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iwlwifi: 802.11n spec removes AUTO offset for FAT channel
[deliverable/linux.git] / drivers / net / wireless / iwlwifi / iwl4965-base.c
1 /******************************************************************************
2 *
3 * Copyright(c) 2003 - 2007 Intel Corporation. All rights reserved.
4 *
5 * Portions of this file are derived from the ipw3945 project, as well
6 * as portions of the ieee80211 subsystem header files.
7 *
8 * This program is free software; you can redistribute it and/or modify it
9 * under the terms of version 2 of the GNU General Public License as
10 * published by the Free Software Foundation.
11 *
12 * This program is distributed in the hope that it will be useful, but WITHOUT
13 * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
14 * FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License for
15 * more details.
16 *
17 * You should have received a copy of the GNU General Public License along with
18 * this program; if not, write to the Free Software Foundation, Inc.,
19 * 51 Franklin Street, Fifth Floor, Boston, MA 02110, USA
20 *
21 * The full GNU General Public License is included in this distribution in the
22 * file called LICENSE.
23 *
24 * Contact Information:
25 * James P. Ketrenos <ipw2100-admin@linux.intel.com>
26 * Intel Corporation, 5200 N.E. Elam Young Parkway, Hillsboro, OR 97124-6497
27 *
28 *****************************************************************************/
29
30 #include <linux/kernel.h>
31 #include <linux/module.h>
32 #include <linux/version.h>
33 #include <linux/init.h>
34 #include <linux/pci.h>
35 #include <linux/dma-mapping.h>
36 #include <linux/delay.h>
37 #include <linux/skbuff.h>
38 #include <linux/netdevice.h>
39 #include <linux/wireless.h>
40 #include <linux/firmware.h>
41 #include <linux/etherdevice.h>
42 #include <linux/if_arp.h>
43
44 #include <net/mac80211.h>
45
46 #include <asm/div64.h>
47
48 #include "iwl-4965.h"
49 #include "iwl-helpers.h"
50
51 #ifdef CONFIG_IWL4965_DEBUG
52 u32 iwl4965_debug_level;
53 #endif
54
55 static int iwl4965_tx_queue_update_write_ptr(struct iwl4965_priv *priv,
56 struct iwl4965_tx_queue *txq);
57
58 /******************************************************************************
59 *
60 * module boiler plate
61 *
62 ******************************************************************************/
63
64 /* module parameters */
65 static int iwl4965_param_disable_hw_scan; /* def: 0 = use 4965's h/w scan */
66 static int iwl4965_param_debug; /* def: 0 = minimal debug log messages */
67 static int iwl4965_param_disable; /* def: enable radio */
68 static int iwl4965_param_antenna; /* def: 0 = both antennas (use diversity) */
69 int iwl4965_param_hwcrypto; /* def: using software encryption */
70 static int iwl4965_param_qos_enable = 1; /* def: 1 = use quality of service */
71 int iwl4965_param_queues_num = IWL_MAX_NUM_QUEUES; /* def: 16 Tx queues */
72 int iwl4965_param_amsdu_size_8K; /* def: enable 8K amsdu size */
73
74 /*
75 * module name, copyright, version, etc.
76 * NOTE: DRV_NAME is defined in iwlwifi.h for use by iwl-debug.h and printk
77 */
78
79 #define DRV_DESCRIPTION "Intel(R) Wireless WiFi Link 4965AGN driver for Linux"
80
81 #ifdef CONFIG_IWL4965_DEBUG
82 #define VD "d"
83 #else
84 #define VD
85 #endif
86
87 #ifdef CONFIG_IWL4965_SPECTRUM_MEASUREMENT
88 #define VS "s"
89 #else
90 #define VS
91 #endif
92
93 #define IWLWIFI_VERSION "1.2.26k" VD VS
94 #define DRV_COPYRIGHT "Copyright(c) 2003-2007 Intel Corporation"
95 #define DRV_VERSION IWLWIFI_VERSION
96
97 /* Change firmware file name, using "-" and incrementing number,
98 * *only* when uCode interface or architecture changes so that it
99 * is not compatible with earlier drivers.
100 * This number will also appear in << 8 position of 1st dword of uCode file */
101 #define IWL4965_UCODE_API "-1"
102
103 MODULE_DESCRIPTION(DRV_DESCRIPTION);
104 MODULE_VERSION(DRV_VERSION);
105 MODULE_AUTHOR(DRV_COPYRIGHT);
106 MODULE_LICENSE("GPL");
107
108 __le16 *ieee80211_get_qos_ctrl(struct ieee80211_hdr *hdr)
109 {
110 u16 fc = le16_to_cpu(hdr->frame_control);
111 int hdr_len = ieee80211_get_hdrlen(fc);
112
113 if ((fc & 0x00cc) == (IEEE80211_STYPE_QOS_DATA | IEEE80211_FTYPE_DATA))
114 return (__le16 *) ((u8 *) hdr + hdr_len - QOS_CONTROL_LEN);
115 return NULL;
116 }
117
118 static const struct ieee80211_supported_band *iwl4965_get_hw_mode(
119 struct iwl4965_priv *priv, enum ieee80211_band band)
120 {
121 return priv->hw->wiphy->bands[band];
122 }
123
124 static int iwl4965_is_empty_essid(const char *essid, int essid_len)
125 {
126 /* Single white space is for Linksys APs */
127 if (essid_len == 1 && essid[0] == ' ')
128 return 1;
129
130 /* Otherwise, if the entire essid is 0, we assume it is hidden */
131 while (essid_len) {
132 essid_len--;
133 if (essid[essid_len] != '\0')
134 return 0;
135 }
136
137 return 1;
138 }
139
140 static const char *iwl4965_escape_essid(const char *essid, u8 essid_len)
141 {
142 static char escaped[IW_ESSID_MAX_SIZE * 2 + 1];
143 const char *s = essid;
144 char *d = escaped;
145
146 if (iwl4965_is_empty_essid(essid, essid_len)) {
147 memcpy(escaped, "<hidden>", sizeof("<hidden>"));
148 return escaped;
149 }
150
151 essid_len = min(essid_len, (u8) IW_ESSID_MAX_SIZE);
152 while (essid_len--) {
153 if (*s == '\0') {
154 *d++ = '\\';
155 *d++ = '0';
156 s++;
157 } else
158 *d++ = *s++;
159 }
160 *d = '\0';
161 return escaped;
162 }
163
164 /*************** DMA-QUEUE-GENERAL-FUNCTIONS *****
165 * DMA services
166 *
167 * Theory of operation
168 *
169 * A Tx or Rx queue resides in host DRAM, and is comprised of a circular buffer
170 * of buffer descriptors, each of which points to one or more data buffers for
171 * the device to read from or fill. Driver and device exchange status of each
172 * queue via "read" and "write" pointers. Driver keeps minimum of 2 empty
173 * entries in each circular buffer, to protect against confusing empty and full
174 * queue states.
175 *
176 * The device reads or writes the data in the queues via the device's several
177 * DMA/FIFO channels. Each queue is mapped to a single DMA channel.
178 *
179 * For Tx queue, there are low mark and high mark limits. If, after queuing
180 * the packet for Tx, free space become < low mark, Tx queue stopped. When
181 * reclaiming packets (on 'tx done IRQ), if free space become > high mark,
182 * Tx queue resumed.
183 *
184 * The 4965 operates with up to 17 queues: One receive queue, one transmit
185 * queue (#4) for sending commands to the device firmware, and 15 other
186 * Tx queues that may be mapped to prioritized Tx DMA/FIFO channels.
187 *
188 * See more detailed info in iwl-4965-hw.h.
189 ***************************************************/
190
191 int iwl4965_queue_space(const struct iwl4965_queue *q)
192 {
193 int s = q->read_ptr - q->write_ptr;
194
195 if (q->read_ptr > q->write_ptr)
196 s -= q->n_bd;
197
198 if (s <= 0)
199 s += q->n_window;
200 /* keep some reserve to not confuse empty and full situations */
201 s -= 2;
202 if (s < 0)
203 s = 0;
204 return s;
205 }
206
207 /**
208 * iwl4965_queue_inc_wrap - increment queue index, wrap back to beginning
209 * @index -- current index
210 * @n_bd -- total number of entries in queue (must be power of 2)
211 */
212 static inline int iwl4965_queue_inc_wrap(int index, int n_bd)
213 {
214 return ++index & (n_bd - 1);
215 }
216
217 /**
218 * iwl4965_queue_dec_wrap - decrement queue index, wrap back to end
219 * @index -- current index
220 * @n_bd -- total number of entries in queue (must be power of 2)
221 */
222 static inline int iwl4965_queue_dec_wrap(int index, int n_bd)
223 {
224 return --index & (n_bd - 1);
225 }
226
227 static inline int x2_queue_used(const struct iwl4965_queue *q, int i)
228 {
229 return q->write_ptr > q->read_ptr ?
230 (i >= q->read_ptr && i < q->write_ptr) :
231 !(i < q->read_ptr && i >= q->write_ptr);
232 }
233
234 static inline u8 get_cmd_index(struct iwl4965_queue *q, u32 index, int is_huge)
235 {
236 /* This is for scan command, the big buffer at end of command array */
237 if (is_huge)
238 return q->n_window; /* must be power of 2 */
239
240 /* Otherwise, use normal size buffers */
241 return index & (q->n_window - 1);
242 }
243
244 /**
245 * iwl4965_queue_init - Initialize queue's high/low-water and read/write indexes
246 */
247 static int iwl4965_queue_init(struct iwl4965_priv *priv, struct iwl4965_queue *q,
248 int count, int slots_num, u32 id)
249 {
250 q->n_bd = count;
251 q->n_window = slots_num;
252 q->id = id;
253
254 /* count must be power-of-two size, otherwise iwl4965_queue_inc_wrap
255 * and iwl4965_queue_dec_wrap are broken. */
256 BUG_ON(!is_power_of_2(count));
257
258 /* slots_num must be power-of-two size, otherwise
259 * get_cmd_index is broken. */
260 BUG_ON(!is_power_of_2(slots_num));
261
262 q->low_mark = q->n_window / 4;
263 if (q->low_mark < 4)
264 q->low_mark = 4;
265
266 q->high_mark = q->n_window / 8;
267 if (q->high_mark < 2)
268 q->high_mark = 2;
269
270 q->write_ptr = q->read_ptr = 0;
271
272 return 0;
273 }
274
275 /**
276 * iwl4965_tx_queue_alloc - Alloc driver data and TFD CB for one Tx/cmd queue
277 */
278 static int iwl4965_tx_queue_alloc(struct iwl4965_priv *priv,
279 struct iwl4965_tx_queue *txq, u32 id)
280 {
281 struct pci_dev *dev = priv->pci_dev;
282
283 /* Driver private data, only for Tx (not command) queues,
284 * not shared with device. */
285 if (id != IWL_CMD_QUEUE_NUM) {
286 txq->txb = kmalloc(sizeof(txq->txb[0]) *
287 TFD_QUEUE_SIZE_MAX, GFP_KERNEL);
288 if (!txq->txb) {
289 IWL_ERROR("kmalloc for auxiliary BD "
290 "structures failed\n");
291 goto error;
292 }
293 } else
294 txq->txb = NULL;
295
296 /* Circular buffer of transmit frame descriptors (TFDs),
297 * shared with device */
298 txq->bd = pci_alloc_consistent(dev,
299 sizeof(txq->bd[0]) * TFD_QUEUE_SIZE_MAX,
300 &txq->q.dma_addr);
301
302 if (!txq->bd) {
303 IWL_ERROR("pci_alloc_consistent(%zd) failed\n",
304 sizeof(txq->bd[0]) * TFD_QUEUE_SIZE_MAX);
305 goto error;
306 }
307 txq->q.id = id;
308
309 return 0;
310
311 error:
312 if (txq->txb) {
313 kfree(txq->txb);
314 txq->txb = NULL;
315 }
316
317 return -ENOMEM;
318 }
319
320 /**
321 * iwl4965_tx_queue_init - Allocate and initialize one tx/cmd queue
322 */
323 int iwl4965_tx_queue_init(struct iwl4965_priv *priv,
324 struct iwl4965_tx_queue *txq, int slots_num, u32 txq_id)
325 {
326 struct pci_dev *dev = priv->pci_dev;
327 int len;
328 int rc = 0;
329
330 /*
331 * Alloc buffer array for commands (Tx or other types of commands).
332 * For the command queue (#4), allocate command space + one big
333 * command for scan, since scan command is very huge; the system will
334 * not have two scans at the same time, so only one is needed.
335 * For normal Tx queues (all other queues), no super-size command
336 * space is needed.
337 */
338 len = sizeof(struct iwl4965_cmd) * slots_num;
339 if (txq_id == IWL_CMD_QUEUE_NUM)
340 len += IWL_MAX_SCAN_SIZE;
341 txq->cmd = pci_alloc_consistent(dev, len, &txq->dma_addr_cmd);
342 if (!txq->cmd)
343 return -ENOMEM;
344
345 /* Alloc driver data array and TFD circular buffer */
346 rc = iwl4965_tx_queue_alloc(priv, txq, txq_id);
347 if (rc) {
348 pci_free_consistent(dev, len, txq->cmd, txq->dma_addr_cmd);
349
350 return -ENOMEM;
351 }
352 txq->need_update = 0;
353
354 /* TFD_QUEUE_SIZE_MAX must be power-of-two size, otherwise
355 * iwl4965_queue_inc_wrap and iwl4965_queue_dec_wrap are broken. */
356 BUILD_BUG_ON(TFD_QUEUE_SIZE_MAX & (TFD_QUEUE_SIZE_MAX - 1));
357
358 /* Initialize queue's high/low-water marks, and head/tail indexes */
359 iwl4965_queue_init(priv, &txq->q, TFD_QUEUE_SIZE_MAX, slots_num, txq_id);
360
361 /* Tell device where to find queue */
362 iwl4965_hw_tx_queue_init(priv, txq);
363
364 return 0;
365 }
366
367 /**
368 * iwl4965_tx_queue_free - Deallocate DMA queue.
369 * @txq: Transmit queue to deallocate.
370 *
371 * Empty queue by removing and destroying all BD's.
372 * Free all buffers.
373 * 0-fill, but do not free "txq" descriptor structure.
374 */
375 void iwl4965_tx_queue_free(struct iwl4965_priv *priv, struct iwl4965_tx_queue *txq)
376 {
377 struct iwl4965_queue *q = &txq->q;
378 struct pci_dev *dev = priv->pci_dev;
379 int len;
380
381 if (q->n_bd == 0)
382 return;
383
384 /* first, empty all BD's */
385 for (; q->write_ptr != q->read_ptr;
386 q->read_ptr = iwl4965_queue_inc_wrap(q->read_ptr, q->n_bd))
387 iwl4965_hw_txq_free_tfd(priv, txq);
388
389 len = sizeof(struct iwl4965_cmd) * q->n_window;
390 if (q->id == IWL_CMD_QUEUE_NUM)
391 len += IWL_MAX_SCAN_SIZE;
392
393 /* De-alloc array of command/tx buffers */
394 pci_free_consistent(dev, len, txq->cmd, txq->dma_addr_cmd);
395
396 /* De-alloc circular buffer of TFDs */
397 if (txq->q.n_bd)
398 pci_free_consistent(dev, sizeof(struct iwl4965_tfd_frame) *
399 txq->q.n_bd, txq->bd, txq->q.dma_addr);
400
401 /* De-alloc array of per-TFD driver data */
402 if (txq->txb) {
403 kfree(txq->txb);
404 txq->txb = NULL;
405 }
406
407 /* 0-fill queue descriptor structure */
408 memset(txq, 0, sizeof(*txq));
409 }
410
411 const u8 iwl4965_broadcast_addr[ETH_ALEN] = { 0xFF, 0xFF, 0xFF, 0xFF, 0xFF, 0xFF };
412
413 /*************** STATION TABLE MANAGEMENT ****
414 * mac80211 should be examined to determine if sta_info is duplicating
415 * the functionality provided here
416 */
417
418 /**************************************************************/
419
420 #if 0 /* temporary disable till we add real remove station */
421 /**
422 * iwl4965_remove_station - Remove driver's knowledge of station.
423 *
424 * NOTE: This does not remove station from device's station table.
425 */
426 static u8 iwl4965_remove_station(struct iwl4965_priv *priv, const u8 *addr, int is_ap)
427 {
428 int index = IWL_INVALID_STATION;
429 int i;
430 unsigned long flags;
431
432 spin_lock_irqsave(&priv->sta_lock, flags);
433
434 if (is_ap)
435 index = IWL_AP_ID;
436 else if (is_broadcast_ether_addr(addr))
437 index = priv->hw_setting.bcast_sta_id;
438 else
439 for (i = IWL_STA_ID; i < priv->hw_setting.max_stations; i++)
440 if (priv->stations[i].used &&
441 !compare_ether_addr(priv->stations[i].sta.sta.addr,
442 addr)) {
443 index = i;
444 break;
445 }
446
447 if (unlikely(index == IWL_INVALID_STATION))
448 goto out;
449
450 if (priv->stations[index].used) {
451 priv->stations[index].used = 0;
452 priv->num_stations--;
453 }
454
455 BUG_ON(priv->num_stations < 0);
456
457 out:
458 spin_unlock_irqrestore(&priv->sta_lock, flags);
459 return 0;
460 }
461 #endif
462
463 /**
464 * iwl4965_clear_stations_table - Clear the driver's station table
465 *
466 * NOTE: This does not clear or otherwise alter the device's station table.
467 */
468 static void iwl4965_clear_stations_table(struct iwl4965_priv *priv)
469 {
470 unsigned long flags;
471
472 spin_lock_irqsave(&priv->sta_lock, flags);
473
474 priv->num_stations = 0;
475 memset(priv->stations, 0, sizeof(priv->stations));
476
477 spin_unlock_irqrestore(&priv->sta_lock, flags);
478 }
479
480 /**
481 * iwl4965_add_station_flags - Add station to tables in driver and device
482 */
483 u8 iwl4965_add_station_flags(struct iwl4965_priv *priv, const u8 *addr,
484 int is_ap, u8 flags, void *ht_data)
485 {
486 int i;
487 int index = IWL_INVALID_STATION;
488 struct iwl4965_station_entry *station;
489 unsigned long flags_spin;
490 DECLARE_MAC_BUF(mac);
491
492 spin_lock_irqsave(&priv->sta_lock, flags_spin);
493 if (is_ap)
494 index = IWL_AP_ID;
495 else if (is_broadcast_ether_addr(addr))
496 index = priv->hw_setting.bcast_sta_id;
497 else
498 for (i = IWL_STA_ID; i < priv->hw_setting.max_stations; i++) {
499 if (!compare_ether_addr(priv->stations[i].sta.sta.addr,
500 addr)) {
501 index = i;
502 break;
503 }
504
505 if (!priv->stations[i].used &&
506 index == IWL_INVALID_STATION)
507 index = i;
508 }
509
510
511 /* These two conditions have the same outcome, but keep them separate
512 since they have different meanings */
513 if (unlikely(index == IWL_INVALID_STATION)) {
514 spin_unlock_irqrestore(&priv->sta_lock, flags_spin);
515 return index;
516 }
517
518 if (priv->stations[index].used &&
519 !compare_ether_addr(priv->stations[index].sta.sta.addr, addr)) {
520 spin_unlock_irqrestore(&priv->sta_lock, flags_spin);
521 return index;
522 }
523
524
525 IWL_DEBUG_ASSOC("Add STA ID %d: %s\n", index, print_mac(mac, addr));
526 station = &priv->stations[index];
527 station->used = 1;
528 priv->num_stations++;
529
530 /* Set up the REPLY_ADD_STA command to send to device */
531 memset(&station->sta, 0, sizeof(struct iwl4965_addsta_cmd));
532 memcpy(station->sta.sta.addr, addr, ETH_ALEN);
533 station->sta.mode = 0;
534 station->sta.sta.sta_id = index;
535 station->sta.station_flags = 0;
536
537 #ifdef CONFIG_IWL4965_HT
538 /* BCAST station and IBSS stations do not work in HT mode */
539 if (index != priv->hw_setting.bcast_sta_id &&
540 priv->iw_mode != IEEE80211_IF_TYPE_IBSS)
541 iwl4965_set_ht_add_station(priv, index,
542 (struct ieee80211_ht_info *) ht_data);
543 #endif /*CONFIG_IWL4965_HT*/
544
545 spin_unlock_irqrestore(&priv->sta_lock, flags_spin);
546
547 /* Add station to device's station table */
548 iwl4965_send_add_station(priv, &station->sta, flags);
549 return index;
550
551 }
552
553 /*************** DRIVER STATUS FUNCTIONS *****/
554
555 static inline int iwl4965_is_ready(struct iwl4965_priv *priv)
556 {
557 /* The adapter is 'ready' if READY and GEO_CONFIGURED bits are
558 * set but EXIT_PENDING is not */
559 return test_bit(STATUS_READY, &priv->status) &&
560 test_bit(STATUS_GEO_CONFIGURED, &priv->status) &&
561 !test_bit(STATUS_EXIT_PENDING, &priv->status);
562 }
563
564 static inline int iwl4965_is_alive(struct iwl4965_priv *priv)
565 {
566 return test_bit(STATUS_ALIVE, &priv->status);
567 }
568
569 static inline int iwl4965_is_init(struct iwl4965_priv *priv)
570 {
571 return test_bit(STATUS_INIT, &priv->status);
572 }
573
574 static inline int iwl4965_is_rfkill(struct iwl4965_priv *priv)
575 {
576 return test_bit(STATUS_RF_KILL_HW, &priv->status) ||
577 test_bit(STATUS_RF_KILL_SW, &priv->status);
578 }
579
580 static inline int iwl4965_is_ready_rf(struct iwl4965_priv *priv)
581 {
582
583 if (iwl4965_is_rfkill(priv))
584 return 0;
585
586 return iwl4965_is_ready(priv);
587 }
588
589 /*************** HOST COMMAND QUEUE FUNCTIONS *****/
590
591 #define IWL_CMD(x) case x : return #x
592
593 static const char *get_cmd_string(u8 cmd)
594 {
595 switch (cmd) {
596 IWL_CMD(REPLY_ALIVE);
597 IWL_CMD(REPLY_ERROR);
598 IWL_CMD(REPLY_RXON);
599 IWL_CMD(REPLY_RXON_ASSOC);
600 IWL_CMD(REPLY_QOS_PARAM);
601 IWL_CMD(REPLY_RXON_TIMING);
602 IWL_CMD(REPLY_ADD_STA);
603 IWL_CMD(REPLY_REMOVE_STA);
604 IWL_CMD(REPLY_REMOVE_ALL_STA);
605 IWL_CMD(REPLY_TX);
606 IWL_CMD(REPLY_RATE_SCALE);
607 IWL_CMD(REPLY_LEDS_CMD);
608 IWL_CMD(REPLY_TX_LINK_QUALITY_CMD);
609 IWL_CMD(RADAR_NOTIFICATION);
610 IWL_CMD(REPLY_QUIET_CMD);
611 IWL_CMD(REPLY_CHANNEL_SWITCH);
612 IWL_CMD(CHANNEL_SWITCH_NOTIFICATION);
613 IWL_CMD(REPLY_SPECTRUM_MEASUREMENT_CMD);
614 IWL_CMD(SPECTRUM_MEASURE_NOTIFICATION);
615 IWL_CMD(POWER_TABLE_CMD);
616 IWL_CMD(PM_SLEEP_NOTIFICATION);
617 IWL_CMD(PM_DEBUG_STATISTIC_NOTIFIC);
618 IWL_CMD(REPLY_SCAN_CMD);
619 IWL_CMD(REPLY_SCAN_ABORT_CMD);
620 IWL_CMD(SCAN_START_NOTIFICATION);
621 IWL_CMD(SCAN_RESULTS_NOTIFICATION);
622 IWL_CMD(SCAN_COMPLETE_NOTIFICATION);
623 IWL_CMD(BEACON_NOTIFICATION);
624 IWL_CMD(REPLY_TX_BEACON);
625 IWL_CMD(WHO_IS_AWAKE_NOTIFICATION);
626 IWL_CMD(QUIET_NOTIFICATION);
627 IWL_CMD(REPLY_TX_PWR_TABLE_CMD);
628 IWL_CMD(MEASURE_ABORT_NOTIFICATION);
629 IWL_CMD(REPLY_BT_CONFIG);
630 IWL_CMD(REPLY_STATISTICS_CMD);
631 IWL_CMD(STATISTICS_NOTIFICATION);
632 IWL_CMD(REPLY_CARD_STATE_CMD);
633 IWL_CMD(CARD_STATE_NOTIFICATION);
634 IWL_CMD(MISSED_BEACONS_NOTIFICATION);
635 IWL_CMD(REPLY_CT_KILL_CONFIG_CMD);
636 IWL_CMD(SENSITIVITY_CMD);
637 IWL_CMD(REPLY_PHY_CALIBRATION_CMD);
638 IWL_CMD(REPLY_RX_PHY_CMD);
639 IWL_CMD(REPLY_RX_MPDU_CMD);
640 IWL_CMD(REPLY_4965_RX);
641 IWL_CMD(REPLY_COMPRESSED_BA);
642 default:
643 return "UNKNOWN";
644
645 }
646 }
647
648 #define HOST_COMPLETE_TIMEOUT (HZ / 2)
649
650 /**
651 * iwl4965_enqueue_hcmd - enqueue a uCode command
652 * @priv: device private data point
653 * @cmd: a point to the ucode command structure
654 *
655 * The function returns < 0 values to indicate the operation is
656 * failed. On success, it turns the index (> 0) of command in the
657 * command queue.
658 */
659 static int iwl4965_enqueue_hcmd(struct iwl4965_priv *priv, struct iwl4965_host_cmd *cmd)
660 {
661 struct iwl4965_tx_queue *txq = &priv->txq[IWL_CMD_QUEUE_NUM];
662 struct iwl4965_queue *q = &txq->q;
663 struct iwl4965_tfd_frame *tfd;
664 u32 *control_flags;
665 struct iwl4965_cmd *out_cmd;
666 u32 idx;
667 u16 fix_size = (u16)(cmd->len + sizeof(out_cmd->hdr));
668 dma_addr_t phys_addr;
669 int ret;
670 unsigned long flags;
671
672 /* If any of the command structures end up being larger than
673 * the TFD_MAX_PAYLOAD_SIZE, and it sent as a 'small' command then
674 * we will need to increase the size of the TFD entries */
675 BUG_ON((fix_size > TFD_MAX_PAYLOAD_SIZE) &&
676 !(cmd->meta.flags & CMD_SIZE_HUGE));
677
678 if (iwl4965_is_rfkill(priv)) {
679 IWL_DEBUG_INFO("Not sending command - RF KILL");
680 return -EIO;
681 }
682
683 if (iwl4965_queue_space(q) < ((cmd->meta.flags & CMD_ASYNC) ? 2 : 1)) {
684 IWL_ERROR("No space for Tx\n");
685 return -ENOSPC;
686 }
687
688 spin_lock_irqsave(&priv->hcmd_lock, flags);
689
690 tfd = &txq->bd[q->write_ptr];
691 memset(tfd, 0, sizeof(*tfd));
692
693 control_flags = (u32 *) tfd;
694
695 idx = get_cmd_index(q, q->write_ptr, cmd->meta.flags & CMD_SIZE_HUGE);
696 out_cmd = &txq->cmd[idx];
697
698 out_cmd->hdr.cmd = cmd->id;
699 memcpy(&out_cmd->meta, &cmd->meta, sizeof(cmd->meta));
700 memcpy(&out_cmd->cmd.payload, cmd->data, cmd->len);
701
702 /* At this point, the out_cmd now has all of the incoming cmd
703 * information */
704
705 out_cmd->hdr.flags = 0;
706 out_cmd->hdr.sequence = cpu_to_le16(QUEUE_TO_SEQ(IWL_CMD_QUEUE_NUM) |
707 INDEX_TO_SEQ(q->write_ptr));
708 if (out_cmd->meta.flags & CMD_SIZE_HUGE)
709 out_cmd->hdr.sequence |= cpu_to_le16(SEQ_HUGE_FRAME);
710
711 phys_addr = txq->dma_addr_cmd + sizeof(txq->cmd[0]) * idx +
712 offsetof(struct iwl4965_cmd, hdr);
713 iwl4965_hw_txq_attach_buf_to_tfd(priv, tfd, phys_addr, fix_size);
714
715 IWL_DEBUG_HC("Sending command %s (#%x), seq: 0x%04X, "
716 "%d bytes at %d[%d]:%d\n",
717 get_cmd_string(out_cmd->hdr.cmd),
718 out_cmd->hdr.cmd, le16_to_cpu(out_cmd->hdr.sequence),
719 fix_size, q->write_ptr, idx, IWL_CMD_QUEUE_NUM);
720
721 txq->need_update = 1;
722
723 /* Set up entry in queue's byte count circular buffer */
724 ret = iwl4965_tx_queue_update_wr_ptr(priv, txq, 0);
725
726 /* Increment and update queue's write index */
727 q->write_ptr = iwl4965_queue_inc_wrap(q->write_ptr, q->n_bd);
728 iwl4965_tx_queue_update_write_ptr(priv, txq);
729
730 spin_unlock_irqrestore(&priv->hcmd_lock, flags);
731 return ret ? ret : idx;
732 }
733
734 static int iwl4965_send_cmd_async(struct iwl4965_priv *priv, struct iwl4965_host_cmd *cmd)
735 {
736 int ret;
737
738 BUG_ON(!(cmd->meta.flags & CMD_ASYNC));
739
740 /* An asynchronous command can not expect an SKB to be set. */
741 BUG_ON(cmd->meta.flags & CMD_WANT_SKB);
742
743 /* An asynchronous command MUST have a callback. */
744 BUG_ON(!cmd->meta.u.callback);
745
746 if (test_bit(STATUS_EXIT_PENDING, &priv->status))
747 return -EBUSY;
748
749 ret = iwl4965_enqueue_hcmd(priv, cmd);
750 if (ret < 0) {
751 IWL_ERROR("Error sending %s: iwl4965_enqueue_hcmd failed: %d\n",
752 get_cmd_string(cmd->id), ret);
753 return ret;
754 }
755 return 0;
756 }
757
758 static int iwl4965_send_cmd_sync(struct iwl4965_priv *priv, struct iwl4965_host_cmd *cmd)
759 {
760 int cmd_idx;
761 int ret;
762 static atomic_t entry = ATOMIC_INIT(0); /* reentrance protection */
763
764 BUG_ON(cmd->meta.flags & CMD_ASYNC);
765
766 /* A synchronous command can not have a callback set. */
767 BUG_ON(cmd->meta.u.callback != NULL);
768
769 if (atomic_xchg(&entry, 1)) {
770 IWL_ERROR("Error sending %s: Already sending a host command\n",
771 get_cmd_string(cmd->id));
772 return -EBUSY;
773 }
774
775 set_bit(STATUS_HCMD_ACTIVE, &priv->status);
776
777 if (cmd->meta.flags & CMD_WANT_SKB)
778 cmd->meta.source = &cmd->meta;
779
780 cmd_idx = iwl4965_enqueue_hcmd(priv, cmd);
781 if (cmd_idx < 0) {
782 ret = cmd_idx;
783 IWL_ERROR("Error sending %s: iwl4965_enqueue_hcmd failed: %d\n",
784 get_cmd_string(cmd->id), ret);
785 goto out;
786 }
787
788 ret = wait_event_interruptible_timeout(priv->wait_command_queue,
789 !test_bit(STATUS_HCMD_ACTIVE, &priv->status),
790 HOST_COMPLETE_TIMEOUT);
791 if (!ret) {
792 if (test_bit(STATUS_HCMD_ACTIVE, &priv->status)) {
793 IWL_ERROR("Error sending %s: time out after %dms.\n",
794 get_cmd_string(cmd->id),
795 jiffies_to_msecs(HOST_COMPLETE_TIMEOUT));
796
797 clear_bit(STATUS_HCMD_ACTIVE, &priv->status);
798 ret = -ETIMEDOUT;
799 goto cancel;
800 }
801 }
802
803 if (test_bit(STATUS_RF_KILL_HW, &priv->status)) {
804 IWL_DEBUG_INFO("Command %s aborted: RF KILL Switch\n",
805 get_cmd_string(cmd->id));
806 ret = -ECANCELED;
807 goto fail;
808 }
809 if (test_bit(STATUS_FW_ERROR, &priv->status)) {
810 IWL_DEBUG_INFO("Command %s failed: FW Error\n",
811 get_cmd_string(cmd->id));
812 ret = -EIO;
813 goto fail;
814 }
815 if ((cmd->meta.flags & CMD_WANT_SKB) && !cmd->meta.u.skb) {
816 IWL_ERROR("Error: Response NULL in '%s'\n",
817 get_cmd_string(cmd->id));
818 ret = -EIO;
819 goto out;
820 }
821
822 ret = 0;
823 goto out;
824
825 cancel:
826 if (cmd->meta.flags & CMD_WANT_SKB) {
827 struct iwl4965_cmd *qcmd;
828
829 /* Cancel the CMD_WANT_SKB flag for the cmd in the
830 * TX cmd queue. Otherwise in case the cmd comes
831 * in later, it will possibly set an invalid
832 * address (cmd->meta.source). */
833 qcmd = &priv->txq[IWL_CMD_QUEUE_NUM].cmd[cmd_idx];
834 qcmd->meta.flags &= ~CMD_WANT_SKB;
835 }
836 fail:
837 if (cmd->meta.u.skb) {
838 dev_kfree_skb_any(cmd->meta.u.skb);
839 cmd->meta.u.skb = NULL;
840 }
841 out:
842 atomic_set(&entry, 0);
843 return ret;
844 }
845
846 int iwl4965_send_cmd(struct iwl4965_priv *priv, struct iwl4965_host_cmd *cmd)
847 {
848 if (cmd->meta.flags & CMD_ASYNC)
849 return iwl4965_send_cmd_async(priv, cmd);
850
851 return iwl4965_send_cmd_sync(priv, cmd);
852 }
853
854 int iwl4965_send_cmd_pdu(struct iwl4965_priv *priv, u8 id, u16 len, const void *data)
855 {
856 struct iwl4965_host_cmd cmd = {
857 .id = id,
858 .len = len,
859 .data = data,
860 };
861
862 return iwl4965_send_cmd_sync(priv, &cmd);
863 }
864
865 static int __must_check iwl4965_send_cmd_u32(struct iwl4965_priv *priv, u8 id, u32 val)
866 {
867 struct iwl4965_host_cmd cmd = {
868 .id = id,
869 .len = sizeof(val),
870 .data = &val,
871 };
872
873 return iwl4965_send_cmd_sync(priv, &cmd);
874 }
875
876 int iwl4965_send_statistics_request(struct iwl4965_priv *priv)
877 {
878 return iwl4965_send_cmd_u32(priv, REPLY_STATISTICS_CMD, 0);
879 }
880
881 /**
882 * iwl4965_rxon_add_station - add station into station table.
883 *
884 * there is only one AP station with id= IWL_AP_ID
885 * NOTE: mutex must be held before calling this fnction
886 */
887 static int iwl4965_rxon_add_station(struct iwl4965_priv *priv,
888 const u8 *addr, int is_ap)
889 {
890 u8 sta_id;
891
892 /* Add station to device's station table */
893 #ifdef CONFIG_IWL4965_HT
894 struct ieee80211_conf *conf = &priv->hw->conf;
895 struct ieee80211_ht_info *cur_ht_config = &conf->ht_conf;
896
897 if ((is_ap) &&
898 (conf->flags & IEEE80211_CONF_SUPPORT_HT_MODE) &&
899 (priv->iw_mode == IEEE80211_IF_TYPE_STA))
900 sta_id = iwl4965_add_station_flags(priv, addr, is_ap,
901 0, cur_ht_config);
902 else
903 #endif /* CONFIG_IWL4965_HT */
904 sta_id = iwl4965_add_station_flags(priv, addr, is_ap,
905 0, NULL);
906
907 /* Set up default rate scaling table in device's station table */
908 iwl4965_add_station(priv, addr, is_ap);
909
910 return sta_id;
911 }
912
913 /**
914 * iwl4965_set_rxon_channel - Set the phymode and channel values in staging RXON
915 * @phymode: MODE_IEEE80211A sets to 5.2GHz; all else set to 2.4GHz
916 * @channel: Any channel valid for the requested phymode
917
918 * In addition to setting the staging RXON, priv->phymode is also set.
919 *
920 * NOTE: Does not commit to the hardware; it sets appropriate bit fields
921 * in the staging RXON flag structure based on the phymode
922 */
923 static int iwl4965_set_rxon_channel(struct iwl4965_priv *priv,
924 enum ieee80211_band band,
925 u16 channel)
926 {
927 if (!iwl4965_get_channel_info(priv, band, channel)) {
928 IWL_DEBUG_INFO("Could not set channel to %d [%d]\n",
929 channel, band);
930 return -EINVAL;
931 }
932
933 if ((le16_to_cpu(priv->staging_rxon.channel) == channel) &&
934 (priv->band == band))
935 return 0;
936
937 priv->staging_rxon.channel = cpu_to_le16(channel);
938 if (band == IEEE80211_BAND_5GHZ)
939 priv->staging_rxon.flags &= ~RXON_FLG_BAND_24G_MSK;
940 else
941 priv->staging_rxon.flags |= RXON_FLG_BAND_24G_MSK;
942
943 priv->band = band;
944
945 IWL_DEBUG_INFO("Staging channel set to %d [%d]\n", channel, band);
946
947 return 0;
948 }
949
950 /**
951 * iwl4965_check_rxon_cmd - validate RXON structure is valid
952 *
953 * NOTE: This is really only useful during development and can eventually
954 * be #ifdef'd out once the driver is stable and folks aren't actively
955 * making changes
956 */
957 static int iwl4965_check_rxon_cmd(struct iwl4965_rxon_cmd *rxon)
958 {
959 int error = 0;
960 int counter = 1;
961
962 if (rxon->flags & RXON_FLG_BAND_24G_MSK) {
963 error |= le32_to_cpu(rxon->flags &
964 (RXON_FLG_TGJ_NARROW_BAND_MSK |
965 RXON_FLG_RADAR_DETECT_MSK));
966 if (error)
967 IWL_WARNING("check 24G fields %d | %d\n",
968 counter++, error);
969 } else {
970 error |= (rxon->flags & RXON_FLG_SHORT_SLOT_MSK) ?
971 0 : le32_to_cpu(RXON_FLG_SHORT_SLOT_MSK);
972 if (error)
973 IWL_WARNING("check 52 fields %d | %d\n",
974 counter++, error);
975 error |= le32_to_cpu(rxon->flags & RXON_FLG_CCK_MSK);
976 if (error)
977 IWL_WARNING("check 52 CCK %d | %d\n",
978 counter++, error);
979 }
980 error |= (rxon->node_addr[0] | rxon->bssid_addr[0]) & 0x1;
981 if (error)
982 IWL_WARNING("check mac addr %d | %d\n", counter++, error);
983
984 /* make sure basic rates 6Mbps and 1Mbps are supported */
985 error |= (((rxon->ofdm_basic_rates & IWL_RATE_6M_MASK) == 0) &&
986 ((rxon->cck_basic_rates & IWL_RATE_1M_MASK) == 0));
987 if (error)
988 IWL_WARNING("check basic rate %d | %d\n", counter++, error);
989
990 error |= (le16_to_cpu(rxon->assoc_id) > 2007);
991 if (error)
992 IWL_WARNING("check assoc id %d | %d\n", counter++, error);
993
994 error |= ((rxon->flags & (RXON_FLG_CCK_MSK | RXON_FLG_SHORT_SLOT_MSK))
995 == (RXON_FLG_CCK_MSK | RXON_FLG_SHORT_SLOT_MSK));
996 if (error)
997 IWL_WARNING("check CCK and short slot %d | %d\n",
998 counter++, error);
999
1000 error |= ((rxon->flags & (RXON_FLG_CCK_MSK | RXON_FLG_AUTO_DETECT_MSK))
1001 == (RXON_FLG_CCK_MSK | RXON_FLG_AUTO_DETECT_MSK));
1002 if (error)
1003 IWL_WARNING("check CCK & auto detect %d | %d\n",
1004 counter++, error);
1005
1006 error |= ((rxon->flags & (RXON_FLG_AUTO_DETECT_MSK |
1007 RXON_FLG_TGG_PROTECT_MSK)) == RXON_FLG_TGG_PROTECT_MSK);
1008 if (error)
1009 IWL_WARNING("check TGG and auto detect %d | %d\n",
1010 counter++, error);
1011
1012 if (error)
1013 IWL_WARNING("Tuning to channel %d\n",
1014 le16_to_cpu(rxon->channel));
1015
1016 if (error) {
1017 IWL_ERROR("Not a valid iwl4965_rxon_assoc_cmd field values\n");
1018 return -1;
1019 }
1020 return 0;
1021 }
1022
1023 /**
1024 * iwl4965_full_rxon_required - check if full RXON (vs RXON_ASSOC) cmd is needed
1025 * @priv: staging_rxon is compared to active_rxon
1026 *
1027 * If the RXON structure is changing enough to require a new tune,
1028 * or is clearing the RXON_FILTER_ASSOC_MSK, then return 1 to indicate that
1029 * a new tune (full RXON command, rather than RXON_ASSOC cmd) is required.
1030 */
1031 static int iwl4965_full_rxon_required(struct iwl4965_priv *priv)
1032 {
1033
1034 /* These items are only settable from the full RXON command */
1035 if (!(priv->active_rxon.filter_flags & RXON_FILTER_ASSOC_MSK) ||
1036 compare_ether_addr(priv->staging_rxon.bssid_addr,
1037 priv->active_rxon.bssid_addr) ||
1038 compare_ether_addr(priv->staging_rxon.node_addr,
1039 priv->active_rxon.node_addr) ||
1040 compare_ether_addr(priv->staging_rxon.wlap_bssid_addr,
1041 priv->active_rxon.wlap_bssid_addr) ||
1042 (priv->staging_rxon.dev_type != priv->active_rxon.dev_type) ||
1043 (priv->staging_rxon.channel != priv->active_rxon.channel) ||
1044 (priv->staging_rxon.air_propagation !=
1045 priv->active_rxon.air_propagation) ||
1046 (priv->staging_rxon.ofdm_ht_single_stream_basic_rates !=
1047 priv->active_rxon.ofdm_ht_single_stream_basic_rates) ||
1048 (priv->staging_rxon.ofdm_ht_dual_stream_basic_rates !=
1049 priv->active_rxon.ofdm_ht_dual_stream_basic_rates) ||
1050 (priv->staging_rxon.rx_chain != priv->active_rxon.rx_chain) ||
1051 (priv->staging_rxon.assoc_id != priv->active_rxon.assoc_id))
1052 return 1;
1053
1054 /* flags, filter_flags, ofdm_basic_rates, and cck_basic_rates can
1055 * be updated with the RXON_ASSOC command -- however only some
1056 * flag transitions are allowed using RXON_ASSOC */
1057
1058 /* Check if we are not switching bands */
1059 if ((priv->staging_rxon.flags & RXON_FLG_BAND_24G_MSK) !=
1060 (priv->active_rxon.flags & RXON_FLG_BAND_24G_MSK))
1061 return 1;
1062
1063 /* Check if we are switching association toggle */
1064 if ((priv->staging_rxon.filter_flags & RXON_FILTER_ASSOC_MSK) !=
1065 (priv->active_rxon.filter_flags & RXON_FILTER_ASSOC_MSK))
1066 return 1;
1067
1068 return 0;
1069 }
1070
1071 static int iwl4965_send_rxon_assoc(struct iwl4965_priv *priv)
1072 {
1073 int rc = 0;
1074 struct iwl4965_rx_packet *res = NULL;
1075 struct iwl4965_rxon_assoc_cmd rxon_assoc;
1076 struct iwl4965_host_cmd cmd = {
1077 .id = REPLY_RXON_ASSOC,
1078 .len = sizeof(rxon_assoc),
1079 .meta.flags = CMD_WANT_SKB,
1080 .data = &rxon_assoc,
1081 };
1082 const struct iwl4965_rxon_cmd *rxon1 = &priv->staging_rxon;
1083 const struct iwl4965_rxon_cmd *rxon2 = &priv->active_rxon;
1084
1085 if ((rxon1->flags == rxon2->flags) &&
1086 (rxon1->filter_flags == rxon2->filter_flags) &&
1087 (rxon1->cck_basic_rates == rxon2->cck_basic_rates) &&
1088 (rxon1->ofdm_ht_single_stream_basic_rates ==
1089 rxon2->ofdm_ht_single_stream_basic_rates) &&
1090 (rxon1->ofdm_ht_dual_stream_basic_rates ==
1091 rxon2->ofdm_ht_dual_stream_basic_rates) &&
1092 (rxon1->rx_chain == rxon2->rx_chain) &&
1093 (rxon1->ofdm_basic_rates == rxon2->ofdm_basic_rates)) {
1094 IWL_DEBUG_INFO("Using current RXON_ASSOC. Not resending.\n");
1095 return 0;
1096 }
1097
1098 rxon_assoc.flags = priv->staging_rxon.flags;
1099 rxon_assoc.filter_flags = priv->staging_rxon.filter_flags;
1100 rxon_assoc.ofdm_basic_rates = priv->staging_rxon.ofdm_basic_rates;
1101 rxon_assoc.cck_basic_rates = priv->staging_rxon.cck_basic_rates;
1102 rxon_assoc.reserved = 0;
1103 rxon_assoc.ofdm_ht_single_stream_basic_rates =
1104 priv->staging_rxon.ofdm_ht_single_stream_basic_rates;
1105 rxon_assoc.ofdm_ht_dual_stream_basic_rates =
1106 priv->staging_rxon.ofdm_ht_dual_stream_basic_rates;
1107 rxon_assoc.rx_chain_select_flags = priv->staging_rxon.rx_chain;
1108
1109 rc = iwl4965_send_cmd_sync(priv, &cmd);
1110 if (rc)
1111 return rc;
1112
1113 res = (struct iwl4965_rx_packet *)cmd.meta.u.skb->data;
1114 if (res->hdr.flags & IWL_CMD_FAILED_MSK) {
1115 IWL_ERROR("Bad return from REPLY_RXON_ASSOC command\n");
1116 rc = -EIO;
1117 }
1118
1119 priv->alloc_rxb_skb--;
1120 dev_kfree_skb_any(cmd.meta.u.skb);
1121
1122 return rc;
1123 }
1124
1125 /**
1126 * iwl4965_commit_rxon - commit staging_rxon to hardware
1127 *
1128 * The RXON command in staging_rxon is committed to the hardware and
1129 * the active_rxon structure is updated with the new data. This
1130 * function correctly transitions out of the RXON_ASSOC_MSK state if
1131 * a HW tune is required based on the RXON structure changes.
