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Pull bugzilla-9429 into release branch
[pv_ops_mirror.git] / drivers / net / wireless / iwlwifi / iwl4965-base.c
blob9918780f5e866fe8286fb85c970b815c981b4968
1 /******************************************************************************
2 *
3 * Copyright(c) 2003 - 2007 Intel Corporation. All rights reserved.
4 *
5 * Portions of this file are derived from the ipw3945 project, as well
6 * as portions of the ieee80211 subsystem header files.
7 *
8 * This program is free software; you can redistribute it and/or modify it
9 * under the terms of version 2 of the GNU General Public License as
10 * published by the Free Software Foundation.
11 *
12 * This program is distributed in the hope that it will be useful, but WITHOUT
13 * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
14 * FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License for
15 * more details.
16 *
17 * You should have received a copy of the GNU General Public License along with
18 * this program; if not, write to the Free Software Foundation, Inc.,
19 * 51 Franklin Street, Fifth Floor, Boston, MA 02110, USA
20 *
21 * The full GNU General Public License is included in this distribution in the
22 * file called LICENSE.
23 *
24 * Contact Information:
25 * James P. Ketrenos <ipw2100-admin@linux.intel.com>
26 * Intel Corporation, 5200 N.E. Elam Young Parkway, Hillsboro, OR 97124-6497
27 *
28 *****************************************************************************/
29
30 /*
31 * NOTE: This file (iwl-base.c) is used to build to multiple hardware targets
32 * by defining IWL to either 3945 or 4965. The Makefile used when building
33 * the base targets will create base-3945.o and base-4965.o
34 *
35 * The eventual goal is to move as many of the #if IWL / #endif blocks out of
36 * this file and into the hardware specific implementation files (iwl-XXXX.c)
37 * and leave only the common (non #ifdef sprinkled) code in this file
38 */
39
40 #include <linux/kernel.h>
41 #include <linux/module.h>
42 #include <linux/version.h>
43 #include <linux/init.h>
44 #include <linux/pci.h>
45 #include <linux/dma-mapping.h>
46 #include <linux/delay.h>
47 #include <linux/skbuff.h>
48 #include <linux/netdevice.h>
49 #include <linux/wireless.h>
50 #include <linux/firmware.h>
51 #include <linux/etherdevice.h>
52 #include <linux/if_arp.h>
53
54 #include <net/ieee80211_radiotap.h>
55 #include <net/mac80211.h>
56
57 #include <asm/div64.h>
58
59 #define IWL 4965
60
61 #include "iwlwifi.h"
62 #include "iwl-4965.h"
63 #include "iwl-helpers.h"
64
65 #ifdef CONFIG_IWLWIFI_DEBUG
66 u32 iwl_debug_level;
67 #endif
68
69 /******************************************************************************
70 *
71 * module boiler plate
72 *
73 ******************************************************************************/
74
75 /* module parameters */
76 int iwl_param_disable_hw_scan;
77 int iwl_param_debug;
78 int iwl_param_disable; /* def: enable radio */
79 int iwl_param_antenna; /* def: 0 = both antennas (use diversity) */
80 int iwl_param_hwcrypto; /* def: using software encryption */
81 int iwl_param_qos_enable = 1;
82 int iwl_param_queues_num = IWL_MAX_NUM_QUEUES;
83
84 /*
85 * module name, copyright, version, etc.
86 * NOTE: DRV_NAME is defined in iwlwifi.h for use by iwl-debug.h and printk
87 */
88
89 #define DRV_DESCRIPTION "Intel(R) Wireless WiFi Link 4965AGN driver for Linux"
90
91 #ifdef CONFIG_IWLWIFI_DEBUG
92 #define VD "d"
93 #else
94 #define VD
95 #endif
96
97 #ifdef CONFIG_IWLWIFI_SPECTRUM_MEASUREMENT
98 #define VS "s"
99 #else
100 #define VS
101 #endif
102
103 #define IWLWIFI_VERSION "1.1.17k" VD VS
104 #define DRV_COPYRIGHT "Copyright(c) 2003-2007 Intel Corporation"
105 #define DRV_VERSION IWLWIFI_VERSION
106
107 /* Change firmware file name, using "-" and incrementing number,
108 * *only* when uCode interface or architecture changes so that it
109 * is not compatible with earlier drivers.
110 * This number will also appear in << 8 position of 1st dword of uCode file */
111 #define IWL4965_UCODE_API "-1"
112
113 MODULE_DESCRIPTION(DRV_DESCRIPTION);
114 MODULE_VERSION(DRV_VERSION);
115 MODULE_AUTHOR(DRV_COPYRIGHT);
116 MODULE_LICENSE("GPL");
117
118 __le16 *ieee80211_get_qos_ctrl(struct ieee80211_hdr *hdr)
119 {
120 u16 fc = le16_to_cpu(hdr->frame_control);
121 int hdr_len = ieee80211_get_hdrlen(fc);
122
123 if ((fc & 0x00cc) == (IEEE80211_STYPE_QOS_DATA | IEEE80211_FTYPE_DATA))
124 return (__le16 *) ((u8 *) hdr + hdr_len - QOS_CONTROL_LEN);
125 return NULL;
126 }
127
128 static const struct ieee80211_hw_mode *iwl_get_hw_mode(
129 struct iwl_priv *priv, int mode)
130 {
131 int i;
132
133 for (i = 0; i < 3; i++)
134 if (priv->modes[i].mode == mode)
135 return &priv->modes[i];
136
137 return NULL;
138 }
139
140 static int iwl_is_empty_essid(const char *essid, int essid_len)
141 {
142 /* Single white space is for Linksys APs */
143 if (essid_len == 1 && essid[0] == ' ')
144 return 1;
145
146 /* Otherwise, if the entire essid is 0, we assume it is hidden */
147 while (essid_len) {
148 essid_len--;
149 if (essid[essid_len] != '\0')
150 return 0;
151 }
152
153 return 1;
154 }
155
156 static const char *iwl_escape_essid(const char *essid, u8 essid_len)
157 {
158 static char escaped[IW_ESSID_MAX_SIZE * 2 + 1];
159 const char *s = essid;
160 char *d = escaped;
161
162 if (iwl_is_empty_essid(essid, essid_len)) {
163 memcpy(escaped, "<hidden>", sizeof("<hidden>"));
164 return escaped;
165 }
166
167 essid_len = min(essid_len, (u8) IW_ESSID_MAX_SIZE);
168 while (essid_len--) {
169 if (*s == '\0') {
170 *d++ = '\\';
171 *d++ = '0';
172 s++;
173 } else
174 *d++ = *s++;
175 }
176 *d = '\0';
177 return escaped;
178 }
179
180 static void iwl_print_hex_dump(int level, void *p, u32 len)
181 {
182 #ifdef CONFIG_IWLWIFI_DEBUG
183 if (!(iwl_debug_level & level))
184 return;
185
186 print_hex_dump(KERN_DEBUG, "iwl data: ", DUMP_PREFIX_OFFSET, 16, 1,
187 p, len, 1);
188 #endif
189 }
190
191 /*************** DMA-QUEUE-GENERAL-FUNCTIONS *****
192 * DMA services
193 *
194 * Theory of operation
195 *
196 * A queue is a circular buffers with 'Read' and 'Write' pointers.
197 * 2 empty entries always kept in the buffer to protect from overflow.
198 *
199 * For Tx queue, there are low mark and high mark limits. If, after queuing
200 * the packet for Tx, free space become < low mark, Tx queue stopped. When
201 * reclaiming packets (on 'tx done IRQ), if free space become > high mark,
202 * Tx queue resumed.
203 *
204 * The IWL operates with six queues, one receive queue in the device's
205 * sram, one transmit queue for sending commands to the device firmware,
206 * and four transmit queues for data.
207 ***************************************************/
208
209 static int iwl_queue_space(const struct iwl_queue *q)
210 {
211 int s = q->last_used - q->first_empty;
212
213 if (q->last_used > q->first_empty)
214 s -= q->n_bd;
215
216 if (s <= 0)
217 s += q->n_window;
218 /* keep some reserve to not confuse empty and full situations */
219 s -= 2;
220 if (s < 0)
221 s = 0;
222 return s;
223 }
224
225 /* XXX: n_bd must be power-of-two size */
226 static inline int iwl_queue_inc_wrap(int index, int n_bd)
227 {
228 return ++index & (n_bd - 1);
229 }
230
231 /* XXX: n_bd must be power-of-two size */
232 static inline int iwl_queue_dec_wrap(int index, int n_bd)
233 {
234 return --index & (n_bd - 1);
235 }
236
237 static inline int x2_queue_used(const struct iwl_queue *q, int i)
238 {
239 return q->first_empty > q->last_used ?
240 (i >= q->last_used && i < q->first_empty) :
241 !(i < q->last_used && i >= q->first_empty);
242 }
243
244 static inline u8 get_cmd_index(struct iwl_queue *q, u32 index, int is_huge)
245 {
246 if (is_huge)
247 return q->n_window;
248
249 return index & (q->n_window - 1);
250 }
251
252 static int iwl_queue_init(struct iwl_priv *priv, struct iwl_queue *q,
253 int count, int slots_num, u32 id)
254 {
255 q->n_bd = count;
256 q->n_window = slots_num;
257 q->id = id;
258
259 /* count must be power-of-two size, otherwise iwl_queue_inc_wrap
260 * and iwl_queue_dec_wrap are broken. */
261 BUG_ON(!is_power_of_2(count));
262
263 /* slots_num must be power-of-two size, otherwise
264 * get_cmd_index is broken. */
265 BUG_ON(!is_power_of_2(slots_num));
266
267 q->low_mark = q->n_window / 4;
268 if (q->low_mark < 4)
269 q->low_mark = 4;
270
271 q->high_mark = q->n_window / 8;
272 if (q->high_mark < 2)
273 q->high_mark = 2;
274
275 q->first_empty = q->last_used = 0;
276
277 return 0;
278 }
279
280 static int iwl_tx_queue_alloc(struct iwl_priv *priv,
281 struct iwl_tx_queue *txq, u32 id)
282 {
283 struct pci_dev *dev = priv->pci_dev;
284
285 if (id != IWL_CMD_QUEUE_NUM) {
286 txq->txb = kmalloc(sizeof(txq->txb[0]) *
287 TFD_QUEUE_SIZE_MAX, GFP_KERNEL);
288 if (!txq->txb) {
289 IWL_ERROR("kmalloc for auxilary BD "
290 "structures failed\n");
291 goto error;
292 }
293 } else
294 txq->txb = NULL;
295
296 txq->bd = pci_alloc_consistent(dev,
297 sizeof(txq->bd[0]) * TFD_QUEUE_SIZE_MAX,
298 &txq->q.dma_addr);
299
300 if (!txq->bd) {
301 IWL_ERROR("pci_alloc_consistent(%zd) failed\n",
302 sizeof(txq->bd[0]) * TFD_QUEUE_SIZE_MAX);
303 goto error;
304 }
305 txq->q.id = id;
306
307 return 0;
308
309 error:
310 if (txq->txb) {
311 kfree(txq->txb);
312 txq->txb = NULL;
313 }
314
315 return -ENOMEM;
316 }
317
318 int iwl_tx_queue_init(struct iwl_priv *priv,
319 struct iwl_tx_queue *txq, int slots_num, u32 txq_id)
320 {
321 struct pci_dev *dev = priv->pci_dev;
322 int len;
323 int rc = 0;
324
325 /* alocate command space + one big command for scan since scan
326 * command is very huge the system will not have two scan at the
327 * same time */
328 len = sizeof(struct iwl_cmd) * slots_num;
329 if (txq_id == IWL_CMD_QUEUE_NUM)
330 len += IWL_MAX_SCAN_SIZE;
331 txq->cmd = pci_alloc_consistent(dev, len, &txq->dma_addr_cmd);
332 if (!txq->cmd)
333 return -ENOMEM;
334
335 rc = iwl_tx_queue_alloc(priv, txq, txq_id);
336 if (rc) {
337 pci_free_consistent(dev, len, txq->cmd, txq->dma_addr_cmd);
338
339 return -ENOMEM;
340 }
341 txq->need_update = 0;
342
343 /* TFD_QUEUE_SIZE_MAX must be power-of-two size, otherwise
344 * iwl_queue_inc_wrap and iwl_queue_dec_wrap are broken. */
345 BUILD_BUG_ON(TFD_QUEUE_SIZE_MAX & (TFD_QUEUE_SIZE_MAX - 1));
346 iwl_queue_init(priv, &txq->q, TFD_QUEUE_SIZE_MAX, slots_num, txq_id);
347
348 iwl_hw_tx_queue_init(priv, txq);
349
350 return 0;
351 }
352
353 /**
354 * iwl_tx_queue_free - Deallocate DMA queue.
355 * @txq: Transmit queue to deallocate.
356 *
357 * Empty queue by removing and destroying all BD's.
358 * Free all buffers. txq itself is not freed.
359 *
360 */
361 void iwl_tx_queue_free(struct iwl_priv *priv, struct iwl_tx_queue *txq)
362 {
363 struct iwl_queue *q = &txq->q;
364 struct pci_dev *dev = priv->pci_dev;
365 int len;
366
367 if (q->n_bd == 0)
368 return;
369
370 /* first, empty all BD's */
371 for (; q->first_empty != q->last_used;
372 q->last_used = iwl_queue_inc_wrap(q->last_used, q->n_bd))
373 iwl_hw_txq_free_tfd(priv, txq);
374
375 len = sizeof(struct iwl_cmd) * q->n_window;
376 if (q->id == IWL_CMD_QUEUE_NUM)
377 len += IWL_MAX_SCAN_SIZE;
378
379 pci_free_consistent(dev, len, txq->cmd, txq->dma_addr_cmd);
380
381 /* free buffers belonging to queue itself */
382 if (txq->q.n_bd)
383 pci_free_consistent(dev, sizeof(struct iwl_tfd_frame) *
384 txq->q.n_bd, txq->bd, txq->q.dma_addr);
385
386 if (txq->txb) {
387 kfree(txq->txb);
388 txq->txb = NULL;
389 }
390
391 /* 0 fill whole structure */
392 memset(txq, 0, sizeof(*txq));
393 }
394
395 const u8 BROADCAST_ADDR[ETH_ALEN] = { 0xFF, 0xFF, 0xFF, 0xFF, 0xFF, 0xFF };
396
397 /*************** STATION TABLE MANAGEMENT ****
398 *
399 * NOTE: This needs to be overhauled to better synchronize between
400 * how the iwl-4965.c is using iwl_hw_find_station vs. iwl-3945.c
401 *
402 * mac80211 should also be examined to determine if sta_info is duplicating
403 * the functionality provided here
404 */
405
406 /**************************************************************/
407
408 #if 0 /* temparary disable till we add real remove station */
409 static u8 iwl_remove_station(struct iwl_priv *priv, const u8 *addr, int is_ap)
410 {
411 int index = IWL_INVALID_STATION;
412 int i;
413 unsigned long flags;
414
415 spin_lock_irqsave(&priv->sta_lock, flags);
416
417 if (is_ap)
418 index = IWL_AP_ID;
419 else if (is_broadcast_ether_addr(addr))
420 index = priv->hw_setting.bcast_sta_id;
421 else
422 for (i = IWL_STA_ID; i < priv->hw_setting.max_stations; i++)
423 if (priv->stations[i].used &&
424 !compare_ether_addr(priv->stations[i].sta.sta.addr,
425 addr)) {
426 index = i;
427 break;
428 }
429
430 if (unlikely(index == IWL_INVALID_STATION))
431 goto out;
432
433 if (priv->stations[index].used) {
434 priv->stations[index].used = 0;
435 priv->num_stations--;
436 }
437
438 BUG_ON(priv->num_stations < 0);
439
440 out:
441 spin_unlock_irqrestore(&priv->sta_lock, flags);
442 return 0;
443 }
444 #endif
445
446 static void iwl_clear_stations_table(struct iwl_priv *priv)
447 {
448 unsigned long flags;
449
450 spin_lock_irqsave(&priv->sta_lock, flags);
451
452 priv->num_stations = 0;
453 memset(priv->stations, 0, sizeof(priv->stations));
454
455 spin_unlock_irqrestore(&priv->sta_lock, flags);
456 }
457
458 u8 iwl_add_station(struct iwl_priv *priv, const u8 *addr, int is_ap, u8 flags)
459 {
460 int i;
461 int index = IWL_INVALID_STATION;
462 struct iwl_station_entry *station;
463 unsigned long flags_spin;
464 DECLARE_MAC_BUF(mac);
465
466 spin_lock_irqsave(&priv->sta_lock, flags_spin);
467 if (is_ap)
468 index = IWL_AP_ID;
469 else if (is_broadcast_ether_addr(addr))
470 index = priv->hw_setting.bcast_sta_id;
471 else
472 for (i = IWL_STA_ID; i < priv->hw_setting.max_stations; i++) {
473 if (!compare_ether_addr(priv->stations[i].sta.sta.addr,
474 addr)) {
475 index = i;
476 break;
477 }
478
479 if (!priv->stations[i].used &&
480 index == IWL_INVALID_STATION)
481 index = i;
482 }
483
484
485 /* These twh conditions has the same outcome but keep them separate
486 since they have different meaning */
487 if (unlikely(index == IWL_INVALID_STATION)) {
488 spin_unlock_irqrestore(&priv->sta_lock, flags_spin);
489 return index;
490 }
491
492 if (priv->stations[index].used &&
493 !compare_ether_addr(priv->stations[index].sta.sta.addr, addr)) {
494 spin_unlock_irqrestore(&priv->sta_lock, flags_spin);
495 return index;
496 }
497
498
499 IWL_DEBUG_ASSOC("Add STA ID %d: %s\n", index, print_mac(mac, addr));
500 station = &priv->stations[index];
501 station->used = 1;
502 priv->num_stations++;
503
504 memset(&station->sta, 0, sizeof(struct iwl_addsta_cmd));
505 memcpy(station->sta.sta.addr, addr, ETH_ALEN);
506 station->sta.mode = 0;
507 station->sta.sta.sta_id = index;
508 station->sta.station_flags = 0;
509
510 #ifdef CONFIG_IWLWIFI_HT
511 /* BCAST station and IBSS stations do not work in HT mode */
512 if (index != priv->hw_setting.bcast_sta_id &&
513 priv->iw_mode != IEEE80211_IF_TYPE_IBSS)
514 iwl4965_set_ht_add_station(priv, index);
515 #endif /*CONFIG_IWLWIFI_HT*/
516
517 spin_unlock_irqrestore(&priv->sta_lock, flags_spin);
518 iwl_send_add_station(priv, &station->sta, flags);
519 return index;
520
521 }
522
523 /*************** DRIVER STATUS FUNCTIONS *****/
524
525 static inline int iwl_is_ready(struct iwl_priv *priv)
526 {
527 /* The adapter is 'ready' if READY and GEO_CONFIGURED bits are
528 * set but EXIT_PENDING is not */
529 return test_bit(STATUS_READY, &priv->status) &&
530 test_bit(STATUS_GEO_CONFIGURED, &priv->status) &&
531 !test_bit(STATUS_EXIT_PENDING, &priv->status);
532 }
533
534 static inline int iwl_is_alive(struct iwl_priv *priv)
535 {
536 return test_bit(STATUS_ALIVE, &priv->status);
537 }
538
539 static inline int iwl_is_init(struct iwl_priv *priv)
540 {
541 return test_bit(STATUS_INIT, &priv->status);
542 }
543
544 static inline int iwl_is_rfkill(struct iwl_priv *priv)
545 {
546 return test_bit(STATUS_RF_KILL_HW, &priv->status) ||
547 test_bit(STATUS_RF_KILL_SW, &priv->status);
548 }
549
550 static inline int iwl_is_ready_rf(struct iwl_priv *priv)
551 {
552
553 if (iwl_is_rfkill(priv))
554 return 0;
555
556 return iwl_is_ready(priv);
557 }
558
559 /*************** HOST COMMAND QUEUE FUNCTIONS *****/
560
561 #define IWL_CMD(x) case x : return #x
562
563 static const char *get_cmd_string(u8 cmd)
564 {
565 switch (cmd) {
566 IWL_CMD(REPLY_ALIVE);
567 IWL_CMD(REPLY_ERROR);
568 IWL_CMD(REPLY_RXON);
569 IWL_CMD(REPLY_RXON_ASSOC);
570 IWL_CMD(REPLY_QOS_PARAM);
571 IWL_CMD(REPLY_RXON_TIMING);
572 IWL_CMD(REPLY_ADD_STA);
573 IWL_CMD(REPLY_REMOVE_STA);
574 IWL_CMD(REPLY_REMOVE_ALL_STA);
575 IWL_CMD(REPLY_TX);
576 IWL_CMD(REPLY_RATE_SCALE);
577 IWL_CMD(REPLY_LEDS_CMD);
578 IWL_CMD(REPLY_TX_LINK_QUALITY_CMD);
579 IWL_CMD(RADAR_NOTIFICATION);
580 IWL_CMD(REPLY_QUIET_CMD);
581 IWL_CMD(REPLY_CHANNEL_SWITCH);
582 IWL_CMD(CHANNEL_SWITCH_NOTIFICATION);
583 IWL_CMD(REPLY_SPECTRUM_MEASUREMENT_CMD);
584 IWL_CMD(SPECTRUM_MEASURE_NOTIFICATION);
585 IWL_CMD(POWER_TABLE_CMD);
586 IWL_CMD(PM_SLEEP_NOTIFICATION);
587 IWL_CMD(PM_DEBUG_STATISTIC_NOTIFIC);
588 IWL_CMD(REPLY_SCAN_CMD);
589 IWL_CMD(REPLY_SCAN_ABORT_CMD);
590 IWL_CMD(SCAN_START_NOTIFICATION);
591 IWL_CMD(SCAN_RESULTS_NOTIFICATION);
592 IWL_CMD(SCAN_COMPLETE_NOTIFICATION);
593 IWL_CMD(BEACON_NOTIFICATION);
594 IWL_CMD(REPLY_TX_BEACON);
595 IWL_CMD(WHO_IS_AWAKE_NOTIFICATION);
596 IWL_CMD(QUIET_NOTIFICATION);
597 IWL_CMD(REPLY_TX_PWR_TABLE_CMD);
598 IWL_CMD(MEASURE_ABORT_NOTIFICATION);
599 IWL_CMD(REPLY_BT_CONFIG);
600 IWL_CMD(REPLY_STATISTICS_CMD);
601 IWL_CMD(STATISTICS_NOTIFICATION);
602 IWL_CMD(REPLY_CARD_STATE_CMD);
603 IWL_CMD(CARD_STATE_NOTIFICATION);
604 IWL_CMD(MISSED_BEACONS_NOTIFICATION);
605 IWL_CMD(REPLY_CT_KILL_CONFIG_CMD);
606 IWL_CMD(SENSITIVITY_CMD);
607 IWL_CMD(REPLY_PHY_CALIBRATION_CMD);
608 IWL_CMD(REPLY_RX_PHY_CMD);
609 IWL_CMD(REPLY_RX_MPDU_CMD);
610 IWL_CMD(REPLY_4965_RX);
611 IWL_CMD(REPLY_COMPRESSED_BA);
612 default:
613 return "UNKNOWN";
614
615 }
616 }
617
618 #define HOST_COMPLETE_TIMEOUT (HZ / 2)
619
620 /**
621 * iwl_enqueue_hcmd - enqueue a uCode command
622 * @priv: device private data point
623 * @cmd: a point to the ucode command structure
624 *
625 * The function returns < 0 values to indicate the operation is
626 * failed. On success, it turns the index (> 0) of command in the
627 * command queue.
628 */
629 static int iwl_enqueue_hcmd(struct iwl_priv *priv, struct iwl_host_cmd *cmd)
630 {
631 struct iwl_tx_queue *txq = &priv->txq[IWL_CMD_QUEUE_NUM];
632 struct iwl_queue *q = &txq->q;
633 struct iwl_tfd_frame *tfd;
634 u32 *control_flags;
635 struct iwl_cmd *out_cmd;
636 u32 idx;
637 u16 fix_size = (u16)(cmd->len + sizeof(out_cmd->hdr));
638 dma_addr_t phys_addr;
639 int ret;
640 unsigned long flags;
641
642 /* If any of the command structures end up being larger than
643 * the TFD_MAX_PAYLOAD_SIZE, and it sent as a 'small' command then
644 * we will need to increase the size of the TFD entries */
645 BUG_ON((fix_size > TFD_MAX_PAYLOAD_SIZE) &&
646 !(cmd->meta.flags & CMD_SIZE_HUGE));
647
648 if (iwl_queue_space(q) < ((cmd->meta.flags & CMD_ASYNC) ? 2 : 1)) {
649 IWL_ERROR("No space for Tx\n");
650 return -ENOSPC;
651 }
652
653 spin_lock_irqsave(&priv->hcmd_lock, flags);
654
655 tfd = &txq->bd[q->first_empty];
656 memset(tfd, 0, sizeof(*tfd));
657
658 control_flags = (u32 *) tfd;
659
660 idx = get_cmd_index(q, q->first_empty, cmd->meta.flags & CMD_SIZE_HUGE);
661 out_cmd = &txq->cmd[idx];
662
663 out_cmd->hdr.cmd = cmd->id;
664 memcpy(&out_cmd->meta, &cmd->meta, sizeof(cmd->meta));
665 memcpy(&out_cmd->cmd.payload, cmd->data, cmd->len);
666
667 /* At this point, the out_cmd now has all of the incoming cmd
668 * information */
669
670 out_cmd->hdr.flags = 0;
671 out_cmd->hdr.sequence = cpu_to_le16(QUEUE_TO_SEQ(IWL_CMD_QUEUE_NUM) |
672 INDEX_TO_SEQ(q->first_empty));
673 if (out_cmd->meta.flags & CMD_SIZE_HUGE)
674 out_cmd->hdr.sequence |= cpu_to_le16(SEQ_HUGE_FRAME);
675
676 phys_addr = txq->dma_addr_cmd + sizeof(txq->cmd[0]) * idx +
677 offsetof(struct iwl_cmd, hdr);
678 iwl_hw_txq_attach_buf_to_tfd(priv, tfd, phys_addr, fix_size);
679
680 IWL_DEBUG_HC("Sending command %s (#%x), seq: 0x%04X, "
681 "%d bytes at %d[%d]:%d\n",
682 get_cmd_string(out_cmd->hdr.cmd),
683 out_cmd->hdr.cmd, le16_to_cpu(out_cmd->hdr.sequence),
684 fix_size, q->first_empty, idx, IWL_CMD_QUEUE_NUM);
685
686 txq->need_update = 1;
687 ret = iwl4965_tx_queue_update_wr_ptr(priv, txq, 0);
688 q->first_empty = iwl_queue_inc_wrap(q->first_empty, q->n_bd);
689 iwl_tx_queue_update_write_ptr(priv, txq);
690
691 spin_unlock_irqrestore(&priv->hcmd_lock, flags);
692 return ret ? ret : idx;
693 }
694
695 int iwl_send_cmd_async(struct iwl_priv *priv, struct iwl_host_cmd *cmd)
696 {
697 int ret;
698
699 BUG_ON(!(cmd->meta.flags & CMD_ASYNC));
700
701 /* An asynchronous command can not expect an SKB to be set. */
702 BUG_ON(cmd->meta.flags & CMD_WANT_SKB);
703
704 /* An asynchronous command MUST have a callback. */
705 BUG_ON(!cmd->meta.u.callback);
706
707 if (test_bit(STATUS_EXIT_PENDING, &priv->status))
708 return -EBUSY;
709
710 ret = iwl_enqueue_hcmd(priv, cmd);
711 if (ret < 0) {
712 IWL_ERROR("Error sending %s: iwl_enqueue_hcmd failed: %d\n",
713 get_cmd_string(cmd->id), ret);
714 return ret;
715 }
716 return 0;
717 }
718
719 int iwl_send_cmd_sync(struct iwl_priv *priv, struct iwl_host_cmd *cmd)
720 {
721 int cmd_idx;
722 int ret;
723 static atomic_t entry = ATOMIC_INIT(0); /* reentrance protection */
724
725 BUG_ON(cmd->meta.flags & CMD_ASYNC);
726
727 /* A synchronous command can not have a callback set. */
728 BUG_ON(cmd->meta.u.callback != NULL);
729
730 if (atomic_xchg(&entry, 1)) {
731 IWL_ERROR("Error sending %s: Already sending a host command\n",
732 get_cmd_string(cmd->id));
733 return -EBUSY;
734 }
735
736 set_bit(STATUS_HCMD_ACTIVE, &priv->status);
737
738 if (cmd->meta.flags & CMD_WANT_SKB)
739 cmd->meta.source = &cmd->meta;
740
741 cmd_idx = iwl_enqueue_hcmd(priv, cmd);
742 if (cmd_idx < 0) {
743 ret = cmd_idx;
744 IWL_ERROR("Error sending %s: iwl_enqueue_hcmd failed: %d\n",
745 get_cmd_string(cmd->id), ret);
746 goto out;
747 }
748
749 ret = wait_event_interruptible_timeout(priv->wait_command_queue,
750 !test_bit(STATUS_HCMD_ACTIVE, &priv->status),
751 HOST_COMPLETE_TIMEOUT);
752 if (!ret) {
753 if (test_bit(STATUS_HCMD_ACTIVE, &priv->status)) {
754 IWL_ERROR("Error sending %s: time out after %dms.\n",
755 get_cmd_string(cmd->id),
756 jiffies_to_msecs(HOST_COMPLETE_TIMEOUT));
757
758 clear_bit(STATUS_HCMD_ACTIVE, &priv->status);
759 ret = -ETIMEDOUT;
760 goto cancel;
761 }
762 }
763
764 if (test_bit(STATUS_RF_KILL_HW, &priv->status)) {
765 IWL_DEBUG_INFO("Command %s aborted: RF KILL Switch\n",
766 get_cmd_string(cmd->id));
767 ret = -ECANCELED;
768 goto fail;
769 }
770 if (test_bit(STATUS_FW_ERROR, &priv->status)) {
771 IWL_DEBUG_INFO("Command %s failed: FW Error\n",
772 get_cmd_string(cmd->id));
773 ret = -EIO;
774 goto fail;
775 }
776 if ((cmd->meta.flags & CMD_WANT_SKB) && !cmd->meta.u.skb) {
777 IWL_ERROR("Error: Response NULL in '%s'\n",
778 get_cmd_string(cmd->id));
779 ret = -EIO;
780 goto out;
781 }
782
783 ret = 0;
784 goto out;
785
786 cancel:
787 if (cmd->meta.flags & CMD_WANT_SKB) {
788 struct iwl_cmd *qcmd;
789
790 /* Cancel the CMD_WANT_SKB flag for the cmd in the
791 * TX cmd queue. Otherwise in case the cmd comes
792 * in later, it will possibly set an invalid
793 * address (cmd->meta.source). */
794 qcmd = &priv->txq[IWL_CMD_QUEUE_NUM].cmd[cmd_idx];
795 qcmd->meta.flags &= ~CMD_WANT_SKB;
796 }
797 fail:
798 if (cmd->meta.u.skb) {
799 dev_kfree_skb_any(cmd->meta.u.skb);
800 cmd->meta.u.skb = NULL;
801 }
802 out:
803 atomic_set(&entry, 0);
804 return ret;
805 }
806
807 int iwl_send_cmd(struct iwl_priv *priv, struct iwl_host_cmd *cmd)
808 {
809 /* A command can not be asynchronous AND expect an SKB to be set. */
810 BUG_ON((cmd->meta.flags & CMD_ASYNC) &&
811 (cmd->meta.flags & CMD_WANT_SKB));
812
813 if (cmd->meta.flags & CMD_ASYNC)
814 return iwl_send_cmd_async(priv, cmd);
815
816 return iwl_send_cmd_sync(priv, cmd);
817 }
818
819 int iwl_send_cmd_pdu(struct iwl_priv *priv, u8 id, u16 len, const void *data)
820 {
821 struct iwl_host_cmd cmd = {
822 .id = id,
823 .len = len,
824 .data = data,
825 };
826
827 return iwl_send_cmd_sync(priv, &cmd);
828 }
829
830 static int __must_check iwl_send_cmd_u32(struct iwl_priv *priv, u8 id, u32 val)
831 {
832 struct iwl_host_cmd cmd = {
833 .id = id,
834 .len = sizeof(val),
835 .data = &val,
836 };
837
838 return iwl_send_cmd_sync(priv, &cmd);
839 }
840
841 int iwl_send_statistics_request(struct iwl_priv *priv)
842 {
843 return iwl_send_cmd_u32(priv, REPLY_STATISTICS_CMD, 0);
844 }
845
846 /**
847 * iwl_rxon_add_station - add station into station table.
848 *
849 * there is only one AP station with id= IWL_AP_ID
850 * NOTE: mutex must be held before calling the this fnction
851 */
852 static int iwl_rxon_add_station(struct iwl_priv *priv,
853 const u8 *addr, int is_ap)
854 {
855 u8 sta_id;
856
857 sta_id = iwl_add_station(priv, addr, is_ap, 0);
858 iwl4965_add_station(priv, addr, is_ap);
859
860 return sta_id;
861 }
862
863 /**
864 * iwl_set_rxon_channel - Set the phymode and channel values in staging RXON
865 * @phymode: MODE_IEEE80211A sets to 5.2GHz; all else set to 2.4GHz
866 * @channel: Any channel valid for the requested phymode
867
868 * In addition to setting the staging RXON, priv->phymode is also set.
869 *
870 * NOTE: Does not commit to the hardware; it sets appropriate bit fields
871 * in the staging RXON flag structure based on the phymode
872 */
873 static int iwl_set_rxon_channel(struct iwl_priv *priv, u8 phymode, u16 channel)
874 {
875 if (!iwl_get_channel_info(priv, phymode, channel)) {
876 IWL_DEBUG_INFO("Could not set channel to %d [%d]\n",
877 channel, phymode);
878 return -EINVAL;
879 }
880
881 if ((le16_to_cpu(priv->staging_rxon.channel) == channel) &&
882 (priv->phymode == phymode))
883 return 0;
884
885 priv->staging_rxon.channel = cpu_to_le16(channel);
886 if (phymode == MODE_IEEE80211A)
887 priv->staging_rxon.flags &= ~RXON_FLG_BAND_24G_MSK;
888 else
889 priv->staging_rxon.flags |= RXON_FLG_BAND_24G_MSK;
890
891 priv->phymode = phymode;
892
893 IWL_DEBUG_INFO("Staging channel set to %d [%d]\n", channel, phymode);
894
895 return 0;
896 }
897
898 /**
899 * iwl_check_rxon_cmd - validate RXON structure is valid
900 *
901 * NOTE: This is really only useful during development and can eventually
902 * be #ifdef'd out once the driver is stable and folks aren't actively
903 * making changes
904 */
905 static int iwl_check_rxon_cmd(struct iwl_rxon_cmd *rxon)
906 {
907 int error = 0;
908 int counter = 1;
909
910 if (rxon->flags & RXON_FLG_BAND_24G_MSK) {
911 error |= le32_to_cpu(rxon->flags &
912 (RXON_FLG_TGJ_NARROW_BAND_MSK |
913 RXON_FLG_RADAR_DETECT_MSK));
914 if (error)
915 IWL_WARNING("check 24G fields %d | %d\n",
916 counter++, error);
917 } else {
918 error |= (rxon->flags & RXON_FLG_SHORT_SLOT_MSK) ?
919 0 : le32_to_cpu(RXON_FLG_SHORT_SLOT_MSK);
920 if (error)
921 IWL_WARNING("check 52 fields %d | %d\n",
922 counter++, error);
923 error |= le32_to_cpu(rxon->flags & RXON_FLG_CCK_MSK);
924 if (error)
925 IWL_WARNING("check 52 CCK %d | %d\n",
926 counter++, error);
927 }
928 error |= (rxon->node_addr[0] | rxon->bssid_addr[0]) & 0x1;
929 if (error)
930 IWL_WARNING("check mac addr %d | %d\n", counter++, error);
931
932 /* make sure basic rates 6Mbps and 1Mbps are supported */
933 error |= (((rxon->ofdm_basic_rates & IWL_RATE_6M_MASK) == 0) &&
934 ((rxon->cck_basic_rates & IWL_RATE_1M_MASK) == 0));
935 if (error)
936 IWL_WARNING("check basic rate %d | %d\n", counter++, error);
937
938 error |= (le16_to_cpu(rxon->assoc_id) > 2007);
939 if (error)
940 IWL_WARNING("check assoc id %d | %d\n", counter++, error);
941
942 error |= ((rxon->flags & (RXON_FLG_CCK_MSK | RXON_FLG_SHORT_SLOT_MSK))
943 == (RXON_FLG_CCK_MSK | RXON_FLG_SHORT_SLOT_MSK));
944 if (error)
945 IWL_WARNING("check CCK and short slot %d | %d\n",
946 counter++, error);
947
948 error |= ((rxon->flags & (RXON_FLG_CCK_MSK | RXON_FLG_AUTO_DETECT_MSK))
949 == (RXON_FLG_CCK_MSK | RXON_FLG_AUTO_DETECT_MSK));
950 if (error)
951 IWL_WARNING("check CCK & auto detect %d | %d\n",
952 counter++, error);
953
954 error |= ((rxon->flags & (RXON_FLG_AUTO_DETECT_MSK |
955 RXON_FLG_TGG_PROTECT_MSK)) == RXON_FLG_TGG_PROTECT_MSK);
956 if (error)
957 IWL_WARNING("check TGG and auto detect %d | %d\n",
958 counter++, error);
959
960 if (error)
961 IWL_WARNING("Tuning to channel %d\n",
962 le16_to_cpu(rxon->channel));
963
964 if (error) {
965 IWL_ERROR("Not a valid iwl_rxon_assoc_cmd field values\n");
966 return -1;
967 }
968 return 0;
969 }
970
971 /**
972 * iwl_full_rxon_required - determine if RXON_ASSOC can be used in RXON commit
973 * @priv: staging_rxon is comapred to active_rxon
974 *
975 * If the RXON structure is changing sufficient to require a new
976 * tune or to clear and reset the RXON_FILTER_ASSOC_MSK then return 1
977 * to indicate a new tune is required.
978 */
979 static int iwl_full_rxon_required(struct iwl_priv *priv)
980 {
981
982 /* These items are only settable from the full RXON command */
983 if (!(priv->active_rxon.filter_flags & RXON_FILTER_ASSOC_MSK) ||
984 compare_ether_addr(priv->staging_rxon.bssid_addr,
985 priv->active_rxon.bssid_addr) ||
986 compare_ether_addr(priv->staging_rxon.node_addr,
987 priv->active_rxon.node_addr) ||
988 compare_ether_addr(priv->staging_rxon.wlap_bssid_addr,
989 priv->active_rxon.wlap_bssid_addr) ||
990 (priv->staging_rxon.dev_type != priv->active_rxon.dev_type) ||
991 (priv->staging_rxon.channel != priv->active_rxon.channel) ||
992 (priv->staging_rxon.air_propagation !=
993 priv->active_rxon.air_propagation) ||
994 (priv->staging_rxon.ofdm_ht_single_stream_basic_rates !=
995 priv->active_rxon.ofdm_ht_single_stream_basic_rates) ||
996 (priv->staging_rxon.ofdm_ht_dual_stream_basic_rates !=
997 priv->active_rxon.ofdm_ht_dual_stream_basic_rates) ||
998 (priv->staging_rxon.rx_chain != priv->active_rxon.rx_chain) ||
999 (priv->staging_rxon.assoc_id != priv->active_rxon.assoc_id))
1000 return 1;
1001
1002 /* flags, filter_flags, ofdm_basic_rates, and cck_basic_rates can
1003 * be updated with the RXON_ASSOC command -- however only some
1004 * flag transitions are allowed using RXON_ASSOC */
1005
1006 /* Check if we are not switching bands */
1007 if ((priv->staging_rxon.flags & RXON_FLG_BAND_24G_MSK) !=
1008 (priv->active_rxon.flags & RXON_FLG_BAND_24G_MSK))
1009 return 1;
1010
1011 /* Check if we are switching association toggle */
1012 if ((priv->staging_rxon.filter_flags & RXON_FILTER_ASSOC_MSK) !=
1013 (priv->active_rxon.filter_flags & RXON_FILTER_ASSOC_MSK))
1014 return 1;
1015
1016 return 0;
1017 }
1018
1019 static int iwl_send_rxon_assoc(struct iwl_priv *priv)
1020 {
1021 int rc = 0;
1022 struct iwl_rx_packet *res = NULL;
1023 struct iwl_rxon_assoc_cmd rxon_assoc;
1024 struct iwl_host_cmd cmd = {
1025 .id = REPLY_RXON_ASSOC,
1026 .len = sizeof(rxon_assoc),
1027 .meta.flags = CMD_WANT_SKB,
1028 .data = &rxon_assoc,
1029 };
1030 const struct iwl_rxon_cmd *rxon1 = &priv->staging_rxon;
1031 const struct iwl_rxon_cmd *rxon2 = &priv->active_rxon;
1032
1033 if ((rxon1->flags == rxon2->flags) &&
1034 (rxon1->filter_flags == rxon2->filter_flags) &&
1035 (rxon1->cck_basic_rates == rxon2->cck_basic_rates) &&
1036 (rxon1->ofdm_ht_single_stream_basic_rates ==
1037 rxon2->ofdm_ht_single_stream_basic_rates) &&
1038 (rxon1->ofdm_ht_dual_stream_basic_rates ==
1039 rxon2->ofdm_ht_dual_stream_basic_rates) &&
1040 (rxon1->rx_chain == rxon2->rx_chain) &&
1041 (rxon1->ofdm_basic_rates == rxon2->ofdm_basic_rates)) {
1042 IWL_DEBUG_INFO("Using current RXON_ASSOC. Not resending.\n");
1043 return 0;
1044 }
1045
1046 rxon_assoc.flags = priv->staging_rxon.flags;
1047 rxon_assoc.filter_flags = priv->staging_rxon.filter_flags;
1048 rxon_assoc.ofdm_basic_rates = priv->staging_rxon.ofdm_basic_rates;
1049 rxon_assoc.cck_basic_rates = priv->staging_rxon.cck_basic_rates;
1050 rxon_assoc.reserved = 0;
1051 rxon_assoc.ofdm_ht_single_stream_basic_rates =
1052 priv->staging_rxon.ofdm_ht_single_stream_basic_rates;
1053 rxon_assoc.ofdm_ht_dual_stream_basic_rates =
1054 priv->staging_rxon.ofdm_ht_dual_stream_basic_rates;
1055 rxon_assoc.rx_chain_select_flags = priv->staging_rxon.rx_chain;
1056
1057 rc = iwl_send_cmd_sync(priv, &cmd);
1058 if (rc)
1059 return rc;
1060
1061 res = (struct iwl_rx_packet *)cmd.meta.u.skb->data;
1062 if (res->hdr.flags & IWL_CMD_FAILED_MSK) {
1063 IWL_ERROR("Bad return from REPLY_RXON_ASSOC command\n");
1064 rc = -EIO;
1065 }
1066
1067 priv->alloc_rxb_skb--;
1068 dev_kfree_skb_any(cmd.meta.u.skb);
1069
1070 return rc;
1071 }
1072
1073 /**
1074 * iwl_commit_rxon - commit staging_rxon to hardware
1075 *
1076 * The RXON command in staging_rxon is commited to the hardware and
1077 * the active_rxon structure is updated with the new data. This
1078 * function correctly transitions out of the RXON_ASSOC_MSK state if
1079 * a HW tune is required based on the RXON structure changes.
1080 */
1081 static int iwl_commit_rxon(struct iwl_priv *priv)
1082 {
1083 /* cast away the const for active_rxon in this function */
1084 struct iwl_rxon_cmd *active_rxon = (void *)&priv->active_rxon;
1085 DECLARE_MAC_BUF(mac);
1086 int rc = 0;
1087
1088 if (!iwl_is_alive(priv))
1089 return -1;
1090
1091 /* always get timestamp with Rx frame */
1092 priv->staging_rxon.flags |= RXON_FLG_TSF2HOST_MSK;
1093
1094 rc = iwl_check_rxon_cmd(&priv->staging_rxon);
1095 if (rc) {
1096 IWL_ERROR("Invalid RXON configuration. Not committing.\n");
1097 return -EINVAL;
1098 }
1099
1100 /* If we don't need to send a full RXON, we can use
1101 * iwl_rxon_assoc_cmd which is used to reconfigure filter
1102 * and other flags for the current radio configuration. */
1103 if (!iwl_full_rxon_required(priv)) {
1104 rc = iwl_send_rxon_assoc(priv);
1105 if (rc) {
1106 IWL_ERROR("Error setting RXON_ASSOC "
1107 "configuration (%d).\n", rc);
1108 return rc;
1109 }
1110
1111 memcpy(active_rxon, &priv->staging_rxon, sizeof(*active_rxon));
1112
1113 return 0;
1114 }
1115
1116 /* station table will be cleared */
1117 priv->assoc_station_added = 0;
1118
1119 #ifdef CONFIG_IWLWIFI_SENSITIVITY
1120 priv->sensitivity_data.state = IWL_SENS_CALIB_NEED_REINIT;
1121 if (!priv->error_recovering)
1122 priv->start_calib = 0;
1123
1124 iwl4965_init_sensitivity(priv, CMD_ASYNC, 1);
1125 #endif /* CONFIG_IWLWIFI_SENSITIVITY */
1126
1127 /* If we are currently associated and the new config requires
1128 * an RXON_ASSOC and the new config wants the associated mask enabled,
1129 * we must clear the associated from the active configuration
1130 * before we apply the new config */
1131 if (iwl_is_associated(priv) &&
1132 (priv->staging_rxon.filter_flags & RXON_FILTER_ASSOC_MSK)) {
1133 IWL_DEBUG_INFO("Toggling associated bit on current RXON\n");
1134 active_rxon->filter_flags &= ~RXON_FILTER_ASSOC_MSK;
1135
1136 rc = iwl_send_cmd_pdu(priv, REPLY_RXON,
1137 sizeof(struct iwl_rxon_cmd),
1138 &priv->active_rxon);
1139
1140 /* If the mask clearing failed then we set
1141 * active_rxon back to what it was previously */
1142 if (rc) {
1143 active_rxon->filter_flags |= RXON_FILTER_ASSOC_MSK;
1144 IWL_ERROR("Error clearing ASSOC_MSK on current "
1145 "configuration (%d).\n", rc);
1146 return rc;
1147 }
1148 }
1149
1150 IWL_DEBUG_INFO("Sending RXON\n"
1151 "* with%s RXON_FILTER_ASSOC_MSK\n"
1152 "* channel = %d\n"
1153 "* bssid = %s\n",
1154 ((priv->staging_rxon.filter_flags &
1155 RXON_FILTER_ASSOC_MSK) ? "" : "out"),
1156 le16_to_cpu(priv->staging_rxon.channel),
1157 print_mac(mac, priv->staging_rxon.bssid_addr));
1158
1159 /* Apply the new configuration */
1160 rc = iwl_send_cmd_pdu(priv, REPLY_RXON,
1161 sizeof(struct iwl_rxon_cmd), &priv->staging_rxon);
1162 if (rc) {
1163 IWL_ERROR("Error setting new configuration (%d).\n", rc);
1164 return rc;
1165 }
1166
1167 iwl_clear_stations_table(priv);
1168
1169 #ifdef CONFIG_IWLWIFI_SENSITIVITY
1170 if (!priv->error_recovering)
1171 priv->start_calib = 0;
1172
1173 priv->sensitivity_data.state = IWL_SENS_CALIB_NEED_REINIT;
1174 iwl4965_init_sensitivity(priv, CMD_ASYNC, 1);
1175 #endif /* CONFIG_IWLWIFI_SENSITIVITY */
1176
1177 memcpy(active_rxon, &priv->staging_rxon, sizeof(*active_rxon));
1178
1179 /* If we issue a new RXON command which required a tune then we must
1180 * send a new TXPOWER command or we won't be able to Tx any frames */
1181 rc = iwl_hw_reg_send_txpower(priv);
1182 if (rc) {
1183 IWL_ERROR("Error setting Tx power (%d).\n", rc);
1184 return rc;
1185 }
1186
1187 /* Add the broadcast address so we can send broadcast frames */
1188 if (iwl_rxon_add_station(priv, BROADCAST_ADDR, 0) ==
1189 IWL_INVALID_STATION) {
1190 IWL_ERROR("Error adding BROADCAST address for transmit.\n");
1191 return -EIO;
1192 }
1193
1194 /* If we have set the ASSOC_MSK and we are in BSS mode then
1195 * add the IWL_AP_ID to the station rate table */
1196 if (iwl_is_associated(priv) &&
1197 (priv->iw_mode == IEEE80211_IF_TYPE_STA)) {
1198 if (iwl_rxon_add_station(priv, priv->active_rxon.bssid_addr, 1)
1199 == IWL_INVALID_STATION) {
1200 IWL_ERROR("Error adding AP address for transmit.\n");
1201 return -EIO;
1202 }
1203 priv->assoc_station_added = 1;
1204 }
1205
1206 return 0;
1207 }
1208
1209 static int iwl_send_bt_config(struct iwl_priv *priv)
1210 {
1211 struct iwl_bt_cmd bt_cmd = {
1212 .flags = 3,
1213 .lead_time = 0xAA,
1214 .max_kill = 1,
1215 .kill_ack_mask = 0,
1216 .kill_cts_mask = 0,
1217 };
1218
1219 return iwl_send_cmd_pdu(priv, REPLY_BT_CONFIG,
1220 sizeof(struct iwl_bt_cmd), &bt_cmd);
1221 }
1222
1223 static int iwl_send_scan_abort(struct iwl_priv *priv)
1224 {
1225 int rc = 0;
1226 struct iwl_rx_packet *res;
1227 struct iwl_host_cmd cmd = {
1228 .id = REPLY_SCAN_ABORT_CMD,
1229 .meta.flags = CMD_WANT_SKB,
1230 };
1231
1232 /* If there isn't a scan actively going on in the hardware
1233 * then we are in between scan bands and not actually
1234 * actively scanning, so don't send the abort command */
1235 if (!test_bit(STATUS_SCAN_HW, &priv->status)) {
1236 clear_bit(STATUS_SCAN_ABORTING, &priv->status);
1237 return 0;
1238 }
1239
1240 rc = iwl_send_cmd_sync(priv, &cmd);
1241 if (rc) {
1242 clear_bit(STATUS_SCAN_ABORTING, &priv->status);
1243 return rc;
1244 }
1245
1246 res = (struct iwl_rx_packet *)cmd.meta.u.skb->data;
1247 if (res->u.status != CAN_ABORT_STATUS) {
1248 /* The scan abort will return 1 for success or
1249 * 2 for "failure". A failure condition can be
1250 * due to simply not being in an active scan which
1251 * can occur if we send the scan abort before we
1252 * the microcode has notified us that a scan is
1253 * completed. */
1254 IWL_DEBUG_INFO("SCAN_ABORT returned %d.\n", res->u.status);
1255 clear_bit(STATUS_SCAN_ABORTING, &priv->status);
1256 clear_bit(STATUS_SCAN_HW, &priv->status);
1257 }
1258
1259 dev_kfree_skb_any(cmd.meta.u.skb);
1260
1261 return rc;
1262 }
1263
1264 static int iwl_card_state_sync_callback(struct iwl_priv *priv,
1265 struct iwl_cmd *cmd,
1266 struct sk_buff *skb)
1267 {
1268 return 1;
1269 }
1270
1271 /*
1272 * CARD_STATE_CMD
1273 *
1274 * Use: Sets the internal card state to enable, disable, or halt
1275 *
1276 * When in the 'enable' state the card operates as normal.
