mac80211: rewrite HT handling
[linux-2.6.git] / drivers / net / wireless / iwlwifi / iwl-agn.c
1 /******************************************************************************
2  *
3  * Copyright(c) 2003 - 2008 Intel Corporation. All rights reserved.
4  *
5  * Portions of this file are derived from the ipw3945 project, as well
6  * as portions of the ieee80211 subsystem header files.
7  *
8  * This program is free software; you can redistribute it and/or modify it
9  * under the terms of version 2 of the GNU General Public License as
10  * published by the Free Software Foundation.
11  *
12  * This program is distributed in the hope that it will be useful, but WITHOUT
13  * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
14  * FITNESS FOR A PARTICULAR PURPOSE.  See the GNU General Public License for
15  * more details.
16  *
17  * You should have received a copy of the GNU General Public License along with
18  * this program; if not, write to the Free Software Foundation, Inc.,
19  * 51 Franklin Street, Fifth Floor, Boston, MA 02110, USA
20  *
21  * The full GNU General Public License is included in this distribution in the
22  * file called LICENSE.
23  *
24  * Contact Information:
25  * James P. Ketrenos <ipw2100-admin@linux.intel.com>
26  * Intel Corporation, 5200 N.E. Elam Young Parkway, Hillsboro, OR 97124-6497
27  *
28  *****************************************************************************/
29
30 #include <linux/kernel.h>
31 #include <linux/module.h>
32 #include <linux/init.h>
33 #include <linux/pci.h>
34 #include <linux/dma-mapping.h>
35 #include <linux/delay.h>
36 #include <linux/skbuff.h>
37 #include <linux/netdevice.h>
38 #include <linux/wireless.h>
39 #include <linux/firmware.h>
40 #include <linux/etherdevice.h>
41 #include <linux/if_arp.h>
42
43 #include <net/mac80211.h>
44
45 #include <asm/div64.h>
46
47 #include "iwl-eeprom.h"
48 #include "iwl-dev.h"
49 #include "iwl-core.h"
50 #include "iwl-io.h"
51 #include "iwl-helpers.h"
52 #include "iwl-sta.h"
53 #include "iwl-calib.h"
54
55
56 /******************************************************************************
57  *
58  * module boiler plate
59  *
60  ******************************************************************************/
61
62 /*
63  * module name, copyright, version, etc.
64  * NOTE: DRV_NAME is defined in iwlwifi.h for use by iwl-debug.h and printk
65  */
66
67 #define DRV_DESCRIPTION "Intel(R) Wireless WiFi Link AGN driver for Linux"
68
69 #ifdef CONFIG_IWLWIFI_DEBUG
70 #define VD "d"
71 #else
72 #define VD
73 #endif
74
75 #ifdef CONFIG_IWLAGN_SPECTRUM_MEASUREMENT
76 #define VS "s"
77 #else
78 #define VS
79 #endif
80
81 #define DRV_VERSION     IWLWIFI_VERSION VD VS
82
83
84 MODULE_DESCRIPTION(DRV_DESCRIPTION);
85 MODULE_VERSION(DRV_VERSION);
86 MODULE_AUTHOR(DRV_COPYRIGHT);
87 MODULE_LICENSE("GPL");
88 MODULE_ALIAS("iwl4965");
89
90 /*************** STATION TABLE MANAGEMENT ****
91  * mac80211 should be examined to determine if sta_info is duplicating
92  * the functionality provided here
93  */
94
95 /**************************************************************/
96
97
98
99 static void iwl4965_set_rxon_hwcrypto(struct iwl_priv *priv, int hw_decrypt)
100 {
101         struct iwl_rxon_cmd *rxon = &priv->staging_rxon;
102
103         if (hw_decrypt)
104                 rxon->filter_flags &= ~RXON_FILTER_DIS_DECRYPT_MSK;
105         else
106                 rxon->filter_flags |= RXON_FILTER_DIS_DECRYPT_MSK;
107
108 }
109
110 /**
111  * iwl4965_check_rxon_cmd - validate RXON structure is valid
112  *
113  * NOTE:  This is really only useful during development and can eventually
114  * be #ifdef'd out once the driver is stable and folks aren't actively
115  * making changes
116  */
117 static int iwl4965_check_rxon_cmd(struct iwl_rxon_cmd *rxon)
118 {
119         int error = 0;
120         int counter = 1;
121
122         if (rxon->flags & RXON_FLG_BAND_24G_MSK) {
123                 error |= le32_to_cpu(rxon->flags &
124                                 (RXON_FLG_TGJ_NARROW_BAND_MSK |
125                                  RXON_FLG_RADAR_DETECT_MSK));
126                 if (error)
127                         IWL_WARNING("check 24G fields %d | %d\n",
128                                     counter++, error);
129         } else {
130                 error |= (rxon->flags & RXON_FLG_SHORT_SLOT_MSK) ?
131                                 0 : le32_to_cpu(RXON_FLG_SHORT_SLOT_MSK);
132                 if (error)
133                         IWL_WARNING("check 52 fields %d | %d\n",
134                                     counter++, error);
135                 error |= le32_to_cpu(rxon->flags & RXON_FLG_CCK_MSK);
136                 if (error)
137                         IWL_WARNING("check 52 CCK %d | %d\n",
138                                     counter++, error);
139         }
140         error |= (rxon->node_addr[0] | rxon->bssid_addr[0]) & 0x1;
141         if (error)
142                 IWL_WARNING("check mac addr %d | %d\n", counter++, error);
143
144         /* make sure basic rates 6Mbps and 1Mbps are supported */
145         error |= (((rxon->ofdm_basic_rates & IWL_RATE_6M_MASK) == 0) &&
146                   ((rxon->cck_basic_rates & IWL_RATE_1M_MASK) == 0));
147         if (error)
148                 IWL_WARNING("check basic rate %d | %d\n", counter++, error);
149
150         error |= (le16_to_cpu(rxon->assoc_id) > 2007);
151         if (error)
152                 IWL_WARNING("check assoc id %d | %d\n", counter++, error);
153
154         error |= ((rxon->flags & (RXON_FLG_CCK_MSK | RXON_FLG_SHORT_SLOT_MSK))
155                         == (RXON_FLG_CCK_MSK | RXON_FLG_SHORT_SLOT_MSK));
156         if (error)
157                 IWL_WARNING("check CCK and short slot %d | %d\n",
158                             counter++, error);
159
160         error |= ((rxon->flags & (RXON_FLG_CCK_MSK | RXON_FLG_AUTO_DETECT_MSK))
161                         == (RXON_FLG_CCK_MSK | RXON_FLG_AUTO_DETECT_MSK));
162         if (error)
163                 IWL_WARNING("check CCK & auto detect %d | %d\n",
164                             counter++, error);
165
166         error |= ((rxon->flags & (RXON_FLG_AUTO_DETECT_MSK |
167                         RXON_FLG_TGG_PROTECT_MSK)) == RXON_FLG_TGG_PROTECT_MSK);
168         if (error)
169                 IWL_WARNING("check TGG and auto detect %d | %d\n",
170                             counter++, error);
171
172         if (error)
173                 IWL_WARNING("Tuning to channel %d\n",
174                             le16_to_cpu(rxon->channel));
175
176         if (error) {
177                 IWL_ERROR("Not a valid iwl4965_rxon_assoc_cmd field values\n");
178                 return -1;
179         }
180         return 0;
181 }
182
183 /**
184  * iwl_full_rxon_required - check if full RXON (vs RXON_ASSOC) cmd is needed
185  * @priv: staging_rxon is compared to active_rxon
186  *
187  * If the RXON structure is changing enough to require a new tune,
188  * or is clearing the RXON_FILTER_ASSOC_MSK, then return 1 to indicate that
189  * a new tune (full RXON command, rather than RXON_ASSOC cmd) is required.
190  */
191 static int iwl_full_rxon_required(struct iwl_priv *priv)
192 {
193
194         /* These items are only settable from the full RXON command */
195         if (!(iwl_is_associated(priv)) ||
196             compare_ether_addr(priv->staging_rxon.bssid_addr,
197                                priv->active_rxon.bssid_addr) ||
198             compare_ether_addr(priv->staging_rxon.node_addr,
199                                priv->active_rxon.node_addr) ||
200             compare_ether_addr(priv->staging_rxon.wlap_bssid_addr,
201                                priv->active_rxon.wlap_bssid_addr) ||
202             (priv->staging_rxon.dev_type != priv->active_rxon.dev_type) ||
203             (priv->staging_rxon.channel != priv->active_rxon.channel) ||
204             (priv->staging_rxon.air_propagation !=
205              priv->active_rxon.air_propagation) ||
206             (priv->staging_rxon.ofdm_ht_single_stream_basic_rates !=
207              priv->active_rxon.ofdm_ht_single_stream_basic_rates) ||
208             (priv->staging_rxon.ofdm_ht_dual_stream_basic_rates !=
209              priv->active_rxon.ofdm_ht_dual_stream_basic_rates) ||
210             (priv->staging_rxon.assoc_id != priv->active_rxon.assoc_id))
211                 return 1;
212
213         /* flags, filter_flags, ofdm_basic_rates, and cck_basic_rates can
214          * be updated with the RXON_ASSOC command -- however only some
215          * flag transitions are allowed using RXON_ASSOC */
216
217         /* Check if we are not switching bands */
218         if ((priv->staging_rxon.flags & RXON_FLG_BAND_24G_MSK) !=
219             (priv->active_rxon.flags & RXON_FLG_BAND_24G_MSK))
220                 return 1;
221
222         /* Check if we are switching association toggle */
223         if ((priv->staging_rxon.filter_flags & RXON_FILTER_ASSOC_MSK) !=
224                 (priv->active_rxon.filter_flags & RXON_FILTER_ASSOC_MSK))
225                 return 1;
226
227         return 0;
228 }
229
230 /**
231  * iwl4965_commit_rxon - commit staging_rxon to hardware
232  *
233  * The RXON command in staging_rxon is committed to the hardware and
234  * the active_rxon structure is updated with the new data.  This
235  * function correctly transitions out of the RXON_ASSOC_MSK state if
236  * a HW tune is required based on the RXON structure changes.
237  */
238 static int iwl4965_commit_rxon(struct iwl_priv *priv)
239 {
240         /* cast away the const for active_rxon in this function */
241         struct iwl_rxon_cmd *active_rxon = (void *)&priv->active_rxon;
242         int ret;
243         bool new_assoc =
244                 !!(priv->staging_rxon.filter_flags & RXON_FILTER_ASSOC_MSK);
245
246         if (!iwl_is_alive(priv))
247                 return -EBUSY;
248
249         /* always get timestamp with Rx frame */
250         priv->staging_rxon.flags |= RXON_FLG_TSF2HOST_MSK;
251         /* allow CTS-to-self if possible. this is relevant only for
252          * 5000, but will not damage 4965 */
253         priv->staging_rxon.flags |= RXON_FLG_SELF_CTS_EN;
254
255         ret = iwl4965_check_rxon_cmd(&priv->staging_rxon);
256         if (ret) {
257                 IWL_ERROR("Invalid RXON configuration.  Not committing.\n");
258                 return -EINVAL;
259         }
260
261         /* If we don't need to send a full RXON, we can use
262          * iwl4965_rxon_assoc_cmd which is used to reconfigure filter
263          * and other flags for the current radio configuration. */
264         if (!iwl_full_rxon_required(priv)) {
265                 ret = iwl_send_rxon_assoc(priv);
266                 if (ret) {
267                         IWL_ERROR("Error setting RXON_ASSOC (%d)\n", ret);
268                         return ret;
269                 }
270
271                 memcpy(active_rxon, &priv->staging_rxon, sizeof(*active_rxon));
272                 return 0;
273         }
274
275         /* station table will be cleared */
276         priv->assoc_station_added = 0;
277
278         /* If we are currently associated and the new config requires
279          * an RXON_ASSOC and the new config wants the associated mask enabled,
280          * we must clear the associated from the active configuration
281          * before we apply the new config */
282         if (iwl_is_associated(priv) && new_assoc) {
283                 IWL_DEBUG_INFO("Toggling associated bit on current RXON\n");
284                 active_rxon->filter_flags &= ~RXON_FILTER_ASSOC_MSK;
285
286                 ret = iwl_send_cmd_pdu(priv, REPLY_RXON,
287                                       sizeof(struct iwl_rxon_cmd),
288                                       &priv->active_rxon);
289
290                 /* If the mask clearing failed then we set
291                  * active_rxon back to what it was previously */
292                 if (ret) {
293                         active_rxon->filter_flags |= RXON_FILTER_ASSOC_MSK;
294                         IWL_ERROR("Error clearing ASSOC_MSK (%d)\n", ret);
295                         return ret;
296                 }
297         }
298
299         IWL_DEBUG_INFO("Sending RXON\n"
300                        "* with%s RXON_FILTER_ASSOC_MSK\n"
301                        "* channel = %d\n"
302                        "* bssid = %pM\n",
303                        (new_assoc ? "" : "out"),
304                        le16_to_cpu(priv->staging_rxon.channel),
305                        priv->staging_rxon.bssid_addr);
306
307         iwl4965_set_rxon_hwcrypto(priv, !priv->hw_params.sw_crypto);
308
309         /* Apply the new configuration
310          * RXON unassoc clears the station table in uCode, send it before
311          * we add the bcast station. If assoc bit is set, we will send RXON
312          * after having added the bcast and bssid station.
313          */
314         if (!new_assoc) {
315                 ret = iwl_send_cmd_pdu(priv, REPLY_RXON,
316                               sizeof(struct iwl_rxon_cmd), &priv->staging_rxon);
317                 if (ret) {
318                         IWL_ERROR("Error setting new RXON (%d)\n", ret);
319                         return ret;
320                 }
321                 memcpy(active_rxon, &priv->staging_rxon, sizeof(*active_rxon));
322         }
323
324         iwl_clear_stations_table(priv);
325
326         if (!priv->error_recovering)
327                 priv->start_calib = 0;
328
329         /* Add the broadcast address so we can send broadcast frames */
330         if (iwl_rxon_add_station(priv, iwl_bcast_addr, 0) ==
331                                                 IWL_INVALID_STATION) {
332                 IWL_ERROR("Error adding BROADCAST address for transmit.\n");
333                 return -EIO;
334         }
335
336         /* If we have set the ASSOC_MSK and we are in BSS mode then
337          * add the IWL_AP_ID to the station rate table */
338         if (new_assoc) {
339                 if (priv->iw_mode == NL80211_IFTYPE_STATION) {
340                         ret = iwl_rxon_add_station(priv,
341                                            priv->active_rxon.bssid_addr, 1);
342                         if (ret == IWL_INVALID_STATION) {
343                                 IWL_ERROR("Error adding AP address for TX.\n");
344                                 return -EIO;
345                         }
346                         priv->assoc_station_added = 1;
347                         if (priv->default_wep_key &&
348                             iwl_send_static_wepkey_cmd(priv, 0))
349                                 IWL_ERROR("Could not send WEP static key.\n");
350                 }
351
352                 /* Apply the new configuration
353                  * RXON assoc doesn't clear the station table in uCode,
354                  */
355                 ret = iwl_send_cmd_pdu(priv, REPLY_RXON,
356                               sizeof(struct iwl_rxon_cmd), &priv->staging_rxon);
357                 if (ret) {
358                         IWL_ERROR("Error setting new RXON (%d)\n", ret);
359                         return ret;
360                 }
361                 memcpy(active_rxon, &priv->staging_rxon, sizeof(*active_rxon));
362         }
363
364         iwl_init_sensitivity(priv);
365
366         /* If we issue a new RXON command which required a tune then we must
367          * send a new TXPOWER command or we won't be able to Tx any frames */
368         ret = iwl_set_tx_power(priv, priv->tx_power_user_lmt, true);
369         if (ret) {
370                 IWL_ERROR("Error sending TX power (%d)\n", ret);
371                 return ret;
372         }
373
374         return 0;
375 }
376
377 void iwl4965_update_chain_flags(struct iwl_priv *priv)
378 {
379
380         iwl_set_rxon_chain(priv);
381         iwl4965_commit_rxon(priv);
382 }
383
384 static int iwl4965_send_bt_config(struct iwl_priv *priv)
385 {
386         struct iwl4965_bt_cmd bt_cmd = {
387                 .flags = 3,
388                 .lead_time = 0xAA,
389                 .max_kill = 1,
390                 .kill_ack_mask = 0,
391                 .kill_cts_mask = 0,
392         };
393
394         return iwl_send_cmd_pdu(priv, REPLY_BT_CONFIG,
395                                 sizeof(struct iwl4965_bt_cmd), &bt_cmd);
396 }
397
398 static void iwl_clear_free_frames(struct iwl_priv *priv)
399 {
400         struct list_head *element;
401
402         IWL_DEBUG_INFO("%d frames on pre-allocated heap on clear.\n",
403                        priv->frames_count);
404
405         while (!list_empty(&priv->free_frames)) {
406                 element = priv->free_frames.next;
407                 list_del(element);
408                 kfree(list_entry(element, struct iwl_frame, list));
409                 priv->frames_count--;
410         }
411
412         if (priv->frames_count) {
413                 IWL_WARNING("%d frames still in use.  Did we lose one?\n",
414                             priv->frames_count);
415                 priv->frames_count = 0;
416         }
417 }
418
419 static struct iwl_frame *iwl_get_free_frame(struct iwl_priv *priv)
420 {
421         struct iwl_frame *frame;
422         struct list_head *element;
423         if (list_empty(&priv->free_frames)) {
424                 frame = kzalloc(sizeof(*frame), GFP_KERNEL);
425                 if (!frame) {
426                         IWL_ERROR("Could not allocate frame!\n");
427                         return NULL;
428                 }
429
430                 priv->frames_count++;
431                 return frame;
432         }
433
434         element = priv->free_frames.next;
435         list_del(element);
436         return list_entry(element, struct iwl_frame, list);
437 }
438
439 static void iwl_free_frame(struct iwl_priv *priv, struct iwl_frame *frame)
440 {
441         memset(frame, 0, sizeof(*frame));
442         list_add(&frame->list, &priv->free_frames);
443 }
444
445 static unsigned int iwl_fill_beacon_frame(struct iwl_priv *priv,
446                                           struct ieee80211_hdr *hdr,
447                                           const u8 *dest, int left)
448 {
449         if (!iwl_is_associated(priv) || !priv->ibss_beacon ||
450             ((priv->iw_mode != NL80211_IFTYPE_ADHOC) &&
451              (priv->iw_mode != NL80211_IFTYPE_AP)))
452                 return 0;
453
454         if (priv->ibss_beacon->len > left)
455                 return 0;
456
457         memcpy(hdr, priv->ibss_beacon->data, priv->ibss_beacon->len);
458
459         return priv->ibss_beacon->len;
460 }
461
462 static u8 iwl4965_rate_get_lowest_plcp(struct iwl_priv *priv)
463 {
464         int i;
465         int rate_mask;
466
467         /* Set rate mask*/
468         if (priv->staging_rxon.flags & RXON_FLG_BAND_24G_MSK)
469                 rate_mask = priv->active_rate_basic & 0xF;
470         else
471                 rate_mask = priv->active_rate_basic & 0xFF0;
472
473         /* Find lowest valid rate */
474         for (i = IWL_RATE_1M_INDEX; i != IWL_RATE_INVALID;
475                                         i = iwl_rates[i].next_ieee) {
476                 if (rate_mask & (1 << i))
477                         return iwl_rates[i].plcp;
478         }
479
480         /* No valid rate was found. Assign the lowest one */
481         if (priv->staging_rxon.flags & RXON_FLG_BAND_24G_MSK)
482                 return IWL_RATE_1M_PLCP;
483         else
484                 return IWL_RATE_6M_PLCP;
485 }
486
487 static unsigned int iwl4965_hw_get_beacon_cmd(struct iwl_priv *priv,
488                                        struct iwl_frame *frame, u8 rate)
489 {
490         struct iwl_tx_beacon_cmd *tx_beacon_cmd;
491         unsigned int frame_size;
492
493         tx_beacon_cmd = &frame->u.beacon;
494         memset(tx_beacon_cmd, 0, sizeof(*tx_beacon_cmd));
495
496         tx_beacon_cmd->tx.sta_id = priv->hw_params.bcast_sta_id;
497         tx_beacon_cmd->tx.stop_time.life_time = TX_CMD_LIFE_TIME_INFINITE;
498
499         frame_size = iwl_fill_beacon_frame(priv, tx_beacon_cmd->frame,
500                                 iwl_bcast_addr,
501                                 sizeof(frame->u) - sizeof(*tx_beacon_cmd));
502
503         BUG_ON(frame_size > MAX_MPDU_SIZE);
504         tx_beacon_cmd->tx.len = cpu_to_le16((u16)frame_size);
505
506         if ((rate == IWL_RATE_1M_PLCP) || (rate >= IWL_RATE_2M_PLCP))
507                 tx_beacon_cmd->tx.rate_n_flags =
508                         iwl_hw_set_rate_n_flags(rate, RATE_MCS_CCK_MSK);
509         else
510                 tx_beacon_cmd->tx.rate_n_flags =
511                         iwl_hw_set_rate_n_flags(rate, 0);
512
513         tx_beacon_cmd->tx.tx_flags = TX_CMD_FLG_SEQ_CTL_MSK |
514                                      TX_CMD_FLG_TSF_MSK |
515                                      TX_CMD_FLG_STA_RATE_MSK;
516
517         return sizeof(*tx_beacon_cmd) + frame_size;
518 }
519 static int iwl4965_send_beacon_cmd(struct iwl_priv *priv)
520 {
521         struct iwl_frame *frame;
522         unsigned int frame_size;
523         int rc;
524         u8 rate;
525
526         frame = iwl_get_free_frame(priv);
527
528         if (!frame) {
529                 IWL_ERROR("Could not obtain free frame buffer for beacon "
530                           "command.\n");
531                 return -ENOMEM;
532         }
533
534         rate = iwl4965_rate_get_lowest_plcp(priv);
535
536         frame_size = iwl4965_hw_get_beacon_cmd(priv, frame, rate);
537
538         rc = iwl_send_cmd_pdu(priv, REPLY_TX_BEACON, frame_size,
539                               &frame->u.cmd[0]);
540
541         iwl_free_frame(priv, frame);
542
543         return rc;
544 }
545
546 /******************************************************************************
547  *
548  * Misc. internal state and helper functions
549  *
550  ******************************************************************************/
551
552 static void iwl4965_ht_conf(struct iwl_priv *priv,
553                             struct ieee80211_bss_conf *bss_conf)
554 {
555         struct ieee80211_sta_ht_cap *ht_conf;
556         struct iwl_ht_info *iwl_conf = &priv->current_ht_config;
557         struct ieee80211_sta *sta;
558
559         IWL_DEBUG_MAC80211("enter: \n");
560
561         if (!iwl_conf->is_ht)
562                 return;
563
564
565         /*
566          * It is totally wrong to base global information on something
567          * that is valid only when associated, alas, this driver works
568          * that way and I don't know how to fix it.
