cfg80211/nl80211: scanning (and mac80211 update to use it)
[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_scan_initiate(struct iwl_priv *priv)
730 {
731         if (!iwl_is_ready_rf(priv)) {
732                 IWL_DEBUG_SCAN(priv, "Aborting scan due to not ready.\n");
733                 return -EIO;
734         }
735
736         if (test_bit(STATUS_SCANNING, &priv->status)) {
737                 IWL_DEBUG_SCAN(priv, "Scan already in progress.\n");
738                 return -EAGAIN;
739         }
740
741         if (test_bit(STATUS_SCAN_ABORTING, &priv->status)) {
742                 IWL_DEBUG_SCAN(priv, "Scan request while abort pending.  "
743                                "Queuing.\n");
744                 return -EAGAIN;
745         }
746
747         IWL_DEBUG_INFO(priv, "Starting scan...\n");
748         if (priv->cfg->sku & IWL_SKU_G)
749                 priv->scan_bands |= BIT(IEEE80211_BAND_2GHZ);
750         if (priv->cfg->sku & IWL_SKU_A)
751                 priv->scan_bands |= BIT(IEEE80211_BAND_5GHZ);
752         set_bit(STATUS_SCANNING, &priv->status);
753         priv->scan_start = jiffies;
754         priv->scan_pass_start = priv->scan_start;
755
756         queue_work(priv->workqueue, &priv->request_scan);
757
758         return 0;
759 }
760
761 static int iwl3945_set_mode(struct iwl_priv *priv, int mode)
762 {
763         if (mode == NL80211_IFTYPE_ADHOC) {
764                 const struct iwl_channel_info *ch_info;
765
766                 ch_info = iwl_get_channel_info(priv,
767                         priv->band,
768                         le16_to_cpu(priv->staging_rxon.channel));
769
770                 if (!ch_info || !is_channel_ibss(ch_info)) {
771                         IWL_ERR(priv, "channel %d not IBSS channel\n",
772                                   le16_to_cpu(priv->staging_rxon.channel));
773                         return -EINVAL;
774                 }
775         }
776
777         iwl_connection_init_rx_config(priv, mode);
778
779         iwl3945_clear_stations_table(priv);
780
781         /* don't commit rxon if rf-kill is on*/
782         if (!iwl_is_ready_rf(priv))
783                 return -EAGAIN;
784
785         cancel_delayed_work(&priv->scan_check);
786         if (iwl_scan_cancel_timeout(priv, 100)) {
787                 IWL_WARN(priv, "Aborted scan still in progress after 100ms\n");
788                 IWL_DEBUG_MAC80211(priv, "leaving - scan abort failed.\n");
789                 return -EAGAIN;
790         }
791
792         iwl3945_commit_rxon(priv);
793
794         return 0;
795 }
796
797 static void iwl3945_build_tx_cmd_hwcrypto(struct iwl_priv *priv,
798                                       struct ieee80211_tx_info *info,
799                                       struct iwl_cmd *cmd,
800                                       struct sk_buff *skb_frag,
801                                       int last_frag)
802 {
803         struct iwl3945_tx_cmd *tx = (struct iwl3945_tx_cmd *)cmd->cmd.payload;
804         struct iwl3945_hw_key *keyinfo =
805             &priv->stations_39[info->control.hw_key->hw_key_idx].keyinfo;
806
807         switch (keyinfo->alg) {
808         case ALG_CCMP:
809                 tx->sec_ctl = TX_CMD_SEC_CCM;
810                 memcpy(tx->key, keyinfo->key, keyinfo->keylen);
811                 IWL_DEBUG_TX(priv, "tx_cmd with AES hwcrypto\n");
812                 break;
813
814         case ALG_TKIP:
815 #if 0
816                 tx->sec_ctl = TX_CMD_SEC_TKIP;
817
818                 if (last_frag)
819                         memcpy(tx->tkip_mic.byte, skb_frag->tail - 8,
820                                8);
821                 else
822                         memset(tx->tkip_mic.byte, 0, 8);
823 #endif
824                 break;
825
826         case ALG_WEP:
827                 tx->sec_ctl = TX_CMD_SEC_WEP |
828                     (info->control.hw_key->hw_key_idx & TX_CMD_SEC_MSK) << TX_CMD_SEC_SHIFT;
829
830                 if (keyinfo->keylen == 13)
831                         tx->sec_ctl |= TX_CMD_SEC_KEY128;
832
833                 memcpy(&tx->key[3], keyinfo->key, keyinfo->keylen);
834
835                 IWL_DEBUG_TX(priv, "Configuring packet for WEP encryption "
836                              "with key %d\n", info->control.hw_key->hw_key_idx);
837                 break;
838
839         default:
840                 IWL_ERR(priv, "Unknown encode alg %d\n", keyinfo->alg);
841                 break;
842         }
843 }
844
845 /*
846  * handle build REPLY_TX command notification.
847  */
848 static void iwl3945_build_tx_cmd_basic(struct iwl_priv *priv,
849                                   struct iwl_cmd *cmd,
850                                   struct ieee80211_tx_info *info,
851                                   struct ieee80211_hdr *hdr, u8 std_id)
852 {
853         struct iwl3945_tx_cmd *tx = (struct iwl3945_tx_cmd *)cmd->cmd.payload;
854         __le32 tx_flags = tx->tx_flags;
855         __le16 fc = hdr->frame_control;
856         u8 rc_flags = info->control.rates[0].flags;
857
858         tx->stop_time.life_time = TX_CMD_LIFE_TIME_INFINITE;
859         if (!(info->flags & IEEE80211_TX_CTL_NO_ACK)) {
860                 tx_flags |= TX_CMD_FLG_ACK_MSK;
861                 if (ieee80211_is_mgmt(fc))
862                         tx_flags |= TX_CMD_FLG_SEQ_CTL_MSK;
863                 if (ieee80211_is_probe_resp(fc) &&
864                     !(le16_to_cpu(hdr->seq_ctrl) & 0xf))
865                         tx_flags |= TX_CMD_FLG_TSF_MSK;
866         } else {
867                 tx_flags &= (~TX_CMD_FLG_ACK_MSK);
868                 tx_flags |= TX_CMD_FLG_SEQ_CTL_MSK;
869         }
870
871         tx->sta_id = std_id;
872         if (ieee80211_has_morefrags(fc))
873                 tx_flags |= TX_CMD_FLG_MORE_FRAG_MSK;
874
875         if (ieee80211_is_data_qos(fc)) {
876                 u8 *qc = ieee80211_get_qos_ctl(hdr);
877                 tx->tid_tspec = qc[0] & 0xf;
878                 tx_flags &= ~TX_CMD_FLG_SEQ_CTL_MSK;
879         } else {
880                 tx_flags |= TX_CMD_FLG_SEQ_CTL_MSK;
881         }
882
883         if (rc_flags & IEEE80211_TX_RC_USE_RTS_CTS) {
884                 tx_flags |= TX_CMD_FLG_RTS_MSK;
885                 tx_flags &= ~TX_CMD_FLG_CTS_MSK;
886         } else if (rc_flags & IEEE80211_TX_RC_USE_CTS_PROTECT) {
887                 tx_flags &= ~TX_CMD_FLG_RTS_MSK;
888                 tx_flags |= TX_CMD_FLG_CTS_MSK;
889         }
890
891         if ((tx_flags & TX_CMD_FLG_RTS_MSK) || (tx_flags & TX_CMD_FLG_CTS_MSK))
892                 tx_flags |= TX_CMD_FLG_FULL_TXOP_PROT_MSK;
893
894         tx_flags &= ~(TX_CMD_FLG_ANT_SEL_MSK);
895         if (ieee80211_is_mgmt(fc)) {
896                 if (ieee80211_is_assoc_req(fc) || ieee80211_is_reassoc_req(fc))
897                         tx->timeout.pm_frame_timeout = cpu_to_le16(3);
898                 else
899                         tx->timeout.pm_frame_timeout = cpu_to_le16(2);
900         } else {
901                 tx->timeout.pm_frame_timeout = 0;
902 #ifdef CONFIG_IWL3945_LEDS
903                 priv->rxtxpackets += le16_to_cpu(cmd->cmd.tx.len);
904 #endif
905         }
906
907         tx->driver_txop = 0;
908         tx->tx_flags = tx_flags;
909         tx->next_frame_len = 0;
910 }
911
912 /**
913  * iwl3945_get_sta_id - Find station's index within station table
914  */
915 static int iwl3945_get_sta_id(struct iwl_priv *priv, struct ieee80211_hdr *hdr)
916 {
917         int sta_id;
918         u16 fc = le16_to_cpu(hdr->frame_control);
919
920         /* If this frame is broadcast or management, use broadcast station id */
921         if (((fc & IEEE80211_FCTL_FTYPE) != IEEE80211_FTYPE_DATA) ||
922             is_multicast_ether_addr(hdr->addr1))
923                 return priv->hw_params.bcast_sta_id;
924
925         switch (priv->iw_mode) {
926
927         /* If we are a client station in a BSS network, use the special
928          * AP station entry (that's the only station we communicate with) */
929         case NL80211_IFTYPE_STATION:
930                 return IWL_AP_ID;
931
932         /* If we are an AP, then find the station, or use BCAST */
933         case NL80211_IFTYPE_AP:
934                 sta_id = iwl3945_hw_find_station(priv, hdr->addr1);
935                 if (sta_id != IWL_INVALID_STATION)
936                         return sta_id;
937                 return priv->hw_params.bcast_sta_id;
938
939         /* If this frame is going out to an IBSS network, find the station,
940          * or create a new station table entry */
941         case NL80211_IFTYPE_ADHOC: {
942                 /* Create new station table entry */
943                 sta_id = iwl3945_hw_find_station(priv, hdr->addr1);
944                 if (sta_id != IWL_INVALID_STATION)
945                         return sta_id;
946
947                 sta_id = iwl3945_add_station(priv, hdr->addr1, 0, CMD_ASYNC);
948
949                 if (sta_id != IWL_INVALID_STATION)
950                         return sta_id;
951
952                 IWL_DEBUG_DROP(priv, "Station %pM not in station map. "
953                                "Defaulting to broadcast...\n",
954                                hdr->addr1);
955                 iwl_print_hex_dump(priv, IWL_DL_DROP, (u8 *) hdr, sizeof(*hdr));
956                 return priv->hw_params.bcast_sta_id;
957         }
958         /* If we are in monitor mode, use BCAST. This is required for
959          * packet injection. */
960         case NL80211_IFTYPE_MONITOR:
961                 return priv->hw_params.bcast_sta_id;
962
963         default:
964                 IWL_WARN(priv, "Unknown mode of operation: %d\n",
965                         priv->iw_mode);
966                 return priv->hw_params.bcast_sta_id;
967         }
968 }
969
970 /*
971  * start REPLY_TX command process
972  */
973 static int iwl3945_tx_skb(struct iwl_priv *priv, struct sk_buff *skb)
974 {
975         struct ieee80211_hdr *hdr = (struct ieee80211_hdr *)skb->data;
976         struct ieee80211_tx_info *info = IEEE80211_SKB_CB(skb);
977         struct iwl3945_tx_cmd *tx;
978         struct iwl_tx_queue *txq = NULL;
979         struct iwl_queue *q = NULL;
980         struct iwl_cmd *out_cmd = NULL;
981         dma_addr_t phys_addr;
982         dma_addr_t txcmd_phys;
983         int txq_id = skb_get_queue_mapping(skb);
984         u16 len, idx, len_org, hdr_len;
985         u8 id;
986         u8 unicast;
987         u8 sta_id;
988         u8 tid = 0;
989         u16 seq_number = 0;
990         __le16 fc;
991         u8 wait_write_ptr = 0;
992         u8 *qc = NULL;
993         unsigned long flags;
994         int rc;
995
996         spin_lock_irqsave(&priv->lock, flags);
997         if (iwl_is_rfkill(priv)) {
998                 IWL_DEBUG_DROP(priv, "Dropping - RF KILL\n");
999                 goto drop_unlock;
1000         }
1001
1002         if ((ieee80211_get_tx_rate(priv->hw, info)->hw_value & 0xFF) == IWL_INVALID_RATE) {
1003                 IWL_ERR(priv, "ERROR: No TX rate available.\n");
1004                 goto drop_unlock;
1005         }
1006
1007         unicast = !is_multicast_ether_addr(hdr->addr1);
1008         id = 0;
1009
1010         fc = hdr->frame_control;
1011
1012 #ifdef CONFIG_IWLWIFI_DEBUG
1013         if (ieee80211_is_auth(fc))
1014                 IWL_DEBUG_TX(priv, "Sending AUTH frame\n");
1015         else if (ieee80211_is_assoc_req(fc))
1016                 IWL_DEBUG_TX(priv, "Sending ASSOC frame\n");
1017         else if (ieee80211_is_reassoc_req(fc))
1018                 IWL_DEBUG_TX(priv, "Sending REASSOC frame\n");
1019 #endif
1020
1021         /* drop all data frame if we are not associated */
1022         if (ieee80211_is_data(fc) &&
1023             (priv->iw_mode != NL80211_IFTYPE_MONITOR) && /* packet injection */
1024             (!iwl_is_associated(priv) ||
1025              ((priv->iw_mode == NL80211_IFTYPE_STATION) && !priv->assoc_id))) {
1026                 IWL_DEBUG_DROP(priv, "Dropping - !iwl_is_associated\n");
1027                 goto drop_unlock;
1028         }
1029
1030         spin_unlock_irqrestore(&priv->lock, flags);
1031
1032         hdr_len = ieee80211_hdrlen(fc);
1033
1034         /* Find (or create) index into station table for destination station */
1035         sta_id = iwl3945_get_sta_id(priv, hdr);
1036         if (sta_id == IWL_INVALID_STATION) {
1037                 IWL_DEBUG_DROP(priv, "Dropping - INVALID STATION: %pM\n",
1038                                hdr->addr1);
1039                 goto drop;
1040         }
1041
1042         IWL_DEBUG_RATE(priv, "station Id %d\n", sta_id);
1043
1044         if (ieee80211_is_data_qos(fc)) {
1045                 qc = ieee80211_get_qos_ctl(hdr);
1046                 tid = qc[0] & IEEE80211_QOS_CTL_TID_MASK;
1047                 seq_number = priv->stations_39[sta_id].tid[tid].seq_number &
1048                                 IEEE80211_SCTL_SEQ;
1049                 hdr->seq_ctrl = cpu_to_le16(seq_number) |
1050                         (hdr->seq_ctrl &
1051                                 cpu_to_le16(IEEE80211_SCTL_FRAG));
1052                 seq_number += 0x10;
1053         }
1054
1055         /* Descriptor for chosen Tx queue */
1056         txq = &priv->txq[txq_id];
1057         q = &txq->q;
1058
1059         spin_lock_irqsave(&priv->lock, flags);
1060
1061         idx = get_cmd_index(q, q->write_ptr, 0);
1062
1063         /* Set up driver data for this TFD */
1064         memset(&(txq->txb[q->write_ptr]), 0, sizeof(struct iwl_tx_info));
1065         txq->txb[q->write_ptr].skb[0] = skb;
1066
1067         /* Init first empty entry in queue's array of Tx/cmd buffers */
1068         out_cmd = txq->cmd[idx];
1069         tx = (struct iwl3945_tx_cmd *)out_cmd->cmd.payload;
1070         memset(&out_cmd->hdr, 0, sizeof(out_cmd->hdr));
1071         memset(tx, 0, sizeof(*tx));
1072
1073         /*
1074          * Set up the Tx-command (not MAC!) header.
1075          * Store the chosen Tx queue and TFD index within the sequence field;
1076          * after Tx, uCode's Tx response will return this value so driver can
1077          * locate the frame within the tx queue and do post-tx processing.
1078          */
1079         out_cmd->hdr.cmd = REPLY_TX;
1080         out_cmd->hdr.sequence = cpu_to_le16((u16)(QUEUE_TO_SEQ(txq_id) |
1081                                 INDEX_TO_SEQ(q->write_ptr)));
1082
1083         /* Copy MAC header from skb into command buffer */
1084         memcpy(tx->hdr, hdr, hdr_len);
1085
1086         /*
1087          * Use the first empty entry in this queue's command buffer array
1088          * to contain the Tx command and MAC header concatenated together
1089          * (payload data will be in another buffer).
1090          * Size of this varies, due to varying MAC header length.
1091          * If end is not dword aligned, we'll have 2 extra bytes at the end
1092          * of the MAC header (device reads on dword boundaries).
1093          * We'll tell device about this padding later.
1094          */
1095         len = sizeof(struct iwl3945_tx_cmd) +
1096                         sizeof(struct iwl_cmd_header) + hdr_len;
1097
1098         len_org = len;
1099         len = (len + 3) & ~3;
1100
1101         if (len_org != len)
1102                 len_org = 1;
1103         else
1104                 len_org = 0;
1105
1106         /* Physical address of this Tx command's header (not MAC header!),
1107          * within command buffer array. */
1108         txcmd_phys = pci_map_single(priv->pci_dev,
1109                                     out_cmd, sizeof(struct iwl_cmd),
1110                                     PCI_DMA_TODEVICE);
1111         pci_unmap_addr_set(&out_cmd->meta, mapping, txcmd_phys);
1112         pci_unmap_len_set(&out_cmd->meta, len, sizeof(struct iwl_cmd));
1113         /* Add buffer containing Tx command and MAC(!) header to TFD's
1114          * first entry */
1115         txcmd_phys += offsetof(struct iwl_cmd, hdr);
1116
1117         /* Add buffer containing Tx command and MAC(!) header to TFD's
1118          * first entry */
1119         priv->cfg->ops->lib->txq_attach_buf_to_tfd(priv, txq,
1120                                                    txcmd_phys, len, 1, 0);
1121
1122         if (info->control.hw_key)
1123                 iwl3945_build_tx_cmd_hwcrypto(priv, info, out_cmd, skb, 0);
1124
1125         /* Set up TFD's 2nd entry to point directly to remainder of skb,
1126          * if any (802.11 null frames have no payload). */
1127         len = skb->len - hdr_len;
1128         if (len) {
1129                 phys_addr = pci_map_single(priv->pci_dev, skb->data + hdr_len,
1130                                            len, PCI_DMA_TODEVICE);
1131                 priv->cfg->ops->lib->txq_attach_buf_to_tfd(priv, txq,
1132                                                            phys_addr, len,
1133                                                            0, U32_PAD(len));
1134         }
1135
1136         /* Total # bytes to be transmitted */
1137         len = (u16)skb->len;
1138         tx->len = cpu_to_le16(len);
1139
1140         /* TODO need this for burst mode later on */
1141         iwl3945_build_tx_cmd_basic(priv, out_cmd, info, hdr, sta_id);
1142
1143         /* set is_hcca to 0; it probably will never be implemented */
1144         iwl3945_hw_build_tx_cmd_rate(priv, out_cmd, info, hdr, sta_id, 0);
1145
1146         tx->tx_flags &= ~TX_CMD_FLG_ANT_A_MSK;
1147         tx->tx_flags &= ~TX_CMD_FLG_ANT_B_MSK;
1148
1149         if (!ieee80211_has_morefrags(hdr->frame_control)) {
1150                 txq->need_update = 1;
1151                 if (qc)
1152                         priv->stations_39[sta_id].tid[tid].seq_number = seq_number;
1153         } else {
1154                 wait_write_ptr = 1;
1155                 txq->need_update = 0;
1156         }
1157
1158         iwl_print_hex_dump(priv, IWL_DL_TX, tx, sizeof(*tx));
1159
1160         iwl_print_hex_dump(priv, IWL_DL_TX, (u8 *)tx->hdr,
1161                            ieee80211_hdrlen(fc));
1162
1163         /* Tell device the write index *just past* this latest filled TFD */
1164         q->write_ptr = iwl_queue_inc_wrap(q->write_ptr, q->n_bd);
1165         rc = iwl_txq_update_write_ptr(priv, txq);
1166         spin_unlock_irqrestore(&priv->lock, flags);
1167
1168         if (rc)
1169                 return rc;
1170
1171         if ((iwl_queue_space(q) < q->high_mark)
1172             && priv->mac80211_registered) {
1173                 if (wait_write_ptr) {
1174                         spin_lock_irqsave(&priv->lock, flags);
1175                         txq->need_update = 1;
1176                         iwl_txq_update_write_ptr(priv, txq);
1177                         spin_unlock_irqrestore(&priv->lock, flags);
1178                 }
1179
1180                 ieee80211_stop_queue(priv->hw, skb_get_queue_mapping(skb));
1181         }
1182
1183         return 0;
1184
1185 drop_unlock:
1186         spin_unlock_irqrestore(&priv->lock, flags);
1187 drop:
1188         return -1;
1189 }
1190
1191 static void iwl3945_radio_kill_sw(struct iwl_priv *priv, int disable_radio)
1192 {
1193         unsigned long flags;
1194
1195         if (!!disable_radio == test_bit(STATUS_RF_KILL_SW, &priv->status))
1196                 return;
1197
1198         IWL_DEBUG_RF_KILL(priv, "Manual SW RF KILL set to: RADIO %s\n",
1199                           disable_radio ? "OFF" : "ON");
1200
1201         if (disable_radio) {
1202                 iwl_scan_cancel(priv);
1203                 /* FIXME: This is a workaround for AP */
1204                 if (priv->iw_mode != NL80211_IFTYPE_AP) {
1205                         spin_lock_irqsave(&priv->lock, flags);
1206                         iwl_write32(priv, CSR_UCODE_DRV_GP1_SET,
1207                                     CSR_UCODE_SW_BIT_RFKILL);
1208                         spin_unlock_irqrestore(&priv->lock, flags);
1209                         iwl_send_card_state(priv, CARD_STATE_CMD_DISABLE, 0);
1210                         set_bit(STATUS_RF_KILL_SW, &priv->status);
1211                 }
1212                 return;
1213         }
1214
1215         spin_lock_irqsave(&priv->lock, flags);
1216         iwl_write32(priv, CSR_UCODE_DRV_GP1_CLR, CSR_UCODE_SW_BIT_RFKILL);
1217
1218         clear_bit(STATUS_RF_KILL_SW, &priv->status);
1219         spin_unlock_irqrestore(&priv->lock, flags);
1220
1221         /* wake up ucode */
1222         msleep(10);
1223
1224         spin_lock_irqsave(&priv->lock, flags);
1225         iwl_read32(priv, CSR_UCODE_DRV_GP1);
1226         if (!iwl_grab_nic_access(priv))
1227                 iwl_release_nic_access(priv);
1228         spin_unlock_irqrestore(&priv->lock, flags);
1229
1230         if (test_bit(STATUS_RF_KILL_HW, &priv->status)) {
1231                 IWL_DEBUG_RF_KILL(priv, "Can not turn radio back on - "
1232                                   "disabled by HW switch\n");
1233                 return;
1234         }
1235
1236         if (priv->is_open)
1237                 queue_work(priv->workqueue, &priv->restart);
1238         return;
1239 }
1240
1241 #ifdef CONFIG_IWL3945_SPECTRUM_MEASUREMENT
1242
1243 #include "iwl-spectrum.h"
1244
1245 #define BEACON_TIME_MASK_LOW    0x00FFFFFF
1246 #define BEACON_TIME_MASK_HIGH   0xFF000000
1247 #define TIME_UNIT               1024
1248
1249 /*
1250  * extended beacon time format
1251  * time in usec will be changed into a 32-bit value in 8:24 format
1252  * the high 1 byte is the beacon counts
1253  * the lower 3 bytes is the time in usec within one beacon interval
1254  */
1255
1256 static u32 iwl3945_usecs_to_beacons(u32 usec, u32 beacon_interval)
1257 {
1258         u32 quot;
1259         u32 rem;
1260         u32 interval = beacon_interval * 1024;
1261
1262         if (!interval || !usec)
1263                 return 0;
1264
1265         quot = (usec / interval) & (BEACON_TIME_MASK_HIGH >> 24);
1266         rem = (usec % interval) & BEACON_TIME_MASK_LOW;
1267
1268         return (quot << 24) + rem;
1269 }
1270
1271 /* base is usually what we get from ucode with each received frame,
1272  * the same as HW timer counter counting down
1273  */
1274
1275 static __le32 iwl3945_add_beacon_time(u32 base, u32 addon, u32 beacon_interval)
1276 {
1277         u32 base_low = base & BEACON_TIME_MASK_LOW;
1278         u32 addon_low = addon & BEACON_TIME_MASK_LOW;
1279         u32 interval = beacon_interval * TIME_UNIT;
1280         u32 res = (base & BEACON_TIME_MASK_HIGH) +
1281             (addon & BEACON_TIME_MASK_HIGH);
1282
1283         if (base_low > addon_low)
1284                 res += base_low - addon_low;
1285         else if (base_low < addon_low) {
1286                 res += interval + base_low - addon_low;
1287                 res += (1 << 24);
1288         } else
1289                 res += (1 << 24);
1290
1291         return cpu_to_le32(res);
1292 }
1293
1294 static int iwl3945_get_measurement(struct iwl_priv *priv,
1295                                struct ieee80211_measurement_params *params,
1296                                u8 type)
1297 {
1298         struct iwl_spectrum_cmd spectrum;
1299         struct iwl_rx_packet *res;
1300         struct iwl_host_cmd cmd = {
1301                 .id = REPLY_SPECTRUM_MEASUREMENT_CMD,
1302                 .data = (void *)&spectrum,
1303                 .meta.flags = CMD_WANT_SKB,
1304         };
1305         u32 add_time = le64_to_cpu(params->start_time);
1306         int rc;
1307         int spectrum_resp_status;
1308         int duration = le16_to_cpu(params->duration);
1309
1310         if (iwl_is_associated(priv))
1311                 add_time =
1312                     iwl3945_usecs_to_beacons(
1313                         le64_to_cpu(params->start_time) - priv->last_tsf,
1314                         le16_to_cpu(priv->rxon_timing.beacon_interval));
1315
1316         memset(&spectrum, 0, sizeof(spectrum));
1317
1318         spectrum.channel_count = cpu_to_le16(1);
1319         spectrum.flags =
1320             RXON_FLG_TSF2HOST_MSK | RXON_FLG_ANT_A_MSK | RXON_FLG_DIS_DIV_MSK;
1321         spectrum.filter_flags = MEASUREMENT_FILTER_FLAG;
1322         cmd.len = sizeof(spectrum);
1323         spectrum.len = cpu_to_le16(cmd.len - sizeof(spectrum.len));
1324
1325         if (iwl_is_associated(priv))
1326                 spectrum.start_time =
1327                     iwl3945_add_beacon_time(priv->last_beacon_time,
1328                                 add_time,
1329                                 le16_to_cpu(priv->rxon_timing.beacon_interval));
1330         else
1331                 spectrum.start_time = 0;
1332
1333         spectrum.channels[0].duration = cpu_to_le32(duration * TIME_UNIT);
1334         spectrum.channels[0].channel = params->channel;
