11ef1c0c5d0de6de58020aa1fd781ca0c65f745d
[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 /*
31  * NOTE:  This file (iwl-base.c) is used to build to multiple hardware targets
32  * by defining IWL to either 3945 or 4965.  The Makefile used when building
33  * the base targets will create base-3945.o and base-4965.o
34  *
35  * The eventual goal is to move as many of the #if IWL / #endif blocks out of
36  * this file and into the hardware specific implementation files (iwl-XXXX.c)
37  * and leave only the common (non #ifdef sprinkled) code in this file
38  */
39
40 #include <linux/kernel.h>
41 #include <linux/module.h>
42 #include <linux/version.h>
43 #include <linux/init.h>
44 #include <linux/pci.h>
45 #include <linux/dma-mapping.h>
46 #include <linux/delay.h>
47 #include <linux/skbuff.h>
48 #include <linux/netdevice.h>
49 #include <linux/wireless.h>
50 #include <linux/firmware.h>
51 #include <linux/etherdevice.h>
52 #include <linux/if_arp.h>
53
54 #include <net/ieee80211_radiotap.h>
55 #include <net/mac80211.h>
56
57 #include <asm/div64.h>
58
59 #include "iwl-4965.h"
60 #include "iwl-helpers.h"
61
62 #ifdef CONFIG_IWL4965_DEBUG
63 u32 iwl4965_debug_level;
64 #endif
65
66 static int iwl4965_tx_queue_update_write_ptr(struct iwl4965_priv *priv,
67                                   struct iwl4965_tx_queue *txq);
68
69 /******************************************************************************
70  *
71  * module boiler plate
72  *
73  ******************************************************************************/
74
75 /* module parameters */
76 static int iwl4965_param_disable_hw_scan;
77 static int iwl4965_param_debug;
78 static int iwl4965_param_disable;      /* def: enable radio */
79 static int iwl4965_param_antenna;      /* def: 0 = both antennas (use diversity) */
80 int iwl4965_param_hwcrypto;     /* def: using software encryption */
81 static int iwl4965_param_qos_enable = 1;
82 int iwl4965_param_queues_num = IWL_MAX_NUM_QUEUES;
83
84 /*
85  * module name, copyright, version, etc.
86  * NOTE: DRV_NAME is defined in iwlwifi.h for use by iwl-debug.h and printk
87  */
88
89 #define DRV_DESCRIPTION "Intel(R) Wireless WiFi Link 4965AGN driver for Linux"
90
91 #ifdef CONFIG_IWL4965_DEBUG
92 #define VD "d"
93 #else
94 #define VD
95 #endif
96
97 #ifdef CONFIG_IWL4965_SPECTRUM_MEASUREMENT
98 #define VS "s"
99 #else
100 #define VS
101 #endif
102
103 #define IWLWIFI_VERSION "1.1.19k" VD VS
104 #define DRV_COPYRIGHT   "Copyright(c) 2003-2007 Intel Corporation"
105 #define DRV_VERSION     IWLWIFI_VERSION
106
107 /* Change firmware file name, using "-" and incrementing number,
108  *   *only* when uCode interface or architecture changes so that it
109  *   is not compatible with earlier drivers.
110  * This number will also appear in << 8 position of 1st dword of uCode file */
111 #define IWL4965_UCODE_API "-1"
112
113 MODULE_DESCRIPTION(DRV_DESCRIPTION);
114 MODULE_VERSION(DRV_VERSION);
115 MODULE_AUTHOR(DRV_COPYRIGHT);
116 MODULE_LICENSE("GPL");
117
118 __le16 *ieee80211_get_qos_ctrl(struct ieee80211_hdr *hdr)
119 {
120         u16 fc = le16_to_cpu(hdr->frame_control);
121         int hdr_len = ieee80211_get_hdrlen(fc);
122
123         if ((fc & 0x00cc) == (IEEE80211_STYPE_QOS_DATA | IEEE80211_FTYPE_DATA))
124                 return (__le16 *) ((u8 *) hdr + hdr_len - QOS_CONTROL_LEN);
125         return NULL;
126 }
127
128 static const struct ieee80211_hw_mode *iwl4965_get_hw_mode(
129                 struct iwl4965_priv *priv, int mode)
130 {
131         int i;
132
133         for (i = 0; i < 3; i++)
134                 if (priv->modes[i].mode == mode)
135                         return &priv->modes[i];
136
137         return NULL;
138 }
139
140 static int iwl4965_is_empty_essid(const char *essid, int essid_len)
141 {
142         /* Single white space is for Linksys APs */
143         if (essid_len == 1 && essid[0] == ' ')
144                 return 1;
145
146         /* Otherwise, if the entire essid is 0, we assume it is hidden */
147         while (essid_len) {
148                 essid_len--;
149                 if (essid[essid_len] != '\0')
150                         return 0;
151         }
152
153         return 1;
154 }
155
156 static const char *iwl4965_escape_essid(const char *essid, u8 essid_len)
157 {
158         static char escaped[IW_ESSID_MAX_SIZE * 2 + 1];
159         const char *s = essid;
160         char *d = escaped;
161
162         if (iwl4965_is_empty_essid(essid, essid_len)) {
163                 memcpy(escaped, "<hidden>", sizeof("<hidden>"));
164                 return escaped;
165         }
166
167         essid_len = min(essid_len, (u8) IW_ESSID_MAX_SIZE);
168         while (essid_len--) {
169                 if (*s == '\0') {
170                         *d++ = '\\';
171                         *d++ = '0';
172                         s++;
173                 } else
174                         *d++ = *s++;
175         }
176         *d = '\0';
177         return escaped;
178 }
179
180 static void iwl4965_print_hex_dump(int level, void *p, u32 len)
181 {
182 #ifdef CONFIG_IWL4965_DEBUG
183         if (!(iwl4965_debug_level & level))
184                 return;
185
186         print_hex_dump(KERN_DEBUG, "iwl data: ", DUMP_PREFIX_OFFSET, 16, 1,
187                         p, len, 1);
188 #endif
189 }
190
191 /*************** DMA-QUEUE-GENERAL-FUNCTIONS  *****
192  * DMA services
193  *
194  * Theory of operation
195  *
196  * A queue is a circular buffers with 'Read' and 'Write' pointers.
197  * 2 empty entries always kept in the buffer to protect from overflow.
198  *
199  * For Tx queue, there are low mark and high mark limits. If, after queuing
200  * the packet for Tx, free space become < low mark, Tx queue stopped. When
201  * reclaiming packets (on 'tx done IRQ), if free space become > high mark,
202  * Tx queue resumed.
203  *
204  * The IWL operates with six queues, one receive queue in the device's
205  * sram, one transmit queue for sending commands to the device firmware,
206  * and four transmit queues for data.
207  ***************************************************/
208
209 static int iwl4965_queue_space(const struct iwl4965_queue *q)
210 {
211         int s = q->read_ptr - q->write_ptr;
212
213         if (q->read_ptr > q->write_ptr)
214                 s -= q->n_bd;
215
216         if (s <= 0)
217                 s += q->n_window;
218         /* keep some reserve to not confuse empty and full situations */
219         s -= 2;
220         if (s < 0)
221                 s = 0;
222         return s;
223 }
224
225 /* XXX: n_bd must be power-of-two size */
226 static inline int iwl4965_queue_inc_wrap(int index, int n_bd)
227 {
228         return ++index & (n_bd - 1);
229 }
230
231 /* XXX: n_bd must be power-of-two size */
232 static inline int iwl4965_queue_dec_wrap(int index, int n_bd)
233 {
234         return --index & (n_bd - 1);
235 }
236
237 static inline int x2_queue_used(const struct iwl4965_queue *q, int i)
238 {
239         return q->write_ptr > q->read_ptr ?
240                 (i >= q->read_ptr && i < q->write_ptr) :
241                 !(i < q->read_ptr && i >= q->write_ptr);
242 }
243
244 static inline u8 get_cmd_index(struct iwl4965_queue *q, u32 index, int is_huge)
245 {
246         if (is_huge)
247                 return q->n_window;
248
249         return index & (q->n_window - 1);
250 }
251
252 static int iwl4965_queue_init(struct iwl4965_priv *priv, struct iwl4965_queue *q,
253                           int count, int slots_num, u32 id)
254 {
255         q->n_bd = count;
256         q->n_window = slots_num;
257         q->id = id;
258
259         /* count must be power-of-two size, otherwise iwl4965_queue_inc_wrap
260          * and iwl4965_queue_dec_wrap are broken. */
261         BUG_ON(!is_power_of_2(count));
262
263         /* slots_num must be power-of-two size, otherwise
264          * get_cmd_index is broken. */
265         BUG_ON(!is_power_of_2(slots_num));
266
267         q->low_mark = q->n_window / 4;
268         if (q->low_mark < 4)
269                 q->low_mark = 4;
270
271         q->high_mark = q->n_window / 8;
272         if (q->high_mark < 2)
273                 q->high_mark = 2;
274
275         q->write_ptr = q->read_ptr = 0;
276
277         return 0;
278 }
279
280 static int iwl4965_tx_queue_alloc(struct iwl4965_priv *priv,
281                               struct iwl4965_tx_queue *txq, u32 id)
282 {
283         struct pci_dev *dev = priv->pci_dev;
284
285         if (id != IWL_CMD_QUEUE_NUM) {
286                 txq->txb = kmalloc(sizeof(txq->txb[0]) *
287                                    TFD_QUEUE_SIZE_MAX, GFP_KERNEL);
288                 if (!txq->txb) {
289                         IWL_ERROR("kmalloc for auxiliary BD "
290                                   "structures failed\n");
291                         goto error;
292                 }
293         } else
294                 txq->txb = NULL;
295
296         txq->bd = pci_alloc_consistent(dev,
297                         sizeof(txq->bd[0]) * TFD_QUEUE_SIZE_MAX,
298                         &txq->q.dma_addr);
299
300         if (!txq->bd) {
301                 IWL_ERROR("pci_alloc_consistent(%zd) failed\n",
302                           sizeof(txq->bd[0]) * TFD_QUEUE_SIZE_MAX);
303                 goto error;
304         }
305         txq->q.id = id;
306
307         return 0;
308
309  error:
310         if (txq->txb) {
311                 kfree(txq->txb);
312                 txq->txb = NULL;
313         }
314
315         return -ENOMEM;
316 }
317
318 int iwl4965_tx_queue_init(struct iwl4965_priv *priv,
319                       struct iwl4965_tx_queue *txq, int slots_num, u32 txq_id)
320 {
321         struct pci_dev *dev = priv->pci_dev;
322         int len;
323         int rc = 0;
324
325         /* allocate command space + one big command for scan since scan
326          * command is very huge the system will not have two scan at the
327          * same time */
328         len = sizeof(struct iwl4965_cmd) * slots_num;
329         if (txq_id == IWL_CMD_QUEUE_NUM)
330                 len +=  IWL_MAX_SCAN_SIZE;
331         txq->cmd = pci_alloc_consistent(dev, len, &txq->dma_addr_cmd);
332         if (!txq->cmd)
333                 return -ENOMEM;
334
335         rc = iwl4965_tx_queue_alloc(priv, txq, txq_id);
336         if (rc) {
337                 pci_free_consistent(dev, len, txq->cmd, txq->dma_addr_cmd);
338
339                 return -ENOMEM;
340         }
341         txq->need_update = 0;
342
343         /* TFD_QUEUE_SIZE_MAX must be power-of-two size, otherwise
344          * iwl4965_queue_inc_wrap and iwl4965_queue_dec_wrap are broken. */
345         BUILD_BUG_ON(TFD_QUEUE_SIZE_MAX & (TFD_QUEUE_SIZE_MAX - 1));
346         iwl4965_queue_init(priv, &txq->q, TFD_QUEUE_SIZE_MAX, slots_num, txq_id);
347
348         iwl4965_hw_tx_queue_init(priv, txq);
349
350         return 0;
351 }
352
353 /**
354  * iwl4965_tx_queue_free - Deallocate DMA queue.
355  * @txq: Transmit queue to deallocate.
356  *
357  * Empty queue by removing and destroying all BD's.
358  * Free all buffers.  txq itself is not freed.
359  *
360  */
361 void iwl4965_tx_queue_free(struct iwl4965_priv *priv, struct iwl4965_tx_queue *txq)
362 {
363         struct iwl4965_queue *q = &txq->q;
364         struct pci_dev *dev = priv->pci_dev;
365         int len;
366
367         if (q->n_bd == 0)
368                 return;
369
370         /* first, empty all BD's */
371         for (; q->write_ptr != q->read_ptr;
372              q->read_ptr = iwl4965_queue_inc_wrap(q->read_ptr, q->n_bd))
373                 iwl4965_hw_txq_free_tfd(priv, txq);
374
375         len = sizeof(struct iwl4965_cmd) * q->n_window;
376         if (q->id == IWL_CMD_QUEUE_NUM)
377                 len += IWL_MAX_SCAN_SIZE;
378
379         pci_free_consistent(dev, len, txq->cmd, txq->dma_addr_cmd);
380
381         /* free buffers belonging to queue itself */
382         if (txq->q.n_bd)
383                 pci_free_consistent(dev, sizeof(struct iwl4965_tfd_frame) *
384                                     txq->q.n_bd, txq->bd, txq->q.dma_addr);
385
386         if (txq->txb) {
387                 kfree(txq->txb);
388                 txq->txb = NULL;
389         }
390
391         /* 0 fill whole structure */
392         memset(txq, 0, sizeof(*txq));
393 }
394
395 const u8 iwl4965_broadcast_addr[ETH_ALEN] = { 0xFF, 0xFF, 0xFF, 0xFF, 0xFF, 0xFF };
396
397 /*************** STATION TABLE MANAGEMENT ****
398  *
399  * NOTE:  This needs to be overhauled to better synchronize between
400  * how the iwl-4965.c is using iwl4965_hw_find_station vs. iwl-3945.c
401  *
402  * mac80211 should also be examined to determine if sta_info is duplicating
403  * the functionality provided here
404  */
405
406 /**************************************************************/
407
408 #if 0 /* temporary disable till we add real remove station */
409 static u8 iwl4965_remove_station(struct iwl4965_priv *priv, const u8 *addr, int is_ap)
410 {
411         int index = IWL_INVALID_STATION;
412         int i;
413         unsigned long flags;
414
415         spin_lock_irqsave(&priv->sta_lock, flags);
416
417         if (is_ap)
418                 index = IWL_AP_ID;
419         else if (is_broadcast_ether_addr(addr))
420                 index = priv->hw_setting.bcast_sta_id;
421         else
422                 for (i = IWL_STA_ID; i < priv->hw_setting.max_stations; i++)
423                         if (priv->stations[i].used &&
424                             !compare_ether_addr(priv->stations[i].sta.sta.addr,
425                                                 addr)) {
426                                 index = i;
427                                 break;
428                         }
429
430         if (unlikely(index == IWL_INVALID_STATION))
431                 goto out;
432
433         if (priv->stations[index].used) {
434                 priv->stations[index].used = 0;
435                 priv->num_stations--;
436         }
437
438         BUG_ON(priv->num_stations < 0);
439
440 out:
441         spin_unlock_irqrestore(&priv->sta_lock, flags);
442         return 0;
443 }
444 #endif
445
446 static void iwl4965_clear_stations_table(struct iwl4965_priv *priv)
447 {
448         unsigned long flags;
449
450         spin_lock_irqsave(&priv->sta_lock, flags);
451
452         priv->num_stations = 0;
453         memset(priv->stations, 0, sizeof(priv->stations));
454
455         spin_unlock_irqrestore(&priv->sta_lock, flags);
456 }
457
458 u8 iwl4965_add_station_flags(struct iwl4965_priv *priv, const u8 *addr, int is_ap, u8 flags)
459 {
460         int i;
461         int index = IWL_INVALID_STATION;
462         struct iwl4965_station_entry *station;
463         unsigned long flags_spin;
464         DECLARE_MAC_BUF(mac);
465
466         spin_lock_irqsave(&priv->sta_lock, flags_spin);
467         if (is_ap)
468                 index = IWL_AP_ID;
469         else if (is_broadcast_ether_addr(addr))
470                 index = priv->hw_setting.bcast_sta_id;
471         else
472                 for (i = IWL_STA_ID; i < priv->hw_setting.max_stations; i++) {
473                         if (!compare_ether_addr(priv->stations[i].sta.sta.addr,
474                                                 addr)) {
475                                 index = i;
476                                 break;
477                         }
478
479                         if (!priv->stations[i].used &&
480                             index == IWL_INVALID_STATION)
481                                 index = i;
482                 }
483
484
485         /* These two conditions has the same outcome but keep them separate
486           since they have different meaning */
487         if (unlikely(index == IWL_INVALID_STATION)) {
488                 spin_unlock_irqrestore(&priv->sta_lock, flags_spin);
489                 return index;
490         }
491
492         if (priv->stations[index].used &&
493             !compare_ether_addr(priv->stations[index].sta.sta.addr, addr)) {
494                 spin_unlock_irqrestore(&priv->sta_lock, flags_spin);
495                 return index;
496         }
497
498
499         IWL_DEBUG_ASSOC("Add STA ID %d: %s\n", index, print_mac(mac, addr));
500         station = &priv->stations[index];
501         station->used = 1;
502         priv->num_stations++;
503
504         memset(&station->sta, 0, sizeof(struct iwl4965_addsta_cmd));
505         memcpy(station->sta.sta.addr, addr, ETH_ALEN);
506         station->sta.mode = 0;
507         station->sta.sta.sta_id = index;
508         station->sta.station_flags = 0;
509
510 #ifdef CONFIG_IWL4965_HT
511         /* BCAST station and IBSS stations do not work in HT mode */
512         if (index != priv->hw_setting.bcast_sta_id &&
513             priv->iw_mode != IEEE80211_IF_TYPE_IBSS)
514                 iwl4965_set_ht_add_station(priv, index);
515 #endif /*CONFIG_IWL4965_HT*/
516
517         spin_unlock_irqrestore(&priv->sta_lock, flags_spin);
518         iwl4965_send_add_station(priv, &station->sta, flags);
519         return index;
520
521 }
522
523 /*************** DRIVER STATUS FUNCTIONS   *****/
524
525 static inline int iwl4965_is_ready(struct iwl4965_priv *priv)
526 {
527         /* The adapter is 'ready' if READY and GEO_CONFIGURED bits are
528          * set but EXIT_PENDING is not */
529         return test_bit(STATUS_READY, &priv->status) &&
530                test_bit(STATUS_GEO_CONFIGURED, &priv->status) &&
531                !test_bit(STATUS_EXIT_PENDING, &priv->status);
532 }
533
534 static inline int iwl4965_is_alive(struct iwl4965_priv *priv)
535 {
536         return test_bit(STATUS_ALIVE, &priv->status);
537 }
538
539 static inline int iwl4965_is_init(struct iwl4965_priv *priv)
540 {
541         return test_bit(STATUS_INIT, &priv->status);
542 }
543
544 static inline int iwl4965_is_rfkill(struct iwl4965_priv *priv)
545 {
546         return test_bit(STATUS_RF_KILL_HW, &priv->status) ||
547                test_bit(STATUS_RF_KILL_SW, &priv->status);
548 }
549
550 static inline int iwl4965_is_ready_rf(struct iwl4965_priv *priv)
551 {
552
553         if (iwl4965_is_rfkill(priv))
554                 return 0;
555
556         return iwl4965_is_ready(priv);
557 }
558
559 /*************** HOST COMMAND QUEUE FUNCTIONS   *****/
560
561 #define IWL_CMD(x) case x : return #x
562
563 static const char *get_cmd_string(u8 cmd)
564 {
565         switch (cmd) {
566                 IWL_CMD(REPLY_ALIVE);
567                 IWL_CMD(REPLY_ERROR);
568                 IWL_CMD(REPLY_RXON);
569                 IWL_CMD(REPLY_RXON_ASSOC);
570                 IWL_CMD(REPLY_QOS_PARAM);
571                 IWL_CMD(REPLY_RXON_TIMING);
572                 IWL_CMD(REPLY_ADD_STA);
573                 IWL_CMD(REPLY_REMOVE_STA);
574                 IWL_CMD(REPLY_REMOVE_ALL_STA);
575                 IWL_CMD(REPLY_TX);
576                 IWL_CMD(REPLY_RATE_SCALE);
577                 IWL_CMD(REPLY_LEDS_CMD);
578                 IWL_CMD(REPLY_TX_LINK_QUALITY_CMD);
579                 IWL_CMD(RADAR_NOTIFICATION);
580                 IWL_CMD(REPLY_QUIET_CMD);
581                 IWL_CMD(REPLY_CHANNEL_SWITCH);
582                 IWL_CMD(CHANNEL_SWITCH_NOTIFICATION);
583                 IWL_CMD(REPLY_SPECTRUM_MEASUREMENT_CMD);
584                 IWL_CMD(SPECTRUM_MEASURE_NOTIFICATION);
585                 IWL_CMD(POWER_TABLE_CMD);
586                 IWL_CMD(PM_SLEEP_NOTIFICATION);
587                 IWL_CMD(PM_DEBUG_STATISTIC_NOTIFIC);
588                 IWL_CMD(REPLY_SCAN_CMD);
589                 IWL_CMD(REPLY_SCAN_ABORT_CMD);
590                 IWL_CMD(SCAN_START_NOTIFICATION);
591                 IWL_CMD(SCAN_RESULTS_NOTIFICATION);
592                 IWL_CMD(SCAN_COMPLETE_NOTIFICATION);
593                 IWL_CMD(BEACON_NOTIFICATION);
594                 IWL_CMD(REPLY_TX_BEACON);
595                 IWL_CMD(WHO_IS_AWAKE_NOTIFICATION);
596                 IWL_CMD(QUIET_NOTIFICATION);
597                 IWL_CMD(REPLY_TX_PWR_TABLE_CMD);
598                 IWL_CMD(MEASURE_ABORT_NOTIFICATION);
599                 IWL_CMD(REPLY_BT_CONFIG);
600                 IWL_CMD(REPLY_STATISTICS_CMD);
601                 IWL_CMD(STATISTICS_NOTIFICATION);
602                 IWL_CMD(REPLY_CARD_STATE_CMD);
603                 IWL_CMD(CARD_STATE_NOTIFICATION);
604                 IWL_CMD(MISSED_BEACONS_NOTIFICATION);
605                 IWL_CMD(REPLY_CT_KILL_CONFIG_CMD);
606                 IWL_CMD(SENSITIVITY_CMD);
607                 IWL_CMD(REPLY_PHY_CALIBRATION_CMD);
608                 IWL_CMD(REPLY_RX_PHY_CMD);
609                 IWL_CMD(REPLY_RX_MPDU_CMD);
610                 IWL_CMD(REPLY_4965_RX);
611                 IWL_CMD(REPLY_COMPRESSED_BA);
612         default:
613                 return "UNKNOWN";
614
615         }
616 }
617
618 #define HOST_COMPLETE_TIMEOUT (HZ / 2)
619
620 /**
621  * iwl4965_enqueue_hcmd - enqueue a uCode command
622  * @priv: device private data point
623  * @cmd: a point to the ucode command structure
624  *
625  * The function returns < 0 values to indicate the operation is
626  * failed. On success, it turns the index (> 0) of command in the
627  * command queue.