569          */
570
571         rcu_read_lock();
572         sta = ieee80211_find_sta(priv->hw, priv->bssid);
573         if (!sta) {
574                 rcu_read_unlock();
575                 return;
576         }
577         ht_conf = &sta->ht_cap;
578
579         if (ht_conf->cap & IEEE80211_HT_CAP_SGI_20)
580                 iwl_conf->sgf |= HT_SHORT_GI_20MHZ;
581         if (ht_conf->cap & IEEE80211_HT_CAP_SGI_40)
582                 iwl_conf->sgf |= HT_SHORT_GI_40MHZ;
583
584         iwl_conf->is_green_field = !!(ht_conf->cap & IEEE80211_HT_CAP_GRN_FLD);
585         iwl_conf->max_amsdu_size =
586                 !!(ht_conf->cap & IEEE80211_HT_CAP_MAX_AMSDU);
587
588         iwl_conf->supported_chan_width =
589                 !!(ht_conf->cap & IEEE80211_HT_CAP_SUP_WIDTH_20_40);
590
591         iwl_conf->extension_chan_offset = bss_conf->ht.secondary_channel_offset;
592         /* If no above or below channel supplied disable FAT channel */
593         if (iwl_conf->extension_chan_offset != IEEE80211_HT_PARAM_CHA_SEC_ABOVE &&
594             iwl_conf->extension_chan_offset != IEEE80211_HT_PARAM_CHA_SEC_BELOW) {
595                 iwl_conf->extension_chan_offset = IEEE80211_HT_PARAM_CHA_SEC_NONE;
596                 iwl_conf->supported_chan_width = 0;
597         }
598
599         iwl_conf->sm_ps = (u8)((ht_conf->cap & IEEE80211_HT_CAP_SM_PS) >> 2);
600
601         memcpy(&iwl_conf->mcs, &ht_conf->mcs, 16);
602
603         iwl_conf->tx_chan_width = bss_conf->ht.width_40_ok;
604         iwl_conf->ht_protection =
605                 bss_conf->ht.operation_mode & IEEE80211_HT_OP_MODE_PROTECTION;
606         iwl_conf->non_GF_STA_present =
607                 !!(bss_conf->ht.operation_mode & IEEE80211_HT_OP_MODE_NON_GF_STA_PRSNT);
608
609         rcu_read_unlock();
610
611         IWL_DEBUG_MAC80211("leave\n");
612 }
613
614 /*
615  * QoS  support
616 */
617 static void iwl_activate_qos(struct iwl_priv *priv, u8 force)
618 {
619         if (test_bit(STATUS_EXIT_PENDING, &priv->status))
620                 return;
621
622         if (!priv->qos_data.qos_enable)
623                 return;
624
625         priv->qos_data.def_qos_parm.qos_flags = 0;
626
627         if (priv->qos_data.qos_cap.q_AP.queue_request &&
628             !priv->qos_data.qos_cap.q_AP.txop_request)
629                 priv->qos_data.def_qos_parm.qos_flags |=
630                         QOS_PARAM_FLG_TXOP_TYPE_MSK;
631         if (priv->qos_data.qos_active)
632                 priv->qos_data.def_qos_parm.qos_flags |=
633                         QOS_PARAM_FLG_UPDATE_EDCA_MSK;
634
635         if (priv->current_ht_config.is_ht)
636                 priv->qos_data.def_qos_parm.qos_flags |= QOS_PARAM_FLG_TGN_MSK;
637
638         if (force || iwl_is_associated(priv)) {
639                 IWL_DEBUG_QOS("send QoS cmd with Qos active=%d FLAGS=0x%X\n",
640                                 priv->qos_data.qos_active,
641                                 priv->qos_data.def_qos_parm.qos_flags);
642
643                 iwl_send_cmd_pdu_async(priv, REPLY_QOS_PARAM,
644                                        sizeof(struct iwl_qosparam_cmd),
645                                        &priv->qos_data.def_qos_parm, NULL);
646         }
647 }
648
649 #define MAX_UCODE_BEACON_INTERVAL       4096
650
651 static u16 iwl_adjust_beacon_interval(u16 beacon_val)
652 {
653         u16 new_val = 0;
654         u16 beacon_factor = 0;
655
656         beacon_factor = (beacon_val + MAX_UCODE_BEACON_INTERVAL)
657                                         / MAX_UCODE_BEACON_INTERVAL;
658         new_val = beacon_val / beacon_factor;
659
660         return new_val;
661 }
662
663 static void iwl_setup_rxon_timing(struct iwl_priv *priv)
664 {
665         u64 tsf;
666         s32 interval_tm, rem;
667         unsigned long flags;
668         struct ieee80211_conf *conf = NULL;
669         u16 beacon_int = 0;
670
671         conf = ieee80211_get_hw_conf(priv->hw);
672
673         spin_lock_irqsave(&priv->lock, flags);
674         priv->rxon_timing.timestamp = cpu_to_le64(priv->timestamp);
675         priv->rxon_timing.listen_interval = cpu_to_le16(conf->listen_interval);
676
677         if (priv->iw_mode == NL80211_IFTYPE_STATION) {
678                 beacon_int = iwl_adjust_beacon_interval(priv->beacon_int);
679                 priv->rxon_timing.atim_window = 0;
680         } else {
681                 beacon_int = iwl_adjust_beacon_interval(conf->beacon_int);
682
683                 /* TODO: we need to get atim_window from upper stack
684                  * for now we set to 0 */
685                 priv->rxon_timing.atim_window = 0;
686         }
687
688         priv->rxon_timing.beacon_interval = cpu_to_le16(beacon_int);
689
690         tsf = priv->timestamp; /* tsf is modifed by do_div: copy it */
691         interval_tm = beacon_int * 1024;
692         rem = do_div(tsf, interval_tm);
693         priv->rxon_timing.beacon_init_val = cpu_to_le32(interval_tm - rem);
694
695         spin_unlock_irqrestore(&priv->lock, flags);
696         IWL_DEBUG_ASSOC("beacon interval %d beacon timer %d beacon tim %d\n",
697                         le16_to_cpu(priv->rxon_timing.beacon_interval),
698                         le32_to_cpu(priv->rxon_timing.beacon_init_val),
699                         le16_to_cpu(priv->rxon_timing.atim_window));
700 }
701
702 static void iwl_set_flags_for_band(struct iwl_priv *priv,
703                                    enum ieee80211_band band)
704 {
705         if (band == IEEE80211_BAND_5GHZ) {
706                 priv->staging_rxon.flags &=
707                     ~(RXON_FLG_BAND_24G_MSK | RXON_FLG_AUTO_DETECT_MSK
708                       | RXON_FLG_CCK_MSK);
709                 priv->staging_rxon.flags |= RXON_FLG_SHORT_SLOT_MSK;
710         } else {
711                 /* Copied from iwl4965_post_associate() */
712                 if (priv->assoc_capability & WLAN_CAPABILITY_SHORT_SLOT_TIME)
713                         priv->staging_rxon.flags |= RXON_FLG_SHORT_SLOT_MSK;
714                 else
715                         priv->staging_rxon.flags &= ~RXON_FLG_SHORT_SLOT_MSK;
716
717                 if (priv->iw_mode == NL80211_IFTYPE_ADHOC)
718                         priv->staging_rxon.flags &= ~RXON_FLG_SHORT_SLOT_MSK;
719
720                 priv->staging_rxon.flags |= RXON_FLG_BAND_24G_MSK;
721                 priv->staging_rxon.flags |= RXON_FLG_AUTO_DETECT_MSK;
722                 priv->staging_rxon.flags &= ~RXON_FLG_CCK_MSK;
723         }
724 }
725
726 /*
727  * initialize rxon structure with default values from eeprom
728  */
729 static void iwl4965_connection_init_rx_config(struct iwl_priv *priv)
730 {
731         const struct iwl_channel_info *ch_info;
732
733         memset(&priv->staging_rxon, 0, sizeof(priv->staging_rxon));
734
735         switch (priv->iw_mode) {
736         case NL80211_IFTYPE_AP:
737                 priv->staging_rxon.dev_type = RXON_DEV_TYPE_AP;
738                 break;
739
740         case NL80211_IFTYPE_STATION:
741                 priv->staging_rxon.dev_type = RXON_DEV_TYPE_ESS;
742                 priv->staging_rxon.filter_flags = RXON_FILTER_ACCEPT_GRP_MSK;
743                 break;
744
745         case NL80211_IFTYPE_ADHOC:
746                 priv->staging_rxon.dev_type = RXON_DEV_TYPE_IBSS;
747                 priv->staging_rxon.flags = RXON_FLG_SHORT_PREAMBLE_MSK;
748                 priv->staging_rxon.filter_flags = RXON_FILTER_BCON_AWARE_MSK |
749                                                   RXON_FILTER_ACCEPT_GRP_MSK;
750                 break;
751
752         case NL80211_IFTYPE_MONITOR:
753                 priv->staging_rxon.dev_type = RXON_DEV_TYPE_SNIFFER;
754                 priv->staging_rxon.filter_flags = RXON_FILTER_PROMISC_MSK |
755                     RXON_FILTER_CTL2HOST_MSK | RXON_FILTER_ACCEPT_GRP_MSK;
756                 break;
757         default:
758                 IWL_ERROR("Unsupported interface type %d\n", priv->iw_mode);
759                 break;
760         }
761
762 #if 0
763         /* TODO:  Figure out when short_preamble would be set and cache from
764          * that */
765         if (!hw_to_local(priv->hw)->short_preamble)
766                 priv->staging_rxon.flags &= ~RXON_FLG_SHORT_PREAMBLE_MSK;
767         else
768                 priv->staging_rxon.flags |= RXON_FLG_SHORT_PREAMBLE_MSK;
769 #endif
770
771         ch_info = iwl_get_channel_info(priv, priv->band,
772                                        le16_to_cpu(priv->active_rxon.channel));
773
774         if (!ch_info)
775                 ch_info = &priv->channel_info[0];
776
777         /*
778          * in some case A channels are all non IBSS
779          * in this case force B/G channel
780          */
781         if ((priv->iw_mode == NL80211_IFTYPE_ADHOC) &&
782             !(is_channel_ibss(ch_info)))
783                 ch_info = &priv->channel_info[0];
784
785         priv->staging_rxon.channel = cpu_to_le16(ch_info->channel);
786         priv->band = ch_info->band;
787
788         iwl_set_flags_for_band(priv, priv->band);
789
790         priv->staging_rxon.ofdm_basic_rates =
791             (IWL_OFDM_RATES_MASK >> IWL_FIRST_OFDM_RATE) & 0xFF;
792         priv->staging_rxon.cck_basic_rates =
793             (IWL_CCK_RATES_MASK >> IWL_FIRST_CCK_RATE) & 0xF;
794
795         priv->staging_rxon.flags &= ~(RXON_FLG_CHANNEL_MODE_MIXED_MSK |
796                                         RXON_FLG_CHANNEL_MODE_PURE_40_MSK);
797         memcpy(priv->staging_rxon.node_addr, priv->mac_addr, ETH_ALEN);
798         memcpy(priv->staging_rxon.wlap_bssid_addr, priv->mac_addr, ETH_ALEN);
799         priv->staging_rxon.ofdm_ht_single_stream_basic_rates = 0xff;
800         priv->staging_rxon.ofdm_ht_dual_stream_basic_rates = 0xff;
801         iwl_set_rxon_chain(priv);
802 }
803
804 static int iwl4965_set_mode(struct iwl_priv *priv, int mode)
805 {
806         priv->iw_mode = mode;
807
808         iwl4965_connection_init_rx_config(priv);
809         memcpy(priv->staging_rxon.node_addr, priv->mac_addr, ETH_ALEN);
810
811         iwl_clear_stations_table(priv);
812
813         /* dont commit rxon if rf-kill is on*/
814         if (!iwl_is_ready_rf(priv))
815                 return -EAGAIN;
816
817         cancel_delayed_work(&priv->scan_check);
818         if (iwl_scan_cancel_timeout(priv, 100)) {
819                 IWL_WARNING("Aborted scan still in progress after 100ms\n");
820                 IWL_DEBUG_MAC80211("leaving - scan abort failed.\n");
821                 return -EAGAIN;
822         }
823
824         iwl4965_commit_rxon(priv);
825
826         return 0;
827 }
828
829 static void iwl4965_set_rate(struct iwl_priv *priv)
830 {
831         const struct ieee80211_supported_band *hw = NULL;
832         struct ieee80211_rate *rate;
833         int i;
834
835         hw = iwl_get_hw_mode(priv, priv->band);
836         if (!hw) {
837                 IWL_ERROR("Failed to set rate: unable to get hw mode\n");
838                 return;
839         }
840
841         priv->active_rate = 0;
842         priv->active_rate_basic = 0;
843
844         for (i = 0; i < hw->n_bitrates; i++) {
845                 rate = &(hw->bitrates[i]);
846                 if (rate->hw_value < IWL_RATE_COUNT)
847                         priv->active_rate |= (1 << rate->hw_value);
848         }
849
850         IWL_DEBUG_RATE("Set active_rate = %0x, active_rate_basic = %0x\n",
851                        priv->active_rate, priv->active_rate_basic);
852
853         /*
854          * If a basic rate is configured, then use it (adding IWL_RATE_1M_MASK)
855          * otherwise set it to the default of all CCK rates and 6, 12, 24 for
856          * OFDM
857          */
858         if (priv->active_rate_basic & IWL_CCK_BASIC_RATES_MASK)
859                 priv->staging_rxon.cck_basic_rates =
860                     ((priv->active_rate_basic &
861                       IWL_CCK_RATES_MASK) >> IWL_FIRST_CCK_RATE) & 0xF;
862         else
863                 priv->staging_rxon.cck_basic_rates =
864                     (IWL_CCK_BASIC_RATES_MASK >> IWL_FIRST_CCK_RATE) & 0xF;
865
866         if (priv->active_rate_basic & IWL_OFDM_BASIC_RATES_MASK)
867                 priv->staging_rxon.ofdm_basic_rates =
868                     ((priv->active_rate_basic &
869                       (IWL_OFDM_BASIC_RATES_MASK | IWL_RATE_6M_MASK)) >>
870                       IWL_FIRST_OFDM_RATE) & 0xFF;
871         else
872                 priv->staging_rxon.ofdm_basic_rates =
873                    (IWL_OFDM_BASIC_RATES_MASK >> IWL_FIRST_OFDM_RATE) & 0xFF;
874 }
875
876 #ifdef CONFIG_IWLAGN_SPECTRUM_MEASUREMENT
877
878 #include "iwl-spectrum.h"
879
880 #define BEACON_TIME_MASK_LOW    0x00FFFFFF
881 #define BEACON_TIME_MASK_HIGH   0xFF000000
882 #define TIME_UNIT               1024
883
884 /*
885  * extended beacon time format
886  * time in usec will be changed into a 32-bit value in 8:24 format
887  * the high 1 byte is the beacon counts
888  * the lower 3 bytes is the time in usec within one beacon interval
889  */
890
891 static u32 iwl4965_usecs_to_beacons(u32 usec, u32 beacon_interval)
892 {
893         u32 quot;
894         u32 rem;
895         u32 interval = beacon_interval * 1024;
896
897         if (!interval || !usec)
898                 return 0;
899
900         quot = (usec / interval) & (BEACON_TIME_MASK_HIGH >> 24);
901         rem = (usec % interval) & BEACON_TIME_MASK_LOW;
902
903         return (quot << 24) + rem;
904 }
905
906 /* base is usually what we get from ucode with each received frame,
907  * the same as HW timer counter counting down
908  */
909
910 static __le32 iwl4965_add_beacon_time(u32 base, u32 addon, u32 beacon_interval)
911 {
912         u32 base_low = base & BEACON_TIME_MASK_LOW;
913         u32 addon_low = addon & BEACON_TIME_MASK_LOW;
914         u32 interval = beacon_interval * TIME_UNIT;
915         u32 res = (base & BEACON_TIME_MASK_HIGH) +
916             (addon & BEACON_TIME_MASK_HIGH);
917
918         if (base_low > addon_low)
919                 res += base_low - addon_low;
920         else if (base_low < addon_low) {
921                 res += interval + base_low - addon_low;
922                 res += (1 << 24);
923         } else
924                 res += (1 << 24);
925
926         return cpu_to_le32(res);
927 }
928
929 static int iwl4965_get_measurement(struct iwl_priv *priv,
930                                struct ieee80211_measurement_params *params,
931                                u8 type)
932 {
933         struct iwl4965_spectrum_cmd spectrum;
934         struct iwl_rx_packet *res;
935         struct iwl_host_cmd cmd = {
936                 .id = REPLY_SPECTRUM_MEASUREMENT_CMD,
937                 .data = (void *)&spectrum,
938                 .meta.flags = CMD_WANT_SKB,
939         };
940         u32 add_time = le64_to_cpu(params->start_time);
941         int rc;
942         int spectrum_resp_status;
943         int duration = le16_to_cpu(params->duration);
944
945         if (iwl_is_associated(priv))
946                 add_time =
947                     iwl4965_usecs_to_beacons(
948                         le64_to_cpu(params->start_time) - priv->last_tsf,
949                         le16_to_cpu(priv->rxon_timing.beacon_interval));
950
951         memset(&spectrum, 0, sizeof(spectrum));
952
953         spectrum.channel_count = cpu_to_le16(1);
954         spectrum.flags =
955             RXON_FLG_TSF2HOST_MSK | RXON_FLG_ANT_A_MSK | RXON_FLG_DIS_DIV_MSK;
956         spectrum.filter_flags = MEASUREMENT_FILTER_FLAG;
957         cmd.len = sizeof(spectrum);
958         spectrum.len = cpu_to_le16(cmd.len - sizeof(spectrum.len));
959
960         if (iwl_is_associated(priv))
961                 spectrum.start_time =
962                     iwl4965_add_beacon_time(priv->last_beacon_time,
963                                 add_time,
964                                 le16_to_cpu(priv->rxon_timing.beacon_interval));
965         else
966                 spectrum.start_time = 0;
967
968         spectrum.channels[0].duration = cpu_to_le32(duration * TIME_UNIT);
969         spectrum.channels[0].channel = params->channel;
970         spectrum.channels[0].type = type;
971         if (priv->active_rxon.flags & RXON_FLG_BAND_24G_MSK)
972                 spectrum.flags |= RXON_FLG_BAND_24G_MSK |
973                     RXON_FLG_AUTO_DETECT_MSK | RXON_FLG_TGG_PROTECT_MSK;
974
975         rc = iwl_send_cmd_sync(priv, &cmd);
976         if (rc)
977                 return rc;
978
979         res = (struct iwl_rx_packet *)cmd.meta.u.skb->data;
980         if (res->hdr.flags & IWL_CMD_FAILED_MSK) {
981                 IWL_ERROR("Bad return from REPLY_RX_ON_ASSOC command\n");
982                 rc = -EIO;
983         }
984
985         spectrum_resp_status = le16_to_cpu(res->u.spectrum.status);
986         switch (spectrum_resp_status) {
987         case 0:         /* Command will be handled */
988                 if (res->u.spectrum.id != 0xff) {
989                         IWL_DEBUG_INFO
990                             ("Replaced existing measurement: %d\n",
991                              res->u.spectrum.id);
992                         priv->measurement_status &= ~MEASUREMENT_READY;
993                 }
994                 priv->measurement_status |= MEASUREMENT_ACTIVE;
995                 rc = 0;
996                 break;
997
998         case 1:         /* Command will not be handled */
999                 rc = -EAGAIN;
1000                 break;
1001         }
1002
1003         dev_kfree_skb_any(cmd.meta.u.skb);
1004
1005         return rc;
1006 }
1007 #endif
1008
1009 /******************************************************************************
1010  *
1011  * Generic RX handler implementations
1012  *
1013  ******************************************************************************/
1014 static void iwl_rx_reply_alive(struct iwl_priv *priv,
1015                                 struct iwl_rx_mem_buffer *rxb)
1016 {
1017         struct iwl_rx_packet *pkt = (struct iwl_rx_packet *)rxb->skb->data;
1018         struct iwl_alive_resp *palive;
1019         struct delayed_work *pwork;
1020
1021         palive = &pkt->u.alive_frame;
1022
1023         IWL_DEBUG_INFO("Alive ucode status 0x%08X revision "
1024                        "0x%01X 0x%01X\n",
1025                        palive->is_valid, palive->ver_type,
1026                        palive->ver_subtype);
1027
1028         if (palive->ver_subtype == INITIALIZE_SUBTYPE) {
1029                 IWL_DEBUG_INFO("Initialization Alive received.\n");
1030                 memcpy(&priv->card_alive_init,
1031                        &pkt->u.alive_frame,
1032                        sizeof(struct iwl_init_alive_resp));
1033                 pwork = &priv->init_alive_start;
1034         } else {
1035                 IWL_DEBUG_INFO("Runtime Alive received.\n");
1036                 memcpy(&priv->card_alive, &pkt->u.alive_frame,
1037                        sizeof(struct iwl_alive_resp));
1038                 pwork = &priv->alive_start;
1039         }
1040
1041         /* We delay the ALIVE response by 5ms to
1042          * give the HW RF Kill time to activate... */
1043         if (palive->is_valid == UCODE_VALID_OK)
1044                 queue_delayed_work(priv->workqueue, pwork,
1045                                    msecs_to_jiffies(5));
1046         else
1047                 IWL_WARNING("uCode did not respond OK.\n");
1048 }
1049
1050 static void iwl4965_rx_reply_error(struct iwl_priv *priv,
1051                                    struct iwl_rx_mem_buffer *rxb)
1052 {
1053         struct iwl_rx_packet *pkt = (struct iwl_rx_packet *)rxb->skb->data;
1054
1055         IWL_ERROR("Error Reply type 0x%08X cmd %s (0x%02X) "
1056                 "seq 0x%04X ser 0x%08X\n",
1057                 le32_to_cpu(pkt->u.err_resp.error_type),
1058                 get_cmd_string(pkt->u.err_resp.cmd_id),
1059                 pkt->u.err_resp.cmd_id,
1060                 le16_to_cpu(pkt->u.err_resp.bad_cmd_seq_num),
1061                 le32_to_cpu(pkt->u.err_resp.error_info));
1062 }
1063
1064 #define TX_STATUS_ENTRY(x) case TX_STATUS_FAIL_ ## x: return #x
1065
1066 static void iwl4965_rx_csa(struct iwl_priv *priv, struct iwl_rx_mem_buffer *rxb)
1067 {
1068         struct iwl_rx_packet *pkt = (struct iwl_rx_packet *)rxb->skb->data;
1069         struct iwl_rxon_cmd *rxon = (void *)&priv->active_rxon;
1070         struct iwl4965_csa_notification *csa = &(pkt->u.csa_notif);
1071         IWL_DEBUG_11H("CSA notif: channel %d, status %d\n",
1072                       le16_to_cpu(csa->channel), le32_to_cpu(csa->status));
1073         rxon->channel = csa->channel;
1074         priv->staging_rxon.channel = csa->channel;
1075 }
1076
1077 static void iwl4965_rx_spectrum_measure_notif(struct iwl_priv *priv,
1078                                           struct iwl_rx_mem_buffer *rxb)
1079 {
1080 #ifdef CONFIG_IWLAGN_SPECTRUM_MEASUREMENT
1081         struct iwl_rx_packet *pkt = (struct iwl_rx_packet *)rxb->skb->data;
1082         struct iwl4965_spectrum_notification *report = &(pkt->u.spectrum_notif);
1083
1084         if (!report->state) {
1085                 IWL_DEBUG(IWL_DL_11H,
1086                         "Spectrum Measure Notification: Start\n");
1087                 return;
1088         }
1089
1090         memcpy(&priv->measure_report, report, sizeof(*report));
1091         priv->measurement_status |= MEASUREMENT_READY;
1092 #endif
1093 }
1094
1095 static void iwl4965_rx_pm_sleep_notif(struct iwl_priv *priv,
1096                                       struct iwl_rx_mem_buffer *rxb)
1097 {
1098 #ifdef CONFIG_IWLWIFI_DEBUG
1099         struct iwl_rx_packet *pkt = (struct iwl_rx_packet *)rxb->skb->data;
1100         struct iwl4965_sleep_notification *sleep = &(pkt->u.sleep_notif);
1101         IWL_DEBUG_RX("sleep mode: %d, src: %d\n",
1102                      sleep->pm_sleep_mode, sleep->pm_wakeup_src);
1103 #endif
1104 }
1105
1106 static void iwl4965_rx_pm_debug_statistics_notif(struct iwl_priv *priv,
1107                                              struct iwl_rx_mem_buffer *rxb)
1108 {
1109         struct iwl_rx_packet *pkt = (struct iwl_rx_packet *)rxb->skb->data;
1110         IWL_DEBUG_RADIO("Dumping %d bytes of unhandled "
1111                         "notification for %s:\n",
1112                         le32_to_cpu(pkt->len), get_cmd_string(pkt->hdr.cmd));
1113         iwl_print_hex_dump(priv, IWL_DL_RADIO, pkt->u.raw, le32_to_cpu(pkt->len));
1114 }
1115
1116 static void iwl4965_bg_beacon_update(struct work_struct *work)
1117 {
1118         struct iwl_priv *priv =
1119                 container_of(work, struct iwl_priv, beacon_update);
1120         struct sk_buff *beacon;
1121
1122         /* Pull updated AP beacon from mac80211. will fail if not in AP mode */
1123         beacon = ieee80211_beacon_get(priv->hw, priv->vif);
1124
1125         if (!beacon) {
1126                 IWL_ERROR("update beacon failed\n");
1127                 return;
1128         }
1129
1130         mutex_lock(&priv->mutex);
1131         /* new beacon skb is allocated every time; dispose previous.*/
1132         if (priv->ibss_beacon)
1133                 dev_kfree_skb(priv->ibss_beacon);
1134
1135         priv->ibss_beacon = beacon;
1136         mutex_unlock(&priv->mutex);
1137
1138         iwl4965_send_beacon_cmd(priv);
1139 }
1140
1141 /**
1142  * iwl4965_bg_statistics_periodic - Timer callback to queue statistics
1143  *
1144  * This callback is provided in order to send a statistics request.
