1181         } else {
1182                 /* Copied from iwl_post_associate() */
1183                 if (priv->assoc_capability & WLAN_CAPABILITY_SHORT_SLOT_TIME)
1184                         priv->staging_rxon.flags |= RXON_FLG_SHORT_SLOT_MSK;
1185                 else
1186                         priv->staging_rxon.flags &= ~RXON_FLG_SHORT_SLOT_MSK;
1187
1188                 if (priv->iw_mode == NL80211_IFTYPE_ADHOC)
1189                         priv->staging_rxon.flags &= ~RXON_FLG_SHORT_SLOT_MSK;
1190
1191                 priv->staging_rxon.flags |= RXON_FLG_BAND_24G_MSK;
1192                 priv->staging_rxon.flags |= RXON_FLG_AUTO_DETECT_MSK;
1193                 priv->staging_rxon.flags &= ~RXON_FLG_CCK_MSK;
1194         }
1195 }
1196
1197 /*
1198  * initialize rxon structure with default values from eeprom
1199  */
1200 void iwl_connection_init_rx_config(struct iwl_priv *priv, int mode)
1201 {
1202         const struct iwl_channel_info *ch_info;
1203
1204         memset(&priv->staging_rxon, 0, sizeof(priv->staging_rxon));
1205
1206         switch (mode) {
1207         case NL80211_IFTYPE_AP:
1208                 priv->staging_rxon.dev_type = RXON_DEV_TYPE_AP;
1209                 break;
1210
1211         case NL80211_IFTYPE_STATION:
1212                 priv->staging_rxon.dev_type = RXON_DEV_TYPE_ESS;
1213                 priv->staging_rxon.filter_flags = RXON_FILTER_ACCEPT_GRP_MSK;
1214                 break;
1215
1216         case NL80211_IFTYPE_ADHOC:
1217                 priv->staging_rxon.dev_type = RXON_DEV_TYPE_IBSS;
1218                 priv->staging_rxon.flags = RXON_FLG_SHORT_PREAMBLE_MSK;
1219                 priv->staging_rxon.filter_flags = RXON_FILTER_BCON_AWARE_MSK |
1220                                                   RXON_FILTER_ACCEPT_GRP_MSK;
1221                 break;
1222
1223         default:
1224                 IWL_ERR(priv, "Unsupported interface type %d\n", mode);
1225                 break;
1226         }
1227
1228 #if 0
1229         /* TODO:  Figure out when short_preamble would be set and cache from
1230          * that */
1231         if (!hw_to_local(priv->hw)->short_preamble)
1232                 priv->staging_rxon.flags &= ~RXON_FLG_SHORT_PREAMBLE_MSK;
1233         else
1234                 priv->staging_rxon.flags |= RXON_FLG_SHORT_PREAMBLE_MSK;
1235 #endif
1236
1237         ch_info = iwl_get_channel_info(priv, priv->band,
1238                                        le16_to_cpu(priv->active_rxon.channel));
1239
1240         if (!ch_info)
1241                 ch_info = &priv->channel_info[0];
1242
1243         /*
1244          * in some case A channels are all non IBSS
1245          * in this case force B/G channel
1246          */
1247         if ((priv->iw_mode == NL80211_IFTYPE_ADHOC) &&
1248             !(is_channel_ibss(ch_info)))
1249                 ch_info = &priv->channel_info[0];
1250
1251         priv->staging_rxon.channel = cpu_to_le16(ch_info->channel);
1252         priv->band = ch_info->band;
1253
1254         iwl_set_flags_for_band(priv, priv->band);
1255
1256         priv->staging_rxon.ofdm_basic_rates =
1257             (IWL_OFDM_RATES_MASK >> IWL_FIRST_OFDM_RATE) & 0xFF;
1258         priv->staging_rxon.cck_basic_rates =
1259             (IWL_CCK_RATES_MASK >> IWL_FIRST_CCK_RATE) & 0xF;
1260
1261         /* clear both MIX and PURE40 mode flag */
1262         priv->staging_rxon.flags &= ~(RXON_FLG_CHANNEL_MODE_MIXED |
1263                                         RXON_FLG_CHANNEL_MODE_PURE_40);
1264         memcpy(priv->staging_rxon.node_addr, priv->mac_addr, ETH_ALEN);
1265         memcpy(priv->staging_rxon.wlap_bssid_addr, priv->mac_addr, ETH_ALEN);
1266         priv->staging_rxon.ofdm_ht_single_stream_basic_rates = 0xff;
1267         priv->staging_rxon.ofdm_ht_dual_stream_basic_rates = 0xff;
1268         priv->staging_rxon.ofdm_ht_triple_stream_basic_rates = 0xff;
1269 }
1270 EXPORT_SYMBOL(iwl_connection_init_rx_config);
1271
1272 static void iwl_set_rate(struct iwl_priv *priv)
1273 {
1274         const struct ieee80211_supported_band *hw = NULL;
1275         struct ieee80211_rate *rate;
1276         int i;
1277
1278         hw = iwl_get_hw_mode(priv, priv->band);
1279         if (!hw) {
1280                 IWL_ERR(priv, "Failed to set rate: unable to get hw mode\n");
1281                 return;
1282         }
1283
1284         priv->active_rate = 0;
1285         priv->active_rate_basic = 0;
1286
1287         for (i = 0; i < hw->n_bitrates; i++) {
1288                 rate = &(hw->bitrates[i]);
1289                 if (rate->hw_value < IWL_RATE_COUNT_LEGACY)
1290                         priv->active_rate |= (1 << rate->hw_value);
1291         }
1292
1293         IWL_DEBUG_RATE(priv, "Set active_rate = %0x, active_rate_basic = %0x\n",
1294                        priv->active_rate, priv->active_rate_basic);
1295
1296         /*
1297          * If a basic rate is configured, then use it (adding IWL_RATE_1M_MASK)
1298          * otherwise set it to the default of all CCK rates and 6, 12, 24 for
1299          * OFDM
1300          */
1301         if (priv->active_rate_basic & IWL_CCK_BASIC_RATES_MASK)
1302                 priv->staging_rxon.cck_basic_rates =
1303                     ((priv->active_rate_basic &
1304                       IWL_CCK_RATES_MASK) >> IWL_FIRST_CCK_RATE) & 0xF;
1305         else
1306                 priv->staging_rxon.cck_basic_rates =
1307                     (IWL_CCK_BASIC_RATES_MASK >> IWL_FIRST_CCK_RATE) & 0xF;
1308
1309         if (priv->active_rate_basic & IWL_OFDM_BASIC_RATES_MASK)
1310                 priv->staging_rxon.ofdm_basic_rates =
1311                     ((priv->active_rate_basic &
1312                       (IWL_OFDM_BASIC_RATES_MASK | IWL_RATE_6M_MASK)) >>
1313                       IWL_FIRST_OFDM_RATE) & 0xFF;
1314         else
1315                 priv->staging_rxon.ofdm_basic_rates =
1316                    (IWL_OFDM_BASIC_RATES_MASK >> IWL_FIRST_OFDM_RATE) & 0xFF;
1317 }
1318
1319 void iwl_rx_csa(struct iwl_priv *priv, struct iwl_rx_mem_buffer *rxb)
1320 {
1321         struct iwl_rx_packet *pkt = rxb_addr(rxb);
1322         struct iwl_rxon_cmd *rxon = (void *)&priv->active_rxon;
1323         struct iwl_csa_notification *csa = &(pkt->u.csa_notif);
1324
1325         if (priv->switch_rxon.switch_in_progress) {
1326                 if (!le32_to_cpu(csa->status) &&
1327                     (csa->channel == priv->switch_rxon.channel)) {
1328                         rxon->channel = csa->channel;
1329                         priv->staging_rxon.channel = csa->channel;
1330                         IWL_DEBUG_11H(priv, "CSA notif: channel %d\n",
1331                               le16_to_cpu(csa->channel));
1332                 } else
1333                         IWL_ERR(priv, "CSA notif (fail) : channel %d\n",
1334                               le16_to_cpu(csa->channel));
1335
1336                 priv->switch_rxon.switch_in_progress = false;
1337         }
1338 }
1339 EXPORT_SYMBOL(iwl_rx_csa);
1340
1341 #ifdef CONFIG_IWLWIFI_DEBUG
1342 void iwl_print_rx_config_cmd(struct iwl_priv *priv)
1343 {
1344         struct iwl_rxon_cmd *rxon = &priv->staging_rxon;
1345
1346         IWL_DEBUG_RADIO(priv, "RX CONFIG:\n");
1347         iwl_print_hex_dump(priv, IWL_DL_RADIO, (u8 *) rxon, sizeof(*rxon));
1348         IWL_DEBUG_RADIO(priv, "u16 channel: 0x%x\n", le16_to_cpu(rxon->channel));
1349         IWL_DEBUG_RADIO(priv, "u32 flags: 0x%08X\n", le32_to_cpu(rxon->flags));
1350         IWL_DEBUG_RADIO(priv, "u32 filter_flags: 0x%08x\n",
1351                         le32_to_cpu(rxon->filter_flags));
1352         IWL_DEBUG_RADIO(priv, "u8 dev_type: 0x%x\n", rxon->dev_type);
1353         IWL_DEBUG_RADIO(priv, "u8 ofdm_basic_rates: 0x%02x\n",
1354                         rxon->ofdm_basic_rates);
1355         IWL_DEBUG_RADIO(priv, "u8 cck_basic_rates: 0x%02x\n", rxon->cck_basic_rates);
1356         IWL_DEBUG_RADIO(priv, "u8[6] node_addr: %pM\n", rxon->node_addr);
1357         IWL_DEBUG_RADIO(priv, "u8[6] bssid_addr: %pM\n", rxon->bssid_addr);
1358         IWL_DEBUG_RADIO(priv, "u16 assoc_id: 0x%x\n", le16_to_cpu(rxon->assoc_id));
1359 }
1360 EXPORT_SYMBOL(iwl_print_rx_config_cmd);
1361 #endif
1362 /**
1363  * iwl_irq_handle_error - called for HW or SW error interrupt from card
1364  */
1365 void iwl_irq_handle_error(struct iwl_priv *priv)
1366 {
1367         /* Set the FW error flag -- cleared on iwl_down */
1368         set_bit(STATUS_FW_ERROR, &priv->status);
1369
1370         /* Cancel currently queued command. */
1371         clear_bit(STATUS_HCMD_ACTIVE, &priv->status);
1372
1373         priv->cfg->ops->lib->dump_nic_error_log(priv);
1374         if (priv->cfg->ops->lib->dump_csr)
1375                 priv->cfg->ops->lib->dump_csr(priv);
1376         if (priv->cfg->ops->lib->dump_fh)
1377                 priv->cfg->ops->lib->dump_fh(priv, NULL, false);
1378         priv->cfg->ops->lib->dump_nic_event_log(priv, false, NULL, false);
1379 #ifdef CONFIG_IWLWIFI_DEBUG
1380         if (iwl_get_debug_level(priv) & IWL_DL_FW_ERRORS)
1381                 iwl_print_rx_config_cmd(priv);
1382 #endif
1383
1384         wake_up_interruptible(&priv->wait_command_queue);
1385
1386         /* Keep the restart process from trying to send host
1387          * commands by clearing the INIT status bit */
1388         clear_bit(STATUS_READY, &priv->status);
1389
1390         if (!test_bit(STATUS_EXIT_PENDING, &priv->status)) {
1391                 IWL_DEBUG(priv, IWL_DL_FW_ERRORS,
1392                           "Restarting adapter due to uCode error.\n");
1393
1394                 if (priv->cfg->mod_params->restart_fw)
1395                         queue_work(priv->workqueue, &priv->restart);
1396         }
1397 }
1398 EXPORT_SYMBOL(iwl_irq_handle_error);
1399
1400 int iwl_apm_stop_master(struct iwl_priv *priv)
1401 {
1402         int ret = 0;
1403
1404         /* stop device's busmaster DMA activity */
1405         iwl_set_bit(priv, CSR_RESET, CSR_RESET_REG_FLAG_STOP_MASTER);
1406
1407         ret = iwl_poll_bit(priv, CSR_RESET, CSR_RESET_REG_FLAG_MASTER_DISABLED,
1408                         CSR_RESET_REG_FLAG_MASTER_DISABLED, 100);
1409         if (ret)
1410                 IWL_WARN(priv, "Master Disable Timed Out, 100 usec\n");
1411
1412         IWL_DEBUG_INFO(priv, "stop master\n");
1413
1414         return ret;
1415 }
1416 EXPORT_SYMBOL(iwl_apm_stop_master);
1417
1418 void iwl_apm_stop(struct iwl_priv *priv)
1419 {
1420         IWL_DEBUG_INFO(priv, "Stop card, put in low power state\n");
1421
1422         /* Stop device's DMA activity */
1423         iwl_apm_stop_master(priv);
1424
1425         /* Reset the entire device */
1426         iwl_set_bit(priv, CSR_RESET, CSR_RESET_REG_FLAG_SW_RESET);
1427
1428         udelay(10);
1429
1430         /*
1431          * Clear "initialization complete" bit to move adapter from
1432          * D0A* (powered-up Active) --> D0U* (Uninitialized) state.