628  */
629 static int iwl4965_enqueue_hcmd(struct iwl4965_priv *priv, struct iwl4965_host_cmd *cmd)
630 {
631         struct iwl4965_tx_queue *txq = &priv->txq[IWL_CMD_QUEUE_NUM];
632         struct iwl4965_queue *q = &txq->q;
633         struct iwl4965_tfd_frame *tfd;
634         u32 *control_flags;
635         struct iwl4965_cmd *out_cmd;
636         u32 idx;
637         u16 fix_size = (u16)(cmd->len + sizeof(out_cmd->hdr));
638         dma_addr_t phys_addr;
639         int ret;
640         unsigned long flags;
641
642         /* If any of the command structures end up being larger than
643          * the TFD_MAX_PAYLOAD_SIZE, and it sent as a 'small' command then
644          * we will need to increase the size of the TFD entries */
645         BUG_ON((fix_size > TFD_MAX_PAYLOAD_SIZE) &&
646                !(cmd->meta.flags & CMD_SIZE_HUGE));
647
648         if (iwl4965_queue_space(q) < ((cmd->meta.flags & CMD_ASYNC) ? 2 : 1)) {
649                 IWL_ERROR("No space for Tx\n");
650                 return -ENOSPC;
651         }
652
653         spin_lock_irqsave(&priv->hcmd_lock, flags);
654
655         tfd = &txq->bd[q->write_ptr];
656         memset(tfd, 0, sizeof(*tfd));
657
658         control_flags = (u32 *) tfd;
659
660         idx = get_cmd_index(q, q->write_ptr, cmd->meta.flags & CMD_SIZE_HUGE);
661         out_cmd = &txq->cmd[idx];
662
663         out_cmd->hdr.cmd = cmd->id;
664         memcpy(&out_cmd->meta, &cmd->meta, sizeof(cmd->meta));
665         memcpy(&out_cmd->cmd.payload, cmd->data, cmd->len);
666
667         /* At this point, the out_cmd now has all of the incoming cmd
668          * information */
669
670         out_cmd->hdr.flags = 0;
671         out_cmd->hdr.sequence = cpu_to_le16(QUEUE_TO_SEQ(IWL_CMD_QUEUE_NUM) |
672                         INDEX_TO_SEQ(q->write_ptr));
673         if (out_cmd->meta.flags & CMD_SIZE_HUGE)
674                 out_cmd->hdr.sequence |= cpu_to_le16(SEQ_HUGE_FRAME);
675
676         phys_addr = txq->dma_addr_cmd + sizeof(txq->cmd[0]) * idx +
677                         offsetof(struct iwl4965_cmd, hdr);
678         iwl4965_hw_txq_attach_buf_to_tfd(priv, tfd, phys_addr, fix_size);
679
680         IWL_DEBUG_HC("Sending command %s (#%x), seq: 0x%04X, "
681                      "%d bytes at %d[%d]:%d\n",
682                      get_cmd_string(out_cmd->hdr.cmd),
683                      out_cmd->hdr.cmd, le16_to_cpu(out_cmd->hdr.sequence),
684                      fix_size, q->write_ptr, idx, IWL_CMD_QUEUE_NUM);
685
686         txq->need_update = 1;
687         ret = iwl4965_tx_queue_update_wr_ptr(priv, txq, 0);
688         q->write_ptr = iwl4965_queue_inc_wrap(q->write_ptr, q->n_bd);
689         iwl4965_tx_queue_update_write_ptr(priv, txq);
690
691         spin_unlock_irqrestore(&priv->hcmd_lock, flags);
692         return ret ? ret : idx;
693 }
694
695 static int iwl4965_send_cmd_async(struct iwl4965_priv *priv, struct iwl4965_host_cmd *cmd)
696 {
697         int ret;
698
699         BUG_ON(!(cmd->meta.flags & CMD_ASYNC));
700
701         /* An asynchronous command can not expect an SKB to be set. */
702         BUG_ON(cmd->meta.flags & CMD_WANT_SKB);
703
704         /* An asynchronous command MUST have a callback. */
705         BUG_ON(!cmd->meta.u.callback);
706
707         if (test_bit(STATUS_EXIT_PENDING, &priv->status))
708                 return -EBUSY;
709
710         ret = iwl4965_enqueue_hcmd(priv, cmd);
711         if (ret < 0) {
712                 IWL_ERROR("Error sending %s: iwl4965_enqueue_hcmd failed: %d\n",
713                           get_cmd_string(cmd->id), ret);
714                 return ret;
715         }
716         return 0;
717 }
718
719 static int iwl4965_send_cmd_sync(struct iwl4965_priv *priv, struct iwl4965_host_cmd *cmd)
720 {
721         int cmd_idx;
722         int ret;
723         static atomic_t entry = ATOMIC_INIT(0); /* reentrance protection */
724
725         BUG_ON(cmd->meta.flags & CMD_ASYNC);
726
727          /* A synchronous command can not have a callback set. */
728         BUG_ON(cmd->meta.u.callback != NULL);
729
730         if (atomic_xchg(&entry, 1)) {
731                 IWL_ERROR("Error sending %s: Already sending a host command\n",
732                           get_cmd_string(cmd->id));
733                 return -EBUSY;
734         }
735
736         set_bit(STATUS_HCMD_ACTIVE, &priv->status);
737
738         if (cmd->meta.flags & CMD_WANT_SKB)
739                 cmd->meta.source = &cmd->meta;
740
741         cmd_idx = iwl4965_enqueue_hcmd(priv, cmd);
742         if (cmd_idx < 0) {
743                 ret = cmd_idx;
744                 IWL_ERROR("Error sending %s: iwl4965_enqueue_hcmd failed: %d\n",
745                           get_cmd_string(cmd->id), ret);
746                 goto out;
747         }
748
749         ret = wait_event_interruptible_timeout(priv->wait_command_queue,
750                         !test_bit(STATUS_HCMD_ACTIVE, &priv->status),
751                         HOST_COMPLETE_TIMEOUT);
752         if (!ret) {
753                 if (test_bit(STATUS_HCMD_ACTIVE, &priv->status)) {
754                         IWL_ERROR("Error sending %s: time out after %dms.\n",
755                                   get_cmd_string(cmd->id),
756                                   jiffies_to_msecs(HOST_COMPLETE_TIMEOUT));
757
758                         clear_bit(STATUS_HCMD_ACTIVE, &priv->status);
759                         ret = -ETIMEDOUT;
760                         goto cancel;
761                 }
762         }
763
764         if (test_bit(STATUS_RF_KILL_HW, &priv->status)) {
765                 IWL_DEBUG_INFO("Command %s aborted: RF KILL Switch\n",
766                                get_cmd_string(cmd->id));
767                 ret = -ECANCELED;
768                 goto fail;
769         }
770         if (test_bit(STATUS_FW_ERROR, &priv->status)) {
771                 IWL_DEBUG_INFO("Command %s failed: FW Error\n",
772                                get_cmd_string(cmd->id));
773                 ret = -EIO;
774                 goto fail;
775         }
776         if ((cmd->meta.flags & CMD_WANT_SKB) && !cmd->meta.u.skb) {
777                 IWL_ERROR("Error: Response NULL in '%s'\n",
778                           get_cmd_string(cmd->id));
779                 ret = -EIO;
780                 goto out;
781         }
782
783         ret = 0;
784         goto out;
785
786 cancel:
787         if (cmd->meta.flags & CMD_WANT_SKB) {
788                 struct iwl4965_cmd *qcmd;
789
790                 /* Cancel the CMD_WANT_SKB flag for the cmd in the
791                  * TX cmd queue. Otherwise in case the cmd comes
792                  * in later, it will possibly set an invalid
793                  * address (cmd->meta.source). */
794                 qcmd = &priv->txq[IWL_CMD_QUEUE_NUM].cmd[cmd_idx];
795                 qcmd->meta.flags &= ~CMD_WANT_SKB;
796         }
797 fail:
798         if (cmd->meta.u.skb) {
799                 dev_kfree_skb_any(cmd->meta.u.skb);
800                 cmd->meta.u.skb = NULL;
801         }
802 out:
803         atomic_set(&entry, 0);
804         return ret;
805 }
806
807 int iwl4965_send_cmd(struct iwl4965_priv *priv, struct iwl4965_host_cmd *cmd)
808 {
809         if (cmd->meta.flags & CMD_ASYNC)
810                 return iwl4965_send_cmd_async(priv, cmd);
811
812         return iwl4965_send_cmd_sync(priv, cmd);
813 }
814
815 int iwl4965_send_cmd_pdu(struct iwl4965_priv *priv, u8 id, u16 len, const void *data)
816 {
817         struct iwl4965_host_cmd cmd = {
818                 .id = id,
819                 .len = len,
820                 .data = data,
821         };
822
823         return iwl4965_send_cmd_sync(priv, &cmd);
824 }
825
826 static int __must_check iwl4965_send_cmd_u32(struct iwl4965_priv *priv, u8 id, u32 val)
827 {
828         struct iwl4965_host_cmd cmd = {
829                 .id = id,
830                 .len = sizeof(val),
831                 .data = &val,
832         };
833
834         return iwl4965_send_cmd_sync(priv, &cmd);
835 }
836
837 int iwl4965_send_statistics_request(struct iwl4965_priv *priv)
838 {
839         return iwl4965_send_cmd_u32(priv, REPLY_STATISTICS_CMD, 0);
840 }
841
842 /**
843  * iwl4965_rxon_add_station - add station into station table.
844  *
845  * there is only one AP station with id= IWL_AP_ID
846  * NOTE: mutex must be held before calling the this fnction
847 */
848 static int iwl4965_rxon_add_station(struct iwl4965_priv *priv,
849                                 const u8 *addr, int is_ap)
850 {
851         u8 sta_id;
852
853         sta_id = iwl4965_add_station_flags(priv, addr, is_ap, 0);
854         iwl4965_add_station(priv, addr, is_ap);
855
856         return sta_id;
857 }
858
859 /**
860  * iwl4965_set_rxon_channel - Set the phymode and channel values in staging RXON
861  * @phymode: MODE_IEEE80211A sets to 5.2GHz; all else set to 2.4GHz
862  * @channel: Any channel valid for the requested phymode
863
864  * In addition to setting the staging RXON, priv->phymode is also set.
865  *
866  * NOTE:  Does not commit to the hardware; it sets appropriate bit fields
867  * in the staging RXON flag structure based on the phymode
868  */
869 static int iwl4965_set_rxon_channel(struct iwl4965_priv *priv, u8 phymode, u16 channel)
870 {
871         if (!iwl4965_get_channel_info(priv, phymode, channel)) {
872                 IWL_DEBUG_INFO("Could not set channel to %d [%d]\n",
873                                channel, phymode);
874                 return -EINVAL;
875         }
876
877         if ((le16_to_cpu(priv->staging_rxon.channel) == channel) &&
878             (priv->phymode == phymode))
879                 return 0;
880
881         priv->staging_rxon.channel = cpu_to_le16(channel);
882         if (phymode == MODE_IEEE80211A)
883                 priv->staging_rxon.flags &= ~RXON_FLG_BAND_24G_MSK;
884         else
885                 priv->staging_rxon.flags |= RXON_FLG_BAND_24G_MSK;
886
887         priv->phymode = phymode;
888
889         IWL_DEBUG_INFO("Staging channel set to %d [%d]\n", channel, phymode);
890
891         return 0;
892 }
893
894 /**
895  * iwl4965_check_rxon_cmd - validate RXON structure is valid
896  *
897  * NOTE:  This is really only useful during development and can eventually
898  * be #ifdef'd out once the driver is stable and folks aren't actively
899  * making changes
900  */
901 static int iwl4965_check_rxon_cmd(struct iwl4965_rxon_cmd *rxon)
902 {
903         int error = 0;
904         int counter = 1;
905
906         if (rxon->flags & RXON_FLG_BAND_24G_MSK) {
907                 error |= le32_to_cpu(rxon->flags &
908                                 (RXON_FLG_TGJ_NARROW_BAND_MSK |
909                                  RXON_FLG_RADAR_DETECT_MSK));
910                 if (error)
911                         IWL_WARNING("check 24G fields %d | %d\n",
912                                     counter++, error);
913         } else {
914                 error |= (rxon->flags & RXON_FLG_SHORT_SLOT_MSK) ?
915                                 0 : le32_to_cpu(RXON_FLG_SHORT_SLOT_MSK);
916                 if (error)
917                         IWL_WARNING("check 52 fields %d | %d\n",
918                                     counter++, error);
919                 error |= le32_to_cpu(rxon->flags & RXON_FLG_CCK_MSK);
920                 if (error)
921                         IWL_WARNING("check 52 CCK %d | %d\n",
922                                     counter++, error);
923         }
924         error |= (rxon->node_addr[0] | rxon->bssid_addr[0]) & 0x1;
925         if (error)
926                 IWL_WARNING("check mac addr %d | %d\n", counter++, error);
927
928         /* make sure basic rates 6Mbps and 1Mbps are supported */
929         error |= (((rxon->ofdm_basic_rates & IWL_RATE_6M_MASK) == 0) &&
930                   ((rxon->cck_basic_rates & IWL_RATE_1M_MASK) == 0));
931         if (error)
932                 IWL_WARNING("check basic rate %d | %d\n", counter++, error);
933
934         error |= (le16_to_cpu(rxon->assoc_id) > 2007);
935         if (error)
936                 IWL_WARNING("check assoc id %d | %d\n", counter++, error);
937
938         error |= ((rxon->flags & (RXON_FLG_CCK_MSK | RXON_FLG_SHORT_SLOT_MSK))
939                         == (RXON_FLG_CCK_MSK | RXON_FLG_SHORT_SLOT_MSK));
940         if (error)
941                 IWL_WARNING("check CCK and short slot %d | %d\n",
942                             counter++, error);
943
944         error |= ((rxon->flags & (RXON_FLG_CCK_MSK | RXON_FLG_AUTO_DETECT_MSK))
945                         == (RXON_FLG_CCK_MSK | RXON_FLG_AUTO_DETECT_MSK));
946         if (error)
947                 IWL_WARNING("check CCK & auto detect %d | %d\n",
948                             counter++, error);
949
950         error |= ((rxon->flags & (RXON_FLG_AUTO_DETECT_MSK |
951                         RXON_FLG_TGG_PROTECT_MSK)) == RXON_FLG_TGG_PROTECT_MSK);
952         if (error)
953                 IWL_WARNING("check TGG and auto detect %d | %d\n",
954                             counter++, error);
955
956         if (error)
957                 IWL_WARNING("Tuning to channel %d\n",
958                             le16_to_cpu(rxon->channel));
959
960         if (error) {
961                 IWL_ERROR("Not a valid iwl4965_rxon_assoc_cmd field values\n");
962                 return -1;
963         }
964         return 0;
965 }
966
967 /**
968  * iwl4965_full_rxon_required - determine if RXON_ASSOC can be used in RXON commit
969  * @priv: staging_rxon is compared to active_rxon
970  *
971  * If the RXON structure is changing sufficient to require a new
972  * tune or to clear and reset the RXON_FILTER_ASSOC_MSK then return 1
973  * to indicate a new tune is required.
