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Merge git://git.kernel.org/pub/scm/linux/kernel/git/rusty/linux-2.6-for-linus
[wrt350n-kernel.git] / drivers / net / wireless / iwlwifi / iwl3945-base.c
blob40b71bc2c4a4c3eea35c5896d4293e20b4f5034d
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.h"
50 #include "iwl-helpers.h"
51
52 #ifdef CONFIG_IWL3945_DEBUG
53 u32 iwl3945_debug_level;
54 #endif
55
56 static int iwl3945_tx_queue_update_write_ptr(struct iwl3945_priv *priv,
57 struct iwl3945_tx_queue *txq);
58
59 /******************************************************************************
60 *
61 * module boiler plate
62 *
63 ******************************************************************************/
64
65 /* module parameters */
66 static int iwl3945_param_disable_hw_scan; /* def: 0 = use 3945's h/w scan */
67 static int iwl3945_param_debug; /* def: 0 = minimal debug log messages */
68 static int iwl3945_param_disable; /* def: 0 = enable radio */
69 static int iwl3945_param_antenna; /* def: 0 = both antennas (use diversity) */
70 int iwl3945_param_hwcrypto; /* def: 0 = use software encryption */
71 static int iwl3945_param_qos_enable = 1; /* def: 1 = use quality of service */
72 int iwl3945_param_queues_num = IWL_MAX_NUM_QUEUES; /* def: 8 Tx queues */
73
74 /*
75 * module name, copyright, version, etc.
76 * NOTE: DRV_NAME is defined in iwlwifi.h for use by iwl-debug.h and printk
77 */
78
79 #define DRV_DESCRIPTION \
80 "Intel(R) PRO/Wireless 3945ABG/BG Network Connection driver for Linux"
81
82 #ifdef CONFIG_IWL3945_DEBUG
83 #define VD "d"
84 #else
85 #define VD
86 #endif
87
88 #ifdef CONFIG_IWL3945_SPECTRUM_MEASUREMENT
89 #define VS "s"
90 #else
91 #define VS
92 #endif
93
94 #define IWLWIFI_VERSION "1.2.23k" VD VS
95 #define DRV_COPYRIGHT "Copyright(c) 2003-2007 Intel Corporation"
96 #define DRV_VERSION IWLWIFI_VERSION
97
98 /* Change firmware file name, using "-" and incrementing number,
99 * *only* when uCode interface or architecture changes so that it
100 * is not compatible with earlier drivers.
101 * This number will also appear in << 8 position of 1st dword of uCode file */
102 #define IWL3945_UCODE_API "-1"
103
104 MODULE_DESCRIPTION(DRV_DESCRIPTION);
105 MODULE_VERSION(DRV_VERSION);
106 MODULE_AUTHOR(DRV_COPYRIGHT);
107 MODULE_LICENSE("GPL");
108
109 static __le16 *ieee80211_get_qos_ctrl(struct ieee80211_hdr *hdr)
110 {
111 u16 fc = le16_to_cpu(hdr->frame_control);
112 int hdr_len = ieee80211_get_hdrlen(fc);
113
114 if ((fc & 0x00cc) == (IEEE80211_STYPE_QOS_DATA | IEEE80211_FTYPE_DATA))
115 return (__le16 *) ((u8 *) hdr + hdr_len - QOS_CONTROL_LEN);
116 return NULL;
117 }
118
119 static const struct ieee80211_hw_mode *iwl3945_get_hw_mode(
120 struct iwl3945_priv *priv, int mode)
121 {
122 int i;
123
124 for (i = 0; i < 3; i++)
125 if (priv->modes[i].mode == mode)
126 return &priv->modes[i];
127
128 return NULL;
129 }
130
131 static int iwl3945_is_empty_essid(const char *essid, int essid_len)
132 {
133 /* Single white space is for Linksys APs */
134 if (essid_len == 1 && essid[0] == ' ')
135 return 1;
136
137 /* Otherwise, if the entire essid is 0, we assume it is hidden */
138 while (essid_len) {
139 essid_len--;
140 if (essid[essid_len] != '\0')
141 return 0;
142 }
143
144 return 1;
145 }
146
147 static const char *iwl3945_escape_essid(const char *essid, u8 essid_len)
148 {
149 static char escaped[IW_ESSID_MAX_SIZE * 2 + 1];
150 const char *s = essid;
151 char *d = escaped;
152
153 if (iwl3945_is_empty_essid(essid, essid_len)) {
154 memcpy(escaped, "<hidden>", sizeof("<hidden>"));
155 return escaped;
156 }
157
158 essid_len = min(essid_len, (u8) IW_ESSID_MAX_SIZE);
159 while (essid_len--) {
160 if (*s == '\0') {
161 *d++ = '\\';
162 *d++ = '0';
163 s++;
164 } else
165 *d++ = *s++;
166 }
167 *d = '\0';
168 return escaped;
169 }
170
171 static void iwl3945_print_hex_dump(int level, void *p, u32 len)
172 {
173 #ifdef CONFIG_IWL3945_DEBUG
174 if (!(iwl3945_debug_level & level))
175 return;
176
177 print_hex_dump(KERN_DEBUG, "iwl data: ", DUMP_PREFIX_OFFSET, 16, 1,
178 p, len, 1);
179 #endif
180 }
181
182 /*************** DMA-QUEUE-GENERAL-FUNCTIONS *****
183 * DMA services
184 *
185 * Theory of operation
186 *
187 * A Tx or Rx queue resides in host DRAM, and is comprised of a circular buffer
188 * of buffer descriptors, each of which points to one or more data buffers for
189 * the device to read from or fill. Driver and device exchange status of each
190 * queue via "read" and "write" pointers. Driver keeps minimum of 2 empty
191 * entries in each circular buffer, to protect against confusing empty and full
192 * queue states.
193 *
194 * The device reads or writes the data in the queues via the device's several
195 * DMA/FIFO channels. Each queue is mapped to a single DMA channel.
196 *
197 * For Tx queue, there are low mark and high mark limits. If, after queuing
198 * the packet for Tx, free space become < low mark, Tx queue stopped. When
199 * reclaiming packets (on 'tx done IRQ), if free space become > high mark,
200 * Tx queue resumed.
201 *
202 * The 3945 operates with six queues: One receive queue, one transmit queue
203 * (#4) for sending commands to the device firmware, and four transmit queues
204 * (#0-3) for data tx via EDCA. An additional 2 HCCA queues are unused.
205 ***************************************************/
206
207 static int iwl3945_queue_space(const struct iwl3945_queue *q)
208 {
209 int s = q->read_ptr - q->write_ptr;
210
211 if (q->read_ptr > q->write_ptr)
212 s -= q->n_bd;
213
214 if (s <= 0)
215 s += q->n_window;
216 /* keep some reserve to not confuse empty and full situations */
217 s -= 2;
218 if (s < 0)
219 s = 0;
220 return s;
221 }
222
223 /**
224 * iwl3945_queue_inc_wrap - increment queue index, wrap back to beginning
225 * @index -- current index
226 * @n_bd -- total number of entries in queue (must be power of 2)
227 */
228 static inline int iwl3945_queue_inc_wrap(int index, int n_bd)
229 {
230 return ++index & (n_bd - 1);
231 }
232
233 /**
234 * iwl3945_queue_dec_wrap - increment queue index, wrap back to end
235 * @index -- current index
236 * @n_bd -- total number of entries in queue (must be power of 2)
237 */
238 static inline int iwl3945_queue_dec_wrap(int index, int n_bd)
239 {
240 return --index & (n_bd - 1);
241 }
242
243 static inline int x2_queue_used(const struct iwl3945_queue *q, int i)
244 {
245 return q->write_ptr > q->read_ptr ?
246 (i >= q->read_ptr && i < q->write_ptr) :
247 !(i < q->read_ptr && i >= q->write_ptr);
248 }
249
250 static inline u8 get_cmd_index(struct iwl3945_queue *q, u32 index, int is_huge)
251 {
252 /* This is for scan command, the big buffer at end of command array */
253 if (is_huge)
254 return q->n_window; /* must be power of 2 */
255
256 /* Otherwise, use normal size buffers */
257 return index & (q->n_window - 1);
258 }
259
260 /**
261 * iwl3945_queue_init - Initialize queue's high/low-water and read/write indexes
262 */
263 static int iwl3945_queue_init(struct iwl3945_priv *priv, struct iwl3945_queue *q,
264 int count, int slots_num, u32 id)
265 {
266 q->n_bd = count;
267 q->n_window = slots_num;
268 q->id = id;
269
270 /* count must be power-of-two size, otherwise iwl3945_queue_inc_wrap
271 * and iwl3945_queue_dec_wrap are broken. */
272 BUG_ON(!is_power_of_2(count));
273
274 /* slots_num must be power-of-two size, otherwise
275 * get_cmd_index is broken. */
276 BUG_ON(!is_power_of_2(slots_num));
277
278 q->low_mark = q->n_window / 4;
279 if (q->low_mark < 4)
280 q->low_mark = 4;
281
282 q->high_mark = q->n_window / 8;
283 if (q->high_mark < 2)
284 q->high_mark = 2;
285
286 q->write_ptr = q->read_ptr = 0;
287
288 return 0;
289 }
290
291 /**
292 * iwl3945_tx_queue_alloc - Alloc driver data and TFD CB for one Tx/cmd queue
293 */
294 static int iwl3945_tx_queue_alloc(struct iwl3945_priv *priv,
295 struct iwl3945_tx_queue *txq, u32 id)
296 {
297 struct pci_dev *dev = priv->pci_dev;
298
299 /* Driver private data, only for Tx (not command) queues,
300 * not shared with device. */
301 if (id != IWL_CMD_QUEUE_NUM) {
302 txq->txb = kmalloc(sizeof(txq->txb[0]) *
303 TFD_QUEUE_SIZE_MAX, GFP_KERNEL);
304 if (!txq->txb) {
305 IWL_ERROR("kmalloc for auxiliary BD "
306 "structures failed\n");
307 goto error;
308 }
309 } else
310 txq->txb = NULL;
311
312 /* Circular buffer of transmit frame descriptors (TFDs),
313 * shared with device */
314 txq->bd = pci_alloc_consistent(dev,
315 sizeof(txq->bd[0]) * TFD_QUEUE_SIZE_MAX,
316 &txq->q.dma_addr);
317
318 if (!txq->bd) {
319 IWL_ERROR("pci_alloc_consistent(%zd) failed\n",
320 sizeof(txq->bd[0]) * TFD_QUEUE_SIZE_MAX);
321 goto error;
322 }
323 txq->q.id = id;
324
325 return 0;
326
327 error:
328 if (txq->txb) {
329 kfree(txq->txb);
330 txq->txb = NULL;
331 }
332
333 return -ENOMEM;
334 }
335
336 /**
337 * iwl3945_tx_queue_init - Allocate and initialize one tx/cmd queue
338 */
339 int iwl3945_tx_queue_init(struct iwl3945_priv *priv,
340 struct iwl3945_tx_queue *txq, int slots_num, u32 txq_id)
341 {
342 struct pci_dev *dev = priv->pci_dev;
343 int len;
344 int rc = 0;
345
346 /*
347 * Alloc buffer array for commands (Tx or other types of commands).
348 * For the command queue (#4), allocate command space + one big
349 * command for scan, since scan command is very huge; the system will
350 * not have two scans at the same time, so only one is needed.
351 * For data Tx queues (all other queues), no super-size command
352 * space is needed.
353 */
354 len = sizeof(struct iwl3945_cmd) * slots_num;
355 if (txq_id == IWL_CMD_QUEUE_NUM)
356 len += IWL_MAX_SCAN_SIZE;
357 txq->cmd = pci_alloc_consistent(dev, len, &txq->dma_addr_cmd);
358 if (!txq->cmd)
359 return -ENOMEM;
360
361 /* Alloc driver data array and TFD circular buffer */
362 rc = iwl3945_tx_queue_alloc(priv, txq, txq_id);
363 if (rc) {
364 pci_free_consistent(dev, len, txq->cmd, txq->dma_addr_cmd);
365
366 return -ENOMEM;
367 }
368 txq->need_update = 0;
369
370 /* TFD_QUEUE_SIZE_MAX must be power-of-two size, otherwise
371 * iwl3945_queue_inc_wrap and iwl3945_queue_dec_wrap are broken. */
372 BUILD_BUG_ON(TFD_QUEUE_SIZE_MAX & (TFD_QUEUE_SIZE_MAX - 1));
373
374 /* Initialize queue high/low-water, head/tail indexes */
375 iwl3945_queue_init(priv, &txq->q, TFD_QUEUE_SIZE_MAX, slots_num, txq_id);
376
377 /* Tell device where to find queue, enable DMA channel. */
378 iwl3945_hw_tx_queue_init(priv, txq);
379
380 return 0;
381 }
382
383 /**
384 * iwl3945_tx_queue_free - Deallocate DMA queue.
385 * @txq: Transmit queue to deallocate.
386 *
387 * Empty queue by removing and destroying all BD's.
388 * Free all buffers.
389 * 0-fill, but do not free "txq" descriptor structure.
390 */
391 void iwl3945_tx_queue_free(struct iwl3945_priv *priv, struct iwl3945_tx_queue *txq)
392 {
393 struct iwl3945_queue *q = &txq->q;
394 struct pci_dev *dev = priv->pci_dev;
395 int len;
396
397 if (q->n_bd == 0)
398 return;
399
400 /* first, empty all BD's */
401 for (; q->write_ptr != q->read_ptr;
402 q->read_ptr = iwl3945_queue_inc_wrap(q->read_ptr, q->n_bd))
403 iwl3945_hw_txq_free_tfd(priv, txq);
404
405 len = sizeof(struct iwl3945_cmd) * q->n_window;
406 if (q->id == IWL_CMD_QUEUE_NUM)
407 len += IWL_MAX_SCAN_SIZE;
408
409 /* De-alloc array of command/tx buffers */
410 pci_free_consistent(dev, len, txq->cmd, txq->dma_addr_cmd);
411
412 /* De-alloc circular buffer of TFDs */
413 if (txq->q.n_bd)
414 pci_free_consistent(dev, sizeof(struct iwl3945_tfd_frame) *
415 txq->q.n_bd, txq->bd, txq->q.dma_addr);
416
417 /* De-alloc array of per-TFD driver data */
418 if (txq->txb) {
419 kfree(txq->txb);
420 txq->txb = NULL;
421 }
422
423 /* 0-fill queue descriptor structure */
424 memset(txq, 0, sizeof(*txq));
425 }
426
427 const u8 iwl3945_broadcast_addr[ETH_ALEN] = { 0xFF, 0xFF, 0xFF, 0xFF, 0xFF, 0xFF };
428
429 /*************** STATION TABLE MANAGEMENT ****
430 * mac80211 should be examined to determine if sta_info is duplicating
431 * the functionality provided here
432 */
433
434 /**************************************************************/
435 #if 0 /* temporary disable till we add real remove station */
436 /**
437 * iwl3945_remove_station - Remove driver's knowledge of station.
438 *
439 * NOTE: This does not remove station from device's station table.
440 */
441 static u8 iwl3945_remove_station(struct iwl3945_priv *priv, const u8 *addr, int is_ap)
442 {
443 int index = IWL_INVALID_STATION;
444 int i;
445 unsigned long flags;
446
447 spin_lock_irqsave(&priv->sta_lock, flags);
448
449 if (is_ap)
450 index = IWL_AP_ID;
451 else if (is_broadcast_ether_addr(addr))
452 index = priv->hw_setting.bcast_sta_id;
453 else
454 for (i = IWL_STA_ID; i < priv->hw_setting.max_stations; i++)
455 if (priv->stations[i].used &&
456 !compare_ether_addr(priv->stations[i].sta.sta.addr,
457 addr)) {
458 index = i;
459 break;
460 }
461
462 if (unlikely(index == IWL_INVALID_STATION))
463 goto out;
464
465 if (priv->stations[index].used) {
466 priv->stations[index].used = 0;
467 priv->num_stations--;
468 }
469
470 BUG_ON(priv->num_stations < 0);
471
472 out:
473 spin_unlock_irqrestore(&priv->sta_lock, flags);
474 return 0;
475 }
476 #endif
477
478 /**
479 * iwl3945_clear_stations_table - Clear the driver's station table
480 *
481 * NOTE: This does not clear or otherwise alter the device's station table.
482 */
483 static void iwl3945_clear_stations_table(struct iwl3945_priv *priv)
484 {
485 unsigned long flags;
486
487 spin_lock_irqsave(&priv->sta_lock, flags);
488
489 priv->num_stations = 0;
490 memset(priv->stations, 0, sizeof(priv->stations));
491
492 spin_unlock_irqrestore(&priv->sta_lock, flags);
493 }
494
495 /**
496 * iwl3945_add_station - Add station to station tables in driver and device
497 */
498 u8 iwl3945_add_station(struct iwl3945_priv *priv, const u8 *addr, int is_ap, u8 flags)
499 {
500 int i;
501 int index = IWL_INVALID_STATION;
502 struct iwl3945_station_entry *station;
503 unsigned long flags_spin;
504 DECLARE_MAC_BUF(mac);
505 u8 rate;
506
507 spin_lock_irqsave(&priv->sta_lock, flags_spin);
508 if (is_ap)
509 index = IWL_AP_ID;
510 else if (is_broadcast_ether_addr(addr))
511 index = priv->hw_setting.bcast_sta_id;
512 else
513 for (i = IWL_STA_ID; i < priv->hw_setting.max_stations; i++) {
514 if (!compare_ether_addr(priv->stations[i].sta.sta.addr,
515 addr)) {
516 index = i;
517 break;
518 }
519
520 if (!priv->stations[i].used &&
521 index == IWL_INVALID_STATION)
522 index = i;
523 }
524
525 /* These two conditions has the same outcome but keep them separate
526 since they have different meaning */
527 if (unlikely(index == IWL_INVALID_STATION)) {
528 spin_unlock_irqrestore(&priv->sta_lock, flags_spin);
529 return index;
530 }
531
532 if (priv->stations[index].used &&
533 !compare_ether_addr(priv->stations[index].sta.sta.addr, addr)) {
534 spin_unlock_irqrestore(&priv->sta_lock, flags_spin);
535 return index;
536 }
537
538 IWL_DEBUG_ASSOC("Add STA ID %d: %s\n", index, print_mac(mac, addr));
539 station = &priv->stations[index];
540 station->used = 1;
541 priv->num_stations++;
542
543 /* Set up the REPLY_ADD_STA command to send to device */
544 memset(&station->sta, 0, sizeof(struct iwl3945_addsta_cmd));
545 memcpy(station->sta.sta.addr, addr, ETH_ALEN);
546 station->sta.mode = 0;
547 station->sta.sta.sta_id = index;
548 station->sta.station_flags = 0;
549
550 if (priv->phymode == MODE_IEEE80211A)
551 rate = IWL_RATE_6M_PLCP;
552 else
553 rate = IWL_RATE_1M_PLCP;
554
555 /* Turn on both antennas for the station... */
556 station->sta.rate_n_flags =
557 iwl3945_hw_set_rate_n_flags(rate, RATE_MCS_ANT_AB_MSK);
558 station->current_rate.rate_n_flags =
559 le16_to_cpu(station->sta.rate_n_flags);
560
561 spin_unlock_irqrestore(&priv->sta_lock, flags_spin);
562
563 /* Add station to device's station table */
564 iwl3945_send_add_station(priv, &station->sta, flags);
565 return index;
566
567 }
568
569 /*************** DRIVER STATUS FUNCTIONS *****/
570
571 static inline int iwl3945_is_ready(struct iwl3945_priv *priv)
572 {
573 /* The adapter is 'ready' if READY and GEO_CONFIGURED bits are
574 * set but EXIT_PENDING is not */
575 return test_bit(STATUS_READY, &priv->status) &&
576 test_bit(STATUS_GEO_CONFIGURED, &priv->status) &&
577 !test_bit(STATUS_EXIT_PENDING, &priv->status);
578 }
579
580 static inline int iwl3945_is_alive(struct iwl3945_priv *priv)
581 {
582 return test_bit(STATUS_ALIVE, &priv->status);
583 }
584
585 static inline int iwl3945_is_init(struct iwl3945_priv *priv)
586 {
587 return test_bit(STATUS_INIT, &priv->status);
588 }
589
590 static inline int iwl3945_is_rfkill(struct iwl3945_priv *priv)
591 {
592 return test_bit(STATUS_RF_KILL_HW, &priv->status) ||
593 test_bit(STATUS_RF_KILL_SW, &priv->status);
594 }
595
596 static inline int iwl3945_is_ready_rf(struct iwl3945_priv *priv)
597 {
598
599 if (iwl3945_is_rfkill(priv))
600 return 0;
601
602 return iwl3945_is_ready(priv);
603 }
604
605 /*************** HOST COMMAND QUEUE FUNCTIONS *****/
606
607 #define IWL_CMD(x) case x : return #x
608
609 static const char *get_cmd_string(u8 cmd)
610 {
611 switch (cmd) {
612 IWL_CMD(REPLY_ALIVE);
613 IWL_CMD(REPLY_ERROR);
614 IWL_CMD(REPLY_RXON);
615 IWL_CMD(REPLY_RXON_ASSOC);
616 IWL_CMD(REPLY_QOS_PARAM);
617 IWL_CMD(REPLY_RXON_TIMING);
618 IWL_CMD(REPLY_ADD_STA);
619 IWL_CMD(REPLY_REMOVE_STA);
620 IWL_CMD(REPLY_REMOVE_ALL_STA);
621 IWL_CMD(REPLY_3945_RX);
622 IWL_CMD(REPLY_TX);
623 IWL_CMD(REPLY_RATE_SCALE);
624 IWL_CMD(REPLY_LEDS_CMD);
625 IWL_CMD(REPLY_TX_LINK_QUALITY_CMD);
626 IWL_CMD(RADAR_NOTIFICATION);
627 IWL_CMD(REPLY_QUIET_CMD);
628 IWL_CMD(REPLY_CHANNEL_SWITCH);
629 IWL_CMD(CHANNEL_SWITCH_NOTIFICATION);
630 IWL_CMD(REPLY_SPECTRUM_MEASUREMENT_CMD);
631 IWL_CMD(SPECTRUM_MEASURE_NOTIFICATION);
632 IWL_CMD(POWER_TABLE_CMD);
633 IWL_CMD(PM_SLEEP_NOTIFICATION);
634 IWL_CMD(PM_DEBUG_STATISTIC_NOTIFIC);
635 IWL_CMD(REPLY_SCAN_CMD);
636 IWL_CMD(REPLY_SCAN_ABORT_CMD);
637 IWL_CMD(SCAN_START_NOTIFICATION);
638 IWL_CMD(SCAN_RESULTS_NOTIFICATION);
639 IWL_CMD(SCAN_COMPLETE_NOTIFICATION);
640 IWL_CMD(BEACON_NOTIFICATION);
641 IWL_CMD(REPLY_TX_BEACON);
642 IWL_CMD(WHO_IS_AWAKE_NOTIFICATION);
643 IWL_CMD(QUIET_NOTIFICATION);
644 IWL_CMD(REPLY_TX_PWR_TABLE_CMD);
645 IWL_CMD(MEASURE_ABORT_NOTIFICATION);
646 IWL_CMD(REPLY_BT_CONFIG);
647 IWL_CMD(REPLY_STATISTICS_CMD);
648 IWL_CMD(STATISTICS_NOTIFICATION);
649 IWL_CMD(REPLY_CARD_STATE_CMD);
650 IWL_CMD(CARD_STATE_NOTIFICATION);
651 IWL_CMD(MISSED_BEACONS_NOTIFICATION);
652 default:
653 return "UNKNOWN";
654
655 }
656 }
657
658 #define HOST_COMPLETE_TIMEOUT (HZ / 2)
659
660 /**
661 * iwl3945_enqueue_hcmd - enqueue a uCode command
662 * @priv: device private data point
663 * @cmd: a point to the ucode command structure
664 *
665 * The function returns < 0 values to indicate the operation is
666 * failed. On success, it turns the index (> 0) of command in the
667 * command queue.
668 */
669 static int iwl3945_enqueue_hcmd(struct iwl3945_priv *priv, struct iwl3945_host_cmd *cmd)
670 {
671 struct iwl3945_tx_queue *txq = &priv->txq[IWL_CMD_QUEUE_NUM];
672 struct iwl3945_queue *q = &txq->q;
673 struct iwl3945_tfd_frame *tfd;
674 u32 *control_flags;
675 struct iwl3945_cmd *out_cmd;
676 u32 idx;
677 u16 fix_size = (u16)(cmd->len + sizeof(out_cmd->hdr));
678 dma_addr_t phys_addr;
679 int pad;
680 u16 count;
681 int ret;
682 unsigned long flags;
683
684 /* If any of the command structures end up being larger than
685 * the TFD_MAX_PAYLOAD_SIZE, and it sent as a 'small' command then
686 * we will need to increase the size of the TFD entries */
687 BUG_ON((fix_size > TFD_MAX_PAYLOAD_SIZE) &&
688 !(cmd->meta.flags & CMD_SIZE_HUGE));
689
690
691 if (iwl3945_is_rfkill(priv)) {
692 IWL_DEBUG_INFO("Not sending command - RF KILL");
693 return -EIO;
694 }
695
696 if (iwl3945_queue_space(q) < ((cmd->meta.flags & CMD_ASYNC) ? 2 : 1)) {
697 IWL_ERROR("No space for Tx\n");
698 return -ENOSPC;
699 }
700
701 spin_lock_irqsave(&priv->hcmd_lock, flags);
702
703 tfd = &txq->bd[q->write_ptr];
704 memset(tfd, 0, sizeof(*tfd));
705
706 control_flags = (u32 *) tfd;
707
708 idx = get_cmd_index(q, q->write_ptr, cmd->meta.flags & CMD_SIZE_HUGE);
709 out_cmd = &txq->cmd[idx];
710
711 out_cmd->hdr.cmd = cmd->id;
712 memcpy(&out_cmd->meta, &cmd->meta, sizeof(cmd->meta));
713 memcpy(&out_cmd->cmd.payload, cmd->data, cmd->len);
714
715 /* At this point, the out_cmd now has all of the incoming cmd
716 * information */
717
718 out_cmd->hdr.flags = 0;
719 out_cmd->hdr.sequence = cpu_to_le16(QUEUE_TO_SEQ(IWL_CMD_QUEUE_NUM) |
720 INDEX_TO_SEQ(q->write_ptr));
721 if (out_cmd->meta.flags & CMD_SIZE_HUGE)
722 out_cmd->hdr.sequence |= cpu_to_le16(SEQ_HUGE_FRAME);
723
724 phys_addr = txq->dma_addr_cmd + sizeof(txq->cmd[0]) * idx +
725 offsetof(struct iwl3945_cmd, hdr);
726 iwl3945_hw_txq_attach_buf_to_tfd(priv, tfd, phys_addr, fix_size);
727
728 pad = U32_PAD(cmd->len);
729 count = TFD_CTL_COUNT_GET(*control_flags);
730 *control_flags = TFD_CTL_COUNT_SET(count) | TFD_CTL_PAD_SET(pad);
731
732 IWL_DEBUG_HC("Sending command %s (#%x), seq: 0x%04X, "
733 "%d bytes at %d[%d]:%d\n",
734 get_cmd_string(out_cmd->hdr.cmd),
735 out_cmd->hdr.cmd, le16_to_cpu(out_cmd->hdr.sequence),
736 fix_size, q->write_ptr, idx, IWL_CMD_QUEUE_NUM);
737
738 txq->need_update = 1;
739
740 /* Increment and update queue's write index */
741 q->write_ptr = iwl3945_queue_inc_wrap(q->write_ptr, q->n_bd);
742 ret = iwl3945_tx_queue_update_write_ptr(priv, txq);
743
744 spin_unlock_irqrestore(&priv->hcmd_lock, flags);
745 return ret ? ret : idx;
746 }
747
748 static int iwl3945_send_cmd_async(struct iwl3945_priv *priv, struct iwl3945_host_cmd *cmd)
749 {
750 int ret;
751
752 BUG_ON(!(cmd->meta.flags & CMD_ASYNC));
753
754 /* An asynchronous command can not expect an SKB to be set. */
755 BUG_ON(cmd->meta.flags & CMD_WANT_SKB);
756
757 /* An asynchronous command MUST have a callback. */
758 BUG_ON(!cmd->meta.u.callback);
759
760 if (test_bit(STATUS_EXIT_PENDING, &priv->status))
761 return -EBUSY;
762
763 ret = iwl3945_enqueue_hcmd(priv, cmd);
764 if (ret < 0) {
765 IWL_ERROR("Error sending %s: iwl3945_enqueue_hcmd failed: %d\n",
766 get_cmd_string(cmd->id), ret);
767 return ret;
768 }
769 return 0;
770 }
771
772 static int iwl3945_send_cmd_sync(struct iwl3945_priv *priv, struct iwl3945_host_cmd *cmd)
773 {
774 int cmd_idx;
775 int ret;
776 static atomic_t entry = ATOMIC_INIT(0); /* reentrance protection */
777
778 BUG_ON(cmd->meta.flags & CMD_ASYNC);
779
780 /* A synchronous command can not have a callback set. */
781 BUG_ON(cmd->meta.u.callback != NULL);
782
783 if (atomic_xchg(&entry, 1)) {
784 IWL_ERROR("Error sending %s: Already sending a host command\n",
785 get_cmd_string(cmd->id));
786 return -EBUSY;
787 }
788
789 set_bit(STATUS_HCMD_ACTIVE, &priv->status);
790
791 if (cmd->meta.flags & CMD_WANT_SKB)
792 cmd->meta.source = &cmd->meta;
793
794 cmd_idx = iwl3945_enqueue_hcmd(priv, cmd);
795 if (cmd_idx < 0) {
796 ret = cmd_idx;
797 IWL_ERROR("Error sending %s: iwl3945_enqueue_hcmd failed: %d\n",
798 get_cmd_string(cmd->id), ret);
799 goto out;
800 }
801
802 ret = wait_event_interruptible_timeout(priv->wait_command_queue,
803 !test_bit(STATUS_HCMD_ACTIVE, &priv->status),
804 HOST_COMPLETE_TIMEOUT);
805 if (!ret) {
806 if (test_bit(STATUS_HCMD_ACTIVE, &priv->status)) {
807 IWL_ERROR("Error sending %s: time out after %dms.\n",
808 get_cmd_string(cmd->id),
809 jiffies_to_msecs(HOST_COMPLETE_TIMEOUT));
810
811 clear_bit(STATUS_HCMD_ACTIVE, &priv->status);
812 ret = -ETIMEDOUT;
813 goto cancel;
814 }
815 }
816
817 if (test_bit(STATUS_RF_KILL_HW, &priv->status)) {
818 IWL_DEBUG_INFO("Command %s aborted: RF KILL Switch\n",
819 get_cmd_string(cmd->id));
820 ret = -ECANCELED;
821 goto fail;
822 }
823 if (test_bit(STATUS_FW_ERROR, &priv->status)) {
824 IWL_DEBUG_INFO("Command %s failed: FW Error\n",
825 get_cmd_string(cmd->id));
826 ret = -EIO;
827 goto fail;
828 }
829 if ((cmd->meta.flags & CMD_WANT_SKB) && !cmd->meta.u.skb) {
830 IWL_ERROR("Error: Response NULL in '%s'\n",
831 get_cmd_string(cmd->id));
832 ret = -EIO;
833 goto out;
834 }
835
836 ret = 0;
837 goto out;
838
839 cancel:
840 if (cmd->meta.flags & CMD_WANT_SKB) {
841 struct iwl3945_cmd *qcmd;
842
843 /* Cancel the CMD_WANT_SKB flag for the cmd in the
844 * TX cmd queue. Otherwise in case the cmd comes
845 * in later, it will possibly set an invalid
846 * address (cmd->meta.source). */
847 qcmd = &priv->txq[IWL_CMD_QUEUE_NUM].cmd[cmd_idx];
848 qcmd->meta.flags &= ~CMD_WANT_SKB;
849 }
850 fail:
851 if (cmd->meta.u.skb) {
852 dev_kfree_skb_any(cmd->meta.u.skb);
853 cmd->meta.u.skb = NULL;
854 }
855 out:
856 atomic_set(&entry, 0);
857 return ret;
858 }
859
860 int iwl3945_send_cmd(struct iwl3945_priv *priv, struct iwl3945_host_cmd *cmd)
861 {
862 if (cmd->meta.flags & CMD_ASYNC)
863 return iwl3945_send_cmd_async(priv, cmd);
864
865 return iwl3945_send_cmd_sync(priv, cmd);
866 }
867
868 int iwl3945_send_cmd_pdu(struct iwl3945_priv *priv, u8 id, u16 len, const void *data)
869 {
870 struct iwl3945_host_cmd cmd = {
871 .id = id,
872 .len = len,
873 .data = data,
874 };
875
876 return iwl3945_send_cmd_sync(priv, &cmd);
877 }
878
879 static int __must_check iwl3945_send_cmd_u32(struct iwl3945_priv *priv, u8 id, u32 val)
880 {
881 struct iwl3945_host_cmd cmd = {
882 .id = id,
883 .len = sizeof(val),
884 .data = &val,
885 };
886
887 return iwl3945_send_cmd_sync(priv, &cmd);
888 }
889
890 int iwl3945_send_statistics_request(struct iwl3945_priv *priv)
891 {
892 return iwl3945_send_cmd_u32(priv, REPLY_STATISTICS_CMD, 0);
893 }
894
895 /**
896 * iwl3945_set_rxon_channel - Set the phymode and channel values in staging RXON
897 * @phymode: MODE_IEEE80211A sets to 5.2GHz; all else set to 2.4GHz
898 * @channel: Any channel valid for the requested phymode
899
900 * In addition to setting the staging RXON, priv->phymode is also set.
901 *
902 * NOTE: Does not commit to the hardware; it sets appropriate bit fields
903 * in the staging RXON flag structure based on the phymode
904 */
905 static int iwl3945_set_rxon_channel(struct iwl3945_priv *priv, u8 phymode, u16 channel)
906 {
907 if (!iwl3945_get_channel_info(priv, phymode, channel)) {
908 IWL_DEBUG_INFO("Could not set channel to %d [%d]\n",
909 channel, phymode);
910 return -EINVAL;
911 }
912
913 if ((le16_to_cpu(priv->staging_rxon.channel) == channel) &&
914 (priv->phymode == phymode))
915 return 0;
916
917 priv->staging_rxon.channel = cpu_to_le16(channel);
918 if (phymode == MODE_IEEE80211A)
919 priv->staging_rxon.flags &= ~RXON_FLG_BAND_24G_MSK;
920 else
921 priv->staging_rxon.flags |= RXON_FLG_BAND_24G_MSK;
922
923 priv->phymode = phymode;
924
925 IWL_DEBUG_INFO("Staging channel set to %d [%d]\n", channel, phymode);
926
927 return 0;
928 }
929
930 /**
931 * iwl3945_check_rxon_cmd - validate RXON structure is valid
932 *
933 * NOTE: This is really only useful during development and can eventually
934 * be #ifdef'd out once the driver is stable and folks aren't actively
935 * making changes
936 */
937 static int iwl3945_check_rxon_cmd(struct iwl3945_rxon_cmd *rxon)
938 {
939 int error = 0;
940 int counter = 1;
941
942 if (rxon->flags & RXON_FLG_BAND_24G_MSK) {
943 error |= le32_to_cpu(rxon->flags &
944 (RXON_FLG_TGJ_NARROW_BAND_MSK |
945 RXON_FLG_RADAR_DETECT_MSK));
946 if (error)
947 IWL_WARNING("check 24G fields %d | %d\n",
948 counter++, error);
949 } else {
950 error |= (rxon->flags & RXON_FLG_SHORT_SLOT_MSK) ?
951 0 : le32_to_cpu(RXON_FLG_SHORT_SLOT_MSK);
952 if (error)
953 IWL_WARNING("check 52 fields %d | %d\n",
954 counter++, error);
955 error |= le32_to_cpu(rxon->flags & RXON_FLG_CCK_MSK);
956 if (error)
957 IWL_WARNING("check 52 CCK %d | %d\n",
958 counter++, error);
959 }
960 error |= (rxon->node_addr[0] | rxon->bssid_addr[0]) & 0x1;
961 if (error)
962 IWL_WARNING("check mac addr %d | %d\n", counter++, error);
963
964 /* make sure basic rates 6Mbps and 1Mbps are supported */
965 error |= (((rxon->ofdm_basic_rates & IWL_RATE_6M_MASK) == 0) &&
966 ((rxon->cck_basic_rates & IWL_RATE_1M_MASK) == 0));
967 if (error)
968 IWL_WARNING("check basic rate %d | %d\n", counter++, error);
969
970 error |= (le16_to_cpu(rxon->assoc_id) > 2007);
971 if (error)
972 IWL_WARNING("check assoc id %d | %d\n", counter++, error);
973
974 error |= ((rxon->flags & (RXON_FLG_CCK_MSK | RXON_FLG_SHORT_SLOT_MSK))
975 == (RXON_FLG_CCK_MSK | RXON_FLG_SHORT_SLOT_MSK));
976 if (error)
977 IWL_WARNING("check CCK and short slot %d | %d\n",
978 counter++, error);
979
980 error |= ((rxon->flags & (RXON_FLG_CCK_MSK | RXON_FLG_AUTO_DETECT_MSK))
981 == (RXON_FLG_CCK_MSK | RXON_FLG_AUTO_DETECT_MSK));
982 if (error)
983 IWL_WARNING("check CCK & auto detect %d | %d\n",
984 counter++, error);
985
986 error |= ((rxon->flags & (RXON_FLG_AUTO_DETECT_MSK |
987 RXON_FLG_TGG_PROTECT_MSK)) == RXON_FLG_TGG_PROTECT_MSK);
988 if (error)
989 IWL_WARNING("check TGG and auto detect %d | %d\n",
990 counter++, error);
991
992 if ((rxon->flags & RXON_FLG_DIS_DIV_MSK))
993 error |= ((rxon->flags & (RXON_FLG_ANT_B_MSK |
994 RXON_FLG_ANT_A_MSK)) == 0);
995 if (error)
996 IWL_WARNING("check antenna %d %d\n", counter++, error);
997
998 if (error)
999 IWL_WARNING("Tuning to channel %d\n",
1000 le16_to_cpu(rxon->channel));
1001
1002 if (error) {
1003 IWL_ERROR("Not a valid iwl3945_rxon_assoc_cmd field values\n");
1004 return -1;
1005 }
1006 return 0;
1007 }
1008
1009 /**
1010 * iwl3945_full_rxon_required - check if full RXON (vs RXON_ASSOC) cmd is needed
1011 * @priv: staging_rxon is compared to active_rxon
1012 *
1013 * If the RXON structure is changing enough to require a new tune,
1014 * or is clearing the RXON_FILTER_ASSOC_MSK, then return 1 to indicate that
1015 * a new tune (full RXON command, rather than RXON_ASSOC cmd) is required.
1016 */
1017 static int iwl3945_full_rxon_required(struct iwl3945_priv *priv)
1018 {
1019
1020 /* These items are only settable from the full RXON command */
1021 if (!(priv->active_rxon.filter_flags & RXON_FILTER_ASSOC_MSK) ||
1022 compare_ether_addr(priv->staging_rxon.bssid_addr,
1023 priv->active_rxon.bssid_addr) ||
1024 compare_ether_addr(priv->staging_rxon.node_addr,
1025 priv->active_rxon.node_addr) ||
1026 compare_ether_addr(priv->staging_rxon.wlap_bssid_addr,
1027 priv->active_rxon.wlap_bssid_addr) ||
1028 (priv->staging_rxon.dev_type != priv->active_rxon.dev_type) ||
1029 (priv->staging_rxon.channel != priv->active_rxon.channel) ||
1030 (priv->staging_rxon.air_propagation !=
1031 priv->active_rxon.air_propagation) ||
1032 (priv->staging_rxon.assoc_id != priv->active_rxon.assoc_id))
1033 return 1;
1034
1035 /* flags, filter_flags, ofdm_basic_rates, and cck_basic_rates can
1036 * be updated with the RXON_ASSOC command -- however only some
1037 * flag transitions are allowed using RXON_ASSOC */
1038
1039 /* Check if we are not switching bands */
1040 if ((priv->staging_rxon.flags & RXON_FLG_BAND_24G_MSK) !=
1041 (priv->active_rxon.flags & RXON_FLG_BAND_24G_MSK))
1042 return 1;
1043
1044 /* Check if we are switching association toggle */
1045 if ((priv->staging_rxon.filter_flags & RXON_FILTER_ASSOC_MSK) !=
1046 (priv->active_rxon.filter_flags & RXON_FILTER_ASSOC_MSK))
1047 return 1;
1048
1049 return 0;
1050 }
1051
1052 static int iwl3945_send_rxon_assoc(struct iwl3945_priv *priv)
1053 {
1054 int rc = 0;
1055 struct iwl3945_rx_packet *res = NULL;
1056 struct iwl3945_rxon_assoc_cmd rxon_assoc;
1057 struct iwl3945_host_cmd cmd = {
1058 .id = REPLY_RXON_ASSOC,
1059 .len = sizeof(rxon_assoc),
1060 .meta.flags = CMD_WANT_SKB,
1061 .data = &rxon_assoc,
1062 };
1063 const struct iwl3945_rxon_cmd *rxon1 = &priv->staging_rxon;
1064 const struct iwl3945_rxon_cmd *rxon2 = &priv->active_rxon;
1065
1066 if ((rxon1->flags == rxon2->flags) &&
1067 (rxon1->filter_flags == rxon2->filter_flags) &&
1068 (rxon1->cck_basic_rates == rxon2->cck_basic_rates) &&
1069 (rxon1->ofdm_basic_rates == rxon2->ofdm_basic_rates)) {
1070 IWL_DEBUG_INFO("Using current RXON_ASSOC. Not resending.\n");
1071 return 0;
1072 }
1073
1074 rxon_assoc.flags = priv->staging_rxon.flags;
1075 rxon_assoc.filter_flags = priv->staging_rxon.filter_flags;
1076 rxon_assoc.ofdm_basic_rates = priv->staging_rxon.ofdm_basic_rates;
1077 rxon_assoc.cck_basic_rates = priv->staging_rxon.cck_basic_rates;
1078 rxon_assoc.reserved = 0;
1079
1080 rc = iwl3945_send_cmd_sync(priv, &cmd);
1081 if (rc)
1082 return rc;
1083
1084 res = (struct iwl3945_rx_packet *)cmd.meta.u.skb->data;
1085 if (res->hdr.flags & IWL_CMD_FAILED_MSK) {
1086 IWL_ERROR("Bad return from REPLY_RXON_ASSOC command\n");
1087 rc = -EIO;
1088 }
1089
1090 priv->alloc_rxb_skb--;
1091 dev_kfree_skb_any(cmd.meta.u.skb);
1092
1093 return rc;
1094 }
1095
1096 /**
1097 * iwl3945_commit_rxon - commit staging_rxon to hardware
1098 *
1099 * The RXON command in staging_rxon is committed to the hardware and
1100 * the active_rxon structure is updated with the new data. This
1101 * function correctly transitions out of the RXON_ASSOC_MSK state if
1102 * a HW tune is required based on the RXON structure changes.
1103 */
1104 static int iwl3945_commit_rxon(struct iwl3945_priv *priv)
1105 {
1106 /* cast away the const for active_rxon in this function */
1107 struct iwl3945_rxon_cmd *active_rxon = (void *)&priv->active_rxon;
1108 int rc = 0;
1109 DECLARE_MAC_BUF(mac);
1110
1111 if (!iwl3945_is_alive(priv))
1112 return -1;
1113
1114 /* always get timestamp with Rx frame */
1115 priv->staging_rxon.flags |= RXON_FLG_TSF2HOST_MSK;
1116
1117 /* select antenna */
1118 priv->staging_rxon.flags &=
1119 ~(RXON_FLG_DIS_DIV_MSK | RXON_FLG_ANT_SEL_MSK);
1120 priv->staging_rxon.flags |= iwl3945_get_antenna_flags(priv);
1121
1122 rc = iwl3945_check_rxon_cmd(&priv->staging_rxon);
1123 if (rc) {
1124 IWL_ERROR("Invalid RXON configuration. Not committing.\n");
1125 return -EINVAL;
1126 }
1127
1128 /* If we don't need to send a full RXON, we can use
1129 * iwl3945_rxon_assoc_cmd which is used to reconfigure filter
1130 * and other flags for the current radio configuration. */
1131 if (!iwl3945_full_rxon_required(priv)) {
1132 rc = iwl3945_send_rxon_assoc(priv);
1133 if (rc) {
1134 IWL_ERROR("Error setting RXON_ASSOC "
1135 "configuration (%d).\n", rc);
1136 return rc;
1137 }
1138
1139 memcpy(active_rxon, &priv->staging_rxon, sizeof(*active_rxon));
1140
1141 return 0;
1142 }
1143
1144 /* If we are currently associated and the new config requires
1145 * an RXON_ASSOC and the new config wants the associated mask enabled,
1146 * we must clear the associated from the active configuration
1147 * before we apply the new config */
1148 if (iwl3945_is_associated(priv) &&
1149 (priv->staging_rxon.filter_flags & RXON_FILTER_ASSOC_MSK)) {
1150 IWL_DEBUG_INFO("Toggling associated bit on current RXON\n");
1151 active_rxon->filter_flags &= ~RXON_FILTER_ASSOC_MSK;
1152
1153 rc = iwl3945_send_cmd_pdu(priv, REPLY_RXON,
1154 sizeof(struct iwl3945_rxon_cmd),
1155 &priv->active_rxon);
1156
1157 /* If the mask clearing failed then we set
1158 * active_rxon back to what it was previously */
1159 if (rc) {
1160 active_rxon->filter_flags |= RXON_FILTER_ASSOC_MSK;
1161 IWL_ERROR("Error clearing ASSOC_MSK on current "
1162 "configuration (%d).\n", rc);
1163 return rc;
1164 }
1165 }
1166
1167 IWL_DEBUG_INFO("Sending RXON\n"
1168 "* with%s RXON_FILTER_ASSOC_MSK\n"
1169 "* channel = %d\n"
1170 "* bssid = %s\n",
1171 ((priv->staging_rxon.filter_flags &
1172 RXON_FILTER_ASSOC_MSK) ? "" : "out"),
1173 le16_to_cpu(priv->staging_rxon.channel),
1174 print_mac(mac, priv->staging_rxon.bssid_addr));
1175
1176 /* Apply the new configuration */
1177 rc = iwl3945_send_cmd_pdu(priv, REPLY_RXON,
1178 sizeof(struct iwl3945_rxon_cmd), &priv->staging_rxon);
1179 if (rc) {
1180 IWL_ERROR("Error setting new configuration (%d).\n", rc);
1181 return rc;
1182 }
1183
1184 memcpy(active_rxon, &priv->staging_rxon, sizeof(*active_rxon));
1185
1186 iwl3945_clear_stations_table(priv);
1187
1188 /* If we issue a new RXON command which required a tune then we must
1189 * send a new TXPOWER command or we won't be able to Tx any frames */
1190 rc = iwl3945_hw_reg_send_txpower(priv);
1191 if (rc) {
1192 IWL_ERROR("Error setting Tx power (%d).\n", rc);
1193 return rc;
1194 }
1195
1196 /* Add the broadcast address so we can send broadcast frames */
1197 if (iwl3945_add_station(priv, iwl3945_broadcast_addr, 0, 0) ==
1198 IWL_INVALID_STATION) {
1199 IWL_ERROR("Error adding BROADCAST address for transmit.\n");
1200 return -EIO;
1201 }
1202
1203 /* If we have set the ASSOC_MSK and we are in BSS mode then
1204 * add the IWL_AP_ID to the station rate table */
1205 if (iwl3945_is_associated(priv) &&
1206 (priv->iw_mode == IEEE80211_IF_TYPE_STA))
1207 if (iwl3945_add_station(priv, priv->active_rxon.bssid_addr, 1, 0)
1208 == IWL_INVALID_STATION) {
1209 IWL_ERROR("Error adding AP address for transmit.\n");
1210 return -EIO;
1211 }
1212
1213 /* Init the hardware's rate fallback order based on the
1214 * phymode */
1215 rc = iwl3945_init_hw_rate_table(priv);
1216 if (rc) {
1217 IWL_ERROR("Error setting HW rate table: %02X\n", rc);
1218 return -EIO;
1219 }
1220
1221 return 0;
1222 }
1223
1224 static int iwl3945_send_bt_config(struct iwl3945_priv *priv)
1225 {
1226 struct iwl3945_bt_cmd bt_cmd = {
1227 .flags = 3,
1228 .lead_time = 0xAA,
1229 .max_kill = 1,
1230 .kill_ack_mask = 0,
1231 .kill_cts_mask = 0,
1232 };
1233
1234 return iwl3945_send_cmd_pdu(priv, REPLY_BT_CONFIG,
1235 sizeof(struct iwl3945_bt_cmd), &bt_cmd);
1236 }
1237
1238 static int iwl3945_send_scan_abort(struct iwl3945_priv *priv)
1239 {
1240 int rc = 0;
1241 struct iwl3945_rx_packet *res;
1242 struct iwl3945_host_cmd cmd = {
1243 .id = REPLY_SCAN_ABORT_CMD,
1244 .meta.flags = CMD_WANT_SKB,
1245 };
1246
1247 /* If there isn't a scan actively going on in the hardware
1248 * then we are in between scan bands and not actually
1249 * actively scanning, so don't send the abort command */
1250 if (!test_bit(STATUS_SCAN_HW, &priv->status)) {
1251 clear_bit(STATUS_SCAN_ABORTING, &priv->status);
1252 return 0;
1253 }
1254
1255 rc = iwl3945_send_cmd_sync(priv, &cmd);
1256 if (rc) {
1257 clear_bit(STATUS_SCAN_ABORTING, &priv->status);
1258 return rc;
1259 }
1260
1261 res = (struct iwl3945_rx_packet *)cmd.meta.u.skb->data;
1262 if (res->u.status != CAN_ABORT_STATUS) {
1263 /* The scan abort will return 1 for success or
1264 * 2 for "failure". A failure condition can be
1265 * due to simply not being in an active scan which
1266 * can occur if we send the scan abort before we
1267 * the microcode has notified us that a scan is
1268 * completed. */
1269 IWL_DEBUG_INFO("SCAN_ABORT returned %d.\n", res->u.status);
1270 clear_bit(STATUS_SCAN_ABORTING, &priv->status);
1271 clear_bit(STATUS_SCAN_HW, &priv->status);
1272 }
1273
1274 dev_kfree_skb_any(cmd.meta.u.skb);
1275
1276 return rc;
1277 }
1278
1279 static int iwl3945_card_state_sync_callback(struct iwl3945_priv *priv,
1280 struct iwl3945_cmd *cmd,
1281 struct sk_buff *skb)
1282 {
1283 return 1;
1284 }
1285
1286 /*
1287 * CARD_STATE_CMD
1288 *
1289 * Use: Sets the device's internal card state to enable, disable, or halt
1290 *
1291 * When in the 'enable' state the card operates as normal.
