iwl3945: calculate debugfs isr statistics
[linux-2.6.git] / drivers / net / wireless / iwlwifi / iwl3945-base.c
1 /******************************************************************************
2  *
3  * Copyright(c) 2003 - 2009 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  *  Intel Linux Wireless <ilw@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/ieee80211_radiotap.h>
44 #include <net/lib80211.h>
45 #include <net/mac80211.h>
46
47 #include <asm/div64.h>
48
49 #define DRV_NAME        "iwl3945"
50
51 #include "iwl-fh.h"
52 #include "iwl-3945-fh.h"
53 #include "iwl-commands.h"
54 #include "iwl-sta.h"
55 #include "iwl-3945.h"
56 #include "iwl-helpers.h"
57 #include "iwl-core.h"
58 #include "iwl-dev.h"
59
60 /*
61  * module name, copyright, version, etc.
62  */
63
64 #define DRV_DESCRIPTION \
65 "Intel(R) PRO/Wireless 3945ABG/BG Network Connection driver for Linux"
66
67 #ifdef CONFIG_IWLWIFI_DEBUG
68 #define VD "d"
69 #else
70 #define VD
71 #endif
72
73 #ifdef CONFIG_IWL3945_SPECTRUM_MEASUREMENT
74 #define VS "s"
75 #else
76 #define VS
77 #endif
78
79 #define IWL39_VERSION "1.2.26k" VD VS
80 #define DRV_COPYRIGHT   "Copyright(c) 2003-2009 Intel Corporation"
81 #define DRV_AUTHOR     "<ilw@linux.intel.com>"
82 #define DRV_VERSION     IWL39_VERSION
83
84
85 MODULE_DESCRIPTION(DRV_DESCRIPTION);
86 MODULE_VERSION(DRV_VERSION);
87 MODULE_AUTHOR(DRV_COPYRIGHT " " DRV_AUTHOR);
88 MODULE_LICENSE("GPL");
89
90  /* module parameters */
91 struct iwl_mod_params iwl3945_mod_params = {
92         .num_of_queues = IWL39_MAX_NUM_QUEUES,
93         .sw_crypto = 1,
94         .restart_fw = 1,
95         /* the rest are 0 by default */
96 };
97
98 /*************** STATION TABLE MANAGEMENT ****
99  * mac80211 should be examined to determine if sta_info is duplicating
100  * the functionality provided here
101  */
102
103 /**************************************************************/
104 #if 0 /* temporary disable till we add real remove station */
105 /**
106  * iwl3945_remove_station - Remove driver's knowledge of station.
107  *
108  * NOTE:  This does not remove station from device's station table.
109  */
110 static u8 iwl3945_remove_station(struct iwl_priv *priv, const u8 *addr, int is_ap)
111 {
112         int index = IWL_INVALID_STATION;
113         int i;
114         unsigned long flags;
115
116         spin_lock_irqsave(&priv->sta_lock, flags);
117
118         if (is_ap)
119                 index = IWL_AP_ID;
120         else if (is_broadcast_ether_addr(addr))
121                 index = priv->hw_params.bcast_sta_id;
122         else
123                 for (i = IWL_STA_ID; i < priv->hw_params.max_stations; i++)
124                         if (priv->stations_39[i].used &&
125                             !compare_ether_addr(priv->stations_39[i].sta.sta.addr,
126                                                 addr)) {
127                                 index = i;
128                                 break;
129                         }
130
131         if (unlikely(index == IWL_INVALID_STATION))
132                 goto out;
133
134         if (priv->stations_39[index].used) {
135                 priv->stations_39[index].used = 0;
136                 priv->num_stations--;
137         }
138
139         BUG_ON(priv->num_stations < 0);
140
141 out:
142         spin_unlock_irqrestore(&priv->sta_lock, flags);
143         return 0;
144 }
145 #endif
146
147 /**
148  * iwl3945_clear_stations_table - Clear the driver's station table
149  *
150  * NOTE:  This does not clear or otherwise alter the device's station table.
151  */
152 void iwl3945_clear_stations_table(struct iwl_priv *priv)
153 {
154         unsigned long flags;
155
156         spin_lock_irqsave(&priv->sta_lock, flags);
157
158         priv->num_stations = 0;
159         memset(priv->stations_39, 0, sizeof(priv->stations_39));
160
161         spin_unlock_irqrestore(&priv->sta_lock, flags);
162 }
163
164 /**
165  * iwl3945_add_station - Add station to station tables in driver and device
166  */
167 u8 iwl3945_add_station(struct iwl_priv *priv, const u8 *addr, int is_ap, u8 flags, struct ieee80211_sta_ht_cap *ht_info)
168 {
169         int i;
170         int index = IWL_INVALID_STATION;
171         struct iwl3945_station_entry *station;
172         unsigned long flags_spin;
173         u8 rate;
174
175         spin_lock_irqsave(&priv->sta_lock, flags_spin);
176         if (is_ap)
177                 index = IWL_AP_ID;
178         else if (is_broadcast_ether_addr(addr))
179                 index = priv->hw_params.bcast_sta_id;
180         else
181                 for (i = IWL_STA_ID; i < priv->hw_params.max_stations; i++) {
182                         if (!compare_ether_addr(priv->stations_39[i].sta.sta.addr,
183                                                 addr)) {
184                                 index = i;
185                                 break;
186                         }
187
188                         if (!priv->stations_39[i].used &&
189                             index == IWL_INVALID_STATION)
190                                 index = i;
191                 }
192
193         /* These two conditions has the same outcome but keep them separate
194           since they have different meaning */
195         if (unlikely(index == IWL_INVALID_STATION)) {
196                 spin_unlock_irqrestore(&priv->sta_lock, flags_spin);
197                 return index;
198         }
199
200         if (priv->stations_39[index].used &&
201            !compare_ether_addr(priv->stations_39[index].sta.sta.addr, addr)) {
202                 spin_unlock_irqrestore(&priv->sta_lock, flags_spin);
203                 return index;
204         }
205
206         IWL_DEBUG_ASSOC(priv, "Add STA ID %d: %pM\n", index, addr);
207         station = &priv->stations_39[index];
208         station->used = 1;
209         priv->num_stations++;
210
211         /* Set up the REPLY_ADD_STA command to send to device */
212         memset(&station->sta, 0, sizeof(struct iwl3945_addsta_cmd));
213         memcpy(station->sta.sta.addr, addr, ETH_ALEN);
214         station->sta.mode = 0;
215         station->sta.sta.sta_id = index;
216         station->sta.station_flags = 0;
217
218         if (priv->band == IEEE80211_BAND_5GHZ)
219                 rate = IWL_RATE_6M_PLCP;
220         else
221                 rate =  IWL_RATE_1M_PLCP;
222
223         /* Turn on both antennas for the station... */
224         station->sta.rate_n_flags =
225                         iwl3945_hw_set_rate_n_flags(rate, RATE_MCS_ANT_AB_MSK);
226
227         spin_unlock_irqrestore(&priv->sta_lock, flags_spin);
228
229         /* Add station to device's station table */
230         iwl_send_add_sta(priv,
231                          (struct iwl_addsta_cmd *)&station->sta, flags);
232         return index;
233
234 }
235
236 /**
237  * iwl3945_get_antenna_flags - Get antenna flags for RXON command
238  * @priv: eeprom and antenna fields are used to determine antenna flags
239  *
240  * priv->eeprom39  is used to determine if antenna AUX/MAIN are reversed
241  * iwl3945_mod_params.antenna specifies the antenna diversity mode:
242  *
243  * IWL_ANTENNA_DIVERSITY - NIC selects best antenna by itself
244  * IWL_ANTENNA_MAIN      - Force MAIN antenna
245  * IWL_ANTENNA_AUX       - Force AUX antenna
246  */
247 __le32 iwl3945_get_antenna_flags(const struct iwl_priv *priv)
248 {
249         struct iwl3945_eeprom *eeprom = (struct iwl3945_eeprom *)priv->eeprom;
250
251         switch (iwl3945_mod_params.antenna) {
252         case IWL_ANTENNA_DIVERSITY:
253                 return 0;
254
255         case IWL_ANTENNA_MAIN:
256                 if (eeprom->antenna_switch_type)
257                         return RXON_FLG_DIS_DIV_MSK | RXON_FLG_ANT_B_MSK;
258                 return RXON_FLG_DIS_DIV_MSK | RXON_FLG_ANT_A_MSK;
259
260         case IWL_ANTENNA_AUX:
261                 if (eeprom->antenna_switch_type)
262                         return RXON_FLG_DIS_DIV_MSK | RXON_FLG_ANT_A_MSK;
263                 return RXON_FLG_DIS_DIV_MSK | RXON_FLG_ANT_B_MSK;
264         }
265
266         /* bad antenna selector value */
267         IWL_ERR(priv, "Bad antenna selector value (0x%x)\n",
268                 iwl3945_mod_params.antenna);
269
270         return 0;               /* "diversity" is default if error */
271 }
272
273 static int iwl3945_set_ccmp_dynamic_key_info(struct iwl_priv *priv,
274                                    struct ieee80211_key_conf *keyconf,
275                                    u8 sta_id)
276 {
277         unsigned long flags;
278         __le16 key_flags = 0;
279         int ret;
280
281         key_flags |= (STA_KEY_FLG_CCMP | STA_KEY_FLG_MAP_KEY_MSK);
282         key_flags |= cpu_to_le16(keyconf->keyidx << STA_KEY_FLG_KEYID_POS);
283
284         if (sta_id == priv->hw_params.bcast_sta_id)
285                 key_flags |= STA_KEY_MULTICAST_MSK;
286
287         keyconf->flags |= IEEE80211_KEY_FLAG_GENERATE_IV;
288         keyconf->hw_key_idx = keyconf->keyidx;
289         key_flags &= ~STA_KEY_FLG_INVALID;
290
291         spin_lock_irqsave(&priv->sta_lock, flags);
292         priv->stations_39[sta_id].keyinfo.alg = keyconf->alg;
293         priv->stations_39[sta_id].keyinfo.keylen = keyconf->keylen;
294         memcpy(priv->stations_39[sta_id].keyinfo.key, keyconf->key,
295                keyconf->keylen);
296
297         memcpy(priv->stations_39[sta_id].sta.key.key, keyconf->key,
298                keyconf->keylen);
299
300         if ((priv->stations_39[sta_id].sta.key.key_flags & STA_KEY_FLG_ENCRYPT_MSK)
301                         == STA_KEY_FLG_NO_ENC)
302                 priv->stations_39[sta_id].sta.key.key_offset =
303                                  iwl_get_free_ucode_key_index(priv);
304         /* else, we are overriding an existing key => no need to allocated room
305         * in uCode. */
306
307         WARN(priv->stations_39[sta_id].sta.key.key_offset == WEP_INVALID_OFFSET,
308                 "no space for a new key");
309
310         priv->stations_39[sta_id].sta.key.key_flags = key_flags;
311         priv->stations_39[sta_id].sta.sta.modify_mask = STA_MODIFY_KEY_MASK;
312         priv->stations_39[sta_id].sta.mode = STA_CONTROL_MODIFY_MSK;
313
314         IWL_DEBUG_INFO(priv, "hwcrypto: modify ucode station key info\n");
315
316         ret = iwl_send_add_sta(priv,
317                 (struct iwl_addsta_cmd *)&priv->stations_39[sta_id].sta, CMD_ASYNC);
318
319         spin_unlock_irqrestore(&priv->sta_lock, flags);
320
321         return ret;
322 }
323
324 static int iwl3945_set_tkip_dynamic_key_info(struct iwl_priv *priv,
325                                   struct ieee80211_key_conf *keyconf,
326                                   u8 sta_id)
327 {
328         return -EOPNOTSUPP;
329 }
330
331 static int iwl3945_set_wep_dynamic_key_info(struct iwl_priv *priv,
332                                   struct ieee80211_key_conf *keyconf,
333                                   u8 sta_id)
334 {
335         return -EOPNOTSUPP;
336 }
337
338 static int iwl3945_clear_sta_key_info(struct iwl_priv *priv, u8 sta_id)
339 {
340         unsigned long flags;
341
342         spin_lock_irqsave(&priv->sta_lock, flags);
343         memset(&priv->stations_39[sta_id].keyinfo, 0, sizeof(struct iwl3945_hw_key));
344         memset(&priv->stations_39[sta_id].sta.key, 0,
345                 sizeof(struct iwl4965_keyinfo));
346         priv->stations_39[sta_id].sta.key.key_flags = STA_KEY_FLG_NO_ENC;
347         priv->stations_39[sta_id].sta.sta.modify_mask = STA_MODIFY_KEY_MASK;
348         priv->stations_39[sta_id].sta.mode = STA_CONTROL_MODIFY_MSK;
349         spin_unlock_irqrestore(&priv->sta_lock, flags);
350
351         IWL_DEBUG_INFO(priv, "hwcrypto: clear ucode station key info\n");
352         iwl_send_add_sta(priv,
353                 (struct iwl_addsta_cmd *)&priv->stations_39[sta_id].sta, 0);
354         return 0;
355 }
356
357 static int iwl3945_set_dynamic_key(struct iwl_priv *priv,
358                         struct ieee80211_key_conf *keyconf, u8 sta_id)
359 {
360         int ret = 0;
361
362         keyconf->hw_key_idx = HW_KEY_DYNAMIC;
363
364         switch (keyconf->alg) {
365         case ALG_CCMP:
366                 ret = iwl3945_set_ccmp_dynamic_key_info(priv, keyconf, sta_id);
367                 break;
368         case ALG_TKIP:
369                 ret = iwl3945_set_tkip_dynamic_key_info(priv, keyconf, sta_id);
370                 break;
371         case ALG_WEP:
372                 ret = iwl3945_set_wep_dynamic_key_info(priv, keyconf, sta_id);
373                 break;
374         default:
375                 IWL_ERR(priv, "Unknown alg: %s alg = %d\n", __func__, keyconf->alg);
376                 ret = -EINVAL;
377         }
378
379         IWL_DEBUG_WEP(priv, "Set dynamic key: alg= %d len=%d idx=%d sta=%d ret=%d\n",
380                       keyconf->alg, keyconf->keylen, keyconf->keyidx,
381                       sta_id, ret);
382
383         return ret;
384 }
385
386 static int iwl3945_remove_static_key(struct iwl_priv *priv)
387 {
388         int ret = -EOPNOTSUPP;
389
390         return ret;
391 }
392
393 static int iwl3945_set_static_key(struct iwl_priv *priv,
394                                 struct ieee80211_key_conf *key)
395 {
396         if (key->alg == ALG_WEP)
397                 return -EOPNOTSUPP;
398
399         IWL_ERR(priv, "Static key invalid: alg %d\n", key->alg);
400         return -EINVAL;
401 }
402
403 static void iwl3945_clear_free_frames(struct iwl_priv *priv)
404 {
405         struct list_head *element;
406
407         IWL_DEBUG_INFO(priv, "%d frames on pre-allocated heap on clear.\n",
408                        priv->frames_count);
409
410         while (!list_empty(&priv->free_frames)) {
411                 element = priv->free_frames.next;
412                 list_del(element);
413                 kfree(list_entry(element, struct iwl3945_frame, list));
414                 priv->frames_count--;
415         }
416
417         if (priv->frames_count) {
418                 IWL_WARN(priv, "%d frames still in use.  Did we lose one?\n",
419                             priv->frames_count);
420                 priv->frames_count = 0;
421         }
422 }
423
424 static struct iwl3945_frame *iwl3945_get_free_frame(struct iwl_priv *priv)
425 {
426         struct iwl3945_frame *frame;
427         struct list_head *element;
428         if (list_empty(&priv->free_frames)) {
429                 frame = kzalloc(sizeof(*frame), GFP_KERNEL);
430                 if (!frame) {
431                         IWL_ERR(priv, "Could not allocate frame!\n");
432                         return NULL;
433                 }
434
435                 priv->frames_count++;
436                 return frame;
437         }
438
439         element = priv->free_frames.next;
440         list_del(element);
441         return list_entry(element, struct iwl3945_frame, list);
442 }
443
444 static void iwl3945_free_frame(struct iwl_priv *priv, struct iwl3945_frame *frame)
445 {
446         memset(frame, 0, sizeof(*frame));
447         list_add(&frame->list, &priv->free_frames);
448 }
449
450 unsigned int iwl3945_fill_beacon_frame(struct iwl_priv *priv,
451                                 struct ieee80211_hdr *hdr,
452                                 int left)
453 {
454
455         if (!iwl_is_associated(priv) || !priv->ibss_beacon ||
456             ((priv->iw_mode != NL80211_IFTYPE_ADHOC) &&
457              (priv->iw_mode != NL80211_IFTYPE_AP)))
458                 return 0;
459
460         if (priv->ibss_beacon->len > left)
461                 return 0;
462
463         memcpy(hdr, priv->ibss_beacon->data, priv->ibss_beacon->len);
464
465         return priv->ibss_beacon->len;
466 }
467
468 static int iwl3945_send_beacon_cmd(struct iwl_priv *priv)
469 {
470         struct iwl3945_frame *frame;
471         unsigned int frame_size;
472         int rc;
473         u8 rate;
474
475         frame = iwl3945_get_free_frame(priv);
476
477         if (!frame) {
478                 IWL_ERR(priv, "Could not obtain free frame buffer for beacon "
479                           "command.\n");
480                 return -ENOMEM;
481         }
482
483         rate = iwl_rate_get_lowest_plcp(priv);
484
485         frame_size = iwl3945_hw_get_beacon_cmd(priv, frame, rate);
486
487         rc = iwl_send_cmd_pdu(priv, REPLY_TX_BEACON, frame_size,
488                               &frame->u.cmd[0]);
489
490         iwl3945_free_frame(priv, frame);
491
492         return rc;
493 }
494
495 static void iwl3945_unset_hw_params(struct iwl_priv *priv)
496 {
497         if (priv->shared_virt)
498                 pci_free_consistent(priv->pci_dev,
499                                     sizeof(struct iwl3945_shared),
500                                     priv->shared_virt,
501                                     priv->shared_phys);
502 }
503
504 #define MAX_UCODE_BEACON_INTERVAL       1024
505 #define INTEL_CONN_LISTEN_INTERVAL      cpu_to_le16(0xA)
506
507 static __le16 iwl3945_adjust_beacon_interval(u16 beacon_val)
508 {
509         u16 new_val = 0;
510         u16 beacon_factor = 0;
511
512         beacon_factor =
513             (beacon_val + MAX_UCODE_BEACON_INTERVAL)
514                 / MAX_UCODE_BEACON_INTERVAL;
515         new_val = beacon_val / beacon_factor;
516
517         return cpu_to_le16(new_val);
518 }
519
520 static void iwl3945_setup_rxon_timing(struct iwl_priv *priv)
521 {
522         u64 interval_tm_unit;
523         u64 tsf, result;
524         unsigned long flags;
525         struct ieee80211_conf *conf = NULL;
526         u16 beacon_int = 0;
527
528         conf = ieee80211_get_hw_conf(priv->hw);
529
530         spin_lock_irqsave(&priv->lock, flags);
531         priv->rxon_timing.timestamp = cpu_to_le64(priv->timestamp);
532         priv->rxon_timing.listen_interval = INTEL_CONN_LISTEN_INTERVAL;
533
534         tsf = priv->timestamp;
535
536         beacon_int = priv->beacon_int;
537         spin_unlock_irqrestore(&priv->lock, flags);
538
539         if (priv->iw_mode == NL80211_IFTYPE_STATION) {
540                 if (beacon_int == 0) {
541                         priv->rxon_timing.beacon_interval = cpu_to_le16(100);
542                         priv->rxon_timing.beacon_init_val = cpu_to_le32(102400);
543                 } else {
544                         priv->rxon_timing.beacon_interval =
545                                 cpu_to_le16(beacon_int);
546                         priv->rxon_timing.beacon_interval =
547                             iwl3945_adjust_beacon_interval(
548                                 le16_to_cpu(priv->rxon_timing.beacon_interval));
549                 }
550
551                 priv->rxon_timing.atim_window = 0;
552         } else {
553                 priv->rxon_timing.beacon_interval =
554                         iwl3945_adjust_beacon_interval(conf->beacon_int);
555                 /* TODO: we need to get atim_window from upper stack
556                  * for now we set to 0 */
557                 priv->rxon_timing.atim_window = 0;
558         }
559
560         interval_tm_unit =
561                 (le16_to_cpu(priv->rxon_timing.beacon_interval) * 1024);
562         result = do_div(tsf, interval_tm_unit);
563         priv->rxon_timing.beacon_init_val =
564             cpu_to_le32((u32) ((u64) interval_tm_unit - result));
565
566         IWL_DEBUG_ASSOC(priv,
567                 "beacon interval %d beacon timer %d beacon tim %d\n",
568                 le16_to_cpu(priv->rxon_timing.beacon_interval),
569                 le32_to_cpu(priv->rxon_timing.beacon_init_val),
570                 le16_to_cpu(priv->rxon_timing.atim_window));
571 }
572
573 static void iwl3945_build_tx_cmd_hwcrypto(struct iwl_priv *priv,
574                                       struct ieee80211_tx_info *info,
575                                       struct iwl_cmd *cmd,
576                                       struct sk_buff *skb_frag,
577                                       int sta_id)
578 {
579         struct iwl3945_tx_cmd *tx = (struct iwl3945_tx_cmd *)cmd->cmd.payload;
580         struct iwl3945_hw_key *keyinfo =
581             &priv->stations_39[sta_id].keyinfo;
582
583         switch (keyinfo->alg) {
584         case ALG_CCMP:
585                 tx->sec_ctl = TX_CMD_SEC_CCM;
586                 memcpy(tx->key, keyinfo->key, keyinfo->keylen);
587                 IWL_DEBUG_TX(priv, "tx_cmd with AES hwcrypto\n");
588                 break;
589
590         case ALG_TKIP:
591                 break;
592
593         case ALG_WEP:
594                 tx->sec_ctl = TX_CMD_SEC_WEP |
595                     (info->control.hw_key->hw_key_idx & TX_CMD_SEC_MSK) << TX_CMD_SEC_SHIFT;
596
597                 if (keyinfo->keylen == 13)
598                         tx->sec_ctl |= TX_CMD_SEC_KEY128;
599
600                 memcpy(&tx->key[3], keyinfo->key, keyinfo->keylen);
601
602                 IWL_DEBUG_TX(priv, "Configuring packet for WEP encryption "
603                              "with key %d\n", info->control.hw_key->hw_key_idx);
604                 break;
605
606         default:
607                 IWL_ERR(priv, "Unknown encode alg %d\n", keyinfo->alg);
608                 break;
609         }
610 }
611
612 /*
613  * handle build REPLY_TX command notification.
