iwl3945: synchronize timestamp with uCode
[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 static 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)
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 static int iwl3945_send_rxon_assoc(struct iwl_priv *priv)
237 {
238         int rc = 0;
239         struct iwl_rx_packet *res = NULL;
240         struct iwl3945_rxon_assoc_cmd rxon_assoc;
241         struct iwl_host_cmd cmd = {
242                 .id = REPLY_RXON_ASSOC,
243                 .len = sizeof(rxon_assoc),
244                 .meta.flags = CMD_WANT_SKB,
245                 .data = &rxon_assoc,
246         };
247         const struct iwl_rxon_cmd *rxon1 = &priv->staging_rxon;
248         const struct iwl_rxon_cmd *rxon2 = &priv->active_rxon;
249
250         if ((rxon1->flags == rxon2->flags) &&
251             (rxon1->filter_flags == rxon2->filter_flags) &&
252             (rxon1->cck_basic_rates == rxon2->cck_basic_rates) &&
253             (rxon1->ofdm_basic_rates == rxon2->ofdm_basic_rates)) {
254                 IWL_DEBUG_INFO(priv, "Using current RXON_ASSOC.  Not resending.\n");
255                 return 0;
256         }
257
258         rxon_assoc.flags = priv->staging_rxon.flags;
259         rxon_assoc.filter_flags = priv->staging_rxon.filter_flags;
260         rxon_assoc.ofdm_basic_rates = priv->staging_rxon.ofdm_basic_rates;
261         rxon_assoc.cck_basic_rates = priv->staging_rxon.cck_basic_rates;
262         rxon_assoc.reserved = 0;
263
264         rc = iwl_send_cmd_sync(priv, &cmd);
265         if (rc)
266                 return rc;
267
268         res = (struct iwl_rx_packet *)cmd.meta.u.skb->data;
269         if (res->hdr.flags & IWL_CMD_FAILED_MSK) {
270                 IWL_ERR(priv, "Bad return from REPLY_RXON_ASSOC command\n");
271                 rc = -EIO;
272         }
273
274         priv->alloc_rxb_skb--;
275         dev_kfree_skb_any(cmd.meta.u.skb);
276
277         return rc;
278 }
279
280 /**
281  * iwl3945_get_antenna_flags - Get antenna flags for RXON command
282  * @priv: eeprom and antenna fields are used to determine antenna flags
283  *
284  * priv->eeprom39  is used to determine if antenna AUX/MAIN are reversed
285  * iwl3945_mod_params.antenna specifies the antenna diversity mode:
286  *
287  * IWL_ANTENNA_DIVERSITY - NIC selects best antenna by itself
288  * IWL_ANTENNA_MAIN      - Force MAIN antenna
289  * IWL_ANTENNA_AUX       - Force AUX antenna
290  */
291 __le32 iwl3945_get_antenna_flags(const struct iwl_priv *priv)
292 {
293         struct iwl3945_eeprom *eeprom = (struct iwl3945_eeprom *)priv->eeprom;
294
295         switch (iwl3945_mod_params.antenna) {
296         case IWL_ANTENNA_DIVERSITY:
297                 return 0;
298
299         case IWL_ANTENNA_MAIN:
300                 if (eeprom->antenna_switch_type)
301                         return RXON_FLG_DIS_DIV_MSK | RXON_FLG_ANT_B_MSK;
302                 return RXON_FLG_DIS_DIV_MSK | RXON_FLG_ANT_A_MSK;
303
304         case IWL_ANTENNA_AUX:
305                 if (eeprom->antenna_switch_type)
306                         return RXON_FLG_DIS_DIV_MSK | RXON_FLG_ANT_A_MSK;
307                 return RXON_FLG_DIS_DIV_MSK | RXON_FLG_ANT_B_MSK;
308         }
309
310         /* bad antenna selector value */
311         IWL_ERR(priv, "Bad antenna selector value (0x%x)\n",
312                 iwl3945_mod_params.antenna);
313
314         return 0;               /* "diversity" is default if error */
315 }
316
317 /**
318  * iwl3945_commit_rxon - commit staging_rxon to hardware
319  *
320  * The RXON command in staging_rxon is committed to the hardware and
321  * the active_rxon structure is updated with the new data.  This
322  * function correctly transitions out of the RXON_ASSOC_MSK state if
323  * a HW tune is required based on the RXON structure changes.
324  */
325 static int iwl3945_commit_rxon(struct iwl_priv *priv)
326 {
327         /* cast away the const for active_rxon in this function */
328         struct iwl3945_rxon_cmd *active_rxon = (void *)&priv->active_rxon;
329         struct iwl3945_rxon_cmd *staging_rxon = (void *)&priv->staging_rxon;
330         int rc = 0;
331
332         if (!iwl_is_alive(priv))
333                 return -1;
334
335         /* always get timestamp with Rx frame */
336         staging_rxon->flags |= RXON_FLG_TSF2HOST_MSK;
337
338         /* select antenna */
339         staging_rxon->flags &=
340             ~(RXON_FLG_DIS_DIV_MSK | RXON_FLG_ANT_SEL_MSK);
341         staging_rxon->flags |= iwl3945_get_antenna_flags(priv);
342
343         rc = iwl_check_rxon_cmd(priv);
344         if (rc) {
345                 IWL_ERR(priv, "Invalid RXON configuration.  Not committing.\n");
346                 return -EINVAL;
347         }
348
349         /* If we don't need to send a full RXON, we can use
350          * iwl3945_rxon_assoc_cmd which is used to reconfigure filter
351          * and other flags for the current radio configuration. */
352         if (!iwl_full_rxon_required(priv)) {
353                 rc = iwl3945_send_rxon_assoc(priv);
354                 if (rc) {
355                         IWL_ERR(priv, "Error setting RXON_ASSOC "
356                                   "configuration (%d).\n", rc);
357                         return rc;
358                 }
359
360                 memcpy(active_rxon, staging_rxon, sizeof(*active_rxon));
361
362                 return 0;
363         }
364
365         /* If we are currently associated and the new config requires
366          * an RXON_ASSOC and the new config wants the associated mask enabled,
367          * we must clear the associated from the active configuration
368          * before we apply the new config */
369         if (iwl_is_associated(priv) &&
370             (staging_rxon->filter_flags & RXON_FILTER_ASSOC_MSK)) {
371                 IWL_DEBUG_INFO(priv, "Toggling associated bit on current RXON\n");
372                 active_rxon->filter_flags &= ~RXON_FILTER_ASSOC_MSK;
373
374                 /*
375                  * reserved4 and 5 could have been filled by the iwlcore code.
376                  * Let's clear them before pushing to the 3945.
377                  */
378                 active_rxon->reserved4 = 0;
379                 active_rxon->reserved5 = 0;
380                 rc = iwl_send_cmd_pdu(priv, REPLY_RXON,
381                                       sizeof(struct iwl3945_rxon_cmd),
382                                       &priv->active_rxon);
383
384                 /* If the mask clearing failed then we set
385                  * active_rxon back to what it was previously */
386                 if (rc) {
387                         active_rxon->filter_flags |= RXON_FILTER_ASSOC_MSK;
388                         IWL_ERR(priv, "Error clearing ASSOC_MSK on current "
389                                   "configuration (%d).\n", rc);
390                         return rc;
391                 }
392         }
393
394         IWL_DEBUG_INFO(priv, "Sending RXON\n"
395                        "* with%s RXON_FILTER_ASSOC_MSK\n"
396                        "* channel = %d\n"
397                        "* bssid = %pM\n",
398                        ((priv->staging_rxon.filter_flags &
399                          RXON_FILTER_ASSOC_MSK) ? "" : "out"),
400                        le16_to_cpu(staging_rxon->channel),
401                        staging_rxon->bssid_addr);
402
403         /*
404          * reserved4 and 5 could have been filled by the iwlcore code.
405          * Let's clear them before pushing to the 3945.
406          */
407         staging_rxon->reserved4 = 0;
408         staging_rxon->reserved5 = 0;
409
410         /* Apply the new configuration */
411         rc = iwl_send_cmd_pdu(priv, REPLY_RXON,
412                               sizeof(struct iwl3945_rxon_cmd),
413                               staging_rxon);
414         if (rc) {
415                 IWL_ERR(priv, "Error setting new configuration (%d).\n", rc);
416                 return rc;
417         }
418
419         memcpy(active_rxon, staging_rxon, sizeof(*active_rxon));
420
421         iwl3945_clear_stations_table(priv);
422
423         /* If we issue a new RXON command which required a tune then we must
424          * send a new TXPOWER command or we won't be able to Tx any frames */
425         rc = priv->cfg->ops->lib->send_tx_power(priv);
426         if (rc) {
427                 IWL_ERR(priv, "Error setting Tx power (%d).\n", rc);
428                 return rc;
429         }
430
431         /* Add the broadcast address so we can send broadcast frames */
432         if (iwl3945_add_station(priv, iwl_bcast_addr, 0, 0) ==
433             IWL_INVALID_STATION) {
434                 IWL_ERR(priv, "Error adding BROADCAST address for transmit.\n");
435                 return -EIO;
436         }
437
438         /* If we have set the ASSOC_MSK and we are in BSS mode then
439          * add the IWL_AP_ID to the station rate table */
440         if (iwl_is_associated(priv) &&
441             (priv->iw_mode == NL80211_IFTYPE_STATION))
442                 if (iwl3945_add_station(priv, priv->active_rxon.bssid_addr,
443                                         1, 0)
444                     == IWL_INVALID_STATION) {
445                         IWL_ERR(priv, "Error adding AP address for transmit\n");
446                         return -EIO;
447                 }
448
449         /* Init the hardware's rate fallback order based on the band */
450         rc = iwl3945_init_hw_rate_table(priv);
451         if (rc) {
452                 IWL_ERR(priv, "Error setting HW rate table: %02X\n", rc);
453                 return -EIO;
454         }
455
456         return 0;
457 }
458
459 static int iwl3945_update_sta_key_info(struct iwl_priv *priv,
460                                    struct ieee80211_key_conf *keyconf,
461                                    u8 sta_id)
462 {
463         unsigned long flags;
464         __le16 key_flags = 0;
465
466         switch (keyconf->alg) {
467         case ALG_CCMP:
468                 key_flags |= STA_KEY_FLG_CCMP;
469                 key_flags |= cpu_to_le16(
470                                 keyconf->keyidx << STA_KEY_FLG_KEYID_POS);
471                 key_flags &= ~STA_KEY_FLG_INVALID;
472                 break;
473         case ALG_TKIP:
474         case ALG_WEP:
475         default:
476                 return -EINVAL;
477         }
478         spin_lock_irqsave(&priv->sta_lock, flags);
479         priv->stations_39[sta_id].keyinfo.alg = keyconf->alg;
480         priv->stations_39[sta_id].keyinfo.keylen = keyconf->keylen;
481         memcpy(priv->stations_39[sta_id].keyinfo.key, keyconf->key,
482                keyconf->keylen);
483
484         memcpy(priv->stations_39[sta_id].sta.key.key, keyconf->key,
485                keyconf->keylen);
486         priv->stations_39[sta_id].sta.key.key_flags = key_flags;
487         priv->stations_39[sta_id].sta.sta.modify_mask = STA_MODIFY_KEY_MASK;
488         priv->stations_39[sta_id].sta.mode = STA_CONTROL_MODIFY_MSK;
489
490         spin_unlock_irqrestore(&priv->sta_lock, flags);
491
492         IWL_DEBUG_INFO(priv, "hwcrypto: modify ucode station key info\n");
493         iwl_send_add_sta(priv,
494                 (struct iwl_addsta_cmd *)&priv->stations_39[sta_id].sta, 0);
495         return 0;
496 }
497
498 static int iwl3945_clear_sta_key_info(struct iwl_priv *priv, u8 sta_id)
499 {
500         unsigned long flags;
501
502         spin_lock_irqsave(&priv->sta_lock, flags);
503         memset(&priv->stations_39[sta_id].keyinfo, 0, sizeof(struct iwl3945_hw_key));
504         memset(&priv->stations_39[sta_id].sta.key, 0,
505                 sizeof(struct iwl4965_keyinfo));
506         priv->stations_39[sta_id].sta.key.key_flags = STA_KEY_FLG_NO_ENC;
507         priv->stations_39[sta_id].sta.sta.modify_mask = STA_MODIFY_KEY_MASK;
508         priv->stations_39[sta_id].sta.mode = STA_CONTROL_MODIFY_MSK;
509         spin_unlock_irqrestore(&priv->sta_lock, flags);
510
511         IWL_DEBUG_INFO(priv, "hwcrypto: clear ucode station key info\n");
512         iwl_send_add_sta(priv,
513                 (struct iwl_addsta_cmd *)&priv->stations_39[sta_id].sta, 0);
514         return 0;
515 }
516
517 static void iwl3945_clear_free_frames(struct iwl_priv *priv)
518 {
519         struct list_head *element;
520
521         IWL_DEBUG_INFO(priv, "%d frames on pre-allocated heap on clear.\n",
522                        priv->frames_count);
523
524         while (!list_empty(&priv->free_frames)) {
525                 element = priv->free_frames.next;
526                 list_del(element);
527                 kfree(list_entry(element, struct iwl3945_frame, list));
528                 priv->frames_count--;
529         }
530
531         if (priv->frames_count) {
532                 IWL_WARN(priv, "%d frames still in use.  Did we lose one?\n",
533                             priv->frames_count);
534                 priv->frames_count = 0;
535         }
536 }
537
538 static struct iwl3945_frame *iwl3945_get_free_frame(struct iwl_priv *priv)
539 {
540         struct iwl3945_frame *frame;
541         struct list_head *element;
542         if (list_empty(&priv->free_frames)) {
543                 frame = kzalloc(sizeof(*frame), GFP_KERNEL);
544                 if (!frame) {
545                         IWL_ERR(priv, "Could not allocate frame!\n");
546                         return NULL;
547                 }
548
549                 priv->frames_count++;
550                 return frame;
551         }
552
553         element = priv->free_frames.next;
554         list_del(element);
555         return list_entry(element, struct iwl3945_frame, list);
556 }
557
558 static void iwl3945_free_frame(struct iwl_priv *priv, struct iwl3945_frame *frame)
559 {
560         memset(frame, 0, sizeof(*frame));
561         list_add(&frame->list, &priv->free_frames);
562 }
563
564 unsigned int iwl3945_fill_beacon_frame(struct iwl_priv *priv,
565                                 struct ieee80211_hdr *hdr,
566                                 int left)
567 {
568
569         if (!iwl_is_associated(priv) || !priv->ibss_beacon ||
570             ((priv->iw_mode != NL80211_IFTYPE_ADHOC) &&
571              (priv->iw_mode != NL80211_IFTYPE_AP)))
572                 return 0;
573
574         if (priv->ibss_beacon->len > left)
575                 return 0;
576
577         memcpy(hdr, priv->ibss_beacon->data, priv->ibss_beacon->len);
578
579         return priv->ibss_beacon->len;
580 }
581
582 static int iwl3945_send_beacon_cmd(struct iwl_priv *priv)
583 {
584         struct iwl3945_frame *frame;
585         unsigned int frame_size;
586         int rc;
587         u8 rate;
588
589         frame = iwl3945_get_free_frame(priv);
590
591         if (!frame) {
592                 IWL_ERR(priv, "Could not obtain free frame buffer for beacon "
593                           "command.\n");
594                 return -ENOMEM;
595         }
596
597         rate = iwl_rate_get_lowest_plcp(priv);
598
599         frame_size = iwl3945_hw_get_beacon_cmd(priv, frame, rate);
600
601         rc = iwl_send_cmd_pdu(priv, REPLY_TX_BEACON, frame_size,
602                               &frame->u.cmd[0]);
603
604         iwl3945_free_frame(priv, frame);
605
606         return rc;
607 }
608
609 static void iwl3945_unset_hw_params(struct iwl_priv *priv)
610 {
611         if (priv->shared_virt)
612                 pci_free_consistent(priv->pci_dev,
613                                     sizeof(struct iwl3945_shared),
614                                     priv->shared_virt,
615                                     priv->shared_phys);
616 }
617
618 /*
619  * QoS  support
620 */
621 static int iwl3945_send_qos_params_command(struct iwl_priv *priv,
622                                        struct iwl_qosparam_cmd *qos)
623 {
624
625         return iwl_send_cmd_pdu(priv, REPLY_QOS_PARAM,
626                                 sizeof(struct iwl_qosparam_cmd), qos);
627 }
628
629 static void iwl3945_activate_qos(struct iwl_priv *priv, u8 force)
630 {
631         unsigned long flags;
632
633         if (test_bit(STATUS_EXIT_PENDING, &priv->status))
634                 return;
635
636         spin_lock_irqsave(&priv->lock, flags);
637         priv->qos_data.def_qos_parm.qos_flags = 0;
638
639         if (priv->qos_data.qos_cap.q_AP.queue_request &&
640             !priv->qos_data.qos_cap.q_AP.txop_request)
641                 priv->qos_data.def_qos_parm.qos_flags |=
642                         QOS_PARAM_FLG_TXOP_TYPE_MSK;
643
644         if (priv->qos_data.qos_active)
645                 priv->qos_data.def_qos_parm.qos_flags |=
646                         QOS_PARAM_FLG_UPDATE_EDCA_MSK;
647
648         spin_unlock_irqrestore(&priv->lock, flags);
649
650         if (force || iwl_is_associated(priv)) {
651                 IWL_DEBUG_QOS(priv, "send QoS cmd with QoS active %d \n",
652                               priv->qos_data.qos_active);
653
654                 iwl3945_send_qos_params_command(priv,
655                                 &(priv->qos_data.def_qos_parm));
656         }
657 }
658
659
660 #define MAX_UCODE_BEACON_INTERVAL       1024
661 #define INTEL_CONN_LISTEN_INTERVAL      cpu_to_le16(0xA)
662
663 static __le16 iwl3945_adjust_beacon_interval(u16 beacon_val)
664 {
665         u16 new_val = 0;
666         u16 beacon_factor = 0;
667
668         beacon_factor =
669             (beacon_val + MAX_UCODE_BEACON_INTERVAL)
670                 / MAX_UCODE_BEACON_INTERVAL;
671         new_val = beacon_val / beacon_factor;
672
673         return cpu_to_le16(new_val);
674 }
675
676 static void iwl3945_setup_rxon_timing(struct iwl_priv *priv)
677 {
678         u64 interval_tm_unit;
679         u64 tsf, result;
680         unsigned long flags;
681         struct ieee80211_conf *conf = NULL;
682         u16 beacon_int = 0;
683
684         conf = ieee80211_get_hw_conf(priv->hw);
685
686         spin_lock_irqsave(&priv->lock, flags);
687         priv->rxon_timing.timestamp = cpu_to_le64(priv->timestamp);
688         priv->rxon_timing.listen_interval = INTEL_CONN_LISTEN_INTERVAL;
689
690         tsf = priv->timestamp;
691
692         beacon_int = priv->beacon_int;
693         spin_unlock_irqrestore(&priv->lock, flags);
694
695         if (priv->iw_mode == NL80211_IFTYPE_STATION) {
696                 if (beacon_int == 0) {
697                         priv->rxon_timing.beacon_interval = cpu_to_le16(100);
698                         priv->rxon_timing.beacon_init_val = cpu_to_le32(102400);
699                 } else {
700                         priv->rxon_timing.beacon_interval =
701                                 cpu_to_le16(beacon_int);
702                         priv->rxon_timing.beacon_interval =
703                             iwl3945_adjust_beacon_interval(
704                                 le16_to_cpu(priv->rxon_timing.beacon_interval));
705                 }
706
707                 priv->rxon_timing.atim_window = 0;
708         } else {
709                 priv->rxon_timing.beacon_interval =
710                         iwl3945_adjust_beacon_interval(conf->beacon_int);
711                 /* TODO: we need to get atim_window from upper stack
712                  * for now we set to 0 */
713                 priv->rxon_timing.atim_window = 0;
714         }
715
716         interval_tm_unit =
717                 (le16_to_cpu(priv->rxon_timing.beacon_interval) * 1024);
718         result = do_div(tsf, interval_tm_unit);
719         priv->rxon_timing.beacon_init_val =
720             cpu_to_le32((u32) ((u64) interval_tm_unit - result));
721
722         IWL_DEBUG_ASSOC(priv,
723                 "beacon interval %d beacon timer %d beacon tim %d\n",
724                 le16_to_cpu(priv->rxon_timing.beacon_interval),
725                 le32_to_cpu(priv->rxon_timing.beacon_init_val),
726                 le16_to_cpu(priv->rxon_timing.atim_window));
727 }
728
729 static int iwl3945_set_mode(struct iwl_priv *priv, int mode)
730 {
731         if (mode == NL80211_IFTYPE_ADHOC) {
732                 const struct iwl_channel_info *ch_info;
733
734                 ch_info = iwl_get_channel_info(priv,
735                         priv->band,
736                         le16_to_cpu(priv->staging_rxon.channel));
737
738                 if (!ch_info || !is_channel_ibss(ch_info)) {
739                         IWL_ERR(priv, "channel %d not IBSS channel\n",
740                                   le16_to_cpu(priv->staging_rxon.channel));
741                         return -EINVAL;
742                 }
743         }
744
745         iwl_connection_init_rx_config(priv, mode);
746
747         iwl3945_clear_stations_table(priv);
748
749         /* don't commit rxon if rf-kill is on*/
750         if (!iwl_is_ready_rf(priv))
751                 return -EAGAIN;
752
753         cancel_delayed_work(&priv->scan_check);
754         if (iwl_scan_cancel_timeout(priv, 100)) {
755                 IWL_WARN(priv, "Aborted scan still in progress after 100ms\n");
756                 IWL_DEBUG_MAC80211(priv, "leaving - scan abort failed.\n");
757                 return -EAGAIN;
758         }
759
760         iwl3945_commit_rxon(priv);
761
762         return 0;
763 }
764
765 static void iwl3945_build_tx_cmd_hwcrypto(struct iwl_priv *priv,
766                                       struct ieee80211_tx_info *info,
767                                       struct iwl_cmd *cmd,
768                                       struct sk_buff *skb_frag,
769                                       int last_frag)
770 {
771         struct iwl3945_tx_cmd *tx = (struct iwl3945_tx_cmd *)cmd->cmd.payload;
772         struct iwl3945_hw_key *keyinfo =
773             &priv->stations_39[info->control.hw_key->hw_key_idx].keyinfo;
774
775         switch (keyinfo->alg) {
776         case ALG_CCMP:
777                 tx->sec_ctl = TX_CMD_SEC_CCM;
778                 memcpy(tx->key, keyinfo->key, keyinfo->keylen);
779                 IWL_DEBUG_TX(priv, "tx_cmd with AES hwcrypto\n");
780                 break;
781
782         case ALG_TKIP:
783 #if 0
784                 tx->sec_ctl = TX_CMD_SEC_TKIP;
785
786                 if (last_frag)
787                         memcpy(tx->tkip_mic.byte, skb_frag->tail - 8,
788                                8);
789                 else
790                         memset(tx->tkip_mic.byte, 0, 8);
791 #endif
792                 break;
793
794         case ALG_WEP:
795                 tx->sec_ctl = TX_CMD_SEC_WEP |
796                     (info->control.hw_key->hw_key_idx & TX_CMD_SEC_MSK) << TX_CMD_SEC_SHIFT;
797
798                 if (keyinfo->keylen == 13)
799                         tx->sec_ctl |= TX_CMD_SEC_KEY128;
800
801                 memcpy(&tx->key[3], keyinfo->key, keyinfo->keylen);
802
803                 IWL_DEBUG_TX(priv, "Configuring packet for WEP encryption "
804                              "with key %d\n", info->control.hw_key->hw_key_idx);
805                 break;
806
807         default:
808                 IWL_ERR(priv, "Unknown encode alg %d\n", keyinfo->alg);
809                 break;
810         }
811 }
812
813 /*
814  * handle build REPLY_TX command notification.
