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CPU HOTPLUG: avoid hotadd when proper possible_map isn't specified
[linux-2.6/mini2440.git] / drivers / net / wireless / iwlwifi / iwl4965-base.c
blobb1a6e39f7821d9cd5888d905737d168856ada18a
1 /******************************************************************************
2 *
3 * Copyright(c) 2003 - 2007 Intel Corporation. All rights reserved.
4 *
5 * Portions of this file are derived from the ipw3945 project, as well
6 * as portions of the ieee80211 subsystem header files.
7 *
8 * This program is free software; you can redistribute it and/or modify it
9 * under the terms of version 2 of the GNU General Public License as
10 * published by the Free Software Foundation.
11 *
12 * This program is distributed in the hope that it will be useful, but WITHOUT
13 * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
14 * FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License for
15 * more details.
16 *
17 * You should have received a copy of the GNU General Public License along with
18 * this program; if not, write to the Free Software Foundation, Inc.,
19 * 51 Franklin Street, Fifth Floor, Boston, MA 02110, USA
20 *
21 * The full GNU General Public License is included in this distribution in the
22 * file called LICENSE.
23 *
24 * Contact Information:
25 * James P. Ketrenos <ipw2100-admin@linux.intel.com>
26 * Intel Corporation, 5200 N.E. Elam Young Parkway, Hillsboro, OR 97124-6497
27 *
28 *****************************************************************************/
29
30 /*
31 * NOTE: This file (iwl-base.c) is used to build to multiple hardware targets
32 * by defining IWL to either 3945 or 4965. The Makefile used when building
33 * the base targets will create base-3945.o and base-4965.o
34 *
35 * The eventual goal is to move as many of the #if IWL / #endif blocks out of
36 * this file and into the hardware specific implementation files (iwl-XXXX.c)
37 * and leave only the common (non #ifdef sprinkled) code in this file
38 */
39
40 #include <linux/kernel.h>
41 #include <linux/module.h>
42 #include <linux/version.h>
43 #include <linux/init.h>
44 #include <linux/pci.h>
45 #include <linux/dma-mapping.h>
46 #include <linux/delay.h>
47 #include <linux/skbuff.h>
48 #include <linux/netdevice.h>
49 #include <linux/wireless.h>
50 #include <linux/firmware.h>
51 #include <linux/skbuff.h>
52 #include <linux/netdevice.h>
53 #include <linux/etherdevice.h>
54 #include <linux/if_arp.h>
55
56 #include <net/ieee80211_radiotap.h>
57 #include <net/mac80211.h>
58
59 #include <asm/div64.h>
60
61 #define IWL 4965
62
63 #include "iwlwifi.h"
64 #include "iwl-4965.h"
65 #include "iwl-helpers.h"
66
67 #ifdef CONFIG_IWLWIFI_DEBUG
68 u32 iwl_debug_level;
69 #endif
70
71 /******************************************************************************
72 *
73 * module boiler plate
74 *
75 ******************************************************************************/
76
77 /* module parameters */
78 int iwl_param_disable_hw_scan;
79 int iwl_param_debug;
80 int iwl_param_disable; /* def: enable radio */
81 int iwl_param_antenna; /* def: 0 = both antennas (use diversity) */
82 int iwl_param_hwcrypto; /* def: using software encryption */
83 int iwl_param_qos_enable = 1;
84 int iwl_param_queues_num = IWL_MAX_NUM_QUEUES;
85
86 /*
87 * module name, copyright, version, etc.
88 * NOTE: DRV_NAME is defined in iwlwifi.h for use by iwl-debug.h and printk
89 */
90
91 #define DRV_DESCRIPTION "Intel(R) Wireless WiFi Link 4965AGN driver for Linux"
92
93 #ifdef CONFIG_IWLWIFI_DEBUG
94 #define VD "d"
95 #else
96 #define VD
97 #endif
98
99 #ifdef CONFIG_IWLWIFI_SPECTRUM_MEASUREMENT
100 #define VS "s"
101 #else
102 #define VS
103 #endif
104
105 #define IWLWIFI_VERSION "1.1.17k" VD VS
106 #define DRV_COPYRIGHT "Copyright(c) 2003-2007 Intel Corporation"
107 #define DRV_VERSION IWLWIFI_VERSION
108
109 /* Change firmware file name, using "-" and incrementing number,
110 * *only* when uCode interface or architecture changes so that it
111 * is not compatible with earlier drivers.
112 * This number will also appear in << 8 position of 1st dword of uCode file */
113 #define IWL4965_UCODE_API "-1"
114
115 MODULE_DESCRIPTION(DRV_DESCRIPTION);
116 MODULE_VERSION(DRV_VERSION);
117 MODULE_AUTHOR(DRV_COPYRIGHT);
118 MODULE_LICENSE("GPL");
119
120 __le16 *ieee80211_get_qos_ctrl(struct ieee80211_hdr *hdr)
121 {
122 u16 fc = le16_to_cpu(hdr->frame_control);
123 int hdr_len = ieee80211_get_hdrlen(fc);
124
125 if ((fc & 0x00cc) == (IEEE80211_STYPE_QOS_DATA | IEEE80211_FTYPE_DATA))
126 return (__le16 *) ((u8 *) hdr + hdr_len - QOS_CONTROL_LEN);
127 return NULL;
128 }
129
130 static const struct ieee80211_hw_mode *iwl_get_hw_mode(
131 struct iwl_priv *priv, int mode)
132 {
133 int i;
134
135 for (i = 0; i < 3; i++)
136 if (priv->modes[i].mode == mode)
137 return &priv->modes[i];
138
139 return NULL;
140 }
141
142 static int iwl_is_empty_essid(const char *essid, int essid_len)
143 {
144 /* Single white space is for Linksys APs */
145 if (essid_len == 1 && essid[0] == ' ')
146 return 1;
147
148 /* Otherwise, if the entire essid is 0, we assume it is hidden */
149 while (essid_len) {
150 essid_len--;
151 if (essid[essid_len] != '\0')
152 return 0;
153 }
154
155 return 1;
156 }
157
158 static const char *iwl_escape_essid(const char *essid, u8 essid_len)
159 {
160 static char escaped[IW_ESSID_MAX_SIZE * 2 + 1];
161 const char *s = essid;
162 char *d = escaped;
163
164 if (iwl_is_empty_essid(essid, essid_len)) {
165 memcpy(escaped, "<hidden>", sizeof("<hidden>"));
166 return escaped;
167 }
168
169 essid_len = min(essid_len, (u8) IW_ESSID_MAX_SIZE);
170 while (essid_len--) {
171 if (*s == '\0') {
172 *d++ = '\\';
173 *d++ = '0';
174 s++;
175 } else
176 *d++ = *s++;
177 }
178 *d = '\0';
179 return escaped;
180 }
181
182 static void iwl_print_hex_dump(int level, void *p, u32 len)
183 {
184 #ifdef CONFIG_IWLWIFI_DEBUG
185 if (!(iwl_debug_level & level))
186 return;
187
188 print_hex_dump(KERN_DEBUG, "iwl data: ", DUMP_PREFIX_OFFSET, 16, 1,
189 p, len, 1);
190 #endif
191 }
192
193 /*************** DMA-QUEUE-GENERAL-FUNCTIONS *****
194 * DMA services
195 *
196 * Theory of operation
197 *
198 * A queue is a circular buffers with 'Read' and 'Write' pointers.
199 * 2 empty entries always kept in the buffer to protect from overflow.
200 *
201 * For Tx queue, there are low mark and high mark limits. If, after queuing
202 * the packet for Tx, free space become < low mark, Tx queue stopped. When
203 * reclaiming packets (on 'tx done IRQ), if free space become > high mark,
204 * Tx queue resumed.
205 *
206 * The IWL operates with six queues, one receive queue in the device's
207 * sram, one transmit queue for sending commands to the device firmware,
208 * and four transmit queues for data.
209 ***************************************************/
210
211 static int iwl_queue_space(const struct iwl_queue *q)
212 {
213 int s = q->last_used - q->first_empty;
214
215 if (q->last_used > q->first_empty)
216 s -= q->n_bd;
217
218 if (s <= 0)
219 s += q->n_window;
220 /* keep some reserve to not confuse empty and full situations */
221 s -= 2;
222 if (s < 0)
223 s = 0;
224 return s;
225 }
226
227 /* XXX: n_bd must be power-of-two size */
228 static inline int iwl_queue_inc_wrap(int index, int n_bd)
229 {
230 return ++index & (n_bd - 1);
231 }
232
233 /* XXX: n_bd must be power-of-two size */
234 static inline int iwl_queue_dec_wrap(int index, int n_bd)
235 {
236 return --index & (n_bd - 1);
237 }
238
239 static inline int x2_queue_used(const struct iwl_queue *q, int i)
240 {
241 return q->first_empty > q->last_used ?
242 (i >= q->last_used && i < q->first_empty) :
243 !(i < q->last_used && i >= q->first_empty);
244 }
245
246 static inline u8 get_cmd_index(struct iwl_queue *q, u32 index, int is_huge)
247 {
248 if (is_huge)
249 return q->n_window;
250
251 return index & (q->n_window - 1);
252 }
253
254 static int iwl_queue_init(struct iwl_priv *priv, struct iwl_queue *q,
255 int count, int slots_num, u32 id)
256 {
257 q->n_bd = count;
258 q->n_window = slots_num;
259 q->id = id;
260
261 /* count must be power-of-two size, otherwise iwl_queue_inc_wrap
262 * and iwl_queue_dec_wrap are broken. */
263 BUG_ON(!is_power_of_2(count));
264
265 /* slots_num must be power-of-two size, otherwise
266 * get_cmd_index is broken. */
267 BUG_ON(!is_power_of_2(slots_num));
268
269 q->low_mark = q->n_window / 4;
270 if (q->low_mark < 4)
271 q->low_mark = 4;
272
273 q->high_mark = q->n_window / 8;
274 if (q->high_mark < 2)
275 q->high_mark = 2;
276
277 q->first_empty = q->last_used = 0;
278
279 return 0;
280 }
281
282 static int iwl_tx_queue_alloc(struct iwl_priv *priv,
283 struct iwl_tx_queue *txq, u32 id)
284 {
285 struct pci_dev *dev = priv->pci_dev;
286
287 if (id != IWL_CMD_QUEUE_NUM) {
288 txq->txb = kmalloc(sizeof(txq->txb[0]) *
289 TFD_QUEUE_SIZE_MAX, GFP_KERNEL);
290 if (!txq->txb) {
291 IWL_ERROR("kmalloc for auxilary BD "
292 "structures failed\n");
293 goto error;
294 }
295 } else
296 txq->txb = NULL;
297
298 txq->bd = pci_alloc_consistent(dev,
299 sizeof(txq->bd[0]) * TFD_QUEUE_SIZE_MAX,
300 &txq->q.dma_addr);
301
302 if (!txq->bd) {
303 IWL_ERROR("pci_alloc_consistent(%zd) failed\n",
304 sizeof(txq->bd[0]) * TFD_QUEUE_SIZE_MAX);
305 goto error;
306 }
307 txq->q.id = id;
308
309 return 0;
310
311 error:
312 if (txq->txb) {
313 kfree(txq->txb);
314 txq->txb = NULL;
315 }
316
317 return -ENOMEM;
318 }
319
320 int iwl_tx_queue_init(struct iwl_priv *priv,
321 struct iwl_tx_queue *txq, int slots_num, u32 txq_id)
322 {
323 struct pci_dev *dev = priv->pci_dev;
324 int len;
325 int rc = 0;
326
327 /* alocate command space + one big command for scan since scan
328 * command is very huge the system will not have two scan at the
329 * same time */
330 len = sizeof(struct iwl_cmd) * slots_num;
331 if (txq_id == IWL_CMD_QUEUE_NUM)
332 len += IWL_MAX_SCAN_SIZE;
333 txq->cmd = pci_alloc_consistent(dev, len, &txq->dma_addr_cmd);
334 if (!txq->cmd)
335 return -ENOMEM;
336
337 rc = iwl_tx_queue_alloc(priv, txq, txq_id);
338 if (rc) {
339 pci_free_consistent(dev, len, txq->cmd, txq->dma_addr_cmd);
340
341 return -ENOMEM;
342 }
343 txq->need_update = 0;
344
345 /* TFD_QUEUE_SIZE_MAX must be power-of-two size, otherwise
346 * iwl_queue_inc_wrap and iwl_queue_dec_wrap are broken. */
347 BUILD_BUG_ON(TFD_QUEUE_SIZE_MAX & (TFD_QUEUE_SIZE_MAX - 1));
348 iwl_queue_init(priv, &txq->q, TFD_QUEUE_SIZE_MAX, slots_num, txq_id);
349
350 iwl_hw_tx_queue_init(priv, txq);
351
352 return 0;
353 }
354
355 /**
356 * iwl_tx_queue_free - Deallocate DMA queue.
357 * @txq: Transmit queue to deallocate.
358 *
359 * Empty queue by removing and destroying all BD's.
360 * Free all buffers. txq itself is not freed.
361 *
362 */
363 void iwl_tx_queue_free(struct iwl_priv *priv, struct iwl_tx_queue *txq)
364 {
365 struct iwl_queue *q = &txq->q;
366 struct pci_dev *dev = priv->pci_dev;
367 int len;
368
369 if (q->n_bd == 0)
370 return;
371
372 /* first, empty all BD's */
373 for (; q->first_empty != q->last_used;
374 q->last_used = iwl_queue_inc_wrap(q->last_used, q->n_bd))
375 iwl_hw_txq_free_tfd(priv, txq);
376
377 len = sizeof(struct iwl_cmd) * q->n_window;
378 if (q->id == IWL_CMD_QUEUE_NUM)
379 len += IWL_MAX_SCAN_SIZE;
380
381 pci_free_consistent(dev, len, txq->cmd, txq->dma_addr_cmd);
382
383 /* free buffers belonging to queue itself */
384 if (txq->q.n_bd)
385 pci_free_consistent(dev, sizeof(struct iwl_tfd_frame) *
386 txq->q.n_bd, txq->bd, txq->q.dma_addr);
387
388 if (txq->txb) {
389 kfree(txq->txb);
390 txq->txb = NULL;
391 }
392
393 /* 0 fill whole structure */
394 memset(txq, 0, sizeof(*txq));
395 }
396
397 const u8 BROADCAST_ADDR[ETH_ALEN] = { 0xFF, 0xFF, 0xFF, 0xFF, 0xFF, 0xFF };
398
399 /*************** STATION TABLE MANAGEMENT ****
400 *
401 * NOTE: This needs to be overhauled to better synchronize between
402 * how the iwl-4965.c is using iwl_hw_find_station vs. iwl-3945.c
403 *
404 * mac80211 should also be examined to determine if sta_info is duplicating
405 * the functionality provided here
406 */
407
408 /**************************************************************/
409
410 #if 0 /* temparary disable till we add real remove station */
411 static u8 iwl_remove_station(struct iwl_priv *priv, const u8 *addr, int is_ap)
412 {
413 int index = IWL_INVALID_STATION;
414 int i;
415 unsigned long flags;
416
417 spin_lock_irqsave(&priv->sta_lock, flags);
418
419 if (is_ap)
420 index = IWL_AP_ID;
421 else if (is_broadcast_ether_addr(addr))
422 index = priv->hw_setting.bcast_sta_id;
423 else
424 for (i = IWL_STA_ID; i < priv->hw_setting.max_stations; i++)
425 if (priv->stations[i].used &&
426 !compare_ether_addr(priv->stations[i].sta.sta.addr,
427 addr)) {
428 index = i;
429 break;
430 }
431
432 if (unlikely(index == IWL_INVALID_STATION))
433 goto out;
434
435 if (priv->stations[index].used) {
436 priv->stations[index].used = 0;
437 priv->num_stations--;
438 }
439
440 BUG_ON(priv->num_stations < 0);
441
442 out:
443 spin_unlock_irqrestore(&priv->sta_lock, flags);
444 return 0;
445 }
446 #endif
447
448 static void iwl_clear_stations_table(struct iwl_priv *priv)
449 {
450 unsigned long flags;
451
452 spin_lock_irqsave(&priv->sta_lock, flags);
453
454 priv->num_stations = 0;
455 memset(priv->stations, 0, sizeof(priv->stations));
456
457 spin_unlock_irqrestore(&priv->sta_lock, flags);
458 }
459
460 u8 iwl_add_station(struct iwl_priv *priv, const u8 *addr, int is_ap, u8 flags)
461 {
462 int i;
463 int index = IWL_INVALID_STATION;
464 struct iwl_station_entry *station;
465 unsigned long flags_spin;
466 DECLARE_MAC_BUF(mac);
467
468 spin_lock_irqsave(&priv->sta_lock, flags_spin);
469 if (is_ap)
470 index = IWL_AP_ID;
471 else if (is_broadcast_ether_addr(addr))
472 index = priv->hw_setting.bcast_sta_id;
473 else
474 for (i = IWL_STA_ID; i < priv->hw_setting.max_stations; i++) {
475 if (!compare_ether_addr(priv->stations[i].sta.sta.addr,
476 addr)) {
477 index = i;
478 break;
479 }
480
481 if (!priv->stations[i].used &&
482 index == IWL_INVALID_STATION)
483 index = i;
484 }
485
486
487 /* These twh conditions has the same outcome but keep them separate
488 since they have different meaning */
489 if (unlikely(index == IWL_INVALID_STATION)) {
490 spin_unlock_irqrestore(&priv->sta_lock, flags_spin);
491 return index;
492 }
493
494 if (priv->stations[index].used &&
495 !compare_ether_addr(priv->stations[index].sta.sta.addr, addr)) {
496 spin_unlock_irqrestore(&priv->sta_lock, flags_spin);
497 return index;
498 }
499
500
501 IWL_DEBUG_ASSOC("Add STA ID %d: %s\n", index, print_mac(mac, addr));
502 station = &priv->stations[index];
503 station->used = 1;
504 priv->num_stations++;
505
506 memset(&station->sta, 0, sizeof(struct iwl_addsta_cmd));
507 memcpy(station->sta.sta.addr, addr, ETH_ALEN);
508 station->sta.mode = 0;
509 station->sta.sta.sta_id = index;
510 station->sta.station_flags = 0;
511
512 #ifdef CONFIG_IWLWIFI_HT
513 /* BCAST station and IBSS stations do not work in HT mode */
514 if (index != priv->hw_setting.bcast_sta_id &&
515 priv->iw_mode != IEEE80211_IF_TYPE_IBSS)
516 iwl4965_set_ht_add_station(priv, index);
517 #endif /*CONFIG_IWLWIFI_HT*/
518
519 spin_unlock_irqrestore(&priv->sta_lock, flags_spin);
520 iwl_send_add_station(priv, &station->sta, flags);
521 return index;
522
523 }
524
525 /*************** DRIVER STATUS FUNCTIONS *****/
526
527 static inline int iwl_is_ready(struct iwl_priv *priv)
528 {
529 /* The adapter is 'ready' if READY and GEO_CONFIGURED bits are
530 * set but EXIT_PENDING is not */
531 return test_bit(STATUS_READY, &priv->status) &&
532 test_bit(STATUS_GEO_CONFIGURED, &priv->status) &&
533 !test_bit(STATUS_EXIT_PENDING, &priv->status);
534 }
535
536 static inline int iwl_is_alive(struct iwl_priv *priv)
537 {
538 return test_bit(STATUS_ALIVE, &priv->status);
539 }
540
541 static inline int iwl_is_init(struct iwl_priv *priv)
542 {
543 return test_bit(STATUS_INIT, &priv->status);
544 }
545
546 static inline int iwl_is_rfkill(struct iwl_priv *priv)
547 {
548 return test_bit(STATUS_RF_KILL_HW, &priv->status) ||
549 test_bit(STATUS_RF_KILL_SW, &priv->status);
550 }
551
552 static inline int iwl_is_ready_rf(struct iwl_priv *priv)
553 {
554
555 if (iwl_is_rfkill(priv))
556 return 0;
557
558 return iwl_is_ready(priv);
559 }
560
561 /*************** HOST COMMAND QUEUE FUNCTIONS *****/
562
563 #define IWL_CMD(x) case x : return #x
564
565 static const char *get_cmd_string(u8 cmd)
566 {
567 switch (cmd) {
568 IWL_CMD(REPLY_ALIVE);
569 IWL_CMD(REPLY_ERROR);
570 IWL_CMD(REPLY_RXON);
571 IWL_CMD(REPLY_RXON_ASSOC);
572 IWL_CMD(REPLY_QOS_PARAM);
573 IWL_CMD(REPLY_RXON_TIMING);
574 IWL_CMD(REPLY_ADD_STA);
575 IWL_CMD(REPLY_REMOVE_STA);
576 IWL_CMD(REPLY_REMOVE_ALL_STA);
577 IWL_CMD(REPLY_TX);
578 IWL_CMD(REPLY_RATE_SCALE);
579 IWL_CMD(REPLY_LEDS_CMD);
580 IWL_CMD(REPLY_TX_LINK_QUALITY_CMD);
581 IWL_CMD(RADAR_NOTIFICATION);
582 IWL_CMD(REPLY_QUIET_CMD);
583 IWL_CMD(REPLY_CHANNEL_SWITCH);
584 IWL_CMD(CHANNEL_SWITCH_NOTIFICATION);
585 IWL_CMD(REPLY_SPECTRUM_MEASUREMENT_CMD);
586 IWL_CMD(SPECTRUM_MEASURE_NOTIFICATION);
587 IWL_CMD(POWER_TABLE_CMD);
588 IWL_CMD(PM_SLEEP_NOTIFICATION);
589 IWL_CMD(PM_DEBUG_STATISTIC_NOTIFIC);
590 IWL_CMD(REPLY_SCAN_CMD);
591 IWL_CMD(REPLY_SCAN_ABORT_CMD);
592 IWL_CMD(SCAN_START_NOTIFICATION);
593 IWL_CMD(SCAN_RESULTS_NOTIFICATION);
594 IWL_CMD(SCAN_COMPLETE_NOTIFICATION);
595 IWL_CMD(BEACON_NOTIFICATION);
596 IWL_CMD(REPLY_TX_BEACON);
597 IWL_CMD(WHO_IS_AWAKE_NOTIFICATION);
598 IWL_CMD(QUIET_NOTIFICATION);
599 IWL_CMD(REPLY_TX_PWR_TABLE_CMD);
600 IWL_CMD(MEASURE_ABORT_NOTIFICATION);
601 IWL_CMD(REPLY_BT_CONFIG);
602 IWL_CMD(REPLY_STATISTICS_CMD);
603 IWL_CMD(STATISTICS_NOTIFICATION);
604 IWL_CMD(REPLY_CARD_STATE_CMD);
605 IWL_CMD(CARD_STATE_NOTIFICATION);
606 IWL_CMD(MISSED_BEACONS_NOTIFICATION);
607 IWL_CMD(REPLY_CT_KILL_CONFIG_CMD);
608 IWL_CMD(SENSITIVITY_CMD);
609 IWL_CMD(REPLY_PHY_CALIBRATION_CMD);
610 IWL_CMD(REPLY_RX_PHY_CMD);
611 IWL_CMD(REPLY_RX_MPDU_CMD);
612 IWL_CMD(REPLY_4965_RX);
613 IWL_CMD(REPLY_COMPRESSED_BA);
614 default:
615 return "UNKNOWN";
616
617 }
618 }
619
620 #define HOST_COMPLETE_TIMEOUT (HZ / 2)
621
622 /**
623 * iwl_enqueue_hcmd - enqueue a uCode command
624 * @priv: device private data point
625 * @cmd: a point to the ucode command structure
626 *
627 * The function returns < 0 values to indicate the operation is
628 * failed. On success, it turns the index (> 0) of command in the
629 * command queue.
630 */
631 static int iwl_enqueue_hcmd(struct iwl_priv *priv, struct iwl_host_cmd *cmd)
632 {
633 struct iwl_tx_queue *txq = &priv->txq[IWL_CMD_QUEUE_NUM];
634 struct iwl_queue *q = &txq->q;
635 struct iwl_tfd_frame *tfd;
636 u32 *control_flags;
637 struct iwl_cmd *out_cmd;
638 u32 idx;
639 u16 fix_size = (u16)(cmd->len + sizeof(out_cmd->hdr));
640 dma_addr_t phys_addr;
641 int ret;
642 unsigned long flags;
643
644 /* If any of the command structures end up being larger than
645 * the TFD_MAX_PAYLOAD_SIZE, and it sent as a 'small' command then
646 * we will need to increase the size of the TFD entries */
647 BUG_ON((fix_size > TFD_MAX_PAYLOAD_SIZE) &&
648 !(cmd->meta.flags & CMD_SIZE_HUGE));
649
650 if (iwl_queue_space(q) < ((cmd->meta.flags & CMD_ASYNC) ? 2 : 1)) {
651 IWL_ERROR("No space for Tx\n");
652 return -ENOSPC;
653 }
654
655 spin_lock_irqsave(&priv->hcmd_lock, flags);
656
657 tfd = &txq->bd[q->first_empty];
658 memset(tfd, 0, sizeof(*tfd));
659
660 control_flags = (u32 *) tfd;
661
662 idx = get_cmd_index(q, q->first_empty, cmd->meta.flags & CMD_SIZE_HUGE);
663 out_cmd = &txq->cmd[idx];
664
665 out_cmd->hdr.cmd = cmd->id;
666 memcpy(&out_cmd->meta, &cmd->meta, sizeof(cmd->meta));
667 memcpy(&out_cmd->cmd.payload, cmd->data, cmd->len);
668
669 /* At this point, the out_cmd now has all of the incoming cmd
670 * information */
671
672 out_cmd->hdr.flags = 0;
673 out_cmd->hdr.sequence = cpu_to_le16(QUEUE_TO_SEQ(IWL_CMD_QUEUE_NUM) |
674 INDEX_TO_SEQ(q->first_empty));
675 if (out_cmd->meta.flags & CMD_SIZE_HUGE)
676 out_cmd->hdr.sequence |= cpu_to_le16(SEQ_HUGE_FRAME);
677
678 phys_addr = txq->dma_addr_cmd + sizeof(txq->cmd[0]) * idx +
679 offsetof(struct iwl_cmd, hdr);
680 iwl_hw_txq_attach_buf_to_tfd(priv, tfd, phys_addr, fix_size);
681
682 IWL_DEBUG_HC("Sending command %s (#%x), seq: 0x%04X, "
683 "%d bytes at %d[%d]:%d\n",
684 get_cmd_string(out_cmd->hdr.cmd),
685 out_cmd->hdr.cmd, le16_to_cpu(out_cmd->hdr.sequence),
686 fix_size, q->first_empty, idx, IWL_CMD_QUEUE_NUM);
687
688 txq->need_update = 1;
689 ret = iwl4965_tx_queue_update_wr_ptr(priv, txq, 0);
690 q->first_empty = iwl_queue_inc_wrap(q->first_empty, q->n_bd);
691 iwl_tx_queue_update_write_ptr(priv, txq);
692
693 spin_unlock_irqrestore(&priv->hcmd_lock, flags);
694 return ret ? ret : idx;
695 }
696
697 int iwl_send_cmd_async(struct iwl_priv *priv, struct iwl_host_cmd *cmd)
698 {
699 int ret;
700
701 BUG_ON(!(cmd->meta.flags & CMD_ASYNC));
702
703 /* An asynchronous command can not expect an SKB to be set. */
704 BUG_ON(cmd->meta.flags & CMD_WANT_SKB);
705
706 /* An asynchronous command MUST have a callback. */
707 BUG_ON(!cmd->meta.u.callback);
708
709 if (test_bit(STATUS_EXIT_PENDING, &priv->status))
710 return -EBUSY;
711
712 ret = iwl_enqueue_hcmd(priv, cmd);
713 if (ret < 0) {
714 IWL_ERROR("Error sending %s: iwl_enqueue_hcmd failed: %d\n",
715 get_cmd_string(cmd->id), ret);
716 return ret;
717 }
718 return 0;
719 }
720
721 int iwl_send_cmd_sync(struct iwl_priv *priv, struct iwl_host_cmd *cmd)
722 {
723 int cmd_idx;
724 int ret;
725 static atomic_t entry = ATOMIC_INIT(0); /* reentrance protection */
726
727 BUG_ON(cmd->meta.flags & CMD_ASYNC);
728
729 /* A synchronous command can not have a callback set. */
730 BUG_ON(cmd->meta.u.callback != NULL);
731
732 if (atomic_xchg(&entry, 1)) {
733 IWL_ERROR("Error sending %s: Already sending a host command\n",
734 get_cmd_string(cmd->id));
735 return -EBUSY;
736 }
737
738 set_bit(STATUS_HCMD_ACTIVE, &priv->status);
739
740 if (cmd->meta.flags & CMD_WANT_SKB)
741 cmd->meta.source = &cmd->meta;
742
743 cmd_idx = iwl_enqueue_hcmd(priv, cmd);
744 if (cmd_idx < 0) {
745 ret = cmd_idx;
746 IWL_ERROR("Error sending %s: iwl_enqueue_hcmd failed: %d\n",
747 get_cmd_string(cmd->id), ret);
748 goto out;
749 }
750
751 ret = wait_event_interruptible_timeout(priv->wait_command_queue,
752 !test_bit(STATUS_HCMD_ACTIVE, &priv->status),
753 HOST_COMPLETE_TIMEOUT);
754 if (!ret) {
755 if (test_bit(STATUS_HCMD_ACTIVE, &priv->status)) {
756 IWL_ERROR("Error sending %s: time out after %dms.\n",
757 get_cmd_string(cmd->id),
758 jiffies_to_msecs(HOST_COMPLETE_TIMEOUT));
759
760 clear_bit(STATUS_HCMD_ACTIVE, &priv->status);
761 ret = -ETIMEDOUT;
762 goto cancel;
763 }
764 }
765
766 if (test_bit(STATUS_RF_KILL_HW, &priv->status)) {
767 IWL_DEBUG_INFO("Command %s aborted: RF KILL Switch\n",
768 get_cmd_string(cmd->id));
769 ret = -ECANCELED;
770 goto fail;
771 }
772 if (test_bit(STATUS_FW_ERROR, &priv->status)) {
773 IWL_DEBUG_INFO("Command %s failed: FW Error\n",
774 get_cmd_string(cmd->id));
775 ret = -EIO;
776 goto fail;
777 }
778 if ((cmd->meta.flags & CMD_WANT_SKB) && !cmd->meta.u.skb) {
779 IWL_ERROR("Error: Response NULL in '%s'\n",
780 get_cmd_string(cmd->id));
781 ret = -EIO;
782 goto out;
783 }
784
785 ret = 0;
786 goto out;
787
788 cancel:
789 if (cmd->meta.flags & CMD_WANT_SKB) {
790 struct iwl_cmd *qcmd;
791
792 /* Cancel the CMD_WANT_SKB flag for the cmd in the
793 * TX cmd queue. Otherwise in case the cmd comes
794 * in later, it will possibly set an invalid
795 * address (cmd->meta.source). */
796 qcmd = &priv->txq[IWL_CMD_QUEUE_NUM].cmd[cmd_idx];
797 qcmd->meta.flags &= ~CMD_WANT_SKB;
798 }
799 fail:
800 if (cmd->meta.u.skb) {
801 dev_kfree_skb_any(cmd->meta.u.skb);
802 cmd->meta.u.skb = NULL;
803 }
804 out:
805 atomic_set(&entry, 0);
806 return ret;
807 }
808
809 int iwl_send_cmd(struct iwl_priv *priv, struct iwl_host_cmd *cmd)
810 {
811 /* A command can not be asynchronous AND expect an SKB to be set. */
812 BUG_ON((cmd->meta.flags & CMD_ASYNC) &&
813 (cmd->meta.flags & CMD_WANT_SKB));
814
815 if (cmd->meta.flags & CMD_ASYNC)
816 return iwl_send_cmd_async(priv, cmd);
817
818 return iwl_send_cmd_sync(priv, cmd);
819 }
820
821 int iwl_send_cmd_pdu(struct iwl_priv *priv, u8 id, u16 len, const void *data)
822 {
823 struct iwl_host_cmd cmd = {
824 .id = id,
825 .len = len,
826 .data = data,
827 };
828
829 return iwl_send_cmd_sync(priv, &cmd);
830 }
831
832 static int __must_check iwl_send_cmd_u32(struct iwl_priv *priv, u8 id, u32 val)
833 {
834 struct iwl_host_cmd cmd = {
835 .id = id,
836 .len = sizeof(val),
837 .data = &val,
838 };
839
840 return iwl_send_cmd_sync(priv, &cmd);
841 }
842
843 int iwl_send_statistics_request(struct iwl_priv *priv)
844 {
845 return iwl_send_cmd_u32(priv, REPLY_STATISTICS_CMD, 0);
846 }
847
848 /**
849 * iwl_rxon_add_station - add station into station table.
850 *
851 * there is only one AP station with id= IWL_AP_ID
852 * NOTE: mutex must be held before calling the this fnction
853 */
854 static int iwl_rxon_add_station(struct iwl_priv *priv,
855 const u8 *addr, int is_ap)
856 {
857 u8 sta_id;
858
859 sta_id = iwl_add_station(priv, addr, is_ap, 0);
860 iwl4965_add_station(priv, addr, is_ap);
861
862 return sta_id;
863 }
864
865 /**
866 * iwl_set_rxon_channel - Set the phymode and channel values in staging RXON
867 * @phymode: MODE_IEEE80211A sets to 5.2GHz; all else set to 2.4GHz
868 * @channel: Any channel valid for the requested phymode
869
870 * In addition to setting the staging RXON, priv->phymode is also set.
871 *
872 * NOTE: Does not commit to the hardware; it sets appropriate bit fields
873 * in the staging RXON flag structure based on the phymode
874 */
875 static int iwl_set_rxon_channel(struct iwl_priv *priv, u8 phymode, u16 channel)
876 {
877 if (!iwl_get_channel_info(priv, phymode, channel)) {
878 IWL_DEBUG_INFO("Could not set channel to %d [%d]\n",
879 channel, phymode);
880 return -EINVAL;
881 }
882
883 if ((le16_to_cpu(priv->staging_rxon.channel) == channel) &&
884 (priv->phymode == phymode))
885 return 0;
886
887 priv->staging_rxon.channel = cpu_to_le16(channel);
888 if (phymode == MODE_IEEE80211A)
889 priv->staging_rxon.flags &= ~RXON_FLG_BAND_24G_MSK;
890 else
891 priv->staging_rxon.flags |= RXON_FLG_BAND_24G_MSK;
892
893 priv->phymode = phymode;
894
895 IWL_DEBUG_INFO("Staging channel set to %d [%d]\n", channel, phymode);
896
897 return 0;
898 }
899
900 /**
901 * iwl_check_rxon_cmd - validate RXON structure is valid
902 *
903 * NOTE: This is really only useful during development and can eventually
904 * be #ifdef'd out once the driver is stable and folks aren't actively
905 * making changes
906 */
907 static int iwl_check_rxon_cmd(struct iwl_rxon_cmd *rxon)
908 {
909 int error = 0;
910 int counter = 1;
911
912 if (rxon->flags & RXON_FLG_BAND_24G_MSK) {
913 error |= le32_to_cpu(rxon->flags &
914 (RXON_FLG_TGJ_NARROW_BAND_MSK |
915 RXON_FLG_RADAR_DETECT_MSK));
916 if (error)
917 IWL_WARNING("check 24G fields %d | %d\n",
918 counter++, error);
919 } else {
920 error |= (rxon->flags & RXON_FLG_SHORT_SLOT_MSK) ?
921 0 : le32_to_cpu(RXON_FLG_SHORT_SLOT_MSK);
922 if (error)
923 IWL_WARNING("check 52 fields %d | %d\n",
924 counter++, error);
925 error |= le32_to_cpu(rxon->flags & RXON_FLG_CCK_MSK);
926 if (error)
927 IWL_WARNING("check 52 CCK %d | %d\n",
928 counter++, error);
929 }
930 error |= (rxon->node_addr[0] | rxon->bssid_addr[0]) & 0x1;
931 if (error)
932 IWL_WARNING("check mac addr %d | %d\n", counter++, error);
933
934 /* make sure basic rates 6Mbps and 1Mbps are supported */
935 error |= (((rxon->ofdm_basic_rates & IWL_RATE_6M_MASK) == 0) &&
936 ((rxon->cck_basic_rates & IWL_RATE_1M_MASK) == 0));
937 if (error)
938 IWL_WARNING("check basic rate %d | %d\n", counter++, error);
939
940 error |= (le16_to_cpu(rxon->assoc_id) > 2007);
941 if (error)
942 IWL_WARNING("check assoc id %d | %d\n", counter++, error);
943
944 error |= ((rxon->flags & (RXON_FLG_CCK_MSK | RXON_FLG_SHORT_SLOT_MSK))
945 == (RXON_FLG_CCK_MSK | RXON_FLG_SHORT_SLOT_MSK));
946 if (error)
947 IWL_WARNING("check CCK and short slot %d | %d\n",
948 counter++, error);
949
950 error |= ((rxon->flags & (RXON_FLG_CCK_MSK | RXON_FLG_AUTO_DETECT_MSK))
951 == (RXON_FLG_CCK_MSK | RXON_FLG_AUTO_DETECT_MSK));
952 if (error)
953 IWL_WARNING("check CCK & auto detect %d | %d\n",
954 counter++, error);
955
956 error |= ((rxon->flags & (RXON_FLG_AUTO_DETECT_MSK |
957 RXON_FLG_TGG_PROTECT_MSK)) == RXON_FLG_TGG_PROTECT_MSK);
958 if (error)
959 IWL_WARNING("check TGG and auto detect %d | %d\n",
960 counter++, error);
961
962 if (error)
963 IWL_WARNING("Tuning to channel %d\n",
964 le16_to_cpu(rxon->channel));
965
966 if (error) {
967 IWL_ERROR("Not a valid iwl_rxon_assoc_cmd field values\n");
968 return -1;
969 }
970 return 0;
971 }
972
973 /**
974 * iwl_full_rxon_required - determine if RXON_ASSOC can be used in RXON commit
975 * @priv: staging_rxon is comapred to active_rxon
976 *
977 * If the RXON structure is changing sufficient to require a new
978 * tune or to clear and reset the RXON_FILTER_ASSOC_MSK then return 1
979 * to indicate a new tune is required.
980 */
981 static int iwl_full_rxon_required(struct iwl_priv *priv)
982 {
983
984 /* These items are only settable from the full RXON command */
985 if (!(priv->active_rxon.filter_flags & RXON_FILTER_ASSOC_MSK) ||
986 compare_ether_addr(priv->staging_rxon.bssid_addr,
987 priv->active_rxon.bssid_addr) ||
988 compare_ether_addr(priv->staging_rxon.node_addr,
989 priv->active_rxon.node_addr) ||
990 compare_ether_addr(priv->staging_rxon.wlap_bssid_addr,
991 priv->active_rxon.wlap_bssid_addr) ||
992 (priv->staging_rxon.dev_type != priv->active_rxon.dev_type) ||
993 (priv->staging_rxon.channel != priv->active_rxon.channel) ||
994 (priv->staging_rxon.air_propagation !=
995 priv->active_rxon.air_propagation) ||
996 (priv->staging_rxon.ofdm_ht_single_stream_basic_rates !=
997 priv->active_rxon.ofdm_ht_single_stream_basic_rates) ||
998 (priv->staging_rxon.ofdm_ht_dual_stream_basic_rates !=
999 priv->active_rxon.ofdm_ht_dual_stream_basic_rates) ||
1000 (priv->staging_rxon.rx_chain != priv->active_rxon.rx_chain) ||
1001 (priv->staging_rxon.assoc_id != priv->active_rxon.assoc_id))
1002 return 1;
1003
1004 /* flags, filter_flags, ofdm_basic_rates, and cck_basic_rates can
1005 * be updated with the RXON_ASSOC command -- however only some
1006 * flag transitions are allowed using RXON_ASSOC */
1007
1008 /* Check if we are not switching bands */
1009 if ((priv->staging_rxon.flags & RXON_FLG_BAND_24G_MSK) !=
1010 (priv->active_rxon.flags & RXON_FLG_BAND_24G_MSK))
1011 return 1;
1012
1013 /* Check if we are switching association toggle */
1014 if ((priv->staging_rxon.filter_flags & RXON_FILTER_ASSOC_MSK) !=
1015 (priv->active_rxon.filter_flags & RXON_FILTER_ASSOC_MSK))
1016 return 1;
1017
1018 return 0;
1019 }
1020
1021 static int iwl_send_rxon_assoc(struct iwl_priv *priv)
1022 {
1023 int rc = 0;
1024 struct iwl_rx_packet *res = NULL;
1025 struct iwl_rxon_assoc_cmd rxon_assoc;
1026 struct iwl_host_cmd cmd = {
1027 .id = REPLY_RXON_ASSOC,
1028 .len = sizeof(rxon_assoc),
1029 .meta.flags = CMD_WANT_SKB,
1030 .data = &rxon_assoc,
1031 };
1032 const struct iwl_rxon_cmd *rxon1 = &priv->staging_rxon;
1033 const struct iwl_rxon_cmd *rxon2 = &priv->active_rxon;
1034
1035 if ((rxon1->flags == rxon2->flags) &&
1036 (rxon1->filter_flags == rxon2->filter_flags) &&
1037 (rxon1->cck_basic_rates == rxon2->cck_basic_rates) &&
1038 (rxon1->ofdm_ht_single_stream_basic_rates ==
1039 rxon2->ofdm_ht_single_stream_basic_rates) &&
1040 (rxon1->ofdm_ht_dual_stream_basic_rates ==
1041 rxon2->ofdm_ht_dual_stream_basic_rates) &&
1042 (rxon1->rx_chain == rxon2->rx_chain) &&
1043 (rxon1->ofdm_basic_rates == rxon2->ofdm_basic_rates)) {
1044 IWL_DEBUG_INFO("Using current RXON_ASSOC. Not resending.\n");
1045 return 0;
1046 }
1047
1048 rxon_assoc.flags = priv->staging_rxon.flags;
1049 rxon_assoc.filter_flags = priv->staging_rxon.filter_flags;
1050 rxon_assoc.ofdm_basic_rates = priv->staging_rxon.ofdm_basic_rates;
1051 rxon_assoc.cck_basic_rates = priv->staging_rxon.cck_basic_rates;
1052 rxon_assoc.reserved = 0;
1053 rxon_assoc.ofdm_ht_single_stream_basic_rates =
1054 priv->staging_rxon.ofdm_ht_single_stream_basic_rates;
1055 rxon_assoc.ofdm_ht_dual_stream_basic_rates =
1056 priv->staging_rxon.ofdm_ht_dual_stream_basic_rates;
1057 rxon_assoc.rx_chain_select_flags = priv->staging_rxon.rx_chain;
1058
1059 rc = iwl_send_cmd_sync(priv, &cmd);
1060 if (rc)
1061 return rc;
1062
1063 res = (struct iwl_rx_packet *)cmd.meta.u.skb->data;
1064 if (res->hdr.flags & IWL_CMD_FAILED_MSK) {
1065 IWL_ERROR("Bad return from REPLY_RXON_ASSOC command\n");
1066 rc = -EIO;
1067 }
1068
1069 priv->alloc_rxb_skb--;
1070 dev_kfree_skb_any(cmd.meta.u.skb);
1071
1072 return rc;
1073 }
1074
1075 /**
1076 * iwl_commit_rxon - commit staging_rxon to hardware
1077 *
1078 * The RXON command in staging_rxon is commited to the hardware and
1079 * the active_rxon structure is updated with the new data. This
1080 * function correctly transitions out of the RXON_ASSOC_MSK state if
1081 * a HW tune is required based on the RXON structure changes.
1082 */
1083 static int iwl_commit_rxon(struct iwl_priv *priv)
1084 {
1085 /* cast away the const for active_rxon in this function */
1086 struct iwl_rxon_cmd *active_rxon = (void *)&priv->active_rxon;
1087 DECLARE_MAC_BUF(mac);
1088 int rc = 0;
1089
1090 if (!iwl_is_alive(priv))
1091 return -1;
1092
1093 /* always get timestamp with Rx frame */
1094 priv->staging_rxon.flags |= RXON_FLG_TSF2HOST_MSK;
1095
1096 rc = iwl_check_rxon_cmd(&priv->staging_rxon);
1097 if (rc) {
1098 IWL_ERROR("Invalid RXON configuration. Not committing.\n");
1099 return -EINVAL;
1100 }
1101
1102 /* If we don't need to send a full RXON, we can use
1103 * iwl_rxon_assoc_cmd which is used to reconfigure filter
1104 * and other flags for the current radio configuration. */
1105 if (!iwl_full_rxon_required(priv)) {
1106 rc = iwl_send_rxon_assoc(priv);
1107 if (rc) {
1108 IWL_ERROR("Error setting RXON_ASSOC "
1109 "configuration (%d).\n", rc);
1110 return rc;
1111 }
1112
1113 memcpy(active_rxon, &priv->staging_rxon, sizeof(*active_rxon));
1114
1115 return 0;
1116 }
1117
1118 /* station table will be cleared */
1119 priv->assoc_station_added = 0;
1120
1121 #ifdef CONFIG_IWLWIFI_SENSITIVITY
1122 priv->sensitivity_data.state = IWL_SENS_CALIB_NEED_REINIT;
1123 if (!priv->error_recovering)
1124 priv->start_calib = 0;
1125
1126 iwl4965_init_sensitivity(priv, CMD_ASYNC, 1);
1127 #endif /* CONFIG_IWLWIFI_SENSITIVITY */
1128
1129 /* If we are currently associated and the new config requires
1130 * an RXON_ASSOC and the new config wants the associated mask enabled,
1131 * we must clear the associated from the active configuration
1132 * before we apply the new config */
1133 if (iwl_is_associated(priv) &&
1134 (priv->staging_rxon.filter_flags & RXON_FILTER_ASSOC_MSK)) {
1135 IWL_DEBUG_INFO("Toggling associated bit on current RXON\n");
1136 active_rxon->filter_flags &= ~RXON_FILTER_ASSOC_MSK;
1137
1138 rc = iwl_send_cmd_pdu(priv, REPLY_RXON,
1139 sizeof(struct iwl_rxon_cmd),
1140 &priv->active_rxon);
1141
1142 /* If the mask clearing failed then we set
1143 * active_rxon back to what it was previously */
1144 if (rc) {
1145 active_rxon->filter_flags |= RXON_FILTER_ASSOC_MSK;
1146 IWL_ERROR("Error clearing ASSOC_MSK on current "
1147 "configuration (%d).\n", rc);
1148 return rc;
1149 }
1150 }
1151
1152 IWL_DEBUG_INFO("Sending RXON\n"
1153 "* with%s RXON_FILTER_ASSOC_MSK\n"
1154 "* channel = %d\n"
1155 "* bssid = %s\n",
1156 ((priv->staging_rxon.filter_flags &
1157 RXON_FILTER_ASSOC_MSK) ? "" : "out"),
1158 le16_to_cpu(priv->staging_rxon.channel),
1159 print_mac(mac, priv->staging_rxon.bssid_addr));
1160
1161 /* Apply the new configuration */
1162 rc = iwl_send_cmd_pdu(priv, REPLY_RXON,
1163 sizeof(struct iwl_rxon_cmd), &priv->staging_rxon);
1164 if (rc) {
1165 IWL_ERROR("Error setting new configuration (%d).\n", rc);
1166 return rc;
1167 }
1168
1169 iwl_clear_stations_table(priv);
1170
1171 #ifdef CONFIG_IWLWIFI_SENSITIVITY
1172 if (!priv->error_recovering)
1173 priv->start_calib = 0;
1174
1175 priv->sensitivity_data.state = IWL_SENS_CALIB_NEED_REINIT;
1176 iwl4965_init_sensitivity(priv, CMD_ASYNC, 1);
1177 #endif /* CONFIG_IWLWIFI_SENSITIVITY */
1178
1179 memcpy(active_rxon, &priv->staging_rxon, sizeof(*active_rxon));
1180
1181 /* If we issue a new RXON command which required a tune then we must
1182 * send a new TXPOWER command or we won't be able to Tx any frames */
1183 rc = iwl_hw_reg_send_txpower(priv);
1184 if (rc) {
1185 IWL_ERROR("Error setting Tx power (%d).\n", rc);
1186 return rc;
1187 }
1188
1189 /* Add the broadcast address so we can send broadcast frames */
1190 if (iwl_rxon_add_station(priv, BROADCAST_ADDR, 0) ==
1191 IWL_INVALID_STATION) {
1192 IWL_ERROR("Error adding BROADCAST address for transmit.\n");
1193 return -EIO;
1194 }
1195
1196 /* If we have set the ASSOC_MSK and we are in BSS mode then
1197 * add the IWL_AP_ID to the station rate table */
1198 if (iwl_is_associated(priv) &&
1199 (priv->iw_mode == IEEE80211_IF_TYPE_STA)) {
1200 if (iwl_rxon_add_station(priv, priv->active_rxon.bssid_addr, 1)
1201 == IWL_INVALID_STATION) {
1202 IWL_ERROR("Error adding AP address for transmit.\n");
1203 return -EIO;
1204 }
1205 priv->assoc_station_added = 1;
1206 }
1207
1208 return 0;
1209 }
1210
1211 static int iwl_send_bt_config(struct iwl_priv *priv)
1212 {
1213 struct iwl_bt_cmd bt_cmd = {
1214 .flags = 3,
1215 .lead_time = 0xAA,
1216 .max_kill = 1,
1217 .kill_ack_mask = 0,
1218 .kill_cts_mask = 0,
1219 };
1220
1221 return iwl_send_cmd_pdu(priv, REPLY_BT_CONFIG,
1222 sizeof(struct iwl_bt_cmd), &bt_cmd);
1223 }
1224
1225 static int iwl_send_scan_abort(struct iwl_priv *priv)
1226 {
1227 int rc = 0;
1228 struct iwl_rx_packet *res;
1229 struct iwl_host_cmd cmd = {
1230 .id = REPLY_SCAN_ABORT_CMD,
1231 .meta.flags = CMD_WANT_SKB,
1232 };
1233
1234 /* If there isn't a scan actively going on in the hardware
1235 * then we are in between scan bands and not actually
1236 * actively scanning, so don't send the abort command */
1237 if (!test_bit(STATUS_SCAN_HW, &priv->status)) {
1238 clear_bit(STATUS_SCAN_ABORTING, &priv->status);
1239 return 0;
1240 }
1241
1242 rc = iwl_send_cmd_sync(priv, &cmd);
1243 if (rc) {
1244 clear_bit(STATUS_SCAN_ABORTING, &priv->status);
1245 return rc;
1246 }
1247
1248 res = (struct iwl_rx_packet *)cmd.meta.u.skb->data;
1249 if (res->u.status != CAN_ABORT_STATUS) {
1250 /* The scan abort will return 1 for success or
1251 * 2 for "failure". A failure condition can be
1252 * due to simply not being in an active scan which
1253 * can occur if we send the scan abort before we
1254 * the microcode has notified us that a scan is
1255 * completed. */
1256 IWL_DEBUG_INFO("SCAN_ABORT returned %d.\n", res->u.status);
1257 clear_bit(STATUS_SCAN_ABORTING, &priv->status);
1258 clear_bit(STATUS_SCAN_HW, &priv->status);
1259 }
1260
1261 dev_kfree_skb_any(cmd.meta.u.skb);
1262
1263 return rc;
1264 }
1265
1266 static int iwl_card_state_sync_callback(struct iwl_priv *priv,
1267 struct iwl_cmd *cmd,
1268 struct sk_buff *skb)
1269 {
1270 return 1;
1271 }
1272
1273 /*
1274 * CARD_STATE_CMD
1275 *
1276 * Use: Sets the internal card state to enable, disable, or halt
1277 *
1278 * When in the 'enable' state the card operates as normal.