1277 * When in the 'disable' state, the card enters into a low power mode.
1278 * When in the 'halt' state, the card is shut down and must be fully
1279 * restarted to come back on.
1280 */
1281 static int iwl_send_card_state(struct iwl_priv *priv, u32 flags, u8 meta_flag)
1282 {
1283 struct iwl_host_cmd cmd = {
1284 .id = REPLY_CARD_STATE_CMD,
1285 .len = sizeof(u32),
1286 .data = &flags,
1287 .meta.flags = meta_flag,
1288 };
1289
1290 if (meta_flag & CMD_ASYNC)
1291 cmd.meta.u.callback = iwl_card_state_sync_callback;
1292
1293 return iwl_send_cmd(priv, &cmd);
1294 }
1295
1296 static int iwl_add_sta_sync_callback(struct iwl_priv *priv,
1297 struct iwl_cmd *cmd, struct sk_buff *skb)
1298 {
1299 struct iwl_rx_packet *res = NULL;
1300
1301 if (!skb) {
1302 IWL_ERROR("Error: Response NULL in REPLY_ADD_STA.\n");
1303 return 1;
1304 }
1305
1306 res = (struct iwl_rx_packet *)skb->data;
1307 if (res->hdr.flags & IWL_CMD_FAILED_MSK) {
1308 IWL_ERROR("Bad return from REPLY_ADD_STA (0x%08X)\n",
1309 res->hdr.flags);
1310 return 1;
1311 }
1312
1313 switch (res->u.add_sta.status) {
1314 case ADD_STA_SUCCESS_MSK:
1315 break;
1316 default:
1317 break;
1318 }
1319
1320 /* We didn't cache the SKB; let the caller free it */
1321 return 1;
1322 }
1323
1324 int iwl_send_add_station(struct iwl_priv *priv,
1325 struct iwl_addsta_cmd *sta, u8 flags)
1326 {
1327 struct iwl_rx_packet *res = NULL;
1328 int rc = 0;
1329 struct iwl_host_cmd cmd = {
1330 .id = REPLY_ADD_STA,
1331 .len = sizeof(struct iwl_addsta_cmd),
1332 .meta.flags = flags,
1333 .data = sta,
1334 };
1335
1336 if (flags & CMD_ASYNC)
1337 cmd.meta.u.callback = iwl_add_sta_sync_callback;
1338 else
1339 cmd.meta.flags |= CMD_WANT_SKB;
1340
1341 rc = iwl_send_cmd(priv, &cmd);
1342
1343 if (rc || (flags & CMD_ASYNC))
1344 return rc;
1345
1346 res = (struct iwl_rx_packet *)cmd.meta.u.skb->data;
1347 if (res->hdr.flags & IWL_CMD_FAILED_MSK) {
1348 IWL_ERROR("Bad return from REPLY_ADD_STA (0x%08X)\n",
1349 res->hdr.flags);
1350 rc = -EIO;
1351 }
1352
1353 if (rc == 0) {
1354 switch (res->u.add_sta.status) {
1355 case ADD_STA_SUCCESS_MSK:
1356 IWL_DEBUG_INFO("REPLY_ADD_STA PASSED\n");
1357 break;
1358 default:
1359 rc = -EIO;
1360 IWL_WARNING("REPLY_ADD_STA failed\n");
1361 break;
1362 }
1363 }
1364
1365 priv->alloc_rxb_skb--;
1366 dev_kfree_skb_any(cmd.meta.u.skb);
1367
1368 return rc;
1369 }
1370
1371 static int iwl_update_sta_key_info(struct iwl_priv *priv,
1372 struct ieee80211_key_conf *keyconf,
1373 u8 sta_id)
1374 {
1375 unsigned long flags;
1376 __le16 key_flags = 0;
1377
1378 switch (keyconf->alg) {
1379 case ALG_CCMP:
1380 key_flags |= STA_KEY_FLG_CCMP;
1381 key_flags |= cpu_to_le16(
1382 keyconf->keyidx << STA_KEY_FLG_KEYID_POS);
1383 key_flags &= ~STA_KEY_FLG_INVALID;
1384 break;
1385 case ALG_TKIP:
1386 case ALG_WEP:
1387 return -EINVAL;
1388 default:
1389 return -EINVAL;
1390 }
1391 spin_lock_irqsave(&priv->sta_lock, flags);
1392 priv->stations[sta_id].keyinfo.alg = keyconf->alg;
1393 priv->stations[sta_id].keyinfo.keylen = keyconf->keylen;
1394 memcpy(priv->stations[sta_id].keyinfo.key, keyconf->key,
1395 keyconf->keylen);
1396
1397 memcpy(priv->stations[sta_id].sta.key.key, keyconf->key,
1398 keyconf->keylen);
1399 priv->stations[sta_id].sta.key.key_flags = key_flags;
1400 priv->stations[sta_id].sta.sta.modify_mask = STA_MODIFY_KEY_MASK;
1401 priv->stations[sta_id].sta.mode = STA_CONTROL_MODIFY_MSK;
1402
1403 spin_unlock_irqrestore(&priv->sta_lock, flags);
1404
1405 IWL_DEBUG_INFO("hwcrypto: modify ucode station key info\n");
1406 iwl_send_add_station(priv, &priv->stations[sta_id].sta, 0);
1407 return 0;
1408 }
1409
1410 static int iwl_clear_sta_key_info(struct iwl_priv *priv, u8 sta_id)
1411 {
1412 unsigned long flags;
1413
1414 spin_lock_irqsave(&priv->sta_lock, flags);
1415 memset(&priv->stations[sta_id].keyinfo, 0, sizeof(struct iwl_hw_key));
1416 memset(&priv->stations[sta_id].sta.key, 0, sizeof(struct iwl_keyinfo));
1417 priv->stations[sta_id].sta.key.key_flags = STA_KEY_FLG_NO_ENC;
1418 priv->stations[sta_id].sta.sta.modify_mask = STA_MODIFY_KEY_MASK;
1419 priv->stations[sta_id].sta.mode = STA_CONTROL_MODIFY_MSK;
1420 spin_unlock_irqrestore(&priv->sta_lock, flags);
1421
1422 IWL_DEBUG_INFO("hwcrypto: clear ucode station key info\n");
1423 iwl_send_add_station(priv, &priv->stations[sta_id].sta, 0);
1424 return 0;
1425 }
1426
1427 static void iwl_clear_free_frames(struct iwl_priv *priv)
1428 {
1429 struct list_head *element;
1430
1431 IWL_DEBUG_INFO("%d frames on pre-allocated heap on clear.\n",
1432 priv->frames_count);
1433
1434 while (!list_empty(&priv->free_frames)) {
1435 element = priv->free_frames.next;
1436 list_del(element);
1437 kfree(list_entry(element, struct iwl_frame, list));
1438 priv->frames_count--;
1439 }
1440
1441 if (priv->frames_count) {
1442 IWL_WARNING("%d frames still in use. Did we lose one?\n",
1443 priv->frames_count);
1444 priv->frames_count = 0;
1445 }
1446 }
1447
1448 static struct iwl_frame *iwl_get_free_frame(struct iwl_priv *priv)
1449 {
1450 struct iwl_frame *frame;
1451 struct list_head *element;
1452 if (list_empty(&priv->free_frames)) {
1453 frame = kzalloc(sizeof(*frame), GFP_KERNEL);
1454 if (!frame) {
1455 IWL_ERROR("Could not allocate frame!\n");
1456 return NULL;
1457 }
1458
1459 priv->frames_count++;
1460 return frame;
1461 }
1462
1463 element = priv->free_frames.next;
1464 list_del(element);
1465 return list_entry(element, struct iwl_frame, list);
1466 }
1467
1468 static void iwl_free_frame(struct iwl_priv *priv, struct iwl_frame *frame)
1469 {
1470 memset(frame, 0, sizeof(*frame));
1471 list_add(&frame->list, &priv->free_frames);
1472 }
1473
1474 unsigned int iwl_fill_beacon_frame(struct iwl_priv *priv,
1475 struct ieee80211_hdr *hdr,
1476 const u8 *dest, int left)
1477 {
1478
1479 if (!iwl_is_associated(priv) || !priv->ibss_beacon ||
1480 ((priv->iw_mode != IEEE80211_IF_TYPE_IBSS) &&
1481 (priv->iw_mode != IEEE80211_IF_TYPE_AP)))
1482 return 0;
1483
1484 if (priv->ibss_beacon->len > left)
1485 return 0;
1486
1487 memcpy(hdr, priv->ibss_beacon->data, priv->ibss_beacon->len);
1488
1489 return priv->ibss_beacon->len;
1490 }
1491
1492 int iwl_rate_index_from_plcp(int plcp)
1493 {
1494 int i = 0;
1495
1496 if (plcp & RATE_MCS_HT_MSK) {
1497 i = (plcp & 0xff);
1498
1499 if (i >= IWL_RATE_MIMO_6M_PLCP)
1500 i = i - IWL_RATE_MIMO_6M_PLCP;
1501
1502 i += IWL_FIRST_OFDM_RATE;
1503 /* skip 9M not supported in ht*/
1504 if (i >= IWL_RATE_9M_INDEX)
1505 i += 1;
1506 if ((i >= IWL_FIRST_OFDM_RATE) &&
1507 (i <= IWL_LAST_OFDM_RATE))
1508 return i;
1509 } else {
1510 for (i = 0; i < ARRAY_SIZE(iwl_rates); i++)
1511 if (iwl_rates[i].plcp == (plcp &0xFF))
1512 return i;
1513 }
1514 return -1;
1515 }
1516
1517 static u8 iwl_rate_get_lowest_plcp(int rate_mask)
1518 {
1519 u8 i;
1520
1521 for (i = IWL_RATE_1M_INDEX; i != IWL_RATE_INVALID;
1522 i = iwl_rates[i].next_ieee) {
1523 if (rate_mask & (1 << i))
1524 return iwl_rates[i].plcp;
1525 }
1526
1527 return IWL_RATE_INVALID;
1528 }
1529
1530 static int iwl_send_beacon_cmd(struct iwl_priv *priv)
1531 {
1532 struct iwl_frame *frame;
1533 unsigned int frame_size;
1534 int rc;
1535 u8 rate;
1536
1537 frame = iwl_get_free_frame(priv);
1538
1539 if (!frame) {
1540 IWL_ERROR("Could not obtain free frame buffer for beacon "
1541 "command.\n");
1542 return -ENOMEM;
1543 }
1544
1545 if (!(priv->staging_rxon.flags & RXON_FLG_BAND_24G_MSK)) {
1546 rate = iwl_rate_get_lowest_plcp(priv->active_rate_basic &
1547 0xFF0);
1548 if (rate == IWL_INVALID_RATE)
1549 rate = IWL_RATE_6M_PLCP;
1550 } else {
1551 rate = iwl_rate_get_lowest_plcp(priv->active_rate_basic & 0xF);
1552 if (rate == IWL_INVALID_RATE)
1553 rate = IWL_RATE_1M_PLCP;
1554 }
1555
1556 frame_size = iwl_hw_get_beacon_cmd(priv, frame, rate);
1557
1558 rc = iwl_send_cmd_pdu(priv, REPLY_TX_BEACON, frame_size,
1559 &frame->u.cmd[0]);
1560
1561 iwl_free_frame(priv, frame);
1562
1563 return rc;
1564 }
1565
1566 /******************************************************************************
1567 *
1568 * EEPROM related functions
1569 *
1570 ******************************************************************************/
1571
1572 static void get_eeprom_mac(struct iwl_priv *priv, u8 *mac)
1573 {
1574 memcpy(mac, priv->eeprom.mac_address, 6);
1575 }
1576
1577 /**
1578 * iwl_eeprom_init - read EEPROM contents
1579 *
1580 * Load the EEPROM from adapter into priv->eeprom
1581 *
1582 * NOTE: This routine uses the non-debug IO access functions.
1583 */
1584 int iwl_eeprom_init(struct iwl_priv *priv)
1585 {
1586 u16 *e = (u16 *)&priv->eeprom;
1587 u32 gp = iwl_read32(priv, CSR_EEPROM_GP);
1588 u32 r;
1589 int sz = sizeof(priv->eeprom);
1590 int rc;
1591 int i;
1592 u16 addr;
1593
1594 /* The EEPROM structure has several padding buffers within it
1595 * and when adding new EEPROM maps is subject to programmer errors
1596 * which may be very difficult to identify without explicitly
1597 * checking the resulting size of the eeprom map. */
1598 BUILD_BUG_ON(sizeof(priv->eeprom) != IWL_EEPROM_IMAGE_SIZE);
1599
1600 if ((gp & CSR_EEPROM_GP_VALID_MSK) == CSR_EEPROM_GP_BAD_SIGNATURE) {
1601 IWL_ERROR("EEPROM not found, EEPROM_GP=0x%08x", gp);
1602 return -ENOENT;
1603 }
1604
1605 rc = iwl_eeprom_aqcuire_semaphore(priv);
1606 if (rc < 0) {
1607 IWL_ERROR("Failed to aqcuire EEPROM semaphore.\n");
1608 return -ENOENT;
1609 }
1610
1611 /* eeprom is an array of 16bit values */
1612 for (addr = 0; addr < sz; addr += sizeof(u16)) {
1613 _iwl_write32(priv, CSR_EEPROM_REG, addr << 1);
1614 _iwl_clear_bit(priv, CSR_EEPROM_REG, CSR_EEPROM_REG_BIT_CMD);
1615
1616 for (i = 0; i < IWL_EEPROM_ACCESS_TIMEOUT;
1617 i += IWL_EEPROM_ACCESS_DELAY) {
1618 r = _iwl_read_restricted(priv, CSR_EEPROM_REG);
1619 if (r & CSR_EEPROM_REG_READ_VALID_MSK)
1620 break;
1621 udelay(IWL_EEPROM_ACCESS_DELAY);
1622 }
1623
1624 if (!(r & CSR_EEPROM_REG_READ_VALID_MSK)) {
1625 IWL_ERROR("Time out reading EEPROM[%d]", addr);
1626 rc = -ETIMEDOUT;
1627 goto done;
1628 }
1629 e[addr / 2] = le16_to_cpu(r >> 16);
1630 }
1631 rc = 0;
1632
1633 done:
1634 iwl_eeprom_release_semaphore(priv);
1635 return rc;
1636 }
1637
1638 /******************************************************************************
1639 *
1640 * Misc. internal state and helper functions
1641 *
1642 ******************************************************************************/
1643 #ifdef CONFIG_IWLWIFI_DEBUG
1644
1645 /**
1646 * iwl_report_frame - dump frame to syslog during debug sessions
1647 *
1648 * hack this function to show different aspects of received frames,
1649 * including selective frame dumps.
1650 * group100 parameter selects whether to show 1 out of 100 good frames.
1651 *
1652 * TODO: ieee80211_hdr stuff is common to 3945 and 4965, so frame type
1653 * info output is okay, but some of this stuff (e.g. iwl_rx_frame_stats)
1654 * is 3945-specific and gives bad output for 4965. Need to split the
1655 * functionality, keep common stuff here.
1656 */
1657 void iwl_report_frame(struct iwl_priv *priv,
1658 struct iwl_rx_packet *pkt,
1659 struct ieee80211_hdr *header, int group100)
1660 {
1661 u32 to_us;
1662 u32 print_summary = 0;
1663 u32 print_dump = 0; /* set to 1 to dump all frames' contents */
1664 u32 hundred = 0;
1665 u32 dataframe = 0;
1666 u16 fc;
1667 u16 seq_ctl;
1668 u16 channel;
1669 u16 phy_flags;
1670 int rate_sym;
1671 u16 length;
1672 u16 status;
1673 u16 bcn_tmr;
1674 u32 tsf_low;
1675 u64 tsf;
1676 u8 rssi;
1677 u8 agc;
1678 u16 sig_avg;
1679 u16 noise_diff;
1680 struct iwl_rx_frame_stats *rx_stats = IWL_RX_STATS(pkt);
1681 struct iwl_rx_frame_hdr *rx_hdr = IWL_RX_HDR(pkt);
1682 struct iwl_rx_frame_end *rx_end = IWL_RX_END(pkt);
1683 u8 *data = IWL_RX_DATA(pkt);
1684
1685 /* MAC header */
1686 fc = le16_to_cpu(header->frame_control);
1687 seq_ctl = le16_to_cpu(header->seq_ctrl);
1688
1689 /* metadata */
1690 channel = le16_to_cpu(rx_hdr->channel);
1691 phy_flags = le16_to_cpu(rx_hdr->phy_flags);
1692 rate_sym = rx_hdr->rate;
1693 length = le16_to_cpu(rx_hdr->len);
1694
1695 /* end-of-frame status and timestamp */
1696 status = le32_to_cpu(rx_end->status);
1697 bcn_tmr = le32_to_cpu(rx_end->beacon_timestamp);
1698 tsf_low = le64_to_cpu(rx_end->timestamp) & 0x0ffffffff;
1699 tsf = le64_to_cpu(rx_end->timestamp);
1700
1701 /* signal statistics */
1702 rssi = rx_stats->rssi;
1703 agc = rx_stats->agc;
1704 sig_avg = le16_to_cpu(rx_stats->sig_avg);
1705 noise_diff = le16_to_cpu(rx_stats->noise_diff);
1706
1707 to_us = !compare_ether_addr(header->addr1, priv->mac_addr);
1708
1709 /* if data frame is to us and all is good,
1710 * (optionally) print summary for only 1 out of every 100 */
1711 if (to_us && (fc & ~IEEE80211_FCTL_PROTECTED) ==
1712 (IEEE80211_FCTL_FROMDS | IEEE80211_FTYPE_DATA)) {
1713 dataframe = 1;
1714 if (!group100)
1715 print_summary = 1; /* print each frame */
1716 else if (priv->framecnt_to_us < 100) {
1717 priv->framecnt_to_us++;
1718 print_summary = 0;
1719 } else {
1720 priv->framecnt_to_us = 0;
1721 print_summary = 1;
1722 hundred = 1;
1723 }
1724 } else {
1725 /* print summary for all other frames */
1726 print_summary = 1;
1727 }
1728
1729 if (print_summary) {
1730 char *title;
1731 u32 rate;
1732
1733 if (hundred)
1734 title = "100Frames";
1735 else if (fc & IEEE80211_FCTL_RETRY)
1736 title = "Retry";
1737 else if (ieee80211_is_assoc_response(fc))
1738 title = "AscRsp";
1739 else if (ieee80211_is_reassoc_response(fc))
1740 title = "RasRsp";
1741 else if (ieee80211_is_probe_response(fc)) {
1742 title = "PrbRsp";
1743 print_dump = 1; /* dump frame contents */
1744 } else if (ieee80211_is_beacon(fc)) {
1745 title = "Beacon";
1746 print_dump = 1; /* dump frame contents */
1747 } else if (ieee80211_is_atim(fc))
1748 title = "ATIM";
1749 else if (ieee80211_is_auth(fc))
1750 title = "Auth";
1751 else if (ieee80211_is_deauth(fc))
1752 title = "DeAuth";
1753 else if (ieee80211_is_disassoc(fc))
1754 title = "DisAssoc";
1755 else
1756 title = "Frame";
1757
1758 rate = iwl_rate_index_from_plcp(rate_sym);
1759 if (rate == -1)
1760 rate = 0;
1761 else
1762 rate = iwl_rates[rate].ieee / 2;
1763
1764 /* print frame summary.
1765 * MAC addresses show just the last byte (for brevity),
1766 * but you can hack it to show more, if you'd like to. */
1767 if (dataframe)
1768 IWL_DEBUG_RX("%s: mhd=0x%04x, dst=0x%02x, "
1769 "len=%u, rssi=%d, chnl=%d, rate=%u, \n",
1770 title, fc, header->addr1[5],
1771 length, rssi, channel, rate);
1772 else {
1773 /* src/dst addresses assume managed mode */
1774 IWL_DEBUG_RX("%s: 0x%04x, dst=0x%02x, "
1775 "src=0x%02x, rssi=%u, tim=%lu usec, "
1776 "phy=0x%02x, chnl=%d\n",
1777 title, fc, header->addr1[5],
1778 header->addr3[5], rssi,
1779 tsf_low - priv->scan_start_tsf,
1780 phy_flags, channel);
1781 }
1782 }
1783 if (print_dump)
1784 iwl_print_hex_dump(IWL_DL_RX, data, length);
1785 }
1786 #endif
1787
1788 static void iwl_unset_hw_setting(struct iwl_priv *priv)
1789 {
1790 if (priv->hw_setting.shared_virt)
1791 pci_free_consistent(priv->pci_dev,
1792 sizeof(struct iwl_shared),
1793 priv->hw_setting.shared_virt,
1794 priv->hw_setting.shared_phys);
1795 }
1796
1797 /**
1798 * iwl_supported_rate_to_ie - fill in the supported rate in IE field
1799 *
1800 * return : set the bit for each supported rate insert in ie
1801 */
1802 static u16 iwl_supported_rate_to_ie(u8 *ie, u16 supported_rate,
1803 u16 basic_rate, int *left)
1804 {
1805 u16 ret_rates = 0, bit;
1806 int i;
1807 u8 *cnt = ie;
1808 u8 *rates = ie + 1;
1809
1810 for (bit = 1, i = 0; i < IWL_RATE_COUNT; i++, bit <<= 1) {
1811 if (bit & supported_rate) {
1812 ret_rates |= bit;
1813 rates[*cnt] = iwl_rates[i].ieee |
1814 ((bit & basic_rate) ? 0x80 : 0x00);
1815 (*cnt)++;
1816 (*left)--;
1817 if ((*left <= 0) ||
1818 (*cnt >= IWL_SUPPORTED_RATES_IE_LEN))
1819 break;
1820 }
1821 }
1822
1823 return ret_rates;
1824 }
1825
1826 #ifdef CONFIG_IWLWIFI_HT
1827 void static iwl_set_ht_capab(struct ieee80211_hw *hw,
1828 struct ieee80211_ht_capability *ht_cap,
1829 u8 use_wide_chan);
1830 #endif
1831
1832 /**
1833 * iwl_fill_probe_req - fill in all required fields and IE for probe request
1834 */
1835 static u16 iwl_fill_probe_req(struct iwl_priv *priv,
1836 struct ieee80211_mgmt *frame,
1837 int left, int is_direct)
1838 {
1839 int len = 0;
1840 u8 *pos = NULL;
1841 u16 active_rates, ret_rates, cck_rates;
1842
1843 /* Make sure there is enough space for the probe request,
1844 * two mandatory IEs and the data */
1845 left -= 24;
1846 if (left < 0)
1847 return 0;
1848 len += 24;
1849
1850 frame->frame_control = cpu_to_le16(IEEE80211_STYPE_PROBE_REQ);
1851 memcpy(frame->da, BROADCAST_ADDR, ETH_ALEN);
1852 memcpy(frame->sa, priv->mac_addr, ETH_ALEN);
1853 memcpy(frame->bssid, BROADCAST_ADDR, ETH_ALEN);
1854 frame->seq_ctrl = 0;
1855
1856 /* fill in our indirect SSID IE */
1857 /* ...next IE... */
1858
1859 left -= 2;
1860 if (left < 0)
1861 return 0;
1862 len += 2;
1863 pos = &(frame->u.probe_req.variable[0]);
1864 *pos++ = WLAN_EID_SSID;
1865 *pos++ = 0;
1866
1867 /* fill in our direct SSID IE... */
1868 if (is_direct) {
1869 /* ...next IE... */
1870 left -= 2 + priv->essid_len;
1871 if (left < 0)
1872 return 0;
1873 /* ... fill it in... */
1874 *pos++ = WLAN_EID_SSID;
1875 *pos++ = priv->essid_len;
1876 memcpy(pos, priv->essid, priv->essid_len);
1877 pos += priv->essid_len;
1878 len += 2 + priv->essid_len;
1879 }
1880
1881 /* fill in supported rate */
1882 /* ...next IE... */
1883 left -= 2;
1884 if (left < 0)
1885 return 0;
1886
1887 /* ... fill it in... */
1888 *pos++ = WLAN_EID_SUPP_RATES;
1889 *pos = 0;
1890
1891 priv->active_rate = priv->rates_mask;
1892 active_rates = priv->active_rate;
1893 priv->active_rate_basic = priv->rates_mask & IWL_BASIC_RATES_MASK;
1894
1895 cck_rates = IWL_CCK_RATES_MASK & active_rates;
1896 ret_rates = iwl_supported_rate_to_ie(pos, cck_rates,
1897 priv->active_rate_basic, &left);
1898 active_rates &= ~ret_rates;
1899
1900 ret_rates = iwl_supported_rate_to_ie(pos, active_rates,
1901 priv->active_rate_basic, &left);
1902 active_rates &= ~ret_rates;
1903
1904 len += 2 + *pos;
1905 pos += (*pos) + 1;
1906 if (active_rates == 0)
1907 goto fill_end;
1908
1909 /* fill in supported extended rate */
1910 /* ...next IE... */
1911 left -= 2;
1912 if (left < 0)
1913 return 0;
1914 /* ... fill it in... */
1915 *pos++ = WLAN_EID_EXT_SUPP_RATES;
1916 *pos = 0;
1917 iwl_supported_rate_to_ie(pos, active_rates,
1918 priv->active_rate_basic, &left);
1919 if (*pos > 0)
1920 len += 2 + *pos;
1921
1922 #ifdef CONFIG_IWLWIFI_HT
1923 if (is_direct && priv->is_ht_enabled) {
1924 u8 use_wide_chan = 1;
1925
1926 if (priv->channel_width != IWL_CHANNEL_WIDTH_40MHZ)
1927 use_wide_chan = 0;
1928 pos += (*pos) + 1;
1929 *pos++ = WLAN_EID_HT_CAPABILITY;
1930 *pos++ = sizeof(struct ieee80211_ht_capability);
1931 iwl_set_ht_capab(NULL, (struct ieee80211_ht_capability *)pos,
1932 use_wide_chan);
1933 len += 2 + sizeof(struct ieee80211_ht_capability);
1934 }
1935 #endif /*CONFIG_IWLWIFI_HT */
1936
1937 fill_end:
1938 return (u16)len;
1939 }
1940
1941 /*
1942 * QoS support
1943 */
1944 #ifdef CONFIG_IWLWIFI_QOS
1945 static int iwl_send_qos_params_command(struct iwl_priv *priv,
1946 struct iwl_qosparam_cmd *qos)
1947 {
1948
1949 return iwl_send_cmd_pdu(priv, REPLY_QOS_PARAM,
1950 sizeof(struct iwl_qosparam_cmd), qos);
1951 }
1952
1953 static void iwl_reset_qos(struct iwl_priv *priv)
1954 {
1955 u16 cw_min = 15;
1956 u16 cw_max = 1023;
1957 u8 aifs = 2;
1958 u8 is_legacy = 0;
1959 unsigned long flags;
1960 int i;
1961
1962 spin_lock_irqsave(&priv->lock, flags);
1963 priv->qos_data.qos_active = 0;
1964
1965 if (priv->iw_mode == IEEE80211_IF_TYPE_IBSS) {
1966 if (priv->qos_data.qos_enable)
1967 priv->qos_data.qos_active = 1;
1968 if (!(priv->active_rate & 0xfff0)) {
1969 cw_min = 31;
1970 is_legacy = 1;
1971 }
1972 } else if (priv->iw_mode == IEEE80211_IF_TYPE_AP) {
1973 if (priv->qos_data.qos_enable)
1974 priv->qos_data.qos_active = 1;
1975 } else if (!(priv->staging_rxon.flags & RXON_FLG_SHORT_SLOT_MSK)) {
1976 cw_min = 31;
1977 is_legacy = 1;
1978 }
1979
1980 if (priv->qos_data.qos_active)
1981 aifs = 3;
1982
1983 priv->qos_data.def_qos_parm.ac[0].cw_min = cpu_to_le16(cw_min);
1984 priv->qos_data.def_qos_parm.ac[0].cw_max = cpu_to_le16(cw_max);
1985 priv->qos_data.def_qos_parm.ac[0].aifsn = aifs;
1986 priv->qos_data.def_qos_parm.ac[0].edca_txop = 0;
1987 priv->qos_data.def_qos_parm.ac[0].reserved1 = 0;
1988
1989 if (priv->qos_data.qos_active) {
1990 i = 1;
1991 priv->qos_data.def_qos_parm.ac[i].cw_min = cpu_to_le16(cw_min);
1992 priv->qos_data.def_qos_parm.ac[i].cw_max = cpu_to_le16(cw_max);
1993 priv->qos_data.def_qos_parm.ac[i].aifsn = 7;
1994 priv->qos_data.def_qos_parm.ac[i].edca_txop = 0;
1995 priv->qos_data.def_qos_parm.ac[i].reserved1 = 0;
1996
1997 i = 2;
1998 priv->qos_data.def_qos_parm.ac[i].cw_min =
1999 cpu_to_le16((cw_min + 1) / 2 - 1);
2000 priv->qos_data.def_qos_parm.ac[i].cw_max =
2001 cpu_to_le16(cw_max);
2002 priv->qos_data.def_qos_parm.ac[i].aifsn = 2;
2003 if (is_legacy)
2004 priv->qos_data.def_qos_parm.ac[i].edca_txop =
2005 cpu_to_le16(6016);
2006 else
2007 priv->qos_data.def_qos_parm.ac[i].edca_txop =
2008 cpu_to_le16(3008);
2009 priv->qos_data.def_qos_parm.ac[i].reserved1 = 0;
2010
2011 i = 3;
2012 priv->qos_data.def_qos_parm.ac[i].cw_min =
2013 cpu_to_le16((cw_min + 1) / 4 - 1);
2014 priv->qos_data.def_qos_parm.ac[i].cw_max =
2015 cpu_to_le16((cw_max + 1) / 2 - 1);
2016 priv->qos_data.def_qos_parm.ac[i].aifsn = 2;
2017 priv->qos_data.def_qos_parm.ac[i].reserved1 = 0;
2018 if (is_legacy)
2019 priv->qos_data.def_qos_parm.ac[i].edca_txop =
2020 cpu_to_le16(3264);
2021 else
2022 priv->qos_data.def_qos_parm.ac[i].edca_txop =
2023 cpu_to_le16(1504);
2024 } else {
2025 for (i = 1; i < 4; i++) {
2026 priv->qos_data.def_qos_parm.ac[i].cw_min =
2027 cpu_to_le16(cw_min);
2028 priv->qos_data.def_qos_parm.ac[i].cw_max =
2029 cpu_to_le16(cw_max);
2030 priv->qos_data.def_qos_parm.ac[i].aifsn = aifs;
2031 priv->qos_data.def_qos_parm.ac[i].edca_txop = 0;
2032 priv->qos_data.def_qos_parm.ac[i].reserved1 = 0;
2033 }
2034 }
2035 IWL_DEBUG_QOS("set QoS to default \n");
2036
2037 spin_unlock_irqrestore(&priv->lock, flags);
2038 }
2039
2040 static void iwl_activate_qos(struct iwl_priv *priv, u8 force)
2041 {
2042 unsigned long flags;
2043
2044 if (priv == NULL)
2045 return;
2046
2047 if (test_bit(STATUS_EXIT_PENDING, &priv->status))
2048 return;
2049
2050 if (!priv->qos_data.qos_enable)
2051 return;
2052
2053 spin_lock_irqsave(&priv->lock, flags);
2054 priv->qos_data.def_qos_parm.qos_flags = 0;
2055
2056 if (priv->qos_data.qos_cap.q_AP.queue_request &&
2057 !priv->qos_data.qos_cap.q_AP.txop_request)
2058 priv->qos_data.def_qos_parm.qos_flags |=
2059 QOS_PARAM_FLG_TXOP_TYPE_MSK;
2060
2061 if (priv->qos_data.qos_active)
2062 priv->qos_data.def_qos_parm.qos_flags |=
2063 QOS_PARAM_FLG_UPDATE_EDCA_MSK;
2064
2065 spin_unlock_irqrestore(&priv->lock, flags);
2066
2067 if (force || iwl_is_associated(priv)) {
2068 IWL_DEBUG_QOS("send QoS cmd with Qos active %d \n",
2069 priv->qos_data.qos_active);
2070
2071 iwl_send_qos_params_command(priv,
2072 &(priv->qos_data.def_qos_parm));
2073 }
2074 }
2075
2076 #endif /* CONFIG_IWLWIFI_QOS */
2077 /*
2078 * Power management (not Tx power!) functions
2079 */
2080 #define MSEC_TO_USEC 1024
2081
2082 #define NOSLP __constant_cpu_to_le16(0), 0, 0
2083 #define SLP IWL_POWER_DRIVER_ALLOW_SLEEP_MSK, 0, 0
2084 #define SLP_TIMEOUT(T) __constant_cpu_to_le32((T) * MSEC_TO_USEC)
2085 #define SLP_VEC(X0, X1, X2, X3, X4) {__constant_cpu_to_le32(X0), \
2086 __constant_cpu_to_le32(X1), \
2087 __constant_cpu_to_le32(X2), \
2088 __constant_cpu_to_le32(X3), \
2089 __constant_cpu_to_le32(X4)}
2090
2091
2092 /* default power management (not Tx power) table values */
2093 /* for tim 0-10 */
2094 static struct iwl_power_vec_entry range_0[IWL_POWER_AC] = {
2095 {{NOSLP, SLP_TIMEOUT(0), SLP_TIMEOUT(0), SLP_VEC(0, 0, 0, 0, 0)}, 0},
2096 {{SLP, SLP_TIMEOUT(200), SLP_TIMEOUT(500), SLP_VEC(1, 2, 3, 4, 4)}, 0},
2097 {{SLP, SLP_TIMEOUT(200), SLP_TIMEOUT(300), SLP_VEC(2, 4, 6, 7, 7)}, 0},
2098 {{SLP, SLP_TIMEOUT(50), SLP_TIMEOUT(100), SLP_VEC(2, 6, 9, 9, 10)}, 0},
2099 {{SLP, SLP_TIMEOUT(50), SLP_TIMEOUT(25), SLP_VEC(2, 7, 9, 9, 10)}, 1},
2100 {{SLP, SLP_TIMEOUT(25), SLP_TIMEOUT(25), SLP_VEC(4, 7, 10, 10, 10)}, 1}
2101 };
2102
2103 /* for tim > 10 */
2104 static struct iwl_power_vec_entry range_1[IWL_POWER_AC] = {
2105 {{NOSLP, SLP_TIMEOUT(0), SLP_TIMEOUT(0), SLP_VEC(0, 0, 0, 0, 0)}, 0},
2106 {{SLP, SLP_TIMEOUT(200), SLP_TIMEOUT(500),
2107 SLP_VEC(1, 2, 3, 4, 0xFF)}, 0},
2108 {{SLP, SLP_TIMEOUT(200), SLP_TIMEOUT(300),
2109 SLP_VEC(2, 4, 6, 7, 0xFF)}, 0},
2110 {{SLP, SLP_TIMEOUT(50), SLP_TIMEOUT(100),
2111 SLP_VEC(2, 6, 9, 9, 0xFF)}, 0},
2112 {{SLP, SLP_TIMEOUT(50), SLP_TIMEOUT(25), SLP_VEC(2, 7, 9, 9, 0xFF)}, 0},
2113 {{SLP, SLP_TIMEOUT(25), SLP_TIMEOUT(25),
2114 SLP_VEC(4, 7, 10, 10, 0xFF)}, 0}
2115 };
2116
2117 int iwl_power_init_handle(struct iwl_priv *priv)
2118 {
2119 int rc = 0, i;
2120 struct iwl_power_mgr *pow_data;
2121 int size = sizeof(struct iwl_power_vec_entry) * IWL_POWER_AC;
2122 u16 pci_pm;
2123
2124 IWL_DEBUG_POWER("Initialize power \n");
2125
2126 pow_data = &(priv->power_data);
2127
2128 memset(pow_data, 0, sizeof(*pow_data));
2129
2130 pow_data->active_index = IWL_POWER_RANGE_0;
2131 pow_data->dtim_val = 0xffff;
2132
2133 memcpy(&pow_data->pwr_range_0[0], &range_0[0], size);
2134 memcpy(&pow_data->pwr_range_1[0], &range_1[0], size);
2135
2136 rc = pci_read_config_word(priv->pci_dev, PCI_LINK_CTRL, &pci_pm);
2137 if (rc != 0)
2138 return 0;
2139 else {
2140 struct iwl_powertable_cmd *cmd;
2141
2142 IWL_DEBUG_POWER("adjust power command flags\n");
2143
2144 for (i = 0; i < IWL_POWER_AC; i++) {
2145 cmd = &pow_data->pwr_range_0[i].cmd;
2146
2147 if (pci_pm & 0x1)
2148 cmd->flags &= ~IWL_POWER_PCI_PM_MSK;
2149 else
2150 cmd->flags |= IWL_POWER_PCI_PM_MSK;
2151 }
2152 }
2153 return rc;
2154 }
2155
2156 static int iwl_update_power_cmd(struct iwl_priv *priv,
2157 struct iwl_powertable_cmd *cmd, u32 mode)
2158 {
2159 int rc = 0, i;
2160 u8 skip;
2161 u32 max_sleep = 0;
2162 struct iwl_power_vec_entry *range;
2163 u8 period = 0;
2164 struct iwl_power_mgr *pow_data;
2165
2166 if (mode > IWL_POWER_INDEX_5) {
2167 IWL_DEBUG_POWER("Error invalid power mode \n");
2168 return -1;
2169 }
2170 pow_data = &(priv->power_data);
2171
2172 if (pow_data->active_index == IWL_POWER_RANGE_0)
2173 range = &pow_data->pwr_range_0[0];
2174 else
2175 range = &pow_data->pwr_range_1[1];
2176
2177 memcpy(cmd, &range[mode].cmd, sizeof(struct iwl_powertable_cmd));
2178
2179 #ifdef IWL_MAC80211_DISABLE
2180 if (priv->assoc_network != NULL) {
2181 unsigned long flags;
2182
2183 period = priv->assoc_network->tim.tim_period;
2184 }
2185 #endif /*IWL_MAC80211_DISABLE */
2186 skip = range[mode].no_dtim;
2187
2188 if (period == 0) {
2189 period = 1;
2190 skip = 0;
2191 }
2192
2193 if (skip == 0) {
2194 max_sleep = period;
2195 cmd->flags &= ~IWL_POWER_SLEEP_OVER_DTIM_MSK;
2196 } else {
2197 __le32 slp_itrvl = cmd->sleep_interval[IWL_POWER_VEC_SIZE - 1];
2198 max_sleep = (le32_to_cpu(slp_itrvl) / period) * period;
2199 cmd->flags |= IWL_POWER_SLEEP_OVER_DTIM_MSK;
2200 }
2201
2202 for (i = 0; i < IWL_POWER_VEC_SIZE; i++) {
2203 if (le32_to_cpu(cmd->sleep_interval[i]) > max_sleep)
2204 cmd->sleep_interval[i] = cpu_to_le32(max_sleep);
2205 }
2206
2207 IWL_DEBUG_POWER("Flags value = 0x%08X\n", cmd->flags);
2208 IWL_DEBUG_POWER("Tx timeout = %u\n", le32_to_cpu(cmd->tx_data_timeout));
2209 IWL_DEBUG_POWER("Rx timeout = %u\n", le32_to_cpu(cmd->rx_data_timeout));
2210 IWL_DEBUG_POWER("Sleep interval vector = { %d , %d , %d , %d , %d }\n",
2211 le32_to_cpu(cmd->sleep_interval[0]),
2212 le32_to_cpu(cmd->sleep_interval[1]),
2213 le32_to_cpu(cmd->sleep_interval[2]),
2214 le32_to_cpu(cmd->sleep_interval[3]),
2215 le32_to_cpu(cmd->sleep_interval[4]));
2216
2217 return rc;
2218 }
2219
2220 static int iwl_send_power_mode(struct iwl_priv *priv, u32 mode)
2221 {
2222 u32 final_mode = mode;
2223 int rc;
2224 struct iwl_powertable_cmd cmd;
2225
2226 /* If on battery, set to 3,
2227 * if plugged into AC power, set to CAM ("continuosly aware mode"),
2228 * else user level */
2229 switch (mode) {
2230 case IWL_POWER_BATTERY:
2231 final_mode = IWL_POWER_INDEX_3;
2232 break;
2233 case IWL_POWER_AC:
2234 final_mode = IWL_POWER_MODE_CAM;
2235 break;
2236 default:
2237 final_mode = mode;
2238 break;
2239 }
2240
2241 cmd.keep_alive_beacons = 0;
2242
2243 iwl_update_power_cmd(priv, &cmd, final_mode);
2244
2245 rc = iwl_send_cmd_pdu(priv, POWER_TABLE_CMD, sizeof(cmd), &cmd);
2246
2247 if (final_mode == IWL_POWER_MODE_CAM)
2248 clear_bit(STATUS_POWER_PMI, &priv->status);
2249 else
2250 set_bit(STATUS_POWER_PMI, &priv->status);
2251
2252 return rc;
2253 }
2254
2255 int iwl_is_network_packet(struct iwl_priv *priv, struct ieee80211_hdr *header)
2256 {
2257 /* Filter incoming packets to determine if they are targeted toward
2258 * this network, discarding packets coming from ourselves */
2259 switch (priv->iw_mode) {
2260 case IEEE80211_IF_TYPE_IBSS: /* Header: Dest. | Source | BSSID */
2261 /* packets from our adapter are dropped (echo) */
2262 if (!compare_ether_addr(header->addr2, priv->mac_addr))
2263 return 0;
2264 /* {broad,multi}cast packets to our IBSS go through */
2265 if (is_multicast_ether_addr(header->addr1))
2266 return !compare_ether_addr(header->addr3, priv->bssid);
2267 /* packets to our adapter go through */
2268 return !compare_ether_addr(header->addr1, priv->mac_addr);
2269 case IEEE80211_IF_TYPE_STA: /* Header: Dest. | AP{BSSID} | Source */
2270 /* packets from our adapter are dropped (echo) */
2271 if (!compare_ether_addr(header->addr3, priv->mac_addr))
2272 return 0;
2273 /* {broad,multi}cast packets to our BSS go through */
2274 if (is_multicast_ether_addr(header->addr1))
2275 return !compare_ether_addr(header->addr2, priv->bssid);
2276 /* packets to our adapter go through */
2277 return !compare_ether_addr(header->addr1, priv->mac_addr);
2278 }
2279
2280 return 1;
2281 }
2282
2283 #define TX_STATUS_ENTRY(x) case TX_STATUS_FAIL_ ## x: return #x
2284
2285 const char *iwl_get_tx_fail_reason(u32 status)
2286 {
2287 switch (status & TX_STATUS_MSK) {
2288 case TX_STATUS_SUCCESS:
2289 return "SUCCESS";
2290 TX_STATUS_ENTRY(SHORT_LIMIT);
2291 TX_STATUS_ENTRY(LONG_LIMIT);
2292 TX_STATUS_ENTRY(FIFO_UNDERRUN);
2293 TX_STATUS_ENTRY(MGMNT_ABORT);
2294 TX_STATUS_ENTRY(NEXT_FRAG);
2295 TX_STATUS_ENTRY(LIFE_EXPIRE);
2296 TX_STATUS_ENTRY(DEST_PS);
2297 TX_STATUS_ENTRY(ABORTED);
2298 TX_STATUS_ENTRY(BT_RETRY);
2299 TX_STATUS_ENTRY(STA_INVALID);
2300 TX_STATUS_ENTRY(FRAG_DROPPED);
2301 TX_STATUS_ENTRY(TID_DISABLE);
2302 TX_STATUS_ENTRY(FRAME_FLUSHED);
2303 TX_STATUS_ENTRY(INSUFFICIENT_CF_POLL);
2304 TX_STATUS_ENTRY(TX_LOCKED);
2305 TX_STATUS_ENTRY(NO_BEACON_ON_RADAR);
2306 }
2307
2308 return "UNKNOWN";
2309 }
2310
2311 /**
2312 * iwl_scan_cancel - Cancel any currently executing HW scan
2313 *
2314 * NOTE: priv->mutex is not required before calling this function
2315 */
2316 static int iwl_scan_cancel(struct iwl_priv *priv)
2317 {
2318 if (!test_bit(STATUS_SCAN_HW, &priv->status)) {
2319 clear_bit(STATUS_SCANNING, &priv->status);
2320 return 0;
2321 }
2322
2323 if (test_bit(STATUS_SCANNING, &priv->status)) {
2324 if (!test_bit(STATUS_SCAN_ABORTING, &priv->status)) {
2325 IWL_DEBUG_SCAN("Queuing scan abort.\n");
2326 set_bit(STATUS_SCAN_ABORTING, &priv->status);
2327 queue_work(priv->workqueue, &priv->abort_scan);
2328
2329 } else
2330 IWL_DEBUG_SCAN("Scan abort already in progress.\n");
2331
2332 return test_bit(STATUS_SCANNING, &priv->status);
2333 }
2334
2335 return 0;
2336 }
2337
2338 /**
2339 * iwl_scan_cancel_timeout - Cancel any currently executing HW scan
2340 * @ms: amount of time to wait (in milliseconds) for scan to abort
2341 *
2342 * NOTE: priv->mutex must be held before calling this function
2343 */
2344 static int iwl_scan_cancel_timeout(struct iwl_priv *priv, unsigned long ms)
2345 {
2346 unsigned long now = jiffies;
2347 int ret;
2348
2349 ret = iwl_scan_cancel(priv);
2350 if (ret && ms) {
2351 mutex_unlock(&priv->mutex);
2352 while (!time_after(jiffies, now + msecs_to_jiffies(ms)) &&
2353 test_bit(STATUS_SCANNING, &priv->status))
2354 msleep(1);
2355 mutex_lock(&priv->mutex);
2356
2357 return test_bit(STATUS_SCANNING, &priv->status);
2358 }
2359
2360 return ret;
2361 }
2362
2363 static void iwl_sequence_reset(struct iwl_priv *priv)
2364 {
2365 /* Reset ieee stats */
2366
2367 /* We don't reset the net_device_stats (ieee->stats) on
2368 * re-association */
2369
2370 priv->last_seq_num = -1;
2371 priv->last_frag_num = -1;
2372 priv->last_packet_time = 0;
2373
2374 iwl_scan_cancel(priv);
2375 }
2376
2377 #define MAX_UCODE_BEACON_INTERVAL 4096
2378 #define INTEL_CONN_LISTEN_INTERVAL __constant_cpu_to_le16(0xA)
2379
2380 static __le16 iwl_adjust_beacon_interval(u16 beacon_val)
2381 {
2382 u16 new_val = 0;
2383 u16 beacon_factor = 0;
2384
2385 beacon_factor =
2386 (beacon_val + MAX_UCODE_BEACON_INTERVAL)
2387 / MAX_UCODE_BEACON_INTERVAL;
2388 new_val = beacon_val / beacon_factor;
2389
2390 return cpu_to_le16(new_val);
2391 }
2392
2393 static void iwl_setup_rxon_timing(struct iwl_priv *priv)
2394 {
2395 u64 interval_tm_unit;
2396 u64 tsf, result;
2397 unsigned long flags;
2398 struct ieee80211_conf *conf = NULL;
2399 u16 beacon_int = 0;
2400
2401 conf = ieee80211_get_hw_conf(priv->hw);
2402
2403 spin_lock_irqsave(&priv->lock, flags);
2404 priv->rxon_timing.timestamp.dw[1] = cpu_to_le32(priv->timestamp1);
2405 priv->rxon_timing.timestamp.dw[0] = cpu_to_le32(priv->timestamp0);
2406
2407 priv->rxon_timing.listen_interval = INTEL_CONN_LISTEN_INTERVAL;
2408
2409 tsf = priv->timestamp1;
2410 tsf = ((tsf << 32) | priv->timestamp0);
2411
2412 beacon_int = priv->beacon_int;
2413 spin_unlock_irqrestore(&priv->lock, flags);
2414
2415 if (priv->iw_mode == IEEE80211_IF_TYPE_STA) {
2416 if (beacon_int == 0) {
2417 priv->rxon_timing.beacon_interval = cpu_to_le16(100);
2418 priv->rxon_timing.beacon_init_val = cpu_to_le32(102400);
2419 } else {
2420 priv->rxon_timing.beacon_interval =
2421 cpu_to_le16(beacon_int);
2422 priv->rxon_timing.beacon_interval =
2423 iwl_adjust_beacon_interval(
2424 le16_to_cpu(priv->rxon_timing.beacon_interval));
2425 }
2426
2427 priv->rxon_timing.atim_window = 0;
2428 } else {
2429 priv->rxon_timing.beacon_interval =
2430 iwl_adjust_beacon_interval(conf->beacon_int);
2431 /* TODO: we need to get atim_window from upper stack
2432 * for now we set to 0 */
2433 priv->rxon_timing.atim_window = 0;
2434 }
2435
2436 interval_tm_unit =
2437 (le16_to_cpu(priv->rxon_timing.beacon_interval) * 1024);
2438 result = do_div(tsf, interval_tm_unit);
2439 priv->rxon_timing.beacon_init_val =
2440 cpu_to_le32((u32) ((u64) interval_tm_unit - result));
2441
2442 IWL_DEBUG_ASSOC
2443 ("beacon interval %d beacon timer %d beacon tim %d\n",
2444 le16_to_cpu(priv->rxon_timing.beacon_interval),
2445 le32_to_cpu(priv->rxon_timing.beacon_init_val),
2446 le16_to_cpu(priv->rxon_timing.atim_window));
2447 }
2448
2449 static int iwl_scan_initiate(struct iwl_priv *priv)
2450 {
2451 if (priv->iw_mode == IEEE80211_IF_TYPE_AP) {
2452 IWL_ERROR("APs don't scan.\n");
2453 return 0;
2454 }
2455
2456 if (!iwl_is_ready_rf(priv)) {
2457 IWL_DEBUG_SCAN("Aborting scan due to not ready.\n");
2458 return -EIO;
2459 }
2460
2461 if (test_bit(STATUS_SCANNING, &priv->status)) {
2462 IWL_DEBUG_SCAN("Scan already in progress.\n");
2463 return -EAGAIN;
2464 }
2465
2466 if (test_bit(STATUS_SCAN_ABORTING, &priv->status)) {
2467 IWL_DEBUG_SCAN("Scan request while abort pending. "
2468 "Queuing.\n");
2469 return -EAGAIN;
2470 }
2471
2472 IWL_DEBUG_INFO("Starting scan...\n");
2473 priv->scan_bands = 2;
2474 set_bit(STATUS_SCANNING, &priv->status);
2475 priv->scan_start = jiffies;
2476 priv->scan_pass_start = priv->scan_start;
2477
2478 queue_work(priv->workqueue, &priv->request_scan);
2479
2480 return 0;
2481 }
2482
2483 static int iwl_set_rxon_hwcrypto(struct iwl_priv *priv, int hw_decrypt)
2484 {
2485 struct iwl_rxon_cmd *rxon = &priv->staging_rxon;
2486
2487 if (hw_decrypt)
2488 rxon->filter_flags &= ~RXON_FILTER_DIS_DECRYPT_MSK;
2489 else
2490 rxon->filter_flags |= RXON_FILTER_DIS_DECRYPT_MSK;
2491
2492 return 0;
2493 }
2494
2495 static void iwl_set_flags_for_phymode(struct iwl_priv *priv, u8 phymode)
2496 {
2497 if (phymode == MODE_IEEE80211A) {
2498 priv->staging_rxon.flags &=
2499 ~(RXON_FLG_BAND_24G_MSK | RXON_FLG_AUTO_DETECT_MSK
2500 | RXON_FLG_CCK_MSK);
2501 priv->staging_rxon.flags |= RXON_FLG_SHORT_SLOT_MSK;
2502 } else {
2503 /* Copied from iwl_bg_post_associate() */
2504 if (priv->assoc_capability & WLAN_CAPABILITY_SHORT_SLOT_TIME)
2505 priv->staging_rxon.flags |= RXON_FLG_SHORT_SLOT_MSK;
2506 else
2507 priv->staging_rxon.flags &= ~RXON_FLG_SHORT_SLOT_MSK;
2508
2509 if (priv->iw_mode == IEEE80211_IF_TYPE_IBSS)
2510 priv->staging_rxon.flags &= ~RXON_FLG_SHORT_SLOT_MSK;
2511
2512 priv->staging_rxon.flags |= RXON_FLG_BAND_24G_MSK;
2513 priv->staging_rxon.flags |= RXON_FLG_AUTO_DETECT_MSK;
2514 priv->staging_rxon.flags &= ~RXON_FLG_CCK_MSK;
2515 }
2516 }
2517
2518 /*
2519 * initilize rxon structure with default values fromm eeprom
2520 */
2521 static void iwl_connection_init_rx_config(struct iwl_priv *priv)
2522 {
2523 const struct iwl_channel_info *ch_info;
2524
2525 memset(&priv->staging_rxon, 0, sizeof(priv->staging_rxon));
2526
2527 switch (priv->iw_mode) {
2528 case IEEE80211_IF_TYPE_AP:
2529 priv->staging_rxon.dev_type = RXON_DEV_TYPE_AP;
2530 break;
2531
2532 case IEEE80211_IF_TYPE_STA:
2533 priv->staging_rxon.dev_type = RXON_DEV_TYPE_ESS;
2534 priv->staging_rxon.filter_flags = RXON_FILTER_ACCEPT_GRP_MSK;
2535 break;
2536
2537 case IEEE80211_IF_TYPE_IBSS:
2538 priv->staging_rxon.dev_type = RXON_DEV_TYPE_IBSS;
2539 priv->staging_rxon.flags = RXON_FLG_SHORT_PREAMBLE_MSK;
2540 priv->staging_rxon.filter_flags = RXON_FILTER_BCON_AWARE_MSK |
2541 RXON_FILTER_ACCEPT_GRP_MSK;
2542 break;
2543
2544 case IEEE80211_IF_TYPE_MNTR:
2545 priv->staging_rxon.dev_type = RXON_DEV_TYPE_SNIFFER;
2546 priv->staging_rxon.filter_flags = RXON_FILTER_PROMISC_MSK |
2547 RXON_FILTER_CTL2HOST_MSK | RXON_FILTER_ACCEPT_GRP_MSK;
2548 break;
2549 }
2550
2551 #if 0
2552 /* TODO: Figure out when short_preamble would be set and cache from
2553 * that */
2554 if (!hw_to_local(priv->hw)->short_preamble)
2555 priv->staging_rxon.flags &= ~RXON_FLG_SHORT_PREAMBLE_MSK;
2556 else
2557 priv->staging_rxon.flags |= RXON_FLG_SHORT_PREAMBLE_MSK;
2558 #endif
2559
2560 ch_info = iwl_get_channel_info(priv, priv->phymode,
2561 le16_to_cpu(priv->staging_rxon.channel));
2562
2563 if (!ch_info)
2564 ch_info = &priv->channel_info[0];
2565
2566 /*
2567 * in some case A channels are all non IBSS
2568 * in this case force B/G channel
2569 */
2570 if ((priv->iw_mode == IEEE80211_IF_TYPE_IBSS) &&
2571 !(is_channel_ibss(ch_info)))
2572 ch_info = &priv->channel_info[0];
2573
2574 priv->staging_rxon.channel = cpu_to_le16(ch_info->channel);
2575 if (is_channel_a_band(ch_info))
2576 priv->phymode = MODE_IEEE80211A;
2577 else
2578 priv->phymode = MODE_IEEE80211G;
2579
2580 iwl_set_flags_for_phymode(priv, priv->phymode);
2581
2582 priv->staging_rxon.ofdm_basic_rates =
2583 (IWL_OFDM_RATES_MASK >> IWL_FIRST_OFDM_RATE) & 0xFF;
2584 priv->staging_rxon.cck_basic_rates =
2585 (IWL_CCK_RATES_MASK >> IWL_FIRST_CCK_RATE) & 0xF;
2586
2587 priv->staging_rxon.flags &= ~(RXON_FLG_CHANNEL_MODE_MIXED_MSK |
2588 RXON_FLG_CHANNEL_MODE_PURE_40_MSK);
2589 memcpy(priv->staging_rxon.node_addr, priv->mac_addr, ETH_ALEN);
2590 memcpy(priv->staging_rxon.wlap_bssid_addr, priv->mac_addr, ETH_ALEN);
2591 priv->staging_rxon.ofdm_ht_single_stream_basic_rates = 0xff;
2592 priv->staging_rxon.ofdm_ht_dual_stream_basic_rates = 0xff;
2593 iwl4965_set_rxon_chain(priv);
2594 }
2595
2596 static int iwl_set_mode(struct iwl_priv *priv, int mode)
2597 {
2598 if (!iwl_is_ready_rf(priv))
2599 return -EAGAIN;
2600
2601 if (mode == IEEE80211_IF_TYPE_IBSS) {
2602 const struct iwl_channel_info *ch_info;
2603
2604 ch_info = iwl_get_channel_info(priv,
2605 priv->phymode,
2606 le16_to_cpu(priv->staging_rxon.channel));
2607
2608 if (!ch_info || !is_channel_ibss(ch_info)) {
2609 IWL_ERROR("channel %d not IBSS channel\n",
2610 le16_to_cpu(priv->staging_rxon.channel));
2611 return -EINVAL;
2612 }
2613 }
2614
2615 cancel_delayed_work(&priv->scan_check);
2616 if (iwl_scan_cancel_timeout(priv, 100)) {
2617 IWL_WARNING("Aborted scan still in progress after 100ms\n");
2618 IWL_DEBUG_MAC80211("leaving - scan abort failed.\n");
2619 return -EAGAIN;
2620 }
2621
2622 priv->iw_mode = mode;
2623
2624 iwl_connection_init_rx_config(priv);
2625 memcpy(priv->staging_rxon.node_addr, priv->mac_addr, ETH_ALEN);
2626
2627 iwl_clear_stations_table(priv);
2628
2629 iwl_commit_rxon(priv);
2630
2631 return 0;
2632 }
2633
2634 static void iwl_build_tx_cmd_hwcrypto(struct iwl_priv *priv,
2635 struct ieee80211_tx_control *ctl,
2636 struct iwl_cmd *cmd,
2637 struct sk_buff *skb_frag,
2638 int last_frag)
2639 {
2640 struct iwl_hw_key *keyinfo = &priv->stations[ctl->key_idx].keyinfo;
2641
2642 switch (keyinfo->alg) {
2643 case ALG_CCMP:
2644 cmd->cmd.tx.sec_ctl = TX_CMD_SEC_CCM;
2645 memcpy(cmd->cmd.tx.key, keyinfo->key, keyinfo->keylen);
2646 IWL_DEBUG_TX("tx_cmd with aes hwcrypto\n");
2647 break;
2648
2649 case ALG_TKIP:
2650 #if 0
2651 cmd->cmd.tx.sec_ctl = TX_CMD_SEC_TKIP;
2652
2653 if (last_frag)
2654 memcpy(cmd->cmd.tx.tkip_mic.byte, skb_frag->tail - 8,
2655 8);
2656 else
2657 memset(cmd->cmd.tx.tkip_mic.byte, 0, 8);
2658 #endif
2659 break;
2660
2661 case ALG_WEP:
2662 cmd->cmd.tx.sec_ctl = TX_CMD_SEC_WEP |
2663 (ctl->key_idx & TX_CMD_SEC_MSK) << TX_CMD_SEC_SHIFT;
2664
2665 if (keyinfo->keylen == 13)
2666 cmd->cmd.tx.sec_ctl |= TX_CMD_SEC_KEY128;
2667
2668 memcpy(&cmd->cmd.tx.key[3], keyinfo->key, keyinfo->keylen);
2669
2670 IWL_DEBUG_TX("Configuring packet for WEP encryption "
2671 "with key %d\n", ctl->key_idx);
2672 break;
2673
2674 default:
2675 printk(KERN_ERR "Unknown encode alg %d\n", keyinfo->alg);
2676 break;
2677 }
2678 }
2679
2680 /*
2681 * handle build REPLY_TX command notification.
