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iwlwifi: Cancel scanning upon association
[linux-2.6/sactl.git] / drivers / net / wireless / iwlwifi / iwl3945-base.c
blob4aaced0b9f2682b95352bf5cc93f421cf38786da
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/ieee80211_radiotap.h>
45 #include <net/mac80211.h>
46
47 #include <asm/div64.h>
48
49 #include "iwl-3945-core.h"
50 #include "iwl-3945.h"
51 #include "iwl-helpers.h"
52
53 #ifdef CONFIG_IWL3945_DEBUG
54 u32 iwl3945_debug_level;
55 #endif
56
57 static int iwl3945_tx_queue_update_write_ptr(struct iwl3945_priv *priv,
58 struct iwl3945_tx_queue *txq);
59
60 /******************************************************************************
61 *
62 * module boiler plate
63 *
64 ******************************************************************************/
65
66 /* module parameters */
67 static int iwl3945_param_disable_hw_scan; /* def: 0 = use 3945's h/w scan */
68 static int iwl3945_param_debug; /* def: 0 = minimal debug log messages */
69 static int iwl3945_param_disable; /* def: 0 = enable radio */
70 static int iwl3945_param_antenna; /* def: 0 = both antennas (use diversity) */
71 int iwl3945_param_hwcrypto; /* def: 0 = use software encryption */
72 static int iwl3945_param_qos_enable = 1; /* def: 1 = use quality of service */
73 int iwl3945_param_queues_num = IWL_MAX_NUM_QUEUES; /* def: 8 Tx queues */
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 \
81 "Intel(R) PRO/Wireless 3945ABG/BG Network Connection driver for Linux"
82
83 #ifdef CONFIG_IWL3945_DEBUG
84 #define VD "d"
85 #else
86 #define VD
87 #endif
88
89 #ifdef CONFIG_IWL3945_SPECTRUM_MEASUREMENT
90 #define VS "s"
91 #else
92 #define VS
93 #endif
94
95 #define IWLWIFI_VERSION "1.2.26k" VD VS
96 #define DRV_COPYRIGHT "Copyright(c) 2003-2007 Intel Corporation"
97 #define DRV_VERSION IWLWIFI_VERSION
98
99
100 MODULE_DESCRIPTION(DRV_DESCRIPTION);
101 MODULE_VERSION(DRV_VERSION);
102 MODULE_AUTHOR(DRV_COPYRIGHT);
103 MODULE_LICENSE("GPL");
104
105 static __le16 *ieee80211_get_qos_ctrl(struct ieee80211_hdr *hdr)
106 {
107 u16 fc = le16_to_cpu(hdr->frame_control);
108 int hdr_len = ieee80211_get_hdrlen(fc);
109
110 if ((fc & 0x00cc) == (IEEE80211_STYPE_QOS_DATA | IEEE80211_FTYPE_DATA))
111 return (__le16 *) ((u8 *) hdr + hdr_len - QOS_CONTROL_LEN);
112 return NULL;
113 }
114
115 static const struct ieee80211_supported_band *iwl3945_get_band(
116 struct iwl3945_priv *priv, enum ieee80211_band band)
117 {
118 return priv->hw->wiphy->bands[band];
119 }
120
121 static int iwl3945_is_empty_essid(const char *essid, int essid_len)
122 {
123 /* Single white space is for Linksys APs */
124 if (essid_len == 1 && essid[0] == ' ')
125 return 1;
126
127 /* Otherwise, if the entire essid is 0, we assume it is hidden */
128 while (essid_len) {
129 essid_len--;
130 if (essid[essid_len] != '\0')
131 return 0;
132 }
133
134 return 1;
135 }
136
137 static const char *iwl3945_escape_essid(const char *essid, u8 essid_len)
138 {
139 static char escaped[IW_ESSID_MAX_SIZE * 2 + 1];
140 const char *s = essid;
141 char *d = escaped;
142
143 if (iwl3945_is_empty_essid(essid, essid_len)) {
144 memcpy(escaped, "<hidden>", sizeof("<hidden>"));
145 return escaped;
146 }
147
148 essid_len = min(essid_len, (u8) IW_ESSID_MAX_SIZE);
149 while (essid_len--) {
150 if (*s == '\0') {
151 *d++ = '\\';
152 *d++ = '0';
153 s++;
154 } else
155 *d++ = *s++;
156 }
157 *d = '\0';
158 return escaped;
159 }
160
161 /*************** DMA-QUEUE-GENERAL-FUNCTIONS *****
162 * DMA services
163 *
164 * Theory of operation
165 *
166 * A Tx or Rx queue resides in host DRAM, and is comprised of a circular buffer
167 * of buffer descriptors, each of which points to one or more data buffers for
168 * the device to read from or fill. Driver and device exchange status of each
169 * queue via "read" and "write" pointers. Driver keeps minimum of 2 empty
170 * entries in each circular buffer, to protect against confusing empty and full
171 * queue states.
172 *
173 * The device reads or writes the data in the queues via the device's several
174 * DMA/FIFO channels. Each queue is mapped to a single DMA channel.
175 *
176 * For Tx queue, there are low mark and high mark limits. If, after queuing
177 * the packet for Tx, free space become < low mark, Tx queue stopped. When
178 * reclaiming packets (on 'tx done IRQ), if free space become > high mark,
179 * Tx queue resumed.
180 *
181 * The 3945 operates with six queues: One receive queue, one transmit queue
182 * (#4) for sending commands to the device firmware, and four transmit queues
183 * (#0-3) for data tx via EDCA. An additional 2 HCCA queues are unused.
184 ***************************************************/
185
186 static int iwl3945_queue_space(const struct iwl3945_queue *q)
187 {
188 int s = q->read_ptr - q->write_ptr;
189
190 if (q->read_ptr > q->write_ptr)
191 s -= q->n_bd;
192
193 if (s <= 0)
194 s += q->n_window;
195 /* keep some reserve to not confuse empty and full situations */
196 s -= 2;
197 if (s < 0)
198 s = 0;
199 return s;
200 }
201
202 /**
203 * iwl3945_queue_inc_wrap - increment queue index, wrap back to beginning
204 * @index -- current index
205 * @n_bd -- total number of entries in queue (must be power of 2)
206 */
207 static inline int iwl3945_queue_inc_wrap(int index, int n_bd)
208 {
209 return ++index & (n_bd - 1);
210 }
211
212 /**
213 * iwl3945_queue_dec_wrap - increment queue index, wrap back to end
214 * @index -- current index
215 * @n_bd -- total number of entries in queue (must be power of 2)
216 */
217 static inline int iwl3945_queue_dec_wrap(int index, int n_bd)
218 {
219 return --index & (n_bd - 1);
220 }
221
222 static inline int x2_queue_used(const struct iwl3945_queue *q, int i)
223 {
224 return q->write_ptr > q->read_ptr ?
225 (i >= q->read_ptr && i < q->write_ptr) :
226 !(i < q->read_ptr && i >= q->write_ptr);
227 }
228
229 static inline u8 get_cmd_index(struct iwl3945_queue *q, u32 index, int is_huge)
230 {
231 /* This is for scan command, the big buffer at end of command array */
232 if (is_huge)
233 return q->n_window; /* must be power of 2 */
234
235 /* Otherwise, use normal size buffers */
236 return index & (q->n_window - 1);
237 }
238
239 /**
240 * iwl3945_queue_init - Initialize queue's high/low-water and read/write indexes
241 */
242 static int iwl3945_queue_init(struct iwl3945_priv *priv, struct iwl3945_queue *q,
243 int count, int slots_num, u32 id)
244 {
245 q->n_bd = count;
246 q->n_window = slots_num;
247 q->id = id;
248
249 /* count must be power-of-two size, otherwise iwl3945_queue_inc_wrap
250 * and iwl3945_queue_dec_wrap are broken. */
251 BUG_ON(!is_power_of_2(count));
252
253 /* slots_num must be power-of-two size, otherwise
254 * get_cmd_index is broken. */
255 BUG_ON(!is_power_of_2(slots_num));
256
257 q->low_mark = q->n_window / 4;
258 if (q->low_mark < 4)
259 q->low_mark = 4;
260
261 q->high_mark = q->n_window / 8;
262 if (q->high_mark < 2)
263 q->high_mark = 2;
264
265 q->write_ptr = q->read_ptr = 0;
266
267 return 0;
268 }
269
270 /**
271 * iwl3945_tx_queue_alloc - Alloc driver data and TFD CB for one Tx/cmd queue
272 */
273 static int iwl3945_tx_queue_alloc(struct iwl3945_priv *priv,
274 struct iwl3945_tx_queue *txq, u32 id)
275 {
276 struct pci_dev *dev = priv->pci_dev;
277
278 /* Driver private data, only for Tx (not command) queues,
279 * not shared with device. */
280 if (id != IWL_CMD_QUEUE_NUM) {
281 txq->txb = kmalloc(sizeof(txq->txb[0]) *
282 TFD_QUEUE_SIZE_MAX, GFP_KERNEL);
283 if (!txq->txb) {
284 IWL_ERROR("kmalloc for auxiliary BD "
285 "structures failed\n");
286 goto error;
287 }
288 } else
289 txq->txb = NULL;
290
291 /* Circular buffer of transmit frame descriptors (TFDs),
292 * shared with device */
293 txq->bd = pci_alloc_consistent(dev,
294 sizeof(txq->bd[0]) * TFD_QUEUE_SIZE_MAX,
295 &txq->q.dma_addr);
296
297 if (!txq->bd) {
298 IWL_ERROR("pci_alloc_consistent(%zd) failed\n",
299 sizeof(txq->bd[0]) * TFD_QUEUE_SIZE_MAX);
300 goto error;
301 }
302 txq->q.id = id;
303
304 return 0;
305
306 error:
307 if (txq->txb) {
308 kfree(txq->txb);
309 txq->txb = NULL;
310 }
311
312 return -ENOMEM;
313 }
314
315 /**
316 * iwl3945_tx_queue_init - Allocate and initialize one tx/cmd queue
317 */
318 int iwl3945_tx_queue_init(struct iwl3945_priv *priv,
319 struct iwl3945_tx_queue *txq, int slots_num, u32 txq_id)
320 {
321 struct pci_dev *dev = priv->pci_dev;
322 int len;
323 int rc = 0;
324
325 /*
326 * Alloc buffer array for commands (Tx or other types of commands).
327 * For the command queue (#4), allocate command space + one big
328 * command for scan, since scan command is very huge; the system will
329 * not have two scans at the same time, so only one is needed.
330 * For data Tx queues (all other queues), no super-size command
331 * space is needed.
332 */
333 len = sizeof(struct iwl3945_cmd) * slots_num;
334 if (txq_id == IWL_CMD_QUEUE_NUM)
335 len += IWL_MAX_SCAN_SIZE;
336 txq->cmd = pci_alloc_consistent(dev, len, &txq->dma_addr_cmd);
337 if (!txq->cmd)
338 return -ENOMEM;
339
340 /* Alloc driver data array and TFD circular buffer */
341 rc = iwl3945_tx_queue_alloc(priv, txq, txq_id);
342 if (rc) {
343 pci_free_consistent(dev, len, txq->cmd, txq->dma_addr_cmd);
344
345 return -ENOMEM;
346 }
347 txq->need_update = 0;
348
349 /* TFD_QUEUE_SIZE_MAX must be power-of-two size, otherwise
350 * iwl3945_queue_inc_wrap and iwl3945_queue_dec_wrap are broken. */
351 BUILD_BUG_ON(TFD_QUEUE_SIZE_MAX & (TFD_QUEUE_SIZE_MAX - 1));
352
353 /* Initialize queue high/low-water, head/tail indexes */
354 iwl3945_queue_init(priv, &txq->q, TFD_QUEUE_SIZE_MAX, slots_num, txq_id);
355
356 /* Tell device where to find queue, enable DMA channel. */
357 iwl3945_hw_tx_queue_init(priv, txq);
358
359 return 0;
360 }
361
362 /**
363 * iwl3945_tx_queue_free - Deallocate DMA queue.
364 * @txq: Transmit queue to deallocate.
365 *
366 * Empty queue by removing and destroying all BD's.
367 * Free all buffers.
368 * 0-fill, but do not free "txq" descriptor structure.
369 */
370 void iwl3945_tx_queue_free(struct iwl3945_priv *priv, struct iwl3945_tx_queue *txq)
371 {
372 struct iwl3945_queue *q = &txq->q;
373 struct pci_dev *dev = priv->pci_dev;
374 int len;
375
376 if (q->n_bd == 0)
377 return;
378
379 /* first, empty all BD's */
380 for (; q->write_ptr != q->read_ptr;
381 q->read_ptr = iwl3945_queue_inc_wrap(q->read_ptr, q->n_bd))
382 iwl3945_hw_txq_free_tfd(priv, txq);
383
384 len = sizeof(struct iwl3945_cmd) * q->n_window;
385 if (q->id == IWL_CMD_QUEUE_NUM)
386 len += IWL_MAX_SCAN_SIZE;
387
388 /* De-alloc array of command/tx buffers */
389 pci_free_consistent(dev, len, txq->cmd, txq->dma_addr_cmd);
390
391 /* De-alloc circular buffer of TFDs */
392 if (txq->q.n_bd)
393 pci_free_consistent(dev, sizeof(struct iwl3945_tfd_frame) *
394 txq->q.n_bd, txq->bd, txq->q.dma_addr);
395
396 /* De-alloc array of per-TFD driver data */
397 if (txq->txb) {
398 kfree(txq->txb);
399 txq->txb = NULL;
400 }
401
402 /* 0-fill queue descriptor structure */
403 memset(txq, 0, sizeof(*txq));
404 }
405
406 const u8 iwl3945_broadcast_addr[ETH_ALEN] = { 0xFF, 0xFF, 0xFF, 0xFF, 0xFF, 0xFF };
407
408 /*************** STATION TABLE MANAGEMENT ****
409 * mac80211 should be examined to determine if sta_info is duplicating
410 * the functionality provided here
411 */
412
413 /**************************************************************/
414 #if 0 /* temporary disable till we add real remove station */
415 /**
416 * iwl3945_remove_station - Remove driver's knowledge of station.
417 *
418 * NOTE: This does not remove station from device's station table.
419 */
420 static u8 iwl3945_remove_station(struct iwl3945_priv *priv, const u8 *addr, int is_ap)
421 {
422 int index = IWL_INVALID_STATION;
423 int i;
424 unsigned long flags;
425
426 spin_lock_irqsave(&priv->sta_lock, flags);
427
428 if (is_ap)
429 index = IWL_AP_ID;
430 else if (is_broadcast_ether_addr(addr))
431 index = priv->hw_setting.bcast_sta_id;
432 else
433 for (i = IWL_STA_ID; i < priv->hw_setting.max_stations; i++)
434 if (priv->stations[i].used &&
435 !compare_ether_addr(priv->stations[i].sta.sta.addr,
436 addr)) {
437 index = i;
438 break;
439 }
440
441 if (unlikely(index == IWL_INVALID_STATION))
442 goto out;
443
444 if (priv->stations[index].used) {
445 priv->stations[index].used = 0;
446 priv->num_stations--;
447 }
448
449 BUG_ON(priv->num_stations < 0);
450
451 out:
452 spin_unlock_irqrestore(&priv->sta_lock, flags);
453 return 0;
454 }
455 #endif
456
457 /**
458 * iwl3945_clear_stations_table - Clear the driver's station table
459 *
460 * NOTE: This does not clear or otherwise alter the device's station table.
461 */
462 static void iwl3945_clear_stations_table(struct iwl3945_priv *priv)
463 {
464 unsigned long flags;
465
466 spin_lock_irqsave(&priv->sta_lock, flags);
467
468 priv->num_stations = 0;
469 memset(priv->stations, 0, sizeof(priv->stations));
470
471 spin_unlock_irqrestore(&priv->sta_lock, flags);
472 }
473
474 /**
475 * iwl3945_add_station - Add station to station tables in driver and device
476 */
477 u8 iwl3945_add_station(struct iwl3945_priv *priv, const u8 *addr, int is_ap, u8 flags)
478 {
479 int i;
480 int index = IWL_INVALID_STATION;
481 struct iwl3945_station_entry *station;
482 unsigned long flags_spin;
483 DECLARE_MAC_BUF(mac);
484 u8 rate;
485
486 spin_lock_irqsave(&priv->sta_lock, flags_spin);
487 if (is_ap)
488 index = IWL_AP_ID;
489 else if (is_broadcast_ether_addr(addr))
490 index = priv->hw_setting.bcast_sta_id;
491 else
492 for (i = IWL_STA_ID; i < priv->hw_setting.max_stations; i++) {
493 if (!compare_ether_addr(priv->stations[i].sta.sta.addr,
494 addr)) {
495 index = i;
496 break;
497 }
498
499 if (!priv->stations[i].used &&
500 index == IWL_INVALID_STATION)
501 index = i;
502 }
503
504 /* These two conditions has the same outcome but keep them separate
505 since they have different meaning */
506 if (unlikely(index == IWL_INVALID_STATION)) {
507 spin_unlock_irqrestore(&priv->sta_lock, flags_spin);
508 return index;
509 }
510
511 if (priv->stations[index].used &&
512 !compare_ether_addr(priv->stations[index].sta.sta.addr, addr)) {
513 spin_unlock_irqrestore(&priv->sta_lock, flags_spin);
514 return index;
515 }
516
517 IWL_DEBUG_ASSOC("Add STA ID %d: %s\n", index, print_mac(mac, addr));
518 station = &priv->stations[index];
519 station->used = 1;
520 priv->num_stations++;
521
522 /* Set up the REPLY_ADD_STA command to send to device */
523 memset(&station->sta, 0, sizeof(struct iwl3945_addsta_cmd));
524 memcpy(station->sta.sta.addr, addr, ETH_ALEN);
525 station->sta.mode = 0;
526 station->sta.sta.sta_id = index;
527 station->sta.station_flags = 0;
528
529 if (priv->band == IEEE80211_BAND_5GHZ)
530 rate = IWL_RATE_6M_PLCP;
531 else
532 rate = IWL_RATE_1M_PLCP;
533
534 /* Turn on both antennas for the station... */
535 station->sta.rate_n_flags =
536 iwl3945_hw_set_rate_n_flags(rate, RATE_MCS_ANT_AB_MSK);
537 station->current_rate.rate_n_flags =
538 le16_to_cpu(station->sta.rate_n_flags);
539
540 spin_unlock_irqrestore(&priv->sta_lock, flags_spin);
541
542 /* Add station to device's station table */
543 iwl3945_send_add_station(priv, &station->sta, flags);
544 return index;
545
546 }
547
548 /*************** DRIVER STATUS FUNCTIONS *****/
549
550 static inline int iwl3945_is_ready(struct iwl3945_priv *priv)
551 {
552 /* The adapter is 'ready' if READY and GEO_CONFIGURED bits are
553 * set but EXIT_PENDING is not */
554 return test_bit(STATUS_READY, &priv->status) &&
555 test_bit(STATUS_GEO_CONFIGURED, &priv->status) &&
556 !test_bit(STATUS_EXIT_PENDING, &priv->status);
557 }
558
559 static inline int iwl3945_is_alive(struct iwl3945_priv *priv)
560 {
561 return test_bit(STATUS_ALIVE, &priv->status);
562 }
563
564 static inline int iwl3945_is_init(struct iwl3945_priv *priv)
565 {
566 return test_bit(STATUS_INIT, &priv->status);
567 }
568
569 static inline int iwl3945_is_rfkill(struct iwl3945_priv *priv)
570 {
571 return test_bit(STATUS_RF_KILL_HW, &priv->status) ||
572 test_bit(STATUS_RF_KILL_SW, &priv->status);
573 }
574
575 static inline int iwl3945_is_ready_rf(struct iwl3945_priv *priv)
576 {
577
578 if (iwl3945_is_rfkill(priv))
579 return 0;
580
581 return iwl3945_is_ready(priv);
582 }
583
584 /*************** HOST COMMAND QUEUE FUNCTIONS *****/
585
586 #define IWL_CMD(x) case x : return #x
587
588 static const char *get_cmd_string(u8 cmd)
589 {
590 switch (cmd) {
591 IWL_CMD(REPLY_ALIVE);
592 IWL_CMD(REPLY_ERROR);
593 IWL_CMD(REPLY_RXON);
594 IWL_CMD(REPLY_RXON_ASSOC);
595 IWL_CMD(REPLY_QOS_PARAM);
596 IWL_CMD(REPLY_RXON_TIMING);
597 IWL_CMD(REPLY_ADD_STA);
598 IWL_CMD(REPLY_REMOVE_STA);
599 IWL_CMD(REPLY_REMOVE_ALL_STA);
600 IWL_CMD(REPLY_3945_RX);
601 IWL_CMD(REPLY_TX);
602 IWL_CMD(REPLY_RATE_SCALE);
603 IWL_CMD(REPLY_LEDS_CMD);
604 IWL_CMD(REPLY_TX_LINK_QUALITY_CMD);
605 IWL_CMD(RADAR_NOTIFICATION);
606 IWL_CMD(REPLY_QUIET_CMD);
607 IWL_CMD(REPLY_CHANNEL_SWITCH);
608 IWL_CMD(CHANNEL_SWITCH_NOTIFICATION);
609 IWL_CMD(REPLY_SPECTRUM_MEASUREMENT_CMD);
610 IWL_CMD(SPECTRUM_MEASURE_NOTIFICATION);
611 IWL_CMD(POWER_TABLE_CMD);
612 IWL_CMD(PM_SLEEP_NOTIFICATION);
613 IWL_CMD(PM_DEBUG_STATISTIC_NOTIFIC);
614 IWL_CMD(REPLY_SCAN_CMD);
615 IWL_CMD(REPLY_SCAN_ABORT_CMD);
616 IWL_CMD(SCAN_START_NOTIFICATION);
617 IWL_CMD(SCAN_RESULTS_NOTIFICATION);
618 IWL_CMD(SCAN_COMPLETE_NOTIFICATION);
619 IWL_CMD(BEACON_NOTIFICATION);
620 IWL_CMD(REPLY_TX_BEACON);
621 IWL_CMD(WHO_IS_AWAKE_NOTIFICATION);
622 IWL_CMD(QUIET_NOTIFICATION);
623 IWL_CMD(REPLY_TX_PWR_TABLE_CMD);
624 IWL_CMD(MEASURE_ABORT_NOTIFICATION);
625 IWL_CMD(REPLY_BT_CONFIG);
626 IWL_CMD(REPLY_STATISTICS_CMD);
627 IWL_CMD(STATISTICS_NOTIFICATION);
628 IWL_CMD(REPLY_CARD_STATE_CMD);
629 IWL_CMD(CARD_STATE_NOTIFICATION);
630 IWL_CMD(MISSED_BEACONS_NOTIFICATION);
631 default:
632 return "UNKNOWN";
633
634 }
635 }
636
637 #define HOST_COMPLETE_TIMEOUT (HZ / 2)
638
639 /**
640 * iwl3945_enqueue_hcmd - enqueue a uCode command
641 * @priv: device private data point
642 * @cmd: a point to the ucode command structure
643 *
644 * The function returns < 0 values to indicate the operation is
645 * failed. On success, it turns the index (> 0) of command in the
646 * command queue.
647 */
648 static int iwl3945_enqueue_hcmd(struct iwl3945_priv *priv, struct iwl3945_host_cmd *cmd)
649 {
650 struct iwl3945_tx_queue *txq = &priv->txq[IWL_CMD_QUEUE_NUM];
651 struct iwl3945_queue *q = &txq->q;
652 struct iwl3945_tfd_frame *tfd;
653 u32 *control_flags;
654 struct iwl3945_cmd *out_cmd;
655 u32 idx;
656 u16 fix_size = (u16)(cmd->len + sizeof(out_cmd->hdr));
657 dma_addr_t phys_addr;
658 int pad;
659 u16 count;
660 int ret;
661 unsigned long flags;
662
663 /* If any of the command structures end up being larger than
664 * the TFD_MAX_PAYLOAD_SIZE, and it sent as a 'small' command then
665 * we will need to increase the size of the TFD entries */
666 BUG_ON((fix_size > TFD_MAX_PAYLOAD_SIZE) &&
667 !(cmd->meta.flags & CMD_SIZE_HUGE));
668
669
670 if (iwl3945_is_rfkill(priv)) {
671 IWL_DEBUG_INFO("Not sending command - RF KILL");
672 return -EIO;
673 }
674
675 if (iwl3945_queue_space(q) < ((cmd->meta.flags & CMD_ASYNC) ? 2 : 1)) {
676 IWL_ERROR("No space for Tx\n");
677 return -ENOSPC;
678 }
679
680 spin_lock_irqsave(&priv->hcmd_lock, flags);
681
682 tfd = &txq->bd[q->write_ptr];
683 memset(tfd, 0, sizeof(*tfd));
684
685 control_flags = (u32 *) tfd;
686
687 idx = get_cmd_index(q, q->write_ptr, cmd->meta.flags & CMD_SIZE_HUGE);
688 out_cmd = &txq->cmd[idx];
689
690 out_cmd->hdr.cmd = cmd->id;
691 memcpy(&out_cmd->meta, &cmd->meta, sizeof(cmd->meta));
692 memcpy(&out_cmd->cmd.payload, cmd->data, cmd->len);
693
694 /* At this point, the out_cmd now has all of the incoming cmd
695 * information */
696
697 out_cmd->hdr.flags = 0;
698 out_cmd->hdr.sequence = cpu_to_le16(QUEUE_TO_SEQ(IWL_CMD_QUEUE_NUM) |
699 INDEX_TO_SEQ(q->write_ptr));
700 if (out_cmd->meta.flags & CMD_SIZE_HUGE)
701 out_cmd->hdr.sequence |= cpu_to_le16(SEQ_HUGE_FRAME);
702
703 phys_addr = txq->dma_addr_cmd + sizeof(txq->cmd[0]) * idx +
704 offsetof(struct iwl3945_cmd, hdr);
705 iwl3945_hw_txq_attach_buf_to_tfd(priv, tfd, phys_addr, fix_size);
706
707 pad = U32_PAD(cmd->len);
708 count = TFD_CTL_COUNT_GET(*control_flags);
709 *control_flags = TFD_CTL_COUNT_SET(count) | TFD_CTL_PAD_SET(pad);
710
711 IWL_DEBUG_HC("Sending command %s (#%x), seq: 0x%04X, "
712 "%d bytes at %d[%d]:%d\n",
713 get_cmd_string(out_cmd->hdr.cmd),
714 out_cmd->hdr.cmd, le16_to_cpu(out_cmd->hdr.sequence),
715 fix_size, q->write_ptr, idx, IWL_CMD_QUEUE_NUM);
716
717 txq->need_update = 1;
718
719 /* Increment and update queue's write index */
720 q->write_ptr = iwl3945_queue_inc_wrap(q->write_ptr, q->n_bd);
721 ret = iwl3945_tx_queue_update_write_ptr(priv, txq);
722
723 spin_unlock_irqrestore(&priv->hcmd_lock, flags);
724 return ret ? ret : idx;
725 }
726
727 static int iwl3945_send_cmd_async(struct iwl3945_priv *priv, struct iwl3945_host_cmd *cmd)
728 {
729 int ret;
730
731 BUG_ON(!(cmd->meta.flags & CMD_ASYNC));
732
733 /* An asynchronous command can not expect an SKB to be set. */
734 BUG_ON(cmd->meta.flags & CMD_WANT_SKB);
735
736 /* An asynchronous command MUST have a callback. */
737 BUG_ON(!cmd->meta.u.callback);
738
739 if (test_bit(STATUS_EXIT_PENDING, &priv->status))
740 return -EBUSY;
741
742 ret = iwl3945_enqueue_hcmd(priv, cmd);
743 if (ret < 0) {
744 IWL_ERROR("Error sending %s: iwl3945_enqueue_hcmd failed: %d\n",
745 get_cmd_string(cmd->id), ret);
746 return ret;
747 }
748 return 0;
749 }
750
751 static int iwl3945_send_cmd_sync(struct iwl3945_priv *priv, struct iwl3945_host_cmd *cmd)
752 {
753 int cmd_idx;
754 int ret;
755 static atomic_t entry = ATOMIC_INIT(0); /* reentrance protection */
756
757 BUG_ON(cmd->meta.flags & CMD_ASYNC);
758
759 /* A synchronous command can not have a callback set. */
760 BUG_ON(cmd->meta.u.callback != NULL);
761
762 if (atomic_xchg(&entry, 1)) {
763 IWL_ERROR("Error sending %s: Already sending a host command\n",
764 get_cmd_string(cmd->id));
765 return -EBUSY;
766 }
767
768 set_bit(STATUS_HCMD_ACTIVE, &priv->status);
769
770 if (cmd->meta.flags & CMD_WANT_SKB)
771 cmd->meta.source = &cmd->meta;
772
773 cmd_idx = iwl3945_enqueue_hcmd(priv, cmd);
774 if (cmd_idx < 0) {
775 ret = cmd_idx;
776 IWL_ERROR("Error sending %s: iwl3945_enqueue_hcmd failed: %d\n",
777 get_cmd_string(cmd->id), ret);
778 goto out;
779 }
780
781 ret = wait_event_interruptible_timeout(priv->wait_command_queue,
782 !test_bit(STATUS_HCMD_ACTIVE, &priv->status),
783 HOST_COMPLETE_TIMEOUT);
784 if (!ret) {
785 if (test_bit(STATUS_HCMD_ACTIVE, &priv->status)) {
786 IWL_ERROR("Error sending %s: time out after %dms.\n",
787 get_cmd_string(cmd->id),
788 jiffies_to_msecs(HOST_COMPLETE_TIMEOUT));
789
790 clear_bit(STATUS_HCMD_ACTIVE, &priv->status);
791 ret = -ETIMEDOUT;
792 goto cancel;
793 }
794 }
795
796 if (test_bit(STATUS_RF_KILL_HW, &priv->status)) {
797 IWL_DEBUG_INFO("Command %s aborted: RF KILL Switch\n",
798 get_cmd_string(cmd->id));
799 ret = -ECANCELED;
800 goto fail;
801 }
802 if (test_bit(STATUS_FW_ERROR, &priv->status)) {
803 IWL_DEBUG_INFO("Command %s failed: FW Error\n",
804 get_cmd_string(cmd->id));
805 ret = -EIO;
806 goto fail;
807 }
808 if ((cmd->meta.flags & CMD_WANT_SKB) && !cmd->meta.u.skb) {
809 IWL_ERROR("Error: Response NULL in '%s'\n",
810 get_cmd_string(cmd->id));
811 ret = -EIO;
812 goto out;
813 }
814
815 ret = 0;
816 goto out;
817
818 cancel:
819 if (cmd->meta.flags & CMD_WANT_SKB) {
820 struct iwl3945_cmd *qcmd;
821
822 /* Cancel the CMD_WANT_SKB flag for the cmd in the
823 * TX cmd queue. Otherwise in case the cmd comes
824 * in later, it will possibly set an invalid
825 * address (cmd->meta.source). */
826 qcmd = &priv->txq[IWL_CMD_QUEUE_NUM].cmd[cmd_idx];
827 qcmd->meta.flags &= ~CMD_WANT_SKB;
828 }
829 fail:
830 if (cmd->meta.u.skb) {
831 dev_kfree_skb_any(cmd->meta.u.skb);
832 cmd->meta.u.skb = NULL;
833 }
834 out:
835 atomic_set(&entry, 0);
836 return ret;
837 }
838
839 int iwl3945_send_cmd(struct iwl3945_priv *priv, struct iwl3945_host_cmd *cmd)
840 {
841 if (cmd->meta.flags & CMD_ASYNC)
842 return iwl3945_send_cmd_async(priv, cmd);
843
844 return iwl3945_send_cmd_sync(priv, cmd);
845 }
846
847 int iwl3945_send_cmd_pdu(struct iwl3945_priv *priv, u8 id, u16 len, const void *data)
848 {
849 struct iwl3945_host_cmd cmd = {
850 .id = id,
851 .len = len,
852 .data = data,
853 };
854
855 return iwl3945_send_cmd_sync(priv, &cmd);
856 }
857
858 static int __must_check iwl3945_send_cmd_u32(struct iwl3945_priv *priv, u8 id, u32 val)
859 {
860 struct iwl3945_host_cmd cmd = {
861 .id = id,
862 .len = sizeof(val),
863 .data = &val,
864 };
865
866 return iwl3945_send_cmd_sync(priv, &cmd);
867 }
868
869 int iwl3945_send_statistics_request(struct iwl3945_priv *priv)
870 {
871 return iwl3945_send_cmd_u32(priv, REPLY_STATISTICS_CMD, 0);
872 }
873
874 /**
875 * iwl3945_set_rxon_channel - Set the phymode and channel values in staging RXON
876 * @band: 2.4 or 5 GHz band
877 * @channel: Any channel valid for the requested band
878
879 * In addition to setting the staging RXON, priv->band is also set.
880 *
881 * NOTE: Does not commit to the hardware; it sets appropriate bit fields
882 * in the staging RXON flag structure based on the band
883 */
884 static int iwl3945_set_rxon_channel(struct iwl3945_priv *priv,
885 enum ieee80211_band band,
886 u16 channel)
887 {
888 if (!iwl3945_get_channel_info(priv, band, channel)) {
889 IWL_DEBUG_INFO("Could not set channel to %d [%d]\n",
890 channel, band);
891 return -EINVAL;
892 }
893
894 if ((le16_to_cpu(priv->staging_rxon.channel) == channel) &&
895 (priv->band == band))
896 return 0;
897
898 priv->staging_rxon.channel = cpu_to_le16(channel);
899 if (band == IEEE80211_BAND_5GHZ)
900 priv->staging_rxon.flags &= ~RXON_FLG_BAND_24G_MSK;
901 else
902 priv->staging_rxon.flags |= RXON_FLG_BAND_24G_MSK;
903
904 priv->band = band;
905
906 IWL_DEBUG_INFO("Staging channel set to %d [%d]\n", channel, band);
907
908 return 0;
909 }
910
911 /**
912 * iwl3945_check_rxon_cmd - validate RXON structure is valid
913 *
914 * NOTE: This is really only useful during development and can eventually
915 * be #ifdef'd out once the driver is stable and folks aren't actively
916 * making changes
917 */
918 static int iwl3945_check_rxon_cmd(struct iwl3945_rxon_cmd *rxon)
919 {
920 int error = 0;
921 int counter = 1;
922
923 if (rxon->flags & RXON_FLG_BAND_24G_MSK) {
924 error |= le32_to_cpu(rxon->flags &
925 (RXON_FLG_TGJ_NARROW_BAND_MSK |
926 RXON_FLG_RADAR_DETECT_MSK));
927 if (error)
928 IWL_WARNING("check 24G fields %d | %d\n",
929 counter++, error);
930 } else {
931 error |= (rxon->flags & RXON_FLG_SHORT_SLOT_MSK) ?
932 0 : le32_to_cpu(RXON_FLG_SHORT_SLOT_MSK);
933 if (error)
934 IWL_WARNING("check 52 fields %d | %d\n",
935 counter++, error);
936 error |= le32_to_cpu(rxon->flags & RXON_FLG_CCK_MSK);
937 if (error)
938 IWL_WARNING("check 52 CCK %d | %d\n",
939 counter++, error);
940 }
941 error |= (rxon->node_addr[0] | rxon->bssid_addr[0]) & 0x1;
942 if (error)
943 IWL_WARNING("check mac addr %d | %d\n", counter++, error);
944
945 /* make sure basic rates 6Mbps and 1Mbps are supported */
946 error |= (((rxon->ofdm_basic_rates & IWL_RATE_6M_MASK) == 0) &&
947 ((rxon->cck_basic_rates & IWL_RATE_1M_MASK) == 0));
948 if (error)
949 IWL_WARNING("check basic rate %d | %d\n", counter++, error);
950
951 error |= (le16_to_cpu(rxon->assoc_id) > 2007);
952 if (error)
953 IWL_WARNING("check assoc id %d | %d\n", counter++, error);
954
955 error |= ((rxon->flags & (RXON_FLG_CCK_MSK | RXON_FLG_SHORT_SLOT_MSK))
956 == (RXON_FLG_CCK_MSK | RXON_FLG_SHORT_SLOT_MSK));
957 if (error)
958 IWL_WARNING("check CCK and short slot %d | %d\n",
959 counter++, error);
960
961 error |= ((rxon->flags & (RXON_FLG_CCK_MSK | RXON_FLG_AUTO_DETECT_MSK))
962 == (RXON_FLG_CCK_MSK | RXON_FLG_AUTO_DETECT_MSK));
963 if (error)
964 IWL_WARNING("check CCK & auto detect %d | %d\n",
965 counter++, error);
966
967 error |= ((rxon->flags & (RXON_FLG_AUTO_DETECT_MSK |
968 RXON_FLG_TGG_PROTECT_MSK)) == RXON_FLG_TGG_PROTECT_MSK);
969 if (error)
970 IWL_WARNING("check TGG and auto detect %d | %d\n",
971 counter++, error);
972
973 if ((rxon->flags & RXON_FLG_DIS_DIV_MSK))
974 error |= ((rxon->flags & (RXON_FLG_ANT_B_MSK |
975 RXON_FLG_ANT_A_MSK)) == 0);
976 if (error)
977 IWL_WARNING("check antenna %d %d\n", counter++, error);
978
979 if (error)
980 IWL_WARNING("Tuning to channel %d\n",
981 le16_to_cpu(rxon->channel));
982
983 if (error) {
984 IWL_ERROR("Not a valid iwl3945_rxon_assoc_cmd field values\n");
985 return -1;
986 }
987 return 0;
988 }
989
990 /**
991 * iwl3945_full_rxon_required - check if full RXON (vs RXON_ASSOC) cmd is needed
992 * @priv: staging_rxon is compared to active_rxon
993 *
994 * If the RXON structure is changing enough to require a new tune,
995 * or is clearing the RXON_FILTER_ASSOC_MSK, then return 1 to indicate that
996 * a new tune (full RXON command, rather than RXON_ASSOC cmd) is required.
997 */
998 static int iwl3945_full_rxon_required(struct iwl3945_priv *priv)
999 {
1000
1001 /* These items are only settable from the full RXON command */
1002 if (!(priv->active_rxon.filter_flags & RXON_FILTER_ASSOC_MSK) ||
1003 compare_ether_addr(priv->staging_rxon.bssid_addr,
1004 priv->active_rxon.bssid_addr) ||
1005 compare_ether_addr(priv->staging_rxon.node_addr,
1006 priv->active_rxon.node_addr) ||
1007 compare_ether_addr(priv->staging_rxon.wlap_bssid_addr,
1008 priv->active_rxon.wlap_bssid_addr) ||
1009 (priv->staging_rxon.dev_type != priv->active_rxon.dev_type) ||
1010 (priv->staging_rxon.channel != priv->active_rxon.channel) ||
1011 (priv->staging_rxon.air_propagation !=
1012 priv->active_rxon.air_propagation) ||
1013 (priv->staging_rxon.assoc_id != priv->active_rxon.assoc_id))
1014 return 1;
1015
1016 /* flags, filter_flags, ofdm_basic_rates, and cck_basic_rates can
1017 * be updated with the RXON_ASSOC command -- however only some
1018 * flag transitions are allowed using RXON_ASSOC */
1019
1020 /* Check if we are not switching bands */
1021 if ((priv->staging_rxon.flags & RXON_FLG_BAND_24G_MSK) !=
1022 (priv->active_rxon.flags & RXON_FLG_BAND_24G_MSK))
1023 return 1;
1024
1025 /* Check if we are switching association toggle */
1026 if ((priv->staging_rxon.filter_flags & RXON_FILTER_ASSOC_MSK) !=
1027 (priv->active_rxon.filter_flags & RXON_FILTER_ASSOC_MSK))
1028 return 1;
1029
1030 return 0;
1031 }
1032
1033 static int iwl3945_send_rxon_assoc(struct iwl3945_priv *priv)
1034 {
1035 int rc = 0;
1036 struct iwl3945_rx_packet *res = NULL;
1037 struct iwl3945_rxon_assoc_cmd rxon_assoc;
1038 struct iwl3945_host_cmd cmd = {
1039 .id = REPLY_RXON_ASSOC,
1040 .len = sizeof(rxon_assoc),
1041 .meta.flags = CMD_WANT_SKB,
1042 .data = &rxon_assoc,
1043 };
1044 const struct iwl3945_rxon_cmd *rxon1 = &priv->staging_rxon;
1045 const struct iwl3945_rxon_cmd *rxon2 = &priv->active_rxon;
1046
1047 if ((rxon1->flags == rxon2->flags) &&
1048 (rxon1->filter_flags == rxon2->filter_flags) &&
1049 (rxon1->cck_basic_rates == rxon2->cck_basic_rates) &&
1050 (rxon1->ofdm_basic_rates == rxon2->ofdm_basic_rates)) {
1051 IWL_DEBUG_INFO("Using current RXON_ASSOC. Not resending.\n");
1052 return 0;
1053 }
1054
1055 rxon_assoc.flags = priv->staging_rxon.flags;
1056 rxon_assoc.filter_flags = priv->staging_rxon.filter_flags;
1057 rxon_assoc.ofdm_basic_rates = priv->staging_rxon.ofdm_basic_rates;
1058 rxon_assoc.cck_basic_rates = priv->staging_rxon.cck_basic_rates;
1059 rxon_assoc.reserved = 0;
1060
1061 rc = iwl3945_send_cmd_sync(priv, &cmd);
1062 if (rc)
1063 return rc;
1064
1065 res = (struct iwl3945_rx_packet *)cmd.meta.u.skb->data;
1066 if (res->hdr.flags & IWL_CMD_FAILED_MSK) {
1067 IWL_ERROR("Bad return from REPLY_RXON_ASSOC command\n");
1068 rc = -EIO;
1069 }
1070
1071 priv->alloc_rxb_skb--;
1072 dev_kfree_skb_any(cmd.meta.u.skb);
1073
1074 return rc;
1075 }
1076
1077 /**
1078 * iwl3945_commit_rxon - commit staging_rxon to hardware
1079 *
1080 * The RXON command in staging_rxon is committed to the hardware and
1081 * the active_rxon structure is updated with the new data. This
1082 * function correctly transitions out of the RXON_ASSOC_MSK state if
1083 * a HW tune is required based on the RXON structure changes.