1132 */
1133 static int iwl4965_commit_rxon(struct iwl4965_priv *priv)
1134 {
1135 /* cast away the const for active_rxon in this function */
1136 struct iwl4965_rxon_cmd *active_rxon = (void *)&priv->active_rxon;
1137 DECLARE_MAC_BUF(mac);
1138 int rc = 0;
1139
1140 if (!iwl4965_is_alive(priv))
1141 return -1;
1142
1143 /* always get timestamp with Rx frame */
1144 priv->staging_rxon.flags |= RXON_FLG_TSF2HOST_MSK;
1145
1146 rc = iwl4965_check_rxon_cmd(&priv->staging_rxon);
1147 if (rc) {
1148 IWL_ERROR("Invalid RXON configuration. Not committing.\n");
1149 return -EINVAL;
1150 }
1151
1152 /* If we don't need to send a full RXON, we can use
1153 * iwl4965_rxon_assoc_cmd which is used to reconfigure filter
1154 * and other flags for the current radio configuration. */
1155 if (!iwl4965_full_rxon_required(priv)) {
1156 rc = iwl4965_send_rxon_assoc(priv);
1157 if (rc) {
1158 IWL_ERROR("Error setting RXON_ASSOC "
1159 "configuration (%d).\n", rc);
1160 return rc;
1161 }
1162
1163 memcpy(active_rxon, &priv->staging_rxon, sizeof(*active_rxon));
1164
1165 return 0;
1166 }
1167
1168 /* station table will be cleared */
1169 priv->assoc_station_added = 0;
1170
1171 #ifdef CONFIG_IWL4965_SENSITIVITY
1172 priv->sensitivity_data.state = IWL_SENS_CALIB_NEED_REINIT;
1173 if (!priv->error_recovering)
1174 priv->start_calib = 0;
1175
1176 iwl4965_init_sensitivity(priv, CMD_ASYNC, 1);
1177 #endif /* CONFIG_IWL4965_SENSITIVITY */
1178
1179 /* If we are currently associated and the new config requires
1180 * an RXON_ASSOC and the new config wants the associated mask enabled,
1181 * we must clear the associated from the active configuration
1182 * before we apply the new config */
1183 if (iwl4965_is_associated(priv) &&
1184 (priv->staging_rxon.filter_flags & RXON_FILTER_ASSOC_MSK)) {
1185 IWL_DEBUG_INFO("Toggling associated bit on current RXON\n");
1186 active_rxon->filter_flags &= ~RXON_FILTER_ASSOC_MSK;
1187
1188 rc = iwl4965_send_cmd_pdu(priv, REPLY_RXON,
1189 sizeof(struct iwl4965_rxon_cmd),
1190 &priv->active_rxon);
1191
1192 /* If the mask clearing failed then we set
1193 * active_rxon back to what it was previously */
1194 if (rc) {
1195 active_rxon->filter_flags |= RXON_FILTER_ASSOC_MSK;
1196 IWL_ERROR("Error clearing ASSOC_MSK on current "
1197 "configuration (%d).\n", rc);
1198 return rc;
1199 }
1200 }
1201
1202 IWL_DEBUG_INFO("Sending RXON\n"
1203 "* with%s RXON_FILTER_ASSOC_MSK\n"
1204 "* channel = %d\n"
1205 "* bssid = %s\n",
1206 ((priv->staging_rxon.filter_flags &
1207 RXON_FILTER_ASSOC_MSK) ? "" : "out"),
1208 le16_to_cpu(priv->staging_rxon.channel),
1209 print_mac(mac, priv->staging_rxon.bssid_addr));
1210
1211 /* Apply the new configuration */
1212 rc = iwl4965_send_cmd_pdu(priv, REPLY_RXON,
1213 sizeof(struct iwl4965_rxon_cmd), &priv->staging_rxon);
1214 if (rc) {
1215 IWL_ERROR("Error setting new configuration (%d).\n", rc);
1216 return rc;
1217 }
1218
1219 iwl4965_clear_stations_table(priv);
1220
1221 #ifdef CONFIG_IWL4965_SENSITIVITY
1222 if (!priv->error_recovering)
1223 priv->start_calib = 0;
1224
1225 priv->sensitivity_data.state = IWL_SENS_CALIB_NEED_REINIT;
1226 iwl4965_init_sensitivity(priv, CMD_ASYNC, 1);
1227 #endif /* CONFIG_IWL4965_SENSITIVITY */
1228
1229 memcpy(active_rxon, &priv->staging_rxon, sizeof(*active_rxon));
1230
1231 /* If we issue a new RXON command which required a tune then we must
1232 * send a new TXPOWER command or we won't be able to Tx any frames */
1233 rc = iwl4965_hw_reg_send_txpower(priv);
1234 if (rc) {
1235 IWL_ERROR("Error setting Tx power (%d).\n", rc);
1236 return rc;
1237 }
1238
1239 /* Add the broadcast address so we can send broadcast frames */
1240 if (iwl4965_rxon_add_station(priv, iwl4965_broadcast_addr, 0) ==
1241 IWL_INVALID_STATION) {
1242 IWL_ERROR("Error adding BROADCAST address for transmit.\n");
1243 return -EIO;
1244 }
1245
1246 /* If we have set the ASSOC_MSK and we are in BSS mode then
1247 * add the IWL_AP_ID to the station rate table */
1248 if (iwl4965_is_associated(priv) &&
1249 (priv->iw_mode == IEEE80211_IF_TYPE_STA)) {
1250 if (iwl4965_rxon_add_station(priv, priv->active_rxon.bssid_addr, 1)
1251 == IWL_INVALID_STATION) {
1252 IWL_ERROR("Error adding AP address for transmit.\n");
1253 return -EIO;
1254 }
1255 priv->assoc_station_added = 1;
1256 }
1257
1258 return 0;
1259 }
1260
1261 static int iwl4965_send_bt_config(struct iwl4965_priv *priv)
1262 {
1263 struct iwl4965_bt_cmd bt_cmd = {
1264 .flags = 3,
1265 .lead_time = 0xAA,
1266 .max_kill = 1,
1267 .kill_ack_mask = 0,
1268 .kill_cts_mask = 0,
1269 };
1270
1271 return iwl4965_send_cmd_pdu(priv, REPLY_BT_CONFIG,
1272 sizeof(struct iwl4965_bt_cmd), &bt_cmd);
1273 }
1274
1275 static int iwl4965_send_scan_abort(struct iwl4965_priv *priv)
1276 {
1277 int rc = 0;
1278 struct iwl4965_rx_packet *res;
1279 struct iwl4965_host_cmd cmd = {
1280 .id = REPLY_SCAN_ABORT_CMD,
1281 .meta.flags = CMD_WANT_SKB,
1282 };
1283
1284 /* If there isn't a scan actively going on in the hardware
1285 * then we are in between scan bands and not actually
1286 * actively scanning, so don't send the abort command */
1287 if (!test_bit(STATUS_SCAN_HW, &priv->status)) {
1288 clear_bit(STATUS_SCAN_ABORTING, &priv->status);
1289 return 0;
1290 }
1291
1292 rc = iwl4965_send_cmd_sync(priv, &cmd);
1293 if (rc) {
1294 clear_bit(STATUS_SCAN_ABORTING, &priv->status);
1295 return rc;
1296 }
1297
1298 res = (struct iwl4965_rx_packet *)cmd.meta.u.skb->data;
1299 if (res->u.status != CAN_ABORT_STATUS) {
1300 /* The scan abort will return 1 for success or
1301 * 2 for "failure". A failure condition can be
1302 * due to simply not being in an active scan which
1303 * can occur if we send the scan abort before we
1304 * the microcode has notified us that a scan is
1305 * completed. */
1306 IWL_DEBUG_INFO("SCAN_ABORT returned %d.\n", res->u.status);
1307 clear_bit(STATUS_SCAN_ABORTING, &priv->status);
1308 clear_bit(STATUS_SCAN_HW, &priv->status);
1309 }
1310
1311 dev_kfree_skb_any(cmd.meta.u.skb);
1312
1313 return rc;
1314 }
1315
1316 static int iwl4965_card_state_sync_callback(struct iwl4965_priv *priv,
1317 struct iwl4965_cmd *cmd,
1318 struct sk_buff *skb)
1319 {
1320 return 1;
1321 }
1322
1323 /*
1324 * CARD_STATE_CMD
1325 *
1326 * Use: Sets the device's internal card state to enable, disable, or halt
1327 *
1328 * When in the 'enable' state the card operates as normal.
1329 * When in the 'disable' state, the card enters into a low power mode.
1330 * When in the 'halt' state, the card is shut down and must be fully
1331 * restarted to come back on.
1332 */
1333 static int iwl4965_send_card_state(struct iwl4965_priv *priv, u32 flags, u8 meta_flag)
1334 {
1335 struct iwl4965_host_cmd cmd = {
1336 .id = REPLY_CARD_STATE_CMD,
1337 .len = sizeof(u32),
1338 .data = &flags,
1339 .meta.flags = meta_flag,
1340 };
1341
1342 if (meta_flag & CMD_ASYNC)
1343 cmd.meta.u.callback = iwl4965_card_state_sync_callback;
1344
1345 return iwl4965_send_cmd(priv, &cmd);
1346 }
1347
1348 static int iwl4965_add_sta_sync_callback(struct iwl4965_priv *priv,
1349 struct iwl4965_cmd *cmd, struct sk_buff *skb)
1350 {
1351 struct iwl4965_rx_packet *res = NULL;
1352
1353 if (!skb) {
1354 IWL_ERROR("Error: Response NULL in REPLY_ADD_STA.\n");
1355 return 1;
1356 }
1357
1358 res = (struct iwl4965_rx_packet *)skb->data;
1359 if (res->hdr.flags & IWL_CMD_FAILED_MSK) {
1360 IWL_ERROR("Bad return from REPLY_ADD_STA (0x%08X)\n",
1361 res->hdr.flags);
1362 return 1;
1363 }
1364
1365 switch (res->u.add_sta.status) {
1366 case ADD_STA_SUCCESS_MSK:
1367 break;
1368 default:
1369 break;
1370 }
1371
1372 /* We didn't cache the SKB; let the caller free it */
1373 return 1;
1374 }
1375
1376 int iwl4965_send_add_station(struct iwl4965_priv *priv,
1377 struct iwl4965_addsta_cmd *sta, u8 flags)
1378 {
1379 struct iwl4965_rx_packet *res = NULL;
1380 int rc = 0;
1381 struct iwl4965_host_cmd cmd = {
1382 .id = REPLY_ADD_STA,
1383 .len = sizeof(struct iwl4965_addsta_cmd),
1384 .meta.flags = flags,
1385 .data = sta,
1386 };
1387
1388 if (flags & CMD_ASYNC)
1389 cmd.meta.u.callback = iwl4965_add_sta_sync_callback;
1390 else
1391 cmd.meta.flags |= CMD_WANT_SKB;
1392
1393 rc = iwl4965_send_cmd(priv, &cmd);
1394
1395 if (rc || (flags & CMD_ASYNC))
1396 return rc;
1397
1398 res = (struct iwl4965_rx_packet *)cmd.meta.u.skb->data;
1399 if (res->hdr.flags & IWL_CMD_FAILED_MSK) {
1400 IWL_ERROR("Bad return from REPLY_ADD_STA (0x%08X)\n",
1401 res->hdr.flags);
1402 rc = -EIO;
1403 }
1404
1405 if (rc == 0) {
1406 switch (res->u.add_sta.status) {
1407 case ADD_STA_SUCCESS_MSK:
1408 IWL_DEBUG_INFO("REPLY_ADD_STA PASSED\n");
1409 break;
1410 default:
1411 rc = -EIO;
1412 IWL_WARNING("REPLY_ADD_STA failed\n");
1413 break;
1414 }
1415 }
1416
1417 priv->alloc_rxb_skb--;
1418 dev_kfree_skb_any(cmd.meta.u.skb);
1419
1420 return rc;
1421 }
1422
1423 static int iwl4965_update_sta_key_info(struct iwl4965_priv *priv,
1424 struct ieee80211_key_conf *keyconf,
1425 u8 sta_id)
1426 {
1427 unsigned long flags;
1428 __le16 key_flags = 0;
1429
1430 switch (keyconf->alg) {
1431 case ALG_CCMP:
1432 key_flags |= STA_KEY_FLG_CCMP;
1433 key_flags |= cpu_to_le16(
1434 keyconf->keyidx << STA_KEY_FLG_KEYID_POS);
1435 key_flags &= ~STA_KEY_FLG_INVALID;
1436 break;
1437 case ALG_TKIP:
1438 case ALG_WEP:
1439 default:
1440 return -EINVAL;
1441 }
1442 spin_lock_irqsave(&priv->sta_lock, flags);
1443 priv->stations[sta_id].keyinfo.alg = keyconf->alg;
1444 priv->stations[sta_id].keyinfo.keylen = keyconf->keylen;
1445 memcpy(priv->stations[sta_id].keyinfo.key, keyconf->key,
1446 keyconf->keylen);
1447
1448 memcpy(priv->stations[sta_id].sta.key.key, keyconf->key,
1449 keyconf->keylen);
1450 priv->stations[sta_id].sta.key.key_flags = key_flags;
1451 priv->stations[sta_id].sta.sta.modify_mask = STA_MODIFY_KEY_MASK;
1452 priv->stations[sta_id].sta.mode = STA_CONTROL_MODIFY_MSK;
1453
1454 spin_unlock_irqrestore(&priv->sta_lock, flags);
1455
1456 IWL_DEBUG_INFO("hwcrypto: modify ucode station key info\n");
1457 iwl4965_send_add_station(priv, &priv->stations[sta_id].sta, 0);
1458 return 0;
1459 }
1460
1461 static int iwl4965_clear_sta_key_info(struct iwl4965_priv *priv, u8 sta_id)
1462 {
1463 unsigned long flags;
1464
1465 spin_lock_irqsave(&priv->sta_lock, flags);
1466 memset(&priv->stations[sta_id].keyinfo, 0, sizeof(struct iwl4965_hw_key));
1467 memset(&priv->stations[sta_id].sta.key, 0, sizeof(struct iwl4965_keyinfo));
1468 priv->stations[sta_id].sta.key.key_flags = STA_KEY_FLG_NO_ENC;
1469 priv->stations[sta_id].sta.sta.modify_mask = STA_MODIFY_KEY_MASK;
1470 priv->stations[sta_id].sta.mode = STA_CONTROL_MODIFY_MSK;
1471 spin_unlock_irqrestore(&priv->sta_lock, flags);
1472
1473 IWL_DEBUG_INFO("hwcrypto: clear ucode station key info\n");
1474 iwl4965_send_add_station(priv, &priv->stations[sta_id].sta, 0);
1475 return 0;
1476 }
1477
1478 static void iwl4965_clear_free_frames(struct iwl4965_priv *priv)
1479 {
1480 struct list_head *element;
1481
1482 IWL_DEBUG_INFO("%d frames on pre-allocated heap on clear.\n",
1483 priv->frames_count);
1484
1485 while (!list_empty(&priv->free_frames)) {
1486 element = priv->free_frames.next;
1487 list_del(element);
1488 kfree(list_entry(element, struct iwl4965_frame, list));
1489 priv->frames_count--;
1490 }
1491
1492 if (priv->frames_count) {
1493 IWL_WARNING("%d frames still in use. Did we lose one?\n",
1494 priv->frames_count);
1495 priv->frames_count = 0;
1496 }
1497 }
1498
1499 static struct iwl4965_frame *iwl4965_get_free_frame(struct iwl4965_priv *priv)
1500 {
1501 struct iwl4965_frame *frame;
1502 struct list_head *element;
1503 if (list_empty(&priv->free_frames)) {
1504 frame = kzalloc(sizeof(*frame), GFP_KERNEL);
1505 if (!frame) {
1506 IWL_ERROR("Could not allocate frame!\n");
1507 return NULL;
1508 }
1509
1510 priv->frames_count++;
1511 return frame;
1512 }
1513
1514 element = priv->free_frames.next;
1515 list_del(element);
1516 return list_entry(element, struct iwl4965_frame, list);
1517 }
1518
1519 static void iwl4965_free_frame(struct iwl4965_priv *priv, struct iwl4965_frame *frame)
1520 {
1521 memset(frame, 0, sizeof(*frame));
1522 list_add(&frame->list, &priv->free_frames);
1523 }
1524
1525 unsigned int iwl4965_fill_beacon_frame(struct iwl4965_priv *priv,
1526 struct ieee80211_hdr *hdr,
1527 const u8 *dest, int left)
1528 {
1529
1530 if (!iwl4965_is_associated(priv) || !priv->ibss_beacon ||
1531 ((priv->iw_mode != IEEE80211_IF_TYPE_IBSS) &&
1532 (priv->iw_mode != IEEE80211_IF_TYPE_AP)))
1533 return 0;
1534
1535 if (priv->ibss_beacon->len > left)
1536 return 0;
1537
1538 memcpy(hdr, priv->ibss_beacon->data, priv->ibss_beacon->len);
1539
1540 return priv->ibss_beacon->len;
1541 }
1542
1543 static u8 iwl4965_rate_get_lowest_plcp(int rate_mask)
1544 {
1545 u8 i;
1546
1547 for (i = IWL_RATE_1M_INDEX; i != IWL_RATE_INVALID;
1548 i = iwl4965_rates[i].next_ieee) {
1549 if (rate_mask & (1 << i))
1550 return iwl4965_rates[i].plcp;
1551 }
1552
1553 return IWL_RATE_INVALID;
1554 }
1555
1556 static int iwl4965_send_beacon_cmd(struct iwl4965_priv *priv)
1557 {
1558 struct iwl4965_frame *frame;
1559 unsigned int frame_size;
1560 int rc;
1561 u8 rate;
1562
1563 frame = iwl4965_get_free_frame(priv);
1564
1565 if (!frame) {
1566 IWL_ERROR("Could not obtain free frame buffer for beacon "
1567 "command.\n");
1568 return -ENOMEM;
1569 }
1570
1571 if (!(priv->staging_rxon.flags & RXON_FLG_BAND_24G_MSK)) {
1572 rate = iwl4965_rate_get_lowest_plcp(priv->active_rate_basic &
1573 0xFF0);
1574 if (rate == IWL_INVALID_RATE)
1575 rate = IWL_RATE_6M_PLCP;
1576 } else {
1577 rate = iwl4965_rate_get_lowest_plcp(priv->active_rate_basic & 0xF);
1578 if (rate == IWL_INVALID_RATE)
1579 rate = IWL_RATE_1M_PLCP;
1580 }
1581
1582 frame_size = iwl4965_hw_get_beacon_cmd(priv, frame, rate);
1583
1584 rc = iwl4965_send_cmd_pdu(priv, REPLY_TX_BEACON, frame_size,
1585 &frame->u.cmd[0]);
1586
1587 iwl4965_free_frame(priv, frame);
1588
1589 return rc;
1590 }
1591
1592 /******************************************************************************
1593 *
1594 * EEPROM related functions
1595 *
1596 ******************************************************************************/
1597
1598 static void get_eeprom_mac(struct iwl4965_priv *priv, u8 *mac)
1599 {
1600 memcpy(mac, priv->eeprom.mac_address, 6);
1601 }
1602
1603 static inline void iwl4965_eeprom_release_semaphore(struct iwl4965_priv *priv)
1604 {
1605 iwl4965_clear_bit(priv, CSR_HW_IF_CONFIG_REG,
1606 CSR_HW_IF_CONFIG_REG_BIT_EEPROM_OWN_SEM);
1607 }
1608
1609 /**
1610 * iwl4965_eeprom_init - read EEPROM contents
1611 *
1612 * Load the EEPROM contents from adapter into priv->eeprom
1613 *
1614 * NOTE: This routine uses the non-debug IO access functions.
1615 */
1616 int iwl4965_eeprom_init(struct iwl4965_priv *priv)
1617 {
1618 u16 *e = (u16 *)&priv->eeprom;
1619 u32 gp = iwl4965_read32(priv, CSR_EEPROM_GP);
1620 u32 r;
1621 int sz = sizeof(priv->eeprom);
1622 int rc;
1623 int i;
1624 u16 addr;
1625
1626 /* The EEPROM structure has several padding buffers within it
1627 * and when adding new EEPROM maps is subject to programmer errors
1628 * which may be very difficult to identify without explicitly
1629 * checking the resulting size of the eeprom map. */
1630 BUILD_BUG_ON(sizeof(priv->eeprom) != IWL_EEPROM_IMAGE_SIZE);
1631
1632 if ((gp & CSR_EEPROM_GP_VALID_MSK) == CSR_EEPROM_GP_BAD_SIGNATURE) {
1633 IWL_ERROR("EEPROM not found, EEPROM_GP=0x%08x", gp);
1634 return -ENOENT;
1635 }
1636
1637 /* Make sure driver (instead of uCode) is allowed to read EEPROM */
1638 rc = iwl4965_eeprom_acquire_semaphore(priv);
1639 if (rc < 0) {
1640 IWL_ERROR("Failed to acquire EEPROM semaphore.\n");
1641 return -ENOENT;
1642 }
1643
1644 /* eeprom is an array of 16bit values */
1645 for (addr = 0; addr < sz; addr += sizeof(u16)) {
1646 _iwl4965_write32(priv, CSR_EEPROM_REG, addr << 1);
1647 _iwl4965_clear_bit(priv, CSR_EEPROM_REG, CSR_EEPROM_REG_BIT_CMD);
1648
1649 for (i = 0; i < IWL_EEPROM_ACCESS_TIMEOUT;
1650 i += IWL_EEPROM_ACCESS_DELAY) {
1651 r = _iwl4965_read_direct32(priv, CSR_EEPROM_REG);
1652 if (r & CSR_EEPROM_REG_READ_VALID_MSK)
1653 break;
1654 udelay(IWL_EEPROM_ACCESS_DELAY);
1655 }
1656
1657 if (!(r & CSR_EEPROM_REG_READ_VALID_MSK)) {
1658 IWL_ERROR("Time out reading EEPROM[%d]", addr);
1659 rc = -ETIMEDOUT;
1660 goto done;
1661 }
1662 e[addr / 2] = le16_to_cpu((__force __le16)(r >> 16));
1663 }
1664 rc = 0;
1665
1666 done:
1667 iwl4965_eeprom_release_semaphore(priv);
1668 return rc;
1669 }
1670
1671 /******************************************************************************
1672 *
1673 * Misc. internal state and helper functions
1674 *
1675 ******************************************************************************/
1676
1677 static void iwl4965_unset_hw_setting(struct iwl4965_priv *priv)
1678 {
1679 if (priv->hw_setting.shared_virt)
1680 pci_free_consistent(priv->pci_dev,
1681 sizeof(struct iwl4965_shared),
1682 priv->hw_setting.shared_virt,
1683 priv->hw_setting.shared_phys);
1684 }
1685
1686 /**
1687 * iwl4965_supported_rate_to_ie - fill in the supported rate in IE field
1688 *
1689 * return : set the bit for each supported rate insert in ie
1690 */
1691 static u16 iwl4965_supported_rate_to_ie(u8 *ie, u16 supported_rate,
1692 u16 basic_rate, int *left)
1693 {
1694 u16 ret_rates = 0, bit;
1695 int i;
1696 u8 *cnt = ie;
1697 u8 *rates = ie + 1;
1698
1699 for (bit = 1, i = 0; i < IWL_RATE_COUNT; i++, bit <<= 1) {
1700 if (bit & supported_rate) {
1701 ret_rates |= bit;
1702 rates[*cnt] = iwl4965_rates[i].ieee |
1703 ((bit & basic_rate) ? 0x80 : 0x00);
1704 (*cnt)++;
1705 (*left)--;
1706 if ((*left <= 0) ||
1707 (*cnt >= IWL_SUPPORTED_RATES_IE_LEN))
1708 break;
1709 }
1710 }
1711
1712 return ret_rates;
1713 }
1714
1715 /**
1716 * iwl4965_fill_probe_req - fill in all required fields and IE for probe request
1717 */
1718 static u16 iwl4965_fill_probe_req(struct iwl4965_priv *priv,
1719 enum ieee80211_band band,
1720 struct ieee80211_mgmt *frame,
1721 int left, int is_direct)
1722 {
1723 int len = 0;
1724 u8 *pos = NULL;
1725 u16 active_rates, ret_rates, cck_rates, active_rate_basic;
1726 #ifdef CONFIG_IWL4965_HT
1727 const struct ieee80211_supported_band *sband =
1728 iwl4965_get_hw_mode(priv, band);
1729 #endif /* CONFIG_IWL4965_HT */
1730
1731 /* Make sure there is enough space for the probe request,
1732 * two mandatory IEs and the data */
1733 left -= 24;
1734 if (left < 0)
1735 return 0;
1736 len += 24;
1737
1738 frame->frame_control = cpu_to_le16(IEEE80211_STYPE_PROBE_REQ);
1739 memcpy(frame->da, iwl4965_broadcast_addr, ETH_ALEN);
1740 memcpy(frame->sa, priv->mac_addr, ETH_ALEN);
1741 memcpy(frame->bssid, iwl4965_broadcast_addr, ETH_ALEN);
1742 frame->seq_ctrl = 0;
1743
1744 /* fill in our indirect SSID IE */
1745 /* ...next IE... */
1746
1747 left -= 2;
1748 if (left < 0)
1749 return 0;
1750 len += 2;
1751 pos = &(frame->u.probe_req.variable[0]);
1752 *pos++ = WLAN_EID_SSID;
1753 *pos++ = 0;
1754
1755 /* fill in our direct SSID IE... */
1756 if (is_direct) {
1757 /* ...next IE... */
1758 left -= 2 + priv->essid_len;
1759 if (left < 0)
1760 return 0;
1761 /* ... fill it in... */
1762 *pos++ = WLAN_EID_SSID;
1763 *pos++ = priv->essid_len;
1764 memcpy(pos, priv->essid, priv->essid_len);
1765 pos += priv->essid_len;
1766 len += 2 + priv->essid_len;
1767 }
1768
1769 /* fill in supported rate */
1770 /* ...next IE... */
1771 left -= 2;
1772 if (left < 0)
1773 return 0;
1774
1775 /* ... fill it in... */
1776 *pos++ = WLAN_EID_SUPP_RATES;
1777 *pos = 0;
1778
1779 /* exclude 60M rate */
1780 active_rates = priv->rates_mask;
1781 active_rates &= ~IWL_RATE_60M_MASK;
1782
1783 active_rate_basic = active_rates & IWL_BASIC_RATES_MASK;
1784
1785 cck_rates = IWL_CCK_RATES_MASK & active_rates;
1786 ret_rates = iwl4965_supported_rate_to_ie(pos, cck_rates,
1787 active_rate_basic, &left);
1788 active_rates &= ~ret_rates;
1789
1790 ret_rates = iwl4965_supported_rate_to_ie(pos, active_rates,
1791 active_rate_basic, &left);
1792 active_rates &= ~ret_rates;
1793
1794 len += 2 + *pos;
1795 pos += (*pos) + 1;
1796 if (active_rates == 0)
1797 goto fill_end;
1798
1799 /* fill in supported extended rate */
1800 /* ...next IE... */
1801 left -= 2;
1802 if (left < 0)
1803 return 0;
1804 /* ... fill it in... */
1805 *pos++ = WLAN_EID_EXT_SUPP_RATES;
1806 *pos = 0;
1807 iwl4965_supported_rate_to_ie(pos, active_rates,
1808 active_rate_basic, &left);
1809 if (*pos > 0)
1810 len += 2 + *pos;
1811
1812 #ifdef CONFIG_IWL4965_HT
1813 if (sband && sband->ht_info.ht_supported) {
1814 struct ieee80211_ht_cap *ht_cap;
1815 pos += (*pos) + 1;
1816 *pos++ = WLAN_EID_HT_CAPABILITY;
1817 *pos++ = sizeof(struct ieee80211_ht_cap);
1818 ht_cap = (struct ieee80211_ht_cap *)pos;
1819 ht_cap->cap_info = cpu_to_le16(sband->ht_info.cap);
1820 memcpy(ht_cap->supp_mcs_set, sband->ht_info.supp_mcs_set, 16);
1821 ht_cap->ampdu_params_info =(sband->ht_info.ampdu_factor &
1822 IEEE80211_HT_CAP_AMPDU_FACTOR) |
1823 ((sband->ht_info.ampdu_density << 2) &
1824 IEEE80211_HT_CAP_AMPDU_DENSITY);
1825 len += 2 + sizeof(struct ieee80211_ht_cap);
1826 }
1827 #endif /*CONFIG_IWL4965_HT */
1828
1829 fill_end:
1830 return (u16)len;
1831 }
1832
1833 /*
1834 * QoS support
1835 */
1836 static int iwl4965_send_qos_params_command(struct iwl4965_priv *priv,
1837 struct iwl4965_qosparam_cmd *qos)
1838 {
1839
1840 return iwl4965_send_cmd_pdu(priv, REPLY_QOS_PARAM,
1841 sizeof(struct iwl4965_qosparam_cmd), qos);
1842 }
1843
1844 static void iwl4965_reset_qos(struct iwl4965_priv *priv)
1845 {
1846 u16 cw_min = 15;
1847 u16 cw_max = 1023;
1848 u8 aifs = 2;
1849 u8 is_legacy = 0;
1850 unsigned long flags;
1851 int i;
1852
1853 spin_lock_irqsave(&priv->lock, flags);
1854 priv->qos_data.qos_active = 0;
1855
1856 if (priv->iw_mode == IEEE80211_IF_TYPE_IBSS) {
1857 if (priv->qos_data.qos_enable)
1858 priv->qos_data.qos_active = 1;
1859 if (!(priv->active_rate & 0xfff0)) {
1860 cw_min = 31;
1861 is_legacy = 1;
1862 }
1863 } else if (priv->iw_mode == IEEE80211_IF_TYPE_AP) {
1864 if (priv->qos_data.qos_enable)
1865 priv->qos_data.qos_active = 1;
1866 } else if (!(priv->staging_rxon.flags & RXON_FLG_SHORT_SLOT_MSK)) {
1867 cw_min = 31;
1868 is_legacy = 1;
1869 }
1870
1871 if (priv->qos_data.qos_active)
1872 aifs = 3;
1873
1874 priv->qos_data.def_qos_parm.ac[0].cw_min = cpu_to_le16(cw_min);
1875 priv->qos_data.def_qos_parm.ac[0].cw_max = cpu_to_le16(cw_max);
1876 priv->qos_data.def_qos_parm.ac[0].aifsn = aifs;
1877 priv->qos_data.def_qos_parm.ac[0].edca_txop = 0;
1878 priv->qos_data.def_qos_parm.ac[0].reserved1 = 0;
1879
1880 if (priv->qos_data.qos_active) {
1881 i = 1;
1882 priv->qos_data.def_qos_parm.ac[i].cw_min = cpu_to_le16(cw_min);
1883 priv->qos_data.def_qos_parm.ac[i].cw_max = cpu_to_le16(cw_max);
1884 priv->qos_data.def_qos_parm.ac[i].aifsn = 7;
1885 priv->qos_data.def_qos_parm.ac[i].edca_txop = 0;
1886 priv->qos_data.def_qos_parm.ac[i].reserved1 = 0;
1887
1888 i = 2;
1889 priv->qos_data.def_qos_parm.ac[i].cw_min =
1890 cpu_to_le16((cw_min + 1) / 2 - 1);
1891 priv->qos_data.def_qos_parm.ac[i].cw_max =
1892 cpu_to_le16(cw_max);
1893 priv->qos_data.def_qos_parm.ac[i].aifsn = 2;
1894 if (is_legacy)
1895 priv->qos_data.def_qos_parm.ac[i].edca_txop =
1896 cpu_to_le16(6016);
1897 else
1898 priv->qos_data.def_qos_parm.ac[i].edca_txop =
1899 cpu_to_le16(3008);
1900 priv->qos_data.def_qos_parm.ac[i].reserved1 = 0;
1901
1902 i = 3;
1903 priv->qos_data.def_qos_parm.ac[i].cw_min =
1904 cpu_to_le16((cw_min + 1) / 4 - 1);
1905 priv->qos_data.def_qos_parm.ac[i].cw_max =
1906 cpu_to_le16((cw_max + 1) / 2 - 1);
1907 priv->qos_data.def_qos_parm.ac[i].aifsn = 2;
1908 priv->qos_data.def_qos_parm.ac[i].reserved1 = 0;
1909 if (is_legacy)
1910 priv->qos_data.def_qos_parm.ac[i].edca_txop =
1911 cpu_to_le16(3264);
1912 else
1913 priv->qos_data.def_qos_parm.ac[i].edca_txop =
1914 cpu_to_le16(1504);
1915 } else {
1916 for (i = 1; i < 4; i++) {
1917 priv->qos_data.def_qos_parm.ac[i].cw_min =
1918 cpu_to_le16(cw_min);
1919 priv->qos_data.def_qos_parm.ac[i].cw_max =
1920 cpu_to_le16(cw_max);
1921 priv->qos_data.def_qos_parm.ac[i].aifsn = aifs;
1922 priv->qos_data.def_qos_parm.ac[i].edca_txop = 0;
1923 priv->qos_data.def_qos_parm.ac[i].reserved1 = 0;
1924 }
1925 }
1926 IWL_DEBUG_QOS("set QoS to default \n");
1927
1928 spin_unlock_irqrestore(&priv->lock, flags);
1929 }
1930
1931 static void iwl4965_activate_qos(struct iwl4965_priv *priv, u8 force)
1932 {
1933 unsigned long flags;
1934
1935 if (test_bit(STATUS_EXIT_PENDING, &priv->status))
1936 return;
1937
1938 if (!priv->qos_data.qos_enable)
1939 return;
1940
1941 spin_lock_irqsave(&priv->lock, flags);
1942 priv->qos_data.def_qos_parm.qos_flags = 0;
1943
1944 if (priv->qos_data.qos_cap.q_AP.queue_request &&
1945 !priv->qos_data.qos_cap.q_AP.txop_request)
1946 priv->qos_data.def_qos_parm.qos_flags |=
1947 QOS_PARAM_FLG_TXOP_TYPE_MSK;
1948 if (priv->qos_data.qos_active)
1949 priv->qos_data.def_qos_parm.qos_flags |=
1950 QOS_PARAM_FLG_UPDATE_EDCA_MSK;
1951
1952 #ifdef CONFIG_IWL4965_HT
1953 if (priv->current_ht_config.is_ht)
1954 priv->qos_data.def_qos_parm.qos_flags |= QOS_PARAM_FLG_TGN_MSK;
1955 #endif /* CONFIG_IWL4965_HT */
1956
1957 spin_unlock_irqrestore(&priv->lock, flags);
1958
1959 if (force || iwl4965_is_associated(priv)) {
1960 IWL_DEBUG_QOS("send QoS cmd with Qos active=%d FLAGS=0x%X\n",
1961 priv->qos_data.qos_active,
1962 priv->qos_data.def_qos_parm.qos_flags);
1963
1964 iwl4965_send_qos_params_command(priv,
1965 &(priv->qos_data.def_qos_parm));
1966 }
1967 }
1968
1969 /*
1970 * Power management (not Tx power!) functions
1971 */
1972 #define MSEC_TO_USEC 1024
1973
1974 #define NOSLP __constant_cpu_to_le16(0), 0, 0
1975 #define SLP IWL_POWER_DRIVER_ALLOW_SLEEP_MSK, 0, 0
1976 #define SLP_TIMEOUT(T) __constant_cpu_to_le32((T) * MSEC_TO_USEC)
1977 #define SLP_VEC(X0, X1, X2, X3, X4) {__constant_cpu_to_le32(X0), \
1978 __constant_cpu_to_le32(X1), \
1979 __constant_cpu_to_le32(X2), \
1980 __constant_cpu_to_le32(X3), \
1981 __constant_cpu_to_le32(X4)}
1982
1983
1984 /* default power management (not Tx power) table values */
1985 /* for tim 0-10 */
1986 static struct iwl4965_power_vec_entry range_0[IWL_POWER_AC] = {
1987 {{NOSLP, SLP_TIMEOUT(0), SLP_TIMEOUT(0), SLP_VEC(0, 0, 0, 0, 0)}, 0},
1988 {{SLP, SLP_TIMEOUT(200), SLP_TIMEOUT(500), SLP_VEC(1, 2, 3, 4, 4)}, 0},
1989 {{SLP, SLP_TIMEOUT(200), SLP_TIMEOUT(300), SLP_VEC(2, 4, 6, 7, 7)}, 0},
1990 {{SLP, SLP_TIMEOUT(50), SLP_TIMEOUT(100), SLP_VEC(2, 6, 9, 9, 10)}, 0},
1991 {{SLP, SLP_TIMEOUT(50), SLP_TIMEOUT(25), SLP_VEC(2, 7, 9, 9, 10)}, 1},
1992 {{SLP, SLP_TIMEOUT(25), SLP_TIMEOUT(25), SLP_VEC(4, 7, 10, 10, 10)}, 1}
1993 };
1994
1995 /* for tim > 10 */
1996 static struct iwl4965_power_vec_entry range_1[IWL_POWER_AC] = {
1997 {{NOSLP, SLP_TIMEOUT(0), SLP_TIMEOUT(0), SLP_VEC(0, 0, 0, 0, 0)}, 0},
1998 {{SLP, SLP_TIMEOUT(200), SLP_TIMEOUT(500),
1999 SLP_VEC(1, 2, 3, 4, 0xFF)}, 0},
2000 {{SLP, SLP_TIMEOUT(200), SLP_TIMEOUT(300),
2001 SLP_VEC(2, 4, 6, 7, 0xFF)}, 0},
2002 {{SLP, SLP_TIMEOUT(50), SLP_TIMEOUT(100),
2003 SLP_VEC(2, 6, 9, 9, 0xFF)}, 0},
2004 {{SLP, SLP_TIMEOUT(50), SLP_TIMEOUT(25), SLP_VEC(2, 7, 9, 9, 0xFF)}, 0},
2005 {{SLP, SLP_TIMEOUT(25), SLP_TIMEOUT(25),
2006 SLP_VEC(4, 7, 10, 10, 0xFF)}, 0}
2007 };
2008
2009 int iwl4965_power_init_handle(struct iwl4965_priv *priv)
2010 {
2011 int rc = 0, i;
2012 struct iwl4965_power_mgr *pow_data;
2013 int size = sizeof(struct iwl4965_power_vec_entry) * IWL_POWER_AC;
2014 u16 pci_pm;
2015
2016 IWL_DEBUG_POWER("Initialize power \n");
2017
2018 pow_data = &(priv->power_data);
2019
2020 memset(pow_data, 0, sizeof(*pow_data));
2021
2022 pow_data->active_index = IWL_POWER_RANGE_0;
2023 pow_data->dtim_val = 0xffff;
2024
2025 memcpy(&pow_data->pwr_range_0[0], &range_0[0], size);
2026 memcpy(&pow_data->pwr_range_1[0], &range_1[0], size);
2027
2028 rc = pci_read_config_word(priv->pci_dev, PCI_LINK_CTRL, &pci_pm);
2029 if (rc != 0)
2030 return 0;
2031 else {
2032 struct iwl4965_powertable_cmd *cmd;
2033
2034 IWL_DEBUG_POWER("adjust power command flags\n");
2035
2036 for (i = 0; i < IWL_POWER_AC; i++) {
2037 cmd = &pow_data->pwr_range_0[i].cmd;
2038
2039 if (pci_pm & 0x1)
2040 cmd->flags &= ~IWL_POWER_PCI_PM_MSK;
2041 else
2042 cmd->flags |= IWL_POWER_PCI_PM_MSK;
2043 }
2044 }
2045 return rc;
2046 }
2047
2048 static int iwl4965_update_power_cmd(struct iwl4965_priv *priv,
2049 struct iwl4965_powertable_cmd *cmd, u32 mode)
2050 {
2051 int rc = 0, i;
2052 u8 skip;
2053 u32 max_sleep = 0;
2054 struct iwl4965_power_vec_entry *range;
2055 u8 period = 0;
2056 struct iwl4965_power_mgr *pow_data;
2057
2058 if (mode > IWL_POWER_INDEX_5) {
2059 IWL_DEBUG_POWER("Error invalid power mode \n");
2060 return -1;
2061 }
2062 pow_data = &(priv->power_data);
2063
2064 if (pow_data->active_index == IWL_POWER_RANGE_0)
2065 range = &pow_data->pwr_range_0[0];
2066 else
2067 range = &pow_data->pwr_range_1[1];
2068
2069 memcpy(cmd, &range[mode].cmd, sizeof(struct iwl4965_powertable_cmd));
2070
2071 #ifdef IWL_MAC80211_DISABLE
2072 if (priv->assoc_network != NULL) {
2073 unsigned long flags;
2074
2075 period = priv->assoc_network->tim.tim_period;
2076 }
2077 #endif /*IWL_MAC80211_DISABLE */
2078 skip = range[mode].no_dtim;
2079
2080 if (period == 0) {
2081 period = 1;
2082 skip = 0;
2083 }
2084
2085 if (skip == 0) {
2086 max_sleep = period;
2087 cmd->flags &= ~IWL_POWER_SLEEP_OVER_DTIM_MSK;
2088 } else {
2089 __le32 slp_itrvl = cmd->sleep_interval[IWL_POWER_VEC_SIZE - 1];
2090 max_sleep = (le32_to_cpu(slp_itrvl) / period) * period;
2091 cmd->flags |= IWL_POWER_SLEEP_OVER_DTIM_MSK;
2092 }
2093
2094 for (i = 0; i < IWL_POWER_VEC_SIZE; i++) {
2095 if (le32_to_cpu(cmd->sleep_interval[i]) > max_sleep)
2096 cmd->sleep_interval[i] = cpu_to_le32(max_sleep);
2097 }
2098
2099 IWL_DEBUG_POWER("Flags value = 0x%08X\n", cmd->flags);
2100 IWL_DEBUG_POWER("Tx timeout = %u\n", le32_to_cpu(cmd->tx_data_timeout));
2101 IWL_DEBUG_POWER("Rx timeout = %u\n", le32_to_cpu(cmd->rx_data_timeout));
2102 IWL_DEBUG_POWER("Sleep interval vector = { %d , %d , %d , %d , %d }\n",
2103 le32_to_cpu(cmd->sleep_interval[0]),
2104 le32_to_cpu(cmd->sleep_interval[1]),
2105 le32_to_cpu(cmd->sleep_interval[2]),
2106 le32_to_cpu(cmd->sleep_interval[3]),
2107 le32_to_cpu(cmd->sleep_interval[4]));
2108
2109 return rc;
2110 }
2111
2112 static int iwl4965_send_power_mode(struct iwl4965_priv *priv, u32 mode)
2113 {
2114 u32 uninitialized_var(final_mode);
2115 int rc;
2116 struct iwl4965_powertable_cmd cmd;
2117
2118 /* If on battery, set to 3,
2119 * if plugged into AC power, set to CAM ("continuously aware mode"),
2120 * else user level */
2121 switch (mode) {
2122 case IWL_POWER_BATTERY:
2123 final_mode = IWL_POWER_INDEX_3;
2124 break;
2125 case IWL_POWER_AC:
2126 final_mode = IWL_POWER_MODE_CAM;
2127 break;
2128 default:
2129 final_mode = mode;
2130 break;
2131 }
2132
2133 cmd.keep_alive_beacons = 0;
2134
2135 iwl4965_update_power_cmd(priv, &cmd, final_mode);
2136
2137 rc = iwl4965_send_cmd_pdu(priv, POWER_TABLE_CMD, sizeof(cmd), &cmd);
2138
2139 if (final_mode == IWL_POWER_MODE_CAM)
2140 clear_bit(STATUS_POWER_PMI, &priv->status);
2141 else
2142 set_bit(STATUS_POWER_PMI, &priv->status);
2143
2144 return rc;
2145 }
2146
2147 int iwl4965_is_network_packet(struct iwl4965_priv *priv, struct ieee80211_hdr *header)
2148 {
2149 /* Filter incoming packets to determine if they are targeted toward
2150 * this network, discarding packets coming from ourselves */
2151 switch (priv->iw_mode) {
2152 case IEEE80211_IF_TYPE_IBSS: /* Header: Dest. | Source | BSSID */
2153 /* packets from our adapter are dropped (echo) */
2154 if (!compare_ether_addr(header->addr2, priv->mac_addr))
2155 return 0;
2156 /* {broad,multi}cast packets to our IBSS go through */
2157 if (is_multicast_ether_addr(header->addr1))
2158 return !compare_ether_addr(header->addr3, priv->bssid);
2159 /* packets to our adapter go through */
2160 return !compare_ether_addr(header->addr1, priv->mac_addr);
2161 case IEEE80211_IF_TYPE_STA: /* Header: Dest. | AP{BSSID} | Source */
2162 /* packets from our adapter are dropped (echo) */
2163 if (!compare_ether_addr(header->addr3, priv->mac_addr))
2164 return 0;
2165 /* {broad,multi}cast packets to our BSS go through */
2166 if (is_multicast_ether_addr(header->addr1))
2167 return !compare_ether_addr(header->addr2, priv->bssid);
2168 /* packets to our adapter go through */
2169 return !compare_ether_addr(header->addr1, priv->mac_addr);
2170 }
2171
2172 return 1;
2173 }
2174
2175 #define TX_STATUS_ENTRY(x) case TX_STATUS_FAIL_ ## x: return #x
2176
2177 static const char *iwl4965_get_tx_fail_reason(u32 status)
2178 {
2179 switch (status & TX_STATUS_MSK) {
2180 case TX_STATUS_SUCCESS:
2181 return "SUCCESS";
2182 TX_STATUS_ENTRY(SHORT_LIMIT);
2183 TX_STATUS_ENTRY(LONG_LIMIT);
2184 TX_STATUS_ENTRY(FIFO_UNDERRUN);
2185 TX_STATUS_ENTRY(MGMNT_ABORT);
2186 TX_STATUS_ENTRY(NEXT_FRAG);
2187 TX_STATUS_ENTRY(LIFE_EXPIRE);
2188 TX_STATUS_ENTRY(DEST_PS);
2189 TX_STATUS_ENTRY(ABORTED);
2190 TX_STATUS_ENTRY(BT_RETRY);
2191 TX_STATUS_ENTRY(STA_INVALID);
2192 TX_STATUS_ENTRY(FRAG_DROPPED);
2193 TX_STATUS_ENTRY(TID_DISABLE);
2194 TX_STATUS_ENTRY(FRAME_FLUSHED);
2195 TX_STATUS_ENTRY(INSUFFICIENT_CF_POLL);
2196 TX_STATUS_ENTRY(TX_LOCKED);
2197 TX_STATUS_ENTRY(NO_BEACON_ON_RADAR);
2198 }
2199
2200 return "UNKNOWN";
2201 }
2202
2203 /**
2204 * iwl4965_scan_cancel - Cancel any currently executing HW scan
2205 *
2206 * NOTE: priv->mutex is not required before calling this function
2207 */
2208 static int iwl4965_scan_cancel(struct iwl4965_priv *priv)
2209 {
2210 if (!test_bit(STATUS_SCAN_HW, &priv->status)) {
2211 clear_bit(STATUS_SCANNING, &priv->status);
2212 return 0;
2213 }
2214
2215 if (test_bit(STATUS_SCANNING, &priv->status)) {
2216 if (!test_bit(STATUS_SCAN_ABORTING, &priv->status)) {
2217 IWL_DEBUG_SCAN("Queuing scan abort.\n");
2218 set_bit(STATUS_SCAN_ABORTING, &priv->status);
2219 queue_work(priv->workqueue, &priv->abort_scan);
2220
2221 } else
2222 IWL_DEBUG_SCAN("Scan abort already in progress.\n");
2223
2224 return test_bit(STATUS_SCANNING, &priv->status);
2225 }
2226
2227 return 0;
2228 }
2229
2230 /**
2231 * iwl4965_scan_cancel_timeout - Cancel any currently executing HW scan
2232 * @ms: amount of time to wait (in milliseconds) for scan to abort
2233 *
2234 * NOTE: priv->mutex must be held before calling this function
2235 */
2236 static int iwl4965_scan_cancel_timeout(struct iwl4965_priv *priv, unsigned long ms)
2237 {
2238 unsigned long now = jiffies;
2239 int ret;
2240
2241 ret = iwl4965_scan_cancel(priv);
2242 if (ret && ms) {
2243 mutex_unlock(&priv->mutex);
2244 while (!time_after(jiffies, now + msecs_to_jiffies(ms)) &&
2245 test_bit(STATUS_SCANNING, &priv->status))
2246 msleep(1);
2247 mutex_lock(&priv->mutex);
2248
2249 return test_bit(STATUS_SCANNING, &priv->status);
2250 }
2251
2252 return ret;
2253 }
2254
2255 static void iwl4965_sequence_reset(struct iwl4965_priv *priv)
2256 {
2257 /* Reset ieee stats */
2258
2259 /* We don't reset the net_device_stats (ieee->stats) on
2260 * re-association */
2261
2262 priv->last_seq_num = -1;
2263 priv->last_frag_num = -1;
2264 priv->last_packet_time = 0;
2265
2266 iwl4965_scan_cancel(priv);
2267 }
2268
2269 #define MAX_UCODE_BEACON_INTERVAL 4096
2270 #define INTEL_CONN_LISTEN_INTERVAL __constant_cpu_to_le16(0xA)
2271
2272 static __le16 iwl4965_adjust_beacon_interval(u16 beacon_val)
2273 {
2274 u16 new_val = 0;
2275 u16 beacon_factor = 0;
2276
2277 beacon_factor =
2278 (beacon_val + MAX_UCODE_BEACON_INTERVAL)
2279 / MAX_UCODE_BEACON_INTERVAL;
2280 new_val = beacon_val / beacon_factor;
2281
2282 return cpu_to_le16(new_val);
2283 }
2284
2285 static void iwl4965_setup_rxon_timing(struct iwl4965_priv *priv)
2286 {
2287 u64 interval_tm_unit;
2288 u64 tsf, result;
2289 unsigned long flags;
2290 struct ieee80211_conf *conf = NULL;
2291 u16 beacon_int = 0;
2292
2293 conf = ieee80211_get_hw_conf(priv->hw);
2294
2295 spin_lock_irqsave(&priv->lock, flags);
2296 priv->rxon_timing.timestamp.dw[1] = cpu_to_le32(priv->timestamp1);
2297 priv->rxon_timing.timestamp.dw[0] = cpu_to_le32(priv->timestamp0);
2298
2299 priv->rxon_timing.listen_interval = INTEL_CONN_LISTEN_INTERVAL;
2300
2301 tsf = priv->timestamp1;
2302 tsf = ((tsf << 32) | priv->timestamp0);
2303
2304 beacon_int = priv->beacon_int;
2305 spin_unlock_irqrestore(&priv->lock, flags);
2306
2307 if (priv->iw_mode == IEEE80211_IF_TYPE_STA) {
2308 if (beacon_int == 0) {
2309 priv->rxon_timing.beacon_interval = cpu_to_le16(100);
2310 priv->rxon_timing.beacon_init_val = cpu_to_le32(102400);
2311 } else {
2312 priv->rxon_timing.beacon_interval =
2313 cpu_to_le16(beacon_int);
2314 priv->rxon_timing.beacon_interval =
2315 iwl4965_adjust_beacon_interval(
2316 le16_to_cpu(priv->rxon_timing.beacon_interval));
2317 }
2318
2319 priv->rxon_timing.atim_window = 0;
2320 } else {
2321 priv->rxon_timing.beacon_interval =
2322 iwl4965_adjust_beacon_interval(conf->beacon_int);
2323 /* TODO: we need to get atim_window from upper stack
2324 * for now we set to 0 */
2325 priv->rxon_timing.atim_window = 0;
2326 }
2327
2328 interval_tm_unit =
2329 (le16_to_cpu(priv->rxon_timing.beacon_interval) * 1024);
2330 result = do_div(tsf, interval_tm_unit);
2331 priv->rxon_timing.beacon_init_val =
2332 cpu_to_le32((u32) ((u64) interval_tm_unit - result));
2333
2334 IWL_DEBUG_ASSOC
2335 ("beacon interval %d beacon timer %d beacon tim %d\n",
2336 le16_to_cpu(priv->rxon_timing.beacon_interval),
2337 le32_to_cpu(priv->rxon_timing.beacon_init_val),
2338 le16_to_cpu(priv->rxon_timing.atim_window));
2339 }
2340
2341 static int iwl4965_scan_initiate(struct iwl4965_priv *priv)
2342 {
2343 if (priv->iw_mode == IEEE80211_IF_TYPE_AP) {
2344 IWL_ERROR("APs don't scan.\n");
2345 return 0;
2346 }
2347
2348 if (!iwl4965_is_ready_rf(priv)) {
2349 IWL_DEBUG_SCAN("Aborting scan due to not ready.\n");
2350 return -EIO;
2351 }
2352
2353 if (test_bit(STATUS_SCANNING, &priv->status)) {
2354 IWL_DEBUG_SCAN("Scan already in progress.\n");
2355 return -EAGAIN;
2356 }
2357
2358 if (test_bit(STATUS_SCAN_ABORTING, &priv->status)) {
2359 IWL_DEBUG_SCAN("Scan request while abort pending. "
2360 "Queuing.\n");
2361 return -EAGAIN;
2362 }
2363
2364 IWL_DEBUG_INFO("Starting scan...\n");
2365 priv->scan_bands = 2;
2366 set_bit(STATUS_SCANNING, &priv->status);
2367 priv->scan_start = jiffies;
2368 priv->scan_pass_start = priv->scan_start;
2369
2370 queue_work(priv->workqueue, &priv->request_scan);
2371
2372 return 0;
2373 }
2374
2375 static int iwl4965_set_rxon_hwcrypto(struct iwl4965_priv *priv, int hw_decrypt)
2376 {
2377 struct iwl4965_rxon_cmd *rxon = &priv->staging_rxon;
2378
2379 if (hw_decrypt)
2380 rxon->filter_flags &= ~RXON_FILTER_DIS_DECRYPT_MSK;
2381 else
2382 rxon->filter_flags |= RXON_FILTER_DIS_DECRYPT_MSK;
2383
2384 return 0;
2385 }
2386
2387 static void iwl4965_set_flags_for_phymode(struct iwl4965_priv *priv,
2388 enum ieee80211_band band)
2389 {
2390 if (band == IEEE80211_BAND_5GHZ) {
2391 priv->staging_rxon.flags &=
2392 ~(RXON_FLG_BAND_24G_MSK | RXON_FLG_AUTO_DETECT_MSK
2393 | RXON_FLG_CCK_MSK);
2394 priv->staging_rxon.flags |= RXON_FLG_SHORT_SLOT_MSK;
2395 } else {
2396 /* Copied from iwl4965_bg_post_associate() */
2397 if (priv->assoc_capability & WLAN_CAPABILITY_SHORT_SLOT_TIME)
2398 priv->staging_rxon.flags |= RXON_FLG_SHORT_SLOT_MSK;
2399 else
2400 priv->staging_rxon.flags &= ~RXON_FLG_SHORT_SLOT_MSK;
2401
2402 if (priv->iw_mode == IEEE80211_IF_TYPE_IBSS)
2403 priv->staging_rxon.flags &= ~RXON_FLG_SHORT_SLOT_MSK;
2404
2405 priv->staging_rxon.flags |= RXON_FLG_BAND_24G_MSK;
2406 priv->staging_rxon.flags |= RXON_FLG_AUTO_DETECT_MSK;
2407 priv->staging_rxon.flags &= ~RXON_FLG_CCK_MSK;
2408 }
2409 }
2410
2411 /*
2412 * initialize rxon structure with default values from eeprom
2413 */
2414 static void iwl4965_connection_init_rx_config(struct iwl4965_priv *priv)
2415 {
2416 const struct iwl4965_channel_info *ch_info;
2417
2418 memset(&priv->staging_rxon, 0, sizeof(priv->staging_rxon));
2419
2420 switch (priv->iw_mode) {
2421 case IEEE80211_IF_TYPE_AP:
2422 priv->staging_rxon.dev_type = RXON_DEV_TYPE_AP;
2423 break;
2424
2425 case IEEE80211_IF_TYPE_STA:
2426 priv->staging_rxon.dev_type = RXON_DEV_TYPE_ESS;
2427 priv->staging_rxon.filter_flags = RXON_FILTER_ACCEPT_GRP_MSK;
2428 break;
2429
2430 case IEEE80211_IF_TYPE_IBSS:
2431 priv->staging_rxon.dev_type = RXON_DEV_TYPE_IBSS;
2432 priv->staging_rxon.flags = RXON_FLG_SHORT_PREAMBLE_MSK;
2433 priv->staging_rxon.filter_flags = RXON_FILTER_BCON_AWARE_MSK |
2434 RXON_FILTER_ACCEPT_GRP_MSK;
2435 break;
2436
2437 case IEEE80211_IF_TYPE_MNTR:
2438 priv->staging_rxon.dev_type = RXON_DEV_TYPE_SNIFFER;
2439 priv->staging_rxon.filter_flags = RXON_FILTER_PROMISC_MSK |
2440 RXON_FILTER_CTL2HOST_MSK | RXON_FILTER_ACCEPT_GRP_MSK;
2441 break;
2442 }
2443
2444 #if 0
2445 /* TODO: Figure out when short_preamble would be set and cache from
2446 * that */
2447 if (!hw_to_local(priv->hw)->short_preamble)
2448 priv->staging_rxon.flags &= ~RXON_FLG_SHORT_PREAMBLE_MSK;
2449 else
2450 priv->staging_rxon.flags |= RXON_FLG_SHORT_PREAMBLE_MSK;
2451 #endif
2452
2453 ch_info = iwl4965_get_channel_info(priv, priv->band,
2454 le16_to_cpu(priv->staging_rxon.channel));
2455
2456 if (!ch_info)
2457 ch_info = &priv->channel_info[0];
2458
2459 /*
2460 * in some case A channels are all non IBSS
2461 * in this case force B/G channel
2462 */
2463 if ((priv->iw_mode == IEEE80211_IF_TYPE_IBSS) &&
2464 !(is_channel_ibss(ch_info)))
2465 ch_info = &priv->channel_info[0];
2466
2467 priv->staging_rxon.channel = cpu_to_le16(ch_info->channel);
2468 priv->band = ch_info->band;
2469
2470 iwl4965_set_flags_for_phymode(priv, priv->band);
2471
2472 priv->staging_rxon.ofdm_basic_rates =
2473 (IWL_OFDM_RATES_MASK >> IWL_FIRST_OFDM_RATE) & 0xFF;
2474 priv->staging_rxon.cck_basic_rates =
2475 (IWL_CCK_RATES_MASK >> IWL_FIRST_CCK_RATE) & 0xF;
2476
2477 priv->staging_rxon.flags &= ~(RXON_FLG_CHANNEL_MODE_MIXED_MSK |
2478 RXON_FLG_CHANNEL_MODE_PURE_40_MSK);
2479 memcpy(priv->staging_rxon.node_addr, priv->mac_addr, ETH_ALEN);
2480 memcpy(priv->staging_rxon.wlap_bssid_addr, priv->mac_addr, ETH_ALEN);
2481 priv->staging_rxon.ofdm_ht_single_stream_basic_rates = 0xff;
2482 priv->staging_rxon.ofdm_ht_dual_stream_basic_rates = 0xff;
2483 iwl4965_set_rxon_chain(priv);
2484 }
2485
2486 static int iwl4965_set_mode(struct iwl4965_priv *priv, int mode)
2487 {
2488 if (mode == IEEE80211_IF_TYPE_IBSS) {
2489 const struct iwl4965_channel_info *ch_info;
2490
2491 ch_info = iwl4965_get_channel_info(priv,
2492 priv->band,
2493 le16_to_cpu(priv->staging_rxon.channel));
2494
2495 if (!ch_info || !is_channel_ibss(ch_info)) {
2496 IWL_ERROR("channel %d not IBSS channel\n",
2497 le16_to_cpu(priv->staging_rxon.channel));
2498 return -EINVAL;
2499 }
2500 }
2501
2502 priv->iw_mode = mode;
2503
2504 iwl4965_connection_init_rx_config(priv);
2505 memcpy(priv->staging_rxon.node_addr, priv->mac_addr, ETH_ALEN);
2506
2507 iwl4965_clear_stations_table(priv);
2508
2509 /* dont commit rxon if rf-kill is on*/
2510 if (!iwl4965_is_ready_rf(priv))
2511 return -EAGAIN;
2512
2513 cancel_delayed_work(&priv->scan_check);
2514 if (iwl4965_scan_cancel_timeout(priv, 100)) {
2515 IWL_WARNING("Aborted scan still in progress after 100ms\n");
2516 IWL_DEBUG_MAC80211("leaving - scan abort failed.\n");
2517 return -EAGAIN;
2518 }
2519
2520 iwl4965_commit_rxon(priv);
2521
2522 return 0;
2523 }
2524
2525 static void iwl4965_build_tx_cmd_hwcrypto(struct iwl4965_priv *priv,
2526 struct ieee80211_tx_control *ctl,
2527 struct iwl4965_cmd *cmd,
2528 struct sk_buff *skb_frag,
2529 int last_frag)
2530 {
2531 struct iwl4965_hw_key *keyinfo = &priv->stations[ctl->key_idx].keyinfo;
2532
2533 switch (keyinfo->alg) {
2534 case ALG_CCMP:
2535 cmd->cmd.tx.sec_ctl = TX_CMD_SEC_CCM;
2536 memcpy(cmd->cmd.tx.key, keyinfo->key, keyinfo->keylen);
2537 IWL_DEBUG_TX("tx_cmd with aes hwcrypto\n");
2538 break;
2539
2540 case ALG_TKIP:
2541 #if 0
2542 cmd->cmd.tx.sec_ctl = TX_CMD_SEC_TKIP;
2543
2544 if (last_frag)
2545 memcpy(cmd->cmd.tx.tkip_mic.byte, skb_frag->tail - 8,
2546 8);
2547 else
2548 memset(cmd->cmd.tx.tkip_mic.byte, 0, 8);
2549 #endif
2550 break;
2551
2552 case ALG_WEP:
2553 cmd->cmd.tx.sec_ctl = TX_CMD_SEC_WEP |
2554 (ctl->key_idx & TX_CMD_SEC_MSK) << TX_CMD_SEC_SHIFT;
2555
2556 if (keyinfo->keylen == 13)
2557 cmd->cmd.tx.sec_ctl |= TX_CMD_SEC_KEY128;
2558
2559 memcpy(&cmd->cmd.tx.key[3], keyinfo->key, keyinfo->keylen);
2560
2561 IWL_DEBUG_TX("Configuring packet for WEP encryption "
2562 "with key %d\n", ctl->key_idx);
2563 break;
2564
2565 default:
2566 printk(KERN_ERR "Unknown encode alg %d\n", keyinfo->alg);
2567 break;
2568 }
2569 }
2570
2571 /*
2572 * handle build REPLY_TX command notification.
