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Merge branch 'master' of git://git.kernel.org/pub/scm/linux/kernel/git/davem/net-2.6
[mirror_ubuntu-artful-kernel.git] / drivers / net / wireless / iwlwifi / iwl4965-base.c
1 /******************************************************************************
2 *
3 * Copyright(c) 2003 - 2007 Intel Corporation. All rights reserved.
4 *
5 * Portions of this file are derived from the ipw3945 project, as well
6 * as portions of the ieee80211 subsystem header files.
7 *
8 * This program is free software; you can redistribute it and/or modify it
9 * under the terms of version 2 of the GNU General Public License as
10 * published by the Free Software Foundation.
11 *
12 * This program is distributed in the hope that it will be useful, but WITHOUT
13 * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
14 * FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License for
15 * more details.
16 *
17 * You should have received a copy of the GNU General Public License along with
18 * this program; if not, write to the Free Software Foundation, Inc.,
19 * 51 Franklin Street, Fifth Floor, Boston, MA 02110, USA
20 *
21 * The full GNU General Public License is included in this distribution in the
22 * file called LICENSE.
23 *
24 * Contact Information:
25 * James P. Ketrenos <ipw2100-admin@linux.intel.com>
26 * Intel Corporation, 5200 N.E. Elam Young Parkway, Hillsboro, OR 97124-6497
27 *
28 *****************************************************************************/
29
30 /*
31 * NOTE: This file (iwl-base.c) is used to build to multiple hardware targets
32 * by defining IWL to either 3945 or 4965. The Makefile used when building
33 * the base targets will create base-3945.o and base-4965.o
34 *
35 * The eventual goal is to move as many of the #if IWL / #endif blocks out of
36 * this file and into the hardware specific implementation files (iwl-XXXX.c)
37 * and leave only the common (non #ifdef sprinkled) code in this file
38 */
39
40 #include <linux/kernel.h>
41 #include <linux/module.h>
42 #include <linux/version.h>
43 #include <linux/init.h>
44 #include <linux/pci.h>
45 #include <linux/dma-mapping.h>
46 #include <linux/delay.h>
47 #include <linux/skbuff.h>
48 #include <linux/netdevice.h>
49 #include <linux/wireless.h>
50 #include <linux/firmware.h>
51 #include <linux/etherdevice.h>
52 #include <linux/if_arp.h>
53
54 #include <net/ieee80211_radiotap.h>
55 #include <net/mac80211.h>
56
57 #include <asm/div64.h>
58
59 #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 */
5160 IWL_WARNING("HARDWARE GONE?? INTA == 0x%080x\n", inta);
5161 goto none;
5162 }
5163
5164 IWL_DEBUG_ISR("ISR inta 0x%08x, enabled 0x%08x, fh 0x%08x\n",
5165 inta, inta_mask, inta_fh);
5166
5167 /* iwl_irq_tasklet() will service interrupts and re-enable them */
5168 tasklet_schedule(&priv->irq_tasklet);
5169 spin_unlock(&priv->lock);
5170
5171 return IRQ_HANDLED;
5172
5173 none:
5174 /* re-enable interrupts here since we don't have anything to service. */
5175 iwl_enable_interrupts(priv);
5176 spin_unlock(&priv->lock);
5177 return IRQ_NONE;
5178 }
5179
5180 /************************** EEPROM BANDS ****************************
5181 *
5182 * The iwl_eeprom_band definitions below provide the mapping from the
5183 * EEPROM contents to the specific channel number supported for each
5184 * band.
5185 *
5186 * For example, iwl_priv->eeprom.band_3_channels[4] from the band_3
5187 * definition below maps to physical channel 42 in the 5.2GHz spectrum.
5188 * The specific geography and calibration information for that channel
5189 * is contained in the eeprom map itself.
5190 *
5191 * During init, we copy the eeprom information and channel map
5192 * information into priv->channel_info_24/52 and priv->channel_map_24/52
5193 *
5194 * channel_map_24/52 provides the index in the channel_info array for a
5195 * given channel. We have to have two separate maps as there is channel
5196 * overlap with the 2.4GHz and 5.2GHz spectrum as seen in band_1 and
5197 * band_2
5198 *
5199 * A value of 0xff stored in the channel_map indicates that the channel
5200 * is not supported by the hardware at all.
5201 *
5202 * A value of 0xfe in the channel_map indicates that the channel is not
5203 * valid for Tx with the current hardware. This means that
5204 * while the system can tune and receive on a given channel, it may not
5205 * be able to associate or transmit any frames on that
5206 * channel. There is no corresponding channel information for that
5207 * entry.
5208 *
5209 *********************************************************************/
5210
5211 /* 2.4 GHz */
5212 static const u8 iwl_eeprom_band_1[14] = {
5213 1, 2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13, 14
5214 };
5215
5216 /* 5.2 GHz bands */
5217 static const u8 iwl_eeprom_band_2[] = {
5218 183, 184, 185, 187, 188, 189, 192, 196, 7, 8, 11, 12, 16
5219 };
5220
5221 static const u8 iwl_eeprom_band_3[] = { /* 5205-5320MHz */
5222 34, 36, 38, 40, 42, 44, 46, 48, 52, 56, 60, 64
5223 };
5224
5225 static const u8 iwl_eeprom_band_4[] = { /* 5500-5700MHz */
5226 100, 104, 108, 112, 116, 120, 124, 128, 132, 136, 140
5227 };
5228
5229 static const u8 iwl_eeprom_band_5[] = { /* 5725-5825MHz */
5230 145, 149, 153, 157, 161, 165
5231 };
5232
5233 static u8 iwl_eeprom_band_6[] = { /* 2.4 FAT channel */
5234 1, 2, 3, 4, 5, 6, 7
5235 };
5236
5237 static u8 iwl_eeprom_band_7[] = { /* 5.2 FAT channel */
5238 36, 44, 52, 60, 100, 108, 116, 124, 132, 149, 157
5239 };
5240
5241 static void iwl_init_band_reference(const struct iwl_priv *priv, int band,
5242 int *eeprom_ch_count,
5243 const struct iwl_eeprom_channel
5244 **eeprom_ch_info,
5245 const u8 **eeprom_ch_index)
5246 {
5247 switch (band) {
5248 case 1: /* 2.4GHz band */
5249 *eeprom_ch_count = ARRAY_SIZE(iwl_eeprom_band_1);
5250 *eeprom_ch_info = priv->eeprom.band_1_channels;
5251 *eeprom_ch_index = iwl_eeprom_band_1;
5252 break;
5253 case 2: /* 5.2GHz band */
5254 *eeprom_ch_count = ARRAY_SIZE(iwl_eeprom_band_2);
5255 *eeprom_ch_info = priv->eeprom.band_2_channels;
5256 *eeprom_ch_index = iwl_eeprom_band_2;
5257 break;
5258 case 3: /* 5.2GHz band */
5259 *eeprom_ch_count = ARRAY_SIZE(iwl_eeprom_band_3);
5260 *eeprom_ch_info = priv->eeprom.band_3_channels;
5261 *eeprom_ch_index = iwl_eeprom_band_3;
5262 break;
5263 case 4: /* 5.2GHz band */
5264 *eeprom_ch_count = ARRAY_SIZE(iwl_eeprom_band_4);
5265 *eeprom_ch_info = priv->eeprom.band_4_channels;
5266 *eeprom_ch_index = iwl_eeprom_band_4;
5267 break;
5268 case 5: /* 5.2GHz band */
5269 *eeprom_ch_count = ARRAY_SIZE(iwl_eeprom_band_5);
5270 *eeprom_ch_info = priv->eeprom.band_5_channels;
5271 *eeprom_ch_index = iwl_eeprom_band_5;
5272 break;
5273 case 6:
5274 *eeprom_ch_count = ARRAY_SIZE(iwl_eeprom_band_6);
5275 *eeprom_ch_info = priv->eeprom.band_24_channels;
5276 *eeprom_ch_index = iwl_eeprom_band_6;
5277 break;
5278 case 7:
5279 *eeprom_ch_count = ARRAY_SIZE(iwl_eeprom_band_7);
5280 *eeprom_ch_info = priv->eeprom.band_52_channels;
5281 *eeprom_ch_index = iwl_eeprom_band_7;
5282 break;
5283 default:
5284 BUG();
5285 return;
5286 }
5287 }
5288
5289 const struct iwl_channel_info *iwl_get_channel_info(const struct iwl_priv *priv,
5290 int phymode, u16 channel)
5291 {
5292 int i;
5293
5294 switch (phymode) {
5295 case MODE_IEEE80211A:
5296 for (i = 14; i < priv->channel_count; i++) {
5297 if (priv->channel_info[i].channel == channel)
5298 return &priv->channel_info[i];
5299 }
5300 break;
5301
5302 case MODE_IEEE80211B:
5303 case MODE_IEEE80211G:
5304 if (channel >= 1 && channel <= 14)
5305 return &priv->channel_info[channel - 1];
5306 break;
5307
5308 }
5309
5310 return NULL;
5311 }
5312
5313 #define CHECK_AND_PRINT(x) ((eeprom_ch_info[ch].flags & EEPROM_CHANNEL_##x) \
5314 ? # x " " : "")
5315
5316 static int iwl_init_channel_map(struct iwl_priv *priv)
5317 {
5318 int eeprom_ch_count = 0;
5319 const u8 *eeprom_ch_index = NULL;
5320 const struct iwl_eeprom_channel *eeprom_ch_info = NULL;
5321 int band, ch;
5322 struct iwl_channel_info *ch_info;
5323
5324 if (priv->channel_count) {
5325 IWL_DEBUG_INFO("Channel map already initialized.\n");
5326 return 0;
5327 }
5328
5329 if (priv->eeprom.version < 0x2f) {
5330 IWL_WARNING("Unsupported EEPROM version: 0x%04X\n",
5331 priv->eeprom.version);
5332 return -EINVAL;
5333 }
5334
5335 IWL_DEBUG_INFO("Initializing regulatory info from EEPROM\n");
5336
5337 priv->channel_count =
5338 ARRAY_SIZE(iwl_eeprom_band_1) +
5339 ARRAY_SIZE(iwl_eeprom_band_2) +
5340 ARRAY_SIZE(iwl_eeprom_band_3) +
5341 ARRAY_SIZE(iwl_eeprom_band_4) +
5342 ARRAY_SIZE(iwl_eeprom_band_5);
5343
5344 IWL_DEBUG_INFO("Parsing data for %d channels.\n", priv->channel_count);
5345
5346 priv->channel_info = kzalloc(sizeof(struct iwl_channel_info) *
5347 priv->channel_count, GFP_KERNEL);
5348 if (!priv->channel_info) {
5349 IWL_ERROR("Could not allocate channel_info\n");
5350 priv->channel_count = 0;
5351 return -ENOMEM;
5352 }
5353
5354 ch_info = priv->channel_info;
5355
5356 /* Loop through the 5 EEPROM bands adding them in order to the
5357 * channel map we maintain (that contains additional information than
5358 * what just in the EEPROM) */
5359 for (band = 1; band <= 5; band++) {
5360
5361 iwl_init_band_reference(priv, band, &eeprom_ch_count,
5362 &eeprom_ch_info, &eeprom_ch_index);
5363
5364 /* Loop through each band adding each of the channels */
5365 for (ch = 0; ch < eeprom_ch_count; ch++) {
5366 ch_info->channel = eeprom_ch_index[ch];
5367 ch_info->phymode = (band == 1) ? MODE_IEEE80211B :
5368 MODE_IEEE80211A;
5369
5370 /* permanently store EEPROM's channel regulatory flags
5371 * and max power in channel info database. */
5372 ch_info->eeprom = eeprom_ch_info[ch];
5373
5374 /* Copy the run-time flags so they are there even on
5375 * invalid channels */
5376 ch_info->flags = eeprom_ch_info[ch].flags;
5377
5378 if (!(is_channel_valid(ch_info))) {
5379 IWL_DEBUG_INFO("Ch. %d Flags %x [%sGHz] - "
5380 "No traffic\n",
5381 ch_info->channel,
5382 ch_info->flags,
5383 is_channel_a_band(ch_info) ?
5384 "5.2" : "2.4");
5385 ch_info++;
5386 continue;
5387 }
5388
5389 /* Initialize regulatory-based run-time data */
5390 ch_info->max_power_avg = ch_info->curr_txpow =
5391 eeprom_ch_info[ch].max_power_avg;
5392 ch_info->scan_power = eeprom_ch_info[ch].max_power_avg;
5393 ch_info->min_power = 0;
5394
5395 IWL_DEBUG_INFO("Ch. %d [%sGHz] %s%s%s%s%s%s(0x%02x"
5396 " %ddBm): Ad-Hoc %ssupported\n",
5397 ch_info->channel,
5398 is_channel_a_band(ch_info) ?
5399 "5.2" : "2.4",
5400 CHECK_AND_PRINT(IBSS),
5401 CHECK_AND_PRINT(ACTIVE),
5402 CHECK_AND_PRINT(RADAR),
5403 CHECK_AND_PRINT(WIDE),
5404 CHECK_AND_PRINT(NARROW),
5405 CHECK_AND_PRINT(DFS),
5406 eeprom_ch_info[ch].flags,
5407 eeprom_ch_info[ch].max_power_avg,
5408 ((eeprom_ch_info[ch].
5409 flags & EEPROM_CHANNEL_IBSS)
5410 && !(eeprom_ch_info[ch].
5411 flags & EEPROM_CHANNEL_RADAR))
5412 ? "" : "not ");
5413
5414 /* Set the user_txpower_limit to the highest power
5415 * supported by any channel */
5416 if (eeprom_ch_info[ch].max_power_avg >
5417 priv->user_txpower_limit)
5418 priv->user_txpower_limit =
5419 eeprom_ch_info[ch].max_power_avg;
5420
5421 ch_info++;
5422 }
5423 }
5424
5425 for (band = 6; band <= 7; band++) {
5426 int phymode;
5427 u8 fat_extension_chan;
5428
5429 iwl_init_band_reference(priv, band, &eeprom_ch_count,
5430 &eeprom_ch_info, &eeprom_ch_index);
5431
5432 phymode = (band == 6) ? MODE_IEEE80211B : MODE_IEEE80211A;
5433 /* Loop through each band adding each of the channels */
5434 for (ch = 0; ch < eeprom_ch_count; ch++) {
5435
5436 if ((band == 6) &&
5437 ((eeprom_ch_index[ch] == 5) ||
5438 (eeprom_ch_index[ch] == 6) ||
5439 (eeprom_ch_index[ch] == 7)))
5440 fat_extension_chan = HT_IE_EXT_CHANNEL_MAX;
5441 else
5442 fat_extension_chan = HT_IE_EXT_CHANNEL_ABOVE;
5443
5444 iwl4965_set_fat_chan_info(priv, phymode,
5445 eeprom_ch_index[ch],
5446 &(eeprom_ch_info[ch]),
5447 fat_extension_chan);
5448
5449 iwl4965_set_fat_chan_info(priv, phymode,
5450 (eeprom_ch_index[ch] + 4),
5451 &(eeprom_ch_info[ch]),
5452 HT_IE_EXT_CHANNEL_BELOW);
5453 }
5454 }
5455
5456 return 0;
5457 }
5458
5459 /* For active scan, listen ACTIVE_DWELL_TIME (msec) on each channel after
5460 * sending probe req. This should be set long enough to hear probe responses
5461 * from more than one AP. */
5462 #define IWL_ACTIVE_DWELL_TIME_24 (20) /* all times in msec */
5463 #define IWL_ACTIVE_DWELL_TIME_52 (10)
5464
5465 /* For faster active scanning, scan will move to the next channel if fewer than
5466 * PLCP_QUIET_THRESH packets are heard on this channel within
5467 * ACTIVE_QUIET_TIME after sending probe request. This shortens the dwell
5468 * time if it's a quiet channel (nothing responded to our probe, and there's
5469 * no other traffic).
5470 * Disable "quiet" feature by setting PLCP_QUIET_THRESH to 0. */
5471 #define IWL_PLCP_QUIET_THRESH __constant_cpu_to_le16(1) /* packets */
5472 #define IWL_ACTIVE_QUIET_TIME __constant_cpu_to_le16(5) /* msec */
5473
5474 /* For passive scan, listen PASSIVE_DWELL_TIME (msec) on each channel.
5475 * Must be set longer than active dwell time.
5476 * For the most reliable scan, set > AP beacon interval (typically 100msec). */
5477 #define IWL_PASSIVE_DWELL_TIME_24 (20) /* all times in msec */
5478 #define IWL_PASSIVE_DWELL_TIME_52 (10)
5479 #define IWL_PASSIVE_DWELL_BASE (100)
5480 #define IWL_CHANNEL_TUNE_TIME 5
5481
5482 static inline u16 iwl_get_active_dwell_time(struct iwl_priv *priv, int phymode)
5483 {
5484 if (phymode == MODE_IEEE80211A)
5485 return IWL_ACTIVE_DWELL_TIME_52;
5486 else
5487 return IWL_ACTIVE_DWELL_TIME_24;
5488 }
5489
5490 static u16 iwl_get_passive_dwell_time(struct iwl_priv *priv, int phymode)
5491 {
5492 u16 active = iwl_get_active_dwell_time(priv, phymode);
5493 u16 passive = (phymode != MODE_IEEE80211A) ?
5494 IWL_PASSIVE_DWELL_BASE + IWL_PASSIVE_DWELL_TIME_24 :
5495 IWL_PASSIVE_DWELL_BASE + IWL_PASSIVE_DWELL_TIME_52;
5496
5497 if (iwl_is_associated(priv)) {
5498 /* If we're associated, we clamp the maximum passive
5499 * dwell time to be 98% of the beacon interval (minus
5500 * 2 * channel tune time) */
5501 passive = priv->beacon_int;
5502 if ((passive > IWL_PASSIVE_DWELL_BASE) || !passive)
5503 passive = IWL_PASSIVE_DWELL_BASE;
5504 passive = (passive * 98) / 100 - IWL_CHANNEL_TUNE_TIME * 2;
5505 }
5506
5507 if (passive <= active)
5508 passive = active + 1;
5509
5510 return passive;
5511 }
5512
5513 static int iwl_get_channels_for_scan(struct iwl_priv *priv, int phymode,
5514 u8 is_active, u8 direct_mask,
5515 struct iwl_scan_channel *scan_ch)
5516 {
5517 const struct ieee80211_channel *channels = NULL;
5518 const struct ieee80211_hw_mode *hw_mode;
5519 const struct iwl_channel_info *ch_info;
5520 u16 passive_dwell = 0;
5521 u16 active_dwell = 0;
5522 int added, i;
5523
5524 hw_mode = iwl_get_hw_mode(priv, phymode);
5525 if (!hw_mode)
5526 return 0;
5527
5528 channels = hw_mode->channels;
5529
5530 active_dwell = iwl_get_active_dwell_time(priv, phymode);
5531 passive_dwell = iwl_get_passive_dwell_time(priv, phymode);
5532
5533 for (i = 0, added = 0; i < hw_mode->num_channels; i++) {
5534 if (channels[i].chan ==
5535 le16_to_cpu(priv->active_rxon.channel)) {
5536 if (iwl_is_associated(priv)) {
5537 IWL_DEBUG_SCAN
5538 ("Skipping current channel %d\n",
5539 le16_to_cpu(priv->active_rxon.channel));
5540 continue;
5541 }
5542 } else if (priv->only_active_channel)
5543 continue;
5544
5545 scan_ch->channel = channels[i].chan;
5546
5547 ch_info = iwl_get_channel_info(priv, phymode, scan_ch->channel);
5548 if (!is_channel_valid(ch_info)) {
5549 IWL_DEBUG_SCAN("Channel %d is INVALID for this SKU.\n",
5550 scan_ch->channel);
5551 continue;
5552 }
5553
5554 if (!is_active || is_channel_passive(ch_info) ||
5555 !(channels[i].flag & IEEE80211_CHAN_W_ACTIVE_SCAN))
5556 scan_ch->type = 0; /* passive */
5557 else
5558 scan_ch->type = 1; /* active */
5559
5560 if (scan_ch->type & 1)
5561 scan_ch->type |= (direct_mask << 1);
5562
5563 if (is_channel_narrow(ch_info))
5564 scan_ch->type |= (1 << 7);
5565
5566 scan_ch->active_dwell = cpu_to_le16(active_dwell);
5567 scan_ch->passive_dwell = cpu_to_le16(passive_dwell);
5568
5569 /* Set power levels to defaults */
5570 scan_ch->tpc.dsp_atten = 110;
5571 /* scan_pwr_info->tpc.dsp_atten; */
5572
5573 /*scan_pwr_info->tpc.tx_gain; */
5574 if (phymode == MODE_IEEE80211A)
5575 scan_ch->tpc.tx_gain = ((1 << 5) | (3 << 3)) | 3;
5576 else {
5577 scan_ch->tpc.tx_gain = ((1 << 5) | (5 << 3));
5578 /* NOTE: if we were doing 6Mb OFDM for scans we'd use
5579 * power level
5580 scan_ch->tpc.tx_gain = ((1<<5) | (2 << 3)) | 3;
5581 */
5582 }
5583
5584 IWL_DEBUG_SCAN("Scanning %d [%s %d]\n",
5585 scan_ch->channel,
5586 (scan_ch->type & 1) ? "ACTIVE" : "PASSIVE",
5587 (scan_ch->type & 1) ?