974  */
975 static int iwl4965_full_rxon_required(struct iwl4965_priv *priv)
976 {
977
978         /* These items are only settable from the full RXON command */
979         if (!(priv->active_rxon.filter_flags & RXON_FILTER_ASSOC_MSK) ||
980             compare_ether_addr(priv->staging_rxon.bssid_addr,
981                                priv->active_rxon.bssid_addr) ||
982             compare_ether_addr(priv->staging_rxon.node_addr,
983                                priv->active_rxon.node_addr) ||
984             compare_ether_addr(priv->staging_rxon.wlap_bssid_addr,
985                                priv->active_rxon.wlap_bssid_addr) ||
986             (priv->staging_rxon.dev_type != priv->active_rxon.dev_type) ||
987             (priv->staging_rxon.channel != priv->active_rxon.channel) ||
988             (priv->staging_rxon.air_propagation !=
989              priv->active_rxon.air_propagation) ||
990             (priv->staging_rxon.ofdm_ht_single_stream_basic_rates !=
991              priv->active_rxon.ofdm_ht_single_stream_basic_rates) ||
992             (priv->staging_rxon.ofdm_ht_dual_stream_basic_rates !=
993              priv->active_rxon.ofdm_ht_dual_stream_basic_rates) ||
994             (priv->staging_rxon.rx_chain != priv->active_rxon.rx_chain) ||
995             (priv->staging_rxon.assoc_id != priv->active_rxon.assoc_id))
996                 return 1;
997
998         /* flags, filter_flags, ofdm_basic_rates, and cck_basic_rates can
999          * be updated with the RXON_ASSOC command -- however only some
1000          * flag transitions are allowed using RXON_ASSOC */
1001
1002         /* Check if we are not switching bands */
1003         if ((priv->staging_rxon.flags & RXON_FLG_BAND_24G_MSK) !=
1004             (priv->active_rxon.flags & RXON_FLG_BAND_24G_MSK))
1005                 return 1;
1006
1007         /* Check if we are switching association toggle */
1008         if ((priv->staging_rxon.filter_flags & RXON_FILTER_ASSOC_MSK) !=
1009                 (priv->active_rxon.filter_flags & RXON_FILTER_ASSOC_MSK))
1010                 return 1;
1011
1012         return 0;
1013 }
1014
1015 static int iwl4965_send_rxon_assoc(struct iwl4965_priv *priv)
1016 {
1017         int rc = 0;
1018         struct iwl4965_rx_packet *res = NULL;
1019         struct iwl4965_rxon_assoc_cmd rxon_assoc;
1020         struct iwl4965_host_cmd cmd = {
1021                 .id = REPLY_RXON_ASSOC,
1022                 .len = sizeof(rxon_assoc),
1023                 .meta.flags = CMD_WANT_SKB,
1024                 .data = &rxon_assoc,
1025         };
1026         const struct iwl4965_rxon_cmd *rxon1 = &priv->staging_rxon;
1027         const struct iwl4965_rxon_cmd *rxon2 = &priv->active_rxon;
1028
1029         if ((rxon1->flags == rxon2->flags) &&
1030             (rxon1->filter_flags == rxon2->filter_flags) &&
1031             (rxon1->cck_basic_rates == rxon2->cck_basic_rates) &&
1032             (rxon1->ofdm_ht_single_stream_basic_rates ==
1033              rxon2->ofdm_ht_single_stream_basic_rates) &&
1034             (rxon1->ofdm_ht_dual_stream_basic_rates ==
1035              rxon2->ofdm_ht_dual_stream_basic_rates) &&
1036             (rxon1->rx_chain == rxon2->rx_chain) &&
1037             (rxon1->ofdm_basic_rates == rxon2->ofdm_basic_rates)) {
1038                 IWL_DEBUG_INFO("Using current RXON_ASSOC.  Not resending.\n");
1039                 return 0;
1040         }
1041
1042         rxon_assoc.flags = priv->staging_rxon.flags;
1043         rxon_assoc.filter_flags = priv->staging_rxon.filter_flags;
1044         rxon_assoc.ofdm_basic_rates = priv->staging_rxon.ofdm_basic_rates;
1045         rxon_assoc.cck_basic_rates = priv->staging_rxon.cck_basic_rates;
1046         rxon_assoc.reserved = 0;
1047         rxon_assoc.ofdm_ht_single_stream_basic_rates =
1048             priv->staging_rxon.ofdm_ht_single_stream_basic_rates;
1049         rxon_assoc.ofdm_ht_dual_stream_basic_rates =
1050             priv->staging_rxon.ofdm_ht_dual_stream_basic_rates;
1051         rxon_assoc.rx_chain_select_flags = priv->staging_rxon.rx_chain;
1052
1053         rc = iwl4965_send_cmd_sync(priv, &cmd);
1054         if (rc)
1055                 return rc;
1056
1057         res = (struct iwl4965_rx_packet *)cmd.meta.u.skb->data;
1058         if (res->hdr.flags & IWL_CMD_FAILED_MSK) {
1059                 IWL_ERROR("Bad return from REPLY_RXON_ASSOC command\n");
1060                 rc = -EIO;
1061         }
1062
1063         priv->alloc_rxb_skb--;
1064         dev_kfree_skb_any(cmd.meta.u.skb);
1065
1066         return rc;
1067 }
1068
1069 /**
1070  * iwl4965_commit_rxon - commit staging_rxon to hardware
1071  *
1072  * The RXON command in staging_rxon is committed to the hardware and
1073  * the active_rxon structure is updated with the new data.  This
1074  * function correctly transitions out of the RXON_ASSOC_MSK state if
1075  * a HW tune is required based on the RXON structure changes.
1076  */
1077 static int iwl4965_commit_rxon(struct iwl4965_priv *priv)
1078 {
1079         /* cast away the const for active_rxon in this function */
1080         struct iwl4965_rxon_cmd *active_rxon = (void *)&priv->active_rxon;
1081         DECLARE_MAC_BUF(mac);
1082         int rc = 0;
1083
1084         if (!iwl4965_is_alive(priv))
1085                 return -1;
1086
1087         /* always get timestamp with Rx frame */
1088         priv->staging_rxon.flags |= RXON_FLG_TSF2HOST_MSK;
1089
1090         rc = iwl4965_check_rxon_cmd(&priv->staging_rxon);
1091         if (rc) {
1092                 IWL_ERROR("Invalid RXON configuration.  Not committing.\n");
1093                 return -EINVAL;
1094         }
1095
1096         /* If we don't need to send a full RXON, we can use
1097          * iwl4965_rxon_assoc_cmd which is used to reconfigure filter
1098          * and other flags for the current radio configuration. */
1099         if (!iwl4965_full_rxon_required(priv)) {
1100                 rc = iwl4965_send_rxon_assoc(priv);
1101                 if (rc) {
1102                         IWL_ERROR("Error setting RXON_ASSOC "
1103                                   "configuration (%d).\n", rc);
1104                         return rc;
1105                 }
1106
1107                 memcpy(active_rxon, &priv->staging_rxon, sizeof(*active_rxon));
1108
1109                 return 0;
1110         }
1111
1112         /* station table will be cleared */
1113         priv->assoc_station_added = 0;
1114
1115 #ifdef CONFIG_IWL4965_SENSITIVITY
1116         priv->sensitivity_data.state = IWL_SENS_CALIB_NEED_REINIT;
1117         if (!priv->error_recovering)
1118                 priv->start_calib = 0;
1119
1120         iwl4965_init_sensitivity(priv, CMD_ASYNC, 1);
1121 #endif /* CONFIG_IWL4965_SENSITIVITY */
1122
1123         /* If we are currently associated and the new config requires
1124          * an RXON_ASSOC and the new config wants the associated mask enabled,
1125          * we must clear the associated from the active configuration
1126          * before we apply the new config */
1127         if (iwl4965_is_associated(priv) &&
1128             (priv->staging_rxon.filter_flags & RXON_FILTER_ASSOC_MSK)) {
1129                 IWL_DEBUG_INFO("Toggling associated bit on current RXON\n");
1130                 active_rxon->filter_flags &= ~RXON_FILTER_ASSOC_MSK;
1131
1132                 rc = iwl4965_send_cmd_pdu(priv, REPLY_RXON,
1133                                       sizeof(struct iwl4965_rxon_cmd),
1134                                       &priv->active_rxon);
1135
1136                 /* If the mask clearing failed then we set
1137                  * active_rxon back to what it was previously */
1138                 if (rc) {
1139                         active_rxon->filter_flags |= RXON_FILTER_ASSOC_MSK;
1140                         IWL_ERROR("Error clearing ASSOC_MSK on current "
1141                                   "configuration (%d).\n", rc);
1142                         return rc;
1143                 }
1144         }
1145
1146         IWL_DEBUG_INFO("Sending RXON\n"
1147                        "* with%s RXON_FILTER_ASSOC_MSK\n"
1148                        "* channel = %d\n"
1149                        "* bssid = %s\n",
1150                        ((priv->staging_rxon.filter_flags &
1151                          RXON_FILTER_ASSOC_MSK) ? "" : "out"),
1152                        le16_to_cpu(priv->staging_rxon.channel),
1153                        print_mac(mac, priv->staging_rxon.bssid_addr));
1154
1155         /* Apply the new configuration */
1156         rc = iwl4965_send_cmd_pdu(priv, REPLY_RXON,
1157                               sizeof(struct iwl4965_rxon_cmd), &priv->staging_rxon);
1158         if (rc) {
1159                 IWL_ERROR("Error setting new configuration (%d).\n", rc);
1160                 return rc;
1161         }
1162
1163         iwl4965_clear_stations_table(priv);
1164
1165 #ifdef CONFIG_IWL4965_SENSITIVITY
1166         if (!priv->error_recovering)
1167                 priv->start_calib = 0;
1168
1169         priv->sensitivity_data.state = IWL_SENS_CALIB_NEED_REINIT;
1170         iwl4965_init_sensitivity(priv, CMD_ASYNC, 1);
1171 #endif /* CONFIG_IWL4965_SENSITIVITY */
1172
1173         memcpy(active_rxon, &priv->staging_rxon, sizeof(*active_rxon));
1174
1175         /* If we issue a new RXON command which required a tune then we must
1176          * send a new TXPOWER command or we won't be able to Tx any frames */
1177         rc = iwl4965_hw_reg_send_txpower(priv);
1178         if (rc) {
1179                 IWL_ERROR("Error setting Tx power (%d).\n", rc);
1180                 return rc;
1181         }
1182
1183         /* Add the broadcast address so we can send broadcast frames */
1184         if (iwl4965_rxon_add_station(priv, iwl4965_broadcast_addr, 0) ==
1185             IWL_INVALID_STATION) {
1186                 IWL_ERROR("Error adding BROADCAST address for transmit.\n");
1187                 return -EIO;
1188         }
1189
1190         /* If we have set the ASSOC_MSK and we are in BSS mode then
1191          * add the IWL_AP_ID to the station rate table */
1192         if (iwl4965_is_associated(priv) &&
1193             (priv->iw_mode == IEEE80211_IF_TYPE_STA)) {
1194                 if (iwl4965_rxon_add_station(priv, priv->active_rxon.bssid_addr, 1)
1195                     == IWL_INVALID_STATION) {
1196                         IWL_ERROR("Error adding AP address for transmit.\n");
1197                         return -EIO;
1198                 }
1199                 priv->assoc_station_added = 1;
1200         }
1201
1202         return 0;
1203 }
1204
1205 static int iwl4965_send_bt_config(struct iwl4965_priv *priv)
1206 {
1207         struct iwl4965_bt_cmd bt_cmd = {
1208                 .flags = 3,
1209                 .lead_time = 0xAA,
1210                 .max_kill = 1,
1211                 .kill_ack_mask = 0,
1212                 .kill_cts_mask = 0,
1213         };
1214
1215         return iwl4965_send_cmd_pdu(priv, REPLY_BT_CONFIG,
1216                                 sizeof(struct iwl4965_bt_cmd), &bt_cmd);
1217 }
1218
1219 static int iwl4965_send_scan_abort(struct iwl4965_priv *priv)
1220 {
1221         int rc = 0;
1222         struct iwl4965_rx_packet *res;
1223         struct iwl4965_host_cmd cmd = {
1224                 .id = REPLY_SCAN_ABORT_CMD,
1225                 .meta.flags = CMD_WANT_SKB,
1226         };
1227
1228         /* If there isn't a scan actively going on in the hardware
1229          * then we are in between scan bands and not actually
1230          * actively scanning, so don't send the abort command */
1231         if (!test_bit(STATUS_SCAN_HW, &priv->status)) {
1232                 clear_bit(STATUS_SCAN_ABORTING, &priv->status);
1233                 return 0;
1234         }
1235
1236         rc = iwl4965_send_cmd_sync(priv, &cmd);
1237         if (rc) {
1238                 clear_bit(STATUS_SCAN_ABORTING, &priv->status);
1239                 return rc;
1240         }
1241
1242         res = (struct iwl4965_rx_packet *)cmd.meta.u.skb->data;
1243         if (res->u.status != CAN_ABORT_STATUS) {
1244                 /* The scan abort will return 1 for success or
1245                  * 2 for "failure".  A failure condition can be
1246                  * due to simply not being in an active scan which
1247                  * can occur if we send the scan abort before we
1248                  * the microcode has notified us that a scan is
1249                  * completed. */
1250                 IWL_DEBUG_INFO("SCAN_ABORT returned %d.\n", res->u.status);
1251                 clear_bit(STATUS_SCAN_ABORTING, &priv->status);
1252                 clear_bit(STATUS_SCAN_HW, &priv->status);
1253         }
1254
1255         dev_kfree_skb_any(cmd.meta.u.skb);
1256
1257         return rc;
1258 }
1259
1260 static int iwl4965_card_state_sync_callback(struct iwl4965_priv *priv,
1261                                         struct iwl4965_cmd *cmd,
1262                                         struct sk_buff *skb)
1263 {
1264         return 1;
1265 }
1266
1267 /*
1268  * CARD_STATE_CMD
1269  *
1270  * Use: Sets the internal card state to enable, disable, or halt
1271  *
1272  * When in the 'enable' state the card operates as normal.
1273  * When in the 'disable' state, the card enters into a low power mode.
1274  * When in the 'halt' state, the card is shut down and must be fully
1275  * restarted to come back on.
1276  */
1277 static int iwl4965_send_card_state(struct iwl4965_priv *priv, u32 flags, u8 meta_flag)
1278 {
1279         struct iwl4965_host_cmd cmd = {
1280                 .id = REPLY_CARD_STATE_CMD,
1281                 .len = sizeof(u32),
1282                 .data = &flags,
1283                 .meta.flags = meta_flag,
1284         };
1285
1286         if (meta_flag & CMD_ASYNC)
1287                 cmd.meta.u.callback = iwl4965_card_state_sync_callback;
1288
1289         return iwl4965_send_cmd(priv, &cmd);
1290 }
1291
1292 static int iwl4965_add_sta_sync_callback(struct iwl4965_priv *priv,
1293                                      struct iwl4965_cmd *cmd, struct sk_buff *skb)
1294 {
1295         struct iwl4965_rx_packet *res = NULL;
1296
1297         if (!skb) {
1298                 IWL_ERROR("Error: Response NULL in REPLY_ADD_STA.\n");
1299                 return 1;
1300         }
1301
1302         res = (struct iwl4965_rx_packet *)skb->data;
1303         if (res->hdr.flags & IWL_CMD_FAILED_MSK) {
1304                 IWL_ERROR("Bad return from REPLY_ADD_STA (0x%08X)\n",
1305                           res->hdr.flags);
1306                 return 1;
1307         }
1308
1309         switch (res->u.add_sta.status) {
1310         case ADD_STA_SUCCESS_MSK:
1311                 break;
1312         default:
1313                 break;
1314         }
1315
1316         /* We didn't cache the SKB; let the caller free it */
1317         return 1;
1318 }
1319
1320 int iwl4965_send_add_station(struct iwl4965_priv *priv,
1321                          struct iwl4965_addsta_cmd *sta, u8 flags)
1322 {
1323         struct iwl4965_rx_packet *res = NULL;
1324         int rc = 0;
1325         struct iwl4965_host_cmd cmd = {
1326                 .id = REPLY_ADD_STA,
1327                 .len = sizeof(struct iwl4965_addsta_cmd),
1328                 .meta.flags = flags,
1329                 .data = sta,
1330         };
1331
1332         if (flags & CMD_ASYNC)
1333                 cmd.meta.u.callback = iwl4965_add_sta_sync_callback;
1334         else
1335                 cmd.meta.flags |= CMD_WANT_SKB;
1336
1337         rc = iwl4965_send_cmd(priv, &cmd);
1338
1339         if (rc || (flags & CMD_ASYNC))
1340                 return rc;
1341
1342         res = (struct iwl4965_rx_packet *)cmd.meta.u.skb->data;
1343         if (res->hdr.flags & IWL_CMD_FAILED_MSK) {
1344                 IWL_ERROR("Bad return from REPLY_ADD_STA (0x%08X)\n",
1345                           res->hdr.flags);
1346                 rc = -EIO;
1347         }
1348
1349         if (rc == 0) {
1350                 switch (res->u.add_sta.status) {
1351                 case ADD_STA_SUCCESS_MSK:
1352                         IWL_DEBUG_INFO("REPLY_ADD_STA PASSED\n");
1353                         break;
1354                 default:
1355                         rc = -EIO;
1356                         IWL_WARNING("REPLY_ADD_STA failed\n");
1357                         break;
1358                 }
1359         }
1360
1361         priv->alloc_rxb_skb--;
1362         dev_kfree_skb_any(cmd.meta.u.skb);
1363
1364         return rc;
1365 }
1366
1367 static int iwl4965_update_sta_key_info(struct iwl4965_priv *priv,
1368                                    struct ieee80211_key_conf *keyconf,
1369                                    u8 sta_id)
1370 {
1371         unsigned long flags;
1372         __le16 key_flags = 0;
1373
1374         switch (keyconf->alg) {
1375         case ALG_CCMP:
1376                 key_flags |= STA_KEY_FLG_CCMP;
1377                 key_flags |= cpu_to_le16(
1378                                 keyconf->keyidx << STA_KEY_FLG_KEYID_POS);
1379                 key_flags &= ~STA_KEY_FLG_INVALID;
1380                 break;
1381         case ALG_TKIP:
1382         case ALG_WEP:
1383         default:
1384                 return -EINVAL;
1385         }
1386         spin_lock_irqsave(&priv->sta_lock, flags);
1387         priv->stations[sta_id].keyinfo.alg = keyconf->alg;
1388         priv->stations[sta_id].keyinfo.keylen = keyconf->keylen;
1389         memcpy(priv->stations[sta_id].keyinfo.key, keyconf->key,
1390                keyconf->keylen);
1391
1392         memcpy(priv->stations[sta_id].sta.key.key, keyconf->key,
1393                keyconf->keylen);
1394         priv->stations[sta_id].sta.key.key_flags = key_flags;
1395         priv->stations[sta_id].sta.sta.modify_mask = STA_MODIFY_KEY_MASK;
1396         priv->stations[sta_id].sta.mode = STA_CONTROL_MODIFY_MSK;
1397
1398         spin_unlock_irqrestore(&priv->sta_lock, flags);
1399
1400         IWL_DEBUG_INFO("hwcrypto: modify ucode station key info\n");
1401         iwl4965_send_add_station(priv, &priv->stations[sta_id].sta, 0);
1402         return 0;
1403 }
1404
1405 static int iwl4965_clear_sta_key_info(struct iwl4965_priv *priv, u8 sta_id)
1406 {
1407         unsigned long flags;
1408
1409         spin_lock_irqsave(&priv->sta_lock, flags);
1410         memset(&priv->stations[sta_id].keyinfo, 0, sizeof(struct iwl4965_hw_key));
1411         memset(&priv->stations[sta_id].sta.key, 0, sizeof(struct iwl4965_keyinfo));
1412         priv->stations[sta_id].sta.key.key_flags = STA_KEY_FLG_NO_ENC;
1413         priv->stations[sta_id].sta.sta.modify_mask = STA_MODIFY_KEY_MASK;
1414         priv->stations[sta_id].sta.mode = STA_CONTROL_MODIFY_MSK;
1415         spin_unlock_irqrestore(&priv->sta_lock, flags);
1416
1417         IWL_DEBUG_INFO("hwcrypto: clear ucode station key info\n");
1418         iwl4965_send_add_station(priv, &priv->stations[sta_id].sta, 0);
1419         return 0;
1420 }
1421
1422 static void iwl4965_clear_free_frames(struct iwl4965_priv *priv)
1423 {
1424         struct list_head *element;
1425
1426         IWL_DEBUG_INFO("%d frames on pre-allocated heap on clear.\n",
1427                        priv->frames_count);
1428
1429         while (!list_empty(&priv->free_frames)) {
1430                 element = priv->free_frames.next;
1431                 list_del(element);
1432                 kfree(list_entry(element, struct iwl4965_frame, list));
1433                 priv->frames_count--;
1434         }
1435
1436         if (priv->frames_count) {
1437                 IWL_WARNING("%d frames still in use.  Did we lose one?\n",
1438                             priv->frames_count);
1439                 priv->frames_count = 0;
1440         }
1441 }
1442
1443 static struct iwl4965_frame *iwl4965_get_free_frame(struct iwl4965_priv *priv)
1444 {
1445         struct iwl4965_frame *frame;
1446         struct list_head *element;
1447         if (list_empty(&priv->free_frames)) {
1448                 frame = kzalloc(sizeof(*frame), GFP_KERNEL);
1449                 if (!frame) {
1450                         IWL_ERROR("Could not allocate frame!\n");
1451                         return NULL;
1452                 }
1453
1454                 priv->frames_count++;
1455                 return frame;
1456         }
1457
1458         element = priv->free_frames.next;
1459         list_del(element);
1460         return list_entry(element, struct iwl4965_frame, list);
1461 }
1462
1463 static void iwl4965_free_frame(struct iwl4965_priv *priv, struct iwl4965_frame *frame)
1464 {
1465         memset(frame, 0, sizeof(*frame));
1466         list_add(&frame->list, &priv->free_frames);
1467 }
1468
1469 unsigned int iwl4965_fill_beacon_frame(struct iwl4965_priv *priv,
1470                                 struct ieee80211_hdr *hdr,
1471                                 const u8 *dest, int left)
1472 {
1473
1474         if (!iwl4965_is_associated(priv) || !priv->ibss_beacon ||
1475             ((priv->iw_mode != IEEE80211_IF_TYPE_IBSS) &&
1476              (priv->iw_mode != IEEE80211_IF_TYPE_AP)))
1477                 return 0;
1478
1479         if (priv->ibss_beacon->len > left)
1480                 return 0;
1481
1482         memcpy(hdr, priv->ibss_beacon->data, priv->ibss_beacon->len);
1483
1484         return priv->ibss_beacon->len;
1485 }
1486
1487 int iwl4965_rate_index_from_plcp(int plcp)
1488 {
1489         int i = 0;
1490
1491         if (plcp & RATE_MCS_HT_MSK) {
1492                 i = (plcp & 0xff);
1493
1494                 if (i >= IWL_RATE_MIMO_6M_PLCP)
1495                         i = i - IWL_RATE_MIMO_6M_PLCP;
1496
1497                 i += IWL_FIRST_OFDM_RATE;
1498                 /* skip 9M not supported in ht*/
1499                 if (i >= IWL_RATE_9M_INDEX)
1500                         i += 1;
1501                 if ((i >= IWL_FIRST_OFDM_RATE) &&
1502                     (i <= IWL_LAST_OFDM_RATE))
1503                         return i;
1504         } else {
1505                 for (i = 0; i < ARRAY_SIZE(iwl4965_rates); i++)
1506                         if (iwl4965_rates[i].plcp == (plcp &0xFF))
1507                                 return i;
1508         }
1509         return -1;
1510 }
1511
1512 static u8 iwl4965_rate_get_lowest_plcp(int rate_mask)
1513 {
1514         u8 i;
1515
1516         for (i = IWL_RATE_1M_INDEX; i != IWL_RATE_INVALID;
1517              i = iwl4965_rates[i].next_ieee) {
1518                 if (rate_mask & (1 << i))
1519                         return iwl4965_rates[i].plcp;
1520         }
1521
1522         return IWL_RATE_INVALID;
1523 }
1524
1525 static int iwl4965_send_beacon_cmd(struct iwl4965_priv *priv)
1526 {
1527         struct iwl4965_frame *frame;
1528         unsigned int frame_size;
1529         int rc;
1530         u8 rate;
1531
1532         frame = iwl4965_get_free_frame(priv);
1533
1534         if (!frame) {
1535                 IWL_ERROR("Could not obtain free frame buffer for beacon "
1536                           "command.\n");
1537                 return -ENOMEM;
1538         }
1539
1540         if (!(priv->staging_rxon.flags & RXON_FLG_BAND_24G_MSK)) {
1541                 rate = iwl4965_rate_get_lowest_plcp(priv->active_rate_basic &
1542                                                 0xFF0);
1543                 if (rate == IWL_INVALID_RATE)
1544                         rate = IWL_RATE_6M_PLCP;
1545         } else {
1546                 rate = iwl4965_rate_get_lowest_plcp(priv->active_rate_basic & 0xF);
1547                 if (rate == IWL_INVALID_RATE)
1548                         rate = IWL_RATE_1M_PLCP;
1549         }
1550
1551         frame_size = iwl4965_hw_get_beacon_cmd(priv, frame, rate);
1552
1553         rc = iwl4965_send_cmd_pdu(priv, REPLY_TX_BEACON, frame_size,
1554                               &frame->u.cmd[0]);
1555
1556         iwl4965_free_frame(priv, frame);
1557
1558         return rc;
1559 }
1560
1561 /******************************************************************************
1562  *
1563  * EEPROM related functions
1564  *
1565  ******************************************************************************/
1566
1567 static void get_eeprom_mac(struct iwl4965_priv *priv, u8 *mac)
1568 {
1569         memcpy(mac, priv->eeprom.mac_address, 6);
1570 }
1571
1572 /**
1573  * iwl4965_eeprom_init - read EEPROM contents
1574  *
1575  * Load the EEPROM from adapter into priv->eeprom
1576  *
1577  * NOTE:  This routine uses the non-debug IO access functions.