1084 */
1085 static int iwl3945_commit_rxon(struct iwl3945_priv *priv)
1086 {
1087 /* cast away the const for active_rxon in this function */
1088 struct iwl3945_rxon_cmd *active_rxon = (void *)&priv->active_rxon;
1089 int rc = 0;
1090 DECLARE_MAC_BUF(mac);
1091
1092 if (!iwl3945_is_alive(priv))
1093 return -1;
1094
1095 /* always get timestamp with Rx frame */
1096 priv->staging_rxon.flags |= RXON_FLG_TSF2HOST_MSK;
1097
1098 /* select antenna */
1099 priv->staging_rxon.flags &=
1100 ~(RXON_FLG_DIS_DIV_MSK | RXON_FLG_ANT_SEL_MSK);
1101 priv->staging_rxon.flags |= iwl3945_get_antenna_flags(priv);
1102
1103 rc = iwl3945_check_rxon_cmd(&priv->staging_rxon);
1104 if (rc) {
1105 IWL_ERROR("Invalid RXON configuration. Not committing.\n");
1106 return -EINVAL;
1107 }
1108
1109 /* If we don't need to send a full RXON, we can use
1110 * iwl3945_rxon_assoc_cmd which is used to reconfigure filter
1111 * and other flags for the current radio configuration. */
1112 if (!iwl3945_full_rxon_required(priv)) {
1113 rc = iwl3945_send_rxon_assoc(priv);
1114 if (rc) {
1115 IWL_ERROR("Error setting RXON_ASSOC "
1116 "configuration (%d).\n", rc);
1117 return rc;
1118 }
1119
1120 memcpy(active_rxon, &priv->staging_rxon, sizeof(*active_rxon));
1121
1122 return 0;
1123 }
1124
1125 /* If we are currently associated and the new config requires
1126 * an RXON_ASSOC and the new config wants the associated mask enabled,
1127 * we must clear the associated from the active configuration
1128 * before we apply the new config */
1129 if (iwl3945_is_associated(priv) &&
1130 (priv->staging_rxon.filter_flags & RXON_FILTER_ASSOC_MSK)) {
1131 IWL_DEBUG_INFO("Toggling associated bit on current RXON\n");
1132 active_rxon->filter_flags &= ~RXON_FILTER_ASSOC_MSK;
1133
1134 rc = iwl3945_send_cmd_pdu(priv, REPLY_RXON,
1135 sizeof(struct iwl3945_rxon_cmd),
1136 &priv->active_rxon);
1137
1138 /* If the mask clearing failed then we set
1139 * active_rxon back to what it was previously */
1140 if (rc) {
1141 active_rxon->filter_flags |= RXON_FILTER_ASSOC_MSK;
1142 IWL_ERROR("Error clearing ASSOC_MSK on current "
1143 "configuration (%d).\n", rc);
1144 return rc;
1145 }
1146 }
1147
1148 IWL_DEBUG_INFO("Sending RXON\n"
1149 "* with%s RXON_FILTER_ASSOC_MSK\n"
1150 "* channel = %d\n"
1151 "* bssid = %s\n",
1152 ((priv->staging_rxon.filter_flags &
1153 RXON_FILTER_ASSOC_MSK) ? "" : "out"),
1154 le16_to_cpu(priv->staging_rxon.channel),
1155 print_mac(mac, priv->staging_rxon.bssid_addr));
1156
1157 /* Apply the new configuration */
1158 rc = iwl3945_send_cmd_pdu(priv, REPLY_RXON,
1159 sizeof(struct iwl3945_rxon_cmd), &priv->staging_rxon);
1160 if (rc) {
1161 IWL_ERROR("Error setting new configuration (%d).\n", rc);
1162 return rc;
1163 }
1164
1165 memcpy(active_rxon, &priv->staging_rxon, sizeof(*active_rxon));
1166
1167 iwl3945_clear_stations_table(priv);
1168
1169 /* If we issue a new RXON command which required a tune then we must
1170 * send a new TXPOWER command or we won't be able to Tx any frames */
1171 rc = iwl3945_hw_reg_send_txpower(priv);
1172 if (rc) {
1173 IWL_ERROR("Error setting Tx power (%d).\n", rc);
1174 return rc;
1175 }
1176
1177 /* Add the broadcast address so we can send broadcast frames */
1178 if (iwl3945_add_station(priv, iwl3945_broadcast_addr, 0, 0) ==
1179 IWL_INVALID_STATION) {
1180 IWL_ERROR("Error adding BROADCAST address for transmit.\n");
1181 return -EIO;
1182 }
1183
1184 /* If we have set the ASSOC_MSK and we are in BSS mode then
1185 * add the IWL_AP_ID to the station rate table */
1186 if (iwl3945_is_associated(priv) &&
1187 (priv->iw_mode == IEEE80211_IF_TYPE_STA))
1188 if (iwl3945_add_station(priv, priv->active_rxon.bssid_addr, 1, 0)
1189 == IWL_INVALID_STATION) {
1190 IWL_ERROR("Error adding AP address for transmit.\n");
1191 return -EIO;
1192 }
1193
1194 /* Init the hardware's rate fallback order based on the band */
1195 rc = iwl3945_init_hw_rate_table(priv);
1196 if (rc) {
1197 IWL_ERROR("Error setting HW rate table: %02X\n", rc);
1198 return -EIO;
1199 }
1200
1201 return 0;
1202 }
1203
1204 static int iwl3945_send_bt_config(struct iwl3945_priv *priv)
1205 {
1206 struct iwl3945_bt_cmd bt_cmd = {
1207 .flags = 3,
1208 .lead_time = 0xAA,
1209 .max_kill = 1,
1210 .kill_ack_mask = 0,
1211 .kill_cts_mask = 0,
1212 };
1213
1214 return iwl3945_send_cmd_pdu(priv, REPLY_BT_CONFIG,
1215 sizeof(struct iwl3945_bt_cmd), &bt_cmd);
1216 }
1217
1218 static int iwl3945_send_scan_abort(struct iwl3945_priv *priv)
1219 {
1220 int rc = 0;
1221 struct iwl3945_rx_packet *res;
1222 struct iwl3945_host_cmd cmd = {
1223 .id = REPLY_SCAN_ABORT_CMD,
1224 .meta.flags = CMD_WANT_SKB,
1225 };
1226
1227 /* If there isn't a scan actively going on in the hardware
1228 * then we are in between scan bands and not actually
1229 * actively scanning, so don't send the abort command */
1230 if (!test_bit(STATUS_SCAN_HW, &priv->status)) {
1231 clear_bit(STATUS_SCAN_ABORTING, &priv->status);
1232 return 0;
1233 }
1234
1235 rc = iwl3945_send_cmd_sync(priv, &cmd);
1236 if (rc) {
1237 clear_bit(STATUS_SCAN_ABORTING, &priv->status);
1238 return rc;
1239 }
1240
1241 res = (struct iwl3945_rx_packet *)cmd.meta.u.skb->data;
1242 if (res->u.status != CAN_ABORT_STATUS) {
1243 /* The scan abort will return 1 for success or
1244 * 2 for "failure". A failure condition can be
1245 * due to simply not being in an active scan which
1246 * can occur if we send the scan abort before we
1247 * the microcode has notified us that a scan is
1248 * completed. */
1249 IWL_DEBUG_INFO("SCAN_ABORT returned %d.\n", res->u.status);
1250 clear_bit(STATUS_SCAN_ABORTING, &priv->status);
1251 clear_bit(STATUS_SCAN_HW, &priv->status);
1252 }
1253
1254 dev_kfree_skb_any(cmd.meta.u.skb);
1255
1256 return rc;
1257 }
1258
1259 static int iwl3945_card_state_sync_callback(struct iwl3945_priv *priv,
1260 struct iwl3945_cmd *cmd,
1261 struct sk_buff *skb)
1262 {
1263 return 1;
1264 }
1265
1266 /*
1267 * CARD_STATE_CMD
1268 *
1269 * Use: Sets the device's internal card state to enable, disable, or halt
1270 *
1271 * When in the 'enable' state the card operates as normal.
1272 * When in the 'disable' state, the card enters into a low power mode.
1273 * When in the 'halt' state, the card is shut down and must be fully
1274 * restarted to come back on.
1275 */
1276 static int iwl3945_send_card_state(struct iwl3945_priv *priv, u32 flags, u8 meta_flag)
1277 {
1278 struct iwl3945_host_cmd cmd = {
1279 .id = REPLY_CARD_STATE_CMD,
1280 .len = sizeof(u32),
1281 .data = &flags,
1282 .meta.flags = meta_flag,
1283 };
1284
1285 if (meta_flag & CMD_ASYNC)
1286 cmd.meta.u.callback = iwl3945_card_state_sync_callback;
1287
1288 return iwl3945_send_cmd(priv, &cmd);
1289 }
1290
1291 static int iwl3945_add_sta_sync_callback(struct iwl3945_priv *priv,
1292 struct iwl3945_cmd *cmd, struct sk_buff *skb)
1293 {
1294 struct iwl3945_rx_packet *res = NULL;
1295
1296 if (!skb) {
1297 IWL_ERROR("Error: Response NULL in REPLY_ADD_STA.\n");
1298 return 1;
1299 }
1300
1301 res = (struct iwl3945_rx_packet *)skb->data;
1302 if (res->hdr.flags & IWL_CMD_FAILED_MSK) {
1303 IWL_ERROR("Bad return from REPLY_ADD_STA (0x%08X)\n",
1304 res->hdr.flags);
1305 return 1;
1306 }
1307
1308 switch (res->u.add_sta.status) {
1309 case ADD_STA_SUCCESS_MSK:
1310 break;
1311 default:
1312 break;
1313 }
1314
1315 /* We didn't cache the SKB; let the caller free it */
1316 return 1;
1317 }
1318
1319 int iwl3945_send_add_station(struct iwl3945_priv *priv,
1320 struct iwl3945_addsta_cmd *sta, u8 flags)
1321 {
1322 struct iwl3945_rx_packet *res = NULL;
1323 int rc = 0;
1324 struct iwl3945_host_cmd cmd = {
1325 .id = REPLY_ADD_STA,
1326 .len = sizeof(struct iwl3945_addsta_cmd),
1327 .meta.flags = flags,
1328 .data = sta,
1329 };
1330
1331 if (flags & CMD_ASYNC)
1332 cmd.meta.u.callback = iwl3945_add_sta_sync_callback;
1333 else
1334 cmd.meta.flags |= CMD_WANT_SKB;
1335
1336 rc = iwl3945_send_cmd(priv, &cmd);
1337
1338 if (rc || (flags & CMD_ASYNC))
1339 return rc;
1340
1341 res = (struct iwl3945_rx_packet *)cmd.meta.u.skb->data;
1342 if (res->hdr.flags & IWL_CMD_FAILED_MSK) {
1343 IWL_ERROR("Bad return from REPLY_ADD_STA (0x%08X)\n",
1344 res->hdr.flags);
1345 rc = -EIO;
1346 }
1347
1348 if (rc == 0) {
1349 switch (res->u.add_sta.status) {
1350 case ADD_STA_SUCCESS_MSK:
1351 IWL_DEBUG_INFO("REPLY_ADD_STA PASSED\n");
1352 break;
1353 default:
1354 rc = -EIO;
1355 IWL_WARNING("REPLY_ADD_STA failed\n");
1356 break;
1357 }
1358 }
1359
1360 priv->alloc_rxb_skb--;
1361 dev_kfree_skb_any(cmd.meta.u.skb);
1362
1363 return rc;
1364 }
1365
1366 static int iwl3945_update_sta_key_info(struct iwl3945_priv *priv,
1367 struct ieee80211_key_conf *keyconf,
1368 u8 sta_id)
1369 {
1370 unsigned long flags;
1371 __le16 key_flags = 0;
1372
1373 switch (keyconf->alg) {
1374 case ALG_CCMP:
1375 key_flags |= STA_KEY_FLG_CCMP;
1376 key_flags |= cpu_to_le16(
1377 keyconf->keyidx << STA_KEY_FLG_KEYID_POS);
1378 key_flags &= ~STA_KEY_FLG_INVALID;
1379 break;
1380 case ALG_TKIP:
1381 case ALG_WEP:
1382 default:
1383 return -EINVAL;
1384 }
1385 spin_lock_irqsave(&priv->sta_lock, flags);
1386 priv->stations[sta_id].keyinfo.alg = keyconf->alg;
1387 priv->stations[sta_id].keyinfo.keylen = keyconf->keylen;
1388 memcpy(priv->stations[sta_id].keyinfo.key, keyconf->key,
1389 keyconf->keylen);
1390
1391 memcpy(priv->stations[sta_id].sta.key.key, keyconf->key,
1392 keyconf->keylen);
1393 priv->stations[sta_id].sta.key.key_flags = key_flags;
1394 priv->stations[sta_id].sta.sta.modify_mask = STA_MODIFY_KEY_MASK;
1395 priv->stations[sta_id].sta.mode = STA_CONTROL_MODIFY_MSK;
1396
1397 spin_unlock_irqrestore(&priv->sta_lock, flags);
1398
1399 IWL_DEBUG_INFO("hwcrypto: modify ucode station key info\n");
1400 iwl3945_send_add_station(priv, &priv->stations[sta_id].sta, 0);
1401 return 0;
1402 }
1403
1404 static int iwl3945_clear_sta_key_info(struct iwl3945_priv *priv, u8 sta_id)
1405 {
1406 unsigned long flags;
1407
1408 spin_lock_irqsave(&priv->sta_lock, flags);
1409 memset(&priv->stations[sta_id].keyinfo, 0, sizeof(struct iwl3945_hw_key));
1410 memset(&priv->stations[sta_id].sta.key, 0, sizeof(struct iwl3945_keyinfo));
1411 priv->stations[sta_id].sta.key.key_flags = STA_KEY_FLG_NO_ENC;
1412 priv->stations[sta_id].sta.sta.modify_mask = STA_MODIFY_KEY_MASK;
1413 priv->stations[sta_id].sta.mode = STA_CONTROL_MODIFY_MSK;
1414 spin_unlock_irqrestore(&priv->sta_lock, flags);
1415
1416 IWL_DEBUG_INFO("hwcrypto: clear ucode station key info\n");
1417 iwl3945_send_add_station(priv, &priv->stations[sta_id].sta, 0);
1418 return 0;
1419 }
1420
1421 static void iwl3945_clear_free_frames(struct iwl3945_priv *priv)
1422 {
1423 struct list_head *element;
1424
1425 IWL_DEBUG_INFO("%d frames on pre-allocated heap on clear.\n",
1426 priv->frames_count);
1427
1428 while (!list_empty(&priv->free_frames)) {
1429 element = priv->free_frames.next;
1430 list_del(element);
1431 kfree(list_entry(element, struct iwl3945_frame, list));
1432 priv->frames_count--;
1433 }
1434
1435 if (priv->frames_count) {
1436 IWL_WARNING("%d frames still in use. Did we lose one?\n",
1437 priv->frames_count);
1438 priv->frames_count = 0;
1439 }
1440 }
1441
1442 static struct iwl3945_frame *iwl3945_get_free_frame(struct iwl3945_priv *priv)
1443 {
1444 struct iwl3945_frame *frame;
1445 struct list_head *element;
1446 if (list_empty(&priv->free_frames)) {
1447 frame = kzalloc(sizeof(*frame), GFP_KERNEL);
1448 if (!frame) {
1449 IWL_ERROR("Could not allocate frame!\n");
1450 return NULL;
1451 }
1452
1453 priv->frames_count++;
1454 return frame;
1455 }
1456
1457 element = priv->free_frames.next;
1458 list_del(element);
1459 return list_entry(element, struct iwl3945_frame, list);
1460 }
1461
1462 static void iwl3945_free_frame(struct iwl3945_priv *priv, struct iwl3945_frame *frame)
1463 {
1464 memset(frame, 0, sizeof(*frame));
1465 list_add(&frame->list, &priv->free_frames);
1466 }
1467
1468 unsigned int iwl3945_fill_beacon_frame(struct iwl3945_priv *priv,
1469 struct ieee80211_hdr *hdr,
1470 const u8 *dest, int left)
1471 {
1472
1473 if (!iwl3945_is_associated(priv) || !priv->ibss_beacon ||
1474 ((priv->iw_mode != IEEE80211_IF_TYPE_IBSS) &&
1475 (priv->iw_mode != IEEE80211_IF_TYPE_AP)))
1476 return 0;
1477
1478 if (priv->ibss_beacon->len > left)
1479 return 0;
1480
1481 memcpy(hdr, priv->ibss_beacon->data, priv->ibss_beacon->len);
1482
1483 return priv->ibss_beacon->len;
1484 }
1485
1486 static u8 iwl3945_rate_get_lowest_plcp(int rate_mask)
1487 {
1488 u8 i;
1489
1490 for (i = IWL_RATE_1M_INDEX; i != IWL_RATE_INVALID;
1491 i = iwl3945_rates[i].next_ieee) {
1492 if (rate_mask & (1 << i))
1493 return iwl3945_rates[i].plcp;
1494 }
1495
1496 return IWL_RATE_INVALID;
1497 }
1498
1499 static int iwl3945_send_beacon_cmd(struct iwl3945_priv *priv)
1500 {
1501 struct iwl3945_frame *frame;
1502 unsigned int frame_size;
1503 int rc;
1504 u8 rate;
1505
1506 frame = iwl3945_get_free_frame(priv);
1507
1508 if (!frame) {
1509 IWL_ERROR("Could not obtain free frame buffer for beacon "
1510 "command.\n");
1511 return -ENOMEM;
1512 }
1513
1514 if (!(priv->staging_rxon.flags & RXON_FLG_BAND_24G_MSK)) {
1515 rate = iwl3945_rate_get_lowest_plcp(priv->active_rate_basic &
1516 0xFF0);
1517 if (rate == IWL_INVALID_RATE)
1518 rate = IWL_RATE_6M_PLCP;
1519 } else {
1520 rate = iwl3945_rate_get_lowest_plcp(priv->active_rate_basic & 0xF);
1521 if (rate == IWL_INVALID_RATE)
1522 rate = IWL_RATE_1M_PLCP;
1523 }
1524
1525 frame_size = iwl3945_hw_get_beacon_cmd(priv, frame, rate);
1526
1527 rc = iwl3945_send_cmd_pdu(priv, REPLY_TX_BEACON, frame_size,
1528 &frame->u.cmd[0]);
1529
1530 iwl3945_free_frame(priv, frame);
1531
1532 return rc;
1533 }
1534
1535 /******************************************************************************
1536 *
1537 * EEPROM related functions
1538 *
1539 ******************************************************************************/
1540
1541 static void get_eeprom_mac(struct iwl3945_priv *priv, u8 *mac)
1542 {
1543 memcpy(mac, priv->eeprom.mac_address, 6);
1544 }
1545
1546 /*
1547 * Clear the OWNER_MSK, to establish driver (instead of uCode running on
1548 * embedded controller) as EEPROM reader; each read is a series of pulses
1549 * to/from the EEPROM chip, not a single event, so even reads could conflict
1550 * if they weren't arbitrated by some ownership mechanism. Here, the driver
1551 * simply claims ownership, which should be safe when this function is called
1552 * (i.e. before loading uCode!).
1553 */
1554 static inline int iwl3945_eeprom_acquire_semaphore(struct iwl3945_priv *priv)
1555 {
1556 _iwl3945_clear_bit(priv, CSR_EEPROM_GP, CSR_EEPROM_GP_IF_OWNER_MSK);
1557 return 0;
1558 }
1559
1560 /**
1561 * iwl3945_eeprom_init - read EEPROM contents
1562 *
1563 * Load the EEPROM contents from adapter into priv->eeprom
1564 *
1565 * NOTE: This routine uses the non-debug IO access functions.
1566 */
1567 int iwl3945_eeprom_init(struct iwl3945_priv *priv)
1568 {
1569 u16 *e = (u16 *)&priv->eeprom;
1570 u32 gp = iwl3945_read32(priv, CSR_EEPROM_GP);
1571 u32 r;
1572 int sz = sizeof(priv->eeprom);
1573 int rc;
1574 int i;
1575 u16 addr;
1576
1577 /* The EEPROM structure has several padding buffers within it
1578 * and when adding new EEPROM maps is subject to programmer errors
1579 * which may be very difficult to identify without explicitly
1580 * checking the resulting size of the eeprom map. */
1581 BUILD_BUG_ON(sizeof(priv->eeprom) != IWL_EEPROM_IMAGE_SIZE);
1582
1583 if ((gp & CSR_EEPROM_GP_VALID_MSK) == CSR_EEPROM_GP_BAD_SIGNATURE) {
1584 IWL_ERROR("EEPROM not found, EEPROM_GP=0x%08x", gp);
1585 return -ENOENT;
1586 }
1587
1588 /* Make sure driver (instead of uCode) is allowed to read EEPROM */
1589 rc = iwl3945_eeprom_acquire_semaphore(priv);
1590 if (rc < 0) {
1591 IWL_ERROR("Failed to acquire EEPROM semaphore.\n");
1592 return -ENOENT;
1593 }
1594
1595 /* eeprom is an array of 16bit values */
1596 for (addr = 0; addr < sz; addr += sizeof(u16)) {
1597 _iwl3945_write32(priv, CSR_EEPROM_REG, addr << 1);
1598 _iwl3945_clear_bit(priv, CSR_EEPROM_REG, CSR_EEPROM_REG_BIT_CMD);
1599
1600 for (i = 0; i < IWL_EEPROM_ACCESS_TIMEOUT;
1601 i += IWL_EEPROM_ACCESS_DELAY) {
1602 r = _iwl3945_read_direct32(priv, CSR_EEPROM_REG);
1603 if (r & CSR_EEPROM_REG_READ_VALID_MSK)
1604 break;
1605 udelay(IWL_EEPROM_ACCESS_DELAY);
1606 }
1607
1608 if (!(r & CSR_EEPROM_REG_READ_VALID_MSK)) {
1609 IWL_ERROR("Time out reading EEPROM[%d]", addr);
1610 return -ETIMEDOUT;
1611 }
1612 e[addr / 2] = le16_to_cpu((__force __le16)(r >> 16));
1613 }
1614
1615 return 0;
1616 }
1617
1618 static void iwl3945_unset_hw_setting(struct iwl3945_priv *priv)
1619 {
1620 if (priv->hw_setting.shared_virt)
1621 pci_free_consistent(priv->pci_dev,
1622 sizeof(struct iwl3945_shared),
1623 priv->hw_setting.shared_virt,
1624 priv->hw_setting.shared_phys);
1625 }
1626
1627 /**
1628 * iwl3945_supported_rate_to_ie - fill in the supported rate in IE field
1629 *
1630 * return : set the bit for each supported rate insert in ie
1631 */
1632 static u16 iwl3945_supported_rate_to_ie(u8 *ie, u16 supported_rate,
1633 u16 basic_rate, int *left)
1634 {
1635 u16 ret_rates = 0, bit;
1636 int i;
1637 u8 *cnt = ie;
1638 u8 *rates = ie + 1;
1639
1640 for (bit = 1, i = 0; i < IWL_RATE_COUNT; i++, bit <<= 1) {
1641 if (bit & supported_rate) {
1642 ret_rates |= bit;
1643 rates[*cnt] = iwl3945_rates[i].ieee |
1644 ((bit & basic_rate) ? 0x80 : 0x00);
1645 (*cnt)++;
1646 (*left)--;
1647 if ((*left <= 0) ||
1648 (*cnt >= IWL_SUPPORTED_RATES_IE_LEN))
1649 break;
1650 }
1651 }
1652
1653 return ret_rates;
1654 }
1655
1656 /**
1657 * iwl3945_fill_probe_req - fill in all required fields and IE for probe request
1658 */
1659 static u16 iwl3945_fill_probe_req(struct iwl3945_priv *priv,
1660 struct ieee80211_mgmt *frame,
1661 int left, int is_direct)
1662 {
1663 int len = 0;
1664 u8 *pos = NULL;
1665 u16 active_rates, ret_rates, cck_rates;
1666
1667 /* Make sure there is enough space for the probe request,
1668 * two mandatory IEs and the data */
1669 left -= 24;
1670 if (left < 0)
1671 return 0;
1672 len += 24;
1673
1674 frame->frame_control = cpu_to_le16(IEEE80211_STYPE_PROBE_REQ);
1675 memcpy(frame->da, iwl3945_broadcast_addr, ETH_ALEN);
1676 memcpy(frame->sa, priv->mac_addr, ETH_ALEN);
1677 memcpy(frame->bssid, iwl3945_broadcast_addr, ETH_ALEN);
1678 frame->seq_ctrl = 0;
1679
1680 /* fill in our indirect SSID IE */
1681 /* ...next IE... */
1682
1683 left -= 2;
1684 if (left < 0)
1685 return 0;
1686 len += 2;
1687 pos = &(frame->u.probe_req.variable[0]);
1688 *pos++ = WLAN_EID_SSID;
1689 *pos++ = 0;
1690
1691 /* fill in our direct SSID IE... */
1692 if (is_direct) {
1693 /* ...next IE... */
1694 left -= 2 + priv->essid_len;
1695 if (left < 0)
1696 return 0;
1697 /* ... fill it in... */
1698 *pos++ = WLAN_EID_SSID;
1699 *pos++ = priv->essid_len;
1700 memcpy(pos, priv->essid, priv->essid_len);
1701 pos += priv->essid_len;
1702 len += 2 + priv->essid_len;
1703 }
1704
1705 /* fill in supported rate */
1706 /* ...next IE... */
1707 left -= 2;
1708 if (left < 0)
1709 return 0;
1710
1711 /* ... fill it in... */
1712 *pos++ = WLAN_EID_SUPP_RATES;
1713 *pos = 0;
1714
1715 priv->active_rate = priv->rates_mask;
1716 active_rates = priv->active_rate;
1717 priv->active_rate_basic = priv->rates_mask & IWL_BASIC_RATES_MASK;
1718
1719 cck_rates = IWL_CCK_RATES_MASK & active_rates;
1720 ret_rates = iwl3945_supported_rate_to_ie(pos, cck_rates,
1721 priv->active_rate_basic, &left);
1722 active_rates &= ~ret_rates;
1723
1724 ret_rates = iwl3945_supported_rate_to_ie(pos, active_rates,
1725 priv->active_rate_basic, &left);
1726 active_rates &= ~ret_rates;
1727
1728 len += 2 + *pos;
1729 pos += (*pos) + 1;
1730 if (active_rates == 0)
1731 goto fill_end;
1732
1733 /* fill in supported extended rate */
1734 /* ...next IE... */
1735 left -= 2;
1736 if (left < 0)
1737 return 0;
1738 /* ... fill it in... */
1739 *pos++ = WLAN_EID_EXT_SUPP_RATES;
1740 *pos = 0;
1741 iwl3945_supported_rate_to_ie(pos, active_rates,
1742 priv->active_rate_basic, &left);
1743 if (*pos > 0)
1744 len += 2 + *pos;
1745
1746 fill_end:
1747 return (u16)len;
1748 }
1749
1750 /*
1751 * QoS support
1752 */
1753 static int iwl3945_send_qos_params_command(struct iwl3945_priv *priv,
1754 struct iwl3945_qosparam_cmd *qos)
1755 {
1756
1757 return iwl3945_send_cmd_pdu(priv, REPLY_QOS_PARAM,
1758 sizeof(struct iwl3945_qosparam_cmd), qos);
1759 }
1760
1761 static void iwl3945_reset_qos(struct iwl3945_priv *priv)
1762 {
1763 u16 cw_min = 15;
1764 u16 cw_max = 1023;
1765 u8 aifs = 2;
1766 u8 is_legacy = 0;
1767 unsigned long flags;
1768 int i;
1769
1770 spin_lock_irqsave(&priv->lock, flags);
1771 priv->qos_data.qos_active = 0;
1772
1773 if (priv->iw_mode == IEEE80211_IF_TYPE_IBSS) {
1774 if (priv->qos_data.qos_enable)
1775 priv->qos_data.qos_active = 1;
1776 if (!(priv->active_rate & 0xfff0)) {
1777 cw_min = 31;
1778 is_legacy = 1;
1779 }
1780 } else if (priv->iw_mode == IEEE80211_IF_TYPE_AP) {
1781 if (priv->qos_data.qos_enable)
1782 priv->qos_data.qos_active = 1;
1783 } else if (!(priv->staging_rxon.flags & RXON_FLG_SHORT_SLOT_MSK)) {
1784 cw_min = 31;
1785 is_legacy = 1;
1786 }
1787
1788 if (priv->qos_data.qos_active)
1789 aifs = 3;
1790
1791 priv->qos_data.def_qos_parm.ac[0].cw_min = cpu_to_le16(cw_min);
1792 priv->qos_data.def_qos_parm.ac[0].cw_max = cpu_to_le16(cw_max);
1793 priv->qos_data.def_qos_parm.ac[0].aifsn = aifs;
1794 priv->qos_data.def_qos_parm.ac[0].edca_txop = 0;
1795 priv->qos_data.def_qos_parm.ac[0].reserved1 = 0;
1796
1797 if (priv->qos_data.qos_active) {
1798 i = 1;
1799 priv->qos_data.def_qos_parm.ac[i].cw_min = cpu_to_le16(cw_min);
1800 priv->qos_data.def_qos_parm.ac[i].cw_max = cpu_to_le16(cw_max);
1801 priv->qos_data.def_qos_parm.ac[i].aifsn = 7;
1802 priv->qos_data.def_qos_parm.ac[i].edca_txop = 0;
1803 priv->qos_data.def_qos_parm.ac[i].reserved1 = 0;
1804
1805 i = 2;
1806 priv->qos_data.def_qos_parm.ac[i].cw_min =
1807 cpu_to_le16((cw_min + 1) / 2 - 1);
1808 priv->qos_data.def_qos_parm.ac[i].cw_max =
1809 cpu_to_le16(cw_max);
1810 priv->qos_data.def_qos_parm.ac[i].aifsn = 2;
1811 if (is_legacy)
1812 priv->qos_data.def_qos_parm.ac[i].edca_txop =
1813 cpu_to_le16(6016);
1814 else
1815 priv->qos_data.def_qos_parm.ac[i].edca_txop =
1816 cpu_to_le16(3008);
1817 priv->qos_data.def_qos_parm.ac[i].reserved1 = 0;
1818
1819 i = 3;
1820 priv->qos_data.def_qos_parm.ac[i].cw_min =
1821 cpu_to_le16((cw_min + 1) / 4 - 1);
1822 priv->qos_data.def_qos_parm.ac[i].cw_max =
1823 cpu_to_le16((cw_max + 1) / 2 - 1);
1824 priv->qos_data.def_qos_parm.ac[i].aifsn = 2;
1825 priv->qos_data.def_qos_parm.ac[i].reserved1 = 0;
1826 if (is_legacy)
1827 priv->qos_data.def_qos_parm.ac[i].edca_txop =
1828 cpu_to_le16(3264);
1829 else
1830 priv->qos_data.def_qos_parm.ac[i].edca_txop =
1831 cpu_to_le16(1504);
1832 } else {
1833 for (i = 1; i < 4; i++) {
1834 priv->qos_data.def_qos_parm.ac[i].cw_min =
1835 cpu_to_le16(cw_min);
1836 priv->qos_data.def_qos_parm.ac[i].cw_max =
1837 cpu_to_le16(cw_max);
1838 priv->qos_data.def_qos_parm.ac[i].aifsn = aifs;
1839 priv->qos_data.def_qos_parm.ac[i].edca_txop = 0;
1840 priv->qos_data.def_qos_parm.ac[i].reserved1 = 0;
1841 }
1842 }
1843 IWL_DEBUG_QOS("set QoS to default \n");
1844
1845 spin_unlock_irqrestore(&priv->lock, flags);
1846 }
1847
1848 static void iwl3945_activate_qos(struct iwl3945_priv *priv, u8 force)
1849 {
1850 unsigned long flags;
1851
1852 if (test_bit(STATUS_EXIT_PENDING, &priv->status))
1853 return;
1854
1855 if (!priv->qos_data.qos_enable)
1856 return;
1857
1858 spin_lock_irqsave(&priv->lock, flags);
1859 priv->qos_data.def_qos_parm.qos_flags = 0;
1860
1861 if (priv->qos_data.qos_cap.q_AP.queue_request &&
1862 !priv->qos_data.qos_cap.q_AP.txop_request)
1863 priv->qos_data.def_qos_parm.qos_flags |=
1864 QOS_PARAM_FLG_TXOP_TYPE_MSK;
1865
1866 if (priv->qos_data.qos_active)
1867 priv->qos_data.def_qos_parm.qos_flags |=
1868 QOS_PARAM_FLG_UPDATE_EDCA_MSK;
1869
1870 spin_unlock_irqrestore(&priv->lock, flags);
1871
1872 if (force || iwl3945_is_associated(priv)) {
1873 IWL_DEBUG_QOS("send QoS cmd with Qos active %d \n",
1874 priv->qos_data.qos_active);
1875
1876 iwl3945_send_qos_params_command(priv,
1877 &(priv->qos_data.def_qos_parm));
1878 }
1879 }
1880
1881 /*
1882 * Power management (not Tx power!) functions
1883 */
1884 #define MSEC_TO_USEC 1024
1885
1886 #define NOSLP __constant_cpu_to_le32(0)
1887 #define SLP IWL_POWER_DRIVER_ALLOW_SLEEP_MSK
1888 #define SLP_TIMEOUT(T) __constant_cpu_to_le32((T) * MSEC_TO_USEC)
1889 #define SLP_VEC(X0, X1, X2, X3, X4) {__constant_cpu_to_le32(X0), \
1890 __constant_cpu_to_le32(X1), \
1891 __constant_cpu_to_le32(X2), \
1892 __constant_cpu_to_le32(X3), \
1893 __constant_cpu_to_le32(X4)}
1894
1895
1896 /* default power management (not Tx power) table values */
1897 /* for tim 0-10 */
1898 static struct iwl3945_power_vec_entry range_0[IWL_POWER_AC] = {
1899 {{NOSLP, SLP_TIMEOUT(0), SLP_TIMEOUT(0), SLP_VEC(0, 0, 0, 0, 0)}, 0},
1900 {{SLP, SLP_TIMEOUT(200), SLP_TIMEOUT(500), SLP_VEC(1, 2, 3, 4, 4)}, 0},
1901 {{SLP, SLP_TIMEOUT(200), SLP_TIMEOUT(300), SLP_VEC(2, 4, 6, 7, 7)}, 0},
1902 {{SLP, SLP_TIMEOUT(50), SLP_TIMEOUT(100), SLP_VEC(2, 6, 9, 9, 10)}, 0},
1903 {{SLP, SLP_TIMEOUT(50), SLP_TIMEOUT(25), SLP_VEC(2, 7, 9, 9, 10)}, 1},
1904 {{SLP, SLP_TIMEOUT(25), SLP_TIMEOUT(25), SLP_VEC(4, 7, 10, 10, 10)}, 1}
1905 };
1906
1907 /* for tim > 10 */
1908 static struct iwl3945_power_vec_entry range_1[IWL_POWER_AC] = {
1909 {{NOSLP, SLP_TIMEOUT(0), SLP_TIMEOUT(0), SLP_VEC(0, 0, 0, 0, 0)}, 0},
1910 {{SLP, SLP_TIMEOUT(200), SLP_TIMEOUT(500),
1911 SLP_VEC(1, 2, 3, 4, 0xFF)}, 0},
1912 {{SLP, SLP_TIMEOUT(200), SLP_TIMEOUT(300),
1913 SLP_VEC(2, 4, 6, 7, 0xFF)}, 0},
1914 {{SLP, SLP_TIMEOUT(50), SLP_TIMEOUT(100),
1915 SLP_VEC(2, 6, 9, 9, 0xFF)}, 0},
1916 {{SLP, SLP_TIMEOUT(50), SLP_TIMEOUT(25), SLP_VEC(2, 7, 9, 9, 0xFF)}, 0},
1917 {{SLP, SLP_TIMEOUT(25), SLP_TIMEOUT(25),
1918 SLP_VEC(4, 7, 10, 10, 0xFF)}, 0}
1919 };
1920
1921 int iwl3945_power_init_handle(struct iwl3945_priv *priv)
1922 {
1923 int rc = 0, i;
1924 struct iwl3945_power_mgr *pow_data;
1925 int size = sizeof(struct iwl3945_power_vec_entry) * IWL_POWER_AC;
1926 u16 pci_pm;
1927
1928 IWL_DEBUG_POWER("Initialize power \n");
1929
1930 pow_data = &(priv->power_data);
1931
1932 memset(pow_data, 0, sizeof(*pow_data));
1933
1934 pow_data->active_index = IWL_POWER_RANGE_0;
1935 pow_data->dtim_val = 0xffff;
1936
1937 memcpy(&pow_data->pwr_range_0[0], &range_0[0], size);
1938 memcpy(&pow_data->pwr_range_1[0], &range_1[0], size);
1939
1940 rc = pci_read_config_word(priv->pci_dev, PCI_LINK_CTRL, &pci_pm);
1941 if (rc != 0)
1942 return 0;
1943 else {
1944 struct iwl3945_powertable_cmd *cmd;
1945
1946 IWL_DEBUG_POWER("adjust power command flags\n");
1947
1948 for (i = 0; i < IWL_POWER_AC; i++) {
1949 cmd = &pow_data->pwr_range_0[i].cmd;
1950
1951 if (pci_pm & 0x1)
1952 cmd->flags &= ~IWL_POWER_PCI_PM_MSK;
1953 else
1954 cmd->flags |= IWL_POWER_PCI_PM_MSK;
1955 }
1956 }
1957 return rc;
1958 }
1959
1960 static int iwl3945_update_power_cmd(struct iwl3945_priv *priv,
1961 struct iwl3945_powertable_cmd *cmd, u32 mode)
1962 {
1963 int rc = 0, i;
1964 u8 skip;
1965 u32 max_sleep = 0;
1966 struct iwl3945_power_vec_entry *range;
1967 u8 period = 0;
1968 struct iwl3945_power_mgr *pow_data;
1969
1970 if (mode > IWL_POWER_INDEX_5) {
1971 IWL_DEBUG_POWER("Error invalid power mode \n");
1972 return -1;
1973 }
1974 pow_data = &(priv->power_data);
1975
1976 if (pow_data->active_index == IWL_POWER_RANGE_0)
1977 range = &pow_data->pwr_range_0[0];
1978 else
1979 range = &pow_data->pwr_range_1[1];
1980
1981 memcpy(cmd, &range[mode].cmd, sizeof(struct iwl3945_powertable_cmd));
1982
1983 #ifdef IWL_MAC80211_DISABLE
1984 if (priv->assoc_network != NULL) {
1985 unsigned long flags;
1986
1987 period = priv->assoc_network->tim.tim_period;
1988 }
1989 #endif /*IWL_MAC80211_DISABLE */
1990 skip = range[mode].no_dtim;
1991
1992 if (period == 0) {
1993 period = 1;
1994 skip = 0;
1995 }
1996
1997 if (skip == 0) {
1998 max_sleep = period;
1999 cmd->flags &= ~IWL_POWER_SLEEP_OVER_DTIM_MSK;
2000 } else {
2001 __le32 slp_itrvl = cmd->sleep_interval[IWL_POWER_VEC_SIZE - 1];
2002 max_sleep = (le32_to_cpu(slp_itrvl) / period) * period;
2003 cmd->flags |= IWL_POWER_SLEEP_OVER_DTIM_MSK;
2004 }
2005
2006 for (i = 0; i < IWL_POWER_VEC_SIZE; i++) {
2007 if (le32_to_cpu(cmd->sleep_interval[i]) > max_sleep)
2008 cmd->sleep_interval[i] = cpu_to_le32(max_sleep);
2009 }
2010
2011 IWL_DEBUG_POWER("Flags value = 0x%08X\n", cmd->flags);
2012 IWL_DEBUG_POWER("Tx timeout = %u\n", le32_to_cpu(cmd->tx_data_timeout));
2013 IWL_DEBUG_POWER("Rx timeout = %u\n", le32_to_cpu(cmd->rx_data_timeout));
2014 IWL_DEBUG_POWER("Sleep interval vector = { %d , %d , %d , %d , %d }\n",
2015 le32_to_cpu(cmd->sleep_interval[0]),
2016 le32_to_cpu(cmd->sleep_interval[1]),
2017 le32_to_cpu(cmd->sleep_interval[2]),
2018 le32_to_cpu(cmd->sleep_interval[3]),
2019 le32_to_cpu(cmd->sleep_interval[4]));
2020
2021 return rc;
2022 }
2023
2024 static int iwl3945_send_power_mode(struct iwl3945_priv *priv, u32 mode)
2025 {
2026 u32 uninitialized_var(final_mode);
2027 int rc;
2028 struct iwl3945_powertable_cmd cmd;
2029
2030 /* If on battery, set to 3,
2031 * if plugged into AC power, set to CAM ("continuously aware mode"),
2032 * else user level */
2033 switch (mode) {
2034 case IWL_POWER_BATTERY:
2035 final_mode = IWL_POWER_INDEX_3;
2036 break;
2037 case IWL_POWER_AC:
2038 final_mode = IWL_POWER_MODE_CAM;
2039 break;
2040 default:
2041 final_mode = mode;
2042 break;
2043 }
2044
2045 iwl3945_update_power_cmd(priv, &cmd, final_mode);
2046
2047 rc = iwl3945_send_cmd_pdu(priv, POWER_TABLE_CMD, sizeof(cmd), &cmd);
2048
2049 if (final_mode == IWL_POWER_MODE_CAM)
2050 clear_bit(STATUS_POWER_PMI, &priv->status);
2051 else
2052 set_bit(STATUS_POWER_PMI, &priv->status);
2053
2054 return rc;
2055 }
2056
2057 int iwl3945_is_network_packet(struct iwl3945_priv *priv, struct ieee80211_hdr *header)
2058 {
2059 /* Filter incoming packets to determine if they are targeted toward
2060 * this network, discarding packets coming from ourselves */
2061 switch (priv->iw_mode) {
2062 case IEEE80211_IF_TYPE_IBSS: /* Header: Dest. | Source | BSSID */
2063 /* packets from our adapter are dropped (echo) */
2064 if (!compare_ether_addr(header->addr2, priv->mac_addr))
2065 return 0;
2066 /* {broad,multi}cast packets to our IBSS go through */
2067 if (is_multicast_ether_addr(header->addr1))
2068 return !compare_ether_addr(header->addr3, priv->bssid);
2069 /* packets to our adapter go through */
2070 return !compare_ether_addr(header->addr1, priv->mac_addr);
2071 case IEEE80211_IF_TYPE_STA: /* Header: Dest. | AP{BSSID} | Source */
2072 /* packets from our adapter are dropped (echo) */
2073 if (!compare_ether_addr(header->addr3, priv->mac_addr))
2074 return 0;
2075 /* {broad,multi}cast packets to our BSS go through */
2076 if (is_multicast_ether_addr(header->addr1))
2077 return !compare_ether_addr(header->addr2, priv->bssid);
2078 /* packets to our adapter go through */
2079 return !compare_ether_addr(header->addr1, priv->mac_addr);
2080 }
2081
2082 return 1;
2083 }
2084
2085 #define TX_STATUS_ENTRY(x) case TX_STATUS_FAIL_ ## x: return #x
2086
2087 static const char *iwl3945_get_tx_fail_reason(u32 status)
2088 {
2089 switch (status & TX_STATUS_MSK) {
2090 case TX_STATUS_SUCCESS:
2091 return "SUCCESS";
2092 TX_STATUS_ENTRY(SHORT_LIMIT);
2093 TX_STATUS_ENTRY(LONG_LIMIT);
2094 TX_STATUS_ENTRY(FIFO_UNDERRUN);
2095 TX_STATUS_ENTRY(MGMNT_ABORT);
2096 TX_STATUS_ENTRY(NEXT_FRAG);
2097 TX_STATUS_ENTRY(LIFE_EXPIRE);
2098 TX_STATUS_ENTRY(DEST_PS);
2099 TX_STATUS_ENTRY(ABORTED);
2100 TX_STATUS_ENTRY(BT_RETRY);
2101 TX_STATUS_ENTRY(STA_INVALID);
2102 TX_STATUS_ENTRY(FRAG_DROPPED);
2103 TX_STATUS_ENTRY(TID_DISABLE);
2104 TX_STATUS_ENTRY(FRAME_FLUSHED);
2105 TX_STATUS_ENTRY(INSUFFICIENT_CF_POLL);
2106 TX_STATUS_ENTRY(TX_LOCKED);
2107 TX_STATUS_ENTRY(NO_BEACON_ON_RADAR);
2108 }
2109
2110 return "UNKNOWN";
2111 }
2112
2113 /**
2114 * iwl3945_scan_cancel - Cancel any currently executing HW scan
2115 *
2116 * NOTE: priv->mutex is not required before calling this function
2117 */
2118 static int iwl3945_scan_cancel(struct iwl3945_priv *priv)
2119 {
2120 if (!test_bit(STATUS_SCAN_HW, &priv->status)) {
2121 clear_bit(STATUS_SCANNING, &priv->status);
2122 return 0;
2123 }
2124
2125 if (test_bit(STATUS_SCANNING, &priv->status)) {
2126 if (!test_bit(STATUS_SCAN_ABORTING, &priv->status)) {
2127 IWL_DEBUG_SCAN("Queuing scan abort.\n");
2128 set_bit(STATUS_SCAN_ABORTING, &priv->status);
2129 queue_work(priv->workqueue, &priv->abort_scan);
2130
2131 } else
2132 IWL_DEBUG_SCAN("Scan abort already in progress.\n");
2133
2134 return test_bit(STATUS_SCANNING, &priv->status);
2135 }
2136
2137 return 0;
2138 }
2139
2140 /**
2141 * iwl3945_scan_cancel_timeout - Cancel any currently executing HW scan
2142 * @ms: amount of time to wait (in milliseconds) for scan to abort
2143 *
2144 * NOTE: priv->mutex must be held before calling this function
2145 */
2146 static int iwl3945_scan_cancel_timeout(struct iwl3945_priv *priv, unsigned long ms)
2147 {
2148 unsigned long now = jiffies;
2149 int ret;
2150
2151 ret = iwl3945_scan_cancel(priv);
2152 if (ret && ms) {
2153 mutex_unlock(&priv->mutex);
2154 while (!time_after(jiffies, now + msecs_to_jiffies(ms)) &&
2155 test_bit(STATUS_SCANNING, &priv->status))
2156 msleep(1);
2157 mutex_lock(&priv->mutex);
2158
2159 return test_bit(STATUS_SCANNING, &priv->status);
2160 }
2161
2162 return ret;
2163 }
2164
2165 static void iwl3945_sequence_reset(struct iwl3945_priv *priv)
2166 {
2167 /* Reset ieee stats */
2168
2169 /* We don't reset the net_device_stats (ieee->stats) on
2170 * re-association */
2171
2172 priv->last_seq_num = -1;
2173 priv->last_frag_num = -1;
2174 priv->last_packet_time = 0;
2175
2176 iwl3945_scan_cancel(priv);
2177 }
2178
2179 #define MAX_UCODE_BEACON_INTERVAL 1024
2180 #define INTEL_CONN_LISTEN_INTERVAL __constant_cpu_to_le16(0xA)
2181
2182 static __le16 iwl3945_adjust_beacon_interval(u16 beacon_val)
2183 {
2184 u16 new_val = 0;
2185 u16 beacon_factor = 0;
2186
2187 beacon_factor =
2188 (beacon_val + MAX_UCODE_BEACON_INTERVAL)
2189 / MAX_UCODE_BEACON_INTERVAL;
2190 new_val = beacon_val / beacon_factor;
2191
2192 return cpu_to_le16(new_val);
2193 }
2194
2195 static void iwl3945_setup_rxon_timing(struct iwl3945_priv *priv)
2196 {
2197 u64 interval_tm_unit;
2198 u64 tsf, result;
2199 unsigned long flags;
2200 struct ieee80211_conf *conf = NULL;
2201 u16 beacon_int = 0;
2202
2203 conf = ieee80211_get_hw_conf(priv->hw);
2204
2205 spin_lock_irqsave(&priv->lock, flags);
2206 priv->rxon_timing.timestamp.dw[1] = cpu_to_le32(priv->timestamp1);
2207 priv->rxon_timing.timestamp.dw[0] = cpu_to_le32(priv->timestamp0);
2208
2209 priv->rxon_timing.listen_interval = INTEL_CONN_LISTEN_INTERVAL;
2210
2211 tsf = priv->timestamp1;
2212 tsf = ((tsf << 32) | priv->timestamp0);
2213
2214 beacon_int = priv->beacon_int;
2215 spin_unlock_irqrestore(&priv->lock, flags);
2216
2217 if (priv->iw_mode == IEEE80211_IF_TYPE_STA) {
2218 if (beacon_int == 0) {
2219 priv->rxon_timing.beacon_interval = cpu_to_le16(100);
2220 priv->rxon_timing.beacon_init_val = cpu_to_le32(102400);
2221 } else {
2222 priv->rxon_timing.beacon_interval =
2223 cpu_to_le16(beacon_int);
2224 priv->rxon_timing.beacon_interval =
2225 iwl3945_adjust_beacon_interval(
2226 le16_to_cpu(priv->rxon_timing.beacon_interval));
2227 }
2228
2229 priv->rxon_timing.atim_window = 0;
2230 } else {
2231 priv->rxon_timing.beacon_interval =
2232 iwl3945_adjust_beacon_interval(conf->beacon_int);
2233 /* TODO: we need to get atim_window from upper stack
2234 * for now we set to 0 */
2235 priv->rxon_timing.atim_window = 0;
2236 }
2237
2238 interval_tm_unit =
2239 (le16_to_cpu(priv->rxon_timing.beacon_interval) * 1024);
2240 result = do_div(tsf, interval_tm_unit);
2241 priv->rxon_timing.beacon_init_val =
2242 cpu_to_le32((u32) ((u64) interval_tm_unit - result));
2243
2244 IWL_DEBUG_ASSOC
2245 ("beacon interval %d beacon timer %d beacon tim %d\n",
2246 le16_to_cpu(priv->rxon_timing.beacon_interval),
2247 le32_to_cpu(priv->rxon_timing.beacon_init_val),
2248 le16_to_cpu(priv->rxon_timing.atim_window));
2249 }
2250
2251 static int iwl3945_scan_initiate(struct iwl3945_priv *priv)
2252 {
2253 if (priv->iw_mode == IEEE80211_IF_TYPE_AP) {
2254 IWL_ERROR("APs don't scan.\n");
2255 return 0;
2256 }
2257
2258 if (!iwl3945_is_ready_rf(priv)) {
2259 IWL_DEBUG_SCAN("Aborting scan due to not ready.\n");
2260 return -EIO;
2261 }
2262
2263 if (test_bit(STATUS_SCANNING, &priv->status)) {
2264 IWL_DEBUG_SCAN("Scan already in progress.\n");
2265 return -EAGAIN;
2266 }
2267
2268 if (test_bit(STATUS_SCAN_ABORTING, &priv->status)) {
2269 IWL_DEBUG_SCAN("Scan request while abort pending. "
2270 "Queuing.\n");
2271 return -EAGAIN;
2272 }
2273
2274 IWL_DEBUG_INFO("Starting scan...\n");
2275 priv->scan_bands = 2;
2276 set_bit(STATUS_SCANNING, &priv->status);
2277 priv->scan_start = jiffies;
2278 priv->scan_pass_start = priv->scan_start;
2279
2280 queue_work(priv->workqueue, &priv->request_scan);
2281
2282 return 0;
2283 }
2284
2285 static int iwl3945_set_rxon_hwcrypto(struct iwl3945_priv *priv, int hw_decrypt)
2286 {
2287 struct iwl3945_rxon_cmd *rxon = &priv->staging_rxon;
2288
2289 if (hw_decrypt)
2290 rxon->filter_flags &= ~RXON_FILTER_DIS_DECRYPT_MSK;
2291 else
2292 rxon->filter_flags |= RXON_FILTER_DIS_DECRYPT_MSK;
2293
2294 return 0;
2295 }
2296
2297 static void iwl3945_set_flags_for_phymode(struct iwl3945_priv *priv,
2298 enum ieee80211_band band)
2299 {
2300 if (band == IEEE80211_BAND_5GHZ) {
2301 priv->staging_rxon.flags &=
2302 ~(RXON_FLG_BAND_24G_MSK | RXON_FLG_AUTO_DETECT_MSK
2303 | RXON_FLG_CCK_MSK);
2304 priv->staging_rxon.flags |= RXON_FLG_SHORT_SLOT_MSK;
2305 } else {
2306 /* Copied from iwl3945_bg_post_associate() */
2307 if (priv->assoc_capability & WLAN_CAPABILITY_SHORT_SLOT_TIME)
2308 priv->staging_rxon.flags |= RXON_FLG_SHORT_SLOT_MSK;
2309 else
2310 priv->staging_rxon.flags &= ~RXON_FLG_SHORT_SLOT_MSK;
2311
2312 if (priv->iw_mode == IEEE80211_IF_TYPE_IBSS)
2313 priv->staging_rxon.flags &= ~RXON_FLG_SHORT_SLOT_MSK;
2314
2315 priv->staging_rxon.flags |= RXON_FLG_BAND_24G_MSK;
2316 priv->staging_rxon.flags |= RXON_FLG_AUTO_DETECT_MSK;
2317 priv->staging_rxon.flags &= ~RXON_FLG_CCK_MSK;
2318 }
2319 }
2320
2321 /*
2322 * initialize rxon structure with default values from eeprom
2323 */
2324 static void iwl3945_connection_init_rx_config(struct iwl3945_priv *priv)
2325 {
2326 const struct iwl3945_channel_info *ch_info;
2327
2328 memset(&priv->staging_rxon, 0, sizeof(priv->staging_rxon));
2329
2330 switch (priv->iw_mode) {
2331 case IEEE80211_IF_TYPE_AP:
2332 priv->staging_rxon.dev_type = RXON_DEV_TYPE_AP;
2333 break;
2334
2335 case IEEE80211_IF_TYPE_STA:
2336 priv->staging_rxon.dev_type = RXON_DEV_TYPE_ESS;
2337 priv->staging_rxon.filter_flags = RXON_FILTER_ACCEPT_GRP_MSK;
2338 break;
2339
2340 case IEEE80211_IF_TYPE_IBSS:
2341 priv->staging_rxon.dev_type = RXON_DEV_TYPE_IBSS;
2342 priv->staging_rxon.flags = RXON_FLG_SHORT_PREAMBLE_MSK;
2343 priv->staging_rxon.filter_flags = RXON_FILTER_BCON_AWARE_MSK |
2344 RXON_FILTER_ACCEPT_GRP_MSK;
2345 break;
2346
2347 case IEEE80211_IF_TYPE_MNTR:
2348 priv->staging_rxon.dev_type = RXON_DEV_TYPE_SNIFFER;
2349 priv->staging_rxon.filter_flags = RXON_FILTER_PROMISC_MSK |
2350 RXON_FILTER_CTL2HOST_MSK | RXON_FILTER_ACCEPT_GRP_MSK;
2351 break;
2352 }
2353
2354 #if 0
2355 /* TODO: Figure out when short_preamble would be set and cache from
2356 * that */
2357 if (!hw_to_local(priv->hw)->short_preamble)
2358 priv->staging_rxon.flags &= ~RXON_FLG_SHORT_PREAMBLE_MSK;
2359 else
2360 priv->staging_rxon.flags |= RXON_FLG_SHORT_PREAMBLE_MSK;
2361 #endif
2362
2363 ch_info = iwl3945_get_channel_info(priv, priv->band,
2364 le16_to_cpu(priv->staging_rxon.channel));
2365
2366 if (!ch_info)
2367 ch_info = &priv->channel_info[0];
2368
2369 /*
2370 * in some case A channels are all non IBSS
2371 * in this case force B/G channel
2372 */
2373 if ((priv->iw_mode == IEEE80211_IF_TYPE_IBSS) &&
2374 !(is_channel_ibss(ch_info)))
2375 ch_info = &priv->channel_info[0];
2376
2377 priv->staging_rxon.channel = cpu_to_le16(ch_info->channel);
2378 if (is_channel_a_band(ch_info))
2379 priv->band = IEEE80211_BAND_5GHZ;
2380 else
2381 priv->band = IEEE80211_BAND_2GHZ;
2382
2383 iwl3945_set_flags_for_phymode(priv, priv->band);
2384
2385 priv->staging_rxon.ofdm_basic_rates =
2386 (IWL_OFDM_RATES_MASK >> IWL_FIRST_OFDM_RATE) & 0xFF;
2387 priv->staging_rxon.cck_basic_rates =
2388 (IWL_CCK_RATES_MASK >> IWL_FIRST_CCK_RATE) & 0xF;
2389 }
2390
2391 static int iwl3945_set_mode(struct iwl3945_priv *priv, int mode)
2392 {
2393 if (mode == IEEE80211_IF_TYPE_IBSS) {
2394 const struct iwl3945_channel_info *ch_info;
2395
2396 ch_info = iwl3945_get_channel_info(priv,
2397 priv->band,
2398 le16_to_cpu(priv->staging_rxon.channel));
2399
2400 if (!ch_info || !is_channel_ibss(ch_info)) {
2401 IWL_ERROR("channel %d not IBSS channel\n",
2402 le16_to_cpu(priv->staging_rxon.channel));
2403 return -EINVAL;
2404 }
2405 }
2406
2407 priv->iw_mode = mode;
2408
2409 iwl3945_connection_init_rx_config(priv);
2410 memcpy(priv->staging_rxon.node_addr, priv->mac_addr, ETH_ALEN);
2411
2412 iwl3945_clear_stations_table(priv);
2413
2414 /* dont commit rxon if rf-kill is on*/
2415 if (!iwl3945_is_ready_rf(priv))
2416 return -EAGAIN;
2417
2418 cancel_delayed_work(&priv->scan_check);
2419 if (iwl3945_scan_cancel_timeout(priv, 100)) {
2420 IWL_WARNING("Aborted scan still in progress after 100ms\n");
2421 IWL_DEBUG_MAC80211("leaving - scan abort failed.\n");
2422 return -EAGAIN;
2423 }
2424
2425 iwl3945_commit_rxon(priv);
2426
2427 return 0;
2428 }
2429
2430 static void iwl3945_build_tx_cmd_hwcrypto(struct iwl3945_priv *priv,
2431 struct ieee80211_tx_control *ctl,
2432 struct iwl3945_cmd *cmd,
2433 struct sk_buff *skb_frag,
2434 int last_frag)
2435 {
2436 struct iwl3945_hw_key *keyinfo = &priv->stations[ctl->key_idx].keyinfo;
2437
2438 switch (keyinfo->alg) {
2439 case ALG_CCMP:
2440 cmd->cmd.tx.sec_ctl = TX_CMD_SEC_CCM;
2441 memcpy(cmd->cmd.tx.key, keyinfo->key, keyinfo->keylen);
2442 IWL_DEBUG_TX("tx_cmd with aes hwcrypto\n");
2443 break;
2444
2445 case ALG_TKIP:
2446 #if 0
2447 cmd->cmd.tx.sec_ctl = TX_CMD_SEC_TKIP;
2448
2449 if (last_frag)
2450 memcpy(cmd->cmd.tx.tkip_mic.byte, skb_frag->tail - 8,
2451 8);
2452 else
2453 memset(cmd->cmd.tx.tkip_mic.byte, 0, 8);
2454 #endif
2455 break;
2456
2457 case ALG_WEP:
2458 cmd->cmd.tx.sec_ctl = TX_CMD_SEC_WEP |
2459 (ctl->key_idx & TX_CMD_SEC_MSK) << TX_CMD_SEC_SHIFT;
2460
2461 if (keyinfo->keylen == 13)
2462 cmd->cmd.tx.sec_ctl |= TX_CMD_SEC_KEY128;
2463
2464 memcpy(&cmd->cmd.tx.key[3], keyinfo->key, keyinfo->keylen);
2465
2466 IWL_DEBUG_TX("Configuring packet for WEP encryption "
2467 "with key %d\n", ctl->key_idx);
2468 break;
2469
2470 default:
2471 printk(KERN_ERR "Unknown encode alg %d\n", keyinfo->alg);
2472 break;
2473 }
2474 }
2475
2476 /*
2477 * handle build REPLY_TX command notification.