5588 active_dwell : passive_dwell);
5589
5590 scan_ch++;
5591 added++;
5592 }
5593
5594 IWL_DEBUG_SCAN("total channels to scan %d \n", added);
5595 return added;
5596 }
5597
5598 static void iwl_reset_channel_flag(struct iwl_priv *priv)
5599 {
5600 int i, j;
5601 for (i = 0; i < 3; i++) {
5602 struct ieee80211_hw_mode *hw_mode = (void *)&priv->modes[i];
5603 for (j = 0; j < hw_mode->num_channels; j++)
5604 hw_mode->channels[j].flag = hw_mode->channels[j].val;
5605 }
5606 }
5607
5608 static void iwl_init_hw_rates(struct iwl_priv *priv,
5609 struct ieee80211_rate *rates)
5610 {
5611 int i;
5612
5613 for (i = 0; i < IWL_RATE_COUNT; i++) {
5614 rates[i].rate = iwl_rates[i].ieee * 5;
5615 rates[i].val = i; /* Rate scaling will work on indexes */
5616 rates[i].val2 = i;
5617 rates[i].flags = IEEE80211_RATE_SUPPORTED;
5618 /* Only OFDM have the bits-per-symbol set */
5619 if ((i <= IWL_LAST_OFDM_RATE) && (i >= IWL_FIRST_OFDM_RATE))
5620 rates[i].flags |= IEEE80211_RATE_OFDM;
5621 else {
5622 /*
5623 * If CCK 1M then set rate flag to CCK else CCK_2
5624 * which is CCK | PREAMBLE2
5625 */
5626 rates[i].flags |= (iwl_rates[i].plcp == 10) ?
5627 IEEE80211_RATE_CCK : IEEE80211_RATE_CCK_2;
5628 }
5629
5630 /* Set up which ones are basic rates... */
5631 if (IWL_BASIC_RATES_MASK & (1 << i))
5632 rates[i].flags |= IEEE80211_RATE_BASIC;
5633 }
5634
5635 iwl4965_init_hw_rates(priv, rates);
5636 }
5637
5638 /**
5639 * iwl_init_geos - Initialize mac80211's geo/channel info based from eeprom
5640 */
5641 static int iwl_init_geos(struct iwl_priv *priv)
5642 {
5643 struct iwl_channel_info *ch;
5644 struct ieee80211_hw_mode *modes;
5645 struct ieee80211_channel *channels;
5646 struct ieee80211_channel *geo_ch;
5647 struct ieee80211_rate *rates;
5648 int i = 0;
5649 enum {
5650 A = 0,
5651 B = 1,
5652 G = 2,
5653 A_11N = 3,
5654 G_11N = 4,
5655 };
5656 int mode_count = 5;
5657
5658 if (priv->modes) {
5659 IWL_DEBUG_INFO("Geography modes already initialized.\n");
5660 set_bit(STATUS_GEO_CONFIGURED, &priv->status);
5661 return 0;
5662 }
5663
5664 modes = kzalloc(sizeof(struct ieee80211_hw_mode) * mode_count,
5665 GFP_KERNEL);
5666 if (!modes)
5667 return -ENOMEM;
5668
5669 channels = kzalloc(sizeof(struct ieee80211_channel) *
5670 priv->channel_count, GFP_KERNEL);
5671 if (!channels) {
5672 kfree(modes);
5673 return -ENOMEM;
5674 }
5675
5676 rates = kzalloc((sizeof(struct ieee80211_rate) * (IWL_MAX_RATES + 1)),
5677 GFP_KERNEL);
5678 if (!rates) {
5679 kfree(modes);
5680 kfree(channels);
5681 return -ENOMEM;
5682 }
5683
5684 /* 0 = 802.11a
5685 * 1 = 802.11b
5686 * 2 = 802.11g
5687 */
5688
5689 /* 5.2GHz channels start after the 2.4GHz channels */
5690 modes[A].mode = MODE_IEEE80211A;
5691 modes[A].channels = &channels[ARRAY_SIZE(iwl_eeprom_band_1)];
5692 modes[A].rates = rates;
5693 modes[A].num_rates = 8; /* just OFDM */
5694 modes[A].rates = &rates[4];
5695 modes[A].num_channels = 0;
5696
5697 modes[B].mode = MODE_IEEE80211B;
5698 modes[B].channels = channels;
5699 modes[B].rates = rates;
5700 modes[B].num_rates = 4; /* just CCK */
5701 modes[B].num_channels = 0;
5702
5703 modes[G].mode = MODE_IEEE80211G;
5704 modes[G].channels = channels;
5705 modes[G].rates = rates;
5706 modes[G].num_rates = 12; /* OFDM & CCK */
5707 modes[G].num_channels = 0;
5708
5709 modes[G_11N].mode = MODE_IEEE80211G;
5710 modes[G_11N].channels = channels;
5711 modes[G_11N].num_rates = 13; /* OFDM & CCK */
5712 modes[G_11N].rates = rates;
5713 modes[G_11N].num_channels = 0;
5714
5715 modes[A_11N].mode = MODE_IEEE80211A;
5716 modes[A_11N].channels = &channels[ARRAY_SIZE(iwl_eeprom_band_1)];
5717 modes[A_11N].rates = &rates[4];
5718 modes[A_11N].num_rates = 9; /* just OFDM */
5719 modes[A_11N].num_channels = 0;
5720
5721 priv->ieee_channels = channels;
5722 priv->ieee_rates = rates;
5723
5724 iwl_init_hw_rates(priv, rates);
5725
5726 for (i = 0, geo_ch = channels; i < priv->channel_count; i++) {
5727 ch = &priv->channel_info[i];
5728
5729 if (!is_channel_valid(ch)) {
5730 IWL_DEBUG_INFO("Channel %d [%sGHz] is restricted -- "
5731 "skipping.\n",
5732 ch->channel, is_channel_a_band(ch) ?
5733 "5.2" : "2.4");
5734 continue;
5735 }
5736
5737 if (is_channel_a_band(ch)) {
5738 geo_ch = &modes[A].channels[modes[A].num_channels++];
5739 modes[A_11N].num_channels++;
5740 } else {
5741 geo_ch = &modes[B].channels[modes[B].num_channels++];
5742 modes[G].num_channels++;
5743 modes[G_11N].num_channels++;
5744 }
5745
5746 geo_ch->freq = ieee80211chan2mhz(ch->channel);
5747 geo_ch->chan = ch->channel;
5748 geo_ch->power_level = ch->max_power_avg;
5749 geo_ch->antenna_max = 0xff;
5750
5751 if (is_channel_valid(ch)) {
5752 geo_ch->flag = IEEE80211_CHAN_W_SCAN;
5753 if (ch->flags & EEPROM_CHANNEL_IBSS)
5754 geo_ch->flag |= IEEE80211_CHAN_W_IBSS;
5755
5756 if (ch->flags & EEPROM_CHANNEL_ACTIVE)
5757 geo_ch->flag |= IEEE80211_CHAN_W_ACTIVE_SCAN;
5758
5759 if (ch->flags & EEPROM_CHANNEL_RADAR)
5760 geo_ch->flag |= IEEE80211_CHAN_W_RADAR_DETECT;
5761
5762 if (ch->max_power_avg > priv->max_channel_txpower_limit)
5763 priv->max_channel_txpower_limit =
5764 ch->max_power_avg;
5765 }
5766
5767 geo_ch->val = geo_ch->flag;
5768 }
5769
5770 if ((modes[A].num_channels == 0) && priv->is_abg) {
5771 printk(KERN_INFO DRV_NAME
5772 ": Incorrectly detected BG card as ABG. Please send "
5773 "your PCI ID 0x%04X:0x%04X to maintainer.\n",
5774 priv->pci_dev->device, priv->pci_dev->subsystem_device);
5775 priv->is_abg = 0;
5776 }
5777
5778 printk(KERN_INFO DRV_NAME
5779 ": Tunable channels: %d 802.11bg, %d 802.11a channels\n",
5780 modes[G].num_channels, modes[A].num_channels);
5781
5782 /*
5783 * NOTE: We register these in preference of order -- the
5784 * stack doesn't currently (as of 7.0.6 / Apr 24 '07) pick
5785 * a phymode based on rates or AP capabilities but seems to
5786 * configure it purely on if the channel being configured
5787 * is supported by a mode -- and the first match is taken
5788 */
5789
5790 if (modes[G].num_channels)
5791 ieee80211_register_hwmode(priv->hw, &modes[G]);
5792 if (modes[B].num_channels)
5793 ieee80211_register_hwmode(priv->hw, &modes[B]);
5794 if (modes[A].num_channels)
5795 ieee80211_register_hwmode(priv->hw, &modes[A]);
5796
5797 priv->modes = modes;
5798 set_bit(STATUS_GEO_CONFIGURED, &priv->status);
5799
5800 return 0;
5801 }
5802
5803 /******************************************************************************
5804 *
5805 * uCode download functions
5806 *
5807 ******************************************************************************/
5808
5809 static void iwl_dealloc_ucode_pci(struct iwl_priv *priv)
5810 {
5811 if (priv->ucode_code.v_addr != NULL) {
5812 pci_free_consistent(priv->pci_dev,
5813 priv->ucode_code.len,
5814 priv->ucode_code.v_addr,
5815 priv->ucode_code.p_addr);
5816 priv->ucode_code.v_addr = NULL;
5817 }
5818 if (priv->ucode_data.v_addr != NULL) {
5819 pci_free_consistent(priv->pci_dev,
5820 priv->ucode_data.len,
5821 priv->ucode_data.v_addr,
5822 priv->ucode_data.p_addr);
5823 priv->ucode_data.v_addr = NULL;
5824 }
5825 if (priv->ucode_data_backup.v_addr != NULL) {
5826 pci_free_consistent(priv->pci_dev,
5827 priv->ucode_data_backup.len,
5828 priv->ucode_data_backup.v_addr,
5829 priv->ucode_data_backup.p_addr);
5830 priv->ucode_data_backup.v_addr = NULL;
5831 }
5832 if (priv->ucode_init.v_addr != NULL) {
5833 pci_free_consistent(priv->pci_dev,
5834 priv->ucode_init.len,
5835 priv->ucode_init.v_addr,
5836 priv->ucode_init.p_addr);
5837 priv->ucode_init.v_addr = NULL;
5838 }
5839 if (priv->ucode_init_data.v_addr != NULL) {
5840 pci_free_consistent(priv->pci_dev,
5841 priv->ucode_init_data.len,
5842 priv->ucode_init_data.v_addr,
5843 priv->ucode_init_data.p_addr);
5844 priv->ucode_init_data.v_addr = NULL;
5845 }
5846 if (priv->ucode_boot.v_addr != NULL) {
5847 pci_free_consistent(priv->pci_dev,
5848 priv->ucode_boot.len,
5849 priv->ucode_boot.v_addr,
5850 priv->ucode_boot.p_addr);
5851 priv->ucode_boot.v_addr = NULL;
5852 }
5853 }
5854
5855 /**
5856 * iwl_verify_inst_full - verify runtime uCode image in card vs. host,
5857 * looking at all data.
5858 */
5859 static int iwl_verify_inst_full(struct iwl_priv *priv, __le32 * image, u32 len)
5860 {
5861 u32 val;
5862 u32 save_len = len;
5863 int rc = 0;
5864 u32 errcnt;
5865
5866 IWL_DEBUG_INFO("ucode inst image size is %u\n", len);
5867
5868 rc = iwl_grab_restricted_access(priv);
5869 if (rc)
5870 return rc;
5871
5872 iwl_write_restricted(priv, HBUS_TARG_MEM_RADDR, RTC_INST_LOWER_BOUND);
5873
5874 errcnt = 0;
5875 for (; len > 0; len -= sizeof(u32), image++) {
5876 /* read data comes through single port, auto-incr addr */
5877 /* NOTE: Use the debugless read so we don't flood kernel log
5878 * if IWL_DL_IO is set */
5879 val = _iwl_read_restricted(priv, HBUS_TARG_MEM_RDAT);
5880 if (val != le32_to_cpu(*image)) {
5881 IWL_ERROR("uCode INST section is invalid at "
5882 "offset 0x%x, is 0x%x, s/b 0x%x\n",
5883 save_len - len, val, le32_to_cpu(*image));
5884 rc = -EIO;
5885 errcnt++;
5886 if (errcnt >= 20)
5887 break;
5888 }
5889 }
5890
5891 iwl_release_restricted_access(priv);
5892
5893 if (!errcnt)
5894 IWL_DEBUG_INFO
5895 ("ucode image in INSTRUCTION memory is good\n");
5896
5897 return rc;
5898 }
5899
5900
5901 /**
5902 * iwl_verify_inst_sparse - verify runtime uCode image in card vs. host,
5903 * using sample data 100 bytes apart. If these sample points are good,
5904 * it's a pretty good bet that everything between them is good, too.
5905 */
5906 static int iwl_verify_inst_sparse(struct iwl_priv *priv, __le32 *image, u32 len)
5907 {
5908 u32 val;
5909 int rc = 0;
5910 u32 errcnt = 0;
5911 u32 i;
5912
5913 IWL_DEBUG_INFO("ucode inst image size is %u\n", len);
5914
5915 rc = iwl_grab_restricted_access(priv);
5916 if (rc)
5917 return rc;
5918
5919 for (i = 0; i < len; i += 100, image += 100/sizeof(u32)) {
5920 /* read data comes through single port, auto-incr addr */
5921 /* NOTE: Use the debugless read so we don't flood kernel log
5922 * if IWL_DL_IO is set */
5923 iwl_write_restricted(priv, HBUS_TARG_MEM_RADDR,
5924 i + RTC_INST_LOWER_BOUND);
5925 val = _iwl_read_restricted(priv, HBUS_TARG_MEM_RDAT);
5926 if (val != le32_to_cpu(*image)) {
5927 #if 0 /* Enable this if you want to see details */
5928 IWL_ERROR("uCode INST section is invalid at "
5929 "offset 0x%x, is 0x%x, s/b 0x%x\n",
5930 i, val, *image);
5931 #endif
5932 rc = -EIO;
5933 errcnt++;
5934 if (errcnt >= 3)
5935 break;
5936 }
5937 }
5938
5939 iwl_release_restricted_access(priv);
5940
5941 return rc;
5942 }
5943
5944
5945 /**
5946 * iwl_verify_ucode - determine which instruction image is in SRAM,
5947 * and verify its contents
5948 */
5949 static int iwl_verify_ucode(struct iwl_priv *priv)
5950 {
5951 __le32 *image;
5952 u32 len;
5953 int rc = 0;
5954
5955 /* Try bootstrap */
5956 image = (__le32 *)priv->ucode_boot.v_addr;
5957 len = priv->ucode_boot.len;
5958 rc = iwl_verify_inst_sparse(priv, image, len);
5959 if (rc == 0) {
5960 IWL_DEBUG_INFO("Bootstrap uCode is good in inst SRAM\n");
5961 return 0;
5962 }
5963
5964 /* Try initialize */
5965 image = (__le32 *)priv->ucode_init.v_addr;
5966 len = priv->ucode_init.len;
5967 rc = iwl_verify_inst_sparse(priv, image, len);
5968 if (rc == 0) {
5969 IWL_DEBUG_INFO("Initialize uCode is good in inst SRAM\n");
5970 return 0;
5971 }
5972
5973 /* Try runtime/protocol */
5974 image = (__le32 *)priv->ucode_code.v_addr;
5975 len = priv->ucode_code.len;
5976 rc = iwl_verify_inst_sparse(priv, image, len);
5977 if (rc == 0) {
5978 IWL_DEBUG_INFO("Runtime uCode is good in inst SRAM\n");
5979 return 0;
5980 }
5981
5982 IWL_ERROR("NO VALID UCODE IMAGE IN INSTRUCTION SRAM!!\n");
5983
5984 /* Show first several data entries in instruction SRAM.
5985 * Selection of bootstrap image is arbitrary. */
5986 image = (__le32 *)priv->ucode_boot.v_addr;
5987 len = priv->ucode_boot.len;
5988 rc = iwl_verify_inst_full(priv, image, len);
5989
5990 return rc;
5991 }
5992
5993
5994 /* check contents of special bootstrap uCode SRAM */
5995 static int iwl_verify_bsm(struct iwl_priv *priv)
5996 {
5997 __le32 *image = priv->ucode_boot.v_addr;
5998 u32 len = priv->ucode_boot.len;
5999 u32 reg;
6000 u32 val;
6001
6002 IWL_DEBUG_INFO("Begin verify bsm\n");
6003
6004 /* verify BSM SRAM contents */
6005 val = iwl_read_restricted_reg(priv, BSM_WR_DWCOUNT_REG);
6006 for (reg = BSM_SRAM_LOWER_BOUND;
6007 reg < BSM_SRAM_LOWER_BOUND + len;
6008 reg += sizeof(u32), image ++) {
6009 val = iwl_read_restricted_reg(priv, reg);
6010 if (val != le32_to_cpu(*image)) {
6011 IWL_ERROR("BSM uCode verification failed at "
6012 "addr 0x%08X+%u (of %u), is 0x%x, s/b 0x%x\n",
6013 BSM_SRAM_LOWER_BOUND,
6014 reg - BSM_SRAM_LOWER_BOUND, len,
6015 val, le32_to_cpu(*image));
6016 return -EIO;
6017 }
6018 }
6019
6020 IWL_DEBUG_INFO("BSM bootstrap uCode image OK\n");
6021
6022 return 0;
6023 }
6024
6025 /**
6026 * iwl_load_bsm - Load bootstrap instructions
6027 *
6028 * BSM operation:
6029 *
6030 * The Bootstrap State Machine (BSM) stores a short bootstrap uCode program
6031 * in special SRAM that does not power down during RFKILL. When powering back
6032 * up after power-saving sleeps (or during initial uCode load), the BSM loads
6033 * the bootstrap program into the on-board processor, and starts it.
6034 *
6035 * The bootstrap program loads (via DMA) instructions and data for a new
6036 * program from host DRAM locations indicated by the host driver in the
6037 * BSM_DRAM_* registers. Once the new program is loaded, it starts
6038 * automatically.
6039 *
6040 * When initializing the NIC, the host driver points the BSM to the
6041 * "initialize" uCode image. This uCode sets up some internal data, then
6042 * notifies host via "initialize alive" that it is complete.
6043 *
6044 * The host then replaces the BSM_DRAM_* pointer values to point to the
6045 * normal runtime uCode instructions and a backup uCode data cache buffer
6046 * (filled initially with starting data values for the on-board processor),
6047 * then triggers the "initialize" uCode to load and launch the runtime uCode,
6048 * which begins normal operation.
6049 *
6050 * When doing a power-save shutdown, runtime uCode saves data SRAM into
6051 * the backup data cache in DRAM before SRAM is powered down.
6052 *
6053 * When powering back up, the BSM loads the bootstrap program. This reloads
6054 * the runtime uCode instructions and the backup data cache into SRAM,
6055 * and re-launches the runtime uCode from where it left off.
6056 */
6057 static int iwl_load_bsm(struct iwl_priv *priv)
6058 {
6059 __le32 *image = priv->ucode_boot.v_addr;
6060 u32 len = priv->ucode_boot.len;
6061 dma_addr_t pinst;
6062 dma_addr_t pdata;
6063 u32 inst_len;
6064 u32 data_len;
6065 int rc;
6066 int i;
6067 u32 done;
6068 u32 reg_offset;
6069
6070 IWL_DEBUG_INFO("Begin load bsm\n");
6071
6072 /* make sure bootstrap program is no larger than BSM's SRAM size */
6073 if (len > IWL_MAX_BSM_SIZE)
6074 return -EINVAL;
6075
6076 /* Tell bootstrap uCode where to find the "Initialize" uCode
6077 * in host DRAM ... bits 31:0 for 3945, bits 35:4 for 4965.
6078 * NOTE: iwl_initialize_alive_start() will replace these values,
6079 * after the "initialize" uCode has run, to point to
6080 * runtime/protocol instructions and backup data cache. */
6081 pinst = priv->ucode_init.p_addr >> 4;
6082 pdata = priv->ucode_init_data.p_addr >> 4;
6083 inst_len = priv->ucode_init.len;
6084 data_len = priv->ucode_init_data.len;
6085
6086 rc = iwl_grab_restricted_access(priv);
6087 if (rc)
6088 return rc;
6089
6090 iwl_write_restricted_reg(priv, BSM_DRAM_INST_PTR_REG, pinst);
6091 iwl_write_restricted_reg(priv, BSM_DRAM_DATA_PTR_REG, pdata);
6092 iwl_write_restricted_reg(priv, BSM_DRAM_INST_BYTECOUNT_REG, inst_len);
6093 iwl_write_restricted_reg(priv, BSM_DRAM_DATA_BYTECOUNT_REG, data_len);
6094
6095 /* Fill BSM memory with bootstrap instructions */
6096 for (reg_offset = BSM_SRAM_LOWER_BOUND;
6097 reg_offset < BSM_SRAM_LOWER_BOUND + len;
6098 reg_offset += sizeof(u32), image++)
6099 _iwl_write_restricted_reg(priv, reg_offset,
6100 le32_to_cpu(*image));
6101
6102 rc = iwl_verify_bsm(priv);
6103 if (rc) {
6104 iwl_release_restricted_access(priv);
6105 return rc;
6106 }
6107
6108 /* Tell BSM to copy from BSM SRAM into instruction SRAM, when asked */
6109 iwl_write_restricted_reg(priv, BSM_WR_MEM_SRC_REG, 0x0);
6110 iwl_write_restricted_reg(priv, BSM_WR_MEM_DST_REG,
6111 RTC_INST_LOWER_BOUND);
6112 iwl_write_restricted_reg(priv, BSM_WR_DWCOUNT_REG, len / sizeof(u32));
6113
6114 /* Load bootstrap code into instruction SRAM now,
6115 * to prepare to load "initialize" uCode */
6116 iwl_write_restricted_reg(priv, BSM_WR_CTRL_REG,
6117 BSM_WR_CTRL_REG_BIT_START);
6118
6119 /* Wait for load of bootstrap uCode to finish */
6120 for (i = 0; i < 100; i++) {
6121 done = iwl_read_restricted_reg(priv, BSM_WR_CTRL_REG);
6122 if (!(done & BSM_WR_CTRL_REG_BIT_START))
6123 break;
6124 udelay(10);
6125 }
6126 if (i < 100)
6127 IWL_DEBUG_INFO("BSM write complete, poll %d iterations\n", i);
6128 else {
6129 IWL_ERROR("BSM write did not complete!\n");
6130 return -EIO;
6131 }
6132
6133 /* Enable future boot loads whenever power management unit triggers it
6134 * (e.g. when powering back up after power-save shutdown) */
6135 iwl_write_restricted_reg(priv, BSM_WR_CTRL_REG,
6136 BSM_WR_CTRL_REG_BIT_START_EN);
6137
6138 iwl_release_restricted_access(priv);
6139
6140 return 0;
6141 }
6142
6143 static void iwl_nic_start(struct iwl_priv *priv)
6144 {
6145 /* Remove all resets to allow NIC to operate */
6146 iwl_write32(priv, CSR_RESET, 0);
6147 }
6148
6149 /**
6150 * iwl_read_ucode - Read uCode images from disk file.