815  */
816 static void iwl3945_build_tx_cmd_basic(struct iwl_priv *priv,
817                                   struct iwl_cmd *cmd,
818                                   struct ieee80211_tx_info *info,
819                                   struct ieee80211_hdr *hdr, u8 std_id)
820 {
821         struct iwl3945_tx_cmd *tx = (struct iwl3945_tx_cmd *)cmd->cmd.payload;
822         __le32 tx_flags = tx->tx_flags;
823         __le16 fc = hdr->frame_control;
824         u8 rc_flags = info->control.rates[0].flags;
825
826         tx->stop_time.life_time = TX_CMD_LIFE_TIME_INFINITE;
827         if (!(info->flags & IEEE80211_TX_CTL_NO_ACK)) {
828                 tx_flags |= TX_CMD_FLG_ACK_MSK;
829                 if (ieee80211_is_mgmt(fc))
830                         tx_flags |= TX_CMD_FLG_SEQ_CTL_MSK;
831                 if (ieee80211_is_probe_resp(fc) &&
832                     !(le16_to_cpu(hdr->seq_ctrl) & 0xf))
833                         tx_flags |= TX_CMD_FLG_TSF_MSK;
834         } else {
835                 tx_flags &= (~TX_CMD_FLG_ACK_MSK);
836                 tx_flags |= TX_CMD_FLG_SEQ_CTL_MSK;
837         }
838
839         tx->sta_id = std_id;
840         if (ieee80211_has_morefrags(fc))
841                 tx_flags |= TX_CMD_FLG_MORE_FRAG_MSK;
842
843         if (ieee80211_is_data_qos(fc)) {
844                 u8 *qc = ieee80211_get_qos_ctl(hdr);
845                 tx->tid_tspec = qc[0] & 0xf;
846                 tx_flags &= ~TX_CMD_FLG_SEQ_CTL_MSK;
847         } else {
848                 tx_flags |= TX_CMD_FLG_SEQ_CTL_MSK;
849         }
850
851         if (rc_flags & IEEE80211_TX_RC_USE_RTS_CTS) {
852                 tx_flags |= TX_CMD_FLG_RTS_MSK;
853                 tx_flags &= ~TX_CMD_FLG_CTS_MSK;
854         } else if (rc_flags & IEEE80211_TX_RC_USE_CTS_PROTECT) {
855                 tx_flags &= ~TX_CMD_FLG_RTS_MSK;
856                 tx_flags |= TX_CMD_FLG_CTS_MSK;
857         }
858
859         if ((tx_flags & TX_CMD_FLG_RTS_MSK) || (tx_flags & TX_CMD_FLG_CTS_MSK))
860                 tx_flags |= TX_CMD_FLG_FULL_TXOP_PROT_MSK;
861
862         tx_flags &= ~(TX_CMD_FLG_ANT_SEL_MSK);
863         if (ieee80211_is_mgmt(fc)) {
864                 if (ieee80211_is_assoc_req(fc) || ieee80211_is_reassoc_req(fc))
865                         tx->timeout.pm_frame_timeout = cpu_to_le16(3);
866                 else
867                         tx->timeout.pm_frame_timeout = cpu_to_le16(2);
868         } else {
869                 tx->timeout.pm_frame_timeout = 0;
870 #ifdef CONFIG_IWL3945_LEDS
871                 priv->rxtxpackets += le16_to_cpu(cmd->cmd.tx.len);
872 #endif
873         }
874
875         tx->driver_txop = 0;
876         tx->tx_flags = tx_flags;
877         tx->next_frame_len = 0;
878 }
879
880 /**
881  * iwl3945_get_sta_id - Find station's index within station table
882  */
883 static int iwl3945_get_sta_id(struct iwl_priv *priv, struct ieee80211_hdr *hdr)
884 {
885         int sta_id;
886         u16 fc = le16_to_cpu(hdr->frame_control);
887
888         /* If this frame is broadcast or management, use broadcast station id */
889         if (((fc & IEEE80211_FCTL_FTYPE) != IEEE80211_FTYPE_DATA) ||
890             is_multicast_ether_addr(hdr->addr1))
891                 return priv->hw_params.bcast_sta_id;
892
893         switch (priv->iw_mode) {
894
895         /* If we are a client station in a BSS network, use the special
896          * AP station entry (that's the only station we communicate with) */
897         case NL80211_IFTYPE_STATION:
898                 return IWL_AP_ID;
899
900         /* If we are an AP, then find the station, or use BCAST */
901         case NL80211_IFTYPE_AP:
902                 sta_id = iwl3945_hw_find_station(priv, hdr->addr1);
903                 if (sta_id != IWL_INVALID_STATION)
904                         return sta_id;
905                 return priv->hw_params.bcast_sta_id;
906
907         /* If this frame is going out to an IBSS network, find the station,
908          * or create a new station table entry */
909         case NL80211_IFTYPE_ADHOC: {
910                 /* Create new station table entry */
911                 sta_id = iwl3945_hw_find_station(priv, hdr->addr1);
912                 if (sta_id != IWL_INVALID_STATION)
913                         return sta_id;
914
915                 sta_id = iwl3945_add_station(priv, hdr->addr1, 0, CMD_ASYNC);
916
917                 if (sta_id != IWL_INVALID_STATION)
918                         return sta_id;
919
920                 IWL_DEBUG_DROP(priv, "Station %pM not in station map. "
921                                "Defaulting to broadcast...\n",
922                                hdr->addr1);
923                 iwl_print_hex_dump(priv, IWL_DL_DROP, (u8 *) hdr, sizeof(*hdr));
924                 return priv->hw_params.bcast_sta_id;
925         }
926         /* If we are in monitor mode, use BCAST. This is required for
927          * packet injection. */
928         case NL80211_IFTYPE_MONITOR:
929                 return priv->hw_params.bcast_sta_id;
930
931         default:
932                 IWL_WARN(priv, "Unknown mode of operation: %d\n",
933                         priv->iw_mode);
934                 return priv->hw_params.bcast_sta_id;
935         }
936 }
937
938 /*
939  * start REPLY_TX command process
940  */
941 static int iwl3945_tx_skb(struct iwl_priv *priv, struct sk_buff *skb)
942 {
943         struct ieee80211_hdr *hdr = (struct ieee80211_hdr *)skb->data;
944         struct ieee80211_tx_info *info = IEEE80211_SKB_CB(skb);
945         struct iwl3945_tx_cmd *tx;
946         struct iwl_tx_queue *txq = NULL;
947         struct iwl_queue *q = NULL;
948         struct iwl_cmd *out_cmd = NULL;
949         dma_addr_t phys_addr;
950         dma_addr_t txcmd_phys;
951         int txq_id = skb_get_queue_mapping(skb);
952         u16 len, idx, len_org, hdr_len;
953         u8 id;
954         u8 unicast;
955         u8 sta_id;
956         u8 tid = 0;
957         u16 seq_number = 0;
958         __le16 fc;
959         u8 wait_write_ptr = 0;
960         u8 *qc = NULL;
961         unsigned long flags;
962         int rc;
963
964         spin_lock_irqsave(&priv->lock, flags);
965         if (iwl_is_rfkill(priv)) {
966                 IWL_DEBUG_DROP(priv, "Dropping - RF KILL\n");
967                 goto drop_unlock;
968         }
969
970         if ((ieee80211_get_tx_rate(priv->hw, info)->hw_value & 0xFF) == IWL_INVALID_RATE) {
971                 IWL_ERR(priv, "ERROR: No TX rate available.\n");
972                 goto drop_unlock;
973         }
974
975         unicast = !is_multicast_ether_addr(hdr->addr1);
976         id = 0;
977
978         fc = hdr->frame_control;
979
980 #ifdef CONFIG_IWLWIFI_DEBUG
981         if (ieee80211_is_auth(fc))
982                 IWL_DEBUG_TX(priv, "Sending AUTH frame\n");
983         else if (ieee80211_is_assoc_req(fc))
984                 IWL_DEBUG_TX(priv, "Sending ASSOC frame\n");
985         else if (ieee80211_is_reassoc_req(fc))
986                 IWL_DEBUG_TX(priv, "Sending REASSOC frame\n");
987 #endif
988
989         /* drop all data frame if we are not associated */
990         if (ieee80211_is_data(fc) &&
991             (priv->iw_mode != NL80211_IFTYPE_MONITOR) && /* packet injection */
992             (!iwl_is_associated(priv) ||
993              ((priv->iw_mode == NL80211_IFTYPE_STATION) && !priv->assoc_id))) {
994                 IWL_DEBUG_DROP(priv, "Dropping - !iwl_is_associated\n");
995                 goto drop_unlock;
996         }
997
998         spin_unlock_irqrestore(&priv->lock, flags);
999
1000         hdr_len = ieee80211_hdrlen(fc);
1001
1002         /* Find (or create) index into station table for destination station */
1003         sta_id = iwl3945_get_sta_id(priv, hdr);
1004         if (sta_id == IWL_INVALID_STATION) {
1005                 IWL_DEBUG_DROP(priv, "Dropping - INVALID STATION: %pM\n",
1006                                hdr->addr1);
1007                 goto drop;
1008         }
1009
1010         IWL_DEBUG_RATE(priv, "station Id %d\n", sta_id);
1011
1012         if (ieee80211_is_data_qos(fc)) {
1013                 qc = ieee80211_get_qos_ctl(hdr);
1014                 tid = qc[0] & IEEE80211_QOS_CTL_TID_MASK;
1015                 seq_number = priv->stations_39[sta_id].tid[tid].seq_number &
1016                                 IEEE80211_SCTL_SEQ;
1017                 hdr->seq_ctrl = cpu_to_le16(seq_number) |
1018                         (hdr->seq_ctrl &
1019                                 cpu_to_le16(IEEE80211_SCTL_FRAG));
1020                 seq_number += 0x10;
1021         }
1022
1023         /* Descriptor for chosen Tx queue */
1024         txq = &priv->txq[txq_id];
1025         q = &txq->q;
1026
1027         spin_lock_irqsave(&priv->lock, flags);
1028
1029         idx = get_cmd_index(q, q->write_ptr, 0);
1030
1031         /* Set up driver data for this TFD */
1032         memset(&(txq->txb[q->write_ptr]), 0, sizeof(struct iwl_tx_info));
1033         txq->txb[q->write_ptr].skb[0] = skb;
1034
1035         /* Init first empty entry in queue's array of Tx/cmd buffers */
1036         out_cmd = txq->cmd[idx];
1037         tx = (struct iwl3945_tx_cmd *)out_cmd->cmd.payload;
1038         memset(&out_cmd->hdr, 0, sizeof(out_cmd->hdr));
1039         memset(tx, 0, sizeof(*tx));
1040
1041         /*
1042          * Set up the Tx-command (not MAC!) header.
1043          * Store the chosen Tx queue and TFD index within the sequence field;
1044          * after Tx, uCode's Tx response will return this value so driver can
1045          * locate the frame within the tx queue and do post-tx processing.
1046          */
1047         out_cmd->hdr.cmd = REPLY_TX;
1048         out_cmd->hdr.sequence = cpu_to_le16((u16)(QUEUE_TO_SEQ(txq_id) |
1049                                 INDEX_TO_SEQ(q->write_ptr)));
1050
1051         /* Copy MAC header from skb into command buffer */
1052         memcpy(tx->hdr, hdr, hdr_len);
1053
1054         /*
1055          * Use the first empty entry in this queue's command buffer array
1056          * to contain the Tx command and MAC header concatenated together
1057          * (payload data will be in another buffer).
1058          * Size of this varies, due to varying MAC header length.
1059          * If end is not dword aligned, we'll have 2 extra bytes at the end
1060          * of the MAC header (device reads on dword boundaries).
1061          * We'll tell device about this padding later.
1062          */
1063         len = sizeof(struct iwl3945_tx_cmd) +
1064                         sizeof(struct iwl_cmd_header) + hdr_len;
1065
1066         len_org = len;
1067         len = (len + 3) & ~3;
1068
1069         if (len_org != len)
1070                 len_org = 1;
1071         else
1072                 len_org = 0;
1073
1074         /* Physical address of this Tx command's header (not MAC header!),
1075          * within command buffer array. */
1076         txcmd_phys = pci_map_single(priv->pci_dev,
1077                                     out_cmd, sizeof(struct iwl_cmd),
1078                                     PCI_DMA_TODEVICE);
1079         pci_unmap_addr_set(&out_cmd->meta, mapping, txcmd_phys);
1080         pci_unmap_len_set(&out_cmd->meta, len, sizeof(struct iwl_cmd));
1081         /* Add buffer containing Tx command and MAC(!) header to TFD's
1082          * first entry */
1083         txcmd_phys += offsetof(struct iwl_cmd, hdr);
1084
1085         /* Add buffer containing Tx command and MAC(!) header to TFD's
1086          * first entry */
1087         priv->cfg->ops->lib->txq_attach_buf_to_tfd(priv, txq,
1088                                                    txcmd_phys, len, 1, 0);
1089
1090         if (info->control.hw_key)
1091                 iwl3945_build_tx_cmd_hwcrypto(priv, info, out_cmd, skb, 0);
1092
1093         /* Set up TFD's 2nd entry to point directly to remainder of skb,
1094          * if any (802.11 null frames have no payload). */
1095         len = skb->len - hdr_len;
1096         if (len) {
1097                 phys_addr = pci_map_single(priv->pci_dev, skb->data + hdr_len,
1098                                            len, PCI_DMA_TODEVICE);
1099                 priv->cfg->ops->lib->txq_attach_buf_to_tfd(priv, txq,
1100                                                            phys_addr, len,
1101                                                            0, U32_PAD(len));
1102         }
1103
1104         /* Total # bytes to be transmitted */
1105         len = (u16)skb->len;
1106         tx->len = cpu_to_le16(len);
1107
1108         /* TODO need this for burst mode later on */
1109         iwl3945_build_tx_cmd_basic(priv, out_cmd, info, hdr, sta_id);
1110
1111         /* set is_hcca to 0; it probably will never be implemented */
1112         iwl3945_hw_build_tx_cmd_rate(priv, out_cmd, info, hdr, sta_id, 0);
1113
1114         tx->tx_flags &= ~TX_CMD_FLG_ANT_A_MSK;
1115         tx->tx_flags &= ~TX_CMD_FLG_ANT_B_MSK;
1116
1117         if (!ieee80211_has_morefrags(hdr->frame_control)) {
1118                 txq->need_update = 1;
1119                 if (qc)
1120                         priv->stations_39[sta_id].tid[tid].seq_number = seq_number;
1121         } else {
1122                 wait_write_ptr = 1;
1123                 txq->need_update = 0;
1124         }
1125
1126         iwl_print_hex_dump(priv, IWL_DL_TX, tx, sizeof(*tx));
1127
1128         iwl_print_hex_dump(priv, IWL_DL_TX, (u8 *)tx->hdr,
1129                            ieee80211_hdrlen(fc));
1130
1131         /* Tell device the write index *just past* this latest filled TFD */
1132         q->write_ptr = iwl_queue_inc_wrap(q->write_ptr, q->n_bd);
1133         rc = iwl_txq_update_write_ptr(priv, txq);
1134         spin_unlock_irqrestore(&priv->lock, flags);
1135
1136         if (rc)
1137                 return rc;
1138
1139         if ((iwl_queue_space(q) < q->high_mark)
1140             && priv->mac80211_registered) {
1141                 if (wait_write_ptr) {
1142                         spin_lock_irqsave(&priv->lock, flags);
1143                         txq->need_update = 1;
1144                         iwl_txq_update_write_ptr(priv, txq);
1145                         spin_unlock_irqrestore(&priv->lock, flags);
1146                 }
1147
1148                 ieee80211_stop_queue(priv->hw, skb_get_queue_mapping(skb));
1149         }
1150
1151         return 0;
1152
1153 drop_unlock:
1154         spin_unlock_irqrestore(&priv->lock, flags);
1155 drop:
1156         return -1;
1157 }
1158
1159 #ifdef CONFIG_IWL3945_SPECTRUM_MEASUREMENT
1160
1161 #include "iwl-spectrum.h"
1162
1163 #define BEACON_TIME_MASK_LOW    0x00FFFFFF
1164 #define BEACON_TIME_MASK_HIGH   0xFF000000
1165 #define TIME_UNIT               1024
1166
1167 /*
1168  * extended beacon time format
1169  * time in usec will be changed into a 32-bit value in 8:24 format
1170  * the high 1 byte is the beacon counts
1171  * the lower 3 bytes is the time in usec within one beacon interval
1172  */
1173
1174 static u32 iwl3945_usecs_to_beacons(u32 usec, u32 beacon_interval)
1175 {
1176         u32 quot;
1177         u32 rem;
1178         u32 interval = beacon_interval * 1024;
1179
1180         if (!interval || !usec)
1181                 return 0;
1182
1183         quot = (usec / interval) & (BEACON_TIME_MASK_HIGH >> 24);
1184         rem = (usec % interval) & BEACON_TIME_MASK_LOW;
1185
1186         return (quot << 24) + rem;
1187 }
1188
1189 /* base is usually what we get from ucode with each received frame,
1190  * the same as HW timer counter counting down
1191  */
1192
1193 static __le32 iwl3945_add_beacon_time(u32 base, u32 addon, u32 beacon_interval)
1194 {
1195         u32 base_low = base & BEACON_TIME_MASK_LOW;
1196         u32 addon_low = addon & BEACON_TIME_MASK_LOW;
1197         u32 interval = beacon_interval * TIME_UNIT;
1198         u32 res = (base & BEACON_TIME_MASK_HIGH) +
1199             (addon & BEACON_TIME_MASK_HIGH);
1200
1201         if (base_low > addon_low)
1202                 res += base_low - addon_low;
1203         else if (base_low < addon_low) {
1204                 res += interval + base_low - addon_low;
1205                 res += (1 << 24);
1206         } else
1207                 res += (1 << 24);
1208
1209         return cpu_to_le32(res);
1210 }
1211
1212 static int iwl3945_get_measurement(struct iwl_priv *priv,
1213                                struct ieee80211_measurement_params *params,
1214                                u8 type)
1215 {
1216         struct iwl_spectrum_cmd spectrum;
1217         struct iwl_rx_packet *res;
1218         struct iwl_host_cmd cmd = {
1219                 .id = REPLY_SPECTRUM_MEASUREMENT_CMD,
1220                 .data = (void *)&spectrum,
1221                 .meta.flags = CMD_WANT_SKB,
1222         };
1223         u32 add_time = le64_to_cpu(params->start_time);
1224         int rc;
1225         int spectrum_resp_status;
1226         int duration = le16_to_cpu(params->duration);
1227
1228         if (iwl_is_associated(priv))
1229                 add_time =
1230                     iwl3945_usecs_to_beacons(
1231                         le64_to_cpu(params->start_time) - priv->last_tsf,
1232                         le16_to_cpu(priv->rxon_timing.beacon_interval));
1233
1234         memset(&spectrum, 0, sizeof(spectrum));
1235
1236         spectrum.channel_count = cpu_to_le16(1);
1237         spectrum.flags =
1238             RXON_FLG_TSF2HOST_MSK | RXON_FLG_ANT_A_MSK | RXON_FLG_DIS_DIV_MSK;
1239         spectrum.filter_flags = MEASUREMENT_FILTER_FLAG;
1240         cmd.len = sizeof(spectrum);
1241         spectrum.len = cpu_to_le16(cmd.len - sizeof(spectrum.len));
1242
1243         if (iwl_is_associated(priv))
1244                 spectrum.start_time =
1245                     iwl3945_add_beacon_time(priv->last_beacon_time,
1246                                 add_time,
1247                                 le16_to_cpu(priv->rxon_timing.beacon_interval));
1248         else
1249                 spectrum.start_time = 0;
1250
1251         spectrum.channels[0].duration = cpu_to_le32(duration * TIME_UNIT);
1252         spectrum.channels[0].channel = params->channel;
1253         spectrum.channels[0].type = type;
1254         if (priv->active_rxon.flags & RXON_FLG_BAND_24G_MSK)
1255                 spectrum.flags |= RXON_FLG_BAND_24G_MSK |
1256                     RXON_FLG_AUTO_DETECT_MSK | RXON_FLG_TGG_PROTECT_MSK;
1257
1258         rc = iwl_send_cmd_sync(priv, &cmd);
1259         if (rc)
1260                 return rc;
1261
1262         res = (struct iwl_rx_packet *)cmd.meta.u.skb->data;
1263         if (res->hdr.flags & IWL_CMD_FAILED_MSK) {
1264                 IWL_ERR(priv, "Bad return from REPLY_RX_ON_ASSOC command\n");
1265                 rc = -EIO;
1266         }
1267
1268         spectrum_resp_status = le16_to_cpu(res->u.spectrum.status);
1269         switch (spectrum_resp_status) {
1270         case 0:         /* Command will be handled */
1271                 if (res->u.spectrum.id != 0xff) {
1272                         IWL_DEBUG_INFO(priv, "Replaced existing measurement: %d\n",
1273                                                 res->u.spectrum.id);
1274                         priv->measurement_status &= ~MEASUREMENT_READY;
1275                 }
1276                 priv->measurement_status |= MEASUREMENT_ACTIVE;
1277                 rc = 0;
1278                 break;
1279
1280         case 1:         /* Command will not be handled */
1281                 rc = -EAGAIN;
1282                 break;
1283         }
1284
1285         dev_kfree_skb_any(cmd.meta.u.skb);
1286
1287         return rc;
1288 }
1289 #endif
1290
1291 static void iwl3945_rx_reply_alive(struct iwl_priv *priv,
1292                                struct iwl_rx_mem_buffer *rxb)
1293 {
1294         struct iwl_rx_packet *pkt = (void *)rxb->skb->data;
1295         struct iwl_alive_resp *palive;
1296         struct delayed_work *pwork;
1297
1298         palive = &pkt->u.alive_frame;
1299
1300         IWL_DEBUG_INFO(priv, "Alive ucode status 0x%08X revision "
1301                        "0x%01X 0x%01X\n",
1302                        palive->is_valid, palive->ver_type,
1303                        palive->ver_subtype);
1304
1305         if (palive->ver_subtype == INITIALIZE_SUBTYPE) {
1306                 IWL_DEBUG_INFO(priv, "Initialization Alive received.\n");
1307                 memcpy(&priv->card_alive_init, &pkt->u.alive_frame,
1308                        sizeof(struct iwl_alive_resp));
1309                 pwork = &priv->init_alive_start;
1310         } else {
1311                 IWL_DEBUG_INFO(priv, "Runtime Alive received.\n");
1312                 memcpy(&priv->card_alive, &pkt->u.alive_frame,
1313                        sizeof(struct iwl_alive_resp));
1314                 pwork = &priv->alive_start;
1315                 iwl3945_disable_events(priv);
1316         }
1317
1318         /* We delay the ALIVE response by 5ms to
1319          * give the HW RF Kill time to activate... */
1320         if (palive->is_valid == UCODE_VALID_OK)
1321                 queue_delayed_work(priv->workqueue, pwork,
1322                                    msecs_to_jiffies(5));
1323         else
1324                 IWL_WARN(priv, "uCode did not respond OK.\n");
1325 }
1326
1327 static void iwl3945_rx_reply_add_sta(struct iwl_priv *priv,
1328                                  struct iwl_rx_mem_buffer *rxb)
1329 {
1330 #ifdef CONFIG_IWLWIFI_DEBUG
1331         struct iwl_rx_packet *pkt = (void *)rxb->skb->data;
1332 #endif
1333
1334         IWL_DEBUG_RX(priv, "Received REPLY_ADD_STA: 0x%02X\n", pkt->u.status);
1335         return;
1336 }
1337
1338 static void iwl3945_bg_beacon_update(struct work_struct *work)
1339 {
1340         struct iwl_priv *priv =
1341                 container_of(work, struct iwl_priv, beacon_update);
1342         struct sk_buff *beacon;
1343
1344         /* Pull updated AP beacon from mac80211. will fail if not in AP mode */
1345         beacon = ieee80211_beacon_get(priv->hw, priv->vif);
1346
1347         if (!beacon) {
1348                 IWL_ERR(priv, "update beacon failed\n");
1349                 return;
1350         }
1351
1352         mutex_lock(&priv->mutex);
1353         /* new beacon skb is allocated every time; dispose previous.*/
1354         if (priv->ibss_beacon)
1355                 dev_kfree_skb(priv->ibss_beacon);
1356
1357         priv->ibss_beacon = beacon;
1358         mutex_unlock(&priv->mutex);
1359
1360         iwl3945_send_beacon_cmd(priv);
1361 }
1362
1363 static void iwl3945_rx_beacon_notif(struct iwl_priv *priv,
1364                                 struct iwl_rx_mem_buffer *rxb)
1365 {
1366 #ifdef CONFIG_IWLWIFI_DEBUG
1367         struct iwl_rx_packet *pkt = (void *)rxb->skb->data;
1368         struct iwl3945_beacon_notif *beacon = &(pkt->u.beacon_status);
1369         u8 rate = beacon->beacon_notify_hdr.rate;
1370
1371         IWL_DEBUG_RX(priv, "beacon status %x retries %d iss %d "
1372                 "tsf %d %d rate %d\n",
1373                 le32_to_cpu(beacon->beacon_notify_hdr.status) & TX_STATUS_MSK,
1374                 beacon->beacon_notify_hdr.failure_frame,
1375                 le32_to_cpu(beacon->ibss_mgr_status),
1376                 le32_to_cpu(beacon->high_tsf),
1377                 le32_to_cpu(beacon->low_tsf), rate);
1378 #endif
1379
1380         if ((priv->iw_mode == NL80211_IFTYPE_AP) &&
1381             (!test_bit(STATUS_EXIT_PENDING, &priv->status)))
1382                 queue_work(priv->workqueue, &priv->beacon_update);
1383 }
1384
1385 /* Handle notification from uCode that card's power state is changing
1386  * due to software, hardware, or critical temperature RFKILL */
1387 static void iwl3945_rx_card_state_notif(struct iwl_priv *priv,
1388                                     struct iwl_rx_mem_buffer *rxb)
1389 {
1390         struct iwl_rx_packet *pkt = (void *)rxb->skb->data;
1391         u32 flags = le32_to_cpu(pkt->u.card_state_notif.flags);
1392         unsigned long status = priv->status;
1393
1394         IWL_DEBUG_RF_KILL(priv, "Card state received: HW:%s SW:%s\n",
1395                           (flags & HW_CARD_DISABLED) ? "Kill" : "On",
1396                           (flags & SW_CARD_DISABLED) ? "Kill" : "On");
1397
1398         iwl_write32(priv, CSR_UCODE_DRV_GP1_SET,
1399                     CSR_UCODE_DRV_GP1_BIT_CMD_BLOCKED);
1400
1401         if (flags & HW_CARD_DISABLED)
1402                 set_bit(STATUS_RF_KILL_HW, &priv->status);
1403         else
1404                 clear_bit(STATUS_RF_KILL_HW, &priv->status);
1405
1406
1407         if (flags & SW_CARD_DISABLED)
1408                 set_bit(STATUS_RF_KILL_SW, &priv->status);
1409         else
1410                 clear_bit(STATUS_RF_KILL_SW, &priv->status);
1411
1412         iwl_scan_cancel(priv);
1413
1414         if ((test_bit(STATUS_RF_KILL_HW, &status) !=
1415              test_bit(STATUS_RF_KILL_HW, &priv->status)) ||
1416             (test_bit(STATUS_RF_KILL_SW, &status) !=
1417              test_bit(STATUS_RF_KILL_SW, &priv->status)))
1418                 queue_work(priv->workqueue, &priv->rf_kill);
1419         else
1420                 wake_up_interruptible(&priv->wait_command_queue);
1421 }
1422
1423 /**
1424  * iwl3945_setup_rx_handlers - Initialize Rx handler callbacks
1425  *
1426  * Setup the RX handlers for each of the reply types sent from the uCode
1427  * to the host.
1428  *
1429  * This function chains into the hardware specific files for them to setup
1430  * any hardware specific handlers as well.
1431  */
1432 static void iwl3945_setup_rx_handlers(struct iwl_priv *priv)
1433 {
1434         priv->rx_handlers[REPLY_ALIVE] = iwl3945_rx_reply_alive;
1435         priv->rx_handlers[REPLY_ADD_STA] = iwl3945_rx_reply_add_sta;
1436         priv->rx_handlers[REPLY_ERROR] = iwl_rx_reply_error;
1437         priv->rx_handlers[CHANNEL_SWITCH_NOTIFICATION] = iwl_rx_csa;
1438         priv->rx_handlers[PM_SLEEP_NOTIFICATION] = iwl_rx_pm_sleep_notif;
1439         priv->rx_handlers[PM_DEBUG_STATISTIC_NOTIFIC] =
1440             iwl_rx_pm_debug_statistics_notif;
1441         priv->rx_handlers[BEACON_NOTIFICATION] = iwl3945_rx_beacon_notif;
1442
1443         /*
1444          * The same handler is used for both the REPLY to a discrete
1445          * statistics request from the host as well as for the periodic
1446          * statistics notifications (after received beacons) from the uCode.
1447          */
1448         priv->rx_handlers[REPLY_STATISTICS_CMD] = iwl3945_hw_rx_statistics;
1449         priv->rx_handlers[STATISTICS_NOTIFICATION] = iwl3945_hw_rx_statistics;
1450
1451         iwl_setup_spectrum_handlers(priv);
1452         iwl_setup_rx_scan_handlers(priv);
1453         priv->rx_handlers[CARD_STATE_NOTIFICATION] = iwl3945_rx_card_state_notif;
1454
1455         /* Set up hardware specific Rx handlers */
1456         iwl3945_hw_rx_handler_setup(priv);
1457 }
1458
1459 /**
1460  * iwl3945_cmd_queue_reclaim - Reclaim CMD queue entries
1461  * When FW advances 'R' index, all entries between old and new 'R' index
1462  * need to be reclaimed.
