iwlwifi: remove unused or twice defined members in iwl_priv
[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-3945.h"
55 #include "iwl-helpers.h"
56 #include "iwl-core.h"
57 #include "iwl-dev.h"
58
59 /*
60  * module name, copyright, version, etc.
61  */
62
63 #define DRV_DESCRIPTION \
64 "Intel(R) PRO/Wireless 3945ABG/BG Network Connection driver for Linux"
65
66 #ifdef CONFIG_IWL3945_DEBUG
67 #define VD "d"
68 #else
69 #define VD
70 #endif
71
72 #ifdef CONFIG_IWL3945_SPECTRUM_MEASUREMENT
73 #define VS "s"
74 #else
75 #define VS
76 #endif
77
78 #define IWL39_VERSION "1.2.26k" VD VS
79 #define DRV_COPYRIGHT   "Copyright(c) 2003-2009 Intel Corporation"
80 #define DRV_AUTHOR     "<ilw@linux.intel.com>"
81 #define DRV_VERSION     IWL39_VERSION
82
83
84 MODULE_DESCRIPTION(DRV_DESCRIPTION);
85 MODULE_VERSION(DRV_VERSION);
86 MODULE_AUTHOR(DRV_COPYRIGHT " " DRV_AUTHOR);
87 MODULE_LICENSE("GPL");
88
89  /* module parameters */
90 struct iwl_mod_params iwl3945_mod_params = {
91         .num_of_queues = IWL39_MAX_NUM_QUEUES,
92         .sw_crypto = 1,
93         /* the rest are 0 by default */
94 };
95
96 /*************** DMA-QUEUE-GENERAL-FUNCTIONS  *****
97  * DMA services
98  *
99  * Theory of operation
100  *
101  * A Tx or Rx queue resides in host DRAM, and is comprised of a circular buffer
102  * of buffer descriptors, each of which points to one or more data buffers for
103  * the device to read from or fill.  Driver and device exchange status of each
104  * queue via "read" and "write" pointers.  Driver keeps minimum of 2 empty
105  * entries in each circular buffer, to protect against confusing empty and full
106  * queue states.
107  *
108  * The device reads or writes the data in the queues via the device's several
109  * DMA/FIFO channels.  Each queue is mapped to a single DMA channel.
110  *
111  * For Tx queue, there are low mark and high mark limits. If, after queuing
112  * the packet for Tx, free space become < low mark, Tx queue stopped. When
113  * reclaiming packets (on 'tx done IRQ), if free space become > high mark,
114  * Tx queue resumed.
115  *
116  * The 3945 operates with six queues:  One receive queue, one transmit queue
117  * (#4) for sending commands to the device firmware, and four transmit queues
118  * (#0-3) for data tx via EDCA.  An additional 2 HCCA queues are unused.
119  ***************************************************/
120
121 /**
122  * iwl3945_queue_init - Initialize queue's high/low-water and read/write indexes
123  */
124 static int iwl3945_queue_init(struct iwl_priv *priv, struct iwl_queue *q,
125                           int count, int slots_num, u32 id)
126 {
127         q->n_bd = count;
128         q->n_window = slots_num;
129         q->id = id;
130
131         /* count must be power-of-two size, otherwise iwl_queue_inc_wrap
132          * and iwl_queue_dec_wrap are broken. */
133         BUG_ON(!is_power_of_2(count));
134
135         /* slots_num must be power-of-two size, otherwise
136          * get_cmd_index is broken. */
137         BUG_ON(!is_power_of_2(slots_num));
138
139         q->low_mark = q->n_window / 4;
140         if (q->low_mark < 4)
141                 q->low_mark = 4;
142
143         q->high_mark = q->n_window / 8;
144         if (q->high_mark < 2)
145                 q->high_mark = 2;
146
147         q->write_ptr = q->read_ptr = 0;
148
149         return 0;
150 }
151
152 /**
153  * iwl3945_tx_queue_alloc - Alloc driver data and TFD CB for one Tx/cmd queue
154  */
155 static int iwl3945_tx_queue_alloc(struct iwl_priv *priv,
156                               struct iwl_tx_queue *txq, u32 id)
157 {
158         struct pci_dev *dev = priv->pci_dev;
159
160         /* Driver private data, only for Tx (not command) queues,
161          * not shared with device. */
162         if (id != IWL_CMD_QUEUE_NUM) {
163                 txq->txb = kmalloc(sizeof(txq->txb[0]) *
164                                    TFD_QUEUE_SIZE_MAX, GFP_KERNEL);
165                 if (!txq->txb) {
166                         IWL_ERR(priv, "kmalloc for auxiliary BD "
167                                   "structures failed\n");
168                         goto error;
169                 }
170         } else
171                 txq->txb = NULL;
172
173         /* Circular buffer of transmit frame descriptors (TFDs),
174          * shared with device */
175         txq->tfds39 = pci_alloc_consistent(dev,
176                         sizeof(txq->tfds39[0]) * TFD_QUEUE_SIZE_MAX,
177                         &txq->q.dma_addr);
178
179         if (!txq->tfds39) {
180                 IWL_ERR(priv, "pci_alloc_consistent(%zd) failed\n",
181                           sizeof(txq->tfds39[0]) * TFD_QUEUE_SIZE_MAX);
182                 goto error;
183         }
184         txq->q.id = id;
185
186         return 0;
187
188  error:
189         kfree(txq->txb);
190         txq->txb = NULL;
191
192         return -ENOMEM;
193 }
194
195 /**
196  * iwl3945_tx_queue_init - Allocate and initialize one tx/cmd queue
197  */
198 int iwl3945_tx_queue_init(struct iwl_priv *priv,
199                       struct iwl_tx_queue *txq, int slots_num, u32 txq_id)
200 {
201         int len, i;
202         int rc = 0;
203
204         /*
205          * Alloc buffer array for commands (Tx or other types of commands).
206          * For the command queue (#4), allocate command space + one big
207          * command for scan, since scan command is very huge; the system will
208          * not have two scans at the same time, so only one is needed.
209          * For data Tx queues (all other queues), no super-size command
210          * space is needed.
211          */
212         len = sizeof(struct iwl_cmd);
213         for (i = 0; i <= slots_num; i++) {
214                 if (i == slots_num) {
215                         if (txq_id == IWL_CMD_QUEUE_NUM)
216                                 len += IWL_MAX_SCAN_SIZE;
217                         else
218                                 continue;
219                 }
220
221                 txq->cmd[i] = kmalloc(len, GFP_KERNEL);
222                 if (!txq->cmd[i])
223                         goto err;
224         }
225
226         /* Alloc driver data array and TFD circular buffer */
227         rc = iwl3945_tx_queue_alloc(priv, txq, txq_id);
228         if (rc)
229                 goto err;
230
231         txq->need_update = 0;
232
233         /* TFD_QUEUE_SIZE_MAX must be power-of-two size, otherwise
234          * iwl_queue_inc_wrap and iwl_queue_dec_wrap are broken. */
235         BUILD_BUG_ON(TFD_QUEUE_SIZE_MAX & (TFD_QUEUE_SIZE_MAX - 1));
236
237         /* Initialize queue high/low-water, head/tail indexes */
238         iwl3945_queue_init(priv, &txq->q, TFD_QUEUE_SIZE_MAX, slots_num, txq_id);
239
240         /* Tell device where to find queue, enable DMA channel. */
241         iwl3945_hw_tx_queue_init(priv, txq);
242
243         return 0;
244 err:
245         for (i = 0; i < slots_num; i++) {
246                 kfree(txq->cmd[i]);
247                 txq->cmd[i] = NULL;
248         }
249
250         if (txq_id == IWL_CMD_QUEUE_NUM) {
251                 kfree(txq->cmd[slots_num]);
252                 txq->cmd[slots_num] = NULL;
253         }
254         return -ENOMEM;
255 }
256
257 /**
258  * iwl3945_tx_queue_free - Deallocate DMA queue.
259  * @txq: Transmit queue to deallocate.
260  *
261  * Empty queue by removing and destroying all BD's.
262  * Free all buffers.
263  * 0-fill, but do not free "txq" descriptor structure.
264  */
265 void iwl3945_tx_queue_free(struct iwl_priv *priv, struct iwl_tx_queue *txq)
266 {
267         struct iwl_queue *q = &txq->q;
268         struct pci_dev *dev = priv->pci_dev;
269         int len, i;
270
271         if (q->n_bd == 0)
272                 return;
273
274         /* first, empty all BD's */
275         for (; q->write_ptr != q->read_ptr;
276              q->read_ptr = iwl_queue_inc_wrap(q->read_ptr, q->n_bd))
277                 priv->cfg->ops->lib->txq_free_tfd(priv, txq);
278
279         len = sizeof(struct iwl_cmd) * q->n_window;
280         if (q->id == IWL_CMD_QUEUE_NUM)
281                 len += IWL_MAX_SCAN_SIZE;
282
283         /* De-alloc array of command/tx buffers */
284         for (i = 0; i < TFD_TX_CMD_SLOTS; i++)
285                 kfree(txq->cmd[i]);
286
287         /* De-alloc circular buffer of TFDs */
288         if (txq->q.n_bd)
289                 pci_free_consistent(dev, sizeof(struct iwl3945_tfd) *
290                                     txq->q.n_bd, txq->tfds39, txq->q.dma_addr);
291
292         /* De-alloc array of per-TFD driver data */
293         kfree(txq->txb);
294         txq->txb = NULL;
295
296         /* 0-fill queue descriptor structure */
297         memset(txq, 0, sizeof(*txq));
298 }
299
300 /*************** STATION TABLE MANAGEMENT ****
301  * mac80211 should be examined to determine if sta_info is duplicating
302  * the functionality provided here
303  */
304
305 /**************************************************************/
306 #if 0 /* temporary disable till we add real remove station */
307 /**
308  * iwl3945_remove_station - Remove driver's knowledge of station.
309  *
310  * NOTE:  This does not remove station from device's station table.
311  */
312 static u8 iwl3945_remove_station(struct iwl_priv *priv, const u8 *addr, int is_ap)
313 {
314         int index = IWL_INVALID_STATION;
315         int i;
316         unsigned long flags;
317
318         spin_lock_irqsave(&priv->sta_lock, flags);
319
320         if (is_ap)
321                 index = IWL_AP_ID;
322         else if (is_broadcast_ether_addr(addr))
323                 index = priv->hw_params.bcast_sta_id;
324         else
325                 for (i = IWL_STA_ID; i < priv->hw_params.max_stations; i++)
326                         if (priv->stations_39[i].used &&
327                             !compare_ether_addr(priv->stations_39[i].sta.sta.addr,
328                                                 addr)) {
329                                 index = i;
330                                 break;
331                         }
332
333         if (unlikely(index == IWL_INVALID_STATION))
334                 goto out;
335
336         if (priv->stations_39[index].used) {
337                 priv->stations_39[index].used = 0;
338                 priv->num_stations--;
339         }
340
341         BUG_ON(priv->num_stations < 0);
342
343 out:
344         spin_unlock_irqrestore(&priv->sta_lock, flags);
345         return 0;
346 }
347 #endif
348
349 /**
350  * iwl3945_clear_stations_table - Clear the driver's station table
351  *
352  * NOTE:  This does not clear or otherwise alter the device's station table.
353  */
354 static void iwl3945_clear_stations_table(struct iwl_priv *priv)
355 {
356         unsigned long flags;
357
358         spin_lock_irqsave(&priv->sta_lock, flags);
359
360         priv->num_stations = 0;
361         memset(priv->stations_39, 0, sizeof(priv->stations_39));
362
363         spin_unlock_irqrestore(&priv->sta_lock, flags);
364 }
365
366 /**
367  * iwl3945_add_station - Add station to station tables in driver and device
368  */
369 u8 iwl3945_add_station(struct iwl_priv *priv, const u8 *addr, int is_ap, u8 flags)
370 {
371         int i;
372         int index = IWL_INVALID_STATION;
373         struct iwl3945_station_entry *station;
374         unsigned long flags_spin;
375         u8 rate;
376
377         spin_lock_irqsave(&priv->sta_lock, flags_spin);
378         if (is_ap)
379                 index = IWL_AP_ID;
380         else if (is_broadcast_ether_addr(addr))
381                 index = priv->hw_params.bcast_sta_id;
382         else
383                 for (i = IWL_STA_ID; i < priv->hw_params.max_stations; i++) {
384                         if (!compare_ether_addr(priv->stations_39[i].sta.sta.addr,
385                                                 addr)) {
386                                 index = i;
387                                 break;
388                         }
389
390                         if (!priv->stations_39[i].used &&
391                             index == IWL_INVALID_STATION)
392                                 index = i;
393                 }
394
395         /* These two conditions has the same outcome but keep them separate
396           since they have different meaning */
397         if (unlikely(index == IWL_INVALID_STATION)) {
398                 spin_unlock_irqrestore(&priv->sta_lock, flags_spin);
399                 return index;
400         }
401
402         if (priv->stations_39[index].used &&
403            !compare_ether_addr(priv->stations_39[index].sta.sta.addr, addr)) {
404                 spin_unlock_irqrestore(&priv->sta_lock, flags_spin);
405                 return index;
406         }
407
408         IWL_DEBUG_ASSOC("Add STA ID %d: %pM\n", index, addr);
409         station = &priv->stations_39[index];
410         station->used = 1;
411         priv->num_stations++;
412
413         /* Set up the REPLY_ADD_STA command to send to device */
414         memset(&station->sta, 0, sizeof(struct iwl3945_addsta_cmd));
415         memcpy(station->sta.sta.addr, addr, ETH_ALEN);
416         station->sta.mode = 0;
417         station->sta.sta.sta_id = index;
418         station->sta.station_flags = 0;
419
420         if (priv->band == IEEE80211_BAND_5GHZ)
421                 rate = IWL_RATE_6M_PLCP;
422         else
423                 rate =  IWL_RATE_1M_PLCP;
424
425         /* Turn on both antennas for the station... */
426         station->sta.rate_n_flags =
427                         iwl3945_hw_set_rate_n_flags(rate, RATE_MCS_ANT_AB_MSK);
428
429         spin_unlock_irqrestore(&priv->sta_lock, flags_spin);
430
431         /* Add station to device's station table */
432         iwl3945_send_add_station(priv, &station->sta, flags);
433         return index;
434
435 }
436
437 int iwl3945_send_statistics_request(struct iwl_priv *priv)
438 {
439         u32 val = 0;
440
441         struct iwl_host_cmd cmd = {
442                 .id = REPLY_STATISTICS_CMD,
443                 .len = sizeof(val),
444                 .data = &val,
445         };
446
447         return iwl_send_cmd_sync(priv, &cmd);
448 }
449
450 /**
451  * iwl3945_set_rxon_channel - Set the phymode and channel values in staging RXON
452  * @band: 2.4 or 5 GHz band
453  * @channel: Any channel valid for the requested band
454
455  * In addition to setting the staging RXON, priv->band is also set.
456  *
457  * NOTE:  Does not commit to the hardware; it sets appropriate bit fields
458  * in the staging RXON flag structure based on the band
459  */
460 static int iwl3945_set_rxon_channel(struct iwl_priv *priv,
461                                     enum ieee80211_band band,
462                                     u16 channel)
463 {
464         if (!iwl3945_get_channel_info(priv, band, channel)) {
465                 IWL_DEBUG_INFO("Could not set channel to %d [%d]\n",
466                                channel, band);
467                 return -EINVAL;
468         }
469
470         if ((le16_to_cpu(priv->staging39_rxon.channel) == channel) &&
471             (priv->band == band))
472                 return 0;
473
474         priv->staging39_rxon.channel = cpu_to_le16(channel);
475         if (band == IEEE80211_BAND_5GHZ)
476                 priv->staging39_rxon.flags &= ~RXON_FLG_BAND_24G_MSK;
477         else
478                 priv->staging39_rxon.flags |= RXON_FLG_BAND_24G_MSK;
479
480         priv->band = band;
481
482         IWL_DEBUG_INFO("Staging channel set to %d [%d]\n", channel, band);
483
484         return 0;
485 }
486
487 /**
488  * iwl3945_check_rxon_cmd - validate RXON structure is valid
489  *
490  * NOTE:  This is really only useful during development and can eventually
491  * be #ifdef'd out once the driver is stable and folks aren't actively
492  * making changes
493  */
494 static int iwl3945_check_rxon_cmd(struct iwl_priv *priv)
495 {
496         int error = 0;
497         int counter = 1;
498         struct iwl3945_rxon_cmd *rxon = &priv->staging39_rxon;
499
500         if (rxon->flags & RXON_FLG_BAND_24G_MSK) {
501                 error |= le32_to_cpu(rxon->flags &
502                                 (RXON_FLG_TGJ_NARROW_BAND_MSK |
503                                  RXON_FLG_RADAR_DETECT_MSK));
504                 if (error)
505                         IWL_WARN(priv, "check 24G fields %d | %d\n",
506                                     counter++, error);
507         } else {
508                 error |= (rxon->flags & RXON_FLG_SHORT_SLOT_MSK) ?
509                                 0 : le32_to_cpu(RXON_FLG_SHORT_SLOT_MSK);
510                 if (error)
511                         IWL_WARN(priv, "check 52 fields %d | %d\n",
512                                     counter++, error);
513                 error |= le32_to_cpu(rxon->flags & RXON_FLG_CCK_MSK);
514                 if (error)
515                         IWL_WARN(priv, "check 52 CCK %d | %d\n",
516                                     counter++, error);
517         }
518         error |= (rxon->node_addr[0] | rxon->bssid_addr[0]) & 0x1;
519         if (error)
520                 IWL_WARN(priv, "check mac addr %d | %d\n", counter++, error);
521
522         /* make sure basic rates 6Mbps and 1Mbps are supported */
523         error |= (((rxon->ofdm_basic_rates & IWL_RATE_6M_MASK) == 0) &&
524                   ((rxon->cck_basic_rates & IWL_RATE_1M_MASK) == 0));
525         if (error)
526                 IWL_WARN(priv, "check basic rate %d | %d\n", counter++, error);
527
528         error |= (le16_to_cpu(rxon->assoc_id) > 2007);
529         if (error)
530                 IWL_WARN(priv, "check assoc id %d | %d\n", counter++, error);
531
532         error |= ((rxon->flags & (RXON_FLG_CCK_MSK | RXON_FLG_SHORT_SLOT_MSK))
533                         == (RXON_FLG_CCK_MSK | RXON_FLG_SHORT_SLOT_MSK));
534         if (error)
535                 IWL_WARN(priv, "check CCK and short slot %d | %d\n",
536                             counter++, error);
537
538         error |= ((rxon->flags & (RXON_FLG_CCK_MSK | RXON_FLG_AUTO_DETECT_MSK))
539                         == (RXON_FLG_CCK_MSK | RXON_FLG_AUTO_DETECT_MSK));
540         if (error)
541                 IWL_WARN(priv, "check CCK & auto detect %d | %d\n",
542                             counter++, error);
543
544         error |= ((rxon->flags & (RXON_FLG_AUTO_DETECT_MSK |
545                         RXON_FLG_TGG_PROTECT_MSK)) == RXON_FLG_TGG_PROTECT_MSK);
546         if (error)
547                 IWL_WARN(priv, "check TGG and auto detect %d | %d\n",
548                             counter++, error);
549
550         if ((rxon->flags & RXON_FLG_DIS_DIV_MSK))
551                 error |= ((rxon->flags & (RXON_FLG_ANT_B_MSK |
552                                 RXON_FLG_ANT_A_MSK)) == 0);
553         if (error)
554                 IWL_WARN(priv, "check antenna %d %d\n", counter++, error);
555
556         if (error)
557                 IWL_WARN(priv, "Tuning to channel %d\n",
558                             le16_to_cpu(rxon->channel));
559
560         if (error) {
561                 IWL_ERR(priv, "Not a valid rxon_assoc_cmd field values\n");
562                 return -1;
563         }
564         return 0;
565 }
566
567 /**
568  * iwl3945_full_rxon_required - check if full RXON (vs RXON_ASSOC) cmd is needed
569  * @priv: staging_rxon is compared to active_rxon
570  *
571  * If the RXON structure is changing enough to require a new tune,
572  * or is clearing the RXON_FILTER_ASSOC_MSK, then return 1 to indicate that
573  * a new tune (full RXON command, rather than RXON_ASSOC cmd) is required.
574  */
575 static int iwl3945_full_rxon_required(struct iwl_priv *priv)
576 {
577
578         /* These items are only settable from the full RXON command */
579         if (!(iwl3945_is_associated(priv)) ||
580             compare_ether_addr(priv->staging39_rxon.bssid_addr,
581                                priv->active39_rxon.bssid_addr) ||
582             compare_ether_addr(priv->staging39_rxon.node_addr,
583                                priv->active39_rxon.node_addr) ||
584             compare_ether_addr(priv->staging39_rxon.wlap_bssid_addr,
585                                priv->active39_rxon.wlap_bssid_addr) ||
586             (priv->staging39_rxon.dev_type != priv->active39_rxon.dev_type) ||
587             (priv->staging39_rxon.channel != priv->active39_rxon.channel) ||
588             (priv->staging39_rxon.air_propagation !=
589              priv->active39_rxon.air_propagation) ||
590             (priv->staging39_rxon.assoc_id != priv->active39_rxon.assoc_id))
591                 return 1;
592
593         /* flags, filter_flags, ofdm_basic_rates, and cck_basic_rates can
594          * be updated with the RXON_ASSOC command -- however only some
595          * flag transitions are allowed using RXON_ASSOC */
596
597         /* Check if we are not switching bands */
598         if ((priv->staging39_rxon.flags & RXON_FLG_BAND_24G_MSK) !=
599             (priv->active39_rxon.flags & RXON_FLG_BAND_24G_MSK))
600                 return 1;
601
602         /* Check if we are switching association toggle */
603         if ((priv->staging39_rxon.filter_flags & RXON_FILTER_ASSOC_MSK) !=
604                 (priv->active39_rxon.filter_flags & RXON_FILTER_ASSOC_MSK))
605                 return 1;
606
607         return 0;
608 }
609
610 static int iwl3945_send_rxon_assoc(struct iwl_priv *priv)
611 {
612         int rc = 0;
613         struct iwl_rx_packet *res = NULL;
614         struct iwl3945_rxon_assoc_cmd rxon_assoc;
615         struct iwl_host_cmd cmd = {
616                 .id = REPLY_RXON_ASSOC,
617                 .len = sizeof(rxon_assoc),
618                 .meta.flags = CMD_WANT_SKB,
619                 .data = &rxon_assoc,
620         };
621         const struct iwl3945_rxon_cmd *rxon1 = &priv->staging39_rxon;
622         const struct iwl3945_rxon_cmd *rxon2 = &priv->active39_rxon;
623
624         if ((rxon1->flags == rxon2->flags) &&
625             (rxon1->filter_flags == rxon2->filter_flags) &&
626             (rxon1->cck_basic_rates == rxon2->cck_basic_rates) &&
627             (rxon1->ofdm_basic_rates == rxon2->ofdm_basic_rates)) {
628                 IWL_DEBUG_INFO("Using current RXON_ASSOC.  Not resending.\n");
629                 return 0;
630         }
631
632         rxon_assoc.flags = priv->staging39_rxon.flags;
633         rxon_assoc.filter_flags = priv->staging39_rxon.filter_flags;
634         rxon_assoc.ofdm_basic_rates = priv->staging39_rxon.ofdm_basic_rates;
635         rxon_assoc.cck_basic_rates = priv->staging39_rxon.cck_basic_rates;
636         rxon_assoc.reserved = 0;
637
638         rc = iwl_send_cmd_sync(priv, &cmd);
639         if (rc)
640                 return rc;
641
642         res = (struct iwl_rx_packet *)cmd.meta.u.skb->data;
643         if (res->hdr.flags & IWL_CMD_FAILED_MSK) {
644                 IWL_ERR(priv, "Bad return from REPLY_RXON_ASSOC command\n");
645                 rc = -EIO;
646         }
647
648         priv->alloc_rxb_skb--;
649         dev_kfree_skb_any(cmd.meta.u.skb);
650
651         return rc;
652 }
653
654 /**
655  * iwl3945_commit_rxon - commit staging_rxon to hardware
656  *
657  * The RXON command in staging_rxon is committed to the hardware and
658  * the active_rxon structure is updated with the new data.  This
659  * function correctly transitions out of the RXON_ASSOC_MSK state if
660  * a HW tune is required based on the RXON structure changes.
661  */
662 static int iwl3945_commit_rxon(struct iwl_priv *priv)
663 {
664         /* cast away the const for active_rxon in this function */
665         struct iwl3945_rxon_cmd *active_rxon = (void *)&priv->active39_rxon;
666         int rc = 0;
667
668         if (!iwl_is_alive(priv))
669                 return -1;
670
671         /* always get timestamp with Rx frame */
672         priv->staging39_rxon.flags |= RXON_FLG_TSF2HOST_MSK;
673
674         /* select antenna */
675         priv->staging39_rxon.flags &=
676             ~(RXON_FLG_DIS_DIV_MSK | RXON_FLG_ANT_SEL_MSK);
677         priv->staging39_rxon.flags |= iwl3945_get_antenna_flags(priv);
678
679         rc = iwl3945_check_rxon_cmd(priv);
680         if (rc) {
681                 IWL_ERR(priv, "Invalid RXON configuration.  Not committing.\n");
682                 return -EINVAL;
683         }
684
685         /* If we don't need to send a full RXON, we can use
686          * iwl3945_rxon_assoc_cmd which is used to reconfigure filter
687          * and other flags for the current radio configuration. */
688         if (!iwl3945_full_rxon_required(priv)) {
689                 rc = iwl3945_send_rxon_assoc(priv);
690                 if (rc) {
691                         IWL_ERR(priv, "Error setting RXON_ASSOC "
692                                   "configuration (%d).\n", rc);
693                         return rc;
694                 }
695
696                 memcpy(active_rxon, &priv->staging39_rxon, sizeof(*active_rxon));
697
698                 return 0;
699         }
700
701         /* If we are currently associated and the new config requires
702          * an RXON_ASSOC and the new config wants the associated mask enabled,
703          * we must clear the associated from the active configuration
704          * before we apply the new config */
705         if (iwl3945_is_associated(priv) &&
706             (priv->staging39_rxon.filter_flags & RXON_FILTER_ASSOC_MSK)) {
707                 IWL_DEBUG_INFO("Toggling associated bit on current RXON\n");
708                 active_rxon->filter_flags &= ~RXON_FILTER_ASSOC_MSK;
709
710                 rc = iwl_send_cmd_pdu(priv, REPLY_RXON,
711                                       sizeof(struct iwl3945_rxon_cmd),
712                                       &priv->active39_rxon);
713
714                 /* If the mask clearing failed then we set
715                  * active_rxon back to what it was previously */
716                 if (rc) {
717                         active_rxon->filter_flags |= RXON_FILTER_ASSOC_MSK;
718                         IWL_ERR(priv, "Error clearing ASSOC_MSK on current "
719                                   "configuration (%d).\n", rc);
720                         return rc;
721                 }
722         }
723
724         IWL_DEBUG_INFO("Sending RXON\n"
725                        "* with%s RXON_FILTER_ASSOC_MSK\n"
726                        "* channel = %d\n"
727                        "* bssid = %pM\n",
728                        ((priv->staging39_rxon.filter_flags &
729                          RXON_FILTER_ASSOC_MSK) ? "" : "out"),
730                        le16_to_cpu(priv->staging39_rxon.channel),
731                        priv->staging_rxon.bssid_addr);
732
733         /* Apply the new configuration */
734         rc = iwl_send_cmd_pdu(priv, REPLY_RXON,
735                               sizeof(struct iwl3945_rxon_cmd), &priv->staging39_rxon);
736         if (rc) {
737                 IWL_ERR(priv, "Error setting new configuration (%d).\n", rc);
738                 return rc;
739         }
740
741         memcpy(active_rxon, &priv->staging39_rxon, sizeof(*active_rxon));
742
743         iwl3945_clear_stations_table(priv);
744
745         /* If we issue a new RXON command which required a tune then we must
746          * send a new TXPOWER command or we won't be able to Tx any frames */
747         rc = iwl3945_hw_reg_send_txpower(priv);
748         if (rc) {
749                 IWL_ERR(priv, "Error setting Tx power (%d).\n", rc);
750                 return rc;
751         }
752
753         /* Add the broadcast address so we can send broadcast frames */
754         if (iwl3945_add_station(priv, iwl_bcast_addr, 0, 0) ==
755             IWL_INVALID_STATION) {
756                 IWL_ERR(priv, "Error adding BROADCAST address for transmit.\n");
757                 return -EIO;
758         }
759
760         /* If we have set the ASSOC_MSK and we are in BSS mode then
761          * add the IWL_AP_ID to the station rate table */
762         if (iwl3945_is_associated(priv) &&
763             (priv->iw_mode == NL80211_IFTYPE_STATION))
764                 if (iwl3945_add_station(priv, priv->active39_rxon.bssid_addr, 1, 0)
765                     == IWL_INVALID_STATION) {
766                         IWL_ERR(priv, "Error adding AP address for transmit\n");
767                         return -EIO;
768                 }
769
770         /* Init the hardware's rate fallback order based on the band */
771         rc = iwl3945_init_hw_rate_table(priv);
772         if (rc) {
773                 IWL_ERR(priv, "Error setting HW rate table: %02X\n", rc);
774                 return -EIO;
775         }
776
777         return 0;
778 }
779
780 static int iwl3945_send_bt_config(struct iwl_priv *priv)
781 {
782         struct iwl_bt_cmd bt_cmd = {
783                 .flags = 3,
784                 .lead_time = 0xAA,
785                 .max_kill = 1,
786                 .kill_ack_mask = 0,
787                 .kill_cts_mask = 0,
788         };
789
790         return iwl_send_cmd_pdu(priv, REPLY_BT_CONFIG,
791                                         sizeof(bt_cmd), &bt_cmd);
792 }
793
794 static int iwl3945_send_scan_abort(struct iwl_priv *priv)
795 {
796         int rc = 0;
797         struct iwl_rx_packet *res;
798         struct iwl_host_cmd cmd = {
799                 .id = REPLY_SCAN_ABORT_CMD,
800                 .meta.flags = CMD_WANT_SKB,
801         };
802
803         /* If there isn't a scan actively going on in the hardware
804          * then we are in between scan bands and not actually
805          * actively scanning, so don't send the abort command */
806         if (!test_bit(STATUS_SCAN_HW, &priv->status)) {
807                 clear_bit(STATUS_SCAN_ABORTING, &priv->status);
808                 return 0;
809         }
810
811         rc = iwl_send_cmd_sync(priv, &cmd);
812         if (rc) {
813                 clear_bit(STATUS_SCAN_ABORTING, &priv->status);
814                 return rc;
815         }
816
817         res = (struct iwl_rx_packet *)cmd.meta.u.skb->data;
818         if (res->u.status != CAN_ABORT_STATUS) {
819                 /* The scan abort will return 1 for success or
820                  * 2 for "failure".  A failure condition can be
821                  * due to simply not being in an active scan which
822                  * can occur if we send the scan abort before we
823                  * the microcode has notified us that a scan is
824                  * completed. */
825                 IWL_DEBUG_INFO("SCAN_ABORT returned %d.\n", res->u.status);
826                 clear_bit(STATUS_SCAN_ABORTING, &priv->status);
827                 clear_bit(STATUS_SCAN_HW, &priv->status);
828         }
829
830         dev_kfree_skb_any(cmd.meta.u.skb);
831
832         return rc;
833 }
834
835 static int iwl3945_add_sta_sync_callback(struct iwl_priv *priv,
836                                      struct iwl_cmd *cmd, struct sk_buff *skb)
837 {
838         struct iwl_rx_packet *res = NULL;
839
840         if (!skb) {
841                 IWL_ERR(priv, "Error: Response NULL in REPLY_ADD_STA.\n");
842                 return 1;
843         }
844
845         res = (struct iwl_rx_packet *)skb->data;
846         if (res->hdr.flags & IWL_CMD_FAILED_MSK) {
847                 IWL_ERR(priv, "Bad return from REPLY_ADD_STA (0x%08X)\n",
848                           res->hdr.flags);
849                 return 1;
850         }
851
852         switch (res->u.add_sta.status) {
853         case ADD_STA_SUCCESS_MSK:
854                 break;
855         default:
856                 break;
857         }
858
859         /* We didn't cache the SKB; let the caller free it */
860         return 1;
861 }
862
863 int iwl3945_send_add_station(struct iwl_priv *priv,
864                          struct iwl3945_addsta_cmd *sta, u8 flags)
865 {
866         struct iwl_rx_packet *res = NULL;
867         int rc = 0;
868         struct iwl_host_cmd cmd = {
869                 .id = REPLY_ADD_STA,
870                 .len = sizeof(struct iwl3945_addsta_cmd),
871                 .meta.flags = flags,
872                 .data = sta,
873         };
874
875         if (flags & CMD_ASYNC)
876                 cmd.meta.u.callback = iwl3945_add_sta_sync_callback;
877         else
878                 cmd.meta.flags |= CMD_WANT_SKB;
879
880         rc = iwl_send_cmd(priv, &cmd);
881
882         if (rc || (flags & CMD_ASYNC))
883                 return rc;
884
885         res = (struct iwl_rx_packet *)cmd.meta.u.skb->data;
886         if (res->hdr.flags & IWL_CMD_FAILED_MSK) {
887                 IWL_ERR(priv, "Bad return from REPLY_ADD_STA (0x%08X)\n",
888                           res->hdr.flags);
889                 rc = -EIO;
890         }
891
892         if (rc == 0) {
893                 switch (res->u.add_sta.status) {
894                 case ADD_STA_SUCCESS_MSK:
895                         IWL_DEBUG_INFO("REPLY_ADD_STA PASSED\n");
896                         break;
897                 default:
898                         rc = -EIO;
899                         IWL_WARN(priv, "REPLY_ADD_STA failed\n");
900                         break;
901                 }
902         }
903
904         priv->alloc_rxb_skb--;
905         dev_kfree_skb_any(cmd.meta.u.skb);
906
907         return rc;
908 }
909
910 static int iwl3945_update_sta_key_info(struct iwl_priv *priv,
911                                    struct ieee80211_key_conf *keyconf,
912                                    u8 sta_id)
913 {
914         unsigned long flags;
915         __le16 key_flags = 0;
916
917         switch (keyconf->alg) {
918         case ALG_CCMP:
919                 key_flags |= STA_KEY_FLG_CCMP;
920                 key_flags |= cpu_to_le16(
921                                 keyconf->keyidx << STA_KEY_FLG_KEYID_POS);
922                 key_flags &= ~STA_KEY_FLG_INVALID;
923                 break;
924         case ALG_TKIP:
925         case ALG_WEP:
926         default:
927                 return -EINVAL;
928         }
929         spin_lock_irqsave(&priv->sta_lock, flags);
930         priv->stations_39[sta_id].keyinfo.alg = keyconf->alg;
931         priv->stations_39[sta_id].keyinfo.keylen = keyconf->keylen;
932         memcpy(priv->stations_39[sta_id].keyinfo.key, keyconf->key,
933                keyconf->keylen);
934
935         memcpy(priv->stations_39[sta_id].sta.key.key, keyconf->key,
936                keyconf->keylen);
937         priv->stations_39[sta_id].sta.key.key_flags = key_flags;
938         priv->stations_39[sta_id].sta.sta.modify_mask = STA_MODIFY_KEY_MASK;
939         priv->stations_39[sta_id].sta.mode = STA_CONTROL_MODIFY_MSK;
940
941         spin_unlock_irqrestore(&priv->sta_lock, flags);
942
943         IWL_DEBUG_INFO("hwcrypto: modify ucode station key info\n");
944         iwl3945_send_add_station(priv, &priv->stations_39[sta_id].sta, 0);
945         return 0;
946 }
947
948 static int iwl3945_clear_sta_key_info(struct iwl_priv *priv, u8 sta_id)
949 {
950         unsigned long flags;
951
952         spin_lock_irqsave(&priv->sta_lock, flags);
953         memset(&priv->stations_39[sta_id].keyinfo, 0, sizeof(struct iwl3945_hw_key));
954         memset(&priv->stations_39[sta_id].sta.key, 0,
955                 sizeof(struct iwl4965_keyinfo));
956         priv->stations_39[sta_id].sta.key.key_flags = STA_KEY_FLG_NO_ENC;
957         priv->stations_39[sta_id].sta.sta.modify_mask = STA_MODIFY_KEY_MASK;
958         priv->stations_39[sta_id].sta.mode = STA_CONTROL_MODIFY_MSK;
959         spin_unlock_irqrestore(&priv->sta_lock, flags);
960
961         IWL_DEBUG_INFO("hwcrypto: clear ucode station key info\n");
962         iwl3945_send_add_station(priv, &priv->stations_39[sta_id].sta, 0);
963         return 0;
964 }
965
966 static void iwl3945_clear_free_frames(struct iwl_priv *priv)
967 {
968         struct list_head *element;
969
970         IWL_DEBUG_INFO("%d frames on pre-allocated heap on clear.\n",
971                        priv->frames_count);
972
973         while (!list_empty(&priv->free_frames)) {
974                 element = priv->free_frames.next;
975                 list_del(element);
976                 kfree(list_entry(element, struct iwl3945_frame, list));
977                 priv->frames_count--;
978         }
979
980         if (priv->frames_count) {
981                 IWL_WARN(priv, "%d frames still in use.  Did we lose one?\n",
982                             priv->frames_count);
983                 priv->frames_count = 0;
984         }
985 }
986
987 static struct iwl3945_frame *iwl3945_get_free_frame(struct iwl_priv *priv)
988 {
989         struct iwl3945_frame *frame;
990         struct list_head *element;
991         if (list_empty(&priv->free_frames)) {
992                 frame = kzalloc(sizeof(*frame), GFP_KERNEL);
993                 if (!frame) {
994                         IWL_ERR(priv, "Could not allocate frame!\n");
995                         return NULL;
996                 }
997
998                 priv->frames_count++;
999                 return frame;
1000         }
1001
1002         element = priv->free_frames.next;
1003         list_del(element);
1004         return list_entry(element, struct iwl3945_frame, list);
1005 }
1006
1007 static void iwl3945_free_frame(struct iwl_priv *priv, struct iwl3945_frame *frame)
1008 {
1009         memset(frame, 0, sizeof(*frame));
1010         list_add(&frame->list, &priv->free_frames);
1011 }
1012
1013 unsigned int iwl3945_fill_beacon_frame(struct iwl_priv *priv,
1014                                 struct ieee80211_hdr *hdr,
1015                                 int left)
1016 {
1017
1018         if (!iwl3945_is_associated(priv) || !priv->ibss_beacon ||
1019             ((priv->iw_mode != NL80211_IFTYPE_ADHOC) &&
1020              (priv->iw_mode != NL80211_IFTYPE_AP)))
1021                 return 0;
1022
1023         if (priv->ibss_beacon->len > left)
1024                 return 0;
1025
1026         memcpy(hdr, priv->ibss_beacon->data, priv->ibss_beacon->len);
1027
1028         return priv->ibss_beacon->len;
1029 }
1030
1031 static u8 iwl3945_rate_get_lowest_plcp(struct iwl_priv *priv)
1032 {
1033         u8 i;
1034         int rate_mask;
1035
1036         /* Set rate mask*/
1037         if (priv->staging39_rxon.flags & RXON_FLG_BAND_24G_MSK)
1038                 rate_mask = priv->active_rate_basic & IWL_CCK_RATES_MASK;
1039         else
1040                 rate_mask = priv->active_rate_basic & IWL_OFDM_RATES_MASK;
1041
1042         for (i = IWL_RATE_1M_INDEX; i != IWL_RATE_INVALID;
1043              i = iwl3945_rates[i].next_ieee) {
1044                 if (rate_mask & (1 << i))
1045                         return iwl3945_rates[i].plcp;
1046         }
1047
1048         /* No valid rate was found. Assign the lowest one */
1049         if (priv->staging39_rxon.flags & RXON_FLG_BAND_24G_MSK)
1050                 return IWL_RATE_1M_PLCP;
1051         else
1052                 return IWL_RATE_6M_PLCP;
1053 }
1054
1055 static int iwl3945_send_beacon_cmd(struct iwl_priv *priv)
1056 {
1057         struct iwl3945_frame *frame;
1058         unsigned int frame_size;
1059         int rc;
1060         u8 rate;
1061
1062         frame = iwl3945_get_free_frame(priv);
1063
1064         if (!frame) {
1065                 IWL_ERR(priv, "Could not obtain free frame buffer for beacon "
1066                           "command.\n");
1067                 return -ENOMEM;
1068         }
1069
1070         rate = iwl3945_rate_get_lowest_plcp(priv);
1071
1072         frame_size = iwl3945_hw_get_beacon_cmd(priv, frame, rate);
1073
1074         rc = iwl_send_cmd_pdu(priv, REPLY_TX_BEACON, frame_size,
1075                               &frame->u.cmd[0]);
1076
1077         iwl3945_free_frame(priv, frame);
1078
1079         return rc;
1080 }
1081
1082 /******************************************************************************
1083  *
1084  * EEPROM related functions
1085  *
1086  ******************************************************************************/
1087
1088 static void get_eeprom_mac(struct iwl_priv *priv, u8 *mac)
1089 {
1090         memcpy(mac, priv->eeprom39.mac_address, 6);
1091 }
1092
1093 /*
1094  * Clear the OWNER_MSK, to establish driver (instead of uCode running on
1095  * embedded controller) as EEPROM reader; each read is a series of pulses
1096  * to/from the EEPROM chip, not a single event, so even reads could conflict
1097  * if they weren't arbitrated by some ownership mechanism.  Here, the driver
1098  * simply claims ownership, which should be safe when this function is called
1099  * (i.e. before loading uCode!).