1433          */
1434         iwl_clear_bit(priv, CSR_GP_CNTRL, CSR_GP_CNTRL_REG_FLAG_INIT_DONE);
1435 }
1436 EXPORT_SYMBOL(iwl_apm_stop);
1437
1438
1439 /*
1440  * Start up NIC's basic functionality after it has been reset
1441  * (e.g. after platform boot, or shutdown via iwl_apm_stop())
1442  * NOTE:  This does not load uCode nor start the embedded processor
1443  */
1444 int iwl_apm_init(struct iwl_priv *priv)
1445 {
1446         int ret = 0;
1447         u16 lctl;
1448
1449         IWL_DEBUG_INFO(priv, "Init card's basic functions\n");
1450
1451         /*
1452          * Use "set_bit" below rather than "write", to preserve any hardware
1453          * bits already set by default after reset.
1454          */
1455
1456         /* Disable L0S exit timer (platform NMI Work/Around) */
1457         iwl_set_bit(priv, CSR_GIO_CHICKEN_BITS,
1458                           CSR_GIO_CHICKEN_BITS_REG_BIT_DIS_L0S_EXIT_TIMER);
1459
1460         /*
1461          * Disable L0s without affecting L1;
1462          *  don't wait for ICH L0s (ICH bug W/A)
1463          */
1464         iwl_set_bit(priv, CSR_GIO_CHICKEN_BITS,
1465                           CSR_GIO_CHICKEN_BITS_REG_BIT_L1A_NO_L0S_RX);
1466
1467         /* Set FH wait threshold to maximum (HW error during stress W/A) */
1468         iwl_set_bit(priv, CSR_DBG_HPET_MEM_REG, CSR_DBG_HPET_MEM_REG_VAL);
1469
1470         /*
1471          * Enable HAP INTA (interrupt from management bus) to
1472          * wake device's PCI Express link L1a -> L0s
1473          * NOTE:  This is no-op for 3945 (non-existant bit)
1474          */
1475         iwl_set_bit(priv, CSR_HW_IF_CONFIG_REG,
1476                                     CSR_HW_IF_CONFIG_REG_BIT_HAP_WAKE_L1A);
1477
1478         /*
1479          * HW bug W/A for instability in PCIe bus L0->L0S->L1 transition.
1480          * Check if BIOS (or OS) enabled L1-ASPM on this device.
1481          * If so (likely), disable L0S, so device moves directly L0->L1;
1482          *    costs negligible amount of power savings.
1483          * If not (unlikely), enable L0S, so there is at least some
1484          *    power savings, even without L1.
1485          */
1486         if (priv->cfg->set_l0s) {
1487                 lctl = iwl_pcie_link_ctl(priv);
1488                 if ((lctl & PCI_CFG_LINK_CTRL_VAL_L1_EN) ==
1489                                         PCI_CFG_LINK_CTRL_VAL_L1_EN) {
1490                         /* L1-ASPM enabled; disable(!) L0S  */
1491                         iwl_set_bit(priv, CSR_GIO_REG,
1492                                         CSR_GIO_REG_VAL_L0S_ENABLED);
1493                         IWL_DEBUG_POWER(priv, "L1 Enabled; Disabling L0S\n");
1494                 } else {
1495                         /* L1-ASPM disabled; enable(!) L0S */
1496                         iwl_clear_bit(priv, CSR_GIO_REG,
1497                                         CSR_GIO_REG_VAL_L0S_ENABLED);
1498                         IWL_DEBUG_POWER(priv, "L1 Disabled; Enabling L0S\n");
1499                 }
1500         }
1501
1502         /* Configure analog phase-lock-loop before activating to D0A */
1503         if (priv->cfg->pll_cfg_val)
1504                 iwl_set_bit(priv, CSR_ANA_PLL_CFG, priv->cfg->pll_cfg_val);
1505
1506         /*
1507          * Set "initialization complete" bit to move adapter from
1508          * D0U* --> D0A* (powered-up active) state.
1509          */
1510         iwl_set_bit(priv, CSR_GP_CNTRL, CSR_GP_CNTRL_REG_FLAG_INIT_DONE);
1511
1512         /*
1513          * Wait for clock stabilization; once stabilized, access to
1514          * device-internal resources is supported, e.g. iwl_write_prph()
1515          * and accesses to uCode SRAM.
1516          */
1517         ret = iwl_poll_bit(priv, CSR_GP_CNTRL,
1518                         CSR_GP_CNTRL_REG_FLAG_MAC_CLOCK_READY,
1519                         CSR_GP_CNTRL_REG_FLAG_MAC_CLOCK_READY, 25000);
1520         if (ret < 0) {
1521                 IWL_DEBUG_INFO(priv, "Failed to init the card\n");
1522                 goto out;
1523         }
1524
1525         /*
1526          * Enable DMA and BSM (if used) clocks, wait for them to stabilize.
1527          * BSM (Boostrap State Machine) is only in 3945 and 4965;
1528          * later devices (i.e. 5000 and later) have non-volatile SRAM,
1529          * and don't need BSM to restore data after power-saving sleep.
1530          *
1531          * Write to "CLK_EN_REG"; "1" bits enable clocks, while "0" bits
1532          * do not disable clocks.  This preserves any hardware bits already
1533          * set by default in "CLK_CTRL_REG" after reset.
1534          */
1535         if (priv->cfg->use_bsm)
1536                 iwl_write_prph(priv, APMG_CLK_EN_REG,
1537                         APMG_CLK_VAL_DMA_CLK_RQT | APMG_CLK_VAL_BSM_CLK_RQT);
1538         else
1539                 iwl_write_prph(priv, APMG_CLK_EN_REG,
1540                         APMG_CLK_VAL_DMA_CLK_RQT);
1541         udelay(20);
1542
1543         /* Disable L1-Active */
1544         iwl_set_bits_prph(priv, APMG_PCIDEV_STT_REG,
1545                           APMG_PCIDEV_STT_VAL_L1_ACT_DIS);
1546
1547 out:
1548         return ret;
1549 }
1550 EXPORT_SYMBOL(iwl_apm_init);
1551
1552
1553
1554 void iwl_configure_filter(struct ieee80211_hw *hw,
1555                           unsigned int changed_flags,
1556                           unsigned int *total_flags,
1557                           u64 multicast)
1558 {
1559         struct iwl_priv *priv = hw->priv;
1560         __le32 *filter_flags = &priv->staging_rxon.filter_flags;
1561
1562         IWL_DEBUG_MAC80211(priv, "Enter: changed: 0x%x, total: 0x%x\n",
1563                         changed_flags, *total_flags);
1564
1565         if (changed_flags & (FIF_OTHER_BSS | FIF_PROMISC_IN_BSS)) {
1566                 if (*total_flags & (FIF_OTHER_BSS | FIF_PROMISC_IN_BSS))
1567                         *filter_flags |= RXON_FILTER_PROMISC_MSK;
1568                 else
1569                         *filter_flags &= ~RXON_FILTER_PROMISC_MSK;
1570         }
1571         if (changed_flags & FIF_ALLMULTI) {
1572                 if (*total_flags & FIF_ALLMULTI)
1573                         *filter_flags |= RXON_FILTER_ACCEPT_GRP_MSK;
1574                 else
1575                         *filter_flags &= ~RXON_FILTER_ACCEPT_GRP_MSK;
1576         }
1577         if (changed_flags & FIF_CONTROL) {
1578                 if (*total_flags & FIF_CONTROL)
1579                         *filter_flags |= RXON_FILTER_CTL2HOST_MSK;
1580                 else
1581                         *filter_flags &= ~RXON_FILTER_CTL2HOST_MSK;
1582         }
1583         if (changed_flags & FIF_BCN_PRBRESP_PROMISC) {
1584                 if (*total_flags & FIF_BCN_PRBRESP_PROMISC)
1585                         *filter_flags |= RXON_FILTER_BCON_AWARE_MSK;
1586                 else
1587                         *filter_flags &= ~RXON_FILTER_BCON_AWARE_MSK;
1588         }
1589
1590         /* We avoid iwl_commit_rxon here to commit the new filter flags
1591          * since mac80211 will call ieee80211_hw_config immediately.
1592          * (mc_list is not supported at this time). Otherwise, we need to
1593          * queue a background iwl_commit_rxon work.
1594          */
1595
1596         *total_flags &= FIF_OTHER_BSS | FIF_ALLMULTI | FIF_PROMISC_IN_BSS |
1597                         FIF_BCN_PRBRESP_PROMISC | FIF_CONTROL;
1598 }
1599 EXPORT_SYMBOL(iwl_configure_filter);
1600
1601 int iwl_set_hw_params(struct iwl_priv *priv)
1602 {
1603         priv->hw_params.max_rxq_size = RX_QUEUE_SIZE;
1604         priv->hw_params.max_rxq_log = RX_QUEUE_SIZE_LOG;
1605         if (priv->cfg->mod_params->amsdu_size_8K)
1606                 priv->hw_params.rx_page_order = get_order(IWL_RX_BUF_SIZE_8K);
1607         else
1608                 priv->hw_params.rx_page_order = get_order(IWL_RX_BUF_SIZE_4K);
1609
1610         priv->hw_params.max_beacon_itrvl = IWL_MAX_UCODE_BEACON_INTERVAL;
1611
1612         if (priv->cfg->mod_params->disable_11n)
1613                 priv->cfg->sku &= ~IWL_SKU_N;
1614
1615         /* Device-specific setup */
1616         return priv->cfg->ops->lib->set_hw_params(priv);
1617 }
1618 EXPORT_SYMBOL(iwl_set_hw_params);
1619
1620 int iwl_set_tx_power(struct iwl_priv *priv, s8 tx_power, bool force)
1621 {
1622         int ret = 0;
1623         s8 prev_tx_power = priv->tx_power_user_lmt;
1624
1625         if (tx_power < IWL_TX_POWER_TARGET_POWER_MIN) {
1626                 IWL_WARN(priv, "Requested user TXPOWER %d below lower limit %d.\n",
1627                          tx_power,
1628                          IWL_TX_POWER_TARGET_POWER_MIN);
1629                 return -EINVAL;
1630         }
1631
1632         if (tx_power > priv->tx_power_device_lmt) {
1633                 IWL_WARN(priv,
1634                         "Requested user TXPOWER %d above upper limit %d.\n",
1635                          tx_power, priv->tx_power_device_lmt);
1636                 return -EINVAL;
1637         }
1638
1639         if (priv->tx_power_user_lmt != tx_power)
1640                 force = true;
1641
1642         /* if nic is not up don't send command */
1643         if (iwl_is_ready_rf(priv)) {
1644                 priv->tx_power_user_lmt = tx_power;
1645                 if (force && priv->cfg->ops->lib->send_tx_power)
1646                         ret = priv->cfg->ops->lib->send_tx_power(priv);
1647                 else if (!priv->cfg->ops->lib->send_tx_power)
1648                         ret = -EOPNOTSUPP;
1649                 /*
1650                  * if fail to set tx_power, restore the orig. tx power
1651                  */
1652                 if (ret)
1653                         priv->tx_power_user_lmt = prev_tx_power;
1654         }
1655
1656         /*
1657          * Even this is an async host command, the command
1658          * will always report success from uCode
1659          * So once driver can placing the command into the queue
1660          * successfully, driver can use priv->tx_power_user_lmt
1661          * to reflect the current tx power
1662          */
1663         return ret;
1664 }
1665 EXPORT_SYMBOL(iwl_set_tx_power);
1666
1667 #define ICT_COUNT (PAGE_SIZE/sizeof(u32))
1668
1669 /* Free dram table */
1670 void iwl_free_isr_ict(struct iwl_priv *priv)
1671 {
1672         if (priv->ict_tbl_vir) {
1673                 dma_free_coherent(&priv->pci_dev->dev,
1674                                   (sizeof(u32) * ICT_COUNT) + PAGE_SIZE,
1675                                   priv->ict_tbl_vir, priv->ict_tbl_dma);
1676                 priv->ict_tbl_vir = NULL;
1677         }
1678 }
1679 EXPORT_SYMBOL(iwl_free_isr_ict);
1680
1681
1682 /* allocate dram shared table it is a PAGE_SIZE aligned
1683  * also reset all data related to ICT table interrupt.