1279 * When in the 'disable' state, the card enters into a low power mode.
1280 * When in the 'halt' state, the card is shut down and must be fully
1281 * restarted to come back on.
1282 */
1283 static int iwl_send_card_state(struct iwl_priv *priv, u32 flags, u8 meta_flag)
1284 {
1285 struct iwl_host_cmd cmd = {
1286 .id = REPLY_CARD_STATE_CMD,
1287 .len = sizeof(u32),
1288 .data = &flags,
1289 .meta.flags = meta_flag,
1290 };
1291
1292 if (meta_flag & CMD_ASYNC)
1293 cmd.meta.u.callback = iwl_card_state_sync_callback;
1294
1295 return iwl_send_cmd(priv, &cmd);
1296 }
1297
1298 static int iwl_add_sta_sync_callback(struct iwl_priv *priv,
1299 struct iwl_cmd *cmd, struct sk_buff *skb)
1300 {
1301 struct iwl_rx_packet *res = NULL;
1302
1303 if (!skb) {
1304 IWL_ERROR("Error: Response NULL in REPLY_ADD_STA.\n");
1305 return 1;
1306 }
1307
1308 res = (struct iwl_rx_packet *)skb->data;
1309 if (res->hdr.flags & IWL_CMD_FAILED_MSK) {
1310 IWL_ERROR("Bad return from REPLY_ADD_STA (0x%08X)\n",
1311 res->hdr.flags);
1312 return 1;
1313 }
1314
1315 switch (res->u.add_sta.status) {
1316 case ADD_STA_SUCCESS_MSK:
1317 break;
1318 default:
1319 break;
1320 }
1321
1322 /* We didn't cache the SKB; let the caller free it */
1323 return 1;
1324 }
1325
1326 int iwl_send_add_station(struct iwl_priv *priv,
1327 struct iwl_addsta_cmd *sta, u8 flags)
1328 {
1329 struct iwl_rx_packet *res = NULL;
1330 int rc = 0;
1331 struct iwl_host_cmd cmd = {
1332 .id = REPLY_ADD_STA,
1333 .len = sizeof(struct iwl_addsta_cmd),
1334 .meta.flags = flags,
1335 .data = sta,
1336 };
1337
1338 if (flags & CMD_ASYNC)
1339 cmd.meta.u.callback = iwl_add_sta_sync_callback;
1340 else
1341 cmd.meta.flags |= CMD_WANT_SKB;
1342
1343 rc = iwl_send_cmd(priv, &cmd);
1344
1345 if (rc || (flags & CMD_ASYNC))
1346 return rc;
1347
1348 res = (struct iwl_rx_packet *)cmd.meta.u.skb->data;
1349 if (res->hdr.flags & IWL_CMD_FAILED_MSK) {
1350 IWL_ERROR("Bad return from REPLY_ADD_STA (0x%08X)\n",
1351 res->hdr.flags);
1352 rc = -EIO;
1353 }
1354
1355 if (rc == 0) {
1356 switch (res->u.add_sta.status) {
1357 case ADD_STA_SUCCESS_MSK:
1358 IWL_DEBUG_INFO("REPLY_ADD_STA PASSED\n");
1359 break;
1360 default:
1361 rc = -EIO;
1362 IWL_WARNING("REPLY_ADD_STA failed\n");
1363 break;
1364 }
1365 }
1366
1367 priv->alloc_rxb_skb--;
1368 dev_kfree_skb_any(cmd.meta.u.skb);
1369
1370 return rc;
1371 }
1372
1373 static int iwl_update_sta_key_info(struct iwl_priv *priv,
1374 struct ieee80211_key_conf *keyconf,
1375 u8 sta_id)
1376 {
1377 unsigned long flags;
1378 __le16 key_flags = 0;
1379
1380 switch (keyconf->alg) {
1381 case ALG_CCMP:
1382 key_flags |= STA_KEY_FLG_CCMP;
1383 key_flags |= cpu_to_le16(
1384 keyconf->keyidx << STA_KEY_FLG_KEYID_POS);
1385 key_flags &= ~STA_KEY_FLG_INVALID;
1386 break;
1387 case ALG_TKIP:
1388 case ALG_WEP:
1389 return -EINVAL;
1390 default:
1391 return -EINVAL;
1392 }
1393 spin_lock_irqsave(&priv->sta_lock, flags);
1394 priv->stations[sta_id].keyinfo.alg = keyconf->alg;
1395 priv->stations[sta_id].keyinfo.keylen = keyconf->keylen;
1396 memcpy(priv->stations[sta_id].keyinfo.key, keyconf->key,
1397 keyconf->keylen);
1398
1399 memcpy(priv->stations[sta_id].sta.key.key, keyconf->key,
1400 keyconf->keylen);
1401 priv->stations[sta_id].sta.key.key_flags = key_flags;
1402 priv->stations[sta_id].sta.sta.modify_mask = STA_MODIFY_KEY_MASK;
1403 priv->stations[sta_id].sta.mode = STA_CONTROL_MODIFY_MSK;
1404
1405 spin_unlock_irqrestore(&priv->sta_lock, flags);
1406
1407 IWL_DEBUG_INFO("hwcrypto: modify ucode station key info\n");
1408 iwl_send_add_station(priv, &priv->stations[sta_id].sta, 0);
1409 return 0;
1410 }
1411
1412 static int iwl_clear_sta_key_info(struct iwl_priv *priv, u8 sta_id)
1413 {
1414 unsigned long flags;
1415
1416 spin_lock_irqsave(&priv->sta_lock, flags);
1417 memset(&priv->stations[sta_id].keyinfo, 0, sizeof(struct iwl_hw_key));
1418 memset(&priv->stations[sta_id].sta.key, 0, sizeof(struct iwl_keyinfo));
1419 priv->stations[sta_id].sta.key.key_flags = STA_KEY_FLG_NO_ENC;
1420 priv->stations[sta_id].sta.sta.modify_mask = STA_MODIFY_KEY_MASK;
1421 priv->stations[sta_id].sta.mode = STA_CONTROL_MODIFY_MSK;
1422 spin_unlock_irqrestore(&priv->sta_lock, flags);
1423
1424 IWL_DEBUG_INFO("hwcrypto: clear ucode station key info\n");
1425 iwl_send_add_station(priv, &priv->stations[sta_id].sta, 0);
1426 return 0;
1427 }
1428
1429 static void iwl_clear_free_frames(struct iwl_priv *priv)
1430 {
1431 struct list_head *element;
1432
1433 IWL_DEBUG_INFO("%d frames on pre-allocated heap on clear.\n",
1434 priv->frames_count);
1435
1436 while (!list_empty(&priv->free_frames)) {
1437 element = priv->free_frames.next;
1438 list_del(element);
1439 kfree(list_entry(element, struct iwl_frame, list));
1440 priv->frames_count--;
1441 }
1442
1443 if (priv->frames_count) {
1444 IWL_WARNING("%d frames still in use. Did we lose one?\n",
1445 priv->frames_count);
1446 priv->frames_count = 0;
1447 }
1448 }
1449
1450 static struct iwl_frame *iwl_get_free_frame(struct iwl_priv *priv)
1451 {
1452 struct iwl_frame *frame;
1453 struct list_head *element;
1454 if (list_empty(&priv->free_frames)) {
1455 frame = kzalloc(sizeof(*frame), GFP_KERNEL);
1456 if (!frame) {
1457 IWL_ERROR("Could not allocate frame!\n");
1458 return NULL;
1459 }
1460
1461 priv->frames_count++;
1462 return frame;
1463 }
1464
1465 element = priv->free_frames.next;
1466 list_del(element);
1467 return list_entry(element, struct iwl_frame, list);
1468 }
1469
1470 static void iwl_free_frame(struct iwl_priv *priv, struct iwl_frame *frame)
1471 {
1472 memset(frame, 0, sizeof(*frame));
1473 list_add(&frame->list, &priv->free_frames);
1474 }
1475
1476 unsigned int iwl_fill_beacon_frame(struct iwl_priv *priv,
1477 struct ieee80211_hdr *hdr,
1478 const u8 *dest, int left)
1479 {
1480
1481 if (!iwl_is_associated(priv) || !priv->ibss_beacon ||
1482 ((priv->iw_mode != IEEE80211_IF_TYPE_IBSS) &&
1483 (priv->iw_mode != IEEE80211_IF_TYPE_AP)))
1484 return 0;
1485
1486 if (priv->ibss_beacon->len > left)
1487 return 0;
1488
1489 memcpy(hdr, priv->ibss_beacon->data, priv->ibss_beacon->len);
1490
1491 return priv->ibss_beacon->len;
1492 }
1493
1494 int iwl_rate_index_from_plcp(int plcp)
1495 {
1496 int i = 0;
1497
1498 if (plcp & RATE_MCS_HT_MSK) {
1499 i = (plcp & 0xff);
1500
1501 if (i >= IWL_RATE_MIMO_6M_PLCP)
1502 i = i - IWL_RATE_MIMO_6M_PLCP;
1503
1504 i += IWL_FIRST_OFDM_RATE;
1505 /* skip 9M not supported in ht*/
1506 if (i >= IWL_RATE_9M_INDEX)
1507 i += 1;
1508 if ((i >= IWL_FIRST_OFDM_RATE) &&
1509 (i <= IWL_LAST_OFDM_RATE))
1510 return i;
1511 } else {
1512 for (i = 0; i < ARRAY_SIZE(iwl_rates); i++)
1513 if (iwl_rates[i].plcp == (plcp &0xFF))
1514 return i;
1515 }
1516 return -1;
1517 }
1518
1519 static u8 iwl_rate_get_lowest_plcp(int rate_mask)
1520 {
1521 u8 i;
1522
1523 for (i = IWL_RATE_1M_INDEX; i != IWL_RATE_INVALID;
1524 i = iwl_rates[i].next_ieee) {
1525 if (rate_mask & (1 << i))
1526 return iwl_rates[i].plcp;
1527 }
1528
1529 return IWL_RATE_INVALID;
1530 }
1531
1532 static int iwl_send_beacon_cmd(struct iwl_priv *priv)
1533 {
1534 struct iwl_frame *frame;
1535 unsigned int frame_size;
1536 int rc;
1537 u8 rate;
1538
1539 frame = iwl_get_free_frame(priv);
1540
1541 if (!frame) {
1542 IWL_ERROR("Could not obtain free frame buffer for beacon "
1543 "command.\n");
1544 return -ENOMEM;
1545 }
1546
1547 if (!(priv->staging_rxon.flags & RXON_FLG_BAND_24G_MSK)) {
1548 rate = iwl_rate_get_lowest_plcp(priv->active_rate_basic &
1549 0xFF0);
1550 if (rate == IWL_INVALID_RATE)
1551 rate = IWL_RATE_6M_PLCP;
1552 } else {
1553 rate = iwl_rate_get_lowest_plcp(priv->active_rate_basic & 0xF);
1554 if (rate == IWL_INVALID_RATE)
1555 rate = IWL_RATE_1M_PLCP;
1556 }
1557
1558 frame_size = iwl_hw_get_beacon_cmd(priv, frame, rate);
1559
1560 rc = iwl_send_cmd_pdu(priv, REPLY_TX_BEACON, frame_size,
1561 &frame->u.cmd[0]);
1562
1563 iwl_free_frame(priv, frame);
1564
1565 return rc;
1566 }
1567
1568 /******************************************************************************
1569 *
1570 * EEPROM related functions
1571 *
1572 ******************************************************************************/
1573
1574 static void get_eeprom_mac(struct iwl_priv *priv, u8 *mac)
1575 {
1576 memcpy(mac, priv->eeprom.mac_address, 6);
1577 }
1578
1579 /**
1580 * iwl_eeprom_init - read EEPROM contents
1581 *
1582 * Load the EEPROM from adapter into priv->eeprom
1583 *
1584 * NOTE: This routine uses the non-debug IO access functions.
1585 */
1586 int iwl_eeprom_init(struct iwl_priv *priv)
1587 {
1588 u16 *e = (u16 *)&priv->eeprom;
1589 u32 gp = iwl_read32(priv, CSR_EEPROM_GP);
1590 u32 r;
1591 int sz = sizeof(priv->eeprom);
1592 int rc;
1593 int i;
1594 u16 addr;
1595
1596 /* The EEPROM structure has several padding buffers within it
1597 * and when adding new EEPROM maps is subject to programmer errors
1598 * which may be very difficult to identify without explicitly
1599 * checking the resulting size of the eeprom map. */
1600 BUILD_BUG_ON(sizeof(priv->eeprom) != IWL_EEPROM_IMAGE_SIZE);
1601
1602 if ((gp & CSR_EEPROM_GP_VALID_MSK) == CSR_EEPROM_GP_BAD_SIGNATURE) {
1603 IWL_ERROR("EEPROM not found, EEPROM_GP=0x%08x", gp);
1604 return -ENOENT;
1605 }
1606
1607 rc = iwl_eeprom_aqcuire_semaphore(priv);
1608 if (rc < 0) {
1609 IWL_ERROR("Failed to aqcuire EEPROM semaphore.\n");
1610 return -ENOENT;
1611 }
1612
1613 /* eeprom is an array of 16bit values */
1614 for (addr = 0; addr < sz; addr += sizeof(u16)) {
1615 _iwl_write32(priv, CSR_EEPROM_REG, addr << 1);
1616 _iwl_clear_bit(priv, CSR_EEPROM_REG, CSR_EEPROM_REG_BIT_CMD);
1617
1618 for (i = 0; i < IWL_EEPROM_ACCESS_TIMEOUT;
1619 i += IWL_EEPROM_ACCESS_DELAY) {
1620 r = _iwl_read_restricted(priv, CSR_EEPROM_REG);
1621 if (r & CSR_EEPROM_REG_READ_VALID_MSK)
1622 break;
1623 udelay(IWL_EEPROM_ACCESS_DELAY);
1624 }
1625
1626 if (!(r & CSR_EEPROM_REG_READ_VALID_MSK)) {
1627 IWL_ERROR("Time out reading EEPROM[%d]", addr);
1628 rc = -ETIMEDOUT;
1629 goto done;
1630 }
1631 e[addr / 2] = le16_to_cpu(r >> 16);
1632 }
1633 rc = 0;
1634
1635 done:
1636 iwl_eeprom_release_semaphore(priv);
1637 return rc;
1638 }
1639
1640 /******************************************************************************
1641 *
1642 * Misc. internal state and helper functions
1643 *
1644 ******************************************************************************/
1645 #ifdef CONFIG_IWLWIFI_DEBUG
1646
1647 /**
1648 * iwl_report_frame - dump frame to syslog during debug sessions
1649 *
1650 * hack this function to show different aspects of received frames,
1651 * including selective frame dumps.
1652 * group100 parameter selects whether to show 1 out of 100 good frames.
1653 *
1654 * TODO: ieee80211_hdr stuff is common to 3945 and 4965, so frame type
1655 * info output is okay, but some of this stuff (e.g. iwl_rx_frame_stats)
1656 * is 3945-specific and gives bad output for 4965. Need to split the
1657 * functionality, keep common stuff here.
1658 */
1659 void iwl_report_frame(struct iwl_priv *priv,
1660 struct iwl_rx_packet *pkt,
1661 struct ieee80211_hdr *header, int group100)
1662 {
1663 u32 to_us;
1664 u32 print_summary = 0;
1665 u32 print_dump = 0; /* set to 1 to dump all frames' contents */
1666 u32 hundred = 0;
1667 u32 dataframe = 0;
1668 u16 fc;
1669 u16 seq_ctl;
1670 u16 channel;
1671 u16 phy_flags;
1672 int rate_sym;
1673 u16 length;
1674 u16 status;
1675 u16 bcn_tmr;
1676 u32 tsf_low;
1677 u64 tsf;
1678 u8 rssi;
1679 u8 agc;
1680 u16 sig_avg;
1681 u16 noise_diff;
1682 struct iwl_rx_frame_stats *rx_stats = IWL_RX_STATS(pkt);
1683 struct iwl_rx_frame_hdr *rx_hdr = IWL_RX_HDR(pkt);
1684 struct iwl_rx_frame_end *rx_end = IWL_RX_END(pkt);
1685 u8 *data = IWL_RX_DATA(pkt);
1686
1687 /* MAC header */
1688 fc = le16_to_cpu(header->frame_control);
1689 seq_ctl = le16_to_cpu(header->seq_ctrl);
1690
1691 /* metadata */
1692 channel = le16_to_cpu(rx_hdr->channel);
1693 phy_flags = le16_to_cpu(rx_hdr->phy_flags);
1694 rate_sym = rx_hdr->rate;
1695 length = le16_to_cpu(rx_hdr->len);
1696
1697 /* end-of-frame status and timestamp */
1698 status = le32_to_cpu(rx_end->status);
1699 bcn_tmr = le32_to_cpu(rx_end->beacon_timestamp);
1700 tsf_low = le64_to_cpu(rx_end->timestamp) & 0x0ffffffff;
1701 tsf = le64_to_cpu(rx_end->timestamp);
1702
1703 /* signal statistics */
1704 rssi = rx_stats->rssi;
1705 agc = rx_stats->agc;
1706 sig_avg = le16_to_cpu(rx_stats->sig_avg);
1707 noise_diff = le16_to_cpu(rx_stats->noise_diff);
1708
1709 to_us = !compare_ether_addr(header->addr1, priv->mac_addr);
1710
1711 /* if data frame is to us and all is good,
1712 * (optionally) print summary for only 1 out of every 100 */
1713 if (to_us && (fc & ~IEEE80211_FCTL_PROTECTED) ==
1714 (IEEE80211_FCTL_FROMDS | IEEE80211_FTYPE_DATA)) {
1715 dataframe = 1;
1716 if (!group100)
1717 print_summary = 1; /* print each frame */
1718 else if (priv->framecnt_to_us < 100) {
1719 priv->framecnt_to_us++;
1720 print_summary = 0;
1721 } else {
1722 priv->framecnt_to_us = 0;
1723 print_summary = 1;
1724 hundred = 1;
1725 }
1726 } else {
1727 /* print summary for all other frames */
1728 print_summary = 1;
1729 }
1730
1731 if (print_summary) {
1732 char *title;
1733 u32 rate;
1734
1735 if (hundred)
1736 title = "100Frames";
1737 else if (fc & IEEE80211_FCTL_RETRY)
1738 title = "Retry";
1739 else if (ieee80211_is_assoc_response(fc))
1740 title = "AscRsp";
1741 else if (ieee80211_is_reassoc_response(fc))
1742 title = "RasRsp";
1743 else if (ieee80211_is_probe_response(fc)) {
1744 title = "PrbRsp";
1745 print_dump = 1; /* dump frame contents */
1746 } else if (ieee80211_is_beacon(fc)) {
1747 title = "Beacon";
1748 print_dump = 1; /* dump frame contents */
1749 } else if (ieee80211_is_atim(fc))
1750 title = "ATIM";
1751 else if (ieee80211_is_auth(fc))
1752 title = "Auth";
1753 else if (ieee80211_is_deauth(fc))
1754 title = "DeAuth";
1755 else if (ieee80211_is_disassoc(fc))
1756 title = "DisAssoc";
1757 else
1758 title = "Frame";
1759
1760 rate = iwl_rate_index_from_plcp(rate_sym);
1761 if (rate == -1)
1762 rate = 0;
1763 else
1764 rate = iwl_rates[rate].ieee / 2;
1765
1766 /* print frame summary.
1767 * MAC addresses show just the last byte (for brevity),
1768 * but you can hack it to show more, if you'd like to. */
1769 if (dataframe)
1770 IWL_DEBUG_RX("%s: mhd=0x%04x, dst=0x%02x, "
1771 "len=%u, rssi=%d, chnl=%d, rate=%u, \n",
1772 title, fc, header->addr1[5],
1773 length, rssi, channel, rate);
1774 else {
1775 /* src/dst addresses assume managed mode */
1776 IWL_DEBUG_RX("%s: 0x%04x, dst=0x%02x, "
1777 "src=0x%02x, rssi=%u, tim=%lu usec, "
1778 "phy=0x%02x, chnl=%d\n",
1779 title, fc, header->addr1[5],
1780 header->addr3[5], rssi,
1781 tsf_low - priv->scan_start_tsf,
1782 phy_flags, channel);
1783 }
1784 }
1785 if (print_dump)
1786 iwl_print_hex_dump(IWL_DL_RX, data, length);
1787 }
1788 #endif
1789
1790 static void iwl_unset_hw_setting(struct iwl_priv *priv)
1791 {
1792 if (priv->hw_setting.shared_virt)
1793 pci_free_consistent(priv->pci_dev,
1794 sizeof(struct iwl_shared),
1795 priv->hw_setting.shared_virt,
1796 priv->hw_setting.shared_phys);
1797 }
1798
1799 /**
1800 * iwl_supported_rate_to_ie - fill in the supported rate in IE field
1801 *
1802 * return : set the bit for each supported rate insert in ie
1803 */
1804 static u16 iwl_supported_rate_to_ie(u8 *ie, u16 supported_rate,
1805 u16 basic_rate, int max_count)
1806 {
1807 u16 ret_rates = 0, bit;
1808 int i;
1809 u8 *rates;
1810
1811 rates = &(ie[1]);
1812
1813 for (bit = 1, i = 0; i < IWL_RATE_COUNT; i++, bit <<= 1) {
1814 if (bit & supported_rate) {
1815 ret_rates |= bit;
1816 rates[*ie] = iwl_rates[i].ieee |
1817 ((bit & basic_rate) ? 0x80 : 0x00);
1818 *ie = *ie + 1;
1819 if (*ie >= max_count)
1820 break;
1821 }
1822 }
1823
1824 return ret_rates;
1825 }
1826
1827 #ifdef CONFIG_IWLWIFI_HT
1828 void static iwl_set_ht_capab(struct ieee80211_hw *hw,
1829 struct ieee80211_ht_capability *ht_cap,
1830 u8 use_wide_chan);
1831 #endif
1832
1833 /**
1834 * iwl_fill_probe_req - fill in all required fields and IE for probe request
1835 */
1836 static u16 iwl_fill_probe_req(struct iwl_priv *priv,
1837 struct ieee80211_mgmt *frame,
1838 int left, int is_direct)
1839 {
1840 int len = 0;
1841 u8 *pos = NULL;
1842 u16 ret_rates;
1843
1844 /* Make sure there is enough space for the probe request,
1845 * two mandatory IEs and the data */
1846 left -= 24;
1847 if (left < 0)
1848 return 0;
1849 len += 24;
1850
1851 frame->frame_control = cpu_to_le16(IEEE80211_STYPE_PROBE_REQ);
1852 memcpy(frame->da, BROADCAST_ADDR, ETH_ALEN);
1853 memcpy(frame->sa, priv->mac_addr, ETH_ALEN);
1854 memcpy(frame->bssid, BROADCAST_ADDR, ETH_ALEN);
1855 frame->seq_ctrl = 0;
1856
1857 /* fill in our indirect SSID IE */
1858 /* ...next IE... */
1859
1860 left -= 2;
1861 if (left < 0)
1862 return 0;
1863 len += 2;
1864 pos = &(frame->u.probe_req.variable[0]);
1865 *pos++ = WLAN_EID_SSID;
1866 *pos++ = 0;
1867
1868 /* fill in our direct SSID IE... */
1869 if (is_direct) {
1870 /* ...next IE... */
1871 left -= 2 + priv->essid_len;
1872 if (left < 0)
1873 return 0;
1874 /* ... fill it in... */
1875 *pos++ = WLAN_EID_SSID;
1876 *pos++ = priv->essid_len;
1877 memcpy(pos, priv->essid, priv->essid_len);
1878 pos += priv->essid_len;
1879 len += 2 + priv->essid_len;
1880 }
1881
1882 /* fill in supported rate */
1883 /* ...next IE... */
1884 left -= 2;
1885 if (left < 0)
1886 return 0;
1887 /* ... fill it in... */
1888 *pos++ = WLAN_EID_SUPP_RATES;
1889 *pos = 0;
1890 ret_rates = priv->active_rate = priv->rates_mask;
1891 priv->active_rate_basic = priv->rates_mask & IWL_BASIC_RATES_MASK;
1892
1893 iwl_supported_rate_to_ie(pos, priv->active_rate,
1894 priv->active_rate_basic, left);
1895 len += 2 + *pos;
1896 pos += (*pos) + 1;
1897 ret_rates = ~ret_rates & priv->active_rate;
1898
1899 if (ret_rates == 0)
1900 goto fill_end;
1901
1902 /* fill in supported extended rate */
1903 /* ...next IE... */
1904 left -= 2;
1905 if (left < 0)
1906 return 0;
1907 /* ... fill it in... */
1908 *pos++ = WLAN_EID_EXT_SUPP_RATES;
1909 *pos = 0;
1910 iwl_supported_rate_to_ie(pos, ret_rates, priv->active_rate_basic, left);
1911 if (*pos > 0)
1912 len += 2 + *pos;
1913
1914 #ifdef CONFIG_IWLWIFI_HT
1915 if (is_direct && priv->is_ht_enabled) {
1916 u8 use_wide_chan = 1;
1917
1918 if (priv->channel_width != IWL_CHANNEL_WIDTH_40MHZ)
1919 use_wide_chan = 0;
1920 pos += (*pos) + 1;
1921 *pos++ = WLAN_EID_HT_CAPABILITY;
1922 *pos++ = sizeof(struct ieee80211_ht_capability);
1923 iwl_set_ht_capab(NULL, (struct ieee80211_ht_capability *)pos,
1924 use_wide_chan);
1925 len += 2 + sizeof(struct ieee80211_ht_capability);
1926 }
1927 #endif /*CONFIG_IWLWIFI_HT */
1928
1929 fill_end:
1930 return (u16)len;
1931 }
1932
1933 /*
1934 * QoS support
1935 */
1936 #ifdef CONFIG_IWLWIFI_QOS
1937 static int iwl_send_qos_params_command(struct iwl_priv *priv,
1938 struct iwl_qosparam_cmd *qos)
1939 {
1940
1941 return iwl_send_cmd_pdu(priv, REPLY_QOS_PARAM,
1942 sizeof(struct iwl_qosparam_cmd), qos);
1943 }
1944
1945 static void iwl_reset_qos(struct iwl_priv *priv)
1946 {
1947 u16 cw_min = 15;
1948 u16 cw_max = 1023;
1949 u8 aifs = 2;
1950 u8 is_legacy = 0;
1951 unsigned long flags;
1952 int i;
1953
1954 spin_lock_irqsave(&priv->lock, flags);
1955 priv->qos_data.qos_active = 0;
1956
1957 if (priv->iw_mode == IEEE80211_IF_TYPE_IBSS) {
1958 if (priv->qos_data.qos_enable)
1959 priv->qos_data.qos_active = 1;
1960 if (!(priv->active_rate & 0xfff0)) {
1961 cw_min = 31;
1962 is_legacy = 1;
1963 }
1964 } else if (priv->iw_mode == IEEE80211_IF_TYPE_AP) {
1965 if (priv->qos_data.qos_enable)
1966 priv->qos_data.qos_active = 1;
1967 } else if (!(priv->staging_rxon.flags & RXON_FLG_SHORT_SLOT_MSK)) {
1968 cw_min = 31;
1969 is_legacy = 1;
1970 }
1971
1972 if (priv->qos_data.qos_active)
1973 aifs = 3;
1974
1975 priv->qos_data.def_qos_parm.ac[0].cw_min = cpu_to_le16(cw_min);
1976 priv->qos_data.def_qos_parm.ac[0].cw_max = cpu_to_le16(cw_max);
1977 priv->qos_data.def_qos_parm.ac[0].aifsn = aifs;
1978 priv->qos_data.def_qos_parm.ac[0].edca_txop = 0;
1979 priv->qos_data.def_qos_parm.ac[0].reserved1 = 0;
1980
1981 if (priv->qos_data.qos_active) {
1982 i = 1;
1983 priv->qos_data.def_qos_parm.ac[i].cw_min = cpu_to_le16(cw_min);
1984 priv->qos_data.def_qos_parm.ac[i].cw_max = cpu_to_le16(cw_max);
1985 priv->qos_data.def_qos_parm.ac[i].aifsn = 7;
1986 priv->qos_data.def_qos_parm.ac[i].edca_txop = 0;
1987 priv->qos_data.def_qos_parm.ac[i].reserved1 = 0;
1988
1989 i = 2;
1990 priv->qos_data.def_qos_parm.ac[i].cw_min =
1991 cpu_to_le16((cw_min + 1) / 2 - 1);
1992 priv->qos_data.def_qos_parm.ac[i].cw_max =
1993 cpu_to_le16(cw_max);
1994 priv->qos_data.def_qos_parm.ac[i].aifsn = 2;
1995 if (is_legacy)
1996 priv->qos_data.def_qos_parm.ac[i].edca_txop =
1997 cpu_to_le16(6016);
1998 else
1999 priv->qos_data.def_qos_parm.ac[i].edca_txop =
2000 cpu_to_le16(3008);
2001 priv->qos_data.def_qos_parm.ac[i].reserved1 = 0;
2002
2003 i = 3;
2004 priv->qos_data.def_qos_parm.ac[i].cw_min =
2005 cpu_to_le16((cw_min + 1) / 4 - 1);
2006 priv->qos_data.def_qos_parm.ac[i].cw_max =
2007 cpu_to_le16((cw_max + 1) / 2 - 1);
2008 priv->qos_data.def_qos_parm.ac[i].aifsn = 2;
2009 priv->qos_data.def_qos_parm.ac[i].reserved1 = 0;
2010 if (is_legacy)
2011 priv->qos_data.def_qos_parm.ac[i].edca_txop =
2012 cpu_to_le16(3264);
2013 else
2014 priv->qos_data.def_qos_parm.ac[i].edca_txop =
2015 cpu_to_le16(1504);
2016 } else {
2017 for (i = 1; i < 4; i++) {
2018 priv->qos_data.def_qos_parm.ac[i].cw_min =
2019 cpu_to_le16(cw_min);
2020 priv->qos_data.def_qos_parm.ac[i].cw_max =
2021 cpu_to_le16(cw_max);
2022 priv->qos_data.def_qos_parm.ac[i].aifsn = aifs;
2023 priv->qos_data.def_qos_parm.ac[i].edca_txop = 0;
2024 priv->qos_data.def_qos_parm.ac[i].reserved1 = 0;
2025 }
2026 }
2027 IWL_DEBUG_QOS("set QoS to default \n");
2028
2029 spin_unlock_irqrestore(&priv->lock, flags);
2030 }
2031
2032 static void iwl_activate_qos(struct iwl_priv *priv, u8 force)
2033 {
2034 unsigned long flags;
2035
2036 if (priv == NULL)
2037 return;
2038
2039 if (test_bit(STATUS_EXIT_PENDING, &priv->status))
2040 return;
2041
2042 if (!priv->qos_data.qos_enable)
2043 return;
2044
2045 spin_lock_irqsave(&priv->lock, flags);
2046 priv->qos_data.def_qos_parm.qos_flags = 0;
2047
2048 if (priv->qos_data.qos_cap.q_AP.queue_request &&
2049 !priv->qos_data.qos_cap.q_AP.txop_request)
2050 priv->qos_data.def_qos_parm.qos_flags |=
2051 QOS_PARAM_FLG_TXOP_TYPE_MSK;
2052
2053 if (priv->qos_data.qos_active)
2054 priv->qos_data.def_qos_parm.qos_flags |=
2055 QOS_PARAM_FLG_UPDATE_EDCA_MSK;
2056
2057 spin_unlock_irqrestore(&priv->lock, flags);
2058
2059 if (force || iwl_is_associated(priv)) {
2060 IWL_DEBUG_QOS("send QoS cmd with Qos active %d \n",
2061 priv->qos_data.qos_active);
2062
2063 iwl_send_qos_params_command(priv,
2064 &(priv->qos_data.def_qos_parm));
2065 }
2066 }
2067
2068 #endif /* CONFIG_IWLWIFI_QOS */
2069 /*
2070 * Power management (not Tx power!) functions
2071 */
2072 #define MSEC_TO_USEC 1024
2073
2074 #define NOSLP __constant_cpu_to_le16(0), 0, 0
2075 #define SLP IWL_POWER_DRIVER_ALLOW_SLEEP_MSK, 0, 0
2076 #define SLP_TIMEOUT(T) __constant_cpu_to_le32((T) * MSEC_TO_USEC)
2077 #define SLP_VEC(X0, X1, X2, X3, X4) {__constant_cpu_to_le32(X0), \
2078 __constant_cpu_to_le32(X1), \
2079 __constant_cpu_to_le32(X2), \
2080 __constant_cpu_to_le32(X3), \
2081 __constant_cpu_to_le32(X4)}
2082
2083
2084 /* default power management (not Tx power) table values */
2085 /* for tim 0-10 */
2086 static struct iwl_power_vec_entry range_0[IWL_POWER_AC] = {
2087 {{NOSLP, SLP_TIMEOUT(0), SLP_TIMEOUT(0), SLP_VEC(0, 0, 0, 0, 0)}, 0},
2088 {{SLP, SLP_TIMEOUT(200), SLP_TIMEOUT(500), SLP_VEC(1, 2, 3, 4, 4)}, 0},
2089 {{SLP, SLP_TIMEOUT(200), SLP_TIMEOUT(300), SLP_VEC(2, 4, 6, 7, 7)}, 0},
2090 {{SLP, SLP_TIMEOUT(50), SLP_TIMEOUT(100), SLP_VEC(2, 6, 9, 9, 10)}, 0},
2091 {{SLP, SLP_TIMEOUT(50), SLP_TIMEOUT(25), SLP_VEC(2, 7, 9, 9, 10)}, 1},
2092 {{SLP, SLP_TIMEOUT(25), SLP_TIMEOUT(25), SLP_VEC(4, 7, 10, 10, 10)}, 1}
2093 };
2094
2095 /* for tim > 10 */
2096 static struct iwl_power_vec_entry range_1[IWL_POWER_AC] = {
2097 {{NOSLP, SLP_TIMEOUT(0), SLP_TIMEOUT(0), SLP_VEC(0, 0, 0, 0, 0)}, 0},
2098 {{SLP, SLP_TIMEOUT(200), SLP_TIMEOUT(500),
2099 SLP_VEC(1, 2, 3, 4, 0xFF)}, 0},
2100 {{SLP, SLP_TIMEOUT(200), SLP_TIMEOUT(300),
2101 SLP_VEC(2, 4, 6, 7, 0xFF)}, 0},
2102 {{SLP, SLP_TIMEOUT(50), SLP_TIMEOUT(100),
2103 SLP_VEC(2, 6, 9, 9, 0xFF)}, 0},
2104 {{SLP, SLP_TIMEOUT(50), SLP_TIMEOUT(25), SLP_VEC(2, 7, 9, 9, 0xFF)}, 0},
2105 {{SLP, SLP_TIMEOUT(25), SLP_TIMEOUT(25),
2106 SLP_VEC(4, 7, 10, 10, 0xFF)}, 0}
2107 };
2108
2109 int iwl_power_init_handle(struct iwl_priv *priv)
2110 {
2111 int rc = 0, i;
2112 struct iwl_power_mgr *pow_data;
2113 int size = sizeof(struct iwl_power_vec_entry) * IWL_POWER_AC;
2114 u16 pci_pm;
2115
2116 IWL_DEBUG_POWER("Initialize power \n");
2117
2118 pow_data = &(priv->power_data);
2119
2120 memset(pow_data, 0, sizeof(*pow_data));
2121
2122 pow_data->active_index = IWL_POWER_RANGE_0;
2123 pow_data->dtim_val = 0xffff;
2124
2125 memcpy(&pow_data->pwr_range_0[0], &range_0[0], size);
2126 memcpy(&pow_data->pwr_range_1[0], &range_1[0], size);
2127
2128 rc = pci_read_config_word(priv->pci_dev, PCI_LINK_CTRL, &pci_pm);
2129 if (rc != 0)
2130 return 0;
2131 else {
2132 struct iwl_powertable_cmd *cmd;
2133
2134 IWL_DEBUG_POWER("adjust power command flags\n");
2135
2136 for (i = 0; i < IWL_POWER_AC; i++) {
2137 cmd = &pow_data->pwr_range_0[i].cmd;
2138
2139 if (pci_pm & 0x1)
2140 cmd->flags &= ~IWL_POWER_PCI_PM_MSK;
2141 else
2142 cmd->flags |= IWL_POWER_PCI_PM_MSK;
2143 }
2144 }
2145 return rc;
2146 }
2147
2148 static int iwl_update_power_cmd(struct iwl_priv *priv,
2149 struct iwl_powertable_cmd *cmd, u32 mode)
2150 {
2151 int rc = 0, i;
2152 u8 skip;
2153 u32 max_sleep = 0;
2154 struct iwl_power_vec_entry *range;
2155 u8 period = 0;
2156 struct iwl_power_mgr *pow_data;
2157
2158 if (mode > IWL_POWER_INDEX_5) {
2159 IWL_DEBUG_POWER("Error invalid power mode \n");
2160 return -1;
2161 }
2162 pow_data = &(priv->power_data);
2163
2164 if (pow_data->active_index == IWL_POWER_RANGE_0)
2165 range = &pow_data->pwr_range_0[0];
2166 else
2167 range = &pow_data->pwr_range_1[1];
2168
2169 memcpy(cmd, &range[mode].cmd, sizeof(struct iwl_powertable_cmd));
2170
2171 #ifdef IWL_MAC80211_DISABLE
2172 if (priv->assoc_network != NULL) {
2173 unsigned long flags;
2174
2175 period = priv->assoc_network->tim.tim_period;
2176 }
2177 #endif /*IWL_MAC80211_DISABLE */
2178 skip = range[mode].no_dtim;
2179
2180 if (period == 0) {
2181 period = 1;
2182 skip = 0;
2183 }
2184
2185 if (skip == 0) {
2186 max_sleep = period;
2187 cmd->flags &= ~IWL_POWER_SLEEP_OVER_DTIM_MSK;
2188 } else {
2189 __le32 slp_itrvl = cmd->sleep_interval[IWL_POWER_VEC_SIZE - 1];
2190 max_sleep = (le32_to_cpu(slp_itrvl) / period) * period;
2191 cmd->flags |= IWL_POWER_SLEEP_OVER_DTIM_MSK;
2192 }
2193
2194 for (i = 0; i < IWL_POWER_VEC_SIZE; i++) {
2195 if (le32_to_cpu(cmd->sleep_interval[i]) > max_sleep)
2196 cmd->sleep_interval[i] = cpu_to_le32(max_sleep);
2197 }
2198
2199 IWL_DEBUG_POWER("Flags value = 0x%08X\n", cmd->flags);
2200 IWL_DEBUG_POWER("Tx timeout = %u\n", le32_to_cpu(cmd->tx_data_timeout));
2201 IWL_DEBUG_POWER("Rx timeout = %u\n", le32_to_cpu(cmd->rx_data_timeout));
2202 IWL_DEBUG_POWER("Sleep interval vector = { %d , %d , %d , %d , %d }\n",
2203 le32_to_cpu(cmd->sleep_interval[0]),
2204 le32_to_cpu(cmd->sleep_interval[1]),
2205 le32_to_cpu(cmd->sleep_interval[2]),
2206 le32_to_cpu(cmd->sleep_interval[3]),
2207 le32_to_cpu(cmd->sleep_interval[4]));
2208
2209 return rc;
2210 }
2211
2212 static int iwl_send_power_mode(struct iwl_priv *priv, u32 mode)
2213 {
2214 u32 final_mode = mode;
2215 int rc;
2216 struct iwl_powertable_cmd cmd;
2217
2218 /* If on battery, set to 3,
2219 * if plugged into AC power, set to CAM ("continuosly aware mode"),
2220 * else user level */
2221 switch (mode) {
2222 case IWL_POWER_BATTERY:
2223 final_mode = IWL_POWER_INDEX_3;
2224 break;
2225 case IWL_POWER_AC:
2226 final_mode = IWL_POWER_MODE_CAM;
2227 break;
2228 default:
2229 final_mode = mode;
2230 break;
2231 }
2232
2233 cmd.keep_alive_beacons = 0;
2234
2235 iwl_update_power_cmd(priv, &cmd, final_mode);
2236
2237 rc = iwl_send_cmd_pdu(priv, POWER_TABLE_CMD, sizeof(cmd), &cmd);
2238
2239 if (final_mode == IWL_POWER_MODE_CAM)
2240 clear_bit(STATUS_POWER_PMI, &priv->status);
2241 else
2242 set_bit(STATUS_POWER_PMI, &priv->status);
2243
2244 return rc;
2245 }
2246
2247 int iwl_is_network_packet(struct iwl_priv *priv, struct ieee80211_hdr *header)
2248 {
2249 /* Filter incoming packets to determine if they are targeted toward
2250 * this network, discarding packets coming from ourselves */
2251 switch (priv->iw_mode) {
2252 case IEEE80211_IF_TYPE_IBSS: /* Header: Dest. | Source | BSSID */
2253 /* packets from our adapter are dropped (echo) */
2254 if (!compare_ether_addr(header->addr2, priv->mac_addr))
2255 return 0;
2256 /* {broad,multi}cast packets to our IBSS go through */
2257 if (is_multicast_ether_addr(header->addr1))
2258 return !compare_ether_addr(header->addr3, priv->bssid);
2259 /* packets to our adapter go through */
2260 return !compare_ether_addr(header->addr1, priv->mac_addr);
2261 case IEEE80211_IF_TYPE_STA: /* Header: Dest. | AP{BSSID} | Source */
2262 /* packets from our adapter are dropped (echo) */
2263 if (!compare_ether_addr(header->addr3, priv->mac_addr))
2264 return 0;
2265 /* {broad,multi}cast packets to our BSS go through */
2266 if (is_multicast_ether_addr(header->addr1))
2267 return !compare_ether_addr(header->addr2, priv->bssid);
2268 /* packets to our adapter go through */
2269 return !compare_ether_addr(header->addr1, priv->mac_addr);
2270 }
2271
2272 return 1;
2273 }
2274
2275 #define TX_STATUS_ENTRY(x) case TX_STATUS_FAIL_ ## x: return #x
2276
2277 const char *iwl_get_tx_fail_reason(u32 status)
2278 {
2279 switch (status & TX_STATUS_MSK) {
2280 case TX_STATUS_SUCCESS:
2281 return "SUCCESS";
2282 TX_STATUS_ENTRY(SHORT_LIMIT);
2283 TX_STATUS_ENTRY(LONG_LIMIT);
2284 TX_STATUS_ENTRY(FIFO_UNDERRUN);
2285 TX_STATUS_ENTRY(MGMNT_ABORT);
2286 TX_STATUS_ENTRY(NEXT_FRAG);
2287 TX_STATUS_ENTRY(LIFE_EXPIRE);
2288 TX_STATUS_ENTRY(DEST_PS);
2289 TX_STATUS_ENTRY(ABORTED);
2290 TX_STATUS_ENTRY(BT_RETRY);
2291 TX_STATUS_ENTRY(STA_INVALID);
2292 TX_STATUS_ENTRY(FRAG_DROPPED);
2293 TX_STATUS_ENTRY(TID_DISABLE);
2294 TX_STATUS_ENTRY(FRAME_FLUSHED);
2295 TX_STATUS_ENTRY(INSUFFICIENT_CF_POLL);
2296 TX_STATUS_ENTRY(TX_LOCKED);
2297 TX_STATUS_ENTRY(NO_BEACON_ON_RADAR);
2298 }
2299
2300 return "UNKNOWN";
2301 }
2302
2303 /**
2304 * iwl_scan_cancel - Cancel any currently executing HW scan
2305 *
2306 * NOTE: priv->mutex is not required before calling this function
2307 */
2308 static int iwl_scan_cancel(struct iwl_priv *priv)
2309 {
2310 if (!test_bit(STATUS_SCAN_HW, &priv->status)) {
2311 clear_bit(STATUS_SCANNING, &priv->status);
2312 return 0;
2313 }
2314
2315 if (test_bit(STATUS_SCANNING, &priv->status)) {
2316 if (!test_bit(STATUS_SCAN_ABORTING, &priv->status)) {
2317 IWL_DEBUG_SCAN("Queuing scan abort.\n");
2318 set_bit(STATUS_SCAN_ABORTING, &priv->status);
2319 queue_work(priv->workqueue, &priv->abort_scan);
2320
2321 } else
2322 IWL_DEBUG_SCAN("Scan abort already in progress.\n");
2323
2324 return test_bit(STATUS_SCANNING, &priv->status);
2325 }
2326
2327 return 0;
2328 }
2329
2330 /**
2331 * iwl_scan_cancel_timeout - Cancel any currently executing HW scan
2332 * @ms: amount of time to wait (in milliseconds) for scan to abort
2333 *
2334 * NOTE: priv->mutex must be held before calling this function
2335 */
2336 static int iwl_scan_cancel_timeout(struct iwl_priv *priv, unsigned long ms)
2337 {
2338 unsigned long now = jiffies;
2339 int ret;
2340
2341 ret = iwl_scan_cancel(priv);
2342 if (ret && ms) {
2343 mutex_unlock(&priv->mutex);
2344 while (!time_after(jiffies, now + msecs_to_jiffies(ms)) &&
2345 test_bit(STATUS_SCANNING, &priv->status))
2346 msleep(1);
2347 mutex_lock(&priv->mutex);
2348
2349 return test_bit(STATUS_SCANNING, &priv->status);
2350 }
2351
2352 return ret;
2353 }
2354
2355 static void iwl_sequence_reset(struct iwl_priv *priv)
2356 {
2357 /* Reset ieee stats */
2358
2359 /* We don't reset the net_device_stats (ieee->stats) on
2360 * re-association */
2361
2362 priv->last_seq_num = -1;
2363 priv->last_frag_num = -1;
2364 priv->last_packet_time = 0;
2365
2366 iwl_scan_cancel(priv);
2367 }
2368
2369 #define MAX_UCODE_BEACON_INTERVAL 4096
2370 #define INTEL_CONN_LISTEN_INTERVAL __constant_cpu_to_le16(0xA)
2371
2372 static __le16 iwl_adjust_beacon_interval(u16 beacon_val)
2373 {
2374 u16 new_val = 0;
2375 u16 beacon_factor = 0;
2376
2377 beacon_factor =
2378 (beacon_val + MAX_UCODE_BEACON_INTERVAL)
2379 / MAX_UCODE_BEACON_INTERVAL;
2380 new_val = beacon_val / beacon_factor;
2381
2382 return cpu_to_le16(new_val);
2383 }
2384
2385 static void iwl_setup_rxon_timing(struct iwl_priv *priv)
2386 {
2387 u64 interval_tm_unit;
2388 u64 tsf, result;
2389 unsigned long flags;
2390 struct ieee80211_conf *conf = NULL;
2391 u16 beacon_int = 0;
2392
2393 conf = ieee80211_get_hw_conf(priv->hw);
2394
2395 spin_lock_irqsave(&priv->lock, flags);
2396 priv->rxon_timing.timestamp.dw[1] = cpu_to_le32(priv->timestamp1);
2397 priv->rxon_timing.timestamp.dw[0] = cpu_to_le32(priv->timestamp0);
2398
2399 priv->rxon_timing.listen_interval = INTEL_CONN_LISTEN_INTERVAL;
2400
2401 tsf = priv->timestamp1;
2402 tsf = ((tsf << 32) | priv->timestamp0);
2403
2404 beacon_int = priv->beacon_int;
2405 spin_unlock_irqrestore(&priv->lock, flags);
2406
2407 if (priv->iw_mode == IEEE80211_IF_TYPE_STA) {
2408 if (beacon_int == 0) {
2409 priv->rxon_timing.beacon_interval = cpu_to_le16(100);
2410 priv->rxon_timing.beacon_init_val = cpu_to_le32(102400);
2411 } else {
2412 priv->rxon_timing.beacon_interval =
2413 cpu_to_le16(beacon_int);
2414 priv->rxon_timing.beacon_interval =
2415 iwl_adjust_beacon_interval(
2416 le16_to_cpu(priv->rxon_timing.beacon_interval));
2417 }
2418
2419 priv->rxon_timing.atim_window = 0;
2420 } else {
2421 priv->rxon_timing.beacon_interval =
2422 iwl_adjust_beacon_interval(conf->beacon_int);
2423 /* TODO: we need to get atim_window from upper stack
2424 * for now we set to 0 */
2425 priv->rxon_timing.atim_window = 0;
2426 }
2427
2428 interval_tm_unit =
2429 (le16_to_cpu(priv->rxon_timing.beacon_interval) * 1024);
2430 result = do_div(tsf, interval_tm_unit);
2431 priv->rxon_timing.beacon_init_val =
2432 cpu_to_le32((u32) ((u64) interval_tm_unit - result));
2433
2434 IWL_DEBUG_ASSOC
2435 ("beacon interval %d beacon timer %d beacon tim %d\n",
2436 le16_to_cpu(priv->rxon_timing.beacon_interval),
2437 le32_to_cpu(priv->rxon_timing.beacon_init_val),
2438 le16_to_cpu(priv->rxon_timing.atim_window));
2439 }
2440
2441 static int iwl_scan_initiate(struct iwl_priv *priv)
2442 {
2443 if (priv->iw_mode == IEEE80211_IF_TYPE_AP) {
2444 IWL_ERROR("APs don't scan.\n");
2445 return 0;
2446 }
2447
2448 if (!iwl_is_ready_rf(priv)) {
2449 IWL_DEBUG_SCAN("Aborting scan due to not ready.\n");
2450 return -EIO;
2451 }
2452
2453 if (test_bit(STATUS_SCANNING, &priv->status)) {
2454 IWL_DEBUG_SCAN("Scan already in progress.\n");
2455 return -EAGAIN;
2456 }
2457
2458 if (test_bit(STATUS_SCAN_ABORTING, &priv->status)) {
2459 IWL_DEBUG_SCAN("Scan request while abort pending. "
2460 "Queuing.\n");
2461 return -EAGAIN;
2462 }
2463
2464 IWL_DEBUG_INFO("Starting scan...\n");
2465 priv->scan_bands = 2;
2466 set_bit(STATUS_SCANNING, &priv->status);
2467 priv->scan_start = jiffies;
2468 priv->scan_pass_start = priv->scan_start;
2469
2470 queue_work(priv->workqueue, &priv->request_scan);
2471
2472 return 0;
2473 }
2474
2475 static int iwl_set_rxon_hwcrypto(struct iwl_priv *priv, int hw_decrypt)
2476 {
2477 struct iwl_rxon_cmd *rxon = &priv->staging_rxon;
2478
2479 if (hw_decrypt)
2480 rxon->filter_flags &= ~RXON_FILTER_DIS_DECRYPT_MSK;
2481 else
2482 rxon->filter_flags |= RXON_FILTER_DIS_DECRYPT_MSK;
2483
2484 return 0;
2485 }
2486
2487 static void iwl_set_flags_for_phymode(struct iwl_priv *priv, u8 phymode)
2488 {
2489 if (phymode == MODE_IEEE80211A) {
2490 priv->staging_rxon.flags &=
2491 ~(RXON_FLG_BAND_24G_MSK | RXON_FLG_AUTO_DETECT_MSK
2492 | RXON_FLG_CCK_MSK);
2493 priv->staging_rxon.flags |= RXON_FLG_SHORT_SLOT_MSK;
2494 } else {
2495 /* Copied from iwl_bg_post_associate() */
2496 if (priv->assoc_capability & WLAN_CAPABILITY_SHORT_SLOT_TIME)
2497 priv->staging_rxon.flags |= RXON_FLG_SHORT_SLOT_MSK;
2498 else
2499 priv->staging_rxon.flags &= ~RXON_FLG_SHORT_SLOT_MSK;
2500
2501 if (priv->iw_mode == IEEE80211_IF_TYPE_IBSS)
2502 priv->staging_rxon.flags &= ~RXON_FLG_SHORT_SLOT_MSK;
2503
2504 priv->staging_rxon.flags |= RXON_FLG_BAND_24G_MSK;
2505 priv->staging_rxon.flags |= RXON_FLG_AUTO_DETECT_MSK;
2506 priv->staging_rxon.flags &= ~RXON_FLG_CCK_MSK;
2507 }
2508 }
2509
2510 /*
2511 * initilize rxon structure with default values fromm eeprom
2512 */
2513 static void iwl_connection_init_rx_config(struct iwl_priv *priv)
2514 {
2515 const struct iwl_channel_info *ch_info;
2516
2517 memset(&priv->staging_rxon, 0, sizeof(priv->staging_rxon));
2518
2519 switch (priv->iw_mode) {
2520 case IEEE80211_IF_TYPE_AP:
2521 priv->staging_rxon.dev_type = RXON_DEV_TYPE_AP;
2522 break;
2523
2524 case IEEE80211_IF_TYPE_STA:
2525 priv->staging_rxon.dev_type = RXON_DEV_TYPE_ESS;
2526 priv->staging_rxon.filter_flags = RXON_FILTER_ACCEPT_GRP_MSK;
2527 break;
2528
2529 case IEEE80211_IF_TYPE_IBSS:
2530 priv->staging_rxon.dev_type = RXON_DEV_TYPE_IBSS;
2531 priv->staging_rxon.flags = RXON_FLG_SHORT_PREAMBLE_MSK;
2532 priv->staging_rxon.filter_flags = RXON_FILTER_BCON_AWARE_MSK |
2533 RXON_FILTER_ACCEPT_GRP_MSK;
2534 break;
2535
2536 case IEEE80211_IF_TYPE_MNTR:
2537 priv->staging_rxon.dev_type = RXON_DEV_TYPE_SNIFFER;
2538 priv->staging_rxon.filter_flags = RXON_FILTER_PROMISC_MSK |
2539 RXON_FILTER_CTL2HOST_MSK | RXON_FILTER_ACCEPT_GRP_MSK;
2540 break;
2541 }
2542
2543 #if 0
2544 /* TODO: Figure out when short_preamble would be set and cache from
2545 * that */
2546 if (!hw_to_local(priv->hw)->short_preamble)
2547 priv->staging_rxon.flags &= ~RXON_FLG_SHORT_PREAMBLE_MSK;
2548 else
2549 priv->staging_rxon.flags |= RXON_FLG_SHORT_PREAMBLE_MSK;
2550 #endif
2551
2552 ch_info = iwl_get_channel_info(priv, priv->phymode,
2553 le16_to_cpu(priv->staging_rxon.channel));
2554
2555 if (!ch_info)
2556 ch_info = &priv->channel_info[0];
2557
2558 /*
2559 * in some case A channels are all non IBSS
2560 * in this case force B/G channel
2561 */
2562 if ((priv->iw_mode == IEEE80211_IF_TYPE_IBSS) &&
2563 !(is_channel_ibss(ch_info)))
2564 ch_info = &priv->channel_info[0];
2565
2566 priv->staging_rxon.channel = cpu_to_le16(ch_info->channel);
2567 if (is_channel_a_band(ch_info))
2568 priv->phymode = MODE_IEEE80211A;
2569 else
2570 priv->phymode = MODE_IEEE80211G;
2571
2572 iwl_set_flags_for_phymode(priv, priv->phymode);
2573
2574 priv->staging_rxon.ofdm_basic_rates =
2575 (IWL_OFDM_RATES_MASK >> IWL_FIRST_OFDM_RATE) & 0xFF;
2576 priv->staging_rxon.cck_basic_rates =
2577 (IWL_CCK_RATES_MASK >> IWL_FIRST_CCK_RATE) & 0xF;
2578
2579 priv->staging_rxon.flags &= ~(RXON_FLG_CHANNEL_MODE_MIXED_MSK |
2580 RXON_FLG_CHANNEL_MODE_PURE_40_MSK);
2581 memcpy(priv->staging_rxon.node_addr, priv->mac_addr, ETH_ALEN);
2582 memcpy(priv->staging_rxon.wlap_bssid_addr, priv->mac_addr, ETH_ALEN);
2583 priv->staging_rxon.ofdm_ht_single_stream_basic_rates = 0xff;
2584 priv->staging_rxon.ofdm_ht_dual_stream_basic_rates = 0xff;
2585 iwl4965_set_rxon_chain(priv);
2586 }
2587
2588 static int iwl_set_mode(struct iwl_priv *priv, int mode)
2589 {
2590 if (!iwl_is_ready_rf(priv))
2591 return -EAGAIN;
2592
2593 if (mode == IEEE80211_IF_TYPE_IBSS) {
2594 const struct iwl_channel_info *ch_info;
2595
2596 ch_info = iwl_get_channel_info(priv,
2597 priv->phymode,
2598 le16_to_cpu(priv->staging_rxon.channel));
2599
2600 if (!ch_info || !is_channel_ibss(ch_info)) {
2601 IWL_ERROR("channel %d not IBSS channel\n",
2602 le16_to_cpu(priv->staging_rxon.channel));
2603 return -EINVAL;
2604 }
2605 }
2606
2607 cancel_delayed_work(&priv->scan_check);
2608 if (iwl_scan_cancel_timeout(priv, 100)) {
2609 IWL_WARNING("Aborted scan still in progress after 100ms\n");
2610 IWL_DEBUG_MAC80211("leaving - scan abort failed.\n");
2611 return -EAGAIN;
2612 }
2613
2614 priv->iw_mode = mode;
2615
2616 iwl_connection_init_rx_config(priv);
2617 memcpy(priv->staging_rxon.node_addr, priv->mac_addr, ETH_ALEN);
2618
2619 iwl_clear_stations_table(priv);
2620
2621 iwl_commit_rxon(priv);
2622
2623 return 0;
2624 }
2625
2626 static void iwl_build_tx_cmd_hwcrypto(struct iwl_priv *priv,
2627 struct ieee80211_tx_control *ctl,
2628 struct iwl_cmd *cmd,
2629 struct sk_buff *skb_frag,
2630 int last_frag)
2631 {
2632 struct iwl_hw_key *keyinfo = &priv->stations[ctl->key_idx].keyinfo;
2633
2634 switch (keyinfo->alg) {
2635 case ALG_CCMP:
2636 cmd->cmd.tx.sec_ctl = TX_CMD_SEC_CCM;
2637 memcpy(cmd->cmd.tx.key, keyinfo->key, keyinfo->keylen);
2638 IWL_DEBUG_TX("tx_cmd with aes hwcrypto\n");
2639 break;
2640
2641 case ALG_TKIP:
2642 #if 0
2643 cmd->cmd.tx.sec_ctl = TX_CMD_SEC_TKIP;
2644
2645 if (last_frag)
2646 memcpy(cmd->cmd.tx.tkip_mic.byte, skb_frag->tail - 8,
2647 8);
2648 else
2649 memset(cmd->cmd.tx.tkip_mic.byte, 0, 8);
2650 #endif
2651 break;
2652
2653 case ALG_WEP:
2654 cmd->cmd.tx.sec_ctl = TX_CMD_SEC_WEP |
2655 (ctl->key_idx & TX_CMD_SEC_MSK) << TX_CMD_SEC_SHIFT;
2656
2657 if (keyinfo->keylen == 13)
2658 cmd->cmd.tx.sec_ctl |= TX_CMD_SEC_KEY128;
2659
2660 memcpy(&cmd->cmd.tx.key[3], keyinfo->key, keyinfo->keylen);
2661
2662 IWL_DEBUG_TX("Configuring packet for WEP encryption "
2663 "with key %d\n", ctl->key_idx);
2664 break;
2665
2666 default:
2667 printk(KERN_ERR "Unknown encode alg %d\n", keyinfo->alg);
2668 break;
2669 }
2670 }
2671
2672 /*
2673 * handle build REPLY_TX command notification.
