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iwlwifi: update version number to 1.2.22
[wrt350n-kernel.git] / drivers / net / wireless / iwlwifi / iwl3945-base.c
blobae352daeb3fb60e42c4b04b0b91770a43c61bd74
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 "1.2.22k" 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 if (iwl3945_queue_space(q) < ((cmd->meta.flags & CMD_ASYNC) ? 2 : 1)) {
691 IWL_ERROR("No space for Tx\n");
692 return -ENOSPC;
693 }
694
695 spin_lock_irqsave(&priv->hcmd_lock, flags);
696
697 tfd = &txq->bd[q->write_ptr];
698 memset(tfd, 0, sizeof(*tfd));
699
700 control_flags = (u32 *) tfd;
701
702 idx = get_cmd_index(q, q->write_ptr, cmd->meta.flags & CMD_SIZE_HUGE);
703 out_cmd = &txq->cmd[idx];
704
705 out_cmd->hdr.cmd = cmd->id;
706 memcpy(&out_cmd->meta, &cmd->meta, sizeof(cmd->meta));
707 memcpy(&out_cmd->cmd.payload, cmd->data, cmd->len);
708
709 /* At this point, the out_cmd now has all of the incoming cmd
710 * information */
711
712 out_cmd->hdr.flags = 0;
713 out_cmd->hdr.sequence = cpu_to_le16(QUEUE_TO_SEQ(IWL_CMD_QUEUE_NUM) |
714 INDEX_TO_SEQ(q->write_ptr));
715 if (out_cmd->meta.flags & CMD_SIZE_HUGE)
716 out_cmd->hdr.sequence |= cpu_to_le16(SEQ_HUGE_FRAME);
717
718 phys_addr = txq->dma_addr_cmd + sizeof(txq->cmd[0]) * idx +
719 offsetof(struct iwl3945_cmd, hdr);
720 iwl3945_hw_txq_attach_buf_to_tfd(priv, tfd, phys_addr, fix_size);
721
722 pad = U32_PAD(cmd->len);
723 count = TFD_CTL_COUNT_GET(*control_flags);
724 *control_flags = TFD_CTL_COUNT_SET(count) | TFD_CTL_PAD_SET(pad);
725
726 IWL_DEBUG_HC("Sending command %s (#%x), seq: 0x%04X, "
727 "%d bytes at %d[%d]:%d\n",
728 get_cmd_string(out_cmd->hdr.cmd),
729 out_cmd->hdr.cmd, le16_to_cpu(out_cmd->hdr.sequence),
730 fix_size, q->write_ptr, idx, IWL_CMD_QUEUE_NUM);
731
732 txq->need_update = 1;
733
734 /* Increment and update queue's write index */
735 q->write_ptr = iwl3945_queue_inc_wrap(q->write_ptr, q->n_bd);
736 ret = iwl3945_tx_queue_update_write_ptr(priv, txq);
737
738 spin_unlock_irqrestore(&priv->hcmd_lock, flags);
739 return ret ? ret : idx;
740 }
741
742 static int iwl3945_send_cmd_async(struct iwl3945_priv *priv, struct iwl3945_host_cmd *cmd)
743 {
744 int ret;
745
746 BUG_ON(!(cmd->meta.flags & CMD_ASYNC));
747
748 /* An asynchronous command can not expect an SKB to be set. */
749 BUG_ON(cmd->meta.flags & CMD_WANT_SKB);
750
751 /* An asynchronous command MUST have a callback. */
752 BUG_ON(!cmd->meta.u.callback);
753
754 if (test_bit(STATUS_EXIT_PENDING, &priv->status))
755 return -EBUSY;
756
757 ret = iwl3945_enqueue_hcmd(priv, cmd);
758 if (ret < 0) {
759 IWL_ERROR("Error sending %s: iwl3945_enqueue_hcmd failed: %d\n",
760 get_cmd_string(cmd->id), ret);
761 return ret;
762 }
763 return 0;
764 }
765
766 static int iwl3945_send_cmd_sync(struct iwl3945_priv *priv, struct iwl3945_host_cmd *cmd)
767 {
768 int cmd_idx;
769 int ret;
770 static atomic_t entry = ATOMIC_INIT(0); /* reentrance protection */
771
772 BUG_ON(cmd->meta.flags & CMD_ASYNC);
773
774 /* A synchronous command can not have a callback set. */
775 BUG_ON(cmd->meta.u.callback != NULL);
776
777 if (atomic_xchg(&entry, 1)) {
778 IWL_ERROR("Error sending %s: Already sending a host command\n",