1292 * When in the 'disable' state, the card enters into a low power mode.
1293 * When in the 'halt' state, the card is shut down and must be fully
1294 * restarted to come back on.
1295 */
1296 static int iwl3945_send_card_state(struct iwl3945_priv *priv, u32 flags, u8 meta_flag)
1297 {
1298 struct iwl3945_host_cmd cmd = {
1299 .id = REPLY_CARD_STATE_CMD,
1300 .len = sizeof(u32),
1301 .data = &flags,
1302 .meta.flags = meta_flag,
1303 };
1304
1305 if (meta_flag & CMD_ASYNC)
1306 cmd.meta.u.callback = iwl3945_card_state_sync_callback;
1307
1308 return iwl3945_send_cmd(priv, &cmd);
1309 }
1310
1311 static int iwl3945_add_sta_sync_callback(struct iwl3945_priv *priv,
1312 struct iwl3945_cmd *cmd, struct sk_buff *skb)
1313 {
1314 struct iwl3945_rx_packet *res = NULL;
1315
1316 if (!skb) {
1317 IWL_ERROR("Error: Response NULL in REPLY_ADD_STA.\n");
1318 return 1;
1319 }
1320
1321 res = (struct iwl3945_rx_packet *)skb->data;
1322 if (res->hdr.flags & IWL_CMD_FAILED_MSK) {
1323 IWL_ERROR("Bad return from REPLY_ADD_STA (0x%08X)\n",
1324 res->hdr.flags);
1325 return 1;
1326 }
1327
1328 switch (res->u.add_sta.status) {
1329 case ADD_STA_SUCCESS_MSK:
1330 break;
1331 default:
1332 break;
1333 }
1334
1335 /* We didn't cache the SKB; let the caller free it */
1336 return 1;
1337 }
1338
1339 int iwl3945_send_add_station(struct iwl3945_priv *priv,
1340 struct iwl3945_addsta_cmd *sta, u8 flags)
1341 {
1342 struct iwl3945_rx_packet *res = NULL;
1343 int rc = 0;
1344 struct iwl3945_host_cmd cmd = {
1345 .id = REPLY_ADD_STA,
1346 .len = sizeof(struct iwl3945_addsta_cmd),
1347 .meta.flags = flags,
1348 .data = sta,
1349 };
1350
1351 if (flags & CMD_ASYNC)
1352 cmd.meta.u.callback = iwl3945_add_sta_sync_callback;
1353 else
1354 cmd.meta.flags |= CMD_WANT_SKB;
1355
1356 rc = iwl3945_send_cmd(priv, &cmd);
1357
1358 if (rc || (flags & CMD_ASYNC))
1359 return rc;
1360
1361 res = (struct iwl3945_rx_packet *)cmd.meta.u.skb->data;
1362 if (res->hdr.flags & IWL_CMD_FAILED_MSK) {
1363 IWL_ERROR("Bad return from REPLY_ADD_STA (0x%08X)\n",
1364 res->hdr.flags);
1365 rc = -EIO;
1366 }
1367
1368 if (rc == 0) {
1369 switch (res->u.add_sta.status) {
1370 case ADD_STA_SUCCESS_MSK:
1371 IWL_DEBUG_INFO("REPLY_ADD_STA PASSED\n");
1372 break;
1373 default:
1374 rc = -EIO;
1375 IWL_WARNING("REPLY_ADD_STA failed\n");
1376 break;
1377 }
1378 }
1379
1380 priv->alloc_rxb_skb--;
1381 dev_kfree_skb_any(cmd.meta.u.skb);
1382
1383 return rc;
1384 }
1385
1386 static int iwl3945_update_sta_key_info(struct iwl3945_priv *priv,
1387 struct ieee80211_key_conf *keyconf,
1388 u8 sta_id)
1389 {
1390 unsigned long flags;
1391 __le16 key_flags = 0;
1392
1393 switch (keyconf->alg) {
1394 case ALG_CCMP:
1395 key_flags |= STA_KEY_FLG_CCMP;
1396 key_flags |= cpu_to_le16(
1397 keyconf->keyidx << STA_KEY_FLG_KEYID_POS);
1398 key_flags &= ~STA_KEY_FLG_INVALID;
1399 break;
1400 case ALG_TKIP:
1401 case ALG_WEP:
1402 default:
1403 return -EINVAL;
1404 }
1405 spin_lock_irqsave(&priv->sta_lock, flags);
1406 priv->stations[sta_id].keyinfo.alg = keyconf->alg;
1407 priv->stations[sta_id].keyinfo.keylen = keyconf->keylen;
1408 memcpy(priv->stations[sta_id].keyinfo.key, keyconf->key,
1409 keyconf->keylen);
1410
1411 memcpy(priv->stations[sta_id].sta.key.key, keyconf->key,
1412 keyconf->keylen);
1413 priv->stations[sta_id].sta.key.key_flags = key_flags;
1414 priv->stations[sta_id].sta.sta.modify_mask = STA_MODIFY_KEY_MASK;
1415 priv->stations[sta_id].sta.mode = STA_CONTROL_MODIFY_MSK;
1416
1417 spin_unlock_irqrestore(&priv->sta_lock, flags);
1418
1419 IWL_DEBUG_INFO("hwcrypto: modify ucode station key info\n");
1420 iwl3945_send_add_station(priv, &priv->stations[sta_id].sta, 0);
1421 return 0;
1422 }
1423
1424 static int iwl3945_clear_sta_key_info(struct iwl3945_priv *priv, u8 sta_id)
1425 {
1426 unsigned long flags;
1427
1428 spin_lock_irqsave(&priv->sta_lock, flags);
1429 memset(&priv->stations[sta_id].keyinfo, 0, sizeof(struct iwl3945_hw_key));
1430 memset(&priv->stations[sta_id].sta.key, 0, sizeof(struct iwl3945_keyinfo));
1431 priv->stations[sta_id].sta.key.key_flags = STA_KEY_FLG_NO_ENC;
1432 priv->stations[sta_id].sta.sta.modify_mask = STA_MODIFY_KEY_MASK;
1433 priv->stations[sta_id].sta.mode = STA_CONTROL_MODIFY_MSK;
1434 spin_unlock_irqrestore(&priv->sta_lock, flags);
1435
1436 IWL_DEBUG_INFO("hwcrypto: clear ucode station key info\n");
1437 iwl3945_send_add_station(priv, &priv->stations[sta_id].sta, 0);
1438 return 0;
1439 }
1440
1441 static void iwl3945_clear_free_frames(struct iwl3945_priv *priv)
1442 {
1443 struct list_head *element;
1444
1445 IWL_DEBUG_INFO("%d frames on pre-allocated heap on clear.\n",
1446 priv->frames_count);
1447
1448 while (!list_empty(&priv->free_frames)) {
1449 element = priv->free_frames.next;
1450 list_del(element);
1451 kfree(list_entry(element, struct iwl3945_frame, list));
1452 priv->frames_count--;
1453 }
1454
1455 if (priv->frames_count) {
1456 IWL_WARNING("%d frames still in use. Did we lose one?\n",
1457 priv->frames_count);
1458 priv->frames_count = 0;
1459 }
1460 }
1461
1462 static struct iwl3945_frame *iwl3945_get_free_frame(struct iwl3945_priv *priv)
1463 {
1464 struct iwl3945_frame *frame;
1465 struct list_head *element;
1466 if (list_empty(&priv->free_frames)) {
1467 frame = kzalloc(sizeof(*frame), GFP_KERNEL);
1468 if (!frame) {
1469 IWL_ERROR("Could not allocate frame!\n");
1470 return NULL;
1471 }
1472
1473 priv->frames_count++;
1474 return frame;
1475 }
1476
1477 element = priv->free_frames.next;
1478 list_del(element);
1479 return list_entry(element, struct iwl3945_frame, list);
1480 }
1481
1482 static void iwl3945_free_frame(struct iwl3945_priv *priv, struct iwl3945_frame *frame)
1483 {
1484 memset(frame, 0, sizeof(*frame));
1485 list_add(&frame->list, &priv->free_frames);
1486 }
1487
1488 unsigned int iwl3945_fill_beacon_frame(struct iwl3945_priv *priv,
1489 struct ieee80211_hdr *hdr,
1490 const u8 *dest, int left)
1491 {
1492
1493 if (!iwl3945_is_associated(priv) || !priv->ibss_beacon ||
1494 ((priv->iw_mode != IEEE80211_IF_TYPE_IBSS) &&
1495 (priv->iw_mode != IEEE80211_IF_TYPE_AP)))
1496 return 0;
1497
1498 if (priv->ibss_beacon->len > left)
1499 return 0;
1500
1501 memcpy(hdr, priv->ibss_beacon->data, priv->ibss_beacon->len);
1502
1503 return priv->ibss_beacon->len;
1504 }
1505
1506 static u8 iwl3945_rate_get_lowest_plcp(int rate_mask)
1507 {
1508 u8 i;
1509
1510 for (i = IWL_RATE_1M_INDEX; i != IWL_RATE_INVALID;
1511 i = iwl3945_rates[i].next_ieee) {
1512 if (rate_mask & (1 << i))
1513 return iwl3945_rates[i].plcp;
1514 }
1515
1516 return IWL_RATE_INVALID;
1517 }
1518
1519 static int iwl3945_send_beacon_cmd(struct iwl3945_priv *priv)
1520 {
1521 struct iwl3945_frame *frame;
1522 unsigned int frame_size;
1523 int rc;
1524 u8 rate;
1525
1526 frame = iwl3945_get_free_frame(priv);
1527
1528 if (!frame) {
1529 IWL_ERROR("Could not obtain free frame buffer for beacon "
1530 "command.\n");
1531 return -ENOMEM;
1532 }
1533
1534 if (!(priv->staging_rxon.flags & RXON_FLG_BAND_24G_MSK)) {
1535 rate = iwl3945_rate_get_lowest_plcp(priv->active_rate_basic &
1536 0xFF0);
1537 if (rate == IWL_INVALID_RATE)
1538 rate = IWL_RATE_6M_PLCP;
1539 } else {
1540 rate = iwl3945_rate_get_lowest_plcp(priv->active_rate_basic & 0xF);
1541 if (rate == IWL_INVALID_RATE)
1542 rate = IWL_RATE_1M_PLCP;
1543 }
1544
1545 frame_size = iwl3945_hw_get_beacon_cmd(priv, frame, rate);
1546
1547 rc = iwl3945_send_cmd_pdu(priv, REPLY_TX_BEACON, frame_size,
1548 &frame->u.cmd[0]);
1549
1550 iwl3945_free_frame(priv, frame);
1551
1552 return rc;
1553 }
1554
1555 /******************************************************************************
1556 *
1557 * EEPROM related functions
1558 *
1559 ******************************************************************************/
1560
1561 static void get_eeprom_mac(struct iwl3945_priv *priv, u8 *mac)
1562 {
1563 memcpy(mac, priv->eeprom.mac_address, 6);
1564 }
1565
1566 /*
1567 * Clear the OWNER_MSK, to establish driver (instead of uCode running on
1568 * embedded controller) as EEPROM reader; each read is a series of pulses
1569 * to/from the EEPROM chip, not a single event, so even reads could conflict
1570 * if they weren't arbitrated by some ownership mechanism. Here, the driver
1571 * simply claims ownership, which should be safe when this function is called
1572 * (i.e. before loading uCode!).
1573 */
1574 static inline int iwl3945_eeprom_acquire_semaphore(struct iwl3945_priv *priv)
1575 {
1576 _iwl3945_clear_bit(priv, CSR_EEPROM_GP, CSR_EEPROM_GP_IF_OWNER_MSK);
1577 return 0;
1578 }
1579
1580 /**
1581 * iwl3945_eeprom_init - read EEPROM contents
1582 *
1583 * Load the EEPROM contents from adapter into priv->eeprom
1584 *
1585 * NOTE: This routine uses the non-debug IO access functions.
1586 */
1587 int iwl3945_eeprom_init(struct iwl3945_priv *priv)
1588 {
1589 u16 *e = (u16 *)&priv->eeprom;
1590 u32 gp = iwl3945_read32(priv, CSR_EEPROM_GP);
1591 u32 r;
1592 int sz = sizeof(priv->eeprom);
1593 int rc;
1594 int i;
1595 u16 addr;
1596
1597 /* The EEPROM structure has several padding buffers within it
1598 * and when adding new EEPROM maps is subject to programmer errors
1599 * which may be very difficult to identify without explicitly
1600 * checking the resulting size of the eeprom map. */
1601 BUILD_BUG_ON(sizeof(priv->eeprom) != IWL_EEPROM_IMAGE_SIZE);
1602
1603 if ((gp & CSR_EEPROM_GP_VALID_MSK) == CSR_EEPROM_GP_BAD_SIGNATURE) {
1604 IWL_ERROR("EEPROM not found, EEPROM_GP=0x%08x", gp);
1605 return -ENOENT;
1606 }
1607
1608 /* Make sure driver (instead of uCode) is allowed to read EEPROM */
1609 rc = iwl3945_eeprom_acquire_semaphore(priv);
1610 if (rc < 0) {
1611 IWL_ERROR("Failed to acquire EEPROM semaphore.\n");
1612 return -ENOENT;
1613 }
1614
1615 /* eeprom is an array of 16bit values */
1616 for (addr = 0; addr < sz; addr += sizeof(u16)) {
1617 _iwl3945_write32(priv, CSR_EEPROM_REG, addr << 1);
1618 _iwl3945_clear_bit(priv, CSR_EEPROM_REG, CSR_EEPROM_REG_BIT_CMD);
1619
1620 for (i = 0; i < IWL_EEPROM_ACCESS_TIMEOUT;
1621 i += IWL_EEPROM_ACCESS_DELAY) {
1622 r = _iwl3945_read_direct32(priv, CSR_EEPROM_REG);
1623 if (r & CSR_EEPROM_REG_READ_VALID_MSK)
1624 break;
1625 udelay(IWL_EEPROM_ACCESS_DELAY);
1626 }
1627
1628 if (!(r & CSR_EEPROM_REG_READ_VALID_MSK)) {
1629 IWL_ERROR("Time out reading EEPROM[%d]", addr);
1630 return -ETIMEDOUT;
1631 }
1632 e[addr / 2] = le16_to_cpu((__force __le16)(r >> 16));
1633 }
1634
1635 return 0;
1636 }
1637
1638 /******************************************************************************
1639 *
1640 * Misc. internal state and helper functions
1641 *
1642 ******************************************************************************/
1643 #ifdef CONFIG_IWL3945_DEBUG
1644
1645 /**
1646 * iwl3945_report_frame - dump frame to syslog during debug sessions
1647 *
1648 * You may hack this function to show different aspects of received frames,
1649 * including selective frame dumps.
1650 * group100 parameter selects whether to show 1 out of 100 good frames.
1651 */
1652 void iwl3945_report_frame(struct iwl3945_priv *priv,
1653 struct iwl3945_rx_packet *pkt,
1654 struct ieee80211_hdr *header, int group100)
1655 {
1656 u32 to_us;
1657 u32 print_summary = 0;
1658 u32 print_dump = 0; /* set to 1 to dump all frames' contents */
1659 u32 hundred = 0;
1660 u32 dataframe = 0;
1661 u16 fc;
1662 u16 seq_ctl;
1663 u16 channel;
1664 u16 phy_flags;
1665 int rate_sym;
1666 u16 length;
1667 u16 status;
1668 u16 bcn_tmr;
1669 u32 tsf_low;
1670 u64 tsf;
1671 u8 rssi;
1672 u8 agc;
1673 u16 sig_avg;
1674 u16 noise_diff;
1675 struct iwl3945_rx_frame_stats *rx_stats = IWL_RX_STATS(pkt);
1676 struct iwl3945_rx_frame_hdr *rx_hdr = IWL_RX_HDR(pkt);
1677 struct iwl3945_rx_frame_end *rx_end = IWL_RX_END(pkt);
1678 u8 *data = IWL_RX_DATA(pkt);
1679
1680 /* MAC header */
1681 fc = le16_to_cpu(header->frame_control);
1682 seq_ctl = le16_to_cpu(header->seq_ctrl);
1683
1684 /* metadata */
1685 channel = le16_to_cpu(rx_hdr->channel);
1686 phy_flags = le16_to_cpu(rx_hdr->phy_flags);
1687 rate_sym = rx_hdr->rate;
1688 length = le16_to_cpu(rx_hdr->len);
1689
1690 /* end-of-frame status and timestamp */
1691 status = le32_to_cpu(rx_end->status);
1692 bcn_tmr = le32_to_cpu(rx_end->beacon_timestamp);
1693 tsf_low = le64_to_cpu(rx_end->timestamp) & 0x0ffffffff;
1694 tsf = le64_to_cpu(rx_end->timestamp);
1695
1696 /* signal statistics */
1697 rssi = rx_stats->rssi;
1698 agc = rx_stats->agc;
1699 sig_avg = le16_to_cpu(rx_stats->sig_avg);
1700 noise_diff = le16_to_cpu(rx_stats->noise_diff);
1701
1702 to_us = !compare_ether_addr(header->addr1, priv->mac_addr);
1703
1704 /* if data frame is to us and all is good,
1705 * (optionally) print summary for only 1 out of every 100 */
1706 if (to_us && (fc & ~IEEE80211_FCTL_PROTECTED) ==
1707 (IEEE80211_FCTL_FROMDS | IEEE80211_FTYPE_DATA)) {
1708 dataframe = 1;
1709 if (!group100)
1710 print_summary = 1; /* print each frame */
1711 else if (priv->framecnt_to_us < 100) {
1712 priv->framecnt_to_us++;
1713 print_summary = 0;
1714 } else {
1715 priv->framecnt_to_us = 0;
1716 print_summary = 1;
1717 hundred = 1;
1718 }
1719 } else {
1720 /* print summary for all other frames */
1721 print_summary = 1;
1722 }
1723
1724 if (print_summary) {
1725 char *title;
1726 u32 rate;
1727
1728 if (hundred)
1729 title = "100Frames";
1730 else if (fc & IEEE80211_FCTL_RETRY)
1731 title = "Retry";
1732 else if (ieee80211_is_assoc_response(fc))
1733 title = "AscRsp";
1734 else if (ieee80211_is_reassoc_response(fc))
1735 title = "RasRsp";
1736 else if (ieee80211_is_probe_response(fc)) {
1737 title = "PrbRsp";
1738 print_dump = 1; /* dump frame contents */
1739 } else if (ieee80211_is_beacon(fc)) {
1740 title = "Beacon";
1741 print_dump = 1; /* dump frame contents */
1742 } else if (ieee80211_is_atim(fc))
1743 title = "ATIM";
1744 else if (ieee80211_is_auth(fc))
1745 title = "Auth";
1746 else if (ieee80211_is_deauth(fc))
1747 title = "DeAuth";
1748 else if (ieee80211_is_disassoc(fc))
1749 title = "DisAssoc";
1750 else
1751 title = "Frame";
1752
1753 rate = iwl3945_rate_index_from_plcp(rate_sym);
1754 if (rate == -1)
1755 rate = 0;
1756 else
1757 rate = iwl3945_rates[rate].ieee / 2;
1758
1759 /* print frame summary.
1760 * MAC addresses show just the last byte (for brevity),
1761 * but you can hack it to show more, if you'd like to. */
1762 if (dataframe)
1763 IWL_DEBUG_RX("%s: mhd=0x%04x, dst=0x%02x, "
1764 "len=%u, rssi=%d, chnl=%d, rate=%u, \n",
1765 title, fc, header->addr1[5],
1766 length, rssi, channel, rate);
1767 else {
1768 /* src/dst addresses assume managed mode */
1769 IWL_DEBUG_RX("%s: 0x%04x, dst=0x%02x, "
1770 "src=0x%02x, rssi=%u, tim=%lu usec, "
1771 "phy=0x%02x, chnl=%d\n",
1772 title, fc, header->addr1[5],
1773 header->addr3[5], rssi,
1774 tsf_low - priv->scan_start_tsf,
1775 phy_flags, channel);
1776 }
1777 }
1778 if (print_dump)
1779 iwl3945_print_hex_dump(IWL_DL_RX, data, length);
1780 }
1781 #endif
1782
1783 static void iwl3945_unset_hw_setting(struct iwl3945_priv *priv)
1784 {
1785 if (priv->hw_setting.shared_virt)
1786 pci_free_consistent(priv->pci_dev,
1787 sizeof(struct iwl3945_shared),
1788 priv->hw_setting.shared_virt,
1789 priv->hw_setting.shared_phys);
1790 }
1791
1792 /**
1793 * iwl3945_supported_rate_to_ie - fill in the supported rate in IE field
1794 *
1795 * return : set the bit for each supported rate insert in ie
1796 */
1797 static u16 iwl3945_supported_rate_to_ie(u8 *ie, u16 supported_rate,
1798 u16 basic_rate, int *left)
1799 {
1800 u16 ret_rates = 0, bit;
1801 int i;
1802 u8 *cnt = ie;
1803 u8 *rates = ie + 1;
1804
1805 for (bit = 1, i = 0; i < IWL_RATE_COUNT; i++, bit <<= 1) {
1806 if (bit & supported_rate) {
1807 ret_rates |= bit;
1808 rates[*cnt] = iwl3945_rates[i].ieee |
1809 ((bit & basic_rate) ? 0x80 : 0x00);
1810 (*cnt)++;
1811 (*left)--;
1812 if ((*left <= 0) ||
1813 (*cnt >= IWL_SUPPORTED_RATES_IE_LEN))
1814 break;
1815 }
1816 }
1817
1818 return ret_rates;
1819 }
1820
1821 /**
1822 * iwl3945_fill_probe_req - fill in all required fields and IE for probe request
1823 */
1824 static u16 iwl3945_fill_probe_req(struct iwl3945_priv *priv,
1825 struct ieee80211_mgmt *frame,
1826 int left, int is_direct)
1827 {
1828 int len = 0;
1829 u8 *pos = NULL;
1830 u16 active_rates, ret_rates, cck_rates;
1831
1832 /* Make sure there is enough space for the probe request,
1833 * two mandatory IEs and the data */
1834 left -= 24;
1835 if (left < 0)
1836 return 0;
1837 len += 24;
1838
1839 frame->frame_control = cpu_to_le16(IEEE80211_STYPE_PROBE_REQ);
1840 memcpy(frame->da, iwl3945_broadcast_addr, ETH_ALEN);
1841 memcpy(frame->sa, priv->mac_addr, ETH_ALEN);
1842 memcpy(frame->bssid, iwl3945_broadcast_addr, ETH_ALEN);
1843 frame->seq_ctrl = 0;
1844
1845 /* fill in our indirect SSID IE */
1846 /* ...next IE... */
1847
1848 left -= 2;
1849 if (left < 0)
1850 return 0;
1851 len += 2;
1852 pos = &(frame->u.probe_req.variable[0]);
1853 *pos++ = WLAN_EID_SSID;
1854 *pos++ = 0;
1855
1856 /* fill in our direct SSID IE... */
1857 if (is_direct) {
1858 /* ...next IE... */
1859 left -= 2 + priv->essid_len;
1860 if (left < 0)
1861 return 0;
1862 /* ... fill it in... */
1863 *pos++ = WLAN_EID_SSID;
1864 *pos++ = priv->essid_len;
1865 memcpy(pos, priv->essid, priv->essid_len);
1866 pos += priv->essid_len;
1867 len += 2 + priv->essid_len;
1868 }
1869
1870 /* fill in supported rate */
1871 /* ...next IE... */
1872 left -= 2;
1873 if (left < 0)
1874 return 0;
1875
1876 /* ... fill it in... */
1877 *pos++ = WLAN_EID_SUPP_RATES;
1878 *pos = 0;
1879
1880 priv->active_rate = priv->rates_mask;
1881 active_rates = priv->active_rate;
1882 priv->active_rate_basic = priv->rates_mask & IWL_BASIC_RATES_MASK;
1883
1884 cck_rates = IWL_CCK_RATES_MASK & active_rates;
1885 ret_rates = iwl3945_supported_rate_to_ie(pos, cck_rates,
1886 priv->active_rate_basic, &left);
1887 active_rates &= ~ret_rates;
1888
1889 ret_rates = iwl3945_supported_rate_to_ie(pos, active_rates,
1890 priv->active_rate_basic, &left);
1891 active_rates &= ~ret_rates;
1892
1893 len += 2 + *pos;
1894 pos += (*pos) + 1;
1895 if (active_rates == 0)
1896 goto fill_end;
1897
1898 /* fill in supported extended rate */
1899 /* ...next IE... */
1900 left -= 2;
1901 if (left < 0)
1902 return 0;
1903 /* ... fill it in... */
1904 *pos++ = WLAN_EID_EXT_SUPP_RATES;
1905 *pos = 0;
1906 iwl3945_supported_rate_to_ie(pos, active_rates,
1907 priv->active_rate_basic, &left);
1908 if (*pos > 0)
1909 len += 2 + *pos;
1910
1911 fill_end:
1912 return (u16)len;
1913 }
1914
1915 /*
1916 * QoS support
1917 */
1918 #ifdef CONFIG_IWL3945_QOS
1919 static int iwl3945_send_qos_params_command(struct iwl3945_priv *priv,
1920 struct iwl3945_qosparam_cmd *qos)
1921 {
1922
1923 return iwl3945_send_cmd_pdu(priv, REPLY_QOS_PARAM,
1924 sizeof(struct iwl3945_qosparam_cmd), qos);
1925 }
1926
1927 static void iwl3945_reset_qos(struct iwl3945_priv *priv)
1928 {
1929 u16 cw_min = 15;
1930 u16 cw_max = 1023;
1931 u8 aifs = 2;
1932 u8 is_legacy = 0;
1933 unsigned long flags;
1934 int i;
1935
1936 spin_lock_irqsave(&priv->lock, flags);
1937 priv->qos_data.qos_active = 0;
1938
1939 if (priv->iw_mode == IEEE80211_IF_TYPE_IBSS) {
1940 if (priv->qos_data.qos_enable)
1941 priv->qos_data.qos_active = 1;
1942 if (!(priv->active_rate & 0xfff0)) {
1943 cw_min = 31;
1944 is_legacy = 1;
1945 }
1946 } else if (priv->iw_mode == IEEE80211_IF_TYPE_AP) {
1947 if (priv->qos_data.qos_enable)
1948 priv->qos_data.qos_active = 1;
1949 } else if (!(priv->staging_rxon.flags & RXON_FLG_SHORT_SLOT_MSK)) {
1950 cw_min = 31;
1951 is_legacy = 1;
1952 }
1953
1954 if (priv->qos_data.qos_active)
1955 aifs = 3;
1956
1957 priv->qos_data.def_qos_parm.ac[0].cw_min = cpu_to_le16(cw_min);
1958 priv->qos_data.def_qos_parm.ac[0].cw_max = cpu_to_le16(cw_max);
1959 priv->qos_data.def_qos_parm.ac[0].aifsn = aifs;
1960 priv->qos_data.def_qos_parm.ac[0].edca_txop = 0;
1961 priv->qos_data.def_qos_parm.ac[0].reserved1 = 0;
1962
1963 if (priv->qos_data.qos_active) {
1964 i = 1;
1965 priv->qos_data.def_qos_parm.ac[i].cw_min = cpu_to_le16(cw_min);
1966 priv->qos_data.def_qos_parm.ac[i].cw_max = cpu_to_le16(cw_max);
1967 priv->qos_data.def_qos_parm.ac[i].aifsn = 7;
1968 priv->qos_data.def_qos_parm.ac[i].edca_txop = 0;
1969 priv->qos_data.def_qos_parm.ac[i].reserved1 = 0;
1970
1971 i = 2;
1972 priv->qos_data.def_qos_parm.ac[i].cw_min =
1973 cpu_to_le16((cw_min + 1) / 2 - 1);
1974 priv->qos_data.def_qos_parm.ac[i].cw_max =
1975 cpu_to_le16(cw_max);
1976 priv->qos_data.def_qos_parm.ac[i].aifsn = 2;
1977 if (is_legacy)
1978 priv->qos_data.def_qos_parm.ac[i].edca_txop =
1979 cpu_to_le16(6016);
1980 else
1981 priv->qos_data.def_qos_parm.ac[i].edca_txop =
1982 cpu_to_le16(3008);
1983 priv->qos_data.def_qos_parm.ac[i].reserved1 = 0;
1984
1985 i = 3;
1986 priv->qos_data.def_qos_parm.ac[i].cw_min =
1987 cpu_to_le16((cw_min + 1) / 4 - 1);
1988 priv->qos_data.def_qos_parm.ac[i].cw_max =
1989 cpu_to_le16((cw_max + 1) / 2 - 1);
1990 priv->qos_data.def_qos_parm.ac[i].aifsn = 2;
1991 priv->qos_data.def_qos_parm.ac[i].reserved1 = 0;
1992 if (is_legacy)
1993 priv->qos_data.def_qos_parm.ac[i].edca_txop =
1994 cpu_to_le16(3264);
1995 else
1996 priv->qos_data.def_qos_parm.ac[i].edca_txop =
1997 cpu_to_le16(1504);
1998 } else {
1999 for (i = 1; i < 4; i++) {
2000 priv->qos_data.def_qos_parm.ac[i].cw_min =
2001 cpu_to_le16(cw_min);
2002 priv->qos_data.def_qos_parm.ac[i].cw_max =
2003 cpu_to_le16(cw_max);
2004 priv->qos_data.def_qos_parm.ac[i].aifsn = aifs;
2005 priv->qos_data.def_qos_parm.ac[i].edca_txop = 0;
2006 priv->qos_data.def_qos_parm.ac[i].reserved1 = 0;
2007 }
2008 }
2009 IWL_DEBUG_QOS("set QoS to default \n");
2010
2011 spin_unlock_irqrestore(&priv->lock, flags);
2012 }
2013
2014 static void iwl3945_activate_qos(struct iwl3945_priv *priv, u8 force)
2015 {
2016 unsigned long flags;
2017
2018 if (test_bit(STATUS_EXIT_PENDING, &priv->status))
2019 return;
2020
2021 if (!priv->qos_data.qos_enable)
2022 return;
2023
2024 spin_lock_irqsave(&priv->lock, flags);
2025 priv->qos_data.def_qos_parm.qos_flags = 0;
2026
2027 if (priv->qos_data.qos_cap.q_AP.queue_request &&
2028 !priv->qos_data.qos_cap.q_AP.txop_request)
2029 priv->qos_data.def_qos_parm.qos_flags |=
2030 QOS_PARAM_FLG_TXOP_TYPE_MSK;
2031
2032 if (priv->qos_data.qos_active)
2033 priv->qos_data.def_qos_parm.qos_flags |=
2034 QOS_PARAM_FLG_UPDATE_EDCA_MSK;
2035
2036 spin_unlock_irqrestore(&priv->lock, flags);
2037
2038 if (force || iwl3945_is_associated(priv)) {
2039 IWL_DEBUG_QOS("send QoS cmd with Qos active %d \n",
2040 priv->qos_data.qos_active);
2041
2042 iwl3945_send_qos_params_command(priv,
2043 &(priv->qos_data.def_qos_parm));
2044 }
2045 }
2046
2047 #endif /* CONFIG_IWL3945_QOS */
2048 /*
2049 * Power management (not Tx power!) functions
2050 */
2051 #define MSEC_TO_USEC 1024
2052
2053 #define NOSLP __constant_cpu_to_le32(0)
2054 #define SLP IWL_POWER_DRIVER_ALLOW_SLEEP_MSK
2055 #define SLP_TIMEOUT(T) __constant_cpu_to_le32((T) * MSEC_TO_USEC)
2056 #define SLP_VEC(X0, X1, X2, X3, X4) {__constant_cpu_to_le32(X0), \
2057 __constant_cpu_to_le32(X1), \
2058 __constant_cpu_to_le32(X2), \
2059 __constant_cpu_to_le32(X3), \
2060 __constant_cpu_to_le32(X4)}
2061
2062
2063 /* default power management (not Tx power) table values */
2064 /* for tim 0-10 */
2065 static struct iwl3945_power_vec_entry range_0[IWL_POWER_AC] = {
2066 {{NOSLP, SLP_TIMEOUT(0), SLP_TIMEOUT(0), SLP_VEC(0, 0, 0, 0, 0)}, 0},
2067 {{SLP, SLP_TIMEOUT(200), SLP_TIMEOUT(500), SLP_VEC(1, 2, 3, 4, 4)}, 0},
2068 {{SLP, SLP_TIMEOUT(200), SLP_TIMEOUT(300), SLP_VEC(2, 4, 6, 7, 7)}, 0},
2069 {{SLP, SLP_TIMEOUT(50), SLP_TIMEOUT(100), SLP_VEC(2, 6, 9, 9, 10)}, 0},
2070 {{SLP, SLP_TIMEOUT(50), SLP_TIMEOUT(25), SLP_VEC(2, 7, 9, 9, 10)}, 1},
2071 {{SLP, SLP_TIMEOUT(25), SLP_TIMEOUT(25), SLP_VEC(4, 7, 10, 10, 10)}, 1}
2072 };
2073
2074 /* for tim > 10 */
2075 static struct iwl3945_power_vec_entry range_1[IWL_POWER_AC] = {
2076 {{NOSLP, SLP_TIMEOUT(0), SLP_TIMEOUT(0), SLP_VEC(0, 0, 0, 0, 0)}, 0},
2077 {{SLP, SLP_TIMEOUT(200), SLP_TIMEOUT(500),
2078 SLP_VEC(1, 2, 3, 4, 0xFF)}, 0},
2079 {{SLP, SLP_TIMEOUT(200), SLP_TIMEOUT(300),
2080 SLP_VEC(2, 4, 6, 7, 0xFF)}, 0},
2081 {{SLP, SLP_TIMEOUT(50), SLP_TIMEOUT(100),
2082 SLP_VEC(2, 6, 9, 9, 0xFF)}, 0},
2083 {{SLP, SLP_TIMEOUT(50), SLP_TIMEOUT(25), SLP_VEC(2, 7, 9, 9, 0xFF)}, 0},
2084 {{SLP, SLP_TIMEOUT(25), SLP_TIMEOUT(25),
2085 SLP_VEC(4, 7, 10, 10, 0xFF)}, 0}
2086 };
2087
2088 int iwl3945_power_init_handle(struct iwl3945_priv *priv)
2089 {
2090 int rc = 0, i;
2091 struct iwl3945_power_mgr *pow_data;
2092 int size = sizeof(struct iwl3945_power_vec_entry) * IWL_POWER_AC;
2093 u16 pci_pm;
2094
2095 IWL_DEBUG_POWER("Initialize power \n");
2096
2097 pow_data = &(priv->power_data);
2098
2099 memset(pow_data, 0, sizeof(*pow_data));
2100
2101 pow_data->active_index = IWL_POWER_RANGE_0;
2102 pow_data->dtim_val = 0xffff;
2103
2104 memcpy(&pow_data->pwr_range_0[0], &range_0[0], size);
2105 memcpy(&pow_data->pwr_range_1[0], &range_1[0], size);
2106
2107 rc = pci_read_config_word(priv->pci_dev, PCI_LINK_CTRL, &pci_pm);
2108 if (rc != 0)
2109 return 0;
2110 else {
2111 struct iwl3945_powertable_cmd *cmd;
2112
2113 IWL_DEBUG_POWER("adjust power command flags\n");
2114
2115 for (i = 0; i < IWL_POWER_AC; i++) {
2116 cmd = &pow_data->pwr_range_0[i].cmd;
2117
2118 if (pci_pm & 0x1)
2119 cmd->flags &= ~IWL_POWER_PCI_PM_MSK;
2120 else
2121 cmd->flags |= IWL_POWER_PCI_PM_MSK;
2122 }
2123 }
2124 return rc;
2125 }
2126
2127 static int iwl3945_update_power_cmd(struct iwl3945_priv *priv,
2128 struct iwl3945_powertable_cmd *cmd, u32 mode)
2129 {
2130 int rc = 0, i;
2131 u8 skip;
2132 u32 max_sleep = 0;
2133 struct iwl3945_power_vec_entry *range;
2134 u8 period = 0;
2135 struct iwl3945_power_mgr *pow_data;
2136
2137 if (mode > IWL_POWER_INDEX_5) {
2138 IWL_DEBUG_POWER("Error invalid power mode \n");
2139 return -1;
2140 }
2141 pow_data = &(priv->power_data);
2142
2143 if (pow_data->active_index == IWL_POWER_RANGE_0)
2144 range = &pow_data->pwr_range_0[0];
2145 else
2146 range = &pow_data->pwr_range_1[1];
2147
2148 memcpy(cmd, &range[mode].cmd, sizeof(struct iwl3945_powertable_cmd));
2149
2150 #ifdef IWL_MAC80211_DISABLE
2151 if (priv->assoc_network != NULL) {
2152 unsigned long flags;
2153
2154 period = priv->assoc_network->tim.tim_period;
2155 }
2156 #endif /*IWL_MAC80211_DISABLE */
2157 skip = range[mode].no_dtim;
2158
2159 if (period == 0) {
2160 period = 1;
2161 skip = 0;
2162 }
2163
2164 if (skip == 0) {
2165 max_sleep = period;
2166 cmd->flags &= ~IWL_POWER_SLEEP_OVER_DTIM_MSK;
2167 } else {
2168 __le32 slp_itrvl = cmd->sleep_interval[IWL_POWER_VEC_SIZE - 1];
2169 max_sleep = (le32_to_cpu(slp_itrvl) / period) * period;
2170 cmd->flags |= IWL_POWER_SLEEP_OVER_DTIM_MSK;
2171 }
2172
2173 for (i = 0; i < IWL_POWER_VEC_SIZE; i++) {
2174 if (le32_to_cpu(cmd->sleep_interval[i]) > max_sleep)
2175 cmd->sleep_interval[i] = cpu_to_le32(max_sleep);
2176 }
2177
2178 IWL_DEBUG_POWER("Flags value = 0x%08X\n", cmd->flags);
2179 IWL_DEBUG_POWER("Tx timeout = %u\n", le32_to_cpu(cmd->tx_data_timeout));
2180 IWL_DEBUG_POWER("Rx timeout = %u\n", le32_to_cpu(cmd->rx_data_timeout));
2181 IWL_DEBUG_POWER("Sleep interval vector = { %d , %d , %d , %d , %d }\n",
2182 le32_to_cpu(cmd->sleep_interval[0]),
2183 le32_to_cpu(cmd->sleep_interval[1]),
2184 le32_to_cpu(cmd->sleep_interval[2]),
2185 le32_to_cpu(cmd->sleep_interval[3]),
2186 le32_to_cpu(cmd->sleep_interval[4]));
2187
2188 return rc;
2189 }
2190
2191 static int iwl3945_send_power_mode(struct iwl3945_priv *priv, u32 mode)
2192 {
2193 u32 uninitialized_var(final_mode);
2194 int rc;
2195 struct iwl3945_powertable_cmd cmd;
2196
2197 /* If on battery, set to 3,
2198 * if plugged into AC power, set to CAM ("continuously aware mode"),
2199 * else user level */
2200 switch (mode) {
2201 case IWL_POWER_BATTERY:
2202 final_mode = IWL_POWER_INDEX_3;
2203 break;
2204 case IWL_POWER_AC:
2205 final_mode = IWL_POWER_MODE_CAM;
2206 break;
2207 default:
2208 final_mode = mode;
2209 break;
2210 }
2211
2212 iwl3945_update_power_cmd(priv, &cmd, final_mode);
2213
2214 rc = iwl3945_send_cmd_pdu(priv, POWER_TABLE_CMD, sizeof(cmd), &cmd);
2215
2216 if (final_mode == IWL_POWER_MODE_CAM)
2217 clear_bit(STATUS_POWER_PMI, &priv->status);
2218 else
2219 set_bit(STATUS_POWER_PMI, &priv->status);
2220
2221 return rc;
2222 }
2223
2224 int iwl3945_is_network_packet(struct iwl3945_priv *priv, struct ieee80211_hdr *header)
2225 {
2226 /* Filter incoming packets to determine if they are targeted toward
2227 * this network, discarding packets coming from ourselves */
2228 switch (priv->iw_mode) {
2229 case IEEE80211_IF_TYPE_IBSS: /* Header: Dest. | Source | BSSID */
2230 /* packets from our adapter are dropped (echo) */
2231 if (!compare_ether_addr(header->addr2, priv->mac_addr))
2232 return 0;
2233 /* {broad,multi}cast packets to our IBSS go through */
2234 if (is_multicast_ether_addr(header->addr1))
2235 return !compare_ether_addr(header->addr3, priv->bssid);
2236 /* packets to our adapter go through */
2237 return !compare_ether_addr(header->addr1, priv->mac_addr);
2238 case IEEE80211_IF_TYPE_STA: /* Header: Dest. | AP{BSSID} | Source */
2239 /* packets from our adapter are dropped (echo) */
2240 if (!compare_ether_addr(header->addr3, priv->mac_addr))
2241 return 0;
2242 /* {broad,multi}cast packets to our BSS go through */
2243 if (is_multicast_ether_addr(header->addr1))
2244 return !compare_ether_addr(header->addr2, priv->bssid);
2245 /* packets to our adapter go through */
2246 return !compare_ether_addr(header->addr1, priv->mac_addr);
2247 }
2248
2249 return 1;
2250 }
2251
2252 #define TX_STATUS_ENTRY(x) case TX_STATUS_FAIL_ ## x: return #x
2253
2254 static const char *iwl3945_get_tx_fail_reason(u32 status)
2255 {
2256 switch (status & TX_STATUS_MSK) {
2257 case TX_STATUS_SUCCESS:
2258 return "SUCCESS";
2259 TX_STATUS_ENTRY(SHORT_LIMIT);
2260 TX_STATUS_ENTRY(LONG_LIMIT);
2261 TX_STATUS_ENTRY(FIFO_UNDERRUN);
2262 TX_STATUS_ENTRY(MGMNT_ABORT);
2263 TX_STATUS_ENTRY(NEXT_FRAG);
2264 TX_STATUS_ENTRY(LIFE_EXPIRE);
2265 TX_STATUS_ENTRY(DEST_PS);
2266 TX_STATUS_ENTRY(ABORTED);
2267 TX_STATUS_ENTRY(BT_RETRY);
2268 TX_STATUS_ENTRY(STA_INVALID);
2269 TX_STATUS_ENTRY(FRAG_DROPPED);
2270 TX_STATUS_ENTRY(TID_DISABLE);
2271 TX_STATUS_ENTRY(FRAME_FLUSHED);
2272 TX_STATUS_ENTRY(INSUFFICIENT_CF_POLL);
2273 TX_STATUS_ENTRY(TX_LOCKED);
2274 TX_STATUS_ENTRY(NO_BEACON_ON_RADAR);
2275 }
2276
2277 return "UNKNOWN";
2278 }
2279
2280 /**
2281 * iwl3945_scan_cancel - Cancel any currently executing HW scan
2282 *
2283 * NOTE: priv->mutex is not required before calling this function
2284 */
2285 static int iwl3945_scan_cancel(struct iwl3945_priv *priv)
2286 {
2287 if (!test_bit(STATUS_SCAN_HW, &priv->status)) {
2288 clear_bit(STATUS_SCANNING, &priv->status);
2289 return 0;
2290 }
2291
2292 if (test_bit(STATUS_SCANNING, &priv->status)) {
2293 if (!test_bit(STATUS_SCAN_ABORTING, &priv->status)) {
2294 IWL_DEBUG_SCAN("Queuing scan abort.\n");
2295 set_bit(STATUS_SCAN_ABORTING, &priv->status);
2296 queue_work(priv->workqueue, &priv->abort_scan);
2297
2298 } else
2299 IWL_DEBUG_SCAN("Scan abort already in progress.\n");
2300
2301 return test_bit(STATUS_SCANNING, &priv->status);
2302 }
2303
2304 return 0;
2305 }
2306
2307 /**
2308 * iwl3945_scan_cancel_timeout - Cancel any currently executing HW scan
2309 * @ms: amount of time to wait (in milliseconds) for scan to abort
2310 *
2311 * NOTE: priv->mutex must be held before calling this function
2312 */
2313 static int iwl3945_scan_cancel_timeout(struct iwl3945_priv *priv, unsigned long ms)
2314 {
2315 unsigned long now = jiffies;
2316 int ret;
2317
2318 ret = iwl3945_scan_cancel(priv);
2319 if (ret && ms) {
2320 mutex_unlock(&priv->mutex);
2321 while (!time_after(jiffies, now + msecs_to_jiffies(ms)) &&
2322 test_bit(STATUS_SCANNING, &priv->status))
2323 msleep(1);
2324 mutex_lock(&priv->mutex);
2325
2326 return test_bit(STATUS_SCANNING, &priv->status);
2327 }
2328
2329 return ret;
2330 }
2331
2332 static void iwl3945_sequence_reset(struct iwl3945_priv *priv)
2333 {
2334 /* Reset ieee stats */
2335
2336 /* We don't reset the net_device_stats (ieee->stats) on
2337 * re-association */
2338
2339 priv->last_seq_num = -1;
2340 priv->last_frag_num = -1;
2341 priv->last_packet_time = 0;
2342