614  */
615 static void iwl3945_build_tx_cmd_basic(struct iwl_priv *priv,
616                                   struct iwl_cmd *cmd,
617                                   struct ieee80211_tx_info *info,
618                                   struct ieee80211_hdr *hdr, u8 std_id)
619 {
620         struct iwl3945_tx_cmd *tx = (struct iwl3945_tx_cmd *)cmd->cmd.payload;
621         __le32 tx_flags = tx->tx_flags;
622         __le16 fc = hdr->frame_control;
623         u8 rc_flags = info->control.rates[0].flags;
624
625         tx->stop_time.life_time = TX_CMD_LIFE_TIME_INFINITE;
626         if (!(info->flags & IEEE80211_TX_CTL_NO_ACK)) {
627                 tx_flags |= TX_CMD_FLG_ACK_MSK;
628                 if (ieee80211_is_mgmt(fc))
629                         tx_flags |= TX_CMD_FLG_SEQ_CTL_MSK;
630                 if (ieee80211_is_probe_resp(fc) &&
631                     !(le16_to_cpu(hdr->seq_ctrl) & 0xf))
632                         tx_flags |= TX_CMD_FLG_TSF_MSK;
633         } else {
634                 tx_flags &= (~TX_CMD_FLG_ACK_MSK);
635                 tx_flags |= TX_CMD_FLG_SEQ_CTL_MSK;
636         }
637
638         tx->sta_id = std_id;
639         if (ieee80211_has_morefrags(fc))
640                 tx_flags |= TX_CMD_FLG_MORE_FRAG_MSK;
641
642         if (ieee80211_is_data_qos(fc)) {
643                 u8 *qc = ieee80211_get_qos_ctl(hdr);
644                 tx->tid_tspec = qc[0] & 0xf;
645                 tx_flags &= ~TX_CMD_FLG_SEQ_CTL_MSK;
646         } else {
647                 tx_flags |= TX_CMD_FLG_SEQ_CTL_MSK;
648         }
649
650         if (rc_flags & IEEE80211_TX_RC_USE_RTS_CTS) {
651                 tx_flags |= TX_CMD_FLG_RTS_MSK;
652                 tx_flags &= ~TX_CMD_FLG_CTS_MSK;
653         } else if (rc_flags & IEEE80211_TX_RC_USE_CTS_PROTECT) {
654                 tx_flags &= ~TX_CMD_FLG_RTS_MSK;
655                 tx_flags |= TX_CMD_FLG_CTS_MSK;
656         }
657
658         if ((tx_flags & TX_CMD_FLG_RTS_MSK) || (tx_flags & TX_CMD_FLG_CTS_MSK))
659                 tx_flags |= TX_CMD_FLG_FULL_TXOP_PROT_MSK;
660
661         tx_flags &= ~(TX_CMD_FLG_ANT_SEL_MSK);
662         if (ieee80211_is_mgmt(fc)) {
663                 if (ieee80211_is_assoc_req(fc) || ieee80211_is_reassoc_req(fc))
664                         tx->timeout.pm_frame_timeout = cpu_to_le16(3);
665                 else
666                         tx->timeout.pm_frame_timeout = cpu_to_le16(2);
667         } else {
668                 tx->timeout.pm_frame_timeout = 0;
669 #ifdef CONFIG_IWLWIFI_LEDS
670                 priv->rxtxpackets += le16_to_cpu(cmd->cmd.tx.len);
671 #endif
672         }
673
674         tx->driver_txop = 0;
675         tx->tx_flags = tx_flags;
676         tx->next_frame_len = 0;
677 }
678
679 /*
680  * start REPLY_TX command process
681  */
682 static int iwl3945_tx_skb(struct iwl_priv *priv, struct sk_buff *skb)
683 {
684         struct ieee80211_hdr *hdr = (struct ieee80211_hdr *)skb->data;
685         struct ieee80211_tx_info *info = IEEE80211_SKB_CB(skb);
686         struct iwl3945_tx_cmd *tx;
687         struct iwl_tx_queue *txq = NULL;
688         struct iwl_queue *q = NULL;
689         struct iwl_cmd *out_cmd = NULL;
690         dma_addr_t phys_addr;
691         dma_addr_t txcmd_phys;
692         int txq_id = skb_get_queue_mapping(skb);
693         u16 len, idx, len_org, hdr_len;
694         u8 id;
695         u8 unicast;
696         u8 sta_id;
697         u8 tid = 0;
698         u16 seq_number = 0;
699         __le16 fc;
700         u8 wait_write_ptr = 0;
701         u8 *qc = NULL;
702         unsigned long flags;
703         int rc;
704
705         spin_lock_irqsave(&priv->lock, flags);
706         if (iwl_is_rfkill(priv)) {
707                 IWL_DEBUG_DROP(priv, "Dropping - RF KILL\n");
708                 goto drop_unlock;
709         }
710
711         if ((ieee80211_get_tx_rate(priv->hw, info)->hw_value & 0xFF) == IWL_INVALID_RATE) {
712                 IWL_ERR(priv, "ERROR: No TX rate available.\n");
713                 goto drop_unlock;
714         }
715
716         unicast = !is_multicast_ether_addr(hdr->addr1);
717         id = 0;
718
719         fc = hdr->frame_control;
720
721 #ifdef CONFIG_IWLWIFI_DEBUG
722         if (ieee80211_is_auth(fc))
723                 IWL_DEBUG_TX(priv, "Sending AUTH frame\n");
724         else if (ieee80211_is_assoc_req(fc))
725                 IWL_DEBUG_TX(priv, "Sending ASSOC frame\n");
726         else if (ieee80211_is_reassoc_req(fc))
727                 IWL_DEBUG_TX(priv, "Sending REASSOC frame\n");
728 #endif
729
730         /* drop all data frame if we are not associated */
731         if (ieee80211_is_data(fc) &&
732             (priv->iw_mode != NL80211_IFTYPE_MONITOR) && /* packet injection */
733             (!iwl_is_associated(priv) ||
734              ((priv->iw_mode == NL80211_IFTYPE_STATION) && !priv->assoc_id))) {
735                 IWL_DEBUG_DROP(priv, "Dropping - !iwl_is_associated\n");
736                 goto drop_unlock;
737         }
738
739         spin_unlock_irqrestore(&priv->lock, flags);
740
741         hdr_len = ieee80211_hdrlen(fc);
742
743         /* Find (or create) index into station table for destination station */
744         sta_id = iwl_get_sta_id(priv, hdr);
745         if (sta_id == IWL_INVALID_STATION) {
746                 IWL_DEBUG_DROP(priv, "Dropping - INVALID STATION: %pM\n",
747                                hdr->addr1);
748                 goto drop;
749         }
750
751         IWL_DEBUG_RATE(priv, "station Id %d\n", sta_id);
752
753         if (ieee80211_is_data_qos(fc)) {
754                 qc = ieee80211_get_qos_ctl(hdr);
755                 tid = qc[0] & IEEE80211_QOS_CTL_TID_MASK;
756                 seq_number = priv->stations_39[sta_id].tid[tid].seq_number &
757                                 IEEE80211_SCTL_SEQ;
758                 hdr->seq_ctrl = cpu_to_le16(seq_number) |
759                         (hdr->seq_ctrl &
760                                 cpu_to_le16(IEEE80211_SCTL_FRAG));
761                 seq_number += 0x10;
762         }
763
764         /* Descriptor for chosen Tx queue */
765         txq = &priv->txq[txq_id];
766         q = &txq->q;
767
768         spin_lock_irqsave(&priv->lock, flags);
769
770         idx = get_cmd_index(q, q->write_ptr, 0);
771
772         /* Set up driver data for this TFD */
773         memset(&(txq->txb[q->write_ptr]), 0, sizeof(struct iwl_tx_info));
774         txq->txb[q->write_ptr].skb[0] = skb;
775
776         /* Init first empty entry in queue's array of Tx/cmd buffers */
777         out_cmd = txq->cmd[idx];
778         tx = (struct iwl3945_tx_cmd *)out_cmd->cmd.payload;
779         memset(&out_cmd->hdr, 0, sizeof(out_cmd->hdr));
780         memset(tx, 0, sizeof(*tx));
781
782         /*
783          * Set up the Tx-command (not MAC!) header.
784          * Store the chosen Tx queue and TFD index within the sequence field;
785          * after Tx, uCode's Tx response will return this value so driver can
786          * locate the frame within the tx queue and do post-tx processing.
787          */
788         out_cmd->hdr.cmd = REPLY_TX;
789         out_cmd->hdr.sequence = cpu_to_le16((u16)(QUEUE_TO_SEQ(txq_id) |
790                                 INDEX_TO_SEQ(q->write_ptr)));
791
792         /* Copy MAC header from skb into command buffer */
793         memcpy(tx->hdr, hdr, hdr_len);
794
795         /*
796          * Use the first empty entry in this queue's command buffer array
797          * to contain the Tx command and MAC header concatenated together
798          * (payload data will be in another buffer).
799          * Size of this varies, due to varying MAC header length.
800          * If end is not dword aligned, we'll have 2 extra bytes at the end
801          * of the MAC header (device reads on dword boundaries).
802          * We'll tell device about this padding later.
803          */
804         len = sizeof(struct iwl3945_tx_cmd) +
805                         sizeof(struct iwl_cmd_header) + hdr_len;
806
807         len_org = len;
808         len = (len + 3) & ~3;
809
810         if (len_org != len)
811                 len_org = 1;
812         else
813                 len_org = 0;
814
815         /* Physical address of this Tx command's header (not MAC header!),
816          * within command buffer array. */
817         txcmd_phys = pci_map_single(priv->pci_dev,
818                                     out_cmd, sizeof(struct iwl_cmd),
819                                     PCI_DMA_TODEVICE);
820         pci_unmap_addr_set(&out_cmd->meta, mapping, txcmd_phys);
821         pci_unmap_len_set(&out_cmd->meta, len, sizeof(struct iwl_cmd));
822         /* Add buffer containing Tx command and MAC(!) header to TFD's
823          * first entry */
824         txcmd_phys += offsetof(struct iwl_cmd, hdr);
825
826         /* Add buffer containing Tx command and MAC(!) header to TFD's
827          * first entry */
828         priv->cfg->ops->lib->txq_attach_buf_to_tfd(priv, txq,
829                                                    txcmd_phys, len, 1, 0);
830
831         if (info->control.hw_key)
832                 iwl3945_build_tx_cmd_hwcrypto(priv, info, out_cmd, skb, sta_id);
833
834         /* Set up TFD's 2nd entry to point directly to remainder of skb,
835          * if any (802.11 null frames have no payload). */
836         len = skb->len - hdr_len;
837         if (len) {
838                 phys_addr = pci_map_single(priv->pci_dev, skb->data + hdr_len,
839                                            len, PCI_DMA_TODEVICE);
840                 priv->cfg->ops->lib->txq_attach_buf_to_tfd(priv, txq,
841                                                            phys_addr, len,
842                                                            0, U32_PAD(len));
843         }
844
845         /* Total # bytes to be transmitted */
846         len = (u16)skb->len;
847         tx->len = cpu_to_le16(len);
848
849         /* TODO need this for burst mode later on */
850         iwl3945_build_tx_cmd_basic(priv, out_cmd, info, hdr, sta_id);
851
852         /* set is_hcca to 0; it probably will never be implemented */
853         iwl3945_hw_build_tx_cmd_rate(priv, out_cmd, info, hdr, sta_id, 0);
854
855         tx->tx_flags &= ~TX_CMD_FLG_ANT_A_MSK;
856         tx->tx_flags &= ~TX_CMD_FLG_ANT_B_MSK;
857
858         if (!ieee80211_has_morefrags(hdr->frame_control)) {
859                 txq->need_update = 1;
860                 if (qc)
861                         priv->stations_39[sta_id].tid[tid].seq_number = seq_number;
862         } else {
863                 wait_write_ptr = 1;
864                 txq->need_update = 0;
865         }
866
867         iwl_print_hex_dump(priv, IWL_DL_TX, tx, sizeof(*tx));
868
869         iwl_print_hex_dump(priv, IWL_DL_TX, (u8 *)tx->hdr,
870                            ieee80211_hdrlen(fc));
871
872         /* Tell device the write index *just past* this latest filled TFD */
873         q->write_ptr = iwl_queue_inc_wrap(q->write_ptr, q->n_bd);
874         rc = iwl_txq_update_write_ptr(priv, txq);
875         spin_unlock_irqrestore(&priv->lock, flags);
876
877         if (rc)
878                 return rc;
879
880         if ((iwl_queue_space(q) < q->high_mark)
881             && priv->mac80211_registered) {
882                 if (wait_write_ptr) {
883                         spin_lock_irqsave(&priv->lock, flags);
884                         txq->need_update = 1;
885                         iwl_txq_update_write_ptr(priv, txq);
886                         spin_unlock_irqrestore(&priv->lock, flags);
887                 }
888
889                 iwl_stop_queue(priv, skb_get_queue_mapping(skb));
890         }
891
892         return 0;
893
894 drop_unlock:
895         spin_unlock_irqrestore(&priv->lock, flags);
896 drop:
897         return -1;
898 }
899
900 #ifdef CONFIG_IWL3945_SPECTRUM_MEASUREMENT
901
902 #include "iwl-spectrum.h"
903
904 #define BEACON_TIME_MASK_LOW    0x00FFFFFF
905 #define BEACON_TIME_MASK_HIGH   0xFF000000
906 #define TIME_UNIT               1024
907
908 /*
909  * extended beacon time format
910  * time in usec will be changed into a 32-bit value in 8:24 format
911  * the high 1 byte is the beacon counts
912  * the lower 3 bytes is the time in usec within one beacon interval
913  */
914
915 static u32 iwl3945_usecs_to_beacons(u32 usec, u32 beacon_interval)
916 {
917         u32 quot;
918         u32 rem;
919         u32 interval = beacon_interval * 1024;
920
921         if (!interval || !usec)
922                 return 0;
923
924         quot = (usec / interval) & (BEACON_TIME_MASK_HIGH >> 24);
925         rem = (usec % interval) & BEACON_TIME_MASK_LOW;
926
927         return (quot << 24) + rem;
928 }
929
930 /* base is usually what we get from ucode with each received frame,
931  * the same as HW timer counter counting down
932  */
933
934 static __le32 iwl3945_add_beacon_time(u32 base, u32 addon, u32 beacon_interval)
935 {
936         u32 base_low = base & BEACON_TIME_MASK_LOW;
937         u32 addon_low = addon & BEACON_TIME_MASK_LOW;
938         u32 interval = beacon_interval * TIME_UNIT;
939         u32 res = (base & BEACON_TIME_MASK_HIGH) +
940             (addon & BEACON_TIME_MASK_HIGH);
941
942         if (base_low > addon_low)
943                 res += base_low - addon_low;
944         else if (base_low < addon_low) {
945                 res += interval + base_low - addon_low;
946                 res += (1 << 24);
947         } else
948                 res += (1 << 24);
949
950         return cpu_to_le32(res);
951 }
952
953 static int iwl3945_get_measurement(struct iwl_priv *priv,
954                                struct ieee80211_measurement_params *params,
955                                u8 type)
956 {
957         struct iwl_spectrum_cmd spectrum;
958         struct iwl_rx_packet *res;
959         struct iwl_host_cmd cmd = {
960                 .id = REPLY_SPECTRUM_MEASUREMENT_CMD,
961                 .data = (void *)&spectrum,
962                 .meta.flags = CMD_WANT_SKB,
963         };
964         u32 add_time = le64_to_cpu(params->start_time);
965         int rc;
966         int spectrum_resp_status;
967         int duration = le16_to_cpu(params->duration);
968
969         if (iwl_is_associated(priv))
970                 add_time =
971                     iwl3945_usecs_to_beacons(
972                         le64_to_cpu(params->start_time) - priv->last_tsf,
973                         le16_to_cpu(priv->rxon_timing.beacon_interval));
974
975         memset(&spectrum, 0, sizeof(spectrum));
976
977         spectrum.channel_count = cpu_to_le16(1);
978         spectrum.flags =
979             RXON_FLG_TSF2HOST_MSK | RXON_FLG_ANT_A_MSK | RXON_FLG_DIS_DIV_MSK;
980         spectrum.filter_flags = MEASUREMENT_FILTER_FLAG;
981         cmd.len = sizeof(spectrum);
982         spectrum.len = cpu_to_le16(cmd.len - sizeof(spectrum.len));
983
984         if (iwl_is_associated(priv))
985                 spectrum.start_time =
986                     iwl3945_add_beacon_time(priv->last_beacon_time,
987                                 add_time,
988                                 le16_to_cpu(priv->rxon_timing.beacon_interval));
989         else
990                 spectrum.start_time = 0;
991
992         spectrum.channels[0].duration = cpu_to_le32(duration * TIME_UNIT);
993         spectrum.channels[0].channel = params->channel;
994         spectrum.channels[0].type = type;
995         if (priv->active_rxon.flags & RXON_FLG_BAND_24G_MSK)
996                 spectrum.flags |= RXON_FLG_BAND_24G_MSK |
997                     RXON_FLG_AUTO_DETECT_MSK | RXON_FLG_TGG_PROTECT_MSK;
998
999         rc = iwl_send_cmd_sync(priv, &cmd);
1000         if (rc)
1001                 return rc;
1002
1003         res = (struct iwl_rx_packet *)cmd.meta.u.skb->data;
1004         if (res->hdr.flags & IWL_CMD_FAILED_MSK) {
1005                 IWL_ERR(priv, "Bad return from REPLY_RX_ON_ASSOC command\n");
1006                 rc = -EIO;
1007         }
1008
1009         spectrum_resp_status = le16_to_cpu(res->u.spectrum.status);
1010         switch (spectrum_resp_status) {
1011         case 0:         /* Command will be handled */
1012                 if (res->u.spectrum.id != 0xff) {
1013                         IWL_DEBUG_INFO(priv, "Replaced existing measurement: %d\n",
1014                                                 res->u.spectrum.id);
1015                         priv->measurement_status &= ~MEASUREMENT_READY;
1016                 }
1017                 priv->measurement_status |= MEASUREMENT_ACTIVE;
1018                 rc = 0;
1019                 break;
1020
1021         case 1:         /* Command will not be handled */
1022                 rc = -EAGAIN;
1023                 break;
1024         }
1025
1026         dev_kfree_skb_any(cmd.meta.u.skb);
1027
1028         return rc;
1029 }
1030 #endif
1031
1032 static void iwl3945_rx_reply_alive(struct iwl_priv *priv,
1033                                struct iwl_rx_mem_buffer *rxb)
1034 {
1035         struct iwl_rx_packet *pkt = (void *)rxb->skb->data;
1036         struct iwl_alive_resp *palive;
1037         struct delayed_work *pwork;
1038
1039         palive = &pkt->u.alive_frame;
1040
1041         IWL_DEBUG_INFO(priv, "Alive ucode status 0x%08X revision "
1042                        "0x%01X 0x%01X\n",
1043                        palive->is_valid, palive->ver_type,
1044                        palive->ver_subtype);
1045
1046         if (palive->ver_subtype == INITIALIZE_SUBTYPE) {
1047                 IWL_DEBUG_INFO(priv, "Initialization Alive received.\n");
1048                 memcpy(&priv->card_alive_init, &pkt->u.alive_frame,
1049                        sizeof(struct iwl_alive_resp));
1050                 pwork = &priv->init_alive_start;
1051         } else {
1052                 IWL_DEBUG_INFO(priv, "Runtime Alive received.\n");
1053                 memcpy(&priv->card_alive, &pkt->u.alive_frame,
1054                        sizeof(struct iwl_alive_resp));
1055                 pwork = &priv->alive_start;
1056                 iwl3945_disable_events(priv);
1057         }
1058
1059         /* We delay the ALIVE response by 5ms to
1060          * give the HW RF Kill time to activate... */
1061         if (palive->is_valid == UCODE_VALID_OK)
1062                 queue_delayed_work(priv->workqueue, pwork,
1063                                    msecs_to_jiffies(5));
1064         else
1065                 IWL_WARN(priv, "uCode did not respond OK.\n");
1066 }
1067
1068 static void iwl3945_rx_reply_add_sta(struct iwl_priv *priv,
1069                                  struct iwl_rx_mem_buffer *rxb)
1070 {
1071 #ifdef CONFIG_IWLWIFI_DEBUG
1072         struct iwl_rx_packet *pkt = (void *)rxb->skb->data;
1073 #endif
1074
1075         IWL_DEBUG_RX(priv, "Received REPLY_ADD_STA: 0x%02X\n", pkt->u.status);
1076         return;
1077 }
1078
1079 static void iwl3945_bg_beacon_update(struct work_struct *work)
1080 {
1081         struct iwl_priv *priv =
1082                 container_of(work, struct iwl_priv, beacon_update);
1083         struct sk_buff *beacon;
1084
1085         /* Pull updated AP beacon from mac80211. will fail if not in AP mode */
1086         beacon = ieee80211_beacon_get(priv->hw, priv->vif);
1087
1088         if (!beacon) {
1089                 IWL_ERR(priv, "update beacon failed\n");
1090                 return;
1091         }
1092
1093         mutex_lock(&priv->mutex);
1094         /* new beacon skb is allocated every time; dispose previous.*/
1095         if (priv->ibss_beacon)
1096                 dev_kfree_skb(priv->ibss_beacon);
1097
1098         priv->ibss_beacon = beacon;
1099         mutex_unlock(&priv->mutex);
1100
1101         iwl3945_send_beacon_cmd(priv);
1102 }
1103
1104 static void iwl3945_rx_beacon_notif(struct iwl_priv *priv,
1105                                 struct iwl_rx_mem_buffer *rxb)
1106 {
1107 #ifdef CONFIG_IWLWIFI_DEBUG
1108         struct iwl_rx_packet *pkt = (void *)rxb->skb->data;
1109         struct iwl3945_beacon_notif *beacon = &(pkt->u.beacon_status);
1110         u8 rate = beacon->beacon_notify_hdr.rate;
1111
1112         IWL_DEBUG_RX(priv, "beacon status %x retries %d iss %d "
1113                 "tsf %d %d rate %d\n",
1114                 le32_to_cpu(beacon->beacon_notify_hdr.status) & TX_STATUS_MSK,
1115                 beacon->beacon_notify_hdr.failure_frame,
1116                 le32_to_cpu(beacon->ibss_mgr_status),
1117                 le32_to_cpu(beacon->high_tsf),
1118                 le32_to_cpu(beacon->low_tsf), rate);
1119 #endif
1120
1121         if ((priv->iw_mode == NL80211_IFTYPE_AP) &&
1122             (!test_bit(STATUS_EXIT_PENDING, &priv->status)))
1123                 queue_work(priv->workqueue, &priv->beacon_update);
1124 }
1125
1126 /* Handle notification from uCode that card's power state is changing
1127  * due to software, hardware, or critical temperature RFKILL */
1128 static void iwl3945_rx_card_state_notif(struct iwl_priv *priv,
1129                                     struct iwl_rx_mem_buffer *rxb)
1130 {
1131         struct iwl_rx_packet *pkt = (void *)rxb->skb->data;
1132         u32 flags = le32_to_cpu(pkt->u.card_state_notif.flags);
1133         unsigned long status = priv->status;
1134
1135         IWL_DEBUG_RF_KILL(priv, "Card state received: HW:%s SW:%s\n",
1136                           (flags & HW_CARD_DISABLED) ? "Kill" : "On",
1137                           (flags & SW_CARD_DISABLED) ? "Kill" : "On");
1138
1139         iwl_write32(priv, CSR_UCODE_DRV_GP1_SET,
1140                     CSR_UCODE_DRV_GP1_BIT_CMD_BLOCKED);
1141
1142         if (flags & HW_CARD_DISABLED)
1143                 set_bit(STATUS_RF_KILL_HW, &priv->status);
1144         else
1145                 clear_bit(STATUS_RF_KILL_HW, &priv->status);
1146
1147
1148         if (flags & SW_CARD_DISABLED)
1149                 set_bit(STATUS_RF_KILL_SW, &priv->status);
1150         else
1151                 clear_bit(STATUS_RF_KILL_SW, &priv->status);
1152
1153         iwl_scan_cancel(priv);
1154
1155         if ((test_bit(STATUS_RF_KILL_HW, &status) !=
1156              test_bit(STATUS_RF_KILL_HW, &priv->status)) ||
1157             (test_bit(STATUS_RF_KILL_SW, &status) !=
1158              test_bit(STATUS_RF_KILL_SW, &priv->status)))
1159                 queue_work(priv->workqueue, &priv->rf_kill);
1160         else
1161                 wake_up_interruptible(&priv->wait_command_queue);
1162 }
1163
1164 /**
1165  * iwl3945_setup_rx_handlers - Initialize Rx handler callbacks
1166  *
1167  * Setup the RX handlers for each of the reply types sent from the uCode
1168  * to the host.
1169  *
1170  * This function chains into the hardware specific files for them to setup
1171  * any hardware specific handlers as well.