2674 */
2675 static void iwl_build_tx_cmd_basic(struct iwl_priv *priv,
2676 struct iwl_cmd *cmd,
2677 struct ieee80211_tx_control *ctrl,
2678 struct ieee80211_hdr *hdr,
2679 int is_unicast, u8 std_id)
2680 {
2681 __le16 *qc;
2682 u16 fc = le16_to_cpu(hdr->frame_control);
2683 __le32 tx_flags = cmd->cmd.tx.tx_flags;
2684
2685 cmd->cmd.tx.stop_time.life_time = TX_CMD_LIFE_TIME_INFINITE;
2686 if (!(ctrl->flags & IEEE80211_TXCTL_NO_ACK)) {
2687 tx_flags |= TX_CMD_FLG_ACK_MSK;
2688 if ((fc & IEEE80211_FCTL_FTYPE) == IEEE80211_FTYPE_MGMT)
2689 tx_flags |= TX_CMD_FLG_SEQ_CTL_MSK;
2690 if (ieee80211_is_probe_response(fc) &&
2691 !(le16_to_cpu(hdr->seq_ctrl) & 0xf))
2692 tx_flags |= TX_CMD_FLG_TSF_MSK;
2693 } else {
2694 tx_flags &= (~TX_CMD_FLG_ACK_MSK);
2695 tx_flags |= TX_CMD_FLG_SEQ_CTL_MSK;
2696 }
2697
2698 cmd->cmd.tx.sta_id = std_id;
2699 if (ieee80211_get_morefrag(hdr))
2700 tx_flags |= TX_CMD_FLG_MORE_FRAG_MSK;
2701
2702 qc = ieee80211_get_qos_ctrl(hdr);
2703 if (qc) {
2704 cmd->cmd.tx.tid_tspec = (u8) (le16_to_cpu(*qc) & 0xf);
2705 tx_flags &= ~TX_CMD_FLG_SEQ_CTL_MSK;
2706 } else
2707 tx_flags |= TX_CMD_FLG_SEQ_CTL_MSK;
2708
2709 if (ctrl->flags & IEEE80211_TXCTL_USE_RTS_CTS) {
2710 tx_flags |= TX_CMD_FLG_RTS_MSK;
2711 tx_flags &= ~TX_CMD_FLG_CTS_MSK;
2712 } else if (ctrl->flags & IEEE80211_TXCTL_USE_CTS_PROTECT) {
2713 tx_flags &= ~TX_CMD_FLG_RTS_MSK;
2714 tx_flags |= TX_CMD_FLG_CTS_MSK;
2715 }
2716
2717 if ((tx_flags & TX_CMD_FLG_RTS_MSK) || (tx_flags & TX_CMD_FLG_CTS_MSK))
2718 tx_flags |= TX_CMD_FLG_FULL_TXOP_PROT_MSK;
2719
2720 tx_flags &= ~(TX_CMD_FLG_ANT_SEL_MSK);
2721 if ((fc & IEEE80211_FCTL_FTYPE) == IEEE80211_FTYPE_MGMT) {
2722 if ((fc & IEEE80211_FCTL_STYPE) == IEEE80211_STYPE_ASSOC_REQ ||
2723 (fc & IEEE80211_FCTL_STYPE) == IEEE80211_STYPE_REASSOC_REQ)
2724 cmd->cmd.tx.timeout.pm_frame_timeout =
2725 cpu_to_le16(3);
2726 else
2727 cmd->cmd.tx.timeout.pm_frame_timeout =
2728 cpu_to_le16(2);
2729 } else
2730 cmd->cmd.tx.timeout.pm_frame_timeout = 0;
2731
2732 cmd->cmd.tx.driver_txop = 0;
2733 cmd->cmd.tx.tx_flags = tx_flags;
2734 cmd->cmd.tx.next_frame_len = 0;
2735 }
2736
2737 static int iwl_get_sta_id(struct iwl_priv *priv, struct ieee80211_hdr *hdr)
2738 {
2739 int sta_id;
2740 u16 fc = le16_to_cpu(hdr->frame_control);
2741 DECLARE_MAC_BUF(mac);
2742
2743 /* If this frame is broadcast or not data then use the broadcast
2744 * station id */
2745 if (((fc & IEEE80211_FCTL_FTYPE) != IEEE80211_FTYPE_DATA) ||
2746 is_multicast_ether_addr(hdr->addr1))
2747 return priv->hw_setting.bcast_sta_id;
2748
2749 switch (priv->iw_mode) {
2750
2751 /* If this frame is part of a BSS network (we're a station), then
2752 * we use the AP's station id */
2753 case IEEE80211_IF_TYPE_STA:
2754 return IWL_AP_ID;
2755
2756 /* If we are an AP, then find the station, or use BCAST */
2757 case IEEE80211_IF_TYPE_AP:
2758 sta_id = iwl_hw_find_station(priv, hdr->addr1);
2759 if (sta_id != IWL_INVALID_STATION)
2760 return sta_id;
2761 return priv->hw_setting.bcast_sta_id;
2762
2763 /* If this frame is part of a IBSS network, then we use the
2764 * target specific station id */
2765 case IEEE80211_IF_TYPE_IBSS:
2766 sta_id = iwl_hw_find_station(priv, hdr->addr1);
2767 if (sta_id != IWL_INVALID_STATION)
2768 return sta_id;
2769
2770 sta_id = iwl_add_station(priv, hdr->addr1, 0, CMD_ASYNC);
2771
2772 if (sta_id != IWL_INVALID_STATION)
2773 return sta_id;
2774
2775 IWL_DEBUG_DROP("Station %s not in station map. "
2776 "Defaulting to broadcast...\n",
2777 print_mac(mac, hdr->addr1));
2778 iwl_print_hex_dump(IWL_DL_DROP, (u8 *) hdr, sizeof(*hdr));
2779 return priv->hw_setting.bcast_sta_id;
2780
2781 default:
2782 IWL_WARNING("Unkown mode of operation: %d", priv->iw_mode);
2783 return priv->hw_setting.bcast_sta_id;
2784 }
2785 }
2786
2787 /*
2788 * start REPLY_TX command process
2789 */
2790 static int iwl_tx_skb(struct iwl_priv *priv,
2791 struct sk_buff *skb, struct ieee80211_tx_control *ctl)
2792 {
2793 struct ieee80211_hdr *hdr = (struct ieee80211_hdr *)skb->data;
2794 struct iwl_tfd_frame *tfd;
2795 u32 *control_flags;
2796 int txq_id = ctl->queue;
2797 struct iwl_tx_queue *txq = NULL;
2798 struct iwl_queue *q = NULL;
2799 dma_addr_t phys_addr;
2800 dma_addr_t txcmd_phys;
2801 struct iwl_cmd *out_cmd = NULL;
2802 u16 len, idx, len_org;
2803 u8 id, hdr_len, unicast;
2804 u8 sta_id;
2805 u16 seq_number = 0;
2806 u16 fc;
2807 __le16 *qc;
2808 u8 wait_write_ptr = 0;
2809 unsigned long flags;
2810 int rc;
2811
2812 spin_lock_irqsave(&priv->lock, flags);
2813 if (iwl_is_rfkill(priv)) {
2814 IWL_DEBUG_DROP("Dropping - RF KILL\n");
2815 goto drop_unlock;
2816 }
2817
2818 if (!priv->interface_id) {
2819 IWL_DEBUG_DROP("Dropping - !priv->interface_id\n");
2820 goto drop_unlock;
2821 }
2822
2823 if ((ctl->tx_rate & 0xFF) == IWL_INVALID_RATE) {
2824 IWL_ERROR("ERROR: No TX rate available.\n");
2825 goto drop_unlock;
2826 }
2827
2828 unicast = !is_multicast_ether_addr(hdr->addr1);
2829 id = 0;
2830
2831 fc = le16_to_cpu(hdr->frame_control);
2832
2833 #ifdef CONFIG_IWLWIFI_DEBUG
2834 if (ieee80211_is_auth(fc))
2835 IWL_DEBUG_TX("Sending AUTH frame\n");
2836 else if (ieee80211_is_assoc_request(fc))
2837 IWL_DEBUG_TX("Sending ASSOC frame\n");
2838 else if (ieee80211_is_reassoc_request(fc))
2839 IWL_DEBUG_TX("Sending REASSOC frame\n");
2840 #endif
2841
2842 if (!iwl_is_associated(priv) &&
2843 ((fc & IEEE80211_FCTL_FTYPE) == IEEE80211_FTYPE_DATA)) {
2844 IWL_DEBUG_DROP("Dropping - !iwl_is_associated\n");
2845 goto drop_unlock;
2846 }
2847
2848 spin_unlock_irqrestore(&priv->lock, flags);
2849
2850 hdr_len = ieee80211_get_hdrlen(fc);
2851 sta_id = iwl_get_sta_id(priv, hdr);
2852 if (sta_id == IWL_INVALID_STATION) {
2853 DECLARE_MAC_BUF(mac);
2854
2855 IWL_DEBUG_DROP("Dropping - INVALID STATION: %s\n",
2856 print_mac(mac, hdr->addr1));
2857 goto drop;
2858 }
2859
2860 IWL_DEBUG_RATE("station Id %d\n", sta_id);
2861
2862 qc = ieee80211_get_qos_ctrl(hdr);
2863 if (qc) {
2864 u8 tid = (u8)(le16_to_cpu(*qc) & 0xf);
2865 seq_number = priv->stations[sta_id].tid[tid].seq_number &
2866 IEEE80211_SCTL_SEQ;
2867 hdr->seq_ctrl = cpu_to_le16(seq_number) |
2868 (hdr->seq_ctrl &
2869 __constant_cpu_to_le16(IEEE80211_SCTL_FRAG));
2870 seq_number += 0x10;
2871 #ifdef CONFIG_IWLWIFI_HT
2872 #ifdef CONFIG_IWLWIFI_HT_AGG
2873 /* aggregation is on for this <sta,tid> */
2874 if (ctl->flags & IEEE80211_TXCTL_HT_MPDU_AGG)
2875 txq_id = priv->stations[sta_id].tid[tid].agg.txq_id;
2876 #endif /* CONFIG_IWLWIFI_HT_AGG */
2877 #endif /* CONFIG_IWLWIFI_HT */
2878 }
2879 txq = &priv->txq[txq_id];
2880 q = &txq->q;
2881
2882 spin_lock_irqsave(&priv->lock, flags);
2883
2884 tfd = &txq->bd[q->first_empty];
2885 memset(tfd, 0, sizeof(*tfd));
2886 control_flags = (u32 *) tfd;
2887 idx = get_cmd_index(q, q->first_empty, 0);
2888
2889 memset(&(txq->txb[q->first_empty]), 0, sizeof(struct iwl_tx_info));
2890 txq->txb[q->first_empty].skb[0] = skb;
2891 memcpy(&(txq->txb[q->first_empty].status.control),
2892 ctl, sizeof(struct ieee80211_tx_control));
2893 out_cmd = &txq->cmd[idx];
2894 memset(&out_cmd->hdr, 0, sizeof(out_cmd->hdr));
2895 memset(&out_cmd->cmd.tx, 0, sizeof(out_cmd->cmd.tx));
2896 out_cmd->hdr.cmd = REPLY_TX;
2897 out_cmd->hdr.sequence = cpu_to_le16((u16)(QUEUE_TO_SEQ(txq_id) |
2898 INDEX_TO_SEQ(q->first_empty)));
2899 /* copy frags header */
2900 memcpy(out_cmd->cmd.tx.hdr, hdr, hdr_len);
2901
2902 /* hdr = (struct ieee80211_hdr *)out_cmd->cmd.tx.hdr; */
2903 len = priv->hw_setting.tx_cmd_len +
2904 sizeof(struct iwl_cmd_header) + hdr_len;
2905
2906 len_org = len;
2907 len = (len + 3) & ~3;
2908
2909 if (len_org != len)
2910 len_org = 1;
2911 else
2912 len_org = 0;
2913
2914 txcmd_phys = txq->dma_addr_cmd + sizeof(struct iwl_cmd) * idx +
2915 offsetof(struct iwl_cmd, hdr);
2916
2917 iwl_hw_txq_attach_buf_to_tfd(priv, tfd, txcmd_phys, len);
2918
2919 if (!(ctl->flags & IEEE80211_TXCTL_DO_NOT_ENCRYPT))
2920 iwl_build_tx_cmd_hwcrypto(priv, ctl, out_cmd, skb, 0);
2921
2922 /* 802.11 null functions have no payload... */
2923 len = skb->len - hdr_len;
2924 if (len) {
2925 phys_addr = pci_map_single(priv->pci_dev, skb->data + hdr_len,
2926 len, PCI_DMA_TODEVICE);
2927 iwl_hw_txq_attach_buf_to_tfd(priv, tfd, phys_addr, len);
2928 }
2929
2930 if (len_org)
2931 out_cmd->cmd.tx.tx_flags |= TX_CMD_FLG_MH_PAD_MSK;
2932
2933 len = (u16)skb->len;
2934 out_cmd->cmd.tx.len = cpu_to_le16(len);
2935
2936 /* TODO need this for burst mode later on */
2937 iwl_build_tx_cmd_basic(priv, out_cmd, ctl, hdr, unicast, sta_id);
2938
2939 /* set is_hcca to 0; it probably will never be implemented */
2940 iwl_hw_build_tx_cmd_rate(priv, out_cmd, ctl, hdr, sta_id, 0);
2941
2942 iwl4965_tx_cmd(priv, out_cmd, sta_id, txcmd_phys,
2943 hdr, hdr_len, ctl, NULL);
2944
2945 if (!ieee80211_get_morefrag(hdr)) {
2946 txq->need_update = 1;
2947 if (qc) {
2948 u8 tid = (u8)(le16_to_cpu(*qc) & 0xf);
2949 priv->stations[sta_id].tid[tid].seq_number = seq_number;
2950 }
2951 } else {
2952 wait_write_ptr = 1;
2953 txq->need_update = 0;
2954 }
2955
2956 iwl_print_hex_dump(IWL_DL_TX, out_cmd->cmd.payload,
2957 sizeof(out_cmd->cmd.tx));
2958
2959 iwl_print_hex_dump(IWL_DL_TX, (u8 *)out_cmd->cmd.tx.hdr,
2960 ieee80211_get_hdrlen(fc));
2961
2962 iwl4965_tx_queue_update_wr_ptr(priv, txq, len);
2963
2964 q->first_empty = iwl_queue_inc_wrap(q->first_empty, q->n_bd);
2965 rc = iwl_tx_queue_update_write_ptr(priv, txq);
2966 spin_unlock_irqrestore(&priv->lock, flags);
2967
2968 if (rc)
2969 return rc;
2970
2971 if ((iwl_queue_space(q) < q->high_mark)
2972 && priv->mac80211_registered) {
2973 if (wait_write_ptr) {
2974 spin_lock_irqsave(&priv->lock, flags);
2975 txq->need_update = 1;
2976 iwl_tx_queue_update_write_ptr(priv, txq);
2977 spin_unlock_irqrestore(&priv->lock, flags);
2978 }
2979
2980 ieee80211_stop_queue(priv->hw, ctl->queue);
2981 }
2982
2983 return 0;
2984
2985 drop_unlock:
2986 spin_unlock_irqrestore(&priv->lock, flags);
2987 drop:
2988 return -1;
2989 }
2990
2991 static void iwl_set_rate(struct iwl_priv *priv)
2992 {
2993 const struct ieee80211_hw_mode *hw = NULL;
2994 struct ieee80211_rate *rate;
2995 int i;
2996
2997 hw = iwl_get_hw_mode(priv, priv->phymode);
2998
2999 priv->active_rate = 0;
3000 priv->active_rate_basic = 0;
3001
3002 IWL_DEBUG_RATE("Setting rates for 802.11%c\n",
3003 hw->mode == MODE_IEEE80211A ?
3004 'a' : ((hw->mode == MODE_IEEE80211B) ? 'b' : 'g'));
3005
3006 for (i = 0; i < hw->num_rates; i++) {
3007 rate = &(hw->rates[i]);
3008 if ((rate->val < IWL_RATE_COUNT) &&
3009 (rate->flags & IEEE80211_RATE_SUPPORTED)) {
3010 IWL_DEBUG_RATE("Adding rate index %d (plcp %d)%s\n",
3011 rate->val, iwl_rates[rate->val].plcp,
3012 (rate->flags & IEEE80211_RATE_BASIC) ?
3013 "*" : "");
3014 priv->active_rate |= (1 << rate->val);
3015 if (rate->flags & IEEE80211_RATE_BASIC)
3016 priv->active_rate_basic |= (1 << rate->val);
3017 } else
3018 IWL_DEBUG_RATE("Not adding rate %d (plcp %d)\n",
3019 rate->val, iwl_rates[rate->val].plcp);
3020 }
3021
3022 IWL_DEBUG_RATE("Set active_rate = %0x, active_rate_basic = %0x\n",
3023 priv->active_rate, priv->active_rate_basic);
3024
3025 /*
3026 * If a basic rate is configured, then use it (adding IWL_RATE_1M_MASK)
3027 * otherwise set it to the default of all CCK rates and 6, 12, 24 for
3028 * OFDM
3029 */
3030 if (priv->active_rate_basic & IWL_CCK_BASIC_RATES_MASK)
3031 priv->staging_rxon.cck_basic_rates =
3032 ((priv->active_rate_basic &
3033 IWL_CCK_RATES_MASK) >> IWL_FIRST_CCK_RATE) & 0xF;
3034 else
3035 priv->staging_rxon.cck_basic_rates =
3036 (IWL_CCK_BASIC_RATES_MASK >> IWL_FIRST_CCK_RATE) & 0xF;
3037
3038 if (priv->active_rate_basic & IWL_OFDM_BASIC_RATES_MASK)
3039 priv->staging_rxon.ofdm_basic_rates =
3040 ((priv->active_rate_basic &
3041 (IWL_OFDM_BASIC_RATES_MASK | IWL_RATE_6M_MASK)) >>
3042 IWL_FIRST_OFDM_RATE) & 0xFF;
3043 else
3044 priv->staging_rxon.ofdm_basic_rates =
3045 (IWL_OFDM_BASIC_RATES_MASK >> IWL_FIRST_OFDM_RATE) & 0xFF;
3046 }
3047
3048 static void iwl_radio_kill_sw(struct iwl_priv *priv, int disable_radio)
3049 {
3050 unsigned long flags;
3051
3052 if (!!disable_radio == test_bit(STATUS_RF_KILL_SW, &priv->status))
3053 return;
3054
3055 IWL_DEBUG_RF_KILL("Manual SW RF KILL set to: RADIO %s\n",
3056 disable_radio ? "OFF" : "ON");
3057
3058 if (disable_radio) {
3059 iwl_scan_cancel(priv);
3060 /* FIXME: This is a workaround for AP */
3061 if (priv->iw_mode != IEEE80211_IF_TYPE_AP) {
3062 spin_lock_irqsave(&priv->lock, flags);
3063 iwl_write32(priv, CSR_UCODE_DRV_GP1_SET,
3064 CSR_UCODE_SW_BIT_RFKILL);
3065 spin_unlock_irqrestore(&priv->lock, flags);
3066 iwl_send_card_state(priv, CARD_STATE_CMD_DISABLE, 0);
3067 set_bit(STATUS_RF_KILL_SW, &priv->status);
3068 }
3069 return;
3070 }
3071
3072 spin_lock_irqsave(&priv->lock, flags);
3073 iwl_write32(priv, CSR_UCODE_DRV_GP1_CLR, CSR_UCODE_SW_BIT_RFKILL);
3074
3075 clear_bit(STATUS_RF_KILL_SW, &priv->status);
3076 spin_unlock_irqrestore(&priv->lock, flags);
3077
3078 /* wake up ucode */
3079 msleep(10);
3080
3081 spin_lock_irqsave(&priv->lock, flags);
3082 iwl_read32(priv, CSR_UCODE_DRV_GP1);
3083 if (!iwl_grab_restricted_access(priv))
3084 iwl_release_restricted_access(priv);
3085 spin_unlock_irqrestore(&priv->lock, flags);
3086
3087 if (test_bit(STATUS_RF_KILL_HW, &priv->status)) {
3088 IWL_DEBUG_RF_KILL("Can not turn radio back on - "
3089 "disabled by HW switch\n");
3090 return;
3091 }
3092
3093 queue_work(priv->workqueue, &priv->restart);
3094 return;
3095 }
3096
3097 void iwl_set_decrypted_flag(struct iwl_priv *priv, struct sk_buff *skb,
3098 u32 decrypt_res, struct ieee80211_rx_status *stats)
3099 {
3100 u16 fc =
3101 le16_to_cpu(((struct ieee80211_hdr *)skb->data)->frame_control);
3102
3103 if (priv->active_rxon.filter_flags & RXON_FILTER_DIS_DECRYPT_MSK)
3104 return;
3105
3106 if (!(fc & IEEE80211_FCTL_PROTECTED))
3107 return;
3108
3109 IWL_DEBUG_RX("decrypt_res:0x%x\n", decrypt_res);
3110 switch (decrypt_res & RX_RES_STATUS_SEC_TYPE_MSK) {
3111 case RX_RES_STATUS_SEC_TYPE_TKIP:
3112 if ((decrypt_res & RX_RES_STATUS_DECRYPT_TYPE_MSK) ==
3113 RX_RES_STATUS_BAD_ICV_MIC)
3114 stats->flag |= RX_FLAG_MMIC_ERROR;
3115 case RX_RES_STATUS_SEC_TYPE_WEP:
3116 case RX_RES_STATUS_SEC_TYPE_CCMP:
3117 if ((decrypt_res & RX_RES_STATUS_DECRYPT_TYPE_MSK) ==
3118 RX_RES_STATUS_DECRYPT_OK) {
3119 IWL_DEBUG_RX("hw decrypt successfully!!!\n");
3120 stats->flag |= RX_FLAG_DECRYPTED;
3121 }
3122 break;
3123
3124 default:
3125 break;
3126 }
3127 }
3128
3129 void iwl_handle_data_packet_monitor(struct iwl_priv *priv,
3130 struct iwl_rx_mem_buffer *rxb,
3131 void *data, short len,
3132 struct ieee80211_rx_status *stats,
3133 u16 phy_flags)
3134 {
3135 struct iwl_rt_rx_hdr *iwl_rt;
3136
3137 /* First cache any information we need before we overwrite
3138 * the information provided in the skb from the hardware */
3139 s8 signal = stats->ssi;
3140 s8 noise = 0;
3141 int rate = stats->rate;
3142 u64 tsf = stats->mactime;
3143 __le16 phy_flags_hw = cpu_to_le16(phy_flags);
3144
3145 /* We received data from the HW, so stop the watchdog */
3146 if (len > IWL_RX_BUF_SIZE - sizeof(*iwl_rt)) {
3147 IWL_DEBUG_DROP("Dropping too large packet in monitor\n");
3148 return;
3149 }
3150
3151 /* copy the frame data to write after where the radiotap header goes */
3152 iwl_rt = (void *)rxb->skb->data;
3153 memmove(iwl_rt->payload, data, len);
3154
3155 iwl_rt->rt_hdr.it_version = PKTHDR_RADIOTAP_VERSION;
3156 iwl_rt->rt_hdr.it_pad = 0; /* always good to zero */
3157
3158 /* total header + data */
3159 iwl_rt->rt_hdr.it_len = cpu_to_le16(sizeof(*iwl_rt));
3160
3161 /* Set the size of the skb to the size of the frame */
3162 skb_put(rxb->skb, sizeof(*iwl_rt) + len);
3163
3164 /* Big bitfield of all the fields we provide in radiotap */
3165 iwl_rt->rt_hdr.it_present =
3166 cpu_to_le32((1 << IEEE80211_RADIOTAP_TSFT) |
3167 (1 << IEEE80211_RADIOTAP_FLAGS) |
3168 (1 << IEEE80211_RADIOTAP_RATE) |
3169 (1 << IEEE80211_RADIOTAP_CHANNEL) |
3170 (1 << IEEE80211_RADIOTAP_DBM_ANTSIGNAL) |
3171 (1 << IEEE80211_RADIOTAP_DBM_ANTNOISE) |
3172 (1 << IEEE80211_RADIOTAP_ANTENNA));
3173
3174 /* Zero the flags, we'll add to them as we go */
3175 iwl_rt->rt_flags = 0;
3176
3177 iwl_rt->rt_tsf = cpu_to_le64(tsf);
3178
3179 /* Convert to dBm */
3180 iwl_rt->rt_dbmsignal = signal;
3181 iwl_rt->rt_dbmnoise = noise;
3182
3183 /* Convert the channel frequency and set the flags */
3184 iwl_rt->rt_channelMHz = cpu_to_le16(stats->freq);
3185 if (!(phy_flags_hw & RX_RES_PHY_FLAGS_BAND_24_MSK))
3186 iwl_rt->rt_chbitmask =
3187 cpu_to_le16((IEEE80211_CHAN_OFDM | IEEE80211_CHAN_5GHZ));
3188 else if (phy_flags_hw & RX_RES_PHY_FLAGS_MOD_CCK_MSK)
3189 iwl_rt->rt_chbitmask =
3190 cpu_to_le16((IEEE80211_CHAN_CCK | IEEE80211_CHAN_2GHZ));
3191 else /* 802.11g */
3192 iwl_rt->rt_chbitmask =
3193 cpu_to_le16((IEEE80211_CHAN_OFDM | IEEE80211_CHAN_2GHZ));
3194
3195 rate = iwl_rate_index_from_plcp(rate);
3196 if (rate == -1)
3197 iwl_rt->rt_rate = 0;
3198 else
3199 iwl_rt->rt_rate = iwl_rates[rate].ieee;
3200
3201 /* antenna number */
3202 iwl_rt->rt_antenna =
3203 le16_to_cpu(phy_flags_hw & RX_RES_PHY_FLAGS_ANTENNA_MSK) >> 4;
3204
3205 /* set the preamble flag if we have it */
3206 if (phy_flags_hw & RX_RES_PHY_FLAGS_SHORT_PREAMBLE_MSK)
3207 iwl_rt->rt_flags |= IEEE80211_RADIOTAP_F_SHORTPRE;
3208
3209 IWL_DEBUG_RX("Rx packet of %d bytes.\n", rxb->skb->len);
3210
3211 stats->flag |= RX_FLAG_RADIOTAP;
3212 ieee80211_rx_irqsafe(priv->hw, rxb->skb, stats);
3213 rxb->skb = NULL;
3214 }
3215
3216
3217 #define IWL_PACKET_RETRY_TIME HZ
3218
3219 int is_duplicate_packet(struct iwl_priv *priv, struct ieee80211_hdr *header)
3220 {
3221 u16 sc = le16_to_cpu(header->seq_ctrl);
3222 u16 seq = (sc & IEEE80211_SCTL_SEQ) >> 4;
3223 u16 frag = sc & IEEE80211_SCTL_FRAG;
3224 u16 *last_seq, *last_frag;
3225 unsigned long *last_time;
3226
3227 switch (priv->iw_mode) {
3228 case IEEE80211_IF_TYPE_IBSS:{
3229 struct list_head *p;
3230 struct iwl_ibss_seq *entry = NULL;
3231 u8 *mac = header->addr2;
3232 int index = mac[5] & (IWL_IBSS_MAC_HASH_SIZE - 1);
3233
3234 __list_for_each(p, &priv->ibss_mac_hash[index]) {
3235 entry =
3236 list_entry(p, struct iwl_ibss_seq, list);
3237 if (!compare_ether_addr(entry->mac, mac))
3238 break;
3239 }
3240 if (p == &priv->ibss_mac_hash[index]) {
3241 entry = kzalloc(sizeof(*entry), GFP_ATOMIC);
3242 if (!entry) {
3243 IWL_ERROR
3244 ("Cannot malloc new mac entry\n");
3245 return 0;
3246 }
3247 memcpy(entry->mac, mac, ETH_ALEN);
3248 entry->seq_num = seq;
3249 entry->frag_num = frag;
3250 entry->packet_time = jiffies;
3251 list_add(&entry->list,
3252 &priv->ibss_mac_hash[index]);
3253 return 0;
3254 }
3255 last_seq = &entry->seq_num;
3256 last_frag = &entry->frag_num;
3257 last_time = &entry->packet_time;
3258 break;
3259 }
3260 case IEEE80211_IF_TYPE_STA:
3261 last_seq = &priv->last_seq_num;
3262 last_frag = &priv->last_frag_num;
3263 last_time = &priv->last_packet_time;
3264 break;
3265 default:
3266 return 0;
3267 }
3268 if ((*last_seq == seq) &&
3269 time_after(*last_time + IWL_PACKET_RETRY_TIME, jiffies)) {
3270 if (*last_frag == frag)
3271 goto drop;
3272 if (*last_frag + 1 != frag)
3273 /* out-of-order fragment */
3274 goto drop;
3275 } else
3276 *last_seq = seq;
3277
3278 *last_frag = frag;
3279 *last_time = jiffies;
3280 return 0;
3281
3282 drop:
3283 return 1;
3284 }
3285
3286 #ifdef CONFIG_IWLWIFI_SPECTRUM_MEASUREMENT
3287
3288 #include "iwl-spectrum.h"
3289
3290 #define BEACON_TIME_MASK_LOW 0x00FFFFFF
3291 #define BEACON_TIME_MASK_HIGH 0xFF000000
3292 #define TIME_UNIT 1024
3293
3294 /*
3295 * extended beacon time format
3296 * time in usec will be changed into a 32-bit value in 8:24 format
3297 * the high 1 byte is the beacon counts
3298 * the lower 3 bytes is the time in usec within one beacon interval
3299 */
3300
3301 static u32 iwl_usecs_to_beacons(u32 usec, u32 beacon_interval)
3302 {
3303 u32 quot;
3304 u32 rem;
3305 u32 interval = beacon_interval * 1024;
3306
3307 if (!interval || !usec)
3308 return 0;
3309
3310 quot = (usec / interval) & (BEACON_TIME_MASK_HIGH >> 24);
3311 rem = (usec % interval) & BEACON_TIME_MASK_LOW;
3312
3313 return (quot << 24) + rem;
3314 }
3315
3316 /* base is usually what we get from ucode with each received frame,
3317 * the same as HW timer counter counting down
3318 */
3319
3320 static __le32 iwl_add_beacon_time(u32 base, u32 addon, u32 beacon_interval)
3321 {
3322 u32 base_low = base & BEACON_TIME_MASK_LOW;
3323 u32 addon_low = addon & BEACON_TIME_MASK_LOW;
3324 u32 interval = beacon_interval * TIME_UNIT;
3325 u32 res = (base & BEACON_TIME_MASK_HIGH) +
3326 (addon & BEACON_TIME_MASK_HIGH);
3327
3328 if (base_low > addon_low)
3329 res += base_low - addon_low;
3330 else if (base_low < addon_low) {
3331 res += interval + base_low - addon_low;
3332 res += (1 << 24);
3333 } else
3334 res += (1 << 24);
3335
3336 return cpu_to_le32(res);
3337 }
3338
3339 static int iwl_get_measurement(struct iwl_priv *priv,
3340 struct ieee80211_measurement_params *params,
3341 u8 type)
3342 {
3343 struct iwl_spectrum_cmd spectrum;
3344 struct iwl_rx_packet *res;
3345 struct iwl_host_cmd cmd = {
3346 .id = REPLY_SPECTRUM_MEASUREMENT_CMD,
3347 .data = (void *)&spectrum,
3348 .meta.flags = CMD_WANT_SKB,
3349 };
3350 u32 add_time = le64_to_cpu(params->start_time);
3351 int rc;
3352 int spectrum_resp_status;
3353 int duration = le16_to_cpu(params->duration);
3354
3355 if (iwl_is_associated(priv))
3356 add_time =
3357 iwl_usecs_to_beacons(
3358 le64_to_cpu(params->start_time) - priv->last_tsf,
3359 le16_to_cpu(priv->rxon_timing.beacon_interval));
3360
3361 memset(&spectrum, 0, sizeof(spectrum));
3362
3363 spectrum.channel_count = cpu_to_le16(1);
3364 spectrum.flags =
3365 RXON_FLG_TSF2HOST_MSK | RXON_FLG_ANT_A_MSK | RXON_FLG_DIS_DIV_MSK;
3366 spectrum.filter_flags = MEASUREMENT_FILTER_FLAG;
3367 cmd.len = sizeof(spectrum);
3368 spectrum.len = cpu_to_le16(cmd.len - sizeof(spectrum.len));
3369
3370 if (iwl_is_associated(priv))
3371 spectrum.start_time =
3372 iwl_add_beacon_time(priv->last_beacon_time,
3373 add_time,
3374 le16_to_cpu(priv->rxon_timing.beacon_interval));
3375 else
3376 spectrum.start_time = 0;
3377
3378 spectrum.channels[0].duration = cpu_to_le32(duration * TIME_UNIT);
3379 spectrum.channels[0].channel = params->channel;
3380 spectrum.channels[0].type = type;
3381 if (priv->active_rxon.flags & RXON_FLG_BAND_24G_MSK)
3382 spectrum.flags |= RXON_FLG_BAND_24G_MSK |
3383 RXON_FLG_AUTO_DETECT_MSK | RXON_FLG_TGG_PROTECT_MSK;
3384
3385 rc = iwl_send_cmd_sync(priv, &cmd);
3386 if (rc)
3387 return rc;
3388
3389 res = (struct iwl_rx_packet *)cmd.meta.u.skb->data;
3390 if (res->hdr.flags & IWL_CMD_FAILED_MSK) {
3391 IWL_ERROR("Bad return from REPLY_RX_ON_ASSOC command\n");
3392 rc = -EIO;
3393 }
3394
3395 spectrum_resp_status = le16_to_cpu(res->u.spectrum.status);
3396 switch (spectrum_resp_status) {
3397 case 0: /* Command will be handled */
3398 if (res->u.spectrum.id != 0xff) {
3399 IWL_DEBUG_INFO
3400 ("Replaced existing measurement: %d\n",
3401 res->u.spectrum.id);
3402 priv->measurement_status &= ~MEASUREMENT_READY;
3403 }
3404 priv->measurement_status |= MEASUREMENT_ACTIVE;
3405 rc = 0;
3406 break;
3407
3408 case 1: /* Command will not be handled */
3409 rc = -EAGAIN;
3410 break;
3411 }
3412
3413 dev_kfree_skb_any(cmd.meta.u.skb);
3414
3415 return rc;
3416 }
3417 #endif
3418
3419 static void iwl_txstatus_to_ieee(struct iwl_priv *priv,
3420 struct iwl_tx_info *tx_sta)
3421 {
3422
3423 tx_sta->status.ack_signal = 0;
3424 tx_sta->status.excessive_retries = 0;
3425 tx_sta->status.queue_length = 0;
3426 tx_sta->status.queue_number = 0;
3427
3428 if (in_interrupt())
3429 ieee80211_tx_status_irqsafe(priv->hw,
3430 tx_sta->skb[0], &(tx_sta->status));
3431 else
3432 ieee80211_tx_status(priv->hw,
3433 tx_sta->skb[0], &(tx_sta->status));
3434
3435 tx_sta->skb[0] = NULL;
3436 }
3437
3438 /**
3439 * iwl_tx_queue_reclaim - Reclaim Tx queue entries no more used by NIC.
3440 *
3441 * When FW advances 'R' index, all entries between old and
3442 * new 'R' index need to be reclaimed. As result, some free space
3443 * forms. If there is enough free space (> low mark), wake Tx queue.
3444 */
3445 int iwl_tx_queue_reclaim(struct iwl_priv *priv, int txq_id, int index)
3446 {
3447 struct iwl_tx_queue *txq = &priv->txq[txq_id];
3448 struct iwl_queue *q = &txq->q;
3449 int nfreed = 0;
3450
3451 if ((index >= q->n_bd) || (x2_queue_used(q, index) == 0)) {
3452 IWL_ERROR("Read index for DMA queue txq id (%d), index %d, "
3453 "is out of range [0-%d] %d %d.\n", txq_id,
3454 index, q->n_bd, q->first_empty, q->last_used);
3455 return 0;
3456 }
3457
3458 for (index = iwl_queue_inc_wrap(index, q->n_bd);
3459 q->last_used != index;
3460 q->last_used = iwl_queue_inc_wrap(q->last_used, q->n_bd)) {
3461 if (txq_id != IWL_CMD_QUEUE_NUM) {
3462 iwl_txstatus_to_ieee(priv,
3463 &(txq->txb[txq->q.last_used]));
3464 iwl_hw_txq_free_tfd(priv, txq);
3465 } else if (nfreed > 1) {
3466 IWL_ERROR("HCMD skipped: index (%d) %d %d\n", index,
3467 q->first_empty, q->last_used);
3468 queue_work(priv->workqueue, &priv->restart);
3469 }
3470 nfreed++;
3471 }
3472
3473 if (iwl_queue_space(q) > q->low_mark && (txq_id >= 0) &&
3474 (txq_id != IWL_CMD_QUEUE_NUM) &&
3475 priv->mac80211_registered)
3476 ieee80211_wake_queue(priv->hw, txq_id);
3477
3478
3479 return nfreed;
3480 }
3481
3482 static int iwl_is_tx_success(u32 status)
3483 {
3484 status &= TX_STATUS_MSK;
3485 return (status == TX_STATUS_SUCCESS)
3486 || (status == TX_STATUS_DIRECT_DONE);
3487 }
3488
3489 /******************************************************************************
3490 *
3491 * Generic RX handler implementations
3492 *
3493 ******************************************************************************/
3494 #ifdef CONFIG_IWLWIFI_HT
3495 #ifdef CONFIG_IWLWIFI_HT_AGG
3496
3497 static inline int iwl_get_ra_sta_id(struct iwl_priv *priv,
3498 struct ieee80211_hdr *hdr)
3499 {
3500 if (priv->iw_mode == IEEE80211_IF_TYPE_STA)
3501 return IWL_AP_ID;
3502 else {
3503 u8 *da = ieee80211_get_DA(hdr);
3504 return iwl_hw_find_station(priv, da);
3505 }
3506 }
3507
3508 static struct ieee80211_hdr *iwl_tx_queue_get_hdr(
3509 struct iwl_priv *priv, int txq_id, int idx)
3510 {
3511 if (priv->txq[txq_id].txb[idx].skb[0])
3512 return (struct ieee80211_hdr *)priv->txq[txq_id].