2478 */
2479 static void iwl3945_build_tx_cmd_basic(struct iwl3945_priv *priv,
2480 struct iwl3945_cmd *cmd,
2481 struct ieee80211_tx_control *ctrl,
2482 struct ieee80211_hdr *hdr,
2483 int is_unicast, u8 std_id)
2484 {
2485 __le16 *qc;
2486 u16 fc = le16_to_cpu(hdr->frame_control);
2487 __le32 tx_flags = cmd->cmd.tx.tx_flags;
2488
2489 cmd->cmd.tx.stop_time.life_time = TX_CMD_LIFE_TIME_INFINITE;
2490 if (!(ctrl->flags & IEEE80211_TXCTL_NO_ACK)) {
2491 tx_flags |= TX_CMD_FLG_ACK_MSK;
2492 if ((fc & IEEE80211_FCTL_FTYPE) == IEEE80211_FTYPE_MGMT)
2493 tx_flags |= TX_CMD_FLG_SEQ_CTL_MSK;
2494 if (ieee80211_is_probe_response(fc) &&
2495 !(le16_to_cpu(hdr->seq_ctrl) & 0xf))
2496 tx_flags |= TX_CMD_FLG_TSF_MSK;
2497 } else {
2498 tx_flags &= (~TX_CMD_FLG_ACK_MSK);
2499 tx_flags |= TX_CMD_FLG_SEQ_CTL_MSK;
2500 }
2501
2502 cmd->cmd.tx.sta_id = std_id;
2503 if (ieee80211_get_morefrag(hdr))
2504 tx_flags |= TX_CMD_FLG_MORE_FRAG_MSK;
2505
2506 qc = ieee80211_get_qos_ctrl(hdr);
2507 if (qc) {
2508 cmd->cmd.tx.tid_tspec = (u8) (le16_to_cpu(*qc) & 0xf);
2509 tx_flags &= ~TX_CMD_FLG_SEQ_CTL_MSK;
2510 } else
2511 tx_flags |= TX_CMD_FLG_SEQ_CTL_MSK;
2512
2513 if (ctrl->flags & IEEE80211_TXCTL_USE_RTS_CTS) {
2514 tx_flags |= TX_CMD_FLG_RTS_MSK;
2515 tx_flags &= ~TX_CMD_FLG_CTS_MSK;
2516 } else if (ctrl->flags & IEEE80211_TXCTL_USE_CTS_PROTECT) {
2517 tx_flags &= ~TX_CMD_FLG_RTS_MSK;
2518 tx_flags |= TX_CMD_FLG_CTS_MSK;
2519 }
2520
2521 if ((tx_flags & TX_CMD_FLG_RTS_MSK) || (tx_flags & TX_CMD_FLG_CTS_MSK))
2522 tx_flags |= TX_CMD_FLG_FULL_TXOP_PROT_MSK;
2523
2524 tx_flags &= ~(TX_CMD_FLG_ANT_SEL_MSK);
2525 if ((fc & IEEE80211_FCTL_FTYPE) == IEEE80211_FTYPE_MGMT) {
2526 if ((fc & IEEE80211_FCTL_STYPE) == IEEE80211_STYPE_ASSOC_REQ ||
2527 (fc & IEEE80211_FCTL_STYPE) == IEEE80211_STYPE_REASSOC_REQ)
2528 cmd->cmd.tx.timeout.pm_frame_timeout = cpu_to_le16(3);
2529 else
2530 cmd->cmd.tx.timeout.pm_frame_timeout = cpu_to_le16(2);
2531 } else
2532 cmd->cmd.tx.timeout.pm_frame_timeout = 0;
2533
2534 cmd->cmd.tx.driver_txop = 0;
2535 cmd->cmd.tx.tx_flags = tx_flags;
2536 cmd->cmd.tx.next_frame_len = 0;
2537 }
2538
2539 /**
2540 * iwl3945_get_sta_id - Find station's index within station table
2541 */
2542 static int iwl3945_get_sta_id(struct iwl3945_priv *priv, struct ieee80211_hdr *hdr)
2543 {
2544 int sta_id;
2545 u16 fc = le16_to_cpu(hdr->frame_control);
2546
2547 /* If this frame is broadcast or management, use broadcast station id */
2548 if (((fc & IEEE80211_FCTL_FTYPE) != IEEE80211_FTYPE_DATA) ||
2549 is_multicast_ether_addr(hdr->addr1))
2550 return priv->hw_setting.bcast_sta_id;
2551
2552 switch (priv->iw_mode) {
2553
2554 /* If we are a client station in a BSS network, use the special
2555 * AP station entry (that's the only station we communicate with) */
2556 case IEEE80211_IF_TYPE_STA:
2557 return IWL_AP_ID;
2558
2559 /* If we are an AP, then find the station, or use BCAST */
2560 case IEEE80211_IF_TYPE_AP:
2561 sta_id = iwl3945_hw_find_station(priv, hdr->addr1);
2562 if (sta_id != IWL_INVALID_STATION)
2563 return sta_id;
2564 return priv->hw_setting.bcast_sta_id;
2565
2566 /* If this frame is going out to an IBSS network, find the station,
2567 * or create a new station table entry */
2568 case IEEE80211_IF_TYPE_IBSS: {
2569 DECLARE_MAC_BUF(mac);
2570
2571 /* Create new station table entry */
2572 sta_id = iwl3945_hw_find_station(priv, hdr->addr1);
2573 if (sta_id != IWL_INVALID_STATION)
2574 return sta_id;
2575
2576 sta_id = iwl3945_add_station(priv, hdr->addr1, 0, CMD_ASYNC);
2577
2578 if (sta_id != IWL_INVALID_STATION)
2579 return sta_id;
2580
2581 IWL_DEBUG_DROP("Station %s not in station map. "
2582 "Defaulting to broadcast...\n",
2583 print_mac(mac, hdr->addr1));
2584 iwl3945_print_hex_dump(IWL_DL_DROP, (u8 *) hdr, sizeof(*hdr));
2585 return priv->hw_setting.bcast_sta_id;
2586 }
2587 default:
2588 IWL_WARNING("Unknown mode of operation: %d", priv->iw_mode);
2589 return priv->hw_setting.bcast_sta_id;
2590 }
2591 }
2592
2593 /*
2594 * start REPLY_TX command process
2595 */
2596 static int iwl3945_tx_skb(struct iwl3945_priv *priv,
2597 struct sk_buff *skb, struct ieee80211_tx_control *ctl)
2598 {
2599 struct ieee80211_hdr *hdr = (struct ieee80211_hdr *)skb->data;
2600 struct iwl3945_tfd_frame *tfd;
2601 u32 *control_flags;
2602 int txq_id = ctl->queue;
2603 struct iwl3945_tx_queue *txq = NULL;
2604 struct iwl3945_queue *q = NULL;
2605 dma_addr_t phys_addr;
2606 dma_addr_t txcmd_phys;
2607 struct iwl3945_cmd *out_cmd = NULL;
2608 u16 len, idx, len_org;
2609 u8 id, hdr_len, unicast;
2610 u8 sta_id;
2611 u16 seq_number = 0;
2612 u16 fc;
2613 __le16 *qc;
2614 u8 wait_write_ptr = 0;
2615 unsigned long flags;
2616 int rc;
2617
2618 spin_lock_irqsave(&priv->lock, flags);
2619 if (iwl3945_is_rfkill(priv)) {
2620 IWL_DEBUG_DROP("Dropping - RF KILL\n");
2621 goto drop_unlock;
2622 }
2623
2624 if (!priv->vif) {
2625 IWL_DEBUG_DROP("Dropping - !priv->vif\n");
2626 goto drop_unlock;
2627 }
2628
2629 if ((ctl->tx_rate->hw_value & 0xFF) == IWL_INVALID_RATE) {
2630 IWL_ERROR("ERROR: No TX rate available.\n");
2631 goto drop_unlock;
2632 }
2633
2634 unicast = !is_multicast_ether_addr(hdr->addr1);
2635 id = 0;
2636
2637 fc = le16_to_cpu(hdr->frame_control);
2638
2639 #ifdef CONFIG_IWL3945_DEBUG
2640 if (ieee80211_is_auth(fc))
2641 IWL_DEBUG_TX("Sending AUTH frame\n");
2642 else if (ieee80211_is_assoc_request(fc))
2643 IWL_DEBUG_TX("Sending ASSOC frame\n");
2644 else if (ieee80211_is_reassoc_request(fc))
2645 IWL_DEBUG_TX("Sending REASSOC frame\n");
2646 #endif
2647
2648 /* drop all data frame if we are not associated */
2649 if ((!iwl3945_is_associated(priv) ||
2650 ((priv->iw_mode == IEEE80211_IF_TYPE_STA) && !priv->assoc_id)) &&
2651 ((fc & IEEE80211_FCTL_FTYPE) == IEEE80211_FTYPE_DATA)) {
2652 IWL_DEBUG_DROP("Dropping - !iwl3945_is_associated\n");
2653 goto drop_unlock;
2654 }
2655
2656 spin_unlock_irqrestore(&priv->lock, flags);
2657
2658 hdr_len = ieee80211_get_hdrlen(fc);
2659
2660 /* Find (or create) index into station table for destination station */
2661 sta_id = iwl3945_get_sta_id(priv, hdr);
2662 if (sta_id == IWL_INVALID_STATION) {
2663 DECLARE_MAC_BUF(mac);
2664
2665 IWL_DEBUG_DROP("Dropping - INVALID STATION: %s\n",
2666 print_mac(mac, hdr->addr1));
2667 goto drop;
2668 }
2669
2670 IWL_DEBUG_RATE("station Id %d\n", sta_id);
2671
2672 qc = ieee80211_get_qos_ctrl(hdr);
2673 if (qc) {
2674 u8 tid = (u8)(le16_to_cpu(*qc) & 0xf);
2675 seq_number = priv->stations[sta_id].tid[tid].seq_number &
2676 IEEE80211_SCTL_SEQ;
2677 hdr->seq_ctrl = cpu_to_le16(seq_number) |
2678 (hdr->seq_ctrl &
2679 __constant_cpu_to_le16(IEEE80211_SCTL_FRAG));
2680 seq_number += 0x10;
2681 }
2682
2683 /* Descriptor for chosen Tx queue */
2684 txq = &priv->txq[txq_id];
2685 q = &txq->q;
2686
2687 spin_lock_irqsave(&priv->lock, flags);
2688
2689 /* Set up first empty TFD within this queue's circular TFD buffer */
2690 tfd = &txq->bd[q->write_ptr];
2691 memset(tfd, 0, sizeof(*tfd));
2692 control_flags = (u32 *) tfd;
2693 idx = get_cmd_index(q, q->write_ptr, 0);
2694
2695 /* Set up driver data for this TFD */
2696 memset(&(txq->txb[q->write_ptr]), 0, sizeof(struct iwl3945_tx_info));
2697 txq->txb[q->write_ptr].skb[0] = skb;
2698 memcpy(&(txq->txb[q->write_ptr].status.control),
2699 ctl, sizeof(struct ieee80211_tx_control));
2700
2701 /* Init first empty entry in queue's array of Tx/cmd buffers */
2702 out_cmd = &txq->cmd[idx];
2703 memset(&out_cmd->hdr, 0, sizeof(out_cmd->hdr));
2704 memset(&out_cmd->cmd.tx, 0, sizeof(out_cmd->cmd.tx));
2705
2706 /*
2707 * Set up the Tx-command (not MAC!) header.
2708 * Store the chosen Tx queue and TFD index within the sequence field;
2709 * after Tx, uCode's Tx response will return this value so driver can
2710 * locate the frame within the tx queue and do post-tx processing.
2711 */
2712 out_cmd->hdr.cmd = REPLY_TX;
2713 out_cmd->hdr.sequence = cpu_to_le16((u16)(QUEUE_TO_SEQ(txq_id) |
2714 INDEX_TO_SEQ(q->write_ptr)));
2715
2716 /* Copy MAC header from skb into command buffer */
2717 memcpy(out_cmd->cmd.tx.hdr, hdr, hdr_len);
2718
2719 /*
2720 * Use the first empty entry in this queue's command buffer array
2721 * to contain the Tx command and MAC header concatenated together
2722 * (payload data will be in another buffer).
2723 * Size of this varies, due to varying MAC header length.
2724 * If end is not dword aligned, we'll have 2 extra bytes at the end
2725 * of the MAC header (device reads on dword boundaries).
2726 * We'll tell device about this padding later.
2727 */
2728 len = priv->hw_setting.tx_cmd_len +
2729 sizeof(struct iwl3945_cmd_header) + hdr_len;
2730
2731 len_org = len;
2732 len = (len + 3) & ~3;
2733
2734 if (len_org != len)
2735 len_org = 1;
2736 else
2737 len_org = 0;
2738
2739 /* Physical address of this Tx command's header (not MAC header!),
2740 * within command buffer array. */
2741 txcmd_phys = txq->dma_addr_cmd + sizeof(struct iwl3945_cmd) * idx +
2742 offsetof(struct iwl3945_cmd, hdr);
2743
2744 /* Add buffer containing Tx command and MAC(!) header to TFD's
2745 * first entry */
2746 iwl3945_hw_txq_attach_buf_to_tfd(priv, tfd, txcmd_phys, len);
2747
2748 if (!(ctl->flags & IEEE80211_TXCTL_DO_NOT_ENCRYPT))
2749 iwl3945_build_tx_cmd_hwcrypto(priv, ctl, out_cmd, skb, 0);
2750
2751 /* Set up TFD's 2nd entry to point directly to remainder of skb,
2752 * if any (802.11 null frames have no payload). */
2753 len = skb->len - hdr_len;
2754 if (len) {
2755 phys_addr = pci_map_single(priv->pci_dev, skb->data + hdr_len,
2756 len, PCI_DMA_TODEVICE);
2757 iwl3945_hw_txq_attach_buf_to_tfd(priv, tfd, phys_addr, len);
2758 }
2759
2760 if (!len)
2761 /* If there is no payload, then we use only one Tx buffer */
2762 *control_flags = TFD_CTL_COUNT_SET(1);
2763 else
2764 /* Else use 2 buffers.
2765 * Tell 3945 about any padding after MAC header */
2766 *control_flags = TFD_CTL_COUNT_SET(2) |
2767 TFD_CTL_PAD_SET(U32_PAD(len));
2768
2769 /* Total # bytes to be transmitted */
2770 len = (u16)skb->len;
2771 out_cmd->cmd.tx.len = cpu_to_le16(len);
2772
2773 /* TODO need this for burst mode later on */
2774 iwl3945_build_tx_cmd_basic(priv, out_cmd, ctl, hdr, unicast, sta_id);
2775
2776 /* set is_hcca to 0; it probably will never be implemented */
2777 iwl3945_hw_build_tx_cmd_rate(priv, out_cmd, ctl, hdr, sta_id, 0);
2778
2779 out_cmd->cmd.tx.tx_flags &= ~TX_CMD_FLG_ANT_A_MSK;
2780 out_cmd->cmd.tx.tx_flags &= ~TX_CMD_FLG_ANT_B_MSK;
2781
2782 if (!ieee80211_get_morefrag(hdr)) {
2783 txq->need_update = 1;
2784 if (qc) {
2785 u8 tid = (u8)(le16_to_cpu(*qc) & 0xf);
2786 priv->stations[sta_id].tid[tid].seq_number = seq_number;
2787 }
2788 } else {
2789 wait_write_ptr = 1;
2790 txq->need_update = 0;
2791 }
2792
2793 iwl3945_print_hex_dump(IWL_DL_TX, out_cmd->cmd.payload,
2794 sizeof(out_cmd->cmd.tx));
2795
2796 iwl3945_print_hex_dump(IWL_DL_TX, (u8 *)out_cmd->cmd.tx.hdr,
2797 ieee80211_get_hdrlen(fc));
2798
2799 /* Tell device the write index *just past* this latest filled TFD */
2800 q->write_ptr = iwl3945_queue_inc_wrap(q->write_ptr, q->n_bd);
2801 rc = iwl3945_tx_queue_update_write_ptr(priv, txq);
2802 spin_unlock_irqrestore(&priv->lock, flags);
2803
2804 if (rc)
2805 return rc;
2806
2807 if ((iwl3945_queue_space(q) < q->high_mark)
2808 && priv->mac80211_registered) {
2809 if (wait_write_ptr) {
2810 spin_lock_irqsave(&priv->lock, flags);
2811 txq->need_update = 1;
2812 iwl3945_tx_queue_update_write_ptr(priv, txq);
2813 spin_unlock_irqrestore(&priv->lock, flags);
2814 }
2815
2816 ieee80211_stop_queue(priv->hw, ctl->queue);
2817 }
2818
2819 return 0;
2820
2821 drop_unlock:
2822 spin_unlock_irqrestore(&priv->lock, flags);
2823 drop:
2824 return -1;
2825 }
2826
2827 static void iwl3945_set_rate(struct iwl3945_priv *priv)
2828 {
2829 const struct ieee80211_supported_band *sband = NULL;
2830 struct ieee80211_rate *rate;
2831 int i;
2832
2833 sband = iwl3945_get_band(priv, priv->band);
2834 if (!sband) {
2835 IWL_ERROR("Failed to set rate: unable to get hw mode\n");
2836 return;
2837 }
2838
2839 priv->active_rate = 0;
2840 priv->active_rate_basic = 0;
2841
2842 IWL_DEBUG_RATE("Setting rates for %s GHz\n",
2843 sband->band == IEEE80211_BAND_2GHZ ? "2.4" : "5");
2844
2845 for (i = 0; i < sband->n_bitrates; i++) {
2846 rate = &sband->bitrates[i];
2847 if ((rate->hw_value < IWL_RATE_COUNT) &&
2848 !(rate->flags & IEEE80211_CHAN_DISABLED)) {
2849 IWL_DEBUG_RATE("Adding rate index %d (plcp %d)\n",
2850 rate->hw_value, iwl3945_rates[rate->hw_value].plcp);
2851 priv->active_rate |= (1 << rate->hw_value);
2852 }
2853 }
2854
2855 IWL_DEBUG_RATE("Set active_rate = %0x, active_rate_basic = %0x\n",
2856 priv->active_rate, priv->active_rate_basic);
2857
2858 /*
2859 * If a basic rate is configured, then use it (adding IWL_RATE_1M_MASK)
2860 * otherwise set it to the default of all CCK rates and 6, 12, 24 for
2861 * OFDM
2862 */
2863 if (priv->active_rate_basic & IWL_CCK_BASIC_RATES_MASK)
2864 priv->staging_rxon.cck_basic_rates =
2865 ((priv->active_rate_basic &
2866 IWL_CCK_RATES_MASK) >> IWL_FIRST_CCK_RATE) & 0xF;
2867 else
2868 priv->staging_rxon.cck_basic_rates =
2869 (IWL_CCK_BASIC_RATES_MASK >> IWL_FIRST_CCK_RATE) & 0xF;
2870
2871 if (priv->active_rate_basic & IWL_OFDM_BASIC_RATES_MASK)
2872 priv->staging_rxon.ofdm_basic_rates =
2873 ((priv->active_rate_basic &
2874 (IWL_OFDM_BASIC_RATES_MASK | IWL_RATE_6M_MASK)) >>
2875 IWL_FIRST_OFDM_RATE) & 0xFF;
2876 else
2877 priv->staging_rxon.ofdm_basic_rates =
2878 (IWL_OFDM_BASIC_RATES_MASK >> IWL_FIRST_OFDM_RATE) & 0xFF;
2879 }
2880
2881 static void iwl3945_radio_kill_sw(struct iwl3945_priv *priv, int disable_radio)
2882 {
2883 unsigned long flags;
2884
2885 if (!!disable_radio == test_bit(STATUS_RF_KILL_SW, &priv->status))
2886 return;
2887
2888 IWL_DEBUG_RF_KILL("Manual SW RF KILL set to: RADIO %s\n",
2889 disable_radio ? "OFF" : "ON");
2890
2891 if (disable_radio) {
2892 iwl3945_scan_cancel(priv);
2893 /* FIXME: This is a workaround for AP */
2894 if (priv->iw_mode != IEEE80211_IF_TYPE_AP) {
2895 spin_lock_irqsave(&priv->lock, flags);
2896 iwl3945_write32(priv, CSR_UCODE_DRV_GP1_SET,
2897 CSR_UCODE_SW_BIT_RFKILL);
2898 spin_unlock_irqrestore(&priv->lock, flags);
2899 iwl3945_send_card_state(priv, CARD_STATE_CMD_DISABLE, 0);
2900 set_bit(STATUS_RF_KILL_SW, &priv->status);
2901 }
2902 return;
2903 }
2904
2905 spin_lock_irqsave(&priv->lock, flags);
2906 iwl3945_write32(priv, CSR_UCODE_DRV_GP1_CLR, CSR_UCODE_SW_BIT_RFKILL);
2907
2908 clear_bit(STATUS_RF_KILL_SW, &priv->status);
2909 spin_unlock_irqrestore(&priv->lock, flags);
2910
2911 /* wake up ucode */
2912 msleep(10);
2913
2914 spin_lock_irqsave(&priv->lock, flags);
2915 iwl3945_read32(priv, CSR_UCODE_DRV_GP1);
2916 if (!iwl3945_grab_nic_access(priv))
2917 iwl3945_release_nic_access(priv);
2918 spin_unlock_irqrestore(&priv->lock, flags);
2919
2920 if (test_bit(STATUS_RF_KILL_HW, &priv->status)) {
2921 IWL_DEBUG_RF_KILL("Can not turn radio back on - "
2922 "disabled by HW switch\n");
2923 return;
2924 }
2925
2926 queue_work(priv->workqueue, &priv->restart);
2927 return;
2928 }
2929
2930 void iwl3945_set_decrypted_flag(struct iwl3945_priv *priv, struct sk_buff *skb,
2931 u32 decrypt_res, struct ieee80211_rx_status *stats)
2932 {
2933 u16 fc =
2934 le16_to_cpu(((struct ieee80211_hdr *)skb->data)->frame_control);
2935
2936 if (priv->active_rxon.filter_flags & RXON_FILTER_DIS_DECRYPT_MSK)
2937 return;
2938
2939 if (!(fc & IEEE80211_FCTL_PROTECTED))
2940 return;
2941
2942 IWL_DEBUG_RX("decrypt_res:0x%x\n", decrypt_res);
2943 switch (decrypt_res & RX_RES_STATUS_SEC_TYPE_MSK) {
2944 case RX_RES_STATUS_SEC_TYPE_TKIP:
2945 if ((decrypt_res & RX_RES_STATUS_DECRYPT_TYPE_MSK) ==
2946 RX_RES_STATUS_BAD_ICV_MIC)
2947 stats->flag |= RX_FLAG_MMIC_ERROR;
2948 case RX_RES_STATUS_SEC_TYPE_WEP:
2949 case RX_RES_STATUS_SEC_TYPE_CCMP:
2950 if ((decrypt_res & RX_RES_STATUS_DECRYPT_TYPE_MSK) ==
2951 RX_RES_STATUS_DECRYPT_OK) {
2952 IWL_DEBUG_RX("hw decrypt successfully!!!\n");
2953 stats->flag |= RX_FLAG_DECRYPTED;
2954 }
2955 break;
2956
2957 default:
2958 break;
2959 }
2960 }
2961
2962 #define IWL_PACKET_RETRY_TIME HZ
2963
2964 int iwl3945_is_duplicate_packet(struct iwl3945_priv *priv, struct ieee80211_hdr *header)
2965 {
2966 u16 sc = le16_to_cpu(header->seq_ctrl);
2967 u16 seq = (sc & IEEE80211_SCTL_SEQ) >> 4;
2968 u16 frag = sc & IEEE80211_SCTL_FRAG;
2969 u16 *last_seq, *last_frag;
2970 unsigned long *last_time;
2971
2972 switch (priv->iw_mode) {
2973 case IEEE80211_IF_TYPE_IBSS:{
2974 struct list_head *p;
2975 struct iwl3945_ibss_seq *entry = NULL;
2976 u8 *mac = header->addr2;
2977 int index = mac[5] & (IWL_IBSS_MAC_HASH_SIZE - 1);
2978
2979 __list_for_each(p, &priv->ibss_mac_hash[index]) {
2980 entry = list_entry(p, struct iwl3945_ibss_seq, list);
2981 if (!compare_ether_addr(entry->mac, mac))
2982 break;
2983 }
2984 if (p == &priv->ibss_mac_hash[index]) {
2985 entry = kzalloc(sizeof(*entry), GFP_ATOMIC);
2986 if (!entry) {
2987 IWL_ERROR("Cannot malloc new mac entry\n");
2988 return 0;
2989 }
2990 memcpy(entry->mac, mac, ETH_ALEN);
2991 entry->seq_num = seq;
2992 entry->frag_num = frag;
2993 entry->packet_time = jiffies;
2994 list_add(&entry->list, &priv->ibss_mac_hash[index]);
2995 return 0;
2996 }
2997 last_seq = &entry->seq_num;
2998 last_frag = &entry->frag_num;
2999 last_time = &entry->packet_time;
3000 break;
3001 }
3002 case IEEE80211_IF_TYPE_STA:
3003 last_seq = &priv->last_seq_num;
3004 last_frag = &priv->last_frag_num;
3005 last_time = &priv->last_packet_time;
3006 break;
3007 default:
3008 return 0;
3009 }
3010 if ((*last_seq == seq) &&
3011 time_after(*last_time + IWL_PACKET_RETRY_TIME, jiffies)) {
3012 if (*last_frag == frag)
3013 goto drop;
3014 if (*last_frag + 1 != frag)
3015 /* out-of-order fragment */
3016 goto drop;
3017 } else
3018 *last_seq = seq;
3019
3020 *last_frag = frag;
3021 *last_time = jiffies;
3022 return 0;
3023
3024 drop:
3025 return 1;
3026 }
3027
3028 #ifdef CONFIG_IWL3945_SPECTRUM_MEASUREMENT
3029
3030 #include "iwl-spectrum.h"
3031
3032 #define BEACON_TIME_MASK_LOW 0x00FFFFFF
3033 #define BEACON_TIME_MASK_HIGH 0xFF000000
3034 #define TIME_UNIT 1024
3035
3036 /*
3037 * extended beacon time format
3038 * time in usec will be changed into a 32-bit value in 8:24 format
3039 * the high 1 byte is the beacon counts
3040 * the lower 3 bytes is the time in usec within one beacon interval
3041 */
3042
3043 static u32 iwl3945_usecs_to_beacons(u32 usec, u32 beacon_interval)
3044 {
3045 u32 quot;
3046 u32 rem;
3047 u32 interval = beacon_interval * 1024;
3048
3049 if (!interval || !usec)
3050 return 0;
3051
3052 quot = (usec / interval) & (BEACON_TIME_MASK_HIGH >> 24);
3053 rem = (usec % interval) & BEACON_TIME_MASK_LOW;
3054
3055 return (quot << 24) + rem;
3056 }
3057
3058 /* base is usually what we get from ucode with each received frame,
3059 * the same as HW timer counter counting down
3060 */
3061
3062 static __le32 iwl3945_add_beacon_time(u32 base, u32 addon, u32 beacon_interval)
3063 {
3064 u32 base_low = base & BEACON_TIME_MASK_LOW;
3065 u32 addon_low = addon & BEACON_TIME_MASK_LOW;
3066 u32 interval = beacon_interval * TIME_UNIT;
3067 u32 res = (base & BEACON_TIME_MASK_HIGH) +
3068 (addon & BEACON_TIME_MASK_HIGH);
3069
3070 if (base_low > addon_low)
3071 res += base_low - addon_low;
3072 else if (base_low < addon_low) {
3073 res += interval + base_low - addon_low;
3074 res += (1 << 24);
3075 } else
3076 res += (1 << 24);
3077
3078 return cpu_to_le32(res);
3079 }
3080
3081 static int iwl3945_get_measurement(struct iwl3945_priv *priv,
3082 struct ieee80211_measurement_params *params,
3083 u8 type)
3084 {
3085 struct iwl3945_spectrum_cmd spectrum;
3086 struct iwl3945_rx_packet *res;
3087 struct iwl3945_host_cmd cmd = {
3088 .id = REPLY_SPECTRUM_MEASUREMENT_CMD,
3089 .data = (void *)&spectrum,
3090 .meta.flags = CMD_WANT_SKB,
3091 };
3092 u32 add_time = le64_to_cpu(params->start_time);
3093 int rc;
3094 int spectrum_resp_status;
3095 int duration = le16_to_cpu(params->duration);
3096
3097 if (iwl3945_is_associated(priv))
3098 add_time =
3099 iwl3945_usecs_to_beacons(
3100 le64_to_cpu(params->start_time) - priv->last_tsf,
3101 le16_to_cpu(priv->rxon_timing.beacon_interval));
3102
3103 memset(&spectrum, 0, sizeof(spectrum));
3104
3105 spectrum.channel_count = cpu_to_le16(1);
3106 spectrum.flags =
3107 RXON_FLG_TSF2HOST_MSK | RXON_FLG_ANT_A_MSK | RXON_FLG_DIS_DIV_MSK;
3108 spectrum.filter_flags = MEASUREMENT_FILTER_FLAG;
3109 cmd.len = sizeof(spectrum);
3110 spectrum.len = cpu_to_le16(cmd.len - sizeof(spectrum.len));
3111
3112 if (iwl3945_is_associated(priv))
3113 spectrum.start_time =
3114 iwl3945_add_beacon_time(priv->last_beacon_time,
3115 add_time,
3116 le16_to_cpu(priv->rxon_timing.beacon_interval));
3117 else
3118 spectrum.start_time = 0;
3119
3120 spectrum.channels[0].duration = cpu_to_le32(duration * TIME_UNIT);
3121 spectrum.channels[0].channel = params->channel;
3122 spectrum.channels[0].type = type;
3123 if (priv->active_rxon.flags & RXON_FLG_BAND_24G_MSK)
3124 spectrum.flags |= RXON_FLG_BAND_24G_MSK |
3125 RXON_FLG_AUTO_DETECT_MSK | RXON_FLG_TGG_PROTECT_MSK;
3126
3127 rc = iwl3945_send_cmd_sync(priv, &cmd);
3128 if (rc)
3129 return rc;
3130
3131 res = (struct iwl3945_rx_packet *)cmd.meta.u.skb->data;
3132 if (res->hdr.flags & IWL_CMD_FAILED_MSK) {
3133 IWL_ERROR("Bad return from REPLY_RX_ON_ASSOC command\n");
3134 rc = -EIO;
3135 }
3136
3137 spectrum_resp_status = le16_to_cpu(res->u.spectrum.status);
3138 switch (spectrum_resp_status) {
3139 case 0: /* Command will be handled */
3140 if (res->u.spectrum.id != 0xff) {
3141 IWL_DEBUG_INFO("Replaced existing measurement: %d\n",
3142 res->u.spectrum.id);
3143 priv->measurement_status &= ~MEASUREMENT_READY;
3144 }
3145 priv->measurement_status |= MEASUREMENT_ACTIVE;
3146 rc = 0;
3147 break;
3148
3149 case 1: /* Command will not be handled */
3150 rc = -EAGAIN;
3151 break;
3152 }
3153
3154 dev_kfree_skb_any(cmd.meta.u.skb);
3155
3156 return rc;
3157 }
3158 #endif
3159
3160 static void iwl3945_txstatus_to_ieee(struct iwl3945_priv *priv,
3161 struct iwl3945_tx_info *tx_sta)
3162 {
3163
3164 tx_sta->status.ack_signal = 0;
3165 tx_sta->status.excessive_retries = 0;
3166 tx_sta->status.queue_length = 0;
3167 tx_sta->status.queue_number = 0;
3168
3169 if (in_interrupt())
3170 ieee80211_tx_status_irqsafe(priv->hw,
3171 tx_sta->skb[0], &(tx_sta->status));
3172 else
3173 ieee80211_tx_status(priv->hw,
3174 tx_sta->skb[0], &(tx_sta->status));
3175
3176 tx_sta->skb[0] = NULL;
3177 }
3178
3179 /**
3180 * iwl3945_tx_queue_reclaim - Reclaim Tx queue entries already Tx'd
3181 *
3182 * When FW advances 'R' index, all entries between old and new 'R' index
3183 * need to be reclaimed. As result, some free space forms. If there is
3184 * enough free space (> low mark), wake the stack that feeds us.