6151 *
6152 * Copy into buffers for card to fetch via bus-mastering
6153 */
6154 static int iwl_read_ucode(struct iwl_priv *priv)
6155 {
6156 struct iwl_ucode *ucode;
6157 int rc = 0;
6158 const struct firmware *ucode_raw;
6159 const char *name = "iwlwifi-4965" IWL4965_UCODE_API ".ucode";
6160 u8 *src;
6161 size_t len;
6162 u32 ver, inst_size, data_size, init_size, init_data_size, boot_size;
6163
6164 /* Ask kernel firmware_class module to get the boot firmware off disk.
6165 * request_firmware() is synchronous, file is in memory on return. */
6166 rc = request_firmware(&ucode_raw, name, &priv->pci_dev->dev);
6167 if (rc < 0) {
6168 IWL_ERROR("%s firmware file req failed: Reason %d\n", name, rc);
6169 goto error;
6170 }
6171
6172 IWL_DEBUG_INFO("Got firmware '%s' file (%zd bytes) from disk\n",
6173 name, ucode_raw->size);
6174
6175 /* Make sure that we got at least our header! */
6176 if (ucode_raw->size < sizeof(*ucode)) {
6177 IWL_ERROR("File size way too small!\n");
6178 rc = -EINVAL;
6179 goto err_release;
6180 }
6181
6182 /* Data from ucode file: header followed by uCode images */
6183 ucode = (void *)ucode_raw->data;
6184
6185 ver = le32_to_cpu(ucode->ver);
6186 inst_size = le32_to_cpu(ucode->inst_size);
6187 data_size = le32_to_cpu(ucode->data_size);
6188 init_size = le32_to_cpu(ucode->init_size);
6189 init_data_size = le32_to_cpu(ucode->init_data_size);
6190 boot_size = le32_to_cpu(ucode->boot_size);
6191
6192 IWL_DEBUG_INFO("f/w package hdr ucode version = 0x%x\n", ver);
6193 IWL_DEBUG_INFO("f/w package hdr runtime inst size = %u\n",
6194 inst_size);
6195 IWL_DEBUG_INFO("f/w package hdr runtime data size = %u\n",
6196 data_size);
6197 IWL_DEBUG_INFO("f/w package hdr init inst size = %u\n",
6198 init_size);
6199 IWL_DEBUG_INFO("f/w package hdr init data size = %u\n",
6200 init_data_size);
6201 IWL_DEBUG_INFO("f/w package hdr boot inst size = %u\n",
6202 boot_size);
6203
6204 /* Verify size of file vs. image size info in file's header */
6205 if (ucode_raw->size < sizeof(*ucode) +
6206 inst_size + data_size + init_size +
6207 init_data_size + boot_size) {
6208
6209 IWL_DEBUG_INFO("uCode file size %d too small\n",
6210 (int)ucode_raw->size);
6211 rc = -EINVAL;
6212 goto err_release;
6213 }
6214
6215 /* Verify that uCode images will fit in card's SRAM */
6216 if (inst_size > IWL_MAX_INST_SIZE) {
6217 IWL_DEBUG_INFO("uCode instr len %d too large to fit in card\n",
6218 (int)inst_size);
6219 rc = -EINVAL;
6220 goto err_release;
6221 }
6222
6223 if (data_size > IWL_MAX_DATA_SIZE) {
6224 IWL_DEBUG_INFO("uCode data len %d too large to fit in card\n",
6225 (int)data_size);
6226 rc = -EINVAL;
6227 goto err_release;
6228 }
6229 if (init_size > IWL_MAX_INST_SIZE) {
6230 IWL_DEBUG_INFO
6231 ("uCode init instr len %d too large to fit in card\n",
6232 (int)init_size);
6233 rc = -EINVAL;
6234 goto err_release;
6235 }
6236 if (init_data_size > IWL_MAX_DATA_SIZE) {
6237 IWL_DEBUG_INFO
6238 ("uCode init data len %d too large to fit in card\n",
6239 (int)init_data_size);
6240 rc = -EINVAL;
6241 goto err_release;
6242 }
6243 if (boot_size > IWL_MAX_BSM_SIZE) {
6244 IWL_DEBUG_INFO
6245 ("uCode boot instr len %d too large to fit in bsm\n",
6246 (int)boot_size);
6247 rc = -EINVAL;
6248 goto err_release;
6249 }
6250
6251 /* Allocate ucode buffers for card's bus-master loading ... */
6252
6253 /* Runtime instructions and 2 copies of data:
6254 * 1) unmodified from disk
6255 * 2) backup cache for save/restore during power-downs */
6256 priv->ucode_code.len = inst_size;
6257 priv->ucode_code.v_addr =
6258 pci_alloc_consistent(priv->pci_dev,
6259 priv->ucode_code.len,
6260 &(priv->ucode_code.p_addr));
6261
6262 priv->ucode_data.len = data_size;
6263 priv->ucode_data.v_addr =
6264 pci_alloc_consistent(priv->pci_dev,
6265 priv->ucode_data.len,
6266 &(priv->ucode_data.p_addr));
6267
6268 priv->ucode_data_backup.len = data_size;
6269 priv->ucode_data_backup.v_addr =
6270 pci_alloc_consistent(priv->pci_dev,
6271 priv->ucode_data_backup.len,
6272 &(priv->ucode_data_backup.p_addr));
6273
6274
6275 /* Initialization instructions and data */
6276 priv->ucode_init.len = init_size;
6277 priv->ucode_init.v_addr =
6278 pci_alloc_consistent(priv->pci_dev,
6279 priv->ucode_init.len,
6280 &(priv->ucode_init.p_addr));
6281
6282 priv->ucode_init_data.len = init_data_size;
6283 priv->ucode_init_data.v_addr =
6284 pci_alloc_consistent(priv->pci_dev,
6285 priv->ucode_init_data.len,
6286 &(priv->ucode_init_data.p_addr));
6287
6288 /* Bootstrap (instructions only, no data) */
6289 priv->ucode_boot.len = boot_size;
6290 priv->ucode_boot.v_addr =
6291 pci_alloc_consistent(priv->pci_dev,
6292 priv->ucode_boot.len,
6293 &(priv->ucode_boot.p_addr));
6294
6295 if (!priv->ucode_code.v_addr || !priv->ucode_data.v_addr ||
6296 !priv->ucode_init.v_addr || !priv->ucode_init_data.v_addr ||
6297 !priv->ucode_boot.v_addr || !priv->ucode_data_backup.v_addr)
6298 goto err_pci_alloc;
6299
6300 /* Copy images into buffers for card's bus-master reads ... */
6301
6302 /* Runtime instructions (first block of data in file) */
6303 src = &ucode->data[0];
6304 len = priv->ucode_code.len;
6305 IWL_DEBUG_INFO("Copying (but not loading) uCode instr len %d\n",
6306 (int)len);
6307 memcpy(priv->ucode_code.v_addr, src, len);
6308 IWL_DEBUG_INFO("uCode instr buf vaddr = 0x%p, paddr = 0x%08x\n",
6309 priv->ucode_code.v_addr, (u32)priv->ucode_code.p_addr);
6310
6311 /* Runtime data (2nd block)
6312 * NOTE: Copy into backup buffer will be done in iwl_up() */
6313 src = &ucode->data[inst_size];
6314 len = priv->ucode_data.len;
6315 IWL_DEBUG_INFO("Copying (but not loading) uCode data len %d\n",
6316 (int)len);
6317 memcpy(priv->ucode_data.v_addr, src, len);
6318 memcpy(priv->ucode_data_backup.v_addr, src, len);
6319
6320 /* Initialization instructions (3rd block) */
6321 if (init_size) {
6322 src = &ucode->data[inst_size + data_size];
6323 len = priv->ucode_init.len;
6324 IWL_DEBUG_INFO("Copying (but not loading) init instr len %d\n",
6325 (int)len);
6326 memcpy(priv->ucode_init.v_addr, src, len);
6327 }
6328
6329 /* Initialization data (4th block) */
6330 if (init_data_size) {
6331 src = &ucode->data[inst_size + data_size + init_size];
6332 len = priv->ucode_init_data.len;
6333 IWL_DEBUG_INFO("Copying (but not loading) init data len %d\n",
6334 (int)len);
6335 memcpy(priv->ucode_init_data.v_addr, src, len);
6336 }
6337
6338 /* Bootstrap instructions (5th block) */
6339 src = &ucode->data[inst_size + data_size + init_size + init_data_size];
6340 len = priv->ucode_boot.len;
6341 IWL_DEBUG_INFO("Copying (but not loading) boot instr len %d\n",
6342 (int)len);
6343 memcpy(priv->ucode_boot.v_addr, src, len);
6344
6345 /* We have our copies now, allow OS release its copies */
6346 release_firmware(ucode_raw);
6347 return 0;
6348
6349 err_pci_alloc:
6350 IWL_ERROR("failed to allocate pci memory\n");
6351 rc = -ENOMEM;
6352 iwl_dealloc_ucode_pci(priv);
6353
6354 err_release:
6355 release_firmware(ucode_raw);
6356
6357 error:
6358 return rc;
6359 }
6360
6361
6362 /**
6363 * iwl_set_ucode_ptrs - Set uCode address location
6364 *
6365 * Tell initialization uCode where to find runtime uCode.
6366 *
6367 * BSM registers initially contain pointers to initialization uCode.
6368 * We need to replace them to load runtime uCode inst and data,
6369 * and to save runtime data when powering down.
6370 */
6371 static int iwl_set_ucode_ptrs(struct iwl_priv *priv)
6372 {
6373 dma_addr_t pinst;
6374 dma_addr_t pdata;
6375 int rc = 0;
6376 unsigned long flags;
6377
6378 /* bits 35:4 for 4965 */
6379 pinst = priv->ucode_code.p_addr >> 4;
6380 pdata = priv->ucode_data_backup.p_addr >> 4;
6381
6382 spin_lock_irqsave(&priv->lock, flags);
6383 rc = iwl_grab_restricted_access(priv);
6384 if (rc) {
6385 spin_unlock_irqrestore(&priv->lock, flags);
6386 return rc;
6387 }
6388
6389 /* Tell bootstrap uCode where to find image to load */
6390 iwl_write_restricted_reg(priv, BSM_DRAM_INST_PTR_REG, pinst);
6391 iwl_write_restricted_reg(priv, BSM_DRAM_DATA_PTR_REG, pdata);
6392 iwl_write_restricted_reg(priv, BSM_DRAM_DATA_BYTECOUNT_REG,
6393 priv->ucode_data.len);
6394
6395 /* Inst bytecount must be last to set up, bit 31 signals uCode
6396 * that all new ptr/size info is in place */
6397 iwl_write_restricted_reg(priv, BSM_DRAM_INST_BYTECOUNT_REG,
6398 priv->ucode_code.len | BSM_DRAM_INST_LOAD);
6399
6400 iwl_release_restricted_access(priv);
6401
6402 spin_unlock_irqrestore(&priv->lock, flags);
6403
6404 IWL_DEBUG_INFO("Runtime uCode pointers are set.\n");
6405
6406 return rc;
6407 }
6408
6409 /**
6410 * iwl_init_alive_start - Called after REPLY_ALIVE notification receieved
6411 *
6412 * Called after REPLY_ALIVE notification received from "initialize" uCode.
6413 *
6414 * The 4965 "initialize" ALIVE reply contains calibration data for:
6415 * Voltage, temperature, and MIMO tx gain correction, now stored in priv
6416 * (3945 does not contain this data).
6417 *
6418 * Tell "initialize" uCode to go ahead and load the runtime uCode.
6419 */
6420 static void iwl_init_alive_start(struct iwl_priv *priv)
6421 {
6422 /* Check alive response for "valid" sign from uCode */
6423 if (priv->card_alive_init.is_valid != UCODE_VALID_OK) {
6424 /* We had an error bringing up the hardware, so take it
6425 * all the way back down so we can try again */
6426 IWL_DEBUG_INFO("Initialize Alive failed.\n");
6427 goto restart;
6428 }
6429
6430 /* Bootstrap uCode has loaded initialize uCode ... verify inst image.
6431 * This is a paranoid check, because we would not have gotten the
6432 * "initialize" alive if code weren't properly loaded. */
6433 if (iwl_verify_ucode(priv)) {
6434 /* Runtime instruction load was bad;
6435 * take it all the way back down so we can try again */
6436 IWL_DEBUG_INFO("Bad \"initialize\" uCode load.\n");
6437 goto restart;
6438 }
6439
6440 /* Calculate temperature */
6441 priv->temperature = iwl4965_get_temperature(priv);
6442
6443 /* Send pointers to protocol/runtime uCode image ... init code will
6444 * load and launch runtime uCode, which will send us another "Alive"
6445 * notification. */
6446 IWL_DEBUG_INFO("Initialization Alive received.\n");
6447 if (iwl_set_ucode_ptrs(priv)) {
6448 /* Runtime instruction load won't happen;
6449 * take it all the way back down so we can try again */
6450 IWL_DEBUG_INFO("Couldn't set up uCode pointers.\n");
6451 goto restart;
6452 }
6453 return;
6454
6455 restart:
6456 queue_work(priv->workqueue, &priv->restart);
6457 }
6458
6459
6460 /**
6461 * iwl_alive_start - called after REPLY_ALIVE notification received
6462 * from protocol/runtime uCode (initialization uCode's
6463 * Alive gets handled by iwl_init_alive_start()).
6464 */
6465 static void iwl_alive_start(struct iwl_priv *priv)
6466 {
6467 int rc = 0;
6468
6469 IWL_DEBUG_INFO("Runtime Alive received.\n");
6470
6471 if (priv->card_alive.is_valid != UCODE_VALID_OK) {
6472 /* We had an error bringing up the hardware, so take it
6473 * all the way back down so we can try again */
6474 IWL_DEBUG_INFO("Alive failed.\n");
6475 goto restart;
6476 }
6477
6478 /* Initialize uCode has loaded Runtime uCode ... verify inst image.
6479 * This is a paranoid check, because we would not have gotten the
6480 * "runtime" alive if code weren't properly loaded. */
6481 if (iwl_verify_ucode(priv)) {
6482 /* Runtime instruction load was bad;
6483 * take it all the way back down so we can try again */
6484 IWL_DEBUG_INFO("Bad runtime uCode load.\n");
6485 goto restart;
6486 }
6487
6488 iwl_clear_stations_table(priv);
6489
6490 rc = iwl4965_alive_notify(priv);
6491 if (rc) {
6492 IWL_WARNING("Could not complete ALIVE transition [ntf]: %d\n",
6493 rc);
6494 goto restart;
6495 }
6496
6497 /* After the ALIVE response, we can process host commands */
6498 set_bit(STATUS_ALIVE, &priv->status);
6499
6500 /* Clear out the uCode error bit if it is set */
6501 clear_bit(STATUS_FW_ERROR, &priv->status);
6502
6503 rc = iwl_init_channel_map(priv);
6504 if (rc) {
6505 IWL_ERROR("initializing regulatory failed: %d\n", rc);
6506 return;
6507 }
6508
6509 iwl_init_geos(priv);
6510
6511 if (iwl_is_rfkill(priv))
6512 return;
6513
6514 if (!priv->mac80211_registered) {
6515 /* Unlock so any user space entry points can call back into
6516 * the driver without a deadlock... */
6517 mutex_unlock(&priv->mutex);
6518 iwl_rate_control_register(priv->hw);
6519 rc = ieee80211_register_hw(priv->hw);
6520 priv->hw->conf.beacon_int = 100;
6521 mutex_lock(&priv->mutex);
6522
6523 if (rc) {
6524 IWL_ERROR("Failed to register network "
6525 "device (error %d)\n", rc);
6526 return;
6527 }
6528
6529 priv->mac80211_registered = 1;
6530
6531 iwl_reset_channel_flag(priv);
6532 } else
6533 ieee80211_start_queues(priv->hw);
6534
6535 priv->active_rate = priv->rates_mask;
6536 priv->active_rate_basic = priv->rates_mask & IWL_BASIC_RATES_MASK;
6537
6538 iwl_send_power_mode(priv, IWL_POWER_LEVEL(priv->power_mode));
6539
6540 if (iwl_is_associated(priv)) {
6541 struct iwl_rxon_cmd *active_rxon =
6542 (struct iwl_rxon_cmd *)(&priv->active_rxon);
6543
6544 memcpy(&priv->staging_rxon, &priv->active_rxon,
6545 sizeof(priv->staging_rxon));
6546 active_rxon->filter_flags &= ~RXON_FILTER_ASSOC_MSK;
6547 } else {
6548 /* Initialize our rx_config data */
6549 iwl_connection_init_rx_config(priv);
6550 memcpy(priv->staging_rxon.node_addr, priv->mac_addr, ETH_ALEN);
6551 }
6552
6553 /* Configure BT coexistence */
6554 iwl_send_bt_config(priv);
6555
6556 /* Configure the adapter for unassociated operation */
6557 iwl_commit_rxon(priv);
6558
6559 /* At this point, the NIC is initialized and operational */
6560 priv->notif_missed_beacons = 0;
6561 set_bit(STATUS_READY, &priv->status);
6562
6563 iwl4965_rf_kill_ct_config(priv);
6564 IWL_DEBUG_INFO("ALIVE processing complete.\n");
6565
6566 if (priv->error_recovering)
6567 iwl_error_recovery(priv);
6568
6569 return;
6570
6571 restart:
6572 queue_work(priv->workqueue, &priv->restart);
6573 }
6574
6575 static void iwl_cancel_deferred_work(struct iwl_priv *priv);
6576
6577 static void __iwl_down(struct iwl_priv *priv)
6578 {
6579 unsigned long flags;
6580 int exit_pending = test_bit(STATUS_EXIT_PENDING, &priv->status);
6581 struct ieee80211_conf *conf = NULL;
6582
6583 IWL_DEBUG_INFO(DRV_NAME " is going down\n");
6584
6585 conf = ieee80211_get_hw_conf(priv->hw);
6586
6587 if (!exit_pending)
6588 set_bit(STATUS_EXIT_PENDING, &priv->status);
6589
6590 iwl_clear_stations_table(priv);
6591
6592 /* Unblock any waiting calls */
6593 wake_up_interruptible_all(&priv->wait_command_queue);
6594
6595 iwl_cancel_deferred_work(priv);
6596
6597 /* Wipe out the EXIT_PENDING status bit if we are not actually
6598 * exiting the module */
6599 if (!exit_pending)
6600 clear_bit(STATUS_EXIT_PENDING, &priv->status);
6601
6602 /* stop and reset the on-board processor */
6603 iwl_write32(priv, CSR_RESET, CSR_RESET_REG_FLAG_NEVO_RESET);
6604
6605 /* tell the device to stop sending interrupts */
6606 iwl_disable_interrupts(priv);
6607
6608 if (priv->mac80211_registered)
6609 ieee80211_stop_queues(priv->hw);
6610
6611 /* If we have not previously called iwl_init() then
6612 * clear all bits but the RF Kill and SUSPEND bits and return */
6613 if (!iwl_is_init(priv)) {
6614 priv->status = test_bit(STATUS_RF_KILL_HW, &priv->status) <<
6615 STATUS_RF_KILL_HW |
6616 test_bit(STATUS_RF_KILL_SW, &priv->status) <<
6617 STATUS_RF_KILL_SW |
6618 test_bit(STATUS_IN_SUSPEND, &priv->status) <<
6619 STATUS_IN_SUSPEND;
6620 goto exit;
6621 }
6622
6623 /* ...otherwise clear out all the status bits but the RF Kill and
6624 * SUSPEND bits and continue taking the NIC down. */
6625 priv->status &= test_bit(STATUS_RF_KILL_HW, &priv->status) <<
6626 STATUS_RF_KILL_HW |
6627 test_bit(STATUS_RF_KILL_SW, &priv->status) <<
6628 STATUS_RF_KILL_SW |
6629 test_bit(STATUS_IN_SUSPEND, &priv->status) <<
6630 STATUS_IN_SUSPEND |
6631 test_bit(STATUS_FW_ERROR, &priv->status) <<
6632 STATUS_FW_ERROR;
6633
6634 spin_lock_irqsave(&priv->lock, flags);
6635 iwl_clear_bit(priv, CSR_GP_CNTRL, CSR_GP_CNTRL_REG_FLAG_MAC_ACCESS_REQ);
6636 spin_unlock_irqrestore(&priv->lock, flags);
6637
6638 iwl_hw_txq_ctx_stop(priv);
6639 iwl_hw_rxq_stop(priv);
6640
6641 spin_lock_irqsave(&priv->lock, flags);
6642 if (!iwl_grab_restricted_access(priv)) {
6643 iwl_write_restricted_reg(priv, APMG_CLK_DIS_REG,
6644 APMG_CLK_VAL_DMA_CLK_RQT);
6645 iwl_release_restricted_access(priv);
6646 }
6647 spin_unlock_irqrestore(&priv->lock, flags);
6648
6649 udelay(5);
6650
6651 iwl_hw_nic_stop_master(priv);
6652 iwl_set_bit(priv, CSR_RESET, CSR_RESET_REG_FLAG_SW_RESET);
6653 iwl_hw_nic_reset(priv);
6654
6655 exit:
6656 memset(&priv->card_alive, 0, sizeof(struct iwl_alive_resp));
6657
6658 if (priv->ibss_beacon)
6659 dev_kfree_skb(priv->ibss_beacon);
6660 priv->ibss_beacon = NULL;
6661
6662 /* clear out any free frames */
6663 iwl_clear_free_frames(priv);
6664 }
6665
6666 static void iwl_down(struct iwl_priv *priv)
6667 {
6668 mutex_lock(&priv->mutex);
6669 __iwl_down(priv);
6670 mutex_unlock(&priv->mutex);
6671 }
6672
6673 #define MAX_HW_RESTARTS 5
6674
6675 static int __iwl_up(struct iwl_priv *priv)
6676 {
6677 DECLARE_MAC_BUF(mac);
6678 int rc, i;
6679 u32 hw_rf_kill = 0;
6680
6681 if (test_bit(STATUS_EXIT_PENDING, &priv->status)) {
6682 IWL_WARNING("Exit pending; will not bring the NIC up\n");
6683 return -EIO;
6684 }
6685
6686 if (test_bit(STATUS_RF_KILL_SW, &priv->status)) {
6687 IWL_WARNING("Radio disabled by SW RF kill (module "
6688 "parameter)\n");
6689 return 0;
6690 }
6691
6692 iwl_write32(priv, CSR_INT, 0xFFFFFFFF);
6693
6694 rc = iwl_hw_nic_init(priv);
6695 if (rc) {
6696 IWL_ERROR("Unable to int nic\n");
6697 return rc;
6698 }
6699
6700 /* make sure rfkill handshake bits are cleared */
6701 iwl_write32(priv, CSR_UCODE_DRV_GP1_CLR, CSR_UCODE_SW_BIT_RFKILL);
6702 iwl_write32(priv, CSR_UCODE_DRV_GP1_CLR,
6703 CSR_UCODE_DRV_GP1_BIT_CMD_BLOCKED);
6704
6705 /* clear (again), then enable host interrupts */
6706 iwl_write32(priv, CSR_INT, 0xFFFFFFFF);
6707 iwl_enable_interrupts(priv);
6708
6709 /* really make sure rfkill handshake bits are cleared */
6710 iwl_write32(priv, CSR_UCODE_DRV_GP1_CLR, CSR_UCODE_SW_BIT_RFKILL);
6711 iwl_write32(priv, CSR_UCODE_DRV_GP1_CLR, CSR_UCODE_SW_BIT_RFKILL);
6712
6713 /* Copy original ucode data image from disk into backup cache.