3513 txb[idx].skb[0]->data;
3514 return NULL;
3515 }
3516
3517 static inline u32 iwl_get_scd_ssn(struct iwl_tx_resp *tx_resp)
3518 {
3519 __le32 *scd_ssn = (__le32 *)((u32 *)&tx_resp->status +
3520 tx_resp->frame_count);
3521 return le32_to_cpu(*scd_ssn) & MAX_SN;
3522
3523 }
3524 static int iwl4965_tx_status_reply_tx(struct iwl_priv *priv,
3525 struct iwl_ht_agg *agg,
3526 struct iwl_tx_resp *tx_resp,
3527 u16 start_idx)
3528 {
3529 u32 status;
3530 __le32 *frame_status = &tx_resp->status;
3531 struct ieee80211_tx_status *tx_status = NULL;
3532 struct ieee80211_hdr *hdr = NULL;
3533 int i, sh;
3534 int txq_id, idx;
3535 u16 seq;
3536
3537 if (agg->wait_for_ba)
3538 IWL_DEBUG_TX_REPLY("got tx repsons w/o back\n");
3539
3540 agg->frame_count = tx_resp->frame_count;
3541 agg->start_idx = start_idx;
3542 agg->rate_n_flags = le32_to_cpu(tx_resp->rate_n_flags);
3543 agg->bitmap0 = agg->bitmap1 = 0;
3544
3545 if (agg->frame_count == 1) {
3546 struct iwl_tx_queue *txq ;
3547 status = le32_to_cpu(frame_status[0]);
3548
3549 txq_id = agg->txq_id;
3550 txq = &priv->txq[txq_id];
3551 /* FIXME: code repetition */
3552 IWL_DEBUG_TX_REPLY("FrameCnt = %d, StartIdx=%d \n",
3553 agg->frame_count, agg->start_idx);
3554
3555 tx_status = &(priv->txq[txq_id].txb[txq->q.last_used].status);
3556 tx_status->retry_count = tx_resp->failure_frame;
3557 tx_status->queue_number = status & 0xff;
3558 tx_status->queue_length = tx_resp->bt_kill_count;
3559 tx_status->queue_length |= tx_resp->failure_rts;
3560
3561 tx_status->flags = iwl_is_tx_success(status)?
3562 IEEE80211_TX_STATUS_ACK : 0;
3563 tx_status->control.tx_rate =
3564 iwl_hw_get_rate_n_flags(tx_resp->rate_n_flags);
3565 /* FIXME: code repetition end */
3566
3567 IWL_DEBUG_TX_REPLY("1 Frame 0x%x failure :%d\n",
3568 status & 0xff, tx_resp->failure_frame);
3569 IWL_DEBUG_TX_REPLY("Rate Info rate_n_flags=%x\n",
3570 iwl_hw_get_rate_n_flags(tx_resp->rate_n_flags));
3571
3572 agg->wait_for_ba = 0;
3573 } else {
3574 u64 bitmap = 0;
3575 int start = agg->start_idx;
3576
3577 for (i = 0; i < agg->frame_count; i++) {
3578 u16 sc;
3579 status = le32_to_cpu(frame_status[i]);
3580 seq = status >> 16;
3581 idx = SEQ_TO_INDEX(seq);
3582 txq_id = SEQ_TO_QUEUE(seq);
3583
3584 if (status & (AGG_TX_STATE_FEW_BYTES_MSK |
3585 AGG_TX_STATE_ABORT_MSK))
3586 continue;
3587
3588 IWL_DEBUG_TX_REPLY("FrameCnt = %d, txq_id=%d idx=%d\n",
3589 agg->frame_count, txq_id, idx);
3590
3591 hdr = iwl_tx_queue_get_hdr(priv, txq_id, idx);
3592
3593 sc = le16_to_cpu(hdr->seq_ctrl);
3594 if (idx != (SEQ_TO_SN(sc) & 0xff)) {
3595 IWL_ERROR("BUG_ON idx doesn't match seq control"
3596 " idx=%d, seq_idx=%d, seq=%d\n",
3597 idx, SEQ_TO_SN(sc),
3598 hdr->seq_ctrl);
3599 return -1;
3600 }
3601
3602 IWL_DEBUG_TX_REPLY("AGG Frame i=%d idx %d seq=%d\n",
3603 i, idx, SEQ_TO_SN(sc));
3604
3605 sh = idx - start;
3606 if (sh > 64) {
3607 sh = (start - idx) + 0xff;
3608 bitmap = bitmap << sh;
3609 sh = 0;
3610 start = idx;
3611 } else if (sh < -64)
3612 sh = 0xff - (start - idx);
3613 else if (sh < 0) {
3614 sh = start - idx;
3615 start = idx;
3616 bitmap = bitmap << sh;
3617 sh = 0;
3618 }
3619 bitmap |= (1 << sh);
3620 IWL_DEBUG_TX_REPLY("start=%d bitmap=0x%x\n",
3621 start, (u32)(bitmap & 0xFFFFFFFF));
3622 }
3623
3624 agg->bitmap0 = bitmap & 0xFFFFFFFF;
3625 agg->bitmap1 = bitmap >> 32;
3626 agg->start_idx = start;
3627 agg->rate_n_flags = le32_to_cpu(tx_resp->rate_n_flags);
3628 IWL_DEBUG_TX_REPLY("Frames %d start_idx=%d bitmap=0x%x\n",
3629 agg->frame_count, agg->start_idx,
3630 agg->bitmap0);
3631
3632 if (bitmap)
3633 agg->wait_for_ba = 1;
3634 }
3635 return 0;
3636 }
3637 #endif
3638 #endif
3639
3640 static void iwl_rx_reply_tx(struct iwl_priv *priv,
3641 struct iwl_rx_mem_buffer *rxb)
3642 {
3643 struct iwl_rx_packet *pkt = (void *)rxb->skb->data;
3644 u16 sequence = le16_to_cpu(pkt->hdr.sequence);
3645 int txq_id = SEQ_TO_QUEUE(sequence);
3646 int index = SEQ_TO_INDEX(sequence);
3647 struct iwl_tx_queue *txq = &priv->txq[txq_id];
3648 struct ieee80211_tx_status *tx_status;
3649 struct iwl_tx_resp *tx_resp = (void *)&pkt->u.raw[0];
3650 u32 status = le32_to_cpu(tx_resp->status);
3651 #ifdef CONFIG_IWLWIFI_HT
3652 #ifdef CONFIG_IWLWIFI_HT_AGG
3653 int tid, sta_id;
3654 #endif
3655 #endif
3656
3657 if ((index >= txq->q.n_bd) || (x2_queue_used(&txq->q, index) == 0)) {
3658 IWL_ERROR("Read index for DMA queue txq_id (%d) index %d "
3659 "is out of range [0-%d] %d %d\n", txq_id,
3660 index, txq->q.n_bd, txq->q.first_empty,
3661 txq->q.last_used);
3662 return;
3663 }
3664
3665 #ifdef CONFIG_IWLWIFI_HT
3666 #ifdef CONFIG_IWLWIFI_HT_AGG
3667 if (txq->sched_retry) {
3668 const u32 scd_ssn = iwl_get_scd_ssn(tx_resp);
3669 struct ieee80211_hdr *hdr =
3670 iwl_tx_queue_get_hdr(priv, txq_id, index);
3671 struct iwl_ht_agg *agg = NULL;
3672 __le16 *qc = ieee80211_get_qos_ctrl(hdr);
3673
3674 if (qc == NULL) {
3675 IWL_ERROR("BUG_ON qc is null!!!!\n");
3676 return;
3677 }
3678
3679 tid = le16_to_cpu(*qc) & 0xf;
3680
3681 sta_id = iwl_get_ra_sta_id(priv, hdr);
3682 if (unlikely(sta_id == IWL_INVALID_STATION)) {
3683 IWL_ERROR("Station not known for\n");
3684 return;
3685 }
3686
3687 agg = &priv->stations[sta_id].tid[tid].agg;
3688
3689 iwl4965_tx_status_reply_tx(priv, agg, tx_resp, index);
3690
3691 if ((tx_resp->frame_count == 1) &&
3692 !iwl_is_tx_success(status)) {
3693 /* TODO: send BAR */
3694 }
3695
3696 if ((txq->q.last_used != (scd_ssn & 0xff))) {
3697 index = iwl_queue_dec_wrap(scd_ssn & 0xff, txq->q.n_bd);
3698 IWL_DEBUG_TX_REPLY("Retry scheduler reclaim scd_ssn "
3699 "%d index %d\n", scd_ssn , index);
3700 iwl_tx_queue_reclaim(priv, txq_id, index);
3701 }
3702 } else {
3703 #endif /* CONFIG_IWLWIFI_HT_AGG */
3704 #endif /* CONFIG_IWLWIFI_HT */
3705 tx_status = &(txq->txb[txq->q.last_used].status);
3706
3707 tx_status->retry_count = tx_resp->failure_frame;
3708 tx_status->queue_number = status;
3709 tx_status->queue_length = tx_resp->bt_kill_count;
3710 tx_status->queue_length |= tx_resp->failure_rts;
3711
3712 tx_status->flags =
3713 iwl_is_tx_success(status) ? IEEE80211_TX_STATUS_ACK : 0;
3714
3715 tx_status->control.tx_rate =
3716 iwl_hw_get_rate_n_flags(tx_resp->rate_n_flags);
3717
3718 IWL_DEBUG_TX("Tx queue %d Status %s (0x%08x) rate_n_flags 0x%x "
3719 "retries %d\n", txq_id, iwl_get_tx_fail_reason(status),
3720 status, le32_to_cpu(tx_resp->rate_n_flags),
3721 tx_resp->failure_frame);
3722
3723 IWL_DEBUG_TX_REPLY("Tx queue reclaim %d\n", index);
3724 if (index != -1)
3725 iwl_tx_queue_reclaim(priv, txq_id, index);
3726 #ifdef CONFIG_IWLWIFI_HT
3727 #ifdef CONFIG_IWLWIFI_HT_AGG
3728 }
3729 #endif /* CONFIG_IWLWIFI_HT_AGG */
3730 #endif /* CONFIG_IWLWIFI_HT */
3731
3732 if (iwl_check_bits(status, TX_ABORT_REQUIRED_MSK))
3733 IWL_ERROR("TODO: Implement Tx ABORT REQUIRED!!!\n");
3734 }
3735
3736
3737 static void iwl_rx_reply_alive(struct iwl_priv *priv,
3738 struct iwl_rx_mem_buffer *rxb)
3739 {
3740 struct iwl_rx_packet *pkt = (void *)rxb->skb->data;
3741 struct iwl_alive_resp *palive;
3742 struct delayed_work *pwork;
3743
3744 palive = &pkt->u.alive_frame;
3745
3746 IWL_DEBUG_INFO("Alive ucode status 0x%08X revision "
3747 "0x%01X 0x%01X\n",
3748 palive->is_valid, palive->ver_type,
3749 palive->ver_subtype);
3750
3751 if (palive->ver_subtype == INITIALIZE_SUBTYPE) {
3752 IWL_DEBUG_INFO("Initialization Alive received.\n");
3753 memcpy(&priv->card_alive_init,
3754 &pkt->u.alive_frame,
3755 sizeof(struct iwl_init_alive_resp));
3756 pwork = &priv->init_alive_start;
3757 } else {
3758 IWL_DEBUG_INFO("Runtime Alive received.\n");
3759 memcpy(&priv->card_alive, &pkt->u.alive_frame,
3760 sizeof(struct iwl_alive_resp));
3761 pwork = &priv->alive_start;
3762 }
3763
3764 /* We delay the ALIVE response by 5ms to
3765 * give the HW RF Kill time to activate... */
3766 if (palive->is_valid == UCODE_VALID_OK)
3767 queue_delayed_work(priv->workqueue, pwork,
3768 msecs_to_jiffies(5));
3769 else
3770 IWL_WARNING("uCode did not respond OK.\n");
3771 }
3772
3773 static void iwl_rx_reply_add_sta(struct iwl_priv *priv,
3774 struct iwl_rx_mem_buffer *rxb)
3775 {
3776 struct iwl_rx_packet *pkt = (void *)rxb->skb->data;
3777
3778 IWL_DEBUG_RX("Received REPLY_ADD_STA: 0x%02X\n", pkt->u.status);
3779 return;
3780 }
3781
3782 static void iwl_rx_reply_error(struct iwl_priv *priv,
3783 struct iwl_rx_mem_buffer *rxb)
3784 {
3785 struct iwl_rx_packet *pkt = (void *)rxb->skb->data;
3786
3787 IWL_ERROR("Error Reply type 0x%08X cmd %s (0x%02X) "
3788 "seq 0x%04X ser 0x%08X\n",
3789 le32_to_cpu(pkt->u.err_resp.error_type),
3790 get_cmd_string(pkt->u.err_resp.cmd_id),
3791 pkt->u.err_resp.cmd_id,
3792 le16_to_cpu(pkt->u.err_resp.bad_cmd_seq_num),
3793 le32_to_cpu(pkt->u.err_resp.error_info));
3794 }
3795
3796 #define TX_STATUS_ENTRY(x) case TX_STATUS_FAIL_ ## x: return #x
3797
3798 static void iwl_rx_csa(struct iwl_priv *priv, struct iwl_rx_mem_buffer *rxb)
3799 {
3800 struct iwl_rx_packet *pkt = (void *)rxb->skb->data;
3801 struct iwl_rxon_cmd *rxon = (void *)&priv->active_rxon;
3802 struct iwl_csa_notification *csa = &(pkt->u.csa_notif);
3803 IWL_DEBUG_11H("CSA notif: channel %d, status %d\n",
3804 le16_to_cpu(csa->channel), le32_to_cpu(csa->status));
3805 rxon->channel = csa->channel;
3806 priv->staging_rxon.channel = csa->channel;
3807 }
3808
3809 static void iwl_rx_spectrum_measure_notif(struct iwl_priv *priv,
3810 struct iwl_rx_mem_buffer *rxb)
3811 {
3812 #ifdef CONFIG_IWLWIFI_SPECTRUM_MEASUREMENT
3813 struct iwl_rx_packet *pkt = (void *)rxb->skb->data;
3814 struct iwl_spectrum_notification *report = &(pkt->u.spectrum_notif);
3815
3816 if (!report->state) {
3817 IWL_DEBUG(IWL_DL_11H | IWL_DL_INFO,
3818 "Spectrum Measure Notification: Start\n");
3819 return;
3820 }
3821
3822 memcpy(&priv->measure_report, report, sizeof(*report));
3823 priv->measurement_status |= MEASUREMENT_READY;
3824 #endif
3825 }
3826
3827 static void iwl_rx_pm_sleep_notif(struct iwl_priv *priv,
3828 struct iwl_rx_mem_buffer *rxb)
3829 {
3830 #ifdef CONFIG_IWLWIFI_DEBUG
3831 struct iwl_rx_packet *pkt = (void *)rxb->skb->data;
3832 struct iwl_sleep_notification *sleep = &(pkt->u.sleep_notif);
3833 IWL_DEBUG_RX("sleep mode: %d, src: %d\n",
3834 sleep->pm_sleep_mode, sleep->pm_wakeup_src);
3835 #endif
3836 }
3837
3838 static void iwl_rx_pm_debug_statistics_notif(struct iwl_priv *priv,
3839 struct iwl_rx_mem_buffer *rxb)
3840 {
3841 struct iwl_rx_packet *pkt = (void *)rxb->skb->data;
3842 IWL_DEBUG_RADIO("Dumping %d bytes of unhandled "
3843 "notification for %s:\n",
3844 le32_to_cpu(pkt->len), get_cmd_string(pkt->hdr.cmd));
3845 iwl_print_hex_dump(IWL_DL_RADIO, pkt->u.raw, le32_to_cpu(pkt->len));
3846 }
3847
3848 static void iwl_bg_beacon_update(struct work_struct *work)
3849 {
3850 struct iwl_priv *priv =
3851 container_of(work, struct iwl_priv, beacon_update);
3852 struct sk_buff *beacon;
3853
3854 /* Pull updated AP beacon from mac80211. will fail if not in AP mode */
3855 beacon = ieee80211_beacon_get(priv->hw, priv->interface_id, NULL);
3856
3857 if (!beacon) {
3858 IWL_ERROR("update beacon failed\n");
3859 return;
3860 }
3861
3862 mutex_lock(&priv->mutex);
3863 /* new beacon skb is allocated every time; dispose previous.*/
3864 if (priv->ibss_beacon)
3865 dev_kfree_skb(priv->ibss_beacon);
3866
3867 priv->ibss_beacon = beacon;
3868 mutex_unlock(&priv->mutex);
3869
3870 iwl_send_beacon_cmd(priv);
3871 }
3872
3873 static void iwl_rx_beacon_notif(struct iwl_priv *priv,
3874 struct iwl_rx_mem_buffer *rxb)
3875 {
3876 #ifdef CONFIG_IWLWIFI_DEBUG
3877 struct iwl_rx_packet *pkt = (void *)rxb->skb->data;
3878 struct iwl_beacon_notif *beacon = &(pkt->u.beacon_status);
3879 u8 rate = iwl_hw_get_rate(beacon->beacon_notify_hdr.rate_n_flags);
3880
3881 IWL_DEBUG_RX("beacon status %x retries %d iss %d "
3882 "tsf %d %d rate %d\n",
3883 le32_to_cpu(beacon->beacon_notify_hdr.status) & TX_STATUS_MSK,
3884 beacon->beacon_notify_hdr.failure_frame,
3885 le32_to_cpu(beacon->ibss_mgr_status),
3886 le32_to_cpu(beacon->high_tsf),
3887 le32_to_cpu(beacon->low_tsf), rate);
3888 #endif
3889
3890 if ((priv->iw_mode == IEEE80211_IF_TYPE_AP) &&
3891 (!test_bit(STATUS_EXIT_PENDING, &priv->status)))
3892 queue_work(priv->workqueue, &priv->beacon_update);
3893 }
3894
3895 /* Service response to REPLY_SCAN_CMD (0x80) */
3896 static void iwl_rx_reply_scan(struct iwl_priv *priv,
3897 struct iwl_rx_mem_buffer *rxb)
3898 {
3899 #ifdef CONFIG_IWLWIFI_DEBUG
3900 struct iwl_rx_packet *pkt = (void *)rxb->skb->data;
3901 struct iwl_scanreq_notification *notif =
3902 (struct iwl_scanreq_notification *)pkt->u.raw;
3903
3904 IWL_DEBUG_RX("Scan request status = 0x%x\n", notif->status);
3905 #endif
3906 }
3907
3908 /* Service SCAN_START_NOTIFICATION (0x82) */
3909 static void iwl_rx_scan_start_notif(struct iwl_priv *priv,
3910 struct iwl_rx_mem_buffer *rxb)
3911 {
3912 struct iwl_rx_packet *pkt = (void *)rxb->skb->data;
3913 struct iwl_scanstart_notification *notif =
3914 (struct iwl_scanstart_notification *)pkt->u.raw;
3915 priv->scan_start_tsf = le32_to_cpu(notif->tsf_low);
3916 IWL_DEBUG_SCAN("Scan start: "
3917 "%d [802.11%s] "
3918 "(TSF: 0x%08X:%08X) - %d (beacon timer %u)\n",
3919 notif->channel,
3920 notif->band ? "bg" : "a",
3921 notif->tsf_high,
3922 notif->tsf_low, notif->status, notif->beacon_timer);
3923 }
3924
3925 /* Service SCAN_RESULTS_NOTIFICATION (0x83) */
3926 static void iwl_rx_scan_results_notif(struct iwl_priv *priv,
3927 struct iwl_rx_mem_buffer *rxb)
3928 {
3929 struct iwl_rx_packet *pkt = (void *)rxb->skb->data;
3930 struct iwl_scanresults_notification *notif =
3931 (struct iwl_scanresults_notification *)pkt->u.raw;
3932
3933 IWL_DEBUG_SCAN("Scan ch.res: "
3934 "%d [802.11%s] "
3935 "(TSF: 0x%08X:%08X) - %d "
3936 "elapsed=%lu usec (%dms since last)\n",
3937 notif->channel,
3938 notif->band ? "bg" : "a",
3939 le32_to_cpu(notif->tsf_high),
3940 le32_to_cpu(notif->tsf_low),
3941 le32_to_cpu(notif->statistics[0]),
3942 le32_to_cpu(notif->tsf_low) - priv->scan_start_tsf,
3943 jiffies_to_msecs(elapsed_jiffies
3944 (priv->last_scan_jiffies, jiffies)));
3945
3946 priv->last_scan_jiffies = jiffies;
3947 }
3948
3949 /* Service SCAN_COMPLETE_NOTIFICATION (0x84) */
3950 static void iwl_rx_scan_complete_notif(struct iwl_priv *priv,
3951 struct iwl_rx_mem_buffer *rxb)
3952 {
3953 struct iwl_rx_packet *pkt = (void *)rxb->skb->data;
3954 struct iwl_scancomplete_notification *scan_notif = (void *)pkt->u.raw;
3955
3956 IWL_DEBUG_SCAN("Scan complete: %d channels (TSF 0x%08X:%08X) - %d\n",
3957 scan_notif->scanned_channels,
3958 scan_notif->tsf_low,
3959 scan_notif->tsf_high, scan_notif->status);
3960
3961 /* The HW is no longer scanning */
3962 clear_bit(STATUS_SCAN_HW, &priv->status);
3963
3964 /* The scan completion notification came in, so kill that timer... */
3965 cancel_delayed_work(&priv->scan_check);
3966
3967 IWL_DEBUG_INFO("Scan pass on %sGHz took %dms\n",
3968 (priv->scan_bands == 2) ? "2.4" : "5.2",
3969 jiffies_to_msecs(elapsed_jiffies
3970 (priv->scan_pass_start, jiffies)));
3971
3972 /* Remove this scanned band from the list
3973 * of pending bands to scan */
3974 priv->scan_bands--;
3975
3976 /* If a request to abort was given, or the scan did not succeed
3977 * then we reset the scan state machine and terminate,
3978 * re-queuing another scan if one has been requested */
3979 if (test_bit(STATUS_SCAN_ABORTING, &priv->status)) {
3980 IWL_DEBUG_INFO("Aborted scan completed.\n");
3981 clear_bit(STATUS_SCAN_ABORTING, &priv->status);
3982 } else {
3983 /* If there are more bands on this scan pass reschedule */
3984 if (priv->scan_bands > 0)
3985 goto reschedule;
3986 }
3987
3988 priv->last_scan_jiffies = jiffies;
3989 IWL_DEBUG_INFO("Setting scan to off\n");
3990
3991 clear_bit(STATUS_SCANNING, &priv->status);
3992
3993 IWL_DEBUG_INFO("Scan took %dms\n",
3994 jiffies_to_msecs(elapsed_jiffies(priv->scan_start, jiffies)));
3995
3996 queue_work(priv->workqueue, &priv->scan_completed);
3997
3998 return;
3999
4000 reschedule:
4001 priv->scan_pass_start = jiffies;
4002 queue_work(priv->workqueue, &priv->request_scan);
4003 }
4004
4005 /* Handle notification from uCode that card's power state is changing
4006 * due to software, hardware, or critical temperature RFKILL */
4007 static void iwl_rx_card_state_notif(struct iwl_priv *priv,
4008 struct iwl_rx_mem_buffer *rxb)
4009 {
4010 struct iwl_rx_packet *pkt = (void *)rxb->skb->data;
4011 u32 flags = le32_to_cpu(pkt->u.card_state_notif.flags);
4012 unsigned long status = priv->status;
4013
4014 IWL_DEBUG_RF_KILL("Card state received: HW:%s SW:%s\n",
4015 (flags & HW_CARD_DISABLED) ? "Kill" : "On",
4016 (flags & SW_CARD_DISABLED) ? "Kill" : "On");
4017
4018 if (flags & (SW_CARD_DISABLED | HW_CARD_DISABLED |
4019 RF_CARD_DISABLED)) {
4020
4021 iwl_write32(priv, CSR_UCODE_DRV_GP1_SET,
4022 CSR_UCODE_DRV_GP1_BIT_CMD_BLOCKED);
4023
4024 if (!iwl_grab_restricted_access(priv)) {
4025 iwl_write_restricted(
4026 priv, HBUS_TARG_MBX_C,
4027 HBUS_TARG_MBX_C_REG_BIT_CMD_BLOCKED);
4028
4029 iwl_release_restricted_access(priv);
4030 }
4031
4032 if (!(flags & RXON_CARD_DISABLED)) {
4033 iwl_write32(priv, CSR_UCODE_DRV_GP1_CLR,
4034 CSR_UCODE_DRV_GP1_BIT_CMD_BLOCKED);
4035 if (!iwl_grab_restricted_access(priv)) {
4036 iwl_write_restricted(
4037 priv, HBUS_TARG_MBX_C,
4038 HBUS_TARG_MBX_C_REG_BIT_CMD_BLOCKED);
4039
4040 iwl_release_restricted_access(priv);
4041 }
4042 }
4043
4044 if (flags & RF_CARD_DISABLED) {
4045 iwl_write32(priv, CSR_UCODE_DRV_GP1_SET,
4046 CSR_UCODE_DRV_GP1_REG_BIT_CT_KILL_EXIT);
4047 iwl_read32(priv, CSR_UCODE_DRV_GP1);
4048 if (!iwl_grab_restricted_access(priv))
4049 iwl_release_restricted_access(priv);
4050 }
4051 }
4052
4053 if (flags & HW_CARD_DISABLED)
4054 set_bit(STATUS_RF_KILL_HW, &priv->status);
4055 else
4056 clear_bit(STATUS_RF_KILL_HW, &priv->status);
4057
4058
4059 if (flags & SW_CARD_DISABLED)
4060 set_bit(STATUS_RF_KILL_SW, &priv->status);
4061 else
4062 clear_bit(STATUS_RF_KILL_SW, &priv->status);
4063
4064 if (!(flags & RXON_CARD_DISABLED))
4065 iwl_scan_cancel(priv);
4066
4067 if ((test_bit(STATUS_RF_KILL_HW, &status) !=
4068 test_bit(STATUS_RF_KILL_HW, &priv->status)) ||
4069 (test_bit(STATUS_RF_KILL_SW, &status) !=
4070 test_bit(STATUS_RF_KILL_SW, &priv->status)))
4071 queue_work(priv->workqueue, &priv->rf_kill);
4072 else
4073 wake_up_interruptible(&priv->wait_command_queue);
4074 }
4075
4076 /**
4077 * iwl_setup_rx_handlers - Initialize Rx handler callbacks
4078 *
4079 * Setup the RX handlers for each of the reply types sent from the uCode
4080 * to the host.
4081 *
4082 * This function chains into the hardware specific files for them to setup
4083 * any hardware specific handlers as well.
4084 */
4085 static void iwl_setup_rx_handlers(struct iwl_priv *priv)
4086 {
4087 priv->rx_handlers[REPLY_ALIVE] = iwl_rx_reply_alive;
4088 priv->rx_handlers[REPLY_ADD_STA] = iwl_rx_reply_add_sta;
4089 priv->rx_handlers[REPLY_ERROR] = iwl_rx_reply_error;
4090 priv->rx_handlers[CHANNEL_SWITCH_NOTIFICATION] = iwl_rx_csa;
4091 priv->rx_handlers[SPECTRUM_MEASURE_NOTIFICATION] =
4092 iwl_rx_spectrum_measure_notif;
4093 priv->rx_handlers[PM_SLEEP_NOTIFICATION] = iwl_rx_pm_sleep_notif;
4094 priv->rx_handlers[PM_DEBUG_STATISTIC_NOTIFIC] =
4095 iwl_rx_pm_debug_statistics_notif;
4096 priv->rx_handlers[BEACON_NOTIFICATION] = iwl_rx_beacon_notif;
4097
4098 /* NOTE: iwl_rx_statistics is different based on whether
4099 * the build is for the 3945 or the 4965. See the
4100 * corresponding implementation in iwl-XXXX.c
4101 *
4102 * The same handler is used for both the REPLY to a
4103 * discrete statistics request from the host as well as
4104 * for the periodic statistics notification from the uCode
4105 */
4106 priv->rx_handlers[REPLY_STATISTICS_CMD] = iwl_hw_rx_statistics;
4107 priv->rx_handlers[STATISTICS_NOTIFICATION] = iwl_hw_rx_statistics;
4108
4109 priv->rx_handlers[REPLY_SCAN_CMD] = iwl_rx_reply_scan;
4110 priv->rx_handlers[SCAN_START_NOTIFICATION] = iwl_rx_scan_start_notif;
4111 priv->rx_handlers[SCAN_RESULTS_NOTIFICATION] =
4112 iwl_rx_scan_results_notif;
4113 priv->rx_handlers[SCAN_COMPLETE_NOTIFICATION] =
4114 iwl_rx_scan_complete_notif;
4115 priv->rx_handlers[CARD_STATE_NOTIFICATION] = iwl_rx_card_state_notif;
4116 priv->rx_handlers[REPLY_TX] = iwl_rx_reply_tx;
4117
4118 /* Setup hardware specific Rx handlers */
4119 iwl_hw_rx_handler_setup(priv);
4120 }
4121
4122 /**
4123 * iwl_tx_cmd_complete - Pull unused buffers off the queue and reclaim them
4124 * @rxb: Rx buffer to reclaim
4125 *
4126 * If an Rx buffer has an async callback associated with it the callback
4127 * will be executed. The attached skb (if present) will only be freed
4128 * if the callback returns 1
4129 */
4130 static void iwl_tx_cmd_complete(struct iwl_priv *priv,
4131 struct iwl_rx_mem_buffer *rxb)
4132 {
4133 struct iwl_rx_packet *pkt = (struct iwl_rx_packet *)rxb->skb->data;
4134 u16 sequence = le16_to_cpu(pkt->hdr.sequence);
4135 int txq_id = SEQ_TO_QUEUE(sequence);
4136 int index = SEQ_TO_INDEX(sequence);
4137 int huge = sequence & SEQ_HUGE_FRAME;
4138 int cmd_index;
4139 struct iwl_cmd *cmd;
4140
4141 /* If a Tx command is being handled and it isn't in the actual
4142 * command queue then there a command routing bug has been introduced
4143 * in the queue management code. */
4144 if (txq_id != IWL_CMD_QUEUE_NUM)
4145 IWL_ERROR("Error wrong command queue %d command id 0x%X\n",
4146 txq_id, pkt->hdr.cmd);
4147 BUG_ON(txq_id != IWL_CMD_QUEUE_NUM);
4148
4149 cmd_index = get_cmd_index(&priv->txq[IWL_CMD_QUEUE_NUM].q, index, huge);
4150 cmd = &priv->txq[IWL_CMD_QUEUE_NUM].cmd[cmd_index];
4151
4152 /* Input error checking is done when commands are added to queue. */
4153 if (cmd->meta.flags & CMD_WANT_SKB) {
4154 cmd->meta.source->u.skb = rxb->skb;
4155 rxb->skb = NULL;
4156 } else if (cmd->meta.u.callback &&
4157 !cmd->meta.u.callback(priv, cmd, rxb->skb))
4158 rxb->skb = NULL;
4159
4160 iwl_tx_queue_reclaim(priv, txq_id, index);
4161
4162 if (!(cmd->meta.flags & CMD_ASYNC)) {
4163 clear_bit(STATUS_HCMD_ACTIVE, &priv->status);
4164 wake_up_interruptible(&priv->wait_command_queue);
4165 }
4166 }
4167
4168 /************************** RX-FUNCTIONS ****************************/
4169 /*
4170 * Rx theory of operation
4171 *
4172 * The host allocates 32 DMA target addresses and passes the host address
4173 * to the firmware at register IWL_RFDS_TABLE_LOWER + N * RFD_SIZE where N is
4174 * 0 to 31
4175 *
4176 * Rx Queue Indexes
4177 * The host/firmware share two index registers for managing the Rx buffers.
4178 *
4179 * The READ index maps to the first position that the firmware may be writing
4180 * to -- the driver can read up to (but not including) this position and get
4181 * good data.
4182 * The READ index is managed by the firmware once the card is enabled.
4183 *
4184 * The WRITE index maps to the last position the driver has read from -- the
4185 * position preceding WRITE is the last slot the firmware can place a packet.
4186 *
4187 * The queue is empty (no good data) if WRITE = READ - 1, and is full if
4188 * WRITE = READ.
4189 *
4190 * During initialization the host sets up the READ queue position to the first
4191 * INDEX position, and WRITE to the last (READ - 1 wrapped)
4192 *
4193 * When the firmware places a packet in a buffer it will advance the READ index
4194 * and fire the RX interrupt. The driver can then query the READ index and
4195 * process as many packets as possible, moving the WRITE index forward as it
4196 * resets the Rx queue buffers with new memory.
4197 *
4198 * The management in the driver is as follows:
4199 * + A list of pre-allocated SKBs is stored in iwl->rxq->rx_free. When
4200 * iwl->rxq->free_count drops to or below RX_LOW_WATERMARK, work is scheduled
4201 * to replensish the iwl->rxq->rx_free.
4202 * + In iwl_rx_replenish (scheduled) if 'processed' != 'read' then the
4203 * iwl->rxq is replenished and the READ INDEX is updated (updating the
4204 * 'processed' and 'read' driver indexes as well)
4205 * + A received packet is processed and handed to the kernel network stack,
4206 * detached from the iwl->rxq. The driver 'processed' index is updated.
4207 * + The Host/Firmware iwl->rxq is replenished at tasklet time from the rx_free
4208 * list. If there are no allocated buffers in iwl->rxq->rx_free, the READ
4209 * INDEX is not incremented and iwl->status(RX_STALLED) is set. If there
4210 * were enough free buffers and RX_STALLED is set it is cleared.
4211 *
4212 *
4213 * Driver sequence:
4214 *
4215 * iwl_rx_queue_alloc() Allocates rx_free
4216 * iwl_rx_replenish() Replenishes rx_free list from rx_used, and calls
4217 * iwl_rx_queue_restock
4218 * iwl_rx_queue_restock() Moves available buffers from rx_free into Rx
4219 * queue, updates firmware pointers, and updates
4220 * the WRITE index. If insufficient rx_free buffers
4221 * are available, schedules iwl_rx_replenish
4222 *
4223 * -- enable interrupts --
4224 * ISR - iwl_rx() Detach iwl_rx_mem_buffers from pool up to the
4225 * READ INDEX, detaching the SKB from the pool.
4226 * Moves the packet buffer from queue to rx_used.
4227 * Calls iwl_rx_queue_restock to refill any empty
4228 * slots.
4229 * ...
4230 *
4231 */
4232
4233 /**
4234 * iwl_rx_queue_space - Return number of free slots available in queue.
4235 */
4236 static int iwl_rx_queue_space(const struct iwl_rx_queue *q)
4237 {
4238 int s = q->read - q->write;
4239 if (s <= 0)
4240 s += RX_QUEUE_SIZE;
4241 /* keep some buffer to not confuse full and empty queue */
4242 s -= 2;
4243 if (s < 0)
4244 s = 0;
4245 return s;
4246 }
4247
4248 /**
4249 * iwl_rx_queue_update_write_ptr - Update the write pointer for the RX queue
4250 *
4251 * NOTE: This function has 3945 and 4965 specific code sections
4252 * but is declared in base due to the majority of the
4253 * implementation being the same (only a numeric constant is
4254 * different)
4255 *
4256 */
4257 int iwl_rx_queue_update_write_ptr(struct iwl_priv *priv, struct iwl_rx_queue *q)
4258 {
4259 u32 reg = 0;
4260 int rc = 0;
4261 unsigned long flags;
4262
4263 spin_lock_irqsave(&q->lock, flags);
4264
4265 if (q->need_update == 0)
4266 goto exit_unlock;
4267
4268 if (test_bit(STATUS_POWER_PMI, &priv->status)) {
4269 reg = iwl_read32(priv, CSR_UCODE_DRV_GP1);
4270
4271 if (reg & CSR_UCODE_DRV_GP1_BIT_MAC_SLEEP) {
4272 iwl_set_bit(priv, CSR_GP_CNTRL,
4273 CSR_GP_CNTRL_REG_FLAG_MAC_ACCESS_REQ);
4274 goto exit_unlock;
4275 }
4276
4277 rc = iwl_grab_restricted_access(priv);
4278 if (rc)
4279 goto exit_unlock;
4280
4281 iwl_write_restricted(priv, FH_RSCSR_CHNL0_WPTR,
4282 q->write & ~0x7);
4283 iwl_release_restricted_access(priv);
4284 } else
4285 iwl_write32(priv, FH_RSCSR_CHNL0_WPTR, q->write & ~0x7);
4286
4287
4288 q->need_update = 0;
4289
4290 exit_unlock:
4291 spin_unlock_irqrestore(&q->lock, flags);
4292 return rc;
4293 }
4294
4295 /**
4296 * iwl_dma_addr2rbd_ptr - convert a DMA address to a uCode read buffer pointer.
4297 *
4298 * NOTE: This function has 3945 and 4965 specific code paths in it.
4299 */
4300 static inline __le32 iwl_dma_addr2rbd_ptr(struct iwl_priv *priv,
4301 dma_addr_t dma_addr)
4302 {
4303 return cpu_to_le32((u32)(dma_addr >> 8));
4304 }
4305
4306
4307 /**
4308 * iwl_rx_queue_restock - refill RX queue from pre-allocated pool
4309 *
4310 * If there are slots in the RX queue that need to be restocked,
4311 * and we have free pre-allocated buffers, fill the ranks as much
4312 * as we can pulling from rx_free.
4313 *
4314 * This moves the 'write' index forward to catch up with 'processed', and
4315 * also updates the memory address in the firmware to reference the new
4316 * target buffer.
4317 */
4318 int iwl_rx_queue_restock(struct iwl_priv *priv)
4319 {
4320 struct iwl_rx_queue *rxq = &priv->rxq;
4321 struct list_head *element;
4322 struct iwl_rx_mem_buffer *rxb;
4323 unsigned long flags;
4324 int write, rc;
4325
4326 spin_lock_irqsave(&rxq->lock, flags);
4327 write = rxq->write & ~0x7;
4328 while ((iwl_rx_queue_space(rxq) > 0) && (rxq->free_count)) {
4329 element = rxq->rx_free.next;
4330 rxb = list_entry(element, struct iwl_rx_mem_buffer, list);
4331 list_del(element);
4332 rxq->bd[rxq->write] = iwl_dma_addr2rbd_ptr(priv, rxb->dma_addr);
4333 rxq->queue[rxq->write] = rxb;
4334 rxq->write = (rxq->write + 1) & RX_QUEUE_MASK;
4335 rxq->free_count--;
4336 }
4337 spin_unlock_irqrestore(&rxq->lock, flags);
4338 /* If the pre-allocated buffer pool is dropping low, schedule to
4339 * refill it */
4340 if (rxq->free_count <= RX_LOW_WATERMARK)
4341 queue_work(priv->workqueue, &priv->rx_replenish);
4342
4343
4344 /* If we've added more space for the firmware to place data, tell it */
4345 if ((write != (rxq->write & ~0x7))
4346 || (abs(rxq->write - rxq->read) > 7)) {
4347 spin_lock_irqsave(&rxq->lock, flags);
4348 rxq->need_update = 1;
4349 spin_unlock_irqrestore(&rxq->lock, flags);
4350 rc = iwl_rx_queue_update_write_ptr(priv, rxq);
4351 if (rc)
4352 return rc;
4353 }
4354
4355 return 0;
4356 }
4357
4358 /**
4359 * iwl_rx_replensih - Move all used packet from rx_used to rx_free
4360 *
4361 * When moving to rx_free an SKB is allocated for the slot.
4362 *
4363 * Also restock the Rx queue via iwl_rx_queue_restock.
4364 * This is called as a scheduled work item (except for during intialization)
4365 */
4366 void iwl_rx_replenish(void *data)
4367 {
4368 struct iwl_priv *priv = data;
4369 struct iwl_rx_queue *rxq = &priv->rxq;
4370 struct list_head *element;
4371 struct iwl_rx_mem_buffer *rxb;
4372 unsigned long flags;
4373 spin_lock_irqsave(&rxq->lock, flags);
4374 while (!list_empty(&rxq->rx_used)) {
4375 element = rxq->rx_used.next;
4376 rxb = list_entry(element, struct iwl_rx_mem_buffer, list);
4377 rxb->skb =
4378 alloc_skb(IWL_RX_BUF_SIZE, __GFP_NOWARN | GFP_ATOMIC);
4379 if (!rxb->skb) {
4380 if (net_ratelimit())
4381 printk(KERN_CRIT DRV_NAME
4382 ": Can not allocate SKB buffers\n");
4383 /* We don't reschedule replenish work here -- we will
4384 * call the restock method and if it still needs
4385 * more buffers it will schedule replenish */
4386 break;
4387 }
4388 priv->alloc_rxb_skb++;
4389 list_del(element);
4390 rxb->dma_addr =
4391 pci_map_single(priv->pci_dev, rxb->skb->data,
4392 IWL_RX_BUF_SIZE, PCI_DMA_FROMDEVICE);
4393 list_add_tail(&rxb->list, &rxq->rx_free);
4394 rxq->free_count++;
4395 }
4396 spin_unlock_irqrestore(&rxq->lock, flags);
4397
4398 spin_lock_irqsave(&priv->lock, flags);
4399 iwl_rx_queue_restock(priv);
4400 spin_unlock_irqrestore(&priv->lock, flags);
4401 }
4402
4403 /* Assumes that the skb field of the buffers in 'pool' is kept accurate.
4404 * If an SKB has been detached, the POOL needs to have it's SKB set to NULL
4405 * This free routine walks the list of POOL entries and if SKB is set to
4406 * non NULL it is unmapped and freed
4407 */
4408 void iwl_rx_queue_free(struct iwl_priv *priv, struct iwl_rx_queue *rxq)
4409 {
4410 int i;
4411 for (i = 0; i < RX_QUEUE_SIZE + RX_FREE_BUFFERS; i++) {
4412 if (rxq->pool[i].skb != NULL) {
4413 pci_unmap_single(priv->pci_dev,
4414 rxq->pool[i].dma_addr,
4415 IWL_RX_BUF_SIZE, PCI_DMA_FROMDEVICE);
4416 dev_kfree_skb(rxq->pool[i].skb);
4417 }
4418 }
4419
4420 pci_free_consistent(priv->pci_dev, 4 * RX_QUEUE_SIZE, rxq->bd,
4421 rxq->dma_addr);
4422 rxq->bd = NULL;
4423 }
4424
4425 int iwl_rx_queue_alloc(struct iwl_priv *priv)
4426 {
4427 struct iwl_rx_queue *rxq = &priv->rxq;
4428 struct pci_dev *dev = priv->pci_dev;
4429 int i;
4430
4431 spin_lock_init(&rxq->lock);
4432 INIT_LIST_HEAD(&rxq->rx_free);
4433 INIT_LIST_HEAD(&rxq->rx_used);
4434 rxq->bd = pci_alloc_consistent(dev, 4 * RX_QUEUE_SIZE, &rxq->dma_addr);
4435 if (!rxq->bd)
4436 return -ENOMEM;
4437 /* Fill the rx_used queue with _all_ of the Rx buffers */
4438 for (i = 0; i < RX_FREE_BUFFERS + RX_QUEUE_SIZE; i++)
4439 list_add_tail(&rxq->pool[i].list, &rxq->rx_used);
4440 /* Set us so that we have processed and used all buffers, but have
4441 * not restocked the Rx queue with fresh buffers */
4442 rxq->read = rxq->write = 0;
4443 rxq->free_count = 0;
4444 rxq->need_update = 0;
4445 return 0;
4446 }
4447
4448 void iwl_rx_queue_reset(struct iwl_priv *priv, struct iwl_rx_queue *rxq)
4449 {
4450 unsigned long flags;
4451 int i;
4452 spin_lock_irqsave(&rxq->lock, flags);
4453 INIT_LIST_HEAD(&rxq->rx_free);
4454 INIT_LIST_HEAD(&rxq->rx_used);
4455 /* Fill the rx_used queue with _all_ of the Rx buffers */
4456 for (i = 0; i < RX_FREE_BUFFERS + RX_QUEUE_SIZE; i++) {
4457 /* In the reset function, these buffers may have been allocated
4458 * to an SKB, so we need to unmap and free potential storage */
4459 if (rxq->pool[i].skb != NULL) {
4460 pci_unmap_single(priv->pci_dev,
4461 rxq->pool[i].dma_addr,
4462 IWL_RX_BUF_SIZE, PCI_DMA_FROMDEVICE);
4463 priv->alloc_rxb_skb--;
4464 dev_kfree_skb(rxq->pool[i].skb);
4465 rxq->pool[i].skb = NULL;
4466 }
4467 list_add_tail(&rxq->pool[i].list, &rxq->rx_used);
4468 }
4469
4470 /* Set us so that we have processed and used all buffers, but have
4471 * not restocked the Rx queue with fresh buffers */
4472 rxq->read = rxq->write = 0;
4473 rxq->free_count = 0;
4474 spin_unlock_irqrestore(&rxq->lock, flags);
4475 }
4476
4477 /* Convert linear signal-to-noise ratio into dB */
4478 static u8 ratio2dB[100] = {
4479 /* 0 1 2 3 4 5 6 7 8 9 */
4480 0, 0, 6, 10, 12, 14, 16, 17, 18, 19, /* 00 - 09 */
4481 20, 21, 22, 22, 23, 23, 24, 25, 26, 26, /* 10 - 19 */
4482 26, 26, 26, 27, 27, 28, 28, 28, 29, 29, /* 20 - 29 */
4483 29, 30, 30, 30, 31, 31, 31, 31, 32, 32, /* 30 - 39 */
4484 32, 32, 32, 33, 33, 33, 33, 33, 34, 34, /* 40 - 49 */
4485 34, 34, 34, 34, 35, 35, 35, 35, 35, 35, /* 50 - 59 */
4486 36, 36, 36, 36, 36, 36, 36, 37, 37, 37, /* 60 - 69 */
4487 37, 37, 37, 37, 37, 38, 38, 38, 38, 38, /* 70 - 79 */
4488 38, 38, 38, 38, 38, 39, 39, 39, 39, 39, /* 80 - 89 */
4489 39, 39, 39, 39, 39, 40, 40, 40, 40, 40 /* 90 - 99 */
4490 };
4491
4492 /* Calculates a relative dB value from a ratio of linear
4493 * (i.e. not dB) signal levels.
4494 * Conversion assumes that levels are voltages (20*log), not powers (10*log). */
4495 int iwl_calc_db_from_ratio(int sig_ratio)
4496 {
4497 /* Anything above 1000:1 just report as 60 dB */
4498 if (sig_ratio > 1000)
4499 return 60;
4500
4501 /* Above 100:1, divide by 10 and use table,
4502 * add 20 dB to make up for divide by 10 */
4503 if (sig_ratio > 100)
4504 return (20 + (int)ratio2dB[sig_ratio/10]);
4505
4506 /* We shouldn't see this */
4507 if (sig_ratio < 1)
4508 return 0;
4509
4510 /* Use table for ratios 1:1 - 99:1 */
4511 return (int)ratio2dB[sig_ratio];
4512 }
4513
4514 #define PERFECT_RSSI (-20) /* dBm */
4515 #define WORST_RSSI (-95) /* dBm */
4516 #define RSSI_RANGE (PERFECT_RSSI - WORST_RSSI)
4517
4518 /* Calculate an indication of rx signal quality (a percentage, not dBm!).
4519 * See http://www.ces.clemson.edu/linux/signal_quality.shtml for info
4520 * about formulas used below. */
4521 int iwl_calc_sig_qual(int rssi_dbm, int noise_dbm)
4522 {
4523 int sig_qual;
4524 int degradation = PERFECT_RSSI - rssi_dbm;
4525
4526 /* If we get a noise measurement, use signal-to-noise ratio (SNR)
4527 * as indicator; formula is (signal dbm - noise dbm).
4528 * SNR at or above 40 is a great signal (100%).
4529 * Below that, scale to fit SNR of 0 - 40 dB within 0 - 100% indicator.
4530 * Weakest usable signal is usually 10 - 15 dB SNR. */
4531 if (noise_dbm) {
4532 if (rssi_dbm - noise_dbm >= 40)
4533 return 100;
4534 else if (rssi_dbm < noise_dbm)
4535 return 0;
4536 sig_qual = ((rssi_dbm - noise_dbm) * 5) / 2;
4537
4538 /* Else use just the signal level.
4539 * This formula is a least squares fit of data points collected and
4540 * compared with a reference system that had a percentage (%) display
4541 * for signal quality. */
4542 } else
4543 sig_qual = (100 * (RSSI_RANGE * RSSI_RANGE) - degradation *
4544 (15 * RSSI_RANGE + 62 * degradation)) /
4545 (RSSI_RANGE * RSSI_RANGE);
4546
4547 if (sig_qual > 100)
4548 sig_qual = 100;
4549 else if (sig_qual < 1)
4550 sig_qual = 0;
4551
4552 return sig_qual;
4553 }
4554
4555 /**
4556 * iwl_rx_handle - Main entry function for receiving responses from the uCode
4557 *
4558 * Uses the priv->rx_handlers callback function array to invoke
4559 * the appropriate handlers, including command responses,
4560 * frame-received notifications, and other notifications.
