iwlwifi: document 4965 Tx scheduler
[linux-2.6.git] / drivers / net / wireless / iwlwifi / iwl4965-base.c
1 /******************************************************************************
2  *
3  * Copyright(c) 2003 - 2007 Intel Corporation. All rights reserved.
4  *
5  * Portions of this file are derived from the ipw3945 project, as well
6  * as portions of the ieee80211 subsystem header files.
7  *
8  * This program is free software; you can redistribute it and/or modify it
9  * under the terms of version 2 of the GNU General Public License as
10  * published by the Free Software Foundation.
11  *
12  * This program is distributed in the hope that it will be useful, but WITHOUT
13  * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
14  * FITNESS FOR A PARTICULAR PURPOSE.  See the GNU General Public License for
15  * more details.
16  *
17  * You should have received a copy of the GNU General Public License along with
18  * this program; if not, write to the Free Software Foundation, Inc.,
19  * 51 Franklin Street, Fifth Floor, Boston, MA 02110, USA
20  *
21  * The full GNU General Public License is included in this distribution in the
22  * file called LICENSE.
23  *
24  * Contact Information:
25  * James P. Ketrenos <ipw2100-admin@linux.intel.com>
26  * Intel Corporation, 5200 N.E. Elam Young Parkway, Hillsboro, OR 97124-6497
27  *
28  *****************************************************************************/
29
30 #include <linux/kernel.h>
31 #include <linux/module.h>
32 #include <linux/version.h>
33 #include <linux/init.h>
34 #include <linux/pci.h>
35 #include <linux/dma-mapping.h>
36 #include <linux/delay.h>
37 #include <linux/skbuff.h>
38 #include <linux/netdevice.h>
39 #include <linux/wireless.h>
40 #include <linux/firmware.h>
41 #include <linux/etherdevice.h>
42 #include <linux/if_arp.h>
43
44 #include <net/ieee80211_radiotap.h>
45 #include <net/mac80211.h>
46
47 #include <asm/div64.h>
48
49 #include "iwl-4965.h"
50 #include "iwl-helpers.h"
51
52 #ifdef CONFIG_IWL4965_DEBUG
53 u32 iwl4965_debug_level;
54 #endif
55
56 static int iwl4965_tx_queue_update_write_ptr(struct iwl4965_priv *priv,
57                                   struct iwl4965_tx_queue *txq);
58
59 /******************************************************************************
60  *
61  * module boiler plate
62  *
63  ******************************************************************************/
64
65 /* module parameters */
66 static int iwl4965_param_disable_hw_scan; /* def: 0 = use 4965's h/w scan */
67 static int iwl4965_param_debug;    /* def: 0 = minimal debug log messages */
68 static int iwl4965_param_disable;  /* def: enable radio */
69 static int iwl4965_param_antenna;  /* def: 0 = both antennas (use diversity) */
70 int iwl4965_param_hwcrypto;        /* def: using software encryption */
71 static int iwl4965_param_qos_enable = 1; /* def: 1 = use quality of service */
72 int iwl4965_param_queues_num = IWL_MAX_NUM_QUEUES; /* def: 16 Tx queues */
73
74 /*
75  * module name, copyright, version, etc.
76  * NOTE: DRV_NAME is defined in iwlwifi.h for use by iwl-debug.h and printk
77  */
78
79 #define DRV_DESCRIPTION "Intel(R) Wireless WiFi Link 4965AGN driver for Linux"
80
81 #ifdef CONFIG_IWL4965_DEBUG
82 #define VD "d"
83 #else
84 #define VD
85 #endif
86
87 #ifdef CONFIG_IWL4965_SPECTRUM_MEASUREMENT
88 #define VS "s"
89 #else
90 #define VS
91 #endif
92
93 #define IWLWIFI_VERSION "1.1.19k" VD VS
94 #define DRV_COPYRIGHT   "Copyright(c) 2003-2007 Intel Corporation"
95 #define DRV_VERSION     IWLWIFI_VERSION
96
97 /* Change firmware file name, using "-" and incrementing number,
98  *   *only* when uCode interface or architecture changes so that it
99  *   is not compatible with earlier drivers.
100  * This number will also appear in << 8 position of 1st dword of uCode file */
101 #define IWL4965_UCODE_API "-1"
102
103 MODULE_DESCRIPTION(DRV_DESCRIPTION);
104 MODULE_VERSION(DRV_VERSION);
105 MODULE_AUTHOR(DRV_COPYRIGHT);
106 MODULE_LICENSE("GPL");
107
108 __le16 *ieee80211_get_qos_ctrl(struct ieee80211_hdr *hdr)
109 {
110         u16 fc = le16_to_cpu(hdr->frame_control);
111         int hdr_len = ieee80211_get_hdrlen(fc);
112
113         if ((fc & 0x00cc) == (IEEE80211_STYPE_QOS_DATA | IEEE80211_FTYPE_DATA))
114                 return (__le16 *) ((u8 *) hdr + hdr_len - QOS_CONTROL_LEN);
115         return NULL;
116 }
117
118 static const struct ieee80211_hw_mode *iwl4965_get_hw_mode(
119                 struct iwl4965_priv *priv, int mode)
120 {
121         int i;
122
123         for (i = 0; i < 3; i++)
124                 if (priv->modes[i].mode == mode)
125                         return &priv->modes[i];
126
127         return NULL;
128 }
129
130 static int iwl4965_is_empty_essid(const char *essid, int essid_len)
131 {
132         /* Single white space is for Linksys APs */
133         if (essid_len == 1 && essid[0] == ' ')
134                 return 1;
135
136         /* Otherwise, if the entire essid is 0, we assume it is hidden */
137         while (essid_len) {
138                 essid_len--;
139                 if (essid[essid_len] != '\0')
140                         return 0;
141         }
142
143         return 1;
144 }
145
146 static const char *iwl4965_escape_essid(const char *essid, u8 essid_len)
147 {
148         static char escaped[IW_ESSID_MAX_SIZE * 2 + 1];
149         const char *s = essid;
150         char *d = escaped;
151
152         if (iwl4965_is_empty_essid(essid, essid_len)) {
153                 memcpy(escaped, "<hidden>", sizeof("<hidden>"));
154                 return escaped;
155         }
156
157         essid_len = min(essid_len, (u8) IW_ESSID_MAX_SIZE);
158         while (essid_len--) {
159                 if (*s == '\0') {
160                         *d++ = '\\';
161                         *d++ = '0';
162                         s++;
163                 } else
164                         *d++ = *s++;
165         }
166         *d = '\0';
167         return escaped;
168 }
169
170 static void iwl4965_print_hex_dump(int level, void *p, u32 len)
171 {
172 #ifdef CONFIG_IWL4965_DEBUG
173         if (!(iwl4965_debug_level & level))
174                 return;
175
176         print_hex_dump(KERN_DEBUG, "iwl data: ", DUMP_PREFIX_OFFSET, 16, 1,
177                         p, len, 1);
178 #endif
179 }
180
181 /*************** DMA-QUEUE-GENERAL-FUNCTIONS  *****
182  * DMA services
183  *
184  * Theory of operation
185  *
186  * A Tx or Rx queue resides in host DRAM, and is comprised of a circular buffer
187  * of buffer descriptors, each of which points to one or more data buffers for
188  * the device to read from or fill.  Driver and device exchange status of each
189  * queue via "read" and "write" pointers.  Driver keeps minimum of 2 empty
190  * entries in each circular buffer, to protect against confusing empty and full
191  * queue states.
192  *
193  * The device reads or writes the data in the queues via the device's several
194  * DMA/FIFO channels.  Each queue is mapped to a single DMA channel.
195  *
196  * For Tx queue, there are low mark and high mark limits. If, after queuing
197  * the packet for Tx, free space become < low mark, Tx queue stopped. When
198  * reclaiming packets (on 'tx done IRQ), if free space become > high mark,
199  * Tx queue resumed.
200  *
201  * The 4965 operates with up to 17 queues:  One receive queue, one transmit
202  * queue (#4) for sending commands to the device firmware, and 15 other
203  * Tx queues that may be mapped to prioritized Tx DMA/FIFO channels.
204  *
205  * See more detailed info in iwl-4965-hw.h.
206  ***************************************************/
207
208 static int iwl4965_queue_space(const struct iwl4965_queue *q)
209 {
210         int s = q->read_ptr - q->write_ptr;
211
212         if (q->read_ptr > q->write_ptr)
213                 s -= q->n_bd;
214
215         if (s <= 0)
216                 s += q->n_window;
217         /* keep some reserve to not confuse empty and full situations */
218         s -= 2;
219         if (s < 0)
220                 s = 0;
221         return s;
222 }
223
224 /**
225  * iwl4965_queue_inc_wrap - increment queue index, wrap back to beginning
226  * @index -- current index
227  * @n_bd -- total number of entries in queue (must be power of 2)
228  */
229 static inline int iwl4965_queue_inc_wrap(int index, int n_bd)
230 {
231         return ++index & (n_bd - 1);
232 }
233
234 /**
235  * iwl4965_queue_dec_wrap - decrement queue index, wrap back to end
236  * @index -- current index
237  * @n_bd -- total number of entries in queue (must be power of 2)
238  */
239 static inline int iwl4965_queue_dec_wrap(int index, int n_bd)
240 {
241         return --index & (n_bd - 1);
242 }
243
244 static inline int x2_queue_used(const struct iwl4965_queue *q, int i)
245 {
246         return q->write_ptr > q->read_ptr ?
247                 (i >= q->read_ptr && i < q->write_ptr) :
248                 !(i < q->read_ptr && i >= q->write_ptr);
249 }
250
251 static inline u8 get_cmd_index(struct iwl4965_queue *q, u32 index, int is_huge)
252 {
253         /* This is for scan command, the big buffer at end of command array */
254         if (is_huge)
255                 return q->n_window;     /* must be power of 2 */
256
257         /* Otherwise, use normal size buffers */
258         return index & (q->n_window - 1);
259 }
260
261 /**
262  * iwl4965_queue_init - Initialize queue's high/low-water and read/write indexes
263  */
264 static int iwl4965_queue_init(struct iwl4965_priv *priv, struct iwl4965_queue *q,
265                           int count, int slots_num, u32 id)
266 {
267         q->n_bd = count;
268         q->n_window = slots_num;
269         q->id = id;
270
271         /* count must be power-of-two size, otherwise iwl4965_queue_inc_wrap
272          * and iwl4965_queue_dec_wrap are broken. */
273         BUG_ON(!is_power_of_2(count));
274
275         /* slots_num must be power-of-two size, otherwise
276          * get_cmd_index is broken. */
277         BUG_ON(!is_power_of_2(slots_num));
278
279         q->low_mark = q->n_window / 4;
280         if (q->low_mark < 4)
281                 q->low_mark = 4;
282
283         q->high_mark = q->n_window / 8;
284         if (q->high_mark < 2)
285                 q->high_mark = 2;
286
287         q->write_ptr = q->read_ptr = 0;
288
289         return 0;
290 }
291
292 /**
293  * iwl4965_tx_queue_alloc - Alloc driver data and TFD CB for one Tx/cmd queue
294  */
295 static int iwl4965_tx_queue_alloc(struct iwl4965_priv *priv,
296                               struct iwl4965_tx_queue *txq, u32 id)
297 {
298         struct pci_dev *dev = priv->pci_dev;
299
300         /* Driver private data, only for Tx (not command) queues,
301          * not shared with device. */
302         if (id != IWL_CMD_QUEUE_NUM) {
303                 txq->txb = kmalloc(sizeof(txq->txb[0]) *
304                                    TFD_QUEUE_SIZE_MAX, GFP_KERNEL);
305                 if (!txq->txb) {
306                         IWL_ERROR("kmalloc for auxiliary BD "
307                                   "structures failed\n");
308                         goto error;
309                 }
310         } else
311                 txq->txb = NULL;
312
313         /* Circular buffer of transmit frame descriptors (TFDs),
314          * shared with device */
315         txq->bd = pci_alloc_consistent(dev,
316                         sizeof(txq->bd[0]) * TFD_QUEUE_SIZE_MAX,
317                         &txq->q.dma_addr);
318
319         if (!txq->bd) {
320                 IWL_ERROR("pci_alloc_consistent(%zd) failed\n",
321                           sizeof(txq->bd[0]) * TFD_QUEUE_SIZE_MAX);
322                 goto error;
323         }
324         txq->q.id = id;
325
326         return 0;
327
328  error:
329         if (txq->txb) {
330                 kfree(txq->txb);
331                 txq->txb = NULL;
332         }
333
334         return -ENOMEM;
335 }
336
337 /**
338  * iwl4965_tx_queue_init - Allocate and initialize one tx/cmd queue
339  */
340 int iwl4965_tx_queue_init(struct iwl4965_priv *priv,
341                       struct iwl4965_tx_queue *txq, int slots_num, u32 txq_id)
342 {
343         struct pci_dev *dev = priv->pci_dev;
344         int len;
345         int rc = 0;
346
347         /*
348          * Alloc buffer array for commands (Tx or other types of commands).
349          * For the command queue (#4), allocate command space + one big
350          * command for scan, since scan command is very huge; the system will
351          * not have two scans at the same time, so only one is needed.
352          * For data Tx queues (all other queues), no super-size command
353          * space is needed.
354          */
355         len = sizeof(struct iwl4965_cmd) * slots_num;
356         if (txq_id == IWL_CMD_QUEUE_NUM)
357                 len +=  IWL_MAX_SCAN_SIZE;
358         txq->cmd = pci_alloc_consistent(dev, len, &txq->dma_addr_cmd);
359         if (!txq->cmd)
360                 return -ENOMEM;
361
362         /* Alloc driver data array and TFD circular buffer */
363         rc = iwl4965_tx_queue_alloc(priv, txq, txq_id);
364         if (rc) {
365                 pci_free_consistent(dev, len, txq->cmd, txq->dma_addr_cmd);
366
367                 return -ENOMEM;
368         }
369         txq->need_update = 0;
370
371         /* TFD_QUEUE_SIZE_MAX must be power-of-two size, otherwise
372          * iwl4965_queue_inc_wrap and iwl4965_queue_dec_wrap are broken. */
373         BUILD_BUG_ON(TFD_QUEUE_SIZE_MAX & (TFD_QUEUE_SIZE_MAX - 1));
374
375         /* Initialize queue's high/low-water marks, and head/tail indexes */
376         iwl4965_queue_init(priv, &txq->q, TFD_QUEUE_SIZE_MAX, slots_num, txq_id);
377
378         /* Tell device where to find queue */
379         iwl4965_hw_tx_queue_init(priv, txq);
380
381         return 0;
382 }
383
384 /**
385  * iwl4965_tx_queue_free - Deallocate DMA queue.
386  * @txq: Transmit queue to deallocate.
387  *
388  * Empty queue by removing and destroying all BD's.
389  * Free all buffers.
390  * 0-fill, but do not free "txq" descriptor structure.
391  */
392 void iwl4965_tx_queue_free(struct iwl4965_priv *priv, struct iwl4965_tx_queue *txq)
393 {
394         struct iwl4965_queue *q = &txq->q;
395         struct pci_dev *dev = priv->pci_dev;
396         int len;
397
398         if (q->n_bd == 0)
399                 return;
400
401         /* first, empty all BD's */
402         for (; q->write_ptr != q->read_ptr;
403              q->read_ptr = iwl4965_queue_inc_wrap(q->read_ptr, q->n_bd))
404                 iwl4965_hw_txq_free_tfd(priv, txq);
405
406         len = sizeof(struct iwl4965_cmd) * q->n_window;
407         if (q->id == IWL_CMD_QUEUE_NUM)
408                 len += IWL_MAX_SCAN_SIZE;
409
410         /* De-alloc array of command/tx buffers */
411         pci_free_consistent(dev, len, txq->cmd, txq->dma_addr_cmd);
412
413         /* De-alloc circular buffer of TFDs */
414         if (txq->q.n_bd)
415                 pci_free_consistent(dev, sizeof(struct iwl4965_tfd_frame) *
416                                     txq->q.n_bd, txq->bd, txq->q.dma_addr);
417
418         /* De-alloc array of per-TFD driver data */
419         if (txq->txb) {
420                 kfree(txq->txb);
421                 txq->txb = NULL;
422         }
423
424         /* 0-fill queue descriptor structure */
425         memset(txq, 0, sizeof(*txq));
426 }
427
428 const u8 iwl4965_broadcast_addr[ETH_ALEN] = { 0xFF, 0xFF, 0xFF, 0xFF, 0xFF, 0xFF };
429
430 /*************** STATION TABLE MANAGEMENT ****
431  * mac80211 should be examined to determine if sta_info is duplicating
432  * the functionality provided here
433  */
434
435 /**************************************************************/
436
437 #if 0 /* temporary disable till we add real remove station */
438 /**
439  * iwl4965_remove_station - Remove driver's knowledge of station.
440  *
441  * NOTE:  This does not remove station from device's station table.