1172  */
1173 static void iwl3945_setup_rx_handlers(struct iwl_priv *priv)
1174 {
1175         priv->rx_handlers[REPLY_ALIVE] = iwl3945_rx_reply_alive;
1176         priv->rx_handlers[REPLY_ADD_STA] = iwl3945_rx_reply_add_sta;
1177         priv->rx_handlers[REPLY_ERROR] = iwl_rx_reply_error;
1178         priv->rx_handlers[CHANNEL_SWITCH_NOTIFICATION] = iwl_rx_csa;
1179         priv->rx_handlers[PM_SLEEP_NOTIFICATION] = iwl_rx_pm_sleep_notif;
1180         priv->rx_handlers[PM_DEBUG_STATISTIC_NOTIFIC] =
1181             iwl_rx_pm_debug_statistics_notif;
1182         priv->rx_handlers[BEACON_NOTIFICATION] = iwl3945_rx_beacon_notif;
1183
1184         /*
1185          * The same handler is used for both the REPLY to a discrete
1186          * statistics request from the host as well as for the periodic
1187          * statistics notifications (after received beacons) from the uCode.
1188          */
1189         priv->rx_handlers[REPLY_STATISTICS_CMD] = iwl3945_hw_rx_statistics;
1190         priv->rx_handlers[STATISTICS_NOTIFICATION] = iwl3945_hw_rx_statistics;
1191
1192         iwl_setup_spectrum_handlers(priv);
1193         iwl_setup_rx_scan_handlers(priv);
1194         priv->rx_handlers[CARD_STATE_NOTIFICATION] = iwl3945_rx_card_state_notif;
1195
1196         /* Set up hardware specific Rx handlers */
1197         iwl3945_hw_rx_handler_setup(priv);
1198 }
1199
1200 /************************** RX-FUNCTIONS ****************************/
1201 /*
1202  * Rx theory of operation
1203  *
1204  * The host allocates 32 DMA target addresses and passes the host address
1205  * to the firmware at register IWL_RFDS_TABLE_LOWER + N * RFD_SIZE where N is
1206  * 0 to 31
1207  *
1208  * Rx Queue Indexes
1209  * The host/firmware share two index registers for managing the Rx buffers.
1210  *
1211  * The READ index maps to the first position that the firmware may be writing
1212  * to -- the driver can read up to (but not including) this position and get
1213  * good data.
1214  * The READ index is managed by the firmware once the card is enabled.
1215  *
1216  * The WRITE index maps to the last position the driver has read from -- the
1217  * position preceding WRITE is the last slot the firmware can place a packet.
1218  *
1219  * The queue is empty (no good data) if WRITE = READ - 1, and is full if
1220  * WRITE = READ.
1221  *
1222  * During initialization, the host sets up the READ queue position to the first
1223  * INDEX position, and WRITE to the last (READ - 1 wrapped)
1224  *
1225  * When the firmware places a packet in a buffer, it will advance the READ index
1226  * and fire the RX interrupt.  The driver can then query the READ index and
1227  * process as many packets as possible, moving the WRITE index forward as it
1228  * resets the Rx queue buffers with new memory.
1229  *
1230  * The management in the driver is as follows:
1231  * + A list of pre-allocated SKBs is stored in iwl->rxq->rx_free.  When
1232  *   iwl->rxq->free_count drops to or below RX_LOW_WATERMARK, work is scheduled
1233  *   to replenish the iwl->rxq->rx_free.
1234  * + In iwl3945_rx_replenish (scheduled) if 'processed' != 'read' then the
1235  *   iwl->rxq is replenished and the READ INDEX is updated (updating the
1236  *   'processed' and 'read' driver indexes as well)
1237  * + A received packet is processed and handed to the kernel network stack,
1238  *   detached from the iwl->rxq.  The driver 'processed' index is updated.
1239  * + The Host/Firmware iwl->rxq is replenished at tasklet time from the rx_free
1240  *   list. If there are no allocated buffers in iwl->rxq->rx_free, the READ
1241  *   INDEX is not incremented and iwl->status(RX_STALLED) is set.  If there
1242  *   were enough free buffers and RX_STALLED is set it is cleared.
1243  *
1244  *
1245  * Driver sequence:
1246  *
1247  * iwl3945_rx_replenish()     Replenishes rx_free list from rx_used, and calls
1248  *                            iwl3945_rx_queue_restock
1249  * iwl3945_rx_queue_restock() Moves available buffers from rx_free into Rx
1250  *                            queue, updates firmware pointers, and updates
1251  *                            the WRITE index.  If insufficient rx_free buffers
1252  *                            are available, schedules iwl3945_rx_replenish
1253  *
1254  * -- enable interrupts --
1255  * ISR - iwl3945_rx()         Detach iwl_rx_mem_buffers from pool up to the
1256  *                            READ INDEX, detaching the SKB from the pool.
1257  *                            Moves the packet buffer from queue to rx_used.
1258  *                            Calls iwl3945_rx_queue_restock to refill any empty
1259  *                            slots.
1260  * ...
1261  *
1262  */
1263
1264 /**
1265  * iwl3945_dma_addr2rbd_ptr - convert a DMA address to a uCode read buffer ptr
1266  */
1267 static inline __le32 iwl3945_dma_addr2rbd_ptr(struct iwl_priv *priv,
1268                                           dma_addr_t dma_addr)
1269 {
1270         return cpu_to_le32((u32)dma_addr);
1271 }
1272
1273 /**
1274  * iwl3945_rx_queue_restock - refill RX queue from pre-allocated pool
1275  *
1276  * If there are slots in the RX queue that need to be restocked,
1277  * and we have free pre-allocated buffers, fill the ranks as much
1278  * as we can, pulling from rx_free.
1279  *
1280  * This moves the 'write' index forward to catch up with 'processed', and
1281  * also updates the memory address in the firmware to reference the new
1282  * target buffer.
1283  */
1284 static int iwl3945_rx_queue_restock(struct iwl_priv *priv)
1285 {
1286         struct iwl_rx_queue *rxq = &priv->rxq;
1287         struct list_head *element;
1288         struct iwl_rx_mem_buffer *rxb;
1289         unsigned long flags;
1290         int write, rc;
1291
1292         spin_lock_irqsave(&rxq->lock, flags);
1293         write = rxq->write & ~0x7;
1294         while ((iwl_rx_queue_space(rxq) > 0) && (rxq->free_count)) {
1295                 /* Get next free Rx buffer, remove from free list */
1296                 element = rxq->rx_free.next;
1297                 rxb = list_entry(element, struct iwl_rx_mem_buffer, list);
1298                 list_del(element);
1299
1300                 /* Point to Rx buffer via next RBD in circular buffer */
1301                 rxq->bd[rxq->write] = iwl3945_dma_addr2rbd_ptr(priv, rxb->real_dma_addr);
1302                 rxq->queue[rxq->write] = rxb;
1303                 rxq->write = (rxq->write + 1) & RX_QUEUE_MASK;
1304                 rxq->free_count--;
1305         }
1306         spin_unlock_irqrestore(&rxq->lock, flags);
1307         /* If the pre-allocated buffer pool is dropping low, schedule to
1308          * refill it */
1309         if (rxq->free_count <= RX_LOW_WATERMARK)
1310                 queue_work(priv->workqueue, &priv->rx_replenish);
1311
1312
1313         /* If we've added more space for the firmware to place data, tell it.
1314          * Increment device's write pointer in multiples of 8. */
1315         if ((write != (rxq->write & ~0x7))
1316             || (abs(rxq->write - rxq->read) > 7)) {
1317                 spin_lock_irqsave(&rxq->lock, flags);
1318                 rxq->need_update = 1;
1319                 spin_unlock_irqrestore(&rxq->lock, flags);
1320                 rc = iwl_rx_queue_update_write_ptr(priv, rxq);
1321                 if (rc)
1322                         return rc;
1323         }
1324
1325         return 0;
1326 }
1327
1328 /**
1329  * iwl3945_rx_replenish - Move all used packet from rx_used to rx_free
1330  *
1331  * When moving to rx_free an SKB is allocated for the slot.
1332  *
1333  * Also restock the Rx queue via iwl3945_rx_queue_restock.
1334  * This is called as a scheduled work item (except for during initialization)
1335  */
1336 static void iwl3945_rx_allocate(struct iwl_priv *priv)
1337 {
1338         struct iwl_rx_queue *rxq = &priv->rxq;
1339         struct list_head *element;
1340         struct iwl_rx_mem_buffer *rxb;
1341         unsigned long flags;
1342         spin_lock_irqsave(&rxq->lock, flags);
1343         while (!list_empty(&rxq->rx_used)) {
1344                 element = rxq->rx_used.next;
1345                 rxb = list_entry(element, struct iwl_rx_mem_buffer, list);
1346
1347                 /* Alloc a new receive buffer */
1348                 rxb->skb =
1349                     alloc_skb(priv->hw_params.rx_buf_size,
1350                                 __GFP_NOWARN | GFP_ATOMIC);
1351                 if (!rxb->skb) {
1352                         if (net_ratelimit())
1353                                 IWL_CRIT(priv, ": Can not allocate SKB buffers\n");
1354                         /* We don't reschedule replenish work here -- we will
1355                          * call the restock method and if it still needs
1356                          * more buffers it will schedule replenish */
1357                         break;
1358                 }
1359
1360                 /* If radiotap head is required, reserve some headroom here.
1361                  * The physical head count is a variable rx_stats->phy_count.
1362                  * We reserve 4 bytes here. Plus these extra bytes, the
1363                  * headroom of the physical head should be enough for the
1364                  * radiotap head that iwl3945 supported. See iwl3945_rt.
1365                  */
1366                 skb_reserve(rxb->skb, 4);
1367
1368                 priv->alloc_rxb_skb++;
1369                 list_del(element);
1370
1371                 /* Get physical address of RB/SKB */
1372                 rxb->real_dma_addr = pci_map_single(priv->pci_dev,
1373                                                 rxb->skb->data,
1374                                                 priv->hw_params.rx_buf_size,
1375                                                 PCI_DMA_FROMDEVICE);
1376                 list_add_tail(&rxb->list, &rxq->rx_free);
1377                 rxq->free_count++;
1378         }
1379         spin_unlock_irqrestore(&rxq->lock, flags);
1380 }
1381
1382 /*
1383  * this should be called while priv->lock is locked
1384  */
1385 static void __iwl3945_rx_replenish(void *data)
1386 {
1387         struct iwl_priv *priv = data;
1388
1389         iwl3945_rx_allocate(priv);
1390         iwl3945_rx_queue_restock(priv);
1391 }
1392
1393
1394 void iwl3945_rx_replenish(void *data)
1395 {
1396         struct iwl_priv *priv = data;
1397         unsigned long flags;
1398
1399         iwl3945_rx_allocate(priv);
1400
1401         spin_lock_irqsave(&priv->lock, flags);
1402         iwl3945_rx_queue_restock(priv);
1403         spin_unlock_irqrestore(&priv->lock, flags);
1404 }
1405
1406 /* Convert linear signal-to-noise ratio into dB */
1407 static u8 ratio2dB[100] = {
1408 /*       0   1   2   3   4   5   6   7   8   9 */
1409          0,  0,  6, 10, 12, 14, 16, 17, 18, 19, /* 00 - 09 */
1410         20, 21, 22, 22, 23, 23, 24, 25, 26, 26, /* 10 - 19 */
1411         26, 26, 26, 27, 27, 28, 28, 28, 29, 29, /* 20 - 29 */
1412         29, 30, 30, 30, 31, 31, 31, 31, 32, 32, /* 30 - 39 */
1413         32, 32, 32, 33, 33, 33, 33, 33, 34, 34, /* 40 - 49 */
1414         34, 34, 34, 34, 35, 35, 35, 35, 35, 35, /* 50 - 59 */
1415         36, 36, 36, 36, 36, 36, 36, 37, 37, 37, /* 60 - 69 */
1416         37, 37, 37, 37, 37, 38, 38, 38, 38, 38, /* 70 - 79 */
1417         38, 38, 38, 38, 38, 39, 39, 39, 39, 39, /* 80 - 89 */
1418         39, 39, 39, 39, 39, 40, 40, 40, 40, 40  /* 90 - 99 */
1419 };
1420
1421 /* Calculates a relative dB value from a ratio of linear
1422  *   (i.e. not dB) signal levels.
1423  * Conversion assumes that levels are voltages (20*log), not powers (10*log). */
1424 int iwl3945_calc_db_from_ratio(int sig_ratio)
1425 {
1426         /* 1000:1 or higher just report as 60 dB */
1427         if (sig_ratio >= 1000)
1428                 return 60;
1429
1430         /* 100:1 or higher, divide by 10 and use table,
1431          *   add 20 dB to make up for divide by 10 */
1432         if (sig_ratio >= 100)
1433                 return 20 + (int)ratio2dB[sig_ratio/10];
1434
1435         /* We shouldn't see this */
1436         if (sig_ratio < 1)
1437                 return 0;
1438
1439         /* Use table for ratios 1:1 - 99:1 */
1440         return (int)ratio2dB[sig_ratio];
1441 }
1442
1443 #define PERFECT_RSSI (-20) /* dBm */
1444 #define WORST_RSSI (-95)   /* dBm */
1445 #define RSSI_RANGE (PERFECT_RSSI - WORST_RSSI)
1446
1447 /* Calculate an indication of rx signal quality (a percentage, not dBm!).
1448  * See http://www.ces.clemson.edu/linux/signal_quality.shtml for info
1449  *   about formulas used below. */
1450 int iwl3945_calc_sig_qual(int rssi_dbm, int noise_dbm)
1451 {
1452         int sig_qual;
1453         int degradation = PERFECT_RSSI - rssi_dbm;
1454
1455         /* If we get a noise measurement, use signal-to-noise ratio (SNR)
1456          * as indicator; formula is (signal dbm - noise dbm).
1457          * SNR at or above 40 is a great signal (100%).
1458          * Below that, scale to fit SNR of 0 - 40 dB within 0 - 100% indicator.
1459          * Weakest usable signal is usually 10 - 15 dB SNR. */
1460         if (noise_dbm) {
1461                 if (rssi_dbm - noise_dbm >= 40)
1462                         return 100;
1463                 else if (rssi_dbm < noise_dbm)
1464                         return 0;
1465                 sig_qual = ((rssi_dbm - noise_dbm) * 5) / 2;
1466
1467         /* Else use just the signal level.
1468          * This formula is a least squares fit of data points collected and
1469          *   compared with a reference system that had a percentage (%) display
1470          *   for signal quality. */
1471         } else
1472                 sig_qual = (100 * (RSSI_RANGE * RSSI_RANGE) - degradation *
1473                             (15 * RSSI_RANGE + 62 * degradation)) /
1474                            (RSSI_RANGE * RSSI_RANGE);
1475
1476         if (sig_qual > 100)
1477                 sig_qual = 100;
1478         else if (sig_qual < 1)
1479                 sig_qual = 0;
1480
1481         return sig_qual;
1482 }
1483
1484 /**
1485  * iwl3945_rx_handle - Main entry function for receiving responses from uCode
1486  *
1487  * Uses the priv->rx_handlers callback function array to invoke
1488  * the appropriate handlers, including command responses,
1489  * frame-received notifications, and other notifications.
1490  */
1491 static void iwl3945_rx_handle(struct iwl_priv *priv)
1492 {
1493         struct iwl_rx_mem_buffer *rxb;
1494         struct iwl_rx_packet *pkt;
1495         struct iwl_rx_queue *rxq = &priv->rxq;
1496         u32 r, i;
1497         int reclaim;
1498         unsigned long flags;
1499         u8 fill_rx = 0;
1500         u32 count = 8;
1501
1502         /* uCode's read index (stored in shared DRAM) indicates the last Rx
1503          * buffer that the driver may process (last buffer filled by ucode). */
1504         r = le16_to_cpu(rxq->rb_stts->closed_rb_num) &  0x0FFF;
1505         i = rxq->read;
1506
1507         if (iwl_rx_queue_space(rxq) > (RX_QUEUE_SIZE / 2))
1508                 fill_rx = 1;
1509         /* Rx interrupt, but nothing sent from uCode */
1510         if (i == r)
1511                 IWL_DEBUG(priv, IWL_DL_RX | IWL_DL_ISR, "r = %d, i = %d\n", r, i);
1512
1513         while (i != r) {
1514                 rxb = rxq->queue[i];
1515
1516                 /* If an RXB doesn't have a Rx queue slot associated with it,
1517                  * then a bug has been introduced in the queue refilling
1518                  * routines -- catch it here */
1519                 BUG_ON(rxb == NULL);
1520
1521                 rxq->queue[i] = NULL;
1522
1523                 pci_dma_sync_single_for_cpu(priv->pci_dev, rxb->real_dma_addr,
1524                                             priv->hw_params.rx_buf_size,
1525                                             PCI_DMA_FROMDEVICE);
1526                 pkt = (struct iwl_rx_packet *)rxb->skb->data;
1527
1528                 /* Reclaim a command buffer only if this packet is a response
1529                  *   to a (driver-originated) command.
1530                  * If the packet (e.g. Rx frame) originated from uCode,
1531                  *   there is no command buffer to reclaim.
1532                  * Ucode should set SEQ_RX_FRAME bit if ucode-originated,
1533                  *   but apparently a few don't get set; catch them here. */
1534                 reclaim = !(pkt->hdr.sequence & SEQ_RX_FRAME) &&
1535                         (pkt->hdr.cmd != STATISTICS_NOTIFICATION) &&
1536                         (pkt->hdr.cmd != REPLY_TX);
1537
1538                 /* Based on type of command response or notification,
1539                  *   handle those that need handling via function in
1540                  *   rx_handlers table.  See iwl3945_setup_rx_handlers() */
1541                 if (priv->rx_handlers[pkt->hdr.cmd]) {
1542                         IWL_DEBUG(priv, IWL_DL_HCMD | IWL_DL_RX | IWL_DL_ISR,
1543                                 "r = %d, i = %d, %s, 0x%02x\n", r, i,
1544                                 get_cmd_string(pkt->hdr.cmd), pkt->hdr.cmd);
1545                         priv->rx_handlers[pkt->hdr.cmd] (priv, rxb);
1546                         priv->isr_stats.rx_handlers[pkt->hdr.cmd]++;
1547                 } else {
1548                         /* No handling needed */
1549                         IWL_DEBUG(priv, IWL_DL_HCMD | IWL_DL_RX | IWL_DL_ISR,
1550                                 "r %d i %d No handler needed for %s, 0x%02x\n",
1551                                 r, i, get_cmd_string(pkt->hdr.cmd),
1552                                 pkt->hdr.cmd);
1553                 }
1554
1555                 if (reclaim) {
1556                         /* Invoke any callbacks, transfer the skb to caller, and
1557                          * fire off the (possibly) blocking iwl_send_cmd()
1558                          * as we reclaim the driver command queue */
1559                         if (rxb && rxb->skb)
1560                                 iwl_tx_cmd_complete(priv, rxb);
1561                         else
1562                                 IWL_WARN(priv, "Claim null rxb?\n");
1563                 }
1564
1565                 /* For now we just don't re-use anything.  We can tweak this
1566                  * later to try and re-use notification packets and SKBs that
1567                  * fail to Rx correctly */
1568                 if (rxb->skb != NULL) {
1569                         priv->alloc_rxb_skb--;
1570                         dev_kfree_skb_any(rxb->skb);
1571                         rxb->skb = NULL;
1572                 }
1573
1574                 pci_unmap_single(priv->pci_dev, rxb->real_dma_addr,
1575                                 priv->hw_params.rx_buf_size,
1576                                 PCI_DMA_FROMDEVICE);
1577                 spin_lock_irqsave(&rxq->lock, flags);
1578                 list_add_tail(&rxb->list, &priv->rxq.rx_used);
1579                 spin_unlock_irqrestore(&rxq->lock, flags);
1580                 i = (i + 1) & RX_QUEUE_MASK;
1581                 /* If there are a lot of unused frames,
1582                  * restock the Rx queue so ucode won't assert. */
1583                 if (fill_rx) {
1584                         count++;
1585                         if (count >= 8) {
1586                                 priv->rxq.read = i;
1587                                 __iwl3945_rx_replenish(priv);
1588                                 count = 0;
1589                         }
1590                 }
1591         }
1592
1593         /* Backtrack one entry */
1594         priv->rxq.read = i;
1595         iwl3945_rx_queue_restock(priv);
1596 }
1597
1598 /* call this function to flush any scheduled tasklet */
1599 static inline void iwl_synchronize_irq(struct iwl_priv *priv)
1600 {
1601         /* wait to make sure we flush pending tasklet*/
1602         synchronize_irq(priv->pci_dev->irq);
1603         tasklet_kill(&priv->irq_tasklet);
1604 }
1605
1606 static const char *desc_lookup(int i)
1607 {
1608         switch (i) {
1609         case 1:
1610                 return "FAIL";
1611         case 2:
1612                 return "BAD_PARAM";
1613         case 3:
1614                 return "BAD_CHECKSUM";
1615         case 4:
1616                 return "NMI_INTERRUPT";
1617         case 5:
1618                 return "SYSASSERT";
1619         case 6:
1620                 return "FATAL_ERROR";
1621         }
1622
1623         return "UNKNOWN";
1624 }
1625
1626 #define ERROR_START_OFFSET  (1 * sizeof(u32))
1627 #define ERROR_ELEM_SIZE     (7 * sizeof(u32))
1628
1629 static void iwl3945_dump_nic_error_log(struct iwl_priv *priv)
1630 {
1631         u32 i;
1632         u32 desc, time, count, base, data1;
1633         u32 blink1, blink2, ilink1, ilink2;
1634         int rc;
1635
1636         base = le32_to_cpu(priv->card_alive.error_event_table_ptr);
1637
1638         if (!iwl3945_hw_valid_rtc_data_addr(base)) {
1639                 IWL_ERR(priv, "Not valid error log pointer 0x%08X\n", base);
1640                 return;
1641         }
1642
1643         rc = iwl_grab_nic_access(priv);
1644         if (rc) {
1645                 IWL_WARN(priv, "Can not read from adapter at this time.\n");
1646                 return;
1647         }
1648
1649         count = iwl_read_targ_mem(priv, base);
1650
1651         if (ERROR_START_OFFSET <= count * ERROR_ELEM_SIZE) {
1652                 IWL_ERR(priv, "Start IWL Error Log Dump:\n");
1653                 IWL_ERR(priv, "Status: 0x%08lX, count: %d\n",
1654                         priv->status, count);
1655         }
1656
1657         IWL_ERR(priv, "Desc       Time       asrtPC  blink2 "
1658                   "ilink1  nmiPC   Line\n");
1659         for (i = ERROR_START_OFFSET;
1660              i < (count * ERROR_ELEM_SIZE) + ERROR_START_OFFSET;
1661              i += ERROR_ELEM_SIZE) {
1662                 desc = iwl_read_targ_mem(priv, base + i);
1663                 time =
1664                     iwl_read_targ_mem(priv, base + i + 1 * sizeof(u32));
1665                 blink1 =
1666                     iwl_read_targ_mem(priv, base + i + 2 * sizeof(u32));
1667                 blink2 =
1668                     iwl_read_targ_mem(priv, base + i + 3 * sizeof(u32));
1669                 ilink1 =
1670                     iwl_read_targ_mem(priv, base + i + 4 * sizeof(u32));
1671                 ilink2 =
1672                     iwl_read_targ_mem(priv, base + i + 5 * sizeof(u32));
1673                 data1 =
1674                     iwl_read_targ_mem(priv, base + i + 6 * sizeof(u32));
1675
1676                 IWL_ERR(priv,
1677                         "%-13s (#%d) %010u 0x%05X 0x%05X 0x%05X 0x%05X %u\n\n",
1678                         desc_lookup(desc), desc, time, blink1, blink2,
1679                         ilink1, ilink2, data1);
1680         }
1681
1682         iwl_release_nic_access(priv);
1683
1684 }
1685
1686 #define EVENT_START_OFFSET  (6 * sizeof(u32))
1687
1688 /**
1689  * iwl3945_print_event_log - Dump error event log to syslog
1690  *
1691  * NOTE: Must be called with iwl_grab_nic_access() already obtained!