4561 */
4562 static void iwl_rx_handle(struct iwl_priv *priv)
4563 {
4564 struct iwl_rx_mem_buffer *rxb;
4565 struct iwl_rx_packet *pkt;
4566 struct iwl_rx_queue *rxq = &priv->rxq;
4567 u32 r, i;
4568 int reclaim;
4569 unsigned long flags;
4570
4571 r = iwl_hw_get_rx_read(priv);
4572 i = rxq->read;
4573
4574 /* Rx interrupt, but nothing sent from uCode */
4575 if (i == r)
4576 IWL_DEBUG(IWL_DL_RX | IWL_DL_ISR, "r = %d, i = %d\n", r, i);
4577
4578 while (i != r) {
4579 rxb = rxq->queue[i];
4580
4581 /* If an RXB doesn't have a queue slot associated with it
4582 * then a bug has been introduced in the queue refilling
4583 * routines -- catch it here */
4584 BUG_ON(rxb == NULL);
4585
4586 rxq->queue[i] = NULL;
4587
4588 pci_dma_sync_single_for_cpu(priv->pci_dev, rxb->dma_addr,
4589 IWL_RX_BUF_SIZE,
4590 PCI_DMA_FROMDEVICE);
4591 pkt = (struct iwl_rx_packet *)rxb->skb->data;
4592
4593 /* Reclaim a command buffer only if this packet is a response
4594 * to a (driver-originated) command.
4595 * If the packet (e.g. Rx frame) originated from uCode,
4596 * there is no command buffer to reclaim.
4597 * Ucode should set SEQ_RX_FRAME bit if ucode-originated,
4598 * but apparently a few don't get set; catch them here. */
4599 reclaim = !(pkt->hdr.sequence & SEQ_RX_FRAME) &&
4600 (pkt->hdr.cmd != REPLY_RX_PHY_CMD) &&
4601 (pkt->hdr.cmd != REPLY_4965_RX) &&
4602 (pkt->hdr.cmd != REPLY_COMPRESSED_BA) &&
4603 (pkt->hdr.cmd != STATISTICS_NOTIFICATION) &&
4604 (pkt->hdr.cmd != REPLY_TX);
4605
4606 /* Based on type of command response or notification,
4607 * handle those that need handling via function in
4608 * rx_handlers table. See iwl_setup_rx_handlers() */
4609 if (priv->rx_handlers[pkt->hdr.cmd]) {
4610 IWL_DEBUG(IWL_DL_HOST_COMMAND | IWL_DL_RX | IWL_DL_ISR,
4611 "r = %d, i = %d, %s, 0x%02x\n", r, i,
4612 get_cmd_string(pkt->hdr.cmd), pkt->hdr.cmd);
4613 priv->rx_handlers[pkt->hdr.cmd] (priv, rxb);
4614 } else {
4615 /* No handling needed */
4616 IWL_DEBUG(IWL_DL_HOST_COMMAND | IWL_DL_RX | IWL_DL_ISR,
4617 "r %d i %d No handler needed for %s, 0x%02x\n",
4618 r, i, get_cmd_string(pkt->hdr.cmd),
4619 pkt->hdr.cmd);
4620 }
4621
4622 if (reclaim) {
4623 /* Invoke any callbacks, transfer the skb to caller,
4624 * and fire off the (possibly) blocking iwl_send_cmd()
4625 * as we reclaim the driver command queue */
4626 if (rxb && rxb->skb)
4627 iwl_tx_cmd_complete(priv, rxb);
4628 else
4629 IWL_WARNING("Claim null rxb?\n");
4630 }
4631
4632 /* For now we just don't re-use anything. We can tweak this
4633 * later to try and re-use notification packets and SKBs that
4634 * fail to Rx correctly */
4635 if (rxb->skb != NULL) {
4636 priv->alloc_rxb_skb--;
4637 dev_kfree_skb_any(rxb->skb);
4638 rxb->skb = NULL;
4639 }
4640
4641 pci_unmap_single(priv->pci_dev, rxb->dma_addr,
4642 IWL_RX_BUF_SIZE, PCI_DMA_FROMDEVICE);
4643 spin_lock_irqsave(&rxq->lock, flags);
4644 list_add_tail(&rxb->list, &priv->rxq.rx_used);
4645 spin_unlock_irqrestore(&rxq->lock, flags);
4646 i = (i + 1) & RX_QUEUE_MASK;
4647 }
4648
4649 /* Backtrack one entry */
4650 priv->rxq.read = i;
4651 iwl_rx_queue_restock(priv);
4652 }
4653
4654 int iwl_tx_queue_update_write_ptr(struct iwl_priv *priv,
4655 struct iwl_tx_queue *txq)
4656 {
4657 u32 reg = 0;
4658 int rc = 0;
4659 int txq_id = txq->q.id;
4660
4661 if (txq->need_update == 0)
4662 return rc;
4663
4664 /* if we're trying to save power */
4665 if (test_bit(STATUS_POWER_PMI, &priv->status)) {
4666 /* wake up nic if it's powered down ...
4667 * uCode will wake up, and interrupt us again, so next
4668 * time we'll skip this part. */
4669 reg = iwl_read32(priv, CSR_UCODE_DRV_GP1);
4670
4671 if (reg & CSR_UCODE_DRV_GP1_BIT_MAC_SLEEP) {
4672 IWL_DEBUG_INFO("Requesting wakeup, GP1 = 0x%x\n", reg);
4673 iwl_set_bit(priv, CSR_GP_CNTRL,
4674 CSR_GP_CNTRL_REG_FLAG_MAC_ACCESS_REQ);
4675 return rc;
4676 }
4677
4678 /* restore this queue's parameters in nic hardware. */
4679 rc = iwl_grab_restricted_access(priv);
4680 if (rc)
4681 return rc;
4682 iwl_write_restricted(priv, HBUS_TARG_WRPTR,
4683 txq->q.first_empty | (txq_id << 8));
4684 iwl_release_restricted_access(priv);
4685
4686 /* else not in power-save mode, uCode will never sleep when we're
4687 * trying to tx (during RFKILL, we're not trying to tx). */
4688 } else
4689 iwl_write32(priv, HBUS_TARG_WRPTR,
4690 txq->q.first_empty | (txq_id << 8));
4691
4692 txq->need_update = 0;
4693
4694 return rc;
4695 }
4696
4697 #ifdef CONFIG_IWLWIFI_DEBUG
4698 static void iwl_print_rx_config_cmd(struct iwl_rxon_cmd *rxon)
4699 {
4700 DECLARE_MAC_BUF(mac);
4701
4702 IWL_DEBUG_RADIO("RX CONFIG:\n");
4703 iwl_print_hex_dump(IWL_DL_RADIO, (u8 *) rxon, sizeof(*rxon));
4704 IWL_DEBUG_RADIO("u16 channel: 0x%x\n", le16_to_cpu(rxon->channel));
4705 IWL_DEBUG_RADIO("u32 flags: 0x%08X\n", le32_to_cpu(rxon->flags));
4706 IWL_DEBUG_RADIO("u32 filter_flags: 0x%08x\n",
4707 le32_to_cpu(rxon->filter_flags));
4708 IWL_DEBUG_RADIO("u8 dev_type: 0x%x\n", rxon->dev_type);
4709 IWL_DEBUG_RADIO("u8 ofdm_basic_rates: 0x%02x\n",
4710 rxon->ofdm_basic_rates);
4711 IWL_DEBUG_RADIO("u8 cck_basic_rates: 0x%02x\n", rxon->cck_basic_rates);
4712 IWL_DEBUG_RADIO("u8[6] node_addr: %s\n",
4713 print_mac(mac, rxon->node_addr));
4714 IWL_DEBUG_RADIO("u8[6] bssid_addr: %s\n",
4715 print_mac(mac, rxon->bssid_addr));
4716 IWL_DEBUG_RADIO("u16 assoc_id: 0x%x\n", le16_to_cpu(rxon->assoc_id));
4717 }
4718 #endif
4719
4720 static void iwl_enable_interrupts(struct iwl_priv *priv)
4721 {
4722 IWL_DEBUG_ISR("Enabling interrupts\n");
4723 set_bit(STATUS_INT_ENABLED, &priv->status);
4724 iwl_write32(priv, CSR_INT_MASK, CSR_INI_SET_MASK);
4725 }
4726
4727 static inline void iwl_disable_interrupts(struct iwl_priv *priv)
4728 {
4729 clear_bit(STATUS_INT_ENABLED, &priv->status);
4730
4731 /* disable interrupts from uCode/NIC to host */
4732 iwl_write32(priv, CSR_INT_MASK, 0x00000000);
4733
4734 /* acknowledge/clear/reset any interrupts still pending
4735 * from uCode or flow handler (Rx/Tx DMA) */
4736 iwl_write32(priv, CSR_INT, 0xffffffff);
4737 iwl_write32(priv, CSR_FH_INT_STATUS, 0xffffffff);
4738 IWL_DEBUG_ISR("Disabled interrupts\n");
4739 }
4740
4741 static const char *desc_lookup(int i)
4742 {
4743 switch (i) {
4744 case 1:
4745 return "FAIL";
4746 case 2:
4747 return "BAD_PARAM";
4748 case 3:
4749 return "BAD_CHECKSUM";
4750 case 4:
4751 return "NMI_INTERRUPT";
4752 case 5:
4753 return "SYSASSERT";
4754 case 6:
4755 return "FATAL_ERROR";
4756 }
4757
4758 return "UNKNOWN";
4759 }
4760
4761 #define ERROR_START_OFFSET (1 * sizeof(u32))
4762 #define ERROR_ELEM_SIZE (7 * sizeof(u32))
4763
4764 static void iwl_dump_nic_error_log(struct iwl_priv *priv)
4765 {
4766 u32 data2, line;
4767 u32 desc, time, count, base, data1;
4768 u32 blink1, blink2, ilink1, ilink2;
4769 int rc;
4770
4771 base = le32_to_cpu(priv->card_alive.error_event_table_ptr);
4772
4773 if (!iwl_hw_valid_rtc_data_addr(base)) {
4774 IWL_ERROR("Not valid error log pointer 0x%08X\n", base);
4775 return;
4776 }
4777
4778 rc = iwl_grab_restricted_access(priv);
4779 if (rc) {
4780 IWL_WARNING("Can not read from adapter at this time.\n");
4781 return;
4782 }
4783
4784 count = iwl_read_restricted_mem(priv, base);
4785
4786 if (ERROR_START_OFFSET <= count * ERROR_ELEM_SIZE) {
4787 IWL_ERROR("Start IWL Error Log Dump:\n");
4788 IWL_ERROR("Status: 0x%08lX, Config: %08X count: %d\n",
4789 priv->status, priv->config, count);
4790 }
4791
4792 desc = iwl_read_restricted_mem(priv, base + 1 * sizeof(u32));
4793 blink1 = iwl_read_restricted_mem(priv, base + 3 * sizeof(u32));
4794 blink2 = iwl_read_restricted_mem(priv, base + 4 * sizeof(u32));
4795 ilink1 = iwl_read_restricted_mem(priv, base + 5 * sizeof(u32));
4796 ilink2 = iwl_read_restricted_mem(priv, base + 6 * sizeof(u32));
4797 data1 = iwl_read_restricted_mem(priv, base + 7 * sizeof(u32));
4798 data2 = iwl_read_restricted_mem(priv, base + 8 * sizeof(u32));
4799 line = iwl_read_restricted_mem(priv, base + 9 * sizeof(u32));
4800 time = iwl_read_restricted_mem(priv, base + 11 * sizeof(u32));
4801
4802 IWL_ERROR("Desc Time "
4803 "data1 data2 line\n");
4804 IWL_ERROR("%-13s (#%d) %010u 0x%08X 0x%08X %u\n",
4805 desc_lookup(desc), desc, time, data1, data2, line);
4806 IWL_ERROR("blink1 blink2 ilink1 ilink2\n");
4807 IWL_ERROR("0x%05X 0x%05X 0x%05X 0x%05X\n", blink1, blink2,
4808 ilink1, ilink2);
4809
4810 iwl_release_restricted_access(priv);
4811 }
4812
4813 #define EVENT_START_OFFSET (4 * sizeof(u32))
4814
4815 /**
4816 * iwl_print_event_log - Dump error event log to syslog
4817 *
4818 * NOTE: Must be called with iwl_grab_restricted_access() already obtained!
4819 */
4820 static void iwl_print_event_log(struct iwl_priv *priv, u32 start_idx,
4821 u32 num_events, u32 mode)
4822 {
4823 u32 i;
4824 u32 base; /* SRAM byte address of event log header */
4825 u32 event_size; /* 2 u32s, or 3 u32s if timestamp recorded */
4826 u32 ptr; /* SRAM byte address of log data */
4827 u32 ev, time, data; /* event log data */
4828
4829 if (num_events == 0)
4830 return;
4831
4832 base = le32_to_cpu(priv->card_alive.log_event_table_ptr);
4833
4834 if (mode == 0)
4835 event_size = 2 * sizeof(u32);
4836 else
4837 event_size = 3 * sizeof(u32);
4838
4839 ptr = base + EVENT_START_OFFSET + (start_idx * event_size);
4840
4841 /* "time" is actually "data" for mode 0 (no timestamp).
4842 * place event id # at far right for easier visual parsing. */
4843 for (i = 0; i < num_events; i++) {
4844 ev = iwl_read_restricted_mem(priv, ptr);
4845 ptr += sizeof(u32);
4846 time = iwl_read_restricted_mem(priv, ptr);
4847 ptr += sizeof(u32);
4848 if (mode == 0)
4849 IWL_ERROR("0x%08x\t%04u\n", time, ev); /* data, ev */
4850 else {
4851 data = iwl_read_restricted_mem(priv, ptr);
4852 ptr += sizeof(u32);
4853 IWL_ERROR("%010u\t0x%08x\t%04u\n", time, data, ev);
4854 }
4855 }
4856 }
4857
4858 static void iwl_dump_nic_event_log(struct iwl_priv *priv)
4859 {
4860 int rc;
4861 u32 base; /* SRAM byte address of event log header */
4862 u32 capacity; /* event log capacity in # entries */
4863 u32 mode; /* 0 - no timestamp, 1 - timestamp recorded */
4864 u32 num_wraps; /* # times uCode wrapped to top of log */
4865 u32 next_entry; /* index of next entry to be written by uCode */
4866 u32 size; /* # entries that we'll print */
4867
4868 base = le32_to_cpu(priv->card_alive.log_event_table_ptr);
4869 if (!iwl_hw_valid_rtc_data_addr(base)) {
4870 IWL_ERROR("Invalid event log pointer 0x%08X\n", base);
4871 return;
4872 }
4873
4874 rc = iwl_grab_restricted_access(priv);
4875 if (rc) {
4876 IWL_WARNING("Can not read from adapter at this time.\n");
4877 return;
4878 }
4879
4880 /* event log header */
4881 capacity = iwl_read_restricted_mem(priv, base);
4882 mode = iwl_read_restricted_mem(priv, base + (1 * sizeof(u32)));
4883 num_wraps = iwl_read_restricted_mem(priv, base + (2 * sizeof(u32)));
4884 next_entry = iwl_read_restricted_mem(priv, base + (3 * sizeof(u32)));
4885
4886 size = num_wraps ? capacity : next_entry;
4887
4888 /* bail out if nothing in log */
4889 if (size == 0) {
4890 IWL_ERROR("Start IWL Event Log Dump: nothing in log\n");
4891 iwl_release_restricted_access(priv);
4892 return;
4893 }
4894
4895 IWL_ERROR("Start IWL Event Log Dump: display count %d, wraps %d\n",
4896 size, num_wraps);
4897
4898 /* if uCode has wrapped back to top of log, start at the oldest entry,
4899 * i.e the next one that uCode would fill. */
4900 if (num_wraps)
4901 iwl_print_event_log(priv, next_entry,
4902 capacity - next_entry, mode);
4903
4904 /* (then/else) start at top of log */
4905 iwl_print_event_log(priv, 0, next_entry, mode);
4906
4907 iwl_release_restricted_access(priv);
4908 }
4909
4910 /**
4911 * iwl_irq_handle_error - called for HW or SW error interrupt from card
4912 */
4913 static void iwl_irq_handle_error(struct iwl_priv *priv)
4914 {
4915 /* Set the FW error flag -- cleared on iwl_down */
4916 set_bit(STATUS_FW_ERROR, &priv->status);
4917
4918 /* Cancel currently queued command. */
4919 clear_bit(STATUS_HCMD_ACTIVE, &priv->status);
4920
4921 #ifdef CONFIG_IWLWIFI_DEBUG
4922 if (iwl_debug_level & IWL_DL_FW_ERRORS) {
4923 iwl_dump_nic_error_log(priv);
4924 iwl_dump_nic_event_log(priv);
4925 iwl_print_rx_config_cmd(&priv->staging_rxon);
4926 }
4927 #endif
4928
4929 wake_up_interruptible(&priv->wait_command_queue);
4930
4931 /* Keep the restart process from trying to send host
4932 * commands by clearing the INIT status bit */
4933 clear_bit(STATUS_READY, &priv->status);
4934
4935 if (!test_bit(STATUS_EXIT_PENDING, &priv->status)) {
4936 IWL_DEBUG(IWL_DL_INFO | IWL_DL_FW_ERRORS,
4937 "Restarting adapter due to uCode error.\n");
4938
4939 if (iwl_is_associated(priv)) {
4940 memcpy(&priv->recovery_rxon, &priv->active_rxon,
4941 sizeof(priv->recovery_rxon));
4942 priv->error_recovering = 1;
4943 }
4944 queue_work(priv->workqueue, &priv->restart);
4945 }
4946 }
4947
4948 static void iwl_error_recovery(struct iwl_priv *priv)
4949 {
4950 unsigned long flags;
4951
4952 memcpy(&priv->staging_rxon, &priv->recovery_rxon,
4953 sizeof(priv->staging_rxon));
4954 priv->staging_rxon.filter_flags &= ~RXON_FILTER_ASSOC_MSK;
4955 iwl_commit_rxon(priv);
4956
4957 iwl_rxon_add_station(priv, priv->bssid, 1);
4958
4959 spin_lock_irqsave(&priv->lock, flags);
4960 priv->assoc_id = le16_to_cpu(priv->staging_rxon.assoc_id);
4961 priv->error_recovering = 0;
4962 spin_unlock_irqrestore(&priv->lock, flags);
4963 }
4964
4965 static void iwl_irq_tasklet(struct iwl_priv *priv)
4966 {
4967 u32 inta, handled = 0;
4968 u32 inta_fh;
4969 unsigned long flags;
4970 #ifdef CONFIG_IWLWIFI_DEBUG
4971 u32 inta_mask;
4972 #endif
4973
4974 spin_lock_irqsave(&priv->lock, flags);
4975
4976 /* Ack/clear/reset pending uCode interrupts.
4977 * Note: Some bits in CSR_INT are "OR" of bits in CSR_FH_INT_STATUS,
4978 * and will clear only when CSR_FH_INT_STATUS gets cleared. */
4979 inta = iwl_read32(priv, CSR_INT);
4980 iwl_write32(priv, CSR_INT, inta);
4981
4982 /* Ack/clear/reset pending flow-handler (DMA) interrupts.
4983 * Any new interrupts that happen after this, either while we're
4984 * in this tasklet, or later, will show up in next ISR/tasklet. */
4985 inta_fh = iwl_read32(priv, CSR_FH_INT_STATUS);
4986 iwl_write32(priv, CSR_FH_INT_STATUS, inta_fh);
4987
4988 #ifdef CONFIG_IWLWIFI_DEBUG
4989 if (iwl_debug_level & IWL_DL_ISR) {
4990 inta_mask = iwl_read32(priv, CSR_INT_MASK); /* just for debug */
4991 IWL_DEBUG_ISR("inta 0x%08x, enabled 0x%08x, fh 0x%08x\n",
4992 inta, inta_mask, inta_fh);
4993 }
4994 #endif
4995
4996 /* Since CSR_INT and CSR_FH_INT_STATUS reads and clears are not
4997 * atomic, make sure that inta covers all the interrupts that
4998 * we've discovered, even if FH interrupt came in just after
4999 * reading CSR_INT. */
5000 if (inta_fh & CSR_FH_INT_RX_MASK)
5001 inta |= CSR_INT_BIT_FH_RX;
5002 if (inta_fh & CSR_FH_INT_TX_MASK)
5003 inta |= CSR_INT_BIT_FH_TX;
5004
5005 /* Now service all interrupt bits discovered above. */
5006 if (inta & CSR_INT_BIT_HW_ERR) {
5007 IWL_ERROR("Microcode HW error detected. Restarting.\n");
5008
5009 /* Tell the device to stop sending interrupts */
5010 iwl_disable_interrupts(priv);
5011
5012 iwl_irq_handle_error(priv);
5013
5014 handled |= CSR_INT_BIT_HW_ERR;
5015
5016 spin_unlock_irqrestore(&priv->lock, flags);
5017
5018 return;
5019 }
5020
5021 #ifdef CONFIG_IWLWIFI_DEBUG
5022 if (iwl_debug_level & (IWL_DL_ISR)) {
5023 /* NIC fires this, but we don't use it, redundant with WAKEUP */
5024 if (inta & CSR_INT_BIT_MAC_CLK_ACTV)
5025 IWL_DEBUG_ISR("Microcode started or stopped.\n");
5026
5027 /* Alive notification via Rx interrupt will do the real work */
5028 if (inta & CSR_INT_BIT_ALIVE)
5029 IWL_DEBUG_ISR("Alive interrupt\n");
5030 }
5031 #endif
5032 /* Safely ignore these bits for debug checks below */
5033 inta &= ~(CSR_INT_BIT_MAC_CLK_ACTV | CSR_INT_BIT_ALIVE);
5034
5035 /* HW RF KILL switch toggled (4965 only) */
5036 if (inta & CSR_INT_BIT_RF_KILL) {
5037 int hw_rf_kill = 0;
5038 if (!(iwl_read32(priv, CSR_GP_CNTRL) &
5039 CSR_GP_CNTRL_REG_FLAG_HW_RF_KILL_SW))
5040 hw_rf_kill = 1;
5041
5042 IWL_DEBUG(IWL_DL_INFO | IWL_DL_RF_KILL | IWL_DL_ISR,
5043 "RF_KILL bit toggled to %s.\n",
5044 hw_rf_kill ? "disable radio":"enable radio");
5045
5046 /* Queue restart only if RF_KILL switch was set to "kill"
5047 * when we loaded driver, and is now set to "enable".
5048 * After we're Alive, RF_KILL gets handled by
5049 * iwl_rx_card_state_notif() */
5050 if (!hw_rf_kill && !test_bit(STATUS_ALIVE, &priv->status))
5051 queue_work(priv->workqueue, &priv->restart);
5052
5053 handled |= CSR_INT_BIT_RF_KILL;
5054 }
5055
5056 /* Chip got too hot and stopped itself (4965 only) */
5057 if (inta & CSR_INT_BIT_CT_KILL) {
5058 IWL_ERROR("Microcode CT kill error detected.\n");
5059 handled |= CSR_INT_BIT_CT_KILL;
5060 }
5061
5062 /* Error detected by uCode */
5063 if (inta & CSR_INT_BIT_SW_ERR) {
5064 IWL_ERROR("Microcode SW error detected. Restarting 0x%X.\n",
5065 inta);
5066 iwl_irq_handle_error(priv);
5067 handled |= CSR_INT_BIT_SW_ERR;
5068 }
5069
5070 /* uCode wakes up after power-down sleep */
5071 if (inta & CSR_INT_BIT_WAKEUP) {
5072 IWL_DEBUG_ISR("Wakeup interrupt\n");
5073 iwl_rx_queue_update_write_ptr(priv, &priv->rxq);
5074 iwl_tx_queue_update_write_ptr(priv, &priv->txq[0]);
5075 iwl_tx_queue_update_write_ptr(priv, &priv->txq[1]);
5076 iwl_tx_queue_update_write_ptr(priv, &priv->txq[2]);
5077 iwl_tx_queue_update_write_ptr(priv, &priv->txq[3]);
5078 iwl_tx_queue_update_write_ptr(priv, &priv->txq[4]);
5079 iwl_tx_queue_update_write_ptr(priv, &priv->txq[5]);
5080
5081 handled |= CSR_INT_BIT_WAKEUP;
5082 }
5083
5084 /* All uCode command responses, including Tx command responses,
5085 * Rx "responses" (frame-received notification), and other
5086 * notifications from uCode come through here*/
5087 if (inta & (CSR_INT_BIT_FH_RX | CSR_INT_BIT_SW_RX)) {
5088 iwl_rx_handle(priv);
5089 handled |= (CSR_INT_BIT_FH_RX | CSR_INT_BIT_SW_RX);
5090 }
5091
5092 if (inta & CSR_INT_BIT_FH_TX) {
5093 IWL_DEBUG_ISR("Tx interrupt\n");
5094 handled |= CSR_INT_BIT_FH_TX;
5095 }
5096
5097 if (inta & ~handled)
5098 IWL_ERROR("Unhandled INTA bits 0x%08x\n", inta & ~handled);
5099
5100 if (inta & ~CSR_INI_SET_MASK) {
5101 IWL_WARNING("Disabled INTA bits 0x%08x were pending\n",
5102 inta & ~CSR_INI_SET_MASK);
5103 IWL_WARNING(" with FH_INT = 0x%08x\n", inta_fh);
5104 }
5105
5106 /* Re-enable all interrupts */
5107 iwl_enable_interrupts(priv);
5108
5109 #ifdef CONFIG_IWLWIFI_DEBUG
5110 if (iwl_debug_level & (IWL_DL_ISR)) {
5111 inta = iwl_read32(priv, CSR_INT);
5112 inta_mask = iwl_read32(priv, CSR_INT_MASK);
5113 inta_fh = iwl_read32(priv, CSR_FH_INT_STATUS);
5114 IWL_DEBUG_ISR("End inta 0x%08x, enabled 0x%08x, fh 0x%08x, "
5115 "flags 0x%08lx\n", inta, inta_mask, inta_fh, flags);
5116 }
5117 #endif
5118 spin_unlock_irqrestore(&priv->lock, flags);
5119 }
5120
5121 static irqreturn_t iwl_isr(int irq, void *data)
5122 {
5123 struct iwl_priv *priv = data;
5124 u32 inta, inta_mask;
5125 u32 inta_fh;
5126 if (!priv)
5127 return IRQ_NONE;
5128
5129 spin_lock(&priv->lock);
5130
5131 /* Disable (but don't clear!) interrupts here to avoid
5132 * back-to-back ISRs and sporadic interrupts from our NIC.
5133 * If we have something to service, the tasklet will re-enable ints.
5134 * If we *don't* have something, we'll re-enable before leaving here. */
5135 inta_mask = iwl_read32(priv, CSR_INT_MASK); /* just for debug */
5136 iwl_write32(priv, CSR_INT_MASK, 0x00000000);
5137
5138 /* Discover which interrupts are active/pending */
5139 inta = iwl_read32(priv, CSR_INT);
5140 inta_fh = iwl_read32(priv, CSR_FH_INT_STATUS);
5141
5142 /* Ignore interrupt if there's nothing in NIC to service.
5143 * This may be due to IRQ shared with another device,
5144 * or due to sporadic interrupts thrown from our NIC. */
5145 if (!inta && !inta_fh) {
5146 IWL_DEBUG_ISR("Ignore interrupt, inta == 0, inta_fh == 0\n");
5147 goto none;
5148 }
5149
5150 if ((inta == 0xFFFFFFFF) || ((inta & 0xFFFFFFF0) == 0xa5a5a5a0)) {
5151 /* Hardware disappeared */
5152 IWL_WARNING("HARDWARE GONE?? INTA == 0x%080x\n", inta);
5153 goto none;
5154 }
5155
5156 IWL_DEBUG_ISR("ISR inta 0x%08x, enabled 0x%08x, fh 0x%08x\n",
5157 inta, inta_mask, inta_fh);
5158
5159 /* iwl_irq_tasklet() will service interrupts and re-enable them */
5160 tasklet_schedule(&priv->irq_tasklet);
5161 spin_unlock(&priv->lock);
5162
5163 return IRQ_HANDLED;
5164
5165 none:
5166 /* re-enable interrupts here since we don't have anything to service. */
5167 iwl_enable_interrupts(priv);
5168 spin_unlock(&priv->lock);
5169 return IRQ_NONE;
5170 }
5171
5172 /************************** EEPROM BANDS ****************************
5173 *
5174 * The iwl_eeprom_band definitions below provide the mapping from the
5175 * EEPROM contents to the specific channel number supported for each
5176 * band.
5177 *
5178 * For example, iwl_priv->eeprom.band_3_channels[4] from the band_3
5179 * definition below maps to physical channel 42 in the 5.2GHz spectrum.
5180 * The specific geography and calibration information for that channel
5181 * is contained in the eeprom map itself.
5182 *
5183 * During init, we copy the eeprom information and channel map
5184 * information into priv->channel_info_24/52 and priv->channel_map_24/52
5185 *
5186 * channel_map_24/52 provides the index in the channel_info array for a
5187 * given channel. We have to have two separate maps as there is channel
5188 * overlap with the 2.4GHz and 5.2GHz spectrum as seen in band_1 and
5189 * band_2
5190 *
5191 * A value of 0xff stored in the channel_map indicates that the channel
5192 * is not supported by the hardware at all.
5193 *
5194 * A value of 0xfe in the channel_map indicates that the channel is not
5195 * valid for Tx with the current hardware. This means that
5196 * while the system can tune and receive on a given channel, it may not
5197 * be able to associate or transmit any frames on that
5198 * channel. There is no corresponding channel information for that
5199 * entry.
5200 *
5201 *********************************************************************/
5202
5203 /* 2.4 GHz */
5204 static const u8 iwl_eeprom_band_1[14] = {
5205 1, 2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13, 14
5206 };
5207
5208 /* 5.2 GHz bands */
5209 static const u8 iwl_eeprom_band_2[] = {
5210 183, 184, 185, 187, 188, 189, 192, 196, 7, 8, 11, 12, 16
5211 };
5212
5213 static const u8 iwl_eeprom_band_3[] = { /* 5205-5320MHz */
5214 34, 36, 38, 40, 42, 44, 46, 48, 52, 56, 60, 64
5215 };
5216
5217 static const u8 iwl_eeprom_band_4[] = { /* 5500-5700MHz */
5218 100, 104, 108, 112, 116, 120, 124, 128, 132, 136, 140
5219 };
5220
5221 static const u8 iwl_eeprom_band_5[] = { /* 5725-5825MHz */
5222 145, 149, 153, 157, 161, 165
5223 };
5224
5225 static u8 iwl_eeprom_band_6[] = { /* 2.4 FAT channel */
5226 1, 2, 3, 4, 5, 6, 7
5227 };
5228
5229 static u8 iwl_eeprom_band_7[] = { /* 5.2 FAT channel */
5230 36, 44, 52, 60, 100, 108, 116, 124, 132, 149, 157
5231 };
5232
5233 static void iwl_init_band_reference(const struct iwl_priv *priv, int band,
5234 int *eeprom_ch_count,
5235 const struct iwl_eeprom_channel
5236 **eeprom_ch_info,
5237 const u8 **eeprom_ch_index)
5238 {
5239 switch (band) {
5240 case 1: /* 2.4GHz band */
5241 *eeprom_ch_count = ARRAY_SIZE(iwl_eeprom_band_1);
5242 *eeprom_ch_info = priv->eeprom.band_1_channels;
5243 *eeprom_ch_index = iwl_eeprom_band_1;
5244 break;
5245 case 2: /* 5.2GHz band */
5246 *eeprom_ch_count = ARRAY_SIZE(iwl_eeprom_band_2);
5247 *eeprom_ch_info = priv->eeprom.band_2_channels;
5248 *eeprom_ch_index = iwl_eeprom_band_2;
5249 break;
5250 case 3: /* 5.2GHz band */
5251 *eeprom_ch_count = ARRAY_SIZE(iwl_eeprom_band_3);
5252 *eeprom_ch_info = priv->eeprom.band_3_channels;
5253 *eeprom_ch_index = iwl_eeprom_band_3;
5254 break;
5255 case 4: /* 5.2GHz band */
5256 *eeprom_ch_count = ARRAY_SIZE(iwl_eeprom_band_4);
5257 *eeprom_ch_info = priv->eeprom.band_4_channels;
5258 *eeprom_ch_index = iwl_eeprom_band_4;
5259 break;
5260 case 5: /* 5.2GHz band */
5261 *eeprom_ch_count = ARRAY_SIZE(iwl_eeprom_band_5);
5262 *eeprom_ch_info = priv->eeprom.band_5_channels;
5263 *eeprom_ch_index = iwl_eeprom_band_5;
5264 break;
5265 case 6:
5266 *eeprom_ch_count = ARRAY_SIZE(iwl_eeprom_band_6);
5267 *eeprom_ch_info = priv->eeprom.band_24_channels;
5268 *eeprom_ch_index = iwl_eeprom_band_6;
5269 break;
5270 case 7:
5271 *eeprom_ch_count = ARRAY_SIZE(iwl_eeprom_band_7);
5272 *eeprom_ch_info = priv->eeprom.band_52_channels;
5273 *eeprom_ch_index = iwl_eeprom_band_7;
5274 break;
5275 default:
5276 BUG();
5277 return;
5278 }
5279 }
5280
5281 const struct iwl_channel_info *iwl_get_channel_info(const struct iwl_priv *priv,
5282 int phymode, u16 channel)
5283 {
5284 int i;
5285
5286 switch (phymode) {
5287 case MODE_IEEE80211A:
5288 for (i = 14; i < priv->channel_count; i++) {
5289 if (priv->channel_info[i].channel == channel)
5290 return &priv->channel_info[i];
5291 }
5292 break;
5293
5294 case MODE_IEEE80211B:
5295 case MODE_IEEE80211G:
5296 if (channel >= 1 && channel <= 14)
5297 return &priv->channel_info[channel - 1];
5298 break;
5299
5300 }
5301
5302 return NULL;
5303 }
5304
5305 #define CHECK_AND_PRINT(x) ((eeprom_ch_info[ch].flags & EEPROM_CHANNEL_##x) \
5306 ? # x " " : "")
5307
5308 static int iwl_init_channel_map(struct iwl_priv *priv)
5309 {
5310 int eeprom_ch_count = 0;
5311 const u8 *eeprom_ch_index = NULL;
5312 const struct iwl_eeprom_channel *eeprom_ch_info = NULL;
5313 int band, ch;
5314 struct iwl_channel_info *ch_info;
5315
5316 if (priv->channel_count) {
5317 IWL_DEBUG_INFO("Channel map already initialized.\n");
5318 return 0;
5319 }
5320
5321 if (priv->eeprom.version < 0x2f) {
5322 IWL_WARNING("Unsupported EEPROM version: 0x%04X\n",
5323 priv->eeprom.version);
5324 return -EINVAL;
5325 }
5326
5327 IWL_DEBUG_INFO("Initializing regulatory info from EEPROM\n");
5328
5329 priv->channel_count =
5330 ARRAY_SIZE(iwl_eeprom_band_1) +
5331 ARRAY_SIZE(iwl_eeprom_band_2) +
5332 ARRAY_SIZE(iwl_eeprom_band_3) +
5333 ARRAY_SIZE(iwl_eeprom_band_4) +
5334 ARRAY_SIZE(iwl_eeprom_band_5);
5335
5336 IWL_DEBUG_INFO("Parsing data for %d channels.\n", priv->channel_count);
5337
5338 priv->channel_info = kzalloc(sizeof(struct iwl_channel_info) *
5339 priv->channel_count, GFP_KERNEL);
5340 if (!priv->channel_info) {
5341 IWL_ERROR("Could not allocate channel_info\n");
5342 priv->channel_count = 0;
5343 return -ENOMEM;
5344 }
5345
5346 ch_info = priv->channel_info;
5347
5348 /* Loop through the 5 EEPROM bands adding them in order to the
5349 * channel map we maintain (that contains additional information than
5350 * what just in the EEPROM) */
5351 for (band = 1; band <= 5; band++) {
5352
5353 iwl_init_band_reference(priv, band, &eeprom_ch_count,
5354 &eeprom_ch_info, &eeprom_ch_index);
5355
5356 /* Loop through each band adding each of the channels */
5357 for (ch = 0; ch < eeprom_ch_count; ch++) {
5358 ch_info->channel = eeprom_ch_index[ch];
5359 ch_info->phymode = (band == 1) ? MODE_IEEE80211B :
5360 MODE_IEEE80211A;
5361
5362 /* permanently store EEPROM's channel regulatory flags
5363 * and max power in channel info database. */
5364 ch_info->eeprom = eeprom_ch_info[ch];
5365
5366 /* Copy the run-time flags so they are there even on
5367 * invalid channels */
5368 ch_info->flags = eeprom_ch_info[ch].flags;
5369
5370 if (!(is_channel_valid(ch_info))) {
5371 IWL_DEBUG_INFO("Ch. %d Flags %x [%sGHz] - "
5372 "No traffic\n",
5373 ch_info->channel,
5374 ch_info->flags,
5375 is_channel_a_band(ch_info) ?
5376 "5.2" : "2.4");
5377 ch_info++;
5378 continue;
5379 }
5380
5381 /* Initialize regulatory-based run-time data */
5382 ch_info->max_power_avg = ch_info->curr_txpow =
5383 eeprom_ch_info[ch].max_power_avg;
5384 ch_info->scan_power = eeprom_ch_info[ch].max_power_avg;
5385 ch_info->min_power = 0;
5386
5387 IWL_DEBUG_INFO("Ch. %d [%sGHz] %s%s%s%s%s%s(0x%02x"
5388 " %ddBm): Ad-Hoc %ssupported\n",
5389 ch_info->channel,
5390 is_channel_a_band(ch_info) ?
5391 "5.2" : "2.4",
5392 CHECK_AND_PRINT(IBSS),
5393 CHECK_AND_PRINT(ACTIVE),
5394 CHECK_AND_PRINT(RADAR),
5395 CHECK_AND_PRINT(WIDE),
5396 CHECK_AND_PRINT(NARROW),
5397 CHECK_AND_PRINT(DFS),
5398 eeprom_ch_info[ch].flags,
5399 eeprom_ch_info[ch].max_power_avg,
5400 ((eeprom_ch_info[ch].
5401 flags & EEPROM_CHANNEL_IBSS)
5402 && !(eeprom_ch_info[ch].
5403 flags & EEPROM_CHANNEL_RADAR))
5404 ? "" : "not ");
5405
5406 /* Set the user_txpower_limit to the highest power
5407 * supported by any channel */
5408 if (eeprom_ch_info[ch].max_power_avg >
5409 priv->user_txpower_limit)
5410 priv->user_txpower_limit =
5411 eeprom_ch_info[ch].max_power_avg;
5412
5413 ch_info++;
5414 }
5415 }
5416
5417 for (band = 6; band <= 7; band++) {
5418 int phymode;
5419 u8 fat_extension_chan;
5420
5421 iwl_init_band_reference(priv, band, &eeprom_ch_count,
5422 &eeprom_ch_info, &eeprom_ch_index);
5423
5424 phymode = (band == 6) ? MODE_IEEE80211B : MODE_IEEE80211A;
5425 /* Loop through each band adding each of the channels */
5426 for (ch = 0; ch < eeprom_ch_count; ch++) {
5427
5428 if ((band == 6) &&
5429 ((eeprom_ch_index[ch] == 5) ||
5430 (eeprom_ch_index[ch] == 6) ||
5431 (eeprom_ch_index[ch] == 7)))
5432 fat_extension_chan = HT_IE_EXT_CHANNEL_MAX;
5433 else
5434 fat_extension_chan = HT_IE_EXT_CHANNEL_ABOVE;
5435
5436 iwl4965_set_fat_chan_info(priv, phymode,
5437 eeprom_ch_index[ch],
5438 &(eeprom_ch_info[ch]),
5439 fat_extension_chan);
5440
5441 iwl4965_set_fat_chan_info(priv, phymode,
5442 (eeprom_ch_index[ch] + 4),
5443 &(eeprom_ch_info[ch]),
5444 HT_IE_EXT_CHANNEL_BELOW);
5445 }
5446 }
5447
5448 return 0;
5449 }
5450
5451 /* For active scan, listen ACTIVE_DWELL_TIME (msec) on each channel after
5452 * sending probe req. This should be set long enough to hear probe responses
5453 * from more than one AP. */
5454 #define IWL_ACTIVE_DWELL_TIME_24 (20) /* all times in msec */
5455 #define IWL_ACTIVE_DWELL_TIME_52 (10)
5456
5457 /* For faster active scanning, scan will move to the next channel if fewer than
5458 * PLCP_QUIET_THRESH packets are heard on this channel within
5459 * ACTIVE_QUIET_TIME after sending probe request. This shortens the dwell
5460 * time if it's a quiet channel (nothing responded to our probe, and there's
5461 * no other traffic).
5462 * Disable "quiet" feature by setting PLCP_QUIET_THRESH to 0. */
5463 #define IWL_PLCP_QUIET_THRESH __constant_cpu_to_le16(1) /* packets */
5464 #define IWL_ACTIVE_QUIET_TIME __constant_cpu_to_le16(5) /* msec */
5465
5466 /* For passive scan, listen PASSIVE_DWELL_TIME (msec) on each channel.
5467 * Must be set longer than active dwell time.
5468 * For the most reliable scan, set > AP beacon interval (typically 100msec). */
5469 #define IWL_PASSIVE_DWELL_TIME_24 (20) /* all times in msec */
5470 #define IWL_PASSIVE_DWELL_TIME_52 (10)
5471 #define IWL_PASSIVE_DWELL_BASE (100)
5472 #define IWL_CHANNEL_TUNE_TIME 5
5473
5474 static inline u16 iwl_get_active_dwell_time(struct iwl_priv *priv, int phymode)
5475 {
5476 if (phymode == MODE_IEEE80211A)
5477 return IWL_ACTIVE_DWELL_TIME_52;
5478 else
5479 return IWL_ACTIVE_DWELL_TIME_24;
5480 }
5481
5482 static u16 iwl_get_passive_dwell_time(struct iwl_priv *priv, int phymode)
5483 {
5484 u16 active = iwl_get_active_dwell_time(priv, phymode);
5485 u16 passive = (phymode != MODE_IEEE80211A) ?
5486 IWL_PASSIVE_DWELL_BASE + IWL_PASSIVE_DWELL_TIME_24 :
5487 IWL_PASSIVE_DWELL_BASE + IWL_PASSIVE_DWELL_TIME_52;
5488
5489 if (iwl_is_associated(priv)) {
5490 /* If we're associated, we clamp the maximum passive
5491 * dwell time to be 98% of the beacon interval (minus
5492 * 2 * channel tune time) */
5493 passive = priv->beacon_int;
5494 if ((passive > IWL_PASSIVE_DWELL_BASE) || !passive)
5495 passive = IWL_PASSIVE_DWELL_BASE;
5496 passive = (passive * 98) / 100 - IWL_CHANNEL_TUNE_TIME * 2;
5497 }
5498
5499 if (passive <= active)
5500 passive = active + 1;
5501
5502 return passive;
5503 }
5504
5505 static int iwl_get_channels_for_scan(struct iwl_priv *priv, int phymode,
5506 u8 is_active, u8 direct_mask,
5507 struct iwl_scan_channel *scan_ch)
5508 {
5509 const struct ieee80211_channel *channels = NULL;
5510 const struct ieee80211_hw_mode *hw_mode;
5511 const struct iwl_channel_info *ch_info;
5512 u16 passive_dwell = 0;
5513 u16 active_dwell = 0;
5514 int added, i;
5515
5516 hw_mode = iwl_get_hw_mode(priv, phymode);
5517 if (!hw_mode)
5518 return 0;
5519
5520 channels = hw_mode->channels;
5521
5522 active_dwell = iwl_get_active_dwell_time(priv, phymode);
5523 passive_dwell = iwl_get_passive_dwell_time(priv, phymode);
5524
5525 for (i = 0, added = 0; i < hw_mode->num_channels; i++) {
5526 if (channels[i].chan ==
5527 le16_to_cpu(priv->active_rxon.channel)) {
5528 if (iwl_is_associated(priv)) {
5529 IWL_DEBUG_SCAN
5530 ("Skipping current channel %d\n",
5531 le16_to_cpu(priv->active_rxon.channel));
5532 continue;
5533 }
5534 } else if (priv->only_active_channel)
5535 continue;
5536
5537 scan_ch->channel = channels[i].chan;
5538
5539 ch_info = iwl_get_channel_info(priv, phymode, scan_ch->channel);
5540 if (!is_channel_valid(ch_info)) {
5541 IWL_DEBUG_SCAN("Channel %d is INVALID for this SKU.\n",
5542 scan_ch->channel);
5543 continue;
5544 }
5545
5546 if (!is_active || is_channel_passive(ch_info) ||
5547 !(channels[i].flag & IEEE80211_CHAN_W_ACTIVE_SCAN))
5548 scan_ch->type = 0; /* passive */
5549 else
5550 scan_ch->type = 1; /* active */
5551
5552 if (scan_ch->type & 1)
5553 scan_ch->type |= (direct_mask << 1);
5554
5555 if (is_channel_narrow(ch_info))
5556 scan_ch->type |= (1 << 7);
5557
5558 scan_ch->active_dwell = cpu_to_le16(active_dwell);
5559 scan_ch->passive_dwell = cpu_to_le16(passive_dwell);
5560
5561 /* Set power levels to defaults */
5562 scan_ch->tpc.dsp_atten = 110;
5563 /* scan_pwr_info->tpc.dsp_atten; */
5564
5565 /*scan_pwr_info->tpc.tx_gain; */
5566 if (phymode == MODE_IEEE80211A)
5567 scan_ch->tpc.tx_gain = ((1 << 5) | (3 << 3)) | 3;
5568 else {
5569 scan_ch->tpc.tx_gain = ((1 << 5) | (5 << 3));
5570 /* NOTE: if we were doing 6Mb OFDM for scans we'd use
5571 * power level
5572 scan_ch->tpc.tx_gain = ((1<<5) | (2 << 3)) | 3;
5573 */
5574 }
5575
5576 IWL_DEBUG_SCAN("Scanning %d [%s %d]\n",
5577 scan_ch->channel,
5578 (scan_ch->type & 1) ? "ACTIVE" : "PASSIVE",
5579 (scan_ch->type & 1) ?
5580 active_dwell : passive_dwell);
5581
5582 scan_ch++;
5583 added++;
5584 }
5585
5586 IWL_DEBUG_SCAN("total channels to scan %d \n", added);
5587 return added;
5588 }
5589
5590 static void iwl_reset_channel_flag(struct iwl_priv *priv)
5591 {
5592 int i, j;
5593 for (i = 0; i < 3; i++) {
5594 struct ieee80211_hw_mode *hw_mode = (void *)&priv->modes[i];
5595 for (j = 0; j < hw_mode->num_channels; j++)
5596 hw_mode->channels[j].flag = hw_mode->channels[j].val;
5597 }
5598 }
5599
5600 static void iwl_init_hw_rates(struct iwl_priv *priv,
5601 struct ieee80211_rate *rates)
5602 {
5603 int i;
5604
5605 for (i = 0; i < IWL_RATE_COUNT; i++) {
5606 rates[i].rate = iwl_rates[i].ieee * 5;
5607 rates[i].val = i; /* Rate scaling will work on indexes */
5608 rates[i].val2 = i;
5609 rates[i].flags = IEEE80211_RATE_SUPPORTED;
5610 /* Only OFDM have the bits-per-symbol set */
5611 if ((i <= IWL_LAST_OFDM_RATE) && (i >= IWL_FIRST_OFDM_RATE))
5612 rates[i].flags |= IEEE80211_RATE_OFDM;
5613 else {
5614 /*
5615 * If CCK 1M then set rate flag to CCK else CCK_2
5616 * which is CCK | PREAMBLE2
5617 */
5618 rates[i].flags |= (iwl_rates[i].plcp == 10) ?