779 get_cmd_string(cmd->id));
780 return -EBUSY;
781 }
782
783 set_bit(STATUS_HCMD_ACTIVE, &priv->status);
784
785 if (cmd->meta.flags & CMD_WANT_SKB)
786 cmd->meta.source = &cmd->meta;
787
788 cmd_idx = iwl3945_enqueue_hcmd(priv, cmd);
789 if (cmd_idx < 0) {
790 ret = cmd_idx;
791 IWL_ERROR("Error sending %s: iwl3945_enqueue_hcmd failed: %d\n",
792 get_cmd_string(cmd->id), ret);
793 goto out;
794 }
795
796 ret = wait_event_interruptible_timeout(priv->wait_command_queue,
797 !test_bit(STATUS_HCMD_ACTIVE, &priv->status),
798 HOST_COMPLETE_TIMEOUT);
799 if (!ret) {
800 if (test_bit(STATUS_HCMD_ACTIVE, &priv->status)) {
801 IWL_ERROR("Error sending %s: time out after %dms.\n",
802 get_cmd_string(cmd->id),
803 jiffies_to_msecs(HOST_COMPLETE_TIMEOUT));
804
805 clear_bit(STATUS_HCMD_ACTIVE, &priv->status);
806 ret = -ETIMEDOUT;
807 goto cancel;
808 }
809 }
810
811 if (test_bit(STATUS_RF_KILL_HW, &priv->status)) {
812 IWL_DEBUG_INFO("Command %s aborted: RF KILL Switch\n",
813 get_cmd_string(cmd->id));
814 ret = -ECANCELED;
815 goto fail;
816 }
817 if (test_bit(STATUS_FW_ERROR, &priv->status)) {
818 IWL_DEBUG_INFO("Command %s failed: FW Error\n",
819 get_cmd_string(cmd->id));
820 ret = -EIO;
821 goto fail;
822 }
823 if ((cmd->meta.flags & CMD_WANT_SKB) && !cmd->meta.u.skb) {
824 IWL_ERROR("Error: Response NULL in '%s'\n",
825 get_cmd_string(cmd->id));
826 ret = -EIO;
827 goto out;
828 }
829
830 ret = 0;
831 goto out;
832
833 cancel:
834 if (cmd->meta.flags & CMD_WANT_SKB) {
835 struct iwl3945_cmd *qcmd;
836
837 /* Cancel the CMD_WANT_SKB flag for the cmd in the
838 * TX cmd queue. Otherwise in case the cmd comes
839 * in later, it will possibly set an invalid
840 * address (cmd->meta.source). */
841 qcmd = &priv->txq[IWL_CMD_QUEUE_NUM].cmd[cmd_idx];
842 qcmd->meta.flags &= ~CMD_WANT_SKB;
843 }
844 fail:
845 if (cmd->meta.u.skb) {
846 dev_kfree_skb_any(cmd->meta.u.skb);
847 cmd->meta.u.skb = NULL;
848 }
849 out:
850 atomic_set(&entry, 0);
851 return ret;
852 }
853
854 int iwl3945_send_cmd(struct iwl3945_priv *priv, struct iwl3945_host_cmd *cmd)
855 {
856 if (cmd->meta.flags & CMD_ASYNC)
857 return iwl3945_send_cmd_async(priv, cmd);
858
859 return iwl3945_send_cmd_sync(priv, cmd);
860 }
861
862 int iwl3945_send_cmd_pdu(struct iwl3945_priv *priv, u8 id, u16 len, const void *data)
863 {
864 struct iwl3945_host_cmd cmd = {
865 .id = id,
866 .len = len,
867 .data = data,
868 };
869
870 return iwl3945_send_cmd_sync(priv, &cmd);
871 }
872
873 static int __must_check iwl3945_send_cmd_u32(struct iwl3945_priv *priv, u8 id, u32 val)
874 {
875 struct iwl3945_host_cmd cmd = {
876 .id = id,
877 .len = sizeof(val),
878 .data = &val,
879 };
880
881 return iwl3945_send_cmd_sync(priv, &cmd);
882 }
883
884 int iwl3945_send_statistics_request(struct iwl3945_priv *priv)
885 {
886 return iwl3945_send_cmd_u32(priv, REPLY_STATISTICS_CMD, 0);
887 }
888
889 /**
890 * iwl3945_set_rxon_channel - Set the phymode and channel values in staging RXON
891 * @phymode: MODE_IEEE80211A sets to 5.2GHz; all else set to 2.4GHz
892 * @channel: Any channel valid for the requested phymode
893
894 * In addition to setting the staging RXON, priv->phymode is also set.