1145  *
1146  * This timer function is continually reset to execute within
1147  * REG_RECALIB_PERIOD seconds since the last STATISTICS_NOTIFICATION
1148  * was received.  We need to ensure we receive the statistics in order
1149  * to update the temperature used for calibrating the TXPOWER.
1150  */
1151 static void iwl4965_bg_statistics_periodic(unsigned long data)
1152 {
1153         struct iwl_priv *priv = (struct iwl_priv *)data;
1154
1155         if (test_bit(STATUS_EXIT_PENDING, &priv->status))
1156                 return;
1157
1158         iwl_send_statistics_request(priv, CMD_ASYNC);
1159 }
1160
1161 static void iwl4965_rx_beacon_notif(struct iwl_priv *priv,
1162                                 struct iwl_rx_mem_buffer *rxb)
1163 {
1164 #ifdef CONFIG_IWLWIFI_DEBUG
1165         struct iwl_rx_packet *pkt = (struct iwl_rx_packet *)rxb->skb->data;
1166         struct iwl4965_beacon_notif *beacon = &(pkt->u.beacon_status);
1167         u8 rate = iwl_hw_get_rate(beacon->beacon_notify_hdr.rate_n_flags);
1168
1169         IWL_DEBUG_RX("beacon status %x retries %d iss %d "
1170                 "tsf %d %d rate %d\n",
1171                 le32_to_cpu(beacon->beacon_notify_hdr.u.status) & TX_STATUS_MSK,
1172                 beacon->beacon_notify_hdr.failure_frame,
1173                 le32_to_cpu(beacon->ibss_mgr_status),
1174                 le32_to_cpu(beacon->high_tsf),
1175                 le32_to_cpu(beacon->low_tsf), rate);
1176 #endif
1177
1178         if ((priv->iw_mode == NL80211_IFTYPE_AP) &&
1179             (!test_bit(STATUS_EXIT_PENDING, &priv->status)))
1180                 queue_work(priv->workqueue, &priv->beacon_update);
1181 }
1182
1183 /* Handle notification from uCode that card's power state is changing
1184  * due to software, hardware, or critical temperature RFKILL */
1185 static void iwl4965_rx_card_state_notif(struct iwl_priv *priv,
1186                                     struct iwl_rx_mem_buffer *rxb)
1187 {
1188         struct iwl_rx_packet *pkt = (struct iwl_rx_packet *)rxb->skb->data;
1189         u32 flags = le32_to_cpu(pkt->u.card_state_notif.flags);
1190         unsigned long status = priv->status;
1191
1192         IWL_DEBUG_RF_KILL("Card state received: HW:%s SW:%s\n",
1193                           (flags & HW_CARD_DISABLED) ? "Kill" : "On",
1194                           (flags & SW_CARD_DISABLED) ? "Kill" : "On");
1195
1196         if (flags & (SW_CARD_DISABLED | HW_CARD_DISABLED |
1197                      RF_CARD_DISABLED)) {
1198
1199                 iwl_write32(priv, CSR_UCODE_DRV_GP1_SET,
1200                             CSR_UCODE_DRV_GP1_BIT_CMD_BLOCKED);
1201
1202                 if (!iwl_grab_nic_access(priv)) {
1203                         iwl_write_direct32(
1204                                 priv, HBUS_TARG_MBX_C,
1205                                 HBUS_TARG_MBX_C_REG_BIT_CMD_BLOCKED);
1206
1207                         iwl_release_nic_access(priv);
1208                 }
1209
1210                 if (!(flags & RXON_CARD_DISABLED)) {
1211                         iwl_write32(priv, CSR_UCODE_DRV_GP1_CLR,
1212                                     CSR_UCODE_DRV_GP1_BIT_CMD_BLOCKED);
1213                         if (!iwl_grab_nic_access(priv)) {
1214                                 iwl_write_direct32(
1215                                         priv, HBUS_TARG_MBX_C,
1216                                         HBUS_TARG_MBX_C_REG_BIT_CMD_BLOCKED);
1217
1218                                 iwl_release_nic_access(priv);
1219                         }
1220                 }
1221
1222                 if (flags & RF_CARD_DISABLED) {
1223                         iwl_write32(priv, CSR_UCODE_DRV_GP1_SET,
1224                                     CSR_UCODE_DRV_GP1_REG_BIT_CT_KILL_EXIT);
1225                         iwl_read32(priv, CSR_UCODE_DRV_GP1);
1226                         if (!iwl_grab_nic_access(priv))
1227                                 iwl_release_nic_access(priv);
1228                 }
1229         }
1230
1231         if (flags & HW_CARD_DISABLED)
1232                 set_bit(STATUS_RF_KILL_HW, &priv->status);
1233         else
1234                 clear_bit(STATUS_RF_KILL_HW, &priv->status);
1235
1236
1237         if (flags & SW_CARD_DISABLED)
1238                 set_bit(STATUS_RF_KILL_SW, &priv->status);
1239         else
1240                 clear_bit(STATUS_RF_KILL_SW, &priv->status);
1241
1242         if (!(flags & RXON_CARD_DISABLED))
1243                 iwl_scan_cancel(priv);
1244
1245         if ((test_bit(STATUS_RF_KILL_HW, &status) !=
1246              test_bit(STATUS_RF_KILL_HW, &priv->status)) ||
1247             (test_bit(STATUS_RF_KILL_SW, &status) !=
1248              test_bit(STATUS_RF_KILL_SW, &priv->status)))
1249                 queue_work(priv->workqueue, &priv->rf_kill);
1250         else
1251                 wake_up_interruptible(&priv->wait_command_queue);
1252 }
1253
1254 int iwl4965_set_pwr_src(struct iwl_priv *priv, enum iwl_pwr_src src)
1255 {
1256         int ret;
1257         unsigned long flags;
1258
1259         spin_lock_irqsave(&priv->lock, flags);
1260         ret = iwl_grab_nic_access(priv);
1261         if (ret)
1262                 goto err;
1263
1264         if (src == IWL_PWR_SRC_VAUX) {
1265                 u32 val;
1266                 ret = pci_read_config_dword(priv->pci_dev, PCI_CFG_POWER_SOURCE,
1267                                             &val);
1268
1269                 if (val & PCI_CFG_PMC_PME_FROM_D3COLD_SUPPORT)
1270                         iwl_set_bits_mask_prph(priv, APMG_PS_CTRL_REG,
1271                                                APMG_PS_CTRL_VAL_PWR_SRC_VAUX,
1272                                                ~APMG_PS_CTRL_MSK_PWR_SRC);
1273         } else {
1274                 iwl_set_bits_mask_prph(priv, APMG_PS_CTRL_REG,
1275                                        APMG_PS_CTRL_VAL_PWR_SRC_VMAIN,
1276                                        ~APMG_PS_CTRL_MSK_PWR_SRC);
1277         }
1278
1279         iwl_release_nic_access(priv);
1280 err:
1281         spin_unlock_irqrestore(&priv->lock, flags);
1282         return ret;
1283 }
1284
1285 /**
1286  * iwl4965_setup_rx_handlers - Initialize Rx handler callbacks
1287  *
1288  * Setup the RX handlers for each of the reply types sent from the uCode
1289  * to the host.
1290  *
1291  * This function chains into the hardware specific files for them to setup
1292  * any hardware specific handlers as well.
1293  */
1294 static void iwl_setup_rx_handlers(struct iwl_priv *priv)
1295 {
1296         priv->rx_handlers[REPLY_ALIVE] = iwl_rx_reply_alive;
1297         priv->rx_handlers[REPLY_ERROR] = iwl4965_rx_reply_error;
1298         priv->rx_handlers[CHANNEL_SWITCH_NOTIFICATION] = iwl4965_rx_csa;
1299         priv->rx_handlers[SPECTRUM_MEASURE_NOTIFICATION] =
1300             iwl4965_rx_spectrum_measure_notif;
1301         priv->rx_handlers[PM_SLEEP_NOTIFICATION] = iwl4965_rx_pm_sleep_notif;
1302         priv->rx_handlers[PM_DEBUG_STATISTIC_NOTIFIC] =
1303             iwl4965_rx_pm_debug_statistics_notif;
1304         priv->rx_handlers[BEACON_NOTIFICATION] = iwl4965_rx_beacon_notif;
1305
1306         /*
1307          * The same handler is used for both the REPLY to a discrete
1308          * statistics request from the host as well as for the periodic
1309          * statistics notifications (after received beacons) from the uCode.
1310          */
1311         priv->rx_handlers[REPLY_STATISTICS_CMD] = iwl_rx_statistics;
1312         priv->rx_handlers[STATISTICS_NOTIFICATION] = iwl_rx_statistics;
1313
1314         iwl_setup_rx_scan_handlers(priv);
1315
1316         /* status change handler */
1317         priv->rx_handlers[CARD_STATE_NOTIFICATION] = iwl4965_rx_card_state_notif;
1318
1319         priv->rx_handlers[MISSED_BEACONS_NOTIFICATION] =
1320             iwl_rx_missed_beacon_notif;
1321         /* Rx handlers */
1322         priv->rx_handlers[REPLY_RX_PHY_CMD] = iwl_rx_reply_rx_phy;
1323         priv->rx_handlers[REPLY_RX_MPDU_CMD] = iwl_rx_reply_rx;
1324         /* block ack */
1325         priv->rx_handlers[REPLY_COMPRESSED_BA] = iwl_rx_reply_compressed_ba;
1326         /* Set up hardware specific Rx handlers */
1327         priv->cfg->ops->lib->rx_handler_setup(priv);
1328 }
1329
1330 /*
1331  * this should be called while priv->lock is locked
1332 */
1333 static void __iwl_rx_replenish(struct iwl_priv *priv)
1334 {
1335         iwl_rx_allocate(priv);
1336         iwl_rx_queue_restock(priv);
1337 }
1338
1339
1340 /**
1341  * iwl_rx_handle - Main entry function for receiving responses from uCode
1342  *
1343  * Uses the priv->rx_handlers callback function array to invoke
1344  * the appropriate handlers, including command responses,
1345  * frame-received notifications, and other notifications.
1346  */
1347 void iwl_rx_handle(struct iwl_priv *priv)
1348 {
1349         struct iwl_rx_mem_buffer *rxb;
1350         struct iwl_rx_packet *pkt;
1351         struct iwl_rx_queue *rxq = &priv->rxq;
1352         u32 r, i;
1353         int reclaim;
1354         unsigned long flags;
1355         u8 fill_rx = 0;
1356         u32 count = 8;
1357
1358         /* uCode's read index (stored in shared DRAM) indicates the last Rx
1359          * buffer that the driver may process (last buffer filled by ucode). */
1360         r = priv->cfg->ops->lib->shared_mem_rx_idx(priv);
1361         i = rxq->read;
1362
1363         /* Rx interrupt, but nothing sent from uCode */
1364         if (i == r)
1365                 IWL_DEBUG(IWL_DL_RX, "r = %d, i = %d\n", r, i);
1366
1367         if (iwl_rx_queue_space(rxq) > (RX_QUEUE_SIZE / 2))
1368                 fill_rx = 1;
1369
1370         while (i != r) {
1371                 rxb = rxq->queue[i];
1372
1373                 /* If an RXB doesn't have a Rx queue slot associated with it,
1374                  * then a bug has been introduced in the queue refilling
1375                  * routines -- catch it here */
1376                 BUG_ON(rxb == NULL);
1377
1378                 rxq->queue[i] = NULL;
1379
1380                 pci_dma_sync_single_for_cpu(priv->pci_dev, rxb->dma_addr,
1381                                             priv->hw_params.rx_buf_size,
1382                                             PCI_DMA_FROMDEVICE);
1383                 pkt = (struct iwl_rx_packet *)rxb->skb->data;
1384
1385                 /* Reclaim a command buffer only if this packet is a response
1386                  *   to a (driver-originated) command.
1387                  * If the packet (e.g. Rx frame) originated from uCode,
1388                  *   there is no command buffer to reclaim.
1389                  * Ucode should set SEQ_RX_FRAME bit if ucode-originated,
1390                  *   but apparently a few don't get set; catch them here. */
1391                 reclaim = !(pkt->hdr.sequence & SEQ_RX_FRAME) &&
1392                         (pkt->hdr.cmd != REPLY_RX_PHY_CMD) &&
1393                         (pkt->hdr.cmd != REPLY_RX) &&
1394                         (pkt->hdr.cmd != REPLY_COMPRESSED_BA) &&
1395                         (pkt->hdr.cmd != STATISTICS_NOTIFICATION) &&
1396                         (pkt->hdr.cmd != REPLY_TX);
1397
1398                 /* Based on type of command response or notification,
1399                  *   handle those that need handling via function in
1400                  *   rx_handlers table.  See iwl4965_setup_rx_handlers() */
1401                 if (priv->rx_handlers[pkt->hdr.cmd]) {
1402                         IWL_DEBUG(IWL_DL_RX, "r = %d, i = %d, %s, 0x%02x\n", r,
1403                                 i, get_cmd_string(pkt->hdr.cmd), pkt->hdr.cmd);
1404                         priv->rx_handlers[pkt->hdr.cmd] (priv, rxb);
1405                 } else {
1406                         /* No handling needed */
1407                         IWL_DEBUG(IWL_DL_RX,
1408                                 "r %d i %d No handler needed for %s, 0x%02x\n",
1409                                 r, i, get_cmd_string(pkt->hdr.cmd),
1410                                 pkt->hdr.cmd);
1411                 }
1412
1413                 if (reclaim) {
1414                         /* Invoke any callbacks, transfer the skb to caller, and
1415                          * fire off the (possibly) blocking iwl_send_cmd()
1416                          * as we reclaim the driver command queue */
1417                         if (rxb && rxb->skb)
1418                                 iwl_tx_cmd_complete(priv, rxb);
1419                         else
1420                                 IWL_WARNING("Claim null rxb?\n");
1421                 }
1422
1423                 /* For now we just don't re-use anything.  We can tweak this
1424                  * later to try and re-use notification packets and SKBs that
1425                  * fail to Rx correctly */
1426                 if (rxb->skb != NULL) {
1427                         priv->alloc_rxb_skb--;
1428                         dev_kfree_skb_any(rxb->skb);
1429                         rxb->skb = NULL;
1430                 }
1431
1432                 pci_unmap_single(priv->pci_dev, rxb->dma_addr,
1433                                  priv->hw_params.rx_buf_size,
1434                                  PCI_DMA_FROMDEVICE);
1435                 spin_lock_irqsave(&rxq->lock, flags);
1436                 list_add_tail(&rxb->list, &priv->rxq.rx_used);
1437                 spin_unlock_irqrestore(&rxq->lock, flags);
1438                 i = (i + 1) & RX_QUEUE_MASK;
1439                 /* If there are a lot of unused frames,
1440                  * restock the Rx queue so ucode wont assert. */
1441                 if (fill_rx) {
1442                         count++;
1443                         if (count >= 8) {
1444                                 priv->rxq.read = i;
1445                                 __iwl_rx_replenish(priv);
1446                                 count = 0;
1447                         }
1448                 }
1449         }
1450
1451         /* Backtrack one entry */
1452         priv->rxq.read = i;
1453         iwl_rx_queue_restock(priv);
1454 }
1455
1456 #ifdef CONFIG_IWLWIFI_DEBUG
1457 static void iwl4965_print_rx_config_cmd(struct iwl_priv *priv)
1458 {
1459         struct iwl_rxon_cmd *rxon = &priv->staging_rxon;
1460
1461         IWL_DEBUG_RADIO("RX CONFIG:\n");
1462         iwl_print_hex_dump(priv, IWL_DL_RADIO, (u8 *) rxon, sizeof(*rxon));
1463         IWL_DEBUG_RADIO("u16 channel: 0x%x\n", le16_to_cpu(rxon->channel));
1464         IWL_DEBUG_RADIO("u32 flags: 0x%08X\n", le32_to_cpu(rxon->flags));
1465         IWL_DEBUG_RADIO("u32 filter_flags: 0x%08x\n",
1466                         le32_to_cpu(rxon->filter_flags));
1467         IWL_DEBUG_RADIO("u8 dev_type: 0x%x\n", rxon->dev_type);
1468         IWL_DEBUG_RADIO("u8 ofdm_basic_rates: 0x%02x\n",
1469                         rxon->ofdm_basic_rates);
1470         IWL_DEBUG_RADIO("u8 cck_basic_rates: 0x%02x\n", rxon->cck_basic_rates);
1471         IWL_DEBUG_RADIO("u8[6] node_addr: %pM\n", rxon->node_addr);
1472         IWL_DEBUG_RADIO("u8[6] bssid_addr: %pM\n", rxon->bssid_addr);
1473         IWL_DEBUG_RADIO("u16 assoc_id: 0x%x\n", le16_to_cpu(rxon->assoc_id));
1474 }
1475 #endif
1476
1477 static void iwl4965_enable_interrupts(struct iwl_priv *priv)
1478 {
1479         IWL_DEBUG_ISR("Enabling interrupts\n");
1480         set_bit(STATUS_INT_ENABLED, &priv->status);
1481         iwl_write32(priv, CSR_INT_MASK, CSR_INI_SET_MASK);
1482 }
1483
1484 /* call this function to flush any scheduled tasklet */
1485 static inline void iwl_synchronize_irq(struct iwl_priv *priv)
1486 {
1487         /* wait to make sure we flush pedding tasklet*/
1488         synchronize_irq(priv->pci_dev->irq);
1489         tasklet_kill(&priv->irq_tasklet);
1490 }
1491
1492 static inline void iwl4965_disable_interrupts(struct iwl_priv *priv)
1493 {
1494         clear_bit(STATUS_INT_ENABLED, &priv->status);
1495
1496         /* disable interrupts from uCode/NIC to host */
1497         iwl_write32(priv, CSR_INT_MASK, 0x00000000);
1498
1499         /* acknowledge/clear/reset any interrupts still pending
1500          * from uCode or flow handler (Rx/Tx DMA) */
1501         iwl_write32(priv, CSR_INT, 0xffffffff);
1502         iwl_write32(priv, CSR_FH_INT_STATUS, 0xffffffff);
1503         IWL_DEBUG_ISR("Disabled interrupts\n");
1504 }
1505
1506
1507 /**
1508  * iwl4965_irq_handle_error - called for HW or SW error interrupt from card
1509  */
1510 static void iwl4965_irq_handle_error(struct iwl_priv *priv)
1511 {
1512         /* Set the FW error flag -- cleared on iwl4965_down */
1513         set_bit(STATUS_FW_ERROR, &priv->status);
1514
1515         /* Cancel currently queued command. */
1516         clear_bit(STATUS_HCMD_ACTIVE, &priv->status);
1517
1518 #ifdef CONFIG_IWLWIFI_DEBUG
1519         if (priv->debug_level & IWL_DL_FW_ERRORS) {
1520                 iwl_dump_nic_error_log(priv);
1521                 iwl_dump_nic_event_log(priv);
1522                 iwl4965_print_rx_config_cmd(priv);
1523         }
1524 #endif
1525
1526         wake_up_interruptible(&priv->wait_command_queue);
1527
1528         /* Keep the restart process from trying to send host
1529          * commands by clearing the INIT status bit */
1530         clear_bit(STATUS_READY, &priv->status);
1531
1532         if (!test_bit(STATUS_EXIT_PENDING, &priv->status)) {
1533                 IWL_DEBUG(IWL_DL_FW_ERRORS,
1534                           "Restarting adapter due to uCode error.\n");
1535
1536                 if (iwl_is_associated(priv)) {
1537                         memcpy(&priv->recovery_rxon, &priv->active_rxon,
1538                                sizeof(priv->recovery_rxon));
1539                         priv->error_recovering = 1;
1540                 }
1541                 if (priv->cfg->mod_params->restart_fw)
1542                         queue_work(priv->workqueue, &priv->restart);
1543         }
1544 }
1545
1546 static void iwl4965_error_recovery(struct iwl_priv *priv)
1547 {
1548         unsigned long flags;
1549
1550         memcpy(&priv->staging_rxon, &priv->recovery_rxon,
1551                sizeof(priv->staging_rxon));
1552         priv->staging_rxon.filter_flags &= ~RXON_FILTER_ASSOC_MSK;
1553         iwl4965_commit_rxon(priv);
1554
1555         iwl_rxon_add_station(priv, priv->bssid, 1);
1556
1557         spin_lock_irqsave(&priv->lock, flags);
1558         priv->assoc_id = le16_to_cpu(priv->staging_rxon.assoc_id);
1559         priv->error_recovering = 0;
1560         spin_unlock_irqrestore(&priv->lock, flags);
1561 }
1562
1563 static void iwl4965_irq_tasklet(struct iwl_priv *priv)
1564 {
1565         u32 inta, handled = 0;
1566         u32 inta_fh;
1567         unsigned long flags;
1568 #ifdef CONFIG_IWLWIFI_DEBUG
1569         u32 inta_mask;
1570 #endif
1571
1572         spin_lock_irqsave(&priv->lock, flags);
1573
1574         /* Ack/clear/reset pending uCode interrupts.
1575          * Note:  Some bits in CSR_INT are "OR" of bits in CSR_FH_INT_STATUS,
1576          *  and will clear only when CSR_FH_INT_STATUS gets cleared. */
1577         inta = iwl_read32(priv, CSR_INT);
1578         iwl_write32(priv, CSR_INT, inta);
1579
1580         /* Ack/clear/reset pending flow-handler (DMA) interrupts.
1581          * Any new interrupts that happen after this, either while we're
1582          * in this tasklet, or later, will show up in next ISR/tasklet. */
1583         inta_fh = iwl_read32(priv, CSR_FH_INT_STATUS);
1584         iwl_write32(priv, CSR_FH_INT_STATUS, inta_fh);
1585
1586 #ifdef CONFIG_IWLWIFI_DEBUG
1587         if (priv->debug_level & IWL_DL_ISR) {
1588                 /* just for debug */
1589                 inta_mask = iwl_read32(priv, CSR_INT_MASK);
1590                 IWL_DEBUG_ISR("inta 0x%08x, enabled 0x%08x, fh 0x%08x\n",
1591                               inta, inta_mask, inta_fh);
1592         }
1593 #endif
1594
1595         /* Since CSR_INT and CSR_FH_INT_STATUS reads and clears are not
1596          * atomic, make sure that inta covers all the interrupts that
1597          * we've discovered, even if FH interrupt came in just after
1598          * reading CSR_INT. */
1599         if (inta_fh & CSR49_FH_INT_RX_MASK)
1600                 inta |= CSR_INT_BIT_FH_RX;
1601         if (inta_fh & CSR49_FH_INT_TX_MASK)
1602                 inta |= CSR_INT_BIT_FH_TX;
1603
1604         /* Now service all interrupt bits discovered above. */
1605         if (inta & CSR_INT_BIT_HW_ERR) {
1606                 IWL_ERROR("Microcode HW error detected.  Restarting.\n");
1607
1608                 /* Tell the device to stop sending interrupts */
1609                 iwl4965_disable_interrupts(priv);
1610
1611                 iwl4965_irq_handle_error(priv);
1612
1613                 handled |= CSR_INT_BIT_HW_ERR;
1614
1615                 spin_unlock_irqrestore(&priv->lock, flags);
1616
1617                 return;
1618         }
1619
1620 #ifdef CONFIG_IWLWIFI_DEBUG
1621         if (priv->debug_level & (IWL_DL_ISR)) {
1622                 /* NIC fires this, but we don't use it, redundant with WAKEUP */
1623                 if (inta & CSR_INT_BIT_SCD)
1624                         IWL_DEBUG_ISR("Scheduler finished to transmit "
1625                                       "the frame/frames.\n");
1626
1627                 /* Alive notification via Rx interrupt will do the real work */
1628                 if (inta & CSR_INT_BIT_ALIVE)
1629                         IWL_DEBUG_ISR("Alive interrupt\n");
1630         }
1631 #endif
1632         /* Safely ignore these bits for debug checks below */
1633         inta &= ~(CSR_INT_BIT_SCD | CSR_INT_BIT_ALIVE);
1634
1635         /* HW RF KILL switch toggled */
1636         if (inta & CSR_INT_BIT_RF_KILL) {
1637                 int hw_rf_kill = 0;
1638                 if (!(iwl_read32(priv, CSR_GP_CNTRL) &
1639                                 CSR_GP_CNTRL_REG_FLAG_HW_RF_KILL_SW))
1640                         hw_rf_kill = 1;
1641
1642                 IWL_DEBUG(IWL_DL_RF_KILL, "RF_KILL bit toggled to %s.\n",
1643                                 hw_rf_kill ? "disable radio":"enable radio");
1644
1645                 /* driver only loads ucode once setting the interface up.