2573 */
2574 static void iwl4965_build_tx_cmd_basic(struct iwl4965_priv *priv,
2575 struct iwl4965_cmd *cmd,
2576 struct ieee80211_tx_control *ctrl,
2577 struct ieee80211_hdr *hdr,
2578 int is_unicast, u8 std_id)
2579 {
2580 __le16 *qc;
2581 u16 fc = le16_to_cpu(hdr->frame_control);
2582 __le32 tx_flags = cmd->cmd.tx.tx_flags;
2583
2584 cmd->cmd.tx.stop_time.life_time = TX_CMD_LIFE_TIME_INFINITE;
2585 if (!(ctrl->flags & IEEE80211_TXCTL_NO_ACK)) {
2586 tx_flags |= TX_CMD_FLG_ACK_MSK;
2587 if ((fc & IEEE80211_FCTL_FTYPE) == IEEE80211_FTYPE_MGMT)
2588 tx_flags |= TX_CMD_FLG_SEQ_CTL_MSK;
2589 if (ieee80211_is_probe_response(fc) &&
2590 !(le16_to_cpu(hdr->seq_ctrl) & 0xf))
2591 tx_flags |= TX_CMD_FLG_TSF_MSK;
2592 } else {
2593 tx_flags &= (~TX_CMD_FLG_ACK_MSK);
2594 tx_flags |= TX_CMD_FLG_SEQ_CTL_MSK;
2595 }
2596
2597 if (ieee80211_is_back_request(fc))
2598 tx_flags |= TX_CMD_FLG_ACK_MSK | TX_CMD_FLG_IMM_BA_RSP_MASK;
2599
2600
2601 cmd->cmd.tx.sta_id = std_id;
2602 if (ieee80211_get_morefrag(hdr))
2603 tx_flags |= TX_CMD_FLG_MORE_FRAG_MSK;
2604
2605 qc = ieee80211_get_qos_ctrl(hdr);
2606 if (qc) {
2607 cmd->cmd.tx.tid_tspec = (u8) (le16_to_cpu(*qc) & 0xf);
2608 tx_flags &= ~TX_CMD_FLG_SEQ_CTL_MSK;
2609 } else
2610 tx_flags |= TX_CMD_FLG_SEQ_CTL_MSK;
2611
2612 if (ctrl->flags & IEEE80211_TXCTL_USE_RTS_CTS) {
2613 tx_flags |= TX_CMD_FLG_RTS_MSK;
2614 tx_flags &= ~TX_CMD_FLG_CTS_MSK;
2615 } else if (ctrl->flags & IEEE80211_TXCTL_USE_CTS_PROTECT) {
2616 tx_flags &= ~TX_CMD_FLG_RTS_MSK;
2617 tx_flags |= TX_CMD_FLG_CTS_MSK;
2618 }
2619
2620 if ((tx_flags & TX_CMD_FLG_RTS_MSK) || (tx_flags & TX_CMD_FLG_CTS_MSK))
2621 tx_flags |= TX_CMD_FLG_FULL_TXOP_PROT_MSK;
2622
2623 tx_flags &= ~(TX_CMD_FLG_ANT_SEL_MSK);
2624 if ((fc & IEEE80211_FCTL_FTYPE) == IEEE80211_FTYPE_MGMT) {
2625 if ((fc & IEEE80211_FCTL_STYPE) == IEEE80211_STYPE_ASSOC_REQ ||
2626 (fc & IEEE80211_FCTL_STYPE) == IEEE80211_STYPE_REASSOC_REQ)
2627 cmd->cmd.tx.timeout.pm_frame_timeout = cpu_to_le16(3);
2628 else
2629 cmd->cmd.tx.timeout.pm_frame_timeout = cpu_to_le16(2);
2630 } else
2631 cmd->cmd.tx.timeout.pm_frame_timeout = 0;
2632
2633 cmd->cmd.tx.driver_txop = 0;
2634 cmd->cmd.tx.tx_flags = tx_flags;
2635 cmd->cmd.tx.next_frame_len = 0;
2636 }
2637
2638 /**
2639 * iwl4965_get_sta_id - Find station's index within station table
2640 *
2641 * If new IBSS station, create new entry in station table
2642 */
2643 static int iwl4965_get_sta_id(struct iwl4965_priv *priv,
2644 struct ieee80211_hdr *hdr)
2645 {
2646 int sta_id;
2647 u16 fc = le16_to_cpu(hdr->frame_control);
2648 DECLARE_MAC_BUF(mac);
2649
2650 /* If this frame is broadcast or management, use broadcast station id */
2651 if (((fc & IEEE80211_FCTL_FTYPE) != IEEE80211_FTYPE_DATA) ||
2652 is_multicast_ether_addr(hdr->addr1))
2653 return priv->hw_setting.bcast_sta_id;
2654
2655 switch (priv->iw_mode) {
2656
2657 /* If we are a client station in a BSS network, use the special
2658 * AP station entry (that's the only station we communicate with) */
2659 case IEEE80211_IF_TYPE_STA:
2660 return IWL_AP_ID;
2661
2662 /* If we are an AP, then find the station, or use BCAST */
2663 case IEEE80211_IF_TYPE_AP:
2664 sta_id = iwl4965_hw_find_station(priv, hdr->addr1);
2665 if (sta_id != IWL_INVALID_STATION)
2666 return sta_id;
2667 return priv->hw_setting.bcast_sta_id;
2668
2669 /* If this frame is going out to an IBSS network, find the station,
2670 * or create a new station table entry */
2671 case IEEE80211_IF_TYPE_IBSS:
2672 sta_id = iwl4965_hw_find_station(priv, hdr->addr1);
2673 if (sta_id != IWL_INVALID_STATION)
2674 return sta_id;
2675
2676 /* Create new station table entry */
2677 sta_id = iwl4965_add_station_flags(priv, hdr->addr1,
2678 0, CMD_ASYNC, NULL);
2679
2680 if (sta_id != IWL_INVALID_STATION)
2681 return sta_id;
2682
2683 IWL_DEBUG_DROP("Station %s not in station map. "
2684 "Defaulting to broadcast...\n",
2685 print_mac(mac, hdr->addr1));
2686 iwl4965_print_hex_dump(IWL_DL_DROP, (u8 *) hdr, sizeof(*hdr));
2687 return priv->hw_setting.bcast_sta_id;
2688
2689 default:
2690 IWL_WARNING("Unknown mode of operation: %d", priv->iw_mode);
2691 return priv->hw_setting.bcast_sta_id;
2692 }
2693 }
2694
2695 /*
2696 * start REPLY_TX command process
2697 */
2698 static int iwl4965_tx_skb(struct iwl4965_priv *priv,
2699 struct sk_buff *skb, struct ieee80211_tx_control *ctl)
2700 {
2701 struct ieee80211_hdr *hdr = (struct ieee80211_hdr *)skb->data;
2702 struct iwl4965_tfd_frame *tfd;
2703 u32 *control_flags;
2704 int txq_id = ctl->queue;
2705 struct iwl4965_tx_queue *txq = NULL;
2706 struct iwl4965_queue *q = NULL;
2707 dma_addr_t phys_addr;
2708 dma_addr_t txcmd_phys;
2709 dma_addr_t scratch_phys;
2710 struct iwl4965_cmd *out_cmd = NULL;
2711 u16 len, idx, len_org;
2712 u8 id, hdr_len, unicast;
2713 u8 sta_id;
2714 u16 seq_number = 0;
2715 u16 fc;
2716 __le16 *qc;
2717 u8 wait_write_ptr = 0;
2718 unsigned long flags;
2719 int rc;
2720
2721 spin_lock_irqsave(&priv->lock, flags);
2722 if (iwl4965_is_rfkill(priv)) {
2723 IWL_DEBUG_DROP("Dropping - RF KILL\n");
2724 goto drop_unlock;
2725 }
2726
2727 if (!priv->vif) {
2728 IWL_DEBUG_DROP("Dropping - !priv->vif\n");
2729 goto drop_unlock;
2730 }
2731
2732 if ((ctl->tx_rate->hw_value & 0xFF) == IWL_INVALID_RATE) {
2733 IWL_ERROR("ERROR: No TX rate available.\n");
2734 goto drop_unlock;
2735 }
2736
2737 unicast = !is_multicast_ether_addr(hdr->addr1);
2738 id = 0;
2739
2740 fc = le16_to_cpu(hdr->frame_control);
2741
2742 #ifdef CONFIG_IWL4965_DEBUG
2743 if (ieee80211_is_auth(fc))
2744 IWL_DEBUG_TX("Sending AUTH frame\n");
2745 else if (ieee80211_is_assoc_request(fc))
2746 IWL_DEBUG_TX("Sending ASSOC frame\n");
2747 else if (ieee80211_is_reassoc_request(fc))
2748 IWL_DEBUG_TX("Sending REASSOC frame\n");
2749 #endif
2750
2751 /* drop all data frame if we are not associated */
2752 if (((fc & IEEE80211_FCTL_FTYPE) == IEEE80211_FTYPE_DATA) &&
2753 (!iwl4965_is_associated(priv) ||
2754 ((priv->iw_mode == IEEE80211_IF_TYPE_STA) && !priv->assoc_id) ||
2755 !priv->assoc_station_added)) {
2756 IWL_DEBUG_DROP("Dropping - !iwl4965_is_associated\n");
2757 goto drop_unlock;
2758 }
2759
2760 spin_unlock_irqrestore(&priv->lock, flags);
2761
2762 hdr_len = ieee80211_get_hdrlen(fc);
2763
2764 /* Find (or create) index into station table for destination station */
2765 sta_id = iwl4965_get_sta_id(priv, hdr);
2766 if (sta_id == IWL_INVALID_STATION) {
2767 DECLARE_MAC_BUF(mac);
2768
2769 IWL_DEBUG_DROP("Dropping - INVALID STATION: %s\n",
2770 print_mac(mac, hdr->addr1));
2771 goto drop;
2772 }
2773
2774 IWL_DEBUG_RATE("station Id %d\n", sta_id);
2775
2776 qc = ieee80211_get_qos_ctrl(hdr);
2777 if (qc) {
2778 u8 tid = (u8)(le16_to_cpu(*qc) & 0xf);
2779 seq_number = priv->stations[sta_id].tid[tid].seq_number &
2780 IEEE80211_SCTL_SEQ;
2781 hdr->seq_ctrl = cpu_to_le16(seq_number) |
2782 (hdr->seq_ctrl &
2783 __constant_cpu_to_le16(IEEE80211_SCTL_FRAG));
2784 seq_number += 0x10;
2785 #ifdef CONFIG_IWL4965_HT
2786 /* aggregation is on for this <sta,tid> */
2787 if (ctl->flags & IEEE80211_TXCTL_AMPDU)
2788 txq_id = priv->stations[sta_id].tid[tid].agg.txq_id;
2789 priv->stations[sta_id].tid[tid].tfds_in_queue++;
2790 #endif /* CONFIG_IWL4965_HT */
2791 }
2792
2793 /* Descriptor for chosen Tx queue */
2794 txq = &priv->txq[txq_id];
2795 q = &txq->q;
2796
2797 spin_lock_irqsave(&priv->lock, flags);
2798
2799 /* Set up first empty TFD within this queue's circular TFD buffer */
2800 tfd = &txq->bd[q->write_ptr];
2801 memset(tfd, 0, sizeof(*tfd));
2802 control_flags = (u32 *) tfd;
2803 idx = get_cmd_index(q, q->write_ptr, 0);
2804
2805 /* Set up driver data for this TFD */
2806 memset(&(txq->txb[q->write_ptr]), 0, sizeof(struct iwl4965_tx_info));
2807 txq->txb[q->write_ptr].skb[0] = skb;
2808 memcpy(&(txq->txb[q->write_ptr].status.control),
2809 ctl, sizeof(struct ieee80211_tx_control));
2810
2811 /* Set up first empty entry in queue's array of Tx/cmd buffers */
2812 out_cmd = &txq->cmd[idx];
2813 memset(&out_cmd->hdr, 0, sizeof(out_cmd->hdr));
2814 memset(&out_cmd->cmd.tx, 0, sizeof(out_cmd->cmd.tx));
2815
2816 /*
2817 * Set up the Tx-command (not MAC!) header.
2818 * Store the chosen Tx queue and TFD index within the sequence field;
2819 * after Tx, uCode's Tx response will return this value so driver can
2820 * locate the frame within the tx queue and do post-tx processing.
2821 */
2822 out_cmd->hdr.cmd = REPLY_TX;
2823 out_cmd->hdr.sequence = cpu_to_le16((u16)(QUEUE_TO_SEQ(txq_id) |
2824 INDEX_TO_SEQ(q->write_ptr)));
2825
2826 /* Copy MAC header from skb into command buffer */
2827 memcpy(out_cmd->cmd.tx.hdr, hdr, hdr_len);
2828
2829 /*
2830 * Use the first empty entry in this queue's command buffer array
2831 * to contain the Tx command and MAC header concatenated together
2832 * (payload data will be in another buffer).
2833 * Size of this varies, due to varying MAC header length.
2834 * If end is not dword aligned, we'll have 2 extra bytes at the end
2835 * of the MAC header (device reads on dword boundaries).
2836 * We'll tell device about this padding later.
2837 */
2838 len = priv->hw_setting.tx_cmd_len +
2839 sizeof(struct iwl4965_cmd_header) + hdr_len;
2840
2841 len_org = len;
2842 len = (len + 3) & ~3;
2843
2844 if (len_org != len)
2845 len_org = 1;
2846 else
2847 len_org = 0;
2848
2849 /* Physical address of this Tx command's header (not MAC header!),
2850 * within command buffer array. */
2851 txcmd_phys = txq->dma_addr_cmd + sizeof(struct iwl4965_cmd) * idx +
2852 offsetof(struct iwl4965_cmd, hdr);
2853
2854 /* Add buffer containing Tx command and MAC(!) header to TFD's
2855 * first entry */
2856 iwl4965_hw_txq_attach_buf_to_tfd(priv, tfd, txcmd_phys, len);
2857
2858 if (!(ctl->flags & IEEE80211_TXCTL_DO_NOT_ENCRYPT))
2859 iwl4965_build_tx_cmd_hwcrypto(priv, ctl, out_cmd, skb, 0);
2860
2861 /* Set up TFD's 2nd entry to point directly to remainder of skb,
2862 * if any (802.11 null frames have no payload). */
2863 len = skb->len - hdr_len;
2864 if (len) {
2865 phys_addr = pci_map_single(priv->pci_dev, skb->data + hdr_len,
2866 len, PCI_DMA_TODEVICE);
2867 iwl4965_hw_txq_attach_buf_to_tfd(priv, tfd, phys_addr, len);
2868 }
2869
2870 /* Tell 4965 about any 2-byte padding after MAC header */
2871 if (len_org)
2872 out_cmd->cmd.tx.tx_flags |= TX_CMD_FLG_MH_PAD_MSK;
2873
2874 /* Total # bytes to be transmitted */
2875 len = (u16)skb->len;
2876 out_cmd->cmd.tx.len = cpu_to_le16(len);
2877
2878 /* TODO need this for burst mode later on */
2879 iwl4965_build_tx_cmd_basic(priv, out_cmd, ctl, hdr, unicast, sta_id);
2880
2881 /* set is_hcca to 0; it probably will never be implemented */
2882 iwl4965_hw_build_tx_cmd_rate(priv, out_cmd, ctl, hdr, sta_id, 0);
2883
2884 scratch_phys = txcmd_phys + sizeof(struct iwl4965_cmd_header) +
2885 offsetof(struct iwl4965_tx_cmd, scratch);
2886 out_cmd->cmd.tx.dram_lsb_ptr = cpu_to_le32(scratch_phys);
2887 out_cmd->cmd.tx.dram_msb_ptr = iwl_get_dma_hi_address(scratch_phys);
2888
2889 if (!ieee80211_get_morefrag(hdr)) {
2890 txq->need_update = 1;
2891 if (qc) {
2892 u8 tid = (u8)(le16_to_cpu(*qc) & 0xf);
2893 priv->stations[sta_id].tid[tid].seq_number = seq_number;
2894 }
2895 } else {
2896 wait_write_ptr = 1;
2897 txq->need_update = 0;
2898 }
2899
2900 iwl4965_print_hex_dump(IWL_DL_TX, out_cmd->cmd.payload,
2901 sizeof(out_cmd->cmd.tx));
2902
2903 iwl4965_print_hex_dump(IWL_DL_TX, (u8 *)out_cmd->cmd.tx.hdr,
2904 ieee80211_get_hdrlen(fc));
2905
2906 /* Set up entry for this TFD in Tx byte-count array */
2907 iwl4965_tx_queue_update_wr_ptr(priv, txq, len);
2908
2909 /* Tell device the write index *just past* this latest filled TFD */
2910 q->write_ptr = iwl4965_queue_inc_wrap(q->write_ptr, q->n_bd);
2911 rc = iwl4965_tx_queue_update_write_ptr(priv, txq);
2912 spin_unlock_irqrestore(&priv->lock, flags);
2913
2914 if (rc)
2915 return rc;
2916
2917 if ((iwl4965_queue_space(q) < q->high_mark)
2918 && priv->mac80211_registered) {
2919 if (wait_write_ptr) {
2920 spin_lock_irqsave(&priv->lock, flags);
2921 txq->need_update = 1;
2922 iwl4965_tx_queue_update_write_ptr(priv, txq);
2923 spin_unlock_irqrestore(&priv->lock, flags);
2924 }
2925
2926 ieee80211_stop_queue(priv->hw, ctl->queue);
2927 }
2928
2929 return 0;
2930
2931 drop_unlock:
2932 spin_unlock_irqrestore(&priv->lock, flags);
2933 drop:
2934 return -1;
2935 }
2936
2937 static void iwl4965_set_rate(struct iwl4965_priv *priv)
2938 {
2939 const struct ieee80211_supported_band *hw = NULL;
2940 struct ieee80211_rate *rate;
2941 int i;
2942
2943 hw = iwl4965_get_hw_mode(priv, priv->band);
2944 if (!hw) {
2945 IWL_ERROR("Failed to set rate: unable to get hw mode\n");
2946 return;
2947 }
2948
2949 priv->active_rate = 0;
2950 priv->active_rate_basic = 0;
2951
2952 for (i = 0; i < hw->n_bitrates; i++) {
2953 rate = &(hw->bitrates[i]);
2954 if (rate->hw_value < IWL_RATE_COUNT)
2955 priv->active_rate |= (1 << rate->hw_value);
2956 }
2957
2958 IWL_DEBUG_RATE("Set active_rate = %0x, active_rate_basic = %0x\n",
2959 priv->active_rate, priv->active_rate_basic);
2960
2961 /*
2962 * If a basic rate is configured, then use it (adding IWL_RATE_1M_MASK)
2963 * otherwise set it to the default of all CCK rates and 6, 12, 24 for
2964 * OFDM
2965 */
2966 if (priv->active_rate_basic & IWL_CCK_BASIC_RATES_MASK)
2967 priv->staging_rxon.cck_basic_rates =
2968 ((priv->active_rate_basic &
2969 IWL_CCK_RATES_MASK) >> IWL_FIRST_CCK_RATE) & 0xF;
2970 else
2971 priv->staging_rxon.cck_basic_rates =
2972 (IWL_CCK_BASIC_RATES_MASK >> IWL_FIRST_CCK_RATE) & 0xF;
2973
2974 if (priv->active_rate_basic & IWL_OFDM_BASIC_RATES_MASK)
2975 priv->staging_rxon.ofdm_basic_rates =
2976 ((priv->active_rate_basic &
2977 (IWL_OFDM_BASIC_RATES_MASK | IWL_RATE_6M_MASK)) >>
2978 IWL_FIRST_OFDM_RATE) & 0xFF;
2979 else
2980 priv->staging_rxon.ofdm_basic_rates =
2981 (IWL_OFDM_BASIC_RATES_MASK >> IWL_FIRST_OFDM_RATE) & 0xFF;
2982 }
2983
2984 static void iwl4965_radio_kill_sw(struct iwl4965_priv *priv, int disable_radio)
2985 {
2986 unsigned long flags;
2987
2988 if (!!disable_radio == test_bit(STATUS_RF_KILL_SW, &priv->status))
2989 return;
2990
2991 IWL_DEBUG_RF_KILL("Manual SW RF KILL set to: RADIO %s\n",
2992 disable_radio ? "OFF" : "ON");
2993
2994 if (disable_radio) {
2995 iwl4965_scan_cancel(priv);
2996 /* FIXME: This is a workaround for AP */
2997 if (priv->iw_mode != IEEE80211_IF_TYPE_AP) {
2998 spin_lock_irqsave(&priv->lock, flags);
2999 iwl4965_write32(priv, CSR_UCODE_DRV_GP1_SET,
3000 CSR_UCODE_SW_BIT_RFKILL);
3001 spin_unlock_irqrestore(&priv->lock, flags);
3002 iwl4965_send_card_state(priv, CARD_STATE_CMD_DISABLE, 0);
3003 set_bit(STATUS_RF_KILL_SW, &priv->status);
3004 }
3005 return;
3006 }
3007
3008 spin_lock_irqsave(&priv->lock, flags);
3009 iwl4965_write32(priv, CSR_UCODE_DRV_GP1_CLR, CSR_UCODE_SW_BIT_RFKILL);
3010
3011 clear_bit(STATUS_RF_KILL_SW, &priv->status);
3012 spin_unlock_irqrestore(&priv->lock, flags);
3013
3014 /* wake up ucode */
3015 msleep(10);
3016
3017 spin_lock_irqsave(&priv->lock, flags);
3018 iwl4965_read32(priv, CSR_UCODE_DRV_GP1);
3019 if (!iwl4965_grab_nic_access(priv))
3020 iwl4965_release_nic_access(priv);
3021 spin_unlock_irqrestore(&priv->lock, flags);
3022
3023 if (test_bit(STATUS_RF_KILL_HW, &priv->status)) {
3024 IWL_DEBUG_RF_KILL("Can not turn radio back on - "
3025 "disabled by HW switch\n");
3026 return;
3027 }
3028
3029 queue_work(priv->workqueue, &priv->restart);
3030 return;
3031 }
3032
3033 void iwl4965_set_decrypted_flag(struct iwl4965_priv *priv, struct sk_buff *skb,
3034 u32 decrypt_res, struct ieee80211_rx_status *stats)
3035 {
3036 u16 fc =
3037 le16_to_cpu(((struct ieee80211_hdr *)skb->data)->frame_control);
3038
3039 if (priv->active_rxon.filter_flags & RXON_FILTER_DIS_DECRYPT_MSK)
3040 return;
3041
3042 if (!(fc & IEEE80211_FCTL_PROTECTED))
3043 return;
3044
3045 IWL_DEBUG_RX("decrypt_res:0x%x\n", decrypt_res);
3046 switch (decrypt_res & RX_RES_STATUS_SEC_TYPE_MSK) {
3047 case RX_RES_STATUS_SEC_TYPE_TKIP:
3048 if ((decrypt_res & RX_RES_STATUS_DECRYPT_TYPE_MSK) ==
3049 RX_RES_STATUS_BAD_ICV_MIC)
3050 stats->flag |= RX_FLAG_MMIC_ERROR;
3051 case RX_RES_STATUS_SEC_TYPE_WEP:
3052 case RX_RES_STATUS_SEC_TYPE_CCMP:
3053 if ((decrypt_res & RX_RES_STATUS_DECRYPT_TYPE_MSK) ==
3054 RX_RES_STATUS_DECRYPT_OK) {
3055 IWL_DEBUG_RX("hw decrypt successfully!!!\n");
3056 stats->flag |= RX_FLAG_DECRYPTED;
3057 }
3058 break;
3059
3060 default:
3061 break;
3062 }
3063 }
3064
3065
3066 #define IWL_PACKET_RETRY_TIME HZ
3067
3068 int iwl4965_is_duplicate_packet(struct iwl4965_priv *priv, struct ieee80211_hdr *header)
3069 {
3070 u16 sc = le16_to_cpu(header->seq_ctrl);
3071 u16 seq = (sc & IEEE80211_SCTL_SEQ) >> 4;
3072 u16 frag = sc & IEEE80211_SCTL_FRAG;
3073 u16 *last_seq, *last_frag;
3074 unsigned long *last_time;
3075
3076 switch (priv->iw_mode) {
3077 case IEEE80211_IF_TYPE_IBSS:{
3078 struct list_head *p;
3079 struct iwl4965_ibss_seq *entry = NULL;
3080 u8 *mac = header->addr2;
3081 int index = mac[5] & (IWL_IBSS_MAC_HASH_SIZE - 1);
3082
3083 __list_for_each(p, &priv->ibss_mac_hash[index]) {
3084 entry = list_entry(p, struct iwl4965_ibss_seq, list);
3085 if (!compare_ether_addr(entry->mac, mac))
3086 break;
3087 }
3088 if (p == &priv->ibss_mac_hash[index]) {
3089 entry = kzalloc(sizeof(*entry), GFP_ATOMIC);
3090 if (!entry) {
3091 IWL_ERROR("Cannot malloc new mac entry\n");
3092 return 0;
3093 }
3094 memcpy(entry->mac, mac, ETH_ALEN);
3095 entry->seq_num = seq;
3096 entry->frag_num = frag;
3097 entry->packet_time = jiffies;
3098 list_add(&entry->list, &priv->ibss_mac_hash[index]);
3099 return 0;
3100 }
3101 last_seq = &entry->seq_num;
3102 last_frag = &entry->frag_num;
3103 last_time = &entry->packet_time;
3104 break;
3105 }
3106 case IEEE80211_IF_TYPE_STA:
3107 last_seq = &priv->last_seq_num;
3108 last_frag = &priv->last_frag_num;
3109 last_time = &priv->last_packet_time;
3110 break;
3111 default:
3112 return 0;
3113 }
3114 if ((*last_seq == seq) &&
3115 time_after(*last_time + IWL_PACKET_RETRY_TIME, jiffies)) {
3116 if (*last_frag == frag)
3117 goto drop;
3118 if (*last_frag + 1 != frag)
3119 /* out-of-order fragment */
3120 goto drop;
3121 } else
3122 *last_seq = seq;
3123
3124 *last_frag = frag;
3125 *last_time = jiffies;
3126 return 0;
3127
3128 drop:
3129 return 1;
3130 }
3131
3132 #ifdef CONFIG_IWL4965_SPECTRUM_MEASUREMENT
3133
3134 #include "iwl-spectrum.h"
3135
3136 #define BEACON_TIME_MASK_LOW 0x00FFFFFF
3137 #define BEACON_TIME_MASK_HIGH 0xFF000000
3138 #define TIME_UNIT 1024
3139
3140 /*
3141 * extended beacon time format
3142 * time in usec will be changed into a 32-bit value in 8:24 format
3143 * the high 1 byte is the beacon counts
3144 * the lower 3 bytes is the time in usec within one beacon interval
3145 */
3146
3147 static u32 iwl4965_usecs_to_beacons(u32 usec, u32 beacon_interval)
3148 {
3149 u32 quot;
3150 u32 rem;
3151 u32 interval = beacon_interval * 1024;
3152
3153 if (!interval || !usec)
3154 return 0;
3155
3156 quot = (usec / interval) & (BEACON_TIME_MASK_HIGH >> 24);
3157 rem = (usec % interval) & BEACON_TIME_MASK_LOW;
3158
3159 return (quot << 24) + rem;
3160 }
3161
3162 /* base is usually what we get from ucode with each received frame,
3163 * the same as HW timer counter counting down
3164 */
3165
3166 static __le32 iwl4965_add_beacon_time(u32 base, u32 addon, u32 beacon_interval)
3167 {
3168 u32 base_low = base & BEACON_TIME_MASK_LOW;
3169 u32 addon_low = addon & BEACON_TIME_MASK_LOW;
3170 u32 interval = beacon_interval * TIME_UNIT;
3171 u32 res = (base & BEACON_TIME_MASK_HIGH) +
3172 (addon & BEACON_TIME_MASK_HIGH);
3173
3174 if (base_low > addon_low)
3175 res += base_low - addon_low;
3176 else if (base_low < addon_low) {
3177 res += interval + base_low - addon_low;
3178 res += (1 << 24);
3179 } else
3180 res += (1 << 24);
3181
3182 return cpu_to_le32(res);
3183 }
3184
3185 static int iwl4965_get_measurement(struct iwl4965_priv *priv,
3186 struct ieee80211_measurement_params *params,
3187 u8 type)
3188 {
3189 struct iwl4965_spectrum_cmd spectrum;
3190 struct iwl4965_rx_packet *res;
3191 struct iwl4965_host_cmd cmd = {
3192 .id = REPLY_SPECTRUM_MEASUREMENT_CMD,
3193 .data = (void *)&spectrum,
3194 .meta.flags = CMD_WANT_SKB,
3195 };
3196 u32 add_time = le64_to_cpu(params->start_time);
3197 int rc;
3198 int spectrum_resp_status;
3199 int duration = le16_to_cpu(params->duration);
3200
3201 if (iwl4965_is_associated(priv))
3202 add_time =
3203 iwl4965_usecs_to_beacons(
3204 le64_to_cpu(params->start_time) - priv->last_tsf,
3205 le16_to_cpu(priv->rxon_timing.beacon_interval));
3206
3207 memset(&spectrum, 0, sizeof(spectrum));
3208
3209 spectrum.channel_count = cpu_to_le16(1);
3210 spectrum.flags =
3211 RXON_FLG_TSF2HOST_MSK | RXON_FLG_ANT_A_MSK | RXON_FLG_DIS_DIV_MSK;
3212 spectrum.filter_flags = MEASUREMENT_FILTER_FLAG;
3213 cmd.len = sizeof(spectrum);
3214 spectrum.len = cpu_to_le16(cmd.len - sizeof(spectrum.len));
3215
3216 if (iwl4965_is_associated(priv))
3217 spectrum.start_time =
3218 iwl4965_add_beacon_time(priv->last_beacon_time,
3219 add_time,
3220 le16_to_cpu(priv->rxon_timing.beacon_interval));
3221 else
3222 spectrum.start_time = 0;
3223
3224 spectrum.channels[0].duration = cpu_to_le32(duration * TIME_UNIT);
3225 spectrum.channels[0].channel = params->channel;
3226 spectrum.channels[0].type = type;
3227 if (priv->active_rxon.flags & RXON_FLG_BAND_24G_MSK)
3228 spectrum.flags |= RXON_FLG_BAND_24G_MSK |
3229 RXON_FLG_AUTO_DETECT_MSK | RXON_FLG_TGG_PROTECT_MSK;
3230
3231 rc = iwl4965_send_cmd_sync(priv, &cmd);
3232 if (rc)
3233 return rc;
3234
3235 res = (struct iwl4965_rx_packet *)cmd.meta.u.skb->data;
3236 if (res->hdr.flags & IWL_CMD_FAILED_MSK) {
3237 IWL_ERROR("Bad return from REPLY_RX_ON_ASSOC command\n");
3238 rc = -EIO;
3239 }
3240
3241 spectrum_resp_status = le16_to_cpu(res->u.spectrum.status);
3242 switch (spectrum_resp_status) {
3243 case 0: /* Command will be handled */
3244 if (res->u.spectrum.id != 0xff) {
3245 IWL_DEBUG_INFO
3246 ("Replaced existing measurement: %d\n",
3247 res->u.spectrum.id);
3248 priv->measurement_status &= ~MEASUREMENT_READY;
3249 }
3250 priv->measurement_status |= MEASUREMENT_ACTIVE;
3251 rc = 0;
3252 break;
3253
3254 case 1: /* Command will not be handled */
3255 rc = -EAGAIN;
3256 break;
3257 }
3258
3259 dev_kfree_skb_any(cmd.meta.u.skb);
3260
3261 return rc;
3262 }
3263 #endif
3264
3265 static void iwl4965_txstatus_to_ieee(struct iwl4965_priv *priv,
3266 struct iwl4965_tx_info *tx_sta)
3267 {
3268
3269 tx_sta->status.ack_signal = 0;
3270 tx_sta->status.excessive_retries = 0;
3271 tx_sta->status.queue_length = 0;
3272 tx_sta->status.queue_number = 0;
3273
3274 if (in_interrupt())
3275 ieee80211_tx_status_irqsafe(priv->hw,
3276 tx_sta->skb[0], &(tx_sta->status));
3277 else
3278 ieee80211_tx_status(priv->hw,
3279 tx_sta->skb[0], &(tx_sta->status));
3280
3281 tx_sta->skb[0] = NULL;
3282 }
3283
3284 /**
3285 * iwl4965_tx_queue_reclaim - Reclaim Tx queue entries already Tx'd
3286 *
3287 * When FW advances 'R' index, all entries between old and new 'R' index
3288 * need to be reclaimed. As result, some free space forms. If there is
3289 * enough free space (> low mark), wake the stack that feeds us.
3290 */
3291 int iwl4965_tx_queue_reclaim(struct iwl4965_priv *priv, int txq_id, int index)
3292 {
3293 struct iwl4965_tx_queue *txq = &priv->txq[txq_id];
3294 struct iwl4965_queue *q = &txq->q;
3295 int nfreed = 0;
3296
3297 if ((index >= q->n_bd) || (x2_queue_used(q, index) == 0)) {
3298 IWL_ERROR("Read index for DMA queue txq id (%d), index %d, "
3299 "is out of range [0-%d] %d %d.\n", txq_id,
3300 index, q->n_bd, q->write_ptr, q->read_ptr);
3301 return 0;
3302 }
3303
3304 for (index = iwl4965_queue_inc_wrap(index, q->n_bd);
3305 q->read_ptr != index;
3306 q->read_ptr = iwl4965_queue_inc_wrap(q->read_ptr, q->n_bd)) {
3307 if (txq_id != IWL_CMD_QUEUE_NUM) {
3308 iwl4965_txstatus_to_ieee(priv,
3309 &(txq->txb[txq->q.read_ptr]));
3310 iwl4965_hw_txq_free_tfd(priv, txq);
3311 } else if (nfreed > 1) {
3312 IWL_ERROR("HCMD skipped: index (%d) %d %d\n", index,
3313 q->write_ptr, q->read_ptr);
3314 queue_work(priv->workqueue, &priv->restart);
3315 }
3316 nfreed++;
3317 }
3318
3319 /* if (iwl4965_queue_space(q) > q->low_mark && (txq_id >= 0) &&
3320 (txq_id != IWL_CMD_QUEUE_NUM) &&
3321 priv->mac80211_registered)
3322 ieee80211_wake_queue(priv->hw, txq_id); */
3323
3324
3325 return nfreed;
3326 }
3327
3328 static int iwl4965_is_tx_success(u32 status)
3329 {
3330 status &= TX_STATUS_MSK;
3331 return (status == TX_STATUS_SUCCESS)
3332 || (status == TX_STATUS_DIRECT_DONE);
3333 }
3334
3335 /******************************************************************************
3336 *
3337 * Generic RX handler implementations
3338 *
3339 ******************************************************************************/
3340 #ifdef CONFIG_IWL4965_HT
3341
3342 static inline int iwl4965_get_ra_sta_id(struct iwl4965_priv *priv,
3343 struct ieee80211_hdr *hdr)
3344 {
3345 if (priv->iw_mode == IEEE80211_IF_TYPE_STA)
3346 return IWL_AP_ID;
3347 else {
3348 u8 *da = ieee80211_get_DA(hdr);
3349 return iwl4965_hw_find_station(priv, da);
3350 }
3351 }
3352
3353 static struct ieee80211_hdr *iwl4965_tx_queue_get_hdr(
3354 struct iwl4965_priv *priv, int txq_id, int idx)
3355 {
3356 if (priv->txq[txq_id].txb[idx].skb[0])
3357 return (struct ieee80211_hdr *)priv->txq[txq_id].
3358 txb[idx].skb[0]->data;
3359 return NULL;
3360 }
3361
3362 static inline u32 iwl4965_get_scd_ssn(struct iwl4965_tx_resp *tx_resp)
3363 {
3364 __le32 *scd_ssn = (__le32 *)((u32 *)&tx_resp->status +
3365 tx_resp->frame_count);
3366 return le32_to_cpu(*scd_ssn) & MAX_SN;
3367
3368 }
3369
3370 /**
3371 * iwl4965_tx_status_reply_tx - Handle Tx rspnse for frames in aggregation queue
3372 */
3373 static int iwl4965_tx_status_reply_tx(struct iwl4965_priv *priv,
3374 struct iwl4965_ht_agg *agg,
3375 struct iwl4965_tx_resp_agg *tx_resp,
3376 u16 start_idx)
3377 {
3378 u16 status;
3379 struct agg_tx_status *frame_status = &tx_resp->status;
3380 struct ieee80211_tx_status *tx_status = NULL;
3381 struct ieee80211_hdr *hdr = NULL;
3382 int i, sh;
3383 int txq_id, idx;
3384 u16 seq;
3385
3386 if (agg->wait_for_ba)
3387 IWL_DEBUG_TX_REPLY("got tx response w/o block-ack\n");
3388
3389 agg->frame_count = tx_resp->frame_count;
3390 agg->start_idx = start_idx;
3391 agg->rate_n_flags = le32_to_cpu(tx_resp->rate_n_flags);
3392 agg->bitmap = 0;
3393
3394 /* # frames attempted by Tx command */
3395 if (agg->frame_count == 1) {
3396 /* Only one frame was attempted; no block-ack will arrive */
3397 status = le16_to_cpu(frame_status[0].status);
3398 seq = le16_to_cpu(frame_status[0].sequence);
3399 idx = SEQ_TO_INDEX(seq);
3400 txq_id = SEQ_TO_QUEUE(seq);
3401
3402 /* FIXME: code repetition */
3403 IWL_DEBUG_TX_REPLY("FrameCnt = %d, StartIdx=%d idx=%d\n",
3404 agg->frame_count, agg->start_idx, idx);
3405
3406 tx_status = &(priv->txq[txq_id].txb[idx].status);
3407 tx_status->retry_count = tx_resp->failure_frame;
3408 tx_status->queue_number = status & 0xff;
3409 tx_status->queue_length = tx_resp->failure_rts;
3410 tx_status->control.flags &= ~IEEE80211_TXCTL_AMPDU;
3411 tx_status->flags = iwl4965_is_tx_success(status)?