1463  */
1464 static void iwl3945_cmd_queue_reclaim(struct iwl_priv *priv,
1465                                       int txq_id, int index)
1466 {
1467         struct iwl_tx_queue *txq = &priv->txq[txq_id];
1468         struct iwl_queue *q = &txq->q;
1469         int nfreed = 0;
1470
1471         if ((index >= q->n_bd) || (iwl_queue_used(q, index) == 0)) {
1472                 IWL_ERR(priv, "Read index for DMA queue txq id (%d), index %d, "
1473                           "is out of range [0-%d] %d %d.\n", txq_id,
1474                           index, q->n_bd, q->write_ptr, q->read_ptr);
1475                 return;
1476         }
1477
1478         for (index = iwl_queue_inc_wrap(index, q->n_bd); q->read_ptr != index;
1479                 q->read_ptr = iwl_queue_inc_wrap(q->read_ptr, q->n_bd)) {
1480                 if (nfreed > 1) {
1481                         IWL_ERR(priv, "HCMD skipped: index (%d) %d %d\n", index,
1482                                         q->write_ptr, q->read_ptr);
1483                         queue_work(priv->workqueue, &priv->restart);
1484                         break;
1485                 }
1486                 nfreed++;
1487         }
1488 }
1489
1490
1491 /**
1492  * iwl3945_tx_cmd_complete - Pull unused buffers off the queue and reclaim them
1493  * @rxb: Rx buffer to reclaim
1494  *
1495  * If an Rx buffer has an async callback associated with it the callback
1496  * will be executed.  The attached skb (if present) will only be freed
1497  * if the callback returns 1
1498  */
1499 static void iwl3945_tx_cmd_complete(struct iwl_priv *priv,
1500                                 struct iwl_rx_mem_buffer *rxb)
1501 {
1502         struct iwl_rx_packet *pkt = (struct iwl_rx_packet *)rxb->skb->data;
1503         u16 sequence = le16_to_cpu(pkt->hdr.sequence);
1504         int txq_id = SEQ_TO_QUEUE(sequence);
1505         int index = SEQ_TO_INDEX(sequence);
1506         int huge =  !!(pkt->hdr.sequence & SEQ_HUGE_FRAME);
1507         int cmd_index;
1508         struct iwl_cmd *cmd;
1509
1510         if (WARN(txq_id != IWL_CMD_QUEUE_NUM,
1511                  "wrong command queue %d, sequence 0x%X readp=%d writep=%d\n",
1512                   txq_id, sequence,
1513                   priv->txq[IWL_CMD_QUEUE_NUM].q.read_ptr,
1514                   priv->txq[IWL_CMD_QUEUE_NUM].q.write_ptr)) {
1515                 iwl_print_hex_dump(priv, IWL_DL_INFO , rxb, 32);
1516                 return;
1517         }
1518
1519         cmd_index = get_cmd_index(&priv->txq[IWL_CMD_QUEUE_NUM].q, index, huge);
1520         cmd = priv->txq[IWL_CMD_QUEUE_NUM].cmd[cmd_index];
1521
1522         /* Input error checking is done when commands are added to queue. */
1523         if (cmd->meta.flags & CMD_WANT_SKB) {
1524                 cmd->meta.source->u.skb = rxb->skb;
1525                 rxb->skb = NULL;
1526         } else if (cmd->meta.u.callback &&
1527                    !cmd->meta.u.callback(priv, cmd, rxb->skb))
1528                 rxb->skb = NULL;
1529
1530         iwl3945_cmd_queue_reclaim(priv, txq_id, index);
1531
1532         if (!(cmd->meta.flags & CMD_ASYNC)) {
1533                 clear_bit(STATUS_HCMD_ACTIVE, &priv->status);
1534                 wake_up_interruptible(&priv->wait_command_queue);
1535         }
1536 }
1537
1538 /************************** RX-FUNCTIONS ****************************/
1539 /*
1540  * Rx theory of operation
1541  *
1542  * The host allocates 32 DMA target addresses and passes the host address
1543  * to the firmware at register IWL_RFDS_TABLE_LOWER + N * RFD_SIZE where N is
1544  * 0 to 31
1545  *
1546  * Rx Queue Indexes
1547  * The host/firmware share two index registers for managing the Rx buffers.
1548  *
1549  * The READ index maps to the first position that the firmware may be writing
1550  * to -- the driver can read up to (but not including) this position and get
1551  * good data.
1552  * The READ index is managed by the firmware once the card is enabled.
1553  *
1554  * The WRITE index maps to the last position the driver has read from -- the
1555  * position preceding WRITE is the last slot the firmware can place a packet.
1556  *
1557  * The queue is empty (no good data) if WRITE = READ - 1, and is full if
1558  * WRITE = READ.
1559  *
1560  * During initialization, the host sets up the READ queue position to the first
1561  * INDEX position, and WRITE to the last (READ - 1 wrapped)
1562  *
1563  * When the firmware places a packet in a buffer, it will advance the READ index
1564  * and fire the RX interrupt.  The driver can then query the READ index and
1565  * process as many packets as possible, moving the WRITE index forward as it
1566  * resets the Rx queue buffers with new memory.
1567  *
1568  * The management in the driver is as follows:
1569  * + A list of pre-allocated SKBs is stored in iwl->rxq->rx_free.  When
1570  *   iwl->rxq->free_count drops to or below RX_LOW_WATERMARK, work is scheduled
1571  *   to replenish the iwl->rxq->rx_free.
1572  * + In iwl3945_rx_replenish (scheduled) if 'processed' != 'read' then the
1573  *   iwl->rxq is replenished and the READ INDEX is updated (updating the
1574  *   'processed' and 'read' driver indexes as well)
1575  * + A received packet is processed and handed to the kernel network stack,
1576  *   detached from the iwl->rxq.  The driver 'processed' index is updated.
1577  * + The Host/Firmware iwl->rxq is replenished at tasklet time from the rx_free
1578  *   list. If there are no allocated buffers in iwl->rxq->rx_free, the READ
1579  *   INDEX is not incremented and iwl->status(RX_STALLED) is set.  If there
1580  *   were enough free buffers and RX_STALLED is set it is cleared.
1581  *
1582  *
1583  * Driver sequence:
1584  *
1585  * iwl3945_rx_replenish()     Replenishes rx_free list from rx_used, and calls
1586  *                            iwl3945_rx_queue_restock
1587  * iwl3945_rx_queue_restock() Moves available buffers from rx_free into Rx
1588  *                            queue, updates firmware pointers, and updates
1589  *                            the WRITE index.  If insufficient rx_free buffers
1590  *                            are available, schedules iwl3945_rx_replenish
1591  *
1592  * -- enable interrupts --
1593  * ISR - iwl3945_rx()         Detach iwl_rx_mem_buffers from pool up to the
1594  *                            READ INDEX, detaching the SKB from the pool.
1595  *                            Moves the packet buffer from queue to rx_used.
1596  *                            Calls iwl3945_rx_queue_restock to refill any empty
1597  *                            slots.
1598  * ...
1599  *
1600  */
1601
1602 /**
1603  * iwl3945_dma_addr2rbd_ptr - convert a DMA address to a uCode read buffer ptr
1604  */
1605 static inline __le32 iwl3945_dma_addr2rbd_ptr(struct iwl_priv *priv,
1606                                           dma_addr_t dma_addr)
1607 {
1608         return cpu_to_le32((u32)dma_addr);
1609 }
1610
1611 /**
1612  * iwl3945_rx_queue_restock - refill RX queue from pre-allocated pool
1613  *
1614  * If there are slots in the RX queue that need to be restocked,
1615  * and we have free pre-allocated buffers, fill the ranks as much
1616  * as we can, pulling from rx_free.
1617  *
1618  * This moves the 'write' index forward to catch up with 'processed', and
1619  * also updates the memory address in the firmware to reference the new
1620  * target buffer.
1621  */
1622 static int iwl3945_rx_queue_restock(struct iwl_priv *priv)
1623 {
1624         struct iwl_rx_queue *rxq = &priv->rxq;
1625         struct list_head *element;
1626         struct iwl_rx_mem_buffer *rxb;
1627         unsigned long flags;
1628         int write, rc;
1629
1630         spin_lock_irqsave(&rxq->lock, flags);
1631         write = rxq->write & ~0x7;
1632         while ((iwl_rx_queue_space(rxq) > 0) && (rxq->free_count)) {
1633                 /* Get next free Rx buffer, remove from free list */
1634                 element = rxq->rx_free.next;
1635                 rxb = list_entry(element, struct iwl_rx_mem_buffer, list);
1636                 list_del(element);
1637
1638                 /* Point to Rx buffer via next RBD in circular buffer */
1639                 rxq->bd[rxq->write] = iwl3945_dma_addr2rbd_ptr(priv, rxb->real_dma_addr);
1640                 rxq->queue[rxq->write] = rxb;
1641                 rxq->write = (rxq->write + 1) & RX_QUEUE_MASK;
1642                 rxq->free_count--;
1643         }
1644         spin_unlock_irqrestore(&rxq->lock, flags);
1645         /* If the pre-allocated buffer pool is dropping low, schedule to
1646          * refill it */
1647         if (rxq->free_count <= RX_LOW_WATERMARK)
1648                 queue_work(priv->workqueue, &priv->rx_replenish);
1649
1650
1651         /* If we've added more space for the firmware to place data, tell it.
1652          * Increment device's write pointer in multiples of 8. */
1653         if ((write != (rxq->write & ~0x7))
1654             || (abs(rxq->write - rxq->read) > 7)) {
1655                 spin_lock_irqsave(&rxq->lock, flags);
1656                 rxq->need_update = 1;
1657                 spin_unlock_irqrestore(&rxq->lock, flags);
1658                 rc = iwl_rx_queue_update_write_ptr(priv, rxq);
1659                 if (rc)
1660                         return rc;
1661         }
1662
1663         return 0;
1664 }
1665
1666 /**
1667  * iwl3945_rx_replenish - Move all used packet from rx_used to rx_free
1668  *
1669  * When moving to rx_free an SKB is allocated for the slot.
1670  *
1671  * Also restock the Rx queue via iwl3945_rx_queue_restock.
1672  * This is called as a scheduled work item (except for during initialization)
1673  */
1674 static void iwl3945_rx_allocate(struct iwl_priv *priv)
1675 {
1676         struct iwl_rx_queue *rxq = &priv->rxq;
1677         struct list_head *element;
1678         struct iwl_rx_mem_buffer *rxb;
1679         unsigned long flags;
1680         spin_lock_irqsave(&rxq->lock, flags);
1681         while (!list_empty(&rxq->rx_used)) {
1682                 element = rxq->rx_used.next;
1683                 rxb = list_entry(element, struct iwl_rx_mem_buffer, list);
1684
1685                 /* Alloc a new receive buffer */
1686                 rxb->skb =
1687                     alloc_skb(priv->hw_params.rx_buf_size,
1688                                 __GFP_NOWARN | GFP_ATOMIC);
1689                 if (!rxb->skb) {
1690                         if (net_ratelimit())
1691                                 IWL_CRIT(priv, ": Can not allocate SKB buffers\n");
1692                         /* We don't reschedule replenish work here -- we will
1693                          * call the restock method and if it still needs
1694                          * more buffers it will schedule replenish */
1695                         break;
1696                 }
1697
1698                 /* If radiotap head is required, reserve some headroom here.
1699                  * The physical head count is a variable rx_stats->phy_count.
1700                  * We reserve 4 bytes here. Plus these extra bytes, the
1701                  * headroom of the physical head should be enough for the
1702                  * radiotap head that iwl3945 supported. See iwl3945_rt.
1703                  */
1704                 skb_reserve(rxb->skb, 4);
1705
1706                 priv->alloc_rxb_skb++;
1707                 list_del(element);
1708
1709                 /* Get physical address of RB/SKB */
1710                 rxb->real_dma_addr = pci_map_single(priv->pci_dev,
1711                                                 rxb->skb->data,
1712                                                 priv->hw_params.rx_buf_size,
1713                                                 PCI_DMA_FROMDEVICE);
1714                 list_add_tail(&rxb->list, &rxq->rx_free);
1715                 rxq->free_count++;
1716         }
1717         spin_unlock_irqrestore(&rxq->lock, flags);
1718 }
1719
1720 /*
1721  * this should be called while priv->lock is locked
1722  */
1723 static void __iwl3945_rx_replenish(void *data)
1724 {
1725         struct iwl_priv *priv = data;
1726
1727         iwl3945_rx_allocate(priv);
1728         iwl3945_rx_queue_restock(priv);
1729 }
1730
1731
1732 void iwl3945_rx_replenish(void *data)
1733 {
1734         struct iwl_priv *priv = data;
1735         unsigned long flags;
1736
1737         iwl3945_rx_allocate(priv);
1738
1739         spin_lock_irqsave(&priv->lock, flags);
1740         iwl3945_rx_queue_restock(priv);
1741         spin_unlock_irqrestore(&priv->lock, flags);
1742 }
1743
1744 /* Convert linear signal-to-noise ratio into dB */
1745 static u8 ratio2dB[100] = {
1746 /*       0   1   2   3   4   5   6   7   8   9 */
1747          0,  0,  6, 10, 12, 14, 16, 17, 18, 19, /* 00 - 09 */
1748         20, 21, 22, 22, 23, 23, 24, 25, 26, 26, /* 10 - 19 */
1749         26, 26, 26, 27, 27, 28, 28, 28, 29, 29, /* 20 - 29 */
1750         29, 30, 30, 30, 31, 31, 31, 31, 32, 32, /* 30 - 39 */
1751         32, 32, 32, 33, 33, 33, 33, 33, 34, 34, /* 40 - 49 */
1752         34, 34, 34, 34, 35, 35, 35, 35, 35, 35, /* 50 - 59 */
1753         36, 36, 36, 36, 36, 36, 36, 37, 37, 37, /* 60 - 69 */
1754         37, 37, 37, 37, 37, 38, 38, 38, 38, 38, /* 70 - 79 */
1755         38, 38, 38, 38, 38, 39, 39, 39, 39, 39, /* 80 - 89 */
1756         39, 39, 39, 39, 39, 40, 40, 40, 40, 40  /* 90 - 99 */
1757 };
1758
1759 /* Calculates a relative dB value from a ratio of linear
1760  *   (i.e. not dB) signal levels.
1761  * Conversion assumes that levels are voltages (20*log), not powers (10*log). */
1762 int iwl3945_calc_db_from_ratio(int sig_ratio)
1763 {
1764         /* 1000:1 or higher just report as 60 dB */
1765         if (sig_ratio >= 1000)
1766                 return 60;
1767
1768         /* 100:1 or higher, divide by 10 and use table,
1769          *   add 20 dB to make up for divide by 10 */
1770         if (sig_ratio >= 100)
1771                 return 20 + (int)ratio2dB[sig_ratio/10];
1772
1773         /* We shouldn't see this */
1774         if (sig_ratio < 1)
1775                 return 0;
1776
1777         /* Use table for ratios 1:1 - 99:1 */
1778         return (int)ratio2dB[sig_ratio];
1779 }
1780
1781 #define PERFECT_RSSI (-20) /* dBm */
1782 #define WORST_RSSI (-95)   /* dBm */
1783 #define RSSI_RANGE (PERFECT_RSSI - WORST_RSSI)
1784
1785 /* Calculate an indication of rx signal quality (a percentage, not dBm!).
1786  * See http://www.ces.clemson.edu/linux/signal_quality.shtml for info
1787  *   about formulas used below. */
1788 int iwl3945_calc_sig_qual(int rssi_dbm, int noise_dbm)
1789 {
1790         int sig_qual;
1791         int degradation = PERFECT_RSSI - rssi_dbm;
1792
1793         /* If we get a noise measurement, use signal-to-noise ratio (SNR)
1794          * as indicator; formula is (signal dbm - noise dbm).
1795          * SNR at or above 40 is a great signal (100%).
1796          * Below that, scale to fit SNR of 0 - 40 dB within 0 - 100% indicator.
1797          * Weakest usable signal is usually 10 - 15 dB SNR. */
1798         if (noise_dbm) {
1799                 if (rssi_dbm - noise_dbm >= 40)
1800                         return 100;
1801                 else if (rssi_dbm < noise_dbm)
1802                         return 0;
1803                 sig_qual = ((rssi_dbm - noise_dbm) * 5) / 2;
1804
1805         /* Else use just the signal level.
1806          * This formula is a least squares fit of data points collected and
1807          *   compared with a reference system that had a percentage (%) display
1808          *   for signal quality. */
1809         } else
1810                 sig_qual = (100 * (RSSI_RANGE * RSSI_RANGE) - degradation *
1811                             (15 * RSSI_RANGE + 62 * degradation)) /
1812                            (RSSI_RANGE * RSSI_RANGE);
1813
1814         if (sig_qual > 100)
1815                 sig_qual = 100;
1816         else if (sig_qual < 1)
1817                 sig_qual = 0;
1818
1819         return sig_qual;
1820 }
1821
1822 /**
1823  * iwl3945_rx_handle - Main entry function for receiving responses from uCode
1824  *
1825  * Uses the priv->rx_handlers callback function array to invoke
1826  * the appropriate handlers, including command responses,
1827  * frame-received notifications, and other notifications.
1828  */
1829 static void iwl3945_rx_handle(struct iwl_priv *priv)
1830 {
1831         struct iwl_rx_mem_buffer *rxb;
1832         struct iwl_rx_packet *pkt;
1833         struct iwl_rx_queue *rxq = &priv->rxq;
1834         u32 r, i;
1835         int reclaim;
1836         unsigned long flags;
1837         u8 fill_rx = 0;
1838         u32 count = 8;
1839
1840         /* uCode's read index (stored in shared DRAM) indicates the last Rx
1841          * buffer that the driver may process (last buffer filled by ucode). */
1842         r = le16_to_cpu(rxq->rb_stts->closed_rb_num) &  0x0FFF;
1843         i = rxq->read;
1844
1845         if (iwl_rx_queue_space(rxq) > (RX_QUEUE_SIZE / 2))
1846                 fill_rx = 1;
1847         /* Rx interrupt, but nothing sent from uCode */
1848         if (i == r)
1849                 IWL_DEBUG(priv, IWL_DL_RX | IWL_DL_ISR, "r = %d, i = %d\n", r, i);
1850
1851         while (i != r) {
1852                 rxb = rxq->queue[i];
1853
1854                 /* If an RXB doesn't have a Rx queue slot associated with it,
1855                  * then a bug has been introduced in the queue refilling
1856                  * routines -- catch it here */
1857                 BUG_ON(rxb == NULL);
1858
1859                 rxq->queue[i] = NULL;
1860
1861                 pci_dma_sync_single_for_cpu(priv->pci_dev, rxb->real_dma_addr,
1862                                             priv->hw_params.rx_buf_size,
1863                                             PCI_DMA_FROMDEVICE);
1864                 pkt = (struct iwl_rx_packet *)rxb->skb->data;
1865
1866                 /* Reclaim a command buffer only if this packet is a response
1867                  *   to a (driver-originated) command.
1868                  * If the packet (e.g. Rx frame) originated from uCode,
1869                  *   there is no command buffer to reclaim.
1870                  * Ucode should set SEQ_RX_FRAME bit if ucode-originated,
1871                  *   but apparently a few don't get set; catch them here. */
1872                 reclaim = !(pkt->hdr.sequence & SEQ_RX_FRAME) &&
1873                         (pkt->hdr.cmd != STATISTICS_NOTIFICATION) &&
1874                         (pkt->hdr.cmd != REPLY_TX);
1875
1876                 /* Based on type of command response or notification,
1877                  *   handle those that need handling via function in
1878                  *   rx_handlers table.  See iwl3945_setup_rx_handlers() */
1879                 if (priv->rx_handlers[pkt->hdr.cmd]) {
1880                         IWL_DEBUG(priv, IWL_DL_HCMD | IWL_DL_RX | IWL_DL_ISR,
1881                                 "r = %d, i = %d, %s, 0x%02x\n", r, i,
1882                                 get_cmd_string(pkt->hdr.cmd), pkt->hdr.cmd);
1883                         priv->rx_handlers[pkt->hdr.cmd] (priv, rxb);
1884                 } else {
1885                         /* No handling needed */
1886                         IWL_DEBUG(priv, IWL_DL_HCMD | IWL_DL_RX | IWL_DL_ISR,
1887                                 "r %d i %d No handler needed for %s, 0x%02x\n",
1888                                 r, i, get_cmd_string(pkt->hdr.cmd),
1889                                 pkt->hdr.cmd);
1890                 }
1891
1892                 if (reclaim) {
1893                         /* Invoke any callbacks, transfer the skb to caller, and
1894                          * fire off the (possibly) blocking iwl_send_cmd()
1895                          * as we reclaim the driver command queue */
1896                         if (rxb && rxb->skb)
1897                                 iwl3945_tx_cmd_complete(priv, rxb);
1898                         else
1899                                 IWL_WARN(priv, "Claim null rxb?\n");
1900                 }
1901
1902                 /* For now we just don't re-use anything.  We can tweak this
1903                  * later to try and re-use notification packets and SKBs that
1904                  * fail to Rx correctly */
1905                 if (rxb->skb != NULL) {
1906                         priv->alloc_rxb_skb--;
1907                         dev_kfree_skb_any(rxb->skb);
1908                         rxb->skb = NULL;
1909                 }
1910
1911                 pci_unmap_single(priv->pci_dev, rxb->real_dma_addr,
1912                                 priv->hw_params.rx_buf_size,
1913                                 PCI_DMA_FROMDEVICE);
1914                 spin_lock_irqsave(&rxq->lock, flags);
1915                 list_add_tail(&rxb->list, &priv->rxq.rx_used);
1916                 spin_unlock_irqrestore(&rxq->lock, flags);
1917                 i = (i + 1) & RX_QUEUE_MASK;
1918                 /* If there are a lot of unused frames,
1919                  * restock the Rx queue so ucode won't assert. */
1920                 if (fill_rx) {
1921                         count++;
1922                         if (count >= 8) {
1923                                 priv->rxq.read = i;
1924                                 __iwl3945_rx_replenish(priv);
1925                                 count = 0;
1926                         }
1927                 }
1928         }
1929
1930         /* Backtrack one entry */
1931         priv->rxq.read = i;
1932         iwl3945_rx_queue_restock(priv);
1933 }
1934
1935 /* call this function to flush any scheduled tasklet */
1936 static inline void iwl_synchronize_irq(struct iwl_priv *priv)
1937 {
1938         /* wait to make sure we flush pending tasklet*/
1939         synchronize_irq(priv->pci_dev->irq);
1940         tasklet_kill(&priv->irq_tasklet);
1941 }
1942
1943 static const char *desc_lookup(int i)
1944 {
1945         switch (i) {
1946         case 1:
1947                 return "FAIL";
1948         case 2:
1949                 return "BAD_PARAM";
1950         case 3:
1951                 return "BAD_CHECKSUM";
1952         case 4:
1953                 return "NMI_INTERRUPT";
1954         case 5:
1955                 return "SYSASSERT";
1956         case 6:
1957                 return "FATAL_ERROR";
1958         }
1959
1960         return "UNKNOWN";
1961 }
1962
1963 #define ERROR_START_OFFSET  (1 * sizeof(u32))
1964 #define ERROR_ELEM_SIZE     (7 * sizeof(u32))
1965
1966 static void iwl3945_dump_nic_error_log(struct iwl_priv *priv)
1967 {
1968         u32 i;
1969         u32 desc, time, count, base, data1;
1970         u32 blink1, blink2, ilink1, ilink2;
1971         int rc;
1972
1973         base = le32_to_cpu(priv->card_alive.error_event_table_ptr);
1974
1975         if (!iwl3945_hw_valid_rtc_data_addr(base)) {
1976                 IWL_ERR(priv, "Not valid error log pointer 0x%08X\n", base);
1977                 return;
1978         }
1979
1980         rc = iwl_grab_nic_access(priv);
1981         if (rc) {
1982                 IWL_WARN(priv, "Can not read from adapter at this time.\n");
1983                 return;
1984         }
1985
1986         count = iwl_read_targ_mem(priv, base);
1987
1988         if (ERROR_START_OFFSET <= count * ERROR_ELEM_SIZE) {
1989                 IWL_ERR(priv, "Start IWL Error Log Dump:\n");
1990                 IWL_ERR(priv, "Status: 0x%08lX, count: %d\n",
1991                         priv->status, count);
1992         }
1993
1994         IWL_ERR(priv, "Desc       Time       asrtPC  blink2 "
1995                   "ilink1  nmiPC   Line\n");
1996         for (i = ERROR_START_OFFSET;
1997              i < (count * ERROR_ELEM_SIZE) + ERROR_START_OFFSET;
1998              i += ERROR_ELEM_SIZE) {
1999                 desc = iwl_read_targ_mem(priv, base + i);
2000                 time =
2001                     iwl_read_targ_mem(priv, base + i + 1 * sizeof(u32));
2002                 blink1 =
2003                     iwl_read_targ_mem(priv, base + i + 2 * sizeof(u32));
2004                 blink2 =
2005                     iwl_read_targ_mem(priv, base + i + 3 * sizeof(u32));
2006                 ilink1 =
2007                     iwl_read_targ_mem(priv, base + i + 4 * sizeof(u32));
2008                 ilink2 =
2009                     iwl_read_targ_mem(priv, base + i + 5 * sizeof(u32));
2010                 data1 =
2011                     iwl_read_targ_mem(priv, base + i + 6 * sizeof(u32));
2012
2013                 IWL_ERR(priv,
2014                         "%-13s (#%d) %010u 0x%05X 0x%05X 0x%05X 0x%05X %u\n\n",
2015                         desc_lookup(desc), desc, time, blink1, blink2,
2016                         ilink1, ilink2, data1);
2017         }
2018
2019         iwl_release_nic_access(priv);
2020
2021 }
2022
2023 #define EVENT_START_OFFSET  (6 * sizeof(u32))
2024
2025 /**
2026  * iwl3945_print_event_log - Dump error event log to syslog
2027  *
2028  * NOTE: Must be called with iwl_grab_nic_access() already obtained!
2029  */
2030 static void iwl3945_print_event_log(struct iwl_priv *priv, u32 start_idx,
2031                                 u32 num_events, u32 mode)
2032 {
2033         u32 i;
2034         u32 base;       /* SRAM byte address of event log header */
2035         u32 event_size; /* 2 u32s, or 3 u32s if timestamp recorded */
2036         u32 ptr;        /* SRAM byte address of log data */
2037         u32 ev, time, data; /* event log data */
2038
2039         if (num_events == 0)
2040                 return;
2041
2042         base = le32_to_cpu(priv->card_alive.log_event_table_ptr);
2043
2044         if (mode == 0)
2045                 event_size = 2 * sizeof(u32);
2046         else
2047                 event_size = 3 * sizeof(u32);
2048
2049         ptr = base + EVENT_START_OFFSET + (start_idx * event_size);
2050
2051         /* "time" is actually "data" for mode 0 (no timestamp).
