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rt2x00: Fix queue index handling
[GitHub/LineageOS/android_kernel_samsung_universal7580.git] / drivers / net / wireless / iwlwifi / iwl4965-base.c
1 /******************************************************************************
2 *
3 * Copyright(c) 2003 - 2007 Intel Corporation. All rights reserved.
4 *
5 * Portions of this file are derived from the ipw3945 project, as well
6 * as portions of the ieee80211 subsystem header files.
7 *
8 * This program is free software; you can redistribute it and/or modify it
9 * under the terms of version 2 of the GNU General Public License as
10 * published by the Free Software Foundation.
11 *
12 * This program is distributed in the hope that it will be useful, but WITHOUT
13 * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
14 * FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License for
15 * more details.
16 *
17 * You should have received a copy of the GNU General Public License along with
18 * this program; if not, write to the Free Software Foundation, Inc.,
19 * 51 Franklin Street, Fifth Floor, Boston, MA 02110, USA
20 *
21 * The full GNU General Public License is included in this distribution in the
22 * file called LICENSE.
23 *
24 * Contact Information:
25 * James P. Ketrenos <ipw2100-admin@linux.intel.com>
26 * Intel Corporation, 5200 N.E. Elam Young Parkway, Hillsboro, OR 97124-6497
27 *
28 *****************************************************************************/
29
30 #include <linux/kernel.h>
31 #include <linux/module.h>
32 #include <linux/version.h>
33 #include <linux/init.h>
34 #include <linux/pci.h>
35 #include <linux/dma-mapping.h>
36 #include <linux/delay.h>
37 #include <linux/skbuff.h>
38 #include <linux/netdevice.h>
39 #include <linux/wireless.h>
40 #include <linux/firmware.h>
41 #include <linux/etherdevice.h>
42 #include <linux/if_arp.h>
43
44 #include <net/mac80211.h>
45
46 #include <asm/div64.h>
47
48 #include "iwl-4965.h"
49 #include "iwl-helpers.h"
50
51 #ifdef CONFIG_IWL4965_DEBUG
52 u32 iwl4965_debug_level;
53 #endif
54
55 static int iwl4965_tx_queue_update_write_ptr(struct iwl4965_priv *priv,
56 struct iwl4965_tx_queue *txq);
57
58 /******************************************************************************
59 *
60 * module boiler plate
61 *
62 ******************************************************************************/
63
64 /* module parameters */
65 static int iwl4965_param_disable_hw_scan; /* def: 0 = use 4965's h/w scan */
66 static int iwl4965_param_debug; /* def: 0 = minimal debug log messages */
67 static int iwl4965_param_disable; /* def: enable radio */
68 static int iwl4965_param_antenna; /* def: 0 = both antennas (use diversity) */
69 int iwl4965_param_hwcrypto; /* def: using software encryption */
70 static int iwl4965_param_qos_enable = 1; /* def: 1 = use quality of service */
71 int iwl4965_param_queues_num = IWL_MAX_NUM_QUEUES; /* def: 16 Tx queues */
72 int iwl4965_param_amsdu_size_8K; /* def: enable 8K amsdu size */
73
74 /*
75 * module name, copyright, version, etc.
76 * NOTE: DRV_NAME is defined in iwlwifi.h for use by iwl-debug.h and printk
77 */
78
79 #define DRV_DESCRIPTION "Intel(R) Wireless WiFi Link 4965AGN driver for Linux"
80
81 #ifdef CONFIG_IWL4965_DEBUG
82 #define VD "d"
83 #else
84 #define VD
85 #endif
86
87 #ifdef CONFIG_IWL4965_SPECTRUM_MEASUREMENT
88 #define VS "s"
89 #else
90 #define VS
91 #endif
92
93 #define IWLWIFI_VERSION "1.2.23k" VD VS
94 #define DRV_COPYRIGHT "Copyright(c) 2003-2007 Intel Corporation"
95 #define DRV_VERSION IWLWIFI_VERSION
96
97 /* Change firmware file name, using "-" and incrementing number,
98 * *only* when uCode interface or architecture changes so that it
99 * is not compatible with earlier drivers.
100 * This number will also appear in << 8 position of 1st dword of uCode file */
101 #define IWL4965_UCODE_API "-1"
102
103 MODULE_DESCRIPTION(DRV_DESCRIPTION);
104 MODULE_VERSION(DRV_VERSION);
105 MODULE_AUTHOR(DRV_COPYRIGHT);
106 MODULE_LICENSE("GPL");
107
108 __le16 *ieee80211_get_qos_ctrl(struct ieee80211_hdr *hdr)
109 {
110 u16 fc = le16_to_cpu(hdr->frame_control);
111 int hdr_len = ieee80211_get_hdrlen(fc);
112
113 if ((fc & 0x00cc) == (IEEE80211_STYPE_QOS_DATA | IEEE80211_FTYPE_DATA))
114 return (__le16 *) ((u8 *) hdr + hdr_len - QOS_CONTROL_LEN);
115 return NULL;
116 }
117
118 static const struct ieee80211_hw_mode *iwl4965_get_hw_mode(
119 struct iwl4965_priv *priv, int mode)
120 {
121 int i;
122
123 for (i = 0; i < 3; i++)
124 if (priv->modes[i].mode == mode)
125 return &priv->modes[i];
126
127 return NULL;
128 }
129
130 static int iwl4965_is_empty_essid(const char *essid, int essid_len)
131 {
132 /* Single white space is for Linksys APs */
133 if (essid_len == 1 && essid[0] == ' ')
134 return 1;
135
136 /* Otherwise, if the entire essid is 0, we assume it is hidden */
137 while (essid_len) {
138 essid_len--;
139 if (essid[essid_len] != '\0')
140 return 0;
141 }
142
143 return 1;
144 }
145
146 static const char *iwl4965_escape_essid(const char *essid, u8 essid_len)
147 {
148 static char escaped[IW_ESSID_MAX_SIZE * 2 + 1];
149 const char *s = essid;
150 char *d = escaped;
151
152 if (iwl4965_is_empty_essid(essid, essid_len)) {
153 memcpy(escaped, "<hidden>", sizeof("<hidden>"));
154 return escaped;
155 }
156
157 essid_len = min(essid_len, (u8) IW_ESSID_MAX_SIZE);
158 while (essid_len--) {
159 if (*s == '\0') {
160 *d++ = '\\';
161 *d++ = '0';
162 s++;
163 } else
164 *d++ = *s++;
165 }
166 *d = '\0';
167 return escaped;
168 }
169
170 static void iwl4965_print_hex_dump(int level, void *p, u32 len)
171 {
172 #ifdef CONFIG_IWL4965_DEBUG
173 if (!(iwl4965_debug_level & level))
174 return;
175
176 print_hex_dump(KERN_DEBUG, "iwl data: ", DUMP_PREFIX_OFFSET, 16, 1,
177 p, len, 1);
178 #endif
179 }
180
181 /*************** DMA-QUEUE-GENERAL-FUNCTIONS *****
182 * DMA services
183 *
184 * Theory of operation
185 *
186 * A Tx or Rx queue resides in host DRAM, and is comprised of a circular buffer
187 * of buffer descriptors, each of which points to one or more data buffers for
188 * the device to read from or fill. Driver and device exchange status of each
189 * queue via "read" and "write" pointers. Driver keeps minimum of 2 empty
190 * entries in each circular buffer, to protect against confusing empty and full
191 * queue states.
192 *
193 * The device reads or writes the data in the queues via the device's several
194 * DMA/FIFO channels. Each queue is mapped to a single DMA channel.
195 *
196 * For Tx queue, there are low mark and high mark limits. If, after queuing
197 * the packet for Tx, free space become < low mark, Tx queue stopped. When
198 * reclaiming packets (on 'tx done IRQ), if free space become > high mark,
199 * Tx queue resumed.
200 *
201 * The 4965 operates with up to 17 queues: One receive queue, one transmit
202 * queue (#4) for sending commands to the device firmware, and 15 other
203 * Tx queues that may be mapped to prioritized Tx DMA/FIFO channels.
204 *
205 * See more detailed info in iwl-4965-hw.h.
206 ***************************************************/
207
208 int iwl4965_queue_space(const struct iwl4965_queue *q)
209 {
210 int s = q->read_ptr - q->write_ptr;
211
212 if (q->read_ptr > q->write_ptr)
213 s -= q->n_bd;
214
215 if (s <= 0)
216 s += q->n_window;
217 /* keep some reserve to not confuse empty and full situations */
218 s -= 2;
219 if (s < 0)
220 s = 0;
221 return s;
222 }
223
224 /**
225 * iwl4965_queue_inc_wrap - increment queue index, wrap back to beginning
226 * @index -- current index
227 * @n_bd -- total number of entries in queue (must be power of 2)
228 */
229 static inline int iwl4965_queue_inc_wrap(int index, int n_bd)
230 {
231 return ++index & (n_bd - 1);
232 }
233
234 /**
235 * iwl4965_queue_dec_wrap - decrement queue index, wrap back to end
236 * @index -- current index
237 * @n_bd -- total number of entries in queue (must be power of 2)
238 */
239 static inline int iwl4965_queue_dec_wrap(int index, int n_bd)
240 {
241 return --index & (n_bd - 1);
242 }
243
244 static inline int x2_queue_used(const struct iwl4965_queue *q, int i)
245 {
246 return q->write_ptr > q->read_ptr ?
247 (i >= q->read_ptr && i < q->write_ptr) :
248 !(i < q->read_ptr && i >= q->write_ptr);
249 }
250
251 static inline u8 get_cmd_index(struct iwl4965_queue *q, u32 index, int is_huge)
252 {
253 /* This is for scan command, the big buffer at end of command array */
254 if (is_huge)
255 return q->n_window; /* must be power of 2 */
256
257 /* Otherwise, use normal size buffers */
258 return index & (q->n_window - 1);
259 }
260
261 /**
262 * iwl4965_queue_init - Initialize queue's high/low-water and read/write indexes
263 */
264 static int iwl4965_queue_init(struct iwl4965_priv *priv, struct iwl4965_queue *q,
265 int count, int slots_num, u32 id)
266 {
267 q->n_bd = count;
268 q->n_window = slots_num;
269 q->id = id;
270
271 /* count must be power-of-two size, otherwise iwl4965_queue_inc_wrap
272 * and iwl4965_queue_dec_wrap are broken. */
273 BUG_ON(!is_power_of_2(count));
274
275 /* slots_num must be power-of-two size, otherwise
276 * get_cmd_index is broken. */
277 BUG_ON(!is_power_of_2(slots_num));
278
279 q->low_mark = q->n_window / 4;
280 if (q->low_mark < 4)
281 q->low_mark = 4;
282
283 q->high_mark = q->n_window / 8;
284 if (q->high_mark < 2)
285 q->high_mark = 2;
286
287 q->write_ptr = q->read_ptr = 0;
288
289 return 0;
290 }
291
292 /**
293 * iwl4965_tx_queue_alloc - Alloc driver data and TFD CB for one Tx/cmd queue
294 */
295 static int iwl4965_tx_queue_alloc(struct iwl4965_priv *priv,
296 struct iwl4965_tx_queue *txq, u32 id)
297 {
298 struct pci_dev *dev = priv->pci_dev;
299
300 /* Driver private data, only for Tx (not command) queues,
301 * not shared with device. */
302 if (id != IWL_CMD_QUEUE_NUM) {
303 txq->txb = kmalloc(sizeof(txq->txb[0]) *
304 TFD_QUEUE_SIZE_MAX, GFP_KERNEL);
305 if (!txq->txb) {
306 IWL_ERROR("kmalloc for auxiliary BD "
307 "structures failed\n");
308 goto error;
309 }
310 } else
311 txq->txb = NULL;
312
313 /* Circular buffer of transmit frame descriptors (TFDs),
314 * shared with device */
315 txq->bd = pci_alloc_consistent(dev,
316 sizeof(txq->bd[0]) * TFD_QUEUE_SIZE_MAX,
317 &txq->q.dma_addr);
318
319 if (!txq->bd) {
320 IWL_ERROR("pci_alloc_consistent(%zd) failed\n",
321 sizeof(txq->bd[0]) * TFD_QUEUE_SIZE_MAX);
322 goto error;
323 }
324 txq->q.id = id;
325
326 return 0;
327
328 error:
329 if (txq->txb) {
330 kfree(txq->txb);
331 txq->txb = NULL;
332 }
333
334 return -ENOMEM;
335 }
336
337 /**
338 * iwl4965_tx_queue_init - Allocate and initialize one tx/cmd queue
339 */
340 int iwl4965_tx_queue_init(struct iwl4965_priv *priv,
341 struct iwl4965_tx_queue *txq, int slots_num, u32 txq_id)
342 {
343 struct pci_dev *dev = priv->pci_dev;
344 int len;
345 int rc = 0;
346
347 /*
348 * Alloc buffer array for commands (Tx or other types of commands).
349 * For the command queue (#4), allocate command space + one big
350 * command for scan, since scan command is very huge; the system will
351 * not have two scans at the same time, so only one is needed.
352 * For normal Tx queues (all other queues), no super-size command
353 * space is needed.
354 */
355 len = sizeof(struct iwl4965_cmd) * slots_num;
356 if (txq_id == IWL_CMD_QUEUE_NUM)
357 len += IWL_MAX_SCAN_SIZE;
358 txq->cmd = pci_alloc_consistent(dev, len, &txq->dma_addr_cmd);
359 if (!txq->cmd)
360 return -ENOMEM;
361
362 /* Alloc driver data array and TFD circular buffer */
363 rc = iwl4965_tx_queue_alloc(priv, txq, txq_id);
364 if (rc) {
365 pci_free_consistent(dev, len, txq->cmd, txq->dma_addr_cmd);
366
367 return -ENOMEM;
368 }
369 txq->need_update = 0;
370
371 /* TFD_QUEUE_SIZE_MAX must be power-of-two size, otherwise
372 * iwl4965_queue_inc_wrap and iwl4965_queue_dec_wrap are broken. */
373 BUILD_BUG_ON(TFD_QUEUE_SIZE_MAX & (TFD_QUEUE_SIZE_MAX - 1));
374
375 /* Initialize queue's high/low-water marks, and head/tail indexes */
376 iwl4965_queue_init(priv, &txq->q, TFD_QUEUE_SIZE_MAX, slots_num, txq_id);
377
378 /* Tell device where to find queue */
379 iwl4965_hw_tx_queue_init(priv, txq);
380
381 return 0;
382 }
383
384 /**
385 * iwl4965_tx_queue_free - Deallocate DMA queue.
386 * @txq: Transmit queue to deallocate.
387 *
388 * Empty queue by removing and destroying all BD's.
389 * Free all buffers.
390 * 0-fill, but do not free "txq" descriptor structure.
391 */
392 void iwl4965_tx_queue_free(struct iwl4965_priv *priv, struct iwl4965_tx_queue *txq)
393 {
394 struct iwl4965_queue *q = &txq->q;
395 struct pci_dev *dev = priv->pci_dev;
396 int len;
397
398 if (q->n_bd == 0)
399 return;
400
401 /* first, empty all BD's */
402 for (; q->write_ptr != q->read_ptr;
403 q->read_ptr = iwl4965_queue_inc_wrap(q->read_ptr, q->n_bd))
404 iwl4965_hw_txq_free_tfd(priv, txq);
405
406 len = sizeof(struct iwl4965_cmd) * q->n_window;
407 if (q->id == IWL_CMD_QUEUE_NUM)
408 len += IWL_MAX_SCAN_SIZE;
409
410 /* De-alloc array of command/tx buffers */
411 pci_free_consistent(dev, len, txq->cmd, txq->dma_addr_cmd);
412
413 /* De-alloc circular buffer of TFDs */
414 if (txq->q.n_bd)
415 pci_free_consistent(dev, sizeof(struct iwl4965_tfd_frame) *
416 txq->q.n_bd, txq->bd, txq->q.dma_addr);
417
418 /* De-alloc array of per-TFD driver data */
419 if (txq->txb) {
420 kfree(txq->txb);
421 txq->txb = NULL;
422 }
423
424 /* 0-fill queue descriptor structure */
425 memset(txq, 0, sizeof(*txq));
426 }
427
428 const u8 iwl4965_broadcast_addr[ETH_ALEN] = { 0xFF, 0xFF, 0xFF, 0xFF, 0xFF, 0xFF };
429
430 /*************** STATION TABLE MANAGEMENT ****
431 * mac80211 should be examined to determine if sta_info is duplicating
432 * the functionality provided here
433 */
434
435 /**************************************************************/
436
437 #if 0 /* temporary disable till we add real remove station */
438 /**
439 * iwl4965_remove_station - Remove driver's knowledge of station.
440 *
441 * NOTE: This does not remove station from device's station table.
442 */
443 static u8 iwl4965_remove_station(struct iwl4965_priv *priv, const u8 *addr, int is_ap)
444 {
445 int index = IWL_INVALID_STATION;
446 int i;
447 unsigned long flags;
448
449 spin_lock_irqsave(&priv->sta_lock, flags);
450
451 if (is_ap)
452 index = IWL_AP_ID;
453 else if (is_broadcast_ether_addr(addr))
454 index = priv->hw_setting.bcast_sta_id;
455 else
456 for (i = IWL_STA_ID; i < priv->hw_setting.max_stations; i++)
457 if (priv->stations[i].used &&
458 !compare_ether_addr(priv->stations[i].sta.sta.addr,
459 addr)) {
460 index = i;
461 break;
462 }
463
464 if (unlikely(index == IWL_INVALID_STATION))
465 goto out;
466
467 if (priv->stations[index].used) {
468 priv->stations[index].used = 0;
469 priv->num_stations--;
470 }
471
472 BUG_ON(priv->num_stations < 0);
473
474 out:
475 spin_unlock_irqrestore(&priv->sta_lock, flags);
476 return 0;
477 }
478 #endif
479
480 /**
481 * iwl4965_clear_stations_table - Clear the driver's station table
482 *
483 * NOTE: This does not clear or otherwise alter the device's station table.
484 */
485 static void iwl4965_clear_stations_table(struct iwl4965_priv *priv)
486 {
487 unsigned long flags;
488
489 spin_lock_irqsave(&priv->sta_lock, flags);
490
491 priv->num_stations = 0;
492 memset(priv->stations, 0, sizeof(priv->stations));
493
494 spin_unlock_irqrestore(&priv->sta_lock, flags);
495 }
496
497 /**
498 * iwl4965_add_station_flags - Add station to tables in driver and device
499 */
500 u8 iwl4965_add_station_flags(struct iwl4965_priv *priv, const u8 *addr,
501 int is_ap, u8 flags, void *ht_data)
502 {
503 int i;
504 int index = IWL_INVALID_STATION;
505 struct iwl4965_station_entry *station;
506 unsigned long flags_spin;
507 DECLARE_MAC_BUF(mac);
508
509 spin_lock_irqsave(&priv->sta_lock, flags_spin);
510 if (is_ap)
511 index = IWL_AP_ID;
512 else if (is_broadcast_ether_addr(addr))
513 index = priv->hw_setting.bcast_sta_id;
514 else
515 for (i = IWL_STA_ID; i < priv->hw_setting.max_stations; i++) {
516 if (!compare_ether_addr(priv->stations[i].sta.sta.addr,
517 addr)) {
518 index = i;
519 break;
520 }
521
522 if (!priv->stations[i].used &&
523 index == IWL_INVALID_STATION)
524 index = i;
525 }
526
527
528 /* These two conditions have the same outcome, but keep them separate
529 since they have different meanings */
530 if (unlikely(index == IWL_INVALID_STATION)) {
531 spin_unlock_irqrestore(&priv->sta_lock, flags_spin);
532 return index;
533 }
534
535 if (priv->stations[index].used &&
536 !compare_ether_addr(priv->stations[index].sta.sta.addr, addr)) {
537 spin_unlock_irqrestore(&priv->sta_lock, flags_spin);
538 return index;
539 }
540
541
542 IWL_DEBUG_ASSOC("Add STA ID %d: %s\n", index, print_mac(mac, addr));
543 station = &priv->stations[index];
544 station->used = 1;
545 priv->num_stations++;
546
547 /* Set up the REPLY_ADD_STA command to send to device */
548 memset(&station->sta, 0, sizeof(struct iwl4965_addsta_cmd));
549 memcpy(station->sta.sta.addr, addr, ETH_ALEN);
550 station->sta.mode = 0;
551 station->sta.sta.sta_id = index;
552 station->sta.station_flags = 0;
553
554 #ifdef CONFIG_IWL4965_HT
555 /* BCAST station and IBSS stations do not work in HT mode */
556 if (index != priv->hw_setting.bcast_sta_id &&
557 priv->iw_mode != IEEE80211_IF_TYPE_IBSS)
558 iwl4965_set_ht_add_station(priv, index,
559 (struct ieee80211_ht_info *) ht_data);
560 #endif /*CONFIG_IWL4965_HT*/
561
562 spin_unlock_irqrestore(&priv->sta_lock, flags_spin);
563
564 /* Add station to device's station table */
565 iwl4965_send_add_station(priv, &station->sta, flags);
566 return index;
567
568 }
569
570 /*************** DRIVER STATUS FUNCTIONS *****/
571
572 static inline int iwl4965_is_ready(struct iwl4965_priv *priv)
573 {
574 /* The adapter is 'ready' if READY and GEO_CONFIGURED bits are
575 * set but EXIT_PENDING is not */
576 return test_bit(STATUS_READY, &priv->status) &&
577 test_bit(STATUS_GEO_CONFIGURED, &priv->status) &&
578 !test_bit(STATUS_EXIT_PENDING, &priv->status);
579 }
580
581 static inline int iwl4965_is_alive(struct iwl4965_priv *priv)
582 {
583 return test_bit(STATUS_ALIVE, &priv->status);
584 }
585
586 static inline int iwl4965_is_init(struct iwl4965_priv *priv)
587 {
588 return test_bit(STATUS_INIT, &priv->status);
589 }
590
591 static inline int iwl4965_is_rfkill(struct iwl4965_priv *priv)
592 {
593 return test_bit(STATUS_RF_KILL_HW, &priv->status) ||
594 test_bit(STATUS_RF_KILL_SW, &priv->status);
595 }
596
597 static inline int iwl4965_is_ready_rf(struct iwl4965_priv *priv)
598 {
599
600 if (iwl4965_is_rfkill(priv))
601 return 0;
602
603 return iwl4965_is_ready(priv);
604 }
605
606 /*************** HOST COMMAND QUEUE FUNCTIONS *****/
607
608 #define IWL_CMD(x) case x : return #x
609
610 static const char *get_cmd_string(u8 cmd)
611 {
612 switch (cmd) {
613 IWL_CMD(REPLY_ALIVE);
614 IWL_CMD(REPLY_ERROR);
615 IWL_CMD(REPLY_RXON);
616 IWL_CMD(REPLY_RXON_ASSOC);
617 IWL_CMD(REPLY_QOS_PARAM);
618 IWL_CMD(REPLY_RXON_TIMING);
619 IWL_CMD(REPLY_ADD_STA);
620 IWL_CMD(REPLY_REMOVE_STA);
621 IWL_CMD(REPLY_REMOVE_ALL_STA);
622 IWL_CMD(REPLY_TX);
623 IWL_CMD(REPLY_RATE_SCALE);
624 IWL_CMD(REPLY_LEDS_CMD);
625 IWL_CMD(REPLY_TX_LINK_QUALITY_CMD);
626 IWL_CMD(RADAR_NOTIFICATION);
627 IWL_CMD(REPLY_QUIET_CMD);
628 IWL_CMD(REPLY_CHANNEL_SWITCH);
629 IWL_CMD(CHANNEL_SWITCH_NOTIFICATION);
630 IWL_CMD(REPLY_SPECTRUM_MEASUREMENT_CMD);
631 IWL_CMD(SPECTRUM_MEASURE_NOTIFICATION);
632 IWL_CMD(POWER_TABLE_CMD);
633 IWL_CMD(PM_SLEEP_NOTIFICATION);
634 IWL_CMD(PM_DEBUG_STATISTIC_NOTIFIC);
635 IWL_CMD(REPLY_SCAN_CMD);
636 IWL_CMD(REPLY_SCAN_ABORT_CMD);
637 IWL_CMD(SCAN_START_NOTIFICATION);
638 IWL_CMD(SCAN_RESULTS_NOTIFICATION);
639 IWL_CMD(SCAN_COMPLETE_NOTIFICATION);
640 IWL_CMD(BEACON_NOTIFICATION);
641 IWL_CMD(REPLY_TX_BEACON);
642 IWL_CMD(WHO_IS_AWAKE_NOTIFICATION);
643 IWL_CMD(QUIET_NOTIFICATION);
644 IWL_CMD(REPLY_TX_PWR_TABLE_CMD);
645 IWL_CMD(MEASURE_ABORT_NOTIFICATION);
646 IWL_CMD(REPLY_BT_CONFIG);
647 IWL_CMD(REPLY_STATISTICS_CMD);
648 IWL_CMD(STATISTICS_NOTIFICATION);
649 IWL_CMD(REPLY_CARD_STATE_CMD);
650 IWL_CMD(CARD_STATE_NOTIFICATION);
651 IWL_CMD(MISSED_BEACONS_NOTIFICATION);
652 IWL_CMD(REPLY_CT_KILL_CONFIG_CMD);
653 IWL_CMD(SENSITIVITY_CMD);
654 IWL_CMD(REPLY_PHY_CALIBRATION_CMD);
655 IWL_CMD(REPLY_RX_PHY_CMD);
656 IWL_CMD(REPLY_RX_MPDU_CMD);
657 IWL_CMD(REPLY_4965_RX);
658 IWL_CMD(REPLY_COMPRESSED_BA);
659 default:
660 return "UNKNOWN";
661
662 }
663 }
664
665 #define HOST_COMPLETE_TIMEOUT (HZ / 2)
666
667 /**
668 * iwl4965_enqueue_hcmd - enqueue a uCode command
669 * @priv: device private data point
670 * @cmd: a point to the ucode command structure
671 *
672 * The function returns < 0 values to indicate the operation is
673 * failed. On success, it turns the index (> 0) of command in the
674 * command queue.
675 */
676 static int iwl4965_enqueue_hcmd(struct iwl4965_priv *priv, struct iwl4965_host_cmd *cmd)
677 {
678 struct iwl4965_tx_queue *txq = &priv->txq[IWL_CMD_QUEUE_NUM];
679 struct iwl4965_queue *q = &txq->q;
680 struct iwl4965_tfd_frame *tfd;
681 u32 *control_flags;
682 struct iwl4965_cmd *out_cmd;
683 u32 idx;
684 u16 fix_size = (u16)(cmd->len + sizeof(out_cmd->hdr));
685 dma_addr_t phys_addr;
686 int ret;
687 unsigned long flags;
688
689 /* If any of the command structures end up being larger than
690 * the TFD_MAX_PAYLOAD_SIZE, and it sent as a 'small' command then
691 * we will need to increase the size of the TFD entries */
692 BUG_ON((fix_size > TFD_MAX_PAYLOAD_SIZE) &&
693 !(cmd->meta.flags & CMD_SIZE_HUGE));
694
695 if (iwl4965_is_rfkill(priv)) {
696 IWL_DEBUG_INFO("Not sending command - RF KILL");
697 return -EIO;
698 }
699
700 if (iwl4965_queue_space(q) < ((cmd->meta.flags & CMD_ASYNC) ? 2 : 1)) {
701 IWL_ERROR("No space for Tx\n");
702 return -ENOSPC;
703 }
704
705 spin_lock_irqsave(&priv->hcmd_lock, flags);
706
707 tfd = &txq->bd[q->write_ptr];
708 memset(tfd, 0, sizeof(*tfd));
709
710 control_flags = (u32 *) tfd;
711
712 idx = get_cmd_index(q, q->write_ptr, cmd->meta.flags & CMD_SIZE_HUGE);
713 out_cmd = &txq->cmd[idx];
714
715 out_cmd->hdr.cmd = cmd->id;
716 memcpy(&out_cmd->meta, &cmd->meta, sizeof(cmd->meta));
717 memcpy(&out_cmd->cmd.payload, cmd->data, cmd->len);
718
719 /* At this point, the out_cmd now has all of the incoming cmd
720 * information */
721
722 out_cmd->hdr.flags = 0;
723 out_cmd->hdr.sequence = cpu_to_le16(QUEUE_TO_SEQ(IWL_CMD_QUEUE_NUM) |
724 INDEX_TO_SEQ(q->write_ptr));
725 if (out_cmd->meta.flags & CMD_SIZE_HUGE)
726 out_cmd->hdr.sequence |= cpu_to_le16(SEQ_HUGE_FRAME);
727
728 phys_addr = txq->dma_addr_cmd + sizeof(txq->cmd[0]) * idx +
729 offsetof(struct iwl4965_cmd, hdr);
730 iwl4965_hw_txq_attach_buf_to_tfd(priv, tfd, phys_addr, fix_size);
731
732 IWL_DEBUG_HC("Sending command %s (#%x), seq: 0x%04X, "
733 "%d bytes at %d[%d]:%d\n",
734 get_cmd_string(out_cmd->hdr.cmd),
735 out_cmd->hdr.cmd, le16_to_cpu(out_cmd->hdr.sequence),
736 fix_size, q->write_ptr, idx, IWL_CMD_QUEUE_NUM);
737
738 txq->need_update = 1;
739
740 /* Set up entry in queue's byte count circular buffer */
741 ret = iwl4965_tx_queue_update_wr_ptr(priv, txq, 0);
742
743 /* Increment and update queue's write index */
744 q->write_ptr = iwl4965_queue_inc_wrap(q->write_ptr, q->n_bd);
745 iwl4965_tx_queue_update_write_ptr(priv, txq);
746
747 spin_unlock_irqrestore(&priv->hcmd_lock, flags);
748 return ret ? ret : idx;
749 }
750
751 static int iwl4965_send_cmd_async(struct iwl4965_priv *priv, struct iwl4965_host_cmd *cmd)
752 {
753 int ret;
754
755 BUG_ON(!(cmd->meta.flags & CMD_ASYNC));
756
757 /* An asynchronous command can not expect an SKB to be set. */
758 BUG_ON(cmd->meta.flags & CMD_WANT_SKB);
759
760 /* An asynchronous command MUST have a callback. */
761 BUG_ON(!cmd->meta.u.callback);
762
763 if (test_bit(STATUS_EXIT_PENDING, &priv->status))
764 return -EBUSY;
765
766 ret = iwl4965_enqueue_hcmd(priv, cmd);
767 if (ret < 0) {
768 IWL_ERROR("Error sending %s: iwl4965_enqueue_hcmd failed: %d\n",
769 get_cmd_string(cmd->id), ret);
770 return ret;
771 }
772 return 0;
773 }
774
775 static int iwl4965_send_cmd_sync(struct iwl4965_priv *priv, struct iwl4965_host_cmd *cmd)
776 {
777 int cmd_idx;
778 int ret;
779 static atomic_t entry = ATOMIC_INIT(0); /* reentrance protection */
780
781 BUG_ON(cmd->meta.flags & CMD_ASYNC);
782
783 /* A synchronous command can not have a callback set. */
784 BUG_ON(cmd->meta.u.callback != NULL);
785
786 if (atomic_xchg(&entry, 1)) {
787 IWL_ERROR("Error sending %s: Already sending a host command\n",
788 get_cmd_string(cmd->id));
789 return -EBUSY;
790 }
791
792 set_bit(STATUS_HCMD_ACTIVE, &priv->status);
793
794 if (cmd->meta.flags & CMD_WANT_SKB)
795 cmd->meta.source = &cmd->meta;
796
797 cmd_idx = iwl4965_enqueue_hcmd(priv, cmd);
798 if (cmd_idx < 0) {
799 ret = cmd_idx;
800 IWL_ERROR("Error sending %s: iwl4965_enqueue_hcmd failed: %d\n",
801 get_cmd_string(cmd->id), ret);
802 goto out;
803 }
804
805 ret = wait_event_interruptible_timeout(priv->wait_command_queue,
806 !test_bit(STATUS_HCMD_ACTIVE, &priv->status),
807 HOST_COMPLETE_TIMEOUT);
808 if (!ret) {
809 if (test_bit(STATUS_HCMD_ACTIVE, &priv->status)) {
810 IWL_ERROR("Error sending %s: time out after %dms.\n",
811 get_cmd_string(cmd->id),
812 jiffies_to_msecs(HOST_COMPLETE_TIMEOUT));
813
814 clear_bit(STATUS_HCMD_ACTIVE, &priv->status);
815 ret = -ETIMEDOUT;
816 goto cancel;
817 }
818 }
819
820 if (test_bit(STATUS_RF_KILL_HW, &priv->status)) {
821 IWL_DEBUG_INFO("Command %s aborted: RF KILL Switch\n",
822 get_cmd_string(cmd->id));
823 ret = -ECANCELED;
824 goto fail;
825 }
826 if (test_bit(STATUS_FW_ERROR, &priv->status)) {
827 IWL_DEBUG_INFO("Command %s failed: FW Error\n",
828 get_cmd_string(cmd->id));
829 ret = -EIO;
830 goto fail;
831 }
832 if ((cmd->meta.flags & CMD_WANT_SKB) && !cmd->meta.u.skb) {
833 IWL_ERROR("Error: Response NULL in '%s'\n",
834 get_cmd_string(cmd->id));
835 ret = -EIO;
836 goto out;
837 }
838
839 ret = 0;
840 goto out;
841
842 cancel:
843 if (cmd->meta.flags & CMD_WANT_SKB) {
844 struct iwl4965_cmd *qcmd;
845
846 /* Cancel the CMD_WANT_SKB flag for the cmd in the
847 * TX cmd queue. Otherwise in case the cmd comes
848 * in later, it will possibly set an invalid
849 * address (cmd->meta.source). */
850 qcmd = &priv->txq[IWL_CMD_QUEUE_NUM].cmd[cmd_idx];
851 qcmd->meta.flags &= ~CMD_WANT_SKB;
852 }
853 fail:
854 if (cmd->meta.u.skb) {
855 dev_kfree_skb_any(cmd->meta.u.skb);
856 cmd->meta.u.skb = NULL;
857 }
858 out:
859 atomic_set(&entry, 0);
860 return ret;
861 }
862
863 int iwl4965_send_cmd(struct iwl4965_priv *priv, struct iwl4965_host_cmd *cmd)
864 {
865 if (cmd->meta.flags & CMD_ASYNC)
866 return iwl4965_send_cmd_async(priv, cmd);
867
868 return iwl4965_send_cmd_sync(priv, cmd);
869 }
870
871 int iwl4965_send_cmd_pdu(struct iwl4965_priv *priv, u8 id, u16 len, const void *data)
872 {
873 struct iwl4965_host_cmd cmd = {
874 .id = id,
875 .len = len,
876 .data = data,
877 };
878
879 return iwl4965_send_cmd_sync(priv, &cmd);
880 }
881
882 static int __must_check iwl4965_send_cmd_u32(struct iwl4965_priv *priv, u8 id, u32 val)
883 {
884 struct iwl4965_host_cmd cmd = {
885 .id = id,
886 .len = sizeof(val),
887 .data = &val,
888 };
889
890 return iwl4965_send_cmd_sync(priv, &cmd);
891 }
892
893 int iwl4965_send_statistics_request(struct iwl4965_priv *priv)
894 {
895 return iwl4965_send_cmd_u32(priv, REPLY_STATISTICS_CMD, 0);
896 }
897
898 /**
899 * iwl4965_rxon_add_station - add station into station table.
900 *
901 * there is only one AP station with id= IWL_AP_ID
902 * NOTE: mutex must be held before calling this fnction
903 */
904 static int iwl4965_rxon_add_station(struct iwl4965_priv *priv,
905 const u8 *addr, int is_ap)
906 {
907 u8 sta_id;
908
909 /* Add station to device's station table */
910 #ifdef CONFIG_IWL4965_HT
911 struct ieee80211_conf *conf = &priv->hw->conf;
912 struct ieee80211_ht_info *cur_ht_config = &conf->ht_conf;
913
914 if ((is_ap) &&
915 (conf->flags & IEEE80211_CONF_SUPPORT_HT_MODE) &&
916 (priv->iw_mode == IEEE80211_IF_TYPE_STA))
917 sta_id = iwl4965_add_station_flags(priv, addr, is_ap,
918 0, cur_ht_config);
919 else
920 #endif /* CONFIG_IWL4965_HT */
921 sta_id = iwl4965_add_station_flags(priv, addr, is_ap,
922 0, NULL);
923
924 /* Set up default rate scaling table in device's station table */
925 iwl4965_add_station(priv, addr, is_ap);
926
927 return sta_id;
928 }
929
930 /**
931 * iwl4965_set_rxon_channel - Set the phymode and channel values in staging RXON
932 * @phymode: MODE_IEEE80211A sets to 5.2GHz; all else set to 2.4GHz
933 * @channel: Any channel valid for the requested phymode
934
935 * In addition to setting the staging RXON, priv->phymode is also set.
936 *
937 * NOTE: Does not commit to the hardware; it sets appropriate bit fields
938 * in the staging RXON flag structure based on the phymode
939 */
940 static int iwl4965_set_rxon_channel(struct iwl4965_priv *priv, u8 phymode,
941 u16 channel)
942 {
943 if (!iwl4965_get_channel_info(priv, phymode, channel)) {
944 IWL_DEBUG_INFO("Could not set channel to %d [%d]\n",
945 channel, phymode);
946 return -EINVAL;
947 }
948
949 if ((le16_to_cpu(priv->staging_rxon.channel) == channel) &&
950 (priv->phymode == phymode))
951 return 0;
952
953 priv->staging_rxon.channel = cpu_to_le16(channel);
954 if (phymode == MODE_IEEE80211A)
955 priv->staging_rxon.flags &= ~RXON_FLG_BAND_24G_MSK;
956 else
957 priv->staging_rxon.flags |= RXON_FLG_BAND_24G_MSK;
958
959 priv->phymode = phymode;
960
961 IWL_DEBUG_INFO("Staging channel set to %d [%d]\n", channel, phymode);
962
963 return 0;
964 }
965
966 /**
967 * iwl4965_check_rxon_cmd - validate RXON structure is valid
968 *
969 * NOTE: This is really only useful during development and can eventually
970 * be #ifdef'd out once the driver is stable and folks aren't actively
971 * making changes
972 */
973 static int iwl4965_check_rxon_cmd(struct iwl4965_rxon_cmd *rxon)
974 {
975 int error = 0;
976 int counter = 1;
977
978 if (rxon->flags & RXON_FLG_BAND_24G_MSK) {
979 error |= le32_to_cpu(rxon->flags &
980 (RXON_FLG_TGJ_NARROW_BAND_MSK |
981 RXON_FLG_RADAR_DETECT_MSK));
982 if (error)
983 IWL_WARNING("check 24G fields %d | %d\n",
984 counter++, error);
985 } else {
986 error |= (rxon->flags & RXON_FLG_SHORT_SLOT_MSK) ?
987 0 : le32_to_cpu(RXON_FLG_SHORT_SLOT_MSK);
988 if (error)
989 IWL_WARNING("check 52 fields %d | %d\n",
990 counter++, error);
991 error |= le32_to_cpu(rxon->flags & RXON_FLG_CCK_MSK);
992 if (error)
993 IWL_WARNING("check 52 CCK %d | %d\n",
994 counter++, error);
995 }
996 error |= (rxon->node_addr[0] | rxon->bssid_addr[0]) & 0x1;
997 if (error)
998 IWL_WARNING("check mac addr %d | %d\n", counter++, error);
999
1000 /* make sure basic rates 6Mbps and 1Mbps are supported */
1001 error |= (((rxon->ofdm_basic_rates & IWL_RATE_6M_MASK) == 0) &&
1002 ((rxon->cck_basic_rates & IWL_RATE_1M_MASK) == 0));
1003 if (error)
1004 IWL_WARNING("check basic rate %d | %d\n", counter++, error);
1005
1006 error |= (le16_to_cpu(rxon->assoc_id) > 2007);
1007 if (error)
1008 IWL_WARNING("check assoc id %d | %d\n", counter++, error);
1009
1010 error |= ((rxon->flags & (RXON_FLG_CCK_MSK | RXON_FLG_SHORT_SLOT_MSK))
1011 == (RXON_FLG_CCK_MSK | RXON_FLG_SHORT_SLOT_MSK));
1012 if (error)
1013 IWL_WARNING("check CCK and short slot %d | %d\n",
1014 counter++, error);
1015
1016 error |= ((rxon->flags & (RXON_FLG_CCK_MSK | RXON_FLG_AUTO_DETECT_MSK))
1017 == (RXON_FLG_CCK_MSK | RXON_FLG_AUTO_DETECT_MSK));
1018 if (error)
1019 IWL_WARNING("check CCK & auto detect %d | %d\n",
1020 counter++, error);
1021
1022 error |= ((rxon->flags & (RXON_FLG_AUTO_DETECT_MSK |
1023 RXON_FLG_TGG_PROTECT_MSK)) == RXON_FLG_TGG_PROTECT_MSK);
1024 if (error)
1025 IWL_WARNING("check TGG and auto detect %d | %d\n",
1026 counter++, error);
1027
1028 if (error)
1029 IWL_WARNING("Tuning to channel %d\n",
1030 le16_to_cpu(rxon->channel));
1031
1032 if (error) {
1033 IWL_ERROR("Not a valid iwl4965_rxon_assoc_cmd field values\n");
1034 return -1;
1035 }
1036 return 0;
1037 }
1038
1039 /**
1040 * iwl4965_full_rxon_required - check if full RXON (vs RXON_ASSOC) cmd is needed
1041 * @priv: staging_rxon is compared to active_rxon
1042 *
1043 * If the RXON structure is changing enough to require a new tune,
1044 * or is clearing the RXON_FILTER_ASSOC_MSK, then return 1 to indicate that
1045 * a new tune (full RXON command, rather than RXON_ASSOC cmd) is required.
1046 */
1047 static int iwl4965_full_rxon_required(struct iwl4965_priv *priv)
1048 {
1049
1050 /* These items are only settable from the full RXON command */
1051 if (!(priv->active_rxon.filter_flags & RXON_FILTER_ASSOC_MSK) ||
1052 compare_ether_addr(priv->staging_rxon.bssid_addr,
1053 priv->active_rxon.bssid_addr) ||
1054 compare_ether_addr(priv->staging_rxon.node_addr,
1055 priv->active_rxon.node_addr) ||
1056 compare_ether_addr(priv->staging_rxon.wlap_bssid_addr,
1057 priv->active_rxon.wlap_bssid_addr) ||
1058 (priv->staging_rxon.dev_type != priv->active_rxon.dev_type) ||
1059 (priv->staging_rxon.channel != priv->active_rxon.channel) ||
1060 (priv->staging_rxon.air_propagation !=
1061 priv->active_rxon.air_propagation) ||
1062 (priv->staging_rxon.ofdm_ht_single_stream_basic_rates !=
1063 priv->active_rxon.ofdm_ht_single_stream_basic_rates) ||
1064 (priv->staging_rxon.ofdm_ht_dual_stream_basic_rates !=
1065 priv->active_rxon.ofdm_ht_dual_stream_basic_rates) ||
1066 (priv->staging_rxon.rx_chain != priv->active_rxon.rx_chain) ||
1067 (priv->staging_rxon.assoc_id != priv->active_rxon.assoc_id))
1068 return 1;
1069
1070 /* flags, filter_flags, ofdm_basic_rates, and cck_basic_rates can
1071 * be updated with the RXON_ASSOC command -- however only some
1072 * flag transitions are allowed using RXON_ASSOC */
1073
1074 /* Check if we are not switching bands */
1075 if ((priv->staging_rxon.flags & RXON_FLG_BAND_24G_MSK) !=
1076 (priv->active_rxon.flags & RXON_FLG_BAND_24G_MSK))
1077 return 1;
1078
1079 /* Check if we are switching association toggle */
1080 if ((priv->staging_rxon.filter_flags & RXON_FILTER_ASSOC_MSK) !=
1081 (priv->active_rxon.filter_flags & RXON_FILTER_ASSOC_MSK))
1082 return 1;
1083
1084 return 0;
1085 }
1086
1087 static int iwl4965_send_rxon_assoc(struct iwl4965_priv *priv)
1088 {
1089 int rc = 0;
1090 struct iwl4965_rx_packet *res = NULL;
1091 struct iwl4965_rxon_assoc_cmd rxon_assoc;
1092 struct iwl4965_host_cmd cmd = {
1093 .id = REPLY_RXON_ASSOC,
1094 .len = sizeof(rxon_assoc),
1095 .meta.flags = CMD_WANT_SKB,
1096 .data = &rxon_assoc,
1097 };
1098 const struct iwl4965_rxon_cmd *rxon1 = &priv->staging_rxon;
1099 const struct iwl4965_rxon_cmd *rxon2 = &priv->active_rxon;
1100
1101 if ((rxon1->flags == rxon2->flags) &&
1102 (rxon1->filter_flags == rxon2->filter_flags) &&
1103 (rxon1->cck_basic_rates == rxon2->cck_basic_rates) &&
1104 (rxon1->ofdm_ht_single_stream_basic_rates ==
1105 rxon2->ofdm_ht_single_stream_basic_rates) &&
1106 (rxon1->ofdm_ht_dual_stream_basic_rates ==
1107 rxon2->ofdm_ht_dual_stream_basic_rates) &&
1108 (rxon1->rx_chain == rxon2->rx_chain) &&
1109 (rxon1->ofdm_basic_rates == rxon2->ofdm_basic_rates)) {
1110 IWL_DEBUG_INFO("Using current RXON_ASSOC. Not resending.\n");
1111 return 0;
1112 }
1113
1114 rxon_assoc.flags = priv->staging_rxon.flags;
1115 rxon_assoc.filter_flags = priv->staging_rxon.filter_flags;
1116 rxon_assoc.ofdm_basic_rates = priv->staging_rxon.ofdm_basic_rates;
1117 rxon_assoc.cck_basic_rates = priv->staging_rxon.cck_basic_rates;
1118 rxon_assoc.reserved = 0;
1119 rxon_assoc.ofdm_ht_single_stream_basic_rates =
1120 priv->staging_rxon.ofdm_ht_single_stream_basic_rates;
1121 rxon_assoc.ofdm_ht_dual_stream_basic_rates =
1122 priv->staging_rxon.ofdm_ht_dual_stream_basic_rates;
1123 rxon_assoc.rx_chain_select_flags = priv->staging_rxon.rx_chain;
1124
1125 rc = iwl4965_send_cmd_sync(priv, &cmd);
1126 if (rc)
1127 return rc;
1128
1129 res = (struct iwl4965_rx_packet *)cmd.meta.u.skb->data;
1130 if (res->hdr.flags & IWL_CMD_FAILED_MSK) {
1131 IWL_ERROR("Bad return from REPLY_RXON_ASSOC command\n");
1132 rc = -EIO;
1133 }
1134
1135 priv->alloc_rxb_skb--;
1136 dev_kfree_skb_any(cmd.meta.u.skb);
1137
1138 return rc;
1139 }
1140
1141 /**
1142 * iwl4965_commit_rxon - commit staging_rxon to hardware
1143 *
1144 * The RXON command in staging_rxon is committed to the hardware and
1145 * the active_rxon structure is updated with the new data. This
1146 * function correctly transitions out of the RXON_ASSOC_MSK state if
1147 * a HW tune is required based on the RXON structure changes.