895 *
896 * NOTE: Does not commit to the hardware; it sets appropriate bit fields
897 * in the staging RXON flag structure based on the phymode
898 */
899 static int iwl3945_set_rxon_channel(struct iwl3945_priv *priv, u8 phymode, u16 channel)
900 {
901 if (!iwl3945_get_channel_info(priv, phymode, channel)) {
902 IWL_DEBUG_INFO("Could not set channel to %d [%d]\n",
903 channel, phymode);
904 return -EINVAL;
905 }
906
907 if ((le16_to_cpu(priv->staging_rxon.channel) == channel) &&
908 (priv->phymode == phymode))
909 return 0;
910
911 priv->staging_rxon.channel = cpu_to_le16(channel);
912 if (phymode == MODE_IEEE80211A)
913 priv->staging_rxon.flags &= ~RXON_FLG_BAND_24G_MSK;
914 else
915 priv->staging_rxon.flags |= RXON_FLG_BAND_24G_MSK;
916
917 priv->phymode = phymode;
918
919 IWL_DEBUG_INFO("Staging channel set to %d [%d]\n", channel, phymode);
920
921 return 0;
922 }
923
924 /**
925 * iwl3945_check_rxon_cmd - validate RXON structure is valid
926 *
927 * NOTE: This is really only useful during development and can eventually
928 * be #ifdef'd out once the driver is stable and folks aren't actively
929 * making changes
930 */
931 static int iwl3945_check_rxon_cmd(struct iwl3945_rxon_cmd *rxon)
932 {
933 int error = 0;
934 int counter = 1;
935
936 if (rxon->flags & RXON_FLG_BAND_24G_MSK) {
937 error |= le32_to_cpu(rxon->flags &
938 (RXON_FLG_TGJ_NARROW_BAND_MSK |
939 RXON_FLG_RADAR_DETECT_MSK));
940 if (error)
941 IWL_WARNING("check 24G fields %d | %d\n",
942 counter++, error);
943 } else {
944 error |= (rxon->flags & RXON_FLG_SHORT_SLOT_MSK) ?
945 0 : le32_to_cpu(RXON_FLG_SHORT_SLOT_MSK);
946 if (error)
947 IWL_WARNING("check 52 fields %d | %d\n",
948 counter++, error);
949 error |= le32_to_cpu(rxon->flags & RXON_FLG_CCK_MSK);
950 if (error)
951 IWL_WARNING("check 52 CCK %d | %d\n",
952 counter++, error);
953 }
954 error |= (rxon->node_addr[0] | rxon->bssid_addr[0]) & 0x1;
955 if (error)
956 IWL_WARNING("check mac addr %d | %d\n", counter++, error);
957
958 /* make sure basic rates 6Mbps and 1Mbps are supported */
959 error |= (((rxon->ofdm_basic_rates & IWL_RATE_6M_MASK) == 0) &&
960 ((rxon->cck_basic_rates & IWL_RATE_1M_MASK) == 0));
961 if (error)
962 IWL_WARNING("check basic rate %d | %d\n", counter++, error);
963
964 error |= (le16_to_cpu(rxon->assoc_id) > 2007);
965 if (error)
966 IWL_WARNING("check assoc id %d | %d\n", counter++, error);
967
968 error |= ((rxon->flags & (RXON_FLG_CCK_MSK | RXON_FLG_SHORT_SLOT_MSK))
969 == (RXON_FLG_CCK_MSK | RXON_FLG_SHORT_SLOT_MSK));
970 if (error)
971 IWL_WARNING("check CCK and short slot %d | %d\n",
972 counter++, error);
973
974 error |= ((rxon->flags & (RXON_FLG_CCK_MSK | RXON_FLG_AUTO_DETECT_MSK))
975 == (RXON_FLG_CCK_MSK | RXON_FLG_AUTO_DETECT_MSK));
976 if (error)
977 IWL_WARNING("check CCK & auto detect %d | %d\n",
978 counter++, error);
979
980 error |= ((rxon->flags & (RXON_FLG_AUTO_DETECT_MSK |
981 RXON_FLG_TGG_PROTECT_MSK)) == RXON_FLG_TGG_PROTECT_MSK);
982 if (error)
983 IWL_WARNING("check TGG and auto detect %d | %d\n",
984 counter++, error);
985
986 if ((rxon->flags & RXON_FLG_DIS_DIV_MSK))
987 error |= ((rxon->flags & (RXON_FLG_ANT_B_MSK |
988 RXON_FLG_ANT_A_MSK)) == 0);
989 if (error)
990 IWL_WARNING("check antenna %d %d\n", counter++, error);
991
992 if (error)
993 IWL_WARNING("Tuning to channel %d\n",
994 le16_to_cpu(rxon->channel));
995
996 if (error) {
997 IWL_ERROR("Not a valid iwl3945_rxon_assoc_cmd field values\n");
998 return -1;
999 }
1000 return 0;
1001 }
1002
1003 /**
1004 * iwl3945_full_rxon_required - check if full RXON (vs RXON_ASSOC) cmd is needed
1005 * @priv: staging_rxon is compared to active_rxon
1006 *
1007 * If the RXON structure is changing enough to require a new tune,
1008 * or is clearing the RXON_FILTER_ASSOC_MSK, then return 1 to indicate that
1009 * a new tune (full RXON command, rather than RXON_ASSOC cmd) is required.