2052          * place event id # at far right for easier visual parsing. */
2053         for (i = 0; i < num_events; i++) {
2054                 ev = iwl_read_targ_mem(priv, ptr);
2055                 ptr += sizeof(u32);
2056                 time = iwl_read_targ_mem(priv, ptr);
2057                 ptr += sizeof(u32);
2058                 if (mode == 0) {
2059                         /* data, ev */
2060                         IWL_ERR(priv, "0x%08x\t%04u\n", time, ev);
2061                 } else {
2062                         data = iwl_read_targ_mem(priv, ptr);
2063                         ptr += sizeof(u32);
2064                         IWL_ERR(priv, "%010u\t0x%08x\t%04u\n", time, data, ev);
2065                 }
2066         }
2067 }
2068
2069 static void iwl3945_dump_nic_event_log(struct iwl_priv *priv)
2070 {
2071         int rc;
2072         u32 base;       /* SRAM byte address of event log header */
2073         u32 capacity;   /* event log capacity in # entries */
2074         u32 mode;       /* 0 - no timestamp, 1 - timestamp recorded */
2075         u32 num_wraps;  /* # times uCode wrapped to top of log */
2076         u32 next_entry; /* index of next entry to be written by uCode */
2077         u32 size;       /* # entries that we'll print */
2078
2079         base = le32_to_cpu(priv->card_alive.log_event_table_ptr);
2080         if (!iwl3945_hw_valid_rtc_data_addr(base)) {
2081                 IWL_ERR(priv, "Invalid event log pointer 0x%08X\n", base);
2082                 return;
2083         }
2084
2085         rc = iwl_grab_nic_access(priv);
2086         if (rc) {
2087                 IWL_WARN(priv, "Can not read from adapter at this time.\n");
2088                 return;
2089         }
2090
2091         /* event log header */
2092         capacity = iwl_read_targ_mem(priv, base);
2093         mode = iwl_read_targ_mem(priv, base + (1 * sizeof(u32)));
2094         num_wraps = iwl_read_targ_mem(priv, base + (2 * sizeof(u32)));
2095         next_entry = iwl_read_targ_mem(priv, base + (3 * sizeof(u32)));
2096
2097         size = num_wraps ? capacity : next_entry;
2098
2099         /* bail out if nothing in log */
2100         if (size == 0) {
2101                 IWL_ERR(priv, "Start IWL Event Log Dump: nothing in log\n");
2102                 iwl_release_nic_access(priv);
2103                 return;
2104         }
2105
2106         IWL_ERR(priv, "Start IWL Event Log Dump: display count %d, wraps %d\n",
2107                   size, num_wraps);
2108
2109         /* if uCode has wrapped back to top of log, start at the oldest entry,
2110          * i.e the next one that uCode would fill. */
2111         if (num_wraps)
2112                 iwl3945_print_event_log(priv, next_entry,
2113                                     capacity - next_entry, mode);
2114
2115         /* (then/else) start at top of log */
2116         iwl3945_print_event_log(priv, 0, next_entry, mode);
2117
2118         iwl_release_nic_access(priv);
2119 }
2120
2121 static void iwl3945_error_recovery(struct iwl_priv *priv)
2122 {
2123         unsigned long flags;
2124
2125         memcpy(&priv->staging_rxon, &priv->recovery_rxon,
2126                sizeof(priv->staging_rxon));
2127         priv->staging_rxon.filter_flags &= ~RXON_FILTER_ASSOC_MSK;
2128         iwl3945_commit_rxon(priv);
2129
2130         iwl3945_add_station(priv, priv->bssid, 1, 0);
2131
2132         spin_lock_irqsave(&priv->lock, flags);
2133         priv->assoc_id = le16_to_cpu(priv->staging_rxon.assoc_id);
2134         priv->error_recovering = 0;
2135         spin_unlock_irqrestore(&priv->lock, flags);
2136 }
2137
2138 static void iwl3945_irq_tasklet(struct iwl_priv *priv)
2139 {
2140         u32 inta, handled = 0;
2141         u32 inta_fh;
2142         unsigned long flags;
2143 #ifdef CONFIG_IWLWIFI_DEBUG
2144         u32 inta_mask;
2145 #endif
2146
2147         spin_lock_irqsave(&priv->lock, flags);
2148
2149         /* Ack/clear/reset pending uCode interrupts.
2150          * Note:  Some bits in CSR_INT are "OR" of bits in CSR_FH_INT_STATUS,
2151          *  and will clear only when CSR_FH_INT_STATUS gets cleared. */
2152         inta = iwl_read32(priv, CSR_INT);
2153         iwl_write32(priv, CSR_INT, inta);
2154
2155         /* Ack/clear/reset pending flow-handler (DMA) interrupts.
2156          * Any new interrupts that happen after this, either while we're
2157          * in this tasklet, or later, will show up in next ISR/tasklet. */
2158         inta_fh = iwl_read32(priv, CSR_FH_INT_STATUS);
2159         iwl_write32(priv, CSR_FH_INT_STATUS, inta_fh);
2160
2161 #ifdef CONFIG_IWLWIFI_DEBUG
2162         if (priv->debug_level & IWL_DL_ISR) {
2163                 /* just for debug */
2164                 inta_mask = iwl_read32(priv, CSR_INT_MASK);
2165                 IWL_DEBUG_ISR(priv, "inta 0x%08x, enabled 0x%08x, fh 0x%08x\n",
2166                               inta, inta_mask, inta_fh);
2167         }
2168 #endif
2169
2170         /* Since CSR_INT and CSR_FH_INT_STATUS reads and clears are not
2171          * atomic, make sure that inta covers all the interrupts that
2172          * we've discovered, even if FH interrupt came in just after
2173          * reading CSR_INT. */
2174         if (inta_fh & CSR39_FH_INT_RX_MASK)
2175                 inta |= CSR_INT_BIT_FH_RX;
2176         if (inta_fh & CSR39_FH_INT_TX_MASK)
2177                 inta |= CSR_INT_BIT_FH_TX;
2178
2179         /* Now service all interrupt bits discovered above. */
2180         if (inta & CSR_INT_BIT_HW_ERR) {
2181                 IWL_ERR(priv, "Microcode HW error detected.  Restarting.\n");
2182
2183                 /* Tell the device to stop sending interrupts */
2184                 iwl_disable_interrupts(priv);
2185
2186                 iwl_irq_handle_error(priv);
2187
2188                 handled |= CSR_INT_BIT_HW_ERR;
2189
2190                 spin_unlock_irqrestore(&priv->lock, flags);
2191
2192                 return;
2193         }
2194
2195 #ifdef CONFIG_IWLWIFI_DEBUG
2196         if (priv->debug_level & (IWL_DL_ISR)) {
2197                 /* NIC fires this, but we don't use it, redundant with WAKEUP */
2198                 if (inta & CSR_INT_BIT_SCD)
2199                         IWL_DEBUG_ISR(priv, "Scheduler finished to transmit "
2200                                       "the frame/frames.\n");
2201
2202                 /* Alive notification via Rx interrupt will do the real work */
2203                 if (inta & CSR_INT_BIT_ALIVE)
2204                         IWL_DEBUG_ISR(priv, "Alive interrupt\n");
2205         }
2206 #endif
2207         /* Safely ignore these bits for debug checks below */
2208         inta &= ~(CSR_INT_BIT_SCD | CSR_INT_BIT_ALIVE);
2209
2210         /* Error detected by uCode */
2211         if (inta & CSR_INT_BIT_SW_ERR) {
2212                 IWL_ERR(priv, "Microcode SW error detected. "
2213                         "Restarting 0x%X.\n", inta);
2214                 iwl_irq_handle_error(priv);
2215                 handled |= CSR_INT_BIT_SW_ERR;
2216         }
2217
2218         /* uCode wakes up after power-down sleep */
2219         if (inta & CSR_INT_BIT_WAKEUP) {
2220                 IWL_DEBUG_ISR(priv, "Wakeup interrupt\n");
2221                 iwl_rx_queue_update_write_ptr(priv, &priv->rxq);
2222                 iwl_txq_update_write_ptr(priv, &priv->txq[0]);
2223                 iwl_txq_update_write_ptr(priv, &priv->txq[1]);
2224                 iwl_txq_update_write_ptr(priv, &priv->txq[2]);
2225                 iwl_txq_update_write_ptr(priv, &priv->txq[3]);
2226                 iwl_txq_update_write_ptr(priv, &priv->txq[4]);
2227                 iwl_txq_update_write_ptr(priv, &priv->txq[5]);
2228
2229                 handled |= CSR_INT_BIT_WAKEUP;
2230         }
2231
2232         /* All uCode command responses, including Tx command responses,
2233          * Rx "responses" (frame-received notification), and other
2234          * notifications from uCode come through here*/
2235         if (inta & (CSR_INT_BIT_FH_RX | CSR_INT_BIT_SW_RX)) {
2236                 iwl3945_rx_handle(priv);
2237                 handled |= (CSR_INT_BIT_FH_RX | CSR_INT_BIT_SW_RX);
2238         }
2239
2240         if (inta & CSR_INT_BIT_FH_TX) {
2241                 IWL_DEBUG_ISR(priv, "Tx interrupt\n");
2242
2243                 iwl_write32(priv, CSR_FH_INT_STATUS, (1 << 6));
2244                 if (!iwl_grab_nic_access(priv)) {
2245                         iwl_write_direct32(priv, FH39_TCSR_CREDIT
2246                                              (FH39_SRVC_CHNL), 0x0);
2247                         iwl_release_nic_access(priv);
2248                 }
2249                 handled |= CSR_INT_BIT_FH_TX;
2250         }
2251
2252         if (inta & ~handled)
2253                 IWL_ERR(priv, "Unhandled INTA bits 0x%08x\n", inta & ~handled);
2254
2255         if (inta & ~CSR_INI_SET_MASK) {
2256                 IWL_WARN(priv, "Disabled INTA bits 0x%08x were pending\n",
2257                          inta & ~CSR_INI_SET_MASK);
2258                 IWL_WARN(priv, "   with FH_INT = 0x%08x\n", inta_fh);
2259         }
2260
2261         /* Re-enable all interrupts */
2262         /* only Re-enable if disabled by irq */
2263         if (test_bit(STATUS_INT_ENABLED, &priv->status))
2264                 iwl_enable_interrupts(priv);
2265
2266 #ifdef CONFIG_IWLWIFI_DEBUG
2267         if (priv->debug_level & (IWL_DL_ISR)) {
2268                 inta = iwl_read32(priv, CSR_INT);
2269                 inta_mask = iwl_read32(priv, CSR_INT_MASK);
2270                 inta_fh = iwl_read32(priv, CSR_FH_INT_STATUS);
2271                 IWL_DEBUG_ISR(priv, "End inta 0x%08x, enabled 0x%08x, fh 0x%08x, "
2272                         "flags 0x%08lx\n", inta, inta_mask, inta_fh, flags);
2273         }
2274 #endif
2275         spin_unlock_irqrestore(&priv->lock, flags);
2276 }
2277
2278 static int iwl3945_get_channels_for_scan(struct iwl_priv *priv,
2279                                          enum ieee80211_band band,
2280                                      u8 is_active, u8 n_probes,
2281                                      struct iwl3945_scan_channel *scan_ch)
2282 {
2283         const struct ieee80211_channel *channels = NULL;
2284         const struct ieee80211_supported_band *sband;
2285         const struct iwl_channel_info *ch_info;
2286         u16 passive_dwell = 0;
2287         u16 active_dwell = 0;
2288         int added, i;
2289
2290         sband = iwl_get_hw_mode(priv, band);
2291         if (!sband)
2292                 return 0;
2293
2294         channels = sband->channels;
2295
2296         active_dwell = iwl_get_active_dwell_time(priv, band, n_probes);
2297         passive_dwell = iwl_get_passive_dwell_time(priv, band);
2298
2299         if (passive_dwell <= active_dwell)
2300                 passive_dwell = active_dwell + 1;
2301
2302         for (i = 0, added = 0; i < sband->n_channels; i++) {
2303                 if (channels[i].flags & IEEE80211_CHAN_DISABLED)
2304                         continue;
2305
2306                 scan_ch->channel = channels[i].hw_value;
2307
2308                 ch_info = iwl_get_channel_info(priv, band, scan_ch->channel);
2309                 if (!is_channel_valid(ch_info)) {
2310                         IWL_DEBUG_SCAN(priv, "Channel %d is INVALID for this band.\n",
2311                                        scan_ch->channel);
2312                         continue;
2313                 }
2314
2315                 scan_ch->active_dwell = cpu_to_le16(active_dwell);
2316                 scan_ch->passive_dwell = cpu_to_le16(passive_dwell);
2317                 /* If passive , set up for auto-switch
2318                  *  and use long active_dwell time.
2319                  */
2320                 if (!is_active || is_channel_passive(ch_info) ||
2321                     (channels[i].flags & IEEE80211_CHAN_PASSIVE_SCAN)) {
2322                         scan_ch->type = 0;      /* passive */
2323                         if (IWL_UCODE_API(priv->ucode_ver) == 1)
2324                                 scan_ch->active_dwell = cpu_to_le16(passive_dwell - 1);
2325                 } else {
2326                         scan_ch->type = 1;      /* active */
2327                 }
2328
2329                 /* Set direct probe bits. These may be used both for active
2330                  * scan channels (probes gets sent right away),
2331                  * or for passive channels (probes get se sent only after
2332                  * hearing clear Rx packet).*/
2333                 if (IWL_UCODE_API(priv->ucode_ver) >= 2) {
2334                         if (n_probes)
2335                                 scan_ch->type |= IWL39_SCAN_PROBE_MASK(n_probes);
2336                 } else {
2337                         /* uCode v1 does not allow setting direct probe bits on
2338                          * passive channel. */
2339                         if ((scan_ch->type & 1) && n_probes)
2340                                 scan_ch->type |= IWL39_SCAN_PROBE_MASK(n_probes);
2341                 }
2342
2343                 /* Set txpower levels to defaults */
2344                 scan_ch->tpc.dsp_atten = 110;
2345                 /* scan_pwr_info->tpc.dsp_atten; */
2346
2347                 /*scan_pwr_info->tpc.tx_gain; */
2348                 if (band == IEEE80211_BAND_5GHZ)
2349                         scan_ch->tpc.tx_gain = ((1 << 5) | (3 << 3)) | 3;
2350                 else {
2351                         scan_ch->tpc.tx_gain = ((1 << 5) | (5 << 3));
2352                         /* NOTE: if we were doing 6Mb OFDM for scans we'd use
2353                          * power level:
2354                          * scan_ch->tpc.tx_gain = ((1 << 5) | (2 << 3)) | 3;
2355                          */
2356                 }
2357
2358                 IWL_DEBUG_SCAN(priv, "Scanning %d [%s %d]\n",
2359                                scan_ch->channel,
2360                                (scan_ch->type & 1) ? "ACTIVE" : "PASSIVE",
2361                                (scan_ch->type & 1) ?
2362                                active_dwell : passive_dwell);
2363
2364                 scan_ch++;
2365                 added++;
2366         }
2367
2368         IWL_DEBUG_SCAN(priv, "total channels to scan %d \n", added);
2369         return added;
2370 }
2371
2372 static void iwl3945_init_hw_rates(struct iwl_priv *priv,
2373                               struct ieee80211_rate *rates)
2374 {
2375         int i;
2376
2377         for (i = 0; i < IWL_RATE_COUNT; i++) {
2378                 rates[i].bitrate = iwl3945_rates[i].ieee * 5;
2379                 rates[i].hw_value = i; /* Rate scaling will work on indexes */
2380                 rates[i].hw_value_short = i;
2381                 rates[i].flags = 0;
2382                 if ((i > IWL39_LAST_OFDM_RATE) || (i < IWL_FIRST_OFDM_RATE)) {
2383                         /*
2384                          * If CCK != 1M then set short preamble rate flag.
2385                          */
2386                         rates[i].flags |= (iwl3945_rates[i].plcp == 10) ?
2387                                 0 : IEEE80211_RATE_SHORT_PREAMBLE;
2388                 }
2389         }
2390 }
2391
2392 /******************************************************************************
2393  *
2394  * uCode download functions
2395  *
2396  ******************************************************************************/
2397
2398 static void iwl3945_dealloc_ucode_pci(struct iwl_priv *priv)
2399 {
2400         iwl_free_fw_desc(priv->pci_dev, &priv->ucode_code);
2401         iwl_free_fw_desc(priv->pci_dev, &priv->ucode_data);
2402         iwl_free_fw_desc(priv->pci_dev, &priv->ucode_data_backup);
2403         iwl_free_fw_desc(priv->pci_dev, &priv->ucode_init);
2404         iwl_free_fw_desc(priv->pci_dev, &priv->ucode_init_data);
2405         iwl_free_fw_desc(priv->pci_dev, &priv->ucode_boot);
2406 }
2407
2408 /**
2409  * iwl3945_verify_inst_full - verify runtime uCode image in card vs. host,
2410  *     looking at all data.
2411  */
2412 static int iwl3945_verify_inst_full(struct iwl_priv *priv, __le32 *image, u32 len)
2413 {
2414         u32 val;
2415         u32 save_len = len;
2416         int rc = 0;
2417         u32 errcnt;
2418
2419         IWL_DEBUG_INFO(priv, "ucode inst image size is %u\n", len);
2420
2421         rc = iwl_grab_nic_access(priv);
2422         if (rc)
2423                 return rc;
2424
2425         iwl_write_direct32(priv, HBUS_TARG_MEM_RADDR,
2426                                IWL39_RTC_INST_LOWER_BOUND);
2427
2428         errcnt = 0;
2429         for (; len > 0; len -= sizeof(u32), image++) {
2430                 /* read data comes through single port, auto-incr addr */
2431                 /* NOTE: Use the debugless read so we don't flood kernel log
2432                  * if IWL_DL_IO is set */
2433                 val = _iwl_read_direct32(priv, HBUS_TARG_MEM_RDAT);
2434                 if (val != le32_to_cpu(*image)) {
2435                         IWL_ERR(priv, "uCode INST section is invalid at "
2436                                   "offset 0x%x, is 0x%x, s/b 0x%x\n",
2437                                   save_len - len, val, le32_to_cpu(*image));
2438                         rc = -EIO;
2439                         errcnt++;
2440                         if (errcnt >= 20)
2441                                 break;
2442                 }
2443         }
2444
2445         iwl_release_nic_access(priv);
2446
2447         if (!errcnt)
2448                 IWL_DEBUG_INFO(priv,
2449                         "ucode image in INSTRUCTION memory is good\n");
2450
2451         return rc;
2452 }
2453
2454
2455 /**
2456  * iwl3945_verify_inst_sparse - verify runtime uCode image in card vs. host,
2457  *   using sample data 100 bytes apart.  If these sample points are good,
2458  *   it's a pretty good bet that everything between them is good, too.
2459  */
2460 static int iwl3945_verify_inst_sparse(struct iwl_priv *priv, __le32 *image, u32 len)
2461 {
2462         u32 val;
2463         int rc = 0;
2464         u32 errcnt = 0;
2465         u32 i;
2466
2467         IWL_DEBUG_INFO(priv, "ucode inst image size is %u\n", len);
2468
2469         rc = iwl_grab_nic_access(priv);
2470         if (rc)
2471                 return rc;
2472
2473         for (i = 0; i < len; i += 100, image += 100/sizeof(u32)) {
2474                 /* read data comes through single port, auto-incr addr */
2475                 /* NOTE: Use the debugless read so we don't flood kernel log
2476                  * if IWL_DL_IO is set */
2477                 iwl_write_direct32(priv, HBUS_TARG_MEM_RADDR,
2478                         i + IWL39_RTC_INST_LOWER_BOUND);
2479                 val = _iwl_read_direct32(priv, HBUS_TARG_MEM_RDAT);
2480                 if (val != le32_to_cpu(*image)) {
2481 #if 0 /* Enable this if you want to see details */
2482                         IWL_ERR(priv, "uCode INST section is invalid at "
2483                                   "offset 0x%x, is 0x%x, s/b 0x%x\n",
2484                                   i, val, *image);
2485 #endif
2486                         rc = -EIO;
2487                         errcnt++;
2488                         if (errcnt >= 3)
2489                                 break;
2490                 }
2491         }
2492
2493         iwl_release_nic_access(priv);
2494
2495         return rc;
2496 }
2497
2498
2499 /**
2500  * iwl3945_verify_ucode - determine which instruction image is in SRAM,
2501  *    and verify its contents
2502  */
2503 static int iwl3945_verify_ucode(struct iwl_priv *priv)
2504 {
2505         __le32 *image;
2506         u32 len;
2507         int rc = 0;
2508
2509         /* Try bootstrap */
2510         image = (__le32 *)priv->ucode_boot.v_addr;
2511         len = priv->ucode_boot.len;
2512         rc = iwl3945_verify_inst_sparse(priv, image, len);
2513         if (rc == 0) {
2514                 IWL_DEBUG_INFO(priv, "Bootstrap uCode is good in inst SRAM\n");
2515                 return 0;
2516         }
2517
2518         /* Try initialize */
2519         image = (__le32 *)priv->ucode_init.v_addr;
2520         len = priv->ucode_init.len;
2521         rc = iwl3945_verify_inst_sparse(priv, image, len);
2522         if (rc == 0) {
2523                 IWL_DEBUG_INFO(priv, "Initialize uCode is good in inst SRAM\n");
2524                 return 0;
2525         }
2526
2527         /* Try runtime/protocol */
2528         image = (__le32 *)priv->ucode_code.v_addr;
2529         len = priv->ucode_code.len;
2530         rc = iwl3945_verify_inst_sparse(priv, image, len);
2531         if (rc == 0) {
2532                 IWL_DEBUG_INFO(priv, "Runtime uCode is good in inst SRAM\n");
2533                 return 0;
2534         }
2535
2536         IWL_ERR(priv, "NO VALID UCODE IMAGE IN INSTRUCTION SRAM!!\n");
2537
2538         /* Since nothing seems to match, show first several data entries in
2539          * instruction SRAM, so maybe visual inspection will give a clue.
2540          * Selection of bootstrap image (vs. other images) is arbitrary. */
2541         image = (__le32 *)priv->ucode_boot.v_addr;
2542         len = priv->ucode_boot.len;
2543         rc = iwl3945_verify_inst_full(priv, image, len);
2544
2545         return rc;
2546 }
2547
2548 static void iwl3945_nic_start(struct iwl_priv *priv)
2549 {
2550         /* Remove all resets to allow NIC to operate */
2551         iwl_write32(priv, CSR_RESET, 0);
2552 }
2553
2554 /**
2555  * iwl3945_read_ucode - Read uCode images from disk file.
2556  *
2557  * Copy into buffers for card to fetch via bus-mastering
2558  */
2559 static int iwl3945_read_ucode(struct iwl_priv *priv)
2560 {
2561         struct iwl_ucode *ucode;
2562         int ret = -EINVAL, index;
2563         const struct firmware *ucode_raw;
2564         /* firmware file name contains uCode/driver compatibility version */
2565         const char *name_pre = priv->cfg->fw_name_pre;
2566         const unsigned int api_max = priv->cfg->ucode_api_max;
2567         const unsigned int api_min = priv->cfg->ucode_api_min;
2568         char buf[25];
2569         u8 *src;
2570         size_t len;
2571         u32 api_ver, inst_size, data_size, init_size, init_data_size, boot_size;
2572
2573         /* Ask kernel firmware_class module to get the boot firmware off disk.
2574          * request_firmware() is synchronous, file is in memory on return. */
2575         for (index = api_max; index >= api_min; index--) {
2576                 sprintf(buf, "%s%u%s", name_pre, index, ".ucode");
2577                 ret = request_firmware(&ucode_raw, buf, &priv->pci_dev->dev);
2578                 if (ret < 0) {
2579                         IWL_ERR(priv, "%s firmware file req failed: %d\n",
2580                                   buf, ret);
2581                         if (ret == -ENOENT)
2582                                 continue;
2583                         else
2584                                 goto error;
2585                 } else {
2586                         if (index < api_max)
2587                                 IWL_ERR(priv, "Loaded firmware %s, "
2588                                         "which is deprecated. "
2589                                         " Please use API v%u instead.\n",
2590                                           buf, api_max);
2591                         IWL_DEBUG_INFO(priv, "Got firmware '%s' file "
2592                                        "(%zd bytes) from disk\n",
2593                                        buf, ucode_raw->size);
2594                         break;
2595                 }
2596         }
2597
2598         if (ret < 0)
2599                 goto error;
2600
2601         /* Make sure that we got at least our header! */
2602         if (ucode_raw->size < sizeof(*ucode)) {
2603                 IWL_ERR(priv, "File size way too small!\n");
2604                 ret = -EINVAL;
2605                 goto err_release;
2606         }
2607
2608         /* Data from ucode file:  header followed by uCode images */
2609         ucode = (void *)ucode_raw->data;
2610
2611         priv->ucode_ver = le32_to_cpu(ucode->ver);
2612         api_ver = IWL_UCODE_API(priv->ucode_ver);
2613         inst_size = le32_to_cpu(ucode->inst_size);
2614         data_size = le32_to_cpu(ucode->data_size);
2615         init_size = le32_to_cpu(ucode->init_size);
2616         init_data_size = le32_to_cpu(ucode->init_data_size);
2617         boot_size = le32_to_cpu(ucode->boot_size);
2618
2619         /* api_ver should match the api version forming part of the
2620          * firmware filename ... but we don't check for that and only rely
2621          * on the API version read from firware header from here on forward */
2622
2623         if (api_ver < api_min || api_ver > api_max) {
2624                 IWL_ERR(priv, "Driver unable to support your firmware API. "
2625                           "Driver supports v%u, firmware is v%u.\n",
2626                           api_max, api_ver);
2627                 priv->ucode_ver = 0;
2628                 ret = -EINVAL;
2629                 goto err_release;
2630         }
2631         if (api_ver != api_max)
2632                 IWL_ERR(priv, "Firmware has old API version. Expected %u, "
2633                           "got %u. New firmware can be obtained "
2634                           "from http://www.intellinuxwireless.org.\n",
2635                           api_max, api_ver);
2636
2637         IWL_INFO(priv, "loaded firmware version %u.%u.%u.%u\n",
2638                 IWL_UCODE_MAJOR(priv->ucode_ver),
2639                 IWL_UCODE_MINOR(priv->ucode_ver),
2640                 IWL_UCODE_API(priv->ucode_ver),
2641                 IWL_UCODE_SERIAL(priv->ucode_ver));
2642
2643         IWL_DEBUG_INFO(priv, "f/w package hdr ucode version raw = 0x%x\n",
2644                        priv->ucode_ver);
2645         IWL_DEBUG_INFO(priv, "f/w package hdr runtime inst size = %u\n",
2646                        inst_size);
2647         IWL_DEBUG_INFO(priv, "f/w package hdr runtime data size = %u\n",
2648                        data_size);
2649         IWL_DEBUG_INFO(priv, "f/w package hdr init inst size = %u\n",
2650                        init_size);
2651         IWL_DEBUG_INFO(priv, "f/w package hdr init data size = %u\n",
2652                        init_data_size);
2653         IWL_DEBUG_INFO(priv, "f/w package hdr boot inst size = %u\n",
2654                        boot_size);
2655
2656
2657         /* Verify size of file vs. image size info in file's header */
2658         if (ucode_raw->size < sizeof(*ucode) +
2659                 inst_size + data_size + init_size +
2660                 init_data_size + boot_size) {
2661
2662                 IWL_DEBUG_INFO(priv, "uCode file size %zd too small\n",
2663                                ucode_raw->size);
2664                 ret = -EINVAL;
2665                 goto err_release;
2666         }
2667
2668         /* Verify that uCode images will fit in card's SRAM */
2669         if (inst_size > IWL39_MAX_INST_SIZE) {
2670                 IWL_DEBUG_INFO(priv, "uCode instr len %d too large to fit in\n",
2671                                inst_size);
2672                 ret = -EINVAL;
2673                 goto err_release;
2674         }
2675
2676         if (data_size > IWL39_MAX_DATA_SIZE) {
2677                 IWL_DEBUG_INFO(priv, "uCode data len %d too large to fit in\n",
2678                                data_size);
2679                 ret = -EINVAL;
2680                 goto err_release;
2681         }
2682         if (init_size > IWL39_MAX_INST_SIZE) {
2683                 IWL_DEBUG_INFO(priv,
2684                                 "uCode init instr len %d too large to fit in\n",
2685                                 init_size);
2686                 ret = -EINVAL;
2687                 goto err_release;
2688         }
2689         if (init_data_size > IWL39_MAX_DATA_SIZE) {
2690                 IWL_DEBUG_INFO(priv,
2691                                 "uCode init data len %d too large to fit in\n",
2692                                 init_data_size);
2693                 ret = -EINVAL;
2694                 goto err_release;
2695         }
2696         if (boot_size > IWL39_MAX_BSM_SIZE) {
2697                 IWL_DEBUG_INFO(priv,
2698                                 "uCode boot instr len %d too large to fit in\n",
2699                                 boot_size);
2700                 ret = -EINVAL;
2701                 goto err_release;
2702         }
2703
2704         /* Allocate ucode buffers for card's bus-master loading ... */
2705
2706         /* Runtime instructions and 2 copies of data:
2707          * 1) unmodified from disk
2708          * 2) backup cache for save/restore during power-downs */
2709         priv->ucode_code.len = inst_size;
2710         iwl_alloc_fw_desc(priv->pci_dev, &priv->ucode_code);
2711
2712         priv->ucode_data.len = data_size;
2713         iwl_alloc_fw_desc(priv->pci_dev, &priv->ucode_data);
2714
2715         priv->ucode_data_backup.len = data_size;
2716         iwl_alloc_fw_desc(priv->pci_dev, &priv->ucode_data_backup);
2717
2718         if (!priv->ucode_code.v_addr || !priv->ucode_data.v_addr ||
2719             !priv->ucode_data_backup.v_addr)
2720                 goto err_pci_alloc;
2721
2722         /* Initialization instructions and data */
2723         if (init_size && init_data_size) {
2724                 priv->ucode_init.len = init_size;
2725                 iwl_alloc_fw_desc(priv->pci_dev, &priv->ucode_init);
2726
2727                 priv->ucode_init_data.len = init_data_size;
2728                 iwl_alloc_fw_desc(priv->pci_dev, &priv->ucode_init_data);
2729
2730                 if (!priv->ucode_init.v_addr || !priv->ucode_init_data.v_addr)
2731                         goto err_pci_alloc;
2732         }
2733
2734         /* Bootstrap (instructions only, no data) */
2735         if (boot_size) {
2736                 priv->ucode_boot.len = boot_size;
2737                 iwl_alloc_fw_desc(priv->pci_dev, &priv->ucode_boot);
2738
2739                 if (!priv->ucode_boot.v_addr)
2740                         goto err_pci_alloc;
2741         }
2742
2743         /* Copy images into buffers for card's bus-master reads ... */
2744
2745         /* Runtime instructions (first block of data in file) */
2746         src = &ucode->data[0];
2747         len = priv->ucode_code.len;
2748         IWL_DEBUG_INFO(priv,
2749                 "Copying (but not loading) uCode instr len %zd\n", len);
2750         memcpy(priv->ucode_code.v_addr, src, len);
2751         IWL_DEBUG_INFO(priv, "uCode instr buf vaddr = 0x%p, paddr = 0x%08x\n",
2752                 priv->ucode_code.v_addr, (u32)priv->ucode_code.p_addr);
2753
2754         /* Runtime data (2nd block)
2755          * NOTE:  Copy into backup buffer will be done in iwl3945_up()  */
2756         src = &ucode->data[inst_size];
2757         len = priv->ucode_data.len;
2758         IWL_DEBUG_INFO(priv,
2759                 "Copying (but not loading) uCode data len %zd\n", len);
2760         memcpy(priv->ucode_data.v_addr, src, len);
2761         memcpy(priv->ucode_data_backup.v_addr, src, len);
2762
2763         /* Initialization instructions (3rd block) */
2764         if (init_size) {
2765                 src = &ucode->data[inst_size + data_size];
2766                 len = priv->ucode_init.len;
2767                 IWL_DEBUG_INFO(priv,
2768                         "Copying (but not loading) init instr len %zd\n", len);
2769                 memcpy(priv->ucode_init.v_addr, src, len);
2770         }
2771
2772         /* Initialization data (4th block) */
2773         if (init_data_size) {
2774                 src = &ucode->data[inst_size + data_size + init_size];
2775                 len = priv->ucode_init_data.len;
2776                 IWL_DEBUG_INFO(priv,
2777                         "Copying (but not loading) init data len %zd\n", len);
2778                 memcpy(priv->ucode_init_data.v_addr, src, len);
2779         }
2780
2781         /* Bootstrap instructions (5th block) */
2782         src = &ucode->data[inst_size + data_size + init_size + init_data_size];
2783         len = priv->ucode_boot.len;
2784         IWL_DEBUG_INFO(priv,
2785                 "Copying (but not loading) boot instr len %zd\n", len);
2786         memcpy(priv->ucode_boot.v_addr, src, len);
2787
2788         /* We have our copies now, allow OS release its copies */
2789         release_firmware(ucode_raw);
2790         return 0;
2791
2792  err_pci_alloc:
2793         IWL_ERR(priv, "failed to allocate pci memory\n");
2794         ret = -ENOMEM;
2795         iwl3945_dealloc_ucode_pci(priv);
2796
2797  err_release:
2798         release_firmware(ucode_raw);
2799
2800  error:
2801         return ret;
2802 }
2803
2804
2805 /**
2806  * iwl3945_set_ucode_ptrs - Set uCode address location
2807  *
2808  * Tell initialization uCode where to find runtime uCode.