442  */
443 static u8 iwl4965_remove_station(struct iwl4965_priv *priv, const u8 *addr, int is_ap)
444 {
445         int index = IWL_INVALID_STATION;
446         int i;
447         unsigned long flags;
448
449         spin_lock_irqsave(&priv->sta_lock, flags);
450
451         if (is_ap)
452                 index = IWL_AP_ID;
453         else if (is_broadcast_ether_addr(addr))
454                 index = priv->hw_setting.bcast_sta_id;
455         else
456                 for (i = IWL_STA_ID; i < priv->hw_setting.max_stations; i++)
457                         if (priv->stations[i].used &&
458                             !compare_ether_addr(priv->stations[i].sta.sta.addr,
459                                                 addr)) {
460                                 index = i;
461                                 break;
462                         }
463
464         if (unlikely(index == IWL_INVALID_STATION))
465                 goto out;
466
467         if (priv->stations[index].used) {
468                 priv->stations[index].used = 0;
469                 priv->num_stations--;
470         }
471
472         BUG_ON(priv->num_stations < 0);
473
474 out:
475         spin_unlock_irqrestore(&priv->sta_lock, flags);
476         return 0;
477 }
478 #endif
479
480 /**
481  * iwl4965_clear_stations_table - Clear the driver's station table
482  *
483  * NOTE:  This does not clear or otherwise alter the device's station table.
484  */
485 static void iwl4965_clear_stations_table(struct iwl4965_priv *priv)
486 {
487         unsigned long flags;
488
489         spin_lock_irqsave(&priv->sta_lock, flags);
490
491         priv->num_stations = 0;
492         memset(priv->stations, 0, sizeof(priv->stations));
493
494         spin_unlock_irqrestore(&priv->sta_lock, flags);
495 }
496
497 /**
498  * iwl4965_add_station_flags - Add station to tables in driver and device
499  */
500 u8 iwl4965_add_station_flags(struct iwl4965_priv *priv, const u8 *addr, int is_ap, u8 flags)
501 {
502         int i;
503         int index = IWL_INVALID_STATION;
504         struct iwl4965_station_entry *station;
505         unsigned long flags_spin;
506         DECLARE_MAC_BUF(mac);
507
508         spin_lock_irqsave(&priv->sta_lock, flags_spin);
509         if (is_ap)
510                 index = IWL_AP_ID;
511         else if (is_broadcast_ether_addr(addr))
512                 index = priv->hw_setting.bcast_sta_id;
513         else
514                 for (i = IWL_STA_ID; i < priv->hw_setting.max_stations; i++) {
515                         if (!compare_ether_addr(priv->stations[i].sta.sta.addr,
516                                                 addr)) {
517                                 index = i;
518                                 break;
519                         }
520
521                         if (!priv->stations[i].used &&
522                             index == IWL_INVALID_STATION)
523                                 index = i;
524                 }
525
526
527         /* These two conditions have the same outcome, but keep them separate
528           since they have different meanings */
529         if (unlikely(index == IWL_INVALID_STATION)) {
530                 spin_unlock_irqrestore(&priv->sta_lock, flags_spin);
531                 return index;
532         }
533
534         if (priv->stations[index].used &&
535             !compare_ether_addr(priv->stations[index].sta.sta.addr, addr)) {
536                 spin_unlock_irqrestore(&priv->sta_lock, flags_spin);
537                 return index;
538         }
539
540
541         IWL_DEBUG_ASSOC("Add STA ID %d: %s\n", index, print_mac(mac, addr));
542         station = &priv->stations[index];
543         station->used = 1;
544         priv->num_stations++;
545
546         /* Set up the REPLY_ADD_STA command to send to device */
547         memset(&station->sta, 0, sizeof(struct iwl4965_addsta_cmd));
548         memcpy(station->sta.sta.addr, addr, ETH_ALEN);
549         station->sta.mode = 0;
550         station->sta.sta.sta_id = index;
551         station->sta.station_flags = 0;
552
553 #ifdef CONFIG_IWL4965_HT
554         /* BCAST station and IBSS stations do not work in HT mode */
555         if (index != priv->hw_setting.bcast_sta_id &&
556             priv->iw_mode != IEEE80211_IF_TYPE_IBSS)
557                 iwl4965_set_ht_add_station(priv, index);
558 #endif /*CONFIG_IWL4965_HT*/
559
560         spin_unlock_irqrestore(&priv->sta_lock, flags_spin);
561
562         /* Add station to device's station table */
563         iwl4965_send_add_station(priv, &station->sta, flags);
564         return index;
565
566 }
567
568 /*************** DRIVER STATUS FUNCTIONS   *****/
569
570 static inline int iwl4965_is_ready(struct iwl4965_priv *priv)
571 {
572         /* The adapter is 'ready' if READY and GEO_CONFIGURED bits are
573          * set but EXIT_PENDING is not */
574         return test_bit(STATUS_READY, &priv->status) &&
575                test_bit(STATUS_GEO_CONFIGURED, &priv->status) &&
576                !test_bit(STATUS_EXIT_PENDING, &priv->status);
577 }
578
579 static inline int iwl4965_is_alive(struct iwl4965_priv *priv)
580 {
581         return test_bit(STATUS_ALIVE, &priv->status);
582 }
583
584 static inline int iwl4965_is_init(struct iwl4965_priv *priv)
585 {
586         return test_bit(STATUS_INIT, &priv->status);
587 }
588
589 static inline int iwl4965_is_rfkill(struct iwl4965_priv *priv)
590 {
591         return test_bit(STATUS_RF_KILL_HW, &priv->status) ||
592                test_bit(STATUS_RF_KILL_SW, &priv->status);
593 }
594
595 static inline int iwl4965_is_ready_rf(struct iwl4965_priv *priv)
596 {
597
598         if (iwl4965_is_rfkill(priv))
599                 return 0;
600
601         return iwl4965_is_ready(priv);
602 }
603
604 /*************** HOST COMMAND QUEUE FUNCTIONS   *****/
605
606 #define IWL_CMD(x) case x : return #x
607
608 static const char *get_cmd_string(u8 cmd)
609 {
610         switch (cmd) {
611                 IWL_CMD(REPLY_ALIVE);
612                 IWL_CMD(REPLY_ERROR);
613                 IWL_CMD(REPLY_RXON);
614                 IWL_CMD(REPLY_RXON_ASSOC);
615                 IWL_CMD(REPLY_QOS_PARAM);
616                 IWL_CMD(REPLY_RXON_TIMING);
617                 IWL_CMD(REPLY_ADD_STA);
618                 IWL_CMD(REPLY_REMOVE_STA);
619                 IWL_CMD(REPLY_REMOVE_ALL_STA);
620                 IWL_CMD(REPLY_TX);
621                 IWL_CMD(REPLY_RATE_SCALE);
622                 IWL_CMD(REPLY_LEDS_CMD);
623                 IWL_CMD(REPLY_TX_LINK_QUALITY_CMD);
624                 IWL_CMD(RADAR_NOTIFICATION);
625                 IWL_CMD(REPLY_QUIET_CMD);
626                 IWL_CMD(REPLY_CHANNEL_SWITCH);
627                 IWL_CMD(CHANNEL_SWITCH_NOTIFICATION);
628                 IWL_CMD(REPLY_SPECTRUM_MEASUREMENT_CMD);
629                 IWL_CMD(SPECTRUM_MEASURE_NOTIFICATION);
630                 IWL_CMD(POWER_TABLE_CMD);
631                 IWL_CMD(PM_SLEEP_NOTIFICATION);
632                 IWL_CMD(PM_DEBUG_STATISTIC_NOTIFIC);
633                 IWL_CMD(REPLY_SCAN_CMD);
634                 IWL_CMD(REPLY_SCAN_ABORT_CMD);
635                 IWL_CMD(SCAN_START_NOTIFICATION);
636                 IWL_CMD(SCAN_RESULTS_NOTIFICATION);
637                 IWL_CMD(SCAN_COMPLETE_NOTIFICATION);
638                 IWL_CMD(BEACON_NOTIFICATION);
639                 IWL_CMD(REPLY_TX_BEACON);
640                 IWL_CMD(WHO_IS_AWAKE_NOTIFICATION);
641                 IWL_CMD(QUIET_NOTIFICATION);
642                 IWL_CMD(REPLY_TX_PWR_TABLE_CMD);
643                 IWL_CMD(MEASURE_ABORT_NOTIFICATION);
644                 IWL_CMD(REPLY_BT_CONFIG);
645                 IWL_CMD(REPLY_STATISTICS_CMD);
646                 IWL_CMD(STATISTICS_NOTIFICATION);
647                 IWL_CMD(REPLY_CARD_STATE_CMD);
648                 IWL_CMD(CARD_STATE_NOTIFICATION);
649                 IWL_CMD(MISSED_BEACONS_NOTIFICATION);
650                 IWL_CMD(REPLY_CT_KILL_CONFIG_CMD);
651                 IWL_CMD(SENSITIVITY_CMD);
652                 IWL_CMD(REPLY_PHY_CALIBRATION_CMD);
653                 IWL_CMD(REPLY_RX_PHY_CMD);
654                 IWL_CMD(REPLY_RX_MPDU_CMD);
655                 IWL_CMD(REPLY_4965_RX);
656                 IWL_CMD(REPLY_COMPRESSED_BA);
657         default:
658                 return "UNKNOWN";
659
660         }
661 }
662
663 #define HOST_COMPLETE_TIMEOUT (HZ / 2)
664
665 /**
666  * iwl4965_enqueue_hcmd - enqueue a uCode command
667  * @priv: device private data point
668  * @cmd: a point to the ucode command structure
669  *
670  * The function returns < 0 values to indicate the operation is
671  * failed. On success, it turns the index (> 0) of command in the
672  * command queue.
673  */
674 static int iwl4965_enqueue_hcmd(struct iwl4965_priv *priv, struct iwl4965_host_cmd *cmd)
675 {
676         struct iwl4965_tx_queue *txq = &priv->txq[IWL_CMD_QUEUE_NUM];
677         struct iwl4965_queue *q = &txq->q;
678         struct iwl4965_tfd_frame *tfd;
679         u32 *control_flags;
680         struct iwl4965_cmd *out_cmd;
681         u32 idx;
682         u16 fix_size = (u16)(cmd->len + sizeof(out_cmd->hdr));
683         dma_addr_t phys_addr;
684         int ret;
685         unsigned long flags;
686
687         /* If any of the command structures end up being larger than
688          * the TFD_MAX_PAYLOAD_SIZE, and it sent as a 'small' command then
689          * we will need to increase the size of the TFD entries */
690         BUG_ON((fix_size > TFD_MAX_PAYLOAD_SIZE) &&
691                !(cmd->meta.flags & CMD_SIZE_HUGE));
692
693         if (iwl4965_queue_space(q) < ((cmd->meta.flags & CMD_ASYNC) ? 2 : 1)) {
694                 IWL_ERROR("No space for Tx\n");
695                 return -ENOSPC;
696         }
697
698         spin_lock_irqsave(&priv->hcmd_lock, flags);
699
700         tfd = &txq->bd[q->write_ptr];
701         memset(tfd, 0, sizeof(*tfd));
702
703         control_flags = (u32 *) tfd;
704
705         idx = get_cmd_index(q, q->write_ptr, cmd->meta.flags & CMD_SIZE_HUGE);
706         out_cmd = &txq->cmd[idx];
707
708         out_cmd->hdr.cmd = cmd->id;
709         memcpy(&out_cmd->meta, &cmd->meta, sizeof(cmd->meta));
710         memcpy(&out_cmd->cmd.payload, cmd->data, cmd->len);
711
712         /* At this point, the out_cmd now has all of the incoming cmd
713          * information */
714
715         out_cmd->hdr.flags = 0;
716         out_cmd->hdr.sequence = cpu_to_le16(QUEUE_TO_SEQ(IWL_CMD_QUEUE_NUM) |
717                         INDEX_TO_SEQ(q->write_ptr));
718         if (out_cmd->meta.flags & CMD_SIZE_HUGE)
719                 out_cmd->hdr.sequence |= cpu_to_le16(SEQ_HUGE_FRAME);
720
721         phys_addr = txq->dma_addr_cmd + sizeof(txq->cmd[0]) * idx +
722                         offsetof(struct iwl4965_cmd, hdr);
723         iwl4965_hw_txq_attach_buf_to_tfd(priv, tfd, phys_addr, fix_size);
724
725         IWL_DEBUG_HC("Sending command %s (#%x), seq: 0x%04X, "
726                      "%d bytes at %d[%d]:%d\n",
727                      get_cmd_string(out_cmd->hdr.cmd),
728                      out_cmd->hdr.cmd, le16_to_cpu(out_cmd->hdr.sequence),
729                      fix_size, q->write_ptr, idx, IWL_CMD_QUEUE_NUM);
730
731         txq->need_update = 1;
732
733         /* Set up entry in queue's byte count circular buffer */
734         ret = iwl4965_tx_queue_update_wr_ptr(priv, txq, 0);
735
736         /* Increment and update queue's write index */
737         q->write_ptr = iwl4965_queue_inc_wrap(q->write_ptr, q->n_bd);
738         iwl4965_tx_queue_update_write_ptr(priv, txq);
739
740         spin_unlock_irqrestore(&priv->hcmd_lock, flags);
741         return ret ? ret : idx;
742 }
743
744 static int iwl4965_send_cmd_async(struct iwl4965_priv *priv, struct iwl4965_host_cmd *cmd)
745 {
746         int ret;
747
748         BUG_ON(!(cmd->meta.flags & CMD_ASYNC));
749
750         /* An asynchronous command can not expect an SKB to be set. */
751         BUG_ON(cmd->meta.flags & CMD_WANT_SKB);
752
753         /* An asynchronous command MUST have a callback. */
754         BUG_ON(!cmd->meta.u.callback);
755
756         if (test_bit(STATUS_EXIT_PENDING, &priv->status))
757                 return -EBUSY;
758
759         ret = iwl4965_enqueue_hcmd(priv, cmd);
760         if (ret < 0) {
761                 IWL_ERROR("Error sending %s: iwl4965_enqueue_hcmd failed: %d\n",
762                           get_cmd_string(cmd->id), ret);
763                 return ret;
764         }
765         return 0;
766 }
767
768 static int iwl4965_send_cmd_sync(struct iwl4965_priv *priv, struct iwl4965_host_cmd *cmd)
769 {
770         int cmd_idx;
771         int ret;
772         static atomic_t entry = ATOMIC_INIT(0); /* reentrance protection */
773
774         BUG_ON(cmd->meta.flags & CMD_ASYNC);
775
776          /* A synchronous command can not have a callback set. */
777         BUG_ON(cmd->meta.u.callback != NULL);
778
779         if (atomic_xchg(&entry, 1)) {
780                 IWL_ERROR("Error sending %s: Already sending a host command\n",
781                           get_cmd_string(cmd->id));
782                 return -EBUSY;
783         }
784
785         set_bit(STATUS_HCMD_ACTIVE, &priv->status);
786
787         if (cmd->meta.flags & CMD_WANT_SKB)
788                 cmd->meta.source = &cmd->meta;
789
790         cmd_idx = iwl4965_enqueue_hcmd(priv, cmd);
791         if (cmd_idx < 0) {
792                 ret = cmd_idx;
793                 IWL_ERROR("Error sending %s: iwl4965_enqueue_hcmd failed: %d\n",
794                           get_cmd_string(cmd->id), ret);
795                 goto out;
796         }
797
798         ret = wait_event_interruptible_timeout(priv->wait_command_queue,
799                         !test_bit(STATUS_HCMD_ACTIVE, &priv->status),
800                         HOST_COMPLETE_TIMEOUT);
801         if (!ret) {
802                 if (test_bit(STATUS_HCMD_ACTIVE, &priv->status)) {
803                         IWL_ERROR("Error sending %s: time out after %dms.\n",
804                                   get_cmd_string(cmd->id),
805                                   jiffies_to_msecs(HOST_COMPLETE_TIMEOUT));
806
807                         clear_bit(STATUS_HCMD_ACTIVE, &priv->status);
808                         ret = -ETIMEDOUT;
809                         goto cancel;
810                 }
811         }
812
813         if (test_bit(STATUS_RF_KILL_HW, &priv->status)) {
814                 IWL_DEBUG_INFO("Command %s aborted: RF KILL Switch\n",
815                                get_cmd_string(cmd->id));
816                 ret = -ECANCELED;
817                 goto fail;
818         }
819         if (test_bit(STATUS_FW_ERROR, &priv->status)) {
820                 IWL_DEBUG_INFO("Command %s failed: FW Error\n",
821                                get_cmd_string(cmd->id));
822                 ret = -EIO;
823                 goto fail;
824         }
825         if ((cmd->meta.flags & CMD_WANT_SKB) && !cmd->meta.u.skb) {
826                 IWL_ERROR("Error: Response NULL in '%s'\n",
827                           get_cmd_string(cmd->id));
828                 ret = -EIO;
829                 goto out;
830         }
831
832         ret = 0;
833         goto out;
834
835 cancel:
836         if (cmd->meta.flags & CMD_WANT_SKB) {
837                 struct iwl4965_cmd *qcmd;
838
839                 /* Cancel the CMD_WANT_SKB flag for the cmd in the
840                  * TX cmd queue. Otherwise in case the cmd comes
841                  * in later, it will possibly set an invalid
842                  * address (cmd->meta.source). */
843                 qcmd = &priv->txq[IWL_CMD_QUEUE_NUM].cmd[cmd_idx];
844                 qcmd->meta.flags &= ~CMD_WANT_SKB;
845         }
846 fail:
847         if (cmd->meta.u.skb) {
848                 dev_kfree_skb_any(cmd->meta.u.skb);
849                 cmd->meta.u.skb = NULL;
850         }
851 out:
852         atomic_set(&entry, 0);
853         return ret;
854 }
855
856 int iwl4965_send_cmd(struct iwl4965_priv *priv, struct iwl4965_host_cmd *cmd)
857 {
858         if (cmd->meta.flags & CMD_ASYNC)
859                 return iwl4965_send_cmd_async(priv, cmd);
860
861         return iwl4965_send_cmd_sync(priv, cmd);
862 }
863
864 int iwl4965_send_cmd_pdu(struct iwl4965_priv *priv, u8 id, u16 len, const void *data)
865 {
866         struct iwl4965_host_cmd cmd = {
867                 .id = id,
868                 .len = len,
869                 .data = data,
870         };
871
872         return iwl4965_send_cmd_sync(priv, &cmd);
873 }
874
875 static int __must_check iwl4965_send_cmd_u32(struct iwl4965_priv *priv, u8 id, u32 val)
876 {
877         struct iwl4965_host_cmd cmd = {
878                 .id = id,
879                 .len = sizeof(val),
880                 .data = &val,
881         };
882
883         return iwl4965_send_cmd_sync(priv, &cmd);
884 }
885
886 int iwl4965_send_statistics_request(struct iwl4965_priv *priv)
887 {
888         return iwl4965_send_cmd_u32(priv, REPLY_STATISTICS_CMD, 0);
889 }
890
891 /**
892  * iwl4965_rxon_add_station - add station into station table.