1148 */
1149 static int iwl4965_commit_rxon(struct iwl4965_priv *priv)
1150 {
1151 /* cast away the const for active_rxon in this function */
1152 struct iwl4965_rxon_cmd *active_rxon = (void *)&priv->active_rxon;
1153 DECLARE_MAC_BUF(mac);
1154 int rc = 0;
1155
1156 if (!iwl4965_is_alive(priv))
1157 return -1;
1158
1159 /* always get timestamp with Rx frame */
1160 priv->staging_rxon.flags |= RXON_FLG_TSF2HOST_MSK;
1161
1162 rc = iwl4965_check_rxon_cmd(&priv->staging_rxon);
1163 if (rc) {
1164 IWL_ERROR("Invalid RXON configuration. Not committing.\n");
1165 return -EINVAL;
1166 }
1167
1168 /* If we don't need to send a full RXON, we can use
1169 * iwl4965_rxon_assoc_cmd which is used to reconfigure filter
1170 * and other flags for the current radio configuration. */
1171 if (!iwl4965_full_rxon_required(priv)) {
1172 rc = iwl4965_send_rxon_assoc(priv);
1173 if (rc) {
1174 IWL_ERROR("Error setting RXON_ASSOC "
1175 "configuration (%d).\n", rc);
1176 return rc;
1177 }
1178
1179 memcpy(active_rxon, &priv->staging_rxon, sizeof(*active_rxon));
1180
1181 return 0;
1182 }
1183
1184 /* station table will be cleared */
1185 priv->assoc_station_added = 0;
1186
1187 #ifdef CONFIG_IWL4965_SENSITIVITY
1188 priv->sensitivity_data.state = IWL_SENS_CALIB_NEED_REINIT;
1189 if (!priv->error_recovering)
1190 priv->start_calib = 0;
1191
1192 iwl4965_init_sensitivity(priv, CMD_ASYNC, 1);
1193 #endif /* CONFIG_IWL4965_SENSITIVITY */
1194
1195 /* If we are currently associated and the new config requires
1196 * an RXON_ASSOC and the new config wants the associated mask enabled,
1197 * we must clear the associated from the active configuration
1198 * before we apply the new config */
1199 if (iwl4965_is_associated(priv) &&
1200 (priv->staging_rxon.filter_flags & RXON_FILTER_ASSOC_MSK)) {
1201 IWL_DEBUG_INFO("Toggling associated bit on current RXON\n");
1202 active_rxon->filter_flags &= ~RXON_FILTER_ASSOC_MSK;
1203
1204 rc = iwl4965_send_cmd_pdu(priv, REPLY_RXON,
1205 sizeof(struct iwl4965_rxon_cmd),
1206 &priv->active_rxon);
1207
1208 /* If the mask clearing failed then we set
1209 * active_rxon back to what it was previously */
1210 if (rc) {
1211 active_rxon->filter_flags |= RXON_FILTER_ASSOC_MSK;
1212 IWL_ERROR("Error clearing ASSOC_MSK on current "
1213 "configuration (%d).\n", rc);
1214 return rc;
1215 }
1216 }
1217
1218 IWL_DEBUG_INFO("Sending RXON\n"
1219 "* with%s RXON_FILTER_ASSOC_MSK\n"
1220 "* channel = %d\n"
1221 "* bssid = %s\n",
1222 ((priv->staging_rxon.filter_flags &
1223 RXON_FILTER_ASSOC_MSK) ? "" : "out"),
1224 le16_to_cpu(priv->staging_rxon.channel),
1225 print_mac(mac, priv->staging_rxon.bssid_addr));
1226
1227 /* Apply the new configuration */
1228 rc = iwl4965_send_cmd_pdu(priv, REPLY_RXON,
1229 sizeof(struct iwl4965_rxon_cmd), &priv->staging_rxon);
1230 if (rc) {
1231 IWL_ERROR("Error setting new configuration (%d).\n", rc);
1232 return rc;
1233 }
1234
1235 iwl4965_clear_stations_table(priv);
1236
1237 #ifdef CONFIG_IWL4965_SENSITIVITY
1238 if (!priv->error_recovering)
1239 priv->start_calib = 0;
1240
1241 priv->sensitivity_data.state = IWL_SENS_CALIB_NEED_REINIT;
1242 iwl4965_init_sensitivity(priv, CMD_ASYNC, 1);
1243 #endif /* CONFIG_IWL4965_SENSITIVITY */
1244
1245 memcpy(active_rxon, &priv->staging_rxon, sizeof(*active_rxon));
1246
1247 /* If we issue a new RXON command which required a tune then we must
1248 * send a new TXPOWER command or we won't be able to Tx any frames */
1249 rc = iwl4965_hw_reg_send_txpower(priv);
1250 if (rc) {
1251 IWL_ERROR("Error setting Tx power (%d).\n", rc);
1252 return rc;
1253 }
1254
1255 /* Add the broadcast address so we can send broadcast frames */
1256 if (iwl4965_rxon_add_station(priv, iwl4965_broadcast_addr, 0) ==
1257 IWL_INVALID_STATION) {
1258 IWL_ERROR("Error adding BROADCAST address for transmit.\n");
1259 return -EIO;
1260 }
1261
1262 /* If we have set the ASSOC_MSK and we are in BSS mode then
1263 * add the IWL_AP_ID to the station rate table */
1264 if (iwl4965_is_associated(priv) &&
1265 (priv->iw_mode == IEEE80211_IF_TYPE_STA)) {
1266 if (iwl4965_rxon_add_station(priv, priv->active_rxon.bssid_addr, 1)
1267 == IWL_INVALID_STATION) {
1268 IWL_ERROR("Error adding AP address for transmit.\n");
1269 return -EIO;
1270 }
1271 priv->assoc_station_added = 1;
1272 }
1273
1274 return 0;
1275 }
1276
1277 static int iwl4965_send_bt_config(struct iwl4965_priv *priv)
1278 {
1279 struct iwl4965_bt_cmd bt_cmd = {
1280 .flags = 3,
1281 .lead_time = 0xAA,
1282 .max_kill = 1,
1283 .kill_ack_mask = 0,
1284 .kill_cts_mask = 0,
1285 };
1286
1287 return iwl4965_send_cmd_pdu(priv, REPLY_BT_CONFIG,
1288 sizeof(struct iwl4965_bt_cmd), &bt_cmd);
1289 }
1290
1291 static int iwl4965_send_scan_abort(struct iwl4965_priv *priv)
1292 {
1293 int rc = 0;
1294 struct iwl4965_rx_packet *res;
1295 struct iwl4965_host_cmd cmd = {
1296 .id = REPLY_SCAN_ABORT_CMD,
1297 .meta.flags = CMD_WANT_SKB,
1298 };
1299
1300 /* If there isn't a scan actively going on in the hardware
1301 * then we are in between scan bands and not actually
1302 * actively scanning, so don't send the abort command */
1303 if (!test_bit(STATUS_SCAN_HW, &priv->status)) {
1304 clear_bit(STATUS_SCAN_ABORTING, &priv->status);
1305 return 0;
1306 }
1307
1308 rc = iwl4965_send_cmd_sync(priv, &cmd);
1309 if (rc) {
1310 clear_bit(STATUS_SCAN_ABORTING, &priv->status);
1311 return rc;
1312 }
1313
1314 res = (struct iwl4965_rx_packet *)cmd.meta.u.skb->data;
1315 if (res->u.status != CAN_ABORT_STATUS) {
1316 /* The scan abort will return 1 for success or
1317 * 2 for "failure". A failure condition can be
1318 * due to simply not being in an active scan which
1319 * can occur if we send the scan abort before we
1320 * the microcode has notified us that a scan is
1321 * completed. */
1322 IWL_DEBUG_INFO("SCAN_ABORT returned %d.\n", res->u.status);
1323 clear_bit(STATUS_SCAN_ABORTING, &priv->status);
1324 clear_bit(STATUS_SCAN_HW, &priv->status);
1325 }
1326
1327 dev_kfree_skb_any(cmd.meta.u.skb);
1328
1329 return rc;
1330 }
1331
1332 static int iwl4965_card_state_sync_callback(struct iwl4965_priv *priv,
1333 struct iwl4965_cmd *cmd,
1334 struct sk_buff *skb)
1335 {
1336 return 1;
1337 }
1338
1339 /*
1340 * CARD_STATE_CMD
1341 *
1342 * Use: Sets the device's internal card state to enable, disable, or halt
1343 *
1344 * When in the 'enable' state the card operates as normal.
1345 * When in the 'disable' state, the card enters into a low power mode.
1346 * When in the 'halt' state, the card is shut down and must be fully
1347 * restarted to come back on.
1348 */
1349 static int iwl4965_send_card_state(struct iwl4965_priv *priv, u32 flags, u8 meta_flag)
1350 {
1351 struct iwl4965_host_cmd cmd = {
1352 .id = REPLY_CARD_STATE_CMD,
1353 .len = sizeof(u32),
1354 .data = &flags,
1355 .meta.flags = meta_flag,
1356 };
1357
1358 if (meta_flag & CMD_ASYNC)
1359 cmd.meta.u.callback = iwl4965_card_state_sync_callback;
1360
1361 return iwl4965_send_cmd(priv, &cmd);
1362 }
1363
1364 static int iwl4965_add_sta_sync_callback(struct iwl4965_priv *priv,
1365 struct iwl4965_cmd *cmd, struct sk_buff *skb)
1366 {
1367 struct iwl4965_rx_packet *res = NULL;
1368
1369 if (!skb) {
1370 IWL_ERROR("Error: Response NULL in REPLY_ADD_STA.\n");
1371 return 1;
1372 }
1373
1374 res = (struct iwl4965_rx_packet *)skb->data;
1375 if (res->hdr.flags & IWL_CMD_FAILED_MSK) {
1376 IWL_ERROR("Bad return from REPLY_ADD_STA (0x%08X)\n",
1377 res->hdr.flags);
1378 return 1;
1379 }
1380
1381 switch (res->u.add_sta.status) {
1382 case ADD_STA_SUCCESS_MSK:
1383 break;
1384 default:
1385 break;
1386 }
1387
1388 /* We didn't cache the SKB; let the caller free it */
1389 return 1;
1390 }
1391
1392 int iwl4965_send_add_station(struct iwl4965_priv *priv,
1393 struct iwl4965_addsta_cmd *sta, u8 flags)
1394 {
1395 struct iwl4965_rx_packet *res = NULL;
1396 int rc = 0;
1397 struct iwl4965_host_cmd cmd = {
1398 .id = REPLY_ADD_STA,
1399 .len = sizeof(struct iwl4965_addsta_cmd),
1400 .meta.flags = flags,
1401 .data = sta,
1402 };
1403
1404 if (flags & CMD_ASYNC)
1405 cmd.meta.u.callback = iwl4965_add_sta_sync_callback;
1406 else
1407 cmd.meta.flags |= CMD_WANT_SKB;
1408
1409 rc = iwl4965_send_cmd(priv, &cmd);
1410
1411 if (rc || (flags & CMD_ASYNC))
1412 return rc;
1413
1414 res = (struct iwl4965_rx_packet *)cmd.meta.u.skb->data;
1415 if (res->hdr.flags & IWL_CMD_FAILED_MSK) {
1416 IWL_ERROR("Bad return from REPLY_ADD_STA (0x%08X)\n",
1417 res->hdr.flags);
1418 rc = -EIO;
1419 }
1420
1421 if (rc == 0) {
1422 switch (res->u.add_sta.status) {
1423 case ADD_STA_SUCCESS_MSK:
1424 IWL_DEBUG_INFO("REPLY_ADD_STA PASSED\n");
1425 break;
1426 default:
1427 rc = -EIO;
1428 IWL_WARNING("REPLY_ADD_STA failed\n");
1429 break;
1430 }
1431 }
1432
1433 priv->alloc_rxb_skb--;
1434 dev_kfree_skb_any(cmd.meta.u.skb);
1435
1436 return rc;
1437 }
1438
1439 static int iwl4965_update_sta_key_info(struct iwl4965_priv *priv,
1440 struct ieee80211_key_conf *keyconf,
1441 u8 sta_id)
1442 {
1443 unsigned long flags;
1444 __le16 key_flags = 0;
1445
1446 switch (keyconf->alg) {
1447 case ALG_CCMP:
1448 key_flags |= STA_KEY_FLG_CCMP;
1449 key_flags |= cpu_to_le16(
1450 keyconf->keyidx << STA_KEY_FLG_KEYID_POS);
1451 key_flags &= ~STA_KEY_FLG_INVALID;
1452 break;
1453 case ALG_TKIP:
1454 case ALG_WEP:
1455 default:
1456 return -EINVAL;
1457 }
1458 spin_lock_irqsave(&priv->sta_lock, flags);
1459 priv->stations[sta_id].keyinfo.alg = keyconf->alg;
1460 priv->stations[sta_id].keyinfo.keylen = keyconf->keylen;
1461 memcpy(priv->stations[sta_id].keyinfo.key, keyconf->key,
1462 keyconf->keylen);
1463
1464 memcpy(priv->stations[sta_id].sta.key.key, keyconf->key,
1465 keyconf->keylen);
1466 priv->stations[sta_id].sta.key.key_flags = key_flags;
1467 priv->stations[sta_id].sta.sta.modify_mask = STA_MODIFY_KEY_MASK;
1468 priv->stations[sta_id].sta.mode = STA_CONTROL_MODIFY_MSK;
1469
1470 spin_unlock_irqrestore(&priv->sta_lock, flags);
1471
1472 IWL_DEBUG_INFO("hwcrypto: modify ucode station key info\n");
1473 iwl4965_send_add_station(priv, &priv->stations[sta_id].sta, 0);
1474 return 0;
1475 }
1476
1477 static int iwl4965_clear_sta_key_info(struct iwl4965_priv *priv, u8 sta_id)
1478 {
1479 unsigned long flags;
1480
1481 spin_lock_irqsave(&priv->sta_lock, flags);
1482 memset(&priv->stations[sta_id].keyinfo, 0, sizeof(struct iwl4965_hw_key));
1483 memset(&priv->stations[sta_id].sta.key, 0, sizeof(struct iwl4965_keyinfo));
1484 priv->stations[sta_id].sta.key.key_flags = STA_KEY_FLG_NO_ENC;
1485 priv->stations[sta_id].sta.sta.modify_mask = STA_MODIFY_KEY_MASK;
1486 priv->stations[sta_id].sta.mode = STA_CONTROL_MODIFY_MSK;
1487 spin_unlock_irqrestore(&priv->sta_lock, flags);
1488
1489 IWL_DEBUG_INFO("hwcrypto: clear ucode station key info\n");
1490 iwl4965_send_add_station(priv, &priv->stations[sta_id].sta, 0);
1491 return 0;
1492 }
1493
1494 static void iwl4965_clear_free_frames(struct iwl4965_priv *priv)
1495 {
1496 struct list_head *element;
1497
1498 IWL_DEBUG_INFO("%d frames on pre-allocated heap on clear.\n",
1499 priv->frames_count);
1500
1501 while (!list_empty(&priv->free_frames)) {
1502 element = priv->free_frames.next;
1503 list_del(element);
1504 kfree(list_entry(element, struct iwl4965_frame, list));
1505 priv->frames_count--;
1506 }
1507
1508 if (priv->frames_count) {
1509 IWL_WARNING("%d frames still in use. Did we lose one?\n",
1510 priv->frames_count);
1511 priv->frames_count = 0;
1512 }
1513 }
1514
1515 static struct iwl4965_frame *iwl4965_get_free_frame(struct iwl4965_priv *priv)
1516 {
1517 struct iwl4965_frame *frame;
1518 struct list_head *element;
1519 if (list_empty(&priv->free_frames)) {
1520 frame = kzalloc(sizeof(*frame), GFP_KERNEL);
1521 if (!frame) {
1522 IWL_ERROR("Could not allocate frame!\n");
1523 return NULL;
1524 }
1525
1526 priv->frames_count++;
1527 return frame;
1528 }
1529
1530 element = priv->free_frames.next;
1531 list_del(element);
1532 return list_entry(element, struct iwl4965_frame, list);
1533 }
1534
1535 static void iwl4965_free_frame(struct iwl4965_priv *priv, struct iwl4965_frame *frame)
1536 {
1537 memset(frame, 0, sizeof(*frame));
1538 list_add(&frame->list, &priv->free_frames);
1539 }
1540
1541 unsigned int iwl4965_fill_beacon_frame(struct iwl4965_priv *priv,
1542 struct ieee80211_hdr *hdr,
1543 const u8 *dest, int left)
1544 {
1545
1546 if (!iwl4965_is_associated(priv) || !priv->ibss_beacon ||
1547 ((priv->iw_mode != IEEE80211_IF_TYPE_IBSS) &&
1548 (priv->iw_mode != IEEE80211_IF_TYPE_AP)))
1549 return 0;
1550
1551 if (priv->ibss_beacon->len > left)
1552 return 0;
1553
1554 memcpy(hdr, priv->ibss_beacon->data, priv->ibss_beacon->len);
1555
1556 return priv->ibss_beacon->len;
1557 }
1558
1559 int iwl4965_rate_index_from_plcp(int plcp)
1560 {
1561 int i = 0;
1562
1563 /* 4965 HT rate format */
1564 if (plcp & RATE_MCS_HT_MSK) {
1565 i = (plcp & 0xff);
1566
1567 if (i >= IWL_RATE_MIMO_6M_PLCP)
1568 i = i - IWL_RATE_MIMO_6M_PLCP;
1569
1570 i += IWL_FIRST_OFDM_RATE;
1571 /* skip 9M not supported in ht*/
1572 if (i >= IWL_RATE_9M_INDEX)
1573 i += 1;
1574 if ((i >= IWL_FIRST_OFDM_RATE) &&
1575 (i <= IWL_LAST_OFDM_RATE))
1576 return i;
1577
1578 /* 4965 legacy rate format, search for match in table */
1579 } else {
1580 for (i = 0; i < ARRAY_SIZE(iwl4965_rates); i++)
1581 if (iwl4965_rates[i].plcp == (plcp &0xFF))
1582 return i;
1583 }
1584 return -1;
1585 }
1586
1587 static u8 iwl4965_rate_get_lowest_plcp(int rate_mask)
1588 {
1589 u8 i;
1590
1591 for (i = IWL_RATE_1M_INDEX; i != IWL_RATE_INVALID;
1592 i = iwl4965_rates[i].next_ieee) {
1593 if (rate_mask & (1 << i))
1594 return iwl4965_rates[i].plcp;
1595 }
1596
1597 return IWL_RATE_INVALID;
1598 }
1599
1600 static int iwl4965_send_beacon_cmd(struct iwl4965_priv *priv)
1601 {
1602 struct iwl4965_frame *frame;
1603 unsigned int frame_size;
1604 int rc;
1605 u8 rate;
1606
1607 frame = iwl4965_get_free_frame(priv);
1608
1609 if (!frame) {
1610 IWL_ERROR("Could not obtain free frame buffer for beacon "
1611 "command.\n");
1612 return -ENOMEM;
1613 }
1614
1615 if (!(priv->staging_rxon.flags & RXON_FLG_BAND_24G_MSK)) {
1616 rate = iwl4965_rate_get_lowest_plcp(priv->active_rate_basic &
1617 0xFF0);
1618 if (rate == IWL_INVALID_RATE)
1619 rate = IWL_RATE_6M_PLCP;
1620 } else {
1621 rate = iwl4965_rate_get_lowest_plcp(priv->active_rate_basic & 0xF);
1622 if (rate == IWL_INVALID_RATE)
1623 rate = IWL_RATE_1M_PLCP;
1624 }
1625
1626 frame_size = iwl4965_hw_get_beacon_cmd(priv, frame, rate);
1627
1628 rc = iwl4965_send_cmd_pdu(priv, REPLY_TX_BEACON, frame_size,
1629 &frame->u.cmd[0]);
1630
1631 iwl4965_free_frame(priv, frame);
1632
1633 return rc;
1634 }
1635
1636 /******************************************************************************
1637 *
1638 * EEPROM related functions
1639 *
1640 ******************************************************************************/
1641
1642 static void get_eeprom_mac(struct iwl4965_priv *priv, u8 *mac)
1643 {
1644 memcpy(mac, priv->eeprom.mac_address, 6);
1645 }
1646
1647 static inline void iwl4965_eeprom_release_semaphore(struct iwl4965_priv *priv)
1648 {
1649 iwl4965_clear_bit(priv, CSR_HW_IF_CONFIG_REG,
1650 CSR_HW_IF_CONFIG_REG_BIT_EEPROM_OWN_SEM);
1651 }
1652
1653 /**
1654 * iwl4965_eeprom_init - read EEPROM contents
1655 *
1656 * Load the EEPROM contents from adapter into priv->eeprom
1657 *
1658 * NOTE: This routine uses the non-debug IO access functions.
1659 */
1660 int iwl4965_eeprom_init(struct iwl4965_priv *priv)
1661 {
1662 u16 *e = (u16 *)&priv->eeprom;
1663 u32 gp = iwl4965_read32(priv, CSR_EEPROM_GP);
1664 u32 r;
1665 int sz = sizeof(priv->eeprom);
1666 int rc;
1667 int i;
1668 u16 addr;
1669
1670 /* The EEPROM structure has several padding buffers within it
1671 * and when adding new EEPROM maps is subject to programmer errors
1672 * which may be very difficult to identify without explicitly
1673 * checking the resulting size of the eeprom map. */
1674 BUILD_BUG_ON(sizeof(priv->eeprom) != IWL_EEPROM_IMAGE_SIZE);
1675
1676 if ((gp & CSR_EEPROM_GP_VALID_MSK) == CSR_EEPROM_GP_BAD_SIGNATURE) {
1677 IWL_ERROR("EEPROM not found, EEPROM_GP=0x%08x", gp);
1678 return -ENOENT;
1679 }
1680
1681 /* Make sure driver (instead of uCode) is allowed to read EEPROM */
1682 rc = iwl4965_eeprom_acquire_semaphore(priv);
1683 if (rc < 0) {
1684 IWL_ERROR("Failed to acquire EEPROM semaphore.\n");
1685 return -ENOENT;
1686 }
1687
1688 /* eeprom is an array of 16bit values */
1689 for (addr = 0; addr < sz; addr += sizeof(u16)) {
1690 _iwl4965_write32(priv, CSR_EEPROM_REG, addr << 1);
1691 _iwl4965_clear_bit(priv, CSR_EEPROM_REG, CSR_EEPROM_REG_BIT_CMD);
1692
1693 for (i = 0; i < IWL_EEPROM_ACCESS_TIMEOUT;
1694 i += IWL_EEPROM_ACCESS_DELAY) {
1695 r = _iwl4965_read_direct32(priv, CSR_EEPROM_REG);
1696 if (r & CSR_EEPROM_REG_READ_VALID_MSK)
1697 break;
1698 udelay(IWL_EEPROM_ACCESS_DELAY);
1699 }
1700
1701 if (!(r & CSR_EEPROM_REG_READ_VALID_MSK)) {
1702 IWL_ERROR("Time out reading EEPROM[%d]", addr);
1703 rc = -ETIMEDOUT;
1704 goto done;
1705 }
1706 e[addr / 2] = le16_to_cpu((__force __le16)(r >> 16));
1707 }
1708 rc = 0;
1709
1710 done:
1711 iwl4965_eeprom_release_semaphore(priv);
1712 return rc;
1713 }
1714
1715 /******************************************************************************
1716 *
1717 * Misc. internal state and helper functions
1718 *
1719 ******************************************************************************/
1720 #ifdef CONFIG_IWL4965_DEBUG
1721
1722 /**
1723 * iwl4965_report_frame - dump frame to syslog during debug sessions
1724 *
1725 * You may hack this function to show different aspects of received frames,
1726 * including selective frame dumps.
1727 * group100 parameter selects whether to show 1 out of 100 good frames.
1728 *
1729 * TODO: This was originally written for 3945, need to audit for
1730 * proper operation with 4965.
1731 */
1732 void iwl4965_report_frame(struct iwl4965_priv *priv,
1733 struct iwl4965_rx_packet *pkt,
1734 struct ieee80211_hdr *header, int group100)
1735 {
1736 u32 to_us;
1737 u32 print_summary = 0;
1738 u32 print_dump = 0; /* set to 1 to dump all frames' contents */
1739 u32 hundred = 0;
1740 u32 dataframe = 0;
1741 u16 fc;
1742 u16 seq_ctl;
1743 u16 channel;
1744 u16 phy_flags;
1745 int rate_sym;
1746 u16 length;
1747 u16 status;
1748 u16 bcn_tmr;
1749 u32 tsf_low;
1750 u64 tsf;
1751 u8 rssi;
1752 u8 agc;
1753 u16 sig_avg;
1754 u16 noise_diff;
1755 struct iwl4965_rx_frame_stats *rx_stats = IWL_RX_STATS(pkt);
1756 struct iwl4965_rx_frame_hdr *rx_hdr = IWL_RX_HDR(pkt);
1757 struct iwl4965_rx_frame_end *rx_end = IWL_RX_END(pkt);
1758 u8 *data = IWL_RX_DATA(pkt);
1759
1760 /* MAC header */
1761 fc = le16_to_cpu(header->frame_control);
1762 seq_ctl = le16_to_cpu(header->seq_ctrl);
1763
1764 /* metadata */
1765 channel = le16_to_cpu(rx_hdr->channel);
1766 phy_flags = le16_to_cpu(rx_hdr->phy_flags);
1767 rate_sym = rx_hdr->rate;
1768 length = le16_to_cpu(rx_hdr->len);
1769
1770 /* end-of-frame status and timestamp */
1771 status = le32_to_cpu(rx_end->status);
1772 bcn_tmr = le32_to_cpu(rx_end->beacon_timestamp);
1773 tsf_low = le64_to_cpu(rx_end->timestamp) & 0x0ffffffff;
1774 tsf = le64_to_cpu(rx_end->timestamp);
1775
1776 /* signal statistics */
1777 rssi = rx_stats->rssi;
1778 agc = rx_stats->agc;
1779 sig_avg = le16_to_cpu(rx_stats->sig_avg);
1780 noise_diff = le16_to_cpu(rx_stats->noise_diff);
1781
1782 to_us = !compare_ether_addr(header->addr1, priv->mac_addr);
1783
1784 /* if data frame is to us and all is good,
1785 * (optionally) print summary for only 1 out of every 100 */
1786 if (to_us && (fc & ~IEEE80211_FCTL_PROTECTED) ==
1787 (IEEE80211_FCTL_FROMDS | IEEE80211_FTYPE_DATA)) {
1788 dataframe = 1;
1789 if (!group100)
1790 print_summary = 1; /* print each frame */
1791 else if (priv->framecnt_to_us < 100) {
1792 priv->framecnt_to_us++;
1793 print_summary = 0;
1794 } else {
1795 priv->framecnt_to_us = 0;
1796 print_summary = 1;
1797 hundred = 1;
1798 }
1799 } else {
1800 /* print summary for all other frames */
1801 print_summary = 1;
1802 }
1803
1804 if (print_summary) {
1805 char *title;
1806 u32 rate;
1807
1808 if (hundred)
1809 title = "100Frames";
1810 else if (fc & IEEE80211_FCTL_RETRY)
1811 title = "Retry";
1812 else if (ieee80211_is_assoc_response(fc))
1813 title = "AscRsp";
1814 else if (ieee80211_is_reassoc_response(fc))
1815 title = "RasRsp";
1816 else if (ieee80211_is_probe_response(fc)) {
1817 title = "PrbRsp";
1818 print_dump = 1; /* dump frame contents */
1819 } else if (ieee80211_is_beacon(fc)) {
1820 title = "Beacon";
1821 print_dump = 1; /* dump frame contents */
1822 } else if (ieee80211_is_atim(fc))
1823 title = "ATIM";
1824 else if (ieee80211_is_auth(fc))
1825 title = "Auth";
1826 else if (ieee80211_is_deauth(fc))
1827 title = "DeAuth";
1828 else if (ieee80211_is_disassoc(fc))
1829 title = "DisAssoc";
1830 else
1831 title = "Frame";
1832
1833 rate = iwl4965_rate_index_from_plcp(rate_sym);
1834 if (rate == -1)
1835 rate = 0;
1836 else
1837 rate = iwl4965_rates[rate].ieee / 2;
1838
1839 /* print frame summary.
1840 * MAC addresses show just the last byte (for brevity),
1841 * but you can hack it to show more, if you'd like to. */
1842 if (dataframe)
1843 IWL_DEBUG_RX("%s: mhd=0x%04x, dst=0x%02x, "
1844 "len=%u, rssi=%d, chnl=%d, rate=%u, \n",
1845 title, fc, header->addr1[5],
1846 length, rssi, channel, rate);
1847 else {
1848 /* src/dst addresses assume managed mode */
1849 IWL_DEBUG_RX("%s: 0x%04x, dst=0x%02x, "
1850 "src=0x%02x, rssi=%u, tim=%lu usec, "
1851 "phy=0x%02x, chnl=%d\n",
1852 title, fc, header->addr1[5],
1853 header->addr3[5], rssi,
1854 tsf_low - priv->scan_start_tsf,
1855 phy_flags, channel);
1856 }
1857 }
1858 if (print_dump)
1859 iwl4965_print_hex_dump(IWL_DL_RX, data, length);
1860 }
1861 #endif
1862
1863 static void iwl4965_unset_hw_setting(struct iwl4965_priv *priv)
1864 {
1865 if (priv->hw_setting.shared_virt)
1866 pci_free_consistent(priv->pci_dev,
1867 sizeof(struct iwl4965_shared),
1868 priv->hw_setting.shared_virt,
1869 priv->hw_setting.shared_phys);
1870 }
1871
1872 /**
1873 * iwl4965_supported_rate_to_ie - fill in the supported rate in IE field
1874 *
1875 * return : set the bit for each supported rate insert in ie
1876 */
1877 static u16 iwl4965_supported_rate_to_ie(u8 *ie, u16 supported_rate,
1878 u16 basic_rate, int *left)
1879 {
1880 u16 ret_rates = 0, bit;
1881 int i;
1882 u8 *cnt = ie;
1883 u8 *rates = ie + 1;
1884
1885 for (bit = 1, i = 0; i < IWL_RATE_COUNT; i++, bit <<= 1) {
1886 if (bit & supported_rate) {
1887 ret_rates |= bit;
1888 rates[*cnt] = iwl4965_rates[i].ieee |
1889 ((bit & basic_rate) ? 0x80 : 0x00);
1890 (*cnt)++;
1891 (*left)--;
1892 if ((*left <= 0) ||
1893 (*cnt >= IWL_SUPPORTED_RATES_IE_LEN))
1894 break;
1895 }
1896 }
1897
1898 return ret_rates;
1899 }
1900
1901 #ifdef CONFIG_IWL4965_HT
1902 void static iwl4965_set_ht_capab(struct ieee80211_hw *hw,
1903 struct ieee80211_ht_cap *ht_cap,
1904 u8 use_current_config);
1905 #endif
1906
1907 /**
1908 * iwl4965_fill_probe_req - fill in all required fields and IE for probe request
1909 */
1910 static u16 iwl4965_fill_probe_req(struct iwl4965_priv *priv,
1911 struct ieee80211_mgmt *frame,
1912 int left, int is_direct)
1913 {
1914 int len = 0;
1915 u8 *pos = NULL;
1916 u16 active_rates, ret_rates, cck_rates, active_rate_basic;
1917 #ifdef CONFIG_IWL4965_HT
1918 struct ieee80211_hw_mode *mode;
1919 #endif /* CONFIG_IWL4965_HT */
1920
1921 /* Make sure there is enough space for the probe request,
1922 * two mandatory IEs and the data */
1923 left -= 24;
1924 if (left < 0)
1925 return 0;
1926 len += 24;
1927
1928 frame->frame_control = cpu_to_le16(IEEE80211_STYPE_PROBE_REQ);
1929 memcpy(frame->da, iwl4965_broadcast_addr, ETH_ALEN);
1930 memcpy(frame->sa, priv->mac_addr, ETH_ALEN);
1931 memcpy(frame->bssid, iwl4965_broadcast_addr, ETH_ALEN);
1932 frame->seq_ctrl = 0;
1933
1934 /* fill in our indirect SSID IE */
1935 /* ...next IE... */
1936
1937 left -= 2;
1938 if (left < 0)
1939 return 0;
1940 len += 2;
1941 pos = &(frame->u.probe_req.variable[0]);
1942 *pos++ = WLAN_EID_SSID;
1943 *pos++ = 0;
1944
1945 /* fill in our direct SSID IE... */
1946 if (is_direct) {
1947 /* ...next IE... */
1948 left -= 2 + priv->essid_len;
1949 if (left < 0)
1950 return 0;
1951 /* ... fill it in... */
1952 *pos++ = WLAN_EID_SSID;
1953 *pos++ = priv->essid_len;
1954 memcpy(pos, priv->essid, priv->essid_len);
1955 pos += priv->essid_len;
1956 len += 2 + priv->essid_len;
1957 }
1958
1959 /* fill in supported rate */
1960 /* ...next IE... */
1961 left -= 2;
1962 if (left < 0)
1963 return 0;
1964
1965 /* ... fill it in... */
1966 *pos++ = WLAN_EID_SUPP_RATES;
1967 *pos = 0;
1968
1969 /* exclude 60M rate */
1970 active_rates = priv->rates_mask;
1971 active_rates &= ~IWL_RATE_60M_MASK;
1972
1973 active_rate_basic = active_rates & IWL_BASIC_RATES_MASK;
1974
1975 cck_rates = IWL_CCK_RATES_MASK & active_rates;
1976 ret_rates = iwl4965_supported_rate_to_ie(pos, cck_rates,
1977 active_rate_basic, &left);
1978 active_rates &= ~ret_rates;
1979
1980 ret_rates = iwl4965_supported_rate_to_ie(pos, active_rates,
1981 active_rate_basic, &left);
1982 active_rates &= ~ret_rates;
1983
1984 len += 2 + *pos;
1985 pos += (*pos) + 1;
1986 if (active_rates == 0)
1987 goto fill_end;
1988
1989 /* fill in supported extended rate */
1990 /* ...next IE... */
1991 left -= 2;
1992 if (left < 0)
1993 return 0;
1994 /* ... fill it in... */
1995 *pos++ = WLAN_EID_EXT_SUPP_RATES;
1996 *pos = 0;
1997 iwl4965_supported_rate_to_ie(pos, active_rates,
1998 active_rate_basic, &left);
1999 if (*pos > 0)
2000 len += 2 + *pos;
2001
2002 #ifdef CONFIG_IWL4965_HT
2003 mode = priv->hw->conf.mode;
2004 if (mode->ht_info.ht_supported) {
2005 pos += (*pos) + 1;
2006 *pos++ = WLAN_EID_HT_CAPABILITY;
2007 *pos++ = sizeof(struct ieee80211_ht_cap);
2008 iwl4965_set_ht_capab(priv->hw,
2009 (struct ieee80211_ht_cap *)pos, 0);
2010 len += 2 + sizeof(struct ieee80211_ht_cap);
2011 }
2012 #endif /*CONFIG_IWL4965_HT */
2013
2014 fill_end:
2015 return (u16)len;
2016 }
2017
2018 /*
2019 * QoS support
2020 */
2021 #ifdef CONFIG_IWL4965_QOS
2022 static int iwl4965_send_qos_params_command(struct iwl4965_priv *priv,
2023 struct iwl4965_qosparam_cmd *qos)
2024 {
2025
2026 return iwl4965_send_cmd_pdu(priv, REPLY_QOS_PARAM,
2027 sizeof(struct iwl4965_qosparam_cmd), qos);
2028 }
2029
2030 static void iwl4965_reset_qos(struct iwl4965_priv *priv)
2031 {
2032 u16 cw_min = 15;
2033 u16 cw_max = 1023;
2034 u8 aifs = 2;
2035 u8 is_legacy = 0;
2036 unsigned long flags;
2037 int i;
2038
2039 spin_lock_irqsave(&priv->lock, flags);
2040 priv->qos_data.qos_active = 0;
2041
2042 if (priv->iw_mode == IEEE80211_IF_TYPE_IBSS) {
2043 if (priv->qos_data.qos_enable)
2044 priv->qos_data.qos_active = 1;
2045 if (!(priv->active_rate & 0xfff0)) {
2046 cw_min = 31;
2047 is_legacy = 1;
2048 }
2049 } else if (priv->iw_mode == IEEE80211_IF_TYPE_AP) {
2050 if (priv->qos_data.qos_enable)
2051 priv->qos_data.qos_active = 1;
2052 } else if (!(priv->staging_rxon.flags & RXON_FLG_SHORT_SLOT_MSK)) {
2053 cw_min = 31;
2054 is_legacy = 1;
2055 }
2056
2057 if (priv->qos_data.qos_active)
2058 aifs = 3;
2059
2060 priv->qos_data.def_qos_parm.ac[0].cw_min = cpu_to_le16(cw_min);
2061 priv->qos_data.def_qos_parm.ac[0].cw_max = cpu_to_le16(cw_max);
2062 priv->qos_data.def_qos_parm.ac[0].aifsn = aifs;
2063 priv->qos_data.def_qos_parm.ac[0].edca_txop = 0;
2064 priv->qos_data.def_qos_parm.ac[0].reserved1 = 0;
2065
2066 if (priv->qos_data.qos_active) {
2067 i = 1;
2068 priv->qos_data.def_qos_parm.ac[i].cw_min = cpu_to_le16(cw_min);
2069 priv->qos_data.def_qos_parm.ac[i].cw_max = cpu_to_le16(cw_max);
2070 priv->qos_data.def_qos_parm.ac[i].aifsn = 7;
2071 priv->qos_data.def_qos_parm.ac[i].edca_txop = 0;
2072 priv->qos_data.def_qos_parm.ac[i].reserved1 = 0;
2073
2074 i = 2;
2075 priv->qos_data.def_qos_parm.ac[i].cw_min =
2076 cpu_to_le16((cw_min + 1) / 2 - 1);
2077 priv->qos_data.def_qos_parm.ac[i].cw_max =
2078 cpu_to_le16(cw_max);
2079 priv->qos_data.def_qos_parm.ac[i].aifsn = 2;
2080 if (is_legacy)
2081 priv->qos_data.def_qos_parm.ac[i].edca_txop =
2082 cpu_to_le16(6016);
2083 else
2084 priv->qos_data.def_qos_parm.ac[i].edca_txop =
2085 cpu_to_le16(3008);
2086 priv->qos_data.def_qos_parm.ac[i].reserved1 = 0;
2087
2088 i = 3;
2089 priv->qos_data.def_qos_parm.ac[i].cw_min =
2090 cpu_to_le16((cw_min + 1) / 4 - 1);
2091 priv->qos_data.def_qos_parm.ac[i].cw_max =
2092 cpu_to_le16((cw_max + 1) / 2 - 1);
2093 priv->qos_data.def_qos_parm.ac[i].aifsn = 2;
2094 priv->qos_data.def_qos_parm.ac[i].reserved1 = 0;
2095 if (is_legacy)
2096 priv->qos_data.def_qos_parm.ac[i].edca_txop =
2097 cpu_to_le16(3264);
2098 else
2099 priv->qos_data.def_qos_parm.ac[i].edca_txop =
2100 cpu_to_le16(1504);
2101 } else {
2102 for (i = 1; i < 4; i++) {
2103 priv->qos_data.def_qos_parm.ac[i].cw_min =
2104 cpu_to_le16(cw_min);
2105 priv->qos_data.def_qos_parm.ac[i].cw_max =
2106 cpu_to_le16(cw_max);
2107 priv->qos_data.def_qos_parm.ac[i].aifsn = aifs;
2108 priv->qos_data.def_qos_parm.ac[i].edca_txop = 0;
2109 priv->qos_data.def_qos_parm.ac[i].reserved1 = 0;
2110 }
2111 }
2112 IWL_DEBUG_QOS("set QoS to default \n");
2113
2114 spin_unlock_irqrestore(&priv->lock, flags);
2115 }
2116
2117 static void iwl4965_activate_qos(struct iwl4965_priv *priv, u8 force)
2118 {
2119 unsigned long flags;
2120
2121 if (test_bit(STATUS_EXIT_PENDING, &priv->status))
2122 return;
2123
2124 if (!priv->qos_data.qos_enable)
2125 return;
2126
2127 spin_lock_irqsave(&priv->lock, flags);
2128 priv->qos_data.def_qos_parm.qos_flags = 0;
2129
2130 if (priv->qos_data.qos_cap.q_AP.queue_request &&
2131 !priv->qos_data.qos_cap.q_AP.txop_request)
2132 priv->qos_data.def_qos_parm.qos_flags |=
2133 QOS_PARAM_FLG_TXOP_TYPE_MSK;
2134 if (priv->qos_data.qos_active)
2135 priv->qos_data.def_qos_parm.qos_flags |=
2136 QOS_PARAM_FLG_UPDATE_EDCA_MSK;
2137
2138 #ifdef CONFIG_IWL4965_HT
2139 if (priv->current_ht_config.is_ht)
2140 priv->qos_data.def_qos_parm.qos_flags |= QOS_PARAM_FLG_TGN_MSK;
2141 #endif /* CONFIG_IWL4965_HT */
2142
2143 spin_unlock_irqrestore(&priv->lock, flags);
2144
2145 if (force || iwl4965_is_associated(priv)) {
2146 IWL_DEBUG_QOS("send QoS cmd with Qos active=%d FLAGS=0x%X\n",
2147 priv->qos_data.qos_active,
2148 priv->qos_data.def_qos_parm.qos_flags);
2149
2150 iwl4965_send_qos_params_command(priv,
2151 &(priv->qos_data.def_qos_parm));
2152 }
2153 }
2154
2155 #endif /* CONFIG_IWL4965_QOS */
2156 /*
2157 * Power management (not Tx power!) functions
2158 */
2159 #define MSEC_TO_USEC 1024
2160
2161 #define NOSLP __constant_cpu_to_le16(0), 0, 0
2162 #define SLP IWL_POWER_DRIVER_ALLOW_SLEEP_MSK, 0, 0
2163 #define SLP_TIMEOUT(T) __constant_cpu_to_le32((T) * MSEC_TO_USEC)
2164 #define SLP_VEC(X0, X1, X2, X3, X4) {__constant_cpu_to_le32(X0), \
2165 __constant_cpu_to_le32(X1), \
2166 __constant_cpu_to_le32(X2), \
2167 __constant_cpu_to_le32(X3), \
2168 __constant_cpu_to_le32(X4)}
2169
2170
2171 /* default power management (not Tx power) table values */
2172 /* for tim 0-10 */
2173 static struct iwl4965_power_vec_entry range_0[IWL_POWER_AC] = {
2174 {{NOSLP, SLP_TIMEOUT(0), SLP_TIMEOUT(0), SLP_VEC(0, 0, 0, 0, 0)}, 0},
2175 {{SLP, SLP_TIMEOUT(200), SLP_TIMEOUT(500), SLP_VEC(1, 2, 3, 4, 4)}, 0},
2176 {{SLP, SLP_TIMEOUT(200), SLP_TIMEOUT(300), SLP_VEC(2, 4, 6, 7, 7)}, 0},
2177 {{SLP, SLP_TIMEOUT(50), SLP_TIMEOUT(100), SLP_VEC(2, 6, 9, 9, 10)}, 0},
2178 {{SLP, SLP_TIMEOUT(50), SLP_TIMEOUT(25), SLP_VEC(2, 7, 9, 9, 10)}, 1},
2179 {{SLP, SLP_TIMEOUT(25), SLP_TIMEOUT(25), SLP_VEC(4, 7, 10, 10, 10)}, 1}
2180 };
2181
2182 /* for tim > 10 */
2183 static struct iwl4965_power_vec_entry range_1[IWL_POWER_AC] = {
2184 {{NOSLP, SLP_TIMEOUT(0), SLP_TIMEOUT(0), SLP_VEC(0, 0, 0, 0, 0)}, 0},
2185 {{SLP, SLP_TIMEOUT(200), SLP_TIMEOUT(500),
2186 SLP_VEC(1, 2, 3, 4, 0xFF)}, 0},
2187 {{SLP, SLP_TIMEOUT(200), SLP_TIMEOUT(300),
2188 SLP_VEC(2, 4, 6, 7, 0xFF)}, 0},
2189 {{SLP, SLP_TIMEOUT(50), SLP_TIMEOUT(100),
2190 SLP_VEC(2, 6, 9, 9, 0xFF)}, 0},
2191 {{SLP, SLP_TIMEOUT(50), SLP_TIMEOUT(25), SLP_VEC(2, 7, 9, 9, 0xFF)}, 0},
2192 {{SLP, SLP_TIMEOUT(25), SLP_TIMEOUT(25),
2193 SLP_VEC(4, 7, 10, 10, 0xFF)}, 0}
2194 };
2195
2196 int iwl4965_power_init_handle(struct iwl4965_priv *priv)
2197 {
2198 int rc = 0, i;
2199 struct iwl4965_power_mgr *pow_data;
2200 int size = sizeof(struct iwl4965_power_vec_entry) * IWL_POWER_AC;
2201 u16 pci_pm;
2202
2203 IWL_DEBUG_POWER("Initialize power \n");
2204
2205 pow_data = &(priv->power_data);
2206
2207 memset(pow_data, 0, sizeof(*pow_data));
2208
2209 pow_data->active_index = IWL_POWER_RANGE_0;
2210 pow_data->dtim_val = 0xffff;
2211
2212 memcpy(&pow_data->pwr_range_0[0], &range_0[0], size);
2213 memcpy(&pow_data->pwr_range_1[0], &range_1[0], size);
2214
2215 rc = pci_read_config_word(priv->pci_dev, PCI_LINK_CTRL, &pci_pm);
2216 if (rc != 0)
2217 return 0;
2218 else {
2219 struct iwl4965_powertable_cmd *cmd;
2220
2221 IWL_DEBUG_POWER("adjust power command flags\n");
2222
2223 for (i = 0; i < IWL_POWER_AC; i++) {
2224 cmd = &pow_data->pwr_range_0[i].cmd;
2225
2226 if (pci_pm & 0x1)
2227 cmd->flags &= ~IWL_POWER_PCI_PM_MSK;
2228 else
2229 cmd->flags |= IWL_POWER_PCI_PM_MSK;
2230 }
2231 }
2232 return rc;
2233 }
2234
2235 static int iwl4965_update_power_cmd(struct iwl4965_priv *priv,
2236 struct iwl4965_powertable_cmd *cmd, u32 mode)
2237 {
2238 int rc = 0, i;
2239 u8 skip;
2240 u32 max_sleep = 0;
2241 struct iwl4965_power_vec_entry *range;
2242 u8 period = 0;
2243 struct iwl4965_power_mgr *pow_data;
2244
2245 if (mode > IWL_POWER_INDEX_5) {
2246 IWL_DEBUG_POWER("Error invalid power mode \n");
2247 return -1;
2248 }
2249 pow_data = &(priv->power_data);
2250
2251 if (pow_data->active_index == IWL_POWER_RANGE_0)
2252 range = &pow_data->pwr_range_0[0];
2253 else
2254 range = &pow_data->pwr_range_1[1];
2255
2256 memcpy(cmd, &range[mode].cmd, sizeof(struct iwl4965_powertable_cmd));
2257
2258 #ifdef IWL_MAC80211_DISABLE
2259 if (priv->assoc_network != NULL) {
2260 unsigned long flags;
2261
2262 period = priv->assoc_network->tim.tim_period;
2263 }
2264 #endif /*IWL_MAC80211_DISABLE */
2265 skip = range[mode].no_dtim;
2266
2267 if (period == 0) {
2268 period = 1;
2269 skip = 0;
2270 }
2271
2272 if (skip == 0) {
2273 max_sleep = period;
2274 cmd->flags &= ~IWL_POWER_SLEEP_OVER_DTIM_MSK;
2275 } else {
2276 __le32 slp_itrvl = cmd->sleep_interval[IWL_POWER_VEC_SIZE - 1];
2277 max_sleep = (le32_to_cpu(slp_itrvl) / period) * period;
2278 cmd->flags |= IWL_POWER_SLEEP_OVER_DTIM_MSK;
2279 }
2280
2281 for (i = 0; i < IWL_POWER_VEC_SIZE; i++) {
2282 if (le32_to_cpu(cmd->sleep_interval[i]) > max_sleep)
2283 cmd->sleep_interval[i] = cpu_to_le32(max_sleep);
2284 }
2285
2286 IWL_DEBUG_POWER("Flags value = 0x%08X\n", cmd->flags);
2287 IWL_DEBUG_POWER("Tx timeout = %u\n", le32_to_cpu(cmd->tx_data_timeout));
2288 IWL_DEBUG_POWER("Rx timeout = %u\n", le32_to_cpu(cmd->rx_data_timeout));
2289 IWL_DEBUG_POWER("Sleep interval vector = { %d , %d , %d , %d , %d }\n",
2290 le32_to_cpu(cmd->sleep_interval[0]),
2291 le32_to_cpu(cmd->sleep_interval[1]),
2292 le32_to_cpu(cmd->sleep_interval[2]),
2293 le32_to_cpu(cmd->sleep_interval[3]),
2294 le32_to_cpu(cmd->sleep_interval[4]));
2295
2296 return rc;
2297 }
2298
2299 static int iwl4965_send_power_mode(struct iwl4965_priv *priv, u32 mode)
2300 {
2301 u32 uninitialized_var(final_mode);
2302 int rc;
2303 struct iwl4965_powertable_cmd cmd;
2304
2305 /* If on battery, set to 3,
2306 * if plugged into AC power, set to CAM ("continuously aware mode"),
2307 * else user level */
2308 switch (mode) {
2309 case IWL_POWER_BATTERY:
2310 final_mode = IWL_POWER_INDEX_3;
2311 break;
2312 case IWL_POWER_AC:
2313 final_mode = IWL_POWER_MODE_CAM;
2314 break;
2315 default:
2316 final_mode = mode;
2317 break;
2318 }
2319
2320 cmd.keep_alive_beacons = 0;
2321
2322 iwl4965_update_power_cmd(priv, &cmd, final_mode);
2323
2324 rc = iwl4965_send_cmd_pdu(priv, POWER_TABLE_CMD, sizeof(cmd), &cmd);
2325
2326 if (final_mode == IWL_POWER_MODE_CAM)
2327 clear_bit(STATUS_POWER_PMI, &priv->status);
2328 else
2329 set_bit(STATUS_POWER_PMI, &priv->status);
2330
2331 return rc;
2332 }
2333
2334 int iwl4965_is_network_packet(struct iwl4965_priv *priv, struct ieee80211_hdr *header)
2335 {
2336 /* Filter incoming packets to determine if they are targeted toward
2337 * this network, discarding packets coming from ourselves */
2338 switch (priv->iw_mode) {
2339 case IEEE80211_IF_TYPE_IBSS: /* Header: Dest. | Source | BSSID */
2340 /* packets from our adapter are dropped (echo) */
2341 if (!compare_ether_addr(header->addr2, priv->mac_addr))
2342 return 0;
2343 /* {broad,multi}cast packets to our IBSS go through */
2344 if (is_multicast_ether_addr(header->addr1))
2345 return !compare_ether_addr(header->addr3, priv->bssid);
2346 /* packets to our adapter go through */
2347 return !compare_ether_addr(header->addr1, priv->mac_addr);
2348 case IEEE80211_IF_TYPE_STA: /* Header: Dest. | AP{BSSID} | Source */
2349 /* packets from our adapter are dropped (echo) */
2350 if (!compare_ether_addr(header->addr3, priv->mac_addr))
2351 return 0;
2352 /* {broad,multi}cast packets to our BSS go through */
2353 if (is_multicast_ether_addr(header->addr1))
2354 return !compare_ether_addr(header->addr2, priv->bssid);
2355 /* packets to our adapter go through */
2356 return !compare_ether_addr(header->addr1, priv->mac_addr);
2357 }
2358
2359 return 1;
2360 }
2361
2362 #define TX_STATUS_ENTRY(x) case TX_STATUS_FAIL_ ## x: return #x
2363
2364 static const char *iwl4965_get_tx_fail_reason(u32 status)
2365 {
2366 switch (status & TX_STATUS_MSK) {
2367 case TX_STATUS_SUCCESS:
2368 return "SUCCESS";
2369 TX_STATUS_ENTRY(SHORT_LIMIT);
2370 TX_STATUS_ENTRY(LONG_LIMIT);
2371 TX_STATUS_ENTRY(FIFO_UNDERRUN);
2372 TX_STATUS_ENTRY(MGMNT_ABORT);
2373 TX_STATUS_ENTRY(NEXT_FRAG);
2374 TX_STATUS_ENTRY(LIFE_EXPIRE);
2375 TX_STATUS_ENTRY(DEST_PS);
2376 TX_STATUS_ENTRY(ABORTED);
2377 TX_STATUS_ENTRY(BT_RETRY);
2378 TX_STATUS_ENTRY(STA_INVALID);
2379 TX_STATUS_ENTRY(FRAG_DROPPED);
2380 TX_STATUS_ENTRY(TID_DISABLE);
2381 TX_STATUS_ENTRY(FRAME_FLUSHED);
2382 TX_STATUS_ENTRY(INSUFFICIENT_CF_POLL);
2383 TX_STATUS_ENTRY(TX_LOCKED);
2384 TX_STATUS_ENTRY(NO_BEACON_ON_RADAR);
2385 }
2386
2387 return "UNKNOWN";
2388 }
2389
2390 /**
2391 * iwl4965_scan_cancel - Cancel any currently executing HW scan
2392 *
2393 * NOTE: priv->mutex is not required before calling this function
2394 */
2395 static int iwl4965_scan_cancel(struct iwl4965_priv *priv)
2396 {
2397 if (!test_bit(STATUS_SCAN_HW, &priv->status)) {
2398 clear_bit(STATUS_SCANNING, &priv->status);
2399 return 0;
2400 }
2401
2402 if (test_bit(STATUS_SCANNING, &priv->status)) {
2403 if (!test_bit(STATUS_SCAN_ABORTING, &priv->status)) {
2404 IWL_DEBUG_SCAN("Queuing scan abort.\n");
2405 set_bit(STATUS_SCAN_ABORTING, &priv->status);
2406 queue_work(priv->workqueue, &priv->abort_scan);
2407
2408 } else
2409 IWL_DEBUG_SCAN("Scan abort already in progress.\n");
2410
2411 return test_bit(STATUS_SCANNING, &priv->status);
2412 }
2413
2414 return 0;
2415 }
2416
2417 /**
2418 * iwl4965_scan_cancel_timeout - Cancel any currently executing HW scan
2419 * @ms: amount of time to wait (in milliseconds) for scan to abort
2420 *
2421 * NOTE: priv->mutex must be held before calling this function
2422 */
2423 static int iwl4965_scan_cancel_timeout(struct iwl4965_priv *priv, unsigned long ms)
2424 {
2425 unsigned long now = jiffies;
2426 int ret;
2427
2428 ret = iwl4965_scan_cancel(priv);
2429 if (ret && ms) {
2430 mutex_unlock(&priv->mutex);
2431 while (!time_after(jiffies, now + msecs_to_jiffies(ms)) &&
2432 test_bit(STATUS_SCANNING, &priv->status))
2433 msleep(1);
2434 mutex_lock(&priv->mutex);
2435
2436 return test_bit(STATUS_SCANNING, &priv->status);
2437 }
2438
2439 return ret;
2440 }
2441
2442 static void iwl4965_sequence_reset(struct iwl4965_priv *priv)
2443 {
2444 /* Reset ieee stats */
2445
2446 /* We don't reset the net_device_stats (ieee->stats) on
2447 * re-association */
2448
2449 priv->last_seq_num = -1;
2450 priv->last_frag_num = -1;
2451 priv->last_packet_time = 0;
2452
2453 iwl4965_scan_cancel(priv);
2454 }
2455
2456 #define MAX_UCODE_BEACON_INTERVAL 4096
2457 #define INTEL_CONN_LISTEN_INTERVAL __constant_cpu_to_le16(0xA)
2458
2459 static __le16 iwl4965_adjust_beacon_interval(u16 beacon_val)
2460 {
2461 u16 new_val = 0;
2462 u16 beacon_factor = 0;
2463
2464 beacon_factor =
2465 (beacon_val + MAX_UCODE_BEACON_INTERVAL)
2466 / MAX_UCODE_BEACON_INTERVAL;
2467 new_val = beacon_val / beacon_factor;
2468
2469 return cpu_to_le16(new_val);
2470 }
2471
2472 static void iwl4965_setup_rxon_timing(struct iwl4965_priv *priv)
2473 {
2474 u64 interval_tm_unit;
2475 u64 tsf, result;
2476 unsigned long flags;
2477 struct ieee80211_conf *conf = NULL;
2478 u16 beacon_int = 0;
2479
2480 conf = ieee80211_get_hw_conf(priv->hw);
2481
2482 spin_lock_irqsave(&priv->lock, flags);
2483 priv->rxon_timing.timestamp.dw[1] = cpu_to_le32(priv->timestamp1);
2484 priv->rxon_timing.timestamp.dw[0] = cpu_to_le32(priv->timestamp0);
2485
2486 priv->rxon_timing.listen_interval = INTEL_CONN_LISTEN_INTERVAL;
2487
2488 tsf = priv->timestamp1;
2489 tsf = ((tsf << 32) | priv->timestamp0);
2490
2491 beacon_int = priv->beacon_int;
2492 spin_unlock_irqrestore(&priv->lock, flags);
2493
2494 if (priv->iw_mode == IEEE80211_IF_TYPE_STA) {
2495 if (beacon_int == 0) {
2496 priv->rxon_timing.beacon_interval = cpu_to_le16(100);
2497 priv->rxon_timing.beacon_init_val = cpu_to_le32(102400);
2498 } else {
2499 priv->rxon_timing.beacon_interval =
2500 cpu_to_le16(beacon_int);
2501 priv->rxon_timing.beacon_interval =
2502 iwl4965_adjust_beacon_interval(
2503 le16_to_cpu(priv->rxon_timing.beacon_interval));
2504 }
2505
2506 priv->rxon_timing.atim_window = 0;
2507 } else {
2508 priv->rxon_timing.beacon_interval =
2509 iwl4965_adjust_beacon_interval(conf->beacon_int);
2510 /* TODO: we need to get atim_window from upper stack
2511 * for now we set to 0 */
2512 priv->rxon_timing.atim_window = 0;
2513 }
2514
2515 interval_tm_unit =
2516 (le16_to_cpu(priv->rxon_timing.beacon_interval) * 1024);
2517 result = do_div(tsf, interval_tm_unit);
2518 priv->rxon_timing.beacon_init_val =
2519 cpu_to_le32((u32) ((u64) interval_tm_unit - result));
2520
2521 IWL_DEBUG_ASSOC
2522 ("beacon interval %d beacon timer %d beacon tim %d\n",
2523 le16_to_cpu(priv->rxon_timing.beacon_interval),
2524 le32_to_cpu(priv->rxon_timing.beacon_init_val),
2525 le16_to_cpu(priv->rxon_timing.atim_window));
2526 }
2527
2528 static int iwl4965_scan_initiate(struct iwl4965_priv *priv)
2529 {
2530 if (priv->iw_mode == IEEE80211_IF_TYPE_AP) {
2531 IWL_ERROR("APs don't scan.\n");
2532 return 0;
2533 }
2534
2535 if (!iwl4965_is_ready_rf(priv)) {
2536 IWL_DEBUG_SCAN("Aborting scan due to not ready.\n");
2537 return -EIO;
2538 }
2539
2540 if (test_bit(STATUS_SCANNING, &priv->status)) {
2541 IWL_DEBUG_SCAN("Scan already in progress.\n");
2542 return -EAGAIN;
2543 }
2544
2545 if (test_bit(STATUS_SCAN_ABORTING, &priv->status)) {
2546 IWL_DEBUG_SCAN("Scan request while abort pending. "
2547 "Queuing.\n");
2548 return -EAGAIN;
2549 }
2550
2551 IWL_DEBUG_INFO("Starting scan...\n");
2552 priv->scan_bands = 2;
2553 set_bit(STATUS_SCANNING, &priv->status);
2554 priv->scan_start = jiffies;
2555 priv->scan_pass_start = priv->scan_start;
2556
2557 queue_work(priv->workqueue, &priv->request_scan);
2558
2559 return 0;
2560 }
2561
2562 static int iwl4965_set_rxon_hwcrypto(struct iwl4965_priv *priv, int hw_decrypt)
2563 {
2564 struct iwl4965_rxon_cmd *rxon = &priv->staging_rxon;
2565
2566 if (hw_decrypt)
2567 rxon->filter_flags &= ~RXON_FILTER_DIS_DECRYPT_MSK;
2568 else
2569 rxon->filter_flags |= RXON_FILTER_DIS_DECRYPT_MSK;
2570
2571 return 0;
2572 }
2573
2574 static void iwl4965_set_flags_for_phymode(struct iwl4965_priv *priv, u8 phymode)
2575 {
2576 if (phymode == MODE_IEEE80211A) {
2577 priv->staging_rxon.flags &=
2578 ~(RXON_FLG_BAND_24G_MSK | RXON_FLG_AUTO_DETECT_MSK
2579 | RXON_FLG_CCK_MSK);
2580 priv->staging_rxon.flags |= RXON_FLG_SHORT_SLOT_MSK;
2581 } else {
2582 /* Copied from iwl4965_bg_post_associate() */
2583 if (priv->assoc_capability & WLAN_CAPABILITY_SHORT_SLOT_TIME)
2584 priv->staging_rxon.flags |= RXON_FLG_SHORT_SLOT_MSK;
2585 else
2586 priv->staging_rxon.flags &= ~RXON_FLG_SHORT_SLOT_MSK;
2587
2588 if (priv->iw_mode == IEEE80211_IF_TYPE_IBSS)
2589 priv->staging_rxon.flags &= ~RXON_FLG_SHORT_SLOT_MSK;
2590
2591 priv->staging_rxon.flags |= RXON_FLG_BAND_24G_MSK;
2592 priv->staging_rxon.flags |= RXON_FLG_AUTO_DETECT_MSK;
2593 priv->staging_rxon.flags &= ~RXON_FLG_CCK_MSK;
2594 }
2595 }
2596
2597 /*
2598 * initialize rxon structure with default values from eeprom
2599 */
2600 static void iwl4965_connection_init_rx_config(struct iwl4965_priv *priv)
2601 {
2602 const struct iwl4965_channel_info *ch_info;
2603
2604 memset(&priv->staging_rxon, 0, sizeof(priv->staging_rxon));
2605
2606 switch (priv->iw_mode) {
2607 case IEEE80211_IF_TYPE_AP:
2608 priv->staging_rxon.dev_type = RXON_DEV_TYPE_AP;
2609 break;
2610
2611 case IEEE80211_IF_TYPE_STA:
2612 priv->staging_rxon.dev_type = RXON_DEV_TYPE_ESS;
2613 priv->staging_rxon.filter_flags = RXON_FILTER_ACCEPT_GRP_MSK;
2614 break;
2615
2616 case IEEE80211_IF_TYPE_IBSS:
2617 priv->staging_rxon.dev_type = RXON_DEV_TYPE_IBSS;
2618 priv->staging_rxon.flags = RXON_FLG_SHORT_PREAMBLE_MSK;
2619 priv->staging_rxon.filter_flags = RXON_FILTER_BCON_AWARE_MSK |
2620 RXON_FILTER_ACCEPT_GRP_MSK;
2621 break;
2622
2623 case IEEE80211_IF_TYPE_MNTR:
2624 priv->staging_rxon.dev_type = RXON_DEV_TYPE_SNIFFER;
2625 priv->staging_rxon.filter_flags = RXON_FILTER_PROMISC_MSK |
2626 RXON_FILTER_CTL2HOST_MSK | RXON_FILTER_ACCEPT_GRP_MSK;
2627 break;
2628 }
2629
2630 #if 0
2631 /* TODO: Figure out when short_preamble would be set and cache from
2632 * that */
2633 if (!hw_to_local(priv->hw)->short_preamble)
2634 priv->staging_rxon.flags &= ~RXON_FLG_SHORT_PREAMBLE_MSK;
2635 else
2636 priv->staging_rxon.flags |= RXON_FLG_SHORT_PREAMBLE_MSK;
2637 #endif
2638
2639 ch_info = iwl4965_get_channel_info(priv, priv->phymode,
2640 le16_to_cpu(priv->staging_rxon.channel));
2641
2642 if (!ch_info)
2643 ch_info = &priv->channel_info[0];
2644
2645 /*
2646 * in some case A channels are all non IBSS
2647 * in this case force B/G channel
2648 */
2649 if ((priv->iw_mode == IEEE80211_IF_TYPE_IBSS) &&
2650 !(is_channel_ibss(ch_info)))
2651 ch_info = &priv->channel_info[0];
2652
2653 priv->staging_rxon.channel = cpu_to_le16(ch_info->channel);
2654 if (is_channel_a_band(ch_info))
2655 priv->phymode = MODE_IEEE80211A;
2656 else
2657 priv->phymode = MODE_IEEE80211G;
2658
2659 iwl4965_set_flags_for_phymode(priv, priv->phymode);
2660
2661 priv->staging_rxon.ofdm_basic_rates =
2662 (IWL_OFDM_RATES_MASK >> IWL_FIRST_OFDM_RATE) & 0xFF;
2663 priv->staging_rxon.cck_basic_rates =
2664 (IWL_CCK_RATES_MASK >> IWL_FIRST_CCK_RATE) & 0xF;
2665
2666 priv->staging_rxon.flags &= ~(RXON_FLG_CHANNEL_MODE_MIXED_MSK |
2667 RXON_FLG_CHANNEL_MODE_PURE_40_MSK);
2668 memcpy(priv->staging_rxon.node_addr, priv->mac_addr, ETH_ALEN);
2669 memcpy(priv->staging_rxon.wlap_bssid_addr, priv->mac_addr, ETH_ALEN);
2670 priv->staging_rxon.ofdm_ht_single_stream_basic_rates = 0xff;
2671 priv->staging_rxon.ofdm_ht_dual_stream_basic_rates = 0xff;
2672 iwl4965_set_rxon_chain(priv);
2673 }
2674
2675 static int iwl4965_set_mode(struct iwl4965_priv *priv, int mode)
2676 {
2677 if (mode == IEEE80211_IF_TYPE_IBSS) {
2678 const struct iwl4965_channel_info *ch_info;
2679
2680 ch_info = iwl4965_get_channel_info(priv,
2681 priv->phymode,
2682 le16_to_cpu(priv->staging_rxon.channel));
2683
2684 if (!ch_info || !is_channel_ibss(ch_info)) {
2685 IWL_ERROR("channel %d not IBSS channel\n",
2686 le16_to_cpu(priv->staging_rxon.channel));
2687 return -EINVAL;
2688 }
2689 }
2690
2691 priv->iw_mode = mode;
2692
2693 iwl4965_connection_init_rx_config(priv);
2694 memcpy(priv->staging_rxon.node_addr, priv->mac_addr, ETH_ALEN);
2695
2696 iwl4965_clear_stations_table(priv);
2697
2698 /* dont commit rxon if rf-kill is on*/
2699 if (!iwl4965_is_ready_rf(priv))
2700 return -EAGAIN;
2701
2702 cancel_delayed_work(&priv->scan_check);
2703 if (iwl4965_scan_cancel_timeout(priv, 100)) {
2704 IWL_WARNING("Aborted scan still in progress after 100ms\n");
2705 IWL_DEBUG_MAC80211("leaving - scan abort failed.\n");
2706 return -EAGAIN;
2707 }
2708
2709 iwl4965_commit_rxon(priv);
2710
2711 return 0;
2712 }
2713
2714 static void iwl4965_build_tx_cmd_hwcrypto(struct iwl4965_priv *priv,
2715 struct ieee80211_tx_control *ctl,
2716 struct iwl4965_cmd *cmd,
2717 struct sk_buff *skb_frag,
2718 int last_frag)
2719 {
2720 struct iwl4965_hw_key *keyinfo = &priv->stations[ctl->key_idx].keyinfo;
2721
2722 switch (keyinfo->alg) {
2723 case ALG_CCMP:
2724 cmd->cmd.tx.sec_ctl = TX_CMD_SEC_CCM;
2725 memcpy(cmd->cmd.tx.key, keyinfo->key, keyinfo->keylen);
2726 IWL_DEBUG_TX("tx_cmd with aes hwcrypto\n");
2727 break;
2728
2729 case ALG_TKIP:
2730 #if 0
2731 cmd->cmd.tx.sec_ctl = TX_CMD_SEC_TKIP;
2732
2733 if (last_frag)
2734 memcpy(cmd->cmd.tx.tkip_mic.byte, skb_frag->tail - 8,
2735 8);
2736 else
2737 memset(cmd->cmd.tx.tkip_mic.byte, 0, 8);
2738 #endif
2739 break;
2740
2741 case ALG_WEP:
2742 cmd->cmd.tx.sec_ctl = TX_CMD_SEC_WEP |
2743 (ctl->key_idx & TX_CMD_SEC_MSK) << TX_CMD_SEC_SHIFT;
2744
2745 if (keyinfo->keylen == 13)
2746 cmd->cmd.tx.sec_ctl |= TX_CMD_SEC_KEY128;
2747
2748 memcpy(&cmd->cmd.tx.key[3], keyinfo->key, keyinfo->keylen);
2749
2750 IWL_DEBUG_TX("Configuring packet for WEP encryption "
2751 "with key %d\n", ctl->key_idx);
2752 break;
2753
2754 default:
2755 printk(KERN_ERR "Unknown encode alg %d\n", keyinfo->alg);
2756 break;
2757 }
2758 }
2759
2760 /*
2761 * handle build REPLY_TX command notification.
