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iwlwifi: add struct iwl_cfg
[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-core.h"
49 #include "iwl-4965.h"
50 #include "iwl-helpers.h"
51
52 #ifdef CONFIG_IWL4965_DEBUG
53 u32 iwl4965_debug_level;
54 #endif
55
56 static int iwl4965_tx_queue_update_write_ptr(struct iwl4965_priv *priv,
57 struct iwl4965_tx_queue *txq);
58
59 /******************************************************************************
60 *
61 * module boiler plate
62 *
63 ******************************************************************************/
64
65 /* module parameters */
66 static int iwl4965_param_disable_hw_scan; /* def: 0 = use 4965's h/w scan */
67 static int iwl4965_param_debug; /* def: 0 = minimal debug log messages */
68 static int iwl4965_param_disable; /* def: enable radio */
69 static int iwl4965_param_antenna; /* def: 0 = both antennas (use diversity) */
70 int iwl4965_param_hwcrypto; /* def: using software encryption */
71 static int iwl4965_param_qos_enable = 1; /* def: 1 = use quality of service */
72 int iwl4965_param_queues_num = IWL_MAX_NUM_QUEUES; /* def: 16 Tx queues */
73 int iwl4965_param_amsdu_size_8K; /* def: enable 8K amsdu size */
74
75 /*
76 * module name, copyright, version, etc.
77 * NOTE: DRV_NAME is defined in iwlwifi.h for use by iwl-debug.h and printk
78 */
79
80 #define DRV_DESCRIPTION "Intel(R) Wireless WiFi Link 4965AGN driver for Linux"
81
82 #ifdef CONFIG_IWL4965_DEBUG
83 #define VD "d"
84 #else
85 #define VD
86 #endif
87
88 #ifdef CONFIG_IWL4965_SPECTRUM_MEASUREMENT
89 #define VS "s"
90 #else
91 #define VS
92 #endif
93
94 #define IWLWIFI_VERSION "1.2.26k" VD VS
95 #define DRV_COPYRIGHT "Copyright(c) 2003-2007 Intel Corporation"
96 #define DRV_VERSION IWLWIFI_VERSION
97
98 /* Change firmware file name, using "-" and incrementing number,
99 * *only* when uCode interface or architecture changes so that it
100 * is not compatible with earlier drivers.
101 * This number will also appear in << 8 position of 1st dword of uCode file */
102 #define IWL4965_UCODE_API "-1"
103
104 MODULE_DESCRIPTION(DRV_DESCRIPTION);
105 MODULE_VERSION(DRV_VERSION);
106 MODULE_AUTHOR(DRV_COPYRIGHT);
107 MODULE_LICENSE("GPL");
108
109 __le16 *ieee80211_get_qos_ctrl(struct ieee80211_hdr *hdr)
110 {
111 u16 fc = le16_to_cpu(hdr->frame_control);
112 int hdr_len = ieee80211_get_hdrlen(fc);
113
114 if ((fc & 0x00cc) == (IEEE80211_STYPE_QOS_DATA | IEEE80211_FTYPE_DATA))
115 return (__le16 *) ((u8 *) hdr + hdr_len - QOS_CONTROL_LEN);
116 return NULL;
117 }
118
119 static const struct ieee80211_supported_band *iwl4965_get_hw_mode(
120 struct iwl4965_priv *priv, enum ieee80211_band band)
121 {
122 return priv->hw->wiphy->bands[band];
123 }
124
125 static int iwl4965_is_empty_essid(const char *essid, int essid_len)
126 {
127 /* Single white space is for Linksys APs */
128 if (essid_len == 1 && essid[0] == ' ')
129 return 1;
130
131 /* Otherwise, if the entire essid is 0, we assume it is hidden */
132 while (essid_len) {
133 essid_len--;
134 if (essid[essid_len] != '\0')
135 return 0;
136 }
137
138 return 1;
139 }
140
141 static const char *iwl4965_escape_essid(const char *essid, u8 essid_len)
142 {
143 static char escaped[IW_ESSID_MAX_SIZE * 2 + 1];
144 const char *s = essid;
145 char *d = escaped;
146
147 if (iwl4965_is_empty_essid(essid, essid_len)) {
148 memcpy(escaped, "<hidden>", sizeof("<hidden>"));
149 return escaped;
150 }
151
152 essid_len = min(essid_len, (u8) IW_ESSID_MAX_SIZE);
153 while (essid_len--) {
154 if (*s == '\0') {
155 *d++ = '\\';
156 *d++ = '0';
157 s++;
158 } else
159 *d++ = *s++;
160 }
161 *d = '\0';
162 return escaped;
163 }
164
165 /*************** DMA-QUEUE-GENERAL-FUNCTIONS *****
166 * DMA services
167 *
168 * Theory of operation
169 *
170 * A Tx or Rx queue resides in host DRAM, and is comprised of a circular buffer
171 * of buffer descriptors, each of which points to one or more data buffers for
172 * the device to read from or fill. Driver and device exchange status of each
173 * queue via "read" and "write" pointers. Driver keeps minimum of 2 empty
174 * entries in each circular buffer, to protect against confusing empty and full
175 * queue states.
176 *
177 * The device reads or writes the data in the queues via the device's several
178 * DMA/FIFO channels. Each queue is mapped to a single DMA channel.
179 *
180 * For Tx queue, there are low mark and high mark limits. If, after queuing
181 * the packet for Tx, free space become < low mark, Tx queue stopped. When
182 * reclaiming packets (on 'tx done IRQ), if free space become > high mark,
183 * Tx queue resumed.
184 *
185 * The 4965 operates with up to 17 queues: One receive queue, one transmit
186 * queue (#4) for sending commands to the device firmware, and 15 other
187 * Tx queues that may be mapped to prioritized Tx DMA/FIFO channels.
188 *
189 * See more detailed info in iwl-4965-hw.h.
190 ***************************************************/
191
192 int iwl4965_queue_space(const struct iwl4965_queue *q)
193 {
194 int s = q->read_ptr - q->write_ptr;
195
196 if (q->read_ptr > q->write_ptr)
197 s -= q->n_bd;
198
199 if (s <= 0)
200 s += q->n_window;
201 /* keep some reserve to not confuse empty and full situations */
202 s -= 2;
203 if (s < 0)
204 s = 0;
205 return s;
206 }
207
208 /**
209 * iwl4965_queue_inc_wrap - increment queue index, wrap back to beginning
210 * @index -- current index
211 * @n_bd -- total number of entries in queue (must be power of 2)
212 */
213 static inline int iwl4965_queue_inc_wrap(int index, int n_bd)
214 {
215 return ++index & (n_bd - 1);
216 }
217
218 /**
219 * iwl4965_queue_dec_wrap - decrement queue index, wrap back to end
220 * @index -- current index
221 * @n_bd -- total number of entries in queue (must be power of 2)
222 */
223 static inline int iwl4965_queue_dec_wrap(int index, int n_bd)
224 {
225 return --index & (n_bd - 1);
226 }
227
228 static inline int x2_queue_used(const struct iwl4965_queue *q, int i)
229 {
230 return q->write_ptr > q->read_ptr ?
231 (i >= q->read_ptr && i < q->write_ptr) :
232 !(i < q->read_ptr && i >= q->write_ptr);
233 }
234
235 static inline u8 get_cmd_index(struct iwl4965_queue *q, u32 index, int is_huge)
236 {
237 /* This is for scan command, the big buffer at end of command array */
238 if (is_huge)
239 return q->n_window; /* must be power of 2 */
240
241 /* Otherwise, use normal size buffers */
242 return index & (q->n_window - 1);
243 }
244
245 /**
246 * iwl4965_queue_init - Initialize queue's high/low-water and read/write indexes
247 */
248 static int iwl4965_queue_init(struct iwl4965_priv *priv, struct iwl4965_queue *q,
249 int count, int slots_num, u32 id)
250 {
251 q->n_bd = count;
252 q->n_window = slots_num;
253 q->id = id;
254
255 /* count must be power-of-two size, otherwise iwl4965_queue_inc_wrap
256 * and iwl4965_queue_dec_wrap are broken. */
257 BUG_ON(!is_power_of_2(count));
258
259 /* slots_num must be power-of-two size, otherwise
260 * get_cmd_index is broken. */
261 BUG_ON(!is_power_of_2(slots_num));
262
263 q->low_mark = q->n_window / 4;
264 if (q->low_mark < 4)
265 q->low_mark = 4;
266
267 q->high_mark = q->n_window / 8;
268 if (q->high_mark < 2)
269 q->high_mark = 2;
270
271 q->write_ptr = q->read_ptr = 0;
272
273 return 0;
274 }
275
276 /**
277 * iwl4965_tx_queue_alloc - Alloc driver data and TFD CB for one Tx/cmd queue
278 */
279 static int iwl4965_tx_queue_alloc(struct iwl4965_priv *priv,
280 struct iwl4965_tx_queue *txq, u32 id)
281 {
282 struct pci_dev *dev = priv->pci_dev;
283
284 /* Driver private data, only for Tx (not command) queues,
285 * not shared with device. */
286 if (id != IWL_CMD_QUEUE_NUM) {
287 txq->txb = kmalloc(sizeof(txq->txb[0]) *
288 TFD_QUEUE_SIZE_MAX, GFP_KERNEL);
289 if (!txq->txb) {
290 IWL_ERROR("kmalloc for auxiliary BD "
291 "structures failed\n");
292 goto error;
293 }
294 } else
295 txq->txb = NULL;
296
297 /* Circular buffer of transmit frame descriptors (TFDs),
298 * shared with device */
299 txq->bd = pci_alloc_consistent(dev,
300 sizeof(txq->bd[0]) * TFD_QUEUE_SIZE_MAX,
301 &txq->q.dma_addr);
302
303 if (!txq->bd) {
304 IWL_ERROR("pci_alloc_consistent(%zd) failed\n",
305 sizeof(txq->bd[0]) * TFD_QUEUE_SIZE_MAX);
306 goto error;
307 }
308 txq->q.id = id;
309
310 return 0;
311
312 error:
313 if (txq->txb) {
314 kfree(txq->txb);
315 txq->txb = NULL;
316 }
317
318 return -ENOMEM;
319 }
320
321 /**
322 * iwl4965_tx_queue_init - Allocate and initialize one tx/cmd queue
323 */
324 int iwl4965_tx_queue_init(struct iwl4965_priv *priv,
325 struct iwl4965_tx_queue *txq, int slots_num, u32 txq_id)
326 {
327 struct pci_dev *dev = priv->pci_dev;
328 int len;
329 int rc = 0;
330
331 /*
332 * Alloc buffer array for commands (Tx or other types of commands).
333 * For the command queue (#4), allocate command space + one big
334 * command for scan, since scan command is very huge; the system will
335 * not have two scans at the same time, so only one is needed.
336 * For normal Tx queues (all other queues), no super-size command
337 * space is needed.
338 */
339 len = sizeof(struct iwl4965_cmd) * slots_num;
340 if (txq_id == IWL_CMD_QUEUE_NUM)
341 len += IWL_MAX_SCAN_SIZE;
342 txq->cmd = pci_alloc_consistent(dev, len, &txq->dma_addr_cmd);
343 if (!txq->cmd)
344 return -ENOMEM;
345
346 /* Alloc driver data array and TFD circular buffer */
347 rc = iwl4965_tx_queue_alloc(priv, txq, txq_id);
348 if (rc) {
349 pci_free_consistent(dev, len, txq->cmd, txq->dma_addr_cmd);
350
351 return -ENOMEM;
352 }
353 txq->need_update = 0;
354
355 /* TFD_QUEUE_SIZE_MAX must be power-of-two size, otherwise
356 * iwl4965_queue_inc_wrap and iwl4965_queue_dec_wrap are broken. */
357 BUILD_BUG_ON(TFD_QUEUE_SIZE_MAX & (TFD_QUEUE_SIZE_MAX - 1));
358
359 /* Initialize queue's high/low-water marks, and head/tail indexes */
360 iwl4965_queue_init(priv, &txq->q, TFD_QUEUE_SIZE_MAX, slots_num, txq_id);
361
362 /* Tell device where to find queue */
363 iwl4965_hw_tx_queue_init(priv, txq);
364
365 return 0;
366 }
367
368 /**
369 * iwl4965_tx_queue_free - Deallocate DMA queue.
370 * @txq: Transmit queue to deallocate.
371 *
372 * Empty queue by removing and destroying all BD's.
373 * Free all buffers.
374 * 0-fill, but do not free "txq" descriptor structure.
375 */
376 void iwl4965_tx_queue_free(struct iwl4965_priv *priv, struct iwl4965_tx_queue *txq)
377 {
378 struct iwl4965_queue *q = &txq->q;
379 struct pci_dev *dev = priv->pci_dev;
380 int len;
381
382 if (q->n_bd == 0)
383 return;
384
385 /* first, empty all BD's */
386 for (; q->write_ptr != q->read_ptr;
387 q->read_ptr = iwl4965_queue_inc_wrap(q->read_ptr, q->n_bd))
388 iwl4965_hw_txq_free_tfd(priv, txq);
389
390 len = sizeof(struct iwl4965_cmd) * q->n_window;
391 if (q->id == IWL_CMD_QUEUE_NUM)
392 len += IWL_MAX_SCAN_SIZE;
393
394 /* De-alloc array of command/tx buffers */
395 pci_free_consistent(dev, len, txq->cmd, txq->dma_addr_cmd);
396
397 /* De-alloc circular buffer of TFDs */
398 if (txq->q.n_bd)
399 pci_free_consistent(dev, sizeof(struct iwl4965_tfd_frame) *
400 txq->q.n_bd, txq->bd, txq->q.dma_addr);
401
402 /* De-alloc array of per-TFD driver data */
403 if (txq->txb) {
404 kfree(txq->txb);
405 txq->txb = NULL;
406 }
407
408 /* 0-fill queue descriptor structure */
409 memset(txq, 0, sizeof(*txq));
410 }
411
412 const u8 iwl4965_broadcast_addr[ETH_ALEN] = { 0xFF, 0xFF, 0xFF, 0xFF, 0xFF, 0xFF };
413
414 /*************** STATION TABLE MANAGEMENT ****
415 * mac80211 should be examined to determine if sta_info is duplicating
416 * the functionality provided here
417 */
418
419 /**************************************************************/
420
421 #if 0 /* temporary disable till we add real remove station */
422 /**
423 * iwl4965_remove_station - Remove driver's knowledge of station.
424 *
425 * NOTE: This does not remove station from device's station table.
426 */
427 static u8 iwl4965_remove_station(struct iwl4965_priv *priv, const u8 *addr, int is_ap)
428 {
429 int index = IWL_INVALID_STATION;
430 int i;
431 unsigned long flags;
432
433 spin_lock_irqsave(&priv->sta_lock, flags);
434
435 if (is_ap)
436 index = IWL_AP_ID;
437 else if (is_broadcast_ether_addr(addr))
438 index = priv->hw_setting.bcast_sta_id;
439 else
440 for (i = IWL_STA_ID; i < priv->hw_setting.max_stations; i++)
441 if (priv->stations[i].used &&
442 !compare_ether_addr(priv->stations[i].sta.sta.addr,
443 addr)) {
444 index = i;
445 break;
446 }
447
448 if (unlikely(index == IWL_INVALID_STATION))
449 goto out;
450
451 if (priv->stations[index].used) {
452 priv->stations[index].used = 0;
453 priv->num_stations--;
454 }
455
456 BUG_ON(priv->num_stations < 0);
457
458 out:
459 spin_unlock_irqrestore(&priv->sta_lock, flags);
460 return 0;
461 }
462 #endif
463
464 /**
465 * iwl4965_clear_stations_table - Clear the driver's station table
466 *
467 * NOTE: This does not clear or otherwise alter the device's station table.
468 */
469 static void iwl4965_clear_stations_table(struct iwl4965_priv *priv)
470 {
471 unsigned long flags;
472
473 spin_lock_irqsave(&priv->sta_lock, flags);
474
475 priv->num_stations = 0;
476 memset(priv->stations, 0, sizeof(priv->stations));
477
478 spin_unlock_irqrestore(&priv->sta_lock, flags);
479 }
480
481 /**
482 * iwl4965_add_station_flags - Add station to tables in driver and device
483 */
484 u8 iwl4965_add_station_flags(struct iwl4965_priv *priv, const u8 *addr,
485 int is_ap, u8 flags, void *ht_data)
486 {
487 int i;
488 int index = IWL_INVALID_STATION;
489 struct iwl4965_station_entry *station;
490 unsigned long flags_spin;
491 DECLARE_MAC_BUF(mac);
492
493 spin_lock_irqsave(&priv->sta_lock, flags_spin);
494 if (is_ap)
495 index = IWL_AP_ID;
496 else if (is_broadcast_ether_addr(addr))
497 index = priv->hw_setting.bcast_sta_id;
498 else
499 for (i = IWL_STA_ID; i < priv->hw_setting.max_stations; i++) {
500 if (!compare_ether_addr(priv->stations[i].sta.sta.addr,
501 addr)) {
502 index = i;
503 break;
504 }
505
506 if (!priv->stations[i].used &&
507 index == IWL_INVALID_STATION)
508 index = i;
509 }
510
511
512 /* These two conditions have the same outcome, but keep them separate
513 since they have different meanings */
514 if (unlikely(index == IWL_INVALID_STATION)) {
515 spin_unlock_irqrestore(&priv->sta_lock, flags_spin);
516 return index;
517 }
518
519 if (priv->stations[index].used &&
520 !compare_ether_addr(priv->stations[index].sta.sta.addr, addr)) {
521 spin_unlock_irqrestore(&priv->sta_lock, flags_spin);
522 return index;
523 }
524
525
526 IWL_DEBUG_ASSOC("Add STA ID %d: %s\n", index, print_mac(mac, addr));
527 station = &priv->stations[index];
528 station->used = 1;
529 priv->num_stations++;
530
531 /* Set up the REPLY_ADD_STA command to send to device */
532 memset(&station->sta, 0, sizeof(struct iwl4965_addsta_cmd));
533 memcpy(station->sta.sta.addr, addr, ETH_ALEN);
534 station->sta.mode = 0;
535 station->sta.sta.sta_id = index;
536 station->sta.station_flags = 0;
537
538 #ifdef CONFIG_IWL4965_HT
539 /* BCAST station and IBSS stations do not work in HT mode */
540 if (index != priv->hw_setting.bcast_sta_id &&
541 priv->iw_mode != IEEE80211_IF_TYPE_IBSS)
542 iwl4965_set_ht_add_station(priv, index,
543 (struct ieee80211_ht_info *) ht_data);
544 #endif /*CONFIG_IWL4965_HT*/
545
546 spin_unlock_irqrestore(&priv->sta_lock, flags_spin);
547
548 /* Add station to device's station table */
549 iwl4965_send_add_station(priv, &station->sta, flags);
550 return index;
551
552 }
553
554 /*************** DRIVER STATUS FUNCTIONS *****/
555
556 static inline int iwl4965_is_ready(struct iwl4965_priv *priv)
557 {
558 /* The adapter is 'ready' if READY and GEO_CONFIGURED bits are
559 * set but EXIT_PENDING is not */
560 return test_bit(STATUS_READY, &priv->status) &&
561 test_bit(STATUS_GEO_CONFIGURED, &priv->status) &&
562 !test_bit(STATUS_EXIT_PENDING, &priv->status);
563 }
564
565 static inline int iwl4965_is_alive(struct iwl4965_priv *priv)
566 {
567 return test_bit(STATUS_ALIVE, &priv->status);
568 }
569
570 static inline int iwl4965_is_init(struct iwl4965_priv *priv)
571 {
572 return test_bit(STATUS_INIT, &priv->status);
573 }
574
575 static inline int iwl4965_is_rfkill(struct iwl4965_priv *priv)
576 {
577 return test_bit(STATUS_RF_KILL_HW, &priv->status) ||
578 test_bit(STATUS_RF_KILL_SW, &priv->status);
579 }
580
581 static inline int iwl4965_is_ready_rf(struct iwl4965_priv *priv)
582 {
583
584 if (iwl4965_is_rfkill(priv))
585 return 0;
586
587 return iwl4965_is_ready(priv);
588 }
589
590 /*************** HOST COMMAND QUEUE FUNCTIONS *****/
591
592 #define IWL_CMD(x) case x : return #x
593
594 static const char *get_cmd_string(u8 cmd)
595 {
596 switch (cmd) {
597 IWL_CMD(REPLY_ALIVE);
598 IWL_CMD(REPLY_ERROR);
599 IWL_CMD(REPLY_RXON);
600 IWL_CMD(REPLY_RXON_ASSOC);
601 IWL_CMD(REPLY_QOS_PARAM);
602 IWL_CMD(REPLY_RXON_TIMING);
603 IWL_CMD(REPLY_ADD_STA);
604 IWL_CMD(REPLY_REMOVE_STA);
605 IWL_CMD(REPLY_REMOVE_ALL_STA);
606 IWL_CMD(REPLY_TX);
607 IWL_CMD(REPLY_RATE_SCALE);
608 IWL_CMD(REPLY_LEDS_CMD);
609 IWL_CMD(REPLY_TX_LINK_QUALITY_CMD);
610 IWL_CMD(RADAR_NOTIFICATION);
611 IWL_CMD(REPLY_QUIET_CMD);
612 IWL_CMD(REPLY_CHANNEL_SWITCH);
613 IWL_CMD(CHANNEL_SWITCH_NOTIFICATION);
614 IWL_CMD(REPLY_SPECTRUM_MEASUREMENT_CMD);
615 IWL_CMD(SPECTRUM_MEASURE_NOTIFICATION);
616 IWL_CMD(POWER_TABLE_CMD);
617 IWL_CMD(PM_SLEEP_NOTIFICATION);
618 IWL_CMD(PM_DEBUG_STATISTIC_NOTIFIC);
619 IWL_CMD(REPLY_SCAN_CMD);
620 IWL_CMD(REPLY_SCAN_ABORT_CMD);
621 IWL_CMD(SCAN_START_NOTIFICATION);
622 IWL_CMD(SCAN_RESULTS_NOTIFICATION);
623 IWL_CMD(SCAN_COMPLETE_NOTIFICATION);
624 IWL_CMD(BEACON_NOTIFICATION);
625 IWL_CMD(REPLY_TX_BEACON);
626 IWL_CMD(WHO_IS_AWAKE_NOTIFICATION);
627 IWL_CMD(QUIET_NOTIFICATION);
628 IWL_CMD(REPLY_TX_PWR_TABLE_CMD);
629 IWL_CMD(MEASURE_ABORT_NOTIFICATION);
630 IWL_CMD(REPLY_BT_CONFIG);
631 IWL_CMD(REPLY_STATISTICS_CMD);
632 IWL_CMD(STATISTICS_NOTIFICATION);
633 IWL_CMD(REPLY_CARD_STATE_CMD);
634 IWL_CMD(CARD_STATE_NOTIFICATION);
635 IWL_CMD(MISSED_BEACONS_NOTIFICATION);
636 IWL_CMD(REPLY_CT_KILL_CONFIG_CMD);
637 IWL_CMD(SENSITIVITY_CMD);
638 IWL_CMD(REPLY_PHY_CALIBRATION_CMD);
639 IWL_CMD(REPLY_RX_PHY_CMD);
640 IWL_CMD(REPLY_RX_MPDU_CMD);
641 IWL_CMD(REPLY_4965_RX);
642 IWL_CMD(REPLY_COMPRESSED_BA);
643 default:
644 return "UNKNOWN";
645
646 }
647 }
648
649 #define HOST_COMPLETE_TIMEOUT (HZ / 2)
650
651 /**
652 * iwl4965_enqueue_hcmd - enqueue a uCode command
653 * @priv: device private data point
654 * @cmd: a point to the ucode command structure
655 *
656 * The function returns < 0 values to indicate the operation is
657 * failed. On success, it turns the index (> 0) of command in the
658 * command queue.
659 */
660 static int iwl4965_enqueue_hcmd(struct iwl4965_priv *priv, struct iwl4965_host_cmd *cmd)
661 {
662 struct iwl4965_tx_queue *txq = &priv->txq[IWL_CMD_QUEUE_NUM];
663 struct iwl4965_queue *q = &txq->q;
664 struct iwl4965_tfd_frame *tfd;
665 u32 *control_flags;
666 struct iwl4965_cmd *out_cmd;
667 u32 idx;
668 u16 fix_size = (u16)(cmd->len + sizeof(out_cmd->hdr));
669 dma_addr_t phys_addr;
670 int ret;
671 unsigned long flags;
672
673 /* If any of the command structures end up being larger than
674 * the TFD_MAX_PAYLOAD_SIZE, and it sent as a 'small' command then
675 * we will need to increase the size of the TFD entries */
676 BUG_ON((fix_size > TFD_MAX_PAYLOAD_SIZE) &&
677 !(cmd->meta.flags & CMD_SIZE_HUGE));
678
679 if (iwl4965_is_rfkill(priv)) {
680 IWL_DEBUG_INFO("Not sending command - RF KILL");
681 return -EIO;
682 }
683
684 if (iwl4965_queue_space(q) < ((cmd->meta.flags & CMD_ASYNC) ? 2 : 1)) {
685 IWL_ERROR("No space for Tx\n");
686 return -ENOSPC;
687 }
688
689 spin_lock_irqsave(&priv->hcmd_lock, flags);
690
691 tfd = &txq->bd[q->write_ptr];
692 memset(tfd, 0, sizeof(*tfd));
693
694 control_flags = (u32 *) tfd;
695
696 idx = get_cmd_index(q, q->write_ptr, cmd->meta.flags & CMD_SIZE_HUGE);
697 out_cmd = &txq->cmd[idx];
698
699 out_cmd->hdr.cmd = cmd->id;
700 memcpy(&out_cmd->meta, &cmd->meta, sizeof(cmd->meta));
701 memcpy(&out_cmd->cmd.payload, cmd->data, cmd->len);
702
703 /* At this point, the out_cmd now has all of the incoming cmd
704 * information */
705
706 out_cmd->hdr.flags = 0;
707 out_cmd->hdr.sequence = cpu_to_le16(QUEUE_TO_SEQ(IWL_CMD_QUEUE_NUM) |
708 INDEX_TO_SEQ(q->write_ptr));
709 if (out_cmd->meta.flags & CMD_SIZE_HUGE)
710 out_cmd->hdr.sequence |= cpu_to_le16(SEQ_HUGE_FRAME);
711
712 phys_addr = txq->dma_addr_cmd + sizeof(txq->cmd[0]) * idx +
713 offsetof(struct iwl4965_cmd, hdr);
714 iwl4965_hw_txq_attach_buf_to_tfd(priv, tfd, phys_addr, fix_size);
715
716 IWL_DEBUG_HC("Sending command %s (#%x), seq: 0x%04X, "
717 "%d bytes at %d[%d]:%d\n",
718 get_cmd_string(out_cmd->hdr.cmd),
719 out_cmd->hdr.cmd, le16_to_cpu(out_cmd->hdr.sequence),
720 fix_size, q->write_ptr, idx, IWL_CMD_QUEUE_NUM);
721
722 txq->need_update = 1;
723
724 /* Set up entry in queue's byte count circular buffer */
725 ret = iwl4965_tx_queue_update_wr_ptr(priv, txq, 0);
726
727 /* Increment and update queue's write index */
728 q->write_ptr = iwl4965_queue_inc_wrap(q->write_ptr, q->n_bd);
729 iwl4965_tx_queue_update_write_ptr(priv, txq);
730
731 spin_unlock_irqrestore(&priv->hcmd_lock, flags);
732 return ret ? ret : idx;
733 }
734
735 static int iwl4965_send_cmd_async(struct iwl4965_priv *priv, struct iwl4965_host_cmd *cmd)
736 {
737 int ret;
738
739 BUG_ON(!(cmd->meta.flags & CMD_ASYNC));
740
741 /* An asynchronous command can not expect an SKB to be set. */
742 BUG_ON(cmd->meta.flags & CMD_WANT_SKB);
743
744 /* An asynchronous command MUST have a callback. */
745 BUG_ON(!cmd->meta.u.callback);
746
747 if (test_bit(STATUS_EXIT_PENDING, &priv->status))
748 return -EBUSY;
749
750 ret = iwl4965_enqueue_hcmd(priv, cmd);
751 if (ret < 0) {
752 IWL_ERROR("Error sending %s: iwl4965_enqueue_hcmd failed: %d\n",
753 get_cmd_string(cmd->id), ret);
754 return ret;
755 }
756 return 0;
757 }
758
759 static int iwl4965_send_cmd_sync(struct iwl4965_priv *priv, struct iwl4965_host_cmd *cmd)
760 {
761 int cmd_idx;
762 int ret;
763 static atomic_t entry = ATOMIC_INIT(0); /* reentrance protection */
764
765 BUG_ON(cmd->meta.flags & CMD_ASYNC);
766
767 /* A synchronous command can not have a callback set. */
768 BUG_ON(cmd->meta.u.callback != NULL);
769
770 if (atomic_xchg(&entry, 1)) {
771 IWL_ERROR("Error sending %s: Already sending a host command\n",
772 get_cmd_string(cmd->id));
773 return -EBUSY;
774 }
775
776 set_bit(STATUS_HCMD_ACTIVE, &priv->status);
777
778 if (cmd->meta.flags & CMD_WANT_SKB)
779 cmd->meta.source = &cmd->meta;
780
781 cmd_idx = iwl4965_enqueue_hcmd(priv, cmd);
782 if (cmd_idx < 0) {
783 ret = cmd_idx;
784 IWL_ERROR("Error sending %s: iwl4965_enqueue_hcmd failed: %d\n",
785 get_cmd_string(cmd->id), ret);
786 goto out;
787 }
788
789 ret = wait_event_interruptible_timeout(priv->wait_command_queue,
790 !test_bit(STATUS_HCMD_ACTIVE, &priv->status),
791 HOST_COMPLETE_TIMEOUT);
792 if (!ret) {
793 if (test_bit(STATUS_HCMD_ACTIVE, &priv->status)) {
794 IWL_ERROR("Error sending %s: time out after %dms.\n",
795 get_cmd_string(cmd->id),
796 jiffies_to_msecs(HOST_COMPLETE_TIMEOUT));
797
798 clear_bit(STATUS_HCMD_ACTIVE, &priv->status);
799 ret = -ETIMEDOUT;
800 goto cancel;
801 }
802 }
803
804 if (test_bit(STATUS_RF_KILL_HW, &priv->status)) {
805 IWL_DEBUG_INFO("Command %s aborted: RF KILL Switch\n",
806 get_cmd_string(cmd->id));
807 ret = -ECANCELED;
808 goto fail;
809 }
810 if (test_bit(STATUS_FW_ERROR, &priv->status)) {
811 IWL_DEBUG_INFO("Command %s failed: FW Error\n",
812 get_cmd_string(cmd->id));
813 ret = -EIO;
814 goto fail;
815 }
816 if ((cmd->meta.flags & CMD_WANT_SKB) && !cmd->meta.u.skb) {
817 IWL_ERROR("Error: Response NULL in '%s'\n",
818 get_cmd_string(cmd->id));
819 ret = -EIO;
820 goto out;
821 }
822
823 ret = 0;
824 goto out;
825
826 cancel:
827 if (cmd->meta.flags & CMD_WANT_SKB) {
828 struct iwl4965_cmd *qcmd;
829
830 /* Cancel the CMD_WANT_SKB flag for the cmd in the
831 * TX cmd queue. Otherwise in case the cmd comes
832 * in later, it will possibly set an invalid
833 * address (cmd->meta.source). */
834 qcmd = &priv->txq[IWL_CMD_QUEUE_NUM].cmd[cmd_idx];
835 qcmd->meta.flags &= ~CMD_WANT_SKB;
836 }
837 fail:
838 if (cmd->meta.u.skb) {
839 dev_kfree_skb_any(cmd->meta.u.skb);
840 cmd->meta.u.skb = NULL;
841 }
842 out:
843 atomic_set(&entry, 0);
844 return ret;
845 }
846
847 int iwl4965_send_cmd(struct iwl4965_priv *priv, struct iwl4965_host_cmd *cmd)
848 {
849 if (cmd->meta.flags & CMD_ASYNC)
850 return iwl4965_send_cmd_async(priv, cmd);
851
852 return iwl4965_send_cmd_sync(priv, cmd);
853 }
854
855 int iwl4965_send_cmd_pdu(struct iwl4965_priv *priv, u8 id, u16 len, const void *data)
856 {
857 struct iwl4965_host_cmd cmd = {
858 .id = id,
859 .len = len,
860 .data = data,
861 };
862
863 return iwl4965_send_cmd_sync(priv, &cmd);
864 }
865
866 static int __must_check iwl4965_send_cmd_u32(struct iwl4965_priv *priv, u8 id, u32 val)
867 {
868 struct iwl4965_host_cmd cmd = {
869 .id = id,
870 .len = sizeof(val),
871 .data = &val,
872 };
873
874 return iwl4965_send_cmd_sync(priv, &cmd);
875 }
876
877 int iwl4965_send_statistics_request(struct iwl4965_priv *priv)
878 {
879 return iwl4965_send_cmd_u32(priv, REPLY_STATISTICS_CMD, 0);
880 }
881
882 /**
883 * iwl4965_rxon_add_station - add station into station table.
884 *
885 * there is only one AP station with id= IWL_AP_ID
886 * NOTE: mutex must be held before calling this fnction
887 */
888 static int iwl4965_rxon_add_station(struct iwl4965_priv *priv,
889 const u8 *addr, int is_ap)
890 {
891 u8 sta_id;
892
893 /* Add station to device's station table */
894 #ifdef CONFIG_IWL4965_HT
895 struct ieee80211_conf *conf = &priv->hw->conf;
896 struct ieee80211_ht_info *cur_ht_config = &conf->ht_conf;
897
898 if ((is_ap) &&
899 (conf->flags & IEEE80211_CONF_SUPPORT_HT_MODE) &&
900 (priv->iw_mode == IEEE80211_IF_TYPE_STA))
901 sta_id = iwl4965_add_station_flags(priv, addr, is_ap,
902 0, cur_ht_config);
903 else
904 #endif /* CONFIG_IWL4965_HT */
905 sta_id = iwl4965_add_station_flags(priv, addr, is_ap,
906 0, NULL);
907
908 /* Set up default rate scaling table in device's station table */
909 iwl4965_add_station(priv, addr, is_ap);
910
911 return sta_id;
912 }
913
914 /**
915 * iwl4965_set_rxon_channel - Set the phymode and channel values in staging RXON
916 * @phymode: MODE_IEEE80211A sets to 5.2GHz; all else set to 2.4GHz
917 * @channel: Any channel valid for the requested phymode
918
919 * In addition to setting the staging RXON, priv->phymode is also set.
920 *
921 * NOTE: Does not commit to the hardware; it sets appropriate bit fields
922 * in the staging RXON flag structure based on the phymode
923 */
924 static int iwl4965_set_rxon_channel(struct iwl4965_priv *priv,
925 enum ieee80211_band band,
926 u16 channel)
927 {
928 if (!iwl4965_get_channel_info(priv, band, channel)) {
929 IWL_DEBUG_INFO("Could not set channel to %d [%d]\n",
930 channel, band);
931 return -EINVAL;
932 }
933
934 if ((le16_to_cpu(priv->staging_rxon.channel) == channel) &&
935 (priv->band == band))
936 return 0;
937
938 priv->staging_rxon.channel = cpu_to_le16(channel);
939 if (band == IEEE80211_BAND_5GHZ)
940 priv->staging_rxon.flags &= ~RXON_FLG_BAND_24G_MSK;
941 else
942 priv->staging_rxon.flags |= RXON_FLG_BAND_24G_MSK;
943
944 priv->band = band;
945
946 IWL_DEBUG_INFO("Staging channel set to %d [%d]\n", channel, band);
947
948 return 0;
949 }
950
951 /**
952 * iwl4965_check_rxon_cmd - validate RXON structure is valid
953 *
954 * NOTE: This is really only useful during development and can eventually
955 * be #ifdef'd out once the driver is stable and folks aren't actively
956 * making changes
957 */
958 static int iwl4965_check_rxon_cmd(struct iwl4965_rxon_cmd *rxon)
959 {
960 int error = 0;
961 int counter = 1;
962
963 if (rxon->flags & RXON_FLG_BAND_24G_MSK) {
964 error |= le32_to_cpu(rxon->flags &
965 (RXON_FLG_TGJ_NARROW_BAND_MSK |
966 RXON_FLG_RADAR_DETECT_MSK));
967 if (error)
968 IWL_WARNING("check 24G fields %d | %d\n",
969 counter++, error);
970 } else {
971 error |= (rxon->flags & RXON_FLG_SHORT_SLOT_MSK) ?
972 0 : le32_to_cpu(RXON_FLG_SHORT_SLOT_MSK);
973 if (error)
974 IWL_WARNING("check 52 fields %d | %d\n",
975 counter++, error);
976 error |= le32_to_cpu(rxon->flags & RXON_FLG_CCK_MSK);
977 if (error)
978 IWL_WARNING("check 52 CCK %d | %d\n",
979 counter++, error);
980 }
981 error |= (rxon->node_addr[0] | rxon->bssid_addr[0]) & 0x1;
982 if (error)
983 IWL_WARNING("check mac addr %d | %d\n", counter++, error);
984
985 /* make sure basic rates 6Mbps and 1Mbps are supported */
986 error |= (((rxon->ofdm_basic_rates & IWL_RATE_6M_MASK) == 0) &&
987 ((rxon->cck_basic_rates & IWL_RATE_1M_MASK) == 0));
988 if (error)
989 IWL_WARNING("check basic rate %d | %d\n", counter++, error);
990
991 error |= (le16_to_cpu(rxon->assoc_id) > 2007);
992 if (error)
993 IWL_WARNING("check assoc id %d | %d\n", counter++, error);
994
995 error |= ((rxon->flags & (RXON_FLG_CCK_MSK | RXON_FLG_SHORT_SLOT_MSK))
996 == (RXON_FLG_CCK_MSK | RXON_FLG_SHORT_SLOT_MSK));
997 if (error)
998 IWL_WARNING("check CCK and short slot %d | %d\n",
999 counter++, error);
1000
1001 error |= ((rxon->flags & (RXON_FLG_CCK_MSK | RXON_FLG_AUTO_DETECT_MSK))
1002 == (RXON_FLG_CCK_MSK | RXON_FLG_AUTO_DETECT_MSK));
1003 if (error)
1004 IWL_WARNING("check CCK & auto detect %d | %d\n",
1005 counter++, error);
1006
1007 error |= ((rxon->flags & (RXON_FLG_AUTO_DETECT_MSK |
1008 RXON_FLG_TGG_PROTECT_MSK)) == RXON_FLG_TGG_PROTECT_MSK);
1009 if (error)
1010 IWL_WARNING("check TGG and auto detect %d | %d\n",
1011 counter++, error);
1012
1013 if (error)
1014 IWL_WARNING("Tuning to channel %d\n",
1015 le16_to_cpu(rxon->channel));
1016
1017 if (error) {
1018 IWL_ERROR("Not a valid iwl4965_rxon_assoc_cmd field values\n");
1019 return -1;
1020 }
1021 return 0;
1022 }
1023
1024 /**
1025 * iwl4965_full_rxon_required - check if full RXON (vs RXON_ASSOC) cmd is needed
1026 * @priv: staging_rxon is compared to active_rxon
1027 *
1028 * If the RXON structure is changing enough to require a new tune,
1029 * or is clearing the RXON_FILTER_ASSOC_MSK, then return 1 to indicate that
1030 * a new tune (full RXON command, rather than RXON_ASSOC cmd) is required.
1031 */
1032 static int iwl4965_full_rxon_required(struct iwl4965_priv *priv)
1033 {
1034
1035 /* These items are only settable from the full RXON command */
1036 if (!(priv->active_rxon.filter_flags & RXON_FILTER_ASSOC_MSK) ||
1037 compare_ether_addr(priv->staging_rxon.bssid_addr,
1038 priv->active_rxon.bssid_addr) ||
1039 compare_ether_addr(priv->staging_rxon.node_addr,
1040 priv->active_rxon.node_addr) ||
1041 compare_ether_addr(priv->staging_rxon.wlap_bssid_addr,
1042 priv->active_rxon.wlap_bssid_addr) ||
1043 (priv->staging_rxon.dev_type != priv->active_rxon.dev_type) ||
1044 (priv->staging_rxon.channel != priv->active_rxon.channel) ||
1045 (priv->staging_rxon.air_propagation !=
1046 priv->active_rxon.air_propagation) ||
1047 (priv->staging_rxon.ofdm_ht_single_stream_basic_rates !=
1048 priv->active_rxon.ofdm_ht_single_stream_basic_rates) ||
1049 (priv->staging_rxon.ofdm_ht_dual_stream_basic_rates !=
1050 priv->active_rxon.ofdm_ht_dual_stream_basic_rates) ||
1051 (priv->staging_rxon.rx_chain != priv->active_rxon.rx_chain) ||
1052 (priv->staging_rxon.assoc_id != priv->active_rxon.assoc_id))
1053 return 1;
1054
1055 /* flags, filter_flags, ofdm_basic_rates, and cck_basic_rates can
1056 * be updated with the RXON_ASSOC command -- however only some
1057 * flag transitions are allowed using RXON_ASSOC */
1058
1059 /* Check if we are not switching bands */
1060 if ((priv->staging_rxon.flags & RXON_FLG_BAND_24G_MSK) !=
1061 (priv->active_rxon.flags & RXON_FLG_BAND_24G_MSK))
1062 return 1;
1063
1064 /* Check if we are switching association toggle */
1065 if ((priv->staging_rxon.filter_flags & RXON_FILTER_ASSOC_MSK) !=
1066 (priv->active_rxon.filter_flags & RXON_FILTER_ASSOC_MSK))
1067 return 1;
1068
1069 return 0;
1070 }
1071
1072 static int iwl4965_send_rxon_assoc(struct iwl4965_priv *priv)
1073 {
1074 int rc = 0;
1075 struct iwl4965_rx_packet *res = NULL;
1076 struct iwl4965_rxon_assoc_cmd rxon_assoc;
1077 struct iwl4965_host_cmd cmd = {
1078 .id = REPLY_RXON_ASSOC,
1079 .len = sizeof(rxon_assoc),
1080 .meta.flags = CMD_WANT_SKB,
1081 .data = &rxon_assoc,
1082 };
1083 const struct iwl4965_rxon_cmd *rxon1 = &priv->staging_rxon;
1084 const struct iwl4965_rxon_cmd *rxon2 = &priv->active_rxon;
1085
1086 if ((rxon1->flags == rxon2->flags) &&
1087 (rxon1->filter_flags == rxon2->filter_flags) &&
1088 (rxon1->cck_basic_rates == rxon2->cck_basic_rates) &&
1089 (rxon1->ofdm_ht_single_stream_basic_rates ==
1090 rxon2->ofdm_ht_single_stream_basic_rates) &&
1091 (rxon1->ofdm_ht_dual_stream_basic_rates ==
1092 rxon2->ofdm_ht_dual_stream_basic_rates) &&
1093 (rxon1->rx_chain == rxon2->rx_chain) &&
1094 (rxon1->ofdm_basic_rates == rxon2->ofdm_basic_rates)) {
1095 IWL_DEBUG_INFO("Using current RXON_ASSOC. Not resending.\n");
1096 return 0;
1097 }
1098
1099 rxon_assoc.flags = priv->staging_rxon.flags;
1100 rxon_assoc.filter_flags = priv->staging_rxon.filter_flags;
1101 rxon_assoc.ofdm_basic_rates = priv->staging_rxon.ofdm_basic_rates;
1102 rxon_assoc.cck_basic_rates = priv->staging_rxon.cck_basic_rates;
1103 rxon_assoc.reserved = 0;
1104 rxon_assoc.ofdm_ht_single_stream_basic_rates =
1105 priv->staging_rxon.ofdm_ht_single_stream_basic_rates;
1106 rxon_assoc.ofdm_ht_dual_stream_basic_rates =
1107 priv->staging_rxon.ofdm_ht_dual_stream_basic_rates;
1108 rxon_assoc.rx_chain_select_flags = priv->staging_rxon.rx_chain;
1109
1110 rc = iwl4965_send_cmd_sync(priv, &cmd);
1111 if (rc)
1112 return rc;
1113
1114 res = (struct iwl4965_rx_packet *)cmd.meta.u.skb->data;
1115 if (res->hdr.flags & IWL_CMD_FAILED_MSK) {
1116 IWL_ERROR("Bad return from REPLY_RXON_ASSOC command\n");
1117 rc = -EIO;
1118 }
1119
1120 priv->alloc_rxb_skb--;
1121 dev_kfree_skb_any(cmd.meta.u.skb);
1122
1123 return rc;
1124 }
1125
1126 /**
1127 * iwl4965_commit_rxon - commit staging_rxon to hardware
1128 *
1129 * The RXON command in staging_rxon is committed to the hardware and
1130 * the active_rxon structure is updated with the new data. This
1131 * function correctly transitions out of the RXON_ASSOC_MSK state if
1132 * a HW tune is required based on the RXON structure changes.