3185 */
3186 static int iwl3945_tx_queue_reclaim(struct iwl3945_priv *priv, int txq_id, int index)
3187 {
3188 struct iwl3945_tx_queue *txq = &priv->txq[txq_id];
3189 struct iwl3945_queue *q = &txq->q;
3190 int nfreed = 0;
3191
3192 if ((index >= q->n_bd) || (x2_queue_used(q, index) == 0)) {
3193 IWL_ERROR("Read index for DMA queue txq id (%d), index %d, "
3194 "is out of range [0-%d] %d %d.\n", txq_id,
3195 index, q->n_bd, q->write_ptr, q->read_ptr);
3196 return 0;
3197 }
3198
3199 for (index = iwl3945_queue_inc_wrap(index, q->n_bd);
3200 q->read_ptr != index;
3201 q->read_ptr = iwl3945_queue_inc_wrap(q->read_ptr, q->n_bd)) {
3202 if (txq_id != IWL_CMD_QUEUE_NUM) {
3203 iwl3945_txstatus_to_ieee(priv,
3204 &(txq->txb[txq->q.read_ptr]));
3205 iwl3945_hw_txq_free_tfd(priv, txq);
3206 } else if (nfreed > 1) {
3207 IWL_ERROR("HCMD skipped: index (%d) %d %d\n", index,
3208 q->write_ptr, q->read_ptr);
3209 queue_work(priv->workqueue, &priv->restart);
3210 }
3211 nfreed++;
3212 }
3213
3214 if (iwl3945_queue_space(q) > q->low_mark && (txq_id >= 0) &&
3215 (txq_id != IWL_CMD_QUEUE_NUM) &&
3216 priv->mac80211_registered)
3217 ieee80211_wake_queue(priv->hw, txq_id);
3218
3219
3220 return nfreed;
3221 }
3222
3223 static int iwl3945_is_tx_success(u32 status)
3224 {
3225 return (status & 0xFF) == 0x1;
3226 }
3227
3228 /******************************************************************************
3229 *
3230 * Generic RX handler implementations
3231 *
3232 ******************************************************************************/
3233 /**
3234 * iwl3945_rx_reply_tx - Handle Tx response
3235 */
3236 static void iwl3945_rx_reply_tx(struct iwl3945_priv *priv,
3237 struct iwl3945_rx_mem_buffer *rxb)
3238 {
3239 struct iwl3945_rx_packet *pkt = (void *)rxb->skb->data;
3240 u16 sequence = le16_to_cpu(pkt->hdr.sequence);
3241 int txq_id = SEQ_TO_QUEUE(sequence);
3242 int index = SEQ_TO_INDEX(sequence);
3243 struct iwl3945_tx_queue *txq = &priv->txq[txq_id];
3244 struct ieee80211_tx_status *tx_status;
3245 struct iwl3945_tx_resp *tx_resp = (void *)&pkt->u.raw[0];
3246 u32 status = le32_to_cpu(tx_resp->status);
3247
3248 if ((index >= txq->q.n_bd) || (x2_queue_used(&txq->q, index) == 0)) {
3249 IWL_ERROR("Read index for DMA queue txq_id (%d) index %d "
3250 "is out of range [0-%d] %d %d\n", txq_id,
3251 index, txq->q.n_bd, txq->q.write_ptr,
3252 txq->q.read_ptr);
3253 return;
3254 }
3255
3256 tx_status = &(txq->txb[txq->q.read_ptr].status);
3257
3258 tx_status->retry_count = tx_resp->failure_frame;
3259 tx_status->queue_number = status;
3260 tx_status->queue_length = tx_resp->bt_kill_count;
3261 tx_status->queue_length |= tx_resp->failure_rts;
3262
3263 tx_status->flags =
3264 iwl3945_is_tx_success(status) ? IEEE80211_TX_STATUS_ACK : 0;
3265
3266 IWL_DEBUG_TX("Tx queue %d Status %s (0x%08x) plcp rate %d retries %d\n",
3267 txq_id, iwl3945_get_tx_fail_reason(status), status,
3268 tx_resp->rate, tx_resp->failure_frame);
3269
3270 IWL_DEBUG_TX_REPLY("Tx queue reclaim %d\n", index);
3271 if (index != -1)
3272 iwl3945_tx_queue_reclaim(priv, txq_id, index);
3273
3274 if (iwl_check_bits(status, TX_ABORT_REQUIRED_MSK))
3275 IWL_ERROR("TODO: Implement Tx ABORT REQUIRED!!!\n");
3276 }
3277
3278
3279 static void iwl3945_rx_reply_alive(struct iwl3945_priv *priv,
3280 struct iwl3945_rx_mem_buffer *rxb)
3281 {
3282 struct iwl3945_rx_packet *pkt = (void *)rxb->skb->data;
3283 struct iwl3945_alive_resp *palive;
3284 struct delayed_work *pwork;
3285
3286 palive = &pkt->u.alive_frame;
3287
3288 IWL_DEBUG_INFO("Alive ucode status 0x%08X revision "
3289 "0x%01X 0x%01X\n",
3290 palive->is_valid, palive->ver_type,
3291 palive->ver_subtype);
3292
3293 if (palive->ver_subtype == INITIALIZE_SUBTYPE) {
3294 IWL_DEBUG_INFO("Initialization Alive received.\n");
3295 memcpy(&priv->card_alive_init,
3296 &pkt->u.alive_frame,
3297 sizeof(struct iwl3945_init_alive_resp));
3298 pwork = &priv->init_alive_start;
3299 } else {
3300 IWL_DEBUG_INFO("Runtime Alive received.\n");
3301 memcpy(&priv->card_alive, &pkt->u.alive_frame,
3302 sizeof(struct iwl3945_alive_resp));
3303 pwork = &priv->alive_start;
3304 iwl3945_disable_events(priv);
3305 }
3306
3307 /* We delay the ALIVE response by 5ms to
3308 * give the HW RF Kill time to activate... */
3309 if (palive->is_valid == UCODE_VALID_OK)
3310 queue_delayed_work(priv->workqueue, pwork,
3311 msecs_to_jiffies(5));
3312 else
3313 IWL_WARNING("uCode did not respond OK.\n");
3314 }
3315
3316 static void iwl3945_rx_reply_add_sta(struct iwl3945_priv *priv,
3317 struct iwl3945_rx_mem_buffer *rxb)
3318 {
3319 struct iwl3945_rx_packet *pkt = (void *)rxb->skb->data;
3320
3321 IWL_DEBUG_RX("Received REPLY_ADD_STA: 0x%02X\n", pkt->u.status);
3322 return;
3323 }
3324
3325 static void iwl3945_rx_reply_error(struct iwl3945_priv *priv,
3326 struct iwl3945_rx_mem_buffer *rxb)
3327 {
3328 struct iwl3945_rx_packet *pkt = (void *)rxb->skb->data;
3329
3330 IWL_ERROR("Error Reply type 0x%08X cmd %s (0x%02X) "
3331 "seq 0x%04X ser 0x%08X\n",
3332 le32_to_cpu(pkt->u.err_resp.error_type),
3333 get_cmd_string(pkt->u.err_resp.cmd_id),
3334 pkt->u.err_resp.cmd_id,
3335 le16_to_cpu(pkt->u.err_resp.bad_cmd_seq_num),
3336 le32_to_cpu(pkt->u.err_resp.error_info));
3337 }
3338
3339 #define TX_STATUS_ENTRY(x) case TX_STATUS_FAIL_ ## x: return #x
3340
3341 static void iwl3945_rx_csa(struct iwl3945_priv *priv, struct iwl3945_rx_mem_buffer *rxb)
3342 {
3343 struct iwl3945_rx_packet *pkt = (void *)rxb->skb->data;
3344 struct iwl3945_rxon_cmd *rxon = (void *)&priv->active_rxon;
3345 struct iwl3945_csa_notification *csa = &(pkt->u.csa_notif);
3346 IWL_DEBUG_11H("CSA notif: channel %d, status %d\n",
3347 le16_to_cpu(csa->channel), le32_to_cpu(csa->status));
3348 rxon->channel = csa->channel;
3349 priv->staging_rxon.channel = csa->channel;
3350 }
3351
3352 static void iwl3945_rx_spectrum_measure_notif(struct iwl3945_priv *priv,
3353 struct iwl3945_rx_mem_buffer *rxb)
3354 {
3355 #ifdef CONFIG_IWL3945_SPECTRUM_MEASUREMENT
3356 struct iwl3945_rx_packet *pkt = (void *)rxb->skb->data;
3357 struct iwl3945_spectrum_notification *report = &(pkt->u.spectrum_notif);
3358
3359 if (!report->state) {
3360 IWL_DEBUG(IWL_DL_11H | IWL_DL_INFO,
3361 "Spectrum Measure Notification: Start\n");
3362 return;
3363 }
3364
3365 memcpy(&priv->measure_report, report, sizeof(*report));
3366 priv->measurement_status |= MEASUREMENT_READY;
3367 #endif
3368 }
3369
3370 static void iwl3945_rx_pm_sleep_notif(struct iwl3945_priv *priv,
3371 struct iwl3945_rx_mem_buffer *rxb)
3372 {
3373 #ifdef CONFIG_IWL3945_DEBUG
3374 struct iwl3945_rx_packet *pkt = (void *)rxb->skb->data;
3375 struct iwl3945_sleep_notification *sleep = &(pkt->u.sleep_notif);
3376 IWL_DEBUG_RX("sleep mode: %d, src: %d\n",
3377 sleep->pm_sleep_mode, sleep->pm_wakeup_src);
3378 #endif
3379 }
3380
3381 static void iwl3945_rx_pm_debug_statistics_notif(struct iwl3945_priv *priv,
3382 struct iwl3945_rx_mem_buffer *rxb)
3383 {
3384 struct iwl3945_rx_packet *pkt = (void *)rxb->skb->data;
3385 IWL_DEBUG_RADIO("Dumping %d bytes of unhandled "
3386 "notification for %s:\n",
3387 le32_to_cpu(pkt->len), get_cmd_string(pkt->hdr.cmd));
3388 iwl3945_print_hex_dump(IWL_DL_RADIO, pkt->u.raw, le32_to_cpu(pkt->len));
3389 }
3390
3391 static void iwl3945_bg_beacon_update(struct work_struct *work)
3392 {
3393 struct iwl3945_priv *priv =
3394 container_of(work, struct iwl3945_priv, beacon_update);
3395 struct sk_buff *beacon;
3396
3397 /* Pull updated AP beacon from mac80211. will fail if not in AP mode */
3398 beacon = ieee80211_beacon_get(priv->hw, priv->vif, NULL);
3399
3400 if (!beacon) {
3401 IWL_ERROR("update beacon failed\n");
3402 return;
3403 }
3404
3405 mutex_lock(&priv->mutex);
3406 /* new beacon skb is allocated every time; dispose previous.*/
3407 if (priv->ibss_beacon)
3408 dev_kfree_skb(priv->ibss_beacon);
3409
3410 priv->ibss_beacon = beacon;
3411 mutex_unlock(&priv->mutex);
3412
3413 iwl3945_send_beacon_cmd(priv);
3414 }
3415
3416 static void iwl3945_rx_beacon_notif(struct iwl3945_priv *priv,
3417 struct iwl3945_rx_mem_buffer *rxb)
3418 {
3419 #ifdef CONFIG_IWL3945_DEBUG
3420 struct iwl3945_rx_packet *pkt = (void *)rxb->skb->data;
3421 struct iwl3945_beacon_notif *beacon = &(pkt->u.beacon_status);
3422 u8 rate = beacon->beacon_notify_hdr.rate;
3423
3424 IWL_DEBUG_RX("beacon status %x retries %d iss %d "
3425 "tsf %d %d rate %d\n",
3426 le32_to_cpu(beacon->beacon_notify_hdr.status) & TX_STATUS_MSK,
3427 beacon->beacon_notify_hdr.failure_frame,
3428 le32_to_cpu(beacon->ibss_mgr_status),
3429 le32_to_cpu(beacon->high_tsf),
3430 le32_to_cpu(beacon->low_tsf), rate);
3431 #endif
3432
3433 if ((priv->iw_mode == IEEE80211_IF_TYPE_AP) &&
3434 (!test_bit(STATUS_EXIT_PENDING, &priv->status)))
3435 queue_work(priv->workqueue, &priv->beacon_update);
3436 }
3437
3438 /* Service response to REPLY_SCAN_CMD (0x80) */
3439 static void iwl3945_rx_reply_scan(struct iwl3945_priv *priv,
3440 struct iwl3945_rx_mem_buffer *rxb)
3441 {
3442 #ifdef CONFIG_IWL3945_DEBUG
3443 struct iwl3945_rx_packet *pkt = (void *)rxb->skb->data;
3444 struct iwl3945_scanreq_notification *notif =
3445 (struct iwl3945_scanreq_notification *)pkt->u.raw;
3446
3447 IWL_DEBUG_RX("Scan request status = 0x%x\n", notif->status);
3448 #endif
3449 }
3450
3451 /* Service SCAN_START_NOTIFICATION (0x82) */
3452 static void iwl3945_rx_scan_start_notif(struct iwl3945_priv *priv,
3453 struct iwl3945_rx_mem_buffer *rxb)
3454 {
3455 struct iwl3945_rx_packet *pkt = (void *)rxb->skb->data;
3456 struct iwl3945_scanstart_notification *notif =
3457 (struct iwl3945_scanstart_notification *)pkt->u.raw;
3458 priv->scan_start_tsf = le32_to_cpu(notif->tsf_low);
3459 IWL_DEBUG_SCAN("Scan start: "
3460 "%d [802.11%s] "
3461 "(TSF: 0x%08X:%08X) - %d (beacon timer %u)\n",
3462 notif->channel,
3463 notif->band ? "bg" : "a",
3464 notif->tsf_high,
3465 notif->tsf_low, notif->status, notif->beacon_timer);
3466 }
3467
3468 /* Service SCAN_RESULTS_NOTIFICATION (0x83) */
3469 static void iwl3945_rx_scan_results_notif(struct iwl3945_priv *priv,
3470 struct iwl3945_rx_mem_buffer *rxb)
3471 {
3472 struct iwl3945_rx_packet *pkt = (void *)rxb->skb->data;
3473 struct iwl3945_scanresults_notification *notif =
3474 (struct iwl3945_scanresults_notification *)pkt->u.raw;
3475
3476 IWL_DEBUG_SCAN("Scan ch.res: "
3477 "%d [802.11%s] "
3478 "(TSF: 0x%08X:%08X) - %d "
3479 "elapsed=%lu usec (%dms since last)\n",
3480 notif->channel,
3481 notif->band ? "bg" : "a",
3482 le32_to_cpu(notif->tsf_high),
3483 le32_to_cpu(notif->tsf_low),
3484 le32_to_cpu(notif->statistics[0]),
3485 le32_to_cpu(notif->tsf_low) - priv->scan_start_tsf,
3486 jiffies_to_msecs(elapsed_jiffies
3487 (priv->last_scan_jiffies, jiffies)));
3488
3489 priv->last_scan_jiffies = jiffies;
3490 priv->next_scan_jiffies = 0;
3491 }
3492
3493 /* Service SCAN_COMPLETE_NOTIFICATION (0x84) */
3494 static void iwl3945_rx_scan_complete_notif(struct iwl3945_priv *priv,
3495 struct iwl3945_rx_mem_buffer *rxb)
3496 {
3497 struct iwl3945_rx_packet *pkt = (void *)rxb->skb->data;
3498 struct iwl3945_scancomplete_notification *scan_notif = (void *)pkt->u.raw;
3499
3500 IWL_DEBUG_SCAN("Scan complete: %d channels (TSF 0x%08X:%08X) - %d\n",
3501 scan_notif->scanned_channels,
3502 scan_notif->tsf_low,
3503 scan_notif->tsf_high, scan_notif->status);
3504
3505 /* The HW is no longer scanning */
3506 clear_bit(STATUS_SCAN_HW, &priv->status);
3507
3508 /* The scan completion notification came in, so kill that timer... */
3509 cancel_delayed_work(&priv->scan_check);
3510
3511 IWL_DEBUG_INFO("Scan pass on %sGHz took %dms\n",
3512 (priv->scan_bands == 2) ? "2.4" : "5.2",
3513 jiffies_to_msecs(elapsed_jiffies
3514 (priv->scan_pass_start, jiffies)));
3515
3516 /* Remove this scanned band from the list
3517 * of pending bands to scan */
3518 priv->scan_bands--;
3519
3520 /* If a request to abort was given, or the scan did not succeed
3521 * then we reset the scan state machine and terminate,
3522 * re-queuing another scan if one has been requested */
3523 if (test_bit(STATUS_SCAN_ABORTING, &priv->status)) {
3524 IWL_DEBUG_INFO("Aborted scan completed.\n");
3525 clear_bit(STATUS_SCAN_ABORTING, &priv->status);
3526 } else {
3527 /* If there are more bands on this scan pass reschedule */
3528 if (priv->scan_bands > 0)
3529 goto reschedule;
3530 }
3531
3532 priv->last_scan_jiffies = jiffies;
3533 priv->next_scan_jiffies = 0;
3534 IWL_DEBUG_INFO("Setting scan to off\n");
3535
3536 clear_bit(STATUS_SCANNING, &priv->status);
3537
3538 IWL_DEBUG_INFO("Scan took %dms\n",
3539 jiffies_to_msecs(elapsed_jiffies(priv->scan_start, jiffies)));
3540
3541 queue_work(priv->workqueue, &priv->scan_completed);
3542
3543 return;
3544
3545 reschedule:
3546 priv->scan_pass_start = jiffies;
3547 queue_work(priv->workqueue, &priv->request_scan);
3548 }
3549
3550 /* Handle notification from uCode that card's power state is changing
3551 * due to software, hardware, or critical temperature RFKILL */
3552 static void iwl3945_rx_card_state_notif(struct iwl3945_priv *priv,
3553 struct iwl3945_rx_mem_buffer *rxb)
3554 {
3555 struct iwl3945_rx_packet *pkt = (void *)rxb->skb->data;
3556 u32 flags = le32_to_cpu(pkt->u.card_state_notif.flags);
3557 unsigned long status = priv->status;
3558
3559 IWL_DEBUG_RF_KILL("Card state received: HW:%s SW:%s\n",
3560 (flags & HW_CARD_DISABLED) ? "Kill" : "On",
3561 (flags & SW_CARD_DISABLED) ? "Kill" : "On");
3562
3563 iwl3945_write32(priv, CSR_UCODE_DRV_GP1_SET,
3564 CSR_UCODE_DRV_GP1_BIT_CMD_BLOCKED);
3565
3566 if (flags & HW_CARD_DISABLED)
3567 set_bit(STATUS_RF_KILL_HW, &priv->status);
3568 else
3569 clear_bit(STATUS_RF_KILL_HW, &priv->status);
3570
3571
3572 if (flags & SW_CARD_DISABLED)
3573 set_bit(STATUS_RF_KILL_SW, &priv->status);
3574 else
3575 clear_bit(STATUS_RF_KILL_SW, &priv->status);
3576
3577 iwl3945_scan_cancel(priv);
3578
3579 if ((test_bit(STATUS_RF_KILL_HW, &status) !=
3580 test_bit(STATUS_RF_KILL_HW, &priv->status)) ||
3581 (test_bit(STATUS_RF_KILL_SW, &status) !=
3582 test_bit(STATUS_RF_KILL_SW, &priv->status)))
3583 queue_work(priv->workqueue, &priv->rf_kill);
3584 else
3585 wake_up_interruptible(&priv->wait_command_queue);
3586 }
3587
3588 /**
3589 * iwl3945_setup_rx_handlers - Initialize Rx handler callbacks
3590 *
3591 * Setup the RX handlers for each of the reply types sent from the uCode
3592 * to the host.
3593 *
3594 * This function chains into the hardware specific files for them to setup
3595 * any hardware specific handlers as well.
3596 */
3597 static void iwl3945_setup_rx_handlers(struct iwl3945_priv *priv)
3598 {
3599 priv->rx_handlers[REPLY_ALIVE] = iwl3945_rx_reply_alive;
3600 priv->rx_handlers[REPLY_ADD_STA] = iwl3945_rx_reply_add_sta;
3601 priv->rx_handlers[REPLY_ERROR] = iwl3945_rx_reply_error;
3602 priv->rx_handlers[CHANNEL_SWITCH_NOTIFICATION] = iwl3945_rx_csa;
3603 priv->rx_handlers[SPECTRUM_MEASURE_NOTIFICATION] =
3604 iwl3945_rx_spectrum_measure_notif;
3605 priv->rx_handlers[PM_SLEEP_NOTIFICATION] = iwl3945_rx_pm_sleep_notif;
3606 priv->rx_handlers[PM_DEBUG_STATISTIC_NOTIFIC] =
3607 iwl3945_rx_pm_debug_statistics_notif;
3608 priv->rx_handlers[BEACON_NOTIFICATION] = iwl3945_rx_beacon_notif;
3609
3610 /*
3611 * The same handler is used for both the REPLY to a discrete
3612 * statistics request from the host as well as for the periodic
3613 * statistics notifications (after received beacons) from the uCode.
3614 */
3615 priv->rx_handlers[REPLY_STATISTICS_CMD] = iwl3945_hw_rx_statistics;
3616 priv->rx_handlers[STATISTICS_NOTIFICATION] = iwl3945_hw_rx_statistics;
3617
3618 priv->rx_handlers[REPLY_SCAN_CMD] = iwl3945_rx_reply_scan;
3619 priv->rx_handlers[SCAN_START_NOTIFICATION] = iwl3945_rx_scan_start_notif;
3620 priv->rx_handlers[SCAN_RESULTS_NOTIFICATION] =
3621 iwl3945_rx_scan_results_notif;
3622 priv->rx_handlers[SCAN_COMPLETE_NOTIFICATION] =
3623 iwl3945_rx_scan_complete_notif;
3624 priv->rx_handlers[CARD_STATE_NOTIFICATION] = iwl3945_rx_card_state_notif;
3625 priv->rx_handlers[REPLY_TX] = iwl3945_rx_reply_tx;
3626
3627 /* Set up hardware specific Rx handlers */
3628 iwl3945_hw_rx_handler_setup(priv);
3629 }
3630
3631 /**
3632 * iwl3945_tx_cmd_complete - Pull unused buffers off the queue and reclaim them
3633 * @rxb: Rx buffer to reclaim
3634 *
3635 * If an Rx buffer has an async callback associated with it the callback
3636 * will be executed. The attached skb (if present) will only be freed
3637 * if the callback returns 1
3638 */
3639 static void iwl3945_tx_cmd_complete(struct iwl3945_priv *priv,
3640 struct iwl3945_rx_mem_buffer *rxb)
3641 {
3642 struct iwl3945_rx_packet *pkt = (struct iwl3945_rx_packet *)rxb->skb->data;
3643 u16 sequence = le16_to_cpu(pkt->hdr.sequence);
3644 int txq_id = SEQ_TO_QUEUE(sequence);
3645 int index = SEQ_TO_INDEX(sequence);
3646 int huge = sequence & SEQ_HUGE_FRAME;
3647 int cmd_index;
3648 struct iwl3945_cmd *cmd;
3649
3650 /* If a Tx command is being handled and it isn't in the actual
3651 * command queue then there a command routing bug has been introduced
3652 * in the queue management code. */
3653 if (txq_id != IWL_CMD_QUEUE_NUM)
3654 IWL_ERROR("Error wrong command queue %d command id 0x%X\n",
3655 txq_id, pkt->hdr.cmd);
3656 BUG_ON(txq_id != IWL_CMD_QUEUE_NUM);
3657
3658 cmd_index = get_cmd_index(&priv->txq[IWL_CMD_QUEUE_NUM].q, index, huge);
3659 cmd = &priv->txq[IWL_CMD_QUEUE_NUM].cmd[cmd_index];
3660
3661 /* Input error checking is done when commands are added to queue. */
3662 if (cmd->meta.flags & CMD_WANT_SKB) {
3663 cmd->meta.source->u.skb = rxb->skb;
3664 rxb->skb = NULL;
3665 } else if (cmd->meta.u.callback &&
3666 !cmd->meta.u.callback(priv, cmd, rxb->skb))
3667 rxb->skb = NULL;
3668
3669 iwl3945_tx_queue_reclaim(priv, txq_id, index);
3670
3671 if (!(cmd->meta.flags & CMD_ASYNC)) {
3672 clear_bit(STATUS_HCMD_ACTIVE, &priv->status);
3673 wake_up_interruptible(&priv->wait_command_queue);
3674 }
3675 }
3676
3677 /************************** RX-FUNCTIONS ****************************/
3678 /*
3679 * Rx theory of operation
3680 *
3681 * The host allocates 32 DMA target addresses and passes the host address
3682 * to the firmware at register IWL_RFDS_TABLE_LOWER + N * RFD_SIZE where N is
3683 * 0 to 31
3684 *
3685 * Rx Queue Indexes
3686 * The host/firmware share two index registers for managing the Rx buffers.
3687 *
3688 * The READ index maps to the first position that the firmware may be writing
3689 * to -- the driver can read up to (but not including) this position and get
3690 * good data.
3691 * The READ index is managed by the firmware once the card is enabled.
3692 *
3693 * The WRITE index maps to the last position the driver has read from -- the
3694 * position preceding WRITE is the last slot the firmware can place a packet.
3695 *
3696 * The queue is empty (no good data) if WRITE = READ - 1, and is full if
3697 * WRITE = READ.
3698 *
3699 * During initialization, the host sets up the READ queue position to the first
3700 * INDEX position, and WRITE to the last (READ - 1 wrapped)
3701 *
3702 * When the firmware places a packet in a buffer, it will advance the READ index
3703 * and fire the RX interrupt. The driver can then query the READ index and
3704 * process as many packets as possible, moving the WRITE index forward as it
3705 * resets the Rx queue buffers with new memory.
3706 *
3707 * The management in the driver is as follows:
3708 * + A list of pre-allocated SKBs is stored in iwl->rxq->rx_free. When
3709 * iwl->rxq->free_count drops to or below RX_LOW_WATERMARK, work is scheduled
3710 * to replenish the iwl->rxq->rx_free.
3711 * + In iwl3945_rx_replenish (scheduled) if 'processed' != 'read' then the
3712 * iwl->rxq is replenished and the READ INDEX is updated (updating the
3713 * 'processed' and 'read' driver indexes as well)
3714 * + A received packet is processed and handed to the kernel network stack,
3715 * detached from the iwl->rxq. The driver 'processed' index is updated.
3716 * + The Host/Firmware iwl->rxq is replenished at tasklet time from the rx_free
3717 * list. If there are no allocated buffers in iwl->rxq->rx_free, the READ
3718 * INDEX is not incremented and iwl->status(RX_STALLED) is set. If there
3719 * were enough free buffers and RX_STALLED is set it is cleared.
3720 *
3721 *
3722 * Driver sequence:
3723 *
3724 * iwl3945_rx_queue_alloc() Allocates rx_free
3725 * iwl3945_rx_replenish() Replenishes rx_free list from rx_used, and calls
3726 * iwl3945_rx_queue_restock
3727 * iwl3945_rx_queue_restock() Moves available buffers from rx_free into Rx
3728 * queue, updates firmware pointers, and updates
3729 * the WRITE index. If insufficient rx_free buffers
3730 * are available, schedules iwl3945_rx_replenish
3731 *
3732 * -- enable interrupts --
3733 * ISR - iwl3945_rx() Detach iwl3945_rx_mem_buffers from pool up to the
3734 * READ INDEX, detaching the SKB from the pool.
3735 * Moves the packet buffer from queue to rx_used.
3736 * Calls iwl3945_rx_queue_restock to refill any empty
3737 * slots.
3738 * ...
3739 *
3740 */
3741
3742 /**
3743 * iwl3945_rx_queue_space - Return number of free slots available in queue.
3744 */
3745 static int iwl3945_rx_queue_space(const struct iwl3945_rx_queue *q)
3746 {
3747 int s = q->read - q->write;
3748 if (s <= 0)
3749 s += RX_QUEUE_SIZE;
3750 /* keep some buffer to not confuse full and empty queue */
3751 s -= 2;
3752 if (s < 0)
3753 s = 0;
3754 return s;
3755 }
3756
3757 /**
3758 * iwl3945_rx_queue_update_write_ptr - Update the write pointer for the RX queue
3759 */
3760 int iwl3945_rx_queue_update_write_ptr(struct iwl3945_priv *priv, struct iwl3945_rx_queue *q)
3761 {
3762 u32 reg = 0;
3763 int rc = 0;
3764 unsigned long flags;
3765
3766 spin_lock_irqsave(&q->lock, flags);
3767
3768 if (q->need_update == 0)
3769 goto exit_unlock;
3770
3771 /* If power-saving is in use, make sure device is awake */
3772 if (test_bit(STATUS_POWER_PMI, &priv->status)) {
3773 reg = iwl3945_read32(priv, CSR_UCODE_DRV_GP1);
3774
3775 if (reg & CSR_UCODE_DRV_GP1_BIT_MAC_SLEEP) {
3776 iwl3945_set_bit(priv, CSR_GP_CNTRL,
3777 CSR_GP_CNTRL_REG_FLAG_MAC_ACCESS_REQ);
3778 goto exit_unlock;
3779 }
3780
3781 rc = iwl3945_grab_nic_access(priv);
3782 if (rc)
3783 goto exit_unlock;
3784
3785 /* Device expects a multiple of 8 */
3786 iwl3945_write_direct32(priv, FH_RSCSR_CHNL0_WPTR,
3787 q->write & ~0x7);
3788 iwl3945_release_nic_access(priv);
3789
3790 /* Else device is assumed to be awake */
3791 } else
3792 /* Device expects a multiple of 8 */
3793 iwl3945_write32(priv, FH_RSCSR_CHNL0_WPTR, q->write & ~0x7);
3794
3795
3796 q->need_update = 0;
3797
3798 exit_unlock:
3799 spin_unlock_irqrestore(&q->lock, flags);
3800 return rc;
3801 }
3802
3803 /**
3804 * iwl3945_dma_addr2rbd_ptr - convert a DMA address to a uCode read buffer ptr
3805 */
3806 static inline __le32 iwl3945_dma_addr2rbd_ptr(struct iwl3945_priv *priv,
3807 dma_addr_t dma_addr)
3808 {
3809 return cpu_to_le32((u32)dma_addr);
3810 }
3811
3812 /**
3813 * iwl3945_rx_queue_restock - refill RX queue from pre-allocated pool
3814 *
3815 * If there are slots in the RX queue that need to be restocked,
3816 * and we have free pre-allocated buffers, fill the ranks as much
3817 * as we can, pulling from rx_free.
3818 *
3819 * This moves the 'write' index forward to catch up with 'processed', and
3820 * also updates the memory address in the firmware to reference the new
3821 * target buffer.
3822 */
3823 static int iwl3945_rx_queue_restock(struct iwl3945_priv *priv)
3824 {
3825 struct iwl3945_rx_queue *rxq = &priv->rxq;
3826 struct list_head *element;
3827 struct iwl3945_rx_mem_buffer *rxb;
3828 unsigned long flags;
3829 int write, rc;
3830
3831 spin_lock_irqsave(&rxq->lock, flags);
3832 write = rxq->write & ~0x7;
3833 while ((iwl3945_rx_queue_space(rxq) > 0) && (rxq->free_count)) {
3834 /* Get next free Rx buffer, remove from free list */
3835 element = rxq->rx_free.next;
3836 rxb = list_entry(element, struct iwl3945_rx_mem_buffer, list);
3837 list_del(element);
3838
3839 /* Point to Rx buffer via next RBD in circular buffer */
3840 rxq->bd[rxq->write] = iwl3945_dma_addr2rbd_ptr(priv, rxb->dma_addr);
3841 rxq->queue[rxq->write] = rxb;
3842 rxq->write = (rxq->write + 1) & RX_QUEUE_MASK;
3843 rxq->free_count--;
3844 }
3845 spin_unlock_irqrestore(&rxq->lock, flags);
3846 /* If the pre-allocated buffer pool is dropping low, schedule to
3847 * refill it */
3848 if (rxq->free_count <= RX_LOW_WATERMARK)
3849 queue_work(priv->workqueue, &priv->rx_replenish);
3850
3851
3852 /* If we've added more space for the firmware to place data, tell it.
3853 * Increment device's write pointer in multiples of 8. */
3854 if ((write != (rxq->write & ~0x7))
3855 || (abs(rxq->write - rxq->read) > 7)) {
3856 spin_lock_irqsave(&rxq->lock, flags);
3857 rxq->need_update = 1;
3858 spin_unlock_irqrestore(&rxq->lock, flags);
3859 rc = iwl3945_rx_queue_update_write_ptr(priv, rxq);
3860 if (rc)
3861 return rc;
3862 }
3863
3864 return 0;
3865 }
3866
3867 /**
3868 * iwl3945_rx_replenish - Move all used packet from rx_used to rx_free
3869 *
3870 * When moving to rx_free an SKB is allocated for the slot.
3871 *
3872 * Also restock the Rx queue via iwl3945_rx_queue_restock.
3873 * This is called as a scheduled work item (except for during initialization)
3874 */
3875 static void iwl3945_rx_allocate(struct iwl3945_priv *priv)
3876 {
3877 struct iwl3945_rx_queue *rxq = &priv->rxq;
3878 struct list_head *element;
3879 struct iwl3945_rx_mem_buffer *rxb;
3880 unsigned long flags;
3881 spin_lock_irqsave(&rxq->lock, flags);
3882 while (!list_empty(&rxq->rx_used)) {
3883 element = rxq->rx_used.next;
3884 rxb = list_entry(element, struct iwl3945_rx_mem_buffer, list);
3885
3886 /* Alloc a new receive buffer */
3887 rxb->skb =
3888 alloc_skb(IWL_RX_BUF_SIZE, __GFP_NOWARN | GFP_ATOMIC);
3889 if (!rxb->skb) {
3890 if (net_ratelimit())
3891 printk(KERN_CRIT DRV_NAME
3892 ": Can not allocate SKB buffers\n");
3893 /* We don't reschedule replenish work here -- we will
3894 * call the restock method and if it still needs
3895 * more buffers it will schedule replenish */
3896 break;
3897 }
3898
3899 /* If radiotap head is required, reserve some headroom here.
3900 * The physical head count is a variable rx_stats->phy_count.
3901 * We reserve 4 bytes here. Plus these extra bytes, the
3902 * headroom of the physical head should be enough for the
3903 * radiotap head that iwl3945 supported. See iwl3945_rt.
3904 */
3905 skb_reserve(rxb->skb, 4);
3906
3907 priv->alloc_rxb_skb++;
3908 list_del(element);
3909
3910 /* Get physical address of RB/SKB */
3911 rxb->dma_addr =
3912 pci_map_single(priv->pci_dev, rxb->skb->data,
3913 IWL_RX_BUF_SIZE, PCI_DMA_FROMDEVICE);
3914 list_add_tail(&rxb->list, &rxq->rx_free);
3915 rxq->free_count++;
3916 }
3917 spin_unlock_irqrestore(&rxq->lock, flags);
3918 }
3919
3920 /*
3921 * this should be called while priv->lock is locked
3922 */
3923 static void __iwl3945_rx_replenish(void *data)
3924 {
3925 struct iwl3945_priv *priv = data;
3926
3927 iwl3945_rx_allocate(priv);
3928 iwl3945_rx_queue_restock(priv);
3929 }
3930
3931
3932 void iwl3945_rx_replenish(void *data)
3933 {
3934 struct iwl3945_priv *priv = data;
3935 unsigned long flags;
3936
3937 iwl3945_rx_allocate(priv);
3938
3939 spin_lock_irqsave(&priv->lock, flags);
3940 iwl3945_rx_queue_restock(priv);
3941 spin_unlock_irqrestore(&priv->lock, flags);
3942 }
3943
3944 /* Assumes that the skb field of the buffers in 'pool' is kept accurate.
3945 * If an SKB has been detached, the POOL needs to have its SKB set to NULL
3946 * This free routine walks the list of POOL entries and if SKB is set to
3947 * non NULL it is unmapped and freed
3948 */
3949 static void iwl3945_rx_queue_free(struct iwl3945_priv *priv, struct iwl3945_rx_queue *rxq)
3950 {
3951 int i;
3952 for (i = 0; i < RX_QUEUE_SIZE + RX_FREE_BUFFERS; i++) {
3953 if (rxq->pool[i].skb != NULL) {
3954 pci_unmap_single(priv->pci_dev,
3955 rxq->pool[i].dma_addr,
3956 IWL_RX_BUF_SIZE, PCI_DMA_FROMDEVICE);
3957 dev_kfree_skb(rxq->pool[i].skb);
3958 }
3959 }
3960
3961 pci_free_consistent(priv->pci_dev, 4 * RX_QUEUE_SIZE, rxq->bd,
3962 rxq->dma_addr);
3963 rxq->bd = NULL;
3964 }
3965
3966 int iwl3945_rx_queue_alloc(struct iwl3945_priv *priv)
3967 {
3968 struct iwl3945_rx_queue *rxq = &priv->rxq;
3969 struct pci_dev *dev = priv->pci_dev;
3970 int i;
3971
3972 spin_lock_init(&rxq->lock);
3973 INIT_LIST_HEAD(&rxq->rx_free);
3974 INIT_LIST_HEAD(&rxq->rx_used);
3975
3976 /* Alloc the circular buffer of Read Buffer Descriptors (RBDs) */
3977 rxq->bd = pci_alloc_consistent(dev, 4 * RX_QUEUE_SIZE, &rxq->dma_addr);
3978 if (!rxq->bd)
3979 return -ENOMEM;
3980
3981 /* Fill the rx_used queue with _all_ of the Rx buffers */
3982 for (i = 0; i < RX_FREE_BUFFERS + RX_QUEUE_SIZE; i++)
3983 list_add_tail(&rxq->pool[i].list, &rxq->rx_used);
3984
3985 /* Set us so that we have processed and used all buffers, but have
3986 * not restocked the Rx queue with fresh buffers */
3987 rxq->read = rxq->write = 0;
3988 rxq->free_count = 0;
3989 rxq->need_update = 0;
3990 return 0;
3991 }
3992
3993 void iwl3945_rx_queue_reset(struct iwl3945_priv *priv, struct iwl3945_rx_queue *rxq)
3994 {
3995 unsigned long flags;
3996 int i;
3997 spin_lock_irqsave(&rxq->lock, flags);
3998 INIT_LIST_HEAD(&rxq->rx_free);
3999 INIT_LIST_HEAD(&rxq->rx_used);
4000 /* Fill the rx_used queue with _all_ of the Rx buffers */
4001 for (i = 0; i < RX_FREE_BUFFERS + RX_QUEUE_SIZE; i++) {
4002 /* In the reset function, these buffers may have been allocated
4003 * to an SKB, so we need to unmap and free potential storage */
4004 if (rxq->pool[i].skb != NULL) {
4005 pci_unmap_single(priv->pci_dev,
4006 rxq->pool[i].dma_addr,
4007 IWL_RX_BUF_SIZE, PCI_DMA_FROMDEVICE);
4008 priv->alloc_rxb_skb--;
4009 dev_kfree_skb(rxq->pool[i].skb);
4010 rxq->pool[i].skb = NULL;
4011 }
4012 list_add_tail(&rxq->pool[i].list, &rxq->rx_used);
4013 }
4014
4015 /* Set us so that we have processed and used all buffers, but have
4016 * not restocked the Rx queue with fresh buffers */
4017 rxq->read = rxq->write = 0;
4018 rxq->free_count = 0;
4019 spin_unlock_irqrestore(&rxq->lock, flags);
4020 }
4021
4022 /* Convert linear signal-to-noise ratio into dB */
4023 static u8 ratio2dB[100] = {
4024 /* 0 1 2 3 4 5 6 7 8 9 */
4025 0, 0, 6, 10, 12, 14, 16, 17, 18, 19, /* 00 - 09 */
4026 20, 21, 22, 22, 23, 23, 24, 25, 26, 26, /* 10 - 19 */
4027 26, 26, 26, 27, 27, 28, 28, 28, 29, 29, /* 20 - 29 */
4028 29, 30, 30, 30, 31, 31, 31, 31, 32, 32, /* 30 - 39 */
4029 32, 32, 32, 33, 33, 33, 33, 33, 34, 34, /* 40 - 49 */
4030 34, 34, 34, 34, 35, 35, 35, 35, 35, 35, /* 50 - 59 */
4031 36, 36, 36, 36, 36, 36, 36, 37, 37, 37, /* 60 - 69 */
4032 37, 37, 37, 37, 37, 38, 38, 38, 38, 38, /* 70 - 79 */
4033 38, 38, 38, 38, 38, 39, 39, 39, 39, 39, /* 80 - 89 */
4034 39, 39, 39, 39, 39, 40, 40, 40, 40, 40 /* 90 - 99 */
4035 };
4036
4037 /* Calculates a relative dB value from a ratio of linear
4038 * (i.e. not dB) signal levels.
4039 * Conversion assumes that levels are voltages (20*log), not powers (10*log). */
4040 int iwl3945_calc_db_from_ratio(int sig_ratio)
4041 {
4042 /* 1000:1 or higher just report as 60 dB */
4043 if (sig_ratio >= 1000)
4044 return 60;
4045
4046 /* 100:1 or higher, divide by 10 and use table,
4047 * add 20 dB to make up for divide by 10 */
4048 if (sig_ratio >= 100)
4049 return (20 + (int)ratio2dB[sig_ratio/10]);
4050
4051 /* We shouldn't see this */
4052 if (sig_ratio < 1)
4053 return 0;
4054
4055 /* Use table for ratios 1:1 - 99:1 */
4056 return (int)ratio2dB[sig_ratio];
4057 }
4058
4059 #define PERFECT_RSSI (-20) /* dBm */
4060 #define WORST_RSSI (-95) /* dBm */
4061 #define RSSI_RANGE (PERFECT_RSSI - WORST_RSSI)
4062
4063 /* Calculate an indication of rx signal quality (a percentage, not dBm!).
4064 * See http://www.ces.clemson.edu/linux/signal_quality.shtml for info
4065 * about formulas used below. */
4066 int iwl3945_calc_sig_qual(int rssi_dbm, int noise_dbm)
4067 {
4068 int sig_qual;
4069 int degradation = PERFECT_RSSI - rssi_dbm;
4070
4071 /* If we get a noise measurement, use signal-to-noise ratio (SNR)
4072 * as indicator; formula is (signal dbm - noise dbm).
4073 * SNR at or above 40 is a great signal (100%).
4074 * Below that, scale to fit SNR of 0 - 40 dB within 0 - 100% indicator.
4075 * Weakest usable signal is usually 10 - 15 dB SNR. */
4076 if (noise_dbm) {
4077 if (rssi_dbm - noise_dbm >= 40)
4078 return 100;
4079 else if (rssi_dbm < noise_dbm)
4080 return 0;
4081 sig_qual = ((rssi_dbm - noise_dbm) * 5) / 2;
4082
4083 /* Else use just the signal level.
4084 * This formula is a least squares fit of data points collected and
4085 * compared with a reference system that had a percentage (%) display
4086 * for signal quality. */
4087 } else
4088 sig_qual = (100 * (RSSI_RANGE * RSSI_RANGE) - degradation *
4089 (15 * RSSI_RANGE + 62 * degradation)) /
4090 (RSSI_RANGE * RSSI_RANGE);
4091
4092 if (sig_qual > 100)
4093 sig_qual = 100;
4094 else if (sig_qual < 1)
4095 sig_qual = 0;
4096
4097 return sig_qual;
4098 }
4099
4100 /**
4101 * iwl3945_rx_handle - Main entry function for receiving responses from uCode
4102 *
4103 * Uses the priv->rx_handlers callback function array to invoke
4104 * the appropriate handlers, including command responses,
4105 * frame-received notifications, and other notifications.
4106 */
4107 static void iwl3945_rx_handle(struct iwl3945_priv *priv)
4108 {
4109 struct iwl3945_rx_mem_buffer *rxb;
4110 struct iwl3945_rx_packet *pkt;
4111 struct iwl3945_rx_queue *rxq = &priv->rxq;
4112 u32 r, i;
4113 int reclaim;
4114 unsigned long flags;
4115 u8 fill_rx = 0;
4116 u32 count = 8;
4117
4118 /* uCode's read index (stored in shared DRAM) indicates the last Rx
4119 * buffer that the driver may process (last buffer filled by ucode). */
4120 r = iwl3945_hw_get_rx_read(priv);
4121 i = rxq->read;
4122
4123 if (iwl3945_rx_queue_space(rxq) > (RX_QUEUE_SIZE / 2))
4124 fill_rx = 1;
4125 /* Rx interrupt, but nothing sent from uCode */
4126 if (i == r)
4127 IWL_DEBUG(IWL_DL_RX | IWL_DL_ISR, "r = %d, i = %d\n", r, i);
4128
4129 while (i != r) {
4130 rxb = rxq->queue[i];
4131
4132 /* If an RXB doesn't have a Rx queue slot associated with it,
4133 * then a bug has been introduced in the queue refilling
4134 * routines -- catch it here */
4135 BUG_ON(rxb == NULL);
4136
4137 rxq->queue[i] = NULL;
4138
4139 pci_dma_sync_single_for_cpu(priv->pci_dev, rxb->dma_addr,
4140 IWL_RX_BUF_SIZE,
4141 PCI_DMA_FROMDEVICE);
4142 pkt = (struct iwl3945_rx_packet *)rxb->skb->data;
4143
4144 /* Reclaim a command buffer only if this packet is a response
4145 * to a (driver-originated) command.
4146 * If the packet (e.g. Rx frame) originated from uCode,
4147 * there is no command buffer to reclaim.