6714 * This will be used to initialize the on-board processor's
6715 * data SRAM for a clean start when the runtime program first loads. */
6716 memcpy(priv->ucode_data_backup.v_addr, priv->ucode_data.v_addr,
6717 priv->ucode_data.len);
6718
6719 /* If platform's RF_KILL switch is set to KILL,
6720 * wait for BIT_INT_RF_KILL interrupt before loading uCode
6721 * and getting things started */
6722 if (!(iwl_read32(priv, CSR_GP_CNTRL) &
6723 CSR_GP_CNTRL_REG_FLAG_HW_RF_KILL_SW))
6724 hw_rf_kill = 1;
6725
6726 if (test_bit(STATUS_RF_KILL_HW, &priv->status) || hw_rf_kill) {
6727 IWL_WARNING("Radio disabled by HW RF Kill switch\n");
6728 return 0;
6729 }
6730
6731 for (i = 0; i < MAX_HW_RESTARTS; i++) {
6732
6733 iwl_clear_stations_table(priv);
6734
6735 /* load bootstrap state machine,
6736 * load bootstrap program into processor's memory,
6737 * prepare to load the "initialize" uCode */
6738 rc = iwl_load_bsm(priv);
6739
6740 if (rc) {
6741 IWL_ERROR("Unable to set up bootstrap uCode: %d\n", rc);
6742 continue;
6743 }
6744
6745 /* start card; "initialize" will load runtime ucode */
6746 iwl_nic_start(priv);
6747
6748 /* MAC Address location in EEPROM same for 3945/4965 */
6749 get_eeprom_mac(priv, priv->mac_addr);
6750 IWL_DEBUG_INFO("MAC address: %s\n",
6751 print_mac(mac, priv->mac_addr));
6752
6753 SET_IEEE80211_PERM_ADDR(priv->hw, priv->mac_addr);
6754
6755 IWL_DEBUG_INFO(DRV_NAME " is coming up\n");
6756
6757 return 0;
6758 }
6759
6760 set_bit(STATUS_EXIT_PENDING, &priv->status);
6761 __iwl_down(priv);
6762
6763 /* tried to restart and config the device for as long as our
6764 * patience could withstand */
6765 IWL_ERROR("Unable to initialize device after %d attempts.\n", i);
6766 return -EIO;
6767 }
6768
6769
6770 /*****************************************************************************
6771 *
6772 * Workqueue callbacks
6773 *
6774 *****************************************************************************/
6775
6776 static void iwl_bg_init_alive_start(struct work_struct *data)
6777 {
6778 struct iwl_priv *priv =
6779 container_of(data, struct iwl_priv, init_alive_start.work);
6780
6781 if (test_bit(STATUS_EXIT_PENDING, &priv->status))
6782 return;
6783
6784 mutex_lock(&priv->mutex);
6785 iwl_init_alive_start(priv);
6786 mutex_unlock(&priv->mutex);
6787 }
6788
6789 static void iwl_bg_alive_start(struct work_struct *data)
6790 {
6791 struct iwl_priv *priv =
6792 container_of(data, struct iwl_priv, alive_start.work);
6793
6794 if (test_bit(STATUS_EXIT_PENDING, &priv->status))
6795 return;
6796
6797 mutex_lock(&priv->mutex);
6798 iwl_alive_start(priv);
6799 mutex_unlock(&priv->mutex);
6800 }
6801
6802 static void iwl_bg_rf_kill(struct work_struct *work)
6803 {
6804 struct iwl_priv *priv = container_of(work, struct iwl_priv, rf_kill);
6805
6806 wake_up_interruptible(&priv->wait_command_queue);
6807
6808 if (test_bit(STATUS_EXIT_PENDING, &priv->status))
6809 return;
6810
6811 mutex_lock(&priv->mutex);
6812
6813 if (!iwl_is_rfkill(priv)) {
6814 IWL_DEBUG(IWL_DL_INFO | IWL_DL_RF_KILL,
6815 "HW and/or SW RF Kill no longer active, restarting "
6816 "device\n");
6817 if (!test_bit(STATUS_EXIT_PENDING, &priv->status))
6818 queue_work(priv->workqueue, &priv->restart);
6819 } else {
6820
6821 if (!test_bit(STATUS_RF_KILL_HW, &priv->status))
6822 IWL_DEBUG_RF_KILL("Can not turn radio back on - "
6823 "disabled by SW switch\n");
6824 else
6825 IWL_WARNING("Radio Frequency Kill Switch is On:\n"
6826 "Kill switch must be turned off for "
6827 "wireless networking to work.\n");
6828 }
6829 mutex_unlock(&priv->mutex);
6830 }
6831
6832 #define IWL_SCAN_CHECK_WATCHDOG (7 * HZ)
6833
6834 static void iwl_bg_scan_check(struct work_struct *data)
6835 {
6836 struct iwl_priv *priv =
6837 container_of(data, struct iwl_priv, scan_check.work);
6838
6839 if (test_bit(STATUS_EXIT_PENDING, &priv->status))
6840 return;
6841
6842 mutex_lock(&priv->mutex);
6843 if (test_bit(STATUS_SCANNING, &priv->status) ||
6844 test_bit(STATUS_SCAN_ABORTING, &priv->status)) {
6845 IWL_DEBUG(IWL_DL_INFO | IWL_DL_SCAN,
6846 "Scan completion watchdog resetting adapter (%dms)\n",
6847 jiffies_to_msecs(IWL_SCAN_CHECK_WATCHDOG));
6848
6849 if (!test_bit(STATUS_EXIT_PENDING, &priv->status))
6850 iwl_send_scan_abort(priv);
6851 }
6852 mutex_unlock(&priv->mutex);
6853 }
6854
6855 static void iwl_bg_request_scan(struct work_struct *data)
6856 {
6857 struct iwl_priv *priv =
6858 container_of(data, struct iwl_priv, request_scan);
6859 struct iwl_host_cmd cmd = {
6860 .id = REPLY_SCAN_CMD,
6861 .len = sizeof(struct iwl_scan_cmd),
6862 .meta.flags = CMD_SIZE_HUGE,
6863 };
6864 int rc = 0;
6865 struct iwl_scan_cmd *scan;
6866 struct ieee80211_conf *conf = NULL;
6867 u8 direct_mask;
6868 int phymode;
6869
6870 conf = ieee80211_get_hw_conf(priv->hw);
6871
6872 mutex_lock(&priv->mutex);
6873
6874 if (!iwl_is_ready(priv)) {
6875 IWL_WARNING("request scan called when driver not ready.\n");
6876 goto done;
6877 }
6878
6879 /* Make sure the scan wasn't cancelled before this queued work
6880 * was given the chance to run... */
6881 if (!test_bit(STATUS_SCANNING, &priv->status))
6882 goto done;
6883
6884 /* This should never be called or scheduled if there is currently
6885 * a scan active in the hardware. */
6886 if (test_bit(STATUS_SCAN_HW, &priv->status)) {
6887 IWL_DEBUG_INFO("Multiple concurrent scan requests in parallel. "
6888 "Ignoring second request.\n");
6889 rc = -EIO;
6890 goto done;
6891 }
6892
6893 if (test_bit(STATUS_EXIT_PENDING, &priv->status)) {
6894 IWL_DEBUG_SCAN("Aborting scan due to device shutdown\n");
6895 goto done;
6896 }
6897
6898 if (test_bit(STATUS_SCAN_ABORTING, &priv->status)) {
6899 IWL_DEBUG_HC("Scan request while abort pending. Queuing.\n");
6900 goto done;
6901 }
6902
6903 if (iwl_is_rfkill(priv)) {
6904 IWL_DEBUG_HC("Aborting scan due to RF Kill activation\n");
6905 goto done;
6906 }
6907
6908 if (!test_bit(STATUS_READY, &priv->status)) {
6909 IWL_DEBUG_HC("Scan request while uninitialized. Queuing.\n");
6910 goto done;
6911 }
6912
6913 if (!priv->scan_bands) {
6914 IWL_DEBUG_HC("Aborting scan due to no requested bands\n");
6915 goto done;
6916 }
6917
6918 if (!priv->scan) {
6919 priv->scan = kmalloc(sizeof(struct iwl_scan_cmd) +
6920 IWL_MAX_SCAN_SIZE, GFP_KERNEL);
6921 if (!priv->scan) {
6922 rc = -ENOMEM;
6923 goto done;
6924 }
6925 }
6926 scan = priv->scan;
6927 memset(scan, 0, sizeof(struct iwl_scan_cmd) + IWL_MAX_SCAN_SIZE);
6928
6929 scan->quiet_plcp_th = IWL_PLCP_QUIET_THRESH;
6930 scan->quiet_time = IWL_ACTIVE_QUIET_TIME;
6931
6932 if (iwl_is_associated(priv)) {
6933 u16 interval = 0;
6934 u32 extra;
6935 u32 suspend_time = 100;
6936 u32 scan_suspend_time = 100;
6937 unsigned long flags;
6938
6939 IWL_DEBUG_INFO("Scanning while associated...\n");
6940
6941 spin_lock_irqsave(&priv->lock, flags);
6942 interval = priv->beacon_int;
6943 spin_unlock_irqrestore(&priv->lock, flags);
6944
6945 scan->suspend_time = 0;
6946 scan->max_out_time = cpu_to_le32(200 * 1024);
6947 if (!interval)
6948 interval = suspend_time;
6949
6950 extra = (suspend_time / interval) << 22;
6951 scan_suspend_time = (extra |
6952 ((suspend_time % interval) * 1024));
6953 scan->suspend_time = cpu_to_le32(scan_suspend_time);
6954 IWL_DEBUG_SCAN("suspend_time 0x%X beacon interval %d\n",
6955 scan_suspend_time, interval);
6956 }
6957
6958 /* We should add the ability for user to lock to PASSIVE ONLY */
6959 if (priv->one_direct_scan) {
6960 IWL_DEBUG_SCAN
6961 ("Kicking off one direct scan for '%s'\n",
6962 iwl_escape_essid(priv->direct_ssid,
6963 priv->direct_ssid_len));
6964 scan->direct_scan[0].id = WLAN_EID_SSID;
6965 scan->direct_scan[0].len = priv->direct_ssid_len;
6966 memcpy(scan->direct_scan[0].ssid,
6967 priv->direct_ssid, priv->direct_ssid_len);
6968 direct_mask = 1;
6969 } else if (!iwl_is_associated(priv) && priv->essid_len) {
6970 scan->direct_scan[0].id = WLAN_EID_SSID;
6971 scan->direct_scan[0].len = priv->essid_len;
6972 memcpy(scan->direct_scan[0].ssid, priv->essid, priv->essid_len);
6973 direct_mask = 1;
6974 } else
6975 direct_mask = 0;
6976
6977 /* We don't build a direct scan probe request; the uCode will do
6978 * that based on the direct_mask added to each channel entry */
6979 scan->tx_cmd.len = cpu_to_le16(
6980 iwl_fill_probe_req(priv, (struct ieee80211_mgmt *)scan->data,
6981 IWL_MAX_SCAN_SIZE - sizeof(scan), 0));
6982 scan->tx_cmd.tx_flags = TX_CMD_FLG_SEQ_CTL_MSK;
6983 scan->tx_cmd.sta_id = priv->hw_setting.bcast_sta_id;
6984 scan->tx_cmd.stop_time.life_time = TX_CMD_LIFE_TIME_INFINITE;
6985
6986 /* flags + rate selection */
6987
6988 scan->tx_cmd.tx_flags |= cpu_to_le32(0x200);
6989
6990 switch (priv->scan_bands) {
6991 case 2:
6992 scan->flags = RXON_FLG_BAND_24G_MSK | RXON_FLG_AUTO_DETECT_MSK;
6993 scan->tx_cmd.rate_n_flags =
6994 iwl_hw_set_rate_n_flags(IWL_RATE_1M_PLCP,
6995 RATE_MCS_ANT_B_MSK|RATE_MCS_CCK_MSK);
6996
6997 scan->good_CRC_th = 0;
6998 phymode = MODE_IEEE80211G;
6999 break;
7000
7001 case 1:
7002 scan->tx_cmd.rate_n_flags =
7003 iwl_hw_set_rate_n_flags(IWL_RATE_6M_PLCP,
7004 RATE_MCS_ANT_B_MSK);
7005 scan->good_CRC_th = IWL_GOOD_CRC_TH;
7006 phymode = MODE_IEEE80211A;
7007 break;
7008
7009 default:
7010 IWL_WARNING("Invalid scan band count\n");
7011 goto done;
7012 }
7013
7014 /* select Rx chains */
7015
7016 /* Force use of chains B and C (0x6) for scan Rx.
7017 * Avoid A (0x1) because of its off-channel reception on A-band.
7018 * MIMO is not used here, but value is required to make uCode happy. */
7019 scan->rx_chain = RXON_RX_CHAIN_DRIVER_FORCE_MSK |
7020 cpu_to_le16((0x7 << RXON_RX_CHAIN_VALID_POS) |
7021 (0x6 << RXON_RX_CHAIN_FORCE_SEL_POS) |
7022 (0x7 << RXON_RX_CHAIN_FORCE_MIMO_SEL_POS));
7023
7024 if (priv->iw_mode == IEEE80211_IF_TYPE_MNTR)
7025 scan->filter_flags = RXON_FILTER_PROMISC_MSK;
7026
7027 if (direct_mask)
7028 IWL_DEBUG_SCAN
7029 ("Initiating direct scan for %s.\n",
7030 iwl_escape_essid(priv->essid, priv->essid_len));
7031 else
7032 IWL_DEBUG_SCAN("Initiating indirect scan.\n");
7033
7034 scan->channel_count =
7035 iwl_get_channels_for_scan(
7036 priv, phymode, 1, /* active */
7037 direct_mask,
7038 (void *)&scan->data[le16_to_cpu(scan->tx_cmd.len)]);
7039
7040 cmd.len += le16_to_cpu(scan->tx_cmd.len) +
7041 scan->channel_count * sizeof(struct iwl_scan_channel);
7042 cmd.data = scan;
7043 scan->len = cpu_to_le16(cmd.len);
7044
7045 set_bit(STATUS_SCAN_HW, &priv->status);
7046 rc = iwl_send_cmd_sync(priv, &cmd);
7047 if (rc)
7048 goto done;
7049
7050 queue_delayed_work(priv->workqueue, &priv->scan_check,
7051 IWL_SCAN_CHECK_WATCHDOG);
7052
7053 mutex_unlock(&priv->mutex);
7054 return;
7055
7056 done:
7057 /* inform mac80211 sacn aborted */
7058 queue_work(priv->workqueue, &priv->scan_completed);
7059 mutex_unlock(&priv->mutex);
7060 }
7061
7062 static void iwl_bg_up(struct work_struct *data)
7063 {
7064 struct iwl_priv *priv = container_of(data, struct iwl_priv, up);
7065
7066 if (test_bit(STATUS_EXIT_PENDING, &priv->status))
7067 return;
7068
7069 mutex_lock(&priv->mutex);
7070 __iwl_up(priv);
7071 mutex_unlock(&priv->mutex);
7072 }
7073
7074 static void iwl_bg_restart(struct work_struct *data)
7075 {
7076 struct iwl_priv *priv = container_of(data, struct iwl_priv, restart);
7077
7078 if (test_bit(STATUS_EXIT_PENDING, &priv->status))
7079 return;
7080
7081 iwl_down(priv);
7082 queue_work(priv->workqueue, &priv->up);
7083 }
7084
7085 static void iwl_bg_rx_replenish(struct work_struct *data)
7086 {
7087 struct iwl_priv *priv =
7088 container_of(data, struct iwl_priv, rx_replenish);
7089
7090 if (test_bit(STATUS_EXIT_PENDING, &priv->status))
7091 return;
7092
7093 mutex_lock(&priv->mutex);
7094 iwl_rx_replenish(priv);
7095 mutex_unlock(&priv->mutex);
7096 }
7097
7098 static void iwl_bg_post_associate(struct work_struct *data)
7099 {
7100 struct iwl_priv *priv = container_of(data, struct iwl_priv,
7101 post_associate.work);
7102
7103 int rc = 0;
7104 struct ieee80211_conf *conf = NULL;
7105 DECLARE_MAC_BUF(mac);
7106
7107 if (priv->iw_mode == IEEE80211_IF_TYPE_AP) {
7108 IWL_ERROR("%s Should not be called in AP mode\n", __FUNCTION__);
7109 return;
7110 }
7111
7112 IWL_DEBUG_ASSOC("Associated as %d to: %s\n",
7113 priv->assoc_id,
7114 print_mac(mac, priv->active_rxon.bssid_addr));
7115
7116
7117 if (test_bit(STATUS_EXIT_PENDING, &priv->status))
7118 return;
7119
7120 mutex_lock(&priv->mutex);
7121
7122 if (!priv->interface_id || !priv->is_open) {
7123 mutex_unlock(&priv->mutex);
7124 return;
7125 }
7126 iwl_scan_cancel_timeout(priv, 200);
7127
7128 conf = ieee80211_get_hw_conf(priv->hw);
7129
7130 priv->staging_rxon.filter_flags &= ~RXON_FILTER_ASSOC_MSK;
7131 iwl_commit_rxon(priv);
7132
7133 memset(&priv->rxon_timing, 0, sizeof(struct iwl_rxon_time_cmd));
7134 iwl_setup_rxon_timing(priv);
7135 rc = iwl_send_cmd_pdu(priv, REPLY_RXON_TIMING,
7136 sizeof(priv->rxon_timing), &priv->rxon_timing);
7137 if (rc)
7138 IWL_WARNING("REPLY_RXON_TIMING failed - "
7139 "Attempting to continue.\n");
7140
7141 priv->staging_rxon.filter_flags |= RXON_FILTER_ASSOC_MSK;
7142
7143 #ifdef CONFIG_IWLWIFI_HT
7144 if (priv->is_ht_enabled && priv->current_assoc_ht.is_ht)
7145 iwl4965_set_rxon_ht(priv, &priv->current_assoc_ht);
7146 else {
7147 priv->active_rate_ht[0] = 0;
7148 priv->active_rate_ht[1] = 0;
7149 priv->current_channel_width = IWL_CHANNEL_WIDTH_20MHZ;
7150 }
7151 #endif /* CONFIG_IWLWIFI_HT*/
7152 iwl4965_set_rxon_chain(priv);
7153 priv->staging_rxon.assoc_id = cpu_to_le16(priv->assoc_id);
7154
7155 IWL_DEBUG_ASSOC("assoc id %d beacon interval %d\n",
7156 priv->assoc_id, priv->beacon_int);
7157
7158 if (priv->assoc_capability & WLAN_CAPABILITY_SHORT_PREAMBLE)
7159 priv->staging_rxon.flags |= RXON_FLG_SHORT_PREAMBLE_MSK;
7160 else
7161 priv->staging_rxon.flags &= ~RXON_FLG_SHORT_PREAMBLE_MSK;
7162
7163 if (priv->staging_rxon.flags & RXON_FLG_BAND_24G_MSK) {
7164 if (priv->assoc_capability & WLAN_CAPABILITY_SHORT_SLOT_TIME)
7165 priv->staging_rxon.flags |= RXON_FLG_SHORT_SLOT_MSK;
7166 else
7167 priv->staging_rxon.flags &= ~RXON_FLG_SHORT_SLOT_MSK;
7168
7169 if (priv->iw_mode == IEEE80211_IF_TYPE_IBSS)
7170 priv->staging_rxon.flags &= ~RXON_FLG_SHORT_SLOT_MSK;
7171
7172 }
7173
7174 iwl_commit_rxon(priv);
7175
7176 switch (priv->iw_mode) {
7177 case IEEE80211_IF_TYPE_STA:
7178 iwl_rate_scale_init(priv->hw, IWL_AP_ID);
7179 break;
7180
7181 case IEEE80211_IF_TYPE_IBSS:
7182
7183 /* clear out the station table */
7184 iwl_clear_stations_table(priv);
7185
7186 iwl_rxon_add_station(priv, BROADCAST_ADDR, 0);
7187 iwl_rxon_add_station(priv, priv->bssid, 0);
7188 iwl_rate_scale_init(priv->hw, IWL_STA_ID);
7189 iwl_send_beacon_cmd(priv);
7190
7191 break;
7192
7193 default:
7194 IWL_ERROR("%s Should not be called in %d mode\n",
7195 __FUNCTION__, priv->iw_mode);
7196 break;
7197 }
7198
7199 iwl_sequence_reset(priv);
7200
7201 #ifdef CONFIG_IWLWIFI_SENSITIVITY
7202 /* Enable Rx differential gain and sensitivity calibrations */
7203 iwl4965_chain_noise_reset(priv);
7204 priv->start_calib = 1;
7205 #endif /* CONFIG_IWLWIFI_SENSITIVITY */
7206
7207 if (priv->iw_mode == IEEE80211_IF_TYPE_IBSS)
7208 priv->assoc_station_added = 1;
7209
7210 #ifdef CONFIG_IWLWIFI_QOS
7211 iwl_activate_qos(priv, 0);
7212 #endif /* CONFIG_IWLWIFI_QOS */
7213 mutex_unlock(&priv->mutex);
7214 }
7215
7216 static void iwl_bg_abort_scan(struct work_struct *work)
7217 {
7218 struct iwl_priv *priv = container_of(work, struct iwl_priv,
7219 abort_scan);
7220
7221 if (!iwl_is_ready(priv))
7222 return;
7223
7224 mutex_lock(&priv->mutex);
7225
7226 set_bit(STATUS_SCAN_ABORTING, &priv->status);
7227 iwl_send_scan_abort(priv);
7228
7229 mutex_unlock(&priv->mutex);
7230 }
7231
7232 static void iwl_bg_scan_completed(struct work_struct *work)
7233 {
7234 struct iwl_priv *priv =
7235 container_of(work, struct iwl_priv, scan_completed);
7236
7237 IWL_DEBUG(IWL_DL_INFO | IWL_DL_SCAN, "SCAN complete scan\n");
7238
7239 if (test_bit(STATUS_EXIT_PENDING, &priv->status))
7240 return;
7241
7242 ieee80211_scan_completed(priv->hw);
7243
7244 /* Since setting the TXPOWER may have been deferred while
7245 * performing the scan, fire one off */
7246 mutex_lock(&priv->mutex);
7247 iwl_hw_reg_send_txpower(priv);
7248 mutex_unlock(&priv->mutex);
7249 }
7250
7251 /*****************************************************************************
7252 *
7253 * mac80211 entry point functions
7254 *
7255 *****************************************************************************/
7256
7257 static int iwl_mac_start(struct ieee80211_hw *hw)
7258 {
7259 struct iwl_priv *priv = hw->priv;
7260
7261 IWL_DEBUG_MAC80211("enter\n");
7262
7263 /* we should be verifying the device is ready to be opened */
7264 mutex_lock(&priv->mutex);
7265
7266 priv->is_open = 1;
7267
7268 if (!iwl_is_rfkill(priv))
7269 ieee80211_start_queues(priv->hw);
7270
7271 mutex_unlock(&priv->mutex);
7272 IWL_DEBUG_MAC80211("leave\n");
7273 return 0;
7274 }
7275
7276 static void iwl_mac_stop(struct ieee80211_hw *hw)
7277 {
7278 struct iwl_priv *priv = hw->priv;
7279
7280 IWL_DEBUG_MAC80211("enter\n");
7281
7282
7283 mutex_lock(&priv->mutex);
7284 /* stop mac, cancel any scan request and clear
7285 * RXON_FILTER_ASSOC_MSK BIT
7286 */
7287 priv->is_open = 0;
7288 iwl_scan_cancel_timeout(priv, 100);
7289 cancel_delayed_work(&priv->post_associate);
7290 priv->staging_rxon.filter_flags &= ~RXON_FILTER_ASSOC_MSK;
7291 iwl_commit_rxon(priv);
7292 mutex_unlock(&priv->mutex);
7293
7294 IWL_DEBUG_MAC80211("leave\n");
7295 }
7296
7297 static int iwl_mac_tx(struct ieee80211_hw *hw, struct sk_buff *skb,
7298 struct ieee80211_tx_control *ctl)
7299 {
7300 struct iwl_priv *priv = hw->priv;
7301
7302 IWL_DEBUG_MAC80211("enter\n");
7303
7304 if (priv->iw_mode == IEEE80211_IF_TYPE_MNTR) {
7305 IWL_DEBUG_MAC80211("leave - monitor\n");
7306 return -1;
7307 }
7308
7309 IWL_DEBUG_TX("dev->xmit(%d bytes) at rate 0x%02x\n", skb->len,
7310 ctl->tx_rate);
7311
7312 if (iwl_tx_skb(priv, skb, ctl))
7313 dev_kfree_skb_any(skb);
7314
7315 IWL_DEBUG_MAC80211("leave\n");
7316 return 0;
7317 }
7318
7319 static int iwl_mac_add_interface(struct ieee80211_hw *hw,
7320 struct ieee80211_if_init_conf *conf)
7321 {
7322 struct iwl_priv *priv = hw->priv;
7323 unsigned long flags;
7324 DECLARE_MAC_BUF(mac);
7325
7326 IWL_DEBUG_MAC80211("enter: id %d, type %d\n", conf->if_id, conf->type);
7327 if (conf->mac_addr)
7328 IWL_DEBUG_MAC80211("enter: MAC %s\n",
7329 print_mac(mac, conf->mac_addr));
7330
7331 if (priv->interface_id) {
7332 IWL_DEBUG_MAC80211("leave - interface_id != 0\n");
7333 return 0;
7334 }
7335
7336 spin_lock_irqsave(&priv->lock, flags);
7337 priv->interface_id = conf->if_id;
7338
7339 spin_unlock_irqrestore(&priv->lock, flags);
7340
7341 mutex_lock(&priv->mutex);
7342 iwl_set_mode(priv, conf->type);
7343
7344 IWL_DEBUG_MAC80211("leave\n");
7345 mutex_unlock(&priv->mutex);
7346
7347 return 0;
7348 }
7349
7350 /**
7351 * iwl_mac_config - mac80211 config callback
7352 *
7353 * We ignore conf->flags & IEEE80211_CONF_SHORT_SLOT_TIME since it seems to
7354 * be set inappropriately and the driver currently sets the hardware up to
7355 * use it whenever needed.