3412 IEEE80211_TX_STATUS_ACK : 0;
3413 /* FIXME Wrong Rate
3414 tx_status->control.tx_rate =
3415 iwl4965_hw_get_rate_n_flags(tx_resp->rate_n_flags); */
3416 /* FIXME: code repetition end */
3417
3418 IWL_DEBUG_TX_REPLY("1 Frame 0x%x failure :%d\n",
3419 status & 0xff, tx_resp->failure_frame);
3420 IWL_DEBUG_TX_REPLY("Rate Info rate_n_flags=%x\n",
3421 iwl4965_hw_get_rate_n_flags(tx_resp->rate_n_flags));
3422
3423 agg->wait_for_ba = 0;
3424 } else {
3425 /* Two or more frames were attempted; expect block-ack */
3426 u64 bitmap = 0;
3427 int start = agg->start_idx;
3428
3429 /* Construct bit-map of pending frames within Tx window */
3430 for (i = 0; i < agg->frame_count; i++) {
3431 u16 sc;
3432 status = le16_to_cpu(frame_status[i].status);
3433 seq = le16_to_cpu(frame_status[i].sequence);
3434 idx = SEQ_TO_INDEX(seq);
3435 txq_id = SEQ_TO_QUEUE(seq);
3436
3437 if (status & (AGG_TX_STATE_FEW_BYTES_MSK |
3438 AGG_TX_STATE_ABORT_MSK))
3439 continue;
3440
3441 IWL_DEBUG_TX_REPLY("FrameCnt = %d, txq_id=%d idx=%d\n",
3442 agg->frame_count, txq_id, idx);
3443
3444 hdr = iwl4965_tx_queue_get_hdr(priv, txq_id, idx);
3445
3446 sc = le16_to_cpu(hdr->seq_ctrl);
3447 if (idx != (SEQ_TO_SN(sc) & 0xff)) {
3448 IWL_ERROR("BUG_ON idx doesn't match seq control"
3449 " idx=%d, seq_idx=%d, seq=%d\n",
3450 idx, SEQ_TO_SN(sc),
3451 hdr->seq_ctrl);
3452 return -1;
3453 }
3454
3455 IWL_DEBUG_TX_REPLY("AGG Frame i=%d idx %d seq=%d\n",
3456 i, idx, SEQ_TO_SN(sc));
3457
3458 sh = idx - start;
3459 if (sh > 64) {
3460 sh = (start - idx) + 0xff;
3461 bitmap = bitmap << sh;
3462 sh = 0;
3463 start = idx;
3464 } else if (sh < -64)
3465 sh = 0xff - (start - idx);
3466 else if (sh < 0) {
3467 sh = start - idx;
3468 start = idx;
3469 bitmap = bitmap << sh;
3470 sh = 0;
3471 }
3472 bitmap |= (1 << sh);
3473 IWL_DEBUG_TX_REPLY("start=%d bitmap=0x%x\n",
3474 start, (u32)(bitmap & 0xFFFFFFFF));
3475 }
3476
3477 agg->bitmap = bitmap;
3478 agg->start_idx = start;
3479 agg->rate_n_flags = le32_to_cpu(tx_resp->rate_n_flags);
3480 IWL_DEBUG_TX_REPLY("Frames %d start_idx=%d bitmap=0x%llx\n",
3481 agg->frame_count, agg->start_idx,
3482 agg->bitmap);
3483
3484 if (bitmap)
3485 agg->wait_for_ba = 1;
3486 }
3487 return 0;
3488 }
3489 #endif
3490
3491 /**
3492 * iwl4965_rx_reply_tx - Handle standard (non-aggregation) Tx response
3493 */
3494 static void iwl4965_rx_reply_tx(struct iwl4965_priv *priv,
3495 struct iwl4965_rx_mem_buffer *rxb)
3496 {
3497 struct iwl4965_rx_packet *pkt = (void *)rxb->skb->data;
3498 u16 sequence = le16_to_cpu(pkt->hdr.sequence);
3499 int txq_id = SEQ_TO_QUEUE(sequence);
3500 int index = SEQ_TO_INDEX(sequence);
3501 struct iwl4965_tx_queue *txq = &priv->txq[txq_id];
3502 struct ieee80211_tx_status *tx_status;
3503 struct iwl4965_tx_resp *tx_resp = (void *)&pkt->u.raw[0];
3504 u32 status = le32_to_cpu(tx_resp->status);
3505 #ifdef CONFIG_IWL4965_HT
3506 int tid = MAX_TID_COUNT, sta_id = IWL_INVALID_STATION;
3507 struct ieee80211_hdr *hdr;
3508 __le16 *qc;
3509 #endif
3510
3511 if ((index >= txq->q.n_bd) || (x2_queue_used(&txq->q, index) == 0)) {
3512 IWL_ERROR("Read index for DMA queue txq_id (%d) index %d "
3513 "is out of range [0-%d] %d %d\n", txq_id,
3514 index, txq->q.n_bd, txq->q.write_ptr,
3515 txq->q.read_ptr);
3516 return;
3517 }
3518
3519 #ifdef CONFIG_IWL4965_HT
3520 hdr = iwl4965_tx_queue_get_hdr(priv, txq_id, index);
3521 qc = ieee80211_get_qos_ctrl(hdr);
3522
3523 if (qc)
3524 tid = le16_to_cpu(*qc) & 0xf;
3525
3526 sta_id = iwl4965_get_ra_sta_id(priv, hdr);
3527 if (txq->sched_retry && unlikely(sta_id == IWL_INVALID_STATION)) {
3528 IWL_ERROR("Station not known\n");
3529 return;
3530 }
3531
3532 if (txq->sched_retry) {
3533 const u32 scd_ssn = iwl4965_get_scd_ssn(tx_resp);
3534 struct iwl4965_ht_agg *agg = NULL;
3535
3536 if (!qc)
3537 return;
3538
3539 agg = &priv->stations[sta_id].tid[tid].agg;
3540
3541 iwl4965_tx_status_reply_tx(priv, agg,
3542 (struct iwl4965_tx_resp_agg *)tx_resp, index);
3543
3544 if ((tx_resp->frame_count == 1) &&
3545 !iwl4965_is_tx_success(status)) {
3546 /* TODO: send BAR */
3547 }
3548
3549 if (txq->q.read_ptr != (scd_ssn & 0xff)) {
3550 int freed;
3551 index = iwl4965_queue_dec_wrap(scd_ssn & 0xff, txq->q.n_bd);
3552 IWL_DEBUG_TX_REPLY("Retry scheduler reclaim scd_ssn "
3553 "%d index %d\n", scd_ssn , index);
3554 freed = iwl4965_tx_queue_reclaim(priv, txq_id, index);
3555 priv->stations[sta_id].tid[tid].tfds_in_queue -= freed;
3556
3557 if (iwl4965_queue_space(&txq->q) > txq->q.low_mark &&
3558 txq_id >= 0 && priv->mac80211_registered &&
3559 agg->state != IWL_EMPTYING_HW_QUEUE_DELBA)
3560 ieee80211_wake_queue(priv->hw, txq_id);
3561
3562 iwl4965_check_empty_hw_queue(priv, sta_id, tid, txq_id);
3563 }
3564 } else {
3565 #endif /* CONFIG_IWL4965_HT */
3566 tx_status = &(txq->txb[txq->q.read_ptr].status);
3567
3568 tx_status->retry_count = tx_resp->failure_frame;
3569 tx_status->queue_number = status;
3570 tx_status->queue_length = tx_resp->bt_kill_count;
3571 tx_status->queue_length |= tx_resp->failure_rts;
3572
3573 tx_status->flags =
3574 iwl4965_is_tx_success(status) ? IEEE80211_TX_STATUS_ACK : 0;
3575
3576 IWL_DEBUG_TX("Tx queue %d Status %s (0x%08x) rate_n_flags 0x%x "
3577 "retries %d\n", txq_id, iwl4965_get_tx_fail_reason(status),
3578 status, le32_to_cpu(tx_resp->rate_n_flags),
3579 tx_resp->failure_frame);
3580
3581 IWL_DEBUG_TX_REPLY("Tx queue reclaim %d\n", index);
3582 if (index != -1) {
3583 int freed = iwl4965_tx_queue_reclaim(priv, txq_id, index);
3584 #ifdef CONFIG_IWL4965_HT
3585 if (tid != MAX_TID_COUNT)
3586 priv->stations[sta_id].tid[tid].tfds_in_queue -= freed;
3587 if (iwl4965_queue_space(&txq->q) > txq->q.low_mark &&
3588 (txq_id >= 0) &&
3589 priv->mac80211_registered)
3590 ieee80211_wake_queue(priv->hw, txq_id);
3591 if (tid != MAX_TID_COUNT)
3592 iwl4965_check_empty_hw_queue(priv, sta_id, tid, txq_id);
3593 #endif
3594 }
3595 #ifdef CONFIG_IWL4965_HT
3596 }
3597 #endif /* CONFIG_IWL4965_HT */
3598
3599 if (iwl_check_bits(status, TX_ABORT_REQUIRED_MSK))
3600 IWL_ERROR("TODO: Implement Tx ABORT REQUIRED!!!\n");
3601 }
3602
3603
3604 static void iwl4965_rx_reply_alive(struct iwl4965_priv *priv,
3605 struct iwl4965_rx_mem_buffer *rxb)
3606 {
3607 struct iwl4965_rx_packet *pkt = (void *)rxb->skb->data;
3608 struct iwl4965_alive_resp *palive;
3609 struct delayed_work *pwork;
3610
3611 palive = &pkt->u.alive_frame;
3612
3613 IWL_DEBUG_INFO("Alive ucode status 0x%08X revision "
3614 "0x%01X 0x%01X\n",
3615 palive->is_valid, palive->ver_type,
3616 palive->ver_subtype);
3617
3618 if (palive->ver_subtype == INITIALIZE_SUBTYPE) {
3619 IWL_DEBUG_INFO("Initialization Alive received.\n");
3620 memcpy(&priv->card_alive_init,
3621 &pkt->u.alive_frame,
3622 sizeof(struct iwl4965_init_alive_resp));
3623 pwork = &priv->init_alive_start;
3624 } else {
3625 IWL_DEBUG_INFO("Runtime Alive received.\n");
3626 memcpy(&priv->card_alive, &pkt->u.alive_frame,
3627 sizeof(struct iwl4965_alive_resp));
3628 pwork = &priv->alive_start;
3629 }
3630
3631 /* We delay the ALIVE response by 5ms to
3632 * give the HW RF Kill time to activate... */
3633 if (palive->is_valid == UCODE_VALID_OK)
3634 queue_delayed_work(priv->workqueue, pwork,
3635 msecs_to_jiffies(5));
3636 else
3637 IWL_WARNING("uCode did not respond OK.\n");
3638 }
3639
3640 static void iwl4965_rx_reply_add_sta(struct iwl4965_priv *priv,
3641 struct iwl4965_rx_mem_buffer *rxb)
3642 {
3643 struct iwl4965_rx_packet *pkt = (void *)rxb->skb->data;
3644
3645 IWL_DEBUG_RX("Received REPLY_ADD_STA: 0x%02X\n", pkt->u.status);
3646 return;
3647 }
3648
3649 static void iwl4965_rx_reply_error(struct iwl4965_priv *priv,
3650 struct iwl4965_rx_mem_buffer *rxb)
3651 {
3652 struct iwl4965_rx_packet *pkt = (void *)rxb->skb->data;
3653
3654 IWL_ERROR("Error Reply type 0x%08X cmd %s (0x%02X) "
3655 "seq 0x%04X ser 0x%08X\n",
3656 le32_to_cpu(pkt->u.err_resp.error_type),
3657 get_cmd_string(pkt->u.err_resp.cmd_id),
3658 pkt->u.err_resp.cmd_id,
3659 le16_to_cpu(pkt->u.err_resp.bad_cmd_seq_num),
3660 le32_to_cpu(pkt->u.err_resp.error_info));
3661 }
3662
3663 #define TX_STATUS_ENTRY(x) case TX_STATUS_FAIL_ ## x: return #x
3664
3665 static void iwl4965_rx_csa(struct iwl4965_priv *priv, struct iwl4965_rx_mem_buffer *rxb)
3666 {
3667 struct iwl4965_rx_packet *pkt = (void *)rxb->skb->data;
3668 struct iwl4965_rxon_cmd *rxon = (void *)&priv->active_rxon;
3669 struct iwl4965_csa_notification *csa = &(pkt->u.csa_notif);
3670 IWL_DEBUG_11H("CSA notif: channel %d, status %d\n",
3671 le16_to_cpu(csa->channel), le32_to_cpu(csa->status));
3672 rxon->channel = csa->channel;
3673 priv->staging_rxon.channel = csa->channel;
3674 }
3675
3676 static void iwl4965_rx_spectrum_measure_notif(struct iwl4965_priv *priv,
3677 struct iwl4965_rx_mem_buffer *rxb)
3678 {
3679 #ifdef CONFIG_IWL4965_SPECTRUM_MEASUREMENT
3680 struct iwl4965_rx_packet *pkt = (void *)rxb->skb->data;
3681 struct iwl4965_spectrum_notification *report = &(pkt->u.spectrum_notif);
3682
3683 if (!report->state) {
3684 IWL_DEBUG(IWL_DL_11H | IWL_DL_INFO,
3685 "Spectrum Measure Notification: Start\n");
3686 return;
3687 }
3688
3689 memcpy(&priv->measure_report, report, sizeof(*report));
3690 priv->measurement_status |= MEASUREMENT_READY;
3691 #endif
3692 }
3693
3694 static void iwl4965_rx_pm_sleep_notif(struct iwl4965_priv *priv,
3695 struct iwl4965_rx_mem_buffer *rxb)
3696 {
3697 #ifdef CONFIG_IWL4965_DEBUG
3698 struct iwl4965_rx_packet *pkt = (void *)rxb->skb->data;
3699 struct iwl4965_sleep_notification *sleep = &(pkt->u.sleep_notif);
3700 IWL_DEBUG_RX("sleep mode: %d, src: %d\n",
3701 sleep->pm_sleep_mode, sleep->pm_wakeup_src);
3702 #endif
3703 }
3704
3705 static void iwl4965_rx_pm_debug_statistics_notif(struct iwl4965_priv *priv,
3706 struct iwl4965_rx_mem_buffer *rxb)
3707 {
3708 struct iwl4965_rx_packet *pkt = (void *)rxb->skb->data;
3709 IWL_DEBUG_RADIO("Dumping %d bytes of unhandled "
3710 "notification for %s:\n",
3711 le32_to_cpu(pkt->len), get_cmd_string(pkt->hdr.cmd));
3712 iwl4965_print_hex_dump(IWL_DL_RADIO, pkt->u.raw, le32_to_cpu(pkt->len));
3713 }
3714
3715 static void iwl4965_bg_beacon_update(struct work_struct *work)
3716 {
3717 struct iwl4965_priv *priv =
3718 container_of(work, struct iwl4965_priv, beacon_update);
3719 struct sk_buff *beacon;
3720
3721 /* Pull updated AP beacon from mac80211. will fail if not in AP mode */
3722 beacon = ieee80211_beacon_get(priv->hw, priv->vif, NULL);
3723
3724 if (!beacon) {
3725 IWL_ERROR("update beacon failed\n");
3726 return;
3727 }
3728
3729 mutex_lock(&priv->mutex);
3730 /* new beacon skb is allocated every time; dispose previous.*/
3731 if (priv->ibss_beacon)
3732 dev_kfree_skb(priv->ibss_beacon);
3733
3734 priv->ibss_beacon = beacon;
3735 mutex_unlock(&priv->mutex);
3736
3737 iwl4965_send_beacon_cmd(priv);
3738 }
3739
3740 static void iwl4965_rx_beacon_notif(struct iwl4965_priv *priv,
3741 struct iwl4965_rx_mem_buffer *rxb)
3742 {
3743 #ifdef CONFIG_IWL4965_DEBUG
3744 struct iwl4965_rx_packet *pkt = (void *)rxb->skb->data;
3745 struct iwl4965_beacon_notif *beacon = &(pkt->u.beacon_status);
3746 u8 rate = iwl4965_hw_get_rate(beacon->beacon_notify_hdr.rate_n_flags);
3747
3748 IWL_DEBUG_RX("beacon status %x retries %d iss %d "
3749 "tsf %d %d rate %d\n",
3750 le32_to_cpu(beacon->beacon_notify_hdr.status) & TX_STATUS_MSK,
3751 beacon->beacon_notify_hdr.failure_frame,
3752 le32_to_cpu(beacon->ibss_mgr_status),
3753 le32_to_cpu(beacon->high_tsf),
3754 le32_to_cpu(beacon->low_tsf), rate);
3755 #endif
3756
3757 if ((priv->iw_mode == IEEE80211_IF_TYPE_AP) &&
3758 (!test_bit(STATUS_EXIT_PENDING, &priv->status)))
3759 queue_work(priv->workqueue, &priv->beacon_update);
3760 }
3761
3762 /* Service response to REPLY_SCAN_CMD (0x80) */
3763 static void iwl4965_rx_reply_scan(struct iwl4965_priv *priv,
3764 struct iwl4965_rx_mem_buffer *rxb)
3765 {
3766 #ifdef CONFIG_IWL4965_DEBUG
3767 struct iwl4965_rx_packet *pkt = (void *)rxb->skb->data;
3768 struct iwl4965_scanreq_notification *notif =
3769 (struct iwl4965_scanreq_notification *)pkt->u.raw;
3770
3771 IWL_DEBUG_RX("Scan request status = 0x%x\n", notif->status);
3772 #endif
3773 }
3774
3775 /* Service SCAN_START_NOTIFICATION (0x82) */
3776 static void iwl4965_rx_scan_start_notif(struct iwl4965_priv *priv,
3777 struct iwl4965_rx_mem_buffer *rxb)
3778 {
3779 struct iwl4965_rx_packet *pkt = (void *)rxb->skb->data;
3780 struct iwl4965_scanstart_notification *notif =
3781 (struct iwl4965_scanstart_notification *)pkt->u.raw;
3782 priv->scan_start_tsf = le32_to_cpu(notif->tsf_low);
3783 IWL_DEBUG_SCAN("Scan start: "
3784 "%d [802.11%s] "
3785 "(TSF: 0x%08X:%08X) - %d (beacon timer %u)\n",
3786 notif->channel,
3787 notif->band ? "bg" : "a",
3788 notif->tsf_high,
3789 notif->tsf_low, notif->status, notif->beacon_timer);
3790 }
3791
3792 /* Service SCAN_RESULTS_NOTIFICATION (0x83) */
3793 static void iwl4965_rx_scan_results_notif(struct iwl4965_priv *priv,
3794 struct iwl4965_rx_mem_buffer *rxb)
3795 {
3796 struct iwl4965_rx_packet *pkt = (void *)rxb->skb->data;
3797 struct iwl4965_scanresults_notification *notif =
3798 (struct iwl4965_scanresults_notification *)pkt->u.raw;
3799
3800 IWL_DEBUG_SCAN("Scan ch.res: "
3801 "%d [802.11%s] "
3802 "(TSF: 0x%08X:%08X) - %d "
3803 "elapsed=%lu usec (%dms since last)\n",
3804 notif->channel,
3805 notif->band ? "bg" : "a",
3806 le32_to_cpu(notif->tsf_high),
3807 le32_to_cpu(notif->tsf_low),
3808 le32_to_cpu(notif->statistics[0]),
3809 le32_to_cpu(notif->tsf_low) - priv->scan_start_tsf,
3810 jiffies_to_msecs(elapsed_jiffies
3811 (priv->last_scan_jiffies, jiffies)));
3812
3813 priv->last_scan_jiffies = jiffies;
3814 priv->next_scan_jiffies = 0;
3815 }
3816
3817 /* Service SCAN_COMPLETE_NOTIFICATION (0x84) */
3818 static void iwl4965_rx_scan_complete_notif(struct iwl4965_priv *priv,
3819 struct iwl4965_rx_mem_buffer *rxb)
3820 {
3821 struct iwl4965_rx_packet *pkt = (void *)rxb->skb->data;
3822 struct iwl4965_scancomplete_notification *scan_notif = (void *)pkt->u.raw;
3823
3824 IWL_DEBUG_SCAN("Scan complete: %d channels (TSF 0x%08X:%08X) - %d\n",
3825 scan_notif->scanned_channels,
3826 scan_notif->tsf_low,
3827 scan_notif->tsf_high, scan_notif->status);
3828
3829 /* The HW is no longer scanning */
3830 clear_bit(STATUS_SCAN_HW, &priv->status);
3831
3832 /* The scan completion notification came in, so kill that timer... */
3833 cancel_delayed_work(&priv->scan_check);
3834
3835 IWL_DEBUG_INFO("Scan pass on %sGHz took %dms\n",
3836 (priv->scan_bands == 2) ? "2.4" : "5.2",
3837 jiffies_to_msecs(elapsed_jiffies
3838 (priv->scan_pass_start, jiffies)));
3839
3840 /* Remove this scanned band from the list
3841 * of pending bands to scan */
3842 priv->scan_bands--;
3843
3844 /* If a request to abort was given, or the scan did not succeed
3845 * then we reset the scan state machine and terminate,
3846 * re-queuing another scan if one has been requested */
3847 if (test_bit(STATUS_SCAN_ABORTING, &priv->status)) {
3848 IWL_DEBUG_INFO("Aborted scan completed.\n");
3849 clear_bit(STATUS_SCAN_ABORTING, &priv->status);
3850 } else {
3851 /* If there are more bands on this scan pass reschedule */
3852 if (priv->scan_bands > 0)
3853 goto reschedule;
3854 }
3855
3856 priv->last_scan_jiffies = jiffies;
3857 priv->next_scan_jiffies = 0;
3858 IWL_DEBUG_INFO("Setting scan to off\n");
3859
3860 clear_bit(STATUS_SCANNING, &priv->status);
3861
3862 IWL_DEBUG_INFO("Scan took %dms\n",
3863 jiffies_to_msecs(elapsed_jiffies(priv->scan_start, jiffies)));
3864
3865 queue_work(priv->workqueue, &priv->scan_completed);
3866
3867 return;
3868
3869 reschedule:
3870 priv->scan_pass_start = jiffies;
3871 queue_work(priv->workqueue, &priv->request_scan);
3872 }
3873
3874 /* Handle notification from uCode that card's power state is changing
3875 * due to software, hardware, or critical temperature RFKILL */
3876 static void iwl4965_rx_card_state_notif(struct iwl4965_priv *priv,
3877 struct iwl4965_rx_mem_buffer *rxb)
3878 {
3879 struct iwl4965_rx_packet *pkt = (void *)rxb->skb->data;
3880 u32 flags = le32_to_cpu(pkt->u.card_state_notif.flags);
3881 unsigned long status = priv->status;
3882
3883 IWL_DEBUG_RF_KILL("Card state received: HW:%s SW:%s\n",
3884 (flags & HW_CARD_DISABLED) ? "Kill" : "On",
3885 (flags & SW_CARD_DISABLED) ? "Kill" : "On");
3886
3887 if (flags & (SW_CARD_DISABLED | HW_CARD_DISABLED |
3888 RF_CARD_DISABLED)) {
3889
3890 iwl4965_write32(priv, CSR_UCODE_DRV_GP1_SET,
3891 CSR_UCODE_DRV_GP1_BIT_CMD_BLOCKED);
3892
3893 if (!iwl4965_grab_nic_access(priv)) {
3894 iwl4965_write_direct32(
3895 priv, HBUS_TARG_MBX_C,
3896 HBUS_TARG_MBX_C_REG_BIT_CMD_BLOCKED);
3897
3898 iwl4965_release_nic_access(priv);
3899 }
3900
3901 if (!(flags & RXON_CARD_DISABLED)) {
3902 iwl4965_write32(priv, CSR_UCODE_DRV_GP1_CLR,
3903 CSR_UCODE_DRV_GP1_BIT_CMD_BLOCKED);
3904 if (!iwl4965_grab_nic_access(priv)) {
3905 iwl4965_write_direct32(
3906 priv, HBUS_TARG_MBX_C,
3907 HBUS_TARG_MBX_C_REG_BIT_CMD_BLOCKED);
3908
3909 iwl4965_release_nic_access(priv);
3910 }
3911 }
3912
3913 if (flags & RF_CARD_DISABLED) {
3914 iwl4965_write32(priv, CSR_UCODE_DRV_GP1_SET,
3915 CSR_UCODE_DRV_GP1_REG_BIT_CT_KILL_EXIT);
3916 iwl4965_read32(priv, CSR_UCODE_DRV_GP1);
3917 if (!iwl4965_grab_nic_access(priv))
3918 iwl4965_release_nic_access(priv);
3919 }
3920 }
3921
3922 if (flags & HW_CARD_DISABLED)
3923 set_bit(STATUS_RF_KILL_HW, &priv->status);
3924 else
3925 clear_bit(STATUS_RF_KILL_HW, &priv->status);
3926
3927
3928 if (flags & SW_CARD_DISABLED)
3929 set_bit(STATUS_RF_KILL_SW, &priv->status);
3930 else
3931 clear_bit(STATUS_RF_KILL_SW, &priv->status);
3932
3933 if (!(flags & RXON_CARD_DISABLED))
3934 iwl4965_scan_cancel(priv);
3935
3936 if ((test_bit(STATUS_RF_KILL_HW, &status) !=
3937 test_bit(STATUS_RF_KILL_HW, &priv->status)) ||
3938 (test_bit(STATUS_RF_KILL_SW, &status) !=
3939 test_bit(STATUS_RF_KILL_SW, &priv->status)))
3940 queue_work(priv->workqueue, &priv->rf_kill);
3941 else
3942 wake_up_interruptible(&priv->wait_command_queue);
3943 }
3944
3945 /**
3946 * iwl4965_setup_rx_handlers - Initialize Rx handler callbacks
3947 *
3948 * Setup the RX handlers for each of the reply types sent from the uCode
3949 * to the host.
3950 *
3951 * This function chains into the hardware specific files for them to setup
3952 * any hardware specific handlers as well.
3953 */
3954 static void iwl4965_setup_rx_handlers(struct iwl4965_priv *priv)
3955 {
3956 priv->rx_handlers[REPLY_ALIVE] = iwl4965_rx_reply_alive;
3957 priv->rx_handlers[REPLY_ADD_STA] = iwl4965_rx_reply_add_sta;
3958 priv->rx_handlers[REPLY_ERROR] = iwl4965_rx_reply_error;
3959 priv->rx_handlers[CHANNEL_SWITCH_NOTIFICATION] = iwl4965_rx_csa;
3960 priv->rx_handlers[SPECTRUM_MEASURE_NOTIFICATION] =
3961 iwl4965_rx_spectrum_measure_notif;
3962 priv->rx_handlers[PM_SLEEP_NOTIFICATION] = iwl4965_rx_pm_sleep_notif;
3963 priv->rx_handlers[PM_DEBUG_STATISTIC_NOTIFIC] =
3964 iwl4965_rx_pm_debug_statistics_notif;
3965 priv->rx_handlers[BEACON_NOTIFICATION] = iwl4965_rx_beacon_notif;
3966
3967 /*
3968 * The same handler is used for both the REPLY to a discrete
3969 * statistics request from the host as well as for the periodic
3970 * statistics notifications (after received beacons) from the uCode.
3971 */
3972 priv->rx_handlers[REPLY_STATISTICS_CMD] = iwl4965_hw_rx_statistics;
3973 priv->rx_handlers[STATISTICS_NOTIFICATION] = iwl4965_hw_rx_statistics;
3974
3975 priv->rx_handlers[REPLY_SCAN_CMD] = iwl4965_rx_reply_scan;
3976 priv->rx_handlers[SCAN_START_NOTIFICATION] = iwl4965_rx_scan_start_notif;
3977 priv->rx_handlers[SCAN_RESULTS_NOTIFICATION] =
3978 iwl4965_rx_scan_results_notif;
3979 priv->rx_handlers[SCAN_COMPLETE_NOTIFICATION] =
3980 iwl4965_rx_scan_complete_notif;
3981 priv->rx_handlers[CARD_STATE_NOTIFICATION] = iwl4965_rx_card_state_notif;
3982 priv->rx_handlers[REPLY_TX] = iwl4965_rx_reply_tx;
3983
3984 /* Set up hardware specific Rx handlers */
3985 iwl4965_hw_rx_handler_setup(priv);
3986 }
3987
3988 /**
3989 * iwl4965_tx_cmd_complete - Pull unused buffers off the queue and reclaim them
3990 * @rxb: Rx buffer to reclaim
3991 *
3992 * If an Rx buffer has an async callback associated with it the callback
3993 * will be executed. The attached skb (if present) will only be freed
3994 * if the callback returns 1
3995 */
3996 static void iwl4965_tx_cmd_complete(struct iwl4965_priv *priv,
3997 struct iwl4965_rx_mem_buffer *rxb)
3998 {
3999 struct iwl4965_rx_packet *pkt = (struct iwl4965_rx_packet *)rxb->skb->data;
4000 u16 sequence = le16_to_cpu(pkt->hdr.sequence);
4001 int txq_id = SEQ_TO_QUEUE(sequence);
4002 int index = SEQ_TO_INDEX(sequence);
4003 int huge = sequence & SEQ_HUGE_FRAME;
4004 int cmd_index;
4005 struct iwl4965_cmd *cmd;
4006
4007 /* If a Tx command is being handled and it isn't in the actual
4008 * command queue then there a command routing bug has been introduced
4009 * in the queue management code. */
4010 if (txq_id != IWL_CMD_QUEUE_NUM)
4011 IWL_ERROR("Error wrong command queue %d command id 0x%X\n",
4012 txq_id, pkt->hdr.cmd);
4013 BUG_ON(txq_id != IWL_CMD_QUEUE_NUM);
4014
4015 cmd_index = get_cmd_index(&priv->txq[IWL_CMD_QUEUE_NUM].q, index, huge);
4016 cmd = &priv->txq[IWL_CMD_QUEUE_NUM].cmd[cmd_index];
4017
4018 /* Input error checking is done when commands are added to queue. */
4019 if (cmd->meta.flags & CMD_WANT_SKB) {
4020 cmd->meta.source->u.skb = rxb->skb;
4021 rxb->skb = NULL;
4022 } else if (cmd->meta.u.callback &&
4023 !cmd->meta.u.callback(priv, cmd, rxb->skb))
4024 rxb->skb = NULL;
4025
4026 iwl4965_tx_queue_reclaim(priv, txq_id, index);
4027
4028 if (!(cmd->meta.flags & CMD_ASYNC)) {
4029 clear_bit(STATUS_HCMD_ACTIVE, &priv->status);
4030 wake_up_interruptible(&priv->wait_command_queue);
4031 }
4032 }
4033
4034 /************************** RX-FUNCTIONS ****************************/
4035 /*
4036 * Rx theory of operation
4037 *
4038 * Driver allocates a circular buffer of Receive Buffer Descriptors (RBDs),
4039 * each of which point to Receive Buffers to be filled by 4965. These get
4040 * used not only for Rx frames, but for any command response or notification
4041 * from the 4965. The driver and 4965 manage the Rx buffers by means
4042 * of indexes into the circular buffer.
4043 *
4044 * Rx Queue Indexes
4045 * The host/firmware share two index registers for managing the Rx buffers.
4046 *
4047 * The READ index maps to the first position that the firmware may be writing
4048 * to -- the driver can read up to (but not including) this position and get
4049 * good data.
4050 * The READ index is managed by the firmware once the card is enabled.
4051 *
4052 * The WRITE index maps to the last position the driver has read from -- the
4053 * position preceding WRITE is the last slot the firmware can place a packet.
4054 *
4055 * The queue is empty (no good data) if WRITE = READ - 1, and is full if
4056 * WRITE = READ.
4057 *
4058 * During initialization, the host sets up the READ queue position to the first
4059 * INDEX position, and WRITE to the last (READ - 1 wrapped)
4060 *
4061 * When the firmware places a packet in a buffer, it will advance the READ index
4062 * and fire the RX interrupt. The driver can then query the READ index and
4063 * process as many packets as possible, moving the WRITE index forward as it
4064 * resets the Rx queue buffers with new memory.
4065 *
4066 * The management in the driver is as follows:
4067 * + A list of pre-allocated SKBs is stored in iwl->rxq->rx_free. When
4068 * iwl->rxq->free_count drops to or below RX_LOW_WATERMARK, work is scheduled
4069 * to replenish the iwl->rxq->rx_free.
4070 * + In iwl4965_rx_replenish (scheduled) if 'processed' != 'read' then the
4071 * iwl->rxq is replenished and the READ INDEX is updated (updating the
4072 * 'processed' and 'read' driver indexes as well)
4073 * + A received packet is processed and handed to the kernel network stack,
4074 * detached from the iwl->rxq. The driver 'processed' index is updated.
4075 * + The Host/Firmware iwl->rxq is replenished at tasklet time from the rx_free
4076 * list. If there are no allocated buffers in iwl->rxq->rx_free, the READ
4077 * INDEX is not incremented and iwl->status(RX_STALLED) is set. If there
4078 * were enough free buffers and RX_STALLED is set it is cleared.
4079 *
4080 *
4081 * Driver sequence:
4082 *
4083 * iwl4965_rx_queue_alloc() Allocates rx_free
4084 * iwl4965_rx_replenish() Replenishes rx_free list from rx_used, and calls
4085 * iwl4965_rx_queue_restock
4086 * iwl4965_rx_queue_restock() Moves available buffers from rx_free into Rx
4087 * queue, updates firmware pointers, and updates
4088 * the WRITE index. If insufficient rx_free buffers
4089 * are available, schedules iwl4965_rx_replenish
4090 *
4091 * -- enable interrupts --
4092 * ISR - iwl4965_rx() Detach iwl4965_rx_mem_buffers from pool up to the
4093 * READ INDEX, detaching the SKB from the pool.
4094 * Moves the packet buffer from queue to rx_used.
4095 * Calls iwl4965_rx_queue_restock to refill any empty
4096 * slots.
4097 * ...
4098 *
4099 */
4100
4101 /**
4102 * iwl4965_rx_queue_space - Return number of free slots available in queue.
4103 */
4104 static int iwl4965_rx_queue_space(const struct iwl4965_rx_queue *q)
4105 {
4106 int s = q->read - q->write;
4107 if (s <= 0)
4108 s += RX_QUEUE_SIZE;
4109 /* keep some buffer to not confuse full and empty queue */
4110 s -= 2;
4111 if (s < 0)
4112 s = 0;
4113 return s;
4114 }
4115
4116 /**
4117 * iwl4965_rx_queue_update_write_ptr - Update the write pointer for the RX queue
4118 */
4119 int iwl4965_rx_queue_update_write_ptr(struct iwl4965_priv *priv, struct iwl4965_rx_queue *q)
4120 {
4121 u32 reg = 0;
4122 int rc = 0;
4123 unsigned long flags;
4124
4125 spin_lock_irqsave(&q->lock, flags);
4126
4127 if (q->need_update == 0)
4128 goto exit_unlock;
4129
4130 /* If power-saving is in use, make sure device is awake */
4131 if (test_bit(STATUS_POWER_PMI, &priv->status)) {
4132 reg = iwl4965_read32(priv, CSR_UCODE_DRV_GP1);
4133
4134 if (reg & CSR_UCODE_DRV_GP1_BIT_MAC_SLEEP) {
4135 iwl4965_set_bit(priv, CSR_GP_CNTRL,
4136 CSR_GP_CNTRL_REG_FLAG_MAC_ACCESS_REQ);
4137 goto exit_unlock;
4138 }
4139
4140 rc = iwl4965_grab_nic_access(priv);
4141 if (rc)
4142 goto exit_unlock;
4143
4144 /* Device expects a multiple of 8 */
4145 iwl4965_write_direct32(priv, FH_RSCSR_CHNL0_WPTR,
4146 q->write & ~0x7);
4147 iwl4965_release_nic_access(priv);
4148
4149 /* Else device is assumed to be awake */
4150 } else
4151 /* Device expects a multiple of 8 */
4152 iwl4965_write32(priv, FH_RSCSR_CHNL0_WPTR, q->write & ~0x7);
4153
4154
4155 q->need_update = 0;
4156
4157 exit_unlock:
4158 spin_unlock_irqrestore(&q->lock, flags);
4159 return rc;
4160 }
4161
4162 /**
4163 * iwl4965_dma_addr2rbd_ptr - convert a DMA address to a uCode read buffer ptr
4164 */
4165 static inline __le32 iwl4965_dma_addr2rbd_ptr(struct iwl4965_priv *priv,
4166 dma_addr_t dma_addr)
4167 {
4168 return cpu_to_le32((u32)(dma_addr >> 8));
4169 }
4170
4171
4172 /**
4173 * iwl4965_rx_queue_restock - refill RX queue from pre-allocated pool
4174 *
4175 * If there are slots in the RX queue that need to be restocked,
4176 * and we have free pre-allocated buffers, fill the ranks as much
4177 * as we can, pulling from rx_free.
4178 *
4179 * This moves the 'write' index forward to catch up with 'processed', and
4180 * also updates the memory address in the firmware to reference the new
4181 * target buffer.
4182 */
4183 static int iwl4965_rx_queue_restock(struct iwl4965_priv *priv)
4184 {
4185 struct iwl4965_rx_queue *rxq = &priv->rxq;
4186 struct list_head *element;
4187 struct iwl4965_rx_mem_buffer *rxb;
4188 unsigned long flags;
4189 int write, rc;
4190
4191 spin_lock_irqsave(&rxq->lock, flags);
4192 write = rxq->write & ~0x7;
4193 while ((iwl4965_rx_queue_space(rxq) > 0) && (rxq->free_count)) {
4194 /* Get next free Rx buffer, remove from free list */
4195 element = rxq->rx_free.next;
4196 rxb = list_entry(element, struct iwl4965_rx_mem_buffer, list);
4197 list_del(element);
4198
4199 /* Point to Rx buffer via next RBD in circular buffer */
4200 rxq->bd[rxq->write] = iwl4965_dma_addr2rbd_ptr(priv, rxb->dma_addr);
4201 rxq->queue[rxq->write] = rxb;
4202 rxq->write = (rxq->write + 1) & RX_QUEUE_MASK;
4203 rxq->free_count--;
4204 }
4205 spin_unlock_irqrestore(&rxq->lock, flags);
4206 /* If the pre-allocated buffer pool is dropping low, schedule to
4207 * refill it */
4208 if (rxq->free_count <= RX_LOW_WATERMARK)
4209 queue_work(priv->workqueue, &priv->rx_replenish);
4210
4211
4212 /* If we've added more space for the firmware to place data, tell it.
4213 * Increment device's write pointer in multiples of 8. */
4214 if ((write != (rxq->write & ~0x7))
4215 || (abs(rxq->write - rxq->read) > 7)) {
4216 spin_lock_irqsave(&rxq->lock, flags);
4217 rxq->need_update = 1;
4218 spin_unlock_irqrestore(&rxq->lock, flags);
4219 rc = iwl4965_rx_queue_update_write_ptr(priv, rxq);
4220 if (rc)
4221 return rc;
4222 }
4223
4224 return 0;
4225 }
4226
4227 /**
4228 * iwl4965_rx_replenish - Move all used packet from rx_used to rx_free
4229 *
4230 * When moving to rx_free an SKB is allocated for the slot.
4231 *
4232 * Also restock the Rx queue via iwl4965_rx_queue_restock.
4233 * This is called as a scheduled work item (except for during initialization)
4234 */
4235 static void iwl4965_rx_allocate(struct iwl4965_priv *priv)
4236 {
4237 struct iwl4965_rx_queue *rxq = &priv->rxq;
4238 struct list_head *element;
4239 struct iwl4965_rx_mem_buffer *rxb;
4240 unsigned long flags;
4241 spin_lock_irqsave(&rxq->lock, flags);
4242 while (!list_empty(&rxq->rx_used)) {
4243 element = rxq->rx_used.next;
4244 rxb = list_entry(element, struct iwl4965_rx_mem_buffer, list);
4245
4246 /* Alloc a new receive buffer */
4247 rxb->skb =
4248 alloc_skb(priv->hw_setting.rx_buf_size,
4249 __GFP_NOWARN | GFP_ATOMIC);
4250 if (!rxb->skb) {
4251 if (net_ratelimit())
4252 printk(KERN_CRIT DRV_NAME
4253 ": Can not allocate SKB buffers\n");
4254 /* We don't reschedule replenish work here -- we will
4255 * call the restock method and if it still needs
4256 * more buffers it will schedule replenish */
4257 break;
4258 }
4259 priv->alloc_rxb_skb++;
4260 list_del(element);
4261
4262 /* Get physical address of RB/SKB */
4263 rxb->dma_addr =
4264 pci_map_single(priv->pci_dev, rxb->skb->data,
4265 priv->hw_setting.rx_buf_size, PCI_DMA_FROMDEVICE);
4266 list_add_tail(&rxb->list, &rxq->rx_free);
4267 rxq->free_count++;
4268 }
4269 spin_unlock_irqrestore(&rxq->lock, flags);
4270 }
4271
4272 /*
4273 * this should be called while priv->lock is locked
4274 */
4275 static void __iwl4965_rx_replenish(void *data)
4276 {
4277 struct iwl4965_priv *priv = data;
4278
4279 iwl4965_rx_allocate(priv);
4280 iwl4965_rx_queue_restock(priv);
4281 }
4282
4283
4284 void iwl4965_rx_replenish(void *data)
4285 {
4286 struct iwl4965_priv *priv = data;
4287 unsigned long flags;
4288
4289 iwl4965_rx_allocate(priv);
4290
4291 spin_lock_irqsave(&priv->lock, flags);
4292 iwl4965_rx_queue_restock(priv);
4293 spin_unlock_irqrestore(&priv->lock, flags);
4294 }
4295
4296 /* Assumes that the skb field of the buffers in 'pool' is kept accurate.
4297 * If an SKB has been detached, the POOL needs to have its SKB set to NULL
4298 * This free routine walks the list of POOL entries and if SKB is set to
4299 * non NULL it is unmapped and freed
4300 */
4301 static void iwl4965_rx_queue_free(struct iwl4965_priv *priv, struct iwl4965_rx_queue *rxq)
4302 {
4303 int i;
4304 for (i = 0; i < RX_QUEUE_SIZE + RX_FREE_BUFFERS; i++) {
4305 if (rxq->pool[i].skb != NULL) {
4306 pci_unmap_single(priv->pci_dev,
4307 rxq->pool[i].dma_addr,
4308 priv->hw_setting.rx_buf_size,
4309 PCI_DMA_FROMDEVICE);
4310 dev_kfree_skb(rxq->pool[i].skb);
4311 }
4312 }
4313
4314 pci_free_consistent(priv->pci_dev, 4 * RX_QUEUE_SIZE, rxq->bd,
4315 rxq->dma_addr);
4316 rxq->bd = NULL;
4317 }
4318
4319 int iwl4965_rx_queue_alloc(struct iwl4965_priv *priv)
4320 {
4321 struct iwl4965_rx_queue *rxq = &priv->rxq;
4322 struct pci_dev *dev = priv->pci_dev;
4323 int i;
4324
4325 spin_lock_init(&rxq->lock);
4326 INIT_LIST_HEAD(&rxq->rx_free);
4327 INIT_LIST_HEAD(&rxq->rx_used);
4328
4329 /* Alloc the circular buffer of Read Buffer Descriptors (RBDs) */
4330 rxq->bd = pci_alloc_consistent(dev, 4 * RX_QUEUE_SIZE, &rxq->dma_addr);
4331 if (!rxq->bd)
4332 return -ENOMEM;
4333
4334 /* Fill the rx_used queue with _all_ of the Rx buffers */
4335 for (i = 0; i < RX_FREE_BUFFERS + RX_QUEUE_SIZE; i++)
4336 list_add_tail(&rxq->pool[i].list, &rxq->rx_used);
4337
4338 /* Set us so that we have processed and used all buffers, but have
4339 * not restocked the Rx queue with fresh buffers */
4340 rxq->read = rxq->write = 0;
4341 rxq->free_count = 0;
4342 rxq->need_update = 0;
4343 return 0;
4344 }
4345
4346 void iwl4965_rx_queue_reset(struct iwl4965_priv *priv, struct iwl4965_rx_queue *rxq)
4347 {
4348 unsigned long flags;
4349 int i;
4350 spin_lock_irqsave(&rxq->lock, flags);
4351 INIT_LIST_HEAD(&rxq->rx_free);
4352 INIT_LIST_HEAD(&rxq->rx_used);
4353 /* Fill the rx_used queue with _all_ of the Rx buffers */
4354 for (i = 0; i < RX_FREE_BUFFERS + RX_QUEUE_SIZE; i++) {
4355 /* In the reset function, these buffers may have been allocated
4356 * to an SKB, so we need to unmap and free potential storage */
4357 if (rxq->pool[i].skb != NULL) {
4358 pci_unmap_single(priv->pci_dev,
4359 rxq->pool[i].dma_addr,
4360 priv->hw_setting.rx_buf_size,
4361 PCI_DMA_FROMDEVICE);
4362 priv->alloc_rxb_skb--;
4363 dev_kfree_skb(rxq->pool[i].skb);
4364 rxq->pool[i].skb = NULL;
4365 }
4366 list_add_tail(&rxq->pool[i].list, &rxq->rx_used);
4367 }
4368
4369 /* Set us so that we have processed and used all buffers, but have
4370 * not restocked the Rx queue with fresh buffers */
4371 rxq->read = rxq->write = 0;
4372 rxq->free_count = 0;
4373 spin_unlock_irqrestore(&rxq->lock, flags);
4374 }
4375
4376 /* Convert linear signal-to-noise ratio into dB */
4377 static u8 ratio2dB[100] = {
4378 /* 0 1 2 3 4 5 6 7 8 9 */
4379 0, 0, 6, 10, 12, 14, 16, 17, 18, 19, /* 00 - 09 */
4380 20, 21, 22, 22, 23, 23, 24, 25, 26, 26, /* 10 - 19 */
4381 26, 26, 26, 27, 27, 28, 28, 28, 29, 29, /* 20 - 29 */
4382 29, 30, 30, 30, 31, 31, 31, 31, 32, 32, /* 30 - 39 */
4383 32, 32, 32, 33, 33, 33, 33, 33, 34, 34, /* 40 - 49 */
4384 34, 34, 34, 34, 35, 35, 35, 35, 35, 35, /* 50 - 59 */
4385 36, 36, 36, 36, 36, 36, 36, 37, 37, 37, /* 60 - 69 */
4386 37, 37, 37, 37, 37, 38, 38, 38, 38, 38, /* 70 - 79 */
4387 38, 38, 38, 38, 38, 39, 39, 39, 39, 39, /* 80 - 89 */
4388 39, 39, 39, 39, 39, 40, 40, 40, 40, 40 /* 90 - 99 */
4389 };
4390
4391 /* Calculates a relative dB value from a ratio of linear
4392 * (i.e. not dB) signal levels.
4393 * Conversion assumes that levels are voltages (20*log), not powers (10*log). */
4394 int iwl4965_calc_db_from_ratio(int sig_ratio)
4395 {
4396 /* 1000:1 or higher just report as 60 dB */
4397 if (sig_ratio >= 1000)
4398 return 60;
4399
4400 /* 100:1 or higher, divide by 10 and use table,
4401 * add 20 dB to make up for divide by 10 */
4402 if (sig_ratio >= 100)
4403 return (20 + (int)ratio2dB[sig_ratio/10]);
4404
4405 /* We shouldn't see this */
4406 if (sig_ratio < 1)
4407 return 0;
4408
4409 /* Use table for ratios 1:1 - 99:1 */
4410 return (int)ratio2dB[sig_ratio];
4411 }
4412
4413 #define PERFECT_RSSI (-20) /* dBm */
4414 #define WORST_RSSI (-95) /* dBm */
4415 #define RSSI_RANGE (PERFECT_RSSI - WORST_RSSI)
4416
4417 /* Calculate an indication of rx signal quality (a percentage, not dBm!).