1100  */
1101 static inline int iwl3945_eeprom_acquire_semaphore(struct iwl_priv *priv)
1102 {
1103         _iwl_clear_bit(priv, CSR_EEPROM_GP, CSR_EEPROM_GP_IF_OWNER_MSK);
1104         return 0;
1105 }
1106
1107 /**
1108  * iwl3945_eeprom_init - read EEPROM contents
1109  *
1110  * Load the EEPROM contents from adapter into priv->eeprom39
1111  *
1112  * NOTE:  This routine uses the non-debug IO access functions.
1113  */
1114 int iwl3945_eeprom_init(struct iwl_priv *priv)
1115 {
1116         u16 *e = (u16 *)&priv->eeprom39;
1117         u32 gp = iwl_read32(priv, CSR_EEPROM_GP);
1118         int sz = sizeof(priv->eeprom39);
1119         int ret;
1120         u16 addr;
1121
1122         /* The EEPROM structure has several padding buffers within it
1123          * and when adding new EEPROM maps is subject to programmer errors
1124          * which may be very difficult to identify without explicitly
1125          * checking the resulting size of the eeprom map. */
1126         BUILD_BUG_ON(sizeof(priv->eeprom39) != IWL_EEPROM_IMAGE_SIZE);
1127
1128         if ((gp & CSR_EEPROM_GP_VALID_MSK) == CSR_EEPROM_GP_BAD_SIGNATURE) {
1129                 IWL_ERR(priv, "EEPROM not found, EEPROM_GP=0x%08x\n", gp);
1130                 return -ENOENT;
1131         }
1132
1133         /* Make sure driver (instead of uCode) is allowed to read EEPROM */
1134         ret = iwl3945_eeprom_acquire_semaphore(priv);
1135         if (ret < 0) {
1136                 IWL_ERR(priv, "Failed to acquire EEPROM semaphore.\n");
1137                 return -ENOENT;
1138         }
1139
1140         /* eeprom is an array of 16bit values */
1141         for (addr = 0; addr < sz; addr += sizeof(u16)) {
1142                 u32 r;
1143
1144                 _iwl_write32(priv, CSR_EEPROM_REG,
1145                                  CSR_EEPROM_REG_MSK_ADDR & (addr << 1));
1146                 _iwl_clear_bit(priv, CSR_EEPROM_REG, CSR_EEPROM_REG_BIT_CMD);
1147                 ret = iwl_poll_direct_bit(priv, CSR_EEPROM_REG,
1148                                               CSR_EEPROM_REG_READ_VALID_MSK,
1149                                               IWL_EEPROM_ACCESS_TIMEOUT);
1150                 if (ret < 0) {
1151                         IWL_ERR(priv, "Time out reading EEPROM[%d]\n", addr);
1152                         return ret;
1153                 }
1154
1155                 r = _iwl_read_direct32(priv, CSR_EEPROM_REG);
1156                 e[addr / 2] = le16_to_cpu((__force __le16)(r >> 16));
1157         }
1158
1159         return 0;
1160 }
1161
1162 static void iwl3945_unset_hw_params(struct iwl_priv *priv)
1163 {
1164         if (priv->shared_virt)
1165                 pci_free_consistent(priv->pci_dev,
1166                                     sizeof(struct iwl3945_shared),
1167                                     priv->shared_virt,
1168                                     priv->shared_phys);
1169 }
1170
1171 /**
1172  * iwl3945_supported_rate_to_ie - fill in the supported rate in IE field
1173  *
1174  * return : set the bit for each supported rate insert in ie
1175  */
1176 static u16 iwl3945_supported_rate_to_ie(u8 *ie, u16 supported_rate,
1177                                     u16 basic_rate, int *left)
1178 {
1179         u16 ret_rates = 0, bit;
1180         int i;
1181         u8 *cnt = ie;
1182         u8 *rates = ie + 1;
1183
1184         for (bit = 1, i = 0; i < IWL_RATE_COUNT; i++, bit <<= 1) {
1185                 if (bit & supported_rate) {
1186                         ret_rates |= bit;
1187                         rates[*cnt] = iwl3945_rates[i].ieee |
1188                                 ((bit & basic_rate) ? 0x80 : 0x00);
1189                         (*cnt)++;
1190                         (*left)--;
1191                         if ((*left <= 0) ||
1192                             (*cnt >= IWL_SUPPORTED_RATES_IE_LEN))
1193                                 break;
1194                 }
1195         }
1196
1197         return ret_rates;
1198 }
1199
1200 /**
1201  * iwl3945_fill_probe_req - fill in all required fields and IE for probe request
1202  */
1203 static u16 iwl3945_fill_probe_req(struct iwl_priv *priv,
1204                               struct ieee80211_mgmt *frame,
1205                               int left)
1206 {
1207         int len = 0;
1208         u8 *pos = NULL;
1209         u16 active_rates, ret_rates, cck_rates;
1210
1211         /* Make sure there is enough space for the probe request,
1212          * two mandatory IEs and the data */
1213         left -= 24;
1214         if (left < 0)
1215                 return 0;
1216         len += 24;
1217
1218         frame->frame_control = cpu_to_le16(IEEE80211_STYPE_PROBE_REQ);
1219         memcpy(frame->da, iwl_bcast_addr, ETH_ALEN);
1220         memcpy(frame->sa, priv->mac_addr, ETH_ALEN);
1221         memcpy(frame->bssid, iwl_bcast_addr, ETH_ALEN);
1222         frame->seq_ctrl = 0;
1223
1224         /* fill in our indirect SSID IE */
1225         /* ...next IE... */
1226
1227         left -= 2;
1228         if (left < 0)
1229                 return 0;
1230         len += 2;
1231         pos = &(frame->u.probe_req.variable[0]);
1232         *pos++ = WLAN_EID_SSID;
1233         *pos++ = 0;
1234
1235         /* fill in supported rate */
1236         /* ...next IE... */
1237         left -= 2;
1238         if (left < 0)
1239                 return 0;
1240
1241         /* ... fill it in... */
1242         *pos++ = WLAN_EID_SUPP_RATES;
1243         *pos = 0;
1244
1245         priv->active_rate = priv->rates_mask;
1246         active_rates = priv->active_rate;
1247         priv->active_rate_basic = priv->rates_mask & IWL_BASIC_RATES_MASK;
1248
1249         cck_rates = IWL_CCK_RATES_MASK & active_rates;
1250         ret_rates = iwl3945_supported_rate_to_ie(pos, cck_rates,
1251                         priv->active_rate_basic, &left);
1252         active_rates &= ~ret_rates;
1253
1254         ret_rates = iwl3945_supported_rate_to_ie(pos, active_rates,
1255                                  priv->active_rate_basic, &left);
1256         active_rates &= ~ret_rates;
1257
1258         len += 2 + *pos;
1259         pos += (*pos) + 1;
1260         if (active_rates == 0)
1261                 goto fill_end;
1262
1263         /* fill in supported extended rate */
1264         /* ...next IE... */
1265         left -= 2;
1266         if (left < 0)
1267                 return 0;
1268         /* ... fill it in... */
1269         *pos++ = WLAN_EID_EXT_SUPP_RATES;
1270         *pos = 0;
1271         iwl3945_supported_rate_to_ie(pos, active_rates,
1272                                  priv->active_rate_basic, &left);
1273         if (*pos > 0)
1274                 len += 2 + *pos;
1275
1276  fill_end:
1277         return (u16)len;
1278 }
1279
1280 /*
1281  * QoS  support
1282 */
1283 static int iwl3945_send_qos_params_command(struct iwl_priv *priv,
1284                                        struct iwl_qosparam_cmd *qos)
1285 {
1286
1287         return iwl_send_cmd_pdu(priv, REPLY_QOS_PARAM,
1288                                 sizeof(struct iwl_qosparam_cmd), qos);
1289 }
1290
1291 static void iwl3945_activate_qos(struct iwl_priv *priv, u8 force)
1292 {
1293         unsigned long flags;
1294
1295         if (test_bit(STATUS_EXIT_PENDING, &priv->status))
1296                 return;
1297
1298         spin_lock_irqsave(&priv->lock, flags);
1299         priv->qos_data.def_qos_parm.qos_flags = 0;
1300
1301         if (priv->qos_data.qos_cap.q_AP.queue_request &&
1302             !priv->qos_data.qos_cap.q_AP.txop_request)
1303                 priv->qos_data.def_qos_parm.qos_flags |=
1304                         QOS_PARAM_FLG_TXOP_TYPE_MSK;
1305
1306         if (priv->qos_data.qos_active)
1307                 priv->qos_data.def_qos_parm.qos_flags |=
1308                         QOS_PARAM_FLG_UPDATE_EDCA_MSK;
1309
1310         spin_unlock_irqrestore(&priv->lock, flags);
1311
1312         if (force || iwl3945_is_associated(priv)) {
1313                 IWL_DEBUG_QOS("send QoS cmd with QoS active %d \n",
1314                               priv->qos_data.qos_active);
1315
1316                 iwl3945_send_qos_params_command(priv,
1317                                 &(priv->qos_data.def_qos_parm));
1318         }
1319 }
1320
1321 /*
1322  * Power management (not Tx power!) functions
1323  */
1324 #define MSEC_TO_USEC 1024
1325
1326
1327 #define NOSLP __constant_cpu_to_le16(0), 0, 0
1328 #define SLP IWL_POWER_DRIVER_ALLOW_SLEEP_MSK, 0, 0
1329 #define SLP_TIMEOUT(T) __constant_cpu_to_le32((T) * MSEC_TO_USEC)
1330 #define SLP_VEC(X0, X1, X2, X3, X4) {__constant_cpu_to_le32(X0), \
1331                                      __constant_cpu_to_le32(X1), \
1332                                      __constant_cpu_to_le32(X2), \
1333                                      __constant_cpu_to_le32(X3), \
1334                                      __constant_cpu_to_le32(X4)}
1335
1336 /* default power management (not Tx power) table values */
1337 /* for TIM  0-10 */
1338 static struct iwl_power_vec_entry range_0[IWL39_POWER_AC] = {
1339         {{NOSLP, SLP_TIMEOUT(0), SLP_TIMEOUT(0), SLP_VEC(0, 0, 0, 0, 0)}, 0},
1340         {{SLP, SLP_TIMEOUT(200), SLP_TIMEOUT(500), SLP_VEC(1, 2, 3, 4, 4)}, 0},
1341         {{SLP, SLP_TIMEOUT(200), SLP_TIMEOUT(300), SLP_VEC(2, 4, 6, 7, 7)}, 0},
1342         {{SLP, SLP_TIMEOUT(50), SLP_TIMEOUT(100), SLP_VEC(2, 6, 9, 9, 10)}, 0},
1343         {{SLP, SLP_TIMEOUT(50), SLP_TIMEOUT(25), SLP_VEC(2, 7, 9, 9, 10)}, 1},
1344         {{SLP, SLP_TIMEOUT(25), SLP_TIMEOUT(25), SLP_VEC(4, 7, 10, 10, 10)}, 1}
1345 };
1346
1347 /* for TIM > 10 */
1348 static struct iwl_power_vec_entry range_1[IWL39_POWER_AC] = {
1349         {{NOSLP, SLP_TIMEOUT(0), SLP_TIMEOUT(0), SLP_VEC(0, 0, 0, 0, 0)}, 0},
1350         {{SLP, SLP_TIMEOUT(200), SLP_TIMEOUT(500),
1351                  SLP_VEC(1, 2, 3, 4, 0xFF)}, 0},
1352         {{SLP, SLP_TIMEOUT(200), SLP_TIMEOUT(300),
1353                  SLP_VEC(2, 4, 6, 7, 0xFF)}, 0},
1354         {{SLP, SLP_TIMEOUT(50), SLP_TIMEOUT(100),
1355                  SLP_VEC(2, 6, 9, 9, 0xFF)}, 0},
1356         {{SLP, SLP_TIMEOUT(50), SLP_TIMEOUT(25), SLP_VEC(2, 7, 9, 9, 0xFF)}, 0},
1357         {{SLP, SLP_TIMEOUT(25), SLP_TIMEOUT(25),
1358                  SLP_VEC(4, 7, 10, 10, 0xFF)}, 0}
1359 };
1360
1361 int iwl3945_power_init_handle(struct iwl_priv *priv)
1362 {
1363         int rc = 0, i;
1364         struct iwl3945_power_mgr *pow_data;
1365         int size = sizeof(struct iwl_power_vec_entry) * IWL39_POWER_AC;
1366         u16 pci_pm;
1367
1368         IWL_DEBUG_POWER("Initialize power \n");
1369
1370         pow_data = &(priv->power_data_39);
1371
1372         memset(pow_data, 0, sizeof(*pow_data));
1373
1374         pow_data->active_index = IWL_POWER_RANGE_0;
1375         pow_data->dtim_val = 0xffff;
1376
1377         memcpy(&pow_data->pwr_range_0[0], &range_0[0], size);
1378         memcpy(&pow_data->pwr_range_1[0], &range_1[0], size);
1379
1380         rc = pci_read_config_word(priv->pci_dev, PCI_LINK_CTRL, &pci_pm);
1381         if (rc != 0)
1382                 return 0;
1383         else {
1384                 struct iwl_powertable_cmd *cmd;
1385
1386                 IWL_DEBUG_POWER("adjust power command flags\n");
1387
1388                 for (i = 0; i < IWL39_POWER_AC; i++) {
1389                         cmd = &pow_data->pwr_range_0[i].cmd;
1390
1391                         if (pci_pm & 0x1)
1392                                 cmd->flags &= ~IWL_POWER_PCI_PM_MSK;
1393                         else
1394                                 cmd->flags |= IWL_POWER_PCI_PM_MSK;
1395                 }
1396         }
1397         return rc;
1398 }
1399
1400 static int iwl3945_update_power_cmd(struct iwl_priv *priv,
1401                                 struct iwl_powertable_cmd *cmd, u32 mode)
1402 {
1403         int rc = 0, i;
1404         u8 skip;
1405         u32 max_sleep = 0;
1406         struct iwl_power_vec_entry *range;
1407         u8 period = 0;
1408         struct iwl3945_power_mgr *pow_data;
1409
1410         if (mode > IWL_POWER_INDEX_5) {
1411                 IWL_DEBUG_POWER("Error invalid power mode \n");
1412                 return -1;
1413         }
1414         pow_data = &(priv->power_data_39);
1415
1416         if (pow_data->active_index == IWL_POWER_RANGE_0)
1417                 range = &pow_data->pwr_range_0[0];
1418         else
1419                 range = &pow_data->pwr_range_1[1];
1420
1421         memcpy(cmd, &range[mode].cmd, sizeof(struct iwl3945_powertable_cmd));
1422
1423 #ifdef IWL_MAC80211_DISABLE
1424         if (priv->assoc_network != NULL) {
1425                 unsigned long flags;
1426
1427                 period = priv->assoc_network->tim.tim_period;
1428         }
1429 #endif  /*IWL_MAC80211_DISABLE */
1430         skip = range[mode].no_dtim;
1431
1432         if (period == 0) {
1433                 period = 1;
1434                 skip = 0;
1435         }
1436
1437         if (skip == 0) {
1438                 max_sleep = period;
1439                 cmd->flags &= ~IWL_POWER_SLEEP_OVER_DTIM_MSK;
1440         } else {
1441                 __le32 slp_itrvl = cmd->sleep_interval[IWL_POWER_VEC_SIZE - 1];
1442                 max_sleep = (le32_to_cpu(slp_itrvl) / period) * period;
1443                 cmd->flags |= IWL_POWER_SLEEP_OVER_DTIM_MSK;
1444         }
1445
1446         for (i = 0; i < IWL_POWER_VEC_SIZE; i++) {
1447                 if (le32_to_cpu(cmd->sleep_interval[i]) > max_sleep)
1448                         cmd->sleep_interval[i] = cpu_to_le32(max_sleep);
1449         }
1450
1451         IWL_DEBUG_POWER("Flags value = 0x%08X\n", cmd->flags);
1452         IWL_DEBUG_POWER("Tx timeout = %u\n", le32_to_cpu(cmd->tx_data_timeout));
1453         IWL_DEBUG_POWER("Rx timeout = %u\n", le32_to_cpu(cmd->rx_data_timeout));
1454         IWL_DEBUG_POWER("Sleep interval vector = { %d , %d , %d , %d , %d }\n",
1455                         le32_to_cpu(cmd->sleep_interval[0]),
1456                         le32_to_cpu(cmd->sleep_interval[1]),
1457                         le32_to_cpu(cmd->sleep_interval[2]),
1458                         le32_to_cpu(cmd->sleep_interval[3]),
1459                         le32_to_cpu(cmd->sleep_interval[4]));
1460
1461         return rc;
1462 }
1463
1464 static int iwl3945_send_power_mode(struct iwl_priv *priv, u32 mode)
1465 {
1466         u32 uninitialized_var(final_mode);
1467         int rc;
1468         struct iwl_powertable_cmd cmd;
1469
1470         /* If on battery, set to 3,
1471          * if plugged into AC power, set to CAM ("continuously aware mode"),
1472          * else user level */
1473         switch (mode) {
1474         case IWL39_POWER_BATTERY:
1475                 final_mode = IWL_POWER_INDEX_3;
1476                 break;
1477         case IWL39_POWER_AC:
1478                 final_mode = IWL_POWER_MODE_CAM;
1479                 break;
1480         default:
1481                 final_mode = mode;
1482                 break;
1483         }
1484
1485         iwl3945_update_power_cmd(priv, &cmd, final_mode);
1486
1487         /* FIXME use get_hcmd_size 3945 command is 4 bytes shorter */
1488         rc = iwl_send_cmd_pdu(priv, POWER_TABLE_CMD,
1489                               sizeof(struct iwl3945_powertable_cmd), &cmd);
1490
1491         if (final_mode == IWL_POWER_MODE_CAM)
1492                 clear_bit(STATUS_POWER_PMI, &priv->status);
1493         else
1494                 set_bit(STATUS_POWER_PMI, &priv->status);
1495
1496         return rc;
1497 }
1498
1499 #define MAX_UCODE_BEACON_INTERVAL       1024
1500 #define INTEL_CONN_LISTEN_INTERVAL      __constant_cpu_to_le16(0xA)
1501
1502 static __le16 iwl3945_adjust_beacon_interval(u16 beacon_val)
1503 {
1504         u16 new_val = 0;
1505         u16 beacon_factor = 0;
1506
1507         beacon_factor =
1508             (beacon_val + MAX_UCODE_BEACON_INTERVAL)
1509                 / MAX_UCODE_BEACON_INTERVAL;
1510         new_val = beacon_val / beacon_factor;
1511
1512         return cpu_to_le16(new_val);
1513 }
1514
1515 static void iwl3945_setup_rxon_timing(struct iwl_priv *priv)
1516 {
1517         u64 interval_tm_unit;
1518         u64 tsf, result;
1519         unsigned long flags;
1520         struct ieee80211_conf *conf = NULL;
1521         u16 beacon_int = 0;
1522
1523         conf = ieee80211_get_hw_conf(priv->hw);
1524
1525         spin_lock_irqsave(&priv->lock, flags);
1526         priv->rxon_timing.timestamp = cpu_to_le64(priv->timestamp);
1527         priv->rxon_timing.listen_interval = INTEL_CONN_LISTEN_INTERVAL;
1528
1529         tsf = priv->timestamp;
1530
1531         beacon_int = priv->beacon_int;
1532         spin_unlock_irqrestore(&priv->lock, flags);
1533
1534         if (priv->iw_mode == NL80211_IFTYPE_STATION) {
1535                 if (beacon_int == 0) {
1536                         priv->rxon_timing.beacon_interval = cpu_to_le16(100);
1537                         priv->rxon_timing.beacon_init_val = cpu_to_le32(102400);
1538                 } else {
1539                         priv->rxon_timing.beacon_interval =
1540                                 cpu_to_le16(beacon_int);
1541                         priv->rxon_timing.beacon_interval =
1542                             iwl3945_adjust_beacon_interval(
1543                                 le16_to_cpu(priv->rxon_timing.beacon_interval));
1544                 }
1545
1546                 priv->rxon_timing.atim_window = 0;
1547         } else {
1548                 priv->rxon_timing.beacon_interval =
1549                         iwl3945_adjust_beacon_interval(conf->beacon_int);
1550                 /* TODO: we need to get atim_window from upper stack
1551                  * for now we set to 0 */
1552                 priv->rxon_timing.atim_window = 0;
1553         }
1554
1555         interval_tm_unit =
1556                 (le16_to_cpu(priv->rxon_timing.beacon_interval) * 1024);
1557         result = do_div(tsf, interval_tm_unit);
1558         priv->rxon_timing.beacon_init_val =
1559             cpu_to_le32((u32) ((u64) interval_tm_unit - result));
1560
1561         IWL_DEBUG_ASSOC
1562             ("beacon interval %d beacon timer %d beacon tim %d\n",
1563                 le16_to_cpu(priv->rxon_timing.beacon_interval),
1564                 le32_to_cpu(priv->rxon_timing.beacon_init_val),
1565                 le16_to_cpu(priv->rxon_timing.atim_window));
1566 }
1567
1568 static int iwl3945_scan_initiate(struct iwl_priv *priv)
1569 {
1570         if (!iwl_is_ready_rf(priv)) {
1571                 IWL_DEBUG_SCAN("Aborting scan due to not ready.\n");
1572                 return -EIO;
1573         }
1574
1575         if (test_bit(STATUS_SCANNING, &priv->status)) {
1576                 IWL_DEBUG_SCAN("Scan already in progress.\n");
1577                 return -EAGAIN;
1578         }
1579
1580         if (test_bit(STATUS_SCAN_ABORTING, &priv->status)) {
1581                 IWL_DEBUG_SCAN("Scan request while abort pending.  "
1582                                "Queuing.\n");
1583                 return -EAGAIN;
1584         }
1585
1586         IWL_DEBUG_INFO("Starting scan...\n");
1587         if (priv->cfg->sku & IWL_SKU_G)
1588                 priv->scan_bands |= BIT(IEEE80211_BAND_2GHZ);
1589         if (priv->cfg->sku & IWL_SKU_A)
1590                 priv->scan_bands |= BIT(IEEE80211_BAND_5GHZ);
1591         set_bit(STATUS_SCANNING, &priv->status);
1592         priv->scan_start = jiffies;
1593         priv->scan_pass_start = priv->scan_start;
1594
1595         queue_work(priv->workqueue, &priv->request_scan);
1596
1597         return 0;
1598 }
1599
1600 static int iwl3945_set_rxon_hwcrypto(struct iwl_priv *priv, int hw_decrypt)
1601 {
1602         struct iwl3945_rxon_cmd *rxon = &priv->staging39_rxon;
1603
1604         if (hw_decrypt)
1605                 rxon->filter_flags &= ~RXON_FILTER_DIS_DECRYPT_MSK;
1606         else
1607                 rxon->filter_flags |= RXON_FILTER_DIS_DECRYPT_MSK;
1608
1609         return 0;
1610 }
1611
1612 static void iwl3945_set_flags_for_phymode(struct iwl_priv *priv,
1613                                           enum ieee80211_band band)
1614 {
1615         if (band == IEEE80211_BAND_5GHZ) {
1616                 priv->staging39_rxon.flags &=
1617                     ~(RXON_FLG_BAND_24G_MSK | RXON_FLG_AUTO_DETECT_MSK
1618                       | RXON_FLG_CCK_MSK);
1619                 priv->staging39_rxon.flags |= RXON_FLG_SHORT_SLOT_MSK;
1620         } else {
1621                 /* Copied from iwl3945_bg_post_associate() */
1622                 if (priv->assoc_capability & WLAN_CAPABILITY_SHORT_SLOT_TIME)
1623                         priv->staging39_rxon.flags |= RXON_FLG_SHORT_SLOT_MSK;
1624                 else
1625                         priv->staging39_rxon.flags &= ~RXON_FLG_SHORT_SLOT_MSK;
1626
1627                 if (priv->iw_mode == NL80211_IFTYPE_ADHOC)
1628                         priv->staging39_rxon.flags &= ~RXON_FLG_SHORT_SLOT_MSK;
1629
1630                 priv->staging39_rxon.flags |= RXON_FLG_BAND_24G_MSK;
1631                 priv->staging39_rxon.flags |= RXON_FLG_AUTO_DETECT_MSK;
1632                 priv->staging39_rxon.flags &= ~RXON_FLG_CCK_MSK;
1633         }
1634 }
1635
1636 /*
1637  * initialize rxon structure with default values from eeprom
1638  */
1639 static void iwl3945_connection_init_rx_config(struct iwl_priv *priv,
1640                                               int mode)
1641 {
1642         const struct iwl_channel_info *ch_info;
1643
1644         memset(&priv->staging39_rxon, 0, sizeof(priv->staging39_rxon));
1645
1646         switch (mode) {
1647         case NL80211_IFTYPE_AP:
1648                 priv->staging39_rxon.dev_type = RXON_DEV_TYPE_AP;
1649                 break;
1650
1651         case NL80211_IFTYPE_STATION:
1652                 priv->staging39_rxon.dev_type = RXON_DEV_TYPE_ESS;
1653                 priv->staging39_rxon.filter_flags = RXON_FILTER_ACCEPT_GRP_MSK;
1654                 break;
1655
1656         case NL80211_IFTYPE_ADHOC:
1657                 priv->staging39_rxon.dev_type = RXON_DEV_TYPE_IBSS;
1658                 priv->staging39_rxon.flags = RXON_FLG_SHORT_PREAMBLE_MSK;
1659                 priv->staging39_rxon.filter_flags = RXON_FILTER_BCON_AWARE_MSK |
1660                                                   RXON_FILTER_ACCEPT_GRP_MSK;
1661                 break;
1662
1663         case NL80211_IFTYPE_MONITOR:
1664                 priv->staging39_rxon.dev_type = RXON_DEV_TYPE_SNIFFER;
1665                 priv->staging39_rxon.filter_flags = RXON_FILTER_PROMISC_MSK |
1666                     RXON_FILTER_CTL2HOST_MSK | RXON_FILTER_ACCEPT_GRP_MSK;
1667                 break;
1668         default:
1669                 IWL_ERR(priv, "Unsupported interface type %d\n", mode);
1670                 break;
1671         }
1672
1673 #if 0
1674         /* TODO:  Figure out when short_preamble would be set and cache from
1675          * that */
1676         if (!hw_to_local(priv->hw)->short_preamble)
1677                 priv->staging39_rxon.flags &= ~RXON_FLG_SHORT_PREAMBLE_MSK;
1678         else
1679                 priv->staging39_rxon.flags |= RXON_FLG_SHORT_PREAMBLE_MSK;
1680 #endif
1681
1682         ch_info = iwl3945_get_channel_info(priv, priv->band,
1683                                        le16_to_cpu(priv->active39_rxon.channel));
1684
1685         if (!ch_info)
1686                 ch_info = &priv->channel_info[0];
1687
1688         /*
1689          * in some case A channels are all non IBSS
1690          * in this case force B/G channel
1691          */
1692         if ((mode == NL80211_IFTYPE_ADHOC) && !(is_channel_ibss(ch_info)))
1693                 ch_info = &priv->channel_info[0];
1694
1695         priv->staging39_rxon.channel = cpu_to_le16(ch_info->channel);
1696         if (is_channel_a_band(ch_info))
1697                 priv->band = IEEE80211_BAND_5GHZ;
1698         else
1699                 priv->band = IEEE80211_BAND_2GHZ;
1700
1701         iwl3945_set_flags_for_phymode(priv, priv->band);
1702
1703         priv->staging39_rxon.ofdm_basic_rates =
1704             (IWL_OFDM_RATES_MASK >> IWL_FIRST_OFDM_RATE) & 0xFF;
1705         priv->staging39_rxon.cck_basic_rates =
1706             (IWL_CCK_RATES_MASK >> IWL_FIRST_CCK_RATE) & 0xF;
1707 }
1708
1709 static int iwl3945_set_mode(struct iwl_priv *priv, int mode)
1710 {
1711         if (mode == NL80211_IFTYPE_ADHOC) {
1712                 const struct iwl_channel_info *ch_info;
1713
1714                 ch_info = iwl3945_get_channel_info(priv,
1715                         priv->band,
1716                         le16_to_cpu(priv->staging39_rxon.channel));
1717
1718                 if (!ch_info || !is_channel_ibss(ch_info)) {
1719                         IWL_ERR(priv, "channel %d not IBSS channel\n",
1720                                   le16_to_cpu(priv->staging39_rxon.channel));
1721                         return -EINVAL;
1722                 }
1723         }
1724
1725         iwl3945_connection_init_rx_config(priv, mode);
1726         memcpy(priv->staging39_rxon.node_addr, priv->mac_addr, ETH_ALEN);
1727
1728         iwl3945_clear_stations_table(priv);
1729
1730         /* don't commit rxon if rf-kill is on*/
1731         if (!iwl_is_ready_rf(priv))
1732                 return -EAGAIN;
1733
1734         cancel_delayed_work(&priv->scan_check);
1735         if (iwl_scan_cancel_timeout(priv, 100)) {
1736                 IWL_WARN(priv, "Aborted scan still in progress after 100ms\n");
1737                 IWL_DEBUG_MAC80211("leaving - scan abort failed.\n");
1738                 return -EAGAIN;
1739         }
1740
1741         iwl3945_commit_rxon(priv);
1742
1743         return 0;
1744 }
1745
1746 static void iwl3945_build_tx_cmd_hwcrypto(struct iwl_priv *priv,
1747                                       struct ieee80211_tx_info *info,
1748                                       struct iwl_cmd *cmd,
1749                                       struct sk_buff *skb_frag,
1750                                       int last_frag)
1751 {
1752         struct iwl3945_tx_cmd *tx = (struct iwl3945_tx_cmd *)cmd->cmd.payload;
1753         struct iwl3945_hw_key *keyinfo =
1754             &priv->stations_39[info->control.hw_key->hw_key_idx].keyinfo;
1755
1756         switch (keyinfo->alg) {
1757         case ALG_CCMP:
1758                 tx->sec_ctl = TX_CMD_SEC_CCM;
1759                 memcpy(tx->key, keyinfo->key, keyinfo->keylen);
1760                 IWL_DEBUG_TX("tx_cmd with AES hwcrypto\n");
1761                 break;
1762
1763         case ALG_TKIP:
1764 #if 0
1765                 tx->sec_ctl = TX_CMD_SEC_TKIP;
1766
1767                 if (last_frag)
1768                         memcpy(tx->tkip_mic.byte, skb_frag->tail - 8,
1769                                8);
1770                 else
1771                         memset(tx->tkip_mic.byte, 0, 8);
1772 #endif
1773                 break;
1774
1775         case ALG_WEP:
1776                 tx->sec_ctl = TX_CMD_SEC_WEP |
1777                     (info->control.hw_key->hw_key_idx & TX_CMD_SEC_MSK) << TX_CMD_SEC_SHIFT;
1778
1779                 if (keyinfo->keylen == 13)
1780                         tx->sec_ctl |= TX_CMD_SEC_KEY128;
1781
1782                 memcpy(&tx->key[3], keyinfo->key, keyinfo->keylen);
1783
1784                 IWL_DEBUG_TX("Configuring packet for WEP encryption "
1785                              "with key %d\n", info->control.hw_key->hw_key_idx);
1786                 break;
1787
1788         default:
1789                 IWL_ERR(priv, "Unknown encode alg %d\n", keyinfo->alg);
1790                 break;
1791         }
1792 }
1793
1794 /*
1795  * handle build REPLY_TX command notification.