1646                  * the driver as well won't allow loading if RFKILL is set
1647                  * therefore no need to restart the driver from this handler
1648                  */
1649                 if (!hw_rf_kill && !test_bit(STATUS_ALIVE, &priv->status))
1650                         clear_bit(STATUS_RF_KILL_HW, &priv->status);
1651
1652                 handled |= CSR_INT_BIT_RF_KILL;
1653         }
1654
1655         /* Chip got too hot and stopped itself */
1656         if (inta & CSR_INT_BIT_CT_KILL) {
1657                 IWL_ERROR("Microcode CT kill error detected.\n");
1658                 handled |= CSR_INT_BIT_CT_KILL;
1659         }
1660
1661         /* Error detected by uCode */
1662         if (inta & CSR_INT_BIT_SW_ERR) {
1663                 IWL_ERROR("Microcode SW error detected.  Restarting 0x%X.\n",
1664                           inta);
1665                 iwl4965_irq_handle_error(priv);
1666                 handled |= CSR_INT_BIT_SW_ERR;
1667         }
1668
1669         /* uCode wakes up after power-down sleep */
1670         if (inta & CSR_INT_BIT_WAKEUP) {
1671                 IWL_DEBUG_ISR("Wakeup interrupt\n");
1672                 iwl_rx_queue_update_write_ptr(priv, &priv->rxq);
1673                 iwl_txq_update_write_ptr(priv, &priv->txq[0]);
1674                 iwl_txq_update_write_ptr(priv, &priv->txq[1]);
1675                 iwl_txq_update_write_ptr(priv, &priv->txq[2]);
1676                 iwl_txq_update_write_ptr(priv, &priv->txq[3]);
1677                 iwl_txq_update_write_ptr(priv, &priv->txq[4]);
1678                 iwl_txq_update_write_ptr(priv, &priv->txq[5]);
1679
1680                 handled |= CSR_INT_BIT_WAKEUP;
1681         }
1682
1683         /* All uCode command responses, including Tx command responses,
1684          * Rx "responses" (frame-received notification), and other
1685          * notifications from uCode come through here*/
1686         if (inta & (CSR_INT_BIT_FH_RX | CSR_INT_BIT_SW_RX)) {
1687                 iwl_rx_handle(priv);
1688                 handled |= (CSR_INT_BIT_FH_RX | CSR_INT_BIT_SW_RX);
1689         }
1690
1691         if (inta & CSR_INT_BIT_FH_TX) {
1692                 IWL_DEBUG_ISR("Tx interrupt\n");
1693                 handled |= CSR_INT_BIT_FH_TX;
1694                 /* FH finished to write, send event */
1695                 priv->ucode_write_complete = 1;
1696                 wake_up_interruptible(&priv->wait_command_queue);
1697         }
1698
1699         if (inta & ~handled)
1700                 IWL_ERROR("Unhandled INTA bits 0x%08x\n", inta & ~handled);
1701
1702         if (inta & ~CSR_INI_SET_MASK) {
1703                 IWL_WARNING("Disabled INTA bits 0x%08x were pending\n",
1704                          inta & ~CSR_INI_SET_MASK);
1705                 IWL_WARNING("   with FH_INT = 0x%08x\n", inta_fh);
1706         }
1707
1708         /* Re-enable all interrupts */
1709         /* only Re-enable if diabled by irq */
1710         if (test_bit(STATUS_INT_ENABLED, &priv->status))
1711                 iwl4965_enable_interrupts(priv);
1712
1713 #ifdef CONFIG_IWLWIFI_DEBUG
1714         if (priv->debug_level & (IWL_DL_ISR)) {
1715                 inta = iwl_read32(priv, CSR_INT);
1716                 inta_mask = iwl_read32(priv, CSR_INT_MASK);
1717                 inta_fh = iwl_read32(priv, CSR_FH_INT_STATUS);
1718                 IWL_DEBUG_ISR("End inta 0x%08x, enabled 0x%08x, fh 0x%08x, "
1719                         "flags 0x%08lx\n", inta, inta_mask, inta_fh, flags);
1720         }
1721 #endif
1722         spin_unlock_irqrestore(&priv->lock, flags);
1723 }
1724
1725 static irqreturn_t iwl4965_isr(int irq, void *data)
1726 {
1727         struct iwl_priv *priv = data;
1728         u32 inta, inta_mask;
1729         u32 inta_fh;
1730         if (!priv)
1731                 return IRQ_NONE;
1732
1733         spin_lock(&priv->lock);
1734
1735         /* Disable (but don't clear!) interrupts here to avoid
1736          *    back-to-back ISRs and sporadic interrupts from our NIC.
1737          * If we have something to service, the tasklet will re-enable ints.
1738          * If we *don't* have something, we'll re-enable before leaving here. */
1739         inta_mask = iwl_read32(priv, CSR_INT_MASK);  /* just for debug */
1740         iwl_write32(priv, CSR_INT_MASK, 0x00000000);
1741
1742         /* Discover which interrupts are active/pending */
1743         inta = iwl_read32(priv, CSR_INT);
1744         inta_fh = iwl_read32(priv, CSR_FH_INT_STATUS);
1745
1746         /* Ignore interrupt if there's nothing in NIC to service.
1747          * This may be due to IRQ shared with another device,
1748          * or due to sporadic interrupts thrown from our NIC. */
1749         if (!inta && !inta_fh) {
1750                 IWL_DEBUG_ISR("Ignore interrupt, inta == 0, inta_fh == 0\n");
1751                 goto none;
1752         }
1753
1754         if ((inta == 0xFFFFFFFF) || ((inta & 0xFFFFFFF0) == 0xa5a5a5a0)) {
1755                 /* Hardware disappeared. It might have already raised
1756                  * an interrupt */
1757                 IWL_WARNING("HARDWARE GONE?? INTA == 0x%080x\n", inta);
1758                 goto unplugged;
1759         }
1760
1761         IWL_DEBUG_ISR("ISR inta 0x%08x, enabled 0x%08x, fh 0x%08x\n",
1762                       inta, inta_mask, inta_fh);
1763
1764         inta &= ~CSR_INT_BIT_SCD;
1765
1766         /* iwl4965_irq_tasklet() will service interrupts and re-enable them */
1767         if (likely(inta || inta_fh))
1768                 tasklet_schedule(&priv->irq_tasklet);
1769
1770  unplugged:
1771         spin_unlock(&priv->lock);
1772         return IRQ_HANDLED;
1773
1774  none:
1775         /* re-enable interrupts here since we don't have anything to service. */
1776         /* only Re-enable if diabled by irq */
1777         if (test_bit(STATUS_INT_ENABLED, &priv->status))
1778                 iwl4965_enable_interrupts(priv);
1779         spin_unlock(&priv->lock);
1780         return IRQ_NONE;
1781 }
1782
1783 /******************************************************************************
1784  *
1785  * uCode download functions
1786  *
1787  ******************************************************************************/
1788
1789 static void iwl4965_dealloc_ucode_pci(struct iwl_priv *priv)
1790 {
1791         iwl_free_fw_desc(priv->pci_dev, &priv->ucode_code);
1792         iwl_free_fw_desc(priv->pci_dev, &priv->ucode_data);
1793         iwl_free_fw_desc(priv->pci_dev, &priv->ucode_data_backup);
1794         iwl_free_fw_desc(priv->pci_dev, &priv->ucode_init);
1795         iwl_free_fw_desc(priv->pci_dev, &priv->ucode_init_data);
1796         iwl_free_fw_desc(priv->pci_dev, &priv->ucode_boot);
1797 }
1798
1799 static void iwl4965_nic_start(struct iwl_priv *priv)
1800 {
1801         /* Remove all resets to allow NIC to operate */
1802         iwl_write32(priv, CSR_RESET, 0);
1803 }
1804
1805
1806 /**
1807  * iwl4965_read_ucode - Read uCode images from disk file.
1808  *
1809  * Copy into buffers for card to fetch via bus-mastering
1810  */
1811 static int iwl4965_read_ucode(struct iwl_priv *priv)
1812 {
1813         struct iwl_ucode *ucode;
1814         int ret;
1815         const struct firmware *ucode_raw;
1816         const char *name = priv->cfg->fw_name;
1817         u8 *src;
1818         size_t len;
1819         u32 ver, inst_size, data_size, init_size, init_data_size, boot_size;
1820
1821         /* Ask kernel firmware_class module to get the boot firmware off disk.
1822          * request_firmware() is synchronous, file is in memory on return. */
1823         ret = request_firmware(&ucode_raw, name, &priv->pci_dev->dev);
1824         if (ret < 0) {
1825                 IWL_ERROR("%s firmware file req failed: Reason %d\n",
1826                                         name, ret);
1827                 goto error;
1828         }
1829
1830         IWL_DEBUG_INFO("Got firmware '%s' file (%zd bytes) from disk\n",
1831                        name, ucode_raw->size);
1832
1833         /* Make sure that we got at least our header! */
1834         if (ucode_raw->size < sizeof(*ucode)) {
1835                 IWL_ERROR("File size way too small!\n");
1836                 ret = -EINVAL;
1837                 goto err_release;
1838         }
1839
1840         /* Data from ucode file:  header followed by uCode images */
1841         ucode = (void *)ucode_raw->data;
1842
1843         ver = le32_to_cpu(ucode->ver);
1844         inst_size = le32_to_cpu(ucode->inst_size);
1845         data_size = le32_to_cpu(ucode->data_size);
1846         init_size = le32_to_cpu(ucode->init_size);
1847         init_data_size = le32_to_cpu(ucode->init_data_size);
1848         boot_size = le32_to_cpu(ucode->boot_size);
1849
1850         IWL_DEBUG_INFO("f/w package hdr ucode version = 0x%x\n", ver);
1851         IWL_DEBUG_INFO("f/w package hdr runtime inst size = %u\n",
1852                        inst_size);
1853         IWL_DEBUG_INFO("f/w package hdr runtime data size = %u\n",
1854                        data_size);
1855         IWL_DEBUG_INFO("f/w package hdr init inst size = %u\n",
1856                        init_size);
1857         IWL_DEBUG_INFO("f/w package hdr init data size = %u\n",
1858                        init_data_size);
1859         IWL_DEBUG_INFO("f/w package hdr boot inst size = %u\n",
1860                        boot_size);
1861
1862         /* Verify size of file vs. image size info in file's header */
1863         if (ucode_raw->size < sizeof(*ucode) +
1864                 inst_size + data_size + init_size +
1865                 init_data_size + boot_size) {
1866
1867                 IWL_DEBUG_INFO("uCode file size %d too small\n",
1868                                (int)ucode_raw->size);
1869                 ret = -EINVAL;
1870                 goto err_release;
1871         }
1872
1873         /* Verify that uCode images will fit in card's SRAM */
1874         if (inst_size > priv->hw_params.max_inst_size) {
1875                 IWL_DEBUG_INFO("uCode instr len %d too large to fit in\n",
1876                                inst_size);
1877                 ret = -EINVAL;
1878                 goto err_release;
1879         }
1880
1881         if (data_size > priv->hw_params.max_data_size) {
1882                 IWL_DEBUG_INFO("uCode data len %d too large to fit in\n",
1883                                 data_size);
1884                 ret = -EINVAL;
1885                 goto err_release;
1886         }
1887         if (init_size > priv->hw_params.max_inst_size) {
1888                 IWL_DEBUG_INFO
1889                     ("uCode init instr len %d too large to fit in\n",
1890                       init_size);
1891                 ret = -EINVAL;
1892                 goto err_release;
1893         }
1894         if (init_data_size > priv->hw_params.max_data_size) {
1895                 IWL_DEBUG_INFO
1896                     ("uCode init data len %d too large to fit in\n",
1897                       init_data_size);
1898                 ret = -EINVAL;
1899                 goto err_release;
1900         }
1901         if (boot_size > priv->hw_params.max_bsm_size) {
1902                 IWL_DEBUG_INFO
1903                     ("uCode boot instr len %d too large to fit in\n",
1904                       boot_size);
1905                 ret = -EINVAL;
1906                 goto err_release;
1907         }
1908
1909         /* Allocate ucode buffers for card's bus-master loading ... */
1910
1911         /* Runtime instructions and 2 copies of data:
1912          * 1) unmodified from disk
1913          * 2) backup cache for save/restore during power-downs */
1914         priv->ucode_code.len = inst_size;
1915         iwl_alloc_fw_desc(priv->pci_dev, &priv->ucode_code);
1916
1917         priv->ucode_data.len = data_size;
1918         iwl_alloc_fw_desc(priv->pci_dev, &priv->ucode_data);
1919
1920         priv->ucode_data_backup.len = data_size;
1921         iwl_alloc_fw_desc(priv->pci_dev, &priv->ucode_data_backup);
1922
1923         /* Initialization instructions and data */
1924         if (init_size && init_data_size) {
1925                 priv->ucode_init.len = init_size;
1926                 iwl_alloc_fw_desc(priv->pci_dev, &priv->ucode_init);
1927
1928                 priv->ucode_init_data.len = init_data_size;
1929                 iwl_alloc_fw_desc(priv->pci_dev, &priv->ucode_init_data);
1930
1931                 if (!priv->ucode_init.v_addr || !priv->ucode_init_data.v_addr)
1932                         goto err_pci_alloc;
1933         }
1934
1935         /* Bootstrap (instructions only, no data) */
1936         if (boot_size) {
1937                 priv->ucode_boot.len = boot_size;
1938                 iwl_alloc_fw_desc(priv->pci_dev, &priv->ucode_boot);
1939
1940                 if (!priv->ucode_boot.v_addr)
1941                         goto err_pci_alloc;
1942         }
1943
1944         /* Copy images into buffers for card's bus-master reads ... */
1945
1946         /* Runtime instructions (first block of data in file) */
1947         src = &ucode->data[0];
1948         len = priv->ucode_code.len;
1949         IWL_DEBUG_INFO("Copying (but not loading) uCode instr len %Zd\n", len);
1950         memcpy(priv->ucode_code.v_addr, src, len);
1951         IWL_DEBUG_INFO("uCode instr buf vaddr = 0x%p, paddr = 0x%08x\n",
1952                 priv->ucode_code.v_addr, (u32)priv->ucode_code.p_addr);
1953
1954         /* Runtime data (2nd block)
1955          * NOTE:  Copy into backup buffer will be done in iwl4965_up()  */
1956         src = &ucode->data[inst_size];
1957         len = priv->ucode_data.len;
1958         IWL_DEBUG_INFO("Copying (but not loading) uCode data len %Zd\n", len);
1959         memcpy(priv->ucode_data.v_addr, src, len);
1960         memcpy(priv->ucode_data_backup.v_addr, src, len);
1961
1962         /* Initialization instructions (3rd block) */
1963         if (init_size) {
1964                 src = &ucode->data[inst_size + data_size];
1965                 len = priv->ucode_init.len;
1966                 IWL_DEBUG_INFO("Copying (but not loading) init instr len %Zd\n",
1967                                 len);
1968                 memcpy(priv->ucode_init.v_addr, src, len);
1969         }
1970
1971         /* Initialization data (4th block) */
1972         if (init_data_size) {
1973                 src = &ucode->data[inst_size + data_size + init_size];
1974                 len = priv->ucode_init_data.len;
1975                 IWL_DEBUG_INFO("Copying (but not loading) init data len %Zd\n",
1976                                len);
1977                 memcpy(priv->ucode_init_data.v_addr, src, len);
1978         }
1979
1980         /* Bootstrap instructions (5th block) */
1981         src = &ucode->data[inst_size + data_size + init_size + init_data_size];
1982         len = priv->ucode_boot.len;
1983         IWL_DEBUG_INFO("Copying (but not loading) boot instr len %Zd\n", len);
1984         memcpy(priv->ucode_boot.v_addr, src, len);
1985
1986         /* We have our copies now, allow OS release its copies */
1987         release_firmware(ucode_raw);
1988         return 0;
1989
1990  err_pci_alloc:
1991         IWL_ERROR("failed to allocate pci memory\n");
1992         ret = -ENOMEM;
1993         iwl4965_dealloc_ucode_pci(priv);
1994
1995  err_release:
1996         release_firmware(ucode_raw);
1997
1998  error:
1999         return ret;
2000 }
2001
2002 /**
2003  * iwl_alive_start - called after REPLY_ALIVE notification received
2004  *                   from protocol/runtime uCode (initialization uCode's
2005  *                   Alive gets handled by iwl_init_alive_start()).
2006  */
2007 static void iwl_alive_start(struct iwl_priv *priv)
2008 {
2009         int ret = 0;
2010
2011         IWL_DEBUG_INFO("Runtime Alive received.\n");
2012
2013         if (priv->card_alive.is_valid != UCODE_VALID_OK) {
2014                 /* We had an error bringing up the hardware, so take it
2015                  * all the way back down so we can try again */
2016                 IWL_DEBUG_INFO("Alive failed.\n");
2017                 goto restart;
2018         }
2019
2020         /* Initialize uCode has loaded Runtime uCode ... verify inst image.
2021          * This is a paranoid check, because we would not have gotten the
2022          * "runtime" alive if code weren't properly loaded.  */
2023         if (iwl_verify_ucode(priv)) {
2024                 /* Runtime instruction load was bad;
2025                  * take it all the way back down so we can try again */
2026                 IWL_DEBUG_INFO("Bad runtime uCode load.\n");
2027                 goto restart;
2028         }
2029
2030         iwl_clear_stations_table(priv);
2031         ret = priv->cfg->ops->lib->alive_notify(priv);
2032         if (ret) {
2033                 IWL_WARNING("Could not complete ALIVE transition [ntf]: %d\n",
2034                             ret);
2035                 goto restart;
2036         }
2037
2038         /* After the ALIVE response, we can send host commands to 4965 uCode */
2039         set_bit(STATUS_ALIVE, &priv->status);
2040
2041         if (iwl_is_rfkill(priv))
2042                 return;
2043
2044         ieee80211_wake_queues(priv->hw);
2045
2046         priv->active_rate = priv->rates_mask;
2047         priv->active_rate_basic = priv->rates_mask & IWL_BASIC_RATES_MASK;
2048
2049         if (iwl_is_associated(priv)) {
2050                 struct iwl_rxon_cmd *active_rxon =
2051                                 (struct iwl_rxon_cmd *)&priv->active_rxon;
2052
2053                 memcpy(&priv->staging_rxon, &priv->active_rxon,
2054                        sizeof(priv->staging_rxon));
2055                 active_rxon->filter_flags &= ~RXON_FILTER_ASSOC_MSK;
2056         } else {
2057                 /* Initialize our rx_config data */
2058                 iwl4965_connection_init_rx_config(priv);
2059                 memcpy(priv->staging_rxon.node_addr, priv->mac_addr, ETH_ALEN);
2060         }
2061
2062         /* Configure Bluetooth device coexistence support */
2063         iwl4965_send_bt_config(priv);
2064
2065         iwl_reset_run_time_calib(priv);
2066
2067         /* Configure the adapter for unassociated operation */
2068         iwl4965_commit_rxon(priv);
2069
2070         /* At this point, the NIC is initialized and operational */
2071         iwl_rf_kill_ct_config(priv);
2072
2073         iwl_leds_register(priv);
2074
2075         IWL_DEBUG_INFO("ALIVE processing complete.\n");
2076         set_bit(STATUS_READY, &priv->status);
2077         wake_up_interruptible(&priv->wait_command_queue);
2078
2079         if (priv->error_recovering)
2080                 iwl4965_error_recovery(priv);
2081
2082         iwl_power_update_mode(priv, 1);
2083
2084         if (test_and_clear_bit(STATUS_MODE_PENDING, &priv->status))
2085                 iwl4965_set_mode(priv, priv->iw_mode);
2086
2087         return;
2088
2089  restart:
2090         queue_work(priv->workqueue, &priv->restart);
2091 }
2092
2093 static void iwl_cancel_deferred_work(struct iwl_priv *priv);
2094
2095 static void __iwl4965_down(struct iwl_priv *priv)
2096 {
2097         unsigned long flags;
2098         int exit_pending = test_bit(STATUS_EXIT_PENDING, &priv->status);
2099
2100         IWL_DEBUG_INFO(DRV_NAME " is going down\n");
2101
2102         if (!exit_pending)
2103                 set_bit(STATUS_EXIT_PENDING, &priv->status);
2104
2105         iwl_leds_unregister(priv);
2106
2107         iwl_clear_stations_table(priv);
2108
2109         /* Unblock any waiting calls */
2110         wake_up_interruptible_all(&priv->wait_command_queue);
2111
2112         /* Wipe out the EXIT_PENDING status bit if we are not actually
2113          * exiting the module */
2114         if (!exit_pending)
2115                 clear_bit(STATUS_EXIT_PENDING, &priv->status);
2116
2117         /* stop and reset the on-board processor */
2118         iwl_write32(priv, CSR_RESET, CSR_RESET_REG_FLAG_NEVO_RESET);
2119
2120         /* tell the device to stop sending interrupts */
2121         spin_lock_irqsave(&priv->lock, flags);
2122         iwl4965_disable_interrupts(priv);
2123         spin_unlock_irqrestore(&priv->lock, flags);
2124         iwl_synchronize_irq(priv);
2125
2126         if (priv->mac80211_registered)
2127                 ieee80211_stop_queues(priv->hw);
2128
2129         /* If we have not previously called iwl4965_init() then
2130          * clear all bits but the RF Kill and SUSPEND bits and return */
2131         if (!iwl_is_init(priv)) {
2132                 priv->status = test_bit(STATUS_RF_KILL_HW, &priv->status) <<
2133                                         STATUS_RF_KILL_HW |
2134                                test_bit(STATUS_RF_KILL_SW, &priv->status) <<
2135                                         STATUS_RF_KILL_SW |
2136                                test_bit(STATUS_GEO_CONFIGURED, &priv->status) <<
2137                                         STATUS_GEO_CONFIGURED |
2138                                test_bit(STATUS_IN_SUSPEND, &priv->status) <<
2139                                         STATUS_IN_SUSPEND |
2140                                test_bit(STATUS_EXIT_PENDING, &priv->status) <<
2141                                         STATUS_EXIT_PENDING;
2142                 goto exit;
2143         }
2144
2145         /* ...otherwise clear out all the status bits but the RF Kill and
2146          * SUSPEND bits and continue taking the NIC down. */
2147         priv->status &= test_bit(STATUS_RF_KILL_HW, &priv->status) <<
2148                                 STATUS_RF_KILL_HW |
2149                         test_bit(STATUS_RF_KILL_SW, &priv->status) <<
2150                                 STATUS_RF_KILL_SW |
2151                         test_bit(STATUS_GEO_CONFIGURED, &priv->status) <<
2152                                 STATUS_GEO_CONFIGURED |
2153                         test_bit(STATUS_IN_SUSPEND, &priv->status) <<
2154                                 STATUS_IN_SUSPEND |
2155                         test_bit(STATUS_FW_ERROR, &priv->status) <<
2156                                 STATUS_FW_ERROR |
2157                        test_bit(STATUS_EXIT_PENDING, &priv->status) <<
2158                                 STATUS_EXIT_PENDING;
2159
2160         spin_lock_irqsave(&priv->lock, flags);
2161         iwl_clear_bit(priv, CSR_GP_CNTRL,
2162                          CSR_GP_CNTRL_REG_FLAG_MAC_ACCESS_REQ);
2163         spin_unlock_irqrestore(&priv->lock, flags);
2164
2165         iwl_txq_ctx_stop(priv);
2166         iwl_rxq_stop(priv);
2167
2168         spin_lock_irqsave(&priv->lock, flags);
2169         if (!iwl_grab_nic_access(priv)) {
2170                 iwl_write_prph(priv, APMG_CLK_DIS_REG,
2171                                          APMG_CLK_VAL_DMA_CLK_RQT);
2172                 iwl_release_nic_access(priv);
2173         }
2174         spin_unlock_irqrestore(&priv->lock, flags);
2175
2176         udelay(5);
2177
2178         /* FIXME: apm_ops.suspend(priv) */
2179         if (exit_pending || test_bit(STATUS_IN_SUSPEND, &priv->status))
2180                 priv->cfg->ops->lib->apm_ops.stop(priv);
2181         else
2182                 priv->cfg->ops->lib->apm_ops.reset(priv);
2183         priv->cfg->ops->lib->free_shared_mem(priv);
2184
2185  exit:
2186         memset(&priv->card_alive, 0, sizeof(struct iwl_alive_resp));
2187
2188         if (priv->ibss_beacon)
2189                 dev_kfree_skb(priv->ibss_beacon);
2190         priv->ibss_beacon = NULL;
2191
2192         /* clear out any free frames */
2193         iwl_clear_free_frames(priv);
2194 }
2195
2196 static void iwl4965_down(struct iwl_priv *priv)
2197 {
2198         mutex_lock(&priv->mutex);
2199         __iwl4965_down(priv);
2200         mutex_unlock(&priv->mutex);
2201
2202         iwl_cancel_deferred_work(priv);
2203 }
2204
2205 #define MAX_HW_RESTARTS 5
2206
2207 static int __iwl4965_up(struct iwl_priv *priv)
2208 {
2209         int i;
2210         int ret;
2211
2212         if (test_bit(STATUS_EXIT_PENDING, &priv->status)) {
2213                 IWL_WARNING("Exit pending; will not bring the NIC up\n");
2214                 return -EIO;
2215         }
2216
2217         if (!priv->ucode_data_backup.v_addr || !priv->ucode_data.v_addr) {
2218                 IWL_ERROR("ucode not available for device bringup\n");
2219                 return -EIO;
2220         }
2221
2222         /* If platform's RF_KILL switch is NOT set to KILL */
2223         if (iwl_read32(priv, CSR_GP_CNTRL) & CSR_GP_CNTRL_REG_FLAG_HW_RF_KILL_SW)
2224                 clear_bit(STATUS_RF_KILL_HW, &priv->status);
2225         else
2226                 set_bit(STATUS_RF_KILL_HW, &priv->status);
2227
2228         if (iwl_is_rfkill(priv)) {
2229                 iwl4965_enable_interrupts(priv);
2230                 IWL_WARNING("Radio disabled by %s RF Kill switch\n",
2231                     test_bit(STATUS_RF_KILL_HW, &priv->status) ? "HW" : "SW");
2232                 return 0;
2233         }
2234
2235         iwl_write32(priv, CSR_INT, 0xFFFFFFFF);
2236
2237         ret = priv->cfg->ops->lib->alloc_shared_mem(priv);
2238         if (ret) {
2239                 IWL_ERROR("Unable to allocate shared memory\n");
2240                 return ret;
2241         }
2242
2243         ret = iwl_hw_nic_init(priv);
2244         if (ret) {
2245                 IWL_ERROR("Unable to init nic\n");
2246                 return ret;
2247         }
2248
2249         /* make sure rfkill handshake bits are cleared */
2250         iwl_write32(priv, CSR_UCODE_DRV_GP1_CLR, CSR_UCODE_SW_BIT_RFKILL);
2251         iwl_write32(priv, CSR_UCODE_DRV_GP1_CLR,
2252                     CSR_UCODE_DRV_GP1_BIT_CMD_BLOCKED);
2253
2254         /* clear (again), then enable host interrupts */
2255         iwl_write32(priv, CSR_INT, 0xFFFFFFFF);
2256         iwl4965_enable_interrupts(priv);
2257
2258         /* really make sure rfkill handshake bits are cleared */
2259         iwl_write32(priv, CSR_UCODE_DRV_GP1_CLR, CSR_UCODE_SW_BIT_RFKILL);
2260         iwl_write32(priv, CSR_UCODE_DRV_GP1_CLR, CSR_UCODE_SW_BIT_RFKILL);
2261
2262         /* Copy original ucode data image from disk into backup cache.