1578  */
1579 int iwl4965_eeprom_init(struct iwl4965_priv *priv)
1580 {
1581         u16 *e = (u16 *)&priv->eeprom;
1582         u32 gp = iwl4965_read32(priv, CSR_EEPROM_GP);
1583         u32 r;
1584         int sz = sizeof(priv->eeprom);
1585         int rc;
1586         int i;
1587         u16 addr;
1588
1589         /* The EEPROM structure has several padding buffers within it
1590          * and when adding new EEPROM maps is subject to programmer errors
1591          * which may be very difficult to identify without explicitly
1592          * checking the resulting size of the eeprom map. */
1593         BUILD_BUG_ON(sizeof(priv->eeprom) != IWL_EEPROM_IMAGE_SIZE);
1594
1595         if ((gp & CSR_EEPROM_GP_VALID_MSK) == CSR_EEPROM_GP_BAD_SIGNATURE) {
1596                 IWL_ERROR("EEPROM not found, EEPROM_GP=0x%08x", gp);
1597                 return -ENOENT;
1598         }
1599
1600         rc = iwl4965_eeprom_acquire_semaphore(priv);
1601         if (rc < 0) {
1602                 IWL_ERROR("Failed to acquire EEPROM semaphore.\n");
1603                 return -ENOENT;
1604         }
1605
1606         /* eeprom is an array of 16bit values */
1607         for (addr = 0; addr < sz; addr += sizeof(u16)) {
1608                 _iwl4965_write32(priv, CSR_EEPROM_REG, addr << 1);
1609                 _iwl4965_clear_bit(priv, CSR_EEPROM_REG, CSR_EEPROM_REG_BIT_CMD);
1610
1611                 for (i = 0; i < IWL_EEPROM_ACCESS_TIMEOUT;
1612                                         i += IWL_EEPROM_ACCESS_DELAY) {
1613                         r = _iwl4965_read_direct32(priv, CSR_EEPROM_REG);
1614                         if (r & CSR_EEPROM_REG_READ_VALID_MSK)
1615                                 break;
1616                         udelay(IWL_EEPROM_ACCESS_DELAY);
1617                 }
1618
1619                 if (!(r & CSR_EEPROM_REG_READ_VALID_MSK)) {
1620                         IWL_ERROR("Time out reading EEPROM[%d]", addr);
1621                         rc = -ETIMEDOUT;
1622                         goto done;
1623                 }
1624                 e[addr / 2] = le16_to_cpu(r >> 16);
1625         }
1626         rc = 0;
1627
1628 done:
1629         iwl4965_eeprom_release_semaphore(priv);
1630         return rc;
1631 }
1632
1633 /******************************************************************************
1634  *
1635  * Misc. internal state and helper functions
1636  *
1637  ******************************************************************************/
1638 #ifdef CONFIG_IWL4965_DEBUG
1639
1640 /**
1641  * iwl4965_report_frame - dump frame to syslog during debug sessions
1642  *
1643  * hack this function to show different aspects of received frames,
1644  * including selective frame dumps.
1645  * group100 parameter selects whether to show 1 out of 100 good frames.
1646  *
1647  * TODO:  ieee80211_hdr stuff is common to 3945 and 4965, so frame type
1648  *        info output is okay, but some of this stuff (e.g. iwl4965_rx_frame_stats)
1649  *        is 3945-specific and gives bad output for 4965.  Need to split the
1650  *        functionality, keep common stuff here.
1651  */
1652 void iwl4965_report_frame(struct iwl4965_priv *priv,
1653                       struct iwl4965_rx_packet *pkt,
1654                       struct ieee80211_hdr *header, int group100)
1655 {
1656         u32 to_us;
1657         u32 print_summary = 0;
1658         u32 print_dump = 0;     /* set to 1 to dump all frames' contents */
1659         u32 hundred = 0;
1660         u32 dataframe = 0;
1661         u16 fc;
1662         u16 seq_ctl;
1663         u16 channel;
1664         u16 phy_flags;
1665         int rate_sym;
1666         u16 length;
1667         u16 status;
1668         u16 bcn_tmr;
1669         u32 tsf_low;
1670         u64 tsf;
1671         u8 rssi;
1672         u8 agc;
1673         u16 sig_avg;
1674         u16 noise_diff;
1675         struct iwl4965_rx_frame_stats *rx_stats = IWL_RX_STATS(pkt);
1676         struct iwl4965_rx_frame_hdr *rx_hdr = IWL_RX_HDR(pkt);
1677         struct iwl4965_rx_frame_end *rx_end = IWL_RX_END(pkt);
1678         u8 *data = IWL_RX_DATA(pkt);
1679
1680         /* MAC header */
1681         fc = le16_to_cpu(header->frame_control);
1682         seq_ctl = le16_to_cpu(header->seq_ctrl);
1683
1684         /* metadata */
1685         channel = le16_to_cpu(rx_hdr->channel);
1686         phy_flags = le16_to_cpu(rx_hdr->phy_flags);
1687         rate_sym = rx_hdr->rate;
1688         length = le16_to_cpu(rx_hdr->len);
1689
1690         /* end-of-frame status and timestamp */
1691         status = le32_to_cpu(rx_end->status);
1692         bcn_tmr = le32_to_cpu(rx_end->beacon_timestamp);
1693         tsf_low = le64_to_cpu(rx_end->timestamp) & 0x0ffffffff;
1694         tsf = le64_to_cpu(rx_end->timestamp);
1695
1696         /* signal statistics */
1697         rssi = rx_stats->rssi;
1698         agc = rx_stats->agc;
1699         sig_avg = le16_to_cpu(rx_stats->sig_avg);
1700         noise_diff = le16_to_cpu(rx_stats->noise_diff);
1701
1702         to_us = !compare_ether_addr(header->addr1, priv->mac_addr);
1703
1704         /* if data frame is to us and all is good,
1705          *   (optionally) print summary for only 1 out of every 100 */
1706         if (to_us && (fc & ~IEEE80211_FCTL_PROTECTED) ==
1707             (IEEE80211_FCTL_FROMDS | IEEE80211_FTYPE_DATA)) {
1708                 dataframe = 1;
1709                 if (!group100)
1710                         print_summary = 1;      /* print each frame */
1711                 else if (priv->framecnt_to_us < 100) {
1712                         priv->framecnt_to_us++;
1713                         print_summary = 0;
1714                 } else {
1715                         priv->framecnt_to_us = 0;
1716                         print_summary = 1;
1717                         hundred = 1;
1718                 }
1719         } else {
1720                 /* print summary for all other frames */
1721                 print_summary = 1;
1722         }
1723
1724         if (print_summary) {
1725                 char *title;
1726                 u32 rate;
1727
1728                 if (hundred)
1729                         title = "100Frames";
1730                 else if (fc & IEEE80211_FCTL_RETRY)
1731                         title = "Retry";
1732                 else if (ieee80211_is_assoc_response(fc))
1733                         title = "AscRsp";
1734                 else if (ieee80211_is_reassoc_response(fc))
1735                         title = "RasRsp";
1736                 else if (ieee80211_is_probe_response(fc)) {
1737                         title = "PrbRsp";
1738                         print_dump = 1; /* dump frame contents */
1739                 } else if (ieee80211_is_beacon(fc)) {
1740                         title = "Beacon";
1741                         print_dump = 1; /* dump frame contents */
1742                 } else if (ieee80211_is_atim(fc))
1743                         title = "ATIM";
1744                 else if (ieee80211_is_auth(fc))
1745                         title = "Auth";
1746                 else if (ieee80211_is_deauth(fc))
1747                         title = "DeAuth";
1748                 else if (ieee80211_is_disassoc(fc))
1749                         title = "DisAssoc";
1750                 else
1751                         title = "Frame";
1752
1753                 rate = iwl4965_rate_index_from_plcp(rate_sym);
1754                 if (rate == -1)
1755                         rate = 0;
1756                 else
1757                         rate = iwl4965_rates[rate].ieee / 2;
1758
1759                 /* print frame summary.
1760                  * MAC addresses show just the last byte (for brevity),
1761                  *    but you can hack it to show more, if you'd like to. */
1762                 if (dataframe)
1763                         IWL_DEBUG_RX("%s: mhd=0x%04x, dst=0x%02x, "
1764                                      "len=%u, rssi=%d, chnl=%d, rate=%u, \n",
1765                                      title, fc, header->addr1[5],
1766                                      length, rssi, channel, rate);
1767                 else {
1768                         /* src/dst addresses assume managed mode */
1769                         IWL_DEBUG_RX("%s: 0x%04x, dst=0x%02x, "
1770                                      "src=0x%02x, rssi=%u, tim=%lu usec, "
1771                                      "phy=0x%02x, chnl=%d\n",
1772                                      title, fc, header->addr1[5],
1773                                      header->addr3[5], rssi,
1774                                      tsf_low - priv->scan_start_tsf,
1775                                      phy_flags, channel);
1776                 }
1777         }
1778         if (print_dump)
1779                 iwl4965_print_hex_dump(IWL_DL_RX, data, length);
1780 }
1781 #endif
1782
1783 static void iwl4965_unset_hw_setting(struct iwl4965_priv *priv)
1784 {
1785         if (priv->hw_setting.shared_virt)
1786                 pci_free_consistent(priv->pci_dev,
1787                                     sizeof(struct iwl4965_shared),
1788                                     priv->hw_setting.shared_virt,
1789                                     priv->hw_setting.shared_phys);
1790 }
1791
1792 /**
1793  * iwl4965_supported_rate_to_ie - fill in the supported rate in IE field
1794  *
1795  * return : set the bit for each supported rate insert in ie
1796  */
1797 static u16 iwl4965_supported_rate_to_ie(u8 *ie, u16 supported_rate,
1798                                     u16 basic_rate, int *left)
1799 {
1800         u16 ret_rates = 0, bit;
1801         int i;
1802         u8 *cnt = ie;
1803         u8 *rates = ie + 1;
1804
1805         for (bit = 1, i = 0; i < IWL_RATE_COUNT; i++, bit <<= 1) {
1806                 if (bit & supported_rate) {
1807                         ret_rates |= bit;
1808                         rates[*cnt] = iwl4965_rates[i].ieee |
1809                                 ((bit & basic_rate) ? 0x80 : 0x00);
1810                         (*cnt)++;
1811                         (*left)--;
1812                         if ((*left <= 0) ||
1813                             (*cnt >= IWL_SUPPORTED_RATES_IE_LEN))
1814                                 break;
1815                 }
1816         }
1817
1818         return ret_rates;
1819 }
1820
1821 #ifdef CONFIG_IWL4965_HT
1822 void static iwl4965_set_ht_capab(struct ieee80211_hw *hw,
1823                              struct ieee80211_ht_capability *ht_cap,
1824                              u8 use_wide_chan);
1825 #endif
1826
1827 /**
1828  * iwl4965_fill_probe_req - fill in all required fields and IE for probe request
1829  */
1830 static u16 iwl4965_fill_probe_req(struct iwl4965_priv *priv,
1831                               struct ieee80211_mgmt *frame,
1832                               int left, int is_direct)
1833 {
1834         int len = 0;
1835         u8 *pos = NULL;
1836         u16 active_rates, ret_rates, cck_rates, active_rate_basic;
1837
1838         /* Make sure there is enough space for the probe request,
1839          * two mandatory IEs and the data */
1840         left -= 24;
1841         if (left < 0)
1842                 return 0;
1843         len += 24;
1844
1845         frame->frame_control = cpu_to_le16(IEEE80211_STYPE_PROBE_REQ);
1846         memcpy(frame->da, iwl4965_broadcast_addr, ETH_ALEN);
1847         memcpy(frame->sa, priv->mac_addr, ETH_ALEN);
1848         memcpy(frame->bssid, iwl4965_broadcast_addr, ETH_ALEN);
1849         frame->seq_ctrl = 0;
1850
1851         /* fill in our indirect SSID IE */
1852         /* ...next IE... */
1853
1854         left -= 2;
1855         if (left < 0)
1856                 return 0;
1857         len += 2;
1858         pos = &(frame->u.probe_req.variable[0]);
1859         *pos++ = WLAN_EID_SSID;
1860         *pos++ = 0;
1861
1862         /* fill in our direct SSID IE... */
1863         if (is_direct) {
1864                 /* ...next IE... */
1865                 left -= 2 + priv->essid_len;
1866                 if (left < 0)
1867                         return 0;
1868                 /* ... fill it in... */
1869                 *pos++ = WLAN_EID_SSID;
1870                 *pos++ = priv->essid_len;
1871                 memcpy(pos, priv->essid, priv->essid_len);
1872                 pos += priv->essid_len;
1873                 len += 2 + priv->essid_len;
1874         }
1875
1876         /* fill in supported rate */
1877         /* ...next IE... */
1878         left -= 2;
1879         if (left < 0)
1880                 return 0;
1881
1882         /* ... fill it in... */
1883         *pos++ = WLAN_EID_SUPP_RATES;
1884         *pos = 0;
1885
1886         /* exclude 60M rate */
1887         active_rates = priv->rates_mask;
1888         active_rates &= ~IWL_RATE_60M_MASK;
1889
1890         active_rate_basic = active_rates & IWL_BASIC_RATES_MASK;
1891
1892         cck_rates = IWL_CCK_RATES_MASK & active_rates;
1893         ret_rates = iwl4965_supported_rate_to_ie(pos, cck_rates,
1894                         active_rate_basic, &left);
1895         active_rates &= ~ret_rates;
1896
1897         ret_rates = iwl4965_supported_rate_to_ie(pos, active_rates,
1898                                  active_rate_basic, &left);
1899         active_rates &= ~ret_rates;
1900
1901         len += 2 + *pos;
1902         pos += (*pos) + 1;
1903         if (active_rates == 0)
1904                 goto fill_end;
1905
1906         /* fill in supported extended rate */
1907         /* ...next IE... */
1908         left -= 2;
1909         if (left < 0)
1910                 return 0;
1911         /* ... fill it in... */
1912         *pos++ = WLAN_EID_EXT_SUPP_RATES;
1913         *pos = 0;
1914         iwl4965_supported_rate_to_ie(pos, active_rates,
1915                                  active_rate_basic, &left);
1916         if (*pos > 0)
1917                 len += 2 + *pos;
1918
1919 #ifdef CONFIG_IWL4965_HT
1920         if (is_direct && priv->is_ht_enabled) {
1921                 u8 use_wide_chan = 1;
1922
1923                 if (priv->channel_width != IWL_CHANNEL_WIDTH_40MHZ)
1924                         use_wide_chan = 0;
1925                 pos += (*pos) + 1;
1926                 *pos++ = WLAN_EID_HT_CAPABILITY;
1927                 *pos++ = sizeof(struct ieee80211_ht_capability);
1928                 iwl4965_set_ht_capab(NULL, (struct ieee80211_ht_capability *)pos,
1929                                  use_wide_chan);
1930                 len += 2 + sizeof(struct ieee80211_ht_capability);
1931         }
1932 #endif  /*CONFIG_IWL4965_HT */
1933
1934  fill_end:
1935         return (u16)len;
1936 }
1937
1938 /*
1939  * QoS  support
1940 */
1941 #ifdef CONFIG_IWL4965_QOS
1942 static int iwl4965_send_qos_params_command(struct iwl4965_priv *priv,
1943                                        struct iwl4965_qosparam_cmd *qos)
1944 {
1945
1946         return iwl4965_send_cmd_pdu(priv, REPLY_QOS_PARAM,
1947                                 sizeof(struct iwl4965_qosparam_cmd), qos);
1948 }
1949
1950 static void iwl4965_reset_qos(struct iwl4965_priv *priv)
1951 {
1952         u16 cw_min = 15;