2682 */
2683 static void iwl_build_tx_cmd_basic(struct iwl_priv *priv,
2684 struct iwl_cmd *cmd,
2685 struct ieee80211_tx_control *ctrl,
2686 struct ieee80211_hdr *hdr,
2687 int is_unicast, u8 std_id)
2688 {
2689 __le16 *qc;
2690 u16 fc = le16_to_cpu(hdr->frame_control);
2691 __le32 tx_flags = cmd->cmd.tx.tx_flags;
2692
2693 cmd->cmd.tx.stop_time.life_time = TX_CMD_LIFE_TIME_INFINITE;
2694 if (!(ctrl->flags & IEEE80211_TXCTL_NO_ACK)) {
2695 tx_flags |= TX_CMD_FLG_ACK_MSK;
2696 if ((fc & IEEE80211_FCTL_FTYPE) == IEEE80211_FTYPE_MGMT)
2697 tx_flags |= TX_CMD_FLG_SEQ_CTL_MSK;
2698 if (ieee80211_is_probe_response(fc) &&
2699 !(le16_to_cpu(hdr->seq_ctrl) & 0xf))
2700 tx_flags |= TX_CMD_FLG_TSF_MSK;
2701 } else {
2702 tx_flags &= (~TX_CMD_FLG_ACK_MSK);
2703 tx_flags |= TX_CMD_FLG_SEQ_CTL_MSK;
2704 }
2705
2706 cmd->cmd.tx.sta_id = std_id;
2707 if (ieee80211_get_morefrag(hdr))
2708 tx_flags |= TX_CMD_FLG_MORE_FRAG_MSK;
2709
2710 qc = ieee80211_get_qos_ctrl(hdr);
2711 if (qc) {
2712 cmd->cmd.tx.tid_tspec = (u8) (le16_to_cpu(*qc) & 0xf);
2713 tx_flags &= ~TX_CMD_FLG_SEQ_CTL_MSK;
2714 } else
2715 tx_flags |= TX_CMD_FLG_SEQ_CTL_MSK;
2716
2717 if (ctrl->flags & IEEE80211_TXCTL_USE_RTS_CTS) {
2718 tx_flags |= TX_CMD_FLG_RTS_MSK;
2719 tx_flags &= ~TX_CMD_FLG_CTS_MSK;
2720 } else if (ctrl->flags & IEEE80211_TXCTL_USE_CTS_PROTECT) {
2721 tx_flags &= ~TX_CMD_FLG_RTS_MSK;
2722 tx_flags |= TX_CMD_FLG_CTS_MSK;
2723 }
2724
2725 if ((tx_flags & TX_CMD_FLG_RTS_MSK) || (tx_flags & TX_CMD_FLG_CTS_MSK))
2726 tx_flags |= TX_CMD_FLG_FULL_TXOP_PROT_MSK;
2727
2728 tx_flags &= ~(TX_CMD_FLG_ANT_SEL_MSK);
2729 if ((fc & IEEE80211_FCTL_FTYPE) == IEEE80211_FTYPE_MGMT) {
2730 if ((fc & IEEE80211_FCTL_STYPE) == IEEE80211_STYPE_ASSOC_REQ ||
2731 (fc & IEEE80211_FCTL_STYPE) == IEEE80211_STYPE_REASSOC_REQ)
2732 cmd->cmd.tx.timeout.pm_frame_timeout =
2733 cpu_to_le16(3);
2734 else
2735 cmd->cmd.tx.timeout.pm_frame_timeout =
2736 cpu_to_le16(2);
2737 } else
2738 cmd->cmd.tx.timeout.pm_frame_timeout = 0;
2739
2740 cmd->cmd.tx.driver_txop = 0;
2741 cmd->cmd.tx.tx_flags = tx_flags;
2742 cmd->cmd.tx.next_frame_len = 0;
2743 }
2744
2745 static int iwl_get_sta_id(struct iwl_priv *priv, struct ieee80211_hdr *hdr)
2746 {
2747 int sta_id;
2748 u16 fc = le16_to_cpu(hdr->frame_control);
2749 DECLARE_MAC_BUF(mac);
2750
2751 /* If this frame is broadcast or not data then use the broadcast
2752 * station id */
2753 if (((fc & IEEE80211_FCTL_FTYPE) != IEEE80211_FTYPE_DATA) ||
2754 is_multicast_ether_addr(hdr->addr1))
2755 return priv->hw_setting.bcast_sta_id;
2756
2757 switch (priv->iw_mode) {
2758
2759 /* If this frame is part of a BSS network (we're a station), then
2760 * we use the AP's station id */
2761 case IEEE80211_IF_TYPE_STA:
2762 return IWL_AP_ID;
2763
2764 /* If we are an AP, then find the station, or use BCAST */
2765 case IEEE80211_IF_TYPE_AP:
2766 sta_id = iwl_hw_find_station(priv, hdr->addr1);
2767 if (sta_id != IWL_INVALID_STATION)
2768 return sta_id;
2769 return priv->hw_setting.bcast_sta_id;
2770
2771 /* If this frame is part of a IBSS network, then we use the
2772 * target specific station id */
2773 case IEEE80211_IF_TYPE_IBSS:
2774 sta_id = iwl_hw_find_station(priv, hdr->addr1);
2775 if (sta_id != IWL_INVALID_STATION)
2776 return sta_id;
2777
2778 sta_id = iwl_add_station(priv, hdr->addr1, 0, CMD_ASYNC);
2779
2780 if (sta_id != IWL_INVALID_STATION)
2781 return sta_id;
2782
2783 IWL_DEBUG_DROP("Station %s not in station map. "
2784 "Defaulting to broadcast...\n",
2785 print_mac(mac, hdr->addr1));
2786 iwl_print_hex_dump(IWL_DL_DROP, (u8 *) hdr, sizeof(*hdr));
2787 return priv->hw_setting.bcast_sta_id;
2788
2789 default:
2790 IWL_WARNING("Unkown mode of operation: %d", priv->iw_mode);
2791 return priv->hw_setting.bcast_sta_id;
2792 }
2793 }
2794
2795 /*
2796 * start REPLY_TX command process
2797 */
2798 static int iwl_tx_skb(struct iwl_priv *priv,
2799 struct sk_buff *skb, struct ieee80211_tx_control *ctl)
2800 {
2801 struct ieee80211_hdr *hdr = (struct ieee80211_hdr *)skb->data;
2802 struct iwl_tfd_frame *tfd;
2803 u32 *control_flags;
2804 int txq_id = ctl->queue;
2805 struct iwl_tx_queue *txq = NULL;
2806 struct iwl_queue *q = NULL;
2807 dma_addr_t phys_addr;
2808 dma_addr_t txcmd_phys;
2809 struct iwl_cmd *out_cmd = NULL;
2810 u16 len, idx, len_org;
2811 u8 id, hdr_len, unicast;
2812 u8 sta_id;
2813 u16 seq_number = 0;
2814 u16 fc;
2815 __le16 *qc;
2816 u8 wait_write_ptr = 0;
2817 unsigned long flags;
2818 int rc;
2819
2820 spin_lock_irqsave(&priv->lock, flags);
2821 if (iwl_is_rfkill(priv)) {
2822 IWL_DEBUG_DROP("Dropping - RF KILL\n");
2823 goto drop_unlock;
2824 }
2825
2826 if (!priv->interface_id) {
2827 IWL_DEBUG_DROP("Dropping - !priv->interface_id\n");
2828 goto drop_unlock;
2829 }
2830
2831 if ((ctl->tx_rate & 0xFF) == IWL_INVALID_RATE) {
2832 IWL_ERROR("ERROR: No TX rate available.\n");
2833 goto drop_unlock;
2834 }
2835
2836 unicast = !is_multicast_ether_addr(hdr->addr1);
2837 id = 0;
2838
2839 fc = le16_to_cpu(hdr->frame_control);
2840
2841 #ifdef CONFIG_IWLWIFI_DEBUG
2842 if (ieee80211_is_auth(fc))
2843 IWL_DEBUG_TX("Sending AUTH frame\n");
2844 else if (ieee80211_is_assoc_request(fc))
2845 IWL_DEBUG_TX("Sending ASSOC frame\n");
2846 else if (ieee80211_is_reassoc_request(fc))
2847 IWL_DEBUG_TX("Sending REASSOC frame\n");
2848 #endif
2849
2850 if (!iwl_is_associated(priv) &&
2851 ((fc & IEEE80211_FCTL_FTYPE) == IEEE80211_FTYPE_DATA)) {
2852 IWL_DEBUG_DROP("Dropping - !iwl_is_associated\n");
2853 goto drop_unlock;
2854 }
2855
2856 spin_unlock_irqrestore(&priv->lock, flags);
2857
2858 hdr_len = ieee80211_get_hdrlen(fc);
2859 sta_id = iwl_get_sta_id(priv, hdr);
2860 if (sta_id == IWL_INVALID_STATION) {
2861 DECLARE_MAC_BUF(mac);
2862
2863 IWL_DEBUG_DROP("Dropping - INVALID STATION: %s\n",
2864 print_mac(mac, hdr->addr1));
2865 goto drop;
2866 }
2867
2868 IWL_DEBUG_RATE("station Id %d\n", sta_id);
2869
2870 qc = ieee80211_get_qos_ctrl(hdr);
2871 if (qc) {
2872 u8 tid = (u8)(le16_to_cpu(*qc) & 0xf);
2873 seq_number = priv->stations[sta_id].tid[tid].seq_number &
2874 IEEE80211_SCTL_SEQ;
2875 hdr->seq_ctrl = cpu_to_le16(seq_number) |
2876 (hdr->seq_ctrl &
2877 __constant_cpu_to_le16(IEEE80211_SCTL_FRAG));
2878 seq_number += 0x10;
2879 #ifdef CONFIG_IWLWIFI_HT
2880 #ifdef CONFIG_IWLWIFI_HT_AGG
2881 /* aggregation is on for this <sta,tid> */
2882 if (ctl->flags & IEEE80211_TXCTL_HT_MPDU_AGG)
2883 txq_id = priv->stations[sta_id].tid[tid].agg.txq_id;
2884 #endif /* CONFIG_IWLWIFI_HT_AGG */
2885 #endif /* CONFIG_IWLWIFI_HT */
2886 }
2887 txq = &priv->txq[txq_id];
2888 q = &txq->q;
2889
2890 spin_lock_irqsave(&priv->lock, flags);
2891
2892 tfd = &txq->bd[q->first_empty];
2893 memset(tfd, 0, sizeof(*tfd));
2894 control_flags = (u32 *) tfd;
2895 idx = get_cmd_index(q, q->first_empty, 0);
2896
2897 memset(&(txq->txb[q->first_empty]), 0, sizeof(struct iwl_tx_info));
2898 txq->txb[q->first_empty].skb[0] = skb;
2899 memcpy(&(txq->txb[q->first_empty].status.control),
2900 ctl, sizeof(struct ieee80211_tx_control));
2901 out_cmd = &txq->cmd[idx];
2902 memset(&out_cmd->hdr, 0, sizeof(out_cmd->hdr));
2903 memset(&out_cmd->cmd.tx, 0, sizeof(out_cmd->cmd.tx));
2904 out_cmd->hdr.cmd = REPLY_TX;
2905 out_cmd->hdr.sequence = cpu_to_le16((u16)(QUEUE_TO_SEQ(txq_id) |
2906 INDEX_TO_SEQ(q->first_empty)));
2907 /* copy frags header */
2908 memcpy(out_cmd->cmd.tx.hdr, hdr, hdr_len);
2909
2910 /* hdr = (struct ieee80211_hdr *)out_cmd->cmd.tx.hdr; */
2911 len = priv->hw_setting.tx_cmd_len +
2912 sizeof(struct iwl_cmd_header) + hdr_len;
2913
2914 len_org = len;
2915 len = (len + 3) & ~3;
2916
2917 if (len_org != len)
2918 len_org = 1;
2919 else
2920 len_org = 0;
2921
2922 txcmd_phys = txq->dma_addr_cmd + sizeof(struct iwl_cmd) * idx +
2923 offsetof(struct iwl_cmd, hdr);
2924
2925 iwl_hw_txq_attach_buf_to_tfd(priv, tfd, txcmd_phys, len);
2926
2927 if (!(ctl->flags & IEEE80211_TXCTL_DO_NOT_ENCRYPT))
2928 iwl_build_tx_cmd_hwcrypto(priv, ctl, out_cmd, skb, 0);
2929
2930 /* 802.11 null functions have no payload... */
2931 len = skb->len - hdr_len;
2932 if (len) {
2933 phys_addr = pci_map_single(priv->pci_dev, skb->data + hdr_len,
2934 len, PCI_DMA_TODEVICE);
2935 iwl_hw_txq_attach_buf_to_tfd(priv, tfd, phys_addr, len);
2936 }
2937
2938 if (len_org)
2939 out_cmd->cmd.tx.tx_flags |= TX_CMD_FLG_MH_PAD_MSK;
2940
2941 len = (u16)skb->len;
2942 out_cmd->cmd.tx.len = cpu_to_le16(len);
2943
2944 /* TODO need this for burst mode later on */
2945 iwl_build_tx_cmd_basic(priv, out_cmd, ctl, hdr, unicast, sta_id);
2946
2947 /* set is_hcca to 0; it probably will never be implemented */
2948 iwl_hw_build_tx_cmd_rate(priv, out_cmd, ctl, hdr, sta_id, 0);
2949
2950 iwl4965_tx_cmd(priv, out_cmd, sta_id, txcmd_phys,
2951 hdr, hdr_len, ctl, NULL);
2952
2953 if (!ieee80211_get_morefrag(hdr)) {
2954 txq->need_update = 1;
2955 if (qc) {
2956 u8 tid = (u8)(le16_to_cpu(*qc) & 0xf);
2957 priv->stations[sta_id].tid[tid].seq_number = seq_number;
2958 }
2959 } else {
2960 wait_write_ptr = 1;
2961 txq->need_update = 0;
2962 }
2963
2964 iwl_print_hex_dump(IWL_DL_TX, out_cmd->cmd.payload,
2965 sizeof(out_cmd->cmd.tx));
2966
2967 iwl_print_hex_dump(IWL_DL_TX, (u8 *)out_cmd->cmd.tx.hdr,
2968 ieee80211_get_hdrlen(fc));
2969
2970 iwl4965_tx_queue_update_wr_ptr(priv, txq, len);
2971
2972 q->first_empty = iwl_queue_inc_wrap(q->first_empty, q->n_bd);
2973 rc = iwl_tx_queue_update_write_ptr(priv, txq);
2974 spin_unlock_irqrestore(&priv->lock, flags);
2975
2976 if (rc)
2977 return rc;
2978
2979 if ((iwl_queue_space(q) < q->high_mark)
2980 && priv->mac80211_registered) {
2981 if (wait_write_ptr) {
2982 spin_lock_irqsave(&priv->lock, flags);
2983 txq->need_update = 1;
2984 iwl_tx_queue_update_write_ptr(priv, txq);
2985 spin_unlock_irqrestore(&priv->lock, flags);
2986 }
2987
2988 ieee80211_stop_queue(priv->hw, ctl->queue);
2989 }
2990
2991 return 0;
2992
2993 drop_unlock:
2994 spin_unlock_irqrestore(&priv->lock, flags);
2995 drop:
2996 return -1;
2997 }
2998
2999 static void iwl_set_rate(struct iwl_priv *priv)
3000 {
3001 const struct ieee80211_hw_mode *hw = NULL;
3002 struct ieee80211_rate *rate;
3003 int i;
3004
3005 hw = iwl_get_hw_mode(priv, priv->phymode);
3006
3007 priv->active_rate = 0;
3008 priv->active_rate_basic = 0;
3009
3010 IWL_DEBUG_RATE("Setting rates for 802.11%c\n",
3011 hw->mode == MODE_IEEE80211A ?
3012 'a' : ((hw->mode == MODE_IEEE80211B) ? 'b' : 'g'));
3013
3014 for (i = 0; i < hw->num_rates; i++) {
3015 rate = &(hw->rates[i]);
3016 if ((rate->val < IWL_RATE_COUNT) &&
3017 (rate->flags & IEEE80211_RATE_SUPPORTED)) {
3018 IWL_DEBUG_RATE("Adding rate index %d (plcp %d)%s\n",
3019 rate->val, iwl_rates[rate->val].plcp,
3020 (rate->flags & IEEE80211_RATE_BASIC) ?
3021 "*" : "");
3022 priv->active_rate |= (1 << rate->val);
3023 if (rate->flags & IEEE80211_RATE_BASIC)
3024 priv->active_rate_basic |= (1 << rate->val);
3025 } else
3026 IWL_DEBUG_RATE("Not adding rate %d (plcp %d)\n",
3027 rate->val, iwl_rates[rate->val].plcp);
3028 }
3029
3030 IWL_DEBUG_RATE("Set active_rate = %0x, active_rate_basic = %0x\n",
3031 priv->active_rate, priv->active_rate_basic);
3032
3033 /*
3034 * If a basic rate is configured, then use it (adding IWL_RATE_1M_MASK)
3035 * otherwise set it to the default of all CCK rates and 6, 12, 24 for
3036 * OFDM
3037 */
3038 if (priv->active_rate_basic & IWL_CCK_BASIC_RATES_MASK)
3039 priv->staging_rxon.cck_basic_rates =
3040 ((priv->active_rate_basic &
3041 IWL_CCK_RATES_MASK) >> IWL_FIRST_CCK_RATE) & 0xF;
3042 else
3043 priv->staging_rxon.cck_basic_rates =
3044 (IWL_CCK_BASIC_RATES_MASK >> IWL_FIRST_CCK_RATE) & 0xF;
3045
3046 if (priv->active_rate_basic & IWL_OFDM_BASIC_RATES_MASK)
3047 priv->staging_rxon.ofdm_basic_rates =
3048 ((priv->active_rate_basic &
3049 (IWL_OFDM_BASIC_RATES_MASK | IWL_RATE_6M_MASK)) >>
3050 IWL_FIRST_OFDM_RATE) & 0xFF;
3051 else
3052 priv->staging_rxon.ofdm_basic_rates =
3053 (IWL_OFDM_BASIC_RATES_MASK >> IWL_FIRST_OFDM_RATE) & 0xFF;
3054 }
3055
3056 static void iwl_radio_kill_sw(struct iwl_priv *priv, int disable_radio)
3057 {
3058 unsigned long flags;
3059
3060 if (!!disable_radio == test_bit(STATUS_RF_KILL_SW, &priv->status))
3061 return;
3062
3063 IWL_DEBUG_RF_KILL("Manual SW RF KILL set to: RADIO %s\n",
3064 disable_radio ? "OFF" : "ON");
3065
3066 if (disable_radio) {
3067 iwl_scan_cancel(priv);
3068 /* FIXME: This is a workaround for AP */
3069 if (priv->iw_mode != IEEE80211_IF_TYPE_AP) {
3070 spin_lock_irqsave(&priv->lock, flags);
3071 iwl_write32(priv, CSR_UCODE_DRV_GP1_SET,
3072 CSR_UCODE_SW_BIT_RFKILL);
3073 spin_unlock_irqrestore(&priv->lock, flags);
3074 iwl_send_card_state(priv, CARD_STATE_CMD_DISABLE, 0);
3075 set_bit(STATUS_RF_KILL_SW, &priv->status);
3076 }
3077 return;
3078 }
3079
3080 spin_lock_irqsave(&priv->lock, flags);
3081 iwl_write32(priv, CSR_UCODE_DRV_GP1_CLR, CSR_UCODE_SW_BIT_RFKILL);
3082
3083 clear_bit(STATUS_RF_KILL_SW, &priv->status);
3084 spin_unlock_irqrestore(&priv->lock, flags);
3085
3086 /* wake up ucode */
3087 msleep(10);
3088
3089 spin_lock_irqsave(&priv->lock, flags);
3090 iwl_read32(priv, CSR_UCODE_DRV_GP1);
3091 if (!iwl_grab_restricted_access(priv))
3092 iwl_release_restricted_access(priv);
3093 spin_unlock_irqrestore(&priv->lock, flags);
3094
3095 if (test_bit(STATUS_RF_KILL_HW, &priv->status)) {
3096 IWL_DEBUG_RF_KILL("Can not turn radio back on - "
3097 "disabled by HW switch\n");
3098 return;
3099 }
3100
3101 queue_work(priv->workqueue, &priv->restart);
3102 return;
3103 }
3104
3105 void iwl_set_decrypted_flag(struct iwl_priv *priv, struct sk_buff *skb,
3106 u32 decrypt_res, struct ieee80211_rx_status *stats)
3107 {
3108 u16 fc =
3109 le16_to_cpu(((struct ieee80211_hdr *)skb->data)->frame_control);
3110
3111 if (priv->active_rxon.filter_flags & RXON_FILTER_DIS_DECRYPT_MSK)
3112 return;
3113
3114 if (!(fc & IEEE80211_FCTL_PROTECTED))
3115 return;
3116
3117 IWL_DEBUG_RX("decrypt_res:0x%x\n", decrypt_res);
3118 switch (decrypt_res & RX_RES_STATUS_SEC_TYPE_MSK) {
3119 case RX_RES_STATUS_SEC_TYPE_TKIP:
3120 if ((decrypt_res & RX_RES_STATUS_DECRYPT_TYPE_MSK) ==
3121 RX_RES_STATUS_BAD_ICV_MIC)
3122 stats->flag |= RX_FLAG_MMIC_ERROR;
3123 case RX_RES_STATUS_SEC_TYPE_WEP:
3124 case RX_RES_STATUS_SEC_TYPE_CCMP:
3125 if ((decrypt_res & RX_RES_STATUS_DECRYPT_TYPE_MSK) ==
3126 RX_RES_STATUS_DECRYPT_OK) {
3127 IWL_DEBUG_RX("hw decrypt successfully!!!\n");
3128 stats->flag |= RX_FLAG_DECRYPTED;
3129 }
3130 break;
3131
3132 default:
3133 break;
3134 }
3135 }
3136
3137 void iwl_handle_data_packet_monitor(struct iwl_priv *priv,
3138 struct iwl_rx_mem_buffer *rxb,
3139 void *data, short len,
3140 struct ieee80211_rx_status *stats,
3141 u16 phy_flags)
3142 {
3143 struct iwl_rt_rx_hdr *iwl_rt;
3144
3145 /* First cache any information we need before we overwrite
3146 * the information provided in the skb from the hardware */
3147 s8 signal = stats->ssi;
3148 s8 noise = 0;
3149 int rate = stats->rate;
3150 u64 tsf = stats->mactime;
3151 __le16 phy_flags_hw = cpu_to_le16(phy_flags);
3152
3153 /* We received data from the HW, so stop the watchdog */
3154 if (len > IWL_RX_BUF_SIZE - sizeof(*iwl_rt)) {
3155 IWL_DEBUG_DROP("Dropping too large packet in monitor\n");
3156 return;
3157 }
3158
3159 /* copy the frame data to write after where the radiotap header goes */
3160 iwl_rt = (void *)rxb->skb->data;
3161 memmove(iwl_rt->payload, data, len);
3162
3163 iwl_rt->rt_hdr.it_version = PKTHDR_RADIOTAP_VERSION;
3164 iwl_rt->rt_hdr.it_pad = 0; /* always good to zero */
3165
3166 /* total header + data */
3167 iwl_rt->rt_hdr.it_len = cpu_to_le16(sizeof(*iwl_rt));
3168
3169 /* Set the size of the skb to the size of the frame */
3170 skb_put(rxb->skb, sizeof(*iwl_rt) + len);
3171
3172 /* Big bitfield of all the fields we provide in radiotap */
3173 iwl_rt->rt_hdr.it_present =
3174 cpu_to_le32((1 << IEEE80211_RADIOTAP_TSFT) |
3175 (1 << IEEE80211_RADIOTAP_FLAGS) |
3176 (1 << IEEE80211_RADIOTAP_RATE) |
3177 (1 << IEEE80211_RADIOTAP_CHANNEL) |
3178 (1 << IEEE80211_RADIOTAP_DBM_ANTSIGNAL) |
3179 (1 << IEEE80211_RADIOTAP_DBM_ANTNOISE) |
3180 (1 << IEEE80211_RADIOTAP_ANTENNA));
3181
3182 /* Zero the flags, we'll add to them as we go */
3183 iwl_rt->rt_flags = 0;
3184
3185 iwl_rt->rt_tsf = cpu_to_le64(tsf);
3186
3187 /* Convert to dBm */
3188 iwl_rt->rt_dbmsignal = signal;
3189 iwl_rt->rt_dbmnoise = noise;
3190
3191 /* Convert the channel frequency and set the flags */
3192 iwl_rt->rt_channelMHz = cpu_to_le16(stats->freq);
3193 if (!(phy_flags_hw & RX_RES_PHY_FLAGS_BAND_24_MSK))
3194 iwl_rt->rt_chbitmask =
3195 cpu_to_le16((IEEE80211_CHAN_OFDM | IEEE80211_CHAN_5GHZ));
3196 else if (phy_flags_hw & RX_RES_PHY_FLAGS_MOD_CCK_MSK)
3197 iwl_rt->rt_chbitmask =
3198 cpu_to_le16((IEEE80211_CHAN_CCK | IEEE80211_CHAN_2GHZ));
3199 else /* 802.11g */
3200 iwl_rt->rt_chbitmask =
3201 cpu_to_le16((IEEE80211_CHAN_OFDM | IEEE80211_CHAN_2GHZ));
3202
3203 rate = iwl_rate_index_from_plcp(rate);
3204 if (rate == -1)
3205 iwl_rt->rt_rate = 0;
3206 else
3207 iwl_rt->rt_rate = iwl_rates[rate].ieee;
3208
3209 /* antenna number */
3210 iwl_rt->rt_antenna =
3211 le16_to_cpu(phy_flags_hw & RX_RES_PHY_FLAGS_ANTENNA_MSK) >> 4;
3212
3213 /* set the preamble flag if we have it */
3214 if (phy_flags_hw & RX_RES_PHY_FLAGS_SHORT_PREAMBLE_MSK)
3215 iwl_rt->rt_flags |= IEEE80211_RADIOTAP_F_SHORTPRE;
3216
3217 IWL_DEBUG_RX("Rx packet of %d bytes.\n", rxb->skb->len);
3218
3219 stats->flag |= RX_FLAG_RADIOTAP;
3220 ieee80211_rx_irqsafe(priv->hw, rxb->skb, stats);
3221 rxb->skb = NULL;
3222 }
3223
3224
3225 #define IWL_PACKET_RETRY_TIME HZ
3226
3227 int is_duplicate_packet(struct iwl_priv *priv, struct ieee80211_hdr *header)
3228 {
3229 u16 sc = le16_to_cpu(header->seq_ctrl);
3230 u16 seq = (sc & IEEE80211_SCTL_SEQ) >> 4;
3231 u16 frag = sc & IEEE80211_SCTL_FRAG;
3232 u16 *last_seq, *last_frag;
3233 unsigned long *last_time;
3234
3235 switch (priv->iw_mode) {
3236 case IEEE80211_IF_TYPE_IBSS:{
3237 struct list_head *p;
3238 struct iwl_ibss_seq *entry = NULL;
3239 u8 *mac = header->addr2;
3240 int index = mac[5] & (IWL_IBSS_MAC_HASH_SIZE - 1);
3241
3242 __list_for_each(p, &priv->ibss_mac_hash[index]) {
3243 entry =
3244 list_entry(p, struct iwl_ibss_seq, list);
3245 if (!compare_ether_addr(entry->mac, mac))
3246 break;
3247 }
3248 if (p == &priv->ibss_mac_hash[index]) {
3249 entry = kzalloc(sizeof(*entry), GFP_ATOMIC);
3250 if (!entry) {
3251 IWL_ERROR
3252 ("Cannot malloc new mac entry\n");
3253 return 0;
3254 }
3255 memcpy(entry->mac, mac, ETH_ALEN);
3256 entry->seq_num = seq;
3257 entry->frag_num = frag;
3258 entry->packet_time = jiffies;
3259 list_add(&entry->list,
3260 &priv->ibss_mac_hash[index]);
3261 return 0;
3262 }
3263 last_seq = &entry->seq_num;
3264 last_frag = &entry->frag_num;
3265 last_time = &entry->packet_time;
3266 break;
3267 }
3268 case IEEE80211_IF_TYPE_STA:
3269 last_seq = &priv->last_seq_num;
3270 last_frag = &priv->last_frag_num;
3271 last_time = &priv->last_packet_time;
3272 break;
3273 default:
3274 return 0;
3275 }
3276 if ((*last_seq == seq) &&
3277 time_after(*last_time + IWL_PACKET_RETRY_TIME, jiffies)) {
3278 if (*last_frag == frag)
3279 goto drop;
3280 if (*last_frag + 1 != frag)
3281 /* out-of-order fragment */
3282 goto drop;
3283 } else
3284 *last_seq = seq;
3285
3286 *last_frag = frag;
3287 *last_time = jiffies;
3288 return 0;
3289
3290 drop:
3291 return 1;
3292 }
3293
3294 #ifdef CONFIG_IWLWIFI_SPECTRUM_MEASUREMENT
3295
3296 #include "iwl-spectrum.h"
3297
3298 #define BEACON_TIME_MASK_LOW 0x00FFFFFF
3299 #define BEACON_TIME_MASK_HIGH 0xFF000000
3300 #define TIME_UNIT 1024
3301
3302 /*
3303 * extended beacon time format
3304 * time in usec will be changed into a 32-bit value in 8:24 format
3305 * the high 1 byte is the beacon counts
3306 * the lower 3 bytes is the time in usec within one beacon interval
3307 */
3308
3309 static u32 iwl_usecs_to_beacons(u32 usec, u32 beacon_interval)
3310 {
3311 u32 quot;
3312 u32 rem;
3313 u32 interval = beacon_interval * 1024;
3314
3315 if (!interval || !usec)
3316 return 0;
3317
3318 quot = (usec / interval) & (BEACON_TIME_MASK_HIGH >> 24);
3319 rem = (usec % interval) & BEACON_TIME_MASK_LOW;
3320
3321 return (quot << 24) + rem;
3322 }
3323
3324 /* base is usually what we get from ucode with each received frame,
3325 * the same as HW timer counter counting down
3326 */
3327
3328 static __le32 iwl_add_beacon_time(u32 base, u32 addon, u32 beacon_interval)
3329 {
3330 u32 base_low = base & BEACON_TIME_MASK_LOW;
3331 u32 addon_low = addon & BEACON_TIME_MASK_LOW;
3332 u32 interval = beacon_interval * TIME_UNIT;
3333 u32 res = (base & BEACON_TIME_MASK_HIGH) +
3334 (addon & BEACON_TIME_MASK_HIGH);
3335
3336 if (base_low > addon_low)
3337 res += base_low - addon_low;
3338 else if (base_low < addon_low) {
3339 res += interval + base_low - addon_low;
3340 res += (1 << 24);
3341 } else
3342 res += (1 << 24);
3343
3344 return cpu_to_le32(res);
3345 }
3346
3347 static int iwl_get_measurement(struct iwl_priv *priv,
3348 struct ieee80211_measurement_params *params,
3349 u8 type)
3350 {
3351 struct iwl_spectrum_cmd spectrum;
3352 struct iwl_rx_packet *res;
3353 struct iwl_host_cmd cmd = {
3354 .id = REPLY_SPECTRUM_MEASUREMENT_CMD,
3355 .data = (void *)&spectrum,
3356 .meta.flags = CMD_WANT_SKB,
3357 };
3358 u32 add_time = le64_to_cpu(params->start_time);
3359 int rc;
3360 int spectrum_resp_status;
3361 int duration = le16_to_cpu(params->duration);
3362
3363 if (iwl_is_associated(priv))
3364 add_time =
3365 iwl_usecs_to_beacons(
3366 le64_to_cpu(params->start_time) - priv->last_tsf,
3367 le16_to_cpu(priv->rxon_timing.beacon_interval));
3368
3369 memset(&spectrum, 0, sizeof(spectrum));
3370
3371 spectrum.channel_count = cpu_to_le16(1);
3372 spectrum.flags =
3373 RXON_FLG_TSF2HOST_MSK | RXON_FLG_ANT_A_MSK | RXON_FLG_DIS_DIV_MSK;
3374 spectrum.filter_flags = MEASUREMENT_FILTER_FLAG;
3375 cmd.len = sizeof(spectrum);
3376 spectrum.len = cpu_to_le16(cmd.len - sizeof(spectrum.len));
3377
3378 if (iwl_is_associated(priv))
3379 spectrum.start_time =
3380 iwl_add_beacon_time(priv->last_beacon_time,
3381 add_time,
3382 le16_to_cpu(priv->rxon_timing.beacon_interval));
3383 else
3384 spectrum.start_time = 0;
3385
3386 spectrum.channels[0].duration = cpu_to_le32(duration * TIME_UNIT);
3387 spectrum.channels[0].channel = params->channel;
3388 spectrum.channels[0].type = type;
3389 if (priv->active_rxon.flags & RXON_FLG_BAND_24G_MSK)
3390 spectrum.flags |= RXON_FLG_BAND_24G_MSK |
3391 RXON_FLG_AUTO_DETECT_MSK | RXON_FLG_TGG_PROTECT_MSK;
3392
3393 rc = iwl_send_cmd_sync(priv, &cmd);
3394 if (rc)
3395 return rc;
3396
3397 res = (struct iwl_rx_packet *)cmd.meta.u.skb->data;
3398 if (res->hdr.flags & IWL_CMD_FAILED_MSK) {
3399 IWL_ERROR("Bad return from REPLY_RX_ON_ASSOC command\n");
3400 rc = -EIO;
3401 }
3402
3403 spectrum_resp_status = le16_to_cpu(res->u.spectrum.status);
3404 switch (spectrum_resp_status) {
3405 case 0: /* Command will be handled */
3406 if (res->u.spectrum.id != 0xff) {
3407 IWL_DEBUG_INFO
3408 ("Replaced existing measurement: %d\n",
3409 res->u.spectrum.id);
3410 priv->measurement_status &= ~MEASUREMENT_READY;
3411 }
3412 priv->measurement_status |= MEASUREMENT_ACTIVE;
3413 rc = 0;
3414 break;
3415
3416 case 1: /* Command will not be handled */
3417 rc = -EAGAIN;
3418 break;
3419 }
3420
3421 dev_kfree_skb_any(cmd.meta.u.skb);
3422
3423 return rc;
3424 }
3425 #endif
3426
3427 static void iwl_txstatus_to_ieee(struct iwl_priv *priv,
3428 struct iwl_tx_info *tx_sta)
3429 {
3430
3431 tx_sta->status.ack_signal = 0;
3432 tx_sta->status.excessive_retries = 0;
3433 tx_sta->status.queue_length = 0;
3434 tx_sta->status.queue_number = 0;
3435
3436 if (in_interrupt())
3437 ieee80211_tx_status_irqsafe(priv->hw,
3438 tx_sta->skb[0], &(tx_sta->status));
3439 else
3440 ieee80211_tx_status(priv->hw,
3441 tx_sta->skb[0], &(tx_sta->status));
3442
3443 tx_sta->skb[0] = NULL;
3444 }
3445
3446 /**
3447 * iwl_tx_queue_reclaim - Reclaim Tx queue entries no more used by NIC.
3448 *
3449 * When FW advances 'R' index, all entries between old and
3450 * new 'R' index need to be reclaimed. As result, some free space
3451 * forms. If there is enough free space (> low mark), wake Tx queue.
3452 */
3453 int iwl_tx_queue_reclaim(struct iwl_priv *priv, int txq_id, int index)
3454 {
3455 struct iwl_tx_queue *txq = &priv->txq[txq_id];
3456 struct iwl_queue *q = &txq->q;
3457 int nfreed = 0;
3458
3459 if ((index >= q->n_bd) || (x2_queue_used(q, index) == 0)) {
3460 IWL_ERROR("Read index for DMA queue txq id (%d), index %d, "
3461 "is out of range [0-%d] %d %d.\n", txq_id,
3462 index, q->n_bd, q->first_empty, q->last_used);
3463 return 0;
3464 }
3465
3466 for (index = iwl_queue_inc_wrap(index, q->n_bd);
3467 q->last_used != index;
3468 q->last_used = iwl_queue_inc_wrap(q->last_used, q->n_bd)) {
3469 if (txq_id != IWL_CMD_QUEUE_NUM) {
3470 iwl_txstatus_to_ieee(priv,
3471 &(txq->txb[txq->q.last_used]));
3472 iwl_hw_txq_free_tfd(priv, txq);
3473 } else if (nfreed > 1) {
3474 IWL_ERROR("HCMD skipped: index (%d) %d %d\n", index,
3475 q->first_empty, q->last_used);
3476 queue_work(priv->workqueue, &priv->restart);
3477 }
3478 nfreed++;
3479 }
3480
3481 if (iwl_queue_space(q) > q->low_mark && (txq_id >= 0) &&
3482 (txq_id != IWL_CMD_QUEUE_NUM) &&
3483 priv->mac80211_registered)
3484 ieee80211_wake_queue(priv->hw, txq_id);
3485
3486
3487 return nfreed;
3488 }
3489
3490 static int iwl_is_tx_success(u32 status)
3491 {
3492 status &= TX_STATUS_MSK;
3493 return (status == TX_STATUS_SUCCESS)
3494 || (status == TX_STATUS_DIRECT_DONE);
3495 }
3496
3497 /******************************************************************************
3498 *
3499 * Generic RX handler implementations
3500 *
3501 ******************************************************************************/
3502 #ifdef CONFIG_IWLWIFI_HT
3503 #ifdef CONFIG_IWLWIFI_HT_AGG
3504
3505 static inline int iwl_get_ra_sta_id(struct iwl_priv *priv,
3506 struct ieee80211_hdr *hdr)
3507 {
3508 if (priv->iw_mode == IEEE80211_IF_TYPE_STA)
3509 return IWL_AP_ID;
3510 else {
3511 u8 *da = ieee80211_get_DA(hdr);
3512 return iwl_hw_find_station(priv, da);
3513 }
3514 }
3515
3516 static struct ieee80211_hdr *iwl_tx_queue_get_hdr(
3517 struct iwl_priv *priv, int txq_id, int idx)
3518 {
3519 if (priv->txq[txq_id].txb[idx].skb[0])
3520 return (struct ieee80211_hdr *)priv->txq[txq_id].