1010 */
1011 static int iwl3945_full_rxon_required(struct iwl3945_priv *priv)
1012 {
1013
1014 /* These items are only settable from the full RXON command */
1015 if (!(priv->active_rxon.filter_flags & RXON_FILTER_ASSOC_MSK) ||
1016 compare_ether_addr(priv->staging_rxon.bssid_addr,
1017 priv->active_rxon.bssid_addr) ||
1018 compare_ether_addr(priv->staging_rxon.node_addr,
1019 priv->active_rxon.node_addr) ||
1020 compare_ether_addr(priv->staging_rxon.wlap_bssid_addr,
1021 priv->active_rxon.wlap_bssid_addr) ||
1022 (priv->staging_rxon.dev_type != priv->active_rxon.dev_type) ||
1023 (priv->staging_rxon.channel != priv->active_rxon.channel) ||
1024 (priv->staging_rxon.air_propagation !=
1025 priv->active_rxon.air_propagation) ||
1026 (priv->staging_rxon.assoc_id != priv->active_rxon.assoc_id))
1027 return 1;
1028
1029 /* flags, filter_flags, ofdm_basic_rates, and cck_basic_rates can
1030 * be updated with the RXON_ASSOC command -- however only some
1031 * flag transitions are allowed using RXON_ASSOC */
1032
1033 /* Check if we are not switching bands */
1034 if ((priv->staging_rxon.flags & RXON_FLG_BAND_24G_MSK) !=
1035 (priv->active_rxon.flags & RXON_FLG_BAND_24G_MSK))
1036 return 1;
1037
1038 /* Check if we are switching association toggle */
1039 if ((priv->staging_rxon.filter_flags & RXON_FILTER_ASSOC_MSK) !=
1040 (priv->active_rxon.filter_flags & RXON_FILTER_ASSOC_MSK))
1041 return 1;
1042
1043 return 0;
1044 }
1045
1046 static int iwl3945_send_rxon_assoc(struct iwl3945_priv *priv)
1047 {
1048 int rc = 0;
1049 struct iwl3945_rx_packet *res = NULL;
1050 struct iwl3945_rxon_assoc_cmd rxon_assoc;
1051 struct iwl3945_host_cmd cmd = {
1052 .id = REPLY_RXON_ASSOC,
1053 .len = sizeof(rxon_assoc),
1054 .meta.flags = CMD_WANT_SKB,
1055 .data = &rxon_assoc,
1056 };
1057 const struct iwl3945_rxon_cmd *rxon1 = &priv->staging_rxon;
1058 const struct iwl3945_rxon_cmd *rxon2 = &priv->active_rxon;
1059
1060 if ((rxon1->flags == rxon2->flags) &&
1061 (rxon1->filter_flags == rxon2->filter_flags) &&
1062 (rxon1->cck_basic_rates == rxon2->cck_basic_rates) &&
1063 (rxon1->ofdm_basic_rates == rxon2->ofdm_basic_rates)) {
1064 IWL_DEBUG_INFO("Using current RXON_ASSOC. Not resending.\n");
1065 return 0;
1066 }
1067
1068 rxon_assoc.flags = priv->staging_rxon.flags;
1069 rxon_assoc.filter_flags = priv->staging_rxon.filter_flags;
1070 rxon_assoc.ofdm_basic_rates = priv->staging_rxon.ofdm_basic_rates;
1071 rxon_assoc.cck_basic_rates = priv->staging_rxon.cck_basic_rates;
1072 rxon_assoc.reserved = 0;
1073
1074 rc = iwl3945_send_cmd_sync(priv, &cmd);
1075 if (rc)
1076 return rc;
1077
1078 res = (struct iwl3945_rx_packet *)cmd.meta.u.skb->data;
1079 if (res->hdr.flags & IWL_CMD_FAILED_MSK) {
1080 IWL_ERROR("Bad return from REPLY_RXON_ASSOC command\n");
1081 rc = -EIO;
1082 }
1083
1084 priv->alloc_rxb_skb--;
1085 dev_kfree_skb_any(cmd.meta.u.skb);
1086
1087 return rc;
1088 }
1089
1090 /**
1091 * iwl3945_commit_rxon - commit staging_rxon to hardware
1092 *
1093 * The RXON command in staging_rxon is committed to the hardware and
1094 * the active_rxon structure is updated with the new data. This
1095 * function correctly transitions out of the RXON_ASSOC_MSK state if
1096 * a HW tune is required based on the RXON structure changes.