2263          * This will be used to initialize the on-board processor's
2264          * data SRAM for a clean start when the runtime program first loads. */
2265         memcpy(priv->ucode_data_backup.v_addr, priv->ucode_data.v_addr,
2266                priv->ucode_data.len);
2267
2268         for (i = 0; i < MAX_HW_RESTARTS; i++) {
2269
2270                 iwl_clear_stations_table(priv);
2271
2272                 /* load bootstrap state machine,
2273                  * load bootstrap program into processor's memory,
2274                  * prepare to load the "initialize" uCode */
2275                 ret = priv->cfg->ops->lib->load_ucode(priv);
2276
2277                 if (ret) {
2278                         IWL_ERROR("Unable to set up bootstrap uCode: %d\n", ret);
2279                         continue;
2280                 }
2281
2282                 /* Clear out the uCode error bit if it is set */
2283                 clear_bit(STATUS_FW_ERROR, &priv->status);
2284
2285                 /* start card; "initialize" will load runtime ucode */
2286                 iwl4965_nic_start(priv);
2287
2288                 IWL_DEBUG_INFO(DRV_NAME " is coming up\n");
2289
2290                 return 0;
2291         }
2292
2293         set_bit(STATUS_EXIT_PENDING, &priv->status);
2294         __iwl4965_down(priv);
2295         clear_bit(STATUS_EXIT_PENDING, &priv->status);
2296
2297         /* tried to restart and config the device for as long as our
2298          * patience could withstand */
2299         IWL_ERROR("Unable to initialize device after %d attempts.\n", i);
2300         return -EIO;
2301 }
2302
2303
2304 /*****************************************************************************
2305  *
2306  * Workqueue callbacks
2307  *
2308  *****************************************************************************/
2309
2310 static void iwl_bg_init_alive_start(struct work_struct *data)
2311 {
2312         struct iwl_priv *priv =
2313             container_of(data, struct iwl_priv, init_alive_start.work);
2314
2315         if (test_bit(STATUS_EXIT_PENDING, &priv->status))
2316                 return;
2317
2318         mutex_lock(&priv->mutex);
2319         priv->cfg->ops->lib->init_alive_start(priv);
2320         mutex_unlock(&priv->mutex);
2321 }
2322
2323 static void iwl_bg_alive_start(struct work_struct *data)
2324 {
2325         struct iwl_priv *priv =
2326             container_of(data, struct iwl_priv, alive_start.work);
2327
2328         if (test_bit(STATUS_EXIT_PENDING, &priv->status))
2329                 return;
2330
2331         mutex_lock(&priv->mutex);
2332         iwl_alive_start(priv);
2333         mutex_unlock(&priv->mutex);
2334         ieee80211_notify_mac(priv->hw, IEEE80211_NOTIFY_RE_ASSOC);
2335 }
2336
2337 static void iwl4965_bg_rf_kill(struct work_struct *work)
2338 {
2339         struct iwl_priv *priv = container_of(work, struct iwl_priv, rf_kill);
2340
2341         wake_up_interruptible(&priv->wait_command_queue);
2342
2343         if (test_bit(STATUS_EXIT_PENDING, &priv->status))
2344                 return;
2345
2346         mutex_lock(&priv->mutex);
2347
2348         if (!iwl_is_rfkill(priv)) {
2349                 IWL_DEBUG(IWL_DL_RF_KILL,
2350                           "HW and/or SW RF Kill no longer active, restarting "
2351                           "device\n");
2352                 if (!test_bit(STATUS_EXIT_PENDING, &priv->status))
2353                         queue_work(priv->workqueue, &priv->restart);
2354         } else {
2355                 /* make sure mac80211 stop sending Tx frame */
2356                 if (priv->mac80211_registered)
2357                         ieee80211_stop_queues(priv->hw);
2358
2359                 if (!test_bit(STATUS_RF_KILL_HW, &priv->status))
2360                         IWL_DEBUG_RF_KILL("Can not turn radio back on - "
2361                                           "disabled by SW switch\n");
2362                 else
2363                         IWL_WARNING("Radio Frequency Kill Switch is On:\n"
2364                                     "Kill switch must be turned off for "
2365                                     "wireless networking to work.\n");
2366         }
2367         mutex_unlock(&priv->mutex);
2368         iwl_rfkill_set_hw_state(priv);
2369 }
2370
2371 static void iwl4965_bg_set_monitor(struct work_struct *work)
2372 {
2373         struct iwl_priv *priv = container_of(work,
2374                                 struct iwl_priv, set_monitor);
2375         int ret;
2376
2377         IWL_DEBUG(IWL_DL_STATE, "setting monitor mode\n");
2378
2379         mutex_lock(&priv->mutex);
2380
2381         ret = iwl4965_set_mode(priv, NL80211_IFTYPE_MONITOR);
2382
2383         if (ret) {
2384                 if (ret == -EAGAIN)
2385                         IWL_DEBUG(IWL_DL_STATE, "leave - not ready\n");
2386                 else
2387                         IWL_ERROR("iwl4965_set_mode() failed ret = %d\n", ret);
2388         }
2389
2390         mutex_unlock(&priv->mutex);
2391 }
2392
2393 static void iwl_bg_run_time_calib_work(struct work_struct *work)
2394 {
2395         struct iwl_priv *priv = container_of(work, struct iwl_priv,
2396                         run_time_calib_work);
2397
2398         mutex_lock(&priv->mutex);
2399
2400         if (test_bit(STATUS_EXIT_PENDING, &priv->status) ||
2401             test_bit(STATUS_SCANNING, &priv->status)) {
2402                 mutex_unlock(&priv->mutex);
2403                 return;
2404         }
2405
2406         if (priv->start_calib) {
2407                 iwl_chain_noise_calibration(priv, &priv->statistics);
2408
2409                 iwl_sensitivity_calibration(priv, &priv->statistics);
2410         }
2411
2412         mutex_unlock(&priv->mutex);
2413         return;
2414 }
2415
2416 static void iwl4965_bg_up(struct work_struct *data)
2417 {
2418         struct iwl_priv *priv = container_of(data, struct iwl_priv, up);
2419
2420         if (test_bit(STATUS_EXIT_PENDING, &priv->status))
2421                 return;
2422
2423         mutex_lock(&priv->mutex);
2424         __iwl4965_up(priv);
2425         mutex_unlock(&priv->mutex);
2426         iwl_rfkill_set_hw_state(priv);
2427 }
2428
2429 static void iwl4965_bg_restart(struct work_struct *data)
2430 {
2431         struct iwl_priv *priv = container_of(data, struct iwl_priv, restart);
2432
2433         if (test_bit(STATUS_EXIT_PENDING, &priv->status))
2434                 return;
2435
2436         iwl4965_down(priv);
2437         queue_work(priv->workqueue, &priv->up);
2438 }
2439
2440 static void iwl4965_bg_rx_replenish(struct work_struct *data)
2441 {
2442         struct iwl_priv *priv =
2443             container_of(data, struct iwl_priv, rx_replenish);
2444
2445         if (test_bit(STATUS_EXIT_PENDING, &priv->status))
2446                 return;
2447
2448         mutex_lock(&priv->mutex);
2449         iwl_rx_replenish(priv);
2450         mutex_unlock(&priv->mutex);
2451 }
2452
2453 #define IWL_DELAY_NEXT_SCAN (HZ*2)
2454
2455 static void iwl4965_post_associate(struct iwl_priv *priv)
2456 {
2457         struct ieee80211_conf *conf = NULL;
2458         int ret = 0;
2459         unsigned long flags;
2460
2461         if (priv->iw_mode == NL80211_IFTYPE_AP) {
2462                 IWL_ERROR("%s Should not be called in AP mode\n", __func__);
2463                 return;
2464         }
2465
2466         IWL_DEBUG_ASSOC("Associated as %d to: %pM\n",
2467                         priv->assoc_id, priv->active_rxon.bssid_addr);
2468
2469
2470         if (test_bit(STATUS_EXIT_PENDING, &priv->status))
2471                 return;
2472
2473
2474         if (!priv->vif || !priv->is_open)
2475                 return;
2476
2477         iwl_power_cancel_timeout(priv);
2478         iwl_scan_cancel_timeout(priv, 200);
2479
2480         conf = ieee80211_get_hw_conf(priv->hw);
2481
2482         priv->staging_rxon.filter_flags &= ~RXON_FILTER_ASSOC_MSK;
2483         iwl4965_commit_rxon(priv);
2484
2485         iwl_setup_rxon_timing(priv);
2486         ret = iwl_send_cmd_pdu(priv, REPLY_RXON_TIMING,
2487                               sizeof(priv->rxon_timing), &priv->rxon_timing);
2488         if (ret)
2489                 IWL_WARNING("REPLY_RXON_TIMING failed - "
2490                             "Attempting to continue.\n");
2491
2492         priv->staging_rxon.filter_flags |= RXON_FILTER_ASSOC_MSK;
2493
2494         iwl_set_rxon_ht(priv, &priv->current_ht_config);
2495
2496         iwl_set_rxon_chain(priv);
2497         priv->staging_rxon.assoc_id = cpu_to_le16(priv->assoc_id);
2498
2499         IWL_DEBUG_ASSOC("assoc id %d beacon interval %d\n",
2500                         priv->assoc_id, priv->beacon_int);
2501
2502         if (priv->assoc_capability & WLAN_CAPABILITY_SHORT_PREAMBLE)
2503                 priv->staging_rxon.flags |= RXON_FLG_SHORT_PREAMBLE_MSK;
2504         else
2505                 priv->staging_rxon.flags &= ~RXON_FLG_SHORT_PREAMBLE_MSK;
2506
2507         if (priv->staging_rxon.flags & RXON_FLG_BAND_24G_MSK) {
2508                 if (priv->assoc_capability & WLAN_CAPABILITY_SHORT_SLOT_TIME)
2509                         priv->staging_rxon.flags |= RXON_FLG_SHORT_SLOT_MSK;
2510                 else
2511                         priv->staging_rxon.flags &= ~RXON_FLG_SHORT_SLOT_MSK;
2512
2513                 if (priv->iw_mode == NL80211_IFTYPE_ADHOC)
2514                         priv->staging_rxon.flags &= ~RXON_FLG_SHORT_SLOT_MSK;
2515
2516         }
2517
2518         iwl4965_commit_rxon(priv);
2519
2520         switch (priv->iw_mode) {
2521         case NL80211_IFTYPE_STATION:
2522                 break;
2523
2524         case NL80211_IFTYPE_ADHOC:
2525
2526                 /* assume default assoc id */
2527                 priv->assoc_id = 1;
2528
2529                 iwl_rxon_add_station(priv, priv->bssid, 0);
2530                 iwl4965_send_beacon_cmd(priv);
2531
2532                 break;
2533
2534         default:
2535                 IWL_ERROR("%s Should not be called in %d mode\n",
2536                           __func__, priv->iw_mode);
2537                 break;
2538         }
2539
2540         if (priv->iw_mode == NL80211_IFTYPE_ADHOC)
2541                 priv->assoc_station_added = 1;
2542
2543         spin_lock_irqsave(&priv->lock, flags);
2544         iwl_activate_qos(priv, 0);
2545         spin_unlock_irqrestore(&priv->lock, flags);
2546
2547         /* the chain noise calibration will enabled PM upon completion
2548          * If chain noise has already been run, then we need to enable
2549          * power management here */
2550         if (priv->chain_noise_data.state == IWL_CHAIN_NOISE_DONE)
2551                 iwl_power_enable_management(priv);
2552
2553         /* Enable Rx differential gain and sensitivity calibrations */
2554         iwl_chain_noise_reset(priv);
2555         priv->start_calib = 1;
2556
2557 }
2558
2559 /*****************************************************************************
2560  *
2561  * mac80211 entry point functions
2562  *
2563  *****************************************************************************/
2564
2565 #define UCODE_READY_TIMEOUT     (4 * HZ)
2566
2567 static int iwl4965_mac_start(struct ieee80211_hw *hw)
2568 {
2569         struct iwl_priv *priv = hw->priv;
2570         int ret;
2571         u16 pci_cmd;
2572
2573         IWL_DEBUG_MAC80211("enter\n");
2574
2575         if (pci_enable_device(priv->pci_dev)) {
2576                 IWL_ERROR("Fail to pci_enable_device\n");
2577                 return -ENODEV;
2578         }
2579         pci_restore_state(priv->pci_dev);
2580         pci_enable_msi(priv->pci_dev);
2581
2582         /* enable interrupts if needed: hw bug w/a */
2583         pci_read_config_word(priv->pci_dev, PCI_COMMAND, &pci_cmd);
2584         if (pci_cmd & PCI_COMMAND_INTX_DISABLE) {
2585                 pci_cmd &= ~PCI_COMMAND_INTX_DISABLE;
2586                 pci_write_config_word(priv->pci_dev, PCI_COMMAND, pci_cmd);
2587         }
2588
2589         ret = request_irq(priv->pci_dev->irq, iwl4965_isr, IRQF_SHARED,
2590                           DRV_NAME, priv);
2591         if (ret) {
2592                 IWL_ERROR("Error allocating IRQ %d\n", priv->pci_dev->irq);
2593                 goto out_disable_msi;
2594         }
2595
2596         /* we should be verifying the device is ready to be opened */
2597         mutex_lock(&priv->mutex);
2598
2599         memset(&priv->staging_rxon, 0, sizeof(struct iwl_rxon_cmd));
2600         /* fetch ucode file from disk, alloc and copy to bus-master buffers ...
2601          * ucode filename and max sizes are card-specific. */
2602
2603         if (!priv->ucode_code.len) {
2604                 ret = iwl4965_read_ucode(priv);
2605                 if (ret) {
2606                         IWL_ERROR("Could not read microcode: %d\n", ret);
2607                         mutex_unlock(&priv->mutex);
2608                         goto out_release_irq;
2609                 }
2610         }
2611
2612         ret = __iwl4965_up(priv);
2613
2614         mutex_unlock(&priv->mutex);
2615
2616         iwl_rfkill_set_hw_state(priv);
2617
2618         if (ret)
2619                 goto out_release_irq;
2620
2621         if (iwl_is_rfkill(priv))
2622                 goto out;
2623
2624         IWL_DEBUG_INFO("Start UP work done.\n");
2625
2626         if (test_bit(STATUS_IN_SUSPEND, &priv->status))
2627                 return 0;
2628
2629         /* Wait for START_ALIVE from Run Time ucode. Otherwise callbacks from
2630          * mac80211 will not be run successfully. */
2631         ret = wait_event_interruptible_timeout(priv->wait_command_queue,
2632                         test_bit(STATUS_READY, &priv->status),
2633                         UCODE_READY_TIMEOUT);
2634         if (!ret) {
2635                 if (!test_bit(STATUS_READY, &priv->status)) {
2636                         IWL_ERROR("START_ALIVE timeout after %dms.\n",
2637                                 jiffies_to_msecs(UCODE_READY_TIMEOUT));
2638                         ret = -ETIMEDOUT;
2639                         goto out_release_irq;
2640                 }
2641         }
2642
2643 out:
2644         priv->is_open = 1;
2645         IWL_DEBUG_MAC80211("leave\n");
2646         return 0;
2647
2648 out_release_irq:
2649         free_irq(priv->pci_dev->irq, priv);
2650 out_disable_msi:
2651         pci_disable_msi(priv->pci_dev);
2652         pci_disable_device(priv->pci_dev);
2653         priv->is_open = 0;
2654         IWL_DEBUG_MAC80211("leave - failed\n");
2655         return ret;
2656 }
2657
2658 static void iwl4965_mac_stop(struct ieee80211_hw *hw)
2659 {
2660         struct iwl_priv *priv = hw->priv;
2661
2662         IWL_DEBUG_MAC80211("enter\n");
2663
2664         if (!priv->is_open) {
2665                 IWL_DEBUG_MAC80211("leave - skip\n");
2666                 return;
2667         }
2668
2669         priv->is_open = 0;
2670
2671         if (iwl_is_ready_rf(priv)) {
2672                 /* stop mac, cancel any scan request and clear
2673                  * RXON_FILTER_ASSOC_MSK BIT
2674                  */
2675                 mutex_lock(&priv->mutex);
2676                 iwl_scan_cancel_timeout(priv, 100);
2677                 mutex_unlock(&priv->mutex);
2678         }
2679
2680         iwl4965_down(priv);
2681
2682         flush_workqueue(priv->workqueue);
2683         free_irq(priv->pci_dev->irq, priv);
2684         pci_disable_msi(priv->pci_dev);
2685         pci_save_state(priv->pci_dev);
2686         pci_disable_device(priv->pci_dev);
2687
2688         IWL_DEBUG_MAC80211("leave\n");
2689 }
2690
2691 static int iwl4965_mac_tx(struct ieee80211_hw *hw, struct sk_buff *skb)
2692 {
2693         struct iwl_priv *priv = hw->priv;
2694
2695         IWL_DEBUG_MACDUMP("enter\n");
2696
2697         IWL_DEBUG_TX("dev->xmit(%d bytes) at rate 0x%02x\n", skb->len,
2698                      ieee80211_get_tx_rate(hw, IEEE80211_SKB_CB(skb))->bitrate);
2699
2700         if (iwl_tx_skb(priv, skb))
2701                 dev_kfree_skb_any(skb);
2702
2703         IWL_DEBUG_MACDUMP("leave\n");
2704         return 0;
2705 }
2706
2707 static int iwl4965_mac_add_interface(struct ieee80211_hw *hw,
2708                                  struct ieee80211_if_init_conf *conf)
2709 {
2710         struct iwl_priv *priv = hw->priv;
2711         unsigned long flags;
2712
2713         IWL_DEBUG_MAC80211("enter: type %d\n", conf->type);
2714
2715         if (priv->vif) {
2716                 IWL_DEBUG_MAC80211("leave - vif != NULL\n");
2717                 return -EOPNOTSUPP;
2718         }
2719
2720         spin_lock_irqsave(&priv->lock, flags);
2721         priv->vif = conf->vif;
2722
2723         spin_unlock_irqrestore(&priv->lock, flags);
2724
2725         mutex_lock(&priv->mutex);
2726
2727         if (conf->mac_addr) {
2728                 IWL_DEBUG_MAC80211("Set %pM\n", conf->mac_addr);
2729                 memcpy(priv->mac_addr, conf->mac_addr, ETH_ALEN);
2730         }
2731
2732         if (iwl4965_set_mode(priv, conf->type) == -EAGAIN)
2733                 /* we are not ready, will run again when ready */
2734                 set_bit(STATUS_MODE_PENDING, &priv->status);
2735
2736         mutex_unlock(&priv->mutex);
2737
2738         IWL_DEBUG_MAC80211("leave\n");
2739         return 0;
2740 }
2741
2742 /**
2743  * iwl4965_mac_config - mac80211 config callback
2744  *
2745  * We ignore conf->flags & IEEE80211_CONF_SHORT_SLOT_TIME since it seems to
2746  * be set inappropriately and the driver currently sets the hardware up to
2747  * use it whenever needed.