3521 txb[idx].skb[0]->data;
3522 return NULL;
3523 }
3524
3525 static inline u32 iwl_get_scd_ssn(struct iwl_tx_resp *tx_resp)
3526 {
3527 __le32 *scd_ssn = (__le32 *)((u32 *)&tx_resp->status +
3528 tx_resp->frame_count);
3529 return le32_to_cpu(*scd_ssn) & MAX_SN;
3530
3531 }
3532 static int iwl4965_tx_status_reply_tx(struct iwl_priv *priv,
3533 struct iwl_ht_agg *agg,
3534 struct iwl_tx_resp *tx_resp,
3535 u16 start_idx)
3536 {
3537 u32 status;
3538 __le32 *frame_status = &tx_resp->status;
3539 struct ieee80211_tx_status *tx_status = NULL;
3540 struct ieee80211_hdr *hdr = NULL;
3541 int i, sh;
3542 int txq_id, idx;
3543 u16 seq;
3544
3545 if (agg->wait_for_ba)
3546 IWL_DEBUG_TX_REPLY("got tx repsons w/o back\n");
3547
3548 agg->frame_count = tx_resp->frame_count;
3549 agg->start_idx = start_idx;
3550 agg->rate_n_flags = le32_to_cpu(tx_resp->rate_n_flags);
3551 agg->bitmap0 = agg->bitmap1 = 0;
3552
3553 if (agg->frame_count == 1) {
3554 struct iwl_tx_queue *txq ;
3555 status = le32_to_cpu(frame_status[0]);
3556
3557 txq_id = agg->txq_id;
3558 txq = &priv->txq[txq_id];
3559 /* FIXME: code repetition */
3560 IWL_DEBUG_TX_REPLY("FrameCnt = %d, StartIdx=%d \n",
3561 agg->frame_count, agg->start_idx);
3562
3563 tx_status = &(priv->txq[txq_id].txb[txq->q.last_used].status);
3564 tx_status->retry_count = tx_resp->failure_frame;
3565 tx_status->queue_number = status & 0xff;
3566 tx_status->queue_length = tx_resp->bt_kill_count;
3567 tx_status->queue_length |= tx_resp->failure_rts;
3568
3569 tx_status->flags = iwl_is_tx_success(status)?
3570 IEEE80211_TX_STATUS_ACK : 0;
3571 tx_status->control.tx_rate =
3572 iwl_hw_get_rate_n_flags(tx_resp->rate_n_flags);
3573 /* FIXME: code repetition end */
3574
3575 IWL_DEBUG_TX_REPLY("1 Frame 0x%x failure :%d\n",
3576 status & 0xff, tx_resp->failure_frame);
3577 IWL_DEBUG_TX_REPLY("Rate Info rate_n_flags=%x\n",
3578 iwl_hw_get_rate_n_flags(tx_resp->rate_n_flags));
3579
3580 agg->wait_for_ba = 0;
3581 } else {
3582 u64 bitmap = 0;
3583 int start = agg->start_idx;
3584
3585 for (i = 0; i < agg->frame_count; i++) {
3586 u16 sc;
3587 status = le32_to_cpu(frame_status[i]);
3588 seq = status >> 16;
3589 idx = SEQ_TO_INDEX(seq);
3590 txq_id = SEQ_TO_QUEUE(seq);
3591
3592 if (status & (AGG_TX_STATE_FEW_BYTES_MSK |
3593 AGG_TX_STATE_ABORT_MSK))
3594 continue;
3595
3596 IWL_DEBUG_TX_REPLY("FrameCnt = %d, txq_id=%d idx=%d\n",
3597 agg->frame_count, txq_id, idx);
3598
3599 hdr = iwl_tx_queue_get_hdr(priv, txq_id, idx);
3600
3601 sc = le16_to_cpu(hdr->seq_ctrl);
3602 if (idx != (SEQ_TO_SN(sc) & 0xff)) {
3603 IWL_ERROR("BUG_ON idx doesn't match seq control"
3604 " idx=%d, seq_idx=%d, seq=%d\n",
3605 idx, SEQ_TO_SN(sc),
3606 hdr->seq_ctrl);
3607 return -1;
3608 }
3609
3610 IWL_DEBUG_TX_REPLY("AGG Frame i=%d idx %d seq=%d\n",
3611 i, idx, SEQ_TO_SN(sc));
3612
3613 sh = idx - start;
3614 if (sh > 64) {
3615 sh = (start - idx) + 0xff;
3616 bitmap = bitmap << sh;
3617 sh = 0;
3618 start = idx;
3619 } else if (sh < -64)
3620 sh = 0xff - (start - idx);
3621 else if (sh < 0) {
3622 sh = start - idx;
3623 start = idx;
3624 bitmap = bitmap << sh;
3625 sh = 0;
3626 }
3627 bitmap |= (1 << sh);
3628 IWL_DEBUG_TX_REPLY("start=%d bitmap=0x%x\n",
3629 start, (u32)(bitmap & 0xFFFFFFFF));
3630 }
3631
3632 agg->bitmap0 = bitmap & 0xFFFFFFFF;
3633 agg->bitmap1 = bitmap >> 32;
3634 agg->start_idx = start;
3635 agg->rate_n_flags = le32_to_cpu(tx_resp->rate_n_flags);
3636 IWL_DEBUG_TX_REPLY("Frames %d start_idx=%d bitmap=0x%x\n",
3637 agg->frame_count, agg->start_idx,
3638 agg->bitmap0);
3639
3640 if (bitmap)
3641 agg->wait_for_ba = 1;
3642 }
3643 return 0;
3644 }
3645 #endif
3646 #endif
3647
3648 static void iwl_rx_reply_tx(struct iwl_priv *priv,
3649 struct iwl_rx_mem_buffer *rxb)
3650 {
3651 struct iwl_rx_packet *pkt = (void *)rxb->skb->data;
3652 u16 sequence = le16_to_cpu(pkt->hdr.sequence);
3653 int txq_id = SEQ_TO_QUEUE(sequence);
3654 int index = SEQ_TO_INDEX(sequence);
3655 struct iwl_tx_queue *txq = &priv->txq[txq_id];
3656 struct ieee80211_tx_status *tx_status;
3657 struct iwl_tx_resp *tx_resp = (void *)&pkt->u.raw[0];
3658 u32 status = le32_to_cpu(tx_resp->status);
3659 #ifdef CONFIG_IWLWIFI_HT
3660 #ifdef CONFIG_IWLWIFI_HT_AGG
3661 int tid, sta_id;
3662 #endif
3663 #endif
3664
3665 if ((index >= txq->q.n_bd) || (x2_queue_used(&txq->q, index) == 0)) {
3666 IWL_ERROR("Read index for DMA queue txq_id (%d) index %d "
3667 "is out of range [0-%d] %d %d\n", txq_id,
3668 index, txq->q.n_bd, txq->q.first_empty,
3669 txq->q.last_used);
3670 return;
3671 }
3672
3673 #ifdef CONFIG_IWLWIFI_HT
3674 #ifdef CONFIG_IWLWIFI_HT_AGG
3675 if (txq->sched_retry) {
3676 const u32 scd_ssn = iwl_get_scd_ssn(tx_resp);
3677 struct ieee80211_hdr *hdr =
3678 iwl_tx_queue_get_hdr(priv, txq_id, index);
3679 struct iwl_ht_agg *agg = NULL;
3680 __le16 *qc = ieee80211_get_qos_ctrl(hdr);
3681
3682 if (qc == NULL) {
3683 IWL_ERROR("BUG_ON qc is null!!!!\n");
3684 return;
3685 }
3686
3687 tid = le16_to_cpu(*qc) & 0xf;
3688
3689 sta_id = iwl_get_ra_sta_id(priv, hdr);
3690 if (unlikely(sta_id == IWL_INVALID_STATION)) {
3691 IWL_ERROR("Station not known for\n");
3692 return;
3693 }
3694
3695 agg = &priv->stations[sta_id].tid[tid].agg;
3696
3697 iwl4965_tx_status_reply_tx(priv, agg, tx_resp, index);
3698
3699 if ((tx_resp->frame_count == 1) &&
3700 !iwl_is_tx_success(status)) {
3701 /* TODO: send BAR */
3702 }
3703
3704 if ((txq->q.last_used != (scd_ssn & 0xff))) {
3705 index = iwl_queue_dec_wrap(scd_ssn & 0xff, txq->q.n_bd);
3706 IWL_DEBUG_TX_REPLY("Retry scheduler reclaim scd_ssn "
3707 "%d index %d\n", scd_ssn , index);
3708 iwl_tx_queue_reclaim(priv, txq_id, index);
3709 }
3710 } else {
3711 #endif /* CONFIG_IWLWIFI_HT_AGG */
3712 #endif /* CONFIG_IWLWIFI_HT */
3713 tx_status = &(txq->txb[txq->q.last_used].status);
3714
3715 tx_status->retry_count = tx_resp->failure_frame;
3716 tx_status->queue_number = status;
3717 tx_status->queue_length = tx_resp->bt_kill_count;
3718 tx_status->queue_length |= tx_resp->failure_rts;
3719
3720 tx_status->flags =
3721 iwl_is_tx_success(status) ? IEEE80211_TX_STATUS_ACK : 0;
3722
3723 tx_status->control.tx_rate =
3724 iwl_hw_get_rate_n_flags(tx_resp->rate_n_flags);
3725
3726 IWL_DEBUG_TX("Tx queue %d Status %s (0x%08x) rate_n_flags 0x%x "
3727 "retries %d\n", txq_id, iwl_get_tx_fail_reason(status),
3728 status, le32_to_cpu(tx_resp->rate_n_flags),
3729 tx_resp->failure_frame);
3730
3731 IWL_DEBUG_TX_REPLY("Tx queue reclaim %d\n", index);
3732 if (index != -1)
3733 iwl_tx_queue_reclaim(priv, txq_id, index);
3734 #ifdef CONFIG_IWLWIFI_HT
3735 #ifdef CONFIG_IWLWIFI_HT_AGG
3736 }
3737 #endif /* CONFIG_IWLWIFI_HT_AGG */
3738 #endif /* CONFIG_IWLWIFI_HT */
3739
3740 if (iwl_check_bits(status, TX_ABORT_REQUIRED_MSK))
3741 IWL_ERROR("TODO: Implement Tx ABORT REQUIRED!!!\n");
3742 }
3743
3744
3745 static void iwl_rx_reply_alive(struct iwl_priv *priv,
3746 struct iwl_rx_mem_buffer *rxb)
3747 {
3748 struct iwl_rx_packet *pkt = (void *)rxb->skb->data;
3749 struct iwl_alive_resp *palive;
3750 struct delayed_work *pwork;
3751
3752 palive = &pkt->u.alive_frame;
3753
3754 IWL_DEBUG_INFO("Alive ucode status 0x%08X revision "
3755 "0x%01X 0x%01X\n",
3756 palive->is_valid, palive->ver_type,
3757 palive->ver_subtype);
3758
3759 if (palive->ver_subtype == INITIALIZE_SUBTYPE) {
3760 IWL_DEBUG_INFO("Initialization Alive received.\n");
3761 memcpy(&priv->card_alive_init,
3762 &pkt->u.alive_frame,
3763 sizeof(struct iwl_init_alive_resp));
3764 pwork = &priv->init_alive_start;
3765 } else {
3766 IWL_DEBUG_INFO("Runtime Alive received.\n");
3767 memcpy(&priv->card_alive, &pkt->u.alive_frame,
3768 sizeof(struct iwl_alive_resp));
3769 pwork = &priv->alive_start;
3770 }
3771
3772 /* We delay the ALIVE response by 5ms to
3773 * give the HW RF Kill time to activate... */
3774 if (palive->is_valid == UCODE_VALID_OK)
3775 queue_delayed_work(priv->workqueue, pwork,
3776 msecs_to_jiffies(5));
3777 else
3778 IWL_WARNING("uCode did not respond OK.\n");
3779 }
3780
3781 static void iwl_rx_reply_add_sta(struct iwl_priv *priv,
3782 struct iwl_rx_mem_buffer *rxb)
3783 {
3784 struct iwl_rx_packet *pkt = (void *)rxb->skb->data;
3785
3786 IWL_DEBUG_RX("Received REPLY_ADD_STA: 0x%02X\n", pkt->u.status);
3787 return;
3788 }
3789
3790 static void iwl_rx_reply_error(struct iwl_priv *priv,
3791 struct iwl_rx_mem_buffer *rxb)
3792 {
3793 struct iwl_rx_packet *pkt = (void *)rxb->skb->data;
3794
3795 IWL_ERROR("Error Reply type 0x%08X cmd %s (0x%02X) "
3796 "seq 0x%04X ser 0x%08X\n",
3797 le32_to_cpu(pkt->u.err_resp.error_type),
3798 get_cmd_string(pkt->u.err_resp.cmd_id),
3799 pkt->u.err_resp.cmd_id,
3800 le16_to_cpu(pkt->u.err_resp.bad_cmd_seq_num),
3801 le32_to_cpu(pkt->u.err_resp.error_info));
3802 }
3803
3804 #define TX_STATUS_ENTRY(x) case TX_STATUS_FAIL_ ## x: return #x
3805
3806 static void iwl_rx_csa(struct iwl_priv *priv, struct iwl_rx_mem_buffer *rxb)
3807 {
3808 struct iwl_rx_packet *pkt = (void *)rxb->skb->data;
3809 struct iwl_rxon_cmd *rxon = (void *)&priv->active_rxon;
3810 struct iwl_csa_notification *csa = &(pkt->u.csa_notif);
3811 IWL_DEBUG_11H("CSA notif: channel %d, status %d\n",
3812 le16_to_cpu(csa->channel), le32_to_cpu(csa->status));
3813 rxon->channel = csa->channel;
3814 priv->staging_rxon.channel = csa->channel;
3815 }
3816
3817 static void iwl_rx_spectrum_measure_notif(struct iwl_priv *priv,
3818 struct iwl_rx_mem_buffer *rxb)
3819 {
3820 #ifdef CONFIG_IWLWIFI_SPECTRUM_MEASUREMENT
3821 struct iwl_rx_packet *pkt = (void *)rxb->skb->data;
3822 struct iwl_spectrum_notification *report = &(pkt->u.spectrum_notif);
3823
3824 if (!report->state) {
3825 IWL_DEBUG(IWL_DL_11H | IWL_DL_INFO,
3826 "Spectrum Measure Notification: Start\n");
3827 return;
3828 }
3829
3830 memcpy(&priv->measure_report, report, sizeof(*report));
3831 priv->measurement_status |= MEASUREMENT_READY;
3832 #endif
3833 }
3834
3835 static void iwl_rx_pm_sleep_notif(struct iwl_priv *priv,
3836 struct iwl_rx_mem_buffer *rxb)
3837 {
3838 #ifdef CONFIG_IWLWIFI_DEBUG
3839 struct iwl_rx_packet *pkt = (void *)rxb->skb->data;
3840 struct iwl_sleep_notification *sleep = &(pkt->u.sleep_notif);
3841 IWL_DEBUG_RX("sleep mode: %d, src: %d\n",
3842 sleep->pm_sleep_mode, sleep->pm_wakeup_src);
3843 #endif
3844 }
3845
3846 static void iwl_rx_pm_debug_statistics_notif(struct iwl_priv *priv,
3847 struct iwl_rx_mem_buffer *rxb)
3848 {
3849 struct iwl_rx_packet *pkt = (void *)rxb->skb->data;
3850 IWL_DEBUG_RADIO("Dumping %d bytes of unhandled "
3851 "notification for %s:\n",
3852 le32_to_cpu(pkt->len), get_cmd_string(pkt->hdr.cmd));
3853 iwl_print_hex_dump(IWL_DL_RADIO, pkt->u.raw, le32_to_cpu(pkt->len));
3854 }
3855
3856 static void iwl_bg_beacon_update(struct work_struct *work)
3857 {
3858 struct iwl_priv *priv =
3859 container_of(work, struct iwl_priv, beacon_update);
3860 struct sk_buff *beacon;
3861
3862 /* Pull updated AP beacon from mac80211. will fail if not in AP mode */
3863 beacon = ieee80211_beacon_get(priv->hw, priv->interface_id, NULL);
3864
3865 if (!beacon) {
3866 IWL_ERROR("update beacon failed\n");
3867 return;
3868 }
3869
3870 mutex_lock(&priv->mutex);
3871 /* new beacon skb is allocated every time; dispose previous.*/
3872 if (priv->ibss_beacon)
3873 dev_kfree_skb(priv->ibss_beacon);
3874
3875 priv->ibss_beacon = beacon;
3876 mutex_unlock(&priv->mutex);
3877
3878 iwl_send_beacon_cmd(priv);
3879 }
3880
3881 static void iwl_rx_beacon_notif(struct iwl_priv *priv,
3882 struct iwl_rx_mem_buffer *rxb)
3883 {
3884 #ifdef CONFIG_IWLWIFI_DEBUG
3885 struct iwl_rx_packet *pkt = (void *)rxb->skb->data;
3886 struct iwl_beacon_notif *beacon = &(pkt->u.beacon_status);
3887 u8 rate = iwl_hw_get_rate(beacon->beacon_notify_hdr.rate_n_flags);
3888
3889 IWL_DEBUG_RX("beacon status %x retries %d iss %d "
3890 "tsf %d %d rate %d\n",
3891 le32_to_cpu(beacon->beacon_notify_hdr.status) & TX_STATUS_MSK,
3892 beacon->beacon_notify_hdr.failure_frame,
3893 le32_to_cpu(beacon->ibss_mgr_status),
3894 le32_to_cpu(beacon->high_tsf),
3895 le32_to_cpu(beacon->low_tsf), rate);
3896 #endif
3897
3898 if ((priv->iw_mode == IEEE80211_IF_TYPE_AP) &&
3899 (!test_bit(STATUS_EXIT_PENDING, &priv->status)))
3900 queue_work(priv->workqueue, &priv->beacon_update);
3901 }
3902
3903 /* Service response to REPLY_SCAN_CMD (0x80) */
3904 static void iwl_rx_reply_scan(struct iwl_priv *priv,
3905 struct iwl_rx_mem_buffer *rxb)
3906 {
3907 #ifdef CONFIG_IWLWIFI_DEBUG
3908 struct iwl_rx_packet *pkt = (void *)rxb->skb->data;
3909 struct iwl_scanreq_notification *notif =
3910 (struct iwl_scanreq_notification *)pkt->u.raw;
3911
3912 IWL_DEBUG_RX("Scan request status = 0x%x\n", notif->status);
3913 #endif
3914 }
3915
3916 /* Service SCAN_START_NOTIFICATION (0x82) */
3917 static void iwl_rx_scan_start_notif(struct iwl_priv *priv,
3918 struct iwl_rx_mem_buffer *rxb)
3919 {
3920 struct iwl_rx_packet *pkt = (void *)rxb->skb->data;
3921 struct iwl_scanstart_notification *notif =
3922 (struct iwl_scanstart_notification *)pkt->u.raw;
3923 priv->scan_start_tsf = le32_to_cpu(notif->tsf_low);
3924 IWL_DEBUG_SCAN("Scan start: "
3925 "%d [802.11%s] "
3926 "(TSF: 0x%08X:%08X) - %d (beacon timer %u)\n",
3927 notif->channel,
3928 notif->band ? "bg" : "a",
3929 notif->tsf_high,
3930 notif->tsf_low, notif->status, notif->beacon_timer);
3931 }
3932
3933 /* Service SCAN_RESULTS_NOTIFICATION (0x83) */
3934 static void iwl_rx_scan_results_notif(struct iwl_priv *priv,
3935 struct iwl_rx_mem_buffer *rxb)
3936 {
3937 struct iwl_rx_packet *pkt = (void *)rxb->skb->data;
3938 struct iwl_scanresults_notification *notif =
3939 (struct iwl_scanresults_notification *)pkt->u.raw;
3940
3941 IWL_DEBUG_SCAN("Scan ch.res: "
3942 "%d [802.11%s] "
3943 "(TSF: 0x%08X:%08X) - %d "
3944 "elapsed=%lu usec (%dms since last)\n",
3945 notif->channel,
3946 notif->band ? "bg" : "a",
3947 le32_to_cpu(notif->tsf_high),
3948 le32_to_cpu(notif->tsf_low),
3949 le32_to_cpu(notif->statistics[0]),
3950 le32_to_cpu(notif->tsf_low) - priv->scan_start_tsf,
3951 jiffies_to_msecs(elapsed_jiffies
3952 (priv->last_scan_jiffies, jiffies)));
3953
3954 priv->last_scan_jiffies = jiffies;
3955 }
3956
3957 /* Service SCAN_COMPLETE_NOTIFICATION (0x84) */
3958 static void iwl_rx_scan_complete_notif(struct iwl_priv *priv,
3959 struct iwl_rx_mem_buffer *rxb)
3960 {
3961 struct iwl_rx_packet *pkt = (void *)rxb->skb->data;
3962 struct iwl_scancomplete_notification *scan_notif = (void *)pkt->u.raw;
3963
3964 IWL_DEBUG_SCAN("Scan complete: %d channels (TSF 0x%08X:%08X) - %d\n",
3965 scan_notif->scanned_channels,
3966 scan_notif->tsf_low,
3967 scan_notif->tsf_high, scan_notif->status);
3968
3969 /* The HW is no longer scanning */
3970 clear_bit(STATUS_SCAN_HW, &priv->status);
3971
3972 /* The scan completion notification came in, so kill that timer... */
3973 cancel_delayed_work(&priv->scan_check);
3974
3975 IWL_DEBUG_INFO("Scan pass on %sGHz took %dms\n",
3976 (priv->scan_bands == 2) ? "2.4" : "5.2",
3977 jiffies_to_msecs(elapsed_jiffies
3978 (priv->scan_pass_start, jiffies)));
3979
3980 /* Remove this scanned band from the list
3981 * of pending bands to scan */
3982 priv->scan_bands--;
3983
3984 /* If a request to abort was given, or the scan did not succeed
3985 * then we reset the scan state machine and terminate,
3986 * re-queuing another scan if one has been requested */
3987 if (test_bit(STATUS_SCAN_ABORTING, &priv->status)) {
3988 IWL_DEBUG_INFO("Aborted scan completed.\n");
3989 clear_bit(STATUS_SCAN_ABORTING, &priv->status);
3990 } else {
3991 /* If there are more bands on this scan pass reschedule */
3992 if (priv->scan_bands > 0)
3993 goto reschedule;
3994 }
3995
3996 priv->last_scan_jiffies = jiffies;
3997 IWL_DEBUG_INFO("Setting scan to off\n");
3998
3999 clear_bit(STATUS_SCANNING, &priv->status);
4000
4001 IWL_DEBUG_INFO("Scan took %dms\n",
4002 jiffies_to_msecs(elapsed_jiffies(priv->scan_start, jiffies)));
4003
4004 queue_work(priv->workqueue, &priv->scan_completed);
4005
4006 return;
4007
4008 reschedule:
4009 priv->scan_pass_start = jiffies;
4010 queue_work(priv->workqueue, &priv->request_scan);
4011 }
4012
4013 /* Handle notification from uCode that card's power state is changing
4014 * due to software, hardware, or critical temperature RFKILL */
4015 static void iwl_rx_card_state_notif(struct iwl_priv *priv,
4016 struct iwl_rx_mem_buffer *rxb)
4017 {
4018 struct iwl_rx_packet *pkt = (void *)rxb->skb->data;
4019 u32 flags = le32_to_cpu(pkt->u.card_state_notif.flags);
4020 unsigned long status = priv->status;
4021
4022 IWL_DEBUG_RF_KILL("Card state received: HW:%s SW:%s\n",
4023 (flags & HW_CARD_DISABLED) ? "Kill" : "On",
4024 (flags & SW_CARD_DISABLED) ? "Kill" : "On");
4025
4026 if (flags & (SW_CARD_DISABLED | HW_CARD_DISABLED |
4027 RF_CARD_DISABLED)) {
4028
4029 iwl_write32(priv, CSR_UCODE_DRV_GP1_SET,
4030 CSR_UCODE_DRV_GP1_BIT_CMD_BLOCKED);
4031
4032 if (!iwl_grab_restricted_access(priv)) {
4033 iwl_write_restricted(
4034 priv, HBUS_TARG_MBX_C,
4035 HBUS_TARG_MBX_C_REG_BIT_CMD_BLOCKED);
4036
4037 iwl_release_restricted_access(priv);
4038 }
4039
4040 if (!(flags & RXON_CARD_DISABLED)) {
4041 iwl_write32(priv, CSR_UCODE_DRV_GP1_CLR,
4042 CSR_UCODE_DRV_GP1_BIT_CMD_BLOCKED);
4043 if (!iwl_grab_restricted_access(priv)) {
4044 iwl_write_restricted(
4045 priv, HBUS_TARG_MBX_C,
4046 HBUS_TARG_MBX_C_REG_BIT_CMD_BLOCKED);
4047
4048 iwl_release_restricted_access(priv);
4049 }
4050 }
4051
4052 if (flags & RF_CARD_DISABLED) {
4053 iwl_write32(priv, CSR_UCODE_DRV_GP1_SET,
4054 CSR_UCODE_DRV_GP1_REG_BIT_CT_KILL_EXIT);
4055 iwl_read32(priv, CSR_UCODE_DRV_GP1);
4056 if (!iwl_grab_restricted_access(priv))
4057 iwl_release_restricted_access(priv);
4058 }
4059 }
4060
4061 if (flags & HW_CARD_DISABLED)
4062 set_bit(STATUS_RF_KILL_HW, &priv->status);
4063 else
4064 clear_bit(STATUS_RF_KILL_HW, &priv->status);
4065
4066
4067 if (flags & SW_CARD_DISABLED)
4068 set_bit(STATUS_RF_KILL_SW, &priv->status);
4069 else
4070 clear_bit(STATUS_RF_KILL_SW, &priv->status);
4071
4072 if (!(flags & RXON_CARD_DISABLED))
4073 iwl_scan_cancel(priv);
4074
4075 if ((test_bit(STATUS_RF_KILL_HW, &status) !=
4076 test_bit(STATUS_RF_KILL_HW, &priv->status)) ||
4077 (test_bit(STATUS_RF_KILL_SW, &status) !=
4078 test_bit(STATUS_RF_KILL_SW, &priv->status)))
4079 queue_work(priv->workqueue, &priv->rf_kill);
4080 else
4081 wake_up_interruptible(&priv->wait_command_queue);
4082 }
4083
4084 /**
4085 * iwl_setup_rx_handlers - Initialize Rx handler callbacks
4086 *
4087 * Setup the RX handlers for each of the reply types sent from the uCode
4088 * to the host.
4089 *
4090 * This function chains into the hardware specific files for them to setup
4091 * any hardware specific handlers as well.
4092 */
4093 static void iwl_setup_rx_handlers(struct iwl_priv *priv)
4094 {
4095 priv->rx_handlers[REPLY_ALIVE] = iwl_rx_reply_alive;
4096 priv->rx_handlers[REPLY_ADD_STA] = iwl_rx_reply_add_sta;
4097 priv->rx_handlers[REPLY_ERROR] = iwl_rx_reply_error;
4098 priv->rx_handlers[CHANNEL_SWITCH_NOTIFICATION] = iwl_rx_csa;
4099 priv->rx_handlers[SPECTRUM_MEASURE_NOTIFICATION] =
4100 iwl_rx_spectrum_measure_notif;
4101 priv->rx_handlers[PM_SLEEP_NOTIFICATION] = iwl_rx_pm_sleep_notif;
4102 priv->rx_handlers[PM_DEBUG_STATISTIC_NOTIFIC] =
4103 iwl_rx_pm_debug_statistics_notif;
4104 priv->rx_handlers[BEACON_NOTIFICATION] = iwl_rx_beacon_notif;
4105
4106 /* NOTE: iwl_rx_statistics is different based on whether
4107 * the build is for the 3945 or the 4965. See the
4108 * corresponding implementation in iwl-XXXX.c
4109 *
4110 * The same handler is used for both the REPLY to a
4111 * discrete statistics request from the host as well as
4112 * for the periodic statistics notification from the uCode
4113 */
4114 priv->rx_handlers[REPLY_STATISTICS_CMD] = iwl_hw_rx_statistics;
4115 priv->rx_handlers[STATISTICS_NOTIFICATION] = iwl_hw_rx_statistics;
4116
4117 priv->rx_handlers[REPLY_SCAN_CMD] = iwl_rx_reply_scan;
4118 priv->rx_handlers[SCAN_START_NOTIFICATION] = iwl_rx_scan_start_notif;
4119 priv->rx_handlers[SCAN_RESULTS_NOTIFICATION] =
4120 iwl_rx_scan_results_notif;
4121 priv->rx_handlers[SCAN_COMPLETE_NOTIFICATION] =
4122 iwl_rx_scan_complete_notif;
4123 priv->rx_handlers[CARD_STATE_NOTIFICATION] = iwl_rx_card_state_notif;
4124 priv->rx_handlers[REPLY_TX] = iwl_rx_reply_tx;
4125
4126 /* Setup hardware specific Rx handlers */
4127 iwl_hw_rx_handler_setup(priv);
4128 }
4129
4130 /**
4131 * iwl_tx_cmd_complete - Pull unused buffers off the queue and reclaim them
4132 * @rxb: Rx buffer to reclaim
4133 *
4134 * If an Rx buffer has an async callback associated with it the callback
4135 * will be executed. The attached skb (if present) will only be freed
4136 * if the callback returns 1
4137 */
4138 static void iwl_tx_cmd_complete(struct iwl_priv *priv,
4139 struct iwl_rx_mem_buffer *rxb)
4140 {
4141 struct iwl_rx_packet *pkt = (struct iwl_rx_packet *)rxb->skb->data;
4142 u16 sequence = le16_to_cpu(pkt->hdr.sequence);
4143 int txq_id = SEQ_TO_QUEUE(sequence);
4144 int index = SEQ_TO_INDEX(sequence);
4145 int huge = sequence & SEQ_HUGE_FRAME;
4146 int cmd_index;
4147 struct iwl_cmd *cmd;
4148
4149 /* If a Tx command is being handled and it isn't in the actual
4150 * command queue then there a command routing bug has been introduced
4151 * in the queue management code. */
4152 if (txq_id != IWL_CMD_QUEUE_NUM)
4153 IWL_ERROR("Error wrong command queue %d command id 0x%X\n",
4154 txq_id, pkt->hdr.cmd);
4155 BUG_ON(txq_id != IWL_CMD_QUEUE_NUM);
4156
4157 cmd_index = get_cmd_index(&priv->txq[IWL_CMD_QUEUE_NUM].q, index, huge);
4158 cmd = &priv->txq[IWL_CMD_QUEUE_NUM].cmd[cmd_index];
4159
4160 /* Input error checking is done when commands are added to queue. */
4161 if (cmd->meta.flags & CMD_WANT_SKB) {
4162 cmd->meta.source->u.skb = rxb->skb;
4163 rxb->skb = NULL;
4164 } else if (cmd->meta.u.callback &&
4165 !cmd->meta.u.callback(priv, cmd, rxb->skb))
4166 rxb->skb = NULL;
4167
4168 iwl_tx_queue_reclaim(priv, txq_id, index);
4169
4170 if (!(cmd->meta.flags & CMD_ASYNC)) {
4171 clear_bit(STATUS_HCMD_ACTIVE, &priv->status);
4172 wake_up_interruptible(&priv->wait_command_queue);
4173 }
4174 }
4175
4176 /************************** RX-FUNCTIONS ****************************/
4177 /*
4178 * Rx theory of operation
4179 *
4180 * The host allocates 32 DMA target addresses and passes the host address
4181 * to the firmware at register IWL_RFDS_TABLE_LOWER + N * RFD_SIZE where N is
4182 * 0 to 31
4183 *
4184 * Rx Queue Indexes
4185 * The host/firmware share two index registers for managing the Rx buffers.
4186 *
4187 * The READ index maps to the first position that the firmware may be writing
4188 * to -- the driver can read up to (but not including) this position and get
4189 * good data.
4190 * The READ index is managed by the firmware once the card is enabled.
4191 *
4192 * The WRITE index maps to the last position the driver has read from -- the
4193 * position preceding WRITE is the last slot the firmware can place a packet.
4194 *
4195 * The queue is empty (no good data) if WRITE = READ - 1, and is full if
4196 * WRITE = READ.
4197 *
4198 * During initialization the host sets up the READ queue position to the first
4199 * INDEX position, and WRITE to the last (READ - 1 wrapped)
4200 *
4201 * When the firmware places a packet in a buffer it will advance the READ index
4202 * and fire the RX interrupt. The driver can then query the READ index and
4203 * process as many packets as possible, moving the WRITE index forward as it
4204 * resets the Rx queue buffers with new memory.
4205 *
4206 * The management in the driver is as follows:
4207 * + A list of pre-allocated SKBs is stored in iwl->rxq->rx_free. When
4208 * iwl->rxq->free_count drops to or below RX_LOW_WATERMARK, work is scheduled
4209 * to replensish the iwl->rxq->rx_free.
4210 * + In iwl_rx_replenish (scheduled) if 'processed' != 'read' then the
4211 * iwl->rxq is replenished and the READ INDEX is updated (updating the
4212 * 'processed' and 'read' driver indexes as well)
4213 * + A received packet is processed and handed to the kernel network stack,
4214 * detached from the iwl->rxq. The driver 'processed' index is updated.
4215 * + The Host/Firmware iwl->rxq is replenished at tasklet time from the rx_free
4216 * list. If there are no allocated buffers in iwl->rxq->rx_free, the READ
4217 * INDEX is not incremented and iwl->status(RX_STALLED) is set. If there
4218 * were enough free buffers and RX_STALLED is set it is cleared.
4219 *
4220 *
4221 * Driver sequence:
4222 *
4223 * iwl_rx_queue_alloc() Allocates rx_free
4224 * iwl_rx_replenish() Replenishes rx_free list from rx_used, and calls
4225 * iwl_rx_queue_restock
4226 * iwl_rx_queue_restock() Moves available buffers from rx_free into Rx
4227 * queue, updates firmware pointers, and updates
4228 * the WRITE index. If insufficient rx_free buffers
4229 * are available, schedules iwl_rx_replenish
4230 *
4231 * -- enable interrupts --
4232 * ISR - iwl_rx() Detach iwl_rx_mem_buffers from pool up to the
4233 * READ INDEX, detaching the SKB from the pool.
4234 * Moves the packet buffer from queue to rx_used.
4235 * Calls iwl_rx_queue_restock to refill any empty
4236 * slots.
4237 * ...
4238 *
4239 */
4240
4241 /**
4242 * iwl_rx_queue_space - Return number of free slots available in queue.
4243 */
4244 static int iwl_rx_queue_space(const struct iwl_rx_queue *q)
4245 {
4246 int s = q->read - q->write;
4247 if (s <= 0)
4248 s += RX_QUEUE_SIZE;
4249 /* keep some buffer to not confuse full and empty queue */
4250 s -= 2;
4251 if (s < 0)
4252 s = 0;
4253 return s;
4254 }
4255
4256 /**
4257 * iwl_rx_queue_update_write_ptr - Update the write pointer for the RX queue
4258 *
4259 * NOTE: This function has 3945 and 4965 specific code sections
4260 * but is declared in base due to the majority of the
4261 * implementation being the same (only a numeric constant is
4262 * different)
4263 *
4264 */
4265 int iwl_rx_queue_update_write_ptr(struct iwl_priv *priv, struct iwl_rx_queue *q)
4266 {
4267 u32 reg = 0;
4268 int rc = 0;
4269 unsigned long flags;
4270
4271 spin_lock_irqsave(&q->lock, flags);
4272
4273 if (q->need_update == 0)
4274 goto exit_unlock;
4275
4276 if (test_bit(STATUS_POWER_PMI, &priv->status)) {
4277 reg = iwl_read32(priv, CSR_UCODE_DRV_GP1);
4278
4279 if (reg & CSR_UCODE_DRV_GP1_BIT_MAC_SLEEP) {
4280 iwl_set_bit(priv, CSR_GP_CNTRL,
4281 CSR_GP_CNTRL_REG_FLAG_MAC_ACCESS_REQ);
4282 goto exit_unlock;
4283 }
4284
4285 rc = iwl_grab_restricted_access(priv);
4286 if (rc)
4287 goto exit_unlock;
4288
4289 iwl_write_restricted(priv, FH_RSCSR_CHNL0_WPTR,
4290 q->write & ~0x7);
4291 iwl_release_restricted_access(priv);
4292 } else
4293 iwl_write32(priv, FH_RSCSR_CHNL0_WPTR, q->write & ~0x7);
4294
4295
4296 q->need_update = 0;
4297
4298 exit_unlock:
4299 spin_unlock_irqrestore(&q->lock, flags);
4300 return rc;
4301 }
4302
4303 /**
4304 * iwl_dma_addr2rbd_ptr - convert a DMA address to a uCode read buffer pointer.
4305 *
4306 * NOTE: This function has 3945 and 4965 specific code paths in it.
4307 */
4308 static inline __le32 iwl_dma_addr2rbd_ptr(struct iwl_priv *priv,
4309 dma_addr_t dma_addr)
4310 {
4311 return cpu_to_le32((u32)(dma_addr >> 8));
4312 }
4313
4314
4315 /**
4316 * iwl_rx_queue_restock - refill RX queue from pre-allocated pool
4317 *
4318 * If there are slots in the RX queue that need to be restocked,
4319 * and we have free pre-allocated buffers, fill the ranks as much
4320 * as we can pulling from rx_free.
4321 *
4322 * This moves the 'write' index forward to catch up with 'processed', and
4323 * also updates the memory address in the firmware to reference the new
4324 * target buffer.
4325 */
4326 int iwl_rx_queue_restock(struct iwl_priv *priv)
4327 {
4328 struct iwl_rx_queue *rxq = &priv->rxq;
4329 struct list_head *element;
4330 struct iwl_rx_mem_buffer *rxb;
4331 unsigned long flags;
4332 int write, rc;
4333
4334 spin_lock_irqsave(&rxq->lock, flags);
4335 write = rxq->write & ~0x7;
4336 while ((iwl_rx_queue_space(rxq) > 0) && (rxq->free_count)) {
4337 element = rxq->rx_free.next;
4338 rxb = list_entry(element, struct iwl_rx_mem_buffer, list);
4339 list_del(element);
4340 rxq->bd[rxq->write] = iwl_dma_addr2rbd_ptr(priv, rxb->dma_addr);
4341 rxq->queue[rxq->write] = rxb;
4342 rxq->write = (rxq->write + 1) & RX_QUEUE_MASK;
4343 rxq->free_count--;
4344 }
4345 spin_unlock_irqrestore(&rxq->lock, flags);
4346 /* If the pre-allocated buffer pool is dropping low, schedule to
4347 * refill it */
4348 if (rxq->free_count <= RX_LOW_WATERMARK)
4349 queue_work(priv->workqueue, &priv->rx_replenish);
4350
4351
4352 /* If we've added more space for the firmware to place data, tell it */
4353 if ((write != (rxq->write & ~0x7))
4354 || (abs(rxq->write - rxq->read) > 7)) {
4355 spin_lock_irqsave(&rxq->lock, flags);
4356 rxq->need_update = 1;
4357 spin_unlock_irqrestore(&rxq->lock, flags);
4358 rc = iwl_rx_queue_update_write_ptr(priv, rxq);
4359 if (rc)
4360 return rc;
4361 }
4362
4363 return 0;
4364 }
4365
4366 /**
4367 * iwl_rx_replensih - Move all used packet from rx_used to rx_free
4368 *
4369 * When moving to rx_free an SKB is allocated for the slot.
4370 *
4371 * Also restock the Rx queue via iwl_rx_queue_restock.
4372 * This is called as a scheduled work item (except for during intialization)
4373 */
4374 void iwl_rx_replenish(void *data)
4375 {
4376 struct iwl_priv *priv = data;
4377 struct iwl_rx_queue *rxq = &priv->rxq;
4378 struct list_head *element;
4379 struct iwl_rx_mem_buffer *rxb;
4380 unsigned long flags;
4381 spin_lock_irqsave(&rxq->lock, flags);
4382 while (!list_empty(&rxq->rx_used)) {
4383 element = rxq->rx_used.next;
4384 rxb = list_entry(element, struct iwl_rx_mem_buffer, list);
4385 rxb->skb =
4386 alloc_skb(IWL_RX_BUF_SIZE, __GFP_NOWARN | GFP_ATOMIC);
4387 if (!rxb->skb) {
4388 if (net_ratelimit())
4389 printk(KERN_CRIT DRV_NAME
4390 ": Can not allocate SKB buffers\n");
4391 /* We don't reschedule replenish work here -- we will
4392 * call the restock method and if it still needs
4393 * more buffers it will schedule replenish */
4394 break;
4395 }
4396 priv->alloc_rxb_skb++;
4397 list_del(element);
4398 rxb->dma_addr =
4399 pci_map_single(priv->pci_dev, rxb->skb->data,
4400 IWL_RX_BUF_SIZE, PCI_DMA_FROMDEVICE);
4401 list_add_tail(&rxb->list, &rxq->rx_free);
4402 rxq->free_count++;
4403 }
4404 spin_unlock_irqrestore(&rxq->lock, flags);
4405
4406 spin_lock_irqsave(&priv->lock, flags);
4407 iwl_rx_queue_restock(priv);
4408 spin_unlock_irqrestore(&priv->lock, flags);
4409 }
4410
4411 /* Assumes that the skb field of the buffers in 'pool' is kept accurate.
4412 * If an SKB has been detached, the POOL needs to have it's SKB set to NULL
4413 * This free routine walks the list of POOL entries and if SKB is set to
4414 * non NULL it is unmapped and freed
4415 */
4416 void iwl_rx_queue_free(struct iwl_priv *priv, struct iwl_rx_queue *rxq)
4417 {
4418 int i;
4419 for (i = 0; i < RX_QUEUE_SIZE + RX_FREE_BUFFERS; i++) {
4420 if (rxq->pool[i].skb != NULL) {
4421 pci_unmap_single(priv->pci_dev,
4422 rxq->pool[i].dma_addr,
4423 IWL_RX_BUF_SIZE, PCI_DMA_FROMDEVICE);
4424 dev_kfree_skb(rxq->pool[i].skb);
4425 }
4426 }
4427
4428 pci_free_consistent(priv->pci_dev, 4 * RX_QUEUE_SIZE, rxq->bd,
4429 rxq->dma_addr);
4430 rxq->bd = NULL;
4431 }
4432
4433 int iwl_rx_queue_alloc(struct iwl_priv *priv)
4434 {
4435 struct iwl_rx_queue *rxq = &priv->rxq;
4436 struct pci_dev *dev = priv->pci_dev;
4437 int i;
4438
4439 spin_lock_init(&rxq->lock);
4440 INIT_LIST_HEAD(&rxq->rx_free);
4441 INIT_LIST_HEAD(&rxq->rx_used);
4442 rxq->bd = pci_alloc_consistent(dev, 4 * RX_QUEUE_SIZE, &rxq->dma_addr);
4443 if (!rxq->bd)
4444 return -ENOMEM;
4445 /* Fill the rx_used queue with _all_ of the Rx buffers */
4446 for (i = 0; i < RX_FREE_BUFFERS + RX_QUEUE_SIZE; i++)
4447 list_add_tail(&rxq->pool[i].list, &rxq->rx_used);
4448 /* Set us so that we have processed and used all buffers, but have
4449 * not restocked the Rx queue with fresh buffers */
4450 rxq->read = rxq->write = 0;
4451 rxq->free_count = 0;
4452 rxq->need_update = 0;
4453 return 0;
4454 }
4455
4456 void iwl_rx_queue_reset(struct iwl_priv *priv, struct iwl_rx_queue *rxq)
4457 {
4458 unsigned long flags;
4459 int i;
4460 spin_lock_irqsave(&rxq->lock, flags);
4461 INIT_LIST_HEAD(&rxq->rx_free);
4462 INIT_LIST_HEAD(&rxq->rx_used);
4463 /* Fill the rx_used queue with _all_ of the Rx buffers */
4464 for (i = 0; i < RX_FREE_BUFFERS + RX_QUEUE_SIZE; i++) {
4465 /* In the reset function, these buffers may have been allocated
4466 * to an SKB, so we need to unmap and free potential storage */
4467 if (rxq->pool[i].skb != NULL) {
4468 pci_unmap_single(priv->pci_dev,
4469 rxq->pool[i].dma_addr,
4470 IWL_RX_BUF_SIZE, PCI_DMA_FROMDEVICE);
4471 priv->alloc_rxb_skb--;
4472 dev_kfree_skb(rxq->pool[i].skb);
4473 rxq->pool[i].skb = NULL;
4474 }
4475 list_add_tail(&rxq->pool[i].list, &rxq->rx_used);
4476 }
4477
4478 /* Set us so that we have processed and used all buffers, but have
4479 * not restocked the Rx queue with fresh buffers */
4480 rxq->read = rxq->write = 0;
4481 rxq->free_count = 0;
4482 spin_unlock_irqrestore(&rxq->lock, flags);
4483 }
4484
4485 /* Convert linear signal-to-noise ratio into dB */
4486 static u8 ratio2dB[100] = {
4487 /* 0 1 2 3 4 5 6 7 8 9 */
4488 0, 0, 6, 10, 12, 14, 16, 17, 18, 19, /* 00 - 09 */
4489 20, 21, 22, 22, 23, 23, 24, 25, 26, 26, /* 10 - 19 */
4490 26, 26, 26, 27, 27, 28, 28, 28, 29, 29, /* 20 - 29 */
4491 29, 30, 30, 30, 31, 31, 31, 31, 32, 32, /* 30 - 39 */
4492 32, 32, 32, 33, 33, 33, 33, 33, 34, 34, /* 40 - 49 */
4493 34, 34, 34, 34, 35, 35, 35, 35, 35, 35, /* 50 - 59 */
4494 36, 36, 36, 36, 36, 36, 36, 37, 37, 37, /* 60 - 69 */
4495 37, 37, 37, 37, 37, 38, 38, 38, 38, 38, /* 70 - 79 */
4496 38, 38, 38, 38, 38, 39, 39, 39, 39, 39, /* 80 - 89 */
4497 39, 39, 39, 39, 39, 40, 40, 40, 40, 40 /* 90 - 99 */
4498 };
4499
4500 /* Calculates a relative dB value from a ratio of linear
4501 * (i.e. not dB) signal levels.
4502 * Conversion assumes that levels are voltages (20*log), not powers (10*log). */
4503 int iwl_calc_db_from_ratio(int sig_ratio)
4504 {
4505 /* 1000:1 or higher just report as 60 dB */
4506 if (sig_ratio >= 1000)
4507 return 60;
4508
4509 /* 100:1 or higher, divide by 10 and use table,
4510 * add 20 dB to make up for divide by 10 */
4511 if (sig_ratio >= 100)
4512 return (20 + (int)ratio2dB[sig_ratio/10]);
4513
4514 /* We shouldn't see this */
4515 if (sig_ratio < 1)
4516 return 0;
4517
4518 /* Use table for ratios 1:1 - 99:1 */
4519 return (int)ratio2dB[sig_ratio];
4520 }
4521
4522 #define PERFECT_RSSI (-20) /* dBm */
4523 #define WORST_RSSI (-95) /* dBm */
4524 #define RSSI_RANGE (PERFECT_RSSI - WORST_RSSI)
4525
4526 /* Calculate an indication of rx signal quality (a percentage, not dBm!).
4527 * See http://www.ces.clemson.edu/linux/signal_quality.shtml for info
4528 * about formulas used below. */
4529 int iwl_calc_sig_qual(int rssi_dbm, int noise_dbm)
4530 {
4531 int sig_qual;
4532 int degradation = PERFECT_RSSI - rssi_dbm;
4533
4534 /* If we get a noise measurement, use signal-to-noise ratio (SNR)
4535 * as indicator; formula is (signal dbm - noise dbm).
4536 * SNR at or above 40 is a great signal (100%).
4537 * Below that, scale to fit SNR of 0 - 40 dB within 0 - 100% indicator.
4538 * Weakest usable signal is usually 10 - 15 dB SNR. */
4539 if (noise_dbm) {
4540 if (rssi_dbm - noise_dbm >= 40)
4541 return 100;
4542 else if (rssi_dbm < noise_dbm)
4543 return 0;
4544 sig_qual = ((rssi_dbm - noise_dbm) * 5) / 2;
4545
4546 /* Else use just the signal level.
4547 * This formula is a least squares fit of data points collected and
4548 * compared with a reference system that had a percentage (%) display
4549 * for signal quality. */
4550 } else
4551 sig_qual = (100 * (RSSI_RANGE * RSSI_RANGE) - degradation *
4552 (15 * RSSI_RANGE + 62 * degradation)) /
4553 (RSSI_RANGE * RSSI_RANGE);
4554
4555 if (sig_qual > 100)
4556 sig_qual = 100;
4557 else if (sig_qual < 1)
4558 sig_qual = 0;
4559
4560 return sig_qual;
4561 }
4562
4563 /**
4564 * iwl_rx_handle - Main entry function for receiving responses from the uCode
4565 *
4566 * Uses the priv->rx_handlers callback function array to invoke
4567 * the appropriate handlers, including command responses,
4568 * frame-received notifications, and other notifications.
4569 */
4570 static void iwl_rx_handle(struct iwl_priv *priv)
4571 {
4572 struct iwl_rx_mem_buffer *rxb;
4573 struct iwl_rx_packet *pkt;
4574 struct iwl_rx_queue *rxq = &priv->rxq;
4575 u32 r, i;
4576 int reclaim;
4577 unsigned long flags;
4578
4579 r = iwl_hw_get_rx_read(priv);
4580 i = rxq->read;
4581
4582 /* Rx interrupt, but nothing sent from uCode */
4583 if (i == r)
4584 IWL_DEBUG(IWL_DL_RX | IWL_DL_ISR, "r = %d, i = %d\n", r, i);
4585
4586 while (i != r) {
4587 rxb = rxq->queue[i];
4588
4589 /* If an RXB doesn't have a queue slot associated with it
4590 * then a bug has been introduced in the queue refilling
4591 * routines -- catch it here */
4592 BUG_ON(rxb == NULL);
4593
4594 rxq->queue[i] = NULL;
4595
4596 pci_dma_sync_single_for_cpu(priv->pci_dev, rxb->dma_addr,
4597 IWL_RX_BUF_SIZE,
4598 PCI_DMA_FROMDEVICE);
4599 pkt = (struct iwl_rx_packet *)rxb->skb->data;
4600
4601 /* Reclaim a command buffer only if this packet is a response
4602 * to a (driver-originated) command.