1796  */
1797 static void iwl3945_build_tx_cmd_basic(struct iwl_priv *priv,
1798                                   struct iwl_cmd *cmd,
1799                                   struct ieee80211_tx_info *info,
1800                                   struct ieee80211_hdr *hdr, u8 std_id)
1801 {
1802         struct iwl3945_tx_cmd *tx = (struct iwl3945_tx_cmd *)cmd->cmd.payload;
1803         __le32 tx_flags = tx->tx_flags;
1804         __le16 fc = hdr->frame_control;
1805         u8 rc_flags = info->control.rates[0].flags;
1806
1807         tx->stop_time.life_time = TX_CMD_LIFE_TIME_INFINITE;
1808         if (!(info->flags & IEEE80211_TX_CTL_NO_ACK)) {
1809                 tx_flags |= TX_CMD_FLG_ACK_MSK;
1810                 if (ieee80211_is_mgmt(fc))
1811                         tx_flags |= TX_CMD_FLG_SEQ_CTL_MSK;
1812                 if (ieee80211_is_probe_resp(fc) &&
1813                     !(le16_to_cpu(hdr->seq_ctrl) & 0xf))
1814                         tx_flags |= TX_CMD_FLG_TSF_MSK;
1815         } else {
1816                 tx_flags &= (~TX_CMD_FLG_ACK_MSK);
1817                 tx_flags |= TX_CMD_FLG_SEQ_CTL_MSK;
1818         }
1819
1820         tx->sta_id = std_id;
1821         if (ieee80211_has_morefrags(fc))
1822                 tx_flags |= TX_CMD_FLG_MORE_FRAG_MSK;
1823
1824         if (ieee80211_is_data_qos(fc)) {
1825                 u8 *qc = ieee80211_get_qos_ctl(hdr);
1826                 tx->tid_tspec = qc[0] & 0xf;
1827                 tx_flags &= ~TX_CMD_FLG_SEQ_CTL_MSK;
1828         } else {
1829                 tx_flags |= TX_CMD_FLG_SEQ_CTL_MSK;
1830         }
1831
1832         if (rc_flags & IEEE80211_TX_RC_USE_RTS_CTS) {
1833                 tx_flags |= TX_CMD_FLG_RTS_MSK;
1834                 tx_flags &= ~TX_CMD_FLG_CTS_MSK;
1835         } else if (rc_flags & IEEE80211_TX_RC_USE_CTS_PROTECT) {
1836                 tx_flags &= ~TX_CMD_FLG_RTS_MSK;
1837                 tx_flags |= TX_CMD_FLG_CTS_MSK;
1838         }
1839
1840         if ((tx_flags & TX_CMD_FLG_RTS_MSK) || (tx_flags & TX_CMD_FLG_CTS_MSK))
1841                 tx_flags |= TX_CMD_FLG_FULL_TXOP_PROT_MSK;
1842
1843         tx_flags &= ~(TX_CMD_FLG_ANT_SEL_MSK);
1844         if (ieee80211_is_mgmt(fc)) {
1845                 if (ieee80211_is_assoc_req(fc) || ieee80211_is_reassoc_req(fc))
1846                         tx->timeout.pm_frame_timeout = cpu_to_le16(3);
1847                 else
1848                         tx->timeout.pm_frame_timeout = cpu_to_le16(2);
1849         } else {
1850                 tx->timeout.pm_frame_timeout = 0;
1851 #ifdef CONFIG_IWL3945_LEDS
1852                 priv->rxtxpackets += le16_to_cpu(cmd->cmd.tx.len);
1853 #endif
1854         }
1855
1856         tx->driver_txop = 0;
1857         tx->tx_flags = tx_flags;
1858         tx->next_frame_len = 0;
1859 }
1860
1861 /**
1862  * iwl3945_get_sta_id - Find station's index within station table
1863  */
1864 static int iwl3945_get_sta_id(struct iwl_priv *priv, struct ieee80211_hdr *hdr)
1865 {
1866         int sta_id;
1867         u16 fc = le16_to_cpu(hdr->frame_control);
1868
1869         /* If this frame is broadcast or management, use broadcast station id */
1870         if (((fc & IEEE80211_FCTL_FTYPE) != IEEE80211_FTYPE_DATA) ||
1871             is_multicast_ether_addr(hdr->addr1))
1872                 return priv->hw_params.bcast_sta_id;
1873
1874         switch (priv->iw_mode) {
1875
1876         /* If we are a client station in a BSS network, use the special
1877          * AP station entry (that's the only station we communicate with) */
1878         case NL80211_IFTYPE_STATION:
1879                 return IWL_AP_ID;
1880
1881         /* If we are an AP, then find the station, or use BCAST */
1882         case NL80211_IFTYPE_AP:
1883                 sta_id = iwl3945_hw_find_station(priv, hdr->addr1);
1884                 if (sta_id != IWL_INVALID_STATION)
1885                         return sta_id;
1886                 return priv->hw_params.bcast_sta_id;
1887
1888         /* If this frame is going out to an IBSS network, find the station,
1889          * or create a new station table entry */
1890         case NL80211_IFTYPE_ADHOC: {
1891                 /* Create new station table entry */
1892                 sta_id = iwl3945_hw_find_station(priv, hdr->addr1);
1893                 if (sta_id != IWL_INVALID_STATION)
1894                         return sta_id;
1895
1896                 sta_id = iwl3945_add_station(priv, hdr->addr1, 0, CMD_ASYNC);
1897
1898                 if (sta_id != IWL_INVALID_STATION)
1899                         return sta_id;
1900
1901                 IWL_DEBUG_DROP("Station %pM not in station map. "
1902                                "Defaulting to broadcast...\n",
1903                                hdr->addr1);
1904                 iwl_print_hex_dump(priv, IWL_DL_DROP, (u8 *) hdr, sizeof(*hdr));
1905                 return priv->hw_params.bcast_sta_id;
1906         }
1907         /* If we are in monitor mode, use BCAST. This is required for
1908          * packet injection. */
1909         case NL80211_IFTYPE_MONITOR:
1910                 return priv->hw_params.bcast_sta_id;
1911
1912         default:
1913                 IWL_WARN(priv, "Unknown mode of operation: %d\n",
1914                         priv->iw_mode);
1915                 return priv->hw_params.bcast_sta_id;
1916         }
1917 }
1918
1919 /*
1920  * start REPLY_TX command process
1921  */
1922 static int iwl3945_tx_skb(struct iwl_priv *priv, struct sk_buff *skb)
1923 {
1924         struct ieee80211_hdr *hdr = (struct ieee80211_hdr *)skb->data;
1925         struct ieee80211_tx_info *info = IEEE80211_SKB_CB(skb);
1926         struct iwl3945_tx_cmd *tx;
1927         struct iwl_tx_queue *txq = NULL;
1928         struct iwl_queue *q = NULL;
1929         struct iwl_cmd *out_cmd = NULL;
1930         dma_addr_t phys_addr;
1931         dma_addr_t txcmd_phys;
1932         int txq_id = skb_get_queue_mapping(skb);
1933         u16 len, idx, len_org, hdr_len;
1934         u8 id;
1935         u8 unicast;
1936         u8 sta_id;
1937         u8 tid = 0;
1938         u16 seq_number = 0;
1939         __le16 fc;
1940         u8 wait_write_ptr = 0;
1941         u8 *qc = NULL;
1942         unsigned long flags;
1943         int rc;
1944
1945         spin_lock_irqsave(&priv->lock, flags);
1946         if (iwl_is_rfkill(priv)) {
1947                 IWL_DEBUG_DROP("Dropping - RF KILL\n");
1948                 goto drop_unlock;
1949         }
1950
1951         if ((ieee80211_get_tx_rate(priv->hw, info)->hw_value & 0xFF) == IWL_INVALID_RATE) {
1952                 IWL_ERR(priv, "ERROR: No TX rate available.\n");
1953                 goto drop_unlock;
1954         }
1955
1956         unicast = !is_multicast_ether_addr(hdr->addr1);
1957         id = 0;
1958
1959         fc = hdr->frame_control;
1960
1961 #ifdef CONFIG_IWL3945_DEBUG
1962         if (ieee80211_is_auth(fc))
1963                 IWL_DEBUG_TX("Sending AUTH frame\n");
1964         else if (ieee80211_is_assoc_req(fc))
1965                 IWL_DEBUG_TX("Sending ASSOC frame\n");
1966         else if (ieee80211_is_reassoc_req(fc))
1967                 IWL_DEBUG_TX("Sending REASSOC frame\n");
1968 #endif
1969
1970         /* drop all data frame if we are not associated */
1971         if (ieee80211_is_data(fc) &&
1972             (priv->iw_mode != NL80211_IFTYPE_MONITOR) && /* packet injection */
1973             (!iwl3945_is_associated(priv) ||
1974              ((priv->iw_mode == NL80211_IFTYPE_STATION) && !priv->assoc_id))) {
1975                 IWL_DEBUG_DROP("Dropping - !iwl3945_is_associated\n");
1976                 goto drop_unlock;
1977         }
1978
1979         spin_unlock_irqrestore(&priv->lock, flags);
1980
1981         hdr_len = ieee80211_hdrlen(fc);
1982
1983         /* Find (or create) index into station table for destination station */
1984         sta_id = iwl3945_get_sta_id(priv, hdr);
1985         if (sta_id == IWL_INVALID_STATION) {
1986                 IWL_DEBUG_DROP("Dropping - INVALID STATION: %pM\n",
1987                                hdr->addr1);
1988                 goto drop;
1989         }
1990
1991         IWL_DEBUG_RATE("station Id %d\n", sta_id);
1992
1993         if (ieee80211_is_data_qos(fc)) {
1994                 qc = ieee80211_get_qos_ctl(hdr);
1995                 tid = qc[0] & IEEE80211_QOS_CTL_TID_MASK;
1996                 seq_number = priv->stations_39[sta_id].tid[tid].seq_number &
1997                                 IEEE80211_SCTL_SEQ;
1998                 hdr->seq_ctrl = cpu_to_le16(seq_number) |
1999                         (hdr->seq_ctrl &
2000                                 __constant_cpu_to_le16(IEEE80211_SCTL_FRAG));
2001                 seq_number += 0x10;
2002         }
2003
2004         /* Descriptor for chosen Tx queue */
2005         txq = &priv->txq[txq_id];
2006         q = &txq->q;
2007
2008         spin_lock_irqsave(&priv->lock, flags);
2009
2010         idx = get_cmd_index(q, q->write_ptr, 0);
2011
2012         /* Set up driver data for this TFD */
2013         memset(&(txq->txb[q->write_ptr]), 0, sizeof(struct iwl_tx_info));
2014         txq->txb[q->write_ptr].skb[0] = skb;
2015
2016         /* Init first empty entry in queue's array of Tx/cmd buffers */
2017         out_cmd = txq->cmd[idx];
2018         tx = (struct iwl3945_tx_cmd *)out_cmd->cmd.payload;
2019         memset(&out_cmd->hdr, 0, sizeof(out_cmd->hdr));
2020         memset(tx, 0, sizeof(*tx));
2021
2022         /*
2023          * Set up the Tx-command (not MAC!) header.
2024          * Store the chosen Tx queue and TFD index within the sequence field;
2025          * after Tx, uCode's Tx response will return this value so driver can
2026          * locate the frame within the tx queue and do post-tx processing.
2027          */
2028         out_cmd->hdr.cmd = REPLY_TX;
2029         out_cmd->hdr.sequence = cpu_to_le16((u16)(QUEUE_TO_SEQ(txq_id) |
2030                                 INDEX_TO_SEQ(q->write_ptr)));
2031
2032         /* Copy MAC header from skb into command buffer */
2033         memcpy(tx->hdr, hdr, hdr_len);
2034
2035         /*
2036          * Use the first empty entry in this queue's command buffer array
2037          * to contain the Tx command and MAC header concatenated together
2038          * (payload data will be in another buffer).
2039          * Size of this varies, due to varying MAC header length.
2040          * If end is not dword aligned, we'll have 2 extra bytes at the end
2041          * of the MAC header (device reads on dword boundaries).
2042          * We'll tell device about this padding later.
2043          */
2044         len = sizeof(struct iwl3945_tx_cmd) +
2045                         sizeof(struct iwl_cmd_header) + hdr_len;
2046
2047         len_org = len;
2048         len = (len + 3) & ~3;
2049
2050         if (len_org != len)
2051                 len_org = 1;
2052         else
2053                 len_org = 0;
2054
2055         /* Physical address of this Tx command's header (not MAC header!),
2056          * within command buffer array. */
2057         txcmd_phys = pci_map_single(priv->pci_dev,
2058                                     out_cmd, sizeof(struct iwl_cmd),
2059                                     PCI_DMA_TODEVICE);
2060         pci_unmap_addr_set(&out_cmd->meta, mapping, txcmd_phys);
2061         pci_unmap_len_set(&out_cmd->meta, len, sizeof(struct iwl_cmd));
2062         /* Add buffer containing Tx command and MAC(!) header to TFD's
2063          * first entry */
2064         txcmd_phys += offsetof(struct iwl_cmd, hdr);
2065
2066         /* Add buffer containing Tx command and MAC(!) header to TFD's
2067          * first entry */
2068         priv->cfg->ops->lib->txq_attach_buf_to_tfd(priv, txq,
2069                                                    txcmd_phys, len, 1, 0);
2070
2071         if (info->control.hw_key)
2072                 iwl3945_build_tx_cmd_hwcrypto(priv, info, out_cmd, skb, 0);
2073
2074         /* Set up TFD's 2nd entry to point directly to remainder of skb,
2075          * if any (802.11 null frames have no payload). */
2076         len = skb->len - hdr_len;
2077         if (len) {
2078                 phys_addr = pci_map_single(priv->pci_dev, skb->data + hdr_len,
2079                                            len, PCI_DMA_TODEVICE);
2080                 priv->cfg->ops->lib->txq_attach_buf_to_tfd(priv, txq,
2081                                                            phys_addr, len,
2082                                                            0, U32_PAD(len));
2083         }
2084
2085         /* Total # bytes to be transmitted */
2086         len = (u16)skb->len;
2087         tx->len = cpu_to_le16(len);
2088
2089         /* TODO need this for burst mode later on */
2090         iwl3945_build_tx_cmd_basic(priv, out_cmd, info, hdr, sta_id);
2091
2092         /* set is_hcca to 0; it probably will never be implemented */
2093         iwl3945_hw_build_tx_cmd_rate(priv, out_cmd, info, hdr, sta_id, 0);
2094
2095         tx->tx_flags &= ~TX_CMD_FLG_ANT_A_MSK;
2096         tx->tx_flags &= ~TX_CMD_FLG_ANT_B_MSK;
2097
2098         if (!ieee80211_has_morefrags(hdr->frame_control)) {
2099                 txq->need_update = 1;
2100                 if (qc)
2101                         priv->stations_39[sta_id].tid[tid].seq_number = seq_number;
2102         } else {
2103                 wait_write_ptr = 1;
2104                 txq->need_update = 0;
2105         }
2106
2107         iwl_print_hex_dump(priv, IWL_DL_TX, tx, sizeof(*tx));
2108
2109         iwl_print_hex_dump(priv, IWL_DL_TX, (u8 *)tx->hdr,
2110                            ieee80211_hdrlen(fc));
2111
2112         /* Tell device the write index *just past* this latest filled TFD */
2113         q->write_ptr = iwl_queue_inc_wrap(q->write_ptr, q->n_bd);
2114         rc = iwl_txq_update_write_ptr(priv, txq);
2115         spin_unlock_irqrestore(&priv->lock, flags);
2116
2117         if (rc)
2118                 return rc;
2119
2120         if ((iwl_queue_space(q) < q->high_mark)
2121             && priv->mac80211_registered) {
2122                 if (wait_write_ptr) {
2123                         spin_lock_irqsave(&priv->lock, flags);
2124                         txq->need_update = 1;
2125                         iwl_txq_update_write_ptr(priv, txq);
2126                         spin_unlock_irqrestore(&priv->lock, flags);
2127                 }
2128
2129                 ieee80211_stop_queue(priv->hw, skb_get_queue_mapping(skb));
2130         }
2131
2132         return 0;
2133
2134 drop_unlock:
2135         spin_unlock_irqrestore(&priv->lock, flags);
2136 drop:
2137         return -1;
2138 }
2139
2140 static void iwl3945_set_rate(struct iwl_priv *priv)
2141 {
2142         const struct ieee80211_supported_band *sband = NULL;
2143         struct ieee80211_rate *rate;
2144         int i;
2145
2146         sband = iwl_get_hw_mode(priv, priv->band);
2147         if (!sband) {
2148                 IWL_ERR(priv, "Failed to set rate: unable to get hw mode\n");
2149                 return;
2150         }
2151
2152         priv->active_rate = 0;
2153         priv->active_rate_basic = 0;
2154
2155         IWL_DEBUG_RATE("Setting rates for %s GHz\n",
2156                        sband->band == IEEE80211_BAND_2GHZ ? "2.4" : "5");
2157
2158         for (i = 0; i < sband->n_bitrates; i++) {
2159                 rate = &sband->bitrates[i];
2160                 if ((rate->hw_value < IWL_RATE_COUNT) &&
2161                     !(rate->flags & IEEE80211_CHAN_DISABLED)) {
2162                         IWL_DEBUG_RATE("Adding rate index %d (plcp %d)\n",
2163                                        rate->hw_value, iwl3945_rates[rate->hw_value].plcp);
2164                         priv->active_rate |= (1 << rate->hw_value);
2165                 }
2166         }
2167
2168         IWL_DEBUG_RATE("Set active_rate = %0x, active_rate_basic = %0x\n",
2169                        priv->active_rate, priv->active_rate_basic);
2170
2171         /*
2172          * If a basic rate is configured, then use it (adding IWL_RATE_1M_MASK)
2173          * otherwise set it to the default of all CCK rates and 6, 12, 24 for
2174          * OFDM
2175          */
2176         if (priv->active_rate_basic & IWL_CCK_BASIC_RATES_MASK)
2177                 priv->staging39_rxon.cck_basic_rates =
2178                     ((priv->active_rate_basic &
2179                       IWL_CCK_RATES_MASK) >> IWL_FIRST_CCK_RATE) & 0xF;
2180         else
2181                 priv->staging39_rxon.cck_basic_rates =
2182                     (IWL_CCK_BASIC_RATES_MASK >> IWL_FIRST_CCK_RATE) & 0xF;
2183
2184         if (priv->active_rate_basic & IWL_OFDM_BASIC_RATES_MASK)
2185                 priv->staging39_rxon.ofdm_basic_rates =
2186                     ((priv->active_rate_basic &
2187                       (IWL_OFDM_BASIC_RATES_MASK | IWL_RATE_6M_MASK)) >>
2188                       IWL_FIRST_OFDM_RATE) & 0xFF;
2189         else
2190                 priv->staging39_rxon.ofdm_basic_rates =
2191                    (IWL_OFDM_BASIC_RATES_MASK >> IWL_FIRST_OFDM_RATE) & 0xFF;
2192 }
2193
2194 static void iwl3945_radio_kill_sw(struct iwl_priv *priv, int disable_radio)
2195 {
2196         unsigned long flags;
2197
2198         if (!!disable_radio == test_bit(STATUS_RF_KILL_SW, &priv->status))
2199                 return;
2200
2201         IWL_DEBUG_RF_KILL("Manual SW RF KILL set to: RADIO %s\n",
2202                           disable_radio ? "OFF" : "ON");
2203
2204         if (disable_radio) {
2205                 iwl_scan_cancel(priv);
2206                 /* FIXME: This is a workaround for AP */
2207                 if (priv->iw_mode != NL80211_IFTYPE_AP) {
2208                         spin_lock_irqsave(&priv->lock, flags);
2209                         iwl_write32(priv, CSR_UCODE_DRV_GP1_SET,
2210                                     CSR_UCODE_SW_BIT_RFKILL);
2211                         spin_unlock_irqrestore(&priv->lock, flags);
2212                         iwl_send_card_state(priv, CARD_STATE_CMD_DISABLE, 0);
2213                         set_bit(STATUS_RF_KILL_SW, &priv->status);
2214                 }
2215                 return;
2216         }
2217
2218         spin_lock_irqsave(&priv->lock, flags);
2219         iwl_write32(priv, CSR_UCODE_DRV_GP1_CLR, CSR_UCODE_SW_BIT_RFKILL);
2220
2221         clear_bit(STATUS_RF_KILL_SW, &priv->status);
2222         spin_unlock_irqrestore(&priv->lock, flags);
2223
2224         /* wake up ucode */
2225         msleep(10);
2226
2227         spin_lock_irqsave(&priv->lock, flags);
2228         iwl_read32(priv, CSR_UCODE_DRV_GP1);
2229         if (!iwl_grab_nic_access(priv))
2230                 iwl_release_nic_access(priv);
2231         spin_unlock_irqrestore(&priv->lock, flags);
2232
2233         if (test_bit(STATUS_RF_KILL_HW, &priv->status)) {
2234                 IWL_DEBUG_RF_KILL("Can not turn radio back on - "
2235                                   "disabled by HW switch\n");
2236                 return;
2237         }
2238
2239         if (priv->is_open)
2240                 queue_work(priv->workqueue, &priv->restart);
2241         return;
2242 }
2243
2244 void iwl3945_set_decrypted_flag(struct iwl_priv *priv, struct sk_buff *skb,
2245                             u32 decrypt_res, struct ieee80211_rx_status *stats)
2246 {
2247         u16 fc =
2248             le16_to_cpu(((struct ieee80211_hdr *)skb->data)->frame_control);
2249
2250         if (priv->active39_rxon.filter_flags & RXON_FILTER_DIS_DECRYPT_MSK)
2251                 return;
2252
2253         if (!(fc & IEEE80211_FCTL_PROTECTED))
2254                 return;
2255
2256         IWL_DEBUG_RX("decrypt_res:0x%x\n", decrypt_res);
2257         switch (decrypt_res & RX_RES_STATUS_SEC_TYPE_MSK) {
2258         case RX_RES_STATUS_SEC_TYPE_TKIP:
2259                 if ((decrypt_res & RX_RES_STATUS_DECRYPT_TYPE_MSK) ==
2260                     RX_RES_STATUS_BAD_ICV_MIC)
2261                         stats->flag |= RX_FLAG_MMIC_ERROR;
2262         case RX_RES_STATUS_SEC_TYPE_WEP:
2263         case RX_RES_STATUS_SEC_TYPE_CCMP:
2264                 if ((decrypt_res & RX_RES_STATUS_DECRYPT_TYPE_MSK) ==
2265                     RX_RES_STATUS_DECRYPT_OK) {
2266                         IWL_DEBUG_RX("hw decrypt successfully!!!\n");
2267                         stats->flag |= RX_FLAG_DECRYPTED;
2268                 }
2269                 break;
2270
2271         default:
2272                 break;
2273         }
2274 }
2275
2276 #ifdef CONFIG_IWL3945_SPECTRUM_MEASUREMENT
2277
2278 #include "iwl-spectrum.h"
2279
2280 #define BEACON_TIME_MASK_LOW    0x00FFFFFF
2281 #define BEACON_TIME_MASK_HIGH   0xFF000000
2282 #define TIME_UNIT               1024
2283
2284 /*
2285  * extended beacon time format
2286  * time in usec will be changed into a 32-bit value in 8:24 format
2287  * the high 1 byte is the beacon counts
2288  * the lower 3 bytes is the time in usec within one beacon interval
2289  */
2290
2291 static u32 iwl3945_usecs_to_beacons(u32 usec, u32 beacon_interval)
2292 {
2293         u32 quot;
2294         u32 rem;
2295         u32 interval = beacon_interval * 1024;
2296
2297         if (!interval || !usec)
2298                 return 0;
2299
2300         quot = (usec / interval) & (BEACON_TIME_MASK_HIGH >> 24);
2301         rem = (usec % interval) & BEACON_TIME_MASK_LOW;
2302
2303         return (quot << 24) + rem;
2304 }
2305
2306 /* base is usually what we get from ucode with each received frame,
2307  * the same as HW timer counter counting down
2308  */
2309
2310 static __le32 iwl3945_add_beacon_time(u32 base, u32 addon, u32 beacon_interval)
2311 {
2312         u32 base_low = base & BEACON_TIME_MASK_LOW;
2313         u32 addon_low = addon & BEACON_TIME_MASK_LOW;
2314         u32 interval = beacon_interval * TIME_UNIT;
2315         u32 res = (base & BEACON_TIME_MASK_HIGH) +
2316             (addon & BEACON_TIME_MASK_HIGH);
2317
2318         if (base_low > addon_low)
2319                 res += base_low - addon_low;
2320         else if (base_low < addon_low) {
2321                 res += interval + base_low - addon_low;
2322                 res += (1 << 24);
2323         } else
2324                 res += (1 << 24);
2325
2326         return cpu_to_le32(res);
2327 }
2328
2329 static int iwl3945_get_measurement(struct iwl_priv *priv,
2330                                struct ieee80211_measurement_params *params,
2331                                u8 type)
2332 {
2333         struct iwl_spectrum_cmd spectrum;
2334         struct iwl_rx_packet *res;
2335         struct iwl_host_cmd cmd = {
2336                 .id = REPLY_SPECTRUM_MEASUREMENT_CMD,
2337                 .data = (void *)&spectrum,
2338                 .meta.flags = CMD_WANT_SKB,
2339         };
2340         u32 add_time = le64_to_cpu(params->start_time);
2341         int rc;
2342         int spectrum_resp_status;
2343         int duration = le16_to_cpu(params->duration);
2344
2345         if (iwl3945_is_associated(priv))
2346                 add_time =
2347                     iwl3945_usecs_to_beacons(
2348                         le64_to_cpu(params->start_time) - priv->last_tsf,
2349                         le16_to_cpu(priv->rxon_timing.beacon_interval));
2350
2351         memset(&spectrum, 0, sizeof(spectrum));
2352
2353         spectrum.channel_count = cpu_to_le16(1);
2354         spectrum.flags =
2355             RXON_FLG_TSF2HOST_MSK | RXON_FLG_ANT_A_MSK | RXON_FLG_DIS_DIV_MSK;
2356         spectrum.filter_flags = MEASUREMENT_FILTER_FLAG;
2357         cmd.len = sizeof(spectrum);
2358         spectrum.len = cpu_to_le16(cmd.len - sizeof(spectrum.len));
2359
2360         if (iwl3945_is_associated(priv))
2361                 spectrum.start_time =
2362                     iwl3945_add_beacon_time(priv->last_beacon_time,
2363                                 add_time,
2364                                 le16_to_cpu(priv->rxon_timing.beacon_interval));
2365         else
2366                 spectrum.start_time = 0;
2367
2368         spectrum.channels[0].duration = cpu_to_le32(duration * TIME_UNIT);
2369         spectrum.channels[0].channel = params->channel;
2370         spectrum.channels[0].type = type;
2371         if (priv->active39_rxon.flags & RXON_FLG_BAND_24G_MSK)
2372                 spectrum.flags |= RXON_FLG_BAND_24G_MSK |
2373                     RXON_FLG_AUTO_DETECT_MSK | RXON_FLG_TGG_PROTECT_MSK;
2374
2375         rc = iwl_send_cmd_sync(priv, &cmd);
2376         if (rc)
2377                 return rc;
2378
2379         res = (struct iwl_rx_packet *)cmd.meta.u.skb->data;
2380         if (res->hdr.flags & IWL_CMD_FAILED_MSK) {
2381                 IWL_ERR(priv, "Bad return from REPLY_RX_ON_ASSOC command\n");
2382                 rc = -EIO;
2383         }
2384
2385         spectrum_resp_status = le16_to_cpu(res->u.spectrum.status);
2386         switch (spectrum_resp_status) {
2387         case 0:         /* Command will be handled */
2388                 if (res->u.spectrum.id != 0xff) {
2389                         IWL_DEBUG_INFO("Replaced existing measurement: %d\n",
2390                                                 res->u.spectrum.id);
2391                         priv->measurement_status &= ~MEASUREMENT_READY;
2392                 }
2393                 priv->measurement_status |= MEASUREMENT_ACTIVE;
2394                 rc = 0;
2395                 break;
2396
2397         case 1:         /* Command will not be handled */
2398                 rc = -EAGAIN;
2399                 break;
2400         }
2401
2402         dev_kfree_skb_any(cmd.meta.u.skb);
2403
2404         return rc;
2405 }
2406 #endif
2407
2408 static void iwl3945_rx_reply_alive(struct iwl_priv *priv,
2409                                struct iwl_rx_mem_buffer *rxb)
2410 {
2411         struct iwl_rx_packet *pkt = (void *)rxb->skb->data;
2412         struct iwl_alive_resp *palive;
2413         struct delayed_work *pwork;
2414
2415         palive = &pkt->u.alive_frame;
2416
2417         IWL_DEBUG_INFO("Alive ucode status 0x%08X revision "
2418                        "0x%01X 0x%01X\n",
2419                        palive->is_valid, palive->ver_type,
2420                        palive->ver_subtype);
2421
2422         if (palive->ver_subtype == INITIALIZE_SUBTYPE) {
2423                 IWL_DEBUG_INFO("Initialization Alive received.\n");
2424                 memcpy(&priv->card_alive_init, &pkt->u.alive_frame,
2425                        sizeof(struct iwl_alive_resp));
2426                 pwork = &priv->init_alive_start;
2427         } else {
2428                 IWL_DEBUG_INFO("Runtime Alive received.\n");