2762 */
2763 static void iwl4965_build_tx_cmd_basic(struct iwl4965_priv *priv,
2764 struct iwl4965_cmd *cmd,
2765 struct ieee80211_tx_control *ctrl,
2766 struct ieee80211_hdr *hdr,
2767 int is_unicast, u8 std_id)
2768 {
2769 __le16 *qc;
2770 u16 fc = le16_to_cpu(hdr->frame_control);
2771 __le32 tx_flags = cmd->cmd.tx.tx_flags;
2772
2773 cmd->cmd.tx.stop_time.life_time = TX_CMD_LIFE_TIME_INFINITE;
2774 if (!(ctrl->flags & IEEE80211_TXCTL_NO_ACK)) {
2775 tx_flags |= TX_CMD_FLG_ACK_MSK;
2776 if ((fc & IEEE80211_FCTL_FTYPE) == IEEE80211_FTYPE_MGMT)
2777 tx_flags |= TX_CMD_FLG_SEQ_CTL_MSK;
2778 if (ieee80211_is_probe_response(fc) &&
2779 !(le16_to_cpu(hdr->seq_ctrl) & 0xf))
2780 tx_flags |= TX_CMD_FLG_TSF_MSK;
2781 } else {
2782 tx_flags &= (~TX_CMD_FLG_ACK_MSK);
2783 tx_flags |= TX_CMD_FLG_SEQ_CTL_MSK;
2784 }
2785
2786 if (ieee80211_is_back_request(fc))
2787 tx_flags |= TX_CMD_FLG_ACK_MSK | TX_CMD_FLG_IMM_BA_RSP_MASK;
2788
2789
2790 cmd->cmd.tx.sta_id = std_id;
2791 if (ieee80211_get_morefrag(hdr))
2792 tx_flags |= TX_CMD_FLG_MORE_FRAG_MSK;
2793
2794 qc = ieee80211_get_qos_ctrl(hdr);
2795 if (qc) {
2796 cmd->cmd.tx.tid_tspec = (u8) (le16_to_cpu(*qc) & 0xf);
2797 tx_flags &= ~TX_CMD_FLG_SEQ_CTL_MSK;
2798 } else
2799 tx_flags |= TX_CMD_FLG_SEQ_CTL_MSK;
2800
2801 if (ctrl->flags & IEEE80211_TXCTL_USE_RTS_CTS) {
2802 tx_flags |= TX_CMD_FLG_RTS_MSK;
2803 tx_flags &= ~TX_CMD_FLG_CTS_MSK;
2804 } else if (ctrl->flags & IEEE80211_TXCTL_USE_CTS_PROTECT) {
2805 tx_flags &= ~TX_CMD_FLG_RTS_MSK;
2806 tx_flags |= TX_CMD_FLG_CTS_MSK;
2807 }
2808
2809 if ((tx_flags & TX_CMD_FLG_RTS_MSK) || (tx_flags & TX_CMD_FLG_CTS_MSK))
2810 tx_flags |= TX_CMD_FLG_FULL_TXOP_PROT_MSK;
2811
2812 tx_flags &= ~(TX_CMD_FLG_ANT_SEL_MSK);
2813 if ((fc & IEEE80211_FCTL_FTYPE) == IEEE80211_FTYPE_MGMT) {
2814 if ((fc & IEEE80211_FCTL_STYPE) == IEEE80211_STYPE_ASSOC_REQ ||
2815 (fc & IEEE80211_FCTL_STYPE) == IEEE80211_STYPE_REASSOC_REQ)
2816 cmd->cmd.tx.timeout.pm_frame_timeout = cpu_to_le16(3);
2817 else
2818 cmd->cmd.tx.timeout.pm_frame_timeout = cpu_to_le16(2);
2819 } else
2820 cmd->cmd.tx.timeout.pm_frame_timeout = 0;
2821
2822 cmd->cmd.tx.driver_txop = 0;
2823 cmd->cmd.tx.tx_flags = tx_flags;
2824 cmd->cmd.tx.next_frame_len = 0;
2825 }
2826
2827 /**
2828 * iwl4965_get_sta_id - Find station's index within station table
2829 *
2830 * If new IBSS station, create new entry in station table
2831 */
2832 static int iwl4965_get_sta_id(struct iwl4965_priv *priv,
2833 struct ieee80211_hdr *hdr)
2834 {
2835 int sta_id;
2836 u16 fc = le16_to_cpu(hdr->frame_control);
2837 DECLARE_MAC_BUF(mac);
2838
2839 /* If this frame is broadcast or management, use broadcast station id */
2840 if (((fc & IEEE80211_FCTL_FTYPE) != IEEE80211_FTYPE_DATA) ||
2841 is_multicast_ether_addr(hdr->addr1))
2842 return priv->hw_setting.bcast_sta_id;
2843
2844 switch (priv->iw_mode) {
2845
2846 /* If we are a client station in a BSS network, use the special
2847 * AP station entry (that's the only station we communicate with) */
2848 case IEEE80211_IF_TYPE_STA:
2849 return IWL_AP_ID;
2850
2851 /* If we are an AP, then find the station, or use BCAST */
2852 case IEEE80211_IF_TYPE_AP:
2853 sta_id = iwl4965_hw_find_station(priv, hdr->addr1);
2854 if (sta_id != IWL_INVALID_STATION)
2855 return sta_id;
2856 return priv->hw_setting.bcast_sta_id;
2857
2858 /* If this frame is going out to an IBSS network, find the station,
2859 * or create a new station table entry */
2860 case IEEE80211_IF_TYPE_IBSS:
2861 sta_id = iwl4965_hw_find_station(priv, hdr->addr1);
2862 if (sta_id != IWL_INVALID_STATION)
2863 return sta_id;
2864
2865 /* Create new station table entry */
2866 sta_id = iwl4965_add_station_flags(priv, hdr->addr1,
2867 0, CMD_ASYNC, NULL);
2868
2869 if (sta_id != IWL_INVALID_STATION)
2870 return sta_id;
2871
2872 IWL_DEBUG_DROP("Station %s not in station map. "
2873 "Defaulting to broadcast...\n",
2874 print_mac(mac, hdr->addr1));
2875 iwl4965_print_hex_dump(IWL_DL_DROP, (u8 *) hdr, sizeof(*hdr));
2876 return priv->hw_setting.bcast_sta_id;
2877
2878 default:
2879 IWL_WARNING("Unknown mode of operation: %d", priv->iw_mode);
2880 return priv->hw_setting.bcast_sta_id;
2881 }
2882 }
2883
2884 /*
2885 * start REPLY_TX command process
2886 */
2887 static int iwl4965_tx_skb(struct iwl4965_priv *priv,
2888 struct sk_buff *skb, struct ieee80211_tx_control *ctl)
2889 {
2890 struct ieee80211_hdr *hdr = (struct ieee80211_hdr *)skb->data;
2891 struct iwl4965_tfd_frame *tfd;
2892 u32 *control_flags;
2893 int txq_id = ctl->queue;
2894 struct iwl4965_tx_queue *txq = NULL;
2895 struct iwl4965_queue *q = NULL;
2896 dma_addr_t phys_addr;
2897 dma_addr_t txcmd_phys;
2898 dma_addr_t scratch_phys;
2899 struct iwl4965_cmd *out_cmd = NULL;
2900 u16 len, idx, len_org;
2901 u8 id, hdr_len, unicast;
2902 u8 sta_id;
2903 u16 seq_number = 0;
2904 u16 fc;
2905 __le16 *qc;
2906 u8 wait_write_ptr = 0;
2907 unsigned long flags;
2908 int rc;
2909
2910 spin_lock_irqsave(&priv->lock, flags);
2911 if (iwl4965_is_rfkill(priv)) {
2912 IWL_DEBUG_DROP("Dropping - RF KILL\n");
2913 goto drop_unlock;
2914 }
2915
2916 if (!priv->vif) {
2917 IWL_DEBUG_DROP("Dropping - !priv->vif\n");
2918 goto drop_unlock;
2919 }
2920
2921 if ((ctl->tx_rate & 0xFF) == IWL_INVALID_RATE) {
2922 IWL_ERROR("ERROR: No TX rate available.\n");
2923 goto drop_unlock;
2924 }
2925
2926 unicast = !is_multicast_ether_addr(hdr->addr1);
2927 id = 0;
2928
2929 fc = le16_to_cpu(hdr->frame_control);
2930
2931 #ifdef CONFIG_IWL4965_DEBUG
2932 if (ieee80211_is_auth(fc))
2933 IWL_DEBUG_TX("Sending AUTH frame\n");
2934 else if (ieee80211_is_assoc_request(fc))
2935 IWL_DEBUG_TX("Sending ASSOC frame\n");
2936 else if (ieee80211_is_reassoc_request(fc))
2937 IWL_DEBUG_TX("Sending REASSOC frame\n");
2938 #endif
2939
2940 /* drop all data frame if we are not associated */
2941 if (((fc & IEEE80211_FCTL_FTYPE) == IEEE80211_FTYPE_DATA) &&
2942 (!iwl4965_is_associated(priv) ||
2943 ((priv->iw_mode == IEEE80211_IF_TYPE_STA) && !priv->assoc_id) ||
2944 !priv->assoc_station_added)) {
2945 IWL_DEBUG_DROP("Dropping - !iwl4965_is_associated\n");
2946 goto drop_unlock;
2947 }
2948
2949 spin_unlock_irqrestore(&priv->lock, flags);
2950
2951 hdr_len = ieee80211_get_hdrlen(fc);
2952
2953 /* Find (or create) index into station table for destination station */
2954 sta_id = iwl4965_get_sta_id(priv, hdr);
2955 if (sta_id == IWL_INVALID_STATION) {
2956 DECLARE_MAC_BUF(mac);
2957
2958 IWL_DEBUG_DROP("Dropping - INVALID STATION: %s\n",
2959 print_mac(mac, hdr->addr1));
2960 goto drop;
2961 }
2962
2963 IWL_DEBUG_RATE("station Id %d\n", sta_id);
2964
2965 qc = ieee80211_get_qos_ctrl(hdr);
2966 if (qc) {
2967 u8 tid = (u8)(le16_to_cpu(*qc) & 0xf);
2968 seq_number = priv->stations[sta_id].tid[tid].seq_number &
2969 IEEE80211_SCTL_SEQ;
2970 hdr->seq_ctrl = cpu_to_le16(seq_number) |
2971 (hdr->seq_ctrl &
2972 __constant_cpu_to_le16(IEEE80211_SCTL_FRAG));
2973 seq_number += 0x10;
2974 #ifdef CONFIG_IWL4965_HT
2975 /* aggregation is on for this <sta,tid> */
2976 if (ctl->flags & IEEE80211_TXCTL_AMPDU)
2977 txq_id = priv->stations[sta_id].tid[tid].agg.txq_id;
2978 priv->stations[sta_id].tid[tid].tfds_in_queue++;
2979 #endif /* CONFIG_IWL4965_HT */
2980 }
2981
2982 /* Descriptor for chosen Tx queue */
2983 txq = &priv->txq[txq_id];
2984 q = &txq->q;
2985
2986 spin_lock_irqsave(&priv->lock, flags);
2987
2988 /* Set up first empty TFD within this queue's circular TFD buffer */
2989 tfd = &txq->bd[q->write_ptr];
2990 memset(tfd, 0, sizeof(*tfd));
2991 control_flags = (u32 *) tfd;
2992 idx = get_cmd_index(q, q->write_ptr, 0);
2993
2994 /* Set up driver data for this TFD */
2995 memset(&(txq->txb[q->write_ptr]), 0, sizeof(struct iwl4965_tx_info));
2996 txq->txb[q->write_ptr].skb[0] = skb;
2997 memcpy(&(txq->txb[q->write_ptr].status.control),
2998 ctl, sizeof(struct ieee80211_tx_control));
2999
3000 /* Set up first empty entry in queue's array of Tx/cmd buffers */
3001 out_cmd = &txq->cmd[idx];
3002 memset(&out_cmd->hdr, 0, sizeof(out_cmd->hdr));
3003 memset(&out_cmd->cmd.tx, 0, sizeof(out_cmd->cmd.tx));
3004
3005 /*
3006 * Set up the Tx-command (not MAC!) header.
3007 * Store the chosen Tx queue and TFD index within the sequence field;
3008 * after Tx, uCode's Tx response will return this value so driver can
3009 * locate the frame within the tx queue and do post-tx processing.
3010 */
3011 out_cmd->hdr.cmd = REPLY_TX;
3012 out_cmd->hdr.sequence = cpu_to_le16((u16)(QUEUE_TO_SEQ(txq_id) |
3013 INDEX_TO_SEQ(q->write_ptr)));
3014
3015 /* Copy MAC header from skb into command buffer */
3016 memcpy(out_cmd->cmd.tx.hdr, hdr, hdr_len);
3017
3018 /*
3019 * Use the first empty entry in this queue's command buffer array
3020 * to contain the Tx command and MAC header concatenated together
3021 * (payload data will be in another buffer).
3022 * Size of this varies, due to varying MAC header length.
3023 * If end is not dword aligned, we'll have 2 extra bytes at the end
3024 * of the MAC header (device reads on dword boundaries).
3025 * We'll tell device about this padding later.
3026 */
3027 len = priv->hw_setting.tx_cmd_len +
3028 sizeof(struct iwl4965_cmd_header) + hdr_len;
3029
3030 len_org = len;
3031 len = (len + 3) & ~3;
3032
3033 if (len_org != len)
3034 len_org = 1;
3035 else
3036 len_org = 0;
3037
3038 /* Physical address of this Tx command's header (not MAC header!),
3039 * within command buffer array. */
3040 txcmd_phys = txq->dma_addr_cmd + sizeof(struct iwl4965_cmd) * idx +
3041 offsetof(struct iwl4965_cmd, hdr);
3042
3043 /* Add buffer containing Tx command and MAC(!) header to TFD's
3044 * first entry */
3045 iwl4965_hw_txq_attach_buf_to_tfd(priv, tfd, txcmd_phys, len);
3046
3047 if (!(ctl->flags & IEEE80211_TXCTL_DO_NOT_ENCRYPT))
3048 iwl4965_build_tx_cmd_hwcrypto(priv, ctl, out_cmd, skb, 0);
3049
3050 /* Set up TFD's 2nd entry to point directly to remainder of skb,
3051 * if any (802.11 null frames have no payload). */
3052 len = skb->len - hdr_len;
3053 if (len) {
3054 phys_addr = pci_map_single(priv->pci_dev, skb->data + hdr_len,
3055 len, PCI_DMA_TODEVICE);
3056 iwl4965_hw_txq_attach_buf_to_tfd(priv, tfd, phys_addr, len);
3057 }
3058
3059 /* Tell 4965 about any 2-byte padding after MAC header */
3060 if (len_org)
3061 out_cmd->cmd.tx.tx_flags |= TX_CMD_FLG_MH_PAD_MSK;
3062
3063 /* Total # bytes to be transmitted */
3064 len = (u16)skb->len;
3065 out_cmd->cmd.tx.len = cpu_to_le16(len);
3066
3067 /* TODO need this for burst mode later on */
3068 iwl4965_build_tx_cmd_basic(priv, out_cmd, ctl, hdr, unicast, sta_id);
3069
3070 /* set is_hcca to 0; it probably will never be implemented */
3071 iwl4965_hw_build_tx_cmd_rate(priv, out_cmd, ctl, hdr, sta_id, 0);
3072
3073 scratch_phys = txcmd_phys + sizeof(struct iwl4965_cmd_header) +
3074 offsetof(struct iwl4965_tx_cmd, scratch);
3075 out_cmd->cmd.tx.dram_lsb_ptr = cpu_to_le32(scratch_phys);
3076 out_cmd->cmd.tx.dram_msb_ptr = iwl_get_dma_hi_address(scratch_phys);
3077
3078 if (!ieee80211_get_morefrag(hdr)) {
3079 txq->need_update = 1;
3080 if (qc) {
3081 u8 tid = (u8)(le16_to_cpu(*qc) & 0xf);
3082 priv->stations[sta_id].tid[tid].seq_number = seq_number;
3083 }
3084 } else {
3085 wait_write_ptr = 1;
3086 txq->need_update = 0;
3087 }
3088
3089 iwl4965_print_hex_dump(IWL_DL_TX, out_cmd->cmd.payload,
3090 sizeof(out_cmd->cmd.tx));
3091
3092 iwl4965_print_hex_dump(IWL_DL_TX, (u8 *)out_cmd->cmd.tx.hdr,
3093 ieee80211_get_hdrlen(fc));
3094
3095 /* Set up entry for this TFD in Tx byte-count array */
3096 iwl4965_tx_queue_update_wr_ptr(priv, txq, len);
3097
3098 /* Tell device the write index *just past* this latest filled TFD */
3099 q->write_ptr = iwl4965_queue_inc_wrap(q->write_ptr, q->n_bd);
3100 rc = iwl4965_tx_queue_update_write_ptr(priv, txq);
3101 spin_unlock_irqrestore(&priv->lock, flags);
3102
3103 if (rc)
3104 return rc;
3105
3106 if ((iwl4965_queue_space(q) < q->high_mark)
3107 && priv->mac80211_registered) {
3108 if (wait_write_ptr) {
3109 spin_lock_irqsave(&priv->lock, flags);
3110 txq->need_update = 1;
3111 iwl4965_tx_queue_update_write_ptr(priv, txq);
3112 spin_unlock_irqrestore(&priv->lock, flags);
3113 }
3114
3115 ieee80211_stop_queue(priv->hw, ctl->queue);
3116 }
3117
3118 return 0;
3119
3120 drop_unlock:
3121 spin_unlock_irqrestore(&priv->lock, flags);
3122 drop:
3123 return -1;
3124 }
3125
3126 static void iwl4965_set_rate(struct iwl4965_priv *priv)
3127 {
3128 const struct ieee80211_hw_mode *hw = NULL;
3129 struct ieee80211_rate *rate;
3130 int i;
3131
3132 hw = iwl4965_get_hw_mode(priv, priv->phymode);
3133 if (!hw) {
3134 IWL_ERROR("Failed to set rate: unable to get hw mode\n");
3135 return;
3136 }
3137
3138 priv->active_rate = 0;
3139 priv->active_rate_basic = 0;
3140
3141 IWL_DEBUG_RATE("Setting rates for 802.11%c\n",
3142 hw->mode == MODE_IEEE80211A ?
3143 'a' : ((hw->mode == MODE_IEEE80211B) ? 'b' : 'g'));
3144
3145 for (i = 0; i < hw->num_rates; i++) {
3146 rate = &(hw->rates[i]);
3147 if ((rate->val < IWL_RATE_COUNT) &&
3148 (rate->flags & IEEE80211_RATE_SUPPORTED)) {
3149 IWL_DEBUG_RATE("Adding rate index %d (plcp %d)%s\n",
3150 rate->val, iwl4965_rates[rate->val].plcp,
3151 (rate->flags & IEEE80211_RATE_BASIC) ?
3152 "*" : "");
3153 priv->active_rate |= (1 << rate->val);
3154 if (rate->flags & IEEE80211_RATE_BASIC)
3155 priv->active_rate_basic |= (1 << rate->val);
3156 } else
3157 IWL_DEBUG_RATE("Not adding rate %d (plcp %d)\n",
3158 rate->val, iwl4965_rates[rate->val].plcp);
3159 }
3160
3161 IWL_DEBUG_RATE("Set active_rate = %0x, active_rate_basic = %0x\n",
3162 priv->active_rate, priv->active_rate_basic);
3163
3164 /*
3165 * If a basic rate is configured, then use it (adding IWL_RATE_1M_MASK)
3166 * otherwise set it to the default of all CCK rates and 6, 12, 24 for
3167 * OFDM
3168 */
3169 if (priv->active_rate_basic & IWL_CCK_BASIC_RATES_MASK)
3170 priv->staging_rxon.cck_basic_rates =
3171 ((priv->active_rate_basic &
3172 IWL_CCK_RATES_MASK) >> IWL_FIRST_CCK_RATE) & 0xF;
3173 else
3174 priv->staging_rxon.cck_basic_rates =
3175 (IWL_CCK_BASIC_RATES_MASK >> IWL_FIRST_CCK_RATE) & 0xF;
3176
3177 if (priv->active_rate_basic & IWL_OFDM_BASIC_RATES_MASK)
3178 priv->staging_rxon.ofdm_basic_rates =
3179 ((priv->active_rate_basic &
3180 (IWL_OFDM_BASIC_RATES_MASK | IWL_RATE_6M_MASK)) >>
3181 IWL_FIRST_OFDM_RATE) & 0xFF;
3182 else
3183 priv->staging_rxon.ofdm_basic_rates =
3184 (IWL_OFDM_BASIC_RATES_MASK >> IWL_FIRST_OFDM_RATE) & 0xFF;
3185 }
3186
3187 static void iwl4965_radio_kill_sw(struct iwl4965_priv *priv, int disable_radio)
3188 {
3189 unsigned long flags;
3190
3191 if (!!disable_radio == test_bit(STATUS_RF_KILL_SW, &priv->status))
3192 return;
3193
3194 IWL_DEBUG_RF_KILL("Manual SW RF KILL set to: RADIO %s\n",
3195 disable_radio ? "OFF" : "ON");
3196
3197 if (disable_radio) {
3198 iwl4965_scan_cancel(priv);
3199 /* FIXME: This is a workaround for AP */
3200 if (priv->iw_mode != IEEE80211_IF_TYPE_AP) {
3201 spin_lock_irqsave(&priv->lock, flags);
3202 iwl4965_write32(priv, CSR_UCODE_DRV_GP1_SET,
3203 CSR_UCODE_SW_BIT_RFKILL);
3204 spin_unlock_irqrestore(&priv->lock, flags);
3205 iwl4965_send_card_state(priv, CARD_STATE_CMD_DISABLE, 0);
3206 set_bit(STATUS_RF_KILL_SW, &priv->status);
3207 }
3208 return;
3209 }
3210
3211 spin_lock_irqsave(&priv->lock, flags);
3212 iwl4965_write32(priv, CSR_UCODE_DRV_GP1_CLR, CSR_UCODE_SW_BIT_RFKILL);
3213
3214 clear_bit(STATUS_RF_KILL_SW, &priv->status);
3215 spin_unlock_irqrestore(&priv->lock, flags);
3216
3217 /* wake up ucode */
3218 msleep(10);
3219
3220 spin_lock_irqsave(&priv->lock, flags);
3221 iwl4965_read32(priv, CSR_UCODE_DRV_GP1);
3222 if (!iwl4965_grab_nic_access(priv))
3223 iwl4965_release_nic_access(priv);
3224 spin_unlock_irqrestore(&priv->lock, flags);
3225
3226 if (test_bit(STATUS_RF_KILL_HW, &priv->status)) {
3227 IWL_DEBUG_RF_KILL("Can not turn radio back on - "
3228 "disabled by HW switch\n");
3229 return;
3230 }
3231
3232 queue_work(priv->workqueue, &priv->restart);
3233 return;
3234 }
3235
3236 void iwl4965_set_decrypted_flag(struct iwl4965_priv *priv, struct sk_buff *skb,
3237 u32 decrypt_res, struct ieee80211_rx_status *stats)
3238 {
3239 u16 fc =
3240 le16_to_cpu(((struct ieee80211_hdr *)skb->data)->frame_control);
3241
3242 if (priv->active_rxon.filter_flags & RXON_FILTER_DIS_DECRYPT_MSK)
3243 return;
3244
3245 if (!(fc & IEEE80211_FCTL_PROTECTED))
3246 return;
3247
3248 IWL_DEBUG_RX("decrypt_res:0x%x\n", decrypt_res);
3249 switch (decrypt_res & RX_RES_STATUS_SEC_TYPE_MSK) {
3250 case RX_RES_STATUS_SEC_TYPE_TKIP:
3251 if ((decrypt_res & RX_RES_STATUS_DECRYPT_TYPE_MSK) ==
3252 RX_RES_STATUS_BAD_ICV_MIC)
3253 stats->flag |= RX_FLAG_MMIC_ERROR;
3254 case RX_RES_STATUS_SEC_TYPE_WEP:
3255 case RX_RES_STATUS_SEC_TYPE_CCMP:
3256 if ((decrypt_res & RX_RES_STATUS_DECRYPT_TYPE_MSK) ==
3257 RX_RES_STATUS_DECRYPT_OK) {
3258 IWL_DEBUG_RX("hw decrypt successfully!!!\n");
3259 stats->flag |= RX_FLAG_DECRYPTED;
3260 }
3261 break;
3262
3263 default:
3264 break;
3265 }
3266 }
3267
3268
3269 #define IWL_PACKET_RETRY_TIME HZ
3270
3271 int iwl4965_is_duplicate_packet(struct iwl4965_priv *priv, struct ieee80211_hdr *header)
3272 {
3273 u16 sc = le16_to_cpu(header->seq_ctrl);
3274 u16 seq = (sc & IEEE80211_SCTL_SEQ) >> 4;
3275 u16 frag = sc & IEEE80211_SCTL_FRAG;
3276 u16 *last_seq, *last_frag;
3277 unsigned long *last_time;
3278
3279 switch (priv->iw_mode) {
3280 case IEEE80211_IF_TYPE_IBSS:{
3281 struct list_head *p;
3282 struct iwl4965_ibss_seq *entry = NULL;
3283 u8 *mac = header->addr2;
3284 int index = mac[5] & (IWL_IBSS_MAC_HASH_SIZE - 1);
3285
3286 __list_for_each(p, &priv->ibss_mac_hash[index]) {
3287 entry = list_entry(p, struct iwl4965_ibss_seq, list);
3288 if (!compare_ether_addr(entry->mac, mac))
3289 break;
3290 }
3291 if (p == &priv->ibss_mac_hash[index]) {
3292 entry = kzalloc(sizeof(*entry), GFP_ATOMIC);
3293 if (!entry) {
3294 IWL_ERROR("Cannot malloc new mac entry\n");
3295 return 0;
3296 }
3297 memcpy(entry->mac, mac, ETH_ALEN);
3298 entry->seq_num = seq;
3299 entry->frag_num = frag;
3300 entry->packet_time = jiffies;
3301 list_add(&entry->list, &priv->ibss_mac_hash[index]);
3302 return 0;
3303 }
3304 last_seq = &entry->seq_num;
3305 last_frag = &entry->frag_num;
3306 last_time = &entry->packet_time;
3307 break;
3308 }
3309 case IEEE80211_IF_TYPE_STA:
3310 last_seq = &priv->last_seq_num;
3311 last_frag = &priv->last_frag_num;
3312 last_time = &priv->last_packet_time;
3313 break;
3314 default:
3315 return 0;
3316 }
3317 if ((*last_seq == seq) &&
3318 time_after(*last_time + IWL_PACKET_RETRY_TIME, jiffies)) {
3319 if (*last_frag == frag)
3320 goto drop;
3321 if (*last_frag + 1 != frag)
3322 /* out-of-order fragment */
3323 goto drop;
3324 } else
3325 *last_seq = seq;
3326
3327 *last_frag = frag;
3328 *last_time = jiffies;
3329 return 0;
3330
3331 drop:
3332 return 1;
3333 }
3334
3335 #ifdef CONFIG_IWL4965_SPECTRUM_MEASUREMENT
3336
3337 #include "iwl-spectrum.h"
3338
3339 #define BEACON_TIME_MASK_LOW 0x00FFFFFF
3340 #define BEACON_TIME_MASK_HIGH 0xFF000000
3341 #define TIME_UNIT 1024
3342
3343 /*
3344 * extended beacon time format
3345 * time in usec will be changed into a 32-bit value in 8:24 format
3346 * the high 1 byte is the beacon counts
3347 * the lower 3 bytes is the time in usec within one beacon interval
3348 */
3349
3350 static u32 iwl4965_usecs_to_beacons(u32 usec, u32 beacon_interval)
3351 {
3352 u32 quot;
3353 u32 rem;
3354 u32 interval = beacon_interval * 1024;
3355
3356 if (!interval || !usec)
3357 return 0;
3358
3359 quot = (usec / interval) & (BEACON_TIME_MASK_HIGH >> 24);
3360 rem = (usec % interval) & BEACON_TIME_MASK_LOW;
3361
3362 return (quot << 24) + rem;
3363 }
3364
3365 /* base is usually what we get from ucode with each received frame,
3366 * the same as HW timer counter counting down
3367 */
3368
3369 static __le32 iwl4965_add_beacon_time(u32 base, u32 addon, u32 beacon_interval)
3370 {
3371 u32 base_low = base & BEACON_TIME_MASK_LOW;
3372 u32 addon_low = addon & BEACON_TIME_MASK_LOW;
3373 u32 interval = beacon_interval * TIME_UNIT;
3374 u32 res = (base & BEACON_TIME_MASK_HIGH) +
3375 (addon & BEACON_TIME_MASK_HIGH);
3376
3377 if (base_low > addon_low)
3378 res += base_low - addon_low;
3379 else if (base_low < addon_low) {
3380 res += interval + base_low - addon_low;
3381 res += (1 << 24);
3382 } else
3383 res += (1 << 24);
3384
3385 return cpu_to_le32(res);
3386 }
3387
3388 static int iwl4965_get_measurement(struct iwl4965_priv *priv,
3389 struct ieee80211_measurement_params *params,
3390 u8 type)
3391 {
3392 struct iwl4965_spectrum_cmd spectrum;
3393 struct iwl4965_rx_packet *res;
3394 struct iwl4965_host_cmd cmd = {
3395 .id = REPLY_SPECTRUM_MEASUREMENT_CMD,
3396 .data = (void *)&spectrum,
3397 .meta.flags = CMD_WANT_SKB,
3398 };
3399 u32 add_time = le64_to_cpu(params->start_time);
3400 int rc;
3401 int spectrum_resp_status;
3402 int duration = le16_to_cpu(params->duration);
3403
3404 if (iwl4965_is_associated(priv))
3405 add_time =
3406 iwl4965_usecs_to_beacons(
3407 le64_to_cpu(params->start_time) - priv->last_tsf,
3408 le16_to_cpu(priv->rxon_timing.beacon_interval));
3409
3410 memset(&spectrum, 0, sizeof(spectrum));
3411
3412 spectrum.channel_count = cpu_to_le16(1);
3413 spectrum.flags =
3414 RXON_FLG_TSF2HOST_MSK | RXON_FLG_ANT_A_MSK | RXON_FLG_DIS_DIV_MSK;
3415 spectrum.filter_flags = MEASUREMENT_FILTER_FLAG;
3416 cmd.len = sizeof(spectrum);
3417 spectrum.len = cpu_to_le16(cmd.len - sizeof(spectrum.len));
3418
3419 if (iwl4965_is_associated(priv))
3420 spectrum.start_time =
3421 iwl4965_add_beacon_time(priv->last_beacon_time,
3422 add_time,
3423 le16_to_cpu(priv->rxon_timing.beacon_interval));
3424 else
3425 spectrum.start_time = 0;
3426
3427 spectrum.channels[0].duration = cpu_to_le32(duration * TIME_UNIT);
3428 spectrum.channels[0].channel = params->channel;
3429 spectrum.channels[0].type = type;
3430 if (priv->active_rxon.flags & RXON_FLG_BAND_24G_MSK)
3431 spectrum.flags |= RXON_FLG_BAND_24G_MSK |
3432 RXON_FLG_AUTO_DETECT_MSK | RXON_FLG_TGG_PROTECT_MSK;
3433
3434 rc = iwl4965_send_cmd_sync(priv, &cmd);
3435 if (rc)
3436 return rc;
3437
3438 res = (struct iwl4965_rx_packet *)cmd.meta.u.skb->data;
3439 if (res->hdr.flags & IWL_CMD_FAILED_MSK) {
3440 IWL_ERROR("Bad return from REPLY_RX_ON_ASSOC command\n");
3441 rc = -EIO;
3442 }
3443
3444 spectrum_resp_status = le16_to_cpu(res->u.spectrum.status);
3445 switch (spectrum_resp_status) {
3446 case 0: /* Command will be handled */
3447 if (res->u.spectrum.id != 0xff) {
3448 IWL_DEBUG_INFO
3449 ("Replaced existing measurement: %d\n",
3450 res->u.spectrum.id);
3451 priv->measurement_status &= ~MEASUREMENT_READY;
3452 }
3453 priv->measurement_status |= MEASUREMENT_ACTIVE;
3454 rc = 0;
3455 break;
3456
3457 case 1: /* Command will not be handled */
3458 rc = -EAGAIN;
3459 break;
3460 }
3461
3462 dev_kfree_skb_any(cmd.meta.u.skb);
3463
3464 return rc;
3465 }
3466 #endif
3467
3468 static void iwl4965_txstatus_to_ieee(struct iwl4965_priv *priv,
3469 struct iwl4965_tx_info *tx_sta)
3470 {
3471
3472 tx_sta->status.ack_signal = 0;
3473 tx_sta->status.excessive_retries = 0;
3474 tx_sta->status.queue_length = 0;
3475 tx_sta->status.queue_number = 0;
3476
3477 if (in_interrupt())
3478 ieee80211_tx_status_irqsafe(priv->hw,
3479 tx_sta->skb[0], &(tx_sta->status));
3480 else
3481 ieee80211_tx_status(priv->hw,
3482 tx_sta->skb[0], &(tx_sta->status));
3483
3484 tx_sta->skb[0] = NULL;
3485 }
3486
3487 /**
3488 * iwl4965_tx_queue_reclaim - Reclaim Tx queue entries already Tx'd
3489 *
3490 * When FW advances 'R' index, all entries between old and new 'R' index
3491 * need to be reclaimed. As result, some free space forms. If there is
3492 * enough free space (> low mark), wake the stack that feeds us.
3493 */
3494 int iwl4965_tx_queue_reclaim(struct iwl4965_priv *priv, int txq_id, int index)
3495 {
3496 struct iwl4965_tx_queue *txq = &priv->txq[txq_id];
3497 struct iwl4965_queue *q = &txq->q;
3498 int nfreed = 0;
3499
3500 if ((index >= q->n_bd) || (x2_queue_used(q, index) == 0)) {
3501 IWL_ERROR("Read index for DMA queue txq id (%d), index %d, "
3502 "is out of range [0-%d] %d %d.\n", txq_id,
3503 index, q->n_bd, q->write_ptr, q->read_ptr);
3504 return 0;
3505 }
3506
3507 for (index = iwl4965_queue_inc_wrap(index, q->n_bd);
3508 q->read_ptr != index;
3509 q->read_ptr = iwl4965_queue_inc_wrap(q->read_ptr, q->n_bd)) {
3510 if (txq_id != IWL_CMD_QUEUE_NUM) {
3511 iwl4965_txstatus_to_ieee(priv,
3512 &(txq->txb[txq->q.read_ptr]));
3513 iwl4965_hw_txq_free_tfd(priv, txq);
3514 } else if (nfreed > 1) {
3515 IWL_ERROR("HCMD skipped: index (%d) %d %d\n", index,
3516 q->write_ptr, q->read_ptr);
3517 queue_work(priv->workqueue, &priv->restart);
3518 }
3519 nfreed++;
3520 }
3521
3522 /* if (iwl4965_queue_space(q) > q->low_mark && (txq_id >= 0) &&
3523 (txq_id != IWL_CMD_QUEUE_NUM) &&
3524 priv->mac80211_registered)
3525 ieee80211_wake_queue(priv->hw, txq_id); */
3526
3527
3528 return nfreed;
3529 }
3530
3531 static int iwl4965_is_tx_success(u32 status)
3532 {
3533 status &= TX_STATUS_MSK;
3534 return (status == TX_STATUS_SUCCESS)
3535 || (status == TX_STATUS_DIRECT_DONE);
3536 }
3537
3538 /******************************************************************************
3539 *
3540 * Generic RX handler implementations
3541 *
3542 ******************************************************************************/
3543 #ifdef CONFIG_IWL4965_HT
3544
3545 static inline int iwl4965_get_ra_sta_id(struct iwl4965_priv *priv,
3546 struct ieee80211_hdr *hdr)
3547 {
3548 if (priv->iw_mode == IEEE80211_IF_TYPE_STA)
3549 return IWL_AP_ID;
3550 else {
3551 u8 *da = ieee80211_get_DA(hdr);
3552 return iwl4965_hw_find_station(priv, da);
3553 }
3554 }
3555
3556 static struct ieee80211_hdr *iwl4965_tx_queue_get_hdr(
3557 struct iwl4965_priv *priv, int txq_id, int idx)
3558 {
3559 if (priv->txq[txq_id].txb[idx].skb[0])
3560 return (struct ieee80211_hdr *)priv->txq[txq_id].