893  *
894  * there is only one AP station with id= IWL_AP_ID
895  * NOTE: mutex must be held before calling this fnction
896  */
897 static int iwl4965_rxon_add_station(struct iwl4965_priv *priv,
898                                 const u8 *addr, int is_ap)
899 {
900         u8 sta_id;
901
902         /* Add station to device's station table */
903         sta_id = iwl4965_add_station_flags(priv, addr, is_ap, 0);
904
905         /* Set up default rate scaling table in device's station table */
906         iwl4965_add_station(priv, addr, is_ap);
907
908         return sta_id;
909 }
910
911 /**
912  * iwl4965_set_rxon_channel - Set the phymode and channel values in staging RXON
913  * @phymode: MODE_IEEE80211A sets to 5.2GHz; all else set to 2.4GHz
914  * @channel: Any channel valid for the requested phymode
915
916  * In addition to setting the staging RXON, priv->phymode is also set.
917  *
918  * NOTE:  Does not commit to the hardware; it sets appropriate bit fields
919  * in the staging RXON flag structure based on the phymode
920  */
921 static int iwl4965_set_rxon_channel(struct iwl4965_priv *priv, u8 phymode,
922                                  u16 channel)
923 {
924         if (!iwl4965_get_channel_info(priv, phymode, channel)) {
925                 IWL_DEBUG_INFO("Could not set channel to %d [%d]\n",
926                                channel, phymode);
927                 return -EINVAL;
928         }
929
930         if ((le16_to_cpu(priv->staging_rxon.channel) == channel) &&
931             (priv->phymode == phymode))
932                 return 0;
933
934         priv->staging_rxon.channel = cpu_to_le16(channel);
935         if (phymode == MODE_IEEE80211A)
936                 priv->staging_rxon.flags &= ~RXON_FLG_BAND_24G_MSK;
937         else
938                 priv->staging_rxon.flags |= RXON_FLG_BAND_24G_MSK;
939
940         priv->phymode = phymode;
941
942         IWL_DEBUG_INFO("Staging channel set to %d [%d]\n", channel, phymode);
943
944         return 0;
945 }
946
947 /**
948  * iwl4965_check_rxon_cmd - validate RXON structure is valid
949  *
950  * NOTE:  This is really only useful during development and can eventually
951  * be #ifdef'd out once the driver is stable and folks aren't actively
952  * making changes
953  */
954 static int iwl4965_check_rxon_cmd(struct iwl4965_rxon_cmd *rxon)
955 {
956         int error = 0;
957         int counter = 1;
958
959         if (rxon->flags & RXON_FLG_BAND_24G_MSK) {
960                 error |= le32_to_cpu(rxon->flags &
961                                 (RXON_FLG_TGJ_NARROW_BAND_MSK |
962                                  RXON_FLG_RADAR_DETECT_MSK));
963                 if (error)
964                         IWL_WARNING("check 24G fields %d | %d\n",
965                                     counter++, error);
966         } else {
967                 error |= (rxon->flags & RXON_FLG_SHORT_SLOT_MSK) ?
968                                 0 : le32_to_cpu(RXON_FLG_SHORT_SLOT_MSK);
969                 if (error)
970                         IWL_WARNING("check 52 fields %d | %d\n",
971                                     counter++, error);
972                 error |= le32_to_cpu(rxon->flags & RXON_FLG_CCK_MSK);
973                 if (error)
974                         IWL_WARNING("check 52 CCK %d | %d\n",
975                                     counter++, error);
976         }
977         error |= (rxon->node_addr[0] | rxon->bssid_addr[0]) & 0x1;
978         if (error)
979                 IWL_WARNING("check mac addr %d | %d\n", counter++, error);
980
981         /* make sure basic rates 6Mbps and 1Mbps are supported */
982         error |= (((rxon->ofdm_basic_rates & IWL_RATE_6M_MASK) == 0) &&
983                   ((rxon->cck_basic_rates & IWL_RATE_1M_MASK) == 0));
984         if (error)
985                 IWL_WARNING("check basic rate %d | %d\n", counter++, error);
986
987         error |= (le16_to_cpu(rxon->assoc_id) > 2007);
988         if (error)
989                 IWL_WARNING("check assoc id %d | %d\n", counter++, error);
990
991         error |= ((rxon->flags & (RXON_FLG_CCK_MSK | RXON_FLG_SHORT_SLOT_MSK))
992                         == (RXON_FLG_CCK_MSK | RXON_FLG_SHORT_SLOT_MSK));
993         if (error)
994                 IWL_WARNING("check CCK and short slot %d | %d\n",
995                             counter++, error);
996
997         error |= ((rxon->flags & (RXON_FLG_CCK_MSK | RXON_FLG_AUTO_DETECT_MSK))
998                         == (RXON_FLG_CCK_MSK | RXON_FLG_AUTO_DETECT_MSK));
999         if (error)
1000                 IWL_WARNING("check CCK & auto detect %d | %d\n",
1001                             counter++, error);
1002
1003         error |= ((rxon->flags & (RXON_FLG_AUTO_DETECT_MSK |
1004                         RXON_FLG_TGG_PROTECT_MSK)) == RXON_FLG_TGG_PROTECT_MSK);
1005         if (error)
1006                 IWL_WARNING("check TGG and auto detect %d | %d\n",
1007                             counter++, error);
1008
1009         if (error)
1010                 IWL_WARNING("Tuning to channel %d\n",
1011                             le16_to_cpu(rxon->channel));
1012
1013         if (error) {
1014                 IWL_ERROR("Not a valid iwl4965_rxon_assoc_cmd field values\n");
1015                 return -1;
1016         }
1017         return 0;
1018 }
1019
1020 /**
1021  * iwl4965_full_rxon_required - check if full RXON (vs RXON_ASSOC) cmd is needed
1022  * @priv: staging_rxon is compared to active_rxon
1023  *
1024  * If the RXON structure is changing enough to require a new tune,
1025  * or is clearing the RXON_FILTER_ASSOC_MSK, then return 1 to indicate that
1026  * a new tune (full RXON command, rather than RXON_ASSOC cmd) is required.
1027  */
1028 static int iwl4965_full_rxon_required(struct iwl4965_priv *priv)
1029 {
1030
1031         /* These items are only settable from the full RXON command */
1032         if (!(priv->active_rxon.filter_flags & RXON_FILTER_ASSOC_MSK) ||
1033             compare_ether_addr(priv->staging_rxon.bssid_addr,
1034                                priv->active_rxon.bssid_addr) ||
1035             compare_ether_addr(priv->staging_rxon.node_addr,
1036                                priv->active_rxon.node_addr) ||
1037             compare_ether_addr(priv->staging_rxon.wlap_bssid_addr,
1038                                priv->active_rxon.wlap_bssid_addr) ||
1039             (priv->staging_rxon.dev_type != priv->active_rxon.dev_type) ||
1040             (priv->staging_rxon.channel != priv->active_rxon.channel) ||
1041             (priv->staging_rxon.air_propagation !=
1042              priv->active_rxon.air_propagation) ||
1043             (priv->staging_rxon.ofdm_ht_single_stream_basic_rates !=
1044              priv->active_rxon.ofdm_ht_single_stream_basic_rates) ||
1045             (priv->staging_rxon.ofdm_ht_dual_stream_basic_rates !=
1046              priv->active_rxon.ofdm_ht_dual_stream_basic_rates) ||
1047             (priv->staging_rxon.rx_chain != priv->active_rxon.rx_chain) ||
1048             (priv->staging_rxon.assoc_id != priv->active_rxon.assoc_id))
1049                 return 1;
1050
1051         /* flags, filter_flags, ofdm_basic_rates, and cck_basic_rates can
1052          * be updated with the RXON_ASSOC command -- however only some
1053          * flag transitions are allowed using RXON_ASSOC */
1054
1055         /* Check if we are not switching bands */
1056         if ((priv->staging_rxon.flags & RXON_FLG_BAND_24G_MSK) !=
1057             (priv->active_rxon.flags & RXON_FLG_BAND_24G_MSK))
1058                 return 1;
1059
1060         /* Check if we are switching association toggle */
1061         if ((priv->staging_rxon.filter_flags & RXON_FILTER_ASSOC_MSK) !=
1062                 (priv->active_rxon.filter_flags & RXON_FILTER_ASSOC_MSK))
1063                 return 1;
1064
1065         return 0;
1066 }
1067
1068 static int iwl4965_send_rxon_assoc(struct iwl4965_priv *priv)
1069 {
1070         int rc = 0;
1071         struct iwl4965_rx_packet *res = NULL;
1072         struct iwl4965_rxon_assoc_cmd rxon_assoc;
1073         struct iwl4965_host_cmd cmd = {
1074                 .id = REPLY_RXON_ASSOC,
1075                 .len = sizeof(rxon_assoc),
1076                 .meta.flags = CMD_WANT_SKB,
1077                 .data = &rxon_assoc,
1078         };
1079         const struct iwl4965_rxon_cmd *rxon1 = &priv->staging_rxon;
1080         const struct iwl4965_rxon_cmd *rxon2 = &priv->active_rxon;
1081
1082         if ((rxon1->flags == rxon2->flags) &&
1083             (rxon1->filter_flags == rxon2->filter_flags) &&
1084             (rxon1->cck_basic_rates == rxon2->cck_basic_rates) &&
1085             (rxon1->ofdm_ht_single_stream_basic_rates ==
1086              rxon2->ofdm_ht_single_stream_basic_rates) &&
1087             (rxon1->ofdm_ht_dual_stream_basic_rates ==
1088              rxon2->ofdm_ht_dual_stream_basic_rates) &&
1089             (rxon1->rx_chain == rxon2->rx_chain) &&
1090             (rxon1->ofdm_basic_rates == rxon2->ofdm_basic_rates)) {
1091                 IWL_DEBUG_INFO("Using current RXON_ASSOC.  Not resending.\n");
1092                 return 0;
1093         }
1094
1095         rxon_assoc.flags = priv->staging_rxon.flags;
1096         rxon_assoc.filter_flags = priv->staging_rxon.filter_flags;
1097         rxon_assoc.ofdm_basic_rates = priv->staging_rxon.ofdm_basic_rates;
1098         rxon_assoc.cck_basic_rates = priv->staging_rxon.cck_basic_rates;
1099         rxon_assoc.reserved = 0;
1100         rxon_assoc.ofdm_ht_single_stream_basic_rates =
1101             priv->staging_rxon.ofdm_ht_single_stream_basic_rates;
1102         rxon_assoc.ofdm_ht_dual_stream_basic_rates =
1103             priv->staging_rxon.ofdm_ht_dual_stream_basic_rates;
1104         rxon_assoc.rx_chain_select_flags = priv->staging_rxon.rx_chain;
1105
1106         rc = iwl4965_send_cmd_sync(priv, &cmd);
1107         if (rc)
1108                 return rc;
1109
1110         res = (struct iwl4965_rx_packet *)cmd.meta.u.skb->data;
1111         if (res->hdr.flags & IWL_CMD_FAILED_MSK) {
1112                 IWL_ERROR("Bad return from REPLY_RXON_ASSOC command\n");
1113                 rc = -EIO;
1114         }
1115
1116         priv->alloc_rxb_skb--;
1117         dev_kfree_skb_any(cmd.meta.u.skb);
1118
1119         return rc;
1120 }
1121
1122 /**
1123  * iwl4965_commit_rxon - commit staging_rxon to hardware
1124  *
1125  * The RXON command in staging_rxon is committed to the hardware and
1126  * the active_rxon structure is updated with the new data.  This
1127  * function correctly transitions out of the RXON_ASSOC_MSK state if
1128  * a HW tune is required based on the RXON structure changes.
1129  */
1130 static int iwl4965_commit_rxon(struct iwl4965_priv *priv)
1131 {
1132         /* cast away the const for active_rxon in this function */
1133         struct iwl4965_rxon_cmd *active_rxon = (void *)&priv->active_rxon;
1134         DECLARE_MAC_BUF(mac);
1135         int rc = 0;
1136
1137         if (!iwl4965_is_alive(priv))
1138                 return -1;
1139
1140         /* always get timestamp with Rx frame */
1141         priv->staging_rxon.flags |= RXON_FLG_TSF2HOST_MSK;
1142
1143         rc = iwl4965_check_rxon_cmd(&priv->staging_rxon);
1144         if (rc) {
1145                 IWL_ERROR("Invalid RXON configuration.  Not committing.\n");
1146                 return -EINVAL;
1147         }
1148
1149         /* If we don't need to send a full RXON, we can use
1150          * iwl4965_rxon_assoc_cmd which is used to reconfigure filter
1151          * and other flags for the current radio configuration. */
1152         if (!iwl4965_full_rxon_required(priv)) {
1153                 rc = iwl4965_send_rxon_assoc(priv);
1154                 if (rc) {
1155                         IWL_ERROR("Error setting RXON_ASSOC "
1156                                   "configuration (%d).\n", rc);
1157                         return rc;
1158                 }
1159
1160                 memcpy(active_rxon, &priv->staging_rxon, sizeof(*active_rxon));
1161
1162                 return 0;
1163         }
1164
1165         /* station table will be cleared */
1166         priv->assoc_station_added = 0;
1167
1168 #ifdef CONFIG_IWL4965_SENSITIVITY
1169         priv->sensitivity_data.state = IWL_SENS_CALIB_NEED_REINIT;
1170         if (!priv->error_recovering)
1171                 priv->start_calib = 0;
1172
1173         iwl4965_init_sensitivity(priv, CMD_ASYNC, 1);
1174 #endif /* CONFIG_IWL4965_SENSITIVITY */
1175
1176         /* If we are currently associated and the new config requires
1177          * an RXON_ASSOC and the new config wants the associated mask enabled,
1178          * we must clear the associated from the active configuration
1179          * before we apply the new config */
1180         if (iwl4965_is_associated(priv) &&
1181             (priv->staging_rxon.filter_flags & RXON_FILTER_ASSOC_MSK)) {
1182                 IWL_DEBUG_INFO("Toggling associated bit on current RXON\n");
1183                 active_rxon->filter_flags &= ~RXON_FILTER_ASSOC_MSK;
1184
1185                 rc = iwl4965_send_cmd_pdu(priv, REPLY_RXON,
1186                                       sizeof(struct iwl4965_rxon_cmd),
1187                                       &priv->active_rxon);
1188
1189                 /* If the mask clearing failed then we set
1190                  * active_rxon back to what it was previously */
1191                 if (rc) {
1192                         active_rxon->filter_flags |= RXON_FILTER_ASSOC_MSK;
1193                         IWL_ERROR("Error clearing ASSOC_MSK on current "
1194                                   "configuration (%d).\n", rc);
1195                         return rc;
1196                 }
1197         }
1198
1199         IWL_DEBUG_INFO("Sending RXON\n"
1200                        "* with%s RXON_FILTER_ASSOC_MSK\n"
1201                        "* channel = %d\n"
1202                        "* bssid = %s\n",
1203                        ((priv->staging_rxon.filter_flags &
1204                          RXON_FILTER_ASSOC_MSK) ? "" : "out"),
1205                        le16_to_cpu(priv->staging_rxon.channel),
1206                        print_mac(mac, priv->staging_rxon.bssid_addr));
1207
1208         /* Apply the new configuration */
1209         rc = iwl4965_send_cmd_pdu(priv, REPLY_RXON,
1210                               sizeof(struct iwl4965_rxon_cmd), &priv->staging_rxon);
1211         if (rc) {
1212                 IWL_ERROR("Error setting new configuration (%d).\n", rc);
1213                 return rc;
1214         }
1215
1216         iwl4965_clear_stations_table(priv);
1217
1218 #ifdef CONFIG_IWL4965_SENSITIVITY
1219         if (!priv->error_recovering)
1220                 priv->start_calib = 0;
1221
1222         priv->sensitivity_data.state = IWL_SENS_CALIB_NEED_REINIT;
1223         iwl4965_init_sensitivity(priv, CMD_ASYNC, 1);
1224 #endif /* CONFIG_IWL4965_SENSITIVITY */
1225
1226         memcpy(active_rxon, &priv->staging_rxon, sizeof(*active_rxon));
1227
1228         /* If we issue a new RXON command which required a tune then we must
1229          * send a new TXPOWER command or we won't be able to Tx any frames */
1230         rc = iwl4965_hw_reg_send_txpower(priv);
1231         if (rc) {
1232                 IWL_ERROR("Error setting Tx power (%d).\n", rc);
1233                 return rc;
1234         }
1235
1236         /* Add the broadcast address so we can send broadcast frames */
1237         if (iwl4965_rxon_add_station(priv, iwl4965_broadcast_addr, 0) ==
1238             IWL_INVALID_STATION) {
1239                 IWL_ERROR("Error adding BROADCAST address for transmit.\n");
1240                 return -EIO;
1241         }
1242
1243         /* If we have set the ASSOC_MSK and we are in BSS mode then
1244          * add the IWL_AP_ID to the station rate table */
1245         if (iwl4965_is_associated(priv) &&
1246             (priv->iw_mode == IEEE80211_IF_TYPE_STA)) {
1247                 if (iwl4965_rxon_add_station(priv, priv->active_rxon.bssid_addr, 1)
1248                     == IWL_INVALID_STATION) {
1249                         IWL_ERROR("Error adding AP address for transmit.\n");
1250                         return -EIO;
1251                 }
1252                 priv->assoc_station_added = 1;
1253         }
1254
1255         return 0;
1256 }
1257
1258 static int iwl4965_send_bt_config(struct iwl4965_priv *priv)
1259 {
1260         struct iwl4965_bt_cmd bt_cmd = {
1261                 .flags = 3,
1262                 .lead_time = 0xAA,
1263                 .max_kill = 1,
1264                 .kill_ack_mask = 0,
1265                 .kill_cts_mask = 0,
1266         };
1267
1268         return iwl4965_send_cmd_pdu(priv, REPLY_BT_CONFIG,
1269                                 sizeof(struct iwl4965_bt_cmd), &bt_cmd);
1270 }
1271
1272 static int iwl4965_send_scan_abort(struct iwl4965_priv *priv)
1273 {
1274         int rc = 0;
1275         struct iwl4965_rx_packet *res;
1276         struct iwl4965_host_cmd cmd = {
1277                 .id = REPLY_SCAN_ABORT_CMD,
1278                 .meta.flags = CMD_WANT_SKB,
1279         };
1280
1281         /* If there isn't a scan actively going on in the hardware
1282          * then we are in between scan bands and not actually
1283          * actively scanning, so don't send the abort command */
1284         if (!test_bit(STATUS_SCAN_HW, &priv->status)) {
1285                 clear_bit(STATUS_SCAN_ABORTING, &priv->status);
1286                 return 0;
1287         }
1288
1289         rc = iwl4965_send_cmd_sync(priv, &cmd);
1290         if (rc) {
1291                 clear_bit(STATUS_SCAN_ABORTING, &priv->status);
1292                 return rc;
1293         }
1294
1295         res = (struct iwl4965_rx_packet *)cmd.meta.u.skb->data;
1296         if (res->u.status != CAN_ABORT_STATUS) {
1297                 /* The scan abort will return 1 for success or
1298                  * 2 for "failure".  A failure condition can be
1299                  * due to simply not being in an active scan which
1300                  * can occur if we send the scan abort before we
1301                  * the microcode has notified us that a scan is
1302                  * completed. */
1303                 IWL_DEBUG_INFO("SCAN_ABORT returned %d.\n", res->u.status);
1304                 clear_bit(STATUS_SCAN_ABORTING, &priv->status);
1305                 clear_bit(STATUS_SCAN_HW, &priv->status);
1306         }
1307
1308         dev_kfree_skb_any(cmd.meta.u.skb);
1309
1310         return rc;
1311 }
1312
1313 static int iwl4965_card_state_sync_callback(struct iwl4965_priv *priv,
1314                                         struct iwl4965_cmd *cmd,
1315                                         struct sk_buff *skb)
1316 {
1317         return 1;
1318 }
1319
1320 /*
1321  * CARD_STATE_CMD
1322  *
1323  * Use: Sets the device's internal card state to enable, disable, or halt
1324  *
1325  * When in the 'enable' state the card operates as normal.