1692  */
1693 static void iwl3945_print_event_log(struct iwl_priv *priv, u32 start_idx,
1694                                 u32 num_events, u32 mode)
1695 {
1696         u32 i;
1697         u32 base;       /* SRAM byte address of event log header */
1698         u32 event_size; /* 2 u32s, or 3 u32s if timestamp recorded */
1699         u32 ptr;        /* SRAM byte address of log data */
1700         u32 ev, time, data; /* event log data */
1701
1702         if (num_events == 0)
1703                 return;
1704
1705         base = le32_to_cpu(priv->card_alive.log_event_table_ptr);
1706
1707         if (mode == 0)
1708                 event_size = 2 * sizeof(u32);
1709         else
1710                 event_size = 3 * sizeof(u32);
1711
1712         ptr = base + EVENT_START_OFFSET + (start_idx * event_size);
1713
1714         /* "time" is actually "data" for mode 0 (no timestamp).
1715          * place event id # at far right for easier visual parsing. */
1716         for (i = 0; i < num_events; i++) {
1717                 ev = iwl_read_targ_mem(priv, ptr);
1718                 ptr += sizeof(u32);
1719                 time = iwl_read_targ_mem(priv, ptr);
1720                 ptr += sizeof(u32);
1721                 if (mode == 0) {
1722                         /* data, ev */
1723                         IWL_ERR(priv, "0x%08x\t%04u\n", time, ev);
1724                 } else {
1725                         data = iwl_read_targ_mem(priv, ptr);
1726                         ptr += sizeof(u32);
1727                         IWL_ERR(priv, "%010u\t0x%08x\t%04u\n", time, data, ev);
1728                 }
1729         }
1730 }
1731
1732 static void iwl3945_dump_nic_event_log(struct iwl_priv *priv)
1733 {
1734         int rc;
1735         u32 base;       /* SRAM byte address of event log header */
1736         u32 capacity;   /* event log capacity in # entries */
1737         u32 mode;       /* 0 - no timestamp, 1 - timestamp recorded */
1738         u32 num_wraps;  /* # times uCode wrapped to top of log */
1739         u32 next_entry; /* index of next entry to be written by uCode */
1740         u32 size;       /* # entries that we'll print */
1741
1742         base = le32_to_cpu(priv->card_alive.log_event_table_ptr);
1743         if (!iwl3945_hw_valid_rtc_data_addr(base)) {
1744                 IWL_ERR(priv, "Invalid event log pointer 0x%08X\n", base);
1745                 return;
1746         }
1747
1748         rc = iwl_grab_nic_access(priv);
1749         if (rc) {
1750                 IWL_WARN(priv, "Can not read from adapter at this time.\n");
1751                 return;
1752         }
1753
1754         /* event log header */
1755         capacity = iwl_read_targ_mem(priv, base);
1756         mode = iwl_read_targ_mem(priv, base + (1 * sizeof(u32)));
1757         num_wraps = iwl_read_targ_mem(priv, base + (2 * sizeof(u32)));
1758         next_entry = iwl_read_targ_mem(priv, base + (3 * sizeof(u32)));
1759
1760         size = num_wraps ? capacity : next_entry;
1761
1762         /* bail out if nothing in log */
1763         if (size == 0) {
1764                 IWL_ERR(priv, "Start IWL Event Log Dump: nothing in log\n");
1765                 iwl_release_nic_access(priv);
1766                 return;
1767         }
1768
1769         IWL_ERR(priv, "Start IWL Event Log Dump: display count %d, wraps %d\n",
1770                   size, num_wraps);
1771
1772         /* if uCode has wrapped back to top of log, start at the oldest entry,
1773          * i.e the next one that uCode would fill. */
1774         if (num_wraps)
1775                 iwl3945_print_event_log(priv, next_entry,
1776                                     capacity - next_entry, mode);
1777
1778         /* (then/else) start at top of log */
1779         iwl3945_print_event_log(priv, 0, next_entry, mode);
1780
1781         iwl_release_nic_access(priv);
1782 }
1783
1784 static void iwl3945_error_recovery(struct iwl_priv *priv)
1785 {
1786         unsigned long flags;
1787
1788         memcpy(&priv->staging_rxon, &priv->recovery_rxon,
1789                sizeof(priv->staging_rxon));
1790         priv->staging_rxon.filter_flags &= ~RXON_FILTER_ASSOC_MSK;
1791         iwlcore_commit_rxon(priv);
1792
1793         priv->cfg->ops->smgmt->add_station(priv, priv->bssid, 1, 0, NULL);
1794
1795         spin_lock_irqsave(&priv->lock, flags);
1796         priv->assoc_id = le16_to_cpu(priv->staging_rxon.assoc_id);
1797         priv->error_recovering = 0;
1798         spin_unlock_irqrestore(&priv->lock, flags);
1799 }
1800
1801 static void iwl3945_irq_tasklet(struct iwl_priv *priv)
1802 {
1803         u32 inta, handled = 0;
1804         u32 inta_fh;
1805         unsigned long flags;
1806 #ifdef CONFIG_IWLWIFI_DEBUG
1807         u32 inta_mask;
1808 #endif
1809
1810         spin_lock_irqsave(&priv->lock, flags);
1811
1812         /* Ack/clear/reset pending uCode interrupts.
1813          * Note:  Some bits in CSR_INT are "OR" of bits in CSR_FH_INT_STATUS,
1814          *  and will clear only when CSR_FH_INT_STATUS gets cleared. */
1815         inta = iwl_read32(priv, CSR_INT);
1816         iwl_write32(priv, CSR_INT, inta);
1817
1818         /* Ack/clear/reset pending flow-handler (DMA) interrupts.
1819          * Any new interrupts that happen after this, either while we're
1820          * in this tasklet, or later, will show up in next ISR/tasklet. */
1821         inta_fh = iwl_read32(priv, CSR_FH_INT_STATUS);
1822         iwl_write32(priv, CSR_FH_INT_STATUS, inta_fh);
1823
1824 #ifdef CONFIG_IWLWIFI_DEBUG
1825         if (priv->debug_level & IWL_DL_ISR) {
1826                 /* just for debug */
1827                 inta_mask = iwl_read32(priv, CSR_INT_MASK);
1828                 IWL_DEBUG_ISR(priv, "inta 0x%08x, enabled 0x%08x, fh 0x%08x\n",
1829                               inta, inta_mask, inta_fh);
1830         }
1831 #endif
1832
1833         /* Since CSR_INT and CSR_FH_INT_STATUS reads and clears are not
1834          * atomic, make sure that inta covers all the interrupts that
1835          * we've discovered, even if FH interrupt came in just after
1836          * reading CSR_INT. */
1837         if (inta_fh & CSR39_FH_INT_RX_MASK)
1838                 inta |= CSR_INT_BIT_FH_RX;
1839         if (inta_fh & CSR39_FH_INT_TX_MASK)
1840                 inta |= CSR_INT_BIT_FH_TX;
1841
1842         /* Now service all interrupt bits discovered above. */
1843         if (inta & CSR_INT_BIT_HW_ERR) {
1844                 IWL_ERR(priv, "Microcode HW error detected.  Restarting.\n");
1845
1846                 /* Tell the device to stop sending interrupts */
1847                 iwl_disable_interrupts(priv);
1848
1849                 priv->isr_stats.hw++;
1850                 iwl_irq_handle_error(priv);
1851
1852                 handled |= CSR_INT_BIT_HW_ERR;
1853
1854                 spin_unlock_irqrestore(&priv->lock, flags);
1855
1856                 return;
1857         }
1858
1859 #ifdef CONFIG_IWLWIFI_DEBUG
1860         if (priv->debug_level & (IWL_DL_ISR)) {
1861                 /* NIC fires this, but we don't use it, redundant with WAKEUP */
1862                 if (inta & CSR_INT_BIT_SCD) {
1863                         IWL_DEBUG_ISR(priv, "Scheduler finished to transmit "
1864                                       "the frame/frames.\n");
1865                         priv->isr_stats.sch++;
1866                 }
1867
1868                 /* Alive notification via Rx interrupt will do the real work */
1869                 if (inta & CSR_INT_BIT_ALIVE) {
1870                         IWL_DEBUG_ISR(priv, "Alive interrupt\n");
1871                         priv->isr_stats.alive++;
1872                 }
1873         }
1874 #endif
1875         /* Safely ignore these bits for debug checks below */
1876         inta &= ~(CSR_INT_BIT_SCD | CSR_INT_BIT_ALIVE);
1877
1878         /* Error detected by uCode */
1879         if (inta & CSR_INT_BIT_SW_ERR) {
1880                 IWL_ERR(priv, "Microcode SW error detected. "
1881                         "Restarting 0x%X.\n", inta);
1882                 priv->isr_stats.sw++;
1883                 priv->isr_stats.sw_err = inta;
1884                 iwl_irq_handle_error(priv);
1885                 handled |= CSR_INT_BIT_SW_ERR;
1886         }
1887
1888         /* uCode wakes up after power-down sleep */
1889         if (inta & CSR_INT_BIT_WAKEUP) {
1890                 IWL_DEBUG_ISR(priv, "Wakeup interrupt\n");
1891                 iwl_rx_queue_update_write_ptr(priv, &priv->rxq);
1892                 iwl_txq_update_write_ptr(priv, &priv->txq[0]);
1893                 iwl_txq_update_write_ptr(priv, &priv->txq[1]);
1894                 iwl_txq_update_write_ptr(priv, &priv->txq[2]);
1895                 iwl_txq_update_write_ptr(priv, &priv->txq[3]);
1896                 iwl_txq_update_write_ptr(priv, &priv->txq[4]);
1897                 iwl_txq_update_write_ptr(priv, &priv->txq[5]);
1898
1899                 priv->isr_stats.wakeup++;
1900                 handled |= CSR_INT_BIT_WAKEUP;
1901         }
1902
1903         /* All uCode command responses, including Tx command responses,
1904          * Rx "responses" (frame-received notification), and other
1905          * notifications from uCode come through here*/
1906         if (inta & (CSR_INT_BIT_FH_RX | CSR_INT_BIT_SW_RX)) {
1907                 iwl3945_rx_handle(priv);
1908                 priv->isr_stats.rx++;
1909                 handled |= (CSR_INT_BIT_FH_RX | CSR_INT_BIT_SW_RX);
1910         }
1911
1912         if (inta & CSR_INT_BIT_FH_TX) {
1913                 IWL_DEBUG_ISR(priv, "Tx interrupt\n");
1914                 priv->isr_stats.tx++;
1915
1916                 iwl_write32(priv, CSR_FH_INT_STATUS, (1 << 6));
1917                 if (!iwl_grab_nic_access(priv)) {
1918                         iwl_write_direct32(priv, FH39_TCSR_CREDIT
1919                                              (FH39_SRVC_CHNL), 0x0);
1920                         iwl_release_nic_access(priv);
1921                 }
1922                 handled |= CSR_INT_BIT_FH_TX;
1923         }
1924
1925         if (inta & ~handled) {
1926                 IWL_ERR(priv, "Unhandled INTA bits 0x%08x\n", inta & ~handled);
1927                 priv->isr_stats.unhandled++;
1928         }
1929
1930         if (inta & ~CSR_INI_SET_MASK) {
1931                 IWL_WARN(priv, "Disabled INTA bits 0x%08x were pending\n",
1932                          inta & ~CSR_INI_SET_MASK);
1933                 IWL_WARN(priv, "   with FH_INT = 0x%08x\n", inta_fh);
1934         }
1935
1936         /* Re-enable all interrupts */
1937         /* only Re-enable if disabled by irq */
1938         if (test_bit(STATUS_INT_ENABLED, &priv->status))
1939                 iwl_enable_interrupts(priv);
1940
1941 #ifdef CONFIG_IWLWIFI_DEBUG
1942         if (priv->debug_level & (IWL_DL_ISR)) {
1943                 inta = iwl_read32(priv, CSR_INT);
1944                 inta_mask = iwl_read32(priv, CSR_INT_MASK);
1945                 inta_fh = iwl_read32(priv, CSR_FH_INT_STATUS);
1946                 IWL_DEBUG_ISR(priv, "End inta 0x%08x, enabled 0x%08x, fh 0x%08x, "
1947                         "flags 0x%08lx\n", inta, inta_mask, inta_fh, flags);
1948         }
1949 #endif
1950         spin_unlock_irqrestore(&priv->lock, flags);
1951 }
1952
1953 static int iwl3945_get_channels_for_scan(struct iwl_priv *priv,
1954                                          enum ieee80211_band band,
1955                                      u8 is_active, u8 n_probes,
1956                                      struct iwl3945_scan_channel *scan_ch)
1957 {
1958         const struct ieee80211_channel *channels = NULL;
1959         const struct ieee80211_supported_band *sband;
1960         const struct iwl_channel_info *ch_info;
1961         u16 passive_dwell = 0;
1962         u16 active_dwell = 0;
1963         int added, i;
1964
1965         sband = iwl_get_hw_mode(priv, band);
1966         if (!sband)
1967                 return 0;
1968
1969         channels = sband->channels;
1970
1971         active_dwell = iwl_get_active_dwell_time(priv, band, n_probes);
1972         passive_dwell = iwl_get_passive_dwell_time(priv, band);
1973
1974         if (passive_dwell <= active_dwell)
1975                 passive_dwell = active_dwell + 1;
1976
1977         for (i = 0, added = 0; i < sband->n_channels; i++) {
1978                 if (channels[i].flags & IEEE80211_CHAN_DISABLED)
1979                         continue;
1980
1981                 scan_ch->channel = channels[i].hw_value;
1982
1983                 ch_info = iwl_get_channel_info(priv, band, scan_ch->channel);
1984                 if (!is_channel_valid(ch_info)) {
1985                         IWL_DEBUG_SCAN(priv, "Channel %d is INVALID for this band.\n",
1986                                        scan_ch->channel);
1987                         continue;
1988                 }
1989
1990                 scan_ch->active_dwell = cpu_to_le16(active_dwell);
1991                 scan_ch->passive_dwell = cpu_to_le16(passive_dwell);
1992                 /* If passive , set up for auto-switch
1993                  *  and use long active_dwell time.
1994                  */
1995                 if (!is_active || is_channel_passive(ch_info) ||
1996                     (channels[i].flags & IEEE80211_CHAN_PASSIVE_SCAN)) {
1997                         scan_ch->type = 0;      /* passive */
1998                         if (IWL_UCODE_API(priv->ucode_ver) == 1)
1999                                 scan_ch->active_dwell = cpu_to_le16(passive_dwell - 1);
2000                 } else {
2001                         scan_ch->type = 1;      /* active */
2002                 }
2003
2004                 /* Set direct probe bits. These may be used both for active
2005                  * scan channels (probes gets sent right away),
2006                  * or for passive channels (probes get se sent only after
2007                  * hearing clear Rx packet).*/
2008                 if (IWL_UCODE_API(priv->ucode_ver) >= 2) {
2009                         if (n_probes)
2010                                 scan_ch->type |= IWL39_SCAN_PROBE_MASK(n_probes);
2011                 } else {
2012                         /* uCode v1 does not allow setting direct probe bits on
2013                          * passive channel. */
2014                         if ((scan_ch->type & 1) && n_probes)
2015                                 scan_ch->type |= IWL39_SCAN_PROBE_MASK(n_probes);
2016                 }
2017
2018                 /* Set txpower levels to defaults */
2019                 scan_ch->tpc.dsp_atten = 110;
2020                 /* scan_pwr_info->tpc.dsp_atten; */
2021
2022                 /*scan_pwr_info->tpc.tx_gain; */
2023                 if (band == IEEE80211_BAND_5GHZ)
2024                         scan_ch->tpc.tx_gain = ((1 << 5) | (3 << 3)) | 3;
2025                 else {
2026                         scan_ch->tpc.tx_gain = ((1 << 5) | (5 << 3));
2027                         /* NOTE: if we were doing 6Mb OFDM for scans we'd use
2028                          * power level:
2029                          * scan_ch->tpc.tx_gain = ((1 << 5) | (2 << 3)) | 3;
2030                          */
2031                 }
2032
2033                 IWL_DEBUG_SCAN(priv, "Scanning %d [%s %d]\n",
2034                                scan_ch->channel,
2035                                (scan_ch->type & 1) ? "ACTIVE" : "PASSIVE",
2036                                (scan_ch->type & 1) ?
2037                                active_dwell : passive_dwell);
2038
2039                 scan_ch++;
2040                 added++;
2041         }
2042
2043         IWL_DEBUG_SCAN(priv, "total channels to scan %d \n", added);
2044         return added;
2045 }
2046
2047 static void iwl3945_init_hw_rates(struct iwl_priv *priv,
2048                               struct ieee80211_rate *rates)
2049 {
2050         int i;
2051
2052         for (i = 0; i < IWL_RATE_COUNT; i++) {
2053                 rates[i].bitrate = iwl3945_rates[i].ieee * 5;
2054                 rates[i].hw_value = i; /* Rate scaling will work on indexes */
2055                 rates[i].hw_value_short = i;
2056                 rates[i].flags = 0;
2057                 if ((i > IWL39_LAST_OFDM_RATE) || (i < IWL_FIRST_OFDM_RATE)) {
2058                         /*
2059                          * If CCK != 1M then set short preamble rate flag.
2060                          */
2061                         rates[i].flags |= (iwl3945_rates[i].plcp == 10) ?
2062                                 0 : IEEE80211_RATE_SHORT_PREAMBLE;
2063                 }
2064         }
2065 }
2066
2067 /******************************************************************************
2068  *
2069  * uCode download functions
2070  *
2071  ******************************************************************************/
2072
2073 static void iwl3945_dealloc_ucode_pci(struct iwl_priv *priv)
2074 {
2075         iwl_free_fw_desc(priv->pci_dev, &priv->ucode_code);
2076         iwl_free_fw_desc(priv->pci_dev, &priv->ucode_data);
2077         iwl_free_fw_desc(priv->pci_dev, &priv->ucode_data_backup);
2078         iwl_free_fw_desc(priv->pci_dev, &priv->ucode_init);
2079         iwl_free_fw_desc(priv->pci_dev, &priv->ucode_init_data);
2080         iwl_free_fw_desc(priv->pci_dev, &priv->ucode_boot);
2081 }
2082
2083 /**
2084  * iwl3945_verify_inst_full - verify runtime uCode image in card vs. host,
2085  *     looking at all data.
2086  */
2087 static int iwl3945_verify_inst_full(struct iwl_priv *priv, __le32 *image, u32 len)
2088 {
2089         u32 val;
2090         u32 save_len = len;
2091         int rc = 0;
2092         u32 errcnt;
2093
2094         IWL_DEBUG_INFO(priv, "ucode inst image size is %u\n", len);
2095
2096         rc = iwl_grab_nic_access(priv);
2097         if (rc)
2098                 return rc;
2099
2100         iwl_write_direct32(priv, HBUS_TARG_MEM_RADDR,
2101                                IWL39_RTC_INST_LOWER_BOUND);
2102
2103         errcnt = 0;
2104         for (; len > 0; len -= sizeof(u32), image++) {
2105                 /* read data comes through single port, auto-incr addr */
2106                 /* NOTE: Use the debugless read so we don't flood kernel log
2107                  * if IWL_DL_IO is set */
2108                 val = _iwl_read_direct32(priv, HBUS_TARG_MEM_RDAT);
2109                 if (val != le32_to_cpu(*image)) {
2110                         IWL_ERR(priv, "uCode INST section is invalid at "
2111                                   "offset 0x%x, is 0x%x, s/b 0x%x\n",
2112                                   save_len - len, val, le32_to_cpu(*image));
2113                         rc = -EIO;
2114                         errcnt++;
2115                         if (errcnt >= 20)
2116                                 break;
2117                 }
2118         }
2119
2120         iwl_release_nic_access(priv);
2121
2122         if (!errcnt)
2123                 IWL_DEBUG_INFO(priv,
2124                         "ucode image in INSTRUCTION memory is good\n");
2125
2126         return rc;
2127 }
2128
2129
2130 /**
2131  * iwl3945_verify_inst_sparse - verify runtime uCode image in card vs. host,
2132  *   using sample data 100 bytes apart.  If these sample points are good,
2133  *   it's a pretty good bet that everything between them is good, too.
2134  */
2135 static int iwl3945_verify_inst_sparse(struct iwl_priv *priv, __le32 *image, u32 len)
2136 {
2137         u32 val;
2138         int rc = 0;
2139         u32 errcnt = 0;
2140         u32 i;
2141
2142         IWL_DEBUG_INFO(priv, "ucode inst image size is %u\n", len);
2143
2144         rc = iwl_grab_nic_access(priv);
2145         if (rc)
2146                 return rc;
2147
2148         for (i = 0; i < len; i += 100, image += 100/sizeof(u32)) {
2149                 /* read data comes through single port, auto-incr addr */
2150                 /* NOTE: Use the debugless read so we don't flood kernel log
2151                  * if IWL_DL_IO is set */
2152                 iwl_write_direct32(priv, HBUS_TARG_MEM_RADDR,
2153                         i + IWL39_RTC_INST_LOWER_BOUND);
2154                 val = _iwl_read_direct32(priv, HBUS_TARG_MEM_RDAT);
2155                 if (val != le32_to_cpu(*image)) {
2156 #if 0 /* Enable this if you want to see details */
2157                         IWL_ERR(priv, "uCode INST section is invalid at "
2158                                   "offset 0x%x, is 0x%x, s/b 0x%x\n",
2159                                   i, val, *image);
2160 #endif
2161                         rc = -EIO;
2162                         errcnt++;
2163                         if (errcnt >= 3)
2164                                 break;
2165                 }
2166         }
2167
2168         iwl_release_nic_access(priv);
2169
2170         return rc;
2171 }
2172
2173
2174 /**
2175  * iwl3945_verify_ucode - determine which instruction image is in SRAM,
2176  *    and verify its contents
2177  */
2178 static int iwl3945_verify_ucode(struct iwl_priv *priv)
2179 {
2180         __le32 *image;
2181         u32 len;
2182         int rc = 0;
2183
2184         /* Try bootstrap */
2185         image = (__le32 *)priv->ucode_boot.v_addr;
2186         len = priv->ucode_boot.len;
2187         rc = iwl3945_verify_inst_sparse(priv, image, len);
2188         if (rc == 0) {
2189                 IWL_DEBUG_INFO(priv, "Bootstrap uCode is good in inst SRAM\n");
2190                 return 0;
2191         }
2192
2193         /* Try initialize */
2194         image = (__le32 *)priv->ucode_init.v_addr;
2195         len = priv->ucode_init.len;
2196         rc = iwl3945_verify_inst_sparse(priv, image, len);
2197         if (rc == 0) {
2198                 IWL_DEBUG_INFO(priv, "Initialize uCode is good in inst SRAM\n");
2199                 return 0;
2200         }
2201
2202         /* Try runtime/protocol */
2203         image = (__le32 *)priv->ucode_code.v_addr;
2204         len = priv->ucode_code.len;
2205         rc = iwl3945_verify_inst_sparse(priv, image, len);
2206         if (rc == 0) {
2207                 IWL_DEBUG_INFO(priv, "Runtime uCode is good in inst SRAM\n");
2208                 return 0;
2209         }
2210
2211         IWL_ERR(priv, "NO VALID UCODE IMAGE IN INSTRUCTION SRAM!!\n");
2212
2213         /* Since nothing seems to match, show first several data entries in
2214          * instruction SRAM, so maybe visual inspection will give a clue.
2215          * Selection of bootstrap image (vs. other images) is arbitrary. */
2216         image = (__le32 *)priv->ucode_boot.v_addr;
2217         len = priv->ucode_boot.len;
2218         rc = iwl3945_verify_inst_full(priv, image, len);
2219
2220         return rc;
2221 }
2222
2223 static void iwl3945_nic_start(struct iwl_priv *priv)
2224 {
2225         /* Remove all resets to allow NIC to operate */
2226         iwl_write32(priv, CSR_RESET, 0);
2227 }
2228
2229 /**
2230  * iwl3945_read_ucode - Read uCode images from disk file.