4603 * If the packet (e.g. Rx frame) originated from uCode,
4604 * there is no command buffer to reclaim.
4605 * Ucode should set SEQ_RX_FRAME bit if ucode-originated,
4606 * but apparently a few don't get set; catch them here. */
4607 reclaim = !(pkt->hdr.sequence & SEQ_RX_FRAME) &&
4608 (pkt->hdr.cmd != REPLY_RX_PHY_CMD) &&
4609 (pkt->hdr.cmd != REPLY_4965_RX) &&
4610 (pkt->hdr.cmd != REPLY_COMPRESSED_BA) &&
4611 (pkt->hdr.cmd != STATISTICS_NOTIFICATION) &&
4612 (pkt->hdr.cmd != REPLY_TX);
4613
4614 /* Based on type of command response or notification,
4615 * handle those that need handling via function in
4616 * rx_handlers table. See iwl_setup_rx_handlers() */
4617 if (priv->rx_handlers[pkt->hdr.cmd]) {
4618 IWL_DEBUG(IWL_DL_HOST_COMMAND | IWL_DL_RX | IWL_DL_ISR,
4619 "r = %d, i = %d, %s, 0x%02x\n", r, i,
4620 get_cmd_string(pkt->hdr.cmd), pkt->hdr.cmd);
4621 priv->rx_handlers[pkt->hdr.cmd] (priv, rxb);
4622 } else {
4623 /* No handling needed */
4624 IWL_DEBUG(IWL_DL_HOST_COMMAND | IWL_DL_RX | IWL_DL_ISR,
4625 "r %d i %d No handler needed for %s, 0x%02x\n",
4626 r, i, get_cmd_string(pkt->hdr.cmd),
4627 pkt->hdr.cmd);
4628 }
4629
4630 if (reclaim) {
4631 /* Invoke any callbacks, transfer the skb to caller,
4632 * and fire off the (possibly) blocking iwl_send_cmd()
4633 * as we reclaim the driver command queue */
4634 if (rxb && rxb->skb)
4635 iwl_tx_cmd_complete(priv, rxb);
4636 else
4637 IWL_WARNING("Claim null rxb?\n");
4638 }
4639
4640 /* For now we just don't re-use anything. We can tweak this
4641 * later to try and re-use notification packets and SKBs that
4642 * fail to Rx correctly */
4643 if (rxb->skb != NULL) {
4644 priv->alloc_rxb_skb--;
4645 dev_kfree_skb_any(rxb->skb);
4646 rxb->skb = NULL;
4647 }
4648
4649 pci_unmap_single(priv->pci_dev, rxb->dma_addr,
4650 IWL_RX_BUF_SIZE, PCI_DMA_FROMDEVICE);
4651 spin_lock_irqsave(&rxq->lock, flags);
4652 list_add_tail(&rxb->list, &priv->rxq.rx_used);
4653 spin_unlock_irqrestore(&rxq->lock, flags);
4654 i = (i + 1) & RX_QUEUE_MASK;
4655 }
4656
4657 /* Backtrack one entry */
4658 priv->rxq.read = i;
4659 iwl_rx_queue_restock(priv);
4660 }
4661
4662 int iwl_tx_queue_update_write_ptr(struct iwl_priv *priv,
4663 struct iwl_tx_queue *txq)
4664 {
4665 u32 reg = 0;
4666 int rc = 0;
4667 int txq_id = txq->q.id;
4668
4669 if (txq->need_update == 0)
4670 return rc;
4671
4672 /* if we're trying to save power */
4673 if (test_bit(STATUS_POWER_PMI, &priv->status)) {
4674 /* wake up nic if it's powered down ...
4675 * uCode will wake up, and interrupt us again, so next
4676 * time we'll skip this part. */
4677 reg = iwl_read32(priv, CSR_UCODE_DRV_GP1);
4678
4679 if (reg & CSR_UCODE_DRV_GP1_BIT_MAC_SLEEP) {
4680 IWL_DEBUG_INFO("Requesting wakeup, GP1 = 0x%x\n", reg);
4681 iwl_set_bit(priv, CSR_GP_CNTRL,
4682 CSR_GP_CNTRL_REG_FLAG_MAC_ACCESS_REQ);
4683 return rc;
4684 }
4685
4686 /* restore this queue's parameters in nic hardware. */
4687 rc = iwl_grab_restricted_access(priv);
4688 if (rc)
4689 return rc;
4690 iwl_write_restricted(priv, HBUS_TARG_WRPTR,
4691 txq->q.first_empty | (txq_id << 8));
4692 iwl_release_restricted_access(priv);
4693
4694 /* else not in power-save mode, uCode will never sleep when we're
4695 * trying to tx (during RFKILL, we're not trying to tx). */
4696 } else
4697 iwl_write32(priv, HBUS_TARG_WRPTR,
4698 txq->q.first_empty | (txq_id << 8));
4699
4700 txq->need_update = 0;
4701
4702 return rc;
4703 }
4704
4705 #ifdef CONFIG_IWLWIFI_DEBUG
4706 static void iwl_print_rx_config_cmd(struct iwl_rxon_cmd *rxon)
4707 {
4708 DECLARE_MAC_BUF(mac);
4709
4710 IWL_DEBUG_RADIO("RX CONFIG:\n");
4711 iwl_print_hex_dump(IWL_DL_RADIO, (u8 *) rxon, sizeof(*rxon));
4712 IWL_DEBUG_RADIO("u16 channel: 0x%x\n", le16_to_cpu(rxon->channel));
4713 IWL_DEBUG_RADIO("u32 flags: 0x%08X\n", le32_to_cpu(rxon->flags));
4714 IWL_DEBUG_RADIO("u32 filter_flags: 0x%08x\n",
4715 le32_to_cpu(rxon->filter_flags));
4716 IWL_DEBUG_RADIO("u8 dev_type: 0x%x\n", rxon->dev_type);
4717 IWL_DEBUG_RADIO("u8 ofdm_basic_rates: 0x%02x\n",
4718 rxon->ofdm_basic_rates);
4719 IWL_DEBUG_RADIO("u8 cck_basic_rates: 0x%02x\n", rxon->cck_basic_rates);
4720 IWL_DEBUG_RADIO("u8[6] node_addr: %s\n",
4721 print_mac(mac, rxon->node_addr));
4722 IWL_DEBUG_RADIO("u8[6] bssid_addr: %s\n",
4723 print_mac(mac, rxon->bssid_addr));
4724 IWL_DEBUG_RADIO("u16 assoc_id: 0x%x\n", le16_to_cpu(rxon->assoc_id));
4725 }
4726 #endif
4727
4728 static void iwl_enable_interrupts(struct iwl_priv *priv)
4729 {
4730 IWL_DEBUG_ISR("Enabling interrupts\n");
4731 set_bit(STATUS_INT_ENABLED, &priv->status);
4732 iwl_write32(priv, CSR_INT_MASK, CSR_INI_SET_MASK);
4733 }
4734
4735 static inline void iwl_disable_interrupts(struct iwl_priv *priv)
4736 {
4737 clear_bit(STATUS_INT_ENABLED, &priv->status);
4738
4739 /* disable interrupts from uCode/NIC to host */
4740 iwl_write32(priv, CSR_INT_MASK, 0x00000000);
4741
4742 /* acknowledge/clear/reset any interrupts still pending
4743 * from uCode or flow handler (Rx/Tx DMA) */
4744 iwl_write32(priv, CSR_INT, 0xffffffff);
4745 iwl_write32(priv, CSR_FH_INT_STATUS, 0xffffffff);
4746 IWL_DEBUG_ISR("Disabled interrupts\n");
4747 }
4748
4749 static const char *desc_lookup(int i)
4750 {
4751 switch (i) {
4752 case 1:
4753 return "FAIL";
4754 case 2:
4755 return "BAD_PARAM";
4756 case 3:
4757 return "BAD_CHECKSUM";
4758 case 4:
4759 return "NMI_INTERRUPT";
4760 case 5:
4761 return "SYSASSERT";
4762 case 6:
4763 return "FATAL_ERROR";
4764 }
4765
4766 return "UNKNOWN";
4767 }
4768
4769 #define ERROR_START_OFFSET (1 * sizeof(u32))
4770 #define ERROR_ELEM_SIZE (7 * sizeof(u32))
4771
4772 static void iwl_dump_nic_error_log(struct iwl_priv *priv)
4773 {
4774 u32 data2, line;
4775 u32 desc, time, count, base, data1;
4776 u32 blink1, blink2, ilink1, ilink2;
4777 int rc;
4778
4779 base = le32_to_cpu(priv->card_alive.error_event_table_ptr);
4780
4781 if (!iwl_hw_valid_rtc_data_addr(base)) {
4782 IWL_ERROR("Not valid error log pointer 0x%08X\n", base);
4783 return;
4784 }
4785
4786 rc = iwl_grab_restricted_access(priv);
4787 if (rc) {
4788 IWL_WARNING("Can not read from adapter at this time.\n");
4789 return;
4790 }
4791
4792 count = iwl_read_restricted_mem(priv, base);
4793
4794 if (ERROR_START_OFFSET <= count * ERROR_ELEM_SIZE) {
4795 IWL_ERROR("Start IWL Error Log Dump:\n");
4796 IWL_ERROR("Status: 0x%08lX, Config: %08X count: %d\n",
4797 priv->status, priv->config, count);
4798 }
4799
4800 desc = iwl_read_restricted_mem(priv, base + 1 * sizeof(u32));
4801 blink1 = iwl_read_restricted_mem(priv, base + 3 * sizeof(u32));
4802 blink2 = iwl_read_restricted_mem(priv, base + 4 * sizeof(u32));
4803 ilink1 = iwl_read_restricted_mem(priv, base + 5 * sizeof(u32));
4804 ilink2 = iwl_read_restricted_mem(priv, base + 6 * sizeof(u32));
4805 data1 = iwl_read_restricted_mem(priv, base + 7 * sizeof(u32));
4806 data2 = iwl_read_restricted_mem(priv, base + 8 * sizeof(u32));
4807 line = iwl_read_restricted_mem(priv, base + 9 * sizeof(u32));
4808 time = iwl_read_restricted_mem(priv, base + 11 * sizeof(u32));
4809
4810 IWL_ERROR("Desc Time "
4811 "data1 data2 line\n");
4812 IWL_ERROR("%-13s (#%d) %010u 0x%08X 0x%08X %u\n",
4813 desc_lookup(desc), desc, time, data1, data2, line);
4814 IWL_ERROR("blink1 blink2 ilink1 ilink2\n");
4815 IWL_ERROR("0x%05X 0x%05X 0x%05X 0x%05X\n", blink1, blink2,
4816 ilink1, ilink2);
4817
4818 iwl_release_restricted_access(priv);
4819 }
4820
4821 #define EVENT_START_OFFSET (4 * sizeof(u32))
4822
4823 /**
4824 * iwl_print_event_log - Dump error event log to syslog
4825 *
4826 * NOTE: Must be called with iwl_grab_restricted_access() already obtained!
4827 */
4828 static void iwl_print_event_log(struct iwl_priv *priv, u32 start_idx,
4829 u32 num_events, u32 mode)
4830 {
4831 u32 i;
4832 u32 base; /* SRAM byte address of event log header */
4833 u32 event_size; /* 2 u32s, or 3 u32s if timestamp recorded */
4834 u32 ptr; /* SRAM byte address of log data */
4835 u32 ev, time, data; /* event log data */
4836
4837 if (num_events == 0)
4838 return;
4839
4840 base = le32_to_cpu(priv->card_alive.log_event_table_ptr);
4841
4842 if (mode == 0)
4843 event_size = 2 * sizeof(u32);
4844 else
4845 event_size = 3 * sizeof(u32);
4846
4847 ptr = base + EVENT_START_OFFSET + (start_idx * event_size);
4848
4849 /* "time" is actually "data" for mode 0 (no timestamp).
4850 * place event id # at far right for easier visual parsing. */
4851 for (i = 0; i < num_events; i++) {
4852 ev = iwl_read_restricted_mem(priv, ptr);
4853 ptr += sizeof(u32);
4854 time = iwl_read_restricted_mem(priv, ptr);
4855 ptr += sizeof(u32);
4856 if (mode == 0)
4857 IWL_ERROR("0x%08x\t%04u\n", time, ev); /* data, ev */
4858 else {
4859 data = iwl_read_restricted_mem(priv, ptr);
4860 ptr += sizeof(u32);
4861 IWL_ERROR("%010u\t0x%08x\t%04u\n", time, data, ev);
4862 }
4863 }
4864 }
4865
4866 static void iwl_dump_nic_event_log(struct iwl_priv *priv)
4867 {
4868 int rc;
4869 u32 base; /* SRAM byte address of event log header */
4870 u32 capacity; /* event log capacity in # entries */
4871 u32 mode; /* 0 - no timestamp, 1 - timestamp recorded */
4872 u32 num_wraps; /* # times uCode wrapped to top of log */
4873 u32 next_entry; /* index of next entry to be written by uCode */
4874 u32 size; /* # entries that we'll print */
4875
4876 base = le32_to_cpu(priv->card_alive.log_event_table_ptr);
4877 if (!iwl_hw_valid_rtc_data_addr(base)) {
4878 IWL_ERROR("Invalid event log pointer 0x%08X\n", base);
4879 return;
4880 }
4881
4882 rc = iwl_grab_restricted_access(priv);
4883 if (rc) {
4884 IWL_WARNING("Can not read from adapter at this time.\n");
4885 return;
4886 }
4887
4888 /* event log header */
4889 capacity = iwl_read_restricted_mem(priv, base);
4890 mode = iwl_read_restricted_mem(priv, base + (1 * sizeof(u32)));
4891 num_wraps = iwl_read_restricted_mem(priv, base + (2 * sizeof(u32)));
4892 next_entry = iwl_read_restricted_mem(priv, base + (3 * sizeof(u32)));
4893
4894 size = num_wraps ? capacity : next_entry;
4895
4896 /* bail out if nothing in log */
4897 if (size == 0) {
4898 IWL_ERROR("Start IWL Event Log Dump: nothing in log\n");
4899 iwl_release_restricted_access(priv);
4900 return;
4901 }
4902
4903 IWL_ERROR("Start IWL Event Log Dump: display count %d, wraps %d\n",
4904 size, num_wraps);
4905
4906 /* if uCode has wrapped back to top of log, start at the oldest entry,
4907 * i.e the next one that uCode would fill. */
4908 if (num_wraps)
4909 iwl_print_event_log(priv, next_entry,
4910 capacity - next_entry, mode);
4911
4912 /* (then/else) start at top of log */
4913 iwl_print_event_log(priv, 0, next_entry, mode);
4914
4915 iwl_release_restricted_access(priv);
4916 }
4917
4918 /**
4919 * iwl_irq_handle_error - called for HW or SW error interrupt from card
4920 */
4921 static void iwl_irq_handle_error(struct iwl_priv *priv)
4922 {
4923 /* Set the FW error flag -- cleared on iwl_down */
4924 set_bit(STATUS_FW_ERROR, &priv->status);
4925
4926 /* Cancel currently queued command. */
4927 clear_bit(STATUS_HCMD_ACTIVE, &priv->status);
4928
4929 #ifdef CONFIG_IWLWIFI_DEBUG
4930 if (iwl_debug_level & IWL_DL_FW_ERRORS) {
4931 iwl_dump_nic_error_log(priv);
4932 iwl_dump_nic_event_log(priv);
4933 iwl_print_rx_config_cmd(&priv->staging_rxon);
4934 }
4935 #endif
4936
4937 wake_up_interruptible(&priv->wait_command_queue);
4938
4939 /* Keep the restart process from trying to send host
4940 * commands by clearing the INIT status bit */
4941 clear_bit(STATUS_READY, &priv->status);
4942
4943 if (!test_bit(STATUS_EXIT_PENDING, &priv->status)) {
4944 IWL_DEBUG(IWL_DL_INFO | IWL_DL_FW_ERRORS,
4945 "Restarting adapter due to uCode error.\n");
4946
4947 if (iwl_is_associated(priv)) {
4948 memcpy(&priv->recovery_rxon, &priv->active_rxon,
4949 sizeof(priv->recovery_rxon));
4950 priv->error_recovering = 1;
4951 }
4952 queue_work(priv->workqueue, &priv->restart);
4953 }
4954 }
4955
4956 static void iwl_error_recovery(struct iwl_priv *priv)
4957 {
4958 unsigned long flags;
4959
4960 memcpy(&priv->staging_rxon, &priv->recovery_rxon,
4961 sizeof(priv->staging_rxon));
4962 priv->staging_rxon.filter_flags &= ~RXON_FILTER_ASSOC_MSK;
4963 iwl_commit_rxon(priv);
4964
4965 iwl_rxon_add_station(priv, priv->bssid, 1);
4966
4967 spin_lock_irqsave(&priv->lock, flags);
4968 priv->assoc_id = le16_to_cpu(priv->staging_rxon.assoc_id);
4969 priv->error_recovering = 0;
4970 spin_unlock_irqrestore(&priv->lock, flags);
4971 }
4972
4973 static void iwl_irq_tasklet(struct iwl_priv *priv)
4974 {
4975 u32 inta, handled = 0;
4976 u32 inta_fh;
4977 unsigned long flags;
4978 #ifdef CONFIG_IWLWIFI_DEBUG
4979 u32 inta_mask;
4980 #endif
4981
4982 spin_lock_irqsave(&priv->lock, flags);
4983
4984 /* Ack/clear/reset pending uCode interrupts.
4985 * Note: Some bits in CSR_INT are "OR" of bits in CSR_FH_INT_STATUS,
4986 * and will clear only when CSR_FH_INT_STATUS gets cleared. */
4987 inta = iwl_read32(priv, CSR_INT);
4988 iwl_write32(priv, CSR_INT, inta);
4989
4990 /* Ack/clear/reset pending flow-handler (DMA) interrupts.
4991 * Any new interrupts that happen after this, either while we're
4992 * in this tasklet, or later, will show up in next ISR/tasklet. */
4993 inta_fh = iwl_read32(priv, CSR_FH_INT_STATUS);
4994 iwl_write32(priv, CSR_FH_INT_STATUS, inta_fh);
4995
4996 #ifdef CONFIG_IWLWIFI_DEBUG
4997 if (iwl_debug_level & IWL_DL_ISR) {
4998 inta_mask = iwl_read32(priv, CSR_INT_MASK); /* just for debug */
4999 IWL_DEBUG_ISR("inta 0x%08x, enabled 0x%08x, fh 0x%08x\n",
5000 inta, inta_mask, inta_fh);
5001 }
5002 #endif
5003
5004 /* Since CSR_INT and CSR_FH_INT_STATUS reads and clears are not
5005 * atomic, make sure that inta covers all the interrupts that
5006 * we've discovered, even if FH interrupt came in just after
5007 * reading CSR_INT. */
5008 if (inta_fh & CSR_FH_INT_RX_MASK)
5009 inta |= CSR_INT_BIT_FH_RX;
5010 if (inta_fh & CSR_FH_INT_TX_MASK)
5011 inta |= CSR_INT_BIT_FH_TX;
5012
5013 /* Now service all interrupt bits discovered above. */
5014 if (inta & CSR_INT_BIT_HW_ERR) {
5015 IWL_ERROR("Microcode HW error detected. Restarting.\n");
5016
5017 /* Tell the device to stop sending interrupts */
5018 iwl_disable_interrupts(priv);
5019
5020 iwl_irq_handle_error(priv);
5021
5022 handled |= CSR_INT_BIT_HW_ERR;
5023
5024 spin_unlock_irqrestore(&priv->lock, flags);
5025
5026 return;
5027 }
5028
5029 #ifdef CONFIG_IWLWIFI_DEBUG
5030 if (iwl_debug_level & (IWL_DL_ISR)) {
5031 /* NIC fires this, but we don't use it, redundant with WAKEUP */
5032 if (inta & CSR_INT_BIT_MAC_CLK_ACTV)
5033 IWL_DEBUG_ISR("Microcode started or stopped.\n");
5034
5035 /* Alive notification via Rx interrupt will do the real work */
5036 if (inta & CSR_INT_BIT_ALIVE)
5037 IWL_DEBUG_ISR("Alive interrupt\n");
5038 }
5039 #endif
5040 /* Safely ignore these bits for debug checks below */
5041 inta &= ~(CSR_INT_BIT_MAC_CLK_ACTV | CSR_INT_BIT_ALIVE);
5042
5043 /* HW RF KILL switch toggled (4965 only) */
5044 if (inta & CSR_INT_BIT_RF_KILL) {
5045 int hw_rf_kill = 0;
5046 if (!(iwl_read32(priv, CSR_GP_CNTRL) &
5047 CSR_GP_CNTRL_REG_FLAG_HW_RF_KILL_SW))
5048 hw_rf_kill = 1;
5049
5050 IWL_DEBUG(IWL_DL_INFO | IWL_DL_RF_KILL | IWL_DL_ISR,
5051 "RF_KILL bit toggled to %s.\n",
5052 hw_rf_kill ? "disable radio":"enable radio");
5053
5054 /* Queue restart only if RF_KILL switch was set to "kill"
5055 * when we loaded driver, and is now set to "enable".
5056 * After we're Alive, RF_KILL gets handled by
5057 * iwl_rx_card_state_notif() */
5058 if (!hw_rf_kill && !test_bit(STATUS_ALIVE, &priv->status))
5059 queue_work(priv->workqueue, &priv->restart);
5060
5061 handled |= CSR_INT_BIT_RF_KILL;
5062 }
5063
5064 /* Chip got too hot and stopped itself (4965 only) */
5065 if (inta & CSR_INT_BIT_CT_KILL) {
5066 IWL_ERROR("Microcode CT kill error detected.\n");
5067 handled |= CSR_INT_BIT_CT_KILL;
5068 }
5069
5070 /* Error detected by uCode */
5071 if (inta & CSR_INT_BIT_SW_ERR) {
5072 IWL_ERROR("Microcode SW error detected. Restarting 0x%X.\n",
5073 inta);
5074 iwl_irq_handle_error(priv);
5075 handled |= CSR_INT_BIT_SW_ERR;
5076 }
5077
5078 /* uCode wakes up after power-down sleep */
5079 if (inta & CSR_INT_BIT_WAKEUP) {
5080 IWL_DEBUG_ISR("Wakeup interrupt\n");
5081 iwl_rx_queue_update_write_ptr(priv, &priv->rxq);
5082 iwl_tx_queue_update_write_ptr(priv, &priv->txq[0]);
5083 iwl_tx_queue_update_write_ptr(priv, &priv->txq[1]);
5084 iwl_tx_queue_update_write_ptr(priv, &priv->txq[2]);
5085 iwl_tx_queue_update_write_ptr(priv, &priv->txq[3]);
5086 iwl_tx_queue_update_write_ptr(priv, &priv->txq[4]);
5087 iwl_tx_queue_update_write_ptr(priv, &priv->txq[5]);
5088
5089 handled |= CSR_INT_BIT_WAKEUP;
5090 }
5091
5092 /* All uCode command responses, including Tx command responses,
5093 * Rx "responses" (frame-received notification), and other
5094 * notifications from uCode come through here*/
5095 if (inta & (CSR_INT_BIT_FH_RX | CSR_INT_BIT_SW_RX)) {
5096 iwl_rx_handle(priv);
5097 handled |= (CSR_INT_BIT_FH_RX | CSR_INT_BIT_SW_RX);
5098 }
5099
5100 if (inta & CSR_INT_BIT_FH_TX) {
5101 IWL_DEBUG_ISR("Tx interrupt\n");
5102 handled |= CSR_INT_BIT_FH_TX;
5103 }
5104
5105 if (inta & ~handled)
5106 IWL_ERROR("Unhandled INTA bits 0x%08x\n", inta & ~handled);
5107
5108 if (inta & ~CSR_INI_SET_MASK) {
5109 IWL_WARNING("Disabled INTA bits 0x%08x were pending\n",
5110 inta & ~CSR_INI_SET_MASK);
5111 IWL_WARNING(" with FH_INT = 0x%08x\n", inta_fh);
5112 }
5113
5114 /* Re-enable all interrupts */
5115 iwl_enable_interrupts(priv);
5116
5117 #ifdef CONFIG_IWLWIFI_DEBUG
5118 if (iwl_debug_level & (IWL_DL_ISR)) {
5119 inta = iwl_read32(priv, CSR_INT);
5120 inta_mask = iwl_read32(priv, CSR_INT_MASK);
5121 inta_fh = iwl_read32(priv, CSR_FH_INT_STATUS);
5122 IWL_DEBUG_ISR("End inta 0x%08x, enabled 0x%08x, fh 0x%08x, "
5123 "flags 0x%08lx\n", inta, inta_mask, inta_fh, flags);
5124 }
5125 #endif
5126 spin_unlock_irqrestore(&priv->lock, flags);
5127 }
5128
5129 static irqreturn_t iwl_isr(int irq, void *data)
5130 {
5131 struct iwl_priv *priv = data;
5132 u32 inta, inta_mask;
5133 u32 inta_fh;
5134 if (!priv)
5135 return IRQ_NONE;
5136
5137 spin_lock(&priv->lock);
5138
5139 /* Disable (but don't clear!) interrupts here to avoid
5140 * back-to-back ISRs and sporadic interrupts from our NIC.
5141 * If we have something to service, the tasklet will re-enable ints.
5142 * If we *don't* have something, we'll re-enable before leaving here. */
5143 inta_mask = iwl_read32(priv, CSR_INT_MASK); /* just for debug */
5144 iwl_write32(priv, CSR_INT_MASK, 0x00000000);
5145
5146 /* Discover which interrupts are active/pending */
5147 inta = iwl_read32(priv, CSR_INT);
5148 inta_fh = iwl_read32(priv, CSR_FH_INT_STATUS);
5149
5150 /* Ignore interrupt if there's nothing in NIC to service.
5151 * This may be due to IRQ shared with another device,
5152 * or due to sporadic interrupts thrown from our NIC. */
5153 if (!inta && !inta_fh) {
5154 IWL_DEBUG_ISR("Ignore interrupt, inta == 0, inta_fh == 0\n");
5155 goto none;
5156 }
5157
5158 if ((inta == 0xFFFFFFFF) || ((inta & 0xFFFFFFF0) == 0xa5a5a5a0)) {
5159 /* Hardware disappeared. It might have already raised
5160 * an interrupt */
5161 IWL_WARNING("HARDWARE GONE?? INTA == 0x%080x\n", inta);
5162 goto unplugged;
5163 }
5164
5165 IWL_DEBUG_ISR("ISR inta 0x%08x, enabled 0x%08x, fh 0x%08x\n",
5166 inta, inta_mask, inta_fh);
5167
5168 /* iwl_irq_tasklet() will service interrupts and re-enable them */
5169 tasklet_schedule(&priv->irq_tasklet);
5170
5171 unplugged:
5172 spin_unlock(&priv->lock);
5173 return IRQ_HANDLED;
5174
5175 none:
5176 /* re-enable interrupts here since we don't have anything to service. */
5177 iwl_enable_interrupts(priv);
5178 spin_unlock(&priv->lock);
5179 return IRQ_NONE;
5180 }
5181
5182 /************************** EEPROM BANDS ****************************
5183 *
5184 * The iwl_eeprom_band definitions below provide the mapping from the
5185 * EEPROM contents to the specific channel number supported for each
5186 * band.
5187 *
5188 * For example, iwl_priv->eeprom.band_3_channels[4] from the band_3
5189 * definition below maps to physical channel 42 in the 5.2GHz spectrum.
5190 * The specific geography and calibration information for that channel
5191 * is contained in the eeprom map itself.
5192 *
5193 * During init, we copy the eeprom information and channel map
5194 * information into priv->channel_info_24/52 and priv->channel_map_24/52
5195 *
5196 * channel_map_24/52 provides the index in the channel_info array for a
5197 * given channel. We have to have two separate maps as there is channel
5198 * overlap with the 2.4GHz and 5.2GHz spectrum as seen in band_1 and
5199 * band_2
5200 *
5201 * A value of 0xff stored in the channel_map indicates that the channel
5202 * is not supported by the hardware at all.
5203 *
5204 * A value of 0xfe in the channel_map indicates that the channel is not
5205 * valid for Tx with the current hardware. This means that
5206 * while the system can tune and receive on a given channel, it may not
5207 * be able to associate or transmit any frames on that
5208 * channel. There is no corresponding channel information for that
5209 * entry.
5210 *
5211 *********************************************************************/
5212
5213 /* 2.4 GHz */
5214 static const u8 iwl_eeprom_band_1[14] = {
5215 1, 2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13, 14
5216 };
5217
5218 /* 5.2 GHz bands */
5219 static const u8 iwl_eeprom_band_2[] = {
5220 183, 184, 185, 187, 188, 189, 192, 196, 7, 8, 11, 12, 16
5221 };
5222
5223 static const u8 iwl_eeprom_band_3[] = { /* 5205-5320MHz */
5224 34, 36, 38, 40, 42, 44, 46, 48, 52, 56, 60, 64
5225 };
5226
5227 static const u8 iwl_eeprom_band_4[] = { /* 5500-5700MHz */
5228 100, 104, 108, 112, 116, 120, 124, 128, 132, 136, 140
5229 };
5230
5231 static const u8 iwl_eeprom_band_5[] = { /* 5725-5825MHz */
5232 145, 149, 153, 157, 161, 165
5233 };
5234
5235 static u8 iwl_eeprom_band_6[] = { /* 2.4 FAT channel */
5236 1, 2, 3, 4, 5, 6, 7
5237 };
5238
5239 static u8 iwl_eeprom_band_7[] = { /* 5.2 FAT channel */
5240 36, 44, 52, 60, 100, 108, 116, 124, 132, 149, 157
5241 };
5242
5243 static void iwl_init_band_reference(const struct iwl_priv *priv, int band,
5244 int *eeprom_ch_count,
5245 const struct iwl_eeprom_channel
5246 **eeprom_ch_info,
5247 const u8 **eeprom_ch_index)
5248 {
5249 switch (band) {
5250 case 1: /* 2.4GHz band */
5251 *eeprom_ch_count = ARRAY_SIZE(iwl_eeprom_band_1);
5252 *eeprom_ch_info = priv->eeprom.band_1_channels;
5253 *eeprom_ch_index = iwl_eeprom_band_1;
5254 break;
5255 case 2: /* 5.2GHz band */
5256 *eeprom_ch_count = ARRAY_SIZE(iwl_eeprom_band_2);
5257 *eeprom_ch_info = priv->eeprom.band_2_channels;
5258 *eeprom_ch_index = iwl_eeprom_band_2;
5259 break;
5260 case 3: /* 5.2GHz band */
5261 *eeprom_ch_count = ARRAY_SIZE(iwl_eeprom_band_3);
5262 *eeprom_ch_info = priv->eeprom.band_3_channels;
5263 *eeprom_ch_index = iwl_eeprom_band_3;
5264 break;
5265 case 4: /* 5.2GHz band */
5266 *eeprom_ch_count = ARRAY_SIZE(iwl_eeprom_band_4);
5267 *eeprom_ch_info = priv->eeprom.band_4_channels;
5268 *eeprom_ch_index = iwl_eeprom_band_4;
5269 break;
5270 case 5: /* 5.2GHz band */
5271 *eeprom_ch_count = ARRAY_SIZE(iwl_eeprom_band_5);
5272 *eeprom_ch_info = priv->eeprom.band_5_channels;
5273 *eeprom_ch_index = iwl_eeprom_band_5;
5274 break;
5275 case 6:
5276 *eeprom_ch_count = ARRAY_SIZE(iwl_eeprom_band_6);
5277 *eeprom_ch_info = priv->eeprom.band_24_channels;
5278 *eeprom_ch_index = iwl_eeprom_band_6;
5279 break;
5280 case 7:
5281 *eeprom_ch_count = ARRAY_SIZE(iwl_eeprom_band_7);
5282 *eeprom_ch_info = priv->eeprom.band_52_channels;
5283 *eeprom_ch_index = iwl_eeprom_band_7;
5284 break;
5285 default:
5286 BUG();
5287 return;
5288 }
5289 }
5290
5291 const struct iwl_channel_info *iwl_get_channel_info(const struct iwl_priv *priv,
5292 int phymode, u16 channel)
5293 {
5294 int i;
5295
5296 switch (phymode) {
5297 case MODE_IEEE80211A:
5298 for (i = 14; i < priv->channel_count; i++) {
5299 if (priv->channel_info[i].channel == channel)
5300 return &priv->channel_info[i];
5301 }
5302 break;
5303
5304 case MODE_IEEE80211B:
5305 case MODE_IEEE80211G:
5306 if (channel >= 1 && channel <= 14)
5307 return &priv->channel_info[channel - 1];
5308 break;
5309
5310 }
5311
5312 return NULL;
5313 }
5314
5315 #define CHECK_AND_PRINT(x) ((eeprom_ch_info[ch].flags & EEPROM_CHANNEL_##x) \
5316 ? # x " " : "")
5317
5318 static int iwl_init_channel_map(struct iwl_priv *priv)
5319 {
5320 int eeprom_ch_count = 0;
5321 const u8 *eeprom_ch_index = NULL;
5322 const struct iwl_eeprom_channel *eeprom_ch_info = NULL;
5323 int band, ch;
5324 struct iwl_channel_info *ch_info;
5325
5326 if (priv->channel_count) {
5327 IWL_DEBUG_INFO("Channel map already initialized.\n");
5328 return 0;
5329 }
5330
5331 if (priv->eeprom.version < 0x2f) {
5332 IWL_WARNING("Unsupported EEPROM version: 0x%04X\n",
5333 priv->eeprom.version);
5334 return -EINVAL;
5335 }
5336
5337 IWL_DEBUG_INFO("Initializing regulatory info from EEPROM\n");
5338
5339 priv->channel_count =
5340 ARRAY_SIZE(iwl_eeprom_band_1) +
5341 ARRAY_SIZE(iwl_eeprom_band_2) +
5342 ARRAY_SIZE(iwl_eeprom_band_3) +
5343 ARRAY_SIZE(iwl_eeprom_band_4) +
5344 ARRAY_SIZE(iwl_eeprom_band_5);
5345
5346 IWL_DEBUG_INFO("Parsing data for %d channels.\n", priv->channel_count);
5347
5348 priv->channel_info = kzalloc(sizeof(struct iwl_channel_info) *
5349 priv->channel_count, GFP_KERNEL);
5350 if (!priv->channel_info) {
5351 IWL_ERROR("Could not allocate channel_info\n");
5352 priv->channel_count = 0;
5353 return -ENOMEM;
5354 }
5355
5356 ch_info = priv->channel_info;
5357
5358 /* Loop through the 5 EEPROM bands adding them in order to the
5359 * channel map we maintain (that contains additional information than
5360 * what just in the EEPROM) */
5361 for (band = 1; band <= 5; band++) {
5362
5363 iwl_init_band_reference(priv, band, &eeprom_ch_count,
5364 &eeprom_ch_info, &eeprom_ch_index);
5365
5366 /* Loop through each band adding each of the channels */
5367 for (ch = 0; ch < eeprom_ch_count; ch++) {
5368 ch_info->channel = eeprom_ch_index[ch];
5369 ch_info->phymode = (band == 1) ? MODE_IEEE80211B :
5370 MODE_IEEE80211A;
5371
5372 /* permanently store EEPROM's channel regulatory flags
5373 * and max power in channel info database. */
5374 ch_info->eeprom = eeprom_ch_info[ch];
5375
5376 /* Copy the run-time flags so they are there even on
5377 * invalid channels */
5378 ch_info->flags = eeprom_ch_info[ch].flags;
5379
5380 if (!(is_channel_valid(ch_info))) {
5381 IWL_DEBUG_INFO("Ch. %d Flags %x [%sGHz] - "
5382 "No traffic\n",
5383 ch_info->channel,
5384 ch_info->flags,
5385 is_channel_a_band(ch_info) ?
5386 "5.2" : "2.4");
5387 ch_info++;
5388 continue;
5389 }
5390
5391 /* Initialize regulatory-based run-time data */
5392 ch_info->max_power_avg = ch_info->curr_txpow =
5393 eeprom_ch_info[ch].max_power_avg;
5394 ch_info->scan_power = eeprom_ch_info[ch].max_power_avg;
5395 ch_info->min_power = 0;
5396
5397 IWL_DEBUG_INFO("Ch. %d [%sGHz] %s%s%s%s%s%s(0x%02x"
5398 " %ddBm): Ad-Hoc %ssupported\n",
5399 ch_info->channel,
5400 is_channel_a_band(ch_info) ?
5401 "5.2" : "2.4",
5402 CHECK_AND_PRINT(IBSS),
5403 CHECK_AND_PRINT(ACTIVE),
5404 CHECK_AND_PRINT(RADAR),
5405 CHECK_AND_PRINT(WIDE),
5406 CHECK_AND_PRINT(NARROW),
5407 CHECK_AND_PRINT(DFS),
5408 eeprom_ch_info[ch].flags,
5409 eeprom_ch_info[ch].max_power_avg,
5410 ((eeprom_ch_info[ch].
5411 flags & EEPROM_CHANNEL_IBSS)
5412 && !(eeprom_ch_info[ch].
5413 flags & EEPROM_CHANNEL_RADAR))
5414 ? "" : "not ");
5415
5416 /* Set the user_txpower_limit to the highest power
5417 * supported by any channel */
5418 if (eeprom_ch_info[ch].max_power_avg >
5419 priv->user_txpower_limit)
5420 priv->user_txpower_limit =
5421 eeprom_ch_info[ch].max_power_avg;
5422
5423 ch_info++;
5424 }
5425 }
5426
5427 for (band = 6; band <= 7; band++) {
5428 int phymode;
5429 u8 fat_extension_chan;
5430
5431 iwl_init_band_reference(priv, band, &eeprom_ch_count,
5432 &eeprom_ch_info, &eeprom_ch_index);
5433
5434 phymode = (band == 6) ? MODE_IEEE80211B : MODE_IEEE80211A;
5435 /* Loop through each band adding each of the channels */
5436 for (ch = 0; ch < eeprom_ch_count; ch++) {
5437
5438 if ((band == 6) &&
5439 ((eeprom_ch_index[ch] == 5) ||
5440 (eeprom_ch_index[ch] == 6) ||
5441 (eeprom_ch_index[ch] == 7)))
5442 fat_extension_chan = HT_IE_EXT_CHANNEL_MAX;
5443 else
5444 fat_extension_chan = HT_IE_EXT_CHANNEL_ABOVE;
5445
5446 iwl4965_set_fat_chan_info(priv, phymode,
5447 eeprom_ch_index[ch],
5448 &(eeprom_ch_info[ch]),
5449 fat_extension_chan);
5450
5451 iwl4965_set_fat_chan_info(priv, phymode,
5452 (eeprom_ch_index[ch] + 4),
5453 &(eeprom_ch_info[ch]),
5454 HT_IE_EXT_CHANNEL_BELOW);
5455 }
5456 }
5457
5458 return 0;
5459 }
5460
5461 /* For active scan, listen ACTIVE_DWELL_TIME (msec) on each channel after
5462 * sending probe req. This should be set long enough to hear probe responses
5463 * from more than one AP. */
5464 #define IWL_ACTIVE_DWELL_TIME_24 (20) /* all times in msec */
5465 #define IWL_ACTIVE_DWELL_TIME_52 (10)
5466
5467 /* For faster active scanning, scan will move to the next channel if fewer than
5468 * PLCP_QUIET_THRESH packets are heard on this channel within
5469 * ACTIVE_QUIET_TIME after sending probe request. This shortens the dwell
5470 * time if it's a quiet channel (nothing responded to our probe, and there's
5471 * no other traffic).
5472 * Disable "quiet" feature by setting PLCP_QUIET_THRESH to 0. */
5473 #define IWL_PLCP_QUIET_THRESH __constant_cpu_to_le16(1) /* packets */
5474 #define IWL_ACTIVE_QUIET_TIME __constant_cpu_to_le16(5) /* msec */
5475
5476 /* For passive scan, listen PASSIVE_DWELL_TIME (msec) on each channel.
5477 * Must be set longer than active dwell time.
5478 * For the most reliable scan, set > AP beacon interval (typically 100msec). */
5479 #define IWL_PASSIVE_DWELL_TIME_24 (20) /* all times in msec */
5480 #define IWL_PASSIVE_DWELL_TIME_52 (10)
5481 #define IWL_PASSIVE_DWELL_BASE (100)
5482 #define IWL_CHANNEL_TUNE_TIME 5
5483
5484 static inline u16 iwl_get_active_dwell_time(struct iwl_priv *priv, int phymode)
5485 {
5486 if (phymode == MODE_IEEE80211A)
5487 return IWL_ACTIVE_DWELL_TIME_52;
5488 else
5489 return IWL_ACTIVE_DWELL_TIME_24;
5490 }
5491
5492 static u16 iwl_get_passive_dwell_time(struct iwl_priv *priv, int phymode)
5493 {
5494 u16 active = iwl_get_active_dwell_time(priv, phymode);
5495 u16 passive = (phymode != MODE_IEEE80211A) ?
5496 IWL_PASSIVE_DWELL_BASE + IWL_PASSIVE_DWELL_TIME_24 :
5497 IWL_PASSIVE_DWELL_BASE + IWL_PASSIVE_DWELL_TIME_52;
5498
5499 if (iwl_is_associated(priv)) {
5500 /* If we're associated, we clamp the maximum passive
5501 * dwell time to be 98% of the beacon interval (minus
5502 * 2 * channel tune time) */
5503 passive = priv->beacon_int;
5504 if ((passive > IWL_PASSIVE_DWELL_BASE) || !passive)
5505 passive = IWL_PASSIVE_DWELL_BASE;
5506 passive = (passive * 98) / 100 - IWL_CHANNEL_TUNE_TIME * 2;
5507 }
5508
5509 if (passive <= active)
5510 passive = active + 1;
5511
5512 return passive;
5513 }
5514
5515 static int iwl_get_channels_for_scan(struct iwl_priv *priv, int phymode,
5516 u8 is_active, u8 direct_mask,
5517 struct iwl_scan_channel *scan_ch)
5518 {
5519 const struct ieee80211_channel *channels = NULL;
5520 const struct ieee80211_hw_mode *hw_mode;
5521 const struct iwl_channel_info *ch_info;
5522 u16 passive_dwell = 0;
5523 u16 active_dwell = 0;
5524 int added, i;
5525
5526 hw_mode = iwl_get_hw_mode(priv, phymode);
5527 if (!hw_mode)
5528 return 0;
5529
5530 channels = hw_mode->channels;
5531
5532 active_dwell = iwl_get_active_dwell_time(priv, phymode);
5533 passive_dwell = iwl_get_passive_dwell_time(priv, phymode);
5534
5535 for (i = 0, added = 0; i < hw_mode->num_channels; i++) {
5536 if (channels[i].chan ==
5537 le16_to_cpu(priv->active_rxon.channel)) {
5538 if (iwl_is_associated(priv)) {
5539 IWL_DEBUG_SCAN
5540 ("Skipping current channel %d\n",
5541 le16_to_cpu(priv->active_rxon.channel));
5542 continue;
5543 }
5544 } else if (priv->only_active_channel)
5545 continue;
5546
5547 scan_ch->channel = channels[i].chan;
5548
5549 ch_info = iwl_get_channel_info(priv, phymode, scan_ch->channel);
5550 if (!is_channel_valid(ch_info)) {
5551 IWL_DEBUG_SCAN("Channel %d is INVALID for this SKU.\n",
5552 scan_ch->channel);
5553 continue;
5554 }
5555
5556 if (!is_active || is_channel_passive(ch_info) ||
5557 !(channels[i].flag & IEEE80211_CHAN_W_ACTIVE_SCAN))
5558 scan_ch->type = 0; /* passive */
5559 else
5560 scan_ch->type = 1; /* active */
5561
5562 if (scan_ch->type & 1)
5563 scan_ch->type |= (direct_mask << 1);
5564
5565 if (is_channel_narrow(ch_info))
5566 scan_ch->type |= (1 << 7);
5567
5568 scan_ch->active_dwell = cpu_to_le16(active_dwell);
5569 scan_ch->passive_dwell = cpu_to_le16(passive_dwell);
5570
5571 /* Set power levels to defaults */
5572 scan_ch->tpc.dsp_atten = 110;
5573 /* scan_pwr_info->tpc.dsp_atten; */
5574
5575 /*scan_pwr_info->tpc.tx_gain; */
5576 if (phymode == MODE_IEEE80211A)
5577 scan_ch->tpc.tx_gain = ((1 << 5) | (3 << 3)) | 3;
5578 else {
5579 scan_ch->tpc.tx_gain = ((1 << 5) | (5 << 3));
5580 /* NOTE: if we were doing 6Mb OFDM for scans we'd use
5581 * power level
5582 scan_ch->tpc.tx_gain = ((1<<5) | (2 << 3)) | 3;
5583 */
5584 }
5585
5586 IWL_DEBUG_SCAN("Scanning %d [%s %d]\n",
5587 scan_ch->channel,
5588 (scan_ch->type & 1) ? "ACTIVE" : "PASSIVE",
5589 (scan_ch->type & 1) ?
5590 active_dwell : passive_dwell);
5591
5592 scan_ch++;
5593 added++;
5594 }
5595
5596 IWL_DEBUG_SCAN("total channels to scan %d \n", added);
5597 return added;
5598 }
5599
5600 static void iwl_reset_channel_flag(struct iwl_priv *priv)
5601 {
5602 int i, j;
5603 for (i = 0; i < 3; i++) {
5604 struct ieee80211_hw_mode *hw_mode = (void *)&priv->modes[i];
5605 for (j = 0; j < hw_mode->num_channels; j++)
5606 hw_mode->channels[j].flag = hw_mode->channels[j].val;
5607 }
5608 }
5609
5610 static void iwl_init_hw_rates(struct iwl_priv *priv,
5611 struct ieee80211_rate *rates)
5612 {
5613 int i;
5614
5615 for (i = 0; i < IWL_RATE_COUNT; i++) {
5616 rates[i].rate = iwl_rates[i].ieee * 5;
5617 rates[i].val = i; /* Rate scaling will work on indexes */
5618 rates[i].val2 = i;
5619 rates[i].flags = IEEE80211_RATE_SUPPORTED;
5620 /* Only OFDM have the bits-per-symbol set */
5621 if ((i <= IWL_LAST_OFDM_RATE) && (i >= IWL_FIRST_OFDM_RATE))
5622 rates[i].flags |= IEEE80211_RATE_OFDM;
5623 else {
5624 /*
5625 * If CCK 1M then set rate flag to CCK else CCK_2
5626 * which is CCK | PREAMBLE2
5627 */
5628 rates[i].flags |= (iwl_rates[i].plcp == 10) ?
5629 IEEE80211_RATE_CCK : IEEE80211_RATE_CCK_2;
5630 }
5631
5632 /* Set up which ones are basic rates... */
5633 if (IWL_BASIC_RATES_MASK & (1 << i))
5634 rates[i].flags |= IEEE80211_RATE_BASIC;
5635 }
5636
5637 iwl4965_init_hw_rates(priv, rates);
5638 }
5639
5640 /**
5641 * iwl_init_geos - Initialize mac80211's geo/channel info based from eeprom
5642 */
5643 static int iwl_init_geos(struct iwl_priv *priv)
5644 {
5645 struct iwl_channel_info *ch;
5646 struct ieee80211_hw_mode *modes;
5647 struct ieee80211_channel *channels;
5648 struct ieee80211_channel *geo_ch;
5649 struct ieee80211_rate *rates;
5650 int i = 0;
5651 enum {
5652 A = 0,
5653 B = 1,
5654 G = 2,
5655 A_11N = 3,
5656 G_11N = 4,
5657 };
5658 int mode_count = 5;
5659
5660 if (priv->modes) {
5661 IWL_DEBUG_INFO("Geography modes already initialized.\n");
5662 set_bit(STATUS_GEO_CONFIGURED, &priv->status);
5663 return 0;
5664 }
5665
5666 modes = kzalloc(sizeof(struct ieee80211_hw_mode) * mode_count,
5667 GFP_KERNEL);
5668 if (!modes)
5669 return -ENOMEM;
5670
5671 channels = kzalloc(sizeof(struct ieee80211_channel) *
5672 priv->channel_count, GFP_KERNEL);
5673 if (!channels) {
5674 kfree(modes);
5675 return -ENOMEM;
5676 }
5677
5678 rates = kzalloc((sizeof(struct ieee80211_rate) * (IWL_MAX_RATES + 1)),
5679 GFP_KERNEL);
5680 if (!rates) {
5681 kfree(modes);
5682 kfree(channels);
5683 return -ENOMEM;
5684 }
5685
5686 /* 0 = 802.11a
5687 * 1 = 802.11b
5688 * 2 = 802.11g
5689 */
5690
5691 /* 5.2GHz channels start after the 2.4GHz channels */
5692 modes[A].mode = MODE_IEEE80211A;
5693 modes[A].channels = &channels[ARRAY_SIZE(iwl_eeprom_band_1)];
5694 modes[A].rates = rates;
5695 modes[A].num_rates = 8; /* just OFDM */
5696 modes[A].rates = &rates[4];
5697 modes[A].num_channels = 0;
5698
5699 modes[B].mode = MODE_IEEE80211B;
5700 modes[B].channels = channels;
5701 modes[B].rates = rates;
5702 modes[B].num_rates = 4; /* just CCK */
5703 modes[B].num_channels = 0;
5704
5705 modes[G].mode = MODE_IEEE80211G;
5706 modes[G].channels = channels;
5707 modes[G].rates = rates;
5708 modes[G].num_rates = 12; /* OFDM & CCK */
5709 modes[G].num_channels = 0;
5710
5711 modes[G_11N].mode = MODE_IEEE80211G;
5712 modes[G_11N].channels = channels;
5713 modes[G_11N].num_rates = 13; /* OFDM & CCK */
5714 modes[G_11N].rates = rates;
5715 modes[G_11N].num_channels = 0;
5716
5717 modes[A_11N].mode = MODE_IEEE80211A;
5718 modes[A_11N].channels = &channels[ARRAY_SIZE(iwl_eeprom_band_1)];
5719 modes[A_11N].rates = &rates[4];
5720 modes[A_11N].num_rates = 9; /* just OFDM */
5721 modes[A_11N].num_channels = 0;
5722
5723 priv->ieee_channels = channels;
5724 priv->ieee_rates = rates;
5725
5726 iwl_init_hw_rates(priv, rates);
5727
5728 for (i = 0, geo_ch = channels; i < priv->channel_count; i++) {
5729 ch = &priv->channel_info[i];
5730
5731 if (!is_channel_valid(ch)) {
5732 IWL_DEBUG_INFO("Channel %d [%sGHz] is restricted -- "
5733 "skipping.\n",
5734 ch->channel, is_channel_a_band(ch) ?