3561 txb[idx].skb[0]->data;
3562 return NULL;
3563 }
3564
3565 static inline u32 iwl4965_get_scd_ssn(struct iwl4965_tx_resp *tx_resp)
3566 {
3567 __le32 *scd_ssn = (__le32 *)((u32 *)&tx_resp->status +
3568 tx_resp->frame_count);
3569 return le32_to_cpu(*scd_ssn) & MAX_SN;
3570
3571 }
3572
3573 /**
3574 * iwl4965_tx_status_reply_tx - Handle Tx rspnse for frames in aggregation queue
3575 */
3576 static int iwl4965_tx_status_reply_tx(struct iwl4965_priv *priv,
3577 struct iwl4965_ht_agg *agg,
3578 struct iwl4965_tx_resp_agg *tx_resp,
3579 u16 start_idx)
3580 {
3581 u16 status;
3582 struct agg_tx_status *frame_status = &tx_resp->status;
3583 struct ieee80211_tx_status *tx_status = NULL;
3584 struct ieee80211_hdr *hdr = NULL;
3585 int i, sh;
3586 int txq_id, idx;
3587 u16 seq;
3588
3589 if (agg->wait_for_ba)
3590 IWL_DEBUG_TX_REPLY("got tx response w/o block-ack\n");
3591
3592 agg->frame_count = tx_resp->frame_count;
3593 agg->start_idx = start_idx;
3594 agg->rate_n_flags = le32_to_cpu(tx_resp->rate_n_flags);
3595 agg->bitmap = 0;
3596
3597 /* # frames attempted by Tx command */
3598 if (agg->frame_count == 1) {
3599 /* Only one frame was attempted; no block-ack will arrive */
3600 status = le16_to_cpu(frame_status[0].status);
3601 seq = le16_to_cpu(frame_status[0].sequence);
3602 idx = SEQ_TO_INDEX(seq);
3603 txq_id = SEQ_TO_QUEUE(seq);
3604
3605 /* FIXME: code repetition */
3606 IWL_DEBUG_TX_REPLY("FrameCnt = %d, StartIdx=%d idx=%d\n",
3607 agg->frame_count, agg->start_idx, idx);
3608
3609 tx_status = &(priv->txq[txq_id].txb[idx].status);
3610 tx_status->retry_count = tx_resp->failure_frame;
3611 tx_status->queue_number = status & 0xff;
3612 tx_status->queue_length = tx_resp->failure_rts;
3613 tx_status->control.flags &= ~IEEE80211_TXCTL_AMPDU;
3614 tx_status->flags = iwl4965_is_tx_success(status)?
3615 IEEE80211_TX_STATUS_ACK : 0;
3616 tx_status->control.tx_rate =
3617 iwl4965_hw_get_rate_n_flags(tx_resp->rate_n_flags);
3618 /* FIXME: code repetition end */
3619
3620 IWL_DEBUG_TX_REPLY("1 Frame 0x%x failure :%d\n",
3621 status & 0xff, tx_resp->failure_frame);
3622 IWL_DEBUG_TX_REPLY("Rate Info rate_n_flags=%x\n",
3623 iwl4965_hw_get_rate_n_flags(tx_resp->rate_n_flags));
3624
3625 agg->wait_for_ba = 0;
3626 } else {
3627 /* Two or more frames were attempted; expect block-ack */
3628 u64 bitmap = 0;
3629 int start = agg->start_idx;
3630
3631 /* Construct bit-map of pending frames within Tx window */
3632 for (i = 0; i < agg->frame_count; i++) {
3633 u16 sc;
3634 status = le16_to_cpu(frame_status[i].status);
3635 seq = le16_to_cpu(frame_status[i].sequence);
3636 idx = SEQ_TO_INDEX(seq);
3637 txq_id = SEQ_TO_QUEUE(seq);
3638
3639 if (status & (AGG_TX_STATE_FEW_BYTES_MSK |
3640 AGG_TX_STATE_ABORT_MSK))
3641 continue;
3642
3643 IWL_DEBUG_TX_REPLY("FrameCnt = %d, txq_id=%d idx=%d\n",
3644 agg->frame_count, txq_id, idx);
3645
3646 hdr = iwl4965_tx_queue_get_hdr(priv, txq_id, idx);
3647
3648 sc = le16_to_cpu(hdr->seq_ctrl);
3649 if (idx != (SEQ_TO_SN(sc) & 0xff)) {
3650 IWL_ERROR("BUG_ON idx doesn't match seq control"
3651 " idx=%d, seq_idx=%d, seq=%d\n",
3652 idx, SEQ_TO_SN(sc),
3653 hdr->seq_ctrl);
3654 return -1;
3655 }
3656
3657 IWL_DEBUG_TX_REPLY("AGG Frame i=%d idx %d seq=%d\n",
3658 i, idx, SEQ_TO_SN(sc));
3659
3660 sh = idx - start;
3661 if (sh > 64) {
3662 sh = (start - idx) + 0xff;
3663 bitmap = bitmap << sh;
3664 sh = 0;
3665 start = idx;
3666 } else if (sh < -64)
3667 sh = 0xff - (start - idx);
3668 else if (sh < 0) {
3669 sh = start - idx;
3670 start = idx;
3671 bitmap = bitmap << sh;
3672 sh = 0;
3673 }
3674 bitmap |= (1 << sh);
3675 IWL_DEBUG_TX_REPLY("start=%d bitmap=0x%x\n",
3676 start, (u32)(bitmap & 0xFFFFFFFF));
3677 }
3678
3679 agg->bitmap = bitmap;
3680 agg->start_idx = start;
3681 agg->rate_n_flags = le32_to_cpu(tx_resp->rate_n_flags);
3682 IWL_DEBUG_TX_REPLY("Frames %d start_idx=%d bitmap=0x%llx\n",
3683 agg->frame_count, agg->start_idx,
3684 agg->bitmap);
3685
3686 if (bitmap)
3687 agg->wait_for_ba = 1;
3688 }
3689 return 0;
3690 }
3691 #endif
3692
3693 /**
3694 * iwl4965_rx_reply_tx - Handle standard (non-aggregation) Tx response
3695 */
3696 static void iwl4965_rx_reply_tx(struct iwl4965_priv *priv,
3697 struct iwl4965_rx_mem_buffer *rxb)
3698 {
3699 struct iwl4965_rx_packet *pkt = (void *)rxb->skb->data;
3700 u16 sequence = le16_to_cpu(pkt->hdr.sequence);
3701 int txq_id = SEQ_TO_QUEUE(sequence);
3702 int index = SEQ_TO_INDEX(sequence);
3703 struct iwl4965_tx_queue *txq = &priv->txq[txq_id];
3704 struct ieee80211_tx_status *tx_status;
3705 struct iwl4965_tx_resp *tx_resp = (void *)&pkt->u.raw[0];
3706 u32 status = le32_to_cpu(tx_resp->status);
3707 #ifdef CONFIG_IWL4965_HT
3708 int tid = MAX_TID_COUNT, sta_id = IWL_INVALID_STATION;
3709 struct ieee80211_hdr *hdr;
3710 __le16 *qc;
3711 #endif
3712
3713 if ((index >= txq->q.n_bd) || (x2_queue_used(&txq->q, index) == 0)) {
3714 IWL_ERROR("Read index for DMA queue txq_id (%d) index %d "
3715 "is out of range [0-%d] %d %d\n", txq_id,
3716 index, txq->q.n_bd, txq->q.write_ptr,
3717 txq->q.read_ptr);
3718 return;
3719 }
3720
3721 #ifdef CONFIG_IWL4965_HT
3722 hdr = iwl4965_tx_queue_get_hdr(priv, txq_id, index);
3723 qc = ieee80211_get_qos_ctrl(hdr);
3724
3725 if (qc)
3726 tid = le16_to_cpu(*qc) & 0xf;
3727
3728 sta_id = iwl4965_get_ra_sta_id(priv, hdr);
3729 if (txq->sched_retry && unlikely(sta_id == IWL_INVALID_STATION)) {
3730 IWL_ERROR("Station not known\n");
3731 return;
3732 }
3733
3734 if (txq->sched_retry) {
3735 const u32 scd_ssn = iwl4965_get_scd_ssn(tx_resp);
3736 struct iwl4965_ht_agg *agg = NULL;
3737
3738 if (!qc)
3739 return;
3740
3741 agg = &priv->stations[sta_id].tid[tid].agg;
3742
3743 iwl4965_tx_status_reply_tx(priv, agg,
3744 (struct iwl4965_tx_resp_agg *)tx_resp, index);
3745
3746 if ((tx_resp->frame_count == 1) &&
3747 !iwl4965_is_tx_success(status)) {
3748 /* TODO: send BAR */
3749 }
3750
3751 if (txq->q.read_ptr != (scd_ssn & 0xff)) {
3752 int freed;
3753 index = iwl4965_queue_dec_wrap(scd_ssn & 0xff, txq->q.n_bd);
3754 IWL_DEBUG_TX_REPLY("Retry scheduler reclaim scd_ssn "
3755 "%d index %d\n", scd_ssn , index);
3756 freed = iwl4965_tx_queue_reclaim(priv, txq_id, index);
3757 priv->stations[sta_id].tid[tid].tfds_in_queue -= freed;
3758
3759 if (iwl4965_queue_space(&txq->q) > txq->q.low_mark &&
3760 txq_id >= 0 && priv->mac80211_registered &&
3761 agg->state != IWL_EMPTYING_HW_QUEUE_DELBA)
3762 ieee80211_wake_queue(priv->hw, txq_id);
3763
3764 iwl4965_check_empty_hw_queue(priv, sta_id, tid, txq_id);
3765 }
3766 } else {
3767 #endif /* CONFIG_IWL4965_HT */
3768 tx_status = &(txq->txb[txq->q.read_ptr].status);
3769
3770 tx_status->retry_count = tx_resp->failure_frame;
3771 tx_status->queue_number = status;
3772 tx_status->queue_length = tx_resp->bt_kill_count;
3773 tx_status->queue_length |= tx_resp->failure_rts;
3774
3775 tx_status->flags =
3776 iwl4965_is_tx_success(status) ? IEEE80211_TX_STATUS_ACK : 0;
3777
3778 tx_status->control.tx_rate =
3779 iwl4965_hw_get_rate_n_flags(tx_resp->rate_n_flags);
3780
3781 IWL_DEBUG_TX("Tx queue %d Status %s (0x%08x) rate_n_flags 0x%x "
3782 "retries %d\n", txq_id, iwl4965_get_tx_fail_reason(status),
3783 status, le32_to_cpu(tx_resp->rate_n_flags),
3784 tx_resp->failure_frame);
3785
3786 IWL_DEBUG_TX_REPLY("Tx queue reclaim %d\n", index);
3787 if (index != -1) {
3788 int freed = iwl4965_tx_queue_reclaim(priv, txq_id, index);
3789 #ifdef CONFIG_IWL4965_HT
3790 if (tid != MAX_TID_COUNT)
3791 priv->stations[sta_id].tid[tid].tfds_in_queue -= freed;
3792 if (iwl4965_queue_space(&txq->q) > txq->q.low_mark &&
3793 (txq_id >= 0) &&
3794 priv->mac80211_registered)
3795 ieee80211_wake_queue(priv->hw, txq_id);
3796 if (tid != MAX_TID_COUNT)
3797 iwl4965_check_empty_hw_queue(priv, sta_id, tid, txq_id);
3798 #endif
3799 }
3800 #ifdef CONFIG_IWL4965_HT
3801 }
3802 #endif /* CONFIG_IWL4965_HT */
3803
3804 if (iwl_check_bits(status, TX_ABORT_REQUIRED_MSK))
3805 IWL_ERROR("TODO: Implement Tx ABORT REQUIRED!!!\n");
3806 }
3807
3808
3809 static void iwl4965_rx_reply_alive(struct iwl4965_priv *priv,
3810 struct iwl4965_rx_mem_buffer *rxb)
3811 {
3812 struct iwl4965_rx_packet *pkt = (void *)rxb->skb->data;
3813 struct iwl4965_alive_resp *palive;
3814 struct delayed_work *pwork;
3815
3816 palive = &pkt->u.alive_frame;
3817
3818 IWL_DEBUG_INFO("Alive ucode status 0x%08X revision "
3819 "0x%01X 0x%01X\n",
3820 palive->is_valid, palive->ver_type,
3821 palive->ver_subtype);
3822
3823 if (palive->ver_subtype == INITIALIZE_SUBTYPE) {
3824 IWL_DEBUG_INFO("Initialization Alive received.\n");
3825 memcpy(&priv->card_alive_init,
3826 &pkt->u.alive_frame,
3827 sizeof(struct iwl4965_init_alive_resp));
3828 pwork = &priv->init_alive_start;
3829 } else {
3830 IWL_DEBUG_INFO("Runtime Alive received.\n");
3831 memcpy(&priv->card_alive, &pkt->u.alive_frame,
3832 sizeof(struct iwl4965_alive_resp));
3833 pwork = &priv->alive_start;
3834 }
3835
3836 /* We delay the ALIVE response by 5ms to
3837 * give the HW RF Kill time to activate... */
3838 if (palive->is_valid == UCODE_VALID_OK)
3839 queue_delayed_work(priv->workqueue, pwork,
3840 msecs_to_jiffies(5));
3841 else
3842 IWL_WARNING("uCode did not respond OK.\n");
3843 }
3844
3845 static void iwl4965_rx_reply_add_sta(struct iwl4965_priv *priv,
3846 struct iwl4965_rx_mem_buffer *rxb)
3847 {
3848 struct iwl4965_rx_packet *pkt = (void *)rxb->skb->data;
3849
3850 IWL_DEBUG_RX("Received REPLY_ADD_STA: 0x%02X\n", pkt->u.status);
3851 return;
3852 }
3853
3854 static void iwl4965_rx_reply_error(struct iwl4965_priv *priv,
3855 struct iwl4965_rx_mem_buffer *rxb)
3856 {
3857 struct iwl4965_rx_packet *pkt = (void *)rxb->skb->data;
3858
3859 IWL_ERROR("Error Reply type 0x%08X cmd %s (0x%02X) "
3860 "seq 0x%04X ser 0x%08X\n",
3861 le32_to_cpu(pkt->u.err_resp.error_type),
3862 get_cmd_string(pkt->u.err_resp.cmd_id),
3863 pkt->u.err_resp.cmd_id,
3864 le16_to_cpu(pkt->u.err_resp.bad_cmd_seq_num),
3865 le32_to_cpu(pkt->u.err_resp.error_info));
3866 }
3867
3868 #define TX_STATUS_ENTRY(x) case TX_STATUS_FAIL_ ## x: return #x
3869
3870 static void iwl4965_rx_csa(struct iwl4965_priv *priv, struct iwl4965_rx_mem_buffer *rxb)
3871 {
3872 struct iwl4965_rx_packet *pkt = (void *)rxb->skb->data;
3873 struct iwl4965_rxon_cmd *rxon = (void *)&priv->active_rxon;
3874 struct iwl4965_csa_notification *csa = &(pkt->u.csa_notif);
3875 IWL_DEBUG_11H("CSA notif: channel %d, status %d\n",
3876 le16_to_cpu(csa->channel), le32_to_cpu(csa->status));
3877 rxon->channel = csa->channel;
3878 priv->staging_rxon.channel = csa->channel;
3879 }
3880
3881 static void iwl4965_rx_spectrum_measure_notif(struct iwl4965_priv *priv,
3882 struct iwl4965_rx_mem_buffer *rxb)
3883 {
3884 #ifdef CONFIG_IWL4965_SPECTRUM_MEASUREMENT
3885 struct iwl4965_rx_packet *pkt = (void *)rxb->skb->data;
3886 struct iwl4965_spectrum_notification *report = &(pkt->u.spectrum_notif);
3887
3888 if (!report->state) {
3889 IWL_DEBUG(IWL_DL_11H | IWL_DL_INFO,
3890 "Spectrum Measure Notification: Start\n");
3891 return;
3892 }
3893
3894 memcpy(&priv->measure_report, report, sizeof(*report));
3895 priv->measurement_status |= MEASUREMENT_READY;
3896 #endif
3897 }
3898
3899 static void iwl4965_rx_pm_sleep_notif(struct iwl4965_priv *priv,
3900 struct iwl4965_rx_mem_buffer *rxb)
3901 {
3902 #ifdef CONFIG_IWL4965_DEBUG
3903 struct iwl4965_rx_packet *pkt = (void *)rxb->skb->data;
3904 struct iwl4965_sleep_notification *sleep = &(pkt->u.sleep_notif);
3905 IWL_DEBUG_RX("sleep mode: %d, src: %d\n",
3906 sleep->pm_sleep_mode, sleep->pm_wakeup_src);
3907 #endif
3908 }
3909
3910 static void iwl4965_rx_pm_debug_statistics_notif(struct iwl4965_priv *priv,
3911 struct iwl4965_rx_mem_buffer *rxb)
3912 {
3913 struct iwl4965_rx_packet *pkt = (void *)rxb->skb->data;
3914 IWL_DEBUG_RADIO("Dumping %d bytes of unhandled "
3915 "notification for %s:\n",
3916 le32_to_cpu(pkt->len), get_cmd_string(pkt->hdr.cmd));
3917 iwl4965_print_hex_dump(IWL_DL_RADIO, pkt->u.raw, le32_to_cpu(pkt->len));
3918 }
3919
3920 static void iwl4965_bg_beacon_update(struct work_struct *work)
3921 {
3922 struct iwl4965_priv *priv =
3923 container_of(work, struct iwl4965_priv, beacon_update);
3924 struct sk_buff *beacon;
3925
3926 /* Pull updated AP beacon from mac80211. will fail if not in AP mode */
3927 beacon = ieee80211_beacon_get(priv->hw, priv->vif, NULL);
3928
3929 if (!beacon) {
3930 IWL_ERROR("update beacon failed\n");
3931 return;
3932 }
3933
3934 mutex_lock(&priv->mutex);
3935 /* new beacon skb is allocated every time; dispose previous.*/
3936 if (priv->ibss_beacon)
3937 dev_kfree_skb(priv->ibss_beacon);
3938
3939 priv->ibss_beacon = beacon;
3940 mutex_unlock(&priv->mutex);
3941
3942 iwl4965_send_beacon_cmd(priv);
3943 }
3944
3945 static void iwl4965_rx_beacon_notif(struct iwl4965_priv *priv,
3946 struct iwl4965_rx_mem_buffer *rxb)
3947 {
3948 #ifdef CONFIG_IWL4965_DEBUG
3949 struct iwl4965_rx_packet *pkt = (void *)rxb->skb->data;
3950 struct iwl4965_beacon_notif *beacon = &(pkt->u.beacon_status);
3951 u8 rate = iwl4965_hw_get_rate(beacon->beacon_notify_hdr.rate_n_flags);
3952
3953 IWL_DEBUG_RX("beacon status %x retries %d iss %d "
3954 "tsf %d %d rate %d\n",
3955 le32_to_cpu(beacon->beacon_notify_hdr.status) & TX_STATUS_MSK,
3956 beacon->beacon_notify_hdr.failure_frame,
3957 le32_to_cpu(beacon->ibss_mgr_status),
3958 le32_to_cpu(beacon->high_tsf),
3959 le32_to_cpu(beacon->low_tsf), rate);
3960 #endif
3961
3962 if ((priv->iw_mode == IEEE80211_IF_TYPE_AP) &&
3963 (!test_bit(STATUS_EXIT_PENDING, &priv->status)))
3964 queue_work(priv->workqueue, &priv->beacon_update);
3965 }
3966
3967 /* Service response to REPLY_SCAN_CMD (0x80) */
3968 static void iwl4965_rx_reply_scan(struct iwl4965_priv *priv,
3969 struct iwl4965_rx_mem_buffer *rxb)
3970 {
3971 #ifdef CONFIG_IWL4965_DEBUG
3972 struct iwl4965_rx_packet *pkt = (void *)rxb->skb->data;
3973 struct iwl4965_scanreq_notification *notif =
3974 (struct iwl4965_scanreq_notification *)pkt->u.raw;
3975
3976 IWL_DEBUG_RX("Scan request status = 0x%x\n", notif->status);
3977 #endif
3978 }
3979
3980 /* Service SCAN_START_NOTIFICATION (0x82) */
3981 static void iwl4965_rx_scan_start_notif(struct iwl4965_priv *priv,
3982 struct iwl4965_rx_mem_buffer *rxb)
3983 {
3984 struct iwl4965_rx_packet *pkt = (void *)rxb->skb->data;
3985 struct iwl4965_scanstart_notification *notif =
3986 (struct iwl4965_scanstart_notification *)pkt->u.raw;
3987 priv->scan_start_tsf = le32_to_cpu(notif->tsf_low);
3988 IWL_DEBUG_SCAN("Scan start: "
3989 "%d [802.11%s] "
3990 "(TSF: 0x%08X:%08X) - %d (beacon timer %u)\n",
3991 notif->channel,
3992 notif->band ? "bg" : "a",
3993 notif->tsf_high,
3994 notif->tsf_low, notif->status, notif->beacon_timer);
3995 }
3996
3997 /* Service SCAN_RESULTS_NOTIFICATION (0x83) */
3998 static void iwl4965_rx_scan_results_notif(struct iwl4965_priv *priv,
3999 struct iwl4965_rx_mem_buffer *rxb)
4000 {
4001 struct iwl4965_rx_packet *pkt = (void *)rxb->skb->data;
4002 struct iwl4965_scanresults_notification *notif =
4003 (struct iwl4965_scanresults_notification *)pkt->u.raw;
4004
4005 IWL_DEBUG_SCAN("Scan ch.res: "
4006 "%d [802.11%s] "
4007 "(TSF: 0x%08X:%08X) - %d "
4008 "elapsed=%lu usec (%dms since last)\n",
4009 notif->channel,
4010 notif->band ? "bg" : "a",
4011 le32_to_cpu(notif->tsf_high),
4012 le32_to_cpu(notif->tsf_low),
4013 le32_to_cpu(notif->statistics[0]),
4014 le32_to_cpu(notif->tsf_low) - priv->scan_start_tsf,
4015 jiffies_to_msecs(elapsed_jiffies
4016 (priv->last_scan_jiffies, jiffies)));
4017
4018 priv->last_scan_jiffies = jiffies;
4019 priv->next_scan_jiffies = 0;
4020 }
4021
4022 /* Service SCAN_COMPLETE_NOTIFICATION (0x84) */
4023 static void iwl4965_rx_scan_complete_notif(struct iwl4965_priv *priv,
4024 struct iwl4965_rx_mem_buffer *rxb)
4025 {
4026 struct iwl4965_rx_packet *pkt = (void *)rxb->skb->data;
4027 struct iwl4965_scancomplete_notification *scan_notif = (void *)pkt->u.raw;
4028
4029 IWL_DEBUG_SCAN("Scan complete: %d channels (TSF 0x%08X:%08X) - %d\n",
4030 scan_notif->scanned_channels,
4031 scan_notif->tsf_low,
4032 scan_notif->tsf_high, scan_notif->status);
4033
4034 /* The HW is no longer scanning */
4035 clear_bit(STATUS_SCAN_HW, &priv->status);
4036
4037 /* The scan completion notification came in, so kill that timer... */
4038 cancel_delayed_work(&priv->scan_check);
4039
4040 IWL_DEBUG_INFO("Scan pass on %sGHz took %dms\n",
4041 (priv->scan_bands == 2) ? "2.4" : "5.2",
4042 jiffies_to_msecs(elapsed_jiffies
4043 (priv->scan_pass_start, jiffies)));
4044
4045 /* Remove this scanned band from the list
4046 * of pending bands to scan */
4047 priv->scan_bands--;
4048
4049 /* If a request to abort was given, or the scan did not succeed
4050 * then we reset the scan state machine and terminate,
4051 * re-queuing another scan if one has been requested */
4052 if (test_bit(STATUS_SCAN_ABORTING, &priv->status)) {
4053 IWL_DEBUG_INFO("Aborted scan completed.\n");
4054 clear_bit(STATUS_SCAN_ABORTING, &priv->status);
4055 } else {
4056 /* If there are more bands on this scan pass reschedule */
4057 if (priv->scan_bands > 0)
4058 goto reschedule;
4059 }
4060
4061 priv->last_scan_jiffies = jiffies;
4062 priv->next_scan_jiffies = 0;
4063 IWL_DEBUG_INFO("Setting scan to off\n");
4064
4065 clear_bit(STATUS_SCANNING, &priv->status);
4066
4067 IWL_DEBUG_INFO("Scan took %dms\n",
4068 jiffies_to_msecs(elapsed_jiffies(priv->scan_start, jiffies)));
4069
4070 queue_work(priv->workqueue, &priv->scan_completed);
4071
4072 return;
4073
4074 reschedule:
4075 priv->scan_pass_start = jiffies;
4076 queue_work(priv->workqueue, &priv->request_scan);
4077 }
4078
4079 /* Handle notification from uCode that card's power state is changing
4080 * due to software, hardware, or critical temperature RFKILL */
4081 static void iwl4965_rx_card_state_notif(struct iwl4965_priv *priv,
4082 struct iwl4965_rx_mem_buffer *rxb)
4083 {
4084 struct iwl4965_rx_packet *pkt = (void *)rxb->skb->data;
4085 u32 flags = le32_to_cpu(pkt->u.card_state_notif.flags);
4086 unsigned long status = priv->status;
4087
4088 IWL_DEBUG_RF_KILL("Card state received: HW:%s SW:%s\n",
4089 (flags & HW_CARD_DISABLED) ? "Kill" : "On",
4090 (flags & SW_CARD_DISABLED) ? "Kill" : "On");
4091
4092 if (flags & (SW_CARD_DISABLED | HW_CARD_DISABLED |
4093 RF_CARD_DISABLED)) {
4094
4095 iwl4965_write32(priv, CSR_UCODE_DRV_GP1_SET,
4096 CSR_UCODE_DRV_GP1_BIT_CMD_BLOCKED);
4097
4098 if (!iwl4965_grab_nic_access(priv)) {
4099 iwl4965_write_direct32(
4100 priv, HBUS_TARG_MBX_C,
4101 HBUS_TARG_MBX_C_REG_BIT_CMD_BLOCKED);
4102
4103 iwl4965_release_nic_access(priv);
4104 }
4105
4106 if (!(flags & RXON_CARD_DISABLED)) {
4107 iwl4965_write32(priv, CSR_UCODE_DRV_GP1_CLR,
4108 CSR_UCODE_DRV_GP1_BIT_CMD_BLOCKED);
4109 if (!iwl4965_grab_nic_access(priv)) {
4110 iwl4965_write_direct32(
4111 priv, HBUS_TARG_MBX_C,
4112 HBUS_TARG_MBX_C_REG_BIT_CMD_BLOCKED);
4113
4114 iwl4965_release_nic_access(priv);
4115 }
4116 }
4117
4118 if (flags & RF_CARD_DISABLED) {
4119 iwl4965_write32(priv, CSR_UCODE_DRV_GP1_SET,
4120 CSR_UCODE_DRV_GP1_REG_BIT_CT_KILL_EXIT);
4121 iwl4965_read32(priv, CSR_UCODE_DRV_GP1);
4122 if (!iwl4965_grab_nic_access(priv))
4123 iwl4965_release_nic_access(priv);
4124 }
4125 }
4126
4127 if (flags & HW_CARD_DISABLED)
4128 set_bit(STATUS_RF_KILL_HW, &priv->status);
4129 else
4130 clear_bit(STATUS_RF_KILL_HW, &priv->status);
4131
4132
4133 if (flags & SW_CARD_DISABLED)
4134 set_bit(STATUS_RF_KILL_SW, &priv->status);
4135 else
4136 clear_bit(STATUS_RF_KILL_SW, &priv->status);
4137
4138 if (!(flags & RXON_CARD_DISABLED))
4139 iwl4965_scan_cancel(priv);
4140
4141 if ((test_bit(STATUS_RF_KILL_HW, &status) !=
4142 test_bit(STATUS_RF_KILL_HW, &priv->status)) ||
4143 (test_bit(STATUS_RF_KILL_SW, &status) !=
4144 test_bit(STATUS_RF_KILL_SW, &priv->status)))
4145 queue_work(priv->workqueue, &priv->rf_kill);
4146 else
4147 wake_up_interruptible(&priv->wait_command_queue);
4148 }
4149
4150 /**
4151 * iwl4965_setup_rx_handlers - Initialize Rx handler callbacks
4152 *
4153 * Setup the RX handlers for each of the reply types sent from the uCode
4154 * to the host.
4155 *
4156 * This function chains into the hardware specific files for them to setup
4157 * any hardware specific handlers as well.
4158 */
4159 static void iwl4965_setup_rx_handlers(struct iwl4965_priv *priv)
4160 {
4161 priv->rx_handlers[REPLY_ALIVE] = iwl4965_rx_reply_alive;
4162 priv->rx_handlers[REPLY_ADD_STA] = iwl4965_rx_reply_add_sta;
4163 priv->rx_handlers[REPLY_ERROR] = iwl4965_rx_reply_error;
4164 priv->rx_handlers[CHANNEL_SWITCH_NOTIFICATION] = iwl4965_rx_csa;
4165 priv->rx_handlers[SPECTRUM_MEASURE_NOTIFICATION] =
4166 iwl4965_rx_spectrum_measure_notif;
4167 priv->rx_handlers[PM_SLEEP_NOTIFICATION] = iwl4965_rx_pm_sleep_notif;
4168 priv->rx_handlers[PM_DEBUG_STATISTIC_NOTIFIC] =
4169 iwl4965_rx_pm_debug_statistics_notif;
4170 priv->rx_handlers[BEACON_NOTIFICATION] = iwl4965_rx_beacon_notif;
4171
4172 /*
4173 * The same handler is used for both the REPLY to a discrete
4174 * statistics request from the host as well as for the periodic
4175 * statistics notifications (after received beacons) from the uCode.
4176 */
4177 priv->rx_handlers[REPLY_STATISTICS_CMD] = iwl4965_hw_rx_statistics;
4178 priv->rx_handlers[STATISTICS_NOTIFICATION] = iwl4965_hw_rx_statistics;
4179
4180 priv->rx_handlers[REPLY_SCAN_CMD] = iwl4965_rx_reply_scan;
4181 priv->rx_handlers[SCAN_START_NOTIFICATION] = iwl4965_rx_scan_start_notif;
4182 priv->rx_handlers[SCAN_RESULTS_NOTIFICATION] =
4183 iwl4965_rx_scan_results_notif;
4184 priv->rx_handlers[SCAN_COMPLETE_NOTIFICATION] =
4185 iwl4965_rx_scan_complete_notif;
4186 priv->rx_handlers[CARD_STATE_NOTIFICATION] = iwl4965_rx_card_state_notif;
4187 priv->rx_handlers[REPLY_TX] = iwl4965_rx_reply_tx;
4188
4189 /* Set up hardware specific Rx handlers */
4190 iwl4965_hw_rx_handler_setup(priv);
4191 }
4192
4193 /**
4194 * iwl4965_tx_cmd_complete - Pull unused buffers off the queue and reclaim them
4195 * @rxb: Rx buffer to reclaim
4196 *
4197 * If an Rx buffer has an async callback associated with it the callback
4198 * will be executed. The attached skb (if present) will only be freed
4199 * if the callback returns 1
4200 */
4201 static void iwl4965_tx_cmd_complete(struct iwl4965_priv *priv,
4202 struct iwl4965_rx_mem_buffer *rxb)
4203 {
4204 struct iwl4965_rx_packet *pkt = (struct iwl4965_rx_packet *)rxb->skb->data;
4205 u16 sequence = le16_to_cpu(pkt->hdr.sequence);
4206 int txq_id = SEQ_TO_QUEUE(sequence);
4207 int index = SEQ_TO_INDEX(sequence);
4208 int huge = sequence & SEQ_HUGE_FRAME;
4209 int cmd_index;
4210 struct iwl4965_cmd *cmd;
4211
4212 /* If a Tx command is being handled and it isn't in the actual
4213 * command queue then there a command routing bug has been introduced
4214 * in the queue management code. */
4215 if (txq_id != IWL_CMD_QUEUE_NUM)
4216 IWL_ERROR("Error wrong command queue %d command id 0x%X\n",
4217 txq_id, pkt->hdr.cmd);
4218 BUG_ON(txq_id != IWL_CMD_QUEUE_NUM);
4219
4220 cmd_index = get_cmd_index(&priv->txq[IWL_CMD_QUEUE_NUM].q, index, huge);
4221 cmd = &priv->txq[IWL_CMD_QUEUE_NUM].cmd[cmd_index];
4222
4223 /* Input error checking is done when commands are added to queue. */
4224 if (cmd->meta.flags & CMD_WANT_SKB) {
4225 cmd->meta.source->u.skb = rxb->skb;
4226 rxb->skb = NULL;
4227 } else if (cmd->meta.u.callback &&
4228 !cmd->meta.u.callback(priv, cmd, rxb->skb))
4229 rxb->skb = NULL;
4230
4231 iwl4965_tx_queue_reclaim(priv, txq_id, index);
4232
4233 if (!(cmd->meta.flags & CMD_ASYNC)) {
4234 clear_bit(STATUS_HCMD_ACTIVE, &priv->status);
4235 wake_up_interruptible(&priv->wait_command_queue);
4236 }
4237 }
4238
4239 /************************** RX-FUNCTIONS ****************************/
4240 /*
4241 * Rx theory of operation
4242 *
4243 * Driver allocates a circular buffer of Receive Buffer Descriptors (RBDs),
4244 * each of which point to Receive Buffers to be filled by 4965. These get
4245 * used not only for Rx frames, but for any command response or notification
4246 * from the 4965. The driver and 4965 manage the Rx buffers by means
4247 * of indexes into the circular buffer.
4248 *
4249 * Rx Queue Indexes
4250 * The host/firmware share two index registers for managing the Rx buffers.
4251 *
4252 * The READ index maps to the first position that the firmware may be writing
4253 * to -- the driver can read up to (but not including) this position and get
4254 * good data.
4255 * The READ index is managed by the firmware once the card is enabled.
4256 *
4257 * The WRITE index maps to the last position the driver has read from -- the
4258 * position preceding WRITE is the last slot the firmware can place a packet.
4259 *
4260 * The queue is empty (no good data) if WRITE = READ - 1, and is full if
4261 * WRITE = READ.
4262 *
4263 * During initialization, the host sets up the READ queue position to the first
4264 * INDEX position, and WRITE to the last (READ - 1 wrapped)
4265 *
4266 * When the firmware places a packet in a buffer, it will advance the READ index
4267 * and fire the RX interrupt. The driver can then query the READ index and
4268 * process as many packets as possible, moving the WRITE index forward as it
4269 * resets the Rx queue buffers with new memory.
4270 *
4271 * The management in the driver is as follows:
4272 * + A list of pre-allocated SKBs is stored in iwl->rxq->rx_free. When
4273 * iwl->rxq->free_count drops to or below RX_LOW_WATERMARK, work is scheduled
4274 * to replenish the iwl->rxq->rx_free.
4275 * + In iwl4965_rx_replenish (scheduled) if 'processed' != 'read' then the
4276 * iwl->rxq is replenished and the READ INDEX is updated (updating the
4277 * 'processed' and 'read' driver indexes as well)
4278 * + A received packet is processed and handed to the kernel network stack,
4279 * detached from the iwl->rxq. The driver 'processed' index is updated.
4280 * + The Host/Firmware iwl->rxq is replenished at tasklet time from the rx_free
4281 * list. If there are no allocated buffers in iwl->rxq->rx_free, the READ
4282 * INDEX is not incremented and iwl->status(RX_STALLED) is set. If there
4283 * were enough free buffers and RX_STALLED is set it is cleared.
4284 *
4285 *
4286 * Driver sequence:
4287 *
4288 * iwl4965_rx_queue_alloc() Allocates rx_free
4289 * iwl4965_rx_replenish() Replenishes rx_free list from rx_used, and calls
4290 * iwl4965_rx_queue_restock
4291 * iwl4965_rx_queue_restock() Moves available buffers from rx_free into Rx
4292 * queue, updates firmware pointers, and updates
4293 * the WRITE index. If insufficient rx_free buffers
4294 * are available, schedules iwl4965_rx_replenish
4295 *
4296 * -- enable interrupts --
4297 * ISR - iwl4965_rx() Detach iwl4965_rx_mem_buffers from pool up to the
4298 * READ INDEX, detaching the SKB from the pool.
4299 * Moves the packet buffer from queue to rx_used.
4300 * Calls iwl4965_rx_queue_restock to refill any empty
4301 * slots.
4302 * ...
4303 *
4304 */
4305
4306 /**
4307 * iwl4965_rx_queue_space - Return number of free slots available in queue.
4308 */
4309 static int iwl4965_rx_queue_space(const struct iwl4965_rx_queue *q)
4310 {
4311 int s = q->read - q->write;
4312 if (s <= 0)
4313 s += RX_QUEUE_SIZE;
4314 /* keep some buffer to not confuse full and empty queue */
4315 s -= 2;
4316 if (s < 0)
4317 s = 0;
4318 return s;
4319 }
4320
4321 /**
4322 * iwl4965_rx_queue_update_write_ptr - Update the write pointer for the RX queue
4323 */
4324 int iwl4965_rx_queue_update_write_ptr(struct iwl4965_priv *priv, struct iwl4965_rx_queue *q)
4325 {
4326 u32 reg = 0;
4327 int rc = 0;
4328 unsigned long flags;
4329
4330 spin_lock_irqsave(&q->lock, flags);
4331
4332 if (q->need_update == 0)
4333 goto exit_unlock;
4334
4335 /* If power-saving is in use, make sure device is awake */
4336 if (test_bit(STATUS_POWER_PMI, &priv->status)) {
4337 reg = iwl4965_read32(priv, CSR_UCODE_DRV_GP1);
4338
4339 if (reg & CSR_UCODE_DRV_GP1_BIT_MAC_SLEEP) {
4340 iwl4965_set_bit(priv, CSR_GP_CNTRL,
4341 CSR_GP_CNTRL_REG_FLAG_MAC_ACCESS_REQ);
4342 goto exit_unlock;
4343 }
4344
4345 rc = iwl4965_grab_nic_access(priv);
4346 if (rc)
4347 goto exit_unlock;
4348
4349 /* Device expects a multiple of 8 */
4350 iwl4965_write_direct32(priv, FH_RSCSR_CHNL0_WPTR,
4351 q->write & ~0x7);
4352 iwl4965_release_nic_access(priv);
4353
4354 /* Else device is assumed to be awake */
4355 } else
4356 /* Device expects a multiple of 8 */
4357 iwl4965_write32(priv, FH_RSCSR_CHNL0_WPTR, q->write & ~0x7);
4358
4359
4360 q->need_update = 0;
4361
4362 exit_unlock:
4363 spin_unlock_irqrestore(&q->lock, flags);
4364 return rc;
4365 }
4366
4367 /**
4368 * iwl4965_dma_addr2rbd_ptr - convert a DMA address to a uCode read buffer ptr
4369 */
4370 static inline __le32 iwl4965_dma_addr2rbd_ptr(struct iwl4965_priv *priv,
4371 dma_addr_t dma_addr)
4372 {
4373 return cpu_to_le32((u32)(dma_addr >> 8));
4374 }
4375
4376
4377 /**
4378 * iwl4965_rx_queue_restock - refill RX queue from pre-allocated pool
4379 *
4380 * If there are slots in the RX queue that need to be restocked,
4381 * and we have free pre-allocated buffers, fill the ranks as much
4382 * as we can, pulling from rx_free.
4383 *
4384 * This moves the 'write' index forward to catch up with 'processed', and
4385 * also updates the memory address in the firmware to reference the new
4386 * target buffer.
4387 */
4388 static int iwl4965_rx_queue_restock(struct iwl4965_priv *priv)
4389 {
4390 struct iwl4965_rx_queue *rxq = &priv->rxq;
4391 struct list_head *element;
4392 struct iwl4965_rx_mem_buffer *rxb;
4393 unsigned long flags;
4394 int write, rc;
4395
4396 spin_lock_irqsave(&rxq->lock, flags);
4397 write = rxq->write & ~0x7;
4398 while ((iwl4965_rx_queue_space(rxq) > 0) && (rxq->free_count)) {
4399 /* Get next free Rx buffer, remove from free list */
4400 element = rxq->rx_free.next;
4401 rxb = list_entry(element, struct iwl4965_rx_mem_buffer, list);
4402 list_del(element);
4403
4404 /* Point to Rx buffer via next RBD in circular buffer */
4405 rxq->bd[rxq->write] = iwl4965_dma_addr2rbd_ptr(priv, rxb->dma_addr);
4406 rxq->queue[rxq->write] = rxb;
4407 rxq->write = (rxq->write + 1) & RX_QUEUE_MASK;
4408 rxq->free_count--;
4409 }
4410 spin_unlock_irqrestore(&rxq->lock, flags);
4411 /* If the pre-allocated buffer pool is dropping low, schedule to
4412 * refill it */
4413 if (rxq->free_count <= RX_LOW_WATERMARK)
4414 queue_work(priv->workqueue, &priv->rx_replenish);
4415
4416
4417 /* If we've added more space for the firmware to place data, tell it.
4418 * Increment device's write pointer in multiples of 8. */
4419 if ((write != (rxq->write & ~0x7))
4420 || (abs(rxq->write - rxq->read) > 7)) {
4421 spin_lock_irqsave(&rxq->lock, flags);
4422 rxq->need_update = 1;
4423 spin_unlock_irqrestore(&rxq->lock, flags);
4424 rc = iwl4965_rx_queue_update_write_ptr(priv, rxq);
4425 if (rc)
4426 return rc;
4427 }
4428
4429 return 0;
4430 }
4431
4432 /**
4433 * iwl4965_rx_replenish - Move all used packet from rx_used to rx_free
4434 *
4435 * When moving to rx_free an SKB is allocated for the slot.
4436 *
4437 * Also restock the Rx queue via iwl4965_rx_queue_restock.
4438 * This is called as a scheduled work item (except for during initialization)
4439 */
4440 static void iwl4965_rx_allocate(struct iwl4965_priv *priv)
4441 {
4442 struct iwl4965_rx_queue *rxq = &priv->rxq;
4443 struct list_head *element;
4444 struct iwl4965_rx_mem_buffer *rxb;
4445 unsigned long flags;
4446 spin_lock_irqsave(&rxq->lock, flags);
4447 while (!list_empty(&rxq->rx_used)) {
4448 element = rxq->rx_used.next;
4449 rxb = list_entry(element, struct iwl4965_rx_mem_buffer, list);
4450
4451 /* Alloc a new receive buffer */
4452 rxb->skb =
4453 alloc_skb(priv->hw_setting.rx_buf_size,
4454 __GFP_NOWARN | GFP_ATOMIC);
4455 if (!rxb->skb) {
4456 if (net_ratelimit())
4457 printk(KERN_CRIT DRV_NAME
4458 ": Can not allocate SKB buffers\n");
4459 /* We don't reschedule replenish work here -- we will
4460 * call the restock method and if it still needs
4461 * more buffers it will schedule replenish */
4462 break;
4463 }
4464 priv->alloc_rxb_skb++;
4465 list_del(element);
4466
4467 /* Get physical address of RB/SKB */
4468 rxb->dma_addr =
4469 pci_map_single(priv->pci_dev, rxb->skb->data,
4470 priv->hw_setting.rx_buf_size, PCI_DMA_FROMDEVICE);
4471 list_add_tail(&rxb->list, &rxq->rx_free);
4472 rxq->free_count++;
4473 }
4474 spin_unlock_irqrestore(&rxq->lock, flags);
4475 }
4476
4477 /*
4478 * this should be called while priv->lock is locked
4479 */
4480 static void __iwl4965_rx_replenish(void *data)
4481 {
4482 struct iwl4965_priv *priv = data;
4483
4484 iwl4965_rx_allocate(priv);
4485 iwl4965_rx_queue_restock(priv);
4486 }
4487
4488
4489 void iwl4965_rx_replenish(void *data)
4490 {
4491 struct iwl4965_priv *priv = data;
4492 unsigned long flags;
4493
4494 iwl4965_rx_allocate(priv);
4495
4496 spin_lock_irqsave(&priv->lock, flags);
4497 iwl4965_rx_queue_restock(priv);
4498 spin_unlock_irqrestore(&priv->lock, flags);
4499 }
4500
4501 /* Assumes that the skb field of the buffers in 'pool' is kept accurate.
4502 * If an SKB has been detached, the POOL needs to have its SKB set to NULL
4503 * This free routine walks the list of POOL entries and if SKB is set to
4504 * non NULL it is unmapped and freed
4505 */
4506 static void iwl4965_rx_queue_free(struct iwl4965_priv *priv, struct iwl4965_rx_queue *rxq)
4507 {
4508 int i;
4509 for (i = 0; i < RX_QUEUE_SIZE + RX_FREE_BUFFERS; i++) {
4510 if (rxq->pool[i].skb != NULL) {
4511 pci_unmap_single(priv->pci_dev,
4512 rxq->pool[i].dma_addr,
4513 priv->hw_setting.rx_buf_size,
4514 PCI_DMA_FROMDEVICE);
4515 dev_kfree_skb(rxq->pool[i].skb);
4516 }
4517 }
4518
4519 pci_free_consistent(priv->pci_dev, 4 * RX_QUEUE_SIZE, rxq->bd,
4520 rxq->dma_addr);
4521 rxq->bd = NULL;
4522 }
4523
4524 int iwl4965_rx_queue_alloc(struct iwl4965_priv *priv)
4525 {
4526 struct iwl4965_rx_queue *rxq = &priv->rxq;
4527 struct pci_dev *dev = priv->pci_dev;
4528 int i;
4529
4530 spin_lock_init(&rxq->lock);
4531 INIT_LIST_HEAD(&rxq->rx_free);
4532 INIT_LIST_HEAD(&rxq->rx_used);
4533
4534 /* Alloc the circular buffer of Read Buffer Descriptors (RBDs) */
4535 rxq->bd = pci_alloc_consistent(dev, 4 * RX_QUEUE_SIZE, &rxq->dma_addr);
4536 if (!rxq->bd)
4537 return -ENOMEM;
4538
4539 /* Fill the rx_used queue with _all_ of the Rx buffers */
4540 for (i = 0; i < RX_FREE_BUFFERS + RX_QUEUE_SIZE; i++)
4541 list_add_tail(&rxq->pool[i].list, &rxq->rx_used);
4542
4543 /* Set us so that we have processed and used all buffers, but have
4544 * not restocked the Rx queue with fresh buffers */
4545 rxq->read = rxq->write = 0;
4546 rxq->free_count = 0;
4547 rxq->need_update = 0;
4548 return 0;
4549 }
4550
4551 void iwl4965_rx_queue_reset(struct iwl4965_priv *priv, struct iwl4965_rx_queue *rxq)
4552 {
4553 unsigned long flags;
4554 int i;
4555 spin_lock_irqsave(&rxq->lock, flags);
4556 INIT_LIST_HEAD(&rxq->rx_free);
4557 INIT_LIST_HEAD(&rxq->rx_used);
4558 /* Fill the rx_used queue with _all_ of the Rx buffers */
4559 for (i = 0; i < RX_FREE_BUFFERS + RX_QUEUE_SIZE; i++) {
4560 /* In the reset function, these buffers may have been allocated
4561 * to an SKB, so we need to unmap and free potential storage */
4562 if (rxq->pool[i].skb != NULL) {
4563 pci_unmap_single(priv->pci_dev,
4564 rxq->pool[i].dma_addr,
4565 priv->hw_setting.rx_buf_size,
4566 PCI_DMA_FROMDEVICE);
4567 priv->alloc_rxb_skb--;
4568 dev_kfree_skb(rxq->pool[i].skb);
4569 rxq->pool[i].skb = NULL;
4570 }
4571 list_add_tail(&rxq->pool[i].list, &rxq->rx_used);
4572 }
4573
4574 /* Set us so that we have processed and used all buffers, but have
4575 * not restocked the Rx queue with fresh buffers */
4576 rxq->read = rxq->write = 0;
4577 rxq->free_count = 0;
4578 spin_unlock_irqrestore(&rxq->lock, flags);
4579 }
4580
4581 /* Convert linear signal-to-noise ratio into dB */
4582 static u8 ratio2dB[100] = {
4583 /* 0 1 2 3 4 5 6 7 8 9 */
4584 0, 0, 6, 10, 12, 14, 16, 17, 18, 19, /* 00 - 09 */
4585 20, 21, 22, 22, 23, 23, 24, 25, 26, 26, /* 10 - 19 */
4586 26, 26, 26, 27, 27, 28, 28, 28, 29, 29, /* 20 - 29 */
4587 29, 30, 30, 30, 31, 31, 31, 31, 32, 32, /* 30 - 39 */
4588 32, 32, 32, 33, 33, 33, 33, 33, 34, 34, /* 40 - 49 */
4589 34, 34, 34, 34, 35, 35, 35, 35, 35, 35, /* 50 - 59 */
4590 36, 36, 36, 36, 36, 36, 36, 37, 37, 37, /* 60 - 69 */
4591 37, 37, 37, 37, 37, 38, 38, 38, 38, 38, /* 70 - 79 */
4592 38, 38, 38, 38, 38, 39, 39, 39, 39, 39, /* 80 - 89 */
4593 39, 39, 39, 39, 39, 40, 40, 40, 40, 40 /* 90 - 99 */
4594 };
4595
4596 /* Calculates a relative dB value from a ratio of linear
4597 * (i.e. not dB) signal levels.
4598 * Conversion assumes that levels are voltages (20*log), not powers (10*log). */
4599 int iwl4965_calc_db_from_ratio(int sig_ratio)
4600 {
4601 /* 1000:1 or higher just report as 60 dB */
4602 if (sig_ratio >= 1000)
4603 return 60;
4604
4605 /* 100:1 or higher, divide by 10 and use table,
4606 * add 20 dB to make up for divide by 10 */
4607 if (sig_ratio >= 100)
4608 return (20 + (int)ratio2dB[sig_ratio/10]);
4609
4610 /* We shouldn't see this */
4611 if (sig_ratio < 1)
4612 return 0;
4613
4614 /* Use table for ratios 1:1 - 99:1 */
4615 return (int)ratio2dB[sig_ratio];
4616 }
4617
4618 #define PERFECT_RSSI (-20) /* dBm */
4619 #define WORST_RSSI (-95) /* dBm */
4620 #define RSSI_RANGE (PERFECT_RSSI - WORST_RSSI)
4621
4622 /* Calculate an indication of rx signal quality (a percentage, not dBm!).