1335         spectrum.channels[0].type = type;
1336         if (priv->active_rxon.flags & RXON_FLG_BAND_24G_MSK)
1337                 spectrum.flags |= RXON_FLG_BAND_24G_MSK |
1338                     RXON_FLG_AUTO_DETECT_MSK | RXON_FLG_TGG_PROTECT_MSK;
1339
1340         rc = iwl_send_cmd_sync(priv, &cmd);
1341         if (rc)
1342                 return rc;
1343
1344         res = (struct iwl_rx_packet *)cmd.meta.u.skb->data;
1345         if (res->hdr.flags & IWL_CMD_FAILED_MSK) {
1346                 IWL_ERR(priv, "Bad return from REPLY_RX_ON_ASSOC command\n");
1347                 rc = -EIO;
1348         }
1349
1350         spectrum_resp_status = le16_to_cpu(res->u.spectrum.status);
1351         switch (spectrum_resp_status) {
1352         case 0:         /* Command will be handled */
1353                 if (res->u.spectrum.id != 0xff) {
1354                         IWL_DEBUG_INFO(priv, "Replaced existing measurement: %d\n",
1355                                                 res->u.spectrum.id);
1356                         priv->measurement_status &= ~MEASUREMENT_READY;
1357                 }
1358                 priv->measurement_status |= MEASUREMENT_ACTIVE;
1359                 rc = 0;
1360                 break;
1361
1362         case 1:         /* Command will not be handled */
1363                 rc = -EAGAIN;
1364                 break;
1365         }
1366
1367         dev_kfree_skb_any(cmd.meta.u.skb);
1368
1369         return rc;
1370 }
1371 #endif
1372
1373 static void iwl3945_rx_reply_alive(struct iwl_priv *priv,
1374                                struct iwl_rx_mem_buffer *rxb)
1375 {
1376         struct iwl_rx_packet *pkt = (void *)rxb->skb->data;
1377         struct iwl_alive_resp *palive;
1378         struct delayed_work *pwork;
1379
1380         palive = &pkt->u.alive_frame;
1381
1382         IWL_DEBUG_INFO(priv, "Alive ucode status 0x%08X revision "
1383                        "0x%01X 0x%01X\n",
1384                        palive->is_valid, palive->ver_type,
1385                        palive->ver_subtype);
1386
1387         if (palive->ver_subtype == INITIALIZE_SUBTYPE) {
1388                 IWL_DEBUG_INFO(priv, "Initialization Alive received.\n");
1389                 memcpy(&priv->card_alive_init, &pkt->u.alive_frame,
1390                        sizeof(struct iwl_alive_resp));
1391                 pwork = &priv->init_alive_start;
1392         } else {
1393                 IWL_DEBUG_INFO(priv, "Runtime Alive received.\n");
1394                 memcpy(&priv->card_alive, &pkt->u.alive_frame,
1395                        sizeof(struct iwl_alive_resp));
1396                 pwork = &priv->alive_start;
1397                 iwl3945_disable_events(priv);
1398         }
1399
1400         /* We delay the ALIVE response by 5ms to
1401          * give the HW RF Kill time to activate... */
1402         if (palive->is_valid == UCODE_VALID_OK)
1403                 queue_delayed_work(priv->workqueue, pwork,
1404                                    msecs_to_jiffies(5));
1405         else
1406                 IWL_WARN(priv, "uCode did not respond OK.\n");
1407 }
1408
1409 static void iwl3945_rx_reply_add_sta(struct iwl_priv *priv,
1410                                  struct iwl_rx_mem_buffer *rxb)
1411 {
1412 #ifdef CONFIG_IWLWIFI_DEBUG
1413         struct iwl_rx_packet *pkt = (void *)rxb->skb->data;
1414 #endif
1415
1416         IWL_DEBUG_RX(priv, "Received REPLY_ADD_STA: 0x%02X\n", pkt->u.status);
1417         return;
1418 }
1419
1420 static void iwl3945_rx_reply_error(struct iwl_priv *priv,
1421                                struct iwl_rx_mem_buffer *rxb)
1422 {
1423         struct iwl_rx_packet *pkt = (void *)rxb->skb->data;
1424
1425         IWL_ERR(priv, "Error Reply type 0x%08X cmd %s (0x%02X) "
1426                 "seq 0x%04X ser 0x%08X\n",
1427                 le32_to_cpu(pkt->u.err_resp.error_type),
1428                 get_cmd_string(pkt->u.err_resp.cmd_id),
1429                 pkt->u.err_resp.cmd_id,
1430                 le16_to_cpu(pkt->u.err_resp.bad_cmd_seq_num),
1431                 le32_to_cpu(pkt->u.err_resp.error_info));
1432 }
1433
1434 static void iwl3945_rx_spectrum_measure_notif(struct iwl_priv *priv,
1435                                           struct iwl_rx_mem_buffer *rxb)
1436 {
1437 #ifdef CONFIG_IWL3945_SPECTRUM_MEASUREMENT
1438         struct iwl_rx_packet *pkt = (void *)rxb->skb->data;
1439         struct iwl_spectrum_notification *report = &(pkt->u.spectrum_notif);
1440
1441         if (!report->state) {
1442                 IWL_DEBUG(priv, IWL_DL_11H | IWL_DL_INFO,
1443                           "Spectrum Measure Notification: Start\n");
1444                 return;
1445         }
1446
1447         memcpy(&priv->measure_report, report, sizeof(*report));
1448         priv->measurement_status |= MEASUREMENT_READY;
1449 #endif
1450 }
1451
1452 static void iwl3945_rx_pm_sleep_notif(struct iwl_priv *priv,
1453                                   struct iwl_rx_mem_buffer *rxb)
1454 {
1455 #ifdef CONFIG_IWLWIFI_DEBUG
1456         struct iwl_rx_packet *pkt = (void *)rxb->skb->data;
1457         struct iwl_sleep_notification *sleep = &(pkt->u.sleep_notif);
1458         IWL_DEBUG_RX(priv, "sleep mode: %d, src: %d\n",
1459                      sleep->pm_sleep_mode, sleep->pm_wakeup_src);
1460 #endif
1461 }
1462
1463 static void iwl3945_rx_pm_debug_statistics_notif(struct iwl_priv *priv,
1464                                              struct iwl_rx_mem_buffer *rxb)
1465 {
1466         struct iwl_rx_packet *pkt = (void *)rxb->skb->data;
1467         IWL_DEBUG_RADIO(priv, "Dumping %d bytes of unhandled "
1468                         "notification for %s:\n",
1469                         le32_to_cpu(pkt->len), get_cmd_string(pkt->hdr.cmd));
1470         iwl_print_hex_dump(priv, IWL_DL_RADIO, pkt->u.raw,
1471                            le32_to_cpu(pkt->len));
1472 }
1473
1474 static void iwl3945_bg_beacon_update(struct work_struct *work)
1475 {
1476         struct iwl_priv *priv =
1477                 container_of(work, struct iwl_priv, beacon_update);
1478         struct sk_buff *beacon;
1479
1480         /* Pull updated AP beacon from mac80211. will fail if not in AP mode */
1481         beacon = ieee80211_beacon_get(priv->hw, priv->vif);
1482
1483         if (!beacon) {
1484                 IWL_ERR(priv, "update beacon failed\n");
1485                 return;
1486         }
1487
1488         mutex_lock(&priv->mutex);
1489         /* new beacon skb is allocated every time; dispose previous.*/
1490         if (priv->ibss_beacon)
1491                 dev_kfree_skb(priv->ibss_beacon);
1492
1493         priv->ibss_beacon = beacon;
1494         mutex_unlock(&priv->mutex);
1495
1496         iwl3945_send_beacon_cmd(priv);
1497 }
1498
1499 static void iwl3945_rx_beacon_notif(struct iwl_priv *priv,
1500                                 struct iwl_rx_mem_buffer *rxb)
1501 {
1502 #ifdef CONFIG_IWLWIFI_DEBUG
1503         struct iwl_rx_packet *pkt = (void *)rxb->skb->data;
1504         struct iwl3945_beacon_notif *beacon = &(pkt->u.beacon_status);
1505         u8 rate = beacon->beacon_notify_hdr.rate;
1506
1507         IWL_DEBUG_RX(priv, "beacon status %x retries %d iss %d "
1508                 "tsf %d %d rate %d\n",
1509                 le32_to_cpu(beacon->beacon_notify_hdr.status) & TX_STATUS_MSK,
1510                 beacon->beacon_notify_hdr.failure_frame,
1511                 le32_to_cpu(beacon->ibss_mgr_status),
1512                 le32_to_cpu(beacon->high_tsf),
1513                 le32_to_cpu(beacon->low_tsf), rate);
1514 #endif
1515
1516         if ((priv->iw_mode == NL80211_IFTYPE_AP) &&
1517             (!test_bit(STATUS_EXIT_PENDING, &priv->status)))
1518                 queue_work(priv->workqueue, &priv->beacon_update);
1519 }
1520
1521 /* Service response to REPLY_SCAN_CMD (0x80) */
1522 static void iwl3945_rx_reply_scan(struct iwl_priv *priv,
1523                               struct iwl_rx_mem_buffer *rxb)
1524 {
1525 #ifdef CONFIG_IWLWIFI_DEBUG
1526         struct iwl_rx_packet *pkt = (void *)rxb->skb->data;
1527         struct iwl_scanreq_notification *notif =
1528             (struct iwl_scanreq_notification *)pkt->u.raw;
1529
1530         IWL_DEBUG_RX(priv, "Scan request status = 0x%x\n", notif->status);
1531 #endif
1532 }
1533
1534 /* Service SCAN_START_NOTIFICATION (0x82) */
1535 static void iwl3945_rx_scan_start_notif(struct iwl_priv *priv,
1536                                     struct iwl_rx_mem_buffer *rxb)
1537 {
1538         struct iwl_rx_packet *pkt = (void *)rxb->skb->data;
1539         struct iwl_scanstart_notification *notif =
1540             (struct iwl_scanstart_notification *)pkt->u.raw;
1541         priv->scan_start_tsf = le32_to_cpu(notif->tsf_low);
1542         IWL_DEBUG_SCAN(priv, "Scan start: "
1543                        "%d [802.11%s] "
1544                        "(TSF: 0x%08X:%08X) - %d (beacon timer %u)\n",
1545                        notif->channel,
1546                        notif->band ? "bg" : "a",
1547                        notif->tsf_high,
1548                        notif->tsf_low, notif->status, notif->beacon_timer);
1549 }
1550
1551 /* Service SCAN_RESULTS_NOTIFICATION (0x83) */
1552 static void iwl3945_rx_scan_results_notif(struct iwl_priv *priv,
1553                                       struct iwl_rx_mem_buffer *rxb)
1554 {
1555 #ifdef CONFIG_IWLWIFI_DEBUG
1556         struct iwl_rx_packet *pkt = (void *)rxb->skb->data;
1557         struct iwl_scanresults_notification *notif =
1558             (struct iwl_scanresults_notification *)pkt->u.raw;
1559 #endif
1560
1561         IWL_DEBUG_SCAN(priv, "Scan ch.res: "
1562                        "%d [802.11%s] "
1563                        "(TSF: 0x%08X:%08X) - %d "
1564                        "elapsed=%lu usec (%dms since last)\n",
1565                        notif->channel,
1566                        notif->band ? "bg" : "a",
1567                        le32_to_cpu(notif->tsf_high),
1568                        le32_to_cpu(notif->tsf_low),
1569                        le32_to_cpu(notif->statistics[0]),
1570                        le32_to_cpu(notif->tsf_low) - priv->scan_start_tsf,
1571                        jiffies_to_msecs(elapsed_jiffies
1572                                         (priv->last_scan_jiffies, jiffies)));
1573
1574         priv->last_scan_jiffies = jiffies;
1575         priv->next_scan_jiffies = 0;
1576 }
1577
1578 /* Service SCAN_COMPLETE_NOTIFICATION (0x84) */
1579 static void iwl3945_rx_scan_complete_notif(struct iwl_priv *priv,
1580                                        struct iwl_rx_mem_buffer *rxb)
1581 {
1582 #ifdef CONFIG_IWLWIFI_DEBUG
1583         struct iwl_rx_packet *pkt = (void *)rxb->skb->data;
1584         struct iwl_scancomplete_notification *scan_notif = (void *)pkt->u.raw;
1585 #endif
1586
1587         IWL_DEBUG_SCAN(priv, "Scan complete: %d channels (TSF 0x%08X:%08X) - %d\n",
1588                        scan_notif->scanned_channels,
1589                        scan_notif->tsf_low,
1590                        scan_notif->tsf_high, scan_notif->status);
1591
1592         /* The HW is no longer scanning */
1593         clear_bit(STATUS_SCAN_HW, &priv->status);
1594
1595         /* The scan completion notification came in, so kill that timer... */
1596         cancel_delayed_work(&priv->scan_check);
1597
1598         IWL_DEBUG_INFO(priv, "Scan pass on %sGHz took %dms\n",
1599                        (priv->scan_bands & BIT(IEEE80211_BAND_2GHZ)) ?
1600                                                         "2.4" : "5.2",
1601                        jiffies_to_msecs(elapsed_jiffies
1602                                         (priv->scan_pass_start, jiffies)));
1603
1604         /* Remove this scanned band from the list of pending
1605          * bands to scan, band G precedes A in order of scanning
1606          * as seen in iwl3945_bg_request_scan */
1607         if (priv->scan_bands & BIT(IEEE80211_BAND_2GHZ))
1608                 priv->scan_bands &= ~BIT(IEEE80211_BAND_2GHZ);
1609         else if (priv->scan_bands &  BIT(IEEE80211_BAND_5GHZ))
1610                 priv->scan_bands &= ~BIT(IEEE80211_BAND_5GHZ);
1611
1612         /* If a request to abort was given, or the scan did not succeed
1613          * then we reset the scan state machine and terminate,
1614          * re-queuing another scan if one has been requested */
1615         if (test_bit(STATUS_SCAN_ABORTING, &priv->status)) {
1616                 IWL_DEBUG_INFO(priv, "Aborted scan completed.\n");
1617                 clear_bit(STATUS_SCAN_ABORTING, &priv->status);
1618         } else {
1619                 /* If there are more bands on this scan pass reschedule */
1620                 if (priv->scan_bands > 0)
1621                         goto reschedule;
1622         }
1623
1624         priv->last_scan_jiffies = jiffies;
1625         priv->next_scan_jiffies = 0;
1626         IWL_DEBUG_INFO(priv, "Setting scan to off\n");
1627
1628         clear_bit(STATUS_SCANNING, &priv->status);
1629
1630         IWL_DEBUG_INFO(priv, "Scan took %dms\n",
1631                 jiffies_to_msecs(elapsed_jiffies(priv->scan_start, jiffies)));
1632
1633         queue_work(priv->workqueue, &priv->scan_completed);
1634
1635         return;
1636
1637 reschedule:
1638         priv->scan_pass_start = jiffies;
1639         queue_work(priv->workqueue, &priv->request_scan);
1640 }
1641
1642 /* Handle notification from uCode that card's power state is changing
1643  * due to software, hardware, or critical temperature RFKILL */
1644 static void iwl3945_rx_card_state_notif(struct iwl_priv *priv,
1645                                     struct iwl_rx_mem_buffer *rxb)
1646 {
1647         struct iwl_rx_packet *pkt = (void *)rxb->skb->data;
1648         u32 flags = le32_to_cpu(pkt->u.card_state_notif.flags);
1649         unsigned long status = priv->status;
1650
1651         IWL_DEBUG_RF_KILL(priv, "Card state received: HW:%s SW:%s\n",
1652                           (flags & HW_CARD_DISABLED) ? "Kill" : "On",
1653                           (flags & SW_CARD_DISABLED) ? "Kill" : "On");
1654
1655         iwl_write32(priv, CSR_UCODE_DRV_GP1_SET,
1656                     CSR_UCODE_DRV_GP1_BIT_CMD_BLOCKED);
1657
1658         if (flags & HW_CARD_DISABLED)
1659                 set_bit(STATUS_RF_KILL_HW, &priv->status);
1660         else
1661                 clear_bit(STATUS_RF_KILL_HW, &priv->status);
1662
1663
1664         if (flags & SW_CARD_DISABLED)
1665                 set_bit(STATUS_RF_KILL_SW, &priv->status);
1666         else
1667                 clear_bit(STATUS_RF_KILL_SW, &priv->status);
1668
1669         iwl_scan_cancel(priv);
1670
1671         if ((test_bit(STATUS_RF_KILL_HW, &status) !=
1672              test_bit(STATUS_RF_KILL_HW, &priv->status)) ||
1673             (test_bit(STATUS_RF_KILL_SW, &status) !=
1674              test_bit(STATUS_RF_KILL_SW, &priv->status)))
1675                 queue_work(priv->workqueue, &priv->rf_kill);
1676         else
1677                 wake_up_interruptible(&priv->wait_command_queue);
1678 }
1679
1680 /**
1681  * iwl3945_setup_rx_handlers - Initialize Rx handler callbacks
1682  *
1683  * Setup the RX handlers for each of the reply types sent from the uCode
1684  * to the host.
1685  *
1686  * This function chains into the hardware specific files for them to setup
1687  * any hardware specific handlers as well.
1688  */
1689 static void iwl3945_setup_rx_handlers(struct iwl_priv *priv)
1690 {
1691         priv->rx_handlers[REPLY_ALIVE] = iwl3945_rx_reply_alive;
1692         priv->rx_handlers[REPLY_ADD_STA] = iwl3945_rx_reply_add_sta;
1693         priv->rx_handlers[REPLY_ERROR] = iwl3945_rx_reply_error;
1694         priv->rx_handlers[CHANNEL_SWITCH_NOTIFICATION] = iwl_rx_csa;
1695         priv->rx_handlers[SPECTRUM_MEASURE_NOTIFICATION] =
1696             iwl3945_rx_spectrum_measure_notif;
1697         priv->rx_handlers[PM_SLEEP_NOTIFICATION] = iwl3945_rx_pm_sleep_notif;
1698         priv->rx_handlers[PM_DEBUG_STATISTIC_NOTIFIC] =
1699             iwl3945_rx_pm_debug_statistics_notif;
1700         priv->rx_handlers[BEACON_NOTIFICATION] = iwl3945_rx_beacon_notif;
1701
1702         /*
1703          * The same handler is used for both the REPLY to a discrete
1704          * statistics request from the host as well as for the periodic
1705          * statistics notifications (after received beacons) from the uCode.
1706          */
1707         priv->rx_handlers[REPLY_STATISTICS_CMD] = iwl3945_hw_rx_statistics;
1708         priv->rx_handlers[STATISTICS_NOTIFICATION] = iwl3945_hw_rx_statistics;
1709
1710         priv->rx_handlers[REPLY_SCAN_CMD] = iwl3945_rx_reply_scan;
1711         priv->rx_handlers[SCAN_START_NOTIFICATION] = iwl3945_rx_scan_start_notif;
1712         priv->rx_handlers[SCAN_RESULTS_NOTIFICATION] =
1713             iwl3945_rx_scan_results_notif;
1714         priv->rx_handlers[SCAN_COMPLETE_NOTIFICATION] =
1715             iwl3945_rx_scan_complete_notif;
1716         priv->rx_handlers[CARD_STATE_NOTIFICATION] = iwl3945_rx_card_state_notif;
1717
1718         /* Set up hardware specific Rx handlers */
1719         iwl3945_hw_rx_handler_setup(priv);
1720 }
1721
1722 /**
1723  * iwl3945_cmd_queue_reclaim - Reclaim CMD queue entries
1724  * When FW advances 'R' index, all entries between old and new 'R' index
1725  * need to be reclaimed.
1726  */
1727 static void iwl3945_cmd_queue_reclaim(struct iwl_priv *priv,
1728                                       int txq_id, int index)
1729 {
1730         struct iwl_tx_queue *txq = &priv->txq[txq_id];
1731         struct iwl_queue *q = &txq->q;
1732         int nfreed = 0;
1733
1734         if ((index >= q->n_bd) || (iwl_queue_used(q, index) == 0)) {
1735                 IWL_ERR(priv, "Read index for DMA queue txq id (%d), index %d, "
1736                           "is out of range [0-%d] %d %d.\n", txq_id,
1737                           index, q->n_bd, q->write_ptr, q->read_ptr);
1738                 return;
1739         }
1740
1741         for (index = iwl_queue_inc_wrap(index, q->n_bd); q->read_ptr != index;
1742                 q->read_ptr = iwl_queue_inc_wrap(q->read_ptr, q->n_bd)) {
1743                 if (nfreed > 1) {
1744                         IWL_ERR(priv, "HCMD skipped: index (%d) %d %d\n", index,
1745                                         q->write_ptr, q->read_ptr);
1746                         queue_work(priv->workqueue, &priv->restart);
1747                         break;
1748                 }
1749                 nfreed++;
1750         }
1751 }
1752
1753
1754 /**
1755  * iwl3945_tx_cmd_complete - Pull unused buffers off the queue and reclaim them
1756  * @rxb: Rx buffer to reclaim
1757  *
1758  * If an Rx buffer has an async callback associated with it the callback
1759  * will be executed.  The attached skb (if present) will only be freed
1760  * if the callback returns 1
1761  */
1762 static void iwl3945_tx_cmd_complete(struct iwl_priv *priv,
1763                                 struct iwl_rx_mem_buffer *rxb)
1764 {
1765         struct iwl_rx_packet *pkt = (struct iwl_rx_packet *)rxb->skb->data;
1766         u16 sequence = le16_to_cpu(pkt->hdr.sequence);
1767         int txq_id = SEQ_TO_QUEUE(sequence);
1768         int index = SEQ_TO_INDEX(sequence);
1769         int huge =  !!(pkt->hdr.sequence & SEQ_HUGE_FRAME);
1770         int cmd_index;
1771         struct iwl_cmd *cmd;
1772
1773         if (WARN(txq_id != IWL_CMD_QUEUE_NUM,
1774                  "wrong command queue %d, sequence 0x%X readp=%d writep=%d\n",
1775                   txq_id, sequence,
1776                   priv->txq[IWL_CMD_QUEUE_NUM].q.read_ptr,
1777                   priv->txq[IWL_CMD_QUEUE_NUM].q.write_ptr)) {
1778                 iwl_print_hex_dump(priv, IWL_DL_INFO , rxb, 32);
1779                 return;
1780         }
1781
1782         cmd_index = get_cmd_index(&priv->txq[IWL_CMD_QUEUE_NUM].q, index, huge);
1783         cmd = priv->txq[IWL_CMD_QUEUE_NUM].cmd[cmd_index];
1784
1785         /* Input error checking is done when commands are added to queue. */
1786         if (cmd->meta.flags & CMD_WANT_SKB) {
1787                 cmd->meta.source->u.skb = rxb->skb;
1788                 rxb->skb = NULL;
1789         } else if (cmd->meta.u.callback &&
1790                    !cmd->meta.u.callback(priv, cmd, rxb->skb))
1791                 rxb->skb = NULL;
1792
1793         iwl3945_cmd_queue_reclaim(priv, txq_id, index);
1794
1795         if (!(cmd->meta.flags & CMD_ASYNC)) {
1796                 clear_bit(STATUS_HCMD_ACTIVE, &priv->status);
1797                 wake_up_interruptible(&priv->wait_command_queue);
1798         }
1799 }
1800
1801 /************************** RX-FUNCTIONS ****************************/
1802 /*
1803  * Rx theory of operation
1804  *
1805  * The host allocates 32 DMA target addresses and passes the host address
1806  * to the firmware at register IWL_RFDS_TABLE_LOWER + N * RFD_SIZE where N is
1807  * 0 to 31
1808  *
1809  * Rx Queue Indexes
1810  * The host/firmware share two index registers for managing the Rx buffers.
1811  *
1812  * The READ index maps to the first position that the firmware may be writing
1813  * to -- the driver can read up to (but not including) this position and get
1814  * good data.
1815  * The READ index is managed by the firmware once the card is enabled.
1816  *
1817  * The WRITE index maps to the last position the driver has read from -- the
1818  * position preceding WRITE is the last slot the firmware can place a packet.
1819  *
1820  * The queue is empty (no good data) if WRITE = READ - 1, and is full if
1821  * WRITE = READ.
1822  *
1823  * During initialization, the host sets up the READ queue position to the first
1824  * INDEX position, and WRITE to the last (READ - 1 wrapped)
1825  *
1826  * When the firmware places a packet in a buffer, it will advance the READ index
1827  * and fire the RX interrupt.  The driver can then query the READ index and
1828  * process as many packets as possible, moving the WRITE index forward as it
1829  * resets the Rx queue buffers with new memory.
1830  *
1831  * The management in the driver is as follows:
1832  * + A list of pre-allocated SKBs is stored in iwl->rxq->rx_free.  When
1833  *   iwl->rxq->free_count drops to or below RX_LOW_WATERMARK, work is scheduled
1834  *   to replenish the iwl->rxq->rx_free.
1835  * + In iwl3945_rx_replenish (scheduled) if 'processed' != 'read' then the
1836  *   iwl->rxq is replenished and the READ INDEX is updated (updating the
1837  *   'processed' and 'read' driver indexes as well)
1838  * + A received packet is processed and handed to the kernel network stack,
1839  *   detached from the iwl->rxq.  The driver 'processed' index is updated.
1840  * + The Host/Firmware iwl->rxq is replenished at tasklet time from the rx_free
1841  *   list. If there are no allocated buffers in iwl->rxq->rx_free, the READ
1842  *   INDEX is not incremented and iwl->status(RX_STALLED) is set.  If there
1843  *   were enough free buffers and RX_STALLED is set it is cleared.
1844  *
1845  *
1846  * Driver sequence:
1847  *
1848  * iwl3945_rx_replenish()     Replenishes rx_free list from rx_used, and calls
1849  *                            iwl3945_rx_queue_restock
1850  * iwl3945_rx_queue_restock() Moves available buffers from rx_free into Rx
1851  *                            queue, updates firmware pointers, and updates
1852  *                            the WRITE index.  If insufficient rx_free buffers
1853  *                            are available, schedules iwl3945_rx_replenish
1854  *
1855  * -- enable interrupts --
1856  * ISR - iwl3945_rx()         Detach iwl_rx_mem_buffers from pool up to the
1857  *                            READ INDEX, detaching the SKB from the pool.
1858  *                            Moves the packet buffer from queue to rx_used.
1859  *                            Calls iwl3945_rx_queue_restock to refill any empty
1860  *                            slots.
1861  * ...
1862  *
1863  */
1864
1865 /**
1866  * iwl3945_dma_addr2rbd_ptr - convert a DMA address to a uCode read buffer ptr
1867  */
1868 static inline __le32 iwl3945_dma_addr2rbd_ptr(struct iwl_priv *priv,
1869                                           dma_addr_t dma_addr)
1870 {
1871         return cpu_to_le32((u32)dma_addr);
1872 }
1873
1874 /**
1875  * iwl3945_rx_queue_restock - refill RX queue from pre-allocated pool
1876  *
1877  * If there are slots in the RX queue that need to be restocked,
1878  * and we have free pre-allocated buffers, fill the ranks as much
1879  * as we can, pulling from rx_free.
1880  *
1881  * This moves the 'write' index forward to catch up with 'processed', and
1882  * also updates the memory address in the firmware to reference the new
1883  * target buffer.