2809  *
2810  * BSM registers initially contain pointers to initialization uCode.
2811  * We need to replace them to load runtime uCode inst and data,
2812  * and to save runtime data when powering down.
2813  */
2814 static int iwl3945_set_ucode_ptrs(struct iwl_priv *priv)
2815 {
2816         dma_addr_t pinst;
2817         dma_addr_t pdata;
2818         int rc = 0;
2819         unsigned long flags;
2820
2821         /* bits 31:0 for 3945 */
2822         pinst = priv->ucode_code.p_addr;
2823         pdata = priv->ucode_data_backup.p_addr;
2824
2825         spin_lock_irqsave(&priv->lock, flags);
2826         rc = iwl_grab_nic_access(priv);
2827         if (rc) {
2828                 spin_unlock_irqrestore(&priv->lock, flags);
2829                 return rc;
2830         }
2831
2832         /* Tell bootstrap uCode where to find image to load */
2833         iwl_write_prph(priv, BSM_DRAM_INST_PTR_REG, pinst);
2834         iwl_write_prph(priv, BSM_DRAM_DATA_PTR_REG, pdata);
2835         iwl_write_prph(priv, BSM_DRAM_DATA_BYTECOUNT_REG,
2836                                  priv->ucode_data.len);
2837
2838         /* Inst byte count must be last to set up, bit 31 signals uCode
2839          *   that all new ptr/size info is in place */
2840         iwl_write_prph(priv, BSM_DRAM_INST_BYTECOUNT_REG,
2841                                  priv->ucode_code.len | BSM_DRAM_INST_LOAD);
2842
2843         iwl_release_nic_access(priv);
2844
2845         spin_unlock_irqrestore(&priv->lock, flags);
2846
2847         IWL_DEBUG_INFO(priv, "Runtime uCode pointers are set.\n");
2848
2849         return rc;
2850 }
2851
2852 /**
2853  * iwl3945_init_alive_start - Called after REPLY_ALIVE notification received
2854  *
2855  * Called after REPLY_ALIVE notification received from "initialize" uCode.
2856  *
2857  * Tell "initialize" uCode to go ahead and load the runtime uCode.
2858  */
2859 static void iwl3945_init_alive_start(struct iwl_priv *priv)
2860 {
2861         /* Check alive response for "valid" sign from uCode */
2862         if (priv->card_alive_init.is_valid != UCODE_VALID_OK) {
2863                 /* We had an error bringing up the hardware, so take it
2864                  * all the way back down so we can try again */
2865                 IWL_DEBUG_INFO(priv, "Initialize Alive failed.\n");
2866                 goto restart;
2867         }
2868
2869         /* Bootstrap uCode has loaded initialize uCode ... verify inst image.
2870          * This is a paranoid check, because we would not have gotten the
2871          * "initialize" alive if code weren't properly loaded.  */
2872         if (iwl3945_verify_ucode(priv)) {
2873                 /* Runtime instruction load was bad;
2874                  * take it all the way back down so we can try again */
2875                 IWL_DEBUG_INFO(priv, "Bad \"initialize\" uCode load.\n");
2876                 goto restart;
2877         }
2878
2879         /* Send pointers to protocol/runtime uCode image ... init code will
2880          * load and launch runtime uCode, which will send us another "Alive"
2881          * notification. */
2882         IWL_DEBUG_INFO(priv, "Initialization Alive received.\n");
2883         if (iwl3945_set_ucode_ptrs(priv)) {
2884                 /* Runtime instruction load won't happen;
2885                  * take it all the way back down so we can try again */
2886                 IWL_DEBUG_INFO(priv, "Couldn't set up uCode pointers.\n");
2887                 goto restart;
2888         }
2889         return;
2890
2891  restart:
2892         queue_work(priv->workqueue, &priv->restart);
2893 }
2894
2895
2896 /* temporary */
2897 static int iwl3945_mac_beacon_update(struct ieee80211_hw *hw,
2898                                      struct sk_buff *skb);
2899
2900 /**
2901  * iwl3945_alive_start - called after REPLY_ALIVE notification received
2902  *                   from protocol/runtime uCode (initialization uCode's
2903  *                   Alive gets handled by iwl3945_init_alive_start()).
2904  */
2905 static void iwl3945_alive_start(struct iwl_priv *priv)
2906 {
2907         int rc = 0;
2908         int thermal_spin = 0;
2909         u32 rfkill;
2910
2911         IWL_DEBUG_INFO(priv, "Runtime Alive received.\n");
2912
2913         if (priv->card_alive.is_valid != UCODE_VALID_OK) {
2914                 /* We had an error bringing up the hardware, so take it
2915                  * all the way back down so we can try again */
2916                 IWL_DEBUG_INFO(priv, "Alive failed.\n");
2917                 goto restart;
2918         }
2919
2920         /* Initialize uCode has loaded Runtime uCode ... verify inst image.
2921          * This is a paranoid check, because we would not have gotten the
2922          * "runtime" alive if code weren't properly loaded.  */
2923         if (iwl3945_verify_ucode(priv)) {
2924                 /* Runtime instruction load was bad;
2925                  * take it all the way back down so we can try again */
2926                 IWL_DEBUG_INFO(priv, "Bad runtime uCode load.\n");
2927                 goto restart;
2928         }
2929
2930         iwl3945_clear_stations_table(priv);
2931
2932         rc = iwl_grab_nic_access(priv);
2933         if (rc) {
2934                 IWL_WARN(priv, "Can not read RFKILL status from adapter\n");
2935                 return;
2936         }
2937
2938         rfkill = iwl_read_prph(priv, APMG_RFKILL_REG);
2939         IWL_DEBUG_INFO(priv, "RFKILL status: 0x%x\n", rfkill);
2940         iwl_release_nic_access(priv);
2941
2942         if (rfkill & 0x1) {
2943                 clear_bit(STATUS_RF_KILL_HW, &priv->status);
2944                 /* if RFKILL is not on, then wait for thermal
2945                  * sensor in adapter to kick in */
2946                 while (iwl3945_hw_get_temperature(priv) == 0) {
2947                         thermal_spin++;
2948                         udelay(10);
2949                 }
2950
2951                 if (thermal_spin)
2952                         IWL_DEBUG_INFO(priv, "Thermal calibration took %dus\n",
2953                                        thermal_spin * 10);
2954         } else
2955                 set_bit(STATUS_RF_KILL_HW, &priv->status);
2956
2957         /* After the ALIVE response, we can send commands to 3945 uCode */
2958         set_bit(STATUS_ALIVE, &priv->status);
2959
2960         /* Clear out the uCode error bit if it is set */
2961         clear_bit(STATUS_FW_ERROR, &priv->status);
2962
2963         if (iwl_is_rfkill(priv))
2964                 return;
2965
2966         ieee80211_wake_queues(priv->hw);
2967
2968         priv->active_rate = priv->rates_mask;
2969         priv->active_rate_basic = priv->rates_mask & IWL_BASIC_RATES_MASK;
2970
2971         iwl_power_update_mode(priv, false);
2972
2973         if (iwl_is_associated(priv)) {
2974                 struct iwl3945_rxon_cmd *active_rxon =
2975                                 (struct iwl3945_rxon_cmd *)(&priv->active_rxon);
2976
2977                 memcpy(&priv->staging_rxon, &priv->active_rxon,
2978                        sizeof(priv->staging_rxon));
2979                 active_rxon->filter_flags &= ~RXON_FILTER_ASSOC_MSK;
2980         } else {
2981                 /* Initialize our rx_config data */
2982                 iwl_connection_init_rx_config(priv, priv->iw_mode);
2983         }
2984
2985         /* Configure Bluetooth device coexistence support */
2986         iwl_send_bt_config(priv);
2987
2988         /* Configure the adapter for unassociated operation */
2989         iwl3945_commit_rxon(priv);
2990
2991         iwl3945_reg_txpower_periodic(priv);
2992
2993         iwl3945_led_register(priv);
2994
2995         IWL_DEBUG_INFO(priv, "ALIVE processing complete.\n");
2996         set_bit(STATUS_READY, &priv->status);
2997         wake_up_interruptible(&priv->wait_command_queue);
2998
2999         if (priv->error_recovering)
3000                 iwl3945_error_recovery(priv);
3001
3002         /* reassociate for ADHOC mode */
3003         if (priv->vif && (priv->iw_mode == NL80211_IFTYPE_ADHOC)) {
3004                 struct sk_buff *beacon = ieee80211_beacon_get(priv->hw,
3005                                                                 priv->vif);
3006                 if (beacon)
3007                         iwl3945_mac_beacon_update(priv->hw, beacon);
3008         }
3009
3010         return;
3011
3012  restart:
3013         queue_work(priv->workqueue, &priv->restart);
3014 }
3015
3016 static void iwl3945_cancel_deferred_work(struct iwl_priv *priv);
3017
3018 static void __iwl3945_down(struct iwl_priv *priv)
3019 {
3020         unsigned long flags;
3021         int exit_pending = test_bit(STATUS_EXIT_PENDING, &priv->status);
3022         struct ieee80211_conf *conf = NULL;
3023
3024         IWL_DEBUG_INFO(priv, DRV_NAME " is going down\n");
3025
3026         conf = ieee80211_get_hw_conf(priv->hw);
3027
3028         if (!exit_pending)
3029                 set_bit(STATUS_EXIT_PENDING, &priv->status);
3030
3031         iwl3945_led_unregister(priv);
3032         iwl3945_clear_stations_table(priv);
3033
3034         /* Unblock any waiting calls */
3035         wake_up_interruptible_all(&priv->wait_command_queue);
3036
3037         /* Wipe out the EXIT_PENDING status bit if we are not actually
3038          * exiting the module */
3039         if (!exit_pending)
3040                 clear_bit(STATUS_EXIT_PENDING, &priv->status);
3041
3042         /* stop and reset the on-board processor */
3043         iwl_write32(priv, CSR_RESET, CSR_RESET_REG_FLAG_NEVO_RESET);
3044
3045         /* tell the device to stop sending interrupts */
3046         spin_lock_irqsave(&priv->lock, flags);
3047         iwl_disable_interrupts(priv);
3048         spin_unlock_irqrestore(&priv->lock, flags);
3049         iwl_synchronize_irq(priv);
3050
3051         if (priv->mac80211_registered)
3052                 ieee80211_stop_queues(priv->hw);
3053
3054         /* If we have not previously called iwl3945_init() then
3055          * clear all bits but the RF Kill and SUSPEND bits and return */
3056         if (!iwl_is_init(priv)) {
3057                 priv->status = test_bit(STATUS_RF_KILL_HW, &priv->status) <<
3058                                         STATUS_RF_KILL_HW |
3059                                test_bit(STATUS_RF_KILL_SW, &priv->status) <<
3060                                         STATUS_RF_KILL_SW |
3061                                test_bit(STATUS_GEO_CONFIGURED, &priv->status) <<
3062                                         STATUS_GEO_CONFIGURED |
3063                                test_bit(STATUS_IN_SUSPEND, &priv->status) <<
3064                                         STATUS_IN_SUSPEND |
3065                                 test_bit(STATUS_EXIT_PENDING, &priv->status) <<
3066                                         STATUS_EXIT_PENDING;
3067                 goto exit;
3068         }
3069
3070         /* ...otherwise clear out all the status bits but the RF Kill and
3071          * SUSPEND bits and continue taking the NIC down. */
3072         priv->status &= test_bit(STATUS_RF_KILL_HW, &priv->status) <<
3073                                 STATUS_RF_KILL_HW |
3074                         test_bit(STATUS_RF_KILL_SW, &priv->status) <<
3075                                 STATUS_RF_KILL_SW |
3076                         test_bit(STATUS_GEO_CONFIGURED, &priv->status) <<
3077                                 STATUS_GEO_CONFIGURED |
3078                         test_bit(STATUS_IN_SUSPEND, &priv->status) <<
3079                                 STATUS_IN_SUSPEND |
3080                         test_bit(STATUS_FW_ERROR, &priv->status) <<
3081                                 STATUS_FW_ERROR |
3082                         test_bit(STATUS_EXIT_PENDING, &priv->status) <<
3083                                 STATUS_EXIT_PENDING;
3084
3085         priv->cfg->ops->lib->apm_ops.reset(priv);
3086         spin_lock_irqsave(&priv->lock, flags);
3087         iwl_clear_bit(priv, CSR_GP_CNTRL, CSR_GP_CNTRL_REG_FLAG_MAC_ACCESS_REQ);
3088         spin_unlock_irqrestore(&priv->lock, flags);
3089
3090         iwl3945_hw_txq_ctx_stop(priv);
3091         iwl3945_hw_rxq_stop(priv);
3092
3093         spin_lock_irqsave(&priv->lock, flags);
3094         if (!iwl_grab_nic_access(priv)) {
3095                 iwl_write_prph(priv, APMG_CLK_DIS_REG,
3096                                          APMG_CLK_VAL_DMA_CLK_RQT);
3097                 iwl_release_nic_access(priv);
3098         }
3099         spin_unlock_irqrestore(&priv->lock, flags);
3100
3101         udelay(5);
3102
3103         if (exit_pending || test_bit(STATUS_IN_SUSPEND, &priv->status))
3104                 priv->cfg->ops->lib->apm_ops.stop(priv);
3105         else
3106                 priv->cfg->ops->lib->apm_ops.reset(priv);
3107
3108  exit:
3109         memset(&priv->card_alive, 0, sizeof(struct iwl_alive_resp));
3110
3111         if (priv->ibss_beacon)
3112                 dev_kfree_skb(priv->ibss_beacon);
3113         priv->ibss_beacon = NULL;
3114
3115         /* clear out any free frames */
3116         iwl3945_clear_free_frames(priv);
3117 }
3118
3119 static void iwl3945_down(struct iwl_priv *priv)
3120 {
3121         mutex_lock(&priv->mutex);
3122         __iwl3945_down(priv);
3123         mutex_unlock(&priv->mutex);
3124
3125         iwl3945_cancel_deferred_work(priv);
3126 }
3127
3128 #define MAX_HW_RESTARTS 5
3129
3130 static int __iwl3945_up(struct iwl_priv *priv)
3131 {
3132         int rc, i;
3133
3134         if (test_bit(STATUS_EXIT_PENDING, &priv->status)) {
3135                 IWL_WARN(priv, "Exit pending; will not bring the NIC up\n");
3136                 return -EIO;
3137         }
3138
3139         if (test_bit(STATUS_RF_KILL_SW, &priv->status)) {
3140                 IWL_WARN(priv, "Radio disabled by SW RF kill (module "
3141                             "parameter)\n");
3142                 return -ENODEV;
3143         }
3144
3145         if (!priv->ucode_data_backup.v_addr || !priv->ucode_data.v_addr) {
3146                 IWL_ERR(priv, "ucode not available for device bring up\n");
3147                 return -EIO;
3148         }
3149
3150         /* If platform's RF_KILL switch is NOT set to KILL */
3151         if (iwl_read32(priv, CSR_GP_CNTRL) &
3152                                 CSR_GP_CNTRL_REG_FLAG_HW_RF_KILL_SW)
3153                 clear_bit(STATUS_RF_KILL_HW, &priv->status);
3154         else {
3155                 set_bit(STATUS_RF_KILL_HW, &priv->status);
3156                 if (!test_bit(STATUS_IN_SUSPEND, &priv->status)) {
3157                         IWL_WARN(priv, "Radio disabled by HW RF Kill switch\n");
3158                         return -ENODEV;
3159                 }
3160         }
3161
3162         iwl_write32(priv, CSR_INT, 0xFFFFFFFF);
3163
3164         rc = iwl3945_hw_nic_init(priv);
3165         if (rc) {
3166                 IWL_ERR(priv, "Unable to int nic\n");
3167                 return rc;
3168         }
3169
3170         /* make sure rfkill handshake bits are cleared */
3171         iwl_write32(priv, CSR_UCODE_DRV_GP1_CLR, CSR_UCODE_SW_BIT_RFKILL);
3172         iwl_write32(priv, CSR_UCODE_DRV_GP1_CLR,
3173                     CSR_UCODE_DRV_GP1_BIT_CMD_BLOCKED);
3174
3175         /* clear (again), then enable host interrupts */
3176         iwl_write32(priv, CSR_INT, 0xFFFFFFFF);
3177         iwl_enable_interrupts(priv);
3178
3179         /* really make sure rfkill handshake bits are cleared */
3180         iwl_write32(priv, CSR_UCODE_DRV_GP1_CLR, CSR_UCODE_SW_BIT_RFKILL);
3181         iwl_write32(priv, CSR_UCODE_DRV_GP1_CLR, CSR_UCODE_SW_BIT_RFKILL);
3182
3183         /* Copy original ucode data image from disk into backup cache.
3184          * This will be used to initialize the on-board processor's
3185          * data SRAM for a clean start when the runtime program first loads. */
3186         memcpy(priv->ucode_data_backup.v_addr, priv->ucode_data.v_addr,
3187                priv->ucode_data.len);
3188
3189         /* We return success when we resume from suspend and rf_kill is on. */
3190         if (test_bit(STATUS_RF_KILL_HW, &priv->status))
3191                 return 0;
3192
3193         for (i = 0; i < MAX_HW_RESTARTS; i++) {
3194
3195                 iwl3945_clear_stations_table(priv);
3196
3197                 /* load bootstrap state machine,
3198                  * load bootstrap program into processor's memory,
3199                  * prepare to load the "initialize" uCode */
3200                 priv->cfg->ops->lib->load_ucode(priv);
3201
3202                 if (rc) {
3203                         IWL_ERR(priv,
3204                                 "Unable to set up bootstrap uCode: %d\n", rc);
3205                         continue;
3206                 }
3207
3208                 /* start card; "initialize" will load runtime ucode */
3209                 iwl3945_nic_start(priv);
3210
3211                 IWL_DEBUG_INFO(priv, DRV_NAME " is coming up\n");
3212
3213                 return 0;
3214         }
3215
3216         set_bit(STATUS_EXIT_PENDING, &priv->status);
3217         __iwl3945_down(priv);
3218         clear_bit(STATUS_EXIT_PENDING, &priv->status);
3219
3220         /* tried to restart and config the device for as long as our
3221          * patience could withstand */
3222         IWL_ERR(priv, "Unable to initialize device after %d attempts.\n", i);
3223         return -EIO;
3224 }
3225
3226
3227 /*****************************************************************************
3228  *
3229  * Workqueue callbacks
3230  *
3231  *****************************************************************************/
3232
3233 static void iwl3945_bg_init_alive_start(struct work_struct *data)
3234 {
3235         struct iwl_priv *priv =
3236             container_of(data, struct iwl_priv, init_alive_start.work);
3237
3238         if (test_bit(STATUS_EXIT_PENDING, &priv->status))
3239                 return;
3240
3241         mutex_lock(&priv->mutex);
3242         iwl3945_init_alive_start(priv);
3243         mutex_unlock(&priv->mutex);
3244 }
3245
3246 static void iwl3945_bg_alive_start(struct work_struct *data)
3247 {
3248         struct iwl_priv *priv =
3249             container_of(data, struct iwl_priv, alive_start.work);
3250
3251         if (test_bit(STATUS_EXIT_PENDING, &priv->status))
3252                 return;
3253
3254         mutex_lock(&priv->mutex);
3255         iwl3945_alive_start(priv);
3256         mutex_unlock(&priv->mutex);
3257 }
3258
3259 static void iwl3945_rfkill_poll(struct work_struct *data)
3260 {
3261         struct iwl_priv *priv =
3262             container_of(data, struct iwl_priv, rfkill_poll.work);
3263         unsigned long status = priv->status;
3264
3265         if (iwl_read32(priv, CSR_GP_CNTRL) & CSR_GP_CNTRL_REG_FLAG_HW_RF_KILL_SW)
3266                 clear_bit(STATUS_RF_KILL_HW, &priv->status);
3267         else
3268                 set_bit(STATUS_RF_KILL_HW, &priv->status);
3269
3270         if (test_bit(STATUS_RF_KILL_HW, &status) != test_bit(STATUS_RF_KILL_HW, &priv->status))
3271                 queue_work(priv->workqueue, &priv->rf_kill);
3272
3273         queue_delayed_work(priv->workqueue, &priv->rfkill_poll,
3274                            round_jiffies_relative(2 * HZ));
3275
3276 }
3277
3278 #define IWL_SCAN_CHECK_WATCHDOG (7 * HZ)
3279 static void iwl3945_bg_request_scan(struct work_struct *data)
3280 {
3281         struct iwl_priv *priv =
3282             container_of(data, struct iwl_priv, request_scan);
3283         struct iwl_host_cmd cmd = {
3284                 .id = REPLY_SCAN_CMD,
3285                 .len = sizeof(struct iwl3945_scan_cmd),
3286                 .meta.flags = CMD_SIZE_HUGE,
3287         };
3288         int rc = 0;
3289         struct iwl3945_scan_cmd *scan;
3290         struct ieee80211_conf *conf = NULL;
3291         u8 n_probes = 2;
3292         enum ieee80211_band band;
3293         DECLARE_SSID_BUF(ssid);
3294
3295         conf = ieee80211_get_hw_conf(priv->hw);
3296
3297         mutex_lock(&priv->mutex);
3298
3299         if (!iwl_is_ready(priv)) {
3300                 IWL_WARN(priv, "request scan called when driver not ready.\n");
3301                 goto done;
3302         }
3303
3304         /* Make sure the scan wasn't canceled before this queued work
3305          * was given the chance to run... */
3306         if (!test_bit(STATUS_SCANNING, &priv->status))
3307                 goto done;
3308
3309         /* This should never be called or scheduled if there is currently
3310          * a scan active in the hardware. */
3311         if (test_bit(STATUS_SCAN_HW, &priv->status)) {
3312                 IWL_DEBUG_INFO(priv, "Multiple concurrent scan requests  "
3313                                 "Ignoring second request.\n");
3314                 rc = -EIO;
3315                 goto done;
3316         }
3317
3318         if (test_bit(STATUS_EXIT_PENDING, &priv->status)) {
3319                 IWL_DEBUG_SCAN(priv, "Aborting scan due to device shutdown\n");
3320                 goto done;
3321         }
3322
3323         if (test_bit(STATUS_SCAN_ABORTING, &priv->status)) {
3324                 IWL_DEBUG_HC(priv,
3325                         "Scan request while abort pending. Queuing.\n");
3326                 goto done;
3327         }
3328
3329         if (iwl_is_rfkill(priv)) {
3330                 IWL_DEBUG_HC(priv, "Aborting scan due to RF Kill activation\n");
3331                 goto done;
3332         }
3333
3334         if (!test_bit(STATUS_READY, &priv->status)) {
3335                 IWL_DEBUG_HC(priv,
3336                         "Scan request while uninitialized. Queuing.\n");
3337                 goto done;
3338         }
3339
3340         if (!priv->scan_bands) {
3341                 IWL_DEBUG_HC(priv, "Aborting scan due to no requested bands\n");
3342                 goto done;
3343         }
3344
3345         if (!priv->scan) {
3346                 priv->scan = kmalloc(sizeof(struct iwl3945_scan_cmd) +
3347                                      IWL_MAX_SCAN_SIZE, GFP_KERNEL);
3348                 if (!priv->scan) {
3349                         rc = -ENOMEM;
3350                         goto done;
3351                 }
3352         }
3353         scan = priv->scan;
3354         memset(scan, 0, sizeof(struct iwl3945_scan_cmd) + IWL_MAX_SCAN_SIZE);
3355
3356         scan->quiet_plcp_th = IWL_PLCP_QUIET_THRESH;
3357         scan->quiet_time = IWL_ACTIVE_QUIET_TIME;
3358
3359         if (iwl_is_associated(priv)) {
3360                 u16 interval = 0;
3361                 u32 extra;
3362                 u32 suspend_time = 100;
3363                 u32 scan_suspend_time = 100;
3364                 unsigned long flags;
3365
3366                 IWL_DEBUG_INFO(priv, "Scanning while associated...\n");
3367
3368                 spin_lock_irqsave(&priv->lock, flags);
3369                 interval = priv->beacon_int;
3370                 spin_unlock_irqrestore(&priv->lock, flags);
3371
3372                 scan->suspend_time = 0;
3373                 scan->max_out_time = cpu_to_le32(200 * 1024);
3374                 if (!interval)
3375                         interval = suspend_time;
3376                 /*
3377                  * suspend time format:
3378                  *  0-19: beacon interval in usec (time before exec.)