2429                 memcpy(&priv->card_alive, &pkt->u.alive_frame,
2430                        sizeof(struct iwl_alive_resp));
2431                 pwork = &priv->alive_start;
2432                 iwl3945_disable_events(priv);
2433         }
2434
2435         /* We delay the ALIVE response by 5ms to
2436          * give the HW RF Kill time to activate... */
2437         if (palive->is_valid == UCODE_VALID_OK)
2438                 queue_delayed_work(priv->workqueue, pwork,
2439                                    msecs_to_jiffies(5));
2440         else
2441                 IWL_WARN(priv, "uCode did not respond OK.\n");
2442 }
2443
2444 static void iwl3945_rx_reply_add_sta(struct iwl_priv *priv,
2445                                  struct iwl_rx_mem_buffer *rxb)
2446 {
2447 #ifdef CONFIG_IWLWIFI_DEBUG
2448         struct iwl_rx_packet *pkt = (void *)rxb->skb->data;
2449 #endif
2450
2451         IWL_DEBUG_RX("Received REPLY_ADD_STA: 0x%02X\n", pkt->u.status);
2452         return;
2453 }
2454
2455 static void iwl3945_rx_reply_error(struct iwl_priv *priv,
2456                                struct iwl_rx_mem_buffer *rxb)
2457 {
2458         struct iwl_rx_packet *pkt = (void *)rxb->skb->data;
2459
2460         IWL_ERR(priv, "Error Reply type 0x%08X cmd %s (0x%02X) "
2461                 "seq 0x%04X ser 0x%08X\n",
2462                 le32_to_cpu(pkt->u.err_resp.error_type),
2463                 get_cmd_string(pkt->u.err_resp.cmd_id),
2464                 pkt->u.err_resp.cmd_id,
2465                 le16_to_cpu(pkt->u.err_resp.bad_cmd_seq_num),
2466                 le32_to_cpu(pkt->u.err_resp.error_info));
2467 }
2468
2469 #define TX_STATUS_ENTRY(x) case TX_STATUS_FAIL_ ## x: return #x
2470
2471 static void iwl3945_rx_csa(struct iwl_priv *priv, struct iwl_rx_mem_buffer *rxb)
2472 {
2473         struct iwl_rx_packet *pkt = (void *)rxb->skb->data;
2474         struct iwl3945_rxon_cmd *rxon = (void *)&priv->active39_rxon;
2475         struct iwl_csa_notification *csa = &(pkt->u.csa_notif);
2476         IWL_DEBUG_11H("CSA notif: channel %d, status %d\n",
2477                       le16_to_cpu(csa->channel), le32_to_cpu(csa->status));
2478         rxon->channel = csa->channel;
2479         priv->staging39_rxon.channel = csa->channel;
2480 }
2481
2482 static void iwl3945_rx_spectrum_measure_notif(struct iwl_priv *priv,
2483                                           struct iwl_rx_mem_buffer *rxb)
2484 {
2485 #ifdef CONFIG_IWL3945_SPECTRUM_MEASUREMENT
2486         struct iwl_rx_packet *pkt = (void *)rxb->skb->data;
2487         struct iwl_spectrum_notification *report = &(pkt->u.spectrum_notif);
2488
2489         if (!report->state) {
2490                 IWL_DEBUG(IWL_DL_11H | IWL_DL_INFO,
2491                           "Spectrum Measure Notification: Start\n");
2492                 return;
2493         }
2494
2495         memcpy(&priv->measure_report, report, sizeof(*report));
2496         priv->measurement_status |= MEASUREMENT_READY;
2497 #endif
2498 }
2499
2500 static void iwl3945_rx_pm_sleep_notif(struct iwl_priv *priv,
2501                                   struct iwl_rx_mem_buffer *rxb)
2502 {
2503 #ifdef CONFIG_IWL3945_DEBUG
2504         struct iwl_rx_packet *pkt = (void *)rxb->skb->data;
2505         struct iwl_sleep_notification *sleep = &(pkt->u.sleep_notif);
2506         IWL_DEBUG_RX("sleep mode: %d, src: %d\n",
2507                      sleep->pm_sleep_mode, sleep->pm_wakeup_src);
2508 #endif
2509 }
2510
2511 static void iwl3945_rx_pm_debug_statistics_notif(struct iwl_priv *priv,
2512                                              struct iwl_rx_mem_buffer *rxb)
2513 {
2514         struct iwl_rx_packet *pkt = (void *)rxb->skb->data;
2515         IWL_DEBUG_RADIO("Dumping %d bytes of unhandled "
2516                         "notification for %s:\n",
2517                         le32_to_cpu(pkt->len), get_cmd_string(pkt->hdr.cmd));
2518         iwl_print_hex_dump(priv, IWL_DL_RADIO, pkt->u.raw,
2519                            le32_to_cpu(pkt->len));
2520 }
2521
2522 static void iwl3945_bg_beacon_update(struct work_struct *work)
2523 {
2524         struct iwl_priv *priv =
2525                 container_of(work, struct iwl_priv, beacon_update);
2526         struct sk_buff *beacon;
2527
2528         /* Pull updated AP beacon from mac80211. will fail if not in AP mode */
2529         beacon = ieee80211_beacon_get(priv->hw, priv->vif);
2530
2531         if (!beacon) {
2532                 IWL_ERR(priv, "update beacon failed\n");
2533                 return;
2534         }
2535
2536         mutex_lock(&priv->mutex);
2537         /* new beacon skb is allocated every time; dispose previous.*/
2538         if (priv->ibss_beacon)
2539                 dev_kfree_skb(priv->ibss_beacon);
2540
2541         priv->ibss_beacon = beacon;
2542         mutex_unlock(&priv->mutex);
2543
2544         iwl3945_send_beacon_cmd(priv);
2545 }
2546
2547 static void iwl3945_rx_beacon_notif(struct iwl_priv *priv,
2548                                 struct iwl_rx_mem_buffer *rxb)
2549 {
2550 #ifdef CONFIG_IWL3945_DEBUG
2551         struct iwl_rx_packet *pkt = (void *)rxb->skb->data;
2552         struct iwl3945_beacon_notif *beacon = &(pkt->u.beacon_status);
2553         u8 rate = beacon->beacon_notify_hdr.rate;
2554
2555         IWL_DEBUG_RX("beacon status %x retries %d iss %d "
2556                 "tsf %d %d rate %d\n",
2557                 le32_to_cpu(beacon->beacon_notify_hdr.status) & TX_STATUS_MSK,
2558                 beacon->beacon_notify_hdr.failure_frame,
2559                 le32_to_cpu(beacon->ibss_mgr_status),
2560                 le32_to_cpu(beacon->high_tsf),
2561                 le32_to_cpu(beacon->low_tsf), rate);
2562 #endif
2563
2564         if ((priv->iw_mode == NL80211_IFTYPE_AP) &&
2565             (!test_bit(STATUS_EXIT_PENDING, &priv->status)))
2566                 queue_work(priv->workqueue, &priv->beacon_update);
2567 }
2568
2569 /* Service response to REPLY_SCAN_CMD (0x80) */
2570 static void iwl3945_rx_reply_scan(struct iwl_priv *priv,
2571                               struct iwl_rx_mem_buffer *rxb)
2572 {
2573 #ifdef CONFIG_IWL3945_DEBUG
2574         struct iwl_rx_packet *pkt = (void *)rxb->skb->data;
2575         struct iwl_scanreq_notification *notif =
2576             (struct iwl_scanreq_notification *)pkt->u.raw;
2577
2578         IWL_DEBUG_RX("Scan request status = 0x%x\n", notif->status);
2579 #endif
2580 }
2581
2582 /* Service SCAN_START_NOTIFICATION (0x82) */
2583 static void iwl3945_rx_scan_start_notif(struct iwl_priv *priv,
2584                                     struct iwl_rx_mem_buffer *rxb)
2585 {
2586         struct iwl_rx_packet *pkt = (void *)rxb->skb->data;
2587         struct iwl_scanstart_notification *notif =
2588             (struct iwl_scanstart_notification *)pkt->u.raw;
2589         priv->scan_start_tsf = le32_to_cpu(notif->tsf_low);
2590         IWL_DEBUG_SCAN("Scan start: "
2591                        "%d [802.11%s] "
2592                        "(TSF: 0x%08X:%08X) - %d (beacon timer %u)\n",
2593                        notif->channel,
2594                        notif->band ? "bg" : "a",
2595                        notif->tsf_high,
2596                        notif->tsf_low, notif->status, notif->beacon_timer);
2597 }
2598
2599 /* Service SCAN_RESULTS_NOTIFICATION (0x83) */
2600 static void iwl3945_rx_scan_results_notif(struct iwl_priv *priv,
2601                                       struct iwl_rx_mem_buffer *rxb)
2602 {
2603 #ifdef CONFIG_IWLWIFI_DEBUG
2604         struct iwl_rx_packet *pkt = (void *)rxb->skb->data;
2605         struct iwl_scanresults_notification *notif =
2606             (struct iwl_scanresults_notification *)pkt->u.raw;
2607 #endif
2608
2609         IWL_DEBUG_SCAN("Scan ch.res: "
2610                        "%d [802.11%s] "
2611                        "(TSF: 0x%08X:%08X) - %d "
2612                        "elapsed=%lu usec (%dms since last)\n",
2613                        notif->channel,
2614                        notif->band ? "bg" : "a",
2615                        le32_to_cpu(notif->tsf_high),
2616                        le32_to_cpu(notif->tsf_low),
2617                        le32_to_cpu(notif->statistics[0]),
2618                        le32_to_cpu(notif->tsf_low) - priv->scan_start_tsf,
2619                        jiffies_to_msecs(elapsed_jiffies
2620                                         (priv->last_scan_jiffies, jiffies)));
2621
2622         priv->last_scan_jiffies = jiffies;
2623         priv->next_scan_jiffies = 0;
2624 }
2625
2626 /* Service SCAN_COMPLETE_NOTIFICATION (0x84) */
2627 static void iwl3945_rx_scan_complete_notif(struct iwl_priv *priv,
2628                                        struct iwl_rx_mem_buffer *rxb)
2629 {
2630 #ifdef CONFIG_IWLWIFI_DEBUG
2631         struct iwl_rx_packet *pkt = (void *)rxb->skb->data;
2632         struct iwl_scancomplete_notification *scan_notif = (void *)pkt->u.raw;
2633 #endif
2634
2635         IWL_DEBUG_SCAN("Scan complete: %d channels (TSF 0x%08X:%08X) - %d\n",
2636                        scan_notif->scanned_channels,
2637                        scan_notif->tsf_low,
2638                        scan_notif->tsf_high, scan_notif->status);
2639
2640         /* The HW is no longer scanning */
2641         clear_bit(STATUS_SCAN_HW, &priv->status);
2642
2643         /* The scan completion notification came in, so kill that timer... */
2644         cancel_delayed_work(&priv->scan_check);
2645
2646         IWL_DEBUG_INFO("Scan pass on %sGHz took %dms\n",
2647                        (priv->scan_bands & BIT(IEEE80211_BAND_2GHZ)) ?
2648                                                         "2.4" : "5.2",
2649                        jiffies_to_msecs(elapsed_jiffies
2650                                         (priv->scan_pass_start, jiffies)));
2651
2652         /* Remove this scanned band from the list of pending
2653          * bands to scan, band G precedes A in order of scanning
2654          * as seen in iwl3945_bg_request_scan */
2655         if (priv->scan_bands & BIT(IEEE80211_BAND_2GHZ))
2656                 priv->scan_bands &= ~BIT(IEEE80211_BAND_2GHZ);
2657         else if (priv->scan_bands &  BIT(IEEE80211_BAND_5GHZ))
2658                 priv->scan_bands &= ~BIT(IEEE80211_BAND_5GHZ);
2659
2660         /* If a request to abort was given, or the scan did not succeed
2661          * then we reset the scan state machine and terminate,
2662          * re-queuing another scan if one has been requested */
2663         if (test_bit(STATUS_SCAN_ABORTING, &priv->status)) {
2664                 IWL_DEBUG_INFO("Aborted scan completed.\n");
2665                 clear_bit(STATUS_SCAN_ABORTING, &priv->status);
2666         } else {
2667                 /* If there are more bands on this scan pass reschedule */
2668                 if (priv->scan_bands > 0)
2669                         goto reschedule;
2670         }
2671
2672         priv->last_scan_jiffies = jiffies;
2673         priv->next_scan_jiffies = 0;
2674         IWL_DEBUG_INFO("Setting scan to off\n");
2675
2676         clear_bit(STATUS_SCANNING, &priv->status);
2677
2678         IWL_DEBUG_INFO("Scan took %dms\n",
2679                 jiffies_to_msecs(elapsed_jiffies(priv->scan_start, jiffies)));
2680
2681         queue_work(priv->workqueue, &priv->scan_completed);
2682
2683         return;
2684
2685 reschedule:
2686         priv->scan_pass_start = jiffies;
2687         queue_work(priv->workqueue, &priv->request_scan);
2688 }
2689
2690 /* Handle notification from uCode that card's power state is changing
2691  * due to software, hardware, or critical temperature RFKILL */
2692 static void iwl3945_rx_card_state_notif(struct iwl_priv *priv,
2693                                     struct iwl_rx_mem_buffer *rxb)
2694 {
2695         struct iwl_rx_packet *pkt = (void *)rxb->skb->data;
2696         u32 flags = le32_to_cpu(pkt->u.card_state_notif.flags);
2697         unsigned long status = priv->status;
2698
2699         IWL_DEBUG_RF_KILL("Card state received: HW:%s SW:%s\n",
2700                           (flags & HW_CARD_DISABLED) ? "Kill" : "On",
2701                           (flags & SW_CARD_DISABLED) ? "Kill" : "On");
2702
2703         iwl_write32(priv, CSR_UCODE_DRV_GP1_SET,
2704                     CSR_UCODE_DRV_GP1_BIT_CMD_BLOCKED);
2705
2706         if (flags & HW_CARD_DISABLED)
2707                 set_bit(STATUS_RF_KILL_HW, &priv->status);
2708         else
2709                 clear_bit(STATUS_RF_KILL_HW, &priv->status);
2710
2711
2712         if (flags & SW_CARD_DISABLED)
2713                 set_bit(STATUS_RF_KILL_SW, &priv->status);
2714         else
2715                 clear_bit(STATUS_RF_KILL_SW, &priv->status);
2716
2717         iwl_scan_cancel(priv);
2718
2719         if ((test_bit(STATUS_RF_KILL_HW, &status) !=
2720              test_bit(STATUS_RF_KILL_HW, &priv->status)) ||
2721             (test_bit(STATUS_RF_KILL_SW, &status) !=
2722              test_bit(STATUS_RF_KILL_SW, &priv->status)))
2723                 queue_work(priv->workqueue, &priv->rf_kill);
2724         else
2725                 wake_up_interruptible(&priv->wait_command_queue);
2726 }
2727
2728 /**
2729  * iwl3945_setup_rx_handlers - Initialize Rx handler callbacks
2730  *
2731  * Setup the RX handlers for each of the reply types sent from the uCode
2732  * to the host.
2733  *
2734  * This function chains into the hardware specific files for them to setup
2735  * any hardware specific handlers as well.
2736  */
2737 static void iwl3945_setup_rx_handlers(struct iwl_priv *priv)
2738 {
2739         priv->rx_handlers[REPLY_ALIVE] = iwl3945_rx_reply_alive;
2740         priv->rx_handlers[REPLY_ADD_STA] = iwl3945_rx_reply_add_sta;
2741         priv->rx_handlers[REPLY_ERROR] = iwl3945_rx_reply_error;
2742         priv->rx_handlers[CHANNEL_SWITCH_NOTIFICATION] = iwl3945_rx_csa;
2743         priv->rx_handlers[SPECTRUM_MEASURE_NOTIFICATION] =
2744             iwl3945_rx_spectrum_measure_notif;
2745         priv->rx_handlers[PM_SLEEP_NOTIFICATION] = iwl3945_rx_pm_sleep_notif;
2746         priv->rx_handlers[PM_DEBUG_STATISTIC_NOTIFIC] =
2747             iwl3945_rx_pm_debug_statistics_notif;
2748         priv->rx_handlers[BEACON_NOTIFICATION] = iwl3945_rx_beacon_notif;
2749
2750         /*
2751          * The same handler is used for both the REPLY to a discrete
2752          * statistics request from the host as well as for the periodic
2753          * statistics notifications (after received beacons) from the uCode.
2754          */
2755         priv->rx_handlers[REPLY_STATISTICS_CMD] = iwl3945_hw_rx_statistics;
2756         priv->rx_handlers[STATISTICS_NOTIFICATION] = iwl3945_hw_rx_statistics;
2757
2758         priv->rx_handlers[REPLY_SCAN_CMD] = iwl3945_rx_reply_scan;
2759         priv->rx_handlers[SCAN_START_NOTIFICATION] = iwl3945_rx_scan_start_notif;
2760         priv->rx_handlers[SCAN_RESULTS_NOTIFICATION] =
2761             iwl3945_rx_scan_results_notif;
2762         priv->rx_handlers[SCAN_COMPLETE_NOTIFICATION] =
2763             iwl3945_rx_scan_complete_notif;
2764         priv->rx_handlers[CARD_STATE_NOTIFICATION] = iwl3945_rx_card_state_notif;
2765
2766         /* Set up hardware specific Rx handlers */
2767         iwl3945_hw_rx_handler_setup(priv);
2768 }
2769
2770 /**
2771  * iwl3945_cmd_queue_reclaim - Reclaim CMD queue entries
2772  * When FW advances 'R' index, all entries between old and new 'R' index
2773  * need to be reclaimed.
2774  */
2775 static void iwl3945_cmd_queue_reclaim(struct iwl_priv *priv,
2776                                       int txq_id, int index)
2777 {
2778         struct iwl_tx_queue *txq = &priv->txq[txq_id];
2779         struct iwl_queue *q = &txq->q;
2780         int nfreed = 0;
2781
2782         if ((index >= q->n_bd) || (iwl_queue_used(q, index) == 0)) {
2783                 IWL_ERR(priv, "Read index for DMA queue txq id (%d), index %d, "
2784                           "is out of range [0-%d] %d %d.\n", txq_id,
2785                           index, q->n_bd, q->write_ptr, q->read_ptr);
2786                 return;
2787         }
2788
2789         for (index = iwl_queue_inc_wrap(index, q->n_bd); q->read_ptr != index;
2790                 q->read_ptr = iwl_queue_inc_wrap(q->read_ptr, q->n_bd)) {
2791                 if (nfreed > 1) {
2792                         IWL_ERR(priv, "HCMD skipped: index (%d) %d %d\n", index,
2793                                         q->write_ptr, q->read_ptr);
2794                         queue_work(priv->workqueue, &priv->restart);
2795                         break;
2796                 }
2797                 nfreed++;
2798         }
2799 }
2800
2801
2802 /**
2803  * iwl3945_tx_cmd_complete - Pull unused buffers off the queue and reclaim them
2804  * @rxb: Rx buffer to reclaim
2805  *
2806  * If an Rx buffer has an async callback associated with it the callback
2807  * will be executed.  The attached skb (if present) will only be freed
2808  * if the callback returns 1
2809  */
2810 static void iwl3945_tx_cmd_complete(struct iwl_priv *priv,
2811                                 struct iwl_rx_mem_buffer *rxb)
2812 {
2813         struct iwl_rx_packet *pkt = (struct iwl_rx_packet *)rxb->skb->data;
2814         u16 sequence = le16_to_cpu(pkt->hdr.sequence);
2815         int txq_id = SEQ_TO_QUEUE(sequence);
2816         int index = SEQ_TO_INDEX(sequence);
2817         int huge =  !!(pkt->hdr.sequence & SEQ_HUGE_FRAME);
2818         int cmd_index;
2819         struct iwl_cmd *cmd;
2820
2821         if (WARN(txq_id != IWL_CMD_QUEUE_NUM,
2822                  "wrong command queue %d, sequence 0x%X readp=%d writep=%d\n",
2823                   txq_id, sequence,
2824                   priv->txq[IWL_CMD_QUEUE_NUM].q.read_ptr,
2825                   priv->txq[IWL_CMD_QUEUE_NUM].q.write_ptr)) {
2826                 iwl_print_hex_dump(priv, IWL_DL_INFO , rxb, 32);
2827                 return;
2828         }
2829
2830         cmd_index = get_cmd_index(&priv->txq[IWL_CMD_QUEUE_NUM].q, index, huge);
2831         cmd = priv->txq[IWL_CMD_QUEUE_NUM].cmd[cmd_index];
2832
2833         /* Input error checking is done when commands are added to queue. */
2834         if (cmd->meta.flags & CMD_WANT_SKB) {
2835                 cmd->meta.source->u.skb = rxb->skb;
2836                 rxb->skb = NULL;
2837         } else if (cmd->meta.u.callback &&
2838                    !cmd->meta.u.callback(priv, cmd, rxb->skb))
2839                 rxb->skb = NULL;
2840
2841         iwl3945_cmd_queue_reclaim(priv, txq_id, index);
2842
2843         if (!(cmd->meta.flags & CMD_ASYNC)) {
2844                 clear_bit(STATUS_HCMD_ACTIVE, &priv->status);
2845                 wake_up_interruptible(&priv->wait_command_queue);
2846         }
2847 }
2848
2849 /************************** RX-FUNCTIONS ****************************/
2850 /*
2851  * Rx theory of operation
2852  *
2853  * The host allocates 32 DMA target addresses and passes the host address
2854  * to the firmware at register IWL_RFDS_TABLE_LOWER + N * RFD_SIZE where N is
2855  * 0 to 31
2856  *
2857  * Rx Queue Indexes
2858  * The host/firmware share two index registers for managing the Rx buffers.
2859  *
2860  * The READ index maps to the first position that the firmware may be writing
2861  * to -- the driver can read up to (but not including) this position and get
2862  * good data.
2863  * The READ index is managed by the firmware once the card is enabled.
2864  *
2865  * The WRITE index maps to the last position the driver has read from -- the
2866  * position preceding WRITE is the last slot the firmware can place a packet.
2867  *
2868  * The queue is empty (no good data) if WRITE = READ - 1, and is full if
2869  * WRITE = READ.
2870  *
2871  * During initialization, the host sets up the READ queue position to the first
2872  * INDEX position, and WRITE to the last (READ - 1 wrapped)
2873  *
2874  * When the firmware places a packet in a buffer, it will advance the READ index
2875  * and fire the RX interrupt.  The driver can then query the READ index and
2876  * process as many packets as possible, moving the WRITE index forward as it
2877  * resets the Rx queue buffers with new memory.
2878  *
2879  * The management in the driver is as follows:
2880  * + A list of pre-allocated SKBs is stored in iwl->rxq->rx_free.  When
2881  *   iwl->rxq->free_count drops to or below RX_LOW_WATERMARK, work is scheduled
2882  *   to replenish the iwl->rxq->rx_free.
2883  * + In iwl3945_rx_replenish (scheduled) if 'processed' != 'read' then the
2884  *   iwl->rxq is replenished and the READ INDEX is updated (updating the
2885  *   'processed' and 'read' driver indexes as well)
2886  * + A received packet is processed and handed to the kernel network stack,
2887  *   detached from the iwl->rxq.  The driver 'processed' index is updated.
2888  * + The Host/Firmware iwl->rxq is replenished at tasklet time from the rx_free
2889  *   list. If there are no allocated buffers in iwl->rxq->rx_free, the READ
2890  *   INDEX is not incremented and iwl->status(RX_STALLED) is set.  If there
2891  *   were enough free buffers and RX_STALLED is set it is cleared.
2892  *
2893  *
2894  * Driver sequence:
2895  *
2896  * iwl3945_rx_replenish()     Replenishes rx_free list from rx_used, and calls
2897  *                            iwl3945_rx_queue_restock
2898  * iwl3945_rx_queue_restock() Moves available buffers from rx_free into Rx
2899  *                            queue, updates firmware pointers, and updates
2900  *                            the WRITE index.  If insufficient rx_free buffers
2901  *                            are available, schedules iwl3945_rx_replenish
2902  *
2903  * -- enable interrupts --
2904  * ISR - iwl3945_rx()         Detach iwl_rx_mem_buffers from pool up to the
2905  *                            READ INDEX, detaching the SKB from the pool.
2906  *                            Moves the packet buffer from queue to rx_used.
2907  *                            Calls iwl3945_rx_queue_restock to refill any empty
2908  *                            slots.
2909  * ...
2910  *
2911  */
2912
2913 /**
2914  * iwl3945_dma_addr2rbd_ptr - convert a DMA address to a uCode read buffer ptr
2915  */
2916 static inline __le32 iwl3945_dma_addr2rbd_ptr(struct iwl_priv *priv,
2917                                           dma_addr_t dma_addr)
2918 {
2919         return cpu_to_le32((u32)dma_addr);
2920 }
2921
2922 /**
2923  * iwl3945_rx_queue_restock - refill RX queue from pre-allocated pool
2924  *
2925  * If there are slots in the RX queue that need to be restocked,
2926  * and we have free pre-allocated buffers, fill the ranks as much
2927  * as we can, pulling from rx_free.
2928  *
2929  * This moves the 'write' index forward to catch up with 'processed', and
2930  * also updates the memory address in the firmware to reference the new
2931  * target buffer.
2932  */
2933 static int iwl3945_rx_queue_restock(struct iwl_priv *priv)
2934 {
2935         struct iwl_rx_queue *rxq = &priv->rxq;
2936         struct list_head *element;
2937         struct iwl_rx_mem_buffer *rxb;
2938         unsigned long flags;
2939         int write, rc;
2940
2941         spin_lock_irqsave(&rxq->lock, flags);
2942         write = rxq->write & ~0x7;
2943         while ((iwl_rx_queue_space(rxq) > 0) && (rxq->free_count)) {
2944                 /* Get next free Rx buffer, remove from free list */
2945                 element = rxq->rx_free.next;
2946                 rxb = list_entry(element, struct iwl_rx_mem_buffer, list);
2947                 list_del(element);
2948
2949                 /* Point to Rx buffer via next RBD in circular buffer */
2950                 rxq->bd[rxq->write] = iwl3945_dma_addr2rbd_ptr(priv, rxb->real_dma_addr);
2951                 rxq->queue[rxq->write] = rxb;
2952                 rxq->write = (rxq->write + 1) & RX_QUEUE_MASK;
2953                 rxq->free_count--;
2954         }
2955         spin_unlock_irqrestore(&rxq->lock, flags);
2956         /* If the pre-allocated buffer pool is dropping low, schedule to
2957          * refill it */
2958         if (rxq->free_count <= RX_LOW_WATERMARK)
2959                 queue_work(priv->workqueue, &priv->rx_replenish);
2960
2961
2962         /* If we've added more space for the firmware to place data, tell it.
2963          * Increment device's write pointer in multiples of 8. */
2964         if ((write != (rxq->write & ~0x7))
2965             || (abs(rxq->write - rxq->read) > 7)) {
2966                 spin_lock_irqsave(&rxq->lock, flags);
2967                 rxq->need_update = 1;
2968                 spin_unlock_irqrestore(&rxq->lock, flags);
2969                 rc = iwl_rx_queue_update_write_ptr(priv, rxq);
2970                 if (rc)
2971                         return rc;
2972         }
2973
2974         return 0;
2975 }
2976
2977 /**
2978  * iwl3945_rx_replenish - Move all used packet from rx_used to rx_free
2979  *
2980  * When moving to rx_free an SKB is allocated for the slot.
2981  *
2982  * Also restock the Rx queue via iwl3945_rx_queue_restock.
2983  * This is called as a scheduled work item (except for during initialization)
2984  */
2985 static void iwl3945_rx_allocate(struct iwl_priv *priv)
2986 {
2987         struct iwl_rx_queue *rxq = &priv->rxq;
2988         struct list_head *element;
2989         struct iwl_rx_mem_buffer *rxb;
2990         unsigned long flags;
2991         spin_lock_irqsave(&rxq->lock, flags);
2992         while (!list_empty(&rxq->rx_used)) {
2993                 element = rxq->rx_used.next;
2994                 rxb = list_entry(element, struct iwl_rx_mem_buffer, list);
2995
2996                 /* Alloc a new receive buffer */
2997                 rxb->skb =
2998                     alloc_skb(priv->hw_params.rx_buf_size,
2999                                 __GFP_NOWARN | GFP_ATOMIC);
3000                 if (!rxb->skb) {
3001                         if (net_ratelimit())
3002                                 IWL_CRIT(priv, ": Can not allocate SKB buffers\n");
3003                         /* We don't reschedule replenish work here -- we will
3004                          * call the restock method and if it still needs
3005                          * more buffers it will schedule replenish */
3006                         break;
3007                 }
3008
3009                 /* If radiotap head is required, reserve some headroom here.
3010                  * The physical head count is a variable rx_stats->phy_count.
3011                  * We reserve 4 bytes here. Plus these extra bytes, the
3012                  * headroom of the physical head should be enough for the
3013                  * radiotap head that iwl3945 supported. See iwl3945_rt.