1884  */
1885 static int iwl3945_rx_queue_restock(struct iwl_priv *priv)
1886 {
1887         struct iwl_rx_queue *rxq = &priv->rxq;
1888         struct list_head *element;
1889         struct iwl_rx_mem_buffer *rxb;
1890         unsigned long flags;
1891         int write, rc;
1892
1893         spin_lock_irqsave(&rxq->lock, flags);
1894         write = rxq->write & ~0x7;
1895         while ((iwl_rx_queue_space(rxq) > 0) && (rxq->free_count)) {
1896                 /* Get next free Rx buffer, remove from free list */
1897                 element = rxq->rx_free.next;
1898                 rxb = list_entry(element, struct iwl_rx_mem_buffer, list);
1899                 list_del(element);
1900
1901                 /* Point to Rx buffer via next RBD in circular buffer */
1902                 rxq->bd[rxq->write] = iwl3945_dma_addr2rbd_ptr(priv, rxb->real_dma_addr);
1903                 rxq->queue[rxq->write] = rxb;
1904                 rxq->write = (rxq->write + 1) & RX_QUEUE_MASK;
1905                 rxq->free_count--;
1906         }
1907         spin_unlock_irqrestore(&rxq->lock, flags);
1908         /* If the pre-allocated buffer pool is dropping low, schedule to
1909          * refill it */
1910         if (rxq->free_count <= RX_LOW_WATERMARK)
1911                 queue_work(priv->workqueue, &priv->rx_replenish);
1912
1913
1914         /* If we've added more space for the firmware to place data, tell it.
1915          * Increment device's write pointer in multiples of 8. */
1916         if ((write != (rxq->write & ~0x7))
1917             || (abs(rxq->write - rxq->read) > 7)) {
1918                 spin_lock_irqsave(&rxq->lock, flags);
1919                 rxq->need_update = 1;
1920                 spin_unlock_irqrestore(&rxq->lock, flags);
1921                 rc = iwl_rx_queue_update_write_ptr(priv, rxq);
1922                 if (rc)
1923                         return rc;
1924         }
1925
1926         return 0;
1927 }
1928
1929 /**
1930  * iwl3945_rx_replenish - Move all used packet from rx_used to rx_free
1931  *
1932  * When moving to rx_free an SKB is allocated for the slot.
1933  *
1934  * Also restock the Rx queue via iwl3945_rx_queue_restock.
1935  * This is called as a scheduled work item (except for during initialization)
1936  */
1937 static void iwl3945_rx_allocate(struct iwl_priv *priv)
1938 {
1939         struct iwl_rx_queue *rxq = &priv->rxq;
1940         struct list_head *element;
1941         struct iwl_rx_mem_buffer *rxb;
1942         unsigned long flags;
1943         spin_lock_irqsave(&rxq->lock, flags);
1944         while (!list_empty(&rxq->rx_used)) {
1945                 element = rxq->rx_used.next;
1946                 rxb = list_entry(element, struct iwl_rx_mem_buffer, list);
1947
1948                 /* Alloc a new receive buffer */
1949                 rxb->skb =
1950                     alloc_skb(priv->hw_params.rx_buf_size,
1951                                 __GFP_NOWARN | GFP_ATOMIC);
1952                 if (!rxb->skb) {
1953                         if (net_ratelimit())
1954                                 IWL_CRIT(priv, ": Can not allocate SKB buffers\n");
1955                         /* We don't reschedule replenish work here -- we will
1956                          * call the restock method and if it still needs
1957                          * more buffers it will schedule replenish */
1958                         break;
1959                 }
1960
1961                 /* If radiotap head is required, reserve some headroom here.
1962                  * The physical head count is a variable rx_stats->phy_count.
1963                  * We reserve 4 bytes here. Plus these extra bytes, the
1964                  * headroom of the physical head should be enough for the
1965                  * radiotap head that iwl3945 supported. See iwl3945_rt.
1966                  */
1967                 skb_reserve(rxb->skb, 4);
1968
1969                 priv->alloc_rxb_skb++;
1970                 list_del(element);
1971
1972                 /* Get physical address of RB/SKB */
1973                 rxb->real_dma_addr = pci_map_single(priv->pci_dev,
1974                                                 rxb->skb->data,
1975                                                 priv->hw_params.rx_buf_size,
1976                                                 PCI_DMA_FROMDEVICE);
1977                 list_add_tail(&rxb->list, &rxq->rx_free);
1978                 rxq->free_count++;
1979         }
1980         spin_unlock_irqrestore(&rxq->lock, flags);
1981 }
1982
1983 /*
1984  * this should be called while priv->lock is locked
1985  */
1986 static void __iwl3945_rx_replenish(void *data)
1987 {
1988         struct iwl_priv *priv = data;
1989
1990         iwl3945_rx_allocate(priv);
1991         iwl3945_rx_queue_restock(priv);
1992 }
1993
1994
1995 void iwl3945_rx_replenish(void *data)
1996 {
1997         struct iwl_priv *priv = data;
1998         unsigned long flags;
1999
2000         iwl3945_rx_allocate(priv);
2001
2002         spin_lock_irqsave(&priv->lock, flags);
2003         iwl3945_rx_queue_restock(priv);
2004         spin_unlock_irqrestore(&priv->lock, flags);
2005 }
2006
2007 /* Convert linear signal-to-noise ratio into dB */
2008 static u8 ratio2dB[100] = {
2009 /*       0   1   2   3   4   5   6   7   8   9 */
2010          0,  0,  6, 10, 12, 14, 16, 17, 18, 19, /* 00 - 09 */
2011         20, 21, 22, 22, 23, 23, 24, 25, 26, 26, /* 10 - 19 */
2012         26, 26, 26, 27, 27, 28, 28, 28, 29, 29, /* 20 - 29 */
2013         29, 30, 30, 30, 31, 31, 31, 31, 32, 32, /* 30 - 39 */
2014         32, 32, 32, 33, 33, 33, 33, 33, 34, 34, /* 40 - 49 */
2015         34, 34, 34, 34, 35, 35, 35, 35, 35, 35, /* 50 - 59 */
2016         36, 36, 36, 36, 36, 36, 36, 37, 37, 37, /* 60 - 69 */
2017         37, 37, 37, 37, 37, 38, 38, 38, 38, 38, /* 70 - 79 */
2018         38, 38, 38, 38, 38, 39, 39, 39, 39, 39, /* 80 - 89 */
2019         39, 39, 39, 39, 39, 40, 40, 40, 40, 40  /* 90 - 99 */
2020 };
2021
2022 /* Calculates a relative dB value from a ratio of linear
2023  *   (i.e. not dB) signal levels.
2024  * Conversion assumes that levels are voltages (20*log), not powers (10*log). */
2025 int iwl3945_calc_db_from_ratio(int sig_ratio)
2026 {
2027         /* 1000:1 or higher just report as 60 dB */
2028         if (sig_ratio >= 1000)
2029                 return 60;
2030
2031         /* 100:1 or higher, divide by 10 and use table,
2032          *   add 20 dB to make up for divide by 10 */
2033         if (sig_ratio >= 100)
2034                 return 20 + (int)ratio2dB[sig_ratio/10];
2035
2036         /* We shouldn't see this */
2037         if (sig_ratio < 1)
2038                 return 0;
2039
2040         /* Use table for ratios 1:1 - 99:1 */
2041         return (int)ratio2dB[sig_ratio];
2042 }
2043
2044 #define PERFECT_RSSI (-20) /* dBm */
2045 #define WORST_RSSI (-95)   /* dBm */
2046 #define RSSI_RANGE (PERFECT_RSSI - WORST_RSSI)
2047
2048 /* Calculate an indication of rx signal quality (a percentage, not dBm!).
2049  * See http://www.ces.clemson.edu/linux/signal_quality.shtml for info
2050  *   about formulas used below. */
2051 int iwl3945_calc_sig_qual(int rssi_dbm, int noise_dbm)
2052 {
2053         int sig_qual;
2054         int degradation = PERFECT_RSSI - rssi_dbm;
2055
2056         /* If we get a noise measurement, use signal-to-noise ratio (SNR)
2057          * as indicator; formula is (signal dbm - noise dbm).
2058          * SNR at or above 40 is a great signal (100%).
2059          * Below that, scale to fit SNR of 0 - 40 dB within 0 - 100% indicator.
2060          * Weakest usable signal is usually 10 - 15 dB SNR. */
2061         if (noise_dbm) {
2062                 if (rssi_dbm - noise_dbm >= 40)
2063                         return 100;
2064                 else if (rssi_dbm < noise_dbm)
2065                         return 0;
2066                 sig_qual = ((rssi_dbm - noise_dbm) * 5) / 2;
2067
2068         /* Else use just the signal level.
2069          * This formula is a least squares fit of data points collected and
2070          *   compared with a reference system that had a percentage (%) display
2071          *   for signal quality. */
2072         } else
2073                 sig_qual = (100 * (RSSI_RANGE * RSSI_RANGE) - degradation *
2074                             (15 * RSSI_RANGE + 62 * degradation)) /
2075                            (RSSI_RANGE * RSSI_RANGE);
2076
2077         if (sig_qual > 100)
2078                 sig_qual = 100;
2079         else if (sig_qual < 1)
2080                 sig_qual = 0;
2081
2082         return sig_qual;
2083 }
2084
2085 /**
2086  * iwl3945_rx_handle - Main entry function for receiving responses from uCode
2087  *
2088  * Uses the priv->rx_handlers callback function array to invoke
2089  * the appropriate handlers, including command responses,
2090  * frame-received notifications, and other notifications.
2091  */
2092 static void iwl3945_rx_handle(struct iwl_priv *priv)
2093 {
2094         struct iwl_rx_mem_buffer *rxb;
2095         struct iwl_rx_packet *pkt;
2096         struct iwl_rx_queue *rxq = &priv->rxq;
2097         u32 r, i;
2098         int reclaim;
2099         unsigned long flags;
2100         u8 fill_rx = 0;
2101         u32 count = 8;
2102
2103         /* uCode's read index (stored in shared DRAM) indicates the last Rx
2104          * buffer that the driver may process (last buffer filled by ucode). */
2105         r = le16_to_cpu(rxq->rb_stts->closed_rb_num) &  0x0FFF;
2106         i = rxq->read;
2107
2108         if (iwl_rx_queue_space(rxq) > (RX_QUEUE_SIZE / 2))
2109                 fill_rx = 1;
2110         /* Rx interrupt, but nothing sent from uCode */
2111         if (i == r)
2112                 IWL_DEBUG(priv, IWL_DL_RX | IWL_DL_ISR, "r = %d, i = %d\n", r, i);
2113
2114         while (i != r) {
2115                 rxb = rxq->queue[i];
2116
2117                 /* If an RXB doesn't have a Rx queue slot associated with it,
2118                  * then a bug has been introduced in the queue refilling
2119                  * routines -- catch it here */
2120                 BUG_ON(rxb == NULL);
2121
2122                 rxq->queue[i] = NULL;
2123
2124                 pci_dma_sync_single_for_cpu(priv->pci_dev, rxb->real_dma_addr,
2125                                             priv->hw_params.rx_buf_size,
2126                                             PCI_DMA_FROMDEVICE);
2127                 pkt = (struct iwl_rx_packet *)rxb->skb->data;
2128
2129                 /* Reclaim a command buffer only if this packet is a response
2130                  *   to a (driver-originated) command.
2131                  * If the packet (e.g. Rx frame) originated from uCode,
2132                  *   there is no command buffer to reclaim.
2133                  * Ucode should set SEQ_RX_FRAME bit if ucode-originated,
2134                  *   but apparently a few don't get set; catch them here. */
2135                 reclaim = !(pkt->hdr.sequence & SEQ_RX_FRAME) &&
2136                         (pkt->hdr.cmd != STATISTICS_NOTIFICATION) &&
2137                         (pkt->hdr.cmd != REPLY_TX);
2138
2139                 /* Based on type of command response or notification,
2140                  *   handle those that need handling via function in
2141                  *   rx_handlers table.  See iwl3945_setup_rx_handlers() */
2142                 if (priv->rx_handlers[pkt->hdr.cmd]) {
2143                         IWL_DEBUG(priv, IWL_DL_HCMD | IWL_DL_RX | IWL_DL_ISR,
2144                                 "r = %d, i = %d, %s, 0x%02x\n", r, i,
2145                                 get_cmd_string(pkt->hdr.cmd), pkt->hdr.cmd);
2146                         priv->rx_handlers[pkt->hdr.cmd] (priv, rxb);
2147                 } else {
2148                         /* No handling needed */
2149                         IWL_DEBUG(priv, IWL_DL_HCMD | IWL_DL_RX | IWL_DL_ISR,
2150                                 "r %d i %d No handler needed for %s, 0x%02x\n",
2151                                 r, i, get_cmd_string(pkt->hdr.cmd),
2152                                 pkt->hdr.cmd);
2153                 }
2154
2155                 if (reclaim) {
2156                         /* Invoke any callbacks, transfer the skb to caller, and
2157                          * fire off the (possibly) blocking iwl_send_cmd()
2158                          * as we reclaim the driver command queue */
2159                         if (rxb && rxb->skb)
2160                                 iwl3945_tx_cmd_complete(priv, rxb);
2161                         else
2162                                 IWL_WARN(priv, "Claim null rxb?\n");
2163                 }
2164
2165                 /* For now we just don't re-use anything.  We can tweak this
2166                  * later to try and re-use notification packets and SKBs that
2167                  * fail to Rx correctly */
2168                 if (rxb->skb != NULL) {
2169                         priv->alloc_rxb_skb--;
2170                         dev_kfree_skb_any(rxb->skb);
2171                         rxb->skb = NULL;
2172                 }
2173
2174                 pci_unmap_single(priv->pci_dev, rxb->real_dma_addr,
2175                                 priv->hw_params.rx_buf_size,
2176                                 PCI_DMA_FROMDEVICE);
2177                 spin_lock_irqsave(&rxq->lock, flags);
2178                 list_add_tail(&rxb->list, &priv->rxq.rx_used);
2179                 spin_unlock_irqrestore(&rxq->lock, flags);
2180                 i = (i + 1) & RX_QUEUE_MASK;
2181                 /* If there are a lot of unused frames,
2182                  * restock the Rx queue so ucode won't assert. */
2183                 if (fill_rx) {
2184                         count++;
2185                         if (count >= 8) {
2186                                 priv->rxq.read = i;
2187                                 __iwl3945_rx_replenish(priv);
2188                                 count = 0;
2189                         }
2190                 }
2191         }
2192
2193         /* Backtrack one entry */
2194         priv->rxq.read = i;
2195         iwl3945_rx_queue_restock(priv);
2196 }
2197
2198 static void iwl3945_enable_interrupts(struct iwl_priv *priv)
2199 {
2200         IWL_DEBUG_ISR(priv, "Enabling interrupts\n");
2201         set_bit(STATUS_INT_ENABLED, &priv->status);
2202         iwl_write32(priv, CSR_INT_MASK, CSR_INI_SET_MASK);
2203 }
2204
2205
2206 /* call this function to flush any scheduled tasklet */
2207 static inline void iwl_synchronize_irq(struct iwl_priv *priv)
2208 {
2209         /* wait to make sure we flush pending tasklet*/
2210         synchronize_irq(priv->pci_dev->irq);
2211         tasklet_kill(&priv->irq_tasklet);
2212 }
2213
2214
2215 static inline void iwl3945_disable_interrupts(struct iwl_priv *priv)
2216 {
2217         clear_bit(STATUS_INT_ENABLED, &priv->status);
2218
2219         /* disable interrupts from uCode/NIC to host */
2220         iwl_write32(priv, CSR_INT_MASK, 0x00000000);
2221
2222         /* acknowledge/clear/reset any interrupts still pending
2223          * from uCode or flow handler (Rx/Tx DMA) */
2224         iwl_write32(priv, CSR_INT, 0xffffffff);
2225         iwl_write32(priv, CSR_FH_INT_STATUS, 0xffffffff);
2226         IWL_DEBUG_ISR(priv, "Disabled interrupts\n");
2227 }
2228
2229 static const char *desc_lookup(int i)
2230 {
2231         switch (i) {
2232         case 1:
2233                 return "FAIL";
2234         case 2:
2235                 return "BAD_PARAM";
2236         case 3:
2237                 return "BAD_CHECKSUM";
2238         case 4:
2239                 return "NMI_INTERRUPT";
2240         case 5:
2241                 return "SYSASSERT";
2242         case 6:
2243                 return "FATAL_ERROR";
2244         }
2245
2246         return "UNKNOWN";
2247 }
2248
2249 #define ERROR_START_OFFSET  (1 * sizeof(u32))
2250 #define ERROR_ELEM_SIZE     (7 * sizeof(u32))
2251
2252 static void iwl3945_dump_nic_error_log(struct iwl_priv *priv)
2253 {
2254         u32 i;
2255         u32 desc, time, count, base, data1;
2256         u32 blink1, blink2, ilink1, ilink2;
2257         int rc;
2258
2259         base = le32_to_cpu(priv->card_alive.error_event_table_ptr);
2260
2261         if (!iwl3945_hw_valid_rtc_data_addr(base)) {
2262                 IWL_ERR(priv, "Not valid error log pointer 0x%08X\n", base);
2263                 return;
2264         }
2265
2266         rc = iwl_grab_nic_access(priv);
2267         if (rc) {
2268                 IWL_WARN(priv, "Can not read from adapter at this time.\n");
2269                 return;
2270         }
2271
2272         count = iwl_read_targ_mem(priv, base);
2273
2274         if (ERROR_START_OFFSET <= count * ERROR_ELEM_SIZE) {
2275                 IWL_ERR(priv, "Start IWL Error Log Dump:\n");
2276                 IWL_ERR(priv, "Status: 0x%08lX, count: %d\n",
2277                         priv->status, count);
2278         }
2279
2280         IWL_ERR(priv, "Desc       Time       asrtPC  blink2 "
2281                   "ilink1  nmiPC   Line\n");
2282         for (i = ERROR_START_OFFSET;
2283              i < (count * ERROR_ELEM_SIZE) + ERROR_START_OFFSET;
2284              i += ERROR_ELEM_SIZE) {
2285                 desc = iwl_read_targ_mem(priv, base + i);
2286                 time =
2287                     iwl_read_targ_mem(priv, base + i + 1 * sizeof(u32));
2288                 blink1 =
2289                     iwl_read_targ_mem(priv, base + i + 2 * sizeof(u32));
2290                 blink2 =
2291                     iwl_read_targ_mem(priv, base + i + 3 * sizeof(u32));
2292                 ilink1 =
2293                     iwl_read_targ_mem(priv, base + i + 4 * sizeof(u32));
2294                 ilink2 =
2295                     iwl_read_targ_mem(priv, base + i + 5 * sizeof(u32));
2296                 data1 =
2297                     iwl_read_targ_mem(priv, base + i + 6 * sizeof(u32));
2298
2299                 IWL_ERR(priv,
2300                         "%-13s (#%d) %010u 0x%05X 0x%05X 0x%05X 0x%05X %u\n\n",
2301                         desc_lookup(desc), desc, time, blink1, blink2,
2302                         ilink1, ilink2, data1);
2303         }
2304
2305         iwl_release_nic_access(priv);
2306
2307 }
2308
2309 #define EVENT_START_OFFSET  (6 * sizeof(u32))
2310
2311 /**
2312  * iwl3945_print_event_log - Dump error event log to syslog
2313  *
2314  * NOTE: Must be called with iwl_grab_nic_access() already obtained!
2315  */
2316 static void iwl3945_print_event_log(struct iwl_priv *priv, u32 start_idx,
2317                                 u32 num_events, u32 mode)
2318 {
2319         u32 i;
2320         u32 base;       /* SRAM byte address of event log header */
2321         u32 event_size; /* 2 u32s, or 3 u32s if timestamp recorded */
2322         u32 ptr;        /* SRAM byte address of log data */
2323         u32 ev, time, data; /* event log data */
2324
2325         if (num_events == 0)
2326                 return;
2327
2328         base = le32_to_cpu(priv->card_alive.log_event_table_ptr);
2329
2330         if (mode == 0)
2331                 event_size = 2 * sizeof(u32);
2332         else
2333                 event_size = 3 * sizeof(u32);
2334
2335         ptr = base + EVENT_START_OFFSET + (start_idx * event_size);
2336
2337         /* "time" is actually "data" for mode 0 (no timestamp).
2338          * place event id # at far right for easier visual parsing. */
2339         for (i = 0; i < num_events; i++) {
2340                 ev = iwl_read_targ_mem(priv, ptr);
2341                 ptr += sizeof(u32);
2342                 time = iwl_read_targ_mem(priv, ptr);
2343                 ptr += sizeof(u32);
2344                 if (mode == 0) {
2345                         /* data, ev */
2346                         IWL_ERR(priv, "0x%08x\t%04u\n", time, ev);
2347                 } else {
2348                         data = iwl_read_targ_mem(priv, ptr);
2349                         ptr += sizeof(u32);
2350                         IWL_ERR(priv, "%010u\t0x%08x\t%04u\n", time, data, ev);
2351                 }
2352         }
2353 }
2354
2355 static void iwl3945_dump_nic_event_log(struct iwl_priv *priv)
2356 {
2357         int rc;
2358         u32 base;       /* SRAM byte address of event log header */
2359         u32 capacity;   /* event log capacity in # entries */
2360         u32 mode;       /* 0 - no timestamp, 1 - timestamp recorded */
2361         u32 num_wraps;  /* # times uCode wrapped to top of log */
2362         u32 next_entry; /* index of next entry to be written by uCode */
2363         u32 size;       /* # entries that we'll print */
2364
2365         base = le32_to_cpu(priv->card_alive.log_event_table_ptr);
2366         if (!iwl3945_hw_valid_rtc_data_addr(base)) {
2367                 IWL_ERR(priv, "Invalid event log pointer 0x%08X\n", base);
2368                 return;
2369         }
2370
2371         rc = iwl_grab_nic_access(priv);
2372         if (rc) {
2373                 IWL_WARN(priv, "Can not read from adapter at this time.\n");
2374                 return;
2375         }
2376
2377         /* event log header */
2378         capacity = iwl_read_targ_mem(priv, base);
2379         mode = iwl_read_targ_mem(priv, base + (1 * sizeof(u32)));
2380         num_wraps = iwl_read_targ_mem(priv, base + (2 * sizeof(u32)));
2381         next_entry = iwl_read_targ_mem(priv, base + (3 * sizeof(u32)));
2382
2383         size = num_wraps ? capacity : next_entry;
2384
2385         /* bail out if nothing in log */
2386         if (size == 0) {
2387                 IWL_ERR(priv, "Start IWL Event Log Dump: nothing in log\n");
2388                 iwl_release_nic_access(priv);
2389                 return;
2390         }
2391
2392         IWL_ERR(priv, "Start IWL Event Log Dump: display count %d, wraps %d\n",
2393                   size, num_wraps);
2394
2395         /* if uCode has wrapped back to top of log, start at the oldest entry,
2396          * i.e the next one that uCode would fill. */
2397         if (num_wraps)
2398                 iwl3945_print_event_log(priv, next_entry,
2399                                     capacity - next_entry, mode);
2400
2401         /* (then/else) start at top of log */
2402         iwl3945_print_event_log(priv, 0, next_entry, mode);
2403
2404         iwl_release_nic_access(priv);
2405 }
2406
2407 static void iwl3945_error_recovery(struct iwl_priv *priv)
2408 {
2409         unsigned long flags;
2410
2411         memcpy(&priv->staging_rxon, &priv->recovery_rxon,
2412                sizeof(priv->staging_rxon));
2413         priv->staging_rxon.filter_flags &= ~RXON_FILTER_ASSOC_MSK;
2414         iwl3945_commit_rxon(priv);
2415
2416         iwl3945_add_station(priv, priv->bssid, 1, 0);
2417
2418         spin_lock_irqsave(&priv->lock, flags);
2419         priv->assoc_id = le16_to_cpu(priv->staging_rxon.assoc_id);
2420         priv->error_recovering = 0;
2421         spin_unlock_irqrestore(&priv->lock, flags);
2422 }
2423
2424 static void iwl3945_irq_tasklet(struct iwl_priv *priv)
2425 {
2426         u32 inta, handled = 0;
2427         u32 inta_fh;
2428         unsigned long flags;
2429 #ifdef CONFIG_IWLWIFI_DEBUG
2430         u32 inta_mask;
2431 #endif
2432
2433         spin_lock_irqsave(&priv->lock, flags);
2434
2435         /* Ack/clear/reset pending uCode interrupts.
2436          * Note:  Some bits in CSR_INT are "OR" of bits in CSR_FH_INT_STATUS,
2437          *  and will clear only when CSR_FH_INT_STATUS gets cleared. */
2438         inta = iwl_read32(priv, CSR_INT);
2439         iwl_write32(priv, CSR_INT, inta);
2440
2441         /* Ack/clear/reset pending flow-handler (DMA) interrupts.