5619 IEEE80211_RATE_CCK : IEEE80211_RATE_CCK_2;
5620 }
5621
5622 /* Set up which ones are basic rates... */
5623 if (IWL_BASIC_RATES_MASK & (1 << i))
5624 rates[i].flags |= IEEE80211_RATE_BASIC;
5625 }
5626
5627 iwl4965_init_hw_rates(priv, rates);
5628 }
5629
5630 /**
5631 * iwl_init_geos - Initialize mac80211's geo/channel info based from eeprom
5632 */
5633 static int iwl_init_geos(struct iwl_priv *priv)
5634 {
5635 struct iwl_channel_info *ch;
5636 struct ieee80211_hw_mode *modes;
5637 struct ieee80211_channel *channels;
5638 struct ieee80211_channel *geo_ch;
5639 struct ieee80211_rate *rates;
5640 int i = 0;
5641 enum {
5642 A = 0,
5643 B = 1,
5644 G = 2,
5645 A_11N = 3,
5646 G_11N = 4,
5647 };
5648 int mode_count = 5;
5649
5650 if (priv->modes) {
5651 IWL_DEBUG_INFO("Geography modes already initialized.\n");
5652 set_bit(STATUS_GEO_CONFIGURED, &priv->status);
5653 return 0;
5654 }
5655
5656 modes = kzalloc(sizeof(struct ieee80211_hw_mode) * mode_count,
5657 GFP_KERNEL);
5658 if (!modes)
5659 return -ENOMEM;
5660
5661 channels = kzalloc(sizeof(struct ieee80211_channel) *
5662 priv->channel_count, GFP_KERNEL);
5663 if (!channels) {
5664 kfree(modes);
5665 return -ENOMEM;
5666 }
5667
5668 rates = kzalloc((sizeof(struct ieee80211_rate) * (IWL_MAX_RATES + 1)),
5669 GFP_KERNEL);
5670 if (!rates) {
5671 kfree(modes);
5672 kfree(channels);
5673 return -ENOMEM;
5674 }
5675
5676 /* 0 = 802.11a
5677 * 1 = 802.11b
5678 * 2 = 802.11g
5679 */
5680
5681 /* 5.2GHz channels start after the 2.4GHz channels */
5682 modes[A].mode = MODE_IEEE80211A;
5683 modes[A].channels = &channels[ARRAY_SIZE(iwl_eeprom_band_1)];
5684 modes[A].rates = rates;
5685 modes[A].num_rates = 8; /* just OFDM */
5686 modes[A].rates = &rates[4];
5687 modes[A].num_channels = 0;
5688
5689 modes[B].mode = MODE_IEEE80211B;
5690 modes[B].channels = channels;
5691 modes[B].rates = rates;
5692 modes[B].num_rates = 4; /* just CCK */
5693 modes[B].num_channels = 0;
5694
5695 modes[G].mode = MODE_IEEE80211G;
5696 modes[G].channels = channels;
5697 modes[G].rates = rates;
5698 modes[G].num_rates = 12; /* OFDM & CCK */
5699 modes[G].num_channels = 0;
5700
5701 modes[G_11N].mode = MODE_IEEE80211G;
5702 modes[G_11N].channels = channels;
5703 modes[G_11N].num_rates = 13; /* OFDM & CCK */
5704 modes[G_11N].rates = rates;
5705 modes[G_11N].num_channels = 0;
5706
5707 modes[A_11N].mode = MODE_IEEE80211A;
5708 modes[A_11N].channels = &channels[ARRAY_SIZE(iwl_eeprom_band_1)];
5709 modes[A_11N].rates = &rates[4];
5710 modes[A_11N].num_rates = 9; /* just OFDM */
5711 modes[A_11N].num_channels = 0;
5712
5713 priv->ieee_channels = channels;
5714 priv->ieee_rates = rates;
5715
5716 iwl_init_hw_rates(priv, rates);
5717
5718 for (i = 0, geo_ch = channels; i < priv->channel_count; i++) {
5719 ch = &priv->channel_info[i];
5720
5721 if (!is_channel_valid(ch)) {
5722 IWL_DEBUG_INFO("Channel %d [%sGHz] is restricted -- "
5723 "skipping.\n",
5724 ch->channel, is_channel_a_band(ch) ?
5725 "5.2" : "2.4");
5726 continue;
5727 }
5728
5729 if (is_channel_a_band(ch)) {
5730 geo_ch = &modes[A].channels[modes[A].num_channels++];
5731 modes[A_11N].num_channels++;
5732 } else {
5733 geo_ch = &modes[B].channels[modes[B].num_channels++];
5734 modes[G].num_channels++;
5735 modes[G_11N].num_channels++;
5736 }
5737
5738 geo_ch->freq = ieee80211chan2mhz(ch->channel);
5739 geo_ch->chan = ch->channel;
5740 geo_ch->power_level = ch->max_power_avg;
5741 geo_ch->antenna_max = 0xff;
5742
5743 if (is_channel_valid(ch)) {
5744 geo_ch->flag = IEEE80211_CHAN_W_SCAN;
5745 if (ch->flags & EEPROM_CHANNEL_IBSS)
5746 geo_ch->flag |= IEEE80211_CHAN_W_IBSS;
5747
5748 if (ch->flags & EEPROM_CHANNEL_ACTIVE)
5749 geo_ch->flag |= IEEE80211_CHAN_W_ACTIVE_SCAN;
5750
5751 if (ch->flags & EEPROM_CHANNEL_RADAR)
5752 geo_ch->flag |= IEEE80211_CHAN_W_RADAR_DETECT;
5753
5754 if (ch->max_power_avg > priv->max_channel_txpower_limit)
5755 priv->max_channel_txpower_limit =
5756 ch->max_power_avg;
5757 }
5758
5759 geo_ch->val = geo_ch->flag;
5760 }
5761
5762 if ((modes[A].num_channels == 0) && priv->is_abg) {
5763 printk(KERN_INFO DRV_NAME
5764 ": Incorrectly detected BG card as ABG. Please send "
5765 "your PCI ID 0x%04X:0x%04X to maintainer.\n",
5766 priv->pci_dev->device, priv->pci_dev->subsystem_device);
5767 priv->is_abg = 0;
5768 }
5769
5770 printk(KERN_INFO DRV_NAME
5771 ": Tunable channels: %d 802.11bg, %d 802.11a channels\n",
5772 modes[G].num_channels, modes[A].num_channels);
5773
5774 /*
5775 * NOTE: We register these in preference of order -- the
5776 * stack doesn't currently (as of 7.0.6 / Apr 24 '07) pick
5777 * a phymode based on rates or AP capabilities but seems to
5778 * configure it purely on if the channel being configured
5779 * is supported by a mode -- and the first match is taken
5780 */
5781
5782 if (modes[G].num_channels)
5783 ieee80211_register_hwmode(priv->hw, &modes[G]);
5784 if (modes[B].num_channels)
5785 ieee80211_register_hwmode(priv->hw, &modes[B]);
5786 if (modes[A].num_channels)
5787 ieee80211_register_hwmode(priv->hw, &modes[A]);
5788
5789 priv->modes = modes;
5790 set_bit(STATUS_GEO_CONFIGURED, &priv->status);
5791
5792 return 0;
5793 }
5794
5795 /******************************************************************************
5796 *
5797 * uCode download functions
5798 *
5799 ******************************************************************************/
5800
5801 static void iwl_dealloc_ucode_pci(struct iwl_priv *priv)
5802 {
5803 if (priv->ucode_code.v_addr != NULL) {
5804 pci_free_consistent(priv->pci_dev,
5805 priv->ucode_code.len,
5806 priv->ucode_code.v_addr,
5807 priv->ucode_code.p_addr);
5808 priv->ucode_code.v_addr = NULL;
5809 }
5810 if (priv->ucode_data.v_addr != NULL) {
5811 pci_free_consistent(priv->pci_dev,
5812 priv->ucode_data.len,
5813 priv->ucode_data.v_addr,
5814 priv->ucode_data.p_addr);
5815 priv->ucode_data.v_addr = NULL;
5816 }
5817 if (priv->ucode_data_backup.v_addr != NULL) {
5818 pci_free_consistent(priv->pci_dev,
5819 priv->ucode_data_backup.len,
5820 priv->ucode_data_backup.v_addr,
5821 priv->ucode_data_backup.p_addr);
5822 priv->ucode_data_backup.v_addr = NULL;
5823 }
5824 if (priv->ucode_init.v_addr != NULL) {
5825 pci_free_consistent(priv->pci_dev,
5826 priv->ucode_init.len,
5827 priv->ucode_init.v_addr,
5828 priv->ucode_init.p_addr);
5829 priv->ucode_init.v_addr = NULL;
5830 }
5831 if (priv->ucode_init_data.v_addr != NULL) {
5832 pci_free_consistent(priv->pci_dev,
5833 priv->ucode_init_data.len,
5834 priv->ucode_init_data.v_addr,
5835 priv->ucode_init_data.p_addr);
5836 priv->ucode_init_data.v_addr = NULL;
5837 }
5838 if (priv->ucode_boot.v_addr != NULL) {
5839 pci_free_consistent(priv->pci_dev,
5840 priv->ucode_boot.len,
5841 priv->ucode_boot.v_addr,
5842 priv->ucode_boot.p_addr);
5843 priv->ucode_boot.v_addr = NULL;
5844 }
5845 }
5846
5847 /**
5848 * iwl_verify_inst_full - verify runtime uCode image in card vs. host,
5849 * looking at all data.
5850 */
5851 static int iwl_verify_inst_full(struct iwl_priv *priv, __le32 * image, u32 len)
5852 {
5853 u32 val;
5854 u32 save_len = len;
5855 int rc = 0;
5856 u32 errcnt;
5857
5858 IWL_DEBUG_INFO("ucode inst image size is %u\n", len);
5859
5860 rc = iwl_grab_restricted_access(priv);
5861 if (rc)
5862 return rc;
5863
5864 iwl_write_restricted(priv, HBUS_TARG_MEM_RADDR, RTC_INST_LOWER_BOUND);
5865
5866 errcnt = 0;
5867 for (; len > 0; len -= sizeof(u32), image++) {
5868 /* read data comes through single port, auto-incr addr */
5869 /* NOTE: Use the debugless read so we don't flood kernel log
5870 * if IWL_DL_IO is set */
5871 val = _iwl_read_restricted(priv, HBUS_TARG_MEM_RDAT);
5872 if (val != le32_to_cpu(*image)) {
5873 IWL_ERROR("uCode INST section is invalid at "
5874 "offset 0x%x, is 0x%x, s/b 0x%x\n",
5875 save_len - len, val, le32_to_cpu(*image));
5876 rc = -EIO;
5877 errcnt++;
5878 if (errcnt >= 20)
5879 break;
5880 }
5881 }
5882
5883 iwl_release_restricted_access(priv);
5884
5885 if (!errcnt)
5886 IWL_DEBUG_INFO
5887 ("ucode image in INSTRUCTION memory is good\n");
5888
5889 return rc;
5890 }
5891
5892
5893 /**
5894 * iwl_verify_inst_sparse - verify runtime uCode image in card vs. host,
5895 * using sample data 100 bytes apart. If these sample points are good,
5896 * it's a pretty good bet that everything between them is good, too.
5897 */
5898 static int iwl_verify_inst_sparse(struct iwl_priv *priv, __le32 *image, u32 len)
5899 {
5900 u32 val;
5901 int rc = 0;
5902 u32 errcnt = 0;
5903 u32 i;
5904
5905 IWL_DEBUG_INFO("ucode inst image size is %u\n", len);
5906
5907 rc = iwl_grab_restricted_access(priv);
5908 if (rc)
5909 return rc;
5910
5911 for (i = 0; i < len; i += 100, image += 100/sizeof(u32)) {
5912 /* read data comes through single port, auto-incr addr */
5913 /* NOTE: Use the debugless read so we don't flood kernel log
5914 * if IWL_DL_IO is set */
5915 iwl_write_restricted(priv, HBUS_TARG_MEM_RADDR,
5916 i + RTC_INST_LOWER_BOUND);
5917 val = _iwl_read_restricted(priv, HBUS_TARG_MEM_RDAT);
5918 if (val != le32_to_cpu(*image)) {
5919 #if 0 /* Enable this if you want to see details */
5920 IWL_ERROR("uCode INST section is invalid at "
5921 "offset 0x%x, is 0x%x, s/b 0x%x\n",
5922 i, val, *image);
5923 #endif
5924 rc = -EIO;
5925 errcnt++;
5926 if (errcnt >= 3)
5927 break;
5928 }
5929 }
5930
5931 iwl_release_restricted_access(priv);
5932
5933 return rc;
5934 }
5935
5936
5937 /**
5938 * iwl_verify_ucode - determine which instruction image is in SRAM,
5939 * and verify its contents
5940 */
5941 static int iwl_verify_ucode(struct iwl_priv *priv)
5942 {
5943 __le32 *image;
5944 u32 len;
5945 int rc = 0;
5946
5947 /* Try bootstrap */
5948 image = (__le32 *)priv->ucode_boot.v_addr;
5949 len = priv->ucode_boot.len;
5950 rc = iwl_verify_inst_sparse(priv, image, len);
5951 if (rc == 0) {
5952 IWL_DEBUG_INFO("Bootstrap uCode is good in inst SRAM\n");
5953 return 0;
5954 }
5955
5956 /* Try initialize */
5957 image = (__le32 *)priv->ucode_init.v_addr;
5958 len = priv->ucode_init.len;
5959 rc = iwl_verify_inst_sparse(priv, image, len);
5960 if (rc == 0) {
5961 IWL_DEBUG_INFO("Initialize uCode is good in inst SRAM\n");
5962 return 0;
5963 }
5964
5965 /* Try runtime/protocol */
5966 image = (__le32 *)priv->ucode_code.v_addr;
5967 len = priv->ucode_code.len;
5968 rc = iwl_verify_inst_sparse(priv, image, len);
5969 if (rc == 0) {
5970 IWL_DEBUG_INFO("Runtime uCode is good in inst SRAM\n");
5971 return 0;
5972 }
5973
5974 IWL_ERROR("NO VALID UCODE IMAGE IN INSTRUCTION SRAM!!\n");
5975
5976 /* Show first several data entries in instruction SRAM.
5977 * Selection of bootstrap image is arbitrary. */
5978 image = (__le32 *)priv->ucode_boot.v_addr;
5979 len = priv->ucode_boot.len;
5980 rc = iwl_verify_inst_full(priv, image, len);
5981
5982 return rc;
5983 }
5984
5985
5986 /* check contents of special bootstrap uCode SRAM */
5987 static int iwl_verify_bsm(struct iwl_priv *priv)
5988 {
5989 __le32 *image = priv->ucode_boot.v_addr;
5990 u32 len = priv->ucode_boot.len;
5991 u32 reg;
5992 u32 val;
5993
5994 IWL_DEBUG_INFO("Begin verify bsm\n");
5995
5996 /* verify BSM SRAM contents */
5997 val = iwl_read_restricted_reg(priv, BSM_WR_DWCOUNT_REG);
5998 for (reg = BSM_SRAM_LOWER_BOUND;
5999 reg < BSM_SRAM_LOWER_BOUND + len;
6000 reg += sizeof(u32), image ++) {
6001 val = iwl_read_restricted_reg(priv, reg);
6002 if (val != le32_to_cpu(*image)) {
6003 IWL_ERROR("BSM uCode verification failed at "
6004 "addr 0x%08X+%u (of %u), is 0x%x, s/b 0x%x\n",
6005 BSM_SRAM_LOWER_BOUND,
6006 reg - BSM_SRAM_LOWER_BOUND, len,
6007 val, le32_to_cpu(*image));
6008 return -EIO;
6009 }
6010 }
6011
6012 IWL_DEBUG_INFO("BSM bootstrap uCode image OK\n");
6013
6014 return 0;
6015 }
6016
6017 /**
6018 * iwl_load_bsm - Load bootstrap instructions
6019 *
6020 * BSM operation:
6021 *
6022 * The Bootstrap State Machine (BSM) stores a short bootstrap uCode program
6023 * in special SRAM that does not power down during RFKILL. When powering back
6024 * up after power-saving sleeps (or during initial uCode load), the BSM loads
6025 * the bootstrap program into the on-board processor, and starts it.
6026 *
6027 * The bootstrap program loads (via DMA) instructions and data for a new
6028 * program from host DRAM locations indicated by the host driver in the
6029 * BSM_DRAM_* registers. Once the new program is loaded, it starts
6030 * automatically.
6031 *
6032 * When initializing the NIC, the host driver points the BSM to the
6033 * "initialize" uCode image. This uCode sets up some internal data, then
6034 * notifies host via "initialize alive" that it is complete.
6035 *
6036 * The host then replaces the BSM_DRAM_* pointer values to point to the
6037 * normal runtime uCode instructions and a backup uCode data cache buffer
6038 * (filled initially with starting data values for the on-board processor),
6039 * then triggers the "initialize" uCode to load and launch the runtime uCode,
6040 * which begins normal operation.
6041 *
6042 * When doing a power-save shutdown, runtime uCode saves data SRAM into
6043 * the backup data cache in DRAM before SRAM is powered down.
6044 *
6045 * When powering back up, the BSM loads the bootstrap program. This reloads
6046 * the runtime uCode instructions and the backup data cache into SRAM,
6047 * and re-launches the runtime uCode from where it left off.
6048 */
6049 static int iwl_load_bsm(struct iwl_priv *priv)
6050 {
6051 __le32 *image = priv->ucode_boot.v_addr;
6052 u32 len = priv->ucode_boot.len;
6053 dma_addr_t pinst;
6054 dma_addr_t pdata;
6055 u32 inst_len;
6056 u32 data_len;
6057 int rc;
6058 int i;
6059 u32 done;
6060 u32 reg_offset;
6061
6062 IWL_DEBUG_INFO("Begin load bsm\n");
6063
6064 /* make sure bootstrap program is no larger than BSM's SRAM size */
6065 if (len > IWL_MAX_BSM_SIZE)
6066 return -EINVAL;
6067
6068 /* Tell bootstrap uCode where to find the "Initialize" uCode
6069 * in host DRAM ... bits 31:0 for 3945, bits 35:4 for 4965.
6070 * NOTE: iwl_initialize_alive_start() will replace these values,
6071 * after the "initialize" uCode has run, to point to
6072 * runtime/protocol instructions and backup data cache. */
6073 pinst = priv->ucode_init.p_addr >> 4;
6074 pdata = priv->ucode_init_data.p_addr >> 4;
6075 inst_len = priv->ucode_init.len;
6076 data_len = priv->ucode_init_data.len;
6077
6078 rc = iwl_grab_restricted_access(priv);
6079 if (rc)
6080 return rc;
6081
6082 iwl_write_restricted_reg(priv, BSM_DRAM_INST_PTR_REG, pinst);
6083 iwl_write_restricted_reg(priv, BSM_DRAM_DATA_PTR_REG, pdata);
6084 iwl_write_restricted_reg(priv, BSM_DRAM_INST_BYTECOUNT_REG, inst_len);
6085 iwl_write_restricted_reg(priv, BSM_DRAM_DATA_BYTECOUNT_REG, data_len);
6086
6087 /* Fill BSM memory with bootstrap instructions */
6088 for (reg_offset = BSM_SRAM_LOWER_BOUND;
6089 reg_offset < BSM_SRAM_LOWER_BOUND + len;
6090 reg_offset += sizeof(u32), image++)
6091 _iwl_write_restricted_reg(priv, reg_offset,
6092 le32_to_cpu(*image));
6093
6094 rc = iwl_verify_bsm(priv);
6095 if (rc) {
6096 iwl_release_restricted_access(priv);
6097 return rc;
6098 }
6099
6100 /* Tell BSM to copy from BSM SRAM into instruction SRAM, when asked */
6101 iwl_write_restricted_reg(priv, BSM_WR_MEM_SRC_REG, 0x0);
6102 iwl_write_restricted_reg(priv, BSM_WR_MEM_DST_REG,
6103 RTC_INST_LOWER_BOUND);
6104 iwl_write_restricted_reg(priv, BSM_WR_DWCOUNT_REG, len / sizeof(u32));
6105
6106 /* Load bootstrap code into instruction SRAM now,
6107 * to prepare to load "initialize" uCode */
6108 iwl_write_restricted_reg(priv, BSM_WR_CTRL_REG,
6109 BSM_WR_CTRL_REG_BIT_START);
6110
6111 /* Wait for load of bootstrap uCode to finish */
6112 for (i = 0; i < 100; i++) {
6113 done = iwl_read_restricted_reg(priv, BSM_WR_CTRL_REG);
6114 if (!(done & BSM_WR_CTRL_REG_BIT_START))
6115 break;
6116 udelay(10);
6117 }
6118 if (i < 100)
6119 IWL_DEBUG_INFO("BSM write complete, poll %d iterations\n", i);
6120 else {
6121 IWL_ERROR("BSM write did not complete!\n");
6122 return -EIO;
6123 }
6124
6125 /* Enable future boot loads whenever power management unit triggers it
6126 * (e.g. when powering back up after power-save shutdown) */
6127 iwl_write_restricted_reg(priv, BSM_WR_CTRL_REG,
6128 BSM_WR_CTRL_REG_BIT_START_EN);
6129
6130 iwl_release_restricted_access(priv);
6131
6132 return 0;
6133 }
6134
6135 static void iwl_nic_start(struct iwl_priv *priv)
6136 {
6137 /* Remove all resets to allow NIC to operate */
6138 iwl_write32(priv, CSR_RESET, 0);
6139 }
6140
6141 /**
6142 * iwl_read_ucode - Read uCode images from disk file.
6143 *
6144 * Copy into buffers for card to fetch via bus-mastering
6145 */
6146 static int iwl_read_ucode(struct iwl_priv *priv)
6147 {
6148 struct iwl_ucode *ucode;
6149 int rc = 0;
6150 const struct firmware *ucode_raw;
6151 const char *name = "iwlwifi-4965" IWL4965_UCODE_API ".ucode";
6152 u8 *src;
6153 size_t len;
6154 u32 ver, inst_size, data_size, init_size, init_data_size, boot_size;
6155
6156 /* Ask kernel firmware_class module to get the boot firmware off disk.
6157 * request_firmware() is synchronous, file is in memory on return. */
6158 rc = request_firmware(&ucode_raw, name, &priv->pci_dev->dev);
6159 if (rc < 0) {
6160 IWL_ERROR("%s firmware file req failed: Reason %d\n", name, rc);
6161 goto error;
6162 }
6163
6164 IWL_DEBUG_INFO("Got firmware '%s' file (%zd bytes) from disk\n",
6165 name, ucode_raw->size);
6166
6167 /* Make sure that we got at least our header! */
6168 if (ucode_raw->size < sizeof(*ucode)) {
6169 IWL_ERROR("File size way too small!\n");
6170 rc = -EINVAL;
6171 goto err_release;
6172 }
6173
6174 /* Data from ucode file: header followed by uCode images */
6175 ucode = (void *)ucode_raw->data;
6176
6177 ver = le32_to_cpu(ucode->ver);
6178 inst_size = le32_to_cpu(ucode->inst_size);
6179 data_size = le32_to_cpu(ucode->data_size);
6180 init_size = le32_to_cpu(ucode->init_size);
6181 init_data_size = le32_to_cpu(ucode->init_data_size);
6182 boot_size = le32_to_cpu(ucode->boot_size);
6183
6184 IWL_DEBUG_INFO("f/w package hdr ucode version = 0x%x\n", ver);
6185 IWL_DEBUG_INFO("f/w package hdr runtime inst size = %u\n",
6186 inst_size);
6187 IWL_DEBUG_INFO("f/w package hdr runtime data size = %u\n",
6188 data_size);
6189 IWL_DEBUG_INFO("f/w package hdr init inst size = %u\n",
6190 init_size);
6191 IWL_DEBUG_INFO("f/w package hdr init data size = %u\n",
6192 init_data_size);
6193 IWL_DEBUG_INFO("f/w package hdr boot inst size = %u\n",
6194 boot_size);
6195
6196 /* Verify size of file vs. image size info in file's header */
6197 if (ucode_raw->size < sizeof(*ucode) +
6198 inst_size + data_size + init_size +
6199 init_data_size + boot_size) {
6200
6201 IWL_DEBUG_INFO("uCode file size %d too small\n",
6202 (int)ucode_raw->size);
6203 rc = -EINVAL;
6204 goto err_release;
6205 }
6206
6207 /* Verify that uCode images will fit in card's SRAM */
6208 if (inst_size > IWL_MAX_INST_SIZE) {
6209 IWL_DEBUG_INFO("uCode instr len %d too large to fit in card\n",
6210 (int)inst_size);
6211 rc = -EINVAL;
6212 goto err_release;
6213 }
6214
6215 if (data_size > IWL_MAX_DATA_SIZE) {
6216 IWL_DEBUG_INFO("uCode data len %d too large to fit in card\n",
6217 (int)data_size);
6218 rc = -EINVAL;
6219 goto err_release;
6220 }
6221 if (init_size > IWL_MAX_INST_SIZE) {
6222 IWL_DEBUG_INFO
6223 ("uCode init instr len %d too large to fit in card\n",
6224 (int)init_size);
6225 rc = -EINVAL;
6226 goto err_release;
6227 }
6228 if (init_data_size > IWL_MAX_DATA_SIZE) {
6229 IWL_DEBUG_INFO
6230 ("uCode init data len %d too large to fit in card\n",
6231 (int)init_data_size);
6232 rc = -EINVAL;
6233 goto err_release;
6234 }
6235 if (boot_size > IWL_MAX_BSM_SIZE) {
6236 IWL_DEBUG_INFO
6237 ("uCode boot instr len %d too large to fit in bsm\n",
6238 (int)boot_size);
6239 rc = -EINVAL;
6240 goto err_release;
6241 }
6242
6243 /* Allocate ucode buffers for card's bus-master loading ... */
6244
6245 /* Runtime instructions and 2 copies of data:
6246 * 1) unmodified from disk
6247 * 2) backup cache for save/restore during power-downs */
6248 priv->ucode_code.len = inst_size;
6249 priv->ucode_code.v_addr =
6250 pci_alloc_consistent(priv->pci_dev,
6251 priv->ucode_code.len,
6252 &(priv->ucode_code.p_addr));
6253
6254 priv->ucode_data.len = data_size;
6255 priv->ucode_data.v_addr =
6256 pci_alloc_consistent(priv->pci_dev,
6257 priv->ucode_data.len,
6258 &(priv->ucode_data.p_addr));
6259
6260 priv->ucode_data_backup.len = data_size;
6261 priv->ucode_data_backup.v_addr =
6262 pci_alloc_consistent(priv->pci_dev,
6263 priv->ucode_data_backup.len,
6264 &(priv->ucode_data_backup.p_addr));
6265
6266
6267 /* Initialization instructions and data */
6268 priv->ucode_init.len = init_size;
6269 priv->ucode_init.v_addr =
6270 pci_alloc_consistent(priv->pci_dev,
6271 priv->ucode_init.len,
6272 &(priv->ucode_init.p_addr));
6273
6274 priv->ucode_init_data.len = init_data_size;
6275 priv->ucode_init_data.v_addr =
6276 pci_alloc_consistent(priv->pci_dev,
6277 priv->ucode_init_data.len,
6278 &(priv->ucode_init_data.p_addr));
6279
6280 /* Bootstrap (instructions only, no data) */
6281 priv->ucode_boot.len = boot_size;
6282 priv->ucode_boot.v_addr =
6283 pci_alloc_consistent(priv->pci_dev,
6284 priv->ucode_boot.len,
6285 &(priv->ucode_boot.p_addr));
6286
6287 if (!priv->ucode_code.v_addr || !priv->ucode_data.v_addr ||
6288 !priv->ucode_init.v_addr || !priv->ucode_init_data.v_addr ||
6289 !priv->ucode_boot.v_addr || !priv->ucode_data_backup.v_addr)
6290 goto err_pci_alloc;
6291
6292 /* Copy images into buffers for card's bus-master reads ... */
6293
6294 /* Runtime instructions (first block of data in file) */
6295 src = &ucode->data[0];
6296 len = priv->ucode_code.len;
6297 IWL_DEBUG_INFO("Copying (but not loading) uCode instr len %d\n",
6298 (int)len);
6299 memcpy(priv->ucode_code.v_addr, src, len);
6300 IWL_DEBUG_INFO("uCode instr buf vaddr = 0x%p, paddr = 0x%08x\n",
6301 priv->ucode_code.v_addr, (u32)priv->ucode_code.p_addr);
6302
6303 /* Runtime data (2nd block)
6304 * NOTE: Copy into backup buffer will be done in iwl_up() */
6305 src = &ucode->data[inst_size];
6306 len = priv->ucode_data.len;
6307 IWL_DEBUG_INFO("Copying (but not loading) uCode data len %d\n",
6308 (int)len);
6309 memcpy(priv->ucode_data.v_addr, src, len);
6310 memcpy(priv->ucode_data_backup.v_addr, src, len);
6311
6312 /* Initialization instructions (3rd block) */
6313 if (init_size) {
6314 src = &ucode->data[inst_size + data_size];
6315 len = priv->ucode_init.len;
6316 IWL_DEBUG_INFO("Copying (but not loading) init instr len %d\n",
6317 (int)len);
6318 memcpy(priv->ucode_init.v_addr, src, len);
6319 }
6320
6321 /* Initialization data (4th block) */
6322 if (init_data_size) {
6323 src = &ucode->data[inst_size + data_size + init_size];
6324 len = priv->ucode_init_data.len;
6325 IWL_DEBUG_INFO("Copying (but not loading) init data len %d\n",
6326 (int)len);
6327 memcpy(priv->ucode_init_data.v_addr, src, len);
6328 }
6329
6330 /* Bootstrap instructions (5th block) */
6331 src = &ucode->data[inst_size + data_size + init_size + init_data_size];
6332 len = priv->ucode_boot.len;
6333 IWL_DEBUG_INFO("Copying (but not loading) boot instr len %d\n",
6334 (int)len);
6335 memcpy(priv->ucode_boot.v_addr, src, len);
6336
6337 /* We have our copies now, allow OS release its copies */
6338 release_firmware(ucode_raw);
6339 return 0;
6340
6341 err_pci_alloc:
6342 IWL_ERROR("failed to allocate pci memory\n");
6343 rc = -ENOMEM;
6344 iwl_dealloc_ucode_pci(priv);
6345
6346 err_release:
6347 release_firmware(ucode_raw);
6348
6349 error:
6350 return rc;
6351 }
6352
6353
6354 /**
6355 * iwl_set_ucode_ptrs - Set uCode address location
6356 *
6357 * Tell initialization uCode where to find runtime uCode.
6358 *
6359 * BSM registers initially contain pointers to initialization uCode.
6360 * We need to replace them to load runtime uCode inst and data,
6361 * and to save runtime data when powering down.
6362 */
6363 static int iwl_set_ucode_ptrs(struct iwl_priv *priv)
6364 {
6365 dma_addr_t pinst;
6366 dma_addr_t pdata;
6367 int rc = 0;
6368 unsigned long flags;
6369
6370 /* bits 35:4 for 4965 */
6371 pinst = priv->ucode_code.p_addr >> 4;
6372 pdata = priv->ucode_data_backup.p_addr >> 4;
6373
6374 spin_lock_irqsave(&priv->lock, flags);
6375 rc = iwl_grab_restricted_access(priv);
6376 if (rc) {
6377 spin_unlock_irqrestore(&priv->lock, flags);
6378 return rc;
6379 }
6380
6381 /* Tell bootstrap uCode where to find image to load */
6382 iwl_write_restricted_reg(priv, BSM_DRAM_INST_PTR_REG, pinst);
6383 iwl_write_restricted_reg(priv, BSM_DRAM_DATA_PTR_REG, pdata);
6384 iwl_write_restricted_reg(priv, BSM_DRAM_DATA_BYTECOUNT_REG,
6385 priv->ucode_data.len);
6386
6387 /* Inst bytecount must be last to set up, bit 31 signals uCode
6388 * that all new ptr/size info is in place */
6389 iwl_write_restricted_reg(priv, BSM_DRAM_INST_BYTECOUNT_REG,
6390 priv->ucode_code.len | BSM_DRAM_INST_LOAD);
6391
6392 iwl_release_restricted_access(priv);
6393
6394 spin_unlock_irqrestore(&priv->lock, flags);
6395
6396 IWL_DEBUG_INFO("Runtime uCode pointers are set.\n");
6397
6398 return rc;
6399 }
6400
6401 /**
6402 * iwl_init_alive_start - Called after REPLY_ALIVE notification receieved
6403 *
6404 * Called after REPLY_ALIVE notification received from "initialize" uCode.
6405 *
6406 * The 4965 "initialize" ALIVE reply contains calibration data for:
6407 * Voltage, temperature, and MIMO tx gain correction, now stored in priv
6408 * (3945 does not contain this data).
6409 *
6410 * Tell "initialize" uCode to go ahead and load the runtime uCode.
6411 */
6412 static void iwl_init_alive_start(struct iwl_priv *priv)
6413 {
6414 /* Check alive response for "valid" sign from uCode */
6415 if (priv->card_alive_init.is_valid != UCODE_VALID_OK) {
6416 /* We had an error bringing up the hardware, so take it
6417 * all the way back down so we can try again */
6418 IWL_DEBUG_INFO("Initialize Alive failed.\n");
6419 goto restart;
6420 }
6421
6422 /* Bootstrap uCode has loaded initialize uCode ... verify inst image.
6423 * This is a paranoid check, because we would not have gotten the
6424 * "initialize" alive if code weren't properly loaded. */
6425 if (iwl_verify_ucode(priv)) {
6426 /* Runtime instruction load was bad;
6427 * take it all the way back down so we can try again */
6428 IWL_DEBUG_INFO("Bad \"initialize\" uCode load.\n");
6429 goto restart;
6430 }
6431
6432 /* Calculate temperature */
6433 priv->temperature = iwl4965_get_temperature(priv);
6434
6435 /* Send pointers to protocol/runtime uCode image ... init code will
6436 * load and launch runtime uCode, which will send us another "Alive"
6437 * notification. */
6438 IWL_DEBUG_INFO("Initialization Alive received.\n");
6439 if (iwl_set_ucode_ptrs(priv)) {
6440 /* Runtime instruction load won't happen;
6441 * take it all the way back down so we can try again */
6442 IWL_DEBUG_INFO("Couldn't set up uCode pointers.\n");
6443 goto restart;
6444 }
6445 return;
6446
6447 restart:
6448 queue_work(priv->workqueue, &priv->restart);
6449 }
6450
6451
6452 /**
6453 * iwl_alive_start - called after REPLY_ALIVE notification received
6454 * from protocol/runtime uCode (initialization uCode's
6455 * Alive gets handled by iwl_init_alive_start()).
6456 */
6457 static void iwl_alive_start(struct iwl_priv *priv)
6458 {
6459 int rc = 0;
6460
6461 IWL_DEBUG_INFO("Runtime Alive received.\n");
6462
6463 if (priv->card_alive.is_valid != UCODE_VALID_OK) {
6464 /* We had an error bringing up the hardware, so take it
6465 * all the way back down so we can try again */
6466 IWL_DEBUG_INFO("Alive failed.\n");
6467 goto restart;
6468 }
6469
6470 /* Initialize uCode has loaded Runtime uCode ... verify inst image.
6471 * This is a paranoid check, because we would not have gotten the
6472 * "runtime" alive if code weren't properly loaded. */
6473 if (iwl_verify_ucode(priv)) {
6474 /* Runtime instruction load was bad;
6475 * take it all the way back down so we can try again */
6476 IWL_DEBUG_INFO("Bad runtime uCode load.\n");
6477 goto restart;
6478 }
6479
6480 iwl_clear_stations_table(priv);
6481
6482 rc = iwl4965_alive_notify(priv);
6483 if (rc) {
6484 IWL_WARNING("Could not complete ALIVE transition [ntf]: %d\n",
6485 rc);
6486 goto restart;
6487 }
6488
6489 /* After the ALIVE response, we can process host commands */
6490 set_bit(STATUS_ALIVE, &priv->status);
6491
6492 /* Clear out the uCode error bit if it is set */
6493 clear_bit(STATUS_FW_ERROR, &priv->status);
6494
6495 rc = iwl_init_channel_map(priv);
6496 if (rc) {
6497 IWL_ERROR("initializing regulatory failed: %d\n", rc);
6498 return;
6499 }
6500
6501 iwl_init_geos(priv);
6502
6503 if (iwl_is_rfkill(priv))
6504 return;
6505
6506 if (!priv->mac80211_registered) {
6507 /* Unlock so any user space entry points can call back into
6508 * the driver without a deadlock... */
6509 mutex_unlock(&priv->mutex);
6510 iwl_rate_control_register(priv->hw);
6511 rc = ieee80211_register_hw(priv->hw);
6512 priv->hw->conf.beacon_int = 100;
6513 mutex_lock(&priv->mutex);
6514
6515 if (rc) {
6516 IWL_ERROR("Failed to register network "
6517 "device (error %d)\n", rc);
6518 return;
6519 }
6520
6521 priv->mac80211_registered = 1;
6522
6523 iwl_reset_channel_flag(priv);
6524 } else
6525 ieee80211_start_queues(priv->hw);
6526
6527 priv->active_rate = priv->rates_mask;
6528 priv->active_rate_basic = priv->rates_mask & IWL_BASIC_RATES_MASK;
6529
6530 iwl_send_power_mode(priv, IWL_POWER_LEVEL(priv->power_mode));
6531
6532 if (iwl_is_associated(priv)) {
6533 struct iwl_rxon_cmd *active_rxon =
6534 (struct iwl_rxon_cmd *)(&priv->active_rxon);
6535
6536 memcpy(&priv->staging_rxon, &priv->active_rxon,
6537 sizeof(priv->staging_rxon));
6538 active_rxon->filter_flags &= ~RXON_FILTER_ASSOC_MSK;
6539 } else {
6540 /* Initialize our rx_config data */
6541 iwl_connection_init_rx_config(priv);
6542 memcpy(priv->staging_rxon.node_addr, priv->mac_addr, ETH_ALEN);
6543 }
6544
6545 /* Configure BT coexistence */
6546 iwl_send_bt_config(priv);
6547
6548 /* Configure the adapter for unassociated operation */
6549 iwl_commit_rxon(priv);
6550
6551 /* At this point, the NIC is initialized and operational */
6552 priv->notif_missed_beacons = 0;
6553 set_bit(STATUS_READY, &priv->status);
6554
6555 iwl4965_rf_kill_ct_config(priv);
6556 IWL_DEBUG_INFO("ALIVE processing complete.\n");
6557
6558 if (priv->error_recovering)
6559 iwl_error_recovery(priv);
6560
6561 return;
6562
6563 restart:
6564 queue_work(priv->workqueue, &priv->restart);
6565 }
6566
6567 static void iwl_cancel_deferred_work(struct iwl_priv *priv);
6568
6569 static void __iwl_down(struct iwl_priv *priv)
6570 {
6571 unsigned long flags;
6572 int exit_pending = test_bit(STATUS_EXIT_PENDING, &priv->status);
6573 struct ieee80211_conf *conf = NULL;
6574
6575 IWL_DEBUG_INFO(DRV_NAME " is going down\n");
6576
6577 conf = ieee80211_get_hw_conf(priv->hw);
6578
6579 if (!exit_pending)
6580 set_bit(STATUS_EXIT_PENDING, &priv->status);
6581
6582 iwl_clear_stations_table(priv);
6583
6584 /* Unblock any waiting calls */
6585 wake_up_interruptible_all(&priv->wait_command_queue);
6586
6587 iwl_cancel_deferred_work(priv);
6588
6589 /* Wipe out the EXIT_PENDING status bit if we are not actually
6590 * exiting the module */
6591 if (!exit_pending)
6592 clear_bit(STATUS_EXIT_PENDING, &priv->status);
6593
6594 /* stop and reset the on-board processor */
6595 iwl_write32(priv, CSR_RESET, CSR_RESET_REG_FLAG_NEVO_RESET);
6596
6597 /* tell the device to stop sending interrupts */
6598 iwl_disable_interrupts(priv);
6599
6600 if (priv->mac80211_registered)
6601 ieee80211_stop_queues(priv->hw);
6602
6603 /* If we have not previously called iwl_init() then
6604 * clear all bits but the RF Kill and SUSPEND bits and return */
6605 if (!iwl_is_init(priv)) {
6606 priv->status = test_bit(STATUS_RF_KILL_HW, &priv->status) <<
6607 STATUS_RF_KILL_HW |
6608 test_bit(STATUS_RF_KILL_SW, &priv->status) <<
6609 STATUS_RF_KILL_SW |
6610 test_bit(STATUS_IN_SUSPEND, &priv->status) <<
6611 STATUS_IN_SUSPEND;
6612 goto exit;
6613 }
6614
6615 /* ...otherwise clear out all the status bits but the RF Kill and
6616 * SUSPEND bits and continue taking the NIC down. */
6617 priv->status &= test_bit(STATUS_RF_KILL_HW, &priv->status) <<
6618 STATUS_RF_KILL_HW |
6619 test_bit(STATUS_RF_KILL_SW, &priv->status) <<
6620 STATUS_RF_KILL_SW |
6621 test_bit(STATUS_IN_SUSPEND, &priv->status) <<
6622 STATUS_IN_SUSPEND |
6623 test_bit(STATUS_FW_ERROR, &priv->status) <<
6624 STATUS_FW_ERROR;
6625
6626 spin_lock_irqsave(&priv->lock, flags);
6627 iwl_clear_bit(priv, CSR_GP_CNTRL, CSR_GP_CNTRL_REG_FLAG_MAC_ACCESS_REQ);
6628 spin_unlock_irqrestore(&priv->lock, flags);
6629
6630 iwl_hw_txq_ctx_stop(priv);
6631 iwl_hw_rxq_stop(priv);
6632
6633 spin_lock_irqsave(&priv->lock, flags);
6634 if (!iwl_grab_restricted_access(priv)) {
6635 iwl_write_restricted_reg(priv, APMG_CLK_DIS_REG,
6636 APMG_CLK_VAL_DMA_CLK_RQT);
6637 iwl_release_restricted_access(priv);
6638 }
6639 spin_unlock_irqrestore(&priv->lock, flags);
6640
6641 udelay(5);
6642
6643 iwl_hw_nic_stop_master(priv);
6644 iwl_set_bit(priv, CSR_RESET, CSR_RESET_REG_FLAG_SW_RESET);
6645 iwl_hw_nic_reset(priv);
6646
6647 exit:
6648 memset(&priv->card_alive, 0, sizeof(struct iwl_alive_resp));
6649
6650 if (priv->ibss_beacon)
6651 dev_kfree_skb(priv->ibss_beacon);
6652 priv->ibss_beacon = NULL;
6653
6654 /* clear out any free frames */
6655 iwl_clear_free_frames(priv);
6656 }
6657
6658 static void iwl_down(struct iwl_priv *priv)
6659 {
6660 mutex_lock(&priv->mutex);
6661 __iwl_down(priv);
6662 mutex_unlock(&priv->mutex);
6663 }
6664
6665 #define MAX_HW_RESTARTS 5
6666
6667 static int __iwl_up(struct iwl_priv *priv)
6668 {
6669 DECLARE_MAC_BUF(mac);
6670 int rc, i;
6671 u32 hw_rf_kill = 0;
6672
6673 if (test_bit(STATUS_EXIT_PENDING, &priv->status)) {
6674 IWL_WARNING("Exit pending; will not bring the NIC up\n");
6675 return -EIO;
6676 }
6677
6678 if (test_bit(STATUS_RF_KILL_SW, &priv->status)) {
6679 IWL_WARNING("Radio disabled by SW RF kill (module "
6680 "parameter)\n");
6681 return 0;
6682 }
6683
6684 iwl_write32(priv, CSR_INT, 0xFFFFFFFF);
6685
6686 rc = iwl_hw_nic_init(priv);
6687 if (rc) {
6688 IWL_ERROR("Unable to int nic\n");
6689 return rc;
6690 }
6691
6692 /* make sure rfkill handshake bits are cleared */
6693 iwl_write32(priv, CSR_UCODE_DRV_GP1_CLR, CSR_UCODE_SW_BIT_RFKILL);
6694 iwl_write32(priv, CSR_UCODE_DRV_GP1_CLR,
6695 CSR_UCODE_DRV_GP1_BIT_CMD_BLOCKED);
6696
6697 /* clear (again), then enable host interrupts */
6698 iwl_write32(priv, CSR_INT, 0xFFFFFFFF);
6699 iwl_enable_interrupts(priv);
6700
6701 /* really make sure rfkill handshake bits are cleared */
6702 iwl_write32(priv, CSR_UCODE_DRV_GP1_CLR, CSR_UCODE_SW_BIT_RFKILL);
6703 iwl_write32(priv, CSR_UCODE_DRV_GP1_CLR, CSR_UCODE_SW_BIT_RFKILL);
6704
6705 /* Copy original ucode data image from disk into backup cache.
6706 * This will be used to initialize the on-board processor's
6707 * data SRAM for a clean start when the runtime program first loads. */
6708 memcpy(priv->ucode_data_backup.v_addr, priv->ucode_data.v_addr,
6709 priv->ucode_data.len);
6710
6711 /* If platform's RF_KILL switch is set to KILL,
6712 * wait for BIT_INT_RF_KILL interrupt before loading uCode
6713 * and getting things started */
6714 if (!(iwl_read32(priv, CSR_GP_CNTRL) &
6715 CSR_GP_CNTRL_REG_FLAG_HW_RF_KILL_SW))
6716 hw_rf_kill = 1;
6717
6718 if (test_bit(STATUS_RF_KILL_HW, &priv->status) || hw_rf_kill) {
6719 IWL_WARNING("Radio disabled by HW RF Kill switch\n");
6720 return 0;
6721 }
6722
6723 for (i = 0; i < MAX_HW_RESTARTS; i++) {
6724
6725 iwl_clear_stations_table(priv);
6726
6727 /* load bootstrap state machine,
6728 * load bootstrap program into processor's memory,
6729 * prepare to load the "initialize" uCode */
6730 rc = iwl_load_bsm(priv);
6731
6732 if (rc) {
6733 IWL_ERROR("Unable to set up bootstrap uCode: %d\n", rc);
6734 continue;
6735 }
6736
6737 /* start card; "initialize" will load runtime ucode */
6738 iwl_nic_start(priv);
6739
6740 /* MAC Address location in EEPROM same for 3945/4965 */
6741 get_eeprom_mac(priv, priv->mac_addr);
6742 IWL_DEBUG_INFO("MAC address: %s\n",
6743 print_mac(mac, priv->mac_addr));
6744
6745 SET_IEEE80211_PERM_ADDR(priv->hw, priv->mac_addr);
6746
6747 IWL_DEBUG_INFO(DRV_NAME " is coming up\n");
6748
6749 return 0;
6750 }
6751
6752 set_bit(STATUS_EXIT_PENDING, &priv->status);
6753 __iwl_down(priv);
6754
6755 /* tried to restart and config the device for as long as our
6756 * patience could withstand */
6757 IWL_ERROR("Unable to initialize device after %d attempts.\n", i);
6758 return -EIO;
6759 }
6760
6761
6762 /*****************************************************************************
6763 *
6764 * Workqueue callbacks
6765 *
6766 *****************************************************************************/
6767
6768 static void iwl_bg_init_alive_start(struct work_struct *data)
6769 {
6770 struct iwl_priv *priv =
6771 container_of(data, struct iwl_priv, init_alive_start.work);
6772
6773 if (test_bit(STATUS_EXIT_PENDING, &priv->status))
6774 return;
6775
6776 mutex_lock(&priv->mutex);
6777 iwl_init_alive_start(priv);
6778 mutex_unlock(&priv->mutex);
6779 }
6780
6781 static void iwl_bg_alive_start(struct work_struct *data)
6782 {
6783 struct iwl_priv *priv =
6784 container_of(data, struct iwl_priv, alive_start.work);
6785
6786 if (test_bit(STATUS_EXIT_PENDING, &priv->status))
6787 return;
6788
6789 mutex_lock(&priv->mutex);
6790 iwl_alive_start(priv);
6791 mutex_unlock(&priv->mutex);
6792 }
6793
6794 static void iwl_bg_rf_kill(struct work_struct *work)
6795 {
6796 struct iwl_priv *priv = container_of(work, struct iwl_priv, rf_kill);
6797
6798 wake_up_interruptible(&priv->wait_command_queue);
6799
6800 if (test_bit(STATUS_EXIT_PENDING, &priv->status))
6801 return;
6802
6803 mutex_lock(&priv->mutex);
6804
6805 if (!iwl_is_rfkill(priv)) {
6806 IWL_DEBUG(IWL_DL_INFO | IWL_DL_RF_KILL,
6807 "HW and/or SW RF Kill no longer active, restarting "
6808 "device\n");
6809 if (!test_bit(STATUS_EXIT_PENDING, &priv->status))
6810 queue_work(priv->workqueue, &priv->restart);
6811 } else {
6812
6813 if (!test_bit(STATUS_RF_KILL_HW, &priv->status))
6814 IWL_DEBUG_RF_KILL("Can not turn radio back on - "
6815 "disabled by SW switch\n");
6816 else
6817 IWL_WARNING("Radio Frequency Kill Switch is On:\n"
6818 "Kill switch must be turned off for "
6819 "wireless networking to work.\n");
6820 }
6821 mutex_unlock(&priv->mutex);
6822 }
6823
6824 #define IWL_SCAN_CHECK_WATCHDOG (7 * HZ)
6825
6826 static void iwl_bg_scan_check(struct work_struct *data)
6827 {
6828 struct iwl_priv *priv =
6829 container_of(data, struct iwl_priv, scan_check.work);
6830
6831 if (test_bit(STATUS_EXIT_PENDING, &priv->status))
6832 return;
6833
6834 mutex_lock(&priv->mutex);
6835 if (test_bit(STATUS_SCANNING, &priv->status) ||
6836 test_bit(STATUS_SCAN_ABORTING, &priv->status)) {
6837 IWL_DEBUG(IWL_DL_INFO | IWL_DL_SCAN,
6838 "Scan completion watchdog resetting adapter (%dms)\n",
6839 jiffies_to_msecs(IWL_SCAN_CHECK_WATCHDOG));
6840 if (!test_bit(STATUS_EXIT_PENDING, &priv->status))
6841 queue_work(priv->workqueue, &priv->restart);
6842 }
6843 mutex_unlock(&priv->mutex);
6844 }
6845
6846 static void iwl_bg_request_scan(struct work_struct *data)
6847 {
6848 struct iwl_priv *priv =
6849 container_of(data, struct iwl_priv, request_scan);
6850 struct iwl_host_cmd cmd = {
6851 .id = REPLY_SCAN_CMD,
6852 .len = sizeof(struct iwl_scan_cmd),
6853 .meta.flags = CMD_SIZE_HUGE,
6854 };
6855 int rc = 0;
6856 struct iwl_scan_cmd *scan;
6857 struct ieee80211_conf *conf = NULL;
6858 u8 direct_mask;
6859 int phymode;
6860
6861 conf = ieee80211_get_hw_conf(priv->hw);
6862
6863 mutex_lock(&priv->mutex);
6864
6865 if (!iwl_is_ready(priv)) {
6866 IWL_WARNING("request scan called when driver not ready.\n");
6867 goto done;
6868 }
6869
6870 /* Make sure the scan wasn't cancelled before this queued work
6871 * was given the chance to run... */
6872 if (!test_bit(STATUS_SCANNING, &priv->status))
6873 goto done;
6874
6875 /* This should never be called or scheduled if there is currently
6876 * a scan active in the hardware. */
6877 if (test_bit(STATUS_SCAN_HW, &priv->status)) {
6878 IWL_DEBUG_INFO("Multiple concurrent scan requests in parallel. "
6879 "Ignoring second request.\n");
6880 rc = -EIO;
6881 goto done;
6882 }
6883
6884 if (test_bit(STATUS_EXIT_PENDING, &priv->status)) {
6885 IWL_DEBUG_SCAN("Aborting scan due to device shutdown\n");
6886 goto done;
6887 }
6888
6889 if (test_bit(STATUS_SCAN_ABORTING, &priv->status)) {
6890 IWL_DEBUG_HC("Scan request while abort pending. Queuing.\n");
6891 goto done;
6892 }
6893
6894 if (iwl_is_rfkill(priv)) {
6895 IWL_DEBUG_HC("Aborting scan due to RF Kill activation\n");
6896 goto done;
6897 }
6898
6899 if (!test_bit(STATUS_READY, &priv->status)) {
6900 IWL_DEBUG_HC("Scan request while uninitialized. Queuing.\n");
6901 goto done;
6902 }
6903
6904 if (!priv->scan_bands) {
6905 IWL_DEBUG_HC("Aborting scan due to no requested bands\n");
6906 goto done;
6907 }
6908
6909 if (!priv->scan) {
6910 priv->scan = kmalloc(sizeof(struct iwl_scan_cmd) +
6911 IWL_MAX_SCAN_SIZE, GFP_KERNEL);
6912 if (!priv->scan) {
6913 rc = -ENOMEM;
6914 goto done;
6915 }
6916 }
6917 scan = priv->scan;
6918 memset(scan, 0, sizeof(struct iwl_scan_cmd) + IWL_MAX_SCAN_SIZE);
6919
6920 scan->quiet_plcp_th = IWL_PLCP_QUIET_THRESH;
6921 scan->quiet_time = IWL_ACTIVE_QUIET_TIME;
6922
6923 if (iwl_is_associated(priv)) {
6924 u16 interval = 0;
6925 u32 extra;
6926 u32 suspend_time = 100;
6927 u32 scan_suspend_time = 100;
6928 unsigned long flags;
6929
6930 IWL_DEBUG_INFO("Scanning while associated...\n");
6931
6932 spin_lock_irqsave(&priv->lock, flags);
6933 interval = priv->beacon_int;
6934 spin_unlock_irqrestore(&priv->lock, flags);
6935
6936 scan->suspend_time = 0;
6937 scan->max_out_time = cpu_to_le32(600 * 1024);
6938 if (!interval)
6939 interval = suspend_time;
6940
6941 extra = (suspend_time / interval) << 22;
6942 scan_suspend_time = (extra |
6943 ((suspend_time % interval) * 1024));
6944 scan->suspend_time = cpu_to_le32(scan_suspend_time);
6945 IWL_DEBUG_SCAN("suspend_time 0x%X beacon interval %d\n",
6946 scan_suspend_time, interval);
6947 }
6948
6949 /* We should add the ability for user to lock to PASSIVE ONLY */
6950 if (priv->one_direct_scan) {
6951 IWL_DEBUG_SCAN
6952 ("Kicking off one direct scan for '%s'\n",
6953 iwl_escape_essid(priv->direct_ssid,
6954 priv->direct_ssid_len));
6955 scan->direct_scan[0].id = WLAN_EID_SSID;
6956 scan->direct_scan[0].len = priv->direct_ssid_len;
6957 memcpy(scan->direct_scan[0].ssid,
6958 priv->direct_ssid, priv->direct_ssid_len);
6959 direct_mask = 1;
6960 } else if (!iwl_is_associated(priv)) {
6961 scan->direct_scan[0].id = WLAN_EID_SSID;
6962 scan->direct_scan[0].len = priv->essid_len;
6963 memcpy(scan->direct_scan[0].ssid, priv->essid, priv->essid_len);
6964 direct_mask = 1;
6965 } else
6966 direct_mask = 0;
6967
6968 /* We don't build a direct scan probe request; the uCode will do
6969 * that based on the direct_mask added to each channel entry */
6970 scan->tx_cmd.len = cpu_to_le16(
6971 iwl_fill_probe_req(priv, (struct ieee80211_mgmt *)scan->data,
6972 IWL_MAX_SCAN_SIZE - sizeof(scan), 0));
6973 scan->tx_cmd.tx_flags = TX_CMD_FLG_SEQ_CTL_MSK;
6974 scan->tx_cmd.sta_id = priv->hw_setting.bcast_sta_id;
6975 scan->tx_cmd.stop_time.life_time = TX_CMD_LIFE_TIME_INFINITE;
6976
6977 /* flags + rate selection */
6978
6979 scan->tx_cmd.tx_flags |= cpu_to_le32(0x200);
6980
6981 switch (priv->scan_bands) {
6982 case 2:
6983 scan->flags = RXON_FLG_BAND_24G_MSK | RXON_FLG_AUTO_DETECT_MSK;
6984 scan->tx_cmd.rate_n_flags =
6985 iwl_hw_set_rate_n_flags(IWL_RATE_1M_PLCP,
6986 RATE_MCS_ANT_B_MSK|RATE_MCS_CCK_MSK);
6987
6988 scan->good_CRC_th = 0;
6989 phymode = MODE_IEEE80211G;
6990 break;
6991
6992 case 1:
6993 scan->tx_cmd.rate_n_flags =
6994 iwl_hw_set_rate_n_flags(IWL_RATE_6M_PLCP,
6995 RATE_MCS_ANT_B_MSK);
6996 scan->good_CRC_th = IWL_GOOD_CRC_TH;
6997 phymode = MODE_IEEE80211A;
6998 break;
6999
7000 default:
7001 IWL_WARNING("Invalid scan band count\n");
7002 goto done;
7003 }
7004
7005 /* select Rx chains */
7006
7007 /* Force use of chains B and C (0x6) for scan Rx.