1133 */
1134 static int iwl4965_commit_rxon(struct iwl4965_priv *priv)
1135 {
1136 /* cast away the const for active_rxon in this function */
1137 struct iwl4965_rxon_cmd *active_rxon = (void *)&priv->active_rxon;
1138 DECLARE_MAC_BUF(mac);
1139 int rc = 0;
1140
1141 if (!iwl4965_is_alive(priv))
1142 return -1;
1143
1144 /* always get timestamp with Rx frame */
1145 priv->staging_rxon.flags |= RXON_FLG_TSF2HOST_MSK;
1146
1147 rc = iwl4965_check_rxon_cmd(&priv->staging_rxon);
1148 if (rc) {
1149 IWL_ERROR("Invalid RXON configuration. Not committing.\n");
1150 return -EINVAL;
1151 }
1152
1153 /* If we don't need to send a full RXON, we can use
1154 * iwl4965_rxon_assoc_cmd which is used to reconfigure filter
1155 * and other flags for the current radio configuration. */
1156 if (!iwl4965_full_rxon_required(priv)) {
1157 rc = iwl4965_send_rxon_assoc(priv);
1158 if (rc) {
1159 IWL_ERROR("Error setting RXON_ASSOC "
1160 "configuration (%d).\n", rc);
1161 return rc;
1162 }
1163
1164 memcpy(active_rxon, &priv->staging_rxon, sizeof(*active_rxon));
1165
1166 return 0;
1167 }
1168
1169 /* station table will be cleared */
1170 priv->assoc_station_added = 0;
1171
1172 #ifdef CONFIG_IWL4965_SENSITIVITY
1173 priv->sensitivity_data.state = IWL_SENS_CALIB_NEED_REINIT;
1174 if (!priv->error_recovering)
1175 priv->start_calib = 0;
1176
1177 iwl4965_init_sensitivity(priv, CMD_ASYNC, 1);
1178 #endif /* CONFIG_IWL4965_SENSITIVITY */
1179
1180 /* If we are currently associated and the new config requires
1181 * an RXON_ASSOC and the new config wants the associated mask enabled,
1182 * we must clear the associated from the active configuration
1183 * before we apply the new config */
1184 if (iwl4965_is_associated(priv) &&
1185 (priv->staging_rxon.filter_flags & RXON_FILTER_ASSOC_MSK)) {
1186 IWL_DEBUG_INFO("Toggling associated bit on current RXON\n");
1187 active_rxon->filter_flags &= ~RXON_FILTER_ASSOC_MSK;
1188
1189 rc = iwl4965_send_cmd_pdu(priv, REPLY_RXON,
1190 sizeof(struct iwl4965_rxon_cmd),
1191 &priv->active_rxon);
1192
1193 /* If the mask clearing failed then we set
1194 * active_rxon back to what it was previously */
1195 if (rc) {
1196 active_rxon->filter_flags |= RXON_FILTER_ASSOC_MSK;
1197 IWL_ERROR("Error clearing ASSOC_MSK on current "
1198 "configuration (%d).\n", rc);
1199 return rc;
1200 }
1201 }
1202
1203 IWL_DEBUG_INFO("Sending RXON\n"
1204 "* with%s RXON_FILTER_ASSOC_MSK\n"
1205 "* channel = %d\n"
1206 "* bssid = %s\n",
1207 ((priv->staging_rxon.filter_flags &
1208 RXON_FILTER_ASSOC_MSK) ? "" : "out"),
1209 le16_to_cpu(priv->staging_rxon.channel),
1210 print_mac(mac, priv->staging_rxon.bssid_addr));
1211
1212 /* Apply the new configuration */
1213 rc = iwl4965_send_cmd_pdu(priv, REPLY_RXON,
1214 sizeof(struct iwl4965_rxon_cmd), &priv->staging_rxon);
1215 if (rc) {
1216 IWL_ERROR("Error setting new configuration (%d).\n", rc);
1217 return rc;
1218 }
1219
1220 iwl4965_clear_stations_table(priv);
1221
1222 #ifdef CONFIG_IWL4965_SENSITIVITY
1223 if (!priv->error_recovering)
1224 priv->start_calib = 0;
1225
1226 priv->sensitivity_data.state = IWL_SENS_CALIB_NEED_REINIT;
1227 iwl4965_init_sensitivity(priv, CMD_ASYNC, 1);
1228 #endif /* CONFIG_IWL4965_SENSITIVITY */
1229
1230 memcpy(active_rxon, &priv->staging_rxon, sizeof(*active_rxon));
1231
1232 /* If we issue a new RXON command which required a tune then we must
1233 * send a new TXPOWER command or we won't be able to Tx any frames */
1234 rc = iwl4965_hw_reg_send_txpower(priv);
1235 if (rc) {
1236 IWL_ERROR("Error setting Tx power (%d).\n", rc);
1237 return rc;
1238 }
1239
1240 /* Add the broadcast address so we can send broadcast frames */
1241 if (iwl4965_rxon_add_station(priv, iwl4965_broadcast_addr, 0) ==
1242 IWL_INVALID_STATION) {
1243 IWL_ERROR("Error adding BROADCAST address for transmit.\n");
1244 return -EIO;
1245 }
1246
1247 /* If we have set the ASSOC_MSK and we are in BSS mode then
1248 * add the IWL_AP_ID to the station rate table */
1249 if (iwl4965_is_associated(priv) &&
1250 (priv->iw_mode == IEEE80211_IF_TYPE_STA)) {
1251 if (iwl4965_rxon_add_station(priv, priv->active_rxon.bssid_addr, 1)
1252 == IWL_INVALID_STATION) {
1253 IWL_ERROR("Error adding AP address for transmit.\n");
1254 return -EIO;
1255 }
1256 priv->assoc_station_added = 1;
1257 }
1258
1259 return 0;
1260 }
1261
1262 static int iwl4965_send_bt_config(struct iwl4965_priv *priv)
1263 {
1264 struct iwl4965_bt_cmd bt_cmd = {
1265 .flags = 3,
1266 .lead_time = 0xAA,
1267 .max_kill = 1,
1268 .kill_ack_mask = 0,
1269 .kill_cts_mask = 0,
1270 };
1271
1272 return iwl4965_send_cmd_pdu(priv, REPLY_BT_CONFIG,
1273 sizeof(struct iwl4965_bt_cmd), &bt_cmd);
1274 }
1275
1276 static int iwl4965_send_scan_abort(struct iwl4965_priv *priv)
1277 {
1278 int rc = 0;
1279 struct iwl4965_rx_packet *res;
1280 struct iwl4965_host_cmd cmd = {
1281 .id = REPLY_SCAN_ABORT_CMD,
1282 .meta.flags = CMD_WANT_SKB,
1283 };
1284
1285 /* If there isn't a scan actively going on in the hardware
1286 * then we are in between scan bands and not actually
1287 * actively scanning, so don't send the abort command */
1288 if (!test_bit(STATUS_SCAN_HW, &priv->status)) {
1289 clear_bit(STATUS_SCAN_ABORTING, &priv->status);
1290 return 0;
1291 }
1292
1293 rc = iwl4965_send_cmd_sync(priv, &cmd);
1294 if (rc) {
1295 clear_bit(STATUS_SCAN_ABORTING, &priv->status);
1296 return rc;
1297 }
1298
1299 res = (struct iwl4965_rx_packet *)cmd.meta.u.skb->data;
1300 if (res->u.status != CAN_ABORT_STATUS) {
1301 /* The scan abort will return 1 for success or
1302 * 2 for "failure". A failure condition can be
1303 * due to simply not being in an active scan which
1304 * can occur if we send the scan abort before we
1305 * the microcode has notified us that a scan is
1306 * completed. */
1307 IWL_DEBUG_INFO("SCAN_ABORT returned %d.\n", res->u.status);
1308 clear_bit(STATUS_SCAN_ABORTING, &priv->status);
1309 clear_bit(STATUS_SCAN_HW, &priv->status);
1310 }
1311
1312 dev_kfree_skb_any(cmd.meta.u.skb);
1313
1314 return rc;
1315 }
1316
1317 static int iwl4965_card_state_sync_callback(struct iwl4965_priv *priv,
1318 struct iwl4965_cmd *cmd,
1319 struct sk_buff *skb)
1320 {
1321 return 1;
1322 }
1323
1324 /*
1325 * CARD_STATE_CMD
1326 *
1327 * Use: Sets the device's internal card state to enable, disable, or halt
1328 *
1329 * When in the 'enable' state the card operates as normal.
1330 * When in the 'disable' state, the card enters into a low power mode.
1331 * When in the 'halt' state, the card is shut down and must be fully
1332 * restarted to come back on.
1333 */
1334 static int iwl4965_send_card_state(struct iwl4965_priv *priv, u32 flags, u8 meta_flag)
1335 {
1336 struct iwl4965_host_cmd cmd = {
1337 .id = REPLY_CARD_STATE_CMD,
1338 .len = sizeof(u32),
1339 .data = &flags,
1340 .meta.flags = meta_flag,
1341 };
1342
1343 if (meta_flag & CMD_ASYNC)
1344 cmd.meta.u.callback = iwl4965_card_state_sync_callback;
1345
1346 return iwl4965_send_cmd(priv, &cmd);
1347 }
1348
1349 static int iwl4965_add_sta_sync_callback(struct iwl4965_priv *priv,
1350 struct iwl4965_cmd *cmd, struct sk_buff *skb)
1351 {
1352 struct iwl4965_rx_packet *res = NULL;
1353
1354 if (!skb) {
1355 IWL_ERROR("Error: Response NULL in REPLY_ADD_STA.\n");
1356 return 1;
1357 }
1358
1359 res = (struct iwl4965_rx_packet *)skb->data;
1360 if (res->hdr.flags & IWL_CMD_FAILED_MSK) {
1361 IWL_ERROR("Bad return from REPLY_ADD_STA (0x%08X)\n",
1362 res->hdr.flags);
1363 return 1;
1364 }
1365
1366 switch (res->u.add_sta.status) {
1367 case ADD_STA_SUCCESS_MSK:
1368 break;
1369 default:
1370 break;
1371 }
1372
1373 /* We didn't cache the SKB; let the caller free it */
1374 return 1;
1375 }
1376
1377 int iwl4965_send_add_station(struct iwl4965_priv *priv,
1378 struct iwl4965_addsta_cmd *sta, u8 flags)
1379 {
1380 struct iwl4965_rx_packet *res = NULL;
1381 int rc = 0;
1382 struct iwl4965_host_cmd cmd = {
1383 .id = REPLY_ADD_STA,
1384 .len = sizeof(struct iwl4965_addsta_cmd),
1385 .meta.flags = flags,
1386 .data = sta,
1387 };
1388
1389 if (flags & CMD_ASYNC)
1390 cmd.meta.u.callback = iwl4965_add_sta_sync_callback;
1391 else
1392 cmd.meta.flags |= CMD_WANT_SKB;
1393
1394 rc = iwl4965_send_cmd(priv, &cmd);
1395
1396 if (rc || (flags & CMD_ASYNC))
1397 return rc;
1398
1399 res = (struct iwl4965_rx_packet *)cmd.meta.u.skb->data;
1400 if (res->hdr.flags & IWL_CMD_FAILED_MSK) {
1401 IWL_ERROR("Bad return from REPLY_ADD_STA (0x%08X)\n",
1402 res->hdr.flags);
1403 rc = -EIO;
1404 }
1405
1406 if (rc == 0) {
1407 switch (res->u.add_sta.status) {
1408 case ADD_STA_SUCCESS_MSK:
1409 IWL_DEBUG_INFO("REPLY_ADD_STA PASSED\n");
1410 break;
1411 default:
1412 rc = -EIO;
1413 IWL_WARNING("REPLY_ADD_STA failed\n");
1414 break;
1415 }
1416 }
1417
1418 priv->alloc_rxb_skb--;
1419 dev_kfree_skb_any(cmd.meta.u.skb);
1420
1421 return rc;
1422 }
1423
1424 static int iwl4965_update_sta_key_info(struct iwl4965_priv *priv,
1425 struct ieee80211_key_conf *keyconf,
1426 u8 sta_id)
1427 {
1428 unsigned long flags;
1429 __le16 key_flags = 0;
1430
1431 switch (keyconf->alg) {
1432 case ALG_CCMP:
1433 key_flags |= STA_KEY_FLG_CCMP;
1434 key_flags |= cpu_to_le16(
1435 keyconf->keyidx << STA_KEY_FLG_KEYID_POS);
1436 key_flags &= ~STA_KEY_FLG_INVALID;
1437 break;
1438 case ALG_TKIP:
1439 case ALG_WEP:
1440 default:
1441 return -EINVAL;
1442 }
1443 spin_lock_irqsave(&priv->sta_lock, flags);
1444 priv->stations[sta_id].keyinfo.alg = keyconf->alg;
1445 priv->stations[sta_id].keyinfo.keylen = keyconf->keylen;
1446 memcpy(priv->stations[sta_id].keyinfo.key, keyconf->key,
1447 keyconf->keylen);
1448
1449 memcpy(priv->stations[sta_id].sta.key.key, keyconf->key,
1450 keyconf->keylen);
1451 priv->stations[sta_id].sta.key.key_flags = key_flags;
1452 priv->stations[sta_id].sta.sta.modify_mask = STA_MODIFY_KEY_MASK;
1453 priv->stations[sta_id].sta.mode = STA_CONTROL_MODIFY_MSK;
1454
1455 spin_unlock_irqrestore(&priv->sta_lock, flags);
1456
1457 IWL_DEBUG_INFO("hwcrypto: modify ucode station key info\n");
1458 iwl4965_send_add_station(priv, &priv->stations[sta_id].sta, 0);
1459 return 0;
1460 }
1461
1462 static int iwl4965_clear_sta_key_info(struct iwl4965_priv *priv, u8 sta_id)
1463 {
1464 unsigned long flags;
1465
1466 spin_lock_irqsave(&priv->sta_lock, flags);
1467 memset(&priv->stations[sta_id].keyinfo, 0, sizeof(struct iwl4965_hw_key));
1468 memset(&priv->stations[sta_id].sta.key, 0, sizeof(struct iwl4965_keyinfo));
1469 priv->stations[sta_id].sta.key.key_flags = STA_KEY_FLG_NO_ENC;
1470 priv->stations[sta_id].sta.sta.modify_mask = STA_MODIFY_KEY_MASK;
1471 priv->stations[sta_id].sta.mode = STA_CONTROL_MODIFY_MSK;
1472 spin_unlock_irqrestore(&priv->sta_lock, flags);
1473
1474 IWL_DEBUG_INFO("hwcrypto: clear ucode station key info\n");
1475 iwl4965_send_add_station(priv, &priv->stations[sta_id].sta, 0);
1476 return 0;
1477 }
1478
1479 static void iwl4965_clear_free_frames(struct iwl4965_priv *priv)
1480 {
1481 struct list_head *element;
1482
1483 IWL_DEBUG_INFO("%d frames on pre-allocated heap on clear.\n",
1484 priv->frames_count);
1485
1486 while (!list_empty(&priv->free_frames)) {
1487 element = priv->free_frames.next;
1488 list_del(element);
1489 kfree(list_entry(element, struct iwl4965_frame, list));
1490 priv->frames_count--;
1491 }
1492
1493 if (priv->frames_count) {
1494 IWL_WARNING("%d frames still in use. Did we lose one?\n",
1495 priv->frames_count);
1496 priv->frames_count = 0;
1497 }
1498 }
1499
1500 static struct iwl4965_frame *iwl4965_get_free_frame(struct iwl4965_priv *priv)
1501 {
1502 struct iwl4965_frame *frame;
1503 struct list_head *element;
1504 if (list_empty(&priv->free_frames)) {
1505 frame = kzalloc(sizeof(*frame), GFP_KERNEL);
1506 if (!frame) {
1507 IWL_ERROR("Could not allocate frame!\n");
1508 return NULL;
1509 }
1510
1511 priv->frames_count++;
1512 return frame;
1513 }
1514
1515 element = priv->free_frames.next;
1516 list_del(element);
1517 return list_entry(element, struct iwl4965_frame, list);
1518 }
1519
1520 static void iwl4965_free_frame(struct iwl4965_priv *priv, struct iwl4965_frame *frame)
1521 {
1522 memset(frame, 0, sizeof(*frame));
1523 list_add(&frame->list, &priv->free_frames);
1524 }
1525
1526 unsigned int iwl4965_fill_beacon_frame(struct iwl4965_priv *priv,
1527 struct ieee80211_hdr *hdr,
1528 const u8 *dest, int left)
1529 {
1530
1531 if (!iwl4965_is_associated(priv) || !priv->ibss_beacon ||
1532 ((priv->iw_mode != IEEE80211_IF_TYPE_IBSS) &&
1533 (priv->iw_mode != IEEE80211_IF_TYPE_AP)))
1534 return 0;
1535
1536 if (priv->ibss_beacon->len > left)
1537 return 0;
1538
1539 memcpy(hdr, priv->ibss_beacon->data, priv->ibss_beacon->len);
1540
1541 return priv->ibss_beacon->len;
1542 }
1543
1544 static u8 iwl4965_rate_get_lowest_plcp(int rate_mask)
1545 {
1546 u8 i;
1547
1548 for (i = IWL_RATE_1M_INDEX; i != IWL_RATE_INVALID;
1549 i = iwl4965_rates[i].next_ieee) {
1550 if (rate_mask & (1 << i))
1551 return iwl4965_rates[i].plcp;
1552 }
1553
1554 return IWL_RATE_INVALID;
1555 }
1556
1557 static int iwl4965_send_beacon_cmd(struct iwl4965_priv *priv)
1558 {
1559 struct iwl4965_frame *frame;
1560 unsigned int frame_size;
1561 int rc;
1562 u8 rate;
1563
1564 frame = iwl4965_get_free_frame(priv);
1565
1566 if (!frame) {
1567 IWL_ERROR("Could not obtain free frame buffer for beacon "
1568 "command.\n");
1569 return -ENOMEM;
1570 }
1571
1572 if (!(priv->staging_rxon.flags & RXON_FLG_BAND_24G_MSK)) {
1573 rate = iwl4965_rate_get_lowest_plcp(priv->active_rate_basic &
1574 0xFF0);
1575 if (rate == IWL_INVALID_RATE)
1576 rate = IWL_RATE_6M_PLCP;
1577 } else {
1578 rate = iwl4965_rate_get_lowest_plcp(priv->active_rate_basic & 0xF);
1579 if (rate == IWL_INVALID_RATE)
1580 rate = IWL_RATE_1M_PLCP;
1581 }
1582
1583 frame_size = iwl4965_hw_get_beacon_cmd(priv, frame, rate);
1584
1585 rc = iwl4965_send_cmd_pdu(priv, REPLY_TX_BEACON, frame_size,
1586 &frame->u.cmd[0]);
1587
1588 iwl4965_free_frame(priv, frame);
1589
1590 return rc;
1591 }
1592
1593 /******************************************************************************
1594 *
1595 * EEPROM related functions
1596 *
1597 ******************************************************************************/
1598
1599 static void get_eeprom_mac(struct iwl4965_priv *priv, u8 *mac)
1600 {
1601 memcpy(mac, priv->eeprom.mac_address, 6);
1602 }
1603
1604 static inline void iwl4965_eeprom_release_semaphore(struct iwl4965_priv *priv)
1605 {
1606 iwl4965_clear_bit(priv, CSR_HW_IF_CONFIG_REG,
1607 CSR_HW_IF_CONFIG_REG_BIT_EEPROM_OWN_SEM);
1608 }
1609
1610 /**
1611 * iwl4965_eeprom_init - read EEPROM contents
1612 *
1613 * Load the EEPROM contents from adapter into priv->eeprom
1614 *
1615 * NOTE: This routine uses the non-debug IO access functions.
1616 */
1617 int iwl4965_eeprom_init(struct iwl4965_priv *priv)
1618 {
1619 u16 *e = (u16 *)&priv->eeprom;
1620 u32 gp = iwl4965_read32(priv, CSR_EEPROM_GP);
1621 u32 r;
1622 int sz = sizeof(priv->eeprom);
1623 int rc;
1624 int i;
1625 u16 addr;
1626
1627 /* The EEPROM structure has several padding buffers within it
1628 * and when adding new EEPROM maps is subject to programmer errors
1629 * which may be very difficult to identify without explicitly
1630 * checking the resulting size of the eeprom map. */
1631 BUILD_BUG_ON(sizeof(priv->eeprom) != IWL_EEPROM_IMAGE_SIZE);
1632
1633 if ((gp & CSR_EEPROM_GP_VALID_MSK) == CSR_EEPROM_GP_BAD_SIGNATURE) {
1634 IWL_ERROR("EEPROM not found, EEPROM_GP=0x%08x", gp);
1635 return -ENOENT;
1636 }
1637
1638 /* Make sure driver (instead of uCode) is allowed to read EEPROM */
1639 rc = iwl4965_eeprom_acquire_semaphore(priv);
1640 if (rc < 0) {
1641 IWL_ERROR("Failed to acquire EEPROM semaphore.\n");
1642 return -ENOENT;
1643 }
1644
1645 /* eeprom is an array of 16bit values */
1646 for (addr = 0; addr < sz; addr += sizeof(u16)) {
1647 _iwl4965_write32(priv, CSR_EEPROM_REG, addr << 1);
1648 _iwl4965_clear_bit(priv, CSR_EEPROM_REG, CSR_EEPROM_REG_BIT_CMD);
1649
1650 for (i = 0; i < IWL_EEPROM_ACCESS_TIMEOUT;
1651 i += IWL_EEPROM_ACCESS_DELAY) {
1652 r = _iwl4965_read_direct32(priv, CSR_EEPROM_REG);
1653 if (r & CSR_EEPROM_REG_READ_VALID_MSK)
1654 break;
1655 udelay(IWL_EEPROM_ACCESS_DELAY);
1656 }
1657
1658 if (!(r & CSR_EEPROM_REG_READ_VALID_MSK)) {
1659 IWL_ERROR("Time out reading EEPROM[%d]", addr);
1660 rc = -ETIMEDOUT;
1661 goto done;
1662 }
1663 e[addr / 2] = le16_to_cpu((__force __le16)(r >> 16));
1664 }
1665 rc = 0;
1666
1667 done:
1668 iwl4965_eeprom_release_semaphore(priv);
1669 return rc;
1670 }
1671
1672 /******************************************************************************
1673 *
1674 * Misc. internal state and helper functions
1675 *
1676 ******************************************************************************/
1677
1678 static void iwl4965_unset_hw_setting(struct iwl4965_priv *priv)
1679 {
1680 if (priv->hw_setting.shared_virt)
1681 pci_free_consistent(priv->pci_dev,
1682 sizeof(struct iwl4965_shared),
1683 priv->hw_setting.shared_virt,
1684 priv->hw_setting.shared_phys);
1685 }
1686
1687 /**
1688 * iwl4965_supported_rate_to_ie - fill in the supported rate in IE field
1689 *
1690 * return : set the bit for each supported rate insert in ie
1691 */
1692 static u16 iwl4965_supported_rate_to_ie(u8 *ie, u16 supported_rate,
1693 u16 basic_rate, int *left)
1694 {
1695 u16 ret_rates = 0, bit;
1696 int i;
1697 u8 *cnt = ie;
1698 u8 *rates = ie + 1;
1699
1700 for (bit = 1, i = 0; i < IWL_RATE_COUNT; i++, bit <<= 1) {
1701 if (bit & supported_rate) {
1702 ret_rates |= bit;
1703 rates[*cnt] = iwl4965_rates[i].ieee |
1704 ((bit & basic_rate) ? 0x80 : 0x00);
1705 (*cnt)++;
1706 (*left)--;
1707 if ((*left <= 0) ||
1708 (*cnt >= IWL_SUPPORTED_RATES_IE_LEN))
1709 break;
1710 }
1711 }
1712
1713 return ret_rates;
1714 }
1715
1716 /**
1717 * iwl4965_fill_probe_req - fill in all required fields and IE for probe request
1718 */
1719 static u16 iwl4965_fill_probe_req(struct iwl4965_priv *priv,
1720 enum ieee80211_band band,
1721 struct ieee80211_mgmt *frame,
1722 int left, int is_direct)
1723 {
1724 int len = 0;
1725 u8 *pos = NULL;
1726 u16 active_rates, ret_rates, cck_rates, active_rate_basic;
1727 #ifdef CONFIG_IWL4965_HT
1728 const struct ieee80211_supported_band *sband =
1729 iwl4965_get_hw_mode(priv, band);
1730 #endif /* CONFIG_IWL4965_HT */
1731
1732 /* Make sure there is enough space for the probe request,
1733 * two mandatory IEs and the data */
1734 left -= 24;
1735 if (left < 0)
1736 return 0;
1737 len += 24;
1738
1739 frame->frame_control = cpu_to_le16(IEEE80211_STYPE_PROBE_REQ);
1740 memcpy(frame->da, iwl4965_broadcast_addr, ETH_ALEN);
1741 memcpy(frame->sa, priv->mac_addr, ETH_ALEN);
1742 memcpy(frame->bssid, iwl4965_broadcast_addr, ETH_ALEN);
1743 frame->seq_ctrl = 0;
1744
1745 /* fill in our indirect SSID IE */
1746 /* ...next IE... */
1747
1748 left -= 2;
1749 if (left < 0)
1750 return 0;
1751 len += 2;
1752 pos = &(frame->u.probe_req.variable[0]);
1753 *pos++ = WLAN_EID_SSID;
1754 *pos++ = 0;
1755
1756 /* fill in our direct SSID IE... */
1757 if (is_direct) {
1758 /* ...next IE... */
1759 left -= 2 + priv->essid_len;
1760 if (left < 0)
1761 return 0;
1762 /* ... fill it in... */
1763 *pos++ = WLAN_EID_SSID;
1764 *pos++ = priv->essid_len;
1765 memcpy(pos, priv->essid, priv->essid_len);
1766 pos += priv->essid_len;
1767 len += 2 + priv->essid_len;
1768 }
1769
1770 /* fill in supported rate */
1771 /* ...next IE... */
1772 left -= 2;
1773 if (left < 0)
1774 return 0;
1775
1776 /* ... fill it in... */
1777 *pos++ = WLAN_EID_SUPP_RATES;
1778 *pos = 0;
1779
1780 /* exclude 60M rate */
1781 active_rates = priv->rates_mask;
1782 active_rates &= ~IWL_RATE_60M_MASK;
1783
1784 active_rate_basic = active_rates & IWL_BASIC_RATES_MASK;
1785
1786 cck_rates = IWL_CCK_RATES_MASK & active_rates;
1787 ret_rates = iwl4965_supported_rate_to_ie(pos, cck_rates,
1788 active_rate_basic, &left);
1789 active_rates &= ~ret_rates;
1790
1791 ret_rates = iwl4965_supported_rate_to_ie(pos, active_rates,
1792 active_rate_basic, &left);
1793 active_rates &= ~ret_rates;
1794
1795 len += 2 + *pos;
1796 pos += (*pos) + 1;
1797 if (active_rates == 0)
1798 goto fill_end;
1799
1800 /* fill in supported extended rate */
1801 /* ...next IE... */
1802 left -= 2;
1803 if (left < 0)
1804 return 0;
1805 /* ... fill it in... */
1806 *pos++ = WLAN_EID_EXT_SUPP_RATES;
1807 *pos = 0;
1808 iwl4965_supported_rate_to_ie(pos, active_rates,
1809 active_rate_basic, &left);
1810 if (*pos > 0)
1811 len += 2 + *pos;
1812
1813 #ifdef CONFIG_IWL4965_HT
1814 if (sband && sband->ht_info.ht_supported) {
1815 struct ieee80211_ht_cap *ht_cap;
1816 pos += (*pos) + 1;
1817 *pos++ = WLAN_EID_HT_CAPABILITY;
1818 *pos++ = sizeof(struct ieee80211_ht_cap);
1819 ht_cap = (struct ieee80211_ht_cap *)pos;
1820 ht_cap->cap_info = cpu_to_le16(sband->ht_info.cap);
1821 memcpy(ht_cap->supp_mcs_set, sband->ht_info.supp_mcs_set, 16);
1822 ht_cap->ampdu_params_info =(sband->ht_info.ampdu_factor &
1823 IEEE80211_HT_CAP_AMPDU_FACTOR) |
1824 ((sband->ht_info.ampdu_density << 2) &
1825 IEEE80211_HT_CAP_AMPDU_DENSITY);
1826 len += 2 + sizeof(struct ieee80211_ht_cap);
1827 }
1828 #endif /*CONFIG_IWL4965_HT */
1829
1830 fill_end:
1831 return (u16)len;
1832 }
1833
1834 /*
1835 * QoS support
1836 */
1837 static int iwl4965_send_qos_params_command(struct iwl4965_priv *priv,
1838 struct iwl4965_qosparam_cmd *qos)
1839 {
1840
1841 return iwl4965_send_cmd_pdu(priv, REPLY_QOS_PARAM,
1842 sizeof(struct iwl4965_qosparam_cmd), qos);
1843 }
1844
1845 static void iwl4965_reset_qos(struct iwl4965_priv *priv)
1846 {
1847 u16 cw_min = 15;
1848 u16 cw_max = 1023;
1849 u8 aifs = 2;
1850 u8 is_legacy = 0;
1851 unsigned long flags;
1852 int i;
1853
1854 spin_lock_irqsave(&priv->lock, flags);
1855 priv->qos_data.qos_active = 0;
1856
1857 if (priv->iw_mode == IEEE80211_IF_TYPE_IBSS) {
1858 if (priv->qos_data.qos_enable)
1859 priv->qos_data.qos_active = 1;
1860 if (!(priv->active_rate & 0xfff0)) {
1861 cw_min = 31;
1862 is_legacy = 1;
1863 }
1864 } else if (priv->iw_mode == IEEE80211_IF_TYPE_AP) {
1865 if (priv->qos_data.qos_enable)
1866 priv->qos_data.qos_active = 1;
1867 } else if (!(priv->staging_rxon.flags & RXON_FLG_SHORT_SLOT_MSK)) {
1868 cw_min = 31;
1869 is_legacy = 1;
1870 }
1871
1872 if (priv->qos_data.qos_active)
1873 aifs = 3;
1874
1875 priv->qos_data.def_qos_parm.ac[0].cw_min = cpu_to_le16(cw_min);
1876 priv->qos_data.def_qos_parm.ac[0].cw_max = cpu_to_le16(cw_max);
1877 priv->qos_data.def_qos_parm.ac[0].aifsn = aifs;
1878 priv->qos_data.def_qos_parm.ac[0].edca_txop = 0;
1879 priv->qos_data.def_qos_parm.ac[0].reserved1 = 0;
1880
1881 if (priv->qos_data.qos_active) {
1882 i = 1;
1883 priv->qos_data.def_qos_parm.ac[i].cw_min = cpu_to_le16(cw_min);
1884 priv->qos_data.def_qos_parm.ac[i].cw_max = cpu_to_le16(cw_max);
1885 priv->qos_data.def_qos_parm.ac[i].aifsn = 7;
1886 priv->qos_data.def_qos_parm.ac[i].edca_txop = 0;
1887 priv->qos_data.def_qos_parm.ac[i].reserved1 = 0;
1888
1889 i = 2;
1890 priv->qos_data.def_qos_parm.ac[i].cw_min =
1891 cpu_to_le16((cw_min + 1) / 2 - 1);
1892 priv->qos_data.def_qos_parm.ac[i].cw_max =
1893 cpu_to_le16(cw_max);
1894 priv->qos_data.def_qos_parm.ac[i].aifsn = 2;
1895 if (is_legacy)
1896 priv->qos_data.def_qos_parm.ac[i].edca_txop =
1897 cpu_to_le16(6016);
1898 else
1899 priv->qos_data.def_qos_parm.ac[i].edca_txop =
1900 cpu_to_le16(3008);
1901 priv->qos_data.def_qos_parm.ac[i].reserved1 = 0;
1902
1903 i = 3;
1904 priv->qos_data.def_qos_parm.ac[i].cw_min =
1905 cpu_to_le16((cw_min + 1) / 4 - 1);
1906 priv->qos_data.def_qos_parm.ac[i].cw_max =
1907 cpu_to_le16((cw_max + 1) / 2 - 1);
1908 priv->qos_data.def_qos_parm.ac[i].aifsn = 2;
1909 priv->qos_data.def_qos_parm.ac[i].reserved1 = 0;
1910 if (is_legacy)
1911 priv->qos_data.def_qos_parm.ac[i].edca_txop =
1912 cpu_to_le16(3264);
1913 else
1914 priv->qos_data.def_qos_parm.ac[i].edca_txop =
1915 cpu_to_le16(1504);
1916 } else {
1917 for (i = 1; i < 4; i++) {
1918 priv->qos_data.def_qos_parm.ac[i].cw_min =
1919 cpu_to_le16(cw_min);
1920 priv->qos_data.def_qos_parm.ac[i].cw_max =
1921 cpu_to_le16(cw_max);
1922 priv->qos_data.def_qos_parm.ac[i].aifsn = aifs;
1923 priv->qos_data.def_qos_parm.ac[i].edca_txop = 0;
1924 priv->qos_data.def_qos_parm.ac[i].reserved1 = 0;
1925 }
1926 }
1927 IWL_DEBUG_QOS("set QoS to default \n");
1928
1929 spin_unlock_irqrestore(&priv->lock, flags);
1930 }
1931
1932 static void iwl4965_activate_qos(struct iwl4965_priv *priv, u8 force)
1933 {
1934 unsigned long flags;
1935
1936 if (test_bit(STATUS_EXIT_PENDING, &priv->status))
1937 return;
1938
1939 if (!priv->qos_data.qos_enable)
1940 return;
1941
1942 spin_lock_irqsave(&priv->lock, flags);
1943 priv->qos_data.def_qos_parm.qos_flags = 0;
1944
1945 if (priv->qos_data.qos_cap.q_AP.queue_request &&
1946 !priv->qos_data.qos_cap.q_AP.txop_request)
1947 priv->qos_data.def_qos_parm.qos_flags |=
1948 QOS_PARAM_FLG_TXOP_TYPE_MSK;
1949 if (priv->qos_data.qos_active)
1950 priv->qos_data.def_qos_parm.qos_flags |=
1951 QOS_PARAM_FLG_UPDATE_EDCA_MSK;
1952
1953 #ifdef CONFIG_IWL4965_HT
1954 if (priv->current_ht_config.is_ht)
1955 priv->qos_data.def_qos_parm.qos_flags |= QOS_PARAM_FLG_TGN_MSK;
1956 #endif /* CONFIG_IWL4965_HT */
1957
1958 spin_unlock_irqrestore(&priv->lock, flags);
1959
1960 if (force || iwl4965_is_associated(priv)) {
1961 IWL_DEBUG_QOS("send QoS cmd with Qos active=%d FLAGS=0x%X\n",
1962 priv->qos_data.qos_active,
1963 priv->qos_data.def_qos_parm.qos_flags);
1964
1965 iwl4965_send_qos_params_command(priv,
1966 &(priv->qos_data.def_qos_parm));
1967 }
1968 }
1969
1970 /*
1971 * Power management (not Tx power!) functions
1972 */
1973 #define MSEC_TO_USEC 1024
1974
1975 #define NOSLP __constant_cpu_to_le16(0), 0, 0
1976 #define SLP IWL_POWER_DRIVER_ALLOW_SLEEP_MSK, 0, 0
1977 #define SLP_TIMEOUT(T) __constant_cpu_to_le32((T) * MSEC_TO_USEC)
1978 #define SLP_VEC(X0, X1, X2, X3, X4) {__constant_cpu_to_le32(X0), \
1979 __constant_cpu_to_le32(X1), \
1980 __constant_cpu_to_le32(X2), \
1981 __constant_cpu_to_le32(X3), \
1982 __constant_cpu_to_le32(X4)}
1983
1984
1985 /* default power management (not Tx power) table values */
1986 /* for tim 0-10 */
1987 static struct iwl4965_power_vec_entry range_0[IWL_POWER_AC] = {
1988 {{NOSLP, SLP_TIMEOUT(0), SLP_TIMEOUT(0), SLP_VEC(0, 0, 0, 0, 0)}, 0},
1989 {{SLP, SLP_TIMEOUT(200), SLP_TIMEOUT(500), SLP_VEC(1, 2, 3, 4, 4)}, 0},
1990 {{SLP, SLP_TIMEOUT(200), SLP_TIMEOUT(300), SLP_VEC(2, 4, 6, 7, 7)}, 0},
1991 {{SLP, SLP_TIMEOUT(50), SLP_TIMEOUT(100), SLP_VEC(2, 6, 9, 9, 10)}, 0},
1992 {{SLP, SLP_TIMEOUT(50), SLP_TIMEOUT(25), SLP_VEC(2, 7, 9, 9, 10)}, 1},
1993 {{SLP, SLP_TIMEOUT(25), SLP_TIMEOUT(25), SLP_VEC(4, 7, 10, 10, 10)}, 1}
1994 };
1995
1996 /* for tim > 10 */
1997 static struct iwl4965_power_vec_entry range_1[IWL_POWER_AC] = {
1998 {{NOSLP, SLP_TIMEOUT(0), SLP_TIMEOUT(0), SLP_VEC(0, 0, 0, 0, 0)}, 0},
1999 {{SLP, SLP_TIMEOUT(200), SLP_TIMEOUT(500),
2000 SLP_VEC(1, 2, 3, 4, 0xFF)}, 0},
2001 {{SLP, SLP_TIMEOUT(200), SLP_TIMEOUT(300),
2002 SLP_VEC(2, 4, 6, 7, 0xFF)}, 0},
2003 {{SLP, SLP_TIMEOUT(50), SLP_TIMEOUT(100),
2004 SLP_VEC(2, 6, 9, 9, 0xFF)}, 0},
2005 {{SLP, SLP_TIMEOUT(50), SLP_TIMEOUT(25), SLP_VEC(2, 7, 9, 9, 0xFF)}, 0},
2006 {{SLP, SLP_TIMEOUT(25), SLP_TIMEOUT(25),
2007 SLP_VEC(4, 7, 10, 10, 0xFF)}, 0}
2008 };
2009
2010 int iwl4965_power_init_handle(struct iwl4965_priv *priv)
2011 {
2012 int rc = 0, i;
2013 struct iwl4965_power_mgr *pow_data;
2014 int size = sizeof(struct iwl4965_power_vec_entry) * IWL_POWER_AC;
2015 u16 pci_pm;
2016
2017 IWL_DEBUG_POWER("Initialize power \n");
2018
2019 pow_data = &(priv->power_data);
2020
2021 memset(pow_data, 0, sizeof(*pow_data));
2022
2023 pow_data->active_index = IWL_POWER_RANGE_0;
2024 pow_data->dtim_val = 0xffff;
2025
2026 memcpy(&pow_data->pwr_range_0[0], &range_0[0], size);
2027 memcpy(&pow_data->pwr_range_1[0], &range_1[0], size);
2028
2029 rc = pci_read_config_word(priv->pci_dev, PCI_LINK_CTRL, &pci_pm);
2030 if (rc != 0)
2031 return 0;
2032 else {
2033 struct iwl4965_powertable_cmd *cmd;
2034
2035 IWL_DEBUG_POWER("adjust power command flags\n");
2036
2037 for (i = 0; i < IWL_POWER_AC; i++) {
2038 cmd = &pow_data->pwr_range_0[i].cmd;
2039
2040 if (pci_pm & 0x1)
2041 cmd->flags &= ~IWL_POWER_PCI_PM_MSK;
2042 else
2043 cmd->flags |= IWL_POWER_PCI_PM_MSK;
2044 }
2045 }
2046 return rc;
2047 }
2048
2049 static int iwl4965_update_power_cmd(struct iwl4965_priv *priv,
2050 struct iwl4965_powertable_cmd *cmd, u32 mode)
2051 {
2052 int rc = 0, i;
2053 u8 skip;
2054 u32 max_sleep = 0;
2055 struct iwl4965_power_vec_entry *range;
2056 u8 period = 0;
2057 struct iwl4965_power_mgr *pow_data;
2058
2059 if (mode > IWL_POWER_INDEX_5) {
2060 IWL_DEBUG_POWER("Error invalid power mode \n");
2061 return -1;
2062 }
2063 pow_data = &(priv->power_data);
2064
2065 if (pow_data->active_index == IWL_POWER_RANGE_0)
2066 range = &pow_data->pwr_range_0[0];
2067 else
2068 range = &pow_data->pwr_range_1[1];
2069
2070 memcpy(cmd, &range[mode].cmd, sizeof(struct iwl4965_powertable_cmd));
2071
2072 #ifdef IWL_MAC80211_DISABLE
2073 if (priv->assoc_network != NULL) {
2074 unsigned long flags;
2075
2076 period = priv->assoc_network->tim.tim_period;
2077 }
2078 #endif /*IWL_MAC80211_DISABLE */
2079 skip = range[mode].no_dtim;
2080
2081 if (period == 0) {
2082 period = 1;
2083 skip = 0;
2084 }
2085
2086 if (skip == 0) {
2087 max_sleep = period;
2088 cmd->flags &= ~IWL_POWER_SLEEP_OVER_DTIM_MSK;
2089 } else {
2090 __le32 slp_itrvl = cmd->sleep_interval[IWL_POWER_VEC_SIZE - 1];
2091 max_sleep = (le32_to_cpu(slp_itrvl) / period) * period;
2092 cmd->flags |= IWL_POWER_SLEEP_OVER_DTIM_MSK;
2093 }
2094
2095 for (i = 0; i < IWL_POWER_VEC_SIZE; i++) {
2096 if (le32_to_cpu(cmd->sleep_interval[i]) > max_sleep)
2097 cmd->sleep_interval[i] = cpu_to_le32(max_sleep);
2098 }
2099
2100 IWL_DEBUG_POWER("Flags value = 0x%08X\n", cmd->flags);
2101 IWL_DEBUG_POWER("Tx timeout = %u\n", le32_to_cpu(cmd->tx_data_timeout));
2102 IWL_DEBUG_POWER("Rx timeout = %u\n", le32_to_cpu(cmd->rx_data_timeout));
2103 IWL_DEBUG_POWER("Sleep interval vector = { %d , %d , %d , %d , %d }\n",
2104 le32_to_cpu(cmd->sleep_interval[0]),
2105 le32_to_cpu(cmd->sleep_interval[1]),
2106 le32_to_cpu(cmd->sleep_interval[2]),
2107 le32_to_cpu(cmd->sleep_interval[3]),
2108 le32_to_cpu(cmd->sleep_interval[4]));
2109
2110 return rc;
2111 }
2112
2113 static int iwl4965_send_power_mode(struct iwl4965_priv *priv, u32 mode)
2114 {
2115 u32 uninitialized_var(final_mode);
2116 int rc;
2117 struct iwl4965_powertable_cmd cmd;
2118
2119 /* If on battery, set to 3,
2120 * if plugged into AC power, set to CAM ("continuously aware mode"),
2121 * else user level */
2122 switch (mode) {
2123 case IWL_POWER_BATTERY:
2124 final_mode = IWL_POWER_INDEX_3;
2125 break;
2126 case IWL_POWER_AC:
2127 final_mode = IWL_POWER_MODE_CAM;
2128 break;
2129 default:
2130 final_mode = mode;
2131 break;
2132 }
2133
2134 cmd.keep_alive_beacons = 0;
2135
2136 iwl4965_update_power_cmd(priv, &cmd, final_mode);
2137
2138 rc = iwl4965_send_cmd_pdu(priv, POWER_TABLE_CMD, sizeof(cmd), &cmd);
2139
2140 if (final_mode == IWL_POWER_MODE_CAM)
2141 clear_bit(STATUS_POWER_PMI, &priv->status);
2142 else
2143 set_bit(STATUS_POWER_PMI, &priv->status);
2144
2145 return rc;
2146 }
2147
2148 int iwl4965_is_network_packet(struct iwl4965_priv *priv, struct ieee80211_hdr *header)
2149 {
2150 /* Filter incoming packets to determine if they are targeted toward
2151 * this network, discarding packets coming from ourselves */
2152 switch (priv->iw_mode) {
2153 case IEEE80211_IF_TYPE_IBSS: /* Header: Dest. | Source | BSSID */
2154 /* packets from our adapter are dropped (echo) */
2155 if (!compare_ether_addr(header->addr2, priv->mac_addr))
2156 return 0;
2157 /* {broad,multi}cast packets to our IBSS go through */
2158 if (is_multicast_ether_addr(header->addr1))
2159 return !compare_ether_addr(header->addr3, priv->bssid);
2160 /* packets to our adapter go through */
2161 return !compare_ether_addr(header->addr1, priv->mac_addr);
2162 case IEEE80211_IF_TYPE_STA: /* Header: Dest. | AP{BSSID} | Source */
2163 /* packets from our adapter are dropped (echo) */
2164 if (!compare_ether_addr(header->addr3, priv->mac_addr))
2165 return 0;
2166 /* {broad,multi}cast packets to our BSS go through */
2167 if (is_multicast_ether_addr(header->addr1))
2168 return !compare_ether_addr(header->addr2, priv->bssid);
2169 /* packets to our adapter go through */
2170 return !compare_ether_addr(header->addr1, priv->mac_addr);
2171 }
2172
2173 return 1;
2174 }
2175
2176 #define TX_STATUS_ENTRY(x) case TX_STATUS_FAIL_ ## x: return #x
2177
2178 static const char *iwl4965_get_tx_fail_reason(u32 status)
2179 {
2180 switch (status & TX_STATUS_MSK) {
2181 case TX_STATUS_SUCCESS:
2182 return "SUCCESS";
2183 TX_STATUS_ENTRY(SHORT_LIMIT);
2184 TX_STATUS_ENTRY(LONG_LIMIT);
2185 TX_STATUS_ENTRY(FIFO_UNDERRUN);
2186 TX_STATUS_ENTRY(MGMNT_ABORT);
2187 TX_STATUS_ENTRY(NEXT_FRAG);
2188 TX_STATUS_ENTRY(LIFE_EXPIRE);
2189 TX_STATUS_ENTRY(DEST_PS);
2190 TX_STATUS_ENTRY(ABORTED);
2191 TX_STATUS_ENTRY(BT_RETRY);
2192 TX_STATUS_ENTRY(STA_INVALID);
2193 TX_STATUS_ENTRY(FRAG_DROPPED);
2194 TX_STATUS_ENTRY(TID_DISABLE);
2195 TX_STATUS_ENTRY(FRAME_FLUSHED);
2196 TX_STATUS_ENTRY(INSUFFICIENT_CF_POLL);
2197 TX_STATUS_ENTRY(TX_LOCKED);
2198 TX_STATUS_ENTRY(NO_BEACON_ON_RADAR);
2199 }
2200
2201 return "UNKNOWN";
2202 }
2203
2204 /**
2205 * iwl4965_scan_cancel - Cancel any currently executing HW scan
2206 *
2207 * NOTE: priv->mutex is not required before calling this function
2208 */
2209 static int iwl4965_scan_cancel(struct iwl4965_priv *priv)
2210 {
2211 if (!test_bit(STATUS_SCAN_HW, &priv->status)) {
2212 clear_bit(STATUS_SCANNING, &priv->status);
2213 return 0;
2214 }
2215
2216 if (test_bit(STATUS_SCANNING, &priv->status)) {
2217 if (!test_bit(STATUS_SCAN_ABORTING, &priv->status)) {
2218 IWL_DEBUG_SCAN("Queuing scan abort.\n");
2219 set_bit(STATUS_SCAN_ABORTING, &priv->status);
2220 queue_work(priv->workqueue, &priv->abort_scan);
2221
2222 } else
2223 IWL_DEBUG_SCAN("Scan abort already in progress.\n");
2224
2225 return test_bit(STATUS_SCANNING, &priv->status);
2226 }
2227
2228 return 0;
2229 }
2230
2231 /**
2232 * iwl4965_scan_cancel_timeout - Cancel any currently executing HW scan
2233 * @ms: amount of time to wait (in milliseconds) for scan to abort
2234 *
2235 * NOTE: priv->mutex must be held before calling this function
2236 */
2237 static int iwl4965_scan_cancel_timeout(struct iwl4965_priv *priv, unsigned long ms)
2238 {
2239 unsigned long now = jiffies;
2240 int ret;
2241
2242 ret = iwl4965_scan_cancel(priv);
2243 if (ret && ms) {
2244 mutex_unlock(&priv->mutex);
2245 while (!time_after(jiffies, now + msecs_to_jiffies(ms)) &&
2246 test_bit(STATUS_SCANNING, &priv->status))
2247 msleep(1);
2248 mutex_lock(&priv->mutex);
2249
2250 return test_bit(STATUS_SCANNING, &priv->status);
2251 }
2252
2253 return ret;
2254 }
2255
2256 static void iwl4965_sequence_reset(struct iwl4965_priv *priv)
2257 {
2258 /* Reset ieee stats */
2259
2260 /* We don't reset the net_device_stats (ieee->stats) on
2261 * re-association */
2262
2263 priv->last_seq_num = -1;
2264 priv->last_frag_num = -1;
2265 priv->last_packet_time = 0;
2266
2267 iwl4965_scan_cancel(priv);
2268 }
2269
2270 #define MAX_UCODE_BEACON_INTERVAL 4096
2271 #define INTEL_CONN_LISTEN_INTERVAL __constant_cpu_to_le16(0xA)
2272
2273 static __le16 iwl4965_adjust_beacon_interval(u16 beacon_val)
2274 {
2275 u16 new_val = 0;
2276 u16 beacon_factor = 0;
2277
2278 beacon_factor =
2279 (beacon_val + MAX_UCODE_BEACON_INTERVAL)
2280 / MAX_UCODE_BEACON_INTERVAL;
2281 new_val = beacon_val / beacon_factor;
2282
2283 return cpu_to_le16(new_val);
2284 }
2285
2286 static void iwl4965_setup_rxon_timing(struct iwl4965_priv *priv)
2287 {
2288 u64 interval_tm_unit;
2289 u64 tsf, result;
2290 unsigned long flags;
2291 struct ieee80211_conf *conf = NULL;
2292 u16 beacon_int = 0;
2293
2294 conf = ieee80211_get_hw_conf(priv->hw);
2295
2296 spin_lock_irqsave(&priv->lock, flags);
2297 priv->rxon_timing.timestamp.dw[1] = cpu_to_le32(priv->timestamp1);
2298 priv->rxon_timing.timestamp.dw[0] = cpu_to_le32(priv->timestamp0);
2299
2300 priv->rxon_timing.listen_interval = INTEL_CONN_LISTEN_INTERVAL;
2301
2302 tsf = priv->timestamp1;
2303 tsf = ((tsf << 32) | priv->timestamp0);
2304
2305 beacon_int = priv->beacon_int;
2306 spin_unlock_irqrestore(&priv->lock, flags);
2307
2308 if (priv->iw_mode == IEEE80211_IF_TYPE_STA) {
2309 if (beacon_int == 0) {
2310 priv->rxon_timing.beacon_interval = cpu_to_le16(100);
2311 priv->rxon_timing.beacon_init_val = cpu_to_le32(102400);
2312 } else {
2313 priv->rxon_timing.beacon_interval =
2314 cpu_to_le16(beacon_int);
2315 priv->rxon_timing.beacon_interval =
2316 iwl4965_adjust_beacon_interval(
2317 le16_to_cpu(priv->rxon_timing.beacon_interval));
2318 }
2319
2320 priv->rxon_timing.atim_window = 0;
2321 } else {
2322 priv->rxon_timing.beacon_interval =
2323 iwl4965_adjust_beacon_interval(conf->beacon_int);
2324 /* TODO: we need to get atim_window from upper stack
2325 * for now we set to 0 */
2326 priv->rxon_timing.atim_window = 0;
2327 }
2328
2329 interval_tm_unit =
2330 (le16_to_cpu(priv->rxon_timing.beacon_interval) * 1024);
2331 result = do_div(tsf, interval_tm_unit);
2332 priv->rxon_timing.beacon_init_val =
2333 cpu_to_le32((u32) ((u64) interval_tm_unit - result));
2334
2335 IWL_DEBUG_ASSOC
2336 ("beacon interval %d beacon timer %d beacon tim %d\n",
2337 le16_to_cpu(priv->rxon_timing.beacon_interval),
2338 le32_to_cpu(priv->rxon_timing.beacon_init_val),
2339 le16_to_cpu(priv->rxon_timing.atim_window));
2340 }
2341
2342 static int iwl4965_scan_initiate(struct iwl4965_priv *priv)
2343 {
2344 if (priv->iw_mode == IEEE80211_IF_TYPE_AP) {
2345 IWL_ERROR("APs don't scan.\n");
2346 return 0;
2347 }
2348
2349 if (!iwl4965_is_ready_rf(priv)) {
2350 IWL_DEBUG_SCAN("Aborting scan due to not ready.\n");
2351 return -EIO;
2352 }
2353
2354 if (test_bit(STATUS_SCANNING, &priv->status)) {
2355 IWL_DEBUG_SCAN("Scan already in progress.\n");
2356 return -EAGAIN;
2357 }
2358
2359 if (test_bit(STATUS_SCAN_ABORTING, &priv->status)) {
2360 IWL_DEBUG_SCAN("Scan request while abort pending. "
2361 "Queuing.\n");
2362 return -EAGAIN;
2363 }
2364
2365 IWL_DEBUG_INFO("Starting scan...\n");
2366 priv->scan_bands = 2;
2367 set_bit(STATUS_SCANNING, &priv->status);
2368 priv->scan_start = jiffies;
2369 priv->scan_pass_start = priv->scan_start;
2370
2371 queue_work(priv->workqueue, &priv->request_scan);
2372
2373 return 0;
2374 }
2375
2376 static int iwl4965_set_rxon_hwcrypto(struct iwl4965_priv *priv, int hw_decrypt)
2377 {
2378 struct iwl4965_rxon_cmd *rxon = &priv->staging_rxon;
2379
2380 if (hw_decrypt)
2381 rxon->filter_flags &= ~RXON_FILTER_DIS_DECRYPT_MSK;
2382 else
2383 rxon->filter_flags |= RXON_FILTER_DIS_DECRYPT_MSK;
2384
2385 return 0;
2386 }
2387
2388 static void iwl4965_set_flags_for_phymode(struct iwl4965_priv *priv,
2389 enum ieee80211_band band)
2390 {
2391 if (band == IEEE80211_BAND_5GHZ) {
2392 priv->staging_rxon.flags &=
2393 ~(RXON_FLG_BAND_24G_MSK | RXON_FLG_AUTO_DETECT_MSK
2394 | RXON_FLG_CCK_MSK);
2395 priv->staging_rxon.flags |= RXON_FLG_SHORT_SLOT_MSK;
2396 } else {
2397 /* Copied from iwl4965_bg_post_associate() */
2398 if (priv->assoc_capability & WLAN_CAPABILITY_SHORT_SLOT_TIME)
2399 priv->staging_rxon.flags |= RXON_FLG_SHORT_SLOT_MSK;
2400 else
2401 priv->staging_rxon.flags &= ~RXON_FLG_SHORT_SLOT_MSK;
2402
2403 if (priv->iw_mode == IEEE80211_IF_TYPE_IBSS)
2404 priv->staging_rxon.flags &= ~RXON_FLG_SHORT_SLOT_MSK;
2405
2406 priv->staging_rxon.flags |= RXON_FLG_BAND_24G_MSK;
2407 priv->staging_rxon.flags |= RXON_FLG_AUTO_DETECT_MSK;
2408 priv->staging_rxon.flags &= ~RXON_FLG_CCK_MSK;
2409 }
2410 }
2411
2412 /*
2413 * initialize rxon structure with default values from eeprom
2414 */
2415 static void iwl4965_connection_init_rx_config(struct iwl4965_priv *priv)
2416 {
2417 const struct iwl4965_channel_info *ch_info;
2418
2419 memset(&priv->staging_rxon, 0, sizeof(priv->staging_rxon));
2420
2421 switch (priv->iw_mode) {
2422 case IEEE80211_IF_TYPE_AP:
2423 priv->staging_rxon.dev_type = RXON_DEV_TYPE_AP;
2424 break;
2425
2426 case IEEE80211_IF_TYPE_STA:
2427 priv->staging_rxon.dev_type = RXON_DEV_TYPE_ESS;
2428 priv->staging_rxon.filter_flags = RXON_FILTER_ACCEPT_GRP_MSK;
2429 break;
2430
2431 case IEEE80211_IF_TYPE_IBSS:
2432 priv->staging_rxon.dev_type = RXON_DEV_TYPE_IBSS;
2433 priv->staging_rxon.flags = RXON_FLG_SHORT_PREAMBLE_MSK;
2434 priv->staging_rxon.filter_flags = RXON_FILTER_BCON_AWARE_MSK |
2435 RXON_FILTER_ACCEPT_GRP_MSK;
2436 break;
2437
2438 case IEEE80211_IF_TYPE_MNTR:
2439 priv->staging_rxon.dev_type = RXON_DEV_TYPE_SNIFFER;
2440 priv->staging_rxon.filter_flags = RXON_FILTER_PROMISC_MSK |
2441 RXON_FILTER_CTL2HOST_MSK | RXON_FILTER_ACCEPT_GRP_MSK;
2442 break;
2443 }
2444
2445 #if 0
2446 /* TODO: Figure out when short_preamble would be set and cache from
2447 * that */
2448 if (!hw_to_local(priv->hw)->short_preamble)
2449 priv->staging_rxon.flags &= ~RXON_FLG_SHORT_PREAMBLE_MSK;
2450 else
2451 priv->staging_rxon.flags |= RXON_FLG_SHORT_PREAMBLE_MSK;
2452 #endif
2453
2454 ch_info = iwl4965_get_channel_info(priv, priv->band,
2455 le16_to_cpu(priv->staging_rxon.channel));
2456
2457 if (!ch_info)
2458 ch_info = &priv->channel_info[0];
2459
2460 /*
2461 * in some case A channels are all non IBSS
2462 * in this case force B/G channel
2463 */
2464 if ((priv->iw_mode == IEEE80211_IF_TYPE_IBSS) &&
2465 !(is_channel_ibss(ch_info)))
2466 ch_info = &priv->channel_info[0];
2467
2468 priv->staging_rxon.channel = cpu_to_le16(ch_info->channel);
2469 priv->band = ch_info->band;
2470
2471 iwl4965_set_flags_for_phymode(priv, priv->band);
2472
2473 priv->staging_rxon.ofdm_basic_rates =
2474 (IWL_OFDM_RATES_MASK >> IWL_FIRST_OFDM_RATE) & 0xFF;
2475 priv->staging_rxon.cck_basic_rates =
2476 (IWL_CCK_RATES_MASK >> IWL_FIRST_CCK_RATE) & 0xF;
2477
2478 priv->staging_rxon.flags &= ~(RXON_FLG_CHANNEL_MODE_MIXED_MSK |
2479 RXON_FLG_CHANNEL_MODE_PURE_40_MSK);
2480 memcpy(priv->staging_rxon.node_addr, priv->mac_addr, ETH_ALEN);
2481 memcpy(priv->staging_rxon.wlap_bssid_addr, priv->mac_addr, ETH_ALEN);
2482 priv->staging_rxon.ofdm_ht_single_stream_basic_rates = 0xff;
2483 priv->staging_rxon.ofdm_ht_dual_stream_basic_rates = 0xff;
2484 iwl4965_set_rxon_chain(priv);
2485 }
2486
2487 static int iwl4965_set_mode(struct iwl4965_priv *priv, int mode)
2488 {
2489 if (mode == IEEE80211_IF_TYPE_IBSS) {
2490 const struct iwl4965_channel_info *ch_info;
2491
2492 ch_info = iwl4965_get_channel_info(priv,
2493 priv->band,
2494 le16_to_cpu(priv->staging_rxon.channel));
2495
2496 if (!ch_info || !is_channel_ibss(ch_info)) {
2497 IWL_ERROR("channel %d not IBSS channel\n",
2498 le16_to_cpu(priv->staging_rxon.channel));
2499 return -EINVAL;
2500 }
2501 }
2502
2503 priv->iw_mode = mode;
2504
2505 iwl4965_connection_init_rx_config(priv);
2506 memcpy(priv->staging_rxon.node_addr, priv->mac_addr, ETH_ALEN);
2507
2508 iwl4965_clear_stations_table(priv);
2509
2510 /* dont commit rxon if rf-kill is on*/
2511 if (!iwl4965_is_ready_rf(priv))
2512 return -EAGAIN;
2513
2514 cancel_delayed_work(&priv->scan_check);
2515 if (iwl4965_scan_cancel_timeout(priv, 100)) {
2516 IWL_WARNING("Aborted scan still in progress after 100ms\n");
2517 IWL_DEBUG_MAC80211("leaving - scan abort failed.\n");
2518 return -EAGAIN;
2519 }
2520
2521 iwl4965_commit_rxon(priv);
2522
2523 return 0;
2524 }
2525
2526 static void iwl4965_build_tx_cmd_hwcrypto(struct iwl4965_priv *priv,
2527 struct ieee80211_tx_control *ctl,
2528 struct iwl4965_cmd *cmd,
2529 struct sk_buff *skb_frag,
2530 int last_frag)
2531 {
2532 struct iwl4965_hw_key *keyinfo = &priv->stations[ctl->key_idx].keyinfo;
2533
2534 switch (keyinfo->alg) {
2535 case ALG_CCMP:
2536 cmd->cmd.tx.sec_ctl = TX_CMD_SEC_CCM;
2537 memcpy(cmd->cmd.tx.key, keyinfo->key, keyinfo->keylen);
2538 IWL_DEBUG_TX("tx_cmd with aes hwcrypto\n");
2539 break;
2540
2541 case ALG_TKIP:
2542 #if 0
2543 cmd->cmd.tx.sec_ctl = TX_CMD_SEC_TKIP;
2544
2545 if (last_frag)
2546 memcpy(cmd->cmd.tx.tkip_mic.byte, skb_frag->tail - 8,
2547 8);
2548 else
2549 memset(cmd->cmd.tx.tkip_mic.byte, 0, 8);
2550 #endif
2551 break;
2552
2553 case ALG_WEP:
2554 cmd->cmd.tx.sec_ctl = TX_CMD_SEC_WEP |
2555 (ctl->key_idx & TX_CMD_SEC_MSK) << TX_CMD_SEC_SHIFT;
2556
2557 if (keyinfo->keylen == 13)
2558 cmd->cmd.tx.sec_ctl |= TX_CMD_SEC_KEY128;
2559
2560 memcpy(&cmd->cmd.tx.key[3], keyinfo->key, keyinfo->keylen);
2561
2562 IWL_DEBUG_TX("Configuring packet for WEP encryption "
2563 "with key %d\n", ctl->key_idx);
2564 break;
2565
2566 default:
2567 printk(KERN_ERR "Unknown encode alg %d\n", keyinfo->alg);
2568 break;
2569 }
2570 }
2571
2572 /*
2573 * handle build REPLY_TX command notification.