4418 * See http://www.ces.clemson.edu/linux/signal_quality.shtml for info
4419 * about formulas used below. */
4420 int iwl4965_calc_sig_qual(int rssi_dbm, int noise_dbm)
4421 {
4422 int sig_qual;
4423 int degradation = PERFECT_RSSI - rssi_dbm;
4424
4425 /* If we get a noise measurement, use signal-to-noise ratio (SNR)
4426 * as indicator; formula is (signal dbm - noise dbm).
4427 * SNR at or above 40 is a great signal (100%).
4428 * Below that, scale to fit SNR of 0 - 40 dB within 0 - 100% indicator.
4429 * Weakest usable signal is usually 10 - 15 dB SNR. */
4430 if (noise_dbm) {
4431 if (rssi_dbm - noise_dbm >= 40)
4432 return 100;
4433 else if (rssi_dbm < noise_dbm)
4434 return 0;
4435 sig_qual = ((rssi_dbm - noise_dbm) * 5) / 2;
4436
4437 /* Else use just the signal level.
4438 * This formula is a least squares fit of data points collected and
4439 * compared with a reference system that had a percentage (%) display
4440 * for signal quality. */
4441 } else
4442 sig_qual = (100 * (RSSI_RANGE * RSSI_RANGE) - degradation *
4443 (15 * RSSI_RANGE + 62 * degradation)) /
4444 (RSSI_RANGE * RSSI_RANGE);
4445
4446 if (sig_qual > 100)
4447 sig_qual = 100;
4448 else if (sig_qual < 1)
4449 sig_qual = 0;
4450
4451 return sig_qual;
4452 }
4453
4454 /**
4455 * iwl4965_rx_handle - Main entry function for receiving responses from uCode
4456 *
4457 * Uses the priv->rx_handlers callback function array to invoke
4458 * the appropriate handlers, including command responses,
4459 * frame-received notifications, and other notifications.
4460 */
4461 static void iwl4965_rx_handle(struct iwl4965_priv *priv)
4462 {
4463 struct iwl4965_rx_mem_buffer *rxb;
4464 struct iwl4965_rx_packet *pkt;
4465 struct iwl4965_rx_queue *rxq = &priv->rxq;
4466 u32 r, i;
4467 int reclaim;
4468 unsigned long flags;
4469 u8 fill_rx = 0;
4470 u32 count = 8;
4471
4472 /* uCode's read index (stored in shared DRAM) indicates the last Rx
4473 * buffer that the driver may process (last buffer filled by ucode). */
4474 r = iwl4965_hw_get_rx_read(priv);
4475 i = rxq->read;
4476
4477 /* Rx interrupt, but nothing sent from uCode */
4478 if (i == r)
4479 IWL_DEBUG(IWL_DL_RX | IWL_DL_ISR, "r = %d, i = %d\n", r, i);
4480
4481 if (iwl4965_rx_queue_space(rxq) > (RX_QUEUE_SIZE / 2))
4482 fill_rx = 1;
4483
4484 while (i != r) {
4485 rxb = rxq->queue[i];
4486
4487 /* If an RXB doesn't have a Rx queue slot associated with it,
4488 * then a bug has been introduced in the queue refilling
4489 * routines -- catch it here */
4490 BUG_ON(rxb == NULL);
4491
4492 rxq->queue[i] = NULL;
4493
4494 pci_dma_sync_single_for_cpu(priv->pci_dev, rxb->dma_addr,
4495 priv->hw_setting.rx_buf_size,
4496 PCI_DMA_FROMDEVICE);
4497 pkt = (struct iwl4965_rx_packet *)rxb->skb->data;
4498
4499 /* Reclaim a command buffer only if this packet is a response
4500 * to a (driver-originated) command.
4501 * If the packet (e.g. Rx frame) originated from uCode,
4502 * there is no command buffer to reclaim.
4503 * Ucode should set SEQ_RX_FRAME bit if ucode-originated,
4504 * but apparently a few don't get set; catch them here. */
4505 reclaim = !(pkt->hdr.sequence & SEQ_RX_FRAME) &&
4506 (pkt->hdr.cmd != REPLY_RX_PHY_CMD) &&
4507 (pkt->hdr.cmd != REPLY_4965_RX) &&
4508 (pkt->hdr.cmd != REPLY_COMPRESSED_BA) &&
4509 (pkt->hdr.cmd != STATISTICS_NOTIFICATION) &&
4510 (pkt->hdr.cmd != REPLY_TX);
4511
4512 /* Based on type of command response or notification,
4513 * handle those that need handling via function in
4514 * rx_handlers table. See iwl4965_setup_rx_handlers() */
4515 if (priv->rx_handlers[pkt->hdr.cmd]) {
4516 IWL_DEBUG(IWL_DL_HOST_COMMAND | IWL_DL_RX | IWL_DL_ISR,
4517 "r = %d, i = %d, %s, 0x%02x\n", r, i,
4518 get_cmd_string(pkt->hdr.cmd), pkt->hdr.cmd);
4519 priv->rx_handlers[pkt->hdr.cmd] (priv, rxb);
4520 } else {
4521 /* No handling needed */
4522 IWL_DEBUG(IWL_DL_HOST_COMMAND | IWL_DL_RX | IWL_DL_ISR,
4523 "r %d i %d No handler needed for %s, 0x%02x\n",
4524 r, i, get_cmd_string(pkt->hdr.cmd),
4525 pkt->hdr.cmd);
4526 }
4527
4528 if (reclaim) {
4529 /* Invoke any callbacks, transfer the skb to caller, and
4530 * fire off the (possibly) blocking iwl4965_send_cmd()
4531 * as we reclaim the driver command queue */
4532 if (rxb && rxb->skb)
4533 iwl4965_tx_cmd_complete(priv, rxb);
4534 else
4535 IWL_WARNING("Claim null rxb?\n");
4536 }
4537
4538 /* For now we just don't re-use anything. We can tweak this
4539 * later to try and re-use notification packets and SKBs that
4540 * fail to Rx correctly */
4541 if (rxb->skb != NULL) {
4542 priv->alloc_rxb_skb--;
4543 dev_kfree_skb_any(rxb->skb);
4544 rxb->skb = NULL;
4545 }
4546
4547 pci_unmap_single(priv->pci_dev, rxb->dma_addr,
4548 priv->hw_setting.rx_buf_size,
4549 PCI_DMA_FROMDEVICE);
4550 spin_lock_irqsave(&rxq->lock, flags);
4551 list_add_tail(&rxb->list, &priv->rxq.rx_used);
4552 spin_unlock_irqrestore(&rxq->lock, flags);
4553 i = (i + 1) & RX_QUEUE_MASK;
4554 /* If there are a lot of unused frames,
4555 * restock the Rx queue so ucode wont assert. */
4556 if (fill_rx) {
4557 count++;
4558 if (count >= 8) {
4559 priv->rxq.read = i;
4560 __iwl4965_rx_replenish(priv);
4561 count = 0;
4562 }
4563 }
4564 }
4565
4566 /* Backtrack one entry */
4567 priv->rxq.read = i;
4568 iwl4965_rx_queue_restock(priv);
4569 }
4570
4571 /**
4572 * iwl4965_tx_queue_update_write_ptr - Send new write index to hardware
4573 */
4574 static int iwl4965_tx_queue_update_write_ptr(struct iwl4965_priv *priv,
4575 struct iwl4965_tx_queue *txq)
4576 {
4577 u32 reg = 0;
4578 int rc = 0;
4579 int txq_id = txq->q.id;
4580
4581 if (txq->need_update == 0)
4582 return rc;
4583
4584 /* if we're trying to save power */
4585 if (test_bit(STATUS_POWER_PMI, &priv->status)) {
4586 /* wake up nic if it's powered down ...
4587 * uCode will wake up, and interrupt us again, so next
4588 * time we'll skip this part. */
4589 reg = iwl4965_read32(priv, CSR_UCODE_DRV_GP1);
4590
4591 if (reg & CSR_UCODE_DRV_GP1_BIT_MAC_SLEEP) {
4592 IWL_DEBUG_INFO("Requesting wakeup, GP1 = 0x%x\n", reg);
4593 iwl4965_set_bit(priv, CSR_GP_CNTRL,
4594 CSR_GP_CNTRL_REG_FLAG_MAC_ACCESS_REQ);
4595 return rc;
4596 }
4597
4598 /* restore this queue's parameters in nic hardware. */
4599 rc = iwl4965_grab_nic_access(priv);
4600 if (rc)
4601 return rc;
4602 iwl4965_write_direct32(priv, HBUS_TARG_WRPTR,
4603 txq->q.write_ptr | (txq_id << 8));
4604 iwl4965_release_nic_access(priv);
4605
4606 /* else not in power-save mode, uCode will never sleep when we're
4607 * trying to tx (during RFKILL, we're not trying to tx). */
4608 } else
4609 iwl4965_write32(priv, HBUS_TARG_WRPTR,
4610 txq->q.write_ptr | (txq_id << 8));
4611
4612 txq->need_update = 0;
4613
4614 return rc;
4615 }
4616
4617 #ifdef CONFIG_IWL4965_DEBUG
4618 static void iwl4965_print_rx_config_cmd(struct iwl4965_rxon_cmd *rxon)
4619 {
4620 DECLARE_MAC_BUF(mac);
4621
4622 IWL_DEBUG_RADIO("RX CONFIG:\n");
4623 iwl4965_print_hex_dump(IWL_DL_RADIO, (u8 *) rxon, sizeof(*rxon));
4624 IWL_DEBUG_RADIO("u16 channel: 0x%x\n", le16_to_cpu(rxon->channel));
4625 IWL_DEBUG_RADIO("u32 flags: 0x%08X\n", le32_to_cpu(rxon->flags));
4626 IWL_DEBUG_RADIO("u32 filter_flags: 0x%08x\n",
4627 le32_to_cpu(rxon->filter_flags));
4628 IWL_DEBUG_RADIO("u8 dev_type: 0x%x\n", rxon->dev_type);
4629 IWL_DEBUG_RADIO("u8 ofdm_basic_rates: 0x%02x\n",
4630 rxon->ofdm_basic_rates);
4631 IWL_DEBUG_RADIO("u8 cck_basic_rates: 0x%02x\n", rxon->cck_basic_rates);
4632 IWL_DEBUG_RADIO("u8[6] node_addr: %s\n",
4633 print_mac(mac, rxon->node_addr));
4634 IWL_DEBUG_RADIO("u8[6] bssid_addr: %s\n",
4635 print_mac(mac, rxon->bssid_addr));
4636 IWL_DEBUG_RADIO("u16 assoc_id: 0x%x\n", le16_to_cpu(rxon->assoc_id));
4637 }
4638 #endif
4639
4640 static void iwl4965_enable_interrupts(struct iwl4965_priv *priv)
4641 {
4642 IWL_DEBUG_ISR("Enabling interrupts\n");
4643 set_bit(STATUS_INT_ENABLED, &priv->status);
4644 iwl4965_write32(priv, CSR_INT_MASK, CSR_INI_SET_MASK);
4645 }
4646
4647 static inline void iwl4965_disable_interrupts(struct iwl4965_priv *priv)
4648 {
4649 clear_bit(STATUS_INT_ENABLED, &priv->status);
4650
4651 /* disable interrupts from uCode/NIC to host */
4652 iwl4965_write32(priv, CSR_INT_MASK, 0x00000000);
4653
4654 /* acknowledge/clear/reset any interrupts still pending
4655 * from uCode or flow handler (Rx/Tx DMA) */
4656 iwl4965_write32(priv, CSR_INT, 0xffffffff);
4657 iwl4965_write32(priv, CSR_FH_INT_STATUS, 0xffffffff);
4658 IWL_DEBUG_ISR("Disabled interrupts\n");
4659 }
4660
4661 static const char *desc_lookup(int i)
4662 {
4663 switch (i) {
4664 case 1:
4665 return "FAIL";
4666 case 2:
4667 return "BAD_PARAM";
4668 case 3:
4669 return "BAD_CHECKSUM";
4670 case 4:
4671 return "NMI_INTERRUPT";
4672 case 5:
4673 return "SYSASSERT";
4674 case 6:
4675 return "FATAL_ERROR";
4676 }
4677
4678 return "UNKNOWN";
4679 }
4680
4681 #define ERROR_START_OFFSET (1 * sizeof(u32))
4682 #define ERROR_ELEM_SIZE (7 * sizeof(u32))
4683
4684 static void iwl4965_dump_nic_error_log(struct iwl4965_priv *priv)
4685 {
4686 u32 data2, line;
4687 u32 desc, time, count, base, data1;
4688 u32 blink1, blink2, ilink1, ilink2;
4689 int rc;
4690
4691 base = le32_to_cpu(priv->card_alive.error_event_table_ptr);
4692
4693 if (!iwl4965_hw_valid_rtc_data_addr(base)) {
4694 IWL_ERROR("Not valid error log pointer 0x%08X\n", base);
4695 return;
4696 }
4697
4698 rc = iwl4965_grab_nic_access(priv);
4699 if (rc) {
4700 IWL_WARNING("Can not read from adapter at this time.\n");
4701 return;
4702 }
4703
4704 count = iwl4965_read_targ_mem(priv, base);
4705
4706 if (ERROR_START_OFFSET <= count * ERROR_ELEM_SIZE) {
4707 IWL_ERROR("Start IWL Error Log Dump:\n");
4708 IWL_ERROR("Status: 0x%08lX, count: %d\n", priv->status, count);
4709 }
4710
4711 desc = iwl4965_read_targ_mem(priv, base + 1 * sizeof(u32));
4712 blink1 = iwl4965_read_targ_mem(priv, base + 3 * sizeof(u32));
4713 blink2 = iwl4965_read_targ_mem(priv, base + 4 * sizeof(u32));
4714 ilink1 = iwl4965_read_targ_mem(priv, base + 5 * sizeof(u32));
4715 ilink2 = iwl4965_read_targ_mem(priv, base + 6 * sizeof(u32));
4716 data1 = iwl4965_read_targ_mem(priv, base + 7 * sizeof(u32));
4717 data2 = iwl4965_read_targ_mem(priv, base + 8 * sizeof(u32));
4718 line = iwl4965_read_targ_mem(priv, base + 9 * sizeof(u32));
4719 time = iwl4965_read_targ_mem(priv, base + 11 * sizeof(u32));
4720
4721 IWL_ERROR("Desc Time "
4722 "data1 data2 line\n");
4723 IWL_ERROR("%-13s (#%d) %010u 0x%08X 0x%08X %u\n",
4724 desc_lookup(desc), desc, time, data1, data2, line);
4725 IWL_ERROR("blink1 blink2 ilink1 ilink2\n");
4726 IWL_ERROR("0x%05X 0x%05X 0x%05X 0x%05X\n", blink1, blink2,
4727 ilink1, ilink2);
4728
4729 iwl4965_release_nic_access(priv);
4730 }
4731
4732 #define EVENT_START_OFFSET (4 * sizeof(u32))
4733
4734 /**
4735 * iwl4965_print_event_log - Dump error event log to syslog
4736 *
4737 * NOTE: Must be called with iwl4965_grab_nic_access() already obtained!
4738 */
4739 static void iwl4965_print_event_log(struct iwl4965_priv *priv, u32 start_idx,
4740 u32 num_events, u32 mode)
4741 {
4742 u32 i;
4743 u32 base; /* SRAM byte address of event log header */
4744 u32 event_size; /* 2 u32s, or 3 u32s if timestamp recorded */
4745 u32 ptr; /* SRAM byte address of log data */
4746 u32 ev, time, data; /* event log data */
4747
4748 if (num_events == 0)
4749 return;
4750
4751 base = le32_to_cpu(priv->card_alive.log_event_table_ptr);
4752
4753 if (mode == 0)
4754 event_size = 2 * sizeof(u32);
4755 else
4756 event_size = 3 * sizeof(u32);
4757
4758 ptr = base + EVENT_START_OFFSET + (start_idx * event_size);
4759
4760 /* "time" is actually "data" for mode 0 (no timestamp).
4761 * place event id # at far right for easier visual parsing. */
4762 for (i = 0; i < num_events; i++) {
4763 ev = iwl4965_read_targ_mem(priv, ptr);
4764 ptr += sizeof(u32);
4765 time = iwl4965_read_targ_mem(priv, ptr);
4766 ptr += sizeof(u32);
4767 if (mode == 0)
4768 IWL_ERROR("0x%08x\t%04u\n", time, ev); /* data, ev */
4769 else {
4770 data = iwl4965_read_targ_mem(priv, ptr);
4771 ptr += sizeof(u32);
4772 IWL_ERROR("%010u\t0x%08x\t%04u\n", time, data, ev);
4773 }
4774 }
4775 }
4776
4777 static void iwl4965_dump_nic_event_log(struct iwl4965_priv *priv)
4778 {
4779 int rc;
4780 u32 base; /* SRAM byte address of event log header */
4781 u32 capacity; /* event log capacity in # entries */
4782 u32 mode; /* 0 - no timestamp, 1 - timestamp recorded */
4783 u32 num_wraps; /* # times uCode wrapped to top of log */
4784 u32 next_entry; /* index of next entry to be written by uCode */
4785 u32 size; /* # entries that we'll print */
4786
4787 base = le32_to_cpu(priv->card_alive.log_event_table_ptr);
4788 if (!iwl4965_hw_valid_rtc_data_addr(base)) {
4789 IWL_ERROR("Invalid event log pointer 0x%08X\n", base);
4790 return;
4791 }
4792
4793 rc = iwl4965_grab_nic_access(priv);
4794 if (rc) {
4795 IWL_WARNING("Can not read from adapter at this time.\n");
4796 return;
4797 }
4798
4799 /* event log header */
4800 capacity = iwl4965_read_targ_mem(priv, base);
4801 mode = iwl4965_read_targ_mem(priv, base + (1 * sizeof(u32)));
4802 num_wraps = iwl4965_read_targ_mem(priv, base + (2 * sizeof(u32)));
4803 next_entry = iwl4965_read_targ_mem(priv, base + (3 * sizeof(u32)));
4804
4805 size = num_wraps ? capacity : next_entry;
4806
4807 /* bail out if nothing in log */
4808 if (size == 0) {
4809 IWL_ERROR("Start IWL Event Log Dump: nothing in log\n");
4810 iwl4965_release_nic_access(priv);
4811 return;
4812 }
4813
4814 IWL_ERROR("Start IWL Event Log Dump: display count %d, wraps %d\n",
4815 size, num_wraps);
4816
4817 /* if uCode has wrapped back to top of log, start at the oldest entry,
4818 * i.e the next one that uCode would fill. */
4819 if (num_wraps)
4820 iwl4965_print_event_log(priv, next_entry,
4821 capacity - next_entry, mode);
4822
4823 /* (then/else) start at top of log */
4824 iwl4965_print_event_log(priv, 0, next_entry, mode);
4825
4826 iwl4965_release_nic_access(priv);
4827 }
4828
4829 /**
4830 * iwl4965_irq_handle_error - called for HW or SW error interrupt from card
4831 */
4832 static void iwl4965_irq_handle_error(struct iwl4965_priv *priv)
4833 {
4834 /* Set the FW error flag -- cleared on iwl4965_down */
4835 set_bit(STATUS_FW_ERROR, &priv->status);
4836
4837 /* Cancel currently queued command. */
4838 clear_bit(STATUS_HCMD_ACTIVE, &priv->status);
4839
4840 #ifdef CONFIG_IWL4965_DEBUG
4841 if (iwl4965_debug_level & IWL_DL_FW_ERRORS) {
4842 iwl4965_dump_nic_error_log(priv);
4843 iwl4965_dump_nic_event_log(priv);
4844 iwl4965_print_rx_config_cmd(&priv->staging_rxon);
4845 }
4846 #endif
4847
4848 wake_up_interruptible(&priv->wait_command_queue);
4849
4850 /* Keep the restart process from trying to send host
4851 * commands by clearing the INIT status bit */
4852 clear_bit(STATUS_READY, &priv->status);
4853
4854 if (!test_bit(STATUS_EXIT_PENDING, &priv->status)) {
4855 IWL_DEBUG(IWL_DL_INFO | IWL_DL_FW_ERRORS,
4856 "Restarting adapter due to uCode error.\n");
4857
4858 if (iwl4965_is_associated(priv)) {
4859 memcpy(&priv->recovery_rxon, &priv->active_rxon,
4860 sizeof(priv->recovery_rxon));
4861 priv->error_recovering = 1;
4862 }
4863 queue_work(priv->workqueue, &priv->restart);
4864 }
4865 }
4866
4867 static void iwl4965_error_recovery(struct iwl4965_priv *priv)
4868 {
4869 unsigned long flags;
4870
4871 memcpy(&priv->staging_rxon, &priv->recovery_rxon,
4872 sizeof(priv->staging_rxon));
4873 priv->staging_rxon.filter_flags &= ~RXON_FILTER_ASSOC_MSK;
4874 iwl4965_commit_rxon(priv);
4875
4876 iwl4965_rxon_add_station(priv, priv->bssid, 1);
4877
4878 spin_lock_irqsave(&priv->lock, flags);
4879 priv->assoc_id = le16_to_cpu(priv->staging_rxon.assoc_id);
4880 priv->error_recovering = 0;
4881 spin_unlock_irqrestore(&priv->lock, flags);
4882 }
4883
4884 static void iwl4965_irq_tasklet(struct iwl4965_priv *priv)
4885 {
4886 u32 inta, handled = 0;
4887 u32 inta_fh;
4888 unsigned long flags;
4889 #ifdef CONFIG_IWL4965_DEBUG
4890 u32 inta_mask;
4891 #endif
4892
4893 spin_lock_irqsave(&priv->lock, flags);
4894
4895 /* Ack/clear/reset pending uCode interrupts.
4896 * Note: Some bits in CSR_INT are "OR" of bits in CSR_FH_INT_STATUS,
4897 * and will clear only when CSR_FH_INT_STATUS gets cleared. */
4898 inta = iwl4965_read32(priv, CSR_INT);
4899 iwl4965_write32(priv, CSR_INT, inta);
4900
4901 /* Ack/clear/reset pending flow-handler (DMA) interrupts.
4902 * Any new interrupts that happen after this, either while we're
4903 * in this tasklet, or later, will show up in next ISR/tasklet. */
4904 inta_fh = iwl4965_read32(priv, CSR_FH_INT_STATUS);
4905 iwl4965_write32(priv, CSR_FH_INT_STATUS, inta_fh);
4906
4907 #ifdef CONFIG_IWL4965_DEBUG
4908 if (iwl4965_debug_level & IWL_DL_ISR) {
4909 /* just for debug */
4910 inta_mask = iwl4965_read32(priv, CSR_INT_MASK);
4911 IWL_DEBUG_ISR("inta 0x%08x, enabled 0x%08x, fh 0x%08x\n",
4912 inta, inta_mask, inta_fh);
4913 }
4914 #endif
4915
4916 /* Since CSR_INT and CSR_FH_INT_STATUS reads and clears are not
4917 * atomic, make sure that inta covers all the interrupts that
4918 * we've discovered, even if FH interrupt came in just after
4919 * reading CSR_INT. */
4920 if (inta_fh & CSR_FH_INT_RX_MASK)
4921 inta |= CSR_INT_BIT_FH_RX;
4922 if (inta_fh & CSR_FH_INT_TX_MASK)
4923 inta |= CSR_INT_BIT_FH_TX;
4924
4925 /* Now service all interrupt bits discovered above. */
4926 if (inta & CSR_INT_BIT_HW_ERR) {
4927 IWL_ERROR("Microcode HW error detected. Restarting.\n");
4928
4929 /* Tell the device to stop sending interrupts */
4930 iwl4965_disable_interrupts(priv);
4931
4932 iwl4965_irq_handle_error(priv);
4933
4934 handled |= CSR_INT_BIT_HW_ERR;
4935
4936 spin_unlock_irqrestore(&priv->lock, flags);
4937
4938 return;
4939 }
4940
4941 #ifdef CONFIG_IWL4965_DEBUG
4942 if (iwl4965_debug_level & (IWL_DL_ISR)) {
4943 /* NIC fires this, but we don't use it, redundant with WAKEUP */
4944 if (inta & CSR_INT_BIT_SCD)
4945 IWL_DEBUG_ISR("Scheduler finished to transmit "
4946 "the frame/frames.\n");
4947
4948 /* Alive notification via Rx interrupt will do the real work */
4949 if (inta & CSR_INT_BIT_ALIVE)
4950 IWL_DEBUG_ISR("Alive interrupt\n");
4951 }
4952 #endif
4953 /* Safely ignore these bits for debug checks below */
4954 inta &= ~(CSR_INT_BIT_SCD | CSR_INT_BIT_ALIVE);
4955
4956 /* HW RF KILL switch toggled */
4957 if (inta & CSR_INT_BIT_RF_KILL) {
4958 int hw_rf_kill = 0;
4959 if (!(iwl4965_read32(priv, CSR_GP_CNTRL) &
4960 CSR_GP_CNTRL_REG_FLAG_HW_RF_KILL_SW))
4961 hw_rf_kill = 1;
4962
4963 IWL_DEBUG(IWL_DL_INFO | IWL_DL_RF_KILL | IWL_DL_ISR,
4964 "RF_KILL bit toggled to %s.\n",
4965 hw_rf_kill ? "disable radio":"enable radio");
4966
4967 /* Queue restart only if RF_KILL switch was set to "kill"
4968 * when we loaded driver, and is now set to "enable".
4969 * After we're Alive, RF_KILL gets handled by
4970 * iwl4965_rx_card_state_notif() */
4971 if (!hw_rf_kill && !test_bit(STATUS_ALIVE, &priv->status)) {
4972 clear_bit(STATUS_RF_KILL_HW, &priv->status);
4973 queue_work(priv->workqueue, &priv->restart);
4974 }
4975
4976 handled |= CSR_INT_BIT_RF_KILL;
4977 }
4978
4979 /* Chip got too hot and stopped itself */
4980 if (inta & CSR_INT_BIT_CT_KILL) {
4981 IWL_ERROR("Microcode CT kill error detected.\n");
4982 handled |= CSR_INT_BIT_CT_KILL;
4983 }
4984
4985 /* Error detected by uCode */
4986 if (inta & CSR_INT_BIT_SW_ERR) {
4987 IWL_ERROR("Microcode SW error detected. Restarting 0x%X.\n",
4988 inta);
4989 iwl4965_irq_handle_error(priv);
4990 handled |= CSR_INT_BIT_SW_ERR;
4991 }
4992
4993 /* uCode wakes up after power-down sleep */
4994 if (inta & CSR_INT_BIT_WAKEUP) {
4995 IWL_DEBUG_ISR("Wakeup interrupt\n");
4996 iwl4965_rx_queue_update_write_ptr(priv, &priv->rxq);
4997 iwl4965_tx_queue_update_write_ptr(priv, &priv->txq[0]);
4998 iwl4965_tx_queue_update_write_ptr(priv, &priv->txq[1]);
4999 iwl4965_tx_queue_update_write_ptr(priv, &priv->txq[2]);
5000 iwl4965_tx_queue_update_write_ptr(priv, &priv->txq[3]);
5001 iwl4965_tx_queue_update_write_ptr(priv, &priv->txq[4]);
5002 iwl4965_tx_queue_update_write_ptr(priv, &priv->txq[5]);
5003
5004 handled |= CSR_INT_BIT_WAKEUP;
5005 }
5006
5007 /* All uCode command responses, including Tx command responses,
5008 * Rx "responses" (frame-received notification), and other
5009 * notifications from uCode come through here*/
5010 if (inta & (CSR_INT_BIT_FH_RX | CSR_INT_BIT_SW_RX)) {
5011 iwl4965_rx_handle(priv);
5012 handled |= (CSR_INT_BIT_FH_RX | CSR_INT_BIT_SW_RX);
5013 }
5014
5015 if (inta & CSR_INT_BIT_FH_TX) {
5016 IWL_DEBUG_ISR("Tx interrupt\n");
5017 handled |= CSR_INT_BIT_FH_TX;
5018 }
5019
5020 if (inta & ~handled)
5021 IWL_ERROR("Unhandled INTA bits 0x%08x\n", inta & ~handled);
5022
5023 if (inta & ~CSR_INI_SET_MASK) {
5024 IWL_WARNING("Disabled INTA bits 0x%08x were pending\n",
5025 inta & ~CSR_INI_SET_MASK);
5026 IWL_WARNING(" with FH_INT = 0x%08x\n", inta_fh);
5027 }
5028
5029 /* Re-enable all interrupts */
5030 iwl4965_enable_interrupts(priv);
5031
5032 #ifdef CONFIG_IWL4965_DEBUG
5033 if (iwl4965_debug_level & (IWL_DL_ISR)) {
5034 inta = iwl4965_read32(priv, CSR_INT);
5035 inta_mask = iwl4965_read32(priv, CSR_INT_MASK);
5036 inta_fh = iwl4965_read32(priv, CSR_FH_INT_STATUS);
5037 IWL_DEBUG_ISR("End inta 0x%08x, enabled 0x%08x, fh 0x%08x, "
5038 "flags 0x%08lx\n", inta, inta_mask, inta_fh, flags);
5039 }
5040 #endif
5041 spin_unlock_irqrestore(&priv->lock, flags);
5042 }
5043
5044 static irqreturn_t iwl4965_isr(int irq, void *data)
5045 {
5046 struct iwl4965_priv *priv = data;
5047 u32 inta, inta_mask;
5048 u32 inta_fh;
5049 if (!priv)
5050 return IRQ_NONE;
5051
5052 spin_lock(&priv->lock);
5053
5054 /* Disable (but don't clear!) interrupts here to avoid
5055 * back-to-back ISRs and sporadic interrupts from our NIC.
5056 * If we have something to service, the tasklet will re-enable ints.
5057 * If we *don't* have something, we'll re-enable before leaving here. */
5058 inta_mask = iwl4965_read32(priv, CSR_INT_MASK); /* just for debug */
5059 iwl4965_write32(priv, CSR_INT_MASK, 0x00000000);
5060
5061 /* Discover which interrupts are active/pending */
5062 inta = iwl4965_read32(priv, CSR_INT);
5063 inta_fh = iwl4965_read32(priv, CSR_FH_INT_STATUS);
5064
5065 /* Ignore interrupt if there's nothing in NIC to service.
5066 * This may be due to IRQ shared with another device,
5067 * or due to sporadic interrupts thrown from our NIC. */
5068 if (!inta && !inta_fh) {
5069 IWL_DEBUG_ISR("Ignore interrupt, inta == 0, inta_fh == 0\n");
5070 goto none;
5071 }
5072
5073 if ((inta == 0xFFFFFFFF) || ((inta & 0xFFFFFFF0) == 0xa5a5a5a0)) {
5074 /* Hardware disappeared. It might have already raised
5075 * an interrupt */
5076 IWL_WARNING("HARDWARE GONE?? INTA == 0x%080x\n", inta);
5077 goto unplugged;
5078 }
5079
5080 IWL_DEBUG_ISR("ISR inta 0x%08x, enabled 0x%08x, fh 0x%08x\n",
5081 inta, inta_mask, inta_fh);
5082
5083 inta &= ~CSR_INT_BIT_SCD;
5084
5085 /* iwl4965_irq_tasklet() will service interrupts and re-enable them */
5086 if (likely(inta || inta_fh))
5087 tasklet_schedule(&priv->irq_tasklet);
5088
5089 unplugged:
5090 spin_unlock(&priv->lock);
5091 return IRQ_HANDLED;
5092
5093 none:
5094 /* re-enable interrupts here since we don't have anything to service. */
5095 iwl4965_enable_interrupts(priv);
5096 spin_unlock(&priv->lock);
5097 return IRQ_NONE;
5098 }
5099
5100 /************************** EEPROM BANDS ****************************
5101 *
5102 * The iwl4965_eeprom_band definitions below provide the mapping from the
5103 * EEPROM contents to the specific channel number supported for each
5104 * band.
5105 *
5106 * For example, iwl4965_priv->eeprom.band_3_channels[4] from the band_3
5107 * definition below maps to physical channel 42 in the 5.2GHz spectrum.
5108 * The specific geography and calibration information for that channel
5109 * is contained in the eeprom map itself.
5110 *
5111 * During init, we copy the eeprom information and channel map
5112 * information into priv->channel_info_24/52 and priv->channel_map_24/52
5113 *
5114 * channel_map_24/52 provides the index in the channel_info array for a
5115 * given channel. We have to have two separate maps as there is channel
5116 * overlap with the 2.4GHz and 5.2GHz spectrum as seen in band_1 and
5117 * band_2
5118 *
5119 * A value of 0xff stored in the channel_map indicates that the channel
5120 * is not supported by the hardware at all.
5121 *
5122 * A value of 0xfe in the channel_map indicates that the channel is not
5123 * valid for Tx with the current hardware. This means that
5124 * while the system can tune and receive on a given channel, it may not
5125 * be able to associate or transmit any frames on that
5126 * channel. There is no corresponding channel information for that
5127 * entry.
5128 *
5129 *********************************************************************/
5130
5131 /* 2.4 GHz */
5132 static const u8 iwl4965_eeprom_band_1[14] = {
5133 1, 2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13, 14
5134 };
5135
5136 /* 5.2 GHz bands */
5137 static const u8 iwl4965_eeprom_band_2[] = { /* 4915-5080MHz */
5138 183, 184, 185, 187, 188, 189, 192, 196, 7, 8, 11, 12, 16
5139 };
5140
5141 static const u8 iwl4965_eeprom_band_3[] = { /* 5170-5320MHz */
5142 34, 36, 38, 40, 42, 44, 46, 48, 52, 56, 60, 64
5143 };
5144
5145 static const u8 iwl4965_eeprom_band_4[] = { /* 5500-5700MHz */
5146 100, 104, 108, 112, 116, 120, 124, 128, 132, 136, 140
5147 };
5148
5149 static const u8 iwl4965_eeprom_band_5[] = { /* 5725-5825MHz */
5150 145, 149, 153, 157, 161, 165
5151 };
5152
5153 static u8 iwl4965_eeprom_band_6[] = { /* 2.4 FAT channel */
5154 1, 2, 3, 4, 5, 6, 7
5155 };
5156
5157 static u8 iwl4965_eeprom_band_7[] = { /* 5.2 FAT channel */
5158 36, 44, 52, 60, 100, 108, 116, 124, 132, 149, 157
5159 };
5160
5161 static void iwl4965_init_band_reference(const struct iwl4965_priv *priv,
5162 int band,
5163 int *eeprom_ch_count,
5164 const struct iwl4965_eeprom_channel
5165 **eeprom_ch_info,
5166 const u8 **eeprom_ch_index)
5167 {
5168 switch (band) {
5169 case 1: /* 2.4GHz band */
5170 *eeprom_ch_count = ARRAY_SIZE(iwl4965_eeprom_band_1);
5171 *eeprom_ch_info = priv->eeprom.band_1_channels;
5172 *eeprom_ch_index = iwl4965_eeprom_band_1;
5173 break;
5174 case 2: /* 4.9GHz band */
5175 *eeprom_ch_count = ARRAY_SIZE(iwl4965_eeprom_band_2);
5176 *eeprom_ch_info = priv->eeprom.band_2_channels;
5177 *eeprom_ch_index = iwl4965_eeprom_band_2;
5178 break;
5179 case 3: /* 5.2GHz band */
5180 *eeprom_ch_count = ARRAY_SIZE(iwl4965_eeprom_band_3);
5181 *eeprom_ch_info = priv->eeprom.band_3_channels;
5182 *eeprom_ch_index = iwl4965_eeprom_band_3;
5183 break;
5184 case 4: /* 5.5GHz band */
5185 *eeprom_ch_count = ARRAY_SIZE(iwl4965_eeprom_band_4);
5186 *eeprom_ch_info = priv->eeprom.band_4_channels;
5187 *eeprom_ch_index = iwl4965_eeprom_band_4;
5188 break;
5189 case 5: /* 5.7GHz band */
5190 *eeprom_ch_count = ARRAY_SIZE(iwl4965_eeprom_band_5);
5191 *eeprom_ch_info = priv->eeprom.band_5_channels;
5192 *eeprom_ch_index = iwl4965_eeprom_band_5;
5193 break;
5194 case 6: /* 2.4GHz FAT channels */
5195 *eeprom_ch_count = ARRAY_SIZE(iwl4965_eeprom_band_6);
5196 *eeprom_ch_info = priv->eeprom.band_24_channels;
5197 *eeprom_ch_index = iwl4965_eeprom_band_6;
5198 break;
5199 case 7: /* 5 GHz FAT channels */
5200 *eeprom_ch_count = ARRAY_SIZE(iwl4965_eeprom_band_7);
5201 *eeprom_ch_info = priv->eeprom.band_52_channels;
5202 *eeprom_ch_index = iwl4965_eeprom_band_7;
5203 break;
5204 default:
5205 BUG();
5206 return;
5207 }
5208 }
5209
5210 /**
5211 * iwl4965_get_channel_info - Find driver's private channel info
5212 *
5213 * Based on band and channel number.
5214 */
5215 const struct iwl4965_channel_info *iwl4965_get_channel_info(const struct iwl4965_priv *priv,
5216 enum ieee80211_band band, u16 channel)
5217 {
5218 int i;
5219
5220 switch (band) {
5221 case IEEE80211_BAND_5GHZ:
5222 for (i = 14; i < priv->channel_count; i++) {
5223 if (priv->channel_info[i].channel == channel)
5224 return &priv->channel_info[i];
5225 }
5226 break;
5227 case IEEE80211_BAND_2GHZ:
5228 if (channel >= 1 && channel <= 14)
5229 return &priv->channel_info[channel - 1];
5230 break;
5231 default:
5232 BUG();
5233 }
5234
5235 return NULL;
5236 }
5237
5238 #define CHECK_AND_PRINT(x) ((eeprom_ch_info[ch].flags & EEPROM_CHANNEL_##x) \
5239 ? # x " " : "")
5240
5241 /**
5242 * iwl4965_init_channel_map - Set up driver's info for all possible channels
5243 */
5244 static int iwl4965_init_channel_map(struct iwl4965_priv *priv)
5245 {
5246 int eeprom_ch_count = 0;
5247 const u8 *eeprom_ch_index = NULL;
5248 const struct iwl4965_eeprom_channel *eeprom_ch_info = NULL;
5249 int band, ch;
5250 struct iwl4965_channel_info *ch_info;
5251
5252 if (priv->channel_count) {
5253 IWL_DEBUG_INFO("Channel map already initialized.\n");
5254 return 0;
5255 }
5256
5257 if (priv->eeprom.version < 0x2f) {
5258 IWL_WARNING("Unsupported EEPROM version: 0x%04X\n",
5259 priv->eeprom.version);
5260 return -EINVAL;
5261 }
5262
5263 IWL_DEBUG_INFO("Initializing regulatory info from EEPROM\n");
5264
5265 priv->channel_count =
5266 ARRAY_SIZE(iwl4965_eeprom_band_1) +
5267 ARRAY_SIZE(iwl4965_eeprom_band_2) +
5268 ARRAY_SIZE(iwl4965_eeprom_band_3) +
5269 ARRAY_SIZE(iwl4965_eeprom_band_4) +
5270 ARRAY_SIZE(iwl4965_eeprom_band_5);
5271
5272 IWL_DEBUG_INFO("Parsing data for %d channels.\n", priv->channel_count);
5273
5274 priv->channel_info = kzalloc(sizeof(struct iwl4965_channel_info) *
5275 priv->channel_count, GFP_KERNEL);
5276 if (!priv->channel_info) {
5277 IWL_ERROR("Could not allocate channel_info\n");
5278 priv->channel_count = 0;
5279 return -ENOMEM;
5280 }
5281
5282 ch_info = priv->channel_info;
5283
5284 /* Loop through the 5 EEPROM bands adding them in order to the
5285 * channel map we maintain (that contains additional information than
5286 * what just in the EEPROM) */
5287 for (band = 1; band <= 5; band++) {
5288
5289 iwl4965_init_band_reference(priv, band, &eeprom_ch_count,
5290 &eeprom_ch_info, &eeprom_ch_index);
5291
5292 /* Loop through each band adding each of the channels */
5293 for (ch = 0; ch < eeprom_ch_count; ch++) {
5294 ch_info->channel = eeprom_ch_index[ch];
5295 ch_info->band = (band == 1) ? IEEE80211_BAND_2GHZ :
5296 IEEE80211_BAND_5GHZ;
5297
5298 /* permanently store EEPROM's channel regulatory flags
5299 * and max power in channel info database. */
5300 ch_info->eeprom = eeprom_ch_info[ch];
5301
5302 /* Copy the run-time flags so they are there even on
5303 * invalid channels */
5304 ch_info->flags = eeprom_ch_info[ch].flags;
5305
5306 if (!(is_channel_valid(ch_info))) {
5307 IWL_DEBUG_INFO("Ch. %d Flags %x [%sGHz] - "
5308 "No traffic\n",
5309 ch_info->channel,
5310 ch_info->flags,
5311 is_channel_a_band(ch_info) ?
5312 "5.2" : "2.4");
5313 ch_info++;
5314 continue;
5315 }
5316
5317 /* Initialize regulatory-based run-time data */
5318 ch_info->max_power_avg = ch_info->curr_txpow =
5319 eeprom_ch_info[ch].max_power_avg;
5320 ch_info->scan_power = eeprom_ch_info[ch].max_power_avg;
5321 ch_info->min_power = 0;
5322
5323 IWL_DEBUG_INFO("Ch. %d [%sGHz] %s%s%s%s%s%s%s(0x%02x"
5324 " %ddBm): Ad-Hoc %ssupported\n",
5325 ch_info->channel,
5326 is_channel_a_band(ch_info) ?
5327 "5.2" : "2.4",
5328 CHECK_AND_PRINT(VALID),
5329 CHECK_AND_PRINT(IBSS),
5330 CHECK_AND_PRINT(ACTIVE),
5331 CHECK_AND_PRINT(RADAR),
5332 CHECK_AND_PRINT(WIDE),
5333 CHECK_AND_PRINT(NARROW),
5334 CHECK_AND_PRINT(DFS),
5335 eeprom_ch_info[ch].flags,
5336 eeprom_ch_info[ch].max_power_avg,
5337 ((eeprom_ch_info[ch].
5338 flags & EEPROM_CHANNEL_IBSS)
5339 && !(eeprom_ch_info[ch].
5340 flags & EEPROM_CHANNEL_RADAR))
5341 ? "" : "not ");
5342
5343 /* Set the user_txpower_limit to the highest power
5344 * supported by any channel */
5345 if (eeprom_ch_info[ch].max_power_avg >
5346 priv->user_txpower_limit)
5347 priv->user_txpower_limit =
5348 eeprom_ch_info[ch].max_power_avg;
5349
5350 ch_info++;
5351 }
5352 }
5353
5354 /* Two additional EEPROM bands for 2.4 and 5 GHz FAT channels */
5355 for (band = 6; band <= 7; band++) {
5356 enum ieee80211_band ieeeband;
5357 u8 fat_extension_chan;
5358
5359 iwl4965_init_band_reference(priv, band, &eeprom_ch_count,
5360 &eeprom_ch_info, &eeprom_ch_index);
5361
5362 /* EEPROM band 6 is 2.4, band 7 is 5 GHz */
5363 ieeeband = (band == 6) ? IEEE80211_BAND_2GHZ : IEEE80211_BAND_5GHZ;
5364
5365 /* Loop through each band adding each of the channels */
5366 for (ch = 0; ch < eeprom_ch_count; ch++) {
5367
5368 if ((band == 6) &&
5369 ((eeprom_ch_index[ch] == 5) ||
5370 (eeprom_ch_index[ch] == 6) ||
5371 (eeprom_ch_index[ch] == 7)))
5372 fat_extension_chan = HT_IE_EXT_CHANNEL_MAX;
5373 else
5374 fat_extension_chan = HT_IE_EXT_CHANNEL_ABOVE;
5375
5376 /* Set up driver's info for lower half */
5377 iwl4965_set_fat_chan_info(priv, ieeeband,
5378 eeprom_ch_index[ch],
5379 &(eeprom_ch_info[ch]),
5380 fat_extension_chan);
5381
5382 /* Set up driver's info for upper half */
5383 iwl4965_set_fat_chan_info(priv, ieeeband,
5384 (eeprom_ch_index[ch] + 4),
5385 &(eeprom_ch_info[ch]),
5386 HT_IE_EXT_CHANNEL_BELOW);
5387 }
5388 }
5389
5390 return 0;
5391 }
5392
5393 /*
5394 * iwl4965_free_channel_map - undo allocations in iwl4965_init_channel_map
5395 */
5396 static void iwl4965_free_channel_map(struct iwl4965_priv *priv)
5397 {
5398 kfree(priv->channel_info);
5399 priv->channel_count = 0;
5400 }
5401
5402 /* For active scan, listen ACTIVE_DWELL_TIME (msec) on each channel after
5403 * sending probe req. This should be set long enough to hear probe responses
5404 * from more than one AP. */
5405 #define IWL_ACTIVE_DWELL_TIME_24 (20) /* all times in msec */
5406 #define IWL_ACTIVE_DWELL_TIME_52 (10)
5407
5408 /* For faster active scanning, scan will move to the next channel if fewer than
5409 * PLCP_QUIET_THRESH packets are heard on this channel within
5410 * ACTIVE_QUIET_TIME after sending probe request. This shortens the dwell
5411 * time if it's a quiet channel (nothing responded to our probe, and there's
5412 * no other traffic).
5413 * Disable "quiet" feature by setting PLCP_QUIET_THRESH to 0. */
5414 #define IWL_PLCP_QUIET_THRESH __constant_cpu_to_le16(1) /* packets */
5415 #define IWL_ACTIVE_QUIET_TIME __constant_cpu_to_le16(5) /* msec */
5416
5417 /* For passive scan, listen PASSIVE_DWELL_TIME (msec) on each channel.
5418 * Must be set longer than active dwell time.
5419 * For the most reliable scan, set > AP beacon interval (typically 100msec). */
5420 #define IWL_PASSIVE_DWELL_TIME_24 (20) /* all times in msec */
5421 #define IWL_PASSIVE_DWELL_TIME_52 (10)
5422 #define IWL_PASSIVE_DWELL_BASE (100)
5423 #define IWL_CHANNEL_TUNE_TIME 5
5424
5425 static inline u16 iwl4965_get_active_dwell_time(struct iwl4965_priv *priv,
5426 enum ieee80211_band band)
5427 {
5428 if (band == IEEE80211_BAND_5GHZ)
5429 return IWL_ACTIVE_DWELL_TIME_52;
5430 else
5431 return IWL_ACTIVE_DWELL_TIME_24;
5432 }
5433
5434 static u16 iwl4965_get_passive_dwell_time(struct iwl4965_priv *priv,
5435 enum ieee80211_band band)
5436 {
5437 u16 active = iwl4965_get_active_dwell_time(priv, band);
5438 u16 passive = (band != IEEE80211_BAND_5GHZ) ?