2748  */
2749 static int iwl4965_mac_config(struct ieee80211_hw *hw, u32 changed)
2750 {
2751         struct iwl_priv *priv = hw->priv;
2752         const struct iwl_channel_info *ch_info;
2753         struct ieee80211_conf *conf = &hw->conf;
2754         unsigned long flags;
2755         int ret = 0;
2756         u16 channel;
2757
2758         mutex_lock(&priv->mutex);
2759         IWL_DEBUG_MAC80211("enter to channel %d\n", conf->channel->hw_value);
2760
2761         priv->current_ht_config.is_ht = conf->ht.enabled;
2762
2763         if (conf->radio_enabled && iwl_radio_kill_sw_enable_radio(priv)) {
2764                 IWL_DEBUG_MAC80211("leave - RF-KILL - waiting for uCode\n");
2765                 goto out;
2766         }
2767
2768         if (!conf->radio_enabled)
2769                 iwl_radio_kill_sw_disable_radio(priv);
2770
2771         if (!iwl_is_ready(priv)) {
2772                 IWL_DEBUG_MAC80211("leave - not ready\n");
2773                 ret = -EIO;
2774                 goto out;
2775         }
2776
2777         if (unlikely(!priv->cfg->mod_params->disable_hw_scan &&
2778                      test_bit(STATUS_SCANNING, &priv->status))) {
2779                 IWL_DEBUG_MAC80211("leave - scanning\n");
2780                 mutex_unlock(&priv->mutex);
2781                 return 0;
2782         }
2783
2784         channel = ieee80211_frequency_to_channel(conf->channel->center_freq);
2785         ch_info = iwl_get_channel_info(priv, conf->channel->band, channel);
2786         if (!is_channel_valid(ch_info)) {
2787                 IWL_DEBUG_MAC80211("leave - invalid channel\n");
2788                 ret = -EINVAL;
2789                 goto out;
2790         }
2791
2792         if (priv->iw_mode == NL80211_IFTYPE_ADHOC &&
2793             !is_channel_ibss(ch_info)) {
2794                 IWL_ERROR("channel %d in band %d not IBSS channel\n",
2795                         conf->channel->hw_value, conf->channel->band);
2796                 ret = -EINVAL;
2797                 goto out;
2798         }
2799
2800         spin_lock_irqsave(&priv->lock, flags);
2801
2802
2803         /* if we are switching from ht to 2.4 clear flags
2804          * from any ht related info since 2.4 does not
2805          * support ht */
2806         if ((le16_to_cpu(priv->staging_rxon.channel) != channel)
2807 #ifdef IEEE80211_CONF_CHANNEL_SWITCH
2808             && !(conf->flags & IEEE80211_CONF_CHANNEL_SWITCH)
2809 #endif
2810         )
2811                 priv->staging_rxon.flags = 0;
2812
2813         iwl_set_rxon_channel(priv, conf->channel);
2814
2815         iwl_set_flags_for_band(priv, conf->channel->band);
2816
2817         /* The list of supported rates and rate mask can be different
2818          * for each band; since the band may have changed, reset
2819          * the rate mask to what mac80211 lists */
2820         iwl4965_set_rate(priv);
2821
2822         spin_unlock_irqrestore(&priv->lock, flags);
2823
2824 #ifdef IEEE80211_CONF_CHANNEL_SWITCH
2825         if (conf->flags & IEEE80211_CONF_CHANNEL_SWITCH) {
2826                 iwl4965_hw_channel_switch(priv, conf->channel);
2827                 goto out;
2828         }
2829 #endif
2830
2831         if (!conf->radio_enabled) {
2832                 IWL_DEBUG_MAC80211("leave - radio disabled\n");
2833                 goto out;
2834         }
2835
2836         if (iwl_is_rfkill(priv)) {
2837                 IWL_DEBUG_MAC80211("leave - RF kill\n");
2838                 ret = -EIO;
2839                 goto out;
2840         }
2841
2842         if (conf->flags & IEEE80211_CONF_PS)
2843                 ret = iwl_power_set_user_mode(priv, IWL_POWER_INDEX_3);
2844         else
2845                 ret = iwl_power_set_user_mode(priv, IWL_POWER_MODE_CAM);
2846         if (ret)
2847                 IWL_DEBUG_MAC80211("Error setting power level\n");
2848
2849         IWL_DEBUG_MAC80211("TX Power old=%d new=%d\n",
2850                            priv->tx_power_user_lmt, conf->power_level);
2851
2852         iwl_set_tx_power(priv, conf->power_level, false);
2853
2854         iwl4965_set_rate(priv);
2855
2856         if (memcmp(&priv->active_rxon,
2857                    &priv->staging_rxon, sizeof(priv->staging_rxon)))
2858                 iwl4965_commit_rxon(priv);
2859         else
2860                 IWL_DEBUG_INFO("No re-sending same RXON configuration.\n");
2861
2862         IWL_DEBUG_MAC80211("leave\n");
2863
2864 out:
2865         mutex_unlock(&priv->mutex);
2866         return ret;
2867 }
2868
2869 static void iwl4965_config_ap(struct iwl_priv *priv)
2870 {
2871         int ret = 0;
2872         unsigned long flags;
2873
2874         if (test_bit(STATUS_EXIT_PENDING, &priv->status))
2875                 return;
2876
2877         /* The following should be done only at AP bring up */
2878         if (!iwl_is_associated(priv)) {
2879
2880                 /* RXON - unassoc (to set timing command) */
2881                 priv->staging_rxon.filter_flags &= ~RXON_FILTER_ASSOC_MSK;
2882                 iwl4965_commit_rxon(priv);
2883
2884                 /* RXON Timing */
2885                 iwl_setup_rxon_timing(priv);
2886                 ret = iwl_send_cmd_pdu(priv, REPLY_RXON_TIMING,
2887                                 sizeof(priv->rxon_timing), &priv->rxon_timing);
2888                 if (ret)
2889                         IWL_WARNING("REPLY_RXON_TIMING failed - "
2890                                         "Attempting to continue.\n");
2891
2892                 iwl_set_rxon_chain(priv);
2893
2894                 /* FIXME: what should be the assoc_id for AP? */
2895                 priv->staging_rxon.assoc_id = cpu_to_le16(priv->assoc_id);
2896                 if (priv->assoc_capability & WLAN_CAPABILITY_SHORT_PREAMBLE)
2897                         priv->staging_rxon.flags |=
2898                                 RXON_FLG_SHORT_PREAMBLE_MSK;
2899                 else
2900                         priv->staging_rxon.flags &=
2901                                 ~RXON_FLG_SHORT_PREAMBLE_MSK;
2902
2903                 if (priv->staging_rxon.flags & RXON_FLG_BAND_24G_MSK) {
2904                         if (priv->assoc_capability &
2905                                 WLAN_CAPABILITY_SHORT_SLOT_TIME)
2906                                 priv->staging_rxon.flags |=
2907                                         RXON_FLG_SHORT_SLOT_MSK;
2908                         else
2909                                 priv->staging_rxon.flags &=
2910                                         ~RXON_FLG_SHORT_SLOT_MSK;
2911
2912                         if (priv->iw_mode == NL80211_IFTYPE_ADHOC)
2913                                 priv->staging_rxon.flags &=
2914                                         ~RXON_FLG_SHORT_SLOT_MSK;
2915                 }
2916                 /* restore RXON assoc */
2917                 priv->staging_rxon.filter_flags |= RXON_FILTER_ASSOC_MSK;
2918                 iwl4965_commit_rxon(priv);
2919                 spin_lock_irqsave(&priv->lock, flags);
2920                 iwl_activate_qos(priv, 1);
2921                 spin_unlock_irqrestore(&priv->lock, flags);
2922                 iwl_rxon_add_station(priv, iwl_bcast_addr, 0);
2923         }
2924         iwl4965_send_beacon_cmd(priv);
2925
2926         /* FIXME - we need to add code here to detect a totally new
2927          * configuration, reset the AP, unassoc, rxon timing, assoc,
2928          * clear sta table, add BCAST sta... */
2929 }
2930
2931 /* temporary */
2932 static int iwl4965_mac_beacon_update(struct ieee80211_hw *hw, struct sk_buff *skb);
2933
2934 static int iwl4965_mac_config_interface(struct ieee80211_hw *hw,
2935                                         struct ieee80211_vif *vif,
2936                                     struct ieee80211_if_conf *conf)
2937 {
2938         struct iwl_priv *priv = hw->priv;
2939         unsigned long flags;
2940         int rc;
2941
2942         if (conf == NULL)
2943                 return -EIO;
2944
2945         if (priv->vif != vif) {
2946                 IWL_DEBUG_MAC80211("leave - priv->vif != vif\n");
2947                 return 0;
2948         }
2949
2950         if (priv->iw_mode == NL80211_IFTYPE_ADHOC &&
2951             conf->changed & IEEE80211_IFCC_BEACON) {
2952                 struct sk_buff *beacon = ieee80211_beacon_get(hw, vif);
2953                 if (!beacon)
2954                         return -ENOMEM;
2955                 rc = iwl4965_mac_beacon_update(hw, beacon);
2956                 if (rc)
2957                         return rc;
2958         }
2959
2960         if ((priv->iw_mode == NL80211_IFTYPE_AP) &&
2961             (!conf->ssid_len)) {
2962                 IWL_DEBUG_MAC80211
2963                     ("Leaving in AP mode because HostAPD is not ready.\n");
2964                 return 0;
2965         }
2966
2967         if (!iwl_is_alive(priv))
2968                 return -EAGAIN;
2969
2970         mutex_lock(&priv->mutex);
2971
2972         if (conf->bssid)
2973                 IWL_DEBUG_MAC80211("bssid: %pM\n", conf->bssid);
2974
2975 /*
2976  * very dubious code was here; the probe filtering flag is never set:
2977  *
2978         if (unlikely(test_bit(STATUS_SCANNING, &priv->status)) &&
2979             !(priv->hw->flags & IEEE80211_HW_NO_PROBE_FILTERING)) {
2980  */
2981
2982         if (priv->iw_mode == NL80211_IFTYPE_AP) {
2983                 if (!conf->bssid) {
2984                         conf->bssid = priv->mac_addr;
2985                         memcpy(priv->bssid, priv->mac_addr, ETH_ALEN);
2986                         IWL_DEBUG_MAC80211("bssid was set to: %pM\n",
2987                                            conf->bssid);
2988                 }
2989                 if (priv->ibss_beacon)
2990                         dev_kfree_skb(priv->ibss_beacon);
2991
2992                 priv->ibss_beacon = ieee80211_beacon_get(hw, vif);
2993         }
2994
2995         if (iwl_is_rfkill(priv))
2996                 goto done;
2997
2998         if (conf->bssid && !is_zero_ether_addr(conf->bssid) &&
2999             !is_multicast_ether_addr(conf->bssid)) {
3000                 /* If there is currently a HW scan going on in the background
3001                  * then we need to cancel it else the RXON below will fail. */
3002                 if (iwl_scan_cancel_timeout(priv, 100)) {
3003                         IWL_WARNING("Aborted scan still in progress "
3004                                     "after 100ms\n");
3005                         IWL_DEBUG_MAC80211("leaving - scan abort failed.\n");
3006                         mutex_unlock(&priv->mutex);
3007                         return -EAGAIN;
3008                 }
3009                 memcpy(priv->staging_rxon.bssid_addr, conf->bssid, ETH_ALEN);
3010
3011                 /* TODO: Audit driver for usage of these members and see
3012                  * if mac80211 deprecates them (priv->bssid looks like it
3013                  * shouldn't be there, but I haven't scanned the IBSS code
3014                  * to verify) - jpk */
3015                 memcpy(priv->bssid, conf->bssid, ETH_ALEN);
3016
3017                 if (priv->iw_mode == NL80211_IFTYPE_AP)
3018                         iwl4965_config_ap(priv);
3019                 else {
3020                         rc = iwl4965_commit_rxon(priv);
3021                         if ((priv->iw_mode == NL80211_IFTYPE_STATION) && rc)
3022                                 iwl_rxon_add_station(
3023                                         priv, priv->active_rxon.bssid_addr, 1);
3024                 }
3025
3026         } else {
3027                 iwl_scan_cancel_timeout(priv, 100);
3028                 priv->staging_rxon.filter_flags &= ~RXON_FILTER_ASSOC_MSK;
3029                 iwl4965_commit_rxon(priv);
3030         }
3031
3032  done:
3033         spin_lock_irqsave(&priv->lock, flags);
3034         if (!conf->ssid_len)
3035                 memset(priv->essid, 0, IW_ESSID_MAX_SIZE);
3036         else
3037                 memcpy(priv->essid, conf->ssid, conf->ssid_len);
3038
3039         priv->essid_len = conf->ssid_len;
3040         spin_unlock_irqrestore(&priv->lock, flags);
3041
3042         IWL_DEBUG_MAC80211("leave\n");
3043         mutex_unlock(&priv->mutex);
3044
3045         return 0;
3046 }
3047
3048 static void iwl4965_configure_filter(struct ieee80211_hw *hw,
3049                                  unsigned int changed_flags,
3050                                  unsigned int *total_flags,
3051                                  int mc_count, struct dev_addr_list *mc_list)
3052 {
3053         struct iwl_priv *priv = hw->priv;
3054
3055         if (changed_flags & (*total_flags) & FIF_OTHER_BSS) {
3056                 IWL_DEBUG_MAC80211("Enter: type %d (0x%x, 0x%x)\n",
3057                                    NL80211_IFTYPE_MONITOR,
3058                                    changed_flags, *total_flags);
3059                 /* queue work 'cuz mac80211 is holding a lock which
3060                  * prevents us from issuing (synchronous) f/w cmds */
3061                 queue_work(priv->workqueue, &priv->set_monitor);
3062         }
3063         *total_flags &= FIF_OTHER_BSS | FIF_ALLMULTI |
3064                         FIF_BCN_PRBRESP_PROMISC | FIF_CONTROL;
3065 }
3066
3067 static void iwl4965_mac_remove_interface(struct ieee80211_hw *hw,
3068                                      struct ieee80211_if_init_conf *conf)
3069 {
3070         struct iwl_priv *priv = hw->priv;
3071
3072         IWL_DEBUG_MAC80211("enter\n");
3073
3074         mutex_lock(&priv->mutex);
3075
3076         if (iwl_is_ready_rf(priv)) {
3077                 iwl_scan_cancel_timeout(priv, 100);
3078                 priv->staging_rxon.filter_flags &= ~RXON_FILTER_ASSOC_MSK;
3079                 iwl4965_commit_rxon(priv);
3080         }
3081         if (priv->vif == conf->vif) {
3082                 priv->vif = NULL;
3083                 memset(priv->bssid, 0, ETH_ALEN);
3084                 memset(priv->essid, 0, IW_ESSID_MAX_SIZE);
3085                 priv->essid_len = 0;
3086         }
3087         mutex_unlock(&priv->mutex);
3088
3089         IWL_DEBUG_MAC80211("leave\n");
3090
3091 }
3092
3093 #define IWL_DELAY_NEXT_SCAN_AFTER_ASSOC (HZ*6)
3094 static void iwl4965_bss_info_changed(struct ieee80211_hw *hw,
3095                                      struct ieee80211_vif *vif,
3096                                      struct ieee80211_bss_conf *bss_conf,
3097                                      u32 changes)
3098 {
3099         struct iwl_priv *priv = hw->priv;
3100
3101         IWL_DEBUG_MAC80211("changes = 0x%X\n", changes);
3102
3103         if (changes & BSS_CHANGED_ERP_PREAMBLE) {
3104                 IWL_DEBUG_MAC80211("ERP_PREAMBLE %d\n",
3105                                    bss_conf->use_short_preamble);
3106                 if (bss_conf->use_short_preamble)
3107                         priv->staging_rxon.flags |= RXON_FLG_SHORT_PREAMBLE_MSK;
3108                 else
3109                         priv->staging_rxon.flags &= ~RXON_FLG_SHORT_PREAMBLE_MSK;
3110         }
3111
3112         if (changes & BSS_CHANGED_ERP_CTS_PROT) {
3113                 IWL_DEBUG_MAC80211("ERP_CTS %d\n", bss_conf->use_cts_prot);
3114                 if (bss_conf->use_cts_prot && (priv->band != IEEE80211_BAND_5GHZ))
3115                         priv->staging_rxon.flags |= RXON_FLG_TGG_PROTECT_MSK;
3116                 else
3117                         priv->staging_rxon.flags &= ~RXON_FLG_TGG_PROTECT_MSK;
3118         }
3119
3120         if (changes & BSS_CHANGED_HT) {
3121                 iwl4965_ht_conf(priv, bss_conf);
3122                 iwl_set_rxon_chain(priv);
3123         }
3124
3125         if (changes & BSS_CHANGED_ASSOC) {
3126                 IWL_DEBUG_MAC80211("ASSOC %d\n", bss_conf->assoc);
3127                 /* This should never happen as this function should
3128                  * never be called from interrupt context. */
3129                 if (WARN_ON_ONCE(in_interrupt()))
3130                         return;
3131                 if (bss_conf->assoc) {
3132                         priv->assoc_id = bss_conf->aid;
3133                         priv->beacon_int = bss_conf->beacon_int;
3134                         priv->power_data.dtim_period = bss_conf->dtim_period;
3135                         priv->timestamp = bss_conf->timestamp;
3136                         priv->assoc_capability = bss_conf->assoc_capability;
3137
3138                         /* we have just associated, don't start scan too early
3139                          * leave time for EAPOL exchange to complete
3140                          */
3141                         priv->next_scan_jiffies = jiffies +
3142                                         IWL_DELAY_NEXT_SCAN_AFTER_ASSOC;
3143                         mutex_lock(&priv->mutex);
3144                         iwl4965_post_associate(priv);
3145                         mutex_unlock(&priv->mutex);
3146                 } else {
3147                         priv->assoc_id = 0;
3148                         IWL_DEBUG_MAC80211("DISASSOC %d\n", bss_conf->assoc);
3149                 }
3150         } else if (changes && iwl_is_associated(priv) && priv->assoc_id) {
3151                         IWL_DEBUG_MAC80211("Associated Changes %d\n", changes);
3152                         iwl_send_rxon_assoc(priv);
3153         }
3154
3155 }
3156
3157 static int iwl_mac_hw_scan(struct ieee80211_hw *hw, u8 *ssid, size_t ssid_len)
3158 {
3159         unsigned long flags;
3160         struct iwl_priv *priv = hw->priv;
3161         int ret;
3162
3163         IWL_DEBUG_MAC80211("enter\n");
3164
3165         mutex_lock(&priv->mutex);
3166         spin_lock_irqsave(&priv->lock, flags);
3167
3168         if (!iwl_is_ready_rf(priv)) {
3169                 ret = -EIO;
3170                 IWL_DEBUG_MAC80211("leave - not ready or exit pending\n");
3171                 goto out_unlock;
3172         }
3173
3174         if (priv->iw_mode == NL80211_IFTYPE_AP) {       /* APs don't scan */
3175                 ret = -EIO;
3176                 IWL_ERROR("ERROR: APs don't scan\n");
3177                 goto out_unlock;
3178         }
3179
3180         /* We don't schedule scan within next_scan_jiffies period.
3181          * Avoid scanning during possible EAPOL exchange, return
3182          * success immediately.
3183          */
3184         if (priv->next_scan_jiffies &&
3185             time_after(priv->next_scan_jiffies, jiffies)) {
3186                 IWL_DEBUG_SCAN("scan rejected: within next scan period\n");
3187                 queue_work(priv->workqueue, &priv->scan_completed);
3188                 ret = 0;
3189                 goto out_unlock;
3190         }
3191
3192         /* if we just finished scan ask for delay */
3193         if (iwl_is_associated(priv) && priv->last_scan_jiffies &&
3194             time_after(priv->last_scan_jiffies + IWL_DELAY_NEXT_SCAN, jiffies)) {
3195                 IWL_DEBUG_SCAN("scan rejected: within previous scan period\n");
3196                 queue_work(priv->workqueue, &priv->scan_completed);
3197                 ret = 0;
3198                 goto out_unlock;
3199         }
3200
3201         if (ssid_len) {
3202                 priv->one_direct_scan = 1;
3203                 priv->direct_ssid_len =  min_t(u8, ssid_len, IW_ESSID_MAX_SIZE);
3204                 memcpy(priv->direct_ssid, ssid, priv->direct_ssid_len);
3205         } else {
3206                 priv->one_direct_scan = 0;
3207         }
3208
3209         ret = iwl_scan_initiate(priv);
3210
3211         IWL_DEBUG_MAC80211("leave\n");
3212
3213 out_unlock:
3214         spin_unlock_irqrestore(&priv->lock, flags);
3215         mutex_unlock(&priv->mutex);
3216
3217         return ret;
3218 }
3219
3220 static void iwl4965_mac_update_tkip_key(struct ieee80211_hw *hw,
3221                         struct ieee80211_key_conf *keyconf, const u8 *addr,
3222                         u32 iv32, u16 *phase1key)
3223 {
3224         struct iwl_priv *priv = hw->priv;
3225         u8 sta_id = IWL_INVALID_STATION;
3226         unsigned long flags;
3227         __le16 key_flags = 0;
3228         int i;
3229
3230         IWL_DEBUG_MAC80211("enter\n");
3231
3232         sta_id = iwl_find_station(priv, addr);
3233         if (sta_id == IWL_INVALID_STATION) {
3234                 IWL_DEBUG_MAC80211("leave - %pM not in station map.\n",
3235                                    addr);
3236                 return;
3237         }
3238
3239         iwl_scan_cancel_timeout(priv, 100);
3240
3241         key_flags |= (STA_KEY_FLG_TKIP | STA_KEY_FLG_MAP_KEY_MSK);
3242         key_flags |= cpu_to_le16(keyconf->keyidx << STA_KEY_FLG_KEYID_POS);
3243         key_flags &= ~STA_KEY_FLG_INVALID;
3244
3245         if (sta_id == priv->hw_params.bcast_sta_id)
3246                 key_flags |= STA_KEY_MULTICAST_MSK;
3247
3248         spin_lock_irqsave(&priv->sta_lock, flags);
3249
3250         priv->stations[sta_id].sta.key.key_flags = key_flags;
3251         priv->stations[sta_id].sta.key.tkip_rx_tsc_byte2 = (u8) iv32;
3252
3253         for (i = 0; i < 5; i++)
3254                 priv->stations[sta_id].sta.key.tkip_rx_ttak[i] =
3255                         cpu_to_le16(phase1key[i]);
3256
3257         priv->stations[sta_id].sta.sta.modify_mask = STA_MODIFY_KEY_MASK;
3258         priv->stations[sta_id].sta.mode = STA_CONTROL_MODIFY_MSK;
3259
3260         iwl_send_add_sta(priv, &priv->stations[sta_id].sta, CMD_ASYNC);
3261
3262         spin_unlock_irqrestore(&priv->sta_lock, flags);
3263
3264         IWL_DEBUG_MAC80211("leave\n");
3265 }
3266
3267 static int iwl4965_mac_set_key(struct ieee80211_hw *hw, enum set_key_cmd cmd,
3268                            const u8 *local_addr, const u8 *addr,
3269                            struct ieee80211_key_conf *key)
3270 {
3271         struct iwl_priv *priv = hw->priv;
3272         int ret = 0;
3273         u8 sta_id = IWL_INVALID_STATION;
3274         u8 is_default_wep_key = 0;
3275
3276         IWL_DEBUG_MAC80211("enter\n");
3277
3278         if (priv->hw_params.sw_crypto) {
3279                 IWL_DEBUG_MAC80211("leave - hwcrypto disabled\n");
3280                 return -EOPNOTSUPP;
3281         }
3282
3283         if (is_zero_ether_addr(addr))
3284                 /* only support pairwise keys */
3285                 return -EOPNOTSUPP;
3286
3287         sta_id = iwl_find_station(priv, addr);
3288         if (sta_id == IWL_INVALID_STATION) {
3289                 IWL_DEBUG_MAC80211("leave - %pM not in station map.\n",
3290                                    addr);
3291                 return -EINVAL;
3292
3293         }
3294
3295         mutex_lock(&priv->mutex);
3296         iwl_scan_cancel_timeout(priv, 100);
3297         mutex_unlock(&priv->mutex);
3298
3299         /* If we are getting WEP group key and we didn't receive any key mapping
3300          * so far, we are in legacy wep mode (group key only), otherwise we are
3301          * in 1X mode.