2574 */
2575 static void iwl4965_build_tx_cmd_basic(struct iwl4965_priv *priv,
2576 struct iwl4965_cmd *cmd,
2577 struct ieee80211_tx_control *ctrl,
2578 struct ieee80211_hdr *hdr,
2579 int is_unicast, u8 std_id)
2580 {
2581 __le16 *qc;
2582 u16 fc = le16_to_cpu(hdr->frame_control);
2583 __le32 tx_flags = cmd->cmd.tx.tx_flags;
2584
2585 cmd->cmd.tx.stop_time.life_time = TX_CMD_LIFE_TIME_INFINITE;
2586 if (!(ctrl->flags & IEEE80211_TXCTL_NO_ACK)) {
2587 tx_flags |= TX_CMD_FLG_ACK_MSK;
2588 if ((fc & IEEE80211_FCTL_FTYPE) == IEEE80211_FTYPE_MGMT)
2589 tx_flags |= TX_CMD_FLG_SEQ_CTL_MSK;
2590 if (ieee80211_is_probe_response(fc) &&
2591 !(le16_to_cpu(hdr->seq_ctrl) & 0xf))
2592 tx_flags |= TX_CMD_FLG_TSF_MSK;
2593 } else {
2594 tx_flags &= (~TX_CMD_FLG_ACK_MSK);
2595 tx_flags |= TX_CMD_FLG_SEQ_CTL_MSK;
2596 }
2597
2598 if (ieee80211_is_back_request(fc))
2599 tx_flags |= TX_CMD_FLG_ACK_MSK | TX_CMD_FLG_IMM_BA_RSP_MASK;
2600
2601
2602 cmd->cmd.tx.sta_id = std_id;
2603 if (ieee80211_get_morefrag(hdr))
2604 tx_flags |= TX_CMD_FLG_MORE_FRAG_MSK;
2605
2606 qc = ieee80211_get_qos_ctrl(hdr);
2607 if (qc) {
2608 cmd->cmd.tx.tid_tspec = (u8) (le16_to_cpu(*qc) & 0xf);
2609 tx_flags &= ~TX_CMD_FLG_SEQ_CTL_MSK;
2610 } else
2611 tx_flags |= TX_CMD_FLG_SEQ_CTL_MSK;
2612
2613 if (ctrl->flags & IEEE80211_TXCTL_USE_RTS_CTS) {
2614 tx_flags |= TX_CMD_FLG_RTS_MSK;
2615 tx_flags &= ~TX_CMD_FLG_CTS_MSK;
2616 } else if (ctrl->flags & IEEE80211_TXCTL_USE_CTS_PROTECT) {
2617 tx_flags &= ~TX_CMD_FLG_RTS_MSK;
2618 tx_flags |= TX_CMD_FLG_CTS_MSK;
2619 }
2620
2621 if ((tx_flags & TX_CMD_FLG_RTS_MSK) || (tx_flags & TX_CMD_FLG_CTS_MSK))
2622 tx_flags |= TX_CMD_FLG_FULL_TXOP_PROT_MSK;
2623
2624 tx_flags &= ~(TX_CMD_FLG_ANT_SEL_MSK);
2625 if ((fc & IEEE80211_FCTL_FTYPE) == IEEE80211_FTYPE_MGMT) {
2626 if ((fc & IEEE80211_FCTL_STYPE) == IEEE80211_STYPE_ASSOC_REQ ||
2627 (fc & IEEE80211_FCTL_STYPE) == IEEE80211_STYPE_REASSOC_REQ)
2628 cmd->cmd.tx.timeout.pm_frame_timeout = cpu_to_le16(3);
2629 else
2630 cmd->cmd.tx.timeout.pm_frame_timeout = cpu_to_le16(2);
2631 } else
2632 cmd->cmd.tx.timeout.pm_frame_timeout = 0;
2633
2634 cmd->cmd.tx.driver_txop = 0;
2635 cmd->cmd.tx.tx_flags = tx_flags;
2636 cmd->cmd.tx.next_frame_len = 0;
2637 }
2638
2639 /**
2640 * iwl4965_get_sta_id - Find station's index within station table
2641 *
2642 * If new IBSS station, create new entry in station table
2643 */
2644 static int iwl4965_get_sta_id(struct iwl4965_priv *priv,
2645 struct ieee80211_hdr *hdr)
2646 {
2647 int sta_id;
2648 u16 fc = le16_to_cpu(hdr->frame_control);
2649 DECLARE_MAC_BUF(mac);
2650
2651 /* If this frame is broadcast or management, use broadcast station id */
2652 if (((fc & IEEE80211_FCTL_FTYPE) != IEEE80211_FTYPE_DATA) ||
2653 is_multicast_ether_addr(hdr->addr1))
2654 return priv->hw_setting.bcast_sta_id;
2655
2656 switch (priv->iw_mode) {
2657
2658 /* If we are a client station in a BSS network, use the special
2659 * AP station entry (that's the only station we communicate with) */
2660 case IEEE80211_IF_TYPE_STA:
2661 return IWL_AP_ID;
2662
2663 /* If we are an AP, then find the station, or use BCAST */
2664 case IEEE80211_IF_TYPE_AP:
2665 sta_id = iwl4965_hw_find_station(priv, hdr->addr1);
2666 if (sta_id != IWL_INVALID_STATION)
2667 return sta_id;
2668 return priv->hw_setting.bcast_sta_id;
2669
2670 /* If this frame is going out to an IBSS network, find the station,
2671 * or create a new station table entry */
2672 case IEEE80211_IF_TYPE_IBSS:
2673 sta_id = iwl4965_hw_find_station(priv, hdr->addr1);
2674 if (sta_id != IWL_INVALID_STATION)
2675 return sta_id;
2676
2677 /* Create new station table entry */
2678 sta_id = iwl4965_add_station_flags(priv, hdr->addr1,
2679 0, CMD_ASYNC, NULL);
2680
2681 if (sta_id != IWL_INVALID_STATION)
2682 return sta_id;
2683
2684 IWL_DEBUG_DROP("Station %s not in station map. "
2685 "Defaulting to broadcast...\n",
2686 print_mac(mac, hdr->addr1));
2687 iwl4965_print_hex_dump(IWL_DL_DROP, (u8 *) hdr, sizeof(*hdr));
2688 return priv->hw_setting.bcast_sta_id;
2689
2690 default:
2691 IWL_WARNING("Unknown mode of operation: %d", priv->iw_mode);
2692 return priv->hw_setting.bcast_sta_id;
2693 }
2694 }
2695
2696 /*
2697 * start REPLY_TX command process
2698 */
2699 static int iwl4965_tx_skb(struct iwl4965_priv *priv,
2700 struct sk_buff *skb, struct ieee80211_tx_control *ctl)
2701 {
2702 struct ieee80211_hdr *hdr = (struct ieee80211_hdr *)skb->data;
2703 struct iwl4965_tfd_frame *tfd;
2704 u32 *control_flags;
2705 int txq_id = ctl->queue;
2706 struct iwl4965_tx_queue *txq = NULL;
2707 struct iwl4965_queue *q = NULL;
2708 dma_addr_t phys_addr;
2709 dma_addr_t txcmd_phys;
2710 dma_addr_t scratch_phys;
2711 struct iwl4965_cmd *out_cmd = NULL;
2712 u16 len, idx, len_org;
2713 u8 id, hdr_len, unicast;
2714 u8 sta_id;
2715 u16 seq_number = 0;
2716 u16 fc;
2717 __le16 *qc;
2718 u8 wait_write_ptr = 0;
2719 unsigned long flags;
2720 int rc;
2721
2722 spin_lock_irqsave(&priv->lock, flags);
2723 if (iwl4965_is_rfkill(priv)) {
2724 IWL_DEBUG_DROP("Dropping - RF KILL\n");
2725 goto drop_unlock;
2726 }
2727
2728 if (!priv->vif) {
2729 IWL_DEBUG_DROP("Dropping - !priv->vif\n");
2730 goto drop_unlock;
2731 }
2732
2733 if ((ctl->tx_rate->hw_value & 0xFF) == IWL_INVALID_RATE) {
2734 IWL_ERROR("ERROR: No TX rate available.\n");
2735 goto drop_unlock;
2736 }
2737
2738 unicast = !is_multicast_ether_addr(hdr->addr1);
2739 id = 0;
2740
2741 fc = le16_to_cpu(hdr->frame_control);
2742
2743 #ifdef CONFIG_IWL4965_DEBUG
2744 if (ieee80211_is_auth(fc))
2745 IWL_DEBUG_TX("Sending AUTH frame\n");
2746 else if (ieee80211_is_assoc_request(fc))
2747 IWL_DEBUG_TX("Sending ASSOC frame\n");
2748 else if (ieee80211_is_reassoc_request(fc))
2749 IWL_DEBUG_TX("Sending REASSOC frame\n");
2750 #endif
2751
2752 /* drop all data frame if we are not associated */
2753 if (((fc & IEEE80211_FCTL_FTYPE) == IEEE80211_FTYPE_DATA) &&
2754 (!iwl4965_is_associated(priv) ||
2755 ((priv->iw_mode == IEEE80211_IF_TYPE_STA) && !priv->assoc_id) ||
2756 !priv->assoc_station_added)) {
2757 IWL_DEBUG_DROP("Dropping - !iwl4965_is_associated\n");
2758 goto drop_unlock;
2759 }
2760
2761 spin_unlock_irqrestore(&priv->lock, flags);
2762
2763 hdr_len = ieee80211_get_hdrlen(fc);
2764
2765 /* Find (or create) index into station table for destination station */
2766 sta_id = iwl4965_get_sta_id(priv, hdr);
2767 if (sta_id == IWL_INVALID_STATION) {
2768 DECLARE_MAC_BUF(mac);
2769
2770 IWL_DEBUG_DROP("Dropping - INVALID STATION: %s\n",
2771 print_mac(mac, hdr->addr1));
2772 goto drop;
2773 }
2774
2775 IWL_DEBUG_RATE("station Id %d\n", sta_id);
2776
2777 qc = ieee80211_get_qos_ctrl(hdr);
2778 if (qc) {
2779 u8 tid = (u8)(le16_to_cpu(*qc) & 0xf);
2780 seq_number = priv->stations[sta_id].tid[tid].seq_number &
2781 IEEE80211_SCTL_SEQ;
2782 hdr->seq_ctrl = cpu_to_le16(seq_number) |
2783 (hdr->seq_ctrl &
2784 __constant_cpu_to_le16(IEEE80211_SCTL_FRAG));
2785 seq_number += 0x10;
2786 #ifdef CONFIG_IWL4965_HT
2787 /* aggregation is on for this <sta,tid> */
2788 if (ctl->flags & IEEE80211_TXCTL_AMPDU)
2789 txq_id = priv->stations[sta_id].tid[tid].agg.txq_id;
2790 priv->stations[sta_id].tid[tid].tfds_in_queue++;
2791 #endif /* CONFIG_IWL4965_HT */
2792 }
2793
2794 /* Descriptor for chosen Tx queue */
2795 txq = &priv->txq[txq_id];
2796 q = &txq->q;
2797
2798 spin_lock_irqsave(&priv->lock, flags);
2799
2800 /* Set up first empty TFD within this queue's circular TFD buffer */
2801 tfd = &txq->bd[q->write_ptr];
2802 memset(tfd, 0, sizeof(*tfd));
2803 control_flags = (u32 *) tfd;
2804 idx = get_cmd_index(q, q->write_ptr, 0);
2805
2806 /* Set up driver data for this TFD */
2807 memset(&(txq->txb[q->write_ptr]), 0, sizeof(struct iwl4965_tx_info));
2808 txq->txb[q->write_ptr].skb[0] = skb;
2809 memcpy(&(txq->txb[q->write_ptr].status.control),
2810 ctl, sizeof(struct ieee80211_tx_control));
2811
2812 /* Set up first empty entry in queue's array of Tx/cmd buffers */
2813 out_cmd = &txq->cmd[idx];
2814 memset(&out_cmd->hdr, 0, sizeof(out_cmd->hdr));
2815 memset(&out_cmd->cmd.tx, 0, sizeof(out_cmd->cmd.tx));
2816
2817 /*
2818 * Set up the Tx-command (not MAC!) header.
2819 * Store the chosen Tx queue and TFD index within the sequence field;
2820 * after Tx, uCode's Tx response will return this value so driver can
2821 * locate the frame within the tx queue and do post-tx processing.
2822 */
2823 out_cmd->hdr.cmd = REPLY_TX;
2824 out_cmd->hdr.sequence = cpu_to_le16((u16)(QUEUE_TO_SEQ(txq_id) |
2825 INDEX_TO_SEQ(q->write_ptr)));
2826
2827 /* Copy MAC header from skb into command buffer */
2828 memcpy(out_cmd->cmd.tx.hdr, hdr, hdr_len);
2829
2830 /*
2831 * Use the first empty entry in this queue's command buffer array
2832 * to contain the Tx command and MAC header concatenated together
2833 * (payload data will be in another buffer).
2834 * Size of this varies, due to varying MAC header length.
2835 * If end is not dword aligned, we'll have 2 extra bytes at the end
2836 * of the MAC header (device reads on dword boundaries).
2837 * We'll tell device about this padding later.
2838 */
2839 len = priv->hw_setting.tx_cmd_len +
2840 sizeof(struct iwl4965_cmd_header) + hdr_len;
2841
2842 len_org = len;
2843 len = (len + 3) & ~3;
2844
2845 if (len_org != len)
2846 len_org = 1;
2847 else
2848 len_org = 0;
2849
2850 /* Physical address of this Tx command's header (not MAC header!),
2851 * within command buffer array. */
2852 txcmd_phys = txq->dma_addr_cmd + sizeof(struct iwl4965_cmd) * idx +
2853 offsetof(struct iwl4965_cmd, hdr);
2854
2855 /* Add buffer containing Tx command and MAC(!) header to TFD's
2856 * first entry */
2857 iwl4965_hw_txq_attach_buf_to_tfd(priv, tfd, txcmd_phys, len);
2858
2859 if (!(ctl->flags & IEEE80211_TXCTL_DO_NOT_ENCRYPT))
2860 iwl4965_build_tx_cmd_hwcrypto(priv, ctl, out_cmd, skb, 0);
2861
2862 /* Set up TFD's 2nd entry to point directly to remainder of skb,
2863 * if any (802.11 null frames have no payload). */
2864 len = skb->len - hdr_len;
2865 if (len) {
2866 phys_addr = pci_map_single(priv->pci_dev, skb->data + hdr_len,
2867 len, PCI_DMA_TODEVICE);
2868 iwl4965_hw_txq_attach_buf_to_tfd(priv, tfd, phys_addr, len);
2869 }
2870
2871 /* Tell 4965 about any 2-byte padding after MAC header */
2872 if (len_org)
2873 out_cmd->cmd.tx.tx_flags |= TX_CMD_FLG_MH_PAD_MSK;
2874
2875 /* Total # bytes to be transmitted */
2876 len = (u16)skb->len;
2877 out_cmd->cmd.tx.len = cpu_to_le16(len);
2878
2879 /* TODO need this for burst mode later on */
2880 iwl4965_build_tx_cmd_basic(priv, out_cmd, ctl, hdr, unicast, sta_id);
2881
2882 /* set is_hcca to 0; it probably will never be implemented */
2883 iwl4965_hw_build_tx_cmd_rate(priv, out_cmd, ctl, hdr, sta_id, 0);
2884
2885 scratch_phys = txcmd_phys + sizeof(struct iwl4965_cmd_header) +
2886 offsetof(struct iwl4965_tx_cmd, scratch);
2887 out_cmd->cmd.tx.dram_lsb_ptr = cpu_to_le32(scratch_phys);
2888 out_cmd->cmd.tx.dram_msb_ptr = iwl_get_dma_hi_address(scratch_phys);
2889
2890 if (!ieee80211_get_morefrag(hdr)) {
2891 txq->need_update = 1;
2892 if (qc) {
2893 u8 tid = (u8)(le16_to_cpu(*qc) & 0xf);
2894 priv->stations[sta_id].tid[tid].seq_number = seq_number;
2895 }
2896 } else {
2897 wait_write_ptr = 1;
2898 txq->need_update = 0;
2899 }
2900
2901 iwl4965_print_hex_dump(IWL_DL_TX, out_cmd->cmd.payload,
2902 sizeof(out_cmd->cmd.tx));
2903
2904 iwl4965_print_hex_dump(IWL_DL_TX, (u8 *)out_cmd->cmd.tx.hdr,
2905 ieee80211_get_hdrlen(fc));
2906
2907 /* Set up entry for this TFD in Tx byte-count array */
2908 iwl4965_tx_queue_update_wr_ptr(priv, txq, len);
2909
2910 /* Tell device the write index *just past* this latest filled TFD */
2911 q->write_ptr = iwl4965_queue_inc_wrap(q->write_ptr, q->n_bd);
2912 rc = iwl4965_tx_queue_update_write_ptr(priv, txq);
2913 spin_unlock_irqrestore(&priv->lock, flags);
2914
2915 if (rc)
2916 return rc;
2917
2918 if ((iwl4965_queue_space(q) < q->high_mark)
2919 && priv->mac80211_registered) {
2920 if (wait_write_ptr) {
2921 spin_lock_irqsave(&priv->lock, flags);
2922 txq->need_update = 1;
2923 iwl4965_tx_queue_update_write_ptr(priv, txq);
2924 spin_unlock_irqrestore(&priv->lock, flags);
2925 }
2926
2927 ieee80211_stop_queue(priv->hw, ctl->queue);
2928 }
2929
2930 return 0;
2931
2932 drop_unlock:
2933 spin_unlock_irqrestore(&priv->lock, flags);
2934 drop:
2935 return -1;
2936 }
2937
2938 static void iwl4965_set_rate(struct iwl4965_priv *priv)
2939 {
2940 const struct ieee80211_supported_band *hw = NULL;
2941 struct ieee80211_rate *rate;
2942 int i;
2943
2944 hw = iwl4965_get_hw_mode(priv, priv->band);
2945 if (!hw) {
2946 IWL_ERROR("Failed to set rate: unable to get hw mode\n");
2947 return;
2948 }
2949
2950 priv->active_rate = 0;
2951 priv->active_rate_basic = 0;
2952
2953 for (i = 0; i < hw->n_bitrates; i++) {
2954 rate = &(hw->bitrates[i]);
2955 if (rate->hw_value < IWL_RATE_COUNT)
2956 priv->active_rate |= (1 << rate->hw_value);
2957 }
2958
2959 IWL_DEBUG_RATE("Set active_rate = %0x, active_rate_basic = %0x\n",
2960 priv->active_rate, priv->active_rate_basic);
2961
2962 /*
2963 * If a basic rate is configured, then use it (adding IWL_RATE_1M_MASK)
2964 * otherwise set it to the default of all CCK rates and 6, 12, 24 for
2965 * OFDM
2966 */
2967 if (priv->active_rate_basic & IWL_CCK_BASIC_RATES_MASK)
2968 priv->staging_rxon.cck_basic_rates =
2969 ((priv->active_rate_basic &
2970 IWL_CCK_RATES_MASK) >> IWL_FIRST_CCK_RATE) & 0xF;
2971 else
2972 priv->staging_rxon.cck_basic_rates =
2973 (IWL_CCK_BASIC_RATES_MASK >> IWL_FIRST_CCK_RATE) & 0xF;
2974
2975 if (priv->active_rate_basic & IWL_OFDM_BASIC_RATES_MASK)
2976 priv->staging_rxon.ofdm_basic_rates =
2977 ((priv->active_rate_basic &
2978 (IWL_OFDM_BASIC_RATES_MASK | IWL_RATE_6M_MASK)) >>
2979 IWL_FIRST_OFDM_RATE) & 0xFF;
2980 else
2981 priv->staging_rxon.ofdm_basic_rates =
2982 (IWL_OFDM_BASIC_RATES_MASK >> IWL_FIRST_OFDM_RATE) & 0xFF;
2983 }
2984
2985 static void iwl4965_radio_kill_sw(struct iwl4965_priv *priv, int disable_radio)
2986 {
2987 unsigned long flags;
2988
2989 if (!!disable_radio == test_bit(STATUS_RF_KILL_SW, &priv->status))
2990 return;
2991
2992 IWL_DEBUG_RF_KILL("Manual SW RF KILL set to: RADIO %s\n",
2993 disable_radio ? "OFF" : "ON");
2994
2995 if (disable_radio) {
2996 iwl4965_scan_cancel(priv);
2997 /* FIXME: This is a workaround for AP */
2998 if (priv->iw_mode != IEEE80211_IF_TYPE_AP) {
2999 spin_lock_irqsave(&priv->lock, flags);
3000 iwl4965_write32(priv, CSR_UCODE_DRV_GP1_SET,
3001 CSR_UCODE_SW_BIT_RFKILL);
3002 spin_unlock_irqrestore(&priv->lock, flags);
3003 iwl4965_send_card_state(priv, CARD_STATE_CMD_DISABLE, 0);
3004 set_bit(STATUS_RF_KILL_SW, &priv->status);
3005 }
3006 return;
3007 }
3008
3009 spin_lock_irqsave(&priv->lock, flags);
3010 iwl4965_write32(priv, CSR_UCODE_DRV_GP1_CLR, CSR_UCODE_SW_BIT_RFKILL);
3011
3012 clear_bit(STATUS_RF_KILL_SW, &priv->status);
3013 spin_unlock_irqrestore(&priv->lock, flags);
3014
3015 /* wake up ucode */
3016 msleep(10);
3017
3018 spin_lock_irqsave(&priv->lock, flags);
3019 iwl4965_read32(priv, CSR_UCODE_DRV_GP1);
3020 if (!iwl4965_grab_nic_access(priv))
3021 iwl4965_release_nic_access(priv);
3022 spin_unlock_irqrestore(&priv->lock, flags);
3023
3024 if (test_bit(STATUS_RF_KILL_HW, &priv->status)) {
3025 IWL_DEBUG_RF_KILL("Can not turn radio back on - "
3026 "disabled by HW switch\n");
3027 return;
3028 }
3029
3030 queue_work(priv->workqueue, &priv->restart);
3031 return;
3032 }
3033
3034 void iwl4965_set_decrypted_flag(struct iwl4965_priv *priv, struct sk_buff *skb,
3035 u32 decrypt_res, struct ieee80211_rx_status *stats)
3036 {
3037 u16 fc =
3038 le16_to_cpu(((struct ieee80211_hdr *)skb->data)->frame_control);
3039
3040 if (priv->active_rxon.filter_flags & RXON_FILTER_DIS_DECRYPT_MSK)
3041 return;
3042
3043 if (!(fc & IEEE80211_FCTL_PROTECTED))
3044 return;
3045
3046 IWL_DEBUG_RX("decrypt_res:0x%x\n", decrypt_res);
3047 switch (decrypt_res & RX_RES_STATUS_SEC_TYPE_MSK) {
3048 case RX_RES_STATUS_SEC_TYPE_TKIP:
3049 if ((decrypt_res & RX_RES_STATUS_DECRYPT_TYPE_MSK) ==
3050 RX_RES_STATUS_BAD_ICV_MIC)
3051 stats->flag |= RX_FLAG_MMIC_ERROR;
3052 case RX_RES_STATUS_SEC_TYPE_WEP:
3053 case RX_RES_STATUS_SEC_TYPE_CCMP:
3054 if ((decrypt_res & RX_RES_STATUS_DECRYPT_TYPE_MSK) ==
3055 RX_RES_STATUS_DECRYPT_OK) {
3056 IWL_DEBUG_RX("hw decrypt successfully!!!\n");
3057 stats->flag |= RX_FLAG_DECRYPTED;
3058 }
3059 break;
3060
3061 default:
3062 break;
3063 }
3064 }
3065
3066
3067 #define IWL_PACKET_RETRY_TIME HZ
3068
3069 int iwl4965_is_duplicate_packet(struct iwl4965_priv *priv, struct ieee80211_hdr *header)
3070 {
3071 u16 sc = le16_to_cpu(header->seq_ctrl);
3072 u16 seq = (sc & IEEE80211_SCTL_SEQ) >> 4;
3073 u16 frag = sc & IEEE80211_SCTL_FRAG;
3074 u16 *last_seq, *last_frag;
3075 unsigned long *last_time;
3076
3077 switch (priv->iw_mode) {
3078 case IEEE80211_IF_TYPE_IBSS:{
3079 struct list_head *p;
3080 struct iwl4965_ibss_seq *entry = NULL;
3081 u8 *mac = header->addr2;
3082 int index = mac[5] & (IWL_IBSS_MAC_HASH_SIZE - 1);
3083
3084 __list_for_each(p, &priv->ibss_mac_hash[index]) {
3085 entry = list_entry(p, struct iwl4965_ibss_seq, list);
3086 if (!compare_ether_addr(entry->mac, mac))
3087 break;
3088 }
3089 if (p == &priv->ibss_mac_hash[index]) {
3090 entry = kzalloc(sizeof(*entry), GFP_ATOMIC);
3091 if (!entry) {
3092 IWL_ERROR("Cannot malloc new mac entry\n");
3093 return 0;
3094 }
3095 memcpy(entry->mac, mac, ETH_ALEN);
3096 entry->seq_num = seq;
3097 entry->frag_num = frag;
3098 entry->packet_time = jiffies;
3099 list_add(&entry->list, &priv->ibss_mac_hash[index]);
3100 return 0;
3101 }
3102 last_seq = &entry->seq_num;
3103 last_frag = &entry->frag_num;
3104 last_time = &entry->packet_time;
3105 break;
3106 }
3107 case IEEE80211_IF_TYPE_STA:
3108 last_seq = &priv->last_seq_num;
3109 last_frag = &priv->last_frag_num;
3110 last_time = &priv->last_packet_time;
3111 break;
3112 default:
3113 return 0;
3114 }
3115 if ((*last_seq == seq) &&
3116 time_after(*last_time + IWL_PACKET_RETRY_TIME, jiffies)) {
3117 if (*last_frag == frag)
3118 goto drop;
3119 if (*last_frag + 1 != frag)
3120 /* out-of-order fragment */
3121 goto drop;
3122 } else
3123 *last_seq = seq;
3124
3125 *last_frag = frag;
3126 *last_time = jiffies;
3127 return 0;
3128
3129 drop:
3130 return 1;
3131 }
3132
3133 #ifdef CONFIG_IWL4965_SPECTRUM_MEASUREMENT
3134
3135 #include "iwl-spectrum.h"
3136
3137 #define BEACON_TIME_MASK_LOW 0x00FFFFFF
3138 #define BEACON_TIME_MASK_HIGH 0xFF000000
3139 #define TIME_UNIT 1024
3140
3141 /*
3142 * extended beacon time format
3143 * time in usec will be changed into a 32-bit value in 8:24 format
3144 * the high 1 byte is the beacon counts
3145 * the lower 3 bytes is the time in usec within one beacon interval
3146 */
3147
3148 static u32 iwl4965_usecs_to_beacons(u32 usec, u32 beacon_interval)
3149 {
3150 u32 quot;
3151 u32 rem;
3152 u32 interval = beacon_interval * 1024;
3153
3154 if (!interval || !usec)
3155 return 0;
3156
3157 quot = (usec / interval) & (BEACON_TIME_MASK_HIGH >> 24);
3158 rem = (usec % interval) & BEACON_TIME_MASK_LOW;
3159
3160 return (quot << 24) + rem;
3161 }
3162
3163 /* base is usually what we get from ucode with each received frame,
3164 * the same as HW timer counter counting down
3165 */
3166
3167 static __le32 iwl4965_add_beacon_time(u32 base, u32 addon, u32 beacon_interval)
3168 {
3169 u32 base_low = base & BEACON_TIME_MASK_LOW;
3170 u32 addon_low = addon & BEACON_TIME_MASK_LOW;
3171 u32 interval = beacon_interval * TIME_UNIT;
3172 u32 res = (base & BEACON_TIME_MASK_HIGH) +
3173 (addon & BEACON_TIME_MASK_HIGH);
3174
3175 if (base_low > addon_low)
3176 res += base_low - addon_low;
3177 else if (base_low < addon_low) {
3178 res += interval + base_low - addon_low;
3179 res += (1 << 24);
3180 } else
3181 res += (1 << 24);
3182
3183 return cpu_to_le32(res);
3184 }
3185
3186 static int iwl4965_get_measurement(struct iwl4965_priv *priv,
3187 struct ieee80211_measurement_params *params,
3188 u8 type)
3189 {
3190 struct iwl4965_spectrum_cmd spectrum;
3191 struct iwl4965_rx_packet *res;
3192 struct iwl4965_host_cmd cmd = {
3193 .id = REPLY_SPECTRUM_MEASUREMENT_CMD,
3194 .data = (void *)&spectrum,
3195 .meta.flags = CMD_WANT_SKB,
3196 };
3197 u32 add_time = le64_to_cpu(params->start_time);
3198 int rc;
3199 int spectrum_resp_status;
3200 int duration = le16_to_cpu(params->duration);
3201
3202 if (iwl4965_is_associated(priv))
3203 add_time =
3204 iwl4965_usecs_to_beacons(
3205 le64_to_cpu(params->start_time) - priv->last_tsf,
3206 le16_to_cpu(priv->rxon_timing.beacon_interval));
3207
3208 memset(&spectrum, 0, sizeof(spectrum));
3209
3210 spectrum.channel_count = cpu_to_le16(1);
3211 spectrum.flags =
3212 RXON_FLG_TSF2HOST_MSK | RXON_FLG_ANT_A_MSK | RXON_FLG_DIS_DIV_MSK;
3213 spectrum.filter_flags = MEASUREMENT_FILTER_FLAG;
3214 cmd.len = sizeof(spectrum);
3215 spectrum.len = cpu_to_le16(cmd.len - sizeof(spectrum.len));
3216
3217 if (iwl4965_is_associated(priv))
3218 spectrum.start_time =
3219 iwl4965_add_beacon_time(priv->last_beacon_time,
3220 add_time,
3221 le16_to_cpu(priv->rxon_timing.beacon_interval));
3222 else
3223 spectrum.start_time = 0;
3224
3225 spectrum.channels[0].duration = cpu_to_le32(duration * TIME_UNIT);
3226 spectrum.channels[0].channel = params->channel;
3227 spectrum.channels[0].type = type;
3228 if (priv->active_rxon.flags & RXON_FLG_BAND_24G_MSK)
3229 spectrum.flags |= RXON_FLG_BAND_24G_MSK |
3230 RXON_FLG_AUTO_DETECT_MSK | RXON_FLG_TGG_PROTECT_MSK;
3231
3232 rc = iwl4965_send_cmd_sync(priv, &cmd);
3233 if (rc)
3234 return rc;
3235
3236 res = (struct iwl4965_rx_packet *)cmd.meta.u.skb->data;
3237 if (res->hdr.flags & IWL_CMD_FAILED_MSK) {
3238 IWL_ERROR("Bad return from REPLY_RX_ON_ASSOC command\n");
3239 rc = -EIO;
3240 }
3241
3242 spectrum_resp_status = le16_to_cpu(res->u.spectrum.status);
3243 switch (spectrum_resp_status) {
3244 case 0: /* Command will be handled */
3245 if (res->u.spectrum.id != 0xff) {
3246 IWL_DEBUG_INFO
3247 ("Replaced existing measurement: %d\n",
3248 res->u.spectrum.id);
3249 priv->measurement_status &= ~MEASUREMENT_READY;
3250 }
3251 priv->measurement_status |= MEASUREMENT_ACTIVE;
3252 rc = 0;
3253 break;
3254
3255 case 1: /* Command will not be handled */
3256 rc = -EAGAIN;
3257 break;
3258 }
3259
3260 dev_kfree_skb_any(cmd.meta.u.skb);
3261
3262 return rc;
3263 }
3264 #endif
3265
3266 static void iwl4965_txstatus_to_ieee(struct iwl4965_priv *priv,
3267 struct iwl4965_tx_info *tx_sta)
3268 {
3269
3270 tx_sta->status.ack_signal = 0;
3271 tx_sta->status.excessive_retries = 0;
3272 tx_sta->status.queue_length = 0;
3273 tx_sta->status.queue_number = 0;
3274
3275 if (in_interrupt())
3276 ieee80211_tx_status_irqsafe(priv->hw,
3277 tx_sta->skb[0], &(tx_sta->status));
3278 else
3279 ieee80211_tx_status(priv->hw,
3280 tx_sta->skb[0], &(tx_sta->status));
3281
3282 tx_sta->skb[0] = NULL;
3283 }
3284
3285 /**
3286 * iwl4965_tx_queue_reclaim - Reclaim Tx queue entries already Tx'd
3287 *
3288 * When FW advances 'R' index, all entries between old and new 'R' index
3289 * need to be reclaimed. As result, some free space forms. If there is
3290 * enough free space (> low mark), wake the stack that feeds us.
3291 */
3292 int iwl4965_tx_queue_reclaim(struct iwl4965_priv *priv, int txq_id, int index)
3293 {
3294 struct iwl4965_tx_queue *txq = &priv->txq[txq_id];
3295 struct iwl4965_queue *q = &txq->q;
3296 int nfreed = 0;
3297
3298 if ((index >= q->n_bd) || (x2_queue_used(q, index) == 0)) {
3299 IWL_ERROR("Read index for DMA queue txq id (%d), index %d, "
3300 "is out of range [0-%d] %d %d.\n", txq_id,
3301 index, q->n_bd, q->write_ptr, q->read_ptr);
3302 return 0;
3303 }
3304
3305 for (index = iwl4965_queue_inc_wrap(index, q->n_bd);
3306 q->read_ptr != index;
3307 q->read_ptr = iwl4965_queue_inc_wrap(q->read_ptr, q->n_bd)) {
3308 if (txq_id != IWL_CMD_QUEUE_NUM) {
3309 iwl4965_txstatus_to_ieee(priv,
3310 &(txq->txb[txq->q.read_ptr]));
3311 iwl4965_hw_txq_free_tfd(priv, txq);
3312 } else if (nfreed > 1) {
3313 IWL_ERROR("HCMD skipped: index (%d) %d %d\n", index,
3314 q->write_ptr, q->read_ptr);
3315 queue_work(priv->workqueue, &priv->restart);
3316 }
3317 nfreed++;
3318 }
3319
3320 /* if (iwl4965_queue_space(q) > q->low_mark && (txq_id >= 0) &&
3321 (txq_id != IWL_CMD_QUEUE_NUM) &&
3322 priv->mac80211_registered)
3323 ieee80211_wake_queue(priv->hw, txq_id); */
3324
3325
3326 return nfreed;
3327 }
3328
3329 static int iwl4965_is_tx_success(u32 status)
3330 {
3331 status &= TX_STATUS_MSK;
3332 return (status == TX_STATUS_SUCCESS)
3333 || (status == TX_STATUS_DIRECT_DONE);
3334 }
3335
3336 /******************************************************************************
3337 *
3338 * Generic RX handler implementations
3339 *
3340 ******************************************************************************/
3341 #ifdef CONFIG_IWL4965_HT
3342
3343 static inline int iwl4965_get_ra_sta_id(struct iwl4965_priv *priv,
3344 struct ieee80211_hdr *hdr)
3345 {
3346 if (priv->iw_mode == IEEE80211_IF_TYPE_STA)
3347 return IWL_AP_ID;
3348 else {
3349 u8 *da = ieee80211_get_DA(hdr);
3350 return iwl4965_hw_find_station(priv, da);
3351 }
3352 }
3353
3354 static struct ieee80211_hdr *iwl4965_tx_queue_get_hdr(
3355 struct iwl4965_priv *priv, int txq_id, int idx)
3356 {
3357 if (priv->txq[txq_id].txb[idx].skb[0])
3358 return (struct ieee80211_hdr *)priv->txq[txq_id].
3359 txb[idx].skb[0]->data;
3360 return NULL;
3361 }
3362
3363 static inline u32 iwl4965_get_scd_ssn(struct iwl4965_tx_resp *tx_resp)
3364 {
3365 __le32 *scd_ssn = (__le32 *)((u32 *)&tx_resp->status +
3366 tx_resp->frame_count);
3367 return le32_to_cpu(*scd_ssn) & MAX_SN;
3368
3369 }
3370
3371 /**
3372 * iwl4965_tx_status_reply_tx - Handle Tx rspnse for frames in aggregation queue
3373 */
3374 static int iwl4965_tx_status_reply_tx(struct iwl4965_priv *priv,
3375 struct iwl4965_ht_agg *agg,
3376 struct iwl4965_tx_resp_agg *tx_resp,
3377 u16 start_idx)
3378 {
3379 u16 status;
3380 struct agg_tx_status *frame_status = &tx_resp->status;
3381 struct ieee80211_tx_status *tx_status = NULL;
3382 struct ieee80211_hdr *hdr = NULL;
3383 int i, sh;
3384 int txq_id, idx;
3385 u16 seq;
3386
3387 if (agg->wait_for_ba)
3388 IWL_DEBUG_TX_REPLY("got tx response w/o block-ack\n");
3389
3390 agg->frame_count = tx_resp->frame_count;
3391 agg->start_idx = start_idx;
3392 agg->rate_n_flags = le32_to_cpu(tx_resp->rate_n_flags);
3393 agg->bitmap = 0;
3394
3395 /* # frames attempted by Tx command */
3396 if (agg->frame_count == 1) {
3397 /* Only one frame was attempted; no block-ack will arrive */
3398 status = le16_to_cpu(frame_status[0].status);
3399 seq = le16_to_cpu(frame_status[0].sequence);
3400 idx = SEQ_TO_INDEX(seq);
3401 txq_id = SEQ_TO_QUEUE(seq);
3402
3403 /* FIXME: code repetition */
3404 IWL_DEBUG_TX_REPLY("FrameCnt = %d, StartIdx=%d idx=%d\n",
3405 agg->frame_count, agg->start_idx, idx);
3406
3407 tx_status = &(priv->txq[txq_id].txb[idx].status);
3408 tx_status->retry_count = tx_resp->failure_frame;
3409 tx_status->queue_number = status & 0xff;
3410 tx_status->queue_length = tx_resp->failure_rts;
3411 tx_status->control.flags &= ~IEEE80211_TXCTL_AMPDU;
3412 tx_status->flags = iwl4965_is_tx_success(status)?