5735 "5.2" : "2.4");
5736 continue;
5737 }
5738
5739 if (is_channel_a_band(ch)) {
5740 geo_ch = &modes[A].channels[modes[A].num_channels++];
5741 modes[A_11N].num_channels++;
5742 } else {
5743 geo_ch = &modes[B].channels[modes[B].num_channels++];
5744 modes[G].num_channels++;
5745 modes[G_11N].num_channels++;
5746 }
5747
5748 geo_ch->freq = ieee80211chan2mhz(ch->channel);
5749 geo_ch->chan = ch->channel;
5750 geo_ch->power_level = ch->max_power_avg;
5751 geo_ch->antenna_max = 0xff;
5752
5753 if (is_channel_valid(ch)) {
5754 geo_ch->flag = IEEE80211_CHAN_W_SCAN;
5755 if (ch->flags & EEPROM_CHANNEL_IBSS)
5756 geo_ch->flag |= IEEE80211_CHAN_W_IBSS;
5757
5758 if (ch->flags & EEPROM_CHANNEL_ACTIVE)
5759 geo_ch->flag |= IEEE80211_CHAN_W_ACTIVE_SCAN;
5760
5761 if (ch->flags & EEPROM_CHANNEL_RADAR)
5762 geo_ch->flag |= IEEE80211_CHAN_W_RADAR_DETECT;
5763
5764 if (ch->max_power_avg > priv->max_channel_txpower_limit)
5765 priv->max_channel_txpower_limit =
5766 ch->max_power_avg;
5767 }
5768
5769 geo_ch->val = geo_ch->flag;
5770 }
5771
5772 if ((modes[A].num_channels == 0) && priv->is_abg) {
5773 printk(KERN_INFO DRV_NAME
5774 ": Incorrectly detected BG card as ABG. Please send "
5775 "your PCI ID 0x%04X:0x%04X to maintainer.\n",
5776 priv->pci_dev->device, priv->pci_dev->subsystem_device);
5777 priv->is_abg = 0;
5778 }
5779
5780 printk(KERN_INFO DRV_NAME
5781 ": Tunable channels: %d 802.11bg, %d 802.11a channels\n",
5782 modes[G].num_channels, modes[A].num_channels);
5783
5784 /*
5785 * NOTE: We register these in preference of order -- the
5786 * stack doesn't currently (as of 7.0.6 / Apr 24 '07) pick
5787 * a phymode based on rates or AP capabilities but seems to
5788 * configure it purely on if the channel being configured
5789 * is supported by a mode -- and the first match is taken
5790 */
5791
5792 if (modes[G].num_channels)
5793 ieee80211_register_hwmode(priv->hw, &modes[G]);
5794 if (modes[B].num_channels)
5795 ieee80211_register_hwmode(priv->hw, &modes[B]);
5796 if (modes[A].num_channels)
5797 ieee80211_register_hwmode(priv->hw, &modes[A]);
5798
5799 priv->modes = modes;
5800 set_bit(STATUS_GEO_CONFIGURED, &priv->status);
5801
5802 return 0;
5803 }
5804
5805 /******************************************************************************
5806 *
5807 * uCode download functions
5808 *
5809 ******************************************************************************/
5810
5811 static void iwl_dealloc_ucode_pci(struct iwl_priv *priv)
5812 {
5813 if (priv->ucode_code.v_addr != NULL) {
5814 pci_free_consistent(priv->pci_dev,
5815 priv->ucode_code.len,
5816 priv->ucode_code.v_addr,
5817 priv->ucode_code.p_addr);
5818 priv->ucode_code.v_addr = NULL;
5819 }
5820 if (priv->ucode_data.v_addr != NULL) {
5821 pci_free_consistent(priv->pci_dev,
5822 priv->ucode_data.len,
5823 priv->ucode_data.v_addr,
5824 priv->ucode_data.p_addr);
5825 priv->ucode_data.v_addr = NULL;
5826 }
5827 if (priv->ucode_data_backup.v_addr != NULL) {
5828 pci_free_consistent(priv->pci_dev,
5829 priv->ucode_data_backup.len,
5830 priv->ucode_data_backup.v_addr,
5831 priv->ucode_data_backup.p_addr);
5832 priv->ucode_data_backup.v_addr = NULL;
5833 }
5834 if (priv->ucode_init.v_addr != NULL) {
5835 pci_free_consistent(priv->pci_dev,
5836 priv->ucode_init.len,
5837 priv->ucode_init.v_addr,
5838 priv->ucode_init.p_addr);
5839 priv->ucode_init.v_addr = NULL;
5840 }
5841 if (priv->ucode_init_data.v_addr != NULL) {
5842 pci_free_consistent(priv->pci_dev,
5843 priv->ucode_init_data.len,
5844 priv->ucode_init_data.v_addr,
5845 priv->ucode_init_data.p_addr);
5846 priv->ucode_init_data.v_addr = NULL;
5847 }
5848 if (priv->ucode_boot.v_addr != NULL) {
5849 pci_free_consistent(priv->pci_dev,
5850 priv->ucode_boot.len,
5851 priv->ucode_boot.v_addr,
5852 priv->ucode_boot.p_addr);
5853 priv->ucode_boot.v_addr = NULL;
5854 }
5855 }
5856
5857 /**
5858 * iwl_verify_inst_full - verify runtime uCode image in card vs. host,
5859 * looking at all data.
5860 */
5861 static int iwl_verify_inst_full(struct iwl_priv *priv, __le32 * image, u32 len)
5862 {
5863 u32 val;
5864 u32 save_len = len;
5865 int rc = 0;
5866 u32 errcnt;
5867
5868 IWL_DEBUG_INFO("ucode inst image size is %u\n", len);
5869
5870 rc = iwl_grab_restricted_access(priv);
5871 if (rc)
5872 return rc;
5873
5874 iwl_write_restricted(priv, HBUS_TARG_MEM_RADDR, RTC_INST_LOWER_BOUND);
5875
5876 errcnt = 0;
5877 for (; len > 0; len -= sizeof(u32), image++) {
5878 /* read data comes through single port, auto-incr addr */
5879 /* NOTE: Use the debugless read so we don't flood kernel log
5880 * if IWL_DL_IO is set */
5881 val = _iwl_read_restricted(priv, HBUS_TARG_MEM_RDAT);
5882 if (val != le32_to_cpu(*image)) {
5883 IWL_ERROR("uCode INST section is invalid at "
5884 "offset 0x%x, is 0x%x, s/b 0x%x\n",
5885 save_len - len, val, le32_to_cpu(*image));
5886 rc = -EIO;
5887 errcnt++;
5888 if (errcnt >= 20)
5889 break;
5890 }
5891 }
5892
5893 iwl_release_restricted_access(priv);
5894
5895 if (!errcnt)
5896 IWL_DEBUG_INFO
5897 ("ucode image in INSTRUCTION memory is good\n");
5898
5899 return rc;
5900 }
5901
5902
5903 /**
5904 * iwl_verify_inst_sparse - verify runtime uCode image in card vs. host,
5905 * using sample data 100 bytes apart. If these sample points are good,
5906 * it's a pretty good bet that everything between them is good, too.
5907 */
5908 static int iwl_verify_inst_sparse(struct iwl_priv *priv, __le32 *image, u32 len)
5909 {
5910 u32 val;
5911 int rc = 0;
5912 u32 errcnt = 0;
5913 u32 i;
5914
5915 IWL_DEBUG_INFO("ucode inst image size is %u\n", len);
5916
5917 rc = iwl_grab_restricted_access(priv);
5918 if (rc)
5919 return rc;
5920
5921 for (i = 0; i < len; i += 100, image += 100/sizeof(u32)) {
5922 /* read data comes through single port, auto-incr addr */
5923 /* NOTE: Use the debugless read so we don't flood kernel log
5924 * if IWL_DL_IO is set */
5925 iwl_write_restricted(priv, HBUS_TARG_MEM_RADDR,
5926 i + RTC_INST_LOWER_BOUND);
5927 val = _iwl_read_restricted(priv, HBUS_TARG_MEM_RDAT);
5928 if (val != le32_to_cpu(*image)) {
5929 #if 0 /* Enable this if you want to see details */
5930 IWL_ERROR("uCode INST section is invalid at "
5931 "offset 0x%x, is 0x%x, s/b 0x%x\n",
5932 i, val, *image);
5933 #endif
5934 rc = -EIO;
5935 errcnt++;
5936 if (errcnt >= 3)
5937 break;
5938 }
5939 }
5940
5941 iwl_release_restricted_access(priv);
5942
5943 return rc;
5944 }
5945
5946
5947 /**
5948 * iwl_verify_ucode - determine which instruction image is in SRAM,
5949 * and verify its contents
5950 */
5951 static int iwl_verify_ucode(struct iwl_priv *priv)
5952 {
5953 __le32 *image;
5954 u32 len;
5955 int rc = 0;
5956
5957 /* Try bootstrap */
5958 image = (__le32 *)priv->ucode_boot.v_addr;
5959 len = priv->ucode_boot.len;
5960 rc = iwl_verify_inst_sparse(priv, image, len);
5961 if (rc == 0) {
5962 IWL_DEBUG_INFO("Bootstrap uCode is good in inst SRAM\n");
5963 return 0;
5964 }
5965
5966 /* Try initialize */
5967 image = (__le32 *)priv->ucode_init.v_addr;
5968 len = priv->ucode_init.len;
5969 rc = iwl_verify_inst_sparse(priv, image, len);
5970 if (rc == 0) {
5971 IWL_DEBUG_INFO("Initialize uCode is good in inst SRAM\n");
5972 return 0;
5973 }
5974
5975 /* Try runtime/protocol */
5976 image = (__le32 *)priv->ucode_code.v_addr;
5977 len = priv->ucode_code.len;
5978 rc = iwl_verify_inst_sparse(priv, image, len);
5979 if (rc == 0) {
5980 IWL_DEBUG_INFO("Runtime uCode is good in inst SRAM\n");
5981 return 0;
5982 }
5983
5984 IWL_ERROR("NO VALID UCODE IMAGE IN INSTRUCTION SRAM!!\n");
5985
5986 /* Show first several data entries in instruction SRAM.
5987 * Selection of bootstrap image is arbitrary. */
5988 image = (__le32 *)priv->ucode_boot.v_addr;
5989 len = priv->ucode_boot.len;
5990 rc = iwl_verify_inst_full(priv, image, len);
5991
5992 return rc;
5993 }
5994
5995
5996 /* check contents of special bootstrap uCode SRAM */
5997 static int iwl_verify_bsm(struct iwl_priv *priv)
5998 {
5999 __le32 *image = priv->ucode_boot.v_addr;
6000 u32 len = priv->ucode_boot.len;
6001 u32 reg;
6002 u32 val;
6003
6004 IWL_DEBUG_INFO("Begin verify bsm\n");
6005
6006 /* verify BSM SRAM contents */
6007 val = iwl_read_restricted_reg(priv, BSM_WR_DWCOUNT_REG);
6008 for (reg = BSM_SRAM_LOWER_BOUND;
6009 reg < BSM_SRAM_LOWER_BOUND + len;
6010 reg += sizeof(u32), image ++) {
6011 val = iwl_read_restricted_reg(priv, reg);
6012 if (val != le32_to_cpu(*image)) {
6013 IWL_ERROR("BSM uCode verification failed at "
6014 "addr 0x%08X+%u (of %u), is 0x%x, s/b 0x%x\n",
6015 BSM_SRAM_LOWER_BOUND,
6016 reg - BSM_SRAM_LOWER_BOUND, len,
6017 val, le32_to_cpu(*image));
6018 return -EIO;
6019 }
6020 }
6021
6022 IWL_DEBUG_INFO("BSM bootstrap uCode image OK\n");
6023
6024 return 0;
6025 }
6026
6027 /**
6028 * iwl_load_bsm - Load bootstrap instructions
6029 *
6030 * BSM operation:
6031 *
6032 * The Bootstrap State Machine (BSM) stores a short bootstrap uCode program
6033 * in special SRAM that does not power down during RFKILL. When powering back
6034 * up after power-saving sleeps (or during initial uCode load), the BSM loads
6035 * the bootstrap program into the on-board processor, and starts it.
6036 *
6037 * The bootstrap program loads (via DMA) instructions and data for a new
6038 * program from host DRAM locations indicated by the host driver in the
6039 * BSM_DRAM_* registers. Once the new program is loaded, it starts
6040 * automatically.
6041 *
6042 * When initializing the NIC, the host driver points the BSM to the
6043 * "initialize" uCode image. This uCode sets up some internal data, then
6044 * notifies host via "initialize alive" that it is complete.
6045 *
6046 * The host then replaces the BSM_DRAM_* pointer values to point to the
6047 * normal runtime uCode instructions and a backup uCode data cache buffer
6048 * (filled initially with starting data values for the on-board processor),
6049 * then triggers the "initialize" uCode to load and launch the runtime uCode,
6050 * which begins normal operation.
6051 *
6052 * When doing a power-save shutdown, runtime uCode saves data SRAM into
6053 * the backup data cache in DRAM before SRAM is powered down.
6054 *
6055 * When powering back up, the BSM loads the bootstrap program. This reloads
6056 * the runtime uCode instructions and the backup data cache into SRAM,
6057 * and re-launches the runtime uCode from where it left off.
6058 */
6059 static int iwl_load_bsm(struct iwl_priv *priv)
6060 {
6061 __le32 *image = priv->ucode_boot.v_addr;
6062 u32 len = priv->ucode_boot.len;
6063 dma_addr_t pinst;
6064 dma_addr_t pdata;
6065 u32 inst_len;
6066 u32 data_len;
6067 int rc;
6068 int i;
6069 u32 done;
6070 u32 reg_offset;
6071
6072 IWL_DEBUG_INFO("Begin load bsm\n");
6073
6074 /* make sure bootstrap program is no larger than BSM's SRAM size */
6075 if (len > IWL_MAX_BSM_SIZE)
6076 return -EINVAL;
6077
6078 /* Tell bootstrap uCode where to find the "Initialize" uCode
6079 * in host DRAM ... bits 31:0 for 3945, bits 35:4 for 4965.
6080 * NOTE: iwl_initialize_alive_start() will replace these values,
6081 * after the "initialize" uCode has run, to point to
6082 * runtime/protocol instructions and backup data cache. */
6083 pinst = priv->ucode_init.p_addr >> 4;
6084 pdata = priv->ucode_init_data.p_addr >> 4;
6085 inst_len = priv->ucode_init.len;
6086 data_len = priv->ucode_init_data.len;
6087
6088 rc = iwl_grab_restricted_access(priv);
6089 if (rc)
6090 return rc;
6091
6092 iwl_write_restricted_reg(priv, BSM_DRAM_INST_PTR_REG, pinst);
6093 iwl_write_restricted_reg(priv, BSM_DRAM_DATA_PTR_REG, pdata);
6094 iwl_write_restricted_reg(priv, BSM_DRAM_INST_BYTECOUNT_REG, inst_len);
6095 iwl_write_restricted_reg(priv, BSM_DRAM_DATA_BYTECOUNT_REG, data_len);
6096
6097 /* Fill BSM memory with bootstrap instructions */
6098 for (reg_offset = BSM_SRAM_LOWER_BOUND;
6099 reg_offset < BSM_SRAM_LOWER_BOUND + len;
6100 reg_offset += sizeof(u32), image++)
6101 _iwl_write_restricted_reg(priv, reg_offset,
6102 le32_to_cpu(*image));
6103
6104 rc = iwl_verify_bsm(priv);
6105 if (rc) {
6106 iwl_release_restricted_access(priv);
6107 return rc;
6108 }
6109
6110 /* Tell BSM to copy from BSM SRAM into instruction SRAM, when asked */
6111 iwl_write_restricted_reg(priv, BSM_WR_MEM_SRC_REG, 0x0);
6112 iwl_write_restricted_reg(priv, BSM_WR_MEM_DST_REG,
6113 RTC_INST_LOWER_BOUND);
6114 iwl_write_restricted_reg(priv, BSM_WR_DWCOUNT_REG, len / sizeof(u32));
6115
6116 /* Load bootstrap code into instruction SRAM now,
6117 * to prepare to load "initialize" uCode */
6118 iwl_write_restricted_reg(priv, BSM_WR_CTRL_REG,
6119 BSM_WR_CTRL_REG_BIT_START);
6120
6121 /* Wait for load of bootstrap uCode to finish */
6122 for (i = 0; i < 100; i++) {
6123 done = iwl_read_restricted_reg(priv, BSM_WR_CTRL_REG);
6124 if (!(done & BSM_WR_CTRL_REG_BIT_START))
6125 break;
6126 udelay(10);
6127 }
6128 if (i < 100)
6129 IWL_DEBUG_INFO("BSM write complete, poll %d iterations\n", i);
6130 else {
6131 IWL_ERROR("BSM write did not complete!\n");
6132 return -EIO;
6133 }
6134
6135 /* Enable future boot loads whenever power management unit triggers it
6136 * (e.g. when powering back up after power-save shutdown) */
6137 iwl_write_restricted_reg(priv, BSM_WR_CTRL_REG,
6138 BSM_WR_CTRL_REG_BIT_START_EN);
6139
6140 iwl_release_restricted_access(priv);
6141
6142 return 0;
6143 }
6144
6145 static void iwl_nic_start(struct iwl_priv *priv)
6146 {
6147 /* Remove all resets to allow NIC to operate */
6148 iwl_write32(priv, CSR_RESET, 0);
6149 }
6150
6151 /**
6152 * iwl_read_ucode - Read uCode images from disk file.
6153 *
6154 * Copy into buffers for card to fetch via bus-mastering
6155 */
6156 static int iwl_read_ucode(struct iwl_priv *priv)
6157 {
6158 struct iwl_ucode *ucode;
6159 int rc = 0;
6160 const struct firmware *ucode_raw;
6161 const char *name = "iwlwifi-4965" IWL4965_UCODE_API ".ucode";
6162 u8 *src;
6163 size_t len;
6164 u32 ver, inst_size, data_size, init_size, init_data_size, boot_size;
6165
6166 /* Ask kernel firmware_class module to get the boot firmware off disk.
6167 * request_firmware() is synchronous, file is in memory on return. */
6168 rc = request_firmware(&ucode_raw, name, &priv->pci_dev->dev);
6169 if (rc < 0) {
6170 IWL_ERROR("%s firmware file req failed: Reason %d\n", name, rc);
6171 goto error;
6172 }
6173
6174 IWL_DEBUG_INFO("Got firmware '%s' file (%zd bytes) from disk\n",
6175 name, ucode_raw->size);
6176
6177 /* Make sure that we got at least our header! */
6178 if (ucode_raw->size < sizeof(*ucode)) {
6179 IWL_ERROR("File size way too small!\n");
6180 rc = -EINVAL;
6181 goto err_release;
6182 }
6183
6184 /* Data from ucode file: header followed by uCode images */
6185 ucode = (void *)ucode_raw->data;
6186
6187 ver = le32_to_cpu(ucode->ver);
6188 inst_size = le32_to_cpu(ucode->inst_size);
6189 data_size = le32_to_cpu(ucode->data_size);
6190 init_size = le32_to_cpu(ucode->init_size);
6191 init_data_size = le32_to_cpu(ucode->init_data_size);
6192 boot_size = le32_to_cpu(ucode->boot_size);
6193
6194 IWL_DEBUG_INFO("f/w package hdr ucode version = 0x%x\n", ver);
6195 IWL_DEBUG_INFO("f/w package hdr runtime inst size = %u\n",
6196 inst_size);
6197 IWL_DEBUG_INFO("f/w package hdr runtime data size = %u\n",
6198 data_size);
6199 IWL_DEBUG_INFO("f/w package hdr init inst size = %u\n",
6200 init_size);
6201 IWL_DEBUG_INFO("f/w package hdr init data size = %u\n",
6202 init_data_size);
6203 IWL_DEBUG_INFO("f/w package hdr boot inst size = %u\n",
6204 boot_size);
6205
6206 /* Verify size of file vs. image size info in file's header */
6207 if (ucode_raw->size < sizeof(*ucode) +
6208 inst_size + data_size + init_size +
6209 init_data_size + boot_size) {
6210
6211 IWL_DEBUG_INFO("uCode file size %d too small\n",
6212 (int)ucode_raw->size);
6213 rc = -EINVAL;
6214 goto err_release;
6215 }
6216
6217 /* Verify that uCode images will fit in card's SRAM */
6218 if (inst_size > IWL_MAX_INST_SIZE) {
6219 IWL_DEBUG_INFO("uCode instr len %d too large to fit in card\n",
6220 (int)inst_size);
6221 rc = -EINVAL;
6222 goto err_release;
6223 }
6224
6225 if (data_size > IWL_MAX_DATA_SIZE) {
6226 IWL_DEBUG_INFO("uCode data len %d too large to fit in card\n",
6227 (int)data_size);
6228 rc = -EINVAL;
6229 goto err_release;
6230 }
6231 if (init_size > IWL_MAX_INST_SIZE) {
6232 IWL_DEBUG_INFO
6233 ("uCode init instr len %d too large to fit in card\n",
6234 (int)init_size);
6235 rc = -EINVAL;
6236 goto err_release;
6237 }
6238 if (init_data_size > IWL_MAX_DATA_SIZE) {
6239 IWL_DEBUG_INFO
6240 ("uCode init data len %d too large to fit in card\n",
6241 (int)init_data_size);
6242 rc = -EINVAL;
6243 goto err_release;
6244 }
6245 if (boot_size > IWL_MAX_BSM_SIZE) {
6246 IWL_DEBUG_INFO
6247 ("uCode boot instr len %d too large to fit in bsm\n",
6248 (int)boot_size);
6249 rc = -EINVAL;
6250 goto err_release;
6251 }
6252
6253 /* Allocate ucode buffers for card's bus-master loading ... */
6254
6255 /* Runtime instructions and 2 copies of data:
6256 * 1) unmodified from disk
6257 * 2) backup cache for save/restore during power-downs */
6258 priv->ucode_code.len = inst_size;
6259 priv->ucode_code.v_addr =
6260 pci_alloc_consistent(priv->pci_dev,
6261 priv->ucode_code.len,
6262 &(priv->ucode_code.p_addr));
6263
6264 priv->ucode_data.len = data_size;
6265 priv->ucode_data.v_addr =
6266 pci_alloc_consistent(priv->pci_dev,
6267 priv->ucode_data.len,
6268 &(priv->ucode_data.p_addr));
6269
6270 priv->ucode_data_backup.len = data_size;
6271 priv->ucode_data_backup.v_addr =
6272 pci_alloc_consistent(priv->pci_dev,
6273 priv->ucode_data_backup.len,
6274 &(priv->ucode_data_backup.p_addr));
6275
6276
6277 /* Initialization instructions and data */
6278 priv->ucode_init.len = init_size;
6279 priv->ucode_init.v_addr =
6280 pci_alloc_consistent(priv->pci_dev,
6281 priv->ucode_init.len,
6282 &(priv->ucode_init.p_addr));
6283
6284 priv->ucode_init_data.len = init_data_size;
6285 priv->ucode_init_data.v_addr =
6286 pci_alloc_consistent(priv->pci_dev,
6287 priv->ucode_init_data.len,
6288 &(priv->ucode_init_data.p_addr));
6289
6290 /* Bootstrap (instructions only, no data) */
6291 priv->ucode_boot.len = boot_size;
6292 priv->ucode_boot.v_addr =
6293 pci_alloc_consistent(priv->pci_dev,
6294 priv->ucode_boot.len,
6295 &(priv->ucode_boot.p_addr));
6296
6297 if (!priv->ucode_code.v_addr || !priv->ucode_data.v_addr ||
6298 !priv->ucode_init.v_addr || !priv->ucode_init_data.v_addr ||
6299 !priv->ucode_boot.v_addr || !priv->ucode_data_backup.v_addr)
6300 goto err_pci_alloc;
6301
6302 /* Copy images into buffers for card's bus-master reads ... */
6303
6304 /* Runtime instructions (first block of data in file) */
6305 src = &ucode->data[0];
6306 len = priv->ucode_code.len;
6307 IWL_DEBUG_INFO("Copying (but not loading) uCode instr len %d\n",
6308 (int)len);
6309 memcpy(priv->ucode_code.v_addr, src, len);
6310 IWL_DEBUG_INFO("uCode instr buf vaddr = 0x%p, paddr = 0x%08x\n",
6311 priv->ucode_code.v_addr, (u32)priv->ucode_code.p_addr);
6312
6313 /* Runtime data (2nd block)
6314 * NOTE: Copy into backup buffer will be done in iwl_up() */
6315 src = &ucode->data[inst_size];
6316 len = priv->ucode_data.len;
6317 IWL_DEBUG_INFO("Copying (but not loading) uCode data len %d\n",
6318 (int)len);
6319 memcpy(priv->ucode_data.v_addr, src, len);
6320 memcpy(priv->ucode_data_backup.v_addr, src, len);
6321
6322 /* Initialization instructions (3rd block) */
6323 if (init_size) {
6324 src = &ucode->data[inst_size + data_size];
6325 len = priv->ucode_init.len;
6326 IWL_DEBUG_INFO("Copying (but not loading) init instr len %d\n",
6327 (int)len);
6328 memcpy(priv->ucode_init.v_addr, src, len);
6329 }
6330
6331 /* Initialization data (4th block) */
6332 if (init_data_size) {
6333 src = &ucode->data[inst_size + data_size + init_size];
6334 len = priv->ucode_init_data.len;
6335 IWL_DEBUG_INFO("Copying (but not loading) init data len %d\n",
6336 (int)len);
6337 memcpy(priv->ucode_init_data.v_addr, src, len);
6338 }
6339
6340 /* Bootstrap instructions (5th block) */
6341 src = &ucode->data[inst_size + data_size + init_size + init_data_size];
6342 len = priv->ucode_boot.len;
6343 IWL_DEBUG_INFO("Copying (but not loading) boot instr len %d\n",
6344 (int)len);
6345 memcpy(priv->ucode_boot.v_addr, src, len);
6346
6347 /* We have our copies now, allow OS release its copies */
6348 release_firmware(ucode_raw);
6349 return 0;
6350
6351 err_pci_alloc:
6352 IWL_ERROR("failed to allocate pci memory\n");
6353 rc = -ENOMEM;
6354 iwl_dealloc_ucode_pci(priv);
6355
6356 err_release:
6357 release_firmware(ucode_raw);
6358
6359 error:
6360 return rc;
6361 }
6362
6363
6364 /**
6365 * iwl_set_ucode_ptrs - Set uCode address location
6366 *
6367 * Tell initialization uCode where to find runtime uCode.
6368 *
6369 * BSM registers initially contain pointers to initialization uCode.
6370 * We need to replace them to load runtime uCode inst and data,
6371 * and to save runtime data when powering down.
6372 */
6373 static int iwl_set_ucode_ptrs(struct iwl_priv *priv)
6374 {
6375 dma_addr_t pinst;
6376 dma_addr_t pdata;
6377 int rc = 0;
6378 unsigned long flags;
6379
6380 /* bits 35:4 for 4965 */
6381 pinst = priv->ucode_code.p_addr >> 4;
6382 pdata = priv->ucode_data_backup.p_addr >> 4;
6383
6384 spin_lock_irqsave(&priv->lock, flags);
6385 rc = iwl_grab_restricted_access(priv);
6386 if (rc) {
6387 spin_unlock_irqrestore(&priv->lock, flags);
6388 return rc;
6389 }
6390
6391 /* Tell bootstrap uCode where to find image to load */
6392 iwl_write_restricted_reg(priv, BSM_DRAM_INST_PTR_REG, pinst);
6393 iwl_write_restricted_reg(priv, BSM_DRAM_DATA_PTR_REG, pdata);
6394 iwl_write_restricted_reg(priv, BSM_DRAM_DATA_BYTECOUNT_REG,
6395 priv->ucode_data.len);
6396
6397 /* Inst bytecount must be last to set up, bit 31 signals uCode
6398 * that all new ptr/size info is in place */
6399 iwl_write_restricted_reg(priv, BSM_DRAM_INST_BYTECOUNT_REG,
6400 priv->ucode_code.len | BSM_DRAM_INST_LOAD);
6401
6402 iwl_release_restricted_access(priv);
6403
6404 spin_unlock_irqrestore(&priv->lock, flags);
6405
6406 IWL_DEBUG_INFO("Runtime uCode pointers are set.\n");
6407
6408 return rc;
6409 }
6410
6411 /**
6412 * iwl_init_alive_start - Called after REPLY_ALIVE notification receieved
6413 *
6414 * Called after REPLY_ALIVE notification received from "initialize" uCode.
6415 *
6416 * The 4965 "initialize" ALIVE reply contains calibration data for:
6417 * Voltage, temperature, and MIMO tx gain correction, now stored in priv
6418 * (3945 does not contain this data).
6419 *
6420 * Tell "initialize" uCode to go ahead and load the runtime uCode.
6421 */
6422 static void iwl_init_alive_start(struct iwl_priv *priv)
6423 {
6424 /* Check alive response for "valid" sign from uCode */
6425 if (priv->card_alive_init.is_valid != UCODE_VALID_OK) {
6426 /* We had an error bringing up the hardware, so take it
6427 * all the way back down so we can try again */
6428 IWL_DEBUG_INFO("Initialize Alive failed.\n");
6429 goto restart;
6430 }
6431
6432 /* Bootstrap uCode has loaded initialize uCode ... verify inst image.
6433 * This is a paranoid check, because we would not have gotten the
6434 * "initialize" alive if code weren't properly loaded. */
6435 if (iwl_verify_ucode(priv)) {
6436 /* Runtime instruction load was bad;
6437 * take it all the way back down so we can try again */
6438 IWL_DEBUG_INFO("Bad \"initialize\" uCode load.\n");
6439 goto restart;
6440 }
6441
6442 /* Calculate temperature */
6443 priv->temperature = iwl4965_get_temperature(priv);
6444
6445 /* Send pointers to protocol/runtime uCode image ... init code will
6446 * load and launch runtime uCode, which will send us another "Alive"
6447 * notification. */
6448 IWL_DEBUG_INFO("Initialization Alive received.\n");
6449 if (iwl_set_ucode_ptrs(priv)) {
6450 /* Runtime instruction load won't happen;
6451 * take it all the way back down so we can try again */
6452 IWL_DEBUG_INFO("Couldn't set up uCode pointers.\n");
6453 goto restart;
6454 }
6455 return;
6456
6457 restart:
6458 queue_work(priv->workqueue, &priv->restart);
6459 }
6460
6461
6462 /**
6463 * iwl_alive_start - called after REPLY_ALIVE notification received
6464 * from protocol/runtime uCode (initialization uCode's
6465 * Alive gets handled by iwl_init_alive_start()).
6466 */
6467 static void iwl_alive_start(struct iwl_priv *priv)
6468 {
6469 int rc = 0;
6470
6471 IWL_DEBUG_INFO("Runtime Alive received.\n");
6472
6473 if (priv->card_alive.is_valid != UCODE_VALID_OK) {
6474 /* We had an error bringing up the hardware, so take it
6475 * all the way back down so we can try again */
6476 IWL_DEBUG_INFO("Alive failed.\n");
6477 goto restart;
6478 }
6479
6480 /* Initialize uCode has loaded Runtime uCode ... verify inst image.
6481 * This is a paranoid check, because we would not have gotten the
6482 * "runtime" alive if code weren't properly loaded. */
6483 if (iwl_verify_ucode(priv)) {
6484 /* Runtime instruction load was bad;
6485 * take it all the way back down so we can try again */
6486 IWL_DEBUG_INFO("Bad runtime uCode load.\n");
6487 goto restart;
6488 }
6489
6490 iwl_clear_stations_table(priv);
6491
6492 rc = iwl4965_alive_notify(priv);
6493 if (rc) {
6494 IWL_WARNING("Could not complete ALIVE transition [ntf]: %d\n",
6495 rc);
6496 goto restart;
6497 }
6498
6499 /* After the ALIVE response, we can process host commands */
6500 set_bit(STATUS_ALIVE, &priv->status);
6501
6502 /* Clear out the uCode error bit if it is set */
6503 clear_bit(STATUS_FW_ERROR, &priv->status);
6504
6505 rc = iwl_init_channel_map(priv);
6506 if (rc) {
6507 IWL_ERROR("initializing regulatory failed: %d\n", rc);
6508 return;
6509 }
6510
6511 iwl_init_geos(priv);
6512
6513 if (iwl_is_rfkill(priv))
6514 return;
6515
6516 if (!priv->mac80211_registered) {
6517 /* Unlock so any user space entry points can call back into
6518 * the driver without a deadlock... */
6519 mutex_unlock(&priv->mutex);
6520 iwl_rate_control_register(priv->hw);
6521 rc = ieee80211_register_hw(priv->hw);
6522 priv->hw->conf.beacon_int = 100;
6523 mutex_lock(&priv->mutex);
6524
6525 if (rc) {
6526 IWL_ERROR("Failed to register network "
6527 "device (error %d)\n", rc);
6528 return;
6529 }
6530
6531 priv->mac80211_registered = 1;
6532
6533 iwl_reset_channel_flag(priv);
6534 } else
6535 ieee80211_start_queues(priv->hw);
6536
6537 priv->active_rate = priv->rates_mask;
6538 priv->active_rate_basic = priv->rates_mask & IWL_BASIC_RATES_MASK;
6539
6540 iwl_send_power_mode(priv, IWL_POWER_LEVEL(priv->power_mode));
6541
6542 if (iwl_is_associated(priv)) {
6543 struct iwl_rxon_cmd *active_rxon =
6544 (struct iwl_rxon_cmd *)(&priv->active_rxon);
6545
6546 memcpy(&priv->staging_rxon, &priv->active_rxon,
6547 sizeof(priv->staging_rxon));
6548 active_rxon->filter_flags &= ~RXON_FILTER_ASSOC_MSK;
6549 } else {
6550 /* Initialize our rx_config data */
6551 iwl_connection_init_rx_config(priv);
6552 memcpy(priv->staging_rxon.node_addr, priv->mac_addr, ETH_ALEN);
6553 }
6554
6555 /* Configure BT coexistence */
6556 iwl_send_bt_config(priv);
6557
6558 /* Configure the adapter for unassociated operation */
6559 iwl_commit_rxon(priv);
6560
6561 /* At this point, the NIC is initialized and operational */
6562 priv->notif_missed_beacons = 0;
6563 set_bit(STATUS_READY, &priv->status);
6564
6565 iwl4965_rf_kill_ct_config(priv);
6566 IWL_DEBUG_INFO("ALIVE processing complete.\n");
6567
6568 if (priv->error_recovering)
6569 iwl_error_recovery(priv);
6570
6571 return;
6572
6573 restart:
6574 queue_work(priv->workqueue, &priv->restart);
6575 }
6576
6577 static void iwl_cancel_deferred_work(struct iwl_priv *priv);
6578
6579 static void __iwl_down(struct iwl_priv *priv)
6580 {
6581 unsigned long flags;
6582 int exit_pending = test_bit(STATUS_EXIT_PENDING, &priv->status);
6583 struct ieee80211_conf *conf = NULL;
6584
6585 IWL_DEBUG_INFO(DRV_NAME " is going down\n");
6586
6587 conf = ieee80211_get_hw_conf(priv->hw);
6588
6589 if (!exit_pending)
6590 set_bit(STATUS_EXIT_PENDING, &priv->status);
6591
6592 iwl_clear_stations_table(priv);
6593
6594 /* Unblock any waiting calls */
6595 wake_up_interruptible_all(&priv->wait_command_queue);
6596
6597 iwl_cancel_deferred_work(priv);
6598
6599 /* Wipe out the EXIT_PENDING status bit if we are not actually
6600 * exiting the module */
6601 if (!exit_pending)
6602 clear_bit(STATUS_EXIT_PENDING, &priv->status);
6603
6604 /* stop and reset the on-board processor */
6605 iwl_write32(priv, CSR_RESET, CSR_RESET_REG_FLAG_NEVO_RESET);
6606
6607 /* tell the device to stop sending interrupts */
6608 iwl_disable_interrupts(priv);
6609
6610 if (priv->mac80211_registered)
6611 ieee80211_stop_queues(priv->hw);
6612
6613 /* If we have not previously called iwl_init() then
6614 * clear all bits but the RF Kill and SUSPEND bits and return */
6615 if (!iwl_is_init(priv)) {
6616 priv->status = test_bit(STATUS_RF_KILL_HW, &priv->status) <<
6617 STATUS_RF_KILL_HW |
6618 test_bit(STATUS_RF_KILL_SW, &priv->status) <<
6619 STATUS_RF_KILL_SW |
6620 test_bit(STATUS_IN_SUSPEND, &priv->status) <<
6621 STATUS_IN_SUSPEND;
6622 goto exit;
6623 }
6624
6625 /* ...otherwise clear out all the status bits but the RF Kill and
6626 * SUSPEND bits and continue taking the NIC down. */
6627 priv->status &= test_bit(STATUS_RF_KILL_HW, &priv->status) <<
6628 STATUS_RF_KILL_HW |
6629 test_bit(STATUS_RF_KILL_SW, &priv->status) <<
6630 STATUS_RF_KILL_SW |
6631 test_bit(STATUS_IN_SUSPEND, &priv->status) <<
6632 STATUS_IN_SUSPEND |
6633 test_bit(STATUS_FW_ERROR, &priv->status) <<
6634 STATUS_FW_ERROR;
6635
6636 spin_lock_irqsave(&priv->lock, flags);
6637 iwl_clear_bit(priv, CSR_GP_CNTRL, CSR_GP_CNTRL_REG_FLAG_MAC_ACCESS_REQ);
6638 spin_unlock_irqrestore(&priv->lock, flags);
6639
6640 iwl_hw_txq_ctx_stop(priv);
6641 iwl_hw_rxq_stop(priv);
6642
6643 spin_lock_irqsave(&priv->lock, flags);
6644 if (!iwl_grab_restricted_access(priv)) {
6645 iwl_write_restricted_reg(priv, APMG_CLK_DIS_REG,
6646 APMG_CLK_VAL_DMA_CLK_RQT);
6647 iwl_release_restricted_access(priv);
6648 }
6649 spin_unlock_irqrestore(&priv->lock, flags);
6650
6651 udelay(5);
6652
6653 iwl_hw_nic_stop_master(priv);
6654 iwl_set_bit(priv, CSR_RESET, CSR_RESET_REG_FLAG_SW_RESET);
6655 iwl_hw_nic_reset(priv);
6656
6657 exit:
6658 memset(&priv->card_alive, 0, sizeof(struct iwl_alive_resp));
6659
6660 if (priv->ibss_beacon)
6661 dev_kfree_skb(priv->ibss_beacon);
6662 priv->ibss_beacon = NULL;
6663
6664 /* clear out any free frames */
6665 iwl_clear_free_frames(priv);
6666 }
6667
6668 static void iwl_down(struct iwl_priv *priv)
6669 {
6670 mutex_lock(&priv->mutex);
6671 __iwl_down(priv);
6672 mutex_unlock(&priv->mutex);
6673 }
6674
6675 #define MAX_HW_RESTARTS 5
6676
6677 static int __iwl_up(struct iwl_priv *priv)
6678 {
6679 DECLARE_MAC_BUF(mac);
6680 int rc, i;
6681 u32 hw_rf_kill = 0;
6682
6683 if (test_bit(STATUS_EXIT_PENDING, &priv->status)) {
6684 IWL_WARNING("Exit pending; will not bring the NIC up\n");
6685 return -EIO;
6686 }
6687
6688 if (test_bit(STATUS_RF_KILL_SW, &priv->status)) {
6689 IWL_WARNING("Radio disabled by SW RF kill (module "
6690 "parameter)\n");
6691 return 0;
6692 }
6693
6694 iwl_write32(priv, CSR_INT, 0xFFFFFFFF);
6695
6696 rc = iwl_hw_nic_init(priv);
6697 if (rc) {
6698 IWL_ERROR("Unable to int nic\n");
6699 return rc;
6700 }
6701
6702 /* make sure rfkill handshake bits are cleared */
6703 iwl_write32(priv, CSR_UCODE_DRV_GP1_CLR, CSR_UCODE_SW_BIT_RFKILL);
6704 iwl_write32(priv, CSR_UCODE_DRV_GP1_CLR,
6705 CSR_UCODE_DRV_GP1_BIT_CMD_BLOCKED);
6706
6707 /* clear (again), then enable host interrupts */
6708 iwl_write32(priv, CSR_INT, 0xFFFFFFFF);
6709 iwl_enable_interrupts(priv);
6710
6711 /* really make sure rfkill handshake bits are cleared */
6712 iwl_write32(priv, CSR_UCODE_DRV_GP1_CLR, CSR_UCODE_SW_BIT_RFKILL);
6713 iwl_write32(priv, CSR_UCODE_DRV_GP1_CLR, CSR_UCODE_SW_BIT_RFKILL);
6714
6715 /* Copy original ucode data image from disk into backup cache.
6716 * This will be used to initialize the on-board processor's
6717 * data SRAM for a clean start when the runtime program first loads. */
6718 memcpy(priv->ucode_data_backup.v_addr, priv->ucode_data.v_addr,
6719 priv->ucode_data.len);
6720
6721 /* If platform's RF_KILL switch is set to KILL,
6722 * wait for BIT_INT_RF_KILL interrupt before loading uCode
6723 * and getting things started */
6724 if (!(iwl_read32(priv, CSR_GP_CNTRL) &
6725 CSR_GP_CNTRL_REG_FLAG_HW_RF_KILL_SW))
6726 hw_rf_kill = 1;
6727
6728 if (test_bit(STATUS_RF_KILL_HW, &priv->status) || hw_rf_kill) {
6729 IWL_WARNING("Radio disabled by HW RF Kill switch\n");
6730 return 0;
6731 }
6732
6733 for (i = 0; i < MAX_HW_RESTARTS; i++) {
6734
6735 iwl_clear_stations_table(priv);
6736
6737 /* load bootstrap state machine,
6738 * load bootstrap program into processor's memory,
6739 * prepare to load the "initialize" uCode */
6740 rc = iwl_load_bsm(priv);
6741
6742 if (rc) {
6743 IWL_ERROR("Unable to set up bootstrap uCode: %d\n", rc);
6744 continue;
6745 }
6746
6747 /* start card; "initialize" will load runtime ucode */
6748 iwl_nic_start(priv);
6749
6750 /* MAC Address location in EEPROM same for 3945/4965 */
6751 get_eeprom_mac(priv, priv->mac_addr);
6752 IWL_DEBUG_INFO("MAC address: %s\n",
6753 print_mac(mac, priv->mac_addr));
6754
6755 SET_IEEE80211_PERM_ADDR(priv->hw, priv->mac_addr);
6756
6757 IWL_DEBUG_INFO(DRV_NAME " is coming up\n");
6758
6759 return 0;
6760 }
6761
6762 set_bit(STATUS_EXIT_PENDING, &priv->status);
6763 __iwl_down(priv);
6764
6765 /* tried to restart and config the device for as long as our
6766 * patience could withstand */
6767 IWL_ERROR("Unable to initialize device after %d attempts.\n", i);
6768 return -EIO;
6769 }
6770
6771
6772 /*****************************************************************************
6773 *
6774 * Workqueue callbacks
6775 *
6776 *****************************************************************************/
6777
6778 static void iwl_bg_init_alive_start(struct work_struct *data)
6779 {
6780 struct iwl_priv *priv =
6781 container_of(data, struct iwl_priv, init_alive_start.work);
6782
6783 if (test_bit(STATUS_EXIT_PENDING, &priv->status))
6784 return;
6785
6786 mutex_lock(&priv->mutex);
6787 iwl_init_alive_start(priv);
6788 mutex_unlock(&priv->mutex);
6789 }
6790
6791 static void iwl_bg_alive_start(struct work_struct *data)
6792 {
6793 struct iwl_priv *priv =
6794 container_of(data, struct iwl_priv, alive_start.work);
6795
6796 if (test_bit(STATUS_EXIT_PENDING, &priv->status))
6797 return;
6798
6799 mutex_lock(&priv->mutex);
6800 iwl_alive_start(priv);
6801 mutex_unlock(&priv->mutex);
6802 }
6803
6804 static void iwl_bg_rf_kill(struct work_struct *work)
6805 {
6806 struct iwl_priv *priv = container_of(work, struct iwl_priv, rf_kill);
6807
6808 wake_up_interruptible(&priv->wait_command_queue);
6809
6810 if (test_bit(STATUS_EXIT_PENDING, &priv->status))
6811 return;
6812
6813 mutex_lock(&priv->mutex);
6814
6815 if (!iwl_is_rfkill(priv)) {
6816 IWL_DEBUG(IWL_DL_INFO | IWL_DL_RF_KILL,
6817 "HW and/or SW RF Kill no longer active, restarting "
6818 "device\n");
6819 if (!test_bit(STATUS_EXIT_PENDING, &priv->status))
6820 queue_work(priv->workqueue, &priv->restart);
6821 } else {
6822
6823 if (!test_bit(STATUS_RF_KILL_HW, &priv->status))
6824 IWL_DEBUG_RF_KILL("Can not turn radio back on - "
6825 "disabled by SW switch\n");
6826 else
6827 IWL_WARNING("Radio Frequency Kill Switch is On:\n"
6828 "Kill switch must be turned off for "
6829 "wireless networking to work.\n");
6830 }
6831 mutex_unlock(&priv->mutex);
6832 }
6833
6834 #define IWL_SCAN_CHECK_WATCHDOG (7 * HZ)
6835
6836 static void iwl_bg_scan_check(struct work_struct *data)
6837 {
6838 struct iwl_priv *priv =
6839 container_of(data, struct iwl_priv, scan_check.work);
6840
6841 if (test_bit(STATUS_EXIT_PENDING, &priv->status))
6842 return;
6843
6844 mutex_lock(&priv->mutex);
6845 if (test_bit(STATUS_SCANNING, &priv->status) ||
6846 test_bit(STATUS_SCAN_ABORTING, &priv->status)) {
6847 IWL_DEBUG(IWL_DL_INFO | IWL_DL_SCAN,
6848 "Scan completion watchdog resetting adapter (%dms)\n",
6849 jiffies_to_msecs(IWL_SCAN_CHECK_WATCHDOG));
6850
6851 if (!test_bit(STATUS_EXIT_PENDING, &priv->status))
6852 iwl_send_scan_abort(priv);
6853 }
6854 mutex_unlock(&priv->mutex);
6855 }
6856
6857 static void iwl_bg_request_scan(struct work_struct *data)
6858 {
6859 struct iwl_priv *priv =
6860 container_of(data, struct iwl_priv, request_scan);
6861 struct iwl_host_cmd cmd = {
6862 .id = REPLY_SCAN_CMD,
6863 .len = sizeof(struct iwl_scan_cmd),
6864 .meta.flags = CMD_SIZE_HUGE,
6865 };
6866 int rc = 0;
6867 struct iwl_scan_cmd *scan;
6868 struct ieee80211_conf *conf = NULL;
6869 u8 direct_mask;
6870 int phymode;
6871
6872 conf = ieee80211_get_hw_conf(priv->hw);
6873
6874 mutex_lock(&priv->mutex);
6875
6876 if (!iwl_is_ready(priv)) {
6877 IWL_WARNING("request scan called when driver not ready.\n");
6878 goto done;
6879 }
6880
6881 /* Make sure the scan wasn't cancelled before this queued work
6882 * was given the chance to run... */
6883 if (!test_bit(STATUS_SCANNING, &priv->status))
6884 goto done;
6885
6886 /* This should never be called or scheduled if there is currently
6887 * a scan active in the hardware. */
6888 if (test_bit(STATUS_SCAN_HW, &priv->status)) {
6889 IWL_DEBUG_INFO("Multiple concurrent scan requests in parallel. "
6890 "Ignoring second request.\n");
6891 rc = -EIO;
6892 goto done;
6893 }
6894
6895 if (test_bit(STATUS_EXIT_PENDING, &priv->status)) {
6896 IWL_DEBUG_SCAN("Aborting scan due to device shutdown\n");
6897 goto done;
6898 }
6899
6900 if (test_bit(STATUS_SCAN_ABORTING, &priv->status)) {
6901 IWL_DEBUG_HC("Scan request while abort pending. Queuing.\n");
6902 goto done;
6903 }
6904
6905 if (iwl_is_rfkill(priv)) {
6906 IWL_DEBUG_HC("Aborting scan due to RF Kill activation\n");
6907 goto done;
6908 }
6909
6910 if (!test_bit(STATUS_READY, &priv->status)) {
6911 IWL_DEBUG_HC("Scan request while uninitialized. Queuing.\n");
6912 goto done;
6913 }
6914
6915 if (!priv->scan_bands) {
6916 IWL_DEBUG_HC("Aborting scan due to no requested bands\n");
6917 goto done;
6918 }
6919
6920 if (!priv->scan) {
6921 priv->scan = kmalloc(sizeof(struct iwl_scan_cmd) +
6922 IWL_MAX_SCAN_SIZE, GFP_KERNEL);
6923 if (!priv->scan) {
6924 rc = -ENOMEM;
6925 goto done;
6926 }
6927 }
6928 scan = priv->scan;
6929 memset(scan, 0, sizeof(struct iwl_scan_cmd) + IWL_MAX_SCAN_SIZE);
6930
6931 scan->quiet_plcp_th = IWL_PLCP_QUIET_THRESH;
6932 scan->quiet_time = IWL_ACTIVE_QUIET_TIME;
6933
6934 if (iwl_is_associated(priv)) {
6935 u16 interval = 0;
6936 u32 extra;
6937 u32 suspend_time = 100;
6938 u32 scan_suspend_time = 100;
6939 unsigned long flags;
6940
6941 IWL_DEBUG_INFO("Scanning while associated...\n");
6942
6943 spin_lock_irqsave(&priv->lock, flags);
6944 interval = priv->beacon_int;
6945 spin_unlock_irqrestore(&priv->lock, flags);
6946
6947 scan->suspend_time = 0;
6948 scan->max_out_time = cpu_to_le32(200 * 1024);
6949 if (!interval)
6950 interval = suspend_time;
6951
6952 extra = (suspend_time / interval) << 22;
6953 scan_suspend_time = (extra |
6954 ((suspend_time % interval) * 1024));
6955 scan->suspend_time = cpu_to_le32(scan_suspend_time);
6956 IWL_DEBUG_SCAN("suspend_time 0x%X beacon interval %d\n",
6957 scan_suspend_time, interval);
6958 }
6959
6960 /* We should add the ability for user to lock to PASSIVE ONLY */
6961 if (priv->one_direct_scan) {
6962 IWL_DEBUG_SCAN
6963 ("Kicking off one direct scan for '%s'\n",
6964 iwl_escape_essid(priv->direct_ssid,
6965 priv->direct_ssid_len));
6966 scan->direct_scan[0].id = WLAN_EID_SSID;
6967 scan->direct_scan[0].len = priv->direct_ssid_len;
6968 memcpy(scan->direct_scan[0].ssid,
6969 priv->direct_ssid, priv->direct_ssid_len);
6970 direct_mask = 1;
6971 } else if (!iwl_is_associated(priv) && priv->essid_len) {
6972 scan->direct_scan[0].id = WLAN_EID_SSID;
6973 scan->direct_scan[0].len = priv->essid_len;
6974 memcpy(scan->direct_scan[0].ssid, priv->essid, priv->essid_len);
6975 direct_mask = 1;
6976 } else
6977 direct_mask = 0;
6978
6979 /* We don't build a direct scan probe request; the uCode will do
6980 * that based on the direct_mask added to each channel entry */
6981 scan->tx_cmd.len = cpu_to_le16(
6982 iwl_fill_probe_req(priv, (struct ieee80211_mgmt *)scan->data,
6983 IWL_MAX_SCAN_SIZE - sizeof(scan), 0));
6984 scan->tx_cmd.tx_flags = TX_CMD_FLG_SEQ_CTL_MSK;
6985 scan->tx_cmd.sta_id = priv->hw_setting.bcast_sta_id;
6986 scan->tx_cmd.stop_time.life_time = TX_CMD_LIFE_TIME_INFINITE;
6987
6988 /* flags + rate selection */
6989
6990 scan->tx_cmd.tx_flags |= cpu_to_le32(0x200);
6991
6992 switch (priv->scan_bands) {
6993 case 2:
6994 scan->flags = RXON_FLG_BAND_24G_MSK | RXON_FLG_AUTO_DETECT_MSK;
6995 scan->tx_cmd.rate_n_flags =
6996 iwl_hw_set_rate_n_flags(IWL_RATE_1M_PLCP,
6997 RATE_MCS_ANT_B_MSK|RATE_MCS_CCK_MSK);
6998
6999 scan->good_CRC_th = 0;
7000 phymode = MODE_IEEE80211G;
7001 break;
7002
7003 case 1:
7004 scan->tx_cmd.rate_n_flags =
7005 iwl_hw_set_rate_n_flags(IWL_RATE_6M_PLCP,
7006 RATE_MCS_ANT_B_MSK);
7007 scan->good_CRC_th = IWL_GOOD_CRC_TH;
7008 phymode = MODE_IEEE80211A;
7009 break;
7010
7011 default:
7012 IWL_WARNING("Invalid scan band count\n");
7013 goto done;
7014 }
7015
7016 /* select Rx chains */
7017
7018 /* Force use of chains B and C (0x6) for scan Rx.