1097 */
1098 static int iwl3945_commit_rxon(struct iwl3945_priv *priv)
1099 {
1100 /* cast away the const for active_rxon in this function */
1101 struct iwl3945_rxon_cmd *active_rxon = (void *)&priv->active_rxon;
1102 int rc = 0;
1103 DECLARE_MAC_BUF(mac);
1104
1105 if (!iwl3945_is_alive(priv))
1106 return -1;
1107
1108 /* always get timestamp with Rx frame */
1109 priv->staging_rxon.flags |= RXON_FLG_TSF2HOST_MSK;
1110
1111 /* select antenna */
1112 priv->staging_rxon.flags &=
1113 ~(RXON_FLG_DIS_DIV_MSK | RXON_FLG_ANT_SEL_MSK);
1114 priv->staging_rxon.flags |= iwl3945_get_antenna_flags(priv);
1115
1116 rc = iwl3945_check_rxon_cmd(&priv->staging_rxon);
1117 if (rc) {
1118 IWL_ERROR("Invalid RXON configuration. Not committing.\n");
1119 return -EINVAL;
1120 }
1121
1122 /* If we don't need to send a full RXON, we can use
1123 * iwl3945_rxon_assoc_cmd which is used to reconfigure filter
1124 * and other flags for the current radio configuration. */
1125 if (!iwl3945_full_rxon_required(priv)) {
1126 rc = iwl3945_send_rxon_assoc(priv);
1127 if (rc) {
1128 IWL_ERROR("Error setting RXON_ASSOC "
1129 "configuration (%d).\n", rc);
1130 return rc;
1131 }
1132
1133 memcpy(active_rxon, &priv->staging_rxon, sizeof(*active_rxon));
1134
1135 return 0;
1136 }
1137
1138 /* If we are currently associated and the new config requires
1139 * an RXON_ASSOC and the new config wants the associated mask enabled,
1140 * we must clear the associated from the active configuration
1141 * before we apply the new config */
1142 if (iwl3945_is_associated(priv) &&
1143 (priv->staging_rxon.filter_flags & RXON_FILTER_ASSOC_MSK)) {
1144 IWL_DEBUG_INFO("Toggling associated bit on current RXON\n");
1145 active_rxon->filter_flags &= ~RXON_FILTER_ASSOC_MSK;
1146
1147 rc = iwl3945_send_cmd_pdu(priv, REPLY_RXON,
1148 sizeof(struct iwl3945_rxon_cmd),
1149 &priv->active_rxon);
1150
1151 /* If the mask clearing failed then we set
1152 * active_rxon back to what it was previously */
1153 if (rc) {
1154 active_rxon->filter_flags |= RXON_FILTER_ASSOC_MSK;
1155 IWL_ERROR("Error clearing ASSOC_MSK on current "
1156 "configuration (%d).\n", rc);
1157 return rc;
1158 }
1159 }
1160
1161 IWL_DEBUG_INFO("Sending RXON\n"
1162 "* with%s RXON_FILTER_ASSOC_MSK\n"
1163 "* channel = %d\n"
1164 "* bssid = %s\n",
1165 ((priv->staging_rxon.filter_flags &
1166 RXON_FILTER_ASSOC_MSK) ? "" : "out"),
1167 le16_to_cpu(priv->staging_rxon.channel),
1168 print_mac(mac, priv->staging_rxon.bssid_addr));
1169
1170 /* Apply the new configuration */
1171 rc = iwl3945_send_cmd_pdu(priv, REPLY_RXON,
1172 sizeof(struct iwl3945_rxon_cmd), &priv->staging_rxon);
1173 if (rc) {
1174 IWL_ERROR("Error setting new configuration (%d).\n", rc);
1175 return rc;
1176 }
1177
1178 memcpy(active_rxon, &priv->staging_rxon, sizeof(*active_rxon));
1179
1180 iwl3945_clear_stations_table(priv);
1181
1182 /* If we issue a new RXON command which required a tune then we must
1183 * send a new TXPOWER command or we won't be able to Tx any frames */
1184 rc = iwl3945_hw_reg_send_txpower(priv);
1185 if (rc) {
1186 IWL_ERROR("Error setting Tx power (%d).\n", rc);
1187 return rc;
1188 }