2442          * Any new interrupts that happen after this, either while we're
2443          * in this tasklet, or later, will show up in next ISR/tasklet. */
2444         inta_fh = iwl_read32(priv, CSR_FH_INT_STATUS);
2445         iwl_write32(priv, CSR_FH_INT_STATUS, inta_fh);
2446
2447 #ifdef CONFIG_IWLWIFI_DEBUG
2448         if (priv->debug_level & IWL_DL_ISR) {
2449                 /* just for debug */
2450                 inta_mask = iwl_read32(priv, CSR_INT_MASK);
2451                 IWL_DEBUG_ISR(priv, "inta 0x%08x, enabled 0x%08x, fh 0x%08x\n",
2452                               inta, inta_mask, inta_fh);
2453         }
2454 #endif
2455
2456         /* Since CSR_INT and CSR_FH_INT_STATUS reads and clears are not
2457          * atomic, make sure that inta covers all the interrupts that
2458          * we've discovered, even if FH interrupt came in just after
2459          * reading CSR_INT. */
2460         if (inta_fh & CSR39_FH_INT_RX_MASK)
2461                 inta |= CSR_INT_BIT_FH_RX;
2462         if (inta_fh & CSR39_FH_INT_TX_MASK)
2463                 inta |= CSR_INT_BIT_FH_TX;
2464
2465         /* Now service all interrupt bits discovered above. */
2466         if (inta & CSR_INT_BIT_HW_ERR) {
2467                 IWL_ERR(priv, "Microcode HW error detected.  Restarting.\n");
2468
2469                 /* Tell the device to stop sending interrupts */
2470                 iwl3945_disable_interrupts(priv);
2471
2472                 iwl_irq_handle_error(priv);
2473
2474                 handled |= CSR_INT_BIT_HW_ERR;
2475
2476                 spin_unlock_irqrestore(&priv->lock, flags);
2477
2478                 return;
2479         }
2480
2481 #ifdef CONFIG_IWLWIFI_DEBUG
2482         if (priv->debug_level & (IWL_DL_ISR)) {
2483                 /* NIC fires this, but we don't use it, redundant with WAKEUP */
2484                 if (inta & CSR_INT_BIT_SCD)
2485                         IWL_DEBUG_ISR(priv, "Scheduler finished to transmit "
2486                                       "the frame/frames.\n");
2487
2488                 /* Alive notification via Rx interrupt will do the real work */
2489                 if (inta & CSR_INT_BIT_ALIVE)
2490                         IWL_DEBUG_ISR(priv, "Alive interrupt\n");
2491         }
2492 #endif
2493         /* Safely ignore these bits for debug checks below */
2494         inta &= ~(CSR_INT_BIT_SCD | CSR_INT_BIT_ALIVE);
2495
2496         /* Error detected by uCode */
2497         if (inta & CSR_INT_BIT_SW_ERR) {
2498                 IWL_ERR(priv, "Microcode SW error detected. "
2499                         "Restarting 0x%X.\n", inta);
2500                 iwl_irq_handle_error(priv);
2501                 handled |= CSR_INT_BIT_SW_ERR;
2502         }
2503
2504         /* uCode wakes up after power-down sleep */
2505         if (inta & CSR_INT_BIT_WAKEUP) {
2506                 IWL_DEBUG_ISR(priv, "Wakeup interrupt\n");
2507                 iwl_rx_queue_update_write_ptr(priv, &priv->rxq);
2508                 iwl_txq_update_write_ptr(priv, &priv->txq[0]);
2509                 iwl_txq_update_write_ptr(priv, &priv->txq[1]);
2510                 iwl_txq_update_write_ptr(priv, &priv->txq[2]);
2511                 iwl_txq_update_write_ptr(priv, &priv->txq[3]);
2512                 iwl_txq_update_write_ptr(priv, &priv->txq[4]);
2513                 iwl_txq_update_write_ptr(priv, &priv->txq[5]);
2514
2515                 handled |= CSR_INT_BIT_WAKEUP;
2516         }
2517
2518         /* All uCode command responses, including Tx command responses,
2519          * Rx "responses" (frame-received notification), and other
2520          * notifications from uCode come through here*/
2521         if (inta & (CSR_INT_BIT_FH_RX | CSR_INT_BIT_SW_RX)) {
2522                 iwl3945_rx_handle(priv);
2523                 handled |= (CSR_INT_BIT_FH_RX | CSR_INT_BIT_SW_RX);
2524         }
2525
2526         if (inta & CSR_INT_BIT_FH_TX) {
2527                 IWL_DEBUG_ISR(priv, "Tx interrupt\n");
2528
2529                 iwl_write32(priv, CSR_FH_INT_STATUS, (1 << 6));
2530                 if (!iwl_grab_nic_access(priv)) {
2531                         iwl_write_direct32(priv, FH39_TCSR_CREDIT
2532                                              (FH39_SRVC_CHNL), 0x0);
2533                         iwl_release_nic_access(priv);
2534                 }
2535                 handled |= CSR_INT_BIT_FH_TX;
2536         }
2537
2538         if (inta & ~handled)
2539                 IWL_ERR(priv, "Unhandled INTA bits 0x%08x\n", inta & ~handled);
2540
2541         if (inta & ~CSR_INI_SET_MASK) {
2542                 IWL_WARN(priv, "Disabled INTA bits 0x%08x were pending\n",
2543                          inta & ~CSR_INI_SET_MASK);
2544                 IWL_WARN(priv, "   with FH_INT = 0x%08x\n", inta_fh);
2545         }
2546
2547         /* Re-enable all interrupts */
2548         /* only Re-enable if disabled by irq */
2549         if (test_bit(STATUS_INT_ENABLED, &priv->status))
2550                 iwl3945_enable_interrupts(priv);
2551
2552 #ifdef CONFIG_IWLWIFI_DEBUG
2553         if (priv->debug_level & (IWL_DL_ISR)) {
2554                 inta = iwl_read32(priv, CSR_INT);
2555                 inta_mask = iwl_read32(priv, CSR_INT_MASK);
2556                 inta_fh = iwl_read32(priv, CSR_FH_INT_STATUS);
2557                 IWL_DEBUG_ISR(priv, "End inta 0x%08x, enabled 0x%08x, fh 0x%08x, "
2558                         "flags 0x%08lx\n", inta, inta_mask, inta_fh, flags);
2559         }
2560 #endif
2561         spin_unlock_irqrestore(&priv->lock, flags);
2562 }
2563
2564 static irqreturn_t iwl3945_isr(int irq, void *data)
2565 {
2566         struct iwl_priv *priv = data;
2567         u32 inta, inta_mask;
2568         u32 inta_fh;
2569         if (!priv)
2570                 return IRQ_NONE;
2571
2572         spin_lock(&priv->lock);
2573
2574         /* Disable (but don't clear!) interrupts here to avoid
2575          *    back-to-back ISRs and sporadic interrupts from our NIC.
2576          * If we have something to service, the tasklet will re-enable ints.
2577          * If we *don't* have something, we'll re-enable before leaving here. */
2578         inta_mask = iwl_read32(priv, CSR_INT_MASK);  /* just for debug */
2579         iwl_write32(priv, CSR_INT_MASK, 0x00000000);
2580
2581         /* Discover which interrupts are active/pending */
2582         inta = iwl_read32(priv, CSR_INT);
2583         inta_fh = iwl_read32(priv, CSR_FH_INT_STATUS);
2584
2585         /* Ignore interrupt if there's nothing in NIC to service.
2586          * This may be due to IRQ shared with another device,
2587          * or due to sporadic interrupts thrown from our NIC. */
2588         if (!inta && !inta_fh) {
2589                 IWL_DEBUG_ISR(priv, "Ignore interrupt, inta == 0, inta_fh == 0\n");
2590                 goto none;
2591         }
2592
2593         if ((inta == 0xFFFFFFFF) || ((inta & 0xFFFFFFF0) == 0xa5a5a5a0)) {
2594                 /* Hardware disappeared */
2595                 IWL_WARN(priv, "HARDWARE GONE?? INTA == 0x%08x\n", inta);
2596                 goto unplugged;
2597         }
2598
2599         IWL_DEBUG_ISR(priv, "ISR inta 0x%08x, enabled 0x%08x, fh 0x%08x\n",
2600                       inta, inta_mask, inta_fh);
2601
2602         inta &= ~CSR_INT_BIT_SCD;
2603
2604         /* iwl3945_irq_tasklet() will service interrupts and re-enable them */
2605         if (likely(inta || inta_fh))
2606                 tasklet_schedule(&priv->irq_tasklet);
2607 unplugged:
2608         spin_unlock(&priv->lock);
2609
2610         return IRQ_HANDLED;
2611
2612  none:
2613         /* re-enable interrupts here since we don't have anything to service. */
2614         /* only Re-enable if disabled by irq */
2615         if (test_bit(STATUS_INT_ENABLED, &priv->status))
2616                 iwl3945_enable_interrupts(priv);
2617         spin_unlock(&priv->lock);
2618         return IRQ_NONE;
2619 }
2620
2621 static int iwl3945_get_channels_for_scan(struct iwl_priv *priv,
2622                                          enum ieee80211_band band,
2623                                      u8 is_active, u8 n_probes,
2624                                      struct iwl3945_scan_channel *scan_ch)
2625 {
2626         const struct ieee80211_channel *channels = NULL;
2627         const struct ieee80211_supported_band *sband;
2628         const struct iwl_channel_info *ch_info;
2629         u16 passive_dwell = 0;
2630         u16 active_dwell = 0;
2631         int added, i;
2632
2633         sband = iwl_get_hw_mode(priv, band);
2634         if (!sband)
2635                 return 0;
2636
2637         channels = sband->channels;
2638
2639         active_dwell = iwl_get_active_dwell_time(priv, band, n_probes);
2640         passive_dwell = iwl_get_passive_dwell_time(priv, band);
2641
2642         if (passive_dwell <= active_dwell)
2643                 passive_dwell = active_dwell + 1;
2644
2645         for (i = 0, added = 0; i < sband->n_channels; i++) {
2646                 if (channels[i].flags & IEEE80211_CHAN_DISABLED)
2647                         continue;
2648
2649                 scan_ch->channel = channels[i].hw_value;
2650
2651                 ch_info = iwl_get_channel_info(priv, band, scan_ch->channel);
2652                 if (!is_channel_valid(ch_info)) {
2653                         IWL_DEBUG_SCAN(priv, "Channel %d is INVALID for this band.\n",
2654                                        scan_ch->channel);
2655                         continue;
2656                 }
2657
2658                 scan_ch->active_dwell = cpu_to_le16(active_dwell);
2659                 scan_ch->passive_dwell = cpu_to_le16(passive_dwell);
2660                 /* If passive , set up for auto-switch
2661                  *  and use long active_dwell time.
2662                  */
2663                 if (!is_active || is_channel_passive(ch_info) ||
2664                     (channels[i].flags & IEEE80211_CHAN_PASSIVE_SCAN)) {
2665                         scan_ch->type = 0;      /* passive */
2666                         if (IWL_UCODE_API(priv->ucode_ver) == 1)
2667                                 scan_ch->active_dwell = cpu_to_le16(passive_dwell - 1);
2668                 } else {
2669                         scan_ch->type = 1;      /* active */
2670                 }
2671
2672                 /* Set direct probe bits. These may be used both for active
2673                  * scan channels (probes gets sent right away),
2674                  * or for passive channels (probes get se sent only after
2675                  * hearing clear Rx packet).*/
2676                 if (IWL_UCODE_API(priv->ucode_ver) >= 2) {
2677                         if (n_probes)
2678                                 scan_ch->type |= IWL39_SCAN_PROBE_MASK(n_probes);
2679                 } else {
2680                         /* uCode v1 does not allow setting direct probe bits on
2681                          * passive channel. */
2682                         if ((scan_ch->type & 1) && n_probes)
2683                                 scan_ch->type |= IWL39_SCAN_PROBE_MASK(n_probes);
2684                 }
2685
2686                 /* Set txpower levels to defaults */
2687                 scan_ch->tpc.dsp_atten = 110;
2688                 /* scan_pwr_info->tpc.dsp_atten; */
2689
2690                 /*scan_pwr_info->tpc.tx_gain; */
2691                 if (band == IEEE80211_BAND_5GHZ)
2692                         scan_ch->tpc.tx_gain = ((1 << 5) | (3 << 3)) | 3;
2693                 else {
2694                         scan_ch->tpc.tx_gain = ((1 << 5) | (5 << 3));
2695                         /* NOTE: if we were doing 6Mb OFDM for scans we'd use
2696                          * power level:
2697                          * scan_ch->tpc.tx_gain = ((1 << 5) | (2 << 3)) | 3;
2698                          */
2699                 }
2700
2701                 IWL_DEBUG_SCAN(priv, "Scanning %d [%s %d]\n",
2702                                scan_ch->channel,
2703                                (scan_ch->type & 1) ? "ACTIVE" : "PASSIVE",
2704                                (scan_ch->type & 1) ?
2705                                active_dwell : passive_dwell);
2706
2707                 scan_ch++;
2708                 added++;
2709         }
2710
2711         IWL_DEBUG_SCAN(priv, "total channels to scan %d \n", added);
2712         return added;
2713 }
2714
2715 static void iwl3945_init_hw_rates(struct iwl_priv *priv,
2716                               struct ieee80211_rate *rates)
2717 {
2718         int i;
2719
2720         for (i = 0; i < IWL_RATE_COUNT; i++) {
2721                 rates[i].bitrate = iwl3945_rates[i].ieee * 5;
2722                 rates[i].hw_value = i; /* Rate scaling will work on indexes */
2723                 rates[i].hw_value_short = i;
2724                 rates[i].flags = 0;
2725                 if ((i > IWL39_LAST_OFDM_RATE) || (i < IWL_FIRST_OFDM_RATE)) {
2726                         /*
2727                          * If CCK != 1M then set short preamble rate flag.
2728                          */
2729                         rates[i].flags |= (iwl3945_rates[i].plcp == 10) ?
2730                                 0 : IEEE80211_RATE_SHORT_PREAMBLE;
2731                 }
2732         }
2733 }
2734
2735 /******************************************************************************
2736  *
2737  * uCode download functions
2738  *
2739  ******************************************************************************/
2740
2741 static void iwl3945_dealloc_ucode_pci(struct iwl_priv *priv)
2742 {
2743         iwl_free_fw_desc(priv->pci_dev, &priv->ucode_code);
2744         iwl_free_fw_desc(priv->pci_dev, &priv->ucode_data);
2745         iwl_free_fw_desc(priv->pci_dev, &priv->ucode_data_backup);
2746         iwl_free_fw_desc(priv->pci_dev, &priv->ucode_init);
2747         iwl_free_fw_desc(priv->pci_dev, &priv->ucode_init_data);
2748         iwl_free_fw_desc(priv->pci_dev, &priv->ucode_boot);
2749 }
2750
2751 /**
2752  * iwl3945_verify_inst_full - verify runtime uCode image in card vs. host,
2753  *     looking at all data.
2754  */
2755 static int iwl3945_verify_inst_full(struct iwl_priv *priv, __le32 *image, u32 len)
2756 {
2757         u32 val;
2758         u32 save_len = len;
2759         int rc = 0;
2760         u32 errcnt;
2761
2762         IWL_DEBUG_INFO(priv, "ucode inst image size is %u\n", len);
2763
2764         rc = iwl_grab_nic_access(priv);
2765         if (rc)
2766                 return rc;
2767
2768         iwl_write_direct32(priv, HBUS_TARG_MEM_RADDR,
2769                                IWL39_RTC_INST_LOWER_BOUND);
2770
2771         errcnt = 0;
2772         for (; len > 0; len -= sizeof(u32), image++) {
2773                 /* read data comes through single port, auto-incr addr */
2774                 /* NOTE: Use the debugless read so we don't flood kernel log
2775                  * if IWL_DL_IO is set */
2776                 val = _iwl_read_direct32(priv, HBUS_TARG_MEM_RDAT);
2777                 if (val != le32_to_cpu(*image)) {
2778                         IWL_ERR(priv, "uCode INST section is invalid at "
2779                                   "offset 0x%x, is 0x%x, s/b 0x%x\n",
2780                                   save_len - len, val, le32_to_cpu(*image));
2781                         rc = -EIO;
2782                         errcnt++;
2783                         if (errcnt >= 20)
2784                                 break;
2785                 }
2786         }
2787
2788         iwl_release_nic_access(priv);
2789
2790         if (!errcnt)
2791                 IWL_DEBUG_INFO(priv,
2792                         "ucode image in INSTRUCTION memory is good\n");
2793
2794         return rc;
2795 }
2796
2797
2798 /**
2799  * iwl3945_verify_inst_sparse - verify runtime uCode image in card vs. host,
2800  *   using sample data 100 bytes apart.  If these sample points are good,
2801  *   it's a pretty good bet that everything between them is good, too.
2802  */
2803 static int iwl3945_verify_inst_sparse(struct iwl_priv *priv, __le32 *image, u32 len)
2804 {
2805         u32 val;
2806         int rc = 0;
2807         u32 errcnt = 0;
2808         u32 i;
2809
2810         IWL_DEBUG_INFO(priv, "ucode inst image size is %u\n", len);
2811
2812         rc = iwl_grab_nic_access(priv);
2813         if (rc)
2814                 return rc;
2815
2816         for (i = 0; i < len; i += 100, image += 100/sizeof(u32)) {
2817                 /* read data comes through single port, auto-incr addr */
2818                 /* NOTE: Use the debugless read so we don't flood kernel log
2819                  * if IWL_DL_IO is set */
2820                 iwl_write_direct32(priv, HBUS_TARG_MEM_RADDR,
2821                         i + IWL39_RTC_INST_LOWER_BOUND);
2822                 val = _iwl_read_direct32(priv, HBUS_TARG_MEM_RDAT);
2823                 if (val != le32_to_cpu(*image)) {
2824 #if 0 /* Enable this if you want to see details */
2825                         IWL_ERR(priv, "uCode INST section is invalid at "
2826                                   "offset 0x%x, is 0x%x, s/b 0x%x\n",
2827                                   i, val, *image);
2828 #endif
2829                         rc = -EIO;
2830                         errcnt++;
2831                         if (errcnt >= 3)
2832                                 break;
2833                 }
2834         }
2835
2836         iwl_release_nic_access(priv);
2837
2838         return rc;
2839 }
2840
2841
2842 /**
2843  * iwl3945_verify_ucode - determine which instruction image is in SRAM,
2844  *    and verify its contents
2845  */
2846 static int iwl3945_verify_ucode(struct iwl_priv *priv)
2847 {
2848         __le32 *image;
2849         u32 len;
2850         int rc = 0;
2851
2852         /* Try bootstrap */
2853         image = (__le32 *)priv->ucode_boot.v_addr;
2854         len = priv->ucode_boot.len;
2855         rc = iwl3945_verify_inst_sparse(priv, image, len);
2856         if (rc == 0) {
2857                 IWL_DEBUG_INFO(priv, "Bootstrap uCode is good in inst SRAM\n");
2858                 return 0;
2859         }
2860
2861         /* Try initialize */
2862         image = (__le32 *)priv->ucode_init.v_addr;
2863         len = priv->ucode_init.len;
2864         rc = iwl3945_verify_inst_sparse(priv, image, len);
2865         if (rc == 0) {
2866                 IWL_DEBUG_INFO(priv, "Initialize uCode is good in inst SRAM\n");
2867                 return 0;
2868         }
2869
2870         /* Try runtime/protocol */
2871         image = (__le32 *)priv->ucode_code.v_addr;
2872         len = priv->ucode_code.len;
2873         rc = iwl3945_verify_inst_sparse(priv, image, len);
2874         if (rc == 0) {
2875                 IWL_DEBUG_INFO(priv, "Runtime uCode is good in inst SRAM\n");
2876                 return 0;
2877         }
2878
2879         IWL_ERR(priv, "NO VALID UCODE IMAGE IN INSTRUCTION SRAM!!\n");
2880
2881         /* Since nothing seems to match, show first several data entries in
2882          * instruction SRAM, so maybe visual inspection will give a clue.
2883          * Selection of bootstrap image (vs. other images) is arbitrary. */
2884         image = (__le32 *)priv->ucode_boot.v_addr;
2885         len = priv->ucode_boot.len;
2886         rc = iwl3945_verify_inst_full(priv, image, len);
2887
2888         return rc;
2889 }
2890
2891 static void iwl3945_nic_start(struct iwl_priv *priv)
2892 {
2893         /* Remove all resets to allow NIC to operate */
2894         iwl_write32(priv, CSR_RESET, 0);
2895 }
2896
2897 /**
2898  * iwl3945_read_ucode - Read uCode images from disk file.
2899  *
2900  * Copy into buffers for card to fetch via bus-mastering
2901  */
2902 static int iwl3945_read_ucode(struct iwl_priv *priv)
2903 {
2904         struct iwl_ucode *ucode;
2905         int ret = -EINVAL, index;
2906         const struct firmware *ucode_raw;
2907         /* firmware file name contains uCode/driver compatibility version */
2908         const char *name_pre = priv->cfg->fw_name_pre;
2909         const unsigned int api_max = priv->cfg->ucode_api_max;
2910         const unsigned int api_min = priv->cfg->ucode_api_min;
2911         char buf[25];
2912         u8 *src;
2913         size_t len;
2914         u32 api_ver, inst_size, data_size, init_size, init_data_size, boot_size;
2915
2916         /* Ask kernel firmware_class module to get the boot firmware off disk.
2917          * request_firmware() is synchronous, file is in memory on return. */
2918         for (index = api_max; index >= api_min; index--) {
2919                 sprintf(buf, "%s%u%s", name_pre, index, ".ucode");
2920                 ret = request_firmware(&ucode_raw, buf, &priv->pci_dev->dev);
2921                 if (ret < 0) {
2922                         IWL_ERR(priv, "%s firmware file req failed: %d\n",
2923                                   buf, ret);
2924                         if (ret == -ENOENT)
2925                                 continue;
2926                         else
2927                                 goto error;
2928                 } else {
2929                         if (index < api_max)
2930                                 IWL_ERR(priv, "Loaded firmware %s, "
2931                                         "which is deprecated. "
2932                                         " Please use API v%u instead.\n",
2933                                           buf, api_max);
2934                         IWL_DEBUG_INFO(priv, "Got firmware '%s' file "
2935                                        "(%zd bytes) from disk\n",
2936                                        buf, ucode_raw->size);
2937                         break;
2938                 }
2939         }
2940
2941         if (ret < 0)
2942                 goto error;
2943
2944         /* Make sure that we got at least our header! */
2945         if (ucode_raw->size < sizeof(*ucode)) {
2946                 IWL_ERR(priv, "File size way too small!\n");
2947                 ret = -EINVAL;
2948                 goto err_release;
2949         }
2950
2951         /* Data from ucode file:  header followed by uCode images */
2952         ucode = (void *)ucode_raw->data;
2953
2954         priv->ucode_ver = le32_to_cpu(ucode->ver);
2955         api_ver = IWL_UCODE_API(priv->ucode_ver);
2956         inst_size = le32_to_cpu(ucode->inst_size);
2957         data_size = le32_to_cpu(ucode->data_size);
2958         init_size = le32_to_cpu(ucode->init_size);
2959         init_data_size = le32_to_cpu(ucode->init_data_size);
2960         boot_size = le32_to_cpu(ucode->boot_size);
2961
2962         /* api_ver should match the api version forming part of the
2963          * firmware filename ... but we don't check for that and only rely
2964          * on the API version read from firware header from here on forward */
2965
2966         if (api_ver < api_min || api_ver > api_max) {
2967                 IWL_ERR(priv, "Driver unable to support your firmware API. "
2968                           "Driver supports v%u, firmware is v%u.\n",
2969                           api_max, api_ver);
2970                 priv->ucode_ver = 0;
2971                 ret = -EINVAL;
2972                 goto err_release;
2973         }
2974         if (api_ver != api_max)
2975                 IWL_ERR(priv, "Firmware has old API version. Expected %u, "
2976                           "got %u. New firmware can be obtained "
2977                           "from http://www.intellinuxwireless.org.\n",
2978                           api_max, api_ver);
2979
2980         IWL_INFO(priv, "loaded firmware version %u.%u.%u.%u\n",
2981                 IWL_UCODE_MAJOR(priv->ucode_ver),
2982                 IWL_UCODE_MINOR(priv->ucode_ver),
2983                 IWL_UCODE_API(priv->ucode_ver),
2984                 IWL_UCODE_SERIAL(priv->ucode_ver));
2985
2986         IWL_DEBUG_INFO(priv, "f/w package hdr ucode version raw = 0x%x\n",
2987                        priv->ucode_ver);
2988         IWL_DEBUG_INFO(priv, "f/w package hdr runtime inst size = %u\n",
2989                        inst_size);
2990         IWL_DEBUG_INFO(priv, "f/w package hdr runtime data size = %u\n",
2991                        data_size);
2992         IWL_DEBUG_INFO(priv, "f/w package hdr init inst size = %u\n",
2993                        init_size);
2994         IWL_DEBUG_INFO(priv, "f/w package hdr init data size = %u\n",
2995                        init_data_size);
2996         IWL_DEBUG_INFO(priv, "f/w package hdr boot inst size = %u\n",
2997                        boot_size);
2998
2999
3000         /* Verify size of file vs. image size info in file's header */
3001         if (ucode_raw->size < sizeof(*ucode) +
3002                 inst_size + data_size + init_size +
3003                 init_data_size + boot_size) {
3004
3005                 IWL_DEBUG_INFO(priv, "uCode file size %zd too small\n",
3006                                ucode_raw->size);
3007                 ret = -EINVAL;
3008                 goto err_release;
3009         }
3010
3011         /* Verify that uCode images will fit in card's SRAM */
3012         if (inst_size > IWL39_MAX_INST_SIZE) {
3013                 IWL_DEBUG_INFO(priv, "uCode instr len %d too large to fit in\n",
3014                                inst_size);
3015                 ret = -EINVAL;
3016                 goto err_release;
3017         }
3018
3019         if (data_size > IWL39_MAX_DATA_SIZE) {
3020                 IWL_DEBUG_INFO(priv, "uCode data len %d too large to fit in\n",
3021                                data_size);
3022                 ret = -EINVAL;
3023                 goto err_release;
3024         }
3025         if (init_size > IWL39_MAX_INST_SIZE) {
3026                 IWL_DEBUG_INFO(priv,
3027                                 "uCode init instr len %d too large to fit in\n",
3028                                 init_size);
3029                 ret = -EINVAL;
3030                 goto err_release;
3031         }
3032         if (init_data_size > IWL39_MAX_DATA_SIZE) {
3033                 IWL_DEBUG_INFO(priv,
3034                                 "uCode init data len %d too large to fit in\n",
3035                                 init_data_size);
3036                 ret = -EINVAL;
3037                 goto err_release;
3038         }
3039         if (boot_size > IWL39_MAX_BSM_SIZE) {
3040                 IWL_DEBUG_INFO(priv,
3041                                 "uCode boot instr len %d too large to fit in\n",
3042                                 boot_size);
3043                 ret = -EINVAL;
3044                 goto err_release;
3045         }
3046
3047         /* Allocate ucode buffers for card's bus-master loading ... */
3048
3049         /* Runtime instructions and 2 copies of data:
3050          * 1) unmodified from disk
3051          * 2) backup cache for save/restore during power-downs */
3052         priv->ucode_code.len = inst_size;
3053         iwl_alloc_fw_desc(priv->pci_dev, &priv->ucode_code);
3054
3055         priv->ucode_data.len = data_size;
3056         iwl_alloc_fw_desc(priv->pci_dev, &priv->ucode_data);
3057
3058         priv->ucode_data_backup.len = data_size;
3059         iwl_alloc_fw_desc(priv->pci_dev, &priv->ucode_data_backup);
3060
3061         if (!priv->ucode_code.v_addr || !priv->ucode_data.v_addr ||
3062             !priv->ucode_data_backup.v_addr)
3063                 goto err_pci_alloc;
3064
3065         /* Initialization instructions and data */
3066         if (init_size && init_data_size) {
3067                 priv->ucode_init.len = init_size;
3068                 iwl_alloc_fw_desc(priv->pci_dev, &priv->ucode_init);
3069
3070                 priv->ucode_init_data.len = init_data_size;
3071                 iwl_alloc_fw_desc(priv->pci_dev, &priv->ucode_init_data);
3072
3073                 if (!priv->ucode_init.v_addr || !priv->ucode_init_data.v_addr)
3074                         goto err_pci_alloc;
3075         }
3076
3077         /* Bootstrap (instructions only, no data) */
3078         if (boot_size) {
3079                 priv->ucode_boot.len = boot_size;
3080                 iwl_alloc_fw_desc(priv->pci_dev, &priv->ucode_boot);
3081
3082                 if (!priv->ucode_boot.v_addr)
3083                         goto err_pci_alloc;
3084         }
3085
3086         /* Copy images into buffers for card's bus-master reads ... */
3087
3088         /* Runtime instructions (first block of data in file) */
3089         src = &ucode->data[0];
3090         len = priv->ucode_code.len;
3091         IWL_DEBUG_INFO(priv,
3092                 "Copying (but not loading) uCode instr len %zd\n", len);
3093         memcpy(priv->ucode_code.v_addr, src, len);
3094         IWL_DEBUG_INFO(priv, "uCode instr buf vaddr = 0x%p, paddr = 0x%08x\n",
3095                 priv->ucode_code.v_addr, (u32)priv->ucode_code.p_addr);
3096
3097         /* Runtime data (2nd block)
3098          * NOTE:  Copy into backup buffer will be done in iwl3945_up()  */
3099         src = &ucode->data[inst_size];
3100         len = priv->ucode_data.len;
3101         IWL_DEBUG_INFO(priv,
3102                 "Copying (but not loading) uCode data len %zd\n", len);
3103         memcpy(priv->ucode_data.v_addr, src, len);
3104         memcpy(priv->ucode_data_backup.v_addr, src, len);
3105
3106         /* Initialization instructions (3rd block) */
3107         if (init_size) {
3108                 src = &ucode->data[inst_size + data_size];
3109                 len = priv->ucode_init.len;
3110                 IWL_DEBUG_INFO(priv,
3111                         "Copying (but not loading) init instr len %zd\n", len);
3112                 memcpy(priv->ucode_init.v_addr, src, len);
3113         }
3114
3115         /* Initialization data (4th block) */
3116         if (init_data_size) {
3117                 src = &ucode->data[inst_size + data_size + init_size];
3118                 len = priv->ucode_init_data.len;
3119                 IWL_DEBUG_INFO(priv,
3120                         "Copying (but not loading) init data len %zd\n", len);
3121                 memcpy(priv->ucode_init_data.v_addr, src, len);
3122         }
3123
3124         /* Bootstrap instructions (5th block) */
3125         src = &ucode->data[inst_size + data_size + init_size + init_data_size];
3126         len = priv->ucode_boot.len;
3127         IWL_DEBUG_INFO(priv,
3128                 "Copying (but not loading) boot instr len %zd\n", len);
3129         memcpy(priv->ucode_boot.v_addr, src, len);
3130
3131         /* We have our copies now, allow OS release its copies */
3132         release_firmware(ucode_raw);
3133         return 0;
3134
3135  err_pci_alloc:
3136         IWL_ERR(priv, "failed to allocate pci memory\n");
3137         ret = -ENOMEM;
3138         iwl3945_dealloc_ucode_pci(priv);
3139
3140  err_release:
3141         release_firmware(ucode_raw);
3142
3143  error:
3144         return ret;
3145 }
3146
3147
3148 /**
3149  * iwl3945_set_ucode_ptrs - Set uCode address location
3150  *
3151  * Tell initialization uCode where to find runtime uCode.