3413 IEEE80211_TX_STATUS_ACK : 0;
3414 iwl4965_hwrate_to_tx_control(priv,
3415 le32_to_cpu(tx_resp->rate_n_flags),
3416 &tx_status->control);
3417 /* FIXME: code repetition end */
3418
3419 IWL_DEBUG_TX_REPLY("1 Frame 0x%x failure :%d\n",
3420 status & 0xff, tx_resp->failure_frame);
3421 IWL_DEBUG_TX_REPLY("Rate Info rate_n_flags=%x\n",
3422 iwl4965_hw_get_rate_n_flags(tx_resp->rate_n_flags));
3423
3424 agg->wait_for_ba = 0;
3425 } else {
3426 /* Two or more frames were attempted; expect block-ack */
3427 u64 bitmap = 0;
3428 int start = agg->start_idx;
3429
3430 /* Construct bit-map of pending frames within Tx window */
3431 for (i = 0; i < agg->frame_count; i++) {
3432 u16 sc;
3433 status = le16_to_cpu(frame_status[i].status);
3434 seq = le16_to_cpu(frame_status[i].sequence);
3435 idx = SEQ_TO_INDEX(seq);
3436 txq_id = SEQ_TO_QUEUE(seq);
3437
3438 if (status & (AGG_TX_STATE_FEW_BYTES_MSK |
3439 AGG_TX_STATE_ABORT_MSK))
3440 continue;
3441
3442 IWL_DEBUG_TX_REPLY("FrameCnt = %d, txq_id=%d idx=%d\n",
3443 agg->frame_count, txq_id, idx);
3444
3445 hdr = iwl4965_tx_queue_get_hdr(priv, txq_id, idx);
3446
3447 sc = le16_to_cpu(hdr->seq_ctrl);
3448 if (idx != (SEQ_TO_SN(sc) & 0xff)) {
3449 IWL_ERROR("BUG_ON idx doesn't match seq control"
3450 " idx=%d, seq_idx=%d, seq=%d\n",
3451 idx, SEQ_TO_SN(sc),
3452 hdr->seq_ctrl);
3453 return -1;
3454 }
3455
3456 IWL_DEBUG_TX_REPLY("AGG Frame i=%d idx %d seq=%d\n",
3457 i, idx, SEQ_TO_SN(sc));
3458
3459 sh = idx - start;
3460 if (sh > 64) {
3461 sh = (start - idx) + 0xff;
3462 bitmap = bitmap << sh;
3463 sh = 0;
3464 start = idx;
3465 } else if (sh < -64)
3466 sh = 0xff - (start - idx);
3467 else if (sh < 0) {
3468 sh = start - idx;
3469 start = idx;
3470 bitmap = bitmap << sh;
3471 sh = 0;
3472 }
3473 bitmap |= (1 << sh);
3474 IWL_DEBUG_TX_REPLY("start=%d bitmap=0x%x\n",
3475 start, (u32)(bitmap & 0xFFFFFFFF));
3476 }
3477
3478 agg->bitmap = bitmap;
3479 agg->start_idx = start;
3480 agg->rate_n_flags = le32_to_cpu(tx_resp->rate_n_flags);
3481 IWL_DEBUG_TX_REPLY("Frames %d start_idx=%d bitmap=0x%llx\n",
3482 agg->frame_count, agg->start_idx,
3483 agg->bitmap);
3484
3485 if (bitmap)
3486 agg->wait_for_ba = 1;
3487 }
3488 return 0;
3489 }
3490 #endif
3491
3492 /**
3493 * iwl4965_rx_reply_tx - Handle standard (non-aggregation) Tx response
3494 */
3495 static void iwl4965_rx_reply_tx(struct iwl4965_priv *priv,
3496 struct iwl4965_rx_mem_buffer *rxb)
3497 {
3498 struct iwl4965_rx_packet *pkt = (void *)rxb->skb->data;
3499 u16 sequence = le16_to_cpu(pkt->hdr.sequence);
3500 int txq_id = SEQ_TO_QUEUE(sequence);
3501 int index = SEQ_TO_INDEX(sequence);
3502 struct iwl4965_tx_queue *txq = &priv->txq[txq_id];
3503 struct ieee80211_tx_status *tx_status;
3504 struct iwl4965_tx_resp *tx_resp = (void *)&pkt->u.raw[0];
3505 u32 status = le32_to_cpu(tx_resp->status);
3506 #ifdef CONFIG_IWL4965_HT
3507 int tid = MAX_TID_COUNT, sta_id = IWL_INVALID_STATION;
3508 struct ieee80211_hdr *hdr;
3509 __le16 *qc;
3510 #endif
3511
3512 if ((index >= txq->q.n_bd) || (x2_queue_used(&txq->q, index) == 0)) {
3513 IWL_ERROR("Read index for DMA queue txq_id (%d) index %d "
3514 "is out of range [0-%d] %d %d\n", txq_id,
3515 index, txq->q.n_bd, txq->q.write_ptr,
3516 txq->q.read_ptr);
3517 return;
3518 }
3519
3520 #ifdef CONFIG_IWL4965_HT
3521 hdr = iwl4965_tx_queue_get_hdr(priv, txq_id, index);
3522 qc = ieee80211_get_qos_ctrl(hdr);
3523
3524 if (qc)
3525 tid = le16_to_cpu(*qc) & 0xf;
3526
3527 sta_id = iwl4965_get_ra_sta_id(priv, hdr);
3528 if (txq->sched_retry && unlikely(sta_id == IWL_INVALID_STATION)) {
3529 IWL_ERROR("Station not known\n");
3530 return;
3531 }
3532
3533 if (txq->sched_retry) {
3534 const u32 scd_ssn = iwl4965_get_scd_ssn(tx_resp);
3535 struct iwl4965_ht_agg *agg = NULL;
3536
3537 if (!qc)
3538 return;
3539
3540 agg = &priv->stations[sta_id].tid[tid].agg;
3541
3542 iwl4965_tx_status_reply_tx(priv, agg,
3543 (struct iwl4965_tx_resp_agg *)tx_resp, index);
3544
3545 if ((tx_resp->frame_count == 1) &&
3546 !iwl4965_is_tx_success(status)) {
3547 /* TODO: send BAR */
3548 }
3549
3550 if (txq->q.read_ptr != (scd_ssn & 0xff)) {
3551 int freed;
3552 index = iwl4965_queue_dec_wrap(scd_ssn & 0xff, txq->q.n_bd);
3553 IWL_DEBUG_TX_REPLY("Retry scheduler reclaim scd_ssn "
3554 "%d index %d\n", scd_ssn , index);
3555 freed = iwl4965_tx_queue_reclaim(priv, txq_id, index);
3556 priv->stations[sta_id].tid[tid].tfds_in_queue -= freed;
3557
3558 if (iwl4965_queue_space(&txq->q) > txq->q.low_mark &&
3559 txq_id >= 0 && priv->mac80211_registered &&
3560 agg->state != IWL_EMPTYING_HW_QUEUE_DELBA)
3561 ieee80211_wake_queue(priv->hw, txq_id);
3562
3563 iwl4965_check_empty_hw_queue(priv, sta_id, tid, txq_id);
3564 }
3565 } else {
3566 #endif /* CONFIG_IWL4965_HT */
3567 tx_status = &(txq->txb[txq->q.read_ptr].status);
3568
3569 tx_status->retry_count = tx_resp->failure_frame;
3570 tx_status->queue_number = status;
3571 tx_status->queue_length = tx_resp->bt_kill_count;
3572 tx_status->queue_length |= tx_resp->failure_rts;
3573 tx_status->flags =
3574 iwl4965_is_tx_success(status) ? IEEE80211_TX_STATUS_ACK : 0;
3575 iwl4965_hwrate_to_tx_control(priv, le32_to_cpu(tx_resp->rate_n_flags),
3576 &tx_status->control);
3577
3578 IWL_DEBUG_TX("Tx queue %d Status %s (0x%08x) rate_n_flags 0x%x "
3579 "retries %d\n", txq_id, iwl4965_get_tx_fail_reason(status),
3580 status, le32_to_cpu(tx_resp->rate_n_flags),
3581 tx_resp->failure_frame);
3582
3583 IWL_DEBUG_TX_REPLY("Tx queue reclaim %d\n", index);
3584 if (index != -1) {
3585 int freed = iwl4965_tx_queue_reclaim(priv, txq_id, index);
3586 #ifdef CONFIG_IWL4965_HT
3587 if (tid != MAX_TID_COUNT)
3588 priv->stations[sta_id].tid[tid].tfds_in_queue -= freed;
3589 if (iwl4965_queue_space(&txq->q) > txq->q.low_mark &&
3590 (txq_id >= 0) &&
3591 priv->mac80211_registered)
3592 ieee80211_wake_queue(priv->hw, txq_id);
3593 if (tid != MAX_TID_COUNT)
3594 iwl4965_check_empty_hw_queue(priv, sta_id, tid, txq_id);
3595 #endif
3596 }
3597 #ifdef CONFIG_IWL4965_HT
3598 }
3599 #endif /* CONFIG_IWL4965_HT */
3600
3601 if (iwl_check_bits(status, TX_ABORT_REQUIRED_MSK))
3602 IWL_ERROR("TODO: Implement Tx ABORT REQUIRED!!!\n");
3603 }
3604
3605
3606 static void iwl4965_rx_reply_alive(struct iwl4965_priv *priv,
3607 struct iwl4965_rx_mem_buffer *rxb)
3608 {
3609 struct iwl4965_rx_packet *pkt = (void *)rxb->skb->data;
3610 struct iwl4965_alive_resp *palive;
3611 struct delayed_work *pwork;
3612
3613 palive = &pkt->u.alive_frame;
3614
3615 IWL_DEBUG_INFO("Alive ucode status 0x%08X revision "
3616 "0x%01X 0x%01X\n",
3617 palive->is_valid, palive->ver_type,
3618 palive->ver_subtype);
3619
3620 if (palive->ver_subtype == INITIALIZE_SUBTYPE) {
3621 IWL_DEBUG_INFO("Initialization Alive received.\n");
3622 memcpy(&priv->card_alive_init,
3623 &pkt->u.alive_frame,
3624 sizeof(struct iwl4965_init_alive_resp));
3625 pwork = &priv->init_alive_start;
3626 } else {
3627 IWL_DEBUG_INFO("Runtime Alive received.\n");
3628 memcpy(&priv->card_alive, &pkt->u.alive_frame,
3629 sizeof(struct iwl4965_alive_resp));
3630 pwork = &priv->alive_start;
3631 }
3632
3633 /* We delay the ALIVE response by 5ms to
3634 * give the HW RF Kill time to activate... */
3635 if (palive->is_valid == UCODE_VALID_OK)
3636 queue_delayed_work(priv->workqueue, pwork,
3637 msecs_to_jiffies(5));
3638 else
3639 IWL_WARNING("uCode did not respond OK.\n");
3640 }
3641
3642 static void iwl4965_rx_reply_add_sta(struct iwl4965_priv *priv,
3643 struct iwl4965_rx_mem_buffer *rxb)
3644 {
3645 struct iwl4965_rx_packet *pkt = (void *)rxb->skb->data;
3646
3647 IWL_DEBUG_RX("Received REPLY_ADD_STA: 0x%02X\n", pkt->u.status);
3648 return;
3649 }
3650
3651 static void iwl4965_rx_reply_error(struct iwl4965_priv *priv,
3652 struct iwl4965_rx_mem_buffer *rxb)
3653 {
3654 struct iwl4965_rx_packet *pkt = (void *)rxb->skb->data;
3655
3656 IWL_ERROR("Error Reply type 0x%08X cmd %s (0x%02X) "
3657 "seq 0x%04X ser 0x%08X\n",
3658 le32_to_cpu(pkt->u.err_resp.error_type),
3659 get_cmd_string(pkt->u.err_resp.cmd_id),
3660 pkt->u.err_resp.cmd_id,
3661 le16_to_cpu(pkt->u.err_resp.bad_cmd_seq_num),
3662 le32_to_cpu(pkt->u.err_resp.error_info));
3663 }
3664
3665 #define TX_STATUS_ENTRY(x) case TX_STATUS_FAIL_ ## x: return #x
3666
3667 static void iwl4965_rx_csa(struct iwl4965_priv *priv, struct iwl4965_rx_mem_buffer *rxb)
3668 {
3669 struct iwl4965_rx_packet *pkt = (void *)rxb->skb->data;
3670 struct iwl4965_rxon_cmd *rxon = (void *)&priv->active_rxon;
3671 struct iwl4965_csa_notification *csa = &(pkt->u.csa_notif);
3672 IWL_DEBUG_11H("CSA notif: channel %d, status %d\n",
3673 le16_to_cpu(csa->channel), le32_to_cpu(csa->status));
3674 rxon->channel = csa->channel;
3675 priv->staging_rxon.channel = csa->channel;
3676 }
3677
3678 static void iwl4965_rx_spectrum_measure_notif(struct iwl4965_priv *priv,
3679 struct iwl4965_rx_mem_buffer *rxb)
3680 {
3681 #ifdef CONFIG_IWL4965_SPECTRUM_MEASUREMENT
3682 struct iwl4965_rx_packet *pkt = (void *)rxb->skb->data;
3683 struct iwl4965_spectrum_notification *report = &(pkt->u.spectrum_notif);
3684
3685 if (!report->state) {
3686 IWL_DEBUG(IWL_DL_11H | IWL_DL_INFO,
3687 "Spectrum Measure Notification: Start\n");
3688 return;
3689 }
3690
3691 memcpy(&priv->measure_report, report, sizeof(*report));
3692 priv->measurement_status |= MEASUREMENT_READY;
3693 #endif
3694 }
3695
3696 static void iwl4965_rx_pm_sleep_notif(struct iwl4965_priv *priv,
3697 struct iwl4965_rx_mem_buffer *rxb)
3698 {
3699 #ifdef CONFIG_IWL4965_DEBUG
3700 struct iwl4965_rx_packet *pkt = (void *)rxb->skb->data;
3701 struct iwl4965_sleep_notification *sleep = &(pkt->u.sleep_notif);
3702 IWL_DEBUG_RX("sleep mode: %d, src: %d\n",
3703 sleep->pm_sleep_mode, sleep->pm_wakeup_src);
3704 #endif
3705 }
3706
3707 static void iwl4965_rx_pm_debug_statistics_notif(struct iwl4965_priv *priv,
3708 struct iwl4965_rx_mem_buffer *rxb)
3709 {
3710 struct iwl4965_rx_packet *pkt = (void *)rxb->skb->data;
3711 IWL_DEBUG_RADIO("Dumping %d bytes of unhandled "
3712 "notification for %s:\n",
3713 le32_to_cpu(pkt->len), get_cmd_string(pkt->hdr.cmd));
3714 iwl4965_print_hex_dump(IWL_DL_RADIO, pkt->u.raw, le32_to_cpu(pkt->len));
3715 }
3716
3717 static void iwl4965_bg_beacon_update(struct work_struct *work)
3718 {
3719 struct iwl4965_priv *priv =
3720 container_of(work, struct iwl4965_priv, beacon_update);
3721 struct sk_buff *beacon;
3722
3723 /* Pull updated AP beacon from mac80211. will fail if not in AP mode */
3724 beacon = ieee80211_beacon_get(priv->hw, priv->vif, NULL);
3725
3726 if (!beacon) {
3727 IWL_ERROR("update beacon failed\n");
3728 return;
3729 }
3730
3731 mutex_lock(&priv->mutex);
3732 /* new beacon skb is allocated every time; dispose previous.*/
3733 if (priv->ibss_beacon)
3734 dev_kfree_skb(priv->ibss_beacon);
3735
3736 priv->ibss_beacon = beacon;
3737 mutex_unlock(&priv->mutex);
3738
3739 iwl4965_send_beacon_cmd(priv);
3740 }
3741
3742 static void iwl4965_rx_beacon_notif(struct iwl4965_priv *priv,
3743 struct iwl4965_rx_mem_buffer *rxb)
3744 {
3745 #ifdef CONFIG_IWL4965_DEBUG
3746 struct iwl4965_rx_packet *pkt = (void *)rxb->skb->data;
3747 struct iwl4965_beacon_notif *beacon = &(pkt->u.beacon_status);
3748 u8 rate = iwl4965_hw_get_rate(beacon->beacon_notify_hdr.rate_n_flags);
3749
3750 IWL_DEBUG_RX("beacon status %x retries %d iss %d "
3751 "tsf %d %d rate %d\n",
3752 le32_to_cpu(beacon->beacon_notify_hdr.status) & TX_STATUS_MSK,
3753 beacon->beacon_notify_hdr.failure_frame,
3754 le32_to_cpu(beacon->ibss_mgr_status),
3755 le32_to_cpu(beacon->high_tsf),
3756 le32_to_cpu(beacon->low_tsf), rate);
3757 #endif
3758
3759 if ((priv->iw_mode == IEEE80211_IF_TYPE_AP) &&
3760 (!test_bit(STATUS_EXIT_PENDING, &priv->status)))
3761 queue_work(priv->workqueue, &priv->beacon_update);
3762 }
3763
3764 /* Service response to REPLY_SCAN_CMD (0x80) */
3765 static void iwl4965_rx_reply_scan(struct iwl4965_priv *priv,
3766 struct iwl4965_rx_mem_buffer *rxb)
3767 {
3768 #ifdef CONFIG_IWL4965_DEBUG
3769 struct iwl4965_rx_packet *pkt = (void *)rxb->skb->data;
3770 struct iwl4965_scanreq_notification *notif =
3771 (struct iwl4965_scanreq_notification *)pkt->u.raw;
3772
3773 IWL_DEBUG_RX("Scan request status = 0x%x\n", notif->status);
3774 #endif
3775 }
3776
3777 /* Service SCAN_START_NOTIFICATION (0x82) */
3778 static void iwl4965_rx_scan_start_notif(struct iwl4965_priv *priv,
3779 struct iwl4965_rx_mem_buffer *rxb)
3780 {
3781 struct iwl4965_rx_packet *pkt = (void *)rxb->skb->data;
3782 struct iwl4965_scanstart_notification *notif =
3783 (struct iwl4965_scanstart_notification *)pkt->u.raw;
3784 priv->scan_start_tsf = le32_to_cpu(notif->tsf_low);
3785 IWL_DEBUG_SCAN("Scan start: "
3786 "%d [802.11%s] "
3787 "(TSF: 0x%08X:%08X) - %d (beacon timer %u)\n",
3788 notif->channel,
3789 notif->band ? "bg" : "a",
3790 notif->tsf_high,
3791 notif->tsf_low, notif->status, notif->beacon_timer);
3792 }
3793
3794 /* Service SCAN_RESULTS_NOTIFICATION (0x83) */
3795 static void iwl4965_rx_scan_results_notif(struct iwl4965_priv *priv,
3796 struct iwl4965_rx_mem_buffer *rxb)
3797 {
3798 struct iwl4965_rx_packet *pkt = (void *)rxb->skb->data;
3799 struct iwl4965_scanresults_notification *notif =
3800 (struct iwl4965_scanresults_notification *)pkt->u.raw;
3801
3802 IWL_DEBUG_SCAN("Scan ch.res: "
3803 "%d [802.11%s] "
3804 "(TSF: 0x%08X:%08X) - %d "
3805 "elapsed=%lu usec (%dms since last)\n",
3806 notif->channel,
3807 notif->band ? "bg" : "a",
3808 le32_to_cpu(notif->tsf_high),
3809 le32_to_cpu(notif->tsf_low),
3810 le32_to_cpu(notif->statistics[0]),
3811 le32_to_cpu(notif->tsf_low) - priv->scan_start_tsf,
3812 jiffies_to_msecs(elapsed_jiffies
3813 (priv->last_scan_jiffies, jiffies)));
3814
3815 priv->last_scan_jiffies = jiffies;
3816 priv->next_scan_jiffies = 0;
3817 }
3818
3819 /* Service SCAN_COMPLETE_NOTIFICATION (0x84) */
3820 static void iwl4965_rx_scan_complete_notif(struct iwl4965_priv *priv,
3821 struct iwl4965_rx_mem_buffer *rxb)
3822 {
3823 struct iwl4965_rx_packet *pkt = (void *)rxb->skb->data;
3824 struct iwl4965_scancomplete_notification *scan_notif = (void *)pkt->u.raw;
3825
3826 IWL_DEBUG_SCAN("Scan complete: %d channels (TSF 0x%08X:%08X) - %d\n",
3827 scan_notif->scanned_channels,
3828 scan_notif->tsf_low,
3829 scan_notif->tsf_high, scan_notif->status);
3830
3831 /* The HW is no longer scanning */
3832 clear_bit(STATUS_SCAN_HW, &priv->status);
3833
3834 /* The scan completion notification came in, so kill that timer... */
3835 cancel_delayed_work(&priv->scan_check);
3836
3837 IWL_DEBUG_INFO("Scan pass on %sGHz took %dms\n",
3838 (priv->scan_bands == 2) ? "2.4" : "5.2",
3839 jiffies_to_msecs(elapsed_jiffies
3840 (priv->scan_pass_start, jiffies)));
3841
3842 /* Remove this scanned band from the list
3843 * of pending bands to scan */
3844 priv->scan_bands--;
3845
3846 /* If a request to abort was given, or the scan did not succeed
3847 * then we reset the scan state machine and terminate,
3848 * re-queuing another scan if one has been requested */
3849 if (test_bit(STATUS_SCAN_ABORTING, &priv->status)) {
3850 IWL_DEBUG_INFO("Aborted scan completed.\n");
3851 clear_bit(STATUS_SCAN_ABORTING, &priv->status);
3852 } else {
3853 /* If there are more bands on this scan pass reschedule */
3854 if (priv->scan_bands > 0)
3855 goto reschedule;
3856 }
3857
3858 priv->last_scan_jiffies = jiffies;
3859 priv->next_scan_jiffies = 0;
3860 IWL_DEBUG_INFO("Setting scan to off\n");
3861
3862 clear_bit(STATUS_SCANNING, &priv->status);
3863
3864 IWL_DEBUG_INFO("Scan took %dms\n",
3865 jiffies_to_msecs(elapsed_jiffies(priv->scan_start, jiffies)));
3866
3867 queue_work(priv->workqueue, &priv->scan_completed);
3868
3869 return;
3870
3871 reschedule:
3872 priv->scan_pass_start = jiffies;
3873 queue_work(priv->workqueue, &priv->request_scan);
3874 }
3875
3876 /* Handle notification from uCode that card's power state is changing
3877 * due to software, hardware, or critical temperature RFKILL */
3878 static void iwl4965_rx_card_state_notif(struct iwl4965_priv *priv,
3879 struct iwl4965_rx_mem_buffer *rxb)
3880 {
3881 struct iwl4965_rx_packet *pkt = (void *)rxb->skb->data;
3882 u32 flags = le32_to_cpu(pkt->u.card_state_notif.flags);
3883 unsigned long status = priv->status;
3884
3885 IWL_DEBUG_RF_KILL("Card state received: HW:%s SW:%s\n",
3886 (flags & HW_CARD_DISABLED) ? "Kill" : "On",
3887 (flags & SW_CARD_DISABLED) ? "Kill" : "On");
3888
3889 if (flags & (SW_CARD_DISABLED | HW_CARD_DISABLED |
3890 RF_CARD_DISABLED)) {
3891
3892 iwl4965_write32(priv, CSR_UCODE_DRV_GP1_SET,
3893 CSR_UCODE_DRV_GP1_BIT_CMD_BLOCKED);
3894
3895 if (!iwl4965_grab_nic_access(priv)) {
3896 iwl4965_write_direct32(
3897 priv, HBUS_TARG_MBX_C,
3898 HBUS_TARG_MBX_C_REG_BIT_CMD_BLOCKED);
3899
3900 iwl4965_release_nic_access(priv);
3901 }
3902
3903 if (!(flags & RXON_CARD_DISABLED)) {
3904 iwl4965_write32(priv, CSR_UCODE_DRV_GP1_CLR,
3905 CSR_UCODE_DRV_GP1_BIT_CMD_BLOCKED);
3906 if (!iwl4965_grab_nic_access(priv)) {
3907 iwl4965_write_direct32(
3908 priv, HBUS_TARG_MBX_C,
3909 HBUS_TARG_MBX_C_REG_BIT_CMD_BLOCKED);
3910
3911 iwl4965_release_nic_access(priv);
3912 }
3913 }
3914
3915 if (flags & RF_CARD_DISABLED) {
3916 iwl4965_write32(priv, CSR_UCODE_DRV_GP1_SET,
3917 CSR_UCODE_DRV_GP1_REG_BIT_CT_KILL_EXIT);
3918 iwl4965_read32(priv, CSR_UCODE_DRV_GP1);
3919 if (!iwl4965_grab_nic_access(priv))
3920 iwl4965_release_nic_access(priv);
3921 }
3922 }
3923
3924 if (flags & HW_CARD_DISABLED)
3925 set_bit(STATUS_RF_KILL_HW, &priv->status);
3926 else
3927 clear_bit(STATUS_RF_KILL_HW, &priv->status);
3928
3929
3930 if (flags & SW_CARD_DISABLED)
3931 set_bit(STATUS_RF_KILL_SW, &priv->status);
3932 else
3933 clear_bit(STATUS_RF_KILL_SW, &priv->status);
3934
3935 if (!(flags & RXON_CARD_DISABLED))
3936 iwl4965_scan_cancel(priv);
3937
3938 if ((test_bit(STATUS_RF_KILL_HW, &status) !=
3939 test_bit(STATUS_RF_KILL_HW, &priv->status)) ||
3940 (test_bit(STATUS_RF_KILL_SW, &status) !=
3941 test_bit(STATUS_RF_KILL_SW, &priv->status)))
3942 queue_work(priv->workqueue, &priv->rf_kill);
3943 else
3944 wake_up_interruptible(&priv->wait_command_queue);
3945 }
3946
3947 /**
3948 * iwl4965_setup_rx_handlers - Initialize Rx handler callbacks
3949 *
3950 * Setup the RX handlers for each of the reply types sent from the uCode
3951 * to the host.
3952 *
3953 * This function chains into the hardware specific files for them to setup
3954 * any hardware specific handlers as well.
3955 */
3956 static void iwl4965_setup_rx_handlers(struct iwl4965_priv *priv)
3957 {
3958 priv->rx_handlers[REPLY_ALIVE] = iwl4965_rx_reply_alive;
3959 priv->rx_handlers[REPLY_ADD_STA] = iwl4965_rx_reply_add_sta;
3960 priv->rx_handlers[REPLY_ERROR] = iwl4965_rx_reply_error;
3961 priv->rx_handlers[CHANNEL_SWITCH_NOTIFICATION] = iwl4965_rx_csa;
3962 priv->rx_handlers[SPECTRUM_MEASURE_NOTIFICATION] =
3963 iwl4965_rx_spectrum_measure_notif;
3964 priv->rx_handlers[PM_SLEEP_NOTIFICATION] = iwl4965_rx_pm_sleep_notif;
3965 priv->rx_handlers[PM_DEBUG_STATISTIC_NOTIFIC] =
3966 iwl4965_rx_pm_debug_statistics_notif;
3967 priv->rx_handlers[BEACON_NOTIFICATION] = iwl4965_rx_beacon_notif;
3968
3969 /*
3970 * The same handler is used for both the REPLY to a discrete
3971 * statistics request from the host as well as for the periodic
3972 * statistics notifications (after received beacons) from the uCode.
3973 */
3974 priv->rx_handlers[REPLY_STATISTICS_CMD] = iwl4965_hw_rx_statistics;
3975 priv->rx_handlers[STATISTICS_NOTIFICATION] = iwl4965_hw_rx_statistics;
3976
3977 priv->rx_handlers[REPLY_SCAN_CMD] = iwl4965_rx_reply_scan;
3978 priv->rx_handlers[SCAN_START_NOTIFICATION] = iwl4965_rx_scan_start_notif;
3979 priv->rx_handlers[SCAN_RESULTS_NOTIFICATION] =
3980 iwl4965_rx_scan_results_notif;
3981 priv->rx_handlers[SCAN_COMPLETE_NOTIFICATION] =
3982 iwl4965_rx_scan_complete_notif;
3983 priv->rx_handlers[CARD_STATE_NOTIFICATION] = iwl4965_rx_card_state_notif;
3984 priv->rx_handlers[REPLY_TX] = iwl4965_rx_reply_tx;
3985
3986 /* Set up hardware specific Rx handlers */
3987 iwl4965_hw_rx_handler_setup(priv);
3988 }
3989
3990 /**
3991 * iwl4965_tx_cmd_complete - Pull unused buffers off the queue and reclaim them
3992 * @rxb: Rx buffer to reclaim
3993 *
3994 * If an Rx buffer has an async callback associated with it the callback
3995 * will be executed. The attached skb (if present) will only be freed
3996 * if the callback returns 1
3997 */
3998 static void iwl4965_tx_cmd_complete(struct iwl4965_priv *priv,
3999 struct iwl4965_rx_mem_buffer *rxb)
4000 {
4001 struct iwl4965_rx_packet *pkt = (struct iwl4965_rx_packet *)rxb->skb->data;
4002 u16 sequence = le16_to_cpu(pkt->hdr.sequence);
4003 int txq_id = SEQ_TO_QUEUE(sequence);
4004 int index = SEQ_TO_INDEX(sequence);
4005 int huge = sequence & SEQ_HUGE_FRAME;
4006 int cmd_index;
4007 struct iwl4965_cmd *cmd;
4008
4009 /* If a Tx command is being handled and it isn't in the actual
4010 * command queue then there a command routing bug has been introduced
4011 * in the queue management code. */
4012 if (txq_id != IWL_CMD_QUEUE_NUM)
4013 IWL_ERROR("Error wrong command queue %d command id 0x%X\n",
4014 txq_id, pkt->hdr.cmd);
4015 BUG_ON(txq_id != IWL_CMD_QUEUE_NUM);
4016
4017 cmd_index = get_cmd_index(&priv->txq[IWL_CMD_QUEUE_NUM].q, index, huge);
4018 cmd = &priv->txq[IWL_CMD_QUEUE_NUM].cmd[cmd_index];
4019
4020 /* Input error checking is done when commands are added to queue. */
4021 if (cmd->meta.flags & CMD_WANT_SKB) {
4022 cmd->meta.source->u.skb = rxb->skb;
4023 rxb->skb = NULL;
4024 } else if (cmd->meta.u.callback &&
4025 !cmd->meta.u.callback(priv, cmd, rxb->skb))
4026 rxb->skb = NULL;
4027
4028 iwl4965_tx_queue_reclaim(priv, txq_id, index);
4029
4030 if (!(cmd->meta.flags & CMD_ASYNC)) {
4031 clear_bit(STATUS_HCMD_ACTIVE, &priv->status);
4032 wake_up_interruptible(&priv->wait_command_queue);
4033 }
4034 }
4035
4036 /************************** RX-FUNCTIONS ****************************/
4037 /*
4038 * Rx theory of operation
4039 *
4040 * Driver allocates a circular buffer of Receive Buffer Descriptors (RBDs),
4041 * each of which point to Receive Buffers to be filled by 4965. These get
4042 * used not only for Rx frames, but for any command response or notification
4043 * from the 4965. The driver and 4965 manage the Rx buffers by means
4044 * of indexes into the circular buffer.
4045 *
4046 * Rx Queue Indexes
4047 * The host/firmware share two index registers for managing the Rx buffers.
4048 *
4049 * The READ index maps to the first position that the firmware may be writing
4050 * to -- the driver can read up to (but not including) this position and get
4051 * good data.
4052 * The READ index is managed by the firmware once the card is enabled.
4053 *
4054 * The WRITE index maps to the last position the driver has read from -- the
4055 * position preceding WRITE is the last slot the firmware can place a packet.
4056 *
4057 * The queue is empty (no good data) if WRITE = READ - 1, and is full if
4058 * WRITE = READ.
4059 *
4060 * During initialization, the host sets up the READ queue position to the first
4061 * INDEX position, and WRITE to the last (READ - 1 wrapped)
4062 *
4063 * When the firmware places a packet in a buffer, it will advance the READ index
4064 * and fire the RX interrupt. The driver can then query the READ index and
4065 * process as many packets as possible, moving the WRITE index forward as it
4066 * resets the Rx queue buffers with new memory.
4067 *
4068 * The management in the driver is as follows:
4069 * + A list of pre-allocated SKBs is stored in iwl->rxq->rx_free. When
4070 * iwl->rxq->free_count drops to or below RX_LOW_WATERMARK, work is scheduled
4071 * to replenish the iwl->rxq->rx_free.
4072 * + In iwl4965_rx_replenish (scheduled) if 'processed' != 'read' then the
4073 * iwl->rxq is replenished and the READ INDEX is updated (updating the
4074 * 'processed' and 'read' driver indexes as well)
4075 * + A received packet is processed and handed to the kernel network stack,
4076 * detached from the iwl->rxq. The driver 'processed' index is updated.
4077 * + The Host/Firmware iwl->rxq is replenished at tasklet time from the rx_free
4078 * list. If there are no allocated buffers in iwl->rxq->rx_free, the READ
4079 * INDEX is not incremented and iwl->status(RX_STALLED) is set. If there
4080 * were enough free buffers and RX_STALLED is set it is cleared.
4081 *
4082 *
4083 * Driver sequence:
4084 *
4085 * iwl4965_rx_queue_alloc() Allocates rx_free
4086 * iwl4965_rx_replenish() Replenishes rx_free list from rx_used, and calls
4087 * iwl4965_rx_queue_restock
4088 * iwl4965_rx_queue_restock() Moves available buffers from rx_free into Rx
4089 * queue, updates firmware pointers, and updates
4090 * the WRITE index. If insufficient rx_free buffers
4091 * are available, schedules iwl4965_rx_replenish
4092 *
4093 * -- enable interrupts --
4094 * ISR - iwl4965_rx() Detach iwl4965_rx_mem_buffers from pool up to the
4095 * READ INDEX, detaching the SKB from the pool.
4096 * Moves the packet buffer from queue to rx_used.
4097 * Calls iwl4965_rx_queue_restock to refill any empty
4098 * slots.
4099 * ...
4100 *
4101 */
4102
4103 /**
4104 * iwl4965_rx_queue_space - Return number of free slots available in queue.
4105 */
4106 static int iwl4965_rx_queue_space(const struct iwl4965_rx_queue *q)
4107 {
4108 int s = q->read - q->write;
4109 if (s <= 0)
4110 s += RX_QUEUE_SIZE;
4111 /* keep some buffer to not confuse full and empty queue */
4112 s -= 2;
4113 if (s < 0)
4114 s = 0;
4115 return s;
4116 }
4117
4118 /**
4119 * iwl4965_rx_queue_update_write_ptr - Update the write pointer for the RX queue
4120 */
4121 int iwl4965_rx_queue_update_write_ptr(struct iwl4965_priv *priv, struct iwl4965_rx_queue *q)
4122 {
4123 u32 reg = 0;
4124 int rc = 0;
4125 unsigned long flags;
4126
4127 spin_lock_irqsave(&q->lock, flags);
4128
4129 if (q->need_update == 0)
4130 goto exit_unlock;
4131
4132 /* If power-saving is in use, make sure device is awake */
4133 if (test_bit(STATUS_POWER_PMI, &priv->status)) {
4134 reg = iwl4965_read32(priv, CSR_UCODE_DRV_GP1);
4135
4136 if (reg & CSR_UCODE_DRV_GP1_BIT_MAC_SLEEP) {
4137 iwl4965_set_bit(priv, CSR_GP_CNTRL,
4138 CSR_GP_CNTRL_REG_FLAG_MAC_ACCESS_REQ);
4139 goto exit_unlock;
4140 }
4141
4142 rc = iwl4965_grab_nic_access(priv);
4143 if (rc)
4144 goto exit_unlock;
4145
4146 /* Device expects a multiple of 8 */
4147 iwl4965_write_direct32(priv, FH_RSCSR_CHNL0_WPTR,
4148 q->write & ~0x7);
4149 iwl4965_release_nic_access(priv);
4150
4151 /* Else device is assumed to be awake */
4152 } else
4153 /* Device expects a multiple of 8 */
4154 iwl4965_write32(priv, FH_RSCSR_CHNL0_WPTR, q->write & ~0x7);
4155
4156
4157 q->need_update = 0;
4158
4159 exit_unlock:
4160 spin_unlock_irqrestore(&q->lock, flags);
4161 return rc;
4162 }
4163
4164 /**
4165 * iwl4965_dma_addr2rbd_ptr - convert a DMA address to a uCode read buffer ptr
4166 */
4167 static inline __le32 iwl4965_dma_addr2rbd_ptr(struct iwl4965_priv *priv,
4168 dma_addr_t dma_addr)
4169 {
4170 return cpu_to_le32((u32)(dma_addr >> 8));
4171 }
4172
4173
4174 /**
4175 * iwl4965_rx_queue_restock - refill RX queue from pre-allocated pool
4176 *
4177 * If there are slots in the RX queue that need to be restocked,
4178 * and we have free pre-allocated buffers, fill the ranks as much
4179 * as we can, pulling from rx_free.
4180 *
4181 * This moves the 'write' index forward to catch up with 'processed', and
4182 * also updates the memory address in the firmware to reference the new
4183 * target buffer.
4184 */
4185 static int iwl4965_rx_queue_restock(struct iwl4965_priv *priv)
4186 {
4187 struct iwl4965_rx_queue *rxq = &priv->rxq;
4188 struct list_head *element;
4189 struct iwl4965_rx_mem_buffer *rxb;
4190 unsigned long flags;
4191 int write, rc;
4192
4193 spin_lock_irqsave(&rxq->lock, flags);
4194 write = rxq->write & ~0x7;
4195 while ((iwl4965_rx_queue_space(rxq) > 0) && (rxq->free_count)) {
4196 /* Get next free Rx buffer, remove from free list */
4197 element = rxq->rx_free.next;
4198 rxb = list_entry(element, struct iwl4965_rx_mem_buffer, list);
4199 list_del(element);
4200
4201 /* Point to Rx buffer via next RBD in circular buffer */
4202 rxq->bd[rxq->write] = iwl4965_dma_addr2rbd_ptr(priv, rxb->dma_addr);
4203 rxq->queue[rxq->write] = rxb;
4204 rxq->write = (rxq->write + 1) & RX_QUEUE_MASK;
4205 rxq->free_count--;
4206 }
4207 spin_unlock_irqrestore(&rxq->lock, flags);
4208 /* If the pre-allocated buffer pool is dropping low, schedule to
4209 * refill it */
4210 if (rxq->free_count <= RX_LOW_WATERMARK)
4211 queue_work(priv->workqueue, &priv->rx_replenish);
4212
4213
4214 /* If we've added more space for the firmware to place data, tell it.
4215 * Increment device's write pointer in multiples of 8. */
4216 if ((write != (rxq->write & ~0x7))
4217 || (abs(rxq->write - rxq->read) > 7)) {
4218 spin_lock_irqsave(&rxq->lock, flags);
4219 rxq->need_update = 1;
4220 spin_unlock_irqrestore(&rxq->lock, flags);
4221 rc = iwl4965_rx_queue_update_write_ptr(priv, rxq);
4222 if (rc)
4223 return rc;
4224 }
4225
4226 return 0;
4227 }
4228
4229 /**
4230 * iwl4965_rx_replenish - Move all used packet from rx_used to rx_free
4231 *
4232 * When moving to rx_free an SKB is allocated for the slot.
4233 *
4234 * Also restock the Rx queue via iwl4965_rx_queue_restock.
4235 * This is called as a scheduled work item (except for during initialization)
4236 */
4237 static void iwl4965_rx_allocate(struct iwl4965_priv *priv)
4238 {
4239 struct iwl4965_rx_queue *rxq = &priv->rxq;
4240 struct list_head *element;
4241 struct iwl4965_rx_mem_buffer *rxb;
4242 unsigned long flags;
4243 spin_lock_irqsave(&rxq->lock, flags);
4244 while (!list_empty(&rxq->rx_used)) {
4245 element = rxq->rx_used.next;
4246 rxb = list_entry(element, struct iwl4965_rx_mem_buffer, list);
4247
4248 /* Alloc a new receive buffer */
4249 rxb->skb =
4250 alloc_skb(priv->hw_setting.rx_buf_size,
4251 __GFP_NOWARN | GFP_ATOMIC);
4252 if (!rxb->skb) {
4253 if (net_ratelimit())
4254 printk(KERN_CRIT DRV_NAME
4255 ": Can not allocate SKB buffers\n");
4256 /* We don't reschedule replenish work here -- we will
4257 * call the restock method and if it still needs
4258 * more buffers it will schedule replenish */
4259 break;
4260 }
4261 priv->alloc_rxb_skb++;
4262 list_del(element);
4263
4264 /* Get physical address of RB/SKB */
4265 rxb->dma_addr =
4266 pci_map_single(priv->pci_dev, rxb->skb->data,
4267 priv->hw_setting.rx_buf_size, PCI_DMA_FROMDEVICE);
4268 list_add_tail(&rxb->list, &rxq->rx_free);
4269 rxq->free_count++;
4270 }
4271 spin_unlock_irqrestore(&rxq->lock, flags);
4272 }
4273
4274 /*
4275 * this should be called while priv->lock is locked
4276 */
4277 static void __iwl4965_rx_replenish(void *data)
4278 {
4279 struct iwl4965_priv *priv = data;
4280
4281 iwl4965_rx_allocate(priv);
4282 iwl4965_rx_queue_restock(priv);
4283 }
4284
4285
4286 void iwl4965_rx_replenish(void *data)
4287 {
4288 struct iwl4965_priv *priv = data;
4289 unsigned long flags;
4290
4291 iwl4965_rx_allocate(priv);
4292
4293 spin_lock_irqsave(&priv->lock, flags);
4294 iwl4965_rx_queue_restock(priv);
4295 spin_unlock_irqrestore(&priv->lock, flags);
4296 }
4297
4298 /* Assumes that the skb field of the buffers in 'pool' is kept accurate.
4299 * If an SKB has been detached, the POOL needs to have its SKB set to NULL
4300 * This free routine walks the list of POOL entries and if SKB is set to
4301 * non NULL it is unmapped and freed
4302 */
4303 static void iwl4965_rx_queue_free(struct iwl4965_priv *priv, struct iwl4965_rx_queue *rxq)
4304 {
4305 int i;
4306 for (i = 0; i < RX_QUEUE_SIZE + RX_FREE_BUFFERS; i++) {
4307 if (rxq->pool[i].skb != NULL) {
4308 pci_unmap_single(priv->pci_dev,
4309 rxq->pool[i].dma_addr,
4310 priv->hw_setting.rx_buf_size,
4311 PCI_DMA_FROMDEVICE);
4312 dev_kfree_skb(rxq->pool[i].skb);
4313 }
4314 }
4315
4316 pci_free_consistent(priv->pci_dev, 4 * RX_QUEUE_SIZE, rxq->bd,
4317 rxq->dma_addr);
4318 rxq->bd = NULL;
4319 }
4320
4321 int iwl4965_rx_queue_alloc(struct iwl4965_priv *priv)
4322 {
4323 struct iwl4965_rx_queue *rxq = &priv->rxq;
4324 struct pci_dev *dev = priv->pci_dev;
4325 int i;
4326
4327 spin_lock_init(&rxq->lock);
4328 INIT_LIST_HEAD(&rxq->rx_free);
4329 INIT_LIST_HEAD(&rxq->rx_used);
4330
4331 /* Alloc the circular buffer of Read Buffer Descriptors (RBDs) */
4332 rxq->bd = pci_alloc_consistent(dev, 4 * RX_QUEUE_SIZE, &rxq->dma_addr);
4333 if (!rxq->bd)
4334 return -ENOMEM;
4335
4336 /* Fill the rx_used queue with _all_ of the Rx buffers */
4337 for (i = 0; i < RX_FREE_BUFFERS + RX_QUEUE_SIZE; i++)
4338 list_add_tail(&rxq->pool[i].list, &rxq->rx_used);
4339
4340 /* Set us so that we have processed and used all buffers, but have
4341 * not restocked the Rx queue with fresh buffers */
4342 rxq->read = rxq->write = 0;
4343 rxq->free_count = 0;
4344 rxq->need_update = 0;
4345 return 0;
4346 }
4347
4348 void iwl4965_rx_queue_reset(struct iwl4965_priv *priv, struct iwl4965_rx_queue *rxq)
4349 {
4350 unsigned long flags;
4351 int i;
4352 spin_lock_irqsave(&rxq->lock, flags);
4353 INIT_LIST_HEAD(&rxq->rx_free);
4354 INIT_LIST_HEAD(&rxq->rx_used);
4355 /* Fill the rx_used queue with _all_ of the Rx buffers */
4356 for (i = 0; i < RX_FREE_BUFFERS + RX_QUEUE_SIZE; i++) {
4357 /* In the reset function, these buffers may have been allocated
4358 * to an SKB, so we need to unmap and free potential storage */
4359 if (rxq->pool[i].skb != NULL) {
4360 pci_unmap_single(priv->pci_dev,
4361 rxq->pool[i].dma_addr,
4362 priv->hw_setting.rx_buf_size,
4363 PCI_DMA_FROMDEVICE);
4364 priv->alloc_rxb_skb--;
4365 dev_kfree_skb(rxq->pool[i].skb);
4366 rxq->pool[i].skb = NULL;
4367 }
4368 list_add_tail(&rxq->pool[i].list, &rxq->rx_used);
4369 }
4370
4371 /* Set us so that we have processed and used all buffers, but have
4372 * not restocked the Rx queue with fresh buffers */
4373 rxq->read = rxq->write = 0;
4374 rxq->free_count = 0;
4375 spin_unlock_irqrestore(&rxq->lock, flags);
4376 }
4377
4378 /* Convert linear signal-to-noise ratio into dB */
4379 static u8 ratio2dB[100] = {
4380 /* 0 1 2 3 4 5 6 7 8 9 */
4381 0, 0, 6, 10, 12, 14, 16, 17, 18, 19, /* 00 - 09 */
4382 20, 21, 22, 22, 23, 23, 24, 25, 26, 26, /* 10 - 19 */
4383 26, 26, 26, 27, 27, 28, 28, 28, 29, 29, /* 20 - 29 */
4384 29, 30, 30, 30, 31, 31, 31, 31, 32, 32, /* 30 - 39 */
4385 32, 32, 32, 33, 33, 33, 33, 33, 34, 34, /* 40 - 49 */
4386 34, 34, 34, 34, 35, 35, 35, 35, 35, 35, /* 50 - 59 */
4387 36, 36, 36, 36, 36, 36, 36, 37, 37, 37, /* 60 - 69 */
4388 37, 37, 37, 37, 37, 38, 38, 38, 38, 38, /* 70 - 79 */
4389 38, 38, 38, 38, 38, 39, 39, 39, 39, 39, /* 80 - 89 */
4390 39, 39, 39, 39, 39, 40, 40, 40, 40, 40 /* 90 - 99 */
4391 };
4392
4393 /* Calculates a relative dB value from a ratio of linear
4394 * (i.e. not dB) signal levels.
4395 * Conversion assumes that levels are voltages (20*log), not powers (10*log). */
4396 int iwl4965_calc_db_from_ratio(int sig_ratio)
4397 {
4398 /* 1000:1 or higher just report as 60 dB */
4399 if (sig_ratio >= 1000)
4400 return 60;
4401
4402 /* 100:1 or higher, divide by 10 and use table,
4403 * add 20 dB to make up for divide by 10 */
4404 if (sig_ratio >= 100)
4405 return (20 + (int)ratio2dB[sig_ratio/10]);
4406
4407 /* We shouldn't see this */
4408 if (sig_ratio < 1)
4409 return 0;
4410
4411 /* Use table for ratios 1:1 - 99:1 */
4412 return (int)ratio2dB[sig_ratio];
4413 }
4414
4415 #define PERFECT_RSSI (-20) /* dBm */
4416 #define WORST_RSSI (-95) /* dBm */
4417 #define RSSI_RANGE (PERFECT_RSSI - WORST_RSSI)
4418
4419 /* Calculate an indication of rx signal quality (a percentage, not dBm!).
4420 * See http://www.ces.clemson.edu/linux/signal_quality.shtml for info
4421 * about formulas used below. */
4422 int iwl4965_calc_sig_qual(int rssi_dbm, int noise_dbm)
4423 {
4424 int sig_qual;
4425 int degradation = PERFECT_RSSI - rssi_dbm;
4426
4427 /* If we get a noise measurement, use signal-to-noise ratio (SNR)
4428 * as indicator; formula is (signal dbm - noise dbm).
4429 * SNR at or above 40 is a great signal (100%).
4430 * Below that, scale to fit SNR of 0 - 40 dB within 0 - 100% indicator.