1326  * When in the 'disable' state, the card enters into a low power mode.
1327  * When in the 'halt' state, the card is shut down and must be fully
1328  * restarted to come back on.
1329  */
1330 static int iwl4965_send_card_state(struct iwl4965_priv *priv, u32 flags, u8 meta_flag)
1331 {
1332         struct iwl4965_host_cmd cmd = {
1333                 .id = REPLY_CARD_STATE_CMD,
1334                 .len = sizeof(u32),
1335                 .data = &flags,
1336                 .meta.flags = meta_flag,
1337         };
1338
1339         if (meta_flag & CMD_ASYNC)
1340                 cmd.meta.u.callback = iwl4965_card_state_sync_callback;
1341
1342         return iwl4965_send_cmd(priv, &cmd);
1343 }
1344
1345 static int iwl4965_add_sta_sync_callback(struct iwl4965_priv *priv,
1346                                      struct iwl4965_cmd *cmd, struct sk_buff *skb)
1347 {
1348         struct iwl4965_rx_packet *res = NULL;
1349
1350         if (!skb) {
1351                 IWL_ERROR("Error: Response NULL in REPLY_ADD_STA.\n");
1352                 return 1;
1353         }
1354
1355         res = (struct iwl4965_rx_packet *)skb->data;
1356         if (res->hdr.flags & IWL_CMD_FAILED_MSK) {
1357                 IWL_ERROR("Bad return from REPLY_ADD_STA (0x%08X)\n",
1358                           res->hdr.flags);
1359                 return 1;
1360         }
1361
1362         switch (res->u.add_sta.status) {
1363         case ADD_STA_SUCCESS_MSK:
1364                 break;
1365         default:
1366                 break;
1367         }
1368
1369         /* We didn't cache the SKB; let the caller free it */
1370         return 1;
1371 }
1372
1373 int iwl4965_send_add_station(struct iwl4965_priv *priv,
1374                          struct iwl4965_addsta_cmd *sta, u8 flags)
1375 {
1376         struct iwl4965_rx_packet *res = NULL;
1377         int rc = 0;
1378         struct iwl4965_host_cmd cmd = {
1379                 .id = REPLY_ADD_STA,
1380                 .len = sizeof(struct iwl4965_addsta_cmd),
1381                 .meta.flags = flags,
1382                 .data = sta,
1383         };
1384
1385         if (flags & CMD_ASYNC)
1386                 cmd.meta.u.callback = iwl4965_add_sta_sync_callback;
1387         else
1388                 cmd.meta.flags |= CMD_WANT_SKB;
1389
1390         rc = iwl4965_send_cmd(priv, &cmd);
1391
1392         if (rc || (flags & CMD_ASYNC))
1393                 return rc;
1394
1395         res = (struct iwl4965_rx_packet *)cmd.meta.u.skb->data;
1396         if (res->hdr.flags & IWL_CMD_FAILED_MSK) {
1397                 IWL_ERROR("Bad return from REPLY_ADD_STA (0x%08X)\n",
1398                           res->hdr.flags);
1399                 rc = -EIO;
1400         }
1401
1402         if (rc == 0) {
1403                 switch (res->u.add_sta.status) {
1404                 case ADD_STA_SUCCESS_MSK:
1405                         IWL_DEBUG_INFO("REPLY_ADD_STA PASSED\n");
1406                         break;
1407                 default:
1408                         rc = -EIO;
1409                         IWL_WARNING("REPLY_ADD_STA failed\n");
1410                         break;
1411                 }
1412         }
1413
1414         priv->alloc_rxb_skb--;
1415         dev_kfree_skb_any(cmd.meta.u.skb);
1416
1417         return rc;
1418 }
1419
1420 static int iwl4965_update_sta_key_info(struct iwl4965_priv *priv,
1421                                    struct ieee80211_key_conf *keyconf,
1422                                    u8 sta_id)
1423 {
1424         unsigned long flags;
1425         __le16 key_flags = 0;
1426
1427         switch (keyconf->alg) {
1428         case ALG_CCMP:
1429                 key_flags |= STA_KEY_FLG_CCMP;
1430                 key_flags |= cpu_to_le16(
1431                                 keyconf->keyidx << STA_KEY_FLG_KEYID_POS);
1432                 key_flags &= ~STA_KEY_FLG_INVALID;
1433                 break;
1434         case ALG_TKIP:
1435         case ALG_WEP:
1436         default:
1437                 return -EINVAL;
1438         }
1439         spin_lock_irqsave(&priv->sta_lock, flags);
1440         priv->stations[sta_id].keyinfo.alg = keyconf->alg;
1441         priv->stations[sta_id].keyinfo.keylen = keyconf->keylen;
1442         memcpy(priv->stations[sta_id].keyinfo.key, keyconf->key,
1443                keyconf->keylen);
1444
1445         memcpy(priv->stations[sta_id].sta.key.key, keyconf->key,
1446                keyconf->keylen);
1447         priv->stations[sta_id].sta.key.key_flags = key_flags;
1448         priv->stations[sta_id].sta.sta.modify_mask = STA_MODIFY_KEY_MASK;
1449         priv->stations[sta_id].sta.mode = STA_CONTROL_MODIFY_MSK;
1450
1451         spin_unlock_irqrestore(&priv->sta_lock, flags);
1452
1453         IWL_DEBUG_INFO("hwcrypto: modify ucode station key info\n");
1454         iwl4965_send_add_station(priv, &priv->stations[sta_id].sta, 0);
1455         return 0;
1456 }
1457
1458 static int iwl4965_clear_sta_key_info(struct iwl4965_priv *priv, u8 sta_id)
1459 {
1460         unsigned long flags;
1461
1462         spin_lock_irqsave(&priv->sta_lock, flags);
1463         memset(&priv->stations[sta_id].keyinfo, 0, sizeof(struct iwl4965_hw_key));
1464         memset(&priv->stations[sta_id].sta.key, 0, sizeof(struct iwl4965_keyinfo));
1465         priv->stations[sta_id].sta.key.key_flags = STA_KEY_FLG_NO_ENC;
1466         priv->stations[sta_id].sta.sta.modify_mask = STA_MODIFY_KEY_MASK;
1467         priv->stations[sta_id].sta.mode = STA_CONTROL_MODIFY_MSK;
1468         spin_unlock_irqrestore(&priv->sta_lock, flags);
1469
1470         IWL_DEBUG_INFO("hwcrypto: clear ucode station key info\n");
1471         iwl4965_send_add_station(priv, &priv->stations[sta_id].sta, 0);
1472         return 0;
1473 }
1474
1475 static void iwl4965_clear_free_frames(struct iwl4965_priv *priv)
1476 {
1477         struct list_head *element;
1478
1479         IWL_DEBUG_INFO("%d frames on pre-allocated heap on clear.\n",
1480                        priv->frames_count);
1481
1482         while (!list_empty(&priv->free_frames)) {
1483                 element = priv->free_frames.next;
1484                 list_del(element);
1485                 kfree(list_entry(element, struct iwl4965_frame, list));
1486                 priv->frames_count--;
1487         }
1488
1489         if (priv->frames_count) {
1490                 IWL_WARNING("%d frames still in use.  Did we lose one?\n",
1491                             priv->frames_count);
1492                 priv->frames_count = 0;
1493         }
1494 }
1495
1496 static struct iwl4965_frame *iwl4965_get_free_frame(struct iwl4965_priv *priv)
1497 {
1498         struct iwl4965_frame *frame;
1499         struct list_head *element;
1500         if (list_empty(&priv->free_frames)) {
1501                 frame = kzalloc(sizeof(*frame), GFP_KERNEL);
1502                 if (!frame) {
1503                         IWL_ERROR("Could not allocate frame!\n");
1504                         return NULL;
1505                 }
1506
1507                 priv->frames_count++;
1508                 return frame;
1509         }
1510
1511         element = priv->free_frames.next;
1512         list_del(element);
1513         return list_entry(element, struct iwl4965_frame, list);
1514 }
1515
1516 static void iwl4965_free_frame(struct iwl4965_priv *priv, struct iwl4965_frame *frame)
1517 {
1518         memset(frame, 0, sizeof(*frame));
1519         list_add(&frame->list, &priv->free_frames);
1520 }
1521
1522 unsigned int iwl4965_fill_beacon_frame(struct iwl4965_priv *priv,
1523                                 struct ieee80211_hdr *hdr,
1524                                 const u8 *dest, int left)
1525 {
1526
1527         if (!iwl4965_is_associated(priv) || !priv->ibss_beacon ||
1528             ((priv->iw_mode != IEEE80211_IF_TYPE_IBSS) &&
1529              (priv->iw_mode != IEEE80211_IF_TYPE_AP)))
1530                 return 0;
1531
1532         if (priv->ibss_beacon->len > left)
1533                 return 0;
1534
1535         memcpy(hdr, priv->ibss_beacon->data, priv->ibss_beacon->len);
1536
1537         return priv->ibss_beacon->len;
1538 }
1539
1540 int iwl4965_rate_index_from_plcp(int plcp)
1541 {
1542         int i = 0;
1543
1544         /* 4965 HT rate format */
1545         if (plcp & RATE_MCS_HT_MSK) {
1546                 i = (plcp & 0xff);
1547
1548                 if (i >= IWL_RATE_MIMO_6M_PLCP)
1549                         i = i - IWL_RATE_MIMO_6M_PLCP;
1550
1551                 i += IWL_FIRST_OFDM_RATE;
1552                 /* skip 9M not supported in ht*/
1553                 if (i >= IWL_RATE_9M_INDEX)
1554                         i += 1;
1555                 if ((i >= IWL_FIRST_OFDM_RATE) &&
1556                     (i <= IWL_LAST_OFDM_RATE))
1557                         return i;
1558
1559         /* 4965 legacy rate format, search for match in table */
1560         } else {
1561                 for (i = 0; i < ARRAY_SIZE(iwl4965_rates); i++)
1562                         if (iwl4965_rates[i].plcp == (plcp &0xFF))
1563                                 return i;
1564         }
1565         return -1;
1566 }
1567
1568 static u8 iwl4965_rate_get_lowest_plcp(int rate_mask)
1569 {
1570         u8 i;
1571
1572         for (i = IWL_RATE_1M_INDEX; i != IWL_RATE_INVALID;
1573              i = iwl4965_rates[i].next_ieee) {
1574                 if (rate_mask & (1 << i))
1575                         return iwl4965_rates[i].plcp;
1576         }
1577
1578         return IWL_RATE_INVALID;
1579 }
1580
1581 static int iwl4965_send_beacon_cmd(struct iwl4965_priv *priv)
1582 {
1583         struct iwl4965_frame *frame;
1584         unsigned int frame_size;
1585         int rc;
1586         u8 rate;
1587
1588         frame = iwl4965_get_free_frame(priv);
1589
1590         if (!frame) {
1591                 IWL_ERROR("Could not obtain free frame buffer for beacon "
1592                           "command.\n");
1593                 return -ENOMEM;
1594         }
1595
1596         if (!(priv->staging_rxon.flags & RXON_FLG_BAND_24G_MSK)) {
1597                 rate = iwl4965_rate_get_lowest_plcp(priv->active_rate_basic &
1598                                                 0xFF0);
1599                 if (rate == IWL_INVALID_RATE)
1600                         rate = IWL_RATE_6M_PLCP;
1601         } else {
1602                 rate = iwl4965_rate_get_lowest_plcp(priv->active_rate_basic & 0xF);
1603                 if (rate == IWL_INVALID_RATE)
1604                         rate = IWL_RATE_1M_PLCP;
1605         }
1606
1607         frame_size = iwl4965_hw_get_beacon_cmd(priv, frame, rate);
1608
1609         rc = iwl4965_send_cmd_pdu(priv, REPLY_TX_BEACON, frame_size,
1610                               &frame->u.cmd[0]);
1611
1612         iwl4965_free_frame(priv, frame);
1613
1614         return rc;
1615 }
1616
1617 /******************************************************************************
1618  *
1619  * EEPROM related functions
1620  *
1621  ******************************************************************************/
1622
1623 static void get_eeprom_mac(struct iwl4965_priv *priv, u8 *mac)
1624 {
1625         memcpy(mac, priv->eeprom.mac_address, 6);
1626 }
1627
1628 /**
1629  * iwl4965_eeprom_init - read EEPROM contents
1630  *
1631  * Load the EEPROM contents from adapter into priv->eeprom
1632  *
1633  * NOTE:  This routine uses the non-debug IO access functions.