3152  *
3153  * BSM registers initially contain pointers to initialization uCode.
3154  * We need to replace them to load runtime uCode inst and data,
3155  * and to save runtime data when powering down.
3156  */
3157 static int iwl3945_set_ucode_ptrs(struct iwl_priv *priv)
3158 {
3159         dma_addr_t pinst;
3160         dma_addr_t pdata;
3161         int rc = 0;
3162         unsigned long flags;
3163
3164         /* bits 31:0 for 3945 */
3165         pinst = priv->ucode_code.p_addr;
3166         pdata = priv->ucode_data_backup.p_addr;
3167
3168         spin_lock_irqsave(&priv->lock, flags);
3169         rc = iwl_grab_nic_access(priv);
3170         if (rc) {
3171                 spin_unlock_irqrestore(&priv->lock, flags);
3172                 return rc;
3173         }
3174
3175         /* Tell bootstrap uCode where to find image to load */
3176         iwl_write_prph(priv, BSM_DRAM_INST_PTR_REG, pinst);
3177         iwl_write_prph(priv, BSM_DRAM_DATA_PTR_REG, pdata);
3178         iwl_write_prph(priv, BSM_DRAM_DATA_BYTECOUNT_REG,
3179                                  priv->ucode_data.len);
3180
3181         /* Inst byte count must be last to set up, bit 31 signals uCode
3182          *   that all new ptr/size info is in place */
3183         iwl_write_prph(priv, BSM_DRAM_INST_BYTECOUNT_REG,
3184                                  priv->ucode_code.len | BSM_DRAM_INST_LOAD);
3185
3186         iwl_release_nic_access(priv);
3187
3188         spin_unlock_irqrestore(&priv->lock, flags);
3189
3190         IWL_DEBUG_INFO(priv, "Runtime uCode pointers are set.\n");
3191
3192         return rc;
3193 }
3194
3195 /**
3196  * iwl3945_init_alive_start - Called after REPLY_ALIVE notification received
3197  *
3198  * Called after REPLY_ALIVE notification received from "initialize" uCode.
3199  *
3200  * Tell "initialize" uCode to go ahead and load the runtime uCode.
3201  */
3202 static void iwl3945_init_alive_start(struct iwl_priv *priv)
3203 {
3204         /* Check alive response for "valid" sign from uCode */
3205         if (priv->card_alive_init.is_valid != UCODE_VALID_OK) {
3206                 /* We had an error bringing up the hardware, so take it
3207                  * all the way back down so we can try again */
3208                 IWL_DEBUG_INFO(priv, "Initialize Alive failed.\n");
3209                 goto restart;
3210         }
3211
3212         /* Bootstrap uCode has loaded initialize uCode ... verify inst image.
3213          * This is a paranoid check, because we would not have gotten the
3214          * "initialize" alive if code weren't properly loaded.  */
3215         if (iwl3945_verify_ucode(priv)) {
3216                 /* Runtime instruction load was bad;
3217                  * take it all the way back down so we can try again */
3218                 IWL_DEBUG_INFO(priv, "Bad \"initialize\" uCode load.\n");
3219                 goto restart;
3220         }
3221
3222         /* Send pointers to protocol/runtime uCode image ... init code will
3223          * load and launch runtime uCode, which will send us another "Alive"
3224          * notification. */
3225         IWL_DEBUG_INFO(priv, "Initialization Alive received.\n");
3226         if (iwl3945_set_ucode_ptrs(priv)) {
3227                 /* Runtime instruction load won't happen;
3228                  * take it all the way back down so we can try again */
3229                 IWL_DEBUG_INFO(priv, "Couldn't set up uCode pointers.\n");
3230                 goto restart;
3231         }
3232         return;
3233
3234  restart:
3235         queue_work(priv->workqueue, &priv->restart);
3236 }
3237
3238
3239 /* temporary */
3240 static int iwl3945_mac_beacon_update(struct ieee80211_hw *hw,
3241                                      struct sk_buff *skb);
3242
3243 /**
3244  * iwl3945_alive_start - called after REPLY_ALIVE notification received
3245  *                   from protocol/runtime uCode (initialization uCode's
3246  *                   Alive gets handled by iwl3945_init_alive_start()).
3247  */
3248 static void iwl3945_alive_start(struct iwl_priv *priv)
3249 {
3250         int rc = 0;
3251         int thermal_spin = 0;
3252         u32 rfkill;
3253
3254         IWL_DEBUG_INFO(priv, "Runtime Alive received.\n");
3255
3256         if (priv->card_alive.is_valid != UCODE_VALID_OK) {
3257                 /* We had an error bringing up the hardware, so take it
3258                  * all the way back down so we can try again */
3259                 IWL_DEBUG_INFO(priv, "Alive failed.\n");
3260                 goto restart;
3261         }
3262
3263         /* Initialize uCode has loaded Runtime uCode ... verify inst image.
3264          * This is a paranoid check, because we would not have gotten the
3265          * "runtime" alive if code weren't properly loaded.  */
3266         if (iwl3945_verify_ucode(priv)) {
3267                 /* Runtime instruction load was bad;
3268                  * take it all the way back down so we can try again */
3269                 IWL_DEBUG_INFO(priv, "Bad runtime uCode load.\n");
3270                 goto restart;
3271         }
3272
3273         iwl3945_clear_stations_table(priv);
3274
3275         rc = iwl_grab_nic_access(priv);
3276         if (rc) {
3277                 IWL_WARN(priv, "Can not read RFKILL status from adapter\n");
3278                 return;
3279         }
3280
3281         rfkill = iwl_read_prph(priv, APMG_RFKILL_REG);
3282         IWL_DEBUG_INFO(priv, "RFKILL status: 0x%x\n", rfkill);
3283         iwl_release_nic_access(priv);
3284
3285         if (rfkill & 0x1) {
3286                 clear_bit(STATUS_RF_KILL_HW, &priv->status);
3287                 /* if RFKILL is not on, then wait for thermal
3288                  * sensor in adapter to kick in */
3289                 while (iwl3945_hw_get_temperature(priv) == 0) {
3290                         thermal_spin++;
3291                         udelay(10);
3292                 }
3293
3294                 if (thermal_spin)
3295                         IWL_DEBUG_INFO(priv, "Thermal calibration took %dus\n",
3296                                        thermal_spin * 10);
3297         } else
3298                 set_bit(STATUS_RF_KILL_HW, &priv->status);
3299
3300         /* After the ALIVE response, we can send commands to 3945 uCode */
3301         set_bit(STATUS_ALIVE, &priv->status);
3302
3303         /* Clear out the uCode error bit if it is set */
3304         clear_bit(STATUS_FW_ERROR, &priv->status);
3305
3306         if (iwl_is_rfkill(priv))
3307                 return;
3308
3309         ieee80211_wake_queues(priv->hw);
3310
3311         priv->active_rate = priv->rates_mask;
3312         priv->active_rate_basic = priv->rates_mask & IWL_BASIC_RATES_MASK;
3313
3314         iwl_power_update_mode(priv, false);
3315
3316         if (iwl_is_associated(priv)) {
3317                 struct iwl3945_rxon_cmd *active_rxon =
3318                                 (struct iwl3945_rxon_cmd *)(&priv->active_rxon);
3319
3320                 memcpy(&priv->staging_rxon, &priv->active_rxon,
3321                        sizeof(priv->staging_rxon));
3322                 active_rxon->filter_flags &= ~RXON_FILTER_ASSOC_MSK;
3323         } else {
3324                 /* Initialize our rx_config data */
3325                 iwl_connection_init_rx_config(priv, priv->iw_mode);
3326         }
3327
3328         /* Configure Bluetooth device coexistence support */
3329         iwl_send_bt_config(priv);
3330
3331         /* Configure the adapter for unassociated operation */
3332         iwl3945_commit_rxon(priv);
3333
3334         iwl3945_reg_txpower_periodic(priv);
3335
3336         iwl3945_led_register(priv);
3337
3338         IWL_DEBUG_INFO(priv, "ALIVE processing complete.\n");
3339         set_bit(STATUS_READY, &priv->status);
3340         wake_up_interruptible(&priv->wait_command_queue);
3341
3342         if (priv->error_recovering)
3343                 iwl3945_error_recovery(priv);
3344
3345         /* reassociate for ADHOC mode */
3346         if (priv->vif && (priv->iw_mode == NL80211_IFTYPE_ADHOC)) {
3347                 struct sk_buff *beacon = ieee80211_beacon_get(priv->hw,
3348                                                                 priv->vif);
3349                 if (beacon)
3350                         iwl3945_mac_beacon_update(priv->hw, beacon);
3351         }
3352
3353         return;
3354
3355  restart:
3356         queue_work(priv->workqueue, &priv->restart);
3357 }
3358
3359 static void iwl3945_cancel_deferred_work(struct iwl_priv *priv);
3360
3361 static void __iwl3945_down(struct iwl_priv *priv)
3362 {
3363         unsigned long flags;
3364         int exit_pending = test_bit(STATUS_EXIT_PENDING, &priv->status);
3365         struct ieee80211_conf *conf = NULL;
3366
3367         IWL_DEBUG_INFO(priv, DRV_NAME " is going down\n");
3368
3369         conf = ieee80211_get_hw_conf(priv->hw);
3370
3371         if (!exit_pending)
3372                 set_bit(STATUS_EXIT_PENDING, &priv->status);
3373
3374         iwl3945_led_unregister(priv);
3375         iwl3945_clear_stations_table(priv);
3376
3377         /* Unblock any waiting calls */
3378         wake_up_interruptible_all(&priv->wait_command_queue);
3379
3380         /* Wipe out the EXIT_PENDING status bit if we are not actually
3381          * exiting the module */
3382         if (!exit_pending)
3383                 clear_bit(STATUS_EXIT_PENDING, &priv->status);
3384
3385         /* stop and reset the on-board processor */
3386         iwl_write32(priv, CSR_RESET, CSR_RESET_REG_FLAG_NEVO_RESET);
3387
3388         /* tell the device to stop sending interrupts */
3389         spin_lock_irqsave(&priv->lock, flags);
3390         iwl3945_disable_interrupts(priv);
3391         spin_unlock_irqrestore(&priv->lock, flags);
3392         iwl_synchronize_irq(priv);
3393
3394         if (priv->mac80211_registered)
3395                 ieee80211_stop_queues(priv->hw);
3396
3397         /* If we have not previously called iwl3945_init() then
3398          * clear all bits but the RF Kill and SUSPEND bits and return */
3399         if (!iwl_is_init(priv)) {
3400                 priv->status = test_bit(STATUS_RF_KILL_HW, &priv->status) <<
3401                                         STATUS_RF_KILL_HW |
3402                                test_bit(STATUS_RF_KILL_SW, &priv->status) <<
3403                                         STATUS_RF_KILL_SW |
3404                                test_bit(STATUS_GEO_CONFIGURED, &priv->status) <<
3405                                         STATUS_GEO_CONFIGURED |
3406                                test_bit(STATUS_IN_SUSPEND, &priv->status) <<
3407                                         STATUS_IN_SUSPEND |
3408                                 test_bit(STATUS_EXIT_PENDING, &priv->status) <<
3409                                         STATUS_EXIT_PENDING;
3410                 goto exit;
3411         }
3412
3413         /* ...otherwise clear out all the status bits but the RF Kill and
3414          * SUSPEND bits and continue taking the NIC down. */
3415         priv->status &= test_bit(STATUS_RF_KILL_HW, &priv->status) <<
3416                                 STATUS_RF_KILL_HW |
3417                         test_bit(STATUS_RF_KILL_SW, &priv->status) <<
3418                                 STATUS_RF_KILL_SW |
3419                         test_bit(STATUS_GEO_CONFIGURED, &priv->status) <<
3420                                 STATUS_GEO_CONFIGURED |
3421                         test_bit(STATUS_IN_SUSPEND, &priv->status) <<
3422                                 STATUS_IN_SUSPEND |
3423                         test_bit(STATUS_FW_ERROR, &priv->status) <<
3424                                 STATUS_FW_ERROR |
3425                         test_bit(STATUS_EXIT_PENDING, &priv->status) <<
3426                                 STATUS_EXIT_PENDING;
3427
3428         priv->cfg->ops->lib->apm_ops.reset(priv);
3429         spin_lock_irqsave(&priv->lock, flags);
3430         iwl_clear_bit(priv, CSR_GP_CNTRL, CSR_GP_CNTRL_REG_FLAG_MAC_ACCESS_REQ);
3431         spin_unlock_irqrestore(&priv->lock, flags);
3432
3433         iwl3945_hw_txq_ctx_stop(priv);
3434         iwl3945_hw_rxq_stop(priv);
3435
3436         spin_lock_irqsave(&priv->lock, flags);
3437         if (!iwl_grab_nic_access(priv)) {
3438                 iwl_write_prph(priv, APMG_CLK_DIS_REG,
3439                                          APMG_CLK_VAL_DMA_CLK_RQT);
3440                 iwl_release_nic_access(priv);
3441         }
3442         spin_unlock_irqrestore(&priv->lock, flags);
3443
3444         udelay(5);
3445
3446         if (exit_pending || test_bit(STATUS_IN_SUSPEND, &priv->status))
3447                 priv->cfg->ops->lib->apm_ops.stop(priv);
3448         else
3449                 priv->cfg->ops->lib->apm_ops.reset(priv);
3450
3451  exit:
3452         memset(&priv->card_alive, 0, sizeof(struct iwl_alive_resp));
3453
3454         if (priv->ibss_beacon)
3455                 dev_kfree_skb(priv->ibss_beacon);
3456         priv->ibss_beacon = NULL;
3457
3458         /* clear out any free frames */
3459         iwl3945_clear_free_frames(priv);
3460 }
3461
3462 static void iwl3945_down(struct iwl_priv *priv)
3463 {
3464         mutex_lock(&priv->mutex);
3465         __iwl3945_down(priv);
3466         mutex_unlock(&priv->mutex);
3467
3468         iwl3945_cancel_deferred_work(priv);
3469 }
3470
3471 #define MAX_HW_RESTARTS 5
3472
3473 static int __iwl3945_up(struct iwl_priv *priv)
3474 {
3475         int rc, i;
3476
3477         if (test_bit(STATUS_EXIT_PENDING, &priv->status)) {
3478                 IWL_WARN(priv, "Exit pending; will not bring the NIC up\n");
3479                 return -EIO;
3480         }
3481
3482         if (test_bit(STATUS_RF_KILL_SW, &priv->status)) {
3483                 IWL_WARN(priv, "Radio disabled by SW RF kill (module "
3484                             "parameter)\n");
3485                 return -ENODEV;
3486         }
3487
3488         if (!priv->ucode_data_backup.v_addr || !priv->ucode_data.v_addr) {
3489                 IWL_ERR(priv, "ucode not available for device bring up\n");
3490                 return -EIO;
3491         }
3492
3493         /* If platform's RF_KILL switch is NOT set to KILL */
3494         if (iwl_read32(priv, CSR_GP_CNTRL) &
3495                                 CSR_GP_CNTRL_REG_FLAG_HW_RF_KILL_SW)
3496                 clear_bit(STATUS_RF_KILL_HW, &priv->status);
3497         else {
3498                 set_bit(STATUS_RF_KILL_HW, &priv->status);
3499                 if (!test_bit(STATUS_IN_SUSPEND, &priv->status)) {
3500                         IWL_WARN(priv, "Radio disabled by HW RF Kill switch\n");
3501                         return -ENODEV;
3502                 }
3503         }
3504
3505         iwl_write32(priv, CSR_INT, 0xFFFFFFFF);
3506
3507         rc = iwl3945_hw_nic_init(priv);
3508         if (rc) {
3509                 IWL_ERR(priv, "Unable to int nic\n");
3510                 return rc;
3511         }
3512
3513         /* make sure rfkill handshake bits are cleared */
3514         iwl_write32(priv, CSR_UCODE_DRV_GP1_CLR, CSR_UCODE_SW_BIT_RFKILL);
3515         iwl_write32(priv, CSR_UCODE_DRV_GP1_CLR,
3516                     CSR_UCODE_DRV_GP1_BIT_CMD_BLOCKED);
3517
3518         /* clear (again), then enable host interrupts */
3519         iwl_write32(priv, CSR_INT, 0xFFFFFFFF);
3520         iwl3945_enable_interrupts(priv);
3521
3522         /* really make sure rfkill handshake bits are cleared */
3523         iwl_write32(priv, CSR_UCODE_DRV_GP1_CLR, CSR_UCODE_SW_BIT_RFKILL);
3524         iwl_write32(priv, CSR_UCODE_DRV_GP1_CLR, CSR_UCODE_SW_BIT_RFKILL);
3525
3526         /* Copy original ucode data image from disk into backup cache.
3527          * This will be used to initialize the on-board processor's
3528          * data SRAM for a clean start when the runtime program first loads. */
3529         memcpy(priv->ucode_data_backup.v_addr, priv->ucode_data.v_addr,
3530                priv->ucode_data.len);
3531
3532         /* We return success when we resume from suspend and rf_kill is on. */
3533         if (test_bit(STATUS_RF_KILL_HW, &priv->status))
3534                 return 0;
3535
3536         for (i = 0; i < MAX_HW_RESTARTS; i++) {
3537
3538                 iwl3945_clear_stations_table(priv);
3539
3540                 /* load bootstrap state machine,
3541                  * load bootstrap program into processor's memory,
3542                  * prepare to load the "initialize" uCode */
3543                 priv->cfg->ops->lib->load_ucode(priv);
3544
3545                 if (rc) {
3546                         IWL_ERR(priv,
3547                                 "Unable to set up bootstrap uCode: %d\n", rc);
3548                         continue;
3549                 }
3550
3551                 /* start card; "initialize" will load runtime ucode */
3552                 iwl3945_nic_start(priv);
3553
3554                 IWL_DEBUG_INFO(priv, DRV_NAME " is coming up\n");
3555
3556                 return 0;
3557         }
3558
3559         set_bit(STATUS_EXIT_PENDING, &priv->status);
3560         __iwl3945_down(priv);
3561         clear_bit(STATUS_EXIT_PENDING, &priv->status);
3562
3563         /* tried to restart and config the device for as long as our
3564          * patience could withstand */
3565         IWL_ERR(priv, "Unable to initialize device after %d attempts.\n", i);
3566         return -EIO;
3567 }
3568
3569
3570 /*****************************************************************************
3571  *
3572  * Workqueue callbacks
3573  *
3574  *****************************************************************************/
3575
3576 static void iwl3945_bg_init_alive_start(struct work_struct *data)
3577 {
3578         struct iwl_priv *priv =
3579             container_of(data, struct iwl_priv, init_alive_start.work);
3580
3581         if (test_bit(STATUS_EXIT_PENDING, &priv->status))
3582                 return;
3583
3584         mutex_lock(&priv->mutex);
3585         iwl3945_init_alive_start(priv);
3586         mutex_unlock(&priv->mutex);
3587 }
3588
3589 static void iwl3945_bg_alive_start(struct work_struct *data)
3590 {
3591         struct iwl_priv *priv =
3592             container_of(data, struct iwl_priv, alive_start.work);
3593
3594         if (test_bit(STATUS_EXIT_PENDING, &priv->status))
3595                 return;
3596
3597         mutex_lock(&priv->mutex);
3598         iwl3945_alive_start(priv);
3599         mutex_unlock(&priv->mutex);
3600 }
3601
3602 static void iwl3945_rfkill_poll(struct work_struct *data)
3603 {
3604         struct iwl_priv *priv =
3605             container_of(data, struct iwl_priv, rfkill_poll.work);
3606         unsigned long status = priv->status;
3607
3608         if (iwl_read32(priv, CSR_GP_CNTRL) & CSR_GP_CNTRL_REG_FLAG_HW_RF_KILL_SW)
3609                 clear_bit(STATUS_RF_KILL_HW, &priv->status);
3610         else
3611                 set_bit(STATUS_RF_KILL_HW, &priv->status);
3612
3613         if (test_bit(STATUS_RF_KILL_HW, &status) != test_bit(STATUS_RF_KILL_HW, &priv->status))
3614                 queue_work(priv->workqueue, &priv->rf_kill);
3615
3616         queue_delayed_work(priv->workqueue, &priv->rfkill_poll,
3617                            round_jiffies_relative(2 * HZ));
3618
3619 }
3620
3621 #define IWL_SCAN_CHECK_WATCHDOG (7 * HZ)
3622 static void iwl3945_bg_request_scan(struct work_struct *data)
3623 {
3624         struct iwl_priv *priv =
3625             container_of(data, struct iwl_priv, request_scan);
3626         struct iwl_host_cmd cmd = {
3627                 .id = REPLY_SCAN_CMD,
3628                 .len = sizeof(struct iwl3945_scan_cmd),
3629                 .meta.flags = CMD_SIZE_HUGE,
3630         };
3631         int rc = 0;
3632         struct iwl3945_scan_cmd *scan;
3633         struct ieee80211_conf *conf = NULL;
3634         u8 n_probes = 2;
3635         enum ieee80211_band band;
3636         DECLARE_SSID_BUF(ssid);
3637
3638         conf = ieee80211_get_hw_conf(priv->hw);
3639
3640         mutex_lock(&priv->mutex);
3641
3642         if (!iwl_is_ready(priv)) {
3643                 IWL_WARN(priv, "request scan called when driver not ready.\n");
3644                 goto done;
3645         }
3646
3647         /* Make sure the scan wasn't canceled before this queued work
3648          * was given the chance to run... */
3649         if (!test_bit(STATUS_SCANNING, &priv->status))
3650                 goto done;
3651
3652         /* This should never be called or scheduled if there is currently
3653          * a scan active in the hardware. */
3654         if (test_bit(STATUS_SCAN_HW, &priv->status)) {
3655                 IWL_DEBUG_INFO(priv, "Multiple concurrent scan requests  "
3656                                 "Ignoring second request.\n");
3657                 rc = -EIO;
3658                 goto done;
3659         }
3660
3661         if (test_bit(STATUS_EXIT_PENDING, &priv->status)) {
3662                 IWL_DEBUG_SCAN(priv, "Aborting scan due to device shutdown\n");
3663                 goto done;
3664         }
3665
3666         if (test_bit(STATUS_SCAN_ABORTING, &priv->status)) {
3667                 IWL_DEBUG_HC(priv,
3668                         "Scan request while abort pending. Queuing.\n");
3669                 goto done;
3670         }
3671
3672         if (iwl_is_rfkill(priv)) {
3673                 IWL_DEBUG_HC(priv, "Aborting scan due to RF Kill activation\n");
3674                 goto done;
3675         }
3676
3677         if (!test_bit(STATUS_READY, &priv->status)) {
3678                 IWL_DEBUG_HC(priv,
3679                         "Scan request while uninitialized. Queuing.\n");
3680                 goto done;
3681         }
3682
3683         if (!priv->scan_bands) {
3684                 IWL_DEBUG_HC(priv, "Aborting scan due to no requested bands\n");
3685                 goto done;
3686         }
3687
3688         if (!priv->scan) {
3689                 priv->scan = kmalloc(sizeof(struct iwl3945_scan_cmd) +
3690                                      IWL_MAX_SCAN_SIZE, GFP_KERNEL);
3691                 if (!priv->scan) {
3692                         rc = -ENOMEM;
3693                         goto done;
3694                 }
3695         }
3696         scan = priv->scan;
3697         memset(scan, 0, sizeof(struct iwl3945_scan_cmd) + IWL_MAX_SCAN_SIZE);
3698
3699         scan->quiet_plcp_th = IWL_PLCP_QUIET_THRESH;
3700         scan->quiet_time = IWL_ACTIVE_QUIET_TIME;
3701
3702         if (iwl_is_associated(priv)) {
3703                 u16 interval = 0;
3704                 u32 extra;
3705                 u32 suspend_time = 100;
3706                 u32 scan_suspend_time = 100;
3707                 unsigned long flags;
3708
3709                 IWL_DEBUG_INFO(priv, "Scanning while associated...\n");
3710
3711                 spin_lock_irqsave(&priv->lock, flags);
3712                 interval = priv->beacon_int;
3713                 spin_unlock_irqrestore(&priv->lock, flags);
3714
3715                 scan->suspend_time = 0;
3716                 scan->max_out_time = cpu_to_le32(200 * 1024);
3717                 if (!interval)
3718                         interval = suspend_time;
3719                 /*
3720                  * suspend time format:
3721                  *  0-19: beacon interval in usec (time before exec.)