2231  *
2232  * Copy into buffers for card to fetch via bus-mastering
2233  */
2234 static int iwl3945_read_ucode(struct iwl_priv *priv)
2235 {
2236         struct iwl_ucode *ucode;
2237         int ret = -EINVAL, index;
2238         const struct firmware *ucode_raw;
2239         /* firmware file name contains uCode/driver compatibility version */
2240         const char *name_pre = priv->cfg->fw_name_pre;
2241         const unsigned int api_max = priv->cfg->ucode_api_max;
2242         const unsigned int api_min = priv->cfg->ucode_api_min;
2243         char buf[25];
2244         u8 *src;
2245         size_t len;
2246         u32 api_ver, inst_size, data_size, init_size, init_data_size, boot_size;
2247
2248         /* Ask kernel firmware_class module to get the boot firmware off disk.
2249          * request_firmware() is synchronous, file is in memory on return. */
2250         for (index = api_max; index >= api_min; index--) {
2251                 sprintf(buf, "%s%u%s", name_pre, index, ".ucode");
2252                 ret = request_firmware(&ucode_raw, buf, &priv->pci_dev->dev);
2253                 if (ret < 0) {
2254                         IWL_ERR(priv, "%s firmware file req failed: %d\n",
2255                                   buf, ret);
2256                         if (ret == -ENOENT)
2257                                 continue;
2258                         else
2259                                 goto error;
2260                 } else {
2261                         if (index < api_max)
2262                                 IWL_ERR(priv, "Loaded firmware %s, "
2263                                         "which is deprecated. "
2264                                         " Please use API v%u instead.\n",
2265                                           buf, api_max);
2266                         IWL_DEBUG_INFO(priv, "Got firmware '%s' file "
2267                                        "(%zd bytes) from disk\n",
2268                                        buf, ucode_raw->size);
2269                         break;
2270                 }
2271         }
2272
2273         if (ret < 0)
2274                 goto error;
2275
2276         /* Make sure that we got at least our header! */
2277         if (ucode_raw->size < sizeof(*ucode)) {
2278                 IWL_ERR(priv, "File size way too small!\n");
2279                 ret = -EINVAL;
2280                 goto err_release;
2281         }
2282
2283         /* Data from ucode file:  header followed by uCode images */
2284         ucode = (void *)ucode_raw->data;
2285
2286         priv->ucode_ver = le32_to_cpu(ucode->ver);
2287         api_ver = IWL_UCODE_API(priv->ucode_ver);
2288         inst_size = le32_to_cpu(ucode->inst_size);
2289         data_size = le32_to_cpu(ucode->data_size);
2290         init_size = le32_to_cpu(ucode->init_size);
2291         init_data_size = le32_to_cpu(ucode->init_data_size);
2292         boot_size = le32_to_cpu(ucode->boot_size);
2293
2294         /* api_ver should match the api version forming part of the
2295          * firmware filename ... but we don't check for that and only rely
2296          * on the API version read from firmware header from here on forward */
2297
2298         if (api_ver < api_min || api_ver > api_max) {
2299                 IWL_ERR(priv, "Driver unable to support your firmware API. "
2300                           "Driver supports v%u, firmware is v%u.\n",
2301                           api_max, api_ver);
2302                 priv->ucode_ver = 0;
2303                 ret = -EINVAL;
2304                 goto err_release;
2305         }
2306         if (api_ver != api_max)
2307                 IWL_ERR(priv, "Firmware has old API version. Expected %u, "
2308                           "got %u. New firmware can be obtained "
2309                           "from http://www.intellinuxwireless.org.\n",
2310                           api_max, api_ver);
2311
2312         IWL_INFO(priv, "loaded firmware version %u.%u.%u.%u\n",
2313                 IWL_UCODE_MAJOR(priv->ucode_ver),
2314                 IWL_UCODE_MINOR(priv->ucode_ver),
2315                 IWL_UCODE_API(priv->ucode_ver),
2316                 IWL_UCODE_SERIAL(priv->ucode_ver));
2317
2318         IWL_DEBUG_INFO(priv, "f/w package hdr ucode version raw = 0x%x\n",
2319                        priv->ucode_ver);
2320         IWL_DEBUG_INFO(priv, "f/w package hdr runtime inst size = %u\n",
2321                        inst_size);
2322         IWL_DEBUG_INFO(priv, "f/w package hdr runtime data size = %u\n",
2323                        data_size);
2324         IWL_DEBUG_INFO(priv, "f/w package hdr init inst size = %u\n",
2325                        init_size);
2326         IWL_DEBUG_INFO(priv, "f/w package hdr init data size = %u\n",
2327                        init_data_size);
2328         IWL_DEBUG_INFO(priv, "f/w package hdr boot inst size = %u\n",
2329                        boot_size);
2330
2331
2332         /* Verify size of file vs. image size info in file's header */
2333         if (ucode_raw->size < sizeof(*ucode) +
2334                 inst_size + data_size + init_size +
2335                 init_data_size + boot_size) {
2336
2337                 IWL_DEBUG_INFO(priv, "uCode file size %zd too small\n",
2338                                ucode_raw->size);
2339                 ret = -EINVAL;
2340                 goto err_release;
2341         }
2342
2343         /* Verify that uCode images will fit in card's SRAM */
2344         if (inst_size > IWL39_MAX_INST_SIZE) {
2345                 IWL_DEBUG_INFO(priv, "uCode instr len %d too large to fit in\n",
2346                                inst_size);
2347                 ret = -EINVAL;
2348                 goto err_release;
2349         }
2350
2351         if (data_size > IWL39_MAX_DATA_SIZE) {
2352                 IWL_DEBUG_INFO(priv, "uCode data len %d too large to fit in\n",
2353                                data_size);
2354                 ret = -EINVAL;
2355                 goto err_release;
2356         }
2357         if (init_size > IWL39_MAX_INST_SIZE) {
2358                 IWL_DEBUG_INFO(priv,
2359                                 "uCode init instr len %d too large to fit in\n",
2360                                 init_size);
2361                 ret = -EINVAL;
2362                 goto err_release;
2363         }
2364         if (init_data_size > IWL39_MAX_DATA_SIZE) {
2365                 IWL_DEBUG_INFO(priv,
2366                                 "uCode init data len %d too large to fit in\n",
2367                                 init_data_size);
2368                 ret = -EINVAL;
2369                 goto err_release;
2370         }
2371         if (boot_size > IWL39_MAX_BSM_SIZE) {
2372                 IWL_DEBUG_INFO(priv,
2373                                 "uCode boot instr len %d too large to fit in\n",
2374                                 boot_size);
2375                 ret = -EINVAL;
2376                 goto err_release;
2377         }
2378
2379         /* Allocate ucode buffers for card's bus-master loading ... */
2380
2381         /* Runtime instructions and 2 copies of data:
2382          * 1) unmodified from disk
2383          * 2) backup cache for save/restore during power-downs */
2384         priv->ucode_code.len = inst_size;
2385         iwl_alloc_fw_desc(priv->pci_dev, &priv->ucode_code);
2386
2387         priv->ucode_data.len = data_size;
2388         iwl_alloc_fw_desc(priv->pci_dev, &priv->ucode_data);
2389
2390         priv->ucode_data_backup.len = data_size;
2391         iwl_alloc_fw_desc(priv->pci_dev, &priv->ucode_data_backup);
2392
2393         if (!priv->ucode_code.v_addr || !priv->ucode_data.v_addr ||
2394             !priv->ucode_data_backup.v_addr)
2395                 goto err_pci_alloc;
2396
2397         /* Initialization instructions and data */
2398         if (init_size && init_data_size) {
2399                 priv->ucode_init.len = init_size;
2400                 iwl_alloc_fw_desc(priv->pci_dev, &priv->ucode_init);
2401
2402                 priv->ucode_init_data.len = init_data_size;
2403                 iwl_alloc_fw_desc(priv->pci_dev, &priv->ucode_init_data);
2404
2405                 if (!priv->ucode_init.v_addr || !priv->ucode_init_data.v_addr)
2406                         goto err_pci_alloc;
2407         }
2408
2409         /* Bootstrap (instructions only, no data) */
2410         if (boot_size) {
2411                 priv->ucode_boot.len = boot_size;
2412                 iwl_alloc_fw_desc(priv->pci_dev, &priv->ucode_boot);
2413
2414                 if (!priv->ucode_boot.v_addr)
2415                         goto err_pci_alloc;
2416         }
2417
2418         /* Copy images into buffers for card's bus-master reads ... */
2419
2420         /* Runtime instructions (first block of data in file) */
2421         src = &ucode->data[0];
2422         len = priv->ucode_code.len;
2423         IWL_DEBUG_INFO(priv,
2424                 "Copying (but not loading) uCode instr len %zd\n", len);
2425         memcpy(priv->ucode_code.v_addr, src, len);
2426         IWL_DEBUG_INFO(priv, "uCode instr buf vaddr = 0x%p, paddr = 0x%08x\n",
2427                 priv->ucode_code.v_addr, (u32)priv->ucode_code.p_addr);
2428
2429         /* Runtime data (2nd block)
2430          * NOTE:  Copy into backup buffer will be done in iwl3945_up()  */
2431         src = &ucode->data[inst_size];
2432         len = priv->ucode_data.len;
2433         IWL_DEBUG_INFO(priv,
2434                 "Copying (but not loading) uCode data len %zd\n", len);
2435         memcpy(priv->ucode_data.v_addr, src, len);
2436         memcpy(priv->ucode_data_backup.v_addr, src, len);
2437
2438         /* Initialization instructions (3rd block) */
2439         if (init_size) {
2440                 src = &ucode->data[inst_size + data_size];
2441                 len = priv->ucode_init.len;
2442                 IWL_DEBUG_INFO(priv,
2443                         "Copying (but not loading) init instr len %zd\n", len);
2444                 memcpy(priv->ucode_init.v_addr, src, len);
2445         }
2446
2447         /* Initialization data (4th block) */
2448         if (init_data_size) {
2449                 src = &ucode->data[inst_size + data_size + init_size];
2450                 len = priv->ucode_init_data.len;
2451                 IWL_DEBUG_INFO(priv,
2452                         "Copying (but not loading) init data len %zd\n", len);
2453                 memcpy(priv->ucode_init_data.v_addr, src, len);
2454         }
2455
2456         /* Bootstrap instructions (5th block) */
2457         src = &ucode->data[inst_size + data_size + init_size + init_data_size];
2458         len = priv->ucode_boot.len;
2459         IWL_DEBUG_INFO(priv,
2460                 "Copying (but not loading) boot instr len %zd\n", len);
2461         memcpy(priv->ucode_boot.v_addr, src, len);
2462
2463         /* We have our copies now, allow OS release its copies */
2464         release_firmware(ucode_raw);
2465         return 0;
2466
2467  err_pci_alloc:
2468         IWL_ERR(priv, "failed to allocate pci memory\n");
2469         ret = -ENOMEM;
2470         iwl3945_dealloc_ucode_pci(priv);
2471
2472  err_release:
2473         release_firmware(ucode_raw);
2474
2475  error:
2476         return ret;
2477 }
2478
2479
2480 /**
2481  * iwl3945_set_ucode_ptrs - Set uCode address location
2482  *
2483  * Tell initialization uCode where to find runtime uCode.
2484  *
2485  * BSM registers initially contain pointers to initialization uCode.
2486  * We need to replace them to load runtime uCode inst and data,
2487  * and to save runtime data when powering down.
2488  */
2489 static int iwl3945_set_ucode_ptrs(struct iwl_priv *priv)
2490 {
2491         dma_addr_t pinst;
2492         dma_addr_t pdata;
2493         int rc = 0;
2494         unsigned long flags;
2495
2496         /* bits 31:0 for 3945 */
2497         pinst = priv->ucode_code.p_addr;
2498         pdata = priv->ucode_data_backup.p_addr;
2499
2500         spin_lock_irqsave(&priv->lock, flags);
2501         rc = iwl_grab_nic_access(priv);
2502         if (rc) {
2503                 spin_unlock_irqrestore(&priv->lock, flags);
2504                 return rc;
2505         }
2506
2507         /* Tell bootstrap uCode where to find image to load */
2508         iwl_write_prph(priv, BSM_DRAM_INST_PTR_REG, pinst);
2509         iwl_write_prph(priv, BSM_DRAM_DATA_PTR_REG, pdata);
2510         iwl_write_prph(priv, BSM_DRAM_DATA_BYTECOUNT_REG,
2511                                  priv->ucode_data.len);
2512
2513         /* Inst byte count must be last to set up, bit 31 signals uCode
2514          *   that all new ptr/size info is in place */
2515         iwl_write_prph(priv, BSM_DRAM_INST_BYTECOUNT_REG,
2516                                  priv->ucode_code.len | BSM_DRAM_INST_LOAD);
2517
2518         iwl_release_nic_access(priv);
2519
2520         spin_unlock_irqrestore(&priv->lock, flags);
2521
2522         IWL_DEBUG_INFO(priv, "Runtime uCode pointers are set.\n");
2523
2524         return rc;
2525 }
2526
2527 /**
2528  * iwl3945_init_alive_start - Called after REPLY_ALIVE notification received
2529  *
2530  * Called after REPLY_ALIVE notification received from "initialize" uCode.
2531  *
2532  * Tell "initialize" uCode to go ahead and load the runtime uCode.
2533  */
2534 static void iwl3945_init_alive_start(struct iwl_priv *priv)
2535 {
2536         /* Check alive response for "valid" sign from uCode */
2537         if (priv->card_alive_init.is_valid != UCODE_VALID_OK) {
2538                 /* We had an error bringing up the hardware, so take it
2539                  * all the way back down so we can try again */
2540                 IWL_DEBUG_INFO(priv, "Initialize Alive failed.\n");
2541                 goto restart;
2542         }
2543
2544         /* Bootstrap uCode has loaded initialize uCode ... verify inst image.
2545          * This is a paranoid check, because we would not have gotten the
2546          * "initialize" alive if code weren't properly loaded.  */
2547         if (iwl3945_verify_ucode(priv)) {
2548                 /* Runtime instruction load was bad;
2549                  * take it all the way back down so we can try again */
2550                 IWL_DEBUG_INFO(priv, "Bad \"initialize\" uCode load.\n");
2551                 goto restart;
2552         }
2553
2554         /* Send pointers to protocol/runtime uCode image ... init code will
2555          * load and launch runtime uCode, which will send us another "Alive"
2556          * notification. */
2557         IWL_DEBUG_INFO(priv, "Initialization Alive received.\n");
2558         if (iwl3945_set_ucode_ptrs(priv)) {
2559                 /* Runtime instruction load won't happen;
2560                  * take it all the way back down so we can try again */
2561                 IWL_DEBUG_INFO(priv, "Couldn't set up uCode pointers.\n");
2562                 goto restart;
2563         }
2564         return;
2565
2566  restart:
2567         queue_work(priv->workqueue, &priv->restart);
2568 }
2569
2570 /**
2571  * iwl3945_alive_start - called after REPLY_ALIVE notification received
2572  *                   from protocol/runtime uCode (initialization uCode's
2573  *                   Alive gets handled by iwl3945_init_alive_start()).
2574  */
2575 static void iwl3945_alive_start(struct iwl_priv *priv)
2576 {
2577         int rc = 0;
2578         int thermal_spin = 0;
2579         u32 rfkill;
2580
2581         IWL_DEBUG_INFO(priv, "Runtime Alive received.\n");
2582
2583         if (priv->card_alive.is_valid != UCODE_VALID_OK) {
2584                 /* We had an error bringing up the hardware, so take it
2585                  * all the way back down so we can try again */
2586                 IWL_DEBUG_INFO(priv, "Alive failed.\n");
2587                 goto restart;
2588         }
2589
2590         /* Initialize uCode has loaded Runtime uCode ... verify inst image.
2591          * This is a paranoid check, because we would not have gotten the
2592          * "runtime" alive if code weren't properly loaded.  */
2593         if (iwl3945_verify_ucode(priv)) {
2594                 /* Runtime instruction load was bad;
2595                  * take it all the way back down so we can try again */
2596                 IWL_DEBUG_INFO(priv, "Bad runtime uCode load.\n");
2597                 goto restart;
2598         }
2599
2600         priv->cfg->ops->smgmt->clear_station_table(priv);
2601
2602         rc = iwl_grab_nic_access(priv);
2603         if (rc) {
2604                 IWL_WARN(priv, "Can not read RFKILL status from adapter\n");
2605                 return;
2606         }
2607
2608         rfkill = iwl_read_prph(priv, APMG_RFKILL_REG);
2609         IWL_DEBUG_INFO(priv, "RFKILL status: 0x%x\n", rfkill);
2610         iwl_release_nic_access(priv);
2611
2612         if (rfkill & 0x1) {
2613                 clear_bit(STATUS_RF_KILL_HW, &priv->status);
2614                 /* if RFKILL is not on, then wait for thermal
2615                  * sensor in adapter to kick in */
2616                 while (iwl3945_hw_get_temperature(priv) == 0) {
2617                         thermal_spin++;
2618                         udelay(10);
2619                 }
2620
2621                 if (thermal_spin)
2622                         IWL_DEBUG_INFO(priv, "Thermal calibration took %dus\n",
2623                                        thermal_spin * 10);
2624         } else
2625                 set_bit(STATUS_RF_KILL_HW, &priv->status);
2626
2627         /* After the ALIVE response, we can send commands to 3945 uCode */
2628         set_bit(STATUS_ALIVE, &priv->status);
2629
2630         /* Clear out the uCode error bit if it is set */
2631         clear_bit(STATUS_FW_ERROR, &priv->status);
2632
2633         if (iwl_is_rfkill(priv))
2634                 return;
2635
2636         ieee80211_wake_queues(priv->hw);
2637
2638         priv->active_rate = priv->rates_mask;
2639         priv->active_rate_basic = priv->rates_mask & IWL_BASIC_RATES_MASK;
2640
2641         iwl_power_update_mode(priv, false);
2642
2643         if (iwl_is_associated(priv)) {
2644                 struct iwl3945_rxon_cmd *active_rxon =
2645                                 (struct iwl3945_rxon_cmd *)(&priv->active_rxon);
2646
2647                 memcpy(&priv->staging_rxon, &priv->active_rxon,
2648                        sizeof(priv->staging_rxon));
2649                 active_rxon->filter_flags &= ~RXON_FILTER_ASSOC_MSK;
2650         } else {
2651                 /* Initialize our rx_config data */
2652                 iwl_connection_init_rx_config(priv, priv->iw_mode);
2653         }
2654
2655         /* Configure Bluetooth device coexistence support */
2656         iwl_send_bt_config(priv);
2657
2658         /* Configure the adapter for unassociated operation */
2659         iwlcore_commit_rxon(priv);
2660
2661         iwl3945_reg_txpower_periodic(priv);
2662
2663         iwl3945_led_register(priv);
2664
2665         IWL_DEBUG_INFO(priv, "ALIVE processing complete.\n");
2666         set_bit(STATUS_READY, &priv->status);
2667         wake_up_interruptible(&priv->wait_command_queue);
2668
2669         if (priv->error_recovering)
2670                 iwl3945_error_recovery(priv);
2671
2672         /* reassociate for ADHOC mode */
2673         if (priv->vif && (priv->iw_mode == NL80211_IFTYPE_ADHOC)) {
2674                 struct sk_buff *beacon = ieee80211_beacon_get(priv->hw,
2675                                                                 priv->vif);
2676                 if (beacon)
2677                         iwl_mac_beacon_update(priv->hw, beacon);
2678         }
2679
2680         if (test_and_clear_bit(STATUS_MODE_PENDING, &priv->status))
2681                 iwl_set_mode(priv, priv->iw_mode);
2682
2683         return;
2684
2685  restart:
2686         queue_work(priv->workqueue, &priv->restart);
2687 }
2688
2689 static void iwl3945_cancel_deferred_work(struct iwl_priv *priv);
2690
2691 static void __iwl3945_down(struct iwl_priv *priv)
2692 {
2693         unsigned long flags;
2694         int exit_pending = test_bit(STATUS_EXIT_PENDING, &priv->status);
2695         struct ieee80211_conf *conf = NULL;
2696
2697         IWL_DEBUG_INFO(priv, DRV_NAME " is going down\n");
2698
2699         conf = ieee80211_get_hw_conf(priv->hw);
2700
2701         if (!exit_pending)
2702                 set_bit(STATUS_EXIT_PENDING, &priv->status);
2703
2704         iwl3945_led_unregister(priv);
2705         priv->cfg->ops->smgmt->clear_station_table(priv);
2706
2707         /* Unblock any waiting calls */
2708         wake_up_interruptible_all(&priv->wait_command_queue);
2709
2710         /* Wipe out the EXIT_PENDING status bit if we are not actually
2711          * exiting the module */
2712         if (!exit_pending)
2713                 clear_bit(STATUS_EXIT_PENDING, &priv->status);
2714
2715         /* stop and reset the on-board processor */
2716         iwl_write32(priv, CSR_RESET, CSR_RESET_REG_FLAG_NEVO_RESET);
2717
2718         /* tell the device to stop sending interrupts */
2719         spin_lock_irqsave(&priv->lock, flags);
2720         iwl_disable_interrupts(priv);
2721         spin_unlock_irqrestore(&priv->lock, flags);
2722         iwl_synchronize_irq(priv);
2723
2724         if (priv->mac80211_registered)
2725                 ieee80211_stop_queues(priv->hw);
2726
2727         /* If we have not previously called iwl3945_init() then
2728          * clear all bits but the RF Kill bits and return */
2729         if (!iwl_is_init(priv)) {
2730                 priv->status = test_bit(STATUS_RF_KILL_HW, &priv->status) <<
2731                                         STATUS_RF_KILL_HW |
2732                                test_bit(STATUS_RF_KILL_SW, &priv->status) <<
2733                                         STATUS_RF_KILL_SW |
2734                                test_bit(STATUS_GEO_CONFIGURED, &priv->status) <<
2735                                         STATUS_GEO_CONFIGURED |
2736                                 test_bit(STATUS_EXIT_PENDING, &priv->status) <<
2737                                         STATUS_EXIT_PENDING;
2738                 goto exit;
2739         }
2740
2741         /* ...otherwise clear out all the status bits but the RF Kill
2742          * bits and continue taking the NIC down. */
2743         priv->status &= test_bit(STATUS_RF_KILL_HW, &priv->status) <<
2744                                 STATUS_RF_KILL_HW |
2745                         test_bit(STATUS_RF_KILL_SW, &priv->status) <<
2746                                 STATUS_RF_KILL_SW |
2747                         test_bit(STATUS_GEO_CONFIGURED, &priv->status) <<
2748                                 STATUS_GEO_CONFIGURED |
2749                         test_bit(STATUS_FW_ERROR, &priv->status) <<
2750                                 STATUS_FW_ERROR |
2751                         test_bit(STATUS_EXIT_PENDING, &priv->status) <<
2752                                 STATUS_EXIT_PENDING;
2753
2754         priv->cfg->ops->lib->apm_ops.reset(priv);
2755         spin_lock_irqsave(&priv->lock, flags);
2756         iwl_clear_bit(priv, CSR_GP_CNTRL, CSR_GP_CNTRL_REG_FLAG_MAC_ACCESS_REQ);
2757         spin_unlock_irqrestore(&priv->lock, flags);
2758
2759         iwl3945_hw_txq_ctx_stop(priv);
2760         iwl3945_hw_rxq_stop(priv);
2761
2762         spin_lock_irqsave(&priv->lock, flags);
2763         if (!iwl_grab_nic_access(priv)) {
2764                 iwl_write_prph(priv, APMG_CLK_DIS_REG,
2765                                          APMG_CLK_VAL_DMA_CLK_RQT);
2766                 iwl_release_nic_access(priv);
2767         }
2768         spin_unlock_irqrestore(&priv->lock, flags);
2769
2770         udelay(5);
2771
2772         if (exit_pending)
2773                 priv->cfg->ops->lib->apm_ops.stop(priv);
2774         else
2775                 priv->cfg->ops->lib->apm_ops.reset(priv);
2776
2777  exit:
2778         memset(&priv->card_alive, 0, sizeof(struct iwl_alive_resp));
2779
2780         if (priv->ibss_beacon)
2781                 dev_kfree_skb(priv->ibss_beacon);
2782         priv->ibss_beacon = NULL;
2783
2784         /* clear out any free frames */
2785         iwl3945_clear_free_frames(priv);
2786 }
2787
2788 static void iwl3945_down(struct iwl_priv *priv)
2789 {
2790         mutex_lock(&priv->mutex);
2791         __iwl3945_down(priv);
2792         mutex_unlock(&priv->mutex);
2793
2794         iwl3945_cancel_deferred_work(priv);
2795 }
2796
2797 #define MAX_HW_RESTARTS 5
2798
2799 static int __iwl3945_up(struct iwl_priv *priv)
2800 {
2801         int rc, i;
2802
2803         if (test_bit(STATUS_EXIT_PENDING, &priv->status)) {
2804                 IWL_WARN(priv, "Exit pending; will not bring the NIC up\n");
2805                 return -EIO;
2806         }
2807
2808         if (test_bit(STATUS_RF_KILL_SW, &priv->status)) {
2809                 IWL_WARN(priv, "Radio disabled by SW RF kill (module "
2810                             "parameter)\n");
2811                 return -ENODEV;
2812         }
2813
2814         if (!priv->ucode_data_backup.v_addr || !priv->ucode_data.v_addr) {
2815                 IWL_ERR(priv, "ucode not available for device bring up\n");
2816                 return -EIO;
2817         }
2818
2819         /* If platform's RF_KILL switch is NOT set to KILL */
2820         if (iwl_read32(priv, CSR_GP_CNTRL) &
2821                                 CSR_GP_CNTRL_REG_FLAG_HW_RF_KILL_SW)
2822                 clear_bit(STATUS_RF_KILL_HW, &priv->status);
2823         else {
2824                 set_bit(STATUS_RF_KILL_HW, &priv->status);
2825                 IWL_WARN(priv, "Radio disabled by HW RF Kill switch\n");
2826                 return -ENODEV;
2827         }
2828
2829         iwl_write32(priv, CSR_INT, 0xFFFFFFFF);
2830
2831         rc = iwl3945_hw_nic_init(priv);
2832         if (rc) {
2833                 IWL_ERR(priv, "Unable to int nic\n");
2834                 return rc;
2835         }
2836
2837         /* make sure rfkill handshake bits are cleared */
2838         iwl_write32(priv, CSR_UCODE_DRV_GP1_CLR, CSR_UCODE_SW_BIT_RFKILL);
2839         iwl_write32(priv, CSR_UCODE_DRV_GP1_CLR,
2840                     CSR_UCODE_DRV_GP1_BIT_CMD_BLOCKED);
2841
2842         /* clear (again), then enable host interrupts */
2843         iwl_write32(priv, CSR_INT, 0xFFFFFFFF);
2844         iwl_enable_interrupts(priv);
2845
2846         /* really make sure rfkill handshake bits are cleared */
2847         iwl_write32(priv, CSR_UCODE_DRV_GP1_CLR, CSR_UCODE_SW_BIT_RFKILL);
2848         iwl_write32(priv, CSR_UCODE_DRV_GP1_CLR, CSR_UCODE_SW_BIT_RFKILL);
2849
2850         /* Copy original ucode data image from disk into backup cache.