4148 * Ucode should set SEQ_RX_FRAME bit if ucode-originated,
4149 * but apparently a few don't get set; catch them here. */
4150 reclaim = !(pkt->hdr.sequence & SEQ_RX_FRAME) &&
4151 (pkt->hdr.cmd != STATISTICS_NOTIFICATION) &&
4152 (pkt->hdr.cmd != REPLY_TX);
4153
4154 /* Based on type of command response or notification,
4155 * handle those that need handling via function in
4156 * rx_handlers table. See iwl3945_setup_rx_handlers() */
4157 if (priv->rx_handlers[pkt->hdr.cmd]) {
4158 IWL_DEBUG(IWL_DL_HOST_COMMAND | IWL_DL_RX | IWL_DL_ISR,
4159 "r = %d, i = %d, %s, 0x%02x\n", r, i,
4160 get_cmd_string(pkt->hdr.cmd), pkt->hdr.cmd);
4161 priv->rx_handlers[pkt->hdr.cmd] (priv, rxb);
4162 } else {
4163 /* No handling needed */
4164 IWL_DEBUG(IWL_DL_HOST_COMMAND | IWL_DL_RX | IWL_DL_ISR,
4165 "r %d i %d No handler needed for %s, 0x%02x\n",
4166 r, i, get_cmd_string(pkt->hdr.cmd),
4167 pkt->hdr.cmd);
4168 }
4169
4170 if (reclaim) {
4171 /* Invoke any callbacks, transfer the skb to caller, and
4172 * fire off the (possibly) blocking iwl3945_send_cmd()
4173 * as we reclaim the driver command queue */
4174 if (rxb && rxb->skb)
4175 iwl3945_tx_cmd_complete(priv, rxb);
4176 else
4177 IWL_WARNING("Claim null rxb?\n");
4178 }
4179
4180 /* For now we just don't re-use anything. We can tweak this
4181 * later to try and re-use notification packets and SKBs that
4182 * fail to Rx correctly */
4183 if (rxb->skb != NULL) {
4184 priv->alloc_rxb_skb--;
4185 dev_kfree_skb_any(rxb->skb);
4186 rxb->skb = NULL;
4187 }
4188
4189 pci_unmap_single(priv->pci_dev, rxb->dma_addr,
4190 IWL_RX_BUF_SIZE, PCI_DMA_FROMDEVICE);
4191 spin_lock_irqsave(&rxq->lock, flags);
4192 list_add_tail(&rxb->list, &priv->rxq.rx_used);
4193 spin_unlock_irqrestore(&rxq->lock, flags);
4194 i = (i + 1) & RX_QUEUE_MASK;
4195 /* If there are a lot of unused frames,
4196 * restock the Rx queue so ucode won't assert. */
4197 if (fill_rx) {
4198 count++;
4199 if (count >= 8) {
4200 priv->rxq.read = i;
4201 __iwl3945_rx_replenish(priv);
4202 count = 0;
4203 }
4204 }
4205 }
4206
4207 /* Backtrack one entry */
4208 priv->rxq.read = i;
4209 iwl3945_rx_queue_restock(priv);
4210 }
4211
4212 /**
4213 * iwl3945_tx_queue_update_write_ptr - Send new write index to hardware
4214 */
4215 static int iwl3945_tx_queue_update_write_ptr(struct iwl3945_priv *priv,
4216 struct iwl3945_tx_queue *txq)
4217 {
4218 u32 reg = 0;
4219 int rc = 0;
4220 int txq_id = txq->q.id;
4221
4222 if (txq->need_update == 0)
4223 return rc;
4224
4225 /* if we're trying to save power */
4226 if (test_bit(STATUS_POWER_PMI, &priv->status)) {
4227 /* wake up nic if it's powered down ...
4228 * uCode will wake up, and interrupt us again, so next
4229 * time we'll skip this part. */
4230 reg = iwl3945_read32(priv, CSR_UCODE_DRV_GP1);
4231
4232 if (reg & CSR_UCODE_DRV_GP1_BIT_MAC_SLEEP) {
4233 IWL_DEBUG_INFO("Requesting wakeup, GP1 = 0x%x\n", reg);
4234 iwl3945_set_bit(priv, CSR_GP_CNTRL,
4235 CSR_GP_CNTRL_REG_FLAG_MAC_ACCESS_REQ);
4236 return rc;
4237 }
4238
4239 /* restore this queue's parameters in nic hardware. */
4240 rc = iwl3945_grab_nic_access(priv);
4241 if (rc)
4242 return rc;
4243 iwl3945_write_direct32(priv, HBUS_TARG_WRPTR,
4244 txq->q.write_ptr | (txq_id << 8));
4245 iwl3945_release_nic_access(priv);
4246
4247 /* else not in power-save mode, uCode will never sleep when we're
4248 * trying to tx (during RFKILL, we're not trying to tx). */
4249 } else
4250 iwl3945_write32(priv, HBUS_TARG_WRPTR,
4251 txq->q.write_ptr | (txq_id << 8));
4252
4253 txq->need_update = 0;
4254
4255 return rc;
4256 }
4257
4258 #ifdef CONFIG_IWL3945_DEBUG
4259 static void iwl3945_print_rx_config_cmd(struct iwl3945_rxon_cmd *rxon)
4260 {
4261 DECLARE_MAC_BUF(mac);
4262
4263 IWL_DEBUG_RADIO("RX CONFIG:\n");
4264 iwl3945_print_hex_dump(IWL_DL_RADIO, (u8 *) rxon, sizeof(*rxon));
4265 IWL_DEBUG_RADIO("u16 channel: 0x%x\n", le16_to_cpu(rxon->channel));
4266 IWL_DEBUG_RADIO("u32 flags: 0x%08X\n", le32_to_cpu(rxon->flags));
4267 IWL_DEBUG_RADIO("u32 filter_flags: 0x%08x\n",
4268 le32_to_cpu(rxon->filter_flags));
4269 IWL_DEBUG_RADIO("u8 dev_type: 0x%x\n", rxon->dev_type);
4270 IWL_DEBUG_RADIO("u8 ofdm_basic_rates: 0x%02x\n",
4271 rxon->ofdm_basic_rates);
4272 IWL_DEBUG_RADIO("u8 cck_basic_rates: 0x%02x\n", rxon->cck_basic_rates);
4273 IWL_DEBUG_RADIO("u8[6] node_addr: %s\n",
4274 print_mac(mac, rxon->node_addr));
4275 IWL_DEBUG_RADIO("u8[6] bssid_addr: %s\n",
4276 print_mac(mac, rxon->bssid_addr));
4277 IWL_DEBUG_RADIO("u16 assoc_id: 0x%x\n", le16_to_cpu(rxon->assoc_id));
4278 }
4279 #endif
4280
4281 static void iwl3945_enable_interrupts(struct iwl3945_priv *priv)
4282 {
4283 IWL_DEBUG_ISR("Enabling interrupts\n");
4284 set_bit(STATUS_INT_ENABLED, &priv->status);
4285 iwl3945_write32(priv, CSR_INT_MASK, CSR_INI_SET_MASK);
4286 }
4287
4288 static inline void iwl3945_disable_interrupts(struct iwl3945_priv *priv)
4289 {
4290 clear_bit(STATUS_INT_ENABLED, &priv->status);
4291
4292 /* disable interrupts from uCode/NIC to host */
4293 iwl3945_write32(priv, CSR_INT_MASK, 0x00000000);
4294
4295 /* acknowledge/clear/reset any interrupts still pending
4296 * from uCode or flow handler (Rx/Tx DMA) */
4297 iwl3945_write32(priv, CSR_INT, 0xffffffff);
4298 iwl3945_write32(priv, CSR_FH_INT_STATUS, 0xffffffff);
4299 IWL_DEBUG_ISR("Disabled interrupts\n");
4300 }
4301
4302 static const char *desc_lookup(int i)
4303 {
4304 switch (i) {
4305 case 1:
4306 return "FAIL";
4307 case 2:
4308 return "BAD_PARAM";
4309 case 3:
4310 return "BAD_CHECKSUM";
4311 case 4:
4312 return "NMI_INTERRUPT";
4313 case 5:
4314 return "SYSASSERT";
4315 case 6:
4316 return "FATAL_ERROR";
4317 }
4318
4319 return "UNKNOWN";
4320 }
4321
4322 #define ERROR_START_OFFSET (1 * sizeof(u32))
4323 #define ERROR_ELEM_SIZE (7 * sizeof(u32))
4324
4325 static void iwl3945_dump_nic_error_log(struct iwl3945_priv *priv)
4326 {
4327 u32 i;
4328 u32 desc, time, count, base, data1;
4329 u32 blink1, blink2, ilink1, ilink2;
4330 int rc;
4331
4332 base = le32_to_cpu(priv->card_alive.error_event_table_ptr);
4333
4334 if (!iwl3945_hw_valid_rtc_data_addr(base)) {
4335 IWL_ERROR("Not valid error log pointer 0x%08X\n", base);
4336 return;
4337 }
4338
4339 rc = iwl3945_grab_nic_access(priv);
4340 if (rc) {
4341 IWL_WARNING("Can not read from adapter at this time.\n");
4342 return;
4343 }
4344
4345 count = iwl3945_read_targ_mem(priv, base);
4346
4347 if (ERROR_START_OFFSET <= count * ERROR_ELEM_SIZE) {
4348 IWL_ERROR("Start IWL Error Log Dump:\n");
4349 IWL_ERROR("Status: 0x%08lX, count: %d\n", priv->status, count);
4350 }
4351
4352 IWL_ERROR("Desc Time asrtPC blink2 "
4353 "ilink1 nmiPC Line\n");
4354 for (i = ERROR_START_OFFSET;
4355 i < (count * ERROR_ELEM_SIZE) + ERROR_START_OFFSET;
4356 i += ERROR_ELEM_SIZE) {
4357 desc = iwl3945_read_targ_mem(priv, base + i);
4358 time =
4359 iwl3945_read_targ_mem(priv, base + i + 1 * sizeof(u32));
4360 blink1 =
4361 iwl3945_read_targ_mem(priv, base + i + 2 * sizeof(u32));
4362 blink2 =
4363 iwl3945_read_targ_mem(priv, base + i + 3 * sizeof(u32));
4364 ilink1 =
4365 iwl3945_read_targ_mem(priv, base + i + 4 * sizeof(u32));
4366 ilink2 =
4367 iwl3945_read_targ_mem(priv, base + i + 5 * sizeof(u32));
4368 data1 =
4369 iwl3945_read_targ_mem(priv, base + i + 6 * sizeof(u32));
4370
4371 IWL_ERROR
4372 ("%-13s (#%d) %010u 0x%05X 0x%05X 0x%05X 0x%05X %u\n\n",
4373 desc_lookup(desc), desc, time, blink1, blink2,
4374 ilink1, ilink2, data1);
4375 }
4376
4377 iwl3945_release_nic_access(priv);
4378
4379 }
4380
4381 #define EVENT_START_OFFSET (6 * sizeof(u32))
4382
4383 /**
4384 * iwl3945_print_event_log - Dump error event log to syslog
4385 *
4386 * NOTE: Must be called with iwl3945_grab_nic_access() already obtained!
4387 */
4388 static void iwl3945_print_event_log(struct iwl3945_priv *priv, u32 start_idx,
4389 u32 num_events, u32 mode)
4390 {
4391 u32 i;
4392 u32 base; /* SRAM byte address of event log header */
4393 u32 event_size; /* 2 u32s, or 3 u32s if timestamp recorded */
4394 u32 ptr; /* SRAM byte address of log data */
4395 u32 ev, time, data; /* event log data */
4396
4397 if (num_events == 0)
4398 return;
4399
4400 base = le32_to_cpu(priv->card_alive.log_event_table_ptr);
4401
4402 if (mode == 0)
4403 event_size = 2 * sizeof(u32);
4404 else
4405 event_size = 3 * sizeof(u32);
4406
4407 ptr = base + EVENT_START_OFFSET + (start_idx * event_size);
4408
4409 /* "time" is actually "data" for mode 0 (no timestamp).
4410 * place event id # at far right for easier visual parsing. */
4411 for (i = 0; i < num_events; i++) {
4412 ev = iwl3945_read_targ_mem(priv, ptr);
4413 ptr += sizeof(u32);
4414 time = iwl3945_read_targ_mem(priv, ptr);
4415 ptr += sizeof(u32);
4416 if (mode == 0)
4417 IWL_ERROR("0x%08x\t%04u\n", time, ev); /* data, ev */
4418 else {
4419 data = iwl3945_read_targ_mem(priv, ptr);
4420 ptr += sizeof(u32);
4421 IWL_ERROR("%010u\t0x%08x\t%04u\n", time, data, ev);
4422 }
4423 }
4424 }
4425
4426 static void iwl3945_dump_nic_event_log(struct iwl3945_priv *priv)
4427 {
4428 int rc;
4429 u32 base; /* SRAM byte address of event log header */
4430 u32 capacity; /* event log capacity in # entries */
4431 u32 mode; /* 0 - no timestamp, 1 - timestamp recorded */
4432 u32 num_wraps; /* # times uCode wrapped to top of log */
4433 u32 next_entry; /* index of next entry to be written by uCode */
4434 u32 size; /* # entries that we'll print */
4435
4436 base = le32_to_cpu(priv->card_alive.log_event_table_ptr);
4437 if (!iwl3945_hw_valid_rtc_data_addr(base)) {
4438 IWL_ERROR("Invalid event log pointer 0x%08X\n", base);
4439 return;
4440 }
4441
4442 rc = iwl3945_grab_nic_access(priv);
4443 if (rc) {
4444 IWL_WARNING("Can not read from adapter at this time.\n");
4445 return;
4446 }
4447
4448 /* event log header */
4449 capacity = iwl3945_read_targ_mem(priv, base);
4450 mode = iwl3945_read_targ_mem(priv, base + (1 * sizeof(u32)));
4451 num_wraps = iwl3945_read_targ_mem(priv, base + (2 * sizeof(u32)));
4452 next_entry = iwl3945_read_targ_mem(priv, base + (3 * sizeof(u32)));
4453
4454 size = num_wraps ? capacity : next_entry;
4455
4456 /* bail out if nothing in log */
4457 if (size == 0) {
4458 IWL_ERROR("Start IWL Event Log Dump: nothing in log\n");
4459 iwl3945_release_nic_access(priv);
4460 return;
4461 }
4462
4463 IWL_ERROR("Start IWL Event Log Dump: display count %d, wraps %d\n",
4464 size, num_wraps);
4465
4466 /* if uCode has wrapped back to top of log, start at the oldest entry,
4467 * i.e the next one that uCode would fill. */
4468 if (num_wraps)
4469 iwl3945_print_event_log(priv, next_entry,
4470 capacity - next_entry, mode);
4471
4472 /* (then/else) start at top of log */
4473 iwl3945_print_event_log(priv, 0, next_entry, mode);
4474
4475 iwl3945_release_nic_access(priv);
4476 }
4477
4478 /**
4479 * iwl3945_irq_handle_error - called for HW or SW error interrupt from card
4480 */
4481 static void iwl3945_irq_handle_error(struct iwl3945_priv *priv)
4482 {
4483 /* Set the FW error flag -- cleared on iwl3945_down */
4484 set_bit(STATUS_FW_ERROR, &priv->status);
4485
4486 /* Cancel currently queued command. */
4487 clear_bit(STATUS_HCMD_ACTIVE, &priv->status);
4488
4489 #ifdef CONFIG_IWL3945_DEBUG
4490 if (iwl3945_debug_level & IWL_DL_FW_ERRORS) {
4491 iwl3945_dump_nic_error_log(priv);
4492 iwl3945_dump_nic_event_log(priv);
4493 iwl3945_print_rx_config_cmd(&priv->staging_rxon);
4494 }
4495 #endif
4496
4497 wake_up_interruptible(&priv->wait_command_queue);
4498
4499 /* Keep the restart process from trying to send host
4500 * commands by clearing the INIT status bit */
4501 clear_bit(STATUS_READY, &priv->status);
4502
4503 if (!test_bit(STATUS_EXIT_PENDING, &priv->status)) {
4504 IWL_DEBUG(IWL_DL_INFO | IWL_DL_FW_ERRORS,
4505 "Restarting adapter due to uCode error.\n");
4506
4507 if (iwl3945_is_associated(priv)) {
4508 memcpy(&priv->recovery_rxon, &priv->active_rxon,
4509 sizeof(priv->recovery_rxon));
4510 priv->error_recovering = 1;
4511 }
4512 queue_work(priv->workqueue, &priv->restart);
4513 }
4514 }
4515
4516 static void iwl3945_error_recovery(struct iwl3945_priv *priv)
4517 {
4518 unsigned long flags;
4519
4520 memcpy(&priv->staging_rxon, &priv->recovery_rxon,
4521 sizeof(priv->staging_rxon));
4522 priv->staging_rxon.filter_flags &= ~RXON_FILTER_ASSOC_MSK;
4523 iwl3945_commit_rxon(priv);
4524
4525 iwl3945_add_station(priv, priv->bssid, 1, 0);
4526
4527 spin_lock_irqsave(&priv->lock, flags);
4528 priv->assoc_id = le16_to_cpu(priv->staging_rxon.assoc_id);
4529 priv->error_recovering = 0;
4530 spin_unlock_irqrestore(&priv->lock, flags);
4531 }
4532
4533 static void iwl3945_irq_tasklet(struct iwl3945_priv *priv)
4534 {
4535 u32 inta, handled = 0;
4536 u32 inta_fh;
4537 unsigned long flags;
4538 #ifdef CONFIG_IWL3945_DEBUG
4539 u32 inta_mask;
4540 #endif
4541
4542 spin_lock_irqsave(&priv->lock, flags);
4543
4544 /* Ack/clear/reset pending uCode interrupts.
4545 * Note: Some bits in CSR_INT are "OR" of bits in CSR_FH_INT_STATUS,
4546 * and will clear only when CSR_FH_INT_STATUS gets cleared. */
4547 inta = iwl3945_read32(priv, CSR_INT);
4548 iwl3945_write32(priv, CSR_INT, inta);
4549
4550 /* Ack/clear/reset pending flow-handler (DMA) interrupts.
4551 * Any new interrupts that happen after this, either while we're
4552 * in this tasklet, or later, will show up in next ISR/tasklet. */
4553 inta_fh = iwl3945_read32(priv, CSR_FH_INT_STATUS);
4554 iwl3945_write32(priv, CSR_FH_INT_STATUS, inta_fh);
4555
4556 #ifdef CONFIG_IWL3945_DEBUG
4557 if (iwl3945_debug_level & IWL_DL_ISR) {
4558 /* just for debug */
4559 inta_mask = iwl3945_read32(priv, CSR_INT_MASK);
4560 IWL_DEBUG_ISR("inta 0x%08x, enabled 0x%08x, fh 0x%08x\n",
4561 inta, inta_mask, inta_fh);
4562 }
4563 #endif
4564
4565 /* Since CSR_INT and CSR_FH_INT_STATUS reads and clears are not
4566 * atomic, make sure that inta covers all the interrupts that
4567 * we've discovered, even if FH interrupt came in just after
4568 * reading CSR_INT. */
4569 if (inta_fh & CSR39_FH_INT_RX_MASK)
4570 inta |= CSR_INT_BIT_FH_RX;
4571 if (inta_fh & CSR39_FH_INT_TX_MASK)
4572 inta |= CSR_INT_BIT_FH_TX;
4573
4574 /* Now service all interrupt bits discovered above. */
4575 if (inta & CSR_INT_BIT_HW_ERR) {
4576 IWL_ERROR("Microcode HW error detected. Restarting.\n");
4577
4578 /* Tell the device to stop sending interrupts */
4579 iwl3945_disable_interrupts(priv);
4580
4581 iwl3945_irq_handle_error(priv);
4582
4583 handled |= CSR_INT_BIT_HW_ERR;
4584
4585 spin_unlock_irqrestore(&priv->lock, flags);
4586
4587 return;
4588 }
4589
4590 #ifdef CONFIG_IWL3945_DEBUG
4591 if (iwl3945_debug_level & (IWL_DL_ISR)) {
4592 /* NIC fires this, but we don't use it, redundant with WAKEUP */
4593 if (inta & CSR_INT_BIT_SCD)
4594 IWL_DEBUG_ISR("Scheduler finished to transmit "
4595 "the frame/frames.\n");
4596
4597 /* Alive notification via Rx interrupt will do the real work */
4598 if (inta & CSR_INT_BIT_ALIVE)
4599 IWL_DEBUG_ISR("Alive interrupt\n");
4600 }
4601 #endif
4602 /* Safely ignore these bits for debug checks below */
4603 inta &= ~(CSR_INT_BIT_SCD | CSR_INT_BIT_ALIVE);
4604
4605 /* HW RF KILL switch toggled (4965 only) */
4606 if (inta & CSR_INT_BIT_RF_KILL) {
4607 int hw_rf_kill = 0;
4608 if (!(iwl3945_read32(priv, CSR_GP_CNTRL) &
4609 CSR_GP_CNTRL_REG_FLAG_HW_RF_KILL_SW))
4610 hw_rf_kill = 1;
4611
4612 IWL_DEBUG(IWL_DL_INFO | IWL_DL_RF_KILL | IWL_DL_ISR,
4613 "RF_KILL bit toggled to %s.\n",
4614 hw_rf_kill ? "disable radio":"enable radio");
4615
4616 /* Queue restart only if RF_KILL switch was set to "kill"
4617 * when we loaded driver, and is now set to "enable".
4618 * After we're Alive, RF_KILL gets handled by
4619 * iwl3945_rx_card_state_notif() */
4620 if (!hw_rf_kill && !test_bit(STATUS_ALIVE, &priv->status)) {
4621 clear_bit(STATUS_RF_KILL_HW, &priv->status);
4622 queue_work(priv->workqueue, &priv->restart);
4623 }
4624
4625 handled |= CSR_INT_BIT_RF_KILL;
4626 }
4627
4628 /* Chip got too hot and stopped itself (4965 only) */
4629 if (inta & CSR_INT_BIT_CT_KILL) {
4630 IWL_ERROR("Microcode CT kill error detected.\n");
4631 handled |= CSR_INT_BIT_CT_KILL;
4632 }
4633
4634 /* Error detected by uCode */
4635 if (inta & CSR_INT_BIT_SW_ERR) {
4636 IWL_ERROR("Microcode SW error detected. Restarting 0x%X.\n",
4637 inta);
4638 iwl3945_irq_handle_error(priv);
4639 handled |= CSR_INT_BIT_SW_ERR;
4640 }
4641
4642 /* uCode wakes up after power-down sleep */
4643 if (inta & CSR_INT_BIT_WAKEUP) {
4644 IWL_DEBUG_ISR("Wakeup interrupt\n");
4645 iwl3945_rx_queue_update_write_ptr(priv, &priv->rxq);
4646 iwl3945_tx_queue_update_write_ptr(priv, &priv->txq[0]);
4647 iwl3945_tx_queue_update_write_ptr(priv, &priv->txq[1]);
4648 iwl3945_tx_queue_update_write_ptr(priv, &priv->txq[2]);
4649 iwl3945_tx_queue_update_write_ptr(priv, &priv->txq[3]);
4650 iwl3945_tx_queue_update_write_ptr(priv, &priv->txq[4]);
4651 iwl3945_tx_queue_update_write_ptr(priv, &priv->txq[5]);
4652
4653 handled |= CSR_INT_BIT_WAKEUP;
4654 }
4655
4656 /* All uCode command responses, including Tx command responses,
4657 * Rx "responses" (frame-received notification), and other
4658 * notifications from uCode come through here*/
4659 if (inta & (CSR_INT_BIT_FH_RX | CSR_INT_BIT_SW_RX)) {
4660 iwl3945_rx_handle(priv);
4661 handled |= (CSR_INT_BIT_FH_RX | CSR_INT_BIT_SW_RX);
4662 }
4663
4664 if (inta & CSR_INT_BIT_FH_TX) {
4665 IWL_DEBUG_ISR("Tx interrupt\n");
4666
4667 iwl3945_write32(priv, CSR_FH_INT_STATUS, (1 << 6));
4668 if (!iwl3945_grab_nic_access(priv)) {
4669 iwl3945_write_direct32(priv,
4670 FH_TCSR_CREDIT
4671 (ALM_FH_SRVC_CHNL), 0x0);
4672 iwl3945_release_nic_access(priv);
4673 }
4674 handled |= CSR_INT_BIT_FH_TX;
4675 }
4676
4677 if (inta & ~handled)
4678 IWL_ERROR("Unhandled INTA bits 0x%08x\n", inta & ~handled);
4679
4680 if (inta & ~CSR_INI_SET_MASK) {
4681 IWL_WARNING("Disabled INTA bits 0x%08x were pending\n",
4682 inta & ~CSR_INI_SET_MASK);
4683 IWL_WARNING(" with FH_INT = 0x%08x\n", inta_fh);
4684 }
4685
4686 /* Re-enable all interrupts */
4687 iwl3945_enable_interrupts(priv);
4688
4689 #ifdef CONFIG_IWL3945_DEBUG
4690 if (iwl3945_debug_level & (IWL_DL_ISR)) {
4691 inta = iwl3945_read32(priv, CSR_INT);
4692 inta_mask = iwl3945_read32(priv, CSR_INT_MASK);
4693 inta_fh = iwl3945_read32(priv, CSR_FH_INT_STATUS);
4694 IWL_DEBUG_ISR("End inta 0x%08x, enabled 0x%08x, fh 0x%08x, "
4695 "flags 0x%08lx\n", inta, inta_mask, inta_fh, flags);
4696 }
4697 #endif
4698 spin_unlock_irqrestore(&priv->lock, flags);
4699 }
4700
4701 static irqreturn_t iwl3945_isr(int irq, void *data)
4702 {
4703 struct iwl3945_priv *priv = data;
4704 u32 inta, inta_mask;
4705 u32 inta_fh;
4706 if (!priv)
4707 return IRQ_NONE;
4708
4709 spin_lock(&priv->lock);
4710
4711 /* Disable (but don't clear!) interrupts here to avoid
4712 * back-to-back ISRs and sporadic interrupts from our NIC.
4713 * If we have something to service, the tasklet will re-enable ints.
4714 * If we *don't* have something, we'll re-enable before leaving here. */
4715 inta_mask = iwl3945_read32(priv, CSR_INT_MASK); /* just for debug */
4716 iwl3945_write32(priv, CSR_INT_MASK, 0x00000000);
4717
4718 /* Discover which interrupts are active/pending */
4719 inta = iwl3945_read32(priv, CSR_INT);
4720 inta_fh = iwl3945_read32(priv, CSR_FH_INT_STATUS);
4721
4722 /* Ignore interrupt if there's nothing in NIC to service.
4723 * This may be due to IRQ shared with another device,
4724 * or due to sporadic interrupts thrown from our NIC. */
4725 if (!inta && !inta_fh) {
4726 IWL_DEBUG_ISR("Ignore interrupt, inta == 0, inta_fh == 0\n");
4727 goto none;
4728 }
4729
4730 if ((inta == 0xFFFFFFFF) || ((inta & 0xFFFFFFF0) == 0xa5a5a5a0)) {
4731 /* Hardware disappeared */
4732 IWL_WARNING("HARDWARE GONE?? INTA == 0x%080x\n", inta);
4733 goto unplugged;
4734 }
4735
4736 IWL_DEBUG_ISR("ISR inta 0x%08x, enabled 0x%08x, fh 0x%08x\n",
4737 inta, inta_mask, inta_fh);
4738
4739 inta &= ~CSR_INT_BIT_SCD;
4740
4741 /* iwl3945_irq_tasklet() will service interrupts and re-enable them */
4742 if (likely(inta || inta_fh))
4743 tasklet_schedule(&priv->irq_tasklet);
4744 unplugged:
4745 spin_unlock(&priv->lock);
4746
4747 return IRQ_HANDLED;
4748
4749 none:
4750 /* re-enable interrupts here since we don't have anything to service. */
4751 iwl3945_enable_interrupts(priv);
4752 spin_unlock(&priv->lock);
4753 return IRQ_NONE;
4754 }
4755
4756 /************************** EEPROM BANDS ****************************
4757 *
4758 * The iwl3945_eeprom_band definitions below provide the mapping from the
4759 * EEPROM contents to the specific channel number supported for each
4760 * band.
4761 *
4762 * For example, iwl3945_priv->eeprom.band_3_channels[4] from the band_3
4763 * definition below maps to physical channel 42 in the 5.2GHz spectrum.
4764 * The specific geography and calibration information for that channel
4765 * is contained in the eeprom map itself.
4766 *
4767 * During init, we copy the eeprom information and channel map
4768 * information into priv->channel_info_24/52 and priv->channel_map_24/52
4769 *
4770 * channel_map_24/52 provides the index in the channel_info array for a
4771 * given channel. We have to have two separate maps as there is channel
4772 * overlap with the 2.4GHz and 5.2GHz spectrum as seen in band_1 and
4773 * band_2
4774 *
4775 * A value of 0xff stored in the channel_map indicates that the channel
4776 * is not supported by the hardware at all.
4777 *
4778 * A value of 0xfe in the channel_map indicates that the channel is not
4779 * valid for Tx with the current hardware. This means that
4780 * while the system can tune and receive on a given channel, it may not
4781 * be able to associate or transmit any frames on that
4782 * channel. There is no corresponding channel information for that
4783 * entry.
4784 *
4785 *********************************************************************/
4786
4787 /* 2.4 GHz */
4788 static const u8 iwl3945_eeprom_band_1[14] = {
4789 1, 2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13, 14
4790 };
4791
4792 /* 5.2 GHz bands */
4793 static const u8 iwl3945_eeprom_band_2[] = { /* 4915-5080MHz */
4794 183, 184, 185, 187, 188, 189, 192, 196, 7, 8, 11, 12, 16
4795 };
4796
4797 static const u8 iwl3945_eeprom_band_3[] = { /* 5170-5320MHz */
4798 34, 36, 38, 40, 42, 44, 46, 48, 52, 56, 60, 64
4799 };
4800
4801 static const u8 iwl3945_eeprom_band_4[] = { /* 5500-5700MHz */
4802 100, 104, 108, 112, 116, 120, 124, 128, 132, 136, 140
4803 };
4804
4805 static const u8 iwl3945_eeprom_band_5[] = { /* 5725-5825MHz */
4806 145, 149, 153, 157, 161, 165
4807 };
4808
4809 static void iwl3945_init_band_reference(const struct iwl3945_priv *priv, int band,
4810 int *eeprom_ch_count,
4811 const struct iwl3945_eeprom_channel
4812 **eeprom_ch_info,
4813 const u8 **eeprom_ch_index)
4814 {
4815 switch (band) {
4816 case 1: /* 2.4GHz band */
4817 *eeprom_ch_count = ARRAY_SIZE(iwl3945_eeprom_band_1);
4818 *eeprom_ch_info = priv->eeprom.band_1_channels;
4819 *eeprom_ch_index = iwl3945_eeprom_band_1;
4820 break;
4821 case 2: /* 4.9GHz band */
4822 *eeprom_ch_count = ARRAY_SIZE(iwl3945_eeprom_band_2);
4823 *eeprom_ch_info = priv->eeprom.band_2_channels;
4824 *eeprom_ch_index = iwl3945_eeprom_band_2;
4825 break;
4826 case 3: /* 5.2GHz band */
4827 *eeprom_ch_count = ARRAY_SIZE(iwl3945_eeprom_band_3);
4828 *eeprom_ch_info = priv->eeprom.band_3_channels;
4829 *eeprom_ch_index = iwl3945_eeprom_band_3;
4830 break;
4831 case 4: /* 5.5GHz band */
4832 *eeprom_ch_count = ARRAY_SIZE(iwl3945_eeprom_band_4);
4833 *eeprom_ch_info = priv->eeprom.band_4_channels;
4834 *eeprom_ch_index = iwl3945_eeprom_band_4;
4835 break;
4836 case 5: /* 5.7GHz band */
4837 *eeprom_ch_count = ARRAY_SIZE(iwl3945_eeprom_band_5);
4838 *eeprom_ch_info = priv->eeprom.band_5_channels;
4839 *eeprom_ch_index = iwl3945_eeprom_band_5;
4840 break;
4841 default:
4842 BUG();
4843 return;
4844 }
4845 }
4846
4847 /**
4848 * iwl3945_get_channel_info - Find driver's private channel info
4849 *
4850 * Based on band and channel number.
4851 */
4852 const struct iwl3945_channel_info *iwl3945_get_channel_info(const struct iwl3945_priv *priv,
4853 enum ieee80211_band band, u16 channel)
4854 {
4855 int i;
4856
4857 switch (band) {
4858 case IEEE80211_BAND_5GHZ:
4859 for (i = 14; i < priv->channel_count; i++) {
4860 if (priv->channel_info[i].channel == channel)
4861 return &priv->channel_info[i];
4862 }
4863 break;
4864
4865 case IEEE80211_BAND_2GHZ:
4866 if (channel >= 1 && channel <= 14)
4867 return &priv->channel_info[channel - 1];
4868 break;
4869 case IEEE80211_NUM_BANDS:
4870 WARN_ON(1);
4871 }
4872
4873 return NULL;
4874 }
4875
4876 #define CHECK_AND_PRINT(x) ((eeprom_ch_info[ch].flags & EEPROM_CHANNEL_##x) \
4877 ? # x " " : "")
4878
4879 /**
4880 * iwl3945_init_channel_map - Set up driver's info for all possible channels
4881 */
4882 static int iwl3945_init_channel_map(struct iwl3945_priv *priv)
4883 {
4884 int eeprom_ch_count = 0;
4885 const u8 *eeprom_ch_index = NULL;
4886 const struct iwl3945_eeprom_channel *eeprom_ch_info = NULL;
4887 int band, ch;
4888 struct iwl3945_channel_info *ch_info;
4889
4890 if (priv->channel_count) {
4891 IWL_DEBUG_INFO("Channel map already initialized.\n");
4892 return 0;
4893 }
4894
4895 if (priv->eeprom.version < 0x2f) {
4896 IWL_WARNING("Unsupported EEPROM version: 0x%04X\n",
4897 priv->eeprom.version);
4898 return -EINVAL;
4899 }
4900
4901 IWL_DEBUG_INFO("Initializing regulatory info from EEPROM\n");
4902
4903 priv->channel_count =
4904 ARRAY_SIZE(iwl3945_eeprom_band_1) +
4905 ARRAY_SIZE(iwl3945_eeprom_band_2) +
4906 ARRAY_SIZE(iwl3945_eeprom_band_3) +
4907 ARRAY_SIZE(iwl3945_eeprom_band_4) +
4908 ARRAY_SIZE(iwl3945_eeprom_band_5);
4909
4910 IWL_DEBUG_INFO("Parsing data for %d channels.\n", priv->channel_count);
4911
4912 priv->channel_info = kzalloc(sizeof(struct iwl3945_channel_info) *
4913 priv->channel_count, GFP_KERNEL);
4914 if (!priv->channel_info) {
4915 IWL_ERROR("Could not allocate channel_info\n");
4916 priv->channel_count = 0;
4917 return -ENOMEM;
4918 }
4919
4920 ch_info = priv->channel_info;
4921
4922 /* Loop through the 5 EEPROM bands adding them in order to the
4923 * channel map we maintain (that contains additional information than
4924 * what just in the EEPROM) */
4925 for (band = 1; band <= 5; band++) {
4926
4927 iwl3945_init_band_reference(priv, band, &eeprom_ch_count,
4928 &eeprom_ch_info, &eeprom_ch_index);
4929
4930 /* Loop through each band adding each of the channels */
4931 for (ch = 0; ch < eeprom_ch_count; ch++) {
4932 ch_info->channel = eeprom_ch_index[ch];
4933 ch_info->band = (band == 1) ? IEEE80211_BAND_2GHZ :
4934 IEEE80211_BAND_5GHZ;
4935
4936 /* permanently store EEPROM's channel regulatory flags
4937 * and max power in channel info database. */
4938 ch_info->eeprom = eeprom_ch_info[ch];
4939
4940 /* Copy the run-time flags so they are there even on
4941 * invalid channels */
4942 ch_info->flags = eeprom_ch_info[ch].flags;
4943
4944 if (!(is_channel_valid(ch_info))) {
4945 IWL_DEBUG_INFO("Ch. %d Flags %x [%sGHz] - "
4946 "No traffic\n",
4947 ch_info->channel,
4948 ch_info->flags,
4949 is_channel_a_band(ch_info) ?
4950 "5.2" : "2.4");
4951 ch_info++;
4952 continue;
4953 }
4954
4955 /* Initialize regulatory-based run-time data */
4956 ch_info->max_power_avg = ch_info->curr_txpow =
4957 eeprom_ch_info[ch].max_power_avg;
4958 ch_info->scan_power = eeprom_ch_info[ch].max_power_avg;
4959 ch_info->min_power = 0;
4960
4961 IWL_DEBUG_INFO("Ch. %d [%sGHz] %s%s%s%s%s%s%s(0x%02x"
4962 " %ddBm): Ad-Hoc %ssupported\n",
4963 ch_info->channel,
4964 is_channel_a_band(ch_info) ?
4965 "5.2" : "2.4",
4966 CHECK_AND_PRINT(VALID),
4967 CHECK_AND_PRINT(IBSS),
4968 CHECK_AND_PRINT(ACTIVE),
4969 CHECK_AND_PRINT(RADAR),
4970 CHECK_AND_PRINT(WIDE),
4971 CHECK_AND_PRINT(NARROW),
4972 CHECK_AND_PRINT(DFS),
4973 eeprom_ch_info[ch].flags,
4974 eeprom_ch_info[ch].max_power_avg,
4975 ((eeprom_ch_info[ch].
4976 flags & EEPROM_CHANNEL_IBSS)
4977 && !(eeprom_ch_info[ch].
4978 flags & EEPROM_CHANNEL_RADAR))
4979 ? "" : "not ");
4980
4981 /* Set the user_txpower_limit to the highest power
4982 * supported by any channel */
4983 if (eeprom_ch_info[ch].max_power_avg >
4984 priv->user_txpower_limit)
4985 priv->user_txpower_limit =
4986 eeprom_ch_info[ch].max_power_avg;
4987
4988 ch_info++;
4989 }
4990 }
4991
4992 /* Set up txpower settings in driver for all channels */
4993 if (iwl3945_txpower_set_from_eeprom(priv))
4994 return -EIO;
4995
4996 return 0;
4997 }
4998
4999 /*
5000 * iwl3945_free_channel_map - undo allocations in iwl3945_init_channel_map
5001 */
5002 static void iwl3945_free_channel_map(struct iwl3945_priv *priv)
5003 {
5004 kfree(priv->channel_info);
5005 priv->channel_count = 0;
5006 }
5007
5008 /* For active scan, listen ACTIVE_DWELL_TIME (msec) on each channel after
5009 * sending probe req. This should be set long enough to hear probe responses
5010 * from more than one AP. */
5011 #define IWL_ACTIVE_DWELL_TIME_24 (20) /* all times in msec */
5012 #define IWL_ACTIVE_DWELL_TIME_52 (10)
5013
5014 /* For faster active scanning, scan will move to the next channel if fewer than
5015 * PLCP_QUIET_THRESH packets are heard on this channel within
5016 * ACTIVE_QUIET_TIME after sending probe request. This shortens the dwell
5017 * time if it's a quiet channel (nothing responded to our probe, and there's
5018 * no other traffic).
5019 * Disable "quiet" feature by setting PLCP_QUIET_THRESH to 0. */
5020 #define IWL_PLCP_QUIET_THRESH __constant_cpu_to_le16(1) /* packets */
5021 #define IWL_ACTIVE_QUIET_TIME __constant_cpu_to_le16(5) /* msec */
5022
5023 /* For passive scan, listen PASSIVE_DWELL_TIME (msec) on each channel.
5024 * Must be set longer than active dwell time.
5025 * For the most reliable scan, set > AP beacon interval (typically 100msec). */
5026 #define IWL_PASSIVE_DWELL_TIME_24 (20) /* all times in msec */
5027 #define IWL_PASSIVE_DWELL_TIME_52 (10)
5028 #define IWL_PASSIVE_DWELL_BASE (100)
5029 #define IWL_CHANNEL_TUNE_TIME 5
5030
5031 static inline u16 iwl3945_get_active_dwell_time(struct iwl3945_priv *priv,
5032 enum ieee80211_band band)
5033 {
5034 if (band == IEEE80211_BAND_5GHZ)
5035 return IWL_ACTIVE_DWELL_TIME_52;
5036 else
5037 return IWL_ACTIVE_DWELL_TIME_24;
5038 }
5039
5040 static u16 iwl3945_get_passive_dwell_time(struct iwl3945_priv *priv,
5041 enum ieee80211_band band)
5042 {
5043 u16 active = iwl3945_get_active_dwell_time(priv, band);
5044 u16 passive = (band == IEEE80211_BAND_2GHZ) ?
5045 IWL_PASSIVE_DWELL_BASE + IWL_PASSIVE_DWELL_TIME_24 :
5046 IWL_PASSIVE_DWELL_BASE + IWL_PASSIVE_DWELL_TIME_52;
5047
5048 if (iwl3945_is_associated(priv)) {
5049 /* If we're associated, we clamp the maximum passive
5050 * dwell time to be 98% of the beacon interval (minus
5051 * 2 * channel tune time) */
5052 passive = priv->beacon_int;
5053 if ((passive > IWL_PASSIVE_DWELL_BASE) || !passive)
5054 passive = IWL_PASSIVE_DWELL_BASE;
5055 passive = (passive * 98) / 100 - IWL_CHANNEL_TUNE_TIME * 2;
5056 }
5057
5058 if (passive <= active)
5059 passive = active + 1;
5060
5061 return passive;
5062 }
5063
5064 static int iwl3945_get_channels_for_scan(struct iwl3945_priv *priv,
5065 enum ieee80211_band band,
5066 u8 is_active, u8 direct_mask,
5067 struct iwl3945_scan_channel *scan_ch)
5068 {
5069 const struct ieee80211_channel *channels = NULL;
5070 const struct ieee80211_supported_band *sband;
5071 const struct iwl3945_channel_info *ch_info;
5072 u16 passive_dwell = 0;
5073 u16 active_dwell = 0;
5074 int added, i;
5075
5076 sband = iwl3945_get_band(priv, band);
5077 if (!sband)
5078 return 0;
5079
5080 channels = sband->channels;
5081
5082 active_dwell = iwl3945_get_active_dwell_time(priv, band);
5083 passive_dwell = iwl3945_get_passive_dwell_time(priv, band);
5084
5085 for (i = 0, added = 0; i < sband->n_channels; i++) {
5086 if (channels[i].hw_value ==
5087 le16_to_cpu(priv->active_rxon.channel)) {
5088 if (iwl3945_is_associated(priv)) {
5089 IWL_DEBUG_SCAN
5090 ("Skipping current channel %d\n",
5091 le16_to_cpu(priv->active_rxon.channel));
5092 continue;
5093 }
5094 } else if (priv->only_active_channel)
5095 continue;
5096
5097 scan_ch->channel = channels[i].hw_value;
5098
5099 ch_info = iwl3945_get_channel_info(priv, band, scan_ch->channel);
5100 if (!is_channel_valid(ch_info)) {
5101 IWL_DEBUG_SCAN("Channel %d is INVALID for this SKU.\n",
5102 scan_ch->channel);
5103 continue;
5104 }
5105
5106 if (!is_active || is_channel_passive(ch_info) ||
5107 (channels[i].flags & IEEE80211_CHAN_PASSIVE_SCAN))
5108 scan_ch->type = 0; /* passive */
5109 else
5110 scan_ch->type = 1; /* active */
5111
5112 if (scan_ch->type & 1)
5113 scan_ch->type |= (direct_mask << 1);
5114
5115 if (is_channel_narrow(ch_info))
5116 scan_ch->type |= (1 << 7);
5117
5118 scan_ch->active_dwell = cpu_to_le16(active_dwell);
5119 scan_ch->passive_dwell = cpu_to_le16(passive_dwell);
5120
5121 /* Set txpower levels to defaults */
5122 scan_ch->tpc.dsp_atten = 110;
5123 /* scan_pwr_info->tpc.dsp_atten; */
5124
5125 /*scan_pwr_info->tpc.tx_gain; */
5126 if (band == IEEE80211_BAND_5GHZ)
5127 scan_ch->tpc.tx_gain = ((1 << 5) | (3 << 3)) | 3;
5128 else {
5129 scan_ch->tpc.tx_gain = ((1 << 5) | (5 << 3));
5130 /* NOTE: if we were doing 6Mb OFDM for scans we'd use
5131 * power level:
5132 * scan_ch->tpc.tx_gain = ((1 << 5) | (2 << 3)) | 3;
5133 */
5134 }
5135
5136 IWL_DEBUG_SCAN("Scanning %d [%s %d]\n",
5137 scan_ch->channel,
5138 (scan_ch->type & 1) ? "ACTIVE" : "PASSIVE",
5139 (scan_ch->type & 1) ?