1684  */
1685 int iwl_alloc_isr_ict(struct iwl_priv *priv)
1686 {
1687
1688         if (priv->cfg->use_isr_legacy)
1689                 return 0;
1690         /* allocate shrared data table */
1691         priv->ict_tbl_vir = dma_alloc_coherent(&priv->pci_dev->dev,
1692                                         (sizeof(u32) * ICT_COUNT) + PAGE_SIZE,
1693                                         &priv->ict_tbl_dma, GFP_KERNEL);
1694         if (!priv->ict_tbl_vir)
1695                 return -ENOMEM;
1696
1697         /* align table to PAGE_SIZE boundry */
1698         priv->aligned_ict_tbl_dma = ALIGN(priv->ict_tbl_dma, PAGE_SIZE);
1699
1700         IWL_DEBUG_ISR(priv, "ict dma addr %Lx dma aligned %Lx diff %d\n",
1701                              (unsigned long long)priv->ict_tbl_dma,
1702                              (unsigned long long)priv->aligned_ict_tbl_dma,
1703                         (int)(priv->aligned_ict_tbl_dma - priv->ict_tbl_dma));
1704
1705         priv->ict_tbl =  priv->ict_tbl_vir +
1706                           (priv->aligned_ict_tbl_dma - priv->ict_tbl_dma);
1707
1708         IWL_DEBUG_ISR(priv, "ict vir addr %p vir aligned %p diff %d\n",
1709                              priv->ict_tbl, priv->ict_tbl_vir,
1710                         (int)(priv->aligned_ict_tbl_dma - priv->ict_tbl_dma));
1711
1712         /* reset table and index to all 0 */
1713         memset(priv->ict_tbl_vir,0, (sizeof(u32) * ICT_COUNT) + PAGE_SIZE);
1714         priv->ict_index = 0;
1715
1716         /* add periodic RX interrupt */
1717         priv->inta_mask |= CSR_INT_BIT_RX_PERIODIC;
1718         return 0;
1719 }
1720 EXPORT_SYMBOL(iwl_alloc_isr_ict);
1721
1722 /* Device is going up inform it about using ICT interrupt table,
1723  * also we need to tell the driver to start using ICT interrupt.
1724  */
1725 int iwl_reset_ict(struct iwl_priv *priv)
1726 {
1727         u32 val;
1728         unsigned long flags;
1729
1730         if (!priv->ict_tbl_vir)
1731                 return 0;
1732
1733         spin_lock_irqsave(&priv->lock, flags);
1734         iwl_disable_interrupts(priv);
1735
1736         memset(&priv->ict_tbl[0], 0, sizeof(u32) * ICT_COUNT);
1737
1738         val = priv->aligned_ict_tbl_dma >> PAGE_SHIFT;
1739
1740         val |= CSR_DRAM_INT_TBL_ENABLE;
1741         val |= CSR_DRAM_INIT_TBL_WRAP_CHECK;
1742
1743         IWL_DEBUG_ISR(priv, "CSR_DRAM_INT_TBL_REG =0x%X "
1744                         "aligned dma address %Lx\n",
1745                         val, (unsigned long long)priv->aligned_ict_tbl_dma);
1746
1747         iwl_write32(priv, CSR_DRAM_INT_TBL_REG, val);
1748         priv->use_ict = true;
1749         priv->ict_index = 0;
1750         iwl_write32(priv, CSR_INT, priv->inta_mask);
1751         iwl_enable_interrupts(priv);
1752         spin_unlock_irqrestore(&priv->lock, flags);
1753
1754         return 0;
1755 }
1756 EXPORT_SYMBOL(iwl_reset_ict);
1757
1758 /* Device is going down disable ict interrupt usage */
1759 void iwl_disable_ict(struct iwl_priv *priv)
1760 {
1761         unsigned long flags;
1762
1763         spin_lock_irqsave(&priv->lock, flags);
1764         priv->use_ict = false;
1765         spin_unlock_irqrestore(&priv->lock, flags);
1766 }
1767 EXPORT_SYMBOL(iwl_disable_ict);
1768
1769 /* interrupt handler using ict table, with this interrupt driver will
1770  * stop using INTA register to get device's interrupt, reading this register
1771  * is expensive, device will write interrupts in ICT dram table, increment
1772  * index then will fire interrupt to driver, driver will OR all ICT table
1773  * entries from current index up to table entry with 0 value. the result is
1774  * the interrupt we need to service, driver will set the entries back to 0 and
1775  * set index.
1776  */
1777 irqreturn_t iwl_isr_ict(int irq, void *data)
1778 {
1779         struct iwl_priv *priv = data;
1780         u32 inta, inta_mask;
1781         u32 val = 0;
1782
1783         if (!priv)
1784                 return IRQ_NONE;
1785
1786         /* dram interrupt table not set yet,
1787          * use legacy interrupt.
1788          */
1789         if (!priv->use_ict)
1790                 return iwl_isr(irq, data);
1791
1792         spin_lock(&priv->lock);
1793
1794         /* Disable (but don't clear!) interrupts here to avoid
1795          * back-to-back ISRs and sporadic interrupts from our NIC.
1796          * If we have something to service, the tasklet will re-enable ints.
1797          * If we *don't* have something, we'll re-enable before leaving here.
1798          */
1799         inta_mask = iwl_read32(priv, CSR_INT_MASK);  /* just for debug */
1800         iwl_write32(priv, CSR_INT_MASK, 0x00000000);
1801
1802
1803         /* Ignore interrupt if there's nothing in NIC to service.
1804          * This may be due to IRQ shared with another device,
1805          * or due to sporadic interrupts thrown from our NIC. */
1806         if (!priv->ict_tbl[priv->ict_index]) {
1807                 IWL_DEBUG_ISR(priv, "Ignore interrupt, inta == 0\n");
1808                 goto none;
1809         }
1810
1811         /* read all entries that not 0 start with ict_index */
1812         while (priv->ict_tbl[priv->ict_index]) {
1813
1814                 val |= le32_to_cpu(priv->ict_tbl[priv->ict_index]);
1815                 IWL_DEBUG_ISR(priv, "ICT index %d value 0x%08X\n",
1816                                 priv->ict_index,
1817                                 le32_to_cpu(priv->ict_tbl[priv->ict_index]));
1818                 priv->ict_tbl[priv->ict_index] = 0;
1819                 priv->ict_index = iwl_queue_inc_wrap(priv->ict_index,
1820                                                      ICT_COUNT);
1821
1822         }
1823
1824         /* We should not get this value, just ignore it. */
1825         if (val == 0xffffffff)
1826                 val = 0;
1827
1828         /*
1829          * this is a w/a for a h/w bug. the h/w bug may cause the Rx bit
1830          * (bit 15 before shifting it to 31) to clear when using interrupt
1831          * coalescing. fortunately, bits 18 and 19 stay set when this happens
1832          * so we use them to decide on the real state of the Rx bit.
1833          * In order words, bit 15 is set if bit 18 or bit 19 are set.
1834          */
1835         if (val & 0xC0000)
1836                 val |= 0x8000;
1837
1838         inta = (0xff & val) | ((0xff00 & val) << 16);
1839         IWL_DEBUG_ISR(priv, "ISR inta 0x%08x, enabled 0x%08x ict 0x%08x\n",
1840                         inta, inta_mask, val);
1841
1842         inta &= priv->inta_mask;
1843         priv->inta |= inta;
1844
1845         /* iwl_irq_tasklet() will service interrupts and re-enable them */
1846         if (likely(inta))
1847                 tasklet_schedule(&priv->irq_tasklet);
1848         else if (test_bit(STATUS_INT_ENABLED, &priv->status) && !priv->inta) {
1849                 /* Allow interrupt if was disabled by this handler and
1850                  * no tasklet was schedules, We should not enable interrupt,
1851                  * tasklet will enable it.
1852                  */
1853                 iwl_enable_interrupts(priv);
1854         }
1855
1856         spin_unlock(&priv->lock);
1857         return IRQ_HANDLED;
1858
1859  none:
1860         /* re-enable interrupts here since we don't have anything to service.
1861          * only Re-enable if disabled by irq.
1862          */
1863         if (test_bit(STATUS_INT_ENABLED, &priv->status) && !priv->inta)
1864                 iwl_enable_interrupts(priv);
1865
1866         spin_unlock(&priv->lock);
1867         return IRQ_NONE;
1868 }
1869 EXPORT_SYMBOL(iwl_isr_ict);
1870
1871
1872 static irqreturn_t iwl_isr(int irq, void *data)
1873 {
1874         struct iwl_priv *priv = data;
1875         u32 inta, inta_mask;
1876 #ifdef CONFIG_IWLWIFI_DEBUG
1877         u32 inta_fh;
1878 #endif
1879         if (!priv)
1880                 return IRQ_NONE;
1881
1882         spin_lock(&priv->lock);
1883
1884         /* Disable (but don't clear!) interrupts here to avoid
1885          *    back-to-back ISRs and sporadic interrupts from our NIC.
1886          * If we have something to service, the tasklet will re-enable ints.
1887          * If we *don't* have something, we'll re-enable before leaving here. */
1888         inta_mask = iwl_read32(priv, CSR_INT_MASK);  /* just for debug */
1889         iwl_write32(priv, CSR_INT_MASK, 0x00000000);
1890
1891         /* Discover which interrupts are active/pending */
1892         inta = iwl_read32(priv, CSR_INT);
1893
1894         /* Ignore interrupt if there's nothing in NIC to service.
1895          * This may be due to IRQ shared with another device,
1896          * or due to sporadic interrupts thrown from our NIC. */
1897         if (!inta) {
1898                 IWL_DEBUG_ISR(priv, "Ignore interrupt, inta == 0\n");
1899                 goto none;
1900         }
1901
1902         if ((inta == 0xFFFFFFFF) || ((inta & 0xFFFFFFF0) == 0xa5a5a5a0)) {
1903                 /* Hardware disappeared. It might have already raised
1904                  * an interrupt */
1905                 IWL_WARN(priv, "HARDWARE GONE?? INTA == 0x%08x\n", inta);
1906                 goto unplugged;
1907         }
1908
1909 #ifdef CONFIG_IWLWIFI_DEBUG
1910         if (iwl_get_debug_level(priv) & (IWL_DL_ISR)) {
1911                 inta_fh = iwl_read32(priv, CSR_FH_INT_STATUS);
1912                 IWL_DEBUG_ISR(priv, "ISR inta 0x%08x, enabled 0x%08x, "
1913                               "fh 0x%08x\n", inta, inta_mask, inta_fh);
1914         }
1915 #endif
1916
1917         priv->inta |= inta;
1918         /* iwl_irq_tasklet() will service interrupts and re-enable them */
1919         if (likely(inta))
1920                 tasklet_schedule(&priv->irq_tasklet);
1921         else if (test_bit(STATUS_INT_ENABLED, &priv->status) && !priv->inta)
1922                 iwl_enable_interrupts(priv);
1923
1924  unplugged:
1925         spin_unlock(&priv->lock);
1926         return IRQ_HANDLED;
1927
1928  none:
1929         /* re-enable interrupts here since we don't have anything to service. */
1930         /* only Re-enable if diabled by irq  and no schedules tasklet. */
1931         if (test_bit(STATUS_INT_ENABLED, &priv->status) && !priv->inta)
1932                 iwl_enable_interrupts(priv);
1933
1934         spin_unlock(&priv->lock);
1935         return IRQ_NONE;
1936 }
1937
1938 irqreturn_t iwl_isr_legacy(int irq, void *data)
1939 {
1940         struct iwl_priv *priv = data;
1941         u32 inta, inta_mask;
1942         u32 inta_fh;
1943         if (!priv)
1944                 return IRQ_NONE;
1945
1946         spin_lock(&priv->lock);
1947
1948         /* Disable (but don't clear!) interrupts here to avoid
1949          *    back-to-back ISRs and sporadic interrupts from our NIC.
1950          * If we have something to service, the tasklet will re-enable ints.
1951          * If we *don't* have something, we'll re-enable before leaving here. */
1952         inta_mask = iwl_read32(priv, CSR_INT_MASK);  /* just for debug */
1953         iwl_write32(priv, CSR_INT_MASK, 0x00000000);
1954
1955         /* Discover which interrupts are active/pending */
1956         inta = iwl_read32(priv, CSR_INT);
1957         inta_fh = iwl_read32(priv, CSR_FH_INT_STATUS);
1958
1959         /* Ignore interrupt if there's nothing in NIC to service.