3722                  * 20-23: 0
3723                  * 24-31: number of beacons (suspend between channels)
3724                  */
3725
3726                 extra = (suspend_time / interval) << 24;
3727                 scan_suspend_time = 0xFF0FFFFF &
3728                     (extra | ((suspend_time % interval) * 1024));
3729
3730                 scan->suspend_time = cpu_to_le32(scan_suspend_time);
3731                 IWL_DEBUG_SCAN(priv, "suspend_time 0x%X beacon interval %d\n",
3732                                scan_suspend_time, interval);
3733         }
3734
3735         /* We should add the ability for user to lock to PASSIVE ONLY */
3736         if (priv->one_direct_scan) {
3737                 IWL_DEBUG_SCAN(priv, "Kicking off one direct scan for '%s'\n",
3738                                 print_ssid(ssid, priv->direct_ssid,
3739                                 priv->direct_ssid_len));
3740                 scan->direct_scan[0].id = WLAN_EID_SSID;
3741                 scan->direct_scan[0].len = priv->direct_ssid_len;
3742                 memcpy(scan->direct_scan[0].ssid,
3743                        priv->direct_ssid, priv->direct_ssid_len);
3744                 n_probes++;
3745         } else
3746                 IWL_DEBUG_SCAN(priv, "Kicking off one indirect scan.\n");
3747
3748         /* We don't build a direct scan probe request; the uCode will do
3749          * that based on the direct_mask added to each channel entry */
3750         scan->tx_cmd.tx_flags = TX_CMD_FLG_SEQ_CTL_MSK;
3751         scan->tx_cmd.sta_id = priv->hw_params.bcast_sta_id;
3752         scan->tx_cmd.stop_time.life_time = TX_CMD_LIFE_TIME_INFINITE;
3753
3754         /* flags + rate selection */
3755
3756         if (priv->scan_bands & BIT(IEEE80211_BAND_2GHZ)) {
3757                 scan->flags = RXON_FLG_BAND_24G_MSK | RXON_FLG_AUTO_DETECT_MSK;
3758                 scan->tx_cmd.rate = IWL_RATE_1M_PLCP;
3759                 scan->good_CRC_th = 0;
3760                 band = IEEE80211_BAND_2GHZ;
3761         } else if (priv->scan_bands & BIT(IEEE80211_BAND_5GHZ)) {
3762                 scan->tx_cmd.rate = IWL_RATE_6M_PLCP;
3763                 scan->good_CRC_th = IWL_GOOD_CRC_TH;
3764                 band = IEEE80211_BAND_5GHZ;
3765         } else {
3766                 IWL_WARN(priv, "Invalid scan band count\n");
3767                 goto done;
3768         }
3769
3770         scan->tx_cmd.len = cpu_to_le16(
3771                 iwl_fill_probe_req(priv, band,
3772                                    (struct ieee80211_mgmt *)scan->data,
3773                                    IWL_MAX_SCAN_SIZE - sizeof(*scan)));
3774
3775         /* select Rx antennas */
3776         scan->flags |= iwl3945_get_antenna_flags(priv);
3777
3778         if (priv->iw_mode == NL80211_IFTYPE_MONITOR)
3779                 scan->filter_flags = RXON_FILTER_PROMISC_MSK;
3780
3781         scan->channel_count =
3782                 iwl3945_get_channels_for_scan(priv, band, 1, /* active */
3783                                               n_probes,
3784                         (void *)&scan->data[le16_to_cpu(scan->tx_cmd.len)]);
3785
3786         if (scan->channel_count == 0) {
3787                 IWL_DEBUG_SCAN(priv, "channel count %d\n", scan->channel_count);
3788                 goto done;
3789         }
3790
3791         cmd.len += le16_to_cpu(scan->tx_cmd.len) +
3792             scan->channel_count * sizeof(struct iwl3945_scan_channel);
3793         cmd.data = scan;
3794         scan->len = cpu_to_le16(cmd.len);
3795
3796         set_bit(STATUS_SCAN_HW, &priv->status);
3797         rc = iwl_send_cmd_sync(priv, &cmd);
3798         if (rc)
3799                 goto done;
3800
3801         queue_delayed_work(priv->workqueue, &priv->scan_check,
3802                            IWL_SCAN_CHECK_WATCHDOG);
3803
3804         mutex_unlock(&priv->mutex);
3805         return;
3806
3807  done:
3808         /* can not perform scan make sure we clear scanning
3809          * bits from status so next scan request can be performed.
3810          * if we dont clear scanning status bit here all next scan
3811          * will fail
3812         */
3813         clear_bit(STATUS_SCAN_HW, &priv->status);
3814         clear_bit(STATUS_SCANNING, &priv->status);
3815
3816         /* inform mac80211 scan aborted */
3817         queue_work(priv->workqueue, &priv->scan_completed);
3818         mutex_unlock(&priv->mutex);
3819 }
3820
3821 static void iwl3945_bg_up(struct work_struct *data)
3822 {
3823         struct iwl_priv *priv = container_of(data, struct iwl_priv, up);
3824
3825         if (test_bit(STATUS_EXIT_PENDING, &priv->status))
3826                 return;
3827
3828         mutex_lock(&priv->mutex);
3829         __iwl3945_up(priv);
3830         mutex_unlock(&priv->mutex);
3831         iwl_rfkill_set_hw_state(priv);
3832 }
3833
3834 static void iwl3945_bg_restart(struct work_struct *data)
3835 {
3836         struct iwl_priv *priv = container_of(data, struct iwl_priv, restart);
3837
3838         if (test_bit(STATUS_EXIT_PENDING, &priv->status))
3839                 return;
3840
3841         iwl3945_down(priv);
3842         queue_work(priv->workqueue, &priv->up);
3843 }
3844
3845 static void iwl3945_bg_rx_replenish(struct work_struct *data)
3846 {
3847         struct iwl_priv *priv =
3848             container_of(data, struct iwl_priv, rx_replenish);
3849
3850         if (test_bit(STATUS_EXIT_PENDING, &priv->status))
3851                 return;
3852
3853         mutex_lock(&priv->mutex);
3854         iwl3945_rx_replenish(priv);
3855         mutex_unlock(&priv->mutex);
3856 }
3857
3858 #define IWL_DELAY_NEXT_SCAN (HZ*2)
3859
3860 static void iwl3945_post_associate(struct iwl_priv *priv)
3861 {
3862         int rc = 0;
3863         struct ieee80211_conf *conf = NULL;
3864
3865         if (priv->iw_mode == NL80211_IFTYPE_AP) {
3866                 IWL_ERR(priv, "%s Should not be called in AP mode\n", __func__);
3867                 return;
3868         }
3869
3870
3871         IWL_DEBUG_ASSOC(priv, "Associated as %d to: %pM\n",
3872                         priv->assoc_id, priv->active_rxon.bssid_addr);
3873
3874         if (test_bit(STATUS_EXIT_PENDING, &priv->status))
3875                 return;
3876
3877         if (!priv->vif || !priv->is_open)
3878                 return;
3879
3880         iwl_scan_cancel_timeout(priv, 200);
3881
3882         conf = ieee80211_get_hw_conf(priv->hw);
3883
3884         priv->staging_rxon.filter_flags &= ~RXON_FILTER_ASSOC_MSK;
3885         iwl3945_commit_rxon(priv);
3886
3887         memset(&priv->rxon_timing, 0, sizeof(struct iwl_rxon_time_cmd));
3888         iwl3945_setup_rxon_timing(priv);
3889         rc = iwl_send_cmd_pdu(priv, REPLY_RXON_TIMING,
3890                               sizeof(priv->rxon_timing), &priv->rxon_timing);
3891         if (rc)
3892                 IWL_WARN(priv, "REPLY_RXON_TIMING failed - "
3893                             "Attempting to continue.\n");
3894
3895         priv->staging_rxon.filter_flags |= RXON_FILTER_ASSOC_MSK;
3896
3897         priv->staging_rxon.assoc_id = cpu_to_le16(priv->assoc_id);
3898
3899         IWL_DEBUG_ASSOC(priv, "assoc id %d beacon interval %d\n",
3900                         priv->assoc_id, priv->beacon_int);
3901
3902         if (priv->assoc_capability & WLAN_CAPABILITY_SHORT_PREAMBLE)
3903                 priv->staging_rxon.flags |= RXON_FLG_SHORT_PREAMBLE_MSK;
3904         else
3905                 priv->staging_rxon.flags &= ~RXON_FLG_SHORT_PREAMBLE_MSK;
3906
3907         if (priv->staging_rxon.flags & RXON_FLG_BAND_24G_MSK) {
3908                 if (priv->assoc_capability & WLAN_CAPABILITY_SHORT_SLOT_TIME)
3909                         priv->staging_rxon.flags |= RXON_FLG_SHORT_SLOT_MSK;
3910                 else
3911                         priv->staging_rxon.flags &= ~RXON_FLG_SHORT_SLOT_MSK;
3912
3913                 if (priv->iw_mode == NL80211_IFTYPE_ADHOC)
3914                         priv->staging_rxon.flags &= ~RXON_FLG_SHORT_SLOT_MSK;
3915
3916         }
3917
3918         iwl3945_commit_rxon(priv);
3919
3920         switch (priv->iw_mode) {
3921         case NL80211_IFTYPE_STATION:
3922                 iwl3945_rate_scale_init(priv->hw, IWL_AP_ID);
3923                 break;
3924
3925         case NL80211_IFTYPE_ADHOC:
3926
3927                 priv->assoc_id = 1;
3928                 iwl3945_add_station(priv, priv->bssid, 0, 0);
3929                 iwl3945_sync_sta(priv, IWL_STA_ID,
3930                                  (priv->band == IEEE80211_BAND_5GHZ) ?
3931                                  IWL_RATE_6M_PLCP : IWL_RATE_1M_PLCP,
3932                                  CMD_ASYNC);
3933                 iwl3945_rate_scale_init(priv->hw, IWL_STA_ID);
3934                 iwl3945_send_beacon_cmd(priv);
3935
3936                 break;
3937
3938         default:
3939                  IWL_ERR(priv, "%s Should not be called in %d mode\n",
3940                            __func__, priv->iw_mode);
3941                 break;
3942         }
3943
3944         iwl3945_activate_qos(priv, 0);
3945
3946         /* we have just associated, don't start scan too early */
3947         priv->next_scan_jiffies = jiffies + IWL_DELAY_NEXT_SCAN;
3948 }
3949
3950 static int iwl3945_mac_config(struct ieee80211_hw *hw, u32 changed);
3951
3952 /*****************************************************************************
3953  *
3954  * mac80211 entry point functions
3955  *
3956  *****************************************************************************/
3957
3958 #define UCODE_READY_TIMEOUT     (2 * HZ)
3959
3960 static int iwl3945_mac_start(struct ieee80211_hw *hw)
3961 {
3962         struct iwl_priv *priv = hw->priv;
3963         int ret;
3964
3965         IWL_DEBUG_MAC80211(priv, "enter\n");
3966
3967         /* we should be verifying the device is ready to be opened */
3968         mutex_lock(&priv->mutex);
3969
3970         memset(&priv->staging_rxon, 0, sizeof(priv->staging_rxon));
3971         /* fetch ucode file from disk, alloc and copy to bus-master buffers ...
3972          * ucode filename and max sizes are card-specific. */
3973
3974         if (!priv->ucode_code.len) {
3975                 ret = iwl3945_read_ucode(priv);
3976                 if (ret) {
3977                         IWL_ERR(priv, "Could not read microcode: %d\n", ret);
3978                         mutex_unlock(&priv->mutex);
3979                         goto out_release_irq;
3980                 }
3981         }
3982
3983         ret = __iwl3945_up(priv);
3984
3985         mutex_unlock(&priv->mutex);
3986
3987         iwl_rfkill_set_hw_state(priv);
3988
3989         if (ret)
3990                 goto out_release_irq;
3991
3992         IWL_DEBUG_INFO(priv, "Start UP work.\n");
3993
3994         if (test_bit(STATUS_IN_SUSPEND, &priv->status))
3995                 return 0;
3996
3997         /* Wait for START_ALIVE from ucode. Otherwise callbacks from
3998          * mac80211 will not be run successfully. */
3999         ret = wait_event_interruptible_timeout(priv->wait_command_queue,
4000                         test_bit(STATUS_READY, &priv->status),
4001                         UCODE_READY_TIMEOUT);
4002         if (!ret) {
4003                 if (!test_bit(STATUS_READY, &priv->status)) {
4004                         IWL_ERR(priv,
4005                                 "Wait for START_ALIVE timeout after %dms.\n",
4006                                 jiffies_to_msecs(UCODE_READY_TIMEOUT));
4007                         ret = -ETIMEDOUT;
4008                         goto out_release_irq;
4009                 }
4010         }
4011
4012         /* ucode is running and will send rfkill notifications,
4013          * no need to poll the killswitch state anymore */
4014         cancel_delayed_work(&priv->rfkill_poll);
4015
4016         priv->is_open = 1;
4017         IWL_DEBUG_MAC80211(priv, "leave\n");
4018         return 0;
4019
4020 out_release_irq:
4021         priv->is_open = 0;
4022         IWL_DEBUG_MAC80211(priv, "leave - failed\n");
4023         return ret;
4024 }
4025
4026 static void iwl3945_mac_stop(struct ieee80211_hw *hw)
4027 {
4028         struct iwl_priv *priv = hw->priv;
4029
4030         IWL_DEBUG_MAC80211(priv, "enter\n");
4031
4032         if (!priv->is_open) {
4033                 IWL_DEBUG_MAC80211(priv, "leave - skip\n");
4034                 return;
4035         }
4036
4037         priv->is_open = 0;
4038
4039         if (iwl_is_ready_rf(priv)) {
4040                 /* stop mac, cancel any scan request and clear
4041                  * RXON_FILTER_ASSOC_MSK BIT
4042                  */
4043                 mutex_lock(&priv->mutex);
4044                 iwl_scan_cancel_timeout(priv, 100);
4045                 mutex_unlock(&priv->mutex);
4046         }
4047
4048         iwl3945_down(priv);
4049
4050         flush_workqueue(priv->workqueue);
4051
4052         /* start polling the killswitch state again */
4053         queue_delayed_work(priv->workqueue, &priv->rfkill_poll,
4054                            round_jiffies_relative(2 * HZ));
4055
4056         IWL_DEBUG_MAC80211(priv, "leave\n");
4057 }
4058
4059 static int iwl3945_mac_tx(struct ieee80211_hw *hw, struct sk_buff *skb)
4060 {
4061         struct iwl_priv *priv = hw->priv;
4062
4063         IWL_DEBUG_MAC80211(priv, "enter\n");
4064
4065         IWL_DEBUG_TX(priv, "dev->xmit(%d bytes) at rate 0x%02x\n", skb->len,
4066                      ieee80211_get_tx_rate(hw, IEEE80211_SKB_CB(skb))->bitrate);
4067
4068         if (iwl3945_tx_skb(priv, skb))
4069                 dev_kfree_skb_any(skb);
4070
4071         IWL_DEBUG_MAC80211(priv, "leave\n");
4072         return NETDEV_TX_OK;
4073 }
4074
4075 static int iwl3945_mac_add_interface(struct ieee80211_hw *hw,
4076                                  struct ieee80211_if_init_conf *conf)
4077 {
4078         struct iwl_priv *priv = hw->priv;
4079         unsigned long flags;
4080
4081         IWL_DEBUG_MAC80211(priv, "enter: type %d\n", conf->type);
4082
4083         if (priv->vif) {
4084                 IWL_DEBUG_MAC80211(priv, "leave - vif != NULL\n");
4085                 return -EOPNOTSUPP;
4086         }
4087
4088         spin_lock_irqsave(&priv->lock, flags);
4089         priv->vif = conf->vif;
4090         priv->iw_mode = conf->type;
4091
4092         spin_unlock_irqrestore(&priv->lock, flags);
4093
4094         mutex_lock(&priv->mutex);
4095
4096         if (conf->mac_addr) {
4097                 IWL_DEBUG_MAC80211(priv, "Set: %pM\n", conf->mac_addr);
4098                 memcpy(priv->mac_addr, conf->mac_addr, ETH_ALEN);
4099         }
4100
4101         if (iwl_is_ready(priv))
4102                 iwl3945_set_mode(priv, conf->type);
4103
4104         mutex_unlock(&priv->mutex);
4105
4106         IWL_DEBUG_MAC80211(priv, "leave\n");
4107         return 0;
4108 }
4109
4110 /**
4111  * iwl3945_mac_config - mac80211 config callback
4112  *
4113  * We ignore conf->flags & IEEE80211_CONF_SHORT_SLOT_TIME since it seems to
4114  * be set inappropriately and the driver currently sets the hardware up to
4115  * use it whenever needed.
4116  */
4117 static int iwl3945_mac_config(struct ieee80211_hw *hw, u32 changed)
4118 {
4119         struct iwl_priv *priv = hw->priv;
4120         const struct iwl_channel_info *ch_info;
4121         struct ieee80211_conf *conf = &hw->conf;
4122         unsigned long flags;
4123         int ret = 0;
4124
4125         mutex_lock(&priv->mutex);
4126         IWL_DEBUG_MAC80211(priv, "enter to channel %d\n",
4127                                 conf->channel->hw_value);
4128
4129         if (!iwl_is_ready(priv)) {
4130                 IWL_DEBUG_MAC80211(priv, "leave - not ready\n");
4131                 ret = -EIO;
4132                 goto out;
4133         }
4134
4135         if (unlikely(!iwl3945_mod_params.disable_hw_scan &&
4136                      test_bit(STATUS_SCANNING, &priv->status))) {
4137                 IWL_DEBUG_MAC80211(priv, "leave - scanning\n");
4138                 set_bit(STATUS_CONF_PENDING, &priv->status);
4139                 mutex_unlock(&priv->mutex);
4140                 return 0;
4141         }
4142
4143         spin_lock_irqsave(&priv->lock, flags);
4144
4145         ch_info = iwl_get_channel_info(priv, conf->channel->band,
4146                                        conf->channel->hw_value);
4147         if (!is_channel_valid(ch_info)) {
4148                 IWL_DEBUG_SCAN(priv,
4149                                 "Channel %d [%d] is INVALID for this band.\n",
4150                                 conf->channel->hw_value, conf->channel->band);
4151                 IWL_DEBUG_MAC80211(priv, "leave - invalid channel\n");
4152                 spin_unlock_irqrestore(&priv->lock, flags);
4153                 ret = -EINVAL;
4154                 goto out;
4155         }
4156
4157         iwl_set_rxon_channel(priv, conf->channel);
4158
4159         iwl_set_flags_for_band(priv, conf->channel->band);
4160
4161         /* The list of supported rates and rate mask can be different
4162          * for each phymode; since the phymode may have changed, reset
4163          * the rate mask to what mac80211 lists */
4164         iwl_set_rate(priv);
4165
4166         spin_unlock_irqrestore(&priv->lock, flags);
4167
4168 #ifdef IEEE80211_CONF_CHANNEL_SWITCH
4169         if (conf->flags & IEEE80211_CONF_CHANNEL_SWITCH) {
4170                 iwl3945_hw_channel_switch(priv, conf->channel);
4171                 goto out;
4172         }
4173 #endif
4174
4175         iwl3945_radio_kill_sw(priv, !conf->radio_enabled);
4176
4177         if (!conf->radio_enabled) {
4178                 IWL_DEBUG_MAC80211(priv, "leave - radio disabled\n");
4179                 goto out;
4180         }
4181
4182         if (iwl_is_rfkill(priv)) {
4183                 IWL_DEBUG_MAC80211(priv, "leave - RF kill\n");
4184                 ret = -EIO;
4185                 goto out;
4186         }
4187
4188         iwl_set_rate(priv);
4189
4190         if (memcmp(&priv->active_rxon,
4191                    &priv->staging_rxon, sizeof(priv->staging_rxon)))
4192                 iwl3945_commit_rxon(priv);
4193         else
4194                 IWL_DEBUG_INFO(priv, "Not re-sending same RXON configuration\n");
4195
4196         IWL_DEBUG_MAC80211(priv, "leave\n");
4197
4198 out:
4199         clear_bit(STATUS_CONF_PENDING, &priv->status);
4200         mutex_unlock(&priv->mutex);
4201         return ret;
4202 }
4203
4204 static void iwl3945_config_ap(struct iwl_priv *priv)
4205 {
4206         int rc = 0;
4207
4208         if (test_bit(STATUS_EXIT_PENDING, &priv->status))
4209                 return;
4210
4211         /* The following should be done only at AP bring up */
4212         if (!(iwl_is_associated(priv))) {
4213
4214                 /* RXON - unassoc (to set timing command) */
4215                 priv->staging_rxon.filter_flags &= ~RXON_FILTER_ASSOC_MSK;
4216                 iwl3945_commit_rxon(priv);
4217
4218                 /* RXON Timing */
4219                 memset(&priv->rxon_timing, 0, sizeof(struct iwl_rxon_time_cmd));
4220                 iwl3945_setup_rxon_timing(priv);
4221                 rc = iwl_send_cmd_pdu(priv, REPLY_RXON_TIMING,
4222                                       sizeof(priv->rxon_timing),
4223                                       &priv->rxon_timing);
4224                 if (rc)
4225                         IWL_WARN(priv, "REPLY_RXON_TIMING failed - "
4226                                         "Attempting to continue.\n");
4227
4228                 /* FIXME: what should be the assoc_id for AP? */
4229                 priv->staging_rxon.assoc_id = cpu_to_le16(priv->assoc_id);
4230                 if (priv->assoc_capability & WLAN_CAPABILITY_SHORT_PREAMBLE)
4231                         priv->staging_rxon.flags |=
4232                                 RXON_FLG_SHORT_PREAMBLE_MSK;
4233                 else
4234                         priv->staging_rxon.flags &=
4235                                 ~RXON_FLG_SHORT_PREAMBLE_MSK;
4236
4237                 if (priv->staging_rxon.flags & RXON_FLG_BAND_24G_MSK) {
4238                         if (priv->assoc_capability &
4239                                 WLAN_CAPABILITY_SHORT_SLOT_TIME)
4240                                 priv->staging_rxon.flags |=
4241                                         RXON_FLG_SHORT_SLOT_MSK;
4242                         else
4243                                 priv->staging_rxon.flags &=
4244                                         ~RXON_FLG_SHORT_SLOT_MSK;
4245
4246                         if (priv->iw_mode == NL80211_IFTYPE_ADHOC)
4247                                 priv->staging_rxon.flags &=
4248                                         ~RXON_FLG_SHORT_SLOT_MSK;
4249                 }
4250                 /* restore RXON assoc */
4251                 priv->staging_rxon.filter_flags |= RXON_FILTER_ASSOC_MSK;
4252                 iwl3945_commit_rxon(priv);
4253                 iwl3945_add_station(priv, iwl_bcast_addr, 0, 0);
4254         }
4255         iwl3945_send_beacon_cmd(priv);
4256
4257         /* FIXME - we need to add code here to detect a totally new
4258          * configuration, reset the AP, unassoc, rxon timing, assoc,
4259          * clear sta table, add BCAST sta... */
4260 }
4261
4262 static int iwl3945_mac_config_interface(struct ieee80211_hw *hw,
4263                                         struct ieee80211_vif *vif,
4264                                         struct ieee80211_if_conf *conf)
4265 {
4266         struct iwl_priv *priv = hw->priv;
4267         int rc;
4268
4269         if (conf == NULL)
4270                 return -EIO;
4271
4272         if (priv->vif != vif) {
4273                 IWL_DEBUG_MAC80211(priv, "leave - priv->vif != vif\n");
4274                 return 0;
4275         }
4276
4277         /* handle this temporarily here */
4278         if (priv->iw_mode == NL80211_IFTYPE_ADHOC &&
4279             conf->changed & IEEE80211_IFCC_BEACON) {
4280                 struct sk_buff *beacon = ieee80211_beacon_get(hw, vif);
4281                 if (!beacon)
4282                         return -ENOMEM;
4283                 mutex_lock(&priv->mutex);
4284                 rc = iwl3945_mac_beacon_update(hw, beacon);
4285                 mutex_unlock(&priv->mutex);
4286                 if (rc)
4287                         return rc;
4288         }
4289
4290         if (!iwl_is_alive(priv))
4291                 return -EAGAIN;
4292
4293         mutex_lock(&priv->mutex);
4294
4295         if (conf->bssid)
4296                 IWL_DEBUG_MAC80211(priv, "bssid: %pM\n", conf->bssid);
4297
4298 /*
4299  * very dubious code was here; the probe filtering flag is never set:
4300  *
4301         if (unlikely(test_bit(STATUS_SCANNING, &priv->status)) &&
4302             !(priv->hw->flags & IEEE80211_HW_NO_PROBE_FILTERING)) {
4303  */
4304
4305         if (priv->iw_mode == NL80211_IFTYPE_AP) {
4306                 if (!conf->bssid) {
4307                         conf->bssid = priv->mac_addr;
4308                         memcpy(priv->bssid, priv->mac_addr, ETH_ALEN);
4309                         IWL_DEBUG_MAC80211(priv, "bssid was set to: %pM\n",
4310                                            conf->bssid);
4311                 }
4312                 if (priv->ibss_beacon)
4313                         dev_kfree_skb(priv->ibss_beacon);
4314
4315                 priv->ibss_beacon = ieee80211_beacon_get(hw, vif);
4316         }
4317
4318         if (iwl_is_rfkill(priv))
4319                 goto done;
4320
4321         if (conf->bssid && !is_zero_ether_addr(conf->bssid) &&
4322             !is_multicast_ether_addr(conf->bssid)) {
4323                 /* If there is currently a HW scan going on in the background
4324                  * then we need to cancel it else the RXON below will fail. */
4325                 if (iwl_scan_cancel_timeout(priv, 100)) {
4326                         IWL_WARN(priv, "Aborted scan still in progress "
4327                                     "after 100ms\n");
4328                         IWL_DEBUG_MAC80211(priv, "leaving:scan abort failed\n");
4329                         mutex_unlock(&priv->mutex);
4330                         return -EAGAIN;
4331                 }
4332                 memcpy(priv->staging_rxon.bssid_addr, conf->bssid, ETH_ALEN);
4333
4334                 /* TODO: Audit driver for usage of these members and see
4335                  * if mac80211 deprecates them (priv->bssid looks like it
4336                  * shouldn't be there, but I haven't scanned the IBSS code
4337                  * to verify) - jpk */
4338                 memcpy(priv->bssid, conf->bssid, ETH_ALEN);
4339
4340                 if (priv->iw_mode == NL80211_IFTYPE_AP)
4341                         iwl3945_config_ap(priv);
4342                 else {
4343                         rc = iwl3945_commit_rxon(priv);
4344                         if ((priv->iw_mode == NL80211_IFTYPE_STATION) && rc)
4345                                 iwl3945_add_station(priv,
4346                                         priv->active_rxon.bssid_addr, 1, 0);
4347                 }
4348
4349         } else {
4350                 iwl_scan_cancel_timeout(priv, 100);
4351                 priv->staging_rxon.filter_flags &= ~RXON_FILTER_ASSOC_MSK;
4352                 iwl3945_commit_rxon(priv);
4353         }
4354
4355  done:
4356         IWL_DEBUG_MAC80211(priv, "leave\n");
4357         mutex_unlock(&priv->mutex);
4358
4359         return 0;
4360 }
4361
4362 static void iwl3945_mac_remove_interface(struct ieee80211_hw *hw,