3014                  */
3015                 skb_reserve(rxb->skb, 4);
3016
3017                 priv->alloc_rxb_skb++;
3018                 list_del(element);
3019
3020                 /* Get physical address of RB/SKB */
3021                 rxb->real_dma_addr = pci_map_single(priv->pci_dev,
3022                                                 rxb->skb->data,
3023                                                 priv->hw_params.rx_buf_size,
3024                                                 PCI_DMA_FROMDEVICE);
3025                 list_add_tail(&rxb->list, &rxq->rx_free);
3026                 rxq->free_count++;
3027         }
3028         spin_unlock_irqrestore(&rxq->lock, flags);
3029 }
3030
3031 /*
3032  * this should be called while priv->lock is locked
3033  */
3034 static void __iwl3945_rx_replenish(void *data)
3035 {
3036         struct iwl_priv *priv = data;
3037
3038         iwl3945_rx_allocate(priv);
3039         iwl3945_rx_queue_restock(priv);
3040 }
3041
3042
3043 void iwl3945_rx_replenish(void *data)
3044 {
3045         struct iwl_priv *priv = data;
3046         unsigned long flags;
3047
3048         iwl3945_rx_allocate(priv);
3049
3050         spin_lock_irqsave(&priv->lock, flags);
3051         iwl3945_rx_queue_restock(priv);
3052         spin_unlock_irqrestore(&priv->lock, flags);
3053 }
3054
3055 /* Convert linear signal-to-noise ratio into dB */
3056 static u8 ratio2dB[100] = {
3057 /*       0   1   2   3   4   5   6   7   8   9 */
3058          0,  0,  6, 10, 12, 14, 16, 17, 18, 19, /* 00 - 09 */
3059         20, 21, 22, 22, 23, 23, 24, 25, 26, 26, /* 10 - 19 */
3060         26, 26, 26, 27, 27, 28, 28, 28, 29, 29, /* 20 - 29 */
3061         29, 30, 30, 30, 31, 31, 31, 31, 32, 32, /* 30 - 39 */
3062         32, 32, 32, 33, 33, 33, 33, 33, 34, 34, /* 40 - 49 */
3063         34, 34, 34, 34, 35, 35, 35, 35, 35, 35, /* 50 - 59 */
3064         36, 36, 36, 36, 36, 36, 36, 37, 37, 37, /* 60 - 69 */
3065         37, 37, 37, 37, 37, 38, 38, 38, 38, 38, /* 70 - 79 */
3066         38, 38, 38, 38, 38, 39, 39, 39, 39, 39, /* 80 - 89 */
3067         39, 39, 39, 39, 39, 40, 40, 40, 40, 40  /* 90 - 99 */
3068 };
3069
3070 /* Calculates a relative dB value from a ratio of linear
3071  *   (i.e. not dB) signal levels.
3072  * Conversion assumes that levels are voltages (20*log), not powers (10*log). */
3073 int iwl3945_calc_db_from_ratio(int sig_ratio)
3074 {
3075         /* 1000:1 or higher just report as 60 dB */
3076         if (sig_ratio >= 1000)
3077                 return 60;
3078
3079         /* 100:1 or higher, divide by 10 and use table,
3080          *   add 20 dB to make up for divide by 10 */
3081         if (sig_ratio >= 100)
3082                 return 20 + (int)ratio2dB[sig_ratio/10];
3083
3084         /* We shouldn't see this */
3085         if (sig_ratio < 1)
3086                 return 0;
3087
3088         /* Use table for ratios 1:1 - 99:1 */
3089         return (int)ratio2dB[sig_ratio];
3090 }
3091
3092 #define PERFECT_RSSI (-20) /* dBm */
3093 #define WORST_RSSI (-95)   /* dBm */
3094 #define RSSI_RANGE (PERFECT_RSSI - WORST_RSSI)
3095
3096 /* Calculate an indication of rx signal quality (a percentage, not dBm!).
3097  * See http://www.ces.clemson.edu/linux/signal_quality.shtml for info
3098  *   about formulas used below. */
3099 int iwl3945_calc_sig_qual(int rssi_dbm, int noise_dbm)
3100 {
3101         int sig_qual;
3102         int degradation = PERFECT_RSSI - rssi_dbm;
3103
3104         /* If we get a noise measurement, use signal-to-noise ratio (SNR)
3105          * as indicator; formula is (signal dbm - noise dbm).
3106          * SNR at or above 40 is a great signal (100%).
3107          * Below that, scale to fit SNR of 0 - 40 dB within 0 - 100% indicator.
3108          * Weakest usable signal is usually 10 - 15 dB SNR. */
3109         if (noise_dbm) {
3110                 if (rssi_dbm - noise_dbm >= 40)
3111                         return 100;
3112                 else if (rssi_dbm < noise_dbm)
3113                         return 0;
3114                 sig_qual = ((rssi_dbm - noise_dbm) * 5) / 2;
3115
3116         /* Else use just the signal level.
3117          * This formula is a least squares fit of data points collected and
3118          *   compared with a reference system that had a percentage (%) display
3119          *   for signal quality. */
3120         } else
3121                 sig_qual = (100 * (RSSI_RANGE * RSSI_RANGE) - degradation *
3122                             (15 * RSSI_RANGE + 62 * degradation)) /
3123                            (RSSI_RANGE * RSSI_RANGE);
3124
3125         if (sig_qual > 100)
3126                 sig_qual = 100;
3127         else if (sig_qual < 1)
3128                 sig_qual = 0;
3129
3130         return sig_qual;
3131 }
3132
3133 /**
3134  * iwl3945_rx_handle - Main entry function for receiving responses from uCode
3135  *
3136  * Uses the priv->rx_handlers callback function array to invoke
3137  * the appropriate handlers, including command responses,
3138  * frame-received notifications, and other notifications.
3139  */
3140 static void iwl3945_rx_handle(struct iwl_priv *priv)
3141 {
3142         struct iwl_rx_mem_buffer *rxb;
3143         struct iwl_rx_packet *pkt;
3144         struct iwl_rx_queue *rxq = &priv->rxq;
3145         u32 r, i;
3146         int reclaim;
3147         unsigned long flags;
3148         u8 fill_rx = 0;
3149         u32 count = 8;
3150
3151         /* uCode's read index (stored in shared DRAM) indicates the last Rx
3152          * buffer that the driver may process (last buffer filled by ucode). */
3153         r = le16_to_cpu(rxq->rb_stts->closed_rb_num) &  0x0FFF;
3154         i = rxq->read;
3155
3156         if (iwl_rx_queue_space(rxq) > (RX_QUEUE_SIZE / 2))
3157                 fill_rx = 1;
3158         /* Rx interrupt, but nothing sent from uCode */
3159         if (i == r)
3160                 IWL_DEBUG(IWL_DL_RX | IWL_DL_ISR, "r = %d, i = %d\n", r, i);
3161
3162         while (i != r) {
3163                 rxb = rxq->queue[i];
3164
3165                 /* If an RXB doesn't have a Rx queue slot associated with it,
3166                  * then a bug has been introduced in the queue refilling
3167                  * routines -- catch it here */
3168                 BUG_ON(rxb == NULL);
3169
3170                 rxq->queue[i] = NULL;
3171
3172                 pci_dma_sync_single_for_cpu(priv->pci_dev, rxb->real_dma_addr,
3173                                             priv->hw_params.rx_buf_size,
3174                                             PCI_DMA_FROMDEVICE);
3175                 pkt = (struct iwl_rx_packet *)rxb->skb->data;
3176
3177                 /* Reclaim a command buffer only if this packet is a response
3178                  *   to a (driver-originated) command.
3179                  * If the packet (e.g. Rx frame) originated from uCode,
3180                  *   there is no command buffer to reclaim.
3181                  * Ucode should set SEQ_RX_FRAME bit if ucode-originated,
3182                  *   but apparently a few don't get set; catch them here. */
3183                 reclaim = !(pkt->hdr.sequence & SEQ_RX_FRAME) &&
3184                         (pkt->hdr.cmd != STATISTICS_NOTIFICATION) &&
3185                         (pkt->hdr.cmd != REPLY_TX);
3186
3187                 /* Based on type of command response or notification,
3188                  *   handle those that need handling via function in
3189                  *   rx_handlers table.  See iwl3945_setup_rx_handlers() */
3190                 if (priv->rx_handlers[pkt->hdr.cmd]) {
3191                         IWL_DEBUG(IWL_DL_HCMD | IWL_DL_RX | IWL_DL_ISR,
3192                                 "r = %d, i = %d, %s, 0x%02x\n", r, i,
3193                                 get_cmd_string(pkt->hdr.cmd), pkt->hdr.cmd);
3194                         priv->rx_handlers[pkt->hdr.cmd] (priv, rxb);
3195                 } else {
3196                         /* No handling needed */
3197                         IWL_DEBUG(IWL_DL_HCMD | IWL_DL_RX | IWL_DL_ISR,
3198                                 "r %d i %d No handler needed for %s, 0x%02x\n",
3199                                 r, i, get_cmd_string(pkt->hdr.cmd),
3200                                 pkt->hdr.cmd);
3201                 }
3202
3203                 if (reclaim) {
3204                         /* Invoke any callbacks, transfer the skb to caller, and
3205                          * fire off the (possibly) blocking iwl_send_cmd()
3206                          * as we reclaim the driver command queue */
3207                         if (rxb && rxb->skb)
3208                                 iwl3945_tx_cmd_complete(priv, rxb);
3209                         else
3210                                 IWL_WARN(priv, "Claim null rxb?\n");
3211                 }
3212
3213                 /* For now we just don't re-use anything.  We can tweak this
3214                  * later to try and re-use notification packets and SKBs that
3215                  * fail to Rx correctly */
3216                 if (rxb->skb != NULL) {
3217                         priv->alloc_rxb_skb--;
3218                         dev_kfree_skb_any(rxb->skb);
3219                         rxb->skb = NULL;
3220                 }
3221
3222                 pci_unmap_single(priv->pci_dev, rxb->real_dma_addr,
3223                                 priv->hw_params.rx_buf_size,
3224                                 PCI_DMA_FROMDEVICE);
3225                 spin_lock_irqsave(&rxq->lock, flags);
3226                 list_add_tail(&rxb->list, &priv->rxq.rx_used);
3227                 spin_unlock_irqrestore(&rxq->lock, flags);
3228                 i = (i + 1) & RX_QUEUE_MASK;
3229                 /* If there are a lot of unused frames,
3230                  * restock the Rx queue so ucode won't assert. */
3231                 if (fill_rx) {
3232                         count++;
3233                         if (count >= 8) {
3234                                 priv->rxq.read = i;
3235                                 __iwl3945_rx_replenish(priv);
3236                                 count = 0;
3237                         }
3238                 }
3239         }
3240
3241         /* Backtrack one entry */
3242         priv->rxq.read = i;
3243         iwl3945_rx_queue_restock(priv);
3244 }
3245
3246 #ifdef CONFIG_IWL3945_DEBUG
3247 static void iwl3945_print_rx_config_cmd(struct iwl_priv *priv,
3248                                         struct iwl3945_rxon_cmd *rxon)
3249 {
3250         IWL_DEBUG_RADIO("RX CONFIG:\n");
3251         iwl_print_hex_dump(priv, IWL_DL_RADIO, (u8 *) rxon, sizeof(*rxon));
3252         IWL_DEBUG_RADIO("u16 channel: 0x%x\n", le16_to_cpu(rxon->channel));
3253         IWL_DEBUG_RADIO("u32 flags: 0x%08X\n", le32_to_cpu(rxon->flags));
3254         IWL_DEBUG_RADIO("u32 filter_flags: 0x%08x\n",
3255                         le32_to_cpu(rxon->filter_flags));
3256         IWL_DEBUG_RADIO("u8 dev_type: 0x%x\n", rxon->dev_type);
3257         IWL_DEBUG_RADIO("u8 ofdm_basic_rates: 0x%02x\n",
3258                         rxon->ofdm_basic_rates);
3259         IWL_DEBUG_RADIO("u8 cck_basic_rates: 0x%02x\n", rxon->cck_basic_rates);
3260         IWL_DEBUG_RADIO("u8[6] node_addr: %pM\n", rxon->node_addr);
3261         IWL_DEBUG_RADIO("u8[6] bssid_addr: %pM\n", rxon->bssid_addr);
3262         IWL_DEBUG_RADIO("u16 assoc_id: 0x%x\n", le16_to_cpu(rxon->assoc_id));
3263 }
3264 #endif
3265
3266 static void iwl3945_enable_interrupts(struct iwl_priv *priv)
3267 {
3268         IWL_DEBUG_ISR("Enabling interrupts\n");
3269         set_bit(STATUS_INT_ENABLED, &priv->status);
3270         iwl_write32(priv, CSR_INT_MASK, CSR_INI_SET_MASK);
3271 }
3272
3273
3274 /* call this function to flush any scheduled tasklet */
3275 static inline void iwl_synchronize_irq(struct iwl_priv *priv)
3276 {
3277         /* wait to make sure we flush pending tasklet*/
3278         synchronize_irq(priv->pci_dev->irq);
3279         tasklet_kill(&priv->irq_tasklet);
3280 }
3281
3282
3283 static inline void iwl3945_disable_interrupts(struct iwl_priv *priv)
3284 {
3285         clear_bit(STATUS_INT_ENABLED, &priv->status);
3286
3287         /* disable interrupts from uCode/NIC to host */
3288         iwl_write32(priv, CSR_INT_MASK, 0x00000000);
3289
3290         /* acknowledge/clear/reset any interrupts still pending
3291          * from uCode or flow handler (Rx/Tx DMA) */
3292         iwl_write32(priv, CSR_INT, 0xffffffff);
3293         iwl_write32(priv, CSR_FH_INT_STATUS, 0xffffffff);
3294         IWL_DEBUG_ISR("Disabled interrupts\n");
3295 }
3296
3297 static const char *desc_lookup(int i)
3298 {
3299         switch (i) {
3300         case 1:
3301                 return "FAIL";
3302         case 2:
3303                 return "BAD_PARAM";
3304         case 3:
3305                 return "BAD_CHECKSUM";
3306         case 4:
3307                 return "NMI_INTERRUPT";
3308         case 5:
3309                 return "SYSASSERT";
3310         case 6:
3311                 return "FATAL_ERROR";
3312         }
3313
3314         return "UNKNOWN";
3315 }
3316
3317 #define ERROR_START_OFFSET  (1 * sizeof(u32))
3318 #define ERROR_ELEM_SIZE     (7 * sizeof(u32))
3319
3320 static void iwl3945_dump_nic_error_log(struct iwl_priv *priv)
3321 {
3322         u32 i;
3323         u32 desc, time, count, base, data1;
3324         u32 blink1, blink2, ilink1, ilink2;
3325         int rc;
3326
3327         base = le32_to_cpu(priv->card_alive.error_event_table_ptr);
3328
3329         if (!iwl3945_hw_valid_rtc_data_addr(base)) {
3330                 IWL_ERR(priv, "Not valid error log pointer 0x%08X\n", base);
3331                 return;
3332         }
3333
3334         rc = iwl_grab_nic_access(priv);
3335         if (rc) {
3336                 IWL_WARN(priv, "Can not read from adapter at this time.\n");
3337                 return;
3338         }
3339
3340         count = iwl_read_targ_mem(priv, base);
3341
3342         if (ERROR_START_OFFSET <= count * ERROR_ELEM_SIZE) {
3343                 IWL_ERR(priv, "Start IWL Error Log Dump:\n");
3344                 IWL_ERR(priv, "Status: 0x%08lX, count: %d\n",
3345                         priv->status, count);
3346         }
3347
3348         IWL_ERR(priv, "Desc       Time       asrtPC  blink2 "
3349                   "ilink1  nmiPC   Line\n");
3350         for (i = ERROR_START_OFFSET;
3351              i < (count * ERROR_ELEM_SIZE) + ERROR_START_OFFSET;
3352              i += ERROR_ELEM_SIZE) {
3353                 desc = iwl_read_targ_mem(priv, base + i);
3354                 time =
3355                     iwl_read_targ_mem(priv, base + i + 1 * sizeof(u32));
3356                 blink1 =
3357                     iwl_read_targ_mem(priv, base + i + 2 * sizeof(u32));
3358                 blink2 =
3359                     iwl_read_targ_mem(priv, base + i + 3 * sizeof(u32));
3360                 ilink1 =
3361                     iwl_read_targ_mem(priv, base + i + 4 * sizeof(u32));
3362                 ilink2 =
3363                     iwl_read_targ_mem(priv, base + i + 5 * sizeof(u32));
3364                 data1 =
3365                     iwl_read_targ_mem(priv, base + i + 6 * sizeof(u32));
3366
3367                 IWL_ERR(priv,
3368                         "%-13s (#%d) %010u 0x%05X 0x%05X 0x%05X 0x%05X %u\n\n",
3369                         desc_lookup(desc), desc, time, blink1, blink2,
3370                         ilink1, ilink2, data1);
3371         }
3372
3373         iwl_release_nic_access(priv);
3374
3375 }
3376
3377 #define EVENT_START_OFFSET  (6 * sizeof(u32))
3378
3379 /**
3380  * iwl3945_print_event_log - Dump error event log to syslog
3381  *
3382  * NOTE: Must be called with iwl_grab_nic_access() already obtained!
3383  */
3384 static void iwl3945_print_event_log(struct iwl_priv *priv, u32 start_idx,
3385                                 u32 num_events, u32 mode)
3386 {
3387         u32 i;
3388         u32 base;       /* SRAM byte address of event log header */
3389         u32 event_size; /* 2 u32s, or 3 u32s if timestamp recorded */
3390         u32 ptr;        /* SRAM byte address of log data */
3391         u32 ev, time, data; /* event log data */
3392
3393         if (num_events == 0)
3394                 return;
3395
3396         base = le32_to_cpu(priv->card_alive.log_event_table_ptr);
3397
3398         if (mode == 0)
3399                 event_size = 2 * sizeof(u32);
3400         else
3401                 event_size = 3 * sizeof(u32);
3402
3403         ptr = base + EVENT_START_OFFSET + (start_idx * event_size);
3404
3405         /* "time" is actually "data" for mode 0 (no timestamp).
3406          * place event id # at far right for easier visual parsing. */
3407         for (i = 0; i < num_events; i++) {
3408                 ev = iwl_read_targ_mem(priv, ptr);
3409                 ptr += sizeof(u32);
3410                 time = iwl_read_targ_mem(priv, ptr);
3411                 ptr += sizeof(u32);
3412                 if (mode == 0) {
3413                         /* data, ev */
3414                         IWL_ERR(priv, "0x%08x\t%04u\n", time, ev);
3415                 } else {
3416                         data = iwl_read_targ_mem(priv, ptr);
3417                         ptr += sizeof(u32);
3418                         IWL_ERR(priv, "%010u\t0x%08x\t%04u\n", time, data, ev);
3419                 }
3420         }
3421 }
3422
3423 static void iwl3945_dump_nic_event_log(struct iwl_priv *priv)
3424 {
3425         int rc;
3426         u32 base;       /* SRAM byte address of event log header */
3427         u32 capacity;   /* event log capacity in # entries */
3428         u32 mode;       /* 0 - no timestamp, 1 - timestamp recorded */
3429         u32 num_wraps;  /* # times uCode wrapped to top of log */
3430         u32 next_entry; /* index of next entry to be written by uCode */
3431         u32 size;       /* # entries that we'll print */
3432
3433         base = le32_to_cpu(priv->card_alive.log_event_table_ptr);
3434         if (!iwl3945_hw_valid_rtc_data_addr(base)) {
3435                 IWL_ERR(priv, "Invalid event log pointer 0x%08X\n", base);
3436                 return;
3437         }
3438
3439         rc = iwl_grab_nic_access(priv);
3440         if (rc) {
3441                 IWL_WARN(priv, "Can not read from adapter at this time.\n");
3442                 return;
3443         }
3444
3445         /* event log header */
3446         capacity = iwl_read_targ_mem(priv, base);
3447         mode = iwl_read_targ_mem(priv, base + (1 * sizeof(u32)));
3448         num_wraps = iwl_read_targ_mem(priv, base + (2 * sizeof(u32)));
3449         next_entry = iwl_read_targ_mem(priv, base + (3 * sizeof(u32)));
3450
3451         size = num_wraps ? capacity : next_entry;
3452
3453         /* bail out if nothing in log */
3454         if (size == 0) {
3455                 IWL_ERR(priv, "Start IWL Event Log Dump: nothing in log\n");
3456                 iwl_release_nic_access(priv);
3457                 return;
3458         }
3459
3460         IWL_ERR(priv, "Start IWL Event Log Dump: display count %d, wraps %d\n",
3461                   size, num_wraps);
3462
3463         /* if uCode has wrapped back to top of log, start at the oldest entry,
3464          * i.e the next one that uCode would fill. */
3465         if (num_wraps)
3466                 iwl3945_print_event_log(priv, next_entry,
3467                                     capacity - next_entry, mode);
3468
3469         /* (then/else) start at top of log */
3470         iwl3945_print_event_log(priv, 0, next_entry, mode);
3471
3472         iwl_release_nic_access(priv);
3473 }
3474
3475 /**
3476  * iwl3945_irq_handle_error - called for HW or SW error interrupt from card
3477  */
3478 static void iwl3945_irq_handle_error(struct iwl_priv *priv)
3479 {
3480         /* Set the FW error flag -- cleared on iwl3945_down */
3481         set_bit(STATUS_FW_ERROR, &priv->status);
3482
3483         /* Cancel currently queued command. */
3484         clear_bit(STATUS_HCMD_ACTIVE, &priv->status);
3485
3486 #ifdef CONFIG_IWL3945_DEBUG
3487         if (priv->debug_level & IWL_DL_FW_ERRORS) {
3488                 iwl3945_dump_nic_error_log(priv);
3489                 iwl3945_dump_nic_event_log(priv);
3490                 iwl3945_print_rx_config_cmd(priv, &priv->staging39_rxon);
3491         }
3492 #endif
3493
3494         wake_up_interruptible(&priv->wait_command_queue);
3495
3496         /* Keep the restart process from trying to send host
3497          * commands by clearing the INIT status bit */
3498         clear_bit(STATUS_READY, &priv->status);
3499
3500         if (!test_bit(STATUS_EXIT_PENDING, &priv->status)) {
3501                 IWL_DEBUG(IWL_DL_INFO | IWL_DL_FW_ERRORS,
3502                           "Restarting adapter due to uCode error.\n");
3503
3504                 if (iwl3945_is_associated(priv)) {
3505                         memcpy(&priv->recovery39_rxon, &priv->active39_rxon,
3506                                sizeof(priv->recovery39_rxon));
3507                         priv->error_recovering = 1;
3508                 }
3509                 queue_work(priv->workqueue, &priv->restart);
3510         }
3511 }
3512
3513 static void iwl3945_error_recovery(struct iwl_priv *priv)
3514 {
3515         unsigned long flags;
3516
3517         memcpy(&priv->staging39_rxon, &priv->recovery39_rxon,
3518                sizeof(priv->staging39_rxon));
3519         priv->staging39_rxon.filter_flags &= ~RXON_FILTER_ASSOC_MSK;
3520         iwl3945_commit_rxon(priv);
3521
3522         iwl3945_add_station(priv, priv->bssid, 1, 0);
3523
3524         spin_lock_irqsave(&priv->lock, flags);
3525         priv->assoc_id = le16_to_cpu(priv->staging39_rxon.assoc_id);
3526         priv->error_recovering = 0;
3527         spin_unlock_irqrestore(&priv->lock, flags);
3528 }
3529
3530 static void iwl3945_irq_tasklet(struct iwl_priv *priv)
3531 {
3532         u32 inta, handled = 0;
3533         u32 inta_fh;
3534         unsigned long flags;
3535 #ifdef CONFIG_IWL3945_DEBUG
3536         u32 inta_mask;
3537 #endif
3538
3539         spin_lock_irqsave(&priv->lock, flags);
3540
3541         /* Ack/clear/reset pending uCode interrupts.
3542          * Note:  Some bits in CSR_INT are "OR" of bits in CSR_FH_INT_STATUS,
3543          *  and will clear only when CSR_FH_INT_STATUS gets cleared. */
3544         inta = iwl_read32(priv, CSR_INT);
3545         iwl_write32(priv, CSR_INT, inta);
3546
3547         /* Ack/clear/reset pending flow-handler (DMA) interrupts.
3548          * Any new interrupts that happen after this, either while we're
3549          * in this tasklet, or later, will show up in next ISR/tasklet. */
3550         inta_fh = iwl_read32(priv, CSR_FH_INT_STATUS);
3551         iwl_write32(priv, CSR_FH_INT_STATUS, inta_fh);
3552
3553 #ifdef CONFIG_IWL3945_DEBUG
3554         if (priv->debug_level & IWL_DL_ISR) {
3555                 /* just for debug */
3556                 inta_mask = iwl_read32(priv, CSR_INT_MASK);
3557                 IWL_DEBUG_ISR("inta 0x%08x, enabled 0x%08x, fh 0x%08x\n",
3558                               inta, inta_mask, inta_fh);
3559         }
3560 #endif
3561
3562         /* Since CSR_INT and CSR_FH_INT_STATUS reads and clears are not
3563          * atomic, make sure that inta covers all the interrupts that
3564          * we've discovered, even if FH interrupt came in just after
3565          * reading CSR_INT. */
3566         if (inta_fh & CSR39_FH_INT_RX_MASK)
3567                 inta |= CSR_INT_BIT_FH_RX;
3568         if (inta_fh & CSR39_FH_INT_TX_MASK)
3569                 inta |= CSR_INT_BIT_FH_TX;
3570
3571         /* Now service all interrupt bits discovered above. */
3572         if (inta & CSR_INT_BIT_HW_ERR) {
3573                 IWL_ERR(priv, "Microcode HW error detected.  Restarting.\n");
3574
3575                 /* Tell the device to stop sending interrupts */
3576                 iwl3945_disable_interrupts(priv);
3577
3578                 iwl3945_irq_handle_error(priv);
3579
3580                 handled |= CSR_INT_BIT_HW_ERR;
3581
3582                 spin_unlock_irqrestore(&priv->lock, flags);
3583
3584                 return;
3585         }
3586
3587 #ifdef CONFIG_IWL3945_DEBUG
3588         if (priv->debug_level & (IWL_DL_ISR)) {
3589                 /* NIC fires this, but we don't use it, redundant with WAKEUP */
3590                 if (inta & CSR_INT_BIT_SCD)
3591                         IWL_DEBUG_ISR("Scheduler finished to transmit "
3592                                       "the frame/frames.\n");
3593
3594                 /* Alive notification via Rx interrupt will do the real work */
3595                 if (inta & CSR_INT_BIT_ALIVE)
3596                         IWL_DEBUG_ISR("Alive interrupt\n");
3597         }
3598 #endif
3599         /* Safely ignore these bits for debug checks below */
3600         inta &= ~(CSR_INT_BIT_SCD | CSR_INT_BIT_ALIVE);
3601
3602         /* Error detected by uCode */
3603         if (inta & CSR_INT_BIT_SW_ERR) {
3604                 IWL_ERR(priv, "Microcode SW error detected. "
3605                         "Restarting 0x%X.\n", inta);
3606                 iwl3945_irq_handle_error(priv);
3607                 handled |= CSR_INT_BIT_SW_ERR;
3608         }
3609
3610         /* uCode wakes up after power-down sleep */
3611         if (inta & CSR_INT_BIT_WAKEUP) {
3612                 IWL_DEBUG_ISR("Wakeup interrupt\n");
3613                 iwl_rx_queue_update_write_ptr(priv, &priv->rxq);
3614                 iwl_txq_update_write_ptr(priv, &priv->txq[0]);
3615                 iwl_txq_update_write_ptr(priv, &priv->txq[1]);
3616                 iwl_txq_update_write_ptr(priv, &priv->txq[2]);
3617                 iwl_txq_update_write_ptr(priv, &priv->txq[3]);
3618                 iwl_txq_update_write_ptr(priv, &priv->txq[4]);
3619                 iwl_txq_update_write_ptr(priv, &priv->txq[5]);
3620
3621                 handled |= CSR_INT_BIT_WAKEUP;
3622         }
3623
3624         /* All uCode command responses, including Tx command responses,
3625          * Rx "responses" (frame-received notification), and other
3626          * notifications from uCode come through here*/
3627         if (inta & (CSR_INT_BIT_FH_RX | CSR_INT_BIT_SW_RX)) {
3628                 iwl3945_rx_handle(priv);
3629                 handled |= (CSR_INT_BIT_FH_RX | CSR_INT_BIT_SW_RX);
3630         }
3631
3632         if (inta & CSR_INT_BIT_FH_TX) {
3633                 IWL_DEBUG_ISR("Tx interrupt\n");
3634
3635                 iwl_write32(priv, CSR_FH_INT_STATUS, (1 << 6));
3636                 if (!iwl_grab_nic_access(priv)) {
3637                         iwl_write_direct32(priv, FH39_TCSR_CREDIT
3638                                              (FH39_SRVC_CHNL), 0x0);
3639                         iwl_release_nic_access(priv);
3640                 }
3641                 handled |= CSR_INT_BIT_FH_TX;
3642         }
3643
3644         if (inta & ~handled)
3645                 IWL_ERR(priv, "Unhandled INTA bits 0x%08x\n", inta & ~handled);
3646
3647         if (inta & ~CSR_INI_SET_MASK) {
3648                 IWL_WARN(priv, "Disabled INTA bits 0x%08x were pending\n",
3649                          inta & ~CSR_INI_SET_MASK);
3650                 IWL_WARN(priv, "   with FH_INT = 0x%08x\n", inta_fh);
3651         }
3652
3653         /* Re-enable all interrupts */
3654         /* only Re-enable if disabled by irq */
3655         if (test_bit(STATUS_INT_ENABLED, &priv->status))
3656                 iwl3945_enable_interrupts(priv);
3657
3658 #ifdef CONFIG_IWL3945_DEBUG
3659         if (priv->debug_level & (IWL_DL_ISR)) {
3660                 inta = iwl_read32(priv, CSR_INT);
3661                 inta_mask = iwl_read32(priv, CSR_INT_MASK);
3662                 inta_fh = iwl_read32(priv, CSR_FH_INT_STATUS);
3663                 IWL_DEBUG_ISR("End inta 0x%08x, enabled 0x%08x, fh 0x%08x, "
3664                         "flags 0x%08lx\n", inta, inta_mask, inta_fh, flags);
3665         }
3666 #endif
3667         spin_unlock_irqrestore(&priv->lock, flags);
3668 }
3669
3670 static irqreturn_t iwl3945_isr(int irq, void *data)
3671 {
3672         struct iwl_priv *priv = data;
3673         u32 inta, inta_mask;
3674         u32 inta_fh;
3675         if (!priv)
3676                 return IRQ_NONE;
3677
3678         spin_lock(&priv->lock);
3679
3680         /* Disable (but don't clear!) interrupts here to avoid
3681          *    back-to-back ISRs and sporadic interrupts from our NIC.
3682          * If we have something to service, the tasklet will re-enable ints.
3683          * If we *don't* have something, we'll re-enable before leaving here. */
3684         inta_mask = iwl_read32(priv, CSR_INT_MASK);  /* just for debug */
3685         iwl_write32(priv, CSR_INT_MASK, 0x00000000);
3686
3687         /* Discover which interrupts are active/pending */
3688         inta = iwl_read32(priv, CSR_INT);
3689         inta_fh = iwl_read32(priv, CSR_FH_INT_STATUS);
3690
3691         /* Ignore interrupt if there's nothing in NIC to service.
3692          * This may be due to IRQ shared with another device,
3693          * or due to sporadic interrupts thrown from our NIC. */
3694         if (!inta && !inta_fh) {
3695                 IWL_DEBUG_ISR("Ignore interrupt, inta == 0, inta_fh == 0\n");
3696                 goto none;
3697         }
3698
3699         if ((inta == 0xFFFFFFFF) || ((inta & 0xFFFFFFF0) == 0xa5a5a5a0)) {
3700                 /* Hardware disappeared */
3701                 IWL_WARN(priv, "HARDWARE GONE?? INTA == 0x%08x\n", inta);
3702                 goto unplugged;
3703         }
3704
3705         IWL_DEBUG_ISR("ISR inta 0x%08x, enabled 0x%08x, fh 0x%08x\n",
3706                       inta, inta_mask, inta_fh);
3707
3708         inta &= ~CSR_INT_BIT_SCD;
3709
3710         /* iwl3945_irq_tasklet() will service interrupts and re-enable them */
3711         if (likely(inta || inta_fh))
3712                 tasklet_schedule(&priv->irq_tasklet);
3713 unplugged:
3714         spin_unlock(&priv->lock);
3715
3716         return IRQ_HANDLED;
3717
3718  none:
3719         /* re-enable interrupts here since we don't have anything to service. */
3720         /* only Re-enable if disabled by irq */
3721         if (test_bit(STATUS_INT_ENABLED, &priv->status))
3722                 iwl3945_enable_interrupts(priv);
3723         spin_unlock(&priv->lock);
3724         return IRQ_NONE;
3725 }
3726
3727 /************************** EEPROM BANDS ****************************
3728  *
3729  * The iwl3945_eeprom_band definitions below provide the mapping from the
3730  * EEPROM contents to the specific channel number supported for each
3731  * band.
3732  *
3733  * For example, iwl3945_priv->eeprom39.band_3_channels[4] from the band_3
3734  * definition below maps to physical channel 42 in the 5.2GHz spectrum.
3735  * The specific geography and calibration information for that channel
3736  * is contained in the eeprom map itself.
3737  *
3738  * During init, we copy the eeprom information and channel map
3739  * information into priv->channel_info_24/52 and priv->channel_map_24/52
3740  *
3741  * channel_map_24/52 provides the index in the channel_info array for a
3742  * given channel.  We have to have two separate maps as there is channel
3743  * overlap with the 2.4GHz and 5.2GHz spectrum as seen in band_1 and
3744  * band_2
3745  *
3746  * A value of 0xff stored in the channel_map indicates that the channel
3747  * is not supported by the hardware at all.
3748  *
3749  * A value of 0xfe in the channel_map indicates that the channel is not
3750  * valid for Tx with the current hardware.  This means that
3751  * while the system can tune and receive on a given channel, it may not
3752  * be able to associate or transmit any frames on that
3753  * channel.  There is no corresponding channel information for that
3754  * entry.