1189
1190 /* Add the broadcast address so we can send broadcast frames */
1191 if (iwl3945_add_station(priv, iwl3945_broadcast_addr, 0, 0) ==
1192 IWL_INVALID_STATION) {
1193 IWL_ERROR("Error adding BROADCAST address for transmit.\n");
1194 return -EIO;
1195 }
1196
1197 /* If we have set the ASSOC_MSK and we are in BSS mode then
1198 * add the IWL_AP_ID to the station rate table */
1199 if (iwl3945_is_associated(priv) &&
1200 (priv->iw_mode == IEEE80211_IF_TYPE_STA))
1201 if (iwl3945_add_station(priv, priv->active_rxon.bssid_addr, 1, 0)
1202 == IWL_INVALID_STATION) {
1203 IWL_ERROR("Error adding AP address for transmit.\n");
1204 return -EIO;
1205 }
1206
1207 /* Init the hardware's rate fallback order based on the
1208 * phymode */
1209 rc = iwl3945_init_hw_rate_table(priv);
1210 if (rc) {
1211 IWL_ERROR("Error setting HW rate table: %02X\n", rc);
1212 return -EIO;
1213 }
1214
1215 return 0;
1216 }
1217
1218 static int iwl3945_send_bt_config(struct iwl3945_priv *priv)
1219 {
1220 struct iwl3945_bt_cmd bt_cmd = {
1221 .flags = 3,
1222 .lead_time = 0xAA,
1223 .max_kill = 1,
1224 .kill_ack_mask = 0,
1225 .kill_cts_mask = 0,
1226 };
1227
1228 return iwl3945_send_cmd_pdu(priv, REPLY_BT_CONFIG,
1229 sizeof(struct iwl3945_bt_cmd), &bt_cmd);
1230 }
1231
1232 static int iwl3945_send_scan_abort(struct iwl3945_priv *priv)
1233 {
1234 int rc = 0;
1235 struct iwl3945_rx_packet *res;
1236 struct iwl3945_host_cmd cmd = {
1237 .id = REPLY_SCAN_ABORT_CMD,
1238 .meta.flags = CMD_WANT_SKB,
1239 };
1240
1241 /* If there isn't a scan actively going on in the hardware
1242 * then we are in between scan bands and not actually
1243 * actively scanning, so don't send the abort command */
1244 if (!test_bit(STATUS_SCAN_HW, &priv->status)) {
1245 clear_bit(STATUS_SCAN_ABORTING, &priv->status);
1246 return 0;
1247 }
1248
1249 rc = iwl3945_send_cmd_sync(priv, &cmd);
1250 if (rc) {
1251 clear_bit(STATUS_SCAN_ABORTING, &priv->status);
1252 return rc;
1253 }
1254
1255 res = (struct iwl3945_rx_packet *)cmd.meta.u.skb->data;
1256 if (res->u.status != CAN_ABORT_STATUS) {
1257 /* The scan abort will return 1 for success or
1258 * 2 for "failure". A failure condition can be
1259 * due to simply not being in an active scan which
1260 * can occur if we send the scan abort before we
1261 * the microcode has notified us that a scan is
1262 * completed. */
1263 IWL_DEBUG_INFO("SCAN_ABORT returned %d.\n", res->u.status);
1264 clear_bit(STATUS_SCAN_ABORTING, &priv->status);
1265 clear_bit(STATUS_SCAN_HW, &priv->status);
1266 }
1267
1268 dev_kfree_skb_any(cmd.meta.u.skb);
1269
1270 return rc;
1271 }
1272
1273 static int iwl3945_card_state_sync_callback(struct iwl3945_priv *priv,
1274 struct iwl3945_cmd *cmd,
1275 struct sk_buff *skb)
1276 {
1277 return 1;
1278 }
1279
1280 /*
1281 * CARD_STATE_CMD
1282 *
1283 * Use: Sets the device's internal card state to enable, disable, or halt
1284 *
1285 * When in the 'enable' state the card operates as normal.
1286 * When in the 'disable' state, the card enters into a low power mode.
1287 * When in the 'halt' state, the card is shut down and must be fully
1288 * restarted to come back on.