2851          * This will be used to initialize the on-board processor's
2852          * data SRAM for a clean start when the runtime program first loads. */
2853         memcpy(priv->ucode_data_backup.v_addr, priv->ucode_data.v_addr,
2854                priv->ucode_data.len);
2855
2856         /* We return success when we resume from suspend and rf_kill is on. */
2857         if (test_bit(STATUS_RF_KILL_HW, &priv->status))
2858                 return 0;
2859
2860         for (i = 0; i < MAX_HW_RESTARTS; i++) {
2861
2862                 priv->cfg->ops->smgmt->clear_station_table(priv);
2863
2864                 /* load bootstrap state machine,
2865                  * load bootstrap program into processor's memory,
2866                  * prepare to load the "initialize" uCode */
2867                 priv->cfg->ops->lib->load_ucode(priv);
2868
2869                 if (rc) {
2870                         IWL_ERR(priv,
2871                                 "Unable to set up bootstrap uCode: %d\n", rc);
2872                         continue;
2873                 }
2874
2875                 /* start card; "initialize" will load runtime ucode */
2876                 iwl3945_nic_start(priv);
2877
2878                 IWL_DEBUG_INFO(priv, DRV_NAME " is coming up\n");
2879
2880                 return 0;
2881         }
2882
2883         set_bit(STATUS_EXIT_PENDING, &priv->status);
2884         __iwl3945_down(priv);
2885         clear_bit(STATUS_EXIT_PENDING, &priv->status);
2886
2887         /* tried to restart and config the device for as long as our
2888          * patience could withstand */
2889         IWL_ERR(priv, "Unable to initialize device after %d attempts.\n", i);
2890         return -EIO;
2891 }
2892
2893
2894 /*****************************************************************************
2895  *
2896  * Workqueue callbacks
2897  *
2898  *****************************************************************************/
2899
2900 static void iwl3945_bg_init_alive_start(struct work_struct *data)
2901 {
2902         struct iwl_priv *priv =
2903             container_of(data, struct iwl_priv, init_alive_start.work);
2904
2905         if (test_bit(STATUS_EXIT_PENDING, &priv->status))
2906                 return;
2907
2908         mutex_lock(&priv->mutex);
2909         iwl3945_init_alive_start(priv);
2910         mutex_unlock(&priv->mutex);
2911 }
2912
2913 static void iwl3945_bg_alive_start(struct work_struct *data)
2914 {
2915         struct iwl_priv *priv =
2916             container_of(data, struct iwl_priv, alive_start.work);
2917
2918         if (test_bit(STATUS_EXIT_PENDING, &priv->status))
2919                 return;
2920
2921         mutex_lock(&priv->mutex);
2922         iwl3945_alive_start(priv);
2923         mutex_unlock(&priv->mutex);
2924 }
2925
2926 static void iwl3945_rfkill_poll(struct work_struct *data)
2927 {
2928         struct iwl_priv *priv =
2929             container_of(data, struct iwl_priv, rfkill_poll.work);
2930         unsigned long status = priv->status;
2931
2932         if (iwl_read32(priv, CSR_GP_CNTRL) & CSR_GP_CNTRL_REG_FLAG_HW_RF_KILL_SW)
2933                 clear_bit(STATUS_RF_KILL_HW, &priv->status);
2934         else
2935                 set_bit(STATUS_RF_KILL_HW, &priv->status);
2936
2937         if (test_bit(STATUS_RF_KILL_HW, &status) != test_bit(STATUS_RF_KILL_HW, &priv->status))
2938                 queue_work(priv->workqueue, &priv->rf_kill);
2939
2940         queue_delayed_work(priv->workqueue, &priv->rfkill_poll,
2941                            round_jiffies_relative(2 * HZ));
2942
2943 }
2944
2945 #define IWL_SCAN_CHECK_WATCHDOG (7 * HZ)
2946 static void iwl3945_bg_request_scan(struct work_struct *data)
2947 {
2948         struct iwl_priv *priv =
2949             container_of(data, struct iwl_priv, request_scan);
2950         struct iwl_host_cmd cmd = {
2951                 .id = REPLY_SCAN_CMD,
2952                 .len = sizeof(struct iwl3945_scan_cmd),
2953                 .meta.flags = CMD_SIZE_HUGE,
2954         };
2955         int rc = 0;
2956         struct iwl3945_scan_cmd *scan;
2957         struct ieee80211_conf *conf = NULL;
2958         u8 n_probes = 0;
2959         enum ieee80211_band band;
2960         bool is_active = false;
2961
2962         conf = ieee80211_get_hw_conf(priv->hw);
2963
2964         mutex_lock(&priv->mutex);
2965
2966         if (!iwl_is_ready(priv)) {
2967                 IWL_WARN(priv, "request scan called when driver not ready.\n");
2968                 goto done;
2969         }
2970
2971         /* Make sure the scan wasn't canceled before this queued work
2972          * was given the chance to run... */
2973         if (!test_bit(STATUS_SCANNING, &priv->status))
2974                 goto done;
2975
2976         /* This should never be called or scheduled if there is currently
2977          * a scan active in the hardware. */
2978         if (test_bit(STATUS_SCAN_HW, &priv->status)) {
2979                 IWL_DEBUG_INFO(priv, "Multiple concurrent scan requests  "
2980                                 "Ignoring second request.\n");
2981                 rc = -EIO;
2982                 goto done;
2983         }
2984
2985         if (test_bit(STATUS_EXIT_PENDING, &priv->status)) {
2986                 IWL_DEBUG_SCAN(priv, "Aborting scan due to device shutdown\n");
2987                 goto done;
2988         }
2989
2990         if (test_bit(STATUS_SCAN_ABORTING, &priv->status)) {
2991                 IWL_DEBUG_HC(priv,
2992                         "Scan request while abort pending. Queuing.\n");
2993                 goto done;
2994         }
2995
2996         if (iwl_is_rfkill(priv)) {
2997                 IWL_DEBUG_HC(priv, "Aborting scan due to RF Kill activation\n");
2998                 goto done;
2999         }
3000
3001         if (!test_bit(STATUS_READY, &priv->status)) {
3002                 IWL_DEBUG_HC(priv,
3003                         "Scan request while uninitialized. Queuing.\n");
3004                 goto done;
3005         }
3006
3007         if (!priv->scan_bands) {
3008                 IWL_DEBUG_HC(priv, "Aborting scan due to no requested bands\n");
3009                 goto done;
3010         }
3011
3012         if (!priv->scan) {
3013                 priv->scan = kmalloc(sizeof(struct iwl3945_scan_cmd) +
3014                                      IWL_MAX_SCAN_SIZE, GFP_KERNEL);
3015                 if (!priv->scan) {
3016                         rc = -ENOMEM;
3017                         goto done;
3018                 }
3019         }
3020         scan = priv->scan;
3021         memset(scan, 0, sizeof(struct iwl3945_scan_cmd) + IWL_MAX_SCAN_SIZE);
3022
3023         scan->quiet_plcp_th = IWL_PLCP_QUIET_THRESH;
3024         scan->quiet_time = IWL_ACTIVE_QUIET_TIME;
3025
3026         if (iwl_is_associated(priv)) {
3027                 u16 interval = 0;
3028                 u32 extra;
3029                 u32 suspend_time = 100;
3030                 u32 scan_suspend_time = 100;
3031                 unsigned long flags;
3032
3033                 IWL_DEBUG_INFO(priv, "Scanning while associated...\n");
3034
3035                 spin_lock_irqsave(&priv->lock, flags);
3036                 interval = priv->beacon_int;
3037                 spin_unlock_irqrestore(&priv->lock, flags);
3038
3039                 scan->suspend_time = 0;
3040                 scan->max_out_time = cpu_to_le32(200 * 1024);
3041                 if (!interval)
3042                         interval = suspend_time;
3043                 /*
3044                  * suspend time format:
3045                  *  0-19: beacon interval in usec (time before exec.)
3046                  * 20-23: 0
3047                  * 24-31: number of beacons (suspend between channels)
3048                  */
3049
3050                 extra = (suspend_time / interval) << 24;
3051                 scan_suspend_time = 0xFF0FFFFF &
3052                     (extra | ((suspend_time % interval) * 1024));
3053
3054                 scan->suspend_time = cpu_to_le32(scan_suspend_time);
3055                 IWL_DEBUG_SCAN(priv, "suspend_time 0x%X beacon interval %d\n",
3056                                scan_suspend_time, interval);
3057         }
3058
3059         if (priv->scan_request->n_ssids) {
3060                 int i, p = 0;
3061                 IWL_DEBUG_SCAN(priv, "Kicking off active scan\n");
3062                 for (i = 0; i < priv->scan_request->n_ssids; i++) {
3063                         /* always does wildcard anyway */
3064                         if (!priv->scan_request->ssids[i].ssid_len)
3065                                 continue;
3066                         scan->direct_scan[p].id = WLAN_EID_SSID;
3067                         scan->direct_scan[p].len =
3068                                 priv->scan_request->ssids[i].ssid_len;
3069                         memcpy(scan->direct_scan[p].ssid,
3070                                priv->scan_request->ssids[i].ssid,
3071                                priv->scan_request->ssids[i].ssid_len);
3072                         n_probes++;
3073                         p++;
3074                 }
3075                 is_active = true;
3076         } else
3077                 IWL_DEBUG_SCAN(priv, "Kicking off passive scan.\n");
3078
3079         /* We don't build a direct scan probe request; the uCode will do
3080          * that based on the direct_mask added to each channel entry */
3081         scan->tx_cmd.tx_flags = TX_CMD_FLG_SEQ_CTL_MSK;
3082         scan->tx_cmd.sta_id = priv->hw_params.bcast_sta_id;
3083         scan->tx_cmd.stop_time.life_time = TX_CMD_LIFE_TIME_INFINITE;
3084
3085         /* flags + rate selection */
3086
3087         if (priv->scan_bands & BIT(IEEE80211_BAND_2GHZ)) {
3088                 scan->flags = RXON_FLG_BAND_24G_MSK | RXON_FLG_AUTO_DETECT_MSK;
3089                 scan->tx_cmd.rate = IWL_RATE_1M_PLCP;
3090                 scan->good_CRC_th = 0;
3091                 band = IEEE80211_BAND_2GHZ;
3092         } else if (priv->scan_bands & BIT(IEEE80211_BAND_5GHZ)) {
3093                 scan->tx_cmd.rate = IWL_RATE_6M_PLCP;
3094                 /*
3095                  * If active scaning is requested but a certain channel
3096                  * is marked passive, we can do active scanning if we
3097                  * detect transmissions.
3098                  */
3099                 scan->good_CRC_th = is_active ? IWL_GOOD_CRC_TH : 0;
3100                 band = IEEE80211_BAND_5GHZ;
3101         } else {
3102                 IWL_WARN(priv, "Invalid scan band count\n");
3103                 goto done;
3104         }
3105
3106         scan->tx_cmd.len = cpu_to_le16(
3107                         iwl_fill_probe_req(priv,
3108                                 (struct ieee80211_mgmt *)scan->data,
3109                                 priv->scan_request->ie,
3110                                 priv->scan_request->ie_len,
3111                                 IWL_MAX_SCAN_SIZE - sizeof(*scan)));
3112
3113         /* select Rx antennas */
3114         scan->flags |= iwl3945_get_antenna_flags(priv);
3115
3116         if (priv->iw_mode == NL80211_IFTYPE_MONITOR)
3117                 scan->filter_flags = RXON_FILTER_PROMISC_MSK;
3118
3119         scan->channel_count =
3120                 iwl3945_get_channels_for_scan(priv, band, is_active, n_probes,
3121                         (void *)&scan->data[le16_to_cpu(scan->tx_cmd.len)]);
3122
3123         if (scan->channel_count == 0) {
3124                 IWL_DEBUG_SCAN(priv, "channel count %d\n", scan->channel_count);
3125                 goto done;
3126         }
3127
3128         cmd.len += le16_to_cpu(scan->tx_cmd.len) +
3129             scan->channel_count * sizeof(struct iwl3945_scan_channel);
3130         cmd.data = scan;
3131         scan->len = cpu_to_le16(cmd.len);
3132
3133         set_bit(STATUS_SCAN_HW, &priv->status);
3134         rc = iwl_send_cmd_sync(priv, &cmd);
3135         if (rc)
3136                 goto done;
3137
3138         queue_delayed_work(priv->workqueue, &priv->scan_check,
3139                            IWL_SCAN_CHECK_WATCHDOG);
3140
3141         mutex_unlock(&priv->mutex);
3142         return;
3143
3144  done:
3145         /* can not perform scan make sure we clear scanning
3146          * bits from status so next scan request can be performed.
3147          * if we dont clear scanning status bit here all next scan
3148          * will fail
3149         */
3150         clear_bit(STATUS_SCAN_HW, &priv->status);
3151         clear_bit(STATUS_SCANNING, &priv->status);
3152
3153         /* inform mac80211 scan aborted */
3154         queue_work(priv->workqueue, &priv->scan_completed);
3155         mutex_unlock(&priv->mutex);
3156 }
3157
3158 static void iwl3945_bg_up(struct work_struct *data)
3159 {
3160         struct iwl_priv *priv = container_of(data, struct iwl_priv, up);
3161
3162         if (test_bit(STATUS_EXIT_PENDING, &priv->status))
3163                 return;
3164
3165         mutex_lock(&priv->mutex);
3166         __iwl3945_up(priv);
3167         mutex_unlock(&priv->mutex);
3168         iwl_rfkill_set_hw_state(priv);
3169 }
3170
3171 static void iwl3945_bg_restart(struct work_struct *data)
3172 {
3173         struct iwl_priv *priv = container_of(data, struct iwl_priv, restart);
3174
3175         if (test_bit(STATUS_EXIT_PENDING, &priv->status))
3176                 return;
3177
3178         iwl3945_down(priv);
3179         queue_work(priv->workqueue, &priv->up);
3180 }
3181
3182 static void iwl3945_bg_rx_replenish(struct work_struct *data)
3183 {
3184         struct iwl_priv *priv =
3185             container_of(data, struct iwl_priv, rx_replenish);
3186
3187         if (test_bit(STATUS_EXIT_PENDING, &priv->status))
3188                 return;
3189
3190         mutex_lock(&priv->mutex);
3191         iwl3945_rx_replenish(priv);
3192         mutex_unlock(&priv->mutex);
3193 }
3194
3195 #define IWL_DELAY_NEXT_SCAN (HZ*2)
3196
3197 void iwl3945_post_associate(struct iwl_priv *priv)
3198 {
3199         int rc = 0;
3200         struct ieee80211_conf *conf = NULL;
3201
3202         if (priv->iw_mode == NL80211_IFTYPE_AP) {
3203                 IWL_ERR(priv, "%s Should not be called in AP mode\n", __func__);
3204                 return;
3205         }
3206
3207
3208         IWL_DEBUG_ASSOC(priv, "Associated as %d to: %pM\n",
3209                         priv->assoc_id, priv->active_rxon.bssid_addr);
3210
3211         if (test_bit(STATUS_EXIT_PENDING, &priv->status))
3212                 return;
3213
3214         if (!priv->vif || !priv->is_open)
3215                 return;
3216
3217         iwl_scan_cancel_timeout(priv, 200);
3218
3219         conf = ieee80211_get_hw_conf(priv->hw);
3220
3221         priv->staging_rxon.filter_flags &= ~RXON_FILTER_ASSOC_MSK;
3222         iwlcore_commit_rxon(priv);
3223
3224         memset(&priv->rxon_timing, 0, sizeof(struct iwl_rxon_time_cmd));
3225         iwl3945_setup_rxon_timing(priv);
3226         rc = iwl_send_cmd_pdu(priv, REPLY_RXON_TIMING,
3227                               sizeof(priv->rxon_timing), &priv->rxon_timing);
3228         if (rc)
3229                 IWL_WARN(priv, "REPLY_RXON_TIMING failed - "
3230                             "Attempting to continue.\n");
3231
3232         priv->staging_rxon.filter_flags |= RXON_FILTER_ASSOC_MSK;
3233
3234         priv->staging_rxon.assoc_id = cpu_to_le16(priv->assoc_id);
3235
3236         IWL_DEBUG_ASSOC(priv, "assoc id %d beacon interval %d\n",
3237                         priv->assoc_id, priv->beacon_int);
3238
3239         if (priv->assoc_capability & WLAN_CAPABILITY_SHORT_PREAMBLE)
3240                 priv->staging_rxon.flags |= RXON_FLG_SHORT_PREAMBLE_MSK;
3241         else
3242                 priv->staging_rxon.flags &= ~RXON_FLG_SHORT_PREAMBLE_MSK;
3243
3244         if (priv->staging_rxon.flags & RXON_FLG_BAND_24G_MSK) {
3245                 if (priv->assoc_capability & WLAN_CAPABILITY_SHORT_SLOT_TIME)
3246                         priv->staging_rxon.flags |= RXON_FLG_SHORT_SLOT_MSK;
3247                 else
3248                         priv->staging_rxon.flags &= ~RXON_FLG_SHORT_SLOT_MSK;
3249
3250                 if (priv->iw_mode == NL80211_IFTYPE_ADHOC)
3251                         priv->staging_rxon.flags &= ~RXON_FLG_SHORT_SLOT_MSK;
3252
3253         }
3254
3255         iwlcore_commit_rxon(priv);
3256
3257         switch (priv->iw_mode) {
3258         case NL80211_IFTYPE_STATION:
3259                 iwl3945_rate_scale_init(priv->hw, IWL_AP_ID);
3260                 break;
3261
3262         case NL80211_IFTYPE_ADHOC:
3263
3264                 priv->assoc_id = 1;
3265                 priv->cfg->ops->smgmt->add_station(priv, priv->bssid, 0, 0, NULL);
3266                 iwl3945_sync_sta(priv, IWL_STA_ID,
3267                                  (priv->band == IEEE80211_BAND_5GHZ) ?
3268                                  IWL_RATE_6M_PLCP : IWL_RATE_1M_PLCP,
3269                                  CMD_ASYNC);
3270                 iwl3945_rate_scale_init(priv->hw, IWL_STA_ID);
3271                 iwl3945_send_beacon_cmd(priv);
3272
3273                 break;
3274
3275         default:
3276                  IWL_ERR(priv, "%s Should not be called in %d mode\n",
3277                            __func__, priv->iw_mode);
3278                 break;
3279         }
3280
3281         iwl_activate_qos(priv, 0);
3282
3283         /* we have just associated, don't start scan too early */
3284         priv->next_scan_jiffies = jiffies + IWL_DELAY_NEXT_SCAN;
3285 }
3286
3287 /*****************************************************************************
3288  *
3289  * mac80211 entry point functions
3290  *
3291  *****************************************************************************/
3292
3293 #define UCODE_READY_TIMEOUT     (2 * HZ)
3294
3295 static int iwl3945_mac_start(struct ieee80211_hw *hw)
3296 {
3297         struct iwl_priv *priv = hw->priv;
3298         int ret;
3299
3300         IWL_DEBUG_MAC80211(priv, "enter\n");
3301
3302         /* we should be verifying the device is ready to be opened */
3303         mutex_lock(&priv->mutex);
3304
3305         memset(&priv->staging_rxon, 0, sizeof(priv->staging_rxon));
3306         /* fetch ucode file from disk, alloc and copy to bus-master buffers ...