2343 iwl3945_scan_cancel(priv);
2344 }
2345
2346 #define MAX_UCODE_BEACON_INTERVAL 1024
2347 #define INTEL_CONN_LISTEN_INTERVAL __constant_cpu_to_le16(0xA)
2348
2349 static __le16 iwl3945_adjust_beacon_interval(u16 beacon_val)
2350 {
2351 u16 new_val = 0;
2352 u16 beacon_factor = 0;
2353
2354 beacon_factor =
2355 (beacon_val + MAX_UCODE_BEACON_INTERVAL)
2356 / MAX_UCODE_BEACON_INTERVAL;
2357 new_val = beacon_val / beacon_factor;
2358
2359 return cpu_to_le16(new_val);
2360 }
2361
2362 static void iwl3945_setup_rxon_timing(struct iwl3945_priv *priv)
2363 {
2364 u64 interval_tm_unit;
2365 u64 tsf, result;
2366 unsigned long flags;
2367 struct ieee80211_conf *conf = NULL;
2368 u16 beacon_int = 0;
2369
2370 conf = ieee80211_get_hw_conf(priv->hw);
2371
2372 spin_lock_irqsave(&priv->lock, flags);
2373 priv->rxon_timing.timestamp.dw[1] = cpu_to_le32(priv->timestamp1);
2374 priv->rxon_timing.timestamp.dw[0] = cpu_to_le32(priv->timestamp0);
2375
2376 priv->rxon_timing.listen_interval = INTEL_CONN_LISTEN_INTERVAL;
2377
2378 tsf = priv->timestamp1;
2379 tsf = ((tsf << 32) | priv->timestamp0);
2380
2381 beacon_int = priv->beacon_int;
2382 spin_unlock_irqrestore(&priv->lock, flags);
2383
2384 if (priv->iw_mode == IEEE80211_IF_TYPE_STA) {
2385 if (beacon_int == 0) {
2386 priv->rxon_timing.beacon_interval = cpu_to_le16(100);
2387 priv->rxon_timing.beacon_init_val = cpu_to_le32(102400);
2388 } else {
2389 priv->rxon_timing.beacon_interval =
2390 cpu_to_le16(beacon_int);
2391 priv->rxon_timing.beacon_interval =
2392 iwl3945_adjust_beacon_interval(
2393 le16_to_cpu(priv->rxon_timing.beacon_interval));
2394 }
2395
2396 priv->rxon_timing.atim_window = 0;
2397 } else {
2398 priv->rxon_timing.beacon_interval =
2399 iwl3945_adjust_beacon_interval(conf->beacon_int);
2400 /* TODO: we need to get atim_window from upper stack
2401 * for now we set to 0 */
2402 priv->rxon_timing.atim_window = 0;
2403 }
2404
2405 interval_tm_unit =
2406 (le16_to_cpu(priv->rxon_timing.beacon_interval) * 1024);
2407 result = do_div(tsf, interval_tm_unit);
2408 priv->rxon_timing.beacon_init_val =
2409 cpu_to_le32((u32) ((u64) interval_tm_unit - result));
2410
2411 IWL_DEBUG_ASSOC
2412 ("beacon interval %d beacon timer %d beacon tim %d\n",
2413 le16_to_cpu(priv->rxon_timing.beacon_interval),
2414 le32_to_cpu(priv->rxon_timing.beacon_init_val),
2415 le16_to_cpu(priv->rxon_timing.atim_window));
2416 }
2417
2418 static int iwl3945_scan_initiate(struct iwl3945_priv *priv)
2419 {
2420 if (priv->iw_mode == IEEE80211_IF_TYPE_AP) {
2421 IWL_ERROR("APs don't scan.\n");
2422 return 0;
2423 }
2424
2425 if (!iwl3945_is_ready_rf(priv)) {
2426 IWL_DEBUG_SCAN("Aborting scan due to not ready.\n");
2427 return -EIO;
2428 }
2429
2430 if (test_bit(STATUS_SCANNING, &priv->status)) {
2431 IWL_DEBUG_SCAN("Scan already in progress.\n");
2432 return -EAGAIN;
2433 }
2434
2435 if (test_bit(STATUS_SCAN_ABORTING, &priv->status)) {
2436 IWL_DEBUG_SCAN("Scan request while abort pending. "
2437 "Queuing.\n");
2438 return -EAGAIN;
2439 }
2440
2441 IWL_DEBUG_INFO("Starting scan...\n");
2442 priv->scan_bands = 2;
2443 set_bit(STATUS_SCANNING, &priv->status);
2444 priv->scan_start = jiffies;
2445 priv->scan_pass_start = priv->scan_start;
2446
2447 queue_work(priv->workqueue, &priv->request_scan);
2448
2449 return 0;
2450 }
2451
2452 static int iwl3945_set_rxon_hwcrypto(struct iwl3945_priv *priv, int hw_decrypt)
2453 {
2454 struct iwl3945_rxon_cmd *rxon = &priv->staging_rxon;
2455
2456 if (hw_decrypt)
2457 rxon->filter_flags &= ~RXON_FILTER_DIS_DECRYPT_MSK;
2458 else
2459 rxon->filter_flags |= RXON_FILTER_DIS_DECRYPT_MSK;
2460
2461 return 0;
2462 }
2463
2464 static void iwl3945_set_flags_for_phymode(struct iwl3945_priv *priv, u8 phymode)
2465 {
2466 if (phymode == MODE_IEEE80211A) {
2467 priv->staging_rxon.flags &=
2468 ~(RXON_FLG_BAND_24G_MSK | RXON_FLG_AUTO_DETECT_MSK
2469 | RXON_FLG_CCK_MSK);
2470 priv->staging_rxon.flags |= RXON_FLG_SHORT_SLOT_MSK;
2471 } else {
2472 /* Copied from iwl3945_bg_post_associate() */
2473 if (priv->assoc_capability & WLAN_CAPABILITY_SHORT_SLOT_TIME)
2474 priv->staging_rxon.flags |= RXON_FLG_SHORT_SLOT_MSK;
2475 else
2476 priv->staging_rxon.flags &= ~RXON_FLG_SHORT_SLOT_MSK;
2477
2478 if (priv->iw_mode == IEEE80211_IF_TYPE_IBSS)
2479 priv->staging_rxon.flags &= ~RXON_FLG_SHORT_SLOT_MSK;
2480
2481 priv->staging_rxon.flags |= RXON_FLG_BAND_24G_MSK;
2482 priv->staging_rxon.flags |= RXON_FLG_AUTO_DETECT_MSK;
2483 priv->staging_rxon.flags &= ~RXON_FLG_CCK_MSK;
2484 }
2485 }
2486
2487 /*
2488 * initialize rxon structure with default values from eeprom
2489 */
2490 static void iwl3945_connection_init_rx_config(struct iwl3945_priv *priv)
2491 {
2492 const struct iwl3945_channel_info *ch_info;
2493
2494 memset(&priv->staging_rxon, 0, sizeof(priv->staging_rxon));
2495
2496 switch (priv->iw_mode) {
2497 case IEEE80211_IF_TYPE_AP:
2498 priv->staging_rxon.dev_type = RXON_DEV_TYPE_AP;
2499 break;
2500
2501 case IEEE80211_IF_TYPE_STA:
2502 priv->staging_rxon.dev_type = RXON_DEV_TYPE_ESS;
2503 priv->staging_rxon.filter_flags = RXON_FILTER_ACCEPT_GRP_MSK;
2504 break;
2505
2506 case IEEE80211_IF_TYPE_IBSS:
2507 priv->staging_rxon.dev_type = RXON_DEV_TYPE_IBSS;
2508 priv->staging_rxon.flags = RXON_FLG_SHORT_PREAMBLE_MSK;
2509 priv->staging_rxon.filter_flags = RXON_FILTER_BCON_AWARE_MSK |
2510 RXON_FILTER_ACCEPT_GRP_MSK;
2511 break;
2512
2513 case IEEE80211_IF_TYPE_MNTR:
2514 priv->staging_rxon.dev_type = RXON_DEV_TYPE_SNIFFER;
2515 priv->staging_rxon.filter_flags = RXON_FILTER_PROMISC_MSK |
2516 RXON_FILTER_CTL2HOST_MSK | RXON_FILTER_ACCEPT_GRP_MSK;
2517 break;
2518 }
2519
2520 #if 0
2521 /* TODO: Figure out when short_preamble would be set and cache from
2522 * that */
2523 if (!hw_to_local(priv->hw)->short_preamble)
2524 priv->staging_rxon.flags &= ~RXON_FLG_SHORT_PREAMBLE_MSK;
2525 else
2526 priv->staging_rxon.flags |= RXON_FLG_SHORT_PREAMBLE_MSK;
2527 #endif
2528
2529 ch_info = iwl3945_get_channel_info(priv, priv->phymode,
2530 le16_to_cpu(priv->staging_rxon.channel));
2531
2532 if (!ch_info)
2533 ch_info = &priv->channel_info[0];
2534
2535 /*
2536 * in some case A channels are all non IBSS
2537 * in this case force B/G channel
2538 */
2539 if ((priv->iw_mode == IEEE80211_IF_TYPE_IBSS) &&
2540 !(is_channel_ibss(ch_info)))
2541 ch_info = &priv->channel_info[0];
2542
2543 priv->staging_rxon.channel = cpu_to_le16(ch_info->channel);
2544 if (is_channel_a_band(ch_info))
2545 priv->phymode = MODE_IEEE80211A;
2546 else
2547 priv->phymode = MODE_IEEE80211G;
2548
2549 iwl3945_set_flags_for_phymode(priv, priv->phymode);
2550
2551 priv->staging_rxon.ofdm_basic_rates =
2552 (IWL_OFDM_RATES_MASK >> IWL_FIRST_OFDM_RATE) & 0xFF;
2553 priv->staging_rxon.cck_basic_rates =
2554 (IWL_CCK_RATES_MASK >> IWL_FIRST_CCK_RATE) & 0xF;
2555 }
2556
2557 static int iwl3945_set_mode(struct iwl3945_priv *priv, int mode)
2558 {
2559 if (mode == IEEE80211_IF_TYPE_IBSS) {
2560 const struct iwl3945_channel_info *ch_info;
2561
2562 ch_info = iwl3945_get_channel_info(priv,
2563 priv->phymode,
2564 le16_to_cpu(priv->staging_rxon.channel));
2565
2566 if (!ch_info || !is_channel_ibss(ch_info)) {
2567 IWL_ERROR("channel %d not IBSS channel\n",
2568 le16_to_cpu(priv->staging_rxon.channel));
2569 return -EINVAL;
2570 }
2571 }
2572
2573 priv->iw_mode = mode;
2574
2575 iwl3945_connection_init_rx_config(priv);
2576 memcpy(priv->staging_rxon.node_addr, priv->mac_addr, ETH_ALEN);
2577
2578 iwl3945_clear_stations_table(priv);
2579
2580 /* dont commit rxon if rf-kill is on*/
2581 if (!iwl3945_is_ready_rf(priv))
2582 return -EAGAIN;
2583
2584 cancel_delayed_work(&priv->scan_check);
2585 if (iwl3945_scan_cancel_timeout(priv, 100)) {
2586 IWL_WARNING("Aborted scan still in progress after 100ms\n");
2587 IWL_DEBUG_MAC80211("leaving - scan abort failed.\n");
2588 return -EAGAIN;
2589 }
2590
2591 iwl3945_commit_rxon(priv);
2592
2593 return 0;
2594 }
2595
2596 static void iwl3945_build_tx_cmd_hwcrypto(struct iwl3945_priv *priv,
2597 struct ieee80211_tx_control *ctl,
2598 struct iwl3945_cmd *cmd,
2599 struct sk_buff *skb_frag,
2600 int last_frag)
2601 {
2602 struct iwl3945_hw_key *keyinfo = &priv->stations[ctl->key_idx].keyinfo;
2603
2604 switch (keyinfo->alg) {
2605 case ALG_CCMP:
2606 cmd->cmd.tx.sec_ctl = TX_CMD_SEC_CCM;
2607 memcpy(cmd->cmd.tx.key, keyinfo->key, keyinfo->keylen);
2608 IWL_DEBUG_TX("tx_cmd with aes hwcrypto\n");
2609 break;
2610
2611 case ALG_TKIP:
2612 #if 0
2613 cmd->cmd.tx.sec_ctl = TX_CMD_SEC_TKIP;
2614
2615 if (last_frag)
2616 memcpy(cmd->cmd.tx.tkip_mic.byte, skb_frag->tail - 8,
2617 8);
2618 else
2619 memset(cmd->cmd.tx.tkip_mic.byte, 0, 8);
2620 #endif
2621 break;
2622
2623 case ALG_WEP:
2624 cmd->cmd.tx.sec_ctl = TX_CMD_SEC_WEP |
2625 (ctl->key_idx & TX_CMD_SEC_MSK) << TX_CMD_SEC_SHIFT;
2626
2627 if (keyinfo->keylen == 13)
2628 cmd->cmd.tx.sec_ctl |= TX_CMD_SEC_KEY128;
2629
2630 memcpy(&cmd->cmd.tx.key[3], keyinfo->key, keyinfo->keylen);
2631
2632 IWL_DEBUG_TX("Configuring packet for WEP encryption "
2633 "with key %d\n", ctl->key_idx);
2634 break;
2635
2636 default:
2637 printk(KERN_ERR "Unknown encode alg %d\n", keyinfo->alg);
2638 break;
2639 }
2640 }
2641
2642 /*
2643 * handle build REPLY_TX command notification.
2644 */
2645 static void iwl3945_build_tx_cmd_basic(struct iwl3945_priv *priv,
2646 struct iwl3945_cmd *cmd,
2647 struct ieee80211_tx_control *ctrl,
2648 struct ieee80211_hdr *hdr,
2649 int is_unicast, u8 std_id)
2650 {
2651 __le16 *qc;
2652 u16 fc = le16_to_cpu(hdr->frame_control);
2653 __le32 tx_flags = cmd->cmd.tx.tx_flags;
2654
2655 cmd->cmd.tx.stop_time.life_time = TX_CMD_LIFE_TIME_INFINITE;
2656 if (!(ctrl->flags & IEEE80211_TXCTL_NO_ACK)) {
2657 tx_flags |= TX_CMD_FLG_ACK_MSK;
2658 if ((fc & IEEE80211_FCTL_FTYPE) == IEEE80211_FTYPE_MGMT)
2659 tx_flags |= TX_CMD_FLG_SEQ_CTL_MSK;
2660 if (ieee80211_is_probe_response(fc) &&
2661 !(le16_to_cpu(hdr->seq_ctrl) & 0xf))
2662 tx_flags |= TX_CMD_FLG_TSF_MSK;
2663 } else {
2664 tx_flags &= (~TX_CMD_FLG_ACK_MSK);
2665 tx_flags |= TX_CMD_FLG_SEQ_CTL_MSK;
2666 }
2667
2668 cmd->cmd.tx.sta_id = std_id;
2669 if (ieee80211_get_morefrag(hdr))
2670 tx_flags |= TX_CMD_FLG_MORE_FRAG_MSK;
2671
2672 qc = ieee80211_get_qos_ctrl(hdr);
2673 if (qc) {
2674 cmd->cmd.tx.tid_tspec = (u8) (le16_to_cpu(*qc) & 0xf);
2675 tx_flags &= ~TX_CMD_FLG_SEQ_CTL_MSK;
2676 } else
2677 tx_flags |= TX_CMD_FLG_SEQ_CTL_MSK;
2678
2679 if (ctrl->flags & IEEE80211_TXCTL_USE_RTS_CTS) {
2680 tx_flags |= TX_CMD_FLG_RTS_MSK;
2681 tx_flags &= ~TX_CMD_FLG_CTS_MSK;
2682 } else if (ctrl->flags & IEEE80211_TXCTL_USE_CTS_PROTECT) {
2683 tx_flags &= ~TX_CMD_FLG_RTS_MSK;
2684 tx_flags |= TX_CMD_FLG_CTS_MSK;
2685 }
2686
2687 if ((tx_flags & TX_CMD_FLG_RTS_MSK) || (tx_flags & TX_CMD_FLG_CTS_MSK))
2688 tx_flags |= TX_CMD_FLG_FULL_TXOP_PROT_MSK;
2689
2690 tx_flags &= ~(TX_CMD_FLG_ANT_SEL_MSK);
2691 if ((fc & IEEE80211_FCTL_FTYPE) == IEEE80211_FTYPE_MGMT) {
2692 if ((fc & IEEE80211_FCTL_STYPE) == IEEE80211_STYPE_ASSOC_REQ ||
2693 (fc & IEEE80211_FCTL_STYPE) == IEEE80211_STYPE_REASSOC_REQ)
2694 cmd->cmd.tx.timeout.pm_frame_timeout = cpu_to_le16(3);
2695 else
2696 cmd->cmd.tx.timeout.pm_frame_timeout = cpu_to_le16(2);
2697 } else
2698 cmd->cmd.tx.timeout.pm_frame_timeout = 0;
2699
2700 cmd->cmd.tx.driver_txop = 0;
2701 cmd->cmd.tx.tx_flags = tx_flags;
2702 cmd->cmd.tx.next_frame_len = 0;
2703 }
2704
2705 /**
2706 * iwl3945_get_sta_id - Find station's index within station table
2707 */
2708 static int iwl3945_get_sta_id(struct iwl3945_priv *priv, struct ieee80211_hdr *hdr)
2709 {
2710 int sta_id;
2711 u16 fc = le16_to_cpu(hdr->frame_control);
2712
2713 /* If this frame is broadcast or management, use broadcast station id */
2714 if (((fc & IEEE80211_FCTL_FTYPE) != IEEE80211_FTYPE_DATA) ||
2715 is_multicast_ether_addr(hdr->addr1))
2716 return priv->hw_setting.bcast_sta_id;
2717
2718 switch (priv->iw_mode) {
2719
2720 /* If we are a client station in a BSS network, use the special
2721 * AP station entry (that's the only station we communicate with) */
2722 case IEEE80211_IF_TYPE_STA:
2723 return IWL_AP_ID;
2724
2725 /* If we are an AP, then find the station, or use BCAST */
2726 case IEEE80211_IF_TYPE_AP:
2727 sta_id = iwl3945_hw_find_station(priv, hdr->addr1);
2728 if (sta_id != IWL_INVALID_STATION)
2729 return sta_id;
2730 return priv->hw_setting.bcast_sta_id;
2731
2732 /* If this frame is going out to an IBSS network, find the station,
2733 * or create a new station table entry */
2734 case IEEE80211_IF_TYPE_IBSS: {
2735 DECLARE_MAC_BUF(mac);
2736
2737 /* Create new station table entry */
2738 sta_id = iwl3945_hw_find_station(priv, hdr->addr1);
2739 if (sta_id != IWL_INVALID_STATION)
2740 return sta_id;
2741
2742 sta_id = iwl3945_add_station(priv, hdr->addr1, 0, CMD_ASYNC);
2743
2744 if (sta_id != IWL_INVALID_STATION)
2745 return sta_id;
2746
2747 IWL_DEBUG_DROP("Station %s not in station map. "
2748 "Defaulting to broadcast...\n",
2749 print_mac(mac, hdr->addr1));
2750 iwl3945_print_hex_dump(IWL_DL_DROP, (u8 *) hdr, sizeof(*hdr));
2751 return priv->hw_setting.bcast_sta_id;
2752 }
2753 default:
2754 IWL_WARNING("Unknown mode of operation: %d", priv->iw_mode);
2755 return priv->hw_setting.bcast_sta_id;
2756 }
2757 }
2758
2759 /*
2760 * start REPLY_TX command process
2761 */
2762 static int iwl3945_tx_skb(struct iwl3945_priv *priv,
2763 struct sk_buff *skb, struct ieee80211_tx_control *ctl)
2764 {
2765 struct ieee80211_hdr *hdr = (struct ieee80211_hdr *)skb->data;
2766 struct iwl3945_tfd_frame *tfd;
2767 u32 *control_flags;
2768 int txq_id = ctl->queue;
2769 struct iwl3945_tx_queue *txq = NULL;
2770 struct iwl3945_queue *q = NULL;
2771 dma_addr_t phys_addr;
2772 dma_addr_t txcmd_phys;
2773 struct iwl3945_cmd *out_cmd = NULL;
2774 u16 len, idx, len_org;
2775 u8 id, hdr_len, unicast;
2776 u8 sta_id;
2777 u16 seq_number = 0;
2778 u16 fc;
2779 __le16 *qc;
2780 u8 wait_write_ptr = 0;
2781 unsigned long flags;
2782 int rc;
2783
2784 spin_lock_irqsave(&priv->lock, flags);
2785 if (iwl3945_is_rfkill(priv)) {
2786 IWL_DEBUG_DROP("Dropping - RF KILL\n");
2787 goto drop_unlock;
2788 }
2789
2790 if (!priv->vif) {
2791 IWL_DEBUG_DROP("Dropping - !priv->vif\n");
2792 goto drop_unlock;
2793 }
2794
2795 if ((ctl->tx_rate & 0xFF) == IWL_INVALID_RATE) {
2796 IWL_ERROR("ERROR: No TX rate available.\n");
2797 goto drop_unlock;
2798 }
2799
2800 unicast = !is_multicast_ether_addr(hdr->addr1);
2801 id = 0;
2802
2803 fc = le16_to_cpu(hdr->frame_control);
2804
2805 #ifdef CONFIG_IWL3945_DEBUG
2806 if (ieee80211_is_auth(fc))
2807 IWL_DEBUG_TX("Sending AUTH frame\n");
2808 else if (ieee80211_is_assoc_request(fc))
2809 IWL_DEBUG_TX("Sending ASSOC frame\n");
2810 else if (ieee80211_is_reassoc_request(fc))
2811 IWL_DEBUG_TX("Sending REASSOC frame\n");
2812 #endif
2813
2814 /* drop all data frame if we are not associated */
2815 if ((!iwl3945_is_associated(priv) ||
2816 ((priv->iw_mode == IEEE80211_IF_TYPE_STA) && !priv->assoc_id)) &&
2817 ((fc & IEEE80211_FCTL_FTYPE) == IEEE80211_FTYPE_DATA)) {
2818 IWL_DEBUG_DROP("Dropping - !iwl3945_is_associated\n");
2819 goto drop_unlock;
2820 }
2821
2822 spin_unlock_irqrestore(&priv->lock, flags);
2823
2824 hdr_len = ieee80211_get_hdrlen(fc);
2825
2826 /* Find (or create) index into station table for destination station */
2827 sta_id = iwl3945_get_sta_id(priv, hdr);
2828 if (sta_id == IWL_INVALID_STATION) {
2829 DECLARE_MAC_BUF(mac);
2830
2831 IWL_DEBUG_DROP("Dropping - INVALID STATION: %s\n",
2832 print_mac(mac, hdr->addr1));
2833 goto drop;
2834 }
2835
2836 IWL_DEBUG_RATE("station Id %d\n", sta_id);
2837
2838 qc = ieee80211_get_qos_ctrl(hdr);
2839 if (qc) {
2840 u8 tid = (u8)(le16_to_cpu(*qc) & 0xf);
2841 seq_number = priv->stations[sta_id].tid[tid].seq_number &
2842 IEEE80211_SCTL_SEQ;
2843 hdr->seq_ctrl = cpu_to_le16(seq_number) |
2844 (hdr->seq_ctrl &
2845 __constant_cpu_to_le16(IEEE80211_SCTL_FRAG));
2846 seq_number += 0x10;
2847 }
2848
2849 /* Descriptor for chosen Tx queue */
2850 txq = &priv->txq[txq_id];
2851 q = &txq->q;
2852
2853 spin_lock_irqsave(&priv->lock, flags);
2854
2855 /* Set up first empty TFD within this queue's circular TFD buffer */
2856 tfd = &txq->bd[q->write_ptr];
2857 memset(tfd, 0, sizeof(*tfd));
2858 control_flags = (u32 *) tfd;
2859 idx = get_cmd_index(q, q->write_ptr, 0);
2860
2861 /* Set up driver data for this TFD */
2862 memset(&(txq->txb[q->write_ptr]), 0, sizeof(struct iwl3945_tx_info));
2863 txq->txb[q->write_ptr].skb[0] = skb;
2864 memcpy(&(txq->txb[q->write_ptr].status.control),
2865 ctl, sizeof(struct ieee80211_tx_control));
2866
2867 /* Init first empty entry in queue's array of Tx/cmd buffers */
2868 out_cmd = &txq->cmd[idx];
2869 memset(&out_cmd->hdr, 0, sizeof(out_cmd->hdr));
2870 memset(&out_cmd->cmd.tx, 0, sizeof(out_cmd->cmd.tx));
2871
2872 /*
2873 * Set up the Tx-command (not MAC!) header.
2874 * Store the chosen Tx queue and TFD index within the sequence field;
2875 * after Tx, uCode's Tx response will return this value so driver can
2876 * locate the frame within the tx queue and do post-tx processing.
2877 */
2878 out_cmd->hdr.cmd = REPLY_TX;
2879 out_cmd->hdr.sequence = cpu_to_le16((u16)(QUEUE_TO_SEQ(txq_id) |
2880 INDEX_TO_SEQ(q->write_ptr)));
2881
2882 /* Copy MAC header from skb into command buffer */
2883 memcpy(out_cmd->cmd.tx.hdr, hdr, hdr_len);
2884
2885 /*
2886 * Use the first empty entry in this queue's command buffer array
2887 * to contain the Tx command and MAC header concatenated together
2888 * (payload data will be in another buffer).
2889 * Size of this varies, due to varying MAC header length.
2890 * If end is not dword aligned, we'll have 2 extra bytes at the end
2891 * of the MAC header (device reads on dword boundaries).
2892 * We'll tell device about this padding later.
2893 */
2894 len = priv->hw_setting.tx_cmd_len +
2895 sizeof(struct iwl3945_cmd_header) + hdr_len;
2896
2897 len_org = len;
2898 len = (len + 3) & ~3;
2899
2900 if (len_org != len)
2901 len_org = 1;
2902 else
2903 len_org = 0;
2904
2905 /* Physical address of this Tx command's header (not MAC header!),
2906 * within command buffer array. */
2907 txcmd_phys = txq->dma_addr_cmd + sizeof(struct iwl3945_cmd) * idx +
2908 offsetof(struct iwl3945_cmd, hdr);
2909
2910 /* Add buffer containing Tx command and MAC(!) header to TFD's
2911 * first entry */
2912 iwl3945_hw_txq_attach_buf_to_tfd(priv, tfd, txcmd_phys, len);
2913
2914 if (!(ctl->flags & IEEE80211_TXCTL_DO_NOT_ENCRYPT))
2915 iwl3945_build_tx_cmd_hwcrypto(priv, ctl, out_cmd, skb, 0);
2916
2917 /* Set up TFD's 2nd entry to point directly to remainder of skb,
2918 * if any (802.11 null frames have no payload). */
2919 len = skb->len - hdr_len;
2920 if (len) {
2921 phys_addr = pci_map_single(priv->pci_dev, skb->data + hdr_len,
2922 len, PCI_DMA_TODEVICE);
2923 iwl3945_hw_txq_attach_buf_to_tfd(priv, tfd, phys_addr, len);
2924 }
2925
2926 if (!len)
2927 /* If there is no payload, then we use only one Tx buffer */
2928 *control_flags = TFD_CTL_COUNT_SET(1);
2929 else
2930 /* Else use 2 buffers.
2931 * Tell 3945 about any padding after MAC header */
2932 *control_flags = TFD_CTL_COUNT_SET(2) |
2933 TFD_CTL_PAD_SET(U32_PAD(len));
2934
2935 /* Total # bytes to be transmitted */
2936 len = (u16)skb->len;
2937 out_cmd->cmd.tx.len = cpu_to_le16(len);
2938
2939 /* TODO need this for burst mode later on */
2940 iwl3945_build_tx_cmd_basic(priv, out_cmd, ctl, hdr, unicast, sta_id);
2941
2942 /* set is_hcca to 0; it probably will never be implemented */
2943 iwl3945_hw_build_tx_cmd_rate(priv, out_cmd, ctl, hdr, sta_id, 0);
2944
2945 out_cmd->cmd.tx.tx_flags &= ~TX_CMD_FLG_ANT_A_MSK;
2946 out_cmd->cmd.tx.tx_flags &= ~TX_CMD_FLG_ANT_B_MSK;
2947
2948 if (!ieee80211_get_morefrag(hdr)) {
2949 txq->need_update = 1;
2950 if (qc) {
2951 u8 tid = (u8)(le16_to_cpu(*qc) & 0xf);
2952 priv->stations[sta_id].tid[tid].seq_number = seq_number;
2953 }
2954 } else {
2955 wait_write_ptr = 1;
2956 txq->need_update = 0;
2957 }
2958
2959 iwl3945_print_hex_dump(IWL_DL_TX, out_cmd->cmd.payload,
2960 sizeof(out_cmd->cmd.tx));
2961
2962 iwl3945_print_hex_dump(IWL_DL_TX, (u8 *)out_cmd->cmd.tx.hdr,
2963 ieee80211_get_hdrlen(fc));
2964
2965 /* Tell device the write index *just past* this latest filled TFD */
2966 q->write_ptr = iwl3945_queue_inc_wrap(q->write_ptr, q->n_bd);
2967 rc = iwl3945_tx_queue_update_write_ptr(priv, txq);
2968 spin_unlock_irqrestore(&priv->lock, flags);
2969
2970 if (rc)
2971 return rc;
2972
2973 if ((iwl3945_queue_space(q) < q->high_mark)
2974 && priv->mac80211_registered) {
2975 if (wait_write_ptr) {
2976 spin_lock_irqsave(&priv->lock, flags);
2977 txq->need_update = 1;
2978 iwl3945_tx_queue_update_write_ptr(priv, txq);
2979 spin_unlock_irqrestore(&priv->lock, flags);
2980 }
2981
2982 ieee80211_stop_queue(priv->hw, ctl->queue);
2983 }
2984
2985 return 0;
2986
2987 drop_unlock:
2988 spin_unlock_irqrestore(&priv->lock, flags);
2989 drop:
2990 return -1;
2991 }
2992
2993 static void iwl3945_set_rate(struct iwl3945_priv *priv)
2994 {
2995 const struct ieee80211_hw_mode *hw = NULL;
2996 struct ieee80211_rate *rate;
2997 int i;
2998
2999 hw = iwl3945_get_hw_mode(priv, priv->phymode);
3000 if (!hw) {
3001 IWL_ERROR("Failed to set rate: unable to get hw mode\n");
3002 return;
3003 }
3004
3005 priv->active_rate = 0;
3006 priv->active_rate_basic = 0;
3007
3008 IWL_DEBUG_RATE("Setting rates for 802.11%c\n",
3009 hw->mode == MODE_IEEE80211A ?
3010 'a' : ((hw->mode == MODE_IEEE80211B) ? 'b' : 'g'));
3011
3012 for (i = 0; i < hw->num_rates; i++) {
3013 rate = &(hw->rates[i]);
3014 if ((rate->val < IWL_RATE_COUNT) &&
3015 (rate->flags & IEEE80211_RATE_SUPPORTED)) {
3016 IWL_DEBUG_RATE("Adding rate index %d (plcp %d)%s\n",
3017 rate->val, iwl3945_rates[rate->val].plcp,
3018 (rate->flags & IEEE80211_RATE_BASIC) ?
3019 "*" : "");
3020 priv->active_rate |= (1 << rate->val);
3021 if (rate->flags & IEEE80211_RATE_BASIC)
3022 priv->active_rate_basic |= (1 << rate->val);
3023 } else
3024 IWL_DEBUG_RATE("Not adding rate %d (plcp %d)\n",
3025 rate->val, iwl3945_rates[rate->val].plcp);
3026 }
3027
3028 IWL_DEBUG_RATE("Set active_rate = %0x, active_rate_basic = %0x\n",
3029 priv->active_rate, priv->active_rate_basic);
3030
3031 /*
3032 * If a basic rate is configured, then use it (adding IWL_RATE_1M_MASK)
3033 * otherwise set it to the default of all CCK rates and 6, 12, 24 for
3034 * OFDM
3035 */
3036 if (priv->active_rate_basic & IWL_CCK_BASIC_RATES_MASK)
3037 priv->staging_rxon.cck_basic_rates =
3038 ((priv->active_rate_basic &
3039 IWL_CCK_RATES_MASK) >> IWL_FIRST_CCK_RATE) & 0xF;
3040 else
3041 priv->staging_rxon.cck_basic_rates =
3042 (IWL_CCK_BASIC_RATES_MASK >> IWL_FIRST_CCK_RATE) & 0xF;
3043
3044 if (priv->active_rate_basic & IWL_OFDM_BASIC_RATES_MASK)
3045 priv->staging_rxon.ofdm_basic_rates =
3046 ((priv->active_rate_basic &
3047 (IWL_OFDM_BASIC_RATES_MASK | IWL_RATE_6M_MASK)) >>
3048 IWL_FIRST_OFDM_RATE) & 0xFF;
3049 else
3050 priv->staging_rxon.ofdm_basic_rates =
3051 (IWL_OFDM_BASIC_RATES_MASK >> IWL_FIRST_OFDM_RATE) & 0xFF;
3052 }
3053
3054 static void iwl3945_radio_kill_sw(struct iwl3945_priv *priv, int disable_radio)
3055 {
3056 unsigned long flags;
3057
3058 if (!!disable_radio == test_bit(STATUS_RF_KILL_SW, &priv->status))
3059 return;
3060
3061 IWL_DEBUG_RF_KILL("Manual SW RF KILL set to: RADIO %s\n",
3062 disable_radio ? "OFF" : "ON");
3063
3064 if (disable_radio) {
3065 iwl3945_scan_cancel(priv);
3066 /* FIXME: This is a workaround for AP */
3067 if (priv->iw_mode != IEEE80211_IF_TYPE_AP) {
3068 spin_lock_irqsave(&priv->lock, flags);
3069 iwl3945_write32(priv, CSR_UCODE_DRV_GP1_SET,
3070 CSR_UCODE_SW_BIT_RFKILL);
3071 spin_unlock_irqrestore(&priv->lock, flags);
3072 iwl3945_send_card_state(priv, CARD_STATE_CMD_DISABLE, 0);
3073 set_bit(STATUS_RF_KILL_SW, &priv->status);
3074 }
3075 return;
3076 }
3077
3078 spin_lock_irqsave(&priv->lock, flags);
3079 iwl3945_write32(priv, CSR_UCODE_DRV_GP1_CLR, CSR_UCODE_SW_BIT_RFKILL);
3080
3081 clear_bit(STATUS_RF_KILL_SW, &priv->status);
3082 spin_unlock_irqrestore(&priv->lock, flags);
3083
3084 /* wake up ucode */
3085 msleep(10);
3086
3087 spin_lock_irqsave(&priv->lock, flags);
3088 iwl3945_read32(priv, CSR_UCODE_DRV_GP1);
3089 if (!iwl3945_grab_nic_access(priv))
3090 iwl3945_release_nic_access(priv);
3091 spin_unlock_irqrestore(&priv->lock, flags);
3092
3093 if (test_bit(STATUS_RF_KILL_HW, &priv->status)) {
3094 IWL_DEBUG_RF_KILL("Can not turn radio back on - "
3095 "disabled by HW switch\n");
3096 return;
3097 }
3098
3099 queue_work(priv->workqueue, &priv->restart);
3100 return;
3101 }
3102
3103 void iwl3945_set_decrypted_flag(struct iwl3945_priv *priv, struct sk_buff *skb,
3104 u32 decrypt_res, struct ieee80211_rx_status *stats)
3105 {
3106 u16 fc =
3107 le16_to_cpu(((struct ieee80211_hdr *)skb->data)->frame_control);
3108
3109 if (priv->active_rxon.filter_flags & RXON_FILTER_DIS_DECRYPT_MSK)
3110 return;
3111
3112 if (!(fc & IEEE80211_FCTL_PROTECTED))
3113 return;
3114
3115 IWL_DEBUG_RX("decrypt_res:0x%x\n", decrypt_res);
3116 switch (decrypt_res & RX_RES_STATUS_SEC_TYPE_MSK) {
3117 case RX_RES_STATUS_SEC_TYPE_TKIP:
3118 if ((decrypt_res & RX_RES_STATUS_DECRYPT_TYPE_MSK) ==
3119 RX_RES_STATUS_BAD_ICV_MIC)
3120 stats->flag |= RX_FLAG_MMIC_ERROR;
3121 case RX_RES_STATUS_SEC_TYPE_WEP:
3122 case RX_RES_STATUS_SEC_TYPE_CCMP:
3123 if ((decrypt_res & RX_RES_STATUS_DECRYPT_TYPE_MSK) ==
3124 RX_RES_STATUS_DECRYPT_OK) {
3125 IWL_DEBUG_RX("hw decrypt successfully!!!\n");
3126 stats->flag |= RX_FLAG_DECRYPTED;
3127 }
3128 break;
3129
3130 default:
3131 break;
3132 }
3133 }
3134
3135 #define IWL_PACKET_RETRY_TIME HZ
3136
3137 int iwl3945_is_duplicate_packet(struct iwl3945_priv *priv, struct ieee80211_hdr *header)
3138 {
3139 u16 sc = le16_to_cpu(header->seq_ctrl);
3140 u16 seq = (sc & IEEE80211_SCTL_SEQ) >> 4;
3141 u16 frag = sc & IEEE80211_SCTL_FRAG;
3142 u16 *last_seq, *last_frag;
3143 unsigned long *last_time;
3144
3145 switch (priv->iw_mode) {
3146 case IEEE80211_IF_TYPE_IBSS:{
3147 struct list_head *p;
3148 struct iwl3945_ibss_seq *entry = NULL;
3149 u8 *mac = header->addr2;
3150 int index = mac[5] & (IWL_IBSS_MAC_HASH_SIZE - 1);
3151
3152 __list_for_each(p, &priv->ibss_mac_hash[index]) {
3153 entry = list_entry(p, struct iwl3945_ibss_seq, list);
3154 if (!compare_ether_addr(entry->mac, mac))
3155 break;
3156 }
3157 if (p == &priv->ibss_mac_hash[index]) {
3158 entry = kzalloc(sizeof(*entry), GFP_ATOMIC);
3159 if (!entry) {
3160 IWL_ERROR("Cannot malloc new mac entry\n");
3161 return 0;
3162 }
3163 memcpy(entry->mac, mac, ETH_ALEN);
3164 entry->seq_num = seq;
3165 entry->frag_num = frag;
3166 entry->packet_time = jiffies;
3167 list_add(&entry->list, &priv->ibss_mac_hash[index]);
3168 return 0;
3169 }
3170 last_seq = &entry->seq_num;
3171 last_frag = &entry->frag_num;
3172 last_time = &entry->packet_time;
3173 break;
3174 }
3175 case IEEE80211_IF_TYPE_STA:
3176 last_seq = &priv->last_seq_num;
3177 last_frag = &priv->last_frag_num;
3178 last_time = &priv->last_packet_time;
3179 break;
3180 default:
3181 return 0;
3182 }
3183 if ((*last_seq == seq) &&
3184 time_after(*last_time + IWL_PACKET_RETRY_TIME, jiffies)) {
3185 if (*last_frag == frag)
3186 goto drop;
3187 if (*last_frag + 1 != frag)
3188 /* out-of-order fragment */
3189 goto drop;
3190 } else
3191 *last_seq = seq;
3192
3193 *last_frag = frag;
3194 *last_time = jiffies;
3195 return 0;
3196
3197 drop:
3198 return 1;
3199 }
3200
3201 #ifdef CONFIG_IWL3945_SPECTRUM_MEASUREMENT
3202
3203 #include "iwl-spectrum.h"
3204
3205 #define BEACON_TIME_MASK_LOW 0x00FFFFFF
3206 #define BEACON_TIME_MASK_HIGH 0xFF000000
3207 #define TIME_UNIT 1024
3208
3209 /*
3210 * extended beacon time format
3211 * time in usec will be changed into a 32-bit value in 8:24 format
3212 * the high 1 byte is the beacon counts
3213 * the lower 3 bytes is the time in usec within one beacon interval
3214 */
3215
3216 static u32 iwl3945_usecs_to_beacons(u32 usec, u32 beacon_interval)
3217 {
3218 u32 quot;
3219 u32 rem;
3220 u32 interval = beacon_interval * 1024;
3221
3222 if (!interval || !usec)
3223 return 0;
3224
3225 quot = (usec / interval) & (BEACON_TIME_MASK_HIGH >> 24);
3226 rem = (usec % interval) & BEACON_TIME_MASK_LOW;
3227
3228 return (quot << 24) + rem;
3229 }
3230
3231 /* base is usually what we get from ucode with each received frame,
3232 * the same as HW timer counter counting down
3233 */
3234
3235 static __le32 iwl3945_add_beacon_time(u32 base, u32 addon, u32 beacon_interval)
3236 {
3237 u32 base_low = base & BEACON_TIME_MASK_LOW;
3238 u32 addon_low = addon & BEACON_TIME_MASK_LOW;
3239 u32 interval = beacon_interval * TIME_UNIT;
3240 u32 res = (base & BEACON_TIME_MASK_HIGH) +
3241 (addon & BEACON_TIME_MASK_HIGH);
3242
3243 if (base_low > addon_low)
3244 res += base_low - addon_low;
3245 else if (base_low < addon_low) {
3246 res += interval + base_low - addon_low;
3247 res += (1 << 24);
3248 } else
3249 res += (1 << 24);
3250
3251 return cpu_to_le32(res);
3252 }
3253
3254 static int iwl3945_get_measurement(struct iwl3945_priv *priv,
3255 struct ieee80211_measurement_params *params,
3256 u8 type)
3257 {
3258 struct iwl3945_spectrum_cmd spectrum;
3259 struct iwl3945_rx_packet *res;
3260 struct iwl3945_host_cmd cmd = {
3261 .id = REPLY_SPECTRUM_MEASUREMENT_CMD,
3262 .data = (void *)&spectrum,
3263 .meta.flags = CMD_WANT_SKB,
3264 };
3265 u32 add_time = le64_to_cpu(params->start_time);
3266 int rc;
3267 int spectrum_resp_status;
3268 int duration = le16_to_cpu(params->duration);
3269
3270 if (iwl3945_is_associated(priv))
3271 add_time =
3272 iwl3945_usecs_to_beacons(
3273 le64_to_cpu(params->start_time) - priv->last_tsf,
3274 le16_to_cpu(priv->rxon_timing.beacon_interval));
3275
3276 memset(&spectrum, 0, sizeof(spectrum));
3277
3278 spectrum.channel_count = cpu_to_le16(1);
3279 spectrum.flags =
3280 RXON_FLG_TSF2HOST_MSK | RXON_FLG_ANT_A_MSK | RXON_FLG_DIS_DIV_MSK;
3281 spectrum.filter_flags = MEASUREMENT_FILTER_FLAG;
3282 cmd.len = sizeof(spectrum);
3283 spectrum.len = cpu_to_le16(cmd.len - sizeof(spectrum.len));
3284
3285 if (iwl3945_is_associated(priv))
3286 spectrum.start_time =
3287 iwl3945_add_beacon_time(priv->last_beacon_time,
3288 add_time,
3289 le16_to_cpu(priv->rxon_timing.beacon_interval));
3290 else
3291 spectrum.start_time = 0;
3292
3293 spectrum.channels[0].duration = cpu_to_le32(duration * TIME_UNIT);
3294 spectrum.channels[0].channel = params->channel;
3295 spectrum.channels[0].type = type;
3296 if (priv->active_rxon.flags & RXON_FLG_BAND_24G_MSK)
3297 spectrum.flags |= RXON_FLG_BAND_24G_MSK |
3298 RXON_FLG_AUTO_DETECT_MSK | RXON_FLG_TGG_PROTECT_MSK;
3299
3300 rc = iwl3945_send_cmd_sync(priv, &cmd);
3301 if (rc)
3302 return rc;
3303
3304 res = (struct iwl3945_rx_packet *)cmd.meta.u.skb->data;
3305 if (res->hdr.flags & IWL_CMD_FAILED_MSK) {
3306 IWL_ERROR("Bad return from REPLY_RX_ON_ASSOC command\n");
3307 rc = -EIO;
3308 }
3309
3310 spectrum_resp_status = le16_to_cpu(res->u.spectrum.status);
3311 switch (spectrum_resp_status) {
3312 case 0: /* Command will be handled */
3313 if (res->u.spectrum.id != 0xff) {
3314 IWL_DEBUG_INFO("Replaced existing measurement: %d\n",
3315 res->u.spectrum.id);
3316 priv->measurement_status &= ~MEASUREMENT_READY;
3317 }
3318 priv->measurement_status |= MEASUREMENT_ACTIVE;
3319 rc = 0;
3320 break;
3321
3322 case 1: /* Command will not be handled */
3323 rc = -EAGAIN;
3324 break;
3325 }
3326
3327 dev_kfree_skb_any(cmd.meta.u.skb);
3328
3329 return rc;
3330 }
3331 #endif
3332
3333 static void iwl3945_txstatus_to_ieee(struct iwl3945_priv *priv,
3334 struct iwl3945_tx_info *tx_sta)
3335 {
3336
3337 tx_sta->status.ack_signal = 0;
3338 tx_sta->status.excessive_retries = 0;
3339 tx_sta->status.queue_length = 0;
3340 tx_sta->status.queue_number = 0;
3341
3342 if (in_interrupt())
3343 ieee80211_tx_status_irqsafe(priv->hw,
3344 tx_sta->skb[0], &(tx_sta->status));
3345 else
3346 ieee80211_tx_status(priv->hw,
3347 tx_sta->skb[0], &(tx_sta->status));
3348
3349 tx_sta->skb[0] = NULL;
3350 }
3351
3352 /**
3353 * iwl3945_tx_queue_reclaim - Reclaim Tx queue entries already Tx'd
3354 *
3355 * When FW advances 'R' index, all entries between old and new 'R' index
3356 * need to be reclaimed. As result, some free space forms. If there is
3357 * enough free space (> low mark), wake the stack that feeds us.