4623 * See http://www.ces.clemson.edu/linux/signal_quality.shtml for info
4624 * about formulas used below. */
4625 int iwl4965_calc_sig_qual(int rssi_dbm, int noise_dbm)
4626 {
4627 int sig_qual;
4628 int degradation = PERFECT_RSSI - rssi_dbm;
4629
4630 /* If we get a noise measurement, use signal-to-noise ratio (SNR)
4631 * as indicator; formula is (signal dbm - noise dbm).
4632 * SNR at or above 40 is a great signal (100%).
4633 * Below that, scale to fit SNR of 0 - 40 dB within 0 - 100% indicator.
4634 * Weakest usable signal is usually 10 - 15 dB SNR. */
4635 if (noise_dbm) {
4636 if (rssi_dbm - noise_dbm >= 40)
4637 return 100;
4638 else if (rssi_dbm < noise_dbm)
4639 return 0;
4640 sig_qual = ((rssi_dbm - noise_dbm) * 5) / 2;
4641
4642 /* Else use just the signal level.
4643 * This formula is a least squares fit of data points collected and
4644 * compared with a reference system that had a percentage (%) display
4645 * for signal quality. */
4646 } else
4647 sig_qual = (100 * (RSSI_RANGE * RSSI_RANGE) - degradation *
4648 (15 * RSSI_RANGE + 62 * degradation)) /
4649 (RSSI_RANGE * RSSI_RANGE);
4650
4651 if (sig_qual > 100)
4652 sig_qual = 100;
4653 else if (sig_qual < 1)
4654 sig_qual = 0;
4655
4656 return sig_qual;
4657 }
4658
4659 /**
4660 * iwl4965_rx_handle - Main entry function for receiving responses from uCode
4661 *
4662 * Uses the priv->rx_handlers callback function array to invoke
4663 * the appropriate handlers, including command responses,
4664 * frame-received notifications, and other notifications.
4665 */
4666 static void iwl4965_rx_handle(struct iwl4965_priv *priv)
4667 {
4668 struct iwl4965_rx_mem_buffer *rxb;
4669 struct iwl4965_rx_packet *pkt;
4670 struct iwl4965_rx_queue *rxq = &priv->rxq;
4671 u32 r, i;
4672 int reclaim;
4673 unsigned long flags;
4674 u8 fill_rx = 0;
4675 u32 count = 8;
4676
4677 /* uCode's read index (stored in shared DRAM) indicates the last Rx
4678 * buffer that the driver may process (last buffer filled by ucode). */
4679 r = iwl4965_hw_get_rx_read(priv);
4680 i = rxq->read;
4681
4682 /* Rx interrupt, but nothing sent from uCode */
4683 if (i == r)
4684 IWL_DEBUG(IWL_DL_RX | IWL_DL_ISR, "r = %d, i = %d\n", r, i);
4685
4686 if (iwl4965_rx_queue_space(rxq) > (RX_QUEUE_SIZE / 2))
4687 fill_rx = 1;
4688
4689 while (i != r) {
4690 rxb = rxq->queue[i];
4691
4692 /* If an RXB doesn't have a Rx queue slot associated with it,
4693 * then a bug has been introduced in the queue refilling
4694 * routines -- catch it here */
4695 BUG_ON(rxb == NULL);
4696
4697 rxq->queue[i] = NULL;
4698
4699 pci_dma_sync_single_for_cpu(priv->pci_dev, rxb->dma_addr,
4700 priv->hw_setting.rx_buf_size,
4701 PCI_DMA_FROMDEVICE);
4702 pkt = (struct iwl4965_rx_packet *)rxb->skb->data;
4703
4704 /* Reclaim a command buffer only if this packet is a response
4705 * to a (driver-originated) command.
4706 * If the packet (e.g. Rx frame) originated from uCode,
4707 * there is no command buffer to reclaim.
4708 * Ucode should set SEQ_RX_FRAME bit if ucode-originated,
4709 * but apparently a few don't get set; catch them here. */
4710 reclaim = !(pkt->hdr.sequence & SEQ_RX_FRAME) &&
4711 (pkt->hdr.cmd != REPLY_RX_PHY_CMD) &&
4712 (pkt->hdr.cmd != REPLY_4965_RX) &&
4713 (pkt->hdr.cmd != REPLY_COMPRESSED_BA) &&
4714 (pkt->hdr.cmd != STATISTICS_NOTIFICATION) &&
4715 (pkt->hdr.cmd != REPLY_TX);
4716
4717 /* Based on type of command response or notification,
4718 * handle those that need handling via function in
4719 * rx_handlers table. See iwl4965_setup_rx_handlers() */
4720 if (priv->rx_handlers[pkt->hdr.cmd]) {
4721 IWL_DEBUG(IWL_DL_HOST_COMMAND | IWL_DL_RX | IWL_DL_ISR,
4722 "r = %d, i = %d, %s, 0x%02x\n", r, i,
4723 get_cmd_string(pkt->hdr.cmd), pkt->hdr.cmd);
4724 priv->rx_handlers[pkt->hdr.cmd] (priv, rxb);
4725 } else {
4726 /* No handling needed */
4727 IWL_DEBUG(IWL_DL_HOST_COMMAND | IWL_DL_RX | IWL_DL_ISR,
4728 "r %d i %d No handler needed for %s, 0x%02x\n",
4729 r, i, get_cmd_string(pkt->hdr.cmd),
4730 pkt->hdr.cmd);
4731 }
4732
4733 if (reclaim) {
4734 /* Invoke any callbacks, transfer the skb to caller, and
4735 * fire off the (possibly) blocking iwl4965_send_cmd()
4736 * as we reclaim the driver command queue */
4737 if (rxb && rxb->skb)
4738 iwl4965_tx_cmd_complete(priv, rxb);
4739 else
4740 IWL_WARNING("Claim null rxb?\n");
4741 }
4742
4743 /* For now we just don't re-use anything. We can tweak this
4744 * later to try and re-use notification packets and SKBs that
4745 * fail to Rx correctly */
4746 if (rxb->skb != NULL) {
4747 priv->alloc_rxb_skb--;
4748 dev_kfree_skb_any(rxb->skb);
4749 rxb->skb = NULL;
4750 }
4751
4752 pci_unmap_single(priv->pci_dev, rxb->dma_addr,
4753 priv->hw_setting.rx_buf_size,
4754 PCI_DMA_FROMDEVICE);
4755 spin_lock_irqsave(&rxq->lock, flags);
4756 list_add_tail(&rxb->list, &priv->rxq.rx_used);
4757 spin_unlock_irqrestore(&rxq->lock, flags);
4758 i = (i + 1) & RX_QUEUE_MASK;
4759 /* If there are a lot of unused frames,
4760 * restock the Rx queue so ucode wont assert. */
4761 if (fill_rx) {
4762 count++;
4763 if (count >= 8) {
4764 priv->rxq.read = i;
4765 __iwl4965_rx_replenish(priv);
4766 count = 0;
4767 }
4768 }
4769 }
4770
4771 /* Backtrack one entry */
4772 priv->rxq.read = i;
4773 iwl4965_rx_queue_restock(priv);
4774 }
4775
4776 /**
4777 * iwl4965_tx_queue_update_write_ptr - Send new write index to hardware
4778 */
4779 static int iwl4965_tx_queue_update_write_ptr(struct iwl4965_priv *priv,
4780 struct iwl4965_tx_queue *txq)
4781 {
4782 u32 reg = 0;
4783 int rc = 0;
4784 int txq_id = txq->q.id;
4785
4786 if (txq->need_update == 0)
4787 return rc;
4788
4789 /* if we're trying to save power */
4790 if (test_bit(STATUS_POWER_PMI, &priv->status)) {
4791 /* wake up nic if it's powered down ...
4792 * uCode will wake up, and interrupt us again, so next
4793 * time we'll skip this part. */
4794 reg = iwl4965_read32(priv, CSR_UCODE_DRV_GP1);
4795
4796 if (reg & CSR_UCODE_DRV_GP1_BIT_MAC_SLEEP) {
4797 IWL_DEBUG_INFO("Requesting wakeup, GP1 = 0x%x\n", reg);
4798 iwl4965_set_bit(priv, CSR_GP_CNTRL,
4799 CSR_GP_CNTRL_REG_FLAG_MAC_ACCESS_REQ);
4800 return rc;
4801 }
4802
4803 /* restore this queue's parameters in nic hardware. */
4804 rc = iwl4965_grab_nic_access(priv);
4805 if (rc)
4806 return rc;
4807 iwl4965_write_direct32(priv, HBUS_TARG_WRPTR,
4808 txq->q.write_ptr | (txq_id << 8));
4809 iwl4965_release_nic_access(priv);
4810
4811 /* else not in power-save mode, uCode will never sleep when we're
4812 * trying to tx (during RFKILL, we're not trying to tx). */
4813 } else
4814 iwl4965_write32(priv, HBUS_TARG_WRPTR,
4815 txq->q.write_ptr | (txq_id << 8));
4816
4817 txq->need_update = 0;
4818
4819 return rc;
4820 }
4821
4822 #ifdef CONFIG_IWL4965_DEBUG
4823 static void iwl4965_print_rx_config_cmd(struct iwl4965_rxon_cmd *rxon)
4824 {
4825 DECLARE_MAC_BUF(mac);
4826
4827 IWL_DEBUG_RADIO("RX CONFIG:\n");
4828 iwl4965_print_hex_dump(IWL_DL_RADIO, (u8 *) rxon, sizeof(*rxon));
4829 IWL_DEBUG_RADIO("u16 channel: 0x%x\n", le16_to_cpu(rxon->channel));
4830 IWL_DEBUG_RADIO("u32 flags: 0x%08X\n", le32_to_cpu(rxon->flags));
4831 IWL_DEBUG_RADIO("u32 filter_flags: 0x%08x\n",
4832 le32_to_cpu(rxon->filter_flags));
4833 IWL_DEBUG_RADIO("u8 dev_type: 0x%x\n", rxon->dev_type);
4834 IWL_DEBUG_RADIO("u8 ofdm_basic_rates: 0x%02x\n",
4835 rxon->ofdm_basic_rates);
4836 IWL_DEBUG_RADIO("u8 cck_basic_rates: 0x%02x\n", rxon->cck_basic_rates);
4837 IWL_DEBUG_RADIO("u8[6] node_addr: %s\n",
4838 print_mac(mac, rxon->node_addr));
4839 IWL_DEBUG_RADIO("u8[6] bssid_addr: %s\n",
4840 print_mac(mac, rxon->bssid_addr));
4841 IWL_DEBUG_RADIO("u16 assoc_id: 0x%x\n", le16_to_cpu(rxon->assoc_id));
4842 }
4843 #endif
4844
4845 static void iwl4965_enable_interrupts(struct iwl4965_priv *priv)
4846 {
4847 IWL_DEBUG_ISR("Enabling interrupts\n");
4848 set_bit(STATUS_INT_ENABLED, &priv->status);
4849 iwl4965_write32(priv, CSR_INT_MASK, CSR_INI_SET_MASK);
4850 }
4851
4852 static inline void iwl4965_disable_interrupts(struct iwl4965_priv *priv)
4853 {
4854 clear_bit(STATUS_INT_ENABLED, &priv->status);
4855
4856 /* disable interrupts from uCode/NIC to host */
4857 iwl4965_write32(priv, CSR_INT_MASK, 0x00000000);
4858
4859 /* acknowledge/clear/reset any interrupts still pending
4860 * from uCode or flow handler (Rx/Tx DMA) */
4861 iwl4965_write32(priv, CSR_INT, 0xffffffff);
4862 iwl4965_write32(priv, CSR_FH_INT_STATUS, 0xffffffff);
4863 IWL_DEBUG_ISR("Disabled interrupts\n");
4864 }
4865
4866 static const char *desc_lookup(int i)
4867 {
4868 switch (i) {
4869 case 1:
4870 return "FAIL";
4871 case 2:
4872 return "BAD_PARAM";
4873 case 3:
4874 return "BAD_CHECKSUM";
4875 case 4:
4876 return "NMI_INTERRUPT";
4877 case 5:
4878 return "SYSASSERT";
4879 case 6:
4880 return "FATAL_ERROR";
4881 }
4882
4883 return "UNKNOWN";
4884 }
4885
4886 #define ERROR_START_OFFSET (1 * sizeof(u32))
4887 #define ERROR_ELEM_SIZE (7 * sizeof(u32))
4888
4889 static void iwl4965_dump_nic_error_log(struct iwl4965_priv *priv)
4890 {
4891 u32 data2, line;
4892 u32 desc, time, count, base, data1;
4893 u32 blink1, blink2, ilink1, ilink2;
4894 int rc;
4895
4896 base = le32_to_cpu(priv->card_alive.error_event_table_ptr);
4897
4898 if (!iwl4965_hw_valid_rtc_data_addr(base)) {
4899 IWL_ERROR("Not valid error log pointer 0x%08X\n", base);
4900 return;
4901 }
4902
4903 rc = iwl4965_grab_nic_access(priv);
4904 if (rc) {
4905 IWL_WARNING("Can not read from adapter at this time.\n");
4906 return;
4907 }
4908
4909 count = iwl4965_read_targ_mem(priv, base);
4910
4911 if (ERROR_START_OFFSET <= count * ERROR_ELEM_SIZE) {
4912 IWL_ERROR("Start IWL Error Log Dump:\n");
4913 IWL_ERROR("Status: 0x%08lX, Config: %08X count: %d\n",
4914 priv->status, priv->config, count);
4915 }
4916
4917 desc = iwl4965_read_targ_mem(priv, base + 1 * sizeof(u32));
4918 blink1 = iwl4965_read_targ_mem(priv, base + 3 * sizeof(u32));
4919 blink2 = iwl4965_read_targ_mem(priv, base + 4 * sizeof(u32));
4920 ilink1 = iwl4965_read_targ_mem(priv, base + 5 * sizeof(u32));
4921 ilink2 = iwl4965_read_targ_mem(priv, base + 6 * sizeof(u32));
4922 data1 = iwl4965_read_targ_mem(priv, base + 7 * sizeof(u32));
4923 data2 = iwl4965_read_targ_mem(priv, base + 8 * sizeof(u32));
4924 line = iwl4965_read_targ_mem(priv, base + 9 * sizeof(u32));
4925 time = iwl4965_read_targ_mem(priv, base + 11 * sizeof(u32));
4926
4927 IWL_ERROR("Desc Time "
4928 "data1 data2 line\n");
4929 IWL_ERROR("%-13s (#%d) %010u 0x%08X 0x%08X %u\n",
4930 desc_lookup(desc), desc, time, data1, data2, line);
4931 IWL_ERROR("blink1 blink2 ilink1 ilink2\n");
4932 IWL_ERROR("0x%05X 0x%05X 0x%05X 0x%05X\n", blink1, blink2,
4933 ilink1, ilink2);
4934
4935 iwl4965_release_nic_access(priv);
4936 }
4937
4938 #define EVENT_START_OFFSET (4 * sizeof(u32))
4939
4940 /**
4941 * iwl4965_print_event_log - Dump error event log to syslog
4942 *
4943 * NOTE: Must be called with iwl4965_grab_nic_access() already obtained!
4944 */
4945 static void iwl4965_print_event_log(struct iwl4965_priv *priv, u32 start_idx,
4946 u32 num_events, u32 mode)
4947 {
4948 u32 i;
4949 u32 base; /* SRAM byte address of event log header */
4950 u32 event_size; /* 2 u32s, or 3 u32s if timestamp recorded */
4951 u32 ptr; /* SRAM byte address of log data */
4952 u32 ev, time, data; /* event log data */
4953
4954 if (num_events == 0)
4955 return;
4956
4957 base = le32_to_cpu(priv->card_alive.log_event_table_ptr);
4958
4959 if (mode == 0)
4960 event_size = 2 * sizeof(u32);
4961 else
4962 event_size = 3 * sizeof(u32);
4963
4964 ptr = base + EVENT_START_OFFSET + (start_idx * event_size);
4965
4966 /* "time" is actually "data" for mode 0 (no timestamp).
4967 * place event id # at far right for easier visual parsing. */
4968 for (i = 0; i < num_events; i++) {
4969 ev = iwl4965_read_targ_mem(priv, ptr);
4970 ptr += sizeof(u32);
4971 time = iwl4965_read_targ_mem(priv, ptr);
4972 ptr += sizeof(u32);
4973 if (mode == 0)
4974 IWL_ERROR("0x%08x\t%04u\n", time, ev); /* data, ev */
4975 else {
4976 data = iwl4965_read_targ_mem(priv, ptr);
4977 ptr += sizeof(u32);
4978 IWL_ERROR("%010u\t0x%08x\t%04u\n", time, data, ev);
4979 }
4980 }
4981 }
4982
4983 static void iwl4965_dump_nic_event_log(struct iwl4965_priv *priv)
4984 {
4985 int rc;
4986 u32 base; /* SRAM byte address of event log header */
4987 u32 capacity; /* event log capacity in # entries */
4988 u32 mode; /* 0 - no timestamp, 1 - timestamp recorded */
4989 u32 num_wraps; /* # times uCode wrapped to top of log */
4990 u32 next_entry; /* index of next entry to be written by uCode */
4991 u32 size; /* # entries that we'll print */
4992
4993 base = le32_to_cpu(priv->card_alive.log_event_table_ptr);
4994 if (!iwl4965_hw_valid_rtc_data_addr(base)) {
4995 IWL_ERROR("Invalid event log pointer 0x%08X\n", base);
4996 return;
4997 }
4998
4999 rc = iwl4965_grab_nic_access(priv);
5000 if (rc) {
5001 IWL_WARNING("Can not read from adapter at this time.\n");
5002 return;
5003 }
5004
5005 /* event log header */
5006 capacity = iwl4965_read_targ_mem(priv, base);
5007 mode = iwl4965_read_targ_mem(priv, base + (1 * sizeof(u32)));
5008 num_wraps = iwl4965_read_targ_mem(priv, base + (2 * sizeof(u32)));
5009 next_entry = iwl4965_read_targ_mem(priv, base + (3 * sizeof(u32)));
5010
5011 size = num_wraps ? capacity : next_entry;
5012
5013 /* bail out if nothing in log */
5014 if (size == 0) {
5015 IWL_ERROR("Start IWL Event Log Dump: nothing in log\n");
5016 iwl4965_release_nic_access(priv);
5017 return;
5018 }
5019
5020 IWL_ERROR("Start IWL Event Log Dump: display count %d, wraps %d\n",
5021 size, num_wraps);
5022
5023 /* if uCode has wrapped back to top of log, start at the oldest entry,
5024 * i.e the next one that uCode would fill. */
5025 if (num_wraps)
5026 iwl4965_print_event_log(priv, next_entry,
5027 capacity - next_entry, mode);
5028
5029 /* (then/else) start at top of log */
5030 iwl4965_print_event_log(priv, 0, next_entry, mode);
5031
5032 iwl4965_release_nic_access(priv);
5033 }
5034
5035 /**
5036 * iwl4965_irq_handle_error - called for HW or SW error interrupt from card
5037 */
5038 static void iwl4965_irq_handle_error(struct iwl4965_priv *priv)
5039 {
5040 /* Set the FW error flag -- cleared on iwl4965_down */
5041 set_bit(STATUS_FW_ERROR, &priv->status);
5042
5043 /* Cancel currently queued command. */
5044 clear_bit(STATUS_HCMD_ACTIVE, &priv->status);
5045
5046 #ifdef CONFIG_IWL4965_DEBUG
5047 if (iwl4965_debug_level & IWL_DL_FW_ERRORS) {
5048 iwl4965_dump_nic_error_log(priv);
5049 iwl4965_dump_nic_event_log(priv);
5050 iwl4965_print_rx_config_cmd(&priv->staging_rxon);
5051 }
5052 #endif
5053
5054 wake_up_interruptible(&priv->wait_command_queue);
5055
5056 /* Keep the restart process from trying to send host
5057 * commands by clearing the INIT status bit */
5058 clear_bit(STATUS_READY, &priv->status);
5059
5060 if (!test_bit(STATUS_EXIT_PENDING, &priv->status)) {
5061 IWL_DEBUG(IWL_DL_INFO | IWL_DL_FW_ERRORS,
5062 "Restarting adapter due to uCode error.\n");
5063
5064 if (iwl4965_is_associated(priv)) {
5065 memcpy(&priv->recovery_rxon, &priv->active_rxon,
5066 sizeof(priv->recovery_rxon));
5067 priv->error_recovering = 1;
5068 }
5069 queue_work(priv->workqueue, &priv->restart);
5070 }
5071 }
5072
5073 static void iwl4965_error_recovery(struct iwl4965_priv *priv)
5074 {
5075 unsigned long flags;
5076
5077 memcpy(&priv->staging_rxon, &priv->recovery_rxon,
5078 sizeof(priv->staging_rxon));
5079 priv->staging_rxon.filter_flags &= ~RXON_FILTER_ASSOC_MSK;
5080 iwl4965_commit_rxon(priv);
5081
5082 iwl4965_rxon_add_station(priv, priv->bssid, 1);
5083
5084 spin_lock_irqsave(&priv->lock, flags);
5085 priv->assoc_id = le16_to_cpu(priv->staging_rxon.assoc_id);
5086 priv->error_recovering = 0;
5087 spin_unlock_irqrestore(&priv->lock, flags);
5088 }
5089
5090 static void iwl4965_irq_tasklet(struct iwl4965_priv *priv)
5091 {
5092 u32 inta, handled = 0;
5093 u32 inta_fh;
5094 unsigned long flags;
5095 #ifdef CONFIG_IWL4965_DEBUG
5096 u32 inta_mask;
5097 #endif
5098
5099 spin_lock_irqsave(&priv->lock, flags);
5100
5101 /* Ack/clear/reset pending uCode interrupts.
5102 * Note: Some bits in CSR_INT are "OR" of bits in CSR_FH_INT_STATUS,
5103 * and will clear only when CSR_FH_INT_STATUS gets cleared. */
5104 inta = iwl4965_read32(priv, CSR_INT);
5105 iwl4965_write32(priv, CSR_INT, inta);
5106
5107 /* Ack/clear/reset pending flow-handler (DMA) interrupts.
5108 * Any new interrupts that happen after this, either while we're
5109 * in this tasklet, or later, will show up in next ISR/tasklet. */
5110 inta_fh = iwl4965_read32(priv, CSR_FH_INT_STATUS);
5111 iwl4965_write32(priv, CSR_FH_INT_STATUS, inta_fh);
5112
5113 #ifdef CONFIG_IWL4965_DEBUG
5114 if (iwl4965_debug_level & IWL_DL_ISR) {
5115 /* just for debug */
5116 inta_mask = iwl4965_read32(priv, CSR_INT_MASK);
5117 IWL_DEBUG_ISR("inta 0x%08x, enabled 0x%08x, fh 0x%08x\n",
5118 inta, inta_mask, inta_fh);
5119 }
5120 #endif
5121
5122 /* Since CSR_INT and CSR_FH_INT_STATUS reads and clears are not
5123 * atomic, make sure that inta covers all the interrupts that
5124 * we've discovered, even if FH interrupt came in just after
5125 * reading CSR_INT. */
5126 if (inta_fh & CSR_FH_INT_RX_MASK)
5127 inta |= CSR_INT_BIT_FH_RX;
5128 if (inta_fh & CSR_FH_INT_TX_MASK)
5129 inta |= CSR_INT_BIT_FH_TX;
5130
5131 /* Now service all interrupt bits discovered above. */
5132 if (inta & CSR_INT_BIT_HW_ERR) {
5133 IWL_ERROR("Microcode HW error detected. Restarting.\n");
5134
5135 /* Tell the device to stop sending interrupts */
5136 iwl4965_disable_interrupts(priv);
5137
5138 iwl4965_irq_handle_error(priv);
5139
5140 handled |= CSR_INT_BIT_HW_ERR;
5141
5142 spin_unlock_irqrestore(&priv->lock, flags);
5143
5144 return;
5145 }
5146
5147 #ifdef CONFIG_IWL4965_DEBUG
5148 if (iwl4965_debug_level & (IWL_DL_ISR)) {
5149 /* NIC fires this, but we don't use it, redundant with WAKEUP */
5150 if (inta & CSR_INT_BIT_SCD)
5151 IWL_DEBUG_ISR("Scheduler finished to transmit "
5152 "the frame/frames.\n");
5153
5154 /* Alive notification via Rx interrupt will do the real work */
5155 if (inta & CSR_INT_BIT_ALIVE)
5156 IWL_DEBUG_ISR("Alive interrupt\n");
5157 }
5158 #endif
5159 /* Safely ignore these bits for debug checks below */
5160 inta &= ~(CSR_INT_BIT_SCD | CSR_INT_BIT_ALIVE);
5161
5162 /* HW RF KILL switch toggled */
5163 if (inta & CSR_INT_BIT_RF_KILL) {
5164 int hw_rf_kill = 0;
5165 if (!(iwl4965_read32(priv, CSR_GP_CNTRL) &
5166 CSR_GP_CNTRL_REG_FLAG_HW_RF_KILL_SW))
5167 hw_rf_kill = 1;
5168
5169 IWL_DEBUG(IWL_DL_INFO | IWL_DL_RF_KILL | IWL_DL_ISR,
5170 "RF_KILL bit toggled to %s.\n",
5171 hw_rf_kill ? "disable radio":"enable radio");
5172
5173 /* Queue restart only if RF_KILL switch was set to "kill"
5174 * when we loaded driver, and is now set to "enable".
5175 * After we're Alive, RF_KILL gets handled by
5176 * iwl_rx_card_state_notif() */
5177 if (!hw_rf_kill && !test_bit(STATUS_ALIVE, &priv->status)) {
5178 clear_bit(STATUS_RF_KILL_HW, &priv->status);
5179 queue_work(priv->workqueue, &priv->restart);
5180 }
5181
5182 handled |= CSR_INT_BIT_RF_KILL;
5183 }
5184
5185 /* Chip got too hot and stopped itself */
5186 if (inta & CSR_INT_BIT_CT_KILL) {
5187 IWL_ERROR("Microcode CT kill error detected.\n");
5188 handled |= CSR_INT_BIT_CT_KILL;
5189 }
5190
5191 /* Error detected by uCode */
5192 if (inta & CSR_INT_BIT_SW_ERR) {
5193 IWL_ERROR("Microcode SW error detected. Restarting 0x%X.\n",
5194 inta);
5195 iwl4965_irq_handle_error(priv);
5196 handled |= CSR_INT_BIT_SW_ERR;
5197 }
5198
5199 /* uCode wakes up after power-down sleep */
5200 if (inta & CSR_INT_BIT_WAKEUP) {
5201 IWL_DEBUG_ISR("Wakeup interrupt\n");
5202 iwl4965_rx_queue_update_write_ptr(priv, &priv->rxq);
5203 iwl4965_tx_queue_update_write_ptr(priv, &priv->txq[0]);
5204 iwl4965_tx_queue_update_write_ptr(priv, &priv->txq[1]);
5205 iwl4965_tx_queue_update_write_ptr(priv, &priv->txq[2]);
5206 iwl4965_tx_queue_update_write_ptr(priv, &priv->txq[3]);
5207 iwl4965_tx_queue_update_write_ptr(priv, &priv->txq[4]);
5208 iwl4965_tx_queue_update_write_ptr(priv, &priv->txq[5]);
5209
5210 handled |= CSR_INT_BIT_WAKEUP;
5211 }
5212
5213 /* All uCode command responses, including Tx command responses,
5214 * Rx "responses" (frame-received notification), and other
5215 * notifications from uCode come through here*/
5216 if (inta & (CSR_INT_BIT_FH_RX | CSR_INT_BIT_SW_RX)) {
5217 iwl4965_rx_handle(priv);
5218 handled |= (CSR_INT_BIT_FH_RX | CSR_INT_BIT_SW_RX);
5219 }
5220
5221 if (inta & CSR_INT_BIT_FH_TX) {
5222 IWL_DEBUG_ISR("Tx interrupt\n");
5223 handled |= CSR_INT_BIT_FH_TX;
5224 }
5225
5226 if (inta & ~handled)
5227 IWL_ERROR("Unhandled INTA bits 0x%08x\n", inta & ~handled);
5228
5229 if (inta & ~CSR_INI_SET_MASK) {
5230 IWL_WARNING("Disabled INTA bits 0x%08x were pending\n",
5231 inta & ~CSR_INI_SET_MASK);
5232 IWL_WARNING(" with FH_INT = 0x%08x\n", inta_fh);
5233 }
5234
5235 /* Re-enable all interrupts */
5236 iwl4965_enable_interrupts(priv);
5237
5238 #ifdef CONFIG_IWL4965_DEBUG
5239 if (iwl4965_debug_level & (IWL_DL_ISR)) {
5240 inta = iwl4965_read32(priv, CSR_INT);
5241 inta_mask = iwl4965_read32(priv, CSR_INT_MASK);
5242 inta_fh = iwl4965_read32(priv, CSR_FH_INT_STATUS);
5243 IWL_DEBUG_ISR("End inta 0x%08x, enabled 0x%08x, fh 0x%08x, "
5244 "flags 0x%08lx\n", inta, inta_mask, inta_fh, flags);
5245 }
5246 #endif
5247 spin_unlock_irqrestore(&priv->lock, flags);
5248 }
5249
5250 static irqreturn_t iwl4965_isr(int irq, void *data)
5251 {
5252 struct iwl4965_priv *priv = data;
5253 u32 inta, inta_mask;
5254 u32 inta_fh;
5255 if (!priv)
5256 return IRQ_NONE;
5257
5258 spin_lock(&priv->lock);
5259
5260 /* Disable (but don't clear!) interrupts here to avoid
5261 * back-to-back ISRs and sporadic interrupts from our NIC.
5262 * If we have something to service, the tasklet will re-enable ints.
5263 * If we *don't* have something, we'll re-enable before leaving here. */
5264 inta_mask = iwl4965_read32(priv, CSR_INT_MASK); /* just for debug */
5265 iwl4965_write32(priv, CSR_INT_MASK, 0x00000000);
5266
5267 /* Discover which interrupts are active/pending */
5268 inta = iwl4965_read32(priv, CSR_INT);
5269 inta_fh = iwl4965_read32(priv, CSR_FH_INT_STATUS);
5270
5271 /* Ignore interrupt if there's nothing in NIC to service.
5272 * This may be due to IRQ shared with another device,
5273 * or due to sporadic interrupts thrown from our NIC. */
5274 if (!inta && !inta_fh) {
5275 IWL_DEBUG_ISR("Ignore interrupt, inta == 0, inta_fh == 0\n");
5276 goto none;
5277 }
5278
5279 if ((inta == 0xFFFFFFFF) || ((inta & 0xFFFFFFF0) == 0xa5a5a5a0)) {
5280 /* Hardware disappeared. It might have already raised
5281 * an interrupt */
5282 IWL_WARNING("HARDWARE GONE?? INTA == 0x%080x\n", inta);
5283 goto unplugged;
5284 }
5285
5286 IWL_DEBUG_ISR("ISR inta 0x%08x, enabled 0x%08x, fh 0x%08x\n",
5287 inta, inta_mask, inta_fh);
5288
5289 inta &= ~CSR_INT_BIT_SCD;
5290
5291 /* iwl4965_irq_tasklet() will service interrupts and re-enable them */
5292 if (likely(inta || inta_fh))
5293 tasklet_schedule(&priv->irq_tasklet);
5294
5295 unplugged:
5296 spin_unlock(&priv->lock);
5297 return IRQ_HANDLED;
5298
5299 none:
5300 /* re-enable interrupts here since we don't have anything to service. */
5301 iwl4965_enable_interrupts(priv);
5302 spin_unlock(&priv->lock);
5303 return IRQ_NONE;
5304 }
5305
5306 /************************** EEPROM BANDS ****************************
5307 *
5308 * The iwl4965_eeprom_band definitions below provide the mapping from the
5309 * EEPROM contents to the specific channel number supported for each
5310 * band.
5311 *
5312 * For example, iwl4965_priv->eeprom.band_3_channels[4] from the band_3
5313 * definition below maps to physical channel 42 in the 5.2GHz spectrum.
5314 * The specific geography and calibration information for that channel
5315 * is contained in the eeprom map itself.
5316 *
5317 * During init, we copy the eeprom information and channel map
5318 * information into priv->channel_info_24/52 and priv->channel_map_24/52
5319 *
5320 * channel_map_24/52 provides the index in the channel_info array for a
5321 * given channel. We have to have two separate maps as there is channel
5322 * overlap with the 2.4GHz and 5.2GHz spectrum as seen in band_1 and
5323 * band_2
5324 *
5325 * A value of 0xff stored in the channel_map indicates that the channel
5326 * is not supported by the hardware at all.
5327 *
5328 * A value of 0xfe in the channel_map indicates that the channel is not
5329 * valid for Tx with the current hardware. This means that
5330 * while the system can tune and receive on a given channel, it may not
5331 * be able to associate or transmit any frames on that
5332 * channel. There is no corresponding channel information for that
5333 * entry.
5334 *
5335 *********************************************************************/
5336
5337 /* 2.4 GHz */
5338 static const u8 iwl4965_eeprom_band_1[14] = {
5339 1, 2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13, 14
5340 };
5341
5342 /* 5.2 GHz bands */
5343 static const u8 iwl4965_eeprom_band_2[] = { /* 4915-5080MHz */
5344 183, 184, 185, 187, 188, 189, 192, 196, 7, 8, 11, 12, 16
5345 };
5346
5347 static const u8 iwl4965_eeprom_band_3[] = { /* 5170-5320MHz */
5348 34, 36, 38, 40, 42, 44, 46, 48, 52, 56, 60, 64
5349 };
5350
5351 static const u8 iwl4965_eeprom_band_4[] = { /* 5500-5700MHz */
5352 100, 104, 108, 112, 116, 120, 124, 128, 132, 136, 140
5353 };
5354
5355 static const u8 iwl4965_eeprom_band_5[] = { /* 5725-5825MHz */
5356 145, 149, 153, 157, 161, 165
5357 };
5358
5359 static u8 iwl4965_eeprom_band_6[] = { /* 2.4 FAT channel */
5360 1, 2, 3, 4, 5, 6, 7
5361 };
5362
5363 static u8 iwl4965_eeprom_band_7[] = { /* 5.2 FAT channel */
5364 36, 44, 52, 60, 100, 108, 116, 124, 132, 149, 157
5365 };
5366
5367 static void iwl4965_init_band_reference(const struct iwl4965_priv *priv,
5368 int band,
5369 int *eeprom_ch_count,
5370 const struct iwl4965_eeprom_channel
5371 **eeprom_ch_info,
5372 const u8 **eeprom_ch_index)
5373 {
5374 switch (band) {
5375 case 1: /* 2.4GHz band */
5376 *eeprom_ch_count = ARRAY_SIZE(iwl4965_eeprom_band_1);
5377 *eeprom_ch_info = priv->eeprom.band_1_channels;
5378 *eeprom_ch_index = iwl4965_eeprom_band_1;
5379 break;
5380 case 2: /* 4.9GHz band */
5381 *eeprom_ch_count = ARRAY_SIZE(iwl4965_eeprom_band_2);
5382 *eeprom_ch_info = priv->eeprom.band_2_channels;
5383 *eeprom_ch_index = iwl4965_eeprom_band_2;
5384 break;
5385 case 3: /* 5.2GHz band */
5386 *eeprom_ch_count = ARRAY_SIZE(iwl4965_eeprom_band_3);
5387 *eeprom_ch_info = priv->eeprom.band_3_channels;
5388 *eeprom_ch_index = iwl4965_eeprom_band_3;
5389 break;
5390 case 4: /* 5.5GHz band */
5391 *eeprom_ch_count = ARRAY_SIZE(iwl4965_eeprom_band_4);
5392 *eeprom_ch_info = priv->eeprom.band_4_channels;
5393 *eeprom_ch_index = iwl4965_eeprom_band_4;
5394 break;
5395 case 5: /* 5.7GHz band */
5396 *eeprom_ch_count = ARRAY_SIZE(iwl4965_eeprom_band_5);
5397 *eeprom_ch_info = priv->eeprom.band_5_channels;
5398 *eeprom_ch_index = iwl4965_eeprom_band_5;
5399 break;
5400 case 6: /* 2.4GHz FAT channels */
5401 *eeprom_ch_count = ARRAY_SIZE(iwl4965_eeprom_band_6);
5402 *eeprom_ch_info = priv->eeprom.band_24_channels;
5403 *eeprom_ch_index = iwl4965_eeprom_band_6;
5404 break;
5405 case 7: /* 5 GHz FAT channels */
5406 *eeprom_ch_count = ARRAY_SIZE(iwl4965_eeprom_band_7);
5407 *eeprom_ch_info = priv->eeprom.band_52_channels;
5408 *eeprom_ch_index = iwl4965_eeprom_band_7;
5409 break;
5410 default:
5411 BUG();
5412 return;
5413 }
5414 }
5415
5416 /**
5417 * iwl4965_get_channel_info - Find driver's private channel info
5418 *
5419 * Based on band and channel number.
5420 */
5421 const struct iwl4965_channel_info *iwl4965_get_channel_info(const struct iwl4965_priv *priv,
5422 int phymode, u16 channel)
5423 {
5424 int i;
5425
5426 switch (phymode) {
5427 case MODE_IEEE80211A:
5428 for (i = 14; i < priv->channel_count; i++) {
5429 if (priv->channel_info[i].channel == channel)
5430 return &priv->channel_info[i];
5431 }
5432 break;
5433
5434 case MODE_IEEE80211B:
5435 case MODE_IEEE80211G:
5436 if (channel >= 1 && channel <= 14)
5437 return &priv->channel_info[channel - 1];
5438 break;
5439
5440 }
5441
5442 return NULL;
5443 }
5444
5445 #define CHECK_AND_PRINT(x) ((eeprom_ch_info[ch].flags & EEPROM_CHANNEL_##x) \
5446 ? # x " " : "")
5447
5448 /**
5449 * iwl4965_init_channel_map - Set up driver's info for all possible channels
5450 */
5451 static int iwl4965_init_channel_map(struct iwl4965_priv *priv)
5452 {
5453 int eeprom_ch_count = 0;
5454 const u8 *eeprom_ch_index = NULL;
5455 const struct iwl4965_eeprom_channel *eeprom_ch_info = NULL;
5456 int band, ch;
5457 struct iwl4965_channel_info *ch_info;
5458
5459 if (priv->channel_count) {
5460 IWL_DEBUG_INFO("Channel map already initialized.\n");
5461 return 0;
5462 }
5463
5464 if (priv->eeprom.version < 0x2f) {
5465 IWL_WARNING("Unsupported EEPROM version: 0x%04X\n",
5466 priv->eeprom.version);
5467 return -EINVAL;
5468 }
5469
5470 IWL_DEBUG_INFO("Initializing regulatory info from EEPROM\n");
5471
5472 priv->channel_count =
5473 ARRAY_SIZE(iwl4965_eeprom_band_1) +
5474 ARRAY_SIZE(iwl4965_eeprom_band_2) +
5475 ARRAY_SIZE(iwl4965_eeprom_band_3) +
5476 ARRAY_SIZE(iwl4965_eeprom_band_4) +
5477 ARRAY_SIZE(iwl4965_eeprom_band_5);
5478
5479 IWL_DEBUG_INFO("Parsing data for %d channels.\n", priv->channel_count);
5480
5481 priv->channel_info = kzalloc(sizeof(struct iwl4965_channel_info) *
5482 priv->channel_count, GFP_KERNEL);
5483 if (!priv->channel_info) {
5484 IWL_ERROR("Could not allocate channel_info\n");
5485 priv->channel_count = 0;
5486 return -ENOMEM;
5487 }
5488
5489 ch_info = priv->channel_info;
5490
5491 /* Loop through the 5 EEPROM bands adding them in order to the
5492 * channel map we maintain (that contains additional information than
5493 * what just in the EEPROM) */
5494 for (band = 1; band <= 5; band++) {
5495
5496 iwl4965_init_band_reference(priv, band, &eeprom_ch_count,
5497 &eeprom_ch_info, &eeprom_ch_index);
5498
5499 /* Loop through each band adding each of the channels */
5500 for (ch = 0; ch < eeprom_ch_count; ch++) {
5501 ch_info->channel = eeprom_ch_index[ch];
5502 ch_info->phymode = (band == 1) ? MODE_IEEE80211B :
5503 MODE_IEEE80211A;
5504
5505 /* permanently store EEPROM's channel regulatory flags
5506 * and max power in channel info database. */
5507 ch_info->eeprom = eeprom_ch_info[ch];
5508
5509 /* Copy the run-time flags so they are there even on
5510 * invalid channels */
5511 ch_info->flags = eeprom_ch_info[ch].flags;
5512
5513 if (!(is_channel_valid(ch_info))) {
5514 IWL_DEBUG_INFO("Ch. %d Flags %x [%sGHz] - "
5515 "No traffic\n",
5516 ch_info->channel,
5517 ch_info->flags,
5518 is_channel_a_band(ch_info) ?
5519 "5.2" : "2.4");
5520 ch_info++;
5521 continue;
5522 }
5523
5524 /* Initialize regulatory-based run-time data */
5525 ch_info->max_power_avg = ch_info->curr_txpow =
5526 eeprom_ch_info[ch].max_power_avg;
5527 ch_info->scan_power = eeprom_ch_info[ch].max_power_avg;
5528 ch_info->min_power = 0;
5529
5530 IWL_DEBUG_INFO("Ch. %d [%sGHz] %s%s%s%s%s%s(0x%02x"
5531 " %ddBm): Ad-Hoc %ssupported\n",
5532 ch_info->channel,
5533 is_channel_a_band(ch_info) ?
5534 "5.2" : "2.4",
5535 CHECK_AND_PRINT(IBSS),
5536 CHECK_AND_PRINT(ACTIVE),
5537 CHECK_AND_PRINT(RADAR),
5538 CHECK_AND_PRINT(WIDE),
5539 CHECK_AND_PRINT(NARROW),
5540 CHECK_AND_PRINT(DFS),
5541 eeprom_ch_info[ch].flags,
5542 eeprom_ch_info[ch].max_power_avg,
5543 ((eeprom_ch_info[ch].
5544 flags & EEPROM_CHANNEL_IBSS)
5545 && !(eeprom_ch_info[ch].
5546 flags & EEPROM_CHANNEL_RADAR))
5547 ? "" : "not ");
5548
5549 /* Set the user_txpower_limit to the highest power
5550 * supported by any channel */
5551 if (eeprom_ch_info[ch].max_power_avg >
5552 priv->user_txpower_limit)
5553 priv->user_txpower_limit =
5554 eeprom_ch_info[ch].max_power_avg;
5555
5556 ch_info++;
5557 }
5558 }
5559
5560 /* Two additional EEPROM bands for 2.4 and 5 GHz FAT channels */
5561 for (band = 6; band <= 7; band++) {
5562 int phymode;
5563 u8 fat_extension_chan;
5564
5565 iwl4965_init_band_reference(priv, band, &eeprom_ch_count,
5566 &eeprom_ch_info, &eeprom_ch_index);
5567
5568 /* EEPROM band 6 is 2.4, band 7 is 5 GHz */
5569 phymode = (band == 6) ? MODE_IEEE80211B : MODE_IEEE80211A;
5570
5571 /* Loop through each band adding each of the channels */
5572 for (ch = 0; ch < eeprom_ch_count; ch++) {
5573
5574 if ((band == 6) &&
5575 ((eeprom_ch_index[ch] == 5) ||
5576 (eeprom_ch_index[ch] == 6) ||
5577 (eeprom_ch_index[ch] == 7)))
5578 fat_extension_chan = HT_IE_EXT_CHANNEL_MAX;
5579 else
5580 fat_extension_chan = HT_IE_EXT_CHANNEL_ABOVE;
5581
5582 /* Set up driver's info for lower half */
5583 iwl4965_set_fat_chan_info(priv, phymode,
5584 eeprom_ch_index[ch],
5585 &(eeprom_ch_info[ch]),
5586 fat_extension_chan);
5587
5588 /* Set up driver's info for upper half */
5589 iwl4965_set_fat_chan_info(priv, phymode,
5590 (eeprom_ch_index[ch] + 4),
5591 &(eeprom_ch_info[ch]),
5592 HT_IE_EXT_CHANNEL_BELOW);
5593 }
5594 }
5595
5596 return 0;
5597 }
5598
5599 /*
5600 * iwl4965_free_channel_map - undo allocations in iwl4965_init_channel_map
5601 */
5602 static void iwl4965_free_channel_map(struct iwl4965_priv *priv)
5603 {
5604 kfree(priv->channel_info);
5605 priv->channel_count = 0;
5606 }
5607
5608 /* For active scan, listen ACTIVE_DWELL_TIME (msec) on each channel after
5609 * sending probe req. This should be set long enough to hear probe responses
5610 * from more than one AP. */
5611 #define IWL_ACTIVE_DWELL_TIME_24 (20) /* all times in msec */
5612 #define IWL_ACTIVE_DWELL_TIME_52 (10)
5613
5614 /* For faster active scanning, scan will move to the next channel if fewer than
5615 * PLCP_QUIET_THRESH packets are heard on this channel within
5616 * ACTIVE_QUIET_TIME after sending probe request. This shortens the dwell
5617 * time if it's a quiet channel (nothing responded to our probe, and there's
5618 * no other traffic).
5619 * Disable "quiet" feature by setting PLCP_QUIET_THRESH to 0. */
5620 #define IWL_PLCP_QUIET_THRESH __constant_cpu_to_le16(1) /* packets */
5621 #define IWL_ACTIVE_QUIET_TIME __constant_cpu_to_le16(5) /* msec */
5622
5623 /* For passive scan, listen PASSIVE_DWELL_TIME (msec) on each channel.
5624 * Must be set longer than active dwell time.
5625 * For the most reliable scan, set > AP beacon interval (typically 100msec). */
5626 #define IWL_PASSIVE_DWELL_TIME_24 (20) /* all times in msec */
5627 #define IWL_PASSIVE_DWELL_TIME_52 (10)
5628 #define IWL_PASSIVE_DWELL_BASE (100)
5629 #define IWL_CHANNEL_TUNE_TIME 5
5630
5631 static inline u16 iwl4965_get_active_dwell_time(struct iwl4965_priv *priv, int phymode)
5632 {
5633 if (phymode == MODE_IEEE80211A)
5634 return IWL_ACTIVE_DWELL_TIME_52;
5635 else
5636 return IWL_ACTIVE_DWELL_TIME_24;
5637 }
5638
5639 static u16 iwl4965_get_passive_dwell_time(struct iwl4965_priv *priv, int phymode)
5640 {
5641 u16 active = iwl4965_get_active_dwell_time(priv, phymode);
5642 u16 passive = (phymode != MODE_IEEE80211A) ?
5643 IWL_PASSIVE_DWELL_BASE + IWL_PASSIVE_DWELL_TIME_24 :
5644 IWL_PASSIVE_DWELL_BASE + IWL_PASSIVE_DWELL_TIME_52;
5645
5646 if (iwl4965_is_associated(priv)) {
5647 /* If we're associated, we clamp the maximum passive
5648 * dwell time to be 98% of the beacon interval (minus
5649 * 2 * channel tune time) */
5650 passive = priv->beacon_int;
5651 if ((passive > IWL_PASSIVE_DWELL_BASE) || !passive)
5652 passive = IWL_PASSIVE_DWELL_BASE;
5653 passive = (passive * 98) / 100 - IWL_CHANNEL_TUNE_TIME * 2;
5654 }
5655
5656 if (passive <= active)
5657 passive = active + 1;
5658
5659 return passive;
5660 }
5661
5662 static int iwl4965_get_channels_for_scan(struct iwl4965_priv *priv, int phymode,
5663 u8 is_active, u8 direct_mask,
5664 struct iwl4965_scan_channel *scan_ch)
5665 {
5666 const struct ieee80211_channel *channels = NULL;
5667 const struct ieee80211_hw_mode *hw_mode;
5668 const struct iwl4965_channel_info *ch_info;
5669 u16 passive_dwell = 0;
5670 u16 active_dwell = 0;
5671 int added, i;
5672
5673 hw_mode = iwl4965_get_hw_mode(priv, phymode);
5674 if (!hw_mode)
5675 return 0;
5676
5677 channels = hw_mode->channels;
5678
5679 active_dwell = iwl4965_get_active_dwell_time(priv, phymode);
5680 passive_dwell = iwl4965_get_passive_dwell_time(priv, phymode);
5681
5682 for (i = 0, added = 0; i < hw_mode->num_channels; i++) {
5683 if (channels[i].chan ==
5684 le16_to_cpu(priv->active_rxon.channel)) {
5685 if (iwl4965_is_associated(priv)) {
5686 IWL_DEBUG_SCAN
5687 ("Skipping current channel %d\n",
5688 le16_to_cpu(priv->active_rxon.channel));
5689 continue;
5690 }
5691 } else if (priv->only_active_channel)
5692 continue;
5693
5694 scan_ch->channel = channels[i].chan;
5695
5696 ch_info = iwl4965_get_channel_info(priv, phymode,
5697 scan_ch->channel);
5698 if (!is_channel_valid(ch_info)) {
5699 IWL_DEBUG_SCAN("Channel %d is INVALID for this SKU.\n",
5700 scan_ch->channel);
5701 continue;
5702 }
5703
5704 if (!is_active || is_channel_passive(ch_info) ||
5705 !(channels[i].flag & IEEE80211_CHAN_W_ACTIVE_SCAN))
5706 scan_ch->type = 0; /* passive */
5707 else
5708 scan_ch->type = 1; /* active */
5709
5710 if (scan_ch->type & 1)
5711 scan_ch->type |= (direct_mask << 1);
5712
5713 if (is_channel_narrow(ch_info))
5714 scan_ch->type |= (1 << 7);
5715
5716 scan_ch->active_dwell = cpu_to_le16(active_dwell);
5717 scan_ch->passive_dwell = cpu_to_le16(passive_dwell);
5718
5719 /* Set txpower levels to defaults */
5720 scan_ch->tpc.dsp_atten = 110;
5721 /* scan_pwr_info->tpc.dsp_atten; */
5722
5723 /*scan_pwr_info->tpc.tx_gain; */
5724 if (phymode == MODE_IEEE80211A)
5725 scan_ch->tpc.tx_gain = ((1 << 5) | (3 << 3)) | 3;
5726 else {
5727 scan_ch->tpc.tx_gain = ((1 << 5) | (5 << 3));
5728 /* NOTE: if we were doing 6Mb OFDM for scans we'd use
5729 * power level:
5730 * scan_ch->tpc.tx_gain = ((1 << 5) | (2 << 3)) | 3;
5731 */
5732 }
5733
5734 IWL_DEBUG_SCAN("Scanning %d [%s %d]\n",
5735 scan_ch->channel,
5736 (scan_ch->type & 1) ? "ACTIVE" : "PASSIVE",
5737 (scan_ch->type & 1) ?