7008 * Avoid A (0x1) because of its off-channel reception on A-band.
7009 * MIMO is not used here, but value is required to make uCode happy. */
7010 scan->rx_chain = RXON_RX_CHAIN_DRIVER_FORCE_MSK |
7011 cpu_to_le16((0x7 << RXON_RX_CHAIN_VALID_POS) |
7012 (0x6 << RXON_RX_CHAIN_FORCE_SEL_POS) |
7013 (0x7 << RXON_RX_CHAIN_FORCE_MIMO_SEL_POS));
7014
7015 if (priv->iw_mode == IEEE80211_IF_TYPE_MNTR)
7016 scan->filter_flags = RXON_FILTER_PROMISC_MSK;
7017
7018 if (direct_mask)
7019 IWL_DEBUG_SCAN
7020 ("Initiating direct scan for %s.\n",
7021 iwl_escape_essid(priv->essid, priv->essid_len));
7022 else
7023 IWL_DEBUG_SCAN("Initiating indirect scan.\n");
7024
7025 scan->channel_count =
7026 iwl_get_channels_for_scan(
7027 priv, phymode, 1, /* active */
7028 direct_mask,
7029 (void *)&scan->data[le16_to_cpu(scan->tx_cmd.len)]);
7030
7031 cmd.len += le16_to_cpu(scan->tx_cmd.len) +
7032 scan->channel_count * sizeof(struct iwl_scan_channel);
7033 cmd.data = scan;
7034 scan->len = cpu_to_le16(cmd.len);
7035
7036 set_bit(STATUS_SCAN_HW, &priv->status);
7037 rc = iwl_send_cmd_sync(priv, &cmd);
7038 if (rc)
7039 goto done;
7040
7041 queue_delayed_work(priv->workqueue, &priv->scan_check,
7042 IWL_SCAN_CHECK_WATCHDOG);
7043
7044 mutex_unlock(&priv->mutex);
7045 return;
7046
7047 done:
7048 /* inform mac80211 sacn aborted */
7049 queue_work(priv->workqueue, &priv->scan_completed);
7050 mutex_unlock(&priv->mutex);
7051 }
7052
7053 static void iwl_bg_up(struct work_struct *data)
7054 {
7055 struct iwl_priv *priv = container_of(data, struct iwl_priv, up);
7056
7057 if (test_bit(STATUS_EXIT_PENDING, &priv->status))
7058 return;
7059
7060 mutex_lock(&priv->mutex);
7061 __iwl_up(priv);
7062 mutex_unlock(&priv->mutex);
7063 }
7064
7065 static void iwl_bg_restart(struct work_struct *data)
7066 {
7067 struct iwl_priv *priv = container_of(data, struct iwl_priv, restart);
7068
7069 if (test_bit(STATUS_EXIT_PENDING, &priv->status))
7070 return;
7071
7072 iwl_down(priv);
7073 queue_work(priv->workqueue, &priv->up);
7074 }
7075
7076 static void iwl_bg_rx_replenish(struct work_struct *data)
7077 {
7078 struct iwl_priv *priv =
7079 container_of(data, struct iwl_priv, rx_replenish);
7080
7081 if (test_bit(STATUS_EXIT_PENDING, &priv->status))
7082 return;
7083
7084 mutex_lock(&priv->mutex);
7085 iwl_rx_replenish(priv);
7086 mutex_unlock(&priv->mutex);
7087 }
7088
7089 static void iwl_bg_post_associate(struct work_struct *data)
7090 {
7091 struct iwl_priv *priv = container_of(data, struct iwl_priv,
7092 post_associate.work);
7093
7094 int rc = 0;
7095 struct ieee80211_conf *conf = NULL;
7096 DECLARE_MAC_BUF(mac);
7097
7098 if (priv->iw_mode == IEEE80211_IF_TYPE_AP) {
7099 IWL_ERROR("%s Should not be called in AP mode\n", __FUNCTION__);
7100 return;
7101 }
7102
7103 IWL_DEBUG_ASSOC("Associated as %d to: %s\n",
7104 priv->assoc_id,
7105 print_mac(mac, priv->active_rxon.bssid_addr));
7106
7107
7108 if (test_bit(STATUS_EXIT_PENDING, &priv->status))
7109 return;
7110
7111 mutex_lock(&priv->mutex);
7112
7113 conf = ieee80211_get_hw_conf(priv->hw);
7114
7115 priv->staging_rxon.filter_flags &= ~RXON_FILTER_ASSOC_MSK;
7116 iwl_commit_rxon(priv);
7117
7118 memset(&priv->rxon_timing, 0, sizeof(struct iwl_rxon_time_cmd));
7119 iwl_setup_rxon_timing(priv);
7120 rc = iwl_send_cmd_pdu(priv, REPLY_RXON_TIMING,
7121 sizeof(priv->rxon_timing), &priv->rxon_timing);
7122 if (rc)
7123 IWL_WARNING("REPLY_RXON_TIMING failed - "
7124 "Attempting to continue.\n");
7125
7126 priv->staging_rxon.filter_flags |= RXON_FILTER_ASSOC_MSK;
7127
7128 #ifdef CONFIG_IWLWIFI_HT
7129 if (priv->is_ht_enabled && priv->current_assoc_ht.is_ht)
7130 iwl4965_set_rxon_ht(priv, &priv->current_assoc_ht);
7131 else {
7132 priv->active_rate_ht[0] = 0;
7133 priv->active_rate_ht[1] = 0;
7134 priv->current_channel_width = IWL_CHANNEL_WIDTH_20MHZ;
7135 }
7136 #endif /* CONFIG_IWLWIFI_HT*/
7137 iwl4965_set_rxon_chain(priv);
7138 priv->staging_rxon.assoc_id = cpu_to_le16(priv->assoc_id);
7139
7140 IWL_DEBUG_ASSOC("assoc id %d beacon interval %d\n",
7141 priv->assoc_id, priv->beacon_int);
7142
7143 if (priv->assoc_capability & WLAN_CAPABILITY_SHORT_PREAMBLE)
7144 priv->staging_rxon.flags |= RXON_FLG_SHORT_PREAMBLE_MSK;
7145 else
7146 priv->staging_rxon.flags &= ~RXON_FLG_SHORT_PREAMBLE_MSK;
7147
7148 if (priv->staging_rxon.flags & RXON_FLG_BAND_24G_MSK) {
7149 if (priv->assoc_capability & WLAN_CAPABILITY_SHORT_SLOT_TIME)
7150 priv->staging_rxon.flags |= RXON_FLG_SHORT_SLOT_MSK;
7151 else
7152 priv->staging_rxon.flags &= ~RXON_FLG_SHORT_SLOT_MSK;
7153
7154 if (priv->iw_mode == IEEE80211_IF_TYPE_IBSS)
7155 priv->staging_rxon.flags &= ~RXON_FLG_SHORT_SLOT_MSK;
7156
7157 }
7158
7159 iwl_commit_rxon(priv);
7160
7161 switch (priv->iw_mode) {
7162 case IEEE80211_IF_TYPE_STA:
7163 iwl_rate_scale_init(priv->hw, IWL_AP_ID);
7164 break;
7165
7166 case IEEE80211_IF_TYPE_IBSS:
7167
7168 /* clear out the station table */
7169 iwl_clear_stations_table(priv);
7170
7171 iwl_rxon_add_station(priv, BROADCAST_ADDR, 0);
7172 iwl_rxon_add_station(priv, priv->bssid, 0);
7173 iwl_rate_scale_init(priv->hw, IWL_STA_ID);
7174 iwl_send_beacon_cmd(priv);
7175
7176 break;
7177
7178 default:
7179 IWL_ERROR("%s Should not be called in %d mode\n",
7180 __FUNCTION__, priv->iw_mode);
7181 break;
7182 }
7183
7184 iwl_sequence_reset(priv);
7185
7186 #ifdef CONFIG_IWLWIFI_SENSITIVITY
7187 /* Enable Rx differential gain and sensitivity calibrations */
7188 iwl4965_chain_noise_reset(priv);
7189 priv->start_calib = 1;
7190 #endif /* CONFIG_IWLWIFI_SENSITIVITY */
7191
7192 if (priv->iw_mode == IEEE80211_IF_TYPE_IBSS)
7193 priv->assoc_station_added = 1;
7194
7195 #ifdef CONFIG_IWLWIFI_QOS
7196 iwl_activate_qos(priv, 0);
7197 #endif /* CONFIG_IWLWIFI_QOS */
7198 mutex_unlock(&priv->mutex);
7199 }
7200
7201 static void iwl_bg_abort_scan(struct work_struct *work)
7202 {
7203 struct iwl_priv *priv = container_of(work, struct iwl_priv,
7204 abort_scan);
7205
7206 if (!iwl_is_ready(priv))
7207 return;
7208
7209 mutex_lock(&priv->mutex);
7210
7211 set_bit(STATUS_SCAN_ABORTING, &priv->status);
7212 iwl_send_scan_abort(priv);
7213
7214 mutex_unlock(&priv->mutex);
7215 }
7216
7217 static void iwl_bg_scan_completed(struct work_struct *work)
7218 {
7219 struct iwl_priv *priv =
7220 container_of(work, struct iwl_priv, scan_completed);
7221
7222 IWL_DEBUG(IWL_DL_INFO | IWL_DL_SCAN, "SCAN complete scan\n");
7223
7224 if (test_bit(STATUS_EXIT_PENDING, &priv->status))
7225 return;
7226
7227 ieee80211_scan_completed(priv->hw);
7228
7229 /* Since setting the TXPOWER may have been deferred while
7230 * performing the scan, fire one off */
7231 mutex_lock(&priv->mutex);
7232 iwl_hw_reg_send_txpower(priv);
7233 mutex_unlock(&priv->mutex);
7234 }
7235
7236 /*****************************************************************************
7237 *
7238 * mac80211 entry point functions
7239 *
7240 *****************************************************************************/
7241
7242 static int iwl_mac_start(struct ieee80211_hw *hw)
7243 {
7244 struct iwl_priv *priv = hw->priv;
7245
7246 IWL_DEBUG_MAC80211("enter\n");
7247
7248 /* we should be verifying the device is ready to be opened */
7249 mutex_lock(&priv->mutex);
7250
7251 priv->is_open = 1;
7252
7253 if (!iwl_is_rfkill(priv))
7254 ieee80211_start_queues(priv->hw);
7255
7256 mutex_unlock(&priv->mutex);
7257 IWL_DEBUG_MAC80211("leave\n");
7258 return 0;
7259 }
7260
7261 static void iwl_mac_stop(struct ieee80211_hw *hw)
7262 {
7263 struct iwl_priv *priv = hw->priv;
7264
7265 IWL_DEBUG_MAC80211("enter\n");
7266 priv->is_open = 0;
7267 /*netif_stop_queue(dev); */
7268 flush_workqueue(priv->workqueue);
7269 IWL_DEBUG_MAC80211("leave\n");
7270 }
7271
7272 static int iwl_mac_tx(struct ieee80211_hw *hw, struct sk_buff *skb,
7273 struct ieee80211_tx_control *ctl)
7274 {
7275 struct iwl_priv *priv = hw->priv;
7276
7277 IWL_DEBUG_MAC80211("enter\n");
7278
7279 if (priv->iw_mode == IEEE80211_IF_TYPE_MNTR) {
7280 IWL_DEBUG_MAC80211("leave - monitor\n");
7281 return -1;
7282 }
7283
7284 IWL_DEBUG_TX("dev->xmit(%d bytes) at rate 0x%02x\n", skb->len,
7285 ctl->tx_rate);
7286
7287 if (iwl_tx_skb(priv, skb, ctl))
7288 dev_kfree_skb_any(skb);
7289
7290 IWL_DEBUG_MAC80211("leave\n");
7291 return 0;
7292 }
7293
7294 static int iwl_mac_add_interface(struct ieee80211_hw *hw,
7295 struct ieee80211_if_init_conf *conf)
7296 {
7297 struct iwl_priv *priv = hw->priv;
7298 unsigned long flags;
7299 DECLARE_MAC_BUF(mac);
7300
7301 IWL_DEBUG_MAC80211("enter: id %d, type %d\n", conf->if_id, conf->type);
7302 if (conf->mac_addr)
7303 IWL_DEBUG_MAC80211("enter: MAC %s\n",
7304 print_mac(mac, conf->mac_addr));
7305
7306 if (priv->interface_id) {
7307 IWL_DEBUG_MAC80211("leave - interface_id != 0\n");
7308 return 0;
7309 }
7310
7311 spin_lock_irqsave(&priv->lock, flags);
7312 priv->interface_id = conf->if_id;
7313
7314 spin_unlock_irqrestore(&priv->lock, flags);
7315
7316 mutex_lock(&priv->mutex);
7317 iwl_set_mode(priv, conf->type);
7318
7319 IWL_DEBUG_MAC80211("leave\n");
7320 mutex_unlock(&priv->mutex);
7321
7322 return 0;
7323 }
7324
7325 /**
7326 * iwl_mac_config - mac80211 config callback
7327 *
7328 * We ignore conf->flags & IEEE80211_CONF_SHORT_SLOT_TIME since it seems to
7329 * be set inappropriately and the driver currently sets the hardware up to
7330 * use it whenever needed.
7331 */
7332 static int iwl_mac_config(struct ieee80211_hw *hw, struct ieee80211_conf *conf)
7333 {
7334 struct iwl_priv *priv = hw->priv;
7335 const struct iwl_channel_info *ch_info;
7336 unsigned long flags;
7337
7338 mutex_lock(&priv->mutex);
7339 IWL_DEBUG_MAC80211("enter to channel %d\n", conf->channel);
7340
7341 if (!iwl_is_ready(priv)) {
7342 IWL_DEBUG_MAC80211("leave - not ready\n");
7343 mutex_unlock(&priv->mutex);
7344 return -EIO;
7345 }
7346
7347 /* TODO: Figure out how to get ieee80211_local->sta_scanning w/ only
7348 * what is exposed through include/ declrations */
7349 if (unlikely(!iwl_param_disable_hw_scan &&
7350 test_bit(STATUS_SCANNING, &priv->status))) {
7351 IWL_DEBUG_MAC80211("leave - scanning\n");
7352 mutex_unlock(&priv->mutex);
7353 return 0;
7354 }
7355
7356 spin_lock_irqsave(&priv->lock, flags);
7357
7358 ch_info = iwl_get_channel_info(priv, conf->phymode, conf->channel);
7359 if (!is_channel_valid(ch_info)) {
7360 IWL_DEBUG_SCAN("Channel %d [%d] is INVALID for this SKU.\n",
7361 conf->channel, conf->phymode);
7362 IWL_DEBUG_MAC80211("leave - invalid channel\n");
7363 spin_unlock_irqrestore(&priv->lock, flags);
7364 mutex_unlock(&priv->mutex);
7365 return -EINVAL;
7366 }
7367
7368 #ifdef CONFIG_IWLWIFI_HT
7369 /* if we are switching fron ht to 2.4 clear flags
7370 * from any ht related info since 2.4 does not
7371 * support ht */
7372 if ((le16_to_cpu(priv->staging_rxon.channel) != conf->channel)
7373 #ifdef IEEE80211_CONF_CHANNEL_SWITCH
7374 && !(conf->flags & IEEE80211_CONF_CHANNEL_SWITCH)
7375 #endif
7376 )
7377 priv->staging_rxon.flags = 0;
7378 #endif /* CONFIG_IWLWIFI_HT */
7379
7380 iwl_set_rxon_channel(priv, conf->phymode, conf->channel);
7381
7382 iwl_set_flags_for_phymode(priv, conf->phymode);
7383
7384 /* The list of supported rates and rate mask can be different
7385 * for each phymode; since the phymode may have changed, reset
7386 * the rate mask to what mac80211 lists */
7387 iwl_set_rate(priv);
7388
7389 spin_unlock_irqrestore(&priv->lock, flags);
7390
7391 #ifdef IEEE80211_CONF_CHANNEL_SWITCH
7392 if (conf->flags & IEEE80211_CONF_CHANNEL_SWITCH) {
7393 iwl_hw_channel_switch(priv, conf->channel);
7394 mutex_unlock(&priv->mutex);
7395 return 0;
7396 }
7397 #endif
7398
7399 iwl_radio_kill_sw(priv, !conf->radio_enabled);
7400
7401 if (!conf->radio_enabled) {
7402 IWL_DEBUG_MAC80211("leave - radio disabled\n");
7403 mutex_unlock(&priv->mutex);
7404 return 0;
7405 }
7406
7407 if (iwl_is_rfkill(priv)) {
7408 IWL_DEBUG_MAC80211("leave - RF kill\n");
7409 mutex_unlock(&priv->mutex);
7410 return -EIO;
7411 }
7412
7413 iwl_set_rate(priv);
7414
7415 if (memcmp(&priv->active_rxon,
7416 &priv->staging_rxon, sizeof(priv->staging_rxon)))
7417 iwl_commit_rxon(priv);
7418 else
7419 IWL_DEBUG_INFO("No re-sending same RXON configuration.\n");
7420
7421 IWL_DEBUG_MAC80211("leave\n");
7422
7423 mutex_unlock(&priv->mutex);
7424
7425 return 0;
7426 }
7427
7428 static void iwl_config_ap(struct iwl_priv *priv)
7429 {
7430 int rc = 0;
7431
7432 if (priv->status & STATUS_EXIT_PENDING)
7433 return;
7434
7435 /* The following should be done only at AP bring up */
7436 if ((priv->active_rxon.filter_flags & RXON_FILTER_ASSOC_MSK) == 0) {
7437
7438 /* RXON - unassoc (to set timing command) */
7439 priv->staging_rxon.filter_flags &= ~RXON_FILTER_ASSOC_MSK;
7440 iwl_commit_rxon(priv);
7441
7442 /* RXON Timing */
7443 memset(&priv->rxon_timing, 0, sizeof(struct iwl_rxon_time_cmd));
7444 iwl_setup_rxon_timing(priv);
7445 rc = iwl_send_cmd_pdu(priv, REPLY_RXON_TIMING,
7446 sizeof(priv->rxon_timing), &priv->rxon_timing);
7447 if (rc)
7448 IWL_WARNING("REPLY_RXON_TIMING failed - "
7449 "Attempting to continue.\n");
7450
7451 iwl4965_set_rxon_chain(priv);
7452
7453 /* FIXME: what should be the assoc_id for AP? */
7454 priv->staging_rxon.assoc_id = cpu_to_le16(priv->assoc_id);
7455 if (priv->assoc_capability & WLAN_CAPABILITY_SHORT_PREAMBLE)
7456 priv->staging_rxon.flags |=
7457 RXON_FLG_SHORT_PREAMBLE_MSK;
7458 else
7459 priv->staging_rxon.flags &=
7460 ~RXON_FLG_SHORT_PREAMBLE_MSK;
7461
7462 if (priv->staging_rxon.flags & RXON_FLG_BAND_24G_MSK) {
7463 if (priv->assoc_capability &
7464 WLAN_CAPABILITY_SHORT_SLOT_TIME)
7465 priv->staging_rxon.flags |=
7466 RXON_FLG_SHORT_SLOT_MSK;
7467 else
7468 priv->staging_rxon.flags &=
7469 ~RXON_FLG_SHORT_SLOT_MSK;
7470
7471 if (priv->iw_mode == IEEE80211_IF_TYPE_IBSS)
7472 priv->staging_rxon.flags &=
7473 ~RXON_FLG_SHORT_SLOT_MSK;
7474 }
7475 /* restore RXON assoc */
7476 priv->staging_rxon.filter_flags |= RXON_FILTER_ASSOC_MSK;
7477 iwl_commit_rxon(priv);
7478 #ifdef CONFIG_IWLWIFI_QOS
7479 iwl_activate_qos(priv, 1);
7480 #endif
7481 iwl_rxon_add_station(priv, BROADCAST_ADDR, 0);
7482 }
7483 iwl_send_beacon_cmd(priv);
7484
7485 /* FIXME - we need to add code here to detect a totally new
7486 * configuration, reset the AP, unassoc, rxon timing, assoc,
7487 * clear sta table, add BCAST sta... */
7488 }
7489
7490 static int iwl_mac_config_interface(struct ieee80211_hw *hw, int if_id,
7491 struct ieee80211_if_conf *conf)
7492 {
7493 struct iwl_priv *priv = hw->priv;
7494 DECLARE_MAC_BUF(mac);
7495 unsigned long flags;
7496 int rc;
7497
7498 if (conf == NULL)
7499 return -EIO;
7500
7501 if ((priv->iw_mode == IEEE80211_IF_TYPE_AP) &&
7502 (!conf->beacon || !conf->ssid_len)) {
7503 IWL_DEBUG_MAC80211
7504 ("Leaving in AP mode because HostAPD is not ready.\n");
7505 return 0;
7506 }
7507
7508 mutex_lock(&priv->mutex);
7509
7510 IWL_DEBUG_MAC80211("enter: interface id %d\n", if_id);
7511 if (conf->bssid)
7512 IWL_DEBUG_MAC80211("bssid: %s\n",
7513 print_mac(mac, conf->bssid));
7514
7515 /*
7516 * very dubious code was here; the probe filtering flag is never set:
7517 *
7518 if (unlikely(test_bit(STATUS_SCANNING, &priv->status)) &&
7519 !(priv->hw->flags & IEEE80211_HW_NO_PROBE_FILTERING)) {
7520 */
7521 if (unlikely(test_bit(STATUS_SCANNING, &priv->status))) {
7522 IWL_DEBUG_MAC80211("leave - scanning\n");
7523 mutex_unlock(&priv->mutex);
7524 return 0;
7525 }
7526
7527 if (priv->interface_id != if_id) {
7528 IWL_DEBUG_MAC80211("leave - interface_id != if_id\n");
7529 mutex_unlock(&priv->mutex);
7530 return 0;
7531 }
7532
7533 if (priv->iw_mode == IEEE80211_IF_TYPE_AP) {
7534 if (!conf->bssid) {
7535 conf->bssid = priv->mac_addr;
7536 memcpy(priv->bssid, priv->mac_addr, ETH_ALEN);
7537 IWL_DEBUG_MAC80211("bssid was set to: %s\n",
7538 print_mac(mac, conf->bssid));
7539 }
7540 if (priv->ibss_beacon)
7541 dev_kfree_skb(priv->ibss_beacon);
7542
7543 priv->ibss_beacon = conf->beacon;
7544 }
7545
7546 if (conf->bssid && !is_zero_ether_addr(conf->bssid) &&
7547 !is_multicast_ether_addr(conf->bssid)) {
7548 /* If there is currently a HW scan going on in the background
7549 * then we need to cancel it else the RXON below will fail. */
7550 if (iwl_scan_cancel_timeout(priv, 100)) {
7551 IWL_WARNING("Aborted scan still in progress "
7552 "after 100ms\n");
7553 IWL_DEBUG_MAC80211("leaving - scan abort failed.\n");
7554 mutex_unlock(&priv->mutex);
7555 return -EAGAIN;
7556 }
7557 memcpy(priv->staging_rxon.bssid_addr, conf->bssid, ETH_ALEN);
7558
7559 /* TODO: Audit driver for usage of these members and see
7560 * if mac80211 deprecates them (priv->bssid looks like it
7561 * shouldn't be there, but I haven't scanned the IBSS code
7562 * to verify) - jpk */
7563 memcpy(priv->bssid, conf->bssid, ETH_ALEN);
7564
7565 if (priv->iw_mode == IEEE80211_IF_TYPE_AP)
7566 iwl_config_ap(priv);
7567 else {
7568 priv->staging_rxon.filter_flags |=
7569 RXON_FILTER_ASSOC_MSK;
7570 rc = iwl_commit_rxon(priv);
7571 if ((priv->iw_mode == IEEE80211_IF_TYPE_STA) && rc)
7572 iwl_rxon_add_station(
7573 priv, priv->active_rxon.bssid_addr, 1);
7574 }
7575
7576 } else {
7577 priv->staging_rxon.filter_flags &= ~RXON_FILTER_ASSOC_MSK;
7578 iwl_commit_rxon(priv);
7579 }
7580
7581 spin_lock_irqsave(&priv->lock, flags);
7582 if (!conf->ssid_len)
7583 memset(priv->essid, 0, IW_ESSID_MAX_SIZE);
7584 else
7585 memcpy(priv->essid, conf->ssid, conf->ssid_len);
7586
7587 priv->essid_len = conf->ssid_len;
7588 spin_unlock_irqrestore(&priv->lock, flags);
7589
7590 IWL_DEBUG_MAC80211("leave\n");
7591 mutex_unlock(&priv->mutex);
7592
7593 return 0;
7594 }
7595
7596 static void iwl_configure_filter(struct ieee80211_hw *hw,
7597 unsigned int changed_flags,
7598 unsigned int *total_flags,
7599 int mc_count, struct dev_addr_list *mc_list)
7600 {
7601 /*
7602 * XXX: dummy
7603 * see also iwl_connection_init_rx_config
7604 */
7605 *total_flags = 0;
7606 }
7607
7608 static void iwl_mac_remove_interface(struct ieee80211_hw *hw,
7609 struct ieee80211_if_init_conf *conf)
7610 {
7611 struct iwl_priv *priv = hw->priv;
7612
7613 IWL_DEBUG_MAC80211("enter\n");
7614
7615 mutex_lock(&priv->mutex);
7616 if (priv->interface_id == conf->if_id) {
7617 priv->interface_id = 0;
7618 memset(priv->bssid, 0, ETH_ALEN);
7619 memset(priv->essid, 0, IW_ESSID_MAX_SIZE);
7620 priv->essid_len = 0;
7621 }
7622 mutex_unlock(&priv->mutex);
7623
7624 IWL_DEBUG_MAC80211("leave\n");
7625
7626 }
7627
7628 #define IWL_DELAY_NEXT_SCAN (HZ*2)
7629 static int iwl_mac_hw_scan(struct ieee80211_hw *hw, u8 *ssid, size_t len)
7630 {
7631 int rc = 0;
7632 unsigned long flags;
7633 struct iwl_priv *priv = hw->priv;
7634
7635 IWL_DEBUG_MAC80211("enter\n");
7636
7637 spin_lock_irqsave(&priv->lock, flags);
7638
7639 if (!iwl_is_ready_rf(priv)) {
7640 rc = -EIO;
7641 IWL_DEBUG_MAC80211("leave - not ready or exit pending\n");
7642 goto out_unlock;
7643 }
7644
7645 if (priv->iw_mode == IEEE80211_IF_TYPE_AP) { /* APs don't scan */
7646 rc = -EIO;
7647 IWL_ERROR("ERROR: APs don't scan\n");
7648 goto out_unlock;
7649 }
7650
7651 /* if we just finished scan ask for delay */
7652 if (priv->last_scan_jiffies &&
7653 time_after(priv->last_scan_jiffies + IWL_DELAY_NEXT_SCAN,
7654 jiffies)) {
7655 rc = -EAGAIN;
7656 goto out_unlock;
7657 }
7658 if (len) {
7659 IWL_DEBUG_SCAN("direct scan for "
7660 "%s [%d]\n ",
7661 iwl_escape_essid(ssid, len), (int)len);
7662
7663 priv->one_direct_scan = 1;
7664 priv->direct_ssid_len = (u8)
7665 min((u8) len, (u8) IW_ESSID_MAX_SIZE);
7666 memcpy(priv->direct_ssid, ssid, priv->direct_ssid_len);
7667 }
7668
7669 rc = iwl_scan_initiate(priv);
7670
7671 IWL_DEBUG_MAC80211("leave\n");
7672
7673 out_unlock:
7674 spin_unlock_irqrestore(&priv->lock, flags);
7675
7676 return rc;
7677 }
7678
7679 static int iwl_mac_set_key(struct ieee80211_hw *hw, enum set_key_cmd cmd,
7680 const u8 *local_addr, const u8 *addr,
7681 struct ieee80211_key_conf *key)
7682 {
7683 struct iwl_priv *priv = hw->priv;
7684 DECLARE_MAC_BUF(mac);
7685 int rc = 0;
7686 u8 sta_id;
7687
7688 IWL_DEBUG_MAC80211("enter\n");
7689
7690 if (!iwl_param_hwcrypto) {
7691 IWL_DEBUG_MAC80211("leave - hwcrypto disabled\n");
7692 return -EOPNOTSUPP;
7693 }
7694
7695 if (is_zero_ether_addr(addr))
7696 /* only support pairwise keys */
7697 return -EOPNOTSUPP;
7698
7699 sta_id = iwl_hw_find_station(priv, addr);
7700 if (sta_id == IWL_INVALID_STATION) {
7701 IWL_DEBUG_MAC80211("leave - %s not in station map.\n",
7702 print_mac(mac, addr));
7703 return -EINVAL;
7704 }
7705
7706 mutex_lock(&priv->mutex);
7707
7708 switch (cmd) {
7709 case SET_KEY:
7710 rc = iwl_update_sta_key_info(priv, key, sta_id);
7711 if (!rc) {
7712 iwl_set_rxon_hwcrypto(priv, 1);
7713 iwl_commit_rxon(priv);
7714 key->hw_key_idx = sta_id;
7715 IWL_DEBUG_MAC80211("set_key success, using hwcrypto\n");
7716 key->flags |= IEEE80211_KEY_FLAG_GENERATE_IV;
7717 }
7718 break;
7719 case DISABLE_KEY:
7720 rc = iwl_clear_sta_key_info(priv, sta_id);
7721 if (!rc) {
7722 iwl_set_rxon_hwcrypto(priv, 0);
7723 iwl_commit_rxon(priv);
7724 IWL_DEBUG_MAC80211("disable hwcrypto key\n");
7725 }
7726 break;
7727 default:
7728 rc = -EINVAL;
7729 }
7730
7731 IWL_DEBUG_MAC80211("leave\n");
7732 mutex_unlock(&priv->mutex);
7733
7734 return rc;
7735 }
7736
7737 static int iwl_mac_conf_tx(struct ieee80211_hw *hw, int queue,
7738 const struct ieee80211_tx_queue_params *params)
7739 {
7740 struct iwl_priv *priv = hw->priv;
7741 #ifdef CONFIG_IWLWIFI_QOS
7742 unsigned long flags;
7743 int q;
7744 #endif /* CONFIG_IWL_QOS */
7745
7746 IWL_DEBUG_MAC80211("enter\n");
7747
7748 if (!iwl_is_ready_rf(priv)) {
7749 IWL_DEBUG_MAC80211("leave - RF not ready\n");
7750 return -EIO;
7751 }
7752
7753 if (queue >= AC_NUM) {
7754 IWL_DEBUG_MAC80211("leave - queue >= AC_NUM %d\n", queue);
7755 return 0;
7756 }
7757
7758 #ifdef CONFIG_IWLWIFI_QOS
7759 if (!priv->qos_data.qos_enable) {
7760 priv->qos_data.qos_active = 0;
7761 IWL_DEBUG_MAC80211("leave - qos not enabled\n");
7762 return 0;
7763 }
7764 q = AC_NUM - 1 - queue;
7765
7766 spin_lock_irqsave(&priv->lock, flags);
7767
7768 priv->qos_data.def_qos_parm.ac[q].cw_min = cpu_to_le16(params->cw_min);
7769 priv->qos_data.def_qos_parm.ac[q].cw_max = cpu_to_le16(params->cw_max);
7770 priv->qos_data.def_qos_parm.ac[q].aifsn = params->aifs;
7771 priv->qos_data.def_qos_parm.ac[q].edca_txop =
7772 cpu_to_le16((params->burst_time * 100));
7773
7774 priv->qos_data.def_qos_parm.ac[q].reserved1 = 0;
7775 priv->qos_data.qos_active = 1;
7776
7777 spin_unlock_irqrestore(&priv->lock, flags);
7778
7779 mutex_lock(&priv->mutex);
7780 if (priv->iw_mode == IEEE80211_IF_TYPE_AP)
7781 iwl_activate_qos(priv, 1);
7782 else if (priv->assoc_id && iwl_is_associated(priv))
7783 iwl_activate_qos(priv, 0);
7784
7785 mutex_unlock(&priv->mutex);
7786
7787 #endif /*CONFIG_IWLWIFI_QOS */
7788
7789 IWL_DEBUG_MAC80211("leave\n");
7790 return 0;
7791 }
7792
7793 static int iwl_mac_get_tx_stats(struct ieee80211_hw *hw,
7794 struct ieee80211_tx_queue_stats *stats)
7795 {
7796 struct iwl_priv *priv = hw->priv;
7797 int i, avail;
7798 struct iwl_tx_queue *txq;
7799 struct iwl_queue *q;
7800 unsigned long flags;
7801
7802 IWL_DEBUG_MAC80211("enter\n");
7803
7804 if (!iwl_is_ready_rf(priv)) {
7805 IWL_DEBUG_MAC80211("leave - RF not ready\n");
7806 return -EIO;
7807 }
7808
7809 spin_lock_irqsave(&priv->lock, flags);
7810
7811 for (i = 0; i < AC_NUM; i++) {
7812 txq = &priv->txq[i];
7813 q = &txq->q;
7814 avail = iwl_queue_space(q);
7815
7816 stats->data[i].len = q->n_window - avail;
7817 stats->data[i].limit = q->n_window - q->high_mark;
7818 stats->data[i].count = q->n_window;
7819
7820 }
7821 spin_unlock_irqrestore(&priv->lock, flags);
7822
7823 IWL_DEBUG_MAC80211("leave\n");
7824
7825 return 0;
7826 }
7827
7828 static int iwl_mac_get_stats(struct ieee80211_hw *hw,
7829 struct ieee80211_low_level_stats *stats)
7830 {
7831 IWL_DEBUG_MAC80211("enter\n");
7832 IWL_DEBUG_MAC80211("leave\n");
7833
7834 return 0;
7835 }
7836
7837 static u64 iwl_mac_get_tsf(struct ieee80211_hw *hw)
7838 {
7839 IWL_DEBUG_MAC80211("enter\n");
7840 IWL_DEBUG_MAC80211("leave\n");
7841
7842 return 0;
7843 }
7844
7845 static void iwl_mac_reset_tsf(struct ieee80211_hw *hw)
7846 {
7847 struct iwl_priv *priv = hw->priv;
7848 unsigned long flags;
7849
7850 mutex_lock(&priv->mutex);
7851 IWL_DEBUG_MAC80211("enter\n");
7852
7853 priv->lq_mngr.lq_ready = 0;
7854 #ifdef CONFIG_IWLWIFI_HT
7855 spin_lock_irqsave(&priv->lock, flags);
7856 memset(&priv->current_assoc_ht, 0, sizeof(struct sta_ht_info));
7857 spin_unlock_irqrestore(&priv->lock, flags);
7858 #ifdef CONFIG_IWLWIFI_HT_AGG
7859 /* if (priv->lq_mngr.agg_ctrl.granted_ba)
7860 iwl4965_turn_off_agg(priv, TID_ALL_SPECIFIED);*/
7861
7862 memset(&(priv->lq_mngr.agg_ctrl), 0, sizeof(struct iwl_agg_control));
7863 priv->lq_mngr.agg_ctrl.tid_traffic_load_threshold = 10;
7864 priv->lq_mngr.agg_ctrl.ba_timeout = 5000;
7865 priv->lq_mngr.agg_ctrl.auto_agg = 1;
7866
7867 if (priv->lq_mngr.agg_ctrl.auto_agg)
7868 priv->lq_mngr.agg_ctrl.requested_ba = TID_ALL_ENABLED;
7869 #endif /*CONFIG_IWLWIFI_HT_AGG */
7870 #endif /* CONFIG_IWLWIFI_HT */
7871
7872 #ifdef CONFIG_IWLWIFI_QOS
7873 iwl_reset_qos(priv);
7874 #endif
7875
7876 cancel_delayed_work(&priv->post_associate);
7877
7878 spin_lock_irqsave(&priv->lock, flags);
7879 priv->assoc_id = 0;
7880 priv->assoc_capability = 0;
7881 priv->call_post_assoc_from_beacon = 0;
7882 priv->assoc_station_added = 0;
7883
7884 /* new association get rid of ibss beacon skb */
7885 if (priv->ibss_beacon)
7886 dev_kfree_skb(priv->ibss_beacon);
7887
7888 priv->ibss_beacon = NULL;
7889
7890 priv->beacon_int = priv->hw->conf.beacon_int;
7891 priv->timestamp1 = 0;
7892 priv->timestamp0 = 0;
7893 if ((priv->iw_mode == IEEE80211_IF_TYPE_STA))
7894 priv->beacon_int = 0;
7895
7896 spin_unlock_irqrestore(&priv->lock, flags);
7897
7898 /* Per mac80211.h: This is only used in IBSS mode... */
7899 if (priv->iw_mode != IEEE80211_IF_TYPE_IBSS) {
7900 IWL_DEBUG_MAC80211("leave - not in IBSS\n");
7901 mutex_unlock(&priv->mutex);
7902 return;
7903 }
7904
7905 if (!iwl_is_ready_rf(priv)) {
7906 IWL_DEBUG_MAC80211("leave - not ready\n");
7907 mutex_unlock(&priv->mutex);
7908 return;
7909 }
7910
7911 priv->only_active_channel = 0;
7912
7913 iwl_set_rate(priv);
7914
7915 mutex_unlock(&priv->mutex);
7916
7917 IWL_DEBUG_MAC80211("leave\n");
7918
7919 }
7920
7921 static int iwl_mac_beacon_update(struct ieee80211_hw *hw, struct sk_buff *skb,
7922 struct ieee80211_tx_control *control)
7923 {
7924 struct iwl_priv *priv = hw->priv;
7925 unsigned long flags;
7926
7927 mutex_lock(&priv->mutex);
7928 IWL_DEBUG_MAC80211("enter\n");
7929
7930 if (!iwl_is_ready_rf(priv)) {
7931 IWL_DEBUG_MAC80211("leave - RF not ready\n");
7932 mutex_unlock(&priv->mutex);
7933 return -EIO;
7934 }
7935
7936 if (priv->iw_mode != IEEE80211_IF_TYPE_IBSS) {
7937 IWL_DEBUG_MAC80211("leave - not IBSS\n");
7938 mutex_unlock(&priv->mutex);
7939 return -EIO;
7940 }
7941
7942 spin_lock_irqsave(&priv->lock, flags);
7943
7944 if (priv->ibss_beacon)
7945 dev_kfree_skb(priv->ibss_beacon);
7946
7947 priv->ibss_beacon = skb;
7948
7949 priv->assoc_id = 0;
7950
7951 IWL_DEBUG_MAC80211("leave\n");
7952 spin_unlock_irqrestore(&priv->lock, flags);
7953
7954 #ifdef CONFIG_IWLWIFI_QOS
7955 iwl_reset_qos(priv);
7956 #endif
7957
7958 queue_work(priv->workqueue, &priv->post_associate.work);
7959
7960 mutex_unlock(&priv->mutex);
7961
7962 return 0;
7963 }
7964
7965 #ifdef CONFIG_IWLWIFI_HT
7966 union ht_cap_info {
7967 struct {
7968 u16 advanced_coding_cap :1;
7969 u16 supported_chan_width_set :1;
7970 u16 mimo_power_save_mode :2;
7971 u16 green_field :1;
7972 u16 short_GI20 :1;
7973 u16 short_GI40 :1;
7974 u16 tx_stbc :1;
7975 u16 rx_stbc :1;
7976 u16 beam_forming :1;
7977 u16 delayed_ba :1;
7978 u16 maximal_amsdu_size :1;
7979 u16 cck_mode_at_40MHz :1;
7980 u16 psmp_support :1;
7981 u16 stbc_ctrl_frame_support :1;
7982 u16 sig_txop_protection_support :1;
7983 };
7984 u16 val;
7985 } __attribute__ ((packed));
7986
7987 union ht_param_info{
7988 struct {
7989 u8 max_rx_ampdu_factor :2;
7990 u8 mpdu_density :3;
7991 u8 reserved :3;
7992 };
7993 u8 val;
7994 } __attribute__ ((packed));
7995
7996 union ht_exra_param_info {
7997 struct {
7998 u8 ext_chan_offset :2;
7999 u8 tx_chan_width :1;
8000 u8 rifs_mode :1;
8001 u8 controlled_access_only :1;
8002 u8 service_interval_granularity :3;
8003 };
8004 u8 val;
8005 } __attribute__ ((packed));
8006
8007 union ht_operation_mode{
8008 struct {
8009 u16 op_mode :2;
8010 u16 non_GF :1;
8011 u16 reserved :13;
8012 };
8013 u16 val;
8014 } __attribute__ ((packed));
8015
8016
8017 static int sta_ht_info_init(struct ieee80211_ht_capability *ht_cap,
8018 struct ieee80211_ht_additional_info *ht_extra,
8019 struct sta_ht_info *ht_info_ap,
8020 struct sta_ht_info *ht_info)
8021 {
8022 union ht_cap_info cap;
8023 union ht_operation_mode op_mode;
8024 union ht_param_info param_info;
8025 union ht_exra_param_info extra_param_info;
8026
8027 IWL_DEBUG_MAC80211("enter: \n");
8028
8029 if (!ht_info) {
8030 IWL_DEBUG_MAC80211("leave: ht_info is NULL\n");
8031 return -1;
8032 }
8033
8034 if (ht_cap) {
8035 cap.val = (u16) le16_to_cpu(ht_cap->capabilities_info);
8036 param_info.val = ht_cap->mac_ht_params_info;
8037 ht_info->is_ht = 1;
8038 if (cap.short_GI20)
8039 ht_info->sgf |= 0x1;
8040 if (cap.short_GI40)
8041 ht_info->sgf |= 0x2;
8042 ht_info->is_green_field = cap.green_field;
8043 ht_info->max_amsdu_size = cap.maximal_amsdu_size;
8044 ht_info->supported_chan_width = cap.supported_chan_width_set;
8045 ht_info->tx_mimo_ps_mode = cap.mimo_power_save_mode;
8046 memcpy(ht_info->supp_rates, ht_cap->supported_mcs_set, 16);
8047
8048 ht_info->ampdu_factor = param_info.max_rx_ampdu_factor;
8049 ht_info->mpdu_density = param_info.mpdu_density;
8050
8051 IWL_DEBUG_MAC80211("SISO mask 0x%X MIMO mask 0x%X \n",
8052 ht_cap->supported_mcs_set[0],
8053 ht_cap->supported_mcs_set[1]);
8054
8055 if (ht_info_ap) {
8056 ht_info->control_channel = ht_info_ap->control_channel;
8057 ht_info->extension_chan_offset =
8058 ht_info_ap->extension_chan_offset;
8059 ht_info->tx_chan_width = ht_info_ap->tx_chan_width;
8060 ht_info->operating_mode = ht_info_ap->operating_mode;
8061 }
8062
8063 if (ht_extra) {
8064 extra_param_info.val = ht_extra->ht_param;
8065 ht_info->control_channel = ht_extra->control_chan;
8066 ht_info->extension_chan_offset =
8067 extra_param_info.ext_chan_offset;
8068 ht_info->tx_chan_width = extra_param_info.tx_chan_width;
8069 op_mode.val = (u16)
8070 le16_to_cpu(ht_extra->operation_mode);
8071 ht_info->operating_mode = op_mode.op_mode;
8072 IWL_DEBUG_MAC80211("control channel %d\n",
8073 ht_extra->control_chan);
8074 }
8075 } else
8076 ht_info->is_ht = 0;
8077
8078 IWL_DEBUG_MAC80211("leave\n");
8079 return 0;
8080 }
8081
8082 static int iwl_mac_conf_ht(struct ieee80211_hw *hw,
8083 struct ieee80211_ht_capability *ht_cap,
8084 struct ieee80211_ht_additional_info *ht_extra)
8085 {
8086 struct iwl_priv *priv = hw->priv;
8087 int rs;
8088
8089 IWL_DEBUG_MAC80211("enter: \n");
8090
8091 rs = sta_ht_info_init(ht_cap, ht_extra, NULL, &priv->current_assoc_ht);
8092 iwl4965_set_rxon_chain(priv);
8093
8094 if (priv && priv->assoc_id &&
8095 (priv->iw_mode == IEEE80211_IF_TYPE_STA)) {
8096 unsigned long flags;
8097
8098 spin_lock_irqsave(&priv->lock, flags);
8099 if (priv->beacon_int)
8100 queue_work(priv->workqueue, &priv->post_associate.work);
8101 else
8102 priv->call_post_assoc_from_beacon = 1;
8103 spin_unlock_irqrestore(&priv->lock, flags);
8104 }
8105
8106 IWL_DEBUG_MAC80211("leave: control channel %d\n",
8107 ht_extra->control_chan);
8108 return rs;
8109
8110 }
8111
8112 static void iwl_set_ht_capab(struct ieee80211_hw *hw,
8113 struct ieee80211_ht_capability *ht_cap,
8114 u8 use_wide_chan)
8115 {
8116 union ht_cap_info cap;
8117 union ht_param_info param_info;
8118
8119 memset(&cap, 0, sizeof(union ht_cap_info));
8120 memset(&param_info, 0, sizeof(union ht_param_info));
8121
8122 cap.maximal_amsdu_size = HT_IE_MAX_AMSDU_SIZE_4K;
8123 cap.green_field = 1;
8124 cap.short_GI20 = 1;
8125 cap.short_GI40 = 1;
8126 cap.supported_chan_width_set = use_wide_chan;
8127 cap.mimo_power_save_mode = 0x3;
8128
8129 param_info.max_rx_ampdu_factor = CFG_HT_RX_AMPDU_FACTOR_DEF;
8130 param_info.mpdu_density = CFG_HT_MPDU_DENSITY_DEF;
8131 ht_cap->capabilities_info = (__le16) cpu_to_le16(cap.val);
8132 ht_cap->mac_ht_params_info = (u8) param_info.val;
8133
8134 ht_cap->supported_mcs_set[0] = 0xff;
8135 ht_cap->supported_mcs_set[1] = 0xff;
8136 ht_cap->supported_mcs_set[4] =
8137 (cap.supported_chan_width_set) ? 0x1: 0x0;
8138 }
8139
8140 static void iwl_mac_get_ht_capab(struct ieee80211_hw *hw,
8141 struct ieee80211_ht_capability *ht_cap)
8142 {
8143 u8 use_wide_channel = 1;
8144 struct iwl_priv *priv = hw->priv;
8145
8146 IWL_DEBUG_MAC80211("enter: \n");
8147 if (priv->channel_width != IWL_CHANNEL_WIDTH_40MHZ)
8148 use_wide_channel = 0;
8149
8150 /* no fat tx allowed on 2.4GHZ */
8151 if (priv->phymode != MODE_IEEE80211A)
8152 use_wide_channel = 0;
8153
8154 iwl_set_ht_capab(hw, ht_cap, use_wide_channel);
8155 IWL_DEBUG_MAC80211("leave: \n");
8156 }
8157 #endif /*CONFIG_IWLWIFI_HT*/
8158
8159 /*****************************************************************************
8160 *
8161 * sysfs attributes
8162 *
8163 *****************************************************************************/
8164
8165 #ifdef CONFIG_IWLWIFI_DEBUG
8166
8167 /*
8168 * The following adds a new attribute to the sysfs representation
8169 * of this device driver (i.e. a new file in /sys/bus/pci/drivers/iwl/)
8170 * used for controlling the debug level.