3379                  * 20-23: 0
3380                  * 24-31: number of beacons (suspend between channels)
3381                  */
3382
3383                 extra = (suspend_time / interval) << 24;
3384                 scan_suspend_time = 0xFF0FFFFF &
3385                     (extra | ((suspend_time % interval) * 1024));
3386
3387                 scan->suspend_time = cpu_to_le32(scan_suspend_time);
3388                 IWL_DEBUG_SCAN(priv, "suspend_time 0x%X beacon interval %d\n",
3389                                scan_suspend_time, interval);
3390         }
3391
3392         /* We should add the ability for user to lock to PASSIVE ONLY */
3393         if (priv->one_direct_scan) {
3394                 IWL_DEBUG_SCAN(priv, "Kicking off one direct scan for '%s'\n",
3395                                 print_ssid(ssid, priv->direct_ssid,
3396                                 priv->direct_ssid_len));
3397                 scan->direct_scan[0].id = WLAN_EID_SSID;
3398                 scan->direct_scan[0].len = priv->direct_ssid_len;
3399                 memcpy(scan->direct_scan[0].ssid,
3400                        priv->direct_ssid, priv->direct_ssid_len);
3401                 n_probes++;
3402         } else
3403                 IWL_DEBUG_SCAN(priv, "Kicking off one indirect scan.\n");
3404
3405         /* We don't build a direct scan probe request; the uCode will do
3406          * that based on the direct_mask added to each channel entry */
3407         scan->tx_cmd.tx_flags = TX_CMD_FLG_SEQ_CTL_MSK;
3408         scan->tx_cmd.sta_id = priv->hw_params.bcast_sta_id;
3409         scan->tx_cmd.stop_time.life_time = TX_CMD_LIFE_TIME_INFINITE;
3410
3411         /* flags + rate selection */
3412
3413         if (priv->scan_bands & BIT(IEEE80211_BAND_2GHZ)) {
3414                 scan->flags = RXON_FLG_BAND_24G_MSK | RXON_FLG_AUTO_DETECT_MSK;
3415                 scan->tx_cmd.rate = IWL_RATE_1M_PLCP;
3416                 scan->good_CRC_th = 0;
3417                 band = IEEE80211_BAND_2GHZ;
3418         } else if (priv->scan_bands & BIT(IEEE80211_BAND_5GHZ)) {
3419                 scan->tx_cmd.rate = IWL_RATE_6M_PLCP;
3420                 scan->good_CRC_th = IWL_GOOD_CRC_TH;
3421                 band = IEEE80211_BAND_5GHZ;
3422         } else {
3423                 IWL_WARN(priv, "Invalid scan band count\n");
3424                 goto done;
3425         }
3426
3427         scan->tx_cmd.len = cpu_to_le16(
3428                 iwl_fill_probe_req(priv, band,
3429                                    (struct ieee80211_mgmt *)scan->data,
3430                                    IWL_MAX_SCAN_SIZE - sizeof(*scan)));
3431
3432         /* select Rx antennas */
3433         scan->flags |= iwl3945_get_antenna_flags(priv);
3434
3435         if (priv->iw_mode == NL80211_IFTYPE_MONITOR)
3436                 scan->filter_flags = RXON_FILTER_PROMISC_MSK;
3437
3438         scan->channel_count =
3439                 iwl3945_get_channels_for_scan(priv, band, 1, /* active */
3440                                               n_probes,
3441                         (void *)&scan->data[le16_to_cpu(scan->tx_cmd.len)]);
3442
3443         if (scan->channel_count == 0) {
3444                 IWL_DEBUG_SCAN(priv, "channel count %d\n", scan->channel_count);
3445                 goto done;
3446         }
3447
3448         cmd.len += le16_to_cpu(scan->tx_cmd.len) +
3449             scan->channel_count * sizeof(struct iwl3945_scan_channel);
3450         cmd.data = scan;
3451         scan->len = cpu_to_le16(cmd.len);
3452
3453         set_bit(STATUS_SCAN_HW, &priv->status);
3454         rc = iwl_send_cmd_sync(priv, &cmd);
3455         if (rc)
3456                 goto done;
3457
3458         queue_delayed_work(priv->workqueue, &priv->scan_check,
3459                            IWL_SCAN_CHECK_WATCHDOG);
3460
3461         mutex_unlock(&priv->mutex);
3462         return;
3463
3464  done:
3465         /* can not perform scan make sure we clear scanning
3466          * bits from status so next scan request can be performed.
3467          * if we dont clear scanning status bit here all next scan
3468          * will fail
3469         */
3470         clear_bit(STATUS_SCAN_HW, &priv->status);
3471         clear_bit(STATUS_SCANNING, &priv->status);
3472
3473         /* inform mac80211 scan aborted */
3474         queue_work(priv->workqueue, &priv->scan_completed);
3475         mutex_unlock(&priv->mutex);
3476 }
3477
3478 static void iwl3945_bg_up(struct work_struct *data)
3479 {
3480         struct iwl_priv *priv = container_of(data, struct iwl_priv, up);
3481
3482         if (test_bit(STATUS_EXIT_PENDING, &priv->status))
3483                 return;
3484
3485         mutex_lock(&priv->mutex);
3486         __iwl3945_up(priv);
3487         mutex_unlock(&priv->mutex);
3488         iwl_rfkill_set_hw_state(priv);
3489 }
3490
3491 static void iwl3945_bg_restart(struct work_struct *data)
3492 {
3493         struct iwl_priv *priv = container_of(data, struct iwl_priv, restart);
3494
3495         if (test_bit(STATUS_EXIT_PENDING, &priv->status))
3496                 return;
3497
3498         iwl3945_down(priv);
3499         queue_work(priv->workqueue, &priv->up);
3500 }
3501
3502 static void iwl3945_bg_rx_replenish(struct work_struct *data)
3503 {
3504         struct iwl_priv *priv =
3505             container_of(data, struct iwl_priv, rx_replenish);
3506
3507         if (test_bit(STATUS_EXIT_PENDING, &priv->status))
3508                 return;
3509
3510         mutex_lock(&priv->mutex);
3511         iwl3945_rx_replenish(priv);
3512         mutex_unlock(&priv->mutex);
3513 }
3514
3515 #define IWL_DELAY_NEXT_SCAN (HZ*2)
3516
3517 static void iwl3945_post_associate(struct iwl_priv *priv)
3518 {
3519         int rc = 0;
3520         struct ieee80211_conf *conf = NULL;
3521
3522         if (priv->iw_mode == NL80211_IFTYPE_AP) {
3523                 IWL_ERR(priv, "%s Should not be called in AP mode\n", __func__);
3524                 return;
3525         }
3526
3527
3528         IWL_DEBUG_ASSOC(priv, "Associated as %d to: %pM\n",
3529                         priv->assoc_id, priv->active_rxon.bssid_addr);
3530
3531         if (test_bit(STATUS_EXIT_PENDING, &priv->status))
3532                 return;
3533
3534         if (!priv->vif || !priv->is_open)
3535                 return;
3536
3537         iwl_scan_cancel_timeout(priv, 200);
3538
3539         conf = ieee80211_get_hw_conf(priv->hw);
3540
3541         priv->staging_rxon.filter_flags &= ~RXON_FILTER_ASSOC_MSK;
3542         iwl3945_commit_rxon(priv);
3543
3544         memset(&priv->rxon_timing, 0, sizeof(struct iwl_rxon_time_cmd));
3545         iwl3945_setup_rxon_timing(priv);
3546         rc = iwl_send_cmd_pdu(priv, REPLY_RXON_TIMING,
3547                               sizeof(priv->rxon_timing), &priv->rxon_timing);
3548         if (rc)
3549                 IWL_WARN(priv, "REPLY_RXON_TIMING failed - "
3550                             "Attempting to continue.\n");
3551
3552         priv->staging_rxon.filter_flags |= RXON_FILTER_ASSOC_MSK;
3553
3554         priv->staging_rxon.assoc_id = cpu_to_le16(priv->assoc_id);
3555
3556         IWL_DEBUG_ASSOC(priv, "assoc id %d beacon interval %d\n",
3557                         priv->assoc_id, priv->beacon_int);
3558
3559         if (priv->assoc_capability & WLAN_CAPABILITY_SHORT_PREAMBLE)
3560                 priv->staging_rxon.flags |= RXON_FLG_SHORT_PREAMBLE_MSK;
3561         else
3562                 priv->staging_rxon.flags &= ~RXON_FLG_SHORT_PREAMBLE_MSK;
3563
3564         if (priv->staging_rxon.flags & RXON_FLG_BAND_24G_MSK) {
3565                 if (priv->assoc_capability & WLAN_CAPABILITY_SHORT_SLOT_TIME)
3566                         priv->staging_rxon.flags |= RXON_FLG_SHORT_SLOT_MSK;
3567                 else
3568                         priv->staging_rxon.flags &= ~RXON_FLG_SHORT_SLOT_MSK;
3569
3570                 if (priv->iw_mode == NL80211_IFTYPE_ADHOC)
3571                         priv->staging_rxon.flags &= ~RXON_FLG_SHORT_SLOT_MSK;
3572
3573         }
3574
3575         iwl3945_commit_rxon(priv);
3576
3577         switch (priv->iw_mode) {
3578         case NL80211_IFTYPE_STATION:
3579                 iwl3945_rate_scale_init(priv->hw, IWL_AP_ID);
3580                 break;
3581
3582         case NL80211_IFTYPE_ADHOC:
3583
3584                 priv->assoc_id = 1;
3585                 iwl3945_add_station(priv, priv->bssid, 0, 0);
3586                 iwl3945_sync_sta(priv, IWL_STA_ID,
3587                                  (priv->band == IEEE80211_BAND_5GHZ) ?
3588                                  IWL_RATE_6M_PLCP : IWL_RATE_1M_PLCP,
3589                                  CMD_ASYNC);
3590                 iwl3945_rate_scale_init(priv->hw, IWL_STA_ID);
3591                 iwl3945_send_beacon_cmd(priv);
3592
3593                 break;
3594
3595         default:
3596                  IWL_ERR(priv, "%s Should not be called in %d mode\n",
3597                            __func__, priv->iw_mode);
3598                 break;
3599         }
3600
3601         iwl3945_activate_qos(priv, 0);
3602
3603         /* we have just associated, don't start scan too early */
3604         priv->next_scan_jiffies = jiffies + IWL_DELAY_NEXT_SCAN;
3605 }
3606
3607 static int iwl3945_mac_config(struct ieee80211_hw *hw, u32 changed);
3608
3609 /*****************************************************************************
3610  *
3611  * mac80211 entry point functions
3612  *
3613  *****************************************************************************/
3614
3615 #define UCODE_READY_TIMEOUT     (2 * HZ)
3616
3617 static int iwl3945_mac_start(struct ieee80211_hw *hw)
3618 {
3619         struct iwl_priv *priv = hw->priv;
3620         int ret;
3621
3622         IWL_DEBUG_MAC80211(priv, "enter\n");
3623
3624         /* we should be verifying the device is ready to be opened */
3625         mutex_lock(&priv->mutex);
3626
3627         memset(&priv->staging_rxon, 0, sizeof(priv->staging_rxon));
3628         /* fetch ucode file from disk, alloc and copy to bus-master buffers ...
3629          * ucode filename and max sizes are card-specific. */
3630
3631         if (!priv->ucode_code.len) {
3632                 ret = iwl3945_read_ucode(priv);
3633                 if (ret) {
3634                         IWL_ERR(priv, "Could not read microcode: %d\n", ret);
3635                         mutex_unlock(&priv->mutex);
3636                         goto out_release_irq;
3637                 }
3638         }
3639
3640         ret = __iwl3945_up(priv);
3641
3642         mutex_unlock(&priv->mutex);
3643
3644         iwl_rfkill_set_hw_state(priv);
3645
3646         if (ret)
3647                 goto out_release_irq;
3648
3649         IWL_DEBUG_INFO(priv, "Start UP work.\n");
3650
3651         if (test_bit(STATUS_IN_SUSPEND, &priv->status))
3652                 return 0;
3653
3654         /* Wait for START_ALIVE from ucode. Otherwise callbacks from
3655          * mac80211 will not be run successfully. */
3656         ret = wait_event_interruptible_timeout(priv->wait_command_queue,
3657                         test_bit(STATUS_READY, &priv->status),
3658                         UCODE_READY_TIMEOUT);
3659         if (!ret) {
3660                 if (!test_bit(STATUS_READY, &priv->status)) {
3661                         IWL_ERR(priv,
3662                                 "Wait for START_ALIVE timeout after %dms.\n",
3663                                 jiffies_to_msecs(UCODE_READY_TIMEOUT));
3664                         ret = -ETIMEDOUT;
3665                         goto out_release_irq;
3666                 }
3667         }
3668
3669         /* ucode is running and will send rfkill notifications,
3670          * no need to poll the killswitch state anymore */
3671         cancel_delayed_work(&priv->rfkill_poll);
3672
3673         priv->is_open = 1;
3674         IWL_DEBUG_MAC80211(priv, "leave\n");
3675         return 0;
3676
3677 out_release_irq:
3678         priv->is_open = 0;
3679         IWL_DEBUG_MAC80211(priv, "leave - failed\n");
3680         return ret;
3681 }
3682
3683 static void iwl3945_mac_stop(struct ieee80211_hw *hw)
3684 {
3685         struct iwl_priv *priv = hw->priv;
3686
3687         IWL_DEBUG_MAC80211(priv, "enter\n");
3688
3689         if (!priv->is_open) {
3690                 IWL_DEBUG_MAC80211(priv, "leave - skip\n");
3691                 return;
3692         }
3693
3694         priv->is_open = 0;
3695
3696         if (iwl_is_ready_rf(priv)) {
3697                 /* stop mac, cancel any scan request and clear
3698                  * RXON_FILTER_ASSOC_MSK BIT
3699                  */
3700                 mutex_lock(&priv->mutex);
3701                 iwl_scan_cancel_timeout(priv, 100);
3702                 mutex_unlock(&priv->mutex);
3703         }
3704
3705         iwl3945_down(priv);
3706
3707         flush_workqueue(priv->workqueue);
3708
3709         /* start polling the killswitch state again */
3710         queue_delayed_work(priv->workqueue, &priv->rfkill_poll,
3711                            round_jiffies_relative(2 * HZ));
3712
3713         IWL_DEBUG_MAC80211(priv, "leave\n");
3714 }
3715
3716 static int iwl3945_mac_tx(struct ieee80211_hw *hw, struct sk_buff *skb)
3717 {
3718         struct iwl_priv *priv = hw->priv;
3719
3720         IWL_DEBUG_MAC80211(priv, "enter\n");
3721
3722         IWL_DEBUG_TX(priv, "dev->xmit(%d bytes) at rate 0x%02x\n", skb->len,
3723                      ieee80211_get_tx_rate(hw, IEEE80211_SKB_CB(skb))->bitrate);
3724
3725         if (iwl3945_tx_skb(priv, skb))
3726                 dev_kfree_skb_any(skb);
3727
3728         IWL_DEBUG_MAC80211(priv, "leave\n");
3729         return NETDEV_TX_OK;
3730 }
3731
3732 static int iwl3945_mac_add_interface(struct ieee80211_hw *hw,
3733                                  struct ieee80211_if_init_conf *conf)
3734 {
3735         struct iwl_priv *priv = hw->priv;
3736         unsigned long flags;
3737
3738         IWL_DEBUG_MAC80211(priv, "enter: type %d\n", conf->type);
3739
3740         if (priv->vif) {
3741                 IWL_DEBUG_MAC80211(priv, "leave - vif != NULL\n");
3742                 return -EOPNOTSUPP;
3743         }
3744
3745         spin_lock_irqsave(&priv->lock, flags);
3746         priv->vif = conf->vif;
3747         priv->iw_mode = conf->type;
3748
3749         spin_unlock_irqrestore(&priv->lock, flags);
3750
3751         mutex_lock(&priv->mutex);
3752
3753         if (conf->mac_addr) {
3754                 IWL_DEBUG_MAC80211(priv, "Set: %pM\n", conf->mac_addr);
3755                 memcpy(priv->mac_addr, conf->mac_addr, ETH_ALEN);
3756         }
3757
3758         if (iwl_is_ready(priv))
3759                 iwl3945_set_mode(priv, conf->type);
3760
3761         mutex_unlock(&priv->mutex);
3762
3763         IWL_DEBUG_MAC80211(priv, "leave\n");
3764         return 0;
3765 }
3766
3767 /**
3768  * iwl3945_mac_config - mac80211 config callback
3769  *
3770  * We ignore conf->flags & IEEE80211_CONF_SHORT_SLOT_TIME since it seems to
3771  * be set inappropriately and the driver currently sets the hardware up to
3772  * use it whenever needed.
3773  */
3774 static int iwl3945_mac_config(struct ieee80211_hw *hw, u32 changed)
3775 {
3776         struct iwl_priv *priv = hw->priv;
3777         const struct iwl_channel_info *ch_info;
3778         struct ieee80211_conf *conf = &hw->conf;
3779         unsigned long flags;
3780         int ret = 0;
3781
3782         mutex_lock(&priv->mutex);
3783         IWL_DEBUG_MAC80211(priv, "enter to channel %d\n",
3784                                 conf->channel->hw_value);
3785
3786         if (!iwl_is_ready(priv)) {
3787                 IWL_DEBUG_MAC80211(priv, "leave - not ready\n");
3788                 ret = -EIO;
3789                 goto out;
3790         }
3791
3792         if (unlikely(!iwl3945_mod_params.disable_hw_scan &&
3793                      test_bit(STATUS_SCANNING, &priv->status))) {
3794                 IWL_DEBUG_MAC80211(priv, "leave - scanning\n");
3795                 set_bit(STATUS_CONF_PENDING, &priv->status);
3796                 mutex_unlock(&priv->mutex);
3797                 return 0;
3798         }
3799
3800         spin_lock_irqsave(&priv->lock, flags);
3801
3802         ch_info = iwl_get_channel_info(priv, conf->channel->band,
3803                                        conf->channel->hw_value);
3804         if (!is_channel_valid(ch_info)) {
3805                 IWL_DEBUG_SCAN(priv,
3806                                 "Channel %d [%d] is INVALID for this band.\n",
3807                                 conf->channel->hw_value, conf->channel->band);
3808                 IWL_DEBUG_MAC80211(priv, "leave - invalid channel\n");
3809                 spin_unlock_irqrestore(&priv->lock, flags);
3810                 ret = -EINVAL;
3811                 goto out;
3812         }
3813
3814         iwl_set_rxon_channel(priv, conf->channel);
3815
3816         iwl_set_flags_for_band(priv, conf->channel->band);
3817
3818         /* The list of supported rates and rate mask can be different
3819          * for each phymode; since the phymode may have changed, reset
3820          * the rate mask to what mac80211 lists */
3821         iwl_set_rate(priv);
3822
3823         spin_unlock_irqrestore(&priv->lock, flags);
3824
3825 #ifdef IEEE80211_CONF_CHANNEL_SWITCH
3826         if (conf->flags & IEEE80211_CONF_CHANNEL_SWITCH) {
3827                 iwl3945_hw_channel_switch(priv, conf->channel);
3828                 goto out;
3829         }
3830 #endif
3831
3832         if (conf->radio_enabled && iwl_radio_kill_sw_enable_radio(priv)) {
3833                 IWL_DEBUG_MAC80211(priv, "leave - RF-KILL - waiting for uCode\n");
3834                 goto out;
3835         }
3836
3837         if (!conf->radio_enabled) {
3838                 iwl_radio_kill_sw_disable_radio(priv);
3839                 IWL_DEBUG_MAC80211(priv, "leave - radio disabled\n");
3840                 goto out;
3841         }
3842
3843         if (iwl_is_rfkill(priv)) {
3844                 IWL_DEBUG_MAC80211(priv, "leave - RF kill\n");
3845                 ret = -EIO;
3846                 goto out;
3847         }
3848
3849         iwl_set_rate(priv);
3850
3851         if (memcmp(&priv->active_rxon,
3852                    &priv->staging_rxon, sizeof(priv->staging_rxon)))
3853                 iwl3945_commit_rxon(priv);
3854         else
3855                 IWL_DEBUG_INFO(priv, "Not re-sending same RXON configuration\n");
3856
3857         IWL_DEBUG_MAC80211(priv, "leave\n");
3858
3859 out:
3860         clear_bit(STATUS_CONF_PENDING, &priv->status);
3861         mutex_unlock(&priv->mutex);
3862         return ret;
3863 }
3864
3865 static void iwl3945_config_ap(struct iwl_priv *priv)
3866 {
3867         int rc = 0;
3868
3869         if (test_bit(STATUS_EXIT_PENDING, &priv->status))
3870                 return;
3871
3872         /* The following should be done only at AP bring up */
3873         if (!(iwl_is_associated(priv))) {
3874
3875                 /* RXON - unassoc (to set timing command) */
3876                 priv->staging_rxon.filter_flags &= ~RXON_FILTER_ASSOC_MSK;
3877                 iwl3945_commit_rxon(priv);
3878
3879                 /* RXON Timing */
3880                 memset(&priv->rxon_timing, 0, sizeof(struct iwl_rxon_time_cmd));
3881                 iwl3945_setup_rxon_timing(priv);
3882                 rc = iwl_send_cmd_pdu(priv, REPLY_RXON_TIMING,
3883                                       sizeof(priv->rxon_timing),
3884                                       &priv->rxon_timing);
3885                 if (rc)
3886                         IWL_WARN(priv, "REPLY_RXON_TIMING failed - "
3887                                         "Attempting to continue.\n");
3888
3889                 /* FIXME: what should be the assoc_id for AP? */
3890                 priv->staging_rxon.assoc_id = cpu_to_le16(priv->assoc_id);
3891                 if (priv->assoc_capability & WLAN_CAPABILITY_SHORT_PREAMBLE)
3892                         priv->staging_rxon.flags |=
3893                                 RXON_FLG_SHORT_PREAMBLE_MSK;
3894                 else
3895                         priv->staging_rxon.flags &=
3896                                 ~RXON_FLG_SHORT_PREAMBLE_MSK;
3897
3898                 if (priv->staging_rxon.flags & RXON_FLG_BAND_24G_MSK) {
3899                         if (priv->assoc_capability &
3900                                 WLAN_CAPABILITY_SHORT_SLOT_TIME)
3901                                 priv->staging_rxon.flags |=
3902                                         RXON_FLG_SHORT_SLOT_MSK;
3903                         else
3904                                 priv->staging_rxon.flags &=
3905                                         ~RXON_FLG_SHORT_SLOT_MSK;
3906
3907                         if (priv->iw_mode == NL80211_IFTYPE_ADHOC)
3908                                 priv->staging_rxon.flags &=
3909                                         ~RXON_FLG_SHORT_SLOT_MSK;
3910                 }
3911                 /* restore RXON assoc */
3912                 priv->staging_rxon.filter_flags |= RXON_FILTER_ASSOC_MSK;
3913                 iwl3945_commit_rxon(priv);
3914                 iwl3945_add_station(priv, iwl_bcast_addr, 0, 0);
3915         }
3916         iwl3945_send_beacon_cmd(priv);
3917
3918         /* FIXME - we need to add code here to detect a totally new
3919          * configuration, reset the AP, unassoc, rxon timing, assoc,
3920          * clear sta table, add BCAST sta... */
3921 }
3922
3923 static int iwl3945_mac_config_interface(struct ieee80211_hw *hw,
3924                                         struct ieee80211_vif *vif,
3925                                         struct ieee80211_if_conf *conf)
3926 {
3927         struct iwl_priv *priv = hw->priv;
3928         int rc;
3929
3930         if (conf == NULL)
3931                 return -EIO;
3932
3933         if (priv->vif != vif) {
3934                 IWL_DEBUG_MAC80211(priv, "leave - priv->vif != vif\n");
3935                 return 0;
3936         }
3937
3938         /* handle this temporarily here */
3939         if (priv->iw_mode == NL80211_IFTYPE_ADHOC &&
3940             conf->changed & IEEE80211_IFCC_BEACON) {
3941                 struct sk_buff *beacon = ieee80211_beacon_get(hw, vif);
3942                 if (!beacon)
3943                         return -ENOMEM;
3944                 mutex_lock(&priv->mutex);
3945                 rc = iwl3945_mac_beacon_update(hw, beacon);
3946                 mutex_unlock(&priv->mutex);
3947                 if (rc)
3948                         return rc;
3949         }
3950
3951         if (!iwl_is_alive(priv))
3952                 return -EAGAIN;
3953
3954         mutex_lock(&priv->mutex);
3955
3956         if (conf->bssid)
3957                 IWL_DEBUG_MAC80211(priv, "bssid: %pM\n", conf->bssid);
3958
3959 /*
3960  * very dubious code was here; the probe filtering flag is never set:
3961  *
3962         if (unlikely(test_bit(STATUS_SCANNING, &priv->status)) &&
3963             !(priv->hw->flags & IEEE80211_HW_NO_PROBE_FILTERING)) {
3964  */
3965
3966         if (priv->iw_mode == NL80211_IFTYPE_AP) {
3967                 if (!conf->bssid) {
3968                         conf->bssid = priv->mac_addr;
3969                         memcpy(priv->bssid, priv->mac_addr, ETH_ALEN);
3970                         IWL_DEBUG_MAC80211(priv, "bssid was set to: %pM\n",
3971                                            conf->bssid);
3972                 }
3973                 if (priv->ibss_beacon)
3974                         dev_kfree_skb(priv->ibss_beacon);
3975
3976                 priv->ibss_beacon = ieee80211_beacon_get(hw, vif);
3977         }
3978
3979         if (iwl_is_rfkill(priv))
3980                 goto done;
3981
3982         if (conf->bssid && !is_zero_ether_addr(conf->bssid) &&
3983             !is_multicast_ether_addr(conf->bssid)) {
3984                 /* If there is currently a HW scan going on in the background
3985                  * then we need to cancel it else the RXON below will fail. */
3986                 if (iwl_scan_cancel_timeout(priv, 100)) {
3987                         IWL_WARN(priv, "Aborted scan still in progress "
3988                                     "after 100ms\n");
3989                         IWL_DEBUG_MAC80211(priv, "leaving:scan abort failed\n");
3990                         mutex_unlock(&priv->mutex);
3991                         return -EAGAIN;
3992                 }
3993                 memcpy(priv->staging_rxon.bssid_addr, conf->bssid, ETH_ALEN);
3994
3995                 /* TODO: Audit driver for usage of these members and see
3996                  * if mac80211 deprecates them (priv->bssid looks like it