1634  */
1635 int iwl4965_eeprom_init(struct iwl4965_priv *priv)
1636 {
1637         u16 *e = (u16 *)&priv->eeprom;
1638         u32 gp = iwl4965_read32(priv, CSR_EEPROM_GP);
1639         u32 r;
1640         int sz = sizeof(priv->eeprom);
1641         int rc;
1642         int i;
1643         u16 addr;
1644
1645         /* The EEPROM structure has several padding buffers within it
1646          * and when adding new EEPROM maps is subject to programmer errors
1647          * which may be very difficult to identify without explicitly
1648          * checking the resulting size of the eeprom map. */
1649         BUILD_BUG_ON(sizeof(priv->eeprom) != IWL_EEPROM_IMAGE_SIZE);
1650
1651         if ((gp & CSR_EEPROM_GP_VALID_MSK) == CSR_EEPROM_GP_BAD_SIGNATURE) {
1652                 IWL_ERROR("EEPROM not found, EEPROM_GP=0x%08x", gp);
1653                 return -ENOENT;
1654         }
1655
1656         /* Make sure driver (instead of uCode) is allowed to read EEPROM */
1657         rc = iwl4965_eeprom_acquire_semaphore(priv);
1658         if (rc < 0) {
1659                 IWL_ERROR("Failed to acquire EEPROM semaphore.\n");
1660                 return -ENOENT;
1661         }
1662
1663         /* eeprom is an array of 16bit values */
1664         for (addr = 0; addr < sz; addr += sizeof(u16)) {
1665                 _iwl4965_write32(priv, CSR_EEPROM_REG, addr << 1);
1666                 _iwl4965_clear_bit(priv, CSR_EEPROM_REG, CSR_EEPROM_REG_BIT_CMD);
1667
1668                 for (i = 0; i < IWL_EEPROM_ACCESS_TIMEOUT;
1669                                         i += IWL_EEPROM_ACCESS_DELAY) {
1670                         r = _iwl4965_read_direct32(priv, CSR_EEPROM_REG);
1671                         if (r & CSR_EEPROM_REG_READ_VALID_MSK)
1672                                 break;
1673                         udelay(IWL_EEPROM_ACCESS_DELAY);
1674                 }
1675
1676                 if (!(r & CSR_EEPROM_REG_READ_VALID_MSK)) {
1677                         IWL_ERROR("Time out reading EEPROM[%d]", addr);
1678                         rc = -ETIMEDOUT;
1679                         goto done;
1680                 }
1681                 e[addr / 2] = le16_to_cpu(r >> 16);
1682         }
1683         rc = 0;
1684
1685 done:
1686         iwl4965_eeprom_release_semaphore(priv);
1687         return rc;
1688 }
1689
1690 /******************************************************************************
1691  *
1692  * Misc. internal state and helper functions
1693  *
1694  ******************************************************************************/
1695 #ifdef CONFIG_IWL4965_DEBUG
1696
1697 /**
1698  * iwl4965_report_frame - dump frame to syslog during debug sessions
1699  *
1700  * You may hack this function to show different aspects of received frames,
1701  * including selective frame dumps.
1702  * group100 parameter selects whether to show 1 out of 100 good frames.
1703  *
1704  * TODO:  This was originally written for 3945, need to audit for
1705  *        proper operation with 4965.
1706  */
1707 void iwl4965_report_frame(struct iwl4965_priv *priv,
1708                       struct iwl4965_rx_packet *pkt,
1709                       struct ieee80211_hdr *header, int group100)
1710 {
1711         u32 to_us;
1712         u32 print_summary = 0;
1713         u32 print_dump = 0;     /* set to 1 to dump all frames' contents */
1714         u32 hundred = 0;
1715         u32 dataframe = 0;
1716         u16 fc;
1717         u16 seq_ctl;
1718         u16 channel;
1719         u16 phy_flags;
1720         int rate_sym;
1721         u16 length;
1722         u16 status;
1723         u16 bcn_tmr;
1724         u32 tsf_low;
1725         u64 tsf;
1726         u8 rssi;
1727         u8 agc;
1728         u16 sig_avg;
1729         u16 noise_diff;
1730         struct iwl4965_rx_frame_stats *rx_stats = IWL_RX_STATS(pkt);
1731         struct iwl4965_rx_frame_hdr *rx_hdr = IWL_RX_HDR(pkt);
1732         struct iwl4965_rx_frame_end *rx_end = IWL_RX_END(pkt);
1733         u8 *data = IWL_RX_DATA(pkt);
1734
1735         /* MAC header */
1736         fc = le16_to_cpu(header->frame_control);
1737         seq_ctl = le16_to_cpu(header->seq_ctrl);
1738
1739         /* metadata */
1740         channel = le16_to_cpu(rx_hdr->channel);
1741         phy_flags = le16_to_cpu(rx_hdr->phy_flags);
1742         rate_sym = rx_hdr->rate;
1743         length = le16_to_cpu(rx_hdr->len);
1744
1745         /* end-of-frame status and timestamp */
1746         status = le32_to_cpu(rx_end->status);
1747         bcn_tmr = le32_to_cpu(rx_end->beacon_timestamp);
1748         tsf_low = le64_to_cpu(rx_end->timestamp) & 0x0ffffffff;
1749         tsf = le64_to_cpu(rx_end->timestamp);
1750
1751         /* signal statistics */
1752         rssi = rx_stats->rssi;
1753         agc = rx_stats->agc;
1754         sig_avg = le16_to_cpu(rx_stats->sig_avg);
1755         noise_diff = le16_to_cpu(rx_stats->noise_diff);
1756
1757         to_us = !compare_ether_addr(header->addr1, priv->mac_addr);
1758
1759         /* if data frame is to us and all is good,
1760          *   (optionally) print summary for only 1 out of every 100 */
1761         if (to_us && (fc & ~IEEE80211_FCTL_PROTECTED) ==
1762             (IEEE80211_FCTL_FROMDS | IEEE80211_FTYPE_DATA)) {
1763                 dataframe = 1;
1764                 if (!group100)
1765                         print_summary = 1;      /* print each frame */
1766                 else if (priv->framecnt_to_us < 100) {
1767                         priv->framecnt_to_us++;
1768                         print_summary = 0;
1769                 } else {
1770                         priv->framecnt_to_us = 0;
1771                         print_summary = 1;
1772                         hundred = 1;
1773                 }
1774         } else {
1775                 /* print summary for all other frames */
1776                 print_summary = 1;
1777         }
1778
1779         if (print_summary) {
1780                 char *title;
1781                 u32 rate;
1782
1783                 if (hundred)
1784                         title = "100Frames";
1785                 else if (fc & IEEE80211_FCTL_RETRY)
1786                         title = "Retry";
1787                 else if (ieee80211_is_assoc_response(fc))
1788                         title = "AscRsp";
1789                 else if (ieee80211_is_reassoc_response(fc))
1790                         title = "RasRsp";
1791                 else if (ieee80211_is_probe_response(fc)) {
1792                         title = "PrbRsp";
1793                         print_dump = 1; /* dump frame contents */
1794                 } else if (ieee80211_is_beacon(fc)) {
1795                         title = "Beacon";
1796                         print_dump = 1; /* dump frame contents */
1797                 } else if (ieee80211_is_atim(fc))
1798                         title = "ATIM";
1799                 else if (ieee80211_is_auth(fc))
1800                         title = "Auth";
1801                 else if (ieee80211_is_deauth(fc))
1802                         title = "DeAuth";
1803                 else if (ieee80211_is_disassoc(fc))
1804                         title = "DisAssoc";
1805                 else
1806                         title = "Frame";
1807
1808                 rate = iwl4965_rate_index_from_plcp(rate_sym);
1809                 if (rate == -1)
1810                         rate = 0;
1811                 else
1812                         rate = iwl4965_rates[rate].ieee / 2;
1813
1814                 /* print frame summary.
1815                  * MAC addresses show just the last byte (for brevity),
1816                  *    but you can hack it to show more, if you'd like to. */
1817                 if (dataframe)
1818                         IWL_DEBUG_RX("%s: mhd=0x%04x, dst=0x%02x, "
1819                                      "len=%u, rssi=%d, chnl=%d, rate=%u, \n",
1820                                      title, fc, header->addr1[5],
1821                                      length, rssi, channel, rate);
1822                 else {
1823                         /* src/dst addresses assume managed mode */
1824                         IWL_DEBUG_RX("%s: 0x%04x, dst=0x%02x, "
1825                                      "src=0x%02x, rssi=%u, tim=%lu usec, "
1826                                      "phy=0x%02x, chnl=%d\n",
1827                                      title, fc, header->addr1[5],
1828                                      header->addr3[5], rssi,
1829                                      tsf_low - priv->scan_start_tsf,
1830                                      phy_flags, channel);
1831                 }
1832         }
1833         if (print_dump)
1834                 iwl4965_print_hex_dump(IWL_DL_RX, data, length);
1835 }
1836 #endif
1837
1838 static void iwl4965_unset_hw_setting(struct iwl4965_priv *priv)
1839 {
1840         if (priv->hw_setting.shared_virt)
1841                 pci_free_consistent(priv->pci_dev,
1842                                     sizeof(struct iwl4965_shared),
1843                                     priv->hw_setting.shared_virt,
1844                                     priv->hw_setting.shared_phys);
1845 }
1846
1847 /**
1848  * iwl4965_supported_rate_to_ie - fill in the supported rate in IE field
1849  *
1850  * return : set the bit for each supported rate insert in ie
1851  */
1852 static u16 iwl4965_supported_rate_to_ie(u8 *ie, u16 supported_rate,
1853                                     u16 basic_rate, int *left)
1854 {
1855         u16 ret_rates = 0, bit;
1856         int i;
1857         u8 *cnt = ie;
1858         u8 *rates = ie + 1;
1859
1860         for (bit = 1, i = 0; i < IWL_RATE_COUNT; i++, bit <<= 1) {
1861                 if (bit & supported_rate) {
1862                         ret_rates |= bit;
1863                         rates[*cnt] = iwl4965_rates[i].ieee |
1864                                 ((bit & basic_rate) ? 0x80 : 0x00);
1865                         (*cnt)++;
1866                         (*left)--;
1867                         if ((*left <= 0) ||
1868                             (*cnt >= IWL_SUPPORTED_RATES_IE_LEN))
1869                                 break;
1870                 }
1871         }
1872
1873         return ret_rates;
1874 }
1875
1876 #ifdef CONFIG_IWL4965_HT
1877 void static iwl4965_set_ht_capab(struct ieee80211_hw *hw,
1878                              struct ieee80211_ht_capability *ht_cap,
1879                              u8 use_wide_chan);
1880 #endif
1881
1882 /**
1883  * iwl4965_fill_probe_req - fill in all required fields and IE for probe request
1884  */
1885 static u16 iwl4965_fill_probe_req(struct iwl4965_priv *priv,
1886                               struct ieee80211_mgmt *frame,
1887                               int left, int is_direct)
1888 {
1889         int len = 0;
1890         u8 *pos = NULL;
1891         u16 active_rates, ret_rates, cck_rates, active_rate_basic;
1892
1893         /* Make sure there is enough space for the probe request,
1894          * two mandatory IEs and the data */
1895         left -= 24;
1896         if (left < 0)
1897                 return 0;
1898         len += 24;
1899
1900         frame->frame_control = cpu_to_le16(IEEE80211_STYPE_PROBE_REQ);
1901         memcpy(frame->da, iwl4965_broadcast_addr, ETH_ALEN);
1902         memcpy(frame->sa, priv->mac_addr, ETH_ALEN);
1903         memcpy(frame->bssid, iwl4965_broadcast_addr, ETH_ALEN);
1904         frame->seq_ctrl = 0;
1905
1906         /* fill in our indirect SSID IE */
1907         /* ...next IE... */
1908
1909         left -= 2;
1910         if (left < 0)
1911                 return 0;
1912         len += 2;
1913         pos = &(frame->u.probe_req.variable[0]);
1914         *pos++ = WLAN_EID_SSID;
1915         *pos++ = 0;
1916
1917         /* fill in our direct SSID IE... */
1918         if (is_direct) {
1919                 /* ...next IE... */
1920                 left -= 2 + priv->essid_len;
1921                 if (left < 0)
1922                         return 0;
1923                 /* ... fill it in... */
1924                 *pos++ = WLAN_EID_SSID;
1925                 *pos++ = priv->essid_len;
1926                 memcpy(pos, priv->essid, priv->essid_len);
1927                 pos += priv->essid_len;
1928                 len += 2 + priv->essid_len;
1929         }
1930
1931         /* fill in supported rate */
1932         /* ...next IE... */
1933         left -= 2;
1934         if (left < 0)
1935                 return 0;
1936
1937         /* ... fill it in... */
1938         *pos++ = WLAN_EID_SUPP_RATES;
1939         *pos = 0;
1940
1941         /* exclude 60M rate */
1942         active_rates = priv->rates_mask;
1943         active_rates &= ~IWL_RATE_60M_MASK;
1944
1945         active_rate_basic = active_rates & IWL_BASIC_RATES_MASK;
1946
1947         cck_rates = IWL_CCK_RATES_MASK & active_rates;
1948         ret_rates = iwl4965_supported_rate_to_ie(pos, cck_rates,
1949                         active_rate_basic, &left);
1950         active_rates &= ~ret_rates;
1951
1952         ret_rates = iwl4965_supported_rate_to_ie(pos, active_rates,
1953                                  active_rate_basic, &left);
1954         active_rates &= ~ret_rates;
1955
1956         len += 2 + *pos;
1957         pos += (*pos) + 1;
1958         if (active_rates == 0)
1959                 goto fill_end;
1960
1961         /* fill in supported extended rate */
1962         /* ...next IE... */
1963         left -= 2;
1964         if (left < 0)
1965                 return 0;
1966         /* ... fill it in... */
1967         *pos++ = WLAN_EID_EXT_SUPP_RATES;
1968         *pos = 0;
1969         iwl4965_supported_rate_to_ie(pos, active_rates,
1970                                  active_rate_basic, &left);
1971         if (*pos > 0)
1972                 len += 2 + *pos;
1973
1974 #ifdef CONFIG_IWL4965_HT
1975         if (is_direct && priv->is_ht_enabled) {
1976                 u8 use_wide_chan = 1;
1977
1978                 if (priv->channel_width != IWL_CHANNEL_WIDTH_40MHZ)
1979                         use_wide_chan = 0;
1980                 pos += (*pos) + 1;
1981                 *pos++ = WLAN_EID_HT_CAPABILITY;
1982                 *pos++ = sizeof(struct ieee80211_ht_capability);
1983                 iwl4965_set_ht_capab(NULL, (struct ieee80211_ht_capability *)pos,
1984                                  use_wide_chan);
1985                 len += 2 + sizeof(struct ieee80211_ht_capability);
1986         }
1987 #endif  /*CONFIG_IWL4965_HT */
1988
1989  fill_end:
1990         return (u16)len;
1991 }
1992
1993 /*
1994  * QoS  support
1995 */
1996 #ifdef CONFIG_IWL4965_QOS
1997 static int iwl4965_send_qos_params_command(struct iwl4965_priv *priv,
1998                                        struct iwl4965_qosparam_cmd *qos)
1999 {
2000
2001         return iwl4965_send_cmd_pdu(priv, REPLY_QOS_PARAM,
2002                                 sizeof(struct iwl4965_qosparam_cmd), qos);
2003 }
2004
2005 static void iwl4965_reset_qos(struct iwl4965_priv *priv)
2006 {
2007         u16 cw_min = 15;
2008         u16 cw_max = 1023;
2009         u8 aifs = 2;