7019 * Avoid A (0x1) because of its off-channel reception on A-band.
7020 * MIMO is not used here, but value is required to make uCode happy. */
7021 scan->rx_chain = RXON_RX_CHAIN_DRIVER_FORCE_MSK |
7022 cpu_to_le16((0x7 << RXON_RX_CHAIN_VALID_POS) |
7023 (0x6 << RXON_RX_CHAIN_FORCE_SEL_POS) |
7024 (0x7 << RXON_RX_CHAIN_FORCE_MIMO_SEL_POS));
7025
7026 if (priv->iw_mode == IEEE80211_IF_TYPE_MNTR)
7027 scan->filter_flags = RXON_FILTER_PROMISC_MSK;
7028
7029 if (direct_mask)
7030 IWL_DEBUG_SCAN
7031 ("Initiating direct scan for %s.\n",
7032 iwl_escape_essid(priv->essid, priv->essid_len));
7033 else
7034 IWL_DEBUG_SCAN("Initiating indirect scan.\n");
7035
7036 scan->channel_count =
7037 iwl_get_channels_for_scan(
7038 priv, phymode, 1, /* active */
7039 direct_mask,
7040 (void *)&scan->data[le16_to_cpu(scan->tx_cmd.len)]);
7041
7042 cmd.len += le16_to_cpu(scan->tx_cmd.len) +
7043 scan->channel_count * sizeof(struct iwl_scan_channel);
7044 cmd.data = scan;
7045 scan->len = cpu_to_le16(cmd.len);
7046
7047 set_bit(STATUS_SCAN_HW, &priv->status);
7048 rc = iwl_send_cmd_sync(priv, &cmd);
7049 if (rc)
7050 goto done;
7051
7052 queue_delayed_work(priv->workqueue, &priv->scan_check,
7053 IWL_SCAN_CHECK_WATCHDOG);
7054
7055 mutex_unlock(&priv->mutex);
7056 return;
7057
7058 done:
7059 /* inform mac80211 sacn aborted */
7060 queue_work(priv->workqueue, &priv->scan_completed);
7061 mutex_unlock(&priv->mutex);
7062 }
7063
7064 static void iwl_bg_up(struct work_struct *data)
7065 {
7066 struct iwl_priv *priv = container_of(data, struct iwl_priv, up);
7067
7068 if (test_bit(STATUS_EXIT_PENDING, &priv->status))
7069 return;
7070
7071 mutex_lock(&priv->mutex);
7072 __iwl_up(priv);
7073 mutex_unlock(&priv->mutex);
7074 }
7075
7076 static void iwl_bg_restart(struct work_struct *data)
7077 {
7078 struct iwl_priv *priv = container_of(data, struct iwl_priv, restart);
7079
7080 if (test_bit(STATUS_EXIT_PENDING, &priv->status))
7081 return;
7082
7083 iwl_down(priv);
7084 queue_work(priv->workqueue, &priv->up);
7085 }
7086
7087 static void iwl_bg_rx_replenish(struct work_struct *data)
7088 {
7089 struct iwl_priv *priv =
7090 container_of(data, struct iwl_priv, rx_replenish);
7091
7092 if (test_bit(STATUS_EXIT_PENDING, &priv->status))
7093 return;
7094
7095 mutex_lock(&priv->mutex);
7096 iwl_rx_replenish(priv);
7097 mutex_unlock(&priv->mutex);
7098 }
7099
7100 static void iwl_bg_post_associate(struct work_struct *data)
7101 {
7102 struct iwl_priv *priv = container_of(data, struct iwl_priv,
7103 post_associate.work);
7104
7105 int rc = 0;
7106 struct ieee80211_conf *conf = NULL;
7107 DECLARE_MAC_BUF(mac);
7108
7109 if (priv->iw_mode == IEEE80211_IF_TYPE_AP) {
7110 IWL_ERROR("%s Should not be called in AP mode\n", __FUNCTION__);
7111 return;
7112 }
7113
7114 IWL_DEBUG_ASSOC("Associated as %d to: %s\n",
7115 priv->assoc_id,
7116 print_mac(mac, priv->active_rxon.bssid_addr));
7117
7118
7119 if (test_bit(STATUS_EXIT_PENDING, &priv->status))
7120 return;
7121
7122 mutex_lock(&priv->mutex);
7123
7124 if (!priv->interface_id || !priv->is_open) {
7125 mutex_unlock(&priv->mutex);
7126 return;
7127 }
7128 iwl_scan_cancel_timeout(priv, 200);
7129
7130 conf = ieee80211_get_hw_conf(priv->hw);
7131
7132 priv->staging_rxon.filter_flags &= ~RXON_FILTER_ASSOC_MSK;
7133 iwl_commit_rxon(priv);
7134
7135 memset(&priv->rxon_timing, 0, sizeof(struct iwl_rxon_time_cmd));
7136 iwl_setup_rxon_timing(priv);
7137 rc = iwl_send_cmd_pdu(priv, REPLY_RXON_TIMING,
7138 sizeof(priv->rxon_timing), &priv->rxon_timing);
7139 if (rc)
7140 IWL_WARNING("REPLY_RXON_TIMING failed - "
7141 "Attempting to continue.\n");
7142
7143 priv->staging_rxon.filter_flags |= RXON_FILTER_ASSOC_MSK;
7144
7145 #ifdef CONFIG_IWLWIFI_HT
7146 if (priv->is_ht_enabled && priv->current_assoc_ht.is_ht)
7147 iwl4965_set_rxon_ht(priv, &priv->current_assoc_ht);
7148 else {
7149 priv->active_rate_ht[0] = 0;
7150 priv->active_rate_ht[1] = 0;
7151 priv->current_channel_width = IWL_CHANNEL_WIDTH_20MHZ;
7152 }
7153 #endif /* CONFIG_IWLWIFI_HT*/
7154 iwl4965_set_rxon_chain(priv);
7155 priv->staging_rxon.assoc_id = cpu_to_le16(priv->assoc_id);
7156
7157 IWL_DEBUG_ASSOC("assoc id %d beacon interval %d\n",
7158 priv->assoc_id, priv->beacon_int);
7159
7160 if (priv->assoc_capability & WLAN_CAPABILITY_SHORT_PREAMBLE)
7161 priv->staging_rxon.flags |= RXON_FLG_SHORT_PREAMBLE_MSK;
7162 else
7163 priv->staging_rxon.flags &= ~RXON_FLG_SHORT_PREAMBLE_MSK;
7164
7165 if (priv->staging_rxon.flags & RXON_FLG_BAND_24G_MSK) {
7166 if (priv->assoc_capability & WLAN_CAPABILITY_SHORT_SLOT_TIME)
7167 priv->staging_rxon.flags |= RXON_FLG_SHORT_SLOT_MSK;
7168 else
7169 priv->staging_rxon.flags &= ~RXON_FLG_SHORT_SLOT_MSK;
7170
7171 if (priv->iw_mode == IEEE80211_IF_TYPE_IBSS)
7172 priv->staging_rxon.flags &= ~RXON_FLG_SHORT_SLOT_MSK;
7173
7174 }
7175
7176 iwl_commit_rxon(priv);
7177
7178 switch (priv->iw_mode) {
7179 case IEEE80211_IF_TYPE_STA:
7180 iwl_rate_scale_init(priv->hw, IWL_AP_ID);
7181 break;
7182
7183 case IEEE80211_IF_TYPE_IBSS:
7184
7185 /* clear out the station table */
7186 iwl_clear_stations_table(priv);
7187
7188 iwl_rxon_add_station(priv, BROADCAST_ADDR, 0);
7189 iwl_rxon_add_station(priv, priv->bssid, 0);
7190 iwl_rate_scale_init(priv->hw, IWL_STA_ID);
7191 iwl_send_beacon_cmd(priv);
7192
7193 break;
7194
7195 default:
7196 IWL_ERROR("%s Should not be called in %d mode\n",
7197 __FUNCTION__, priv->iw_mode);
7198 break;
7199 }
7200
7201 iwl_sequence_reset(priv);
7202
7203 #ifdef CONFIG_IWLWIFI_SENSITIVITY
7204 /* Enable Rx differential gain and sensitivity calibrations */
7205 iwl4965_chain_noise_reset(priv);
7206 priv->start_calib = 1;
7207 #endif /* CONFIG_IWLWIFI_SENSITIVITY */
7208
7209 if (priv->iw_mode == IEEE80211_IF_TYPE_IBSS)
7210 priv->assoc_station_added = 1;
7211
7212 #ifdef CONFIG_IWLWIFI_QOS
7213 iwl_activate_qos(priv, 0);
7214 #endif /* CONFIG_IWLWIFI_QOS */
7215 mutex_unlock(&priv->mutex);
7216 }
7217
7218 static void iwl_bg_abort_scan(struct work_struct *work)
7219 {
7220 struct iwl_priv *priv = container_of(work, struct iwl_priv,
7221 abort_scan);
7222
7223 if (!iwl_is_ready(priv))
7224 return;
7225
7226 mutex_lock(&priv->mutex);
7227
7228 set_bit(STATUS_SCAN_ABORTING, &priv->status);
7229 iwl_send_scan_abort(priv);
7230
7231 mutex_unlock(&priv->mutex);
7232 }
7233
7234 static void iwl_bg_scan_completed(struct work_struct *work)
7235 {
7236 struct iwl_priv *priv =
7237 container_of(work, struct iwl_priv, scan_completed);
7238
7239 IWL_DEBUG(IWL_DL_INFO | IWL_DL_SCAN, "SCAN complete scan\n");
7240
7241 if (test_bit(STATUS_EXIT_PENDING, &priv->status))
7242 return;
7243
7244 ieee80211_scan_completed(priv->hw);
7245
7246 /* Since setting the TXPOWER may have been deferred while
7247 * performing the scan, fire one off */
7248 mutex_lock(&priv->mutex);
7249 iwl_hw_reg_send_txpower(priv);
7250 mutex_unlock(&priv->mutex);
7251 }
7252
7253 /*****************************************************************************
7254 *
7255 * mac80211 entry point functions
7256 *
7257 *****************************************************************************/
7258
7259 static int iwl_mac_start(struct ieee80211_hw *hw)
7260 {
7261 struct iwl_priv *priv = hw->priv;
7262
7263 IWL_DEBUG_MAC80211("enter\n");
7264
7265 /* we should be verifying the device is ready to be opened */
7266 mutex_lock(&priv->mutex);
7267
7268 priv->is_open = 1;
7269
7270 if (!iwl_is_rfkill(priv))
7271 ieee80211_start_queues(priv->hw);
7272
7273 mutex_unlock(&priv->mutex);
7274 IWL_DEBUG_MAC80211("leave\n");
7275 return 0;
7276 }
7277
7278 static void iwl_mac_stop(struct ieee80211_hw *hw)
7279 {
7280 struct iwl_priv *priv = hw->priv;
7281
7282 IWL_DEBUG_MAC80211("enter\n");
7283
7284
7285 mutex_lock(&priv->mutex);
7286 /* stop mac, cancel any scan request and clear
7287 * RXON_FILTER_ASSOC_MSK BIT
7288 */
7289 priv->is_open = 0;
7290 iwl_scan_cancel_timeout(priv, 100);
7291 cancel_delayed_work(&priv->post_associate);
7292 priv->staging_rxon.filter_flags &= ~RXON_FILTER_ASSOC_MSK;
7293 iwl_commit_rxon(priv);
7294 mutex_unlock(&priv->mutex);
7295
7296 IWL_DEBUG_MAC80211("leave\n");
7297 }
7298
7299 static int iwl_mac_tx(struct ieee80211_hw *hw, struct sk_buff *skb,
7300 struct ieee80211_tx_control *ctl)
7301 {
7302 struct iwl_priv *priv = hw->priv;
7303
7304 IWL_DEBUG_MAC80211("enter\n");
7305
7306 if (priv->iw_mode == IEEE80211_IF_TYPE_MNTR) {
7307 IWL_DEBUG_MAC80211("leave - monitor\n");
7308 return -1;
7309 }
7310
7311 IWL_DEBUG_TX("dev->xmit(%d bytes) at rate 0x%02x\n", skb->len,
7312 ctl->tx_rate);
7313
7314 if (iwl_tx_skb(priv, skb, ctl))
7315 dev_kfree_skb_any(skb);
7316
7317 IWL_DEBUG_MAC80211("leave\n");
7318 return 0;
7319 }
7320
7321 static int iwl_mac_add_interface(struct ieee80211_hw *hw,
7322 struct ieee80211_if_init_conf *conf)
7323 {
7324 struct iwl_priv *priv = hw->priv;
7325 unsigned long flags;
7326 DECLARE_MAC_BUF(mac);
7327
7328 IWL_DEBUG_MAC80211("enter: id %d, type %d\n", conf->if_id, conf->type);
7329 if (conf->mac_addr)
7330 IWL_DEBUG_MAC80211("enter: MAC %s\n",
7331 print_mac(mac, conf->mac_addr));
7332
7333 if (priv->interface_id) {
7334 IWL_DEBUG_MAC80211("leave - interface_id != 0\n");
7335 return 0;
7336 }
7337
7338 spin_lock_irqsave(&priv->lock, flags);
7339 priv->interface_id = conf->if_id;
7340
7341 spin_unlock_irqrestore(&priv->lock, flags);
7342
7343 mutex_lock(&priv->mutex);
7344 iwl_set_mode(priv, conf->type);
7345
7346 IWL_DEBUG_MAC80211("leave\n");
7347 mutex_unlock(&priv->mutex);
7348
7349 return 0;
7350 }
7351
7352 /**
7353 * iwl_mac_config - mac80211 config callback
7354 *
7355 * We ignore conf->flags & IEEE80211_CONF_SHORT_SLOT_TIME since it seems to
7356 * be set inappropriately and the driver currently sets the hardware up to
7357 * use it whenever needed.
7358 */
7359 static int iwl_mac_config(struct ieee80211_hw *hw, struct ieee80211_conf *conf)
7360 {
7361 struct iwl_priv *priv = hw->priv;
7362 const struct iwl_channel_info *ch_info;
7363 unsigned long flags;
7364
7365 mutex_lock(&priv->mutex);
7366 IWL_DEBUG_MAC80211("enter to channel %d\n", conf->channel);
7367
7368 if (!iwl_is_ready(priv)) {
7369 IWL_DEBUG_MAC80211("leave - not ready\n");
7370 mutex_unlock(&priv->mutex);
7371 return -EIO;
7372 }
7373
7374 /* TODO: Figure out how to get ieee80211_local->sta_scanning w/ only
7375 * what is exposed through include/ declrations */
7376 if (unlikely(!iwl_param_disable_hw_scan &&
7377 test_bit(STATUS_SCANNING, &priv->status))) {
7378 IWL_DEBUG_MAC80211("leave - scanning\n");
7379 mutex_unlock(&priv->mutex);
7380 return 0;
7381 }
7382
7383 spin_lock_irqsave(&priv->lock, flags);
7384
7385 ch_info = iwl_get_channel_info(priv, conf->phymode, conf->channel);
7386 if (!is_channel_valid(ch_info)) {
7387 IWL_DEBUG_SCAN("Channel %d [%d] is INVALID for this SKU.\n",
7388 conf->channel, conf->phymode);
7389 IWL_DEBUG_MAC80211("leave - invalid channel\n");
7390 spin_unlock_irqrestore(&priv->lock, flags);
7391 mutex_unlock(&priv->mutex);
7392 return -EINVAL;
7393 }
7394
7395 #ifdef CONFIG_IWLWIFI_HT
7396 /* if we are switching fron ht to 2.4 clear flags
7397 * from any ht related info since 2.4 does not
7398 * support ht */
7399 if ((le16_to_cpu(priv->staging_rxon.channel) != conf->channel)
7400 #ifdef IEEE80211_CONF_CHANNEL_SWITCH
7401 && !(conf->flags & IEEE80211_CONF_CHANNEL_SWITCH)
7402 #endif
7403 )
7404 priv->staging_rxon.flags = 0;
7405 #endif /* CONFIG_IWLWIFI_HT */
7406
7407 iwl_set_rxon_channel(priv, conf->phymode, conf->channel);
7408
7409 iwl_set_flags_for_phymode(priv, conf->phymode);
7410
7411 /* The list of supported rates and rate mask can be different
7412 * for each phymode; since the phymode may have changed, reset
7413 * the rate mask to what mac80211 lists */
7414 iwl_set_rate(priv);
7415
7416 spin_unlock_irqrestore(&priv->lock, flags);
7417
7418 #ifdef IEEE80211_CONF_CHANNEL_SWITCH
7419 if (conf->flags & IEEE80211_CONF_CHANNEL_SWITCH) {
7420 iwl_hw_channel_switch(priv, conf->channel);
7421 mutex_unlock(&priv->mutex);
7422 return 0;
7423 }
7424 #endif
7425
7426 iwl_radio_kill_sw(priv, !conf->radio_enabled);
7427
7428 if (!conf->radio_enabled) {
7429 IWL_DEBUG_MAC80211("leave - radio disabled\n");
7430 mutex_unlock(&priv->mutex);
7431 return 0;
7432 }
7433
7434 if (iwl_is_rfkill(priv)) {
7435 IWL_DEBUG_MAC80211("leave - RF kill\n");
7436 mutex_unlock(&priv->mutex);
7437 return -EIO;
7438 }
7439
7440 iwl_set_rate(priv);
7441
7442 if (memcmp(&priv->active_rxon,
7443 &priv->staging_rxon, sizeof(priv->staging_rxon)))
7444 iwl_commit_rxon(priv);
7445 else
7446 IWL_DEBUG_INFO("No re-sending same RXON configuration.\n");
7447
7448 IWL_DEBUG_MAC80211("leave\n");
7449
7450 mutex_unlock(&priv->mutex);
7451
7452 return 0;
7453 }
7454
7455 static void iwl_config_ap(struct iwl_priv *priv)
7456 {
7457 int rc = 0;
7458
7459 if (priv->status & STATUS_EXIT_PENDING)
7460 return;
7461
7462 /* The following should be done only at AP bring up */
7463 if ((priv->active_rxon.filter_flags & RXON_FILTER_ASSOC_MSK) == 0) {
7464
7465 /* RXON - unassoc (to set timing command) */
7466 priv->staging_rxon.filter_flags &= ~RXON_FILTER_ASSOC_MSK;
7467 iwl_commit_rxon(priv);
7468
7469 /* RXON Timing */
7470 memset(&priv->rxon_timing, 0, sizeof(struct iwl_rxon_time_cmd));
7471 iwl_setup_rxon_timing(priv);
7472 rc = iwl_send_cmd_pdu(priv, REPLY_RXON_TIMING,
7473 sizeof(priv->rxon_timing), &priv->rxon_timing);
7474 if (rc)
7475 IWL_WARNING("REPLY_RXON_TIMING failed - "
7476 "Attempting to continue.\n");
7477
7478 iwl4965_set_rxon_chain(priv);
7479
7480 /* FIXME: what should be the assoc_id for AP? */
7481 priv->staging_rxon.assoc_id = cpu_to_le16(priv->assoc_id);
7482 if (priv->assoc_capability & WLAN_CAPABILITY_SHORT_PREAMBLE)
7483 priv->staging_rxon.flags |=
7484 RXON_FLG_SHORT_PREAMBLE_MSK;
7485 else
7486 priv->staging_rxon.flags &=
7487 ~RXON_FLG_SHORT_PREAMBLE_MSK;
7488
7489 if (priv->staging_rxon.flags & RXON_FLG_BAND_24G_MSK) {
7490 if (priv->assoc_capability &
7491 WLAN_CAPABILITY_SHORT_SLOT_TIME)
7492 priv->staging_rxon.flags |=
7493 RXON_FLG_SHORT_SLOT_MSK;
7494 else
7495 priv->staging_rxon.flags &=
7496 ~RXON_FLG_SHORT_SLOT_MSK;
7497
7498 if (priv->iw_mode == IEEE80211_IF_TYPE_IBSS)
7499 priv->staging_rxon.flags &=
7500 ~RXON_FLG_SHORT_SLOT_MSK;
7501 }
7502 /* restore RXON assoc */
7503 priv->staging_rxon.filter_flags |= RXON_FILTER_ASSOC_MSK;
7504 iwl_commit_rxon(priv);
7505 #ifdef CONFIG_IWLWIFI_QOS
7506 iwl_activate_qos(priv, 1);
7507 #endif
7508 iwl_rxon_add_station(priv, BROADCAST_ADDR, 0);
7509 }
7510 iwl_send_beacon_cmd(priv);
7511
7512 /* FIXME - we need to add code here to detect a totally new
7513 * configuration, reset the AP, unassoc, rxon timing, assoc,
7514 * clear sta table, add BCAST sta... */
7515 }
7516
7517 static int iwl_mac_config_interface(struct ieee80211_hw *hw, int if_id,
7518 struct ieee80211_if_conf *conf)
7519 {
7520 struct iwl_priv *priv = hw->priv;
7521 DECLARE_MAC_BUF(mac);
7522 unsigned long flags;
7523 int rc;
7524
7525 if (conf == NULL)
7526 return -EIO;
7527
7528 if ((priv->iw_mode == IEEE80211_IF_TYPE_AP) &&
7529 (!conf->beacon || !conf->ssid_len)) {
7530 IWL_DEBUG_MAC80211
7531 ("Leaving in AP mode because HostAPD is not ready.\n");
7532 return 0;
7533 }
7534
7535 mutex_lock(&priv->mutex);
7536
7537 IWL_DEBUG_MAC80211("enter: interface id %d\n", if_id);
7538 if (conf->bssid)
7539 IWL_DEBUG_MAC80211("bssid: %s\n",
7540 print_mac(mac, conf->bssid));
7541
7542 /*
7543 * very dubious code was here; the probe filtering flag is never set:
7544 *
7545 if (unlikely(test_bit(STATUS_SCANNING, &priv->status)) &&
7546 !(priv->hw->flags & IEEE80211_HW_NO_PROBE_FILTERING)) {
7547 */
7548 if (unlikely(test_bit(STATUS_SCANNING, &priv->status))) {
7549 IWL_DEBUG_MAC80211("leave - scanning\n");
7550 mutex_unlock(&priv->mutex);
7551 return 0;
7552 }
7553
7554 if (priv->interface_id != if_id) {
7555 IWL_DEBUG_MAC80211("leave - interface_id != if_id\n");
7556 mutex_unlock(&priv->mutex);
7557 return 0;
7558 }
7559
7560 if (priv->iw_mode == IEEE80211_IF_TYPE_AP) {
7561 if (!conf->bssid) {
7562 conf->bssid = priv->mac_addr;
7563 memcpy(priv->bssid, priv->mac_addr, ETH_ALEN);
7564 IWL_DEBUG_MAC80211("bssid was set to: %s\n",
7565 print_mac(mac, conf->bssid));
7566 }
7567 if (priv->ibss_beacon)
7568 dev_kfree_skb(priv->ibss_beacon);
7569
7570 priv->ibss_beacon = conf->beacon;
7571 }
7572
7573 if (conf->bssid && !is_zero_ether_addr(conf->bssid) &&
7574 !is_multicast_ether_addr(conf->bssid)) {
7575 /* If there is currently a HW scan going on in the background
7576 * then we need to cancel it else the RXON below will fail. */
7577 if (iwl_scan_cancel_timeout(priv, 100)) {
7578 IWL_WARNING("Aborted scan still in progress "
7579 "after 100ms\n");
7580 IWL_DEBUG_MAC80211("leaving - scan abort failed.\n");
7581 mutex_unlock(&priv->mutex);
7582 return -EAGAIN;
7583 }
7584 memcpy(priv->staging_rxon.bssid_addr, conf->bssid, ETH_ALEN);
7585
7586 /* TODO: Audit driver for usage of these members and see
7587 * if mac80211 deprecates them (priv->bssid looks like it
7588 * shouldn't be there, but I haven't scanned the IBSS code
7589 * to verify) - jpk */
7590 memcpy(priv->bssid, conf->bssid, ETH_ALEN);
7591
7592 if (priv->iw_mode == IEEE80211_IF_TYPE_AP)
7593 iwl_config_ap(priv);
7594 else {
7595 rc = iwl_commit_rxon(priv);
7596 if ((priv->iw_mode == IEEE80211_IF_TYPE_STA) && rc)
7597 iwl_rxon_add_station(
7598 priv, priv->active_rxon.bssid_addr, 1);
7599 }
7600
7601 } else {
7602 iwl_scan_cancel_timeout(priv, 100);
7603 priv->staging_rxon.filter_flags &= ~RXON_FILTER_ASSOC_MSK;
7604 iwl_commit_rxon(priv);
7605 }
7606
7607 spin_lock_irqsave(&priv->lock, flags);
7608 if (!conf->ssid_len)
7609 memset(priv->essid, 0, IW_ESSID_MAX_SIZE);
7610 else
7611 memcpy(priv->essid, conf->ssid, conf->ssid_len);
7612
7613 priv->essid_len = conf->ssid_len;
7614 spin_unlock_irqrestore(&priv->lock, flags);
7615
7616 IWL_DEBUG_MAC80211("leave\n");
7617 mutex_unlock(&priv->mutex);
7618
7619 return 0;
7620 }
7621
7622 static void iwl_configure_filter(struct ieee80211_hw *hw,
7623 unsigned int changed_flags,
7624 unsigned int *total_flags,
7625 int mc_count, struct dev_addr_list *mc_list)
7626 {
7627 /*
7628 * XXX: dummy
7629 * see also iwl_connection_init_rx_config
7630 */
7631 *total_flags = 0;
7632 }
7633
7634 static void iwl_mac_remove_interface(struct ieee80211_hw *hw,
7635 struct ieee80211_if_init_conf *conf)
7636 {
7637 struct iwl_priv *priv = hw->priv;
7638
7639 IWL_DEBUG_MAC80211("enter\n");
7640
7641 mutex_lock(&priv->mutex);
7642
7643 iwl_scan_cancel_timeout(priv, 100);
7644 cancel_delayed_work(&priv->post_associate);
7645 priv->staging_rxon.filter_flags &= ~RXON_FILTER_ASSOC_MSK;
7646 iwl_commit_rxon(priv);
7647
7648 if (priv->interface_id == conf->if_id) {
7649 priv->interface_id = 0;
7650 memset(priv->bssid, 0, ETH_ALEN);
7651 memset(priv->essid, 0, IW_ESSID_MAX_SIZE);
7652 priv->essid_len = 0;
7653 }
7654 mutex_unlock(&priv->mutex);
7655
7656 IWL_DEBUG_MAC80211("leave\n");
7657
7658 }
7659
7660 #define IWL_DELAY_NEXT_SCAN (HZ*2)
7661 static int iwl_mac_hw_scan(struct ieee80211_hw *hw, u8 *ssid, size_t len)
7662 {
7663 int rc = 0;
7664 unsigned long flags;
7665 struct iwl_priv *priv = hw->priv;
7666
7667 IWL_DEBUG_MAC80211("enter\n");
7668
7669 mutex_lock(&priv->mutex);
7670 spin_lock_irqsave(&priv->lock, flags);
7671
7672 if (!iwl_is_ready_rf(priv)) {
7673 rc = -EIO;
7674 IWL_DEBUG_MAC80211("leave - not ready or exit pending\n");
7675 goto out_unlock;
7676 }
7677
7678 if (priv->iw_mode == IEEE80211_IF_TYPE_AP) { /* APs don't scan */
7679 rc = -EIO;
7680 IWL_ERROR("ERROR: APs don't scan\n");
7681 goto out_unlock;
7682 }
7683
7684 /* if we just finished scan ask for delay */
7685 if (priv->last_scan_jiffies &&
7686 time_after(priv->last_scan_jiffies + IWL_DELAY_NEXT_SCAN,
7687 jiffies)) {
7688 rc = -EAGAIN;
7689 goto out_unlock;
7690 }
7691 if (len) {
7692 IWL_DEBUG_SCAN("direct scan for "
7693 "%s [%d]\n ",
7694 iwl_escape_essid(ssid, len), (int)len);
7695
7696 priv->one_direct_scan = 1;
7697 priv->direct_ssid_len = (u8)
7698 min((u8) len, (u8) IW_ESSID_MAX_SIZE);
7699 memcpy(priv->direct_ssid, ssid, priv->direct_ssid_len);
7700 } else
7701 priv->one_direct_scan = 0;
7702
7703 rc = iwl_scan_initiate(priv);
7704
7705 IWL_DEBUG_MAC80211("leave\n");
7706
7707 out_unlock:
7708 spin_unlock_irqrestore(&priv->lock, flags);
7709 mutex_unlock(&priv->mutex);
7710
7711 return rc;
7712 }
7713
7714 static int iwl_mac_set_key(struct ieee80211_hw *hw, enum set_key_cmd cmd,
7715 const u8 *local_addr, const u8 *addr,
7716 struct ieee80211_key_conf *key)
7717 {
7718 struct iwl_priv *priv = hw->priv;
7719 DECLARE_MAC_BUF(mac);
7720 int rc = 0;
7721 u8 sta_id;
7722
7723 IWL_DEBUG_MAC80211("enter\n");
7724
7725 if (!iwl_param_hwcrypto) {
7726 IWL_DEBUG_MAC80211("leave - hwcrypto disabled\n");
7727 return -EOPNOTSUPP;
7728 }
7729
7730 if (is_zero_ether_addr(addr))
7731 /* only support pairwise keys */
7732 return -EOPNOTSUPP;
7733
7734 sta_id = iwl_hw_find_station(priv, addr);
7735 if (sta_id == IWL_INVALID_STATION) {
7736 IWL_DEBUG_MAC80211("leave - %s not in station map.\n",
7737 print_mac(mac, addr));
7738 return -EINVAL;
7739 }
7740
7741 mutex_lock(&priv->mutex);
7742
7743 iwl_scan_cancel_timeout(priv, 100);
7744
7745 switch (cmd) {
7746 case SET_KEY:
7747 rc = iwl_update_sta_key_info(priv, key, sta_id);
7748 if (!rc) {
7749 iwl_set_rxon_hwcrypto(priv, 1);
7750 iwl_commit_rxon(priv);
7751 key->hw_key_idx = sta_id;
7752 IWL_DEBUG_MAC80211("set_key success, using hwcrypto\n");
7753 key->flags |= IEEE80211_KEY_FLAG_GENERATE_IV;
7754 }
7755 break;
7756 case DISABLE_KEY:
7757 rc = iwl_clear_sta_key_info(priv, sta_id);
7758 if (!rc) {
7759 iwl_set_rxon_hwcrypto(priv, 0);
7760 iwl_commit_rxon(priv);
7761 IWL_DEBUG_MAC80211("disable hwcrypto key\n");
7762 }
7763 break;
7764 default:
7765 rc = -EINVAL;
7766 }
7767
7768 IWL_DEBUG_MAC80211("leave\n");
7769 mutex_unlock(&priv->mutex);
7770
7771 return rc;
7772 }
7773
7774 static int iwl_mac_conf_tx(struct ieee80211_hw *hw, int queue,
7775 const struct ieee80211_tx_queue_params *params)
7776 {
7777 struct iwl_priv *priv = hw->priv;
7778 #ifdef CONFIG_IWLWIFI_QOS
7779 unsigned long flags;
7780 int q;
7781 #endif /* CONFIG_IWL_QOS */
7782
7783 IWL_DEBUG_MAC80211("enter\n");
7784
7785 if (!iwl_is_ready_rf(priv)) {
7786 IWL_DEBUG_MAC80211("leave - RF not ready\n");
7787 return -EIO;
7788 }
7789
7790 if (queue >= AC_NUM) {
7791 IWL_DEBUG_MAC80211("leave - queue >= AC_NUM %d\n", queue);
7792 return 0;
7793 }
7794
7795 #ifdef CONFIG_IWLWIFI_QOS
7796 if (!priv->qos_data.qos_enable) {
7797 priv->qos_data.qos_active = 0;
7798 IWL_DEBUG_MAC80211("leave - qos not enabled\n");
7799 return 0;
7800 }
7801 q = AC_NUM - 1 - queue;
7802
7803 spin_lock_irqsave(&priv->lock, flags);
7804
7805 priv->qos_data.def_qos_parm.ac[q].cw_min = cpu_to_le16(params->cw_min);
7806 priv->qos_data.def_qos_parm.ac[q].cw_max = cpu_to_le16(params->cw_max);
7807 priv->qos_data.def_qos_parm.ac[q].aifsn = params->aifs;
7808 priv->qos_data.def_qos_parm.ac[q].edca_txop =
7809 cpu_to_le16((params->burst_time * 100));
7810
7811 priv->qos_data.def_qos_parm.ac[q].reserved1 = 0;
7812 priv->qos_data.qos_active = 1;
7813
7814 spin_unlock_irqrestore(&priv->lock, flags);
7815
7816 mutex_lock(&priv->mutex);
7817 if (priv->iw_mode == IEEE80211_IF_TYPE_AP)
7818 iwl_activate_qos(priv, 1);
7819 else if (priv->assoc_id && iwl_is_associated(priv))
7820 iwl_activate_qos(priv, 0);
7821
7822 mutex_unlock(&priv->mutex);
7823
7824 #endif /*CONFIG_IWLWIFI_QOS */
7825
7826 IWL_DEBUG_MAC80211("leave\n");
7827 return 0;
7828 }
7829
7830 static int iwl_mac_get_tx_stats(struct ieee80211_hw *hw,
7831 struct ieee80211_tx_queue_stats *stats)
7832 {
7833 struct iwl_priv *priv = hw->priv;
7834 int i, avail;
7835 struct iwl_tx_queue *txq;
7836 struct iwl_queue *q;
7837 unsigned long flags;
7838
7839 IWL_DEBUG_MAC80211("enter\n");
7840
7841 if (!iwl_is_ready_rf(priv)) {
7842 IWL_DEBUG_MAC80211("leave - RF not ready\n");
7843 return -EIO;
7844 }
7845
7846 spin_lock_irqsave(&priv->lock, flags);
7847
7848 for (i = 0; i < AC_NUM; i++) {
7849 txq = &priv->txq[i];
7850 q = &txq->q;
7851 avail = iwl_queue_space(q);
7852
7853 stats->data[i].len = q->n_window - avail;
7854 stats->data[i].limit = q->n_window - q->high_mark;
7855 stats->data[i].count = q->n_window;
7856
7857 }
7858 spin_unlock_irqrestore(&priv->lock, flags);
7859
7860 IWL_DEBUG_MAC80211("leave\n");
7861
7862 return 0;
7863 }
7864
7865 static int iwl_mac_get_stats(struct ieee80211_hw *hw,
7866 struct ieee80211_low_level_stats *stats)
7867 {
7868 IWL_DEBUG_MAC80211("enter\n");
7869 IWL_DEBUG_MAC80211("leave\n");
7870
7871 return 0;
7872 }
7873
7874 static u64 iwl_mac_get_tsf(struct ieee80211_hw *hw)
7875 {
7876 IWL_DEBUG_MAC80211("enter\n");
7877 IWL_DEBUG_MAC80211("leave\n");
7878
7879 return 0;
7880 }
7881
7882 static void iwl_mac_reset_tsf(struct ieee80211_hw *hw)
7883 {
7884 struct iwl_priv *priv = hw->priv;
7885 unsigned long flags;
7886
7887 mutex_lock(&priv->mutex);
7888 IWL_DEBUG_MAC80211("enter\n");
7889
7890 priv->lq_mngr.lq_ready = 0;
7891 #ifdef CONFIG_IWLWIFI_HT
7892 spin_lock_irqsave(&priv->lock, flags);
7893 memset(&priv->current_assoc_ht, 0, sizeof(struct sta_ht_info));
7894 spin_unlock_irqrestore(&priv->lock, flags);
7895 #ifdef CONFIG_IWLWIFI_HT_AGG
7896 /* if (priv->lq_mngr.agg_ctrl.granted_ba)
7897 iwl4965_turn_off_agg(priv, TID_ALL_SPECIFIED);*/
7898
7899 memset(&(priv->lq_mngr.agg_ctrl), 0, sizeof(struct iwl_agg_control));
7900 priv->lq_mngr.agg_ctrl.tid_traffic_load_threshold = 10;
7901 priv->lq_mngr.agg_ctrl.ba_timeout = 5000;
7902 priv->lq_mngr.agg_ctrl.auto_agg = 1;
7903
7904 if (priv->lq_mngr.agg_ctrl.auto_agg)
7905 priv->lq_mngr.agg_ctrl.requested_ba = TID_ALL_ENABLED;
7906 #endif /*CONFIG_IWLWIFI_HT_AGG */
7907 #endif /* CONFIG_IWLWIFI_HT */
7908
7909 #ifdef CONFIG_IWLWIFI_QOS
7910 iwl_reset_qos(priv);
7911 #endif
7912
7913 cancel_delayed_work(&priv->post_associate);
7914
7915 spin_lock_irqsave(&priv->lock, flags);
7916 priv->assoc_id = 0;
7917 priv->assoc_capability = 0;
7918 priv->call_post_assoc_from_beacon = 0;
7919 priv->assoc_station_added = 0;
7920
7921 /* new association get rid of ibss beacon skb */
7922 if (priv->ibss_beacon)
7923 dev_kfree_skb(priv->ibss_beacon);
7924
7925 priv->ibss_beacon = NULL;
7926
7927 priv->beacon_int = priv->hw->conf.beacon_int;
7928 priv->timestamp1 = 0;
7929 priv->timestamp0 = 0;
7930 if ((priv->iw_mode == IEEE80211_IF_TYPE_STA))
7931 priv->beacon_int = 0;
7932
7933 spin_unlock_irqrestore(&priv->lock, flags);
7934
7935 /* we are restarting association process
7936 * clear RXON_FILTER_ASSOC_MSK bit
7937 */
7938 if (priv->iw_mode != IEEE80211_IF_TYPE_AP) {
7939 iwl_scan_cancel_timeout(priv, 100);
7940 priv->staging_rxon.filter_flags &= ~RXON_FILTER_ASSOC_MSK;
7941 iwl_commit_rxon(priv);
7942 }
7943
7944 /* Per mac80211.h: This is only used in IBSS mode... */
7945 if (priv->iw_mode != IEEE80211_IF_TYPE_IBSS) {
7946
7947 IWL_DEBUG_MAC80211("leave - not in IBSS\n");
7948 mutex_unlock(&priv->mutex);
7949 return;
7950 }
7951
7952 if (!iwl_is_ready_rf(priv)) {
7953 IWL_DEBUG_MAC80211("leave - not ready\n");
7954 mutex_unlock(&priv->mutex);
7955 return;
7956 }
7957
7958 priv->only_active_channel = 0;
7959
7960 iwl_set_rate(priv);
7961
7962 mutex_unlock(&priv->mutex);
7963
7964 IWL_DEBUG_MAC80211("leave\n");
7965
7966 }
7967
7968 static int iwl_mac_beacon_update(struct ieee80211_hw *hw, struct sk_buff *skb,
7969 struct ieee80211_tx_control *control)
7970 {
7971 struct iwl_priv *priv = hw->priv;
7972 unsigned long flags;
7973
7974 mutex_lock(&priv->mutex);
7975 IWL_DEBUG_MAC80211("enter\n");
7976
7977 if (!iwl_is_ready_rf(priv)) {
7978 IWL_DEBUG_MAC80211("leave - RF not ready\n");
7979 mutex_unlock(&priv->mutex);
7980 return -EIO;
7981 }
7982
7983 if (priv->iw_mode != IEEE80211_IF_TYPE_IBSS) {
7984 IWL_DEBUG_MAC80211("leave - not IBSS\n");
7985 mutex_unlock(&priv->mutex);
7986 return -EIO;
7987 }
7988
7989 spin_lock_irqsave(&priv->lock, flags);
7990
7991 if (priv->ibss_beacon)
7992 dev_kfree_skb(priv->ibss_beacon);
7993
7994 priv->ibss_beacon = skb;
7995
7996 priv->assoc_id = 0;
7997
7998 IWL_DEBUG_MAC80211("leave\n");
7999 spin_unlock_irqrestore(&priv->lock, flags);
8000
8001 #ifdef CONFIG_IWLWIFI_QOS
8002 iwl_reset_qos(priv);
8003 #endif
8004
8005 queue_work(priv->workqueue, &priv->post_associate.work);
8006
8007 mutex_unlock(&priv->mutex);
8008
8009 return 0;
8010 }
8011
8012 #ifdef CONFIG_IWLWIFI_HT
8013 union ht_cap_info {
8014 struct {
8015 u16 advanced_coding_cap :1;
8016 u16 supported_chan_width_set :1;
8017 u16 mimo_power_save_mode :2;
8018 u16 green_field :1;
8019 u16 short_GI20 :1;
8020 u16 short_GI40 :1;
8021 u16 tx_stbc :1;
8022 u16 rx_stbc :1;
8023 u16 beam_forming :1;
8024 u16 delayed_ba :1;
8025 u16 maximal_amsdu_size :1;
8026 u16 cck_mode_at_40MHz :1;
8027 u16 psmp_support :1;
8028 u16 stbc_ctrl_frame_support :1;
8029 u16 sig_txop_protection_support :1;
8030 };
8031 u16 val;
8032 } __attribute__ ((packed));
8033
8034 union ht_param_info{
8035 struct {
8036 u8 max_rx_ampdu_factor :2;
8037 u8 mpdu_density :3;
8038 u8 reserved :3;
8039 };
8040 u8 val;
8041 } __attribute__ ((packed));
8042
8043 union ht_exra_param_info {
8044 struct {
8045 u8 ext_chan_offset :2;
8046 u8 tx_chan_width :1;
8047 u8 rifs_mode :1;
8048 u8 controlled_access_only :1;
8049 u8 service_interval_granularity :3;
8050 };
8051 u8 val;
8052 } __attribute__ ((packed));
8053
8054 union ht_operation_mode{
8055 struct {
8056 u16 op_mode :2;
8057 u16 non_GF :1;
8058 u16 reserved :13;
8059 };
8060 u16 val;
8061 } __attribute__ ((packed));
8062
8063
8064 static int sta_ht_info_init(struct ieee80211_ht_capability *ht_cap,
8065 struct ieee80211_ht_additional_info *ht_extra,
8066 struct sta_ht_info *ht_info_ap,
8067 struct sta_ht_info *ht_info)
8068 {
8069 union ht_cap_info cap;
8070 union ht_operation_mode op_mode;
8071 union ht_param_info param_info;
8072 union ht_exra_param_info extra_param_info;
8073
8074 IWL_DEBUG_MAC80211("enter: \n");
8075
8076 if (!ht_info) {
8077 IWL_DEBUG_MAC80211("leave: ht_info is NULL\n");
8078 return -1;
8079 }
8080
8081 if (ht_cap) {
8082 cap.val = (u16) le16_to_cpu(ht_cap->capabilities_info);
8083 param_info.val = ht_cap->mac_ht_params_info;
8084 ht_info->is_ht = 1;
8085 if (cap.short_GI20)
8086 ht_info->sgf |= 0x1;
8087 if (cap.short_GI40)
8088 ht_info->sgf |= 0x2;
8089 ht_info->is_green_field = cap.green_field;
8090 ht_info->max_amsdu_size = cap.maximal_amsdu_size;
8091 ht_info->supported_chan_width = cap.supported_chan_width_set;
8092 ht_info->tx_mimo_ps_mode = cap.mimo_power_save_mode;
8093 memcpy(ht_info->supp_rates, ht_cap->supported_mcs_set, 16);
8094
8095 ht_info->ampdu_factor = param_info.max_rx_ampdu_factor;
8096 ht_info->mpdu_density = param_info.mpdu_density;
8097
8098 IWL_DEBUG_MAC80211("SISO mask 0x%X MIMO mask 0x%X \n",
8099 ht_cap->supported_mcs_set[0],
8100 ht_cap->supported_mcs_set[1]);
8101
8102 if (ht_info_ap) {
8103 ht_info->control_channel = ht_info_ap->control_channel;
8104 ht_info->extension_chan_offset =
8105 ht_info_ap->extension_chan_offset;
8106 ht_info->tx_chan_width = ht_info_ap->tx_chan_width;
8107 ht_info->operating_mode = ht_info_ap->operating_mode;
8108 }
8109
8110 if (ht_extra) {
8111 extra_param_info.val = ht_extra->ht_param;
8112 ht_info->control_channel = ht_extra->control_chan;
8113 ht_info->extension_chan_offset =
8114 extra_param_info.ext_chan_offset;
8115 ht_info->tx_chan_width = extra_param_info.tx_chan_width;
8116 op_mode.val = (u16)
8117 le16_to_cpu(ht_extra->operation_mode);
8118 ht_info->operating_mode = op_mode.op_mode;
8119 IWL_DEBUG_MAC80211("control channel %d\n",
8120 ht_extra->control_chan);
8121 }
8122 } else
8123 ht_info->is_ht = 0;
8124
8125 IWL_DEBUG_MAC80211("leave\n");
8126 return 0;
8127 }
8128
8129 static int iwl_mac_conf_ht(struct ieee80211_hw *hw,
8130 struct ieee80211_ht_capability *ht_cap,
8131 struct ieee80211_ht_additional_info *ht_extra)
8132 {
8133 struct iwl_priv *priv = hw->priv;
8134 int rs;
8135
8136 IWL_DEBUG_MAC80211("enter: \n");
8137
8138 rs = sta_ht_info_init(ht_cap, ht_extra, NULL, &priv->current_assoc_ht);
8139 iwl4965_set_rxon_chain(priv);
8140
8141 if (priv && priv->assoc_id &&
8142 (priv->iw_mode == IEEE80211_IF_TYPE_STA)) {
8143 unsigned long flags;
8144
8145 spin_lock_irqsave(&priv->lock, flags);
8146 if (priv->beacon_int)
8147 queue_work(priv->workqueue, &priv->post_associate.work);
8148 else
8149 priv->call_post_assoc_from_beacon = 1;
8150 spin_unlock_irqrestore(&priv->lock, flags);
8151 }
8152
8153 IWL_DEBUG_MAC80211("leave: control channel %d\n",
8154 ht_extra->control_chan);
8155 return rs;
8156
8157 }
8158
8159 static void iwl_set_ht_capab(struct ieee80211_hw *hw,
8160 struct ieee80211_ht_capability *ht_cap,
8161 u8 use_wide_chan)
8162 {
8163 union ht_cap_info cap;
8164 union ht_param_info param_info;
8165
8166 memset(&cap, 0, sizeof(union ht_cap_info));
8167 memset(&param_info, 0, sizeof(union ht_param_info));
8168
8169 cap.maximal_amsdu_size = HT_IE_MAX_AMSDU_SIZE_4K;
8170 cap.green_field = 1;
8171 cap.short_GI20 = 1;
8172 cap.short_GI40 = 1;
8173 cap.supported_chan_width_set = use_wide_chan;
8174 cap.mimo_power_save_mode = 0x3;
8175
8176 param_info.max_rx_ampdu_factor = CFG_HT_RX_AMPDU_FACTOR_DEF;
8177 param_info.mpdu_density = CFG_HT_MPDU_DENSITY_DEF;
8178 ht_cap->capabilities_info = (__le16) cpu_to_le16(cap.val);
8179 ht_cap->mac_ht_params_info = (u8) param_info.val;
8180
8181 ht_cap->supported_mcs_set[0] = 0xff;
8182 ht_cap->supported_mcs_set[1] = 0xff;
8183 ht_cap->supported_mcs_set[4] =
8184 (cap.supported_chan_width_set) ? 0x1: 0x0;
8185 }
8186
8187 static void iwl_mac_get_ht_capab(struct ieee80211_hw *hw,
8188 struct ieee80211_ht_capability *ht_cap)
8189 {
8190 u8 use_wide_channel = 1;
8191 struct iwl_priv *priv = hw->priv;
8192
8193 IWL_DEBUG_MAC80211("enter: \n");
8194 if (priv->channel_width != IWL_CHANNEL_WIDTH_40MHZ)
8195 use_wide_channel = 0;
8196
8197 /* no fat tx allowed on 2.4GHZ */
8198 if (priv->phymode != MODE_IEEE80211A)
8199 use_wide_channel = 0;
8200
8201 iwl_set_ht_capab(hw, ht_cap, use_wide_channel);
8202 IWL_DEBUG_MAC80211("leave: \n");
8203 }
8204 #endif /*CONFIG_IWLWIFI_HT*/
8205
8206 /*****************************************************************************
8207 *
8208 * sysfs attributes
8209 *
8210 *****************************************************************************/
8211
8212 #ifdef CONFIG_IWLWIFI_DEBUG
8213
8214 /*
8215 * The following adds a new attribute to the sysfs representation
8216 * of this device driver (i.e. a new file in /sys/bus/pci/drivers/iwl/)
8217 * used for controlling the debug level.