3358 */
3359 static int iwl3945_tx_queue_reclaim(struct iwl3945_priv *priv, int txq_id, int index)
3360 {
3361 struct iwl3945_tx_queue *txq = &priv->txq[txq_id];
3362 struct iwl3945_queue *q = &txq->q;
3363 int nfreed = 0;
3364
3365 if ((index >= q->n_bd) || (x2_queue_used(q, index) == 0)) {
3366 IWL_ERROR("Read index for DMA queue txq id (%d), index %d, "
3367 "is out of range [0-%d] %d %d.\n", txq_id,
3368 index, q->n_bd, q->write_ptr, q->read_ptr);
3369 return 0;
3370 }
3371
3372 for (index = iwl3945_queue_inc_wrap(index, q->n_bd);
3373 q->read_ptr != index;
3374 q->read_ptr = iwl3945_queue_inc_wrap(q->read_ptr, q->n_bd)) {
3375 if (txq_id != IWL_CMD_QUEUE_NUM) {
3376 iwl3945_txstatus_to_ieee(priv,
3377 &(txq->txb[txq->q.read_ptr]));
3378 iwl3945_hw_txq_free_tfd(priv, txq);
3379 } else if (nfreed > 1) {
3380 IWL_ERROR("HCMD skipped: index (%d) %d %d\n", index,
3381 q->write_ptr, q->read_ptr);
3382 queue_work(priv->workqueue, &priv->restart);
3383 }
3384 nfreed++;
3385 }
3386
3387 if (iwl3945_queue_space(q) > q->low_mark && (txq_id >= 0) &&
3388 (txq_id != IWL_CMD_QUEUE_NUM) &&
3389 priv->mac80211_registered)
3390 ieee80211_wake_queue(priv->hw, txq_id);
3391
3392
3393 return nfreed;
3394 }
3395
3396 static int iwl3945_is_tx_success(u32 status)
3397 {
3398 return (status & 0xFF) == 0x1;
3399 }
3400
3401 /******************************************************************************
3402 *
3403 * Generic RX handler implementations
3404 *
3405 ******************************************************************************/
3406 /**
3407 * iwl3945_rx_reply_tx - Handle Tx response
3408 */
3409 static void iwl3945_rx_reply_tx(struct iwl3945_priv *priv,
3410 struct iwl3945_rx_mem_buffer *rxb)
3411 {
3412 struct iwl3945_rx_packet *pkt = (void *)rxb->skb->data;
3413 u16 sequence = le16_to_cpu(pkt->hdr.sequence);
3414 int txq_id = SEQ_TO_QUEUE(sequence);
3415 int index = SEQ_TO_INDEX(sequence);
3416 struct iwl3945_tx_queue *txq = &priv->txq[txq_id];
3417 struct ieee80211_tx_status *tx_status;
3418 struct iwl3945_tx_resp *tx_resp = (void *)&pkt->u.raw[0];
3419 u32 status = le32_to_cpu(tx_resp->status);
3420
3421 if ((index >= txq->q.n_bd) || (x2_queue_used(&txq->q, index) == 0)) {
3422 IWL_ERROR("Read index for DMA queue txq_id (%d) index %d "
3423 "is out of range [0-%d] %d %d\n", txq_id,
3424 index, txq->q.n_bd, txq->q.write_ptr,
3425 txq->q.read_ptr);
3426 return;
3427 }
3428
3429 tx_status = &(txq->txb[txq->q.read_ptr].status);
3430
3431 tx_status->retry_count = tx_resp->failure_frame;
3432 tx_status->queue_number = status;
3433 tx_status->queue_length = tx_resp->bt_kill_count;
3434 tx_status->queue_length |= tx_resp->failure_rts;
3435
3436 tx_status->flags =
3437 iwl3945_is_tx_success(status) ? IEEE80211_TX_STATUS_ACK : 0;
3438
3439 tx_status->control.tx_rate = iwl3945_rate_index_from_plcp(tx_resp->rate);
3440
3441 IWL_DEBUG_TX("Tx queue %d Status %s (0x%08x) plcp rate %d retries %d\n",
3442 txq_id, iwl3945_get_tx_fail_reason(status), status,
3443 tx_resp->rate, tx_resp->failure_frame);
3444
3445 IWL_DEBUG_TX_REPLY("Tx queue reclaim %d\n", index);
3446 if (index != -1)
3447 iwl3945_tx_queue_reclaim(priv, txq_id, index);
3448
3449 if (iwl_check_bits(status, TX_ABORT_REQUIRED_MSK))
3450 IWL_ERROR("TODO: Implement Tx ABORT REQUIRED!!!\n");
3451 }
3452
3453
3454 static void iwl3945_rx_reply_alive(struct iwl3945_priv *priv,
3455 struct iwl3945_rx_mem_buffer *rxb)
3456 {
3457 struct iwl3945_rx_packet *pkt = (void *)rxb->skb->data;
3458 struct iwl3945_alive_resp *palive;
3459 struct delayed_work *pwork;
3460
3461 palive = &pkt->u.alive_frame;
3462
3463 IWL_DEBUG_INFO("Alive ucode status 0x%08X revision "
3464 "0x%01X 0x%01X\n",
3465 palive->is_valid, palive->ver_type,
3466 palive->ver_subtype);
3467
3468 if (palive->ver_subtype == INITIALIZE_SUBTYPE) {
3469 IWL_DEBUG_INFO("Initialization Alive received.\n");
3470 memcpy(&priv->card_alive_init,
3471 &pkt->u.alive_frame,
3472 sizeof(struct iwl3945_init_alive_resp));
3473 pwork = &priv->init_alive_start;
3474 } else {
3475 IWL_DEBUG_INFO("Runtime Alive received.\n");
3476 memcpy(&priv->card_alive, &pkt->u.alive_frame,
3477 sizeof(struct iwl3945_alive_resp));
3478 pwork = &priv->alive_start;
3479 iwl3945_disable_events(priv);
3480 }
3481
3482 /* We delay the ALIVE response by 5ms to
3483 * give the HW RF Kill time to activate... */
3484 if (palive->is_valid == UCODE_VALID_OK)
3485 queue_delayed_work(priv->workqueue, pwork,
3486 msecs_to_jiffies(5));
3487 else
3488 IWL_WARNING("uCode did not respond OK.\n");
3489 }
3490
3491 static void iwl3945_rx_reply_add_sta(struct iwl3945_priv *priv,
3492 struct iwl3945_rx_mem_buffer *rxb)
3493 {
3494 struct iwl3945_rx_packet *pkt = (void *)rxb->skb->data;
3495
3496 IWL_DEBUG_RX("Received REPLY_ADD_STA: 0x%02X\n", pkt->u.status);
3497 return;
3498 }
3499
3500 static void iwl3945_rx_reply_error(struct iwl3945_priv *priv,
3501 struct iwl3945_rx_mem_buffer *rxb)
3502 {
3503 struct iwl3945_rx_packet *pkt = (void *)rxb->skb->data;
3504
3505 IWL_ERROR("Error Reply type 0x%08X cmd %s (0x%02X) "
3506 "seq 0x%04X ser 0x%08X\n",
3507 le32_to_cpu(pkt->u.err_resp.error_type),
3508 get_cmd_string(pkt->u.err_resp.cmd_id),
3509 pkt->u.err_resp.cmd_id,
3510 le16_to_cpu(pkt->u.err_resp.bad_cmd_seq_num),
3511 le32_to_cpu(pkt->u.err_resp.error_info));
3512 }
3513
3514 #define TX_STATUS_ENTRY(x) case TX_STATUS_FAIL_ ## x: return #x
3515
3516 static void iwl3945_rx_csa(struct iwl3945_priv *priv, struct iwl3945_rx_mem_buffer *rxb)
3517 {
3518 struct iwl3945_rx_packet *pkt = (void *)rxb->skb->data;
3519 struct iwl3945_rxon_cmd *rxon = (void *)&priv->active_rxon;
3520 struct iwl3945_csa_notification *csa = &(pkt->u.csa_notif);
3521 IWL_DEBUG_11H("CSA notif: channel %d, status %d\n",
3522 le16_to_cpu(csa->channel), le32_to_cpu(csa->status));
3523 rxon->channel = csa->channel;
3524 priv->staging_rxon.channel = csa->channel;
3525 }
3526
3527 static void iwl3945_rx_spectrum_measure_notif(struct iwl3945_priv *priv,
3528 struct iwl3945_rx_mem_buffer *rxb)
3529 {
3530 #ifdef CONFIG_IWL3945_SPECTRUM_MEASUREMENT
3531 struct iwl3945_rx_packet *pkt = (void *)rxb->skb->data;
3532 struct iwl3945_spectrum_notification *report = &(pkt->u.spectrum_notif);
3533
3534 if (!report->state) {
3535 IWL_DEBUG(IWL_DL_11H | IWL_DL_INFO,
3536 "Spectrum Measure Notification: Start\n");
3537 return;
3538 }
3539
3540 memcpy(&priv->measure_report, report, sizeof(*report));
3541 priv->measurement_status |= MEASUREMENT_READY;
3542 #endif
3543 }
3544
3545 static void iwl3945_rx_pm_sleep_notif(struct iwl3945_priv *priv,
3546 struct iwl3945_rx_mem_buffer *rxb)
3547 {
3548 #ifdef CONFIG_IWL3945_DEBUG
3549 struct iwl3945_rx_packet *pkt = (void *)rxb->skb->data;
3550 struct iwl3945_sleep_notification *sleep = &(pkt->u.sleep_notif);
3551 IWL_DEBUG_RX("sleep mode: %d, src: %d\n",
3552 sleep->pm_sleep_mode, sleep->pm_wakeup_src);
3553 #endif
3554 }
3555
3556 static void iwl3945_rx_pm_debug_statistics_notif(struct iwl3945_priv *priv,
3557 struct iwl3945_rx_mem_buffer *rxb)
3558 {
3559 struct iwl3945_rx_packet *pkt = (void *)rxb->skb->data;
3560 IWL_DEBUG_RADIO("Dumping %d bytes of unhandled "
3561 "notification for %s:\n",
3562 le32_to_cpu(pkt->len), get_cmd_string(pkt->hdr.cmd));
3563 iwl3945_print_hex_dump(IWL_DL_RADIO, pkt->u.raw, le32_to_cpu(pkt->len));
3564 }
3565
3566 static void iwl3945_bg_beacon_update(struct work_struct *work)
3567 {
3568 struct iwl3945_priv *priv =
3569 container_of(work, struct iwl3945_priv, beacon_update);
3570 struct sk_buff *beacon;
3571
3572 /* Pull updated AP beacon from mac80211. will fail if not in AP mode */
3573 beacon = ieee80211_beacon_get(priv->hw, priv->vif, NULL);
3574
3575 if (!beacon) {
3576 IWL_ERROR("update beacon failed\n");
3577 return;
3578 }
3579
3580 mutex_lock(&priv->mutex);
3581 /* new beacon skb is allocated every time; dispose previous.*/
3582 if (priv->ibss_beacon)
3583 dev_kfree_skb(priv->ibss_beacon);
3584
3585 priv->ibss_beacon = beacon;
3586 mutex_unlock(&priv->mutex);
3587
3588 iwl3945_send_beacon_cmd(priv);
3589 }
3590
3591 static void iwl3945_rx_beacon_notif(struct iwl3945_priv *priv,
3592 struct iwl3945_rx_mem_buffer *rxb)
3593 {
3594 #ifdef CONFIG_IWL3945_DEBUG
3595 struct iwl3945_rx_packet *pkt = (void *)rxb->skb->data;
3596 struct iwl3945_beacon_notif *beacon = &(pkt->u.beacon_status);
3597 u8 rate = beacon->beacon_notify_hdr.rate;
3598
3599 IWL_DEBUG_RX("beacon status %x retries %d iss %d "
3600 "tsf %d %d rate %d\n",
3601 le32_to_cpu(beacon->beacon_notify_hdr.status) & TX_STATUS_MSK,
3602 beacon->beacon_notify_hdr.failure_frame,
3603 le32_to_cpu(beacon->ibss_mgr_status),
3604 le32_to_cpu(beacon->high_tsf),
3605 le32_to_cpu(beacon->low_tsf), rate);
3606 #endif
3607
3608 if ((priv->iw_mode == IEEE80211_IF_TYPE_AP) &&
3609 (!test_bit(STATUS_EXIT_PENDING, &priv->status)))
3610 queue_work(priv->workqueue, &priv->beacon_update);
3611 }
3612
3613 /* Service response to REPLY_SCAN_CMD (0x80) */
3614 static void iwl3945_rx_reply_scan(struct iwl3945_priv *priv,
3615 struct iwl3945_rx_mem_buffer *rxb)
3616 {
3617 #ifdef CONFIG_IWL3945_DEBUG
3618 struct iwl3945_rx_packet *pkt = (void *)rxb->skb->data;
3619 struct iwl3945_scanreq_notification *notif =
3620 (struct iwl3945_scanreq_notification *)pkt->u.raw;
3621
3622 IWL_DEBUG_RX("Scan request status = 0x%x\n", notif->status);
3623 #endif
3624 }
3625
3626 /* Service SCAN_START_NOTIFICATION (0x82) */
3627 static void iwl3945_rx_scan_start_notif(struct iwl3945_priv *priv,
3628 struct iwl3945_rx_mem_buffer *rxb)
3629 {
3630 struct iwl3945_rx_packet *pkt = (void *)rxb->skb->data;
3631 struct iwl3945_scanstart_notification *notif =
3632 (struct iwl3945_scanstart_notification *)pkt->u.raw;
3633 priv->scan_start_tsf = le32_to_cpu(notif->tsf_low);
3634 IWL_DEBUG_SCAN("Scan start: "
3635 "%d [802.11%s] "
3636 "(TSF: 0x%08X:%08X) - %d (beacon timer %u)\n",
3637 notif->channel,
3638 notif->band ? "bg" : "a",
3639 notif->tsf_high,
3640 notif->tsf_low, notif->status, notif->beacon_timer);
3641 }
3642
3643 /* Service SCAN_RESULTS_NOTIFICATION (0x83) */
3644 static void iwl3945_rx_scan_results_notif(struct iwl3945_priv *priv,
3645 struct iwl3945_rx_mem_buffer *rxb)
3646 {
3647 struct iwl3945_rx_packet *pkt = (void *)rxb->skb->data;
3648 struct iwl3945_scanresults_notification *notif =
3649 (struct iwl3945_scanresults_notification *)pkt->u.raw;
3650
3651 IWL_DEBUG_SCAN("Scan ch.res: "
3652 "%d [802.11%s] "
3653 "(TSF: 0x%08X:%08X) - %d "
3654 "elapsed=%lu usec (%dms since last)\n",
3655 notif->channel,
3656 notif->band ? "bg" : "a",
3657 le32_to_cpu(notif->tsf_high),
3658 le32_to_cpu(notif->tsf_low),
3659 le32_to_cpu(notif->statistics[0]),
3660 le32_to_cpu(notif->tsf_low) - priv->scan_start_tsf,
3661 jiffies_to_msecs(elapsed_jiffies
3662 (priv->last_scan_jiffies, jiffies)));
3663
3664 priv->last_scan_jiffies = jiffies;
3665 priv->next_scan_jiffies = 0;
3666 }
3667
3668 /* Service SCAN_COMPLETE_NOTIFICATION (0x84) */
3669 static void iwl3945_rx_scan_complete_notif(struct iwl3945_priv *priv,
3670 struct iwl3945_rx_mem_buffer *rxb)
3671 {
3672 struct iwl3945_rx_packet *pkt = (void *)rxb->skb->data;
3673 struct iwl3945_scancomplete_notification *scan_notif = (void *)pkt->u.raw;
3674
3675 IWL_DEBUG_SCAN("Scan complete: %d channels (TSF 0x%08X:%08X) - %d\n",
3676 scan_notif->scanned_channels,
3677 scan_notif->tsf_low,
3678 scan_notif->tsf_high, scan_notif->status);
3679
3680 /* The HW is no longer scanning */
3681 clear_bit(STATUS_SCAN_HW, &priv->status);
3682
3683 /* The scan completion notification came in, so kill that timer... */
3684 cancel_delayed_work(&priv->scan_check);
3685
3686 IWL_DEBUG_INFO("Scan pass on %sGHz took %dms\n",
3687 (priv->scan_bands == 2) ? "2.4" : "5.2",
3688 jiffies_to_msecs(elapsed_jiffies
3689 (priv->scan_pass_start, jiffies)));
3690
3691 /* Remove this scanned band from the list
3692 * of pending bands to scan */
3693 priv->scan_bands--;
3694
3695 /* If a request to abort was given, or the scan did not succeed
3696 * then we reset the scan state machine and terminate,
3697 * re-queuing another scan if one has been requested */
3698 if (test_bit(STATUS_SCAN_ABORTING, &priv->status)) {
3699 IWL_DEBUG_INFO("Aborted scan completed.\n");
3700 clear_bit(STATUS_SCAN_ABORTING, &priv->status);
3701 } else {
3702 /* If there are more bands on this scan pass reschedule */
3703 if (priv->scan_bands > 0)
3704 goto reschedule;
3705 }
3706
3707 priv->last_scan_jiffies = jiffies;
3708 priv->next_scan_jiffies = 0;
3709 IWL_DEBUG_INFO("Setting scan to off\n");
3710
3711 clear_bit(STATUS_SCANNING, &priv->status);
3712
3713 IWL_DEBUG_INFO("Scan took %dms\n",
3714 jiffies_to_msecs(elapsed_jiffies(priv->scan_start, jiffies)));
3715
3716 queue_work(priv->workqueue, &priv->scan_completed);
3717
3718 return;
3719
3720 reschedule:
3721 priv->scan_pass_start = jiffies;
3722 queue_work(priv->workqueue, &priv->request_scan);
3723 }
3724
3725 /* Handle notification from uCode that card's power state is changing
3726 * due to software, hardware, or critical temperature RFKILL */
3727 static void iwl3945_rx_card_state_notif(struct iwl3945_priv *priv,
3728 struct iwl3945_rx_mem_buffer *rxb)
3729 {
3730 struct iwl3945_rx_packet *pkt = (void *)rxb->skb->data;
3731 u32 flags = le32_to_cpu(pkt->u.card_state_notif.flags);
3732 unsigned long status = priv->status;
3733
3734 IWL_DEBUG_RF_KILL("Card state received: HW:%s SW:%s\n",
3735 (flags & HW_CARD_DISABLED) ? "Kill" : "On",
3736 (flags & SW_CARD_DISABLED) ? "Kill" : "On");
3737
3738 iwl3945_write32(priv, CSR_UCODE_DRV_GP1_SET,
3739 CSR_UCODE_DRV_GP1_BIT_CMD_BLOCKED);
3740
3741 if (flags & HW_CARD_DISABLED)
3742 set_bit(STATUS_RF_KILL_HW, &priv->status);
3743 else
3744 clear_bit(STATUS_RF_KILL_HW, &priv->status);
3745
3746
3747 if (flags & SW_CARD_DISABLED)
3748 set_bit(STATUS_RF_KILL_SW, &priv->status);
3749 else
3750 clear_bit(STATUS_RF_KILL_SW, &priv->status);
3751
3752 iwl3945_scan_cancel(priv);
3753
3754 if ((test_bit(STATUS_RF_KILL_HW, &status) !=
3755 test_bit(STATUS_RF_KILL_HW, &priv->status)) ||
3756 (test_bit(STATUS_RF_KILL_SW, &status) !=
3757 test_bit(STATUS_RF_KILL_SW, &priv->status)))
3758 queue_work(priv->workqueue, &priv->rf_kill);
3759 else
3760 wake_up_interruptible(&priv->wait_command_queue);
3761 }
3762
3763 /**
3764 * iwl3945_setup_rx_handlers - Initialize Rx handler callbacks
3765 *
3766 * Setup the RX handlers for each of the reply types sent from the uCode
3767 * to the host.
3768 *
3769 * This function chains into the hardware specific files for them to setup
3770 * any hardware specific handlers as well.
3771 */
3772 static void iwl3945_setup_rx_handlers(struct iwl3945_priv *priv)
3773 {
3774 priv->rx_handlers[REPLY_ALIVE] = iwl3945_rx_reply_alive;
3775 priv->rx_handlers[REPLY_ADD_STA] = iwl3945_rx_reply_add_sta;
3776 priv->rx_handlers[REPLY_ERROR] = iwl3945_rx_reply_error;
3777 priv->rx_handlers[CHANNEL_SWITCH_NOTIFICATION] = iwl3945_rx_csa;
3778 priv->rx_handlers[SPECTRUM_MEASURE_NOTIFICATION] =
3779 iwl3945_rx_spectrum_measure_notif;
3780 priv->rx_handlers[PM_SLEEP_NOTIFICATION] = iwl3945_rx_pm_sleep_notif;
3781 priv->rx_handlers[PM_DEBUG_STATISTIC_NOTIFIC] =
3782 iwl3945_rx_pm_debug_statistics_notif;
3783 priv->rx_handlers[BEACON_NOTIFICATION] = iwl3945_rx_beacon_notif;
3784
3785 /*
3786 * The same handler is used for both the REPLY to a discrete
3787 * statistics request from the host as well as for the periodic
3788 * statistics notifications (after received beacons) from the uCode.
3789 */
3790 priv->rx_handlers[REPLY_STATISTICS_CMD] = iwl3945_hw_rx_statistics;
3791 priv->rx_handlers[STATISTICS_NOTIFICATION] = iwl3945_hw_rx_statistics;
3792
3793 priv->rx_handlers[REPLY_SCAN_CMD] = iwl3945_rx_reply_scan;
3794 priv->rx_handlers[SCAN_START_NOTIFICATION] = iwl3945_rx_scan_start_notif;
3795 priv->rx_handlers[SCAN_RESULTS_NOTIFICATION] =
3796 iwl3945_rx_scan_results_notif;
3797 priv->rx_handlers[SCAN_COMPLETE_NOTIFICATION] =
3798 iwl3945_rx_scan_complete_notif;
3799 priv->rx_handlers[CARD_STATE_NOTIFICATION] = iwl3945_rx_card_state_notif;
3800 priv->rx_handlers[REPLY_TX] = iwl3945_rx_reply_tx;
3801
3802 /* Set up hardware specific Rx handlers */
3803 iwl3945_hw_rx_handler_setup(priv);
3804 }
3805
3806 /**
3807 * iwl3945_tx_cmd_complete - Pull unused buffers off the queue and reclaim them
3808 * @rxb: Rx buffer to reclaim
3809 *
3810 * If an Rx buffer has an async callback associated with it the callback
3811 * will be executed. The attached skb (if present) will only be freed
3812 * if the callback returns 1
3813 */
3814 static void iwl3945_tx_cmd_complete(struct iwl3945_priv *priv,
3815 struct iwl3945_rx_mem_buffer *rxb)
3816 {
3817 struct iwl3945_rx_packet *pkt = (struct iwl3945_rx_packet *)rxb->skb->data;
3818 u16 sequence = le16_to_cpu(pkt->hdr.sequence);
3819 int txq_id = SEQ_TO_QUEUE(sequence);
3820 int index = SEQ_TO_INDEX(sequence);
3821 int huge = sequence & SEQ_HUGE_FRAME;
3822 int cmd_index;
3823 struct iwl3945_cmd *cmd;
3824
3825 /* If a Tx command is being handled and it isn't in the actual
3826 * command queue then there a command routing bug has been introduced
3827 * in the queue management code. */
3828 if (txq_id != IWL_CMD_QUEUE_NUM)
3829 IWL_ERROR("Error wrong command queue %d command id 0x%X\n",
3830 txq_id, pkt->hdr.cmd);
3831 BUG_ON(txq_id != IWL_CMD_QUEUE_NUM);
3832
3833 cmd_index = get_cmd_index(&priv->txq[IWL_CMD_QUEUE_NUM].q, index, huge);
3834 cmd = &priv->txq[IWL_CMD_QUEUE_NUM].cmd[cmd_index];
3835
3836 /* Input error checking is done when commands are added to queue. */
3837 if (cmd->meta.flags & CMD_WANT_SKB) {
3838 cmd->meta.source->u.skb = rxb->skb;
3839 rxb->skb = NULL;
3840 } else if (cmd->meta.u.callback &&
3841 !cmd->meta.u.callback(priv, cmd, rxb->skb))
3842 rxb->skb = NULL;
3843
3844 iwl3945_tx_queue_reclaim(priv, txq_id, index);
3845
3846 if (!(cmd->meta.flags & CMD_ASYNC)) {
3847 clear_bit(STATUS_HCMD_ACTIVE, &priv->status);
3848 wake_up_interruptible(&priv->wait_command_queue);
3849 }
3850 }
3851
3852 /************************** RX-FUNCTIONS ****************************/
3853 /*
3854 * Rx theory of operation
3855 *
3856 * The host allocates 32 DMA target addresses and passes the host address
3857 * to the firmware at register IWL_RFDS_TABLE_LOWER + N * RFD_SIZE where N is
3858 * 0 to 31
3859 *
3860 * Rx Queue Indexes
3861 * The host/firmware share two index registers for managing the Rx buffers.
3862 *
3863 * The READ index maps to the first position that the firmware may be writing
3864 * to -- the driver can read up to (but not including) this position and get
3865 * good data.
3866 * The READ index is managed by the firmware once the card is enabled.
3867 *
3868 * The WRITE index maps to the last position the driver has read from -- the
3869 * position preceding WRITE is the last slot the firmware can place a packet.
3870 *
3871 * The queue is empty (no good data) if WRITE = READ - 1, and is full if
3872 * WRITE = READ.
3873 *
3874 * During initialization, the host sets up the READ queue position to the first
3875 * INDEX position, and WRITE to the last (READ - 1 wrapped)
3876 *
3877 * When the firmware places a packet in a buffer, it will advance the READ index
3878 * and fire the RX interrupt. The driver can then query the READ index and
3879 * process as many packets as possible, moving the WRITE index forward as it
3880 * resets the Rx queue buffers with new memory.
3881 *
3882 * The management in the driver is as follows:
3883 * + A list of pre-allocated SKBs is stored in iwl->rxq->rx_free. When
3884 * iwl->rxq->free_count drops to or below RX_LOW_WATERMARK, work is scheduled
3885 * to replenish the iwl->rxq->rx_free.
3886 * + In iwl3945_rx_replenish (scheduled) if 'processed' != 'read' then the
3887 * iwl->rxq is replenished and the READ INDEX is updated (updating the
3888 * 'processed' and 'read' driver indexes as well)
3889 * + A received packet is processed and handed to the kernel network stack,
3890 * detached from the iwl->rxq. The driver 'processed' index is updated.
3891 * + The Host/Firmware iwl->rxq is replenished at tasklet time from the rx_free
3892 * list. If there are no allocated buffers in iwl->rxq->rx_free, the READ
3893 * INDEX is not incremented and iwl->status(RX_STALLED) is set. If there
3894 * were enough free buffers and RX_STALLED is set it is cleared.
3895 *
3896 *
3897 * Driver sequence:
3898 *
3899 * iwl3945_rx_queue_alloc() Allocates rx_free
3900 * iwl3945_rx_replenish() Replenishes rx_free list from rx_used, and calls
3901 * iwl3945_rx_queue_restock
3902 * iwl3945_rx_queue_restock() Moves available buffers from rx_free into Rx
3903 * queue, updates firmware pointers, and updates
3904 * the WRITE index. If insufficient rx_free buffers
3905 * are available, schedules iwl3945_rx_replenish
3906 *
3907 * -- enable interrupts --
3908 * ISR - iwl3945_rx() Detach iwl3945_rx_mem_buffers from pool up to the
3909 * READ INDEX, detaching the SKB from the pool.
3910 * Moves the packet buffer from queue to rx_used.
3911 * Calls iwl3945_rx_queue_restock to refill any empty
3912 * slots.
3913 * ...
3914 *
3915 */
3916
3917 /**
3918 * iwl3945_rx_queue_space - Return number of free slots available in queue.
3919 */
3920 static int iwl3945_rx_queue_space(const struct iwl3945_rx_queue *q)
3921 {
3922 int s = q->read - q->write;
3923 if (s <= 0)
3924 s += RX_QUEUE_SIZE;
3925 /* keep some buffer to not confuse full and empty queue */
3926 s -= 2;
3927 if (s < 0)
3928 s = 0;
3929 return s;
3930 }
3931
3932 /**
3933 * iwl3945_rx_queue_update_write_ptr - Update the write pointer for the RX queue
3934 */
3935 int iwl3945_rx_queue_update_write_ptr(struct iwl3945_priv *priv, struct iwl3945_rx_queue *q)
3936 {
3937 u32 reg = 0;
3938 int rc = 0;
3939 unsigned long flags;
3940
3941 spin_lock_irqsave(&q->lock, flags);
3942
3943 if (q->need_update == 0)
3944 goto exit_unlock;
3945
3946 /* If power-saving is in use, make sure device is awake */
3947 if (test_bit(STATUS_POWER_PMI, &priv->status)) {
3948 reg = iwl3945_read32(priv, CSR_UCODE_DRV_GP1);
3949
3950 if (reg & CSR_UCODE_DRV_GP1_BIT_MAC_SLEEP) {
3951 iwl3945_set_bit(priv, CSR_GP_CNTRL,
3952 CSR_GP_CNTRL_REG_FLAG_MAC_ACCESS_REQ);
3953 goto exit_unlock;
3954 }
3955
3956 rc = iwl3945_grab_nic_access(priv);
3957 if (rc)
3958 goto exit_unlock;
3959
3960 /* Device expects a multiple of 8 */
3961 iwl3945_write_direct32(priv, FH_RSCSR_CHNL0_WPTR,
3962 q->write & ~0x7);
3963 iwl3945_release_nic_access(priv);
3964
3965 /* Else device is assumed to be awake */
3966 } else
3967 /* Device expects a multiple of 8 */
3968 iwl3945_write32(priv, FH_RSCSR_CHNL0_WPTR, q->write & ~0x7);
3969
3970
3971 q->need_update = 0;
3972
3973 exit_unlock:
3974 spin_unlock_irqrestore(&q->lock, flags);
3975 return rc;
3976 }
3977
3978 /**
3979 * iwl3945_dma_addr2rbd_ptr - convert a DMA address to a uCode read buffer ptr
3980 */
3981 static inline __le32 iwl3945_dma_addr2rbd_ptr(struct iwl3945_priv *priv,
3982 dma_addr_t dma_addr)
3983 {
3984 return cpu_to_le32((u32)dma_addr);
3985 }
3986
3987 /**
3988 * iwl3945_rx_queue_restock - refill RX queue from pre-allocated pool
3989 *
3990 * If there are slots in the RX queue that need to be restocked,
3991 * and we have free pre-allocated buffers, fill the ranks as much
3992 * as we can, pulling from rx_free.
3993 *
3994 * This moves the 'write' index forward to catch up with 'processed', and
3995 * also updates the memory address in the firmware to reference the new
3996 * target buffer.
3997 */
3998 static int iwl3945_rx_queue_restock(struct iwl3945_priv *priv)
3999 {
4000 struct iwl3945_rx_queue *rxq = &priv->rxq;
4001 struct list_head *element;
4002 struct iwl3945_rx_mem_buffer *rxb;
4003 unsigned long flags;
4004 int write, rc;
4005
4006 spin_lock_irqsave(&rxq->lock, flags);
4007 write = rxq->write & ~0x7;
4008 while ((iwl3945_rx_queue_space(rxq) > 0) && (rxq->free_count)) {
4009 /* Get next free Rx buffer, remove from free list */
4010 element = rxq->rx_free.next;
4011 rxb = list_entry(element, struct iwl3945_rx_mem_buffer, list);
4012 list_del(element);
4013
4014 /* Point to Rx buffer via next RBD in circular buffer */
4015 rxq->bd[rxq->write] = iwl3945_dma_addr2rbd_ptr(priv, rxb->dma_addr);
4016 rxq->queue[rxq->write] = rxb;
4017 rxq->write = (rxq->write + 1) & RX_QUEUE_MASK;
4018 rxq->free_count--;
4019 }
4020 spin_unlock_irqrestore(&rxq->lock, flags);
4021 /* If the pre-allocated buffer pool is dropping low, schedule to
4022 * refill it */
4023 if (rxq->free_count <= RX_LOW_WATERMARK)
4024 queue_work(priv->workqueue, &priv->rx_replenish);
4025
4026
4027 /* If we've added more space for the firmware to place data, tell it.
4028 * Increment device's write pointer in multiples of 8. */
4029 if ((write != (rxq->write & ~0x7))
4030 || (abs(rxq->write - rxq->read) > 7)) {
4031 spin_lock_irqsave(&rxq->lock, flags);
4032 rxq->need_update = 1;
4033 spin_unlock_irqrestore(&rxq->lock, flags);
4034 rc = iwl3945_rx_queue_update_write_ptr(priv, rxq);
4035 if (rc)
4036 return rc;
4037 }
4038
4039 return 0;
4040 }
4041
4042 /**
4043 * iwl3945_rx_replenish - Move all used packet from rx_used to rx_free
4044 *
4045 * When moving to rx_free an SKB is allocated for the slot.
4046 *
4047 * Also restock the Rx queue via iwl3945_rx_queue_restock.
4048 * This is called as a scheduled work item (except for during initialization)
4049 */
4050 static void iwl3945_rx_allocate(struct iwl3945_priv *priv)
4051 {
4052 struct iwl3945_rx_queue *rxq = &priv->rxq;
4053 struct list_head *element;
4054 struct iwl3945_rx_mem_buffer *rxb;
4055 unsigned long flags;
4056 spin_lock_irqsave(&rxq->lock, flags);
4057 while (!list_empty(&rxq->rx_used)) {
4058 element = rxq->rx_used.next;
4059 rxb = list_entry(element, struct iwl3945_rx_mem_buffer, list);
4060
4061 /* Alloc a new receive buffer */
4062 rxb->skb =
4063 alloc_skb(IWL_RX_BUF_SIZE, __GFP_NOWARN | GFP_ATOMIC);
4064 if (!rxb->skb) {
4065 if (net_ratelimit())
4066 printk(KERN_CRIT DRV_NAME
4067 ": Can not allocate SKB buffers\n");
4068 /* We don't reschedule replenish work here -- we will
4069 * call the restock method and if it still needs
4070 * more buffers it will schedule replenish */
4071 break;
4072 }
4073
4074 /* If radiotap head is required, reserve some headroom here.
4075 * The physical head count is a variable rx_stats->phy_count.
4076 * We reserve 4 bytes here. Plus these extra bytes, the
4077 * headroom of the physical head should be enough for the
4078 * radiotap head that iwl3945 supported. See iwl3945_rt.
4079 */
4080 skb_reserve(rxb->skb, 4);
4081
4082 priv->alloc_rxb_skb++;
4083 list_del(element);
4084
4085 /* Get physical address of RB/SKB */
4086 rxb->dma_addr =
4087 pci_map_single(priv->pci_dev, rxb->skb->data,
4088 IWL_RX_BUF_SIZE, PCI_DMA_FROMDEVICE);
4089 list_add_tail(&rxb->list, &rxq->rx_free);
4090 rxq->free_count++;
4091 }
4092 spin_unlock_irqrestore(&rxq->lock, flags);
4093 }
4094
4095 /*
4096 * this should be called while priv->lock is locked
4097 */
4098 static void __iwl3945_rx_replenish(void *data)
4099 {
4100 struct iwl3945_priv *priv = data;
4101
4102 iwl3945_rx_allocate(priv);
4103 iwl3945_rx_queue_restock(priv);
4104 }
4105
4106
4107 void iwl3945_rx_replenish(void *data)
4108 {
4109 struct iwl3945_priv *priv = data;
4110 unsigned long flags;
4111
4112 iwl3945_rx_allocate(priv);
4113
4114 spin_lock_irqsave(&priv->lock, flags);
4115 iwl3945_rx_queue_restock(priv);
4116 spin_unlock_irqrestore(&priv->lock, flags);
4117 }
4118
4119 /* Assumes that the skb field of the buffers in 'pool' is kept accurate.
4120 * If an SKB has been detached, the POOL needs to have its SKB set to NULL
4121 * This free routine walks the list of POOL entries and if SKB is set to
4122 * non NULL it is unmapped and freed
4123 */
4124 static void iwl3945_rx_queue_free(struct iwl3945_priv *priv, struct iwl3945_rx_queue *rxq)
4125 {
4126 int i;
4127 for (i = 0; i < RX_QUEUE_SIZE + RX_FREE_BUFFERS; i++) {
4128 if (rxq->pool[i].skb != NULL) {
4129 pci_unmap_single(priv->pci_dev,
4130 rxq->pool[i].dma_addr,
4131 IWL_RX_BUF_SIZE, PCI_DMA_FROMDEVICE);
4132 dev_kfree_skb(rxq->pool[i].skb);
4133 }
4134 }
4135
4136 pci_free_consistent(priv->pci_dev, 4 * RX_QUEUE_SIZE, rxq->bd,
4137 rxq->dma_addr);
4138 rxq->bd = NULL;
4139 }
4140
4141 int iwl3945_rx_queue_alloc(struct iwl3945_priv *priv)
4142 {
4143 struct iwl3945_rx_queue *rxq = &priv->rxq;
4144 struct pci_dev *dev = priv->pci_dev;
4145 int i;
4146
4147 spin_lock_init(&rxq->lock);
4148 INIT_LIST_HEAD(&rxq->rx_free);
4149 INIT_LIST_HEAD(&rxq->rx_used);
4150
4151 /* Alloc the circular buffer of Read Buffer Descriptors (RBDs) */
4152 rxq->bd = pci_alloc_consistent(dev, 4 * RX_QUEUE_SIZE, &rxq->dma_addr);
4153 if (!rxq->bd)
4154 return -ENOMEM;
4155
4156 /* Fill the rx_used queue with _all_ of the Rx buffers */
4157 for (i = 0; i < RX_FREE_BUFFERS + RX_QUEUE_SIZE; i++)
4158 list_add_tail(&rxq->pool[i].list, &rxq->rx_used);
4159
4160 /* Set us so that we have processed and used all buffers, but have
4161 * not restocked the Rx queue with fresh buffers */
4162 rxq->read = rxq->write = 0;
4163 rxq->free_count = 0;
4164 rxq->need_update = 0;
4165 return 0;
4166 }
4167
4168 void iwl3945_rx_queue_reset(struct iwl3945_priv *priv, struct iwl3945_rx_queue *rxq)
4169 {
4170 unsigned long flags;
4171 int i;
4172 spin_lock_irqsave(&rxq->lock, flags);
4173 INIT_LIST_HEAD(&rxq->rx_free);
4174 INIT_LIST_HEAD(&rxq->rx_used);
4175 /* Fill the rx_used queue with _all_ of the Rx buffers */
4176 for (i = 0; i < RX_FREE_BUFFERS + RX_QUEUE_SIZE; i++) {
4177 /* In the reset function, these buffers may have been allocated
4178 * to an SKB, so we need to unmap and free potential storage */
4179 if (rxq->pool[i].skb != NULL) {
4180 pci_unmap_single(priv->pci_dev,
4181 rxq->pool[i].dma_addr,
4182 IWL_RX_BUF_SIZE, PCI_DMA_FROMDEVICE);
4183 priv->alloc_rxb_skb--;
4184 dev_kfree_skb(rxq->pool[i].skb);
4185 rxq->pool[i].skb = NULL;
4186 }
4187 list_add_tail(&rxq->pool[i].list, &rxq->rx_used);
4188 }
4189
4190 /* Set us so that we have processed and used all buffers, but have
4191 * not restocked the Rx queue with fresh buffers */
4192 rxq->read = rxq->write = 0;
4193 rxq->free_count = 0;
4194 spin_unlock_irqrestore(&rxq->lock, flags);
4195 }
4196
4197 /* Convert linear signal-to-noise ratio into dB */
4198 static u8 ratio2dB[100] = {
4199 /* 0 1 2 3 4 5 6 7 8 9 */
4200 0, 0, 6, 10, 12, 14, 16, 17, 18, 19, /* 00 - 09 */
4201 20, 21, 22, 22, 23, 23, 24, 25, 26, 26, /* 10 - 19 */
4202 26, 26, 26, 27, 27, 28, 28, 28, 29, 29, /* 20 - 29 */
4203 29, 30, 30, 30, 31, 31, 31, 31, 32, 32, /* 30 - 39 */
4204 32, 32, 32, 33, 33, 33, 33, 33, 34, 34, /* 40 - 49 */
4205 34, 34, 34, 34, 35, 35, 35, 35, 35, 35, /* 50 - 59 */
4206 36, 36, 36, 36, 36, 36, 36, 37, 37, 37, /* 60 - 69 */
4207 37, 37, 37, 37, 37, 38, 38, 38, 38, 38, /* 70 - 79 */
4208 38, 38, 38, 38, 38, 39, 39, 39, 39, 39, /* 80 - 89 */
4209 39, 39, 39, 39, 39, 40, 40, 40, 40, 40 /* 90 - 99 */
4210 };
4211
4212 /* Calculates a relative dB value from a ratio of linear
4213 * (i.e. not dB) signal levels.
4214 * Conversion assumes that levels are voltages (20*log), not powers (10*log). */
4215 int iwl3945_calc_db_from_ratio(int sig_ratio)
4216 {
4217 /* 1000:1 or higher just report as 60 dB */
4218 if (sig_ratio >= 1000)
4219 return 60;
4220
4221 /* 100:1 or higher, divide by 10 and use table,
4222 * add 20 dB to make up for divide by 10 */
4223 if (sig_ratio >= 100)
4224 return (20 + (int)ratio2dB[sig_ratio/10]);
4225
4226 /* We shouldn't see this */
4227 if (sig_ratio < 1)
4228 return 0;
4229
4230 /* Use table for ratios 1:1 - 99:1 */
4231 return (int)ratio2dB[sig_ratio];
4232 }
4233
4234 #define PERFECT_RSSI (-20) /* dBm */
4235 #define WORST_RSSI (-95) /* dBm */
4236 #define RSSI_RANGE (PERFECT_RSSI - WORST_RSSI)
4237
4238 /* Calculate an indication of rx signal quality (a percentage, not dBm!).
4239 * See http://www.ces.clemson.edu/linux/signal_quality.shtml for info
4240 * about formulas used below. */
4241 int iwl3945_calc_sig_qual(int rssi_dbm, int noise_dbm)
4242 {
4243 int sig_qual;
4244 int degradation = PERFECT_RSSI - rssi_dbm;
4245
4246 /* If we get a noise measurement, use signal-to-noise ratio (SNR)
4247 * as indicator; formula is (signal dbm - noise dbm).
4248 * SNR at or above 40 is a great signal (100%).
4249 * Below that, scale to fit SNR of 0 - 40 dB within 0 - 100% indicator.
4250 * Weakest usable signal is usually 10 - 15 dB SNR. */
4251 if (noise_dbm) {
4252 if (rssi_dbm - noise_dbm >= 40)
4253 return 100;
4254 else if (rssi_dbm < noise_dbm)
4255 return 0;
4256 sig_qual = ((rssi_dbm - noise_dbm) * 5) / 2;
4257
4258 /* Else use just the signal level.
4259 * This formula is a least squares fit of data points collected and
4260 * compared with a reference system that had a percentage (%) display
4261 * for signal quality. */
4262 } else
4263 sig_qual = (100 * (RSSI_RANGE * RSSI_RANGE) - degradation *
4264 (15 * RSSI_RANGE + 62 * degradation)) /
4265 (RSSI_RANGE * RSSI_RANGE);
4266
4267 if (sig_qual > 100)
4268 sig_qual = 100;
4269 else if (sig_qual < 1)
4270 sig_qual = 0;
4271
4272 return sig_qual;
4273 }
4274
4275 /**
4276 * iwl3945_rx_handle - Main entry function for receiving responses from uCode
4277 *
4278 * Uses the priv->rx_handlers callback function array to invoke
4279 * the appropriate handlers, including command responses,
4280 * frame-received notifications, and other notifications.
4281 */
4282 static void iwl3945_rx_handle(struct iwl3945_priv *priv)
4283 {
4284 struct iwl3945_rx_mem_buffer *rxb;
4285 struct iwl3945_rx_packet *pkt;
4286 struct iwl3945_rx_queue *rxq = &priv->rxq;
4287 u32 r, i;
4288 int reclaim;
4289 unsigned long flags;
4290 u8 fill_rx = 0;
4291 u32 count = 8;
4292
4293 /* uCode's read index (stored in shared DRAM) indicates the last Rx
4294 * buffer that the driver may process (last buffer filled by ucode). */
4295 r = iwl3945_hw_get_rx_read(priv);
4296 i = rxq->read;
4297
4298 if (iwl3945_rx_queue_space(rxq) > (RX_QUEUE_SIZE / 2))
4299 fill_rx = 1;
4300 /* Rx interrupt, but nothing sent from uCode */
4301 if (i == r)
4302 IWL_DEBUG(IWL_DL_RX | IWL_DL_ISR, "r = %d, i = %d\n", r, i);
4303
4304 while (i != r) {
4305 rxb = rxq->queue[i];
4306
4307 /* If an RXB doesn't have a Rx queue slot associated with it,
4308 * then a bug has been introduced in the queue refilling
4309 * routines -- catch it here */
4310 BUG_ON(rxb == NULL);
4311
4312 rxq->queue[i] = NULL;
4313
4314 pci_dma_sync_single_for_cpu(priv->pci_dev, rxb->dma_addr,
4315 IWL_RX_BUF_SIZE,
4316 PCI_DMA_FROMDEVICE);
4317 pkt = (struct iwl3945_rx_packet *)rxb->skb->data;
4318
4319 /* Reclaim a command buffer only if this packet is a response
4320 * to a (driver-originated) command.
4321 * If the packet (e.g. Rx frame) originated from uCode,
4322 * there is no command buffer to reclaim.