5439 IWL_PASSIVE_DWELL_BASE + IWL_PASSIVE_DWELL_TIME_24 :
5440 IWL_PASSIVE_DWELL_BASE + IWL_PASSIVE_DWELL_TIME_52;
5441
5442 if (iwl4965_is_associated(priv)) {
5443 /* If we're associated, we clamp the maximum passive
5444 * dwell time to be 98% of the beacon interval (minus
5445 * 2 * channel tune time) */
5446 passive = priv->beacon_int;
5447 if ((passive > IWL_PASSIVE_DWELL_BASE) || !passive)
5448 passive = IWL_PASSIVE_DWELL_BASE;
5449 passive = (passive * 98) / 100 - IWL_CHANNEL_TUNE_TIME * 2;
5450 }
5451
5452 if (passive <= active)
5453 passive = active + 1;
5454
5455 return passive;
5456 }
5457
5458 static int iwl4965_get_channels_for_scan(struct iwl4965_priv *priv,
5459 enum ieee80211_band band,
5460 u8 is_active, u8 direct_mask,
5461 struct iwl4965_scan_channel *scan_ch)
5462 {
5463 const struct ieee80211_channel *channels = NULL;
5464 const struct ieee80211_supported_band *sband;
5465 const struct iwl4965_channel_info *ch_info;
5466 u16 passive_dwell = 0;
5467 u16 active_dwell = 0;
5468 int added, i;
5469
5470 sband = iwl4965_get_hw_mode(priv, band);
5471 if (!sband)
5472 return 0;
5473
5474 channels = sband->channels;
5475
5476 active_dwell = iwl4965_get_active_dwell_time(priv, band);
5477 passive_dwell = iwl4965_get_passive_dwell_time(priv, band);
5478
5479 for (i = 0, added = 0; i < sband->n_channels; i++) {
5480 if (ieee80211_frequency_to_channel(channels[i].center_freq) ==
5481 le16_to_cpu(priv->active_rxon.channel)) {
5482 if (iwl4965_is_associated(priv)) {
5483 IWL_DEBUG_SCAN
5484 ("Skipping current channel %d\n",
5485 le16_to_cpu(priv->active_rxon.channel));
5486 continue;
5487 }
5488 } else if (priv->only_active_channel)
5489 continue;
5490
5491 scan_ch->channel = ieee80211_frequency_to_channel(channels[i].center_freq);
5492
5493 ch_info = iwl4965_get_channel_info(priv, band,
5494 scan_ch->channel);
5495 if (!is_channel_valid(ch_info)) {
5496 IWL_DEBUG_SCAN("Channel %d is INVALID for this SKU.\n",
5497 scan_ch->channel);
5498 continue;
5499 }
5500
5501 if (!is_active || is_channel_passive(ch_info) ||
5502 (channels[i].flags & IEEE80211_CHAN_PASSIVE_SCAN))
5503 scan_ch->type = 0; /* passive */
5504 else
5505 scan_ch->type = 1; /* active */
5506
5507 if (scan_ch->type & 1)
5508 scan_ch->type |= (direct_mask << 1);
5509
5510 if (is_channel_narrow(ch_info))
5511 scan_ch->type |= (1 << 7);
5512
5513 scan_ch->active_dwell = cpu_to_le16(active_dwell);
5514 scan_ch->passive_dwell = cpu_to_le16(passive_dwell);
5515
5516 /* Set txpower levels to defaults */
5517 scan_ch->tpc.dsp_atten = 110;
5518 /* scan_pwr_info->tpc.dsp_atten; */
5519
5520 /*scan_pwr_info->tpc.tx_gain; */
5521 if (band == IEEE80211_BAND_5GHZ)
5522 scan_ch->tpc.tx_gain = ((1 << 5) | (3 << 3)) | 3;
5523 else {
5524 scan_ch->tpc.tx_gain = ((1 << 5) | (5 << 3));
5525 /* NOTE: if we were doing 6Mb OFDM for scans we'd use
5526 * power level:
5527 * scan_ch->tpc.tx_gain = ((1 << 5) | (2 << 3)) | 3;
5528 */
5529 }
5530
5531 IWL_DEBUG_SCAN("Scanning %d [%s %d]\n",
5532 scan_ch->channel,
5533 (scan_ch->type & 1) ? "ACTIVE" : "PASSIVE",
5534 (scan_ch->type & 1) ?
5535 active_dwell : passive_dwell);
5536
5537 scan_ch++;
5538 added++;
5539 }
5540
5541 IWL_DEBUG_SCAN("total channels to scan %d \n", added);
5542 return added;
5543 }
5544
5545 static void iwl4965_init_hw_rates(struct iwl4965_priv *priv,
5546 struct ieee80211_rate *rates)
5547 {
5548 int i;
5549
5550 for (i = 0; i < IWL_RATE_COUNT; i++) {
5551 rates[i].bitrate = iwl4965_rates[i].ieee * 5;
5552 rates[i].hw_value = i; /* Rate scaling will work on indexes */
5553 rates[i].hw_value_short = i;
5554 rates[i].flags = 0;
5555 if ((i > IWL_LAST_OFDM_RATE) || (i < IWL_FIRST_OFDM_RATE)) {
5556 /*
5557 * If CCK != 1M then set short preamble rate flag.
5558 */
5559 rates[i].flags |= (iwl4965_rates[i].plcp == 10) ?
5560 0 : IEEE80211_RATE_SHORT_PREAMBLE;
5561 }
5562 }
5563 }
5564
5565 /**
5566 * iwl4965_init_geos - Initialize mac80211's geo/channel info based from eeprom
5567 */
5568 static int iwl4965_init_geos(struct iwl4965_priv *priv)
5569 {
5570 struct iwl4965_channel_info *ch;
5571 struct ieee80211_supported_band *sband;
5572 struct ieee80211_channel *channels;
5573 struct ieee80211_channel *geo_ch;
5574 struct ieee80211_rate *rates;
5575 int i = 0;
5576
5577 if (priv->bands[IEEE80211_BAND_2GHZ].n_bitrates ||
5578 priv->bands[IEEE80211_BAND_5GHZ].n_bitrates) {
5579 IWL_DEBUG_INFO("Geography modes already initialized.\n");
5580 set_bit(STATUS_GEO_CONFIGURED, &priv->status);
5581 return 0;
5582 }
5583
5584 channels = kzalloc(sizeof(struct ieee80211_channel) *
5585 priv->channel_count, GFP_KERNEL);
5586 if (!channels)
5587 return -ENOMEM;
5588
5589 rates = kzalloc((sizeof(struct ieee80211_rate) * (IWL_RATE_COUNT + 1)),
5590 GFP_KERNEL);
5591 if (!rates) {
5592 kfree(channels);
5593 return -ENOMEM;
5594 }
5595
5596 /* 5.2GHz channels start after the 2.4GHz channels */
5597 sband = &priv->bands[IEEE80211_BAND_5GHZ];
5598 sband->channels = &channels[ARRAY_SIZE(iwl4965_eeprom_band_1)];
5599 /* just OFDM */
5600 sband->bitrates = &rates[IWL_FIRST_OFDM_RATE];
5601 sband->n_bitrates = IWL_RATE_COUNT - IWL_FIRST_OFDM_RATE;
5602
5603 iwl4965_init_ht_hw_capab(&sband->ht_info, IEEE80211_BAND_5GHZ);
5604
5605 sband = &priv->bands[IEEE80211_BAND_2GHZ];
5606 sband->channels = channels;
5607 /* OFDM & CCK */
5608 sband->bitrates = rates;
5609 sband->n_bitrates = IWL_RATE_COUNT;
5610
5611 iwl4965_init_ht_hw_capab(&sband->ht_info, IEEE80211_BAND_2GHZ);
5612
5613 priv->ieee_channels = channels;
5614 priv->ieee_rates = rates;
5615
5616 iwl4965_init_hw_rates(priv, rates);
5617
5618 for (i = 0; i < priv->channel_count; i++) {
5619 ch = &priv->channel_info[i];
5620
5621 /* FIXME: might be removed if scan is OK */
5622 if (!is_channel_valid(ch))
5623 continue;
5624
5625 if (is_channel_a_band(ch))
5626 sband = &priv->bands[IEEE80211_BAND_5GHZ];
5627 else
5628 sband = &priv->bands[IEEE80211_BAND_2GHZ];
5629
5630 geo_ch = &sband->channels[sband->n_channels++];
5631
5632 geo_ch->center_freq = ieee80211_channel_to_frequency(ch->channel);
5633 geo_ch->max_power = ch->max_power_avg;
5634 geo_ch->max_antenna_gain = 0xff;
5635 geo_ch->hw_value = ch->channel;
5636
5637 if (is_channel_valid(ch)) {
5638 if (!(ch->flags & EEPROM_CHANNEL_IBSS))
5639 geo_ch->flags |= IEEE80211_CHAN_NO_IBSS;
5640
5641 if (!(ch->flags & EEPROM_CHANNEL_ACTIVE))
5642 geo_ch->flags |= IEEE80211_CHAN_PASSIVE_SCAN;
5643
5644 if (ch->flags & EEPROM_CHANNEL_RADAR)
5645 geo_ch->flags |= IEEE80211_CHAN_RADAR;
5646
5647 if (ch->max_power_avg > priv->max_channel_txpower_limit)
5648 priv->max_channel_txpower_limit =
5649 ch->max_power_avg;
5650 } else {
5651 geo_ch->flags |= IEEE80211_CHAN_DISABLED;
5652 }
5653
5654 /* Save flags for reg domain usage */
5655 geo_ch->orig_flags = geo_ch->flags;
5656
5657 IWL_DEBUG_INFO("Channel %d Freq=%d[%sGHz] %s flag=0%X\n",
5658 ch->channel, geo_ch->center_freq,
5659 is_channel_a_band(ch) ? "5.2" : "2.4",
5660 geo_ch->flags & IEEE80211_CHAN_DISABLED ?
5661 "restricted" : "valid",
5662 geo_ch->flags);
5663 }
5664
5665 if ((priv->bands[IEEE80211_BAND_5GHZ].n_channels == 0) && priv->is_abg) {
5666 printk(KERN_INFO DRV_NAME
5667 ": Incorrectly detected BG card as ABG. Please send "
5668 "your PCI ID 0x%04X:0x%04X to maintainer.\n",
5669 priv->pci_dev->device, priv->pci_dev->subsystem_device);
5670 priv->is_abg = 0;
5671 }
5672
5673 printk(KERN_INFO DRV_NAME
5674 ": Tunable channels: %d 802.11bg, %d 802.11a channels\n",
5675 priv->bands[IEEE80211_BAND_2GHZ].n_channels,
5676 priv->bands[IEEE80211_BAND_5GHZ].n_channels);
5677
5678 priv->hw->wiphy->bands[IEEE80211_BAND_2GHZ] = &priv->bands[IEEE80211_BAND_2GHZ];
5679 priv->hw->wiphy->bands[IEEE80211_BAND_5GHZ] = &priv->bands[IEEE80211_BAND_5GHZ];
5680
5681 set_bit(STATUS_GEO_CONFIGURED, &priv->status);
5682
5683 return 0;
5684 }
5685
5686 /*
5687 * iwl4965_free_geos - undo allocations in iwl4965_init_geos
5688 */
5689 static void iwl4965_free_geos(struct iwl4965_priv *priv)
5690 {
5691 kfree(priv->ieee_channels);
5692 kfree(priv->ieee_rates);
5693 clear_bit(STATUS_GEO_CONFIGURED, &priv->status);
5694 }
5695
5696 /******************************************************************************
5697 *
5698 * uCode download functions
5699 *
5700 ******************************************************************************/
5701
5702 static void iwl4965_dealloc_ucode_pci(struct iwl4965_priv *priv)
5703 {
5704 iwl_free_fw_desc(priv->pci_dev, &priv->ucode_code);
5705 iwl_free_fw_desc(priv->pci_dev, &priv->ucode_data);
5706 iwl_free_fw_desc(priv->pci_dev, &priv->ucode_data_backup);
5707 iwl_free_fw_desc(priv->pci_dev, &priv->ucode_init);
5708 iwl_free_fw_desc(priv->pci_dev, &priv->ucode_init_data);
5709 iwl_free_fw_desc(priv->pci_dev, &priv->ucode_boot);
5710 }
5711
5712 /**
5713 * iwl4965_verify_inst_full - verify runtime uCode image in card vs. host,
5714 * looking at all data.
5715 */
5716 static int iwl4965_verify_inst_full(struct iwl4965_priv *priv, __le32 *image,
5717 u32 len)
5718 {
5719 u32 val;
5720 u32 save_len = len;
5721 int rc = 0;
5722 u32 errcnt;
5723
5724 IWL_DEBUG_INFO("ucode inst image size is %u\n", len);
5725
5726 rc = iwl4965_grab_nic_access(priv);
5727 if (rc)
5728 return rc;
5729
5730 iwl4965_write_direct32(priv, HBUS_TARG_MEM_RADDR, RTC_INST_LOWER_BOUND);
5731
5732 errcnt = 0;
5733 for (; len > 0; len -= sizeof(u32), image++) {
5734 /* read data comes through single port, auto-incr addr */
5735 /* NOTE: Use the debugless read so we don't flood kernel log
5736 * if IWL_DL_IO is set */
5737 val = _iwl4965_read_direct32(priv, HBUS_TARG_MEM_RDAT);
5738 if (val != le32_to_cpu(*image)) {
5739 IWL_ERROR("uCode INST section is invalid at "
5740 "offset 0x%x, is 0x%x, s/b 0x%x\n",
5741 save_len - len, val, le32_to_cpu(*image));
5742 rc = -EIO;
5743 errcnt++;
5744 if (errcnt >= 20)
5745 break;
5746 }
5747 }
5748
5749 iwl4965_release_nic_access(priv);
5750
5751 if (!errcnt)
5752 IWL_DEBUG_INFO
5753 ("ucode image in INSTRUCTION memory is good\n");
5754
5755 return rc;
5756 }
5757
5758
5759 /**
5760 * iwl4965_verify_inst_sparse - verify runtime uCode image in card vs. host,
5761 * using sample data 100 bytes apart. If these sample points are good,
5762 * it's a pretty good bet that everything between them is good, too.
5763 */
5764 static int iwl4965_verify_inst_sparse(struct iwl4965_priv *priv, __le32 *image, u32 len)
5765 {
5766 u32 val;
5767 int rc = 0;
5768 u32 errcnt = 0;
5769 u32 i;
5770
5771 IWL_DEBUG_INFO("ucode inst image size is %u\n", len);
5772
5773 rc = iwl4965_grab_nic_access(priv);
5774 if (rc)
5775 return rc;
5776
5777 for (i = 0; i < len; i += 100, image += 100/sizeof(u32)) {
5778 /* read data comes through single port, auto-incr addr */
5779 /* NOTE: Use the debugless read so we don't flood kernel log
5780 * if IWL_DL_IO is set */
5781 iwl4965_write_direct32(priv, HBUS_TARG_MEM_RADDR,
5782 i + RTC_INST_LOWER_BOUND);
5783 val = _iwl4965_read_direct32(priv, HBUS_TARG_MEM_RDAT);
5784 if (val != le32_to_cpu(*image)) {
5785 #if 0 /* Enable this if you want to see details */
5786 IWL_ERROR("uCode INST section is invalid at "
5787 "offset 0x%x, is 0x%x, s/b 0x%x\n",
5788 i, val, *image);
5789 #endif
5790 rc = -EIO;
5791 errcnt++;
5792 if (errcnt >= 3)
5793 break;
5794 }
5795 }
5796
5797 iwl4965_release_nic_access(priv);
5798
5799 return rc;
5800 }
5801
5802
5803 /**
5804 * iwl4965_verify_ucode - determine which instruction image is in SRAM,
5805 * and verify its contents
5806 */
5807 static int iwl4965_verify_ucode(struct iwl4965_priv *priv)
5808 {
5809 __le32 *image;
5810 u32 len;
5811 int rc = 0;
5812
5813 /* Try bootstrap */
5814 image = (__le32 *)priv->ucode_boot.v_addr;
5815 len = priv->ucode_boot.len;
5816 rc = iwl4965_verify_inst_sparse(priv, image, len);
5817 if (rc == 0) {
5818 IWL_DEBUG_INFO("Bootstrap uCode is good in inst SRAM\n");
5819 return 0;
5820 }
5821
5822 /* Try initialize */
5823 image = (__le32 *)priv->ucode_init.v_addr;
5824 len = priv->ucode_init.len;
5825 rc = iwl4965_verify_inst_sparse(priv, image, len);
5826 if (rc == 0) {
5827 IWL_DEBUG_INFO("Initialize uCode is good in inst SRAM\n");
5828 return 0;
5829 }
5830
5831 /* Try runtime/protocol */
5832 image = (__le32 *)priv->ucode_code.v_addr;
5833 len = priv->ucode_code.len;
5834 rc = iwl4965_verify_inst_sparse(priv, image, len);
5835 if (rc == 0) {
5836 IWL_DEBUG_INFO("Runtime uCode is good in inst SRAM\n");
5837 return 0;
5838 }
5839
5840 IWL_ERROR("NO VALID UCODE IMAGE IN INSTRUCTION SRAM!!\n");
5841
5842 /* Since nothing seems to match, show first several data entries in
5843 * instruction SRAM, so maybe visual inspection will give a clue.
5844 * Selection of bootstrap image (vs. other images) is arbitrary. */
5845 image = (__le32 *)priv->ucode_boot.v_addr;
5846 len = priv->ucode_boot.len;
5847 rc = iwl4965_verify_inst_full(priv, image, len);
5848
5849 return rc;
5850 }
5851
5852
5853 /* check contents of special bootstrap uCode SRAM */
5854 static int iwl4965_verify_bsm(struct iwl4965_priv *priv)
5855 {
5856 __le32 *image = priv->ucode_boot.v_addr;
5857 u32 len = priv->ucode_boot.len;
5858 u32 reg;
5859 u32 val;
5860
5861 IWL_DEBUG_INFO("Begin verify bsm\n");
5862
5863 /* verify BSM SRAM contents */
5864 val = iwl4965_read_prph(priv, BSM_WR_DWCOUNT_REG);
5865 for (reg = BSM_SRAM_LOWER_BOUND;
5866 reg < BSM_SRAM_LOWER_BOUND + len;
5867 reg += sizeof(u32), image ++) {
5868 val = iwl4965_read_prph(priv, reg);
5869 if (val != le32_to_cpu(*image)) {
5870 IWL_ERROR("BSM uCode verification failed at "
5871 "addr 0x%08X+%u (of %u), is 0x%x, s/b 0x%x\n",
5872 BSM_SRAM_LOWER_BOUND,
5873 reg - BSM_SRAM_LOWER_BOUND, len,
5874 val, le32_to_cpu(*image));
5875 return -EIO;
5876 }
5877 }
5878
5879 IWL_DEBUG_INFO("BSM bootstrap uCode image OK\n");
5880
5881 return 0;
5882 }
5883
5884 /**
5885 * iwl4965_load_bsm - Load bootstrap instructions
5886 *
5887 * BSM operation:
5888 *
5889 * The Bootstrap State Machine (BSM) stores a short bootstrap uCode program
5890 * in special SRAM that does not power down during RFKILL. When powering back
5891 * up after power-saving sleeps (or during initial uCode load), the BSM loads
5892 * the bootstrap program into the on-board processor, and starts it.
5893 *
5894 * The bootstrap program loads (via DMA) instructions and data for a new
5895 * program from host DRAM locations indicated by the host driver in the
5896 * BSM_DRAM_* registers. Once the new program is loaded, it starts
5897 * automatically.
5898 *
5899 * When initializing the NIC, the host driver points the BSM to the
5900 * "initialize" uCode image. This uCode sets up some internal data, then
5901 * notifies host via "initialize alive" that it is complete.
5902 *
5903 * The host then replaces the BSM_DRAM_* pointer values to point to the
5904 * normal runtime uCode instructions and a backup uCode data cache buffer
5905 * (filled initially with starting data values for the on-board processor),
5906 * then triggers the "initialize" uCode to load and launch the runtime uCode,
5907 * which begins normal operation.
5908 *
5909 * When doing a power-save shutdown, runtime uCode saves data SRAM into
5910 * the backup data cache in DRAM before SRAM is powered down.
5911 *
5912 * When powering back up, the BSM loads the bootstrap program. This reloads
5913 * the runtime uCode instructions and the backup data cache into SRAM,
5914 * and re-launches the runtime uCode from where it left off.
5915 */
5916 static int iwl4965_load_bsm(struct iwl4965_priv *priv)
5917 {
5918 __le32 *image = priv->ucode_boot.v_addr;
5919 u32 len = priv->ucode_boot.len;
5920 dma_addr_t pinst;
5921 dma_addr_t pdata;
5922 u32 inst_len;
5923 u32 data_len;
5924 int rc;
5925 int i;
5926 u32 done;
5927 u32 reg_offset;
5928
5929 IWL_DEBUG_INFO("Begin load bsm\n");
5930
5931 /* make sure bootstrap program is no larger than BSM's SRAM size */
5932 if (len > IWL_MAX_BSM_SIZE)
5933 return -EINVAL;
5934
5935 /* Tell bootstrap uCode where to find the "Initialize" uCode
5936 * in host DRAM ... host DRAM physical address bits 35:4 for 4965.
5937 * NOTE: iwl4965_initialize_alive_start() will replace these values,
5938 * after the "initialize" uCode has run, to point to
5939 * runtime/protocol instructions and backup data cache. */
5940 pinst = priv->ucode_init.p_addr >> 4;
5941 pdata = priv->ucode_init_data.p_addr >> 4;
5942 inst_len = priv->ucode_init.len;
5943 data_len = priv->ucode_init_data.len;
5944
5945 rc = iwl4965_grab_nic_access(priv);
5946 if (rc)
5947 return rc;
5948
5949 iwl4965_write_prph(priv, BSM_DRAM_INST_PTR_REG, pinst);
5950 iwl4965_write_prph(priv, BSM_DRAM_DATA_PTR_REG, pdata);
5951 iwl4965_write_prph(priv, BSM_DRAM_INST_BYTECOUNT_REG, inst_len);
5952 iwl4965_write_prph(priv, BSM_DRAM_DATA_BYTECOUNT_REG, data_len);
5953
5954 /* Fill BSM memory with bootstrap instructions */
5955 for (reg_offset = BSM_SRAM_LOWER_BOUND;
5956 reg_offset < BSM_SRAM_LOWER_BOUND + len;
5957 reg_offset += sizeof(u32), image++)
5958 _iwl4965_write_prph(priv, reg_offset,
5959 le32_to_cpu(*image));
5960
5961 rc = iwl4965_verify_bsm(priv);
5962 if (rc) {
5963 iwl4965_release_nic_access(priv);
5964 return rc;
5965 }
5966
5967 /* Tell BSM to copy from BSM SRAM into instruction SRAM, when asked */
5968 iwl4965_write_prph(priv, BSM_WR_MEM_SRC_REG, 0x0);
5969 iwl4965_write_prph(priv, BSM_WR_MEM_DST_REG,
5970 RTC_INST_LOWER_BOUND);
5971 iwl4965_write_prph(priv, BSM_WR_DWCOUNT_REG, len / sizeof(u32));
5972
5973 /* Load bootstrap code into instruction SRAM now,
5974 * to prepare to load "initialize" uCode */
5975 iwl4965_write_prph(priv, BSM_WR_CTRL_REG,
5976 BSM_WR_CTRL_REG_BIT_START);
5977
5978 /* Wait for load of bootstrap uCode to finish */
5979 for (i = 0; i < 100; i++) {
5980 done = iwl4965_read_prph(priv, BSM_WR_CTRL_REG);
5981 if (!(done & BSM_WR_CTRL_REG_BIT_START))
5982 break;
5983 udelay(10);
5984 }
5985 if (i < 100)
5986 IWL_DEBUG_INFO("BSM write complete, poll %d iterations\n", i);
5987 else {
5988 IWL_ERROR("BSM write did not complete!\n");
5989 return -EIO;
5990 }
5991
5992 /* Enable future boot loads whenever power management unit triggers it
5993 * (e.g. when powering back up after power-save shutdown) */
5994 iwl4965_write_prph(priv, BSM_WR_CTRL_REG,
5995 BSM_WR_CTRL_REG_BIT_START_EN);
5996
5997 iwl4965_release_nic_access(priv);
5998
5999 return 0;
6000 }
6001
6002 static void iwl4965_nic_start(struct iwl4965_priv *priv)
6003 {
6004 /* Remove all resets to allow NIC to operate */
6005 iwl4965_write32(priv, CSR_RESET, 0);
6006 }
6007
6008
6009 /**
6010 * iwl4965_read_ucode - Read uCode images from disk file.
6011 *
6012 * Copy into buffers for card to fetch via bus-mastering
6013 */
6014 static int iwl4965_read_ucode(struct iwl4965_priv *priv)
6015 {
6016 struct iwl4965_ucode *ucode;
6017 int ret;
6018 const struct firmware *ucode_raw;
6019 const char *name = "iwlwifi-4965" IWL4965_UCODE_API ".ucode";
6020 u8 *src;
6021 size_t len;
6022 u32 ver, inst_size, data_size, init_size, init_data_size, boot_size;
6023
6024 /* Ask kernel firmware_class module to get the boot firmware off disk.
6025 * request_firmware() is synchronous, file is in memory on return. */
6026 ret = request_firmware(&ucode_raw, name, &priv->pci_dev->dev);
6027 if (ret < 0) {
6028 IWL_ERROR("%s firmware file req failed: Reason %d\n",
6029 name, ret);
6030 goto error;
6031 }
6032
6033 IWL_DEBUG_INFO("Got firmware '%s' file (%zd bytes) from disk\n",
6034 name, ucode_raw->size);
6035
6036 /* Make sure that we got at least our header! */
6037 if (ucode_raw->size < sizeof(*ucode)) {
6038 IWL_ERROR("File size way too small!\n");
6039 ret = -EINVAL;
6040 goto err_release;
6041 }
6042
6043 /* Data from ucode file: header followed by uCode images */
6044 ucode = (void *)ucode_raw->data;
6045
6046 ver = le32_to_cpu(ucode->ver);
6047 inst_size = le32_to_cpu(ucode->inst_size);
6048 data_size = le32_to_cpu(ucode->data_size);
6049 init_size = le32_to_cpu(ucode->init_size);
6050 init_data_size = le32_to_cpu(ucode->init_data_size);
6051 boot_size = le32_to_cpu(ucode->boot_size);
6052
6053 IWL_DEBUG_INFO("f/w package hdr ucode version = 0x%x\n", ver);
6054 IWL_DEBUG_INFO("f/w package hdr runtime inst size = %u\n",
6055 inst_size);
6056 IWL_DEBUG_INFO("f/w package hdr runtime data size = %u\n",
6057 data_size);
6058 IWL_DEBUG_INFO("f/w package hdr init inst size = %u\n",
6059 init_size);
6060 IWL_DEBUG_INFO("f/w package hdr init data size = %u\n",
6061 init_data_size);
6062 IWL_DEBUG_INFO("f/w package hdr boot inst size = %u\n",
6063 boot_size);
6064
6065 /* Verify size of file vs. image size info in file's header */
6066 if (ucode_raw->size < sizeof(*ucode) +
6067 inst_size + data_size + init_size +
6068 init_data_size + boot_size) {
6069
6070 IWL_DEBUG_INFO("uCode file size %d too small\n",
6071 (int)ucode_raw->size);
6072 ret = -EINVAL;
6073 goto err_release;
6074 }
6075
6076 /* Verify that uCode images will fit in card's SRAM */
6077 if (inst_size > IWL_MAX_INST_SIZE) {
6078 IWL_DEBUG_INFO("uCode instr len %d too large to fit in\n",
6079 inst_size);
6080 ret = -EINVAL;
6081 goto err_release;
6082 }
6083
6084 if (data_size > IWL_MAX_DATA_SIZE) {
6085 IWL_DEBUG_INFO("uCode data len %d too large to fit in\n",
6086 data_size);
6087 ret = -EINVAL;
6088 goto err_release;
6089 }
6090 if (init_size > IWL_MAX_INST_SIZE) {
6091 IWL_DEBUG_INFO
6092 ("uCode init instr len %d too large to fit in\n",
6093 init_size);
6094 ret = -EINVAL;
6095 goto err_release;
6096 }
6097 if (init_data_size > IWL_MAX_DATA_SIZE) {
6098 IWL_DEBUG_INFO
6099 ("uCode init data len %d too large to fit in\n",
6100 init_data_size);
6101 ret = -EINVAL;
6102 goto err_release;
6103 }
6104 if (boot_size > IWL_MAX_BSM_SIZE) {
6105 IWL_DEBUG_INFO
6106 ("uCode boot instr len %d too large to fit in\n",
6107 boot_size);
6108 ret = -EINVAL;
6109 goto err_release;
6110 }
6111
6112 /* Allocate ucode buffers for card's bus-master loading ... */
6113
6114 /* Runtime instructions and 2 copies of data:
6115 * 1) unmodified from disk
6116 * 2) backup cache for save/restore during power-downs */
6117 priv->ucode_code.len = inst_size;
6118 iwl_alloc_fw_desc(priv->pci_dev, &priv->ucode_code);
6119
6120 priv->ucode_data.len = data_size;
6121 iwl_alloc_fw_desc(priv->pci_dev, &priv->ucode_data);
6122
6123 priv->ucode_data_backup.len = data_size;
6124 iwl_alloc_fw_desc(priv->pci_dev, &priv->ucode_data_backup);
6125
6126 /* Initialization instructions and data */
6127 if (init_size && init_data_size) {
6128 priv->ucode_init.len = init_size;
6129 iwl_alloc_fw_desc(priv->pci_dev, &priv->ucode_init);
6130
6131 priv->ucode_init_data.len = init_data_size;
6132 iwl_alloc_fw_desc(priv->pci_dev, &priv->ucode_init_data);
6133
6134 if (!priv->ucode_init.v_addr || !priv->ucode_init_data.v_addr)
6135 goto err_pci_alloc;
6136 }
6137
6138 /* Bootstrap (instructions only, no data) */
6139 if (boot_size) {
6140 priv->ucode_boot.len = boot_size;
6141 iwl_alloc_fw_desc(priv->pci_dev, &priv->ucode_boot);
6142
6143 if (!priv->ucode_boot.v_addr)
6144 goto err_pci_alloc;
6145 }
6146
6147 /* Copy images into buffers for card's bus-master reads ... */
6148
6149 /* Runtime instructions (first block of data in file) */
6150 src = &ucode->data[0];
6151 len = priv->ucode_code.len;
6152 IWL_DEBUG_INFO("Copying (but not loading) uCode instr len %Zd\n", len);
6153 memcpy(priv->ucode_code.v_addr, src, len);
6154 IWL_DEBUG_INFO("uCode instr buf vaddr = 0x%p, paddr = 0x%08x\n",
6155 priv->ucode_code.v_addr, (u32)priv->ucode_code.p_addr);
6156
6157 /* Runtime data (2nd block)
6158 * NOTE: Copy into backup buffer will be done in iwl4965_up() */
6159 src = &ucode->data[inst_size];
6160 len = priv->ucode_data.len;
6161 IWL_DEBUG_INFO("Copying (but not loading) uCode data len %Zd\n", len);
6162 memcpy(priv->ucode_data.v_addr, src, len);
6163 memcpy(priv->ucode_data_backup.v_addr, src, len);
6164
6165 /* Initialization instructions (3rd block) */
6166 if (init_size) {
6167 src = &ucode->data[inst_size + data_size];
6168 len = priv->ucode_init.len;
6169 IWL_DEBUG_INFO("Copying (but not loading) init instr len %Zd\n",
6170 len);
6171 memcpy(priv->ucode_init.v_addr, src, len);
6172 }
6173
6174 /* Initialization data (4th block) */
6175 if (init_data_size) {
6176 src = &ucode->data[inst_size + data_size + init_size];
6177 len = priv->ucode_init_data.len;
6178 IWL_DEBUG_INFO("Copying (but not loading) init data len %Zd\n",
6179 len);
6180 memcpy(priv->ucode_init_data.v_addr, src, len);
6181 }
6182
6183 /* Bootstrap instructions (5th block) */
6184 src = &ucode->data[inst_size + data_size + init_size + init_data_size];
6185 len = priv->ucode_boot.len;
6186 IWL_DEBUG_INFO("Copying (but not loading) boot instr len %Zd\n", len);
6187 memcpy(priv->ucode_boot.v_addr, src, len);
6188
6189 /* We have our copies now, allow OS release its copies */
6190 release_firmware(ucode_raw);
6191 return 0;
6192
6193 err_pci_alloc:
6194 IWL_ERROR("failed to allocate pci memory\n");
6195 ret = -ENOMEM;
6196 iwl4965_dealloc_ucode_pci(priv);
6197
6198 err_release:
6199 release_firmware(ucode_raw);
6200
6201 error:
6202 return ret;
6203 }
6204
6205
6206 /**
6207 * iwl4965_set_ucode_ptrs - Set uCode address location
6208 *
6209 * Tell initialization uCode where to find runtime uCode.
6210 *
6211 * BSM registers initially contain pointers to initialization uCode.
6212 * We need to replace them to load runtime uCode inst and data,
6213 * and to save runtime data when powering down.
6214 */
6215 static int iwl4965_set_ucode_ptrs(struct iwl4965_priv *priv)
6216 {
6217 dma_addr_t pinst;
6218 dma_addr_t pdata;
6219 int rc = 0;
6220 unsigned long flags;
6221
6222 /* bits 35:4 for 4965 */
6223 pinst = priv->ucode_code.p_addr >> 4;
6224 pdata = priv->ucode_data_backup.p_addr >> 4;
6225
6226 spin_lock_irqsave(&priv->lock, flags);
6227 rc = iwl4965_grab_nic_access(priv);
6228 if (rc) {
6229 spin_unlock_irqrestore(&priv->lock, flags);
6230 return rc;
6231 }
6232
6233 /* Tell bootstrap uCode where to find image to load */
6234 iwl4965_write_prph(priv, BSM_DRAM_INST_PTR_REG, pinst);
6235 iwl4965_write_prph(priv, BSM_DRAM_DATA_PTR_REG, pdata);
6236 iwl4965_write_prph(priv, BSM_DRAM_DATA_BYTECOUNT_REG,
6237 priv->ucode_data.len);
6238
6239 /* Inst bytecount must be last to set up, bit 31 signals uCode
6240 * that all new ptr/size info is in place */
6241 iwl4965_write_prph(priv, BSM_DRAM_INST_BYTECOUNT_REG,
6242 priv->ucode_code.len | BSM_DRAM_INST_LOAD);
6243
6244 iwl4965_release_nic_access(priv);
6245
6246 spin_unlock_irqrestore(&priv->lock, flags);
6247
6248 IWL_DEBUG_INFO("Runtime uCode pointers are set.\n");
6249
6250 return rc;
6251 }
6252
6253 /**
6254 * iwl4965_init_alive_start - Called after REPLY_ALIVE notification received
6255 *
6256 * Called after REPLY_ALIVE notification received from "initialize" uCode.
6257 *
6258 * The 4965 "initialize" ALIVE reply contains calibration data for:
6259 * Voltage, temperature, and MIMO tx gain correction, now stored in priv
6260 * (3945 does not contain this data).
6261 *
6262 * Tell "initialize" uCode to go ahead and load the runtime uCode.
6263 */
6264 static void iwl4965_init_alive_start(struct iwl4965_priv *priv)
6265 {
6266 /* Check alive response for "valid" sign from uCode */
6267 if (priv->card_alive_init.is_valid != UCODE_VALID_OK) {
6268 /* We had an error bringing up the hardware, so take it
6269 * all the way back down so we can try again */
6270 IWL_DEBUG_INFO("Initialize Alive failed.\n");
6271 goto restart;
6272 }
6273
6274 /* Bootstrap uCode has loaded initialize uCode ... verify inst image.
6275 * This is a paranoid check, because we would not have gotten the
6276 * "initialize" alive if code weren't properly loaded. */
6277 if (iwl4965_verify_ucode(priv)) {
6278 /* Runtime instruction load was bad;
6279 * take it all the way back down so we can try again */
6280 IWL_DEBUG_INFO("Bad \"initialize\" uCode load.\n");
6281 goto restart;
6282 }
6283
6284 /* Calculate temperature */
6285 priv->temperature = iwl4965_get_temperature(priv);
6286
6287 /* Send pointers to protocol/runtime uCode image ... init code will
6288 * load and launch runtime uCode, which will send us another "Alive"
6289 * notification. */
6290 IWL_DEBUG_INFO("Initialization Alive received.\n");
6291 if (iwl4965_set_ucode_ptrs(priv)) {
6292 /* Runtime instruction load won't happen;
6293 * take it all the way back down so we can try again */
6294 IWL_DEBUG_INFO("Couldn't set up uCode pointers.\n");
6295 goto restart;
6296 }
6297 return;
6298
6299 restart:
6300 queue_work(priv->workqueue, &priv->restart);
6301 }
6302
6303
6304 /**
6305 * iwl4965_alive_start - called after REPLY_ALIVE notification received
6306 * from protocol/runtime uCode (initialization uCode's
6307 * Alive gets handled by iwl4965_init_alive_start()).
6308 */
6309 static void iwl4965_alive_start(struct iwl4965_priv *priv)
6310 {
6311 int rc = 0;
6312
6313 IWL_DEBUG_INFO("Runtime Alive received.\n");
6314
6315 if (priv->card_alive.is_valid != UCODE_VALID_OK) {
6316 /* We had an error bringing up the hardware, so take it
6317 * all the way back down so we can try again */
6318 IWL_DEBUG_INFO("Alive failed.\n");
6319 goto restart;
6320 }
6321
6322 /* Initialize uCode has loaded Runtime uCode ... verify inst image.
6323 * This is a paranoid check, because we would not have gotten the
6324 * "runtime" alive if code weren't properly loaded. */
6325 if (iwl4965_verify_ucode(priv)) {
6326 /* Runtime instruction load was bad;
6327 * take it all the way back down so we can try again */
6328 IWL_DEBUG_INFO("Bad runtime uCode load.\n");
6329 goto restart;
6330 }
6331
6332 iwl4965_clear_stations_table(priv);
6333
6334 rc = iwl4965_alive_notify(priv);
6335 if (rc) {
6336 IWL_WARNING("Could not complete ALIVE transition [ntf]: %d\n",
6337 rc);
6338 goto restart;
6339 }
6340
6341 /* After the ALIVE response, we can send host commands to 4965 uCode */
6342 set_bit(STATUS_ALIVE, &priv->status);
6343
6344 /* Clear out the uCode error bit if it is set */
6345 clear_bit(STATUS_FW_ERROR, &priv->status);
6346
6347 if (iwl4965_is_rfkill(priv))
6348 return;
6349
6350 ieee80211_start_queues(priv->hw);
6351
6352 priv->active_rate = priv->rates_mask;
6353 priv->active_rate_basic = priv->rates_mask & IWL_BASIC_RATES_MASK;
6354
6355 iwl4965_send_power_mode(priv, IWL_POWER_LEVEL(priv->power_mode));
6356
6357 if (iwl4965_is_associated(priv)) {
6358 struct iwl4965_rxon_cmd *active_rxon =
6359 (struct iwl4965_rxon_cmd *)(&priv->active_rxon);
6360
6361 memcpy(&priv->staging_rxon, &priv->active_rxon,
6362 sizeof(priv->staging_rxon));
6363 active_rxon->filter_flags &= ~RXON_FILTER_ASSOC_MSK;
6364 } else {
6365 /* Initialize our rx_config data */
6366 iwl4965_connection_init_rx_config(priv);
6367 memcpy(priv->staging_rxon.node_addr, priv->mac_addr, ETH_ALEN);
6368 }
6369
6370 /* Configure Bluetooth device coexistence support */
6371 iwl4965_send_bt_config(priv);
6372
6373 /* Configure the adapter for unassociated operation */
6374 iwl4965_commit_rxon(priv);
6375
6376 /* At this point, the NIC is initialized and operational */
6377 priv->notif_missed_beacons = 0;
6378 set_bit(STATUS_READY, &priv->status);
6379
6380 iwl4965_rf_kill_ct_config(priv);
6381
6382 IWL_DEBUG_INFO("ALIVE processing complete.\n");
6383 wake_up_interruptible(&priv->wait_command_queue);
6384
6385 if (priv->error_recovering)
6386 iwl4965_error_recovery(priv);
6387
6388 return;
6389
6390 restart:
6391 queue_work(priv->workqueue, &priv->restart);
6392 }
6393
6394 static void iwl4965_cancel_deferred_work(struct iwl4965_priv *priv);
6395
6396 static void __iwl4965_down(struct iwl4965_priv *priv)
6397 {
6398 unsigned long flags;
6399 int exit_pending = test_bit(STATUS_EXIT_PENDING, &priv->status);
6400 struct ieee80211_conf *conf = NULL;
6401
6402 IWL_DEBUG_INFO(DRV_NAME " is going down\n");
6403
6404 conf = ieee80211_get_hw_conf(priv->hw);
6405
6406 if (!exit_pending)
6407 set_bit(STATUS_EXIT_PENDING, &priv->status);
6408
6409 iwl4965_clear_stations_table(priv);
6410
6411 /* Unblock any waiting calls */
6412 wake_up_interruptible_all(&priv->wait_command_queue);
6413
6414 /* Wipe out the EXIT_PENDING status bit if we are not actually
6415 * exiting the module */
6416 if (!exit_pending)
6417 clear_bit(STATUS_EXIT_PENDING, &priv->status);
6418
6419 /* stop and reset the on-board processor */
6420 iwl4965_write32(priv, CSR_RESET, CSR_RESET_REG_FLAG_NEVO_RESET);
6421
6422 /* tell the device to stop sending interrupts */
6423 iwl4965_disable_interrupts(priv);
6424
6425 if (priv->mac80211_registered)
6426 ieee80211_stop_queues(priv->hw);
6427
6428 /* If we have not previously called iwl4965_init() then
6429 * clear all bits but the RF Kill and SUSPEND bits and return */
6430 if (!iwl4965_is_init(priv)) {
6431 priv->status = test_bit(STATUS_RF_KILL_HW, &priv->status) <<
6432 STATUS_RF_KILL_HW |
6433 test_bit(STATUS_RF_KILL_SW, &priv->status) <<
6434 STATUS_RF_KILL_SW |
6435 test_bit(STATUS_GEO_CONFIGURED, &priv->status) <<
6436 STATUS_GEO_CONFIGURED |
6437 test_bit(STATUS_IN_SUSPEND, &priv->status) <<
6438 STATUS_IN_SUSPEND;
6439 goto exit;
6440 }
6441
6442 /* ...otherwise clear out all the status bits but the RF Kill and
6443 * SUSPEND bits and continue taking the NIC down. */
6444 priv->status &= test_bit(STATUS_RF_KILL_HW, &priv->status) <<
6445 STATUS_RF_KILL_HW |
6446 test_bit(STATUS_RF_KILL_SW, &priv->status) <<
6447 STATUS_RF_KILL_SW |
6448 test_bit(STATUS_GEO_CONFIGURED, &priv->status) <<
6449 STATUS_GEO_CONFIGURED |
6450 test_bit(STATUS_IN_SUSPEND, &priv->status) <<
6451 STATUS_IN_SUSPEND |
6452 test_bit(STATUS_FW_ERROR, &priv->status) <<
6453 STATUS_FW_ERROR;
6454
6455 spin_lock_irqsave(&priv->lock, flags);
6456 iwl4965_clear_bit(priv, CSR_GP_CNTRL,
6457 CSR_GP_CNTRL_REG_FLAG_MAC_ACCESS_REQ);
6458 spin_unlock_irqrestore(&priv->lock, flags);
6459
6460 iwl4965_hw_txq_ctx_stop(priv);
6461 iwl4965_hw_rxq_stop(priv);
6462
6463 spin_lock_irqsave(&priv->lock, flags);
6464 if (!iwl4965_grab_nic_access(priv)) {
6465 iwl4965_write_prph(priv, APMG_CLK_DIS_REG,
6466 APMG_CLK_VAL_DMA_CLK_RQT);
6467 iwl4965_release_nic_access(priv);
6468 }
6469 spin_unlock_irqrestore(&priv->lock, flags);
6470
6471 udelay(5);
6472
6473 iwl4965_hw_nic_stop_master(priv);
6474 iwl4965_set_bit(priv, CSR_RESET, CSR_RESET_REG_FLAG_SW_RESET);
6475 iwl4965_hw_nic_reset(priv);
6476
6477 exit:
6478 memset(&priv->card_alive, 0, sizeof(struct iwl4965_alive_resp));
6479
6480 if (priv->ibss_beacon)
6481 dev_kfree_skb(priv->ibss_beacon);
6482 priv->ibss_beacon = NULL;
6483
6484 /* clear out any free frames */
6485 iwl4965_clear_free_frames(priv);
6486 }
6487
6488 static void iwl4965_down(struct iwl4965_priv *priv)
6489 {
6490 mutex_lock(&priv->mutex);
6491 __iwl4965_down(priv);
6492 mutex_unlock(&priv->mutex);
6493
6494 iwl4965_cancel_deferred_work(priv);
6495 }
6496
6497 #define MAX_HW_RESTARTS 5
6498
6499 static int __iwl4965_up(struct iwl4965_priv *priv)
6500 {
6501 int rc, i;
6502
6503 if (test_bit(STATUS_EXIT_PENDING, &priv->status)) {
6504 IWL_WARNING("Exit pending; will not bring the NIC up\n");
6505 return -EIO;
6506 }
6507
6508 if (test_bit(STATUS_RF_KILL_SW, &priv->status)) {
6509 IWL_WARNING("Radio disabled by SW RF kill (module "
6510 "parameter)\n");
6511 return -ENODEV;
6512 }
6513
6514 if (!priv->ucode_data_backup.v_addr || !priv->ucode_data.v_addr) {
6515 IWL_ERROR("ucode not available for device bringup\n");
6516 return -EIO;
6517 }
6518
6519 /* If platform's RF_KILL switch is NOT set to KILL */
6520 if (iwl4965_read32(priv, CSR_GP_CNTRL) &
6521 CSR_GP_CNTRL_REG_FLAG_HW_RF_KILL_SW)
6522 clear_bit(STATUS_RF_KILL_HW, &priv->status);
6523 else {
6524 set_bit(STATUS_RF_KILL_HW, &priv->status);
6525 if (!test_bit(STATUS_IN_SUSPEND, &priv->status)) {
6526 IWL_WARNING("Radio disabled by HW RF Kill switch\n");
6527 return -ENODEV;
6528 }
6529 }
6530
6531 iwl4965_write32(priv, CSR_INT, 0xFFFFFFFF);
6532
6533 rc = iwl4965_hw_nic_init(priv);
6534 if (rc) {
6535 IWL_ERROR("Unable to int nic\n");
6536 return rc;
6537 }
6538
6539 /* make sure rfkill handshake bits are cleared */
6540 iwl4965_write32(priv, CSR_UCODE_DRV_GP1_CLR, CSR_UCODE_SW_BIT_RFKILL);
6541 iwl4965_write32(priv, CSR_UCODE_DRV_GP1_CLR,
6542 CSR_UCODE_DRV_GP1_BIT_CMD_BLOCKED);
6543
6544 /* clear (again), then enable host interrupts */
6545 iwl4965_write32(priv, CSR_INT, 0xFFFFFFFF);
6546 iwl4965_enable_interrupts(priv);
6547
6548 /* really make sure rfkill handshake bits are cleared */
6549 iwl4965_write32(priv, CSR_UCODE_DRV_GP1_CLR, CSR_UCODE_SW_BIT_RFKILL);
6550 iwl4965_write32(priv, CSR_UCODE_DRV_GP1_CLR, CSR_UCODE_SW_BIT_RFKILL);
6551
6552 /* Copy original ucode data image from disk into backup cache.