5140 active_dwell : passive_dwell);
5141
5142 scan_ch++;
5143 added++;
5144 }
5145
5146 IWL_DEBUG_SCAN("total channels to scan %d \n", added);
5147 return added;
5148 }
5149
5150 static void iwl3945_init_hw_rates(struct iwl3945_priv *priv,
5151 struct ieee80211_rate *rates)
5152 {
5153 int i;
5154
5155 for (i = 0; i < IWL_RATE_COUNT; i++) {
5156 rates[i].bitrate = iwl3945_rates[i].ieee * 5;
5157 rates[i].hw_value = i; /* Rate scaling will work on indexes */
5158 rates[i].hw_value_short = i;
5159 rates[i].flags = 0;
5160 if ((i > IWL_LAST_OFDM_RATE) || (i < IWL_FIRST_OFDM_RATE)) {
5161 /*
5162 * If CCK != 1M then set short preamble rate flag.
5163 */
5164 rates[i].flags |= (iwl3945_rates[i].plcp == 10) ?
5165 0 : IEEE80211_RATE_SHORT_PREAMBLE;
5166 }
5167 }
5168 }
5169
5170 /**
5171 * iwl3945_init_geos - Initialize mac80211's geo/channel info based from eeprom
5172 */
5173 static int iwl3945_init_geos(struct iwl3945_priv *priv)
5174 {
5175 struct iwl3945_channel_info *ch;
5176 struct ieee80211_supported_band *sband;
5177 struct ieee80211_channel *channels;
5178 struct ieee80211_channel *geo_ch;
5179 struct ieee80211_rate *rates;
5180 int i = 0;
5181
5182 if (priv->bands[IEEE80211_BAND_2GHZ].n_bitrates ||
5183 priv->bands[IEEE80211_BAND_5GHZ].n_bitrates) {
5184 IWL_DEBUG_INFO("Geography modes already initialized.\n");
5185 set_bit(STATUS_GEO_CONFIGURED, &priv->status);
5186 return 0;
5187 }
5188
5189 channels = kzalloc(sizeof(struct ieee80211_channel) *
5190 priv->channel_count, GFP_KERNEL);
5191 if (!channels)
5192 return -ENOMEM;
5193
5194 rates = kzalloc((sizeof(struct ieee80211_rate) * (IWL_RATE_COUNT + 1)),
5195 GFP_KERNEL);
5196 if (!rates) {
5197 kfree(channels);
5198 return -ENOMEM;
5199 }
5200
5201 /* 5.2GHz channels start after the 2.4GHz channels */
5202 sband = &priv->bands[IEEE80211_BAND_5GHZ];
5203 sband->channels = &channels[ARRAY_SIZE(iwl3945_eeprom_band_1)];
5204 /* just OFDM */
5205 sband->bitrates = &rates[IWL_FIRST_OFDM_RATE];
5206 sband->n_bitrates = IWL_RATE_COUNT - IWL_FIRST_OFDM_RATE;
5207
5208 sband = &priv->bands[IEEE80211_BAND_2GHZ];
5209 sband->channels = channels;
5210 /* OFDM & CCK */
5211 sband->bitrates = rates;
5212 sband->n_bitrates = IWL_RATE_COUNT;
5213
5214 priv->ieee_channels = channels;
5215 priv->ieee_rates = rates;
5216
5217 iwl3945_init_hw_rates(priv, rates);
5218
5219 for (i = 0; i < priv->channel_count; i++) {
5220 ch = &priv->channel_info[i];
5221
5222 /* FIXME: might be removed if scan is OK*/
5223 if (!is_channel_valid(ch))
5224 continue;
5225
5226 if (is_channel_a_band(ch))
5227 sband = &priv->bands[IEEE80211_BAND_5GHZ];
5228 else
5229 sband = &priv->bands[IEEE80211_BAND_2GHZ];
5230
5231 geo_ch = &sband->channels[sband->n_channels++];
5232
5233 geo_ch->center_freq = ieee80211_channel_to_frequency(ch->channel);
5234 geo_ch->max_power = ch->max_power_avg;
5235 geo_ch->max_antenna_gain = 0xff;
5236 geo_ch->hw_value = ch->channel;
5237
5238 if (is_channel_valid(ch)) {
5239 if (!(ch->flags & EEPROM_CHANNEL_IBSS))
5240 geo_ch->flags |= IEEE80211_CHAN_NO_IBSS;
5241
5242 if (!(ch->flags & EEPROM_CHANNEL_ACTIVE))
5243 geo_ch->flags |= IEEE80211_CHAN_PASSIVE_SCAN;
5244
5245 if (ch->flags & EEPROM_CHANNEL_RADAR)
5246 geo_ch->flags |= IEEE80211_CHAN_RADAR;
5247
5248 if (ch->max_power_avg > priv->max_channel_txpower_limit)
5249 priv->max_channel_txpower_limit =
5250 ch->max_power_avg;
5251 } else {
5252 geo_ch->flags |= IEEE80211_CHAN_DISABLED;
5253 }
5254
5255 /* Save flags for reg domain usage */
5256 geo_ch->orig_flags = geo_ch->flags;
5257
5258 IWL_DEBUG_INFO("Channel %d Freq=%d[%sGHz] %s flag=0%X\n",
5259 ch->channel, geo_ch->center_freq,
5260 is_channel_a_band(ch) ? "5.2" : "2.4",
5261 geo_ch->flags & IEEE80211_CHAN_DISABLED ?
5262 "restricted" : "valid",
5263 geo_ch->flags);
5264 }
5265
5266 if ((priv->bands[IEEE80211_BAND_5GHZ].n_channels == 0) &&
5267 priv->cfg->sku & IWL_SKU_A) {
5268 printk(KERN_INFO DRV_NAME
5269 ": Incorrectly detected BG card as ABG. Please send "
5270 "your PCI ID 0x%04X:0x%04X to maintainer.\n",
5271 priv->pci_dev->device, priv->pci_dev->subsystem_device);
5272 priv->cfg->sku &= ~IWL_SKU_A;
5273 }
5274
5275 printk(KERN_INFO DRV_NAME
5276 ": Tunable channels: %d 802.11bg, %d 802.11a channels\n",
5277 priv->bands[IEEE80211_BAND_2GHZ].n_channels,
5278 priv->bands[IEEE80211_BAND_5GHZ].n_channels);
5279
5280 priv->hw->wiphy->bands[IEEE80211_BAND_2GHZ] = &priv->bands[IEEE80211_BAND_2GHZ];
5281 priv->hw->wiphy->bands[IEEE80211_BAND_5GHZ] = &priv->bands[IEEE80211_BAND_5GHZ];
5282
5283 set_bit(STATUS_GEO_CONFIGURED, &priv->status);
5284
5285 return 0;
5286 }
5287
5288 /*
5289 * iwl3945_free_geos - undo allocations in iwl3945_init_geos
5290 */
5291 static void iwl3945_free_geos(struct iwl3945_priv *priv)
5292 {
5293 kfree(priv->ieee_channels);
5294 kfree(priv->ieee_rates);
5295 clear_bit(STATUS_GEO_CONFIGURED, &priv->status);
5296 }
5297
5298 /******************************************************************************
5299 *
5300 * uCode download functions
5301 *
5302 ******************************************************************************/
5303
5304 static void iwl3945_dealloc_ucode_pci(struct iwl3945_priv *priv)
5305 {
5306 iwl_free_fw_desc(priv->pci_dev, &priv->ucode_code);
5307 iwl_free_fw_desc(priv->pci_dev, &priv->ucode_data);
5308 iwl_free_fw_desc(priv->pci_dev, &priv->ucode_data_backup);
5309 iwl_free_fw_desc(priv->pci_dev, &priv->ucode_init);
5310 iwl_free_fw_desc(priv->pci_dev, &priv->ucode_init_data);
5311 iwl_free_fw_desc(priv->pci_dev, &priv->ucode_boot);
5312 }
5313
5314 /**
5315 * iwl3945_verify_inst_full - verify runtime uCode image in card vs. host,
5316 * looking at all data.
5317 */
5318 static int iwl3945_verify_inst_full(struct iwl3945_priv *priv, __le32 * image, u32 len)
5319 {
5320 u32 val;
5321 u32 save_len = len;
5322 int rc = 0;
5323 u32 errcnt;
5324
5325 IWL_DEBUG_INFO("ucode inst image size is %u\n", len);
5326
5327 rc = iwl3945_grab_nic_access(priv);
5328 if (rc)
5329 return rc;
5330
5331 iwl3945_write_direct32(priv, HBUS_TARG_MEM_RADDR, RTC_INST_LOWER_BOUND);
5332
5333 errcnt = 0;
5334 for (; len > 0; len -= sizeof(u32), image++) {
5335 /* read data comes through single port, auto-incr addr */
5336 /* NOTE: Use the debugless read so we don't flood kernel log
5337 * if IWL_DL_IO is set */
5338 val = _iwl3945_read_direct32(priv, HBUS_TARG_MEM_RDAT);
5339 if (val != le32_to_cpu(*image)) {
5340 IWL_ERROR("uCode INST section is invalid at "
5341 "offset 0x%x, is 0x%x, s/b 0x%x\n",
5342 save_len - len, val, le32_to_cpu(*image));
5343 rc = -EIO;
5344 errcnt++;
5345 if (errcnt >= 20)
5346 break;
5347 }
5348 }
5349
5350 iwl3945_release_nic_access(priv);
5351
5352 if (!errcnt)
5353 IWL_DEBUG_INFO("ucode image in INSTRUCTION memory is good\n");
5354
5355 return rc;
5356 }
5357
5358
5359 /**
5360 * iwl3945_verify_inst_sparse - verify runtime uCode image in card vs. host,
5361 * using sample data 100 bytes apart. If these sample points are good,
5362 * it's a pretty good bet that everything between them is good, too.
5363 */
5364 static int iwl3945_verify_inst_sparse(struct iwl3945_priv *priv, __le32 *image, u32 len)
5365 {
5366 u32 val;
5367 int rc = 0;
5368 u32 errcnt = 0;
5369 u32 i;
5370
5371 IWL_DEBUG_INFO("ucode inst image size is %u\n", len);
5372
5373 rc = iwl3945_grab_nic_access(priv);
5374 if (rc)
5375 return rc;
5376
5377 for (i = 0; i < len; i += 100, image += 100/sizeof(u32)) {
5378 /* read data comes through single port, auto-incr addr */
5379 /* NOTE: Use the debugless read so we don't flood kernel log
5380 * if IWL_DL_IO is set */
5381 iwl3945_write_direct32(priv, HBUS_TARG_MEM_RADDR,
5382 i + RTC_INST_LOWER_BOUND);
5383 val = _iwl3945_read_direct32(priv, HBUS_TARG_MEM_RDAT);
5384 if (val != le32_to_cpu(*image)) {
5385 #if 0 /* Enable this if you want to see details */
5386 IWL_ERROR("uCode INST section is invalid at "
5387 "offset 0x%x, is 0x%x, s/b 0x%x\n",
5388 i, val, *image);
5389 #endif
5390 rc = -EIO;
5391 errcnt++;
5392 if (errcnt >= 3)
5393 break;
5394 }
5395 }
5396
5397 iwl3945_release_nic_access(priv);
5398
5399 return rc;
5400 }
5401
5402
5403 /**
5404 * iwl3945_verify_ucode - determine which instruction image is in SRAM,
5405 * and verify its contents
5406 */
5407 static int iwl3945_verify_ucode(struct iwl3945_priv *priv)
5408 {
5409 __le32 *image;
5410 u32 len;
5411 int rc = 0;
5412
5413 /* Try bootstrap */
5414 image = (__le32 *)priv->ucode_boot.v_addr;
5415 len = priv->ucode_boot.len;
5416 rc = iwl3945_verify_inst_sparse(priv, image, len);
5417 if (rc == 0) {
5418 IWL_DEBUG_INFO("Bootstrap uCode is good in inst SRAM\n");
5419 return 0;
5420 }
5421
5422 /* Try initialize */
5423 image = (__le32 *)priv->ucode_init.v_addr;
5424 len = priv->ucode_init.len;
5425 rc = iwl3945_verify_inst_sparse(priv, image, len);
5426 if (rc == 0) {
5427 IWL_DEBUG_INFO("Initialize uCode is good in inst SRAM\n");
5428 return 0;
5429 }
5430
5431 /* Try runtime/protocol */
5432 image = (__le32 *)priv->ucode_code.v_addr;
5433 len = priv->ucode_code.len;
5434 rc = iwl3945_verify_inst_sparse(priv, image, len);
5435 if (rc == 0) {
5436 IWL_DEBUG_INFO("Runtime uCode is good in inst SRAM\n");
5437 return 0;
5438 }
5439
5440 IWL_ERROR("NO VALID UCODE IMAGE IN INSTRUCTION SRAM!!\n");
5441
5442 /* Since nothing seems to match, show first several data entries in
5443 * instruction SRAM, so maybe visual inspection will give a clue.
5444 * Selection of bootstrap image (vs. other images) is arbitrary. */
5445 image = (__le32 *)priv->ucode_boot.v_addr;
5446 len = priv->ucode_boot.len;
5447 rc = iwl3945_verify_inst_full(priv, image, len);
5448
5449 return rc;
5450 }
5451
5452
5453 /* check contents of special bootstrap uCode SRAM */
5454 static int iwl3945_verify_bsm(struct iwl3945_priv *priv)
5455 {
5456 __le32 *image = priv->ucode_boot.v_addr;
5457 u32 len = priv->ucode_boot.len;
5458 u32 reg;
5459 u32 val;
5460
5461 IWL_DEBUG_INFO("Begin verify bsm\n");
5462
5463 /* verify BSM SRAM contents */
5464 val = iwl3945_read_prph(priv, BSM_WR_DWCOUNT_REG);
5465 for (reg = BSM_SRAM_LOWER_BOUND;
5466 reg < BSM_SRAM_LOWER_BOUND + len;
5467 reg += sizeof(u32), image ++) {
5468 val = iwl3945_read_prph(priv, reg);
5469 if (val != le32_to_cpu(*image)) {
5470 IWL_ERROR("BSM uCode verification failed at "
5471 "addr 0x%08X+%u (of %u), is 0x%x, s/b 0x%x\n",
5472 BSM_SRAM_LOWER_BOUND,
5473 reg - BSM_SRAM_LOWER_BOUND, len,
5474 val, le32_to_cpu(*image));
5475 return -EIO;
5476 }
5477 }
5478
5479 IWL_DEBUG_INFO("BSM bootstrap uCode image OK\n");
5480
5481 return 0;
5482 }
5483
5484 /**
5485 * iwl3945_load_bsm - Load bootstrap instructions
5486 *
5487 * BSM operation:
5488 *
5489 * The Bootstrap State Machine (BSM) stores a short bootstrap uCode program
5490 * in special SRAM that does not power down during RFKILL. When powering back
5491 * up after power-saving sleeps (or during initial uCode load), the BSM loads
5492 * the bootstrap program into the on-board processor, and starts it.
5493 *
5494 * The bootstrap program loads (via DMA) instructions and data for a new
5495 * program from host DRAM locations indicated by the host driver in the
5496 * BSM_DRAM_* registers. Once the new program is loaded, it starts
5497 * automatically.
5498 *
5499 * When initializing the NIC, the host driver points the BSM to the
5500 * "initialize" uCode image. This uCode sets up some internal data, then
5501 * notifies host via "initialize alive" that it is complete.
5502 *
5503 * The host then replaces the BSM_DRAM_* pointer values to point to the
5504 * normal runtime uCode instructions and a backup uCode data cache buffer
5505 * (filled initially with starting data values for the on-board processor),
5506 * then triggers the "initialize" uCode to load and launch the runtime uCode,
5507 * which begins normal operation.
5508 *
5509 * When doing a power-save shutdown, runtime uCode saves data SRAM into
5510 * the backup data cache in DRAM before SRAM is powered down.
5511 *
5512 * When powering back up, the BSM loads the bootstrap program. This reloads
5513 * the runtime uCode instructions and the backup data cache into SRAM,
5514 * and re-launches the runtime uCode from where it left off.
5515 */
5516 static int iwl3945_load_bsm(struct iwl3945_priv *priv)
5517 {
5518 __le32 *image = priv->ucode_boot.v_addr;
5519 u32 len = priv->ucode_boot.len;
5520 dma_addr_t pinst;
5521 dma_addr_t pdata;
5522 u32 inst_len;
5523 u32 data_len;
5524 int rc;
5525 int i;
5526 u32 done;
5527 u32 reg_offset;
5528
5529 IWL_DEBUG_INFO("Begin load bsm\n");
5530
5531 /* make sure bootstrap program is no larger than BSM's SRAM size */
5532 if (len > IWL_MAX_BSM_SIZE)
5533 return -EINVAL;
5534
5535 /* Tell bootstrap uCode where to find the "Initialize" uCode
5536 * in host DRAM ... host DRAM physical address bits 31:0 for 3945.
5537 * NOTE: iwl3945_initialize_alive_start() will replace these values,
5538 * after the "initialize" uCode has run, to point to
5539 * runtime/protocol instructions and backup data cache. */
5540 pinst = priv->ucode_init.p_addr;
5541 pdata = priv->ucode_init_data.p_addr;
5542 inst_len = priv->ucode_init.len;
5543 data_len = priv->ucode_init_data.len;
5544
5545 rc = iwl3945_grab_nic_access(priv);
5546 if (rc)
5547 return rc;
5548
5549 iwl3945_write_prph(priv, BSM_DRAM_INST_PTR_REG, pinst);
5550 iwl3945_write_prph(priv, BSM_DRAM_DATA_PTR_REG, pdata);
5551 iwl3945_write_prph(priv, BSM_DRAM_INST_BYTECOUNT_REG, inst_len);
5552 iwl3945_write_prph(priv, BSM_DRAM_DATA_BYTECOUNT_REG, data_len);
5553
5554 /* Fill BSM memory with bootstrap instructions */
5555 for (reg_offset = BSM_SRAM_LOWER_BOUND;
5556 reg_offset < BSM_SRAM_LOWER_BOUND + len;
5557 reg_offset += sizeof(u32), image++)
5558 _iwl3945_write_prph(priv, reg_offset,
5559 le32_to_cpu(*image));
5560
5561 rc = iwl3945_verify_bsm(priv);
5562 if (rc) {
5563 iwl3945_release_nic_access(priv);
5564 return rc;
5565 }
5566
5567 /* Tell BSM to copy from BSM SRAM into instruction SRAM, when asked */
5568 iwl3945_write_prph(priv, BSM_WR_MEM_SRC_REG, 0x0);
5569 iwl3945_write_prph(priv, BSM_WR_MEM_DST_REG,
5570 RTC_INST_LOWER_BOUND);
5571 iwl3945_write_prph(priv, BSM_WR_DWCOUNT_REG, len / sizeof(u32));
5572
5573 /* Load bootstrap code into instruction SRAM now,
5574 * to prepare to load "initialize" uCode */
5575 iwl3945_write_prph(priv, BSM_WR_CTRL_REG,
5576 BSM_WR_CTRL_REG_BIT_START);
5577
5578 /* Wait for load of bootstrap uCode to finish */
5579 for (i = 0; i < 100; i++) {
5580 done = iwl3945_read_prph(priv, BSM_WR_CTRL_REG);
5581 if (!(done & BSM_WR_CTRL_REG_BIT_START))
5582 break;
5583 udelay(10);
5584 }
5585 if (i < 100)
5586 IWL_DEBUG_INFO("BSM write complete, poll %d iterations\n", i);
5587 else {
5588 IWL_ERROR("BSM write did not complete!\n");
5589 return -EIO;
5590 }
5591
5592 /* Enable future boot loads whenever power management unit triggers it
5593 * (e.g. when powering back up after power-save shutdown) */
5594 iwl3945_write_prph(priv, BSM_WR_CTRL_REG,
5595 BSM_WR_CTRL_REG_BIT_START_EN);
5596
5597 iwl3945_release_nic_access(priv);
5598
5599 return 0;
5600 }
5601
5602 static void iwl3945_nic_start(struct iwl3945_priv *priv)
5603 {
5604 /* Remove all resets to allow NIC to operate */
5605 iwl3945_write32(priv, CSR_RESET, 0);
5606 }
5607
5608 /**
5609 * iwl3945_read_ucode - Read uCode images from disk file.
5610 *
5611 * Copy into buffers for card to fetch via bus-mastering
5612 */
5613 static int iwl3945_read_ucode(struct iwl3945_priv *priv)
5614 {
5615 struct iwl3945_ucode *ucode;
5616 int ret = 0;
5617 const struct firmware *ucode_raw;
5618 /* firmware file name contains uCode/driver compatibility version */
5619 const char *name = priv->cfg->fw_name;
5620 u8 *src;
5621 size_t len;
5622 u32 ver, inst_size, data_size, init_size, init_data_size, boot_size;
5623
5624 /* Ask kernel firmware_class module to get the boot firmware off disk.
5625 * request_firmware() is synchronous, file is in memory on return. */
5626 ret = request_firmware(&ucode_raw, name, &priv->pci_dev->dev);
5627 if (ret < 0) {
5628 IWL_ERROR("%s firmware file req failed: Reason %d\n",
5629 name, ret);
5630 goto error;
5631 }
5632
5633 IWL_DEBUG_INFO("Got firmware '%s' file (%zd bytes) from disk\n",
5634 name, ucode_raw->size);
5635
5636 /* Make sure that we got at least our header! */
5637 if (ucode_raw->size < sizeof(*ucode)) {
5638 IWL_ERROR("File size way too small!\n");
5639 ret = -EINVAL;
5640 goto err_release;
5641 }
5642
5643 /* Data from ucode file: header followed by uCode images */
5644 ucode = (void *)ucode_raw->data;
5645
5646 ver = le32_to_cpu(ucode->ver);
5647 inst_size = le32_to_cpu(ucode->inst_size);
5648 data_size = le32_to_cpu(ucode->data_size);
5649 init_size = le32_to_cpu(ucode->init_size);
5650 init_data_size = le32_to_cpu(ucode->init_data_size);
5651 boot_size = le32_to_cpu(ucode->boot_size);
5652
5653 IWL_DEBUG_INFO("f/w package hdr ucode version = 0x%x\n", ver);
5654 IWL_DEBUG_INFO("f/w package hdr runtime inst size = %u\n", inst_size);
5655 IWL_DEBUG_INFO("f/w package hdr runtime data size = %u\n", data_size);
5656 IWL_DEBUG_INFO("f/w package hdr init inst size = %u\n", init_size);
5657 IWL_DEBUG_INFO("f/w package hdr init data size = %u\n", init_data_size);
5658 IWL_DEBUG_INFO("f/w package hdr boot inst size = %u\n", boot_size);
5659
5660 /* Verify size of file vs. image size info in file's header */
5661 if (ucode_raw->size < sizeof(*ucode) +
5662 inst_size + data_size + init_size +
5663 init_data_size + boot_size) {
5664
5665 IWL_DEBUG_INFO("uCode file size %d too small\n",
5666 (int)ucode_raw->size);
5667 ret = -EINVAL;
5668 goto err_release;
5669 }
5670
5671 /* Verify that uCode images will fit in card's SRAM */
5672 if (inst_size > IWL_MAX_INST_SIZE) {
5673 IWL_DEBUG_INFO("uCode instr len %d too large to fit in\n",
5674 inst_size);
5675 ret = -EINVAL;
5676 goto err_release;
5677 }
5678
5679 if (data_size > IWL_MAX_DATA_SIZE) {
5680 IWL_DEBUG_INFO("uCode data len %d too large to fit in\n",
5681 data_size);
5682 ret = -EINVAL;
5683 goto err_release;
5684 }
5685 if (init_size > IWL_MAX_INST_SIZE) {
5686 IWL_DEBUG_INFO("uCode init instr len %d too large to fit in\n",
5687 init_size);
5688 ret = -EINVAL;
5689 goto err_release;
5690 }
5691 if (init_data_size > IWL_MAX_DATA_SIZE) {
5692 IWL_DEBUG_INFO("uCode init data len %d too large to fit in\n",
5693 init_data_size);
5694 ret = -EINVAL;
5695 goto err_release;
5696 }
5697 if (boot_size > IWL_MAX_BSM_SIZE) {
5698 IWL_DEBUG_INFO("uCode boot instr len %d too large to fit in\n",
5699 boot_size);
5700 ret = -EINVAL;
5701 goto err_release;
5702 }
5703
5704 /* Allocate ucode buffers for card's bus-master loading ... */
5705
5706 /* Runtime instructions and 2 copies of data:
5707 * 1) unmodified from disk
5708 * 2) backup cache for save/restore during power-downs */
5709 priv->ucode_code.len = inst_size;
5710 iwl_alloc_fw_desc(priv->pci_dev, &priv->ucode_code);
5711
5712 priv->ucode_data.len = data_size;
5713 iwl_alloc_fw_desc(priv->pci_dev, &priv->ucode_data);
5714
5715 priv->ucode_data_backup.len = data_size;
5716 iwl_alloc_fw_desc(priv->pci_dev, &priv->ucode_data_backup);
5717
5718 if (!priv->ucode_code.v_addr || !priv->ucode_data.v_addr ||
5719 !priv->ucode_data_backup.v_addr)
5720 goto err_pci_alloc;
5721
5722 /* Initialization instructions and data */
5723 if (init_size && init_data_size) {
5724 priv->ucode_init.len = init_size;
5725 iwl_alloc_fw_desc(priv->pci_dev, &priv->ucode_init);
5726
5727 priv->ucode_init_data.len = init_data_size;
5728 iwl_alloc_fw_desc(priv->pci_dev, &priv->ucode_init_data);
5729
5730 if (!priv->ucode_init.v_addr || !priv->ucode_init_data.v_addr)
5731 goto err_pci_alloc;
5732 }
5733
5734 /* Bootstrap (instructions only, no data) */
5735 if (boot_size) {
5736 priv->ucode_boot.len = boot_size;
5737 iwl_alloc_fw_desc(priv->pci_dev, &priv->ucode_boot);
5738
5739 if (!priv->ucode_boot.v_addr)
5740 goto err_pci_alloc;
5741 }
5742
5743 /* Copy images into buffers for card's bus-master reads ... */
5744
5745 /* Runtime instructions (first block of data in file) */
5746 src = &ucode->data[0];
5747 len = priv->ucode_code.len;
5748 IWL_DEBUG_INFO("Copying (but not loading) uCode instr len %Zd\n", len);
5749 memcpy(priv->ucode_code.v_addr, src, len);
5750 IWL_DEBUG_INFO("uCode instr buf vaddr = 0x%p, paddr = 0x%08x\n",
5751 priv->ucode_code.v_addr, (u32)priv->ucode_code.p_addr);
5752
5753 /* Runtime data (2nd block)
5754 * NOTE: Copy into backup buffer will be done in iwl3945_up() */
5755 src = &ucode->data[inst_size];
5756 len = priv->ucode_data.len;
5757 IWL_DEBUG_INFO("Copying (but not loading) uCode data len %Zd\n", len);
5758 memcpy(priv->ucode_data.v_addr, src, len);
5759 memcpy(priv->ucode_data_backup.v_addr, src, len);
5760
5761 /* Initialization instructions (3rd block) */
5762 if (init_size) {
5763 src = &ucode->data[inst_size + data_size];
5764 len = priv->ucode_init.len;
5765 IWL_DEBUG_INFO("Copying (but not loading) init instr len %Zd\n",
5766 len);
5767 memcpy(priv->ucode_init.v_addr, src, len);
5768 }
5769
5770 /* Initialization data (4th block) */
5771 if (init_data_size) {
5772 src = &ucode->data[inst_size + data_size + init_size];
5773 len = priv->ucode_init_data.len;
5774 IWL_DEBUG_INFO("Copying (but not loading) init data len %d\n",
5775 (int)len);
5776 memcpy(priv->ucode_init_data.v_addr, src, len);
5777 }
5778
5779 /* Bootstrap instructions (5th block) */
5780 src = &ucode->data[inst_size + data_size + init_size + init_data_size];
5781 len = priv->ucode_boot.len;
5782 IWL_DEBUG_INFO("Copying (but not loading) boot instr len %d\n",
5783 (int)len);
5784 memcpy(priv->ucode_boot.v_addr, src, len);
5785
5786 /* We have our copies now, allow OS release its copies */
5787 release_firmware(ucode_raw);
5788 return 0;
5789
5790 err_pci_alloc:
5791 IWL_ERROR("failed to allocate pci memory\n");
5792 ret = -ENOMEM;
5793 iwl3945_dealloc_ucode_pci(priv);
5794
5795 err_release:
5796 release_firmware(ucode_raw);
5797
5798 error:
5799 return ret;
5800 }
5801
5802
5803 /**
5804 * iwl3945_set_ucode_ptrs - Set uCode address location
5805 *
5806 * Tell initialization uCode where to find runtime uCode.
5807 *
5808 * BSM registers initially contain pointers to initialization uCode.
5809 * We need to replace them to load runtime uCode inst and data,
5810 * and to save runtime data when powering down.
5811 */
5812 static int iwl3945_set_ucode_ptrs(struct iwl3945_priv *priv)
5813 {
5814 dma_addr_t pinst;
5815 dma_addr_t pdata;
5816 int rc = 0;
5817 unsigned long flags;
5818
5819 /* bits 31:0 for 3945 */
5820 pinst = priv->ucode_code.p_addr;
5821 pdata = priv->ucode_data_backup.p_addr;
5822
5823 spin_lock_irqsave(&priv->lock, flags);
5824 rc = iwl3945_grab_nic_access(priv);
5825 if (rc) {
5826 spin_unlock_irqrestore(&priv->lock, flags);
5827 return rc;
5828 }
5829
5830 /* Tell bootstrap uCode where to find image to load */
5831 iwl3945_write_prph(priv, BSM_DRAM_INST_PTR_REG, pinst);
5832 iwl3945_write_prph(priv, BSM_DRAM_DATA_PTR_REG, pdata);
5833 iwl3945_write_prph(priv, BSM_DRAM_DATA_BYTECOUNT_REG,
5834 priv->ucode_data.len);
5835
5836 /* Inst bytecount must be last to set up, bit 31 signals uCode
5837 * that all new ptr/size info is in place */
5838 iwl3945_write_prph(priv, BSM_DRAM_INST_BYTECOUNT_REG,
5839 priv->ucode_code.len | BSM_DRAM_INST_LOAD);
5840
5841 iwl3945_release_nic_access(priv);
5842
5843 spin_unlock_irqrestore(&priv->lock, flags);
5844
5845 IWL_DEBUG_INFO("Runtime uCode pointers are set.\n");
5846
5847 return rc;
5848 }
5849
5850 /**
5851 * iwl3945_init_alive_start - Called after REPLY_ALIVE notification received
5852 *
5853 * Called after REPLY_ALIVE notification received from "initialize" uCode.
5854 *
5855 * Tell "initialize" uCode to go ahead and load the runtime uCode.
5856 */
5857 static void iwl3945_init_alive_start(struct iwl3945_priv *priv)
5858 {
5859 /* Check alive response for "valid" sign from uCode */
5860 if (priv->card_alive_init.is_valid != UCODE_VALID_OK) {
5861 /* We had an error bringing up the hardware, so take it
5862 * all the way back down so we can try again */
5863 IWL_DEBUG_INFO("Initialize Alive failed.\n");
5864 goto restart;
5865 }
5866
5867 /* Bootstrap uCode has loaded initialize uCode ... verify inst image.
5868 * This is a paranoid check, because we would not have gotten the
5869 * "initialize" alive if code weren't properly loaded. */
5870 if (iwl3945_verify_ucode(priv)) {
5871 /* Runtime instruction load was bad;
5872 * take it all the way back down so we can try again */
5873 IWL_DEBUG_INFO("Bad \"initialize\" uCode load.\n");
5874 goto restart;
5875 }
5876
5877 /* Send pointers to protocol/runtime uCode image ... init code will
5878 * load and launch runtime uCode, which will send us another "Alive"
5879 * notification. */
5880 IWL_DEBUG_INFO("Initialization Alive received.\n");
5881 if (iwl3945_set_ucode_ptrs(priv)) {
5882 /* Runtime instruction load won't happen;
5883 * take it all the way back down so we can try again */
5884 IWL_DEBUG_INFO("Couldn't set up uCode pointers.\n");
5885 goto restart;
5886 }
5887 return;
5888
5889 restart:
5890 queue_work(priv->workqueue, &priv->restart);
5891 }
5892
5893
5894 /**
5895 * iwl3945_alive_start - called after REPLY_ALIVE notification received
5896 * from protocol/runtime uCode (initialization uCode's
5897 * Alive gets handled by iwl3945_init_alive_start()).
5898 */
5899 static void iwl3945_alive_start(struct iwl3945_priv *priv)
5900 {
5901 int rc = 0;
5902 int thermal_spin = 0;
5903 u32 rfkill;
5904
5905 IWL_DEBUG_INFO("Runtime Alive received.\n");
5906
5907 if (priv->card_alive.is_valid != UCODE_VALID_OK) {
5908 /* We had an error bringing up the hardware, so take it
5909 * all the way back down so we can try again */
5910 IWL_DEBUG_INFO("Alive failed.\n");
5911 goto restart;
5912 }
5913
5914 /* Initialize uCode has loaded Runtime uCode ... verify inst image.
5915 * This is a paranoid check, because we would not have gotten the
5916 * "runtime" alive if code weren't properly loaded. */
5917 if (iwl3945_verify_ucode(priv)) {
5918 /* Runtime instruction load was bad;
5919 * take it all the way back down so we can try again */
5920 IWL_DEBUG_INFO("Bad runtime uCode load.\n");
5921 goto restart;
5922 }
5923
5924 iwl3945_clear_stations_table(priv);
5925
5926 rc = iwl3945_grab_nic_access(priv);
5927 if (rc) {
5928 IWL_WARNING("Can not read rfkill status from adapter\n");
5929 return;
5930 }
5931
5932 rfkill = iwl3945_read_prph(priv, APMG_RFKILL_REG);
5933 IWL_DEBUG_INFO("RFKILL status: 0x%x\n", rfkill);
5934 iwl3945_release_nic_access(priv);
5935
5936 if (rfkill & 0x1) {
5937 clear_bit(STATUS_RF_KILL_HW, &priv->status);
5938 /* if rfkill is not on, then wait for thermal
5939 * sensor in adapter to kick in */
5940 while (iwl3945_hw_get_temperature(priv) == 0) {
5941 thermal_spin++;
5942 udelay(10);
5943 }
5944
5945 if (thermal_spin)
5946 IWL_DEBUG_INFO("Thermal calibration took %dus\n",
5947 thermal_spin * 10);
5948 } else
5949 set_bit(STATUS_RF_KILL_HW, &priv->status);
5950
5951 /* After the ALIVE response, we can send commands to 3945 uCode */
5952 set_bit(STATUS_ALIVE, &priv->status);
5953
5954 /* Clear out the uCode error bit if it is set */
5955 clear_bit(STATUS_FW_ERROR, &priv->status);
5956
5957 if (iwl3945_is_rfkill(priv))
5958 return;
5959
5960 ieee80211_start_queues(priv->hw);
5961
5962 priv->active_rate = priv->rates_mask;
5963 priv->active_rate_basic = priv->rates_mask & IWL_BASIC_RATES_MASK;
5964
5965 iwl3945_send_power_mode(priv, IWL_POWER_LEVEL(priv->power_mode));
5966
5967 if (iwl3945_is_associated(priv)) {
5968 struct iwl3945_rxon_cmd *active_rxon =
5969 (struct iwl3945_rxon_cmd *)(&priv->active_rxon);
5970
5971 memcpy(&priv->staging_rxon, &priv->active_rxon,
5972 sizeof(priv->staging_rxon));
5973 active_rxon->filter_flags &= ~RXON_FILTER_ASSOC_MSK;
5974 } else {
5975 /* Initialize our rx_config data */
5976 iwl3945_connection_init_rx_config(priv);
5977 memcpy(priv->staging_rxon.node_addr, priv->mac_addr, ETH_ALEN);
5978 }
5979
5980 /* Configure Bluetooth device coexistence support */
5981 iwl3945_send_bt_config(priv);
5982
5983 /* Configure the adapter for unassociated operation */
5984 iwl3945_commit_rxon(priv);
5985
5986 /* At this point, the NIC is initialized and operational */
5987 priv->notif_missed_beacons = 0;
5988 set_bit(STATUS_READY, &priv->status);
5989
5990 iwl3945_reg_txpower_periodic(priv);
5991
5992 IWL_DEBUG_INFO("ALIVE processing complete.\n");
5993 wake_up_interruptible(&priv->wait_command_queue);
5994
5995 if (priv->error_recovering)
5996 iwl3945_error_recovery(priv);
5997
5998 return;
5999
6000 restart:
6001 queue_work(priv->workqueue, &priv->restart);
6002 }
6003
6004 static void iwl3945_cancel_deferred_work(struct iwl3945_priv *priv);
6005
6006 static void __iwl3945_down(struct iwl3945_priv *priv)
6007 {
6008 unsigned long flags;
6009 int exit_pending = test_bit(STATUS_EXIT_PENDING, &priv->status);
6010 struct ieee80211_conf *conf = NULL;
6011
6012 IWL_DEBUG_INFO(DRV_NAME " is going down\n");
6013
6014 conf = ieee80211_get_hw_conf(priv->hw);
6015
6016 if (!exit_pending)
6017 set_bit(STATUS_EXIT_PENDING, &priv->status);
6018
6019 iwl3945_clear_stations_table(priv);
6020
6021 /* Unblock any waiting calls */
6022 wake_up_interruptible_all(&priv->wait_command_queue);
6023
6024 /* Wipe out the EXIT_PENDING status bit if we are not actually
6025 * exiting the module */
6026 if (!exit_pending)
6027 clear_bit(STATUS_EXIT_PENDING, &priv->status);
6028
6029 /* stop and reset the on-board processor */
6030 iwl3945_write32(priv, CSR_RESET, CSR_RESET_REG_FLAG_NEVO_RESET);
6031
6032 /* tell the device to stop sending interrupts */
6033 iwl3945_disable_interrupts(priv);
6034
6035 if (priv->mac80211_registered)
6036 ieee80211_stop_queues(priv->hw);
6037
6038 /* If we have not previously called iwl3945_init() then
6039 * clear all bits but the RF Kill and SUSPEND bits and return */
6040 if (!iwl3945_is_init(priv)) {
6041 priv->status = test_bit(STATUS_RF_KILL_HW, &priv->status) <<
6042 STATUS_RF_KILL_HW |
6043 test_bit(STATUS_RF_KILL_SW, &priv->status) <<
6044 STATUS_RF_KILL_SW |
6045 test_bit(STATUS_GEO_CONFIGURED, &priv->status) <<
6046 STATUS_GEO_CONFIGURED |
6047 test_bit(STATUS_IN_SUSPEND, &priv->status) <<
6048 STATUS_IN_SUSPEND;
6049 goto exit;
6050 }
6051
6052 /* ...otherwise clear out all the status bits but the RF Kill and
6053 * SUSPEND bits and continue taking the NIC down. */
6054 priv->status &= test_bit(STATUS_RF_KILL_HW, &priv->status) <<
6055 STATUS_RF_KILL_HW |
6056 test_bit(STATUS_RF_KILL_SW, &priv->status) <<
6057 STATUS_RF_KILL_SW |
6058 test_bit(STATUS_GEO_CONFIGURED, &priv->status) <<
6059 STATUS_GEO_CONFIGURED |
6060 test_bit(STATUS_IN_SUSPEND, &priv->status) <<
6061 STATUS_IN_SUSPEND |
6062 test_bit(STATUS_FW_ERROR, &priv->status) <<
6063 STATUS_FW_ERROR;
6064
6065 spin_lock_irqsave(&priv->lock, flags);
6066 iwl3945_clear_bit(priv, CSR_GP_CNTRL, CSR_GP_CNTRL_REG_FLAG_MAC_ACCESS_REQ);
6067 spin_unlock_irqrestore(&priv->lock, flags);
6068
6069 iwl3945_hw_txq_ctx_stop(priv);
6070 iwl3945_hw_rxq_stop(priv);
6071
6072 spin_lock_irqsave(&priv->lock, flags);
6073 if (!iwl3945_grab_nic_access(priv)) {
6074 iwl3945_write_prph(priv, APMG_CLK_DIS_REG,
6075 APMG_CLK_VAL_DMA_CLK_RQT);
6076 iwl3945_release_nic_access(priv);
6077 }
6078 spin_unlock_irqrestore(&priv->lock, flags);
6079
6080 udelay(5);
6081
6082 iwl3945_hw_nic_stop_master(priv);
6083 iwl3945_set_bit(priv, CSR_RESET, CSR_RESET_REG_FLAG_SW_RESET);
6084 iwl3945_hw_nic_reset(priv);
6085
6086 exit:
6087 memset(&priv->card_alive, 0, sizeof(struct iwl3945_alive_resp));
6088
6089 if (priv->ibss_beacon)
6090 dev_kfree_skb(priv->ibss_beacon);
6091 priv->ibss_beacon = NULL;
6092
6093 /* clear out any free frames */
6094 iwl3945_clear_free_frames(priv);
6095 }
6096
6097 static void iwl3945_down(struct iwl3945_priv *priv)
6098 {
6099 mutex_lock(&priv->mutex);
6100 __iwl3945_down(priv);
6101 mutex_unlock(&priv->mutex);
6102
6103 iwl3945_cancel_deferred_work(priv);
6104 }
6105
6106 #define MAX_HW_RESTARTS 5
6107
6108 static int __iwl3945_up(struct iwl3945_priv *priv)
6109 {
6110 int rc, i;
6111
6112 if (test_bit(STATUS_EXIT_PENDING, &priv->status)) {
6113 IWL_WARNING("Exit pending; will not bring the NIC up\n");
6114 return -EIO;
6115 }
6116
6117 if (test_bit(STATUS_RF_KILL_SW, &priv->status)) {
6118 IWL_WARNING("Radio disabled by SW RF kill (module "
6119 "parameter)\n");
6120 return -ENODEV;
6121 }
6122
6123 if (!priv->ucode_data_backup.v_addr || !priv->ucode_data.v_addr) {
6124 IWL_ERROR("ucode not available for device bringup\n");
6125 return -EIO;
6126 }
6127
6128 /* If platform's RF_KILL switch is NOT set to KILL */
6129 if (iwl3945_read32(priv, CSR_GP_CNTRL) &
6130 CSR_GP_CNTRL_REG_FLAG_HW_RF_KILL_SW)
6131 clear_bit(STATUS_RF_KILL_HW, &priv->status);
6132 else {
6133 set_bit(STATUS_RF_KILL_HW, &priv->status);
6134 if (!test_bit(STATUS_IN_SUSPEND, &priv->status)) {
6135 IWL_WARNING("Radio disabled by HW RF Kill switch\n");
6136 return -ENODEV;
6137 }
6138 }
6139
6140 iwl3945_write32(priv, CSR_INT, 0xFFFFFFFF);
6141
6142 rc = iwl3945_hw_nic_init(priv);
6143 if (rc) {
6144 IWL_ERROR("Unable to int nic\n");
6145 return rc;
6146 }
6147
6148 /* make sure rfkill handshake bits are cleared */
6149 iwl3945_write32(priv, CSR_UCODE_DRV_GP1_CLR, CSR_UCODE_SW_BIT_RFKILL);
6150 iwl3945_write32(priv, CSR_UCODE_DRV_GP1_CLR,
6151 CSR_UCODE_DRV_GP1_BIT_CMD_BLOCKED);
6152
6153 /* clear (again), then enable host interrupts */
6154 iwl3945_write32(priv, CSR_INT, 0xFFFFFFFF);
6155 iwl3945_enable_interrupts(priv);
6156
6157 /* really make sure rfkill handshake bits are cleared */
6158 iwl3945_write32(priv, CSR_UCODE_DRV_GP1_CLR, CSR_UCODE_SW_BIT_RFKILL);
6159 iwl3945_write32(priv, CSR_UCODE_DRV_GP1_CLR, CSR_UCODE_SW_BIT_RFKILL);
6160
6161 /* Copy original ucode data image from disk into backup cache.