4323 * Ucode should set SEQ_RX_FRAME bit if ucode-originated,
4324 * but apparently a few don't get set; catch them here. */
4325 reclaim = !(pkt->hdr.sequence & SEQ_RX_FRAME) &&
4326 (pkt->hdr.cmd != STATISTICS_NOTIFICATION) &&
4327 (pkt->hdr.cmd != REPLY_TX);
4328
4329 /* Based on type of command response or notification,
4330 * handle those that need handling via function in
4331 * rx_handlers table. See iwl3945_setup_rx_handlers() */
4332 if (priv->rx_handlers[pkt->hdr.cmd]) {
4333 IWL_DEBUG(IWL_DL_HOST_COMMAND | IWL_DL_RX | IWL_DL_ISR,
4334 "r = %d, i = %d, %s, 0x%02x\n", r, i,
4335 get_cmd_string(pkt->hdr.cmd), pkt->hdr.cmd);
4336 priv->rx_handlers[pkt->hdr.cmd] (priv, rxb);
4337 } else {
4338 /* No handling needed */
4339 IWL_DEBUG(IWL_DL_HOST_COMMAND | IWL_DL_RX | IWL_DL_ISR,
4340 "r %d i %d No handler needed for %s, 0x%02x\n",
4341 r, i, get_cmd_string(pkt->hdr.cmd),
4342 pkt->hdr.cmd);
4343 }
4344
4345 if (reclaim) {
4346 /* Invoke any callbacks, transfer the skb to caller, and
4347 * fire off the (possibly) blocking iwl3945_send_cmd()
4348 * as we reclaim the driver command queue */
4349 if (rxb && rxb->skb)
4350 iwl3945_tx_cmd_complete(priv, rxb);
4351 else
4352 IWL_WARNING("Claim null rxb?\n");
4353 }
4354
4355 /* For now we just don't re-use anything. We can tweak this
4356 * later to try and re-use notification packets and SKBs that
4357 * fail to Rx correctly */
4358 if (rxb->skb != NULL) {
4359 priv->alloc_rxb_skb--;
4360 dev_kfree_skb_any(rxb->skb);
4361 rxb->skb = NULL;
4362 }
4363
4364 pci_unmap_single(priv->pci_dev, rxb->dma_addr,
4365 IWL_RX_BUF_SIZE, PCI_DMA_FROMDEVICE);
4366 spin_lock_irqsave(&rxq->lock, flags);
4367 list_add_tail(&rxb->list, &priv->rxq.rx_used);
4368 spin_unlock_irqrestore(&rxq->lock, flags);
4369 i = (i + 1) & RX_QUEUE_MASK;
4370 /* If there are a lot of unused frames,
4371 * restock the Rx queue so ucode won't assert. */
4372 if (fill_rx) {
4373 count++;
4374 if (count >= 8) {
4375 priv->rxq.read = i;
4376 __iwl3945_rx_replenish(priv);
4377 count = 0;
4378 }
4379 }
4380 }
4381
4382 /* Backtrack one entry */
4383 priv->rxq.read = i;
4384 iwl3945_rx_queue_restock(priv);
4385 }
4386
4387 /**
4388 * iwl3945_tx_queue_update_write_ptr - Send new write index to hardware
4389 */
4390 static int iwl3945_tx_queue_update_write_ptr(struct iwl3945_priv *priv,
4391 struct iwl3945_tx_queue *txq)
4392 {
4393 u32 reg = 0;
4394 int rc = 0;
4395 int txq_id = txq->q.id;
4396
4397 if (txq->need_update == 0)
4398 return rc;
4399
4400 /* if we're trying to save power */
4401 if (test_bit(STATUS_POWER_PMI, &priv->status)) {
4402 /* wake up nic if it's powered down ...
4403 * uCode will wake up, and interrupt us again, so next
4404 * time we'll skip this part. */
4405 reg = iwl3945_read32(priv, CSR_UCODE_DRV_GP1);
4406
4407 if (reg & CSR_UCODE_DRV_GP1_BIT_MAC_SLEEP) {
4408 IWL_DEBUG_INFO("Requesting wakeup, GP1 = 0x%x\n", reg);
4409 iwl3945_set_bit(priv, CSR_GP_CNTRL,
4410 CSR_GP_CNTRL_REG_FLAG_MAC_ACCESS_REQ);
4411 return rc;
4412 }
4413
4414 /* restore this queue's parameters in nic hardware. */
4415 rc = iwl3945_grab_nic_access(priv);
4416 if (rc)
4417 return rc;
4418 iwl3945_write_direct32(priv, HBUS_TARG_WRPTR,
4419 txq->q.write_ptr | (txq_id << 8));
4420 iwl3945_release_nic_access(priv);
4421
4422 /* else not in power-save mode, uCode will never sleep when we're
4423 * trying to tx (during RFKILL, we're not trying to tx). */
4424 } else
4425 iwl3945_write32(priv, HBUS_TARG_WRPTR,
4426 txq->q.write_ptr | (txq_id << 8));
4427
4428 txq->need_update = 0;
4429
4430 return rc;
4431 }
4432
4433 #ifdef CONFIG_IWL3945_DEBUG
4434 static void iwl3945_print_rx_config_cmd(struct iwl3945_rxon_cmd *rxon)
4435 {
4436 DECLARE_MAC_BUF(mac);
4437
4438 IWL_DEBUG_RADIO("RX CONFIG:\n");
4439 iwl3945_print_hex_dump(IWL_DL_RADIO, (u8 *) rxon, sizeof(*rxon));
4440 IWL_DEBUG_RADIO("u16 channel: 0x%x\n", le16_to_cpu(rxon->channel));
4441 IWL_DEBUG_RADIO("u32 flags: 0x%08X\n", le32_to_cpu(rxon->flags));
4442 IWL_DEBUG_RADIO("u32 filter_flags: 0x%08x\n",
4443 le32_to_cpu(rxon->filter_flags));
4444 IWL_DEBUG_RADIO("u8 dev_type: 0x%x\n", rxon->dev_type);
4445 IWL_DEBUG_RADIO("u8 ofdm_basic_rates: 0x%02x\n",
4446 rxon->ofdm_basic_rates);
4447 IWL_DEBUG_RADIO("u8 cck_basic_rates: 0x%02x\n", rxon->cck_basic_rates);
4448 IWL_DEBUG_RADIO("u8[6] node_addr: %s\n",
4449 print_mac(mac, rxon->node_addr));
4450 IWL_DEBUG_RADIO("u8[6] bssid_addr: %s\n",
4451 print_mac(mac, rxon->bssid_addr));
4452 IWL_DEBUG_RADIO("u16 assoc_id: 0x%x\n", le16_to_cpu(rxon->assoc_id));
4453 }
4454 #endif
4455
4456 static void iwl3945_enable_interrupts(struct iwl3945_priv *priv)
4457 {
4458 IWL_DEBUG_ISR("Enabling interrupts\n");
4459 set_bit(STATUS_INT_ENABLED, &priv->status);
4460 iwl3945_write32(priv, CSR_INT_MASK, CSR_INI_SET_MASK);
4461 }
4462
4463 static inline void iwl3945_disable_interrupts(struct iwl3945_priv *priv)
4464 {
4465 clear_bit(STATUS_INT_ENABLED, &priv->status);
4466
4467 /* disable interrupts from uCode/NIC to host */
4468 iwl3945_write32(priv, CSR_INT_MASK, 0x00000000);
4469
4470 /* acknowledge/clear/reset any interrupts still pending
4471 * from uCode or flow handler (Rx/Tx DMA) */
4472 iwl3945_write32(priv, CSR_INT, 0xffffffff);
4473 iwl3945_write32(priv, CSR_FH_INT_STATUS, 0xffffffff);
4474 IWL_DEBUG_ISR("Disabled interrupts\n");
4475 }
4476
4477 static const char *desc_lookup(int i)
4478 {
4479 switch (i) {
4480 case 1:
4481 return "FAIL";
4482 case 2:
4483 return "BAD_PARAM";
4484 case 3:
4485 return "BAD_CHECKSUM";
4486 case 4:
4487 return "NMI_INTERRUPT";
4488 case 5:
4489 return "SYSASSERT";
4490 case 6:
4491 return "FATAL_ERROR";
4492 }
4493
4494 return "UNKNOWN";
4495 }
4496
4497 #define ERROR_START_OFFSET (1 * sizeof(u32))
4498 #define ERROR_ELEM_SIZE (7 * sizeof(u32))
4499
4500 static void iwl3945_dump_nic_error_log(struct iwl3945_priv *priv)
4501 {
4502 u32 i;
4503 u32 desc, time, count, base, data1;
4504 u32 blink1, blink2, ilink1, ilink2;
4505 int rc;
4506
4507 base = le32_to_cpu(priv->card_alive.error_event_table_ptr);
4508
4509 if (!iwl3945_hw_valid_rtc_data_addr(base)) {
4510 IWL_ERROR("Not valid error log pointer 0x%08X\n", base);
4511 return;
4512 }
4513
4514 rc = iwl3945_grab_nic_access(priv);
4515 if (rc) {
4516 IWL_WARNING("Can not read from adapter at this time.\n");
4517 return;
4518 }
4519
4520 count = iwl3945_read_targ_mem(priv, base);
4521
4522 if (ERROR_START_OFFSET <= count * ERROR_ELEM_SIZE) {
4523 IWL_ERROR("Start IWL Error Log Dump:\n");
4524 IWL_ERROR("Status: 0x%08lX, Config: %08X count: %d\n",
4525 priv->status, priv->config, count);
4526 }
4527
4528 IWL_ERROR("Desc Time asrtPC blink2 "
4529 "ilink1 nmiPC Line\n");
4530 for (i = ERROR_START_OFFSET;
4531 i < (count * ERROR_ELEM_SIZE) + ERROR_START_OFFSET;
4532 i += ERROR_ELEM_SIZE) {
4533 desc = iwl3945_read_targ_mem(priv, base + i);
4534 time =
4535 iwl3945_read_targ_mem(priv, base + i + 1 * sizeof(u32));
4536 blink1 =
4537 iwl3945_read_targ_mem(priv, base + i + 2 * sizeof(u32));
4538 blink2 =
4539 iwl3945_read_targ_mem(priv, base + i + 3 * sizeof(u32));
4540 ilink1 =
4541 iwl3945_read_targ_mem(priv, base + i + 4 * sizeof(u32));
4542 ilink2 =
4543 iwl3945_read_targ_mem(priv, base + i + 5 * sizeof(u32));
4544 data1 =
4545 iwl3945_read_targ_mem(priv, base + i + 6 * sizeof(u32));
4546
4547 IWL_ERROR
4548 ("%-13s (#%d) %010u 0x%05X 0x%05X 0x%05X 0x%05X %u\n\n",
4549 desc_lookup(desc), desc, time, blink1, blink2,
4550 ilink1, ilink2, data1);
4551 }
4552
4553 iwl3945_release_nic_access(priv);
4554
4555 }
4556
4557 #define EVENT_START_OFFSET (6 * sizeof(u32))
4558
4559 /**
4560 * iwl3945_print_event_log - Dump error event log to syslog
4561 *
4562 * NOTE: Must be called with iwl3945_grab_nic_access() already obtained!
4563 */
4564 static void iwl3945_print_event_log(struct iwl3945_priv *priv, u32 start_idx,
4565 u32 num_events, u32 mode)
4566 {
4567 u32 i;
4568 u32 base; /* SRAM byte address of event log header */
4569 u32 event_size; /* 2 u32s, or 3 u32s if timestamp recorded */
4570 u32 ptr; /* SRAM byte address of log data */
4571 u32 ev, time, data; /* event log data */
4572
4573 if (num_events == 0)
4574 return;
4575
4576 base = le32_to_cpu(priv->card_alive.log_event_table_ptr);
4577
4578 if (mode == 0)
4579 event_size = 2 * sizeof(u32);
4580 else
4581 event_size = 3 * sizeof(u32);
4582
4583 ptr = base + EVENT_START_OFFSET + (start_idx * event_size);
4584
4585 /* "time" is actually "data" for mode 0 (no timestamp).
4586 * place event id # at far right for easier visual parsing. */
4587 for (i = 0; i < num_events; i++) {
4588 ev = iwl3945_read_targ_mem(priv, ptr);
4589 ptr += sizeof(u32);
4590 time = iwl3945_read_targ_mem(priv, ptr);
4591 ptr += sizeof(u32);
4592 if (mode == 0)
4593 IWL_ERROR("0x%08x\t%04u\n", time, ev); /* data, ev */
4594 else {
4595 data = iwl3945_read_targ_mem(priv, ptr);
4596 ptr += sizeof(u32);
4597 IWL_ERROR("%010u\t0x%08x\t%04u\n", time, data, ev);
4598 }
4599 }
4600 }
4601
4602 static void iwl3945_dump_nic_event_log(struct iwl3945_priv *priv)
4603 {
4604 int rc;
4605 u32 base; /* SRAM byte address of event log header */
4606 u32 capacity; /* event log capacity in # entries */
4607 u32 mode; /* 0 - no timestamp, 1 - timestamp recorded */
4608 u32 num_wraps; /* # times uCode wrapped to top of log */
4609 u32 next_entry; /* index of next entry to be written by uCode */
4610 u32 size; /* # entries that we'll print */
4611
4612 base = le32_to_cpu(priv->card_alive.log_event_table_ptr);
4613 if (!iwl3945_hw_valid_rtc_data_addr(base)) {
4614 IWL_ERROR("Invalid event log pointer 0x%08X\n", base);
4615 return;
4616 }
4617
4618 rc = iwl3945_grab_nic_access(priv);
4619 if (rc) {
4620 IWL_WARNING("Can not read from adapter at this time.\n");
4621 return;
4622 }
4623
4624 /* event log header */
4625 capacity = iwl3945_read_targ_mem(priv, base);
4626 mode = iwl3945_read_targ_mem(priv, base + (1 * sizeof(u32)));
4627 num_wraps = iwl3945_read_targ_mem(priv, base + (2 * sizeof(u32)));
4628 next_entry = iwl3945_read_targ_mem(priv, base + (3 * sizeof(u32)));
4629
4630 size = num_wraps ? capacity : next_entry;
4631
4632 /* bail out if nothing in log */
4633 if (size == 0) {
4634 IWL_ERROR("Start IWL Event Log Dump: nothing in log\n");
4635 iwl3945_release_nic_access(priv);
4636 return;
4637 }
4638
4639 IWL_ERROR("Start IWL Event Log Dump: display count %d, wraps %d\n",
4640 size, num_wraps);
4641
4642 /* if uCode has wrapped back to top of log, start at the oldest entry,
4643 * i.e the next one that uCode would fill. */
4644 if (num_wraps)
4645 iwl3945_print_event_log(priv, next_entry,
4646 capacity - next_entry, mode);
4647
4648 /* (then/else) start at top of log */
4649 iwl3945_print_event_log(priv, 0, next_entry, mode);
4650
4651 iwl3945_release_nic_access(priv);
4652 }
4653
4654 /**
4655 * iwl3945_irq_handle_error - called for HW or SW error interrupt from card
4656 */
4657 static void iwl3945_irq_handle_error(struct iwl3945_priv *priv)
4658 {
4659 /* Set the FW error flag -- cleared on iwl3945_down */
4660 set_bit(STATUS_FW_ERROR, &priv->status);
4661
4662 /* Cancel currently queued command. */
4663 clear_bit(STATUS_HCMD_ACTIVE, &priv->status);
4664
4665 #ifdef CONFIG_IWL3945_DEBUG
4666 if (iwl3945_debug_level & IWL_DL_FW_ERRORS) {
4667 iwl3945_dump_nic_error_log(priv);
4668 iwl3945_dump_nic_event_log(priv);
4669 iwl3945_print_rx_config_cmd(&priv->staging_rxon);
4670 }
4671 #endif
4672
4673 wake_up_interruptible(&priv->wait_command_queue);
4674
4675 /* Keep the restart process from trying to send host
4676 * commands by clearing the INIT status bit */
4677 clear_bit(STATUS_READY, &priv->status);
4678
4679 if (!test_bit(STATUS_EXIT_PENDING, &priv->status)) {
4680 IWL_DEBUG(IWL_DL_INFO | IWL_DL_FW_ERRORS,
4681 "Restarting adapter due to uCode error.\n");
4682
4683 if (iwl3945_is_associated(priv)) {
4684 memcpy(&priv->recovery_rxon, &priv->active_rxon,
4685 sizeof(priv->recovery_rxon));
4686 priv->error_recovering = 1;
4687 }
4688 queue_work(priv->workqueue, &priv->restart);
4689 }
4690 }
4691
4692 static void iwl3945_error_recovery(struct iwl3945_priv *priv)
4693 {
4694 unsigned long flags;
4695
4696 memcpy(&priv->staging_rxon, &priv->recovery_rxon,
4697 sizeof(priv->staging_rxon));
4698 priv->staging_rxon.filter_flags &= ~RXON_FILTER_ASSOC_MSK;
4699 iwl3945_commit_rxon(priv);
4700
4701 iwl3945_add_station(priv, priv->bssid, 1, 0);
4702
4703 spin_lock_irqsave(&priv->lock, flags);
4704 priv->assoc_id = le16_to_cpu(priv->staging_rxon.assoc_id);
4705 priv->error_recovering = 0;
4706 spin_unlock_irqrestore(&priv->lock, flags);
4707 }
4708
4709 static void iwl3945_irq_tasklet(struct iwl3945_priv *priv)
4710 {
4711 u32 inta, handled = 0;
4712 u32 inta_fh;
4713 unsigned long flags;
4714 #ifdef CONFIG_IWL3945_DEBUG
4715 u32 inta_mask;
4716 #endif
4717
4718 spin_lock_irqsave(&priv->lock, flags);
4719
4720 /* Ack/clear/reset pending uCode interrupts.
4721 * Note: Some bits in CSR_INT are "OR" of bits in CSR_FH_INT_STATUS,
4722 * and will clear only when CSR_FH_INT_STATUS gets cleared. */
4723 inta = iwl3945_read32(priv, CSR_INT);
4724 iwl3945_write32(priv, CSR_INT, inta);
4725
4726 /* Ack/clear/reset pending flow-handler (DMA) interrupts.
4727 * Any new interrupts that happen after this, either while we're
4728 * in this tasklet, or later, will show up in next ISR/tasklet. */
4729 inta_fh = iwl3945_read32(priv, CSR_FH_INT_STATUS);
4730 iwl3945_write32(priv, CSR_FH_INT_STATUS, inta_fh);
4731
4732 #ifdef CONFIG_IWL3945_DEBUG
4733 if (iwl3945_debug_level & IWL_DL_ISR) {
4734 /* just for debug */
4735 inta_mask = iwl3945_read32(priv, CSR_INT_MASK);
4736 IWL_DEBUG_ISR("inta 0x%08x, enabled 0x%08x, fh 0x%08x\n",
4737 inta, inta_mask, inta_fh);
4738 }
4739 #endif
4740
4741 /* Since CSR_INT and CSR_FH_INT_STATUS reads and clears are not
4742 * atomic, make sure that inta covers all the interrupts that
4743 * we've discovered, even if FH interrupt came in just after
4744 * reading CSR_INT. */
4745 if (inta_fh & CSR_FH_INT_RX_MASK)
4746 inta |= CSR_INT_BIT_FH_RX;
4747 if (inta_fh & CSR_FH_INT_TX_MASK)
4748 inta |= CSR_INT_BIT_FH_TX;
4749
4750 /* Now service all interrupt bits discovered above. */
4751 if (inta & CSR_INT_BIT_HW_ERR) {
4752 IWL_ERROR("Microcode HW error detected. Restarting.\n");
4753
4754 /* Tell the device to stop sending interrupts */
4755 iwl3945_disable_interrupts(priv);
4756
4757 iwl3945_irq_handle_error(priv);
4758
4759 handled |= CSR_INT_BIT_HW_ERR;
4760
4761 spin_unlock_irqrestore(&priv->lock, flags);
4762
4763 return;
4764 }
4765
4766 #ifdef CONFIG_IWL3945_DEBUG
4767 if (iwl3945_debug_level & (IWL_DL_ISR)) {
4768 /* NIC fires this, but we don't use it, redundant with WAKEUP */
4769 if (inta & CSR_INT_BIT_SCD)
4770 IWL_DEBUG_ISR("Scheduler finished to transmit "
4771 "the frame/frames.\n");
4772
4773 /* Alive notification via Rx interrupt will do the real work */
4774 if (inta & CSR_INT_BIT_ALIVE)
4775 IWL_DEBUG_ISR("Alive interrupt\n");
4776 }
4777 #endif
4778 /* Safely ignore these bits for debug checks below */
4779 inta &= ~(CSR_INT_BIT_SCD | CSR_INT_BIT_ALIVE);
4780
4781 /* HW RF KILL switch toggled (4965 only) */
4782 if (inta & CSR_INT_BIT_RF_KILL) {
4783 int hw_rf_kill = 0;
4784 if (!(iwl3945_read32(priv, CSR_GP_CNTRL) &
4785 CSR_GP_CNTRL_REG_FLAG_HW_RF_KILL_SW))
4786 hw_rf_kill = 1;
4787
4788 IWL_DEBUG(IWL_DL_INFO | IWL_DL_RF_KILL | IWL_DL_ISR,
4789 "RF_KILL bit toggled to %s.\n",
4790 hw_rf_kill ? "disable radio":"enable radio");
4791
4792 /* Queue restart only if RF_KILL switch was set to "kill"
4793 * when we loaded driver, and is now set to "enable".
4794 * After we're Alive, RF_KILL gets handled by
4795 * iwl_rx_card_state_notif() */
4796 if (!hw_rf_kill && !test_bit(STATUS_ALIVE, &priv->status)) {
4797 clear_bit(STATUS_RF_KILL_HW, &priv->status);
4798 queue_work(priv->workqueue, &priv->restart);
4799 }
4800
4801 handled |= CSR_INT_BIT_RF_KILL;
4802 }
4803
4804 /* Chip got too hot and stopped itself (4965 only) */
4805 if (inta & CSR_INT_BIT_CT_KILL) {
4806 IWL_ERROR("Microcode CT kill error detected.\n");
4807 handled |= CSR_INT_BIT_CT_KILL;
4808 }
4809
4810 /* Error detected by uCode */
4811 if (inta & CSR_INT_BIT_SW_ERR) {
4812 IWL_ERROR("Microcode SW error detected. Restarting 0x%X.\n",
4813 inta);
4814 iwl3945_irq_handle_error(priv);
4815 handled |= CSR_INT_BIT_SW_ERR;
4816 }
4817
4818 /* uCode wakes up after power-down sleep */
4819 if (inta & CSR_INT_BIT_WAKEUP) {
4820 IWL_DEBUG_ISR("Wakeup interrupt\n");
4821 iwl3945_rx_queue_update_write_ptr(priv, &priv->rxq);
4822 iwl3945_tx_queue_update_write_ptr(priv, &priv->txq[0]);
4823 iwl3945_tx_queue_update_write_ptr(priv, &priv->txq[1]);
4824 iwl3945_tx_queue_update_write_ptr(priv, &priv->txq[2]);
4825 iwl3945_tx_queue_update_write_ptr(priv, &priv->txq[3]);
4826 iwl3945_tx_queue_update_write_ptr(priv, &priv->txq[4]);
4827 iwl3945_tx_queue_update_write_ptr(priv, &priv->txq[5]);
4828
4829 handled |= CSR_INT_BIT_WAKEUP;
4830 }
4831
4832 /* All uCode command responses, including Tx command responses,
4833 * Rx "responses" (frame-received notification), and other
4834 * notifications from uCode come through here*/
4835 if (inta & (CSR_INT_BIT_FH_RX | CSR_INT_BIT_SW_RX)) {
4836 iwl3945_rx_handle(priv);
4837 handled |= (CSR_INT_BIT_FH_RX | CSR_INT_BIT_SW_RX);
4838 }
4839
4840 if (inta & CSR_INT_BIT_FH_TX) {
4841 IWL_DEBUG_ISR("Tx interrupt\n");
4842
4843 iwl3945_write32(priv, CSR_FH_INT_STATUS, (1 << 6));
4844 if (!iwl3945_grab_nic_access(priv)) {
4845 iwl3945_write_direct32(priv,
4846 FH_TCSR_CREDIT
4847 (ALM_FH_SRVC_CHNL), 0x0);
4848 iwl3945_release_nic_access(priv);
4849 }
4850 handled |= CSR_INT_BIT_FH_TX;
4851 }
4852
4853 if (inta & ~handled)
4854 IWL_ERROR("Unhandled INTA bits 0x%08x\n", inta & ~handled);
4855
4856 if (inta & ~CSR_INI_SET_MASK) {
4857 IWL_WARNING("Disabled INTA bits 0x%08x were pending\n",
4858 inta & ~CSR_INI_SET_MASK);
4859 IWL_WARNING(" with FH_INT = 0x%08x\n", inta_fh);
4860 }
4861
4862 /* Re-enable all interrupts */
4863 iwl3945_enable_interrupts(priv);
4864
4865 #ifdef CONFIG_IWL3945_DEBUG
4866 if (iwl3945_debug_level & (IWL_DL_ISR)) {
4867 inta = iwl3945_read32(priv, CSR_INT);
4868 inta_mask = iwl3945_read32(priv, CSR_INT_MASK);
4869 inta_fh = iwl3945_read32(priv, CSR_FH_INT_STATUS);
4870 IWL_DEBUG_ISR("End inta 0x%08x, enabled 0x%08x, fh 0x%08x, "
4871 "flags 0x%08lx\n", inta, inta_mask, inta_fh, flags);
4872 }
4873 #endif
4874 spin_unlock_irqrestore(&priv->lock, flags);
4875 }
4876
4877 static irqreturn_t iwl3945_isr(int irq, void *data)
4878 {
4879 struct iwl3945_priv *priv = data;
4880 u32 inta, inta_mask;
4881 u32 inta_fh;
4882 if (!priv)
4883 return IRQ_NONE;
4884
4885 spin_lock(&priv->lock);
4886
4887 /* Disable (but don't clear!) interrupts here to avoid
4888 * back-to-back ISRs and sporadic interrupts from our NIC.
4889 * If we have something to service, the tasklet will re-enable ints.
4890 * If we *don't* have something, we'll re-enable before leaving here. */
4891 inta_mask = iwl3945_read32(priv, CSR_INT_MASK); /* just for debug */
4892 iwl3945_write32(priv, CSR_INT_MASK, 0x00000000);
4893
4894 /* Discover which interrupts are active/pending */
4895 inta = iwl3945_read32(priv, CSR_INT);
4896 inta_fh = iwl3945_read32(priv, CSR_FH_INT_STATUS);
4897
4898 /* Ignore interrupt if there's nothing in NIC to service.
4899 * This may be due to IRQ shared with another device,
4900 * or due to sporadic interrupts thrown from our NIC. */
4901 if (!inta && !inta_fh) {
4902 IWL_DEBUG_ISR("Ignore interrupt, inta == 0, inta_fh == 0\n");
4903 goto none;
4904 }
4905
4906 if ((inta == 0xFFFFFFFF) || ((inta & 0xFFFFFFF0) == 0xa5a5a5a0)) {
4907 /* Hardware disappeared */
4908 IWL_WARNING("HARDWARE GONE?? INTA == 0x%080x\n", inta);
4909 goto unplugged;
4910 }
4911
4912 IWL_DEBUG_ISR("ISR inta 0x%08x, enabled 0x%08x, fh 0x%08x\n",
4913 inta, inta_mask, inta_fh);
4914
4915 inta &= ~CSR_INT_BIT_SCD;
4916
4917 /* iwl3945_irq_tasklet() will service interrupts and re-enable them */
4918 if (likely(inta || inta_fh))
4919 tasklet_schedule(&priv->irq_tasklet);
4920 unplugged:
4921 spin_unlock(&priv->lock);
4922
4923 return IRQ_HANDLED;
4924
4925 none:
4926 /* re-enable interrupts here since we don't have anything to service. */
4927 iwl3945_enable_interrupts(priv);
4928 spin_unlock(&priv->lock);
4929 return IRQ_NONE;
4930 }
4931
4932 /************************** EEPROM BANDS ****************************
4933 *
4934 * The iwl3945_eeprom_band definitions below provide the mapping from the
4935 * EEPROM contents to the specific channel number supported for each
4936 * band.
4937 *
4938 * For example, iwl3945_priv->eeprom.band_3_channels[4] from the band_3
4939 * definition below maps to physical channel 42 in the 5.2GHz spectrum.
4940 * The specific geography and calibration information for that channel
4941 * is contained in the eeprom map itself.
4942 *
4943 * During init, we copy the eeprom information and channel map
4944 * information into priv->channel_info_24/52 and priv->channel_map_24/52
4945 *
4946 * channel_map_24/52 provides the index in the channel_info array for a
4947 * given channel. We have to have two separate maps as there is channel
4948 * overlap with the 2.4GHz and 5.2GHz spectrum as seen in band_1 and
4949 * band_2
4950 *
4951 * A value of 0xff stored in the channel_map indicates that the channel
4952 * is not supported by the hardware at all.
4953 *
4954 * A value of 0xfe in the channel_map indicates that the channel is not
4955 * valid for Tx with the current hardware. This means that
4956 * while the system can tune and receive on a given channel, it may not
4957 * be able to associate or transmit any frames on that
4958 * channel. There is no corresponding channel information for that
4959 * entry.
4960 *
4961 *********************************************************************/
4962
4963 /* 2.4 GHz */
4964 static const u8 iwl3945_eeprom_band_1[14] = {
4965 1, 2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13, 14
4966 };
4967
4968 /* 5.2 GHz bands */
4969 static const u8 iwl3945_eeprom_band_2[] = { /* 4915-5080MHz */
4970 183, 184, 185, 187, 188, 189, 192, 196, 7, 8, 11, 12, 16
4971 };
4972
4973 static const u8 iwl3945_eeprom_band_3[] = { /* 5170-5320MHz */
4974 34, 36, 38, 40, 42, 44, 46, 48, 52, 56, 60, 64
4975 };
4976
4977 static const u8 iwl3945_eeprom_band_4[] = { /* 5500-5700MHz */
4978 100, 104, 108, 112, 116, 120, 124, 128, 132, 136, 140
4979 };
4980
4981 static const u8 iwl3945_eeprom_band_5[] = { /* 5725-5825MHz */
4982 145, 149, 153, 157, 161, 165
4983 };
4984
4985 static void iwl3945_init_band_reference(const struct iwl3945_priv *priv, int band,
4986 int *eeprom_ch_count,
4987 const struct iwl3945_eeprom_channel
4988 **eeprom_ch_info,
4989 const u8 **eeprom_ch_index)
4990 {
4991 switch (band) {
4992 case 1: /* 2.4GHz band */
4993 *eeprom_ch_count = ARRAY_SIZE(iwl3945_eeprom_band_1);
4994 *eeprom_ch_info = priv->eeprom.band_1_channels;
4995 *eeprom_ch_index = iwl3945_eeprom_band_1;
4996 break;
4997 case 2: /* 4.9GHz band */
4998 *eeprom_ch_count = ARRAY_SIZE(iwl3945_eeprom_band_2);
4999 *eeprom_ch_info = priv->eeprom.band_2_channels;
5000 *eeprom_ch_index = iwl3945_eeprom_band_2;
5001 break;
5002 case 3: /* 5.2GHz band */
5003 *eeprom_ch_count = ARRAY_SIZE(iwl3945_eeprom_band_3);
5004 *eeprom_ch_info = priv->eeprom.band_3_channels;
5005 *eeprom_ch_index = iwl3945_eeprom_band_3;
5006 break;
5007 case 4: /* 5.5GHz band */
5008 *eeprom_ch_count = ARRAY_SIZE(iwl3945_eeprom_band_4);
5009 *eeprom_ch_info = priv->eeprom.band_4_channels;
5010 *eeprom_ch_index = iwl3945_eeprom_band_4;
5011 break;
5012 case 5: /* 5.7GHz band */
5013 *eeprom_ch_count = ARRAY_SIZE(iwl3945_eeprom_band_5);
5014 *eeprom_ch_info = priv->eeprom.band_5_channels;
5015 *eeprom_ch_index = iwl3945_eeprom_band_5;
5016 break;
5017 default:
5018 BUG();
5019 return;
5020 }
5021 }
5022
5023 /**
5024 * iwl3945_get_channel_info - Find driver's private channel info
5025 *
5026 * Based on band and channel number.
5027 */
5028 const struct iwl3945_channel_info *iwl3945_get_channel_info(const struct iwl3945_priv *priv,
5029 int phymode, u16 channel)
5030 {
5031 int i;
5032
5033 switch (phymode) {
5034 case MODE_IEEE80211A:
5035 for (i = 14; i < priv->channel_count; i++) {
5036 if (priv->channel_info[i].channel == channel)
5037 return &priv->channel_info[i];
5038 }
5039 break;
5040
5041 case MODE_IEEE80211B:
5042 case MODE_IEEE80211G:
5043 if (channel >= 1 && channel <= 14)
5044 return &priv->channel_info[channel - 1];
5045 break;
5046
5047 }
5048
5049 return NULL;
5050 }
5051
5052 #define CHECK_AND_PRINT(x) ((eeprom_ch_info[ch].flags & EEPROM_CHANNEL_##x) \
5053 ? # x " " : "")
5054
5055 /**
5056 * iwl3945_init_channel_map - Set up driver's info for all possible channels
5057 */
5058 static int iwl3945_init_channel_map(struct iwl3945_priv *priv)
5059 {
5060 int eeprom_ch_count = 0;
5061 const u8 *eeprom_ch_index = NULL;
5062 const struct iwl3945_eeprom_channel *eeprom_ch_info = NULL;
5063 int band, ch;
5064 struct iwl3945_channel_info *ch_info;
5065
5066 if (priv->channel_count) {
5067 IWL_DEBUG_INFO("Channel map already initialized.\n");
5068 return 0;
5069 }
5070
5071 if (priv->eeprom.version < 0x2f) {
5072 IWL_WARNING("Unsupported EEPROM version: 0x%04X\n",
5073 priv->eeprom.version);
5074 return -EINVAL;
5075 }
5076
5077 IWL_DEBUG_INFO("Initializing regulatory info from EEPROM\n");
5078
5079 priv->channel_count =
5080 ARRAY_SIZE(iwl3945_eeprom_band_1) +
5081 ARRAY_SIZE(iwl3945_eeprom_band_2) +
5082 ARRAY_SIZE(iwl3945_eeprom_band_3) +
5083 ARRAY_SIZE(iwl3945_eeprom_band_4) +
5084 ARRAY_SIZE(iwl3945_eeprom_band_5);
5085
5086 IWL_DEBUG_INFO("Parsing data for %d channels.\n", priv->channel_count);
5087
5088 priv->channel_info = kzalloc(sizeof(struct iwl3945_channel_info) *
5089 priv->channel_count, GFP_KERNEL);
5090 if (!priv->channel_info) {
5091 IWL_ERROR("Could not allocate channel_info\n");
5092 priv->channel_count = 0;
5093 return -ENOMEM;
5094 }
5095
5096 ch_info = priv->channel_info;
5097
5098 /* Loop through the 5 EEPROM bands adding them in order to the
5099 * channel map we maintain (that contains additional information than
5100 * what just in the EEPROM) */
5101 for (band = 1; band <= 5; band++) {
5102
5103 iwl3945_init_band_reference(priv, band, &eeprom_ch_count,
5104 &eeprom_ch_info, &eeprom_ch_index);
5105
5106 /* Loop through each band adding each of the channels */
5107 for (ch = 0; ch < eeprom_ch_count; ch++) {
5108 ch_info->channel = eeprom_ch_index[ch];
5109 ch_info->phymode = (band == 1) ? MODE_IEEE80211B :
5110 MODE_IEEE80211A;
5111
5112 /* permanently store EEPROM's channel regulatory flags
5113 * and max power in channel info database. */
5114 ch_info->eeprom = eeprom_ch_info[ch];
5115
5116 /* Copy the run-time flags so they are there even on
5117 * invalid channels */
5118 ch_info->flags = eeprom_ch_info[ch].flags;
5119
5120 if (!(is_channel_valid(ch_info))) {
5121 IWL_DEBUG_INFO("Ch. %d Flags %x [%sGHz] - "
5122 "No traffic\n",
5123 ch_info->channel,
5124 ch_info->flags,
5125 is_channel_a_band(ch_info) ?
5126 "5.2" : "2.4");
5127 ch_info++;
5128 continue;
5129 }
5130
5131 /* Initialize regulatory-based run-time data */
5132 ch_info->max_power_avg = ch_info->curr_txpow =
5133 eeprom_ch_info[ch].max_power_avg;
5134 ch_info->scan_power = eeprom_ch_info[ch].max_power_avg;
5135 ch_info->min_power = 0;
5136
5137 IWL_DEBUG_INFO("Ch. %d [%sGHz] %s%s%s%s%s%s(0x%02x"
5138 " %ddBm): Ad-Hoc %ssupported\n",
5139 ch_info->channel,
5140 is_channel_a_band(ch_info) ?
5141 "5.2" : "2.4",
5142 CHECK_AND_PRINT(IBSS),
5143 CHECK_AND_PRINT(ACTIVE),
5144 CHECK_AND_PRINT(RADAR),
5145 CHECK_AND_PRINT(WIDE),
5146 CHECK_AND_PRINT(NARROW),
5147 CHECK_AND_PRINT(DFS),
5148 eeprom_ch_info[ch].flags,
5149 eeprom_ch_info[ch].max_power_avg,
5150 ((eeprom_ch_info[ch].
5151 flags & EEPROM_CHANNEL_IBSS)
5152 && !(eeprom_ch_info[ch].
5153 flags & EEPROM_CHANNEL_RADAR))
5154 ? "" : "not ");
5155
5156 /* Set the user_txpower_limit to the highest power
5157 * supported by any channel */
5158 if (eeprom_ch_info[ch].max_power_avg >
5159 priv->user_txpower_limit)
5160 priv->user_txpower_limit =
5161 eeprom_ch_info[ch].max_power_avg;
5162
5163 ch_info++;
5164 }
5165 }
5166
5167 /* Set up txpower settings in driver for all channels */
5168 if (iwl3945_txpower_set_from_eeprom(priv))
5169 return -EIO;
5170
5171 return 0;
5172 }
5173
5174 /*
5175 * iwl3945_free_channel_map - undo allocations in iwl3945_init_channel_map
5176 */
5177 static void iwl3945_free_channel_map(struct iwl3945_priv *priv)
5178 {
5179 kfree(priv->channel_info);
5180 priv->channel_count = 0;
5181 }
5182
5183 /* For active scan, listen ACTIVE_DWELL_TIME (msec) on each channel after
5184 * sending probe req. This should be set long enough to hear probe responses
5185 * from more than one AP. */
5186 #define IWL_ACTIVE_DWELL_TIME_24 (20) /* all times in msec */
5187 #define IWL_ACTIVE_DWELL_TIME_52 (10)
5188
5189 /* For faster active scanning, scan will move to the next channel if fewer than
5190 * PLCP_QUIET_THRESH packets are heard on this channel within
5191 * ACTIVE_QUIET_TIME after sending probe request. This shortens the dwell
5192 * time if it's a quiet channel (nothing responded to our probe, and there's
5193 * no other traffic).
5194 * Disable "quiet" feature by setting PLCP_QUIET_THRESH to 0. */
5195 #define IWL_PLCP_QUIET_THRESH __constant_cpu_to_le16(1) /* packets */
5196 #define IWL_ACTIVE_QUIET_TIME __constant_cpu_to_le16(5) /* msec */
5197
5198 /* For passive scan, listen PASSIVE_DWELL_TIME (msec) on each channel.
5199 * Must be set longer than active dwell time.
5200 * For the most reliable scan, set > AP beacon interval (typically 100msec). */
5201 #define IWL_PASSIVE_DWELL_TIME_24 (20) /* all times in msec */
5202 #define IWL_PASSIVE_DWELL_TIME_52 (10)
5203 #define IWL_PASSIVE_DWELL_BASE (100)
5204 #define IWL_CHANNEL_TUNE_TIME 5
5205
5206 static inline u16 iwl3945_get_active_dwell_time(struct iwl3945_priv *priv, int phymode)
5207 {
5208 if (phymode == MODE_IEEE80211A)
5209 return IWL_ACTIVE_DWELL_TIME_52;
5210 else
5211 return IWL_ACTIVE_DWELL_TIME_24;
5212 }
5213
5214 static u16 iwl3945_get_passive_dwell_time(struct iwl3945_priv *priv, int phymode)
5215 {
5216 u16 active = iwl3945_get_active_dwell_time(priv, phymode);
5217 u16 passive = (phymode != MODE_IEEE80211A) ?
5218 IWL_PASSIVE_DWELL_BASE + IWL_PASSIVE_DWELL_TIME_24 :
5219 IWL_PASSIVE_DWELL_BASE + IWL_PASSIVE_DWELL_TIME_52;
5220
5221 if (iwl3945_is_associated(priv)) {
5222 /* If we're associated, we clamp the maximum passive
5223 * dwell time to be 98% of the beacon interval (minus
5224 * 2 * channel tune time) */
5225 passive = priv->beacon_int;
5226 if ((passive > IWL_PASSIVE_DWELL_BASE) || !passive)
5227 passive = IWL_PASSIVE_DWELL_BASE;
5228 passive = (passive * 98) / 100 - IWL_CHANNEL_TUNE_TIME * 2;
5229 }
5230
5231 if (passive <= active)
5232 passive = active + 1;
5233
5234 return passive;
5235 }
5236
5237 static int iwl3945_get_channels_for_scan(struct iwl3945_priv *priv, int phymode,
5238 u8 is_active, u8 direct_mask,
5239 struct iwl3945_scan_channel *scan_ch)
5240 {
5241 const struct ieee80211_channel *channels = NULL;
5242 const struct ieee80211_hw_mode *hw_mode;
5243 const struct iwl3945_channel_info *ch_info;
5244 u16 passive_dwell = 0;
5245 u16 active_dwell = 0;
5246 int added, i;
5247
5248 hw_mode = iwl3945_get_hw_mode(priv, phymode);
5249 if (!hw_mode)
5250 return 0;
5251
5252 channels = hw_mode->channels;
5253
5254 active_dwell = iwl3945_get_active_dwell_time(priv, phymode);
5255 passive_dwell = iwl3945_get_passive_dwell_time(priv, phymode);
5256
5257 for (i = 0, added = 0; i < hw_mode->num_channels; i++) {
5258 if (channels[i].chan ==
5259 le16_to_cpu(priv->active_rxon.channel)) {
5260 if (iwl3945_is_associated(priv)) {
5261 IWL_DEBUG_SCAN
5262 ("Skipping current channel %d\n",
5263 le16_to_cpu(priv->active_rxon.channel));
5264 continue;
5265 }
5266 } else if (priv->only_active_channel)
5267 continue;
5268
5269 scan_ch->channel = channels[i].chan;
5270
5271 ch_info = iwl3945_get_channel_info(priv, phymode, scan_ch->channel);
5272 if (!is_channel_valid(ch_info)) {
5273 IWL_DEBUG_SCAN("Channel %d is INVALID for this SKU.\n",
5274 scan_ch->channel);
5275 continue;
5276 }
5277
5278 if (!is_active || is_channel_passive(ch_info) ||
5279 !(channels[i].flag & IEEE80211_CHAN_W_ACTIVE_SCAN))
5280 scan_ch->type = 0; /* passive */
5281 else
5282 scan_ch->type = 1; /* active */
5283
5284 if (scan_ch->type & 1)
5285 scan_ch->type |= (direct_mask << 1);
5286
5287 if (is_channel_narrow(ch_info))
5288 scan_ch->type |= (1 << 7);
5289
5290 scan_ch->active_dwell = cpu_to_le16(active_dwell);
5291 scan_ch->passive_dwell = cpu_to_le16(passive_dwell);
5292
5293 /* Set txpower levels to defaults */
5294 scan_ch->tpc.dsp_atten = 110;
5295 /* scan_pwr_info->tpc.dsp_atten; */
5296
5297 /*scan_pwr_info->tpc.tx_gain; */
5298 if (phymode == MODE_IEEE80211A)
5299 scan_ch->tpc.tx_gain = ((1 << 5) | (3 << 3)) | 3;
5300 else {
5301 scan_ch->tpc.tx_gain = ((1 << 5) | (5 << 3));
5302 /* NOTE: if we were doing 6Mb OFDM for scans we'd use
5303 * power level:
5304 * scan_ch->tpc.tx_gain = ((1 << 5) | (2 << 3)) | 3;
5305 */
5306 }
5307
5308 IWL_DEBUG_SCAN("Scanning %d [%s %d]\n",
5309 scan_ch->channel,
5310 (scan_ch->type & 1) ? "ACTIVE" : "PASSIVE",
5311 (scan_ch->type & 1) ?
5312 active_dwell : passive_dwell);
5313
5314 scan_ch++;
5315 added++;
5316 }
5317
5318 IWL_DEBUG_SCAN("total channels to scan %d \n", added);
5319 return added;
5320 }
5321
5322 static void iwl3945_reset_channel_flag(struct iwl3945_priv *priv)
5323 {
5324 int i, j;
5325 for (i = 0; i < 3; i++) {
5326 struct ieee80211_hw_mode *hw_mode = (void *)&priv->modes[i];
5327 for (j = 0; j < hw_mode->num_channels; j++)
5328 hw_mode->channels[j].flag = hw_mode->channels[j].val;
5329 }
5330 }
5331
5332 static void iwl3945_init_hw_rates(struct iwl3945_priv *priv,
5333 struct ieee80211_rate *rates)
5334 {
5335 int i;
5336
5337 for (i = 0; i < IWL_RATE_COUNT; i++) {
5338 rates[i].rate = iwl3945_rates[i].ieee * 5;
5339 rates[i].val = i; /* Rate scaling will work on indexes */
5340 rates[i].val2 = i;
5341 rates[i].flags = IEEE80211_RATE_SUPPORTED;
5342 /* Only OFDM have the bits-per-symbol set */
5343 if ((i <= IWL_LAST_OFDM_RATE) && (i >= IWL_FIRST_OFDM_RATE))
5344 rates[i].flags |= IEEE80211_RATE_OFDM;
5345 else {
5346 /*
5347 * If CCK 1M then set rate flag to CCK else CCK_2
5348 * which is CCK | PREAMBLE2
5349 */
5350 rates[i].flags |= (iwl3945_rates[i].plcp == 10) ?
5351 IEEE80211_RATE_CCK : IEEE80211_RATE_CCK_2;
5352 }
5353
5354 /* Set up which ones are basic rates... */
5355 if (IWL_BASIC_RATES_MASK & (1 << i))
5356 rates[i].flags |= IEEE80211_RATE_BASIC;
5357 }
5358 }
5359
5360 /**
5361 * iwl3945_init_geos - Initialize mac80211's geo/channel info based from eeprom
5362 */
5363 static int iwl3945_init_geos(struct iwl3945_priv *priv)
5364 {
5365 struct iwl3945_channel_info *ch;
5366 struct ieee80211_hw_mode *modes;
5367 struct ieee80211_channel *channels;
5368 struct ieee80211_channel *geo_ch;
5369 struct ieee80211_rate *rates;
5370 int i = 0;
5371 enum {
5372 A = 0,
5373 B = 1,
5374 G = 2,
5375 };
5376 int mode_count = 3;
5377
5378 if (priv->modes) {
5379 IWL_DEBUG_INFO("Geography modes already initialized.\n");
5380 set_bit(STATUS_GEO_CONFIGURED, &priv->status);
5381 return 0;
5382 }
5383
5384 modes = kzalloc(sizeof(struct ieee80211_hw_mode) * mode_count,
5385 GFP_KERNEL);
5386 if (!modes)
5387 return -ENOMEM;
5388
5389 channels = kzalloc(sizeof(struct ieee80211_channel) *
5390 priv->channel_count, GFP_KERNEL);
5391 if (!channels) {
5392 kfree(modes);
5393 return -ENOMEM;
5394 }
5395
5396 rates = kzalloc((sizeof(struct ieee80211_rate) * (IWL_MAX_RATES + 1)),
5397 GFP_KERNEL);
5398 if (!rates) {
5399 kfree(modes);
5400 kfree(channels);
5401 return -ENOMEM;
5402 }
5403
5404 /* 0 = 802.11a
5405 * 1 = 802.11b
5406 * 2 = 802.11g
5407 */
5408
5409 /* 5.2GHz channels start after the 2.4GHz channels */
5410 modes[A].mode = MODE_IEEE80211A;
5411 modes[A].channels = &channels[ARRAY_SIZE(iwl3945_eeprom_band_1)];
5412 modes[A].rates = &rates[4];
5413 modes[A].num_rates = 8; /* just OFDM */
5414 modes[A].num_channels = 0;
5415
5416 modes[B].mode = MODE_IEEE80211B;
5417 modes[B].channels = channels;
5418 modes[B].rates = rates;
5419 modes[B].num_rates = 4; /* just CCK */
5420 modes[B].num_channels = 0;
5421
5422 modes[G].mode = MODE_IEEE80211G;
5423 modes[G].channels = channels;
5424 modes[G].rates = rates;
5425 modes[G].num_rates = 12; /* OFDM & CCK */
5426 modes[G].num_channels = 0;
5427
5428 priv->ieee_channels = channels;
5429 priv->ieee_rates = rates;
5430
5431 iwl3945_init_hw_rates(priv, rates);
5432
5433 for (i = 0, geo_ch = channels; i < priv->channel_count; i++) {
5434 ch = &priv->channel_info[i];
5435
5436 if (!is_channel_valid(ch)) {
5437 IWL_DEBUG_INFO("Channel %d [%sGHz] is restricted -- "
5438 "skipping.\n",
5439 ch->channel, is_channel_a_band(ch) ?