5738 active_dwell : passive_dwell);
5739
5740 scan_ch++;
5741 added++;
5742 }
5743
5744 IWL_DEBUG_SCAN("total channels to scan %d \n", added);
5745 return added;
5746 }
5747
5748 static void iwl4965_reset_channel_flag(struct iwl4965_priv *priv)
5749 {
5750 int i, j;
5751 for (i = 0; i < 3; i++) {
5752 struct ieee80211_hw_mode *hw_mode = (void *)&priv->modes[i];
5753 for (j = 0; j < hw_mode->num_channels; j++)
5754 hw_mode->channels[j].flag = hw_mode->channels[j].val;
5755 }
5756 }
5757
5758 static void iwl4965_init_hw_rates(struct iwl4965_priv *priv,
5759 struct ieee80211_rate *rates)
5760 {
5761 int i;
5762
5763 for (i = 0; i < IWL_RATE_COUNT; i++) {
5764 rates[i].rate = iwl4965_rates[i].ieee * 5;
5765 rates[i].val = i; /* Rate scaling will work on indexes */
5766 rates[i].val2 = i;
5767 rates[i].flags = IEEE80211_RATE_SUPPORTED;
5768 /* Only OFDM have the bits-per-symbol set */
5769 if ((i <= IWL_LAST_OFDM_RATE) && (i >= IWL_FIRST_OFDM_RATE))
5770 rates[i].flags |= IEEE80211_RATE_OFDM;
5771 else {
5772 /*
5773 * If CCK 1M then set rate flag to CCK else CCK_2
5774 * which is CCK | PREAMBLE2
5775 */
5776 rates[i].flags |= (iwl4965_rates[i].plcp == 10) ?
5777 IEEE80211_RATE_CCK : IEEE80211_RATE_CCK_2;
5778 }
5779
5780 /* Set up which ones are basic rates... */
5781 if (IWL_BASIC_RATES_MASK & (1 << i))
5782 rates[i].flags |= IEEE80211_RATE_BASIC;
5783 }
5784 }
5785
5786 /**
5787 * iwl4965_init_geos - Initialize mac80211's geo/channel info based from eeprom
5788 */
5789 static int iwl4965_init_geos(struct iwl4965_priv *priv)
5790 {
5791 struct iwl4965_channel_info *ch;
5792 struct ieee80211_hw_mode *modes;
5793 struct ieee80211_channel *channels;
5794 struct ieee80211_channel *geo_ch;
5795 struct ieee80211_rate *rates;
5796 int i = 0;
5797 enum {
5798 A = 0,
5799 B = 1,
5800 G = 2,
5801 };
5802 int mode_count = 3;
5803
5804 if (priv->modes) {
5805 IWL_DEBUG_INFO("Geography modes already initialized.\n");
5806 set_bit(STATUS_GEO_CONFIGURED, &priv->status);
5807 return 0;
5808 }
5809
5810 modes = kzalloc(sizeof(struct ieee80211_hw_mode) * mode_count,
5811 GFP_KERNEL);
5812 if (!modes)
5813 return -ENOMEM;
5814
5815 channels = kzalloc(sizeof(struct ieee80211_channel) *
5816 priv->channel_count, GFP_KERNEL);
5817 if (!channels) {
5818 kfree(modes);
5819 return -ENOMEM;
5820 }
5821
5822 rates = kzalloc((sizeof(struct ieee80211_rate) * (IWL_MAX_RATES + 1)),
5823 GFP_KERNEL);
5824 if (!rates) {
5825 kfree(modes);
5826 kfree(channels);
5827 return -ENOMEM;
5828 }
5829
5830 /* 0 = 802.11a
5831 * 1 = 802.11b
5832 * 2 = 802.11g
5833 */
5834
5835 /* 5.2GHz channels start after the 2.4GHz channels */
5836 modes[A].mode = MODE_IEEE80211A;
5837 modes[A].channels = &channels[ARRAY_SIZE(iwl4965_eeprom_band_1)];
5838 modes[A].rates = rates;
5839 modes[A].num_rates = 8; /* just OFDM */
5840 modes[A].rates = &rates[4];
5841 modes[A].num_channels = 0;
5842 #ifdef CONFIG_IWL4965_HT
5843 iwl4965_init_ht_hw_capab(&modes[A].ht_info, MODE_IEEE80211A);
5844 #endif
5845
5846 modes[B].mode = MODE_IEEE80211B;
5847 modes[B].channels = channels;
5848 modes[B].rates = rates;
5849 modes[B].num_rates = 4; /* just CCK */
5850 modes[B].num_channels = 0;
5851
5852 modes[G].mode = MODE_IEEE80211G;
5853 modes[G].channels = channels;
5854 modes[G].rates = rates;
5855 modes[G].num_rates = 12; /* OFDM & CCK */
5856 modes[G].num_channels = 0;
5857 #ifdef CONFIG_IWL4965_HT
5858 iwl4965_init_ht_hw_capab(&modes[G].ht_info, MODE_IEEE80211G);
5859 #endif
5860
5861 priv->ieee_channels = channels;
5862 priv->ieee_rates = rates;
5863
5864 iwl4965_init_hw_rates(priv, rates);
5865
5866 for (i = 0, geo_ch = channels; i < priv->channel_count; i++) {
5867 ch = &priv->channel_info[i];
5868
5869 if (!is_channel_valid(ch)) {
5870 IWL_DEBUG_INFO("Channel %d [%sGHz] is restricted -- "
5871 "skipping.\n",
5872 ch->channel, is_channel_a_band(ch) ?
5873 "5.2" : "2.4");
5874 continue;
5875 }
5876
5877 if (is_channel_a_band(ch)) {
5878 geo_ch = &modes[A].channels[modes[A].num_channels++];
5879 } else {
5880 geo_ch = &modes[B].channels[modes[B].num_channels++];
5881 modes[G].num_channels++;
5882 }
5883
5884 geo_ch->freq = ieee80211chan2mhz(ch->channel);
5885 geo_ch->chan = ch->channel;
5886 geo_ch->power_level = ch->max_power_avg;
5887 geo_ch->antenna_max = 0xff;
5888
5889 if (is_channel_valid(ch)) {
5890 geo_ch->flag = IEEE80211_CHAN_W_SCAN;
5891 if (ch->flags & EEPROM_CHANNEL_IBSS)
5892 geo_ch->flag |= IEEE80211_CHAN_W_IBSS;
5893
5894 if (ch->flags & EEPROM_CHANNEL_ACTIVE)
5895 geo_ch->flag |= IEEE80211_CHAN_W_ACTIVE_SCAN;
5896
5897 if (ch->flags & EEPROM_CHANNEL_RADAR)
5898 geo_ch->flag |= IEEE80211_CHAN_W_RADAR_DETECT;
5899
5900 if (ch->max_power_avg > priv->max_channel_txpower_limit)
5901 priv->max_channel_txpower_limit =
5902 ch->max_power_avg;
5903 }
5904
5905 geo_ch->val = geo_ch->flag;
5906 }
5907
5908 if ((modes[A].num_channels == 0) && priv->is_abg) {
5909 printk(KERN_INFO DRV_NAME
5910 ": Incorrectly detected BG card as ABG. Please send "
5911 "your PCI ID 0x%04X:0x%04X to maintainer.\n",
5912 priv->pci_dev->device, priv->pci_dev->subsystem_device);
5913 priv->is_abg = 0;
5914 }
5915
5916 printk(KERN_INFO DRV_NAME
5917 ": Tunable channels: %d 802.11bg, %d 802.11a channels\n",
5918 modes[G].num_channels, modes[A].num_channels);
5919
5920 /*
5921 * NOTE: We register these in preference of order -- the
5922 * stack doesn't currently (as of 7.0.6 / Apr 24 '07) pick
5923 * a phymode based on rates or AP capabilities but seems to
5924 * configure it purely on if the channel being configured
5925 * is supported by a mode -- and the first match is taken
5926 */
5927
5928 if (modes[G].num_channels)
5929 ieee80211_register_hwmode(priv->hw, &modes[G]);
5930 if (modes[B].num_channels)
5931 ieee80211_register_hwmode(priv->hw, &modes[B]);
5932 if (modes[A].num_channels)
5933 ieee80211_register_hwmode(priv->hw, &modes[A]);
5934
5935 priv->modes = modes;
5936 set_bit(STATUS_GEO_CONFIGURED, &priv->status);
5937
5938 return 0;
5939 }
5940
5941 /*
5942 * iwl4965_free_geos - undo allocations in iwl4965_init_geos
5943 */
5944 static void iwl4965_free_geos(struct iwl4965_priv *priv)
5945 {
5946 kfree(priv->modes);
5947 kfree(priv->ieee_channels);
5948 kfree(priv->ieee_rates);
5949 clear_bit(STATUS_GEO_CONFIGURED, &priv->status);
5950 }
5951
5952 /******************************************************************************
5953 *
5954 * uCode download functions
5955 *
5956 ******************************************************************************/
5957
5958 static void iwl4965_dealloc_ucode_pci(struct iwl4965_priv *priv)
5959 {
5960 iwl_free_fw_desc(priv->pci_dev, &priv->ucode_code);
5961 iwl_free_fw_desc(priv->pci_dev, &priv->ucode_data);
5962 iwl_free_fw_desc(priv->pci_dev, &priv->ucode_data_backup);
5963 iwl_free_fw_desc(priv->pci_dev, &priv->ucode_init);
5964 iwl_free_fw_desc(priv->pci_dev, &priv->ucode_init_data);
5965 iwl_free_fw_desc(priv->pci_dev, &priv->ucode_boot);
5966 }
5967
5968 /**
5969 * iwl4965_verify_inst_full - verify runtime uCode image in card vs. host,
5970 * looking at all data.
5971 */
5972 static int iwl4965_verify_inst_full(struct iwl4965_priv *priv, __le32 *image,
5973 u32 len)
5974 {
5975 u32 val;
5976 u32 save_len = len;
5977 int rc = 0;
5978 u32 errcnt;
5979
5980 IWL_DEBUG_INFO("ucode inst image size is %u\n", len);
5981
5982 rc = iwl4965_grab_nic_access(priv);
5983 if (rc)
5984 return rc;
5985
5986 iwl4965_write_direct32(priv, HBUS_TARG_MEM_RADDR, RTC_INST_LOWER_BOUND);
5987
5988 errcnt = 0;
5989 for (; len > 0; len -= sizeof(u32), image++) {
5990 /* read data comes through single port, auto-incr addr */
5991 /* NOTE: Use the debugless read so we don't flood kernel log
5992 * if IWL_DL_IO is set */
5993 val = _iwl4965_read_direct32(priv, HBUS_TARG_MEM_RDAT);
5994 if (val != le32_to_cpu(*image)) {
5995 IWL_ERROR("uCode INST section is invalid at "
5996 "offset 0x%x, is 0x%x, s/b 0x%x\n",
5997 save_len - len, val, le32_to_cpu(*image));
5998 rc = -EIO;
5999 errcnt++;
6000 if (errcnt >= 20)
6001 break;
6002 }
6003 }
6004
6005 iwl4965_release_nic_access(priv);
6006
6007 if (!errcnt)
6008 IWL_DEBUG_INFO
6009 ("ucode image in INSTRUCTION memory is good\n");
6010
6011 return rc;
6012 }
6013
6014
6015 /**
6016 * iwl4965_verify_inst_sparse - verify runtime uCode image in card vs. host,
6017 * using sample data 100 bytes apart. If these sample points are good,
6018 * it's a pretty good bet that everything between them is good, too.
6019 */
6020 static int iwl4965_verify_inst_sparse(struct iwl4965_priv *priv, __le32 *image, u32 len)
6021 {
6022 u32 val;
6023 int rc = 0;
6024 u32 errcnt = 0;
6025 u32 i;
6026
6027 IWL_DEBUG_INFO("ucode inst image size is %u\n", len);
6028
6029 rc = iwl4965_grab_nic_access(priv);
6030 if (rc)
6031 return rc;
6032
6033 for (i = 0; i < len; i += 100, image += 100/sizeof(u32)) {
6034 /* read data comes through single port, auto-incr addr */
6035 /* NOTE: Use the debugless read so we don't flood kernel log
6036 * if IWL_DL_IO is set */
6037 iwl4965_write_direct32(priv, HBUS_TARG_MEM_RADDR,
6038 i + RTC_INST_LOWER_BOUND);
6039 val = _iwl4965_read_direct32(priv, HBUS_TARG_MEM_RDAT);
6040 if (val != le32_to_cpu(*image)) {
6041 #if 0 /* Enable this if you want to see details */
6042 IWL_ERROR("uCode INST section is invalid at "
6043 "offset 0x%x, is 0x%x, s/b 0x%x\n",
6044 i, val, *image);
6045 #endif
6046 rc = -EIO;
6047 errcnt++;
6048 if (errcnt >= 3)
6049 break;
6050 }
6051 }
6052
6053 iwl4965_release_nic_access(priv);
6054
6055 return rc;
6056 }
6057
6058
6059 /**
6060 * iwl4965_verify_ucode - determine which instruction image is in SRAM,
6061 * and verify its contents
6062 */
6063 static int iwl4965_verify_ucode(struct iwl4965_priv *priv)
6064 {
6065 __le32 *image;
6066 u32 len;
6067 int rc = 0;
6068
6069 /* Try bootstrap */
6070 image = (__le32 *)priv->ucode_boot.v_addr;
6071 len = priv->ucode_boot.len;
6072 rc = iwl4965_verify_inst_sparse(priv, image, len);
6073 if (rc == 0) {
6074 IWL_DEBUG_INFO("Bootstrap uCode is good in inst SRAM\n");
6075 return 0;
6076 }
6077
6078 /* Try initialize */
6079 image = (__le32 *)priv->ucode_init.v_addr;
6080 len = priv->ucode_init.len;
6081 rc = iwl4965_verify_inst_sparse(priv, image, len);
6082 if (rc == 0) {
6083 IWL_DEBUG_INFO("Initialize uCode is good in inst SRAM\n");
6084 return 0;
6085 }
6086
6087 /* Try runtime/protocol */
6088 image = (__le32 *)priv->ucode_code.v_addr;
6089 len = priv->ucode_code.len;
6090 rc = iwl4965_verify_inst_sparse(priv, image, len);
6091 if (rc == 0) {
6092 IWL_DEBUG_INFO("Runtime uCode is good in inst SRAM\n");
6093 return 0;
6094 }
6095
6096 IWL_ERROR("NO VALID UCODE IMAGE IN INSTRUCTION SRAM!!\n");
6097
6098 /* Since nothing seems to match, show first several data entries in
6099 * instruction SRAM, so maybe visual inspection will give a clue.
6100 * Selection of bootstrap image (vs. other images) is arbitrary. */
6101 image = (__le32 *)priv->ucode_boot.v_addr;
6102 len = priv->ucode_boot.len;
6103 rc = iwl4965_verify_inst_full(priv, image, len);
6104
6105 return rc;
6106 }
6107
6108
6109 /* check contents of special bootstrap uCode SRAM */
6110 static int iwl4965_verify_bsm(struct iwl4965_priv *priv)
6111 {
6112 __le32 *image = priv->ucode_boot.v_addr;
6113 u32 len = priv->ucode_boot.len;
6114 u32 reg;
6115 u32 val;
6116
6117 IWL_DEBUG_INFO("Begin verify bsm\n");
6118
6119 /* verify BSM SRAM contents */
6120 val = iwl4965_read_prph(priv, BSM_WR_DWCOUNT_REG);
6121 for (reg = BSM_SRAM_LOWER_BOUND;
6122 reg < BSM_SRAM_LOWER_BOUND + len;
6123 reg += sizeof(u32), image ++) {
6124 val = iwl4965_read_prph(priv, reg);
6125 if (val != le32_to_cpu(*image)) {
6126 IWL_ERROR("BSM uCode verification failed at "
6127 "addr 0x%08X+%u (of %u), is 0x%x, s/b 0x%x\n",
6128 BSM_SRAM_LOWER_BOUND,
6129 reg - BSM_SRAM_LOWER_BOUND, len,
6130 val, le32_to_cpu(*image));
6131 return -EIO;
6132 }
6133 }
6134
6135 IWL_DEBUG_INFO("BSM bootstrap uCode image OK\n");
6136
6137 return 0;
6138 }
6139
6140 /**
6141 * iwl4965_load_bsm - Load bootstrap instructions
6142 *
6143 * BSM operation:
6144 *
6145 * The Bootstrap State Machine (BSM) stores a short bootstrap uCode program
6146 * in special SRAM that does not power down during RFKILL. When powering back
6147 * up after power-saving sleeps (or during initial uCode load), the BSM loads
6148 * the bootstrap program into the on-board processor, and starts it.
6149 *
6150 * The bootstrap program loads (via DMA) instructions and data for a new
6151 * program from host DRAM locations indicated by the host driver in the
6152 * BSM_DRAM_* registers. Once the new program is loaded, it starts
6153 * automatically.
6154 *
6155 * When initializing the NIC, the host driver points the BSM to the
6156 * "initialize" uCode image. This uCode sets up some internal data, then
6157 * notifies host via "initialize alive" that it is complete.
6158 *
6159 * The host then replaces the BSM_DRAM_* pointer values to point to the
6160 * normal runtime uCode instructions and a backup uCode data cache buffer
6161 * (filled initially with starting data values for the on-board processor),
6162 * then triggers the "initialize" uCode to load and launch the runtime uCode,
6163 * which begins normal operation.
6164 *
6165 * When doing a power-save shutdown, runtime uCode saves data SRAM into
6166 * the backup data cache in DRAM before SRAM is powered down.
6167 *
6168 * When powering back up, the BSM loads the bootstrap program. This reloads
6169 * the runtime uCode instructions and the backup data cache into SRAM,
6170 * and re-launches the runtime uCode from where it left off.
6171 */
6172 static int iwl4965_load_bsm(struct iwl4965_priv *priv)
6173 {
6174 __le32 *image = priv->ucode_boot.v_addr;
6175 u32 len = priv->ucode_boot.len;
6176 dma_addr_t pinst;
6177 dma_addr_t pdata;
6178 u32 inst_len;
6179 u32 data_len;
6180 int rc;
6181 int i;
6182 u32 done;
6183 u32 reg_offset;
6184
6185 IWL_DEBUG_INFO("Begin load bsm\n");
6186
6187 /* make sure bootstrap program is no larger than BSM's SRAM size */
6188 if (len > IWL_MAX_BSM_SIZE)
6189 return -EINVAL;
6190
6191 /* Tell bootstrap uCode where to find the "Initialize" uCode
6192 * in host DRAM ... host DRAM physical address bits 35:4 for 4965.
6193 * NOTE: iwl4965_initialize_alive_start() will replace these values,
6194 * after the "initialize" uCode has run, to point to
6195 * runtime/protocol instructions and backup data cache. */
6196 pinst = priv->ucode_init.p_addr >> 4;
6197 pdata = priv->ucode_init_data.p_addr >> 4;
6198 inst_len = priv->ucode_init.len;
6199 data_len = priv->ucode_init_data.len;
6200
6201 rc = iwl4965_grab_nic_access(priv);
6202 if (rc)
6203 return rc;
6204
6205 iwl4965_write_prph(priv, BSM_DRAM_INST_PTR_REG, pinst);
6206 iwl4965_write_prph(priv, BSM_DRAM_DATA_PTR_REG, pdata);
6207 iwl4965_write_prph(priv, BSM_DRAM_INST_BYTECOUNT_REG, inst_len);
6208 iwl4965_write_prph(priv, BSM_DRAM_DATA_BYTECOUNT_REG, data_len);
6209
6210 /* Fill BSM memory with bootstrap instructions */
6211 for (reg_offset = BSM_SRAM_LOWER_BOUND;
6212 reg_offset < BSM_SRAM_LOWER_BOUND + len;
6213 reg_offset += sizeof(u32), image++)
6214 _iwl4965_write_prph(priv, reg_offset,
6215 le32_to_cpu(*image));
6216
6217 rc = iwl4965_verify_bsm(priv);
6218 if (rc) {
6219 iwl4965_release_nic_access(priv);
6220 return rc;
6221 }
6222
6223 /* Tell BSM to copy from BSM SRAM into instruction SRAM, when asked */
6224 iwl4965_write_prph(priv, BSM_WR_MEM_SRC_REG, 0x0);
6225 iwl4965_write_prph(priv, BSM_WR_MEM_DST_REG,
6226 RTC_INST_LOWER_BOUND);
6227 iwl4965_write_prph(priv, BSM_WR_DWCOUNT_REG, len / sizeof(u32));
6228
6229 /* Load bootstrap code into instruction SRAM now,
6230 * to prepare to load "initialize" uCode */
6231 iwl4965_write_prph(priv, BSM_WR_CTRL_REG,
6232 BSM_WR_CTRL_REG_BIT_START);
6233
6234 /* Wait for load of bootstrap uCode to finish */
6235 for (i = 0; i < 100; i++) {
6236 done = iwl4965_read_prph(priv, BSM_WR_CTRL_REG);
6237 if (!(done & BSM_WR_CTRL_REG_BIT_START))
6238 break;
6239 udelay(10);
6240 }
6241 if (i < 100)
6242 IWL_DEBUG_INFO("BSM write complete, poll %d iterations\n", i);
6243 else {
6244 IWL_ERROR("BSM write did not complete!\n");
6245 return -EIO;
6246 }
6247
6248 /* Enable future boot loads whenever power management unit triggers it
6249 * (e.g. when powering back up after power-save shutdown) */
6250 iwl4965_write_prph(priv, BSM_WR_CTRL_REG,
6251 BSM_WR_CTRL_REG_BIT_START_EN);
6252
6253 iwl4965_release_nic_access(priv);
6254
6255 return 0;
6256 }
6257
6258 static void iwl4965_nic_start(struct iwl4965_priv *priv)
6259 {
6260 /* Remove all resets to allow NIC to operate */
6261 iwl4965_write32(priv, CSR_RESET, 0);
6262 }
6263
6264
6265 /**
6266 * iwl4965_read_ucode - Read uCode images from disk file.
6267 *
6268 * Copy into buffers for card to fetch via bus-mastering
6269 */
6270 static int iwl4965_read_ucode(struct iwl4965_priv *priv)
6271 {
6272 struct iwl4965_ucode *ucode;
6273 int ret;
6274 const struct firmware *ucode_raw;
6275 const char *name = "iwlwifi-4965" IWL4965_UCODE_API ".ucode";
6276 u8 *src;
6277 size_t len;
6278 u32 ver, inst_size, data_size, init_size, init_data_size, boot_size;
6279
6280 /* Ask kernel firmware_class module to get the boot firmware off disk.
6281 * request_firmware() is synchronous, file is in memory on return. */
6282 ret = request_firmware(&ucode_raw, name, &priv->pci_dev->dev);
6283 if (ret < 0) {
6284 IWL_ERROR("%s firmware file req failed: Reason %d\n",
6285 name, ret);
6286 goto error;
6287 }
6288
6289 IWL_DEBUG_INFO("Got firmware '%s' file (%zd bytes) from disk\n",
6290 name, ucode_raw->size);
6291
6292 /* Make sure that we got at least our header! */
6293 if (ucode_raw->size < sizeof(*ucode)) {
6294 IWL_ERROR("File size way too small!\n");
6295 ret = -EINVAL;
6296 goto err_release;
6297 }
6298
6299 /* Data from ucode file: header followed by uCode images */
6300 ucode = (void *)ucode_raw->data;
6301
6302 ver = le32_to_cpu(ucode->ver);
6303 inst_size = le32_to_cpu(ucode->inst_size);
6304 data_size = le32_to_cpu(ucode->data_size);
6305 init_size = le32_to_cpu(ucode->init_size);
6306 init_data_size = le32_to_cpu(ucode->init_data_size);
6307 boot_size = le32_to_cpu(ucode->boot_size);
6308
6309 IWL_DEBUG_INFO("f/w package hdr ucode version = 0x%x\n", ver);
6310 IWL_DEBUG_INFO("f/w package hdr runtime inst size = %u\n",
6311 inst_size);
6312 IWL_DEBUG_INFO("f/w package hdr runtime data size = %u\n",
6313 data_size);
6314 IWL_DEBUG_INFO("f/w package hdr init inst size = %u\n",
6315 init_size);
6316 IWL_DEBUG_INFO("f/w package hdr init data size = %u\n",
6317 init_data_size);
6318 IWL_DEBUG_INFO("f/w package hdr boot inst size = %u\n",
6319 boot_size);
6320
6321 /* Verify size of file vs. image size info in file's header */
6322 if (ucode_raw->size < sizeof(*ucode) +
6323 inst_size + data_size + init_size +
6324 init_data_size + boot_size) {
6325
6326 IWL_DEBUG_INFO("uCode file size %d too small\n",
6327 (int)ucode_raw->size);
6328 ret = -EINVAL;
6329 goto err_release;
6330 }
6331
6332 /* Verify that uCode images will fit in card's SRAM */
6333 if (inst_size > IWL_MAX_INST_SIZE) {
6334 IWL_DEBUG_INFO("uCode instr len %d too large to fit in\n",
6335 inst_size);
6336 ret = -EINVAL;
6337 goto err_release;
6338 }
6339
6340 if (data_size > IWL_MAX_DATA_SIZE) {
6341 IWL_DEBUG_INFO("uCode data len %d too large to fit in\n",
6342 data_size);
6343 ret = -EINVAL;
6344 goto err_release;
6345 }
6346 if (init_size > IWL_MAX_INST_SIZE) {
6347 IWL_DEBUG_INFO
6348 ("uCode init instr len %d too large to fit in\n",
6349 init_size);
6350 ret = -EINVAL;
6351 goto err_release;
6352 }
6353 if (init_data_size > IWL_MAX_DATA_SIZE) {
6354 IWL_DEBUG_INFO
6355 ("uCode init data len %d too large to fit in\n",
6356 init_data_size);
6357 ret = -EINVAL;
6358 goto err_release;
6359 }
6360 if (boot_size > IWL_MAX_BSM_SIZE) {
6361 IWL_DEBUG_INFO
6362 ("uCode boot instr len %d too large to fit in\n",
6363 boot_size);
6364 ret = -EINVAL;
6365 goto err_release;
6366 }
6367
6368 /* Allocate ucode buffers for card's bus-master loading ... */
6369
6370 /* Runtime instructions and 2 copies of data:
6371 * 1) unmodified from disk
6372 * 2) backup cache for save/restore during power-downs */
6373 priv->ucode_code.len = inst_size;
6374 iwl_alloc_fw_desc(priv->pci_dev, &priv->ucode_code);
6375
6376 priv->ucode_data.len = data_size;
6377 iwl_alloc_fw_desc(priv->pci_dev, &priv->ucode_data);
6378
6379 priv->ucode_data_backup.len = data_size;
6380 iwl_alloc_fw_desc(priv->pci_dev, &priv->ucode_data_backup);
6381
6382 /* Initialization instructions and data */
6383 if (init_size && init_data_size) {
6384 priv->ucode_init.len = init_size;
6385 iwl_alloc_fw_desc(priv->pci_dev, &priv->ucode_init);
6386
6387 priv->ucode_init_data.len = init_data_size;
6388 iwl_alloc_fw_desc(priv->pci_dev, &priv->ucode_init_data);
6389
6390 if (!priv->ucode_init.v_addr || !priv->ucode_init_data.v_addr)
6391 goto err_pci_alloc;
6392 }
6393
6394 /* Bootstrap (instructions only, no data) */
6395 if (boot_size) {
6396 priv->ucode_boot.len = boot_size;
6397 iwl_alloc_fw_desc(priv->pci_dev, &priv->ucode_boot);
6398
6399 if (!priv->ucode_boot.v_addr)
6400 goto err_pci_alloc;
6401 }
6402
6403 /* Copy images into buffers for card's bus-master reads ... */
6404
6405 /* Runtime instructions (first block of data in file) */
6406 src = &ucode->data[0];
6407 len = priv->ucode_code.len;
6408 IWL_DEBUG_INFO("Copying (but not loading) uCode instr len %Zd\n", len);
6409 memcpy(priv->ucode_code.v_addr, src, len);
6410 IWL_DEBUG_INFO("uCode instr buf vaddr = 0x%p, paddr = 0x%08x\n",
6411 priv->ucode_code.v_addr, (u32)priv->ucode_code.p_addr);
6412
6413 /* Runtime data (2nd block)
6414 * NOTE: Copy into backup buffer will be done in iwl4965_up() */
6415 src = &ucode->data[inst_size];
6416 len = priv->ucode_data.len;
6417 IWL_DEBUG_INFO("Copying (but not loading) uCode data len %Zd\n", len);
6418 memcpy(priv->ucode_data.v_addr, src, len);
6419 memcpy(priv->ucode_data_backup.v_addr, src, len);
6420
6421 /* Initialization instructions (3rd block) */
6422 if (init_size) {
6423 src = &ucode->data[inst_size + data_size];
6424 len = priv->ucode_init.len;
6425 IWL_DEBUG_INFO("Copying (but not loading) init instr len %Zd\n",
6426 len);
6427 memcpy(priv->ucode_init.v_addr, src, len);
6428 }
6429
6430 /* Initialization data (4th block) */
6431 if (init_data_size) {
6432 src = &ucode->data[inst_size + data_size + init_size];
6433 len = priv->ucode_init_data.len;
6434 IWL_DEBUG_INFO("Copying (but not loading) init data len %Zd\n",
6435 len);
6436 memcpy(priv->ucode_init_data.v_addr, src, len);
6437 }
6438
6439 /* Bootstrap instructions (5th block) */
6440 src = &ucode->data[inst_size + data_size + init_size + init_data_size];
6441 len = priv->ucode_boot.len;
6442 IWL_DEBUG_INFO("Copying (but not loading) boot instr len %Zd\n", len);
6443 memcpy(priv->ucode_boot.v_addr, src, len);
6444
6445 /* We have our copies now, allow OS release its copies */
6446 release_firmware(ucode_raw);
6447 return 0;
6448
6449 err_pci_alloc:
6450 IWL_ERROR("failed to allocate pci memory\n");
6451 ret = -ENOMEM;
6452 iwl4965_dealloc_ucode_pci(priv);
6453
6454 err_release:
6455 release_firmware(ucode_raw);
6456
6457 error:
6458 return ret;
6459 }
6460
6461
6462 /**
6463 * iwl4965_set_ucode_ptrs - Set uCode address location
6464 *
6465 * Tell initialization uCode where to find runtime uCode.
6466 *
6467 * BSM registers initially contain pointers to initialization uCode.
6468 * We need to replace them to load runtime uCode inst and data,
6469 * and to save runtime data when powering down.
6470 */
6471 static int iwl4965_set_ucode_ptrs(struct iwl4965_priv *priv)
6472 {
6473 dma_addr_t pinst;
6474 dma_addr_t pdata;
6475 int rc = 0;
6476 unsigned long flags;
6477
6478 /* bits 35:4 for 4965 */
6479 pinst = priv->ucode_code.p_addr >> 4;
6480 pdata = priv->ucode_data_backup.p_addr >> 4;
6481
6482 spin_lock_irqsave(&priv->lock, flags);
6483 rc = iwl4965_grab_nic_access(priv);
6484 if (rc) {
6485 spin_unlock_irqrestore(&priv->lock, flags);
6486 return rc;
6487 }
6488
6489 /* Tell bootstrap uCode where to find image to load */
6490 iwl4965_write_prph(priv, BSM_DRAM_INST_PTR_REG, pinst);
6491 iwl4965_write_prph(priv, BSM_DRAM_DATA_PTR_REG, pdata);
6492 iwl4965_write_prph(priv, BSM_DRAM_DATA_BYTECOUNT_REG,
6493 priv->ucode_data.len);
6494
6495 /* Inst bytecount must be last to set up, bit 31 signals uCode
6496 * that all new ptr/size info is in place */
6497 iwl4965_write_prph(priv, BSM_DRAM_INST_BYTECOUNT_REG,
6498 priv->ucode_code.len | BSM_DRAM_INST_LOAD);
6499
6500 iwl4965_release_nic_access(priv);
6501
6502 spin_unlock_irqrestore(&priv->lock, flags);
6503
6504 IWL_DEBUG_INFO("Runtime uCode pointers are set.\n");
6505
6506 return rc;
6507 }
6508
6509 /**
6510 * iwl4965_init_alive_start - Called after REPLY_ALIVE notification received
6511 *
6512 * Called after REPLY_ALIVE notification received from "initialize" uCode.
6513 *
6514 * The 4965 "initialize" ALIVE reply contains calibration data for:
6515 * Voltage, temperature, and MIMO tx gain correction, now stored in priv
6516 * (3945 does not contain this data).
6517 *
6518 * Tell "initialize" uCode to go ahead and load the runtime uCode.
6519 */
6520 static void iwl4965_init_alive_start(struct iwl4965_priv *priv)
6521 {
6522 /* Check alive response for "valid" sign from uCode */
6523 if (priv->card_alive_init.is_valid != UCODE_VALID_OK) {
6524 /* We had an error bringing up the hardware, so take it
6525 * all the way back down so we can try again */
6526 IWL_DEBUG_INFO("Initialize Alive failed.\n");
6527 goto restart;
6528 }
6529
6530 /* Bootstrap uCode has loaded initialize uCode ... verify inst image.
6531 * This is a paranoid check, because we would not have gotten the
6532 * "initialize" alive if code weren't properly loaded. */
6533 if (iwl4965_verify_ucode(priv)) {
6534 /* Runtime instruction load was bad;
6535 * take it all the way back down so we can try again */
6536 IWL_DEBUG_INFO("Bad \"initialize\" uCode load.\n");
6537 goto restart;
6538 }
6539
6540 /* Calculate temperature */
6541 priv->temperature = iwl4965_get_temperature(priv);
6542
6543 /* Send pointers to protocol/runtime uCode image ... init code will
6544 * load and launch runtime uCode, which will send us another "Alive"
6545 * notification. */
6546 IWL_DEBUG_INFO("Initialization Alive received.\n");
6547 if (iwl4965_set_ucode_ptrs(priv)) {
6548 /* Runtime instruction load won't happen;
6549 * take it all the way back down so we can try again */
6550 IWL_DEBUG_INFO("Couldn't set up uCode pointers.\n");
6551 goto restart;
6552 }
6553 return;
6554
6555 restart:
6556 queue_work(priv->workqueue, &priv->restart);
6557 }
6558
6559
6560 /**
6561 * iwl4965_alive_start - called after REPLY_ALIVE notification received
6562 * from protocol/runtime uCode (initialization uCode's
6563 * Alive gets handled by iwl4965_init_alive_start()).
6564 */
6565 static void iwl4965_alive_start(struct iwl4965_priv *priv)
6566 {
6567 int rc = 0;
6568
6569 IWL_DEBUG_INFO("Runtime Alive received.\n");
6570
6571 if (priv->card_alive.is_valid != UCODE_VALID_OK) {
6572 /* We had an error bringing up the hardware, so take it
6573 * all the way back down so we can try again */
6574 IWL_DEBUG_INFO("Alive failed.\n");
6575 goto restart;
6576 }
6577
6578 /* Initialize uCode has loaded Runtime uCode ... verify inst image.
6579 * This is a paranoid check, because we would not have gotten the
6580 * "runtime" alive if code weren't properly loaded. */
6581 if (iwl4965_verify_ucode(priv)) {
6582 /* Runtime instruction load was bad;
6583 * take it all the way back down so we can try again */
6584 IWL_DEBUG_INFO("Bad runtime uCode load.\n");
6585 goto restart;
6586 }
6587
6588 iwl4965_clear_stations_table(priv);
6589
6590 rc = iwl4965_alive_notify(priv);
6591 if (rc) {
6592 IWL_WARNING("Could not complete ALIVE transition [ntf]: %d\n",
6593 rc);
6594 goto restart;
6595 }
6596
6597 /* After the ALIVE response, we can send host commands to 4965 uCode */
6598 set_bit(STATUS_ALIVE, &priv->status);
6599
6600 /* Clear out the uCode error bit if it is set */
6601 clear_bit(STATUS_FW_ERROR, &priv->status);
6602
6603 if (iwl4965_is_rfkill(priv))
6604 return;
6605
6606 ieee80211_start_queues(priv->hw);
6607
6608 priv->active_rate = priv->rates_mask;
6609 priv->active_rate_basic = priv->rates_mask & IWL_BASIC_RATES_MASK;
6610
6611 iwl4965_send_power_mode(priv, IWL_POWER_LEVEL(priv->power_mode));
6612
6613 if (iwl4965_is_associated(priv)) {
6614 struct iwl4965_rxon_cmd *active_rxon =
6615 (struct iwl4965_rxon_cmd *)(&priv->active_rxon);
6616
6617 memcpy(&priv->staging_rxon, &priv->active_rxon,
6618 sizeof(priv->staging_rxon));
6619 active_rxon->filter_flags &= ~RXON_FILTER_ASSOC_MSK;
6620 } else {
6621 /* Initialize our rx_config data */
6622 iwl4965_connection_init_rx_config(priv);
6623 memcpy(priv->staging_rxon.node_addr, priv->mac_addr, ETH_ALEN);
6624 }
6625
6626 /* Configure Bluetooth device coexistence support */
6627 iwl4965_send_bt_config(priv);
6628
6629 /* Configure the adapter for unassociated operation */
6630 iwl4965_commit_rxon(priv);
6631
6632 /* At this point, the NIC is initialized and operational */
6633 priv->notif_missed_beacons = 0;
6634 set_bit(STATUS_READY, &priv->status);
6635
6636 iwl4965_rf_kill_ct_config(priv);
6637
6638 IWL_DEBUG_INFO("ALIVE processing complete.\n");
6639 wake_up_interruptible(&priv->wait_command_queue);
6640
6641 if (priv->error_recovering)
6642 iwl4965_error_recovery(priv);
6643
6644 return;
6645
6646 restart:
6647 queue_work(priv->workqueue, &priv->restart);
6648 }
6649
6650 static void iwl4965_cancel_deferred_work(struct iwl4965_priv *priv);
6651
6652 static void __iwl4965_down(struct iwl4965_priv *priv)
6653 {
6654 unsigned long flags;
6655 int exit_pending = test_bit(STATUS_EXIT_PENDING, &priv->status);
6656 struct ieee80211_conf *conf = NULL;
6657
6658 IWL_DEBUG_INFO(DRV_NAME " is going down\n");
6659
6660 conf = ieee80211_get_hw_conf(priv->hw);
6661
6662 if (!exit_pending)
6663 set_bit(STATUS_EXIT_PENDING, &priv->status);
6664
6665 iwl4965_clear_stations_table(priv);
6666
6667 /* Unblock any waiting calls */
6668 wake_up_interruptible_all(&priv->wait_command_queue);
6669
6670 /* Wipe out the EXIT_PENDING status bit if we are not actually
6671 * exiting the module */
6672 if (!exit_pending)
6673 clear_bit(STATUS_EXIT_PENDING, &priv->status);
6674
6675 /* stop and reset the on-board processor */
6676 iwl4965_write32(priv, CSR_RESET, CSR_RESET_REG_FLAG_NEVO_RESET);
6677
6678 /* tell the device to stop sending interrupts */
6679 iwl4965_disable_interrupts(priv);
6680
6681 if (priv->mac80211_registered)
6682 ieee80211_stop_queues(priv->hw);
6683
6684 /* If we have not previously called iwl4965_init() then
6685 * clear all bits but the RF Kill and SUSPEND bits and return */
6686 if (!iwl4965_is_init(priv)) {
6687 priv->status = test_bit(STATUS_RF_KILL_HW, &priv->status) <<
6688 STATUS_RF_KILL_HW |
6689 test_bit(STATUS_RF_KILL_SW, &priv->status) <<
6690 STATUS_RF_KILL_SW |
6691 test_bit(STATUS_GEO_CONFIGURED, &priv->status) <<
6692 STATUS_GEO_CONFIGURED |
6693 test_bit(STATUS_IN_SUSPEND, &priv->status) <<
6694 STATUS_IN_SUSPEND;
6695 goto exit;
6696 }
6697
6698 /* ...otherwise clear out all the status bits but the RF Kill and
6699 * SUSPEND bits and continue taking the NIC down. */
6700 priv->status &= test_bit(STATUS_RF_KILL_HW, &priv->status) <<
6701 STATUS_RF_KILL_HW |
6702 test_bit(STATUS_RF_KILL_SW, &priv->status) <<
6703 STATUS_RF_KILL_SW |
6704 test_bit(STATUS_GEO_CONFIGURED, &priv->status) <<
6705 STATUS_GEO_CONFIGURED |
6706 test_bit(STATUS_IN_SUSPEND, &priv->status) <<
6707 STATUS_IN_SUSPEND |
6708 test_bit(STATUS_FW_ERROR, &priv->status) <<
6709 STATUS_FW_ERROR;
6710
6711 spin_lock_irqsave(&priv->lock, flags);
6712 iwl4965_clear_bit(priv, CSR_GP_CNTRL,
6713 CSR_GP_CNTRL_REG_FLAG_MAC_ACCESS_REQ);
6714 spin_unlock_irqrestore(&priv->lock, flags);
6715
6716 iwl4965_hw_txq_ctx_stop(priv);
6717 iwl4965_hw_rxq_stop(priv);
6718
6719 spin_lock_irqsave(&priv->lock, flags);
6720 if (!iwl4965_grab_nic_access(priv)) {
6721 iwl4965_write_prph(priv, APMG_CLK_DIS_REG,
6722 APMG_CLK_VAL_DMA_CLK_RQT);
6723 iwl4965_release_nic_access(priv);
6724 }
6725 spin_unlock_irqrestore(&priv->lock, flags);
6726
6727 udelay(5);
6728
6729 iwl4965_hw_nic_stop_master(priv);
6730 iwl4965_set_bit(priv, CSR_RESET, CSR_RESET_REG_FLAG_SW_RESET);
6731 iwl4965_hw_nic_reset(priv);
6732
6733 exit:
6734 memset(&priv->card_alive, 0, sizeof(struct iwl4965_alive_resp));
6735
6736 if (priv->ibss_beacon)
6737 dev_kfree_skb(priv->ibss_beacon);
6738 priv->ibss_beacon = NULL;
6739
6740 /* clear out any free frames */
6741 iwl4965_clear_free_frames(priv);
6742 }
6743
6744 static void iwl4965_down(struct iwl4965_priv *priv)
6745 {
6746 mutex_lock(&priv->mutex);
6747 __iwl4965_down(priv);
6748 mutex_unlock(&priv->mutex);
6749
6750 iwl4965_cancel_deferred_work(priv);
6751 }
6752
6753 #define MAX_HW_RESTARTS 5
6754
6755 static int __iwl4965_up(struct iwl4965_priv *priv)
6756 {
6757 int rc, i;
6758
6759 if (test_bit(STATUS_EXIT_PENDING, &priv->status)) {
6760 IWL_WARNING("Exit pending; will not bring the NIC up\n");
6761 return -EIO;
6762 }
6763
6764 if (test_bit(STATUS_RF_KILL_SW, &priv->status)) {
6765 IWL_WARNING("Radio disabled by SW RF kill (module "
6766 "parameter)\n");
6767 return -ENODEV;
6768 }
6769
6770 if (!priv->ucode_data_backup.v_addr || !priv->ucode_data.v_addr) {
6771 IWL_ERROR("ucode not available for device bringup\n");
6772 return -EIO;
6773 }
6774
6775 /* If platform's RF_KILL switch is NOT set to KILL */
6776 if (iwl4965_read32(priv, CSR_GP_CNTRL) &
6777 CSR_GP_CNTRL_REG_FLAG_HW_RF_KILL_SW)
6778 clear_bit(STATUS_RF_KILL_HW, &priv->status);
6779 else {
6780 set_bit(STATUS_RF_KILL_HW, &priv->status);
6781 if (!test_bit(STATUS_IN_SUSPEND, &priv->status)) {
6782 IWL_WARNING("Radio disabled by HW RF Kill switch\n");
6783 return -ENODEV;
6784 }
6785 }
6786
6787 iwl4965_write32(priv, CSR_INT, 0xFFFFFFFF);
6788
6789 rc = iwl4965_hw_nic_init(priv);
6790 if (rc) {
6791 IWL_ERROR("Unable to int nic\n");
6792 return rc;
6793 }
6794
6795 /* make sure rfkill handshake bits are cleared */
6796 iwl4965_write32(priv, CSR_UCODE_DRV_GP1_CLR, CSR_UCODE_SW_BIT_RFKILL);
6797 iwl4965_write32(priv, CSR_UCODE_DRV_GP1_CLR,
6798 CSR_UCODE_DRV_GP1_BIT_CMD_BLOCKED);
6799
6800 /* clear (again), then enable host interrupts */
6801 iwl4965_write32(priv, CSR_INT, 0xFFFFFFFF);
6802 iwl4965_enable_interrupts(priv);
6803
6804 /* really make sure rfkill handshake bits are cleared */
6805 iwl4965_write32(priv, CSR_UCODE_DRV_GP1_CLR, CSR_UCODE_SW_BIT_RFKILL);
6806 iwl4965_write32(priv, CSR_UCODE_DRV_GP1_CLR, CSR_UCODE_SW_BIT_RFKILL);
6807
6808 /* Copy original ucode data image from disk into backup cache.