1289 */
1290 static int iwl3945_send_card_state(struct iwl3945_priv *priv, u32 flags, u8 meta_flag)
1291 {
1292 struct iwl3945_host_cmd cmd = {
1293 .id = REPLY_CARD_STATE_CMD,
1294 .len = sizeof(u32),
1295 .data = &flags,
1296 .meta.flags = meta_flag,
1297 };
1298
1299 if (meta_flag & CMD_ASYNC)
1300 cmd.meta.u.callback = iwl3945_card_state_sync_callback;
1301
1302 return iwl3945_send_cmd(priv, &cmd);
1303 }
1304
1305 static int iwl3945_add_sta_sync_callback(struct iwl3945_priv *priv,
1306 struct iwl3945_cmd *cmd, struct sk_buff *skb)
1307 {
1308 struct iwl3945_rx_packet *res = NULL;
1309
1310 if (!skb) {
1311 IWL_ERROR("Error: Response NULL in REPLY_ADD_STA.\n");
1312 return 1;
1313 }
1314
1315 res = (struct iwl3945_rx_packet *)skb->data;
1316 if (res->hdr.flags & IWL_CMD_FAILED_MSK) {
1317 IWL_ERROR("Bad return from REPLY_ADD_STA (0x%08X)\n",
1318 res->hdr.flags);
1319 return 1;
1320 }
1321
1322 switch (res->u.add_sta.status) {
1323 case ADD_STA_SUCCESS_MSK:
1324 break;
1325 default:
1326 break;
1327 }
1328
1329 /* We didn't cache the SKB; let the caller free it */
1330 return 1;
1331 }
1332
1333 int iwl3945_send_add_station(struct iwl3945_priv *priv,
1334 struct iwl3945_addsta_cmd *sta, u8 flags)
1335 {
1336 struct iwl3945_rx_packet *res = NULL;
1337 int rc = 0;
1338 struct iwl3945_host_cmd cmd = {
1339 .id = REPLY_ADD_STA,
1340 .len = sizeof(struct iwl3945_addsta_cmd),
1341 .meta.flags = flags,
1342 .data = sta,
1343 };
1344
1345 if (flags & CMD_ASYNC)
1346 cmd.meta.u.callback = iwl3945_add_sta_sync_callback;
1347 else
1348 cmd.meta.flags |= CMD_WANT_SKB;
1349
1350 rc = iwl3945_send_cmd(priv, &cmd);
1351
1352 if (rc || (flags & CMD_ASYNC))
1353 return rc;
1354
1355 res = (struct iwl3945_rx_packet *)cmd.meta.u.skb->data;
1356 if (res->hdr.flags & IWL_CMD_FAILED_MSK) {
1357 IWL_ERROR("Bad return from REPLY_ADD_STA (0x%08X)\n",
1358 res->hdr.flags);
1359 rc = -EIO;
1360 }
1361
1362 if (rc == 0) {
1363 switch (res->u.add_sta.status) {
1364 case ADD_STA_SUCCESS_MSK:
1365 IWL_DEBUG_INFO("REPLY_ADD_STA PASSED\n");
1366 break;
1367 default:
1368 rc = -EIO;
1369 IWL_WARNING("REPLY_ADD_STA failed\n");
1370 break;
1371 }
1372 }
1373
1374 priv->alloc_rxb_skb--;
1375 dev_kfree_skb_any(cmd.meta.u.skb);
1376
1377 return rc;
1378 }
1379
1380 static int iwl3945_update_sta_key_info(struct iwl3945_priv *priv,
1381 struct ieee80211_key_conf *keyconf,
1382 u8 sta_id)
1383 {
1384 unsigned long flags;
1385 __le16 key_flags = 0;
1386
1387 switch (keyconf->alg) {
1388 case ALG_CCMP:
1389 key_flags |= STA_KEY_FLG_CCMP;
1390 key_flags |= cpu_to_le16(
1391 keyconf->keyidx << STA_KEY_FLG_KEYID_POS);
1392 key_flags &= ~STA_KEY_FLG_INVALID;
1393 break;
1394 case ALG_TKIP:
1395 case ALG_WEP:
1396 default:
1397 return -EINVAL;
1398 }
1399 spin_lock_irqsave(&priv->sta_lock, flags);
1400 priv->stations[sta_id].keyinfo.alg = keyconf->alg;
1401 priv->stations[sta_id].keyinfo.keylen = keyconf->keylen;
1402 memcpy(priv->stations[sta_id].keyinfo.key, keyconf->key,
1403 keyconf->keylen);
1404
1405 memcpy(priv->stations[sta_id].sta.key.key, keyconf->key,
1406 keyconf->keylen);
1407 priv->stations[sta_id].sta.key.key_flags = key_flags;
1408 priv->stations[sta_id].sta.sta.modify_mask = STA_MODIFY_KEY_MASK;
1409 priv->stations[sta_id].sta.mode = STA_CONTROL_MODIFY_MSK;
1410
1411 spin_unlock_irqrestore(&priv->sta_lock, flags);
1412
1413 IWL_DEBUG_INFO("hwcrypto: modify ucode station key info\n");
1414 iwl3945_send_add_station(priv, &priv->stations[sta_id].sta, 0);
1415 return 0;
1416 }
1417
1418 static int iwl3945_clear_sta_key_info(struct iwl3945_priv *priv, u8 sta_id)