5440 "5.2" : "2.4");
5441 continue;
5442 }
5443
5444 if (is_channel_a_band(ch))
5445 geo_ch = &modes[A].channels[modes[A].num_channels++];
5446 else {
5447 geo_ch = &modes[B].channels[modes[B].num_channels++];
5448 modes[G].num_channels++;
5449 }
5450
5451 geo_ch->freq = ieee80211chan2mhz(ch->channel);
5452 geo_ch->chan = ch->channel;
5453 geo_ch->power_level = ch->max_power_avg;
5454 geo_ch->antenna_max = 0xff;
5455
5456 if (is_channel_valid(ch)) {
5457 geo_ch->flag = IEEE80211_CHAN_W_SCAN;
5458 if (ch->flags & EEPROM_CHANNEL_IBSS)
5459 geo_ch->flag |= IEEE80211_CHAN_W_IBSS;
5460
5461 if (ch->flags & EEPROM_CHANNEL_ACTIVE)
5462 geo_ch->flag |= IEEE80211_CHAN_W_ACTIVE_SCAN;
5463
5464 if (ch->flags & EEPROM_CHANNEL_RADAR)
5465 geo_ch->flag |= IEEE80211_CHAN_W_RADAR_DETECT;
5466
5467 if (ch->max_power_avg > priv->max_channel_txpower_limit)
5468 priv->max_channel_txpower_limit =
5469 ch->max_power_avg;
5470 }
5471
5472 geo_ch->val = geo_ch->flag;
5473 }
5474
5475 if ((modes[A].num_channels == 0) && priv->is_abg) {
5476 printk(KERN_INFO DRV_NAME
5477 ": Incorrectly detected BG card as ABG. Please send "
5478 "your PCI ID 0x%04X:0x%04X to maintainer.\n",
5479 priv->pci_dev->device, priv->pci_dev->subsystem_device);
5480 priv->is_abg = 0;
5481 }
5482
5483 printk(KERN_INFO DRV_NAME
5484 ": Tunable channels: %d 802.11bg, %d 802.11a channels\n",
5485 modes[G].num_channels, modes[A].num_channels);
5486
5487 /*
5488 * NOTE: We register these in preference of order -- the
5489 * stack doesn't currently (as of 7.0.6 / Apr 24 '07) pick
5490 * a phymode based on rates or AP capabilities but seems to
5491 * configure it purely on if the channel being configured
5492 * is supported by a mode -- and the first match is taken
5493 */
5494
5495 if (modes[G].num_channels)
5496 ieee80211_register_hwmode(priv->hw, &modes[G]);
5497 if (modes[B].num_channels)
5498 ieee80211_register_hwmode(priv->hw, &modes[B]);
5499 if (modes[A].num_channels)
5500 ieee80211_register_hwmode(priv->hw, &modes[A]);
5501
5502 priv->modes = modes;
5503 set_bit(STATUS_GEO_CONFIGURED, &priv->status);
5504
5505 return 0;
5506 }
5507
5508 /*
5509 * iwl3945_free_geos - undo allocations in iwl3945_init_geos
5510 */
5511 static void iwl3945_free_geos(struct iwl3945_priv *priv)
5512 {
5513 kfree(priv->modes);
5514 kfree(priv->ieee_channels);
5515 kfree(priv->ieee_rates);
5516 clear_bit(STATUS_GEO_CONFIGURED, &priv->status);
5517 }
5518
5519 /******************************************************************************
5520 *
5521 * uCode download functions
5522 *
5523 ******************************************************************************/
5524
5525 static void iwl3945_dealloc_ucode_pci(struct iwl3945_priv *priv)
5526 {
5527 iwl_free_fw_desc(priv->pci_dev, &priv->ucode_code);
5528 iwl_free_fw_desc(priv->pci_dev, &priv->ucode_data);
5529 iwl_free_fw_desc(priv->pci_dev, &priv->ucode_data_backup);
5530 iwl_free_fw_desc(priv->pci_dev, &priv->ucode_init);
5531 iwl_free_fw_desc(priv->pci_dev, &priv->ucode_init_data);
5532 iwl_free_fw_desc(priv->pci_dev, &priv->ucode_boot);
5533 }
5534
5535 /**
5536 * iwl3945_verify_inst_full - verify runtime uCode image in card vs. host,
5537 * looking at all data.
5538 */
5539 static int iwl3945_verify_inst_full(struct iwl3945_priv *priv, __le32 * image, u32 len)
5540 {
5541 u32 val;
5542 u32 save_len = len;
5543 int rc = 0;
5544 u32 errcnt;
5545
5546 IWL_DEBUG_INFO("ucode inst image size is %u\n", len);
5547
5548 rc = iwl3945_grab_nic_access(priv);
5549 if (rc)
5550 return rc;
5551
5552 iwl3945_write_direct32(priv, HBUS_TARG_MEM_RADDR, RTC_INST_LOWER_BOUND);
5553
5554 errcnt = 0;
5555 for (; len > 0; len -= sizeof(u32), image++) {
5556 /* read data comes through single port, auto-incr addr */
5557 /* NOTE: Use the debugless read so we don't flood kernel log
5558 * if IWL_DL_IO is set */
5559 val = _iwl3945_read_direct32(priv, HBUS_TARG_MEM_RDAT);
5560 if (val != le32_to_cpu(*image)) {
5561 IWL_ERROR("uCode INST section is invalid at "
5562 "offset 0x%x, is 0x%x, s/b 0x%x\n",
5563 save_len - len, val, le32_to_cpu(*image));
5564 rc = -EIO;
5565 errcnt++;
5566 if (errcnt >= 20)
5567 break;
5568 }
5569 }
5570
5571 iwl3945_release_nic_access(priv);
5572
5573 if (!errcnt)
5574 IWL_DEBUG_INFO("ucode image in INSTRUCTION memory is good\n");
5575
5576 return rc;
5577 }
5578
5579
5580 /**
5581 * iwl3945_verify_inst_sparse - verify runtime uCode image in card vs. host,
5582 * using sample data 100 bytes apart. If these sample points are good,
5583 * it's a pretty good bet that everything between them is good, too.
5584 */
5585 static int iwl3945_verify_inst_sparse(struct iwl3945_priv *priv, __le32 *image, u32 len)
5586 {
5587 u32 val;
5588 int rc = 0;
5589 u32 errcnt = 0;
5590 u32 i;
5591
5592 IWL_DEBUG_INFO("ucode inst image size is %u\n", len);
5593
5594 rc = iwl3945_grab_nic_access(priv);
5595 if (rc)
5596 return rc;
5597
5598 for (i = 0; i < len; i += 100, image += 100/sizeof(u32)) {
5599 /* read data comes through single port, auto-incr addr */
5600 /* NOTE: Use the debugless read so we don't flood kernel log
5601 * if IWL_DL_IO is set */
5602 iwl3945_write_direct32(priv, HBUS_TARG_MEM_RADDR,
5603 i + RTC_INST_LOWER_BOUND);
5604 val = _iwl3945_read_direct32(priv, HBUS_TARG_MEM_RDAT);
5605 if (val != le32_to_cpu(*image)) {
5606 #if 0 /* Enable this if you want to see details */
5607 IWL_ERROR("uCode INST section is invalid at "
5608 "offset 0x%x, is 0x%x, s/b 0x%x\n",
5609 i, val, *image);
5610 #endif
5611 rc = -EIO;
5612 errcnt++;
5613 if (errcnt >= 3)
5614 break;
5615 }
5616 }
5617
5618 iwl3945_release_nic_access(priv);
5619
5620 return rc;
5621 }
5622
5623
5624 /**
5625 * iwl3945_verify_ucode - determine which instruction image is in SRAM,
5626 * and verify its contents
5627 */
5628 static int iwl3945_verify_ucode(struct iwl3945_priv *priv)
5629 {
5630 __le32 *image;
5631 u32 len;
5632 int rc = 0;
5633
5634 /* Try bootstrap */
5635 image = (__le32 *)priv->ucode_boot.v_addr;
5636 len = priv->ucode_boot.len;
5637 rc = iwl3945_verify_inst_sparse(priv, image, len);
5638 if (rc == 0) {
5639 IWL_DEBUG_INFO("Bootstrap uCode is good in inst SRAM\n");
5640 return 0;
5641 }
5642
5643 /* Try initialize */
5644 image = (__le32 *)priv->ucode_init.v_addr;
5645 len = priv->ucode_init.len;
5646 rc = iwl3945_verify_inst_sparse(priv, image, len);
5647 if (rc == 0) {
5648 IWL_DEBUG_INFO("Initialize uCode is good in inst SRAM\n");
5649 return 0;
5650 }
5651
5652 /* Try runtime/protocol */
5653 image = (__le32 *)priv->ucode_code.v_addr;
5654 len = priv->ucode_code.len;
5655 rc = iwl3945_verify_inst_sparse(priv, image, len);
5656 if (rc == 0) {
5657 IWL_DEBUG_INFO("Runtime uCode is good in inst SRAM\n");
5658 return 0;
5659 }
5660
5661 IWL_ERROR("NO VALID UCODE IMAGE IN INSTRUCTION SRAM!!\n");
5662
5663 /* Since nothing seems to match, show first several data entries in
5664 * instruction SRAM, so maybe visual inspection will give a clue.
5665 * Selection of bootstrap image (vs. other images) is arbitrary. */
5666 image = (__le32 *)priv->ucode_boot.v_addr;
5667 len = priv->ucode_boot.len;
5668 rc = iwl3945_verify_inst_full(priv, image, len);
5669
5670 return rc;
5671 }
5672
5673
5674 /* check contents of special bootstrap uCode SRAM */
5675 static int iwl3945_verify_bsm(struct iwl3945_priv *priv)
5676 {
5677 __le32 *image = priv->ucode_boot.v_addr;
5678 u32 len = priv->ucode_boot.len;
5679 u32 reg;
5680 u32 val;
5681
5682 IWL_DEBUG_INFO("Begin verify bsm\n");
5683
5684 /* verify BSM SRAM contents */
5685 val = iwl3945_read_prph(priv, BSM_WR_DWCOUNT_REG);
5686 for (reg = BSM_SRAM_LOWER_BOUND;
5687 reg < BSM_SRAM_LOWER_BOUND + len;
5688 reg += sizeof(u32), image ++) {
5689 val = iwl3945_read_prph(priv, reg);
5690 if (val != le32_to_cpu(*image)) {
5691 IWL_ERROR("BSM uCode verification failed at "
5692 "addr 0x%08X+%u (of %u), is 0x%x, s/b 0x%x\n",
5693 BSM_SRAM_LOWER_BOUND,
5694 reg - BSM_SRAM_LOWER_BOUND, len,
5695 val, le32_to_cpu(*image));
5696 return -EIO;
5697 }
5698 }
5699
5700 IWL_DEBUG_INFO("BSM bootstrap uCode image OK\n");
5701
5702 return 0;
5703 }
5704
5705 /**
5706 * iwl3945_load_bsm - Load bootstrap instructions
5707 *
5708 * BSM operation:
5709 *
5710 * The Bootstrap State Machine (BSM) stores a short bootstrap uCode program
5711 * in special SRAM that does not power down during RFKILL. When powering back
5712 * up after power-saving sleeps (or during initial uCode load), the BSM loads
5713 * the bootstrap program into the on-board processor, and starts it.
5714 *
5715 * The bootstrap program loads (via DMA) instructions and data for a new
5716 * program from host DRAM locations indicated by the host driver in the
5717 * BSM_DRAM_* registers. Once the new program is loaded, it starts
5718 * automatically.
5719 *
5720 * When initializing the NIC, the host driver points the BSM to the
5721 * "initialize" uCode image. This uCode sets up some internal data, then
5722 * notifies host via "initialize alive" that it is complete.
5723 *
5724 * The host then replaces the BSM_DRAM_* pointer values to point to the
5725 * normal runtime uCode instructions and a backup uCode data cache buffer
5726 * (filled initially with starting data values for the on-board processor),
5727 * then triggers the "initialize" uCode to load and launch the runtime uCode,
5728 * which begins normal operation.
5729 *
5730 * When doing a power-save shutdown, runtime uCode saves data SRAM into
5731 * the backup data cache in DRAM before SRAM is powered down.
5732 *
5733 * When powering back up, the BSM loads the bootstrap program. This reloads
5734 * the runtime uCode instructions and the backup data cache into SRAM,
5735 * and re-launches the runtime uCode from where it left off.
5736 */
5737 static int iwl3945_load_bsm(struct iwl3945_priv *priv)
5738 {
5739 __le32 *image = priv->ucode_boot.v_addr;
5740 u32 len = priv->ucode_boot.len;
5741 dma_addr_t pinst;
5742 dma_addr_t pdata;
5743 u32 inst_len;
5744 u32 data_len;
5745 int rc;
5746 int i;
5747 u32 done;
5748 u32 reg_offset;
5749
5750 IWL_DEBUG_INFO("Begin load bsm\n");
5751
5752 /* make sure bootstrap program is no larger than BSM's SRAM size */
5753 if (len > IWL_MAX_BSM_SIZE)
5754 return -EINVAL;
5755
5756 /* Tell bootstrap uCode where to find the "Initialize" uCode
5757 * in host DRAM ... host DRAM physical address bits 31:0 for 3945.
5758 * NOTE: iwl3945_initialize_alive_start() will replace these values,
5759 * after the "initialize" uCode has run, to point to
5760 * runtime/protocol instructions and backup data cache. */
5761 pinst = priv->ucode_init.p_addr;
5762 pdata = priv->ucode_init_data.p_addr;
5763 inst_len = priv->ucode_init.len;
5764 data_len = priv->ucode_init_data.len;
5765
5766 rc = iwl3945_grab_nic_access(priv);
5767 if (rc)
5768 return rc;
5769
5770 iwl3945_write_prph(priv, BSM_DRAM_INST_PTR_REG, pinst);
5771 iwl3945_write_prph(priv, BSM_DRAM_DATA_PTR_REG, pdata);
5772 iwl3945_write_prph(priv, BSM_DRAM_INST_BYTECOUNT_REG, inst_len);
5773 iwl3945_write_prph(priv, BSM_DRAM_DATA_BYTECOUNT_REG, data_len);
5774
5775 /* Fill BSM memory with bootstrap instructions */
5776 for (reg_offset = BSM_SRAM_LOWER_BOUND;
5777 reg_offset < BSM_SRAM_LOWER_BOUND + len;
5778 reg_offset += sizeof(u32), image++)
5779 _iwl3945_write_prph(priv, reg_offset,
5780 le32_to_cpu(*image));
5781
5782 rc = iwl3945_verify_bsm(priv);
5783 if (rc) {
5784 iwl3945_release_nic_access(priv);
5785 return rc;
5786 }
5787
5788 /* Tell BSM to copy from BSM SRAM into instruction SRAM, when asked */
5789 iwl3945_write_prph(priv, BSM_WR_MEM_SRC_REG, 0x0);
5790 iwl3945_write_prph(priv, BSM_WR_MEM_DST_REG,
5791 RTC_INST_LOWER_BOUND);
5792 iwl3945_write_prph(priv, BSM_WR_DWCOUNT_REG, len / sizeof(u32));
5793
5794 /* Load bootstrap code into instruction SRAM now,
5795 * to prepare to load "initialize" uCode */
5796 iwl3945_write_prph(priv, BSM_WR_CTRL_REG,
5797 BSM_WR_CTRL_REG_BIT_START);
5798
5799 /* Wait for load of bootstrap uCode to finish */
5800 for (i = 0; i < 100; i++) {
5801 done = iwl3945_read_prph(priv, BSM_WR_CTRL_REG);
5802 if (!(done & BSM_WR_CTRL_REG_BIT_START))
5803 break;
5804 udelay(10);
5805 }
5806 if (i < 100)
5807 IWL_DEBUG_INFO("BSM write complete, poll %d iterations\n", i);
5808 else {
5809 IWL_ERROR("BSM write did not complete!\n");
5810 return -EIO;
5811 }
5812
5813 /* Enable future boot loads whenever power management unit triggers it
5814 * (e.g. when powering back up after power-save shutdown) */
5815 iwl3945_write_prph(priv, BSM_WR_CTRL_REG,
5816 BSM_WR_CTRL_REG_BIT_START_EN);
5817
5818 iwl3945_release_nic_access(priv);
5819
5820 return 0;
5821 }
5822
5823 static void iwl3945_nic_start(struct iwl3945_priv *priv)
5824 {
5825 /* Remove all resets to allow NIC to operate */
5826 iwl3945_write32(priv, CSR_RESET, 0);
5827 }
5828
5829 /**
5830 * iwl3945_read_ucode - Read uCode images from disk file.
5831 *
5832 * Copy into buffers for card to fetch via bus-mastering
5833 */
5834 static int iwl3945_read_ucode(struct iwl3945_priv *priv)
5835 {
5836 struct iwl3945_ucode *ucode;
5837 int ret = 0;
5838 const struct firmware *ucode_raw;
5839 /* firmware file name contains uCode/driver compatibility version */
5840 const char *name = "iwlwifi-3945" IWL3945_UCODE_API ".ucode";
5841 u8 *src;
5842 size_t len;
5843 u32 ver, inst_size, data_size, init_size, init_data_size, boot_size;
5844
5845 /* Ask kernel firmware_class module to get the boot firmware off disk.
5846 * request_firmware() is synchronous, file is in memory on return. */
5847 ret = request_firmware(&ucode_raw, name, &priv->pci_dev->dev);
5848 if (ret < 0) {
5849 IWL_ERROR("%s firmware file req failed: Reason %d\n",
5850 name, ret);
5851 goto error;
5852 }
5853
5854 IWL_DEBUG_INFO("Got firmware '%s' file (%zd bytes) from disk\n",
5855 name, ucode_raw->size);
5856
5857 /* Make sure that we got at least our header! */
5858 if (ucode_raw->size < sizeof(*ucode)) {
5859 IWL_ERROR("File size way too small!\n");
5860 ret = -EINVAL;
5861 goto err_release;
5862 }
5863
5864 /* Data from ucode file: header followed by uCode images */
5865 ucode = (void *)ucode_raw->data;
5866
5867 ver = le32_to_cpu(ucode->ver);
5868 inst_size = le32_to_cpu(ucode->inst_size);
5869 data_size = le32_to_cpu(ucode->data_size);
5870 init_size = le32_to_cpu(ucode->init_size);
5871 init_data_size = le32_to_cpu(ucode->init_data_size);
5872 boot_size = le32_to_cpu(ucode->boot_size);
5873
5874 IWL_DEBUG_INFO("f/w package hdr ucode version = 0x%x\n", ver);
5875 IWL_DEBUG_INFO("f/w package hdr runtime inst size = %u\n", inst_size);
5876 IWL_DEBUG_INFO("f/w package hdr runtime data size = %u\n", data_size);
5877 IWL_DEBUG_INFO("f/w package hdr init inst size = %u\n", init_size);
5878 IWL_DEBUG_INFO("f/w package hdr init data size = %u\n", init_data_size);
5879 IWL_DEBUG_INFO("f/w package hdr boot inst size = %u\n", boot_size);
5880
5881 /* Verify size of file vs. image size info in file's header */
5882 if (ucode_raw->size < sizeof(*ucode) +
5883 inst_size + data_size + init_size +
5884 init_data_size + boot_size) {
5885
5886 IWL_DEBUG_INFO("uCode file size %d too small\n",
5887 (int)ucode_raw->size);
5888 ret = -EINVAL;
5889 goto err_release;
5890 }
5891
5892 /* Verify that uCode images will fit in card's SRAM */
5893 if (inst_size > IWL_MAX_INST_SIZE) {
5894 IWL_DEBUG_INFO("uCode instr len %d too large to fit in\n",
5895 inst_size);
5896 ret = -EINVAL;
5897 goto err_release;
5898 }
5899
5900 if (data_size > IWL_MAX_DATA_SIZE) {
5901 IWL_DEBUG_INFO("uCode data len %d too large to fit in\n",
5902 data_size);
5903 ret = -EINVAL;
5904 goto err_release;
5905 }
5906 if (init_size > IWL_MAX_INST_SIZE) {
5907 IWL_DEBUG_INFO("uCode init instr len %d too large to fit in\n",
5908 init_size);
5909 ret = -EINVAL;
5910 goto err_release;
5911 }
5912 if (init_data_size > IWL_MAX_DATA_SIZE) {
5913 IWL_DEBUG_INFO("uCode init data len %d too large to fit in\n",
5914 init_data_size);
5915 ret = -EINVAL;
5916 goto err_release;
5917 }
5918 if (boot_size > IWL_MAX_BSM_SIZE) {
5919 IWL_DEBUG_INFO("uCode boot instr len %d too large to fit in\n",
5920 boot_size);
5921 ret = -EINVAL;
5922 goto err_release;
5923 }
5924
5925 /* Allocate ucode buffers for card's bus-master loading ... */
5926
5927 /* Runtime instructions and 2 copies of data:
5928 * 1) unmodified from disk
5929 * 2) backup cache for save/restore during power-downs */
5930 priv->ucode_code.len = inst_size;
5931 iwl_alloc_fw_desc(priv->pci_dev, &priv->ucode_code);
5932
5933 priv->ucode_data.len = data_size;
5934 iwl_alloc_fw_desc(priv->pci_dev, &priv->ucode_data);
5935
5936 priv->ucode_data_backup.len = data_size;
5937 iwl_alloc_fw_desc(priv->pci_dev, &priv->ucode_data_backup);
5938
5939 if (!priv->ucode_code.v_addr || !priv->ucode_data.v_addr ||
5940 !priv->ucode_data_backup.v_addr)
5941 goto err_pci_alloc;
5942
5943 /* Initialization instructions and data */
5944 if (init_size && init_data_size) {
5945 priv->ucode_init.len = init_size;
5946 iwl_alloc_fw_desc(priv->pci_dev, &priv->ucode_init);
5947
5948 priv->ucode_init_data.len = init_data_size;
5949 iwl_alloc_fw_desc(priv->pci_dev, &priv->ucode_init_data);
5950
5951 if (!priv->ucode_init.v_addr || !priv->ucode_init_data.v_addr)
5952 goto err_pci_alloc;
5953 }
5954
5955 /* Bootstrap (instructions only, no data) */
5956 if (boot_size) {
5957 priv->ucode_boot.len = boot_size;
5958 iwl_alloc_fw_desc(priv->pci_dev, &priv->ucode_boot);
5959
5960 if (!priv->ucode_boot.v_addr)
5961 goto err_pci_alloc;
5962 }
5963
5964 /* Copy images into buffers for card's bus-master reads ... */
5965
5966 /* Runtime instructions (first block of data in file) */
5967 src = &ucode->data[0];
5968 len = priv->ucode_code.len;
5969 IWL_DEBUG_INFO("Copying (but not loading) uCode instr len %Zd\n", len);
5970 memcpy(priv->ucode_code.v_addr, src, len);
5971 IWL_DEBUG_INFO("uCode instr buf vaddr = 0x%p, paddr = 0x%08x\n",
5972 priv->ucode_code.v_addr, (u32)priv->ucode_code.p_addr);
5973
5974 /* Runtime data (2nd block)
5975 * NOTE: Copy into backup buffer will be done in iwl3945_up() */
5976 src = &ucode->data[inst_size];
5977 len = priv->ucode_data.len;
5978 IWL_DEBUG_INFO("Copying (but not loading) uCode data len %Zd\n", len);
5979 memcpy(priv->ucode_data.v_addr, src, len);
5980 memcpy(priv->ucode_data_backup.v_addr, src, len);
5981
5982 /* Initialization instructions (3rd block) */
5983 if (init_size) {
5984 src = &ucode->data[inst_size + data_size];
5985 len = priv->ucode_init.len;
5986 IWL_DEBUG_INFO("Copying (but not loading) init instr len %Zd\n",
5987 len);
5988 memcpy(priv->ucode_init.v_addr, src, len);
5989 }
5990
5991 /* Initialization data (4th block) */
5992 if (init_data_size) {
5993 src = &ucode->data[inst_size + data_size + init_size];
5994 len = priv->ucode_init_data.len;
5995 IWL_DEBUG_INFO("Copying (but not loading) init data len %d\n",
5996 (int)len);
5997 memcpy(priv->ucode_init_data.v_addr, src, len);
5998 }
5999
6000 /* Bootstrap instructions (5th block) */
6001 src = &ucode->data[inst_size + data_size + init_size + init_data_size];
6002 len = priv->ucode_boot.len;
6003 IWL_DEBUG_INFO("Copying (but not loading) boot instr len %d\n",
6004 (int)len);
6005 memcpy(priv->ucode_boot.v_addr, src, len);
6006
6007 /* We have our copies now, allow OS release its copies */
6008 release_firmware(ucode_raw);
6009 return 0;
6010
6011 err_pci_alloc:
6012 IWL_ERROR("failed to allocate pci memory\n");
6013 ret = -ENOMEM;
6014 iwl3945_dealloc_ucode_pci(priv);
6015
6016 err_release:
6017 release_firmware(ucode_raw);
6018
6019 error:
6020 return ret;
6021 }
6022
6023
6024 /**
6025 * iwl3945_set_ucode_ptrs - Set uCode address location
6026 *
6027 * Tell initialization uCode where to find runtime uCode.
6028 *
6029 * BSM registers initially contain pointers to initialization uCode.
6030 * We need to replace them to load runtime uCode inst and data,
6031 * and to save runtime data when powering down.
6032 */
6033 static int iwl3945_set_ucode_ptrs(struct iwl3945_priv *priv)
6034 {
6035 dma_addr_t pinst;
6036 dma_addr_t pdata;
6037 int rc = 0;
6038 unsigned long flags;
6039
6040 /* bits 31:0 for 3945 */
6041 pinst = priv->ucode_code.p_addr;
6042 pdata = priv->ucode_data_backup.p_addr;
6043
6044 spin_lock_irqsave(&priv->lock, flags);
6045 rc = iwl3945_grab_nic_access(priv);
6046 if (rc) {
6047 spin_unlock_irqrestore(&priv->lock, flags);
6048 return rc;
6049 }
6050
6051 /* Tell bootstrap uCode where to find image to load */
6052 iwl3945_write_prph(priv, BSM_DRAM_INST_PTR_REG, pinst);
6053 iwl3945_write_prph(priv, BSM_DRAM_DATA_PTR_REG, pdata);
6054 iwl3945_write_prph(priv, BSM_DRAM_DATA_BYTECOUNT_REG,
6055 priv->ucode_data.len);
6056
6057 /* Inst bytecount must be last to set up, bit 31 signals uCode
6058 * that all new ptr/size info is in place */
6059 iwl3945_write_prph(priv, BSM_DRAM_INST_BYTECOUNT_REG,
6060 priv->ucode_code.len | BSM_DRAM_INST_LOAD);
6061
6062 iwl3945_release_nic_access(priv);
6063
6064 spin_unlock_irqrestore(&priv->lock, flags);
6065
6066 IWL_DEBUG_INFO("Runtime uCode pointers are set.\n");
6067
6068 return rc;
6069 }
6070
6071 /**
6072 * iwl3945_init_alive_start - Called after REPLY_ALIVE notification received
6073 *
6074 * Called after REPLY_ALIVE notification received from "initialize" uCode.
6075 *
6076 * Tell "initialize" uCode to go ahead and load the runtime uCode.
6077 */
6078 static void iwl3945_init_alive_start(struct iwl3945_priv *priv)
6079 {
6080 /* Check alive response for "valid" sign from uCode */
6081 if (priv->card_alive_init.is_valid != UCODE_VALID_OK) {
6082 /* We had an error bringing up the hardware, so take it
6083 * all the way back down so we can try again */
6084 IWL_DEBUG_INFO("Initialize Alive failed.\n");
6085 goto restart;
6086 }
6087
6088 /* Bootstrap uCode has loaded initialize uCode ... verify inst image.
6089 * This is a paranoid check, because we would not have gotten the
6090 * "initialize" alive if code weren't properly loaded. */
6091 if (iwl3945_verify_ucode(priv)) {
6092 /* Runtime instruction load was bad;
6093 * take it all the way back down so we can try again */
6094 IWL_DEBUG_INFO("Bad \"initialize\" uCode load.\n");
6095 goto restart;
6096 }
6097
6098 /* Send pointers to protocol/runtime uCode image ... init code will
6099 * load and launch runtime uCode, which will send us another "Alive"
6100 * notification. */
6101 IWL_DEBUG_INFO("Initialization Alive received.\n");
6102 if (iwl3945_set_ucode_ptrs(priv)) {
6103 /* Runtime instruction load won't happen;
6104 * take it all the way back down so we can try again */
6105 IWL_DEBUG_INFO("Couldn't set up uCode pointers.\n");
6106 goto restart;
6107 }
6108 return;
6109
6110 restart:
6111 queue_work(priv->workqueue, &priv->restart);
6112 }
6113
6114
6115 /**
6116 * iwl3945_alive_start - called after REPLY_ALIVE notification received
6117 * from protocol/runtime uCode (initialization uCode's
6118 * Alive gets handled by iwl3945_init_alive_start()).
6119 */
6120 static void iwl3945_alive_start(struct iwl3945_priv *priv)
6121 {
6122 int rc = 0;
6123 int thermal_spin = 0;
6124 u32 rfkill;
6125
6126 IWL_DEBUG_INFO("Runtime Alive received.\n");
6127
6128 if (priv->card_alive.is_valid != UCODE_VALID_OK) {
6129 /* We had an error bringing up the hardware, so take it
6130 * all the way back down so we can try again */
6131 IWL_DEBUG_INFO("Alive failed.\n");
6132 goto restart;
6133 }
6134
6135 /* Initialize uCode has loaded Runtime uCode ... verify inst image.
6136 * This is a paranoid check, because we would not have gotten the
6137 * "runtime" alive if code weren't properly loaded. */
6138 if (iwl3945_verify_ucode(priv)) {
6139 /* Runtime instruction load was bad;
6140 * take it all the way back down so we can try again */
6141 IWL_DEBUG_INFO("Bad runtime uCode load.\n");
6142 goto restart;
6143 }
6144
6145 iwl3945_clear_stations_table(priv);
6146
6147 rc = iwl3945_grab_nic_access(priv);
6148 if (rc) {
6149 IWL_WARNING("Can not read rfkill status from adapter\n");
6150 return;
6151 }
6152
6153 rfkill = iwl3945_read_prph(priv, APMG_RFKILL_REG);
6154 IWL_DEBUG_INFO("RFKILL status: 0x%x\n", rfkill);
6155 iwl3945_release_nic_access(priv);
6156
6157 if (rfkill & 0x1) {
6158 clear_bit(STATUS_RF_KILL_HW, &priv->status);
6159 /* if rfkill is not on, then wait for thermal
6160 * sensor in adapter to kick in */
6161 while (iwl3945_hw_get_temperature(priv) == 0) {
6162 thermal_spin++;
6163 udelay(10);
6164 }
6165
6166 if (thermal_spin)
6167 IWL_DEBUG_INFO("Thermal calibration took %dus\n",
6168 thermal_spin * 10);
6169 } else
6170 set_bit(STATUS_RF_KILL_HW, &priv->status);
6171
6172 /* After the ALIVE response, we can send commands to 3945 uCode */
6173 set_bit(STATUS_ALIVE, &priv->status);
6174
6175 /* Clear out the uCode error bit if it is set */
6176 clear_bit(STATUS_FW_ERROR, &priv->status);
6177
6178 if (iwl3945_is_rfkill(priv))
6179 return;
6180
6181 ieee80211_start_queues(priv->hw);
6182
6183 priv->active_rate = priv->rates_mask;
6184 priv->active_rate_basic = priv->rates_mask & IWL_BASIC_RATES_MASK;
6185
6186 iwl3945_send_power_mode(priv, IWL_POWER_LEVEL(priv->power_mode));
6187
6188 if (iwl3945_is_associated(priv)) {
6189 struct iwl3945_rxon_cmd *active_rxon =
6190 (struct iwl3945_rxon_cmd *)(&priv->active_rxon);
6191
6192 memcpy(&priv->staging_rxon, &priv->active_rxon,
6193 sizeof(priv->staging_rxon));
6194 active_rxon->filter_flags &= ~RXON_FILTER_ASSOC_MSK;
6195 } else {
6196 /* Initialize our rx_config data */
6197 iwl3945_connection_init_rx_config(priv);
6198 memcpy(priv->staging_rxon.node_addr, priv->mac_addr, ETH_ALEN);
6199 }
6200
6201 /* Configure Bluetooth device coexistence support */
6202 iwl3945_send_bt_config(priv);
6203
6204 /* Configure the adapter for unassociated operation */
6205 iwl3945_commit_rxon(priv);
6206
6207 /* At this point, the NIC is initialized and operational */
6208 priv->notif_missed_beacons = 0;
6209 set_bit(STATUS_READY, &priv->status);
6210
6211 iwl3945_reg_txpower_periodic(priv);
6212
6213 IWL_DEBUG_INFO("ALIVE processing complete.\n");
6214 wake_up_interruptible(&priv->wait_command_queue);
6215
6216 if (priv->error_recovering)
6217 iwl3945_error_recovery(priv);
6218
6219 return;
6220
6221 restart:
6222 queue_work(priv->workqueue, &priv->restart);
6223 }
6224
6225 static void iwl3945_cancel_deferred_work(struct iwl3945_priv *priv);
6226
6227 static void __iwl3945_down(struct iwl3945_priv *priv)
6228 {
6229 unsigned long flags;
6230 int exit_pending = test_bit(STATUS_EXIT_PENDING, &priv->status);
6231 struct ieee80211_conf *conf = NULL;
6232
6233 IWL_DEBUG_INFO(DRV_NAME " is going down\n");
6234
6235 conf = ieee80211_get_hw_conf(priv->hw);
6236
6237 if (!exit_pending)
6238 set_bit(STATUS_EXIT_PENDING, &priv->status);
6239
6240 iwl3945_clear_stations_table(priv);
6241
6242 /* Unblock any waiting calls */
6243 wake_up_interruptible_all(&priv->wait_command_queue);
6244
6245 /* Wipe out the EXIT_PENDING status bit if we are not actually
6246 * exiting the module */
6247 if (!exit_pending)
6248 clear_bit(STATUS_EXIT_PENDING, &priv->status);
6249
6250 /* stop and reset the on-board processor */
6251 iwl3945_write32(priv, CSR_RESET, CSR_RESET_REG_FLAG_NEVO_RESET);
6252
6253 /* tell the device to stop sending interrupts */
6254 iwl3945_disable_interrupts(priv);
6255
6256 if (priv->mac80211_registered)
6257 ieee80211_stop_queues(priv->hw);
6258
6259 /* If we have not previously called iwl3945_init() then
6260 * clear all bits but the RF Kill and SUSPEND bits and return */
6261 if (!iwl3945_is_init(priv)) {
6262 priv->status = test_bit(STATUS_RF_KILL_HW, &priv->status) <<
6263 STATUS_RF_KILL_HW |
6264 test_bit(STATUS_RF_KILL_SW, &priv->status) <<
6265 STATUS_RF_KILL_SW |
6266 test_bit(STATUS_GEO_CONFIGURED, &priv->status) <<
6267 STATUS_GEO_CONFIGURED |
6268 test_bit(STATUS_IN_SUSPEND, &priv->status) <<
6269 STATUS_IN_SUSPEND;
6270 goto exit;
6271 }
6272
6273 /* ...otherwise clear out all the status bits but the RF Kill and
6274 * SUSPEND bits and continue taking the NIC down. */
6275 priv->status &= test_bit(STATUS_RF_KILL_HW, &priv->status) <<
6276 STATUS_RF_KILL_HW |
6277 test_bit(STATUS_RF_KILL_SW, &priv->status) <<
6278 STATUS_RF_KILL_SW |
6279 test_bit(STATUS_GEO_CONFIGURED, &priv->status) <<
6280 STATUS_GEO_CONFIGURED |
6281 test_bit(STATUS_IN_SUSPEND, &priv->status) <<
6282 STATUS_IN_SUSPEND |
6283 test_bit(STATUS_FW_ERROR, &priv->status) <<
6284 STATUS_FW_ERROR;
6285
6286 spin_lock_irqsave(&priv->lock, flags);
6287 iwl3945_clear_bit(priv, CSR_GP_CNTRL, CSR_GP_CNTRL_REG_FLAG_MAC_ACCESS_REQ);
6288 spin_unlock_irqrestore(&priv->lock, flags);
6289
6290 iwl3945_hw_txq_ctx_stop(priv);
6291 iwl3945_hw_rxq_stop(priv);
6292
6293 spin_lock_irqsave(&priv->lock, flags);
6294 if (!iwl3945_grab_nic_access(priv)) {
6295 iwl3945_write_prph(priv, APMG_CLK_DIS_REG,
6296 APMG_CLK_VAL_DMA_CLK_RQT);
6297 iwl3945_release_nic_access(priv);
6298 }
6299 spin_unlock_irqrestore(&priv->lock, flags);
6300
6301 udelay(5);
6302
6303 iwl3945_hw_nic_stop_master(priv);
6304 iwl3945_set_bit(priv, CSR_RESET, CSR_RESET_REG_FLAG_SW_RESET);
6305 iwl3945_hw_nic_reset(priv);
6306
6307 exit:
6308 memset(&priv->card_alive, 0, sizeof(struct iwl3945_alive_resp));
6309
6310 if (priv->ibss_beacon)
6311 dev_kfree_skb(priv->ibss_beacon);
6312 priv->ibss_beacon = NULL;
6313
6314 /* clear out any free frames */
6315 iwl3945_clear_free_frames(priv);
6316 }
6317
6318 static void iwl3945_down(struct iwl3945_priv *priv)
6319 {
6320 mutex_lock(&priv->mutex);
6321 __iwl3945_down(priv);
6322 mutex_unlock(&priv->mutex);
6323
6324 iwl3945_cancel_deferred_work(priv);
6325 }
6326
6327 #define MAX_HW_RESTARTS 5
6328
6329 static int __iwl3945_up(struct iwl3945_priv *priv)
6330 {
6331 int rc, i;
6332
6333 if (test_bit(STATUS_EXIT_PENDING, &priv->status)) {
6334 IWL_WARNING("Exit pending; will not bring the NIC up\n");
6335 return -EIO;
6336 }
6337
6338 if (test_bit(STATUS_RF_KILL_SW, &priv->status)) {
6339 IWL_WARNING("Radio disabled by SW RF kill (module "
6340 "parameter)\n");
6341 return -ENODEV;
6342 }
6343
6344 if (!priv->ucode_data_backup.v_addr || !priv->ucode_data.v_addr) {
6345 IWL_ERROR("ucode not available for device bringup\n");
6346 return -EIO;
6347 }
6348
6349 /* If platform's RF_KILL switch is NOT set to KILL */
6350 if (iwl3945_read32(priv, CSR_GP_CNTRL) &
6351 CSR_GP_CNTRL_REG_FLAG_HW_RF_KILL_SW)
6352 clear_bit(STATUS_RF_KILL_HW, &priv->status);
6353 else {
6354 set_bit(STATUS_RF_KILL_HW, &priv->status);
6355 if (!test_bit(STATUS_IN_SUSPEND, &priv->status)) {
6356 IWL_WARNING("Radio disabled by HW RF Kill switch\n");
6357 return -ENODEV;
6358 }
6359 }
6360
6361 iwl3945_write32(priv, CSR_INT, 0xFFFFFFFF);
6362
6363 rc = iwl3945_hw_nic_init(priv);
6364 if (rc) {
6365 IWL_ERROR("Unable to int nic\n");
6366 return rc;
6367 }
6368
6369 /* make sure rfkill handshake bits are cleared */
6370 iwl3945_write32(priv, CSR_UCODE_DRV_GP1_CLR, CSR_UCODE_SW_BIT_RFKILL);
6371 iwl3945_write32(priv, CSR_UCODE_DRV_GP1_CLR,
6372 CSR_UCODE_DRV_GP1_BIT_CMD_BLOCKED);
6373
6374 /* clear (again), then enable host interrupts */
6375 iwl3945_write32(priv, CSR_INT, 0xFFFFFFFF);
6376 iwl3945_enable_interrupts(priv);
6377
6378 /* really make sure rfkill handshake bits are cleared */
6379 iwl3945_write32(priv, CSR_UCODE_DRV_GP1_CLR, CSR_UCODE_SW_BIT_RFKILL);
6380 iwl3945_write32(priv, CSR_UCODE_DRV_GP1_CLR, CSR_UCODE_SW_BIT_RFKILL);
6381
6382 /* Copy original ucode data image from disk into backup cache.
6383 * This will be used to initialize the on-board processor's
6384 * data SRAM for a clean start when the runtime program first loads. */
6385 memcpy(priv->ucode_data_backup.v_addr, priv->ucode_data.v_addr,
6386 priv->ucode_data.len);
6387
6388 /* We return success when we resume from suspend and rf_kill is on. */
6389 if (test_bit(STATUS_RF_KILL_HW, &priv->status))
6390 return 0;
6391
6392 for (i = 0; i < MAX_HW_RESTARTS; i++) {
6393
6394 iwl3945_clear_stations_table(priv);
6395
6396 /* load bootstrap state machine,
6397 * load bootstrap program into processor's memory,
6398 * prepare to load the "initialize" uCode */
6399 rc = iwl3945_load_bsm(priv);
6400
6401 if (rc) {
6402 IWL_ERROR("Unable to set up bootstrap uCode: %d\n", rc);
6403 continue;
6404 }
6405
6406 /* start card; "initialize" will load runtime ucode */
6407 iwl3945_nic_start(priv);
6408
6409 IWL_DEBUG_INFO(DRV_NAME " is coming up\n");
6410
6411 return 0;
6412 }
6413
6414 set_bit(STATUS_EXIT_PENDING, &priv->status);
6415 __iwl3945_down(priv);
6416
6417 /* tried to restart and config the device for as long as our
6418 * patience could withstand */
6419 IWL_ERROR("Unable to initialize device after %d attempts.\n", i);
6420 return -EIO;
6421 }
6422
6423
6424 /*****************************************************************************
6425 *
6426 * Workqueue callbacks
6427 *
6428 *****************************************************************************/
6429
6430 static void iwl3945_bg_init_alive_start(struct work_struct *data)
6431 {
6432 struct iwl3945_priv *priv =
6433 container_of(data, struct iwl3945_priv, init_alive_start.work);
6434
6435 if (test_bit(STATUS_EXIT_PENDING, &priv->status))
6436 return;
6437
6438 mutex_lock(&priv->mutex);
6439 iwl3945_init_alive_start(priv);
6440 mutex_unlock(&priv->mutex);
6441 }
6442
6443 static void iwl3945_bg_alive_start(struct work_struct *data)
6444 {
6445 struct iwl3945_priv *priv =
6446 container_of(data, struct iwl3945_priv, alive_start.work);
6447
6448 if (test_bit(STATUS_EXIT_PENDING, &priv->status))
6449 return;
6450
6451 mutex_lock(&priv->mutex);
6452 iwl3945_alive_start(priv);
6453 mutex_unlock(&priv->mutex);
6454 }
6455
6456 static void iwl3945_bg_rf_kill(struct work_struct *work)
6457 {
6458 struct iwl3945_priv *priv = container_of(work, struct iwl3945_priv, rf_kill);
6459
6460 wake_up_interruptible(&priv->wait_command_queue);
6461
6462 if (test_bit(STATUS_EXIT_PENDING, &priv->status))
6463 return;
6464
6465 mutex_lock(&priv->mutex);
6466
6467 if (!iwl3945_is_rfkill(priv)) {
6468 IWL_DEBUG(IWL_DL_INFO | IWL_DL_RF_KILL,
6469 "HW and/or SW RF Kill no longer active, restarting "
6470 "device\n");
6471 if (!test_bit(STATUS_EXIT_PENDING, &priv->status))
6472 queue_work(priv->workqueue, &priv->restart);
6473 } else {
6474
6475 if (!test_bit(STATUS_RF_KILL_HW, &priv->status))
6476 IWL_DEBUG_RF_KILL("Can not turn radio back on - "
6477 "disabled by SW switch\n");
6478 else
6479 IWL_WARNING("Radio Frequency Kill Switch is On:\n"
6480 "Kill switch must be turned off for "
6481 "wireless networking to work.\n");
6482 }
6483 mutex_unlock(&priv->mutex);
6484 }
6485
6486 #define IWL_SCAN_CHECK_WATCHDOG (7 * HZ)
6487
6488 static void iwl3945_bg_scan_check(struct work_struct *data)
6489 {
6490 struct iwl3945_priv *priv =
6491 container_of(data, struct iwl3945_priv, scan_check.work);
6492
6493 if (test_bit(STATUS_EXIT_PENDING, &priv->status))
6494 return;
6495
6496 mutex_lock(&priv->mutex);
6497 if (test_bit(STATUS_SCANNING, &priv->status) ||
6498 test_bit(STATUS_SCAN_ABORTING, &priv->status)) {
6499 IWL_DEBUG(IWL_DL_INFO | IWL_DL_SCAN,
6500 "Scan completion watchdog resetting adapter (%dms)\n",
6501 jiffies_to_msecs(IWL_SCAN_CHECK_WATCHDOG));
6502
6503 if (!test_bit(STATUS_EXIT_PENDING, &priv->status))
6504 iwl3945_send_scan_abort(priv);
6505 }
6506 mutex_unlock(&priv->mutex);
6507 }
6508
6509 static void iwl3945_bg_request_scan(struct work_struct *data)
6510 {
6511 struct iwl3945_priv *priv =
6512 container_of(data, struct iwl3945_priv, request_scan);
6513 struct iwl3945_host_cmd cmd = {
6514 .id = REPLY_SCAN_CMD,
6515 .len = sizeof(struct iwl3945_scan_cmd),
6516 .meta.flags = CMD_SIZE_HUGE,
6517 };
6518 int rc = 0;
6519 struct iwl3945_scan_cmd *scan;
6520 struct ieee80211_conf *conf = NULL;
6521 u8 direct_mask;
6522 int phymode;
6523
6524 conf = ieee80211_get_hw_conf(priv->hw);
6525
6526 mutex_lock(&priv->mutex);
6527
6528 if (!iwl3945_is_ready(priv)) {
6529 IWL_WARNING("request scan called when driver not ready.\n");
6530 goto done;
6531 }
6532
6533 /* Make sure the scan wasn't cancelled before this queued work
6534 * was given the chance to run... */
6535 if (!test_bit(STATUS_SCANNING, &priv->status))
6536 goto done;
6537
6538 /* This should never be called or scheduled if there is currently
6539 * a scan active in the hardware. */
6540 if (test_bit(STATUS_SCAN_HW, &priv->status)) {
6541 IWL_DEBUG_INFO("Multiple concurrent scan requests in parallel. "
6542 "Ignoring second request.\n");
6543 rc = -EIO;
6544 goto done;
6545 }
6546
6547 if (test_bit(STATUS_EXIT_PENDING, &priv->status)) {
6548 IWL_DEBUG_SCAN("Aborting scan due to device shutdown\n");
6549 goto done;
6550 }
6551
6552 if (test_bit(STATUS_SCAN_ABORTING, &priv->status)) {
6553 IWL_DEBUG_HC("Scan request while abort pending. Queuing.\n");
6554 goto done;
6555 }
6556
6557 if (iwl3945_is_rfkill(priv)) {
6558 IWL_DEBUG_HC("Aborting scan due to RF Kill activation\n");
6559 goto done;
6560 }
6561
6562 if (!test_bit(STATUS_READY, &priv->status)) {
6563 IWL_DEBUG_HC("Scan request while uninitialized. Queuing.\n");
6564 goto done;
6565 }
6566
6567 if (!priv->scan_bands) {
6568 IWL_DEBUG_HC("Aborting scan due to no requested bands\n");
6569 goto done;
6570 }
6571
6572 if (!priv->scan) {
6573 priv->scan = kmalloc(sizeof(struct iwl3945_scan_cmd) +
6574 IWL_MAX_SCAN_SIZE, GFP_KERNEL);
6575 if (!priv->scan) {
6576 rc = -ENOMEM;
6577 goto done;
6578 }
6579 }
6580 scan = priv->scan;
6581 memset(scan, 0, sizeof(struct iwl3945_scan_cmd) + IWL_MAX_SCAN_SIZE);
6582
6583 scan->quiet_plcp_th = IWL_PLCP_QUIET_THRESH;
6584 scan->quiet_time = IWL_ACTIVE_QUIET_TIME;
6585
6586 if (iwl3945_is_associated(priv)) {
6587 u16 interval = 0;
6588 u32 extra;
6589 u32 suspend_time = 100;
6590 u32 scan_suspend_time = 100;
6591 unsigned long flags;
6592
6593 IWL_DEBUG_INFO("Scanning while associated...\n");
6594
6595 spin_lock_irqsave(&priv->lock, flags);
6596 interval = priv->beacon_int;
6597 spin_unlock_irqrestore(&priv->lock, flags);
6598
6599 scan->suspend_time = 0;
6600 scan->max_out_time = cpu_to_le32(200 * 1024);
6601 if (!interval)
6602 interval = suspend_time;
6603 /*
6604 * suspend time format:
6605 * 0-19: beacon interval in usec (time before exec.)