6809 * This will be used to initialize the on-board processor's
6810 * data SRAM for a clean start when the runtime program first loads. */
6811 memcpy(priv->ucode_data_backup.v_addr, priv->ucode_data.v_addr,
6812 priv->ucode_data.len);
6813
6814 /* We return success when we resume from suspend and rf_kill is on. */
6815 if (test_bit(STATUS_RF_KILL_HW, &priv->status))
6816 return 0;
6817
6818 for (i = 0; i < MAX_HW_RESTARTS; i++) {
6819
6820 iwl4965_clear_stations_table(priv);
6821
6822 /* load bootstrap state machine,
6823 * load bootstrap program into processor's memory,
6824 * prepare to load the "initialize" uCode */
6825 rc = iwl4965_load_bsm(priv);
6826
6827 if (rc) {
6828 IWL_ERROR("Unable to set up bootstrap uCode: %d\n", rc);
6829 continue;
6830 }
6831
6832 /* start card; "initialize" will load runtime ucode */
6833 iwl4965_nic_start(priv);
6834
6835 IWL_DEBUG_INFO(DRV_NAME " is coming up\n");
6836
6837 return 0;
6838 }
6839
6840 set_bit(STATUS_EXIT_PENDING, &priv->status);
6841 __iwl4965_down(priv);
6842
6843 /* tried to restart and config the device for as long as our
6844 * patience could withstand */
6845 IWL_ERROR("Unable to initialize device after %d attempts.\n", i);
6846 return -EIO;
6847 }
6848
6849
6850 /*****************************************************************************
6851 *
6852 * Workqueue callbacks
6853 *
6854 *****************************************************************************/
6855
6856 static void iwl4965_bg_init_alive_start(struct work_struct *data)
6857 {
6858 struct iwl4965_priv *priv =
6859 container_of(data, struct iwl4965_priv, init_alive_start.work);
6860
6861 if (test_bit(STATUS_EXIT_PENDING, &priv->status))
6862 return;
6863
6864 mutex_lock(&priv->mutex);
6865 iwl4965_init_alive_start(priv);
6866 mutex_unlock(&priv->mutex);
6867 }
6868
6869 static void iwl4965_bg_alive_start(struct work_struct *data)
6870 {
6871 struct iwl4965_priv *priv =
6872 container_of(data, struct iwl4965_priv, alive_start.work);
6873
6874 if (test_bit(STATUS_EXIT_PENDING, &priv->status))
6875 return;
6876
6877 mutex_lock(&priv->mutex);
6878 iwl4965_alive_start(priv);
6879 mutex_unlock(&priv->mutex);
6880 }
6881
6882 static void iwl4965_bg_rf_kill(struct work_struct *work)
6883 {
6884 struct iwl4965_priv *priv = container_of(work, struct iwl4965_priv, rf_kill);
6885
6886 wake_up_interruptible(&priv->wait_command_queue);
6887
6888 if (test_bit(STATUS_EXIT_PENDING, &priv->status))
6889 return;
6890
6891 mutex_lock(&priv->mutex);
6892
6893 if (!iwl4965_is_rfkill(priv)) {
6894 IWL_DEBUG(IWL_DL_INFO | IWL_DL_RF_KILL,
6895 "HW and/or SW RF Kill no longer active, restarting "
6896 "device\n");
6897 if (!test_bit(STATUS_EXIT_PENDING, &priv->status))
6898 queue_work(priv->workqueue, &priv->restart);
6899 } else {
6900
6901 if (!test_bit(STATUS_RF_KILL_HW, &priv->status))
6902 IWL_DEBUG_RF_KILL("Can not turn radio back on - "
6903 "disabled by SW switch\n");
6904 else
6905 IWL_WARNING("Radio Frequency Kill Switch is On:\n"
6906 "Kill switch must be turned off for "
6907 "wireless networking to work.\n");
6908 }
6909 mutex_unlock(&priv->mutex);
6910 }
6911
6912 #define IWL_SCAN_CHECK_WATCHDOG (7 * HZ)
6913
6914 static void iwl4965_bg_scan_check(struct work_struct *data)
6915 {
6916 struct iwl4965_priv *priv =
6917 container_of(data, struct iwl4965_priv, scan_check.work);
6918
6919 if (test_bit(STATUS_EXIT_PENDING, &priv->status))
6920 return;
6921
6922 mutex_lock(&priv->mutex);
6923 if (test_bit(STATUS_SCANNING, &priv->status) ||
6924 test_bit(STATUS_SCAN_ABORTING, &priv->status)) {
6925 IWL_DEBUG(IWL_DL_INFO | IWL_DL_SCAN,
6926 "Scan completion watchdog resetting adapter (%dms)\n",
6927 jiffies_to_msecs(IWL_SCAN_CHECK_WATCHDOG));
6928
6929 if (!test_bit(STATUS_EXIT_PENDING, &priv->status))
6930 iwl4965_send_scan_abort(priv);
6931 }
6932 mutex_unlock(&priv->mutex);
6933 }
6934
6935 static void iwl4965_bg_request_scan(struct work_struct *data)
6936 {
6937 struct iwl4965_priv *priv =
6938 container_of(data, struct iwl4965_priv, request_scan);
6939 struct iwl4965_host_cmd cmd = {
6940 .id = REPLY_SCAN_CMD,
6941 .len = sizeof(struct iwl4965_scan_cmd),
6942 .meta.flags = CMD_SIZE_HUGE,
6943 };
6944 int rc = 0;
6945 struct iwl4965_scan_cmd *scan;
6946 struct ieee80211_conf *conf = NULL;
6947 u8 direct_mask;
6948 int phymode;
6949
6950 conf = ieee80211_get_hw_conf(priv->hw);
6951
6952 mutex_lock(&priv->mutex);
6953
6954 if (!iwl4965_is_ready(priv)) {
6955 IWL_WARNING("request scan called when driver not ready.\n");
6956 goto done;
6957 }
6958
6959 /* Make sure the scan wasn't cancelled before this queued work
6960 * was given the chance to run... */
6961 if (!test_bit(STATUS_SCANNING, &priv->status))
6962 goto done;
6963
6964 /* This should never be called or scheduled if there is currently
6965 * a scan active in the hardware. */
6966 if (test_bit(STATUS_SCAN_HW, &priv->status)) {
6967 IWL_DEBUG_INFO("Multiple concurrent scan requests in parallel. "
6968 "Ignoring second request.\n");
6969 rc = -EIO;
6970 goto done;
6971 }
6972
6973 if (test_bit(STATUS_EXIT_PENDING, &priv->status)) {
6974 IWL_DEBUG_SCAN("Aborting scan due to device shutdown\n");
6975 goto done;
6976 }
6977
6978 if (test_bit(STATUS_SCAN_ABORTING, &priv->status)) {
6979 IWL_DEBUG_HC("Scan request while abort pending. Queuing.\n");
6980 goto done;
6981 }
6982
6983 if (iwl4965_is_rfkill(priv)) {
6984 IWL_DEBUG_HC("Aborting scan due to RF Kill activation\n");
6985 goto done;
6986 }
6987
6988 if (!test_bit(STATUS_READY, &priv->status)) {
6989 IWL_DEBUG_HC("Scan request while uninitialized. Queuing.\n");
6990 goto done;
6991 }
6992
6993 if (!priv->scan_bands) {
6994 IWL_DEBUG_HC("Aborting scan due to no requested bands\n");
6995 goto done;
6996 }
6997
6998 if (!priv->scan) {
6999 priv->scan = kmalloc(sizeof(struct iwl4965_scan_cmd) +
7000 IWL_MAX_SCAN_SIZE, GFP_KERNEL);
7001 if (!priv->scan) {
7002 rc = -ENOMEM;
7003 goto done;
7004 }
7005 }
7006 scan = priv->scan;
7007 memset(scan, 0, sizeof(struct iwl4965_scan_cmd) + IWL_MAX_SCAN_SIZE);
7008
7009 scan->quiet_plcp_th = IWL_PLCP_QUIET_THRESH;
7010 scan->quiet_time = IWL_ACTIVE_QUIET_TIME;
7011
7012 if (iwl4965_is_associated(priv)) {
7013 u16 interval = 0;
7014 u32 extra;
7015 u32 suspend_time = 100;
7016 u32 scan_suspend_time = 100;
7017 unsigned long flags;
7018
7019 IWL_DEBUG_INFO("Scanning while associated...\n");
7020
7021 spin_lock_irqsave(&priv->lock, flags);
7022 interval = priv->beacon_int;
7023 spin_unlock_irqrestore(&priv->lock, flags);
7024
7025 scan->suspend_time = 0;
7026 scan->max_out_time = cpu_to_le32(200 * 1024);
7027 if (!interval)
7028 interval = suspend_time;
7029
7030 extra = (suspend_time / interval) << 22;
7031 scan_suspend_time = (extra |
7032 ((suspend_time % interval) * 1024));
7033 scan->suspend_time = cpu_to_le32(scan_suspend_time);
7034 IWL_DEBUG_SCAN("suspend_time 0x%X beacon interval %d\n",
7035 scan_suspend_time, interval);
7036 }
7037
7038 /* We should add the ability for user to lock to PASSIVE ONLY */
7039 if (priv->one_direct_scan) {
7040 IWL_DEBUG_SCAN
7041 ("Kicking off one direct scan for '%s'\n",
7042 iwl4965_escape_essid(priv->direct_ssid,
7043 priv->direct_ssid_len));
7044 scan->direct_scan[0].id = WLAN_EID_SSID;
7045 scan->direct_scan[0].len = priv->direct_ssid_len;
7046 memcpy(scan->direct_scan[0].ssid,
7047 priv->direct_ssid, priv->direct_ssid_len);
7048 direct_mask = 1;
7049 } else if (!iwl4965_is_associated(priv) && priv->essid_len) {
7050 scan->direct_scan[0].id = WLAN_EID_SSID;
7051 scan->direct_scan[0].len = priv->essid_len;
7052 memcpy(scan->direct_scan[0].ssid, priv->essid, priv->essid_len);
7053 direct_mask = 1;
7054 } else
7055 direct_mask = 0;
7056
7057 /* We don't build a direct scan probe request; the uCode will do
7058 * that based on the direct_mask added to each channel entry */
7059 scan->tx_cmd.len = cpu_to_le16(
7060 iwl4965_fill_probe_req(priv, (struct ieee80211_mgmt *)scan->data,
7061 IWL_MAX_SCAN_SIZE - sizeof(*scan), 0));
7062 scan->tx_cmd.tx_flags = TX_CMD_FLG_SEQ_CTL_MSK;
7063 scan->tx_cmd.sta_id = priv->hw_setting.bcast_sta_id;
7064 scan->tx_cmd.stop_time.life_time = TX_CMD_LIFE_TIME_INFINITE;
7065
7066 /* flags + rate selection */
7067
7068 scan->tx_cmd.tx_flags |= cpu_to_le32(0x200);
7069
7070 switch (priv->scan_bands) {
7071 case 2:
7072 scan->flags = RXON_FLG_BAND_24G_MSK | RXON_FLG_AUTO_DETECT_MSK;
7073 scan->tx_cmd.rate_n_flags =
7074 iwl4965_hw_set_rate_n_flags(IWL_RATE_1M_PLCP,
7075 RATE_MCS_ANT_B_MSK|RATE_MCS_CCK_MSK);
7076
7077 scan->good_CRC_th = 0;
7078 phymode = MODE_IEEE80211G;
7079 break;
7080
7081 case 1:
7082 scan->tx_cmd.rate_n_flags =
7083 iwl4965_hw_set_rate_n_flags(IWL_RATE_6M_PLCP,
7084 RATE_MCS_ANT_B_MSK);
7085 scan->good_CRC_th = IWL_GOOD_CRC_TH;
7086 phymode = MODE_IEEE80211A;
7087 break;
7088
7089 default:
7090 IWL_WARNING("Invalid scan band count\n");
7091 goto done;
7092 }
7093
7094 /* select Rx chains */
7095
7096 /* Force use of chains B and C (0x6) for scan Rx.
7097 * Avoid A (0x1) because of its off-channel reception on A-band.
7098 * MIMO is not used here, but value is required to make uCode happy. */
7099 scan->rx_chain = RXON_RX_CHAIN_DRIVER_FORCE_MSK |
7100 cpu_to_le16((0x7 << RXON_RX_CHAIN_VALID_POS) |
7101 (0x6 << RXON_RX_CHAIN_FORCE_SEL_POS) |
7102 (0x7 << RXON_RX_CHAIN_FORCE_MIMO_SEL_POS));
7103
7104 if (priv->iw_mode == IEEE80211_IF_TYPE_MNTR)
7105 scan->filter_flags = RXON_FILTER_PROMISC_MSK;
7106
7107 if (direct_mask)
7108 IWL_DEBUG_SCAN
7109 ("Initiating direct scan for %s.\n",
7110 iwl4965_escape_essid(priv->essid, priv->essid_len));
7111 else
7112 IWL_DEBUG_SCAN("Initiating indirect scan.\n");
7113
7114 scan->channel_count =
7115 iwl4965_get_channels_for_scan(
7116 priv, phymode, 1, /* active */
7117 direct_mask,
7118 (void *)&scan->data[le16_to_cpu(scan->tx_cmd.len)]);
7119
7120 cmd.len += le16_to_cpu(scan->tx_cmd.len) +
7121 scan->channel_count * sizeof(struct iwl4965_scan_channel);
7122 cmd.data = scan;
7123 scan->len = cpu_to_le16(cmd.len);
7124
7125 set_bit(STATUS_SCAN_HW, &priv->status);
7126 rc = iwl4965_send_cmd_sync(priv, &cmd);
7127 if (rc)
7128 goto done;
7129
7130 queue_delayed_work(priv->workqueue, &priv->scan_check,
7131 IWL_SCAN_CHECK_WATCHDOG);
7132
7133 mutex_unlock(&priv->mutex);
7134 return;
7135
7136 done:
7137 /* inform mac80211 scan aborted */
7138 queue_work(priv->workqueue, &priv->scan_completed);
7139 mutex_unlock(&priv->mutex);
7140 }
7141
7142 static void iwl4965_bg_up(struct work_struct *data)
7143 {
7144 struct iwl4965_priv *priv = container_of(data, struct iwl4965_priv, up);
7145
7146 if (test_bit(STATUS_EXIT_PENDING, &priv->status))
7147 return;
7148
7149 mutex_lock(&priv->mutex);
7150 __iwl4965_up(priv);
7151 mutex_unlock(&priv->mutex);
7152 }
7153
7154 static void iwl4965_bg_restart(struct work_struct *data)
7155 {
7156 struct iwl4965_priv *priv = container_of(data, struct iwl4965_priv, restart);
7157
7158 if (test_bit(STATUS_EXIT_PENDING, &priv->status))
7159 return;
7160
7161 iwl4965_down(priv);
7162 queue_work(priv->workqueue, &priv->up);
7163 }
7164
7165 static void iwl4965_bg_rx_replenish(struct work_struct *data)
7166 {
7167 struct iwl4965_priv *priv =
7168 container_of(data, struct iwl4965_priv, rx_replenish);
7169
7170 if (test_bit(STATUS_EXIT_PENDING, &priv->status))
7171 return;
7172
7173 mutex_lock(&priv->mutex);
7174 iwl4965_rx_replenish(priv);
7175 mutex_unlock(&priv->mutex);
7176 }
7177
7178 #define IWL_DELAY_NEXT_SCAN (HZ*2)
7179
7180 static void iwl4965_bg_post_associate(struct work_struct *data)
7181 {
7182 struct iwl4965_priv *priv = container_of(data, struct iwl4965_priv,
7183 post_associate.work);
7184
7185 int rc = 0;
7186 struct ieee80211_conf *conf = NULL;
7187 DECLARE_MAC_BUF(mac);
7188
7189 if (priv->iw_mode == IEEE80211_IF_TYPE_AP) {
7190 IWL_ERROR("%s Should not be called in AP mode\n", __FUNCTION__);
7191 return;
7192 }
7193
7194 IWL_DEBUG_ASSOC("Associated as %d to: %s\n",
7195 priv->assoc_id,
7196 print_mac(mac, priv->active_rxon.bssid_addr));
7197
7198
7199 if (test_bit(STATUS_EXIT_PENDING, &priv->status))
7200 return;
7201
7202 mutex_lock(&priv->mutex);
7203
7204 if (!priv->vif || !priv->is_open) {
7205 mutex_unlock(&priv->mutex);
7206 return;
7207 }
7208 iwl4965_scan_cancel_timeout(priv, 200);
7209
7210 conf = ieee80211_get_hw_conf(priv->hw);
7211
7212 priv->staging_rxon.filter_flags &= ~RXON_FILTER_ASSOC_MSK;
7213 iwl4965_commit_rxon(priv);
7214
7215 memset(&priv->rxon_timing, 0, sizeof(struct iwl4965_rxon_time_cmd));
7216 iwl4965_setup_rxon_timing(priv);
7217 rc = iwl4965_send_cmd_pdu(priv, REPLY_RXON_TIMING,
7218 sizeof(priv->rxon_timing), &priv->rxon_timing);
7219 if (rc)
7220 IWL_WARNING("REPLY_RXON_TIMING failed - "
7221 "Attempting to continue.\n");
7222
7223 priv->staging_rxon.filter_flags |= RXON_FILTER_ASSOC_MSK;
7224
7225 #ifdef CONFIG_IWL4965_HT
7226 if (priv->current_ht_config.is_ht)
7227 iwl4965_set_rxon_ht(priv, &priv->current_ht_config);
7228 #endif /* CONFIG_IWL4965_HT*/
7229 iwl4965_set_rxon_chain(priv);
7230 priv->staging_rxon.assoc_id = cpu_to_le16(priv->assoc_id);
7231
7232 IWL_DEBUG_ASSOC("assoc id %d beacon interval %d\n",
7233 priv->assoc_id, priv->beacon_int);
7234
7235 if (priv->assoc_capability & WLAN_CAPABILITY_SHORT_PREAMBLE)
7236 priv->staging_rxon.flags |= RXON_FLG_SHORT_PREAMBLE_MSK;
7237 else
7238 priv->staging_rxon.flags &= ~RXON_FLG_SHORT_PREAMBLE_MSK;
7239
7240 if (priv->staging_rxon.flags & RXON_FLG_BAND_24G_MSK) {
7241 if (priv->assoc_capability & WLAN_CAPABILITY_SHORT_SLOT_TIME)
7242 priv->staging_rxon.flags |= RXON_FLG_SHORT_SLOT_MSK;
7243 else
7244 priv->staging_rxon.flags &= ~RXON_FLG_SHORT_SLOT_MSK;
7245
7246 if (priv->iw_mode == IEEE80211_IF_TYPE_IBSS)
7247 priv->staging_rxon.flags &= ~RXON_FLG_SHORT_SLOT_MSK;
7248
7249 }
7250
7251 iwl4965_commit_rxon(priv);
7252
7253 switch (priv->iw_mode) {
7254 case IEEE80211_IF_TYPE_STA:
7255 iwl4965_rate_scale_init(priv->hw, IWL_AP_ID);
7256 break;
7257
7258 case IEEE80211_IF_TYPE_IBSS:
7259
7260 /* clear out the station table */
7261 iwl4965_clear_stations_table(priv);
7262
7263 iwl4965_rxon_add_station(priv, iwl4965_broadcast_addr, 0);
7264 iwl4965_rxon_add_station(priv, priv->bssid, 0);
7265 iwl4965_rate_scale_init(priv->hw, IWL_STA_ID);
7266 iwl4965_send_beacon_cmd(priv);
7267
7268 break;
7269
7270 default:
7271 IWL_ERROR("%s Should not be called in %d mode\n",
7272 __FUNCTION__, priv->iw_mode);
7273 break;
7274 }
7275
7276 iwl4965_sequence_reset(priv);
7277
7278 #ifdef CONFIG_IWL4965_SENSITIVITY
7279 /* Enable Rx differential gain and sensitivity calibrations */
7280 iwl4965_chain_noise_reset(priv);
7281 priv->start_calib = 1;
7282 #endif /* CONFIG_IWL4965_SENSITIVITY */
7283
7284 if (priv->iw_mode == IEEE80211_IF_TYPE_IBSS)
7285 priv->assoc_station_added = 1;
7286
7287 #ifdef CONFIG_IWL4965_QOS
7288 iwl4965_activate_qos(priv, 0);
7289 #endif /* CONFIG_IWL4965_QOS */
7290 /* we have just associated, don't start scan too early */
7291 priv->next_scan_jiffies = jiffies + IWL_DELAY_NEXT_SCAN;
7292 mutex_unlock(&priv->mutex);
7293 }
7294
7295 static void iwl4965_bg_abort_scan(struct work_struct *work)
7296 {
7297 struct iwl4965_priv *priv = container_of(work, struct iwl4965_priv, abort_scan);
7298
7299 if (!iwl4965_is_ready(priv))
7300 return;
7301
7302 mutex_lock(&priv->mutex);
7303
7304 set_bit(STATUS_SCAN_ABORTING, &priv->status);
7305 iwl4965_send_scan_abort(priv);
7306
7307 mutex_unlock(&priv->mutex);
7308 }
7309
7310 static int iwl4965_mac_config(struct ieee80211_hw *hw, struct ieee80211_conf *conf);
7311
7312 static void iwl4965_bg_scan_completed(struct work_struct *work)
7313 {
7314 struct iwl4965_priv *priv =
7315 container_of(work, struct iwl4965_priv, scan_completed);
7316
7317 IWL_DEBUG(IWL_DL_INFO | IWL_DL_SCAN, "SCAN complete scan\n");
7318
7319 if (test_bit(STATUS_EXIT_PENDING, &priv->status))
7320 return;
7321
7322 if (test_bit(STATUS_CONF_PENDING, &priv->status))
7323 iwl4965_mac_config(priv->hw, ieee80211_get_hw_conf(priv->hw));
7324
7325 ieee80211_scan_completed(priv->hw);
7326
7327 /* Since setting the TXPOWER may have been deferred while
7328 * performing the scan, fire one off */
7329 mutex_lock(&priv->mutex);
7330 iwl4965_hw_reg_send_txpower(priv);
7331 mutex_unlock(&priv->mutex);
7332 }
7333
7334 /*****************************************************************************
7335 *
7336 * mac80211 entry point functions
7337 *
7338 *****************************************************************************/
7339
7340 #define UCODE_READY_TIMEOUT (2 * HZ)
7341
7342 static int iwl4965_mac_start(struct ieee80211_hw *hw)
7343 {
7344 struct iwl4965_priv *priv = hw->priv;
7345 int ret;
7346
7347 IWL_DEBUG_MAC80211("enter\n");
7348
7349 if (pci_enable_device(priv->pci_dev)) {
7350 IWL_ERROR("Fail to pci_enable_device\n");
7351 return -ENODEV;
7352 }
7353 pci_restore_state(priv->pci_dev);
7354 pci_enable_msi(priv->pci_dev);
7355
7356 ret = request_irq(priv->pci_dev->irq, iwl4965_isr, IRQF_SHARED,
7357 DRV_NAME, priv);
7358 if (ret) {
7359 IWL_ERROR("Error allocating IRQ %d\n", priv->pci_dev->irq);
7360 goto out_disable_msi;
7361 }
7362
7363 /* we should be verifying the device is ready to be opened */
7364 mutex_lock(&priv->mutex);
7365
7366 memset(&priv->staging_rxon, 0, sizeof(struct iwl4965_rxon_cmd));
7367 /* fetch ucode file from disk, alloc and copy to bus-master buffers ...
7368 * ucode filename and max sizes are card-specific. */
7369
7370 if (!priv->ucode_code.len) {
7371 ret = iwl4965_read_ucode(priv);
7372 if (ret) {
7373 IWL_ERROR("Could not read microcode: %d\n", ret);
7374 mutex_unlock(&priv->mutex);
7375 goto out_release_irq;
7376 }
7377 }
7378
7379 ret = __iwl4965_up(priv);
7380
7381 mutex_unlock(&priv->mutex);
7382
7383 if (ret)
7384 goto out_release_irq;
7385
7386 IWL_DEBUG_INFO("Start UP work done.\n");
7387
7388 if (test_bit(STATUS_IN_SUSPEND, &priv->status))
7389 return 0;
7390
7391 /* Wait for START_ALIVE from ucode. Otherwise callbacks from
7392 * mac80211 will not be run successfully. */
7393 ret = wait_event_interruptible_timeout(priv->wait_command_queue,
7394 test_bit(STATUS_READY, &priv->status),
7395 UCODE_READY_TIMEOUT);
7396 if (!ret) {
7397 if (!test_bit(STATUS_READY, &priv->status)) {
7398 IWL_ERROR("Wait for START_ALIVE timeout after %dms.\n",
7399 jiffies_to_msecs(UCODE_READY_TIMEOUT));
7400 ret = -ETIMEDOUT;
7401 goto out_release_irq;
7402 }
7403 }
7404
7405 priv->is_open = 1;
7406 IWL_DEBUG_MAC80211("leave\n");
7407 return 0;
7408
7409 out_release_irq:
7410 free_irq(priv->pci_dev->irq, priv);
7411 out_disable_msi:
7412 pci_disable_msi(priv->pci_dev);
7413 pci_disable_device(priv->pci_dev);
7414 priv->is_open = 0;
7415 IWL_DEBUG_MAC80211("leave - failed\n");
7416 return ret;
7417 }
7418
7419 static void iwl4965_mac_stop(struct ieee80211_hw *hw)
7420 {
7421 struct iwl4965_priv *priv = hw->priv;
7422
7423 IWL_DEBUG_MAC80211("enter\n");
7424
7425 if (!priv->is_open) {
7426 IWL_DEBUG_MAC80211("leave - skip\n");
7427 return;
7428 }
7429
7430 priv->is_open = 0;
7431
7432 if (iwl4965_is_ready_rf(priv)) {
7433 /* stop mac, cancel any scan request and clear
7434 * RXON_FILTER_ASSOC_MSK BIT
7435 */
7436 mutex_lock(&priv->mutex);
7437 iwl4965_scan_cancel_timeout(priv, 100);
7438 cancel_delayed_work(&priv->post_associate);
7439 mutex_unlock(&priv->mutex);
7440 }
7441
7442 iwl4965_down(priv);
7443
7444 flush_workqueue(priv->workqueue);
7445 free_irq(priv->pci_dev->irq, priv);
7446 pci_disable_msi(priv->pci_dev);
7447 pci_save_state(priv->pci_dev);
7448 pci_disable_device(priv->pci_dev);
7449
7450 IWL_DEBUG_MAC80211("leave\n");
7451 }
7452
7453 static int iwl4965_mac_tx(struct ieee80211_hw *hw, struct sk_buff *skb,
7454 struct ieee80211_tx_control *ctl)
7455 {
7456 struct iwl4965_priv *priv = hw->priv;
7457
7458 IWL_DEBUG_MAC80211("enter\n");
7459
7460 if (priv->iw_mode == IEEE80211_IF_TYPE_MNTR) {
7461 IWL_DEBUG_MAC80211("leave - monitor\n");
7462 return -1;
7463 }
7464
7465 IWL_DEBUG_TX("dev->xmit(%d bytes) at rate 0x%02x\n", skb->len,
7466 ctl->tx_rate);
7467
7468 if (iwl4965_tx_skb(priv, skb, ctl))
7469 dev_kfree_skb_any(skb);
7470
7471 IWL_DEBUG_MAC80211("leave\n");
7472 return 0;
7473 }
7474
7475 static int iwl4965_mac_add_interface(struct ieee80211_hw *hw,
7476 struct ieee80211_if_init_conf *conf)
7477 {
7478 struct iwl4965_priv *priv = hw->priv;
7479 unsigned long flags;
7480 DECLARE_MAC_BUF(mac);
7481
7482 IWL_DEBUG_MAC80211("enter: type %d\n", conf->type);
7483
7484 if (priv->vif) {
7485 IWL_DEBUG_MAC80211("leave - vif != NULL\n");
7486 return -EOPNOTSUPP;
7487 }
7488
7489 spin_lock_irqsave(&priv->lock, flags);
7490 priv->vif = conf->vif;
7491
7492 spin_unlock_irqrestore(&priv->lock, flags);
7493
7494 mutex_lock(&priv->mutex);
7495
7496 if (conf->mac_addr) {
7497 IWL_DEBUG_MAC80211("Set %s\n", print_mac(mac, conf->mac_addr));
7498 memcpy(priv->mac_addr, conf->mac_addr, ETH_ALEN);
7499 }
7500
7501 if (iwl4965_is_ready(priv))
7502 iwl4965_set_mode(priv, conf->type);
7503
7504 mutex_unlock(&priv->mutex);
7505
7506 IWL_DEBUG_MAC80211("leave\n");
7507 return 0;
7508 }
7509
7510 /**
7511 * iwl4965_mac_config - mac80211 config callback
7512 *
7513 * We ignore conf->flags & IEEE80211_CONF_SHORT_SLOT_TIME since it seems to
7514 * be set inappropriately and the driver currently sets the hardware up to
7515 * use it whenever needed.
7516 */
7517 static int iwl4965_mac_config(struct ieee80211_hw *hw, struct ieee80211_conf *conf)
7518 {
7519 struct iwl4965_priv *priv = hw->priv;
7520 const struct iwl4965_channel_info *ch_info;
7521 unsigned long flags;
7522 int ret = 0;
7523
7524 mutex_lock(&priv->mutex);
7525 IWL_DEBUG_MAC80211("enter to channel %d\n", conf->channel);
7526
7527 priv->add_radiotap = !!(conf->flags & IEEE80211_CONF_RADIOTAP);
7528
7529 if (!iwl4965_is_ready(priv)) {
7530 IWL_DEBUG_MAC80211("leave - not ready\n");
7531 ret = -EIO;
7532 goto out;
7533 }
7534
7535 if (unlikely(!iwl4965_param_disable_hw_scan &&
7536 test_bit(STATUS_SCANNING, &priv->status))) {
7537 IWL_DEBUG_MAC80211("leave - scanning\n");
7538 set_bit(STATUS_CONF_PENDING, &priv->status);
7539 mutex_unlock(&priv->mutex);
7540 return 0;
7541 }
7542
7543 spin_lock_irqsave(&priv->lock, flags);
7544
7545 ch_info = iwl4965_get_channel_info(priv, conf->phymode, conf->channel);
7546 if (!is_channel_valid(ch_info)) {
7547 IWL_DEBUG_SCAN("Channel %d [%d] is INVALID for this SKU.\n",
7548 conf->channel, conf->phymode);
7549 IWL_DEBUG_MAC80211("leave - invalid channel\n");
7550 spin_unlock_irqrestore(&priv->lock, flags);
7551 ret = -EINVAL;
7552 goto out;
7553 }
7554
7555 #ifdef CONFIG_IWL4965_HT
7556 /* if we are switching fron ht to 2.4 clear flags
7557 * from any ht related info since 2.4 does not
7558 * support ht */
7559 if ((le16_to_cpu(priv->staging_rxon.channel) != conf->channel)
7560 #ifdef IEEE80211_CONF_CHANNEL_SWITCH
7561 && !(conf->flags & IEEE80211_CONF_CHANNEL_SWITCH)
7562 #endif
7563 )
7564 priv->staging_rxon.flags = 0;
7565 #endif /* CONFIG_IWL4965_HT */
7566
7567 iwl4965_set_rxon_channel(priv, conf->phymode, conf->channel);
7568
7569 iwl4965_set_flags_for_phymode(priv, conf->phymode);
7570
7571 /* The list of supported rates and rate mask can be different
7572 * for each phymode; since the phymode may have changed, reset
7573 * the rate mask to what mac80211 lists */
7574 iwl4965_set_rate(priv);
7575
7576 spin_unlock_irqrestore(&priv->lock, flags);
7577
7578 #ifdef IEEE80211_CONF_CHANNEL_SWITCH
7579 if (conf->flags & IEEE80211_CONF_CHANNEL_SWITCH) {
7580 iwl4965_hw_channel_switch(priv, conf->channel);
7581 goto out;
7582 }
7583 #endif
7584
7585 iwl4965_radio_kill_sw(priv, !conf->radio_enabled);
7586
7587 if (!conf->radio_enabled) {
7588 IWL_DEBUG_MAC80211("leave - radio disabled\n");
7589 goto out;
7590 }
7591
7592 if (iwl4965_is_rfkill(priv)) {
7593 IWL_DEBUG_MAC80211("leave - RF kill\n");
7594 ret = -EIO;
7595 goto out;
7596 }
7597
7598 iwl4965_set_rate(priv);
7599
7600 if (memcmp(&priv->active_rxon,
7601 &priv->staging_rxon, sizeof(priv->staging_rxon)))
7602 iwl4965_commit_rxon(priv);
7603 else
7604 IWL_DEBUG_INFO("No re-sending same RXON configuration.\n");
7605
7606 IWL_DEBUG_MAC80211("leave\n");
7607
7608 out:
7609 clear_bit(STATUS_CONF_PENDING, &priv->status);
7610 mutex_unlock(&priv->mutex);
7611 return ret;
7612 }
7613
7614 static void iwl4965_config_ap(struct iwl4965_priv *priv)
7615 {
7616 int rc = 0;
7617
7618 if (test_bit(STATUS_EXIT_PENDING, &priv->status))
7619 return;
7620
7621 /* The following should be done only at AP bring up */
7622 if ((priv->active_rxon.filter_flags & RXON_FILTER_ASSOC_MSK) == 0) {
7623
7624 /* RXON - unassoc (to set timing command) */
7625 priv->staging_rxon.filter_flags &= ~RXON_FILTER_ASSOC_MSK;
7626 iwl4965_commit_rxon(priv);
7627
7628 /* RXON Timing */
7629 memset(&priv->rxon_timing, 0, sizeof(struct iwl4965_rxon_time_cmd));
7630 iwl4965_setup_rxon_timing(priv);
7631 rc = iwl4965_send_cmd_pdu(priv, REPLY_RXON_TIMING,
7632 sizeof(priv->rxon_timing), &priv->rxon_timing);
7633 if (rc)
7634 IWL_WARNING("REPLY_RXON_TIMING failed - "
7635 "Attempting to continue.\n");
7636
7637 iwl4965_set_rxon_chain(priv);
7638
7639 /* FIXME: what should be the assoc_id for AP? */
7640 priv->staging_rxon.assoc_id = cpu_to_le16(priv->assoc_id);
7641 if (priv->assoc_capability & WLAN_CAPABILITY_SHORT_PREAMBLE)
7642 priv->staging_rxon.flags |=
7643 RXON_FLG_SHORT_PREAMBLE_MSK;
7644 else
7645 priv->staging_rxon.flags &=
7646 ~RXON_FLG_SHORT_PREAMBLE_MSK;
7647
7648 if (priv->staging_rxon.flags & RXON_FLG_BAND_24G_MSK) {
7649 if (priv->assoc_capability &
7650 WLAN_CAPABILITY_SHORT_SLOT_TIME)
7651 priv->staging_rxon.flags |=
7652 RXON_FLG_SHORT_SLOT_MSK;
7653 else
7654 priv->staging_rxon.flags &=
7655 ~RXON_FLG_SHORT_SLOT_MSK;
7656
7657 if (priv->iw_mode == IEEE80211_IF_TYPE_IBSS)
7658 priv->staging_rxon.flags &=
7659 ~RXON_FLG_SHORT_SLOT_MSK;
7660 }
7661 /* restore RXON assoc */
7662 priv->staging_rxon.filter_flags |= RXON_FILTER_ASSOC_MSK;
7663 iwl4965_commit_rxon(priv);
7664 #ifdef CONFIG_IWL4965_QOS
7665 iwl4965_activate_qos(priv, 1);
7666 #endif
7667 iwl4965_rxon_add_station(priv, iwl4965_broadcast_addr, 0);
7668 }
7669 iwl4965_send_beacon_cmd(priv);
7670
7671 /* FIXME - we need to add code here to detect a totally new
7672 * configuration, reset the AP, unassoc, rxon timing, assoc,
7673 * clear sta table, add BCAST sta... */
7674 }
7675
7676 static int iwl4965_mac_config_interface(struct ieee80211_hw *hw,
7677 struct ieee80211_vif *vif,
7678 struct ieee80211_if_conf *conf)
7679 {
7680 struct iwl4965_priv *priv = hw->priv;
7681 DECLARE_MAC_BUF(mac);
7682 unsigned long flags;
7683 int rc;
7684
7685 if (conf == NULL)
7686 return -EIO;
7687
7688 if ((priv->iw_mode == IEEE80211_IF_TYPE_AP) &&
7689 (!conf->beacon || !conf->ssid_len)) {
7690 IWL_DEBUG_MAC80211
7691 ("Leaving in AP mode because HostAPD is not ready.\n");
7692 return 0;
7693 }
7694
7695 if (!iwl4965_is_alive(priv))
7696 return -EAGAIN;
7697
7698 mutex_lock(&priv->mutex);
7699
7700 if (conf->bssid)
7701 IWL_DEBUG_MAC80211("bssid: %s\n",
7702 print_mac(mac, conf->bssid));
7703
7704 /*
7705 * very dubious code was here; the probe filtering flag is never set:
7706 *
7707 if (unlikely(test_bit(STATUS_SCANNING, &priv->status)) &&
7708 !(priv->hw->flags & IEEE80211_HW_NO_PROBE_FILTERING)) {
7709 */
7710 if (unlikely(test_bit(STATUS_SCANNING, &priv->status))) {
7711 IWL_DEBUG_MAC80211("leave - scanning\n");
7712 mutex_unlock(&priv->mutex);
7713 return 0;
7714 }
7715
7716 if (priv->vif != vif) {
7717 IWL_DEBUG_MAC80211("leave - priv->vif != vif\n");
7718 mutex_unlock(&priv->mutex);
7719 return 0;
7720 }
7721
7722 if (priv->iw_mode == IEEE80211_IF_TYPE_AP) {
7723 if (!conf->bssid) {
7724 conf->bssid = priv->mac_addr;
7725 memcpy(priv->bssid, priv->mac_addr, ETH_ALEN);
7726 IWL_DEBUG_MAC80211("bssid was set to: %s\n",
7727 print_mac(mac, conf->bssid));
7728 }
7729 if (priv->ibss_beacon)
7730 dev_kfree_skb(priv->ibss_beacon);
7731
7732 priv->ibss_beacon = conf->beacon;
7733 }
7734
7735 if (iwl4965_is_rfkill(priv))
7736 goto done;
7737
7738 if (conf->bssid && !is_zero_ether_addr(conf->bssid) &&
7739 !is_multicast_ether_addr(conf->bssid)) {
7740 /* If there is currently a HW scan going on in the background
7741 * then we need to cancel it else the RXON below will fail. */
7742 if (iwl4965_scan_cancel_timeout(priv, 100)) {
7743 IWL_WARNING("Aborted scan still in progress "
7744 "after 100ms\n");
7745 IWL_DEBUG_MAC80211("leaving - scan abort failed.\n");
7746 mutex_unlock(&priv->mutex);
7747 return -EAGAIN;
7748 }
7749 memcpy(priv->staging_rxon.bssid_addr, conf->bssid, ETH_ALEN);
7750
7751 /* TODO: Audit driver for usage of these members and see
7752 * if mac80211 deprecates them (priv->bssid looks like it
7753 * shouldn't be there, but I haven't scanned the IBSS code
7754 * to verify) - jpk */
7755 memcpy(priv->bssid, conf->bssid, ETH_ALEN);
7756
7757 if (priv->iw_mode == IEEE80211_IF_TYPE_AP)
7758 iwl4965_config_ap(priv);
7759 else {
7760 rc = iwl4965_commit_rxon(priv);
7761 if ((priv->iw_mode == IEEE80211_IF_TYPE_STA) && rc)
7762 iwl4965_rxon_add_station(
7763 priv, priv->active_rxon.bssid_addr, 1);
7764 }
7765
7766 } else {
7767 iwl4965_scan_cancel_timeout(priv, 100);
7768 priv->staging_rxon.filter_flags &= ~RXON_FILTER_ASSOC_MSK;
7769 iwl4965_commit_rxon(priv);
7770 }
7771
7772 done:
7773 spin_lock_irqsave(&priv->lock, flags);
7774 if (!conf->ssid_len)
7775 memset(priv->essid, 0, IW_ESSID_MAX_SIZE);
7776 else
7777 memcpy(priv->essid, conf->ssid, conf->ssid_len);
7778
7779 priv->essid_len = conf->ssid_len;
7780 spin_unlock_irqrestore(&priv->lock, flags);
7781
7782 IWL_DEBUG_MAC80211("leave\n");
7783 mutex_unlock(&priv->mutex);
7784
7785 return 0;
7786 }
7787
7788 static void iwl4965_configure_filter(struct ieee80211_hw *hw,
7789 unsigned int changed_flags,
7790 unsigned int *total_flags,
7791 int mc_count, struct dev_addr_list *mc_list)
7792 {
7793 /*
7794 * XXX: dummy
7795 * see also iwl4965_connection_init_rx_config
7796 */
7797 *total_flags = 0;
7798 }
7799
7800 static void iwl4965_mac_remove_interface(struct ieee80211_hw *hw,
7801 struct ieee80211_if_init_conf *conf)
7802 {
7803 struct iwl4965_priv *priv = hw->priv;
7804
7805 IWL_DEBUG_MAC80211("enter\n");
7806
7807 mutex_lock(&priv->mutex);
7808
7809 if (iwl4965_is_ready_rf(priv)) {
7810 iwl4965_scan_cancel_timeout(priv, 100);
7811 cancel_delayed_work(&priv->post_associate);
7812 priv->staging_rxon.filter_flags &= ~RXON_FILTER_ASSOC_MSK;
7813 iwl4965_commit_rxon(priv);
7814 }
7815 if (priv->vif == conf->vif) {
7816 priv->vif = NULL;
7817 memset(priv->bssid, 0, ETH_ALEN);
7818 memset(priv->essid, 0, IW_ESSID_MAX_SIZE);
7819 priv->essid_len = 0;
7820 }
7821 mutex_unlock(&priv->mutex);
7822
7823 IWL_DEBUG_MAC80211("leave\n");
7824
7825 }
7826
7827 static void iwl4965_bss_info_changed(struct ieee80211_hw *hw,
7828 struct ieee80211_vif *vif,
7829 struct ieee80211_bss_conf *bss_conf,
7830 u32 changes)
7831 {
7832 struct iwl4965_priv *priv = hw->priv;
7833
7834 if (changes & BSS_CHANGED_ERP_PREAMBLE) {
7835 if (bss_conf->use_short_preamble)
7836 priv->staging_rxon.flags |= RXON_FLG_SHORT_PREAMBLE_MSK;
7837 else
7838 priv->staging_rxon.flags &= ~RXON_FLG_SHORT_PREAMBLE_MSK;
7839 }
7840
7841 if (changes & BSS_CHANGED_ERP_CTS_PROT) {
7842 if (bss_conf->use_cts_prot && (priv->phymode != MODE_IEEE80211A))
7843 priv->staging_rxon.flags |= RXON_FLG_TGG_PROTECT_MSK;
7844 else
7845 priv->staging_rxon.flags &= ~RXON_FLG_TGG_PROTECT_MSK;
7846 }
7847
7848 if (changes & BSS_CHANGED_ASSOC) {
7849 /*
7850 * TODO:
7851 * do stuff instead of sniffing assoc resp
7852 */
7853 }
7854
7855 if (iwl4965_is_associated(priv))
7856 iwl4965_send_rxon_assoc(priv);
7857 }
7858
7859 static int iwl4965_mac_hw_scan(struct ieee80211_hw *hw, u8 *ssid, size_t len)
7860 {
7861 int rc = 0;
7862 unsigned long flags;
7863 struct iwl4965_priv *priv = hw->priv;
7864
7865 IWL_DEBUG_MAC80211("enter\n");
7866
7867 mutex_lock(&priv->mutex);
7868 spin_lock_irqsave(&priv->lock, flags);
7869
7870 if (!iwl4965_is_ready_rf(priv)) {
7871 rc = -EIO;
7872 IWL_DEBUG_MAC80211("leave - not ready or exit pending\n");
7873 goto out_unlock;
7874 }
7875
7876 if (priv->iw_mode == IEEE80211_IF_TYPE_AP) { /* APs don't scan */
7877 rc = -EIO;
7878 IWL_ERROR("ERROR: APs don't scan\n");
7879 goto out_unlock;
7880 }
7881
7882 /* we don't schedule scan within next_scan_jiffies period */
7883 if (priv->next_scan_jiffies &&
7884 time_after(priv->next_scan_jiffies, jiffies)) {
7885 rc = -EAGAIN;
7886 goto out_unlock;
7887 }
7888 /* if we just finished scan ask for delay */
7889 if (priv->last_scan_jiffies && time_after(priv->last_scan_jiffies +
7890 IWL_DELAY_NEXT_SCAN, jiffies)) {
7891 rc = -EAGAIN;
7892 goto out_unlock;
7893 }
7894 if (len) {
7895 IWL_DEBUG_SCAN("direct scan for %s [%d]\n ",
7896 iwl4965_escape_essid(ssid, len), (int)len);
7897
7898 priv->one_direct_scan = 1;
7899 priv->direct_ssid_len = (u8)
7900 min((u8) len, (u8) IW_ESSID_MAX_SIZE);
7901 memcpy(priv->direct_ssid, ssid, priv->direct_ssid_len);
7902 } else
7903 priv->one_direct_scan = 0;
7904
7905 rc = iwl4965_scan_initiate(priv);
7906
7907 IWL_DEBUG_MAC80211("leave\n");
7908
7909 out_unlock:
7910 spin_unlock_irqrestore(&priv->lock, flags);
7911 mutex_unlock(&priv->mutex);
7912
7913 return rc;
7914 }
7915
7916 static int iwl4965_mac_set_key(struct ieee80211_hw *hw, enum set_key_cmd cmd,
7917 const u8 *local_addr, const u8 *addr,
7918 struct ieee80211_key_conf *key)
7919 {
7920 struct iwl4965_priv *priv = hw->priv;
7921 DECLARE_MAC_BUF(mac);
7922 int rc = 0;
7923 u8 sta_id;
7924
7925 IWL_DEBUG_MAC80211("enter\n");
7926
7927 if (!iwl4965_param_hwcrypto) {
7928 IWL_DEBUG_MAC80211("leave - hwcrypto disabled\n");
7929 return -EOPNOTSUPP;
7930 }
7931
7932 if (is_zero_ether_addr(addr))
7933 /* only support pairwise keys */
7934 return -EOPNOTSUPP;
7935
7936 sta_id = iwl4965_hw_find_station(priv, addr);
7937 if (sta_id == IWL_INVALID_STATION) {
7938 IWL_DEBUG_MAC80211("leave - %s not in station map.\n",
7939 print_mac(mac, addr));
7940 return -EINVAL;
7941 }
7942
7943 mutex_lock(&priv->mutex);
7944
7945 iwl4965_scan_cancel_timeout(priv, 100);
7946
7947 switch (cmd) {
7948 case SET_KEY:
7949 rc = iwl4965_update_sta_key_info(priv, key, sta_id);
7950 if (!rc) {
7951 iwl4965_set_rxon_hwcrypto(priv, 1);
7952 iwl4965_commit_rxon(priv);
7953 key->hw_key_idx = sta_id;
7954 IWL_DEBUG_MAC80211("set_key success, using hwcrypto\n");
7955 key->flags |= IEEE80211_KEY_FLAG_GENERATE_IV;
7956 }
7957 break;
7958 case DISABLE_KEY:
7959 rc = iwl4965_clear_sta_key_info(priv, sta_id);
7960 if (!rc) {
7961 iwl4965_set_rxon_hwcrypto(priv, 0);
7962 iwl4965_commit_rxon(priv);
7963 IWL_DEBUG_MAC80211("disable hwcrypto key\n");
7964 }
7965 break;
7966 default:
7967 rc = -EINVAL;
7968 }
7969
7970 IWL_DEBUG_MAC80211("leave\n");
7971 mutex_unlock(&priv->mutex);
7972
7973 return rc;
7974 }
7975
7976 static int iwl4965_mac_conf_tx(struct ieee80211_hw *hw, int queue,
7977 const struct ieee80211_tx_queue_params *params)
7978 {
7979 struct iwl4965_priv *priv = hw->priv;
7980 #ifdef CONFIG_IWL4965_QOS
7981 unsigned long flags;
7982 int q;
7983 #endif /* CONFIG_IWL4965_QOS */
7984
7985 IWL_DEBUG_MAC80211("enter\n");
7986
7987 if (!iwl4965_is_ready_rf(priv)) {
7988 IWL_DEBUG_MAC80211("leave - RF not ready\n");
7989 return -EIO;
7990 }
7991
7992 if (queue >= AC_NUM) {
7993 IWL_DEBUG_MAC80211("leave - queue >= AC_NUM %d\n", queue);
7994 return 0;
7995 }
7996
7997 #ifdef CONFIG_IWL4965_QOS
7998 if (!priv->qos_data.qos_enable) {
7999 priv->qos_data.qos_active = 0;
8000 IWL_DEBUG_MAC80211("leave - qos not enabled\n");
8001 return 0;
8002 }
8003 q = AC_NUM - 1 - queue;
8004
8005 spin_lock_irqsave(&priv->lock, flags);
8006
8007 priv->qos_data.def_qos_parm.ac[q].cw_min = cpu_to_le16(params->cw_min);
8008 priv->qos_data.def_qos_parm.ac[q].cw_max = cpu_to_le16(params->cw_max);
8009 priv->qos_data.def_qos_parm.ac[q].aifsn = params->aifs;
8010 priv->qos_data.def_qos_parm.ac[q].edca_txop =
8011 cpu_to_le16((params->burst_time * 100));
8012
8013 priv->qos_data.def_qos_parm.ac[q].reserved1 = 0;
8014 priv->qos_data.qos_active = 1;
8015
8016 spin_unlock_irqrestore(&priv->lock, flags);
8017
8018 mutex_lock(&priv->mutex);
8019 if (priv->iw_mode == IEEE80211_IF_TYPE_AP)
8020 iwl4965_activate_qos(priv, 1);
8021 else if (priv->assoc_id && iwl4965_is_associated(priv))
8022 iwl4965_activate_qos(priv, 0);
8023
8024 mutex_unlock(&priv->mutex);
8025
8026 #endif /*CONFIG_IWL4965_QOS */
8027
8028 IWL_DEBUG_MAC80211("leave\n");
8029 return 0;
8030 }
8031
8032 static int iwl4965_mac_get_tx_stats(struct ieee80211_hw *hw,
8033 struct ieee80211_tx_queue_stats *stats)
8034 {
8035 struct iwl4965_priv *priv = hw->priv;
8036 int i, avail;
8037 struct iwl4965_tx_queue *txq;
8038 struct iwl4965_queue *q;
8039 unsigned long flags;
8040
8041 IWL_DEBUG_MAC80211("enter\n");
8042
8043 if (!iwl4965_is_ready_rf(priv)) {
8044 IWL_DEBUG_MAC80211("leave - RF not ready\n");
8045 return -EIO;
8046 }
8047
8048 spin_lock_irqsave(&priv->lock, flags);
8049
8050 for (i = 0; i < AC_NUM; i++) {
8051 txq = &priv->txq[i];
8052 q = &txq->q;
8053 avail = iwl4965_queue_space(q);
8054
8055 stats->data[i].len = q->n_window - avail;
8056 stats->data[i].limit = q->n_window - q->high_mark;
8057 stats->data[i].count = q->n_window;
8058
8059 }
8060 spin_unlock_irqrestore(&priv->lock, flags);
8061
8062 IWL_DEBUG_MAC80211("leave\n");
8063
8064 return 0;
8065 }
8066
8067 static int iwl4965_mac_get_stats(struct ieee80211_hw *hw,
8068 struct ieee80211_low_level_stats *stats)
8069 {
8070 IWL_DEBUG_MAC80211("enter\n");
8071 IWL_DEBUG_MAC80211("leave\n");
8072
8073 return 0;
8074 }
8075
8076 static u64 iwl4965_mac_get_tsf(struct ieee80211_hw *hw)
8077 {
8078 IWL_DEBUG_MAC80211("enter\n");
8079 IWL_DEBUG_MAC80211("leave\n");
8080
8081 return 0;
8082 }
8083
8084 static void iwl4965_mac_reset_tsf(struct ieee80211_hw *hw)
8085 {
8086 struct iwl4965_priv *priv = hw->priv;
8087 unsigned long flags;
8088
8089 mutex_lock(&priv->mutex);
8090 IWL_DEBUG_MAC80211("enter\n");
8091
8092 priv->lq_mngr.lq_ready = 0;
8093 #ifdef CONFIG_IWL4965_HT
8094 spin_lock_irqsave(&priv->lock, flags);
8095 memset(&priv->current_ht_config, 0, sizeof(struct iwl_ht_info));
8096 spin_unlock_irqrestore(&priv->lock, flags);
8097 #endif /* CONFIG_IWL4965_HT */
8098
8099 #ifdef CONFIG_IWL4965_QOS
8100 iwl4965_reset_qos(priv);
8101 #endif
8102
8103 cancel_delayed_work(&priv->post_associate);
8104
8105 spin_lock_irqsave(&priv->lock, flags);
8106 priv->assoc_id = 0;
8107 priv->assoc_capability = 0;
8108 priv->call_post_assoc_from_beacon = 0;
8109 priv->assoc_station_added = 0;
8110
8111 /* new association get rid of ibss beacon skb */
8112 if (priv->ibss_beacon)
8113 dev_kfree_skb(priv->ibss_beacon);
8114
8115 priv->ibss_beacon = NULL;
8116
8117 priv->beacon_int = priv->hw->conf.beacon_int;
8118 priv->timestamp1 = 0;
8119 priv->timestamp0 = 0;
8120 if ((priv->iw_mode == IEEE80211_IF_TYPE_STA))
8121 priv->beacon_int = 0;
8122
8123 spin_unlock_irqrestore(&priv->lock, flags);
8124
8125 if (!iwl4965_is_ready_rf(priv)) {
8126 IWL_DEBUG_MAC80211("leave - not ready\n");
8127 mutex_unlock(&priv->mutex);
8128 return;
8129 }
8130
8131 /* we are restarting association process
8132 * clear RXON_FILTER_ASSOC_MSK bit
8133 */
8134 if (priv->iw_mode != IEEE80211_IF_TYPE_AP) {
8135 iwl4965_scan_cancel_timeout(priv, 100);
8136 priv->staging_rxon.filter_flags &= ~RXON_FILTER_ASSOC_MSK;
8137 iwl4965_commit_rxon(priv);
8138 }
8139
8140 /* Per mac80211.h: This is only used in IBSS mode... */
8141 if (priv->iw_mode != IEEE80211_IF_TYPE_IBSS) {
8142
8143 IWL_DEBUG_MAC80211("leave - not in IBSS\n");
8144 mutex_unlock(&priv->mutex);
8145 return;
8146 }
8147
8148 priv->only_active_channel = 0;
8149
8150 iwl4965_set_rate(priv);
8151
8152 mutex_unlock(&priv->mutex);
8153
8154 IWL_DEBUG_MAC80211("leave\n");
8155 }
8156
8157 static int iwl4965_mac_beacon_update(struct ieee80211_hw *hw, struct sk_buff *skb,
8158 struct ieee80211_tx_control *control)
8159 {
8160 struct iwl4965_priv *priv = hw->priv;
8161 unsigned long flags;
8162
8163 mutex_lock(&priv->mutex);
8164 IWL_DEBUG_MAC80211("enter\n");
8165
8166 if (!iwl4965_is_ready_rf(priv)) {
8167 IWL_DEBUG_MAC80211("leave - RF not ready\n");
8168 mutex_unlock(&priv->mutex);
8169 return -EIO;
8170 }
8171
8172 if (priv->iw_mode != IEEE80211_IF_TYPE_IBSS) {
8173 IWL_DEBUG_MAC80211("leave - not IBSS\n");
8174 mutex_unlock(&priv->mutex);
8175 return -EIO;
8176 }
8177
8178 spin_lock_irqsave(&priv->lock, flags);
8179
8180 if (priv->ibss_beacon)
8181 dev_kfree_skb(priv->ibss_beacon);
8182
8183 priv->ibss_beacon = skb;
8184
8185 priv->assoc_id = 0;
8186
8187 IWL_DEBUG_MAC80211("leave\n");
8188 spin_unlock_irqrestore(&priv->lock, flags);
8189
8190 #ifdef CONFIG_IWL4965_QOS
8191 iwl4965_reset_qos(priv);
8192 #endif
8193
8194 queue_work(priv->workqueue, &priv->post_associate.work);
8195
8196 mutex_unlock(&priv->mutex);
8197
8198 return 0;
8199 }
8200
8201 #ifdef CONFIG_IWL4965_HT
8202
8203 static void iwl4965_ht_info_fill(struct ieee80211_conf *conf,
8204 struct iwl4965_priv *priv)
8205 {
8206 struct iwl_ht_info *iwl_conf = &priv->current_ht_config;
8207 struct ieee80211_ht_info *ht_conf = &conf->ht_conf;
8208 struct ieee80211_ht_bss_info *ht_bss_conf = &conf->ht_bss_conf;
8209
8210 IWL_DEBUG_MAC80211("enter: \n");
8211
8212 if (!(conf->flags & IEEE80211_CONF_SUPPORT_HT_MODE)) {
8213 iwl_conf->is_ht = 0;
8214 return;
8215 }
8216
8217 iwl_conf->is_ht = 1;
8218 priv->ps_mode = (u8)((ht_conf->cap & IEEE80211_HT_CAP_MIMO_PS) >> 2);
8219
8220 if (ht_conf->cap & IEEE80211_HT_CAP_SGI_20)
8221 iwl_conf->sgf |= 0x1;
8222 if (ht_conf->cap & IEEE80211_HT_CAP_SGI_40)
8223 iwl_conf->sgf |= 0x2;
8224
8225 iwl_conf->is_green_field = !!(ht_conf->cap & IEEE80211_HT_CAP_GRN_FLD);
8226 iwl_conf->max_amsdu_size =
8227 !!(ht_conf->cap & IEEE80211_HT_CAP_MAX_AMSDU);
8228 iwl_conf->supported_chan_width =
8229 !!(ht_conf->cap & IEEE80211_HT_CAP_SUP_WIDTH);
8230 iwl_conf->tx_mimo_ps_mode =
8231 (u8)((ht_conf->cap & IEEE80211_HT_CAP_MIMO_PS) >> 2);
8232 memcpy(iwl_conf->supp_mcs_set, ht_conf->supp_mcs_set, 16);
8233
8234 iwl_conf->control_channel = ht_bss_conf->primary_channel;
8235 iwl_conf->extension_chan_offset =
8236 ht_bss_conf->bss_cap & IEEE80211_HT_IE_CHA_SEC_OFFSET;
8237 iwl_conf->tx_chan_width =
8238 !!(ht_bss_conf->bss_cap & IEEE80211_HT_IE_CHA_WIDTH);
8239 iwl_conf->ht_protection =
8240 ht_bss_conf->bss_op_mode & IEEE80211_HT_IE_HT_PROTECTION;
8241 iwl_conf->non_GF_STA_present =
8242 !!(ht_bss_conf->bss_op_mode & IEEE80211_HT_IE_NON_GF_STA_PRSNT);
8243
8244 IWL_DEBUG_MAC80211("control channel %d\n",
8245 iwl_conf->control_channel);
8246 IWL_DEBUG_MAC80211("leave\n");
8247 }
8248
8249 static int iwl4965_mac_conf_ht(struct ieee80211_hw *hw,
8250 struct ieee80211_conf *conf)
8251 {
8252 struct iwl4965_priv *priv = hw->priv;
8253
8254 IWL_DEBUG_MAC80211("enter: \n");
8255
8256 iwl4965_ht_info_fill(conf, priv);
8257 iwl4965_set_rxon_chain(priv);
8258
8259 if (priv && priv->assoc_id &&
8260 (priv->iw_mode == IEEE80211_IF_TYPE_STA)) {
8261 unsigned long flags;
8262
8263 spin_lock_irqsave(&priv->lock, flags);
8264 if (priv->beacon_int)
8265 queue_work(priv->workqueue, &priv->post_associate.work);
8266 else
8267 priv->call_post_assoc_from_beacon = 1;
8268 spin_unlock_irqrestore(&priv->lock, flags);
8269 }
8270
8271 IWL_DEBUG_MAC80211("leave:\n");
8272 return 0;
8273 }
8274
8275 static void iwl4965_set_ht_capab(struct ieee80211_hw *hw,
8276 struct ieee80211_ht_cap *ht_cap,
8277 u8 use_current_config)
8278 {
8279 struct ieee80211_conf *conf = &hw->conf;
8280 struct ieee80211_hw_mode *mode = conf->mode;
8281
8282 if (use_current_config) {
8283 ht_cap->cap_info = cpu_to_le16(conf->ht_conf.cap);
8284 memcpy(ht_cap->supp_mcs_set,
8285 conf->ht_conf.supp_mcs_set, 16);
8286 } else {
8287 ht_cap->cap_info = cpu_to_le16(mode->ht_info.cap);
8288 memcpy(ht_cap->supp_mcs_set,
8289 mode->ht_info.supp_mcs_set, 16);
8290 }
8291 ht_cap->ampdu_params_info =
8292 (mode->ht_info.ampdu_factor & IEEE80211_HT_CAP_AMPDU_FACTOR) |
8293 ((mode->ht_info.ampdu_density << 2) &
8294 IEEE80211_HT_CAP_AMPDU_DENSITY);
8295 }
8296
8297 #endif /*CONFIG_IWL4965_HT*/
8298
8299 /*****************************************************************************
8300 *
8301 * sysfs attributes
8302 *
8303 *****************************************************************************/
8304
8305 #ifdef CONFIG_IWL4965_DEBUG
8306
8307 /*
8308 * The following adds a new attribute to the sysfs representation
8309 * of this device driver (i.e. a new file in /sys/bus/pci/drivers/iwl/)
8310 * used for controlling the debug level.