2010         u8 is_legacy = 0;
2011         unsigned long flags;
2012         int i;
2013
2014         spin_lock_irqsave(&priv->lock, flags);
2015         priv->qos_data.qos_active = 0;
2016
2017         if (priv->iw_mode == IEEE80211_IF_TYPE_IBSS) {
2018                 if (priv->qos_data.qos_enable)
2019                         priv->qos_data.qos_active = 1;
2020                 if (!(priv->active_rate & 0xfff0)) {
2021                         cw_min = 31;
2022                         is_legacy = 1;
2023                 }
2024         } else if (priv->iw_mode == IEEE80211_IF_TYPE_AP) {
2025                 if (priv->qos_data.qos_enable)
2026                         priv->qos_data.qos_active = 1;
2027         } else if (!(priv->staging_rxon.flags & RXON_FLG_SHORT_SLOT_MSK)) {
2028                 cw_min = 31;
2029                 is_legacy = 1;
2030         }
2031
2032         if (priv->qos_data.qos_active)
2033                 aifs = 3;
2034
2035         priv->qos_data.def_qos_parm.ac[0].cw_min = cpu_to_le16(cw_min);
2036         priv->qos_data.def_qos_parm.ac[0].cw_max = cpu_to_le16(cw_max);
2037         priv->qos_data.def_qos_parm.ac[0].aifsn = aifs;
2038         priv->qos_data.def_qos_parm.ac[0].edca_txop = 0;
2039         priv->qos_data.def_qos_parm.ac[0].reserved1 = 0;
2040
2041         if (priv->qos_data.qos_active) {
2042                 i = 1;
2043                 priv->qos_data.def_qos_parm.ac[i].cw_min = cpu_to_le16(cw_min);
2044                 priv->qos_data.def_qos_parm.ac[i].cw_max = cpu_to_le16(cw_max);
2045                 priv->qos_data.def_qos_parm.ac[i].aifsn = 7;
2046                 priv->qos_data.def_qos_parm.ac[i].edca_txop = 0;
2047                 priv->qos_data.def_qos_parm.ac[i].reserved1 = 0;
2048
2049                 i = 2;
2050                 priv->qos_data.def_qos_parm.ac[i].cw_min =
2051                         cpu_to_le16((cw_min + 1) / 2 - 1);
2052                 priv->qos_data.def_qos_parm.ac[i].cw_max =
2053                         cpu_to_le16(cw_max);
2054                 priv->qos_data.def_qos_parm.ac[i].aifsn = 2;
2055                 if (is_legacy)
2056                         priv->qos_data.def_qos_parm.ac[i].edca_txop =
2057                                 cpu_to_le16(6016);
2058                 else
2059                         priv->qos_data.def_qos_parm.ac[i].edca_txop =
2060                                 cpu_to_le16(3008);
2061                 priv->qos_data.def_qos_parm.ac[i].reserved1 = 0;
2062
2063                 i = 3;
2064                 priv->qos_data.def_qos_parm.ac[i].cw_min =
2065                         cpu_to_le16((cw_min + 1) / 4 - 1);
2066                 priv->qos_data.def_qos_parm.ac[i].cw_max =
2067                         cpu_to_le16((cw_max + 1) / 2 - 1);
2068                 priv->qos_data.def_qos_parm.ac[i].aifsn = 2;
2069                 priv->qos_data.def_qos_parm.ac[i].reserved1 = 0;
2070                 if (is_legacy)
2071                         priv->qos_data.def_qos_parm.ac[i].edca_txop =
2072                                 cpu_to_le16(3264);
2073                 else
2074                         priv->qos_data.def_qos_parm.ac[i].edca_txop =
2075                                 cpu_to_le16(1504);
2076         } else {
2077                 for (i = 1; i < 4; i++) {
2078                         priv->qos_data.def_qos_parm.ac[i].cw_min =
2079                                 cpu_to_le16(cw_min);
2080                         priv->qos_data.def_qos_parm.ac[i].cw_max =
2081                                 cpu_to_le16(cw_max);
2082                         priv->qos_data.def_qos_parm.ac[i].aifsn = aifs;
2083                         priv->qos_data.def_qos_parm.ac[i].edca_txop = 0;
2084                         priv->qos_data.def_qos_parm.ac[i].reserved1 = 0;
2085                 }
2086         }
2087         IWL_DEBUG_QOS("set QoS to default \n");
2088
2089         spin_unlock_irqrestore(&priv->lock, flags);
2090 }
2091
2092 static void iwl4965_activate_qos(struct iwl4965_priv *priv, u8 force)
2093 {
2094         unsigned long flags;
2095
2096         if (test_bit(STATUS_EXIT_PENDING, &priv->status))
2097                 return;
2098
2099         if (!priv->qos_data.qos_enable)
2100                 return;
2101
2102         spin_lock_irqsave(&priv->lock, flags);
2103         priv->qos_data.def_qos_parm.qos_flags = 0;
2104
2105         if (priv->qos_data.qos_cap.q_AP.queue_request &&
2106             !priv->qos_data.qos_cap.q_AP.txop_request)
2107                 priv->qos_data.def_qos_parm.qos_flags |=
2108                         QOS_PARAM_FLG_TXOP_TYPE_MSK;
2109         if (priv->qos_data.qos_active)
2110                 priv->qos_data.def_qos_parm.qos_flags |=
2111                         QOS_PARAM_FLG_UPDATE_EDCA_MSK;
2112
2113 #ifdef CONFIG_IWL4965_HT
2114         if (priv->is_ht_enabled && priv->current_assoc_ht.is_ht)
2115                 priv->qos_data.def_qos_parm.qos_flags |= QOS_PARAM_FLG_TGN_MSK;
2116 #endif /* CONFIG_IWL4965_HT */
2117
2118         spin_unlock_irqrestore(&priv->lock, flags);
2119
2120         if (force || iwl4965_is_associated(priv)) {
2121                 IWL_DEBUG_QOS("send QoS cmd with Qos active=%d FLAGS=0x%X\n",
2122                                 priv->qos_data.qos_active,
2123                                 priv->qos_data.def_qos_parm.qos_flags);
2124
2125                 iwl4965_send_qos_params_command(priv,
2126                                 &(priv->qos_data.def_qos_parm));
2127         }
2128 }
2129
2130 #endif /* CONFIG_IWL4965_QOS */
2131 /*
2132  * Power management (not Tx power!) functions
2133  */
2134 #define MSEC_TO_USEC 1024
2135
2136 #define NOSLP __constant_cpu_to_le16(0), 0, 0
2137 #define SLP IWL_POWER_DRIVER_ALLOW_SLEEP_MSK, 0, 0
2138 #define SLP_TIMEOUT(T) __constant_cpu_to_le32((T) * MSEC_TO_USEC)
2139 #define SLP_VEC(X0, X1, X2, X3, X4) {__constant_cpu_to_le32(X0), \
2140                                      __constant_cpu_to_le32(X1), \
2141                                      __constant_cpu_to_le32(X2), \
2142                                      __constant_cpu_to_le32(X3), \
2143                                      __constant_cpu_to_le32(X4)}
2144
2145
2146 /* default power management (not Tx power) table values */
2147 /* for tim  0-10 */
2148 static struct iwl4965_power_vec_entry range_0[IWL_POWER_AC] = {
2149         {{NOSLP, SLP_TIMEOUT(0), SLP_TIMEOUT(0), SLP_VEC(0, 0, 0, 0, 0)}, 0},
2150         {{SLP, SLP_TIMEOUT(200), SLP_TIMEOUT(500), SLP_VEC(1, 2, 3, 4, 4)}, 0},
2151         {{SLP, SLP_TIMEOUT(200), SLP_TIMEOUT(300), SLP_VEC(2, 4, 6, 7, 7)}, 0},
2152         {{SLP, SLP_TIMEOUT(50), SLP_TIMEOUT(100), SLP_VEC(2, 6, 9, 9, 10)}, 0},
2153         {{SLP, SLP_TIMEOUT(50), SLP_TIMEOUT(25), SLP_VEC(2, 7, 9, 9, 10)}, 1},
2154         {{SLP, SLP_TIMEOUT(25), SLP_TIMEOUT(25), SLP_VEC(4, 7, 10, 10, 10)}, 1}
2155 };
2156
2157 /* for tim > 10 */
2158 static struct iwl4965_power_vec_entry range_1[IWL_POWER_AC] = {
2159         {{NOSLP, SLP_TIMEOUT(0), SLP_TIMEOUT(0), SLP_VEC(0, 0, 0, 0, 0)}, 0},
2160         {{SLP, SLP_TIMEOUT(200), SLP_TIMEOUT(500),
2161                  SLP_VEC(1, 2, 3, 4, 0xFF)}, 0},
2162         {{SLP, SLP_TIMEOUT(200), SLP_TIMEOUT(300),
2163                  SLP_VEC(2, 4, 6, 7, 0xFF)}, 0},
2164         {{SLP, SLP_TIMEOUT(50), SLP_TIMEOUT(100),
2165                  SLP_VEC(2, 6, 9, 9, 0xFF)}, 0},
2166         {{SLP, SLP_TIMEOUT(50), SLP_TIMEOUT(25), SLP_VEC(2, 7, 9, 9, 0xFF)}, 0},
2167         {{SLP, SLP_TIMEOUT(25), SLP_TIMEOUT(25),
2168                  SLP_VEC(4, 7, 10, 10, 0xFF)}, 0}
2169 };
2170
2171 int iwl4965_power_init_handle(struct iwl4965_priv *priv)
2172 {
2173         int rc = 0, i;
2174         struct iwl4965_power_mgr *pow_data;
2175         int size = sizeof(struct iwl4965_power_vec_entry) * IWL_POWER_AC;
2176         u16 pci_pm;
2177
2178         IWL_DEBUG_POWER("Initialize power \n");
2179
2180         pow_data = &(priv->power_data);
2181
2182         memset(pow_data, 0, sizeof(*pow_data));
2183
2184         pow_data->active_index = IWL_POWER_RANGE_0;
2185         pow_data->dtim_val = 0xffff;
2186
2187         memcpy(&pow_data->pwr_range_0[0], &range_0[0], size);
2188         memcpy(&pow_data->pwr_range_1[0], &range_1[0], size);
2189
2190         rc = pci_read_config_word(priv->pci_dev, PCI_LINK_CTRL, &pci_pm);
2191         if (rc != 0)
2192                 return 0;
2193         else {
2194                 struct iwl4965_powertable_cmd *cmd;
2195
2196                 IWL_DEBUG_POWER("adjust power command flags\n");
2197
2198                 for (i = 0; i < IWL_POWER_AC; i++) {
2199                         cmd = &pow_data->pwr_range_0[i].cmd;
2200
2201                         if (pci_pm & 0x1)
2202                                 cmd->flags &= ~IWL_POWER_PCI_PM_MSK;
2203                         else
2204                                 cmd->flags |= IWL_POWER_PCI_PM_MSK;
2205                 }
2206         }
2207         return rc;
2208 }
2209
2210 static int iwl4965_update_power_cmd(struct iwl4965_priv *priv,
2211                                 struct iwl4965_powertable_cmd *cmd, u32 mode)
2212 {
2213         int rc = 0, i;
2214         u8 skip;
2215         u32 max_sleep = 0;
2216         struct iwl4965_power_vec_entry *range;
2217         u8 period = 0;
2218         struct iwl4965_power_mgr *pow_data;
2219
2220         if (mode > IWL_POWER_INDEX_5) {
2221                 IWL_DEBUG_POWER("Error invalid power mode \n");
2222                 return -1;
2223         }
2224         pow_data = &(priv->power_data);
2225
2226         if (pow_data->active_index == IWL_POWER_RANGE_0)
2227                 range = &pow_data->pwr_range_0[0];
2228         else
2229                 range = &pow_data->pwr_range_1[1];
2230
2231         memcpy(cmd, &range[mode].cmd, sizeof(struct iwl4965_powertable_cmd));
2232
2233 #ifdef IWL_MAC80211_DISABLE
2234         if (priv->assoc_network != NULL) {
2235                 unsigned long flags;
2236
2237                 period = priv->assoc_network->tim.tim_period;
2238         }
2239 #endif  /*IWL_MAC80211_DISABLE */
2240         skip = range[mode].no_dtim;
2241
2242         if (period == 0) {
2243                 period = 1;
2244                 skip = 0;
2245         }
2246
2247         if (skip == 0) {
2248                 max_sleep = period;
2249                 cmd->flags &= ~IWL_POWER_SLEEP_OVER_DTIM_MSK;
2250         } else {
2251                 __le32 slp_itrvl = cmd->sleep_interval[IWL_POWER_VEC_SIZE - 1];
2252                 max_sleep = (le32_to_cpu(slp_itrvl) / period) * period;
2253                 cmd->flags |= IWL_POWER_SLEEP_OVER_DTIM_MSK;
2254         }
2255
2256         for (i = 0; i < IWL_POWER_VEC_SIZE; i++) {
2257                 if (le32_to_cpu(cmd->sleep_interval[i]) > max_sleep)
2258                         cmd->sleep_interval[i] = cpu_to_le32(max_sleep);
2259         }
2260
2261         IWL_DEBUG_POWER("Flags value = 0x%08X\n", cmd->flags);
2262         IWL_DEBUG_POWER("Tx timeout = %u\n", le32_to_cpu(cmd->tx_data_timeout));
2263         IWL_DEBUG_POWER("Rx timeout = %u\n", le32_to_cpu(cmd->rx_data_timeout));
2264         IWL_DEBUG_POWER("Sleep interval vector = { %d , %d , %d , %d , %d }\n",
2265                         le32_to_cpu(cmd->sleep_interval[0]),
2266                         le32_to_cpu(cmd->sleep_interval[1]),
2267                         le32_to_cpu(cmd->sleep_interval[2]),
2268                         le32_to_cpu(cmd->sleep_interval[3]),
2269                         le32_to_cpu(cmd->sleep_interval[4]));
2270
2271         return rc;
2272 }
2273
2274 static int iwl4965_send_power_mode(struct iwl4965_priv *priv, u32 mode)
2275 {
2276         u32 uninitialized_var(final_mode);
2277         int rc;
2278         struct iwl4965_powertable_cmd cmd;
2279
2280         /* If on battery, set to 3,
2281          * if plugged into AC power, set to CAM ("continuously aware mode"),
2282          * else user level */
2283         switch (mode) {
2284         case IWL_POWER_BATTERY:
2285                 final_mode = IWL_POWER_INDEX_3;
2286                 break;
2287         case IWL_POWER_AC:
2288                 final_mode = IWL_POWER_MODE_CAM;
2289                 break;
2290         default:
2291                 final_mode = mode;
2292                 break;
2293         }
2294
2295         cmd.keep_alive_beacons = 0;
2296
2297         iwl4965_update_power_cmd(priv, &cmd, final_mode);
2298
2299         rc = iwl4965_send_cmd_pdu(priv, POWER_TABLE_CMD, sizeof(cmd), &cmd);
2300
2301         if (final_mode == IWL_POWER_MODE_CAM)
2302                 clear_bit(STATUS_POWER_PMI, &priv->status);
2303         else
2304                 set_bit(STATUS_POWER_PMI, &priv->status);
2305
2306         return rc;
2307 }
2308
2309 int iwl4965_is_network_packet(struct iwl4965_priv *priv, struct ieee80211_hdr *header)
2310 {
2311         /* Filter incoming packets to determine if they are targeted toward
2312          * this network, discarding packets coming from ourselves */
2313         switch (priv->iw_mode) {
2314         case IEEE80211_IF_TYPE_IBSS: /* Header: Dest. | Source    | BSSID */
2315                 /* packets from our adapter are dropped (echo) */
2316                 if (!compare_ether_addr(header->addr2, priv->mac_addr))
2317                         return 0;
2318                 /* {broad,multi}cast packets to our IBSS go through */
2319                 if (is_multicast_ether_addr(header->addr1))
2320                         return !compare_ether_addr(header->addr3, priv->bssid);
2321                 /* packets to our adapter go through */
2322                 return !compare_ether_addr(header->addr1, priv->mac_addr);
2323         case IEEE80211_IF_TYPE_STA: /* Header: Dest. | AP{BSSID} | Source */
2324                 /* packets from our adapter are dropped (echo) */
2325                 if (!compare_ether_addr(header->addr3, priv->mac_addr))
2326                         return 0;
2327                 /* {broad,multi}cast packets to our BSS go through */
2328                 if (is_multicast_ether_addr(header->addr1))
2329                         return !compare_ether_addr(header->addr2, priv->bssid);
2330                 /* packets to our adapter go through */
2331                 return !compare_ether_addr(header->addr1, priv->mac_addr);
2332         }
2333
2334         return 1;
2335 }
2336
2337 #define TX_STATUS_ENTRY(x) case TX_STATUS_FAIL_ ## x: return #x
2338
2339 static const char *iwl4965_get_tx_fail_reason(u32 status)
2340 {
2341         switch (status & TX_STATUS_MSK) {
2342         case TX_STATUS_SUCCESS:
2343                 return "SUCCESS";
2344                 TX_STATUS_ENTRY(SHORT_LIMIT);
2345                 TX_STATUS_ENTRY(LONG_LIMIT);
2346                 TX_STATUS_ENTRY(FIFO_UNDERRUN);
2347                 TX_STATUS_ENTRY(MGMNT_ABORT);
2348                 TX_STATUS_ENTRY(NEXT_FRAG);
2349                 TX_STATUS_ENTRY(LIFE_EXPIRE);
2350                 TX_STATUS_ENTRY(DEST_PS);
2351                 TX_STATUS_ENTRY(ABORTED);
2352                 TX_STATUS_ENTRY(BT_RETRY);
2353                 TX_STATUS_ENTRY(STA_INVALID);
2354                 TX_STATUS_ENTRY(FRAG_DROPPED);