6606 * 20-23: 0
6607 * 24-31: number of beacons (suspend between channels)
6608 */
6609
6610 extra = (suspend_time / interval) << 24;
6611 scan_suspend_time = 0xFF0FFFFF &
6612 (extra | ((suspend_time % interval) * 1024));
6613
6614 scan->suspend_time = cpu_to_le32(scan_suspend_time);
6615 IWL_DEBUG_SCAN("suspend_time 0x%X beacon interval %d\n",
6616 scan_suspend_time, interval);
6617 }
6618
6619 /* We should add the ability for user to lock to PASSIVE ONLY */
6620 if (priv->one_direct_scan) {
6621 IWL_DEBUG_SCAN
6622 ("Kicking off one direct scan for '%s'\n",
6623 iwl3945_escape_essid(priv->direct_ssid,
6624 priv->direct_ssid_len));
6625 scan->direct_scan[0].id = WLAN_EID_SSID;
6626 scan->direct_scan[0].len = priv->direct_ssid_len;
6627 memcpy(scan->direct_scan[0].ssid,
6628 priv->direct_ssid, priv->direct_ssid_len);
6629 direct_mask = 1;
6630 } else if (!iwl3945_is_associated(priv) && priv->essid_len) {
6631 scan->direct_scan[0].id = WLAN_EID_SSID;
6632 scan->direct_scan[0].len = priv->essid_len;
6633 memcpy(scan->direct_scan[0].ssid, priv->essid, priv->essid_len);
6634 direct_mask = 1;
6635 } else
6636 direct_mask = 0;
6637
6638 /* We don't build a direct scan probe request; the uCode will do
6639 * that based on the direct_mask added to each channel entry */
6640 scan->tx_cmd.len = cpu_to_le16(
6641 iwl3945_fill_probe_req(priv, (struct ieee80211_mgmt *)scan->data,
6642 IWL_MAX_SCAN_SIZE - sizeof(*scan), 0));
6643 scan->tx_cmd.tx_flags = TX_CMD_FLG_SEQ_CTL_MSK;
6644 scan->tx_cmd.sta_id = priv->hw_setting.bcast_sta_id;
6645 scan->tx_cmd.stop_time.life_time = TX_CMD_LIFE_TIME_INFINITE;
6646
6647 /* flags + rate selection */
6648
6649 switch (priv->scan_bands) {
6650 case 2:
6651 scan->flags = RXON_FLG_BAND_24G_MSK | RXON_FLG_AUTO_DETECT_MSK;
6652 scan->tx_cmd.rate = IWL_RATE_1M_PLCP;
6653 scan->good_CRC_th = 0;
6654 phymode = MODE_IEEE80211G;
6655 break;
6656
6657 case 1:
6658 scan->tx_cmd.rate = IWL_RATE_6M_PLCP;
6659 scan->good_CRC_th = IWL_GOOD_CRC_TH;
6660 phymode = MODE_IEEE80211A;
6661 break;
6662
6663 default:
6664 IWL_WARNING("Invalid scan band count\n");
6665 goto done;
6666 }
6667
6668 /* select Rx antennas */
6669 scan->flags |= iwl3945_get_antenna_flags(priv);
6670
6671 if (priv->iw_mode == IEEE80211_IF_TYPE_MNTR)
6672 scan->filter_flags = RXON_FILTER_PROMISC_MSK;
6673
6674 if (direct_mask)
6675 IWL_DEBUG_SCAN
6676 ("Initiating direct scan for %s.\n",
6677 iwl3945_escape_essid(priv->essid, priv->essid_len));
6678 else
6679 IWL_DEBUG_SCAN("Initiating indirect scan.\n");
6680
6681 scan->channel_count =
6682 iwl3945_get_channels_for_scan(
6683 priv, phymode, 1, /* active */
6684 direct_mask,
6685 (void *)&scan->data[le16_to_cpu(scan->tx_cmd.len)]);
6686
6687 cmd.len += le16_to_cpu(scan->tx_cmd.len) +
6688 scan->channel_count * sizeof(struct iwl3945_scan_channel);
6689 cmd.data = scan;
6690 scan->len = cpu_to_le16(cmd.len);
6691
6692 set_bit(STATUS_SCAN_HW, &priv->status);
6693 rc = iwl3945_send_cmd_sync(priv, &cmd);
6694 if (rc)
6695 goto done;
6696
6697 queue_delayed_work(priv->workqueue, &priv->scan_check,
6698 IWL_SCAN_CHECK_WATCHDOG);
6699
6700 mutex_unlock(&priv->mutex);
6701 return;
6702
6703 done:
6704 /* inform mac80211 scan aborted */
6705 queue_work(priv->workqueue, &priv->scan_completed);
6706 mutex_unlock(&priv->mutex);
6707 }
6708
6709 static void iwl3945_bg_up(struct work_struct *data)
6710 {
6711 struct iwl3945_priv *priv = container_of(data, struct iwl3945_priv, up);
6712
6713 if (test_bit(STATUS_EXIT_PENDING, &priv->status))
6714 return;
6715
6716 mutex_lock(&priv->mutex);
6717 __iwl3945_up(priv);
6718 mutex_unlock(&priv->mutex);
6719 }
6720
6721 static void iwl3945_bg_restart(struct work_struct *data)
6722 {
6723 struct iwl3945_priv *priv = container_of(data, struct iwl3945_priv, restart);
6724
6725 if (test_bit(STATUS_EXIT_PENDING, &priv->status))
6726 return;
6727
6728 iwl3945_down(priv);
6729 queue_work(priv->workqueue, &priv->up);
6730 }
6731
6732 static void iwl3945_bg_rx_replenish(struct work_struct *data)
6733 {
6734 struct iwl3945_priv *priv =
6735 container_of(data, struct iwl3945_priv, rx_replenish);
6736
6737 if (test_bit(STATUS_EXIT_PENDING, &priv->status))
6738 return;
6739
6740 mutex_lock(&priv->mutex);
6741 iwl3945_rx_replenish(priv);
6742 mutex_unlock(&priv->mutex);
6743 }
6744
6745 #define IWL_DELAY_NEXT_SCAN (HZ*2)
6746
6747 static void iwl3945_bg_post_associate(struct work_struct *data)
6748 {
6749 struct iwl3945_priv *priv = container_of(data, struct iwl3945_priv,
6750 post_associate.work);
6751
6752 int rc = 0;
6753 struct ieee80211_conf *conf = NULL;
6754 DECLARE_MAC_BUF(mac);
6755
6756 if (priv->iw_mode == IEEE80211_IF_TYPE_AP) {
6757 IWL_ERROR("%s Should not be called in AP mode\n", __FUNCTION__);
6758 return;
6759 }
6760
6761
6762 IWL_DEBUG_ASSOC("Associated as %d to: %s\n",
6763 priv->assoc_id,
6764 print_mac(mac, priv->active_rxon.bssid_addr));
6765
6766 if (test_bit(STATUS_EXIT_PENDING, &priv->status))
6767 return;
6768
6769 mutex_lock(&priv->mutex);
6770
6771 if (!priv->vif || !priv->is_open) {
6772 mutex_unlock(&priv->mutex);
6773 return;
6774 }
6775 iwl3945_scan_cancel_timeout(priv, 200);
6776
6777 conf = ieee80211_get_hw_conf(priv->hw);
6778
6779 priv->staging_rxon.filter_flags &= ~RXON_FILTER_ASSOC_MSK;
6780 iwl3945_commit_rxon(priv);
6781
6782 memset(&priv->rxon_timing, 0, sizeof(struct iwl3945_rxon_time_cmd));
6783 iwl3945_setup_rxon_timing(priv);
6784 rc = iwl3945_send_cmd_pdu(priv, REPLY_RXON_TIMING,
6785 sizeof(priv->rxon_timing), &priv->rxon_timing);
6786 if (rc)
6787 IWL_WARNING("REPLY_RXON_TIMING failed - "
6788 "Attempting to continue.\n");
6789
6790 priv->staging_rxon.filter_flags |= RXON_FILTER_ASSOC_MSK;
6791
6792 priv->staging_rxon.assoc_id = cpu_to_le16(priv->assoc_id);
6793
6794 IWL_DEBUG_ASSOC("assoc id %d beacon interval %d\n",
6795 priv->assoc_id, priv->beacon_int);
6796
6797 if (priv->assoc_capability & WLAN_CAPABILITY_SHORT_PREAMBLE)
6798 priv->staging_rxon.flags |= RXON_FLG_SHORT_PREAMBLE_MSK;
6799 else
6800 priv->staging_rxon.flags &= ~RXON_FLG_SHORT_PREAMBLE_MSK;
6801
6802 if (priv->staging_rxon.flags & RXON_FLG_BAND_24G_MSK) {
6803 if (priv->assoc_capability & WLAN_CAPABILITY_SHORT_SLOT_TIME)
6804 priv->staging_rxon.flags |= RXON_FLG_SHORT_SLOT_MSK;
6805 else
6806 priv->staging_rxon.flags &= ~RXON_FLG_SHORT_SLOT_MSK;
6807
6808 if (priv->iw_mode == IEEE80211_IF_TYPE_IBSS)
6809 priv->staging_rxon.flags &= ~RXON_FLG_SHORT_SLOT_MSK;
6810
6811 }
6812
6813 iwl3945_commit_rxon(priv);
6814
6815 switch (priv->iw_mode) {
6816 case IEEE80211_IF_TYPE_STA:
6817 iwl3945_rate_scale_init(priv->hw, IWL_AP_ID);
6818 break;
6819
6820 case IEEE80211_IF_TYPE_IBSS:
6821
6822 /* clear out the station table */
6823 iwl3945_clear_stations_table(priv);
6824
6825 iwl3945_add_station(priv, iwl3945_broadcast_addr, 0, 0);
6826 iwl3945_add_station(priv, priv->bssid, 0, 0);
6827 iwl3945_sync_sta(priv, IWL_STA_ID,
6828 (priv->phymode == MODE_IEEE80211A)?
6829 IWL_RATE_6M_PLCP : IWL_RATE_1M_PLCP,
6830 CMD_ASYNC);
6831 iwl3945_rate_scale_init(priv->hw, IWL_STA_ID);
6832 iwl3945_send_beacon_cmd(priv);
6833
6834 break;
6835
6836 default:
6837 IWL_ERROR("%s Should not be called in %d mode\n",
6838 __FUNCTION__, priv->iw_mode);
6839 break;
6840 }
6841
6842 iwl3945_sequence_reset(priv);
6843
6844 #ifdef CONFIG_IWL3945_QOS
6845 iwl3945_activate_qos(priv, 0);
6846 #endif /* CONFIG_IWL3945_QOS */
6847 /* we have just associated, don't start scan too early */
6848 priv->next_scan_jiffies = jiffies + IWL_DELAY_NEXT_SCAN;
6849 mutex_unlock(&priv->mutex);
6850 }
6851
6852 static void iwl3945_bg_abort_scan(struct work_struct *work)
6853 {
6854 struct iwl3945_priv *priv = container_of(work, struct iwl3945_priv, abort_scan);
6855
6856 if (!iwl3945_is_ready(priv))
6857 return;
6858
6859 mutex_lock(&priv->mutex);
6860
6861 set_bit(STATUS_SCAN_ABORTING, &priv->status);
6862 iwl3945_send_scan_abort(priv);
6863
6864 mutex_unlock(&priv->mutex);
6865 }
6866
6867 static int iwl3945_mac_config(struct ieee80211_hw *hw, struct ieee80211_conf *conf);
6868
6869 static void iwl3945_bg_scan_completed(struct work_struct *work)
6870 {
6871 struct iwl3945_priv *priv =
6872 container_of(work, struct iwl3945_priv, scan_completed);
6873
6874 IWL_DEBUG(IWL_DL_INFO | IWL_DL_SCAN, "SCAN complete scan\n");
6875
6876 if (test_bit(STATUS_EXIT_PENDING, &priv->status))
6877 return;
6878
6879 if (test_bit(STATUS_CONF_PENDING, &priv->status))
6880 iwl3945_mac_config(priv->hw, ieee80211_get_hw_conf(priv->hw));
6881
6882 ieee80211_scan_completed(priv->hw);
6883
6884 /* Since setting the TXPOWER may have been deferred while
6885 * performing the scan, fire one off */
6886 mutex_lock(&priv->mutex);
6887 iwl3945_hw_reg_send_txpower(priv);
6888 mutex_unlock(&priv->mutex);
6889 }
6890
6891 /*****************************************************************************
6892 *
6893 * mac80211 entry point functions
6894 *
6895 *****************************************************************************/
6896
6897 #define UCODE_READY_TIMEOUT (2 * HZ)
6898
6899 static int iwl3945_mac_start(struct ieee80211_hw *hw)
6900 {
6901 struct iwl3945_priv *priv = hw->priv;
6902 int ret;
6903
6904 IWL_DEBUG_MAC80211("enter\n");
6905
6906 if (pci_enable_device(priv->pci_dev)) {
6907 IWL_ERROR("Fail to pci_enable_device\n");
6908 return -ENODEV;
6909 }
6910 pci_restore_state(priv->pci_dev);
6911 pci_enable_msi(priv->pci_dev);
6912
6913 ret = request_irq(priv->pci_dev->irq, iwl3945_isr, IRQF_SHARED,
6914 DRV_NAME, priv);
6915 if (ret) {
6916 IWL_ERROR("Error allocating IRQ %d\n", priv->pci_dev->irq);
6917 goto out_disable_msi;
6918 }
6919
6920 /* we should be verifying the device is ready to be opened */
6921 mutex_lock(&priv->mutex);
6922
6923 memset(&priv->staging_rxon, 0, sizeof(struct iwl3945_rxon_cmd));
6924 /* fetch ucode file from disk, alloc and copy to bus-master buffers ...
6925 * ucode filename and max sizes are card-specific. */
6926
6927 if (!priv->ucode_code.len) {
6928 ret = iwl3945_read_ucode(priv);
6929 if (ret) {
6930 IWL_ERROR("Could not read microcode: %d\n", ret);
6931 mutex_unlock(&priv->mutex);
6932 goto out_release_irq;
6933 }
6934 }
6935
6936 ret = __iwl3945_up(priv);
6937
6938 mutex_unlock(&priv->mutex);
6939
6940 if (ret)
6941 goto out_release_irq;
6942
6943 IWL_DEBUG_INFO("Start UP work.\n");
6944
6945 if (test_bit(STATUS_IN_SUSPEND, &priv->status))
6946 return 0;
6947
6948 /* Wait for START_ALIVE from ucode. Otherwise callbacks from
6949 * mac80211 will not be run successfully. */
6950 ret = wait_event_interruptible_timeout(priv->wait_command_queue,
6951 test_bit(STATUS_READY, &priv->status),
6952 UCODE_READY_TIMEOUT);
6953 if (!ret) {
6954 if (!test_bit(STATUS_READY, &priv->status)) {
6955 IWL_ERROR("Wait for START_ALIVE timeout after %dms.\n",
6956 jiffies_to_msecs(UCODE_READY_TIMEOUT));
6957 ret = -ETIMEDOUT;
6958 goto out_release_irq;
6959 }
6960 }
6961
6962 priv->is_open = 1;
6963 IWL_DEBUG_MAC80211("leave\n");
6964 return 0;
6965
6966 out_release_irq:
6967 free_irq(priv->pci_dev->irq, priv);
6968 out_disable_msi:
6969 pci_disable_msi(priv->pci_dev);
6970 pci_disable_device(priv->pci_dev);
6971 priv->is_open = 0;
6972 IWL_DEBUG_MAC80211("leave - failed\n");
6973 return ret;
6974 }
6975
6976 static void iwl3945_mac_stop(struct ieee80211_hw *hw)
6977 {
6978 struct iwl3945_priv *priv = hw->priv;
6979
6980 IWL_DEBUG_MAC80211("enter\n");
6981
6982 if (!priv->is_open) {
6983 IWL_DEBUG_MAC80211("leave - skip\n");
6984 return;
6985 }
6986
6987 priv->is_open = 0;
6988
6989 if (iwl3945_is_ready_rf(priv)) {
6990 /* stop mac, cancel any scan request and clear
6991 * RXON_FILTER_ASSOC_MSK BIT
6992 */
6993 mutex_lock(&priv->mutex);
6994 iwl3945_scan_cancel_timeout(priv, 100);
6995 cancel_delayed_work(&priv->post_associate);
6996 mutex_unlock(&priv->mutex);
6997 }
6998
6999 iwl3945_down(priv);
7000
7001 flush_workqueue(priv->workqueue);
7002 free_irq(priv->pci_dev->irq, priv);
7003 pci_disable_msi(priv->pci_dev);
7004 pci_save_state(priv->pci_dev);
7005 pci_disable_device(priv->pci_dev);
7006
7007 IWL_DEBUG_MAC80211("leave\n");
7008 }
7009
7010 static int iwl3945_mac_tx(struct ieee80211_hw *hw, struct sk_buff *skb,
7011 struct ieee80211_tx_control *ctl)
7012 {
7013 struct iwl3945_priv *priv = hw->priv;
7014
7015 IWL_DEBUG_MAC80211("enter\n");
7016
7017 if (priv->iw_mode == IEEE80211_IF_TYPE_MNTR) {
7018 IWL_DEBUG_MAC80211("leave - monitor\n");
7019 return -1;
7020 }
7021
7022 IWL_DEBUG_TX("dev->xmit(%d bytes) at rate 0x%02x\n", skb->len,
7023 ctl->tx_rate);
7024
7025 if (iwl3945_tx_skb(priv, skb, ctl))
7026 dev_kfree_skb_any(skb);
7027
7028 IWL_DEBUG_MAC80211("leave\n");
7029 return 0;
7030 }
7031
7032 static int iwl3945_mac_add_interface(struct ieee80211_hw *hw,
7033 struct ieee80211_if_init_conf *conf)
7034 {
7035 struct iwl3945_priv *priv = hw->priv;
7036 unsigned long flags;
7037 DECLARE_MAC_BUF(mac);
7038
7039 IWL_DEBUG_MAC80211("enter: type %d\n", conf->type);
7040
7041 if (priv->vif) {
7042 IWL_DEBUG_MAC80211("leave - vif != NULL\n");
7043 return -EOPNOTSUPP;
7044 }
7045
7046 spin_lock_irqsave(&priv->lock, flags);
7047 priv->vif = conf->vif;
7048
7049 spin_unlock_irqrestore(&priv->lock, flags);
7050
7051 mutex_lock(&priv->mutex);
7052
7053 if (conf->mac_addr) {
7054 IWL_DEBUG_MAC80211("Set: %s\n", print_mac(mac, conf->mac_addr));
7055 memcpy(priv->mac_addr, conf->mac_addr, ETH_ALEN);
7056 }
7057
7058 if (iwl3945_is_ready(priv))
7059 iwl3945_set_mode(priv, conf->type);
7060
7061 mutex_unlock(&priv->mutex);
7062
7063 IWL_DEBUG_MAC80211("leave\n");
7064 return 0;
7065 }
7066
7067 /**
7068 * iwl3945_mac_config - mac80211 config callback
7069 *
7070 * We ignore conf->flags & IEEE80211_CONF_SHORT_SLOT_TIME since it seems to
7071 * be set inappropriately and the driver currently sets the hardware up to
7072 * use it whenever needed.
7073 */
7074 static int iwl3945_mac_config(struct ieee80211_hw *hw, struct ieee80211_conf *conf)
7075 {
7076 struct iwl3945_priv *priv = hw->priv;
7077 const struct iwl3945_channel_info *ch_info;
7078 unsigned long flags;
7079 int ret = 0;
7080
7081 mutex_lock(&priv->mutex);
7082 IWL_DEBUG_MAC80211("enter to channel %d\n", conf->channel);
7083
7084 priv->add_radiotap = !!(conf->flags & IEEE80211_CONF_RADIOTAP);
7085
7086 if (!iwl3945_is_ready(priv)) {
7087 IWL_DEBUG_MAC80211("leave - not ready\n");
7088 ret = -EIO;
7089 goto out;
7090 }
7091
7092 if (unlikely(!iwl3945_param_disable_hw_scan &&
7093 test_bit(STATUS_SCANNING, &priv->status))) {
7094 IWL_DEBUG_MAC80211("leave - scanning\n");
7095 set_bit(STATUS_CONF_PENDING, &priv->status);
7096 mutex_unlock(&priv->mutex);
7097 return 0;
7098 }
7099
7100 spin_lock_irqsave(&priv->lock, flags);
7101
7102 ch_info = iwl3945_get_channel_info(priv, conf->phymode, conf->channel);
7103 if (!is_channel_valid(ch_info)) {
7104 IWL_DEBUG_SCAN("Channel %d [%d] is INVALID for this SKU.\n",
7105 conf->channel, conf->phymode);
7106 IWL_DEBUG_MAC80211("leave - invalid channel\n");
7107 spin_unlock_irqrestore(&priv->lock, flags);
7108 ret = -EINVAL;
7109 goto out;
7110 }
7111
7112 iwl3945_set_rxon_channel(priv, conf->phymode, conf->channel);
7113
7114 iwl3945_set_flags_for_phymode(priv, conf->phymode);
7115
7116 /* The list of supported rates and rate mask can be different
7117 * for each phymode; since the phymode may have changed, reset
7118 * the rate mask to what mac80211 lists */
7119 iwl3945_set_rate(priv);
7120
7121 spin_unlock_irqrestore(&priv->lock, flags);
7122
7123 #ifdef IEEE80211_CONF_CHANNEL_SWITCH
7124 if (conf->flags & IEEE80211_CONF_CHANNEL_SWITCH) {
7125 iwl3945_hw_channel_switch(priv, conf->channel);
7126 goto out;
7127 }
7128 #endif
7129
7130 iwl3945_radio_kill_sw(priv, !conf->radio_enabled);
7131
7132 if (!conf->radio_enabled) {
7133 IWL_DEBUG_MAC80211("leave - radio disabled\n");
7134 goto out;
7135 }
7136
7137 if (iwl3945_is_rfkill(priv)) {
7138 IWL_DEBUG_MAC80211("leave - RF kill\n");
7139 ret = -EIO;
7140 goto out;
7141 }
7142
7143 iwl3945_set_rate(priv);
7144
7145 if (memcmp(&priv->active_rxon,
7146 &priv->staging_rxon, sizeof(priv->staging_rxon)))
7147 iwl3945_commit_rxon(priv);
7148 else
7149 IWL_DEBUG_INFO("No re-sending same RXON configuration.\n");
7150
7151 IWL_DEBUG_MAC80211("leave\n");
7152
7153 out:
7154 clear_bit(STATUS_CONF_PENDING, &priv->status);
7155 mutex_unlock(&priv->mutex);
7156 return ret;
7157 }
7158
7159 static void iwl3945_config_ap(struct iwl3945_priv *priv)
7160 {
7161 int rc = 0;
7162
7163 if (test_bit(STATUS_EXIT_PENDING, &priv->status))
7164 return;
7165
7166 /* The following should be done only at AP bring up */
7167 if ((priv->active_rxon.filter_flags & RXON_FILTER_ASSOC_MSK) == 0) {
7168
7169 /* RXON - unassoc (to set timing command) */
7170 priv->staging_rxon.filter_flags &= ~RXON_FILTER_ASSOC_MSK;
7171 iwl3945_commit_rxon(priv);
7172
7173 /* RXON Timing */
7174 memset(&priv->rxon_timing, 0, sizeof(struct iwl3945_rxon_time_cmd));
7175 iwl3945_setup_rxon_timing(priv);
7176 rc = iwl3945_send_cmd_pdu(priv, REPLY_RXON_TIMING,
7177 sizeof(priv->rxon_timing), &priv->rxon_timing);
7178 if (rc)
7179 IWL_WARNING("REPLY_RXON_TIMING failed - "
7180 "Attempting to continue.\n");
7181
7182 /* FIXME: what should be the assoc_id for AP? */
7183 priv->staging_rxon.assoc_id = cpu_to_le16(priv->assoc_id);
7184 if (priv->assoc_capability & WLAN_CAPABILITY_SHORT_PREAMBLE)
7185 priv->staging_rxon.flags |=
7186 RXON_FLG_SHORT_PREAMBLE_MSK;
7187 else
7188 priv->staging_rxon.flags &=
7189 ~RXON_FLG_SHORT_PREAMBLE_MSK;
7190
7191 if (priv->staging_rxon.flags & RXON_FLG_BAND_24G_MSK) {
7192 if (priv->assoc_capability &
7193 WLAN_CAPABILITY_SHORT_SLOT_TIME)
7194 priv->staging_rxon.flags |=
7195 RXON_FLG_SHORT_SLOT_MSK;
7196 else
7197 priv->staging_rxon.flags &=
7198 ~RXON_FLG_SHORT_SLOT_MSK;
7199
7200 if (priv->iw_mode == IEEE80211_IF_TYPE_IBSS)
7201 priv->staging_rxon.flags &=
7202 ~RXON_FLG_SHORT_SLOT_MSK;
7203 }
7204 /* restore RXON assoc */
7205 priv->staging_rxon.filter_flags |= RXON_FILTER_ASSOC_MSK;
7206 iwl3945_commit_rxon(priv);
7207 iwl3945_add_station(priv, iwl3945_broadcast_addr, 0, 0);
7208 }
7209 iwl3945_send_beacon_cmd(priv);
7210
7211 /* FIXME - we need to add code here to detect a totally new
7212 * configuration, reset the AP, unassoc, rxon timing, assoc,
7213 * clear sta table, add BCAST sta... */
7214 }
7215
7216 static int iwl3945_mac_config_interface(struct ieee80211_hw *hw,
7217 struct ieee80211_vif *vif,
7218 struct ieee80211_if_conf *conf)
7219 {
7220 struct iwl3945_priv *priv = hw->priv;
7221 DECLARE_MAC_BUF(mac);
7222 unsigned long flags;
7223 int rc;
7224
7225 if (conf == NULL)
7226 return -EIO;
7227
7228 /* XXX: this MUST use conf->mac_addr */
7229
7230 if ((priv->iw_mode == IEEE80211_IF_TYPE_AP) &&
7231 (!conf->beacon || !conf->ssid_len)) {
7232 IWL_DEBUG_MAC80211
7233 ("Leaving in AP mode because HostAPD is not ready.\n");
7234 return 0;
7235 }
7236
7237 if (!iwl3945_is_alive(priv))
7238 return -EAGAIN;
7239
7240 mutex_lock(&priv->mutex);
7241
7242 if (conf->bssid)
7243 IWL_DEBUG_MAC80211("bssid: %s\n",
7244 print_mac(mac, conf->bssid));
7245
7246 /*
7247 * very dubious code was here; the probe filtering flag is never set:
7248 *
7249 if (unlikely(test_bit(STATUS_SCANNING, &priv->status)) &&
7250 !(priv->hw->flags & IEEE80211_HW_NO_PROBE_FILTERING)) {
7251 */
7252 if (unlikely(test_bit(STATUS_SCANNING, &priv->status))) {
7253 IWL_DEBUG_MAC80211("leave - scanning\n");
7254 mutex_unlock(&priv->mutex);
7255 return 0;
7256 }
7257
7258 if (priv->vif != vif) {
7259 IWL_DEBUG_MAC80211("leave - priv->vif != vif\n");
7260 mutex_unlock(&priv->mutex);
7261 return 0;
7262 }
7263
7264 if (priv->iw_mode == IEEE80211_IF_TYPE_AP) {
7265 if (!conf->bssid) {
7266 conf->bssid = priv->mac_addr;
7267 memcpy(priv->bssid, priv->mac_addr, ETH_ALEN);
7268 IWL_DEBUG_MAC80211("bssid was set to: %s\n",
7269 print_mac(mac, conf->bssid));
7270 }
7271 if (priv->ibss_beacon)
7272 dev_kfree_skb(priv->ibss_beacon);
7273
7274 priv->ibss_beacon = conf->beacon;
7275 }
7276
7277 if (iwl3945_is_rfkill(priv))
7278 goto done;
7279
7280 if (conf->bssid && !is_zero_ether_addr(conf->bssid) &&
7281 !is_multicast_ether_addr(conf->bssid)) {
7282 /* If there is currently a HW scan going on in the background
7283 * then we need to cancel it else the RXON below will fail. */
7284 if (iwl3945_scan_cancel_timeout(priv, 100)) {
7285 IWL_WARNING("Aborted scan still in progress "
7286 "after 100ms\n");
7287 IWL_DEBUG_MAC80211("leaving - scan abort failed.\n");
7288 mutex_unlock(&priv->mutex);
7289 return -EAGAIN;
7290 }
7291 memcpy(priv->staging_rxon.bssid_addr, conf->bssid, ETH_ALEN);
7292
7293 /* TODO: Audit driver for usage of these members and see
7294 * if mac80211 deprecates them (priv->bssid looks like it
7295 * shouldn't be there, but I haven't scanned the IBSS code
7296 * to verify) - jpk */
7297 memcpy(priv->bssid, conf->bssid, ETH_ALEN);
7298
7299 if (priv->iw_mode == IEEE80211_IF_TYPE_AP)
7300 iwl3945_config_ap(priv);
7301 else {
7302 rc = iwl3945_commit_rxon(priv);
7303 if ((priv->iw_mode == IEEE80211_IF_TYPE_STA) && rc)
7304 iwl3945_add_station(priv,
7305 priv->active_rxon.bssid_addr, 1, 0);
7306 }
7307
7308 } else {
7309 iwl3945_scan_cancel_timeout(priv, 100);
7310 priv->staging_rxon.filter_flags &= ~RXON_FILTER_ASSOC_MSK;
7311 iwl3945_commit_rxon(priv);
7312 }
7313
7314 done:
7315 spin_lock_irqsave(&priv->lock, flags);
7316 if (!conf->ssid_len)
7317 memset(priv->essid, 0, IW_ESSID_MAX_SIZE);
7318 else
7319 memcpy(priv->essid, conf->ssid, conf->ssid_len);
7320
7321 priv->essid_len = conf->ssid_len;
7322 spin_unlock_irqrestore(&priv->lock, flags);
7323
7324 IWL_DEBUG_MAC80211("leave\n");
7325 mutex_unlock(&priv->mutex);
7326
7327 return 0;
7328 }
7329
7330 static void iwl3945_configure_filter(struct ieee80211_hw *hw,
7331 unsigned int changed_flags,
7332 unsigned int *total_flags,
7333 int mc_count, struct dev_addr_list *mc_list)
7334 {
7335 /*
7336 * XXX: dummy
7337 * see also iwl3945_connection_init_rx_config
7338 */
7339 *total_flags = 0;
7340 }
7341
7342 static void iwl3945_mac_remove_interface(struct ieee80211_hw *hw,
7343 struct ieee80211_if_init_conf *conf)
7344 {
7345 struct iwl3945_priv *priv = hw->priv;
7346
7347 IWL_DEBUG_MAC80211("enter\n");
7348
7349 mutex_lock(&priv->mutex);
7350
7351 if (iwl3945_is_ready_rf(priv)) {
7352 iwl3945_scan_cancel_timeout(priv, 100);
7353 cancel_delayed_work(&priv->post_associate);
7354 priv->staging_rxon.filter_flags &= ~RXON_FILTER_ASSOC_MSK;
7355 iwl3945_commit_rxon(priv);
7356 }
7357 if (priv->vif == conf->vif) {
7358 priv->vif = NULL;
7359 memset(priv->bssid, 0, ETH_ALEN);
7360 memset(priv->essid, 0, IW_ESSID_MAX_SIZE);
7361 priv->essid_len = 0;
7362 }
7363 mutex_unlock(&priv->mutex);
7364
7365 IWL_DEBUG_MAC80211("leave\n");
7366 }
7367
7368 static int iwl3945_mac_hw_scan(struct ieee80211_hw *hw, u8 *ssid, size_t len)
7369 {
7370 int rc = 0;
7371 unsigned long flags;
7372 struct iwl3945_priv *priv = hw->priv;
7373
7374 IWL_DEBUG_MAC80211("enter\n");
7375
7376 mutex_lock(&priv->mutex);
7377 spin_lock_irqsave(&priv->lock, flags);
7378
7379 if (!iwl3945_is_ready_rf(priv)) {
7380 rc = -EIO;
7381 IWL_DEBUG_MAC80211("leave - not ready or exit pending\n");
7382 goto out_unlock;
7383 }
7384
7385 if (priv->iw_mode == IEEE80211_IF_TYPE_AP) { /* APs don't scan */
7386 rc = -EIO;
7387 IWL_ERROR("ERROR: APs don't scan\n");
7388 goto out_unlock;
7389 }
7390
7391 /* we don't schedule scan within next_scan_jiffies period */
7392 if (priv->next_scan_jiffies &&
7393 time_after(priv->next_scan_jiffies, jiffies)) {
7394 rc = -EAGAIN;
7395 goto out_unlock;
7396 }
7397 /* if we just finished scan ask for delay */
7398 if (priv->last_scan_jiffies && time_after(priv->last_scan_jiffies +
7399 IWL_DELAY_NEXT_SCAN, jiffies)) {
7400 rc = -EAGAIN;
7401 goto out_unlock;
7402 }
7403 if (len) {
7404 IWL_DEBUG_SCAN("direct scan for %s [%d]\n ",
7405 iwl3945_escape_essid(ssid, len), (int)len);
7406
7407 priv->one_direct_scan = 1;
7408 priv->direct_ssid_len = (u8)
7409 min((u8) len, (u8) IW_ESSID_MAX_SIZE);
7410 memcpy(priv->direct_ssid, ssid, priv->direct_ssid_len);
7411 } else
7412 priv->one_direct_scan = 0;
7413
7414 rc = iwl3945_scan_initiate(priv);
7415
7416 IWL_DEBUG_MAC80211("leave\n");
7417
7418 out_unlock:
7419 spin_unlock_irqrestore(&priv->lock, flags);
7420 mutex_unlock(&priv->mutex);
7421
7422 return rc;
7423 }
7424
7425 static int iwl3945_mac_set_key(struct ieee80211_hw *hw, enum set_key_cmd cmd,
7426 const u8 *local_addr, const u8 *addr,
7427 struct ieee80211_key_conf *key)
7428 {
7429 struct iwl3945_priv *priv = hw->priv;
7430 int rc = 0;
7431 u8 sta_id;
7432
7433 IWL_DEBUG_MAC80211("enter\n");
7434
7435 if (!iwl3945_param_hwcrypto) {
7436 IWL_DEBUG_MAC80211("leave - hwcrypto disabled\n");
7437 return -EOPNOTSUPP;
7438 }
7439
7440 if (is_zero_ether_addr(addr))
7441 /* only support pairwise keys */
7442 return -EOPNOTSUPP;
7443
7444 sta_id = iwl3945_hw_find_station(priv, addr);
7445 if (sta_id == IWL_INVALID_STATION) {
7446 DECLARE_MAC_BUF(mac);
7447
7448 IWL_DEBUG_MAC80211("leave - %s not in station map.\n",
7449 print_mac(mac, addr));
7450 return -EINVAL;
7451 }
7452
7453 mutex_lock(&priv->mutex);
7454
7455 iwl3945_scan_cancel_timeout(priv, 100);
7456
7457 switch (cmd) {
7458 case SET_KEY:
7459 rc = iwl3945_update_sta_key_info(priv, key, sta_id);
7460 if (!rc) {
7461 iwl3945_set_rxon_hwcrypto(priv, 1);
7462 iwl3945_commit_rxon(priv);
7463 key->hw_key_idx = sta_id;
7464 IWL_DEBUG_MAC80211("set_key success, using hwcrypto\n");
7465 key->flags |= IEEE80211_KEY_FLAG_GENERATE_IV;
7466 }
7467 break;
7468 case DISABLE_KEY:
7469 rc = iwl3945_clear_sta_key_info(priv, sta_id);
7470 if (!rc) {
7471 iwl3945_set_rxon_hwcrypto(priv, 0);
7472 iwl3945_commit_rxon(priv);
7473 IWL_DEBUG_MAC80211("disable hwcrypto key\n");
7474 }
7475 break;
7476 default:
7477 rc = -EINVAL;
7478 }
7479
7480 IWL_DEBUG_MAC80211("leave\n");
7481 mutex_unlock(&priv->mutex);
7482
7483 return rc;
7484 }
7485
7486 static int iwl3945_mac_conf_tx(struct ieee80211_hw *hw, int queue,
7487 const struct ieee80211_tx_queue_params *params)
7488 {
7489 struct iwl3945_priv *priv = hw->priv;
7490 #ifdef CONFIG_IWL3945_QOS
7491 unsigned long flags;
7492 int q;
7493 #endif /* CONFIG_IWL3945_QOS */
7494
7495 IWL_DEBUG_MAC80211("enter\n");
7496
7497 if (!iwl3945_is_ready_rf(priv)) {
7498 IWL_DEBUG_MAC80211("leave - RF not ready\n");
7499 return -EIO;
7500 }
7501
7502 if (queue >= AC_NUM) {
7503 IWL_DEBUG_MAC80211("leave - queue >= AC_NUM %d\n", queue);
7504 return 0;
7505 }
7506
7507 #ifdef CONFIG_IWL3945_QOS
7508 if (!priv->qos_data.qos_enable) {
7509 priv->qos_data.qos_active = 0;
7510 IWL_DEBUG_MAC80211("leave - qos not enabled\n");
7511 return 0;
7512 }
7513 q = AC_NUM - 1 - queue;
7514
7515 spin_lock_irqsave(&priv->lock, flags);
7516
7517 priv->qos_data.def_qos_parm.ac[q].cw_min = cpu_to_le16(params->cw_min);
7518 priv->qos_data.def_qos_parm.ac[q].cw_max = cpu_to_le16(params->cw_max);
7519 priv->qos_data.def_qos_parm.ac[q].aifsn = params->aifs;
7520 priv->qos_data.def_qos_parm.ac[q].edca_txop =
7521 cpu_to_le16((params->burst_time * 100));
7522
7523 priv->qos_data.def_qos_parm.ac[q].reserved1 = 0;
7524 priv->qos_data.qos_active = 1;
7525
7526 spin_unlock_irqrestore(&priv->lock, flags);
7527
7528 mutex_lock(&priv->mutex);
7529 if (priv->iw_mode == IEEE80211_IF_TYPE_AP)
7530 iwl3945_activate_qos(priv, 1);
7531 else if (priv->assoc_id && iwl3945_is_associated(priv))
7532 iwl3945_activate_qos(priv, 0);
7533
7534 mutex_unlock(&priv->mutex);
7535
7536 #endif /*CONFIG_IWL3945_QOS */
7537
7538 IWL_DEBUG_MAC80211("leave\n");
7539 return 0;
7540 }
7541
7542 static int iwl3945_mac_get_tx_stats(struct ieee80211_hw *hw,
7543 struct ieee80211_tx_queue_stats *stats)
7544 {
7545 struct iwl3945_priv *priv = hw->priv;
7546 int i, avail;
7547 struct iwl3945_tx_queue *txq;
7548 struct iwl3945_queue *q;
7549 unsigned long flags;
7550
7551 IWL_DEBUG_MAC80211("enter\n");
7552
7553 if (!iwl3945_is_ready_rf(priv)) {
7554 IWL_DEBUG_MAC80211("leave - RF not ready\n");
7555 return -EIO;
7556 }
7557
7558 spin_lock_irqsave(&priv->lock, flags);
7559
7560 for (i = 0; i < AC_NUM; i++) {
7561 txq = &priv->txq[i];
7562 q = &txq->q;
7563 avail = iwl3945_queue_space(q);
7564
7565 stats->data[i].len = q->n_window - avail;
7566 stats->data[i].limit = q->n_window - q->high_mark;
7567 stats->data[i].count = q->n_window;
7568
7569 }
7570 spin_unlock_irqrestore(&priv->lock, flags);
7571
7572 IWL_DEBUG_MAC80211("leave\n");
7573
7574 return 0;
7575 }
7576
7577 static int iwl3945_mac_get_stats(struct ieee80211_hw *hw,
7578 struct ieee80211_low_level_stats *stats)
7579 {
7580 IWL_DEBUG_MAC80211("enter\n");
7581 IWL_DEBUG_MAC80211("leave\n");
7582
7583 return 0;
7584 }
7585
7586 static u64 iwl3945_mac_get_tsf(struct ieee80211_hw *hw)
7587 {
7588 IWL_DEBUG_MAC80211("enter\n");
7589 IWL_DEBUG_MAC80211("leave\n");
7590
7591 return 0;
7592 }
7593
7594 static void iwl3945_mac_reset_tsf(struct ieee80211_hw *hw)
7595 {
7596 struct iwl3945_priv *priv = hw->priv;
7597 unsigned long flags;
7598
7599 mutex_lock(&priv->mutex);
7600 IWL_DEBUG_MAC80211("enter\n");
7601
7602 #ifdef CONFIG_IWL3945_QOS
7603 iwl3945_reset_qos(priv);
7604 #endif
7605 cancel_delayed_work(&priv->post_associate);
7606
7607 spin_lock_irqsave(&priv->lock, flags);
7608 priv->assoc_id = 0;
7609 priv->assoc_capability = 0;
7610 priv->call_post_assoc_from_beacon = 0;
7611
7612 /* new association get rid of ibss beacon skb */
7613 if (priv->ibss_beacon)
7614 dev_kfree_skb(priv->ibss_beacon);
7615
7616 priv->ibss_beacon = NULL;
7617
7618 priv->beacon_int = priv->hw->conf.beacon_int;
7619 priv->timestamp1 = 0;
7620 priv->timestamp0 = 0;
7621 if ((priv->iw_mode == IEEE80211_IF_TYPE_STA))
7622 priv->beacon_int = 0;
7623
7624 spin_unlock_irqrestore(&priv->lock, flags);
7625
7626 if (!iwl3945_is_ready_rf(priv)) {
7627 IWL_DEBUG_MAC80211("leave - not ready\n");
7628 mutex_unlock(&priv->mutex);
7629 return;
7630 }
7631
7632 /* we are restarting association process
7633 * clear RXON_FILTER_ASSOC_MSK bit
7634 */
7635 if (priv->iw_mode != IEEE80211_IF_TYPE_AP) {
7636 iwl3945_scan_cancel_timeout(priv, 100);
7637 priv->staging_rxon.filter_flags &= ~RXON_FILTER_ASSOC_MSK;
7638 iwl3945_commit_rxon(priv);
7639 }
7640
7641 /* Per mac80211.h: This is only used in IBSS mode... */
7642 if (priv->iw_mode != IEEE80211_IF_TYPE_IBSS) {
7643
7644 IWL_DEBUG_MAC80211("leave - not in IBSS\n");
7645 mutex_unlock(&priv->mutex);
7646 return;
7647 }
7648
7649 priv->only_active_channel = 0;
7650
7651 iwl3945_set_rate(priv);
7652
7653 mutex_unlock(&priv->mutex);
7654
7655 IWL_DEBUG_MAC80211("leave\n");
7656
7657 }
7658
7659 static int iwl3945_mac_beacon_update(struct ieee80211_hw *hw, struct sk_buff *skb,
7660 struct ieee80211_tx_control *control)
7661 {
7662 struct iwl3945_priv *priv = hw->priv;
7663 unsigned long flags;
7664
7665 mutex_lock(&priv->mutex);
7666 IWL_DEBUG_MAC80211("enter\n");
7667
7668 if (!iwl3945_is_ready_rf(priv)) {
7669 IWL_DEBUG_MAC80211("leave - RF not ready\n");
7670 mutex_unlock(&priv->mutex);
7671 return -EIO;
7672 }
7673
7674 if (priv->iw_mode != IEEE80211_IF_TYPE_IBSS) {
7675 IWL_DEBUG_MAC80211("leave - not IBSS\n");
7676 mutex_unlock(&priv->mutex);
7677 return -EIO;
7678 }
7679
7680 spin_lock_irqsave(&priv->lock, flags);
7681
7682 if (priv->ibss_beacon)
7683 dev_kfree_skb(priv->ibss_beacon);
7684
7685 priv->ibss_beacon = skb;
7686
7687 priv->assoc_id = 0;
7688
7689 IWL_DEBUG_MAC80211("leave\n");
7690 spin_unlock_irqrestore(&priv->lock, flags);
7691
7692 #ifdef CONFIG_IWL3945_QOS
7693 iwl3945_reset_qos(priv);
7694 #endif
7695
7696 queue_work(priv->workqueue, &priv->post_associate.work);
7697
7698 mutex_unlock(&priv->mutex);
7699
7700 return 0;
7701 }
7702
7703 /*****************************************************************************
7704 *
7705 * sysfs attributes
7706 *
7707 *****************************************************************************/
7708
7709 #ifdef CONFIG_IWL3945_DEBUG
7710
7711 /*
7712 * The following adds a new attribute to the sysfs representation
7713 * of this device driver (i.e. a new file in /sys/bus/pci/drivers/iwl/)
7714 * used for controlling the debug level.