6162 * This will be used to initialize the on-board processor's
6163 * data SRAM for a clean start when the runtime program first loads. */
6164 memcpy(priv->ucode_data_backup.v_addr, priv->ucode_data.v_addr,
6165 priv->ucode_data.len);
6166
6167 /* We return success when we resume from suspend and rf_kill is on. */
6168 if (test_bit(STATUS_RF_KILL_HW, &priv->status))
6169 return 0;
6170
6171 for (i = 0; i < MAX_HW_RESTARTS; i++) {
6172
6173 iwl3945_clear_stations_table(priv);
6174
6175 /* load bootstrap state machine,
6176 * load bootstrap program into processor's memory,
6177 * prepare to load the "initialize" uCode */
6178 rc = iwl3945_load_bsm(priv);
6179
6180 if (rc) {
6181 IWL_ERROR("Unable to set up bootstrap uCode: %d\n", rc);
6182 continue;
6183 }
6184
6185 /* start card; "initialize" will load runtime ucode */
6186 iwl3945_nic_start(priv);
6187
6188 IWL_DEBUG_INFO(DRV_NAME " is coming up\n");
6189
6190 return 0;
6191 }
6192
6193 set_bit(STATUS_EXIT_PENDING, &priv->status);
6194 __iwl3945_down(priv);
6195
6196 /* tried to restart and config the device for as long as our
6197 * patience could withstand */
6198 IWL_ERROR("Unable to initialize device after %d attempts.\n", i);
6199 return -EIO;
6200 }
6201
6202
6203 /*****************************************************************************
6204 *
6205 * Workqueue callbacks
6206 *
6207 *****************************************************************************/
6208
6209 static void iwl3945_bg_init_alive_start(struct work_struct *data)
6210 {
6211 struct iwl3945_priv *priv =
6212 container_of(data, struct iwl3945_priv, init_alive_start.work);
6213
6214 if (test_bit(STATUS_EXIT_PENDING, &priv->status))
6215 return;
6216
6217 mutex_lock(&priv->mutex);
6218 iwl3945_init_alive_start(priv);
6219 mutex_unlock(&priv->mutex);
6220 }
6221
6222 static void iwl3945_bg_alive_start(struct work_struct *data)
6223 {
6224 struct iwl3945_priv *priv =
6225 container_of(data, struct iwl3945_priv, alive_start.work);
6226
6227 if (test_bit(STATUS_EXIT_PENDING, &priv->status))
6228 return;
6229
6230 mutex_lock(&priv->mutex);
6231 iwl3945_alive_start(priv);
6232 mutex_unlock(&priv->mutex);
6233 }
6234
6235 static void iwl3945_bg_rf_kill(struct work_struct *work)
6236 {
6237 struct iwl3945_priv *priv = container_of(work, struct iwl3945_priv, rf_kill);
6238
6239 wake_up_interruptible(&priv->wait_command_queue);
6240
6241 if (test_bit(STATUS_EXIT_PENDING, &priv->status))
6242 return;
6243
6244 mutex_lock(&priv->mutex);
6245
6246 if (!iwl3945_is_rfkill(priv)) {
6247 IWL_DEBUG(IWL_DL_INFO | IWL_DL_RF_KILL,
6248 "HW and/or SW RF Kill no longer active, restarting "
6249 "device\n");
6250 if (!test_bit(STATUS_EXIT_PENDING, &priv->status))
6251 queue_work(priv->workqueue, &priv->restart);
6252 } else {
6253
6254 if (!test_bit(STATUS_RF_KILL_HW, &priv->status))
6255 IWL_DEBUG_RF_KILL("Can not turn radio back on - "
6256 "disabled by SW switch\n");
6257 else
6258 IWL_WARNING("Radio Frequency Kill Switch is On:\n"
6259 "Kill switch must be turned off for "
6260 "wireless networking to work.\n");
6261 }
6262 mutex_unlock(&priv->mutex);
6263 }
6264
6265 #define IWL_SCAN_CHECK_WATCHDOG (7 * HZ)
6266
6267 static void iwl3945_bg_scan_check(struct work_struct *data)
6268 {
6269 struct iwl3945_priv *priv =
6270 container_of(data, struct iwl3945_priv, scan_check.work);
6271
6272 if (test_bit(STATUS_EXIT_PENDING, &priv->status))
6273 return;
6274
6275 mutex_lock(&priv->mutex);
6276 if (test_bit(STATUS_SCANNING, &priv->status) ||
6277 test_bit(STATUS_SCAN_ABORTING, &priv->status)) {
6278 IWL_DEBUG(IWL_DL_INFO | IWL_DL_SCAN,
6279 "Scan completion watchdog resetting adapter (%dms)\n",
6280 jiffies_to_msecs(IWL_SCAN_CHECK_WATCHDOG));
6281
6282 if (!test_bit(STATUS_EXIT_PENDING, &priv->status))
6283 iwl3945_send_scan_abort(priv);
6284 }
6285 mutex_unlock(&priv->mutex);
6286 }
6287
6288 static void iwl3945_bg_request_scan(struct work_struct *data)
6289 {
6290 struct iwl3945_priv *priv =
6291 container_of(data, struct iwl3945_priv, request_scan);
6292 struct iwl3945_host_cmd cmd = {
6293 .id = REPLY_SCAN_CMD,
6294 .len = sizeof(struct iwl3945_scan_cmd),
6295 .meta.flags = CMD_SIZE_HUGE,
6296 };
6297 int rc = 0;
6298 struct iwl3945_scan_cmd *scan;
6299 struct ieee80211_conf *conf = NULL;
6300 u8 direct_mask;
6301 enum ieee80211_band band;
6302
6303 conf = ieee80211_get_hw_conf(priv->hw);
6304
6305 mutex_lock(&priv->mutex);
6306
6307 if (!iwl3945_is_ready(priv)) {
6308 IWL_WARNING("request scan called when driver not ready.\n");
6309 goto done;
6310 }
6311
6312 /* Make sure the scan wasn't cancelled before this queued work
6313 * was given the chance to run... */
6314 if (!test_bit(STATUS_SCANNING, &priv->status))
6315 goto done;
6316
6317 /* This should never be called or scheduled if there is currently
6318 * a scan active in the hardware. */
6319 if (test_bit(STATUS_SCAN_HW, &priv->status)) {
6320 IWL_DEBUG_INFO("Multiple concurrent scan requests in parallel. "
6321 "Ignoring second request.\n");
6322 rc = -EIO;
6323 goto done;
6324 }
6325
6326 if (test_bit(STATUS_EXIT_PENDING, &priv->status)) {
6327 IWL_DEBUG_SCAN("Aborting scan due to device shutdown\n");
6328 goto done;
6329 }
6330
6331 if (test_bit(STATUS_SCAN_ABORTING, &priv->status)) {
6332 IWL_DEBUG_HC("Scan request while abort pending. Queuing.\n");
6333 goto done;
6334 }
6335
6336 if (iwl3945_is_rfkill(priv)) {
6337 IWL_DEBUG_HC("Aborting scan due to RF Kill activation\n");
6338 goto done;
6339 }
6340
6341 if (!test_bit(STATUS_READY, &priv->status)) {
6342 IWL_DEBUG_HC("Scan request while uninitialized. Queuing.\n");
6343 goto done;
6344 }
6345
6346 if (!priv->scan_bands) {
6347 IWL_DEBUG_HC("Aborting scan due to no requested bands\n");
6348 goto done;
6349 }
6350
6351 if (!priv->scan) {
6352 priv->scan = kmalloc(sizeof(struct iwl3945_scan_cmd) +
6353 IWL_MAX_SCAN_SIZE, GFP_KERNEL);
6354 if (!priv->scan) {
6355 rc = -ENOMEM;
6356 goto done;
6357 }
6358 }
6359 scan = priv->scan;
6360 memset(scan, 0, sizeof(struct iwl3945_scan_cmd) + IWL_MAX_SCAN_SIZE);
6361
6362 scan->quiet_plcp_th = IWL_PLCP_QUIET_THRESH;
6363 scan->quiet_time = IWL_ACTIVE_QUIET_TIME;
6364
6365 if (iwl3945_is_associated(priv)) {
6366 u16 interval = 0;
6367 u32 extra;
6368 u32 suspend_time = 100;
6369 u32 scan_suspend_time = 100;
6370 unsigned long flags;
6371
6372 IWL_DEBUG_INFO("Scanning while associated...\n");
6373
6374 spin_lock_irqsave(&priv->lock, flags);
6375 interval = priv->beacon_int;
6376 spin_unlock_irqrestore(&priv->lock, flags);
6377
6378 scan->suspend_time = 0;
6379 scan->max_out_time = cpu_to_le32(200 * 1024);
6380 if (!interval)
6381 interval = suspend_time;
6382 /*
6383 * suspend time format:
6384 * 0-19: beacon interval in usec (time before exec.)
6385 * 20-23: 0
6386 * 24-31: number of beacons (suspend between channels)
6387 */
6388
6389 extra = (suspend_time / interval) << 24;
6390 scan_suspend_time = 0xFF0FFFFF &
6391 (extra | ((suspend_time % interval) * 1024));
6392
6393 scan->suspend_time = cpu_to_le32(scan_suspend_time);
6394 IWL_DEBUG_SCAN("suspend_time 0x%X beacon interval %d\n",
6395 scan_suspend_time, interval);
6396 }
6397
6398 /* We should add the ability for user to lock to PASSIVE ONLY */
6399 if (priv->one_direct_scan) {
6400 IWL_DEBUG_SCAN
6401 ("Kicking off one direct scan for '%s'\n",
6402 iwl3945_escape_essid(priv->direct_ssid,
6403 priv->direct_ssid_len));
6404 scan->direct_scan[0].id = WLAN_EID_SSID;
6405 scan->direct_scan[0].len = priv->direct_ssid_len;
6406 memcpy(scan->direct_scan[0].ssid,
6407 priv->direct_ssid, priv->direct_ssid_len);
6408 direct_mask = 1;
6409 } else if (!iwl3945_is_associated(priv) && priv->essid_len) {
6410 scan->direct_scan[0].id = WLAN_EID_SSID;
6411 scan->direct_scan[0].len = priv->essid_len;
6412 memcpy(scan->direct_scan[0].ssid, priv->essid, priv->essid_len);
6413 direct_mask = 1;
6414 } else
6415 direct_mask = 0;
6416
6417 /* We don't build a direct scan probe request; the uCode will do
6418 * that based on the direct_mask added to each channel entry */
6419 scan->tx_cmd.len = cpu_to_le16(
6420 iwl3945_fill_probe_req(priv, (struct ieee80211_mgmt *)scan->data,
6421 IWL_MAX_SCAN_SIZE - sizeof(*scan), 0));
6422 scan->tx_cmd.tx_flags = TX_CMD_FLG_SEQ_CTL_MSK;
6423 scan->tx_cmd.sta_id = priv->hw_setting.bcast_sta_id;
6424 scan->tx_cmd.stop_time.life_time = TX_CMD_LIFE_TIME_INFINITE;
6425
6426 /* flags + rate selection */
6427
6428 switch (priv->scan_bands) {
6429 case 2:
6430 scan->flags = RXON_FLG_BAND_24G_MSK | RXON_FLG_AUTO_DETECT_MSK;
6431 scan->tx_cmd.rate = IWL_RATE_1M_PLCP;
6432 scan->good_CRC_th = 0;
6433 band = IEEE80211_BAND_2GHZ;
6434 break;
6435
6436 case 1:
6437 scan->tx_cmd.rate = IWL_RATE_6M_PLCP;
6438 scan->good_CRC_th = IWL_GOOD_CRC_TH;
6439 band = IEEE80211_BAND_5GHZ;
6440 break;
6441
6442 default:
6443 IWL_WARNING("Invalid scan band count\n");
6444 goto done;
6445 }
6446
6447 /* select Rx antennas */
6448 scan->flags |= iwl3945_get_antenna_flags(priv);
6449
6450 if (priv->iw_mode == IEEE80211_IF_TYPE_MNTR)
6451 scan->filter_flags = RXON_FILTER_PROMISC_MSK;
6452
6453 if (direct_mask)
6454 IWL_DEBUG_SCAN
6455 ("Initiating direct scan for %s.\n",
6456 iwl3945_escape_essid(priv->essid, priv->essid_len));
6457 else
6458 IWL_DEBUG_SCAN("Initiating indirect scan.\n");
6459
6460 scan->channel_count =
6461 iwl3945_get_channels_for_scan(
6462 priv, band, 1, /* active */
6463 direct_mask,
6464 (void *)&scan->data[le16_to_cpu(scan->tx_cmd.len)]);
6465
6466 cmd.len += le16_to_cpu(scan->tx_cmd.len) +
6467 scan->channel_count * sizeof(struct iwl3945_scan_channel);
6468 cmd.data = scan;
6469 scan->len = cpu_to_le16(cmd.len);
6470
6471 set_bit(STATUS_SCAN_HW, &priv->status);
6472 rc = iwl3945_send_cmd_sync(priv, &cmd);
6473 if (rc)
6474 goto done;
6475
6476 queue_delayed_work(priv->workqueue, &priv->scan_check,
6477 IWL_SCAN_CHECK_WATCHDOG);
6478
6479 mutex_unlock(&priv->mutex);
6480 return;
6481
6482 done:
6483 /* inform mac80211 scan aborted */
6484 queue_work(priv->workqueue, &priv->scan_completed);
6485 mutex_unlock(&priv->mutex);
6486 }
6487
6488 static void iwl3945_bg_up(struct work_struct *data)
6489 {
6490 struct iwl3945_priv *priv = container_of(data, struct iwl3945_priv, up);
6491
6492 if (test_bit(STATUS_EXIT_PENDING, &priv->status))
6493 return;
6494
6495 mutex_lock(&priv->mutex);
6496 __iwl3945_up(priv);
6497 mutex_unlock(&priv->mutex);
6498 }
6499
6500 static void iwl3945_bg_restart(struct work_struct *data)
6501 {
6502 struct iwl3945_priv *priv = container_of(data, struct iwl3945_priv, restart);
6503
6504 if (test_bit(STATUS_EXIT_PENDING, &priv->status))
6505 return;
6506
6507 iwl3945_down(priv);
6508 queue_work(priv->workqueue, &priv->up);
6509 }
6510
6511 static void iwl3945_bg_rx_replenish(struct work_struct *data)
6512 {
6513 struct iwl3945_priv *priv =
6514 container_of(data, struct iwl3945_priv, rx_replenish);
6515
6516 if (test_bit(STATUS_EXIT_PENDING, &priv->status))
6517 return;
6518
6519 mutex_lock(&priv->mutex);
6520 iwl3945_rx_replenish(priv);
6521 mutex_unlock(&priv->mutex);
6522 }
6523
6524 #define IWL_DELAY_NEXT_SCAN (HZ*2)
6525
6526 static void iwl3945_bg_post_associate(struct work_struct *data)
6527 {
6528 struct iwl3945_priv *priv = container_of(data, struct iwl3945_priv,
6529 post_associate.work);
6530
6531 int rc = 0;
6532 struct ieee80211_conf *conf = NULL;
6533 DECLARE_MAC_BUF(mac);
6534
6535 if (priv->iw_mode == IEEE80211_IF_TYPE_AP) {
6536 IWL_ERROR("%s Should not be called in AP mode\n", __FUNCTION__);
6537 return;
6538 }
6539
6540
6541 IWL_DEBUG_ASSOC("Associated as %d to: %s\n",
6542 priv->assoc_id,
6543 print_mac(mac, priv->active_rxon.bssid_addr));
6544
6545 if (test_bit(STATUS_EXIT_PENDING, &priv->status))
6546 return;
6547
6548 mutex_lock(&priv->mutex);
6549
6550 if (!priv->vif || !priv->is_open) {
6551 mutex_unlock(&priv->mutex);
6552 return;
6553 }
6554 iwl3945_scan_cancel_timeout(priv, 200);
6555
6556 conf = ieee80211_get_hw_conf(priv->hw);
6557
6558 priv->staging_rxon.filter_flags &= ~RXON_FILTER_ASSOC_MSK;
6559 iwl3945_commit_rxon(priv);
6560
6561 memset(&priv->rxon_timing, 0, sizeof(struct iwl3945_rxon_time_cmd));
6562 iwl3945_setup_rxon_timing(priv);
6563 rc = iwl3945_send_cmd_pdu(priv, REPLY_RXON_TIMING,
6564 sizeof(priv->rxon_timing), &priv->rxon_timing);
6565 if (rc)
6566 IWL_WARNING("REPLY_RXON_TIMING failed - "
6567 "Attempting to continue.\n");
6568
6569 priv->staging_rxon.filter_flags |= RXON_FILTER_ASSOC_MSK;
6570
6571 priv->staging_rxon.assoc_id = cpu_to_le16(priv->assoc_id);
6572
6573 IWL_DEBUG_ASSOC("assoc id %d beacon interval %d\n",
6574 priv->assoc_id, priv->beacon_int);
6575
6576 if (priv->assoc_capability & WLAN_CAPABILITY_SHORT_PREAMBLE)
6577 priv->staging_rxon.flags |= RXON_FLG_SHORT_PREAMBLE_MSK;
6578 else
6579 priv->staging_rxon.flags &= ~RXON_FLG_SHORT_PREAMBLE_MSK;
6580
6581 if (priv->staging_rxon.flags & RXON_FLG_BAND_24G_MSK) {
6582 if (priv->assoc_capability & WLAN_CAPABILITY_SHORT_SLOT_TIME)
6583 priv->staging_rxon.flags |= RXON_FLG_SHORT_SLOT_MSK;
6584 else
6585 priv->staging_rxon.flags &= ~RXON_FLG_SHORT_SLOT_MSK;
6586
6587 if (priv->iw_mode == IEEE80211_IF_TYPE_IBSS)
6588 priv->staging_rxon.flags &= ~RXON_FLG_SHORT_SLOT_MSK;
6589
6590 }
6591
6592 iwl3945_commit_rxon(priv);
6593
6594 switch (priv->iw_mode) {
6595 case IEEE80211_IF_TYPE_STA:
6596 iwl3945_rate_scale_init(priv->hw, IWL_AP_ID);
6597 break;
6598
6599 case IEEE80211_IF_TYPE_IBSS:
6600
6601 /* clear out the station table */
6602 iwl3945_clear_stations_table(priv);
6603
6604 iwl3945_add_station(priv, iwl3945_broadcast_addr, 0, 0);
6605 iwl3945_add_station(priv, priv->bssid, 0, 0);
6606 iwl3945_sync_sta(priv, IWL_STA_ID,
6607 (priv->band == IEEE80211_BAND_5GHZ) ?
6608 IWL_RATE_6M_PLCP : IWL_RATE_1M_PLCP,
6609 CMD_ASYNC);
6610 iwl3945_rate_scale_init(priv->hw, IWL_STA_ID);
6611 iwl3945_send_beacon_cmd(priv);
6612
6613 break;
6614
6615 default:
6616 IWL_ERROR("%s Should not be called in %d mode\n",
6617 __FUNCTION__, priv->iw_mode);
6618 break;
6619 }
6620
6621 iwl3945_sequence_reset(priv);
6622
6623 iwl3945_activate_qos(priv, 0);
6624
6625 /* we have just associated, don't start scan too early */
6626 priv->next_scan_jiffies = jiffies + IWL_DELAY_NEXT_SCAN;
6627 mutex_unlock(&priv->mutex);
6628 }
6629
6630 static void iwl3945_bg_abort_scan(struct work_struct *work)
6631 {
6632 struct iwl3945_priv *priv = container_of(work, struct iwl3945_priv, abort_scan);
6633
6634 if (!iwl3945_is_ready(priv))
6635 return;
6636
6637 mutex_lock(&priv->mutex);
6638
6639 set_bit(STATUS_SCAN_ABORTING, &priv->status);
6640 iwl3945_send_scan_abort(priv);
6641
6642 mutex_unlock(&priv->mutex);
6643 }
6644
6645 static int iwl3945_mac_config(struct ieee80211_hw *hw, struct ieee80211_conf *conf);
6646
6647 static void iwl3945_bg_scan_completed(struct work_struct *work)
6648 {
6649 struct iwl3945_priv *priv =
6650 container_of(work, struct iwl3945_priv, scan_completed);
6651
6652 IWL_DEBUG(IWL_DL_INFO | IWL_DL_SCAN, "SCAN complete scan\n");
6653
6654 if (test_bit(STATUS_EXIT_PENDING, &priv->status))
6655 return;
6656
6657 if (test_bit(STATUS_CONF_PENDING, &priv->status))
6658 iwl3945_mac_config(priv->hw, ieee80211_get_hw_conf(priv->hw));
6659
6660 ieee80211_scan_completed(priv->hw);
6661
6662 /* Since setting the TXPOWER may have been deferred while
6663 * performing the scan, fire one off */
6664 mutex_lock(&priv->mutex);
6665 iwl3945_hw_reg_send_txpower(priv);
6666 mutex_unlock(&priv->mutex);
6667 }
6668
6669 /*****************************************************************************
6670 *
6671 * mac80211 entry point functions
6672 *
6673 *****************************************************************************/
6674
6675 #define UCODE_READY_TIMEOUT (2 * HZ)
6676
6677 static int iwl3945_mac_start(struct ieee80211_hw *hw)
6678 {
6679 struct iwl3945_priv *priv = hw->priv;
6680 int ret;
6681
6682 IWL_DEBUG_MAC80211("enter\n");
6683
6684 if (pci_enable_device(priv->pci_dev)) {
6685 IWL_ERROR("Fail to pci_enable_device\n");
6686 return -ENODEV;
6687 }
6688 pci_restore_state(priv->pci_dev);
6689 pci_enable_msi(priv->pci_dev);
6690
6691 ret = request_irq(priv->pci_dev->irq, iwl3945_isr, IRQF_SHARED,
6692 DRV_NAME, priv);
6693 if (ret) {
6694 IWL_ERROR("Error allocating IRQ %d\n", priv->pci_dev->irq);
6695 goto out_disable_msi;
6696 }
6697
6698 /* we should be verifying the device is ready to be opened */
6699 mutex_lock(&priv->mutex);
6700
6701 memset(&priv->staging_rxon, 0, sizeof(struct iwl3945_rxon_cmd));
6702 /* fetch ucode file from disk, alloc and copy to bus-master buffers ...
6703 * ucode filename and max sizes are card-specific. */
6704
6705 if (!priv->ucode_code.len) {
6706 ret = iwl3945_read_ucode(priv);
6707 if (ret) {
6708 IWL_ERROR("Could not read microcode: %d\n", ret);
6709 mutex_unlock(&priv->mutex);
6710 goto out_release_irq;
6711 }
6712 }
6713
6714 ret = __iwl3945_up(priv);
6715
6716 mutex_unlock(&priv->mutex);
6717
6718 if (ret)
6719 goto out_release_irq;
6720
6721 IWL_DEBUG_INFO("Start UP work.\n");
6722
6723 if (test_bit(STATUS_IN_SUSPEND, &priv->status))
6724 return 0;
6725
6726 /* Wait for START_ALIVE from ucode. Otherwise callbacks from
6727 * mac80211 will not be run successfully. */
6728 ret = wait_event_interruptible_timeout(priv->wait_command_queue,
6729 test_bit(STATUS_READY, &priv->status),
6730 UCODE_READY_TIMEOUT);
6731 if (!ret) {
6732 if (!test_bit(STATUS_READY, &priv->status)) {
6733 IWL_ERROR("Wait for START_ALIVE timeout after %dms.\n",
6734 jiffies_to_msecs(UCODE_READY_TIMEOUT));
6735 ret = -ETIMEDOUT;
6736 goto out_release_irq;
6737 }
6738 }
6739
6740 priv->is_open = 1;
6741 IWL_DEBUG_MAC80211("leave\n");
6742 return 0;
6743
6744 out_release_irq:
6745 free_irq(priv->pci_dev->irq, priv);
6746 out_disable_msi:
6747 pci_disable_msi(priv->pci_dev);
6748 pci_disable_device(priv->pci_dev);
6749 priv->is_open = 0;
6750 IWL_DEBUG_MAC80211("leave - failed\n");
6751 return ret;
6752 }
6753
6754 static void iwl3945_mac_stop(struct ieee80211_hw *hw)
6755 {
6756 struct iwl3945_priv *priv = hw->priv;
6757
6758 IWL_DEBUG_MAC80211("enter\n");
6759
6760 if (!priv->is_open) {
6761 IWL_DEBUG_MAC80211("leave - skip\n");
6762 return;
6763 }
6764
6765 priv->is_open = 0;
6766
6767 if (iwl3945_is_ready_rf(priv)) {
6768 /* stop mac, cancel any scan request and clear
6769 * RXON_FILTER_ASSOC_MSK BIT
6770 */
6771 mutex_lock(&priv->mutex);
6772 iwl3945_scan_cancel_timeout(priv, 100);
6773 cancel_delayed_work(&priv->post_associate);
6774 mutex_unlock(&priv->mutex);
6775 }
6776
6777 iwl3945_down(priv);
6778
6779 flush_workqueue(priv->workqueue);
6780 free_irq(priv->pci_dev->irq, priv);
6781 pci_disable_msi(priv->pci_dev);
6782 pci_save_state(priv->pci_dev);
6783 pci_disable_device(priv->pci_dev);
6784
6785 IWL_DEBUG_MAC80211("leave\n");
6786 }
6787
6788 static int iwl3945_mac_tx(struct ieee80211_hw *hw, struct sk_buff *skb,
6789 struct ieee80211_tx_control *ctl)
6790 {
6791 struct iwl3945_priv *priv = hw->priv;
6792
6793 IWL_DEBUG_MAC80211("enter\n");
6794
6795 if (priv->iw_mode == IEEE80211_IF_TYPE_MNTR) {
6796 IWL_DEBUG_MAC80211("leave - monitor\n");
6797 return -1;
6798 }
6799
6800 IWL_DEBUG_TX("dev->xmit(%d bytes) at rate 0x%02x\n", skb->len,
6801 ctl->tx_rate->bitrate);
6802
6803 if (iwl3945_tx_skb(priv, skb, ctl))
6804 dev_kfree_skb_any(skb);
6805
6806 IWL_DEBUG_MAC80211("leave\n");
6807 return 0;
6808 }
6809
6810 static int iwl3945_mac_add_interface(struct ieee80211_hw *hw,
6811 struct ieee80211_if_init_conf *conf)
6812 {
6813 struct iwl3945_priv *priv = hw->priv;
6814 unsigned long flags;
6815 DECLARE_MAC_BUF(mac);
6816
6817 IWL_DEBUG_MAC80211("enter: type %d\n", conf->type);
6818
6819 if (priv->vif) {
6820 IWL_DEBUG_MAC80211("leave - vif != NULL\n");
6821 return -EOPNOTSUPP;
6822 }
6823
6824 spin_lock_irqsave(&priv->lock, flags);
6825 priv->vif = conf->vif;
6826
6827 spin_unlock_irqrestore(&priv->lock, flags);
6828
6829 mutex_lock(&priv->mutex);
6830
6831 if (conf->mac_addr) {
6832 IWL_DEBUG_MAC80211("Set: %s\n", print_mac(mac, conf->mac_addr));
6833 memcpy(priv->mac_addr, conf->mac_addr, ETH_ALEN);
6834 }
6835
6836 if (iwl3945_is_ready(priv))
6837 iwl3945_set_mode(priv, conf->type);
6838
6839 mutex_unlock(&priv->mutex);
6840
6841 IWL_DEBUG_MAC80211("leave\n");
6842 return 0;
6843 }
6844
6845 /**
6846 * iwl3945_mac_config - mac80211 config callback
6847 *
6848 * We ignore conf->flags & IEEE80211_CONF_SHORT_SLOT_TIME since it seems to
6849 * be set inappropriately and the driver currently sets the hardware up to
6850 * use it whenever needed.
6851 */
6852 static int iwl3945_mac_config(struct ieee80211_hw *hw, struct ieee80211_conf *conf)
6853 {
6854 struct iwl3945_priv *priv = hw->priv;
6855 const struct iwl3945_channel_info *ch_info;
6856 unsigned long flags;
6857 int ret = 0;
6858
6859 mutex_lock(&priv->mutex);
6860 IWL_DEBUG_MAC80211("enter to channel %d\n", conf->channel->hw_value);
6861
6862 priv->add_radiotap = !!(conf->flags & IEEE80211_CONF_RADIOTAP);
6863
6864 if (!iwl3945_is_ready(priv)) {
6865 IWL_DEBUG_MAC80211("leave - not ready\n");
6866 ret = -EIO;
6867 goto out;
6868 }
6869
6870 if (unlikely(!iwl3945_param_disable_hw_scan &&
6871 test_bit(STATUS_SCANNING, &priv->status))) {
6872 IWL_DEBUG_MAC80211("leave - scanning\n");
6873 set_bit(STATUS_CONF_PENDING, &priv->status);
6874 mutex_unlock(&priv->mutex);
6875 return 0;
6876 }
6877
6878 spin_lock_irqsave(&priv->lock, flags);
6879
6880 ch_info = iwl3945_get_channel_info(priv, conf->channel->band,
6881 conf->channel->hw_value);
6882 if (!is_channel_valid(ch_info)) {
6883 IWL_DEBUG_SCAN("Channel %d [%d] is INVALID for this SKU.\n",
6884 conf->channel->hw_value, conf->channel->band);
6885 IWL_DEBUG_MAC80211("leave - invalid channel\n");
6886 spin_unlock_irqrestore(&priv->lock, flags);
6887 ret = -EINVAL;
6888 goto out;
6889 }
6890
6891 iwl3945_set_rxon_channel(priv, conf->channel->band, conf->channel->hw_value);
6892
6893 iwl3945_set_flags_for_phymode(priv, conf->channel->band);
6894
6895 /* The list of supported rates and rate mask can be different
6896 * for each phymode; since the phymode may have changed, reset
6897 * the rate mask to what mac80211 lists */
6898 iwl3945_set_rate(priv);
6899
6900 spin_unlock_irqrestore(&priv->lock, flags);
6901
6902 #ifdef IEEE80211_CONF_CHANNEL_SWITCH
6903 if (conf->flags & IEEE80211_CONF_CHANNEL_SWITCH) {
6904 iwl3945_hw_channel_switch(priv, conf->channel);
6905 goto out;
6906 }
6907 #endif
6908
6909 iwl3945_radio_kill_sw(priv, !conf->radio_enabled);
6910
6911 if (!conf->radio_enabled) {
6912 IWL_DEBUG_MAC80211("leave - radio disabled\n");
6913 goto out;
6914 }
6915
6916 if (iwl3945_is_rfkill(priv)) {
6917 IWL_DEBUG_MAC80211("leave - RF kill\n");
6918 ret = -EIO;
6919 goto out;
6920 }
6921
6922 iwl3945_set_rate(priv);
6923
6924 if (memcmp(&priv->active_rxon,
6925 &priv->staging_rxon, sizeof(priv->staging_rxon)))
6926 iwl3945_commit_rxon(priv);
6927 else
6928 IWL_DEBUG_INFO("No re-sending same RXON configuration.\n");
6929
6930 IWL_DEBUG_MAC80211("leave\n");
6931
6932 out:
6933 clear_bit(STATUS_CONF_PENDING, &priv->status);
6934 mutex_unlock(&priv->mutex);
6935 return ret;
6936 }
6937
6938 static void iwl3945_config_ap(struct iwl3945_priv *priv)
6939 {
6940 int rc = 0;
6941
6942 if (test_bit(STATUS_EXIT_PENDING, &priv->status))
6943 return;
6944
6945 /* The following should be done only at AP bring up */
6946 if ((priv->active_rxon.filter_flags & RXON_FILTER_ASSOC_MSK) == 0) {
6947
6948 /* RXON - unassoc (to set timing command) */
6949 priv->staging_rxon.filter_flags &= ~RXON_FILTER_ASSOC_MSK;
6950 iwl3945_commit_rxon(priv);
6951
6952 /* RXON Timing */
6953 memset(&priv->rxon_timing, 0, sizeof(struct iwl3945_rxon_time_cmd));
6954 iwl3945_setup_rxon_timing(priv);
6955 rc = iwl3945_send_cmd_pdu(priv, REPLY_RXON_TIMING,
6956 sizeof(priv->rxon_timing), &priv->rxon_timing);
6957 if (rc)
6958 IWL_WARNING("REPLY_RXON_TIMING failed - "
6959 "Attempting to continue.\n");
6960
6961 /* FIXME: what should be the assoc_id for AP? */
6962 priv->staging_rxon.assoc_id = cpu_to_le16(priv->assoc_id);
6963 if (priv->assoc_capability & WLAN_CAPABILITY_SHORT_PREAMBLE)
6964 priv->staging_rxon.flags |=
6965 RXON_FLG_SHORT_PREAMBLE_MSK;
6966 else
6967 priv->staging_rxon.flags &=
6968 ~RXON_FLG_SHORT_PREAMBLE_MSK;
6969
6970 if (priv->staging_rxon.flags & RXON_FLG_BAND_24G_MSK) {
6971 if (priv->assoc_capability &
6972 WLAN_CAPABILITY_SHORT_SLOT_TIME)
6973 priv->staging_rxon.flags |=
6974 RXON_FLG_SHORT_SLOT_MSK;
6975 else
6976 priv->staging_rxon.flags &=
6977 ~RXON_FLG_SHORT_SLOT_MSK;
6978
6979 if (priv->iw_mode == IEEE80211_IF_TYPE_IBSS)
6980 priv->staging_rxon.flags &=
6981 ~RXON_FLG_SHORT_SLOT_MSK;
6982 }
6983 /* restore RXON assoc */
6984 priv->staging_rxon.filter_flags |= RXON_FILTER_ASSOC_MSK;
6985 iwl3945_commit_rxon(priv);
6986 iwl3945_add_station(priv, iwl3945_broadcast_addr, 0, 0);
6987 }
6988 iwl3945_send_beacon_cmd(priv);
6989
6990 /* FIXME - we need to add code here to detect a totally new
6991 * configuration, reset the AP, unassoc, rxon timing, assoc,
6992 * clear sta table, add BCAST sta... */
6993 }
6994
6995 static int iwl3945_mac_config_interface(struct ieee80211_hw *hw,
6996 struct ieee80211_vif *vif,
6997 struct ieee80211_if_conf *conf)
6998 {
6999 struct iwl3945_priv *priv = hw->priv;
7000 DECLARE_MAC_BUF(mac);
7001 unsigned long flags;
7002 int rc;
7003
7004 if (conf == NULL)
7005 return -EIO;
7006
7007 if (priv->vif != vif) {
7008 IWL_DEBUG_MAC80211("leave - priv->vif != vif\n");
7009 mutex_unlock(&priv->mutex);
7010 return 0;
7011 }
7012
7013 /* XXX: this MUST use conf->mac_addr */
7014
7015 if ((priv->iw_mode == IEEE80211_IF_TYPE_AP) &&
7016 (!conf->beacon || !conf->ssid_len)) {
7017 IWL_DEBUG_MAC80211
7018 ("Leaving in AP mode because HostAPD is not ready.\n");
7019 return 0;
7020 }
7021
7022 if (!iwl3945_is_alive(priv))
7023 return -EAGAIN;
7024
7025 mutex_lock(&priv->mutex);
7026
7027 if (conf->bssid)
7028 IWL_DEBUG_MAC80211("bssid: %s\n",
7029 print_mac(mac, conf->bssid));
7030
7031 /*
7032 * very dubious code was here; the probe filtering flag is never set:
7033 *
7034 if (unlikely(test_bit(STATUS_SCANNING, &priv->status)) &&
7035 !(priv->hw->flags & IEEE80211_HW_NO_PROBE_FILTERING)) {
7036 */
7037
7038 if (priv->iw_mode == IEEE80211_IF_TYPE_AP) {
7039 if (!conf->bssid) {
7040 conf->bssid = priv->mac_addr;
7041 memcpy(priv->bssid, priv->mac_addr, ETH_ALEN);
7042 IWL_DEBUG_MAC80211("bssid was set to: %s\n",
7043 print_mac(mac, conf->bssid));
7044 }
7045 if (priv->ibss_beacon)
7046 dev_kfree_skb(priv->ibss_beacon);
7047
7048 priv->ibss_beacon = conf->beacon;
7049 }
7050
7051 if (iwl3945_is_rfkill(priv))
7052 goto done;
7053
7054 if (conf->bssid && !is_zero_ether_addr(conf->bssid) &&
7055 !is_multicast_ether_addr(conf->bssid)) {
7056 /* If there is currently a HW scan going on in the background
7057 * then we need to cancel it else the RXON below will fail. */
7058 if (iwl3945_scan_cancel_timeout(priv, 100)) {
7059 IWL_WARNING("Aborted scan still in progress "
7060 "after 100ms\n");
7061 IWL_DEBUG_MAC80211("leaving - scan abort failed.\n");
7062 mutex_unlock(&priv->mutex);
7063 return -EAGAIN;
7064 }
7065 memcpy(priv->staging_rxon.bssid_addr, conf->bssid, ETH_ALEN);
7066
7067 /* TODO: Audit driver for usage of these members and see
7068 * if mac80211 deprecates them (priv->bssid looks like it
7069 * shouldn't be there, but I haven't scanned the IBSS code
7070 * to verify) - jpk */
7071 memcpy(priv->bssid, conf->bssid, ETH_ALEN);
7072
7073 if (priv->iw_mode == IEEE80211_IF_TYPE_AP)
7074 iwl3945_config_ap(priv);
7075 else {
7076 rc = iwl3945_commit_rxon(priv);
7077 if ((priv->iw_mode == IEEE80211_IF_TYPE_STA) && rc)
7078 iwl3945_add_station(priv,
7079 priv->active_rxon.bssid_addr, 1, 0);
7080 }
7081
7082 } else {
7083 iwl3945_scan_cancel_timeout(priv, 100);
7084 priv->staging_rxon.filter_flags &= ~RXON_FILTER_ASSOC_MSK;
7085 iwl3945_commit_rxon(priv);
7086 }
7087
7088 done:
7089 spin_lock_irqsave(&priv->lock, flags);
7090 if (!conf->ssid_len)
7091 memset(priv->essid, 0, IW_ESSID_MAX_SIZE);
7092 else
7093 memcpy(priv->essid, conf->ssid, conf->ssid_len);
7094
7095 priv->essid_len = conf->ssid_len;
7096 spin_unlock_irqrestore(&priv->lock, flags);
7097
7098 IWL_DEBUG_MAC80211("leave\n");
7099 mutex_unlock(&priv->mutex);
7100
7101 return 0;
7102 }
7103
7104 static void iwl3945_configure_filter(struct ieee80211_hw *hw,
7105 unsigned int changed_flags,
7106 unsigned int *total_flags,
7107 int mc_count, struct dev_addr_list *mc_list)
7108 {
7109 /*
7110 * XXX: dummy
7111 * see also iwl3945_connection_init_rx_config
7112 */
7113 *total_flags = 0;
7114 }
7115
7116 static void iwl3945_mac_remove_interface(struct ieee80211_hw *hw,
7117 struct ieee80211_if_init_conf *conf)
7118 {
7119 struct iwl3945_priv *priv = hw->priv;
7120
7121 IWL_DEBUG_MAC80211("enter\n");
7122
7123 mutex_lock(&priv->mutex);
7124
7125 if (iwl3945_is_ready_rf(priv)) {
7126 iwl3945_scan_cancel_timeout(priv, 100);
7127 cancel_delayed_work(&priv->post_associate);
7128 priv->staging_rxon.filter_flags &= ~RXON_FILTER_ASSOC_MSK;
7129 iwl3945_commit_rxon(priv);
7130 }
7131 if (priv->vif == conf->vif) {
7132 priv->vif = NULL;
7133 memset(priv->bssid, 0, ETH_ALEN);
7134 memset(priv->essid, 0, IW_ESSID_MAX_SIZE);
7135 priv->essid_len = 0;
7136 }
7137 mutex_unlock(&priv->mutex);
7138
7139 IWL_DEBUG_MAC80211("leave\n");
7140 }
7141
7142 static int iwl3945_mac_hw_scan(struct ieee80211_hw *hw, u8 *ssid, size_t len)
7143 {
7144 int rc = 0;
7145 unsigned long flags;
7146 struct iwl3945_priv *priv = hw->priv;
7147
7148 IWL_DEBUG_MAC80211("enter\n");
7149
7150 mutex_lock(&priv->mutex);
7151 spin_lock_irqsave(&priv->lock, flags);
7152
7153 if (!iwl3945_is_ready_rf(priv)) {
7154 rc = -EIO;
7155 IWL_DEBUG_MAC80211("leave - not ready or exit pending\n");
7156 goto out_unlock;
7157 }
7158
7159 if (priv->iw_mode == IEEE80211_IF_TYPE_AP) { /* APs don't scan */
7160 rc = -EIO;
7161 IWL_ERROR("ERROR: APs don't scan\n");
7162 goto out_unlock;
7163 }
7164
7165 /* we don't schedule scan within next_scan_jiffies period */
7166 if (priv->next_scan_jiffies &&
7167 time_after(priv->next_scan_jiffies, jiffies)) {
7168 rc = -EAGAIN;
7169 goto out_unlock;
7170 }
7171 /* if we just finished scan ask for delay */
7172 if (priv->last_scan_jiffies && time_after(priv->last_scan_jiffies +
7173 IWL_DELAY_NEXT_SCAN, jiffies)) {
7174 rc = -EAGAIN;
7175 goto out_unlock;
7176 }
7177 if (len) {
7178 IWL_DEBUG_SCAN("direct scan for %s [%d]\n ",
7179 iwl3945_escape_essid(ssid, len), (int)len);
7180
7181 priv->one_direct_scan = 1;
7182 priv->direct_ssid_len = (u8)
7183 min((u8) len, (u8) IW_ESSID_MAX_SIZE);
7184 memcpy(priv->direct_ssid, ssid, priv->direct_ssid_len);
7185 } else
7186 priv->one_direct_scan = 0;
7187
7188 rc = iwl3945_scan_initiate(priv);
7189
7190 IWL_DEBUG_MAC80211("leave\n");
7191
7192 out_unlock:
7193 spin_unlock_irqrestore(&priv->lock, flags);
7194 mutex_unlock(&priv->mutex);
7195
7196 return rc;
7197 }
7198
7199 static int iwl3945_mac_set_key(struct ieee80211_hw *hw, enum set_key_cmd cmd,
7200 const u8 *local_addr, const u8 *addr,
7201 struct ieee80211_key_conf *key)
7202 {
7203 struct iwl3945_priv *priv = hw->priv;
7204 int rc = 0;
7205 u8 sta_id;
7206
7207 IWL_DEBUG_MAC80211("enter\n");
7208
7209 if (!iwl3945_param_hwcrypto) {
7210 IWL_DEBUG_MAC80211("leave - hwcrypto disabled\n");
7211 return -EOPNOTSUPP;
7212 }
7213
7214 if (is_zero_ether_addr(addr))
7215 /* only support pairwise keys */
7216 return -EOPNOTSUPP;
7217
7218 sta_id = iwl3945_hw_find_station(priv, addr);
7219 if (sta_id == IWL_INVALID_STATION) {
7220 DECLARE_MAC_BUF(mac);
7221
7222 IWL_DEBUG_MAC80211("leave - %s not in station map.\n",
7223 print_mac(mac, addr));
7224 return -EINVAL;
7225 }
7226
7227 mutex_lock(&priv->mutex);
7228
7229 iwl3945_scan_cancel_timeout(priv, 100);
7230
7231 switch (cmd) {
7232 case SET_KEY:
7233 rc = iwl3945_update_sta_key_info(priv, key, sta_id);
7234 if (!rc) {
7235 iwl3945_set_rxon_hwcrypto(priv, 1);
7236 iwl3945_commit_rxon(priv);
7237 key->hw_key_idx = sta_id;
7238 IWL_DEBUG_MAC80211("set_key success, using hwcrypto\n");
7239 key->flags |= IEEE80211_KEY_FLAG_GENERATE_IV;
7240 }
7241 break;
7242 case DISABLE_KEY:
7243 rc = iwl3945_clear_sta_key_info(priv, sta_id);
7244 if (!rc) {
7245 iwl3945_set_rxon_hwcrypto(priv, 0);
7246 iwl3945_commit_rxon(priv);
7247 IWL_DEBUG_MAC80211("disable hwcrypto key\n");
7248 }
7249 break;
7250 default:
7251 rc = -EINVAL;
7252 }
7253
7254 IWL_DEBUG_MAC80211("leave\n");
7255 mutex_unlock(&priv->mutex);
7256
7257 return rc;
7258 }
7259
7260 static int iwl3945_mac_conf_tx(struct ieee80211_hw *hw, int queue,
7261 const struct ieee80211_tx_queue_params *params)
7262 {
7263 struct iwl3945_priv *priv = hw->priv;
7264 unsigned long flags;
7265 int q;
7266
7267 IWL_DEBUG_MAC80211("enter\n");
7268
7269 if (!iwl3945_is_ready_rf(priv)) {
7270 IWL_DEBUG_MAC80211("leave - RF not ready\n");
7271 return -EIO;
7272 }
7273
7274 if (queue >= AC_NUM) {
7275 IWL_DEBUG_MAC80211("leave - queue >= AC_NUM %d\n", queue);
7276 return 0;
7277 }
7278
7279 if (!priv->qos_data.qos_enable) {
7280 priv->qos_data.qos_active = 0;
7281 IWL_DEBUG_MAC80211("leave - qos not enabled\n");
7282 return 0;
7283 }
7284 q = AC_NUM - 1 - queue;
7285
7286 spin_lock_irqsave(&priv->lock, flags);
7287
7288 priv->qos_data.def_qos_parm.ac[q].cw_min = cpu_to_le16(params->cw_min);
7289 priv->qos_data.def_qos_parm.ac[q].cw_max = cpu_to_le16(params->cw_max);
7290 priv->qos_data.def_qos_parm.ac[q].aifsn = params->aifs;
7291 priv->qos_data.def_qos_parm.ac[q].edca_txop =
7292 cpu_to_le16((params->txop * 32));
7293
7294 priv->qos_data.def_qos_parm.ac[q].reserved1 = 0;
7295 priv->qos_data.qos_active = 1;
7296
7297 spin_unlock_irqrestore(&priv->lock, flags);
7298
7299 mutex_lock(&priv->mutex);
7300 if (priv->iw_mode == IEEE80211_IF_TYPE_AP)
7301 iwl3945_activate_qos(priv, 1);
7302 else if (priv->assoc_id && iwl3945_is_associated(priv))
7303 iwl3945_activate_qos(priv, 0);
7304
7305 mutex_unlock(&priv->mutex);
7306
7307 IWL_DEBUG_MAC80211("leave\n");
7308 return 0;
7309 }
7310
7311 static int iwl3945_mac_get_tx_stats(struct ieee80211_hw *hw,
7312 struct ieee80211_tx_queue_stats *stats)
7313 {
7314 struct iwl3945_priv *priv = hw->priv;
7315 int i, avail;
7316 struct iwl3945_tx_queue *txq;
7317 struct iwl3945_queue *q;
7318 unsigned long flags;
7319
7320 IWL_DEBUG_MAC80211("enter\n");
7321
7322 if (!iwl3945_is_ready_rf(priv)) {
7323 IWL_DEBUG_MAC80211("leave - RF not ready\n");
7324 return -EIO;
7325 }
7326
7327 spin_lock_irqsave(&priv->lock, flags);
7328
7329 for (i = 0; i < AC_NUM; i++) {
7330 txq = &priv->txq[i];
7331 q = &txq->q;
7332 avail = iwl3945_queue_space(q);
7333
7334 stats->data[i].len = q->n_window - avail;
7335 stats->data[i].limit = q->n_window - q->high_mark;
7336 stats->data[i].count = q->n_window;
7337
7338 }
7339 spin_unlock_irqrestore(&priv->lock, flags);
7340
7341 IWL_DEBUG_MAC80211("leave\n");
7342
7343 return 0;
7344 }
7345
7346 static int iwl3945_mac_get_stats(struct ieee80211_hw *hw,
7347 struct ieee80211_low_level_stats *stats)
7348 {
7349 IWL_DEBUG_MAC80211("enter\n");
7350 IWL_DEBUG_MAC80211("leave\n");
7351
7352 return 0;
7353 }
7354
7355 static u64 iwl3945_mac_get_tsf(struct ieee80211_hw *hw)
7356 {
7357 IWL_DEBUG_MAC80211("enter\n");
7358 IWL_DEBUG_MAC80211("leave\n");
7359
7360 return 0;
7361 }
7362
7363 static void iwl3945_mac_reset_tsf(struct ieee80211_hw *hw)
7364 {
7365 struct iwl3945_priv *priv = hw->priv;
7366 unsigned long flags;
7367
7368 mutex_lock(&priv->mutex);
7369 IWL_DEBUG_MAC80211("enter\n");
7370
7371 iwl3945_reset_qos(priv);
7372
7373 cancel_delayed_work(&priv->post_associate);
7374
7375 spin_lock_irqsave(&priv->lock, flags);
7376 priv->assoc_id = 0;
7377 priv->assoc_capability = 0;
7378 priv->call_post_assoc_from_beacon = 0;
7379
7380 /* new association get rid of ibss beacon skb */
7381 if (priv->ibss_beacon)
7382 dev_kfree_skb(priv->ibss_beacon);
7383
7384 priv->ibss_beacon = NULL;
7385
7386 priv->beacon_int = priv->hw->conf.beacon_int;
7387 priv->timestamp1 = 0;
7388 priv->timestamp0 = 0;
7389 if ((priv->iw_mode == IEEE80211_IF_TYPE_STA))
7390 priv->beacon_int = 0;
7391
7392 spin_unlock_irqrestore(&priv->lock, flags);
7393
7394 if (!iwl3945_is_ready_rf(priv)) {
7395 IWL_DEBUG_MAC80211("leave - not ready\n");
7396 mutex_unlock(&priv->mutex);
7397 return;
7398 }
7399
7400 /* we are restarting association process
7401 * clear RXON_FILTER_ASSOC_MSK bit
7402 */
7403 if (priv->iw_mode != IEEE80211_IF_TYPE_AP) {
7404 iwl3945_scan_cancel_timeout(priv, 100);
7405 priv->staging_rxon.filter_flags &= ~RXON_FILTER_ASSOC_MSK;
7406 iwl3945_commit_rxon(priv);
7407 }
7408
7409 /* Per mac80211.h: This is only used in IBSS mode... */
7410 if (priv->iw_mode != IEEE80211_IF_TYPE_IBSS) {
7411
7412 IWL_DEBUG_MAC80211("leave - not in IBSS\n");
7413 mutex_unlock(&priv->mutex);
7414 return;
7415 }
7416
7417 priv->only_active_channel = 0;
7418
7419 iwl3945_set_rate(priv);
7420
7421 mutex_unlock(&priv->mutex);
7422
7423 IWL_DEBUG_MAC80211("leave\n");
7424
7425 }
7426
7427 static int iwl3945_mac_beacon_update(struct ieee80211_hw *hw, struct sk_buff *skb,
7428 struct ieee80211_tx_control *control)
7429 {
7430 struct iwl3945_priv *priv = hw->priv;
7431 unsigned long flags;
7432
7433 mutex_lock(&priv->mutex);
7434 IWL_DEBUG_MAC80211("enter\n");
7435
7436 if (!iwl3945_is_ready_rf(priv)) {
7437 IWL_DEBUG_MAC80211("leave - RF not ready\n");
7438 mutex_unlock(&priv->mutex);
7439 return -EIO;
7440 }
7441
7442 if (priv->iw_mode != IEEE80211_IF_TYPE_IBSS) {
7443 IWL_DEBUG_MAC80211("leave - not IBSS\n");
7444 mutex_unlock(&priv->mutex);
7445 return -EIO;
7446 }
7447
7448 spin_lock_irqsave(&priv->lock, flags);
7449
7450 if (priv->ibss_beacon)
7451 dev_kfree_skb(priv->ibss_beacon);
7452
7453 priv->ibss_beacon = skb;
7454
7455 priv->assoc_id = 0;
7456
7457 IWL_DEBUG_MAC80211("leave\n");
7458 spin_unlock_irqrestore(&priv->lock, flags);
7459
7460 iwl3945_reset_qos(priv);
7461
7462 queue_work(priv->workqueue, &priv->post_associate.work);
7463
7464 mutex_unlock(&priv->mutex);
7465
7466 return 0;
7467 }
7468
7469 /*****************************************************************************
7470 *
7471 * sysfs attributes
7472 *
7473 *****************************************************************************/
7474
7475 #ifdef CONFIG_IWL3945_DEBUG
7476
7477 /*
7478 * The following adds a new attribute to the sysfs representation
7479 * of this device driver (i.e. a new file in /sys/bus/pci/drivers/iwl/)
7480 * used for controlling the debug level.