7356 */
7357 static int iwl_mac_config(struct ieee80211_hw *hw, struct ieee80211_conf *conf)
7358 {
7359 struct iwl_priv *priv = hw->priv;
7360 const struct iwl_channel_info *ch_info;
7361 unsigned long flags;
7362
7363 mutex_lock(&priv->mutex);
7364 IWL_DEBUG_MAC80211("enter to channel %d\n", conf->channel);
7365
7366 if (!iwl_is_ready(priv)) {
7367 IWL_DEBUG_MAC80211("leave - not ready\n");
7368 mutex_unlock(&priv->mutex);
7369 return -EIO;
7370 }
7371
7372 /* TODO: Figure out how to get ieee80211_local->sta_scanning w/ only
7373 * what is exposed through include/ declrations */
7374 if (unlikely(!iwl_param_disable_hw_scan &&
7375 test_bit(STATUS_SCANNING, &priv->status))) {
7376 IWL_DEBUG_MAC80211("leave - scanning\n");
7377 mutex_unlock(&priv->mutex);
7378 return 0;
7379 }
7380
7381 spin_lock_irqsave(&priv->lock, flags);
7382
7383 ch_info = iwl_get_channel_info(priv, conf->phymode, conf->channel);
7384 if (!is_channel_valid(ch_info)) {
7385 IWL_DEBUG_SCAN("Channel %d [%d] is INVALID for this SKU.\n",
7386 conf->channel, conf->phymode);
7387 IWL_DEBUG_MAC80211("leave - invalid channel\n");
7388 spin_unlock_irqrestore(&priv->lock, flags);
7389 mutex_unlock(&priv->mutex);
7390 return -EINVAL;
7391 }
7392
7393 #ifdef CONFIG_IWLWIFI_HT
7394 /* if we are switching fron ht to 2.4 clear flags
7395 * from any ht related info since 2.4 does not
7396 * support ht */
7397 if ((le16_to_cpu(priv->staging_rxon.channel) != conf->channel)
7398 #ifdef IEEE80211_CONF_CHANNEL_SWITCH
7399 && !(conf->flags & IEEE80211_CONF_CHANNEL_SWITCH)
7400 #endif
7401 )
7402 priv->staging_rxon.flags = 0;
7403 #endif /* CONFIG_IWLWIFI_HT */
7404
7405 iwl_set_rxon_channel(priv, conf->phymode, conf->channel);
7406
7407 iwl_set_flags_for_phymode(priv, conf->phymode);
7408
7409 /* The list of supported rates and rate mask can be different
7410 * for each phymode; since the phymode may have changed, reset
7411 * the rate mask to what mac80211 lists */
7412 iwl_set_rate(priv);
7413
7414 spin_unlock_irqrestore(&priv->lock, flags);
7415
7416 #ifdef IEEE80211_CONF_CHANNEL_SWITCH
7417 if (conf->flags & IEEE80211_CONF_CHANNEL_SWITCH) {
7418 iwl_hw_channel_switch(priv, conf->channel);
7419 mutex_unlock(&priv->mutex);
7420 return 0;
7421 }
7422 #endif
7423
7424 iwl_radio_kill_sw(priv, !conf->radio_enabled);
7425
7426 if (!conf->radio_enabled) {
7427 IWL_DEBUG_MAC80211("leave - radio disabled\n");
7428 mutex_unlock(&priv->mutex);
7429 return 0;
7430 }
7431
7432 if (iwl_is_rfkill(priv)) {
7433 IWL_DEBUG_MAC80211("leave - RF kill\n");
7434 mutex_unlock(&priv->mutex);
7435 return -EIO;
7436 }
7437
7438 iwl_set_rate(priv);
7439
7440 if (memcmp(&priv->active_rxon,
7441 &priv->staging_rxon, sizeof(priv->staging_rxon)))
7442 iwl_commit_rxon(priv);
7443 else
7444 IWL_DEBUG_INFO("No re-sending same RXON configuration.\n");
7445
7446 IWL_DEBUG_MAC80211("leave\n");
7447
7448 mutex_unlock(&priv->mutex);
7449
7450 return 0;
7451 }
7452
7453 static void iwl_config_ap(struct iwl_priv *priv)
7454 {
7455 int rc = 0;
7456
7457 if (priv->status & STATUS_EXIT_PENDING)
7458 return;
7459
7460 /* The following should be done only at AP bring up */
7461 if ((priv->active_rxon.filter_flags & RXON_FILTER_ASSOC_MSK) == 0) {
7462
7463 /* RXON - unassoc (to set timing command) */
7464 priv->staging_rxon.filter_flags &= ~RXON_FILTER_ASSOC_MSK;
7465 iwl_commit_rxon(priv);
7466
7467 /* RXON Timing */
7468 memset(&priv->rxon_timing, 0, sizeof(struct iwl_rxon_time_cmd));
7469 iwl_setup_rxon_timing(priv);
7470 rc = iwl_send_cmd_pdu(priv, REPLY_RXON_TIMING,
7471 sizeof(priv->rxon_timing), &priv->rxon_timing);
7472 if (rc)
7473 IWL_WARNING("REPLY_RXON_TIMING failed - "
7474 "Attempting to continue.\n");
7475
7476 iwl4965_set_rxon_chain(priv);
7477
7478 /* FIXME: what should be the assoc_id for AP? */
7479 priv->staging_rxon.assoc_id = cpu_to_le16(priv->assoc_id);
7480 if (priv->assoc_capability & WLAN_CAPABILITY_SHORT_PREAMBLE)
7481 priv->staging_rxon.flags |=
7482 RXON_FLG_SHORT_PREAMBLE_MSK;
7483 else
7484 priv->staging_rxon.flags &=
7485 ~RXON_FLG_SHORT_PREAMBLE_MSK;
7486
7487 if (priv->staging_rxon.flags & RXON_FLG_BAND_24G_MSK) {
7488 if (priv->assoc_capability &
7489 WLAN_CAPABILITY_SHORT_SLOT_TIME)
7490 priv->staging_rxon.flags |=
7491 RXON_FLG_SHORT_SLOT_MSK;
7492 else
7493 priv->staging_rxon.flags &=
7494 ~RXON_FLG_SHORT_SLOT_MSK;
7495
7496 if (priv->iw_mode == IEEE80211_IF_TYPE_IBSS)
7497 priv->staging_rxon.flags &=
7498 ~RXON_FLG_SHORT_SLOT_MSK;
7499 }
7500 /* restore RXON assoc */
7501 priv->staging_rxon.filter_flags |= RXON_FILTER_ASSOC_MSK;
7502 iwl_commit_rxon(priv);
7503 #ifdef CONFIG_IWLWIFI_QOS
7504 iwl_activate_qos(priv, 1);
7505 #endif
7506 iwl_rxon_add_station(priv, BROADCAST_ADDR, 0);
7507 }
7508 iwl_send_beacon_cmd(priv);
7509
7510 /* FIXME - we need to add code here to detect a totally new
7511 * configuration, reset the AP, unassoc, rxon timing, assoc,
7512 * clear sta table, add BCAST sta... */
7513 }
7514
7515 static int iwl_mac_config_interface(struct ieee80211_hw *hw, int if_id,
7516 struct ieee80211_if_conf *conf)
7517 {
7518 struct iwl_priv *priv = hw->priv;
7519 DECLARE_MAC_BUF(mac);
7520 unsigned long flags;
7521 int rc;
7522
7523 if (conf == NULL)
7524 return -EIO;
7525
7526 if ((priv->iw_mode == IEEE80211_IF_TYPE_AP) &&
7527 (!conf->beacon || !conf->ssid_len)) {
7528 IWL_DEBUG_MAC80211
7529 ("Leaving in AP mode because HostAPD is not ready.\n");
7530 return 0;
7531 }
7532
7533 mutex_lock(&priv->mutex);
7534
7535 IWL_DEBUG_MAC80211("enter: interface id %d\n", if_id);
7536 if (conf->bssid)
7537 IWL_DEBUG_MAC80211("bssid: %s\n",
7538 print_mac(mac, conf->bssid));
7539
7540 /*
7541 * very dubious code was here; the probe filtering flag is never set:
7542 *
7543 if (unlikely(test_bit(STATUS_SCANNING, &priv->status)) &&
7544 !(priv->hw->flags & IEEE80211_HW_NO_PROBE_FILTERING)) {
7545 */
7546 if (unlikely(test_bit(STATUS_SCANNING, &priv->status))) {
7547 IWL_DEBUG_MAC80211("leave - scanning\n");
7548 mutex_unlock(&priv->mutex);
7549 return 0;
7550 }
7551
7552 if (priv->interface_id != if_id) {
7553 IWL_DEBUG_MAC80211("leave - interface_id != if_id\n");
7554 mutex_unlock(&priv->mutex);
7555 return 0;
7556 }
7557
7558 if (priv->iw_mode == IEEE80211_IF_TYPE_AP) {
7559 if (!conf->bssid) {
7560 conf->bssid = priv->mac_addr;
7561 memcpy(priv->bssid, priv->mac_addr, ETH_ALEN);
7562 IWL_DEBUG_MAC80211("bssid was set to: %s\n",
7563 print_mac(mac, conf->bssid));
7564 }
7565 if (priv->ibss_beacon)
7566 dev_kfree_skb(priv->ibss_beacon);
7567
7568 priv->ibss_beacon = conf->beacon;
7569 }
7570
7571 if (conf->bssid && !is_zero_ether_addr(conf->bssid) &&
7572 !is_multicast_ether_addr(conf->bssid)) {
7573 /* If there is currently a HW scan going on in the background
7574 * then we need to cancel it else the RXON below will fail. */
7575 if (iwl_scan_cancel_timeout(priv, 100)) {
7576 IWL_WARNING("Aborted scan still in progress "
7577 "after 100ms\n");
7578 IWL_DEBUG_MAC80211("leaving - scan abort failed.\n");
7579 mutex_unlock(&priv->mutex);
7580 return -EAGAIN;
7581 }
7582 memcpy(priv->staging_rxon.bssid_addr, conf->bssid, ETH_ALEN);
7583
7584 /* TODO: Audit driver for usage of these members and see
7585 * if mac80211 deprecates them (priv->bssid looks like it
7586 * shouldn't be there, but I haven't scanned the IBSS code
7587 * to verify) - jpk */
7588 memcpy(priv->bssid, conf->bssid, ETH_ALEN);
7589
7590 if (priv->iw_mode == IEEE80211_IF_TYPE_AP)
7591 iwl_config_ap(priv);
7592 else {
7593 rc = iwl_commit_rxon(priv);
7594 if ((priv->iw_mode == IEEE80211_IF_TYPE_STA) && rc)
7595 iwl_rxon_add_station(
7596 priv, priv->active_rxon.bssid_addr, 1);
7597 }
7598
7599 } else {
7600 iwl_scan_cancel_timeout(priv, 100);
7601 priv->staging_rxon.filter_flags &= ~RXON_FILTER_ASSOC_MSK;
7602 iwl_commit_rxon(priv);
7603 }
7604
7605 spin_lock_irqsave(&priv->lock, flags);
7606 if (!conf->ssid_len)
7607 memset(priv->essid, 0, IW_ESSID_MAX_SIZE);
7608 else
7609 memcpy(priv->essid, conf->ssid, conf->ssid_len);
7610
7611 priv->essid_len = conf->ssid_len;
7612 spin_unlock_irqrestore(&priv->lock, flags);
7613
7614 IWL_DEBUG_MAC80211("leave\n");
7615 mutex_unlock(&priv->mutex);
7616
7617 return 0;
7618 }
7619
7620 static void iwl_configure_filter(struct ieee80211_hw *hw,
7621 unsigned int changed_flags,
7622 unsigned int *total_flags,
7623 int mc_count, struct dev_addr_list *mc_list)
7624 {
7625 /*
7626 * XXX: dummy
7627 * see also iwl_connection_init_rx_config
7628 */
7629 *total_flags = 0;
7630 }
7631
7632 static void iwl_mac_remove_interface(struct ieee80211_hw *hw,
7633 struct ieee80211_if_init_conf *conf)
7634 {
7635 struct iwl_priv *priv = hw->priv;
7636
7637 IWL_DEBUG_MAC80211("enter\n");
7638
7639 mutex_lock(&priv->mutex);
7640
7641 iwl_scan_cancel_timeout(priv, 100);
7642 cancel_delayed_work(&priv->post_associate);
7643 priv->staging_rxon.filter_flags &= ~RXON_FILTER_ASSOC_MSK;
7644 iwl_commit_rxon(priv);
7645
7646 if (priv->interface_id == conf->if_id) {
7647 priv->interface_id = 0;
7648 memset(priv->bssid, 0, ETH_ALEN);
7649 memset(priv->essid, 0, IW_ESSID_MAX_SIZE);
7650 priv->essid_len = 0;
7651 }
7652 mutex_unlock(&priv->mutex);
7653
7654 IWL_DEBUG_MAC80211("leave\n");
7655
7656 }
7657
7658 #define IWL_DELAY_NEXT_SCAN (HZ*2)
7659 static int iwl_mac_hw_scan(struct ieee80211_hw *hw, u8 *ssid, size_t len)
7660 {
7661 int rc = 0;
7662 unsigned long flags;
7663 struct iwl_priv *priv = hw->priv;
7664
7665 IWL_DEBUG_MAC80211("enter\n");
7666
7667 mutex_lock(&priv->mutex);
7668 spin_lock_irqsave(&priv->lock, flags);
7669
7670 if (!iwl_is_ready_rf(priv)) {
7671 rc = -EIO;
7672 IWL_DEBUG_MAC80211("leave - not ready or exit pending\n");
7673 goto out_unlock;
7674 }
7675
7676 if (priv->iw_mode == IEEE80211_IF_TYPE_AP) { /* APs don't scan */
7677 rc = -EIO;
7678 IWL_ERROR("ERROR: APs don't scan\n");
7679 goto out_unlock;
7680 }
7681
7682 /* if we just finished scan ask for delay */
7683 if (priv->last_scan_jiffies &&
7684 time_after(priv->last_scan_jiffies + IWL_DELAY_NEXT_SCAN,
7685 jiffies)) {
7686 rc = -EAGAIN;
7687 goto out_unlock;
7688 }
7689 if (len) {
7690 IWL_DEBUG_SCAN("direct scan for "
7691 "%s [%d]\n ",
7692 iwl_escape_essid(ssid, len), (int)len);
7693
7694 priv->one_direct_scan = 1;
7695 priv->direct_ssid_len = (u8)
7696 min((u8) len, (u8) IW_ESSID_MAX_SIZE);
7697 memcpy(priv->direct_ssid, ssid, priv->direct_ssid_len);
7698 } else
7699 priv->one_direct_scan = 0;
7700
7701 rc = iwl_scan_initiate(priv);
7702
7703 IWL_DEBUG_MAC80211("leave\n");
7704
7705 out_unlock:
7706 spin_unlock_irqrestore(&priv->lock, flags);
7707 mutex_unlock(&priv->mutex);
7708
7709 return rc;
7710 }
7711
7712 static int iwl_mac_set_key(struct ieee80211_hw *hw, enum set_key_cmd cmd,
7713 const u8 *local_addr, const u8 *addr,
7714 struct ieee80211_key_conf *key)
7715 {
7716 struct iwl_priv *priv = hw->priv;
7717 DECLARE_MAC_BUF(mac);
7718 int rc = 0;
7719 u8 sta_id;
7720
7721 IWL_DEBUG_MAC80211("enter\n");
7722
7723 if (!iwl_param_hwcrypto) {
7724 IWL_DEBUG_MAC80211("leave - hwcrypto disabled\n");
7725 return -EOPNOTSUPP;
7726 }
7727
7728 if (is_zero_ether_addr(addr))
7729 /* only support pairwise keys */
7730 return -EOPNOTSUPP;
7731
7732 sta_id = iwl_hw_find_station(priv, addr);
7733 if (sta_id == IWL_INVALID_STATION) {
7734 IWL_DEBUG_MAC80211("leave - %s not in station map.\n",
7735 print_mac(mac, addr));
7736 return -EINVAL;
7737 }
7738
7739 mutex_lock(&priv->mutex);
7740
7741 iwl_scan_cancel_timeout(priv, 100);
7742
7743 switch (cmd) {
7744 case SET_KEY:
7745 rc = iwl_update_sta_key_info(priv, key, sta_id);
7746 if (!rc) {
7747 iwl_set_rxon_hwcrypto(priv, 1);
7748 iwl_commit_rxon(priv);
7749 key->hw_key_idx = sta_id;
7750 IWL_DEBUG_MAC80211("set_key success, using hwcrypto\n");
7751 key->flags |= IEEE80211_KEY_FLAG_GENERATE_IV;
7752 }
7753 break;
7754 case DISABLE_KEY:
7755 rc = iwl_clear_sta_key_info(priv, sta_id);
7756 if (!rc) {
7757 iwl_set_rxon_hwcrypto(priv, 0);
7758 iwl_commit_rxon(priv);
7759 IWL_DEBUG_MAC80211("disable hwcrypto key\n");
7760 }
7761 break;
7762 default:
7763 rc = -EINVAL;
7764 }
7765
7766 IWL_DEBUG_MAC80211("leave\n");
7767 mutex_unlock(&priv->mutex);
7768
7769 return rc;
7770 }
7771
7772 static int iwl_mac_conf_tx(struct ieee80211_hw *hw, int queue,
7773 const struct ieee80211_tx_queue_params *params)
7774 {
7775 struct iwl_priv *priv = hw->priv;
7776 #ifdef CONFIG_IWLWIFI_QOS
7777 unsigned long flags;
7778 int q;
7779 #endif /* CONFIG_IWL_QOS */
7780