2355                 TX_STATUS_ENTRY(TID_DISABLE);
2356                 TX_STATUS_ENTRY(FRAME_FLUSHED);
2357                 TX_STATUS_ENTRY(INSUFFICIENT_CF_POLL);
2358                 TX_STATUS_ENTRY(TX_LOCKED);
2359                 TX_STATUS_ENTRY(NO_BEACON_ON_RADAR);
2360         }
2361
2362         return "UNKNOWN";
2363 }
2364
2365 /**
2366  * iwl4965_scan_cancel - Cancel any currently executing HW scan
2367  *
2368  * NOTE: priv->mutex is not required before calling this function
2369  */
2370 static int iwl4965_scan_cancel(struct iwl4965_priv *priv)
2371 {
2372         if (!test_bit(STATUS_SCAN_HW, &priv->status)) {
2373                 clear_bit(STATUS_SCANNING, &priv->status);
2374                 return 0;
2375         }
2376
2377         if (test_bit(STATUS_SCANNING, &priv->status)) {
2378                 if (!test_bit(STATUS_SCAN_ABORTING, &priv->status)) {
2379                         IWL_DEBUG_SCAN("Queuing scan abort.\n");
2380                         set_bit(STATUS_SCAN_ABORTING, &priv->status);
2381                         queue_work(priv->workqueue, &priv->abort_scan);
2382
2383                 } else
2384                         IWL_DEBUG_SCAN("Scan abort already in progress.\n");
2385
2386                 return test_bit(STATUS_SCANNING, &priv->status);
2387         }
2388
2389         return 0;
2390 }
2391
2392 /**
2393  * iwl4965_scan_cancel_timeout - Cancel any currently executing HW scan
2394  * @ms: amount of time to wait (in milliseconds) for scan to abort
2395  *
2396  * NOTE: priv->mutex must be held before calling this function
2397  */
2398 static int iwl4965_scan_cancel_timeout(struct iwl4965_priv *priv, unsigned long ms)
2399 {
2400         unsigned long now = jiffies;
2401         int ret;
2402
2403         ret = iwl4965_scan_cancel(priv);
2404         if (ret && ms) {
2405                 mutex_unlock(&priv->mutex);
2406                 while (!time_after(jiffies, now + msecs_to_jiffies(ms)) &&
2407                                 test_bit(STATUS_SCANNING, &priv->status))
2408                         msleep(1);
2409                 mutex_lock(&priv->mutex);
2410
2411                 return test_bit(STATUS_SCANNING, &priv->status);
2412         }
2413
2414         return ret;
2415 }
2416
2417 static void iwl4965_sequence_reset(struct iwl4965_priv *priv)
2418 {
2419         /* Reset ieee stats */
2420
2421         /* We don't reset the net_device_stats (ieee->stats) on
2422          * re-association */
2423
2424         priv->last_seq_num = -1;
2425         priv->last_frag_num = -1;
2426         priv->last_packet_time = 0;
2427
2428         iwl4965_scan_cancel(priv);
2429 }
2430
2431 #define MAX_UCODE_BEACON_INTERVAL       4096
2432 #define INTEL_CONN_LISTEN_INTERVAL      __constant_cpu_to_le16(0xA)
2433
2434 static __le16 iwl4965_adjust_beacon_interval(u16 beacon_val)
2435 {
2436         u16 new_val = 0;
2437         u16 beacon_factor = 0;
2438
2439         beacon_factor =
2440             (beacon_val + MAX_UCODE_BEACON_INTERVAL)
2441                 / MAX_UCODE_BEACON_INTERVAL;
2442         new_val = beacon_val / beacon_factor;
2443
2444         return cpu_to_le16(new_val);
2445 }
2446
2447 static void iwl4965_setup_rxon_timing(struct iwl4965_priv *priv)
2448 {
2449         u64 interval_tm_unit;
2450         u64 tsf, result;
2451         unsigned long flags;
2452         struct ieee80211_conf *conf = NULL;
2453         u16 beacon_int = 0;
2454
2455         conf = ieee80211_get_hw_conf(priv->hw);
2456
2457         spin_lock_irqsave(&priv->lock, flags);
2458         priv->rxon_timing.timestamp.dw[1] = cpu_to_le32(priv->timestamp1);
2459         priv->rxon_timing.timestamp.dw[0] = cpu_to_le32(priv->timestamp0);
2460
2461         priv->rxon_timing.listen_interval = INTEL_CONN_LISTEN_INTERVAL;
2462
2463         tsf = priv->timestamp1;
2464         tsf = ((tsf << 32) | priv->timestamp0);
2465
2466         beacon_int = priv->beacon_int;
2467         spin_unlock_irqrestore(&priv->lock, flags);
2468
2469         if (priv->iw_mode == IEEE80211_IF_TYPE_STA) {
2470                 if (beacon_int == 0) {
2471                         priv->rxon_timing.beacon_interval = cpu_to_le16(100);
2472                         priv->rxon_timing.beacon_init_val = cpu_to_le32(102400);
2473                 } else {
2474                         priv->rxon_timing.beacon_interval =
2475                                 cpu_to_le16(beacon_int);
2476                         priv->rxon_timing.beacon_interval =
2477                             iwl4965_adjust_beacon_interval(
2478                                 le16_to_cpu(priv->rxon_timing.beacon_interval));
2479                 }
2480
2481                 priv->rxon_timing.atim_window = 0;
2482         } else {
2483                 priv->rxon_timing.beacon_interval =
2484                         iwl4965_adjust_beacon_interval(conf->beacon_int);
2485                 /* TODO: we need to get atim_window from upper stack
2486                  * for now we set to 0 */
2487                 priv->rxon_timing.atim_window = 0;
2488         }
2489
2490         interval_tm_unit =
2491                 (le16_to_cpu(priv->rxon_timing.beacon_interval) * 1024);
2492         result = do_div(tsf, interval_tm_unit);
2493         priv->rxon_timing.beacon_init_val =
2494             cpu_to_le32((u32) ((u64) interval_tm_unit - result));
2495
2496         IWL_DEBUG_ASSOC
2497             ("beacon interval %d beacon timer %d beacon tim %d\n",
2498                 le16_to_cpu(priv->rxon_timing.beacon_interval),
2499                 le32_to_cpu(priv->rxon_timing.beacon_init_val),
2500                 le16_to_cpu(priv->rxon_timing.atim_window));
2501 }
2502
2503 static int iwl4965_scan_initiate(struct iwl4965_priv *priv)
2504 {
2505         if (priv->iw_mode == IEEE80211_IF_TYPE_AP) {
2506                 IWL_ERROR("APs don't scan.\n");
2507                 return 0;
2508         }
2509
2510         if (!iwl4965_is_ready_rf(priv)) {
2511                 IWL_DEBUG_SCAN("Aborting scan due to not ready.\n");
2512                 return -EIO;
2513         }
2514
2515         if (test_bit(STATUS_SCANNING, &priv->status)) {
2516                 IWL_DEBUG_SCAN("Scan already in progress.\n");
2517                 return -EAGAIN;
2518         }
2519
2520         if (test_bit(STATUS_SCAN_ABORTING, &priv->status)) {
2521                 IWL_DEBUG_SCAN("Scan request while abort pending.  "
2522                                "Queuing.\n");
2523                 return -EAGAIN;
2524         }
2525
2526         IWL_DEBUG_INFO("Starting scan...\n");
2527         priv->scan_bands = 2;
2528         set_bit(STATUS_SCANNING, &priv->status);
2529         priv->scan_start = jiffies;
2530         priv->scan_pass_start = priv->scan_start;
2531
2532         queue_work(priv->workqueue, &priv->request_scan);
2533
2534         return 0;
2535 }
2536
2537 static int iwl4965_set_rxon_hwcrypto(struct iwl4965_priv *priv, int hw_decrypt)
2538 {
2539         struct iwl4965_rxon_cmd *rxon = &priv->staging_rxon;
2540
2541         if (hw_decrypt)
2542                 rxon->filter_flags &= ~RXON_FILTER_DIS_DECRYPT_MSK;
2543         else
2544                 rxon->filter_flags |= RXON_FILTER_DIS_DECRYPT_MSK;
2545
2546         return 0;
2547 }
2548
2549 static void iwl4965_set_flags_for_phymode(struct iwl4965_priv *priv, u8 phymode)
2550 {
2551         if (phymode == MODE_IEEE80211A) {
2552                 priv->staging_rxon.flags &=
2553                     ~(RXON_FLG_BAND_24G_MSK | RXON_FLG_AUTO_DETECT_MSK
2554                       | RXON_FLG_CCK_MSK);
2555                 priv->staging_rxon.flags |= RXON_FLG_SHORT_SLOT_MSK;
2556         } else {
2557                 /* Copied from iwl4965_bg_post_associate() */
2558                 if (priv->assoc_capability & WLAN_CAPABILITY_SHORT_SLOT_TIME)
2559                         priv->staging_rxon.flags |= RXON_FLG_SHORT_SLOT_MSK;
2560                 else
2561                         priv->staging_rxon.flags &= ~RXON_FLG_SHORT_SLOT_MSK;
2562
2563                 if (priv->iw_mode == IEEE80211_IF_TYPE_IBSS)
2564                         priv->staging_rxon.flags &= ~RXON_FLG_SHORT_SLOT_MSK;
2565
2566                 priv->staging_rxon.flags |= RXON_FLG_BAND_24G_MSK;
2567                 priv->staging_rxon.flags |= RXON_FLG_AUTO_DETECT_MSK;
2568                 priv->staging_rxon.flags &= ~RXON_FLG_CCK_MSK;
2569         }
2570 }
2571
2572 /*
2573  * initialize rxon structure with default values from eeprom
2574  */
2575 static void iwl4965_connection_init_rx_config(struct iwl4965_priv *priv)
2576 {
2577         const struct iwl4965_channel_info *ch_info;
2578
2579         memset(&priv->staging_rxon, 0, sizeof(priv->staging_rxon));
2580
2581         switch (priv->iw_mode) {
2582         case IEEE80211_IF_TYPE_AP:
2583                 priv->staging_rxon.dev_type = RXON_DEV_TYPE_AP;
2584                 break;
2585
2586         case IEEE80211_IF_TYPE_STA:
2587                 priv->staging_rxon.dev_type = RXON_DEV_TYPE_ESS;
2588                 priv->staging_rxon.filter_flags = RXON_FILTER_ACCEPT_GRP_MSK;
2589                 break;
2590
2591         case IEEE80211_IF_TYPE_IBSS:
2592                 priv->staging_rxon.dev_type = RXON_DEV_TYPE_IBSS;
2593                 priv->staging_rxon.flags = RXON_FLG_SHORT_PREAMBLE_MSK;
2594                 priv->staging_rxon.filter_flags = RXON_FILTER_BCON_AWARE_MSK |
2595                                                   RXON_FILTER_ACCEPT_GRP_MSK;
2596                 break;
2597
2598         case IEEE80211_IF_TYPE_MNTR:
2599                 priv->staging_rxon.dev_type = RXON_DEV_TYPE_SNIFFER;
2600                 priv->staging_rxon.filter_flags = RXON_FILTER_PROMISC_MSK |
2601                     RXON_FILTER_CTL2HOST_MSK | RXON_FILTER_ACCEPT_GRP_MSK;
2602                 break;
2603         }
2604
2605 #if 0
2606         /* TODO:  Figure out when short_preamble would be set and cache from
2607          * that */
2608         if (!hw_to_local(priv->hw)->short_preamble)
2609                 priv->staging_rxon.flags &= ~RXON_FLG_SHORT_PREAMBLE_MSK;
2610         else
2611                 priv->staging_rxon.flags |= RXON_FLG_SHORT_PREAMBLE_MSK;
2612 #endif
2613
2614         ch_info = iwl4965_get_channel_info(priv, priv->phymode,
2615                                        le16_to_cpu(priv->staging_rxon.channel));
2616
2617         if (!ch_info)
2618                 ch_info = &priv->channel_info[0];
2619
2620         /*
2621          * in some case A channels are all non IBSS
2622          * in this case force B/G channel
2623          */
2624         if ((priv->iw_mode == IEEE80211_IF_TYPE_IBSS) &&
2625             !(is_channel_ibss(ch_info)))
2626                 ch_info = &priv->channel_info[0];
2627
2628         priv->staging_rxon.channel = cpu_to_le16(ch_info->channel);
2629         if (is_channel_a_band(ch_info))
2630                 priv->phymode = MODE_IEEE80211A;
2631         else
2632                 priv->phymode = MODE_IEEE80211G;
2633
2634         iwl4965_set_flags_for_phymode(priv, priv->phymode);
2635
2636         priv->staging_rxon.ofdm_basic_rates =
2637             (IWL_OFDM_RATES_MASK >> IWL_FIRST_OFDM_RATE) & 0xFF;
2638         priv->staging_rxon.cck_basic_rates =
2639             (IWL_CCK_RATES_MASK >> IWL_FIRST_CCK_RATE) & 0xF;
2640
2641         priv->staging_rxon.flags &= ~(RXON_FLG_CHANNEL_MODE_MIXED_MSK |
2642                                         RXON_FLG_CHANNEL_MODE_PURE_40_MSK);
2643         memcpy(priv->staging_rxon.node_addr, priv->mac_addr, ETH_ALEN);
2644         memcpy(priv->staging_rxon.wlap_bssid_addr, priv->mac_addr, ETH_ALEN);
2645         priv->staging_rxon.ofdm_ht_single_stream_basic_rates = 0xff;
2646         priv->staging_rxon.ofdm_ht_dual_stream_basic_rates = 0xff;
2647         iwl4965_set_rxon_chain(priv);
2648 }
2649
2650 static int iwl4965_set_mode(struct iwl4965_priv *priv, int mode)
2651 {
2652         if (!iwl4965_is_ready_rf(priv))
2653                 return -EAGAIN;
2654
2655         if (mode == IEEE80211_IF_TYPE_IBSS) {
2656                 const struct iwl4965_channel_info *ch_info;
2657
2658                 ch_info = iwl4965_get_channel_info(priv,
2659                         priv->phymode,
2660                         le16_to_cpu(priv->staging_rxon.channel));
2661
2662                 if (!ch_info || !is_channel_ibss(ch_info)) {
2663                         IWL_ERROR("channel %d not IBSS channel\n",
2664                                   le16_to_cpu(priv->staging_rxon.channel));
2665                         return -EINVAL;
2666                 }
2667         }
2668
2669         cancel_delayed_work(&priv->scan_check);
2670         if (iwl4965_scan_cancel_timeout(priv, 100)) {
2671                 IWL_WARNING("Aborted scan still in progress after 100ms\n");
2672                 IWL_DEBUG_MAC80211("leaving - scan abort failed.\n");
2673                 return -EAGAIN;
2674         }
2675
2676         priv->iw_mode = mode;
2677
2678         iwl4965_connection_init_rx_config(priv);
2679         memcpy(priv->staging_rxon.node_addr, priv->mac_addr, ETH_ALEN);
2680
2681         iwl4965_clear_stations_table(priv);
2682
2683         iwl4965_commit_rxon(priv);
2684
2685         return 0;
2686 }
2687
2688 static void iwl4965_build_tx_cmd_hwcrypto(struct iwl4965_priv *priv,
2689                                       struct ieee80211_tx_control *ctl,
2690                                       struct iwl4965_cmd *cmd,
2691                                       struct sk_buff *skb_frag,
2692                                       int last_frag)
2693 {
2694         struct iwl4965_hw_key *keyinfo = &priv->stations[ctl->key_idx].keyinfo;
2695
2696         switch (keyinfo->alg) {
2697         case ALG_CCMP:
2698                 cmd->cmd.tx.sec_ctl = TX_CMD_SEC_CCM;
2699                 memcpy(cmd->cmd.tx.key, keyinfo->key, keyinfo->keylen);
2700                 IWL_DEBUG_TX("tx_cmd with aes hwcrypto\n");
2701                 break;
2702
2703         case ALG_TKIP:
2704 #if 0
2705                 cmd->cmd.tx.sec_ctl = TX_CMD_SEC_TKIP;
2706
2707                 if (last_frag)
2708                         memcpy(cmd->cmd.tx.tkip_mic.byte, skb_frag->tail - 8,
2709                                8);
2710                 else
2711                         memset(cmd->cmd.tx.tkip_mic.byte, 0, 8);
2712 #endif
2713                 break;
2714
2715         case ALG_WEP:
2716                 cmd->cmd.tx.sec_ctl = TX_CMD_SEC_WEP |
2717                         (ctl->key_idx & TX_CMD_SEC_MSK) << TX_CMD_SEC_SHIFT;
2718
2719                 if (keyinfo->keylen == 13)
2720                         cmd->cmd.tx.sec_ctl |= TX_CMD_SEC_KEY128;
2721
2722                 memcpy(&cmd->cmd.tx.key[3], keyinfo->key, keyinfo->keylen);
2723
2724                 IWL_DEBUG_TX("Configuring packet for WEP encryption "
2725                              "with key %d\n", ctl->key_idx);
2726                 break;
2727
2728         default:
2729                 printk(KERN_ERR "Unknown encode alg %d\n", keyinfo->alg);
2730                 break;
2731         }
2732 }
2733
2734 /*
2735  * handle build REPLY_TX command notification.