7481 *
7482 * See the level definitions in iwl for details.
7483 */
7484
7485 static ssize_t show_debug_level(struct device_driver *d, char *buf)
7486 {
7487 return sprintf(buf, "0x%08X\n", iwl3945_debug_level);
7488 }
7489 static ssize_t store_debug_level(struct device_driver *d,
7490 const char *buf, size_t count)
7491 {
7492 char *p = (char *)buf;
7493 u32 val;
7494
7495 val = simple_strtoul(p, &p, 0);
7496 if (p == buf)
7497 printk(KERN_INFO DRV_NAME
7498 ": %s is not in hex or decimal form.\n", buf);
7499 else
7500 iwl3945_debug_level = val;
7501
7502 return strnlen(buf, count);
7503 }
7504
7505 static DRIVER_ATTR(debug_level, S_IWUSR | S_IRUGO,
7506 show_debug_level, store_debug_level);
7507
7508 #endif /* CONFIG_IWL3945_DEBUG */
7509
7510 static ssize_t show_rf_kill(struct device *d,
7511 struct device_attribute *attr, char *buf)
7512 {
7513 /*
7514 * 0 - RF kill not enabled
7515 * 1 - SW based RF kill active (sysfs)
7516 * 2 - HW based RF kill active
7517 * 3 - Both HW and SW based RF kill active
7518 */
7519 struct iwl3945_priv *priv = (struct iwl3945_priv *)d->driver_data;
7520 int val = (test_bit(STATUS_RF_KILL_SW, &priv->status) ? 0x1 : 0x0) |
7521 (test_bit(STATUS_RF_KILL_HW, &priv->status) ? 0x2 : 0x0);
7522
7523 return sprintf(buf, "%i\n", val);
7524 }
7525
7526 static ssize_t store_rf_kill(struct device *d,
7527 struct device_attribute *attr,
7528 const char *buf, size_t count)
7529 {
7530 struct iwl3945_priv *priv = (struct iwl3945_priv *)d->driver_data;
7531
7532 mutex_lock(&priv->mutex);
7533 iwl3945_radio_kill_sw(priv, buf[0] == '1');
7534 mutex_unlock(&priv->mutex);
7535
7536 return count;
7537 }
7538
7539 static DEVICE_ATTR(rf_kill, S_IWUSR | S_IRUGO, show_rf_kill, store_rf_kill);
7540
7541 static ssize_t show_temperature(struct device *d,
7542 struct device_attribute *attr, char *buf)
7543 {
7544 struct iwl3945_priv *priv = (struct iwl3945_priv *)d->driver_data;
7545
7546 if (!iwl3945_is_alive(priv))
7547 return -EAGAIN;
7548
7549 return sprintf(buf, "%d\n", iwl3945_hw_get_temperature(priv));
7550 }
7551
7552 static DEVICE_ATTR(temperature, S_IRUGO, show_temperature, NULL);
7553
7554 static ssize_t show_rs_window(struct device *d,
7555 struct device_attribute *attr,
7556 char *buf)
7557 {
7558 struct iwl3945_priv *priv = d->driver_data;
7559 return iwl3945_fill_rs_info(priv->hw, buf, IWL_AP_ID);
7560 }
7561 static DEVICE_ATTR(rs_window, S_IRUGO, show_rs_window, NULL);
7562
7563 static ssize_t show_tx_power(struct device *d,
7564 struct device_attribute *attr, char *buf)
7565 {
7566 struct iwl3945_priv *priv = (struct iwl3945_priv *)d->driver_data;
7567 return sprintf(buf, "%d\n", priv->user_txpower_limit);
7568 }
7569
7570 static ssize_t store_tx_power(struct device *d,
7571 struct device_attribute *attr,
7572 const char *buf, size_t count)
7573 {
7574 struct iwl3945_priv *priv = (struct iwl3945_priv *)d->driver_data;
7575 char *p = (char *)buf;
7576 u32 val;
7577
7578 val = simple_strtoul(p, &p, 10);
7579 if (p == buf)
7580 printk(KERN_INFO DRV_NAME
7581 ": %s is not in decimal form.\n", buf);
7582 else
7583 iwl3945_hw_reg_set_txpower(priv, val);
7584
7585 return count;
7586 }
7587
7588 static DEVICE_ATTR(tx_power, S_IWUSR | S_IRUGO, show_tx_power, store_tx_power);
7589
7590 static ssize_t show_flags(struct device *d,
7591 struct device_attribute *attr, char *buf)
7592 {
7593 struct iwl3945_priv *priv = (struct iwl3945_priv *)d->driver_data;
7594
7595 return sprintf(buf, "0x%04X\n", priv->active_rxon.flags);
7596 }
7597
7598 static ssize_t store_flags(struct device *d,
7599 struct device_attribute *attr,
7600 const char *buf, size_t count)
7601 {
7602 struct iwl3945_priv *priv = (struct iwl3945_priv *)d->driver_data;
7603 u32 flags = simple_strtoul(buf, NULL, 0);
7604
7605 mutex_lock(&priv->mutex);
7606 if (le32_to_cpu(priv->staging_rxon.flags) != flags) {
7607 /* Cancel any currently running scans... */
7608 if (iwl3945_scan_cancel_timeout(priv, 100))
7609 IWL_WARNING("Could not cancel scan.\n");
7610 else {
7611 IWL_DEBUG_INFO("Committing rxon.flags = 0x%04X\n",
7612 flags);
7613 priv->staging_rxon.flags = cpu_to_le32(flags);
7614 iwl3945_commit_rxon(priv);
7615 }
7616 }
7617 mutex_unlock(&priv->mutex);
7618
7619 return count;
7620 }
7621
7622 static DEVICE_ATTR(flags, S_IWUSR | S_IRUGO, show_flags, store_flags);
7623
7624 static ssize_t show_filter_flags(struct device *d,
7625 struct device_attribute *attr, char *buf)
7626 {
7627 struct iwl3945_priv *priv = (struct iwl3945_priv *)d->driver_data;
7628
7629 return sprintf(buf, "0x%04X\n",
7630 le32_to_cpu(priv->active_rxon.filter_flags));
7631 }
7632
7633 static ssize_t store_filter_flags(struct device *d,
7634 struct device_attribute *attr,
7635 const char *buf, size_t count)
7636 {
7637 struct iwl3945_priv *priv = (struct iwl3945_priv *)d->driver_data;
7638 u32 filter_flags = simple_strtoul(buf, NULL, 0);
7639
7640 mutex_lock(&priv->mutex);
7641 if (le32_to_cpu(priv->staging_rxon.filter_flags) != filter_flags) {
7642 /* Cancel any currently running scans... */
7643 if (iwl3945_scan_cancel_timeout(priv, 100))
7644 IWL_WARNING("Could not cancel scan.\n");
7645 else {
7646 IWL_DEBUG_INFO("Committing rxon.filter_flags = "
7647 "0x%04X\n", filter_flags);
7648 priv->staging_rxon.filter_flags =
7649 cpu_to_le32(filter_flags);
7650 iwl3945_commit_rxon(priv);
7651 }
7652 }
7653 mutex_unlock(&priv->mutex);
7654
7655 return count;
7656 }
7657
7658 static DEVICE_ATTR(filter_flags, S_IWUSR | S_IRUGO, show_filter_flags,
7659 store_filter_flags);
7660
7661 #ifdef CONFIG_IWL3945_SPECTRUM_MEASUREMENT
7662
7663 static ssize_t show_measurement(struct device *d,
7664 struct device_attribute *attr, char *buf)
7665 {
7666 struct iwl3945_priv *priv = dev_get_drvdata(d);
7667 struct iwl3945_spectrum_notification measure_report;
7668 u32 size = sizeof(measure_report), len = 0, ofs = 0;
7669 u8 *data = (u8 *) & measure_report;
7670 unsigned long flags;
7671
7672 spin_lock_irqsave(&priv->lock, flags);
7673 if (!(priv->measurement_status & MEASUREMENT_READY)) {
7674 spin_unlock_irqrestore(&priv->lock, flags);
7675 return 0;
7676 }
7677 memcpy(&measure_report, &priv->measure_report, size);
7678 priv->measurement_status = 0;
7679 spin_unlock_irqrestore(&priv->lock, flags);
7680
7681 while (size && (PAGE_SIZE - len)) {
7682 hex_dump_to_buffer(data + ofs, size, 16, 1, buf + len,
7683 PAGE_SIZE - len, 1);
7684 len = strlen(buf);
7685 if (PAGE_SIZE - len)
7686 buf[len++] = '\n';
7687
7688 ofs += 16;
7689 size -= min(size, 16U);
7690 }
7691
7692 return len;
7693 }
7694
7695 static ssize_t store_measurement(struct device *d,
7696 struct device_attribute *attr,
7697 const char *buf, size_t count)
7698 {
7699 struct iwl3945_priv *priv = dev_get_drvdata(d);
7700 struct ieee80211_measurement_params params = {
7701 .channel = le16_to_cpu(priv->active_rxon.channel),
7702 .start_time = cpu_to_le64(priv->last_tsf),
7703 .duration = cpu_to_le16(1),
7704 };
7705 u8 type = IWL_MEASURE_BASIC;
7706 u8 buffer[32];
7707 u8 channel;
7708
7709 if (count) {
7710 char *p = buffer;
7711 strncpy(buffer, buf, min(sizeof(buffer), count));
7712 channel = simple_strtoul(p, NULL, 0);
7713 if (channel)
7714 params.channel = channel;
7715
7716 p = buffer;
7717 while (*p && *p != ' ')
7718 p++;
7719 if (*p)
7720 type = simple_strtoul(p + 1, NULL, 0);
7721 }
7722
7723 IWL_DEBUG_INFO("Invoking measurement of type %d on "
7724 "channel %d (for '%s')\n", type, params.channel, buf);
7725 iwl3945_get_measurement(priv, &params, type);
7726
7727 return count;
7728 }
7729
7730 static DEVICE_ATTR(measurement, S_IRUSR | S_IWUSR,
7731 show_measurement, store_measurement);
7732 #endif /* CONFIG_IWL3945_SPECTRUM_MEASUREMENT */
7733
7734 static ssize_t store_retry_rate(struct device *d,
7735 struct device_attribute *attr,
7736 const char *buf, size_t count)
7737 {
7738 struct iwl3945_priv *priv = dev_get_drvdata(d);
7739
7740 priv->retry_rate = simple_strtoul(buf, NULL, 0);
7741 if (priv->retry_rate <= 0)
7742 priv->retry_rate = 1;
7743
7744 return count;
7745 }
7746
7747 static ssize_t show_retry_rate(struct device *d,
7748 struct device_attribute *attr, char *buf)
7749 {
7750 struct iwl3945_priv *priv = dev_get_drvdata(d);
7751 return sprintf(buf, "%d", priv->retry_rate);
7752 }
7753
7754 static DEVICE_ATTR(retry_rate, S_IWUSR | S_IRUSR, show_retry_rate,
7755 store_retry_rate);
7756
7757 static ssize_t store_power_level(struct device *d,
7758 struct device_attribute *attr,
7759 const char *buf, size_t count)
7760 {
7761 struct iwl3945_priv *priv = dev_get_drvdata(d);
7762 int rc;
7763 int mode;
7764
7765 mode = simple_strtoul(buf, NULL, 0);
7766 mutex_lock(&priv->mutex);
7767
7768 if (!iwl3945_is_ready(priv)) {
7769 rc = -EAGAIN;
7770 goto out;
7771 }
7772
7773 if ((mode < 1) || (mode > IWL_POWER_LIMIT) || (mode == IWL_POWER_AC))
7774 mode = IWL_POWER_AC;
7775 else
7776 mode |= IWL_POWER_ENABLED;
7777
7778 if (mode != priv->power_mode) {
7779 rc = iwl3945_send_power_mode(priv, IWL_POWER_LEVEL(mode));
7780 if (rc) {
7781 IWL_DEBUG_MAC80211("failed setting power mode.\n");
7782 goto out;
7783 }
7784 priv->power_mode = mode;
7785 }
7786
7787 rc = count;
7788
7789 out:
7790 mutex_unlock(&priv->mutex);
7791 return rc;
7792 }
7793
7794 #define MAX_WX_STRING 80
7795
7796 /* Values are in microsecond */
7797 static const s32 timeout_duration[] = {
7798 350000,
7799 250000,
7800 75000,
7801 37000,
7802 25000,
7803 };
7804 static const s32 period_duration[] = {
7805 400000,
7806 700000,
7807 1000000,
7808 1000000,
7809 1000000
7810 };
7811
7812 static ssize_t show_power_level(struct device *d,
7813 struct device_attribute *attr, char *buf)
7814 {
7815 struct iwl3945_priv *priv = dev_get_drvdata(d);
7816 int level = IWL_POWER_LEVEL(priv->power_mode);
7817 char *p = buf;
7818
7819 p += sprintf(p, "%d ", level);
7820 switch (level) {
7821 case IWL_POWER_MODE_CAM:
7822 case IWL_POWER_AC:
7823 p += sprintf(p, "(AC)");
7824 break;
7825 case IWL_POWER_BATTERY:
7826 p += sprintf(p, "(BATTERY)");
7827 break;
7828 default:
7829 p += sprintf(p,
7830 "(Timeout %dms, Period %dms)",
7831 timeout_duration[level - 1] / 1000,
7832 period_duration[level - 1] / 1000);
7833 }
7834
7835 if (!(priv->power_mode & IWL_POWER_ENABLED))
7836 p += sprintf(p, " OFF\n");
7837 else
7838 p += sprintf(p, " \n");
7839
7840 return (p - buf + 1);
7841
7842 }
7843
7844 static DEVICE_ATTR(power_level, S_IWUSR | S_IRUSR, show_power_level,
7845 store_power_level);
7846
7847 static ssize_t show_channels(struct device *d,
7848 struct device_attribute *attr, char *buf)
7849 {
7850 /* all this shit doesn't belong into sysfs anyway */
7851 return 0;
7852 }
7853
7854 static DEVICE_ATTR(channels, S_IRUSR, show_channels, NULL);
7855
7856 static ssize_t show_statistics(struct device *d,
7857 struct device_attribute *attr, char *buf)
7858 {
7859 struct iwl3945_priv *priv = dev_get_drvdata(d);
7860 u32 size = sizeof(struct iwl3945_notif_statistics);
7861 u32 len = 0, ofs = 0;
7862 u8 *data = (u8 *) & priv->statistics;
7863 int rc = 0;
7864
7865 if (!iwl3945_is_alive(priv))
7866 return -EAGAIN;
7867
7868 mutex_lock(&priv->mutex);
7869 rc = iwl3945_send_statistics_request(priv);
7870 mutex_unlock(&priv->mutex);
7871
7872 if (rc) {
7873 len = sprintf(buf,
7874 "Error sending statistics request: 0x%08X\n", rc);
7875 return len;
7876 }
7877
7878 while (size && (PAGE_SIZE - len)) {
7879 hex_dump_to_buffer(data + ofs, size, 16, 1, buf + len,
7880 PAGE_SIZE - len, 1);
7881 len = strlen(buf);
7882 if (PAGE_SIZE - len)
7883 buf[len++] = '\n';
7884
7885 ofs += 16;
7886 size -= min(size, 16U);
7887 }
7888
7889 return len;
7890 }
7891
7892 static DEVICE_ATTR(statistics, S_IRUGO, show_statistics, NULL);
7893
7894 static ssize_t show_antenna(struct device *d,
7895 struct device_attribute *attr, char *buf)
7896 {
7897 struct iwl3945_priv *priv = dev_get_drvdata(d);
7898
7899 if (!iwl3945_is_alive(priv))
7900 return -EAGAIN;
7901
7902 return sprintf(buf, "%d\n", priv->antenna);
7903 }
7904
7905 static ssize_t store_antenna(struct device *d,
7906 struct device_attribute *attr,
7907 const char *buf, size_t count)
7908 {
7909 int ant;
7910 struct iwl3945_priv *priv = dev_get_drvdata(d);
7911
7912 if (count == 0)
7913 return 0;
7914
7915 if (sscanf(buf, "%1i", &ant) != 1) {
7916 IWL_DEBUG_INFO("not in hex or decimal form.\n");
7917 return count;
7918 }
7919
7920 if ((ant >= 0) && (ant <= 2)) {
7921 IWL_DEBUG_INFO("Setting antenna select to %d.\n", ant);
7922 priv->antenna = (enum iwl3945_antenna)ant;
7923 } else
7924 IWL_DEBUG_INFO("Bad antenna select value %d.\n", ant);
7925
7926
7927 return count;
7928 }
7929
7930 static DEVICE_ATTR(antenna, S_IWUSR | S_IRUGO, show_antenna, store_antenna);
7931
7932 static ssize_t show_status(struct device *d,
7933 struct device_attribute *attr, char *buf)
7934 {
7935 struct iwl3945_priv *priv = (struct iwl3945_priv *)d->driver_data;
7936 if (!iwl3945_is_alive(priv))
7937 return -EAGAIN;
7938 return sprintf(buf, "0x%08x\n", (int)priv->status);
7939 }
7940
7941 static DEVICE_ATTR(status, S_IRUGO, show_status, NULL);
7942
7943 static ssize_t dump_error_log(struct device *d,
7944 struct device_attribute *attr,
7945 const char *buf, size_t count)
7946 {
7947 char *p = (char *)buf;
7948
7949 if (p[0] == '1')
7950 iwl3945_dump_nic_error_log((struct iwl3945_priv *)d->driver_data);
7951
7952 return strnlen(buf, count);
7953 }
7954
7955 static DEVICE_ATTR(dump_errors, S_IWUSR, NULL, dump_error_log);
7956
7957 static ssize_t dump_event_log(struct device *d,
7958 struct device_attribute *attr,
7959 const char *buf, size_t count)
7960 {
7961 char *p = (char *)buf;
7962
7963 if (p[0] == '1')
7964 iwl3945_dump_nic_event_log((struct iwl3945_priv *)d->driver_data);
7965
7966 return strnlen(buf, count);
7967 }
7968
7969 static DEVICE_ATTR(dump_events, S_IWUSR, NULL, dump_event_log);
7970
7971 /*****************************************************************************
7972 *
7973 * driver setup and teardown
7974 *
7975 *****************************************************************************/
7976
7977 static void iwl3945_setup_deferred_work(struct iwl3945_priv *priv)
7978 {
7979 priv->workqueue = create_workqueue(DRV_NAME);
7980
7981 init_waitqueue_head(&priv->wait_command_queue);
7982
7983 INIT_WORK(&priv->up, iwl3945_bg_up);
7984 INIT_WORK(&priv->restart, iwl3945_bg_restart);
7985 INIT_WORK(&priv->rx_replenish, iwl3945_bg_rx_replenish);
7986 INIT_WORK(&priv->scan_completed, iwl3945_bg_scan_completed);
7987 INIT_WORK(&priv->request_scan, iwl3945_bg_request_scan);
7988 INIT_WORK(&priv->abort_scan, iwl3945_bg_abort_scan);
7989 INIT_WORK(&priv->rf_kill, iwl3945_bg_rf_kill);
7990 INIT_WORK(&priv->beacon_update, iwl3945_bg_beacon_update);
7991 INIT_DELAYED_WORK(&priv->post_associate, iwl3945_bg_post_associate);
7992 INIT_DELAYED_WORK(&priv->init_alive_start, iwl3945_bg_init_alive_start);
7993 INIT_DELAYED_WORK(&priv->alive_start, iwl3945_bg_alive_start);
7994 INIT_DELAYED_WORK(&priv->scan_check, iwl3945_bg_scan_check);
7995
7996 iwl3945_hw_setup_deferred_work(priv);
7997
7998 tasklet_init(&priv->irq_tasklet, (void (*)(unsigned long))
7999 iwl3945_irq_tasklet, (unsigned long)priv);
8000 }
8001
8002 static void iwl3945_cancel_deferred_work(struct iwl3945_priv *priv)
8003 {
8004 iwl3945_hw_cancel_deferred_work(priv);
8005
8006 cancel_delayed_work_sync(&priv->init_alive_start);
8007 cancel_delayed_work(&priv->scan_check);
8008 cancel_delayed_work(&priv->alive_start);
8009 cancel_delayed_work(&priv->post_associate);
8010 cancel_work_sync(&priv->beacon_update);
8011 }
8012
8013 static struct attribute *iwl3945_sysfs_entries[] = {
8014 &dev_attr_antenna.attr,
8015 &dev_attr_channels.attr,
8016 &dev_attr_dump_errors.attr,
8017 &dev_attr_dump_events.attr,
8018 &dev_attr_flags.attr,
8019 &dev_attr_filter_flags.attr,
8020 #ifdef CONFIG_IWL3945_SPECTRUM_MEASUREMENT
8021 &dev_attr_measurement.attr,
8022 #endif
8023 &dev_attr_power_level.attr,
8024 &dev_attr_retry_rate.attr,
8025 &dev_attr_rf_kill.attr,
8026 &dev_attr_rs_window.attr,
8027 &dev_attr_statistics.attr,
8028 &dev_attr_status.attr,
8029 &dev_attr_temperature.attr,
8030 &dev_attr_tx_power.attr,
8031
8032 NULL
8033 };
8034
8035 static struct attribute_group iwl3945_attribute_group = {
8036 .name = NULL, /* put in device directory */
8037 .attrs = iwl3945_sysfs_entries,
8038 };
8039
8040 static struct ieee80211_ops iwl3945_hw_ops = {
8041 .tx = iwl3945_mac_tx,
8042 .start = iwl3945_mac_start,
8043 .stop = iwl3945_mac_stop,
8044 .add_interface = iwl3945_mac_add_interface,
8045 .remove_interface = iwl3945_mac_remove_interface,
8046 .config = iwl3945_mac_config,
8047 .config_interface = iwl3945_mac_config_interface,
8048 .configure_filter = iwl3945_configure_filter,
8049 .set_key = iwl3945_mac_set_key,
8050 .get_stats = iwl3945_mac_get_stats,
8051 .get_tx_stats = iwl3945_mac_get_tx_stats,
8052 .conf_tx = iwl3945_mac_conf_tx,
8053 .get_tsf = iwl3945_mac_get_tsf,
8054 .reset_tsf = iwl3945_mac_reset_tsf,
8055 .beacon_update = iwl3945_mac_beacon_update,
8056 .hw_scan = iwl3945_mac_hw_scan
8057 };
8058
8059 static int iwl3945_pci_probe(struct pci_dev *pdev, const struct pci_device_id *ent)
8060 {
8061 int err = 0;
8062 struct iwl3945_priv *priv;
8063 struct ieee80211_hw *hw;
8064 struct iwl_3945_cfg *cfg = (struct iwl_3945_cfg *)(ent->driver_data);
8065 int i;
8066 DECLARE_MAC_BUF(mac);
8067
8068 /* Disabling hardware scan means that mac80211 will perform scans
8069 * "the hard way", rather than using device's scan. */
8070 if (iwl3945_param_disable_hw_scan) {
8071 IWL_DEBUG_INFO("Disabling hw_scan\n");
8072 iwl3945_hw_ops.hw_scan = NULL;
8073 }
8074
8075 if ((iwl3945_param_queues_num > IWL_MAX_NUM_QUEUES) ||
8076 (iwl3945_param_queues_num < IWL_MIN_NUM_QUEUES)) {
8077 IWL_ERROR("invalid queues_num, should be between %d and %d\n",
8078 IWL_MIN_NUM_QUEUES, IWL_MAX_NUM_QUEUES);
8079 err = -EINVAL;
8080 goto out;
8081 }
8082
8083 /* mac80211 allocates memory for this device instance, including
8084 * space for this driver's private structure */
8085 hw = ieee80211_alloc_hw(sizeof(struct iwl3945_priv), &iwl3945_hw_ops);
8086 if (hw == NULL) {
8087 IWL_ERROR("Can not allocate network device\n");
8088 err = -ENOMEM;
8089 goto out;
8090 }
8091 SET_IEEE80211_DEV(hw, &pdev->dev);
8092
8093 hw->rate_control_algorithm = "iwl-3945-rs";
8094
8095 IWL_DEBUG_INFO("*** LOAD DRIVER ***\n");
8096 priv = hw->priv;
8097 priv->hw = hw;
8098
8099 priv->pci_dev = pdev;
8100 priv->cfg = cfg;
8101
8102 /* Select antenna (may be helpful if only one antenna is connected) */
8103 priv->antenna = (enum iwl3945_antenna)iwl3945_param_antenna;
8104 #ifdef CONFIG_IWL3945_DEBUG
8105 iwl3945_debug_level = iwl3945_param_debug;
8106 atomic_set(&priv->restrict_refcnt, 0);
8107 #endif
8108 priv->retry_rate = 1;
8109
8110 priv->ibss_beacon = NULL;
8111
8112 /* Tell mac80211 and its clients (e.g. Wireless Extensions)
8113 * the range of signal quality values that we'll provide.
8114 * Negative values for level/noise indicate that we'll provide dBm.
8115 * For WE, at least, non-0 values here *enable* display of values
8116 * in app (iwconfig). */
8117 hw->max_rssi = -20; /* signal level, negative indicates dBm */
8118 hw->max_noise = -20; /* noise level, negative indicates dBm */
8119 hw->max_signal = 100; /* link quality indication (%) */
8120
8121 /* Tell mac80211 our Tx characteristics */
8122 hw->flags = IEEE80211_HW_HOST_GEN_BEACON_TEMPLATE;
8123
8124 /* 4 EDCA QOS priorities */
8125 hw->queues = 4;
8126
8127 spin_lock_init(&priv->lock);
8128 spin_lock_init(&priv->power_data.lock);
8129 spin_lock_init(&priv->sta_lock);
8130 spin_lock_init(&priv->hcmd_lock);
8131
8132 for (i = 0; i < IWL_IBSS_MAC_HASH_SIZE; i++)
8133 INIT_LIST_HEAD(&priv->ibss_mac_hash[i]);
8134
8135 INIT_LIST_HEAD(&priv->free_frames);
8136
8137 mutex_init(&priv->mutex);
8138 if (pci_enable_device(pdev)) {
8139 err = -ENODEV;
8140 goto out_ieee80211_free_hw;
8141 }
8142
8143 pci_set_master(pdev);
8144
8145 /* Clear the driver's (not device's) station table */
8146 iwl3945_clear_stations_table(priv);
8147
8148 priv->data_retry_limit = -1;
8149 priv->ieee_channels = NULL;
8150 priv->ieee_rates = NULL;
8151 priv->band = IEEE80211_BAND_2GHZ;
8152
8153 err = pci_set_dma_mask(pdev, DMA_32BIT_MASK);
8154 if (!err)
8155 err = pci_set_consistent_dma_mask(pdev, DMA_32BIT_MASK);
8156 if (err) {
8157 printk(KERN_WARNING DRV_NAME ": No suitable DMA available.\n");
8158 goto out_pci_disable_device;
8159 }
8160
8161 pci_set_drvdata(pdev, priv);
8162 err = pci_request_regions(pdev, DRV_NAME);
8163 if (err)
8164 goto out_pci_disable_device;
8165
8166 /* We disable the RETRY_TIMEOUT register (0x41) to keep
8167 * PCI Tx retries from interfering with C3 CPU state */
8168 pci_write_config_byte(pdev, 0x41, 0x00);
8169
8170 priv->hw_base = pci_iomap(pdev, 0, 0);
8171 if (!priv->hw_base) {
8172 err = -ENODEV;
8173 goto out_pci_release_regions;
8174 }
8175
8176 IWL_DEBUG_INFO("pci_resource_len = 0x%08llx\n",
8177 (unsigned long long) pci_resource_len(pdev, 0));
8178 IWL_DEBUG_INFO("pci_resource_base = %p\n", priv->hw_base);
8179
8180 /* Initialize module parameter values here */
8181
8182 /* Disable radio (SW RF KILL) via parameter when loading driver */
8183 if (iwl3945_param_disable) {
8184 set_bit(STATUS_RF_KILL_SW, &priv->status);
8185 IWL_DEBUG_INFO("Radio disabled.\n");
8186 }
8187
8188 priv->iw_mode = IEEE80211_IF_TYPE_STA;
8189
8190 printk(KERN_INFO DRV_NAME
8191 ": Detected Intel Wireless WiFi Link %s\n", priv->cfg->name);
8192
8193 /* Device-specific setup */
8194 if (iwl3945_hw_set_hw_setting(priv)) {
8195 IWL_ERROR("failed to set hw settings\n");
8196 goto out_iounmap;
8197 }
8198
8199 if (iwl3945_param_qos_enable)
8200 priv->qos_data.qos_enable = 1;
8201
8202 iwl3945_reset_qos(priv);
8203
8204 priv->qos_data.qos_active = 0;
8205 priv->qos_data.qos_cap.val = 0;
8206
8207 iwl3945_set_rxon_channel(priv, IEEE80211_BAND_2GHZ, 6);
8208 iwl3945_setup_deferred_work(priv);
8209 iwl3945_setup_rx_handlers(priv);
8210
8211 priv->rates_mask = IWL_RATES_MASK;
8212 /* If power management is turned on, default to AC mode */
8213 priv->power_mode = IWL_POWER_AC;
8214 priv->user_txpower_limit = IWL_DEFAULT_TX_POWER;
8215
8216 iwl3945_disable_interrupts(priv);
8217
8218 err = sysfs_create_group(&pdev->dev.kobj, &iwl3945_attribute_group);
8219 if (err) {
8220 IWL_ERROR("failed to create sysfs device attributes\n");
8221 goto out_release_irq;
8222 }
8223
8224 /* nic init */
8225 iwl3945_set_bit(priv, CSR_GIO_CHICKEN_BITS,
8226 CSR_GIO_CHICKEN_BITS_REG_BIT_DIS_L0S_EXIT_TIMER);
8227
8228 iwl3945_set_bit(priv, CSR_GP_CNTRL, CSR_GP_CNTRL_REG_FLAG_INIT_DONE);
8229 err = iwl3945_poll_bit(priv, CSR_GP_CNTRL,
8230 CSR_GP_CNTRL_REG_FLAG_MAC_CLOCK_READY,
8231 CSR_GP_CNTRL_REG_FLAG_MAC_CLOCK_READY, 25000);
8232 if (err < 0) {
8233 IWL_DEBUG_INFO("Failed to init the card\n");
8234 goto out_remove_sysfs;
8235 }
8236 /* Read the EEPROM */
8237 err = iwl3945_eeprom_init(priv);
8238 if (err) {
8239 IWL_ERROR("Unable to init EEPROM\n");
8240 goto out_remove_sysfs;
8241 }
8242 /* MAC Address location in EEPROM same for 3945/4965 */
8243 get_eeprom_mac(priv, priv->mac_addr);
8244 IWL_DEBUG_INFO("MAC address: %s\n", print_mac(mac, priv->mac_addr));
8245 SET_IEEE80211_PERM_ADDR(priv->hw, priv->mac_addr);
8246
8247 err = iwl3945_init_channel_map(priv);
8248 if (err) {
8249 IWL_ERROR("initializing regulatory failed: %d\n", err);
8250 goto out_remove_sysfs;
8251 }
8252
8253 err = iwl3945_init_geos(priv);
8254 if (err) {
8255 IWL_ERROR("initializing geos failed: %d\n", err);
8256 goto out_free_channel_map;
8257 }
8258
8259 iwl3945_rate_control_register(priv->hw);
8260 err = ieee80211_register_hw(priv->hw);
8261 if (err) {
8262 IWL_ERROR("Failed to register network device (error %d)\n", err);
8263 goto out_free_geos;
8264 }
8265
8266 priv->hw->conf.beacon_int = 100;
8267 priv->mac80211_registered = 1;
8268 pci_save_state(pdev);
8269 pci_disable_device(pdev);
8270
8271 return 0;
8272
8273 out_free_geos:
8274 iwl3945_free_geos(priv);
8275 out_free_channel_map:
8276 iwl3945_free_channel_map(priv);
8277 out_remove_sysfs:
8278 sysfs_remove_group(&pdev->dev.kobj, &iwl3945_attribute_group);
8279
8280 out_release_irq:
8281 destroy_workqueue(priv->workqueue);
8282 priv->workqueue = NULL;
8283 iwl3945_unset_hw_setting(priv);
8284
8285 out_iounmap:
8286 pci_iounmap(pdev, priv->hw_base);
8287 out_pci_release_regions:
8288 pci_release_regions(pdev);
8289 out_pci_disable_device:
8290 pci_disable_device(pdev);
8291 pci_set_drvdata(pdev, NULL);
8292 out_ieee80211_free_hw:
8293 ieee80211_free_hw(priv->hw);
8294 out:
8295 return err;
8296 }
8297
8298 static void iwl3945_pci_remove(struct pci_dev *pdev)
8299 {
8300 struct iwl3945_priv *priv = pci_get_drvdata(pdev);
8301 struct list_head *p, *q;
8302 int i;
8303
8304 if (!priv)
8305 return;
8306
8307 IWL_DEBUG_INFO("*** UNLOAD DRIVER ***\n");
8308
8309 set_bit(STATUS_EXIT_PENDING, &priv->status);
8310
8311 iwl3945_down(priv);
8312
8313 /* Free MAC hash list for ADHOC */
8314 for (i = 0; i < IWL_IBSS_MAC_HASH_SIZE; i++) {
8315 list_for_each_safe(p, q, &priv->ibss_mac_hash[i]) {
8316 list_del(p);
8317 kfree(list_entry(p, struct iwl3945_ibss_seq, list));
8318 }
8319 }
8320
8321 sysfs_remove_group(&pdev->dev.kobj, &iwl3945_attribute_group);
8322
8323 iwl3945_dealloc_ucode_pci(priv);
8324
8325 if (priv->rxq.bd)
8326 iwl3945_rx_queue_free(priv, &priv->rxq);
8327 iwl3945_hw_txq_ctx_free(priv);
8328
8329 iwl3945_unset_hw_setting(priv);
8330 iwl3945_clear_stations_table(priv);
8331
8332 if (priv->mac80211_registered) {
8333 ieee80211_unregister_hw(priv->hw);
8334 iwl3945_rate_control_unregister(priv->hw);
8335 }
8336
8337 /*netif_stop_queue(dev); */
8338 flush_workqueue(priv->workqueue);
8339
8340 /* ieee80211_unregister_hw calls iwl3945_mac_stop, which flushes
8341 * priv->workqueue... so we can't take down the workqueue
8342 * until now... */
8343 destroy_workqueue(priv->workqueue);
8344 priv->workqueue = NULL;
8345
8346 pci_iounmap(pdev, priv->hw_base);
8347 pci_release_regions(pdev);
8348 pci_disable_device(pdev);
8349 pci_set_drvdata(pdev, NULL);
8350
8351 iwl3945_free_channel_map(priv);
8352 iwl3945_free_geos(priv);
8353
8354 if (priv->ibss_beacon)
8355 dev_kfree_skb(priv->ibss_beacon);
8356
8357 ieee80211_free_hw(priv->hw);
8358 }
8359
8360 #ifdef CONFIG_PM
8361
8362 static int iwl3945_pci_suspend(struct pci_dev *pdev, pm_message_t state)
8363 {
8364 struct iwl3945_priv *priv = pci_get_drvdata(pdev);
8365
8366 if (priv->is_open) {
8367 set_bit(STATUS_IN_SUSPEND, &priv->status);
8368 iwl3945_mac_stop(priv->hw);
8369 priv->is_open = 1;
8370 }
8371
8372 pci_set_power_state(pdev, PCI_D3hot);
8373
8374 return 0;
8375 }
8376
8377 static int iwl3945_pci_resume(struct pci_dev *pdev)
8378 {
8379 struct iwl3945_priv *priv = pci_get_drvdata(pdev);
8380
8381 pci_set_power_state(pdev, PCI_D0);
8382
8383 if (priv->is_open)
8384 iwl3945_mac_start(priv->hw);
8385
8386 clear_bit(STATUS_IN_SUSPEND, &priv->status);
8387 return 0;
8388 }
8389
8390 #endif /* CONFIG_PM */
8391
8392 /*****************************************************************************
8393 *
8394 * driver and module entry point
8395 *
8396 *****************************************************************************/
8397
8398 static struct pci_driver iwl3945_driver = {
8399 .name = DRV_NAME,
8400 .id_table = iwl3945_hw_card_ids,
8401 .probe = iwl3945_pci_probe,
8402 .remove = __devexit_p(iwl3945_pci_remove),
8403 #ifdef CONFIG_PM
8404 .suspend = iwl3945_pci_suspend,
8405 .resume = iwl3945_pci_resume,
8406 #endif
8407 };
8408
8409 static int __init iwl3945_init(void)
8410 {
8411
8412 int ret;
8413 printk(KERN_INFO DRV_NAME ": " DRV_DESCRIPTION ", " DRV_VERSION "\n");
8414 printk(KERN_INFO DRV_NAME ": " DRV_COPYRIGHT "\n");
8415 ret = pci_register_driver(&iwl3945_driver);
8416 if (ret) {
8417 IWL_ERROR("Unable to initialize PCI module\n");
8418 return ret;
8419 }
8420 #ifdef CONFIG_IWL3945_DEBUG
8421 ret = driver_create_file(&iwl3945_driver.driver, &driver_attr_debug_level);
8422 if (ret) {
8423 IWL_ERROR("Unable to create driver sysfs file\n");
8424 pci_unregister_driver(&iwl3945_driver);
8425 return ret;
8426 }
8427 #endif
8428
8429 return ret;
8430 }
8431
8432 static void __exit iwl3945_exit(void)
8433 {
8434 #ifdef CONFIG_IWL3945_DEBUG
8435 driver_remove_file(&iwl3945_driver.driver, &driver_attr_debug_level);
8436 #endif
8437 pci_unregister_driver(&iwl3945_driver);
8438 }
8439
8440 module_param_named(antenna, iwl3945_param_antenna, int, 0444);
8441 MODULE_PARM_DESC(antenna, "select antenna (1=Main, 2=Aux, default 0 [both])");
8442 module_param_named(disable, iwl3945_param_disable, int, 0444);
8443 MODULE_PARM_DESC(disable, "manually disable the radio (default 0 [radio on])");
8444 module_param_named(hwcrypto, iwl3945_param_hwcrypto, int, 0444);
8445 MODULE_PARM_DESC(hwcrypto,
8446 "using hardware crypto engine (default 0 [software])\n");
8447 module_param_named(debug, iwl3945_param_debug, int, 0444);
8448 MODULE_PARM_DESC(debug, "debug output mask");
8449 module_param_named(disable_hw_scan, iwl3945_param_disable_hw_scan, int, 0444);
8450 MODULE_PARM_DESC(disable_hw_scan, "disable hardware scanning (default 0)");
8451
8452 module_param_named(queues_num, iwl3945_param_queues_num, int, 0444);
8453 MODULE_PARM_DESC(queues_num, "number of hw queues.");
8454
8455 /* QoS */
8456 module_param_named(qos_enable, iwl3945_param_qos_enable, int, 0444);
8457 MODULE_PARM_DESC(qos_enable, "enable all QoS functionality");
8458
8459 module_exit(iwl3945_exit);
8460 module_init(iwl3945_init);
SocketAccessConTroL development