6553 * This will be used to initialize the on-board processor's
6554 * data SRAM for a clean start when the runtime program first loads. */
6555 memcpy(priv->ucode_data_backup.v_addr, priv->ucode_data.v_addr,
6556 priv->ucode_data.len);
6557
6558 /* We return success when we resume from suspend and rf_kill is on. */
6559 if (test_bit(STATUS_RF_KILL_HW, &priv->status))
6560 return 0;
6561
6562 for (i = 0; i < MAX_HW_RESTARTS; i++) {
6563
6564 iwl4965_clear_stations_table(priv);
6565
6566 /* load bootstrap state machine,
6567 * load bootstrap program into processor's memory,
6568 * prepare to load the "initialize" uCode */
6569 rc = iwl4965_load_bsm(priv);
6570
6571 if (rc) {
6572 IWL_ERROR("Unable to set up bootstrap uCode: %d\n", rc);
6573 continue;
6574 }
6575
6576 /* start card; "initialize" will load runtime ucode */
6577 iwl4965_nic_start(priv);
6578
6579 IWL_DEBUG_INFO(DRV_NAME " is coming up\n");
6580
6581 return 0;
6582 }
6583
6584 set_bit(STATUS_EXIT_PENDING, &priv->status);
6585 __iwl4965_down(priv);
6586
6587 /* tried to restart and config the device for as long as our
6588 * patience could withstand */
6589 IWL_ERROR("Unable to initialize device after %d attempts.\n", i);
6590 return -EIO;
6591 }
6592
6593
6594 /*****************************************************************************
6595 *
6596 * Workqueue callbacks
6597 *
6598 *****************************************************************************/
6599
6600 static void iwl4965_bg_init_alive_start(struct work_struct *data)
6601 {
6602 struct iwl4965_priv *priv =
6603 container_of(data, struct iwl4965_priv, init_alive_start.work);
6604
6605 if (test_bit(STATUS_EXIT_PENDING, &priv->status))
6606 return;
6607
6608 mutex_lock(&priv->mutex);
6609 iwl4965_init_alive_start(priv);
6610 mutex_unlock(&priv->mutex);
6611 }
6612
6613 static void iwl4965_bg_alive_start(struct work_struct *data)
6614 {
6615 struct iwl4965_priv *priv =
6616 container_of(data, struct iwl4965_priv, alive_start.work);
6617
6618 if (test_bit(STATUS_EXIT_PENDING, &priv->status))
6619 return;
6620
6621 mutex_lock(&priv->mutex);
6622 iwl4965_alive_start(priv);
6623 mutex_unlock(&priv->mutex);
6624 }
6625
6626 static void iwl4965_bg_rf_kill(struct work_struct *work)
6627 {
6628 struct iwl4965_priv *priv = container_of(work, struct iwl4965_priv, rf_kill);
6629
6630 wake_up_interruptible(&priv->wait_command_queue);
6631
6632 if (test_bit(STATUS_EXIT_PENDING, &priv->status))
6633 return;
6634
6635 mutex_lock(&priv->mutex);
6636
6637 if (!iwl4965_is_rfkill(priv)) {
6638 IWL_DEBUG(IWL_DL_INFO | IWL_DL_RF_KILL,
6639 "HW and/or SW RF Kill no longer active, restarting "
6640 "device\n");
6641 if (!test_bit(STATUS_EXIT_PENDING, &priv->status))
6642 queue_work(priv->workqueue, &priv->restart);
6643 } else {
6644
6645 if (!test_bit(STATUS_RF_KILL_HW, &priv->status))
6646 IWL_DEBUG_RF_KILL("Can not turn radio back on - "
6647 "disabled by SW switch\n");
6648 else
6649 IWL_WARNING("Radio Frequency Kill Switch is On:\n"
6650 "Kill switch must be turned off for "
6651 "wireless networking to work.\n");
6652 }
6653 mutex_unlock(&priv->mutex);
6654 }
6655
6656 #define IWL_SCAN_CHECK_WATCHDOG (7 * HZ)
6657
6658 static void iwl4965_bg_scan_check(struct work_struct *data)
6659 {
6660 struct iwl4965_priv *priv =
6661 container_of(data, struct iwl4965_priv, scan_check.work);
6662
6663 if (test_bit(STATUS_EXIT_PENDING, &priv->status))
6664 return;
6665
6666 mutex_lock(&priv->mutex);
6667 if (test_bit(STATUS_SCANNING, &priv->status) ||
6668 test_bit(STATUS_SCAN_ABORTING, &priv->status)) {
6669 IWL_DEBUG(IWL_DL_INFO | IWL_DL_SCAN,
6670 "Scan completion watchdog resetting adapter (%dms)\n",
6671 jiffies_to_msecs(IWL_SCAN_CHECK_WATCHDOG));
6672
6673 if (!test_bit(STATUS_EXIT_PENDING, &priv->status))
6674 iwl4965_send_scan_abort(priv);
6675 }
6676 mutex_unlock(&priv->mutex);
6677 }
6678
6679 static void iwl4965_bg_request_scan(struct work_struct *data)
6680 {
6681 struct iwl4965_priv *priv =
6682 container_of(data, struct iwl4965_priv, request_scan);
6683 struct iwl4965_host_cmd cmd = {
6684 .id = REPLY_SCAN_CMD,
6685 .len = sizeof(struct iwl4965_scan_cmd),
6686 .meta.flags = CMD_SIZE_HUGE,
6687 };
6688 int rc = 0;
6689 struct iwl4965_scan_cmd *scan;
6690 struct ieee80211_conf *conf = NULL;
6691 u16 cmd_len;
6692 enum ieee80211_band band;
6693 u8 direct_mask;
6694
6695 conf = ieee80211_get_hw_conf(priv->hw);
6696
6697 mutex_lock(&priv->mutex);
6698
6699 if (!iwl4965_is_ready(priv)) {
6700 IWL_WARNING("request scan called when driver not ready.\n");
6701 goto done;
6702 }
6703
6704 /* Make sure the scan wasn't cancelled before this queued work
6705 * was given the chance to run... */
6706 if (!test_bit(STATUS_SCANNING, &priv->status))
6707 goto done;
6708
6709 /* This should never be called or scheduled if there is currently
6710 * a scan active in the hardware. */
6711 if (test_bit(STATUS_SCAN_HW, &priv->status)) {
6712 IWL_DEBUG_INFO("Multiple concurrent scan requests in parallel. "
6713 "Ignoring second request.\n");
6714 rc = -EIO;
6715 goto done;
6716 }
6717
6718 if (test_bit(STATUS_EXIT_PENDING, &priv->status)) {
6719 IWL_DEBUG_SCAN("Aborting scan due to device shutdown\n");
6720 goto done;
6721 }
6722
6723 if (test_bit(STATUS_SCAN_ABORTING, &priv->status)) {
6724 IWL_DEBUG_HC("Scan request while abort pending. Queuing.\n");
6725 goto done;
6726 }
6727
6728 if (iwl4965_is_rfkill(priv)) {
6729 IWL_DEBUG_HC("Aborting scan due to RF Kill activation\n");
6730 goto done;
6731 }
6732
6733 if (!test_bit(STATUS_READY, &priv->status)) {
6734 IWL_DEBUG_HC("Scan request while uninitialized. Queuing.\n");
6735 goto done;
6736 }
6737
6738 if (!priv->scan_bands) {
6739 IWL_DEBUG_HC("Aborting scan due to no requested bands\n");
6740 goto done;
6741 }
6742
6743 if (!priv->scan) {
6744 priv->scan = kmalloc(sizeof(struct iwl4965_scan_cmd) +
6745 IWL_MAX_SCAN_SIZE, GFP_KERNEL);
6746 if (!priv->scan) {
6747 rc = -ENOMEM;
6748 goto done;
6749 }
6750 }
6751 scan = priv->scan;
6752 memset(scan, 0, sizeof(struct iwl4965_scan_cmd) + IWL_MAX_SCAN_SIZE);
6753
6754 scan->quiet_plcp_th = IWL_PLCP_QUIET_THRESH;
6755 scan->quiet_time = IWL_ACTIVE_QUIET_TIME;
6756
6757 if (iwl4965_is_associated(priv)) {
6758 u16 interval = 0;
6759 u32 extra;
6760 u32 suspend_time = 100;
6761 u32 scan_suspend_time = 100;
6762 unsigned long flags;
6763
6764 IWL_DEBUG_INFO("Scanning while associated...\n");
6765
6766 spin_lock_irqsave(&priv->lock, flags);
6767 interval = priv->beacon_int;
6768 spin_unlock_irqrestore(&priv->lock, flags);
6769
6770 scan->suspend_time = 0;
6771 scan->max_out_time = cpu_to_le32(200 * 1024);
6772 if (!interval)
6773 interval = suspend_time;
6774
6775 extra = (suspend_time / interval) << 22;
6776 scan_suspend_time = (extra |
6777 ((suspend_time % interval) * 1024));
6778 scan->suspend_time = cpu_to_le32(scan_suspend_time);
6779 IWL_DEBUG_SCAN("suspend_time 0x%X beacon interval %d\n",
6780 scan_suspend_time, interval);
6781 }
6782
6783 /* We should add the ability for user to lock to PASSIVE ONLY */
6784 if (priv->one_direct_scan) {
6785 IWL_DEBUG_SCAN
6786 ("Kicking off one direct scan for '%s'\n",
6787 iwl4965_escape_essid(priv->direct_ssid,
6788 priv->direct_ssid_len));
6789 scan->direct_scan[0].id = WLAN_EID_SSID;
6790 scan->direct_scan[0].len = priv->direct_ssid_len;
6791 memcpy(scan->direct_scan[0].ssid,
6792 priv->direct_ssid, priv->direct_ssid_len);
6793 direct_mask = 1;
6794 } else if (!iwl4965_is_associated(priv) && priv->essid_len) {
6795 scan->direct_scan[0].id = WLAN_EID_SSID;
6796 scan->direct_scan[0].len = priv->essid_len;
6797 memcpy(scan->direct_scan[0].ssid, priv->essid, priv->essid_len);
6798 direct_mask = 1;
6799 } else
6800 direct_mask = 0;
6801
6802 scan->tx_cmd.tx_flags = TX_CMD_FLG_SEQ_CTL_MSK;
6803 scan->tx_cmd.sta_id = priv->hw_setting.bcast_sta_id;
6804 scan->tx_cmd.stop_time.life_time = TX_CMD_LIFE_TIME_INFINITE;
6805
6806
6807 switch (priv->scan_bands) {
6808 case 2:
6809 scan->flags = RXON_FLG_BAND_24G_MSK | RXON_FLG_AUTO_DETECT_MSK;
6810 scan->tx_cmd.rate_n_flags =
6811 iwl4965_hw_set_rate_n_flags(IWL_RATE_1M_PLCP,
6812 RATE_MCS_ANT_B_MSK|RATE_MCS_CCK_MSK);
6813
6814 scan->good_CRC_th = 0;
6815 band = IEEE80211_BAND_2GHZ;
6816 break;
6817
6818 case 1:
6819 scan->tx_cmd.rate_n_flags =
6820 iwl4965_hw_set_rate_n_flags(IWL_RATE_6M_PLCP,
6821 RATE_MCS_ANT_B_MSK);
6822 scan->good_CRC_th = IWL_GOOD_CRC_TH;
6823 band = IEEE80211_BAND_5GHZ;
6824 break;
6825
6826 default:
6827 IWL_WARNING("Invalid scan band count\n");
6828 goto done;
6829 }
6830
6831 /* We don't build a direct scan probe request; the uCode will do
6832 * that based on the direct_mask added to each channel entry */
6833 cmd_len = iwl4965_fill_probe_req(priv, band,
6834 (struct ieee80211_mgmt *)scan->data,
6835 IWL_MAX_SCAN_SIZE - sizeof(*scan), 0);
6836
6837 scan->tx_cmd.len = cpu_to_le16(cmd_len);
6838 /* select Rx chains */
6839
6840 /* Force use of chains B and C (0x6) for scan Rx.
6841 * Avoid A (0x1) because of its off-channel reception on A-band.
6842 * MIMO is not used here, but value is required to make uCode happy. */
6843 scan->rx_chain = RXON_RX_CHAIN_DRIVER_FORCE_MSK |
6844 cpu_to_le16((0x7 << RXON_RX_CHAIN_VALID_POS) |
6845 (0x6 << RXON_RX_CHAIN_FORCE_SEL_POS) |
6846 (0x7 << RXON_RX_CHAIN_FORCE_MIMO_SEL_POS));
6847
6848 if (priv->iw_mode == IEEE80211_IF_TYPE_MNTR)
6849 scan->filter_flags = RXON_FILTER_PROMISC_MSK;
6850
6851 if (direct_mask)
6852 IWL_DEBUG_SCAN
6853 ("Initiating direct scan for %s.\n",
6854 iwl4965_escape_essid(priv->essid, priv->essid_len));
6855 else
6856 IWL_DEBUG_SCAN("Initiating indirect scan.\n");
6857
6858 scan->channel_count =
6859 iwl4965_get_channels_for_scan(
6860 priv, band, 1, /* active */
6861 direct_mask,
6862 (void *)&scan->data[le16_to_cpu(scan->tx_cmd.len)]);
6863
6864 cmd.len += le16_to_cpu(scan->tx_cmd.len) +
6865 scan->channel_count * sizeof(struct iwl4965_scan_channel);
6866 cmd.data = scan;
6867 scan->len = cpu_to_le16(cmd.len);
6868
6869 set_bit(STATUS_SCAN_HW, &priv->status);
6870 rc = iwl4965_send_cmd_sync(priv, &cmd);
6871 if (rc)
6872 goto done;
6873
6874 queue_delayed_work(priv->workqueue, &priv->scan_check,
6875 IWL_SCAN_CHECK_WATCHDOG);
6876
6877 mutex_unlock(&priv->mutex);
6878 return;
6879
6880 done:
6881 /* inform mac80211 scan aborted */
6882 queue_work(priv->workqueue, &priv->scan_completed);
6883 mutex_unlock(&priv->mutex);
6884 }
6885
6886 static void iwl4965_bg_up(struct work_struct *data)
6887 {
6888 struct iwl4965_priv *priv = container_of(data, struct iwl4965_priv, up);
6889
6890 if (test_bit(STATUS_EXIT_PENDING, &priv->status))
6891 return;
6892
6893 mutex_lock(&priv->mutex);
6894 __iwl4965_up(priv);
6895 mutex_unlock(&priv->mutex);
6896 }
6897
6898 static void iwl4965_bg_restart(struct work_struct *data)
6899 {
6900 struct iwl4965_priv *priv = container_of(data, struct iwl4965_priv, restart);
6901
6902 if (test_bit(STATUS_EXIT_PENDING, &priv->status))
6903 return;
6904
6905 iwl4965_down(priv);
6906 queue_work(priv->workqueue, &priv->up);
6907 }
6908
6909 static void iwl4965_bg_rx_replenish(struct work_struct *data)
6910 {
6911 struct iwl4965_priv *priv =
6912 container_of(data, struct iwl4965_priv, rx_replenish);
6913
6914 if (test_bit(STATUS_EXIT_PENDING, &priv->status))
6915 return;
6916
6917 mutex_lock(&priv->mutex);
6918 iwl4965_rx_replenish(priv);
6919 mutex_unlock(&priv->mutex);
6920 }
6921
6922 #define IWL_DELAY_NEXT_SCAN (HZ*2)
6923
6924 static void iwl4965_bg_post_associate(struct work_struct *data)
6925 {
6926 struct iwl4965_priv *priv = container_of(data, struct iwl4965_priv,
6927 post_associate.work);
6928
6929 int rc = 0;
6930 struct ieee80211_conf *conf = NULL;
6931 DECLARE_MAC_BUF(mac);
6932
6933 if (priv->iw_mode == IEEE80211_IF_TYPE_AP) {
6934 IWL_ERROR("%s Should not be called in AP mode\n", __FUNCTION__);
6935 return;
6936 }
6937
6938 IWL_DEBUG_ASSOC("Associated as %d to: %s\n",
6939 priv->assoc_id,
6940 print_mac(mac, priv->active_rxon.bssid_addr));
6941
6942
6943 if (test_bit(STATUS_EXIT_PENDING, &priv->status))
6944 return;
6945
6946 mutex_lock(&priv->mutex);
6947
6948 if (!priv->vif || !priv->is_open) {
6949 mutex_unlock(&priv->mutex);
6950 return;
6951 }
6952 iwl4965_scan_cancel_timeout(priv, 200);
6953
6954 conf = ieee80211_get_hw_conf(priv->hw);
6955
6956 priv->staging_rxon.filter_flags &= ~RXON_FILTER_ASSOC_MSK;
6957 iwl4965_commit_rxon(priv);
6958
6959 memset(&priv->rxon_timing, 0, sizeof(struct iwl4965_rxon_time_cmd));
6960 iwl4965_setup_rxon_timing(priv);
6961 rc = iwl4965_send_cmd_pdu(priv, REPLY_RXON_TIMING,
6962 sizeof(priv->rxon_timing), &priv->rxon_timing);
6963 if (rc)
6964 IWL_WARNING("REPLY_RXON_TIMING failed - "
6965 "Attempting to continue.\n");
6966
6967 priv->staging_rxon.filter_flags |= RXON_FILTER_ASSOC_MSK;
6968
6969 #ifdef CONFIG_IWL4965_HT
6970 if (priv->current_ht_config.is_ht)
6971 iwl4965_set_rxon_ht(priv, &priv->current_ht_config);
6972 #endif /* CONFIG_IWL4965_HT*/
6973 iwl4965_set_rxon_chain(priv);
6974 priv->staging_rxon.assoc_id = cpu_to_le16(priv->assoc_id);
6975
6976 IWL_DEBUG_ASSOC("assoc id %d beacon interval %d\n",
6977 priv->assoc_id, priv->beacon_int);
6978
6979 if (priv->assoc_capability & WLAN_CAPABILITY_SHORT_PREAMBLE)
6980 priv->staging_rxon.flags |= RXON_FLG_SHORT_PREAMBLE_MSK;
6981 else
6982 priv->staging_rxon.flags &= ~RXON_FLG_SHORT_PREAMBLE_MSK;
6983
6984 if (priv->staging_rxon.flags & RXON_FLG_BAND_24G_MSK) {
6985 if (priv->assoc_capability & WLAN_CAPABILITY_SHORT_SLOT_TIME)
6986 priv->staging_rxon.flags |= RXON_FLG_SHORT_SLOT_MSK;
6987 else
6988 priv->staging_rxon.flags &= ~RXON_FLG_SHORT_SLOT_MSK;
6989
6990 if (priv->iw_mode == IEEE80211_IF_TYPE_IBSS)
6991 priv->staging_rxon.flags &= ~RXON_FLG_SHORT_SLOT_MSK;
6992
6993 }
6994
6995 iwl4965_commit_rxon(priv);
6996
6997 switch (priv->iw_mode) {
6998 case IEEE80211_IF_TYPE_STA:
6999 iwl4965_rate_scale_init(priv->hw, IWL_AP_ID);
7000 break;
7001
7002 case IEEE80211_IF_TYPE_IBSS:
7003
7004 /* clear out the station table */
7005 iwl4965_clear_stations_table(priv);
7006
7007 iwl4965_rxon_add_station(priv, iwl4965_broadcast_addr, 0);
7008 iwl4965_rxon_add_station(priv, priv->bssid, 0);
7009 iwl4965_rate_scale_init(priv->hw, IWL_STA_ID);
7010 iwl4965_send_beacon_cmd(priv);
7011
7012 break;
7013
7014 default:
7015 IWL_ERROR("%s Should not be called in %d mode\n",
7016 __FUNCTION__, priv->iw_mode);
7017 break;
7018 }
7019
7020 iwl4965_sequence_reset(priv);
7021
7022 #ifdef CONFIG_IWL4965_SENSITIVITY
7023 /* Enable Rx differential gain and sensitivity calibrations */
7024 iwl4965_chain_noise_reset(priv);
7025 priv->start_calib = 1;
7026 #endif /* CONFIG_IWL4965_SENSITIVITY */
7027
7028 if (priv->iw_mode == IEEE80211_IF_TYPE_IBSS)
7029 priv->assoc_station_added = 1;
7030
7031 iwl4965_activate_qos(priv, 0);
7032
7033 /* we have just associated, don't start scan too early */
7034 priv->next_scan_jiffies = jiffies + IWL_DELAY_NEXT_SCAN;
7035 mutex_unlock(&priv->mutex);
7036 }
7037
7038 static void iwl4965_bg_abort_scan(struct work_struct *work)
7039 {
7040 struct iwl4965_priv *priv = container_of(work, struct iwl4965_priv, abort_scan);
7041
7042 if (!iwl4965_is_ready(priv))
7043 return;
7044
7045 mutex_lock(&priv->mutex);
7046
7047 set_bit(STATUS_SCAN_ABORTING, &priv->status);
7048 iwl4965_send_scan_abort(priv);
7049
7050 mutex_unlock(&priv->mutex);
7051 }
7052
7053 static int iwl4965_mac_config(struct ieee80211_hw *hw, struct ieee80211_conf *conf);
7054
7055 static void iwl4965_bg_scan_completed(struct work_struct *work)
7056 {
7057 struct iwl4965_priv *priv =
7058 container_of(work, struct iwl4965_priv, scan_completed);
7059
7060 IWL_DEBUG(IWL_DL_INFO | IWL_DL_SCAN, "SCAN complete scan\n");
7061
7062 if (test_bit(STATUS_EXIT_PENDING, &priv->status))
7063 return;
7064
7065 if (test_bit(STATUS_CONF_PENDING, &priv->status))
7066 iwl4965_mac_config(priv->hw, ieee80211_get_hw_conf(priv->hw));
7067
7068 ieee80211_scan_completed(priv->hw);
7069
7070 /* Since setting the TXPOWER may have been deferred while
7071 * performing the scan, fire one off */
7072 mutex_lock(&priv->mutex);
7073 iwl4965_hw_reg_send_txpower(priv);
7074 mutex_unlock(&priv->mutex);
7075 }
7076
7077 /*****************************************************************************
7078 *
7079 * mac80211 entry point functions
7080 *
7081 *****************************************************************************/
7082
7083 #define UCODE_READY_TIMEOUT (2 * HZ)
7084
7085 static int iwl4965_mac_start(struct ieee80211_hw *hw)
7086 {
7087 struct iwl4965_priv *priv = hw->priv;
7088 int ret;
7089
7090 IWL_DEBUG_MAC80211("enter\n");
7091
7092 if (pci_enable_device(priv->pci_dev)) {
7093 IWL_ERROR("Fail to pci_enable_device\n");
7094 return -ENODEV;
7095 }
7096 pci_restore_state(priv->pci_dev);
7097 pci_enable_msi(priv->pci_dev);
7098
7099 ret = request_irq(priv->pci_dev->irq, iwl4965_isr, IRQF_SHARED,
7100 DRV_NAME, priv);
7101 if (ret) {
7102 IWL_ERROR("Error allocating IRQ %d\n", priv->pci_dev->irq);
7103 goto out_disable_msi;
7104 }
7105
7106 /* we should be verifying the device is ready to be opened */
7107 mutex_lock(&priv->mutex);
7108
7109 memset(&priv->staging_rxon, 0, sizeof(struct iwl4965_rxon_cmd));
7110 /* fetch ucode file from disk, alloc and copy to bus-master buffers ...
7111 * ucode filename and max sizes are card-specific. */
7112
7113 if (!priv->ucode_code.len) {
7114 ret = iwl4965_read_ucode(priv);
7115 if (ret) {
7116 IWL_ERROR("Could not read microcode: %d\n", ret);
7117 mutex_unlock(&priv->mutex);
7118 goto out_release_irq;
7119 }
7120 }
7121
7122 ret = __iwl4965_up(priv);
7123
7124 mutex_unlock(&priv->mutex);
7125
7126 if (ret)
7127 goto out_release_irq;
7128
7129 IWL_DEBUG_INFO("Start UP work done.\n");
7130
7131 if (test_bit(STATUS_IN_SUSPEND, &priv->status))
7132 return 0;
7133
7134 /* Wait for START_ALIVE from ucode. Otherwise callbacks from
7135 * mac80211 will not be run successfully. */
7136 ret = wait_event_interruptible_timeout(priv->wait_command_queue,
7137 test_bit(STATUS_READY, &priv->status),
7138 UCODE_READY_TIMEOUT);
7139 if (!ret) {
7140 if (!test_bit(STATUS_READY, &priv->status)) {
7141 IWL_ERROR("Wait for START_ALIVE timeout after %dms.\n",
7142 jiffies_to_msecs(UCODE_READY_TIMEOUT));
7143 ret = -ETIMEDOUT;
7144 goto out_release_irq;
7145 }
7146 }
7147
7148 priv->is_open = 1;
7149 IWL_DEBUG_MAC80211("leave\n");
7150 return 0;
7151
7152 out_release_irq:
7153 free_irq(priv->pci_dev->irq, priv);
7154 out_disable_msi:
7155 pci_disable_msi(priv->pci_dev);
7156 pci_disable_device(priv->pci_dev);
7157 priv->is_open = 0;
7158 IWL_DEBUG_MAC80211("leave - failed\n");
7159 return ret;
7160 }
7161
7162 static void iwl4965_mac_stop(struct ieee80211_hw *hw)
7163 {
7164 struct iwl4965_priv *priv = hw->priv;
7165
7166 IWL_DEBUG_MAC80211("enter\n");
7167
7168 if (!priv->is_open) {
7169 IWL_DEBUG_MAC80211("leave - skip\n");
7170 return;
7171 }
7172
7173 priv->is_open = 0;
7174
7175 if (iwl4965_is_ready_rf(priv)) {
7176 /* stop mac, cancel any scan request and clear
7177 * RXON_FILTER_ASSOC_MSK BIT
7178 */
7179 mutex_lock(&priv->mutex);
7180 iwl4965_scan_cancel_timeout(priv, 100);
7181 cancel_delayed_work(&priv->post_associate);
7182 mutex_unlock(&priv->mutex);
7183 }
7184
7185 iwl4965_down(priv);
7186
7187 flush_workqueue(priv->workqueue);
7188 free_irq(priv->pci_dev->irq, priv);
7189 pci_disable_msi(priv->pci_dev);
7190 pci_save_state(priv->pci_dev);
7191 pci_disable_device(priv->pci_dev);
7192
7193 IWL_DEBUG_MAC80211("leave\n");
7194 }
7195
7196 static int iwl4965_mac_tx(struct ieee80211_hw *hw, struct sk_buff *skb,
7197 struct ieee80211_tx_control *ctl)
7198 {
7199 struct iwl4965_priv *priv = hw->priv;
7200
7201 IWL_DEBUG_MAC80211("enter\n");
7202
7203 if (priv->iw_mode == IEEE80211_IF_TYPE_MNTR) {
7204 IWL_DEBUG_MAC80211("leave - monitor\n");
7205 return -1;
7206 }
7207
7208 IWL_DEBUG_TX("dev->xmit(%d bytes) at rate 0x%02x\n", skb->len,
7209 ctl->tx_rate->bitrate);
7210
7211 if (iwl4965_tx_skb(priv, skb, ctl))
7212 dev_kfree_skb_any(skb);
7213
7214 IWL_DEBUG_MAC80211("leave\n");
7215 return 0;
7216 }
7217
7218 static int iwl4965_mac_add_interface(struct ieee80211_hw *hw,
7219 struct ieee80211_if_init_conf *conf)
7220 {
7221 struct iwl4965_priv *priv = hw->priv;
7222 unsigned long flags;
7223 DECLARE_MAC_BUF(mac);
7224
7225 IWL_DEBUG_MAC80211("enter: type %d\n", conf->type);
7226
7227 if (priv->vif) {
7228 IWL_DEBUG_MAC80211("leave - vif != NULL\n");
7229 return -EOPNOTSUPP;
7230 }
7231
7232 spin_lock_irqsave(&priv->lock, flags);
7233 priv->vif = conf->vif;
7234
7235 spin_unlock_irqrestore(&priv->lock, flags);
7236
7237 mutex_lock(&priv->mutex);
7238
7239 if (conf->mac_addr) {
7240 IWL_DEBUG_MAC80211("Set %s\n", print_mac(mac, conf->mac_addr));
7241 memcpy(priv->mac_addr, conf->mac_addr, ETH_ALEN);
7242 }
7243
7244 if (iwl4965_is_ready(priv))
7245 iwl4965_set_mode(priv, conf->type);
7246
7247 mutex_unlock(&priv->mutex);
7248
7249 IWL_DEBUG_MAC80211("leave\n");
7250 return 0;
7251 }
7252
7253 /**
7254 * iwl4965_mac_config - mac80211 config callback
7255 *
7256 * We ignore conf->flags & IEEE80211_CONF_SHORT_SLOT_TIME since it seems to
7257 * be set inappropriately and the driver currently sets the hardware up to
7258 * use it whenever needed.
7259 */
7260 static int iwl4965_mac_config(struct ieee80211_hw *hw, struct ieee80211_conf *conf)
7261 {
7262 struct iwl4965_priv *priv = hw->priv;
7263 const struct iwl4965_channel_info *ch_info;
7264 unsigned long flags;
7265 int ret = 0;
7266
7267 mutex_lock(&priv->mutex);
7268 IWL_DEBUG_MAC80211("enter to channel %d\n", conf->channel->hw_value);
7269
7270 priv->add_radiotap = !!(conf->flags & IEEE80211_CONF_RADIOTAP);
7271
7272 if (!iwl4965_is_ready(priv)) {
7273 IWL_DEBUG_MAC80211("leave - not ready\n");
7274 ret = -EIO;
7275 goto out;
7276 }
7277
7278 if (unlikely(!iwl4965_param_disable_hw_scan &&
7279 test_bit(STATUS_SCANNING, &priv->status))) {
7280 IWL_DEBUG_MAC80211("leave - scanning\n");
7281 set_bit(STATUS_CONF_PENDING, &priv->status);
7282 mutex_unlock(&priv->mutex);
7283 return 0;
7284 }
7285
7286 spin_lock_irqsave(&priv->lock, flags);
7287
7288 ch_info = iwl4965_get_channel_info(priv, conf->channel->band,
7289 ieee80211_frequency_to_channel(conf->channel->center_freq));
7290 if (!is_channel_valid(ch_info)) {
7291 IWL_DEBUG_MAC80211("leave - invalid channel\n");
7292 spin_unlock_irqrestore(&priv->lock, flags);
7293 ret = -EINVAL;
7294 goto out;
7295 }
7296
7297 #ifdef CONFIG_IWL4965_HT
7298 /* if we are switching from ht to 2.4 clear flags
7299 * from any ht related info since 2.4 does not
7300 * support ht */
7301 if ((le16_to_cpu(priv->staging_rxon.channel) != conf->channel->hw_value)
7302 #ifdef IEEE80211_CONF_CHANNEL_SWITCH
7303 && !(conf->flags & IEEE80211_CONF_CHANNEL_SWITCH)
7304 #endif
7305 )
7306 priv->staging_rxon.flags = 0;
7307 #endif /* CONFIG_IWL4965_HT */
7308
7309 iwl4965_set_rxon_channel(priv, conf->channel->band,
7310 ieee80211_frequency_to_channel(conf->channel->center_freq));
7311
7312 iwl4965_set_flags_for_phymode(priv, conf->channel->band);
7313
7314 /* The list of supported rates and rate mask can be different
7315 * for each band; since the band may have changed, reset
7316 * the rate mask to what mac80211 lists */
7317 iwl4965_set_rate(priv);
7318
7319 spin_unlock_irqrestore(&priv->lock, flags);
7320
7321 #ifdef IEEE80211_CONF_CHANNEL_SWITCH
7322 if (conf->flags & IEEE80211_CONF_CHANNEL_SWITCH) {
7323 iwl4965_hw_channel_switch(priv, conf->channel);
7324 goto out;
7325 }
7326 #endif
7327
7328 iwl4965_radio_kill_sw(priv, !conf->radio_enabled);
7329
7330 if (!conf->radio_enabled) {
7331 IWL_DEBUG_MAC80211("leave - radio disabled\n");
7332 goto out;
7333 }
7334
7335 if (iwl4965_is_rfkill(priv)) {
7336 IWL_DEBUG_MAC80211("leave - RF kill\n");
7337 ret = -EIO;
7338 goto out;
7339 }
7340
7341 iwl4965_set_rate(priv);
7342
7343 if (memcmp(&priv->active_rxon,
7344 &priv->staging_rxon, sizeof(priv->staging_rxon)))
7345 iwl4965_commit_rxon(priv);
7346 else
7347 IWL_DEBUG_INFO("No re-sending same RXON configuration.\n");
7348
7349 IWL_DEBUG_MAC80211("leave\n");
7350
7351 out:
7352 clear_bit(STATUS_CONF_PENDING, &priv->status);
7353 mutex_unlock(&priv->mutex);
7354 return ret;
7355 }
7356
7357 static void iwl4965_config_ap(struct iwl4965_priv *priv)
7358 {
7359 int rc = 0;
7360
7361 if (test_bit(STATUS_EXIT_PENDING, &priv->status))
7362 return;
7363
7364 /* The following should be done only at AP bring up */
7365 if ((priv->active_rxon.filter_flags & RXON_FILTER_ASSOC_MSK) == 0) {
7366
7367 /* RXON - unassoc (to set timing command) */
7368 priv->staging_rxon.filter_flags &= ~RXON_FILTER_ASSOC_MSK;
7369 iwl4965_commit_rxon(priv);
7370
7371 /* RXON Timing */
7372 memset(&priv->rxon_timing, 0, sizeof(struct iwl4965_rxon_time_cmd));
7373 iwl4965_setup_rxon_timing(priv);
7374 rc = iwl4965_send_cmd_pdu(priv, REPLY_RXON_TIMING,
7375 sizeof(priv->rxon_timing), &priv->rxon_timing);
7376 if (rc)
7377 IWL_WARNING("REPLY_RXON_TIMING failed - "
7378 "Attempting to continue.\n");
7379
7380 iwl4965_set_rxon_chain(priv);
7381
7382 /* FIXME: what should be the assoc_id for AP? */
7383 priv->staging_rxon.assoc_id = cpu_to_le16(priv->assoc_id);
7384 if (priv->assoc_capability & WLAN_CAPABILITY_SHORT_PREAMBLE)
7385 priv->staging_rxon.flags |=
7386 RXON_FLG_SHORT_PREAMBLE_MSK;
7387 else
7388 priv->staging_rxon.flags &=
7389 ~RXON_FLG_SHORT_PREAMBLE_MSK;
7390
7391 if (priv->staging_rxon.flags & RXON_FLG_BAND_24G_MSK) {
7392 if (priv->assoc_capability &
7393 WLAN_CAPABILITY_SHORT_SLOT_TIME)
7394 priv->staging_rxon.flags |=
7395 RXON_FLG_SHORT_SLOT_MSK;
7396 else
7397 priv->staging_rxon.flags &=
7398 ~RXON_FLG_SHORT_SLOT_MSK;
7399
7400 if (priv->iw_mode == IEEE80211_IF_TYPE_IBSS)
7401 priv->staging_rxon.flags &=
7402 ~RXON_FLG_SHORT_SLOT_MSK;
7403 }
7404 /* restore RXON assoc */
7405 priv->staging_rxon.filter_flags |= RXON_FILTER_ASSOC_MSK;
7406 iwl4965_commit_rxon(priv);
7407 iwl4965_activate_qos(priv, 1);
7408 iwl4965_rxon_add_station(priv, iwl4965_broadcast_addr, 0);
7409 }
7410 iwl4965_send_beacon_cmd(priv);
7411
7412 /* FIXME - we need to add code here to detect a totally new
7413 * configuration, reset the AP, unassoc, rxon timing, assoc,
7414 * clear sta table, add BCAST sta... */
7415 }
7416
7417 static int iwl4965_mac_config_interface(struct ieee80211_hw *hw,
7418 struct ieee80211_vif *vif,
7419 struct ieee80211_if_conf *conf)
7420 {
7421 struct iwl4965_priv *priv = hw->priv;
7422 DECLARE_MAC_BUF(mac);
7423 unsigned long flags;
7424 int rc;
7425
7426 if (conf == NULL)
7427 return -EIO;
7428
7429 if ((priv->iw_mode == IEEE80211_IF_TYPE_AP) &&
7430 (!conf->beacon || !conf->ssid_len)) {
7431 IWL_DEBUG_MAC80211
7432 ("Leaving in AP mode because HostAPD is not ready.\n");
7433 return 0;
7434 }
7435
7436 if (!iwl4965_is_alive(priv))
7437 return -EAGAIN;
7438
7439 mutex_lock(&priv->mutex);
7440
7441 if (conf->bssid)
7442 IWL_DEBUG_MAC80211("bssid: %s\n",
7443 print_mac(mac, conf->bssid));
7444
7445 /*
7446 * very dubious code was here; the probe filtering flag is never set:
7447 *
7448 if (unlikely(test_bit(STATUS_SCANNING, &priv->status)) &&
7449 !(priv->hw->flags & IEEE80211_HW_NO_PROBE_FILTERING)) {
7450 */
7451 if (unlikely(test_bit(STATUS_SCANNING, &priv->status))) {
7452 IWL_DEBUG_MAC80211("leave - scanning\n");
7453 mutex_unlock(&priv->mutex);
7454 return 0;
7455 }
7456
7457 if (priv->vif != vif) {
7458 IWL_DEBUG_MAC80211("leave - priv->vif != vif\n");
7459 mutex_unlock(&priv->mutex);
7460 return 0;
7461 }
7462
7463 if (priv->iw_mode == IEEE80211_IF_TYPE_AP) {
7464 if (!conf->bssid) {
7465 conf->bssid = priv->mac_addr;
7466 memcpy(priv->bssid, priv->mac_addr, ETH_ALEN);
7467 IWL_DEBUG_MAC80211("bssid was set to: %s\n",
7468 print_mac(mac, conf->bssid));
7469 }
7470 if (priv->ibss_beacon)
7471 dev_kfree_skb(priv->ibss_beacon);
7472
7473 priv->ibss_beacon = conf->beacon;
7474 }
7475
7476 if (iwl4965_is_rfkill(priv))
7477 goto done;
7478
7479 if (conf->bssid && !is_zero_ether_addr(conf->bssid) &&
7480 !is_multicast_ether_addr(conf->bssid)) {
7481 /* If there is currently a HW scan going on in the background
7482 * then we need to cancel it else the RXON below will fail. */
7483 if (iwl4965_scan_cancel_timeout(priv, 100)) {
7484 IWL_WARNING("Aborted scan still in progress "
7485 "after 100ms\n");
7486 IWL_DEBUG_MAC80211("leaving - scan abort failed.\n");
7487 mutex_unlock(&priv->mutex);
7488 return -EAGAIN;
7489 }
7490 memcpy(priv->staging_rxon.bssid_addr, conf->bssid, ETH_ALEN);
7491
7492 /* TODO: Audit driver for usage of these members and see
7493 * if mac80211 deprecates them (priv->bssid looks like it
7494 * shouldn't be there, but I haven't scanned the IBSS code
7495 * to verify) - jpk */
7496 memcpy(priv->bssid, conf->bssid, ETH_ALEN);
7497
7498 if (priv->iw_mode == IEEE80211_IF_TYPE_AP)
7499 iwl4965_config_ap(priv);
7500 else {
7501 rc = iwl4965_commit_rxon(priv);
7502 if ((priv->iw_mode == IEEE80211_IF_TYPE_STA) && rc)
7503 iwl4965_rxon_add_station(
7504 priv, priv->active_rxon.bssid_addr, 1);
7505 }
7506
7507 } else {
7508 iwl4965_scan_cancel_timeout(priv, 100);
7509 priv->staging_rxon.filter_flags &= ~RXON_FILTER_ASSOC_MSK;
7510 iwl4965_commit_rxon(priv);
7511 }
7512
7513 done:
7514 spin_lock_irqsave(&priv->lock, flags);
7515 if (!conf->ssid_len)
7516 memset(priv->essid, 0, IW_ESSID_MAX_SIZE);
7517 else
7518 memcpy(priv->essid, conf->ssid, conf->ssid_len);
7519
7520 priv->essid_len = conf->ssid_len;
7521 spin_unlock_irqrestore(&priv->lock, flags);
7522
7523 IWL_DEBUG_MAC80211("leave\n");
7524 mutex_unlock(&priv->mutex);
7525
7526 return 0;
7527 }
7528
7529 static void iwl4965_configure_filter(struct ieee80211_hw *hw,
7530 unsigned int changed_flags,
7531 unsigned int *total_flags,
7532 int mc_count, struct dev_addr_list *mc_list)
7533 {
7534 /*
7535 * XXX: dummy
7536 * see also iwl4965_connection_init_rx_config
7537 */
7538 *total_flags = 0;
7539 }
7540
7541 static void iwl4965_mac_remove_interface(struct ieee80211_hw *hw,
7542 struct ieee80211_if_init_conf *conf)
7543 {
7544 struct iwl4965_priv *priv = hw->priv;
7545
7546 IWL_DEBUG_MAC80211("enter\n");
7547
7548 mutex_lock(&priv->mutex);
7549
7550 if (iwl4965_is_ready_rf(priv)) {
7551 iwl4965_scan_cancel_timeout(priv, 100);
7552 cancel_delayed_work(&priv->post_associate);
7553 priv->staging_rxon.filter_flags &= ~RXON_FILTER_ASSOC_MSK;
7554 iwl4965_commit_rxon(priv);
7555 }
7556 if (priv->vif == conf->vif) {
7557 priv->vif = NULL;
7558 memset(priv->bssid, 0, ETH_ALEN);
7559 memset(priv->essid, 0, IW_ESSID_MAX_SIZE);
7560 priv->essid_len = 0;
7561 }
7562 mutex_unlock(&priv->mutex);
7563
7564 IWL_DEBUG_MAC80211("leave\n");
7565
7566 }
7567
7568 static void iwl4965_bss_info_changed(struct ieee80211_hw *hw,
7569 struct ieee80211_vif *vif,
7570 struct ieee80211_bss_conf *bss_conf,
7571 u32 changes)
7572 {
7573 struct iwl4965_priv *priv = hw->priv;
7574
7575 if (changes & BSS_CHANGED_ERP_PREAMBLE) {
7576 if (bss_conf->use_short_preamble)
7577 priv->staging_rxon.flags |= RXON_FLG_SHORT_PREAMBLE_MSK;
7578 else
7579 priv->staging_rxon.flags &= ~RXON_FLG_SHORT_PREAMBLE_MSK;
7580 }
7581
7582 if (changes & BSS_CHANGED_ERP_CTS_PROT) {
7583 if (bss_conf->use_cts_prot && (priv->band != IEEE80211_BAND_5GHZ))
7584 priv->staging_rxon.flags |= RXON_FLG_TGG_PROTECT_MSK;
7585 else
7586 priv->staging_rxon.flags &= ~RXON_FLG_TGG_PROTECT_MSK;
7587 }
7588
7589 if (changes & BSS_CHANGED_ASSOC) {
7590 /*
7591 * TODO:
7592 * do stuff instead of sniffing assoc resp
7593 */
7594 }
7595
7596 if (iwl4965_is_associated(priv))
7597 iwl4965_send_rxon_assoc(priv);
7598 }
7599
7600 static int iwl4965_mac_hw_scan(struct ieee80211_hw *hw, u8 *ssid, size_t len)
7601 {
7602 int rc = 0;
7603 unsigned long flags;
7604 struct iwl4965_priv *priv = hw->priv;
7605
7606 IWL_DEBUG_MAC80211("enter\n");
7607
7608 mutex_lock(&priv->mutex);
7609 spin_lock_irqsave(&priv->lock, flags);
7610
7611 if (!iwl4965_is_ready_rf(priv)) {
7612 rc = -EIO;
7613 IWL_DEBUG_MAC80211("leave - not ready or exit pending\n");
7614 goto out_unlock;
7615 }
7616
7617 if (priv->iw_mode == IEEE80211_IF_TYPE_AP) { /* APs don't scan */
7618 rc = -EIO;
7619 IWL_ERROR("ERROR: APs don't scan\n");
7620 goto out_unlock;
7621 }
7622
7623 /* we don't schedule scan within next_scan_jiffies period */
7624 if (priv->next_scan_jiffies &&
7625 time_after(priv->next_scan_jiffies, jiffies)) {
7626 rc = -EAGAIN;
7627 goto out_unlock;
7628 }
7629 /* if we just finished scan ask for delay */
7630 if (priv->last_scan_jiffies && time_after(priv->last_scan_jiffies +
7631 IWL_DELAY_NEXT_SCAN, jiffies)) {
7632 rc = -EAGAIN;
7633 goto out_unlock;
7634 }
7635 if (len) {
7636 IWL_DEBUG_SCAN("direct scan for %s [%d]\n ",
7637 iwl4965_escape_essid(ssid, len), (int)len);
7638
7639 priv->one_direct_scan = 1;
7640 priv->direct_ssid_len = (u8)
7641 min((u8) len, (u8) IW_ESSID_MAX_SIZE);
7642 memcpy(priv->direct_ssid, ssid, priv->direct_ssid_len);
7643 } else
7644 priv->one_direct_scan = 0;
7645
7646 rc = iwl4965_scan_initiate(priv);
7647
7648 IWL_DEBUG_MAC80211("leave\n");
7649
7650 out_unlock:
7651 spin_unlock_irqrestore(&priv->lock, flags);
7652 mutex_unlock(&priv->mutex);
7653
7654 return rc;
7655 }
7656
7657 static int iwl4965_mac_set_key(struct ieee80211_hw *hw, enum set_key_cmd cmd,
7658 const u8 *local_addr, const u8 *addr,
7659 struct ieee80211_key_conf *key)
7660 {
7661 struct iwl4965_priv *priv = hw->priv;
7662 DECLARE_MAC_BUF(mac);
7663 int rc = 0;
7664 u8 sta_id;
7665
7666 IWL_DEBUG_MAC80211("enter\n");
7667
7668 if (!iwl4965_param_hwcrypto) {
7669 IWL_DEBUG_MAC80211("leave - hwcrypto disabled\n");
7670 return -EOPNOTSUPP;
7671 }
7672
7673 if (is_zero_ether_addr(addr))
7674 /* only support pairwise keys */
7675 return -EOPNOTSUPP;
7676
7677 sta_id = iwl4965_hw_find_station(priv, addr);
7678 if (sta_id == IWL_INVALID_STATION) {
7679 IWL_DEBUG_MAC80211("leave - %s not in station map.\n",
7680 print_mac(mac, addr));
7681 return -EINVAL;
7682 }
7683
7684 mutex_lock(&priv->mutex);
7685
7686 iwl4965_scan_cancel_timeout(priv, 100);
7687
7688 switch (cmd) {
7689 case SET_KEY:
7690 rc = iwl4965_update_sta_key_info(priv, key, sta_id);
7691 if (!rc) {
7692 iwl4965_set_rxon_hwcrypto(priv, 1);
7693 iwl4965_commit_rxon(priv);
7694 key->hw_key_idx = sta_id;
7695 IWL_DEBUG_MAC80211("set_key success, using hwcrypto\n");
7696 key->flags |= IEEE80211_KEY_FLAG_GENERATE_IV;
7697 }
7698 break;
7699 case DISABLE_KEY:
7700 rc = iwl4965_clear_sta_key_info(priv, sta_id);
7701 if (!rc) {
7702 iwl4965_set_rxon_hwcrypto(priv, 0);
7703 iwl4965_commit_rxon(priv);
7704 IWL_DEBUG_MAC80211("disable hwcrypto key\n");
7705 }
7706 break;
7707 default:
7708 rc = -EINVAL;
7709 }
7710
7711 IWL_DEBUG_MAC80211("leave\n");
7712 mutex_unlock(&priv->mutex);
7713
7714 return rc;
7715 }
7716
7717 static int iwl4965_mac_conf_tx(struct ieee80211_hw *hw, int queue,
7718 const struct ieee80211_tx_queue_params *params)
7719 {
7720 struct iwl4965_priv *priv = hw->priv;
7721 unsigned long flags;
7722 int q;
7723
7724 IWL_DEBUG_MAC80211("enter\n");
7725
7726 if (!iwl4965_is_ready_rf(priv)) {
7727 IWL_DEBUG_MAC80211("leave - RF not ready\n");
7728 return -EIO;
7729 }
7730
7731 if (queue >= AC_NUM) {
7732 IWL_DEBUG_MAC80211("leave - queue >= AC_NUM %d\n", queue);
7733 return 0;
7734 }
7735
7736 if (!priv->qos_data.qos_enable) {
7737 priv->qos_data.qos_active = 0;
7738 IWL_DEBUG_MAC80211("leave - qos not enabled\n");
7739 return 0;
7740 }
7741 q = AC_NUM - 1 - queue;
7742
7743 spin_lock_irqsave(&priv->lock, flags);
7744
7745 priv->qos_data.def_qos_parm.ac[q].cw_min = cpu_to_le16(params->cw_min);
7746 priv->qos_data.def_qos_parm.ac[q].cw_max = cpu_to_le16(params->cw_max);
7747 priv->qos_data.def_qos_parm.ac[q].aifsn = params->aifs;
7748 priv->qos_data.def_qos_parm.ac[q].edca_txop =
7749 cpu_to_le16((params->txop * 32));
7750
7751 priv->qos_data.def_qos_parm.ac[q].reserved1 = 0;
7752 priv->qos_data.qos_active = 1;
7753
7754 spin_unlock_irqrestore(&priv->lock, flags);
7755
7756 mutex_lock(&priv->mutex);
7757 if (priv->iw_mode == IEEE80211_IF_TYPE_AP)
7758 iwl4965_activate_qos(priv, 1);
7759 else if (priv->assoc_id && iwl4965_is_associated(priv))
7760 iwl4965_activate_qos(priv, 0);
7761
7762 mutex_unlock(&priv->mutex);
7763
7764 IWL_DEBUG_MAC80211("leave\n");
7765 return 0;
7766 }
7767
7768 static int iwl4965_mac_get_tx_stats(struct ieee80211_hw *hw,
7769 struct ieee80211_tx_queue_stats *stats)
7770 {
7771 struct iwl4965_priv *priv = hw->priv;
7772 int i, avail;
7773 struct iwl4965_tx_queue *txq;
7774 struct iwl4965_queue *q;
7775 unsigned long flags;
7776
7777 IWL_DEBUG_MAC80211("enter\n");
7778
7779 if (!iwl4965_is_ready_rf(priv)) {
7780 IWL_DEBUG_MAC80211("leave - RF not ready\n");
7781 return -EIO;
7782 }
7783
7784 spin_lock_irqsave(&priv->lock, flags);
7785
7786 for (i = 0; i < AC_NUM; i++) {
7787 txq = &priv->txq[i];
7788 q = &txq->q;
7789 avail = iwl4965_queue_space(q);
7790
7791 stats->data[i].len = q->n_window - avail;
7792 stats->data[i].limit = q->n_window - q->high_mark;
7793 stats->data[i].count = q->n_window;
7794
7795 }
7796 spin_unlock_irqrestore(&priv->lock, flags);
7797
7798 IWL_DEBUG_MAC80211("leave\n");
7799
7800 return 0;
7801 }
7802
7803 static int iwl4965_mac_get_stats(struct ieee80211_hw *hw,
7804 struct ieee80211_low_level_stats *stats)
7805 {
7806 IWL_DEBUG_MAC80211("enter\n");
7807 IWL_DEBUG_MAC80211("leave\n");
7808
7809 return 0;
7810 }
7811
7812 static u64 iwl4965_mac_get_tsf(struct ieee80211_hw *hw)
7813 {
7814 IWL_DEBUG_MAC80211("enter\n");
7815 IWL_DEBUG_MAC80211("leave\n");
7816
7817 return 0;
7818 }
7819
7820 static void iwl4965_mac_reset_tsf(struct ieee80211_hw *hw)
7821 {
7822 struct iwl4965_priv *priv = hw->priv;
7823 unsigned long flags;
7824
7825 mutex_lock(&priv->mutex);
7826 IWL_DEBUG_MAC80211("enter\n");
7827
7828 priv->lq_mngr.lq_ready = 0;
7829 #ifdef CONFIG_IWL4965_HT
7830 spin_lock_irqsave(&priv->lock, flags);
7831 memset(&priv->current_ht_config, 0, sizeof(struct iwl_ht_info));
7832 spin_unlock_irqrestore(&priv->lock, flags);
7833 #endif /* CONFIG_IWL4965_HT */
7834
7835 iwl4965_reset_qos(priv);
7836
7837 cancel_delayed_work(&priv->post_associate);
7838
7839 spin_lock_irqsave(&priv->lock, flags);
7840 priv->assoc_id = 0;
7841 priv->assoc_capability = 0;
7842 priv->call_post_assoc_from_beacon = 0;
7843 priv->assoc_station_added = 0;
7844
7845 /* new association get rid of ibss beacon skb */
7846 if (priv->ibss_beacon)
7847 dev_kfree_skb(priv->ibss_beacon);
7848
7849 priv->ibss_beacon = NULL;
7850
7851 priv->beacon_int = priv->hw->conf.beacon_int;
7852 priv->timestamp1 = 0;
7853 priv->timestamp0 = 0;
7854 if ((priv->iw_mode == IEEE80211_IF_TYPE_STA))
7855 priv->beacon_int = 0;
7856
7857 spin_unlock_irqrestore(&priv->lock, flags);
7858
7859 if (!iwl4965_is_ready_rf(priv)) {
7860 IWL_DEBUG_MAC80211("leave - not ready\n");
7861 mutex_unlock(&priv->mutex);
7862 return;
7863 }
7864
7865 /* we are restarting association process
7866 * clear RXON_FILTER_ASSOC_MSK bit
7867 */
7868 if (priv->iw_mode != IEEE80211_IF_TYPE_AP) {
7869 iwl4965_scan_cancel_timeout(priv, 100);
7870 priv->staging_rxon.filter_flags &= ~RXON_FILTER_ASSOC_MSK;
7871 iwl4965_commit_rxon(priv);
7872 }
7873
7874 /* Per mac80211.h: This is only used in IBSS mode... */
7875 if (priv->iw_mode != IEEE80211_IF_TYPE_IBSS) {
7876
7877 IWL_DEBUG_MAC80211("leave - not in IBSS\n");
7878 mutex_unlock(&priv->mutex);
7879 return;
7880 }
7881
7882 priv->only_active_channel = 0;
7883
7884 iwl4965_set_rate(priv);
7885
7886 mutex_unlock(&priv->mutex);
7887
7888 IWL_DEBUG_MAC80211("leave\n");
7889 }
7890
7891 static int iwl4965_mac_beacon_update(struct ieee80211_hw *hw, struct sk_buff *skb,
7892 struct ieee80211_tx_control *control)
7893 {
7894 struct iwl4965_priv *priv = hw->priv;
7895 unsigned long flags;
7896
7897 mutex_lock(&priv->mutex);
7898 IWL_DEBUG_MAC80211("enter\n");
7899
7900 if (!iwl4965_is_ready_rf(priv)) {
7901 IWL_DEBUG_MAC80211("leave - RF not ready\n");
7902 mutex_unlock(&priv->mutex);
7903 return -EIO;
7904 }
7905
7906 if (priv->iw_mode != IEEE80211_IF_TYPE_IBSS) {
7907 IWL_DEBUG_MAC80211("leave - not IBSS\n");
7908 mutex_unlock(&priv->mutex);
7909 return -EIO;
7910 }
7911
7912 spin_lock_irqsave(&priv->lock, flags);
7913
7914 if (priv->ibss_beacon)
7915 dev_kfree_skb(priv->ibss_beacon);
7916
7917 priv->ibss_beacon = skb;
7918
7919 priv->assoc_id = 0;
7920
7921 IWL_DEBUG_MAC80211("leave\n");
7922 spin_unlock_irqrestore(&priv->lock, flags);
7923
7924 iwl4965_reset_qos(priv);
7925
7926 queue_work(priv->workqueue, &priv->post_associate.work);
7927
7928 mutex_unlock(&priv->mutex);
7929
7930 return 0;
7931 }
7932
7933 #ifdef CONFIG_IWL4965_HT
7934
7935 static void iwl4965_ht_info_fill(struct ieee80211_conf *conf,
7936 struct iwl4965_priv *priv)
7937 {
7938 struct iwl_ht_info *iwl_conf = &priv->current_ht_config;
7939 struct ieee80211_ht_info *ht_conf = &conf->ht_conf;
7940 struct ieee80211_ht_bss_info *ht_bss_conf = &conf->ht_bss_conf;
7941
7942 IWL_DEBUG_MAC80211("enter: \n");
7943
7944 if (!(conf->flags & IEEE80211_CONF_SUPPORT_HT_MODE)) {
7945 iwl_conf->is_ht = 0;
7946 return;
7947 }
7948
7949 iwl_conf->is_ht = 1;
7950 priv->ps_mode = (u8)((ht_conf->cap & IEEE80211_HT_CAP_MIMO_PS) >> 2);
7951
7952 if (ht_conf->cap & IEEE80211_HT_CAP_SGI_20)
7953 iwl_conf->sgf |= 0x1;
7954 if (ht_conf->cap & IEEE80211_HT_CAP_SGI_40)
7955 iwl_conf->sgf |= 0x2;
7956
7957 iwl_conf->is_green_field = !!(ht_conf->cap & IEEE80211_HT_CAP_GRN_FLD);
7958 iwl_conf->max_amsdu_size =
7959 !!(ht_conf->cap & IEEE80211_HT_CAP_MAX_AMSDU);
7960
7961 iwl_conf->supported_chan_width =
7962 !!(ht_conf->cap & IEEE80211_HT_CAP_SUP_WIDTH);
7963 iwl_conf->extension_chan_offset =
7964 ht_bss_conf->bss_cap & IEEE80211_HT_IE_CHA_SEC_OFFSET;
7965 /* If no above or below channel supplied disable FAT channel */
7966 if (iwl_conf->extension_chan_offset != IWL_EXT_CHANNEL_OFFSET_ABOVE &&
7967 iwl_conf->extension_chan_offset != IWL_EXT_CHANNEL_OFFSET_BELOW)
7968 iwl_conf->supported_chan_width = 0;
7969
7970 iwl_conf->tx_mimo_ps_mode =
7971 (u8)((ht_conf->cap & IEEE80211_HT_CAP_MIMO_PS) >> 2);
7972 memcpy(iwl_conf->supp_mcs_set, ht_conf->supp_mcs_set, 16);
7973
7974 iwl_conf->control_channel = ht_bss_conf->primary_channel;
7975 iwl_conf->tx_chan_width =
7976 !!(ht_bss_conf->bss_cap & IEEE80211_HT_IE_CHA_WIDTH);
7977 iwl_conf->ht_protection =
7978 ht_bss_conf->bss_op_mode & IEEE80211_HT_IE_HT_PROTECTION;
7979 iwl_conf->non_GF_STA_present =
7980 !!(ht_bss_conf->bss_op_mode & IEEE80211_HT_IE_NON_GF_STA_PRSNT);
7981
7982 IWL_DEBUG_MAC80211("control channel %d\n",
7983 iwl_conf->control_channel);
7984 IWL_DEBUG_MAC80211("leave\n");
7985 }
7986
7987 static int iwl4965_mac_conf_ht(struct ieee80211_hw *hw,
7988 struct ieee80211_conf *conf)
7989 {
7990 struct iwl4965_priv *priv = hw->priv;
7991
7992 IWL_DEBUG_MAC80211("enter: \n");
7993
7994 iwl4965_ht_info_fill(conf, priv);
7995 iwl4965_set_rxon_chain(priv);
7996
7997 if (priv && priv->assoc_id &&
7998 (priv->iw_mode == IEEE80211_IF_TYPE_STA)) {
7999 unsigned long flags;
8000
8001 spin_lock_irqsave(&priv->lock, flags);
8002 if (priv->beacon_int)
8003 queue_work(priv->workqueue, &priv->post_associate.work);
8004 else
8005 priv->call_post_assoc_from_beacon = 1;
8006 spin_unlock_irqrestore(&priv->lock, flags);
8007 }
8008
8009 IWL_DEBUG_MAC80211("leave:\n");
8010 return 0;
8011 }
8012
8013 #endif /*CONFIG_IWL4965_HT*/
8014
8015 /*****************************************************************************
8016 *
8017 * sysfs attributes
8018 *
8019 *****************************************************************************/
8020
8021 #ifdef CONFIG_IWL4965_DEBUG
8022
8023 /*
8024 * The following adds a new attribute to the sysfs representation
8025 * of this device driver (i.e. a new file in /sys/bus/pci/drivers/iwl/)
8026 * used for controlling the debug level.