7781 IWL_DEBUG_MAC80211("enter\n");
7782
7783 if (!iwl_is_ready_rf(priv)) {
7784 IWL_DEBUG_MAC80211("leave - RF not ready\n");
7785 return -EIO;
7786 }
7787
7788 if (queue >= AC_NUM) {
7789 IWL_DEBUG_MAC80211("leave - queue >= AC_NUM %d\n", queue);
7790 return 0;
7791 }
7792
7793 #ifdef CONFIG_IWLWIFI_QOS
7794 if (!priv->qos_data.qos_enable) {
7795 priv->qos_data.qos_active = 0;
7796 IWL_DEBUG_MAC80211("leave - qos not enabled\n");
7797 return 0;
7798 }
7799 q = AC_NUM - 1 - queue;
7800
7801 spin_lock_irqsave(&priv->lock, flags);
7802
7803 priv->qos_data.def_qos_parm.ac[q].cw_min = cpu_to_le16(params->cw_min);
7804 priv->qos_data.def_qos_parm.ac[q].cw_max = cpu_to_le16(params->cw_max);
7805 priv->qos_data.def_qos_parm.ac[q].aifsn = params->aifs;
7806 priv->qos_data.def_qos_parm.ac[q].edca_txop =
7807 cpu_to_le16((params->burst_time * 100));
7808
7809 priv->qos_data.def_qos_parm.ac[q].reserved1 = 0;
7810 priv->qos_data.qos_active = 1;
7811
7812 spin_unlock_irqrestore(&priv->lock, flags);
7813
7814 mutex_lock(&priv->mutex);
7815 if (priv->iw_mode == IEEE80211_IF_TYPE_AP)
7816 iwl_activate_qos(priv, 1);
7817 else if (priv->assoc_id && iwl_is_associated(priv))
7818 iwl_activate_qos(priv, 0);
7819
7820 mutex_unlock(&priv->mutex);
7821
7822 #endif /*CONFIG_IWLWIFI_QOS */
7823
7824 IWL_DEBUG_MAC80211("leave\n");
7825 return 0;
7826 }
7827
7828 static int iwl_mac_get_tx_stats(struct ieee80211_hw *hw,
7829 struct ieee80211_tx_queue_stats *stats)
7830 {
7831 struct iwl_priv *priv = hw->priv;
7832 int i, avail;
7833 struct iwl_tx_queue *txq;
7834 struct iwl_queue *q;
7835 unsigned long flags;
7836
7837 IWL_DEBUG_MAC80211("enter\n");
7838
7839 if (!iwl_is_ready_rf(priv)) {
7840 IWL_DEBUG_MAC80211("leave - RF not ready\n");
7841 return -EIO;
7842 }
7843
7844 spin_lock_irqsave(&priv->lock, flags);
7845
7846 for (i = 0; i < AC_NUM; i++) {
7847 txq = &priv->txq[i];
7848 q = &txq->q;
7849 avail = iwl_queue_space(q);
7850
7851 stats->data[i].len = q->n_window - avail;
7852 stats->data[i].limit = q->n_window - q->high_mark;
7853 stats->data[i].count = q->n_window;
7854
7855 }
7856 spin_unlock_irqrestore(&priv->lock, flags);
7857
7858 IWL_DEBUG_MAC80211("leave\n");
7859
7860 return 0;
7861 }
7862
7863 static int iwl_mac_get_stats(struct ieee80211_hw *hw,
7864 struct ieee80211_low_level_stats *stats)
7865 {
7866 IWL_DEBUG_MAC80211("enter\n");
7867 IWL_DEBUG_MAC80211("leave\n");
7868
7869 return 0;
7870 }
7871
7872 static u64 iwl_mac_get_tsf(struct ieee80211_hw *hw)
7873 {
7874 IWL_DEBUG_MAC80211("enter\n");
7875 IWL_DEBUG_MAC80211("leave\n");
7876
7877 return 0;
7878 }
7879
7880 static void iwl_mac_reset_tsf(struct ieee80211_hw *hw)
7881 {
7882 struct iwl_priv *priv = hw->priv;
7883 unsigned long flags;
7884
7885 mutex_lock(&priv->mutex);
7886 IWL_DEBUG_MAC80211("enter\n");
7887
7888 priv->lq_mngr.lq_ready = 0;
7889 #ifdef CONFIG_IWLWIFI_HT
7890 spin_lock_irqsave(&priv->lock, flags);
7891 memset(&priv->current_assoc_ht, 0, sizeof(struct sta_ht_info));
7892 spin_unlock_irqrestore(&priv->lock, flags);
7893 #ifdef CONFIG_IWLWIFI_HT_AGG
7894 /* if (priv->lq_mngr.agg_ctrl.granted_ba)
7895 iwl4965_turn_off_agg(priv, TID_ALL_SPECIFIED);*/
7896
7897 memset(&(priv->lq_mngr.agg_ctrl), 0, sizeof(struct iwl_agg_control));
7898 priv->lq_mngr.agg_ctrl.tid_traffic_load_threshold = 10;
7899 priv->lq_mngr.agg_ctrl.ba_timeout = 5000;
7900 priv->lq_mngr.agg_ctrl.auto_agg = 1;
7901
7902 if (priv->lq_mngr.agg_ctrl.auto_agg)
7903 priv->lq_mngr.agg_ctrl.requested_ba = TID_ALL_ENABLED;
7904 #endif /*CONFIG_IWLWIFI_HT_AGG */
7905 #endif /* CONFIG_IWLWIFI_HT */
7906
7907 #ifdef CONFIG_IWLWIFI_QOS
7908 iwl_reset_qos(priv);
7909 #endif
7910
7911 cancel_delayed_work(&priv->post_associate);
7912
7913 spin_lock_irqsave(&priv->lock, flags);
7914 priv->assoc_id = 0;
7915 priv->assoc_capability = 0;
7916 priv->call_post_assoc_from_beacon = 0;
7917 priv->assoc_station_added = 0;
7918
7919 /* new association get rid of ibss beacon skb */
7920 if (priv->ibss_beacon)
7921 dev_kfree_skb(priv->ibss_beacon);
7922
7923 priv->ibss_beacon = NULL;
7924
7925 priv->beacon_int = priv->hw->conf.beacon_int;
7926 priv->timestamp1 = 0;
7927 priv->timestamp0 = 0;
7928 if ((priv->iw_mode == IEEE80211_IF_TYPE_STA))
7929 priv->beacon_int = 0;
7930
7931 spin_unlock_irqrestore(&priv->lock, flags);
7932
7933 /* we are restarting association process
7934 * clear RXON_FILTER_ASSOC_MSK bit
7935 */
7936 if (priv->iw_mode != IEEE80211_IF_TYPE_AP) {
7937 iwl_scan_cancel_timeout(priv, 100);
7938 priv->staging_rxon.filter_flags &= ~RXON_FILTER_ASSOC_MSK;
7939 iwl_commit_rxon(priv);
7940 }
7941
7942 /* Per mac80211.h: This is only used in IBSS mode... */
7943 if (priv->iw_mode != IEEE80211_IF_TYPE_IBSS) {
7944
7945 IWL_DEBUG_MAC80211("leave - not in IBSS\n");
7946 mutex_unlock(&priv->mutex);
7947 return;
7948 }
7949
7950 if (!iwl_is_ready_rf(priv)) {
7951 IWL_DEBUG_MAC80211("leave - not ready\n");
7952 mutex_unlock(&priv->mutex);
7953 return;
7954 }
7955
7956 priv->only_active_channel = 0;
7957
7958 iwl_set_rate(priv);
7959
7960 mutex_unlock(&priv->mutex);
7961
7962 IWL_DEBUG_MAC80211("leave\n");
7963
7964 }
7965
7966 static int iwl_mac_beacon_update(struct ieee80211_hw *hw, struct sk_buff *skb,
7967 struct ieee80211_tx_control *control)
7968 {
7969 struct iwl_priv *priv = hw->priv;
7970 unsigned long flags;
7971
7972 mutex_lock(&priv->mutex);
7973 IWL_DEBUG_MAC80211("enter\n");
7974
7975 if (!iwl_is_ready_rf(priv)) {
7976 IWL_DEBUG_MAC80211("leave - RF not ready\n");
7977 mutex_unlock(&priv->mutex);
7978 return -EIO;
7979 }
7980
7981 if (priv->iw_mode != IEEE80211_IF_TYPE_IBSS) {
7982 IWL_DEBUG_MAC80211("leave - not IBSS\n");
7983 mutex_unlock(&priv->mutex);
7984 return -EIO;
7985 }
7986
7987 spin_lock_irqsave(&priv->lock, flags);
7988
7989 if (priv->ibss_beacon)
7990 dev_kfree_skb(priv->ibss_beacon);
7991
7992 priv->ibss_beacon = skb;
7993
7994 priv->assoc_id = 0;
7995
7996 IWL_DEBUG_MAC80211("leave\n");
7997 spin_unlock_irqrestore(&priv->lock, flags);
7998
7999 #ifdef CONFIG_IWLWIFI_QOS
8000 iwl_reset_qos(priv);
8001 #endif
8002
8003 queue_work(priv->workqueue, &priv->post_associate.work);
8004
8005 mutex_unlock(&priv->mutex);
8006
8007 return 0;
8008 }
8009
8010 #ifdef CONFIG_IWLWIFI_HT
8011 union ht_cap_info {
8012 struct {
8013 u16 advanced_coding_cap :1;
8014 u16 supported_chan_width_set :1;
8015 u16 mimo_power_save_mode :2;
8016 u16 green_field :1;
8017 u16 short_GI20 :1;
8018 u16 short_GI40 :1;
8019 u16 tx_stbc :1;
8020 u16 rx_stbc :1;
8021 u16 beam_forming :1;
8022 u16 delayed_ba :1;
8023 u16 maximal_amsdu_size :1;
8024 u16 cck_mode_at_40MHz :1;
8025 u16 psmp_support :1;
8026 u16 stbc_ctrl_frame_support :1;
8027 u16 sig_txop_protection_support :1;
8028 };
8029 u16 val;
8030 } __attribute__ ((packed));
8031
8032 union ht_param_info{
8033 struct {
8034 u8 max_rx_ampdu_factor :2;
8035 u8 mpdu_density :3;
8036 u8 reserved :3;
8037 };
8038 u8 val;
8039 } __attribute__ ((packed));
8040
8041 union ht_exra_param_info {
8042 struct {
8043 u8 ext_chan_offset :2;
8044 u8 tx_chan_width :1;
8045 u8 rifs_mode :1;
8046 u8 controlled_access_only :1;
8047 u8 service_interval_granularity :3;
8048 };
8049 u8 val;
8050 } __attribute__ ((packed));
8051
8052 union ht_operation_mode{
8053 struct {
8054 u16 op_mode :2;
8055 u16 non_GF :1;
8056 u16 reserved :13;
8057 };
8058 u16 val;
8059 } __attribute__ ((packed));
8060
8061
8062 static int sta_ht_info_init(struct ieee80211_ht_capability *ht_cap,
8063 struct ieee80211_ht_additional_info *ht_extra,
8064 struct sta_ht_info *ht_info_ap,
8065 struct sta_ht_info *ht_info)
8066 {
8067 union ht_cap_info cap;
8068 union ht_operation_mode op_mode;
8069 union ht_param_info param_info;
8070 union ht_exra_param_info extra_param_info;
8071
8072 IWL_DEBUG_MAC80211("enter: \n");
8073
8074 if (!ht_info) {
8075 IWL_DEBUG_MAC80211("leave: ht_info is NULL\n");
8076 return -1;
8077 }
8078
8079 if (ht_cap) {
8080 cap.val = (u16) le16_to_cpu(ht_cap->capabilities_info);
8081 param_info.val = ht_cap->mac_ht_params_info;
8082 ht_info->is_ht = 1;
8083 if (cap.short_GI20)
8084 ht_info->sgf |= 0x1;
8085 if (cap.short_GI40)
8086 ht_info->sgf |= 0x2;
8087 ht_info->is_green_field = cap.green_field;
8088 ht_info->max_amsdu_size = cap.maximal_amsdu_size;
8089 ht_info->supported_chan_width = cap.supported_chan_width_set;
8090 ht_info->tx_mimo_ps_mode = cap.mimo_power_save_mode;
8091 memcpy(ht_info->supp_rates, ht_cap->supported_mcs_set, 16);
8092
8093 ht_info->ampdu_factor = param_info.max_rx_ampdu_factor;
8094 ht_info->mpdu_density = param_info.mpdu_density;
8095
8096 IWL_DEBUG_MAC80211("SISO mask 0x%X MIMO mask 0x%X \n",
8097 ht_cap->supported_mcs_set[0],
8098 ht_cap->supported_mcs_set[1]);
8099
8100 if (ht_info_ap) {
8101 ht_info->control_channel = ht_info_ap->control_channel;
8102 ht_info->extension_chan_offset =
8103 ht_info_ap->extension_chan_offset;
8104 ht_info->tx_chan_width = ht_info_ap->tx_chan_width;
8105 ht_info->operating_mode = ht_info_ap->operating_mode;
8106 }
8107
8108 if (ht_extra) {
8109 extra_param_info.val = ht_extra->ht_param;
8110 ht_info->control_channel = ht_extra->control_chan;
8111 ht_info->extension_chan_offset =
8112 extra_param_info.ext_chan_offset;
8113 ht_info->tx_chan_width = extra_param_info.tx_chan_width;
8114 op_mode.val = (u16)
8115 le16_to_cpu(ht_extra->operation_mode);
8116 ht_info->operating_mode = op_mode.op_mode;
8117 IWL_DEBUG_MAC80211("control channel %d\n",
8118 ht_extra->control_chan);
8119 }
8120 } else
8121 ht_info->is_ht = 0;
8122
8123 IWL_DEBUG_MAC80211("leave\n");
8124 return 0;
8125 }
8126
8127 static int iwl_mac_conf_ht(struct ieee80211_hw *hw,
8128 struct ieee80211_ht_capability *ht_cap,
8129 struct ieee80211_ht_additional_info *ht_extra)
8130 {
8131 struct iwl_priv *priv = hw->priv;
8132 int rs;
8133
8134 IWL_DEBUG_MAC80211("enter: \n");
8135
8136 rs = sta_ht_info_init(ht_cap, ht_extra, NULL, &priv->current_assoc_ht);
8137 iwl4965_set_rxon_chain(priv);
8138
8139 if (priv && priv->assoc_id &&
8140 (priv->iw_mode == IEEE80211_IF_TYPE_STA)) {
8141 unsigned long flags;
8142
8143 spin_lock_irqsave(&priv->lock, flags);
8144 if (priv->beacon_int)
8145 queue_work(priv->workqueue, &priv->post_associate.work);
8146 else
8147 priv->call_post_assoc_from_beacon = 1;
8148 spin_unlock_irqrestore(&priv->lock, flags);
8149 }
8150
8151 IWL_DEBUG_MAC80211("leave: control channel %d\n",
8152 ht_extra->control_chan);
8153 return rs;
8154
8155 }
8156
8157 static void iwl_set_ht_capab(struct ieee80211_hw *hw,
8158 struct ieee80211_ht_capability *ht_cap,
8159 u8 use_wide_chan)
8160 {
8161 union ht_cap_info cap;
8162 union ht_param_info param_info;
8163
8164 memset(&cap, 0, sizeof(union ht_cap_info));
8165 memset(&param_info, 0, sizeof(union ht_param_info));
8166
8167 cap.maximal_amsdu_size = HT_IE_MAX_AMSDU_SIZE_4K;
8168 cap.green_field = 1;
8169 cap.short_GI20 = 1;
8170 cap.short_GI40 = 1;
8171 cap.supported_chan_width_set = use_wide_chan;
8172 cap.mimo_power_save_mode = 0x3;
8173
8174 param_info.max_rx_ampdu_factor = CFG_HT_RX_AMPDU_FACTOR_DEF;
8175 param_info.mpdu_density = CFG_HT_MPDU_DENSITY_DEF;
8176 ht_cap->capabilities_info = (__le16) cpu_to_le16(cap.val);
8177 ht_cap->mac_ht_params_info = (u8) param_info.val;
8178
8179 ht_cap->supported_mcs_set[0] = 0xff;
8180 ht_cap->supported_mcs_set[1] = 0xff;
8181 ht_cap->supported_mcs_set[4] =
8182 (cap.supported_chan_width_set) ? 0x1: 0x0;
8183 }
8184
8185 static void iwl_mac_get_ht_capab(struct ieee80211_hw *hw,
8186 struct ieee80211_ht_capability *ht_cap)
8187 {
8188 u8 use_wide_channel = 1;
8189 struct iwl_priv *priv = hw->priv;
8190
8191 IWL_DEBUG_MAC80211("enter: \n");
8192 if (priv->channel_width != IWL_CHANNEL_WIDTH_40MHZ)
8193 use_wide_channel = 0;
8194
8195 /* no fat tx allowed on 2.4GHZ */
8196 if (priv->phymode != MODE_IEEE80211A)
8197 use_wide_channel = 0;
8198
8199 iwl_set_ht_capab(hw, ht_cap, use_wide_channel);
8200 IWL_DEBUG_MAC80211("leave: \n");
8201 }
8202 #endif /*CONFIG_IWLWIFI_HT*/
8203
8204 /*****************************************************************************
8205 *
8206 * sysfs attributes
8207 *
8208 *****************************************************************************/
8209
8210 #ifdef CONFIG_IWLWIFI_DEBUG
8211
8212 /*
8213 * The following adds a new attribute to the sysfs representation
8214 * of this device driver (i.e. a new file in /sys/bus/pci/drivers/iwl/)
8215 * used for controlling the debug level.
8216 *
8217 * See the level definitions in iwl for details.