4431 * Weakest usable signal is usually 10 - 15 dB SNR. */
4432 if (noise_dbm) {
4433 if (rssi_dbm - noise_dbm >= 40)
4434 return 100;
4435 else if (rssi_dbm < noise_dbm)
4436 return 0;
4437 sig_qual = ((rssi_dbm - noise_dbm) * 5) / 2;
4438
4439 /* Else use just the signal level.
4440 * This formula is a least squares fit of data points collected and
4441 * compared with a reference system that had a percentage (%) display
4442 * for signal quality. */
4443 } else
4444 sig_qual = (100 * (RSSI_RANGE * RSSI_RANGE) - degradation *
4445 (15 * RSSI_RANGE + 62 * degradation)) /
4446 (RSSI_RANGE * RSSI_RANGE);
4447
4448 if (sig_qual > 100)
4449 sig_qual = 100;
4450 else if (sig_qual < 1)
4451 sig_qual = 0;
4452
4453 return sig_qual;
4454 }
4455
4456 /**
4457 * iwl4965_rx_handle - Main entry function for receiving responses from uCode
4458 *
4459 * Uses the priv->rx_handlers callback function array to invoke
4460 * the appropriate handlers, including command responses,
4461 * frame-received notifications, and other notifications.
4462 */
4463 static void iwl4965_rx_handle(struct iwl4965_priv *priv)
4464 {
4465 struct iwl4965_rx_mem_buffer *rxb;
4466 struct iwl4965_rx_packet *pkt;
4467 struct iwl4965_rx_queue *rxq = &priv->rxq;
4468 u32 r, i;
4469 int reclaim;
4470 unsigned long flags;
4471 u8 fill_rx = 0;
4472 u32 count = 8;
4473
4474 /* uCode's read index (stored in shared DRAM) indicates the last Rx
4475 * buffer that the driver may process (last buffer filled by ucode). */
4476 r = iwl4965_hw_get_rx_read(priv);
4477 i = rxq->read;
4478
4479 /* Rx interrupt, but nothing sent from uCode */
4480 if (i == r)
4481 IWL_DEBUG(IWL_DL_RX | IWL_DL_ISR, "r = %d, i = %d\n", r, i);
4482
4483 if (iwl4965_rx_queue_space(rxq) > (RX_QUEUE_SIZE / 2))
4484 fill_rx = 1;
4485
4486 while (i != r) {
4487 rxb = rxq->queue[i];
4488
4489 /* If an RXB doesn't have a Rx queue slot associated with it,
4490 * then a bug has been introduced in the queue refilling
4491 * routines -- catch it here */
4492 BUG_ON(rxb == NULL);
4493
4494 rxq->queue[i] = NULL;
4495
4496 pci_dma_sync_single_for_cpu(priv->pci_dev, rxb->dma_addr,
4497 priv->hw_setting.rx_buf_size,
4498 PCI_DMA_FROMDEVICE);
4499 pkt = (struct iwl4965_rx_packet *)rxb->skb->data;
4500
4501 /* Reclaim a command buffer only if this packet is a response
4502 * to a (driver-originated) command.
4503 * If the packet (e.g. Rx frame) originated from uCode,
4504 * there is no command buffer to reclaim.
4505 * Ucode should set SEQ_RX_FRAME bit if ucode-originated,
4506 * but apparently a few don't get set; catch them here. */
4507 reclaim = !(pkt->hdr.sequence & SEQ_RX_FRAME) &&
4508 (pkt->hdr.cmd != REPLY_RX_PHY_CMD) &&
4509 (pkt->hdr.cmd != REPLY_4965_RX) &&
4510 (pkt->hdr.cmd != REPLY_COMPRESSED_BA) &&
4511 (pkt->hdr.cmd != STATISTICS_NOTIFICATION) &&
4512 (pkt->hdr.cmd != REPLY_TX);
4513
4514 /* Based on type of command response or notification,
4515 * handle those that need handling via function in
4516 * rx_handlers table. See iwl4965_setup_rx_handlers() */
4517 if (priv->rx_handlers[pkt->hdr.cmd]) {
4518 IWL_DEBUG(IWL_DL_HOST_COMMAND | IWL_DL_RX | IWL_DL_ISR,
4519 "r = %d, i = %d, %s, 0x%02x\n", r, i,
4520 get_cmd_string(pkt->hdr.cmd), pkt->hdr.cmd);
4521 priv->rx_handlers[pkt->hdr.cmd] (priv, rxb);
4522 } else {
4523 /* No handling needed */
4524 IWL_DEBUG(IWL_DL_HOST_COMMAND | IWL_DL_RX | IWL_DL_ISR,
4525 "r %d i %d No handler needed for %s, 0x%02x\n",
4526 r, i, get_cmd_string(pkt->hdr.cmd),
4527 pkt->hdr.cmd);
4528 }
4529
4530 if (reclaim) {
4531 /* Invoke any callbacks, transfer the skb to caller, and
4532 * fire off the (possibly) blocking iwl4965_send_cmd()
4533 * as we reclaim the driver command queue */
4534 if (rxb && rxb->skb)
4535 iwl4965_tx_cmd_complete(priv, rxb);
4536 else
4537 IWL_WARNING("Claim null rxb?\n");
4538 }
4539
4540 /* For now we just don't re-use anything. We can tweak this
4541 * later to try and re-use notification packets and SKBs that
4542 * fail to Rx correctly */
4543 if (rxb->skb != NULL) {
4544 priv->alloc_rxb_skb--;
4545 dev_kfree_skb_any(rxb->skb);
4546 rxb->skb = NULL;
4547 }
4548
4549 pci_unmap_single(priv->pci_dev, rxb->dma_addr,
4550 priv->hw_setting.rx_buf_size,
4551 PCI_DMA_FROMDEVICE);
4552 spin_lock_irqsave(&rxq->lock, flags);
4553 list_add_tail(&rxb->list, &priv->rxq.rx_used);
4554 spin_unlock_irqrestore(&rxq->lock, flags);
4555 i = (i + 1) & RX_QUEUE_MASK;
4556 /* If there are a lot of unused frames,
4557 * restock the Rx queue so ucode wont assert. */
4558 if (fill_rx) {
4559 count++;
4560 if (count >= 8) {
4561 priv->rxq.read = i;
4562 __iwl4965_rx_replenish(priv);
4563 count = 0;
4564 }
4565 }
4566 }
4567
4568 /* Backtrack one entry */
4569 priv->rxq.read = i;
4570 iwl4965_rx_queue_restock(priv);
4571 }
4572
4573 /**
4574 * iwl4965_tx_queue_update_write_ptr - Send new write index to hardware
4575 */
4576 static int iwl4965_tx_queue_update_write_ptr(struct iwl4965_priv *priv,
4577 struct iwl4965_tx_queue *txq)
4578 {
4579 u32 reg = 0;
4580 int rc = 0;
4581 int txq_id = txq->q.id;
4582
4583 if (txq->need_update == 0)
4584 return rc;
4585
4586 /* if we're trying to save power */
4587 if (test_bit(STATUS_POWER_PMI, &priv->status)) {
4588 /* wake up nic if it's powered down ...
4589 * uCode will wake up, and interrupt us again, so next
4590 * time we'll skip this part. */
4591 reg = iwl4965_read32(priv, CSR_UCODE_DRV_GP1);
4592
4593 if (reg & CSR_UCODE_DRV_GP1_BIT_MAC_SLEEP) {
4594 IWL_DEBUG_INFO("Requesting wakeup, GP1 = 0x%x\n", reg);
4595 iwl4965_set_bit(priv, CSR_GP_CNTRL,
4596 CSR_GP_CNTRL_REG_FLAG_MAC_ACCESS_REQ);
4597 return rc;
4598 }
4599
4600 /* restore this queue's parameters in nic hardware. */
4601 rc = iwl4965_grab_nic_access(priv);
4602 if (rc)
4603 return rc;
4604 iwl4965_write_direct32(priv, HBUS_TARG_WRPTR,
4605 txq->q.write_ptr | (txq_id << 8));
4606 iwl4965_release_nic_access(priv);
4607
4608 /* else not in power-save mode, uCode will never sleep when we're
4609 * trying to tx (during RFKILL, we're not trying to tx). */
4610 } else
4611 iwl4965_write32(priv, HBUS_TARG_WRPTR,
4612 txq->q.write_ptr | (txq_id << 8));
4613
4614 txq->need_update = 0;
4615
4616 return rc;
4617 }
4618
4619 #ifdef CONFIG_IWL4965_DEBUG
4620 static void iwl4965_print_rx_config_cmd(struct iwl4965_rxon_cmd *rxon)
4621 {
4622 DECLARE_MAC_BUF(mac);
4623
4624 IWL_DEBUG_RADIO("RX CONFIG:\n");
4625 iwl4965_print_hex_dump(IWL_DL_RADIO, (u8 *) rxon, sizeof(*rxon));
4626 IWL_DEBUG_RADIO("u16 channel: 0x%x\n", le16_to_cpu(rxon->channel));
4627 IWL_DEBUG_RADIO("u32 flags: 0x%08X\n", le32_to_cpu(rxon->flags));
4628 IWL_DEBUG_RADIO("u32 filter_flags: 0x%08x\n",
4629 le32_to_cpu(rxon->filter_flags));
4630 IWL_DEBUG_RADIO("u8 dev_type: 0x%x\n", rxon->dev_type);
4631 IWL_DEBUG_RADIO("u8 ofdm_basic_rates: 0x%02x\n",
4632 rxon->ofdm_basic_rates);
4633 IWL_DEBUG_RADIO("u8 cck_basic_rates: 0x%02x\n", rxon->cck_basic_rates);
4634 IWL_DEBUG_RADIO("u8[6] node_addr: %s\n",
4635 print_mac(mac, rxon->node_addr));
4636 IWL_DEBUG_RADIO("u8[6] bssid_addr: %s\n",
4637 print_mac(mac, rxon->bssid_addr));
4638 IWL_DEBUG_RADIO("u16 assoc_id: 0x%x\n", le16_to_cpu(rxon->assoc_id));
4639 }
4640 #endif
4641
4642 static void iwl4965_enable_interrupts(struct iwl4965_priv *priv)
4643 {
4644 IWL_DEBUG_ISR("Enabling interrupts\n");
4645 set_bit(STATUS_INT_ENABLED, &priv->status);
4646 iwl4965_write32(priv, CSR_INT_MASK, CSR_INI_SET_MASK);
4647 }
4648
4649 static inline void iwl4965_disable_interrupts(struct iwl4965_priv *priv)
4650 {
4651 clear_bit(STATUS_INT_ENABLED, &priv->status);
4652
4653 /* disable interrupts from uCode/NIC to host */
4654 iwl4965_write32(priv, CSR_INT_MASK, 0x00000000);
4655
4656 /* acknowledge/clear/reset any interrupts still pending
4657 * from uCode or flow handler (Rx/Tx DMA) */
4658 iwl4965_write32(priv, CSR_INT, 0xffffffff);
4659 iwl4965_write32(priv, CSR_FH_INT_STATUS, 0xffffffff);
4660 IWL_DEBUG_ISR("Disabled interrupts\n");
4661 }
4662
4663 static const char *desc_lookup(int i)
4664 {
4665 switch (i) {
4666 case 1:
4667 return "FAIL";
4668 case 2:
4669 return "BAD_PARAM";
4670 case 3:
4671 return "BAD_CHECKSUM";
4672 case 4:
4673 return "NMI_INTERRUPT";
4674 case 5:
4675 return "SYSASSERT";
4676 case 6:
4677 return "FATAL_ERROR";
4678 }
4679
4680 return "UNKNOWN";
4681 }
4682
4683 #define ERROR_START_OFFSET (1 * sizeof(u32))
4684 #define ERROR_ELEM_SIZE (7 * sizeof(u32))
4685
4686 static void iwl4965_dump_nic_error_log(struct iwl4965_priv *priv)
4687 {
4688 u32 data2, line;
4689 u32 desc, time, count, base, data1;
4690 u32 blink1, blink2, ilink1, ilink2;
4691 int rc;
4692
4693 base = le32_to_cpu(priv->card_alive.error_event_table_ptr);
4694
4695 if (!iwl4965_hw_valid_rtc_data_addr(base)) {
4696 IWL_ERROR("Not valid error log pointer 0x%08X\n", base);
4697 return;
4698 }
4699
4700 rc = iwl4965_grab_nic_access(priv);
4701 if (rc) {
4702 IWL_WARNING("Can not read from adapter at this time.\n");
4703 return;
4704 }
4705
4706 count = iwl4965_read_targ_mem(priv, base);
4707
4708 if (ERROR_START_OFFSET <= count * ERROR_ELEM_SIZE) {
4709 IWL_ERROR("Start IWL Error Log Dump:\n");
4710 IWL_ERROR("Status: 0x%08lX, count: %d\n", priv->status, count);
4711 }
4712
4713 desc = iwl4965_read_targ_mem(priv, base + 1 * sizeof(u32));
4714 blink1 = iwl4965_read_targ_mem(priv, base + 3 * sizeof(u32));
4715 blink2 = iwl4965_read_targ_mem(priv, base + 4 * sizeof(u32));
4716 ilink1 = iwl4965_read_targ_mem(priv, base + 5 * sizeof(u32));
4717 ilink2 = iwl4965_read_targ_mem(priv, base + 6 * sizeof(u32));
4718 data1 = iwl4965_read_targ_mem(priv, base + 7 * sizeof(u32));
4719 data2 = iwl4965_read_targ_mem(priv, base + 8 * sizeof(u32));
4720 line = iwl4965_read_targ_mem(priv, base + 9 * sizeof(u32));
4721 time = iwl4965_read_targ_mem(priv, base + 11 * sizeof(u32));
4722
4723 IWL_ERROR("Desc Time "
4724 "data1 data2 line\n");
4725 IWL_ERROR("%-13s (#%d) %010u 0x%08X 0x%08X %u\n",
4726 desc_lookup(desc), desc, time, data1, data2, line);
4727 IWL_ERROR("blink1 blink2 ilink1 ilink2\n");
4728 IWL_ERROR("0x%05X 0x%05X 0x%05X 0x%05X\n", blink1, blink2,
4729 ilink1, ilink2);
4730
4731 iwl4965_release_nic_access(priv);
4732 }
4733
4734 #define EVENT_START_OFFSET (4 * sizeof(u32))
4735
4736 /**
4737 * iwl4965_print_event_log - Dump error event log to syslog
4738 *
4739 * NOTE: Must be called with iwl4965_grab_nic_access() already obtained!
4740 */
4741 static void iwl4965_print_event_log(struct iwl4965_priv *priv, u32 start_idx,
4742 u32 num_events, u32 mode)
4743 {
4744 u32 i;
4745 u32 base; /* SRAM byte address of event log header */
4746 u32 event_size; /* 2 u32s, or 3 u32s if timestamp recorded */
4747 u32 ptr; /* SRAM byte address of log data */
4748 u32 ev, time, data; /* event log data */
4749
4750 if (num_events == 0)
4751 return;
4752
4753 base = le32_to_cpu(priv->card_alive.log_event_table_ptr);
4754
4755 if (mode == 0)
4756 event_size = 2 * sizeof(u32);
4757 else
4758 event_size = 3 * sizeof(u32);
4759
4760 ptr = base + EVENT_START_OFFSET + (start_idx * event_size);
4761
4762 /* "time" is actually "data" for mode 0 (no timestamp).
4763 * place event id # at far right for easier visual parsing. */
4764 for (i = 0; i < num_events; i++) {
4765 ev = iwl4965_read_targ_mem(priv, ptr);
4766 ptr += sizeof(u32);
4767 time = iwl4965_read_targ_mem(priv, ptr);
4768 ptr += sizeof(u32);
4769 if (mode == 0)
4770 IWL_ERROR("0x%08x\t%04u\n", time, ev); /* data, ev */
4771 else {
4772 data = iwl4965_read_targ_mem(priv, ptr);
4773 ptr += sizeof(u32);
4774 IWL_ERROR("%010u\t0x%08x\t%04u\n", time, data, ev);
4775 }
4776 }
4777 }
4778
4779 static void iwl4965_dump_nic_event_log(struct iwl4965_priv *priv)
4780 {
4781 int rc;
4782 u32 base; /* SRAM byte address of event log header */
4783 u32 capacity; /* event log capacity in # entries */
4784 u32 mode; /* 0 - no timestamp, 1 - timestamp recorded */
4785 u32 num_wraps; /* # times uCode wrapped to top of log */
4786 u32 next_entry; /* index of next entry to be written by uCode */
4787 u32 size; /* # entries that we'll print */
4788
4789 base = le32_to_cpu(priv->card_alive.log_event_table_ptr);
4790 if (!iwl4965_hw_valid_rtc_data_addr(base)) {
4791 IWL_ERROR("Invalid event log pointer 0x%08X\n", base);
4792 return;
4793 }
4794
4795 rc = iwl4965_grab_nic_access(priv);
4796 if (rc) {
4797 IWL_WARNING("Can not read from adapter at this time.\n");
4798 return;
4799 }
4800
4801 /* event log header */
4802 capacity = iwl4965_read_targ_mem(priv, base);
4803 mode = iwl4965_read_targ_mem(priv, base + (1 * sizeof(u32)));
4804 num_wraps = iwl4965_read_targ_mem(priv, base + (2 * sizeof(u32)));
4805 next_entry = iwl4965_read_targ_mem(priv, base + (3 * sizeof(u32)));
4806
4807 size = num_wraps ? capacity : next_entry;
4808
4809 /* bail out if nothing in log */
4810 if (size == 0) {
4811 IWL_ERROR("Start IWL Event Log Dump: nothing in log\n");
4812 iwl4965_release_nic_access(priv);
4813 return;
4814 }
4815
4816 IWL_ERROR("Start IWL Event Log Dump: display count %d, wraps %d\n",
4817 size, num_wraps);
4818
4819 /* if uCode has wrapped back to top of log, start at the oldest entry,
4820 * i.e the next one that uCode would fill. */
4821 if (num_wraps)
4822 iwl4965_print_event_log(priv, next_entry,
4823 capacity - next_entry, mode);
4824
4825 /* (then/else) start at top of log */
4826 iwl4965_print_event_log(priv, 0, next_entry, mode);
4827
4828 iwl4965_release_nic_access(priv);
4829 }
4830
4831 /**
4832 * iwl4965_irq_handle_error - called for HW or SW error interrupt from card
4833 */
4834 static void iwl4965_irq_handle_error(struct iwl4965_priv *priv)
4835 {
4836 /* Set the FW error flag -- cleared on iwl4965_down */
4837 set_bit(STATUS_FW_ERROR, &priv->status);
4838
4839 /* Cancel currently queued command. */
4840 clear_bit(STATUS_HCMD_ACTIVE, &priv->status);
4841
4842 #ifdef CONFIG_IWL4965_DEBUG
4843 if (iwl4965_debug_level & IWL_DL_FW_ERRORS) {
4844 iwl4965_dump_nic_error_log(priv);
4845 iwl4965_dump_nic_event_log(priv);
4846 iwl4965_print_rx_config_cmd(&priv->staging_rxon);
4847 }
4848 #endif
4849
4850 wake_up_interruptible(&priv->wait_command_queue);
4851
4852 /* Keep the restart process from trying to send host
4853 * commands by clearing the INIT status bit */
4854 clear_bit(STATUS_READY, &priv->status);
4855
4856 if (!test_bit(STATUS_EXIT_PENDING, &priv->status)) {
4857 IWL_DEBUG(IWL_DL_INFO | IWL_DL_FW_ERRORS,
4858 "Restarting adapter due to uCode error.\n");
4859
4860 if (iwl4965_is_associated(priv)) {
4861 memcpy(&priv->recovery_rxon, &priv->active_rxon,
4862 sizeof(priv->recovery_rxon));
4863 priv->error_recovering = 1;
4864 }
4865 queue_work(priv->workqueue, &priv->restart);
4866 }
4867 }
4868
4869 static void iwl4965_error_recovery(struct iwl4965_priv *priv)
4870 {
4871 unsigned long flags;
4872
4873 memcpy(&priv->staging_rxon, &priv->recovery_rxon,
4874 sizeof(priv->staging_rxon));
4875 priv->staging_rxon.filter_flags &= ~RXON_FILTER_ASSOC_MSK;
4876 iwl4965_commit_rxon(priv);
4877
4878 iwl4965_rxon_add_station(priv, priv->bssid, 1);
4879
4880 spin_lock_irqsave(&priv->lock, flags);
4881 priv->assoc_id = le16_to_cpu(priv->staging_rxon.assoc_id);
4882 priv->error_recovering = 0;
4883 spin_unlock_irqrestore(&priv->lock, flags);
4884 }
4885
4886 static void iwl4965_irq_tasklet(struct iwl4965_priv *priv)
4887 {
4888 u32 inta, handled = 0;
4889 u32 inta_fh;
4890 unsigned long flags;
4891 #ifdef CONFIG_IWL4965_DEBUG
4892 u32 inta_mask;
4893 #endif
4894
4895 spin_lock_irqsave(&priv->lock, flags);
4896
4897 /* Ack/clear/reset pending uCode interrupts.
4898 * Note: Some bits in CSR_INT are "OR" of bits in CSR_FH_INT_STATUS,
4899 * and will clear only when CSR_FH_INT_STATUS gets cleared. */
4900 inta = iwl4965_read32(priv, CSR_INT);
4901 iwl4965_write32(priv, CSR_INT, inta);
4902
4903 /* Ack/clear/reset pending flow-handler (DMA) interrupts.
4904 * Any new interrupts that happen after this, either while we're
4905 * in this tasklet, or later, will show up in next ISR/tasklet. */
4906 inta_fh = iwl4965_read32(priv, CSR_FH_INT_STATUS);
4907 iwl4965_write32(priv, CSR_FH_INT_STATUS, inta_fh);
4908
4909 #ifdef CONFIG_IWL4965_DEBUG
4910 if (iwl4965_debug_level & IWL_DL_ISR) {
4911 /* just for debug */
4912 inta_mask = iwl4965_read32(priv, CSR_INT_MASK);
4913 IWL_DEBUG_ISR("inta 0x%08x, enabled 0x%08x, fh 0x%08x\n",
4914 inta, inta_mask, inta_fh);
4915 }
4916 #endif
4917
4918 /* Since CSR_INT and CSR_FH_INT_STATUS reads and clears are not
4919 * atomic, make sure that inta covers all the interrupts that
4920 * we've discovered, even if FH interrupt came in just after
4921 * reading CSR_INT. */
4922 if (inta_fh & CSR49_FH_INT_RX_MASK)
4923 inta |= CSR_INT_BIT_FH_RX;
4924 if (inta_fh & CSR49_FH_INT_TX_MASK)
4925 inta |= CSR_INT_BIT_FH_TX;
4926
4927 /* Now service all interrupt bits discovered above. */
4928 if (inta & CSR_INT_BIT_HW_ERR) {
4929 IWL_ERROR("Microcode HW error detected. Restarting.\n");
4930
4931 /* Tell the device to stop sending interrupts */
4932 iwl4965_disable_interrupts(priv);
4933
4934 iwl4965_irq_handle_error(priv);
4935
4936 handled |= CSR_INT_BIT_HW_ERR;
4937
4938 spin_unlock_irqrestore(&priv->lock, flags);
4939
4940 return;
4941 }
4942
4943 #ifdef CONFIG_IWL4965_DEBUG
4944 if (iwl4965_debug_level & (IWL_DL_ISR)) {
4945 /* NIC fires this, but we don't use it, redundant with WAKEUP */
4946 if (inta & CSR_INT_BIT_SCD)
4947 IWL_DEBUG_ISR("Scheduler finished to transmit "
4948 "the frame/frames.\n");
4949
4950 /* Alive notification via Rx interrupt will do the real work */
4951 if (inta & CSR_INT_BIT_ALIVE)
4952 IWL_DEBUG_ISR("Alive interrupt\n");
4953 }
4954 #endif
4955 /* Safely ignore these bits for debug checks below */
4956 inta &= ~(CSR_INT_BIT_SCD | CSR_INT_BIT_ALIVE);
4957
4958 /* HW RF KILL switch toggled */
4959 if (inta & CSR_INT_BIT_RF_KILL) {
4960 int hw_rf_kill = 0;
4961 if (!(iwl4965_read32(priv, CSR_GP_CNTRL) &
4962 CSR_GP_CNTRL_REG_FLAG_HW_RF_KILL_SW))
4963 hw_rf_kill = 1;
4964
4965 IWL_DEBUG(IWL_DL_INFO | IWL_DL_RF_KILL | IWL_DL_ISR,
4966 "RF_KILL bit toggled to %s.\n",
4967 hw_rf_kill ? "disable radio":"enable radio");
4968
4969 /* Queue restart only if RF_KILL switch was set to "kill"
4970 * when we loaded driver, and is now set to "enable".
4971 * After we're Alive, RF_KILL gets handled by
4972 * iwl4965_rx_card_state_notif() */
4973 if (!hw_rf_kill && !test_bit(STATUS_ALIVE, &priv->status)) {
4974 clear_bit(STATUS_RF_KILL_HW, &priv->status);
4975 queue_work(priv->workqueue, &priv->restart);
4976 }
4977
4978 handled |= CSR_INT_BIT_RF_KILL;
4979 }
4980
4981 /* Chip got too hot and stopped itself */
4982 if (inta & CSR_INT_BIT_CT_KILL) {
4983 IWL_ERROR("Microcode CT kill error detected.\n");
4984 handled |= CSR_INT_BIT_CT_KILL;
4985 }
4986
4987 /* Error detected by uCode */
4988 if (inta & CSR_INT_BIT_SW_ERR) {
4989 IWL_ERROR("Microcode SW error detected. Restarting 0x%X.\n",
4990 inta);
4991 iwl4965_irq_handle_error(priv);
4992 handled |= CSR_INT_BIT_SW_ERR;
4993 }
4994
4995 /* uCode wakes up after power-down sleep */
4996 if (inta & CSR_INT_BIT_WAKEUP) {
4997 IWL_DEBUG_ISR("Wakeup interrupt\n");
4998 iwl4965_rx_queue_update_write_ptr(priv, &priv->rxq);
4999 iwl4965_tx_queue_update_write_ptr(priv, &priv->txq[0]);
5000 iwl4965_tx_queue_update_write_ptr(priv, &priv->txq[1]);
5001 iwl4965_tx_queue_update_write_ptr(priv, &priv->txq[2]);
5002 iwl4965_tx_queue_update_write_ptr(priv, &priv->txq[3]);
5003 iwl4965_tx_queue_update_write_ptr(priv, &priv->txq[4]);
5004 iwl4965_tx_queue_update_write_ptr(priv, &priv->txq[5]);
5005
5006 handled |= CSR_INT_BIT_WAKEUP;
5007 }
5008
5009 /* All uCode command responses, including Tx command responses,
5010 * Rx "responses" (frame-received notification), and other
5011 * notifications from uCode come through here*/
5012 if (inta & (CSR_INT_BIT_FH_RX | CSR_INT_BIT_SW_RX)) {
5013 iwl4965_rx_handle(priv);
5014 handled |= (CSR_INT_BIT_FH_RX | CSR_INT_BIT_SW_RX);
5015 }
5016
5017 if (inta & CSR_INT_BIT_FH_TX) {
5018 IWL_DEBUG_ISR("Tx interrupt\n");
5019 handled |= CSR_INT_BIT_FH_TX;
5020 }
5021
5022 if (inta & ~handled)
5023 IWL_ERROR("Unhandled INTA bits 0x%08x\n", inta & ~handled);
5024
5025 if (inta & ~CSR_INI_SET_MASK) {
5026 IWL_WARNING("Disabled INTA bits 0x%08x were pending\n",
5027 inta & ~CSR_INI_SET_MASK);
5028 IWL_WARNING(" with FH_INT = 0x%08x\n", inta_fh);
5029 }
5030
5031 /* Re-enable all interrupts */
5032 iwl4965_enable_interrupts(priv);
5033
5034 #ifdef CONFIG_IWL4965_DEBUG
5035 if (iwl4965_debug_level & (IWL_DL_ISR)) {
5036 inta = iwl4965_read32(priv, CSR_INT);
5037 inta_mask = iwl4965_read32(priv, CSR_INT_MASK);
5038 inta_fh = iwl4965_read32(priv, CSR_FH_INT_STATUS);
5039 IWL_DEBUG_ISR("End inta 0x%08x, enabled 0x%08x, fh 0x%08x, "
5040 "flags 0x%08lx\n", inta, inta_mask, inta_fh, flags);
5041 }
5042 #endif
5043 spin_unlock_irqrestore(&priv->lock, flags);
5044 }
5045
5046 static irqreturn_t iwl4965_isr(int irq, void *data)
5047 {
5048 struct iwl4965_priv *priv = data;
5049 u32 inta, inta_mask;
5050 u32 inta_fh;
5051 if (!priv)
5052 return IRQ_NONE;
5053
5054 spin_lock(&priv->lock);
5055
5056 /* Disable (but don't clear!) interrupts here to avoid
5057 * back-to-back ISRs and sporadic interrupts from our NIC.
5058 * If we have something to service, the tasklet will re-enable ints.
5059 * If we *don't* have something, we'll re-enable before leaving here. */
5060 inta_mask = iwl4965_read32(priv, CSR_INT_MASK); /* just for debug */
5061 iwl4965_write32(priv, CSR_INT_MASK, 0x00000000);
5062
5063 /* Discover which interrupts are active/pending */
5064 inta = iwl4965_read32(priv, CSR_INT);
5065 inta_fh = iwl4965_read32(priv, CSR_FH_INT_STATUS);
5066
5067 /* Ignore interrupt if there's nothing in NIC to service.
5068 * This may be due to IRQ shared with another device,
5069 * or due to sporadic interrupts thrown from our NIC. */
5070 if (!inta && !inta_fh) {
5071 IWL_DEBUG_ISR("Ignore interrupt, inta == 0, inta_fh == 0\n");
5072 goto none;
5073 }
5074
5075 if ((inta == 0xFFFFFFFF) || ((inta & 0xFFFFFFF0) == 0xa5a5a5a0)) {
5076 /* Hardware disappeared. It might have already raised
5077 * an interrupt */
5078 IWL_WARNING("HARDWARE GONE?? INTA == 0x%080x\n", inta);
5079 goto unplugged;
5080 }
5081
5082 IWL_DEBUG_ISR("ISR inta 0x%08x, enabled 0x%08x, fh 0x%08x\n",
5083 inta, inta_mask, inta_fh);
5084
5085 inta &= ~CSR_INT_BIT_SCD;
5086
5087 /* iwl4965_irq_tasklet() will service interrupts and re-enable them */
5088 if (likely(inta || inta_fh))
5089 tasklet_schedule(&priv->irq_tasklet);
5090
5091 unplugged:
5092 spin_unlock(&priv->lock);
5093 return IRQ_HANDLED;
5094
5095 none:
5096 /* re-enable interrupts here since we don't have anything to service. */
5097 iwl4965_enable_interrupts(priv);
5098 spin_unlock(&priv->lock);
5099 return IRQ_NONE;
5100 }
5101
5102 /************************** EEPROM BANDS ****************************
5103 *
5104 * The iwl4965_eeprom_band definitions below provide the mapping from the
5105 * EEPROM contents to the specific channel number supported for each
5106 * band.
5107 *
5108 * For example, iwl4965_priv->eeprom.band_3_channels[4] from the band_3
5109 * definition below maps to physical channel 42 in the 5.2GHz spectrum.
5110 * The specific geography and calibration information for that channel
5111 * is contained in the eeprom map itself.
5112 *
5113 * During init, we copy the eeprom information and channel map
5114 * information into priv->channel_info_24/52 and priv->channel_map_24/52
5115 *
5116 * channel_map_24/52 provides the index in the channel_info array for a
5117 * given channel. We have to have two separate maps as there is channel
5118 * overlap with the 2.4GHz and 5.2GHz spectrum as seen in band_1 and
5119 * band_2
5120 *
5121 * A value of 0xff stored in the channel_map indicates that the channel
5122 * is not supported by the hardware at all.
5123 *
5124 * A value of 0xfe in the channel_map indicates that the channel is not
5125 * valid for Tx with the current hardware. This means that
5126 * while the system can tune and receive on a given channel, it may not
5127 * be able to associate or transmit any frames on that
5128 * channel. There is no corresponding channel information for that
5129 * entry.
5130 *
5131 *********************************************************************/
5132
5133 /* 2.4 GHz */
5134 static const u8 iwl4965_eeprom_band_1[14] = {
5135 1, 2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13, 14
5136 };
5137
5138 /* 5.2 GHz bands */
5139 static const u8 iwl4965_eeprom_band_2[] = { /* 4915-5080MHz */
5140 183, 184, 185, 187, 188, 189, 192, 196, 7, 8, 11, 12, 16
5141 };
5142
5143 static const u8 iwl4965_eeprom_band_3[] = { /* 5170-5320MHz */
5144 34, 36, 38, 40, 42, 44, 46, 48, 52, 56, 60, 64
5145 };
5146
5147 static const u8 iwl4965_eeprom_band_4[] = { /* 5500-5700MHz */
5148 100, 104, 108, 112, 116, 120, 124, 128, 132, 136, 140
5149 };
5150
5151 static const u8 iwl4965_eeprom_band_5[] = { /* 5725-5825MHz */
5152 145, 149, 153, 157, 161, 165
5153 };
5154
5155 static u8 iwl4965_eeprom_band_6[] = { /* 2.4 FAT channel */
5156 1, 2, 3, 4, 5, 6, 7
5157 };
5158
5159 static u8 iwl4965_eeprom_band_7[] = { /* 5.2 FAT channel */
5160 36, 44, 52, 60, 100, 108, 116, 124, 132, 149, 157
5161 };
5162
5163 static void iwl4965_init_band_reference(const struct iwl4965_priv *priv,
5164 int band,
5165 int *eeprom_ch_count,
5166 const struct iwl4965_eeprom_channel
5167 **eeprom_ch_info,
5168 const u8 **eeprom_ch_index)
5169 {
5170 switch (band) {
5171 case 1: /* 2.4GHz band */
5172 *eeprom_ch_count = ARRAY_SIZE(iwl4965_eeprom_band_1);
5173 *eeprom_ch_info = priv->eeprom.band_1_channels;
5174 *eeprom_ch_index = iwl4965_eeprom_band_1;
5175 break;
5176 case 2: /* 4.9GHz band */
5177 *eeprom_ch_count = ARRAY_SIZE(iwl4965_eeprom_band_2);
5178 *eeprom_ch_info = priv->eeprom.band_2_channels;
5179 *eeprom_ch_index = iwl4965_eeprom_band_2;
5180 break;
5181 case 3: /* 5.2GHz band */
5182 *eeprom_ch_count = ARRAY_SIZE(iwl4965_eeprom_band_3);
5183 *eeprom_ch_info = priv->eeprom.band_3_channels;
5184 *eeprom_ch_index = iwl4965_eeprom_band_3;
5185 break;
5186 case 4: /* 5.5GHz band */
5187 *eeprom_ch_count = ARRAY_SIZE(iwl4965_eeprom_band_4);
5188 *eeprom_ch_info = priv->eeprom.band_4_channels;
5189 *eeprom_ch_index = iwl4965_eeprom_band_4;
5190 break;
5191 case 5: /* 5.7GHz band */
5192 *eeprom_ch_count = ARRAY_SIZE(iwl4965_eeprom_band_5);
5193 *eeprom_ch_info = priv->eeprom.band_5_channels;
5194 *eeprom_ch_index = iwl4965_eeprom_band_5;
5195 break;
5196 case 6: /* 2.4GHz FAT channels */
5197 *eeprom_ch_count = ARRAY_SIZE(iwl4965_eeprom_band_6);
5198 *eeprom_ch_info = priv->eeprom.band_24_channels;
5199 *eeprom_ch_index = iwl4965_eeprom_band_6;
5200 break;
5201 case 7: /* 5 GHz FAT channels */
5202 *eeprom_ch_count = ARRAY_SIZE(iwl4965_eeprom_band_7);
5203 *eeprom_ch_info = priv->eeprom.band_52_channels;
5204 *eeprom_ch_index = iwl4965_eeprom_band_7;
5205 break;
5206 default:
5207 BUG();
5208 return;
5209 }
5210 }
5211
5212 /**
5213 * iwl4965_get_channel_info - Find driver's private channel info
5214 *
5215 * Based on band and channel number.
5216 */
5217 const struct iwl4965_channel_info *iwl4965_get_channel_info(const struct iwl4965_priv *priv,
5218 enum ieee80211_band band, u16 channel)
5219 {
5220 int i;
5221
5222 switch (band) {
5223 case IEEE80211_BAND_5GHZ:
5224 for (i = 14; i < priv->channel_count; i++) {
5225 if (priv->channel_info[i].channel == channel)
5226 return &priv->channel_info[i];
5227 }
5228 break;
5229 case IEEE80211_BAND_2GHZ:
5230 if (channel >= 1 && channel <= 14)
5231 return &priv->channel_info[channel - 1];
5232 break;
5233 default:
5234 BUG();
5235 }
5236
5237 return NULL;
5238 }
5239
5240 #define CHECK_AND_PRINT(x) ((eeprom_ch_info[ch].flags & EEPROM_CHANNEL_##x) \
5241 ? # x " " : "")
5242
5243 /**
5244 * iwl4965_init_channel_map - Set up driver's info for all possible channels
5245 */
5246 static int iwl4965_init_channel_map(struct iwl4965_priv *priv)
5247 {
5248 int eeprom_ch_count = 0;
5249 const u8 *eeprom_ch_index = NULL;
5250 const struct iwl4965_eeprom_channel *eeprom_ch_info = NULL;
5251 int band, ch;
5252 struct iwl4965_channel_info *ch_info;
5253
5254 if (priv->channel_count) {
5255 IWL_DEBUG_INFO("Channel map already initialized.\n");
5256 return 0;
5257 }
5258
5259 if (priv->eeprom.version < 0x2f) {
5260 IWL_WARNING("Unsupported EEPROM version: 0x%04X\n",
5261 priv->eeprom.version);
5262 return -EINVAL;
5263 }
5264
5265 IWL_DEBUG_INFO("Initializing regulatory info from EEPROM\n");
5266
5267 priv->channel_count =
5268 ARRAY_SIZE(iwl4965_eeprom_band_1) +
5269 ARRAY_SIZE(iwl4965_eeprom_band_2) +
5270 ARRAY_SIZE(iwl4965_eeprom_band_3) +
5271 ARRAY_SIZE(iwl4965_eeprom_band_4) +
5272 ARRAY_SIZE(iwl4965_eeprom_band_5);
5273
5274 IWL_DEBUG_INFO("Parsing data for %d channels.\n", priv->channel_count);
5275
5276 priv->channel_info = kzalloc(sizeof(struct iwl4965_channel_info) *
5277 priv->channel_count, GFP_KERNEL);
5278 if (!priv->channel_info) {
5279 IWL_ERROR("Could not allocate channel_info\n");
5280 priv->channel_count = 0;
5281 return -ENOMEM;
5282 }
5283
5284 ch_info = priv->channel_info;
5285
5286 /* Loop through the 5 EEPROM bands adding them in order to the
5287 * channel map we maintain (that contains additional information than
5288 * what just in the EEPROM) */
5289 for (band = 1; band <= 5; band++) {
5290
5291 iwl4965_init_band_reference(priv, band, &eeprom_ch_count,
5292 &eeprom_ch_info, &eeprom_ch_index);
5293
5294 /* Loop through each band adding each of the channels */
5295 for (ch = 0; ch < eeprom_ch_count; ch++) {
5296 ch_info->channel = eeprom_ch_index[ch];
5297 ch_info->band = (band == 1) ? IEEE80211_BAND_2GHZ :
5298 IEEE80211_BAND_5GHZ;
5299
5300 /* permanently store EEPROM's channel regulatory flags
5301 * and max power in channel info database. */
5302 ch_info->eeprom = eeprom_ch_info[ch];
5303
5304 /* Copy the run-time flags so they are there even on
5305 * invalid channels */
5306 ch_info->flags = eeprom_ch_info[ch].flags;
5307
5308 if (!(is_channel_valid(ch_info))) {
5309 IWL_DEBUG_INFO("Ch. %d Flags %x [%sGHz] - "
5310 "No traffic\n",
5311 ch_info->channel,
5312 ch_info->flags,
5313 is_channel_a_band(ch_info) ?
5314 "5.2" : "2.4");
5315 ch_info++;
5316 continue;
5317 }
5318
5319 /* Initialize regulatory-based run-time data */
5320 ch_info->max_power_avg = ch_info->curr_txpow =
5321 eeprom_ch_info[ch].max_power_avg;
5322 ch_info->scan_power = eeprom_ch_info[ch].max_power_avg;
5323 ch_info->min_power = 0;
5324
5325 IWL_DEBUG_INFO("Ch. %d [%sGHz] %s%s%s%s%s%s%s(0x%02x"
5326 " %ddBm): Ad-Hoc %ssupported\n",
5327 ch_info->channel,
5328 is_channel_a_band(ch_info) ?
5329 "5.2" : "2.4",
5330 CHECK_AND_PRINT(VALID),
5331 CHECK_AND_PRINT(IBSS),
5332 CHECK_AND_PRINT(ACTIVE),
5333 CHECK_AND_PRINT(RADAR),
5334 CHECK_AND_PRINT(WIDE),
5335 CHECK_AND_PRINT(NARROW),
5336 CHECK_AND_PRINT(DFS),
5337 eeprom_ch_info[ch].flags,
5338 eeprom_ch_info[ch].max_power_avg,
5339 ((eeprom_ch_info[ch].
5340 flags & EEPROM_CHANNEL_IBSS)
5341 && !(eeprom_ch_info[ch].
5342 flags & EEPROM_CHANNEL_RADAR))
5343 ? "" : "not ");
5344
5345 /* Set the user_txpower_limit to the highest power
5346 * supported by any channel */
5347 if (eeprom_ch_info[ch].max_power_avg >
5348 priv->user_txpower_limit)
5349 priv->user_txpower_limit =
5350 eeprom_ch_info[ch].max_power_avg;
5351
5352 ch_info++;
5353 }
5354 }
5355
5356 /* Two additional EEPROM bands for 2.4 and 5 GHz FAT channels */
5357 for (band = 6; band <= 7; band++) {
5358 enum ieee80211_band ieeeband;
5359 u8 fat_extension_chan;
5360
5361 iwl4965_init_band_reference(priv, band, &eeprom_ch_count,
5362 &eeprom_ch_info, &eeprom_ch_index);
5363
5364 /* EEPROM band 6 is 2.4, band 7 is 5 GHz */
5365 ieeeband = (band == 6) ? IEEE80211_BAND_2GHZ : IEEE80211_BAND_5GHZ;
5366
5367 /* Loop through each band adding each of the channels */
5368 for (ch = 0; ch < eeprom_ch_count; ch++) {
5369
5370 if ((band == 6) &&
5371 ((eeprom_ch_index[ch] == 5) ||
5372 (eeprom_ch_index[ch] == 6) ||
5373 (eeprom_ch_index[ch] == 7)))
5374 fat_extension_chan = HT_IE_EXT_CHANNEL_MAX;
5375 else
5376 fat_extension_chan = HT_IE_EXT_CHANNEL_ABOVE;
5377
5378 /* Set up driver's info for lower half */
5379 iwl4965_set_fat_chan_info(priv, ieeeband,
5380 eeprom_ch_index[ch],
5381 &(eeprom_ch_info[ch]),
5382 fat_extension_chan);
5383
5384 /* Set up driver's info for upper half */
5385 iwl4965_set_fat_chan_info(priv, ieeeband,
5386 (eeprom_ch_index[ch] + 4),
5387 &(eeprom_ch_info[ch]),
5388 HT_IE_EXT_CHANNEL_BELOW);
5389 }
5390 }
5391
5392 return 0;
5393 }
5394
5395 /*
5396 * iwl4965_free_channel_map - undo allocations in iwl4965_init_channel_map
5397 */
5398 static void iwl4965_free_channel_map(struct iwl4965_priv *priv)
5399 {
5400 kfree(priv->channel_info);
5401 priv->channel_count = 0;
5402 }
5403
5404 /* For active scan, listen ACTIVE_DWELL_TIME (msec) on each channel after
5405 * sending probe req. This should be set long enough to hear probe responses
5406 * from more than one AP. */
5407 #define IWL_ACTIVE_DWELL_TIME_24 (20) /* all times in msec */
5408 #define IWL_ACTIVE_DWELL_TIME_52 (10)
5409
5410 /* For faster active scanning, scan will move to the next channel if fewer than
5411 * PLCP_QUIET_THRESH packets are heard on this channel within
5412 * ACTIVE_QUIET_TIME after sending probe request. This shortens the dwell
5413 * time if it's a quiet channel (nothing responded to our probe, and there's
5414 * no other traffic).
5415 * Disable "quiet" feature by setting PLCP_QUIET_THRESH to 0. */
5416 #define IWL_PLCP_QUIET_THRESH __constant_cpu_to_le16(1) /* packets */
5417 #define IWL_ACTIVE_QUIET_TIME __constant_cpu_to_le16(5) /* msec */
5418
5419 /* For passive scan, listen PASSIVE_DWELL_TIME (msec) on each channel.
5420 * Must be set longer than active dwell time.
5421 * For the most reliable scan, set > AP beacon interval (typically 100msec). */
5422 #define IWL_PASSIVE_DWELL_TIME_24 (20) /* all times in msec */
5423 #define IWL_PASSIVE_DWELL_TIME_52 (10)
5424 #define IWL_PASSIVE_DWELL_BASE (100)
5425 #define IWL_CHANNEL_TUNE_TIME 5
5426
5427 static inline u16 iwl4965_get_active_dwell_time(struct iwl4965_priv *priv,
5428 enum ieee80211_band band)
5429 {
5430 if (band == IEEE80211_BAND_5GHZ)
5431 return IWL_ACTIVE_DWELL_TIME_52;
5432 else
5433 return IWL_ACTIVE_DWELL_TIME_24;
5434 }
5435
5436 static u16 iwl4965_get_passive_dwell_time(struct iwl4965_priv *priv,
5437 enum ieee80211_band band)
5438 {
5439 u16 active = iwl4965_get_active_dwell_time(priv, band);
5440 u16 passive = (band != IEEE80211_BAND_5GHZ) ?
5441 IWL_PASSIVE_DWELL_BASE + IWL_PASSIVE_DWELL_TIME_24 :
5442 IWL_PASSIVE_DWELL_BASE + IWL_PASSIVE_DWELL_TIME_52;
5443
5444 if (iwl4965_is_associated(priv)) {
5445 /* If we're associated, we clamp the maximum passive
5446 * dwell time to be 98% of the beacon interval (minus
5447 * 2 * channel tune time) */
5448 passive = priv->beacon_int;
5449 if ((passive > IWL_PASSIVE_DWELL_BASE) || !passive)
5450 passive = IWL_PASSIVE_DWELL_BASE;
5451 passive = (passive * 98) / 100 - IWL_CHANNEL_TUNE_TIME * 2;
5452 }
5453
5454 if (passive <= active)
5455 passive = active + 1;
5456
5457 return passive;
5458 }
5459
5460 static int iwl4965_get_channels_for_scan(struct iwl4965_priv *priv,
5461 enum ieee80211_band band,
5462 u8 is_active, u8 direct_mask,
5463 struct iwl4965_scan_channel *scan_ch)
5464 {
5465 const struct ieee80211_channel *channels = NULL;
5466 const struct ieee80211_supported_band *sband;
5467 const struct iwl4965_channel_info *ch_info;
5468 u16 passive_dwell = 0;
5469 u16 active_dwell = 0;
5470 int added, i;
5471
5472 sband = iwl4965_get_hw_mode(priv, band);
5473 if (!sband)
5474 return 0;
5475
5476 channels = sband->channels;
5477
5478 active_dwell = iwl4965_get_active_dwell_time(priv, band);
5479 passive_dwell = iwl4965_get_passive_dwell_time(priv, band);
5480
5481 for (i = 0, added = 0; i < sband->n_channels; i++) {
5482 if (ieee80211_frequency_to_channel(channels[i].center_freq) ==
5483 le16_to_cpu(priv->active_rxon.channel)) {
5484 if (iwl4965_is_associated(priv)) {
5485 IWL_DEBUG_SCAN
5486 ("Skipping current channel %d\n",
5487 le16_to_cpu(priv->active_rxon.channel));
5488 continue;
5489 }
5490 } else if (priv->only_active_channel)
5491 continue;
5492
5493 scan_ch->channel = ieee80211_frequency_to_channel(channels[i].center_freq);
5494
5495 ch_info = iwl4965_get_channel_info(priv, band,
5496 scan_ch->channel);
5497 if (!is_channel_valid(ch_info)) {
5498 IWL_DEBUG_SCAN("Channel %d is INVALID for this SKU.\n",
5499 scan_ch->channel);
5500 continue;
5501 }
5502
5503 if (!is_active || is_channel_passive(ch_info) ||
5504 (channels[i].flags & IEEE80211_CHAN_PASSIVE_SCAN))
5505 scan_ch->type = 0; /* passive */
5506 else
5507 scan_ch->type = 1; /* active */
5508
5509 if (scan_ch->type & 1)
5510 scan_ch->type |= (direct_mask << 1);
5511
5512 if (is_channel_narrow(ch_info))
5513 scan_ch->type |= (1 << 7);
5514
5515 scan_ch->active_dwell = cpu_to_le16(active_dwell);
5516 scan_ch->passive_dwell = cpu_to_le16(passive_dwell);
5517
5518 /* Set txpower levels to defaults */
5519 scan_ch->tpc.dsp_atten = 110;
5520 /* scan_pwr_info->tpc.dsp_atten; */
5521
5522 /*scan_pwr_info->tpc.tx_gain; */
5523 if (band == IEEE80211_BAND_5GHZ)
5524 scan_ch->tpc.tx_gain = ((1 << 5) | (3 << 3)) | 3;
5525 else {
5526 scan_ch->tpc.tx_gain = ((1 << 5) | (5 << 3));
5527 /* NOTE: if we were doing 6Mb OFDM for scans we'd use
5528 * power level:
5529 * scan_ch->tpc.tx_gain = ((1 << 5) | (2 << 3)) | 3;
5530 */
5531 }
5532
5533 IWL_DEBUG_SCAN("Scanning %d [%s %d]\n",
5534 scan_ch->channel,
5535 (scan_ch->type & 1) ? "ACTIVE" : "PASSIVE",
5536 (scan_ch->type & 1) ?