8027 *
8028 * See the level definitions in iwl for details.
8029 */
8030
8031 static ssize_t show_debug_level(struct device_driver *d, char *buf)
8032 {
8033 return sprintf(buf, "0x%08X\n", iwl4965_debug_level);
8034 }
8035 static ssize_t store_debug_level(struct device_driver *d,
8036 const char *buf, size_t count)
8037 {
8038 char *p = (char *)buf;
8039 u32 val;
8040
8041 val = simple_strtoul(p, &p, 0);
8042 if (p == buf)
8043 printk(KERN_INFO DRV_NAME
8044 ": %s is not in hex or decimal form.\n", buf);
8045 else
8046 iwl4965_debug_level = val;
8047
8048 return strnlen(buf, count);
8049 }
8050
8051 static DRIVER_ATTR(debug_level, S_IWUSR | S_IRUGO,
8052 show_debug_level, store_debug_level);
8053
8054 #endif /* CONFIG_IWL4965_DEBUG */
8055
8056 static ssize_t show_rf_kill(struct device *d,
8057 struct device_attribute *attr, char *buf)
8058 {
8059 /*
8060 * 0 - RF kill not enabled
8061 * 1 - SW based RF kill active (sysfs)
8062 * 2 - HW based RF kill active
8063 * 3 - Both HW and SW based RF kill active
8064 */
8065 struct iwl4965_priv *priv = (struct iwl4965_priv *)d->driver_data;
8066 int val = (test_bit(STATUS_RF_KILL_SW, &priv->status) ? 0x1 : 0x0) |
8067 (test_bit(STATUS_RF_KILL_HW, &priv->status) ? 0x2 : 0x0);
8068
8069 return sprintf(buf, "%i\n", val);
8070 }
8071
8072 static ssize_t store_rf_kill(struct device *d,
8073 struct device_attribute *attr,
8074 const char *buf, size_t count)
8075 {
8076 struct iwl4965_priv *priv = (struct iwl4965_priv *)d->driver_data;
8077
8078 mutex_lock(&priv->mutex);
8079 iwl4965_radio_kill_sw(priv, buf[0] == '1');
8080 mutex_unlock(&priv->mutex);
8081
8082 return count;
8083 }
8084
8085 static DEVICE_ATTR(rf_kill, S_IWUSR | S_IRUGO, show_rf_kill, store_rf_kill);
8086
8087 static ssize_t show_temperature(struct device *d,
8088 struct device_attribute *attr, char *buf)
8089 {
8090 struct iwl4965_priv *priv = (struct iwl4965_priv *)d->driver_data;
8091
8092 if (!iwl4965_is_alive(priv))
8093 return -EAGAIN;
8094
8095 return sprintf(buf, "%d\n", iwl4965_hw_get_temperature(priv));
8096 }
8097
8098 static DEVICE_ATTR(temperature, S_IRUGO, show_temperature, NULL);
8099
8100 static ssize_t show_rs_window(struct device *d,
8101 struct device_attribute *attr,
8102 char *buf)
8103 {
8104 struct iwl4965_priv *priv = d->driver_data;
8105 return iwl4965_fill_rs_info(priv->hw, buf, IWL_AP_ID);
8106 }
8107 static DEVICE_ATTR(rs_window, S_IRUGO, show_rs_window, NULL);
8108
8109 static ssize_t show_tx_power(struct device *d,
8110 struct device_attribute *attr, char *buf)
8111 {
8112 struct iwl4965_priv *priv = (struct iwl4965_priv *)d->driver_data;
8113 return sprintf(buf, "%d\n", priv->user_txpower_limit);
8114 }
8115
8116 static ssize_t store_tx_power(struct device *d,
8117 struct device_attribute *attr,
8118 const char *buf, size_t count)
8119 {
8120 struct iwl4965_priv *priv = (struct iwl4965_priv *)d->driver_data;
8121 char *p = (char *)buf;
8122 u32 val;
8123
8124 val = simple_strtoul(p, &p, 10);
8125 if (p == buf)
8126 printk(KERN_INFO DRV_NAME
8127 ": %s is not in decimal form.\n", buf);
8128 else
8129 iwl4965_hw_reg_set_txpower(priv, val);
8130
8131 return count;
8132 }
8133
8134 static DEVICE_ATTR(tx_power, S_IWUSR | S_IRUGO, show_tx_power, store_tx_power);
8135
8136 static ssize_t show_flags(struct device *d,
8137 struct device_attribute *attr, char *buf)
8138 {
8139 struct iwl4965_priv *priv = (struct iwl4965_priv *)d->driver_data;
8140
8141 return sprintf(buf, "0x%04X\n", priv->active_rxon.flags);
8142 }
8143
8144 static ssize_t store_flags(struct device *d,
8145 struct device_attribute *attr,
8146 const char *buf, size_t count)
8147 {
8148 struct iwl4965_priv *priv = (struct iwl4965_priv *)d->driver_data;
8149 u32 flags = simple_strtoul(buf, NULL, 0);
8150
8151 mutex_lock(&priv->mutex);
8152 if (le32_to_cpu(priv->staging_rxon.flags) != flags) {
8153 /* Cancel any currently running scans... */
8154 if (iwl4965_scan_cancel_timeout(priv, 100))
8155 IWL_WARNING("Could not cancel scan.\n");
8156 else {
8157 IWL_DEBUG_INFO("Committing rxon.flags = 0x%04X\n",
8158 flags);
8159 priv->staging_rxon.flags = cpu_to_le32(flags);
8160 iwl4965_commit_rxon(priv);
8161 }
8162 }
8163 mutex_unlock(&priv->mutex);
8164
8165 return count;
8166 }
8167
8168 static DEVICE_ATTR(flags, S_IWUSR | S_IRUGO, show_flags, store_flags);
8169
8170 static ssize_t show_filter_flags(struct device *d,
8171 struct device_attribute *attr, char *buf)
8172 {
8173 struct iwl4965_priv *priv = (struct iwl4965_priv *)d->driver_data;
8174
8175 return sprintf(buf, "0x%04X\n",
8176 le32_to_cpu(priv->active_rxon.filter_flags));
8177 }
8178
8179 static ssize_t store_filter_flags(struct device *d,
8180 struct device_attribute *attr,
8181 const char *buf, size_t count)
8182 {
8183 struct iwl4965_priv *priv = (struct iwl4965_priv *)d->driver_data;
8184 u32 filter_flags = simple_strtoul(buf, NULL, 0);
8185
8186 mutex_lock(&priv->mutex);
8187 if (le32_to_cpu(priv->staging_rxon.filter_flags) != filter_flags) {
8188 /* Cancel any currently running scans... */
8189 if (iwl4965_scan_cancel_timeout(priv, 100))
8190 IWL_WARNING("Could not cancel scan.\n");
8191 else {
8192 IWL_DEBUG_INFO("Committing rxon.filter_flags = "
8193 "0x%04X\n", filter_flags);
8194 priv->staging_rxon.filter_flags =
8195 cpu_to_le32(filter_flags);
8196 iwl4965_commit_rxon(priv);
8197 }
8198 }
8199 mutex_unlock(&priv->mutex);
8200
8201 return count;
8202 }
8203
8204 static DEVICE_ATTR(filter_flags, S_IWUSR | S_IRUGO, show_filter_flags,
8205 store_filter_flags);
8206
8207 #ifdef CONFIG_IWL4965_SPECTRUM_MEASUREMENT
8208
8209 static ssize_t show_measurement(struct device *d,
8210 struct device_attribute *attr, char *buf)
8211 {
8212 struct iwl4965_priv *priv = dev_get_drvdata(d);
8213 struct iwl4965_spectrum_notification measure_report;
8214 u32 size = sizeof(measure_report), len = 0, ofs = 0;
8215 u8 *data = (u8 *) & measure_report;
8216 unsigned long flags;
8217
8218 spin_lock_irqsave(&priv->lock, flags);
8219 if (!(priv->measurement_status & MEASUREMENT_READY)) {
8220 spin_unlock_irqrestore(&priv->lock, flags);
8221 return 0;
8222 }
8223 memcpy(&measure_report, &priv->measure_report, size);
8224 priv->measurement_status = 0;
8225 spin_unlock_irqrestore(&priv->lock, flags);
8226
8227 while (size && (PAGE_SIZE - len)) {
8228 hex_dump_to_buffer(data + ofs, size, 16, 1, buf + len,
8229 PAGE_SIZE - len, 1);
8230 len = strlen(buf);
8231 if (PAGE_SIZE - len)
8232 buf[len++] = '\n';
8233
8234 ofs += 16;
8235 size -= min(size, 16U);
8236 }
8237
8238 return len;
8239 }
8240
8241 static ssize_t store_measurement(struct device *d,
8242 struct device_attribute *attr,
8243 const char *buf, size_t count)
8244 {
8245 struct iwl4965_priv *priv = dev_get_drvdata(d);
8246 struct ieee80211_measurement_params params = {
8247 .channel = le16_to_cpu(priv->active_rxon.channel),
8248 .start_time = cpu_to_le64(priv->last_tsf),
8249 .duration = cpu_to_le16(1),
8250 };
8251 u8 type = IWL_MEASURE_BASIC;
8252 u8 buffer[32];
8253 u8 channel;
8254
8255 if (count) {
8256 char *p = buffer;
8257 strncpy(buffer, buf, min(sizeof(buffer), count));
8258 channel = simple_strtoul(p, NULL, 0);
8259 if (channel)
8260 params.channel = channel;
8261
8262 p = buffer;
8263 while (*p && *p != ' ')
8264 p++;
8265 if (*p)
8266 type = simple_strtoul(p + 1, NULL, 0);
8267 }
8268
8269 IWL_DEBUG_INFO("Invoking measurement of type %d on "
8270 "channel %d (for '%s')\n", type, params.channel, buf);
8271 iwl4965_get_measurement(priv, &params, type);
8272
8273 return count;
8274 }
8275
8276 static DEVICE_ATTR(measurement, S_IRUSR | S_IWUSR,
8277 show_measurement, store_measurement);
8278 #endif /* CONFIG_IWL4965_SPECTRUM_MEASUREMENT */
8279
8280 static ssize_t store_retry_rate(struct device *d,
8281 struct device_attribute *attr,
8282 const char *buf, size_t count)
8283 {
8284 struct iwl4965_priv *priv = dev_get_drvdata(d);
8285
8286 priv->retry_rate = simple_strtoul(buf, NULL, 0);
8287 if (priv->retry_rate <= 0)
8288 priv->retry_rate = 1;
8289
8290 return count;
8291 }
8292
8293 static ssize_t show_retry_rate(struct device *d,
8294 struct device_attribute *attr, char *buf)
8295 {
8296 struct iwl4965_priv *priv = dev_get_drvdata(d);
8297 return sprintf(buf, "%d", priv->retry_rate);
8298 }
8299
8300 static DEVICE_ATTR(retry_rate, S_IWUSR | S_IRUSR, show_retry_rate,
8301 store_retry_rate);
8302
8303 static ssize_t store_power_level(struct device *d,
8304 struct device_attribute *attr,
8305 const char *buf, size_t count)
8306 {
8307 struct iwl4965_priv *priv = dev_get_drvdata(d);
8308 int rc;
8309 int mode;
8310
8311 mode = simple_strtoul(buf, NULL, 0);
8312 mutex_lock(&priv->mutex);
8313
8314 if (!iwl4965_is_ready(priv)) {
8315 rc = -EAGAIN;
8316 goto out;
8317 }
8318
8319 if ((mode < 1) || (mode > IWL_POWER_LIMIT) || (mode == IWL_POWER_AC))
8320 mode = IWL_POWER_AC;
8321 else
8322 mode |= IWL_POWER_ENABLED;
8323
8324 if (mode != priv->power_mode) {
8325 rc = iwl4965_send_power_mode(priv, IWL_POWER_LEVEL(mode));
8326 if (rc) {
8327 IWL_DEBUG_MAC80211("failed setting power mode.\n");
8328 goto out;
8329 }
8330 priv->power_mode = mode;
8331 }
8332
8333 rc = count;
8334
8335 out:
8336 mutex_unlock(&priv->mutex);
8337 return rc;
8338 }
8339
8340 #define MAX_WX_STRING 80
8341
8342 /* Values are in microsecond */
8343 static const s32 timeout_duration[] = {
8344 350000,
8345 250000,
8346 75000,
8347 37000,
8348 25000,
8349 };
8350 static const s32 period_duration[] = {
8351 400000,
8352 700000,
8353 1000000,
8354 1000000,
8355 1000000
8356 };
8357
8358 static ssize_t show_power_level(struct device *d,
8359 struct device_attribute *attr, char *buf)
8360 {
8361 struct iwl4965_priv *priv = dev_get_drvdata(d);
8362 int level = IWL_POWER_LEVEL(priv->power_mode);
8363 char *p = buf;
8364
8365 p += sprintf(p, "%d ", level);
8366 switch (level) {
8367 case IWL_POWER_MODE_CAM:
8368 case IWL_POWER_AC:
8369 p += sprintf(p, "(AC)");
8370 break;
8371 case IWL_POWER_BATTERY:
8372 p += sprintf(p, "(BATTERY)");
8373 break;
8374 default:
8375 p += sprintf(p,
8376 "(Timeout %dms, Period %dms)",
8377 timeout_duration[level - 1] / 1000,
8378 period_duration[level - 1] / 1000);
8379 }
8380
8381 if (!(priv->power_mode & IWL_POWER_ENABLED))
8382 p += sprintf(p, " OFF\n");
8383 else
8384 p += sprintf(p, " \n");
8385
8386 return (p - buf + 1);
8387
8388 }
8389
8390 static DEVICE_ATTR(power_level, S_IWUSR | S_IRUSR, show_power_level,
8391 store_power_level);
8392
8393 static ssize_t show_channels(struct device *d,
8394 struct device_attribute *attr, char *buf)
8395 {
8396 /* all this shit doesn't belong into sysfs anyway */
8397 return 0;
8398 }
8399
8400 static DEVICE_ATTR(channels, S_IRUSR, show_channels, NULL);
8401
8402 static ssize_t show_statistics(struct device *d,
8403 struct device_attribute *attr, char *buf)
8404 {
8405 struct iwl4965_priv *priv = dev_get_drvdata(d);
8406 u32 size = sizeof(struct iwl4965_notif_statistics);
8407 u32 len = 0, ofs = 0;
8408 u8 *data = (u8 *) & priv->statistics;
8409 int rc = 0;
8410
8411 if (!iwl4965_is_alive(priv))
8412 return -EAGAIN;
8413
8414 mutex_lock(&priv->mutex);
8415 rc = iwl4965_send_statistics_request(priv);
8416 mutex_unlock(&priv->mutex);
8417
8418 if (rc) {
8419 len = sprintf(buf,
8420 "Error sending statistics request: 0x%08X\n", rc);
8421 return len;
8422 }
8423
8424 while (size && (PAGE_SIZE - len)) {
8425 hex_dump_to_buffer(data + ofs, size, 16, 1, buf + len,
8426 PAGE_SIZE - len, 1);
8427 len = strlen(buf);
8428 if (PAGE_SIZE - len)
8429 buf[len++] = '\n';
8430
8431 ofs += 16;
8432 size -= min(size, 16U);
8433 }
8434
8435 return len;
8436 }
8437
8438 static DEVICE_ATTR(statistics, S_IRUGO, show_statistics, NULL);
8439
8440 static ssize_t show_antenna(struct device *d,
8441 struct device_attribute *attr, char *buf)
8442 {
8443 struct iwl4965_priv *priv = dev_get_drvdata(d);
8444
8445 if (!iwl4965_is_alive(priv))
8446 return -EAGAIN;
8447
8448 return sprintf(buf, "%d\n", priv->antenna);
8449 }
8450
8451 static ssize_t store_antenna(struct device *d,
8452 struct device_attribute *attr,
8453 const char *buf, size_t count)
8454 {
8455 int ant;
8456 struct iwl4965_priv *priv = dev_get_drvdata(d);
8457
8458 if (count == 0)
8459 return 0;
8460
8461 if (sscanf(buf, "%1i", &ant) != 1) {
8462 IWL_DEBUG_INFO("not in hex or decimal form.\n");
8463 return count;
8464 }
8465
8466 if ((ant >= 0) && (ant <= 2)) {
8467 IWL_DEBUG_INFO("Setting antenna select to %d.\n", ant);
8468 priv->antenna = (enum iwl4965_antenna)ant;
8469 } else
8470 IWL_DEBUG_INFO("Bad antenna select value %d.\n", ant);
8471
8472
8473 return count;
8474 }
8475
8476 static DEVICE_ATTR(antenna, S_IWUSR | S_IRUGO, show_antenna, store_antenna);
8477
8478 static ssize_t show_status(struct device *d,
8479 struct device_attribute *attr, char *buf)
8480 {
8481 struct iwl4965_priv *priv = (struct iwl4965_priv *)d->driver_data;
8482 if (!iwl4965_is_alive(priv))
8483 return -EAGAIN;
8484 return sprintf(buf, "0x%08x\n", (int)priv->status);
8485 }
8486
8487 static DEVICE_ATTR(status, S_IRUGO, show_status, NULL);
8488
8489 static ssize_t dump_error_log(struct device *d,
8490 struct device_attribute *attr,
8491 const char *buf, size_t count)
8492 {
8493 char *p = (char *)buf;
8494
8495 if (p[0] == '1')
8496 iwl4965_dump_nic_error_log((struct iwl4965_priv *)d->driver_data);
8497
8498 return strnlen(buf, count);
8499 }
8500
8501 static DEVICE_ATTR(dump_errors, S_IWUSR, NULL, dump_error_log);
8502
8503 static ssize_t dump_event_log(struct device *d,
8504 struct device_attribute *attr,
8505 const char *buf, size_t count)
8506 {
8507 char *p = (char *)buf;
8508
8509 if (p[0] == '1')
8510 iwl4965_dump_nic_event_log((struct iwl4965_priv *)d->driver_data);
8511
8512 return strnlen(buf, count);
8513 }
8514
8515 static DEVICE_ATTR(dump_events, S_IWUSR, NULL, dump_event_log);
8516
8517 /*****************************************************************************
8518 *
8519 * driver setup and teardown
8520 *
8521 *****************************************************************************/
8522
8523 static void iwl4965_setup_deferred_work(struct iwl4965_priv *priv)
8524 {
8525 priv->workqueue = create_workqueue(DRV_NAME);
8526
8527 init_waitqueue_head(&priv->wait_command_queue);
8528
8529 INIT_WORK(&priv->up, iwl4965_bg_up);
8530 INIT_WORK(&priv->restart, iwl4965_bg_restart);
8531 INIT_WORK(&priv->rx_replenish, iwl4965_bg_rx_replenish);
8532 INIT_WORK(&priv->scan_completed, iwl4965_bg_scan_completed);
8533 INIT_WORK(&priv->request_scan, iwl4965_bg_request_scan);
8534 INIT_WORK(&priv->abort_scan, iwl4965_bg_abort_scan);
8535 INIT_WORK(&priv->rf_kill, iwl4965_bg_rf_kill);
8536 INIT_WORK(&priv->beacon_update, iwl4965_bg_beacon_update);
8537 INIT_DELAYED_WORK(&priv->post_associate, iwl4965_bg_post_associate);
8538 INIT_DELAYED_WORK(&priv->init_alive_start, iwl4965_bg_init_alive_start);
8539 INIT_DELAYED_WORK(&priv->alive_start, iwl4965_bg_alive_start);
8540 INIT_DELAYED_WORK(&priv->scan_check, iwl4965_bg_scan_check);
8541
8542 iwl4965_hw_setup_deferred_work(priv);
8543
8544 tasklet_init(&priv->irq_tasklet, (void (*)(unsigned long))
8545 iwl4965_irq_tasklet, (unsigned long)priv);
8546 }
8547
8548 static void iwl4965_cancel_deferred_work(struct iwl4965_priv *priv)
8549 {
8550 iwl4965_hw_cancel_deferred_work(priv);
8551
8552 cancel_delayed_work_sync(&priv->init_alive_start);
8553 cancel_delayed_work(&priv->scan_check);
8554 cancel_delayed_work(&priv->alive_start);
8555 cancel_delayed_work(&priv->post_associate);
8556 cancel_work_sync(&priv->beacon_update);
8557 }
8558
8559 static struct attribute *iwl4965_sysfs_entries[] = {
8560 &dev_attr_antenna.attr,
8561 &dev_attr_channels.attr,
8562 &dev_attr_dump_errors.attr,
8563 &dev_attr_dump_events.attr,
8564 &dev_attr_flags.attr,
8565 &dev_attr_filter_flags.attr,
8566 #ifdef CONFIG_IWL4965_SPECTRUM_MEASUREMENT
8567 &dev_attr_measurement.attr,
8568 #endif
8569 &dev_attr_power_level.attr,
8570 &dev_attr_retry_rate.attr,
8571 &dev_attr_rf_kill.attr,
8572 &dev_attr_rs_window.attr,
8573 &dev_attr_statistics.attr,
8574 &dev_attr_status.attr,
8575 &dev_attr_temperature.attr,
8576 &dev_attr_tx_power.attr,
8577
8578 NULL
8579 };
8580
8581 static struct attribute_group iwl4965_attribute_group = {
8582 .name = NULL, /* put in device directory */
8583 .attrs = iwl4965_sysfs_entries,
8584 };
8585
8586 static struct ieee80211_ops iwl4965_hw_ops = {
8587 .tx = iwl4965_mac_tx,
8588 .start = iwl4965_mac_start,
8589 .stop = iwl4965_mac_stop,
8590 .add_interface = iwl4965_mac_add_interface,
8591 .remove_interface = iwl4965_mac_remove_interface,
8592 .config = iwl4965_mac_config,
8593 .config_interface = iwl4965_mac_config_interface,
8594 .configure_filter = iwl4965_configure_filter,
8595 .set_key = iwl4965_mac_set_key,
8596 .get_stats = iwl4965_mac_get_stats,
8597 .get_tx_stats = iwl4965_mac_get_tx_stats,
8598 .conf_tx = iwl4965_mac_conf_tx,
8599 .get_tsf = iwl4965_mac_get_tsf,
8600 .reset_tsf = iwl4965_mac_reset_tsf,
8601 .beacon_update = iwl4965_mac_beacon_update,
8602 .bss_info_changed = iwl4965_bss_info_changed,
8603 #ifdef CONFIG_IWL4965_HT
8604 .conf_ht = iwl4965_mac_conf_ht,
8605 .ampdu_action = iwl4965_mac_ampdu_action,
8606 #endif /* CONFIG_IWL4965_HT */
8607 .hw_scan = iwl4965_mac_hw_scan
8608 };
8609
8610 static int iwl4965_pci_probe(struct pci_dev *pdev, const struct pci_device_id *ent)
8611 {
8612 int err = 0;
8613 struct iwl4965_priv *priv;
8614 struct ieee80211_hw *hw;
8615 int i;
8616 DECLARE_MAC_BUF(mac);
8617
8618 /* Disabling hardware scan means that mac80211 will perform scans
8619 * "the hard way", rather than using device's scan. */
8620 if (iwl4965_param_disable_hw_scan) {
8621 IWL_DEBUG_INFO("Disabling hw_scan\n");
8622 iwl4965_hw_ops.hw_scan = NULL;
8623 }
8624
8625 if ((iwl4965_param_queues_num > IWL_MAX_NUM_QUEUES) ||
8626 (iwl4965_param_queues_num < IWL_MIN_NUM_QUEUES)) {
8627 IWL_ERROR("invalid queues_num, should be between %d and %d\n",
8628 IWL_MIN_NUM_QUEUES, IWL_MAX_NUM_QUEUES);
8629 err = -EINVAL;
8630 goto out;
8631 }
8632
8633 /* mac80211 allocates memory for this device instance, including
8634 * space for this driver's private structure */
8635 hw = ieee80211_alloc_hw(sizeof(struct iwl4965_priv), &iwl4965_hw_ops);
8636 if (hw == NULL) {
8637 IWL_ERROR("Can not allocate network device\n");
8638 err = -ENOMEM;
8639 goto out;
8640 }
8641 SET_IEEE80211_DEV(hw, &pdev->dev);
8642
8643 hw->rate_control_algorithm = "iwl-4965-rs";
8644
8645 IWL_DEBUG_INFO("*** LOAD DRIVER ***\n");
8646 priv = hw->priv;
8647 priv->hw = hw;
8648
8649 priv->pci_dev = pdev;
8650 priv->antenna = (enum iwl4965_antenna)iwl4965_param_antenna;
8651 #ifdef CONFIG_IWL4965_DEBUG
8652 iwl4965_debug_level = iwl4965_param_debug;
8653 atomic_set(&priv->restrict_refcnt, 0);
8654 #endif
8655 priv->retry_rate = 1;
8656
8657 priv->ibss_beacon = NULL;
8658
8659 /* Tell mac80211 and its clients (e.g. Wireless Extensions)
8660 * the range of signal quality values that we'll provide.
8661 * Negative values for level/noise indicate that we'll provide dBm.
8662 * For WE, at least, non-0 values here *enable* display of values
8663 * in app (iwconfig). */
8664 hw->max_rssi = -20; /* signal level, negative indicates dBm */
8665 hw->max_noise = -20; /* noise level, negative indicates dBm */
8666 hw->max_signal = 100; /* link quality indication (%) */
8667
8668 /* Tell mac80211 our Tx characteristics */
8669 hw->flags = IEEE80211_HW_HOST_GEN_BEACON_TEMPLATE;
8670
8671 /* Default value; 4 EDCA QOS priorities */
8672 hw->queues = 4;
8673 #ifdef CONFIG_IWL4965_HT
8674 /* Enhanced value; more queues, to support 11n aggregation */
8675 hw->queues = 16;
8676 #endif /* CONFIG_IWL4965_HT */
8677
8678 spin_lock_init(&priv->lock);
8679 spin_lock_init(&priv->power_data.lock);
8680 spin_lock_init(&priv->sta_lock);
8681 spin_lock_init(&priv->hcmd_lock);
8682 spin_lock_init(&priv->lq_mngr.lock);
8683
8684 for (i = 0; i < IWL_IBSS_MAC_HASH_SIZE; i++)
8685 INIT_LIST_HEAD(&priv->ibss_mac_hash[i]);
8686
8687 INIT_LIST_HEAD(&priv->free_frames);
8688
8689 mutex_init(&priv->mutex);
8690 if (pci_enable_device(pdev)) {
8691 err = -ENODEV;
8692 goto out_ieee80211_free_hw;
8693 }
8694
8695 pci_set_master(pdev);
8696
8697 /* Clear the driver's (not device's) station table */
8698 iwl4965_clear_stations_table(priv);
8699
8700 priv->data_retry_limit = -1;
8701 priv->ieee_channels = NULL;
8702 priv->ieee_rates = NULL;
8703 priv->band = IEEE80211_BAND_2GHZ;
8704
8705 err = pci_set_dma_mask(pdev, DMA_32BIT_MASK);
8706 if (!err)
8707 err = pci_set_consistent_dma_mask(pdev, DMA_32BIT_MASK);
8708 if (err) {
8709 printk(KERN_WARNING DRV_NAME ": No suitable DMA available.\n");
8710 goto out_pci_disable_device;
8711 }
8712
8713 pci_set_drvdata(pdev, priv);
8714 err = pci_request_regions(pdev, DRV_NAME);
8715 if (err)
8716 goto out_pci_disable_device;
8717
8718 /* We disable the RETRY_TIMEOUT register (0x41) to keep
8719 * PCI Tx retries from interfering with C3 CPU state */
8720 pci_write_config_byte(pdev, 0x41, 0x00);
8721
8722 priv->hw_base = pci_iomap(pdev, 0, 0);
8723 if (!priv->hw_base) {
8724 err = -ENODEV;
8725 goto out_pci_release_regions;
8726 }
8727
8728 IWL_DEBUG_INFO("pci_resource_len = 0x%08llx\n",
8729 (unsigned long long) pci_resource_len(pdev, 0));
8730 IWL_DEBUG_INFO("pci_resource_base = %p\n", priv->hw_base);
8731
8732 /* Initialize module parameter values here */
8733
8734 /* Disable radio (SW RF KILL) via parameter when loading driver */
8735 if (iwl4965_param_disable) {
8736 set_bit(STATUS_RF_KILL_SW, &priv->status);
8737 IWL_DEBUG_INFO("Radio disabled.\n");
8738 }
8739
8740 priv->iw_mode = IEEE80211_IF_TYPE_STA;
8741
8742 priv->ps_mode = 0;
8743 priv->use_ant_b_for_management_frame = 1; /* start with ant B */
8744 priv->valid_antenna = 0x7; /* assume all 3 connected */
8745 priv->ps_mode = IWL_MIMO_PS_NONE;
8746
8747 /* Choose which receivers/antennas to use */
8748 iwl4965_set_rxon_chain(priv);
8749
8750 printk(KERN_INFO DRV_NAME
8751 ": Detected Intel Wireless WiFi Link 4965AGN\n");
8752
8753 /* Device-specific setup */
8754 if (iwl4965_hw_set_hw_setting(priv)) {
8755 IWL_ERROR("failed to set hw settings\n");
8756 goto out_iounmap;
8757 }
8758
8759 if (iwl4965_param_qos_enable)
8760 priv->qos_data.qos_enable = 1;
8761
8762 iwl4965_reset_qos(priv);
8763
8764 priv->qos_data.qos_active = 0;
8765 priv->qos_data.qos_cap.val = 0;
8766
8767 iwl4965_set_rxon_channel(priv, IEEE80211_BAND_2GHZ, 6);
8768 iwl4965_setup_deferred_work(priv);
8769 iwl4965_setup_rx_handlers(priv);
8770
8771 priv->rates_mask = IWL_RATES_MASK;
8772 /* If power management is turned on, default to AC mode */
8773 priv->power_mode = IWL_POWER_AC;
8774 priv->user_txpower_limit = IWL_DEFAULT_TX_POWER;
8775
8776 iwl4965_disable_interrupts(priv);
8777
8778 err = sysfs_create_group(&pdev->dev.kobj, &iwl4965_attribute_group);
8779 if (err) {
8780 IWL_ERROR("failed to create sysfs device attributes\n");
8781 goto out_release_irq;
8782 }
8783
8784 /* nic init */
8785 iwl4965_set_bit(priv, CSR_GIO_CHICKEN_BITS,
8786 CSR_GIO_CHICKEN_BITS_REG_BIT_DIS_L0S_EXIT_TIMER);
8787
8788 iwl4965_set_bit(priv, CSR_GP_CNTRL, CSR_GP_CNTRL_REG_FLAG_INIT_DONE);
8789 err = iwl4965_poll_bit(priv, CSR_GP_CNTRL,
8790 CSR_GP_CNTRL_REG_FLAG_MAC_CLOCK_READY,
8791 CSR_GP_CNTRL_REG_FLAG_MAC_CLOCK_READY, 25000);
8792 if (err < 0) {
8793 IWL_DEBUG_INFO("Failed to init the card\n");
8794 goto out_remove_sysfs;
8795 }
8796 /* Read the EEPROM */
8797 err = iwl4965_eeprom_init(priv);
8798 if (err) {
8799 IWL_ERROR("Unable to init EEPROM\n");
8800 goto out_remove_sysfs;
8801 }
8802 /* MAC Address location in EEPROM same for 3945/4965 */
8803 get_eeprom_mac(priv, priv->mac_addr);
8804 IWL_DEBUG_INFO("MAC address: %s\n", print_mac(mac, priv->mac_addr));
8805 SET_IEEE80211_PERM_ADDR(priv->hw, priv->mac_addr);
8806
8807 err = iwl4965_init_channel_map(priv);
8808 if (err) {
8809 IWL_ERROR("initializing regulatory failed: %d\n", err);
8810 goto out_remove_sysfs;
8811 }
8812
8813 err = iwl4965_init_geos(priv);
8814 if (err) {
8815 IWL_ERROR("initializing geos failed: %d\n", err);
8816 goto out_free_channel_map;
8817 }
8818
8819 iwl4965_rate_control_register(priv->hw);
8820 err = ieee80211_register_hw(priv->hw);
8821 if (err) {
8822 IWL_ERROR("Failed to register network device (error %d)\n", err);
8823 goto out_free_geos;
8824 }
8825
8826 priv->hw->conf.beacon_int = 100;
8827 priv->mac80211_registered = 1;
8828 pci_save_state(pdev);
8829 pci_disable_device(pdev);
8830
8831 return 0;
8832
8833 out_free_geos:
8834 iwl4965_free_geos(priv);
8835 out_free_channel_map:
8836 iwl4965_free_channel_map(priv);
8837 out_remove_sysfs:
8838 sysfs_remove_group(&pdev->dev.kobj, &iwl4965_attribute_group);
8839
8840 out_release_irq:
8841 destroy_workqueue(priv->workqueue);
8842 priv->workqueue = NULL;
8843 iwl4965_unset_hw_setting(priv);
8844
8845 out_iounmap:
8846 pci_iounmap(pdev, priv->hw_base);
8847 out_pci_release_regions:
8848 pci_release_regions(pdev);
8849 out_pci_disable_device:
8850 pci_disable_device(pdev);
8851 pci_set_drvdata(pdev, NULL);
8852 out_ieee80211_free_hw:
8853 ieee80211_free_hw(priv->hw);
8854 out:
8855 return err;
8856 }
8857
8858 static void iwl4965_pci_remove(struct pci_dev *pdev)
8859 {
8860 struct iwl4965_priv *priv = pci_get_drvdata(pdev);
8861 struct list_head *p, *q;
8862 int i;
8863
8864 if (!priv)
8865 return;
8866
8867 IWL_DEBUG_INFO("*** UNLOAD DRIVER ***\n");
8868
8869 set_bit(STATUS_EXIT_PENDING, &priv->status);
8870
8871 iwl4965_down(priv);
8872
8873 /* Free MAC hash list for ADHOC */
8874 for (i = 0; i < IWL_IBSS_MAC_HASH_SIZE; i++) {
8875 list_for_each_safe(p, q, &priv->ibss_mac_hash[i]) {
8876 list_del(p);
8877 kfree(list_entry(p, struct iwl4965_ibss_seq, list));
8878 }
8879 }
8880
8881 sysfs_remove_group(&pdev->dev.kobj, &iwl4965_attribute_group);
8882
8883 iwl4965_dealloc_ucode_pci(priv);
8884
8885 if (priv->rxq.bd)
8886 iwl4965_rx_queue_free(priv, &priv->rxq);
8887 iwl4965_hw_txq_ctx_free(priv);
8888
8889 iwl4965_unset_hw_setting(priv);
8890 iwl4965_clear_stations_table(priv);
8891
8892 if (priv->mac80211_registered) {
8893 ieee80211_unregister_hw(priv->hw);
8894 iwl4965_rate_control_unregister(priv->hw);
8895 }
8896
8897 /*netif_stop_queue(dev); */
8898 flush_workqueue(priv->workqueue);
8899
8900 /* ieee80211_unregister_hw calls iwl4965_mac_stop, which flushes
8901 * priv->workqueue... so we can't take down the workqueue
8902 * until now... */
8903 destroy_workqueue(priv->workqueue);
8904 priv->workqueue = NULL;
8905
8906 pci_iounmap(pdev, priv->hw_base);
8907 pci_release_regions(pdev);
8908 pci_disable_device(pdev);
8909 pci_set_drvdata(pdev, NULL);
8910
8911 iwl4965_free_channel_map(priv);
8912 iwl4965_free_geos(priv);
8913
8914 if (priv->ibss_beacon)
8915 dev_kfree_skb(priv->ibss_beacon);
8916
8917 ieee80211_free_hw(priv->hw);
8918 }
8919
8920 #ifdef CONFIG_PM
8921
8922 static int iwl4965_pci_suspend(struct pci_dev *pdev, pm_message_t state)
8923 {
8924 struct iwl4965_priv *priv = pci_get_drvdata(pdev);
8925
8926 if (priv->is_open) {
8927 set_bit(STATUS_IN_SUSPEND, &priv->status);
8928 iwl4965_mac_stop(priv->hw);
8929 priv->is_open = 1;
8930 }
8931
8932 pci_set_power_state(pdev, PCI_D3hot);
8933
8934 return 0;
8935 }
8936
8937 static int iwl4965_pci_resume(struct pci_dev *pdev)
8938 {
8939 struct iwl4965_priv *priv = pci_get_drvdata(pdev);
8940
8941 pci_set_power_state(pdev, PCI_D0);
8942
8943 if (priv->is_open)
8944 iwl4965_mac_start(priv->hw);
8945
8946 clear_bit(STATUS_IN_SUSPEND, &priv->status);
8947 return 0;
8948 }
8949
8950 #endif /* CONFIG_PM */
8951
8952 /*****************************************************************************
8953 *
8954 * driver and module entry point
8955 *
8956 *****************************************************************************/
8957
8958 static struct pci_driver iwl4965_driver = {
8959 .name = DRV_NAME,
8960 .id_table = iwl4965_hw_card_ids,
8961 .probe = iwl4965_pci_probe,
8962 .remove = __devexit_p(iwl4965_pci_remove),
8963 #ifdef CONFIG_PM
8964 .suspend = iwl4965_pci_suspend,
8965 .resume = iwl4965_pci_resume,
8966 #endif
8967 };
8968
8969 static int __init iwl4965_init(void)
8970 {
8971
8972 int ret;
8973 printk(KERN_INFO DRV_NAME ": " DRV_DESCRIPTION ", " DRV_VERSION "\n");
8974 printk(KERN_INFO DRV_NAME ": " DRV_COPYRIGHT "\n");
8975 ret = pci_register_driver(&iwl4965_driver);
8976 if (ret) {
8977 IWL_ERROR("Unable to initialize PCI module\n");
8978 return ret;
8979 }
8980 #ifdef CONFIG_IWL4965_DEBUG
8981 ret = driver_create_file(&iwl4965_driver.driver, &driver_attr_debug_level);
8982 if (ret) {
8983 IWL_ERROR("Unable to create driver sysfs file\n");
8984 pci_unregister_driver(&iwl4965_driver);
8985 return ret;
8986 }
8987 #endif
8988
8989 return ret;
8990 }
8991
8992 static void __exit iwl4965_exit(void)
8993 {
8994 #ifdef CONFIG_IWL4965_DEBUG
8995 driver_remove_file(&iwl4965_driver.driver, &driver_attr_debug_level);
8996 #endif
8997 pci_unregister_driver(&iwl4965_driver);
8998 }
8999
9000 module_param_named(antenna, iwl4965_param_antenna, int, 0444);
9001 MODULE_PARM_DESC(antenna, "select antenna (1=Main, 2=Aux, default 0 [both])");
9002 module_param_named(disable, iwl4965_param_disable, int, 0444);
9003 MODULE_PARM_DESC(disable, "manually disable the radio (default 0 [radio on])");
9004 module_param_named(hwcrypto, iwl4965_param_hwcrypto, int, 0444);
9005 MODULE_PARM_DESC(hwcrypto,
9006 "using hardware crypto engine (default 0 [software])\n");
9007 module_param_named(debug, iwl4965_param_debug, int, 0444);
9008 MODULE_PARM_DESC(debug, "debug output mask");
9009 module_param_named(disable_hw_scan, iwl4965_param_disable_hw_scan, int, 0444);
9010 MODULE_PARM_DESC(disable_hw_scan, "disable hardware scanning (default 0)");
9011
9012 module_param_named(queues_num, iwl4965_param_queues_num, int, 0444);
9013 MODULE_PARM_DESC(queues_num, "number of hw queues.");
9014
9015 /* QoS */
9016 module_param_named(qos_enable, iwl4965_param_qos_enable, int, 0444);
9017 MODULE_PARM_DESC(qos_enable, "enable all QoS functionality");
9018 module_param_named(amsdu_size_8K, iwl4965_param_amsdu_size_8K, int, 0444);
9019 MODULE_PARM_DESC(amsdu_size_8K, "enable 8K amsdu size");
9020
9021 module_exit(iwl4965_exit);
9022 module_init(iwl4965_init);
Linux kernel - Deliverables
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