3302          * In legacy wep mode, we use another host command to the uCode */
3303         if (key->alg == ALG_WEP && sta_id == priv->hw_params.bcast_sta_id &&
3304                 priv->iw_mode != NL80211_IFTYPE_AP) {
3305                 if (cmd == SET_KEY)
3306                         is_default_wep_key = !priv->key_mapping_key;
3307                 else
3308                         is_default_wep_key =
3309                                         (key->hw_key_idx == HW_KEY_DEFAULT);
3310         }
3311
3312         switch (cmd) {
3313         case SET_KEY:
3314                 if (is_default_wep_key)
3315                         ret = iwl_set_default_wep_key(priv, key);
3316                 else
3317                         ret = iwl_set_dynamic_key(priv, key, sta_id);
3318
3319                 IWL_DEBUG_MAC80211("enable hwcrypto key\n");
3320                 break;
3321         case DISABLE_KEY:
3322                 if (is_default_wep_key)
3323                         ret = iwl_remove_default_wep_key(priv, key);
3324                 else
3325                         ret = iwl_remove_dynamic_key(priv, key, sta_id);
3326
3327                 IWL_DEBUG_MAC80211("disable hwcrypto key\n");
3328                 break;
3329         default:
3330                 ret = -EINVAL;
3331         }
3332
3333         IWL_DEBUG_MAC80211("leave\n");
3334
3335         return ret;
3336 }
3337
3338 static int iwl4965_mac_conf_tx(struct ieee80211_hw *hw, u16 queue,
3339                            const struct ieee80211_tx_queue_params *params)
3340 {
3341         struct iwl_priv *priv = hw->priv;
3342         unsigned long flags;
3343         int q;
3344
3345         IWL_DEBUG_MAC80211("enter\n");
3346
3347         if (!iwl_is_ready_rf(priv)) {
3348                 IWL_DEBUG_MAC80211("leave - RF not ready\n");
3349                 return -EIO;
3350         }
3351
3352         if (queue >= AC_NUM) {
3353                 IWL_DEBUG_MAC80211("leave - queue >= AC_NUM %d\n", queue);
3354                 return 0;
3355         }
3356
3357         if (!priv->qos_data.qos_enable) {
3358                 priv->qos_data.qos_active = 0;
3359                 IWL_DEBUG_MAC80211("leave - qos not enabled\n");
3360                 return 0;
3361         }
3362         q = AC_NUM - 1 - queue;
3363
3364         spin_lock_irqsave(&priv->lock, flags);
3365
3366         priv->qos_data.def_qos_parm.ac[q].cw_min = cpu_to_le16(params->cw_min);
3367         priv->qos_data.def_qos_parm.ac[q].cw_max = cpu_to_le16(params->cw_max);
3368         priv->qos_data.def_qos_parm.ac[q].aifsn = params->aifs;
3369         priv->qos_data.def_qos_parm.ac[q].edca_txop =
3370                         cpu_to_le16((params->txop * 32));
3371
3372         priv->qos_data.def_qos_parm.ac[q].reserved1 = 0;
3373         priv->qos_data.qos_active = 1;
3374
3375         if (priv->iw_mode == NL80211_IFTYPE_AP)
3376                 iwl_activate_qos(priv, 1);
3377         else if (priv->assoc_id && iwl_is_associated(priv))
3378                 iwl_activate_qos(priv, 0);
3379
3380         spin_unlock_irqrestore(&priv->lock, flags);
3381
3382         IWL_DEBUG_MAC80211("leave\n");
3383         return 0;
3384 }
3385
3386 static int iwl4965_mac_ampdu_action(struct ieee80211_hw *hw,
3387                              enum ieee80211_ampdu_mlme_action action,
3388                              struct ieee80211_sta *sta, u16 tid, u16 *ssn)
3389 {
3390         struct iwl_priv *priv = hw->priv;
3391
3392         IWL_DEBUG_HT("A-MPDU action on addr %pM tid %d\n",
3393                      sta->addr, tid);
3394
3395         if (!(priv->cfg->sku & IWL_SKU_N))
3396                 return -EACCES;
3397
3398         switch (action) {
3399         case IEEE80211_AMPDU_RX_START:
3400                 IWL_DEBUG_HT("start Rx\n");
3401                 return iwl_rx_agg_start(priv, sta->addr, tid, *ssn);
3402         case IEEE80211_AMPDU_RX_STOP:
3403                 IWL_DEBUG_HT("stop Rx\n");
3404                 return iwl_rx_agg_stop(priv, sta->addr, tid);
3405         case IEEE80211_AMPDU_TX_START:
3406                 IWL_DEBUG_HT("start Tx\n");
3407                 return iwl_tx_agg_start(priv, sta->addr, tid, ssn);
3408         case IEEE80211_AMPDU_TX_STOP:
3409                 IWL_DEBUG_HT("stop Tx\n");
3410                 return iwl_tx_agg_stop(priv, sta->addr, tid);
3411         default:
3412                 IWL_DEBUG_HT("unknown\n");
3413                 return -EINVAL;
3414                 break;
3415         }
3416         return 0;
3417 }
3418 static int iwl4965_mac_get_tx_stats(struct ieee80211_hw *hw,
3419                                 struct ieee80211_tx_queue_stats *stats)
3420 {
3421         struct iwl_priv *priv = hw->priv;
3422         int i, avail;
3423         struct iwl_tx_queue *txq;
3424         struct iwl_queue *q;
3425         unsigned long flags;
3426
3427         IWL_DEBUG_MAC80211("enter\n");
3428
3429         if (!iwl_is_ready_rf(priv)) {
3430                 IWL_DEBUG_MAC80211("leave - RF not ready\n");
3431                 return -EIO;
3432         }
3433
3434         spin_lock_irqsave(&priv->lock, flags);
3435
3436         for (i = 0; i < AC_NUM; i++) {
3437                 txq = &priv->txq[i];
3438                 q = &txq->q;
3439                 avail = iwl_queue_space(q);
3440
3441                 stats[i].len = q->n_window - avail;
3442                 stats[i].limit = q->n_window - q->high_mark;
3443                 stats[i].count = q->n_window;
3444
3445         }
3446         spin_unlock_irqrestore(&priv->lock, flags);
3447
3448         IWL_DEBUG_MAC80211("leave\n");
3449
3450         return 0;
3451 }
3452
3453 static int iwl4965_mac_get_stats(struct ieee80211_hw *hw,
3454                              struct ieee80211_low_level_stats *stats)
3455 {
3456         struct iwl_priv *priv = hw->priv;
3457
3458         priv = hw->priv;
3459         IWL_DEBUG_MAC80211("enter\n");
3460         IWL_DEBUG_MAC80211("leave\n");
3461
3462         return 0;
3463 }
3464
3465 static void iwl4965_mac_reset_tsf(struct ieee80211_hw *hw)
3466 {
3467         struct iwl_priv *priv = hw->priv;
3468         unsigned long flags;
3469
3470         mutex_lock(&priv->mutex);
3471         IWL_DEBUG_MAC80211("enter\n");
3472
3473         spin_lock_irqsave(&priv->lock, flags);
3474         memset(&priv->current_ht_config, 0, sizeof(struct iwl_ht_info));
3475         spin_unlock_irqrestore(&priv->lock, flags);
3476
3477         iwl_reset_qos(priv);
3478
3479         spin_lock_irqsave(&priv->lock, flags);
3480         priv->assoc_id = 0;
3481         priv->assoc_capability = 0;
3482         priv->assoc_station_added = 0;
3483
3484         /* new association get rid of ibss beacon skb */
3485         if (priv->ibss_beacon)
3486                 dev_kfree_skb(priv->ibss_beacon);
3487
3488         priv->ibss_beacon = NULL;
3489
3490         priv->beacon_int = priv->hw->conf.beacon_int;
3491         priv->timestamp = 0;
3492         if ((priv->iw_mode == NL80211_IFTYPE_STATION))
3493                 priv->beacon_int = 0;
3494
3495         spin_unlock_irqrestore(&priv->lock, flags);
3496
3497         if (!iwl_is_ready_rf(priv)) {
3498                 IWL_DEBUG_MAC80211("leave - not ready\n");
3499                 mutex_unlock(&priv->mutex);
3500                 return;
3501         }
3502
3503         /* we are restarting association process
3504          * clear RXON_FILTER_ASSOC_MSK bit
3505          */
3506         if (priv->iw_mode != NL80211_IFTYPE_AP) {
3507                 iwl_scan_cancel_timeout(priv, 100);
3508                 priv->staging_rxon.filter_flags &= ~RXON_FILTER_ASSOC_MSK;
3509                 iwl4965_commit_rxon(priv);
3510         }
3511
3512         iwl_power_update_mode(priv, 0);
3513
3514         /* Per mac80211.h: This is only used in IBSS mode... */
3515         if (priv->iw_mode != NL80211_IFTYPE_ADHOC) {
3516
3517                 /* switch to CAM during association period.
3518                  * the ucode will block any association/authentication
3519                  * frome during assiciation period if it can not hear
3520                  * the AP because of PM. the timer enable PM back is
3521                  * association do not complete
3522                  */
3523                 if (priv->hw->conf.channel->flags & (IEEE80211_CHAN_PASSIVE_SCAN |
3524                                                      IEEE80211_CHAN_RADAR))
3525                                 iwl_power_disable_management(priv, 3000);
3526
3527                 IWL_DEBUG_MAC80211("leave - not in IBSS\n");
3528                 mutex_unlock(&priv->mutex);
3529                 return;
3530         }
3531
3532         iwl4965_set_rate(priv);
3533
3534         mutex_unlock(&priv->mutex);
3535
3536         IWL_DEBUG_MAC80211("leave\n");
3537 }
3538
3539 static int iwl4965_mac_beacon_update(struct ieee80211_hw *hw, struct sk_buff *skb)
3540 {
3541         struct iwl_priv *priv = hw->priv;
3542         unsigned long flags;
3543         __le64 timestamp;
3544
3545         mutex_lock(&priv->mutex);
3546         IWL_DEBUG_MAC80211("enter\n");
3547
3548         if (!iwl_is_ready_rf(priv)) {
3549                 IWL_DEBUG_MAC80211("leave - RF not ready\n");
3550                 mutex_unlock(&priv->mutex);
3551                 return -EIO;
3552         }
3553
3554         if (priv->iw_mode != NL80211_IFTYPE_ADHOC) {
3555                 IWL_DEBUG_MAC80211("leave - not IBSS\n");
3556                 mutex_unlock(&priv->mutex);
3557                 return -EIO;
3558         }
3559
3560         spin_lock_irqsave(&priv->lock, flags);
3561
3562         if (priv->ibss_beacon)
3563                 dev_kfree_skb(priv->ibss_beacon);
3564
3565         priv->ibss_beacon = skb;
3566
3567         priv->assoc_id = 0;
3568         timestamp = ((struct ieee80211_mgmt *)skb->data)->u.beacon.timestamp;
3569         priv->timestamp = le64_to_cpu(timestamp);
3570
3571         IWL_DEBUG_MAC80211("leave\n");
3572         spin_unlock_irqrestore(&priv->lock, flags);
3573
3574         iwl_reset_qos(priv);
3575
3576         iwl4965_post_associate(priv);
3577
3578         mutex_unlock(&priv->mutex);
3579
3580         return 0;
3581 }
3582
3583 /*****************************************************************************
3584  *
3585  * sysfs attributes
3586  *
3587  *****************************************************************************/
3588
3589 #ifdef CONFIG_IWLWIFI_DEBUG
3590
3591 /*
3592  * The following adds a new attribute to the sysfs representation
3593  * of this device driver (i.e. a new file in /sys/bus/pci/drivers/iwl/)
3594  * used for controlling the debug level.
3595  *
3596  * See the level definitions in iwl for details.
3597  */
3598
3599 static ssize_t show_debug_level(struct device *d,
3600                                 struct device_attribute *attr, char *buf)
3601 {
3602         struct iwl_priv *priv = d->driver_data;
3603
3604         return sprintf(buf, "0x%08X\n", priv->debug_level);
3605 }
3606 static ssize_t store_debug_level(struct device *d,
3607                                 struct device_attribute *attr,
3608                                  const char *buf, size_t count)
3609 {
3610         struct iwl_priv *priv = d->driver_data;
3611         unsigned long val;
3612         int ret;
3613
3614         ret = strict_strtoul(buf, 0, &val);
3615         if (ret)
3616                 printk(KERN_INFO DRV_NAME
3617                        ": %s is not in hex or decimal form.\n", buf);
3618         else
3619                 priv->debug_level = val;
3620
3621         return strnlen(buf, count);
3622 }
3623
3624 static DEVICE_ATTR(debug_level, S_IWUSR | S_IRUGO,
3625                         show_debug_level, store_debug_level);
3626
3627
3628 #endif /* CONFIG_IWLWIFI_DEBUG */
3629
3630
3631 static ssize_t show_version(struct device *d,
3632                                 struct device_attribute *attr, char *buf)
3633 {
3634         struct iwl_priv *priv = d->driver_data;
3635         struct iwl_alive_resp *palive = &priv->card_alive;
3636         ssize_t pos = 0;
3637         u16 eeprom_ver;
3638
3639         if (palive->is_valid)
3640                 pos += sprintf(buf + pos,
3641                                 "fw version: 0x%01X.0x%01X.0x%01X.0x%01X\n"
3642                                 "fw type: 0x%01X 0x%01X\n",
3643                                 palive->ucode_major, palive->ucode_minor,
3644                                 palive->sw_rev[0], palive->sw_rev[1],
3645                                 palive->ver_type, palive->ver_subtype);
3646         else
3647                 pos += sprintf(buf + pos, "fw not loaded\n");
3648
3649         if (priv->eeprom) {
3650                 eeprom_ver = iwl_eeprom_query16(priv, EEPROM_VERSION);
3651                 pos += sprintf(buf + pos, "EEPROM version: 0x%x\n",
3652                                  eeprom_ver);
3653         } else {
3654                 pos += sprintf(buf + pos, "EEPROM not initialzed\n");
3655         }
3656
3657         return pos;
3658 }
3659
3660 static DEVICE_ATTR(version, S_IWUSR | S_IRUGO, show_version, NULL);
3661
3662 static ssize_t show_temperature(struct device *d,
3663                                 struct device_attribute *attr, char *buf)
3664 {
3665         struct iwl_priv *priv = (struct iwl_priv *)d->driver_data;
3666
3667         if (!iwl_is_alive(priv))
3668                 return -EAGAIN;
3669
3670         return sprintf(buf, "%d\n", priv->temperature);
3671 }
3672
3673 static DEVICE_ATTR(temperature, S_IRUGO, show_temperature, NULL);
3674
3675 static ssize_t show_tx_power(struct device *d,
3676                              struct device_attribute *attr, char *buf)
3677 {
3678         struct iwl_priv *priv = (struct iwl_priv *)d->driver_data;
3679         return sprintf(buf, "%d\n", priv->tx_power_user_lmt);
3680 }
3681
3682 static ssize_t store_tx_power(struct device *d,
3683                               struct device_attribute *attr,
3684                               const char *buf, size_t count)
3685 {
3686         struct iwl_priv *priv = (struct iwl_priv *)d->driver_data;
3687         unsigned long val;
3688         int ret;
3689
3690         ret = strict_strtoul(buf, 10, &val);
3691         if (ret)
3692                 printk(KERN_INFO DRV_NAME
3693                        ": %s is not in decimal form.\n", buf);
3694         else
3695                 iwl_set_tx_power(priv, val, false);
3696
3697         return count;
3698 }
3699
3700 static DEVICE_ATTR(tx_power, S_IWUSR | S_IRUGO, show_tx_power, store_tx_power);
3701
3702 static ssize_t show_flags(struct device *d,
3703                           struct device_attribute *attr, char *buf)
3704 {
3705         struct iwl_priv *priv = (struct iwl_priv *)d->driver_data;
3706
3707         return sprintf(buf, "0x%04X\n", priv->active_rxon.flags);
3708 }
3709
3710 static ssize_t store_flags(struct device *d,
3711                            struct device_attribute *attr,
3712                            const char *buf, size_t count)
3713 {
3714         struct iwl_priv *priv = (struct iwl_priv *)d->driver_data;
3715         unsigned long val;
3716         u32 flags;
3717         int ret = strict_strtoul(buf, 0, &val);
3718         if (ret)
3719                 return ret;
3720         flags = (u32)val;
3721
3722         mutex_lock(&priv->mutex);
3723         if (le32_to_cpu(priv->staging_rxon.flags) != flags) {
3724                 /* Cancel any currently running scans... */
3725                 if (iwl_scan_cancel_timeout(priv, 100))
3726                         IWL_WARNING("Could not cancel scan.\n");
3727                 else {
3728                         IWL_DEBUG_INFO("Commit rxon.flags = 0x%04X\n", flags);
3729                         priv->staging_rxon.flags = cpu_to_le32(flags);
3730                         iwl4965_commit_rxon(priv);
3731                 }
3732         }
3733         mutex_unlock(&priv->mutex);
3734
3735         return count;
3736 }
3737
3738 static DEVICE_ATTR(flags, S_IWUSR | S_IRUGO, show_flags, store_flags);
3739
3740 static ssize_t show_filter_flags(struct device *d,
3741                                  struct device_attribute *attr, char *buf)
3742 {
3743         struct iwl_priv *priv = (struct iwl_priv *)d->driver_data;
3744
3745         return sprintf(buf, "0x%04X\n",
3746                 le32_to_cpu(priv->active_rxon.filter_flags));
3747 }
3748
3749 static ssize_t store_filter_flags(struct device *d,
3750                                   struct device_attribute *attr,
3751                                   const char *buf, size_t count)
3752 {
3753         struct iwl_priv *priv = (struct iwl_priv *)d->driver_data;
3754         unsigned long val;
3755         u32 filter_flags;
3756         int ret = strict_strtoul(buf, 0, &val);
3757         if (ret)
3758                 return ret;
3759         filter_flags = (u32)val;
3760
3761         mutex_lock(&priv->mutex);
3762         if (le32_to_cpu(priv->staging_rxon.filter_flags) != filter_flags) {
3763                 /* Cancel any currently running scans... */
3764                 if (iwl_scan_cancel_timeout(priv, 100))
3765                         IWL_WARNING("Could not cancel scan.\n");
3766                 else {
3767                         IWL_DEBUG_INFO("Committing rxon.filter_flags = "
3768                                        "0x%04X\n", filter_flags);
3769                         priv->staging_rxon.filter_flags =
3770                                 cpu_to_le32(filter_flags);
3771                         iwl4965_commit_rxon(priv);
3772                 }
3773         }
3774         mutex_unlock(&priv->mutex);
3775
3776         return count;
3777 }
3778
3779 static DEVICE_ATTR(filter_flags, S_IWUSR | S_IRUGO, show_filter_flags,
3780                    store_filter_flags);
3781
3782 #ifdef CONFIG_IWLAGN_SPECTRUM_MEASUREMENT
3783
3784 static ssize_t show_measurement(struct device *d,
3785                                 struct device_attribute *attr, char *buf)
3786 {
3787         struct iwl_priv *priv = dev_get_drvdata(d);
3788         struct iwl4965_spectrum_notification measure_report;
3789         u32 size = sizeof(measure_report), len = 0, ofs = 0;
3790         u8 *data = (u8 *)&measure_report;
3791         unsigned long flags;
3792
3793         spin_lock_irqsave(&priv->lock, flags);
3794         if (!(priv->measurement_status & MEASUREMENT_READY)) {
3795                 spin_unlock_irqrestore(&priv->lock, flags);
3796                 return 0;
3797         }
3798         memcpy(&measure_report, &priv->measure_report, size);
3799         priv->measurement_status = 0;
3800         spin_unlock_irqrestore(&priv->lock, flags);
3801
3802         while (size && (PAGE_SIZE - len)) {
3803                 hex_dump_to_buffer(data + ofs, size, 16, 1, buf + len,
3804                                    PAGE_SIZE - len, 1);
3805                 len = strlen(buf);
3806                 if (PAGE_SIZE - len)
3807                         buf[len++] = '\n';
3808
3809                 ofs += 16;
3810                 size -= min(size, 16U);
3811         }
3812
3813         return len;
3814 }
3815
3816 static ssize_t store_measurement(struct device *d,
3817                                  struct device_attribute *attr,
3818                                  const char *buf, size_t count)
3819 {
3820         struct iwl_priv *priv = dev_get_drvdata(d);
3821         struct ieee80211_measurement_params params = {
3822                 .channel = le16_to_cpu(priv->active_rxon.channel),
3823                 .start_time = cpu_to_le64(priv->last_tsf),
3824                 .duration = cpu_to_le16(1),
3825         };
3826         u8 type = IWL_MEASURE_BASIC;
3827         u8 buffer[32];
3828         u8 channel;
3829
3830         if (count) {
3831                 char *p = buffer;
3832                 strncpy(buffer, buf, min(sizeof(buffer), count));
3833                 channel = simple_strtoul(p, NULL, 0);
3834                 if (channel)
3835                         params.channel = channel;
3836
3837                 p = buffer;
3838                 while (*p && *p != ' ')
3839                         p++;
3840                 if (*p)
3841                         type = simple_strtoul(p + 1, NULL, 0);
3842         }
3843
3844         IWL_DEBUG_INFO("Invoking measurement of type %d on "
3845                        "channel %d (for '%s')\n", type, params.channel, buf);
3846         iwl4965_get_measurement(priv, &params, type);
3847
3848         return count;
3849 }
3850
3851 static DEVICE_ATTR(measurement, S_IRUSR | S_IWUSR,
3852                    show_measurement, store_measurement);
3853 #endif /* CONFIG_IWLAGN_SPECTRUM_MEASUREMENT */
3854
3855 static ssize_t store_retry_rate(struct device *d,
3856                                 struct device_attribute *attr,
3857                                 const char *buf, size_t count)
3858 {
3859         struct iwl_priv *priv = dev_get_drvdata(d);
3860         long val;
3861         int ret  = strict_strtol(buf, 10, &val);
3862         if (!ret)
3863                 return ret;
3864
3865         priv->retry_rate = (val > 0) ? val : 1;
3866
3867         return count;
3868 }
3869
3870 static ssize_t show_retry_rate(struct device *d,
3871                                struct device_attribute *attr, char *buf)
3872 {
3873         struct iwl_priv *priv = dev_get_drvdata(d);
3874         return sprintf(buf, "%d", priv->retry_rate);
3875 }
3876
3877 static DEVICE_ATTR(retry_rate, S_IWUSR | S_IRUSR, show_retry_rate,
3878                    store_retry_rate);
3879
3880 static ssize_t store_power_level(struct device *d,
3881                                  struct device_attribute *attr,
3882                                  const char *buf, size_t count)
3883 {
3884         struct iwl_priv *priv = dev_get_drvdata(d);
3885         int ret;
3886         unsigned long mode;
3887
3888
3889         mutex_lock(&priv->mutex);
3890
3891         if (!iwl_is_ready(priv)) {
3892                 ret = -EAGAIN;
3893                 goto out;
3894         }
3895
3896         ret = strict_strtoul(buf, 10, &mode);
3897         if (ret)
3898                 goto out;
3899
3900         ret = iwl_power_set_user_mode(priv, mode);
3901         if (ret) {
3902                 IWL_DEBUG_MAC80211("failed setting power mode.\n");
3903                 goto out;
3904         }
3905         ret = count;
3906
3907  out:
3908         mutex_unlock(&priv->mutex);
3909         return ret;
3910 }
3911
3912 static ssize_t show_power_level(struct device *d,
3913                                 struct device_attribute *attr, char *buf)
3914 {
3915         struct iwl_priv *priv = dev_get_drvdata(d);
3916         int mode = priv->power_data.user_power_setting;
3917         int system = priv->power_data.system_power_setting;
3918         int level = priv->power_data.power_mode;
3919         char *p = buf;
3920
3921         switch (system) {
3922         case IWL_POWER_SYS_AUTO:
3923                 p += sprintf(p, "SYSTEM:auto");
3924                 break;
3925         case IWL_POWER_SYS_AC:
3926                 p += sprintf(p, "SYSTEM:ac");
3927                 break;
3928         case IWL_POWER_SYS_BATTERY:
3929                 p += sprintf(p, "SYSTEM:battery");
3930                 break;
3931         }
3932
3933         p += sprintf(p, "\tMODE:%s", (mode < IWL_POWER_AUTO)?"fixed":"auto");
3934         p += sprintf(p, "\tINDEX:%d", level);
3935         p += sprintf(p, "\n");
3936         return p - buf + 1;
3937 }
3938
3939 static DEVICE_ATTR(power_level, S_IWUSR | S_IRUSR, show_power_level,
3940                    store_power_level);
3941
3942 static ssize_t show_channels(struct device *d,
3943                              struct device_attribute *attr, char *buf)
3944 {
3945
3946         struct iwl_priv *priv = dev_get_drvdata(d);
3947         struct ieee80211_channel *channels = NULL;
3948         const struct ieee80211_supported_band *supp_band = NULL;
3949         int len = 0, i;
3950         int count = 0;
3951
3952         if (!test_bit(STATUS_GEO_CONFIGURED, &priv->status))
3953                 return -EAGAIN;
3954
3955         supp_band = iwl_get_hw_mode(priv, IEEE80211_BAND_2GHZ);
3956         channels = supp_band->channels;
3957         count = supp_band->n_channels;
3958
3959         len += sprintf(&buf[len],
3960                         "Displaying %d channels in 2.4GHz band "
3961                         "(802.11bg):\n", count);
3962
3963         for (i = 0; i < count; i++)
3964                 len += sprintf(&buf[len], "%d: %ddBm: BSS%s%s, %s.\n",
3965                                 ieee80211_frequency_to_channel(
3966                                 channels[i].center_freq),
3967                                 channels[i].max_power,
3968                                 channels[i].flags & IEEE80211_CHAN_RADAR ?