4363                                      struct ieee80211_if_init_conf *conf)
4364 {
4365         struct iwl_priv *priv = hw->priv;
4366
4367         IWL_DEBUG_MAC80211(priv, "enter\n");
4368
4369         mutex_lock(&priv->mutex);
4370
4371         if (iwl_is_ready_rf(priv)) {
4372                 iwl_scan_cancel_timeout(priv, 100);
4373                 priv->staging_rxon.filter_flags &= ~RXON_FILTER_ASSOC_MSK;
4374                 iwl3945_commit_rxon(priv);
4375         }
4376         if (priv->vif == conf->vif) {
4377                 priv->vif = NULL;
4378                 memset(priv->bssid, 0, ETH_ALEN);
4379         }
4380         mutex_unlock(&priv->mutex);
4381
4382         IWL_DEBUG_MAC80211(priv, "leave\n");
4383 }
4384
4385 #define IWL_DELAY_NEXT_SCAN_AFTER_ASSOC (HZ*6)
4386
4387 static void iwl3945_bss_info_changed(struct ieee80211_hw *hw,
4388                                      struct ieee80211_vif *vif,
4389                                      struct ieee80211_bss_conf *bss_conf,
4390                                      u32 changes)
4391 {
4392         struct iwl_priv *priv = hw->priv;
4393
4394         IWL_DEBUG_MAC80211(priv, "changes = 0x%X\n", changes);
4395
4396         if (changes & BSS_CHANGED_ERP_PREAMBLE) {
4397                 IWL_DEBUG_MAC80211(priv, "ERP_PREAMBLE %d\n",
4398                                    bss_conf->use_short_preamble);
4399                 if (bss_conf->use_short_preamble)
4400                         priv->staging_rxon.flags |= RXON_FLG_SHORT_PREAMBLE_MSK;
4401                 else
4402                         priv->staging_rxon.flags &=
4403                                 ~RXON_FLG_SHORT_PREAMBLE_MSK;
4404         }
4405
4406         if (changes & BSS_CHANGED_ERP_CTS_PROT) {
4407                 IWL_DEBUG_MAC80211(priv, "ERP_CTS %d\n",
4408                                    bss_conf->use_cts_prot);
4409                 if (bss_conf->use_cts_prot && (priv->band != IEEE80211_BAND_5GHZ))
4410                         priv->staging_rxon.flags |= RXON_FLG_TGG_PROTECT_MSK;
4411                 else
4412                         priv->staging_rxon.flags &= ~RXON_FLG_TGG_PROTECT_MSK;
4413         }
4414
4415         if (changes & BSS_CHANGED_ASSOC) {
4416                 IWL_DEBUG_MAC80211(priv, "ASSOC %d\n", bss_conf->assoc);
4417                 /* This should never happen as this function should
4418                  * never be called from interrupt context. */
4419                 if (WARN_ON_ONCE(in_interrupt()))
4420                         return;
4421                 if (bss_conf->assoc) {
4422                         priv->assoc_id = bss_conf->aid;
4423                         priv->beacon_int = bss_conf->beacon_int;
4424                         priv->timestamp = bss_conf->timestamp;
4425                         priv->assoc_capability = bss_conf->assoc_capability;
4426                         priv->power_data.dtim_period = bss_conf->dtim_period;
4427                         priv->next_scan_jiffies = jiffies +
4428                                         IWL_DELAY_NEXT_SCAN_AFTER_ASSOC;
4429                         mutex_lock(&priv->mutex);
4430                         iwl3945_post_associate(priv);
4431                         mutex_unlock(&priv->mutex);
4432                 } else {
4433                         priv->assoc_id = 0;
4434                         IWL_DEBUG_MAC80211(priv,
4435                                         "DISASSOC %d\n", bss_conf->assoc);
4436                 }
4437         } else if (changes && iwl_is_associated(priv) && priv->assoc_id) {
4438                         IWL_DEBUG_MAC80211(priv,
4439                                         "Associated Changes %d\n", changes);
4440                         iwl3945_send_rxon_assoc(priv);
4441         }
4442
4443 }
4444
4445 static int iwl3945_mac_hw_scan(struct ieee80211_hw *hw,
4446                                struct cfg80211_scan_request *req)
4447 {
4448         int rc = 0;
4449         unsigned long flags;
4450         struct iwl_priv *priv = hw->priv;
4451         size_t len = 0;
4452         u8 *ssid = NULL;
4453         DECLARE_SSID_BUF(ssid_buf);
4454
4455         IWL_DEBUG_MAC80211(priv, "enter\n");
4456
4457         if (req->n_ssids) {
4458                 ssid = req->ssids[0].ssid;
4459                 len = req->ssids[0].ssid_len;
4460         }
4461
4462         mutex_lock(&priv->mutex);
4463         spin_lock_irqsave(&priv->lock, flags);
4464
4465         if (!iwl_is_ready_rf(priv)) {
4466                 rc = -EIO;
4467                 IWL_DEBUG_MAC80211(priv, "leave - not ready or exit pending\n");
4468                 goto out_unlock;
4469         }
4470
4471         /* we don't schedule scan within next_scan_jiffies period */
4472         if (priv->next_scan_jiffies &&
4473                         time_after(priv->next_scan_jiffies, jiffies)) {
4474                 rc = -EAGAIN;
4475                 goto out_unlock;
4476         }
4477         /* if we just finished scan ask for delay for a broadcast scan */
4478         if ((len == 0) && priv->last_scan_jiffies &&
4479             time_after(priv->last_scan_jiffies + IWL_DELAY_NEXT_SCAN,
4480                        jiffies)) {
4481                 rc = -EAGAIN;
4482                 goto out_unlock;
4483         }
4484         if (len) {
4485                 IWL_DEBUG_SCAN(priv, "direct scan for %s [%zd]\n ",
4486                                print_ssid(ssid_buf, ssid, len), len);
4487
4488                 priv->one_direct_scan = 1;
4489                 priv->direct_ssid_len = len;
4490                 memcpy(priv->direct_ssid, ssid, len);
4491         } else
4492                 priv->one_direct_scan = 0;
4493
4494         rc = iwl3945_scan_initiate(priv);
4495
4496         IWL_DEBUG_MAC80211(priv, "leave\n");
4497
4498 out_unlock:
4499         spin_unlock_irqrestore(&priv->lock, flags);
4500         mutex_unlock(&priv->mutex);
4501
4502         return rc;
4503 }
4504
4505 static int iwl3945_mac_set_key(struct ieee80211_hw *hw, enum set_key_cmd cmd,
4506                                struct ieee80211_vif *vif,
4507                                struct ieee80211_sta *sta,
4508                                struct ieee80211_key_conf *key)
4509 {
4510         struct iwl_priv *priv = hw->priv;
4511         const u8 *addr;
4512         int ret;
4513         u8 sta_id;
4514
4515         IWL_DEBUG_MAC80211(priv, "enter\n");
4516
4517         if (iwl3945_mod_params.sw_crypto) {
4518                 IWL_DEBUG_MAC80211(priv, "leave - hwcrypto disabled\n");
4519                 return -EOPNOTSUPP;
4520         }
4521
4522         addr = sta ? sta->addr : iwl_bcast_addr;
4523         sta_id = iwl3945_hw_find_station(priv, addr);
4524         if (sta_id == IWL_INVALID_STATION) {
4525                 IWL_DEBUG_MAC80211(priv, "leave - %pM not in station map.\n",
4526                                    addr);
4527                 return -EINVAL;
4528         }
4529
4530         mutex_lock(&priv->mutex);
4531
4532         iwl_scan_cancel_timeout(priv, 100);
4533
4534         switch (cmd) {
4535         case  SET_KEY:
4536                 ret = iwl3945_update_sta_key_info(priv, key, sta_id);
4537                 if (!ret) {
4538                         iwl_set_rxon_hwcrypto(priv, 1);
4539                         iwl3945_commit_rxon(priv);
4540                         key->hw_key_idx = sta_id;
4541                         IWL_DEBUG_MAC80211(priv,
4542                                 "set_key success, using hwcrypto\n");
4543                         key->flags |= IEEE80211_KEY_FLAG_GENERATE_IV;
4544                 }
4545                 break;
4546         case DISABLE_KEY:
4547                 ret = iwl3945_clear_sta_key_info(priv, sta_id);
4548                 if (!ret) {
4549                         iwl_set_rxon_hwcrypto(priv, 0);
4550                         iwl3945_commit_rxon(priv);
4551                         IWL_DEBUG_MAC80211(priv, "disable hwcrypto key\n");
4552                 }
4553                 break;
4554         default:
4555                 ret = -EINVAL;
4556         }
4557
4558         IWL_DEBUG_MAC80211(priv, "leave\n");
4559         mutex_unlock(&priv->mutex);
4560
4561         return ret;
4562 }
4563
4564 static int iwl3945_mac_conf_tx(struct ieee80211_hw *hw, u16 queue,
4565                            const struct ieee80211_tx_queue_params *params)
4566 {
4567         struct iwl_priv *priv = hw->priv;
4568         unsigned long flags;
4569         int q;
4570
4571         IWL_DEBUG_MAC80211(priv, "enter\n");
4572
4573         if (!iwl_is_ready_rf(priv)) {
4574                 IWL_DEBUG_MAC80211(priv, "leave - RF not ready\n");
4575                 return -EIO;
4576         }
4577
4578         if (queue >= AC_NUM) {
4579                 IWL_DEBUG_MAC80211(priv, "leave - queue >= AC_NUM %d\n", queue);
4580                 return 0;
4581         }
4582
4583         q = AC_NUM - 1 - queue;
4584
4585         spin_lock_irqsave(&priv->lock, flags);
4586
4587         priv->qos_data.def_qos_parm.ac[q].cw_min = cpu_to_le16(params->cw_min);
4588         priv->qos_data.def_qos_parm.ac[q].cw_max = cpu_to_le16(params->cw_max);
4589         priv->qos_data.def_qos_parm.ac[q].aifsn = params->aifs;
4590         priv->qos_data.def_qos_parm.ac[q].edca_txop =
4591                         cpu_to_le16((params->txop * 32));
4592
4593         priv->qos_data.def_qos_parm.ac[q].reserved1 = 0;
4594         priv->qos_data.qos_active = 1;
4595
4596         spin_unlock_irqrestore(&priv->lock, flags);
4597
4598         mutex_lock(&priv->mutex);
4599         if (priv->iw_mode == NL80211_IFTYPE_AP)
4600                 iwl3945_activate_qos(priv, 1);
4601         else if (priv->assoc_id && iwl_is_associated(priv))
4602                 iwl3945_activate_qos(priv, 0);
4603
4604         mutex_unlock(&priv->mutex);
4605
4606         IWL_DEBUG_MAC80211(priv, "leave\n");
4607         return 0;
4608 }
4609
4610 static int iwl3945_mac_get_tx_stats(struct ieee80211_hw *hw,
4611                                 struct ieee80211_tx_queue_stats *stats)
4612 {
4613         struct iwl_priv *priv = hw->priv;
4614         int i, avail;
4615         struct iwl_tx_queue *txq;
4616         struct iwl_queue *q;
4617         unsigned long flags;
4618
4619         IWL_DEBUG_MAC80211(priv, "enter\n");
4620
4621         if (!iwl_is_ready_rf(priv)) {
4622                 IWL_DEBUG_MAC80211(priv, "leave - RF not ready\n");
4623                 return -EIO;
4624         }
4625
4626         spin_lock_irqsave(&priv->lock, flags);
4627
4628         for (i = 0; i < AC_NUM; i++) {
4629                 txq = &priv->txq[i];
4630                 q = &txq->q;
4631                 avail = iwl_queue_space(q);
4632
4633                 stats[i].len = q->n_window - avail;
4634                 stats[i].limit = q->n_window - q->high_mark;
4635                 stats[i].count = q->n_window;
4636
4637         }
4638         spin_unlock_irqrestore(&priv->lock, flags);
4639
4640         IWL_DEBUG_MAC80211(priv, "leave\n");
4641
4642         return 0;
4643 }
4644
4645 static void iwl3945_mac_reset_tsf(struct ieee80211_hw *hw)
4646 {
4647         struct iwl_priv *priv = hw->priv;
4648         unsigned long flags;
4649
4650         mutex_lock(&priv->mutex);
4651         IWL_DEBUG_MAC80211(priv, "enter\n");
4652
4653         iwl_reset_qos(priv);
4654
4655         spin_lock_irqsave(&priv->lock, flags);
4656         priv->assoc_id = 0;
4657         priv->assoc_capability = 0;
4658
4659         /* new association get rid of ibss beacon skb */
4660         if (priv->ibss_beacon)
4661                 dev_kfree_skb(priv->ibss_beacon);
4662
4663         priv->ibss_beacon = NULL;
4664
4665         priv->beacon_int = priv->hw->conf.beacon_int;
4666         priv->timestamp = 0;
4667         if ((priv->iw_mode == NL80211_IFTYPE_STATION))
4668                 priv->beacon_int = 0;
4669
4670         spin_unlock_irqrestore(&priv->lock, flags);
4671
4672         if (!iwl_is_ready_rf(priv)) {
4673                 IWL_DEBUG_MAC80211(priv, "leave - not ready\n");
4674                 mutex_unlock(&priv->mutex);
4675                 return;
4676         }
4677
4678         /* we are restarting association process
4679          * clear RXON_FILTER_ASSOC_MSK bit
4680         */
4681         if (priv->iw_mode != NL80211_IFTYPE_AP) {
4682                 iwl_scan_cancel_timeout(priv, 100);
4683                 priv->staging_rxon.filter_flags &= ~RXON_FILTER_ASSOC_MSK;
4684                 iwl3945_commit_rxon(priv);
4685         }
4686
4687         /* Per mac80211.h: This is only used in IBSS mode... */
4688         if (priv->iw_mode != NL80211_IFTYPE_ADHOC) {
4689
4690                 IWL_DEBUG_MAC80211(priv, "leave - not in IBSS\n");
4691                 mutex_unlock(&priv->mutex);
4692                 return;
4693         }
4694
4695         iwl_set_rate(priv);
4696
4697         mutex_unlock(&priv->mutex);
4698
4699         IWL_DEBUG_MAC80211(priv, "leave\n");
4700
4701 }
4702
4703 static int iwl3945_mac_beacon_update(struct ieee80211_hw *hw, struct sk_buff *skb)
4704 {
4705         struct iwl_priv *priv = hw->priv;
4706         unsigned long flags;
4707
4708         IWL_DEBUG_MAC80211(priv, "enter\n");
4709
4710         if (!iwl_is_ready_rf(priv)) {
4711                 IWL_DEBUG_MAC80211(priv, "leave - RF not ready\n");
4712                 return -EIO;
4713         }
4714
4715         if (priv->iw_mode != NL80211_IFTYPE_ADHOC) {
4716                 IWL_DEBUG_MAC80211(priv, "leave - not IBSS\n");
4717                 return -EIO;
4718         }
4719
4720         spin_lock_irqsave(&priv->lock, flags);
4721
4722         if (priv->ibss_beacon)
4723                 dev_kfree_skb(priv->ibss_beacon);
4724
4725         priv->ibss_beacon = skb;
4726
4727         priv->assoc_id = 0;
4728
4729         IWL_DEBUG_MAC80211(priv, "leave\n");
4730         spin_unlock_irqrestore(&priv->lock, flags);
4731
4732         iwl_reset_qos(priv);
4733
4734         iwl3945_post_associate(priv);
4735
4736
4737         return 0;
4738 }
4739
4740 /*****************************************************************************
4741  *
4742  * sysfs attributes
4743  *
4744  *****************************************************************************/
4745
4746 #ifdef CONFIG_IWLWIFI_DEBUG
4747
4748 /*
4749  * The following adds a new attribute to the sysfs representation
4750  * of this device driver (i.e. a new file in /sys/bus/pci/drivers/iwl/)
4751  * used for controlling the debug level.
4752  *
4753  * See the level definitions in iwl for details.
4754  */
4755 static ssize_t show_debug_level(struct device *d,
4756                                 struct device_attribute *attr, char *buf)
4757 {
4758         struct iwl_priv *priv = d->driver_data;
4759
4760         return sprintf(buf, "0x%08X\n", priv->debug_level);
4761 }
4762 static ssize_t store_debug_level(struct device *d,
4763                                 struct device_attribute *attr,
4764                                  const char *buf, size_t count)
4765 {
4766         struct iwl_priv *priv = d->driver_data;
4767         unsigned long val;
4768         int ret;
4769
4770         ret = strict_strtoul(buf, 0, &val);
4771         if (ret)
4772                 IWL_INFO(priv, "%s is not in hex or decimal form.\n", buf);
4773         else
4774                 priv->debug_level = val;
4775
4776         return strnlen(buf, count);
4777 }
4778
4779 static DEVICE_ATTR(debug_level, S_IWUSR | S_IRUGO,
4780                         show_debug_level, store_debug_level);
4781
4782 #endif /* CONFIG_IWLWIFI_DEBUG */
4783
4784 static ssize_t show_temperature(struct device *d,
4785                                 struct device_attribute *attr, char *buf)
4786 {
4787         struct iwl_priv *priv = (struct iwl_priv *)d->driver_data;
4788
4789         if (!iwl_is_alive(priv))
4790                 return -EAGAIN;
4791
4792         return sprintf(buf, "%d\n", iwl3945_hw_get_temperature(priv));
4793 }
4794
4795 static DEVICE_ATTR(temperature, S_IRUGO, show_temperature, NULL);
4796
4797 static ssize_t show_tx_power(struct device *d,
4798                              struct device_attribute *attr, char *buf)
4799 {
4800         struct iwl_priv *priv = (struct iwl_priv *)d->driver_data;
4801         return sprintf(buf, "%d\n", priv->tx_power_user_lmt);
4802 }
4803
4804 static ssize_t store_tx_power(struct device *d,
4805                               struct device_attribute *attr,
4806                               const char *buf, size_t count)
4807 {
4808         struct iwl_priv *priv = (struct iwl_priv *)d->driver_data;
4809         char *p = (char *)buf;
4810         u32 val;
4811
4812         val = simple_strtoul(p, &p, 10);
4813         if (p == buf)
4814                 IWL_INFO(priv, ": %s is not in decimal form.\n", buf);
4815         else
4816                 iwl3945_hw_reg_set_txpower(priv, val);
4817
4818         return count;
4819 }
4820
4821 static DEVICE_ATTR(tx_power, S_IWUSR | S_IRUGO, show_tx_power, store_tx_power);
4822
4823 static ssize_t show_flags(struct device *d,
4824                           struct device_attribute *attr, char *buf)
4825 {
4826         struct iwl_priv *priv = (struct iwl_priv *)d->driver_data;
4827
4828         return sprintf(buf, "0x%04X\n", priv->active_rxon.flags);
4829 }
4830
4831 static ssize_t store_flags(struct device *d,
4832                            struct device_attribute *attr,
4833                            const char *buf, size_t count)
4834 {
4835         struct iwl_priv *priv = (struct iwl_priv *)d->driver_data;
4836         u32 flags = simple_strtoul(buf, NULL, 0);
4837
4838         mutex_lock(&priv->mutex);
4839         if (le32_to_cpu(priv->staging_rxon.flags) != flags) {
4840                 /* Cancel any currently running scans... */
4841                 if (iwl_scan_cancel_timeout(priv, 100))
4842                         IWL_WARN(priv, "Could not cancel scan.\n");
4843                 else {
4844                         IWL_DEBUG_INFO(priv, "Committing rxon.flags = 0x%04X\n",
4845                                        flags);
4846                         priv->staging_rxon.flags = cpu_to_le32(flags);
4847                         iwl3945_commit_rxon(priv);
4848                 }
4849         }
4850         mutex_unlock(&priv->mutex);
4851
4852         return count;
4853 }
4854
4855 static DEVICE_ATTR(flags, S_IWUSR | S_IRUGO, show_flags, store_flags);
4856
4857 static ssize_t show_filter_flags(struct device *d,
4858                                  struct device_attribute *attr, char *buf)
4859 {
4860         struct iwl_priv *priv = (struct iwl_priv *)d->driver_data;
4861
4862         return sprintf(buf, "0x%04X\n",
4863                 le32_to_cpu(priv->active_rxon.filter_flags));
4864 }
4865
4866 static ssize_t store_filter_flags(struct device *d,
4867                                   struct device_attribute *attr,
4868                                   const char *buf, size_t count)
4869 {
4870         struct iwl_priv *priv = (struct iwl_priv *)d->driver_data;
4871         u32 filter_flags = simple_strtoul(buf, NULL, 0);
4872
4873         mutex_lock(&priv->mutex);
4874         if (le32_to_cpu(priv->staging_rxon.filter_flags) != filter_flags) {
4875                 /* Cancel any currently running scans... */
4876                 if (iwl_scan_cancel_timeout(priv, 100))
4877                         IWL_WARN(priv, "Could not cancel scan.\n");
4878                 else {
4879                         IWL_DEBUG_INFO(priv, "Committing rxon.filter_flags = "
4880                                        "0x%04X\n", filter_flags);
4881                         priv->staging_rxon.filter_flags =
4882                                 cpu_to_le32(filter_flags);
4883                         iwl3945_commit_rxon(priv);
4884                 }
4885         }
4886         mutex_unlock(&priv->mutex);
4887
4888         return count;
4889 }
4890
4891 static DEVICE_ATTR(filter_flags, S_IWUSR | S_IRUGO, show_filter_flags,
4892                    store_filter_flags);
4893
4894 #ifdef CONFIG_IWL3945_SPECTRUM_MEASUREMENT
4895
4896 static ssize_t show_measurement(struct device *d,
4897                                 struct device_attribute *attr, char *buf)
4898 {
4899         struct iwl_priv *priv = dev_get_drvdata(d);
4900         struct iwl_spectrum_notification measure_report;
4901         u32 size = sizeof(measure_report), len = 0, ofs = 0;
4902         u8 *data = (u8 *)&measure_report;
4903         unsigned long flags;
4904
4905         spin_lock_irqsave(&priv->lock, flags);
4906         if (!(priv->measurement_status & MEASUREMENT_READY)) {
4907                 spin_unlock_irqrestore(&priv->lock, flags);
4908                 return 0;
4909         }
4910         memcpy(&measure_report, &priv->measure_report, size);
4911         priv->measurement_status = 0;
4912         spin_unlock_irqrestore(&priv->lock, flags);
4913
4914         while (size && (PAGE_SIZE - len)) {
4915                 hex_dump_to_buffer(data + ofs, size, 16, 1, buf + len,
4916                                    PAGE_SIZE - len, 1);
4917                 len = strlen(buf);
4918                 if (PAGE_SIZE - len)
4919                         buf[len++] = '\n';
4920
4921                 ofs += 16;
4922                 size -= min(size, 16U);
4923         }
4924
4925         return len;
4926 }
4927
4928 static ssize_t store_measurement(struct device *d,
4929                                  struct device_attribute *attr,
4930                                  const char *buf, size_t count)
4931 {
4932         struct iwl_priv *priv = dev_get_drvdata(d);
4933         struct ieee80211_measurement_params params = {
4934                 .channel = le16_to_cpu(priv->active_rxon.channel),
4935                 .start_time = cpu_to_le64(priv->last_tsf),
4936                 .duration = cpu_to_le16(1),
4937         };
4938         u8 type = IWL_MEASURE_BASIC;
4939         u8 buffer[32];
4940         u8 channel;
4941
4942         if (count) {
4943                 char *p = buffer;
4944                 strncpy(buffer, buf, min(sizeof(buffer), count));
4945                 channel = simple_strtoul(p, NULL, 0);
4946                 if (channel)
4947                         params.channel = channel;
4948
4949                 p = buffer;
4950                 while (*p && *p != ' ')
4951                         p++;
4952                 if (*p)
4953                         type = simple_strtoul(p + 1, NULL, 0);
4954         }
4955
4956         IWL_DEBUG_INFO(priv, "Invoking measurement of type %d on "
4957                        "channel %d (for '%s')\n", type, params.channel, buf);
4958         iwl3945_get_measurement(priv, &params, type);
4959
4960         return count;
4961 }
4962
4963 static DEVICE_ATTR(measurement, S_IRUSR | S_IWUSR,
4964                    show_measurement, store_measurement);
4965 #endif /* CONFIG_IWL3945_SPECTRUM_MEASUREMENT */
4966
4967 static ssize_t store_retry_rate(struct device *d,
4968                                 struct device_attribute *attr,
4969                                 const char *buf, size_t count)
4970 {
4971         struct iwl_priv *priv = dev_get_drvdata(d);
4972
4973         priv->retry_rate = simple_strtoul(buf, NULL, 0);
4974         if (priv->retry_rate <= 0)
4975                 priv->retry_rate = 1;
4976
4977         return count;
4978 }
4979
4980 static ssize_t show_retry_rate(struct device *d,
4981                                struct device_attribute *attr, char *buf)
4982 {
4983         struct iwl_priv *priv = dev_get_drvdata(d);
4984         return sprintf(buf, "%d", priv->retry_rate);
4985 }
4986
4987 static DEVICE_ATTR(retry_rate, S_IWUSR | S_IRUSR, show_retry_rate,
4988                    store_retry_rate);
4989
4990
4991 static ssize_t store_power_level(struct device *d,
4992                                  struct device_attribute *attr,
4993                                  const char *buf, size_t count)
4994 {
4995         struct iwl_priv *priv = dev_get_drvdata(d);
4996         int ret;
4997         unsigned long mode;
4998
4999
5000         mutex_lock(&priv->mutex);
5001
5002         if (!iwl_is_ready(priv)) {
5003                 ret = -EAGAIN;
5004                 goto out;
5005         }
5006
5007         ret = strict_strtoul(buf, 10, &mode);
5008         if (ret)
5009                 goto out;
5010
5011         ret = iwl_power_set_user_mode(priv, mode);
5012         if (ret) {
5013                 IWL_DEBUG_MAC80211(priv, "failed setting power mode.\n");
5014                 goto out;
5015         }
5016         ret = count;
5017
5018  out:
5019         mutex_unlock(&priv->mutex);
5020         return ret;
5021 }
5022
5023 static ssize_t show_power_level(struct device *d,
5024                                 struct device_attribute *attr, char *buf)
5025 {
5026         struct iwl_priv *priv = dev_get_drvdata(d);
5027         int mode = priv->power_data.user_power_setting;
5028         int system = priv->power_data.system_power_setting;
5029         int level = priv->power_data.power_mode;
5030         char *p = buf;
5031
5032         switch (system) {
5033         case IWL_POWER_SYS_AUTO:
5034                 p += sprintf(p, "SYSTEM:auto");
5035                 break;
5036         case IWL_POWER_SYS_AC:
5037                 p += sprintf(p, "SYSTEM:ac");
5038                 break;
5039         case IWL_POWER_SYS_BATTERY:
5040                 p += sprintf(p, "SYSTEM:battery");
5041                 break;
5042         }
5043
5044         p += sprintf(p, "\tMODE:%s", (mode < IWL_POWER_AUTO) ?