8311 *
8312 * See the level definitions in iwl for details.
8313 */
8314
8315 static ssize_t show_debug_level(struct device_driver *d, char *buf)
8316 {
8317 return sprintf(buf, "0x%08X\n", iwl4965_debug_level);
8318 }
8319 static ssize_t store_debug_level(struct device_driver *d,
8320 const char *buf, size_t count)
8321 {
8322 char *p = (char *)buf;
8323 u32 val;
8324
8325 val = simple_strtoul(p, &p, 0);
8326 if (p == buf)
8327 printk(KERN_INFO DRV_NAME
8328 ": %s is not in hex or decimal form.\n", buf);
8329 else
8330 iwl4965_debug_level = val;
8331
8332 return strnlen(buf, count);
8333 }
8334
8335 static DRIVER_ATTR(debug_level, S_IWUSR | S_IRUGO,
8336 show_debug_level, store_debug_level);
8337
8338 #endif /* CONFIG_IWL4965_DEBUG */
8339
8340 static ssize_t show_rf_kill(struct device *d,
8341 struct device_attribute *attr, char *buf)
8342 {
8343 /*
8344 * 0 - RF kill not enabled
8345 * 1 - SW based RF kill active (sysfs)
8346 * 2 - HW based RF kill active
8347 * 3 - Both HW and SW based RF kill active
8348 */
8349 struct iwl4965_priv *priv = (struct iwl4965_priv *)d->driver_data;
8350 int val = (test_bit(STATUS_RF_KILL_SW, &priv->status) ? 0x1 : 0x0) |
8351 (test_bit(STATUS_RF_KILL_HW, &priv->status) ? 0x2 : 0x0);
8352
8353 return sprintf(buf, "%i\n", val);
8354 }
8355
8356 static ssize_t store_rf_kill(struct device *d,
8357 struct device_attribute *attr,
8358 const char *buf, size_t count)
8359 {
8360 struct iwl4965_priv *priv = (struct iwl4965_priv *)d->driver_data;
8361
8362 mutex_lock(&priv->mutex);
8363 iwl4965_radio_kill_sw(priv, buf[0] == '1');
8364 mutex_unlock(&priv->mutex);
8365
8366 return count;
8367 }
8368
8369 static DEVICE_ATTR(rf_kill, S_IWUSR | S_IRUGO, show_rf_kill, store_rf_kill);
8370
8371 static ssize_t show_temperature(struct device *d,
8372 struct device_attribute *attr, char *buf)
8373 {
8374 struct iwl4965_priv *priv = (struct iwl4965_priv *)d->driver_data;
8375
8376 if (!iwl4965_is_alive(priv))
8377 return -EAGAIN;
8378
8379 return sprintf(buf, "%d\n", iwl4965_hw_get_temperature(priv));
8380 }
8381
8382 static DEVICE_ATTR(temperature, S_IRUGO, show_temperature, NULL);
8383
8384 static ssize_t show_rs_window(struct device *d,
8385 struct device_attribute *attr,
8386 char *buf)
8387 {
8388 struct iwl4965_priv *priv = d->driver_data;
8389 return iwl4965_fill_rs_info(priv->hw, buf, IWL_AP_ID);
8390 }
8391 static DEVICE_ATTR(rs_window, S_IRUGO, show_rs_window, NULL);
8392
8393 static ssize_t show_tx_power(struct device *d,
8394 struct device_attribute *attr, char *buf)
8395 {
8396 struct iwl4965_priv *priv = (struct iwl4965_priv *)d->driver_data;
8397 return sprintf(buf, "%d\n", priv->user_txpower_limit);
8398 }
8399
8400 static ssize_t store_tx_power(struct device *d,
8401 struct device_attribute *attr,
8402 const char *buf, size_t count)
8403 {
8404 struct iwl4965_priv *priv = (struct iwl4965_priv *)d->driver_data;
8405 char *p = (char *)buf;
8406 u32 val;
8407
8408 val = simple_strtoul(p, &p, 10);
8409 if (p == buf)
8410 printk(KERN_INFO DRV_NAME
8411 ": %s is not in decimal form.\n", buf);
8412 else
8413 iwl4965_hw_reg_set_txpower(priv, val);
8414
8415 return count;
8416 }
8417
8418 static DEVICE_ATTR(tx_power, S_IWUSR | S_IRUGO, show_tx_power, store_tx_power);
8419
8420 static ssize_t show_flags(struct device *d,
8421 struct device_attribute *attr, char *buf)
8422 {
8423 struct iwl4965_priv *priv = (struct iwl4965_priv *)d->driver_data;
8424
8425 return sprintf(buf, "0x%04X\n", priv->active_rxon.flags);
8426 }
8427
8428 static ssize_t store_flags(struct device *d,
8429 struct device_attribute *attr,
8430 const char *buf, size_t count)
8431 {
8432 struct iwl4965_priv *priv = (struct iwl4965_priv *)d->driver_data;
8433 u32 flags = simple_strtoul(buf, NULL, 0);
8434
8435 mutex_lock(&priv->mutex);
8436 if (le32_to_cpu(priv->staging_rxon.flags) != flags) {
8437 /* Cancel any currently running scans... */
8438 if (iwl4965_scan_cancel_timeout(priv, 100))
8439 IWL_WARNING("Could not cancel scan.\n");
8440 else {
8441 IWL_DEBUG_INFO("Committing rxon.flags = 0x%04X\n",
8442 flags);
8443 priv->staging_rxon.flags = cpu_to_le32(flags);
8444 iwl4965_commit_rxon(priv);
8445 }
8446 }
8447 mutex_unlock(&priv->mutex);
8448
8449 return count;
8450 }
8451
8452 static DEVICE_ATTR(flags, S_IWUSR | S_IRUGO, show_flags, store_flags);
8453
8454 static ssize_t show_filter_flags(struct device *d,
8455 struct device_attribute *attr, char *buf)
8456 {
8457 struct iwl4965_priv *priv = (struct iwl4965_priv *)d->driver_data;
8458
8459 return sprintf(buf, "0x%04X\n",
8460 le32_to_cpu(priv->active_rxon.filter_flags));
8461 }
8462
8463 static ssize_t store_filter_flags(struct device *d,
8464 struct device_attribute *attr,
8465 const char *buf, size_t count)
8466 {
8467 struct iwl4965_priv *priv = (struct iwl4965_priv *)d->driver_data;
8468 u32 filter_flags = simple_strtoul(buf, NULL, 0);
8469
8470 mutex_lock(&priv->mutex);
8471 if (le32_to_cpu(priv->staging_rxon.filter_flags) != filter_flags) {
8472 /* Cancel any currently running scans... */
8473 if (iwl4965_scan_cancel_timeout(priv, 100))
8474 IWL_WARNING("Could not cancel scan.\n");
8475 else {
8476 IWL_DEBUG_INFO("Committing rxon.filter_flags = "
8477 "0x%04X\n", filter_flags);
8478 priv->staging_rxon.filter_flags =
8479 cpu_to_le32(filter_flags);
8480 iwl4965_commit_rxon(priv);
8481 }
8482 }
8483 mutex_unlock(&priv->mutex);
8484
8485 return count;
8486 }
8487
8488 static DEVICE_ATTR(filter_flags, S_IWUSR | S_IRUGO, show_filter_flags,
8489 store_filter_flags);
8490
8491 static ssize_t show_tune(struct device *d,
8492 struct device_attribute *attr, char *buf)
8493 {
8494 struct iwl4965_priv *priv = (struct iwl4965_priv *)d->driver_data;
8495
8496 return sprintf(buf, "0x%04X\n",
8497 (priv->phymode << 8) |
8498 le16_to_cpu(priv->active_rxon.channel));
8499 }
8500
8501 static void iwl4965_set_flags_for_phymode(struct iwl4965_priv *priv, u8 phymode);
8502
8503 static ssize_t store_tune(struct device *d,
8504 struct device_attribute *attr,
8505 const char *buf, size_t count)
8506 {
8507 struct iwl4965_priv *priv = (struct iwl4965_priv *)d->driver_data;
8508 char *p = (char *)buf;
8509 u16 tune = simple_strtoul(p, &p, 0);
8510 u8 phymode = (tune >> 8) & 0xff;
8511 u16 channel = tune & 0xff;
8512
8513 IWL_DEBUG_INFO("Tune request to:%d channel:%d\n", phymode, channel);
8514
8515 mutex_lock(&priv->mutex);
8516 if ((le16_to_cpu(priv->staging_rxon.channel) != channel) ||
8517 (priv->phymode != phymode)) {
8518 const struct iwl4965_channel_info *ch_info;
8519
8520 ch_info = iwl4965_get_channel_info(priv, phymode, channel);
8521 if (!ch_info) {
8522 IWL_WARNING("Requested invalid phymode/channel "
8523 "combination: %d %d\n", phymode, channel);
8524 mutex_unlock(&priv->mutex);
8525 return -EINVAL;
8526 }
8527
8528 /* Cancel any currently running scans... */
8529 if (iwl4965_scan_cancel_timeout(priv, 100))
8530 IWL_WARNING("Could not cancel scan.\n");
8531 else {
8532 IWL_DEBUG_INFO("Committing phymode and "
8533 "rxon.channel = %d %d\n",
8534 phymode, channel);
8535
8536 iwl4965_set_rxon_channel(priv, phymode, channel);
8537 iwl4965_set_flags_for_phymode(priv, phymode);
8538
8539 iwl4965_set_rate(priv);
8540 iwl4965_commit_rxon(priv);
8541 }
8542 }
8543 mutex_unlock(&priv->mutex);
8544
8545 return count;
8546 }
8547
8548 static DEVICE_ATTR(tune, S_IWUSR | S_IRUGO, show_tune, store_tune);
8549
8550 #ifdef CONFIG_IWL4965_SPECTRUM_MEASUREMENT
8551
8552 static ssize_t show_measurement(struct device *d,
8553 struct device_attribute *attr, char *buf)
8554 {
8555 struct iwl4965_priv *priv = dev_get_drvdata(d);
8556 struct iwl4965_spectrum_notification measure_report;
8557 u32 size = sizeof(measure_report), len = 0, ofs = 0;
8558 u8 *data = (u8 *) & measure_report;
8559 unsigned long flags;
8560
8561 spin_lock_irqsave(&priv->lock, flags);
8562 if (!(priv->measurement_status & MEASUREMENT_READY)) {
8563 spin_unlock_irqrestore(&priv->lock, flags);
8564 return 0;
8565 }
8566 memcpy(&measure_report, &priv->measure_report, size);
8567 priv->measurement_status = 0;
8568 spin_unlock_irqrestore(&priv->lock, flags);
8569
8570 while (size && (PAGE_SIZE - len)) {
8571 hex_dump_to_buffer(data + ofs, size, 16, 1, buf + len,
8572 PAGE_SIZE - len, 1);
8573 len = strlen(buf);
8574 if (PAGE_SIZE - len)
8575 buf[len++] = '\n';
8576
8577 ofs += 16;
8578 size -= min(size, 16U);
8579 }
8580
8581 return len;
8582 }
8583
8584 static ssize_t store_measurement(struct device *d,
8585 struct device_attribute *attr,
8586 const char *buf, size_t count)
8587 {
8588 struct iwl4965_priv *priv = dev_get_drvdata(d);
8589 struct ieee80211_measurement_params params = {
8590 .channel = le16_to_cpu(priv->active_rxon.channel),
8591 .start_time = cpu_to_le64(priv->last_tsf),
8592 .duration = cpu_to_le16(1),
8593 };
8594 u8 type = IWL_MEASURE_BASIC;
8595 u8 buffer[32];
8596 u8 channel;
8597
8598 if (count) {
8599 char *p = buffer;
8600 strncpy(buffer, buf, min(sizeof(buffer), count));
8601 channel = simple_strtoul(p, NULL, 0);
8602 if (channel)
8603 params.channel = channel;
8604
8605 p = buffer;
8606 while (*p && *p != ' ')
8607 p++;
8608 if (*p)
8609 type = simple_strtoul(p + 1, NULL, 0);
8610 }
8611
8612 IWL_DEBUG_INFO("Invoking measurement of type %d on "
8613 "channel %d (for '%s')\n", type, params.channel, buf);
8614 iwl4965_get_measurement(priv, &params, type);
8615
8616 return count;
8617 }
8618
8619 static DEVICE_ATTR(measurement, S_IRUSR | S_IWUSR,
8620 show_measurement, store_measurement);
8621 #endif /* CONFIG_IWL4965_SPECTRUM_MEASUREMENT */
8622
8623 static ssize_t store_retry_rate(struct device *d,
8624 struct device_attribute *attr,
8625 const char *buf, size_t count)
8626 {
8627 struct iwl4965_priv *priv = dev_get_drvdata(d);
8628
8629 priv->retry_rate = simple_strtoul(buf, NULL, 0);
8630 if (priv->retry_rate <= 0)
8631 priv->retry_rate = 1;
8632
8633 return count;
8634 }
8635
8636 static ssize_t show_retry_rate(struct device *d,
8637 struct device_attribute *attr, char *buf)
8638 {
8639 struct iwl4965_priv *priv = dev_get_drvdata(d);
8640 return sprintf(buf, "%d", priv->retry_rate);
8641 }
8642
8643 static DEVICE_ATTR(retry_rate, S_IWUSR | S_IRUSR, show_retry_rate,
8644 store_retry_rate);
8645
8646 static ssize_t store_power_level(struct device *d,
8647 struct device_attribute *attr,
8648 const char *buf, size_t count)
8649 {
8650 struct iwl4965_priv *priv = dev_get_drvdata(d);
8651 int rc;
8652 int mode;
8653
8654 mode = simple_strtoul(buf, NULL, 0);
8655 mutex_lock(&priv->mutex);
8656
8657 if (!iwl4965_is_ready(priv)) {
8658 rc = -EAGAIN;
8659 goto out;
8660 }
8661
8662 if ((mode < 1) || (mode > IWL_POWER_LIMIT) || (mode == IWL_POWER_AC))
8663 mode = IWL_POWER_AC;
8664 else
8665 mode |= IWL_POWER_ENABLED;
8666
8667 if (mode != priv->power_mode) {
8668 rc = iwl4965_send_power_mode(priv, IWL_POWER_LEVEL(mode));
8669 if (rc) {
8670 IWL_DEBUG_MAC80211("failed setting power mode.\n");
8671 goto out;
8672 }
8673 priv->power_mode = mode;
8674 }
8675
8676 rc = count;
8677
8678 out:
8679 mutex_unlock(&priv->mutex);
8680 return rc;
8681 }
8682
8683 #define MAX_WX_STRING 80
8684
8685 /* Values are in microsecond */
8686 static const s32 timeout_duration[] = {
8687 350000,
8688 250000,
8689 75000,
8690 37000,
8691 25000,
8692 };
8693 static const s32 period_duration[] = {
8694 400000,
8695 700000,
8696 1000000,
8697 1000000,
8698 1000000
8699 };
8700
8701 static ssize_t show_power_level(struct device *d,
8702 struct device_attribute *attr, char *buf)
8703 {
8704 struct iwl4965_priv *priv = dev_get_drvdata(d);
8705 int level = IWL_POWER_LEVEL(priv->power_mode);
8706 char *p = buf;
8707
8708 p += sprintf(p, "%d ", level);
8709 switch (level) {
8710 case IWL_POWER_MODE_CAM:
8711 case IWL_POWER_AC:
8712 p += sprintf(p, "(AC)");
8713 break;
8714 case IWL_POWER_BATTERY:
8715 p += sprintf(p, "(BATTERY)");
8716 break;
8717 default:
8718 p += sprintf(p,
8719 "(Timeout %dms, Period %dms)",
8720 timeout_duration[level - 1] / 1000,
8721 period_duration[level - 1] / 1000);
8722 }
8723
8724 if (!(priv->power_mode & IWL_POWER_ENABLED))
8725 p += sprintf(p, " OFF\n");
8726 else
8727 p += sprintf(p, " \n");
8728
8729 return (p - buf + 1);
8730
8731 }
8732
8733 static DEVICE_ATTR(power_level, S_IWUSR | S_IRUSR, show_power_level,
8734 store_power_level);
8735
8736 static ssize_t show_channels(struct device *d,
8737 struct device_attribute *attr, char *buf)
8738 {
8739 struct iwl4965_priv *priv = dev_get_drvdata(d);
8740 int len = 0, i;
8741 struct ieee80211_channel *channels = NULL;
8742 const struct ieee80211_hw_mode *hw_mode = NULL;
8743 int count = 0;
8744
8745 if (!iwl4965_is_ready(priv))
8746 return -EAGAIN;
8747
8748 hw_mode = iwl4965_get_hw_mode(priv, MODE_IEEE80211G);
8749 if (!hw_mode)
8750 hw_mode = iwl4965_get_hw_mode(priv, MODE_IEEE80211B);
8751 if (hw_mode) {
8752 channels = hw_mode->channels;
8753 count = hw_mode->num_channels;
8754 }
8755
8756 len +=
8757 sprintf(&buf[len],
8758 "Displaying %d channels in 2.4GHz band "
8759 "(802.11bg):\n", count);
8760
8761 for (i = 0; i < count; i++)
8762 len += sprintf(&buf[len], "%d: %ddBm: BSS%s%s, %s.\n",
8763 channels[i].chan,
8764 channels[i].power_level,
8765 channels[i].
8766 flag & IEEE80211_CHAN_W_RADAR_DETECT ?
8767 " (IEEE 802.11h required)" : "",
8768 (!(channels[i].flag & IEEE80211_CHAN_W_IBSS)
8769 || (channels[i].
8770 flag &
8771 IEEE80211_CHAN_W_RADAR_DETECT)) ? "" :
8772 ", IBSS",
8773 channels[i].
8774 flag & IEEE80211_CHAN_W_ACTIVE_SCAN ?
8775 "active/passive" : "passive only");
8776
8777 hw_mode = iwl4965_get_hw_mode(priv, MODE_IEEE80211A);
8778 if (hw_mode) {
8779 channels = hw_mode->channels;
8780 count = hw_mode->num_channels;
8781 } else {
8782 channels = NULL;
8783 count = 0;
8784 }
8785
8786 len += sprintf(&buf[len], "Displaying %d channels in 5.2GHz band "
8787 "(802.11a):\n", count);
8788
8789 for (i = 0; i < count; i++)
8790 len += sprintf(&buf[len], "%d: %ddBm: BSS%s%s, %s.\n",
8791 channels[i].chan,
8792 channels[i].power_level,
8793 channels[i].
8794 flag & IEEE80211_CHAN_W_RADAR_DETECT ?
8795 " (IEEE 802.11h required)" : "",
8796 (!(channels[i].flag & IEEE80211_CHAN_W_IBSS)
8797 || (channels[i].
8798 flag &
8799 IEEE80211_CHAN_W_RADAR_DETECT)) ? "" :
8800 ", IBSS",
8801 channels[i].
8802 flag & IEEE80211_CHAN_W_ACTIVE_SCAN ?
8803 "active/passive" : "passive only");
8804
8805 return len;
8806 }
8807
8808 static DEVICE_ATTR(channels, S_IRUSR, show_channels, NULL);
8809
8810 static ssize_t show_statistics(struct device *d,
8811 struct device_attribute *attr, char *buf)
8812 {
8813 struct iwl4965_priv *priv = dev_get_drvdata(d);
8814 u32 size = sizeof(struct iwl4965_notif_statistics);
8815 u32 len = 0, ofs = 0;
8816 u8 *data = (u8 *) & priv->statistics;
8817 int rc = 0;
8818
8819 if (!iwl4965_is_alive(priv))
8820 return -EAGAIN;
8821
8822 mutex_lock(&priv->mutex);
8823 rc = iwl4965_send_statistics_request(priv);
8824 mutex_unlock(&priv->mutex);
8825
8826 if (rc) {
8827 len = sprintf(buf,
8828 "Error sending statistics request: 0x%08X\n", rc);
8829 return len;
8830 }
8831
8832 while (size && (PAGE_SIZE - len)) {
8833 hex_dump_to_buffer(data + ofs, size, 16, 1, buf + len,
8834 PAGE_SIZE - len, 1);
8835 len = strlen(buf);
8836 if (PAGE_SIZE - len)
8837 buf[len++] = '\n';
8838
8839 ofs += 16;
8840 size -= min(size, 16U);
8841 }
8842
8843 return len;
8844 }
8845
8846 static DEVICE_ATTR(statistics, S_IRUGO, show_statistics, NULL);
8847
8848 static ssize_t show_antenna(struct device *d,
8849 struct device_attribute *attr, char *buf)
8850 {
8851 struct iwl4965_priv *priv = dev_get_drvdata(d);
8852
8853 if (!iwl4965_is_alive(priv))
8854 return -EAGAIN;
8855
8856 return sprintf(buf, "%d\n", priv->antenna);
8857 }
8858
8859 static ssize_t store_antenna(struct device *d,
8860 struct device_attribute *attr,
8861 const char *buf, size_t count)
8862 {
8863 int ant;
8864 struct iwl4965_priv *priv = dev_get_drvdata(d);
8865
8866 if (count == 0)
8867 return 0;
8868
8869 if (sscanf(buf, "%1i", &ant) != 1) {
8870 IWL_DEBUG_INFO("not in hex or decimal form.\n");
8871 return count;
8872 }
8873
8874 if ((ant >= 0) && (ant <= 2)) {
8875 IWL_DEBUG_INFO("Setting antenna select to %d.\n", ant);
8876 priv->antenna = (enum iwl4965_antenna)ant;
8877 } else
8878 IWL_DEBUG_INFO("Bad antenna select value %d.\n", ant);
8879
8880
8881 return count;
8882 }
8883
8884 static DEVICE_ATTR(antenna, S_IWUSR | S_IRUGO, show_antenna, store_antenna);
8885
8886 static ssize_t show_status(struct device *d,
8887 struct device_attribute *attr, char *buf)
8888 {
8889 struct iwl4965_priv *priv = (struct iwl4965_priv *)d->driver_data;
8890 if (!iwl4965_is_alive(priv))
8891 return -EAGAIN;
8892 return sprintf(buf, "0x%08x\n", (int)priv->status);
8893 }
8894
8895 static DEVICE_ATTR(status, S_IRUGO, show_status, NULL);
8896
8897 static ssize_t dump_error_log(struct device *d,
8898 struct device_attribute *attr,
8899 const char *buf, size_t count)
8900 {
8901 char *p = (char *)buf;
8902
8903 if (p[0] == '1')
8904 iwl4965_dump_nic_error_log((struct iwl4965_priv *)d->driver_data);
8905
8906 return strnlen(buf, count);
8907 }
8908
8909 static DEVICE_ATTR(dump_errors, S_IWUSR, NULL, dump_error_log);
8910
8911 static ssize_t dump_event_log(struct device *d,
8912 struct device_attribute *attr,
8913 const char *buf, size_t count)
8914 {
8915 char *p = (char *)buf;
8916
8917 if (p[0] == '1')
8918 iwl4965_dump_nic_event_log((struct iwl4965_priv *)d->driver_data);
8919
8920 return strnlen(buf, count);
8921 }
8922
8923 static DEVICE_ATTR(dump_events, S_IWUSR, NULL, dump_event_log);
8924
8925 /*****************************************************************************
8926 *
8927 * driver setup and teardown
8928 *
8929 *****************************************************************************/
8930
8931 static void iwl4965_setup_deferred_work(struct iwl4965_priv *priv)
8932 {
8933 priv->workqueue = create_workqueue(DRV_NAME);
8934
8935 init_waitqueue_head(&priv->wait_command_queue);
8936
8937 INIT_WORK(&priv->up, iwl4965_bg_up);
8938 INIT_WORK(&priv->restart, iwl4965_bg_restart);
8939 INIT_WORK(&priv->rx_replenish, iwl4965_bg_rx_replenish);
8940 INIT_WORK(&priv->scan_completed, iwl4965_bg_scan_completed);
8941 INIT_WORK(&priv->request_scan, iwl4965_bg_request_scan);
8942 INIT_WORK(&priv->abort_scan, iwl4965_bg_abort_scan);
8943 INIT_WORK(&priv->rf_kill, iwl4965_bg_rf_kill);
8944 INIT_WORK(&priv->beacon_update, iwl4965_bg_beacon_update);
8945 INIT_DELAYED_WORK(&priv->post_associate, iwl4965_bg_post_associate);
8946 INIT_DELAYED_WORK(&priv->init_alive_start, iwl4965_bg_init_alive_start);
8947 INIT_DELAYED_WORK(&priv->alive_start, iwl4965_bg_alive_start);
8948 INIT_DELAYED_WORK(&priv->scan_check, iwl4965_bg_scan_check);
8949
8950 iwl4965_hw_setup_deferred_work(priv);
8951
8952 tasklet_init(&priv->irq_tasklet, (void (*)(unsigned long))
8953 iwl4965_irq_tasklet, (unsigned long)priv);
8954 }
8955
8956 static void iwl4965_cancel_deferred_work(struct iwl4965_priv *priv)
8957 {
8958 iwl4965_hw_cancel_deferred_work(priv);
8959
8960 cancel_delayed_work_sync(&priv->init_alive_start);
8961 cancel_delayed_work(&priv->scan_check);
8962 cancel_delayed_work(&priv->alive_start);
8963 cancel_delayed_work(&priv->post_associate);
8964 cancel_work_sync(&priv->beacon_update);
8965 }
8966
8967 static struct attribute *iwl4965_sysfs_entries[] = {
8968 &dev_attr_antenna.attr,
8969 &dev_attr_channels.attr,
8970 &dev_attr_dump_errors.attr,
8971 &dev_attr_dump_events.attr,
8972 &dev_attr_flags.attr,
8973 &dev_attr_filter_flags.attr,
8974 #ifdef CONFIG_IWL4965_SPECTRUM_MEASUREMENT
8975 &dev_attr_measurement.attr,
8976 #endif
8977 &dev_attr_power_level.attr,
8978 &dev_attr_retry_rate.attr,
8979 &dev_attr_rf_kill.attr,
8980 &dev_attr_rs_window.attr,
8981 &dev_attr_statistics.attr,
8982 &dev_attr_status.attr,
8983 &dev_attr_temperature.attr,
8984 &dev_attr_tune.attr,
8985 &dev_attr_tx_power.attr,
8986
8987 NULL
8988 };
8989
8990 static struct attribute_group iwl4965_attribute_group = {
8991 .name = NULL, /* put in device directory */
8992 .attrs = iwl4965_sysfs_entries,
8993 };
8994
8995 static struct ieee80211_ops iwl4965_hw_ops = {
8996 .tx = iwl4965_mac_tx,
8997 .start = iwl4965_mac_start,
8998 .stop = iwl4965_mac_stop,
8999 .add_interface = iwl4965_mac_add_interface,
9000 .remove_interface = iwl4965_mac_remove_interface,
9001 .config = iwl4965_mac_config,
9002 .config_interface = iwl4965_mac_config_interface,
9003 .configure_filter = iwl4965_configure_filter,
9004 .set_key = iwl4965_mac_set_key,
9005 .get_stats = iwl4965_mac_get_stats,
9006 .get_tx_stats = iwl4965_mac_get_tx_stats,
9007 .conf_tx = iwl4965_mac_conf_tx,
9008 .get_tsf = iwl4965_mac_get_tsf,
9009 .reset_tsf = iwl4965_mac_reset_tsf,
9010 .beacon_update = iwl4965_mac_beacon_update,
9011 .bss_info_changed = iwl4965_bss_info_changed,
9012 #ifdef CONFIG_IWL4965_HT
9013 .conf_ht = iwl4965_mac_conf_ht,
9014 .ampdu_action = iwl4965_mac_ampdu_action,
9015 #endif /* CONFIG_IWL4965_HT */
9016 .hw_scan = iwl4965_mac_hw_scan
9017 };
9018
9019 static int iwl4965_pci_probe(struct pci_dev *pdev, const struct pci_device_id *ent)
9020 {
9021 int err = 0;
9022 struct iwl4965_priv *priv;
9023 struct ieee80211_hw *hw;
9024 int i;
9025 DECLARE_MAC_BUF(mac);
9026
9027 /* Disabling hardware scan means that mac80211 will perform scans
9028 * "the hard way", rather than using device's scan. */
9029 if (iwl4965_param_disable_hw_scan) {
9030 IWL_DEBUG_INFO("Disabling hw_scan\n");
9031 iwl4965_hw_ops.hw_scan = NULL;
9032 }
9033
9034 if ((iwl4965_param_queues_num > IWL_MAX_NUM_QUEUES) ||
9035 (iwl4965_param_queues_num < IWL_MIN_NUM_QUEUES)) {
9036 IWL_ERROR("invalid queues_num, should be between %d and %d\n",
9037 IWL_MIN_NUM_QUEUES, IWL_MAX_NUM_QUEUES);
9038 err = -EINVAL;
9039 goto out;
9040 }
9041
9042 /* mac80211 allocates memory for this device instance, including
9043 * space for this driver's private structure */
9044 hw = ieee80211_alloc_hw(sizeof(struct iwl4965_priv), &iwl4965_hw_ops);
9045 if (hw == NULL) {
9046 IWL_ERROR("Can not allocate network device\n");
9047 err = -ENOMEM;
9048 goto out;
9049 }
9050 SET_IEEE80211_DEV(hw, &pdev->dev);
9051
9052 hw->rate_control_algorithm = "iwl-4965-rs";
9053
9054 IWL_DEBUG_INFO("*** LOAD DRIVER ***\n");
9055 priv = hw->priv;
9056 priv->hw = hw;
9057
9058 priv->pci_dev = pdev;
9059 priv->antenna = (enum iwl4965_antenna)iwl4965_param_antenna;
9060 #ifdef CONFIG_IWL4965_DEBUG
9061 iwl4965_debug_level = iwl4965_param_debug;
9062 atomic_set(&priv->restrict_refcnt, 0);
9063 #endif
9064 priv->retry_rate = 1;
9065
9066 priv->ibss_beacon = NULL;
9067
9068 /* Tell mac80211 and its clients (e.g. Wireless Extensions)
9069 * the range of signal quality values that we'll provide.
9070 * Negative values for level/noise indicate that we'll provide dBm.
9071 * For WE, at least, non-0 values here *enable* display of values
9072 * in app (iwconfig). */
9073 hw->max_rssi = -20; /* signal level, negative indicates dBm */
9074 hw->max_noise = -20; /* noise level, negative indicates dBm */
9075 hw->max_signal = 100; /* link quality indication (%) */
9076
9077 /* Tell mac80211 our Tx characteristics */
9078 hw->flags = IEEE80211_HW_HOST_GEN_BEACON_TEMPLATE;
9079
9080 /* Default value; 4 EDCA QOS priorities */
9081 hw->queues = 4;
9082 #ifdef CONFIG_IWL4965_HT
9083 /* Enhanced value; more queues, to support 11n aggregation */
9084 hw->queues = 16;
9085 #endif /* CONFIG_IWL4965_HT */
9086
9087 spin_lock_init(&priv->lock);
9088 spin_lock_init(&priv->power_data.lock);
9089 spin_lock_init(&priv->sta_lock);
9090 spin_lock_init(&priv->hcmd_lock);
9091 spin_lock_init(&priv->lq_mngr.lock);
9092
9093 for (i = 0; i < IWL_IBSS_MAC_HASH_SIZE; i++)
9094 INIT_LIST_HEAD(&priv->ibss_mac_hash[i]);
9095
9096 INIT_LIST_HEAD(&priv->free_frames);
9097
9098 mutex_init(&priv->mutex);
9099 if (pci_enable_device(pdev)) {
9100 err = -ENODEV;
9101 goto out_ieee80211_free_hw;
9102 }
9103
9104 pci_set_master(pdev);
9105
9106 /* Clear the driver's (not device's) station table */
9107 iwl4965_clear_stations_table(priv);
9108
9109 priv->data_retry_limit = -1;
9110 priv->ieee_channels = NULL;
9111 priv->ieee_rates = NULL;
9112 priv->phymode = -1;
9113
9114 err = pci_set_dma_mask(pdev, DMA_32BIT_MASK);
9115 if (!err)
9116 err = pci_set_consistent_dma_mask(pdev, DMA_32BIT_MASK);
9117 if (err) {
9118 printk(KERN_WARNING DRV_NAME ": No suitable DMA available.\n");
9119 goto out_pci_disable_device;
9120 }
9121
9122 pci_set_drvdata(pdev, priv);
9123 err = pci_request_regions(pdev, DRV_NAME);
9124 if (err)
9125 goto out_pci_disable_device;
9126
9127 /* We disable the RETRY_TIMEOUT register (0x41) to keep
9128 * PCI Tx retries from interfering with C3 CPU state */
9129 pci_write_config_byte(pdev, 0x41, 0x00);
9130
9131 priv->hw_base = pci_iomap(pdev, 0, 0);
9132 if (!priv->hw_base) {
9133 err = -ENODEV;
9134 goto out_pci_release_regions;
9135 }
9136
9137 IWL_DEBUG_INFO("pci_resource_len = 0x%08llx\n",
9138 (unsigned long long) pci_resource_len(pdev, 0));
9139 IWL_DEBUG_INFO("pci_resource_base = %p\n", priv->hw_base);
9140
9141 /* Initialize module parameter values here */
9142
9143 /* Disable radio (SW RF KILL) via parameter when loading driver */
9144 if (iwl4965_param_disable) {
9145 set_bit(STATUS_RF_KILL_SW, &priv->status);
9146 IWL_DEBUG_INFO("Radio disabled.\n");
9147 }
9148
9149 priv->iw_mode = IEEE80211_IF_TYPE_STA;
9150
9151 priv->ps_mode = 0;
9152 priv->use_ant_b_for_management_frame = 1; /* start with ant B */
9153 priv->valid_antenna = 0x7; /* assume all 3 connected */
9154 priv->ps_mode = IWL_MIMO_PS_NONE;
9155
9156 /* Choose which receivers/antennas to use */
9157 iwl4965_set_rxon_chain(priv);
9158
9159 printk(KERN_INFO DRV_NAME
9160 ": Detected Intel Wireless WiFi Link 4965AGN\n");
9161
9162 /* Device-specific setup */
9163 if (iwl4965_hw_set_hw_setting(priv)) {
9164 IWL_ERROR("failed to set hw settings\n");
9165 goto out_iounmap;
9166 }
9167
9168 #ifdef CONFIG_IWL4965_QOS
9169 if (iwl4965_param_qos_enable)
9170 priv->qos_data.qos_enable = 1;
9171
9172 iwl4965_reset_qos(priv);
9173
9174 priv->qos_data.qos_active = 0;
9175 priv->qos_data.qos_cap.val = 0;
9176 #endif /* CONFIG_IWL4965_QOS */
9177
9178 iwl4965_set_rxon_channel(priv, MODE_IEEE80211G, 6);
9179 iwl4965_setup_deferred_work(priv);
9180 iwl4965_setup_rx_handlers(priv);
9181
9182 priv->rates_mask = IWL_RATES_MASK;
9183 /* If power management is turned on, default to AC mode */
9184 priv->power_mode = IWL_POWER_AC;
9185 priv->user_txpower_limit = IWL_DEFAULT_TX_POWER;
9186
9187 iwl4965_disable_interrupts(priv);
9188
9189 err = sysfs_create_group(&pdev->dev.kobj, &iwl4965_attribute_group);
9190 if (err) {
9191 IWL_ERROR("failed to create sysfs device attributes\n");
9192 goto out_release_irq;
9193 }
9194
9195 /* nic init */
9196 iwl4965_set_bit(priv, CSR_GIO_CHICKEN_BITS,
9197 CSR_GIO_CHICKEN_BITS_REG_BIT_DIS_L0S_EXIT_TIMER);
9198
9199 iwl4965_set_bit(priv, CSR_GP_CNTRL, CSR_GP_CNTRL_REG_FLAG_INIT_DONE);
9200 err = iwl4965_poll_bit(priv, CSR_GP_CNTRL,
9201 CSR_GP_CNTRL_REG_FLAG_MAC_CLOCK_READY,
9202 CSR_GP_CNTRL_REG_FLAG_MAC_CLOCK_READY, 25000);
9203 if (err < 0) {
9204 IWL_DEBUG_INFO("Failed to init the card\n");
9205 goto out_remove_sysfs;
9206 }
9207 /* Read the EEPROM */
9208 err = iwl4965_eeprom_init(priv);
9209 if (err) {
9210 IWL_ERROR("Unable to init EEPROM\n");
9211 goto out_remove_sysfs;
9212 }
9213 /* MAC Address location in EEPROM same for 3945/4965 */
9214 get_eeprom_mac(priv, priv->mac_addr);
9215 IWL_DEBUG_INFO("MAC address: %s\n", print_mac(mac, priv->mac_addr));
9216 SET_IEEE80211_PERM_ADDR(priv->hw, priv->mac_addr);
9217
9218 err = iwl4965_init_channel_map(priv);
9219 if (err) {
9220 IWL_ERROR("initializing regulatory failed: %d\n", err);
9221 goto out_remove_sysfs;
9222 }
9223
9224 err = iwl4965_init_geos(priv);
9225 if (err) {
9226 IWL_ERROR("initializing geos failed: %d\n", err);
9227 goto out_free_channel_map;
9228 }
9229 iwl4965_reset_channel_flag(priv);
9230
9231 iwl4965_rate_control_register(priv->hw);
9232 err = ieee80211_register_hw(priv->hw);
9233 if (err) {
9234 IWL_ERROR("Failed to register network device (error %d)\n", err);
9235 goto out_free_geos;
9236 }
9237
9238 priv->hw->conf.beacon_int = 100;
9239 priv->mac80211_registered = 1;
9240 pci_save_state(pdev);
9241 pci_disable_device(pdev);
9242
9243 return 0;
9244
9245 out_free_geos:
9246 iwl4965_free_geos(priv);
9247 out_free_channel_map:
9248 iwl4965_free_channel_map(priv);
9249 out_remove_sysfs:
9250 sysfs_remove_group(&pdev->dev.kobj, &iwl4965_attribute_group);
9251
9252 out_release_irq:
9253 destroy_workqueue(priv->workqueue);
9254 priv->workqueue = NULL;
9255 iwl4965_unset_hw_setting(priv);
9256
9257 out_iounmap:
9258 pci_iounmap(pdev, priv->hw_base);
9259 out_pci_release_regions:
9260 pci_release_regions(pdev);
9261 out_pci_disable_device:
9262 pci_disable_device(pdev);
9263 pci_set_drvdata(pdev, NULL);
9264 out_ieee80211_free_hw:
9265 ieee80211_free_hw(priv->hw);
9266 out:
9267 return err;
9268 }
9269
9270 static void iwl4965_pci_remove(struct pci_dev *pdev)
9271 {
9272 struct iwl4965_priv *priv = pci_get_drvdata(pdev);
9273 struct list_head *p, *q;
9274 int i;
9275
9276 if (!priv)
9277 return;
9278
9279 IWL_DEBUG_INFO("*** UNLOAD DRIVER ***\n");
9280
9281 set_bit(STATUS_EXIT_PENDING, &priv->status);
9282
9283 iwl4965_down(priv);
9284
9285 /* Free MAC hash list for ADHOC */
9286 for (i = 0; i < IWL_IBSS_MAC_HASH_SIZE; i++) {
9287 list_for_each_safe(p, q, &priv->ibss_mac_hash[i]) {
9288 list_del(p);
9289 kfree(list_entry(p, struct iwl4965_ibss_seq, list));
9290 }
9291 }
9292
9293 sysfs_remove_group(&pdev->dev.kobj, &iwl4965_attribute_group);
9294
9295 iwl4965_dealloc_ucode_pci(priv);
9296
9297 if (priv->rxq.bd)
9298 iwl4965_rx_queue_free(priv, &priv->rxq);
9299 iwl4965_hw_txq_ctx_free(priv);
9300
9301 iwl4965_unset_hw_setting(priv);
9302 iwl4965_clear_stations_table(priv);
9303
9304 if (priv->mac80211_registered) {
9305 ieee80211_unregister_hw(priv->hw);
9306 iwl4965_rate_control_unregister(priv->hw);
9307 }
9308
9309 /*netif_stop_queue(dev); */
9310 flush_workqueue(priv->workqueue);
9311
9312 /* ieee80211_unregister_hw calls iwl4965_mac_stop, which flushes
9313 * priv->workqueue... so we can't take down the workqueue
9314 * until now... */
9315 destroy_workqueue(priv->workqueue);
9316 priv->workqueue = NULL;
9317
9318 pci_iounmap(pdev, priv->hw_base);
9319 pci_release_regions(pdev);
9320 pci_disable_device(pdev);
9321 pci_set_drvdata(pdev, NULL);
9322
9323 iwl4965_free_channel_map(priv);
9324 iwl4965_free_geos(priv);
9325
9326 if (priv->ibss_beacon)
9327 dev_kfree_skb(priv->ibss_beacon);
9328
9329 ieee80211_free_hw(priv->hw);
9330 }
9331
9332 #ifdef CONFIG_PM
9333
9334 static int iwl4965_pci_suspend(struct pci_dev *pdev, pm_message_t state)
9335 {
9336 struct iwl4965_priv *priv = pci_get_drvdata(pdev);
9337
9338 if (priv->is_open) {
9339 set_bit(STATUS_IN_SUSPEND, &priv->status);
9340 iwl4965_mac_stop(priv->hw);
9341 priv->is_open = 1;
9342 }
9343
9344 pci_set_power_state(pdev, PCI_D3hot);
9345
9346 return 0;
9347 }
9348
9349 static int iwl4965_pci_resume(struct pci_dev *pdev)
9350 {
9351 struct iwl4965_priv *priv = pci_get_drvdata(pdev);
9352
9353 pci_set_power_state(pdev, PCI_D0);
9354
9355 if (priv->is_open)
9356 iwl4965_mac_start(priv->hw);
9357
9358 clear_bit(STATUS_IN_SUSPEND, &priv->status);
9359 return 0;
9360 }
9361
9362 #endif /* CONFIG_PM */
9363
9364 /*****************************************************************************
9365 *
9366 * driver and module entry point
9367 *
9368 *****************************************************************************/
9369
9370 static struct pci_driver iwl4965_driver = {
9371 .name = DRV_NAME,
9372 .id_table = iwl4965_hw_card_ids,
9373 .probe = iwl4965_pci_probe,
9374 .remove = __devexit_p(iwl4965_pci_remove),
9375 #ifdef CONFIG_PM
9376 .suspend = iwl4965_pci_suspend,
9377 .resume = iwl4965_pci_resume,
9378 #endif
9379 };
9380
9381 static int __init iwl4965_init(void)
9382 {
9383
9384 int ret;
9385 printk(KERN_INFO DRV_NAME ": " DRV_DESCRIPTION ", " DRV_VERSION "\n");
9386 printk(KERN_INFO DRV_NAME ": " DRV_COPYRIGHT "\n");
9387 ret = pci_register_driver(&iwl4965_driver);
9388 if (ret) {
9389 IWL_ERROR("Unable to initialize PCI module\n");
9390 return ret;
9391 }
9392 #ifdef CONFIG_IWL4965_DEBUG
9393 ret = driver_create_file(&iwl4965_driver.driver, &driver_attr_debug_level);
9394 if (ret) {
9395 IWL_ERROR("Unable to create driver sysfs file\n");
9396 pci_unregister_driver(&iwl4965_driver);
9397 return ret;
9398 }
9399 #endif
9400
9401 return ret;
9402 }
9403
9404 static void __exit iwl4965_exit(void)
9405 {
9406 #ifdef CONFIG_IWL4965_DEBUG
9407 driver_remove_file(&iwl4965_driver.driver, &driver_attr_debug_level);
9408 #endif
9409 pci_unregister_driver(&iwl4965_driver);
9410 }
9411
9412 module_param_named(antenna, iwl4965_param_antenna, int, 0444);
9413 MODULE_PARM_DESC(antenna, "select antenna (1=Main, 2=Aux, default 0 [both])");
9414 module_param_named(disable, iwl4965_param_disable, int, 0444);
9415 MODULE_PARM_DESC(disable, "manually disable the radio (default 0 [radio on])");
9416 module_param_named(hwcrypto, iwl4965_param_hwcrypto, int, 0444);
9417 MODULE_PARM_DESC(hwcrypto,
9418 "using hardware crypto engine (default 0 [software])\n");
9419 module_param_named(debug, iwl4965_param_debug, int, 0444);
9420 MODULE_PARM_DESC(debug, "debug output mask");
9421 module_param_named(disable_hw_scan, iwl4965_param_disable_hw_scan, int, 0444);
9422 MODULE_PARM_DESC(disable_hw_scan, "disable hardware scanning (default 0)");
9423
9424 module_param_named(queues_num, iwl4965_param_queues_num, int, 0444);
9425 MODULE_PARM_DESC(queues_num, "number of hw queues.");
9426
9427 /* QoS */
9428 module_param_named(qos_enable, iwl4965_param_qos_enable, int, 0444);
9429 MODULE_PARM_DESC(qos_enable, "enable all QoS functionality");
9430 module_param_named(amsdu_size_8K, iwl4965_param_amsdu_size_8K, int, 0444);
9431 MODULE_PARM_DESC(amsdu_size_8K, "enable 8K amsdu size");
9432
9433 module_exit(iwl4965_exit);
9434 module_init(iwl4965_init);