1960          * This may be due to IRQ shared with another device,
1961          * or due to sporadic interrupts thrown from our NIC. */
1962         if (!inta && !inta_fh) {
1963                 IWL_DEBUG_ISR(priv, "Ignore interrupt, inta == 0, inta_fh == 0\n");
1964                 goto none;
1965         }
1966
1967         if ((inta == 0xFFFFFFFF) || ((inta & 0xFFFFFFF0) == 0xa5a5a5a0)) {
1968                 /* Hardware disappeared. It might have already raised
1969                  * an interrupt */
1970                 IWL_WARN(priv, "HARDWARE GONE?? INTA == 0x%08x\n", inta);
1971                 goto unplugged;
1972         }
1973
1974         IWL_DEBUG_ISR(priv, "ISR inta 0x%08x, enabled 0x%08x, fh 0x%08x\n",
1975                       inta, inta_mask, inta_fh);
1976
1977         inta &= ~CSR_INT_BIT_SCD;
1978
1979         /* iwl_irq_tasklet() will service interrupts and re-enable them */
1980         if (likely(inta || inta_fh))
1981                 tasklet_schedule(&priv->irq_tasklet);
1982
1983  unplugged:
1984         spin_unlock(&priv->lock);
1985         return IRQ_HANDLED;
1986
1987  none:
1988         /* re-enable interrupts here since we don't have anything to service. */
1989         /* only Re-enable if diabled by irq */
1990         if (test_bit(STATUS_INT_ENABLED, &priv->status))
1991                 iwl_enable_interrupts(priv);
1992         spin_unlock(&priv->lock);
1993         return IRQ_NONE;
1994 }
1995 EXPORT_SYMBOL(iwl_isr_legacy);
1996
1997 int iwl_send_bt_config(struct iwl_priv *priv)
1998 {
1999         struct iwl_bt_cmd bt_cmd = {
2000                 .lead_time = BT_LEAD_TIME_DEF,
2001                 .max_kill = BT_MAX_KILL_DEF,
2002                 .kill_ack_mask = 0,
2003                 .kill_cts_mask = 0,
2004         };
2005
2006         if (!bt_coex_active)
2007                 bt_cmd.flags = BT_COEX_DISABLE;
2008         else
2009                 bt_cmd.flags = BT_COEX_ENABLE;
2010
2011         IWL_DEBUG_INFO(priv, "BT coex %s\n",
2012                 (bt_cmd.flags == BT_COEX_DISABLE) ? "disable" : "active");
2013
2014         return iwl_send_cmd_pdu(priv, REPLY_BT_CONFIG,
2015                                 sizeof(struct iwl_bt_cmd), &bt_cmd);
2016 }
2017 EXPORT_SYMBOL(iwl_send_bt_config);
2018
2019 int iwl_send_statistics_request(struct iwl_priv *priv, u8 flags, bool clear)
2020 {
2021         struct iwl_statistics_cmd statistics_cmd = {
2022                 .configuration_flags =
2023                         clear ? IWL_STATS_CONF_CLEAR_STATS : 0,
2024         };
2025
2026         if (flags & CMD_ASYNC)
2027                 return iwl_send_cmd_pdu_async(priv, REPLY_STATISTICS_CMD,
2028                                                sizeof(struct iwl_statistics_cmd),
2029                                                &statistics_cmd, NULL);
2030         else
2031                 return iwl_send_cmd_pdu(priv, REPLY_STATISTICS_CMD,
2032                                         sizeof(struct iwl_statistics_cmd),
2033                                         &statistics_cmd);
2034 }
2035 EXPORT_SYMBOL(iwl_send_statistics_request);
2036
2037 /**
2038  * iwl_verify_inst_sparse - verify runtime uCode image in card vs. host,
2039  *   using sample data 100 bytes apart.  If these sample points are good,
2040  *   it's a pretty good bet that everything between them is good, too.
2041  */
2042 static int iwlcore_verify_inst_sparse(struct iwl_priv *priv, __le32 *image, u32 len)
2043 {
2044         u32 val;
2045         int ret = 0;
2046         u32 errcnt = 0;
2047         u32 i;
2048
2049         IWL_DEBUG_INFO(priv, "ucode inst image size is %u\n", len);
2050
2051         for (i = 0; i < len; i += 100, image += 100/sizeof(u32)) {
2052                 /* read data comes through single port, auto-incr addr */
2053                 /* NOTE: Use the debugless read so we don't flood kernel log
2054                  * if IWL_DL_IO is set */
2055                 iwl_write_direct32(priv, HBUS_TARG_MEM_RADDR,
2056                         i + IWL49_RTC_INST_LOWER_BOUND);
2057                 val = _iwl_read_direct32(priv, HBUS_TARG_MEM_RDAT);
2058                 if (val != le32_to_cpu(*image)) {
2059                         ret = -EIO;
2060                         errcnt++;
2061                         if (errcnt >= 3)
2062                                 break;
2063                 }
2064         }
2065
2066         return ret;
2067 }
2068
2069 /**
2070  * iwlcore_verify_inst_full - verify runtime uCode image in card vs. host,
2071  *     looking at all data.
2072  */
2073 static int iwl_verify_inst_full(struct iwl_priv *priv, __le32 *image,
2074                                  u32 len)
2075 {
2076         u32 val;
2077         u32 save_len = len;
2078         int ret = 0;
2079         u32 errcnt;
2080
2081         IWL_DEBUG_INFO(priv, "ucode inst image size is %u\n", len);
2082
2083         iwl_write_direct32(priv, HBUS_TARG_MEM_RADDR,
2084                            IWL49_RTC_INST_LOWER_BOUND);
2085
2086         errcnt = 0;
2087         for (; len > 0; len -= sizeof(u32), image++) {
2088                 /* read data comes through single port, auto-incr addr */
2089                 /* NOTE: Use the debugless read so we don't flood kernel log
2090                  * if IWL_DL_IO is set */
2091                 val = _iwl_read_direct32(priv, HBUS_TARG_MEM_RDAT);
2092                 if (val != le32_to_cpu(*image)) {
2093                         IWL_ERR(priv, "uCode INST section is invalid at "
2094                                   "offset 0x%x, is 0x%x, s/b 0x%x\n",
2095                                   save_len - len, val, le32_to_cpu(*image));
2096                         ret = -EIO;
2097                         errcnt++;
2098                         if (errcnt >= 20)
2099                                 break;
2100                 }
2101         }
2102
2103         if (!errcnt)
2104                 IWL_DEBUG_INFO(priv,
2105                     "ucode image in INSTRUCTION memory is good\n");
2106
2107         return ret;
2108 }
2109
2110 /**
2111  * iwl_verify_ucode - determine which instruction image is in SRAM,
2112  *    and verify its contents
2113  */
2114 int iwl_verify_ucode(struct iwl_priv *priv)
2115 {
2116         __le32 *image;
2117         u32 len;
2118         int ret;
2119
2120         /* Try bootstrap */
2121         image = (__le32 *)priv->ucode_boot.v_addr;
2122         len = priv->ucode_boot.len;
2123         ret = iwlcore_verify_inst_sparse(priv, image, len);
2124         if (!ret) {
2125                 IWL_DEBUG_INFO(priv, "Bootstrap uCode is good in inst SRAM\n");
2126                 return 0;
2127         }
2128
2129         /* Try initialize */
2130         image = (__le32 *)priv->ucode_init.v_addr;
2131         len = priv->ucode_init.len;
2132         ret = iwlcore_verify_inst_sparse(priv, image, len);
2133         if (!ret) {
2134                 IWL_DEBUG_INFO(priv, "Initialize uCode is good in inst SRAM\n");
2135                 return 0;
2136         }
2137
2138         /* Try runtime/protocol */
2139         image = (__le32 *)priv->ucode_code.v_addr;
2140         len = priv->ucode_code.len;
2141         ret = iwlcore_verify_inst_sparse(priv, image, len);
2142         if (!ret) {
2143                 IWL_DEBUG_INFO(priv, "Runtime uCode is good in inst SRAM\n");
2144                 return 0;
2145         }
2146
2147         IWL_ERR(priv, "NO VALID UCODE IMAGE IN INSTRUCTION SRAM!!\n");
2148
2149         /* Since nothing seems to match, show first several data entries in
2150          * instruction SRAM, so maybe visual inspection will give a clue.
2151          * Selection of bootstrap image (vs. other images) is arbitrary. */
2152         image = (__le32 *)priv->ucode_boot.v_addr;
2153         len = priv->ucode_boot.len;
2154         ret = iwl_verify_inst_full(priv, image, len);
2155
2156         return ret;
2157 }
2158 EXPORT_SYMBOL(iwl_verify_ucode);
2159
2160
2161 void iwl_rf_kill_ct_config(struct iwl_priv *priv)
2162 {
2163         struct iwl_ct_kill_config cmd;
2164         struct iwl_ct_kill_throttling_config adv_cmd;
2165         unsigned long flags;
2166         int ret = 0;
2167
2168         spin_lock_irqsave(&priv->lock, flags);
2169         iwl_write32(priv, CSR_UCODE_DRV_GP1_CLR,
2170                     CSR_UCODE_DRV_GP1_REG_BIT_CT_KILL_EXIT);
2171         spin_unlock_irqrestore(&priv->lock, flags);
2172         priv->thermal_throttle.ct_kill_toggle = false;
2173
2174         if (priv->cfg->support_ct_kill_exit) {
2175                 adv_cmd.critical_temperature_enter =
2176                         cpu_to_le32(priv->hw_params.ct_kill_threshold);
2177                 adv_cmd.critical_temperature_exit =
2178                         cpu_to_le32(priv->hw_params.ct_kill_exit_threshold);
2179
2180                 ret = iwl_send_cmd_pdu(priv, REPLY_CT_KILL_CONFIG_CMD,
2181                                        sizeof(adv_cmd), &adv_cmd);
2182                 if (ret)
2183                         IWL_ERR(priv, "REPLY_CT_KILL_CONFIG_CMD failed\n");
2184                 else
2185                         IWL_DEBUG_INFO(priv, "REPLY_CT_KILL_CONFIG_CMD "
2186                                         "succeeded, "
2187                                         "critical temperature enter is %d,"
2188                                         "exit is %d\n",
2189                                        priv->hw_params.ct_kill_threshold,
2190                                        priv->hw_params.ct_kill_exit_threshold);
2191         } else {
2192                 cmd.critical_temperature_R =
2193                         cpu_to_le32(priv->hw_params.ct_kill_threshold);
2194
2195                 ret = iwl_send_cmd_pdu(priv, REPLY_CT_KILL_CONFIG_CMD,
2196                                        sizeof(cmd), &cmd);
2197                 if (ret)
2198                         IWL_ERR(priv, "REPLY_CT_KILL_CONFIG_CMD failed\n");
2199                 else
2200                         IWL_DEBUG_INFO(priv, "REPLY_CT_KILL_CONFIG_CMD "
2201                                         "succeeded, "
2202                                         "critical temperature is %d\n",
2203                                         priv->hw_params.ct_kill_threshold);
2204         }
2205 }
2206 EXPORT_SYMBOL(iwl_rf_kill_ct_config);
2207
2208
2209 /*
2210  * CARD_STATE_CMD
2211  *
2212  * Use: Sets the device's internal card state to enable, disable, or halt
2213  *
2214  * When in the 'enable' state the card operates as normal.
2215  * When in the 'disable' state, the card enters into a low power mode.
2216  * When in the 'halt' state, the card is shut down and must be fully
2217  * restarted to come back on.