3307          * ucode filename and max sizes are card-specific. */
3308
3309         if (!priv->ucode_code.len) {
3310                 ret = iwl3945_read_ucode(priv);
3311                 if (ret) {
3312                         IWL_ERR(priv, "Could not read microcode: %d\n", ret);
3313                         mutex_unlock(&priv->mutex);
3314                         goto out_release_irq;
3315                 }
3316         }
3317
3318         ret = __iwl3945_up(priv);
3319
3320         mutex_unlock(&priv->mutex);
3321
3322         iwl_rfkill_set_hw_state(priv);
3323
3324         if (ret)
3325                 goto out_release_irq;
3326
3327         IWL_DEBUG_INFO(priv, "Start UP work.\n");
3328
3329         /* Wait for START_ALIVE from ucode. Otherwise callbacks from
3330          * mac80211 will not be run successfully. */
3331         ret = wait_event_interruptible_timeout(priv->wait_command_queue,
3332                         test_bit(STATUS_READY, &priv->status),
3333                         UCODE_READY_TIMEOUT);
3334         if (!ret) {
3335                 if (!test_bit(STATUS_READY, &priv->status)) {
3336                         IWL_ERR(priv,
3337                                 "Wait for START_ALIVE timeout after %dms.\n",
3338                                 jiffies_to_msecs(UCODE_READY_TIMEOUT));
3339                         ret = -ETIMEDOUT;
3340                         goto out_release_irq;
3341                 }
3342         }
3343
3344         /* ucode is running and will send rfkill notifications,
3345          * no need to poll the killswitch state anymore */
3346         cancel_delayed_work(&priv->rfkill_poll);
3347
3348         priv->is_open = 1;
3349         IWL_DEBUG_MAC80211(priv, "leave\n");
3350         return 0;
3351
3352 out_release_irq:
3353         priv->is_open = 0;
3354         IWL_DEBUG_MAC80211(priv, "leave - failed\n");
3355         return ret;
3356 }
3357
3358 static void iwl3945_mac_stop(struct ieee80211_hw *hw)
3359 {
3360         struct iwl_priv *priv = hw->priv;
3361
3362         IWL_DEBUG_MAC80211(priv, "enter\n");
3363
3364         if (!priv->is_open) {
3365                 IWL_DEBUG_MAC80211(priv, "leave - skip\n");
3366                 return;
3367         }
3368
3369         priv->is_open = 0;
3370
3371         if (iwl_is_ready_rf(priv)) {
3372                 /* stop mac, cancel any scan request and clear
3373                  * RXON_FILTER_ASSOC_MSK BIT
3374                  */
3375                 mutex_lock(&priv->mutex);
3376                 iwl_scan_cancel_timeout(priv, 100);
3377                 mutex_unlock(&priv->mutex);
3378         }
3379
3380         iwl3945_down(priv);
3381
3382         flush_workqueue(priv->workqueue);
3383
3384         /* start polling the killswitch state again */
3385         queue_delayed_work(priv->workqueue, &priv->rfkill_poll,
3386                            round_jiffies_relative(2 * HZ));
3387
3388         IWL_DEBUG_MAC80211(priv, "leave\n");
3389 }
3390
3391 static int iwl3945_mac_tx(struct ieee80211_hw *hw, struct sk_buff *skb)
3392 {
3393         struct iwl_priv *priv = hw->priv;
3394
3395         IWL_DEBUG_MAC80211(priv, "enter\n");
3396
3397         IWL_DEBUG_TX(priv, "dev->xmit(%d bytes) at rate 0x%02x\n", skb->len,
3398                      ieee80211_get_tx_rate(hw, IEEE80211_SKB_CB(skb))->bitrate);
3399
3400         if (iwl3945_tx_skb(priv, skb))
3401                 dev_kfree_skb_any(skb);
3402
3403         IWL_DEBUG_MAC80211(priv, "leave\n");
3404         return NETDEV_TX_OK;
3405 }
3406
3407 void iwl3945_config_ap(struct iwl_priv *priv)
3408 {
3409         int rc = 0;
3410
3411         if (test_bit(STATUS_EXIT_PENDING, &priv->status))
3412                 return;
3413
3414         /* The following should be done only at AP bring up */
3415         if (!(iwl_is_associated(priv))) {
3416
3417                 /* RXON - unassoc (to set timing command) */
3418                 priv->staging_rxon.filter_flags &= ~RXON_FILTER_ASSOC_MSK;
3419                 iwlcore_commit_rxon(priv);
3420
3421                 /* RXON Timing */
3422                 memset(&priv->rxon_timing, 0, sizeof(struct iwl_rxon_time_cmd));
3423                 iwl3945_setup_rxon_timing(priv);
3424                 rc = iwl_send_cmd_pdu(priv, REPLY_RXON_TIMING,
3425                                       sizeof(priv->rxon_timing),
3426                                       &priv->rxon_timing);
3427                 if (rc)
3428                         IWL_WARN(priv, "REPLY_RXON_TIMING failed - "
3429                                         "Attempting to continue.\n");
3430
3431                 /* FIXME: what should be the assoc_id for AP? */
3432                 priv->staging_rxon.assoc_id = cpu_to_le16(priv->assoc_id);
3433                 if (priv->assoc_capability & WLAN_CAPABILITY_SHORT_PREAMBLE)
3434                         priv->staging_rxon.flags |=
3435                                 RXON_FLG_SHORT_PREAMBLE_MSK;
3436                 else
3437                         priv->staging_rxon.flags &=
3438                                 ~RXON_FLG_SHORT_PREAMBLE_MSK;
3439
3440                 if (priv->staging_rxon.flags & RXON_FLG_BAND_24G_MSK) {
3441                         if (priv->assoc_capability &
3442                                 WLAN_CAPABILITY_SHORT_SLOT_TIME)
3443                                 priv->staging_rxon.flags |=
3444                                         RXON_FLG_SHORT_SLOT_MSK;
3445                         else
3446                                 priv->staging_rxon.flags &=
3447                                         ~RXON_FLG_SHORT_SLOT_MSK;
3448
3449                         if (priv->iw_mode == NL80211_IFTYPE_ADHOC)
3450                                 priv->staging_rxon.flags &=
3451                                         ~RXON_FLG_SHORT_SLOT_MSK;
3452                 }
3453                 /* restore RXON assoc */
3454                 priv->staging_rxon.filter_flags |= RXON_FILTER_ASSOC_MSK;
3455                 iwlcore_commit_rxon(priv);
3456                 priv->cfg->ops->smgmt->add_station(priv, iwl_bcast_addr, 0, 0, NULL);
3457         }
3458         iwl3945_send_beacon_cmd(priv);
3459
3460         /* FIXME - we need to add code here to detect a totally new
3461          * configuration, reset the AP, unassoc, rxon timing, assoc,
3462          * clear sta table, add BCAST sta... */
3463 }
3464
3465 static int iwl3945_mac_set_key(struct ieee80211_hw *hw, enum set_key_cmd cmd,
3466                                struct ieee80211_vif *vif,
3467                                struct ieee80211_sta *sta,
3468                                struct ieee80211_key_conf *key)
3469 {
3470         struct iwl_priv *priv = hw->priv;
3471         const u8 *addr;
3472         int ret = 0;
3473         u8 sta_id = IWL_INVALID_STATION;
3474         u8 static_key;
3475
3476         IWL_DEBUG_MAC80211(priv, "enter\n");
3477
3478         if (iwl3945_mod_params.sw_crypto) {
3479                 IWL_DEBUG_MAC80211(priv, "leave - hwcrypto disabled\n");
3480                 return -EOPNOTSUPP;
3481         }
3482
3483         addr = sta ? sta->addr : iwl_bcast_addr;
3484         static_key = !iwl_is_associated(priv);
3485
3486         if (!static_key) {
3487                 sta_id = priv->cfg->ops->smgmt->find_station(priv, addr);
3488                 if (sta_id == IWL_INVALID_STATION) {
3489                         IWL_DEBUG_MAC80211(priv, "leave - %pM not in station map.\n",
3490                                             addr);
3491                         return -EINVAL;
3492                 }
3493         }
3494
3495         mutex_lock(&priv->mutex);
3496         iwl_scan_cancel_timeout(priv, 100);
3497         mutex_unlock(&priv->mutex);
3498
3499         switch (cmd) {
3500         case SET_KEY:
3501                 if (static_key)
3502                         ret = iwl3945_set_static_key(priv, key);
3503                 else
3504                         ret = iwl3945_set_dynamic_key(priv, key, sta_id);
3505                 IWL_DEBUG_MAC80211(priv, "enable hwcrypto key\n");
3506                 break;
3507         case DISABLE_KEY:
3508                 if (static_key)
3509                         ret = iwl3945_remove_static_key(priv);
3510                 else
3511                         ret = iwl3945_clear_sta_key_info(priv, sta_id);
3512                 IWL_DEBUG_MAC80211(priv, "disable hwcrypto key\n");
3513                 break;
3514         default:
3515                 ret = -EINVAL;
3516         }
3517
3518         IWL_DEBUG_MAC80211(priv, "leave\n");
3519
3520         return ret;
3521 }
3522
3523 /*****************************************************************************
3524  *
3525  * sysfs attributes
3526  *
3527  *****************************************************************************/
3528
3529 #ifdef CONFIG_IWLWIFI_DEBUG
3530
3531 /*
3532  * The following adds a new attribute to the sysfs representation
3533  * of this device driver (i.e. a new file in /sys/bus/pci/drivers/iwl/)
3534  * used for controlling the debug level.
3535  *
3536  * See the level definitions in iwl for details.
3537  */
3538 static ssize_t show_debug_level(struct device *d,
3539                                 struct device_attribute *attr, char *buf)
3540 {
3541         struct iwl_priv *priv = d->driver_data;
3542
3543         return sprintf(buf, "0x%08X\n", priv->debug_level);
3544 }
3545 static ssize_t store_debug_level(struct device *d,
3546                                 struct device_attribute *attr,
3547                                  const char *buf, size_t count)
3548 {
3549         struct iwl_priv *priv = d->driver_data;
3550         unsigned long val;
3551         int ret;
3552
3553         ret = strict_strtoul(buf, 0, &val);
3554         if (ret)
3555                 IWL_INFO(priv, "%s is not in hex or decimal form.\n", buf);
3556         else
3557                 priv->debug_level = val;
3558
3559         return strnlen(buf, count);
3560 }
3561
3562 static DEVICE_ATTR(debug_level, S_IWUSR | S_IRUGO,
3563                         show_debug_level, store_debug_level);
3564
3565 #endif /* CONFIG_IWLWIFI_DEBUG */
3566
3567 static ssize_t show_temperature(struct device *d,
3568                                 struct device_attribute *attr, char *buf)
3569 {
3570         struct iwl_priv *priv = (struct iwl_priv *)d->driver_data;
3571
3572         if (!iwl_is_alive(priv))
3573                 return -EAGAIN;
3574
3575         return sprintf(buf, "%d\n", iwl3945_hw_get_temperature(priv));
3576 }
3577
3578 static DEVICE_ATTR(temperature, S_IRUGO, show_temperature, NULL);
3579
3580 static ssize_t show_tx_power(struct device *d,
3581                              struct device_attribute *attr, char *buf)
3582 {
3583         struct iwl_priv *priv = (struct iwl_priv *)d->driver_data;
3584         return sprintf(buf, "%d\n", priv->tx_power_user_lmt);
3585 }
3586
3587 static ssize_t store_tx_power(struct device *d,
3588                               struct device_attribute *attr,
3589                               const char *buf, size_t count)
3590 {
3591         struct iwl_priv *priv = (struct iwl_priv *)d->driver_data;
3592         char *p = (char *)buf;
3593         u32 val;
3594
3595         val = simple_strtoul(p, &p, 10);
3596         if (p == buf)
3597                 IWL_INFO(priv, ": %s is not in decimal form.\n", buf);
3598         else
3599                 iwl3945_hw_reg_set_txpower(priv, val);
3600
3601         return count;
3602 }
3603
3604 static DEVICE_ATTR(tx_power, S_IWUSR | S_IRUGO, show_tx_power, store_tx_power);
3605
3606 static ssize_t show_flags(struct device *d,
3607                           struct device_attribute *attr, char *buf)
3608 {
3609         struct iwl_priv *priv = (struct iwl_priv *)d->driver_data;
3610
3611         return sprintf(buf, "0x%04X\n", priv->active_rxon.flags);
3612 }
3613
3614 static ssize_t store_flags(struct device *d,
3615                            struct device_attribute *attr,
3616                            const char *buf, size_t count)
3617 {
3618         struct iwl_priv *priv = (struct iwl_priv *)d->driver_data;
3619         u32 flags = simple_strtoul(buf, NULL, 0);
3620
3621         mutex_lock(&priv->mutex);
3622         if (le32_to_cpu(priv->staging_rxon.flags) != flags) {
3623                 /* Cancel any currently running scans... */
3624                 if (iwl_scan_cancel_timeout(priv, 100))
3625                         IWL_WARN(priv, "Could not cancel scan.\n");
3626                 else {
3627                         IWL_DEBUG_INFO(priv, "Committing rxon.flags = 0x%04X\n",
3628                                        flags);
3629                         priv->staging_rxon.flags = cpu_to_le32(flags);
3630                         iwlcore_commit_rxon(priv);
3631                 }
3632         }
3633         mutex_unlock(&priv->mutex);
3634
3635         return count;
3636 }
3637
3638 static DEVICE_ATTR(flags, S_IWUSR | S_IRUGO, show_flags, store_flags);
3639
3640 static ssize_t show_filter_flags(struct device *d,
3641                                  struct device_attribute *attr, char *buf)
3642 {
3643         struct iwl_priv *priv = (struct iwl_priv *)d->driver_data;
3644
3645         return sprintf(buf, "0x%04X\n",
3646                 le32_to_cpu(priv->active_rxon.filter_flags));
3647 }
3648
3649 static ssize_t store_filter_flags(struct device *d,
3650                                   struct device_attribute *attr,
3651                                   const char *buf, size_t count)
3652 {
3653         struct iwl_priv *priv = (struct iwl_priv *)d->driver_data;
3654         u32 filter_flags = simple_strtoul(buf, NULL, 0);
3655
3656         mutex_lock(&priv->mutex);
3657         if (le32_to_cpu(priv->staging_rxon.filter_flags) != filter_flags) {
3658                 /* Cancel any currently running scans... */
3659                 if (iwl_scan_cancel_timeout(priv, 100))
3660                         IWL_WARN(priv, "Could not cancel scan.\n");
3661                 else {
3662                         IWL_DEBUG_INFO(priv, "Committing rxon.filter_flags = "
3663                                        "0x%04X\n", filter_flags);
3664                         priv->staging_rxon.filter_flags =
3665                                 cpu_to_le32(filter_flags);
3666                         iwlcore_commit_rxon(priv);
3667                 }
3668         }
3669         mutex_unlock(&priv->mutex);
3670
3671         return count;
3672 }
3673
3674 static DEVICE_ATTR(filter_flags, S_IWUSR | S_IRUGO, show_filter_flags,
3675                    store_filter_flags);
3676
3677 #ifdef CONFIG_IWL3945_SPECTRUM_MEASUREMENT
3678
3679 static ssize_t show_measurement(struct device *d,
3680                                 struct device_attribute *attr, char *buf)
3681 {
3682         struct iwl_priv *priv = dev_get_drvdata(d);
3683         struct iwl_spectrum_notification measure_report;
3684         u32 size = sizeof(measure_report), len = 0, ofs = 0;
3685         u8 *data = (u8 *)&measure_report;
3686         unsigned long flags;
3687
3688         spin_lock_irqsave(&priv->lock, flags);
3689         if (!(priv->measurement_status & MEASUREMENT_READY)) {
3690                 spin_unlock_irqrestore(&priv->lock, flags);
3691                 return 0;
3692         }
3693         memcpy(&measure_report, &priv->measure_report, size);
3694         priv->measurement_status = 0;
3695         spin_unlock_irqrestore(&priv->lock, flags);
3696
3697         while (size && (PAGE_SIZE - len)) {
3698                 hex_dump_to_buffer(data + ofs, size, 16, 1, buf + len,
3699                                    PAGE_SIZE - len, 1);
3700                 len = strlen(buf);
3701                 if (PAGE_SIZE - len)
3702                         buf[len++] = '\n';
3703
3704                 ofs += 16;
3705                 size -= min(size, 16U);
3706         }
3707
3708         return len;
3709 }
3710
3711 static ssize_t store_measurement(struct device *d,
3712                                  struct device_attribute *attr,
3713                                  const char *buf, size_t count)
3714 {
3715         struct iwl_priv *priv = dev_get_drvdata(d);
3716         struct ieee80211_measurement_params params = {
3717                 .channel = le16_to_cpu(priv->active_rxon.channel),
3718                 .start_time = cpu_to_le64(priv->last_tsf),
3719                 .duration = cpu_to_le16(1),
3720         };
3721         u8 type = IWL_MEASURE_BASIC;
3722         u8 buffer[32];
3723         u8 channel;
3724
3725         if (count) {
3726                 char *p = buffer;
3727                 strncpy(buffer, buf, min(sizeof(buffer), count));
3728                 channel = simple_strtoul(p, NULL, 0);
3729                 if (channel)
3730                         params.channel = channel;
3731
3732                 p = buffer;
3733                 while (*p && *p != ' ')
3734                         p++;
3735                 if (*p)
3736                         type = simple_strtoul(p + 1, NULL, 0);
3737         }
3738
3739         IWL_DEBUG_INFO(priv, "Invoking measurement of type %d on "
3740                        "channel %d (for '%s')\n", type, params.channel, buf);
3741         iwl3945_get_measurement(priv, &params, type);
3742
3743         return count;
3744 }
3745
3746 static DEVICE_ATTR(measurement, S_IRUSR | S_IWUSR,
3747                    show_measurement, store_measurement);
3748 #endif /* CONFIG_IWL3945_SPECTRUM_MEASUREMENT */
3749
3750 static ssize_t store_retry_rate(struct device *d,
3751                                 struct device_attribute *attr,
3752                                 const char *buf, size_t count)
3753 {
3754         struct iwl_priv *priv = dev_get_drvdata(d);
3755
3756         priv->retry_rate = simple_strtoul(buf, NULL, 0);
3757         if (priv->retry_rate <= 0)
3758                 priv->retry_rate = 1;
3759
3760         return count;
3761 }
3762
3763 static ssize_t show_retry_rate(struct device *d,
3764                                struct device_attribute *attr, char *buf)
3765 {
3766         struct iwl_priv *priv = dev_get_drvdata(d);
3767         return sprintf(buf, "%d", priv->retry_rate);
3768 }
3769
3770 static DEVICE_ATTR(retry_rate, S_IWUSR | S_IRUSR, show_retry_rate,
3771                    store_retry_rate);
3772
3773
3774 static ssize_t store_power_level(struct device *d,
3775                                  struct device_attribute *attr,
3776                                  const char *buf, size_t count)
3777 {
3778         struct iwl_priv *priv = dev_get_drvdata(d);
3779         int ret;
3780         unsigned long mode;
3781
3782
3783         mutex_lock(&priv->mutex);
3784
3785         ret = strict_strtoul(buf, 10, &mode);
3786         if (ret)
3787                 goto out;
3788
3789         ret = iwl_power_set_user_mode(priv, mode);
3790         if (ret) {
3791                 IWL_DEBUG_MAC80211(priv, "failed setting power mode.\n");
3792                 goto out;
3793         }
3794         ret = count;
3795
3796  out:
3797         mutex_unlock(&priv->mutex);
3798         return ret;
3799 }
3800
3801 static ssize_t show_power_level(struct device *d,
3802                                 struct device_attribute *attr, char *buf)
3803 {
3804         struct iwl_priv *priv = dev_get_drvdata(d);
3805         int mode = priv->power_data.user_power_setting;
3806         int system = priv->power_data.system_power_setting;
3807         int level = priv->power_data.power_mode;
3808         char *p = buf;
3809
3810         switch (system) {
3811         case IWL_POWER_SYS_AUTO:
3812                 p += sprintf(p, "SYSTEM:auto");
3813                 break;
3814         case IWL_POWER_SYS_AC:
3815                 p += sprintf(p, "SYSTEM:ac");
3816                 break;
3817         case IWL_POWER_SYS_BATTERY:
3818                 p += sprintf(p, "SYSTEM:battery");
3819                 break;
3820         }
3821
3822         p += sprintf(p, "\tMODE:%s", (mode < IWL_POWER_AUTO) ?