1953         u16 cw_max = 1023;
1954         u8 aifs = 2;
1955         u8 is_legacy = 0;
1956         unsigned long flags;
1957         int i;
1958
1959         spin_lock_irqsave(&priv->lock, flags);
1960         priv->qos_data.qos_active = 0;
1961
1962         if (priv->iw_mode == IEEE80211_IF_TYPE_IBSS) {
1963                 if (priv->qos_data.qos_enable)
1964                         priv->qos_data.qos_active = 1;
1965                 if (!(priv->active_rate & 0xfff0)) {
1966                         cw_min = 31;
1967                         is_legacy = 1;
1968                 }
1969         } else if (priv->iw_mode == IEEE80211_IF_TYPE_AP) {
1970                 if (priv->qos_data.qos_enable)
1971                         priv->qos_data.qos_active = 1;
1972         } else if (!(priv->staging_rxon.flags & RXON_FLG_SHORT_SLOT_MSK)) {
1973                 cw_min = 31;
1974                 is_legacy = 1;
1975         }
1976
1977         if (priv->qos_data.qos_active)
1978                 aifs = 3;
1979
1980         priv->qos_data.def_qos_parm.ac[0].cw_min = cpu_to_le16(cw_min);
1981         priv->qos_data.def_qos_parm.ac[0].cw_max = cpu_to_le16(cw_max);
1982         priv->qos_data.def_qos_parm.ac[0].aifsn = aifs;
1983         priv->qos_data.def_qos_parm.ac[0].edca_txop = 0;
1984         priv->qos_data.def_qos_parm.ac[0].reserved1 = 0;
1985
1986         if (priv->qos_data.qos_active) {
1987                 i = 1;
1988                 priv->qos_data.def_qos_parm.ac[i].cw_min = cpu_to_le16(cw_min);
1989                 priv->qos_data.def_qos_parm.ac[i].cw_max = cpu_to_le16(cw_max);
1990                 priv->qos_data.def_qos_parm.ac[i].aifsn = 7;
1991                 priv->qos_data.def_qos_parm.ac[i].edca_txop = 0;
1992                 priv->qos_data.def_qos_parm.ac[i].reserved1 = 0;
1993
1994                 i = 2;
1995                 priv->qos_data.def_qos_parm.ac[i].cw_min =
1996                         cpu_to_le16((cw_min + 1) / 2 - 1);
1997                 priv->qos_data.def_qos_parm.ac[i].cw_max =
1998                         cpu_to_le16(cw_max);
1999                 priv->qos_data.def_qos_parm.ac[i].aifsn = 2;
2000                 if (is_legacy)
2001                         priv->qos_data.def_qos_parm.ac[i].edca_txop =
2002                                 cpu_to_le16(6016);
2003                 else
2004                         priv->qos_data.def_qos_parm.ac[i].edca_txop =
2005                                 cpu_to_le16(3008);
2006                 priv->qos_data.def_qos_parm.ac[i].reserved1 = 0;
2007
2008                 i = 3;
2009                 priv->qos_data.def_qos_parm.ac[i].cw_min =
2010                         cpu_to_le16((cw_min + 1) / 4 - 1);
2011                 priv->qos_data.def_qos_parm.ac[i].cw_max =
2012                         cpu_to_le16((cw_max + 1) / 2 - 1);
2013                 priv->qos_data.def_qos_parm.ac[i].aifsn = 2;
2014                 priv->qos_data.def_qos_parm.ac[i].reserved1 = 0;
2015                 if (is_legacy)
2016                         priv->qos_data.def_qos_parm.ac[i].edca_txop =
2017                                 cpu_to_le16(3264);
2018                 else
2019                         priv->qos_data.def_qos_parm.ac[i].edca_txop =
2020                                 cpu_to_le16(1504);
2021         } else {
2022                 for (i = 1; i < 4; i++) {
2023                         priv->qos_data.def_qos_parm.ac[i].cw_min =
2024                                 cpu_to_le16(cw_min);
2025                         priv->qos_data.def_qos_parm.ac[i].cw_max =
2026                                 cpu_to_le16(cw_max);
2027                         priv->qos_data.def_qos_parm.ac[i].aifsn = aifs;
2028                         priv->qos_data.def_qos_parm.ac[i].edca_txop = 0;
2029                         priv->qos_data.def_qos_parm.ac[i].reserved1 = 0;
2030                 }
2031         }
2032         IWL_DEBUG_QOS("set QoS to default \n");
2033
2034         spin_unlock_irqrestore(&priv->lock, flags);
2035 }
2036
2037 static void iwl4965_activate_qos(struct iwl4965_priv *priv, u8 force)
2038 {
2039         unsigned long flags;
2040
2041         if (test_bit(STATUS_EXIT_PENDING, &priv->status))
2042                 return;
2043
2044         if (!priv->qos_data.qos_enable)
2045                 return;
2046
2047         spin_lock_irqsave(&priv->lock, flags);
2048         priv->qos_data.def_qos_parm.qos_flags = 0;
2049
2050         if (priv->qos_data.qos_cap.q_AP.queue_request &&
2051             !priv->qos_data.qos_cap.q_AP.txop_request)
2052                 priv->qos_data.def_qos_parm.qos_flags |=
2053                         QOS_PARAM_FLG_TXOP_TYPE_MSK;
2054         if (priv->qos_data.qos_active)
2055                 priv->qos_data.def_qos_parm.qos_flags |=
2056                         QOS_PARAM_FLG_UPDATE_EDCA_MSK;
2057
2058 #ifdef CONFIG_IWL4965_HT
2059         if (priv->is_ht_enabled && priv->current_assoc_ht.is_ht)
2060                 priv->qos_data.def_qos_parm.qos_flags |= QOS_PARAM_FLG_TGN_MSK;
2061 #endif /* CONFIG_IWL4965_HT */
2062
2063         spin_unlock_irqrestore(&priv->lock, flags);
2064
2065         if (force || iwl4965_is_associated(priv)) {
2066                 IWL_DEBUG_QOS("send QoS cmd with Qos active=%d FLAGS=0x%X\n",
2067                                 priv->qos_data.qos_active,
2068                                 priv->qos_data.def_qos_parm.qos_flags);
2069
2070                 iwl4965_send_qos_params_command(priv,
2071                                 &(priv->qos_data.def_qos_parm));
2072         }
2073 }
2074
2075 #endif /* CONFIG_IWL4965_QOS */
2076 /*
2077  * Power management (not Tx power!) functions
2078  */
2079 #define MSEC_TO_USEC 1024
2080
2081 #define NOSLP __constant_cpu_to_le16(0), 0, 0
2082 #define SLP IWL_POWER_DRIVER_ALLOW_SLEEP_MSK, 0, 0
2083 #define SLP_TIMEOUT(T) __constant_cpu_to_le32((T) * MSEC_TO_USEC)
2084 #define SLP_VEC(X0, X1, X2, X3, X4) {__constant_cpu_to_le32(X0), \
2085                                      __constant_cpu_to_le32(X1), \
2086                                      __constant_cpu_to_le32(X2), \
2087                                      __constant_cpu_to_le32(X3), \
2088                                      __constant_cpu_to_le32(X4)}
2089
2090
2091 /* default power management (not Tx power) table values */
2092 /* for tim  0-10 */
2093 static struct iwl4965_power_vec_entry range_0[IWL_POWER_AC] = {
2094         {{NOSLP, SLP_TIMEOUT(0), SLP_TIMEOUT(0), SLP_VEC(0, 0, 0, 0, 0)}, 0},
2095         {{SLP, SLP_TIMEOUT(200), SLP_TIMEOUT(500), SLP_VEC(1, 2, 3, 4, 4)}, 0},
2096         {{SLP, SLP_TIMEOUT(200), SLP_TIMEOUT(300), SLP_VEC(2, 4, 6, 7, 7)}, 0},
2097         {{SLP, SLP_TIMEOUT(50), SLP_TIMEOUT(100), SLP_VEC(2, 6, 9, 9, 10)}, 0},
2098         {{SLP, SLP_TIMEOUT(50), SLP_TIMEOUT(25), SLP_VEC(2, 7, 9, 9, 10)}, 1},
2099         {{SLP, SLP_TIMEOUT(25), SLP_TIMEOUT(25), SLP_VEC(4, 7, 10, 10, 10)}, 1}
2100 };
2101
2102 /* for tim > 10 */
2103 static struct iwl4965_power_vec_entry range_1[IWL_POWER_AC] = {
2104         {{NOSLP, SLP_TIMEOUT(0), SLP_TIMEOUT(0), SLP_VEC(0, 0, 0, 0, 0)}, 0},
2105         {{SLP, SLP_TIMEOUT(200), SLP_TIMEOUT(500),
2106                  SLP_VEC(1, 2, 3, 4, 0xFF)}, 0},
2107         {{SLP, SLP_TIMEOUT(200), SLP_TIMEOUT(300),
2108                  SLP_VEC(2, 4, 6, 7, 0xFF)}, 0},
2109         {{SLP, SLP_TIMEOUT(50), SLP_TIMEOUT(100),
2110                  SLP_VEC(2, 6, 9, 9, 0xFF)}, 0},
2111         {{SLP, SLP_TIMEOUT(50), SLP_TIMEOUT(25), SLP_VEC(2, 7, 9, 9, 0xFF)}, 0},
2112         {{SLP, SLP_TIMEOUT(25), SLP_TIMEOUT(25),
2113                  SLP_VEC(4, 7, 10, 10, 0xFF)}, 0}
2114 };
2115
2116 int iwl4965_power_init_handle(struct iwl4965_priv *priv)
2117 {
2118         int rc = 0, i;
2119         struct iwl4965_power_mgr *pow_data;
2120         int size = sizeof(struct iwl4965_power_vec_entry) * IWL_POWER_AC;
2121         u16 pci_pm;
2122
2123         IWL_DEBUG_POWER("Initialize power \n");
2124
2125         pow_data = &(priv->power_data);
2126
2127         memset(pow_data, 0, sizeof(*pow_data));
2128
2129         pow_data->active_index = IWL_POWER_RANGE_0;
2130         pow_data->dtim_val = 0xffff;
2131
2132         memcpy(&pow_data->pwr_range_0[0], &range_0[0], size);
2133         memcpy(&pow_data->pwr_range_1[0], &range_1[0], size);
2134
2135         rc = pci_read_config_word(priv->pci_dev, PCI_LINK_CTRL, &pci_pm);
2136         if (rc != 0)
2137                 return 0;
2138         else {
2139                 struct iwl4965_powertable_cmd *cmd;
2140
2141                 IWL_DEBUG_POWER("adjust power command flags\n");
2142
2143                 for (i = 0; i < IWL_POWER_AC; i++) {
2144                         cmd = &pow_data->pwr_range_0[i].cmd;
2145
2146                         if (pci_pm & 0x1)
2147                                 cmd->flags &= ~IWL_POWER_PCI_PM_MSK;
2148                         else
2149                                 cmd->flags |= IWL_POWER_PCI_PM_MSK;
2150                 }
2151         }
2152         return rc;
2153 }
2154
2155 static int iwl4965_update_power_cmd(struct iwl4965_priv *priv,
2156                                 struct iwl4965_powertable_cmd *cmd, u32 mode)
2157 {
2158         int rc = 0, i;
2159         u8 skip;
2160         u32 max_sleep = 0;
2161         struct iwl4965_power_vec_entry *range;
2162         u8 period = 0;
2163         struct iwl4965_power_mgr *pow_data;
2164
2165         if (mode > IWL_POWER_INDEX_5) {
2166                 IWL_DEBUG_POWER("Error invalid power mode \n");
2167                 return -1;
2168         }
2169         pow_data = &(priv->power_data);
2170
2171         if (pow_data->active_index == IWL_POWER_RANGE_0)
2172                 range = &pow_data->pwr_range_0[0];
2173         else
2174                 range = &pow_data->pwr_range_1[1];
2175
2176         memcpy(cmd, &range[mode].cmd, sizeof(struct iwl4965_powertable_cmd));
2177
2178 #ifdef IWL_MAC80211_DISABLE
2179         if (priv->assoc_network != NULL) {
2180                 unsigned long flags;
2181
2182                 period = priv->assoc_network->tim.tim_period;
2183         }
2184 #endif  /*IWL_MAC80211_DISABLE */
2185         skip = range[mode].no_dtim;
2186
2187         if (period == 0) {
2188                 period = 1;
2189                 skip = 0;
2190         }
2191
2192         if (skip == 0) {
2193                 max_sleep = period;
2194                 cmd->flags &= ~IWL_POWER_SLEEP_OVER_DTIM_MSK;
2195         } else {
2196                 __le32 slp_itrvl = cmd->sleep_interval[IWL_POWER_VEC_SIZE - 1];
2197                 max_sleep = (le32_to_cpu(slp_itrvl) / period) * period;
2198                 cmd->flags |= IWL_POWER_SLEEP_OVER_DTIM_MSK;
2199         }
2200
2201         for (i = 0; i < IWL_POWER_VEC_SIZE; i++) {
2202                 if (le32_to_cpu(cmd->sleep_interval[i]) > max_sleep)
2203                         cmd->sleep_interval[i] = cpu_to_le32(max_sleep);
2204         }
2205
2206         IWL_DEBUG_POWER("Flags value = 0x%08X\n", cmd->flags);
2207         IWL_DEBUG_POWER("Tx timeout = %u\n", le32_to_cpu(cmd->tx_data_timeout));
2208         IWL_DEBUG_POWER("Rx timeout = %u\n", le32_to_cpu(cmd->rx_data_timeout));
2209         IWL_DEBUG_POWER("Sleep interval vector = { %d , %d , %d , %d , %d }\n",
2210                         le32_to_cpu(cmd->sleep_interval[0]),
2211                         le32_to_cpu(cmd->sleep_interval[1]),
2212                         le32_to_cpu(cmd->sleep_interval[2]),
2213                         le32_to_cpu(cmd->sleep_interval[3]),
2214                         le32_to_cpu(cmd->sleep_interval[4]));
2215
2216         return rc;
2217 }
2218
2219 static int iwl4965_send_power_mode(struct iwl4965_priv *priv, u32 mode)
2220 {
2221         u32 uninitialized_var(final_mode);
2222         int rc;
2223         struct iwl4965_powertable_cmd cmd;
2224
2225         /* If on battery, set to 3,
2226          * if plugged into AC power, set to CAM ("continuously aware mode"),
2227          * else user level */
2228         switch (mode) {
2229         case IWL_POWER_BATTERY:
2230                 final_mode = IWL_POWER_INDEX_3;
2231                 break;
2232         case IWL_POWER_AC:
2233                 final_mode = IWL_POWER_MODE_CAM;
2234                 break;
2235         default:
2236                 final_mode = mode;
2237                 break;
2238         }
2239
2240         cmd.keep_alive_beacons = 0;
2241
2242         iwl4965_update_power_cmd(priv, &cmd, final_mode);
2243
2244         rc = iwl4965_send_cmd_pdu(priv, POWER_TABLE_CMD, sizeof(cmd), &cmd);
2245
2246         if (final_mode == IWL_POWER_MODE_CAM)
2247                 clear_bit(STATUS_POWER_PMI, &priv->status);
2248         else
2249                 set_bit(STATUS_POWER_PMI, &priv->status);
2250
2251         return rc;
2252 }
2253
2254 int iwl4965_is_network_packet(struct iwl4965_priv *priv, struct ieee80211_hdr *header)
2255 {
2256         /* Filter incoming packets to determine if they are targeted toward
2257          * this network, discarding packets coming from ourselves */
2258         switch (priv->iw_mode) {
2259         case IEEE80211_IF_TYPE_IBSS: /* Header: Dest. | Source    | BSSID */
2260                 /* packets from our adapter are dropped (echo) */
2261                 if (!compare_ether_addr(header->addr2, priv->mac_addr))
2262                         return 0;
2263                 /* {broad,multi}cast packets to our IBSS go through */
2264                 if (is_multicast_ether_addr(header->addr1))
2265                         return !compare_ether_addr(header->addr3, priv->bssid);
2266                 /* packets to our adapter go through */
2267                 return !compare_ether_addr(header->addr1, priv->mac_addr);
2268         case IEEE80211_IF_TYPE_STA: /* Header: Dest. | AP{BSSID} | Source */
2269                 /* packets from our adapter are dropped (echo) */
2270                 if (!compare_ether_addr(header->addr3, priv->mac_addr))
2271                         return 0;
2272                 /* {broad,multi}cast packets to our BSS go through */
2273                 if (is_multicast_ether_addr(header->addr1))
2274                         return !compare_ether_addr(header->addr2, priv->bssid);
2275                 /* packets to our adapter go through */
2276                 return !compare_ether_addr(header->addr1, priv->mac_addr);
2277         }
2278
2279         return 1;
2280 }
2281
2282 #define TX_STATUS_ENTRY(x) case TX_STATUS_FAIL_ ## x: return #x
2283
2284 static const char *iwl4965_get_tx_fail_reason(u32 status)
2285 {
2286         switch (status & TX_STATUS_MSK) {
2287         case TX_STATUS_SUCCESS:
2288                 return "SUCCESS";
2289                 TX_STATUS_ENTRY(SHORT_LIMIT);
2290                 TX_STATUS_ENTRY(LONG_LIMIT);
2291                 TX_STATUS_ENTRY(FIFO_UNDERRUN);
2292                 TX_STATUS_ENTRY(MGMNT_ABORT);
2293                 TX_STATUS_ENTRY(NEXT_FRAG);
2294                 TX_STATUS_ENTRY(LIFE_EXPIRE);
2295                 TX_STATUS_ENTRY(DEST_PS);
2296                 TX_STATUS_ENTRY(ABORTED);
2297                 TX_STATUS_ENTRY(BT_RETRY);
2298                 TX_STATUS_ENTRY(STA_INVALID);