8218 *
8219 * See the level definitions in iwl for details.
8220 */
8221
8222 static ssize_t show_debug_level(struct device_driver *d, char *buf)
8223 {
8224 return sprintf(buf, "0x%08X\n", iwl_debug_level);
8225 }
8226 static ssize_t store_debug_level(struct device_driver *d,
8227 const char *buf, size_t count)
8228 {
8229 char *p = (char *)buf;
8230 u32 val;
8231
8232 val = simple_strtoul(p, &p, 0);
8233 if (p == buf)
8234 printk(KERN_INFO DRV_NAME
8235 ": %s is not in hex or decimal form.\n", buf);
8236 else
8237 iwl_debug_level = val;
8238
8239 return strnlen(buf, count);
8240 }
8241
8242 static DRIVER_ATTR(debug_level, S_IWUSR | S_IRUGO,
8243 show_debug_level, store_debug_level);
8244
8245 #endif /* CONFIG_IWLWIFI_DEBUG */
8246
8247 static ssize_t show_rf_kill(struct device *d,
8248 struct device_attribute *attr, char *buf)
8249 {
8250 /*
8251 * 0 - RF kill not enabled
8252 * 1 - SW based RF kill active (sysfs)
8253 * 2 - HW based RF kill active
8254 * 3 - Both HW and SW based RF kill active
8255 */
8256 struct iwl_priv *priv = (struct iwl_priv *)d->driver_data;
8257 int val = (test_bit(STATUS_RF_KILL_SW, &priv->status) ? 0x1 : 0x0) |
8258 (test_bit(STATUS_RF_KILL_HW, &priv->status) ? 0x2 : 0x0);
8259
8260 return sprintf(buf, "%i\n", val);
8261 }
8262
8263 static ssize_t store_rf_kill(struct device *d,
8264 struct device_attribute *attr,
8265 const char *buf, size_t count)
8266 {
8267 struct iwl_priv *priv = (struct iwl_priv *)d->driver_data;
8268
8269 mutex_lock(&priv->mutex);
8270 iwl_radio_kill_sw(priv, buf[0] == '1');
8271 mutex_unlock(&priv->mutex);
8272
8273 return count;
8274 }
8275
8276 static DEVICE_ATTR(rf_kill, S_IWUSR | S_IRUGO, show_rf_kill, store_rf_kill);
8277
8278 static ssize_t show_temperature(struct device *d,
8279 struct device_attribute *attr, char *buf)
8280 {
8281 struct iwl_priv *priv = (struct iwl_priv *)d->driver_data;
8282
8283 if (!iwl_is_alive(priv))
8284 return -EAGAIN;
8285
8286 return sprintf(buf, "%d\n", iwl_hw_get_temperature(priv));
8287 }
8288
8289 static DEVICE_ATTR(temperature, S_IRUGO, show_temperature, NULL);
8290
8291 static ssize_t show_rs_window(struct device *d,
8292 struct device_attribute *attr,
8293 char *buf)
8294 {
8295 struct iwl_priv *priv = d->driver_data;
8296 return iwl_fill_rs_info(priv->hw, buf, IWL_AP_ID);
8297 }
8298 static DEVICE_ATTR(rs_window, S_IRUGO, show_rs_window, NULL);
8299
8300 static ssize_t show_tx_power(struct device *d,
8301 struct device_attribute *attr, char *buf)
8302 {
8303 struct iwl_priv *priv = (struct iwl_priv *)d->driver_data;
8304 return sprintf(buf, "%d\n", priv->user_txpower_limit);
8305 }
8306
8307 static ssize_t store_tx_power(struct device *d,
8308 struct device_attribute *attr,
8309 const char *buf, size_t count)
8310 {
8311 struct iwl_priv *priv = (struct iwl_priv *)d->driver_data;
8312 char *p = (char *)buf;
8313 u32 val;
8314
8315 val = simple_strtoul(p, &p, 10);
8316 if (p == buf)
8317 printk(KERN_INFO DRV_NAME
8318 ": %s is not in decimal form.\n", buf);
8319 else
8320 iwl_hw_reg_set_txpower(priv, val);
8321
8322 return count;
8323 }
8324
8325 static DEVICE_ATTR(tx_power, S_IWUSR | S_IRUGO, show_tx_power, store_tx_power);
8326
8327 static ssize_t show_flags(struct device *d,
8328 struct device_attribute *attr, char *buf)
8329 {
8330 struct iwl_priv *priv = (struct iwl_priv *)d->driver_data;
8331
8332 return sprintf(buf, "0x%04X\n", priv->active_rxon.flags);
8333 }
8334
8335 static ssize_t store_flags(struct device *d,
8336 struct device_attribute *attr,
8337 const char *buf, size_t count)
8338 {
8339 struct iwl_priv *priv = (struct iwl_priv *)d->driver_data;
8340 u32 flags = simple_strtoul(buf, NULL, 0);
8341
8342 mutex_lock(&priv->mutex);
8343 if (le32_to_cpu(priv->staging_rxon.flags) != flags) {
8344 /* Cancel any currently running scans... */
8345 if (iwl_scan_cancel_timeout(priv, 100))
8346 IWL_WARNING("Could not cancel scan.\n");
8347 else {
8348 IWL_DEBUG_INFO("Committing rxon.flags = 0x%04X\n",
8349 flags);
8350 priv->staging_rxon.flags = cpu_to_le32(flags);
8351 iwl_commit_rxon(priv);
8352 }
8353 }
8354 mutex_unlock(&priv->mutex);
8355
8356 return count;
8357 }
8358
8359 static DEVICE_ATTR(flags, S_IWUSR | S_IRUGO, show_flags, store_flags);
8360
8361 static ssize_t show_filter_flags(struct device *d,
8362 struct device_attribute *attr, char *buf)
8363 {
8364 struct iwl_priv *priv = (struct iwl_priv *)d->driver_data;
8365
8366 return sprintf(buf, "0x%04X\n",
8367 le32_to_cpu(priv->active_rxon.filter_flags));
8368 }
8369
8370 static ssize_t store_filter_flags(struct device *d,
8371 struct device_attribute *attr,
8372 const char *buf, size_t count)
8373 {
8374 struct iwl_priv *priv = (struct iwl_priv *)d->driver_data;
8375 u32 filter_flags = simple_strtoul(buf, NULL, 0);
8376
8377 mutex_lock(&priv->mutex);
8378 if (le32_to_cpu(priv->staging_rxon.filter_flags) != filter_flags) {
8379 /* Cancel any currently running scans... */
8380 if (iwl_scan_cancel_timeout(priv, 100))
8381 IWL_WARNING("Could not cancel scan.\n");
8382 else {
8383 IWL_DEBUG_INFO("Committing rxon.filter_flags = "
8384 "0x%04X\n", filter_flags);
8385 priv->staging_rxon.filter_flags =
8386 cpu_to_le32(filter_flags);
8387 iwl_commit_rxon(priv);
8388 }
8389 }
8390 mutex_unlock(&priv->mutex);
8391
8392 return count;
8393 }
8394
8395 static DEVICE_ATTR(filter_flags, S_IWUSR | S_IRUGO, show_filter_flags,
8396 store_filter_flags);
8397
8398 static ssize_t show_tune(struct device *d,
8399 struct device_attribute *attr, char *buf)
8400 {
8401 struct iwl_priv *priv = (struct iwl_priv *)d->driver_data;
8402
8403 return sprintf(buf, "0x%04X\n",
8404 (priv->phymode << 8) |
8405 le16_to_cpu(priv->active_rxon.channel));
8406 }
8407
8408 static void iwl_set_flags_for_phymode(struct iwl_priv *priv, u8 phymode);
8409
8410 static ssize_t store_tune(struct device *d,
8411 struct device_attribute *attr,
8412 const char *buf, size_t count)
8413 {
8414 struct iwl_priv *priv = (struct iwl_priv *)d->driver_data;
8415 char *p = (char *)buf;
8416 u16 tune = simple_strtoul(p, &p, 0);
8417 u8 phymode = (tune >> 8) & 0xff;
8418 u16 channel = tune & 0xff;
8419
8420 IWL_DEBUG_INFO("Tune request to:%d channel:%d\n", phymode, channel);
8421
8422 mutex_lock(&priv->mutex);
8423 if ((le16_to_cpu(priv->staging_rxon.channel) != channel) ||
8424 (priv->phymode != phymode)) {
8425 const struct iwl_channel_info *ch_info;
8426
8427 ch_info = iwl_get_channel_info(priv, phymode, channel);
8428 if (!ch_info) {
8429 IWL_WARNING("Requested invalid phymode/channel "
8430 "combination: %d %d\n", phymode, channel);
8431 mutex_unlock(&priv->mutex);
8432 return -EINVAL;
8433 }
8434
8435 /* Cancel any currently running scans... */
8436 if (iwl_scan_cancel_timeout(priv, 100))
8437 IWL_WARNING("Could not cancel scan.\n");
8438 else {
8439 IWL_DEBUG_INFO("Committing phymode and "
8440 "rxon.channel = %d %d\n",
8441 phymode, channel);
8442
8443 iwl_set_rxon_channel(priv, phymode, channel);
8444 iwl_set_flags_for_phymode(priv, phymode);
8445
8446 iwl_set_rate(priv);
8447 iwl_commit_rxon(priv);
8448 }
8449 }
8450 mutex_unlock(&priv->mutex);
8451
8452 return count;
8453 }
8454
8455 static DEVICE_ATTR(tune, S_IWUSR | S_IRUGO, show_tune, store_tune);
8456
8457 #ifdef CONFIG_IWLWIFI_SPECTRUM_MEASUREMENT
8458
8459 static ssize_t show_measurement(struct device *d,
8460 struct device_attribute *attr, char *buf)
8461 {
8462 struct iwl_priv *priv = dev_get_drvdata(d);
8463 struct iwl_spectrum_notification measure_report;
8464 u32 size = sizeof(measure_report), len = 0, ofs = 0;
8465 u8 *data = (u8 *) & measure_report;
8466 unsigned long flags;
8467
8468 spin_lock_irqsave(&priv->lock, flags);
8469 if (!(priv->measurement_status & MEASUREMENT_READY)) {
8470 spin_unlock_irqrestore(&priv->lock, flags);
8471 return 0;
8472 }
8473 memcpy(&measure_report, &priv->measure_report, size);
8474 priv->measurement_status = 0;
8475 spin_unlock_irqrestore(&priv->lock, flags);
8476
8477 while (size && (PAGE_SIZE - len)) {
8478 hex_dump_to_buffer(data + ofs, size, 16, 1, buf + len,
8479 PAGE_SIZE - len, 1);
8480 len = strlen(buf);
8481 if (PAGE_SIZE - len)
8482 buf[len++] = '\n';
8483
8484 ofs += 16;
8485 size -= min(size, 16U);
8486 }
8487
8488 return len;
8489 }
8490
8491 static ssize_t store_measurement(struct device *d,
8492 struct device_attribute *attr,
8493 const char *buf, size_t count)
8494 {
8495 struct iwl_priv *priv = dev_get_drvdata(d);
8496 struct ieee80211_measurement_params params = {
8497 .channel = le16_to_cpu(priv->active_rxon.channel),
8498 .start_time = cpu_to_le64(priv->last_tsf),
8499 .duration = cpu_to_le16(1),
8500 };
8501 u8 type = IWL_MEASURE_BASIC;
8502 u8 buffer[32];
8503 u8 channel;
8504
8505 if (count) {
8506 char *p = buffer;
8507 strncpy(buffer, buf, min(sizeof(buffer), count));
8508 channel = simple_strtoul(p, NULL, 0);
8509 if (channel)
8510 params.channel = channel;
8511
8512 p = buffer;
8513 while (*p && *p != ' ')
8514 p++;
8515 if (*p)
8516 type = simple_strtoul(p + 1, NULL, 0);
8517 }
8518
8519 IWL_DEBUG_INFO("Invoking measurement of type %d on "
8520 "channel %d (for '%s')\n", type, params.channel, buf);
8521 iwl_get_measurement(priv, &params, type);
8522
8523 return count;
8524 }
8525
8526 static DEVICE_ATTR(measurement, S_IRUSR | S_IWUSR,
8527 show_measurement, store_measurement);
8528 #endif /* CONFIG_IWLWIFI_SPECTRUM_MEASUREMENT */
8529
8530 static ssize_t store_retry_rate(struct device *d,
8531 struct device_attribute *attr,
8532 const char *buf, size_t count)
8533 {
8534 struct iwl_priv *priv = dev_get_drvdata(d);
8535
8536 priv->retry_rate = simple_strtoul(buf, NULL, 0);
8537 if (priv->retry_rate <= 0)
8538 priv->retry_rate = 1;
8539
8540 return count;
8541 }
8542
8543 static ssize_t show_retry_rate(struct device *d,
8544 struct device_attribute *attr, char *buf)
8545 {
8546 struct iwl_priv *priv = dev_get_drvdata(d);
8547 return sprintf(buf, "%d", priv->retry_rate);
8548 }
8549
8550 static DEVICE_ATTR(retry_rate, S_IWUSR | S_IRUSR, show_retry_rate,
8551 store_retry_rate);
8552
8553 static ssize_t store_power_level(struct device *d,
8554 struct device_attribute *attr,
8555 const char *buf, size_t count)
8556 {
8557 struct iwl_priv *priv = dev_get_drvdata(d);
8558 int rc;
8559 int mode;
8560
8561 mode = simple_strtoul(buf, NULL, 0);
8562 mutex_lock(&priv->mutex);
8563
8564 if (!iwl_is_ready(priv)) {
8565 rc = -EAGAIN;
8566 goto out;
8567 }
8568
8569 if ((mode < 1) || (mode > IWL_POWER_LIMIT) || (mode == IWL_POWER_AC))
8570 mode = IWL_POWER_AC;
8571 else
8572 mode |= IWL_POWER_ENABLED;
8573
8574 if (mode != priv->power_mode) {
8575 rc = iwl_send_power_mode(priv, IWL_POWER_LEVEL(mode));
8576 if (rc) {
8577 IWL_DEBUG_MAC80211("failed setting power mode.\n");
8578 goto out;
8579 }
8580 priv->power_mode = mode;
8581 }
8582
8583 rc = count;
8584
8585 out:
8586 mutex_unlock(&priv->mutex);
8587 return rc;
8588 }
8589
8590 #define MAX_WX_STRING 80
8591
8592 /* Values are in microsecond */
8593 static const s32 timeout_duration[] = {
8594 350000,
8595 250000,
8596 75000,
8597 37000,
8598 25000,
8599 };
8600 static const s32 period_duration[] = {
8601 400000,
8602 700000,
8603 1000000,
8604 1000000,
8605 1000000
8606 };
8607
8608 static ssize_t show_power_level(struct device *d,
8609 struct device_attribute *attr, char *buf)
8610 {
8611 struct iwl_priv *priv = dev_get_drvdata(d);
8612 int level = IWL_POWER_LEVEL(priv->power_mode);
8613 char *p = buf;
8614
8615 p += sprintf(p, "%d ", level);
8616 switch (level) {
8617 case IWL_POWER_MODE_CAM:
8618 case IWL_POWER_AC:
8619 p += sprintf(p, "(AC)");
8620 break;
8621 case IWL_POWER_BATTERY:
8622 p += sprintf(p, "(BATTERY)");
8623 break;
8624 default:
8625 p += sprintf(p,
8626 "(Timeout %dms, Period %dms)",
8627 timeout_duration[level - 1] / 1000,
8628 period_duration[level - 1] / 1000);
8629 }
8630
8631 if (!(priv->power_mode & IWL_POWER_ENABLED))
8632 p += sprintf(p, " OFF\n");
8633 else
8634 p += sprintf(p, " \n");
8635
8636 return (p - buf + 1);
8637
8638 }
8639
8640 static DEVICE_ATTR(power_level, S_IWUSR | S_IRUSR, show_power_level,
8641 store_power_level);
8642
8643 static ssize_t show_channels(struct device *d,
8644 struct device_attribute *attr, char *buf)
8645 {
8646 struct iwl_priv *priv = dev_get_drvdata(d);
8647 int len = 0, i;
8648 struct ieee80211_channel *channels = NULL;
8649 const struct ieee80211_hw_mode *hw_mode = NULL;
8650 int count = 0;
8651
8652 if (!iwl_is_ready(priv))
8653 return -EAGAIN;
8654
8655 hw_mode = iwl_get_hw_mode(priv, MODE_IEEE80211G);
8656 if (!hw_mode)
8657 hw_mode = iwl_get_hw_mode(priv, MODE_IEEE80211B);
8658 if (hw_mode) {
8659 channels = hw_mode->channels;
8660 count = hw_mode->num_channels;
8661 }
8662
8663 len +=
8664 sprintf(&buf[len],
8665 "Displaying %d channels in 2.4GHz band "
8666 "(802.11bg):\n", count);
8667
8668 for (i = 0; i < count; i++)
8669 len += sprintf(&buf[len], "%d: %ddBm: BSS%s%s, %s.\n",
8670 channels[i].chan,
8671 channels[i].power_level,
8672 channels[i].
8673 flag & IEEE80211_CHAN_W_RADAR_DETECT ?
8674 " (IEEE 802.11h required)" : "",
8675 (!(channels[i].flag & IEEE80211_CHAN_W_IBSS)
8676 || (channels[i].
8677 flag &
8678 IEEE80211_CHAN_W_RADAR_DETECT)) ? "" :
8679 ", IBSS",
8680 channels[i].
8681 flag & IEEE80211_CHAN_W_ACTIVE_SCAN ?
8682 "active/passive" : "passive only");
8683
8684 hw_mode = iwl_get_hw_mode(priv, MODE_IEEE80211A);
8685 if (hw_mode) {
8686 channels = hw_mode->channels;
8687 count = hw_mode->num_channels;
8688 } else {
8689 channels = NULL;
8690 count = 0;
8691 }
8692
8693 len += sprintf(&buf[len], "Displaying %d channels in 5.2GHz band "
8694 "(802.11a):\n", count);
8695
8696 for (i = 0; i < count; i++)
8697 len += sprintf(&buf[len], "%d: %ddBm: BSS%s%s, %s.\n",
8698 channels[i].chan,
8699 channels[i].power_level,
8700 channels[i].
8701 flag & IEEE80211_CHAN_W_RADAR_DETECT ?
8702 " (IEEE 802.11h required)" : "",
8703 (!(channels[i].flag & IEEE80211_CHAN_W_IBSS)
8704 || (channels[i].
8705 flag &
8706 IEEE80211_CHAN_W_RADAR_DETECT)) ? "" :
8707 ", IBSS",
8708 channels[i].
8709 flag & IEEE80211_CHAN_W_ACTIVE_SCAN ?
8710 "active/passive" : "passive only");
8711
8712 return len;
8713 }
8714
8715 static DEVICE_ATTR(channels, S_IRUSR, show_channels, NULL);
8716
8717 static ssize_t show_statistics(struct device *d,
8718 struct device_attribute *attr, char *buf)
8719 {
8720 struct iwl_priv *priv = dev_get_drvdata(d);
8721 u32 size = sizeof(struct iwl_notif_statistics);
8722 u32 len = 0, ofs = 0;
8723 u8 *data = (u8 *) & priv->statistics;
8724 int rc = 0;
8725
8726 if (!iwl_is_alive(priv))
8727 return -EAGAIN;
8728
8729 mutex_lock(&priv->mutex);
8730 rc = iwl_send_statistics_request(priv);
8731 mutex_unlock(&priv->mutex);
8732
8733 if (rc) {
8734 len = sprintf(buf,
8735 "Error sending statistics request: 0x%08X\n", rc);
8736 return len;
8737 }
8738
8739 while (size && (PAGE_SIZE - len)) {
8740 hex_dump_to_buffer(data + ofs, size, 16, 1, buf + len,
8741 PAGE_SIZE - len, 1);
8742 len = strlen(buf);
8743 if (PAGE_SIZE - len)
8744 buf[len++] = '\n';
8745
8746 ofs += 16;
8747 size -= min(size, 16U);
8748 }
8749
8750 return len;
8751 }
8752
8753 static DEVICE_ATTR(statistics, S_IRUGO, show_statistics, NULL);
8754
8755 static ssize_t show_antenna(struct device *d,
8756 struct device_attribute *attr, char *buf)
8757 {
8758 struct iwl_priv *priv = dev_get_drvdata(d);
8759
8760 if (!iwl_is_alive(priv))
8761 return -EAGAIN;
8762
8763 return sprintf(buf, "%d\n", priv->antenna);
8764 }
8765
8766 static ssize_t store_antenna(struct device *d,
8767 struct device_attribute *attr,
8768 const char *buf, size_t count)
8769 {
8770 int ant;
8771 struct iwl_priv *priv = dev_get_drvdata(d);
8772
8773 if (count == 0)
8774 return 0;
8775
8776 if (sscanf(buf, "%1i", &ant) != 1) {
8777 IWL_DEBUG_INFO("not in hex or decimal form.\n");
8778 return count;
8779 }
8780
8781 if ((ant >= 0) && (ant <= 2)) {
8782 IWL_DEBUG_INFO("Setting antenna select to %d.\n", ant);
8783 priv->antenna = (enum iwl_antenna)ant;
8784 } else
8785 IWL_DEBUG_INFO("Bad antenna select value %d.\n", ant);
8786
8787
8788 return count;
8789 }
8790
8791 static DEVICE_ATTR(antenna, S_IWUSR | S_IRUGO, show_antenna, store_antenna);
8792
8793 static ssize_t show_status(struct device *d,
8794 struct device_attribute *attr, char *buf)
8795 {
8796 struct iwl_priv *priv = (struct iwl_priv *)d->driver_data;
8797 if (!iwl_is_alive(priv))
8798 return -EAGAIN;
8799 return sprintf(buf, "0x%08x\n", (int)priv->status);
8800 }
8801
8802 static DEVICE_ATTR(status, S_IRUGO, show_status, NULL);
8803
8804 static ssize_t dump_error_log(struct device *d,
8805 struct device_attribute *attr,
8806 const char *buf, size_t count)
8807 {
8808 char *p = (char *)buf;
8809
8810 if (p[0] == '1')
8811 iwl_dump_nic_error_log((struct iwl_priv *)d->driver_data);
8812
8813 return strnlen(buf, count);
8814 }
8815
8816 static DEVICE_ATTR(dump_errors, S_IWUSR, NULL, dump_error_log);
8817
8818 static ssize_t dump_event_log(struct device *d,
8819 struct device_attribute *attr,
8820 const char *buf, size_t count)
8821 {
8822 char *p = (char *)buf;
8823
8824 if (p[0] == '1')
8825 iwl_dump_nic_event_log((struct iwl_priv *)d->driver_data);
8826
8827 return strnlen(buf, count);
8828 }
8829
8830 static DEVICE_ATTR(dump_events, S_IWUSR, NULL, dump_event_log);
8831
8832 /*****************************************************************************
8833 *
8834 * driver setup and teardown
8835 *
8836 *****************************************************************************/
8837
8838 static void iwl_setup_deferred_work(struct iwl_priv *priv)
8839 {
8840 priv->workqueue = create_workqueue(DRV_NAME);
8841
8842 init_waitqueue_head(&priv->wait_command_queue);
8843
8844 INIT_WORK(&priv->up, iwl_bg_up);
8845 INIT_WORK(&priv->restart, iwl_bg_restart);
8846 INIT_WORK(&priv->rx_replenish, iwl_bg_rx_replenish);
8847 INIT_WORK(&priv->scan_completed, iwl_bg_scan_completed);
8848 INIT_WORK(&priv->request_scan, iwl_bg_request_scan);
8849 INIT_WORK(&priv->abort_scan, iwl_bg_abort_scan);
8850 INIT_WORK(&priv->rf_kill, iwl_bg_rf_kill);
8851 INIT_WORK(&priv->beacon_update, iwl_bg_beacon_update);
8852 INIT_DELAYED_WORK(&priv->post_associate, iwl_bg_post_associate);
8853 INIT_DELAYED_WORK(&priv->init_alive_start, iwl_bg_init_alive_start);
8854 INIT_DELAYED_WORK(&priv->alive_start, iwl_bg_alive_start);
8855 INIT_DELAYED_WORK(&priv->scan_check, iwl_bg_scan_check);
8856
8857 iwl_hw_setup_deferred_work(priv);
8858
8859 tasklet_init(&priv->irq_tasklet, (void (*)(unsigned long))
8860 iwl_irq_tasklet, (unsigned long)priv);
8861 }
8862
8863 static void iwl_cancel_deferred_work(struct iwl_priv *priv)
8864 {
8865 iwl_hw_cancel_deferred_work(priv);
8866
8867 cancel_delayed_work(&priv->scan_check);
8868 cancel_delayed_work(&priv->alive_start);
8869 cancel_delayed_work(&priv->post_associate);
8870 cancel_work_sync(&priv->beacon_update);
8871 }
8872
8873 static struct attribute *iwl_sysfs_entries[] = {
8874 &dev_attr_antenna.attr,
8875 &dev_attr_channels.attr,
8876 &dev_attr_dump_errors.attr,
8877 &dev_attr_dump_events.attr,
8878 &dev_attr_flags.attr,
8879 &dev_attr_filter_flags.attr,
8880 #ifdef CONFIG_IWLWIFI_SPECTRUM_MEASUREMENT
8881 &dev_attr_measurement.attr,
8882 #endif
8883 &dev_attr_power_level.attr,
8884 &dev_attr_retry_rate.attr,
8885 &dev_attr_rf_kill.attr,
8886 &dev_attr_rs_window.attr,
8887 &dev_attr_statistics.attr,
8888 &dev_attr_status.attr,
8889 &dev_attr_temperature.attr,
8890 &dev_attr_tune.attr,
8891 &dev_attr_tx_power.attr,
8892
8893 NULL
8894 };
8895
8896 static struct attribute_group iwl_attribute_group = {
8897 .name = NULL, /* put in device directory */
8898 .attrs = iwl_sysfs_entries,
8899 };
8900
8901 static struct ieee80211_ops iwl_hw_ops = {
8902 .tx = iwl_mac_tx,
8903 .start = iwl_mac_start,
8904 .stop = iwl_mac_stop,
8905 .add_interface = iwl_mac_add_interface,
8906 .remove_interface = iwl_mac_remove_interface,
8907 .config = iwl_mac_config,
8908 .config_interface = iwl_mac_config_interface,
8909 .configure_filter = iwl_configure_filter,
8910 .set_key = iwl_mac_set_key,
8911 .get_stats = iwl_mac_get_stats,
8912 .get_tx_stats = iwl_mac_get_tx_stats,
8913 .conf_tx = iwl_mac_conf_tx,
8914 .get_tsf = iwl_mac_get_tsf,
8915 .reset_tsf = iwl_mac_reset_tsf,
8916 .beacon_update = iwl_mac_beacon_update,
8917 #ifdef CONFIG_IWLWIFI_HT
8918 .conf_ht = iwl_mac_conf_ht,
8919 .get_ht_capab = iwl_mac_get_ht_capab,
8920 #ifdef CONFIG_IWLWIFI_HT_AGG
8921 .ht_tx_agg_start = iwl_mac_ht_tx_agg_start,
8922 .ht_tx_agg_stop = iwl_mac_ht_tx_agg_stop,
8923 .ht_rx_agg_start = iwl_mac_ht_rx_agg_start,
8924 .ht_rx_agg_stop = iwl_mac_ht_rx_agg_stop,
8925 #endif /* CONFIG_IWLWIFI_HT_AGG */
8926 #endif /* CONFIG_IWLWIFI_HT */
8927 .hw_scan = iwl_mac_hw_scan
8928 };
8929
8930 static int iwl_pci_probe(struct pci_dev *pdev, const struct pci_device_id *ent)
8931 {
8932 int err = 0;
8933 struct iwl_priv *priv;
8934 struct ieee80211_hw *hw;
8935 int i;
8936
8937 if (iwl_param_disable_hw_scan) {
8938 IWL_DEBUG_INFO("Disabling hw_scan\n");
8939 iwl_hw_ops.hw_scan = NULL;
8940 }
8941
8942 if ((iwl_param_queues_num > IWL_MAX_NUM_QUEUES) ||
8943 (iwl_param_queues_num < IWL_MIN_NUM_QUEUES)) {
8944 IWL_ERROR("invalid queues_num, should be between %d and %d\n",
8945 IWL_MIN_NUM_QUEUES, IWL_MAX_NUM_QUEUES);
8946 err = -EINVAL;
8947 goto out;
8948 }
8949
8950 /* mac80211 allocates memory for this device instance, including
8951 * space for this driver's private structure */
8952 hw = ieee80211_alloc_hw(sizeof(struct iwl_priv), &iwl_hw_ops);
8953 if (hw == NULL) {
8954 IWL_ERROR("Can not allocate network device\n");
8955 err = -ENOMEM;
8956 goto out;
8957 }
8958 SET_IEEE80211_DEV(hw, &pdev->dev);
8959
8960 hw->rate_control_algorithm = "iwl-4965-rs";
8961
8962 IWL_DEBUG_INFO("*** LOAD DRIVER ***\n");
8963 priv = hw->priv;
8964 priv->hw = hw;
8965
8966 priv->pci_dev = pdev;
8967 priv->antenna = (enum iwl_antenna)iwl_param_antenna;
8968 #ifdef CONFIG_IWLWIFI_DEBUG
8969 iwl_debug_level = iwl_param_debug;
8970 atomic_set(&priv->restrict_refcnt, 0);
8971 #endif
8972 priv->retry_rate = 1;
8973
8974 priv->ibss_beacon = NULL;
8975
8976 /* Tell mac80211 and its clients (e.g. Wireless Extensions)
8977 * the range of signal quality values that we'll provide.
8978 * Negative values for level/noise indicate that we'll provide dBm.
8979 * For WE, at least, non-0 values here *enable* display of values
8980 * in app (iwconfig). */
8981 hw->max_rssi = -20; /* signal level, negative indicates dBm */
8982 hw->max_noise = -20; /* noise level, negative indicates dBm */
8983 hw->max_signal = 100; /* link quality indication (%) */
8984
8985 /* Tell mac80211 our Tx characteristics */
8986 hw->flags = IEEE80211_HW_HOST_GEN_BEACON_TEMPLATE;
8987
8988 hw->queues = 4;
8989 #ifdef CONFIG_IWLWIFI_HT
8990 #ifdef CONFIG_IWLWIFI_HT_AGG
8991 hw->queues = 16;
8992 #endif /* CONFIG_IWLWIFI_HT_AGG */
8993 #endif /* CONFIG_IWLWIFI_HT */
8994
8995 spin_lock_init(&priv->lock);
8996 spin_lock_init(&priv->power_data.lock);
8997 spin_lock_init(&priv->sta_lock);
8998 spin_lock_init(&priv->hcmd_lock);
8999 spin_lock_init(&priv->lq_mngr.lock);
9000
9001 for (i = 0; i < IWL_IBSS_MAC_HASH_SIZE; i++)
9002 INIT_LIST_HEAD(&priv->ibss_mac_hash[i]);
9003
9004 INIT_LIST_HEAD(&priv->free_frames);
9005
9006 mutex_init(&priv->mutex);
9007 if (pci_enable_device(pdev)) {
9008 err = -ENODEV;
9009 goto out_ieee80211_free_hw;
9010 }
9011
9012 pci_set_master(pdev);
9013
9014 iwl_clear_stations_table(priv);
9015
9016 priv->data_retry_limit = -1;
9017 priv->ieee_channels = NULL;
9018 priv->ieee_rates = NULL;
9019 priv->phymode = -1;
9020
9021 err = pci_set_dma_mask(pdev, DMA_32BIT_MASK);
9022 if (!err)
9023 err = pci_set_consistent_dma_mask(pdev, DMA_32BIT_MASK);
9024 if (err) {
9025 printk(KERN_WARNING DRV_NAME ": No suitable DMA available.\n");
9026 goto out_pci_disable_device;
9027 }
9028
9029 pci_set_drvdata(pdev, priv);
9030 err = pci_request_regions(pdev, DRV_NAME);
9031 if (err)
9032 goto out_pci_disable_device;
9033 /* We disable the RETRY_TIMEOUT register (0x41) to keep
9034 * PCI Tx retries from interfering with C3 CPU state */
9035 pci_write_config_byte(pdev, 0x41, 0x00);
9036 priv->hw_base = pci_iomap(pdev, 0, 0);
9037 if (!priv->hw_base) {
9038 err = -ENODEV;
9039 goto out_pci_release_regions;
9040 }
9041
9042 IWL_DEBUG_INFO("pci_resource_len = 0x%08llx\n",
9043 (unsigned long long) pci_resource_len(pdev, 0));
9044 IWL_DEBUG_INFO("pci_resource_base = %p\n", priv->hw_base);
9045
9046 /* Initialize module parameter values here */
9047
9048 if (iwl_param_disable) {
9049 set_bit(STATUS_RF_KILL_SW, &priv->status);
9050 IWL_DEBUG_INFO("Radio disabled.\n");
9051 }
9052
9053 priv->iw_mode = IEEE80211_IF_TYPE_STA;
9054
9055 priv->ps_mode = 0;
9056 priv->use_ant_b_for_management_frame = 1; /* start with ant B */
9057 priv->is_ht_enabled = 1;
9058 priv->channel_width = IWL_CHANNEL_WIDTH_40MHZ;
9059 priv->valid_antenna = 0x7; /* assume all 3 connected */
9060 priv->ps_mode = IWL_MIMO_PS_NONE;
9061 priv->cck_power_index_compensation = iwl_read32(
9062 priv, CSR_HW_REV_WA_REG);
9063
9064 iwl4965_set_rxon_chain(priv);
9065
9066 printk(KERN_INFO DRV_NAME
9067 ": Detected Intel Wireless WiFi Link 4965AGN\n");
9068
9069 /* Device-specific setup */
9070 if (iwl_hw_set_hw_setting(priv)) {
9071 IWL_ERROR("failed to set hw settings\n");
9072 mutex_unlock(&priv->mutex);
9073 goto out_iounmap;
9074 }
9075
9076 #ifdef CONFIG_IWLWIFI_QOS
9077 if (iwl_param_qos_enable)
9078 priv->qos_data.qos_enable = 1;
9079
9080 iwl_reset_qos(priv);
9081
9082 priv->qos_data.qos_active = 0;
9083 priv->qos_data.qos_cap.val = 0;
9084 #endif /* CONFIG_IWLWIFI_QOS */
9085
9086 iwl_set_rxon_channel(priv, MODE_IEEE80211G, 6);
9087 iwl_setup_deferred_work(priv);
9088 iwl_setup_rx_handlers(priv);
9089
9090 priv->rates_mask = IWL_RATES_MASK;
9091 /* If power management is turned on, default to AC mode */
9092 priv->power_mode = IWL_POWER_AC;
9093 priv->user_txpower_limit = IWL_DEFAULT_TX_POWER;
9094
9095 pci_enable_msi(pdev);
9096
9097 err = request_irq(pdev->irq, iwl_isr, IRQF_SHARED, DRV_NAME, priv);
9098 if (err) {
9099 IWL_ERROR("Error allocating IRQ %d\n", pdev->irq);
9100 goto out_disable_msi;
9101 }
9102
9103 mutex_lock(&priv->mutex);
9104
9105 err = sysfs_create_group(&pdev->dev.kobj, &iwl_attribute_group);
9106 if (err) {
9107 IWL_ERROR("failed to create sysfs device attributes\n");
9108 mutex_unlock(&priv->mutex);
9109 goto out_release_irq;
9110 }
9111
9112 /* fetch ucode file from disk, alloc and copy to bus-master buffers ...
9113 * ucode filename and max sizes are card-specific. */
9114 err = iwl_read_ucode(priv);
9115 if (err) {
9116 IWL_ERROR("Could not read microcode: %d\n", err);
9117 mutex_unlock(&priv->mutex);
9118 goto out_pci_alloc;
9119 }
9120
9121 mutex_unlock(&priv->mutex);
9122
9123 IWL_DEBUG_INFO("Queing UP work.\n");
9124
9125 queue_work(priv->workqueue, &priv->up);
9126
9127 return 0;
9128
9129 out_pci_alloc:
9130 iwl_dealloc_ucode_pci(priv);
9131
9132 sysfs_remove_group(&pdev->dev.kobj, &iwl_attribute_group);
9133
9134 out_release_irq:
9135 free_irq(pdev->irq, priv);
9136
9137 out_disable_msi:
9138 pci_disable_msi(pdev);
9139 destroy_workqueue(priv->workqueue);
9140 priv->workqueue = NULL;
9141 iwl_unset_hw_setting(priv);
9142
9143 out_iounmap:
9144 pci_iounmap(pdev, priv->hw_base);
9145 out_pci_release_regions:
9146 pci_release_regions(pdev);
9147 out_pci_disable_device:
9148 pci_disable_device(pdev);
9149 pci_set_drvdata(pdev, NULL);
9150 out_ieee80211_free_hw:
9151 ieee80211_free_hw(priv->hw);
9152 out:
9153 return err;
9154 }
9155
9156 static void iwl_pci_remove(struct pci_dev *pdev)
9157 {
9158 struct iwl_priv *priv = pci_get_drvdata(pdev);
9159 struct list_head *p, *q;
9160 int i;
9161
9162 if (!priv)
9163 return;
9164
9165 IWL_DEBUG_INFO("*** UNLOAD DRIVER ***\n");
9166
9167 mutex_lock(&priv->mutex);
9168 set_bit(STATUS_EXIT_PENDING, &priv->status);
9169 __iwl_down(priv);
9170 mutex_unlock(&priv->mutex);
9171
9172 /* Free MAC hash list for ADHOC */
9173 for (i = 0; i < IWL_IBSS_MAC_HASH_SIZE; i++) {
9174 list_for_each_safe(p, q, &priv->ibss_mac_hash[i]) {
9175 list_del(p);
9176 kfree(list_entry(p, struct iwl_ibss_seq, list));
9177 }
9178 }
9179
9180 sysfs_remove_group(&pdev->dev.kobj, &iwl_attribute_group);
9181
9182 iwl_dealloc_ucode_pci(priv);
9183
9184 if (priv->rxq.bd)
9185 iwl_rx_queue_free(priv, &priv->rxq);
9186 iwl_hw_txq_ctx_free(priv);
9187
9188 iwl_unset_hw_setting(priv);
9189 iwl_clear_stations_table(priv);
9190
9191 if (priv->mac80211_registered) {
9192 ieee80211_unregister_hw(priv->hw);
9193 iwl_rate_control_unregister(priv->hw);
9194 }
9195
9196 /*netif_stop_queue(dev); */
9197 flush_workqueue(priv->workqueue);
9198
9199 /* ieee80211_unregister_hw calls iwl_mac_stop, which flushes
9200 * priv->workqueue... so we can't take down the workqueue
9201 * until now... */
9202 destroy_workqueue(priv->workqueue);
9203 priv->workqueue = NULL;
9204
9205 free_irq(pdev->irq, priv);
9206 pci_disable_msi(pdev);
9207 pci_iounmap(pdev, priv->hw_base);
9208 pci_release_regions(pdev);
9209 pci_disable_device(pdev);
9210 pci_set_drvdata(pdev, NULL);
9211
9212 kfree(priv->channel_info);
9213
9214 kfree(priv->ieee_channels);
9215 kfree(priv->ieee_rates);
9216
9217 if (priv->ibss_beacon)
9218 dev_kfree_skb(priv->ibss_beacon);
9219
9220 ieee80211_free_hw(priv->hw);
9221 }
9222
9223 #ifdef CONFIG_PM
9224
9225 static int iwl_pci_suspend(struct pci_dev *pdev, pm_message_t state)
9226 {
9227 struct iwl_priv *priv = pci_get_drvdata(pdev);
9228
9229 mutex_lock(&priv->mutex);
9230
9231 set_bit(STATUS_IN_SUSPEND, &priv->status);
9232
9233 /* Take down the device; powers it off, etc. */
9234 __iwl_down(priv);
9235
9236 if (priv->mac80211_registered)
9237 ieee80211_stop_queues(priv->hw);
9238
9239 pci_save_state(pdev);
9240 pci_disable_device(pdev);
9241 pci_set_power_state(pdev, PCI_D3hot);
9242
9243 mutex_unlock(&priv->mutex);
9244
9245 return 0;
9246 }
9247
9248 static void iwl_resume(struct iwl_priv *priv)
9249 {
9250 unsigned long flags;
9251
9252 /* The following it a temporary work around due to the
9253 * suspend / resume not fully initializing the NIC correctly.
9254 * Without all of the following, resume will not attempt to take
9255 * down the NIC (it shouldn't really need to) and will just try
9256 * and bring the NIC back up. However that fails during the
9257 * ucode verification process. This then causes iwl_down to be
9258 * called *after* iwl_hw_nic_init() has succeeded -- which
9259 * then lets the next init sequence succeed. So, we've
9260 * replicated all of that NIC init code here... */
9261
9262 iwl_write32(priv, CSR_INT, 0xFFFFFFFF);
9263
9264 iwl_hw_nic_init(priv);
9265
9266 iwl_write32(priv, CSR_UCODE_DRV_GP1_CLR, CSR_UCODE_SW_BIT_RFKILL);
9267 iwl_write32(priv, CSR_UCODE_DRV_GP1_CLR,
9268 CSR_UCODE_DRV_GP1_BIT_CMD_BLOCKED);
9269 iwl_write32(priv, CSR_INT, 0xFFFFFFFF);
9270 iwl_write32(priv, CSR_UCODE_DRV_GP1_CLR, CSR_UCODE_SW_BIT_RFKILL);
9271 iwl_write32(priv, CSR_UCODE_DRV_GP1_CLR, CSR_UCODE_SW_BIT_RFKILL);
9272
9273 /* tell the device to stop sending interrupts */
9274 iwl_disable_interrupts(priv);
9275
9276 spin_lock_irqsave(&priv->lock, flags);
9277 iwl_clear_bit(priv, CSR_GP_CNTRL, CSR_GP_CNTRL_REG_FLAG_MAC_ACCESS_REQ);
9278
9279 if (!iwl_grab_restricted_access(priv)) {
9280 iwl_write_restricted_reg(priv, APMG_CLK_DIS_REG,
9281 APMG_CLK_VAL_DMA_CLK_RQT);
9282 iwl_release_restricted_access(priv);
9283 }
9284 spin_unlock_irqrestore(&priv->lock, flags);
9285
9286 udelay(5);
9287
9288 iwl_hw_nic_reset(priv);
9289
9290 /* Bring the device back up */
9291 clear_bit(STATUS_IN_SUSPEND, &priv->status);
9292 queue_work(priv->workqueue, &priv->up);
9293 }
9294
9295 static int iwl_pci_resume(struct pci_dev *pdev)
9296 {
9297 struct iwl_priv *priv = pci_get_drvdata(pdev);
9298 int err;
9299
9300 printk(KERN_INFO "Coming out of suspend...\n");
9301
9302 mutex_lock(&priv->mutex);
9303
9304 pci_set_power_state(pdev, PCI_D0);
9305 err = pci_enable_device(pdev);
9306 pci_restore_state(pdev);
9307
9308 /*
9309 * Suspend/Resume resets the PCI configuration space, so we have to
9310 * re-disable the RETRY_TIMEOUT register (0x41) to keep PCI Tx retries
9311 * from interfering with C3 CPU state. pci_restore_state won't help
9312 * here since it only restores the first 64 bytes pci config header.
9313 */
9314 pci_write_config_byte(pdev, 0x41, 0x00);
9315
9316 iwl_resume(priv);
9317 mutex_unlock(&priv->mutex);
9318
9319 return 0;
9320 }
9321
9322 #endif /* CONFIG_PM */
9323
9324 /*****************************************************************************
9325 *
9326 * driver and module entry point
9327 *
9328 *****************************************************************************/
9329
9330 static struct pci_driver iwl_driver = {
9331 .name = DRV_NAME,
9332 .id_table = iwl_hw_card_ids,
9333 .probe = iwl_pci_probe,
9334 .remove = __devexit_p(iwl_pci_remove),
9335 #ifdef CONFIG_PM
9336 .suspend = iwl_pci_suspend,
9337 .resume = iwl_pci_resume,
9338 #endif
9339 };
9340
9341 static int __init iwl_init(void)
9342 {
9343
9344 int ret;
9345 printk(KERN_INFO DRV_NAME ": " DRV_DESCRIPTION ", " DRV_VERSION "\n");
9346 printk(KERN_INFO DRV_NAME ": " DRV_COPYRIGHT "\n");
9347 ret = pci_register_driver(&iwl_driver);
9348 if (ret) {
9349 IWL_ERROR("Unable to initialize PCI module\n");
9350 return ret;
9351 }
9352 #ifdef CONFIG_IWLWIFI_DEBUG
9353 ret = driver_create_file(&iwl_driver.driver, &driver_attr_debug_level);
9354 if (ret) {
9355 IWL_ERROR("Unable to create driver sysfs file\n");
9356 pci_unregister_driver(&iwl_driver);
9357 return ret;
9358 }
9359 #endif
9360
9361 return ret;
9362 }
9363
9364 static void __exit iwl_exit(void)
9365 {
9366 #ifdef CONFIG_IWLWIFI_DEBUG
9367 driver_remove_file(&iwl_driver.driver, &driver_attr_debug_level);
9368 #endif
9369 pci_unregister_driver(&iwl_driver);
9370 }
9371
9372 module_param_named(antenna, iwl_param_antenna, int, 0444);
9373 MODULE_PARM_DESC(antenna, "select antenna (1=Main, 2=Aux, default 0 [both])");
9374 module_param_named(disable, iwl_param_disable, int, 0444);
9375 MODULE_PARM_DESC(disable, "manually disable the radio (default 0 [radio on])");
9376 module_param_named(hwcrypto, iwl_param_hwcrypto, int, 0444);
9377 MODULE_PARM_DESC(hwcrypto,
9378 "using hardware crypto engine (default 0 [software])\n");
9379 module_param_named(debug, iwl_param_debug, int, 0444);
9380 MODULE_PARM_DESC(debug, "debug output mask");
9381 module_param_named(disable_hw_scan, iwl_param_disable_hw_scan, int, 0444);
9382 MODULE_PARM_DESC(disable_hw_scan, "disable hardware scanning (default 0)");
9383
9384 module_param_named(queues_num, iwl_param_queues_num, int, 0444);
9385 MODULE_PARM_DESC(queues_num, "number of hw queues.");
9386
9387 /* QoS */
9388 module_param_named(qos_enable, iwl_param_qos_enable, int, 0444);
9389 MODULE_PARM_DESC(qos_enable, "enable all QoS functionality");
9390
9391 module_exit(iwl_exit);
9392 module_init(iwl_init);
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