3997                  * shouldn't be there, but I haven't scanned the IBSS code
3998                  * to verify) - jpk */
3999                 memcpy(priv->bssid, conf->bssid, ETH_ALEN);
4000
4001                 if (priv->iw_mode == NL80211_IFTYPE_AP)
4002                         iwl3945_config_ap(priv);
4003                 else {
4004                         rc = iwl3945_commit_rxon(priv);
4005                         if ((priv->iw_mode == NL80211_IFTYPE_STATION) && rc)
4006                                 iwl3945_add_station(priv,
4007                                         priv->active_rxon.bssid_addr, 1, 0);
4008                 }
4009
4010         } else {
4011                 iwl_scan_cancel_timeout(priv, 100);
4012                 priv->staging_rxon.filter_flags &= ~RXON_FILTER_ASSOC_MSK;
4013                 iwl3945_commit_rxon(priv);
4014         }
4015
4016  done:
4017         IWL_DEBUG_MAC80211(priv, "leave\n");
4018         mutex_unlock(&priv->mutex);
4019
4020         return 0;
4021 }
4022
4023 static void iwl3945_mac_remove_interface(struct ieee80211_hw *hw,
4024                                      struct ieee80211_if_init_conf *conf)
4025 {
4026         struct iwl_priv *priv = hw->priv;
4027
4028         IWL_DEBUG_MAC80211(priv, "enter\n");
4029
4030         mutex_lock(&priv->mutex);
4031
4032         if (iwl_is_ready_rf(priv)) {
4033                 iwl_scan_cancel_timeout(priv, 100);
4034                 priv->staging_rxon.filter_flags &= ~RXON_FILTER_ASSOC_MSK;
4035                 iwl3945_commit_rxon(priv);
4036         }
4037         if (priv->vif == conf->vif) {
4038                 priv->vif = NULL;
4039                 memset(priv->bssid, 0, ETH_ALEN);
4040         }
4041         mutex_unlock(&priv->mutex);
4042
4043         IWL_DEBUG_MAC80211(priv, "leave\n");
4044 }
4045
4046 #define IWL_DELAY_NEXT_SCAN_AFTER_ASSOC (HZ*6)
4047
4048 static void iwl3945_bss_info_changed(struct ieee80211_hw *hw,
4049                                      struct ieee80211_vif *vif,
4050                                      struct ieee80211_bss_conf *bss_conf,
4051                                      u32 changes)
4052 {
4053         struct iwl_priv *priv = hw->priv;
4054
4055         IWL_DEBUG_MAC80211(priv, "changes = 0x%X\n", changes);
4056
4057         if (changes & BSS_CHANGED_ERP_PREAMBLE) {
4058                 IWL_DEBUG_MAC80211(priv, "ERP_PREAMBLE %d\n",
4059                                    bss_conf->use_short_preamble);
4060                 if (bss_conf->use_short_preamble)
4061                         priv->staging_rxon.flags |= RXON_FLG_SHORT_PREAMBLE_MSK;
4062                 else
4063                         priv->staging_rxon.flags &=
4064                                 ~RXON_FLG_SHORT_PREAMBLE_MSK;
4065         }
4066
4067         if (changes & BSS_CHANGED_ERP_CTS_PROT) {
4068                 IWL_DEBUG_MAC80211(priv, "ERP_CTS %d\n",
4069                                    bss_conf->use_cts_prot);
4070                 if (bss_conf->use_cts_prot && (priv->band != IEEE80211_BAND_5GHZ))
4071                         priv->staging_rxon.flags |= RXON_FLG_TGG_PROTECT_MSK;
4072                 else
4073                         priv->staging_rxon.flags &= ~RXON_FLG_TGG_PROTECT_MSK;
4074         }
4075
4076         if (changes & BSS_CHANGED_ASSOC) {
4077                 IWL_DEBUG_MAC80211(priv, "ASSOC %d\n", bss_conf->assoc);
4078                 /* This should never happen as this function should
4079                  * never be called from interrupt context. */
4080                 if (WARN_ON_ONCE(in_interrupt()))
4081                         return;
4082                 if (bss_conf->assoc) {
4083                         priv->assoc_id = bss_conf->aid;
4084                         priv->beacon_int = bss_conf->beacon_int;
4085                         priv->timestamp = bss_conf->timestamp;
4086                         priv->assoc_capability = bss_conf->assoc_capability;
4087                         priv->power_data.dtim_period = bss_conf->dtim_period;
4088                         priv->next_scan_jiffies = jiffies +
4089                                         IWL_DELAY_NEXT_SCAN_AFTER_ASSOC;
4090                         mutex_lock(&priv->mutex);
4091                         iwl3945_post_associate(priv);
4092                         mutex_unlock(&priv->mutex);
4093                 } else {
4094                         priv->assoc_id = 0;
4095                         IWL_DEBUG_MAC80211(priv,
4096                                         "DISASSOC %d\n", bss_conf->assoc);
4097                 }
4098         } else if (changes && iwl_is_associated(priv) && priv->assoc_id) {
4099                         IWL_DEBUG_MAC80211(priv,
4100                                         "Associated Changes %d\n", changes);
4101                         iwl3945_send_rxon_assoc(priv);
4102         }
4103
4104 }
4105
4106 static int iwl3945_mac_set_key(struct ieee80211_hw *hw, enum set_key_cmd cmd,
4107                                struct ieee80211_vif *vif,
4108                                struct ieee80211_sta *sta,
4109                                struct ieee80211_key_conf *key)
4110 {
4111         struct iwl_priv *priv = hw->priv;
4112         const u8 *addr;
4113         int ret;
4114         u8 sta_id;
4115
4116         IWL_DEBUG_MAC80211(priv, "enter\n");
4117
4118         if (iwl3945_mod_params.sw_crypto) {
4119                 IWL_DEBUG_MAC80211(priv, "leave - hwcrypto disabled\n");
4120                 return -EOPNOTSUPP;
4121         }
4122
4123         addr = sta ? sta->addr : iwl_bcast_addr;
4124         sta_id = iwl3945_hw_find_station(priv, addr);
4125         if (sta_id == IWL_INVALID_STATION) {
4126                 IWL_DEBUG_MAC80211(priv, "leave - %pM not in station map.\n",
4127                                    addr);
4128                 return -EINVAL;
4129         }
4130
4131         mutex_lock(&priv->mutex);
4132
4133         iwl_scan_cancel_timeout(priv, 100);
4134
4135         switch (cmd) {
4136         case  SET_KEY:
4137                 ret = iwl3945_update_sta_key_info(priv, key, sta_id);
4138                 if (!ret) {
4139                         iwl_set_rxon_hwcrypto(priv, 1);
4140                         iwl3945_commit_rxon(priv);
4141                         key->hw_key_idx = sta_id;
4142                         IWL_DEBUG_MAC80211(priv,
4143                                 "set_key success, using hwcrypto\n");
4144                         key->flags |= IEEE80211_KEY_FLAG_GENERATE_IV;
4145                 }
4146                 break;
4147         case DISABLE_KEY:
4148                 ret = iwl3945_clear_sta_key_info(priv, sta_id);
4149                 if (!ret) {
4150                         iwl_set_rxon_hwcrypto(priv, 0);
4151                         iwl3945_commit_rxon(priv);
4152                         IWL_DEBUG_MAC80211(priv, "disable hwcrypto key\n");
4153                 }
4154                 break;
4155         default:
4156                 ret = -EINVAL;
4157         }
4158
4159         IWL_DEBUG_MAC80211(priv, "leave\n");
4160         mutex_unlock(&priv->mutex);
4161
4162         return ret;
4163 }
4164
4165 static int iwl3945_mac_conf_tx(struct ieee80211_hw *hw, u16 queue,
4166                            const struct ieee80211_tx_queue_params *params)
4167 {
4168         struct iwl_priv *priv = hw->priv;
4169         unsigned long flags;
4170         int q;
4171
4172         IWL_DEBUG_MAC80211(priv, "enter\n");
4173
4174         if (!iwl_is_ready_rf(priv)) {
4175                 IWL_DEBUG_MAC80211(priv, "leave - RF not ready\n");
4176                 return -EIO;
4177         }
4178
4179         if (queue >= AC_NUM) {
4180                 IWL_DEBUG_MAC80211(priv, "leave - queue >= AC_NUM %d\n", queue);
4181                 return 0;
4182         }
4183
4184         q = AC_NUM - 1 - queue;
4185
4186         spin_lock_irqsave(&priv->lock, flags);
4187
4188         priv->qos_data.def_qos_parm.ac[q].cw_min = cpu_to_le16(params->cw_min);
4189         priv->qos_data.def_qos_parm.ac[q].cw_max = cpu_to_le16(params->cw_max);
4190         priv->qos_data.def_qos_parm.ac[q].aifsn = params->aifs;
4191         priv->qos_data.def_qos_parm.ac[q].edca_txop =
4192                         cpu_to_le16((params->txop * 32));
4193
4194         priv->qos_data.def_qos_parm.ac[q].reserved1 = 0;
4195         priv->qos_data.qos_active = 1;
4196
4197         spin_unlock_irqrestore(&priv->lock, flags);
4198
4199         mutex_lock(&priv->mutex);
4200         if (priv->iw_mode == NL80211_IFTYPE_AP)
4201                 iwl3945_activate_qos(priv, 1);
4202         else if (priv->assoc_id && iwl_is_associated(priv))
4203                 iwl3945_activate_qos(priv, 0);
4204
4205         mutex_unlock(&priv->mutex);
4206
4207         IWL_DEBUG_MAC80211(priv, "leave\n");
4208         return 0;
4209 }
4210
4211 static int iwl3945_mac_get_tx_stats(struct ieee80211_hw *hw,
4212                                 struct ieee80211_tx_queue_stats *stats)
4213 {
4214         struct iwl_priv *priv = hw->priv;
4215         int i, avail;
4216         struct iwl_tx_queue *txq;
4217         struct iwl_queue *q;
4218         unsigned long flags;
4219
4220         IWL_DEBUG_MAC80211(priv, "enter\n");
4221
4222         if (!iwl_is_ready_rf(priv)) {
4223                 IWL_DEBUG_MAC80211(priv, "leave - RF not ready\n");
4224                 return -EIO;
4225         }
4226
4227         spin_lock_irqsave(&priv->lock, flags);
4228
4229         for (i = 0; i < AC_NUM; i++) {
4230                 txq = &priv->txq[i];
4231                 q = &txq->q;
4232                 avail = iwl_queue_space(q);
4233
4234                 stats[i].len = q->n_window - avail;
4235                 stats[i].limit = q->n_window - q->high_mark;
4236                 stats[i].count = q->n_window;
4237
4238         }
4239         spin_unlock_irqrestore(&priv->lock, flags);
4240
4241         IWL_DEBUG_MAC80211(priv, "leave\n");
4242
4243         return 0;
4244 }
4245
4246 static void iwl3945_mac_reset_tsf(struct ieee80211_hw *hw)
4247 {
4248         struct iwl_priv *priv = hw->priv;
4249         unsigned long flags;
4250
4251         mutex_lock(&priv->mutex);
4252         IWL_DEBUG_MAC80211(priv, "enter\n");
4253
4254         iwl_reset_qos(priv);
4255
4256         spin_lock_irqsave(&priv->lock, flags);
4257         priv->assoc_id = 0;
4258         priv->assoc_capability = 0;
4259
4260         /* new association get rid of ibss beacon skb */
4261         if (priv->ibss_beacon)
4262                 dev_kfree_skb(priv->ibss_beacon);
4263
4264         priv->ibss_beacon = NULL;
4265
4266         priv->beacon_int = priv->hw->conf.beacon_int;
4267         priv->timestamp = 0;
4268         if ((priv->iw_mode == NL80211_IFTYPE_STATION))
4269                 priv->beacon_int = 0;
4270
4271         spin_unlock_irqrestore(&priv->lock, flags);
4272
4273         if (!iwl_is_ready_rf(priv)) {
4274                 IWL_DEBUG_MAC80211(priv, "leave - not ready\n");
4275                 mutex_unlock(&priv->mutex);
4276                 return;
4277         }
4278
4279         /* we are restarting association process
4280          * clear RXON_FILTER_ASSOC_MSK bit
4281         */
4282         if (priv->iw_mode != NL80211_IFTYPE_AP) {
4283                 iwl_scan_cancel_timeout(priv, 100);
4284                 priv->staging_rxon.filter_flags &= ~RXON_FILTER_ASSOC_MSK;
4285                 iwl3945_commit_rxon(priv);
4286         }
4287
4288         /* Per mac80211.h: This is only used in IBSS mode... */
4289         if (priv->iw_mode != NL80211_IFTYPE_ADHOC) {
4290
4291                 IWL_DEBUG_MAC80211(priv, "leave - not in IBSS\n");
4292                 mutex_unlock(&priv->mutex);
4293                 return;
4294         }
4295
4296         iwl_set_rate(priv);
4297
4298         mutex_unlock(&priv->mutex);
4299
4300         IWL_DEBUG_MAC80211(priv, "leave\n");
4301
4302 }
4303
4304 static int iwl3945_mac_beacon_update(struct ieee80211_hw *hw, struct sk_buff *skb)
4305 {
4306         struct iwl_priv *priv = hw->priv;
4307         unsigned long flags;
4308         __le64 timestamp;
4309
4310         IWL_DEBUG_MAC80211(priv, "enter\n");
4311
4312         if (!iwl_is_ready_rf(priv)) {
4313                 IWL_DEBUG_MAC80211(priv, "leave - RF not ready\n");
4314                 return -EIO;
4315         }
4316
4317         if (priv->iw_mode != NL80211_IFTYPE_ADHOC) {
4318                 IWL_DEBUG_MAC80211(priv, "leave - not IBSS\n");
4319                 return -EIO;
4320         }
4321
4322         spin_lock_irqsave(&priv->lock, flags);
4323
4324         if (priv->ibss_beacon)
4325                 dev_kfree_skb(priv->ibss_beacon);
4326
4327         priv->ibss_beacon = skb;
4328
4329         priv->assoc_id = 0;
4330         timestamp = ((struct ieee80211_mgmt *)skb->data)->u.beacon.timestamp;
4331         priv->timestamp = le64_to_cpu(timestamp);
4332
4333         IWL_DEBUG_MAC80211(priv, "leave\n");
4334         spin_unlock_irqrestore(&priv->lock, flags);
4335
4336         iwl_reset_qos(priv);
4337
4338         iwl3945_post_associate(priv);
4339
4340
4341         return 0;
4342 }
4343
4344 /*****************************************************************************
4345  *
4346  * sysfs attributes
4347  *
4348  *****************************************************************************/
4349
4350 #ifdef CONFIG_IWLWIFI_DEBUG
4351
4352 /*
4353  * The following adds a new attribute to the sysfs representation
4354  * of this device driver (i.e. a new file in /sys/bus/pci/drivers/iwl/)
4355  * used for controlling the debug level.
4356  *
4357  * See the level definitions in iwl for details.
4358  */
4359 static ssize_t show_debug_level(struct device *d,
4360                                 struct device_attribute *attr, char *buf)
4361 {
4362         struct iwl_priv *priv = d->driver_data;
4363
4364         return sprintf(buf, "0x%08X\n", priv->debug_level);
4365 }
4366 static ssize_t store_debug_level(struct device *d,
4367                                 struct device_attribute *attr,
4368                                  const char *buf, size_t count)
4369 {
4370         struct iwl_priv *priv = d->driver_data;
4371         unsigned long val;
4372         int ret;
4373
4374         ret = strict_strtoul(buf, 0, &val);
4375         if (ret)
4376                 IWL_INFO(priv, "%s is not in hex or decimal form.\n", buf);
4377         else
4378                 priv->debug_level = val;
4379
4380         return strnlen(buf, count);
4381 }
4382
4383 static DEVICE_ATTR(debug_level, S_IWUSR | S_IRUGO,
4384                         show_debug_level, store_debug_level);
4385
4386 #endif /* CONFIG_IWLWIFI_DEBUG */
4387
4388 static ssize_t show_temperature(struct device *d,
4389                                 struct device_attribute *attr, char *buf)
4390 {
4391         struct iwl_priv *priv = (struct iwl_priv *)d->driver_data;
4392
4393         if (!iwl_is_alive(priv))
4394                 return -EAGAIN;
4395
4396         return sprintf(buf, "%d\n", iwl3945_hw_get_temperature(priv));
4397 }
4398
4399 static DEVICE_ATTR(temperature, S_IRUGO, show_temperature, NULL);
4400
4401 static ssize_t show_tx_power(struct device *d,
4402                              struct device_attribute *attr, char *buf)
4403 {
4404         struct iwl_priv *priv = (struct iwl_priv *)d->driver_data;
4405         return sprintf(buf, "%d\n", priv->tx_power_user_lmt);
4406 }
4407
4408 static ssize_t store_tx_power(struct device *d,
4409                               struct device_attribute *attr,
4410                               const char *buf, size_t count)
4411 {
4412         struct iwl_priv *priv = (struct iwl_priv *)d->driver_data;
4413         char *p = (char *)buf;
4414         u32 val;
4415
4416         val = simple_strtoul(p, &p, 10);
4417         if (p == buf)
4418                 IWL_INFO(priv, ": %s is not in decimal form.\n", buf);
4419         else
4420                 iwl3945_hw_reg_set_txpower(priv, val);
4421
4422         return count;
4423 }
4424
4425 static DEVICE_ATTR(tx_power, S_IWUSR | S_IRUGO, show_tx_power, store_tx_power);
4426
4427 static ssize_t show_flags(struct device *d,
4428                           struct device_attribute *attr, char *buf)
4429 {
4430         struct iwl_priv *priv = (struct iwl_priv *)d->driver_data;
4431
4432         return sprintf(buf, "0x%04X\n", priv->active_rxon.flags);
4433 }
4434
4435 static ssize_t store_flags(struct device *d,
4436                            struct device_attribute *attr,
4437                            const char *buf, size_t count)
4438 {
4439         struct iwl_priv *priv = (struct iwl_priv *)d->driver_data;
4440         u32 flags = simple_strtoul(buf, NULL, 0);
4441
4442         mutex_lock(&priv->mutex);
4443         if (le32_to_cpu(priv->staging_rxon.flags) != flags) {
4444                 /* Cancel any currently running scans... */
4445                 if (iwl_scan_cancel_timeout(priv, 100))
4446                         IWL_WARN(priv, "Could not cancel scan.\n");
4447                 else {
4448                         IWL_DEBUG_INFO(priv, "Committing rxon.flags = 0x%04X\n",
4449                                        flags);
4450                         priv->staging_rxon.flags = cpu_to_le32(flags);
4451                         iwl3945_commit_rxon(priv);
4452                 }
4453         }
4454         mutex_unlock(&priv->mutex);
4455
4456         return count;
4457 }
4458
4459 static DEVICE_ATTR(flags, S_IWUSR | S_IRUGO, show_flags, store_flags);
4460
4461 static ssize_t show_filter_flags(struct device *d,
4462                                  struct device_attribute *attr, char *buf)
4463 {
4464         struct iwl_priv *priv = (struct iwl_priv *)d->driver_data;
4465
4466         return sprintf(buf, "0x%04X\n",
4467                 le32_to_cpu(priv->active_rxon.filter_flags));
4468 }
4469
4470 static ssize_t store_filter_flags(struct device *d,
4471                                   struct device_attribute *attr,
4472                                   const char *buf, size_t count)
4473 {
4474         struct iwl_priv *priv = (struct iwl_priv *)d->driver_data;
4475         u32 filter_flags = simple_strtoul(buf, NULL, 0);
4476
4477         mutex_lock(&priv->mutex);
4478         if (le32_to_cpu(priv->staging_rxon.filter_flags) != filter_flags) {
4479                 /* Cancel any currently running scans... */
4480                 if (iwl_scan_cancel_timeout(priv, 100))
4481                         IWL_WARN(priv, "Could not cancel scan.\n");
4482                 else {
4483                         IWL_DEBUG_INFO(priv, "Committing rxon.filter_flags = "
4484                                        "0x%04X\n", filter_flags);
4485                         priv->staging_rxon.filter_flags =
4486                                 cpu_to_le32(filter_flags);
4487                         iwl3945_commit_rxon(priv);
4488                 }
4489         }
4490         mutex_unlock(&priv->mutex);
4491
4492         return count;
4493 }
4494
4495 static DEVICE_ATTR(filter_flags, S_IWUSR | S_IRUGO, show_filter_flags,
4496                    store_filter_flags);
4497
4498 #ifdef CONFIG_IWL3945_SPECTRUM_MEASUREMENT
4499
4500 static ssize_t show_measurement(struct device *d,
4501                                 struct device_attribute *attr, char *buf)
4502 {
4503         struct iwl_priv *priv = dev_get_drvdata(d);
4504         struct iwl_spectrum_notification measure_report;
4505         u32 size = sizeof(measure_report), len = 0, ofs = 0;
4506         u8 *data = (u8 *)&measure_report;
4507         unsigned long flags;
4508
4509         spin_lock_irqsave(&priv->lock, flags);
4510         if (!(priv->measurement_status & MEASUREMENT_READY)) {
4511                 spin_unlock_irqrestore(&priv->lock, flags);
4512                 return 0;
4513         }
4514         memcpy(&measure_report, &priv->measure_report, size);
4515         priv->measurement_status = 0;
4516         spin_unlock_irqrestore(&priv->lock, flags);
4517
4518         while (size && (PAGE_SIZE - len)) {
4519                 hex_dump_to_buffer(data + ofs, size, 16, 1, buf + len,
4520                                    PAGE_SIZE - len, 1);
4521                 len = strlen(buf);
4522                 if (PAGE_SIZE - len)
4523                         buf[len++] = '\n';
4524
4525                 ofs += 16;
4526                 size -= min(size, 16U);
4527         }
4528
4529         return len;
4530 }
4531
4532 static ssize_t store_measurement(struct device *d,
4533                                  struct device_attribute *attr,
4534                                  const char *buf, size_t count)
4535 {
4536         struct iwl_priv *priv = dev_get_drvdata(d);
4537         struct ieee80211_measurement_params params = {
4538                 .channel = le16_to_cpu(priv->active_rxon.channel),
4539                 .start_time = cpu_to_le64(priv->last_tsf),
4540                 .duration = cpu_to_le16(1),
4541         };
4542         u8 type = IWL_MEASURE_BASIC;
4543         u8 buffer[32];
4544         u8 channel;
4545
4546         if (count) {
4547                 char *p = buffer;
4548                 strncpy(buffer, buf, min(sizeof(buffer), count));
4549                 channel = simple_strtoul(p, NULL, 0);
4550                 if (channel)
4551                         params.channel = channel;
4552
4553                 p = buffer;
4554                 while (*p && *p != ' ')
4555                         p++;
4556                 if (*p)
4557                         type = simple_strtoul(p + 1, NULL, 0);
4558         }
4559
4560         IWL_DEBUG_INFO(priv, "Invoking measurement of type %d on "
4561                        "channel %d (for '%s')\n", type, params.channel, buf);
4562         iwl3945_get_measurement(priv, &params, type);
4563
4564         return count;
4565 }
4566
4567 static DEVICE_ATTR(measurement, S_IRUSR | S_IWUSR,
4568                    show_measurement, store_measurement);
4569 #endif /* CONFIG_IWL3945_SPECTRUM_MEASUREMENT */
4570
4571 static ssize_t store_retry_rate(struct device *d,
4572                                 struct device_attribute *attr,
4573                                 const char *buf, size_t count)
4574 {
4575         struct iwl_priv *priv = dev_get_drvdata(d);
4576
4577         priv->retry_rate = simple_strtoul(buf, NULL, 0);
4578         if (priv->retry_rate <= 0)
4579                 priv->retry_rate = 1;
4580
4581         return count;
4582 }
4583
4584 static ssize_t show_retry_rate(struct device *d,
4585                                struct device_attribute *attr, char *buf)
4586 {
4587         struct iwl_priv *priv = dev_get_drvdata(d);
4588         return sprintf(buf, "%d", priv->retry_rate);
4589 }
4590
4591 static DEVICE_ATTR(retry_rate, S_IWUSR | S_IRUSR, show_retry_rate,
4592                    store_retry_rate);
4593
4594
4595 static ssize_t store_power_level(struct device *d,
4596                                  struct device_attribute *attr,
4597                                  const char *buf, size_t count)
4598 {
4599         struct iwl_priv *priv = dev_get_drvdata(d);
4600         int ret;
4601         unsigned long mode;
4602
4603
4604         mutex_lock(&priv->mutex);
4605
4606         if (!iwl_is_ready(priv)) {
4607                 ret = -EAGAIN;
4608                 goto out;
4609         }
4610
4611         ret = strict_strtoul(buf, 10, &mode);
4612         if (ret)
4613                 goto out;
4614
4615         ret = iwl_power_set_user_mode(priv, mode);
4616         if (ret) {
4617                 IWL_DEBUG_MAC80211(priv, "failed setting power mode.\n");
4618                 goto out;
4619         }
4620         ret = count;
4621
4622  out:
4623         mutex_unlock(&priv->mutex);
4624         return ret;
4625 }
4626
4627 static ssize_t show_power_level(struct device *d,
4628                                 struct device_attribute *attr, char *buf)
4629 {
4630         struct iwl_priv *priv = dev_get_drvdata(d);
4631         int mode = priv->power_data.user_power_setting;
4632         int system = priv->power_data.system_power_setting;
4633         int level = priv->power_data.power_mode;
4634         char *p = buf;
4635
4636         switch (system) {
4637         case IWL_POWER_SYS_AUTO:
4638                 p += sprintf(p, "SYSTEM:auto");
4639                 break;
4640         case IWL_POWER_SYS_AC:
4641                 p += sprintf(p, "SYSTEM:ac");
4642                 break;
4643         case IWL_POWER_SYS_BATTERY:
4644                 p += sprintf(p, "SYSTEM:battery");
4645                 break;
4646         }
4647
4648         p += sprintf(p, "\tMODE:%s", (mode < IWL_POWER_AUTO) ?