2218  */
2219 int iwl_send_card_state(struct iwl_priv *priv, u32 flags, u8 meta_flag)
2220 {
2221         struct iwl_host_cmd cmd = {
2222                 .id = REPLY_CARD_STATE_CMD,
2223                 .len = sizeof(u32),
2224                 .data = &flags,
2225                 .flags = meta_flag,
2226         };
2227
2228         return iwl_send_cmd(priv, &cmd);
2229 }
2230
2231 void iwl_rx_pm_sleep_notif(struct iwl_priv *priv,
2232                            struct iwl_rx_mem_buffer *rxb)
2233 {
2234 #ifdef CONFIG_IWLWIFI_DEBUG
2235         struct iwl_rx_packet *pkt = rxb_addr(rxb);
2236         struct iwl_sleep_notification *sleep = &(pkt->u.sleep_notif);
2237         IWL_DEBUG_RX(priv, "sleep mode: %d, src: %d\n",
2238                      sleep->pm_sleep_mode, sleep->pm_wakeup_src);
2239 #endif
2240 }
2241 EXPORT_SYMBOL(iwl_rx_pm_sleep_notif);
2242
2243 void iwl_rx_pm_debug_statistics_notif(struct iwl_priv *priv,
2244                                       struct iwl_rx_mem_buffer *rxb)
2245 {
2246         struct iwl_rx_packet *pkt = rxb_addr(rxb);
2247         u32 len = le32_to_cpu(pkt->len_n_flags) & FH_RSCSR_FRAME_SIZE_MSK;
2248         IWL_DEBUG_RADIO(priv, "Dumping %d bytes of unhandled "
2249                         "notification for %s:\n", len,
2250                         get_cmd_string(pkt->hdr.cmd));
2251         iwl_print_hex_dump(priv, IWL_DL_RADIO, pkt->u.raw, len);
2252 }
2253 EXPORT_SYMBOL(iwl_rx_pm_debug_statistics_notif);
2254
2255 void iwl_rx_reply_error(struct iwl_priv *priv,
2256                         struct iwl_rx_mem_buffer *rxb)
2257 {
2258         struct iwl_rx_packet *pkt = rxb_addr(rxb);
2259
2260         IWL_ERR(priv, "Error Reply type 0x%08X cmd %s (0x%02X) "
2261                 "seq 0x%04X ser 0x%08X\n",
2262                 le32_to_cpu(pkt->u.err_resp.error_type),
2263                 get_cmd_string(pkt->u.err_resp.cmd_id),
2264                 pkt->u.err_resp.cmd_id,
2265                 le16_to_cpu(pkt->u.err_resp.bad_cmd_seq_num),
2266                 le32_to_cpu(pkt->u.err_resp.error_info));
2267 }
2268 EXPORT_SYMBOL(iwl_rx_reply_error);
2269
2270 void iwl_clear_isr_stats(struct iwl_priv *priv)
2271 {
2272         memset(&priv->isr_stats, 0, sizeof(priv->isr_stats));
2273 }
2274
2275 int iwl_mac_conf_tx(struct ieee80211_hw *hw, u16 queue,
2276                            const struct ieee80211_tx_queue_params *params)
2277 {
2278         struct iwl_priv *priv = hw->priv;
2279         unsigned long flags;
2280         int q;
2281
2282         IWL_DEBUG_MAC80211(priv, "enter\n");
2283
2284         if (!iwl_is_ready_rf(priv)) {
2285                 IWL_DEBUG_MAC80211(priv, "leave - RF not ready\n");
2286                 return -EIO;
2287         }
2288
2289         if (queue >= AC_NUM) {
2290                 IWL_DEBUG_MAC80211(priv, "leave - queue >= AC_NUM %d\n", queue);
2291                 return 0;
2292         }
2293
2294         q = AC_NUM - 1 - queue;
2295
2296         spin_lock_irqsave(&priv->lock, flags);
2297
2298         priv->qos_data.def_qos_parm.ac[q].cw_min = cpu_to_le16(params->cw_min);
2299         priv->qos_data.def_qos_parm.ac[q].cw_max = cpu_to_le16(params->cw_max);
2300         priv->qos_data.def_qos_parm.ac[q].aifsn = params->aifs;
2301         priv->qos_data.def_qos_parm.ac[q].edca_txop =
2302                         cpu_to_le16((params->txop * 32));
2303
2304         priv->qos_data.def_qos_parm.ac[q].reserved1 = 0;
2305         priv->qos_data.qos_active = 1;
2306
2307         if (priv->iw_mode == NL80211_IFTYPE_AP)
2308                 iwl_activate_qos(priv, 1);
2309         else if (priv->assoc_id && iwl_is_associated(priv))
2310                 iwl_activate_qos(priv, 0);
2311
2312         spin_unlock_irqrestore(&priv->lock, flags);
2313
2314         IWL_DEBUG_MAC80211(priv, "leave\n");
2315         return 0;
2316 }
2317 EXPORT_SYMBOL(iwl_mac_conf_tx);
2318
2319 static void iwl_ht_conf(struct iwl_priv *priv,
2320                         struct ieee80211_bss_conf *bss_conf)
2321 {
2322         struct iwl_ht_config *ht_conf = &priv->current_ht_config;
2323         struct ieee80211_sta *sta;
2324
2325         IWL_DEBUG_MAC80211(priv, "enter: \n");
2326
2327         if (!ht_conf->is_ht)
2328                 return;
2329
2330         ht_conf->ht_protection =
2331                 bss_conf->ht_operation_mode & IEEE80211_HT_OP_MODE_PROTECTION;
2332         ht_conf->non_GF_STA_present =
2333                 !!(bss_conf->ht_operation_mode & IEEE80211_HT_OP_MODE_NON_GF_STA_PRSNT);
2334
2335         ht_conf->single_chain_sufficient = false;
2336
2337         switch (priv->iw_mode) {
2338         case NL80211_IFTYPE_STATION:
2339                 rcu_read_lock();
2340                 sta = ieee80211_find_sta(priv->vif, priv->bssid);
2341                 if (sta) {
2342                         struct ieee80211_sta_ht_cap *ht_cap = &sta->ht_cap;
2343                         int maxstreams;
2344
2345                         maxstreams = (ht_cap->mcs.tx_params &
2346                                       IEEE80211_HT_MCS_TX_MAX_STREAMS_MASK)
2347                                         >> IEEE80211_HT_MCS_TX_MAX_STREAMS_SHIFT;
2348                         maxstreams += 1;
2349
2350                         if ((ht_cap->mcs.rx_mask[1] == 0) &&
2351                             (ht_cap->mcs.rx_mask[2] == 0))
2352                                 ht_conf->single_chain_sufficient = true;
2353                         if (maxstreams <= 1)
2354                                 ht_conf->single_chain_sufficient = true;
2355                 } else {
2356                         /*
2357                          * If at all, this can only happen through a race
2358                          * when the AP disconnects us while we're still
2359                          * setting up the connection, in that case mac80211
2360                          * will soon tell us about that.
2361                          */
2362                         ht_conf->single_chain_sufficient = true;
2363                 }
2364                 rcu_read_unlock();
2365                 break;
2366         case NL80211_IFTYPE_ADHOC:
2367                 ht_conf->single_chain_sufficient = true;
2368                 break;
2369         default:
2370                 break;
2371         }
2372
2373         IWL_DEBUG_MAC80211(priv, "leave\n");
2374 }
2375
2376 static inline void iwl_set_no_assoc(struct iwl_priv *priv)
2377 {
2378         priv->assoc_id = 0;
2379         iwl_led_disassociate(priv);
2380         /*
2381          * inform the ucode that there is no longer an
2382          * association and that no more packets should be
2383          * sent
2384          */
2385         priv->staging_rxon.filter_flags &=
2386                 ~RXON_FILTER_ASSOC_MSK;
2387         priv->staging_rxon.assoc_id = 0;
2388         iwlcore_commit_rxon(priv);
2389 }
2390
2391 #define IWL_DELAY_NEXT_SCAN_AFTER_ASSOC (HZ*6)
2392 void iwl_bss_info_changed(struct ieee80211_hw *hw,
2393                           struct ieee80211_vif *vif,
2394                           struct ieee80211_bss_conf *bss_conf,
2395                           u32 changes)
2396 {
2397         struct iwl_priv *priv = hw->priv;
2398         int ret;
2399
2400         IWL_DEBUG_MAC80211(priv, "changes = 0x%X\n", changes);
2401
2402         if (!iwl_is_alive(priv))
2403                 return;
2404
2405         mutex_lock(&priv->mutex);
2406
2407         if (changes & BSS_CHANGED_BEACON &&
2408             priv->iw_mode == NL80211_IFTYPE_AP) {
2409                 dev_kfree_skb(priv->ibss_beacon);
2410                 priv->ibss_beacon = ieee80211_beacon_get(hw, vif);
2411         }
2412
2413         if (changes & BSS_CHANGED_BEACON_INT) {
2414                 priv->beacon_int = bss_conf->beacon_int;
2415                 /* TODO: in AP mode, do something to make this take effect */
2416         }
2417
2418         if (changes & BSS_CHANGED_BSSID) {
2419                 IWL_DEBUG_MAC80211(priv, "BSSID %pM\n", bss_conf->bssid);
2420
2421                 /*
2422                  * If there is currently a HW scan going on in the
2423                  * background then we need to cancel it else the RXON
2424                  * below/in post_associate will fail.
2425                  */
2426                 if (iwl_scan_cancel_timeout(priv, 100)) {
2427                         IWL_WARN(priv, "Aborted scan still in progress after 100ms\n");
2428                         IWL_DEBUG_MAC80211(priv, "leaving - scan abort failed.\n");
2429                         mutex_unlock(&priv->mutex);
2430                         return;
2431                 }
2432
2433                 /* mac80211 only sets assoc when in STATION mode */
2434                 if (priv->iw_mode == NL80211_IFTYPE_ADHOC ||
2435                     bss_conf->assoc) {
2436                         memcpy(priv->staging_rxon.bssid_addr,
2437                                bss_conf->bssid, ETH_ALEN);
2438
2439                         /* currently needed in a few places */
2440                         memcpy(priv->bssid, bss_conf->bssid, ETH_ALEN);
2441                 } else {
2442                         priv->staging_rxon.filter_flags &=
2443                                 ~RXON_FILTER_ASSOC_MSK;
2444                 }
2445
2446         }
2447
2448         /*
2449          * This needs to be after setting the BSSID in case
2450          * mac80211 decides to do both changes at once because
2451          * it will invoke post_associate.
2452          */
2453         if (priv->iw_mode == NL80211_IFTYPE_ADHOC &&
2454             changes & BSS_CHANGED_BEACON) {
2455                 struct sk_buff *beacon = ieee80211_beacon_get(hw, vif);
2456
2457                 if (beacon)
2458                         iwl_mac_beacon_update(hw, beacon);
2459         }
2460
2461         if (changes & BSS_CHANGED_ERP_PREAMBLE) {
2462                 IWL_DEBUG_MAC80211(priv, "ERP_PREAMBLE %d\n",
2463                                    bss_conf->use_short_preamble);
2464                 if (bss_conf->use_short_preamble)
2465                         priv->staging_rxon.flags |= RXON_FLG_SHORT_PREAMBLE_MSK;
2466                 else
2467                         priv->staging_rxon.flags &= ~RXON_FLG_SHORT_PREAMBLE_MSK;
2468         }
2469
2470         if (changes & BSS_CHANGED_ERP_CTS_PROT) {
2471                 IWL_DEBUG_MAC80211(priv, "ERP_CTS %d\n", bss_conf->use_cts_prot);
2472                 if (bss_conf->use_cts_prot && (priv->band != IEEE80211_BAND_5GHZ))
2473                         priv->staging_rxon.flags |= RXON_FLG_TGG_PROTECT_MSK;
2474                 else
2475                         priv->staging_rxon.flags &= ~RXON_FLG_TGG_PROTECT_MSK;
2476         }
2477
2478         if (changes & BSS_CHANGED_BASIC_RATES) {
2479                 /* XXX use this information
2480                  *
2481                  * To do that, remove code from iwl_set_rate() and put something
2482                  * like this here:
2483                  *
2484                 if (A-band)
2485                         priv->staging_rxon.ofdm_basic_rates =
2486                                 bss_conf->basic_rates;
2487                 else
2488                         priv->staging_rxon.ofdm_basic_rates =
2489                                 bss_conf->basic_rates >> 4;
2490                         priv->staging_rxon.cck_basic_rates =
2491                                 bss_conf->basic_rates & 0xF;
2492                  */
2493         }
2494
2495         if (changes & BSS_CHANGED_HT) {
2496                 iwl_ht_conf(priv, bss_conf);
2497
2498                 if (priv->cfg->ops->hcmd->set_rxon_chain)
2499                         priv->cfg->ops->hcmd->set_rxon_chain(priv);
2500         }
2501
2502         if (changes & BSS_CHANGED_ASSOC) {
2503                 IWL_DEBUG_MAC80211(priv, "ASSOC %d\n", bss_conf->assoc);
2504                 if (bss_conf->assoc) {
2505                         priv->assoc_id = bss_conf->aid;
2506                         priv->beacon_int = bss_conf->beacon_int;
2507                         priv->timestamp = bss_conf->timestamp;
2508                         priv->assoc_capability = bss_conf->assoc_capability;
2509
2510                         iwl_led_associate(priv);
2511
2512                         /*
2513                          * We have just associated, don't start scan too early
2514                          * leave time for EAPOL exchange to complete.