5045                         "fixed" : "auto");
5046         p += sprintf(p, "\tINDEX:%d", level);
5047         p += sprintf(p, "\n");
5048         return p - buf + 1;
5049 }
5050
5051 static DEVICE_ATTR(power_level, S_IWUSR | S_IRUSR,
5052                    show_power_level, store_power_level);
5053
5054 #define MAX_WX_STRING 80
5055
5056 /* Values are in microsecond */
5057 static const s32 timeout_duration[] = {
5058         350000,
5059         250000,
5060         75000,
5061         37000,
5062         25000,
5063 };
5064 static const s32 period_duration[] = {
5065         400000,
5066         700000,
5067         1000000,
5068         1000000,
5069         1000000
5070 };
5071
5072 static ssize_t show_channels(struct device *d,
5073                              struct device_attribute *attr, char *buf)
5074 {
5075         /* all this shit doesn't belong into sysfs anyway */
5076         return 0;
5077 }
5078
5079 static DEVICE_ATTR(channels, S_IRUSR, show_channels, NULL);
5080
5081 static ssize_t show_statistics(struct device *d,
5082                                struct device_attribute *attr, char *buf)
5083 {
5084         struct iwl_priv *priv = dev_get_drvdata(d);
5085         u32 size = sizeof(struct iwl3945_notif_statistics);
5086         u32 len = 0, ofs = 0;
5087         u8 *data = (u8 *)&priv->statistics_39;
5088         int rc = 0;
5089
5090         if (!iwl_is_alive(priv))
5091                 return -EAGAIN;
5092
5093         mutex_lock(&priv->mutex);
5094         rc = iwl_send_statistics_request(priv, 0);
5095         mutex_unlock(&priv->mutex);
5096
5097         if (rc) {
5098                 len = sprintf(buf,
5099                               "Error sending statistics request: 0x%08X\n", rc);
5100                 return len;
5101         }
5102
5103         while (size && (PAGE_SIZE - len)) {
5104                 hex_dump_to_buffer(data + ofs, size, 16, 1, buf + len,
5105                                    PAGE_SIZE - len, 1);
5106                 len = strlen(buf);
5107                 if (PAGE_SIZE - len)
5108                         buf[len++] = '\n';
5109
5110                 ofs += 16;
5111                 size -= min(size, 16U);
5112         }
5113
5114         return len;
5115 }
5116
5117 static DEVICE_ATTR(statistics, S_IRUGO, show_statistics, NULL);
5118
5119 static ssize_t show_antenna(struct device *d,
5120                             struct device_attribute *attr, char *buf)
5121 {
5122         struct iwl_priv *priv = dev_get_drvdata(d);
5123
5124         if (!iwl_is_alive(priv))
5125                 return -EAGAIN;
5126
5127         return sprintf(buf, "%d\n", iwl3945_mod_params.antenna);
5128 }
5129
5130 static ssize_t store_antenna(struct device *d,
5131                              struct device_attribute *attr,
5132                              const char *buf, size_t count)
5133 {
5134         struct iwl_priv *priv __maybe_unused = dev_get_drvdata(d);
5135         int ant;
5136
5137         if (count == 0)
5138                 return 0;
5139
5140         if (sscanf(buf, "%1i", &ant) != 1) {
5141                 IWL_DEBUG_INFO(priv, "not in hex or decimal form.\n");
5142                 return count;
5143         }
5144
5145         if ((ant >= 0) && (ant <= 2)) {
5146                 IWL_DEBUG_INFO(priv, "Setting antenna select to %d.\n", ant);
5147                 iwl3945_mod_params.antenna = (enum iwl3945_antenna)ant;
5148         } else
5149                 IWL_DEBUG_INFO(priv, "Bad antenna select value %d.\n", ant);
5150
5151
5152         return count;
5153 }
5154
5155 static DEVICE_ATTR(antenna, S_IWUSR | S_IRUGO, show_antenna, store_antenna);
5156
5157 static ssize_t show_status(struct device *d,
5158                            struct device_attribute *attr, char *buf)
5159 {
5160         struct iwl_priv *priv = (struct iwl_priv *)d->driver_data;
5161         if (!iwl_is_alive(priv))
5162                 return -EAGAIN;
5163         return sprintf(buf, "0x%08x\n", (int)priv->status);
5164 }
5165
5166 static DEVICE_ATTR(status, S_IRUGO, show_status, NULL);
5167
5168 static ssize_t dump_error_log(struct device *d,
5169                               struct device_attribute *attr,
5170                               const char *buf, size_t count)
5171 {
5172         char *p = (char *)buf;
5173
5174         if (p[0] == '1')
5175                 iwl3945_dump_nic_error_log((struct iwl_priv *)d->driver_data);
5176
5177         return strnlen(buf, count);
5178 }
5179
5180 static DEVICE_ATTR(dump_errors, S_IWUSR, NULL, dump_error_log);
5181
5182 static ssize_t dump_event_log(struct device *d,
5183                               struct device_attribute *attr,
5184                               const char *buf, size_t count)
5185 {
5186         char *p = (char *)buf;
5187
5188         if (p[0] == '1')
5189                 iwl3945_dump_nic_event_log((struct iwl_priv *)d->driver_data);
5190
5191         return strnlen(buf, count);
5192 }
5193
5194 static DEVICE_ATTR(dump_events, S_IWUSR, NULL, dump_event_log);
5195
5196 /*****************************************************************************
5197  *
5198  * driver setup and tear down
5199  *
5200  *****************************************************************************/
5201
5202 static void iwl3945_setup_deferred_work(struct iwl_priv *priv)
5203 {
5204         priv->workqueue = create_workqueue(DRV_NAME);
5205
5206         init_waitqueue_head(&priv->wait_command_queue);
5207
5208         INIT_WORK(&priv->up, iwl3945_bg_up);
5209         INIT_WORK(&priv->restart, iwl3945_bg_restart);
5210         INIT_WORK(&priv->rx_replenish, iwl3945_bg_rx_replenish);
5211         INIT_WORK(&priv->rf_kill, iwl_bg_rf_kill);
5212         INIT_WORK(&priv->beacon_update, iwl3945_bg_beacon_update);
5213         INIT_DELAYED_WORK(&priv->init_alive_start, iwl3945_bg_init_alive_start);
5214         INIT_DELAYED_WORK(&priv->alive_start, iwl3945_bg_alive_start);
5215         INIT_DELAYED_WORK(&priv->rfkill_poll, iwl3945_rfkill_poll);
5216         INIT_WORK(&priv->scan_completed, iwl_bg_scan_completed);
5217         INIT_WORK(&priv->request_scan, iwl3945_bg_request_scan);
5218         INIT_WORK(&priv->abort_scan, iwl_bg_abort_scan);
5219         INIT_DELAYED_WORK(&priv->scan_check, iwl_bg_scan_check);
5220
5221         iwl3945_hw_setup_deferred_work(priv);
5222
5223         tasklet_init(&priv->irq_tasklet, (void (*)(unsigned long))
5224                      iwl3945_irq_tasklet, (unsigned long)priv);
5225 }
5226
5227 static void iwl3945_cancel_deferred_work(struct iwl_priv *priv)
5228 {
5229         iwl3945_hw_cancel_deferred_work(priv);
5230
5231         cancel_delayed_work_sync(&priv->init_alive_start);
5232         cancel_delayed_work(&priv->scan_check);
5233         cancel_delayed_work(&priv->alive_start);
5234         cancel_work_sync(&priv->beacon_update);
5235 }
5236
5237 static struct attribute *iwl3945_sysfs_entries[] = {
5238         &dev_attr_antenna.attr,
5239         &dev_attr_channels.attr,
5240         &dev_attr_dump_errors.attr,
5241         &dev_attr_dump_events.attr,
5242         &dev_attr_flags.attr,
5243         &dev_attr_filter_flags.attr,
5244 #ifdef CONFIG_IWL3945_SPECTRUM_MEASUREMENT
5245         &dev_attr_measurement.attr,
5246 #endif
5247         &dev_attr_power_level.attr,
5248         &dev_attr_retry_rate.attr,
5249         &dev_attr_statistics.attr,
5250         &dev_attr_status.attr,
5251         &dev_attr_temperature.attr,
5252         &dev_attr_tx_power.attr,
5253 #ifdef CONFIG_IWLWIFI_DEBUG
5254         &dev_attr_debug_level.attr,
5255 #endif
5256         NULL
5257 };
5258
5259 static struct attribute_group iwl3945_attribute_group = {
5260         .name = NULL,           /* put in device directory */
5261         .attrs = iwl3945_sysfs_entries,
5262 };
5263
5264 static struct ieee80211_ops iwl3945_hw_ops = {
5265         .tx = iwl3945_mac_tx,
5266         .start = iwl3945_mac_start,
5267         .stop = iwl3945_mac_stop,
5268         .add_interface = iwl3945_mac_add_interface,
5269         .remove_interface = iwl3945_mac_remove_interface,
5270         .config = iwl3945_mac_config,
5271         .config_interface = iwl3945_mac_config_interface,
5272         .configure_filter = iwl_configure_filter,
5273         .set_key = iwl3945_mac_set_key,
5274         .get_tx_stats = iwl3945_mac_get_tx_stats,
5275         .conf_tx = iwl3945_mac_conf_tx,
5276         .reset_tsf = iwl3945_mac_reset_tsf,
5277         .bss_info_changed = iwl3945_bss_info_changed,
5278         .hw_scan = iwl3945_mac_hw_scan
5279 };
5280
5281 static int iwl3945_init_drv(struct iwl_priv *priv)
5282 {
5283         int ret;
5284         struct iwl3945_eeprom *eeprom = (struct iwl3945_eeprom *)priv->eeprom;
5285
5286         priv->retry_rate = 1;
5287         priv->ibss_beacon = NULL;
5288
5289         spin_lock_init(&priv->lock);
5290         spin_lock_init(&priv->power_data.lock);
5291         spin_lock_init(&priv->sta_lock);
5292         spin_lock_init(&priv->hcmd_lock);
5293
5294         INIT_LIST_HEAD(&priv->free_frames);
5295
5296         mutex_init(&priv->mutex);
5297
5298         /* Clear the driver's (not device's) station table */
5299         iwl3945_clear_stations_table(priv);
5300
5301         priv->data_retry_limit = -1;
5302         priv->ieee_channels = NULL;
5303         priv->ieee_rates = NULL;
5304         priv->band = IEEE80211_BAND_2GHZ;
5305
5306         priv->iw_mode = NL80211_IFTYPE_STATION;
5307
5308         iwl_reset_qos(priv);
5309
5310         priv->qos_data.qos_active = 0;
5311         priv->qos_data.qos_cap.val = 0;
5312
5313         priv->rates_mask = IWL_RATES_MASK;
5314         /* If power management is turned on, default to CAM mode */
5315         priv->power_mode = IWL_POWER_MODE_CAM;
5316         priv->tx_power_user_lmt = IWL_DEFAULT_TX_POWER;
5317
5318         if (eeprom->version < EEPROM_3945_EEPROM_VERSION) {
5319                 IWL_WARN(priv, "Unsupported EEPROM version: 0x%04X\n",
5320                          eeprom->version);
5321                 ret = -EINVAL;
5322                 goto err;
5323         }
5324         ret = iwl_init_channel_map(priv);
5325         if (ret) {
5326                 IWL_ERR(priv, "initializing regulatory failed: %d\n", ret);
5327                 goto err;
5328         }
5329
5330         /* Set up txpower settings in driver for all channels */
5331         if (iwl3945_txpower_set_from_eeprom(priv)) {
5332                 ret = -EIO;
5333                 goto err_free_channel_map;
5334         }
5335
5336         ret = iwlcore_init_geos(priv);
5337         if (ret) {
5338                 IWL_ERR(priv, "initializing geos failed: %d\n", ret);
5339                 goto err_free_channel_map;
5340         }
5341         iwl3945_init_hw_rates(priv, priv->ieee_rates);
5342
5343         if (priv->bands[IEEE80211_BAND_2GHZ].n_channels)
5344                 priv->hw->wiphy->bands[IEEE80211_BAND_2GHZ] =
5345                         &priv->bands[IEEE80211_BAND_2GHZ];
5346         if (priv->bands[IEEE80211_BAND_5GHZ].n_channels)
5347                 priv->hw->wiphy->bands[IEEE80211_BAND_5GHZ] =
5348                         &priv->bands[IEEE80211_BAND_5GHZ];
5349
5350         return 0;
5351
5352 err_free_channel_map:
5353         iwl_free_channel_map(priv);
5354 err:
5355         return ret;
5356 }
5357
5358 static int iwl3945_pci_probe(struct pci_dev *pdev, const struct pci_device_id *ent)
5359 {
5360         int err = 0;
5361         struct iwl_priv *priv;
5362         struct ieee80211_hw *hw;
5363         struct iwl_cfg *cfg = (struct iwl_cfg *)(ent->driver_data);
5364         struct iwl3945_eeprom *eeprom;
5365         unsigned long flags;
5366
5367         /***********************
5368          * 1. Allocating HW data
5369          * ********************/
5370
5371         /* mac80211 allocates memory for this device instance, including
5372          *   space for this driver's private structure */
5373         hw = iwl_alloc_all(cfg, &iwl3945_hw_ops);
5374         if (hw == NULL) {
5375                 printk(KERN_ERR DRV_NAME "Can not allocate network device\n");
5376                 err = -ENOMEM;
5377                 goto out;
5378         }
5379         priv = hw->priv;
5380         SET_IEEE80211_DEV(hw, &pdev->dev);
5381
5382         if ((iwl3945_mod_params.num_of_queues > IWL39_MAX_NUM_QUEUES) ||
5383              (iwl3945_mod_params.num_of_queues < IWL_MIN_NUM_QUEUES)) {
5384                 IWL_ERR(priv,
5385                         "invalid queues_num, should be between %d and %d\n",
5386                         IWL_MIN_NUM_QUEUES, IWL39_MAX_NUM_QUEUES);
5387                 err = -EINVAL;
5388                 goto out;
5389         }
5390
5391         /*
5392          * Disabling hardware scan means that mac80211 will perform scans
5393          * "the hard way", rather than using device's scan.
5394          */
5395         if (iwl3945_mod_params.disable_hw_scan) {
5396                 IWL_DEBUG_INFO(priv, "Disabling hw_scan\n");
5397                 iwl3945_hw_ops.hw_scan = NULL;
5398         }
5399
5400
5401         IWL_DEBUG_INFO(priv, "*** LOAD DRIVER ***\n");
5402         priv->cfg = cfg;
5403         priv->pci_dev = pdev;
5404
5405 #ifdef CONFIG_IWLWIFI_DEBUG
5406         priv->debug_level = iwl3945_mod_params.debug;
5407         atomic_set(&priv->restrict_refcnt, 0);
5408 #endif
5409         hw->rate_control_algorithm = "iwl-3945-rs";
5410         hw->sta_data_size = sizeof(struct iwl3945_sta_priv);
5411
5412         /* Tell mac80211 our characteristics */
5413         hw->flags = IEEE80211_HW_SIGNAL_DBM |
5414                     IEEE80211_HW_NOISE_DBM;
5415
5416         hw->wiphy->interface_modes =
5417                 BIT(NL80211_IFTYPE_STATION) |
5418                 BIT(NL80211_IFTYPE_ADHOC);
5419
5420         hw->wiphy->custom_regulatory = true;
5421
5422         hw->wiphy->max_scan_ssids = 1;
5423
5424         /* 4 EDCA QOS priorities */
5425         hw->queues = 4;
5426
5427         /***************************
5428          * 2. Initializing PCI bus
5429          * *************************/
5430         if (pci_enable_device(pdev)) {
5431                 err = -ENODEV;
5432                 goto out_ieee80211_free_hw;
5433         }
5434
5435         pci_set_master(pdev);
5436
5437         err = pci_set_dma_mask(pdev, DMA_32BIT_MASK);
5438         if (!err)
5439                 err = pci_set_consistent_dma_mask(pdev, DMA_32BIT_MASK);
5440         if (err) {
5441                 IWL_WARN(priv, "No suitable DMA available.\n");
5442                 goto out_pci_disable_device;
5443         }
5444
5445         pci_set_drvdata(pdev, priv);
5446         err = pci_request_regions(pdev, DRV_NAME);
5447         if (err)
5448                 goto out_pci_disable_device;
5449
5450         /***********************
5451          * 3. Read REV Register
5452          * ********************/
5453         priv->hw_base = pci_iomap(pdev, 0, 0);
5454         if (!priv->hw_base) {
5455                 err = -ENODEV;
5456                 goto out_pci_release_regions;
5457         }
5458
5459         IWL_DEBUG_INFO(priv, "pci_resource_len = 0x%08llx\n",
5460                         (unsigned long long) pci_resource_len(pdev, 0));
5461         IWL_DEBUG_INFO(priv, "pci_resource_base = %p\n", priv->hw_base);
5462
5463         /* We disable the RETRY_TIMEOUT register (0x41) to keep
5464          * PCI Tx retries from interfering with C3 CPU state */
5465         pci_write_config_byte(pdev, 0x41, 0x00);
5466
5467         /* amp init */
5468         err = priv->cfg->ops->lib->apm_ops.init(priv);
5469         if (err < 0) {
5470                 IWL_DEBUG_INFO(priv, "Failed to init APMG\n");
5471                 goto out_iounmap;
5472         }
5473
5474         /***********************
5475          * 4. Read EEPROM
5476          * ********************/
5477
5478         /* Read the EEPROM */
5479         err = iwl_eeprom_init(priv);
5480         if (err) {
5481                 IWL_ERR(priv, "Unable to init EEPROM\n");
5482                 goto out_remove_sysfs;
5483         }
5484         /* MAC Address location in EEPROM same for 3945/4965 */
5485         eeprom = (struct iwl3945_eeprom *)priv->eeprom;
5486         memcpy(priv->mac_addr, eeprom->mac_address, ETH_ALEN);
5487         IWL_DEBUG_INFO(priv, "MAC address: %pM\n", priv->mac_addr);
5488         SET_IEEE80211_PERM_ADDR(priv->hw, priv->mac_addr);
5489
5490         /***********************
5491          * 5. Setup HW Constants
5492          * ********************/
5493         /* Device-specific setup */
5494         if (iwl3945_hw_set_hw_params(priv)) {
5495                 IWL_ERR(priv, "failed to set hw settings\n");
5496                 goto out_iounmap;
5497         }
5498
5499         /***********************
5500          * 6. Setup priv
5501          * ********************/
5502
5503         err = iwl3945_init_drv(priv);
5504         if (err) {
5505                 IWL_ERR(priv, "initializing driver failed\n");
5506                 goto out_free_geos;
5507         }
5508
5509         IWL_INFO(priv, "Detected Intel Wireless WiFi Link %s\n",
5510                 priv->cfg->name);
5511
5512         /***********************************
5513          * 7. Initialize Module Parameters
5514          * **********************************/
5515
5516         /* Initialize module parameter values here */
5517         /* Disable radio (SW RF KILL) via parameter when loading driver */
5518         if (iwl3945_mod_params.disable) {
5519                 set_bit(STATUS_RF_KILL_SW, &priv->status);
5520                 IWL_DEBUG_INFO(priv, "Radio disabled.\n");
5521         }
5522
5523
5524         /***********************
5525          * 8. Setup Services
5526          * ********************/
5527
5528         spin_lock_irqsave(&priv->lock, flags);
5529         iwl3945_disable_interrupts(priv);
5530         spin_unlock_irqrestore(&priv->lock, flags);
5531
5532         pci_enable_msi(priv->pci_dev);
5533
5534         err = request_irq(priv->pci_dev->irq, iwl3945_isr, IRQF_SHARED,
5535                           DRV_NAME, priv);
5536         if (err) {
5537                 IWL_ERR(priv, "Error allocating IRQ %d\n", priv->pci_dev->irq);
5538                 goto out_disable_msi;
5539         }
5540
5541         err = sysfs_create_group(&pdev->dev.kobj, &iwl3945_attribute_group);
5542         if (err) {
5543                 IWL_ERR(priv, "failed to create sysfs device attributes\n");
5544                 goto out_release_irq;
5545         }
5546
5547         iwl_set_rxon_channel(priv,
5548                              &priv->bands[IEEE80211_BAND_2GHZ].channels[5]);
5549         iwl3945_setup_deferred_work(priv);
5550         iwl3945_setup_rx_handlers(priv);
5551
5552         /*********************************
5553          * 9. Setup and Register mac80211
5554          * *******************************/
5555
5556         err = ieee80211_register_hw(priv->hw);
5557         if (err) {
5558                 IWL_ERR(priv, "Failed to register network device: %d\n", err);
5559                 goto  out_remove_sysfs;
5560         }
5561
5562         priv->hw->conf.beacon_int = 100;
5563         priv->mac80211_registered = 1;
5564
5565         err = iwl_rfkill_init(priv);
5566         if (err)
5567                 IWL_ERR(priv, "Unable to initialize RFKILL system. "
5568                                   "Ignoring error: %d\n", err);
5569
5570         /* Start monitoring the killswitch */
5571         queue_delayed_work(priv->workqueue, &priv->rfkill_poll,
5572                            2 * HZ);
5573
5574         return 0;
5575
5576  out_remove_sysfs:
5577         sysfs_remove_group(&pdev->dev.kobj, &iwl3945_attribute_group);
5578  out_free_geos:
5579         iwlcore_free_geos(priv);
5580
5581  out_release_irq:
5582         free_irq(priv->pci_dev->irq, priv);
5583         destroy_workqueue(priv->workqueue);
5584         priv->workqueue = NULL;
5585         iwl3945_unset_hw_params(priv);
5586  out_disable_msi:
5587         pci_disable_msi(priv->pci_dev);
5588  out_iounmap:
5589         pci_iounmap(pdev, priv->hw_base);
5590  out_pci_release_regions:
5591         pci_release_regions(pdev);
5592  out_pci_disable_device:
5593         pci_disable_device(pdev);
5594         pci_set_drvdata(pdev, NULL);
5595  out_ieee80211_free_hw:
5596         ieee80211_free_hw(priv->hw);
5597  out:
5598         return err;
5599 }
5600
5601 static void __devexit iwl3945_pci_remove(struct pci_dev *pdev)
5602 {
5603         struct iwl_priv *priv = pci_get_drvdata(pdev);
5604         unsigned long flags;
5605
5606         if (!priv)
5607                 return;
5608
5609         IWL_DEBUG_INFO(priv, "*** UNLOAD DRIVER ***\n");
5610
5611         set_bit(STATUS_EXIT_PENDING, &priv->status);
5612
5613         if (priv->mac80211_registered) {
5614                 ieee80211_unregister_hw(priv->hw);
5615                 priv->mac80211_registered = 0;
5616         } else {
5617                 iwl3945_down(priv);
5618         }
5619
5620         /* make sure we flush any pending irq or
5621          * tasklet for the driver
5622          */
5623         spin_lock_irqsave(&priv->lock, flags);
5624         iwl3945_disable_interrupts(priv);
5625         spin_unlock_irqrestore(&priv->lock, flags);
5626
5627         iwl_synchronize_irq(priv);
5628
5629         sysfs_remove_group(&pdev->dev.kobj, &iwl3945_attribute_group);
5630
5631         iwl_rfkill_unregister(priv);
5632         cancel_delayed_work(&priv->rfkill_poll);
5633
5634         iwl3945_dealloc_ucode_pci(priv);
5635
5636         if (priv->rxq.bd)
5637                 iwl_rx_queue_free(priv, &priv->rxq);
5638         iwl3945_hw_txq_ctx_free(priv);
5639
5640         iwl3945_unset_hw_params(priv);
5641         iwl3945_clear_stations_table(priv);
5642
5643         /*netif_stop_queue(dev); */
5644         flush_workqueue(priv->workqueue);
5645
5646         /* ieee80211_unregister_hw calls iwl3945_mac_stop, which flushes
5647          * priv->workqueue... so we can't take down the workqueue
5648          * until now... */
5649         destroy_workqueue(priv->workqueue);
5650         priv->workqueue = NULL;
5651
5652         free_irq(pdev->irq, priv);
5653         pci_disable_msi(pdev);
5654
5655         pci_iounmap(pdev, priv->hw_base);
5656         pci_release_regions(pdev);
5657         pci_disable_device(pdev);
5658         pci_set_drvdata(pdev, NULL);
5659
5660         iwl_free_channel_map(priv);
5661         iwlcore_free_geos(priv);
5662         kfree(priv->scan);
5663         if (priv->ibss_beacon)
5664                 dev_kfree_skb(priv->ibss_beacon);
5665
5666         ieee80211_free_hw(priv->hw);
5667 }
5668
5669 #ifdef CONFIG_PM
5670
5671 static int iwl3945_pci_suspend(struct pci_dev *pdev, pm_message_t state)
5672 {
5673         struct iwl_priv *priv = pci_get_drvdata(pdev);
5674
5675         if (priv->is_open) {
5676                 set_bit(STATUS_IN_SUSPEND, &priv->status);
5677                 iwl3945_mac_stop(priv->hw);
5678                 priv->is_open = 1;
5679         }
5680         pci_save_state(pdev);
5681         pci_disable_device(pdev);
5682         pci_set_power_state(pdev, PCI_D3hot);
5683
5684         return 0;
5685 }
5686
5687 static int iwl3945_pci_resume(struct pci_dev *pdev)
5688 {
5689         struct iwl_priv *priv = pci_get_drvdata(pdev);
5690         int ret;
5691
5692         pci_set_power_state(pdev, PCI_D0);
5693         ret = pci_enable_device(pdev);
5694         if (ret)
5695                 return ret;
5696         pci_restore_state(pdev);
5697
5698         if (priv->is_open)
5699                 iwl3945_mac_start(priv->hw);
5700
5701         clear_bit(STATUS_IN_SUSPEND, &priv->status);
5702         return 0;
5703 }
5704
5705 #endif /* CONFIG_PM */
5706
5707 /*****************************************************************************
5708  *
5709  * driver and module entry point
5710  *
5711  *****************************************************************************/
5712
5713 static struct pci_driver iwl3945_driver = {
5714         .name = DRV_NAME,
5715         .id_table = iwl3945_hw_card_ids,
5716         .probe = iwl3945_pci_probe,
5717         .remove = __devexit_p(iwl3945_pci_remove),
5718 #ifdef CONFIG_PM
5719         .suspend = iwl3945_pci_suspend,
5720         .resume = iwl3945_pci_resume,
5721 #endif
5722 };
5723
5724 static int __init iwl3945_init(void)
5725 {
5726
5727         int ret;
5728         printk(KERN_INFO DRV_NAME ": " DRV_DESCRIPTION ", " DRV_VERSION "\n");
5729         printk(KERN_INFO DRV_NAME ": " DRV_COPYRIGHT "\n");
5730
5731         ret = iwl3945_rate_control_register();
5732         if (ret) {
5733                 printk(KERN_ERR DRV_NAME
5734                        "Unable to register rate control algorithm: %d\n", ret);
5735                 return ret;
5736         }
5737
5738         ret = pci_register_driver(&iwl3945_driver);
5739         if (ret) {
5740                 printk(KERN_ERR DRV_NAME "Unable to initialize PCI module\n");
5741                 goto error_register;
5742         }
5743
5744         return ret;
5745
5746 error_register:
5747         iwl3945_rate_control_unregister();
5748         return ret;
5749 }
5750
5751 static void __exit iwl3945_exit(void)
5752 {
5753         pci_unregister_driver(&iwl3945_driver);
5754         iwl3945_rate_control_unregister();
5755 }
5756
5757 MODULE_FIRMWARE(IWL3945_MODULE_FIRMWARE(IWL3945_UCODE_API_MAX));
5758
5759 module_param_named(antenna, iwl3945_mod_params.antenna, int, 0444);
5760 MODULE_PARM_DESC(antenna, "select antenna (1=Main, 2=Aux, default 0 [both])");
5761 module_param_named(disable, iwl3945_mod_params.disable, int, 0444);
5762 MODULE_PARM_DESC(disable, "manually disable the radio (default 0 [radio on])");
5763 module_param_named(swcrypto, iwl3945_mod_params.sw_crypto, int, 0444);
5764 MODULE_PARM_DESC(swcrypto,
5765                  "using software crypto (default 1 [software])\n");
5766 module_param_named(debug, iwl3945_mod_params.debug, uint, 0444);
5767 MODULE_PARM_DESC(debug, "debug output mask");
5768 module_param_named(disable_hw_scan, iwl3945_mod_params.disable_hw_scan, int, 0444);
5769 MODULE_PARM_DESC(disable_hw_scan, "disable hardware scanning (default 0)");
5770
5771 module_param_named(queues_num, iwl3945_mod_params.num_of_queues, int, 0444);
5772 MODULE_PARM_DESC(queues_num, "number of hw queues.");
5773
5774 module_param_named(fw_restart3945, iwl3945_mod_params.restart_fw, int, 0444);
5775 MODULE_PARM_DESC(fw_restart3945, "restart firmware in case of error");
5776
5777 module_exit(iwl3945_exit);
5778 module_init(iwl3945_init);