3755  *
3756  *********************************************************************/
3757
3758 /* 2.4 GHz */
3759 static const u8 iwl3945_eeprom_band_1[14] = {
3760         1, 2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13, 14
3761 };
3762
3763 /* 5.2 GHz bands */
3764 static const u8 iwl3945_eeprom_band_2[] = {     /* 4915-5080MHz */
3765         183, 184, 185, 187, 188, 189, 192, 196, 7, 8, 11, 12, 16
3766 };
3767
3768 static const u8 iwl3945_eeprom_band_3[] = {     /* 5170-5320MHz */
3769         34, 36, 38, 40, 42, 44, 46, 48, 52, 56, 60, 64
3770 };
3771
3772 static const u8 iwl3945_eeprom_band_4[] = {     /* 5500-5700MHz */
3773         100, 104, 108, 112, 116, 120, 124, 128, 132, 136, 140
3774 };
3775
3776 static const u8 iwl3945_eeprom_band_5[] = {     /* 5725-5825MHz */
3777         145, 149, 153, 157, 161, 165
3778 };
3779
3780 static void iwl3945_init_band_reference(const struct iwl_priv *priv, int band,
3781                                     int *eeprom_ch_count,
3782                                     const struct iwl_eeprom_channel
3783                                     **eeprom_ch_info,
3784                                     const u8 **eeprom_ch_index)
3785 {
3786         switch (band) {
3787         case 1:         /* 2.4GHz band */
3788                 *eeprom_ch_count = ARRAY_SIZE(iwl3945_eeprom_band_1);
3789                 *eeprom_ch_info = priv->eeprom39.band_1_channels;
3790                 *eeprom_ch_index = iwl3945_eeprom_band_1;
3791                 break;
3792         case 2:         /* 4.9GHz band */
3793                 *eeprom_ch_count = ARRAY_SIZE(iwl3945_eeprom_band_2);
3794                 *eeprom_ch_info = priv->eeprom39.band_2_channels;
3795                 *eeprom_ch_index = iwl3945_eeprom_band_2;
3796                 break;
3797         case 3:         /* 5.2GHz band */
3798                 *eeprom_ch_count = ARRAY_SIZE(iwl3945_eeprom_band_3);
3799                 *eeprom_ch_info = priv->eeprom39.band_3_channels;
3800                 *eeprom_ch_index = iwl3945_eeprom_band_3;
3801                 break;
3802         case 4:         /* 5.5GHz band */
3803                 *eeprom_ch_count = ARRAY_SIZE(iwl3945_eeprom_band_4);
3804                 *eeprom_ch_info = priv->eeprom39.band_4_channels;
3805                 *eeprom_ch_index = iwl3945_eeprom_band_4;
3806                 break;
3807         case 5:         /* 5.7GHz band */
3808                 *eeprom_ch_count = ARRAY_SIZE(iwl3945_eeprom_band_5);
3809                 *eeprom_ch_info = priv->eeprom39.band_5_channels;
3810                 *eeprom_ch_index = iwl3945_eeprom_band_5;
3811                 break;
3812         default:
3813                 BUG();
3814                 return;
3815         }
3816 }
3817
3818 /**
3819  * iwl3945_get_channel_info - Find driver's private channel info
3820  *
3821  * Based on band and channel number.
3822  */
3823 const struct iwl_channel_info *
3824 iwl3945_get_channel_info(const struct iwl_priv *priv,
3825                          enum ieee80211_band band, u16 channel)
3826 {
3827         int i;
3828
3829         switch (band) {
3830         case IEEE80211_BAND_5GHZ:
3831                 for (i = 14; i < priv->channel_count; i++) {
3832                         if (priv->channel_info[i].channel == channel)
3833                                 return &priv->channel_info[i];
3834                 }
3835                 break;
3836
3837         case IEEE80211_BAND_2GHZ:
3838                 if (channel >= 1 && channel <= 14)
3839                         return &priv->channel_info[channel - 1];
3840                 break;
3841         case IEEE80211_NUM_BANDS:
3842                 WARN_ON(1);
3843         }
3844
3845         return NULL;
3846 }
3847
3848 #define CHECK_AND_PRINT(x) ((eeprom_ch_info[ch].flags & EEPROM_CHANNEL_##x) \
3849                             ? # x " " : "")
3850
3851 /**
3852  * iwl3945_init_channel_map - Set up driver's info for all possible channels
3853  */
3854 static int iwl3945_init_channel_map(struct iwl_priv *priv)
3855 {
3856         int eeprom_ch_count = 0;
3857         const u8 *eeprom_ch_index = NULL;
3858         const struct iwl_eeprom_channel *eeprom_ch_info = NULL;
3859         int band, ch;
3860         struct iwl_channel_info *ch_info;
3861
3862         if (priv->channel_count) {
3863                 IWL_DEBUG_INFO("Channel map already initialized.\n");
3864                 return 0;
3865         }
3866
3867         if (priv->eeprom39.version < 0x2f) {
3868                 IWL_WARN(priv, "Unsupported EEPROM version: 0x%04X\n",
3869                             priv->eeprom39.version);
3870                 return -EINVAL;
3871         }
3872
3873         IWL_DEBUG_INFO("Initializing regulatory info from EEPROM\n");
3874
3875         priv->channel_count =
3876             ARRAY_SIZE(iwl3945_eeprom_band_1) +
3877             ARRAY_SIZE(iwl3945_eeprom_band_2) +
3878             ARRAY_SIZE(iwl3945_eeprom_band_3) +
3879             ARRAY_SIZE(iwl3945_eeprom_band_4) +
3880             ARRAY_SIZE(iwl3945_eeprom_band_5);
3881
3882         IWL_DEBUG_INFO("Parsing data for %d channels.\n", priv->channel_count);
3883
3884         priv->channel_info = kzalloc(sizeof(struct iwl_channel_info) *
3885                                      priv->channel_count, GFP_KERNEL);
3886         if (!priv->channel_info) {
3887                 IWL_ERR(priv, "Could not allocate channel_info\n");
3888                 priv->channel_count = 0;
3889                 return -ENOMEM;
3890         }
3891
3892         ch_info = priv->channel_info;
3893
3894         /* Loop through the 5 EEPROM bands adding them in order to the
3895          * channel map we maintain (that contains additional information than
3896          * what just in the EEPROM) */
3897         for (band = 1; band <= 5; band++) {
3898
3899                 iwl3945_init_band_reference(priv, band, &eeprom_ch_count,
3900                                         &eeprom_ch_info, &eeprom_ch_index);
3901
3902                 /* Loop through each band adding each of the channels */
3903                 for (ch = 0; ch < eeprom_ch_count; ch++) {
3904                         ch_info->channel = eeprom_ch_index[ch];
3905                         ch_info->band = (band == 1) ? IEEE80211_BAND_2GHZ :
3906                             IEEE80211_BAND_5GHZ;
3907
3908                         /* permanently store EEPROM's channel regulatory flags
3909                          *   and max power in channel info database. */
3910                         ch_info->eeprom = eeprom_ch_info[ch];
3911
3912                         /* Copy the run-time flags so they are there even on
3913                          * invalid channels */
3914                         ch_info->flags = eeprom_ch_info[ch].flags;
3915
3916                         if (!(is_channel_valid(ch_info))) {
3917                                 IWL_DEBUG_INFO("Ch. %d Flags %x [%sGHz] - "
3918                                                "No traffic\n",
3919                                                ch_info->channel,
3920                                                ch_info->flags,
3921                                                is_channel_a_band(ch_info) ?
3922                                                "5.2" : "2.4");
3923                                 ch_info++;
3924                                 continue;
3925                         }
3926
3927                         /* Initialize regulatory-based run-time data */
3928                         ch_info->max_power_avg = ch_info->curr_txpow =
3929                             eeprom_ch_info[ch].max_power_avg;
3930                         ch_info->scan_power = eeprom_ch_info[ch].max_power_avg;
3931                         ch_info->min_power = 0;
3932
3933                         IWL_DEBUG_INFO("Ch. %d [%sGHz] %s%s%s%s%s%s(0x%02x"
3934                                        " %ddBm): Ad-Hoc %ssupported\n",
3935                                        ch_info->channel,
3936                                        is_channel_a_band(ch_info) ?
3937                                        "5.2" : "2.4",
3938                                        CHECK_AND_PRINT(VALID),
3939                                        CHECK_AND_PRINT(IBSS),
3940                                        CHECK_AND_PRINT(ACTIVE),
3941                                        CHECK_AND_PRINT(RADAR),
3942                                        CHECK_AND_PRINT(WIDE),
3943                                        CHECK_AND_PRINT(DFS),
3944                                        eeprom_ch_info[ch].flags,
3945                                        eeprom_ch_info[ch].max_power_avg,
3946                                        ((eeprom_ch_info[ch].
3947                                          flags & EEPROM_CHANNEL_IBSS)
3948                                         && !(eeprom_ch_info[ch].
3949                                              flags & EEPROM_CHANNEL_RADAR))
3950                                        ? "" : "not ");
3951
3952                         /* Set the tx_power_user_lmt to the highest power
3953                          * supported by any channel */
3954                         if (eeprom_ch_info[ch].max_power_avg >
3955                             priv->tx_power_user_lmt)
3956                                 priv->tx_power_user_lmt =
3957                                     eeprom_ch_info[ch].max_power_avg;
3958
3959                         ch_info++;
3960                 }
3961         }
3962
3963         /* Set up txpower settings in driver for all channels */
3964         if (iwl3945_txpower_set_from_eeprom(priv))
3965                 return -EIO;
3966
3967         return 0;
3968 }
3969
3970 /*
3971  * iwl3945_free_channel_map - undo allocations in iwl3945_init_channel_map
3972  */
3973 static void iwl3945_free_channel_map(struct iwl_priv *priv)
3974 {
3975         kfree(priv->channel_info);
3976         priv->channel_count = 0;
3977 }
3978
3979 /* For active scan, listen ACTIVE_DWELL_TIME (msec) on each channel after
3980  * sending probe req.  This should be set long enough to hear probe responses
3981  * from more than one AP.  */
3982 #define IWL_ACTIVE_DWELL_TIME_24    (30)        /* all times in msec */
3983 #define IWL_ACTIVE_DWELL_TIME_52    (20)
3984
3985 #define IWL_ACTIVE_DWELL_FACTOR_24GHZ (3)
3986 #define IWL_ACTIVE_DWELL_FACTOR_52GHZ (2)
3987
3988 /* For faster active scanning, scan will move to the next channel if fewer than
3989  * PLCP_QUIET_THRESH packets are heard on this channel within
3990  * ACTIVE_QUIET_TIME after sending probe request.  This shortens the dwell
3991  * time if it's a quiet channel (nothing responded to our probe, and there's
3992  * no other traffic).
3993  * Disable "quiet" feature by setting PLCP_QUIET_THRESH to 0. */
3994 #define IWL_PLCP_QUIET_THRESH       __constant_cpu_to_le16(1)   /* packets */
3995 #define IWL_ACTIVE_QUIET_TIME       __constant_cpu_to_le16(10)  /* msec */
3996
3997 /* For passive scan, listen PASSIVE_DWELL_TIME (msec) on each channel.
3998  * Must be set longer than active dwell time.
3999  * For the most reliable scan, set > AP beacon interval (typically 100msec). */
4000 #define IWL_PASSIVE_DWELL_TIME_24   (20)        /* all times in msec */
4001 #define IWL_PASSIVE_DWELL_TIME_52   (10)
4002 #define IWL_PASSIVE_DWELL_BASE      (100)
4003 #define IWL_CHANNEL_TUNE_TIME       5
4004
4005 #define IWL_SCAN_PROBE_MASK(n)   (BIT(n) | (BIT(n) - BIT(1)))
4006
4007 static inline u16 iwl3945_get_active_dwell_time(struct iwl_priv *priv,
4008                                                 enum ieee80211_band band,
4009                                                 u8 n_probes)
4010 {
4011         if (band == IEEE80211_BAND_5GHZ)
4012                 return IWL_ACTIVE_DWELL_TIME_52 +
4013                         IWL_ACTIVE_DWELL_FACTOR_52GHZ * (n_probes + 1);
4014         else
4015                 return IWL_ACTIVE_DWELL_TIME_24 +
4016                         IWL_ACTIVE_DWELL_FACTOR_24GHZ * (n_probes + 1);
4017 }
4018
4019 static u16 iwl3945_get_passive_dwell_time(struct iwl_priv *priv,
4020                                           enum ieee80211_band band)
4021 {
4022         u16 passive = (band == IEEE80211_BAND_2GHZ) ?
4023             IWL_PASSIVE_DWELL_BASE + IWL_PASSIVE_DWELL_TIME_24 :
4024             IWL_PASSIVE_DWELL_BASE + IWL_PASSIVE_DWELL_TIME_52;
4025
4026         if (iwl3945_is_associated(priv)) {
4027                 /* If we're associated, we clamp the maximum passive
4028                  * dwell time to be 98% of the beacon interval (minus
4029                  * 2 * channel tune time) */
4030                 passive = priv->beacon_int;
4031                 if ((passive > IWL_PASSIVE_DWELL_BASE) || !passive)
4032                         passive = IWL_PASSIVE_DWELL_BASE;
4033                 passive = (passive * 98) / 100 - IWL_CHANNEL_TUNE_TIME * 2;
4034         }
4035
4036         return passive;
4037 }
4038
4039 static int iwl3945_get_channels_for_scan(struct iwl_priv *priv,
4040                                          enum ieee80211_band band,
4041                                      u8 is_active, u8 n_probes,
4042                                      struct iwl3945_scan_channel *scan_ch)
4043 {
4044         const struct ieee80211_channel *channels = NULL;
4045         const struct ieee80211_supported_band *sband;
4046         const struct iwl_channel_info *ch_info;
4047         u16 passive_dwell = 0;
4048         u16 active_dwell = 0;
4049         int added, i;
4050
4051         sband = iwl_get_hw_mode(priv, band);
4052         if (!sband)
4053                 return 0;
4054
4055         channels = sband->channels;
4056
4057         active_dwell = iwl3945_get_active_dwell_time(priv, band, n_probes);
4058         passive_dwell = iwl3945_get_passive_dwell_time(priv, band);
4059
4060         if (passive_dwell <= active_dwell)
4061                 passive_dwell = active_dwell + 1;
4062
4063         for (i = 0, added = 0; i < sband->n_channels; i++) {
4064                 if (channels[i].flags & IEEE80211_CHAN_DISABLED)
4065                         continue;
4066
4067                 scan_ch->channel = channels[i].hw_value;
4068
4069                 ch_info = iwl3945_get_channel_info(priv, band, scan_ch->channel);
4070                 if (!is_channel_valid(ch_info)) {
4071                         IWL_DEBUG_SCAN("Channel %d is INVALID for this band.\n",
4072                                        scan_ch->channel);
4073                         continue;
4074                 }
4075
4076                 scan_ch->active_dwell = cpu_to_le16(active_dwell);
4077                 scan_ch->passive_dwell = cpu_to_le16(passive_dwell);
4078                 /* If passive , set up for auto-switch
4079                  *  and use long active_dwell time.
4080                  */
4081                 if (!is_active || is_channel_passive(ch_info) ||
4082                     (channels[i].flags & IEEE80211_CHAN_PASSIVE_SCAN)) {
4083                         scan_ch->type = 0;      /* passive */
4084                         if (IWL_UCODE_API(priv->ucode_ver) == 1)
4085                                 scan_ch->active_dwell = cpu_to_le16(passive_dwell - 1);
4086                 } else {
4087                         scan_ch->type = 1;      /* active */
4088                 }
4089
4090                 /* Set direct probe bits. These may be used both for active
4091                  * scan channels (probes gets sent right away),
4092                  * or for passive channels (probes get se sent only after
4093                  * hearing clear Rx packet).*/
4094                 if (IWL_UCODE_API(priv->ucode_ver) >= 2) {
4095                         if (n_probes)
4096                                 scan_ch->type |= IWL_SCAN_PROBE_MASK(n_probes);
4097                 } else {
4098                         /* uCode v1 does not allow setting direct probe bits on
4099                          * passive channel. */
4100                         if ((scan_ch->type & 1) && n_probes)
4101                                 scan_ch->type |= IWL_SCAN_PROBE_MASK(n_probes);
4102                 }
4103
4104                 /* Set txpower levels to defaults */
4105                 scan_ch->tpc.dsp_atten = 110;
4106                 /* scan_pwr_info->tpc.dsp_atten; */
4107
4108                 /*scan_pwr_info->tpc.tx_gain; */
4109                 if (band == IEEE80211_BAND_5GHZ)
4110                         scan_ch->tpc.tx_gain = ((1 << 5) | (3 << 3)) | 3;
4111                 else {
4112                         scan_ch->tpc.tx_gain = ((1 << 5) | (5 << 3));
4113                         /* NOTE: if we were doing 6Mb OFDM for scans we'd use
4114                          * power level:
4115                          * scan_ch->tpc.tx_gain = ((1 << 5) | (2 << 3)) | 3;
4116                          */
4117                 }
4118
4119                 IWL_DEBUG_SCAN("Scanning %d [%s %d]\n",
4120                                scan_ch->channel,
4121                                (scan_ch->type & 1) ? "ACTIVE" : "PASSIVE",
4122                                (scan_ch->type & 1) ?
4123                                active_dwell : passive_dwell);
4124
4125                 scan_ch++;
4126                 added++;
4127         }
4128
4129         IWL_DEBUG_SCAN("total channels to scan %d \n", added);
4130         return added;
4131 }
4132
4133 static void iwl3945_init_hw_rates(struct iwl_priv *priv,
4134                               struct ieee80211_rate *rates)
4135 {
4136         int i;
4137
4138         for (i = 0; i < IWL_RATE_COUNT; i++) {
4139                 rates[i].bitrate = iwl3945_rates[i].ieee * 5;
4140                 rates[i].hw_value = i; /* Rate scaling will work on indexes */
4141                 rates[i].hw_value_short = i;
4142                 rates[i].flags = 0;
4143                 if ((i > IWL39_LAST_OFDM_RATE) || (i < IWL_FIRST_OFDM_RATE)) {
4144                         /*
4145                          * If CCK != 1M then set short preamble rate flag.
4146                          */
4147                         rates[i].flags |= (iwl3945_rates[i].plcp == 10) ?
4148                                 0 : IEEE80211_RATE_SHORT_PREAMBLE;
4149                 }
4150         }
4151 }
4152
4153 /**
4154  * iwl3945_init_geos - Initialize mac80211's geo/channel info based from eeprom
4155  */
4156 static int iwl3945_init_geos(struct iwl_priv *priv)
4157 {
4158         struct iwl_channel_info *ch;
4159         struct ieee80211_supported_band *sband;
4160         struct ieee80211_channel *channels;
4161         struct ieee80211_channel *geo_ch;
4162         struct ieee80211_rate *rates;
4163         int i = 0;
4164
4165         if (priv->bands[IEEE80211_BAND_2GHZ].n_bitrates ||
4166             priv->bands[IEEE80211_BAND_5GHZ].n_bitrates) {
4167                 IWL_DEBUG_INFO("Geography modes already initialized.\n");
4168                 set_bit(STATUS_GEO_CONFIGURED, &priv->status);
4169                 return 0;
4170         }
4171
4172         channels = kzalloc(sizeof(struct ieee80211_channel) *
4173                            priv->channel_count, GFP_KERNEL);
4174         if (!channels)
4175                 return -ENOMEM;
4176
4177         rates = kzalloc((sizeof(struct ieee80211_rate) * (IWL_RATE_COUNT + 1)),
4178                         GFP_KERNEL);
4179         if (!rates) {
4180                 kfree(channels);
4181                 return -ENOMEM;
4182         }
4183
4184         /* 5.2GHz channels start after the 2.4GHz channels */
4185         sband = &priv->bands[IEEE80211_BAND_5GHZ];
4186         sband->channels = &channels[ARRAY_SIZE(iwl3945_eeprom_band_1)];
4187         /* just OFDM */
4188         sband->bitrates = &rates[IWL_FIRST_OFDM_RATE];
4189         sband->n_bitrates = IWL_RATE_COUNT - IWL_FIRST_OFDM_RATE;
4190
4191         sband = &priv->bands[IEEE80211_BAND_2GHZ];
4192         sband->channels = channels;
4193         /* OFDM & CCK */
4194         sband->bitrates = rates;
4195         sband->n_bitrates = IWL_RATE_COUNT;
4196
4197         priv->ieee_channels = channels;
4198         priv->ieee_rates = rates;
4199
4200         iwl3945_init_hw_rates(priv, rates);
4201
4202         for (i = 0;  i < priv->channel_count; i++) {
4203                 ch = &priv->channel_info[i];
4204
4205                 /* FIXME: might be removed if scan is OK*/
4206                 if (!is_channel_valid(ch))
4207                         continue;
4208
4209                 if (is_channel_a_band(ch))
4210                         sband =  &priv->bands[IEEE80211_BAND_5GHZ];
4211                 else
4212                         sband =  &priv->bands[IEEE80211_BAND_2GHZ];
4213
4214                 geo_ch = &sband->channels[sband->n_channels++];
4215
4216                 geo_ch->center_freq = ieee80211_channel_to_frequency(ch->channel);
4217                 geo_ch->max_power = ch->max_power_avg;
4218                 geo_ch->max_antenna_gain = 0xff;
4219                 geo_ch->hw_value = ch->channel;
4220
4221                 if (is_channel_valid(ch)) {
4222                         if (!(ch->flags & EEPROM_CHANNEL_IBSS))
4223                                 geo_ch->flags |= IEEE80211_CHAN_NO_IBSS;
4224
4225                         if (!(ch->flags & EEPROM_CHANNEL_ACTIVE))
4226                                 geo_ch->flags |= IEEE80211_CHAN_PASSIVE_SCAN;
4227
4228                         if (ch->flags & EEPROM_CHANNEL_RADAR)
4229                                 geo_ch->flags |= IEEE80211_CHAN_RADAR;
4230
4231                         if (ch->max_power_avg > priv->tx_power_channel_lmt)
4232                                 priv->tx_power_channel_lmt =
4233                                     ch->max_power_avg;
4234                 } else {
4235                         geo_ch->flags |= IEEE80211_CHAN_DISABLED;
4236                 }
4237
4238                 /* Save flags for reg domain usage */
4239                 geo_ch->orig_flags = geo_ch->flags;
4240
4241                 IWL_DEBUG_INFO("Channel %d Freq=%d[%sGHz] %s flag=0%X\n",
4242                                 ch->channel, geo_ch->center_freq,
4243                                 is_channel_a_band(ch) ?  "5.2" : "2.4",
4244                                 geo_ch->flags & IEEE80211_CHAN_DISABLED ?
4245                                 "restricted" : "valid",
4246                                  geo_ch->flags);
4247         }
4248
4249         if ((priv->bands[IEEE80211_BAND_5GHZ].n_channels == 0) &&
4250              priv->cfg->sku & IWL_SKU_A) {
4251                 IWL_INFO(priv, "Incorrectly detected BG card as ABG. "
4252                         "Please send your PCI ID 0x%04X:0x%04X to maintainer.\n",
4253                         priv->pci_dev->device, priv->pci_dev->subsystem_device);
4254                  priv->cfg->sku &= ~IWL_SKU_A;
4255         }
4256
4257         IWL_INFO(priv, "Tunable channels: %d 802.11bg, %d 802.11a channels\n",
4258                priv->bands[IEEE80211_BAND_2GHZ].n_channels,
4259                priv->bands[IEEE80211_BAND_5GHZ].n_channels);
4260
4261         if (priv->bands[IEEE80211_BAND_2GHZ].n_channels)
4262                 priv->hw->wiphy->bands[IEEE80211_BAND_2GHZ] =
4263                         &priv->bands[IEEE80211_BAND_2GHZ];
4264         if (priv->bands[IEEE80211_BAND_5GHZ].n_channels)
4265                 priv->hw->wiphy->bands[IEEE80211_BAND_5GHZ] =
4266                         &priv->bands[IEEE80211_BAND_5GHZ];
4267
4268         set_bit(STATUS_GEO_CONFIGURED, &priv->status);
4269
4270         return 0;
4271 }
4272
4273 /*
4274  * iwl3945_free_geos - undo allocations in iwl3945_init_geos
4275  */
4276 static void iwl3945_free_geos(struct iwl_priv *priv)
4277 {
4278         kfree(priv->ieee_channels);
4279         kfree(priv->ieee_rates);
4280         clear_bit(STATUS_GEO_CONFIGURED, &priv->status);
4281 }
4282
4283 /******************************************************************************
4284  *
4285  * uCode download functions
4286  *
4287  ******************************************************************************/
4288
4289 static void iwl3945_dealloc_ucode_pci(struct iwl_priv *priv)
4290 {
4291         iwl_free_fw_desc(priv->pci_dev, &priv->ucode_code);
4292         iwl_free_fw_desc(priv->pci_dev, &priv->ucode_data);
4293         iwl_free_fw_desc(priv->pci_dev, &priv->ucode_data_backup);
4294         iwl_free_fw_desc(priv->pci_dev, &priv->ucode_init);
4295         iwl_free_fw_desc(priv->pci_dev, &priv->ucode_init_data);
4296         iwl_free_fw_desc(priv->pci_dev, &priv->ucode_boot);
4297 }
4298
4299 /**
4300  * iwl3945_verify_inst_full - verify runtime uCode image in card vs. host,
4301  *     looking at all data.
4302  */
4303 static int iwl3945_verify_inst_full(struct iwl_priv *priv, __le32 *image, u32 len)
4304 {
4305         u32 val;
4306         u32 save_len = len;
4307         int rc = 0;
4308         u32 errcnt;
4309
4310         IWL_DEBUG_INFO("ucode inst image size is %u\n", len);
4311
4312         rc = iwl_grab_nic_access(priv);
4313         if (rc)
4314                 return rc;
4315
4316         iwl_write_direct32(priv, HBUS_TARG_MEM_RADDR,
4317                                IWL39_RTC_INST_LOWER_BOUND);
4318
4319         errcnt = 0;
4320         for (; len > 0; len -= sizeof(u32), image++) {
4321                 /* read data comes through single port, auto-incr addr */
4322                 /* NOTE: Use the debugless read so we don't flood kernel log
4323                  * if IWL_DL_IO is set */
4324                 val = _iwl_read_direct32(priv, HBUS_TARG_MEM_RDAT);
4325                 if (val != le32_to_cpu(*image)) {
4326                         IWL_ERR(priv, "uCode INST section is invalid at "
4327                                   "offset 0x%x, is 0x%x, s/b 0x%x\n",
4328                                   save_len - len, val, le32_to_cpu(*image));
4329                         rc = -EIO;
4330                         errcnt++;
4331                         if (errcnt >= 20)
4332                                 break;
4333                 }
4334         }
4335
4336         iwl_release_nic_access(priv);
4337
4338         if (!errcnt)
4339                 IWL_DEBUG_INFO("ucode image in INSTRUCTION memory is good\n");
4340
4341         return rc;
4342 }
4343
4344
4345 /**
4346  * iwl3945_verify_inst_sparse - verify runtime uCode image in card vs. host,
4347  *   using sample data 100 bytes apart.  If these sample points are good,
4348  *   it's a pretty good bet that everything between them is good, too.
4349  */
4350 static int iwl3945_verify_inst_sparse(struct iwl_priv *priv, __le32 *image, u32 len)
4351 {
4352         u32 val;
4353         int rc = 0;
4354         u32 errcnt = 0;
4355         u32 i;
4356
4357         IWL_DEBUG_INFO("ucode inst image size is %u\n", len);
4358
4359         rc = iwl_grab_nic_access(priv);
4360         if (rc)
4361                 return rc;
4362
4363         for (i = 0; i < len; i += 100, image += 100/sizeof(u32)) {
4364                 /* read data comes through single port, auto-incr addr */
4365                 /* NOTE: Use the debugless read so we don't flood kernel log
4366                  * if IWL_DL_IO is set */
4367                 iwl_write_direct32(priv, HBUS_TARG_MEM_RADDR,
4368                         i + IWL39_RTC_INST_LOWER_BOUND);
4369                 val = _iwl_read_direct32(priv, HBUS_TARG_MEM_RDAT);
4370                 if (val != le32_to_cpu(*image)) {
4371 #if 0 /* Enable this if you want to see details */
4372                         IWL_ERR(priv, "uCode INST section is invalid at "
4373                                   "offset 0x%x, is 0x%x, s/b 0x%x\n",
4374                                   i, val, *image);
4375 #endif
4376                         rc = -EIO;
4377                         errcnt++;
4378                         if (errcnt >= 3)
4379                                 break;
4380                 }
4381         }
4382
4383         iwl_release_nic_access(priv);
4384
4385         return rc;
4386 }
4387
4388
4389 /**
4390  * iwl3945_verify_ucode - determine which instruction image is in SRAM,
4391  *    and verify its contents
4392  */
4393 static int iwl3945_verify_ucode(struct iwl_priv *priv)
4394 {
4395         __le32 *image;
4396         u32 len;
4397         int rc = 0;
4398
4399         /* Try bootstrap */
4400         image = (__le32 *)priv->ucode_boot.v_addr;
4401         len = priv->ucode_boot.len;
4402         rc = iwl3945_verify_inst_sparse(priv, image, len);
4403         if (rc == 0) {
4404                 IWL_DEBUG_INFO("Bootstrap uCode is good in inst SRAM\n");
4405                 return 0;
4406         }
4407
4408         /* Try initialize */
4409         image = (__le32 *)priv->ucode_init.v_addr;
4410         len = priv->ucode_init.len;
4411         rc = iwl3945_verify_inst_sparse(priv, image, len);
4412         if (rc == 0) {
4413                 IWL_DEBUG_INFO("Initialize uCode is good in inst SRAM\n");
4414                 return 0;
4415         }
4416
4417         /* Try runtime/protocol */
4418         image = (__le32 *)priv->ucode_code.v_addr;
4419         len = priv->ucode_code.len;
4420         rc = iwl3945_verify_inst_sparse(priv, image, len);
4421         if (rc == 0) {
4422                 IWL_DEBUG_INFO("Runtime uCode is good in inst SRAM\n");
4423                 return 0;
4424         }
4425
4426         IWL_ERR(priv, "NO VALID UCODE IMAGE IN INSTRUCTION SRAM!!\n");
4427
4428         /* Since nothing seems to match, show first several data entries in
4429          * instruction SRAM, so maybe visual inspection will give a clue.
4430          * Selection of bootstrap image (vs. other images) is arbitrary. */
4431         image = (__le32 *)priv->ucode_boot.v_addr;
4432         len = priv->ucode_boot.len;
4433         rc = iwl3945_verify_inst_full(priv, image, len);
4434
4435         return rc;
4436 }
4437
4438 static void iwl3945_nic_start(struct iwl_priv *priv)
4439 {
4440         /* Remove all resets to allow NIC to operate */
4441         iwl_write32(priv, CSR_RESET, 0);
4442 }
4443
4444 /**
4445  * iwl3945_read_ucode - Read uCode images from disk file.
4446  *
4447  * Copy into buffers for card to fetch via bus-mastering
4448  */
4449 static int iwl3945_read_ucode(struct iwl_priv *priv)
4450 {
4451         struct iwl_ucode *ucode;
4452         int ret = -EINVAL, index;
4453         const struct firmware *ucode_raw;
4454         /* firmware file name contains uCode/driver compatibility version */
4455         const char *name_pre = priv->cfg->fw_name_pre;
4456         const unsigned int api_max = priv->cfg->ucode_api_max;
4457         const unsigned int api_min = priv->cfg->ucode_api_min;
4458         char buf[25];
4459         u8 *src;
4460         size_t len;
4461         u32 api_ver, inst_size, data_size, init_size, init_data_size, boot_size;
4462
4463         /* Ask kernel firmware_class module to get the boot firmware off disk.