2515                          *
2516                          * XXX: do this in mac80211
2517                          */
2518                         priv->next_scan_jiffies = jiffies +
2519                                         IWL_DELAY_NEXT_SCAN_AFTER_ASSOC;
2520                         if (!iwl_is_rfkill(priv))
2521                                 priv->cfg->ops->lib->post_associate(priv);
2522                 } else
2523                         iwl_set_no_assoc(priv);
2524         }
2525
2526         if (changes && iwl_is_associated(priv) && priv->assoc_id) {
2527                 IWL_DEBUG_MAC80211(priv, "Changes (%#x) while associated\n",
2528                                    changes);
2529                 ret = iwl_send_rxon_assoc(priv);
2530                 if (!ret) {
2531                         /* Sync active_rxon with latest change. */
2532                         memcpy((void *)&priv->active_rxon,
2533                                 &priv->staging_rxon,
2534                                 sizeof(struct iwl_rxon_cmd));
2535                 }
2536         }
2537
2538         if (changes & BSS_CHANGED_BEACON_ENABLED) {
2539                 if (vif->bss_conf.enable_beacon) {
2540                         memcpy(priv->staging_rxon.bssid_addr,
2541                                bss_conf->bssid, ETH_ALEN);
2542                         memcpy(priv->bssid, bss_conf->bssid, ETH_ALEN);
2543                         iwlcore_config_ap(priv);
2544                 } else
2545                         iwl_set_no_assoc(priv);
2546         }
2547
2548         mutex_unlock(&priv->mutex);
2549
2550         IWL_DEBUG_MAC80211(priv, "leave\n");
2551 }
2552 EXPORT_SYMBOL(iwl_bss_info_changed);
2553
2554 int iwl_mac_beacon_update(struct ieee80211_hw *hw, struct sk_buff *skb)
2555 {
2556         struct iwl_priv *priv = hw->priv;
2557         unsigned long flags;
2558         __le64 timestamp;
2559
2560         IWL_DEBUG_MAC80211(priv, "enter\n");
2561
2562         if (!iwl_is_ready_rf(priv)) {
2563                 IWL_DEBUG_MAC80211(priv, "leave - RF not ready\n");
2564                 return -EIO;
2565         }
2566
2567         if (priv->iw_mode != NL80211_IFTYPE_ADHOC) {
2568                 IWL_DEBUG_MAC80211(priv, "leave - not IBSS\n");
2569                 return -EIO;
2570         }
2571
2572         spin_lock_irqsave(&priv->lock, flags);
2573
2574         if (priv->ibss_beacon)
2575                 dev_kfree_skb(priv->ibss_beacon);
2576
2577         priv->ibss_beacon = skb;
2578
2579         priv->assoc_id = 0;
2580         timestamp = ((struct ieee80211_mgmt *)skb->data)->u.beacon.timestamp;
2581         priv->timestamp = le64_to_cpu(timestamp);
2582
2583         IWL_DEBUG_MAC80211(priv, "leave\n");
2584         spin_unlock_irqrestore(&priv->lock, flags);
2585
2586         iwl_reset_qos(priv);
2587
2588         priv->cfg->ops->lib->post_associate(priv);
2589
2590
2591         return 0;
2592 }
2593 EXPORT_SYMBOL(iwl_mac_beacon_update);
2594
2595 int iwl_set_mode(struct iwl_priv *priv, int mode)
2596 {
2597         if (mode == NL80211_IFTYPE_ADHOC) {
2598                 const struct iwl_channel_info *ch_info;
2599
2600                 ch_info = iwl_get_channel_info(priv,
2601                         priv->band,
2602                         le16_to_cpu(priv->staging_rxon.channel));
2603
2604                 if (!ch_info || !is_channel_ibss(ch_info)) {
2605                         IWL_ERR(priv, "channel %d not IBSS channel\n",
2606                                   le16_to_cpu(priv->staging_rxon.channel));
2607                         return -EINVAL;
2608                 }
2609         }
2610
2611         iwl_connection_init_rx_config(priv, mode);
2612
2613         if (priv->cfg->ops->hcmd->set_rxon_chain)
2614                 priv->cfg->ops->hcmd->set_rxon_chain(priv);
2615
2616         memcpy(priv->staging_rxon.node_addr, priv->mac_addr, ETH_ALEN);
2617
2618         iwl_clear_stations_table(priv);
2619
2620         /* dont commit rxon if rf-kill is on*/
2621         if (!iwl_is_ready_rf(priv))
2622                 return -EAGAIN;
2623
2624         iwlcore_commit_rxon(priv);
2625
2626         return 0;
2627 }
2628 EXPORT_SYMBOL(iwl_set_mode);
2629
2630 int iwl_mac_add_interface(struct ieee80211_hw *hw,
2631                                  struct ieee80211_vif *vif)
2632 {
2633         struct iwl_priv *priv = hw->priv;
2634         int err = 0;
2635
2636         IWL_DEBUG_MAC80211(priv, "enter: type %d\n", vif->type);
2637
2638         mutex_lock(&priv->mutex);
2639
2640         if (priv->vif) {
2641                 IWL_DEBUG_MAC80211(priv, "leave - vif != NULL\n");
2642                 err = -EOPNOTSUPP;
2643                 goto out;
2644         }
2645
2646         priv->vif = vif;
2647         priv->iw_mode = vif->type;
2648
2649         if (vif->addr) {
2650                 IWL_DEBUG_MAC80211(priv, "Set %pM\n", vif->addr);
2651                 memcpy(priv->mac_addr, vif->addr, ETH_ALEN);
2652         }
2653
2654         if (iwl_set_mode(priv, vif->type) == -EAGAIN)
2655                 /* we are not ready, will run again when ready */
2656                 set_bit(STATUS_MODE_PENDING, &priv->status);
2657
2658  out:
2659         mutex_unlock(&priv->mutex);
2660
2661         IWL_DEBUG_MAC80211(priv, "leave\n");
2662         return err;
2663 }
2664 EXPORT_SYMBOL(iwl_mac_add_interface);
2665
2666 void iwl_mac_remove_interface(struct ieee80211_hw *hw,
2667                                      struct ieee80211_vif *vif)
2668 {
2669         struct iwl_priv *priv = hw->priv;
2670
2671         IWL_DEBUG_MAC80211(priv, "enter\n");
2672
2673         mutex_lock(&priv->mutex);
2674
2675         if (iwl_is_ready_rf(priv)) {
2676                 iwl_scan_cancel_timeout(priv, 100);
2677                 priv->staging_rxon.filter_flags &= ~RXON_FILTER_ASSOC_MSK;
2678                 iwlcore_commit_rxon(priv);
2679         }
2680         if (priv->vif == vif) {
2681                 priv->vif = NULL;
2682                 memset(priv->bssid, 0, ETH_ALEN);
2683         }
2684         mutex_unlock(&priv->mutex);
2685
2686         IWL_DEBUG_MAC80211(priv, "leave\n");
2687
2688 }
2689 EXPORT_SYMBOL(iwl_mac_remove_interface);
2690
2691 /**
2692  * iwl_mac_config - mac80211 config callback
2693  *
2694  * We ignore conf->flags & IEEE80211_CONF_SHORT_SLOT_TIME since it seems to
2695  * be set inappropriately and the driver currently sets the hardware up to
2696  * use it whenever needed.
2697  */
2698 int iwl_mac_config(struct ieee80211_hw *hw, u32 changed)
2699 {
2700         struct iwl_priv *priv = hw->priv;
2701         const struct iwl_channel_info *ch_info;
2702         struct ieee80211_conf *conf = &hw->conf;
2703         struct iwl_ht_config *ht_conf = &priv->current_ht_config;
2704         unsigned long flags = 0;
2705         int ret = 0;
2706         u16 ch;
2707         int scan_active = 0;
2708
2709         mutex_lock(&priv->mutex);
2710
2711         IWL_DEBUG_MAC80211(priv, "enter to channel %d changed 0x%X\n",
2712                                         conf->channel->hw_value, changed);
2713
2714         if (unlikely(!priv->cfg->mod_params->disable_hw_scan &&
2715                         test_bit(STATUS_SCANNING, &priv->status))) {
2716                 scan_active = 1;
2717                 IWL_DEBUG_MAC80211(priv, "leave - scanning\n");
2718         }
2719
2720         if (changed & (IEEE80211_CONF_CHANGE_SMPS |
2721                        IEEE80211_CONF_CHANGE_CHANNEL)) {
2722                 /* mac80211 uses static for non-HT which is what we want */
2723                 priv->current_ht_config.smps = conf->smps_mode;
2724
2725                 /*
2726                  * Recalculate chain counts.
2727                  *
2728                  * If monitor mode is enabled then mac80211 will
2729                  * set up the SM PS mode to OFF if an HT channel is
2730                  * configured.
2731                  */
2732                 if (priv->cfg->ops->hcmd->set_rxon_chain)
2733                         priv->cfg->ops->hcmd->set_rxon_chain(priv);
2734         }
2735
2736         /* during scanning mac80211 will delay channel setting until
2737          * scan finish with changed = 0
2738          */
2739         if (!changed || (changed & IEEE80211_CONF_CHANGE_CHANNEL)) {
2740                 if (scan_active)
2741                         goto set_ch_out;
2742
2743                 ch = ieee80211_frequency_to_channel(conf->channel->center_freq);
2744                 ch_info = iwl_get_channel_info(priv, conf->channel->band, ch);
2745                 if (!is_channel_valid(ch_info)) {
2746                         IWL_DEBUG_MAC80211(priv, "leave - invalid channel\n");
2747                         ret = -EINVAL;
2748                         goto set_ch_out;
2749                 }
2750
2751                 if (priv->iw_mode == NL80211_IFTYPE_ADHOC &&
2752                         !is_channel_ibss(ch_info)) {
2753                         IWL_ERR(priv, "channel %d in band %d not "
2754                                 "IBSS channel\n",
2755                                 conf->channel->hw_value, conf->channel->band);
2756                         ret = -EINVAL;
2757                         goto set_ch_out;
2758                 }
2759
2760                 spin_lock_irqsave(&priv->lock, flags);
2761
2762                 /* Configure HT40 channels */
2763                 ht_conf->is_ht = conf_is_ht(conf);
2764                 if (ht_conf->is_ht) {
2765                         if (conf_is_ht40_minus(conf)) {
2766                                 ht_conf->extension_chan_offset =
2767                                         IEEE80211_HT_PARAM_CHA_SEC_BELOW;
2768                                 ht_conf->is_40mhz = true;
2769                         } else if (conf_is_ht40_plus(conf)) {
2770                                 ht_conf->extension_chan_offset =
2771                                         IEEE80211_HT_PARAM_CHA_SEC_ABOVE;
2772                                 ht_conf->is_40mhz = true;
2773                         } else {
2774                                 ht_conf->extension_chan_offset =
2775                                         IEEE80211_HT_PARAM_CHA_SEC_NONE;
2776                                 ht_conf->is_40mhz = false;
2777                         }
2778                 } else
2779                         ht_conf->is_40mhz = false;
2780                 /* Default to no protection. Protection mode will later be set
2781                  * from BSS config in iwl_ht_conf */
2782                 ht_conf->ht_protection = IEEE80211_HT_OP_MODE_PROTECTION_NONE;
2783
2784                 /* if we are switching from ht to 2.4 clear flags
2785                  * from any ht related info since 2.4 does not
2786                  * support ht */
2787                 if ((le16_to_cpu(priv->staging_rxon.channel) != ch))
2788                         priv->staging_rxon.flags = 0;
2789
2790                 iwl_set_rxon_channel(priv, conf->channel);
2791                 iwl_set_rxon_ht(priv, ht_conf);
2792
2793                 iwl_set_flags_for_band(priv, conf->channel->band);
2794                 spin_unlock_irqrestore(&priv->lock, flags);
2795                 if (iwl_is_associated(priv) &&
2796                     (le16_to_cpu(priv->active_rxon.channel) != ch) &&
2797                     priv->cfg->ops->lib->set_channel_switch) {
2798                         iwl_set_rate(priv);
2799                         /*