5537 active_dwell : passive_dwell);
5538
5539 scan_ch++;
5540 added++;
5541 }
5542
5543 IWL_DEBUG_SCAN("total channels to scan %d \n", added);
5544 return added;
5545 }
5546
5547 static void iwl4965_init_hw_rates(struct iwl4965_priv *priv,
5548 struct ieee80211_rate *rates)
5549 {
5550 int i;
5551
5552 for (i = 0; i < IWL_RATE_COUNT; i++) {
5553 rates[i].bitrate = iwl4965_rates[i].ieee * 5;
5554 rates[i].hw_value = i; /* Rate scaling will work on indexes */
5555 rates[i].hw_value_short = i;
5556 rates[i].flags = 0;
5557 if ((i > IWL_LAST_OFDM_RATE) || (i < IWL_FIRST_OFDM_RATE)) {
5558 /*
5559 * If CCK != 1M then set short preamble rate flag.
5560 */
5561 rates[i].flags |= (iwl4965_rates[i].plcp == 10) ?
5562 0 : IEEE80211_RATE_SHORT_PREAMBLE;
5563 }
5564 }
5565 }
5566
5567 /**
5568 * iwl4965_init_geos - Initialize mac80211's geo/channel info based from eeprom
5569 */
5570 static int iwl4965_init_geos(struct iwl4965_priv *priv)
5571 {
5572 struct iwl4965_channel_info *ch;
5573 struct ieee80211_supported_band *sband;
5574 struct ieee80211_channel *channels;
5575 struct ieee80211_channel *geo_ch;
5576 struct ieee80211_rate *rates;
5577 int i = 0;
5578
5579 if (priv->bands[IEEE80211_BAND_2GHZ].n_bitrates ||
5580 priv->bands[IEEE80211_BAND_5GHZ].n_bitrates) {
5581 IWL_DEBUG_INFO("Geography modes already initialized.\n");
5582 set_bit(STATUS_GEO_CONFIGURED, &priv->status);
5583 return 0;
5584 }
5585
5586 channels = kzalloc(sizeof(struct ieee80211_channel) *
5587 priv->channel_count, GFP_KERNEL);
5588 if (!channels)
5589 return -ENOMEM;
5590
5591 rates = kzalloc((sizeof(struct ieee80211_rate) * (IWL_RATE_COUNT + 1)),
5592 GFP_KERNEL);
5593 if (!rates) {
5594 kfree(channels);
5595 return -ENOMEM;
5596 }
5597
5598 /* 5.2GHz channels start after the 2.4GHz channels */
5599 sband = &priv->bands[IEEE80211_BAND_5GHZ];
5600 sband->channels = &channels[ARRAY_SIZE(iwl4965_eeprom_band_1)];
5601 /* just OFDM */
5602 sband->bitrates = &rates[IWL_FIRST_OFDM_RATE];
5603 sband->n_bitrates = IWL_RATE_COUNT - IWL_FIRST_OFDM_RATE;
5604
5605 iwl4965_init_ht_hw_capab(&sband->ht_info, IEEE80211_BAND_5GHZ);
5606
5607 sband = &priv->bands[IEEE80211_BAND_2GHZ];
5608 sband->channels = channels;
5609 /* OFDM & CCK */
5610 sband->bitrates = rates;
5611 sband->n_bitrates = IWL_RATE_COUNT;
5612
5613 iwl4965_init_ht_hw_capab(&sband->ht_info, IEEE80211_BAND_2GHZ);
5614
5615 priv->ieee_channels = channels;
5616 priv->ieee_rates = rates;
5617
5618 iwl4965_init_hw_rates(priv, rates);
5619
5620 for (i = 0; i < priv->channel_count; i++) {
5621 ch = &priv->channel_info[i];
5622
5623 /* FIXME: might be removed if scan is OK */
5624 if (!is_channel_valid(ch))
5625 continue;
5626
5627 if (is_channel_a_band(ch))
5628 sband = &priv->bands[IEEE80211_BAND_5GHZ];
5629 else
5630 sband = &priv->bands[IEEE80211_BAND_2GHZ];
5631
5632 geo_ch = &sband->channels[sband->n_channels++];
5633
5634 geo_ch->center_freq = ieee80211_channel_to_frequency(ch->channel);
5635 geo_ch->max_power = ch->max_power_avg;
5636 geo_ch->max_antenna_gain = 0xff;
5637 geo_ch->hw_value = ch->channel;
5638
5639 if (is_channel_valid(ch)) {
5640 if (!(ch->flags & EEPROM_CHANNEL_IBSS))
5641 geo_ch->flags |= IEEE80211_CHAN_NO_IBSS;
5642
5643 if (!(ch->flags & EEPROM_CHANNEL_ACTIVE))
5644 geo_ch->flags |= IEEE80211_CHAN_PASSIVE_SCAN;
5645
5646 if (ch->flags & EEPROM_CHANNEL_RADAR)
5647 geo_ch->flags |= IEEE80211_CHAN_RADAR;
5648
5649 if (ch->max_power_avg > priv->max_channel_txpower_limit)
5650 priv->max_channel_txpower_limit =
5651 ch->max_power_avg;
5652 } else {
5653 geo_ch->flags |= IEEE80211_CHAN_DISABLED;
5654 }
5655
5656 /* Save flags for reg domain usage */
5657 geo_ch->orig_flags = geo_ch->flags;
5658
5659 IWL_DEBUG_INFO("Channel %d Freq=%d[%sGHz] %s flag=0%X\n",
5660 ch->channel, geo_ch->center_freq,
5661 is_channel_a_band(ch) ? "5.2" : "2.4",
5662 geo_ch->flags & IEEE80211_CHAN_DISABLED ?
5663 "restricted" : "valid",
5664 geo_ch->flags);
5665 }
5666
5667 if ((priv->bands[IEEE80211_BAND_5GHZ].n_channels == 0) &&
5668 priv->cfg->sku & IWL_SKU_A) {
5669 printk(KERN_INFO DRV_NAME
5670 ": Incorrectly detected BG card as ABG. Please send "
5671 "your PCI ID 0x%04X:0x%04X to maintainer.\n",
5672 priv->pci_dev->device, priv->pci_dev->subsystem_device);
5673 priv->cfg->sku &= ~IWL_SKU_A;
5674 }
5675
5676 printk(KERN_INFO DRV_NAME
5677 ": Tunable channels: %d 802.11bg, %d 802.11a channels\n",
5678 priv->bands[IEEE80211_BAND_2GHZ].n_channels,
5679 priv->bands[IEEE80211_BAND_5GHZ].n_channels);
5680
5681 priv->hw->wiphy->bands[IEEE80211_BAND_2GHZ] = &priv->bands[IEEE80211_BAND_2GHZ];
5682 priv->hw->wiphy->bands[IEEE80211_BAND_5GHZ] = &priv->bands[IEEE80211_BAND_5GHZ];
5683
5684 set_bit(STATUS_GEO_CONFIGURED, &priv->status);
5685
5686 return 0;
5687 }
5688
5689 /*
5690 * iwl4965_free_geos - undo allocations in iwl4965_init_geos
5691 */
5692 static void iwl4965_free_geos(struct iwl4965_priv *priv)
5693 {
5694 kfree(priv->ieee_channels);
5695 kfree(priv->ieee_rates);
5696 clear_bit(STATUS_GEO_CONFIGURED, &priv->status);
5697 }
5698
5699 /******************************************************************************
5700 *
5701 * uCode download functions
5702 *
5703 ******************************************************************************/
5704
5705 static void iwl4965_dealloc_ucode_pci(struct iwl4965_priv *priv)
5706 {
5707 iwl_free_fw_desc(priv->pci_dev, &priv->ucode_code);
5708 iwl_free_fw_desc(priv->pci_dev, &priv->ucode_data);
5709 iwl_free_fw_desc(priv->pci_dev, &priv->ucode_data_backup);
5710 iwl_free_fw_desc(priv->pci_dev, &priv->ucode_init);
5711 iwl_free_fw_desc(priv->pci_dev, &priv->ucode_init_data);
5712 iwl_free_fw_desc(priv->pci_dev, &priv->ucode_boot);
5713 }
5714
5715 /**
5716 * iwl4965_verify_inst_full - verify runtime uCode image in card vs. host,
5717 * looking at all data.
5718 */
5719 static int iwl4965_verify_inst_full(struct iwl4965_priv *priv, __le32 *image,
5720 u32 len)
5721 {
5722 u32 val;
5723 u32 save_len = len;
5724 int rc = 0;
5725 u32 errcnt;
5726
5727 IWL_DEBUG_INFO("ucode inst image size is %u\n", len);
5728
5729 rc = iwl4965_grab_nic_access(priv);
5730 if (rc)
5731 return rc;
5732
5733 iwl4965_write_direct32(priv, HBUS_TARG_MEM_RADDR, RTC_INST_LOWER_BOUND);
5734
5735 errcnt = 0;
5736 for (; len > 0; len -= sizeof(u32), image++) {
5737 /* read data comes through single port, auto-incr addr */
5738 /* NOTE: Use the debugless read so we don't flood kernel log
5739 * if IWL_DL_IO is set */
5740 val = _iwl4965_read_direct32(priv, HBUS_TARG_MEM_RDAT);
5741 if (val != le32_to_cpu(*image)) {
5742 IWL_ERROR("uCode INST section is invalid at "
5743 "offset 0x%x, is 0x%x, s/b 0x%x\n",
5744 save_len - len, val, le32_to_cpu(*image));
5745 rc = -EIO;
5746 errcnt++;
5747 if (errcnt >= 20)
5748 break;
5749 }
5750 }
5751
5752 iwl4965_release_nic_access(priv);
5753
5754 if (!errcnt)
5755 IWL_DEBUG_INFO
5756 ("ucode image in INSTRUCTION memory is good\n");
5757
5758 return rc;
5759 }
5760
5761
5762 /**
5763 * iwl4965_verify_inst_sparse - verify runtime uCode image in card vs. host,
5764 * using sample data 100 bytes apart. If these sample points are good,
5765 * it's a pretty good bet that everything between them is good, too.
5766 */
5767 static int iwl4965_verify_inst_sparse(struct iwl4965_priv *priv, __le32 *image, u32 len)
5768 {
5769 u32 val;
5770 int rc = 0;
5771 u32 errcnt = 0;
5772 u32 i;
5773
5774 IWL_DEBUG_INFO("ucode inst image size is %u\n", len);
5775
5776 rc = iwl4965_grab_nic_access(priv);
5777 if (rc)
5778 return rc;
5779
5780 for (i = 0; i < len; i += 100, image += 100/sizeof(u32)) {
5781 /* read data comes through single port, auto-incr addr */
5782 /* NOTE: Use the debugless read so we don't flood kernel log
5783 * if IWL_DL_IO is set */
5784 iwl4965_write_direct32(priv, HBUS_TARG_MEM_RADDR,
5785 i + RTC_INST_LOWER_BOUND);
5786 val = _iwl4965_read_direct32(priv, HBUS_TARG_MEM_RDAT);
5787 if (val != le32_to_cpu(*image)) {
5788 #if 0 /* Enable this if you want to see details */
5789 IWL_ERROR("uCode INST section is invalid at "
5790 "offset 0x%x, is 0x%x, s/b 0x%x\n",
5791 i, val, *image);
5792 #endif
5793 rc = -EIO;
5794 errcnt++;
5795 if (errcnt >= 3)
5796 break;
5797 }
5798 }
5799
5800 iwl4965_release_nic_access(priv);
5801
5802 return rc;
5803 }
5804
5805
5806 /**
5807 * iwl4965_verify_ucode - determine which instruction image is in SRAM,
5808 * and verify its contents
5809 */
5810 static int iwl4965_verify_ucode(struct iwl4965_priv *priv)
5811 {
5812 __le32 *image;
5813 u32 len;
5814 int rc = 0;
5815
5816 /* Try bootstrap */
5817 image = (__le32 *)priv->ucode_boot.v_addr;
5818 len = priv->ucode_boot.len;
5819 rc = iwl4965_verify_inst_sparse(priv, image, len);
5820 if (rc == 0) {
5821 IWL_DEBUG_INFO("Bootstrap uCode is good in inst SRAM\n");
5822 return 0;
5823 }
5824
5825 /* Try initialize */
5826 image = (__le32 *)priv->ucode_init.v_addr;
5827 len = priv->ucode_init.len;
5828 rc = iwl4965_verify_inst_sparse(priv, image, len);
5829 if (rc == 0) {
5830 IWL_DEBUG_INFO("Initialize uCode is good in inst SRAM\n");
5831 return 0;
5832 }
5833
5834 /* Try runtime/protocol */
5835 image = (__le32 *)priv->ucode_code.v_addr;
5836 len = priv->ucode_code.len;
5837 rc = iwl4965_verify_inst_sparse(priv, image, len);
5838 if (rc == 0) {
5839 IWL_DEBUG_INFO("Runtime uCode is good in inst SRAM\n");
5840 return 0;
5841 }
5842
5843 IWL_ERROR("NO VALID UCODE IMAGE IN INSTRUCTION SRAM!!\n");
5844
5845 /* Since nothing seems to match, show first several data entries in
5846 * instruction SRAM, so maybe visual inspection will give a clue.
5847 * Selection of bootstrap image (vs. other images) is arbitrary. */
5848 image = (__le32 *)priv->ucode_boot.v_addr;
5849 len = priv->ucode_boot.len;
5850 rc = iwl4965_verify_inst_full(priv, image, len);
5851
5852 return rc;
5853 }
5854
5855
5856 /* check contents of special bootstrap uCode SRAM */
5857 static int iwl4965_verify_bsm(struct iwl4965_priv *priv)
5858 {
5859 __le32 *image = priv->ucode_boot.v_addr;
5860 u32 len = priv->ucode_boot.len;
5861 u32 reg;
5862 u32 val;
5863
5864 IWL_DEBUG_INFO("Begin verify bsm\n");
5865
5866 /* verify BSM SRAM contents */
5867 val = iwl4965_read_prph(priv, BSM_WR_DWCOUNT_REG);
5868 for (reg = BSM_SRAM_LOWER_BOUND;
5869 reg < BSM_SRAM_LOWER_BOUND + len;
5870 reg += sizeof(u32), image ++) {
5871 val = iwl4965_read_prph(priv, reg);
5872 if (val != le32_to_cpu(*image)) {
5873 IWL_ERROR("BSM uCode verification failed at "
5874 "addr 0x%08X+%u (of %u), is 0x%x, s/b 0x%x\n",
5875 BSM_SRAM_LOWER_BOUND,
5876 reg - BSM_SRAM_LOWER_BOUND, len,
5877 val, le32_to_cpu(*image));
5878 return -EIO;
5879 }
5880 }
5881
5882 IWL_DEBUG_INFO("BSM bootstrap uCode image OK\n");
5883
5884 return 0;
5885 }
5886
5887 /**
5888 * iwl4965_load_bsm - Load bootstrap instructions
5889 *
5890 * BSM operation:
5891 *
5892 * The Bootstrap State Machine (BSM) stores a short bootstrap uCode program
5893 * in special SRAM that does not power down during RFKILL. When powering back
5894 * up after power-saving sleeps (or during initial uCode load), the BSM loads
5895 * the bootstrap program into the on-board processor, and starts it.
5896 *
5897 * The bootstrap program loads (via DMA) instructions and data for a new
5898 * program from host DRAM locations indicated by the host driver in the
5899 * BSM_DRAM_* registers. Once the new program is loaded, it starts
5900 * automatically.
5901 *
5902 * When initializing the NIC, the host driver points the BSM to the
5903 * "initialize" uCode image. This uCode sets up some internal data, then
5904 * notifies host via "initialize alive" that it is complete.
5905 *
5906 * The host then replaces the BSM_DRAM_* pointer values to point to the
5907 * normal runtime uCode instructions and a backup uCode data cache buffer
5908 * (filled initially with starting data values for the on-board processor),
5909 * then triggers the "initialize" uCode to load and launch the runtime uCode,
5910 * which begins normal operation.
5911 *
5912 * When doing a power-save shutdown, runtime uCode saves data SRAM into
5913 * the backup data cache in DRAM before SRAM is powered down.
5914 *
5915 * When powering back up, the BSM loads the bootstrap program. This reloads
5916 * the runtime uCode instructions and the backup data cache into SRAM,
5917 * and re-launches the runtime uCode from where it left off.
5918 */
5919 static int iwl4965_load_bsm(struct iwl4965_priv *priv)
5920 {
5921 __le32 *image = priv->ucode_boot.v_addr;
5922 u32 len = priv->ucode_boot.len;
5923 dma_addr_t pinst;
5924 dma_addr_t pdata;
5925 u32 inst_len;
5926 u32 data_len;
5927 int rc;
5928 int i;
5929 u32 done;
5930 u32 reg_offset;
5931
5932 IWL_DEBUG_INFO("Begin load bsm\n");
5933
5934 /* make sure bootstrap program is no larger than BSM's SRAM size */
5935 if (len > IWL_MAX_BSM_SIZE)
5936 return -EINVAL;
5937
5938 /* Tell bootstrap uCode where to find the "Initialize" uCode
5939 * in host DRAM ... host DRAM physical address bits 35:4 for 4965.
5940 * NOTE: iwl4965_initialize_alive_start() will replace these values,
5941 * after the "initialize" uCode has run, to point to
5942 * runtime/protocol instructions and backup data cache. */
5943 pinst = priv->ucode_init.p_addr >> 4;
5944 pdata = priv->ucode_init_data.p_addr >> 4;
5945 inst_len = priv->ucode_init.len;
5946 data_len = priv->ucode_init_data.len;
5947
5948 rc = iwl4965_grab_nic_access(priv);
5949 if (rc)
5950 return rc;
5951
5952 iwl4965_write_prph(priv, BSM_DRAM_INST_PTR_REG, pinst);
5953 iwl4965_write_prph(priv, BSM_DRAM_DATA_PTR_REG, pdata);
5954 iwl4965_write_prph(priv, BSM_DRAM_INST_BYTECOUNT_REG, inst_len);
5955 iwl4965_write_prph(priv, BSM_DRAM_DATA_BYTECOUNT_REG, data_len);
5956
5957 /* Fill BSM memory with bootstrap instructions */
5958 for (reg_offset = BSM_SRAM_LOWER_BOUND;
5959 reg_offset < BSM_SRAM_LOWER_BOUND + len;
5960 reg_offset += sizeof(u32), image++)
5961 _iwl4965_write_prph(priv, reg_offset,
5962 le32_to_cpu(*image));
5963
5964 rc = iwl4965_verify_bsm(priv);
5965 if (rc) {
5966 iwl4965_release_nic_access(priv);
5967 return rc;
5968 }
5969
5970 /* Tell BSM to copy from BSM SRAM into instruction SRAM, when asked */
5971 iwl4965_write_prph(priv, BSM_WR_MEM_SRC_REG, 0x0);
5972 iwl4965_write_prph(priv, BSM_WR_MEM_DST_REG,
5973 RTC_INST_LOWER_BOUND);
5974 iwl4965_write_prph(priv, BSM_WR_DWCOUNT_REG, len / sizeof(u32));
5975
5976 /* Load bootstrap code into instruction SRAM now,
5977 * to prepare to load "initialize" uCode */
5978 iwl4965_write_prph(priv, BSM_WR_CTRL_REG,
5979 BSM_WR_CTRL_REG_BIT_START);
5980
5981 /* Wait for load of bootstrap uCode to finish */
5982 for (i = 0; i < 100; i++) {
5983 done = iwl4965_read_prph(priv, BSM_WR_CTRL_REG);
5984 if (!(done & BSM_WR_CTRL_REG_BIT_START))
5985 break;
5986 udelay(10);
5987 }
5988 if (i < 100)
5989 IWL_DEBUG_INFO("BSM write complete, poll %d iterations\n", i);
5990 else {
5991 IWL_ERROR("BSM write did not complete!\n");
5992 return -EIO;
5993 }
5994
5995 /* Enable future boot loads whenever power management unit triggers it
5996 * (e.g. when powering back up after power-save shutdown) */
5997 iwl4965_write_prph(priv, BSM_WR_CTRL_REG,
5998 BSM_WR_CTRL_REG_BIT_START_EN);
5999
6000 iwl4965_release_nic_access(priv);
6001
6002 return 0;
6003 }
6004
6005 static void iwl4965_nic_start(struct iwl4965_priv *priv)
6006 {
6007 /* Remove all resets to allow NIC to operate */
6008 iwl4965_write32(priv, CSR_RESET, 0);
6009 }
6010
6011
6012 /**
6013 * iwl4965_read_ucode - Read uCode images from disk file.
6014 *
6015 * Copy into buffers for card to fetch via bus-mastering
6016 */
6017 static int iwl4965_read_ucode(struct iwl4965_priv *priv)
6018 {
6019 struct iwl4965_ucode *ucode;
6020 int ret;
6021 const struct firmware *ucode_raw;
6022 const char *name = "iwlwifi-4965" IWL4965_UCODE_API ".ucode";
6023 u8 *src;
6024 size_t len;
6025 u32 ver, inst_size, data_size, init_size, init_data_size, boot_size;
6026
6027 /* Ask kernel firmware_class module to get the boot firmware off disk.
6028 * request_firmware() is synchronous, file is in memory on return. */
6029 ret = request_firmware(&ucode_raw, name, &priv->pci_dev->dev);
6030 if (ret < 0) {
6031 IWL_ERROR("%s firmware file req failed: Reason %d\n",
6032 name, ret);
6033 goto error;
6034 }
6035
6036 IWL_DEBUG_INFO("Got firmware '%s' file (%zd bytes) from disk\n",
6037 name, ucode_raw->size);
6038
6039 /* Make sure that we got at least our header! */
6040 if (ucode_raw->size < sizeof(*ucode)) {
6041 IWL_ERROR("File size way too small!\n");
6042 ret = -EINVAL;
6043 goto err_release;
6044 }
6045
6046 /* Data from ucode file: header followed by uCode images */
6047 ucode = (void *)ucode_raw->data;
6048
6049 ver = le32_to_cpu(ucode->ver);
6050 inst_size = le32_to_cpu(ucode->inst_size);
6051 data_size = le32_to_cpu(ucode->data_size);
6052 init_size = le32_to_cpu(ucode->init_size);
6053 init_data_size = le32_to_cpu(ucode->init_data_size);
6054 boot_size = le32_to_cpu(ucode->boot_size);
6055
6056 IWL_DEBUG_INFO("f/w package hdr ucode version = 0x%x\n", ver);
6057 IWL_DEBUG_INFO("f/w package hdr runtime inst size = %u\n",
6058 inst_size);
6059 IWL_DEBUG_INFO("f/w package hdr runtime data size = %u\n",
6060 data_size);
6061 IWL_DEBUG_INFO("f/w package hdr init inst size = %u\n",
6062 init_size);
6063 IWL_DEBUG_INFO("f/w package hdr init data size = %u\n",
6064 init_data_size);
6065 IWL_DEBUG_INFO("f/w package hdr boot inst size = %u\n",
6066 boot_size);
6067
6068 /* Verify size of file vs. image size info in file's header */
6069 if (ucode_raw->size < sizeof(*ucode) +
6070 inst_size + data_size + init_size +
6071 init_data_size + boot_size) {
6072
6073 IWL_DEBUG_INFO("uCode file size %d too small\n",
6074 (int)ucode_raw->size);
6075 ret = -EINVAL;
6076 goto err_release;
6077 }
6078
6079 /* Verify that uCode images will fit in card's SRAM */
6080 if (inst_size > IWL_MAX_INST_SIZE) {
6081 IWL_DEBUG_INFO("uCode instr len %d too large to fit in\n",
6082 inst_size);
6083 ret = -EINVAL;
6084 goto err_release;
6085 }
6086
6087 if (data_size > IWL_MAX_DATA_SIZE) {
6088 IWL_DEBUG_INFO("uCode data len %d too large to fit in\n",
6089 data_size);
6090 ret = -EINVAL;
6091 goto err_release;
6092 }
6093 if (init_size > IWL_MAX_INST_SIZE) {
6094 IWL_DEBUG_INFO
6095 ("uCode init instr len %d too large to fit in\n",
6096 init_size);
6097 ret = -EINVAL;
6098 goto err_release;
6099 }
6100 if (init_data_size > IWL_MAX_DATA_SIZE) {
6101 IWL_DEBUG_INFO
6102 ("uCode init data len %d too large to fit in\n",
6103 init_data_size);
6104 ret = -EINVAL;
6105 goto err_release;
6106 }
6107 if (boot_size > IWL_MAX_BSM_SIZE) {
6108 IWL_DEBUG_INFO
6109 ("uCode boot instr len %d too large to fit in\n",
6110 boot_size);
6111 ret = -EINVAL;
6112 goto err_release;
6113 }
6114
6115 /* Allocate ucode buffers for card's bus-master loading ... */
6116
6117 /* Runtime instructions and 2 copies of data:
6118 * 1) unmodified from disk
6119 * 2) backup cache for save/restore during power-downs */
6120 priv->ucode_code.len = inst_size;
6121 iwl_alloc_fw_desc(priv->pci_dev, &priv->ucode_code);
6122
6123 priv->ucode_data.len = data_size;
6124 iwl_alloc_fw_desc(priv->pci_dev, &priv->ucode_data);
6125
6126 priv->ucode_data_backup.len = data_size;
6127 iwl_alloc_fw_desc(priv->pci_dev, &priv->ucode_data_backup);
6128
6129 /* Initialization instructions and data */
6130 if (init_size && init_data_size) {
6131 priv->ucode_init.len = init_size;
6132 iwl_alloc_fw_desc(priv->pci_dev, &priv->ucode_init);
6133
6134 priv->ucode_init_data.len = init_data_size;
6135 iwl_alloc_fw_desc(priv->pci_dev, &priv->ucode_init_data);
6136
6137 if (!priv->ucode_init.v_addr || !priv->ucode_init_data.v_addr)
6138 goto err_pci_alloc;
6139 }
6140
6141 /* Bootstrap (instructions only, no data) */
6142 if (boot_size) {
6143 priv->ucode_boot.len = boot_size;
6144 iwl_alloc_fw_desc(priv->pci_dev, &priv->ucode_boot);
6145
6146 if (!priv->ucode_boot.v_addr)
6147 goto err_pci_alloc;
6148 }
6149
6150 /* Copy images into buffers for card's bus-master reads ... */
6151
6152 /* Runtime instructions (first block of data in file) */
6153 src = &ucode->data[0];
6154 len = priv->ucode_code.len;
6155 IWL_DEBUG_INFO("Copying (but not loading) uCode instr len %Zd\n", len);
6156 memcpy(priv->ucode_code.v_addr, src, len);
6157 IWL_DEBUG_INFO("uCode instr buf vaddr = 0x%p, paddr = 0x%08x\n",
6158 priv->ucode_code.v_addr, (u32)priv->ucode_code.p_addr);
6159
6160 /* Runtime data (2nd block)
6161 * NOTE: Copy into backup buffer will be done in iwl4965_up() */
6162 src = &ucode->data[inst_size];
6163 len = priv->ucode_data.len;
6164 IWL_DEBUG_INFO("Copying (but not loading) uCode data len %Zd\n", len);
6165 memcpy(priv->ucode_data.v_addr, src, len);
6166 memcpy(priv->ucode_data_backup.v_addr, src, len);
6167
6168 /* Initialization instructions (3rd block) */
6169 if (init_size) {
6170 src = &ucode->data[inst_size + data_size];
6171 len = priv->ucode_init.len;
6172 IWL_DEBUG_INFO("Copying (but not loading) init instr len %Zd\n",
6173 len);
6174 memcpy(priv->ucode_init.v_addr, src, len);
6175 }
6176
6177 /* Initialization data (4th block) */
6178 if (init_data_size) {
6179 src = &ucode->data[inst_size + data_size + init_size];
6180 len = priv->ucode_init_data.len;
6181 IWL_DEBUG_INFO("Copying (but not loading) init data len %Zd\n",
6182 len);
6183 memcpy(priv->ucode_init_data.v_addr, src, len);
6184 }
6185
6186 /* Bootstrap instructions (5th block) */
6187 src = &ucode->data[inst_size + data_size + init_size + init_data_size];
6188 len = priv->ucode_boot.len;
6189 IWL_DEBUG_INFO("Copying (but not loading) boot instr len %Zd\n", len);
6190 memcpy(priv->ucode_boot.v_addr, src, len);
6191
6192 /* We have our copies now, allow OS release its copies */
6193 release_firmware(ucode_raw);
6194 return 0;
6195
6196 err_pci_alloc:
6197 IWL_ERROR("failed to allocate pci memory\n");
6198 ret = -ENOMEM;
6199 iwl4965_dealloc_ucode_pci(priv);
6200
6201 err_release:
6202 release_firmware(ucode_raw);
6203
6204 error:
6205 return ret;
6206 }
6207
6208
6209 /**
6210 * iwl4965_set_ucode_ptrs - Set uCode address location
6211 *
6212 * Tell initialization uCode where to find runtime uCode.
6213 *
6214 * BSM registers initially contain pointers to initialization uCode.
6215 * We need to replace them to load runtime uCode inst and data,
6216 * and to save runtime data when powering down.
6217 */
6218 static int iwl4965_set_ucode_ptrs(struct iwl4965_priv *priv)
6219 {
6220 dma_addr_t pinst;
6221 dma_addr_t pdata;
6222 int rc = 0;
6223 unsigned long flags;
6224
6225 /* bits 35:4 for 4965 */
6226 pinst = priv->ucode_code.p_addr >> 4;
6227 pdata = priv->ucode_data_backup.p_addr >> 4;
6228
6229 spin_lock_irqsave(&priv->lock, flags);
6230 rc = iwl4965_grab_nic_access(priv);
6231 if (rc) {
6232 spin_unlock_irqrestore(&priv->lock, flags);
6233 return rc;
6234 }
6235
6236 /* Tell bootstrap uCode where to find image to load */
6237 iwl4965_write_prph(priv, BSM_DRAM_INST_PTR_REG, pinst);
6238 iwl4965_write_prph(priv, BSM_DRAM_DATA_PTR_REG, pdata);
6239 iwl4965_write_prph(priv, BSM_DRAM_DATA_BYTECOUNT_REG,
6240 priv->ucode_data.len);
6241
6242 /* Inst bytecount must be last to set up, bit 31 signals uCode
6243 * that all new ptr/size info is in place */
6244 iwl4965_write_prph(priv, BSM_DRAM_INST_BYTECOUNT_REG,
6245 priv->ucode_code.len | BSM_DRAM_INST_LOAD);
6246
6247 iwl4965_release_nic_access(priv);
6248
6249 spin_unlock_irqrestore(&priv->lock, flags);
6250
6251 IWL_DEBUG_INFO("Runtime uCode pointers are set.\n");
6252
6253 return rc;
6254 }
6255
6256 /**
6257 * iwl4965_init_alive_start - Called after REPLY_ALIVE notification received
6258 *
6259 * Called after REPLY_ALIVE notification received from "initialize" uCode.
6260 *
6261 * The 4965 "initialize" ALIVE reply contains calibration data for:
6262 * Voltage, temperature, and MIMO tx gain correction, now stored in priv
6263 * (3945 does not contain this data).
6264 *
6265 * Tell "initialize" uCode to go ahead and load the runtime uCode.
6266 */
6267 static void iwl4965_init_alive_start(struct iwl4965_priv *priv)
6268 {
6269 /* Check alive response for "valid" sign from uCode */
6270 if (priv->card_alive_init.is_valid != UCODE_VALID_OK) {
6271 /* We had an error bringing up the hardware, so take it
6272 * all the way back down so we can try again */
6273 IWL_DEBUG_INFO("Initialize Alive failed.\n");
6274 goto restart;
6275 }
6276
6277 /* Bootstrap uCode has loaded initialize uCode ... verify inst image.
6278 * This is a paranoid check, because we would not have gotten the
6279 * "initialize" alive if code weren't properly loaded. */
6280 if (iwl4965_verify_ucode(priv)) {
6281 /* Runtime instruction load was bad;
6282 * take it all the way back down so we can try again */
6283 IWL_DEBUG_INFO("Bad \"initialize\" uCode load.\n");
6284 goto restart;
6285 }
6286
6287 /* Calculate temperature */
6288 priv->temperature = iwl4965_get_temperature(priv);
6289
6290 /* Send pointers to protocol/runtime uCode image ... init code will
6291 * load and launch runtime uCode, which will send us another "Alive"
6292 * notification. */
6293 IWL_DEBUG_INFO("Initialization Alive received.\n");
6294 if (iwl4965_set_ucode_ptrs(priv)) {
6295 /* Runtime instruction load won't happen;
6296 * take it all the way back down so we can try again */
6297 IWL_DEBUG_INFO("Couldn't set up uCode pointers.\n");
6298 goto restart;
6299 }
6300 return;
6301
6302 restart:
6303 queue_work(priv->workqueue, &priv->restart);
6304 }
6305
6306
6307 /**
6308 * iwl4965_alive_start - called after REPLY_ALIVE notification received
6309 * from protocol/runtime uCode (initialization uCode's
6310 * Alive gets handled by iwl4965_init_alive_start()).
6311 */
6312 static void iwl4965_alive_start(struct iwl4965_priv *priv)
6313 {
6314 int rc = 0;
6315
6316 IWL_DEBUG_INFO("Runtime Alive received.\n");
6317
6318 if (priv->card_alive.is_valid != UCODE_VALID_OK) {
6319 /* We had an error bringing up the hardware, so take it
6320 * all the way back down so we can try again */
6321 IWL_DEBUG_INFO("Alive failed.\n");
6322 goto restart;
6323 }
6324
6325 /* Initialize uCode has loaded Runtime uCode ... verify inst image.
6326 * This is a paranoid check, because we would not have gotten the
6327 * "runtime" alive if code weren't properly loaded. */
6328 if (iwl4965_verify_ucode(priv)) {
6329 /* Runtime instruction load was bad;
6330 * take it all the way back down so we can try again */
6331 IWL_DEBUG_INFO("Bad runtime uCode load.\n");
6332 goto restart;
6333 }
6334
6335 iwl4965_clear_stations_table(priv);
6336
6337 rc = iwl4965_alive_notify(priv);
6338 if (rc) {
6339 IWL_WARNING("Could not complete ALIVE transition [ntf]: %d\n",
6340 rc);
6341 goto restart;
6342 }
6343
6344 /* After the ALIVE response, we can send host commands to 4965 uCode */
6345 set_bit(STATUS_ALIVE, &priv->status);
6346
6347 /* Clear out the uCode error bit if it is set */
6348 clear_bit(STATUS_FW_ERROR, &priv->status);
6349
6350 if (iwl4965_is_rfkill(priv))
6351 return;
6352
6353 ieee80211_start_queues(priv->hw);
6354
6355 priv->active_rate = priv->rates_mask;
6356 priv->active_rate_basic = priv->rates_mask & IWL_BASIC_RATES_MASK;
6357
6358 iwl4965_send_power_mode(priv, IWL_POWER_LEVEL(priv->power_mode));
6359
6360 if (iwl4965_is_associated(priv)) {
6361 struct iwl4965_rxon_cmd *active_rxon =
6362 (struct iwl4965_rxon_cmd *)(&priv->active_rxon);
6363
6364 memcpy(&priv->staging_rxon, &priv->active_rxon,
6365 sizeof(priv->staging_rxon));
6366 active_rxon->filter_flags &= ~RXON_FILTER_ASSOC_MSK;
6367 } else {
6368 /* Initialize our rx_config data */
6369 iwl4965_connection_init_rx_config(priv);
6370 memcpy(priv->staging_rxon.node_addr, priv->mac_addr, ETH_ALEN);
6371 }
6372
6373 /* Configure Bluetooth device coexistence support */
6374 iwl4965_send_bt_config(priv);
6375
6376 /* Configure the adapter for unassociated operation */
6377 iwl4965_commit_rxon(priv);
6378
6379 /* At this point, the NIC is initialized and operational */
6380 priv->notif_missed_beacons = 0;
6381 set_bit(STATUS_READY, &priv->status);
6382
6383 iwl4965_rf_kill_ct_config(priv);
6384
6385 IWL_DEBUG_INFO("ALIVE processing complete.\n");
6386 wake_up_interruptible(&priv->wait_command_queue);
6387
6388 if (priv->error_recovering)
6389 iwl4965_error_recovery(priv);
6390
6391 return;
6392
6393 restart:
6394 queue_work(priv->workqueue, &priv->restart);
6395 }
6396
6397 static void iwl4965_cancel_deferred_work(struct iwl4965_priv *priv);
6398
6399 static void __iwl4965_down(struct iwl4965_priv *priv)
6400 {
6401 unsigned long flags;
6402 int exit_pending = test_bit(STATUS_EXIT_PENDING, &priv->status);
6403 struct ieee80211_conf *conf = NULL;
6404
6405 IWL_DEBUG_INFO(DRV_NAME " is going down\n");
6406
6407 conf = ieee80211_get_hw_conf(priv->hw);
6408
6409 if (!exit_pending)
6410 set_bit(STATUS_EXIT_PENDING, &priv->status);
6411
6412 iwl4965_clear_stations_table(priv);
6413
6414 /* Unblock any waiting calls */
6415 wake_up_interruptible_all(&priv->wait_command_queue);
6416
6417 /* Wipe out the EXIT_PENDING status bit if we are not actually
6418 * exiting the module */
6419 if (!exit_pending)
6420 clear_bit(STATUS_EXIT_PENDING, &priv->status);
6421
6422 /* stop and reset the on-board processor */
6423 iwl4965_write32(priv, CSR_RESET, CSR_RESET_REG_FLAG_NEVO_RESET);
6424
6425 /* tell the device to stop sending interrupts */
6426 iwl4965_disable_interrupts(priv);
6427
6428 if (priv->mac80211_registered)
6429 ieee80211_stop_queues(priv->hw);
6430
6431 /* If we have not previously called iwl4965_init() then
6432 * clear all bits but the RF Kill and SUSPEND bits and return */
6433 if (!iwl4965_is_init(priv)) {
6434 priv->status = test_bit(STATUS_RF_KILL_HW, &priv->status) <<
6435 STATUS_RF_KILL_HW |
6436 test_bit(STATUS_RF_KILL_SW, &priv->status) <<
6437 STATUS_RF_KILL_SW |
6438 test_bit(STATUS_GEO_CONFIGURED, &priv->status) <<
6439 STATUS_GEO_CONFIGURED |
6440 test_bit(STATUS_IN_SUSPEND, &priv->status) <<
6441 STATUS_IN_SUSPEND;
6442 goto exit;
6443 }
6444
6445 /* ...otherwise clear out all the status bits but the RF Kill and
6446 * SUSPEND bits and continue taking the NIC down. */
6447 priv->status &= test_bit(STATUS_RF_KILL_HW, &priv->status) <<
6448 STATUS_RF_KILL_HW |
6449 test_bit(STATUS_RF_KILL_SW, &priv->status) <<
6450 STATUS_RF_KILL_SW |
6451 test_bit(STATUS_GEO_CONFIGURED, &priv->status) <<
6452 STATUS_GEO_CONFIGURED |
6453 test_bit(STATUS_IN_SUSPEND, &priv->status) <<
6454 STATUS_IN_SUSPEND |
6455 test_bit(STATUS_FW_ERROR, &priv->status) <<
6456 STATUS_FW_ERROR;
6457
6458 spin_lock_irqsave(&priv->lock, flags);
6459 iwl4965_clear_bit(priv, CSR_GP_CNTRL,
6460 CSR_GP_CNTRL_REG_FLAG_MAC_ACCESS_REQ);
6461 spin_unlock_irqrestore(&priv->lock, flags);
6462
6463 iwl4965_hw_txq_ctx_stop(priv);
6464 iwl4965_hw_rxq_stop(priv);
6465
6466 spin_lock_irqsave(&priv->lock, flags);
6467 if (!iwl4965_grab_nic_access(priv)) {
6468 iwl4965_write_prph(priv, APMG_CLK_DIS_REG,
6469 APMG_CLK_VAL_DMA_CLK_RQT);
6470 iwl4965_release_nic_access(priv);
6471 }
6472 spin_unlock_irqrestore(&priv->lock, flags);
6473
6474 udelay(5);
6475
6476 iwl4965_hw_nic_stop_master(priv);
6477 iwl4965_set_bit(priv, CSR_RESET, CSR_RESET_REG_FLAG_SW_RESET);
6478 iwl4965_hw_nic_reset(priv);
6479
6480 exit:
6481 memset(&priv->card_alive, 0, sizeof(struct iwl4965_alive_resp));
6482
6483 if (priv->ibss_beacon)
6484 dev_kfree_skb(priv->ibss_beacon);
6485 priv->ibss_beacon = NULL;
6486
6487 /* clear out any free frames */
6488 iwl4965_clear_free_frames(priv);
6489 }
6490
6491 static void iwl4965_down(struct iwl4965_priv *priv)
6492 {
6493 mutex_lock(&priv->mutex);
6494 __iwl4965_down(priv);
6495 mutex_unlock(&priv->mutex);
6496
6497 iwl4965_cancel_deferred_work(priv);
6498 }
6499
6500 #define MAX_HW_RESTARTS 5
6501
6502 static int __iwl4965_up(struct iwl4965_priv *priv)
6503 {
6504 int rc, i;
6505
6506 if (test_bit(STATUS_EXIT_PENDING, &priv->status)) {
6507 IWL_WARNING("Exit pending; will not bring the NIC up\n");
6508 return -EIO;
6509 }
6510
6511 if (test_bit(STATUS_RF_KILL_SW, &priv->status)) {
6512 IWL_WARNING("Radio disabled by SW RF kill (module "
6513 "parameter)\n");
6514 return -ENODEV;
6515 }
6516
6517 if (!priv->ucode_data_backup.v_addr || !priv->ucode_data.v_addr) {
6518 IWL_ERROR("ucode not available for device bringup\n");
6519 return -EIO;
6520 }
6521
6522 /* If platform's RF_KILL switch is NOT set to KILL */
6523 if (iwl4965_read32(priv, CSR_GP_CNTRL) &
6524 CSR_GP_CNTRL_REG_FLAG_HW_RF_KILL_SW)
6525 clear_bit(STATUS_RF_KILL_HW, &priv->status);
6526 else {
6527 set_bit(STATUS_RF_KILL_HW, &priv->status);
6528 if (!test_bit(STATUS_IN_SUSPEND, &priv->status)) {
6529 IWL_WARNING("Radio disabled by HW RF Kill switch\n");
6530 return -ENODEV;
6531 }
6532 }
6533
6534 iwl4965_write32(priv, CSR_INT, 0xFFFFFFFF);
6535
6536 rc = iwl4965_hw_nic_init(priv);
6537 if (rc) {
6538 IWL_ERROR("Unable to int nic\n");
6539 return rc;
6540 }
6541
6542 /* make sure rfkill handshake bits are cleared */
6543 iwl4965_write32(priv, CSR_UCODE_DRV_GP1_CLR, CSR_UCODE_SW_BIT_RFKILL);
6544 iwl4965_write32(priv, CSR_UCODE_DRV_GP1_CLR,
6545 CSR_UCODE_DRV_GP1_BIT_CMD_BLOCKED);
6546
6547 /* clear (again), then enable host interrupts */
6548 iwl4965_write32(priv, CSR_INT, 0xFFFFFFFF);
6549 iwl4965_enable_interrupts(priv);
6550
6551 /* really make sure rfkill handshake bits are cleared */
6552 iwl4965_write32(priv, CSR_UCODE_DRV_GP1_CLR, CSR_UCODE_SW_BIT_RFKILL);
6553 iwl4965_write32(priv, CSR_UCODE_DRV_GP1_CLR, CSR_UCODE_SW_BIT_RFKILL);
6554
6555 /* Copy original ucode data image from disk into backup cache.