2299                 TX_STATUS_ENTRY(FRAG_DROPPED);
2300                 TX_STATUS_ENTRY(TID_DISABLE);
2301                 TX_STATUS_ENTRY(FRAME_FLUSHED);
2302                 TX_STATUS_ENTRY(INSUFFICIENT_CF_POLL);
2303                 TX_STATUS_ENTRY(TX_LOCKED);
2304                 TX_STATUS_ENTRY(NO_BEACON_ON_RADAR);
2305         }
2306
2307         return "UNKNOWN";
2308 }
2309
2310 /**
2311  * iwl4965_scan_cancel - Cancel any currently executing HW scan
2312  *
2313  * NOTE: priv->mutex is not required before calling this function
2314  */
2315 static int iwl4965_scan_cancel(struct iwl4965_priv *priv)
2316 {
2317         if (!test_bit(STATUS_SCAN_HW, &priv->status)) {
2318                 clear_bit(STATUS_SCANNING, &priv->status);
2319                 return 0;
2320         }
2321
2322         if (test_bit(STATUS_SCANNING, &priv->status)) {
2323                 if (!test_bit(STATUS_SCAN_ABORTING, &priv->status)) {
2324                         IWL_DEBUG_SCAN("Queuing scan abort.\n");
2325                         set_bit(STATUS_SCAN_ABORTING, &priv->status);
2326                         queue_work(priv->workqueue, &priv->abort_scan);
2327
2328                 } else
2329                         IWL_DEBUG_SCAN("Scan abort already in progress.\n");
2330
2331                 return test_bit(STATUS_SCANNING, &priv->status);
2332         }
2333
2334         return 0;
2335 }
2336
2337 /**
2338  * iwl4965_scan_cancel_timeout - Cancel any currently executing HW scan
2339  * @ms: amount of time to wait (in milliseconds) for scan to abort
2340  *
2341  * NOTE: priv->mutex must be held before calling this function
2342  */
2343 static int iwl4965_scan_cancel_timeout(struct iwl4965_priv *priv, unsigned long ms)
2344 {
2345         unsigned long now = jiffies;
2346         int ret;
2347
2348         ret = iwl4965_scan_cancel(priv);
2349         if (ret && ms) {
2350                 mutex_unlock(&priv->mutex);
2351                 while (!time_after(jiffies, now + msecs_to_jiffies(ms)) &&
2352                                 test_bit(STATUS_SCANNING, &priv->status))
2353                         msleep(1);
2354                 mutex_lock(&priv->mutex);
2355
2356                 return test_bit(STATUS_SCANNING, &priv->status);
2357         }
2358
2359         return ret;
2360 }
2361
2362 static void iwl4965_sequence_reset(struct iwl4965_priv *priv)
2363 {
2364         /* Reset ieee stats */
2365
2366         /* We don't reset the net_device_stats (ieee->stats) on
2367          * re-association */
2368
2369         priv->last_seq_num = -1;
2370         priv->last_frag_num = -1;
2371         priv->last_packet_time = 0;
2372
2373         iwl4965_scan_cancel(priv);
2374 }
2375
2376 #define MAX_UCODE_BEACON_INTERVAL       4096
2377 #define INTEL_CONN_LISTEN_INTERVAL      __constant_cpu_to_le16(0xA)
2378
2379 static __le16 iwl4965_adjust_beacon_interval(u16 beacon_val)
2380 {
2381         u16 new_val = 0;
2382         u16 beacon_factor = 0;
2383
2384         beacon_factor =
2385             (beacon_val + MAX_UCODE_BEACON_INTERVAL)
2386                 / MAX_UCODE_BEACON_INTERVAL;
2387         new_val = beacon_val / beacon_factor;
2388
2389         return cpu_to_le16(new_val);
2390 }
2391
2392 static void iwl4965_setup_rxon_timing(struct iwl4965_priv *priv)
2393 {
2394         u64 interval_tm_unit;
2395         u64 tsf, result;
2396         unsigned long flags;
2397         struct ieee80211_conf *conf = NULL;
2398         u16 beacon_int = 0;
2399
2400         conf = ieee80211_get_hw_conf(priv->hw);
2401
2402         spin_lock_irqsave(&priv->lock, flags);
2403         priv->rxon_timing.timestamp.dw[1] = cpu_to_le32(priv->timestamp1);
2404         priv->rxon_timing.timestamp.dw[0] = cpu_to_le32(priv->timestamp0);
2405
2406         priv->rxon_timing.listen_interval = INTEL_CONN_LISTEN_INTERVAL;
2407
2408         tsf = priv->timestamp1;
2409         tsf = ((tsf << 32) | priv->timestamp0);
2410
2411         beacon_int = priv->beacon_int;
2412         spin_unlock_irqrestore(&priv->lock, flags);
2413
2414         if (priv->iw_mode == IEEE80211_IF_TYPE_STA) {
2415                 if (beacon_int == 0) {
2416                         priv->rxon_timing.beacon_interval = cpu_to_le16(100);
2417                         priv->rxon_timing.beacon_init_val = cpu_to_le32(102400);
2418                 } else {
2419                         priv->rxon_timing.beacon_interval =
2420                                 cpu_to_le16(beacon_int);
2421                         priv->rxon_timing.beacon_interval =
2422                             iwl4965_adjust_beacon_interval(
2423                                 le16_to_cpu(priv->rxon_timing.beacon_interval));
2424                 }
2425
2426                 priv->rxon_timing.atim_window = 0;
2427         } else {
2428                 priv->rxon_timing.beacon_interval =
2429                         iwl4965_adjust_beacon_interval(conf->beacon_int);
2430                 /* TODO: we need to get atim_window from upper stack
2431                  * for now we set to 0 */
2432                 priv->rxon_timing.atim_window = 0;
2433         }
2434
2435         interval_tm_unit =
2436                 (le16_to_cpu(priv->rxon_timing.beacon_interval) * 1024);
2437         result = do_div(tsf, interval_tm_unit);
2438         priv->rxon_timing.beacon_init_val =
2439             cpu_to_le32((u32) ((u64) interval_tm_unit - result));
2440
2441         IWL_DEBUG_ASSOC
2442             ("beacon interval %d beacon timer %d beacon tim %d\n",
2443                 le16_to_cpu(priv->rxon_timing.beacon_interval),
2444                 le32_to_cpu(priv->rxon_timing.beacon_init_val),
2445                 le16_to_cpu(priv->rxon_timing.atim_window));
2446 }
2447
2448 static int iwl4965_scan_initiate(struct iwl4965_priv *priv)
2449 {
2450         if (priv->iw_mode == IEEE80211_IF_TYPE_AP) {
2451                 IWL_ERROR("APs don't scan.\n");
2452                 return 0;
2453         }
2454
2455         if (!iwl4965_is_ready_rf(priv)) {
2456                 IWL_DEBUG_SCAN("Aborting scan due to not ready.\n");
2457                 return -EIO;
2458         }
2459
2460         if (test_bit(STATUS_SCANNING, &priv->status)) {
2461                 IWL_DEBUG_SCAN("Scan already in progress.\n");
2462                 return -EAGAIN;
2463         }
2464
2465         if (test_bit(STATUS_SCAN_ABORTING, &priv->status)) {
2466                 IWL_DEBUG_SCAN("Scan request while abort pending.  "
2467                                "Queuing.\n");
2468                 return -EAGAIN;
2469         }
2470
2471         IWL_DEBUG_INFO("Starting scan...\n");
2472         priv->scan_bands = 2;
2473         set_bit(STATUS_SCANNING, &priv->status);
2474         priv->scan_start = jiffies;
2475         priv->scan_pass_start = priv->scan_start;
2476
2477         queue_work(priv->workqueue, &priv->request_scan);
2478
2479         return 0;
2480 }
2481
2482 static int iwl4965_set_rxon_hwcrypto(struct iwl4965_priv *priv, int hw_decrypt)
2483 {
2484         struct iwl4965_rxon_cmd *rxon = &priv->staging_rxon;
2485
2486         if (hw_decrypt)
2487                 rxon->filter_flags &= ~RXON_FILTER_DIS_DECRYPT_MSK;
2488         else
2489                 rxon->filter_flags |= RXON_FILTER_DIS_DECRYPT_MSK;
2490
2491         return 0;
2492 }
2493
2494 static void iwl4965_set_flags_for_phymode(struct iwl4965_priv *priv, u8 phymode)
2495 {
2496         if (phymode == MODE_IEEE80211A) {
2497                 priv->staging_rxon.flags &=
2498                     ~(RXON_FLG_BAND_24G_MSK | RXON_FLG_AUTO_DETECT_MSK
2499                       | RXON_FLG_CCK_MSK);
2500                 priv->staging_rxon.flags |= RXON_FLG_SHORT_SLOT_MSK;
2501         } else {
2502                 /* Copied from iwl4965_bg_post_associate() */
2503                 if (priv->assoc_capability & WLAN_CAPABILITY_SHORT_SLOT_TIME)
2504                         priv->staging_rxon.flags |= RXON_FLG_SHORT_SLOT_MSK;
2505                 else
2506                         priv->staging_rxon.flags &= ~RXON_FLG_SHORT_SLOT_MSK;
2507
2508                 if (priv->iw_mode == IEEE80211_IF_TYPE_IBSS)
2509                         priv->staging_rxon.flags &= ~RXON_FLG_SHORT_SLOT_MSK;
2510
2511                 priv->staging_rxon.flags |= RXON_FLG_BAND_24G_MSK;
2512                 priv->staging_rxon.flags |= RXON_FLG_AUTO_DETECT_MSK;
2513                 priv->staging_rxon.flags &= ~RXON_FLG_CCK_MSK;
2514         }
2515 }
2516
2517 /*
2518  * initialize rxon structure with default values from eeprom
2519  */
2520 static void iwl4965_connection_init_rx_config(struct iwl4965_priv *priv)
2521 {
2522         const struct iwl4965_channel_info *ch_info;
2523
2524         memset(&priv->staging_rxon, 0, sizeof(priv->staging_rxon));
2525
2526         switch (priv->iw_mode) {
2527         case IEEE80211_IF_TYPE_AP:
2528                 priv->staging_rxon.dev_type = RXON_DEV_TYPE_AP;
2529                 break;
2530
2531         case IEEE80211_IF_TYPE_STA:
2532                 priv->staging_rxon.dev_type = RXON_DEV_TYPE_ESS;
2533                 priv->staging_rxon.filter_flags = RXON_FILTER_ACCEPT_GRP_MSK;
2534                 break;
2535
2536         case IEEE80211_IF_TYPE_IBSS:
2537                 priv->staging_rxon.dev_type = RXON_DEV_TYPE_IBSS;
2538                 priv->staging_rxon.flags = RXON_FLG_SHORT_PREAMBLE_MSK;
2539                 priv->staging_rxon.filter_flags = RXON_FILTER_BCON_AWARE_MSK |
2540                                                   RXON_FILTER_ACCEPT_GRP_MSK;
2541                 break;
2542
2543         case IEEE80211_IF_TYPE_MNTR:
2544                 priv->staging_rxon.dev_type = RXON_DEV_TYPE_SNIFFER;
2545                 priv->staging_rxon.filter_flags = RXON_FILTER_PROMISC_MSK |
2546                     RXON_FILTER_CTL2HOST_MSK | RXON_FILTER_ACCEPT_GRP_MSK;
2547                 break;
2548         }
2549
2550 #if 0
2551         /* TODO:  Figure out when short_preamble would be set and cache from
2552          * that */
2553         if (!hw_to_local(priv->hw)->short_preamble)
2554                 priv->staging_rxon.flags &= ~RXON_FLG_SHORT_PREAMBLE_MSK;
2555         else
2556                 priv->staging_rxon.flags |= RXON_FLG_SHORT_PREAMBLE_MSK;
2557 #endif
2558
2559         ch_info = iwl4965_get_channel_info(priv, priv->phymode,
2560                                        le16_to_cpu(priv->staging_rxon.channel));
2561
2562         if (!ch_info)
2563                 ch_info = &priv->channel_info[0];
2564
2565         /*
2566          * in some case A channels are all non IBSS
2567          * in this case force B/G channel
2568          */
2569         if ((priv->iw_mode == IEEE80211_IF_TYPE_IBSS) &&
2570             !(is_channel_ibss(ch_info)))
2571                 ch_info = &priv->channel_info[0];
2572
2573         priv->staging_rxon.channel = cpu_to_le16(ch_info->channel);
2574         if (is_channel_a_band(ch_info))
2575                 priv->phymode = MODE_IEEE80211A;
2576         else
2577                 priv->phymode = MODE_IEEE80211G;
2578
2579         iwl4965_set_flags_for_phymode(priv, priv->phymode);
2580
2581         priv->staging_rxon.ofdm_basic_rates =
2582             (IWL_OFDM_RATES_MASK >> IWL_FIRST_OFDM_RATE) & 0xFF;
2583         priv->staging_rxon.cck_basic_rates =
2584             (IWL_CCK_RATES_MASK >> IWL_FIRST_CCK_RATE) & 0xF;
2585
2586         priv->staging_rxon.flags &= ~(RXON_FLG_CHANNEL_MODE_MIXED_MSK |
2587                                         RXON_FLG_CHANNEL_MODE_PURE_40_MSK);
2588         memcpy(priv->staging_rxon.node_addr, priv->mac_addr, ETH_ALEN);
2589         memcpy(priv->staging_rxon.wlap_bssid_addr, priv->mac_addr, ETH_ALEN);
2590         priv->staging_rxon.ofdm_ht_single_stream_basic_rates = 0xff;
2591         priv->staging_rxon.ofdm_ht_dual_stream_basic_rates = 0xff;
2592         iwl4965_set_rxon_chain(priv);
2593 }
2594
2595 static int iwl4965_set_mode(struct iwl4965_priv *priv, int mode)
2596 {
2597         if (!iwl4965_is_ready_rf(priv))
2598                 return -EAGAIN;
2599
2600         if (mode == IEEE80211_IF_TYPE_IBSS) {
2601                 const struct iwl4965_channel_info *ch_info;
2602
2603                 ch_info = iwl4965_get_channel_info(priv,
2604                         priv->phymode,
2605                         le16_to_cpu(priv->staging_rxon.channel));
2606
2607                 if (!ch_info || !is_channel_ibss(ch_info)) {
2608                         IWL_ERROR("channel %d not IBSS channel\n",
2609                                   le16_to_cpu(priv->staging_rxon.channel));
2610                         return -EINVAL;
2611                 }
2612         }
2613
2614         cancel_delayed_work(&priv->scan_check);
2615         if (iwl4965_scan_cancel_timeout(priv, 100)) {
2616                 IWL_WARNING("Aborted scan still in progress after 100ms\n");
2617                 IWL_DEBUG_MAC80211("leaving - scan abort failed.\n");
2618                 return -EAGAIN;
2619         }
2620
2621         priv->iw_mode = mode;
2622
2623         iwl4965_connection_init_rx_config(priv);
2624         memcpy(priv->staging_rxon.node_addr, priv->mac_addr, ETH_ALEN);
2625
2626         iwl4965_clear_stations_table(priv);
2627
2628         iwl4965_commit_rxon(priv);
2629
2630         return 0;
2631 }
2632
2633 static void iwl4965_build_tx_cmd_hwcrypto(struct iwl4965_priv *priv,
2634                                       struct ieee80211_tx_control *ctl,
2635                                       struct iwl4965_cmd *cmd,
2636                                       struct sk_buff *skb_frag,
2637                                       int last_frag)
2638 {
2639         struct iwl4965_hw_key *keyinfo = &priv->stations[ctl->key_idx].keyinfo;
2640
2641         switch (keyinfo->alg) {
2642         case ALG_CCMP:
2643                 cmd->cmd.tx.sec_ctl = TX_CMD_SEC_CCM;
2644                 memcpy(cmd->cmd.tx.key, keyinfo->key, keyinfo->keylen);
2645                 IWL_DEBUG_TX("tx_cmd with aes hwcrypto\n");
2646                 break;
2647
2648         case ALG_TKIP:
2649 #if 0
2650                 cmd->cmd.tx.sec_ctl = TX_CMD_SEC_TKIP;
2651
2652                 if (last_frag)
2653                         memcpy(cmd->cmd.tx.tkip_mic.byte, skb_frag->tail - 8,
2654                                8);
2655                 else
2656                         memset(cmd->cmd.tx.tkip_mic.byte, 0, 8);
2657 #endif
2658                 break;
2659
2660         case ALG_WEP:
2661                 cmd->cmd.tx.sec_ctl = TX_CMD_SEC_WEP |
2662                         (ctl->key_idx & TX_CMD_SEC_MSK) << TX_CMD_SEC_SHIFT;
2663
2664                 if (keyinfo->keylen == 13)
2665                         cmd->cmd.tx.sec_ctl |= TX_CMD_SEC_KEY128;
2666
2667                 memcpy(&cmd->cmd.tx.key[3], keyinfo->key, keyinfo->keylen);
2668
2669                 IWL_DEBUG_TX("Configuring packet for WEP encryption "
2670                              "with key %d\n", ctl->key_idx);
2671                 break;
2672
2673         default:
2674                 printk(KERN_ERR "Unknown encode alg %d\n", keyinfo->alg);
2675                 break;
2676         }
2677 }
2678
2679 /*
2680  * handle build REPLY_TX command notification.