3969                                 " (IEEE 802.11h required)" : "",
3970                                 (!(channels[i].flags & IEEE80211_CHAN_NO_IBSS)
3971                                 || (channels[i].flags &
3972                                 IEEE80211_CHAN_RADAR)) ? "" :
3973                                 ", IBSS",
3974                                 channels[i].flags &
3975                                 IEEE80211_CHAN_PASSIVE_SCAN ?
3976                                 "passive only" : "active/passive");
3977
3978         supp_band = iwl_get_hw_mode(priv, IEEE80211_BAND_5GHZ);
3979         channels = supp_band->channels;
3980         count = supp_band->n_channels;
3981
3982         len += sprintf(&buf[len], "Displaying %d channels in 5.2GHz band "
3983                         "(802.11a):\n", count);
3984
3985         for (i = 0; i < count; i++)
3986                 len += sprintf(&buf[len], "%d: %ddBm: BSS%s%s, %s.\n",
3987                                 ieee80211_frequency_to_channel(
3988                                 channels[i].center_freq),
3989                                 channels[i].max_power,
3990                                 channels[i].flags & IEEE80211_CHAN_RADAR ?
3991                                 " (IEEE 802.11h required)" : "",
3992                                 ((channels[i].flags & IEEE80211_CHAN_NO_IBSS)
3993                                 || (channels[i].flags &
3994                                 IEEE80211_CHAN_RADAR)) ? "" :
3995                                 ", IBSS",
3996                                 channels[i].flags &
3997                                 IEEE80211_CHAN_PASSIVE_SCAN ?
3998                                 "passive only" : "active/passive");
3999
4000         return len;
4001 }
4002
4003 static DEVICE_ATTR(channels, S_IRUSR, show_channels, NULL);
4004
4005 static ssize_t show_statistics(struct device *d,
4006                                struct device_attribute *attr, char *buf)
4007 {
4008         struct iwl_priv *priv = dev_get_drvdata(d);
4009         u32 size = sizeof(struct iwl_notif_statistics);
4010         u32 len = 0, ofs = 0;
4011         u8 *data = (u8 *)&priv->statistics;
4012         int rc = 0;
4013
4014         if (!iwl_is_alive(priv))
4015                 return -EAGAIN;
4016
4017         mutex_lock(&priv->mutex);
4018         rc = iwl_send_statistics_request(priv, 0);
4019         mutex_unlock(&priv->mutex);
4020
4021         if (rc) {
4022                 len = sprintf(buf,
4023                               "Error sending statistics request: 0x%08X\n", rc);
4024                 return len;
4025         }
4026
4027         while (size && (PAGE_SIZE - len)) {
4028                 hex_dump_to_buffer(data + ofs, size, 16, 1, buf + len,
4029                                    PAGE_SIZE - len, 1);
4030                 len = strlen(buf);
4031                 if (PAGE_SIZE - len)
4032                         buf[len++] = '\n';
4033
4034                 ofs += 16;
4035                 size -= min(size, 16U);
4036         }
4037
4038         return len;
4039 }
4040
4041 static DEVICE_ATTR(statistics, S_IRUGO, show_statistics, NULL);
4042
4043 static ssize_t show_status(struct device *d,
4044                            struct device_attribute *attr, char *buf)
4045 {
4046         struct iwl_priv *priv = (struct iwl_priv *)d->driver_data;
4047         if (!iwl_is_alive(priv))
4048                 return -EAGAIN;
4049         return sprintf(buf, "0x%08x\n", (int)priv->status);
4050 }
4051
4052 static DEVICE_ATTR(status, S_IRUGO, show_status, NULL);
4053
4054 /*****************************************************************************
4055  *
4056  * driver setup and teardown
4057  *
4058  *****************************************************************************/
4059
4060 static void iwl_setup_deferred_work(struct iwl_priv *priv)
4061 {
4062         priv->workqueue = create_workqueue(DRV_NAME);
4063
4064         init_waitqueue_head(&priv->wait_command_queue);
4065
4066         INIT_WORK(&priv->up, iwl4965_bg_up);
4067         INIT_WORK(&priv->restart, iwl4965_bg_restart);
4068         INIT_WORK(&priv->rx_replenish, iwl4965_bg_rx_replenish);
4069         INIT_WORK(&priv->rf_kill, iwl4965_bg_rf_kill);
4070         INIT_WORK(&priv->beacon_update, iwl4965_bg_beacon_update);
4071         INIT_WORK(&priv->set_monitor, iwl4965_bg_set_monitor);
4072         INIT_WORK(&priv->run_time_calib_work, iwl_bg_run_time_calib_work);
4073         INIT_DELAYED_WORK(&priv->init_alive_start, iwl_bg_init_alive_start);
4074         INIT_DELAYED_WORK(&priv->alive_start, iwl_bg_alive_start);
4075
4076         iwl_setup_scan_deferred_work(priv);
4077         iwl_setup_power_deferred_work(priv);
4078
4079         if (priv->cfg->ops->lib->setup_deferred_work)
4080                 priv->cfg->ops->lib->setup_deferred_work(priv);
4081
4082         init_timer(&priv->statistics_periodic);
4083         priv->statistics_periodic.data = (unsigned long)priv;
4084         priv->statistics_periodic.function = iwl4965_bg_statistics_periodic;
4085
4086         tasklet_init(&priv->irq_tasklet, (void (*)(unsigned long))
4087                      iwl4965_irq_tasklet, (unsigned long)priv);
4088 }
4089
4090 static void iwl_cancel_deferred_work(struct iwl_priv *priv)
4091 {
4092         if (priv->cfg->ops->lib->cancel_deferred_work)
4093                 priv->cfg->ops->lib->cancel_deferred_work(priv);
4094
4095         cancel_delayed_work_sync(&priv->init_alive_start);
4096         cancel_delayed_work(&priv->scan_check);
4097         cancel_delayed_work_sync(&priv->set_power_save);
4098         cancel_delayed_work(&priv->alive_start);
4099         cancel_work_sync(&priv->beacon_update);
4100         del_timer_sync(&priv->statistics_periodic);
4101 }
4102
4103 static struct attribute *iwl4965_sysfs_entries[] = {
4104         &dev_attr_channels.attr,
4105         &dev_attr_flags.attr,
4106         &dev_attr_filter_flags.attr,
4107 #ifdef CONFIG_IWLAGN_SPECTRUM_MEASUREMENT
4108         &dev_attr_measurement.attr,
4109 #endif
4110         &dev_attr_power_level.attr,
4111         &dev_attr_retry_rate.attr,
4112         &dev_attr_statistics.attr,
4113         &dev_attr_status.attr,
4114         &dev_attr_temperature.attr,
4115         &dev_attr_tx_power.attr,
4116 #ifdef CONFIG_IWLWIFI_DEBUG
4117         &dev_attr_debug_level.attr,
4118 #endif
4119         &dev_attr_version.attr,
4120
4121         NULL
4122 };
4123
4124 static struct attribute_group iwl4965_attribute_group = {
4125         .name = NULL,           /* put in device directory */
4126         .attrs = iwl4965_sysfs_entries,
4127 };
4128
4129 static struct ieee80211_ops iwl4965_hw_ops = {
4130         .tx = iwl4965_mac_tx,
4131         .start = iwl4965_mac_start,
4132         .stop = iwl4965_mac_stop,
4133         .add_interface = iwl4965_mac_add_interface,
4134         .remove_interface = iwl4965_mac_remove_interface,
4135         .config = iwl4965_mac_config,
4136         .config_interface = iwl4965_mac_config_interface,
4137         .configure_filter = iwl4965_configure_filter,
4138         .set_key = iwl4965_mac_set_key,
4139         .update_tkip_key = iwl4965_mac_update_tkip_key,
4140         .get_stats = iwl4965_mac_get_stats,
4141         .get_tx_stats = iwl4965_mac_get_tx_stats,
4142         .conf_tx = iwl4965_mac_conf_tx,
4143         .reset_tsf = iwl4965_mac_reset_tsf,
4144         .bss_info_changed = iwl4965_bss_info_changed,
4145         .ampdu_action = iwl4965_mac_ampdu_action,
4146         .hw_scan = iwl_mac_hw_scan
4147 };
4148
4149 static int iwl4965_pci_probe(struct pci_dev *pdev, const struct pci_device_id *ent)
4150 {
4151         int err = 0;
4152         struct iwl_priv *priv;
4153         struct ieee80211_hw *hw;
4154         struct iwl_cfg *cfg = (struct iwl_cfg *)(ent->driver_data);
4155         unsigned long flags;
4156
4157         /************************
4158          * 1. Allocating HW data
4159          ************************/
4160
4161         /* Disabling hardware scan means that mac80211 will perform scans
4162          * "the hard way", rather than using device's scan. */
4163         if (cfg->mod_params->disable_hw_scan) {
4164                 if (cfg->mod_params->debug & IWL_DL_INFO)
4165                         dev_printk(KERN_DEBUG, &(pdev->dev),
4166                                    "Disabling hw_scan\n");
4167                 iwl4965_hw_ops.hw_scan = NULL;
4168         }
4169
4170         hw = iwl_alloc_all(cfg, &iwl4965_hw_ops);
4171         if (!hw) {
4172                 err = -ENOMEM;
4173                 goto out;
4174         }
4175         priv = hw->priv;
4176         /* At this point both hw and priv are allocated. */
4177
4178         SET_IEEE80211_DEV(hw, &pdev->dev);
4179
4180         IWL_DEBUG_INFO("*** LOAD DRIVER ***\n");
4181         priv->cfg = cfg;
4182         priv->pci_dev = pdev;
4183
4184 #ifdef CONFIG_IWLWIFI_DEBUG
4185         priv->debug_level = priv->cfg->mod_params->debug;
4186         atomic_set(&priv->restrict_refcnt, 0);
4187 #endif
4188
4189         /**************************
4190          * 2. Initializing PCI bus
4191          **************************/
4192         if (pci_enable_device(pdev)) {
4193                 err = -ENODEV;
4194                 goto out_ieee80211_free_hw;
4195         }
4196
4197         pci_set_master(pdev);
4198
4199         err = pci_set_dma_mask(pdev, DMA_BIT_MASK(36));
4200         if (!err)
4201                 err = pci_set_consistent_dma_mask(pdev, DMA_BIT_MASK(36));
4202         if (err) {
4203                 err = pci_set_dma_mask(pdev, DMA_BIT_MASK(32));
4204                 if (!err)
4205                         err = pci_set_consistent_dma_mask(pdev, DMA_BIT_MASK(32));
4206                 /* both attempts failed: */
4207                 if (err) {
4208                         printk(KERN_WARNING "%s: No suitable DMA available.\n",
4209                                 DRV_NAME);
4210                         goto out_pci_disable_device;
4211                 }
4212         }
4213
4214         err = pci_request_regions(pdev, DRV_NAME);
4215         if (err)
4216                 goto out_pci_disable_device;
4217
4218         pci_set_drvdata(pdev, priv);
4219
4220
4221         /***********************
4222          * 3. Read REV register
4223          ***********************/
4224         priv->hw_base = pci_iomap(pdev, 0, 0);
4225         if (!priv->hw_base) {
4226                 err = -ENODEV;
4227                 goto out_pci_release_regions;
4228         }
4229
4230         IWL_DEBUG_INFO("pci_resource_len = 0x%08llx\n",
4231                 (unsigned long long) pci_resource_len(pdev, 0));
4232         IWL_DEBUG_INFO("pci_resource_base = %p\n", priv->hw_base);
4233
4234         iwl_hw_detect(priv);
4235         printk(KERN_INFO DRV_NAME
4236                 ": Detected Intel Wireless WiFi Link %s REV=0x%X\n",
4237                 priv->cfg->name, priv->hw_rev);
4238
4239         /* We disable the RETRY_TIMEOUT register (0x41) to keep
4240          * PCI Tx retries from interfering with C3 CPU state */
4241         pci_write_config_byte(pdev, PCI_CFG_RETRY_TIMEOUT, 0x00);
4242
4243         /* amp init */
4244         err = priv->cfg->ops->lib->apm_ops.init(priv);
4245         if (err < 0) {
4246                 IWL_DEBUG_INFO("Failed to init APMG\n");
4247                 goto out_iounmap;
4248         }
4249         /*****************
4250          * 4. Read EEPROM
4251          *****************/
4252         /* Read the EEPROM */
4253         err = iwl_eeprom_init(priv);
4254         if (err) {
4255                 IWL_ERROR("Unable to init EEPROM\n");
4256                 goto out_iounmap;
4257         }
4258         err = iwl_eeprom_check_version(priv);
4259         if (err)
4260                 goto out_iounmap;
4261
4262         /* extract MAC Address */
4263         iwl_eeprom_get_mac(priv, priv->mac_addr);
4264         IWL_DEBUG_INFO("MAC address: %pM\n", priv->mac_addr);
4265         SET_IEEE80211_PERM_ADDR(priv->hw, priv->mac_addr);
4266
4267         /************************
4268          * 5. Setup HW constants
4269          ************************/
4270         if (iwl_set_hw_params(priv)) {
4271                 IWL_ERROR("failed to set hw parameters\n");
4272                 goto out_free_eeprom;
4273         }
4274
4275         /*******************
4276          * 6. Setup priv
4277          *******************/
4278
4279         err = iwl_init_drv(priv);
4280         if (err)
4281                 goto out_free_eeprom;
4282         /* At this point both hw and priv are initialized. */
4283
4284         /**********************************
4285          * 7. Initialize module parameters
4286          **********************************/
4287
4288         /* Disable radio (SW RF KILL) via parameter when loading driver */
4289         if (priv->cfg->mod_params->disable) {
4290                 set_bit(STATUS_RF_KILL_SW, &priv->status);
4291                 IWL_DEBUG_INFO("Radio disabled.\n");
4292         }
4293
4294         /********************
4295          * 8. Setup services
4296          ********************/
4297         spin_lock_irqsave(&priv->lock, flags);
4298         iwl4965_disable_interrupts(priv);
4299         spin_unlock_irqrestore(&priv->lock, flags);
4300
4301         err = sysfs_create_group(&pdev->dev.kobj, &iwl4965_attribute_group);
4302         if (err) {
4303                 IWL_ERROR("failed to create sysfs device attributes\n");
4304                 goto out_uninit_drv;
4305         }
4306
4307
4308         iwl_setup_deferred_work(priv);
4309         iwl_setup_rx_handlers(priv);
4310
4311         /********************
4312          * 9. Conclude
4313          ********************/
4314         pci_save_state(pdev);
4315         pci_disable_device(pdev);
4316
4317         /**********************************
4318          * 10. Setup and register mac80211
4319          **********************************/
4320
4321         err = iwl_setup_mac(priv);
4322         if (err)
4323                 goto out_remove_sysfs;
4324
4325         err = iwl_dbgfs_register(priv, DRV_NAME);
4326         if (err)
4327                 IWL_ERROR("failed to create debugfs files\n");
4328
4329         err = iwl_rfkill_init(priv);
4330         if (err)
4331                 IWL_ERROR("Unable to initialize RFKILL system. "
4332                                   "Ignoring error: %d\n", err);
4333         iwl_power_initialize(priv);
4334         return 0;
4335
4336  out_remove_sysfs:
4337         sysfs_remove_group(&pdev->dev.kobj, &iwl4965_attribute_group);
4338  out_uninit_drv:
4339         iwl_uninit_drv(priv);
4340  out_free_eeprom:
4341         iwl_eeprom_free(priv);
4342  out_iounmap:
4343         pci_iounmap(pdev, priv->hw_base);
4344  out_pci_release_regions:
4345         pci_release_regions(pdev);
4346         pci_set_drvdata(pdev, NULL);
4347  out_pci_disable_device:
4348         pci_disable_device(pdev);
4349  out_ieee80211_free_hw:
4350         ieee80211_free_hw(priv->hw);
4351  out:
4352         return err;
4353 }
4354
4355 static void __devexit iwl4965_pci_remove(struct pci_dev *pdev)
4356 {
4357         struct iwl_priv *priv = pci_get_drvdata(pdev);
4358         unsigned long flags;
4359
4360         if (!priv)
4361                 return;
4362
4363         IWL_DEBUG_INFO("*** UNLOAD DRIVER ***\n");
4364
4365         iwl_dbgfs_unregister(priv);
4366         sysfs_remove_group(&pdev->dev.kobj, &iwl4965_attribute_group);
4367
4368         /* ieee80211_unregister_hw call wil cause iwl4965_mac_stop to
4369          * to be called and iwl4965_down since we are removing the device
4370          * we need to set STATUS_EXIT_PENDING bit.
4371          */
4372         set_bit(STATUS_EXIT_PENDING, &priv->status);
4373         if (priv->mac80211_registered) {
4374                 ieee80211_unregister_hw(priv->hw);
4375                 priv->mac80211_registered = 0;
4376         } else {
4377                 iwl4965_down(priv);
4378         }
4379
4380         /* make sure we flush any pending irq or
4381          * tasklet for the driver
4382          */
4383         spin_lock_irqsave(&priv->lock, flags);
4384         iwl4965_disable_interrupts(priv);
4385         spin_unlock_irqrestore(&priv->lock, flags);
4386
4387         iwl_synchronize_irq(priv);
4388
4389         iwl_rfkill_unregister(priv);
4390         iwl4965_dealloc_ucode_pci(priv);
4391
4392         if (priv->rxq.bd)
4393                 iwl_rx_queue_free(priv, &priv->rxq);
4394         iwl_hw_txq_ctx_free(priv);
4395
4396         iwl_clear_stations_table(priv);
4397         iwl_eeprom_free(priv);
4398
4399
4400         /*netif_stop_queue(dev); */
4401         flush_workqueue(priv->workqueue);
4402
4403         /* ieee80211_unregister_hw calls iwl4965_mac_stop, which flushes
4404          * priv->workqueue... so we can't take down the workqueue
4405          * until now... */
4406         destroy_workqueue(priv->workqueue);
4407         priv->workqueue = NULL;
4408
4409         pci_iounmap(pdev, priv->hw_base);
4410         pci_release_regions(pdev);
4411         pci_disable_device(pdev);
4412         pci_set_drvdata(pdev, NULL);
4413
4414         iwl_uninit_drv(priv);
4415
4416         if (priv->ibss_beacon)
4417                 dev_kfree_skb(priv->ibss_beacon);
4418
4419         ieee80211_free_hw(priv->hw);
4420 }
4421
4422 #ifdef CONFIG_PM
4423
4424 static int iwl4965_pci_suspend(struct pci_dev *pdev, pm_message_t state)
4425 {
4426         struct iwl_priv *priv = pci_get_drvdata(pdev);
4427
4428         if (priv->is_open) {
4429                 set_bit(STATUS_IN_SUSPEND, &priv->status);
4430                 iwl4965_mac_stop(priv->hw);
4431                 priv->is_open = 1;
4432         }
4433
4434         pci_set_power_state(pdev, PCI_D3hot);
4435
4436         return 0;
4437 }
4438
4439 static int iwl4965_pci_resume(struct pci_dev *pdev)
4440 {
4441         struct iwl_priv *priv = pci_get_drvdata(pdev);
4442
4443         pci_set_power_state(pdev, PCI_D0);
4444
4445         if (priv->is_open)
4446                 iwl4965_mac_start(priv->hw);
4447
4448         clear_bit(STATUS_IN_SUSPEND, &priv->status);
4449         return 0;
4450 }
4451
4452 #endif /* CONFIG_PM */
4453
4454 /*****************************************************************************
4455  *
4456  * driver and module entry point
4457  *
4458  *****************************************************************************/
4459
4460 /* Hardware specific file defines the PCI IDs table for that hardware module */
4461 static struct pci_device_id iwl_hw_card_ids[] = {
4462 #ifdef CONFIG_IWL4965
4463         {IWL_PCI_DEVICE(0x4229, PCI_ANY_ID, iwl4965_agn_cfg)},
4464         {IWL_PCI_DEVICE(0x4230, PCI_ANY_ID, iwl4965_agn_cfg)},
4465 #endif /* CONFIG_IWL4965 */
4466 #ifdef CONFIG_IWL5000
4467         {IWL_PCI_DEVICE(0x4232, 0x1205, iwl5100_bg_cfg)},
4468         {IWL_PCI_DEVICE(0x4232, 0x1305, iwl5100_bg_cfg)},
4469         {IWL_PCI_DEVICE(0x4232, 0x1206, iwl5100_abg_cfg)},
4470         {IWL_PCI_DEVICE(0x4232, 0x1306, iwl5100_abg_cfg)},
4471         {IWL_PCI_DEVICE(0x4232, 0x1326, iwl5100_abg_cfg)},
4472         {IWL_PCI_DEVICE(0x4237, 0x1216, iwl5100_abg_cfg)},
4473         {IWL_PCI_DEVICE(0x4232, PCI_ANY_ID, iwl5100_agn_cfg)},
4474         {IWL_PCI_DEVICE(0x4235, PCI_ANY_ID, iwl5300_agn_cfg)},
4475         {IWL_PCI_DEVICE(0x4236, PCI_ANY_ID, iwl5300_agn_cfg)},
4476         {IWL_PCI_DEVICE(0x4237, PCI_ANY_ID, iwl5100_agn_cfg)},
4477 /* 5350 WiFi/WiMax */
4478         {IWL_PCI_DEVICE(0x423A, 0x1001, iwl5350_agn_cfg)},
4479         {IWL_PCI_DEVICE(0x423A, 0x1021, iwl5350_agn_cfg)},
4480         {IWL_PCI_DEVICE(0x423B, 0x1011, iwl5350_agn_cfg)},
4481 #endif /* CONFIG_IWL5000 */
4482         {0}
4483 };
4484 MODULE_DEVICE_TABLE(pci, iwl_hw_card_ids);
4485
4486 static struct pci_driver iwl_driver = {
4487         .name = DRV_NAME,
4488         .id_table = iwl_hw_card_ids,
4489         .probe = iwl4965_pci_probe,
4490         .remove = __devexit_p(iwl4965_pci_remove),
4491 #ifdef CONFIG_PM
4492         .suspend = iwl4965_pci_suspend,
4493         .resume = iwl4965_pci_resume,
4494 #endif
4495 };
4496
4497 static int __init iwl4965_init(void)
4498 {
4499
4500         int ret;
4501         printk(KERN_INFO DRV_NAME ": " DRV_DESCRIPTION ", " DRV_VERSION "\n");
4502         printk(KERN_INFO DRV_NAME ": " DRV_COPYRIGHT "\n");
4503
4504         ret = iwlagn_rate_control_register();
4505         if (ret) {
4506                 IWL_ERROR("Unable to register rate control algorithm: %d\n", ret);
4507                 return ret;
4508         }
4509
4510         ret = pci_register_driver(&iwl_driver);
4511         if (ret) {
4512                 IWL_ERROR("Unable to initialize PCI module\n");
4513                 goto error_register;
4514         }
4515
4516         return ret;
4517
4518 error_register:
4519         iwlagn_rate_control_unregister();
4520         return ret;
4521 }
4522
4523 static void __exit iwl4965_exit(void)
4524 {
4525         pci_unregister_driver(&iwl_driver);
4526         iwlagn_rate_control_unregister();
4527 }
4528
4529 module_exit(iwl4965_exit);
4530 module_init(iwl4965_init);