6556 * This will be used to initialize the on-board processor's
6557 * data SRAM for a clean start when the runtime program first loads. */
6558 memcpy(priv->ucode_data_backup.v_addr, priv->ucode_data.v_addr,
6559 priv->ucode_data.len);
6560
6561 /* We return success when we resume from suspend and rf_kill is on. */
6562 if (test_bit(STATUS_RF_KILL_HW, &priv->status))
6563 return 0;
6564
6565 for (i = 0; i < MAX_HW_RESTARTS; i++) {
6566
6567 iwl4965_clear_stations_table(priv);
6568
6569 /* load bootstrap state machine,
6570 * load bootstrap program into processor's memory,
6571 * prepare to load the "initialize" uCode */
6572 rc = iwl4965_load_bsm(priv);
6573
6574 if (rc) {
6575 IWL_ERROR("Unable to set up bootstrap uCode: %d\n", rc);
6576 continue;
6577 }
6578
6579 /* start card; "initialize" will load runtime ucode */
6580 iwl4965_nic_start(priv);
6581
6582 IWL_DEBUG_INFO(DRV_NAME " is coming up\n");
6583
6584 return 0;
6585 }
6586
6587 set_bit(STATUS_EXIT_PENDING, &priv->status);
6588 __iwl4965_down(priv);
6589
6590 /* tried to restart and config the device for as long as our
6591 * patience could withstand */
6592 IWL_ERROR("Unable to initialize device after %d attempts.\n", i);
6593 return -EIO;
6594 }
6595
6596
6597 /*****************************************************************************
6598 *
6599 * Workqueue callbacks
6600 *
6601 *****************************************************************************/
6602
6603 static void iwl4965_bg_init_alive_start(struct work_struct *data)
6604 {
6605 struct iwl4965_priv *priv =
6606 container_of(data, struct iwl4965_priv, init_alive_start.work);
6607
6608 if (test_bit(STATUS_EXIT_PENDING, &priv->status))
6609 return;
6610
6611 mutex_lock(&priv->mutex);
6612 iwl4965_init_alive_start(priv);
6613 mutex_unlock(&priv->mutex);
6614 }
6615
6616 static void iwl4965_bg_alive_start(struct work_struct *data)
6617 {
6618 struct iwl4965_priv *priv =
6619 container_of(data, struct iwl4965_priv, alive_start.work);
6620
6621 if (test_bit(STATUS_EXIT_PENDING, &priv->status))
6622 return;
6623
6624 mutex_lock(&priv->mutex);
6625 iwl4965_alive_start(priv);
6626 mutex_unlock(&priv->mutex);
6627 }
6628
6629 static void iwl4965_bg_rf_kill(struct work_struct *work)
6630 {
6631 struct iwl4965_priv *priv = container_of(work, struct iwl4965_priv, rf_kill);
6632
6633 wake_up_interruptible(&priv->wait_command_queue);
6634
6635 if (test_bit(STATUS_EXIT_PENDING, &priv->status))
6636 return;
6637
6638 mutex_lock(&priv->mutex);
6639
6640 if (!iwl4965_is_rfkill(priv)) {
6641 IWL_DEBUG(IWL_DL_INFO | IWL_DL_RF_KILL,
6642 "HW and/or SW RF Kill no longer active, restarting "
6643 "device\n");
6644 if (!test_bit(STATUS_EXIT_PENDING, &priv->status))
6645 queue_work(priv->workqueue, &priv->restart);
6646 } else {
6647
6648 if (!test_bit(STATUS_RF_KILL_HW, &priv->status))
6649 IWL_DEBUG_RF_KILL("Can not turn radio back on - "
6650 "disabled by SW switch\n");
6651 else
6652 IWL_WARNING("Radio Frequency Kill Switch is On:\n"
6653 "Kill switch must be turned off for "
6654 "wireless networking to work.\n");
6655 }
6656 mutex_unlock(&priv->mutex);
6657 }
6658
6659 #define IWL_SCAN_CHECK_WATCHDOG (7 * HZ)
6660
6661 static void iwl4965_bg_scan_check(struct work_struct *data)
6662 {
6663 struct iwl4965_priv *priv =
6664 container_of(data, struct iwl4965_priv, scan_check.work);
6665
6666 if (test_bit(STATUS_EXIT_PENDING, &priv->status))
6667 return;
6668
6669 mutex_lock(&priv->mutex);
6670 if (test_bit(STATUS_SCANNING, &priv->status) ||
6671 test_bit(STATUS_SCAN_ABORTING, &priv->status)) {
6672 IWL_DEBUG(IWL_DL_INFO | IWL_DL_SCAN,
6673 "Scan completion watchdog resetting adapter (%dms)\n",
6674 jiffies_to_msecs(IWL_SCAN_CHECK_WATCHDOG));
6675
6676 if (!test_bit(STATUS_EXIT_PENDING, &priv->status))
6677 iwl4965_send_scan_abort(priv);
6678 }
6679 mutex_unlock(&priv->mutex);
6680 }
6681
6682 static void iwl4965_bg_request_scan(struct work_struct *data)
6683 {
6684 struct iwl4965_priv *priv =
6685 container_of(data, struct iwl4965_priv, request_scan);
6686 struct iwl4965_host_cmd cmd = {
6687 .id = REPLY_SCAN_CMD,
6688 .len = sizeof(struct iwl4965_scan_cmd),
6689 .meta.flags = CMD_SIZE_HUGE,
6690 };
6691 int rc = 0;
6692 struct iwl4965_scan_cmd *scan;
6693 struct ieee80211_conf *conf = NULL;
6694 u16 cmd_len;
6695 enum ieee80211_band band;
6696 u8 direct_mask;
6697
6698 conf = ieee80211_get_hw_conf(priv->hw);
6699
6700 mutex_lock(&priv->mutex);
6701
6702 if (!iwl4965_is_ready(priv)) {
6703 IWL_WARNING("request scan called when driver not ready.\n");
6704 goto done;
6705 }
6706
6707 /* Make sure the scan wasn't cancelled before this queued work
6708 * was given the chance to run... */
6709 if (!test_bit(STATUS_SCANNING, &priv->status))
6710 goto done;
6711
6712 /* This should never be called or scheduled if there is currently
6713 * a scan active in the hardware. */
6714 if (test_bit(STATUS_SCAN_HW, &priv->status)) {
6715 IWL_DEBUG_INFO("Multiple concurrent scan requests in parallel. "
6716 "Ignoring second request.\n");
6717 rc = -EIO;
6718 goto done;
6719 }
6720
6721 if (test_bit(STATUS_EXIT_PENDING, &priv->status)) {
6722 IWL_DEBUG_SCAN("Aborting scan due to device shutdown\n");
6723 goto done;
6724 }
6725
6726 if (test_bit(STATUS_SCAN_ABORTING, &priv->status)) {
6727 IWL_DEBUG_HC("Scan request while abort pending. Queuing.\n");
6728 goto done;
6729 }
6730
6731 if (iwl4965_is_rfkill(priv)) {
6732 IWL_DEBUG_HC("Aborting scan due to RF Kill activation\n");
6733 goto done;
6734 }
6735
6736 if (!test_bit(STATUS_READY, &priv->status)) {
6737 IWL_DEBUG_HC("Scan request while uninitialized. Queuing.\n");
6738 goto done;
6739 }
6740
6741 if (!priv->scan_bands) {
6742 IWL_DEBUG_HC("Aborting scan due to no requested bands\n");
6743 goto done;
6744 }
6745
6746 if (!priv->scan) {
6747 priv->scan = kmalloc(sizeof(struct iwl4965_scan_cmd) +
6748 IWL_MAX_SCAN_SIZE, GFP_KERNEL);
6749 if (!priv->scan) {
6750 rc = -ENOMEM;
6751 goto done;
6752 }
6753 }
6754 scan = priv->scan;
6755 memset(scan, 0, sizeof(struct iwl4965_scan_cmd) + IWL_MAX_SCAN_SIZE);
6756
6757 scan->quiet_plcp_th = IWL_PLCP_QUIET_THRESH;
6758 scan->quiet_time = IWL_ACTIVE_QUIET_TIME;
6759
6760 if (iwl4965_is_associated(priv)) {
6761 u16 interval = 0;
6762 u32 extra;
6763 u32 suspend_time = 100;
6764 u32 scan_suspend_time = 100;
6765 unsigned long flags;
6766
6767 IWL_DEBUG_INFO("Scanning while associated...\n");
6768
6769 spin_lock_irqsave(&priv->lock, flags);
6770 interval = priv->beacon_int;
6771 spin_unlock_irqrestore(&priv->lock, flags);
6772
6773 scan->suspend_time = 0;
6774 scan->max_out_time = cpu_to_le32(200 * 1024);
6775 if (!interval)
6776 interval = suspend_time;
6777
6778 extra = (suspend_time / interval) << 22;
6779 scan_suspend_time = (extra |
6780 ((suspend_time % interval) * 1024));
6781 scan->suspend_time = cpu_to_le32(scan_suspend_time);
6782 IWL_DEBUG_SCAN("suspend_time 0x%X beacon interval %d\n",
6783 scan_suspend_time, interval);
6784 }
6785
6786 /* We should add the ability for user to lock to PASSIVE ONLY */
6787 if (priv->one_direct_scan) {
6788 IWL_DEBUG_SCAN
6789 ("Kicking off one direct scan for '%s'\n",
6790 iwl4965_escape_essid(priv->direct_ssid,
6791 priv->direct_ssid_len));
6792 scan->direct_scan[0].id = WLAN_EID_SSID;
6793 scan->direct_scan[0].len = priv->direct_ssid_len;
6794 memcpy(scan->direct_scan[0].ssid,
6795 priv->direct_ssid, priv->direct_ssid_len);
6796 direct_mask = 1;
6797 } else if (!iwl4965_is_associated(priv) && priv->essid_len) {
6798 scan->direct_scan[0].id = WLAN_EID_SSID;
6799 scan->direct_scan[0].len = priv->essid_len;
6800 memcpy(scan->direct_scan[0].ssid, priv->essid, priv->essid_len);
6801 direct_mask = 1;
6802 } else
6803 direct_mask = 0;
6804
6805 scan->tx_cmd.tx_flags = TX_CMD_FLG_SEQ_CTL_MSK;
6806 scan->tx_cmd.sta_id = priv->hw_setting.bcast_sta_id;
6807 scan->tx_cmd.stop_time.life_time = TX_CMD_LIFE_TIME_INFINITE;
6808
6809
6810 switch (priv->scan_bands) {
6811 case 2:
6812 scan->flags = RXON_FLG_BAND_24G_MSK | RXON_FLG_AUTO_DETECT_MSK;
6813 scan->tx_cmd.rate_n_flags =
6814 iwl4965_hw_set_rate_n_flags(IWL_RATE_1M_PLCP,
6815 RATE_MCS_ANT_B_MSK|RATE_MCS_CCK_MSK);
6816
6817 scan->good_CRC_th = 0;
6818 band = IEEE80211_BAND_2GHZ;
6819 break;
6820
6821 case 1:
6822 scan->tx_cmd.rate_n_flags =
6823 iwl4965_hw_set_rate_n_flags(IWL_RATE_6M_PLCP,
6824 RATE_MCS_ANT_B_MSK);
6825 scan->good_CRC_th = IWL_GOOD_CRC_TH;
6826 band = IEEE80211_BAND_5GHZ;
6827 break;
6828
6829 default:
6830 IWL_WARNING("Invalid scan band count\n");
6831 goto done;
6832 }
6833
6834 /* We don't build a direct scan probe request; the uCode will do
6835 * that based on the direct_mask added to each channel entry */
6836 cmd_len = iwl4965_fill_probe_req(priv, band,
6837 (struct ieee80211_mgmt *)scan->data,
6838 IWL_MAX_SCAN_SIZE - sizeof(*scan), 0);
6839
6840 scan->tx_cmd.len = cpu_to_le16(cmd_len);
6841 /* select Rx chains */
6842
6843 /* Force use of chains B and C (0x6) for scan Rx.
6844 * Avoid A (0x1) because of its off-channel reception on A-band.
6845 * MIMO is not used here, but value is required to make uCode happy. */
6846 scan->rx_chain = RXON_RX_CHAIN_DRIVER_FORCE_MSK |
6847 cpu_to_le16((0x7 << RXON_RX_CHAIN_VALID_POS) |
6848 (0x6 << RXON_RX_CHAIN_FORCE_SEL_POS) |
6849 (0x7 << RXON_RX_CHAIN_FORCE_MIMO_SEL_POS));
6850
6851 if (priv->iw_mode == IEEE80211_IF_TYPE_MNTR)
6852 scan->filter_flags = RXON_FILTER_PROMISC_MSK;
6853
6854 if (direct_mask)
6855 IWL_DEBUG_SCAN
6856 ("Initiating direct scan for %s.\n",
6857 iwl4965_escape_essid(priv->essid, priv->essid_len));
6858 else
6859 IWL_DEBUG_SCAN("Initiating indirect scan.\n");
6860
6861 scan->channel_count =
6862 iwl4965_get_channels_for_scan(
6863 priv, band, 1, /* active */
6864 direct_mask,
6865 (void *)&scan->data[le16_to_cpu(scan->tx_cmd.len)]);
6866
6867 cmd.len += le16_to_cpu(scan->tx_cmd.len) +
6868 scan->channel_count * sizeof(struct iwl4965_scan_channel);
6869 cmd.data = scan;
6870 scan->len = cpu_to_le16(cmd.len);
6871
6872 set_bit(STATUS_SCAN_HW, &priv->status);
6873 rc = iwl4965_send_cmd_sync(priv, &cmd);
6874 if (rc)
6875 goto done;
6876
6877 queue_delayed_work(priv->workqueue, &priv->scan_check,
6878 IWL_SCAN_CHECK_WATCHDOG);
6879
6880 mutex_unlock(&priv->mutex);
6881 return;
6882
6883 done:
6884 /* inform mac80211 scan aborted */
6885 queue_work(priv->workqueue, &priv->scan_completed);
6886 mutex_unlock(&priv->mutex);
6887 }
6888
6889 static void iwl4965_bg_up(struct work_struct *data)
6890 {
6891 struct iwl4965_priv *priv = container_of(data, struct iwl4965_priv, up);
6892
6893 if (test_bit(STATUS_EXIT_PENDING, &priv->status))
6894 return;
6895
6896 mutex_lock(&priv->mutex);
6897 __iwl4965_up(priv);
6898 mutex_unlock(&priv->mutex);
6899 }
6900
6901 static void iwl4965_bg_restart(struct work_struct *data)
6902 {
6903 struct iwl4965_priv *priv = container_of(data, struct iwl4965_priv, restart);
6904
6905 if (test_bit(STATUS_EXIT_PENDING, &priv->status))
6906 return;
6907
6908 iwl4965_down(priv);
6909 queue_work(priv->workqueue, &priv->up);
6910 }
6911
6912 static void iwl4965_bg_rx_replenish(struct work_struct *data)
6913 {
6914 struct iwl4965_priv *priv =
6915 container_of(data, struct iwl4965_priv, rx_replenish);
6916
6917 if (test_bit(STATUS_EXIT_PENDING, &priv->status))
6918 return;
6919
6920 mutex_lock(&priv->mutex);
6921 iwl4965_rx_replenish(priv);
6922 mutex_unlock(&priv->mutex);
6923 }
6924
6925 #define IWL_DELAY_NEXT_SCAN (HZ*2)
6926
6927 static void iwl4965_bg_post_associate(struct work_struct *data)
6928 {
6929 struct iwl4965_priv *priv = container_of(data, struct iwl4965_priv,
6930 post_associate.work);
6931
6932 int rc = 0;
6933 struct ieee80211_conf *conf = NULL;
6934 DECLARE_MAC_BUF(mac);
6935
6936 if (priv->iw_mode == IEEE80211_IF_TYPE_AP) {
6937 IWL_ERROR("%s Should not be called in AP mode\n", __FUNCTION__);
6938 return;
6939 }
6940
6941 IWL_DEBUG_ASSOC("Associated as %d to: %s\n",
6942 priv->assoc_id,
6943 print_mac(mac, priv->active_rxon.bssid_addr));
6944
6945
6946 if (test_bit(STATUS_EXIT_PENDING, &priv->status))
6947 return;
6948
6949 mutex_lock(&priv->mutex);
6950
6951 if (!priv->vif || !priv->is_open) {
6952 mutex_unlock(&priv->mutex);
6953 return;
6954 }
6955 iwl4965_scan_cancel_timeout(priv, 200);
6956
6957 conf = ieee80211_get_hw_conf(priv->hw);
6958
6959 priv->staging_rxon.filter_flags &= ~RXON_FILTER_ASSOC_MSK;
6960 iwl4965_commit_rxon(priv);
6961
6962 memset(&priv->rxon_timing, 0, sizeof(struct iwl4965_rxon_time_cmd));
6963 iwl4965_setup_rxon_timing(priv);
6964 rc = iwl4965_send_cmd_pdu(priv, REPLY_RXON_TIMING,
6965 sizeof(priv->rxon_timing), &priv->rxon_timing);
6966 if (rc)
6967 IWL_WARNING("REPLY_RXON_TIMING failed - "
6968 "Attempting to continue.\n");
6969
6970 priv->staging_rxon.filter_flags |= RXON_FILTER_ASSOC_MSK;
6971
6972 #ifdef CONFIG_IWL4965_HT
6973 if (priv->current_ht_config.is_ht)
6974 iwl4965_set_rxon_ht(priv, &priv->current_ht_config);
6975 #endif /* CONFIG_IWL4965_HT*/
6976 iwl4965_set_rxon_chain(priv);
6977 priv->staging_rxon.assoc_id = cpu_to_le16(priv->assoc_id);
6978
6979 IWL_DEBUG_ASSOC("assoc id %d beacon interval %d\n",
6980 priv->assoc_id, priv->beacon_int);
6981
6982 if (priv->assoc_capability & WLAN_CAPABILITY_SHORT_PREAMBLE)
6983 priv->staging_rxon.flags |= RXON_FLG_SHORT_PREAMBLE_MSK;
6984 else
6985 priv->staging_rxon.flags &= ~RXON_FLG_SHORT_PREAMBLE_MSK;
6986
6987 if (priv->staging_rxon.flags & RXON_FLG_BAND_24G_MSK) {
6988 if (priv->assoc_capability & WLAN_CAPABILITY_SHORT_SLOT_TIME)
6989 priv->staging_rxon.flags |= RXON_FLG_SHORT_SLOT_MSK;
6990 else
6991 priv->staging_rxon.flags &= ~RXON_FLG_SHORT_SLOT_MSK;
6992
6993 if (priv->iw_mode == IEEE80211_IF_TYPE_IBSS)
6994 priv->staging_rxon.flags &= ~RXON_FLG_SHORT_SLOT_MSK;
6995
6996 }
6997
6998 iwl4965_commit_rxon(priv);
6999
7000 switch (priv->iw_mode) {
7001 case IEEE80211_IF_TYPE_STA:
7002 iwl4965_rate_scale_init(priv->hw, IWL_AP_ID);
7003 break;
7004
7005 case IEEE80211_IF_TYPE_IBSS:
7006
7007 /* clear out the station table */
7008 iwl4965_clear_stations_table(priv);
7009
7010 iwl4965_rxon_add_station(priv, iwl4965_broadcast_addr, 0);
7011 iwl4965_rxon_add_station(priv, priv->bssid, 0);
7012 iwl4965_rate_scale_init(priv->hw, IWL_STA_ID);
7013 iwl4965_send_beacon_cmd(priv);
7014
7015 break;
7016
7017 default:
7018 IWL_ERROR("%s Should not be called in %d mode\n",
7019 __FUNCTION__, priv->iw_mode);
7020 break;
7021 }
7022
7023 iwl4965_sequence_reset(priv);
7024
7025 #ifdef CONFIG_IWL4965_SENSITIVITY
7026 /* Enable Rx differential gain and sensitivity calibrations */
7027 iwl4965_chain_noise_reset(priv);
7028 priv->start_calib = 1;
7029 #endif /* CONFIG_IWL4965_SENSITIVITY */
7030
7031 if (priv->iw_mode == IEEE80211_IF_TYPE_IBSS)
7032 priv->assoc_station_added = 1;
7033
7034 iwl4965_activate_qos(priv, 0);
7035
7036 /* we have just associated, don't start scan too early */
7037 priv->next_scan_jiffies = jiffies + IWL_DELAY_NEXT_SCAN;
7038 mutex_unlock(&priv->mutex);
7039 }
7040
7041 static void iwl4965_bg_abort_scan(struct work_struct *work)
7042 {
7043 struct iwl4965_priv *priv = container_of(work, struct iwl4965_priv, abort_scan);
7044
7045 if (!iwl4965_is_ready(priv))
7046 return;
7047
7048 mutex_lock(&priv->mutex);
7049
7050 set_bit(STATUS_SCAN_ABORTING, &priv->status);
7051 iwl4965_send_scan_abort(priv);
7052
7053 mutex_unlock(&priv->mutex);
7054 }
7055
7056 static int iwl4965_mac_config(struct ieee80211_hw *hw, struct ieee80211_conf *conf);
7057
7058 static void iwl4965_bg_scan_completed(struct work_struct *work)
7059 {
7060 struct iwl4965_priv *priv =
7061 container_of(work, struct iwl4965_priv, scan_completed);
7062
7063 IWL_DEBUG(IWL_DL_INFO | IWL_DL_SCAN, "SCAN complete scan\n");
7064
7065 if (test_bit(STATUS_EXIT_PENDING, &priv->status))
7066 return;
7067
7068 if (test_bit(STATUS_CONF_PENDING, &priv->status))
7069 iwl4965_mac_config(priv->hw, ieee80211_get_hw_conf(priv->hw));
7070
7071 ieee80211_scan_completed(priv->hw);
7072
7073 /* Since setting the TXPOWER may have been deferred while
7074 * performing the scan, fire one off */
7075 mutex_lock(&priv->mutex);
7076 iwl4965_hw_reg_send_txpower(priv);
7077 mutex_unlock(&priv->mutex);
7078 }
7079
7080 /*****************************************************************************
7081 *
7082 * mac80211 entry point functions
7083 *
7084 *****************************************************************************/
7085
7086 #define UCODE_READY_TIMEOUT (2 * HZ)
7087
7088 static int iwl4965_mac_start(struct ieee80211_hw *hw)
7089 {
7090 struct iwl4965_priv *priv = hw->priv;
7091 int ret;
7092
7093 IWL_DEBUG_MAC80211("enter\n");
7094
7095 if (pci_enable_device(priv->pci_dev)) {
7096 IWL_ERROR("Fail to pci_enable_device\n");
7097 return -ENODEV;
7098 }
7099 pci_restore_state(priv->pci_dev);
7100 pci_enable_msi(priv->pci_dev);
7101
7102 ret = request_irq(priv->pci_dev->irq, iwl4965_isr, IRQF_SHARED,
7103 DRV_NAME, priv);
7104 if (ret) {
7105 IWL_ERROR("Error allocating IRQ %d\n", priv->pci_dev->irq);
7106 goto out_disable_msi;
7107 }
7108
7109 /* we should be verifying the device is ready to be opened */
7110 mutex_lock(&priv->mutex);
7111
7112 memset(&priv->staging_rxon, 0, sizeof(struct iwl4965_rxon_cmd));
7113 /* fetch ucode file from disk, alloc and copy to bus-master buffers ...
7114 * ucode filename and max sizes are card-specific. */
7115
7116 if (!priv->ucode_code.len) {
7117 ret = iwl4965_read_ucode(priv);
7118 if (ret) {
7119 IWL_ERROR("Could not read microcode: %d\n", ret);
7120 mutex_unlock(&priv->mutex);
7121 goto out_release_irq;
7122 }
7123 }
7124
7125 ret = __iwl4965_up(priv);
7126
7127 mutex_unlock(&priv->mutex);
7128
7129 if (ret)
7130 goto out_release_irq;
7131
7132 IWL_DEBUG_INFO("Start UP work done.\n");
7133
7134 if (test_bit(STATUS_IN_SUSPEND, &priv->status))
7135 return 0;
7136
7137 /* Wait for START_ALIVE from ucode. Otherwise callbacks from
7138 * mac80211 will not be run successfully. */
7139 ret = wait_event_interruptible_timeout(priv->wait_command_queue,
7140 test_bit(STATUS_READY, &priv->status),
7141 UCODE_READY_TIMEOUT);
7142 if (!ret) {
7143 if (!test_bit(STATUS_READY, &priv->status)) {
7144 IWL_ERROR("Wait for START_ALIVE timeout after %dms.\n",
7145 jiffies_to_msecs(UCODE_READY_TIMEOUT));
7146 ret = -ETIMEDOUT;
7147 goto out_release_irq;
7148 }
7149 }
7150
7151 priv->is_open = 1;
7152 IWL_DEBUG_MAC80211("leave\n");
7153 return 0;
7154
7155 out_release_irq:
7156 free_irq(priv->pci_dev->irq, priv);
7157 out_disable_msi:
7158 pci_disable_msi(priv->pci_dev);
7159 pci_disable_device(priv->pci_dev);
7160 priv->is_open = 0;
7161 IWL_DEBUG_MAC80211("leave - failed\n");
7162 return ret;
7163 }
7164
7165 static void iwl4965_mac_stop(struct ieee80211_hw *hw)
7166 {
7167 struct iwl4965_priv *priv = hw->priv;
7168
7169 IWL_DEBUG_MAC80211("enter\n");
7170
7171 if (!priv->is_open) {
7172 IWL_DEBUG_MAC80211("leave - skip\n");
7173 return;
7174 }
7175
7176 priv->is_open = 0;
7177
7178 if (iwl4965_is_ready_rf(priv)) {
7179 /* stop mac, cancel any scan request and clear
7180 * RXON_FILTER_ASSOC_MSK BIT
7181 */
7182 mutex_lock(&priv->mutex);
7183 iwl4965_scan_cancel_timeout(priv, 100);
7184 cancel_delayed_work(&priv->post_associate);
7185 mutex_unlock(&priv->mutex);
7186 }
7187
7188 iwl4965_down(priv);
7189
7190 flush_workqueue(priv->workqueue);
7191 free_irq(priv->pci_dev->irq, priv);
7192 pci_disable_msi(priv->pci_dev);
7193 pci_save_state(priv->pci_dev);
7194 pci_disable_device(priv->pci_dev);
7195
7196 IWL_DEBUG_MAC80211("leave\n");
7197 }
7198
7199 static int iwl4965_mac_tx(struct ieee80211_hw *hw, struct sk_buff *skb,
7200 struct ieee80211_tx_control *ctl)
7201 {
7202 struct iwl4965_priv *priv = hw->priv;
7203
7204 IWL_DEBUG_MAC80211("enter\n");
7205
7206 if (priv->iw_mode == IEEE80211_IF_TYPE_MNTR) {
7207 IWL_DEBUG_MAC80211("leave - monitor\n");
7208 return -1;
7209 }
7210
7211 IWL_DEBUG_TX("dev->xmit(%d bytes) at rate 0x%02x\n", skb->len,
7212 ctl->tx_rate->bitrate);
7213
7214 if (iwl4965_tx_skb(priv, skb, ctl))
7215 dev_kfree_skb_any(skb);
7216
7217 IWL_DEBUG_MAC80211("leave\n");
7218 return 0;
7219 }
7220
7221 static int iwl4965_mac_add_interface(struct ieee80211_hw *hw,
7222 struct ieee80211_if_init_conf *conf)
7223 {
7224 struct iwl4965_priv *priv = hw->priv;
7225 unsigned long flags;
7226 DECLARE_MAC_BUF(mac);
7227
7228 IWL_DEBUG_MAC80211("enter: type %d\n", conf->type);
7229
7230 if (priv->vif) {
7231 IWL_DEBUG_MAC80211("leave - vif != NULL\n");
7232 return -EOPNOTSUPP;
7233 }
7234
7235 spin_lock_irqsave(&priv->lock, flags);
7236 priv->vif = conf->vif;
7237
7238 spin_unlock_irqrestore(&priv->lock, flags);
7239
7240 mutex_lock(&priv->mutex);
7241
7242 if (conf->mac_addr) {
7243 IWL_DEBUG_MAC80211("Set %s\n", print_mac(mac, conf->mac_addr));
7244 memcpy(priv->mac_addr, conf->mac_addr, ETH_ALEN);
7245 }
7246
7247 if (iwl4965_is_ready(priv))
7248 iwl4965_set_mode(priv, conf->type);
7249
7250 mutex_unlock(&priv->mutex);
7251
7252 IWL_DEBUG_MAC80211("leave\n");
7253 return 0;
7254 }
7255
7256 /**
7257 * iwl4965_mac_config - mac80211 config callback
7258 *
7259 * We ignore conf->flags & IEEE80211_CONF_SHORT_SLOT_TIME since it seems to
7260 * be set inappropriately and the driver currently sets the hardware up to
7261 * use it whenever needed.
7262 */
7263 static int iwl4965_mac_config(struct ieee80211_hw *hw, struct ieee80211_conf *conf)
7264 {
7265 struct iwl4965_priv *priv = hw->priv;
7266 const struct iwl4965_channel_info *ch_info;
7267 unsigned long flags;
7268 int ret = 0;
7269
7270 mutex_lock(&priv->mutex);
7271 IWL_DEBUG_MAC80211("enter to channel %d\n", conf->channel->hw_value);
7272
7273 priv->add_radiotap = !!(conf->flags & IEEE80211_CONF_RADIOTAP);
7274
7275 if (!iwl4965_is_ready(priv)) {
7276 IWL_DEBUG_MAC80211("leave - not ready\n");
7277 ret = -EIO;
7278 goto out;
7279 }
7280
7281 if (unlikely(!iwl4965_param_disable_hw_scan &&
7282 test_bit(STATUS_SCANNING, &priv->status))) {
7283 IWL_DEBUG_MAC80211("leave - scanning\n");
7284 set_bit(STATUS_CONF_PENDING, &priv->status);
7285 mutex_unlock(&priv->mutex);
7286 return 0;
7287 }
7288
7289 spin_lock_irqsave(&priv->lock, flags);
7290
7291 ch_info = iwl4965_get_channel_info(priv, conf->channel->band,
7292 ieee80211_frequency_to_channel(conf->channel->center_freq));
7293 if (!is_channel_valid(ch_info)) {
7294 IWL_DEBUG_MAC80211("leave - invalid channel\n");
7295 spin_unlock_irqrestore(&priv->lock, flags);
7296 ret = -EINVAL;
7297 goto out;
7298 }
7299
7300 #ifdef CONFIG_IWL4965_HT
7301 /* if we are switching from ht to 2.4 clear flags
7302 * from any ht related info since 2.4 does not
7303 * support ht */
7304 if ((le16_to_cpu(priv->staging_rxon.channel) != conf->channel->hw_value)
7305 #ifdef IEEE80211_CONF_CHANNEL_SWITCH
7306 && !(conf->flags & IEEE80211_CONF_CHANNEL_SWITCH)
7307 #endif
7308 )
7309 priv->staging_rxon.flags = 0;
7310 #endif /* CONFIG_IWL4965_HT */
7311
7312 iwl4965_set_rxon_channel(priv, conf->channel->band,
7313 ieee80211_frequency_to_channel(conf->channel->center_freq));
7314
7315 iwl4965_set_flags_for_phymode(priv, conf->channel->band);
7316
7317 /* The list of supported rates and rate mask can be different
7318 * for each band; since the band may have changed, reset
7319 * the rate mask to what mac80211 lists */
7320 iwl4965_set_rate(priv);
7321
7322 spin_unlock_irqrestore(&priv->lock, flags);
7323
7324 #ifdef IEEE80211_CONF_CHANNEL_SWITCH
7325 if (conf->flags & IEEE80211_CONF_CHANNEL_SWITCH) {
7326 iwl4965_hw_channel_switch(priv, conf->channel);
7327 goto out;
7328 }
7329 #endif
7330
7331 iwl4965_radio_kill_sw(priv, !conf->radio_enabled);
7332
7333 if (!conf->radio_enabled) {
7334 IWL_DEBUG_MAC80211("leave - radio disabled\n");
7335 goto out;
7336 }
7337
7338 if (iwl4965_is_rfkill(priv)) {
7339 IWL_DEBUG_MAC80211("leave - RF kill\n");
7340 ret = -EIO;
7341 goto out;
7342 }
7343
7344 iwl4965_set_rate(priv);
7345
7346 if (memcmp(&priv->active_rxon,
7347 &priv->staging_rxon, sizeof(priv->staging_rxon)))
7348 iwl4965_commit_rxon(priv);
7349 else
7350 IWL_DEBUG_INFO("No re-sending same RXON configuration.\n");
7351
7352 IWL_DEBUG_MAC80211("leave\n");
7353
7354 out:
7355 clear_bit(STATUS_CONF_PENDING, &priv->status);
7356 mutex_unlock(&priv->mutex);
7357 return ret;
7358 }
7359
7360 static void iwl4965_config_ap(struct iwl4965_priv *priv)
7361 {
7362 int rc = 0;
7363
7364 if (test_bit(STATUS_EXIT_PENDING, &priv->status))
7365 return;
7366
7367 /* The following should be done only at AP bring up */
7368 if ((priv->active_rxon.filter_flags & RXON_FILTER_ASSOC_MSK) == 0) {
7369
7370 /* RXON - unassoc (to set timing command) */
7371 priv->staging_rxon.filter_flags &= ~RXON_FILTER_ASSOC_MSK;
7372 iwl4965_commit_rxon(priv);
7373
7374 /* RXON Timing */
7375 memset(&priv->rxon_timing, 0, sizeof(struct iwl4965_rxon_time_cmd));
7376 iwl4965_setup_rxon_timing(priv);
7377 rc = iwl4965_send_cmd_pdu(priv, REPLY_RXON_TIMING,
7378 sizeof(priv->rxon_timing), &priv->rxon_timing);
7379 if (rc)
7380 IWL_WARNING("REPLY_RXON_TIMING failed - "
7381 "Attempting to continue.\n");
7382
7383 iwl4965_set_rxon_chain(priv);
7384
7385 /* FIXME: what should be the assoc_id for AP? */
7386 priv->staging_rxon.assoc_id = cpu_to_le16(priv->assoc_id);
7387 if (priv->assoc_capability & WLAN_CAPABILITY_SHORT_PREAMBLE)
7388 priv->staging_rxon.flags |=
7389 RXON_FLG_SHORT_PREAMBLE_MSK;
7390 else
7391 priv->staging_rxon.flags &=
7392 ~RXON_FLG_SHORT_PREAMBLE_MSK;
7393
7394 if (priv->staging_rxon.flags & RXON_FLG_BAND_24G_MSK) {
7395 if (priv->assoc_capability &
7396 WLAN_CAPABILITY_SHORT_SLOT_TIME)
7397 priv->staging_rxon.flags |=
7398 RXON_FLG_SHORT_SLOT_MSK;
7399 else
7400 priv->staging_rxon.flags &=
7401 ~RXON_FLG_SHORT_SLOT_MSK;
7402
7403 if (priv->iw_mode == IEEE80211_IF_TYPE_IBSS)
7404 priv->staging_rxon.flags &=
7405 ~RXON_FLG_SHORT_SLOT_MSK;
7406 }
7407 /* restore RXON assoc */
7408 priv->staging_rxon.filter_flags |= RXON_FILTER_ASSOC_MSK;
7409 iwl4965_commit_rxon(priv);
7410 iwl4965_activate_qos(priv, 1);
7411 iwl4965_rxon_add_station(priv, iwl4965_broadcast_addr, 0);
7412 }
7413 iwl4965_send_beacon_cmd(priv);
7414
7415 /* FIXME - we need to add code here to detect a totally new
7416 * configuration, reset the AP, unassoc, rxon timing, assoc,
7417 * clear sta table, add BCAST sta... */
7418 }
7419
7420 static int iwl4965_mac_config_interface(struct ieee80211_hw *hw,
7421 struct ieee80211_vif *vif,
7422 struct ieee80211_if_conf *conf)
7423 {
7424 struct iwl4965_priv *priv = hw->priv;
7425 DECLARE_MAC_BUF(mac);
7426 unsigned long flags;
7427 int rc;
7428
7429 if (conf == NULL)
7430 return -EIO;
7431
7432 if ((priv->iw_mode == IEEE80211_IF_TYPE_AP) &&
7433 (!conf->beacon || !conf->ssid_len)) {
7434 IWL_DEBUG_MAC80211
7435 ("Leaving in AP mode because HostAPD is not ready.\n");
7436 return 0;
7437 }
7438
7439 if (!iwl4965_is_alive(priv))
7440 return -EAGAIN;
7441
7442 mutex_lock(&priv->mutex);
7443
7444 if (conf->bssid)
7445 IWL_DEBUG_MAC80211("bssid: %s\n",
7446 print_mac(mac, conf->bssid));
7447
7448 /*
7449 * very dubious code was here; the probe filtering flag is never set:
7450 *
7451 if (unlikely(test_bit(STATUS_SCANNING, &priv->status)) &&
7452 !(priv->hw->flags & IEEE80211_HW_NO_PROBE_FILTERING)) {
7453 */
7454 if (unlikely(test_bit(STATUS_SCANNING, &priv->status))) {
7455 IWL_DEBUG_MAC80211("leave - scanning\n");
7456 mutex_unlock(&priv->mutex);
7457 return 0;
7458 }
7459
7460 if (priv->vif != vif) {
7461 IWL_DEBUG_MAC80211("leave - priv->vif != vif\n");
7462 mutex_unlock(&priv->mutex);
7463 return 0;
7464 }
7465
7466 if (priv->iw_mode == IEEE80211_IF_TYPE_AP) {
7467 if (!conf->bssid) {
7468 conf->bssid = priv->mac_addr;
7469 memcpy(priv->bssid, priv->mac_addr, ETH_ALEN);
7470 IWL_DEBUG_MAC80211("bssid was set to: %s\n",
7471 print_mac(mac, conf->bssid));
7472 }
7473 if (priv->ibss_beacon)
7474 dev_kfree_skb(priv->ibss_beacon);
7475
7476 priv->ibss_beacon = conf->beacon;
7477 }
7478
7479 if (iwl4965_is_rfkill(priv))
7480 goto done;
7481
7482 if (conf->bssid && !is_zero_ether_addr(conf->bssid) &&
7483 !is_multicast_ether_addr(conf->bssid)) {
7484 /* If there is currently a HW scan going on in the background
7485 * then we need to cancel it else the RXON below will fail. */
7486 if (iwl4965_scan_cancel_timeout(priv, 100)) {
7487 IWL_WARNING("Aborted scan still in progress "
7488 "after 100ms\n");
7489 IWL_DEBUG_MAC80211("leaving - scan abort failed.\n");
7490 mutex_unlock(&priv->mutex);
7491 return -EAGAIN;
7492 }
7493 memcpy(priv->staging_rxon.bssid_addr, conf->bssid, ETH_ALEN);
7494
7495 /* TODO: Audit driver for usage of these members and see
7496 * if mac80211 deprecates them (priv->bssid looks like it
7497 * shouldn't be there, but I haven't scanned the IBSS code
7498 * to verify) - jpk */
7499 memcpy(priv->bssid, conf->bssid, ETH_ALEN);
7500
7501 if (priv->iw_mode == IEEE80211_IF_TYPE_AP)
7502 iwl4965_config_ap(priv);
7503 else {
7504 rc = iwl4965_commit_rxon(priv);
7505 if ((priv->iw_mode == IEEE80211_IF_TYPE_STA) && rc)
7506 iwl4965_rxon_add_station(
7507 priv, priv->active_rxon.bssid_addr, 1);
7508 }
7509
7510 } else {
7511 iwl4965_scan_cancel_timeout(priv, 100);
7512 priv->staging_rxon.filter_flags &= ~RXON_FILTER_ASSOC_MSK;
7513 iwl4965_commit_rxon(priv);
7514 }
7515
7516 done:
7517 spin_lock_irqsave(&priv->lock, flags);
7518 if (!conf->ssid_len)
7519 memset(priv->essid, 0, IW_ESSID_MAX_SIZE);
7520 else
7521 memcpy(priv->essid, conf->ssid, conf->ssid_len);
7522
7523 priv->essid_len = conf->ssid_len;
7524 spin_unlock_irqrestore(&priv->lock, flags);
7525
7526 IWL_DEBUG_MAC80211("leave\n");
7527 mutex_unlock(&priv->mutex);
7528
7529 return 0;
7530 }
7531
7532 static void iwl4965_configure_filter(struct ieee80211_hw *hw,
7533 unsigned int changed_flags,
7534 unsigned int *total_flags,
7535 int mc_count, struct dev_addr_list *mc_list)
7536 {
7537 /*
7538 * XXX: dummy
7539 * see also iwl4965_connection_init_rx_config
7540 */
7541 *total_flags = 0;
7542 }
7543
7544 static void iwl4965_mac_remove_interface(struct ieee80211_hw *hw,
7545 struct ieee80211_if_init_conf *conf)
7546 {
7547 struct iwl4965_priv *priv = hw->priv;
7548
7549 IWL_DEBUG_MAC80211("enter\n");
7550
7551 mutex_lock(&priv->mutex);
7552
7553 if (iwl4965_is_ready_rf(priv)) {
7554 iwl4965_scan_cancel_timeout(priv, 100);
7555 cancel_delayed_work(&priv->post_associate);
7556 priv->staging_rxon.filter_flags &= ~RXON_FILTER_ASSOC_MSK;
7557 iwl4965_commit_rxon(priv);
7558 }
7559 if (priv->vif == conf->vif) {
7560 priv->vif = NULL;
7561 memset(priv->bssid, 0, ETH_ALEN);
7562 memset(priv->essid, 0, IW_ESSID_MAX_SIZE);
7563 priv->essid_len = 0;
7564 }
7565 mutex_unlock(&priv->mutex);
7566
7567 IWL_DEBUG_MAC80211("leave\n");
7568
7569 }
7570
7571 static void iwl4965_bss_info_changed(struct ieee80211_hw *hw,
7572 struct ieee80211_vif *vif,
7573 struct ieee80211_bss_conf *bss_conf,
7574 u32 changes)
7575 {
7576 struct iwl4965_priv *priv = hw->priv;
7577
7578 if (changes & BSS_CHANGED_ERP_PREAMBLE) {
7579 if (bss_conf->use_short_preamble)
7580 priv->staging_rxon.flags |= RXON_FLG_SHORT_PREAMBLE_MSK;
7581 else
7582 priv->staging_rxon.flags &= ~RXON_FLG_SHORT_PREAMBLE_MSK;
7583 }
7584
7585 if (changes & BSS_CHANGED_ERP_CTS_PROT) {
7586 if (bss_conf->use_cts_prot && (priv->band != IEEE80211_BAND_5GHZ))
7587 priv->staging_rxon.flags |= RXON_FLG_TGG_PROTECT_MSK;
7588 else
7589 priv->staging_rxon.flags &= ~RXON_FLG_TGG_PROTECT_MSK;
7590 }
7591
7592 if (changes & BSS_CHANGED_ASSOC) {
7593 /*
7594 * TODO:
7595 * do stuff instead of sniffing assoc resp
7596 */
7597 }
7598
7599 if (iwl4965_is_associated(priv))
7600 iwl4965_send_rxon_assoc(priv);
7601 }
7602
7603 static int iwl4965_mac_hw_scan(struct ieee80211_hw *hw, u8 *ssid, size_t len)
7604 {
7605 int rc = 0;
7606 unsigned long flags;
7607 struct iwl4965_priv *priv = hw->priv;
7608
7609 IWL_DEBUG_MAC80211("enter\n");
7610
7611 mutex_lock(&priv->mutex);
7612 spin_lock_irqsave(&priv->lock, flags);
7613
7614 if (!iwl4965_is_ready_rf(priv)) {
7615 rc = -EIO;
7616 IWL_DEBUG_MAC80211("leave - not ready or exit pending\n");
7617 goto out_unlock;
7618 }
7619
7620 if (priv->iw_mode == IEEE80211_IF_TYPE_AP) { /* APs don't scan */
7621 rc = -EIO;
7622 IWL_ERROR("ERROR: APs don't scan\n");
7623 goto out_unlock;
7624 }
7625
7626 /* we don't schedule scan within next_scan_jiffies period */
7627 if (priv->next_scan_jiffies &&
7628 time_after(priv->next_scan_jiffies, jiffies)) {
7629 rc = -EAGAIN;
7630 goto out_unlock;
7631 }
7632 /* if we just finished scan ask for delay */
7633 if (priv->last_scan_jiffies && time_after(priv->last_scan_jiffies +
7634 IWL_DELAY_NEXT_SCAN, jiffies)) {
7635 rc = -EAGAIN;
7636 goto out_unlock;
7637 }
7638 if (len) {
7639 IWL_DEBUG_SCAN("direct scan for %s [%d]\n ",
7640 iwl4965_escape_essid(ssid, len), (int)len);
7641
7642 priv->one_direct_scan = 1;
7643 priv->direct_ssid_len = (u8)
7644 min((u8) len, (u8) IW_ESSID_MAX_SIZE);
7645 memcpy(priv->direct_ssid, ssid, priv->direct_ssid_len);
7646 } else
7647 priv->one_direct_scan = 0;
7648
7649 rc = iwl4965_scan_initiate(priv);
7650
7651 IWL_DEBUG_MAC80211("leave\n");
7652
7653 out_unlock:
7654 spin_unlock_irqrestore(&priv->lock, flags);
7655 mutex_unlock(&priv->mutex);
7656
7657 return rc;
7658 }
7659
7660 static int iwl4965_mac_set_key(struct ieee80211_hw *hw, enum set_key_cmd cmd,
7661 const u8 *local_addr, const u8 *addr,
7662 struct ieee80211_key_conf *key)
7663 {
7664 struct iwl4965_priv *priv = hw->priv;
7665 DECLARE_MAC_BUF(mac);
7666 int rc = 0;
7667 u8 sta_id;
7668
7669 IWL_DEBUG_MAC80211("enter\n");
7670
7671 if (!iwl4965_param_hwcrypto) {
7672 IWL_DEBUG_MAC80211("leave - hwcrypto disabled\n");
7673 return -EOPNOTSUPP;
7674 }
7675
7676 if (is_zero_ether_addr(addr))
7677 /* only support pairwise keys */
7678 return -EOPNOTSUPP;
7679
7680 sta_id = iwl4965_hw_find_station(priv, addr);
7681 if (sta_id == IWL_INVALID_STATION) {
7682 IWL_DEBUG_MAC80211("leave - %s not in station map.\n",
7683 print_mac(mac, addr));
7684 return -EINVAL;
7685 }
7686
7687 mutex_lock(&priv->mutex);
7688
7689 iwl4965_scan_cancel_timeout(priv, 100);
7690
7691 switch (cmd) {
7692 case SET_KEY:
7693 rc = iwl4965_update_sta_key_info(priv, key, sta_id);
7694 if (!rc) {
7695 iwl4965_set_rxon_hwcrypto(priv, 1);
7696 iwl4965_commit_rxon(priv);
7697 key->hw_key_idx = sta_id;
7698 IWL_DEBUG_MAC80211("set_key success, using hwcrypto\n");
7699 key->flags |= IEEE80211_KEY_FLAG_GENERATE_IV;
7700 }
7701 break;
7702 case DISABLE_KEY:
7703 rc = iwl4965_clear_sta_key_info(priv, sta_id);
7704 if (!rc) {
7705 iwl4965_set_rxon_hwcrypto(priv, 0);
7706 iwl4965_commit_rxon(priv);
7707 IWL_DEBUG_MAC80211("disable hwcrypto key\n");
7708 }
7709 break;
7710 default:
7711 rc = -EINVAL;
7712 }
7713
7714 IWL_DEBUG_MAC80211("leave\n");
7715 mutex_unlock(&priv->mutex);
7716
7717 return rc;
7718 }
7719
7720 static int iwl4965_mac_conf_tx(struct ieee80211_hw *hw, int queue,
7721 const struct ieee80211_tx_queue_params *params)
7722 {
7723 struct iwl4965_priv *priv = hw->priv;
7724 unsigned long flags;
7725 int q;
7726
7727 IWL_DEBUG_MAC80211("enter\n");
7728
7729 if (!iwl4965_is_ready_rf(priv)) {
7730 IWL_DEBUG_MAC80211("leave - RF not ready\n");
7731 return -EIO;
7732 }
7733
7734 if (queue >= AC_NUM) {
7735 IWL_DEBUG_MAC80211("leave - queue >= AC_NUM %d\n", queue);
7736 return 0;
7737 }
7738
7739 if (!priv->qos_data.qos_enable) {
7740 priv->qos_data.qos_active = 0;
7741 IWL_DEBUG_MAC80211("leave - qos not enabled\n");
7742 return 0;
7743 }
7744 q = AC_NUM - 1 - queue;
7745
7746 spin_lock_irqsave(&priv->lock, flags);
7747
7748 priv->qos_data.def_qos_parm.ac[q].cw_min = cpu_to_le16(params->cw_min);
7749 priv->qos_data.def_qos_parm.ac[q].cw_max = cpu_to_le16(params->cw_max);
7750 priv->qos_data.def_qos_parm.ac[q].aifsn = params->aifs;
7751 priv->qos_data.def_qos_parm.ac[q].edca_txop =
7752 cpu_to_le16((params->txop * 32));
7753
7754 priv->qos_data.def_qos_parm.ac[q].reserved1 = 0;
7755 priv->qos_data.qos_active = 1;
7756
7757 spin_unlock_irqrestore(&priv->lock, flags);
7758
7759 mutex_lock(&priv->mutex);
7760 if (priv->iw_mode == IEEE80211_IF_TYPE_AP)
7761 iwl4965_activate_qos(priv, 1);
7762 else if (priv->assoc_id && iwl4965_is_associated(priv))
7763 iwl4965_activate_qos(priv, 0);
7764
7765 mutex_unlock(&priv->mutex);
7766
7767 IWL_DEBUG_MAC80211("leave\n");
7768 return 0;
7769 }
7770
7771 static int iwl4965_mac_get_tx_stats(struct ieee80211_hw *hw,
7772 struct ieee80211_tx_queue_stats *stats)
7773 {
7774 struct iwl4965_priv *priv = hw->priv;
7775 int i, avail;
7776 struct iwl4965_tx_queue *txq;
7777 struct iwl4965_queue *q;
7778 unsigned long flags;
7779
7780 IWL_DEBUG_MAC80211("enter\n");
7781
7782 if (!iwl4965_is_ready_rf(priv)) {
7783 IWL_DEBUG_MAC80211("leave - RF not ready\n");
7784 return -EIO;
7785 }
7786
7787 spin_lock_irqsave(&priv->lock, flags);
7788
7789 for (i = 0; i < AC_NUM; i++) {
7790 txq = &priv->txq[i];
7791 q = &txq->q;
7792 avail = iwl4965_queue_space(q);
7793
7794 stats->data[i].len = q->n_window - avail;
7795 stats->data[i].limit = q->n_window - q->high_mark;
7796 stats->data[i].count = q->n_window;
7797
7798 }
7799 spin_unlock_irqrestore(&priv->lock, flags);
7800
7801 IWL_DEBUG_MAC80211("leave\n");
7802
7803 return 0;
7804 }
7805
7806 static int iwl4965_mac_get_stats(struct ieee80211_hw *hw,
7807 struct ieee80211_low_level_stats *stats)
7808 {
7809 IWL_DEBUG_MAC80211("enter\n");
7810 IWL_DEBUG_MAC80211("leave\n");
7811
7812 return 0;
7813 }
7814
7815 static u64 iwl4965_mac_get_tsf(struct ieee80211_hw *hw)
7816 {
7817 IWL_DEBUG_MAC80211("enter\n");
7818 IWL_DEBUG_MAC80211("leave\n");
7819
7820 return 0;
7821 }
7822
7823 static void iwl4965_mac_reset_tsf(struct ieee80211_hw *hw)
7824 {
7825 struct iwl4965_priv *priv = hw->priv;
7826 unsigned long flags;
7827
7828 mutex_lock(&priv->mutex);
7829 IWL_DEBUG_MAC80211("enter\n");
7830
7831 priv->lq_mngr.lq_ready = 0;
7832 #ifdef CONFIG_IWL4965_HT
7833 spin_lock_irqsave(&priv->lock, flags);
7834 memset(&priv->current_ht_config, 0, sizeof(struct iwl_ht_info));
7835 spin_unlock_irqrestore(&priv->lock, flags);
7836 #endif /* CONFIG_IWL4965_HT */
7837
7838 iwl4965_reset_qos(priv);
7839
7840 cancel_delayed_work(&priv->post_associate);
7841
7842 spin_lock_irqsave(&priv->lock, flags);
7843 priv->assoc_id = 0;
7844 priv->assoc_capability = 0;
7845 priv->call_post_assoc_from_beacon = 0;
7846 priv->assoc_station_added = 0;
7847
7848 /* new association get rid of ibss beacon skb */
7849 if (priv->ibss_beacon)
7850 dev_kfree_skb(priv->ibss_beacon);
7851
7852 priv->ibss_beacon = NULL;
7853
7854 priv->beacon_int = priv->hw->conf.beacon_int;
7855 priv->timestamp1 = 0;
7856 priv->timestamp0 = 0;
7857 if ((priv->iw_mode == IEEE80211_IF_TYPE_STA))
7858 priv->beacon_int = 0;
7859
7860 spin_unlock_irqrestore(&priv->lock, flags);
7861
7862 if (!iwl4965_is_ready_rf(priv)) {
7863 IWL_DEBUG_MAC80211("leave - not ready\n");
7864 mutex_unlock(&priv->mutex);
7865 return;
7866 }
7867
7868 /* we are restarting association process
7869 * clear RXON_FILTER_ASSOC_MSK bit
7870 */
7871 if (priv->iw_mode != IEEE80211_IF_TYPE_AP) {
7872 iwl4965_scan_cancel_timeout(priv, 100);
7873 priv->staging_rxon.filter_flags &= ~RXON_FILTER_ASSOC_MSK;
7874 iwl4965_commit_rxon(priv);
7875 }
7876
7877 /* Per mac80211.h: This is only used in IBSS mode... */
7878 if (priv->iw_mode != IEEE80211_IF_TYPE_IBSS) {
7879
7880 IWL_DEBUG_MAC80211("leave - not in IBSS\n");
7881 mutex_unlock(&priv->mutex);
7882 return;
7883 }
7884
7885 priv->only_active_channel = 0;
7886
7887 iwl4965_set_rate(priv);
7888
7889 mutex_unlock(&priv->mutex);
7890
7891 IWL_DEBUG_MAC80211("leave\n");
7892 }
7893
7894 static int iwl4965_mac_beacon_update(struct ieee80211_hw *hw, struct sk_buff *skb,
7895 struct ieee80211_tx_control *control)
7896 {
7897 struct iwl4965_priv *priv = hw->priv;
7898 unsigned long flags;
7899
7900 mutex_lock(&priv->mutex);
7901 IWL_DEBUG_MAC80211("enter\n");
7902
7903 if (!iwl4965_is_ready_rf(priv)) {
7904 IWL_DEBUG_MAC80211("leave - RF not ready\n");
7905 mutex_unlock(&priv->mutex);
7906 return -EIO;
7907 }
7908
7909 if (priv->iw_mode != IEEE80211_IF_TYPE_IBSS) {
7910 IWL_DEBUG_MAC80211("leave - not IBSS\n");
7911 mutex_unlock(&priv->mutex);
7912 return -EIO;
7913 }
7914
7915 spin_lock_irqsave(&priv->lock, flags);
7916
7917 if (priv->ibss_beacon)
7918 dev_kfree_skb(priv->ibss_beacon);
7919
7920 priv->ibss_beacon = skb;
7921
7922 priv->assoc_id = 0;
7923
7924 IWL_DEBUG_MAC80211("leave\n");
7925 spin_unlock_irqrestore(&priv->lock, flags);
7926
7927 iwl4965_reset_qos(priv);
7928
7929 queue_work(priv->workqueue, &priv->post_associate.work);
7930
7931 mutex_unlock(&priv->mutex);
7932
7933 return 0;
7934 }
7935
7936 #ifdef CONFIG_IWL4965_HT
7937
7938 static void iwl4965_ht_info_fill(struct ieee80211_conf *conf,
7939 struct iwl4965_priv *priv)
7940 {
7941 struct iwl_ht_info *iwl_conf = &priv->current_ht_config;
7942 struct ieee80211_ht_info *ht_conf = &conf->ht_conf;
7943 struct ieee80211_ht_bss_info *ht_bss_conf = &conf->ht_bss_conf;
7944
7945 IWL_DEBUG_MAC80211("enter: \n");
7946
7947 if (!(conf->flags & IEEE80211_CONF_SUPPORT_HT_MODE)) {
7948 iwl_conf->is_ht = 0;
7949 return;
7950 }
7951
7952 iwl_conf->is_ht = 1;
7953 priv->ps_mode = (u8)((ht_conf->cap & IEEE80211_HT_CAP_MIMO_PS) >> 2);
7954
7955 if (ht_conf->cap & IEEE80211_HT_CAP_SGI_20)
7956 iwl_conf->sgf |= 0x1;
7957 if (ht_conf->cap & IEEE80211_HT_CAP_SGI_40)
7958 iwl_conf->sgf |= 0x2;
7959
7960 iwl_conf->is_green_field = !!(ht_conf->cap & IEEE80211_HT_CAP_GRN_FLD);
7961 iwl_conf->max_amsdu_size =
7962 !!(ht_conf->cap & IEEE80211_HT_CAP_MAX_AMSDU);
7963
7964 iwl_conf->supported_chan_width =
7965 !!(ht_conf->cap & IEEE80211_HT_CAP_SUP_WIDTH);
7966 iwl_conf->extension_chan_offset =
7967 ht_bss_conf->bss_cap & IEEE80211_HT_IE_CHA_SEC_OFFSET;
7968 /* If no above or below channel supplied disable FAT channel */
7969 if (iwl_conf->extension_chan_offset != IWL_EXT_CHANNEL_OFFSET_ABOVE &&
7970 iwl_conf->extension_chan_offset != IWL_EXT_CHANNEL_OFFSET_BELOW)
7971 iwl_conf->supported_chan_width = 0;
7972
7973 iwl_conf->tx_mimo_ps_mode =
7974 (u8)((ht_conf->cap & IEEE80211_HT_CAP_MIMO_PS) >> 2);
7975 memcpy(iwl_conf->supp_mcs_set, ht_conf->supp_mcs_set, 16);
7976
7977 iwl_conf->control_channel = ht_bss_conf->primary_channel;
7978 iwl_conf->tx_chan_width =
7979 !!(ht_bss_conf->bss_cap & IEEE80211_HT_IE_CHA_WIDTH);
7980 iwl_conf->ht_protection =
7981 ht_bss_conf->bss_op_mode & IEEE80211_HT_IE_HT_PROTECTION;
7982 iwl_conf->non_GF_STA_present =
7983 !!(ht_bss_conf->bss_op_mode & IEEE80211_HT_IE_NON_GF_STA_PRSNT);
7984
7985 IWL_DEBUG_MAC80211("control channel %d\n",
7986 iwl_conf->control_channel);
7987 IWL_DEBUG_MAC80211("leave\n");
7988 }
7989
7990 static int iwl4965_mac_conf_ht(struct ieee80211_hw *hw,
7991 struct ieee80211_conf *conf)
7992 {
7993 struct iwl4965_priv *priv = hw->priv;
7994
7995 IWL_DEBUG_MAC80211("enter: \n");
7996
7997 iwl4965_ht_info_fill(conf, priv);
7998 iwl4965_set_rxon_chain(priv);
7999
8000 if (priv && priv->assoc_id &&
8001 (priv->iw_mode == IEEE80211_IF_TYPE_STA)) {
8002 unsigned long flags;
8003
8004 spin_lock_irqsave(&priv->lock, flags);
8005 if (priv->beacon_int)
8006 queue_work(priv->workqueue, &priv->post_associate.work);
8007 else
8008 priv->call_post_assoc_from_beacon = 1;
8009 spin_unlock_irqrestore(&priv->lock, flags);
8010 }
8011
8012 IWL_DEBUG_MAC80211("leave:\n");
8013 return 0;
8014 }
8015
8016 #endif /*CONFIG_IWL4965_HT*/
8017
8018 /*****************************************************************************
8019 *
8020 * sysfs attributes
8021 *
8022 *****************************************************************************/
8023
8024 #ifdef CONFIG_IWL4965_DEBUG
8025
8026 /*
8027 * The following adds a new attribute to the sysfs representation
8028 * of this device driver (i.e. a new file in /sys/bus/pci/drivers/iwl/)
8029 * used for controlling the debug level.