8218 */
8219
8220 static ssize_t show_debug_level(struct device_driver *d, char *buf)
8221 {
8222 return sprintf(buf, "0x%08X\n", iwl_debug_level);
8223 }
8224 static ssize_t store_debug_level(struct device_driver *d,
8225 const char *buf, size_t count)
8226 {
8227 char *p = (char *)buf;
8228 u32 val;
8229
8230 val = simple_strtoul(p, &p, 0);
8231 if (p == buf)
8232 printk(KERN_INFO DRV_NAME
8233 ": %s is not in hex or decimal form.\n", buf);
8234 else
8235 iwl_debug_level = val;
8236
8237 return strnlen(buf, count);
8238 }
8239
8240 static DRIVER_ATTR(debug_level, S_IWUSR | S_IRUGO,
8241 show_debug_level, store_debug_level);
8242
8243 #endif /* CONFIG_IWLWIFI_DEBUG */
8244
8245 static ssize_t show_rf_kill(struct device *d,
8246 struct device_attribute *attr, char *buf)
8247 {
8248 /*
8249 * 0 - RF kill not enabled
8250 * 1 - SW based RF kill active (sysfs)
8251 * 2 - HW based RF kill active
8252 * 3 - Both HW and SW based RF kill active
8253 */
8254 struct iwl_priv *priv = (struct iwl_priv *)d->driver_data;
8255 int val = (test_bit(STATUS_RF_KILL_SW, &priv->status) ? 0x1 : 0x0) |
8256 (test_bit(STATUS_RF_KILL_HW, &priv->status) ? 0x2 : 0x0);
8257
8258 return sprintf(buf, "%i\n", val);
8259 }
8260
8261 static ssize_t store_rf_kill(struct device *d,
8262 struct device_attribute *attr,
8263 const char *buf, size_t count)
8264 {
8265 struct iwl_priv *priv = (struct iwl_priv *)d->driver_data;
8266
8267 mutex_lock(&priv->mutex);
8268 iwl_radio_kill_sw(priv, buf[0] == '1');
8269 mutex_unlock(&priv->mutex);
8270
8271 return count;
8272 }
8273
8274 static DEVICE_ATTR(rf_kill, S_IWUSR | S_IRUGO, show_rf_kill, store_rf_kill);
8275
8276 static ssize_t show_temperature(struct device *d,
8277 struct device_attribute *attr, char *buf)
8278 {
8279 struct iwl_priv *priv = (struct iwl_priv *)d->driver_data;
8280
8281 if (!iwl_is_alive(priv))
8282 return -EAGAIN;
8283
8284 return sprintf(buf, "%d\n", iwl_hw_get_temperature(priv));
8285 }
8286
8287 static DEVICE_ATTR(temperature, S_IRUGO, show_temperature, NULL);
8288
8289 static ssize_t show_rs_window(struct device *d,
8290 struct device_attribute *attr,
8291 char *buf)
8292 {
8293 struct iwl_priv *priv = d->driver_data;
8294 return iwl_fill_rs_info(priv->hw, buf, IWL_AP_ID);
8295 }
8296 static DEVICE_ATTR(rs_window, S_IRUGO, show_rs_window, NULL);
8297
8298 static ssize_t show_tx_power(struct device *d,
8299 struct device_attribute *attr, char *buf)
8300 {
8301 struct iwl_priv *priv = (struct iwl_priv *)d->driver_data;
8302 return sprintf(buf, "%d\n", priv->user_txpower_limit);
8303 }
8304
8305 static ssize_t store_tx_power(struct device *d,
8306 struct device_attribute *attr,
8307 const char *buf, size_t count)
8308 {
8309 struct iwl_priv *priv = (struct iwl_priv *)d->driver_data;
8310 char *p = (char *)buf;
8311 u32 val;
8312
8313 val = simple_strtoul(p, &p, 10);
8314 if (p == buf)
8315 printk(KERN_INFO DRV_NAME
8316 ": %s is not in decimal form.\n", buf);
8317 else
8318 iwl_hw_reg_set_txpower(priv, val);
8319
8320 return count;
8321 }
8322
8323 static DEVICE_ATTR(tx_power, S_IWUSR | S_IRUGO, show_tx_power, store_tx_power);
8324
8325 static ssize_t show_flags(struct device *d,
8326 struct device_attribute *attr, char *buf)
8327 {
8328 struct iwl_priv *priv = (struct iwl_priv *)d->driver_data;
8329
8330 return sprintf(buf, "0x%04X\n", priv->active_rxon.flags);
8331 }
8332
8333 static ssize_t store_flags(struct device *d,
8334 struct device_attribute *attr,
8335 const char *buf, size_t count)
8336 {
8337 struct iwl_priv *priv = (struct iwl_priv *)d->driver_data;
8338 u32 flags = simple_strtoul(buf, NULL, 0);
8339
8340 mutex_lock(&priv->mutex);
8341 if (le32_to_cpu(priv->staging_rxon.flags) != flags) {
8342 /* Cancel any currently running scans... */
8343 if (iwl_scan_cancel_timeout(priv, 100))
8344 IWL_WARNING("Could not cancel scan.\n");
8345 else {
8346 IWL_DEBUG_INFO("Committing rxon.flags = 0x%04X\n",
8347 flags);
8348 priv->staging_rxon.flags = cpu_to_le32(flags);
8349 iwl_commit_rxon(priv);
8350 }
8351 }
8352 mutex_unlock(&priv->mutex);
8353
8354 return count;
8355 }
8356
8357 static DEVICE_ATTR(flags, S_IWUSR | S_IRUGO, show_flags, store_flags);
8358
8359 static ssize_t show_filter_flags(struct device *d,
8360 struct device_attribute *attr, char *buf)
8361 {
8362 struct iwl_priv *priv = (struct iwl_priv *)d->driver_data;
8363
8364 return sprintf(buf, "0x%04X\n",
8365 le32_to_cpu(priv->active_rxon.filter_flags));
8366 }
8367
8368 static ssize_t store_filter_flags(struct device *d,
8369 struct device_attribute *attr,
8370 const char *buf, size_t count)
8371 {
8372 struct iwl_priv *priv = (struct iwl_priv *)d->driver_data;
8373 u32 filter_flags = simple_strtoul(buf, NULL, 0);
8374
8375 mutex_lock(&priv->mutex);
8376 if (le32_to_cpu(priv->staging_rxon.filter_flags) != filter_flags) {
8377 /* Cancel any currently running scans... */
8378 if (iwl_scan_cancel_timeout(priv, 100))
8379 IWL_WARNING("Could not cancel scan.\n");
8380 else {
8381 IWL_DEBUG_INFO("Committing rxon.filter_flags = "
8382 "0x%04X\n", filter_flags);
8383 priv->staging_rxon.filter_flags =
8384 cpu_to_le32(filter_flags);
8385 iwl_commit_rxon(priv);
8386 }
8387 }
8388 mutex_unlock(&priv->mutex);
8389
8390 return count;
8391 }
8392
8393 static DEVICE_ATTR(filter_flags, S_IWUSR | S_IRUGO, show_filter_flags,
8394 store_filter_flags);
8395
8396 static ssize_t show_tune(struct device *d,
8397 struct device_attribute *attr, char *buf)
8398 {
8399 struct iwl_priv *priv = (struct iwl_priv *)d->driver_data;
8400
8401 return sprintf(buf, "0x%04X\n",
8402 (priv->phymode << 8) |
8403 le16_to_cpu(priv->active_rxon.channel));
8404 }
8405
8406 static void iwl_set_flags_for_phymode(struct iwl_priv *priv, u8 phymode);
8407
8408 static ssize_t store_tune(struct device *d,
8409 struct device_attribute *attr,
8410 const char *buf, size_t count)
8411 {
8412 struct iwl_priv *priv = (struct iwl_priv *)d->driver_data;
8413 char *p = (char *)buf;
8414 u16 tune = simple_strtoul(p, &p, 0);
8415 u8 phymode = (tune >> 8) & 0xff;
8416 u16 channel = tune & 0xff;
8417
8418 IWL_DEBUG_INFO("Tune request to:%d channel:%d\n", phymode, channel);
8419
8420 mutex_lock(&priv->mutex);
8421 if ((le16_to_cpu(priv->staging_rxon.channel) != channel) ||
8422 (priv->phymode != phymode)) {
8423 const struct iwl_channel_info *ch_info;
8424
8425 ch_info = iwl_get_channel_info(priv, phymode, channel);
8426 if (!ch_info) {
8427 IWL_WARNING("Requested invalid phymode/channel "
8428 "combination: %d %d\n", phymode, channel);
8429 mutex_unlock(&priv->mutex);
8430 return -EINVAL;
8431 }
8432
8433 /* Cancel any currently running scans... */
8434 if (iwl_scan_cancel_timeout(priv, 100))
8435 IWL_WARNING("Could not cancel scan.\n");
8436 else {
8437 IWL_DEBUG_INFO("Committing phymode and "
8438 "rxon.channel = %d %d\n",
8439 phymode, channel);
8440
8441 iwl_set_rxon_channel(priv, phymode, channel);
8442 iwl_set_flags_for_phymode(priv, phymode);
8443
8444 iwl_set_rate(priv);
8445 iwl_commit_rxon(priv);
8446 }
8447 }
8448 mutex_unlock(&priv->mutex);
8449
8450 return count;
8451 }
8452
8453 static DEVICE_ATTR(tune, S_IWUSR | S_IRUGO, show_tune, store_tune);
8454
8455 #ifdef CONFIG_IWLWIFI_SPECTRUM_MEASUREMENT
8456
8457 static ssize_t show_measurement(struct device *d,
8458 struct device_attribute *attr, char *buf)
8459 {
8460 struct iwl_priv *priv = dev_get_drvdata(d);
8461 struct iwl_spectrum_notification measure_report;
8462 u32 size = sizeof(measure_report), len = 0, ofs = 0;
8463 u8 *data = (u8 *) & measure_report;
8464 unsigned long flags;
8465
8466 spin_lock_irqsave(&priv->lock, flags);
8467 if (!(priv->measurement_status & MEASUREMENT_READY)) {
8468 spin_unlock_irqrestore(&priv->lock, flags);
8469 return 0;
8470 }
8471 memcpy(&measure_report, &priv->measure_report, size);
8472 priv->measurement_status = 0;
8473 spin_unlock_irqrestore(&priv->lock, flags);
8474
8475 while (size && (PAGE_SIZE - len)) {
8476 hex_dump_to_buffer(data + ofs, size, 16, 1, buf + len,
8477 PAGE_SIZE - len, 1);
8478 len = strlen(buf);
8479 if (PAGE_SIZE - len)
8480 buf[len++] = '\n';
8481
8482 ofs += 16;
8483 size -= min(size, 16U);
8484 }
8485
8486 return len;
8487 }
8488
8489 static ssize_t store_measurement(struct device *d,
8490 struct device_attribute *attr,
8491 const char *buf, size_t count)
8492 {
8493 struct iwl_priv *priv = dev_get_drvdata(d);
8494 struct ieee80211_measurement_params params = {
8495 .channel = le16_to_cpu(priv->active_rxon.channel),
8496 .start_time = cpu_to_le64(priv->last_tsf),
8497 .duration = cpu_to_le16(1),
8498 };
8499 u8 type = IWL_MEASURE_BASIC;
8500 u8 buffer[32];
8501 u8 channel;
8502
8503 if (count) {
8504 char *p = buffer;
8505 strncpy(buffer, buf, min(sizeof(buffer), count));
8506 channel = simple_strtoul(p, NULL, 0);
8507 if (channel)
8508 params.channel = channel;
8509
8510 p = buffer;
8511 while (*p && *p != ' ')
8512 p++;
8513 if (*p)
8514 type = simple_strtoul(p + 1, NULL, 0);
8515 }
8516
8517 IWL_DEBUG_INFO("Invoking measurement of type %d on "
8518 "channel %d (for '%s')\n", type, params.channel, buf);
8519 iwl_get_measurement(priv, &params, type);
8520
8521 return count;
8522 }
8523
8524 static DEVICE_ATTR(measurement, S_IRUSR | S_IWUSR,
8525 show_measurement, store_measurement);
8526 #endif /* CONFIG_IWLWIFI_SPECTRUM_MEASUREMENT */
8527
8528 static ssize_t store_retry_rate(struct device *d,
8529 struct device_attribute *attr,
8530 const char *buf, size_t count)
8531 {
8532 struct iwl_priv *priv = dev_get_drvdata(d);
8533
8534 priv->retry_rate = simple_strtoul(buf, NULL, 0);
8535 if (priv->retry_rate <= 0)
8536 priv->retry_rate = 1;
8537
8538 return count;
8539 }
8540
8541 static ssize_t show_retry_rate(struct device *d,
8542 struct device_attribute *attr, char *buf)
8543 {
8544 struct iwl_priv *priv = dev_get_drvdata(d);
8545 return sprintf(buf, "%d", priv->retry_rate);
8546 }
8547
8548 static DEVICE_ATTR(retry_rate, S_IWUSR | S_IRUSR, show_retry_rate,
8549 store_retry_rate);
8550
8551 static ssize_t store_power_level(struct device *d,
8552 struct device_attribute *attr,
8553 const char *buf, size_t count)
8554 {
8555 struct iwl_priv *priv = dev_get_drvdata(d);
8556 int rc;
8557 int mode;
8558
8559 mode = simple_strtoul(buf, NULL, 0);
8560 mutex_lock(&priv->mutex);
8561
8562 if (!iwl_is_ready(priv)) {
8563 rc = -EAGAIN;
8564 goto out;
8565 }
8566
8567 if ((mode < 1) || (mode > IWL_POWER_LIMIT) || (mode == IWL_POWER_AC))
8568 mode = IWL_POWER_AC;
8569 else
8570 mode |= IWL_POWER_ENABLED;
8571
8572 if (mode != priv->power_mode) {
8573 rc = iwl_send_power_mode(priv, IWL_POWER_LEVEL(mode));
8574 if (rc) {
8575 IWL_DEBUG_MAC80211("failed setting power mode.\n");
8576 goto out;
8577 }
8578 priv->power_mode = mode;
8579 }
8580
8581 rc = count;
8582
8583 out:
8584 mutex_unlock(&priv->mutex);
8585 return rc;
8586 }
8587
8588 #define MAX_WX_STRING 80
8589
8590 /* Values are in microsecond */
8591 static const s32 timeout_duration[] = {
8592 350000,
8593 250000,
8594 75000,
8595 37000,
8596 25000,
8597 };
8598 static const s32 period_duration[] = {
8599 400000,
8600 700000,
8601 1000000,
8602 1000000,
8603 1000000
8604 };
8605
8606 static ssize_t show_power_level(struct device *d,
8607 struct device_attribute *attr, char *buf)
8608 {
8609 struct iwl_priv *priv = dev_get_drvdata(d);
8610 int level = IWL_POWER_LEVEL(priv->power_mode);
8611 char *p = buf;
8612
8613 p += sprintf(p, "%d ", level);
8614 switch (level) {
8615 case IWL_POWER_MODE_CAM:
8616 case IWL_POWER_AC:
8617 p += sprintf(p, "(AC)");
8618 break;
8619 case IWL_POWER_BATTERY:
8620 p += sprintf(p, "(BATTERY)");
8621 break;
8622 default:
8623 p += sprintf(p,
8624 "(Timeout %dms, Period %dms)",
8625 timeout_duration[level - 1] / 1000,
8626 period_duration[level - 1] / 1000);
8627 }
8628
8629 if (!(priv->power_mode & IWL_POWER_ENABLED))
8630 p += sprintf(p, " OFF\n");
8631 else
8632 p += sprintf(p, " \n");
8633
8634 return (p - buf + 1);
8635
8636 }
8637
8638 static DEVICE_ATTR(power_level, S_IWUSR | S_IRUSR, show_power_level,
8639 store_power_level);
8640
8641 static ssize_t show_channels(struct device *d,
8642 struct device_attribute *attr, char *buf)
8643 {
8644 struct iwl_priv *priv = dev_get_drvdata(d);
8645 int len = 0, i;
8646 struct ieee80211_channel *channels = NULL;
8647 const struct ieee80211_hw_mode *hw_mode = NULL;
8648 int count = 0;
8649
8650 if (!iwl_is_ready(priv))
8651 return -EAGAIN;
8652
8653 hw_mode = iwl_get_hw_mode(priv, MODE_IEEE80211G);
8654 if (!hw_mode)
8655 hw_mode = iwl_get_hw_mode(priv, MODE_IEEE80211B);
8656 if (hw_mode) {
8657 channels = hw_mode->channels;
8658 count = hw_mode->num_channels;
8659 }
8660
8661 len +=
8662 sprintf(&buf[len],
8663 "Displaying %d channels in 2.4GHz band "
8664 "(802.11bg):\n", count);
8665
8666 for (i = 0; i < count; i++)
8667 len += sprintf(&buf[len], "%d: %ddBm: BSS%s%s, %s.\n",
8668 channels[i].chan,
8669 channels[i].power_level,
8670 channels[i].
8671 flag & IEEE80211_CHAN_W_RADAR_DETECT ?
8672 " (IEEE 802.11h required)" : "",
8673 (!(channels[i].flag & IEEE80211_CHAN_W_IBSS)
8674 || (channels[i].
8675 flag &
8676 IEEE80211_CHAN_W_RADAR_DETECT)) ? "" :
8677 ", IBSS",
8678 channels[i].
8679 flag & IEEE80211_CHAN_W_ACTIVE_SCAN ?
8680 "active/passive" : "passive only");
8681
8682 hw_mode = iwl_get_hw_mode(priv, MODE_IEEE80211A);
8683 if (hw_mode) {
8684 channels = hw_mode->channels;
8685 count = hw_mode->num_channels;
8686 } else {
8687 channels = NULL;
8688 count = 0;
8689 }
8690
8691 len += sprintf(&buf[len], "Displaying %d channels in 5.2GHz band "
8692 "(802.11a):\n", count);
8693
8694 for (i = 0; i < count; i++)
8695 len += sprintf(&buf[len], "%d: %ddBm: BSS%s%s, %s.\n",
8696 channels[i].chan,
8697 channels[i].power_level,
8698 channels[i].
8699 flag & IEEE80211_CHAN_W_RADAR_DETECT ?
8700 " (IEEE 802.11h required)" : "",
8701 (!(channels[i].flag & IEEE80211_CHAN_W_IBSS)
8702 || (channels[i].
8703 flag &
8704 IEEE80211_CHAN_W_RADAR_DETECT)) ? "" :
8705 ", IBSS",
8706 channels[i].
8707 flag & IEEE80211_CHAN_W_ACTIVE_SCAN ?
8708 "active/passive" : "passive only");
8709
8710 return len;
8711 }
8712
8713 static DEVICE_ATTR(channels, S_IRUSR, show_channels, NULL);
8714
8715 static ssize_t show_statistics(struct device *d,
8716 struct device_attribute *attr, char *buf)
8717 {
8718 struct iwl_priv *priv = dev_get_drvdata(d);
8719 u32 size = sizeof(struct iwl_notif_statistics);
8720 u32 len = 0, ofs = 0;
8721 u8 *data = (u8 *) & priv->statistics;
8722 int rc = 0;
8723
8724 if (!iwl_is_alive(priv))
8725 return -EAGAIN;
8726
8727 mutex_lock(&priv->mutex);
8728 rc = iwl_send_statistics_request(priv);
8729 mutex_unlock(&priv->mutex);
8730
8731 if (rc) {
8732 len = sprintf(buf,
8733 "Error sending statistics request: 0x%08X\n", rc);
8734 return len;
8735 }
8736
8737 while (size && (PAGE_SIZE - len)) {
8738 hex_dump_to_buffer(data + ofs, size, 16, 1, buf + len,
8739 PAGE_SIZE - len, 1);
8740 len = strlen(buf);
8741 if (PAGE_SIZE - len)
8742 buf[len++] = '\n';
8743
8744 ofs += 16;
8745 size -= min(size, 16U);
8746 }
8747
8748 return len;
8749 }
8750
8751 static DEVICE_ATTR(statistics, S_IRUGO, show_statistics, NULL);
8752
8753 static ssize_t show_antenna(struct device *d,
8754 struct device_attribute *attr, char *buf)
8755 {
8756 struct iwl_priv *priv = dev_get_drvdata(d);
8757
8758 if (!iwl_is_alive(priv))
8759 return -EAGAIN;
8760
8761 return sprintf(buf, "%d\n", priv->antenna);
8762 }
8763
8764 static ssize_t store_antenna(struct device *d,
8765 struct device_attribute *attr,
8766 const char *buf, size_t count)
8767 {
8768 int ant;
8769 struct iwl_priv *priv = dev_get_drvdata(d);
8770
8771 if (count == 0)
8772 return 0;
8773
8774 if (sscanf(buf, "%1i", &ant) != 1) {
8775 IWL_DEBUG_INFO("not in hex or decimal form.\n");
8776 return count;
8777 }
8778
8779 if ((ant >= 0) && (ant <= 2)) {
8780 IWL_DEBUG_INFO("Setting antenna select to %d.\n", ant);
8781 priv->antenna = (enum iwl_antenna)ant;
8782 } else
8783 IWL_DEBUG_INFO("Bad antenna select value %d.\n", ant);
8784
8785
8786 return count;
8787 }
8788
8789 static DEVICE_ATTR(antenna, S_IWUSR | S_IRUGO, show_antenna, store_antenna);
8790
8791 static ssize_t show_status(struct device *d,
8792 struct device_attribute *attr, char *buf)
8793 {
8794 struct iwl_priv *priv = (struct iwl_priv *)d->driver_data;
8795 if (!iwl_is_alive(priv))
8796 return -EAGAIN;
8797 return sprintf(buf, "0x%08x\n", (int)priv->status);
8798 }
8799
8800 static DEVICE_ATTR(status, S_IRUGO, show_status, NULL);
8801
8802 static ssize_t dump_error_log(struct device *d,
8803 struct device_attribute *attr,
8804 const char *buf, size_t count)
8805 {
8806 char *p = (char *)buf;
8807
8808 if (p[0] == '1')
8809 iwl_dump_nic_error_log((struct iwl_priv *)d->driver_data);
8810
8811 return strnlen(buf, count);
8812 }
8813
8814 static DEVICE_ATTR(dump_errors, S_IWUSR, NULL, dump_error_log);
8815
8816 static ssize_t dump_event_log(struct device *d,
8817 struct device_attribute *attr,
8818 const char *buf, size_t count)
8819 {
8820 char *p = (char *)buf;
8821
8822 if (p[0] == '1')
8823 iwl_dump_nic_event_log((struct iwl_priv *)d->driver_data);
8824
8825 return strnlen(buf, count);
8826 }
8827
8828 static DEVICE_ATTR(dump_events, S_IWUSR, NULL, dump_event_log);
8829
8830 /*****************************************************************************
8831 *
8832 * driver setup and teardown
8833 *
8834 *****************************************************************************/
8835
8836 static void iwl_setup_deferred_work(struct iwl_priv *priv)
8837 {
8838 priv->workqueue = create_workqueue(DRV_NAME);
8839
8840 init_waitqueue_head(&priv->wait_command_queue);
8841
8842 INIT_WORK(&priv->up, iwl_bg_up);
8843 INIT_WORK(&priv->restart, iwl_bg_restart);
8844 INIT_WORK(&priv->rx_replenish, iwl_bg_rx_replenish);
8845 INIT_WORK(&priv->scan_completed, iwl_bg_scan_completed);
8846 INIT_WORK(&priv->request_scan, iwl_bg_request_scan);
8847 INIT_WORK(&priv->abort_scan, iwl_bg_abort_scan);
8848 INIT_WORK(&priv->rf_kill, iwl_bg_rf_kill);
8849 INIT_WORK(&priv->beacon_update, iwl_bg_beacon_update);
8850 INIT_DELAYED_WORK(&priv->post_associate, iwl_bg_post_associate);
8851 INIT_DELAYED_WORK(&priv->init_alive_start, iwl_bg_init_alive_start);
8852 INIT_DELAYED_WORK(&priv->alive_start, iwl_bg_alive_start);
8853 INIT_DELAYED_WORK(&priv->scan_check, iwl_bg_scan_check);
8854
8855 iwl_hw_setup_deferred_work(priv);
8856
8857 tasklet_init(&priv->irq_tasklet, (void (*)(unsigned long))
8858 iwl_irq_tasklet, (unsigned long)priv);
8859 }
8860
8861 static void iwl_cancel_deferred_work(struct iwl_priv *priv)
8862 {
8863 iwl_hw_cancel_deferred_work(priv);
8864
8865 cancel_delayed_work(&priv->scan_check);
8866 cancel_delayed_work(&priv->alive_start);
8867 cancel_delayed_work(&priv->post_associate);
8868 cancel_work_sync(&priv->beacon_update);
8869 }
8870
8871 static struct attribute *iwl_sysfs_entries[] = {
8872 &dev_attr_antenna.attr,
8873 &dev_attr_channels.attr,
8874 &dev_attr_dump_errors.attr,
8875 &dev_attr_dump_events.attr,
8876 &dev_attr_flags.attr,
8877 &dev_attr_filter_flags.attr,
8878 #ifdef CONFIG_IWLWIFI_SPECTRUM_MEASUREMENT
8879 &dev_attr_measurement.attr,
8880 #endif
8881 &dev_attr_power_level.attr,
8882 &dev_attr_retry_rate.attr,
8883 &dev_attr_rf_kill.attr,
8884 &dev_attr_rs_window.attr,
8885 &dev_attr_statistics.attr,
8886 &dev_attr_status.attr,
8887 &dev_attr_temperature.attr,
8888 &dev_attr_tune.attr,
8889 &dev_attr_tx_power.attr,
8890
8891 NULL
8892 };
8893
8894 static struct attribute_group iwl_attribute_group = {
8895 .name = NULL, /* put in device directory */
8896 .attrs = iwl_sysfs_entries,
8897 };
8898
8899 static struct ieee80211_ops iwl_hw_ops = {
8900 .tx = iwl_mac_tx,
8901 .start = iwl_mac_start,
8902 .stop = iwl_mac_stop,
8903 .add_interface = iwl_mac_add_interface,
8904 .remove_interface = iwl_mac_remove_interface,
8905 .config = iwl_mac_config,
8906 .config_interface = iwl_mac_config_interface,
8907 .configure_filter = iwl_configure_filter,
8908 .set_key = iwl_mac_set_key,
8909 .get_stats = iwl_mac_get_stats,
8910 .get_tx_stats = iwl_mac_get_tx_stats,
8911 .conf_tx = iwl_mac_conf_tx,
8912 .get_tsf = iwl_mac_get_tsf,
8913 .reset_tsf = iwl_mac_reset_tsf,
8914 .beacon_update = iwl_mac_beacon_update,
8915 #ifdef CONFIG_IWLWIFI_HT
8916 .conf_ht = iwl_mac_conf_ht,
8917 .get_ht_capab = iwl_mac_get_ht_capab,
8918 #ifdef CONFIG_IWLWIFI_HT_AGG
8919 .ht_tx_agg_start = iwl_mac_ht_tx_agg_start,
8920 .ht_tx_agg_stop = iwl_mac_ht_tx_agg_stop,
8921 .ht_rx_agg_start = iwl_mac_ht_rx_agg_start,
8922 .ht_rx_agg_stop = iwl_mac_ht_rx_agg_stop,
8923 #endif /* CONFIG_IWLWIFI_HT_AGG */
8924 #endif /* CONFIG_IWLWIFI_HT */
8925 .hw_scan = iwl_mac_hw_scan
8926 };
8927
8928 static int iwl_pci_probe(struct pci_dev *pdev, const struct pci_device_id *ent)
8929 {
8930 int err = 0;
8931 struct iwl_priv *priv;
8932 struct ieee80211_hw *hw;
8933 int i;
8934
8935 if (iwl_param_disable_hw_scan) {
8936 IWL_DEBUG_INFO("Disabling hw_scan\n");
8937 iwl_hw_ops.hw_scan = NULL;
8938 }
8939
8940 if ((iwl_param_queues_num > IWL_MAX_NUM_QUEUES) ||
8941 (iwl_param_queues_num < IWL_MIN_NUM_QUEUES)) {
8942 IWL_ERROR("invalid queues_num, should be between %d and %d\n",
8943 IWL_MIN_NUM_QUEUES, IWL_MAX_NUM_QUEUES);
8944 err = -EINVAL;
8945 goto out;
8946 }
8947
8948 /* mac80211 allocates memory for this device instance, including
8949 * space for this driver's private structure */
8950 hw = ieee80211_alloc_hw(sizeof(struct iwl_priv), &iwl_hw_ops);
8951 if (hw == NULL) {
8952 IWL_ERROR("Can not allocate network device\n");
8953 err = -ENOMEM;
8954 goto out;
8955 }
8956 SET_IEEE80211_DEV(hw, &pdev->dev);
8957
8958 hw->rate_control_algorithm = "iwl-4965-rs";
8959
8960 IWL_DEBUG_INFO("*** LOAD DRIVER ***\n");
8961 priv = hw->priv;
8962 priv->hw = hw;
8963
8964 priv->pci_dev = pdev;
8965 priv->antenna = (enum iwl_antenna)iwl_param_antenna;
8966 #ifdef CONFIG_IWLWIFI_DEBUG
8967 iwl_debug_level = iwl_param_debug;
8968 atomic_set(&priv->restrict_refcnt, 0);
8969 #endif
8970 priv->retry_rate = 1;
8971
8972 priv->ibss_beacon = NULL;
8973
8974 /* Tell mac80211 and its clients (e.g. Wireless Extensions)
8975 * the range of signal quality values that we'll provide.