2736  */
2737 static void iwl4965_build_tx_cmd_basic(struct iwl4965_priv *priv,
2738                                   struct iwl4965_cmd *cmd,
2739                                   struct ieee80211_tx_control *ctrl,
2740                                   struct ieee80211_hdr *hdr,
2741                                   int is_unicast, u8 std_id)
2742 {
2743         __le16 *qc;
2744         u16 fc = le16_to_cpu(hdr->frame_control);
2745         __le32 tx_flags = cmd->cmd.tx.tx_flags;
2746
2747         cmd->cmd.tx.stop_time.life_time = TX_CMD_LIFE_TIME_INFINITE;
2748         if (!(ctrl->flags & IEEE80211_TXCTL_NO_ACK)) {
2749                 tx_flags |= TX_CMD_FLG_ACK_MSK;
2750                 if ((fc & IEEE80211_FCTL_FTYPE) == IEEE80211_FTYPE_MGMT)
2751                         tx_flags |= TX_CMD_FLG_SEQ_CTL_MSK;
2752                 if (ieee80211_is_probe_response(fc) &&
2753                     !(le16_to_cpu(hdr->seq_ctrl) & 0xf))
2754                         tx_flags |= TX_CMD_FLG_TSF_MSK;
2755         } else {
2756                 tx_flags &= (~TX_CMD_FLG_ACK_MSK);
2757                 tx_flags |= TX_CMD_FLG_SEQ_CTL_MSK;
2758         }
2759
2760         cmd->cmd.tx.sta_id = std_id;
2761         if (ieee80211_get_morefrag(hdr))
2762                 tx_flags |= TX_CMD_FLG_MORE_FRAG_MSK;
2763
2764         qc = ieee80211_get_qos_ctrl(hdr);
2765         if (qc) {
2766                 cmd->cmd.tx.tid_tspec = (u8) (le16_to_cpu(*qc) & 0xf);
2767                 tx_flags &= ~TX_CMD_FLG_SEQ_CTL_MSK;
2768         } else
2769                 tx_flags |= TX_CMD_FLG_SEQ_CTL_MSK;
2770
2771         if (ctrl->flags & IEEE80211_TXCTL_USE_RTS_CTS) {
2772                 tx_flags |= TX_CMD_FLG_RTS_MSK;
2773                 tx_flags &= ~TX_CMD_FLG_CTS_MSK;
2774         } else if (ctrl->flags & IEEE80211_TXCTL_USE_CTS_PROTECT) {
2775                 tx_flags &= ~TX_CMD_FLG_RTS_MSK;
2776                 tx_flags |= TX_CMD_FLG_CTS_MSK;
2777         }
2778
2779         if ((tx_flags & TX_CMD_FLG_RTS_MSK) || (tx_flags & TX_CMD_FLG_CTS_MSK))
2780                 tx_flags |= TX_CMD_FLG_FULL_TXOP_PROT_MSK;
2781
2782         tx_flags &= ~(TX_CMD_FLG_ANT_SEL_MSK);
2783         if ((fc & IEEE80211_FCTL_FTYPE) == IEEE80211_FTYPE_MGMT) {
2784                 if ((fc & IEEE80211_FCTL_STYPE) == IEEE80211_STYPE_ASSOC_REQ ||
2785                     (fc & IEEE80211_FCTL_STYPE) == IEEE80211_STYPE_REASSOC_REQ)
2786                         cmd->cmd.tx.timeout.pm_frame_timeout = cpu_to_le16(3);
2787                 else
2788                         cmd->cmd.tx.timeout.pm_frame_timeout = cpu_to_le16(2);
2789         } else
2790                 cmd->cmd.tx.timeout.pm_frame_timeout = 0;
2791
2792         cmd->cmd.tx.driver_txop = 0;
2793         cmd->cmd.tx.tx_flags = tx_flags;
2794         cmd->cmd.tx.next_frame_len = 0;
2795 }
2796
2797 /**
2798  * iwl4965_get_sta_id - Find station's index within station table
2799  *
2800  * If new IBSS station, create new entry in station table
2801  */
2802 static int iwl4965_get_sta_id(struct iwl4965_priv *priv,
2803                                 struct ieee80211_hdr *hdr)
2804 {
2805         int sta_id;
2806         u16 fc = le16_to_cpu(hdr->frame_control);
2807         DECLARE_MAC_BUF(mac);
2808
2809         /* If this frame is broadcast or management, use broadcast station id */
2810         if (((fc & IEEE80211_FCTL_FTYPE) != IEEE80211_FTYPE_DATA) ||
2811             is_multicast_ether_addr(hdr->addr1))
2812                 return priv->hw_setting.bcast_sta_id;
2813
2814         switch (priv->iw_mode) {
2815
2816         /* If we are a client station in a BSS network, use the special
2817          * AP station entry (that's the only station we communicate with) */
2818         case IEEE80211_IF_TYPE_STA:
2819                 return IWL_AP_ID;
2820
2821         /* If we are an AP, then find the station, or use BCAST */
2822         case IEEE80211_IF_TYPE_AP:
2823                 sta_id = iwl4965_hw_find_station(priv, hdr->addr1);
2824                 if (sta_id != IWL_INVALID_STATION)
2825                         return sta_id;
2826                 return priv->hw_setting.bcast_sta_id;
2827
2828         /* If this frame is going out to an IBSS network, find the station,
2829          * or create a new station table entry */
2830         case IEEE80211_IF_TYPE_IBSS:
2831                 sta_id = iwl4965_hw_find_station(priv, hdr->addr1);
2832                 if (sta_id != IWL_INVALID_STATION)
2833                         return sta_id;
2834
2835                 /* Create new station table entry */
2836                 sta_id = iwl4965_add_station_flags(priv, hdr->addr1, 0, CMD_ASYNC);
2837
2838                 if (sta_id != IWL_INVALID_STATION)
2839                         return sta_id;
2840
2841                 IWL_DEBUG_DROP("Station %s not in station map. "
2842                                "Defaulting to broadcast...\n",
2843                                print_mac(mac, hdr->addr1));
2844                 iwl4965_print_hex_dump(IWL_DL_DROP, (u8 *) hdr, sizeof(*hdr));
2845                 return priv->hw_setting.bcast_sta_id;
2846
2847         default:
2848                 IWL_WARNING("Unknown mode of operation: %d", priv->iw_mode);
2849                 return priv->hw_setting.bcast_sta_id;
2850         }
2851 }
2852
2853 /*
2854  * start REPLY_TX command process
2855  */
2856 static int iwl4965_tx_skb(struct iwl4965_priv *priv,
2857                       struct sk_buff *skb, struct ieee80211_tx_control *ctl)
2858 {
2859         struct ieee80211_hdr *hdr = (struct ieee80211_hdr *)skb->data;
2860         struct iwl4965_tfd_frame *tfd;
2861         u32 *control_flags;
2862         int txq_id = ctl->queue;
2863         struct iwl4965_tx_queue *txq = NULL;
2864         struct iwl4965_queue *q = NULL;
2865         dma_addr_t phys_addr;
2866         dma_addr_t txcmd_phys;
2867         struct iwl4965_cmd *out_cmd = NULL;
2868         u16 len, idx, len_org;
2869         u8 id, hdr_len, unicast;
2870         u8 sta_id;
2871         u16 seq_number = 0;
2872         u16 fc;
2873         __le16 *qc;
2874         u8 wait_write_ptr = 0;
2875         unsigned long flags;
2876         int rc;
2877
2878         spin_lock_irqsave(&priv->lock, flags);
2879         if (iwl4965_is_rfkill(priv)) {
2880                 IWL_DEBUG_DROP("Dropping - RF KILL\n");
2881                 goto drop_unlock;
2882         }
2883
2884         if (!priv->interface_id) {
2885                 IWL_DEBUG_DROP("Dropping - !priv->interface_id\n");
2886                 goto drop_unlock;
2887         }
2888
2889         if ((ctl->tx_rate & 0xFF) == IWL_INVALID_RATE) {
2890                 IWL_ERROR("ERROR: No TX rate available.\n");
2891                 goto drop_unlock;
2892         }
2893
2894         unicast = !is_multicast_ether_addr(hdr->addr1);
2895         id = 0;
2896
2897         fc = le16_to_cpu(hdr->frame_control);
2898
2899 #ifdef CONFIG_IWL4965_DEBUG
2900         if (ieee80211_is_auth(fc))
2901                 IWL_DEBUG_TX("Sending AUTH frame\n");
2902         else if (ieee80211_is_assoc_request(fc))
2903                 IWL_DEBUG_TX("Sending ASSOC frame\n");
2904         else if (ieee80211_is_reassoc_request(fc))
2905                 IWL_DEBUG_TX("Sending REASSOC frame\n");
2906 #endif
2907
2908         if (!iwl4965_is_associated(priv) &&
2909             ((fc & IEEE80211_FCTL_FTYPE) == IEEE80211_FTYPE_DATA)) {
2910                 IWL_DEBUG_DROP("Dropping - !iwl4965_is_associated\n");
2911                 goto drop_unlock;
2912         }
2913
2914         spin_unlock_irqrestore(&priv->lock, flags);
2915
2916         hdr_len = ieee80211_get_hdrlen(fc);
2917
2918         /* Find (or create) index into station table for destination station */
2919         sta_id = iwl4965_get_sta_id(priv, hdr);
2920         if (sta_id == IWL_INVALID_STATION) {
2921                 DECLARE_MAC_BUF(mac);
2922
2923                 IWL_DEBUG_DROP("Dropping - INVALID STATION: %s\n",
2924                                print_mac(mac, hdr->addr1));
2925                 goto drop;
2926         }
2927
2928         IWL_DEBUG_RATE("station Id %d\n", sta_id);
2929
2930         qc = ieee80211_get_qos_ctrl(hdr);
2931         if (qc) {
2932                 u8 tid = (u8)(le16_to_cpu(*qc) & 0xf);
2933                 seq_number = priv->stations[sta_id].tid[tid].seq_number &
2934                                 IEEE80211_SCTL_SEQ;
2935                 hdr->seq_ctrl = cpu_to_le16(seq_number) |
2936                         (hdr->seq_ctrl &
2937                                 __constant_cpu_to_le16(IEEE80211_SCTL_FRAG));
2938                 seq_number += 0x10;
2939 #ifdef CONFIG_IWL4965_HT
2940 #ifdef CONFIG_IWL4965_HT_AGG
2941                 /* aggregation is on for this <sta,tid> */
2942                 if (ctl->flags & IEEE80211_TXCTL_HT_MPDU_AGG)
2943                         txq_id = priv->stations[sta_id].tid[tid].agg.txq_id;
2944 #endif /* CONFIG_IWL4965_HT_AGG */
2945 #endif /* CONFIG_IWL4965_HT */
2946         }
2947
2948         /* Descriptor for chosen Tx queue */
2949         txq = &priv->txq[txq_id];
2950         q = &txq->q;
2951
2952         spin_lock_irqsave(&priv->lock, flags);
2953
2954         /* Set up first empty TFD within this queue's circular TFD buffer */
2955         tfd = &txq->bd[q->write_ptr];
2956         memset(tfd, 0, sizeof(*tfd));
2957         control_flags = (u32 *) tfd;
2958         idx = get_cmd_index(q, q->write_ptr, 0);
2959
2960         /* Set up driver data for this TFD */
2961         memset(&(txq->txb[q->write_ptr]), 0, sizeof(struct iwl4965_tx_info));
2962         txq->txb[q->write_ptr].skb[0] = skb;
2963         memcpy(&(txq->txb[q->write_ptr].status.control),
2964                ctl, sizeof(struct ieee80211_tx_control));
2965
2966         /* Set up first empty entry in queue's array of Tx/cmd buffers */
2967         out_cmd = &txq->cmd[idx];
2968         memset(&out_cmd->hdr, 0, sizeof(out_cmd->hdr));
2969         memset(&out_cmd->cmd.tx, 0, sizeof(out_cmd->cmd.tx));
2970
2971         /*
2972          * Set up the Tx-command (not MAC!) header.
2973          * Store the chosen Tx queue and TFD index within the sequence field;
2974          * after Tx, uCode's Tx response will return this value so driver can
2975          * locate the frame within the tx queue and do post-tx processing.
2976          */
2977         out_cmd->hdr.cmd = REPLY_TX;
2978         out_cmd->hdr.sequence = cpu_to_le16((u16)(QUEUE_TO_SEQ(txq_id) |
2979                                 INDEX_TO_SEQ(q->write_ptr)));
2980
2981         /* Copy MAC header from skb into command buffer */
2982         memcpy(out_cmd->cmd.tx.hdr, hdr, hdr_len);
2983
2984         /*
2985          * Use the first empty entry in this queue's command buffer array
2986          * to contain the Tx command and MAC header concatenated together
2987          * (payload data will be in another buffer).
2988          * Size of this varies, due to varying MAC header length.
2989          * If end is not dword aligned, we'll have 2 extra bytes at the end
2990          * of the MAC header (device reads on dword boundaries).
2991          * We'll tell device about this padding later.
2992          */
2993         len = priv->hw_setting.tx_cmd_len +
2994                 sizeof(struct iwl4965_cmd_header) + hdr_len;
2995
2996         len_org = len;
2997         len = (len + 3) & ~3;
2998
2999         if (len_org != len)
3000                 len_org = 1;
3001         else
3002                 len_org = 0;
3003
3004         /* Physical address of this Tx command's header (not MAC header!),
3005          * within command buffer array. */
3006         txcmd_phys = txq->dma_addr_cmd + sizeof(struct iwl4965_cmd) * idx +
3007                      offsetof(struct iwl4965_cmd, hdr);
3008
3009         /* Add buffer containing Tx command and MAC(!) header to TFD's
3010          * first entry */
3011         iwl4965_hw_txq_attach_buf_to_tfd(priv, tfd, txcmd_phys, len);
3012
3013         if (!(ctl->flags & IEEE80211_TXCTL_DO_NOT_ENCRYPT))
3014                 iwl4965_build_tx_cmd_hwcrypto(priv, ctl, out_cmd, skb, 0);
3015
3016         /* Set up TFD's 2nd entry to point directly to remainder of skb,
3017          * if any (802.11 null frames have no payload). */
3018         len = skb->len - hdr_len;
3019         if (len) {
3020                 phys_addr = pci_map_single(priv->pci_dev, skb->data + hdr_len,
3021                                            len, PCI_DMA_TODEVICE);
3022                 iwl4965_hw_txq_attach_buf_to_tfd(priv, tfd, phys_addr, len);
3023         }
3024
3025         /* Tell 4965 about any 2-byte padding after MAC header */
3026         if (len_org)
3027                 out_cmd->cmd.tx.tx_flags |= TX_CMD_FLG_MH_PAD_MSK;
3028
3029         /* Total # bytes to be transmitted */
3030         len = (u16)skb->len;
3031         out_cmd->cmd.tx.len = cpu_to_le16(len);
3032
3033         /* TODO need this for burst mode later on */
3034         iwl4965_build_tx_cmd_basic(priv, out_cmd, ctl, hdr, unicast, sta_id);
3035
3036         /* set is_hcca to 0; it probably will never be implemented */
3037         iwl4965_hw_build_tx_cmd_rate(priv, out_cmd, ctl, hdr, sta_id, 0);
3038
3039         iwl4965_tx_cmd(priv, out_cmd, sta_id, txcmd_phys,
3040                        hdr, hdr_len, ctl, NULL);
3041
3042         if (!ieee80211_get_morefrag(hdr)) {
3043                 txq->need_update = 1;
3044                 if (qc) {
3045                         u8 tid = (u8)(le16_to_cpu(*qc) & 0xf);
3046                         priv->stations[sta_id].tid[tid].seq_number = seq_number;
3047                 }
3048         } else {
3049                 wait_write_ptr = 1;
3050                 txq->need_update = 0;
3051         }
3052
3053         iwl4965_print_hex_dump(IWL_DL_TX, out_cmd->cmd.payload,
3054                            sizeof(out_cmd->cmd.tx));
3055
3056         iwl4965_print_hex_dump(IWL_DL_TX, (u8 *)out_cmd->cmd.tx.hdr,
3057                            ieee80211_get_hdrlen(fc));
3058
3059         /* Set up entry for this TFD in Tx byte-count array */
3060         iwl4965_tx_queue_update_wr_ptr(priv, txq, len);
3061
3062         /* Tell device the write index *just past* this latest filled TFD */
3063         q->write_ptr = iwl4965_queue_inc_wrap(q->write_ptr, q->n_bd);
3064         rc = iwl4965_tx_queue_update_write_ptr(priv, txq);
3065         spin_unlock_irqrestore(&priv->lock, flags);
3066
3067         if (rc)
3068                 return rc;
3069
3070         if ((iwl4965_queue_space(q) < q->high_mark)
3071             && priv->mac80211_registered) {
3072                 if (wait_write_ptr) {
3073                         spin_lock_irqsave(&priv->lock, flags);
3074                         txq->need_update = 1;
3075                         iwl4965_tx_queue_update_write_ptr(priv, txq);
3076                         spin_unlock_irqrestore(&priv->lock, flags);
3077                 }
3078
3079                 ieee80211_stop_queue(priv->hw, ctl->queue);
3080         }
3081
3082         return 0;
3083
3084 drop_unlock:
3085         spin_unlock_irqrestore(&priv->lock, flags);
3086 drop:
3087         return -1;
3088 }
3089
3090 static void iwl4965_set_rate(struct iwl4965_priv *priv)
3091 {
3092         const struct ieee80211_hw_mode *hw = NULL;
3093         struct ieee80211_rate *rate;
3094         int i;
3095
3096         hw = iwl4965_get_hw_mode(priv, priv->phymode);
3097         if (!hw) {
3098                 IWL_ERROR("Failed to set rate: unable to get hw mode\n");
3099                 return;
3100         }
3101
3102         priv->active_rate = 0;
3103         priv->active_rate_basic = 0;
3104
3105         IWL_DEBUG_RATE("Setting rates for 802.11%c\n",
3106                        hw->mode == MODE_IEEE80211A ?
3107                        'a' : ((hw->mode == MODE_IEEE80211B) ? 'b' : 'g'));
3108
3109         for (i = 0; i < hw->num_rates; i++) {
3110                 rate = &(hw->rates[i]);
3111                 if ((rate->val < IWL_RATE_COUNT) &&
3112                     (rate->flags & IEEE80211_RATE_SUPPORTED)) {
3113                         IWL_DEBUG_RATE("Adding rate index %d (plcp %d)%s\n",
3114                                        rate->val, iwl4965_rates[rate->val].plcp,
3115                                        (rate->flags & IEEE80211_RATE_BASIC) ?
3116                                        "*" : "");
3117                         priv->active_rate |= (1 << rate->val);
3118                         if (rate->flags & IEEE80211_RATE_BASIC)
3119                                 priv->active_rate_basic |= (1 << rate->val);
3120                 } else
3121                         IWL_DEBUG_RATE("Not adding rate %d (plcp %d)\n",
3122                                        rate->val, iwl4965_rates[rate->val].plcp);
3123         }
3124
3125         IWL_DEBUG_RATE("Set active_rate = %0x, active_rate_basic = %0x\n",
3126                        priv->active_rate, priv->active_rate_basic);
3127
3128         /*
3129          * If a basic rate is configured, then use it (adding IWL_RATE_1M_MASK)
3130          * otherwise set it to the default of all CCK rates and 6, 12, 24 for
3131          * OFDM
3132          */
3133         if (priv->active_rate_basic & IWL_CCK_BASIC_RATES_MASK)