2681  */
2682 static void iwl4965_build_tx_cmd_basic(struct iwl4965_priv *priv,
2683                                   struct iwl4965_cmd *cmd,
2684                                   struct ieee80211_tx_control *ctrl,
2685                                   struct ieee80211_hdr *hdr,
2686                                   int is_unicast, u8 std_id)
2687 {
2688         __le16 *qc;
2689         u16 fc = le16_to_cpu(hdr->frame_control);
2690         __le32 tx_flags = cmd->cmd.tx.tx_flags;
2691
2692         cmd->cmd.tx.stop_time.life_time = TX_CMD_LIFE_TIME_INFINITE;
2693         if (!(ctrl->flags & IEEE80211_TXCTL_NO_ACK)) {
2694                 tx_flags |= TX_CMD_FLG_ACK_MSK;
2695                 if ((fc & IEEE80211_FCTL_FTYPE) == IEEE80211_FTYPE_MGMT)
2696                         tx_flags |= TX_CMD_FLG_SEQ_CTL_MSK;
2697                 if (ieee80211_is_probe_response(fc) &&
2698                     !(le16_to_cpu(hdr->seq_ctrl) & 0xf))
2699                         tx_flags |= TX_CMD_FLG_TSF_MSK;
2700         } else {
2701                 tx_flags &= (~TX_CMD_FLG_ACK_MSK);
2702                 tx_flags |= TX_CMD_FLG_SEQ_CTL_MSK;
2703         }
2704
2705         cmd->cmd.tx.sta_id = std_id;
2706         if (ieee80211_get_morefrag(hdr))
2707                 tx_flags |= TX_CMD_FLG_MORE_FRAG_MSK;
2708
2709         qc = ieee80211_get_qos_ctrl(hdr);
2710         if (qc) {
2711                 cmd->cmd.tx.tid_tspec = (u8) (le16_to_cpu(*qc) & 0xf);
2712                 tx_flags &= ~TX_CMD_FLG_SEQ_CTL_MSK;
2713         } else
2714                 tx_flags |= TX_CMD_FLG_SEQ_CTL_MSK;
2715
2716         if (ctrl->flags & IEEE80211_TXCTL_USE_RTS_CTS) {
2717                 tx_flags |= TX_CMD_FLG_RTS_MSK;
2718                 tx_flags &= ~TX_CMD_FLG_CTS_MSK;
2719         } else if (ctrl->flags & IEEE80211_TXCTL_USE_CTS_PROTECT) {
2720                 tx_flags &= ~TX_CMD_FLG_RTS_MSK;
2721                 tx_flags |= TX_CMD_FLG_CTS_MSK;
2722         }
2723
2724         if ((tx_flags & TX_CMD_FLG_RTS_MSK) || (tx_flags & TX_CMD_FLG_CTS_MSK))
2725                 tx_flags |= TX_CMD_FLG_FULL_TXOP_PROT_MSK;
2726
2727         tx_flags &= ~(TX_CMD_FLG_ANT_SEL_MSK);
2728         if ((fc & IEEE80211_FCTL_FTYPE) == IEEE80211_FTYPE_MGMT) {
2729                 if ((fc & IEEE80211_FCTL_STYPE) == IEEE80211_STYPE_ASSOC_REQ ||
2730                     (fc & IEEE80211_FCTL_STYPE) == IEEE80211_STYPE_REASSOC_REQ)
2731                         cmd->cmd.tx.timeout.pm_frame_timeout = cpu_to_le16(3);
2732                 else
2733                         cmd->cmd.tx.timeout.pm_frame_timeout = cpu_to_le16(2);
2734         } else
2735                 cmd->cmd.tx.timeout.pm_frame_timeout = 0;
2736
2737         cmd->cmd.tx.driver_txop = 0;
2738         cmd->cmd.tx.tx_flags = tx_flags;
2739         cmd->cmd.tx.next_frame_len = 0;
2740 }
2741
2742 static int iwl4965_get_sta_id(struct iwl4965_priv *priv, struct ieee80211_hdr *hdr)
2743 {
2744         int sta_id;
2745         u16 fc = le16_to_cpu(hdr->frame_control);
2746         DECLARE_MAC_BUF(mac);
2747
2748         /* If this frame is broadcast or not data then use the broadcast
2749          * station id */
2750         if (((fc & IEEE80211_FCTL_FTYPE) != IEEE80211_FTYPE_DATA) ||
2751             is_multicast_ether_addr(hdr->addr1))
2752                 return priv->hw_setting.bcast_sta_id;
2753
2754         switch (priv->iw_mode) {
2755
2756         /* If this frame is part of a BSS network (we're a station), then
2757          * we use the AP's station id */
2758         case IEEE80211_IF_TYPE_STA:
2759                 return IWL_AP_ID;
2760
2761         /* If we are an AP, then find the station, or use BCAST */
2762         case IEEE80211_IF_TYPE_AP:
2763                 sta_id = iwl4965_hw_find_station(priv, hdr->addr1);
2764                 if (sta_id != IWL_INVALID_STATION)
2765                         return sta_id;
2766                 return priv->hw_setting.bcast_sta_id;
2767
2768         /* If this frame is part of a IBSS network, then we use the
2769          * target specific station id */
2770         case IEEE80211_IF_TYPE_IBSS:
2771                 sta_id = iwl4965_hw_find_station(priv, hdr->addr1);
2772                 if (sta_id != IWL_INVALID_STATION)
2773                         return sta_id;
2774
2775                 sta_id = iwl4965_add_station_flags(priv, hdr->addr1, 0, CMD_ASYNC);
2776
2777                 if (sta_id != IWL_INVALID_STATION)
2778                         return sta_id;
2779
2780                 IWL_DEBUG_DROP("Station %s not in station map. "
2781                                "Defaulting to broadcast...\n",
2782                                print_mac(mac, hdr->addr1));
2783                 iwl4965_print_hex_dump(IWL_DL_DROP, (u8 *) hdr, sizeof(*hdr));
2784                 return priv->hw_setting.bcast_sta_id;
2785
2786         default:
2787                 IWL_WARNING("Unknown mode of operation: %d", priv->iw_mode);
2788                 return priv->hw_setting.bcast_sta_id;
2789         }
2790 }
2791
2792 /*
2793  * start REPLY_TX command process
2794  */
2795 static int iwl4965_tx_skb(struct iwl4965_priv *priv,
2796                       struct sk_buff *skb, struct ieee80211_tx_control *ctl)
2797 {
2798         struct ieee80211_hdr *hdr = (struct ieee80211_hdr *)skb->data;
2799         struct iwl4965_tfd_frame *tfd;
2800         u32 *control_flags;
2801         int txq_id = ctl->queue;
2802         struct iwl4965_tx_queue *txq = NULL;
2803         struct iwl4965_queue *q = NULL;
2804         dma_addr_t phys_addr;
2805         dma_addr_t txcmd_phys;
2806         struct iwl4965_cmd *out_cmd = NULL;
2807         u16 len, idx, len_org;
2808         u8 id, hdr_len, unicast;
2809         u8 sta_id;
2810         u16 seq_number = 0;
2811         u16 fc;
2812         __le16 *qc;
2813         u8 wait_write_ptr = 0;
2814         unsigned long flags;
2815         int rc;
2816
2817         spin_lock_irqsave(&priv->lock, flags);
2818         if (iwl4965_is_rfkill(priv)) {
2819                 IWL_DEBUG_DROP("Dropping - RF KILL\n");
2820                 goto drop_unlock;
2821         }
2822
2823         if (!priv->interface_id) {
2824                 IWL_DEBUG_DROP("Dropping - !priv->interface_id\n");
2825                 goto drop_unlock;
2826         }
2827
2828         if ((ctl->tx_rate & 0xFF) == IWL_INVALID_RATE) {
2829                 IWL_ERROR("ERROR: No TX rate available.\n");
2830                 goto drop_unlock;
2831         }
2832
2833         unicast = !is_multicast_ether_addr(hdr->addr1);
2834         id = 0;
2835
2836         fc = le16_to_cpu(hdr->frame_control);
2837
2838 #ifdef CONFIG_IWL4965_DEBUG
2839         if (ieee80211_is_auth(fc))
2840                 IWL_DEBUG_TX("Sending AUTH frame\n");
2841         else if (ieee80211_is_assoc_request(fc))
2842                 IWL_DEBUG_TX("Sending ASSOC frame\n");
2843         else if (ieee80211_is_reassoc_request(fc))
2844                 IWL_DEBUG_TX("Sending REASSOC frame\n");
2845 #endif
2846
2847         if (!iwl4965_is_associated(priv) &&
2848             ((fc & IEEE80211_FCTL_FTYPE) == IEEE80211_FTYPE_DATA)) {
2849                 IWL_DEBUG_DROP("Dropping - !iwl4965_is_associated\n");
2850                 goto drop_unlock;
2851         }
2852
2853         spin_unlock_irqrestore(&priv->lock, flags);
2854
2855         hdr_len = ieee80211_get_hdrlen(fc);
2856         sta_id = iwl4965_get_sta_id(priv, hdr);
2857         if (sta_id == IWL_INVALID_STATION) {
2858                 DECLARE_MAC_BUF(mac);
2859
2860                 IWL_DEBUG_DROP("Dropping - INVALID STATION: %s\n",
2861                                print_mac(mac, hdr->addr1));
2862                 goto drop;
2863         }
2864
2865         IWL_DEBUG_RATE("station Id %d\n", sta_id);
2866
2867         qc = ieee80211_get_qos_ctrl(hdr);
2868         if (qc) {
2869                 u8 tid = (u8)(le16_to_cpu(*qc) & 0xf);
2870                 seq_number = priv->stations[sta_id].tid[tid].seq_number &
2871                                 IEEE80211_SCTL_SEQ;
2872                 hdr->seq_ctrl = cpu_to_le16(seq_number) |
2873                         (hdr->seq_ctrl &
2874                                 __constant_cpu_to_le16(IEEE80211_SCTL_FRAG));
2875                 seq_number += 0x10;
2876 #ifdef CONFIG_IWL4965_HT
2877 #ifdef CONFIG_IWL4965_HT_AGG
2878                 /* aggregation is on for this <sta,tid> */
2879                 if (ctl->flags & IEEE80211_TXCTL_HT_MPDU_AGG)
2880                         txq_id = priv->stations[sta_id].tid[tid].agg.txq_id;
2881 #endif /* CONFIG_IWL4965_HT_AGG */
2882 #endif /* CONFIG_IWL4965_HT */
2883         }
2884         txq = &priv->txq[txq_id];
2885         q = &txq->q;
2886
2887         spin_lock_irqsave(&priv->lock, flags);
2888
2889         tfd = &txq->bd[q->write_ptr];
2890         memset(tfd, 0, sizeof(*tfd));
2891         control_flags = (u32 *) tfd;
2892         idx = get_cmd_index(q, q->write_ptr, 0);
2893
2894         memset(&(txq->txb[q->write_ptr]), 0, sizeof(struct iwl4965_tx_info));
2895         txq->txb[q->write_ptr].skb[0] = skb;
2896         memcpy(&(txq->txb[q->write_ptr].status.control),
2897                ctl, sizeof(struct ieee80211_tx_control));
2898         out_cmd = &txq->cmd[idx];
2899         memset(&out_cmd->hdr, 0, sizeof(out_cmd->hdr));
2900         memset(&out_cmd->cmd.tx, 0, sizeof(out_cmd->cmd.tx));
2901         out_cmd->hdr.cmd = REPLY_TX;
2902         out_cmd->hdr.sequence = cpu_to_le16((u16)(QUEUE_TO_SEQ(txq_id) |
2903                                 INDEX_TO_SEQ(q->write_ptr)));
2904         /* copy frags header */
2905         memcpy(out_cmd->cmd.tx.hdr, hdr, hdr_len);
2906
2907         /* hdr = (struct ieee80211_hdr *)out_cmd->cmd.tx.hdr; */
2908         len = priv->hw_setting.tx_cmd_len +
2909                 sizeof(struct iwl4965_cmd_header) + hdr_len;
2910
2911         len_org = len;
2912         len = (len + 3) & ~3;
2913
2914         if (len_org != len)
2915                 len_org = 1;
2916         else
2917                 len_org = 0;
2918
2919         txcmd_phys = txq->dma_addr_cmd + sizeof(struct iwl4965_cmd) * idx +
2920                      offsetof(struct iwl4965_cmd, hdr);
2921
2922         iwl4965_hw_txq_attach_buf_to_tfd(priv, tfd, txcmd_phys, len);
2923
2924         if (!(ctl->flags & IEEE80211_TXCTL_DO_NOT_ENCRYPT))
2925                 iwl4965_build_tx_cmd_hwcrypto(priv, ctl, out_cmd, skb, 0);
2926
2927         /* 802.11 null functions have no payload... */
2928         len = skb->len - hdr_len;
2929         if (len) {
2930                 phys_addr = pci_map_single(priv->pci_dev, skb->data + hdr_len,
2931                                            len, PCI_DMA_TODEVICE);
2932                 iwl4965_hw_txq_attach_buf_to_tfd(priv, tfd, phys_addr, len);
2933         }
2934
2935         if (len_org)
2936                 out_cmd->cmd.tx.tx_flags |= TX_CMD_FLG_MH_PAD_MSK;
2937
2938         len = (u16)skb->len;
2939         out_cmd->cmd.tx.len = cpu_to_le16(len);
2940
2941         /* TODO need this for burst mode later on */
2942         iwl4965_build_tx_cmd_basic(priv, out_cmd, ctl, hdr, unicast, sta_id);
2943
2944         /* set is_hcca to 0; it probably will never be implemented */
2945         iwl4965_hw_build_tx_cmd_rate(priv, out_cmd, ctl, hdr, sta_id, 0);
2946
2947         iwl4965_tx_cmd(priv, out_cmd, sta_id, txcmd_phys,
2948                        hdr, hdr_len, ctl, NULL);
2949
2950         if (!ieee80211_get_morefrag(hdr)) {
2951                 txq->need_update = 1;
2952                 if (qc) {
2953                         u8 tid = (u8)(le16_to_cpu(*qc) & 0xf);
2954                         priv->stations[sta_id].tid[tid].seq_number = seq_number;
2955                 }
2956         } else {
2957                 wait_write_ptr = 1;
2958                 txq->need_update = 0;
2959         }
2960
2961         iwl4965_print_hex_dump(IWL_DL_TX, out_cmd->cmd.payload,
2962                            sizeof(out_cmd->cmd.tx));
2963
2964         iwl4965_print_hex_dump(IWL_DL_TX, (u8 *)out_cmd->cmd.tx.hdr,
2965                            ieee80211_get_hdrlen(fc));
2966
2967         iwl4965_tx_queue_update_wr_ptr(priv, txq, len);
2968
2969         q->write_ptr = iwl4965_queue_inc_wrap(q->write_ptr, q->n_bd);
2970         rc = iwl4965_tx_queue_update_write_ptr(priv, txq);
2971         spin_unlock_irqrestore(&priv->lock, flags);
2972
2973         if (rc)
2974                 return rc;
2975
2976         if ((iwl4965_queue_space(q) < q->high_mark)
2977             && priv->mac80211_registered) {
2978                 if (wait_write_ptr) {
2979                         spin_lock_irqsave(&priv->lock, flags);
2980                         txq->need_update = 1;
2981                         iwl4965_tx_queue_update_write_ptr(priv, txq);
2982                         spin_unlock_irqrestore(&priv->lock, flags);
2983                 }
2984
2985                 ieee80211_stop_queue(priv->hw, ctl->queue);
2986         }
2987
2988         return 0;
2989
2990 drop_unlock:
2991         spin_unlock_irqrestore(&priv->lock, flags);
2992 drop:
2993         return -1;
2994 }
2995
2996 static void iwl4965_set_rate(struct iwl4965_priv *priv)
2997 {
2998         const struct ieee80211_hw_mode *hw = NULL;
2999         struct ieee80211_rate *rate;
3000         int i;
3001
3002         hw = iwl4965_get_hw_mode(priv, priv->phymode);
3003         if (!hw) {
3004                 IWL_ERROR("Failed to set rate: unable to get hw mode\n");
3005                 return;
3006         }
3007
3008         priv->active_rate = 0;
3009         priv->active_rate_basic = 0;
3010
3011         IWL_DEBUG_RATE("Setting rates for 802.11%c\n",
3012                        hw->mode == MODE_IEEE80211A ?
3013                        'a' : ((hw->mode == MODE_IEEE80211B) ? 'b' : 'g'));
3014
3015         for (i = 0; i < hw->num_rates; i++) {
3016                 rate = &(hw->rates[i]);
3017                 if ((rate->val < IWL_RATE_COUNT) &&
3018                     (rate->flags & IEEE80211_RATE_SUPPORTED)) {
3019                         IWL_DEBUG_RATE("Adding rate index %d (plcp %d)%s\n",
3020                                        rate->val, iwl4965_rates[rate->val].plcp,
3021                                        (rate->flags & IEEE80211_RATE_BASIC) ?
3022                                        "*" : "");
3023                         priv->active_rate |= (1 << rate->val);
3024                         if (rate->flags & IEEE80211_RATE_BASIC)
3025                                 priv->active_rate_basic |= (1 << rate->val);
3026                 } else
3027                         IWL_DEBUG_RATE("Not adding rate %d (plcp %d)\n",
3028                                        rate->val, iwl4965_rates[rate->val].plcp);
3029         }
3030
3031         IWL_DEBUG_RATE("Set active_rate = %0x, active_rate_basic = %0x\n",
3032                        priv->active_rate, priv->active_rate_basic);
3033
3034         /*
3035          * If a basic rate is configured, then use it (adding IWL_RATE_1M_MASK)
3036          * otherwise set it to the default of all CCK rates and 6, 12, 24 for
3037          * OFDM
3038          */
3039         if (priv->active_rate_basic & IWL_CCK_BASIC_RATES_MASK)
3040                 priv->staging_rxon.cck_basic_rates =
3041                     ((priv->active_rate_basic &
3042                       IWL_CCK_RATES_MASK) >> IWL_FIRST_CCK_RATE) & 0xF;
3043         else
3044                 priv->staging_rxon.cck_basic_rates =
3045                     (IWL_CCK_BASIC_RATES_MASK >> IWL_FIRST_CCK_RATE) & 0xF;
3046
3047         if (priv->active_rate_basic & IWL_OFDM_BASIC_RATES_MASK)
3048                 priv->staging_rxon.ofdm_basic_rates =
3049                     ((priv->active_rate_basic &
3050                       (IWL_OFDM_BASIC_RATES_MASK | IWL_RATE_6M_MASK)) >>
3051                       IWL_FIRST_OFDM_RATE) & 0xFF;
3052         else
3053                 priv->staging_rxon.ofdm_basic_rates =
3054                    (IWL_OFDM_BASIC_RATES_MASK >> IWL_FIRST_OFDM_RATE) & 0xFF;
3055 }
3056
3057 static void iwl4965_radio_kill_sw(struct iwl4965_priv *priv, int disable_radio)
3058 {
3059         unsigned long flags;
3060
3061         if (!!disable_radio == test_bit(STATUS_RF_KILL_SW, &priv->status))
3062                 return;
3063
3064         IWL_DEBUG_RF_KILL("Manual SW RF KILL set to: RADIO %s\n",
3065                           disable_radio ? "OFF" : "ON");
3066
3067         if (disable_radio) {
3068                 iwl4965_scan_cancel(priv);
3069                 /* FIXME: This is a workaround for AP */
3070                 if (priv->iw_mode != IEEE80211_IF_TYPE_AP) {
3071                         spin_lock_irqsave(&priv->lock, flags);
3072                         iwl4965_write32(priv, CSR_UCODE_DRV_GP1_SET,
3073                                     CSR_UCODE_SW_BIT_RFKILL);
3074                         spin_unlock_irqrestore(&priv->lock, flags);
3075                         iwl4965_send_card_state(priv, CARD_STATE_CMD_DISABLE, 0);
3076                         set_bit(STATUS_RF_KILL_SW, &priv->status);
3077                 }
3078                 return;
3079         }
3080
3081         spin_lock_irqsave(&priv->lock, flags);
3082         iwl4965_write32(priv, CSR_UCODE_DRV_GP1_CLR, CSR_UCODE_SW_BIT_RFKILL);
3083
3084         clear_bit(STATUS_RF_KILL_SW, &priv->status);
3085         spin_unlock_irqrestore(&priv->lock, flags);
3086
3087         /* wake up ucode */
3088         msleep(10);
3089
3090         spin_lock_irqsave(&priv->lock, flags);
3091         iwl4965_read32(priv, CSR_UCODE_DRV_GP1);
3092         if (!iwl4965_grab_nic_access(priv))
3093                 iwl4965_release_nic_access(priv);
3094         spin_unlock_irqrestore(&priv->lock, flags);
3095
3096         if (test_bit(STATUS_RF_KILL_HW, &priv->status)) {
3097                 IWL_DEBUG_RF_KILL("Can not turn radio back on - "
3098                                   "disabled by HW switch\n");
3099                 return;
3100         }
3101
3102         queue_work(priv->workqueue, &priv->restart);
3103         return;
3104 }
3105
3106 void iwl4965_set_decrypted_flag(struct iwl4965_priv *priv, struct sk_buff *skb,
3107                             u32 decrypt_res, struct ieee80211_rx_status *stats)
3108 {
3109         u16 fc =
3110             le16_to_cpu(((struct ieee80211_hdr *)skb->data)->frame_control);
3111
3112         if (priv->active_rxon.filter_flags & RXON_FILTER_DIS_DECRYPT_MSK)
3113                 return;
3114
3115         if (!(fc & IEEE80211_FCTL_PROTECTED))
3116                 return;
3117
3118         IWL_DEBUG_RX("decrypt_res:0x%x\n", decrypt_res);
3119         switch (decrypt_res & RX_RES_STATUS_SEC_TYPE_MSK) {
3120         case RX_RES_STATUS_SEC_TYPE_TKIP:
3121                 if ((decrypt_res & RX_RES_STATUS_DECRYPT_TYPE_MSK) ==
3122                     RX_RES_STATUS_BAD_ICV_MIC)
3123                         stats->flag |= RX_FLAG_MMIC_ERROR;
3124         case RX_RES_STATUS_SEC_TYPE_WEP:
3125         case RX_RES_STATUS_SEC_TYPE_CCMP:
3126                 if ((decrypt_res & RX_RES_STATUS_DECRYPT_TYPE_MSK) ==
3127                     RX_RES_STATUS_DECRYPT_OK) {
3128                         IWL_DEBUG_RX("hw decrypt successfully!!!\n");
3129                         stats->flag |= RX_FLAG_DECRYPTED;
3130                 }
3131                 break;
3132
3133         default:
3134                 break;
3135         }
3136 }
3137