2800                          * at this point, staging_rxon has the
2801                          * configuration for channel switch
2802                          */
2803                         ret = priv->cfg->ops->lib->set_channel_switch(priv,
2804                                 ch);
2805                         if (!ret) {
2806                                 iwl_print_rx_config_cmd(priv);
2807                                 goto out;
2808                         }
2809                         priv->switch_rxon.switch_in_progress = false;
2810                 }
2811  set_ch_out:
2812                 /* The list of supported rates and rate mask can be different
2813                  * for each band; since the band may have changed, reset
2814                  * the rate mask to what mac80211 lists */
2815                 iwl_set_rate(priv);
2816         }
2817
2818         if (changed & (IEEE80211_CONF_CHANGE_PS |
2819                         IEEE80211_CONF_CHANGE_IDLE)) {
2820                 ret = iwl_power_update_mode(priv, false);
2821                 if (ret)
2822                         IWL_DEBUG_MAC80211(priv, "Error setting sleep 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         if (!iwl_is_ready(priv)) {
2833                 IWL_DEBUG_MAC80211(priv, "leave - not ready\n");
2834                 goto out;
2835         }
2836
2837         if (scan_active)
2838                 goto out;
2839
2840         if (memcmp(&priv->active_rxon,
2841                    &priv->staging_rxon, sizeof(priv->staging_rxon)))
2842                 iwlcore_commit_rxon(priv);
2843         else
2844                 IWL_DEBUG_INFO(priv, "Not re-sending same RXON configuration.\n");
2845
2846
2847 out:
2848         IWL_DEBUG_MAC80211(priv, "leave\n");
2849         mutex_unlock(&priv->mutex);
2850         return ret;
2851 }
2852 EXPORT_SYMBOL(iwl_mac_config);
2853
2854 void iwl_mac_reset_tsf(struct ieee80211_hw *hw)
2855 {
2856         struct iwl_priv *priv = hw->priv;
2857         unsigned long flags;
2858
2859         mutex_lock(&priv->mutex);
2860         IWL_DEBUG_MAC80211(priv, "enter\n");
2861
2862         spin_lock_irqsave(&priv->lock, flags);
2863         memset(&priv->current_ht_config, 0, sizeof(struct iwl_ht_config));
2864         spin_unlock_irqrestore(&priv->lock, flags);
2865
2866         iwl_reset_qos(priv);
2867
2868         spin_lock_irqsave(&priv->lock, flags);
2869         priv->assoc_id = 0;
2870         priv->assoc_capability = 0;
2871         priv->assoc_station_added = 0;
2872
2873         /* new association get rid of ibss beacon skb */
2874         if (priv->ibss_beacon)
2875                 dev_kfree_skb(priv->ibss_beacon);
2876
2877         priv->ibss_beacon = NULL;
2878
2879         priv->beacon_int = priv->vif->bss_conf.beacon_int;
2880         priv->timestamp = 0;
2881         if ((priv->iw_mode == NL80211_IFTYPE_STATION))
2882                 priv->beacon_int = 0;
2883
2884         spin_unlock_irqrestore(&priv->lock, flags);
2885
2886         if (!iwl_is_ready_rf(priv)) {
2887                 IWL_DEBUG_MAC80211(priv, "leave - not ready\n");
2888                 mutex_unlock(&priv->mutex);
2889                 return;
2890         }
2891
2892         /* we are restarting association process
2893          * clear RXON_FILTER_ASSOC_MSK bit
2894          */
2895         if (priv->iw_mode != NL80211_IFTYPE_AP) {
2896                 iwl_scan_cancel_timeout(priv, 100);
2897                 priv->staging_rxon.filter_flags &= ~RXON_FILTER_ASSOC_MSK;
2898                 iwlcore_commit_rxon(priv);
2899         }
2900
2901         if (priv->iw_mode != NL80211_IFTYPE_ADHOC) {
2902                 IWL_DEBUG_MAC80211(priv, "leave - not in IBSS\n");
2903                 mutex_unlock(&priv->mutex);
2904                 return;
2905         }
2906
2907         iwl_set_rate(priv);
2908
2909         mutex_unlock(&priv->mutex);
2910
2911         IWL_DEBUG_MAC80211(priv, "leave\n");
2912 }
2913 EXPORT_SYMBOL(iwl_mac_reset_tsf);
2914
2915 int iwl_alloc_txq_mem(struct iwl_priv *priv)
2916 {
2917         if (!priv->txq)
2918                 priv->txq = kzalloc(
2919                         sizeof(struct iwl_tx_queue) * priv->cfg->num_of_queues,
2920                         GFP_KERNEL);
2921         if (!priv->txq) {
2922                 IWL_ERR(priv, "Not enough memory for txq \n");
2923                 return -ENOMEM;
2924         }
2925         return 0;
2926 }
2927 EXPORT_SYMBOL(iwl_alloc_txq_mem);
2928
2929 void iwl_free_txq_mem(struct iwl_priv *priv)
2930 {
2931         kfree(priv->txq);
2932         priv->txq = NULL;
2933 }
2934 EXPORT_SYMBOL(iwl_free_txq_mem);
2935
2936 int iwl_send_wimax_coex(struct iwl_priv *priv)
2937 {
2938         struct iwl_wimax_coex_cmd uninitialized_var(coex_cmd);
2939
2940         if (priv->cfg->support_wimax_coexist) {
2941                 /* UnMask wake up src at associated sleep */
2942                 coex_cmd.flags |= COEX_FLAGS_ASSOC_WA_UNMASK_MSK;
2943
2944                 /* UnMask wake up src at unassociated sleep */
2945                 coex_cmd.flags |= COEX_FLAGS_UNASSOC_WA_UNMASK_MSK;
2946                 memcpy(coex_cmd.sta_prio, cu_priorities,
2947                         sizeof(struct iwl_wimax_coex_event_entry) *
2948                          COEX_NUM_OF_EVENTS);
2949
2950                 /* enabling the coexistence feature */
2951                 coex_cmd.flags |= COEX_FLAGS_COEX_ENABLE_MSK;
2952
2953                 /* enabling the priorities tables */
2954                 coex_cmd.flags |= COEX_FLAGS_STA_TABLE_VALID_MSK;
2955         } else {
2956                 /* coexistence is disabled */
2957                 memset(&coex_cmd, 0, sizeof(coex_cmd));
2958         }
2959         return iwl_send_cmd_pdu(priv, COEX_PRIORITY_TABLE_CMD,
2960                                 sizeof(coex_cmd), &coex_cmd);
2961 }
2962 EXPORT_SYMBOL(iwl_send_wimax_coex);
2963
2964 #ifdef CONFIG_IWLWIFI_DEBUGFS
2965
2966 #define IWL_TRAFFIC_DUMP_SIZE   (IWL_TRAFFIC_ENTRY_SIZE * IWL_TRAFFIC_ENTRIES)
2967
2968 void iwl_reset_traffic_log(struct iwl_priv *priv)
2969 {
2970         priv->tx_traffic_idx = 0;
2971         priv->rx_traffic_idx = 0;
2972         if (priv->tx_traffic)
2973                 memset(priv->tx_traffic, 0, IWL_TRAFFIC_DUMP_SIZE);
2974         if (priv->rx_traffic)
2975                 memset(priv->rx_traffic, 0, IWL_TRAFFIC_DUMP_SIZE);
2976 }
2977
2978 int iwl_alloc_traffic_mem(struct iwl_priv *priv)
2979 {
2980         u32 traffic_size = IWL_TRAFFIC_DUMP_SIZE;
2981
2982         if (iwl_debug_level & IWL_DL_TX) {
2983                 if (!priv->tx_traffic) {
2984                         priv->tx_traffic =
2985                                 kzalloc(traffic_size, GFP_KERNEL);
2986                         if (!priv->tx_traffic)
2987                                 return -ENOMEM;
2988                 }
2989         }
2990         if (iwl_debug_level & IWL_DL_RX) {
2991                 if (!priv->rx_traffic) {
2992                         priv->rx_traffic =
2993                                 kzalloc(traffic_size, GFP_KERNEL);
2994                         if (!priv->rx_traffic)
2995                                 return -ENOMEM;
2996                 }
2997         }
2998         iwl_reset_traffic_log(priv);
2999         return 0;
3000 }
3001 EXPORT_SYMBOL(iwl_alloc_traffic_mem);
3002
3003 void iwl_free_traffic_mem(struct iwl_priv *priv)
3004 {
3005         kfree(priv->tx_traffic);
3006         priv->tx_traffic = NULL;
3007
3008         kfree(priv->rx_traffic);
3009         priv->rx_traffic = NULL;
3010 }
3011 EXPORT_SYMBOL(iwl_free_traffic_mem);
3012
3013 void iwl_dbg_log_tx_data_frame(struct iwl_priv *priv,
3014                       u16 length, struct ieee80211_hdr *header)
3015 {
3016         __le16 fc;
3017         u16 len;
3018
3019         if (likely(!(iwl_debug_level & IWL_DL_TX)))
3020                 return;
3021
3022         if (!priv->tx_traffic)
3023                 return;
3024
3025         fc = header->frame_control;
3026         if (ieee80211_is_data(fc)) {
3027                 len = (length > IWL_TRAFFIC_ENTRY_SIZE)
3028                        ? IWL_TRAFFIC_ENTRY_SIZE : length;
3029                 memcpy((priv->tx_traffic +
3030                        (priv->tx_traffic_idx * IWL_TRAFFIC_ENTRY_SIZE)),
3031                        header, len);
3032                 priv->tx_traffic_idx =
3033                         (priv->tx_traffic_idx + 1) % IWL_TRAFFIC_ENTRIES;
3034         }
3035 }
3036 EXPORT_SYMBOL(iwl_dbg_log_tx_data_frame);
3037
3038 void iwl_dbg_log_rx_data_frame(struct iwl_priv *priv,
3039                       u16 length, struct ieee80211_hdr *header)
3040 {
3041         __le16 fc;
3042         u16 len;
3043
3044         if (likely(!(iwl_debug_level & IWL_DL_RX)))
3045                 return;
3046
3047         if (!priv->rx_traffic)
3048                 return;
3049
3050         fc = header->frame_control;
3051         if (ieee80211_is_data(fc)) {
3052                 len = (length > IWL_TRAFFIC_ENTRY_SIZE)
3053                        ? IWL_TRAFFIC_ENTRY_SIZE : length;
3054                 memcpy((priv->rx_traffic +
3055                        (priv->rx_traffic_idx * IWL_TRAFFIC_ENTRY_SIZE)),
3056                        header, len);
3057                 priv->rx_traffic_idx =
3058                         (priv->rx_traffic_idx + 1) % IWL_TRAFFIC_ENTRIES;
3059         }
3060 }
3061 EXPORT_SYMBOL(iwl_dbg_log_rx_data_frame);
3062
3063 const char *get_mgmt_string(int cmd)
3064 {
3065         switch (cmd) {
3066                 IWL_CMD(MANAGEMENT_ASSOC_REQ);
3067                 IWL_CMD(MANAGEMENT_ASSOC_RESP);
3068                 IWL_CMD(MANAGEMENT_REASSOC_REQ);
3069                 IWL_CMD(MANAGEMENT_REASSOC_RESP);
3070                 IWL_CMD(MANAGEMENT_PROBE_REQ);
3071                 IWL_CMD(MANAGEMENT_PROBE_RESP);
3072                 IWL_CMD(MANAGEMENT_BEACON);
3073                 IWL_CMD(MANAGEMENT_ATIM);
3074                 IWL_CMD(MANAGEMENT_DISASSOC);
3075                 IWL_CMD(MANAGEMENT_AUTH);
3076                 IWL_CMD(MANAGEMENT_DEAUTH);
3077                 IWL_CMD(MANAGEMENT_ACTION);
3078         default:
3079                 return "UNKNOWN";
3080
3081         }
3082 }
3083
3084 const char *get_ctrl_string(int cmd)
3085 {
3086         switch (cmd) {
3087                 IWL_CMD(CONTROL_BACK_REQ);
3088                 IWL_CMD(CONTROL_BACK);
3089                 IWL_CMD(CONTROL_PSPOLL);
3090                 IWL_CMD(CONTROL_RTS);
3091                 IWL_CMD(CONTROL_CTS);
3092                 IWL_CMD(CONTROL_ACK);
3093                 IWL_CMD(CONTROL_CFEND);
3094                 IWL_CMD(CONTROL_CFENDACK);
3095         default:
3096                 return "UNKNOWN";
3097
3098         }
3099 }
3100
3101 void iwl_clear_traffic_stats(struct iwl_priv *priv)
3102 {
3103         memset(&priv->tx_stats, 0, sizeof(struct traffic_stats));
3104         memset(&priv->rx_stats, 0, sizeof(struct traffic_stats));
3105         priv->led_tpt = 0;
3106 }
3107
3108 /*
3109  * if CONFIG_IWLWIFI_DEBUGFS defined, iwl_update_stats function will
3110  * record all the MGMT, CTRL and DATA pkt for both TX and Rx pass.
3111  * Use debugFs to display the rx/rx_statistics
3112  * if CONFIG_IWLWIFI_DEBUGFS not being defined, then no MGMT and CTRL
3113  * information will be recorded, but DATA pkt still will be recorded
3114  * for the reason of iwl_led.c need to control the led blinking based on
3115  * number of tx and rx data.