8030 *
8031 * See the level definitions in iwl for details.
8032 */
8033
8034 static ssize_t show_debug_level(struct device_driver *d, char *buf)
8035 {
8036 return sprintf(buf, "0x%08X\n", iwl4965_debug_level);
8037 }
8038 static ssize_t store_debug_level(struct device_driver *d,
8039 const char *buf, size_t count)
8040 {
8041 char *p = (char *)buf;
8042 u32 val;
8043
8044 val = simple_strtoul(p, &p, 0);
8045 if (p == buf)
8046 printk(KERN_INFO DRV_NAME
8047 ": %s is not in hex or decimal form.\n", buf);
8048 else
8049 iwl4965_debug_level = val;
8050
8051 return strnlen(buf, count);
8052 }
8053
8054 static DRIVER_ATTR(debug_level, S_IWUSR | S_IRUGO,
8055 show_debug_level, store_debug_level);
8056
8057 #endif /* CONFIG_IWL4965_DEBUG */
8058
8059 static ssize_t show_rf_kill(struct device *d,
8060 struct device_attribute *attr, char *buf)
8061 {
8062 /*
8063 * 0 - RF kill not enabled
8064 * 1 - SW based RF kill active (sysfs)
8065 * 2 - HW based RF kill active
8066 * 3 - Both HW and SW based RF kill active
8067 */
8068 struct iwl4965_priv *priv = (struct iwl4965_priv *)d->driver_data;
8069 int val = (test_bit(STATUS_RF_KILL_SW, &priv->status) ? 0x1 : 0x0) |
8070 (test_bit(STATUS_RF_KILL_HW, &priv->status) ? 0x2 : 0x0);
8071
8072 return sprintf(buf, "%i\n", val);
8073 }
8074
8075 static ssize_t store_rf_kill(struct device *d,
8076 struct device_attribute *attr,
8077 const char *buf, size_t count)
8078 {
8079 struct iwl4965_priv *priv = (struct iwl4965_priv *)d->driver_data;
8080
8081 mutex_lock(&priv->mutex);
8082 iwl4965_radio_kill_sw(priv, buf[0] == '1');
8083 mutex_unlock(&priv->mutex);
8084
8085 return count;
8086 }
8087
8088 static DEVICE_ATTR(rf_kill, S_IWUSR | S_IRUGO, show_rf_kill, store_rf_kill);
8089
8090 static ssize_t show_temperature(struct device *d,
8091 struct device_attribute *attr, char *buf)
8092 {
8093 struct iwl4965_priv *priv = (struct iwl4965_priv *)d->driver_data;
8094
8095 if (!iwl4965_is_alive(priv))
8096 return -EAGAIN;
8097
8098 return sprintf(buf, "%d\n", iwl4965_hw_get_temperature(priv));
8099 }
8100
8101 static DEVICE_ATTR(temperature, S_IRUGO, show_temperature, NULL);
8102
8103 static ssize_t show_rs_window(struct device *d,
8104 struct device_attribute *attr,
8105 char *buf)
8106 {
8107 struct iwl4965_priv *priv = d->driver_data;
8108 return iwl4965_fill_rs_info(priv->hw, buf, IWL_AP_ID);
8109 }
8110 static DEVICE_ATTR(rs_window, S_IRUGO, show_rs_window, NULL);
8111
8112 static ssize_t show_tx_power(struct device *d,
8113 struct device_attribute *attr, char *buf)
8114 {
8115 struct iwl4965_priv *priv = (struct iwl4965_priv *)d->driver_data;
8116 return sprintf(buf, "%d\n", priv->user_txpower_limit);
8117 }
8118
8119 static ssize_t store_tx_power(struct device *d,
8120 struct device_attribute *attr,
8121 const char *buf, size_t count)
8122 {
8123 struct iwl4965_priv *priv = (struct iwl4965_priv *)d->driver_data;
8124 char *p = (char *)buf;
8125 u32 val;
8126
8127 val = simple_strtoul(p, &p, 10);
8128 if (p == buf)
8129 printk(KERN_INFO DRV_NAME
8130 ": %s is not in decimal form.\n", buf);
8131 else
8132 iwl4965_hw_reg_set_txpower(priv, val);
8133
8134 return count;
8135 }
8136
8137 static DEVICE_ATTR(tx_power, S_IWUSR | S_IRUGO, show_tx_power, store_tx_power);
8138
8139 static ssize_t show_flags(struct device *d,
8140 struct device_attribute *attr, char *buf)
8141 {
8142 struct iwl4965_priv *priv = (struct iwl4965_priv *)d->driver_data;
8143
8144 return sprintf(buf, "0x%04X\n", priv->active_rxon.flags);
8145 }
8146
8147 static ssize_t store_flags(struct device *d,
8148 struct device_attribute *attr,
8149 const char *buf, size_t count)
8150 {
8151 struct iwl4965_priv *priv = (struct iwl4965_priv *)d->driver_data;
8152 u32 flags = simple_strtoul(buf, NULL, 0);
8153
8154 mutex_lock(&priv->mutex);
8155 if (le32_to_cpu(priv->staging_rxon.flags) != flags) {
8156 /* Cancel any currently running scans... */
8157 if (iwl4965_scan_cancel_timeout(priv, 100))
8158 IWL_WARNING("Could not cancel scan.\n");
8159 else {
8160 IWL_DEBUG_INFO("Committing rxon.flags = 0x%04X\n",
8161 flags);
8162 priv->staging_rxon.flags = cpu_to_le32(flags);
8163 iwl4965_commit_rxon(priv);
8164 }
8165 }
8166 mutex_unlock(&priv->mutex);
8167
8168 return count;
8169 }
8170
8171 static DEVICE_ATTR(flags, S_IWUSR | S_IRUGO, show_flags, store_flags);
8172
8173 static ssize_t show_filter_flags(struct device *d,
8174 struct device_attribute *attr, char *buf)
8175 {
8176 struct iwl4965_priv *priv = (struct iwl4965_priv *)d->driver_data;
8177
8178 return sprintf(buf, "0x%04X\n",
8179 le32_to_cpu(priv->active_rxon.filter_flags));
8180 }
8181
8182 static ssize_t store_filter_flags(struct device *d,
8183 struct device_attribute *attr,
8184 const char *buf, size_t count)
8185 {
8186 struct iwl4965_priv *priv = (struct iwl4965_priv *)d->driver_data;
8187 u32 filter_flags = simple_strtoul(buf, NULL, 0);
8188
8189 mutex_lock(&priv->mutex);
8190 if (le32_to_cpu(priv->staging_rxon.filter_flags) != filter_flags) {
8191 /* Cancel any currently running scans... */
8192 if (iwl4965_scan_cancel_timeout(priv, 100))
8193 IWL_WARNING("Could not cancel scan.\n");
8194 else {
8195 IWL_DEBUG_INFO("Committing rxon.filter_flags = "
8196 "0x%04X\n", filter_flags);
8197 priv->staging_rxon.filter_flags =
8198 cpu_to_le32(filter_flags);
8199 iwl4965_commit_rxon(priv);
8200 }
8201 }
8202 mutex_unlock(&priv->mutex);
8203
8204 return count;
8205 }
8206
8207 static DEVICE_ATTR(filter_flags, S_IWUSR | S_IRUGO, show_filter_flags,
8208 store_filter_flags);
8209
8210 #ifdef CONFIG_IWL4965_SPECTRUM_MEASUREMENT
8211
8212 static ssize_t show_measurement(struct device *d,
8213 struct device_attribute *attr, char *buf)
8214 {
8215 struct iwl4965_priv *priv = dev_get_drvdata(d);
8216 struct iwl4965_spectrum_notification measure_report;
8217 u32 size = sizeof(measure_report), len = 0, ofs = 0;
8218 u8 *data = (u8 *) & measure_report;
8219 unsigned long flags;
8220
8221 spin_lock_irqsave(&priv->lock, flags);
8222 if (!(priv->measurement_status & MEASUREMENT_READY)) {
8223 spin_unlock_irqrestore(&priv->lock, flags);
8224 return 0;
8225 }
8226 memcpy(&measure_report, &priv->measure_report, size);
8227 priv->measurement_status = 0;
8228 spin_unlock_irqrestore(&priv->lock, flags);
8229
8230 while (size && (PAGE_SIZE - len)) {
8231 hex_dump_to_buffer(data + ofs, size, 16, 1, buf + len,
8232 PAGE_SIZE - len, 1);
8233 len = strlen(buf);
8234 if (PAGE_SIZE - len)
8235 buf[len++] = '\n';
8236
8237 ofs += 16;
8238 size -= min(size, 16U);
8239 }
8240
8241 return len;
8242 }
8243
8244 static ssize_t store_measurement(struct device *d,
8245 struct device_attribute *attr,
8246 const char *buf, size_t count)
8247 {
8248 struct iwl4965_priv *priv = dev_get_drvdata(d);
8249 struct ieee80211_measurement_params params = {
8250 .channel = le16_to_cpu(priv->active_rxon.channel),
8251 .start_time = cpu_to_le64(priv->last_tsf),
8252 .duration = cpu_to_le16(1),
8253 };
8254 u8 type = IWL_MEASURE_BASIC;
8255 u8 buffer[32];
8256 u8 channel;
8257
8258 if (count) {
8259 char *p = buffer;
8260 strncpy(buffer, buf, min(sizeof(buffer), count));
8261 channel = simple_strtoul(p, NULL, 0);
8262 if (channel)
8263 params.channel = channel;
8264
8265 p = buffer;
8266 while (*p && *p != ' ')
8267 p++;
8268 if (*p)
8269 type = simple_strtoul(p + 1, NULL, 0);
8270 }
8271
8272 IWL_DEBUG_INFO("Invoking measurement of type %d on "
8273 "channel %d (for '%s')\n", type, params.channel, buf);
8274 iwl4965_get_measurement(priv, &params, type);
8275
8276 return count;
8277 }
8278
8279 static DEVICE_ATTR(measurement, S_IRUSR | S_IWUSR,
8280 show_measurement, store_measurement);
8281 #endif /* CONFIG_IWL4965_SPECTRUM_MEASUREMENT */
8282
8283 static ssize_t store_retry_rate(struct device *d,
8284 struct device_attribute *attr,
8285 const char *buf, size_t count)
8286 {
8287 struct iwl4965_priv *priv = dev_get_drvdata(d);
8288
8289 priv->retry_rate = simple_strtoul(buf, NULL, 0);
8290 if (priv->retry_rate <= 0)
8291 priv->retry_rate = 1;
8292
8293 return count;
8294 }
8295
8296 static ssize_t show_retry_rate(struct device *d,
8297 struct device_attribute *attr, char *buf)
8298 {
8299 struct iwl4965_priv *priv = dev_get_drvdata(d);
8300 return sprintf(buf, "%d", priv->retry_rate);
8301 }
8302
8303 static DEVICE_ATTR(retry_rate, S_IWUSR | S_IRUSR, show_retry_rate,
8304 store_retry_rate);
8305
8306 static ssize_t store_power_level(struct device *d,
8307 struct device_attribute *attr,
8308 const char *buf, size_t count)
8309 {
8310 struct iwl4965_priv *priv = dev_get_drvdata(d);
8311 int rc;
8312 int mode;
8313
8314 mode = simple_strtoul(buf, NULL, 0);
8315 mutex_lock(&priv->mutex);
8316
8317 if (!iwl4965_is_ready(priv)) {
8318 rc = -EAGAIN;
8319 goto out;
8320 }
8321
8322 if ((mode < 1) || (mode > IWL_POWER_LIMIT) || (mode == IWL_POWER_AC))
8323 mode = IWL_POWER_AC;
8324 else
8325 mode |= IWL_POWER_ENABLED;
8326
8327 if (mode != priv->power_mode) {
8328 rc = iwl4965_send_power_mode(priv, IWL_POWER_LEVEL(mode));
8329 if (rc) {
8330 IWL_DEBUG_MAC80211("failed setting power mode.\n");
8331 goto out;
8332 }
8333 priv->power_mode = mode;
8334 }
8335
8336 rc = count;
8337
8338 out:
8339 mutex_unlock(&priv->mutex);
8340 return rc;
8341 }
8342
8343 #define MAX_WX_STRING 80
8344
8345 /* Values are in microsecond */
8346 static const s32 timeout_duration[] = {
8347 350000,
8348 250000,
8349 75000,
8350 37000,
8351 25000,
8352 };
8353 static const s32 period_duration[] = {
8354 400000,
8355 700000,
8356 1000000,
8357 1000000,
8358 1000000
8359 };
8360
8361 static ssize_t show_power_level(struct device *d,
8362 struct device_attribute *attr, char *buf)
8363 {
8364 struct iwl4965_priv *priv = dev_get_drvdata(d);
8365 int level = IWL_POWER_LEVEL(priv->power_mode);
8366 char *p = buf;
8367
8368 p += sprintf(p, "%d ", level);
8369 switch (level) {
8370 case IWL_POWER_MODE_CAM:
8371 case IWL_POWER_AC:
8372 p += sprintf(p, "(AC)");
8373 break;
8374 case IWL_POWER_BATTERY:
8375 p += sprintf(p, "(BATTERY)");
8376 break;
8377 default:
8378 p += sprintf(p,
8379 "(Timeout %dms, Period %dms)",
8380 timeout_duration[level - 1] / 1000,
8381 period_duration[level - 1] / 1000);
8382 }
8383
8384 if (!(priv->power_mode & IWL_POWER_ENABLED))
8385 p += sprintf(p, " OFF\n");
8386 else
8387 p += sprintf(p, " \n");
8388
8389 return (p - buf + 1);
8390
8391 }
8392
8393 static DEVICE_ATTR(power_level, S_IWUSR | S_IRUSR, show_power_level,
8394 store_power_level);
8395
8396 static ssize_t show_channels(struct device *d,
8397 struct device_attribute *attr, char *buf)
8398 {
8399 /* all this shit doesn't belong into sysfs anyway */
8400 return 0;
8401 }
8402
8403 static DEVICE_ATTR(channels, S_IRUSR, show_channels, NULL);
8404
8405 static ssize_t show_statistics(struct device *d,
8406 struct device_attribute *attr, char *buf)
8407 {
8408 struct iwl4965_priv *priv = dev_get_drvdata(d);
8409 u32 size = sizeof(struct iwl4965_notif_statistics);
8410 u32 len = 0, ofs = 0;
8411 u8 *data = (u8 *) & priv->statistics;
8412 int rc = 0;
8413
8414 if (!iwl4965_is_alive(priv))
8415 return -EAGAIN;
8416
8417 mutex_lock(&priv->mutex);
8418 rc = iwl4965_send_statistics_request(priv);
8419 mutex_unlock(&priv->mutex);
8420
8421 if (rc) {
8422 len = sprintf(buf,
8423 "Error sending statistics request: 0x%08X\n", rc);
8424 return len;
8425 }
8426
8427 while (size && (PAGE_SIZE - len)) {
8428 hex_dump_to_buffer(data + ofs, size, 16, 1, buf + len,
8429 PAGE_SIZE - len, 1);
8430 len = strlen(buf);
8431 if (PAGE_SIZE - len)
8432 buf[len++] = '\n';
8433
8434 ofs += 16;
8435 size -= min(size, 16U);
8436 }
8437
8438 return len;
8439 }
8440
8441 static DEVICE_ATTR(statistics, S_IRUGO, show_statistics, NULL);
8442
8443 static ssize_t show_antenna(struct device *d,
8444 struct device_attribute *attr, char *buf)
8445 {
8446 struct iwl4965_priv *priv = dev_get_drvdata(d);
8447
8448 if (!iwl4965_is_alive(priv))
8449 return -EAGAIN;
8450
8451 return sprintf(buf, "%d\n", priv->antenna);
8452 }
8453
8454 static ssize_t store_antenna(struct device *d,
8455 struct device_attribute *attr,
8456 const char *buf, size_t count)
8457 {
8458 int ant;
8459 struct iwl4965_priv *priv = dev_get_drvdata(d);
8460
8461 if (count == 0)
8462 return 0;
8463
8464 if (sscanf(buf, "%1i", &ant) != 1) {
8465 IWL_DEBUG_INFO("not in hex or decimal form.\n");
8466 return count;
8467 }
8468
8469 if ((ant >= 0) && (ant <= 2)) {
8470 IWL_DEBUG_INFO("Setting antenna select to %d.\n", ant);
8471 priv->antenna = (enum iwl4965_antenna)ant;
8472 } else
8473 IWL_DEBUG_INFO("Bad antenna select value %d.\n", ant);
8474
8475
8476 return count;
8477 }
8478
8479 static DEVICE_ATTR(antenna, S_IWUSR | S_IRUGO, show_antenna, store_antenna);
8480
8481 static ssize_t show_status(struct device *d,
8482 struct device_attribute *attr, char *buf)
8483 {
8484 struct iwl4965_priv *priv = (struct iwl4965_priv *)d->driver_data;
8485 if (!iwl4965_is_alive(priv))
8486 return -EAGAIN;
8487 return sprintf(buf, "0x%08x\n", (int)priv->status);
8488 }
8489
8490 static DEVICE_ATTR(status, S_IRUGO, show_status, NULL);
8491
8492 static ssize_t dump_error_log(struct device *d,
8493 struct device_attribute *attr,
8494 const char *buf, size_t count)
8495 {
8496 char *p = (char *)buf;
8497
8498 if (p[0] == '1')
8499 iwl4965_dump_nic_error_log((struct iwl4965_priv *)d->driver_data);
8500
8501 return strnlen(buf, count);
8502 }
8503
8504 static DEVICE_ATTR(dump_errors, S_IWUSR, NULL, dump_error_log);
8505
8506 static ssize_t dump_event_log(struct device *d,
8507 struct device_attribute *attr,
8508 const char *buf, size_t count)
8509 {
8510 char *p = (char *)buf;
8511
8512 if (p[0] == '1')
8513 iwl4965_dump_nic_event_log((struct iwl4965_priv *)d->driver_data);
8514
8515 return strnlen(buf, count);
8516 }
8517
8518 static DEVICE_ATTR(dump_events, S_IWUSR, NULL, dump_event_log);
8519
8520 /*****************************************************************************
8521 *
8522 * driver setup and teardown
8523 *
8524 *****************************************************************************/
8525
8526 static void iwl4965_setup_deferred_work(struct iwl4965_priv *priv)
8527 {
8528 priv->workqueue = create_workqueue(DRV_NAME);
8529
8530 init_waitqueue_head(&priv->wait_command_queue);
8531
8532 INIT_WORK(&priv->up, iwl4965_bg_up);
8533 INIT_WORK(&priv->restart, iwl4965_bg_restart);
8534 INIT_WORK(&priv->rx_replenish, iwl4965_bg_rx_replenish);
8535 INIT_WORK(&priv->scan_completed, iwl4965_bg_scan_completed);
8536 INIT_WORK(&priv->request_scan, iwl4965_bg_request_scan);
8537 INIT_WORK(&priv->abort_scan, iwl4965_bg_abort_scan);
8538 INIT_WORK(&priv->rf_kill, iwl4965_bg_rf_kill);
8539 INIT_WORK(&priv->beacon_update, iwl4965_bg_beacon_update);
8540 INIT_DELAYED_WORK(&priv->post_associate, iwl4965_bg_post_associate);
8541 INIT_DELAYED_WORK(&priv->init_alive_start, iwl4965_bg_init_alive_start);
8542 INIT_DELAYED_WORK(&priv->alive_start, iwl4965_bg_alive_start);
8543 INIT_DELAYED_WORK(&priv->scan_check, iwl4965_bg_scan_check);
8544
8545 iwl4965_hw_setup_deferred_work(priv);
8546
8547 tasklet_init(&priv->irq_tasklet, (void (*)(unsigned long))
8548 iwl4965_irq_tasklet, (unsigned long)priv);
8549 }
8550
8551 static void iwl4965_cancel_deferred_work(struct iwl4965_priv *priv)
8552 {
8553 iwl4965_hw_cancel_deferred_work(priv);
8554
8555 cancel_delayed_work_sync(&priv->init_alive_start);
8556 cancel_delayed_work(&priv->scan_check);
8557 cancel_delayed_work(&priv->alive_start);
8558 cancel_delayed_work(&priv->post_associate);
8559 cancel_work_sync(&priv->beacon_update);
8560 }
8561
8562 static struct attribute *iwl4965_sysfs_entries[] = {
8563 &dev_attr_antenna.attr,
8564 &dev_attr_channels.attr,
8565 &dev_attr_dump_errors.attr,
8566 &dev_attr_dump_events.attr,
8567 &dev_attr_flags.attr,
8568 &dev_attr_filter_flags.attr,
8569 #ifdef CONFIG_IWL4965_SPECTRUM_MEASUREMENT
8570 &dev_attr_measurement.attr,
8571 #endif
8572 &dev_attr_power_level.attr,
8573 &dev_attr_retry_rate.attr,
8574 &dev_attr_rf_kill.attr,
8575 &dev_attr_rs_window.attr,
8576 &dev_attr_statistics.attr,
8577 &dev_attr_status.attr,
8578 &dev_attr_temperature.attr,
8579 &dev_attr_tx_power.attr,
8580
8581 NULL
8582 };
8583
8584 static struct attribute_group iwl4965_attribute_group = {
8585 .name = NULL, /* put in device directory */
8586 .attrs = iwl4965_sysfs_entries,
8587 };
8588
8589 static struct ieee80211_ops iwl4965_hw_ops = {
8590 .tx = iwl4965_mac_tx,
8591 .start = iwl4965_mac_start,
8592 .stop = iwl4965_mac_stop,
8593 .add_interface = iwl4965_mac_add_interface,
8594 .remove_interface = iwl4965_mac_remove_interface,
8595 .config = iwl4965_mac_config,
8596 .config_interface = iwl4965_mac_config_interface,
8597 .configure_filter = iwl4965_configure_filter,
8598 .set_key = iwl4965_mac_set_key,
8599 .get_stats = iwl4965_mac_get_stats,
8600 .get_tx_stats = iwl4965_mac_get_tx_stats,
8601 .conf_tx = iwl4965_mac_conf_tx,
8602 .get_tsf = iwl4965_mac_get_tsf,
8603 .reset_tsf = iwl4965_mac_reset_tsf,
8604 .beacon_update = iwl4965_mac_beacon_update,
8605 .bss_info_changed = iwl4965_bss_info_changed,
8606 #ifdef CONFIG_IWL4965_HT
8607 .conf_ht = iwl4965_mac_conf_ht,
8608 .ampdu_action = iwl4965_mac_ampdu_action,
8609 #endif /* CONFIG_IWL4965_HT */
8610 .hw_scan = iwl4965_mac_hw_scan
8611 };
8612
8613 static int iwl4965_pci_probe(struct pci_dev *pdev, const struct pci_device_id *ent)
8614 {
8615 int err = 0;
8616 struct iwl4965_priv *priv;
8617 struct ieee80211_hw *hw;
8618 struct iwl_cfg *cfg = (struct iwl_cfg *)(ent->driver_data);
8619 int i;
8620 DECLARE_MAC_BUF(mac);
8621
8622 /* Disabling hardware scan means that mac80211 will perform scans
8623 * "the hard way", rather than using device's scan. */
8624 if (iwl4965_param_disable_hw_scan) {
8625 IWL_DEBUG_INFO("Disabling hw_scan\n");
8626 iwl4965_hw_ops.hw_scan = NULL;
8627 }
8628
8629 if ((iwl4965_param_queues_num > IWL_MAX_NUM_QUEUES) ||
8630 (iwl4965_param_queues_num < IWL_MIN_NUM_QUEUES)) {
8631 IWL_ERROR("invalid queues_num, should be between %d and %d\n",
8632 IWL_MIN_NUM_QUEUES, IWL_MAX_NUM_QUEUES);
8633 err = -EINVAL;
8634 goto out;
8635 }
8636
8637 /* mac80211 allocates memory for this device instance, including
8638 * space for this driver's private structure */
8639 hw = ieee80211_alloc_hw(sizeof(struct iwl4965_priv), &iwl4965_hw_ops);
8640 if (hw == NULL) {
8641 IWL_ERROR("Can not allocate network device\n");
8642 err = -ENOMEM;
8643 goto out;
8644 }
8645 SET_IEEE80211_DEV(hw, &pdev->dev);
8646
8647 hw->rate_control_algorithm = "iwl-4965-rs";
8648
8649 IWL_DEBUG_INFO("*** LOAD DRIVER ***\n");
8650 priv = hw->priv;
8651 priv->hw = hw;
8652 priv->cfg = cfg;
8653
8654 priv->pci_dev = pdev;
8655 priv->antenna = (enum iwl4965_antenna)iwl4965_param_antenna;
8656 #ifdef CONFIG_IWL4965_DEBUG
8657 iwl4965_debug_level = iwl4965_param_debug;
8658 atomic_set(&priv->restrict_refcnt, 0);
8659 #endif
8660 priv->retry_rate = 1;
8661
8662 priv->ibss_beacon = NULL;
8663
8664 /* Tell mac80211 and its clients (e.g. Wireless Extensions)
8665 * the range of signal quality values that we'll provide.
8666 * Negative values for level/noise indicate that we'll provide dBm.
8667 * For WE, at least, non-0 values here *enable* display of values
8668 * in app (iwconfig). */
8669 hw->max_rssi = -20; /* signal level, negative indicates dBm */
8670 hw->max_noise = -20; /* noise level, negative indicates dBm */
8671 hw->max_signal = 100; /* link quality indication (%) */
8672
8673 /* Tell mac80211 our Tx characteristics */
8674 hw->flags = IEEE80211_HW_HOST_GEN_BEACON_TEMPLATE;
8675
8676 /* Default value; 4 EDCA QOS priorities */
8677 hw->queues = 4;
8678 #ifdef CONFIG_IWL4965_HT
8679 /* Enhanced value; more queues, to support 11n aggregation */
8680 hw->queues = 16;
8681 #endif /* CONFIG_IWL4965_HT */
8682
8683 spin_lock_init(&priv->lock);
8684 spin_lock_init(&priv->power_data.lock);
8685 spin_lock_init(&priv->sta_lock);
8686 spin_lock_init(&priv->hcmd_lock);
8687 spin_lock_init(&priv->lq_mngr.lock);
8688
8689 for (i = 0; i < IWL_IBSS_MAC_HASH_SIZE; i++)
8690 INIT_LIST_HEAD(&priv->ibss_mac_hash[i]);
8691
8692 INIT_LIST_HEAD(&priv->free_frames);
8693
8694 mutex_init(&priv->mutex);
8695 if (pci_enable_device(pdev)) {
8696 err = -ENODEV;
8697 goto out_ieee80211_free_hw;
8698 }
8699
8700 pci_set_master(pdev);
8701
8702 /* Clear the driver's (not device's) station table */
8703 iwl4965_clear_stations_table(priv);
8704
8705 priv->data_retry_limit = -1;
8706 priv->ieee_channels = NULL;
8707 priv->ieee_rates = NULL;
8708 priv->band = IEEE80211_BAND_2GHZ;
8709
8710 err = pci_set_dma_mask(pdev, DMA_32BIT_MASK);
8711 if (!err)
8712 err = pci_set_consistent_dma_mask(pdev, DMA_32BIT_MASK);
8713 if (err) {
8714 printk(KERN_WARNING DRV_NAME ": No suitable DMA available.\n");
8715 goto out_pci_disable_device;
8716 }
8717
8718 pci_set_drvdata(pdev, priv);
8719 err = pci_request_regions(pdev, DRV_NAME);
8720 if (err)
8721 goto out_pci_disable_device;
8722
8723 /* We disable the RETRY_TIMEOUT register (0x41) to keep
8724 * PCI Tx retries from interfering with C3 CPU state */
8725 pci_write_config_byte(pdev, 0x41, 0x00);
8726
8727 priv->hw_base = pci_iomap(pdev, 0, 0);
8728 if (!priv->hw_base) {
8729 err = -ENODEV;
8730 goto out_pci_release_regions;
8731 }
8732
8733 IWL_DEBUG_INFO("pci_resource_len = 0x%08llx\n",
8734 (unsigned long long) pci_resource_len(pdev, 0));
8735 IWL_DEBUG_INFO("pci_resource_base = %p\n", priv->hw_base);
8736
8737 /* Initialize module parameter values here */
8738
8739 /* Disable radio (SW RF KILL) via parameter when loading driver */
8740 if (iwl4965_param_disable) {
8741 set_bit(STATUS_RF_KILL_SW, &priv->status);
8742 IWL_DEBUG_INFO("Radio disabled.\n");
8743 }
8744
8745 priv->iw_mode = IEEE80211_IF_TYPE_STA;
8746
8747 priv->ps_mode = 0;
8748 priv->use_ant_b_for_management_frame = 1; /* start with ant B */
8749 priv->valid_antenna = 0x7; /* assume all 3 connected */
8750 priv->ps_mode = IWL_MIMO_PS_NONE;
8751
8752 /* Choose which receivers/antennas to use */
8753 iwl4965_set_rxon_chain(priv);
8754
8755
8756 printk(KERN_INFO DRV_NAME
8757 ": Detected Intel Wireless WiFi Link %s\n", priv->cfg->name);
8758
8759 /* Device-specific setup */
8760 if (iwl4965_hw_set_hw_setting(priv)) {
8761 IWL_ERROR("failed to set hw settings\n");
8762 goto out_iounmap;
8763 }
8764
8765 if (iwl4965_param_qos_enable)
8766 priv->qos_data.qos_enable = 1;
8767
8768 iwl4965_reset_qos(priv);
8769
8770 priv->qos_data.qos_active = 0;
8771 priv->qos_data.qos_cap.val = 0;
8772
8773 iwl4965_set_rxon_channel(priv, IEEE80211_BAND_2GHZ, 6);
8774 iwl4965_setup_deferred_work(priv);
8775 iwl4965_setup_rx_handlers(priv);
8776
8777 priv->rates_mask = IWL_RATES_MASK;
8778 /* If power management is turned on, default to AC mode */
8779 priv->power_mode = IWL_POWER_AC;
8780 priv->user_txpower_limit = IWL_DEFAULT_TX_POWER;
8781
8782 iwl4965_disable_interrupts(priv);
8783
8784 err = sysfs_create_group(&pdev->dev.kobj, &iwl4965_attribute_group);
8785 if (err) {
8786 IWL_ERROR("failed to create sysfs device attributes\n");
8787 goto out_release_irq;
8788 }
8789
8790 /* nic init */
8791 iwl4965_set_bit(priv, CSR_GIO_CHICKEN_BITS,
8792 CSR_GIO_CHICKEN_BITS_REG_BIT_DIS_L0S_EXIT_TIMER);
8793
8794 iwl4965_set_bit(priv, CSR_GP_CNTRL, CSR_GP_CNTRL_REG_FLAG_INIT_DONE);
8795 err = iwl4965_poll_bit(priv, CSR_GP_CNTRL,
8796 CSR_GP_CNTRL_REG_FLAG_MAC_CLOCK_READY,
8797 CSR_GP_CNTRL_REG_FLAG_MAC_CLOCK_READY, 25000);
8798 if (err < 0) {
8799 IWL_DEBUG_INFO("Failed to init the card\n");
8800 goto out_remove_sysfs;
8801 }
8802 /* Read the EEPROM */
8803 err = iwl4965_eeprom_init(priv);
8804 if (err) {
8805 IWL_ERROR("Unable to init EEPROM\n");
8806 goto out_remove_sysfs;
8807 }
8808 /* MAC Address location in EEPROM same for 3945/4965 */
8809 get_eeprom_mac(priv, priv->mac_addr);
8810 IWL_DEBUG_INFO("MAC address: %s\n", print_mac(mac, priv->mac_addr));
8811 SET_IEEE80211_PERM_ADDR(priv->hw, priv->mac_addr);
8812
8813 err = iwl4965_init_channel_map(priv);
8814 if (err) {
8815 IWL_ERROR("initializing regulatory failed: %d\n", err);
8816 goto out_remove_sysfs;
8817 }
8818
8819 err = iwl4965_init_geos(priv);
8820 if (err) {
8821 IWL_ERROR("initializing geos failed: %d\n", err);
8822 goto out_free_channel_map;
8823 }
8824
8825 iwl4965_rate_control_register(priv->hw);
8826 err = ieee80211_register_hw(priv->hw);
8827 if (err) {
8828 IWL_ERROR("Failed to register network device (error %d)\n", err);
8829 goto out_free_geos;
8830 }
8831
8832 priv->hw->conf.beacon_int = 100;
8833 priv->mac80211_registered = 1;
8834 pci_save_state(pdev);
8835 pci_disable_device(pdev);
8836
8837 return 0;
8838
8839 out_free_geos:
8840 iwl4965_free_geos(priv);
8841 out_free_channel_map:
8842 iwl4965_free_channel_map(priv);
8843 out_remove_sysfs:
8844 sysfs_remove_group(&pdev->dev.kobj, &iwl4965_attribute_group);
8845
8846 out_release_irq:
8847 destroy_workqueue(priv->workqueue);
8848 priv->workqueue = NULL;
8849 iwl4965_unset_hw_setting(priv);
8850
8851 out_iounmap:
8852 pci_iounmap(pdev, priv->hw_base);
8853 out_pci_release_regions:
8854 pci_release_regions(pdev);
8855 out_pci_disable_device:
8856 pci_disable_device(pdev);
8857 pci_set_drvdata(pdev, NULL);
8858 out_ieee80211_free_hw:
8859 ieee80211_free_hw(priv->hw);
8860 out:
8861 return err;
8862 }
8863
8864 static void iwl4965_pci_remove(struct pci_dev *pdev)
8865 {
8866 struct iwl4965_priv *priv = pci_get_drvdata(pdev);
8867 struct list_head *p, *q;
8868 int i;
8869
8870 if (!priv)
8871 return;
8872
8873 IWL_DEBUG_INFO("*** UNLOAD DRIVER ***\n");
8874
8875 set_bit(STATUS_EXIT_PENDING, &priv->status);
8876
8877 iwl4965_down(priv);
8878
8879 /* Free MAC hash list for ADHOC */
8880 for (i = 0; i < IWL_IBSS_MAC_HASH_SIZE; i++) {
8881 list_for_each_safe(p, q, &priv->ibss_mac_hash[i]) {
8882 list_del(p);
8883 kfree(list_entry(p, struct iwl4965_ibss_seq, list));
8884 }
8885 }
8886
8887 sysfs_remove_group(&pdev->dev.kobj, &iwl4965_attribute_group);
8888
8889 iwl4965_dealloc_ucode_pci(priv);
8890
8891 if (priv->rxq.bd)
8892 iwl4965_rx_queue_free(priv, &priv->rxq);
8893 iwl4965_hw_txq_ctx_free(priv);
8894
8895 iwl4965_unset_hw_setting(priv);
8896 iwl4965_clear_stations_table(priv);
8897
8898 if (priv->mac80211_registered) {
8899 ieee80211_unregister_hw(priv->hw);
8900 iwl4965_rate_control_unregister(priv->hw);
8901 }
8902
8903 /*netif_stop_queue(dev); */
8904 flush_workqueue(priv->workqueue);
8905
8906 /* ieee80211_unregister_hw calls iwl4965_mac_stop, which flushes
8907 * priv->workqueue... so we can't take down the workqueue
8908 * until now... */
8909 destroy_workqueue(priv->workqueue);
8910 priv->workqueue = NULL;
8911
8912 pci_iounmap(pdev, priv->hw_base);
8913 pci_release_regions(pdev);
8914 pci_disable_device(pdev);
8915 pci_set_drvdata(pdev, NULL);
8916
8917 iwl4965_free_channel_map(priv);
8918 iwl4965_free_geos(priv);
8919
8920 if (priv->ibss_beacon)
8921 dev_kfree_skb(priv->ibss_beacon);
8922
8923 ieee80211_free_hw(priv->hw);
8924 }
8925
8926 #ifdef CONFIG_PM
8927
8928 static int iwl4965_pci_suspend(struct pci_dev *pdev, pm_message_t state)
8929 {
8930 struct iwl4965_priv *priv = pci_get_drvdata(pdev);
8931
8932 if (priv->is_open) {
8933 set_bit(STATUS_IN_SUSPEND, &priv->status);
8934 iwl4965_mac_stop(priv->hw);
8935 priv->is_open = 1;
8936 }
8937
8938 pci_set_power_state(pdev, PCI_D3hot);
8939
8940 return 0;
8941 }
8942
8943 static int iwl4965_pci_resume(struct pci_dev *pdev)
8944 {
8945 struct iwl4965_priv *priv = pci_get_drvdata(pdev);
8946
8947 pci_set_power_state(pdev, PCI_D0);
8948
8949 if (priv->is_open)
8950 iwl4965_mac_start(priv->hw);
8951
8952 clear_bit(STATUS_IN_SUSPEND, &priv->status);
8953 return 0;
8954 }
8955
8956 #endif /* CONFIG_PM */
8957
8958 /*****************************************************************************
8959 *
8960 * driver and module entry point
8961 *
8962 *****************************************************************************/
8963
8964 static struct pci_driver iwl4965_driver = {
8965 .name = DRV_NAME,
8966 .id_table = iwl4965_hw_card_ids,
8967 .probe = iwl4965_pci_probe,
8968 .remove = __devexit_p(iwl4965_pci_remove),
8969 #ifdef CONFIG_PM
8970 .suspend = iwl4965_pci_suspend,
8971 .resume = iwl4965_pci_resume,
8972 #endif
8973 };
8974
8975 static int __init iwl4965_init(void)
8976 {
8977
8978 int ret;
8979 printk(KERN_INFO DRV_NAME ": " DRV_DESCRIPTION ", " DRV_VERSION "\n");
8980 printk(KERN_INFO DRV_NAME ": " DRV_COPYRIGHT "\n");
8981 ret = pci_register_driver(&iwl4965_driver);
8982 if (ret) {
8983 IWL_ERROR("Unable to initialize PCI module\n");
8984 return ret;
8985 }
8986 #ifdef CONFIG_IWL4965_DEBUG
8987 ret = driver_create_file(&iwl4965_driver.driver, &driver_attr_debug_level);
8988 if (ret) {
8989 IWL_ERROR("Unable to create driver sysfs file\n");
8990 pci_unregister_driver(&iwl4965_driver);
8991 return ret;
8992 }
8993 #endif
8994
8995 return ret;
8996 }
8997
8998 static void __exit iwl4965_exit(void)
8999 {
9000 #ifdef CONFIG_IWL4965_DEBUG
9001 driver_remove_file(&iwl4965_driver.driver, &driver_attr_debug_level);
9002 #endif
9003 pci_unregister_driver(&iwl4965_driver);
9004 }
9005
9006 module_param_named(antenna, iwl4965_param_antenna, int, 0444);
9007 MODULE_PARM_DESC(antenna, "select antenna (1=Main, 2=Aux, default 0 [both])");
9008 module_param_named(disable, iwl4965_param_disable, int, 0444);
9009 MODULE_PARM_DESC(disable, "manually disable the radio (default 0 [radio on])");
9010 module_param_named(hwcrypto, iwl4965_param_hwcrypto, int, 0444);
9011 MODULE_PARM_DESC(hwcrypto,
9012 "using hardware crypto engine (default 0 [software])\n");
9013 module_param_named(debug, iwl4965_param_debug, int, 0444);
9014 MODULE_PARM_DESC(debug, "debug output mask");
9015 module_param_named(disable_hw_scan, iwl4965_param_disable_hw_scan, int, 0444);
9016 MODULE_PARM_DESC(disable_hw_scan, "disable hardware scanning (default 0)");
9017
9018 module_param_named(queues_num, iwl4965_param_queues_num, int, 0444);
9019 MODULE_PARM_DESC(queues_num, "number of hw queues.");
9020
9021 /* QoS */
9022 module_param_named(qos_enable, iwl4965_param_qos_enable, int, 0444);
9023 MODULE_PARM_DESC(qos_enable, "enable all QoS functionality");
9024 module_param_named(amsdu_size_8K, iwl4965_param_amsdu_size_8K, int, 0444);
9025 MODULE_PARM_DESC(amsdu_size_8K, "enable 8K amsdu size");
9026
9027 module_exit(iwl4965_exit);
9028 module_init(iwl4965_init);
Linux kernel - Deliverables
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