8976 * Negative values for level/noise indicate that we'll provide dBm.
8977 * For WE, at least, non-0 values here *enable* display of values
8978 * in app (iwconfig). */
8979 hw->max_rssi = -20; /* signal level, negative indicates dBm */
8980 hw->max_noise = -20; /* noise level, negative indicates dBm */
8981 hw->max_signal = 100; /* link quality indication (%) */
8982
8983 /* Tell mac80211 our Tx characteristics */
8984 hw->flags = IEEE80211_HW_HOST_GEN_BEACON_TEMPLATE;
8985
8986 hw->queues = 4;
8987 #ifdef CONFIG_IWLWIFI_HT
8988 #ifdef CONFIG_IWLWIFI_HT_AGG
8989 hw->queues = 16;
8990 #endif /* CONFIG_IWLWIFI_HT_AGG */
8991 #endif /* CONFIG_IWLWIFI_HT */
8992
8993 spin_lock_init(&priv->lock);
8994 spin_lock_init(&priv->power_data.lock);
8995 spin_lock_init(&priv->sta_lock);
8996 spin_lock_init(&priv->hcmd_lock);
8997 spin_lock_init(&priv->lq_mngr.lock);
8998
8999 for (i = 0; i < IWL_IBSS_MAC_HASH_SIZE; i++)
9000 INIT_LIST_HEAD(&priv->ibss_mac_hash[i]);
9001
9002 INIT_LIST_HEAD(&priv->free_frames);
9003
9004 mutex_init(&priv->mutex);
9005 if (pci_enable_device(pdev)) {
9006 err = -ENODEV;
9007 goto out_ieee80211_free_hw;
9008 }
9009
9010 pci_set_master(pdev);
9011
9012 iwl_clear_stations_table(priv);
9013
9014 priv->data_retry_limit = -1;
9015 priv->ieee_channels = NULL;
9016 priv->ieee_rates = NULL;
9017 priv->phymode = -1;
9018
9019 err = pci_set_dma_mask(pdev, DMA_32BIT_MASK);
9020 if (!err)
9021 err = pci_set_consistent_dma_mask(pdev, DMA_32BIT_MASK);
9022 if (err) {
9023 printk(KERN_WARNING DRV_NAME ": No suitable DMA available.\n");
9024 goto out_pci_disable_device;
9025 }
9026
9027 pci_set_drvdata(pdev, priv);
9028 err = pci_request_regions(pdev, DRV_NAME);
9029 if (err)
9030 goto out_pci_disable_device;
9031 /* We disable the RETRY_TIMEOUT register (0x41) to keep
9032 * PCI Tx retries from interfering with C3 CPU state */
9033 pci_write_config_byte(pdev, 0x41, 0x00);
9034 priv->hw_base = pci_iomap(pdev, 0, 0);
9035 if (!priv->hw_base) {
9036 err = -ENODEV;
9037 goto out_pci_release_regions;
9038 }
9039
9040 IWL_DEBUG_INFO("pci_resource_len = 0x%08llx\n",
9041 (unsigned long long) pci_resource_len(pdev, 0));
9042 IWL_DEBUG_INFO("pci_resource_base = %p\n", priv->hw_base);
9043
9044 /* Initialize module parameter values here */
9045
9046 if (iwl_param_disable) {
9047 set_bit(STATUS_RF_KILL_SW, &priv->status);
9048 IWL_DEBUG_INFO("Radio disabled.\n");
9049 }
9050
9051 priv->iw_mode = IEEE80211_IF_TYPE_STA;
9052
9053 priv->ps_mode = 0;
9054 priv->use_ant_b_for_management_frame = 1; /* start with ant B */
9055 priv->is_ht_enabled = 1;
9056 priv->channel_width = IWL_CHANNEL_WIDTH_40MHZ;
9057 priv->valid_antenna = 0x7; /* assume all 3 connected */
9058 priv->ps_mode = IWL_MIMO_PS_NONE;
9059 priv->cck_power_index_compensation = iwl_read32(
9060 priv, CSR_HW_REV_WA_REG);
9061
9062 iwl4965_set_rxon_chain(priv);
9063
9064 printk(KERN_INFO DRV_NAME
9065 ": Detected Intel Wireless WiFi Link 4965AGN\n");
9066
9067 /* Device-specific setup */
9068 if (iwl_hw_set_hw_setting(priv)) {
9069 IWL_ERROR("failed to set hw settings\n");
9070 mutex_unlock(&priv->mutex);
9071 goto out_iounmap;
9072 }
9073
9074 #ifdef CONFIG_IWLWIFI_QOS
9075 if (iwl_param_qos_enable)
9076 priv->qos_data.qos_enable = 1;
9077
9078 iwl_reset_qos(priv);
9079
9080 priv->qos_data.qos_active = 0;
9081 priv->qos_data.qos_cap.val = 0;
9082 #endif /* CONFIG_IWLWIFI_QOS */
9083
9084 iwl_set_rxon_channel(priv, MODE_IEEE80211G, 6);
9085 iwl_setup_deferred_work(priv);
9086 iwl_setup_rx_handlers(priv);
9087
9088 priv->rates_mask = IWL_RATES_MASK;
9089 /* If power management is turned on, default to AC mode */
9090 priv->power_mode = IWL_POWER_AC;
9091 priv->user_txpower_limit = IWL_DEFAULT_TX_POWER;
9092
9093 pci_enable_msi(pdev);
9094
9095 err = request_irq(pdev->irq, iwl_isr, IRQF_SHARED, DRV_NAME, priv);
9096 if (err) {
9097 IWL_ERROR("Error allocating IRQ %d\n", pdev->irq);
9098 goto out_disable_msi;
9099 }
9100
9101 mutex_lock(&priv->mutex);
9102
9103 err = sysfs_create_group(&pdev->dev.kobj, &iwl_attribute_group);
9104 if (err) {
9105 IWL_ERROR("failed to create sysfs device attributes\n");
9106 mutex_unlock(&priv->mutex);
9107 goto out_release_irq;
9108 }
9109
9110 /* fetch ucode file from disk, alloc and copy to bus-master buffers ...
9111 * ucode filename and max sizes are card-specific. */
9112 err = iwl_read_ucode(priv);
9113 if (err) {
9114 IWL_ERROR("Could not read microcode: %d\n", err);
9115 mutex_unlock(&priv->mutex);
9116 goto out_pci_alloc;
9117 }
9118
9119 mutex_unlock(&priv->mutex);
9120
9121 IWL_DEBUG_INFO("Queing UP work.\n");
9122
9123 queue_work(priv->workqueue, &priv->up);
9124
9125 return 0;
9126
9127 out_pci_alloc:
9128 iwl_dealloc_ucode_pci(priv);
9129
9130 sysfs_remove_group(&pdev->dev.kobj, &iwl_attribute_group);
9131
9132 out_release_irq:
9133 free_irq(pdev->irq, priv);
9134
9135 out_disable_msi:
9136 pci_disable_msi(pdev);
9137 destroy_workqueue(priv->workqueue);
9138 priv->workqueue = NULL;
9139 iwl_unset_hw_setting(priv);
9140
9141 out_iounmap:
9142 pci_iounmap(pdev, priv->hw_base);
9143 out_pci_release_regions:
9144 pci_release_regions(pdev);
9145 out_pci_disable_device:
9146 pci_disable_device(pdev);
9147 pci_set_drvdata(pdev, NULL);
9148 out_ieee80211_free_hw:
9149 ieee80211_free_hw(priv->hw);
9150 out:
9151 return err;
9152 }
9153
9154 static void iwl_pci_remove(struct pci_dev *pdev)
9155 {
9156 struct iwl_priv *priv = pci_get_drvdata(pdev);
9157 struct list_head *p, *q;
9158 int i;
9159
9160 if (!priv)
9161 return;
9162
9163 IWL_DEBUG_INFO("*** UNLOAD DRIVER ***\n");
9164
9165 mutex_lock(&priv->mutex);
9166 set_bit(STATUS_EXIT_PENDING, &priv->status);
9167 __iwl_down(priv);
9168 mutex_unlock(&priv->mutex);
9169
9170 /* Free MAC hash list for ADHOC */
9171 for (i = 0; i < IWL_IBSS_MAC_HASH_SIZE; i++) {
9172 list_for_each_safe(p, q, &priv->ibss_mac_hash[i]) {
9173 list_del(p);
9174 kfree(list_entry(p, struct iwl_ibss_seq, list));
9175 }
9176 }
9177
9178 sysfs_remove_group(&pdev->dev.kobj, &iwl_attribute_group);
9179
9180 iwl_dealloc_ucode_pci(priv);
9181
9182 if (priv->rxq.bd)
9183 iwl_rx_queue_free(priv, &priv->rxq);
9184 iwl_hw_txq_ctx_free(priv);
9185
9186 iwl_unset_hw_setting(priv);
9187 iwl_clear_stations_table(priv);
9188
9189 if (priv->mac80211_registered) {
9190 ieee80211_unregister_hw(priv->hw);
9191 iwl_rate_control_unregister(priv->hw);
9192 }
9193
9194 /*netif_stop_queue(dev); */
9195 flush_workqueue(priv->workqueue);
9196
9197 /* ieee80211_unregister_hw calls iwl_mac_stop, which flushes
9198 * priv->workqueue... so we can't take down the workqueue
9199 * until now... */
9200 destroy_workqueue(priv->workqueue);
9201 priv->workqueue = NULL;
9202
9203 free_irq(pdev->irq, priv);
9204 pci_disable_msi(pdev);
9205 pci_iounmap(pdev, priv->hw_base);
9206 pci_release_regions(pdev);
9207 pci_disable_device(pdev);
9208 pci_set_drvdata(pdev, NULL);
9209
9210 kfree(priv->channel_info);
9211
9212 kfree(priv->ieee_channels);
9213 kfree(priv->ieee_rates);
9214
9215 if (priv->ibss_beacon)
9216 dev_kfree_skb(priv->ibss_beacon);
9217
9218 ieee80211_free_hw(priv->hw);
9219 }
9220
9221 #ifdef CONFIG_PM
9222
9223 static int iwl_pci_suspend(struct pci_dev *pdev, pm_message_t state)
9224 {
9225 struct iwl_priv *priv = pci_get_drvdata(pdev);
9226
9227 mutex_lock(&priv->mutex);
9228
9229 set_bit(STATUS_IN_SUSPEND, &priv->status);
9230
9231 /* Take down the device; powers it off, etc. */
9232 __iwl_down(priv);
9233
9234 if (priv->mac80211_registered)
9235 ieee80211_stop_queues(priv->hw);
9236
9237 pci_save_state(pdev);
9238 pci_disable_device(pdev);
9239 pci_set_power_state(pdev, PCI_D3hot);
9240
9241 mutex_unlock(&priv->mutex);
9242
9243 return 0;
9244 }
9245
9246 static void iwl_resume(struct iwl_priv *priv)
9247 {
9248 unsigned long flags;
9249
9250 /* The following it a temporary work around due to the
9251 * suspend / resume not fully initializing the NIC correctly.
9252 * Without all of the following, resume will not attempt to take
9253 * down the NIC (it shouldn't really need to) and will just try
9254 * and bring the NIC back up. However that fails during the
9255 * ucode verification process. This then causes iwl_down to be
9256 * called *after* iwl_hw_nic_init() has succeeded -- which
9257 * then lets the next init sequence succeed. So, we've
9258 * replicated all of that NIC init code here... */
9259
9260 iwl_write32(priv, CSR_INT, 0xFFFFFFFF);
9261
9262 iwl_hw_nic_init(priv);
9263
9264 iwl_write32(priv, CSR_UCODE_DRV_GP1_CLR, CSR_UCODE_SW_BIT_RFKILL);
9265 iwl_write32(priv, CSR_UCODE_DRV_GP1_CLR,
9266 CSR_UCODE_DRV_GP1_BIT_CMD_BLOCKED);
9267 iwl_write32(priv, CSR_INT, 0xFFFFFFFF);
9268 iwl_write32(priv, CSR_UCODE_DRV_GP1_CLR, CSR_UCODE_SW_BIT_RFKILL);
9269 iwl_write32(priv, CSR_UCODE_DRV_GP1_CLR, CSR_UCODE_SW_BIT_RFKILL);
9270
9271 /* tell the device to stop sending interrupts */
9272 iwl_disable_interrupts(priv);
9273
9274 spin_lock_irqsave(&priv->lock, flags);
9275 iwl_clear_bit(priv, CSR_GP_CNTRL, CSR_GP_CNTRL_REG_FLAG_MAC_ACCESS_REQ);
9276
9277 if (!iwl_grab_restricted_access(priv)) {
9278 iwl_write_restricted_reg(priv, APMG_CLK_DIS_REG,
9279 APMG_CLK_VAL_DMA_CLK_RQT);
9280 iwl_release_restricted_access(priv);
9281 }
9282 spin_unlock_irqrestore(&priv->lock, flags);
9283
9284 udelay(5);
9285
9286 iwl_hw_nic_reset(priv);
9287
9288 /* Bring the device back up */
9289 clear_bit(STATUS_IN_SUSPEND, &priv->status);
9290 queue_work(priv->workqueue, &priv->up);
9291 }
9292
9293 static int iwl_pci_resume(struct pci_dev *pdev)
9294 {
9295 struct iwl_priv *priv = pci_get_drvdata(pdev);
9296 int err;
9297
9298 printk(KERN_INFO "Coming out of suspend...\n");
9299
9300 mutex_lock(&priv->mutex);
9301
9302 pci_set_power_state(pdev, PCI_D0);
9303 err = pci_enable_device(pdev);
9304 pci_restore_state(pdev);
9305
9306 /*
9307 * Suspend/Resume resets the PCI configuration space, so we have to
9308 * re-disable the RETRY_TIMEOUT register (0x41) to keep PCI Tx retries
9309 * from interfering with C3 CPU state. pci_restore_state won't help
9310 * here since it only restores the first 64 bytes pci config header.
9311 */
9312 pci_write_config_byte(pdev, 0x41, 0x00);
9313
9314 iwl_resume(priv);
9315 mutex_unlock(&priv->mutex);
9316
9317 return 0;
9318 }
9319
9320 #endif /* CONFIG_PM */
9321
9322 /*****************************************************************************
9323 *
9324 * driver and module entry point
9325 *
9326 *****************************************************************************/
9327
9328 static struct pci_driver iwl_driver = {
9329 .name = DRV_NAME,
9330 .id_table = iwl_hw_card_ids,
9331 .probe = iwl_pci_probe,
9332 .remove = __devexit_p(iwl_pci_remove),
9333 #ifdef CONFIG_PM
9334 .suspend = iwl_pci_suspend,
9335 .resume = iwl_pci_resume,
9336 #endif
9337 };
9338
9339 static int __init iwl_init(void)
9340 {
9341
9342 int ret;
9343 printk(KERN_INFO DRV_NAME ": " DRV_DESCRIPTION ", " DRV_VERSION "\n");
9344 printk(KERN_INFO DRV_NAME ": " DRV_COPYRIGHT "\n");
9345 ret = pci_register_driver(&iwl_driver);
9346 if (ret) {
9347 IWL_ERROR("Unable to initialize PCI module\n");
9348 return ret;
9349 }
9350 #ifdef CONFIG_IWLWIFI_DEBUG
9351 ret = driver_create_file(&iwl_driver.driver, &driver_attr_debug_level);
9352 if (ret) {
9353 IWL_ERROR("Unable to create driver sysfs file\n");
9354 pci_unregister_driver(&iwl_driver);
9355 return ret;
9356 }
9357 #endif
9358
9359 return ret;
9360 }
9361
9362 static void __exit iwl_exit(void)
9363 {
9364 #ifdef CONFIG_IWLWIFI_DEBUG
9365 driver_remove_file(&iwl_driver.driver, &driver_attr_debug_level);
9366 #endif
9367 pci_unregister_driver(&iwl_driver);
9368 }
9369
9370 module_param_named(antenna, iwl_param_antenna, int, 0444);
9371 MODULE_PARM_DESC(antenna, "select antenna (1=Main, 2=Aux, default 0 [both])");
9372 module_param_named(disable, iwl_param_disable, int, 0444);
9373 MODULE_PARM_DESC(disable, "manually disable the radio (default 0 [radio on])");
9374 module_param_named(hwcrypto, iwl_param_hwcrypto, int, 0444);
9375 MODULE_PARM_DESC(hwcrypto,
9376 "using hardware crypto engine (default 0 [software])\n");
9377 module_param_named(debug, iwl_param_debug, int, 0444);
9378 MODULE_PARM_DESC(debug, "debug output mask");
9379 module_param_named(disable_hw_scan, iwl_param_disable_hw_scan, int, 0444);
9380 MODULE_PARM_DESC(disable_hw_scan, "disable hardware scanning (default 0)");
9381
9382 module_param_named(queues_num, iwl_param_queues_num, int, 0444);
9383 MODULE_PARM_DESC(queues_num, "number of hw queues.");
9384
9385 /* QoS */
9386 module_param_named(qos_enable, iwl_param_qos_enable, int, 0444);
9387 MODULE_PARM_DESC(qos_enable, "enable all QoS functionality");
9388
9389 module_exit(iwl_exit);
9390 module_init(iwl_init);
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