4464          * request_firmware() is synchronous, file is in memory on return. */
4465         for (index = api_max; index >= api_min; index--) {
4466                 sprintf(buf, "%s%u%s", name_pre, index, ".ucode");
4467                 ret = request_firmware(&ucode_raw, buf, &priv->pci_dev->dev);
4468                 if (ret < 0) {
4469                         IWL_ERR(priv, "%s firmware file req failed: %d\n",
4470                                   buf, ret);
4471                         if (ret == -ENOENT)
4472                                 continue;
4473                         else
4474                                 goto error;
4475                 } else {
4476                         if (index < api_max)
4477                                 IWL_ERR(priv, "Loaded firmware %s, "
4478                                         "which is deprecated. "
4479                                         " Please use API v%u instead.\n",
4480                                           buf, api_max);
4481                         IWL_DEBUG_INFO("Got firmware '%s' file (%zd bytes) from disk\n",
4482                                        buf, ucode_raw->size);
4483                         break;
4484                 }
4485         }
4486
4487         if (ret < 0)
4488                 goto error;
4489
4490         /* Make sure that we got at least our header! */
4491         if (ucode_raw->size < sizeof(*ucode)) {
4492                 IWL_ERR(priv, "File size way too small!\n");
4493                 ret = -EINVAL;
4494                 goto err_release;
4495         }
4496
4497         /* Data from ucode file:  header followed by uCode images */
4498         ucode = (void *)ucode_raw->data;
4499
4500         priv->ucode_ver = le32_to_cpu(ucode->ver);
4501         api_ver = IWL_UCODE_API(priv->ucode_ver);
4502         inst_size = le32_to_cpu(ucode->inst_size);
4503         data_size = le32_to_cpu(ucode->data_size);
4504         init_size = le32_to_cpu(ucode->init_size);
4505         init_data_size = le32_to_cpu(ucode->init_data_size);
4506         boot_size = le32_to_cpu(ucode->boot_size);
4507
4508         /* api_ver should match the api version forming part of the
4509          * firmware filename ... but we don't check for that and only rely
4510          * on the API version read from firware header from here on forward */
4511
4512         if (api_ver < api_min || api_ver > api_max) {
4513                 IWL_ERR(priv, "Driver unable to support your firmware API. "
4514                           "Driver supports v%u, firmware is v%u.\n",
4515                           api_max, api_ver);
4516                 priv->ucode_ver = 0;
4517                 ret = -EINVAL;
4518                 goto err_release;
4519         }
4520         if (api_ver != api_max)
4521                 IWL_ERR(priv, "Firmware has old API version. Expected %u, "
4522                           "got %u. New firmware can be obtained "
4523                           "from http://www.intellinuxwireless.org.\n",
4524                           api_max, api_ver);
4525
4526         IWL_INFO(priv, "loaded firmware version %u.%u.%u.%u\n",
4527                 IWL_UCODE_MAJOR(priv->ucode_ver),
4528                 IWL_UCODE_MINOR(priv->ucode_ver),
4529                 IWL_UCODE_API(priv->ucode_ver),
4530                 IWL_UCODE_SERIAL(priv->ucode_ver));
4531
4532         IWL_DEBUG_INFO("f/w package hdr ucode version raw = 0x%x\n",
4533                        priv->ucode_ver);
4534         IWL_DEBUG_INFO("f/w package hdr runtime inst size = %u\n", inst_size);
4535         IWL_DEBUG_INFO("f/w package hdr runtime data size = %u\n", data_size);
4536         IWL_DEBUG_INFO("f/w package hdr init inst size = %u\n", init_size);
4537         IWL_DEBUG_INFO("f/w package hdr init data size = %u\n", init_data_size);
4538         IWL_DEBUG_INFO("f/w package hdr boot inst size = %u\n", boot_size);
4539
4540
4541         /* Verify size of file vs. image size info in file's header */
4542         if (ucode_raw->size < sizeof(*ucode) +
4543                 inst_size + data_size + init_size +
4544                 init_data_size + boot_size) {
4545
4546                 IWL_DEBUG_INFO("uCode file size %d too small\n",
4547                                (int)ucode_raw->size);
4548                 ret = -EINVAL;
4549                 goto err_release;
4550         }
4551
4552         /* Verify that uCode images will fit in card's SRAM */
4553         if (inst_size > IWL39_MAX_INST_SIZE) {
4554                 IWL_DEBUG_INFO("uCode instr len %d too large to fit in\n",
4555                                inst_size);
4556                 ret = -EINVAL;
4557                 goto err_release;
4558         }
4559
4560         if (data_size > IWL39_MAX_DATA_SIZE) {
4561                 IWL_DEBUG_INFO("uCode data len %d too large to fit in\n",
4562                                data_size);
4563                 ret = -EINVAL;
4564                 goto err_release;
4565         }
4566         if (init_size > IWL39_MAX_INST_SIZE) {
4567                 IWL_DEBUG_INFO("uCode init instr len %d too large to fit in\n",
4568                                 init_size);
4569                 ret = -EINVAL;
4570                 goto err_release;
4571         }
4572         if (init_data_size > IWL39_MAX_DATA_SIZE) {
4573                 IWL_DEBUG_INFO("uCode init data len %d too large to fit in\n",
4574                                 init_data_size);
4575                 ret = -EINVAL;
4576                 goto err_release;
4577         }
4578         if (boot_size > IWL39_MAX_BSM_SIZE) {
4579                 IWL_DEBUG_INFO("uCode boot instr len %d too large to fit in\n",
4580                                 boot_size);
4581                 ret = -EINVAL;
4582                 goto err_release;
4583         }
4584
4585         /* Allocate ucode buffers for card's bus-master loading ... */
4586
4587         /* Runtime instructions and 2 copies of data:
4588          * 1) unmodified from disk
4589          * 2) backup cache for save/restore during power-downs */
4590         priv->ucode_code.len = inst_size;
4591         iwl_alloc_fw_desc(priv->pci_dev, &priv->ucode_code);
4592
4593         priv->ucode_data.len = data_size;
4594         iwl_alloc_fw_desc(priv->pci_dev, &priv->ucode_data);
4595
4596         priv->ucode_data_backup.len = data_size;
4597         iwl_alloc_fw_desc(priv->pci_dev, &priv->ucode_data_backup);
4598
4599         if (!priv->ucode_code.v_addr || !priv->ucode_data.v_addr ||
4600             !priv->ucode_data_backup.v_addr)
4601                 goto err_pci_alloc;
4602
4603         /* Initialization instructions and data */
4604         if (init_size && init_data_size) {
4605                 priv->ucode_init.len = init_size;
4606                 iwl_alloc_fw_desc(priv->pci_dev, &priv->ucode_init);
4607
4608                 priv->ucode_init_data.len = init_data_size;
4609                 iwl_alloc_fw_desc(priv->pci_dev, &priv->ucode_init_data);
4610
4611                 if (!priv->ucode_init.v_addr || !priv->ucode_init_data.v_addr)
4612                         goto err_pci_alloc;
4613         }
4614
4615         /* Bootstrap (instructions only, no data) */
4616         if (boot_size) {
4617                 priv->ucode_boot.len = boot_size;
4618                 iwl_alloc_fw_desc(priv->pci_dev, &priv->ucode_boot);
4619
4620                 if (!priv->ucode_boot.v_addr)
4621                         goto err_pci_alloc;
4622         }
4623
4624         /* Copy images into buffers for card's bus-master reads ... */
4625
4626         /* Runtime instructions (first block of data in file) */
4627         src = &ucode->data[0];
4628         len = priv->ucode_code.len;
4629         IWL_DEBUG_INFO("Copying (but not loading) uCode instr len %Zd\n", len);
4630         memcpy(priv->ucode_code.v_addr, src, len);
4631         IWL_DEBUG_INFO("uCode instr buf vaddr = 0x%p, paddr = 0x%08x\n",
4632                 priv->ucode_code.v_addr, (u32)priv->ucode_code.p_addr);
4633
4634         /* Runtime data (2nd block)
4635          * NOTE:  Copy into backup buffer will be done in iwl3945_up()  */
4636         src = &ucode->data[inst_size];
4637         len = priv->ucode_data.len;
4638         IWL_DEBUG_INFO("Copying (but not loading) uCode data len %Zd\n", len);
4639         memcpy(priv->ucode_data.v_addr, src, len);
4640         memcpy(priv->ucode_data_backup.v_addr, src, len);
4641
4642         /* Initialization instructions (3rd block) */
4643         if (init_size) {
4644                 src = &ucode->data[inst_size + data_size];
4645                 len = priv->ucode_init.len;
4646                 IWL_DEBUG_INFO("Copying (but not loading) init instr len %Zd\n",
4647                                len);
4648                 memcpy(priv->ucode_init.v_addr, src, len);
4649         }
4650
4651         /* Initialization data (4th block) */
4652         if (init_data_size) {
4653                 src = &ucode->data[inst_size + data_size + init_size];
4654                 len = priv->ucode_init_data.len;
4655                 IWL_DEBUG_INFO("Copying (but not loading) init data len %d\n",
4656                                (int)len);
4657                 memcpy(priv->ucode_init_data.v_addr, src, len);
4658         }
4659
4660         /* Bootstrap instructions (5th block) */
4661         src = &ucode->data[inst_size + data_size + init_size + init_data_size];
4662         len = priv->ucode_boot.len;
4663         IWL_DEBUG_INFO("Copying (but not loading) boot instr len %d\n",
4664                        (int)len);
4665         memcpy(priv->ucode_boot.v_addr, src, len);
4666
4667         /* We have our copies now, allow OS release its copies */
4668         release_firmware(ucode_raw);
4669         return 0;
4670
4671  err_pci_alloc:
4672         IWL_ERR(priv, "failed to allocate pci memory\n");
4673         ret = -ENOMEM;
4674         iwl3945_dealloc_ucode_pci(priv);
4675
4676  err_release:
4677         release_firmware(ucode_raw);
4678
4679  error:
4680         return ret;
4681 }
4682
4683
4684 /**
4685  * iwl3945_set_ucode_ptrs - Set uCode address location
4686  *
4687  * Tell initialization uCode where to find runtime uCode.
4688  *
4689  * BSM registers initially contain pointers to initialization uCode.
4690  * We need to replace them to load runtime uCode inst and data,
4691  * and to save runtime data when powering down.
4692  */
4693 static int iwl3945_set_ucode_ptrs(struct iwl_priv *priv)
4694 {
4695         dma_addr_t pinst;
4696         dma_addr_t pdata;
4697         int rc = 0;
4698         unsigned long flags;
4699
4700         /* bits 31:0 for 3945 */
4701         pinst = priv->ucode_code.p_addr;
4702         pdata = priv->ucode_data_backup.p_addr;
4703
4704         spin_lock_irqsave(&priv->lock, flags);
4705         rc = iwl_grab_nic_access(priv);
4706         if (rc) {
4707                 spin_unlock_irqrestore(&priv->lock, flags);
4708                 return rc;
4709         }
4710
4711         /* Tell bootstrap uCode where to find image to load */
4712         iwl_write_prph(priv, BSM_DRAM_INST_PTR_REG, pinst);
4713         iwl_write_prph(priv, BSM_DRAM_DATA_PTR_REG, pdata);
4714         iwl_write_prph(priv, BSM_DRAM_DATA_BYTECOUNT_REG,
4715                                  priv->ucode_data.len);
4716
4717         /* Inst byte count must be last to set up, bit 31 signals uCode
4718          *   that all new ptr/size info is in place */
4719         iwl_write_prph(priv, BSM_DRAM_INST_BYTECOUNT_REG,
4720                                  priv->ucode_code.len | BSM_DRAM_INST_LOAD);
4721
4722         iwl_release_nic_access(priv);
4723
4724         spin_unlock_irqrestore(&priv->lock, flags);
4725
4726         IWL_DEBUG_INFO("Runtime uCode pointers are set.\n");
4727
4728         return rc;
4729 }
4730
4731 /**
4732  * iwl3945_init_alive_start - Called after REPLY_ALIVE notification received
4733  *
4734  * Called after REPLY_ALIVE notification received from "initialize" uCode.
4735  *
4736  * Tell "initialize" uCode to go ahead and load the runtime uCode.
4737  */
4738 static void iwl3945_init_alive_start(struct iwl_priv *priv)
4739 {
4740         /* Check alive response for "valid" sign from uCode */
4741         if (priv->card_alive_init.is_valid != UCODE_VALID_OK) {
4742                 /* We had an error bringing up the hardware, so take it
4743                  * all the way back down so we can try again */
4744                 IWL_DEBUG_INFO("Initialize Alive failed.\n");
4745                 goto restart;
4746         }
4747
4748         /* Bootstrap uCode has loaded initialize uCode ... verify inst image.
4749          * This is a paranoid check, because we would not have gotten the
4750          * "initialize" alive if code weren't properly loaded.  */
4751         if (iwl3945_verify_ucode(priv)) {
4752                 /* Runtime instruction load was bad;
4753                  * take it all the way back down so we can try again */
4754                 IWL_DEBUG_INFO("Bad \"initialize\" uCode load.\n");
4755                 goto restart;
4756         }
4757
4758         /* Send pointers to protocol/runtime uCode image ... init code will
4759          * load and launch runtime uCode, which will send us another "Alive"
4760          * notification. */
4761         IWL_DEBUG_INFO("Initialization Alive received.\n");
4762         if (iwl3945_set_ucode_ptrs(priv)) {
4763                 /* Runtime instruction load won't happen;
4764                  * take it all the way back down so we can try again */
4765                 IWL_DEBUG_INFO("Couldn't set up uCode pointers.\n");
4766                 goto restart;
4767         }
4768         return;
4769
4770  restart:
4771         queue_work(priv->workqueue, &priv->restart);
4772 }
4773
4774
4775 /* temporary */
4776 static int iwl3945_mac_beacon_update(struct ieee80211_hw *hw,
4777                                      struct sk_buff *skb);
4778
4779 /**
4780  * iwl3945_alive_start - called after REPLY_ALIVE notification received
4781  *                   from protocol/runtime uCode (initialization uCode's
4782  *                   Alive gets handled by iwl3945_init_alive_start()).
4783  */
4784 static void iwl3945_alive_start(struct iwl_priv *priv)
4785 {
4786         int rc = 0;
4787         int thermal_spin = 0;
4788         u32 rfkill;
4789
4790         IWL_DEBUG_INFO("Runtime Alive received.\n");
4791
4792         if (priv->card_alive.is_valid != UCODE_VALID_OK) {
4793                 /* We had an error bringing up the hardware, so take it
4794                  * all the way back down so we can try again */
4795                 IWL_DEBUG_INFO("Alive failed.\n");
4796                 goto restart;
4797         }
4798
4799         /* Initialize uCode has loaded Runtime uCode ... verify inst image.
4800          * This is a paranoid check, because we would not have gotten the
4801          * "runtime" alive if code weren't properly loaded.  */
4802         if (iwl3945_verify_ucode(priv)) {
4803                 /* Runtime instruction load was bad;
4804                  * take it all the way back down so we can try again */
4805                 IWL_DEBUG_INFO("Bad runtime uCode load.\n");
4806                 goto restart;
4807         }
4808
4809         iwl3945_clear_stations_table(priv);
4810
4811         rc = iwl_grab_nic_access(priv);
4812         if (rc) {
4813                 IWL_WARN(priv, "Can not read RFKILL status from adapter\n");
4814                 return;
4815         }
4816
4817         rfkill = iwl_read_prph(priv, APMG_RFKILL_REG);
4818         IWL_DEBUG_INFO("RFKILL status: 0x%x\n", rfkill);
4819         iwl_release_nic_access(priv);
4820
4821         if (rfkill & 0x1) {
4822                 clear_bit(STATUS_RF_KILL_HW, &priv->status);
4823                 /* if RFKILL is not on, then wait for thermal
4824                  * sensor in adapter to kick in */
4825                 while (iwl3945_hw_get_temperature(priv) == 0) {
4826                         thermal_spin++;
4827                         udelay(10);
4828                 }
4829
4830                 if (thermal_spin)
4831                         IWL_DEBUG_INFO("Thermal calibration took %dus\n",
4832                                        thermal_spin * 10);
4833         } else
4834                 set_bit(STATUS_RF_KILL_HW, &priv->status);
4835
4836         /* After the ALIVE response, we can send commands to 3945 uCode */
4837         set_bit(STATUS_ALIVE, &priv->status);
4838
4839         /* Clear out the uCode error bit if it is set */
4840         clear_bit(STATUS_FW_ERROR, &priv->status);
4841
4842         if (iwl_is_rfkill(priv))
4843                 return;
4844
4845         ieee80211_wake_queues(priv->hw);
4846
4847         priv->active_rate = priv->rates_mask;
4848         priv->active_rate_basic = priv->rates_mask & IWL_BASIC_RATES_MASK;
4849
4850         iwl3945_send_power_mode(priv, IWL_POWER_LEVEL(priv->power_mode));
4851
4852         if (iwl3945_is_associated(priv)) {
4853                 struct iwl3945_rxon_cmd *active_rxon =
4854                                 (struct iwl3945_rxon_cmd *)(&priv->active39_rxon);
4855
4856                 memcpy(&priv->staging39_rxon, &priv->active39_rxon,
4857                        sizeof(priv->staging39_rxon));
4858                 active_rxon->filter_flags &= ~RXON_FILTER_ASSOC_MSK;
4859         } else {
4860                 /* Initialize our rx_config data */
4861                 iwl3945_connection_init_rx_config(priv, priv->iw_mode);
4862                 memcpy(priv->staging39_rxon.node_addr, priv->mac_addr, ETH_ALEN);
4863         }
4864
4865         /* Configure Bluetooth device coexistence support */
4866         iwl3945_send_bt_config(priv);
4867
4868         /* Configure the adapter for unassociated operation */
4869         iwl3945_commit_rxon(priv);
4870
4871         iwl3945_reg_txpower_periodic(priv);
4872
4873         iwl3945_led_register(priv);
4874
4875         IWL_DEBUG_INFO("ALIVE processing complete.\n");
4876         set_bit(STATUS_READY, &priv->status);
4877         wake_up_interruptible(&priv->wait_command_queue);
4878
4879         if (priv->error_recovering)
4880                 iwl3945_error_recovery(priv);
4881
4882         /* reassociate for ADHOC mode */
4883         if (priv->vif && (priv->iw_mode == NL80211_IFTYPE_ADHOC)) {
4884                 struct sk_buff *beacon = ieee80211_beacon_get(priv->hw,
4885                                                                 priv->vif);
4886                 if (beacon)
4887                         iwl3945_mac_beacon_update(priv->hw, beacon);
4888         }
4889
4890         return;
4891
4892  restart:
4893         queue_work(priv->workqueue, &priv->restart);
4894 }
4895
4896 static void iwl3945_cancel_deferred_work(struct iwl_priv *priv);
4897
4898 static void __iwl3945_down(struct iwl_priv *priv)
4899 {
4900         unsigned long flags;
4901         int exit_pending = test_bit(STATUS_EXIT_PENDING, &priv->status);
4902         struct ieee80211_conf *conf = NULL;
4903
4904         IWL_DEBUG_INFO(DRV_NAME " is going down\n");
4905
4906         conf = ieee80211_get_hw_conf(priv->hw);
4907
4908         if (!exit_pending)
4909                 set_bit(STATUS_EXIT_PENDING, &priv->status);
4910
4911         iwl3945_led_unregister(priv);
4912         iwl3945_clear_stations_table(priv);
4913
4914         /* Unblock any waiting calls */
4915         wake_up_interruptible_all(&priv->wait_command_queue);
4916
4917         /* Wipe out the EXIT_PENDING status bit if we are not actually
4918          * exiting the module */
4919         if (!exit_pending)
4920                 clear_bit(STATUS_EXIT_PENDING, &priv->status);
4921
4922         /* stop and reset the on-board processor */
4923         iwl_write32(priv, CSR_RESET, CSR_RESET_REG_FLAG_NEVO_RESET);
4924
4925         /* tell the device to stop sending interrupts */
4926         spin_lock_irqsave(&priv->lock, flags);
4927         iwl3945_disable_interrupts(priv);
4928         spin_unlock_irqrestore(&priv->lock, flags);
4929         iwl_synchronize_irq(priv);
4930
4931         if (priv->mac80211_registered)
4932                 ieee80211_stop_queues(priv->hw);
4933
4934         /* If we have not previously called iwl3945_init() then
4935          * clear all bits but the RF Kill and SUSPEND bits and return */
4936         if (!iwl_is_init(priv)) {
4937                 priv->status = test_bit(STATUS_RF_KILL_HW, &priv->status) <<
4938                                         STATUS_RF_KILL_HW |
4939                                test_bit(STATUS_RF_KILL_SW, &priv->status) <<
4940                                         STATUS_RF_KILL_SW |
4941                                test_bit(STATUS_GEO_CONFIGURED, &priv->status) <<
4942                                         STATUS_GEO_CONFIGURED |
4943                                test_bit(STATUS_IN_SUSPEND, &priv->status) <<
4944                                         STATUS_IN_SUSPEND |
4945                                 test_bit(STATUS_EXIT_PENDING, &priv->status) <<
4946                                         STATUS_EXIT_PENDING;
4947                 goto exit;
4948         }
4949
4950         /* ...otherwise clear out all the status bits but the RF Kill and
4951          * SUSPEND bits and continue taking the NIC down. */
4952         priv->status &= test_bit(STATUS_RF_KILL_HW, &priv->status) <<
4953                                 STATUS_RF_KILL_HW |
4954                         test_bit(STATUS_RF_KILL_SW, &priv->status) <<
4955                                 STATUS_RF_KILL_SW |
4956                         test_bit(STATUS_GEO_CONFIGURED, &priv->status) <<
4957                                 STATUS_GEO_CONFIGURED |
4958                         test_bit(STATUS_IN_SUSPEND, &priv->status) <<
4959                                 STATUS_IN_SUSPEND |
4960                         test_bit(STATUS_FW_ERROR, &priv->status) <<
4961                                 STATUS_FW_ERROR |
4962                         test_bit(STATUS_EXIT_PENDING, &priv->status) <<
4963                                 STATUS_EXIT_PENDING;
4964
4965         spin_lock_irqsave(&priv->lock, flags);
4966         iwl_clear_bit(priv, CSR_GP_CNTRL, CSR_GP_CNTRL_REG_FLAG_MAC_ACCESS_REQ);
4967         spin_unlock_irqrestore(&priv->lock, flags);
4968
4969         iwl3945_hw_txq_ctx_stop(priv);
4970         iwl3945_hw_rxq_stop(priv);
4971
4972         spin_lock_irqsave(&priv->lock, flags);
4973         if (!iwl_grab_nic_access(priv)) {
4974                 iwl_write_prph(priv, APMG_CLK_DIS_REG,
4975                                          APMG_CLK_VAL_DMA_CLK_RQT);
4976                 iwl_release_nic_access(priv);
4977         }
4978         spin_unlock_irqrestore(&priv->lock, flags);
4979
4980         udelay(5);
4981
4982         priv->cfg->ops->lib->apm_ops.reset(priv);
4983  exit:
4984         memset(&priv->card_alive, 0, sizeof(struct iwl_alive_resp));
4985
4986         if (priv->ibss_beacon)
4987                 dev_kfree_skb(priv->ibss_beacon);
4988         priv->ibss_beacon = NULL;
4989
4990         /* clear out any free frames */
4991         iwl3945_clear_free_frames(priv);
4992 }
4993
4994 static void iwl3945_down(struct iwl_priv *priv)
4995 {
4996         mutex_lock(&priv->mutex);
4997         __iwl3945_down(priv);
4998         mutex_unlock(&priv->mutex);
4999
5000         iwl3945_cancel_deferred_work(priv);
5001 }
5002
5003 #define MAX_HW_RESTARTS 5
5004
5005 static int __iwl3945_up(struct iwl_priv *priv)
5006 {
5007         int rc, i;
5008
5009         if (test_bit(STATUS_EXIT_PENDING, &priv->status)) {
5010                 IWL_WARN(priv, "Exit pending; will not bring the NIC up\n");
5011                 return -EIO;
5012         }
5013
5014         if (test_bit(STATUS_RF_KILL_SW, &priv->status)) {
5015                 IWL_WARN(priv, "Radio disabled by SW RF kill (module "
5016                             "parameter)\n");
5017                 return -ENODEV;
5018         }
5019
5020         if (!priv->ucode_data_backup.v_addr || !priv->ucode_data.v_addr) {
5021                 IWL_ERR(priv, "ucode not available for device bring up\n");
5022                 return -EIO;
5023         }
5024
5025         /* If platform's RF_KILL switch is NOT set to KILL */
5026         if (iwl_read32(priv, CSR_GP_CNTRL) &
5027                                 CSR_GP_CNTRL_REG_FLAG_HW_RF_KILL_SW)
5028                 clear_bit(STATUS_RF_KILL_HW, &priv->status);
5029         else {
5030                 set_bit(STATUS_RF_KILL_HW, &priv->status);
5031                 if (!test_bit(STATUS_IN_SUSPEND, &priv->status)) {
5032                         IWL_WARN(priv, "Radio disabled by HW RF Kill switch\n");
5033                         return -ENODEV;
5034                 }
5035         }
5036
5037         iwl_write32(priv, CSR_INT, 0xFFFFFFFF);
5038
5039         rc = iwl3945_hw_nic_init(priv);
5040         if (rc) {
5041                 IWL_ERR(priv, "Unable to int nic\n");
5042                 return rc;
5043         }
5044
5045         /* make sure rfkill handshake bits are cleared */
5046         iwl_write32(priv, CSR_UCODE_DRV_GP1_CLR, CSR_UCODE_SW_BIT_RFKILL);
5047         iwl_write32(priv, CSR_UCODE_DRV_GP1_CLR,
5048                     CSR_UCODE_DRV_GP1_BIT_CMD_BLOCKED);
5049
5050         /* clear (again), then enable host interrupts */
5051         iwl_write32(priv, CSR_INT, 0xFFFFFFFF);
5052         iwl3945_enable_interrupts(priv);
5053
5054         /* really make sure rfkill handshake bits are cleared */
5055         iwl_write32(priv, CSR_UCODE_DRV_GP1_CLR, CSR_UCODE_SW_BIT_RFKILL);
5056         iwl_write32(priv, CSR_UCODE_DRV_GP1_CLR, CSR_UCODE_SW_BIT_RFKILL);
5057
5058         /* Copy original ucode data image from disk into backup cache.
5059          * This will be used to initialize the on-board processor's
5060          * data SRAM for a clean start when the runtime program first loads. */
5061         memcpy(priv->ucode_data_backup.v_addr, priv->ucode_data.v_addr,
5062                priv->ucode_data.len);
5063
5064         /* We return success when we resume from suspend and rf_kill is on. */
5065         if (test_bit(STATUS_RF_KILL_HW, &priv->status))
5066                 return 0;
5067
5068         for (i = 0; i < MAX_HW_RESTARTS; i++) {
5069
5070                 iwl3945_clear_stations_table(priv);
5071
5072                 /* load bootstrap state machine,
5073                  * load bootstrap program into processor's memory,
5074                  * prepare to load the "initialize" uCode */
5075                 priv->cfg->ops->lib->load_ucode(priv);
5076
5077                 if (rc) {
5078                         IWL_ERR(priv,
5079                                 "Unable to set up bootstrap uCode: %d\n", rc);
5080                         continue;
5081                 }
5082
5083                 /* start card; "initialize" will load runtime ucode */
5084                 iwl3945_nic_start(priv);
5085
5086                 IWL_DEBUG_INFO(DRV_NAME " is coming up\n");
5087
5088                 return 0;
5089         }
5090
5091         set_bit(STATUS_EXIT_PENDING, &priv->status);
5092         __iwl3945_down(priv);
5093         clear_bit(STATUS_EXIT_PENDING, &priv->status);
5094
5095         /* tried to restart and config the device for as long as our
5096          * patience could withstand */
5097         IWL_ERR(priv, "Unable to initialize device after %d attempts.\n", i);
5098         return -EIO;
5099 }
5100
5101
5102 /*****************************************************************************
5103  *
5104  * Workqueue callbacks
5105  *
5106  *****************************************************************************/
5107
5108 static void iwl3945_bg_init_alive_start(struct work_struct *data)
5109 {
5110         struct iwl_priv *priv =
5111             container_of(data, struct iwl_priv, init_alive_start.work);
5112
5113         if (test_bit(STATUS_EXIT_PENDING, &priv->status))
5114                 return;
5115
5116         mutex_lock(&priv->mutex);
5117         iwl3945_init_alive_start(priv);
5118         mutex_unlock(&priv->mutex);
5119 }
5120
5121 static void iwl3945_bg_alive_start(struct work_struct *data)
5122 {
5123         struct iwl_priv *priv =
5124             container_of(data, struct iwl_priv, alive_start.work);
5125
5126         if (test_bit(STATUS_EXIT_PENDING, &priv->status))
5127                 return;
5128
5129         mutex_lock(&priv->mutex);
5130         iwl3945_alive_start(priv);
5131         mutex_unlock(&priv->mutex);
5132 }
5133
5134 static void iwl3945_bg_rf_kill(struct work_struct *work)
5135 {
5136         struct iwl_priv *priv = container_of(work, struct iwl_priv, rf_kill);
5137
5138         wake_up_interruptible(&priv->wait_command_queue);
5139
5140         if (test_bit(STATUS_EXIT_PENDING, &priv->status))
5141                 return;
5142
5143         mutex_lock(&priv->mutex);
5144
5145         if (!iwl_is_rfkill(priv)) {
5146                 IWL_DEBUG(IWL_DL_INFO | IWL_DL_RF_KILL,
5147                           "HW and/or SW RF Kill no longer active, restarting "
5148                           "device\n");
5149                 if (!test_bit(STATUS_EXIT_PENDING, &priv->status) &&
5150                      test_bit(STATUS_ALIVE, &priv->status))
5151                         queue_work(priv->workqueue, &priv->restart);
5152         } else {
5153
5154                 if (!test_bit(STATUS_RF_KILL_HW, &priv->status))
5155                         IWL_DEBUG_RF_KILL("Can not turn radio back on - "
5156                                           "disabled by SW switch\n");
5157                 else
5158                         IWL_WARN(priv, "Radio Frequency Kill Switch is On:\n"
5159                                     "Kill switch must be turned off for "
5160                                     "wireless networking to work.\n");
5161         }
5162
5163         mutex_unlock(&priv->mutex);
5164         iwl3945_rfkill_set_hw_state(priv);
5165 }
5166
5167 static void iwl3945_rfkill_poll(struct work_struct *data)
5168 {
5169         struct iwl_priv *priv =
5170             container_of(data, struct iwl_priv, rfkill_poll.work);
5171         unsigned long status = priv->status;
5172
5173         if (iwl_read32(priv, CSR_GP_CNTRL) & CSR_GP_CNTRL_REG_FLAG_HW_RF_KILL_SW)
5174                 clear_bit(STATUS_RF_KILL_HW, &priv->status);
5175         else
5176                 set_bit(STATUS_RF_KILL_HW, &priv->status);
5177
5178         if (test_bit(STATUS_RF_KILL_HW, &status) != test_bit(STATUS_RF_KILL_HW, &priv->status))
5179                 queue_work(priv->workqueue, &priv->rf_kill);
5180
5181         queue_delayed_work(priv->workqueue, &priv->rfkill_poll,
5182                            round_jiffies_relative(2 * HZ));
5183
5184 }
5185
5186 #define IWL_SCAN_CHECK_WATCHDOG (7 * HZ)
5187
5188 static void iwl3945_bg_scan_check(struct work_struct *data)
5189 {
5190         struct iwl_priv *priv =
5191             container_of(data, struct iwl_priv, scan_check.work);
5192
5193         if (test_bit(STATUS_EXIT_PENDING, &priv->status))
5194                 return;
5195
5196         mutex_lock(&priv->mutex);
5197         if (test_bit(STATUS_SCANNING, &priv->status) ||
5198             test_bit(STATUS_SCAN_ABORTING, &priv->status)) {
5199                 IWL_DEBUG(IWL_DL_INFO | IWL_DL_SCAN,
5200                           "Scan completion watchdog resetting adapter (%dms)\n",
5201                           jiffies_to_msecs(IWL_SCAN_CHECK_WATCHDOG));
5202
5203                 if (!test_bit(STATUS_EXIT_PENDING, &priv->status))
5204                         iwl3945_send_scan_abort(priv);
5205         }
5206         mutex_unlock(&priv->mutex);
5207 }
5208
5209 static void iwl3945_bg_request_scan(struct work_struct *data)
5210 {
5211         struct iwl_priv *priv =
5212             container_of(data, struct iwl_priv, request_scan);
5213         struct iwl_host_cmd cmd = {
5214                 .id = REPLY_SCAN_CMD,
5215                 .len = sizeof(struct iwl3945_scan_cmd),
5216                 .meta.flags = CMD_SIZE_HUGE,
5217         };
5218         int rc = 0;
5219         struct iwl3945_scan_cmd *scan;
5220         struct ieee80211_conf *conf = NULL;
5221         u8 n_probes = 2;
5222         enum ieee80211_band band;
5223         DECLARE_SSID_BUF(ssid);
5224
5225         conf = ieee80211_get_hw_conf(priv->hw);
5226
5227         mutex_lock(&priv->mutex);
5228
5229         if (!iwl_is_ready(priv)) {
5230                 IWL_WARN(priv, "request scan called when driver not ready.\n");
5231                 goto done;
5232         }
5233
5234         /* Make sure the scan wasn't canceled before this queued work
5235          * was given the chance to run... */
5236         if (!test_bit(STATUS_SCANNING, &priv->status))
5237                 goto done;
5238
5239         /* This should never be called or scheduled if there is currently
5240          * a scan active in the hardware. */
5241         if (test_bit(STATUS_SCAN_HW, &priv->status)) {
5242                 IWL_DEBUG_INFO("Multiple concurrent scan requests in parallel. "
5243                                "Ignoring second request.\n");
5244                 rc = -EIO;
5245                 goto done;
5246         }
5247
5248         if (test_bit(STATUS_EXIT_PENDING, &priv->status)) {
5249                 IWL_DEBUG_SCAN("Aborting scan due to device shutdown\n");
5250                 goto done;
5251         }
5252
5253         if (test_bit(STATUS_SCAN_ABORTING, &priv->status)) {
5254                 IWL_DEBUG_HC("Scan request while abort pending.  Queuing.\n");
5255                 goto done;
5256         }
5257
5258         if (iwl_is_rfkill(priv)) {
5259                 IWL_DEBUG_HC("Aborting scan due to RF Kill activation\n");
5260                 goto done;
5261         }
5262
5263         if (!test_bit(STATUS_READY, &priv->status)) {
5264                 IWL_DEBUG_HC("Scan request while uninitialized.  Queuing.\n");
5265                 goto done;
5266         }
5267
5268         if (!priv->scan_bands) {
5269                 IWL_DEBUG_HC("Aborting scan due to no requested bands\n");
5270                 goto done;
5271         }
5272
5273         if (!priv->scan) {
5274                 priv->scan = kmalloc(sizeof(struct iwl3945_scan_cmd) +
5275                                      IWL_MAX_SCAN_SIZE, GFP_KERNEL);
5276                 if (!priv->scan) {
5277                         rc = -ENOMEM;
5278                         goto done;
5279                 }
5280         }
5281         scan = priv->scan;
5282         memset(scan, 0, sizeof(struct iwl3945_scan_cmd) + IWL_MAX_SCAN_SIZE);
5283
5284         scan->quiet_plcp_th = IWL_PLCP_QUIET_THRESH;
5285         scan->quiet_time = IWL_ACTIVE_QUIET_TIME;
5286
5287         if (iwl3945_is_associated(priv)) {
5288                 u16 interval = 0;
5289                 u32 extra;
5290                 u32 suspend_time = 100;
5291                 u32 scan_suspend_time = 100;
5292                 unsigned long flags;
5293
5294                 IWL_DEBUG_INFO("Scanning while associated...\n");
5295
5296                 spin_lock_irqsave(&priv->lock, flags);
5297                 interval = priv->beacon_int;
5298                 spin_unlock_irqrestore(&priv->lock, flags);
5299
5300                 scan->suspend_time = 0;
5301                 scan->max_out_time = cpu_to_le32(200 * 1024);
5302                 if (!interval)
5303                         interval = suspend_time;
5304                 /*
5305                  * suspend time format:
5306                  *  0-19: beacon interval in usec (time before exec.)