7715 *
7716 * See the level definitions in iwl for details.
7717 */
7718
7719 static ssize_t show_debug_level(struct device_driver *d, char *buf)
7720 {
7721 return sprintf(buf, "0x%08X\n", iwl3945_debug_level);
7722 }
7723 static ssize_t store_debug_level(struct device_driver *d,
7724 const char *buf, size_t count)
7725 {
7726 char *p = (char *)buf;
7727 u32 val;
7728
7729 val = simple_strtoul(p, &p, 0);
7730 if (p == buf)
7731 printk(KERN_INFO DRV_NAME
7732 ": %s is not in hex or decimal form.\n", buf);
7733 else
7734 iwl3945_debug_level = val;
7735
7736 return strnlen(buf, count);
7737 }
7738
7739 static DRIVER_ATTR(debug_level, S_IWUSR | S_IRUGO,
7740 show_debug_level, store_debug_level);
7741
7742 #endif /* CONFIG_IWL3945_DEBUG */
7743
7744 static ssize_t show_rf_kill(struct device *d,
7745 struct device_attribute *attr, char *buf)
7746 {
7747 /*
7748 * 0 - RF kill not enabled
7749 * 1 - SW based RF kill active (sysfs)
7750 * 2 - HW based RF kill active
7751 * 3 - Both HW and SW based RF kill active
7752 */
7753 struct iwl3945_priv *priv = (struct iwl3945_priv *)d->driver_data;
7754 int val = (test_bit(STATUS_RF_KILL_SW, &priv->status) ? 0x1 : 0x0) |
7755 (test_bit(STATUS_RF_KILL_HW, &priv->status) ? 0x2 : 0x0);
7756
7757 return sprintf(buf, "%i\n", val);
7758 }
7759
7760 static ssize_t store_rf_kill(struct device *d,
7761 struct device_attribute *attr,
7762 const char *buf, size_t count)
7763 {
7764 struct iwl3945_priv *priv = (struct iwl3945_priv *)d->driver_data;
7765
7766 mutex_lock(&priv->mutex);
7767 iwl3945_radio_kill_sw(priv, buf[0] == '1');
7768 mutex_unlock(&priv->mutex);
7769
7770 return count;
7771 }
7772
7773 static DEVICE_ATTR(rf_kill, S_IWUSR | S_IRUGO, show_rf_kill, store_rf_kill);
7774
7775 static ssize_t show_temperature(struct device *d,
7776 struct device_attribute *attr, char *buf)
7777 {
7778 struct iwl3945_priv *priv = (struct iwl3945_priv *)d->driver_data;
7779
7780 if (!iwl3945_is_alive(priv))
7781 return -EAGAIN;
7782
7783 return sprintf(buf, "%d\n", iwl3945_hw_get_temperature(priv));
7784 }
7785
7786 static DEVICE_ATTR(temperature, S_IRUGO, show_temperature, NULL);
7787
7788 static ssize_t show_rs_window(struct device *d,
7789 struct device_attribute *attr,
7790 char *buf)
7791 {
7792 struct iwl3945_priv *priv = d->driver_data;
7793 return iwl3945_fill_rs_info(priv->hw, buf, IWL_AP_ID);
7794 }
7795 static DEVICE_ATTR(rs_window, S_IRUGO, show_rs_window, NULL);
7796
7797 static ssize_t show_tx_power(struct device *d,
7798 struct device_attribute *attr, char *buf)
7799 {
7800 struct iwl3945_priv *priv = (struct iwl3945_priv *)d->driver_data;
7801 return sprintf(buf, "%d\n", priv->user_txpower_limit);
7802 }
7803
7804 static ssize_t store_tx_power(struct device *d,
7805 struct device_attribute *attr,
7806 const char *buf, size_t count)
7807 {
7808 struct iwl3945_priv *priv = (struct iwl3945_priv *)d->driver_data;
7809 char *p = (char *)buf;
7810 u32 val;
7811
7812 val = simple_strtoul(p, &p, 10);
7813 if (p == buf)
7814 printk(KERN_INFO DRV_NAME
7815 ": %s is not in decimal form.\n", buf);
7816 else
7817 iwl3945_hw_reg_set_txpower(priv, val);
7818
7819 return count;
7820 }
7821
7822 static DEVICE_ATTR(tx_power, S_IWUSR | S_IRUGO, show_tx_power, store_tx_power);
7823
7824 static ssize_t show_flags(struct device *d,
7825 struct device_attribute *attr, char *buf)
7826 {
7827 struct iwl3945_priv *priv = (struct iwl3945_priv *)d->driver_data;
7828
7829 return sprintf(buf, "0x%04X\n", priv->active_rxon.flags);
7830 }
7831
7832 static ssize_t store_flags(struct device *d,
7833 struct device_attribute *attr,
7834 const char *buf, size_t count)
7835 {
7836 struct iwl3945_priv *priv = (struct iwl3945_priv *)d->driver_data;
7837 u32 flags = simple_strtoul(buf, NULL, 0);
7838
7839 mutex_lock(&priv->mutex);
7840 if (le32_to_cpu(priv->staging_rxon.flags) != flags) {
7841 /* Cancel any currently running scans... */
7842 if (iwl3945_scan_cancel_timeout(priv, 100))
7843 IWL_WARNING("Could not cancel scan.\n");
7844 else {
7845 IWL_DEBUG_INFO("Committing rxon.flags = 0x%04X\n",
7846 flags);
7847 priv->staging_rxon.flags = cpu_to_le32(flags);
7848 iwl3945_commit_rxon(priv);
7849 }
7850 }
7851 mutex_unlock(&priv->mutex);
7852
7853 return count;
7854 }
7855
7856 static DEVICE_ATTR(flags, S_IWUSR | S_IRUGO, show_flags, store_flags);
7857
7858 static ssize_t show_filter_flags(struct device *d,
7859 struct device_attribute *attr, char *buf)
7860 {
7861 struct iwl3945_priv *priv = (struct iwl3945_priv *)d->driver_data;
7862
7863 return sprintf(buf, "0x%04X\n",
7864 le32_to_cpu(priv->active_rxon.filter_flags));
7865 }
7866
7867 static ssize_t store_filter_flags(struct device *d,
7868 struct device_attribute *attr,
7869 const char *buf, size_t count)
7870 {
7871 struct iwl3945_priv *priv = (struct iwl3945_priv *)d->driver_data;
7872 u32 filter_flags = simple_strtoul(buf, NULL, 0);
7873
7874 mutex_lock(&priv->mutex);
7875 if (le32_to_cpu(priv->staging_rxon.filter_flags) != filter_flags) {
7876 /* Cancel any currently running scans... */
7877 if (iwl3945_scan_cancel_timeout(priv, 100))
7878 IWL_WARNING("Could not cancel scan.\n");
7879 else {
7880 IWL_DEBUG_INFO("Committing rxon.filter_flags = "
7881 "0x%04X\n", filter_flags);
7882 priv->staging_rxon.filter_flags =
7883 cpu_to_le32(filter_flags);
7884 iwl3945_commit_rxon(priv);
7885 }
7886 }
7887 mutex_unlock(&priv->mutex);
7888
7889 return count;
7890 }
7891
7892 static DEVICE_ATTR(filter_flags, S_IWUSR | S_IRUGO, show_filter_flags,
7893 store_filter_flags);
7894
7895 static ssize_t show_tune(struct device *d,
7896 struct device_attribute *attr, char *buf)
7897 {
7898 struct iwl3945_priv *priv = (struct iwl3945_priv *)d->driver_data;
7899
7900 return sprintf(buf, "0x%04X\n",
7901 (priv->phymode << 8) |
7902 le16_to_cpu(priv->active_rxon.channel));
7903 }
7904
7905 static void iwl3945_set_flags_for_phymode(struct iwl3945_priv *priv, u8 phymode);
7906
7907 static ssize_t store_tune(struct device *d,
7908 struct device_attribute *attr,
7909 const char *buf, size_t count)
7910 {
7911 struct iwl3945_priv *priv = (struct iwl3945_priv *)d->driver_data;
7912 char *p = (char *)buf;
7913 u16 tune = simple_strtoul(p, &p, 0);
7914 u8 phymode = (tune >> 8) & 0xff;
7915 u16 channel = tune & 0xff;
7916
7917 IWL_DEBUG_INFO("Tune request to:%d channel:%d\n", phymode, channel);
7918
7919 mutex_lock(&priv->mutex);
7920 if ((le16_to_cpu(priv->staging_rxon.channel) != channel) ||
7921 (priv->phymode != phymode)) {
7922 const struct iwl3945_channel_info *ch_info;
7923
7924 ch_info = iwl3945_get_channel_info(priv, phymode, channel);
7925 if (!ch_info) {
7926 IWL_WARNING("Requested invalid phymode/channel "
7927 "combination: %d %d\n", phymode, channel);
7928 mutex_unlock(&priv->mutex);
7929 return -EINVAL;
7930 }
7931
7932 /* Cancel any currently running scans... */
7933 if (iwl3945_scan_cancel_timeout(priv, 100))
7934 IWL_WARNING("Could not cancel scan.\n");
7935 else {
7936 IWL_DEBUG_INFO("Committing phymode and "
7937 "rxon.channel = %d %d\n",
7938 phymode, channel);
7939
7940 iwl3945_set_rxon_channel(priv, phymode, channel);
7941 iwl3945_set_flags_for_phymode(priv, phymode);
7942
7943 iwl3945_set_rate(priv);
7944 iwl3945_commit_rxon(priv);
7945 }
7946 }
7947 mutex_unlock(&priv->mutex);
7948
7949 return count;
7950 }
7951
7952 static DEVICE_ATTR(tune, S_IWUSR | S_IRUGO, show_tune, store_tune);
7953
7954 #ifdef CONFIG_IWL3945_SPECTRUM_MEASUREMENT
7955
7956 static ssize_t show_measurement(struct device *d,
7957 struct device_attribute *attr, char *buf)
7958 {
7959 struct iwl3945_priv *priv = dev_get_drvdata(d);
7960 struct iwl3945_spectrum_notification measure_report;
7961 u32 size = sizeof(measure_report), len = 0, ofs = 0;
7962 u8 *data = (u8 *) & measure_report;
7963 unsigned long flags;
7964
7965 spin_lock_irqsave(&priv->lock, flags);
7966 if (!(priv->measurement_status & MEASUREMENT_READY)) {
7967 spin_unlock_irqrestore(&priv->lock, flags);
7968 return 0;
7969 }
7970 memcpy(&measure_report, &priv->measure_report, size);
7971 priv->measurement_status = 0;
7972 spin_unlock_irqrestore(&priv->lock, flags);
7973
7974 while (size && (PAGE_SIZE - len)) {
7975 hex_dump_to_buffer(data + ofs, size, 16, 1, buf + len,
7976 PAGE_SIZE - len, 1);
7977 len = strlen(buf);
7978 if (PAGE_SIZE - len)
7979 buf[len++] = '\n';
7980
7981 ofs += 16;
7982 size -= min(size, 16U);
7983 }
7984
7985 return len;
7986 }
7987
7988 static ssize_t store_measurement(struct device *d,
7989 struct device_attribute *attr,
7990 const char *buf, size_t count)
7991 {
7992 struct iwl3945_priv *priv = dev_get_drvdata(d);
7993 struct ieee80211_measurement_params params = {
7994 .channel = le16_to_cpu(priv->active_rxon.channel),
7995 .start_time = cpu_to_le64(priv->last_tsf),
7996 .duration = cpu_to_le16(1),
7997 };
7998 u8 type = IWL_MEASURE_BASIC;
7999 u8 buffer[32];
8000 u8 channel;
8001
8002 if (count) {
8003 char *p = buffer;
8004 strncpy(buffer, buf, min(sizeof(buffer), count));
8005 channel = simple_strtoul(p, NULL, 0);
8006 if (channel)
8007 params.channel = channel;
8008
8009 p = buffer;
8010 while (*p && *p != ' ')
8011 p++;
8012 if (*p)
8013 type = simple_strtoul(p + 1, NULL, 0);
8014 }
8015
8016 IWL_DEBUG_INFO("Invoking measurement of type %d on "
8017 "channel %d (for '%s')\n", type, params.channel, buf);
8018 iwl3945_get_measurement(priv, &params, type);
8019
8020 return count;
8021 }
8022
8023 static DEVICE_ATTR(measurement, S_IRUSR | S_IWUSR,
8024 show_measurement, store_measurement);
8025 #endif /* CONFIG_IWL3945_SPECTRUM_MEASUREMENT */
8026
8027 static ssize_t show_rate(struct device *d,
8028 struct device_attribute *attr, char *buf)
8029 {
8030 struct iwl3945_priv *priv = dev_get_drvdata(d);
8031 unsigned long flags;
8032 int i;
8033
8034 spin_lock_irqsave(&priv->sta_lock, flags);
8035 if (priv->iw_mode == IEEE80211_IF_TYPE_STA)
8036 i = priv->stations[IWL_AP_ID].current_rate.s.rate;
8037 else
8038 i = priv->stations[IWL_STA_ID].current_rate.s.rate;
8039 spin_unlock_irqrestore(&priv->sta_lock, flags);
8040
8041 i = iwl3945_rate_index_from_plcp(i);
8042 if (i == -1)
8043 return sprintf(buf, "0\n");
8044
8045 return sprintf(buf, "%d%s\n",
8046 (iwl3945_rates[i].ieee >> 1),
8047 (iwl3945_rates[i].ieee & 0x1) ? ".5" : "");
8048 }
8049
8050 static DEVICE_ATTR(rate, S_IRUSR, show_rate, NULL);
8051
8052 static ssize_t store_retry_rate(struct device *d,
8053 struct device_attribute *attr,
8054 const char *buf, size_t count)
8055 {
8056 struct iwl3945_priv *priv = dev_get_drvdata(d);
8057
8058 priv->retry_rate = simple_strtoul(buf, NULL, 0);
8059 if (priv->retry_rate <= 0)
8060 priv->retry_rate = 1;
8061
8062 return count;
8063 }
8064
8065 static ssize_t show_retry_rate(struct device *d,
8066 struct device_attribute *attr, char *buf)
8067 {
8068 struct iwl3945_priv *priv = dev_get_drvdata(d);
8069 return sprintf(buf, "%d", priv->retry_rate);
8070 }
8071
8072 static DEVICE_ATTR(retry_rate, S_IWUSR | S_IRUSR, show_retry_rate,
8073 store_retry_rate);
8074
8075 static ssize_t store_power_level(struct device *d,
8076 struct device_attribute *attr,
8077 const char *buf, size_t count)
8078 {
8079 struct iwl3945_priv *priv = dev_get_drvdata(d);
8080 int rc;
8081 int mode;
8082
8083 mode = simple_strtoul(buf, NULL, 0);
8084 mutex_lock(&priv->mutex);
8085
8086 if (!iwl3945_is_ready(priv)) {
8087 rc = -EAGAIN;
8088 goto out;
8089 }
8090
8091 if ((mode < 1) || (mode > IWL_POWER_LIMIT) || (mode == IWL_POWER_AC))
8092 mode = IWL_POWER_AC;
8093 else
8094 mode |= IWL_POWER_ENABLED;
8095
8096 if (mode != priv->power_mode) {
8097 rc = iwl3945_send_power_mode(priv, IWL_POWER_LEVEL(mode));
8098 if (rc) {
8099 IWL_DEBUG_MAC80211("failed setting power mode.\n");
8100 goto out;
8101 }
8102 priv->power_mode = mode;
8103 }
8104
8105 rc = count;
8106
8107 out:
8108 mutex_unlock(&priv->mutex);
8109 return rc;
8110 }
8111
8112 #define MAX_WX_STRING 80
8113
8114 /* Values are in microsecond */
8115 static const s32 timeout_duration[] = {
8116 350000,
8117 250000,
8118 75000,
8119 37000,
8120 25000,
8121 };
8122 static const s32 period_duration[] = {
8123 400000,
8124 700000,
8125 1000000,
8126 1000000,
8127 1000000
8128 };
8129
8130 static ssize_t show_power_level(struct device *d,
8131 struct device_attribute *attr, char *buf)
8132 {
8133 struct iwl3945_priv *priv = dev_get_drvdata(d);
8134 int level = IWL_POWER_LEVEL(priv->power_mode);
8135 char *p = buf;
8136
8137 p += sprintf(p, "%d ", level);
8138 switch (level) {
8139 case IWL_POWER_MODE_CAM:
8140 case IWL_POWER_AC:
8141 p += sprintf(p, "(AC)");
8142 break;
8143 case IWL_POWER_BATTERY:
8144 p += sprintf(p, "(BATTERY)");
8145 break;
8146 default:
8147 p += sprintf(p,
8148 "(Timeout %dms, Period %dms)",
8149 timeout_duration[level - 1] / 1000,
8150 period_duration[level - 1] / 1000);
8151 }
8152
8153 if (!(priv->power_mode & IWL_POWER_ENABLED))
8154 p += sprintf(p, " OFF\n");
8155 else
8156 p += sprintf(p, " \n");
8157
8158 return (p - buf + 1);
8159
8160 }
8161
8162 static DEVICE_ATTR(power_level, S_IWUSR | S_IRUSR, show_power_level,
8163 store_power_level);
8164
8165 static ssize_t show_channels(struct device *d,
8166 struct device_attribute *attr, char *buf)
8167 {
8168 struct iwl3945_priv *priv = dev_get_drvdata(d);
8169 int len = 0, i;
8170 struct ieee80211_channel *channels = NULL;
8171 const struct ieee80211_hw_mode *hw_mode = NULL;
8172 int count = 0;
8173
8174 if (!iwl3945_is_ready(priv))
8175 return -EAGAIN;
8176
8177 hw_mode = iwl3945_get_hw_mode(priv, MODE_IEEE80211G);
8178 if (!hw_mode)
8179 hw_mode = iwl3945_get_hw_mode(priv, MODE_IEEE80211B);
8180 if (hw_mode) {
8181 channels = hw_mode->channels;
8182 count = hw_mode->num_channels;
8183 }
8184
8185 len +=
8186 sprintf(&buf[len],
8187 "Displaying %d channels in 2.4GHz band "
8188 "(802.11bg):\n", count);
8189
8190 for (i = 0; i < count; i++)
8191 len += sprintf(&buf[len], "%d: %ddBm: BSS%s%s, %s.\n",
8192 channels[i].chan,
8193 channels[i].power_level,
8194 channels[i].
8195 flag & IEEE80211_CHAN_W_RADAR_DETECT ?
8196 " (IEEE 802.11h required)" : "",
8197 (!(channels[i].flag & IEEE80211_CHAN_W_IBSS)
8198 || (channels[i].
8199 flag &
8200 IEEE80211_CHAN_W_RADAR_DETECT)) ? "" :
8201 ", IBSS",
8202 channels[i].
8203 flag & IEEE80211_CHAN_W_ACTIVE_SCAN ?
8204 "active/passive" : "passive only");
8205
8206 hw_mode = iwl3945_get_hw_mode(priv, MODE_IEEE80211A);
8207 if (hw_mode) {
8208 channels = hw_mode->channels;
8209 count = hw_mode->num_channels;
8210 } else {
8211 channels = NULL;
8212 count = 0;
8213 }
8214
8215 len += sprintf(&buf[len], "Displaying %d channels in 5.2GHz band "
8216 "(802.11a):\n", count);
8217
8218 for (i = 0; i < count; i++)
8219 len += sprintf(&buf[len], "%d: %ddBm: BSS%s%s, %s.\n",
8220 channels[i].chan,
8221 channels[i].power_level,
8222 channels[i].
8223 flag & IEEE80211_CHAN_W_RADAR_DETECT ?
8224 " (IEEE 802.11h required)" : "",
8225 (!(channels[i].flag & IEEE80211_CHAN_W_IBSS)
8226 || (channels[i].
8227 flag &
8228 IEEE80211_CHAN_W_RADAR_DETECT)) ? "" :
8229 ", IBSS",
8230 channels[i].
8231 flag & IEEE80211_CHAN_W_ACTIVE_SCAN ?
8232 "active/passive" : "passive only");
8233
8234 return len;
8235 }
8236
8237 static DEVICE_ATTR(channels, S_IRUSR, show_channels, NULL);
8238
8239 static ssize_t show_statistics(struct device *d,
8240 struct device_attribute *attr, char *buf)
8241 {
8242 struct iwl3945_priv *priv = dev_get_drvdata(d);
8243 u32 size = sizeof(struct iwl3945_notif_statistics);
8244 u32 len = 0, ofs = 0;
8245 u8 *data = (u8 *) & priv->statistics;
8246 int rc = 0;
8247
8248 if (!iwl3945_is_alive(priv))
8249 return -EAGAIN;
8250
8251 mutex_lock(&priv->mutex);
8252 rc = iwl3945_send_statistics_request(priv);
8253 mutex_unlock(&priv->mutex);
8254
8255 if (rc) {
8256 len = sprintf(buf,
8257 "Error sending statistics request: 0x%08X\n", rc);
8258 return len;
8259 }
8260
8261 while (size && (PAGE_SIZE - len)) {
8262 hex_dump_to_buffer(data + ofs, size, 16, 1, buf + len,
8263 PAGE_SIZE - len, 1);
8264 len = strlen(buf);
8265 if (PAGE_SIZE - len)
8266 buf[len++] = '\n';
8267
8268 ofs += 16;
8269 size -= min(size, 16U);
8270 }
8271
8272 return len;
8273 }
8274
8275 static DEVICE_ATTR(statistics, S_IRUGO, show_statistics, NULL);
8276
8277 static ssize_t show_antenna(struct device *d,
8278 struct device_attribute *attr, char *buf)
8279 {
8280 struct iwl3945_priv *priv = dev_get_drvdata(d);
8281
8282 if (!iwl3945_is_alive(priv))
8283 return -EAGAIN;
8284
8285 return sprintf(buf, "%d\n", priv->antenna);
8286 }
8287
8288 static ssize_t store_antenna(struct device *d,
8289 struct device_attribute *attr,
8290 const char *buf, size_t count)
8291 {
8292 int ant;
8293 struct iwl3945_priv *priv = dev_get_drvdata(d);
8294
8295 if (count == 0)
8296 return 0;
8297
8298 if (sscanf(buf, "%1i", &ant) != 1) {
8299 IWL_DEBUG_INFO("not in hex or decimal form.\n");
8300 return count;
8301 }
8302
8303 if ((ant >= 0) && (ant <= 2)) {
8304 IWL_DEBUG_INFO("Setting antenna select to %d.\n", ant);
8305 priv->antenna = (enum iwl3945_antenna)ant;
8306 } else
8307 IWL_DEBUG_INFO("Bad antenna select value %d.\n", ant);
8308
8309
8310 return count;
8311 }
8312
8313 static DEVICE_ATTR(antenna, S_IWUSR | S_IRUGO, show_antenna, store_antenna);
8314
8315 static ssize_t show_status(struct device *d,
8316 struct device_attribute *attr, char *buf)
8317 {
8318 struct iwl3945_priv *priv = (struct iwl3945_priv *)d->driver_data;
8319 if (!iwl3945_is_alive(priv))
8320 return -EAGAIN;
8321 return sprintf(buf, "0x%08x\n", (int)priv->status);
8322 }
8323
8324 static DEVICE_ATTR(status, S_IRUGO, show_status, NULL);
8325
8326 static ssize_t dump_error_log(struct device *d,
8327 struct device_attribute *attr,
8328 const char *buf, size_t count)
8329 {
8330 char *p = (char *)buf;
8331
8332 if (p[0] == '1')
8333 iwl3945_dump_nic_error_log((struct iwl3945_priv *)d->driver_data);
8334
8335 return strnlen(buf, count);
8336 }
8337
8338 static DEVICE_ATTR(dump_errors, S_IWUSR, NULL, dump_error_log);
8339
8340 static ssize_t dump_event_log(struct device *d,
8341 struct device_attribute *attr,
8342 const char *buf, size_t count)
8343 {
8344 char *p = (char *)buf;
8345
8346 if (p[0] == '1')
8347 iwl3945_dump_nic_event_log((struct iwl3945_priv *)d->driver_data);
8348
8349 return strnlen(buf, count);
8350 }
8351
8352 static DEVICE_ATTR(dump_events, S_IWUSR, NULL, dump_event_log);
8353
8354 /*****************************************************************************
8355 *
8356 * driver setup and teardown
8357 *
8358 *****************************************************************************/
8359
8360 static void iwl3945_setup_deferred_work(struct iwl3945_priv *priv)
8361 {
8362 priv->workqueue = create_workqueue(DRV_NAME);
8363
8364 init_waitqueue_head(&priv->wait_command_queue);
8365
8366 INIT_WORK(&priv->up, iwl3945_bg_up);
8367 INIT_WORK(&priv->restart, iwl3945_bg_restart);
8368 INIT_WORK(&priv->rx_replenish, iwl3945_bg_rx_replenish);
8369 INIT_WORK(&priv->scan_completed, iwl3945_bg_scan_completed);
8370 INIT_WORK(&priv->request_scan, iwl3945_bg_request_scan);
8371 INIT_WORK(&priv->abort_scan, iwl3945_bg_abort_scan);
8372 INIT_WORK(&priv->rf_kill, iwl3945_bg_rf_kill);
8373 INIT_WORK(&priv->beacon_update, iwl3945_bg_beacon_update);
8374 INIT_DELAYED_WORK(&priv->post_associate, iwl3945_bg_post_associate);
8375 INIT_DELAYED_WORK(&priv->init_alive_start, iwl3945_bg_init_alive_start);
8376 INIT_DELAYED_WORK(&priv->alive_start, iwl3945_bg_alive_start);
8377 INIT_DELAYED_WORK(&priv->scan_check, iwl3945_bg_scan_check);
8378
8379 iwl3945_hw_setup_deferred_work(priv);
8380
8381 tasklet_init(&priv->irq_tasklet, (void (*)(unsigned long))
8382 iwl3945_irq_tasklet, (unsigned long)priv);
8383 }
8384
8385 static void iwl3945_cancel_deferred_work(struct iwl3945_priv *priv)
8386 {
8387 iwl3945_hw_cancel_deferred_work(priv);
8388
8389 cancel_delayed_work_sync(&priv->init_alive_start);
8390 cancel_delayed_work(&priv->scan_check);
8391 cancel_delayed_work(&priv->alive_start);
8392 cancel_delayed_work(&priv->post_associate);
8393 cancel_work_sync(&priv->beacon_update);
8394 }
8395
8396 static struct attribute *iwl3945_sysfs_entries[] = {
8397 &dev_attr_antenna.attr,
8398 &dev_attr_channels.attr,
8399 &dev_attr_dump_errors.attr,
8400 &dev_attr_dump_events.attr,
8401 &dev_attr_flags.attr,
8402 &dev_attr_filter_flags.attr,
8403 #ifdef CONFIG_IWL3945_SPECTRUM_MEASUREMENT
8404 &dev_attr_measurement.attr,
8405 #endif
8406 &dev_attr_power_level.attr,
8407 &dev_attr_rate.attr,
8408 &dev_attr_retry_rate.attr,
8409 &dev_attr_rf_kill.attr,
8410 &dev_attr_rs_window.attr,
8411 &dev_attr_statistics.attr,
8412 &dev_attr_status.attr,
8413 &dev_attr_temperature.attr,
8414 &dev_attr_tune.attr,
8415 &dev_attr_tx_power.attr,
8416
8417 NULL
8418 };
8419
8420 static struct attribute_group iwl3945_attribute_group = {
8421 .name = NULL, /* put in device directory */
8422 .attrs = iwl3945_sysfs_entries,
8423 };
8424
8425 static struct ieee80211_ops iwl3945_hw_ops = {
8426 .tx = iwl3945_mac_tx,
8427 .start = iwl3945_mac_start,
8428 .stop = iwl3945_mac_stop,
8429 .add_interface = iwl3945_mac_add_interface,
8430 .remove_interface = iwl3945_mac_remove_interface,
8431 .config = iwl3945_mac_config,
8432 .config_interface = iwl3945_mac_config_interface,
8433 .configure_filter = iwl3945_configure_filter,
8434 .set_key = iwl3945_mac_set_key,
8435 .get_stats = iwl3945_mac_get_stats,
8436 .get_tx_stats = iwl3945_mac_get_tx_stats,
8437 .conf_tx = iwl3945_mac_conf_tx,
8438 .get_tsf = iwl3945_mac_get_tsf,
8439 .reset_tsf = iwl3945_mac_reset_tsf,
8440 .beacon_update = iwl3945_mac_beacon_update,
8441 .hw_scan = iwl3945_mac_hw_scan
8442 };
8443
8444 static int iwl3945_pci_probe(struct pci_dev *pdev, const struct pci_device_id *ent)
8445 {
8446 int err = 0;
8447 u32 pci_id;
8448 struct iwl3945_priv *priv;
8449 struct ieee80211_hw *hw;
8450 int i;
8451 DECLARE_MAC_BUF(mac);
8452
8453 /* Disabling hardware scan means that mac80211 will perform scans
8454 * "the hard way", rather than using device's scan. */
8455 if (iwl3945_param_disable_hw_scan) {
8456 IWL_DEBUG_INFO("Disabling hw_scan\n");
8457 iwl3945_hw_ops.hw_scan = NULL;
8458 }
8459
8460 if ((iwl3945_param_queues_num > IWL_MAX_NUM_QUEUES) ||
8461 (iwl3945_param_queues_num < IWL_MIN_NUM_QUEUES)) {
8462 IWL_ERROR("invalid queues_num, should be between %d and %d\n",
8463 IWL_MIN_NUM_QUEUES, IWL_MAX_NUM_QUEUES);
8464 err = -EINVAL;
8465 goto out;
8466 }
8467
8468 /* mac80211 allocates memory for this device instance, including
8469 * space for this driver's private structure */
8470 hw = ieee80211_alloc_hw(sizeof(struct iwl3945_priv), &iwl3945_hw_ops);
8471 if (hw == NULL) {
8472 IWL_ERROR("Can not allocate network device\n");
8473 err = -ENOMEM;
8474 goto out;
8475 }
8476 SET_IEEE80211_DEV(hw, &pdev->dev);
8477
8478 hw->rate_control_algorithm = "iwl-3945-rs";
8479
8480 IWL_DEBUG_INFO("*** LOAD DRIVER ***\n");
8481 priv = hw->priv;
8482 priv->hw = hw;
8483
8484 priv->pci_dev = pdev;
8485
8486 /* Select antenna (may be helpful if only one antenna is connected) */
8487 priv->antenna = (enum iwl3945_antenna)iwl3945_param_antenna;
8488 #ifdef CONFIG_IWL3945_DEBUG
8489 iwl3945_debug_level = iwl3945_param_debug;
8490 atomic_set(&priv->restrict_refcnt, 0);
8491 #endif
8492 priv->retry_rate = 1;
8493
8494 priv->ibss_beacon = NULL;
8495
8496 /* Tell mac80211 and its clients (e.g. Wireless Extensions)
8497 * the range of signal quality values that we'll provide.
8498 * Negative values for level/noise indicate that we'll provide dBm.
8499 * For WE, at least, non-0 values here *enable* display of values
8500 * in app (iwconfig). */
8501 hw->max_rssi = -20; /* signal level, negative indicates dBm */
8502 hw->max_noise = -20; /* noise level, negative indicates dBm */
8503 hw->max_signal = 100; /* link quality indication (%) */
8504
8505 /* Tell mac80211 our Tx characteristics */
8506 hw->flags = IEEE80211_HW_HOST_GEN_BEACON_TEMPLATE;
8507
8508 /* 4 EDCA QOS priorities */
8509 hw->queues = 4;
8510
8511 spin_lock_init(&priv->lock);
8512 spin_lock_init(&priv->power_data.lock);
8513 spin_lock_init(&priv->sta_lock);
8514 spin_lock_init(&priv->hcmd_lock);
8515
8516 for (i = 0; i < IWL_IBSS_MAC_HASH_SIZE; i++)
8517 INIT_LIST_HEAD(&priv->ibss_mac_hash[i]);
8518
8519 INIT_LIST_HEAD(&priv->free_frames);
8520
8521 mutex_init(&priv->mutex);
8522 if (pci_enable_device(pdev)) {
8523 err = -ENODEV;
8524 goto out_ieee80211_free_hw;
8525 }
8526
8527 pci_set_master(pdev);
8528
8529 /* Clear the driver's (not device's) station table */
8530 iwl3945_clear_stations_table(priv);
8531
8532 priv->data_retry_limit = -1;
8533 priv->ieee_channels = NULL;
8534 priv->ieee_rates = NULL;
8535 priv->phymode = -1;
8536
8537 err = pci_set_dma_mask(pdev, DMA_32BIT_MASK);
8538 if (!err)
8539 err = pci_set_consistent_dma_mask(pdev, DMA_32BIT_MASK);
8540 if (err) {
8541 printk(KERN_WARNING DRV_NAME ": No suitable DMA available.\n");
8542 goto out_pci_disable_device;
8543 }
8544
8545 pci_set_drvdata(pdev, priv);
8546 err = pci_request_regions(pdev, DRV_NAME);
8547 if (err)
8548 goto out_pci_disable_device;
8549
8550 /* We disable the RETRY_TIMEOUT register (0x41) to keep
8551 * PCI Tx retries from interfering with C3 CPU state */
8552 pci_write_config_byte(pdev, 0x41, 0x00);
8553
8554 priv->hw_base = pci_iomap(pdev, 0, 0);
8555 if (!priv->hw_base) {
8556 err = -ENODEV;
8557 goto out_pci_release_regions;
8558 }
8559
8560 IWL_DEBUG_INFO("pci_resource_len = 0x%08llx\n",
8561 (unsigned long long) pci_resource_len(pdev, 0));
8562 IWL_DEBUG_INFO("pci_resource_base = %p\n", priv->hw_base);
8563
8564 /* Initialize module parameter values here */
8565
8566 /* Disable radio (SW RF KILL) via parameter when loading driver */
8567 if (iwl3945_param_disable) {
8568 set_bit(STATUS_RF_KILL_SW, &priv->status);
8569 IWL_DEBUG_INFO("Radio disabled.\n");
8570 }
8571
8572 priv->iw_mode = IEEE80211_IF_TYPE_STA;
8573
8574 pci_id =
8575 (priv->pci_dev->device << 16) | priv->pci_dev->subsystem_device;
8576
8577 switch (pci_id) {
8578 case 0x42221005: /* 0x4222 0x8086 0x1005 is BG SKU */
8579 case 0x42221034: /* 0x4222 0x8086 0x1034 is BG SKU */
8580 case 0x42271014: /* 0x4227 0x8086 0x1014 is BG SKU */
8581 case 0x42221044: /* 0x4222 0x8086 0x1044 is BG SKU */
8582 priv->is_abg = 0;
8583 break;
8584
8585 /*
8586 * Rest are assumed ABG SKU -- if this is not the
8587 * case then the card will get the wrong 'Detected'
8588 * line in the kernel log however the code that
8589 * initializes the GEO table will detect no A-band
8590 * channels and remove the is_abg mask.
8591 */
8592 default:
8593 priv->is_abg = 1;
8594 break;
8595 }
8596
8597 printk(KERN_INFO DRV_NAME
8598 ": Detected Intel PRO/Wireless 3945%sBG Network Connection\n",
8599 priv->is_abg ? "A" : "");
8600
8601 /* Device-specific setup */
8602 if (iwl3945_hw_set_hw_setting(priv)) {
8603 IWL_ERROR("failed to set hw settings\n");
8604 goto out_iounmap;
8605 }
8606
8607 #ifdef CONFIG_IWL3945_QOS
8608 if (iwl3945_param_qos_enable)
8609 priv->qos_data.qos_enable = 1;
8610
8611 iwl3945_reset_qos(priv);
8612
8613 priv->qos_data.qos_active = 0;
8614 priv->qos_data.qos_cap.val = 0;
8615 #endif /* CONFIG_IWL3945_QOS */
8616
8617 iwl3945_set_rxon_channel(priv, MODE_IEEE80211G, 6);
8618 iwl3945_setup_deferred_work(priv);
8619 iwl3945_setup_rx_handlers(priv);
8620
8621 priv->rates_mask = IWL_RATES_MASK;
8622 /* If power management is turned on, default to AC mode */
8623 priv->power_mode = IWL_POWER_AC;
8624 priv->user_txpower_limit = IWL_DEFAULT_TX_POWER;
8625
8626 iwl3945_disable_interrupts(priv);
8627
8628 err = sysfs_create_group(&pdev->dev.kobj, &iwl3945_attribute_group);
8629 if (err) {
8630 IWL_ERROR("failed to create sysfs device attributes\n");
8631 goto out_release_irq;
8632 }
8633
8634 /* nic init */
8635 iwl3945_set_bit(priv, CSR_GIO_CHICKEN_BITS,
8636 CSR_GIO_CHICKEN_BITS_REG_BIT_DIS_L0S_EXIT_TIMER);
8637
8638 iwl3945_set_bit(priv, CSR_GP_CNTRL, CSR_GP_CNTRL_REG_FLAG_INIT_DONE);
8639 err = iwl3945_poll_bit(priv, CSR_GP_CNTRL,
8640 CSR_GP_CNTRL_REG_FLAG_MAC_CLOCK_READY,
8641 CSR_GP_CNTRL_REG_FLAG_MAC_CLOCK_READY, 25000);
8642 if (err < 0) {
8643 IWL_DEBUG_INFO("Failed to init the card\n");
8644 goto out_remove_sysfs;
8645 }
8646 /* Read the EEPROM */
8647 err = iwl3945_eeprom_init(priv);
8648 if (err) {
8649 IWL_ERROR("Unable to init EEPROM\n");
8650 goto out_remove_sysfs;
8651 }
8652 /* MAC Address location in EEPROM same for 3945/4965 */
8653 get_eeprom_mac(priv, priv->mac_addr);
8654 IWL_DEBUG_INFO("MAC address: %s\n", print_mac(mac, priv->mac_addr));
8655 SET_IEEE80211_PERM_ADDR(priv->hw, priv->mac_addr);
8656
8657 err = iwl3945_init_channel_map(priv);
8658 if (err) {
8659 IWL_ERROR("initializing regulatory failed: %d\n", err);
8660 goto out_remove_sysfs;
8661 }
8662
8663 err = iwl3945_init_geos(priv);
8664 if (err) {
8665 IWL_ERROR("initializing geos failed: %d\n", err);
8666 goto out_free_channel_map;
8667 }
8668 iwl3945_reset_channel_flag(priv);
8669
8670 iwl3945_rate_control_register(priv->hw);
8671 err = ieee80211_register_hw(priv->hw);
8672 if (err) {
8673 IWL_ERROR("Failed to register network device (error %d)\n", err);
8674 goto out_free_geos;
8675 }
8676
8677 priv->hw->conf.beacon_int = 100;
8678 priv->mac80211_registered = 1;
8679 pci_save_state(pdev);
8680 pci_disable_device(pdev);
8681
8682 return 0;
8683
8684 out_free_geos:
8685 iwl3945_free_geos(priv);
8686 out_free_channel_map:
8687 iwl3945_free_channel_map(priv);
8688 out_remove_sysfs:
8689 sysfs_remove_group(&pdev->dev.kobj, &iwl3945_attribute_group);
8690
8691 out_release_irq:
8692 destroy_workqueue(priv->workqueue);
8693 priv->workqueue = NULL;
8694 iwl3945_unset_hw_setting(priv);
8695
8696 out_iounmap:
8697 pci_iounmap(pdev, priv->hw_base);
8698 out_pci_release_regions:
8699 pci_release_regions(pdev);
8700 out_pci_disable_device:
8701 pci_disable_device(pdev);
8702 pci_set_drvdata(pdev, NULL);
8703 out_ieee80211_free_hw:
8704 ieee80211_free_hw(priv->hw);
8705 out:
8706 return err;
8707 }
8708
8709 static void iwl3945_pci_remove(struct pci_dev *pdev)
8710 {
8711 struct iwl3945_priv *priv = pci_get_drvdata(pdev);
8712 struct list_head *p, *q;
8713 int i;
8714
8715 if (!priv)
8716 return;
8717
8718 IWL_DEBUG_INFO("*** UNLOAD DRIVER ***\n");
8719
8720 set_bit(STATUS_EXIT_PENDING, &priv->status);
8721
8722 iwl3945_down(priv);
8723
8724 /* Free MAC hash list for ADHOC */
8725 for (i = 0; i < IWL_IBSS_MAC_HASH_SIZE; i++) {
8726 list_for_each_safe(p, q, &priv->ibss_mac_hash[i]) {
8727 list_del(p);
8728 kfree(list_entry(p, struct iwl3945_ibss_seq, list));
8729 }
8730 }
8731
8732 sysfs_remove_group(&pdev->dev.kobj, &iwl3945_attribute_group);
8733
8734 iwl3945_dealloc_ucode_pci(priv);
8735
8736 if (priv->rxq.bd)
8737 iwl3945_rx_queue_free(priv, &priv->rxq);
8738 iwl3945_hw_txq_ctx_free(priv);
8739
8740 iwl3945_unset_hw_setting(priv);
8741 iwl3945_clear_stations_table(priv);
8742
8743 if (priv->mac80211_registered) {
8744 ieee80211_unregister_hw(priv->hw);
8745 iwl3945_rate_control_unregister(priv->hw);
8746 }
8747
8748 /*netif_stop_queue(dev); */
8749 flush_workqueue(priv->workqueue);
8750
8751 /* ieee80211_unregister_hw calls iwl3945_mac_stop, which flushes
8752 * priv->workqueue... so we can't take down the workqueue
8753 * until now... */
8754 destroy_workqueue(priv->workqueue);
8755 priv->workqueue = NULL;
8756
8757 pci_iounmap(pdev, priv->hw_base);
8758 pci_release_regions(pdev);
8759 pci_disable_device(pdev);
8760 pci_set_drvdata(pdev, NULL);
8761
8762 iwl3945_free_channel_map(priv);
8763 iwl3945_free_geos(priv);
8764
8765 if (priv->ibss_beacon)
8766 dev_kfree_skb(priv->ibss_beacon);
8767
8768 ieee80211_free_hw(priv->hw);
8769 }
8770
8771 #ifdef CONFIG_PM
8772
8773 static int iwl3945_pci_suspend(struct pci_dev *pdev, pm_message_t state)
8774 {
8775 struct iwl3945_priv *priv = pci_get_drvdata(pdev);
8776
8777 if (priv->is_open) {
8778 set_bit(STATUS_IN_SUSPEND, &priv->status);
8779 iwl3945_mac_stop(priv->hw);
8780 priv->is_open = 1;
8781 }
8782
8783 pci_set_power_state(pdev, PCI_D3hot);
8784
8785 return 0;
8786 }
8787
8788 static int iwl3945_pci_resume(struct pci_dev *pdev)
8789 {
8790 struct iwl3945_priv *priv = pci_get_drvdata(pdev);
8791
8792 pci_set_power_state(pdev, PCI_D0);
8793
8794 if (priv->is_open)
8795 iwl3945_mac_start(priv->hw);
8796
8797 clear_bit(STATUS_IN_SUSPEND, &priv->status);
8798 return 0;
8799 }
8800
8801 #endif /* CONFIG_PM */
8802
8803 /*****************************************************************************
8804 *
8805 * driver and module entry point
8806 *
8807 *****************************************************************************/
8808
8809 static struct pci_driver iwl3945_driver = {
8810 .name = DRV_NAME,
8811 .id_table = iwl3945_hw_card_ids,
8812 .probe = iwl3945_pci_probe,
8813 .remove = __devexit_p(iwl3945_pci_remove),
8814 #ifdef CONFIG_PM
8815 .suspend = iwl3945_pci_suspend,
8816 .resume = iwl3945_pci_resume,
8817 #endif
8818 };
8819
8820 static int __init iwl3945_init(void)
8821 {
8822
8823 int ret;
8824 printk(KERN_INFO DRV_NAME ": " DRV_DESCRIPTION ", " DRV_VERSION "\n");
8825 printk(KERN_INFO DRV_NAME ": " DRV_COPYRIGHT "\n");
8826 ret = pci_register_driver(&iwl3945_driver);
8827 if (ret) {
8828 IWL_ERROR("Unable to initialize PCI module\n");
8829 return ret;
8830 }
8831 #ifdef CONFIG_IWL3945_DEBUG
8832 ret = driver_create_file(&iwl3945_driver.driver, &driver_attr_debug_level);
8833 if (ret) {
8834 IWL_ERROR("Unable to create driver sysfs file\n");
8835 pci_unregister_driver(&iwl3945_driver);
8836 return ret;
8837 }
8838 #endif
8839
8840 return ret;
8841 }
8842
8843 static void __exit iwl3945_exit(void)
8844 {
8845 #ifdef CONFIG_IWL3945_DEBUG
8846 driver_remove_file(&iwl3945_driver.driver, &driver_attr_debug_level);
8847 #endif
8848 pci_unregister_driver(&iwl3945_driver);
8849 }
8850
8851 module_param_named(antenna, iwl3945_param_antenna, int, 0444);
8852 MODULE_PARM_DESC(antenna, "select antenna (1=Main, 2=Aux, default 0 [both])");
8853 module_param_named(disable, iwl3945_param_disable, int, 0444);
8854 MODULE_PARM_DESC(disable, "manually disable the radio (default 0 [radio on])");
8855 module_param_named(hwcrypto, iwl3945_param_hwcrypto, int, 0444);
8856 MODULE_PARM_DESC(hwcrypto,
8857 "using hardware crypto engine (default 0 [software])\n");
8858 module_param_named(debug, iwl3945_param_debug, int, 0444);
8859 MODULE_PARM_DESC(debug, "debug output mask");
8860 module_param_named(disable_hw_scan, iwl3945_param_disable_hw_scan, int, 0444);
8861 MODULE_PARM_DESC(disable_hw_scan, "disable hardware scanning (default 0)");
8862
8863 module_param_named(queues_num, iwl3945_param_queues_num, int, 0444);
8864 MODULE_PARM_DESC(queues_num, "number of hw queues.");
8865
8866 /* QoS */
8867 module_param_named(qos_enable, iwl3945_param_qos_enable, int, 0444);
8868 MODULE_PARM_DESC(qos_enable, "enable all QoS functionality");
8869
8870 module_exit(iwl3945_exit);
8871 module_init(iwl3945_init);
WRT350N Kernel Patches