4649                         "fixed" : "auto");
4650         p += sprintf(p, "\tINDEX:%d", level);
4651         p += sprintf(p, "\n");
4652         return p - buf + 1;
4653 }
4654
4655 static DEVICE_ATTR(power_level, S_IWUSR | S_IRUSR,
4656                    show_power_level, store_power_level);
4657
4658 #define MAX_WX_STRING 80
4659
4660 /* Values are in microsecond */
4661 static const s32 timeout_duration[] = {
4662         350000,
4663         250000,
4664         75000,
4665         37000,
4666         25000,
4667 };
4668 static const s32 period_duration[] = {
4669         400000,
4670         700000,
4671         1000000,
4672         1000000,
4673         1000000
4674 };
4675
4676 static ssize_t show_channels(struct device *d,
4677                              struct device_attribute *attr, char *buf)
4678 {
4679         /* all this shit doesn't belong into sysfs anyway */
4680         return 0;
4681 }
4682
4683 static DEVICE_ATTR(channels, S_IRUSR, show_channels, NULL);
4684
4685 static ssize_t show_statistics(struct device *d,
4686                                struct device_attribute *attr, char *buf)
4687 {
4688         struct iwl_priv *priv = dev_get_drvdata(d);
4689         u32 size = sizeof(struct iwl3945_notif_statistics);
4690         u32 len = 0, ofs = 0;
4691         u8 *data = (u8 *)&priv->statistics_39;
4692         int rc = 0;
4693
4694         if (!iwl_is_alive(priv))
4695                 return -EAGAIN;
4696
4697         mutex_lock(&priv->mutex);
4698         rc = iwl_send_statistics_request(priv, 0);
4699         mutex_unlock(&priv->mutex);
4700
4701         if (rc) {
4702                 len = sprintf(buf,
4703                               "Error sending statistics request: 0x%08X\n", rc);
4704                 return len;
4705         }
4706
4707         while (size && (PAGE_SIZE - len)) {
4708                 hex_dump_to_buffer(data + ofs, size, 16, 1, buf + len,
4709                                    PAGE_SIZE - len, 1);
4710                 len = strlen(buf);
4711                 if (PAGE_SIZE - len)
4712                         buf[len++] = '\n';
4713
4714                 ofs += 16;
4715                 size -= min(size, 16U);
4716         }
4717
4718         return len;
4719 }
4720
4721 static DEVICE_ATTR(statistics, S_IRUGO, show_statistics, NULL);
4722
4723 static ssize_t show_antenna(struct device *d,
4724                             struct device_attribute *attr, char *buf)
4725 {
4726         struct iwl_priv *priv = dev_get_drvdata(d);
4727
4728         if (!iwl_is_alive(priv))
4729                 return -EAGAIN;
4730
4731         return sprintf(buf, "%d\n", iwl3945_mod_params.antenna);
4732 }
4733
4734 static ssize_t store_antenna(struct device *d,
4735                              struct device_attribute *attr,
4736                              const char *buf, size_t count)
4737 {
4738         struct iwl_priv *priv __maybe_unused = dev_get_drvdata(d);
4739         int ant;
4740
4741         if (count == 0)
4742                 return 0;
4743
4744         if (sscanf(buf, "%1i", &ant) != 1) {
4745                 IWL_DEBUG_INFO(priv, "not in hex or decimal form.\n");
4746                 return count;
4747         }
4748
4749         if ((ant >= 0) && (ant <= 2)) {
4750                 IWL_DEBUG_INFO(priv, "Setting antenna select to %d.\n", ant);
4751                 iwl3945_mod_params.antenna = (enum iwl3945_antenna)ant;
4752         } else
4753                 IWL_DEBUG_INFO(priv, "Bad antenna select value %d.\n", ant);
4754
4755
4756         return count;
4757 }
4758
4759 static DEVICE_ATTR(antenna, S_IWUSR | S_IRUGO, show_antenna, store_antenna);
4760
4761 static ssize_t show_status(struct device *d,
4762                            struct device_attribute *attr, char *buf)
4763 {
4764         struct iwl_priv *priv = (struct iwl_priv *)d->driver_data;
4765         if (!iwl_is_alive(priv))
4766                 return -EAGAIN;
4767         return sprintf(buf, "0x%08x\n", (int)priv->status);
4768 }
4769
4770 static DEVICE_ATTR(status, S_IRUGO, show_status, NULL);
4771
4772 static ssize_t dump_error_log(struct device *d,
4773                               struct device_attribute *attr,
4774                               const char *buf, size_t count)
4775 {
4776         char *p = (char *)buf;
4777
4778         if (p[0] == '1')
4779                 iwl3945_dump_nic_error_log((struct iwl_priv *)d->driver_data);
4780
4781         return strnlen(buf, count);
4782 }
4783
4784 static DEVICE_ATTR(dump_errors, S_IWUSR, NULL, dump_error_log);
4785
4786 static ssize_t dump_event_log(struct device *d,
4787                               struct device_attribute *attr,
4788                               const char *buf, size_t count)
4789 {
4790         char *p = (char *)buf;
4791
4792         if (p[0] == '1')
4793                 iwl3945_dump_nic_event_log((struct iwl_priv *)d->driver_data);
4794
4795         return strnlen(buf, count);
4796 }
4797
4798 static DEVICE_ATTR(dump_events, S_IWUSR, NULL, dump_event_log);
4799
4800 /*****************************************************************************
4801  *
4802  * driver setup and tear down
4803  *
4804  *****************************************************************************/
4805
4806 static void iwl3945_setup_deferred_work(struct iwl_priv *priv)
4807 {
4808         priv->workqueue = create_singlethread_workqueue(DRV_NAME);
4809
4810         init_waitqueue_head(&priv->wait_command_queue);
4811
4812         INIT_WORK(&priv->up, iwl3945_bg_up);
4813         INIT_WORK(&priv->restart, iwl3945_bg_restart);
4814         INIT_WORK(&priv->rx_replenish, iwl3945_bg_rx_replenish);
4815         INIT_WORK(&priv->rf_kill, iwl_bg_rf_kill);
4816         INIT_WORK(&priv->beacon_update, iwl3945_bg_beacon_update);
4817         INIT_DELAYED_WORK(&priv->init_alive_start, iwl3945_bg_init_alive_start);
4818         INIT_DELAYED_WORK(&priv->alive_start, iwl3945_bg_alive_start);
4819         INIT_DELAYED_WORK(&priv->rfkill_poll, iwl3945_rfkill_poll);
4820         INIT_WORK(&priv->scan_completed, iwl_bg_scan_completed);
4821         INIT_WORK(&priv->request_scan, iwl3945_bg_request_scan);
4822         INIT_WORK(&priv->abort_scan, iwl_bg_abort_scan);
4823         INIT_DELAYED_WORK(&priv->scan_check, iwl_bg_scan_check);
4824
4825         iwl3945_hw_setup_deferred_work(priv);
4826
4827         tasklet_init(&priv->irq_tasklet, (void (*)(unsigned long))
4828                      iwl3945_irq_tasklet, (unsigned long)priv);
4829 }
4830
4831 static void iwl3945_cancel_deferred_work(struct iwl_priv *priv)
4832 {
4833         iwl3945_hw_cancel_deferred_work(priv);
4834
4835         cancel_delayed_work_sync(&priv->init_alive_start);
4836         cancel_delayed_work(&priv->scan_check);
4837         cancel_delayed_work(&priv->alive_start);
4838         cancel_work_sync(&priv->beacon_update);
4839 }
4840
4841 static struct attribute *iwl3945_sysfs_entries[] = {
4842         &dev_attr_antenna.attr,
4843         &dev_attr_channels.attr,
4844         &dev_attr_dump_errors.attr,
4845         &dev_attr_dump_events.attr,
4846         &dev_attr_flags.attr,
4847         &dev_attr_filter_flags.attr,
4848 #ifdef CONFIG_IWL3945_SPECTRUM_MEASUREMENT
4849         &dev_attr_measurement.attr,
4850 #endif
4851         &dev_attr_power_level.attr,
4852         &dev_attr_retry_rate.attr,
4853         &dev_attr_statistics.attr,
4854         &dev_attr_status.attr,
4855         &dev_attr_temperature.attr,
4856         &dev_attr_tx_power.attr,
4857 #ifdef CONFIG_IWLWIFI_DEBUG
4858         &dev_attr_debug_level.attr,
4859 #endif
4860         NULL
4861 };
4862
4863 static struct attribute_group iwl3945_attribute_group = {
4864         .name = NULL,           /* put in device directory */
4865         .attrs = iwl3945_sysfs_entries,
4866 };
4867
4868 static struct ieee80211_ops iwl3945_hw_ops = {
4869         .tx = iwl3945_mac_tx,
4870         .start = iwl3945_mac_start,
4871         .stop = iwl3945_mac_stop,
4872         .add_interface = iwl3945_mac_add_interface,
4873         .remove_interface = iwl3945_mac_remove_interface,
4874         .config = iwl3945_mac_config,
4875         .config_interface = iwl3945_mac_config_interface,
4876         .configure_filter = iwl_configure_filter,
4877         .set_key = iwl3945_mac_set_key,
4878         .get_tx_stats = iwl3945_mac_get_tx_stats,
4879         .conf_tx = iwl3945_mac_conf_tx,
4880         .reset_tsf = iwl3945_mac_reset_tsf,
4881         .bss_info_changed = iwl3945_bss_info_changed,
4882         .hw_scan = iwl_mac_hw_scan
4883 };
4884
4885 static int iwl3945_init_drv(struct iwl_priv *priv)
4886 {
4887         int ret;
4888         struct iwl3945_eeprom *eeprom = (struct iwl3945_eeprom *)priv->eeprom;
4889
4890         priv->retry_rate = 1;
4891         priv->ibss_beacon = NULL;
4892
4893         spin_lock_init(&priv->lock);
4894         spin_lock_init(&priv->power_data.lock);
4895         spin_lock_init(&priv->sta_lock);
4896         spin_lock_init(&priv->hcmd_lock);
4897
4898         INIT_LIST_HEAD(&priv->free_frames);
4899
4900         mutex_init(&priv->mutex);
4901
4902         /* Clear the driver's (not device's) station table */
4903         iwl3945_clear_stations_table(priv);
4904
4905         priv->data_retry_limit = -1;
4906         priv->ieee_channels = NULL;
4907         priv->ieee_rates = NULL;
4908         priv->band = IEEE80211_BAND_2GHZ;
4909
4910         priv->iw_mode = NL80211_IFTYPE_STATION;
4911
4912         iwl_reset_qos(priv);
4913
4914         priv->qos_data.qos_active = 0;
4915         priv->qos_data.qos_cap.val = 0;
4916
4917         priv->rates_mask = IWL_RATES_MASK;
4918         /* If power management is turned on, default to CAM mode */
4919         priv->power_mode = IWL_POWER_MODE_CAM;
4920         priv->tx_power_user_lmt = IWL_DEFAULT_TX_POWER;
4921
4922         if (eeprom->version < EEPROM_3945_EEPROM_VERSION) {
4923                 IWL_WARN(priv, "Unsupported EEPROM version: 0x%04X\n",
4924                          eeprom->version);
4925                 ret = -EINVAL;
4926                 goto err;
4927         }
4928         ret = iwl_init_channel_map(priv);
4929         if (ret) {
4930                 IWL_ERR(priv, "initializing regulatory failed: %d\n", ret);
4931                 goto err;
4932         }
4933
4934         /* Set up txpower settings in driver for all channels */
4935         if (iwl3945_txpower_set_from_eeprom(priv)) {
4936                 ret = -EIO;
4937                 goto err_free_channel_map;
4938         }
4939
4940         ret = iwlcore_init_geos(priv);
4941         if (ret) {
4942                 IWL_ERR(priv, "initializing geos failed: %d\n", ret);
4943                 goto err_free_channel_map;
4944         }
4945         iwl3945_init_hw_rates(priv, priv->ieee_rates);
4946
4947         if (priv->bands[IEEE80211_BAND_2GHZ].n_channels)
4948                 priv->hw->wiphy->bands[IEEE80211_BAND_2GHZ] =
4949                         &priv->bands[IEEE80211_BAND_2GHZ];
4950         if (priv->bands[IEEE80211_BAND_5GHZ].n_channels)
4951                 priv->hw->wiphy->bands[IEEE80211_BAND_5GHZ] =
4952                         &priv->bands[IEEE80211_BAND_5GHZ];
4953
4954         return 0;
4955
4956 err_free_channel_map:
4957         iwl_free_channel_map(priv);
4958 err:
4959         return ret;
4960 }
4961
4962 static int iwl3945_pci_probe(struct pci_dev *pdev, const struct pci_device_id *ent)
4963 {
4964         int err = 0;
4965         struct iwl_priv *priv;
4966         struct ieee80211_hw *hw;
4967         struct iwl_cfg *cfg = (struct iwl_cfg *)(ent->driver_data);
4968         struct iwl3945_eeprom *eeprom;
4969         unsigned long flags;
4970
4971         /***********************
4972          * 1. Allocating HW data
4973          * ********************/
4974
4975         /* mac80211 allocates memory for this device instance, including
4976          *   space for this driver's private structure */
4977         hw = iwl_alloc_all(cfg, &iwl3945_hw_ops);
4978         if (hw == NULL) {
4979                 printk(KERN_ERR DRV_NAME "Can not allocate network device\n");
4980                 err = -ENOMEM;
4981                 goto out;
4982         }
4983         priv = hw->priv;
4984         SET_IEEE80211_DEV(hw, &pdev->dev);
4985
4986         if ((iwl3945_mod_params.num_of_queues > IWL39_MAX_NUM_QUEUES) ||
4987              (iwl3945_mod_params.num_of_queues < IWL_MIN_NUM_QUEUES)) {
4988                 IWL_ERR(priv,
4989                         "invalid queues_num, should be between %d and %d\n",
4990                         IWL_MIN_NUM_QUEUES, IWL39_MAX_NUM_QUEUES);
4991                 err = -EINVAL;
4992                 goto out;
4993         }
4994
4995         /*
4996          * Disabling hardware scan means that mac80211 will perform scans
4997          * "the hard way", rather than using device's scan.
4998          */
4999         if (iwl3945_mod_params.disable_hw_scan) {
5000                 IWL_DEBUG_INFO(priv, "Disabling hw_scan\n");
5001                 iwl3945_hw_ops.hw_scan = NULL;
5002         }
5003
5004
5005         IWL_DEBUG_INFO(priv, "*** LOAD DRIVER ***\n");
5006         priv->cfg = cfg;
5007         priv->pci_dev = pdev;
5008
5009 #ifdef CONFIG_IWLWIFI_DEBUG
5010         priv->debug_level = iwl3945_mod_params.debug;
5011         atomic_set(&priv->restrict_refcnt, 0);
5012 #endif
5013         hw->rate_control_algorithm = "iwl-3945-rs";
5014         hw->sta_data_size = sizeof(struct iwl3945_sta_priv);
5015
5016         /* Tell mac80211 our characteristics */
5017         hw->flags = IEEE80211_HW_SIGNAL_DBM |
5018                     IEEE80211_HW_NOISE_DBM;
5019
5020         hw->wiphy->interface_modes =
5021                 BIT(NL80211_IFTYPE_STATION) |
5022                 BIT(NL80211_IFTYPE_ADHOC);
5023
5024         hw->wiphy->custom_regulatory = true;
5025
5026         hw->wiphy->max_scan_ssids = 1;
5027
5028         /* 4 EDCA QOS priorities */
5029         hw->queues = 4;
5030
5031         /***************************
5032          * 2. Initializing PCI bus
5033          * *************************/
5034         if (pci_enable_device(pdev)) {
5035                 err = -ENODEV;
5036                 goto out_ieee80211_free_hw;
5037         }
5038
5039         pci_set_master(pdev);
5040
5041         err = pci_set_dma_mask(pdev, DMA_32BIT_MASK);
5042         if (!err)
5043                 err = pci_set_consistent_dma_mask(pdev, DMA_32BIT_MASK);
5044         if (err) {
5045                 IWL_WARN(priv, "No suitable DMA available.\n");
5046                 goto out_pci_disable_device;
5047         }
5048
5049         pci_set_drvdata(pdev, priv);
5050         err = pci_request_regions(pdev, DRV_NAME);
5051         if (err)
5052                 goto out_pci_disable_device;
5053
5054         /***********************
5055          * 3. Read REV Register
5056          * ********************/
5057         priv->hw_base = pci_iomap(pdev, 0, 0);
5058         if (!priv->hw_base) {
5059                 err = -ENODEV;
5060                 goto out_pci_release_regions;
5061         }
5062
5063         IWL_DEBUG_INFO(priv, "pci_resource_len = 0x%08llx\n",
5064                         (unsigned long long) pci_resource_len(pdev, 0));
5065         IWL_DEBUG_INFO(priv, "pci_resource_base = %p\n", priv->hw_base);
5066
5067         /* We disable the RETRY_TIMEOUT register (0x41) to keep
5068          * PCI Tx retries from interfering with C3 CPU state */
5069         pci_write_config_byte(pdev, 0x41, 0x00);
5070
5071         /* amp init */
5072         err = priv->cfg->ops->lib->apm_ops.init(priv);
5073         if (err < 0) {
5074                 IWL_DEBUG_INFO(priv, "Failed to init APMG\n");
5075                 goto out_iounmap;
5076         }
5077
5078         /***********************
5079          * 4. Read EEPROM
5080          * ********************/
5081
5082         /* Read the EEPROM */
5083         err = iwl_eeprom_init(priv);
5084         if (err) {
5085                 IWL_ERR(priv, "Unable to init EEPROM\n");
5086                 goto out_remove_sysfs;
5087         }
5088         /* MAC Address location in EEPROM same for 3945/4965 */
5089         eeprom = (struct iwl3945_eeprom *)priv->eeprom;
5090         memcpy(priv->mac_addr, eeprom->mac_address, ETH_ALEN);
5091         IWL_DEBUG_INFO(priv, "MAC address: %pM\n", priv->mac_addr);
5092         SET_IEEE80211_PERM_ADDR(priv->hw, priv->mac_addr);
5093
5094         /***********************
5095          * 5. Setup HW Constants
5096          * ********************/
5097         /* Device-specific setup */
5098         if (iwl3945_hw_set_hw_params(priv)) {
5099                 IWL_ERR(priv, "failed to set hw settings\n");
5100                 goto out_iounmap;
5101         }
5102
5103         /***********************
5104          * 6. Setup priv
5105          * ********************/
5106
5107         err = iwl3945_init_drv(priv);
5108         if (err) {
5109                 IWL_ERR(priv, "initializing driver failed\n");
5110                 goto out_free_geos;
5111         }
5112
5113         IWL_INFO(priv, "Detected Intel Wireless WiFi Link %s\n",
5114                 priv->cfg->name);
5115
5116         /***********************************
5117          * 7. Initialize Module Parameters
5118          * **********************************/
5119
5120         /* Initialize module parameter values here */
5121         /* Disable radio (SW RF KILL) via parameter when loading driver */
5122         if (iwl3945_mod_params.disable) {
5123                 set_bit(STATUS_RF_KILL_SW, &priv->status);
5124                 IWL_DEBUG_INFO(priv, "Radio disabled.\n");
5125         }
5126
5127
5128         /***********************
5129          * 8. Setup Services
5130          * ********************/
5131
5132         spin_lock_irqsave(&priv->lock, flags);
5133         iwl_disable_interrupts(priv);
5134         spin_unlock_irqrestore(&priv->lock, flags);
5135
5136         pci_enable_msi(priv->pci_dev);
5137
5138         err = request_irq(priv->pci_dev->irq, iwl_isr, IRQF_SHARED,
5139                           DRV_NAME, priv);
5140         if (err) {
5141                 IWL_ERR(priv, "Error allocating IRQ %d\n", priv->pci_dev->irq);
5142                 goto out_disable_msi;
5143         }
5144
5145         err = sysfs_create_group(&pdev->dev.kobj, &iwl3945_attribute_group);
5146         if (err) {
5147                 IWL_ERR(priv, "failed to create sysfs device attributes\n");
5148                 goto out_release_irq;
5149         }
5150
5151         iwl_set_rxon_channel(priv,
5152                              &priv->bands[IEEE80211_BAND_2GHZ].channels[5]);
5153         iwl3945_setup_deferred_work(priv);
5154         iwl3945_setup_rx_handlers(priv);
5155
5156         /*********************************
5157          * 9. Setup and Register mac80211
5158          * *******************************/
5159
5160         err = ieee80211_register_hw(priv->hw);
5161         if (err) {
5162                 IWL_ERR(priv, "Failed to register network device: %d\n", err);
5163                 goto  out_remove_sysfs;
5164         }
5165
5166         priv->hw->conf.beacon_int = 100;
5167         priv->mac80211_registered = 1;
5168
5169         err = iwl_rfkill_init(priv);
5170         if (err)
5171                 IWL_ERR(priv, "Unable to initialize RFKILL system. "
5172                                   "Ignoring error: %d\n", err);
5173
5174         /* Start monitoring the killswitch */
5175         queue_delayed_work(priv->workqueue, &priv->rfkill_poll,
5176                            2 * HZ);
5177
5178         return 0;
5179
5180  out_remove_sysfs:
5181         sysfs_remove_group(&pdev->dev.kobj, &iwl3945_attribute_group);
5182  out_free_geos:
5183         iwlcore_free_geos(priv);
5184
5185  out_release_irq:
5186         free_irq(priv->pci_dev->irq, priv);
5187         destroy_workqueue(priv->workqueue);
5188         priv->workqueue = NULL;
5189         iwl3945_unset_hw_params(priv);
5190  out_disable_msi:
5191         pci_disable_msi(priv->pci_dev);
5192  out_iounmap:
5193         pci_iounmap(pdev, priv->hw_base);
5194  out_pci_release_regions:
5195         pci_release_regions(pdev);
5196  out_pci_disable_device:
5197         pci_disable_device(pdev);
5198         pci_set_drvdata(pdev, NULL);
5199  out_ieee80211_free_hw:
5200         ieee80211_free_hw(priv->hw);
5201  out:
5202         return err;
5203 }
5204
5205 static void __devexit iwl3945_pci_remove(struct pci_dev *pdev)
5206 {
5207         struct iwl_priv *priv = pci_get_drvdata(pdev);
5208         unsigned long flags;
5209
5210         if (!priv)
5211                 return;
5212
5213         IWL_DEBUG_INFO(priv, "*** UNLOAD DRIVER ***\n");
5214
5215         set_bit(STATUS_EXIT_PENDING, &priv->status);
5216
5217         if (priv->mac80211_registered) {
5218                 ieee80211_unregister_hw(priv->hw);
5219                 priv->mac80211_registered = 0;
5220         } else {
5221                 iwl3945_down(priv);
5222         }
5223
5224         /* make sure we flush any pending irq or
5225          * tasklet for the driver
5226          */
5227         spin_lock_irqsave(&priv->lock, flags);
5228         iwl_disable_interrupts(priv);
5229         spin_unlock_irqrestore(&priv->lock, flags);
5230
5231         iwl_synchronize_irq(priv);
5232
5233         sysfs_remove_group(&pdev->dev.kobj, &iwl3945_attribute_group);
5234
5235         iwl_rfkill_unregister(priv);
5236         cancel_delayed_work(&priv->rfkill_poll);
5237
5238         iwl3945_dealloc_ucode_pci(priv);
5239
5240         if (priv->rxq.bd)
5241                 iwl_rx_queue_free(priv, &priv->rxq);
5242         iwl3945_hw_txq_ctx_free(priv);
5243
5244         iwl3945_unset_hw_params(priv);
5245         iwl3945_clear_stations_table(priv);
5246
5247         /*netif_stop_queue(dev); */
5248         flush_workqueue(priv->workqueue);
5249
5250         /* ieee80211_unregister_hw calls iwl3945_mac_stop, which flushes
5251          * priv->workqueue... so we can't take down the workqueue
5252          * until now... */
5253         destroy_workqueue(priv->workqueue);
5254         priv->workqueue = NULL;
5255
5256         free_irq(pdev->irq, priv);
5257         pci_disable_msi(pdev);
5258
5259         pci_iounmap(pdev, priv->hw_base);
5260         pci_release_regions(pdev);
5261         pci_disable_device(pdev);
5262         pci_set_drvdata(pdev, NULL);
5263
5264         iwl_free_channel_map(priv);
5265         iwlcore_free_geos(priv);
5266         kfree(priv->scan);
5267         if (priv->ibss_beacon)
5268                 dev_kfree_skb(priv->ibss_beacon);
5269
5270         ieee80211_free_hw(priv->hw);
5271 }
5272
5273 #ifdef CONFIG_PM
5274
5275 static int iwl3945_pci_suspend(struct pci_dev *pdev, pm_message_t state)
5276 {
5277         struct iwl_priv *priv = pci_get_drvdata(pdev);
5278
5279         if (priv->is_open) {
5280                 set_bit(STATUS_IN_SUSPEND, &priv->status);
5281                 iwl3945_mac_stop(priv->hw);
5282                 priv->is_open = 1;
5283         }
5284         pci_save_state(pdev);
5285         pci_disable_device(pdev);
5286         pci_set_power_state(pdev, PCI_D3hot);
5287
5288         return 0;
5289 }
5290
5291 static int iwl3945_pci_resume(struct pci_dev *pdev)
5292 {
5293         struct iwl_priv *priv = pci_get_drvdata(pdev);
5294         int ret;
5295
5296         pci_set_power_state(pdev, PCI_D0);
5297         ret = pci_enable_device(pdev);
5298         if (ret)
5299                 return ret;
5300         pci_restore_state(pdev);
5301
5302         if (priv->is_open)
5303                 iwl3945_mac_start(priv->hw);
5304
5305         clear_bit(STATUS_IN_SUSPEND, &priv->status);
5306         return 0;
5307 }
5308
5309 #endif /* CONFIG_PM */
5310
5311 /*****************************************************************************
5312  *
5313  * driver and module entry point
5314  *
5315  *****************************************************************************/
5316
5317 static struct pci_driver iwl3945_driver = {
5318         .name = DRV_NAME,
5319         .id_table = iwl3945_hw_card_ids,
5320         .probe = iwl3945_pci_probe,
5321         .remove = __devexit_p(iwl3945_pci_remove),
5322 #ifdef CONFIG_PM
5323         .suspend = iwl3945_pci_suspend,
5324         .resume = iwl3945_pci_resume,
5325 #endif
5326 };
5327
5328 static int __init iwl3945_init(void)
5329 {
5330
5331         int ret;
5332         printk(KERN_INFO DRV_NAME ": " DRV_DESCRIPTION ", " DRV_VERSION "\n");
5333         printk(KERN_INFO DRV_NAME ": " DRV_COPYRIGHT "\n");
5334
5335         ret = iwl3945_rate_control_register();
5336         if (ret) {
5337                 printk(KERN_ERR DRV_NAME
5338                        "Unable to register rate control algorithm: %d\n", ret);
5339                 return ret;
5340         }
5341
5342         ret = pci_register_driver(&iwl3945_driver);
5343         if (ret) {
5344                 printk(KERN_ERR DRV_NAME "Unable to initialize PCI module\n");
5345                 goto error_register;
5346         }
5347
5348         return ret;
5349
5350 error_register:
5351         iwl3945_rate_control_unregister();
5352         return ret;
5353 }
5354
5355 static void __exit iwl3945_exit(void)
5356 {
5357         pci_unregister_driver(&iwl3945_driver);
5358         iwl3945_rate_control_unregister();
5359 }
5360
5361 MODULE_FIRMWARE(IWL3945_MODULE_FIRMWARE(IWL3945_UCODE_API_MAX));
5362
5363 module_param_named(antenna, iwl3945_mod_params.antenna, int, 0444);
5364 MODULE_PARM_DESC(antenna, "select antenna (1=Main, 2=Aux, default 0 [both])");
5365 module_param_named(disable, iwl3945_mod_params.disable, int, 0444);
5366 MODULE_PARM_DESC(disable, "manually disable the radio (default 0 [radio on])");
5367 module_param_named(swcrypto, iwl3945_mod_params.sw_crypto, int, 0444);
5368 MODULE_PARM_DESC(swcrypto,
5369                  "using software crypto (default 1 [software])\n");
5370 module_param_named(debug, iwl3945_mod_params.debug, uint, 0444);
5371 MODULE_PARM_DESC(debug, "debug output mask");
5372 module_param_named(disable_hw_scan, iwl3945_mod_params.disable_hw_scan, int, 0444);
5373 MODULE_PARM_DESC(disable_hw_scan, "disable hardware scanning (default 0)");
5374
5375 module_param_named(queues_num, iwl3945_mod_params.num_of_queues, int, 0444);
5376 MODULE_PARM_DESC(queues_num, "number of hw queues.");
5377
5378 module_param_named(fw_restart3945, iwl3945_mod_params.restart_fw, int, 0444);
5379 MODULE_PARM_DESC(fw_restart3945, "restart firmware in case of error");
5380
5381 module_exit(iwl3945_exit);
5382 module_init(iwl3945_init);