5307                  * 20-23: 0
5308                  * 24-31: number of beacons (suspend between channels)
5309                  */
5310
5311                 extra = (suspend_time / interval) << 24;
5312                 scan_suspend_time = 0xFF0FFFFF &
5313                     (extra | ((suspend_time % interval) * 1024));
5314
5315                 scan->suspend_time = cpu_to_le32(scan_suspend_time);
5316                 IWL_DEBUG_SCAN("suspend_time 0x%X beacon interval %d\n",
5317                                scan_suspend_time, interval);
5318         }
5319
5320         /* We should add the ability for user to lock to PASSIVE ONLY */
5321         if (priv->one_direct_scan) {
5322                 IWL_DEBUG_SCAN
5323                     ("Kicking off one direct scan for '%s'\n",
5324                      print_ssid(ssid, priv->direct_ssid,
5325                                 priv->direct_ssid_len));
5326                 scan->direct_scan[0].id = WLAN_EID_SSID;
5327                 scan->direct_scan[0].len = priv->direct_ssid_len;
5328                 memcpy(scan->direct_scan[0].ssid,
5329                        priv->direct_ssid, priv->direct_ssid_len);
5330                 n_probes++;
5331         } else
5332                 IWL_DEBUG_SCAN("Kicking off one indirect scan.\n");
5333
5334         /* We don't build a direct scan probe request; the uCode will do
5335          * that based on the direct_mask added to each channel entry */
5336         scan->tx_cmd.len = cpu_to_le16(
5337                 iwl3945_fill_probe_req(priv, (struct ieee80211_mgmt *)scan->data,
5338                         IWL_MAX_SCAN_SIZE - sizeof(*scan)));
5339         scan->tx_cmd.tx_flags = TX_CMD_FLG_SEQ_CTL_MSK;
5340         scan->tx_cmd.sta_id = priv->hw_params.bcast_sta_id;
5341         scan->tx_cmd.stop_time.life_time = TX_CMD_LIFE_TIME_INFINITE;
5342
5343         /* flags + rate selection */
5344
5345         if (priv->scan_bands & BIT(IEEE80211_BAND_2GHZ)) {
5346                 scan->flags = RXON_FLG_BAND_24G_MSK | RXON_FLG_AUTO_DETECT_MSK;
5347                 scan->tx_cmd.rate = IWL_RATE_1M_PLCP;
5348                 scan->good_CRC_th = 0;
5349                 band = IEEE80211_BAND_2GHZ;
5350         } else if (priv->scan_bands & BIT(IEEE80211_BAND_5GHZ)) {
5351                 scan->tx_cmd.rate = IWL_RATE_6M_PLCP;
5352                 scan->good_CRC_th = IWL_GOOD_CRC_TH;
5353                 band = IEEE80211_BAND_5GHZ;
5354         } else {
5355                 IWL_WARN(priv, "Invalid scan band count\n");
5356                 goto done;
5357         }
5358
5359         /* select Rx antennas */
5360         scan->flags |= iwl3945_get_antenna_flags(priv);
5361
5362         if (priv->iw_mode == NL80211_IFTYPE_MONITOR)
5363                 scan->filter_flags = RXON_FILTER_PROMISC_MSK;
5364
5365         scan->channel_count =
5366                 iwl3945_get_channels_for_scan(priv, band, 1, /* active */
5367                                               n_probes,
5368                         (void *)&scan->data[le16_to_cpu(scan->tx_cmd.len)]);
5369
5370         if (scan->channel_count == 0) {
5371                 IWL_DEBUG_SCAN("channel count %d\n", scan->channel_count);
5372                 goto done;
5373         }
5374
5375         cmd.len += le16_to_cpu(scan->tx_cmd.len) +
5376             scan->channel_count * sizeof(struct iwl3945_scan_channel);
5377         cmd.data = scan;
5378         scan->len = cpu_to_le16(cmd.len);
5379
5380         set_bit(STATUS_SCAN_HW, &priv->status);
5381         rc = iwl_send_cmd_sync(priv, &cmd);
5382         if (rc)
5383                 goto done;
5384
5385         queue_delayed_work(priv->workqueue, &priv->scan_check,
5386                            IWL_SCAN_CHECK_WATCHDOG);
5387
5388         mutex_unlock(&priv->mutex);
5389         return;
5390
5391  done:
5392         /* can not perform scan make sure we clear scanning
5393          * bits from status so next scan request can be performed.
5394          * if we dont clear scanning status bit here all next scan
5395          * will fail
5396         */
5397         clear_bit(STATUS_SCAN_HW, &priv->status);
5398         clear_bit(STATUS_SCANNING, &priv->status);
5399
5400         /* inform mac80211 scan aborted */
5401         queue_work(priv->workqueue, &priv->scan_completed);
5402         mutex_unlock(&priv->mutex);
5403 }
5404
5405 static void iwl3945_bg_up(struct work_struct *data)
5406 {
5407         struct iwl_priv *priv = container_of(data, struct iwl_priv, up);
5408
5409         if (test_bit(STATUS_EXIT_PENDING, &priv->status))
5410                 return;
5411
5412         mutex_lock(&priv->mutex);
5413         __iwl3945_up(priv);
5414         mutex_unlock(&priv->mutex);
5415         iwl3945_rfkill_set_hw_state(priv);
5416 }
5417
5418 static void iwl3945_bg_restart(struct work_struct *data)
5419 {
5420         struct iwl_priv *priv = container_of(data, struct iwl_priv, restart);
5421
5422         if (test_bit(STATUS_EXIT_PENDING, &priv->status))
5423                 return;
5424
5425         iwl3945_down(priv);
5426         queue_work(priv->workqueue, &priv->up);
5427 }
5428
5429 static void iwl3945_bg_rx_replenish(struct work_struct *data)
5430 {
5431         struct iwl_priv *priv =
5432             container_of(data, struct iwl_priv, rx_replenish);
5433
5434         if (test_bit(STATUS_EXIT_PENDING, &priv->status))
5435                 return;
5436
5437         mutex_lock(&priv->mutex);
5438         iwl3945_rx_replenish(priv);
5439         mutex_unlock(&priv->mutex);
5440 }
5441
5442 #define IWL_DELAY_NEXT_SCAN (HZ*2)
5443
5444 static void iwl3945_post_associate(struct iwl_priv *priv)
5445 {
5446         int rc = 0;
5447         struct ieee80211_conf *conf = NULL;
5448
5449         if (priv->iw_mode == NL80211_IFTYPE_AP) {
5450                 IWL_ERR(priv, "%s Should not be called in AP mode\n", __func__);
5451                 return;
5452         }
5453
5454
5455         IWL_DEBUG_ASSOC("Associated as %d to: %pM\n",
5456                         priv->assoc_id, priv->active39_rxon.bssid_addr);
5457
5458         if (test_bit(STATUS_EXIT_PENDING, &priv->status))
5459                 return;
5460
5461         if (!priv->vif || !priv->is_open)
5462                 return;
5463
5464         iwl_scan_cancel_timeout(priv, 200);
5465
5466         conf = ieee80211_get_hw_conf(priv->hw);
5467
5468         priv->staging39_rxon.filter_flags &= ~RXON_FILTER_ASSOC_MSK;
5469         iwl3945_commit_rxon(priv);
5470
5471         memset(&priv->rxon_timing, 0, sizeof(struct iwl_rxon_time_cmd));
5472         iwl3945_setup_rxon_timing(priv);
5473         rc = iwl_send_cmd_pdu(priv, REPLY_RXON_TIMING,
5474                               sizeof(priv->rxon_timing), &priv->rxon_timing);
5475         if (rc)
5476                 IWL_WARN(priv, "REPLY_RXON_TIMING failed - "
5477                             "Attempting to continue.\n");
5478
5479         priv->staging39_rxon.filter_flags |= RXON_FILTER_ASSOC_MSK;
5480
5481         priv->staging39_rxon.assoc_id = cpu_to_le16(priv->assoc_id);
5482
5483         IWL_DEBUG_ASSOC("assoc id %d beacon interval %d\n",
5484                         priv->assoc_id, priv->beacon_int);
5485
5486         if (priv->assoc_capability & WLAN_CAPABILITY_SHORT_PREAMBLE)
5487                 priv->staging39_rxon.flags |= RXON_FLG_SHORT_PREAMBLE_MSK;
5488         else
5489                 priv->staging39_rxon.flags &= ~RXON_FLG_SHORT_PREAMBLE_MSK;
5490
5491         if (priv->staging39_rxon.flags & RXON_FLG_BAND_24G_MSK) {
5492                 if (priv->assoc_capability & WLAN_CAPABILITY_SHORT_SLOT_TIME)
5493                         priv->staging39_rxon.flags |= RXON_FLG_SHORT_SLOT_MSK;
5494                 else
5495                         priv->staging39_rxon.flags &= ~RXON_FLG_SHORT_SLOT_MSK;
5496
5497                 if (priv->iw_mode == NL80211_IFTYPE_ADHOC)
5498                         priv->staging39_rxon.flags &= ~RXON_FLG_SHORT_SLOT_MSK;
5499
5500         }
5501
5502         iwl3945_commit_rxon(priv);
5503
5504         switch (priv->iw_mode) {
5505         case NL80211_IFTYPE_STATION:
5506                 iwl3945_rate_scale_init(priv->hw, IWL_AP_ID);
5507                 break;
5508
5509         case NL80211_IFTYPE_ADHOC:
5510
5511                 priv->assoc_id = 1;
5512                 iwl3945_add_station(priv, priv->bssid, 0, 0);
5513                 iwl3945_sync_sta(priv, IWL_STA_ID,
5514                                  (priv->band == IEEE80211_BAND_5GHZ) ?
5515                                  IWL_RATE_6M_PLCP : IWL_RATE_1M_PLCP,
5516                                  CMD_ASYNC);
5517                 iwl3945_rate_scale_init(priv->hw, IWL_STA_ID);
5518                 iwl3945_send_beacon_cmd(priv);
5519
5520                 break;
5521
5522         default:
5523                  IWL_ERR(priv, "%s Should not be called in %d mode\n",
5524                            __func__, priv->iw_mode);
5525                 break;
5526         }
5527
5528         iwl3945_activate_qos(priv, 0);
5529
5530         /* we have just associated, don't start scan too early */
5531         priv->next_scan_jiffies = jiffies + IWL_DELAY_NEXT_SCAN;
5532 }
5533
5534 static void iwl3945_bg_abort_scan(struct work_struct *work)
5535 {
5536         struct iwl_priv *priv = container_of(work, struct iwl_priv, abort_scan);
5537
5538         if (!iwl_is_ready(priv))
5539                 return;
5540
5541         mutex_lock(&priv->mutex);
5542
5543         set_bit(STATUS_SCAN_ABORTING, &priv->status);
5544         iwl3945_send_scan_abort(priv);
5545
5546         mutex_unlock(&priv->mutex);
5547 }
5548
5549 static int iwl3945_mac_config(struct ieee80211_hw *hw, u32 changed);
5550
5551 static void iwl3945_bg_scan_completed(struct work_struct *work)
5552 {
5553         struct iwl_priv *priv =
5554             container_of(work, struct iwl_priv, scan_completed);
5555
5556         IWL_DEBUG(IWL_DL_INFO | IWL_DL_SCAN, "SCAN complete scan\n");
5557
5558         if (test_bit(STATUS_EXIT_PENDING, &priv->status))
5559                 return;
5560
5561         if (test_bit(STATUS_CONF_PENDING, &priv->status))
5562                 iwl3945_mac_config(priv->hw, 0);
5563
5564         ieee80211_scan_completed(priv->hw);
5565
5566         /* Since setting the TXPOWER may have been deferred while
5567          * performing the scan, fire one off */
5568         mutex_lock(&priv->mutex);
5569         iwl3945_hw_reg_send_txpower(priv);
5570         mutex_unlock(&priv->mutex);
5571 }
5572
5573 /*****************************************************************************
5574  *
5575  * mac80211 entry point functions
5576  *
5577  *****************************************************************************/
5578
5579 #define UCODE_READY_TIMEOUT     (2 * HZ)
5580
5581 static int iwl3945_mac_start(struct ieee80211_hw *hw)
5582 {
5583         struct iwl_priv *priv = hw->priv;
5584         int ret;
5585
5586         IWL_DEBUG_MAC80211("enter\n");
5587
5588         /* we should be verifying the device is ready to be opened */
5589         mutex_lock(&priv->mutex);
5590
5591         memset(&priv->staging39_rxon, 0, sizeof(struct iwl3945_rxon_cmd));
5592         /* fetch ucode file from disk, alloc and copy to bus-master buffers ...
5593          * ucode filename and max sizes are card-specific. */
5594
5595         if (!priv->ucode_code.len) {
5596                 ret = iwl3945_read_ucode(priv);
5597                 if (ret) {
5598                         IWL_ERR(priv, "Could not read microcode: %d\n", ret);
5599                         mutex_unlock(&priv->mutex);
5600                         goto out_release_irq;
5601                 }
5602         }
5603
5604         ret = __iwl3945_up(priv);
5605
5606         mutex_unlock(&priv->mutex);
5607
5608         iwl3945_rfkill_set_hw_state(priv);
5609
5610         if (ret)
5611                 goto out_release_irq;
5612
5613         IWL_DEBUG_INFO("Start UP work.\n");
5614
5615         if (test_bit(STATUS_IN_SUSPEND, &priv->status))
5616                 return 0;
5617
5618         /* Wait for START_ALIVE from ucode. Otherwise callbacks from
5619          * mac80211 will not be run successfully. */
5620         ret = wait_event_interruptible_timeout(priv->wait_command_queue,
5621                         test_bit(STATUS_READY, &priv->status),
5622                         UCODE_READY_TIMEOUT);
5623         if (!ret) {
5624                 if (!test_bit(STATUS_READY, &priv->status)) {
5625                         IWL_ERR(priv,
5626                                 "Wait for START_ALIVE timeout after %dms.\n",
5627                                 jiffies_to_msecs(UCODE_READY_TIMEOUT));
5628                         ret = -ETIMEDOUT;
5629                         goto out_release_irq;
5630                 }
5631         }
5632
5633         /* ucode is running and will send rfkill notifications,
5634          * no need to poll the killswitch state anymore */
5635         cancel_delayed_work(&priv->rfkill_poll);
5636
5637         priv->is_open = 1;
5638         IWL_DEBUG_MAC80211("leave\n");
5639         return 0;
5640
5641 out_release_irq:
5642         priv->is_open = 0;
5643         IWL_DEBUG_MAC80211("leave - failed\n");
5644         return ret;
5645 }
5646
5647 static void iwl3945_mac_stop(struct ieee80211_hw *hw)
5648 {
5649         struct iwl_priv *priv = hw->priv;
5650
5651         IWL_DEBUG_MAC80211("enter\n");
5652
5653         if (!priv->is_open) {
5654                 IWL_DEBUG_MAC80211("leave - skip\n");
5655                 return;
5656         }
5657
5658         priv->is_open = 0;
5659
5660         if (iwl_is_ready_rf(priv)) {
5661                 /* stop mac, cancel any scan request and clear
5662                  * RXON_FILTER_ASSOC_MSK BIT
5663                  */
5664                 mutex_lock(&priv->mutex);
5665                 iwl_scan_cancel_timeout(priv, 100);
5666                 mutex_unlock(&priv->mutex);
5667         }
5668
5669         iwl3945_down(priv);
5670
5671         flush_workqueue(priv->workqueue);
5672
5673         /* start polling the killswitch state again */
5674         queue_delayed_work(priv->workqueue, &priv->rfkill_poll,
5675                            round_jiffies_relative(2 * HZ));
5676
5677         IWL_DEBUG_MAC80211("leave\n");
5678 }
5679
5680 static int iwl3945_mac_tx(struct ieee80211_hw *hw, struct sk_buff *skb)
5681 {
5682         struct iwl_priv *priv = hw->priv;
5683
5684         IWL_DEBUG_MAC80211("enter\n");
5685
5686         IWL_DEBUG_TX("dev->xmit(%d bytes) at rate 0x%02x\n", skb->len,
5687                      ieee80211_get_tx_rate(hw, IEEE80211_SKB_CB(skb))->bitrate);
5688
5689         if (iwl3945_tx_skb(priv, skb))
5690                 dev_kfree_skb_any(skb);
5691
5692         IWL_DEBUG_MAC80211("leave\n");
5693         return NETDEV_TX_OK;
5694 }
5695
5696 static int iwl3945_mac_add_interface(struct ieee80211_hw *hw,
5697                                  struct ieee80211_if_init_conf *conf)
5698 {
5699         struct iwl_priv *priv = hw->priv;
5700         unsigned long flags;
5701
5702         IWL_DEBUG_MAC80211("enter: type %d\n", conf->type);
5703
5704         if (priv->vif) {
5705                 IWL_DEBUG_MAC80211("leave - vif != NULL\n");
5706                 return -EOPNOTSUPP;
5707         }
5708
5709         spin_lock_irqsave(&priv->lock, flags);
5710         priv->vif = conf->vif;
5711         priv->iw_mode = conf->type;
5712
5713         spin_unlock_irqrestore(&priv->lock, flags);
5714
5715         mutex_lock(&priv->mutex);
5716
5717         if (conf->mac_addr) {
5718                 IWL_DEBUG_MAC80211("Set: %pM\n", conf->mac_addr);
5719                 memcpy(priv->mac_addr, conf->mac_addr, ETH_ALEN);
5720         }
5721
5722         if (iwl_is_ready(priv))
5723                 iwl3945_set_mode(priv, conf->type);
5724
5725         mutex_unlock(&priv->mutex);
5726
5727         IWL_DEBUG_MAC80211("leave\n");
5728         return 0;
5729 }
5730
5731 /**
5732  * iwl3945_mac_config - mac80211 config callback
5733  *
5734  * We ignore conf->flags & IEEE80211_CONF_SHORT_SLOT_TIME since it seems to
5735  * be set inappropriately and the driver currently sets the hardware up to
5736  * use it whenever needed.
5737  */
5738 static int iwl3945_mac_config(struct ieee80211_hw *hw, u32 changed)
5739 {
5740         struct iwl_priv *priv = hw->priv;
5741         const struct iwl_channel_info *ch_info;
5742         struct ieee80211_conf *conf = &hw->conf;
5743         unsigned long flags;
5744         int ret = 0;
5745
5746         mutex_lock(&priv->mutex);
5747         IWL_DEBUG_MAC80211("enter to channel %d\n", conf->channel->hw_value);
5748
5749         if (!iwl_is_ready(priv)) {
5750                 IWL_DEBUG_MAC80211("leave - not ready\n");
5751                 ret = -EIO;
5752                 goto out;
5753         }
5754
5755         if (unlikely(!iwl3945_mod_params.disable_hw_scan &&
5756                      test_bit(STATUS_SCANNING, &priv->status))) {
5757                 IWL_DEBUG_MAC80211("leave - scanning\n");
5758                 set_bit(STATUS_CONF_PENDING, &priv->status);
5759                 mutex_unlock(&priv->mutex);
5760                 return 0;
5761         }
5762
5763         spin_lock_irqsave(&priv->lock, flags);
5764
5765         ch_info = iwl3945_get_channel_info(priv, conf->channel->band,
5766                                            conf->channel->hw_value);
5767         if (!is_channel_valid(ch_info)) {
5768                 IWL_DEBUG_SCAN("Channel %d [%d] is INVALID for this band.\n",
5769                                conf->channel->hw_value, conf->channel->band);
5770                 IWL_DEBUG_MAC80211("leave - invalid channel\n");
5771                 spin_unlock_irqrestore(&priv->lock, flags);
5772                 ret = -EINVAL;
5773                 goto out;
5774         }
5775
5776         iwl3945_set_rxon_channel(priv, conf->channel->band, conf->channel->hw_value);
5777
5778         iwl3945_set_flags_for_phymode(priv, conf->channel->band);
5779
5780         /* The list of supported rates and rate mask can be different
5781          * for each phymode; since the phymode may have changed, reset
5782          * the rate mask to what mac80211 lists */
5783         iwl3945_set_rate(priv);
5784
5785         spin_unlock_irqrestore(&priv->lock, flags);
5786
5787 #ifdef IEEE80211_CONF_CHANNEL_SWITCH
5788         if (conf->flags & IEEE80211_CONF_CHANNEL_SWITCH) {
5789                 iwl3945_hw_channel_switch(priv, conf->channel);
5790                 goto out;
5791         }
5792 #endif
5793
5794         iwl3945_radio_kill_sw(priv, !conf->radio_enabled);
5795
5796         if (!conf->radio_enabled) {
5797                 IWL_DEBUG_MAC80211("leave - radio disabled\n");
5798                 goto out;
5799         }
5800
5801         if (iwl_is_rfkill(priv)) {
5802                 IWL_DEBUG_MAC80211("leave - RF kill\n");
5803                 ret = -EIO;
5804                 goto out;
5805         }
5806
5807         iwl3945_set_rate(priv);
5808
5809         if (memcmp(&priv->active39_rxon,
5810                    &priv->staging39_rxon, sizeof(priv->staging39_rxon)))
5811                 iwl3945_commit_rxon(priv);
5812         else
5813                 IWL_DEBUG_INFO("No re-sending same RXON configuration.\n");
5814
5815         IWL_DEBUG_MAC80211("leave\n");
5816
5817 out:
5818         clear_bit(STATUS_CONF_PENDING, &priv->status);
5819         mutex_unlock(&priv->mutex);
5820         return ret;
5821 }
5822
5823 static void iwl3945_config_ap(struct iwl_priv *priv)
5824 {
5825         int rc = 0;
5826
5827         if (test_bit(STATUS_EXIT_PENDING, &priv->status))
5828                 return;
5829
5830         /* The following should be done only at AP bring up */
5831         if (!(iwl3945_is_associated(priv))) {
5832
5833                 /* RXON - unassoc (to set timing command) */
5834                 priv->staging39_rxon.filter_flags &= ~RXON_FILTER_ASSOC_MSK;
5835                 iwl3945_commit_rxon(priv);
5836
5837                 /* RXON Timing */
5838                 memset(&priv->rxon_timing, 0, sizeof(struct iwl_rxon_time_cmd));
5839                 iwl3945_setup_rxon_timing(priv);
5840                 rc = iwl_send_cmd_pdu(priv, REPLY_RXON_TIMING,
5841                                       sizeof(priv->rxon_timing),
5842                                       &priv->rxon_timing);
5843                 if (rc)
5844                         IWL_WARN(priv, "REPLY_RXON_TIMING failed - "
5845                                         "Attempting to continue.\n");
5846
5847                 /* FIXME: what should be the assoc_id for AP? */
5848                 priv->staging39_rxon.assoc_id = cpu_to_le16(priv->assoc_id);
5849                 if (priv->assoc_capability & WLAN_CAPABILITY_SHORT_PREAMBLE)
5850                         priv->staging39_rxon.flags |=
5851                                 RXON_FLG_SHORT_PREAMBLE_MSK;
5852                 else
5853                         priv->staging39_rxon.flags &=
5854                                 ~RXON_FLG_SHORT_PREAMBLE_MSK;
5855
5856                 if (priv->staging39_rxon.flags & RXON_FLG_BAND_24G_MSK) {
5857                         if (priv->assoc_capability &
5858                                 WLAN_CAPABILITY_SHORT_SLOT_TIME)
5859                                 priv->staging39_rxon.flags |=
5860                                         RXON_FLG_SHORT_SLOT_MSK;
5861                         else
5862                                 priv->staging39_rxon.flags &=
5863                                         ~RXON_FLG_SHORT_SLOT_MSK;
5864
5865                         if (priv->iw_mode == NL80211_IFTYPE_ADHOC)
5866                                 priv->staging39_rxon.flags &=
5867                                         ~RXON_FLG_SHORT_SLOT_MSK;
5868                 }
5869                 /* restore RXON assoc */
5870                 priv->staging39_rxon.filter_flags |= RXON_FILTER_ASSOC_MSK;
5871                 iwl3945_commit_rxon(priv);
5872                 iwl3945_add_station(priv, iwl_bcast_addr, 0, 0);
5873         }
5874         iwl3945_send_beacon_cmd(priv);
5875
5876         /* FIXME - we need to add code here to detect a totally new
5877          * configuration, reset the AP, unassoc, rxon timing, assoc,
5878          * clear sta table, add BCAST sta... */
5879 }
5880
5881 static int iwl3945_mac_config_interface(struct ieee80211_hw *hw,
5882                                         struct ieee80211_vif *vif,
5883                                         struct ieee80211_if_conf *conf)
5884 {
5885         struct iwl_priv *priv = hw->priv;
5886         int rc;
5887
5888         if (conf == NULL)
5889                 return -EIO;
5890
5891         if (priv->vif != vif) {
5892                 IWL_DEBUG_MAC80211("leave - priv->vif != vif\n");
5893                 return 0;
5894         }
5895
5896         /* handle this temporarily here */
5897         if (priv->iw_mode == NL80211_IFTYPE_ADHOC &&
5898             conf->changed & IEEE80211_IFCC_BEACON) {
5899                 struct sk_buff *beacon = ieee80211_beacon_get(hw, vif);
5900                 if (!beacon)
5901                         return -ENOMEM;
5902                 mutex_lock(&priv->mutex);
5903                 rc = iwl3945_mac_beacon_update(hw, beacon);
5904                 mutex_unlock(&priv->mutex);
5905                 if (rc)
5906                         return rc;
5907         }
5908
5909         if (!iwl_is_alive(priv))
5910                 return -EAGAIN;
5911
5912         mutex_lock(&priv->mutex);
5913
5914         if (conf->bssid)
5915                 IWL_DEBUG_MAC80211("bssid: %pM\n", conf->bssid);
5916
5917 /*
5918  * very dubious code was here; the probe filtering flag is never set:
5919  *
5920         if (unlikely(test_bit(STATUS_SCANNING, &priv->status)) &&
5921             !(priv->hw->flags & IEEE80211_HW_NO_PROBE_FILTERING)) {
5922  */
5923
5924         if (priv->iw_mode == NL80211_IFTYPE_AP) {
5925                 if (!conf->bssid) {
5926                         conf->bssid = priv->mac_addr;
5927                         memcpy(priv->bssid, priv->mac_addr, ETH_ALEN);
5928                         IWL_DEBUG_MAC80211("bssid was set to: %pM\n",
5929                                            conf->bssid);
5930                 }
5931                 if (priv->ibss_beacon)
5932                         dev_kfree_skb(priv->ibss_beacon);
5933
5934                 priv->ibss_beacon = ieee80211_beacon_get(hw, vif);
5935         }
5936
5937         if (iwl_is_rfkill(priv))
5938                 goto done;
5939
5940         if (conf->bssid && !is_zero_ether_addr(conf->bssid) &&
5941             !is_multicast_ether_addr(conf->bssid)) {
5942                 /* If there is currently a HW scan going on in the background
5943                  * then we need to cancel it else the RXON below will fail. */
5944                 if (iwl_scan_cancel_timeout(priv, 100)) {
5945                         IWL_WARN(priv, "Aborted scan still in progress "
5946                                     "after 100ms\n");
5947                         IWL_DEBUG_MAC80211("leaving - scan abort failed.\n");
5948                         mutex_unlock(&priv->mutex);
5949                         return -EAGAIN;
5950                 }
5951                 memcpy(priv->staging39_rxon.bssid_addr, conf->bssid, ETH_ALEN);
5952
5953                 /* TODO: Audit driver for usage of these members and see
5954                  * if mac80211 deprecates them (priv->bssid looks like it
5955                  * shouldn't be there, but I haven't scanned the IBSS code
5956                  * to verify) - jpk */
5957                 memcpy(priv->bssid, conf->bssid, ETH_ALEN);
5958
5959                 if (priv->iw_mode == NL80211_IFTYPE_AP)
5960                         iwl3945_config_ap(priv);
5961                 else {
5962                         rc = iwl3945_commit_rxon(priv);
5963                         if ((priv->iw_mode == NL80211_IFTYPE_STATION) && rc)
5964                                 iwl3945_add_station(priv,
5965                                         priv->active39_rxon.bssid_addr, 1, 0);
5966                 }
5967
5968         } else {
5969                 iwl_scan_cancel_timeout(priv, 100);
5970                 priv->staging39_rxon.filter_flags &= ~RXON_FILTER_ASSOC_MSK;
5971                 iwl3945_commit_rxon(priv);
5972         }
5973
5974  done:
5975         IWL_DEBUG_MAC80211("leave\n");
5976         mutex_unlock(&priv->mutex);
5977
5978         return 0;
5979 }
5980
5981 static void iwl3945_configure_filter(struct ieee80211_hw *hw,
5982                                  unsigned int changed_flags,
5983                                  unsigned int *total_flags,
5984                                  int mc_count, struct dev_addr_list *mc_list)
5985 {
5986         struct iwl_priv *priv = hw->priv;
5987         __le32 *filter_flags = &priv->staging39_rxon.filter_flags;
5988
5989         IWL_DEBUG_MAC80211("Enter: changed: 0x%x, total: 0x%x\n",
5990                         changed_flags, *total_flags);
5991
5992         if (changed_flags & (FIF_OTHER_BSS | FIF_PROMISC_IN_BSS)) {
5993                 if (*total_flags & (FIF_OTHER_BSS | FIF_PROMISC_IN_BSS))
5994                         *filter_flags |= RXON_FILTER_PROMISC_MSK;
5995                 else
5996                         *filter_flags &= ~RXON_FILTER_PROMISC_MSK;
5997         }
5998         if (changed_flags & FIF_ALLMULTI) {
5999                 if (*total_flags & FIF_ALLMULTI)
6000                         *filter_flags |= RXON_FILTER_ACCEPT_GRP_MSK;
6001                 else
6002                         *filter_flags &= ~RXON_FILTER_ACCEPT_GRP_MSK;
6003         }
6004         if (changed_flags & FIF_CONTROL) {
6005                 if (*total_flags & FIF_CONTROL)
6006                         *filter_flags |= RXON_FILTER_CTL2HOST_MSK;
6007                 else
6008                         *filter_flags &= ~RXON_FILTER_CTL2HOST_MSK;
6009         }
6010         if (changed_flags & FIF_BCN_PRBRESP_PROMISC) {
6011                 if (*total_flags & FIF_BCN_PRBRESP_PROMISC)
6012                         *filter_flags |= RXON_FILTER_BCON_AWARE_MSK;
6013                 else
6014                         *filter_flags &= ~RXON_FILTER_BCON_AWARE_MSK;
6015         }
6016
6017         /* We avoid iwl_commit_rxon here to commit the new filter flags
6018          * since mac80211 will call ieee80211_hw_config immediately.
6019          * (mc_list is not supported at this time). Otherwise, we need to
6020          * queue a background iwl_commit_rxon work.
6021          */
6022
6023         *total_flags &= FIF_OTHER_BSS | FIF_ALLMULTI | FIF_PROMISC_IN_BSS |
6024                         FIF_BCN_PRBRESP_PROMISC | FIF_CONTROL;
6025 }
6026
6027 static void iwl3945_mac_remove_interface(struct ieee80211_hw *hw,
6028                                      struct ieee80211_if_init_conf *conf)
6029 {
6030         struct iwl_priv *priv = hw->priv;
6031
6032         IWL_DEBUG_MAC80211("enter\n");
6033
6034       &n