3116  *
3117  */
3118 void iwl_update_stats(struct iwl_priv *priv, bool is_tx, __le16 fc, u16 len)
3119 {
3120         struct traffic_stats    *stats;
3121
3122         if (is_tx)
3123                 stats = &priv->tx_stats;
3124         else
3125                 stats = &priv->rx_stats;
3126
3127         if (ieee80211_is_mgmt(fc)) {
3128                 switch (fc & cpu_to_le16(IEEE80211_FCTL_STYPE)) {
3129                 case cpu_to_le16(IEEE80211_STYPE_ASSOC_REQ):
3130                         stats->mgmt[MANAGEMENT_ASSOC_REQ]++;
3131                         break;
3132                 case cpu_to_le16(IEEE80211_STYPE_ASSOC_RESP):
3133                         stats->mgmt[MANAGEMENT_ASSOC_RESP]++;
3134                         break;
3135                 case cpu_to_le16(IEEE80211_STYPE_REASSOC_REQ):
3136                         stats->mgmt[MANAGEMENT_REASSOC_REQ]++;
3137                         break;
3138                 case cpu_to_le16(IEEE80211_STYPE_REASSOC_RESP):
3139                         stats->mgmt[MANAGEMENT_REASSOC_RESP]++;
3140                         break;
3141                 case cpu_to_le16(IEEE80211_STYPE_PROBE_REQ):
3142                         stats->mgmt[MANAGEMENT_PROBE_REQ]++;
3143                         break;
3144                 case cpu_to_le16(IEEE80211_STYPE_PROBE_RESP):
3145                         stats->mgmt[MANAGEMENT_PROBE_RESP]++;
3146                         break;
3147                 case cpu_to_le16(IEEE80211_STYPE_BEACON):
3148                         stats->mgmt[MANAGEMENT_BEACON]++;
3149                         break;
3150                 case cpu_to_le16(IEEE80211_STYPE_ATIM):
3151                         stats->mgmt[MANAGEMENT_ATIM]++;
3152                         break;
3153                 case cpu_to_le16(IEEE80211_STYPE_DISASSOC):
3154                         stats->mgmt[MANAGEMENT_DISASSOC]++;
3155                         break;
3156                 case cpu_to_le16(IEEE80211_STYPE_AUTH):
3157                         stats->mgmt[MANAGEMENT_AUTH]++;
3158                         break;
3159                 case cpu_to_le16(IEEE80211_STYPE_DEAUTH):
3160                         stats->mgmt[MANAGEMENT_DEAUTH]++;
3161                         break;
3162                 case cpu_to_le16(IEEE80211_STYPE_ACTION):
3163                         stats->mgmt[MANAGEMENT_ACTION]++;
3164                         break;
3165                 }
3166         } else if (ieee80211_is_ctl(fc)) {
3167                 switch (fc & cpu_to_le16(IEEE80211_FCTL_STYPE)) {
3168                 case cpu_to_le16(IEEE80211_STYPE_BACK_REQ):
3169                         stats->ctrl[CONTROL_BACK_REQ]++;
3170                         break;
3171                 case cpu_to_le16(IEEE80211_STYPE_BACK):
3172                         stats->ctrl[CONTROL_BACK]++;
3173                         break;
3174                 case cpu_to_le16(IEEE80211_STYPE_PSPOLL):
3175                         stats->ctrl[CONTROL_PSPOLL]++;
3176                         break;
3177                 case cpu_to_le16(IEEE80211_STYPE_RTS):
3178                         stats->ctrl[CONTROL_RTS]++;
3179                         break;
3180                 case cpu_to_le16(IEEE80211_STYPE_CTS):
3181                         stats->ctrl[CONTROL_CTS]++;
3182                         break;
3183                 case cpu_to_le16(IEEE80211_STYPE_ACK):
3184                         stats->ctrl[CONTROL_ACK]++;
3185                         break;
3186                 case cpu_to_le16(IEEE80211_STYPE_CFEND):
3187                         stats->ctrl[CONTROL_CFEND]++;
3188                         break;
3189                 case cpu_to_le16(IEEE80211_STYPE_CFENDACK):
3190                         stats->ctrl[CONTROL_CFENDACK]++;
3191                         break;
3192                 }
3193         } else {
3194                 /* data */
3195                 stats->data_cnt++;
3196                 stats->data_bytes += len;
3197         }
3198         iwl_leds_background(priv);
3199 }
3200 EXPORT_SYMBOL(iwl_update_stats);
3201 #endif
3202
3203 const static char *get_csr_string(int cmd)
3204 {
3205         switch (cmd) {
3206                 IWL_CMD(CSR_HW_IF_CONFIG_REG);
3207                 IWL_CMD(CSR_INT_COALESCING);
3208                 IWL_CMD(CSR_INT);
3209                 IWL_CMD(CSR_INT_MASK);
3210                 IWL_CMD(CSR_FH_INT_STATUS);
3211                 IWL_CMD(CSR_GPIO_IN);
3212                 IWL_CMD(CSR_RESET);
3213                 IWL_CMD(CSR_GP_CNTRL);
3214                 IWL_CMD(CSR_HW_REV);
3215                 IWL_CMD(CSR_EEPROM_REG);
3216                 IWL_CMD(CSR_EEPROM_GP);
3217                 IWL_CMD(CSR_OTP_GP_REG);
3218                 IWL_CMD(CSR_GIO_REG);
3219                 IWL_CMD(CSR_GP_UCODE_REG);
3220                 IWL_CMD(CSR_GP_DRIVER_REG);
3221                 IWL_CMD(CSR_UCODE_DRV_GP1);
3222                 IWL_CMD(CSR_UCODE_DRV_GP2);
3223                 IWL_CMD(CSR_LED_REG);
3224                 IWL_CMD(CSR_DRAM_INT_TBL_REG);
3225                 IWL_CMD(CSR_GIO_CHICKEN_BITS);
3226                 IWL_CMD(CSR_ANA_PLL_CFG);
3227                 IWL_CMD(CSR_HW_REV_WA_REG);
3228                 IWL_CMD(CSR_DBG_HPET_MEM_REG);
3229         default:
3230                 return "UNKNOWN";
3231
3232         }
3233 }
3234
3235 void iwl_dump_csr(struct iwl_priv *priv)
3236 {
3237         int i;
3238         u32 csr_tbl[] = {
3239                 CSR_HW_IF_CONFIG_REG,
3240                 CSR_INT_COALESCING,
3241                 CSR_INT,
3242                 CSR_INT_MASK,
3243                 CSR_FH_INT_STATUS,
3244                 CSR_GPIO_IN,
3245                 CSR_RESET,
3246                 CSR_GP_CNTRL,
3247                 CSR_HW_REV,
3248                 CSR_EEPROM_REG,
3249                 CSR_EEPROM_GP,
3250                 CSR_OTP_GP_REG,
3251                 CSR_GIO_REG,
3252                 CSR_GP_UCODE_REG,
3253                 CSR_GP_DRIVER_REG,
3254                 CSR_UCODE_DRV_GP1,
3255                 CSR_UCODE_DRV_GP2,
3256                 CSR_LED_REG,
3257                 CSR_DRAM_INT_TBL_REG,
3258                 CSR_GIO_CHICKEN_BITS,
3259                 CSR_ANA_PLL_CFG,
3260                 CSR_HW_REV_WA_REG,
3261                 CSR_DBG_HPET_MEM_REG
3262         };
3263         IWL_ERR(priv, "CSR values:\n");
3264         IWL_ERR(priv, "(2nd byte of CSR_INT_COALESCING is "
3265                 "CSR_INT_PERIODIC_REG)\n");
3266         for (i = 0; i <  ARRAY_SIZE(csr_tbl); i++) {
3267                 IWL_ERR(priv, "  %25s: 0X%08x\n",
3268                         get_csr_string(csr_tbl[i]),
3269                         iwl_read32(priv, csr_tbl[i]));
3270         }
3271 }
3272 EXPORT_SYMBOL(iwl_dump_csr);
3273
3274 const static char *get_fh_string(int cmd)
3275 {
3276         switch (cmd) {
3277                 IWL_CMD(FH_RSCSR_CHNL0_STTS_WPTR_REG);
3278                 IWL_CMD(FH_RSCSR_CHNL0_RBDCB_BASE_REG);
3279                 IWL_CMD(FH_RSCSR_CHNL0_WPTR);
3280                 IWL_CMD(FH_MEM_RCSR_CHNL0_CONFIG_REG);
3281                 IWL_CMD(FH_MEM_RSSR_SHARED_CTRL_REG);
3282                 IWL_CMD(FH_MEM_RSSR_RX_STATUS_REG);
3283                 IWL_CMD(FH_MEM_RSSR_RX_ENABLE_ERR_IRQ2DRV);
3284                 IWL_CMD(FH_TSSR_TX_STATUS_REG);
3285                 IWL_CMD(FH_TSSR_TX_ERROR_REG);
3286         default:
3287                 return "UNKNOWN";
3288
3289         }
3290 }
3291
3292 int iwl_dump_fh(struct iwl_priv *priv, char **buf, bool display)
3293 {
3294         int i;
3295 #ifdef CONFIG_IWLWIFI_DEBUG
3296         int pos = 0;
3297         size_t bufsz = 0;
3298 #endif
3299         u32 fh_tbl[] = {
3300                 FH_RSCSR_CHNL0_STTS_WPTR_REG,
3301                 FH_RSCSR_CHNL0_RBDCB_BASE_REG,
3302                 FH_RSCSR_CHNL0_WPTR,
3303                 FH_MEM_RCSR_CHNL0_CONFIG_REG,
3304                 FH_MEM_RSSR_SHARED_CTRL_REG,
3305                 FH_MEM_RSSR_RX_STATUS_REG,
3306                 FH_MEM_RSSR_RX_ENABLE_ERR_IRQ2DRV,
3307                 FH_TSSR_TX_STATUS_REG,
3308                 FH_TSSR_TX_ERROR_REG
3309         };
3310 #ifdef CONFIG_IWLWIFI_DEBUG
3311         if (display) {
3312                 bufsz = ARRAY_SIZE(fh_tbl) * 48 + 40;
3313                 *buf = kmalloc(bufsz, GFP_KERNEL);
3314                 if (!*buf)
3315                         return -ENOMEM;
3316                 pos += scnprintf(*buf + pos, bufsz - pos,
3317                                 "FH register values:\n");
3318                 for (i = 0; i < ARRAY_SIZE(fh_tbl); i++) {
3319                         pos += scnprintf(*buf + pos, bufsz - pos,
3320                                 "  %34s: 0X%08x\n",
3321                                 get_fh_string(fh_tbl[i]),
3322                                 iwl_read_direct32(priv, fh_tbl[i]));
3323                 }
3324                 return pos;
3325         }
3326 #endif
3327         IWL_ERR(priv, "FH register values:\n");
3328         for (i = 0; i <  ARRAY_SIZE(fh_tbl); i++) {
3329                 IWL_ERR(priv, "  %34s: 0X%08x\n",
3330                         get_fh_string(fh_tbl[i]),
3331                         iwl_read_direct32(priv, fh_tbl[i]));
3332         }
3333         return 0;
3334 }
3335 EXPORT_SYMBOL(iwl_dump_fh);
3336
3337 static void iwl_force_rf_reset(struct iwl_priv *priv)
3338 {
3339         if (test_bit(STATUS_EXIT_PENDING, &priv->status))
3340                 return;
3341
3342         if (!iwl_is_associated(priv)) {
3343                 IWL_DEBUG_SCAN(priv, "force reset rejected: not associated\n");
3344                 return;
3345         }
3346         /*
3347          * There is no easy and better way to force reset the radio,
3348          * the only known method is switching channel which will force to
3349          * reset and tune the radio.
3350          * Use internal short scan (single channel) operation to should
3351          * achieve this objective.
3352          * Driver should reset the radio when number of consecutive missed
3353          * beacon, or any other uCode error condition detected.
3354          */
3355         IWL_DEBUG_INFO(priv, "perform radio reset.\n");
3356         iwl_internal_short_hw_scan(priv);
3357         return;
3358 }
3359
3360
3361 int iwl_force_reset(struct iwl_priv *priv, int mode)
3362 {
3363         struct iwl_force_reset *force_reset;
3364
3365         if (test_bit(STATUS_EXIT_PENDING, &priv->status))
3366                 return -EINVAL;
3367
3368         if (mode >= IWL_MAX_FORCE_RESET) {
3369                 IWL_DEBUG_INFO(priv, "invalid reset request.\n");
3370                 return -EINVAL;
3371         }
3372         force_reset = &priv->force_reset[mode];
3373         force_reset->reset_request_count++;
3374         if (force_reset->last_force_reset_jiffies &&
3375             time_after(force_reset->last_force_reset_jiffies +
3376             force_reset->reset_duration, jiffies)) {
3377                 IWL_DEBUG_INFO(priv, "force reset rejected\n");
3378                 force_reset->reset_reject_count++;
3379                 return -EAGAIN;
3380         }
3381         force_reset->reset_success_count++;
3382         force_reset->last_force_reset_jiffies = jiffies;
3383         IWL_DEBUG_INFO(priv, "perform force reset (%d)\n", mode);
3384         switch (mode) {
3385         case IWL_RF_RESET:
3386                 iwl_force_rf_reset(priv);
3387                 break;
3388         case IWL_FW_RESET:
3389                 IWL_ERR(priv, "On demand firmware reload\n");
3390                 /* Set the FW error flag -- cleared on iwl_down */
3391                 set_bit(STATUS_FW_ERROR, &priv->status);
3392                 wake_up_interruptible(&priv->wait_command_queue);
3393                 /*
3394                  * Keep the restart process from trying to send host
3395                  * commands by clearing the INIT status bit
3396                  */
3397                 clear_bit(STATUS_READY, &priv->status);
3398                 queue_work(priv->workqueue, &priv->restart);
3399                 break;
3400         }
3401         return 0;
3402 }
3403
3404 #ifdef CONFIG_PM
3405
3406 int iwl_pci_suspend(struct pci_dev *pdev, pm_message_t state)
3407 {
3408         struct iwl_priv *priv = pci_get_drvdata(pdev);
3409
3410         /*
3411          * This function is called when system goes into suspend state
3412          * mac80211 will call iwl_mac_stop() from the mac80211 suspend function
3413          * first but since iwl_mac_stop() has no knowledge of who the caller is,
3414          * it will not call apm_ops.stop() to stop the DMA operation.
3415          * Calling apm_ops.stop here to make sure we stop the DMA.
3416          */
3417         priv->cfg->ops->lib->apm_ops.stop(priv);
3418
3419         pci_save_state(pdev);
3420         pci_disable_device(pdev);
3421         pci_set_power_state(pdev, PCI_D3hot);
3422
3423         return 0;
3424 }
3425 EXPORT_SYMBOL(iwl_pci_suspend);
3426
3427 int iwl_pci_resume(struct pci_dev *pdev)
3428 {
3429         struct iwl_priv *priv = pci_get_drvdata(pdev);
3430         int ret;
3431
3432         pci_set_power_state(pdev, PCI_D0);
3433         ret = pci_enable_device(pdev);
3434         if (ret)
3435                 return ret;
3436         pci_restore_state(pdev);
3437         iwl_enable_interrupts(priv);
3438
3439         return 0;
3440 }
3441 EXPORT_SYMBOL(iwl_pci_resume);
3442
3443 #endif /* CONFIG_PM */