8171 *
8172 * See the level definitions in iwl for details.
8173 */
8174
8175 static ssize_t show_debug_level(struct device_driver *d, char *buf)
8176 {
8177 return sprintf(buf, "0x%08X\n", iwl_debug_level);
8178 }
8179 static ssize_t store_debug_level(struct device_driver *d,
8180 const char *buf, size_t count)
8181 {
8182 char *p = (char *)buf;
8183 u32 val;
8184
8185 val = simple_strtoul(p, &p, 0);
8186 if (p == buf)
8187 printk(KERN_INFO DRV_NAME
8188 ": %s is not in hex or decimal form.\n", buf);
8189 else
8190 iwl_debug_level = val;
8191
8192 return strnlen(buf, count);
8193 }
8194
8195 static DRIVER_ATTR(debug_level, S_IWUSR | S_IRUGO,
8196 show_debug_level, store_debug_level);
8197
8198 #endif /* CONFIG_IWLWIFI_DEBUG */
8199
8200 static ssize_t show_rf_kill(struct device *d,
8201 struct device_attribute *attr, char *buf)
8202 {
8203 /*
8204 * 0 - RF kill not enabled
8205 * 1 - SW based RF kill active (sysfs)
8206 * 2 - HW based RF kill active
8207 * 3 - Both HW and SW based RF kill active
8208 */
8209 struct iwl_priv *priv = (struct iwl_priv *)d->driver_data;
8210 int val = (test_bit(STATUS_RF_KILL_SW, &priv->status) ? 0x1 : 0x0) |
8211 (test_bit(STATUS_RF_KILL_HW, &priv->status) ? 0x2 : 0x0);
8212
8213 return sprintf(buf, "%i\n", val);
8214 }
8215
8216 static ssize_t store_rf_kill(struct device *d,
8217 struct device_attribute *attr,
8218 const char *buf, size_t count)
8219 {
8220 struct iwl_priv *priv = (struct iwl_priv *)d->driver_data;
8221
8222 mutex_lock(&priv->mutex);
8223 iwl_radio_kill_sw(priv, buf[0] == '1');
8224 mutex_unlock(&priv->mutex);
8225
8226 return count;
8227 }
8228
8229 static DEVICE_ATTR(rf_kill, S_IWUSR | S_IRUGO, show_rf_kill, store_rf_kill);
8230
8231 static ssize_t show_temperature(struct device *d,
8232 struct device_attribute *attr, char *buf)
8233 {
8234 struct iwl_priv *priv = (struct iwl_priv *)d->driver_data;
8235
8236 if (!iwl_is_alive(priv))
8237 return -EAGAIN;
8238
8239 return sprintf(buf, "%d\n", iwl_hw_get_temperature(priv));
8240 }
8241
8242 static DEVICE_ATTR(temperature, S_IRUGO, show_temperature, NULL);
8243
8244 static ssize_t show_rs_window(struct device *d,
8245 struct device_attribute *attr,
8246 char *buf)
8247 {
8248 struct iwl_priv *priv = d->driver_data;
8249 return iwl_fill_rs_info(priv->hw, buf, IWL_AP_ID);
8250 }
8251 static DEVICE_ATTR(rs_window, S_IRUGO, show_rs_window, NULL);
8252
8253 static ssize_t show_tx_power(struct device *d,
8254 struct device_attribute *attr, char *buf)
8255 {
8256 struct iwl_priv *priv = (struct iwl_priv *)d->driver_data;
8257 return sprintf(buf, "%d\n", priv->user_txpower_limit);
8258 }
8259
8260 static ssize_t store_tx_power(struct device *d,
8261 struct device_attribute *attr,
8262 const char *buf, size_t count)
8263 {
8264 struct iwl_priv *priv = (struct iwl_priv *)d->driver_data;
8265 char *p = (char *)buf;
8266 u32 val;
8267
8268 val = simple_strtoul(p, &p, 10);
8269 if (p == buf)
8270 printk(KERN_INFO DRV_NAME
8271 ": %s is not in decimal form.\n", buf);
8272 else
8273 iwl_hw_reg_set_txpower(priv, val);
8274
8275 return count;
8276 }
8277
8278 static DEVICE_ATTR(tx_power, S_IWUSR | S_IRUGO, show_tx_power, store_tx_power);
8279
8280 static ssize_t show_flags(struct device *d,
8281 struct device_attribute *attr, char *buf)
8282 {
8283 struct iwl_priv *priv = (struct iwl_priv *)d->driver_data;
8284
8285 return sprintf(buf, "0x%04X\n", priv->active_rxon.flags);
8286 }
8287
8288 static ssize_t store_flags(struct device *d,
8289 struct device_attribute *attr,
8290 const char *buf, size_t count)
8291 {
8292 struct iwl_priv *priv = (struct iwl_priv *)d->driver_data;
8293 u32 flags = simple_strtoul(buf, NULL, 0);
8294
8295 mutex_lock(&priv->mutex);
8296 if (le32_to_cpu(priv->staging_rxon.flags) != flags) {
8297 /* Cancel any currently running scans... */
8298 if (iwl_scan_cancel_timeout(priv, 100))
8299 IWL_WARNING("Could not cancel scan.\n");
8300 else {
8301 IWL_DEBUG_INFO("Committing rxon.flags = 0x%04X\n",
8302 flags);
8303 priv->staging_rxon.flags = cpu_to_le32(flags);
8304 iwl_commit_rxon(priv);
8305 }
8306 }
8307 mutex_unlock(&priv->mutex);
8308
8309 return count;
8310 }
8311
8312 static DEVICE_ATTR(flags, S_IWUSR | S_IRUGO, show_flags, store_flags);
8313
8314 static ssize_t show_filter_flags(struct device *d,
8315 struct device_attribute *attr, char *buf)
8316 {
8317 struct iwl_priv *priv = (struct iwl_priv *)d->driver_data;
8318
8319 return sprintf(buf, "0x%04X\n",
8320 le32_to_cpu(priv->active_rxon.filter_flags));
8321 }
8322
8323 static ssize_t store_filter_flags(struct device *d,
8324 struct device_attribute *attr,
8325 const char *buf, size_t count)
8326 {
8327 struct iwl_priv *priv = (struct iwl_priv *)d->driver_data;
8328 u32 filter_flags = simple_strtoul(buf, NULL, 0);
8329
8330 mutex_lock(&priv->mutex);
8331 if (le32_to_cpu(priv->staging_rxon.filter_flags) != filter_flags) {
8332 /* Cancel any currently running scans... */
8333 if (iwl_scan_cancel_timeout(priv, 100))
8334 IWL_WARNING("Could not cancel scan.\n");
8335 else {
8336 IWL_DEBUG_INFO("Committing rxon.filter_flags = "
8337 "0x%04X\n", filter_flags);
8338 priv->staging_rxon.filter_flags =
8339 cpu_to_le32(filter_flags);
8340 iwl_commit_rxon(priv);
8341 }
8342 }
8343 mutex_unlock(&priv->mutex);
8344
8345 return count;
8346 }
8347
8348 static DEVICE_ATTR(filter_flags, S_IWUSR | S_IRUGO, show_filter_flags,
8349 store_filter_flags);
8350
8351 static ssize_t show_tune(struct device *d,
8352 struct device_attribute *attr, char *buf)
8353 {
8354 struct iwl_priv *priv = (struct iwl_priv *)d->driver_data;
8355
8356 return sprintf(buf, "0x%04X\n",
8357 (priv->phymode << 8) |
8358 le16_to_cpu(priv->active_rxon.channel));
8359 }
8360
8361 static void iwl_set_flags_for_phymode(struct iwl_priv *priv, u8 phymode);
8362
8363 static ssize_t store_tune(struct device *d,
8364 struct device_attribute *attr,
8365 const char *buf, size_t count)
8366 {
8367 struct iwl_priv *priv = (struct iwl_priv *)d->driver_data;
8368 char *p = (char *)buf;
8369 u16 tune = simple_strtoul(p, &p, 0);
8370 u8 phymode = (tune >> 8) & 0xff;
8371 u16 channel = tune & 0xff;
8372
8373 IWL_DEBUG_INFO("Tune request to:%d channel:%d\n", phymode, channel);
8374
8375 mutex_lock(&priv->mutex);
8376 if ((le16_to_cpu(priv->staging_rxon.channel) != channel) ||
8377 (priv->phymode != phymode)) {
8378 const struct iwl_channel_info *ch_info;
8379
8380 ch_info = iwl_get_channel_info(priv, phymode, channel);
8381 if (!ch_info) {
8382 IWL_WARNING("Requested invalid phymode/channel "
8383 "combination: %d %d\n", phymode, channel);
8384 mutex_unlock(&priv->mutex);
8385 return -EINVAL;
8386 }
8387
8388 /* Cancel any currently running scans... */
8389 if (iwl_scan_cancel_timeout(priv, 100))
8390 IWL_WARNING("Could not cancel scan.\n");
8391 else {
8392 IWL_DEBUG_INFO("Committing phymode and "
8393 "rxon.channel = %d %d\n",
8394 phymode, channel);
8395
8396 iwl_set_rxon_channel(priv, phymode, channel);
8397 iwl_set_flags_for_phymode(priv, phymode);
8398
8399 iwl_set_rate(priv);
8400 iwl_commit_rxon(priv);
8401 }
8402 }
8403 mutex_unlock(&priv->mutex);
8404
8405 return count;
8406 }
8407
8408 static DEVICE_ATTR(tune, S_IWUSR | S_IRUGO, show_tune, store_tune);
8409
8410 #ifdef CONFIG_IWLWIFI_SPECTRUM_MEASUREMENT
8411
8412 static ssize_t show_measurement(struct device *d,
8413 struct device_attribute *attr, char *buf)
8414 {
8415 struct iwl_priv *priv = dev_get_drvdata(d);
8416 struct iwl_spectrum_notification measure_report;
8417 u32 size = sizeof(measure_report), len = 0, ofs = 0;
8418 u8 *data = (u8 *) & measure_report;
8419 unsigned long flags;
8420
8421 spin_lock_irqsave(&priv->lock, flags);
8422 if (!(priv->measurement_status & MEASUREMENT_READY)) {
8423 spin_unlock_irqrestore(&priv->lock, flags);
8424 return 0;
8425 }
8426 memcpy(&measure_report, &priv->measure_report, size);
8427 priv->measurement_status = 0;
8428 spin_unlock_irqrestore(&priv->lock, flags);
8429
8430 while (size && (PAGE_SIZE - len)) {
8431 hex_dump_to_buffer(data + ofs, size, 16, 1, buf + len,
8432 PAGE_SIZE - len, 1);
8433 len = strlen(buf);
8434 if (PAGE_SIZE - len)
8435 buf[len++] = '\n';
8436
8437 ofs += 16;
8438 size -= min(size, 16U);
8439 }
8440
8441 return len;
8442 }
8443
8444 static ssize_t store_measurement(struct device *d,
8445 struct device_attribute *attr,
8446 const char *buf, size_t count)
8447 {
8448 struct iwl_priv *priv = dev_get_drvdata(d);
8449 struct ieee80211_measurement_params params = {
8450 .channel = le16_to_cpu(priv->active_rxon.channel),
8451 .start_time = cpu_to_le64(priv->last_tsf),
8452 .duration = cpu_to_le16(1),
8453 };
8454 u8 type = IWL_MEASURE_BASIC;
8455 u8 buffer[32];
8456 u8 channel;
8457
8458 if (count) {
8459 char *p = buffer;
8460 strncpy(buffer, buf, min(sizeof(buffer), count));
8461 channel = simple_strtoul(p, NULL, 0);
8462 if (channel)
8463 params.channel = channel;
8464
8465 p = buffer;
8466 while (*p && *p != ' ')
8467 p++;
8468 if (*p)
8469 type = simple_strtoul(p + 1, NULL, 0);
8470 }
8471
8472 IWL_DEBUG_INFO("Invoking measurement of type %d on "
8473 "channel %d (for '%s')\n", type, params.channel, buf);
8474 iwl_get_measurement(priv, &params, type);
8475
8476 return count;
8477 }
8478
8479 static DEVICE_ATTR(measurement, S_IRUSR | S_IWUSR,
8480 show_measurement, store_measurement);
8481 #endif /* CONFIG_IWLWIFI_SPECTRUM_MEASUREMENT */
8482
8483 static ssize_t store_retry_rate(struct device *d,
8484 struct device_attribute *attr,
8485 const char *buf, size_t count)
8486 {
8487 struct iwl_priv *priv = dev_get_drvdata(d);
8488
8489 priv->retry_rate = simple_strtoul(buf, NULL, 0);
8490 if (priv->retry_rate <= 0)
8491 priv->retry_rate = 1;
8492
8493 return count;
8494 }
8495
8496 static ssize_t show_retry_rate(struct device *d,
8497 struct device_attribute *attr, char *buf)
8498 {
8499 struct iwl_priv *priv = dev_get_drvdata(d);
8500 return sprintf(buf, "%d", priv->retry_rate);
8501 }
8502
8503 static DEVICE_ATTR(retry_rate, S_IWUSR | S_IRUSR, show_retry_rate,
8504 store_retry_rate);
8505
8506 static ssize_t store_power_level(struct device *d,
8507 struct device_attribute *attr,
8508 const char *buf, size_t count)
8509 {
8510 struct iwl_priv *priv = dev_get_drvdata(d);
8511 int rc;
8512 int mode;
8513
8514 mode = simple_strtoul(buf, NULL, 0);
8515 mutex_lock(&priv->mutex);
8516
8517 if (!iwl_is_ready(priv)) {
8518 rc = -EAGAIN;
8519 goto out;
8520 }
8521
8522 if ((mode < 1) || (mode > IWL_POWER_LIMIT) || (mode == IWL_POWER_AC))
8523 mode = IWL_POWER_AC;
8524 else
8525 mode |= IWL_POWER_ENABLED;
8526
8527 if (mode != priv->power_mode) {
8528 rc = iwl_send_power_mode(priv, IWL_POWER_LEVEL(mode));
8529 if (rc) {
8530 IWL_DEBUG_MAC80211("failed setting power mode.\n");
8531 goto out;
8532 }
8533 priv->power_mode = mode;
8534 }
8535
8536 rc = count;
8537
8538 out:
8539 mutex_unlock(&priv->mutex);
8540 return rc;
8541 }
8542
8543 #define MAX_WX_STRING 80
8544
8545 /* Values are in microsecond */
8546 static const s32 timeout_duration[] = {
8547 350000,
8548 250000,
8549 75000,
8550 37000,
8551 25000,
8552 };
8553 static const s32 period_duration[] = {
8554 400000,
8555 700000,
8556 1000000,
8557 1000000,
8558 1000000
8559 };
8560
8561 static ssize_t show_power_level(struct device *d,
8562 struct device_attribute *attr, char *buf)
8563 {
8564 struct iwl_priv *priv = dev_get_drvdata(d);
8565 int level = IWL_POWER_LEVEL(priv->power_mode);
8566 char *p = buf;
8567
8568 p += sprintf(p, "%d ", level);
8569 switch (level) {
8570 case IWL_POWER_MODE_CAM:
8571 case IWL_POWER_AC:
8572 p += sprintf(p, "(AC)");
8573 break;
8574 case IWL_POWER_BATTERY:
8575 p += sprintf(p, "(BATTERY)");
8576 break;
8577 default:
8578 p += sprintf(p,
8579 "(Timeout %dms, Period %dms)",
8580 timeout_duration[level - 1] / 1000,
8581 period_duration[level - 1] / 1000);
8582 }
8583
8584 if (!(priv->power_mode & IWL_POWER_ENABLED))
8585 p += sprintf(p, " OFF\n");
8586 else
8587 p += sprintf(p, " \n");
8588
8589 return (p - buf + 1);
8590
8591 }
8592
8593 static DEVICE_ATTR(power_level, S_IWUSR | S_IRUSR, show_power_level,
8594 store_power_level);
8595
8596 static ssize_t show_channels(struct device *d,
8597 struct device_attribute *attr, char *buf)
8598 {
8599 struct iwl_priv *priv = dev_get_drvdata(d);
8600 int len = 0, i;
8601 struct ieee80211_channel *channels = NULL;
8602 const struct ieee80211_hw_mode *hw_mode = NULL;
8603 int count = 0;
8604
8605 if (!iwl_is_ready(priv))
8606 return -EAGAIN;
8607
8608 hw_mode = iwl_get_hw_mode(priv, MODE_IEEE80211G);
8609 if (!hw_mode)
8610 hw_mode = iwl_get_hw_mode(priv, MODE_IEEE80211B);
8611 if (hw_mode) {
8612 channels = hw_mode->channels;
8613 count = hw_mode->num_channels;
8614 }
8615
8616 len +=
8617 sprintf(&buf[len],
8618 "Displaying %d channels in 2.4GHz band "
8619 "(802.11bg):\n", count);
8620
8621 for (i = 0; i < count; i++)
8622 len += sprintf(&buf[len], "%d: %ddBm: BSS%s%s, %s.\n",
8623 channels[i].chan,
8624 channels[i].power_level,
8625 channels[i].
8626 flag & IEEE80211_CHAN_W_RADAR_DETECT ?
8627 " (IEEE 802.11h required)" : "",
8628 (!(channels[i].flag & IEEE80211_CHAN_W_IBSS)
8629 || (channels[i].
8630 flag &
8631 IEEE80211_CHAN_W_RADAR_DETECT)) ? "" :
8632 ", IBSS",
8633 channels[i].
8634 flag & IEEE80211_CHAN_W_ACTIVE_SCAN ?
8635 "active/passive" : "passive only");
8636
8637 hw_mode = iwl_get_hw_mode(priv, MODE_IEEE80211A);
8638 if (hw_mode) {
8639 channels = hw_mode->channels;
8640 count = hw_mode->num_channels;
8641 } else {
8642 channels = NULL;
8643 count = 0;
8644 }
8645
8646 len += sprintf(&buf[len], "Displaying %d channels in 5.2GHz band "
8647 "(802.11a):\n", count);
8648
8649 for (i = 0; i < count; i++)
8650 len += sprintf(&buf[len], "%d: %ddBm: BSS%s%s, %s.\n",
8651 channels[i].chan,
8652 channels[i].power_level,
8653 channels[i].
8654 flag & IEEE80211_CHAN_W_RADAR_DETECT ?
8655 " (IEEE 802.11h required)" : "",
8656 (!(channels[i].flag & IEEE80211_CHAN_W_IBSS)
8657 || (channels[i].
8658 flag &
8659 IEEE80211_CHAN_W_RADAR_DETECT)) ? "" :
8660 ", IBSS",
8661 channels[i].
8662 flag & IEEE80211_CHAN_W_ACTIVE_SCAN ?
8663 "active/passive" : "passive only");
8664
8665 return len;
8666 }
8667
8668 static DEVICE_ATTR(channels, S_IRUSR, show_channels, NULL);
8669
8670 static ssize_t show_statistics(struct device *d,
8671 struct device_attribute *attr, char *buf)
8672 {
8673 struct iwl_priv *priv = dev_get_drvdata(d);
8674 u32 size = sizeof(struct iwl_notif_statistics);
8675 u32 len = 0, ofs = 0;
8676 u8 *data = (u8 *) & priv->statistics;
8677 int rc = 0;
8678
8679 if (!iwl_is_alive(priv))
8680 return -EAGAIN;
8681
8682 mutex_lock(&priv->mutex);
8683 rc = iwl_send_statistics_request(priv);
8684 mutex_unlock(&priv->mutex);
8685
8686 if (rc) {
8687 len = sprintf(buf,
8688 "Error sending statistics request: 0x%08X\n", rc);
8689 return len;
8690 }
8691
8692 while (size && (PAGE_SIZE - len)) {
8693 hex_dump_to_buffer(data + ofs, size, 16, 1, buf + len,
8694 PAGE_SIZE - len, 1);
8695 len = strlen(buf);
8696 if (PAGE_SIZE - len)
8697 buf[len++] = '\n';
8698
8699 ofs += 16;
8700 size -= min(size, 16U);
8701 }
8702
8703 return len;
8704 }
8705
8706 static DEVICE_ATTR(statistics, S_IRUGO, show_statistics, NULL);
8707
8708 static ssize_t show_antenna(struct device *d,
8709 struct device_attribute *attr, char *buf)
8710 {
8711 struct iwl_priv *priv = dev_get_drvdata(d);
8712
8713 if (!iwl_is_alive(priv))
8714 return -EAGAIN;
8715
8716 return sprintf(buf, "%d\n", priv->antenna);
8717 }
8718
8719 static ssize_t store_antenna(struct device *d,
8720 struct device_attribute *attr,
8721 const char *buf, size_t count)
8722 {
8723 int ant;
8724 struct iwl_priv *priv = dev_get_drvdata(d);
8725
8726 if (count == 0)
8727 return 0;
8728
8729 if (sscanf(buf, "%1i", &ant) != 1) {
8730 IWL_DEBUG_INFO("not in hex or decimal form.\n");
8731 return count;
8732 }
8733
8734 if ((ant >= 0) && (ant <= 2)) {
8735 IWL_DEBUG_INFO("Setting antenna select to %d.\n", ant);
8736 priv->antenna = (enum iwl_antenna)ant;
8737 } else
8738 IWL_DEBUG_INFO("Bad antenna select value %d.\n", ant);
8739
8740
8741 return count;
8742 }
8743
8744 static DEVICE_ATTR(antenna, S_IWUSR | S_IRUGO, show_antenna, store_antenna);
8745
8746 static ssize_t show_status(struct device *d,
8747 struct device_attribute *attr, char *buf)
8748 {
8749 struct iwl_priv *priv = (struct iwl_priv *)d->driver_data;
8750 if (!iwl_is_alive(priv))
8751 return -EAGAIN;
8752 return sprintf(buf, "0x%08x\n", (int)priv->status);
8753 }
8754
8755 static DEVICE_ATTR(status, S_IRUGO, show_status, NULL);
8756
8757 static ssize_t dump_error_log(struct device *d,
8758 struct device_attribute *attr,
8759 const char *buf, size_t count)
8760 {
8761 char *p = (char *)buf;
8762
8763 if (p[0] == '1')
8764 iwl_dump_nic_error_log((struct iwl_priv *)d->driver_data);
8765
8766 return strnlen(buf, count);
8767 }
8768
8769 static DEVICE_ATTR(dump_errors, S_IWUSR, NULL, dump_error_log);
8770
8771 static ssize_t dump_event_log(struct device *d,
8772 struct device_attribute *attr,
8773 const char *buf, size_t count)
8774 {
8775 char *p = (char *)buf;
8776
8777 if (p[0] == '1')
8778 iwl_dump_nic_event_log((struct iwl_priv *)d->driver_data);
8779
8780 return strnlen(buf, count);
8781 }
8782
8783 static DEVICE_ATTR(dump_events, S_IWUSR, NULL, dump_event_log);
8784
8785 /*****************************************************************************
8786 *
8787 * driver setup and teardown
8788 *
8789 *****************************************************************************/
8790
8791 static void iwl_setup_deferred_work(struct iwl_priv *priv)
8792 {
8793 priv->workqueue = create_workqueue(DRV_NAME);
8794
8795 init_waitqueue_head(&priv->wait_command_queue);
8796
8797 INIT_WORK(&priv->up, iwl_bg_up);
8798 INIT_WORK(&priv->restart, iwl_bg_restart);
8799 INIT_WORK(&priv->rx_replenish, iwl_bg_rx_replenish);
8800 INIT_WORK(&priv->scan_completed, iwl_bg_scan_completed);
8801 INIT_WORK(&priv->request_scan, iwl_bg_request_scan);
8802 INIT_WORK(&priv->abort_scan, iwl_bg_abort_scan);
8803 INIT_WORK(&priv->rf_kill, iwl_bg_rf_kill);
8804 INIT_WORK(&priv->beacon_update, iwl_bg_beacon_update);
8805 INIT_DELAYED_WORK(&priv->post_associate, iwl_bg_post_associate);
8806 INIT_DELAYED_WORK(&priv->init_alive_start, iwl_bg_init_alive_start);
8807 INIT_DELAYED_WORK(&priv->alive_start, iwl_bg_alive_start);
8808 INIT_DELAYED_WORK(&priv->scan_check, iwl_bg_scan_check);
8809
8810 iwl_hw_setup_deferred_work(priv);
8811
8812 tasklet_init(&priv->irq_tasklet, (void (*)(unsigned long))
8813 iwl_irq_tasklet, (unsigned long)priv);
8814 }
8815
8816 static void iwl_cancel_deferred_work(struct iwl_priv *priv)
8817 {
8818 iwl_hw_cancel_deferred_work(priv);
8819
8820 cancel_delayed_work(&priv->scan_check);
8821 cancel_delayed_work(&priv->alive_start);
8822 cancel_delayed_work(&priv->post_associate);
8823 cancel_work_sync(&priv->beacon_update);
8824 }
8825
8826 static struct attribute *iwl_sysfs_entries[] = {
8827 &dev_attr_antenna.attr,
8828 &dev_attr_channels.attr,
8829 &dev_attr_dump_errors.attr,
8830 &dev_attr_dump_events.attr,
8831 &dev_attr_flags.attr,
8832 &dev_attr_filter_flags.attr,
8833 #ifdef CONFIG_IWLWIFI_SPECTRUM_MEASUREMENT
8834 &dev_attr_measurement.attr,
8835 #endif
8836 &dev_attr_power_level.attr,
8837 &dev_attr_retry_rate.attr,
8838 &dev_attr_rf_kill.attr,
8839 &dev_attr_rs_window.attr,
8840 &dev_attr_statistics.attr,
8841 &dev_attr_status.attr,
8842 &dev_attr_temperature.attr,
8843 &dev_attr_tune.attr,
8844 &dev_attr_tx_power.attr,
8845
8846 NULL
8847 };
8848
8849 static struct attribute_group iwl_attribute_group = {
8850 .name = NULL, /* put in device directory */
8851 .attrs = iwl_sysfs_entries,
8852 };
8853
8854 static struct ieee80211_ops iwl_hw_ops = {
8855 .tx = iwl_mac_tx,
8856 .start = iwl_mac_start,
8857 .stop = iwl_mac_stop,
8858 .add_interface = iwl_mac_add_interface,
8859 .remove_interface = iwl_mac_remove_interface,
8860 .config = iwl_mac_config,
8861 .config_interface = iwl_mac_config_interface,
8862 .configure_filter = iwl_configure_filter,
8863 .set_key = iwl_mac_set_key,
8864 .get_stats = iwl_mac_get_stats,
8865 .get_tx_stats = iwl_mac_get_tx_stats,
8866 .conf_tx = iwl_mac_conf_tx,
8867 .get_tsf = iwl_mac_get_tsf,
8868 .reset_tsf = iwl_mac_reset_tsf,
8869 .beacon_update = iwl_mac_beacon_update,
8870 #ifdef CONFIG_IWLWIFI_HT
8871 .conf_ht = iwl_mac_conf_ht,
8872 .get_ht_capab = iwl_mac_get_ht_capab,
8873 #ifdef CONFIG_IWLWIFI_HT_AGG
8874 .ht_tx_agg_start = iwl_mac_ht_tx_agg_start,
8875 .ht_tx_agg_stop = iwl_mac_ht_tx_agg_stop,
8876 .ht_rx_agg_start = iwl_mac_ht_rx_agg_start,
8877 .ht_rx_agg_stop = iwl_mac_ht_rx_agg_stop,
8878 #endif /* CONFIG_IWLWIFI_HT_AGG */
8879 #endif /* CONFIG_IWLWIFI_HT */
8880 .hw_scan = iwl_mac_hw_scan
8881 };
8882
8883 static int iwl_pci_probe(struct pci_dev *pdev, const struct pci_device_id *ent)
8884 {
8885 int err = 0;
8886 struct iwl_priv *priv;
8887 struct ieee80211_hw *hw;
8888 int i;
8889
8890 if (iwl_param_disable_hw_scan) {
8891 IWL_DEBUG_INFO("Disabling hw_scan\n");
8892 iwl_hw_ops.hw_scan = NULL;
8893 }
8894
8895 if ((iwl_param_queues_num > IWL_MAX_NUM_QUEUES) ||
8896 (iwl_param_queues_num < IWL_MIN_NUM_QUEUES)) {
8897 IWL_ERROR("invalid queues_num, should be between %d and %d\n",
8898 IWL_MIN_NUM_QUEUES, IWL_MAX_NUM_QUEUES);
8899 err = -EINVAL;
8900 goto out;
8901 }
8902
8903 /* mac80211 allocates memory for this device instance, including
8904 * space for this driver's private structure */
8905 hw = ieee80211_alloc_hw(sizeof(struct iwl_priv), &iwl_hw_ops);
8906 if (hw == NULL) {
8907 IWL_ERROR("Can not allocate network device\n");
8908 err = -ENOMEM;
8909 goto out;
8910 }
8911 SET_IEEE80211_DEV(hw, &pdev->dev);
8912
8913 IWL_DEBUG_INFO("*** LOAD DRIVER ***\n");
8914 priv = hw->priv;
8915 priv->hw = hw;
8916
8917 priv->pci_dev = pdev;
8918 priv->antenna = (enum iwl_antenna)iwl_param_antenna;
8919 #ifdef CONFIG_IWLWIFI_DEBUG
8920 iwl_debug_level = iwl_param_debug;
8921 atomic_set(&priv->restrict_refcnt, 0);
8922 #endif
8923 priv->retry_rate = 1;
8924
8925 priv->ibss_beacon = NULL;
8926
8927 /* Tell mac80211 and its clients (e.g. Wireless Extensions)
8928 * the range of signal quality values that we'll provide.
8929 * Negative values for level/noise indicate that we'll provide dBm.
8930 * For WE, at least, non-0 values here *enable* display of values
8931 * in app (iwconfig). */
8932 hw->max_rssi = -20; /* signal level, negative indicates dBm */
8933 hw->max_noise = -20; /* noise level, negative indicates dBm */
8934 hw->max_signal = 100; /* link quality indication (%) */
8935
8936 /* Tell mac80211 our Tx characteristics */
8937 hw->flags = IEEE80211_HW_HOST_GEN_BEACON_TEMPLATE;
8938
8939 hw->queues = 4;
8940 #ifdef CONFIG_IWLWIFI_HT
8941 #ifdef CONFIG_IWLWIFI_HT_AGG
8942 hw->queues = 16;
8943 #endif /* CONFIG_IWLWIFI_HT_AGG */
8944 #endif /* CONFIG_IWLWIFI_HT */
8945
8946 spin_lock_init(&priv->lock);
8947 spin_lock_init(&priv->power_data.lock);
8948 spin_lock_init(&priv->sta_lock);
8949 spin_lock_init(&priv->hcmd_lock);
8950 spin_lock_init(&priv->lq_mngr.lock);
8951
8952 for (i = 0; i < IWL_IBSS_MAC_HASH_SIZE; i++)
8953 INIT_LIST_HEAD(&priv->ibss_mac_hash[i]);
8954
8955 INIT_LIST_HEAD(&priv->free_frames);
8956
8957 mutex_init(&priv->mutex);
8958 if (pci_enable_device(pdev)) {
8959 err = -ENODEV;
8960 goto out_ieee80211_free_hw;
8961 }
8962
8963 pci_set_master(pdev);
8964
8965 iwl_clear_stations_table(priv);
8966
8967 priv->data_retry_limit = -1;
8968 priv->ieee_channels = NULL;
8969 priv->ieee_rates = NULL;
8970 priv->phymode = -1;
8971
8972 err = pci_set_dma_mask(pdev, DMA_32BIT_MASK);
8973 if (!err)
8974 err = pci_set_consistent_dma_mask(pdev, DMA_32BIT_MASK);
8975 if (err) {
8976 printk(KERN_WARNING DRV_NAME ": No suitable DMA available.\n");
8977 goto out_pci_disable_device;
8978 }
8979
8980 pci_set_drvdata(pdev, priv);
8981 err = pci_request_regions(pdev, DRV_NAME);
8982 if (err)
8983 goto out_pci_disable_device;
8984 /* We disable the RETRY_TIMEOUT register (0x41) to keep
8985 * PCI Tx retries from interfering with C3 CPU state */
8986 pci_write_config_byte(pdev, 0x41, 0x00);
8987 priv->hw_base = pci_iomap(pdev, 0, 0);
8988 if (!priv->hw_base) {
8989 err = -ENODEV;
8990 goto out_pci_release_regions;
8991 }
8992
8993 IWL_DEBUG_INFO("pci_resource_len = 0x%08llx\n",
8994 (unsigned long long) pci_resource_len(pdev, 0));
8995 IWL_DEBUG_INFO("pci_resource_base = %p\n", priv->hw_base);
8996
8997 /* Initialize module parameter values here */
8998
8999 if (iwl_param_disable) {
9000 set_bit(STATUS_RF_KILL_SW, &priv->status);
9001 IWL_DEBUG_INFO("Radio disabled.\n");
9002 }
9003
9004 priv->iw_mode = IEEE80211_IF_TYPE_STA;
9005
9006 priv->ps_mode = 0;
9007 priv->use_ant_b_for_management_frame = 1; /* start with ant B */
9008 priv->is_ht_enabled = 1;
9009 priv->channel_width = IWL_CHANNEL_WIDTH_40MHZ;
9010 priv->valid_antenna = 0x7; /* assume all 3 connected */
9011 priv->ps_mode = IWL_MIMO_PS_NONE;
9012 priv->cck_power_index_compensation = iwl_read32(
9013 priv, CSR_HW_REV_WA_REG);
9014
9015 iwl4965_set_rxon_chain(priv);
9016
9017 printk(KERN_INFO DRV_NAME
9018 ": Detected Intel Wireless WiFi Link 4965AGN\n");
9019
9020 /* Device-specific setup */
9021 if (iwl_hw_set_hw_setting(priv)) {
9022 IWL_ERROR("failed to set hw settings\n");
9023 mutex_unlock(&priv->mutex);
9024 goto out_iounmap;
9025 }
9026
9027 #ifdef CONFIG_IWLWIFI_QOS
9028 if (iwl_param_qos_enable)
9029 priv->qos_data.qos_enable = 1;
9030
9031 iwl_reset_qos(priv);
9032
9033 priv->qos_data.qos_active = 0;
9034 priv->qos_data.qos_cap.val = 0;
9035 #endif /* CONFIG_IWLWIFI_QOS */
9036
9037 iwl_set_rxon_channel(priv, MODE_IEEE80211G, 6);
9038 iwl_setup_deferred_work(priv);
9039 iwl_setup_rx_handlers(priv);
9040
9041 priv->rates_mask = IWL_RATES_MASK;
9042 /* If power management is turned on, default to AC mode */
9043 priv->power_mode = IWL_POWER_AC;
9044 priv->user_txpower_limit = IWL_DEFAULT_TX_POWER;
9045
9046 pci_enable_msi(pdev);
9047
9048 err = request_irq(pdev->irq, iwl_isr, IRQF_SHARED, DRV_NAME, priv);
9049 if (err) {
9050 IWL_ERROR("Error allocating IRQ %d\n", pdev->irq);
9051 goto out_disable_msi;
9052 }
9053
9054 mutex_lock(&priv->mutex);
9055
9056 err = sysfs_create_group(&pdev->dev.kobj, &iwl_attribute_group);
9057 if (err) {
9058 IWL_ERROR("failed to create sysfs device attributes\n");
9059 mutex_unlock(&priv->mutex);
9060 goto out_release_irq;
9061 }
9062
9063 /* fetch ucode file from disk, alloc and copy to bus-master buffers ...
9064 * ucode filename and max sizes are card-specific. */
9065 err = iwl_read_ucode(priv);
9066 if (err) {
9067 IWL_ERROR("Could not read microcode: %d\n", err);
9068 mutex_unlock(&priv->mutex);
9069 goto out_pci_alloc;
9070 }
9071
9072 mutex_unlock(&priv->mutex);
9073
9074 IWL_DEBUG_INFO("Queing UP work.\n");
9075
9076 queue_work(priv->workqueue, &priv->up);
9077
9078 return 0;
9079
9080 out_pci_alloc:
9081 iwl_dealloc_ucode_pci(priv);
9082
9083 sysfs_remove_group(&pdev->dev.kobj, &iwl_attribute_group);
9084
9085 out_release_irq:
9086 free_irq(pdev->irq, priv);
9087
9088 out_disable_msi:
9089 pci_disable_msi(pdev);
9090 destroy_workqueue(priv->workqueue);
9091 priv->workqueue = NULL;
9092 iwl_unset_hw_setting(priv);
9093
9094 out_iounmap:
9095 pci_iounmap(pdev, priv->hw_base);
9096 out_pci_release_regions:
9097 pci_release_regions(pdev);
9098 out_pci_disable_device:
9099 pci_disable_device(pdev);
9100 pci_set_drvdata(pdev, NULL);
9101 out_ieee80211_free_hw:
9102 ieee80211_free_hw(priv->hw);
9103 out:
9104 return err;
9105 }
9106
9107 static void iwl_pci_remove(struct pci_dev *pdev)
9108 {
9109 struct iwl_priv *priv = pci_get_drvdata(pdev);
9110 struct list_head *p, *q;
9111 int i;
9112
9113 if (!priv)
9114 return;
9115
9116 IWL_DEBUG_INFO("*** UNLOAD DRIVER ***\n");
9117
9118 mutex_lock(&priv->mutex);
9119 set_bit(STATUS_EXIT_PENDING, &priv->status);
9120 __iwl_down(priv);
9121 mutex_unlock(&priv->mutex);
9122
9123 /* Free MAC hash list for ADHOC */
9124 for (i = 0; i < IWL_IBSS_MAC_HASH_SIZE; i++) {
9125 list_for_each_safe(p, q, &priv->ibss_mac_hash[i]) {
9126 list_del(p);
9127 kfree(list_entry(p, struct iwl_ibss_seq, list));
9128 }
9129 }
9130
9131 sysfs_remove_group(&pdev->dev.kobj, &iwl_attribute_group);
9132
9133 iwl_dealloc_ucode_pci(priv);
9134
9135 if (priv->rxq.bd)
9136 iwl_rx_queue_free(priv, &priv->rxq);
9137 iwl_hw_txq_ctx_free(priv);
9138
9139 iwl_unset_hw_setting(priv);
9140 iwl_clear_stations_table(priv);
9141
9142 if (priv->mac80211_registered) {
9143 ieee80211_unregister_hw(priv->hw);
9144 iwl_rate_control_unregister(priv->hw);
9145 }
9146
9147 /* ieee80211_unregister_hw calls iwl_mac_stop, which flushes
9148 * priv->workqueue... so we can't take down the workqueue
9149 * until now... */
9150 destroy_workqueue(priv->workqueue);
9151 priv->workqueue = NULL;
9152
9153 free_irq(pdev->irq, priv);
9154 pci_disable_msi(pdev);
9155 pci_iounmap(pdev, priv->hw_base);
9156 pci_release_regions(pdev);
9157 pci_disable_device(pdev);
9158 pci_set_drvdata(pdev, NULL);
9159
9160 kfree(priv->channel_info);
9161
9162 kfree(priv->ieee_channels);
9163 kfree(priv->ieee_rates);
9164
9165 if (priv->ibss_beacon)
9166 dev_kfree_skb(priv->ibss_beacon);
9167
9168 ieee80211_free_hw(priv->hw);
9169 }
9170
9171 #ifdef CONFIG_PM
9172
9173 static int iwl_pci_suspend(struct pci_dev *pdev, pm_message_t state)
9174 {
9175 struct iwl_priv *priv = pci_get_drvdata(pdev);
9176
9177 mutex_lock(&priv->mutex);
9178
9179 set_bit(STATUS_IN_SUSPEND, &priv->status);
9180
9181 /* Take down the device; powers it off, etc. */
9182 __iwl_down(priv);
9183
9184 if (priv->mac80211_registered)
9185 ieee80211_stop_queues(priv->hw);
9186
9187 pci_save_state(pdev);
9188 pci_disable_device(pdev);
9189 pci_set_power_state(pdev, PCI_D3hot);
9190
9191 mutex_unlock(&priv->mutex);
9192
9193 return 0;
9194 }
9195
9196 static void iwl_resume(struct iwl_priv *priv)
9197 {
9198 unsigned long flags;
9199
9200 /* The following it a temporary work around due to the
9201 * suspend / resume not fully initializing the NIC correctly.
9202 * Without all of the following, resume will not attempt to take
9203 * down the NIC (it shouldn't really need to) and will just try
9204 * and bring the NIC back up. However that fails during the
9205 * ucode verification process. This then causes iwl_down to be
9206 * called *after* iwl_hw_nic_init() has succeeded -- which
9207 * then lets the next init sequence succeed. So, we've
9208 * replicated all of that NIC init code here... */
9209
9210 iwl_write32(priv, CSR_INT, 0xFFFFFFFF);
9211
9212 iwl_hw_nic_init(priv);
9213
9214 iwl_write32(priv, CSR_UCODE_DRV_GP1_CLR, CSR_UCODE_SW_BIT_RFKILL);
9215 iwl_write32(priv, CSR_UCODE_DRV_GP1_CLR,
9216 CSR_UCODE_DRV_GP1_BIT_CMD_BLOCKED);
9217 iwl_write32(priv, CSR_INT, 0xFFFFFFFF);
9218 iwl_write32(priv, CSR_UCODE_DRV_GP1_CLR, CSR_UCODE_SW_BIT_RFKILL);
9219 iwl_write32(priv, CSR_UCODE_DRV_GP1_CLR, CSR_UCODE_SW_BIT_RFKILL);
9220
9221 /* tell the device to stop sending interrupts */
9222 iwl_disable_interrupts(priv);
9223
9224 spin_lock_irqsave(&priv->lock, flags);
9225 iwl_clear_bit(priv, CSR_GP_CNTRL, CSR_GP_CNTRL_REG_FLAG_MAC_ACCESS_REQ);
9226
9227 if (!iwl_grab_restricted_access(priv)) {
9228 iwl_write_restricted_reg(priv, APMG_CLK_DIS_REG,
9229 APMG_CLK_VAL_DMA_CLK_RQT);
9230 iwl_release_restricted_access(priv);
9231 }
9232 spin_unlock_irqrestore(&priv->lock, flags);
9233
9234 udelay(5);
9235
9236 iwl_hw_nic_reset(priv);
9237
9238 /* Bring the device back up */
9239 clear_bit(STATUS_IN_SUSPEND, &priv->status);
9240 queue_work(priv->workqueue, &priv->up);
9241 }
9242
9243 static int iwl_pci_resume(struct pci_dev *pdev)
9244 {
9245 struct iwl_priv *priv = pci_get_drvdata(pdev);
9246 int err;
9247
9248 printk(KERN_INFO "Coming out of suspend...\n");
9249
9250 mutex_lock(&priv->mutex);
9251
9252 pci_set_power_state(pdev, PCI_D0);
9253 err = pci_enable_device(pdev);
9254 pci_restore_state(pdev);
9255
9256 /*
9257 * Suspend/Resume resets the PCI configuration space, so we have to
9258 * re-disable the RETRY_TIMEOUT register (0x41) to keep PCI Tx retries
9259 * from interfering with C3 CPU state. pci_restore_state won't help
9260 * here since it only restores the first 64 bytes pci config header.
9261 */
9262 pci_write_config_byte(pdev, 0x41, 0x00);
9263
9264 iwl_resume(priv);
9265 mutex_unlock(&priv->mutex);
9266
9267 return 0;
9268 }
9269
9270 #endif /* CONFIG_PM */
9271
9272 /*****************************************************************************
9273 *
9274 * driver and module entry point
9275 *
9276 *****************************************************************************/
9277
9278 static struct pci_driver iwl_driver = {
9279 .name = DRV_NAME,
9280 .id_table = iwl_hw_card_ids,
9281 .probe = iwl_pci_probe,
9282 .remove = __devexit_p(iwl_pci_remove),
9283 #ifdef CONFIG_PM
9284 .suspend = iwl_pci_suspend,
9285 .resume = iwl_pci_resume,
9286 #endif
9287 };
9288
9289 static int __init iwl_init(void)
9290 {
9291
9292 int ret;
9293 printk(KERN_INFO DRV_NAME ": " DRV_DESCRIPTION ", " DRV_VERSION "\n");
9294 printk(KERN_INFO DRV_NAME ": " DRV_COPYRIGHT "\n");
9295 ret = pci_register_driver(&iwl_driver);
9296 if (ret) {
9297 IWL_ERROR("Unable to initialize PCI module\n");
9298 return ret;
9299 }
9300 #ifdef CONFIG_IWLWIFI_DEBUG
9301 ret = driver_create_file(&iwl_driver.driver, &driver_attr_debug_level);
9302 if (ret) {
9303 IWL_ERROR("Unable to create driver sysfs file\n");
9304 pci_unregister_driver(&iwl_driver);
9305 return ret;
9306 }
9307 #endif
9308
9309 return ret;
9310 }
9311
9312 static void __exit iwl_exit(void)
9313 {
9314 #ifdef CONFIG_IWLWIFI_DEBUG
9315 driver_remove_file(&iwl_driver.driver, &driver_attr_debug_level);
9316 #endif
9317 pci_unregister_driver(&iwl_driver);
9318 }
9319
9320 module_param_named(antenna, iwl_param_antenna, int, 0444);
9321 MODULE_PARM_DESC(antenna, "select antenna (1=Main, 2=Aux, default 0 [both])");
9322 module_param_named(disable, iwl_param_disable, int, 0444);
9323 MODULE_PARM_DESC(disable, "manually disable the radio (default 0 [radio on])");
9324 module_param_named(hwcrypto, iwl_param_hwcrypto, int, 0444);
9325 MODULE_PARM_DESC(hwcrypto,
9326 "using hardware crypto engine (default 0 [software])\n");
9327 module_param_named(debug, iwl_param_debug, int, 0444);
9328 MODULE_PARM_DESC(debug, "debug output mask");
9329 module_param_named(disable_hw_scan, iwl_param_disable_hw_scan, int, 0444);
9330 MODULE_PARM_DESC(disable_hw_scan, "disable hardware scanning (default 0)");
9331
9332 module_param_named(queues_num, iwl_param_queues_num, int, 0444);
9333 MODULE_PARM_DESC(queues_num, "number of hw queues.");
9334
9335 /* QoS */
9336 module_param_named(qos_enable, iwl_param_qos_enable, int, 0444);
9337 MODULE_PARM_DESC(qos_enable, "enable all QoS functionality");
9338
9339 module_exit(iwl_exit);
9340 module_init(iwl_init);
Support for the Chinese Samsung S3C2440 based development boards