3138 void iwl4965_handle_data_packet_monitor(struct iwl4965_priv *priv,
3139                                     struct iwl4965_rx_mem_buffer *rxb,
3140                                     void *data, short len,
3141                                     struct ieee80211_rx_status *stats,
3142                                     u16 phy_flags)
3143 {
3144         struct iwl4965_rt_rx_hdr *iwl4965_rt;
3145
3146         /* First cache any information we need before we overwrite
3147          * the information provided in the skb from the hardware */
3148         s8 signal = stats->ssi;
3149         s8 noise = 0;
3150         int rate = stats->rate;
3151         u64 tsf = stats->mactime;
3152         __le16 phy_flags_hw = cpu_to_le16(phy_flags);
3153
3154         /* We received data from the HW, so stop the watchdog */
3155         if (len > IWL_RX_BUF_SIZE - sizeof(*iwl4965_rt)) {
3156                 IWL_DEBUG_DROP("Dropping too large packet in monitor\n");
3157                 return;
3158         }
3159
3160         /* copy the frame data to write after where the radiotap header goes */
3161         iwl4965_rt = (void *)rxb->skb->data;
3162         memmove(iwl4965_rt->payload, data, len);
3163
3164         iwl4965_rt->rt_hdr.it_version = PKTHDR_RADIOTAP_VERSION;
3165         iwl4965_rt->rt_hdr.it_pad = 0; /* always good to zero */
3166
3167         /* total header + data */
3168         iwl4965_rt->rt_hdr.it_len = cpu_to_le16(sizeof(*iwl4965_rt));
3169
3170         /* Set the size of the skb to the size of the frame */
3171         skb_put(rxb->skb, sizeof(*iwl4965_rt) + len);
3172
3173         /* Big bitfield of all the fields we provide in radiotap */
3174         iwl4965_rt->rt_hdr.it_present =
3175             cpu_to_le32((1 << IEEE80211_RADIOTAP_TSFT) |
3176                         (1 << IEEE80211_RADIOTAP_FLAGS) |
3177                         (1 << IEEE80211_RADIOTAP_RATE) |
3178                         (1 << IEEE80211_RADIOTAP_CHANNEL) |
3179                         (1 << IEEE80211_RADIOTAP_DBM_ANTSIGNAL) |
3180                         (1 << IEEE80211_RADIOTAP_DBM_ANTNOISE) |
3181                         (1 << IEEE80211_RADIOTAP_ANTENNA));
3182
3183         /* Zero the flags, we'll add to them as we go */
3184         iwl4965_rt->rt_flags = 0;
3185
3186         iwl4965_rt->rt_tsf = cpu_to_le64(tsf);
3187
3188         /* Convert to dBm */
3189         iwl4965_rt->rt_dbmsignal = signal;
3190         iwl4965_rt->rt_dbmnoise = noise;
3191
3192         /* Convert the channel frequency and set the flags */
3193         iwl4965_rt->rt_channelMHz = cpu_to_le16(stats->freq);
3194         if (!(phy_flags_hw & RX_RES_PHY_FLAGS_BAND_24_MSK))
3195                 iwl4965_rt->rt_chbitmask =
3196                     cpu_to_le16((IEEE80211_CHAN_OFDM | IEEE80211_CHAN_5GHZ));
3197         else if (phy_flags_hw & RX_RES_PHY_FLAGS_MOD_CCK_MSK)
3198                 iwl4965_rt->rt_chbitmask =
3199                     cpu_to_le16((IEEE80211_CHAN_CCK | IEEE80211_CHAN_2GHZ));
3200         else    /* 802.11g */
3201                 iwl4965_rt->rt_chbitmask =
3202                     cpu_to_le16((IEEE80211_CHAN_OFDM | IEEE80211_CHAN_2GHZ));
3203
3204         rate = iwl4965_rate_index_from_plcp(rate);
3205         if (rate == -1)
3206                 iwl4965_rt->rt_rate = 0;
3207         else
3208                 iwl4965_rt->rt_rate = iwl4965_rates[rate].ieee;
3209
3210         /* antenna number */
3211         iwl4965_rt->rt_antenna =
3212                 le16_to_cpu(phy_flags_hw & RX_RES_PHY_FLAGS_ANTENNA_MSK) >> 4;
3213
3214         /* set the preamble flag if we have it */
3215         if (phy_flags_hw & RX_RES_PHY_FLAGS_SHORT_PREAMBLE_MSK)
3216                 iwl4965_rt->rt_flags |= IEEE80211_RADIOTAP_F_SHORTPRE;
3217
3218         IWL_DEBUG_RX("Rx packet of %d bytes.\n", rxb->skb->len);
3219
3220         stats->flag |= RX_FLAG_RADIOTAP;
3221         ieee80211_rx_irqsafe(priv->hw, rxb->skb, stats);
3222         rxb->skb = NULL;
3223 }
3224
3225
3226 #define IWL_PACKET_RETRY_TIME HZ
3227
3228 int iwl4965_is_duplicate_packet(struct iwl4965_priv *priv, struct ieee80211_hdr *header)
3229 {
3230         u16 sc = le16_to_cpu(header->seq_ctrl);
3231         u16 seq = (sc & IEEE80211_SCTL_SEQ) >> 4;
3232         u16 frag = sc & IEEE80211_SCTL_FRAG;
3233         u16 *last_seq, *last_frag;
3234         unsigned long *last_time;
3235
3236         switch (priv->iw_mode) {
3237         case IEEE80211_IF_TYPE_IBSS:{
3238                 struct list_head *p;
3239                 struct iwl4965_ibss_seq *entry = NULL;
3240                 u8 *mac = header->addr2;
3241                 int index = mac[5] & (IWL_IBSS_MAC_HASH_SIZE - 1);
3242
3243                 __list_for_each(p, &priv->ibss_mac_hash[index]) {
3244                         entry = list_entry(p, struct iwl4965_ibss_seq, list);
3245                         if (!compare_ether_addr(entry->mac, mac))
3246                                 break;
3247                 }
3248                 if (p == &priv->ibss_mac_hash[index]) {
3249                         entry = kzalloc(sizeof(*entry), GFP_ATOMIC);
3250                         if (!entry) {
3251                                 IWL_ERROR("Cannot malloc new mac entry\n");
3252                                 return 0;
3253                         }
3254                         memcpy(entry->mac, mac, ETH_ALEN);
3255                         entry->seq_num = seq;
3256                         entry->frag_num = frag;
3257                         entry->packet_time = jiffies;
3258                         list_add(&entry->list, &priv->ibss_mac_hash[index]);
3259                         return 0;
3260                 }
3261                 last_seq = &entry->seq_num;
3262                 last_frag = &entry->frag_num;
3263                 last_time = &entry->packet_time;
3264                 break;
3265         }
3266         case IEEE80211_IF_TYPE_STA:
3267                 last_seq = &priv->last_seq_num;
3268                 last_frag = &priv->last_frag_num;
3269                 last_time = &priv->last_packet_time;
3270                 break;
3271         default:
3272                 return 0;
3273         }
3274         if ((*last_seq == seq) &&
3275             time_after(*last_time + IWL_PACKET_RETRY_TIME, jiffies)) {
3276                 if (*last_frag == frag)
3277                         goto drop;
3278                 if (*last_frag + 1 != frag)
3279                         /* out-of-order fragment */
3280                         goto drop;
3281         } else
3282                 *last_seq = seq;
3283
3284         *last_frag = frag;
3285         *last_time = jiffies;
3286         return 0;
3287
3288  drop:
3289         return 1;
3290 }
3291
3292 #ifdef CONFIG_IWL4965_SPECTRUM_MEASUREMENT
3293
3294 #include "iwl-spectrum.h"
3295
3296 #define BEACON_TIME_MASK_LOW    0x00FFFFFF
3297 #define BEACON_TIME_MASK_HIGH   0xFF000000
3298 #define TIME_UNIT               1024
3299
3300 /*
3301  * extended beacon time format
3302  * time in usec will be changed into a 32-bit value in 8:24 format
3303  * the high 1 byte is the beacon counts
3304  * the lower 3 bytes is the time in usec within one beacon interval
3305  */
3306
3307 static u32 iwl4965_usecs_to_beacons(u32 usec, u32 beacon_interval)
3308 {
3309         u32 quot;
3310         u32 rem;
3311         u32 interval = beacon_interval * 1024;
3312
3313         if (!interval || !usec)
3314                 return 0;
3315
3316         quot = (usec / interval) & (BEACON_TIME_MASK_HIGH >> 24);
3317         rem = (usec % interval) & BEACON_TIME_MASK_LOW;
3318
3319         return (quot << 24) + rem;
3320 }
3321
3322 /* base is usually what we get from ucode with each received frame,
3323  * the same as HW timer counter counting down
3324  */
3325
3326 static __le32 iwl4965_add_beacon_time(u32 base, u32 addon, u32 beacon_interval)
3327 {
3328         u32 base_low = base & BEACON_TIME_MASK_LOW;
3329         u32 addon_low = addon & BEACON_TIME_MASK_LOW;
3330         u32 interval = beacon_interval * TIME_UNIT;
3331         u32 res = (base & BEACON_TIME_MASK_HIGH) +
3332             (addon & BEACON_TIME_MASK_HIGH);
3333
3334         if (base_low > addon_low)
3335                 res += base_low - addon_low;
3336         else if (base_low < addon_low) {
3337                 res += interval + base_low - addon_low;
3338                 res += (1 << 24);
3339         } else
3340                 res += (1 << 24);
3341
3342         return cpu_to_le32(res);
3343 }
3344
3345 static int iwl4965_get_measurement(struct iwl4965_priv *priv,
3346                                struct ieee80211_measurement_params *params,
3347                                u8 type)
3348 {
3349         struct iwl4965_spectrum_cmd spectrum;
3350         struct iwl4965_rx_packet *res;
3351         struct iwl4965_host_cmd cmd = {
3352                 .id = REPLY_SPECTRUM_MEASUREMENT_CMD,
3353                 .data = (void *)&spectrum,
3354                 .meta.flags = CMD_WANT_SKB,
3355         };
3356         u32 add_time = le64_to_cpu(params->start_time);
3357         int rc;
3358         int spectrum_resp_status;
3359         int duration = le16_to_cpu(params->duration);
3360
3361         if (iwl4965_is_associated(priv))
3362                 add_time =
3363                     iwl4965_usecs_to_beacons(
3364                         le64_to_cpu(params->start_time) - priv->last_tsf,
3365                         le16_to_cpu(priv->rxon_timing.beacon_interval));
3366
3367         memset(&spectrum, 0, sizeof(spectrum));
3368
3369         spectrum.channel_count = cpu_to_le16(1);
3370         spectrum.flags =
3371             RXON_FLG_TSF2HOST_MSK | RXON_FLG_ANT_A_MSK | RXON_FLG_DIS_DIV_MSK;
3372         spectrum.filter_flags = MEASUREMENT_FILTER_FLAG;
3373         cmd.len = sizeof(spectrum);
3374         spectrum.len = cpu_to_le16(cmd.len - sizeof(spectrum.len));
3375
3376         if (iwl4965_is_associated(priv))
3377                 spectrum.start_time =
3378                     iwl4965_add_beacon_time(priv->last_beacon_time,
3379                                 add_time,
3380                                 le16_to_cpu(priv->rxon_timing.beacon_interval));
3381         else
3382                 spectrum.start_time = 0;
3383
3384         spectrum.channels[0].duration = cpu_to_le32(duration * TIME_UNIT);
3385         spectrum.channels[0].channel = params->channel;
3386         spectrum.channels[0].type = type;
3387         if (priv->active_rxon.flags & RXON_FLG_BAND_24G_MSK)
3388                 spectrum.flags |= RXON_FLG_BAND_24G_MSK |
3389                     RXON_FLG_AUTO_DETECT_MSK | RXON_FLG_TGG_PROTECT_MSK;
3390
3391         rc = iwl4965_send_cmd_sync(priv, &cmd);
3392         if (rc)
3393                 return rc;
3394
3395         res = (struct iwl4965_rx_packet *)cmd.meta.u.skb->data;
3396         if (res->hdr.flags & IWL_CMD_FAILED_MSK) {
3397                 IWL_ERROR("Bad return from REPLY_RX_ON_ASSOC command\n");
3398                 rc = -EIO;
3399         }
3400
3401         spectrum_resp_status = le16_to_cpu(res->u.spectrum.status);
3402         switch (spectrum_resp_status) {
3403         case 0:         /* Command will be handled */
3404                 if (res->u.spectrum.id != 0xff) {
3405                         IWL_DEBUG_INFO
3406                             ("Replaced existing measurement: %d\n",
3407                              res->u.spectrum.id);
3408                         priv->measurement_status &= ~MEASUREMENT_READY;
3409                 }
3410                 priv->measurement_status |= MEASUREMENT_ACTIVE;
3411                 rc = 0;
3412                 break;
3413
3414         case 1:         /* Command will not be handled */
3415                 rc = -EAGAIN;
3416                 break;
3417         }
3418
3419         dev_kfree_skb_any(cmd.meta.u.skb);
3420
3421         return rc;
3422 }
3423 #endif
3424
3425 static void iwl4965_txstatus_to_ieee(struct iwl4965_priv *priv,
3426                                  struct iwl4965_tx_info *tx_sta)
3427 {
3428
3429         tx_sta->status.ack_signal = 0;
3430         tx_sta->status.excessive_retries = 0;
3431         tx_sta->status.queue_length = 0;
3432         tx_sta->status.queue_number = 0;
3433
3434         if (in_interrupt())
3435                 ieee80211_tx_status_irqsafe(priv->hw,
3436                                             tx_sta->skb[0], &(tx_sta->status));
3437         else
3438                 ieee80211_tx_status(priv->hw,
3439                                     tx_sta->skb[0], &(tx_sta->status));
3440
3441         tx_sta->skb[0] = NULL;
3442 }
3443
3444 /**
3445  * iwl4965_tx_queue_reclaim - Reclaim Tx queue entries no more used by NIC.
3446  *
3447  * When FW advances 'R' index, all entries between old and
3448  * new 'R' index need to be reclaimed. As result, some free space
3449  * forms. If there is enough free space (> low mark), wake Tx queue.
3450  */
3451 int iwl4965_tx_queue_reclaim(struct iwl4965_priv *priv, int txq_id, int index)
3452 {
3453         struct iwl4965_tx_queue *txq = &priv->txq[txq_id];
3454         struct iwl4965_queue *q = &txq->q;
3455         int nfreed = 0;
3456
3457         if ((index >= q->n_bd) || (x2_queue_used(q, index) == 0)) {
3458                 IWL_ERROR("Read index for DMA queue txq id (%d), index %d, "
3459                           "is out of range [0-%d] %d %d.\n", txq_id,
3460                           index, q->n_bd, q->write_ptr, q->read_ptr);
3461                 return 0;
3462         }
3463
3464         for (index = iwl4965_queue_inc_wrap(index, q->n_bd);
3465                 q->read_ptr != index;
3466                 q->read_ptr = iwl4965_queue_inc_wrap(q->read_ptr, q->n_bd)) {
3467                 if (txq_id != IWL_CMD_QUEUE_NUM) {
3468                         iwl4965_txstatus_to_ieee(priv,
3469                                         &(txq->txb[txq->q.read_ptr]));
3470                         iwl4965_hw_txq_free_tfd(priv, txq);
3471                 } else if (nfreed > 1) {
3472                         IWL_ERROR("HCMD skipped: index (%d) %d %d\n", index,
3473                                         q->write_ptr, q->read_ptr);
3474                         queue_work(priv->workqueue, &priv->restart);
3475                 }
3476                 nfreed++;
3477         }
3478
3479         if (iwl4965_queue_space(q) > q->low_mark && (txq_id >= 0) &&
3480                         (txq_id != IWL_CMD_QUEUE_NUM) &&
3481                         priv->mac80211_registered)
3482                 ieee80211_wake_queue(priv->hw, txq_id);
3483
3484
3485         return nfreed;
3486 }
3487
3488 static int iwl4965_is_tx_success(u32 status)
3489 {
3490         status &= TX_STATUS_MSK;
3491         return (status == TX_STATUS_SUCCESS)
3492             || (status == TX_STATUS_DIRECT_DONE);
3493 }
3494
3495 /******************************************************************************
3496  *
3497  * Generic RX handler implementations
3498  *
3499  ******************************************************************************/
3500 #ifdef CONFIG_IWL4965_HT
3501 #ifdef CONFIG_IWL4965_HT_AGG
3502
3503 static inline int iwl4965_get_ra_sta_id(struct iwl4965_priv *priv,
3504                                     struct ieee80211_hdr *hdr)
3505 {
3506         if (priv->iw_mode == IEEE80211_IF_TYPE_STA)
3507                 return IWL_AP_ID;
3508         else {
3509                 u8 *da = ieee80211_get_DA(hdr);
3510                 return iwl4965_hw_find_station(priv, da);
3511         }
3512 }
3513
3514 static struct ieee80211_hdr *iwl4965_tx_queue_get_hdr(
3515         struct iwl4965_priv *priv, int txq_id, int idx)
3516 {
3517         if (priv->txq[txq_id].txb[idx].skb[0])
3518                 return (struct ieee80211_hdr *)priv->txq[txq_id].
3519                                 txb[idx].skb[0]->data;
3520         return NULL;
3521 }
3522
3523 static inline u32 iwl4965_get_scd_ssn(struct iwl4965_tx_resp *tx_resp)
3524 {
3525         __le32 *scd_ssn = (__le32 *)((u32 *)&tx_resp->status +
3526                                 tx_resp->frame_count);
3527         return le32_to_cpu(*scd_ssn) & MAX_SN;
3528
3529 }
3530 static int iwl4965_tx_status_reply_tx(struct iwl4965_priv *priv,
3531                                       struct iwl4965_ht_agg *agg,
3532                                       struct iwl4965_tx_resp *tx_resp,
3533                                       u16 start_idx)
3534 {
3535         u32 status;
3536         __le32 *frame_status = &tx_resp->status;
3537         struct ieee80211_tx_status *tx_status = NULL;
3538         struct ieee80211_hdr *hdr = NULL;
3539         int i, sh;
3540         int txq_id, idx;
3541         u16 seq;
3542
3543         if (agg->wait_for_ba)
3544                 IWL_DEBUG_TX_REPLY("got tx repsons w/o back\n");
3545
3546         agg->frame_count = tx_resp->frame_count;
3547         agg->start_idx = start_idx;
3548         agg->rate_n_flags = le32_to_cpu(tx_resp->rate_n_flags);
3549         agg->bitmap0 = agg->bitmap1 = 0;
3550
3551         if (agg->frame_count == 1) {
3552                 struct iwl4965_tx_queue *txq ;
3553                 status = le32_to_cpu(frame_status[0]);
3554
3555                 txq_id = agg->txq_id;
3556                 txq = &priv->txq[txq_id];
3557                 /* FIXME: code repetition */
3558                 IWL_DEBUG_TX_REPLY("FrameCnt = %d, StartIdx=%d \n",
3559                                    agg->frame_count, agg->start_idx);
3560
3561                 tx_status = &(priv->txq[txq_id].txb[txq->q.read_ptr].status);
3562                 tx_status->retry_count = tx_resp->failure_frame;
3563                 tx_status->queue_number = status & 0xff;
3564                 tx_status->queue_length = tx_resp->bt_kill_count;
3565                 tx_status->queue_length |= tx_resp->failure_rts;
3566
3567                 tx_status->flags = iwl4965_is_tx_success(status)?
3568                         IEEE80211_TX_STATUS_ACK : 0;
3569                 tx_status->control.tx_rate =
3570                                 iwl4965_hw_get_rate_n_flags(tx_resp->rate_n_flags);
3571                 /* FIXME: code repetition end */
3572
3573                 IWL_DEBUG_TX_REPLY("1 Frame 0x%x failure :%d\n",
3574                                     status & 0xff, tx_resp->failure_frame);
3575                 IWL_DEBUG_TX_REPLY("Rate Info rate_n_flags=%x\n",
3576                                 iwl4965_hw_get_rate_n_flags(tx_resp->rate_n_flags));
3577
3578                 agg->wait_for_ba = 0;
3579         } else {
3580                 u64 bitmap = 0;
3581                 int start = agg->start_idx;
3582
3583                 for (i = 0; i < agg->frame_count; i++) {
3584                         u16 sc;
3585                         status = le32_to_cpu(frame_status[i]);
3586                         seq  = status >> 16;
3587                         idx = SEQ_TO_INDEX(seq);
3588                         txq_id = SEQ_TO_QUEUE(seq);
3589
3590                         if (status & (AGG_TX_STATE_FEW_BYTES_MSK |
3591                                       AGG_TX_STATE_ABORT_MSK))
3592                                 continue;
3593
3594                         IWL_DEBUG_TX_REPLY("FrameCnt = %d, txq_id=%d idx=%d\n",
3595                                            agg->frame_count, txq_id, idx);
3596
3597                         hdr = iwl4965_tx_queue_get_hdr(priv, txq_id, idx);
3598
3599                         sc = le16_t