3823                         "fixed" : "auto");
3824         p += sprintf(p, "\tINDEX:%d", level);
3825         p += sprintf(p, "\n");
3826         return p - buf + 1;
3827 }
3828
3829 static DEVICE_ATTR(power_level, S_IWUSR | S_IRUSR,
3830                    show_power_level, store_power_level);
3831
3832 #define MAX_WX_STRING 80
3833
3834 /* Values are in microsecond */
3835 static const s32 timeout_duration[] = {
3836         350000,
3837         250000,
3838         75000,
3839         37000,
3840         25000,
3841 };
3842 static const s32 period_duration[] = {
3843         400000,
3844         700000,
3845         1000000,
3846         1000000,
3847         1000000
3848 };
3849
3850 static ssize_t show_channels(struct device *d,
3851                              struct device_attribute *attr, char *buf)
3852 {
3853         /* all this shit doesn't belong into sysfs anyway */
3854         return 0;
3855 }
3856
3857 static DEVICE_ATTR(channels, S_IRUSR, show_channels, NULL);
3858
3859 static ssize_t show_statistics(struct device *d,
3860                                struct device_attribute *attr, char *buf)
3861 {
3862         struct iwl_priv *priv = dev_get_drvdata(d);
3863         u32 size = sizeof(struct iwl3945_notif_statistics);
3864         u32 len = 0, ofs = 0;
3865         u8 *data = (u8 *)&priv->statistics_39;
3866         int rc = 0;
3867
3868         if (!iwl_is_alive(priv))
3869                 return -EAGAIN;
3870
3871         mutex_lock(&priv->mutex);
3872         rc = iwl_send_statistics_request(priv, 0);
3873         mutex_unlock(&priv->mutex);
3874
3875         if (rc) {
3876                 len = sprintf(buf,
3877                               "Error sending statistics request: 0x%08X\n", rc);
3878                 return len;
3879         }
3880
3881         while (size && (PAGE_SIZE - len)) {
3882                 hex_dump_to_buffer(data + ofs, size, 16, 1, buf + len,
3883                                    PAGE_SIZE - len, 1);
3884                 len = strlen(buf);
3885                 if (PAGE_SIZE - len)
3886                         buf[len++] = '\n';
3887
3888                 ofs += 16;
3889                 size -= min(size, 16U);
3890         }
3891
3892         return len;
3893 }
3894
3895 static DEVICE_ATTR(statistics, S_IRUGO, show_statistics, NULL);
3896
3897 static ssize_t show_antenna(struct device *d,
3898                             struct device_attribute *attr, char *buf)
3899 {
3900         struct iwl_priv *priv = dev_get_drvdata(d);
3901
3902         if (!iwl_is_alive(priv))
3903                 return -EAGAIN;
3904
3905         return sprintf(buf, "%d\n", iwl3945_mod_params.antenna);
3906 }
3907
3908 static ssize_t store_antenna(struct device *d,
3909                              struct device_attribute *attr,
3910                              const char *buf, size_t count)
3911 {
3912         struct iwl_priv *priv __maybe_unused = dev_get_drvdata(d);
3913         int ant;
3914
3915         if (count == 0)
3916                 return 0;
3917
3918         if (sscanf(buf, "%1i", &ant) != 1) {
3919                 IWL_DEBUG_INFO(priv, "not in hex or decimal form.\n");
3920                 return count;
3921         }
3922
3923         if ((ant >= 0) && (ant <= 2)) {
3924                 IWL_DEBUG_INFO(priv, "Setting antenna select to %d.\n", ant);
3925                 iwl3945_mod_params.antenna = (enum iwl3945_antenna)ant;
3926         } else
3927                 IWL_DEBUG_INFO(priv, "Bad antenna select value %d.\n", ant);
3928
3929
3930         return count;
3931 }
3932
3933 static DEVICE_ATTR(antenna, S_IWUSR | S_IRUGO, show_antenna, store_antenna);
3934
3935 static ssize_t show_status(struct device *d,
3936                            struct device_attribute *attr, char *buf)
3937 {
3938         struct iwl_priv *priv = (struct iwl_priv *)d->driver_data;
3939         if (!iwl_is_alive(priv))
3940                 return -EAGAIN;
3941         return sprintf(buf, "0x%08x\n", (int)priv->status);
3942 }
3943
3944 static DEVICE_ATTR(status, S_IRUGO, show_status, NULL);
3945
3946 static ssize_t dump_error_log(struct device *d,
3947                               struct device_attribute *attr,
3948                               const char *buf, size_t count)
3949 {
3950         char *p = (char *)buf;
3951
3952         if (p[0] == '1')
3953                 iwl3945_dump_nic_error_log((struct iwl_priv *)d->driver_data);
3954
3955         return strnlen(buf, count);
3956 }
3957
3958 static DEVICE_ATTR(dump_errors, S_IWUSR, NULL, dump_error_log);
3959
3960 static ssize_t dump_event_log(struct device *d,
3961                               struct device_attribute *attr,
3962                               const char *buf, size_t count)
3963 {
3964         char *p = (char *)buf;
3965
3966         if (p[0] == '1')
3967                 iwl3945_dump_nic_event_log((struct iwl_priv *)d->driver_data);
3968
3969         return strnlen(buf, count);
3970 }
3971
3972 static DEVICE_ATTR(dump_events, S_IWUSR, NULL, dump_event_log);
3973
3974 /*****************************************************************************
3975  *
3976  * driver setup and tear down
3977  *
3978  *****************************************************************************/
3979
3980 static void iwl3945_setup_deferred_work(struct iwl_priv *priv)
3981 {
3982         priv->workqueue = create_singlethread_workqueue(DRV_NAME);
3983
3984         init_waitqueue_head(&priv->wait_command_queue);
3985
3986         INIT_WORK(&priv->up, iwl3945_bg_up);
3987         INIT_WORK(&priv->restart, iwl3945_bg_restart);
3988         INIT_WORK(&priv->rx_replenish, iwl3945_bg_rx_replenish);
3989         INIT_WORK(&priv->rf_kill, iwl_bg_rf_kill);
3990         INIT_WORK(&priv->beacon_update, iwl3945_bg_beacon_update);
3991         INIT_DELAYED_WORK(&priv->init_alive_start, iwl3945_bg_init_alive_start);
3992         INIT_DELAYED_WORK(&priv->alive_start, iwl3945_bg_alive_start);
3993         INIT_DELAYED_WORK(&priv->rfkill_poll, iwl3945_rfkill_poll);
3994         INIT_WORK(&priv->scan_completed, iwl_bg_scan_completed);
3995         INIT_WORK(&priv->request_scan, iwl3945_bg_request_scan);
3996         INIT_WORK(&priv->abort_scan, iwl_bg_abort_scan);
3997         INIT_DELAYED_WORK(&priv->scan_check, iwl_bg_scan_check);
3998
3999         iwl3945_hw_setup_deferred_work(priv);
4000
4001         tasklet_init(&priv->irq_tasklet, (void (*)(unsigned long))
4002                      iwl3945_irq_tasklet, (unsigned long)priv);
4003 }
4004
4005 static void iwl3945_cancel_deferred_work(struct iwl_priv *priv)
4006 {
4007         iwl3945_hw_cancel_deferred_work(priv);
4008
4009         cancel_delayed_work_sync(&priv->init_alive_start);
4010         cancel_delayed_work(&priv->scan_check);
4011         cancel_delayed_work(&priv->alive_start);
4012         cancel_work_sync(&priv->beacon_update);
4013 }
4014
4015 static struct attribute *iwl3945_sysfs_entries[] = {
4016         &dev_attr_antenna.attr,
4017         &dev_attr_channels.attr,
4018         &dev_attr_dump_errors.attr,
4019         &dev_attr_dump_events.attr,
4020         &dev_attr_flags.attr,
4021         &dev_attr_filter_flags.attr,
4022 #ifdef CONFIG_IWL3945_SPECTRUM_MEASUREMENT
4023         &dev_attr_measurement.attr,
4024 #endif
4025         &dev_attr_power_level.attr,
4026         &dev_attr_retry_rate.attr,
4027         &dev_attr_statistics.attr,
4028         &dev_attr_status.attr,
4029         &dev_attr_temperature.attr,
4030         &dev_attr_tx_power.attr,
4031 #ifdef CONFIG_IWLWIFI_DEBUG
4032         &dev_attr_debug_level.attr,
4033 #endif
4034         NULL
4035 };
4036
4037 static struct attribute_group iwl3945_attribute_group = {
4038         .name = NULL,           /* put in device directory */
4039         .attrs = iwl3945_sysfs_entries,
4040 };
4041
4042 static struct ieee80211_ops iwl3945_hw_ops = {
4043         .tx = iwl3945_mac_tx,
4044         .start = iwl3945_mac_start,
4045         .stop = iwl3945_mac_stop,
4046         .add_interface = iwl_mac_add_interface,
4047         .remove_interface = iwl_mac_remove_interface,
4048         .config = iwl_mac_config,
4049         .config_interface = iwl_mac_config_interface,
4050         .configure_filter = iwl_configure_filter,
4051         .set_key = iwl3945_mac_set_key,
4052         .get_tx_stats = iwl_mac_get_tx_stats,
4053         .conf_tx = iwl_mac_conf_tx,
4054         .reset_tsf = iwl_mac_reset_tsf,
4055         .bss_info_changed = iwl_bss_info_changed,
4056         .hw_scan = iwl_mac_hw_scan
4057 };
4058
4059 static int iwl3945_init_drv(struct iwl_priv *priv)
4060 {
4061         int ret;
4062         struct iwl3945_eeprom *eeprom = (struct iwl3945_eeprom *)priv->eeprom;
4063
4064         priv->retry_rate = 1;
4065         priv->ibss_beacon = NULL;
4066
4067         spin_lock_init(&priv->lock);
4068         spin_lock_init(&priv->power_data.lock);
4069         spin_lock_init(&priv->sta_lock);
4070         spin_lock_init(&priv->hcmd_lock);
4071
4072         INIT_LIST_HEAD(&priv->free_frames);
4073
4074         mutex_init(&priv->mutex);
4075
4076         /* Clear the driver's (not device's) station table */
4077         priv->cfg->ops->smgmt->clear_station_table(priv);
4078
4079         priv->data_retry_limit = -1;
4080         priv->ieee_channels = NULL;
4081         priv->ieee_rates = NULL;
4082         priv->band = IEEE80211_BAND_2GHZ;
4083
4084         priv->iw_mode = NL80211_IFTYPE_STATION;
4085
4086         iwl_reset_qos(priv);
4087
4088         priv->qos_data.qos_active = 0;
4089         priv->qos_data.qos_cap.val = 0;
4090
4091         priv->rates_mask = IWL_RATES_MASK;
4092         /* If power management is turned on, default to CAM mode */
4093         priv->power_mode = IWL_POWER_MODE_CAM;
4094         priv->tx_power_user_lmt = IWL_DEFAULT_TX_POWER;
4095
4096         if (eeprom->version < EEPROM_3945_EEPROM_VERSION) {
4097                 IWL_WARN(priv, "Unsupported EEPROM version: 0x%04X\n",
4098                          eeprom->version);
4099                 ret = -EINVAL;
4100                 goto err;
4101         }
4102         ret = iwl_init_channel_map(priv);
4103         if (ret) {
4104                 IWL_ERR(priv, "initializing regulatory failed: %d\n", ret);
4105                 goto err;
4106         }
4107
4108         /* Set up txpower settings in driver for all channels */
4109         if (iwl3945_txpower_set_from_eeprom(priv)) {
4110                 ret = -EIO;
4111                 goto err_free_channel_map;
4112         }
4113
4114         ret = iwlcore_init_geos(priv);
4115         if (ret) {
4116                 IWL_ERR(priv, "initializing geos failed: %d\n", ret);
4117                 goto err_free_channel_map;
4118         }
4119         iwl3945_init_hw_rates(priv, priv->ieee_rates);
4120
4121         return 0;
4122
4123 err_free_channel_map:
4124         iwl_free_channel_map(priv);
4125 err:
4126         return ret;
4127 }
4128
4129 static int iwl3945_setup_mac(struct iwl_priv *priv)
4130 {
4131         int ret;
4132         struct ieee80211_hw *hw = priv->hw;
4133
4134         hw->rate_control_algorithm = "iwl-3945-rs";
4135         hw->sta_data_size = sizeof(struct iwl3945_sta_priv);
4136
4137         /* Tell mac80211 our characteristics */
4138         hw->flags = IEEE80211_HW_SIGNAL_DBM |
4139                     IEEE80211_HW_NOISE_DBM |
4140                     IEEE80211_HW_SPECTRUM_MGMT;
4141
4142         hw->wiphy->interface_modes =
4143                 BIT(NL80211_IFTYPE_STATION) |
4144                 BIT(NL80211_IFTYPE_ADHOC);
4145
4146         hw->wiphy->custom_regulatory = true;
4147
4148         hw->wiphy->max_scan_ssids = PROBE_OPTION_MAX_3945;
4149         /* we create the 802.11 header and a zero-length SSID element */
4150         hw->wiphy->max_scan_ie_len = IWL_MAX_PROBE_REQUEST - 24 - 2;
4151
4152         /* Default value; 4 EDCA QOS priorities */
4153         hw->queues = 4;
4154
4155         hw->conf.beacon_int = 100;
4156
4157         if (priv->bands[IEEE80211_BAND_2GHZ].n_channels)
4158                 priv->hw->wiphy->bands[IEEE80211_BAND_2GHZ] =
4159                         &priv->bands[IEEE80211_BAND_2GHZ];
4160
4161         if (priv->bands[IEEE80211_BAND_5GHZ].n_channels)
4162                 priv->hw->wiphy->bands[IEEE80211_BAND_5GHZ] =
4163                         &priv->bands[IEEE80211_BAND_5GHZ];
4164
4165         ret = ieee80211_register_hw(priv->hw);
4166         if (ret) {
4167                 IWL_ERR(priv, "Failed to register hw (error %d)\n", ret);
4168                 return ret;
4169         }
4170         priv->mac80211_registered = 1;
4171
4172         return 0;
4173 }
4174
4175 static int iwl3945_pci_probe(struct pci_dev *pdev, const struct pci_device_id *ent)
4176 {
4177         int err = 0;
4178         struct iwl_priv *priv;
4179         struct ieee80211_hw *hw;
4180         struct iwl_cfg *cfg = (struct iwl_cfg *)(ent->driver_data);
4181         struct iwl3945_eeprom *eeprom;
4182         unsigned long flags;
4183
4184         /***********************
4185          * 1. Allocating HW data
4186          * ********************/
4187
4188         /* mac80211 allocates memory for this device instance, including
4189          *   space for this driver's private structure */
4190         hw = iwl_alloc_all(cfg, &iwl3945_hw_ops);
4191         if (hw == NULL) {
4192                 printk(KERN_ERR DRV_NAME "Can not allocate network device\n");
4193                 err = -ENOMEM;
4194                 goto out;
4195         }
4196         priv = hw->priv;
4197         SET_IEEE80211_DEV(hw, &pdev->dev);
4198
4199         if ((iwl3945_mod_params.num_of_queues > IWL39_MAX_NUM_QUEUES) ||
4200              (iwl3945_mod_params.num_of_queues < IWL_MIN_NUM_QUEUES)) {
4201                 IWL_ERR(priv,
4202                         "invalid queues_num, should be between %d and %d\n",
4203                         IWL_MIN_NUM_QUEUES, IWL39_MAX_NUM_QUEUES);
4204                 err = -EINVAL;
4205                 goto out_ieee80211_free_hw;
4206         }
4207
4208         /*
4209          * Disabling hardware scan means that mac80211 will perform scans
4210          * "the hard way", rather than using device's scan.
4211          */
4212         if (iwl3945_mod_params.disable_hw_scan) {
4213                 IWL_DEBUG_INFO(priv, "Disabling hw_scan\n");
4214                 iwl3945_hw_ops.hw_scan = NULL;
4215         }
4216
4217
4218         IWL_DEBUG_INFO(priv, "*** LOAD DRIVER ***\n");
4219         priv->cfg = cfg;
4220         priv->pci_dev = pdev;
4221
4222 #ifdef CONFIG_IWLWIFI_DEBUG
4223         priv->debug_level = iwl3945_mod_params.debug;
4224         atomic_set(&priv->restrict_refcnt, 0);
4225 #endif
4226
4227         /***************************
4228          * 2. Initializing PCI bus
4229          * *************************/
4230         if (pci_enable_device(pdev)) {
4231                 err = -ENODEV;
4232                 goto out_ieee80211_free_hw;
4233         }
4234
4235         pci_set_master(pdev);
4236
4237         err = pci_set_dma_mask(pdev, DMA_BIT_MASK(32));
4238         if (!err)
4239                 err = pci_set_consistent_dma_mask(pdev, DMA_BIT_MASK(32));
4240         if (err) {
4241                 IWL_WARN(priv, "No suitable DMA available.\n");
4242                 goto out_pci_disable_device;
4243         }
4244
4245         pci_set_drvdata(pdev, priv);
4246         err = pci_request_regions(pdev, DRV_NAME);
4247         if (err)
4248                 goto out_pci_disable_device;
4249
4250         /***********************
4251          * 3. Read REV Register
4252          * ********************/
4253         priv->hw_base = pci_iomap(pdev, 0, 0);
4254         if (!priv->hw_base) {
4255                 err = -ENODEV;
4256                 goto out_pci_release_regions;
4257         }
4258
4259         IWL_DEBUG_INFO(priv, "pci_resource_len = 0x%08llx\n",
4260                         (unsigned long long) pci_resource_len(pdev, 0));
4261         IWL_DEBUG_INFO(priv, "pci_resource_base = %p\n", priv->hw_base);
4262
4263         /* We disable the RETRY_TIMEOUT register (0x41) to keep
4264          * PCI Tx retries from interfering with C3 CPU state */
4265         pci_write_config_byte(pdev, 0x41, 0x00);
4266
4267         /* amp init */
4268         err = priv->cfg->ops->lib->apm_ops.init(priv);
4269         if (err < 0) {
4270                 IWL_DEBUG_INFO(priv, "Failed to init the card\n");
4271                 goto out_iounmap;
4272         }
4273
4274         /***********************
4275          * 4. Read EEPROM
4276          * ********************/
4277
4278         /* Read the EEPROM */
4279         err = iwl_eeprom_init(priv);
4280         if (err) {
4281                 IWL_ERR(priv, "Unable to init EEPROM\n");
4282                 goto out_iounmap;
4283         }
4284         /* MAC Address location in EEPROM same for 3945/4965 */
4285         eeprom = (struct iwl3945_eeprom *)priv->eeprom;
4286         memcpy(priv->mac_addr, eeprom->mac_address, ETH_ALEN);
4287         IWL_DEBUG_INFO(priv, "MAC address: %pM\n", priv->mac_addr);
4288         SET_IEEE80211_PERM_ADDR(priv->hw, priv->mac_addr);
4289
4290         /***********************
4291          * 5. Setup HW Constants
4292          * ********************/
4293         /* Device-specific setup */
4294         if (iwl3945_hw_set_hw_params(priv)) {
4295                 IWL_ERR(priv, "failed to set hw settings\n");
4296                 goto out_eeprom_free;
4297         }
4298
4299         /***********************
4300          * 6. Setup priv
4301          * ********************/
4302
4303         err = iwl3945_init_drv(priv);
4304         if (err) {
4305                 IWL_ERR(priv, "initializing driver failed\n");
4306                 goto out_unset_hw_params;
4307         }
4308
4309         IWL_INFO(priv, "Detected Intel Wireless WiFi Link %s\n",
4310                 priv->cfg->name);
4311
4312         /***********************************
4313          * 7. Initialize Module Parameters
4314          * **********************************/
4315
4316         /* Initialize module parameter values here */
4317         /* Disable radio (SW RF KILL) via parameter when loading driver */
4318         if (iwl3945_mod_params.disable) {
4319                 set_bit(STATUS_RF_KILL_SW, &priv->status);
4320                 IWL_DEBUG_INFO(priv, "Radio disabled.\n");
4321         }
4322
4323
4324         /***********************
4325          * 8. Setup Services
4326          * ********************/
4327
4328         spin_lock_irqsave(&priv->lock, flags);
4329         iwl_disable_interrupts(priv);
4330         spin_unlock_irqrestore(&priv->lock, flags);
4331
4332         pci_enable_msi(priv->pci_dev);
4333
4334         err = request_irq(priv->pci_dev->irq, iwl_isr, IRQF_SHARED,
4335                           DRV_NAME, priv);
4336         if (err) {
4337                 IWL_ERR(priv, "Error allocating IRQ %d\n", priv->pci_dev->irq);
4338                 goto out_disable_msi;
4339         }
4340
4341         err = sysfs_create_group(&pdev->dev.kobj, &iwl3945_attribute_group);
4342         if (err) {
4343                 IWL_ERR(priv, "failed to create sysfs device attributes\n");
4344                 goto out_release_irq;
4345         }
4346
4347         iwl_set_rxon_channel(priv,
4348                              &priv->bands[IEEE80211_BAND_2GHZ].channels[5]);
4349         iwl3945_setup_deferred_work(priv);
4350         iwl3945_setup_rx_handlers(priv);
4351
4352         /*********************************
4353          * 9. Setup and Register mac80211
4354          * *******************************/
4355
4356         iwl_enable_interrupts(priv);
4357
4358         err = iwl3945_setup_mac(priv);
4359         if (err)
4360                 goto  out_remove_sysfs;
4361
4362         err = iwl_dbgfs_register(priv, DRV_NAME);
4363         if (err)
4364                 IWL_ERR(priv, "failed to create debugfs files. Ignoring error: %d\n", err);
4365
4366         err = iwl_rfkill_init(priv);
4367         if (err)
4368                 IWL_ERR(priv, "Unable to initialize RFKILL system. "
4369                                   "Ignoring error: %d\n", err);
4370         else
4371                 iwl_rfkill_set_hw_state(priv);
4372
4373         /* Start monitoring the killswitch */
4374         queue_delayed_work(priv->workqueue, &priv->rfkill_poll,
4375                            2 * HZ);
4376
4377         return 0;
4378
4379  out_remove_sysfs:
4380         destroy_workqueue(priv->workqueue);
4381         priv->workqueue = NULL;
4382         sysfs_remove_group(&pdev->dev.kobj, &iwl3945_attribute_group);
4383  out_release_irq:
4384         free_irq(priv->pci_dev->irq, priv);
4385  out_disable_msi:
4386         pci_disable_msi(priv->pci_dev);
4387         iwlcore_free_geos(priv);
4388         iwl_free_channel_map(priv);
4389  out_unset_hw_params:
4390         iwl3945_unset_hw_params(priv);
4391  out_eeprom_free:
4392         iwl_eeprom_free(priv);
4393  out_iounmap:
4394         pci_iounmap(pdev, priv->hw_base);
4395  out_pci_release_regions:
4396         pci_release_regions(pdev);
4397  out_pci_disable_device:
4398         pci_set_drvdata(pdev, NULL);
4399         pci_disable_device(pdev);
4400  out_ieee80211_free_hw:
4401         ieee80211_free_hw(priv->hw);
4402  out:
4403         return err;
4404 }
4405
4406 static void __devexit iwl3945_pci_remove(struct pci_dev *pdev)
4407 {
4408         struct iwl_priv *priv = pci_get_drvdata(pdev);
4409         unsigned long flags;
4410
4411         if (!priv)
4412                 return;
4413
4414         IWL_DEBUG_INFO(priv, "*** UNLOAD DRIVER ***\n");
4415
4416         iwl_dbgfs_unregister(priv);
4417
4418         set_bit(STATUS_EXIT_PENDING, &priv->status);
4419
4420         if (priv->mac80211_registered) {
4421                 ieee80211_unregister_hw(priv->hw);
4422                 priv->mac80211_registered = 0;
4423         } else {
4424                 iwl3945_down(priv);
4425         }
4426
4427         /* make sure we flush any pending irq or
4428          * tasklet for the driver
4429          */
4430         spin_lock_irqsave(&priv->lock, flags);
4431         iwl_disable_interrupts(priv);
4432         spin_unlock_irqrestore(&priv->lock, flags);
4433
4434         iwl_synchronize_irq(priv);
4435
4436         sysfs_remove_group(&pdev->dev.kobj, &iwl3945_attribute_group);
4437
4438         iwl_rfkill_unregister(priv);
4439         cancel_delayed_work(&priv->rfkill_poll);
4440
4441         iwl3945_dealloc_ucode_pci(priv);
4442
4443         if (priv->rxq.bd)
4444                 iwl_rx_queue_free(priv, &priv->rxq);
4445         iwl3945_hw_txq_ctx_free(priv);
4446
4447         iwl3945_unset_hw_params(priv);
4448         priv->cfg->ops->smgmt->clear_station_table(priv);
4449
4450         /*netif_stop_queue(dev); */
4451         flush_workqueue(priv->workqueue);
4452
4453         /* ieee80211_unregister_hw calls iwl3945_mac_stop, which flushes
4454          * priv->workqueue... so we can't take down the workqueue
4455          * until now... */
4456         destroy_workqueue(priv->workqueue);
4457         priv->workqueue = NULL;
4458
4459         free_irq(pdev->irq, priv);
4460         pci_disable_msi(pdev);
4461
4462         pci_iounmap(pdev, priv->hw_base);
4463         pci_release_regions(pdev);
4464         pci_disable_device(pdev);
4465         pci_set_drvdata(pdev, NULL);
4466
4467         iwl_free_channel_map(priv);
4468         iwlcore_free_geos(priv);
4469         kfree(priv->scan);
4470         if (priv->ibss_beacon)
4471                 dev_kfree_skb(priv->ibss_beacon);
4472
4473         ieee80211_free_hw(priv->hw);
4474 }
4475
4476
4477 /*****************************************************************************
4478  *
4479  * driver and module entry point
4480  *
4481  *****************************************************************************/
4482
4483 static struct pci_driver iwl3945_driver = {
4484         .name = DRV_NAME,
4485         .id_table = iwl3945_hw_card_ids,
4486         .probe = iwl3945_pci_probe,
4487         .remove = __devexit_p(iwl3945_pci_remove),
4488 #ifdef CONFIG_PM
4489         .suspend = iwl_pci_suspend,
4490         .resume = iwl_pci_resume,
4491 #endif
4492 };
4493
4494 static int __init iwl3945_init(void)
4495 {
4496
4497         int ret;
4498         printk(KERN_INFO DRV_NAME ": " DRV_DESCRIPTION ", " DRV_VERSION "\n");
4499         printk(KERN_INFO DRV_NAME ": " DRV_COPYRIGHT "\n");
4500
4501         ret = iwl3945_rate_control_register();
4502         if (ret) {
4503                 printk(KERN_ERR DRV_NAME
4504                        "Unable to register rate control algorithm: %d\n", ret);
4505                 return ret;
4506         }
4507
4508         ret = pci_register_driver(&iwl3945_driver);
4509         if (ret) {
4510                 printk(KERN_ERR DRV_NAME "Unable to initialize PCI module\n");
4511                 goto error_register;
4512         }
4513
4514         return ret;
4515
4516 error_register:
4517         iwl3945_rate_control_unregister();
4518         return ret;
4519 }
4520
4521 static void __exit iwl3945_exit(void)
4522 {
4523         pci_unregister_driver(&iwl3945_driver);
4524         iwl3945_rate_control_unregister();
4525 }
4526
4527 MODULE_FIRMWARE(IWL3945_MODULE_FIRMWARE(IWL3945_UCODE_API_MAX));
4528
4529 module_param_named(antenna, iwl3945_mod_params.antenna, int, 0444);
4530 MODULE_PARM_DESC(antenna, "select antenna (1=Main, 2=Aux, default 0 [both])");
4531 module_param_named(disable, iwl3945_mod_params.disable, int, 0444);
4532 MODULE_PARM_DESC(disable, "manually disable the radio (default 0 [radio on])");
4533 module_param_named(swcrypto, iwl3945_mod_params.sw_crypto, int, 0444);
4534 MODULE_PARM_DESC(swcrypto,
4535                  "using software crypto (default 1 [software])\n");
4536 module_param_named(debug, iwl3945_mod_params.debug, uint, 0444);
4537 MODULE_PARM_DESC(debug, "debug output mask");
4538 module_param_named(disable_hw_scan, iwl3945_mod_params.disable_hw_scan, int, 0444);
4539 MODULE_PARM_DESC(disable_hw_scan, "disable hardware scanning (default 0)");
4540
4541 module_param_named(queues_num, iwl3945_mod_params.num_of_queues, int, 0444);
4542 MODULE_PARM_DESC(queues_num, "number of hw queues.");
4543
4544 module_param_named(fw_restart3945, iwl3945_mod_params.restart_fw, int, 0444);
4545 MODULE_PARM_DESC(fw_restart3945, "restart firmware in case of error");
4546
4547 module_exit(iwl3945_exit);
4548 module_init(iwl3945_init);