1419 {
1420 unsigned long flags;
1421
1422 spin_lock_irqsave(&priv->sta_lock, flags);
1423 memset(&priv->stations[sta_id].keyinfo, 0, sizeof(struct iwl3945_hw_key));
1424 memset(&priv->stations[sta_id].sta.key, 0, sizeof(struct iwl3945_keyinfo));
1425 priv->stations[sta_id].sta.key.key_flags = STA_KEY_FLG_NO_ENC;
1426 priv->stations[sta_id].sta.sta.modify_mask = STA_MODIFY_KEY_MASK;
1427 priv->stations[sta_id].sta.mode = STA_CONTROL_MODIFY_MSK;
1428 spin_unlock_irqrestore(&priv->sta_lock, flags);
1429
1430 IWL_DEBUG_INFO("hwcrypto: clear ucode station key info\n");
1431 iwl3945_send_add_station(priv, &priv->stations[sta_id].sta, 0);
1432 return 0;
1433 }
1434
1435 static void iwl3945_clear_free_frames(struct iwl3945_priv *priv)
1436 {
1437 struct list_head *element;
1438
1439 IWL_DEBUG_INFO("%d frames on pre-allocated heap on clear.\n",
1440 priv->frames_count);
1441
1442 while (!list_empty(&priv->free_frames)) {
1443 element = priv->free_frames.next;
1444 list_del(element);
1445 kfree(list_entry(element, struct iwl3945_frame, list));
1446 priv->frames_count--;
1447 }
1448
1449 if (priv->frames_count) {
1450 IWL_WARNING("%d frames still in use. Did we lose one?\n",
1451 priv->frames_count);
1452 priv->frames_count = 0;
1453 }
1454 }
1455
1456 static struct iwl3945_frame *iwl3945_get_free_frame(struct iwl3945_priv *priv)
1457 {
1458 struct iwl3945_frame *frame;
1459 struct list_head *element;
1460 if (list_empty(&priv->free_frames)) {
1461 frame = kzalloc(sizeof(*frame), GFP_KERNEL);
1462 if (!frame) {
1463 IWL_ERROR("Could not allocate frame!\n");
1464 return NULL;
1465 }
1466
1467 priv->frames_count++;
1468 return frame;
1469 }
1470
1471 element = priv->free_frames.next;
1472 list_del(element);
1473 return list_entry(element, struct iwl3945_frame, list);
1474 }
1475
1476 static void iwl3945_free_frame(struct iwl3945_priv *priv, struct iwl3945_frame *frame)
1477 {
1478 memset(frame, 0, sizeof(*frame));
1479 list_add(&frame->list, &priv->free_frames);
1480 }
1481
1482 unsigned int iwl3945_fill_beacon_frame(struct iwl3945_priv *priv,
1483 struct ieee80211_hdr *hdr,
1484 const u8 *dest, int left)
1485 {
1486
1487 if (!iwl3945_is_associated(priv) || !priv->ibss_beacon ||
1488 ((priv->iw_mode != IEEE80211_IF_TYPE_IBSS) &&
1489 (priv->iw_mode != IEEE80211_IF_TYPE_AP)))
1490 return 0;
1491
1492 if (priv->ibss_beacon->len > left)
1493 return 0;
1494
1495 memcpy(hdr, priv->ibss_beacon->data, priv->ibss_beacon->len);
1496
1497 return priv->ibss_beacon->len;
1498 }
1499
1500 static int iwl3945_rate_index_from_plcp(int plcp)
1501 {
1502 int i = 0;
1503
1504 for (i = 0; i < IWL_RATE_COUNT; i++)
1505 if (iwl3945_rates[i].plcp == plcp)
1506 return i;
1507 return -1;
1508 }
1509
1510 static u8 iwl3945_rate_get_lowest_plcp(int rate_mask)
1511 {
1512 u8 i;
1513
1514 for (i = IWL_RATE_1M_INDEX; i != IWL_RATE_INVALID;
1515 i = iwl3945_rates[i].next_ieee) {
1516 if (rate_mask & (1 << i))
1517 return iwl3945_rates[i].plcp;
1518 }
1519
1520 return IWL_RATE_INVALID;
1521 }
1522
1523 static int iwl3945_send_beacon_cmd(struct iwl3945_priv *priv)
1524 {
1525 struct iwl3945_frame *frame;
1526 unsigned int frame_size;
1527 int rc;
1528 u8 rate;
1529
1530 frame = iwl3945_get_free_frame(priv);
1531
1532 if (!frame) {
1533 IWL_ERROR("Could not obtain free frame buffer for beacon "
1534 "command.\n");
1535 return -ENOMEM;
1536 }
1537
1538 if (!(priv->staging_rxon.flags & RXON_FLG_BAND_24G_MSK)) {
1539 rate = iwl3945_rate_get_lowest_plcp(priv->active_rate_basic &
1540 0xFF0);
1541 if (rate == IWL_INVALID_RATE)
1542 rate = IWL_RATE_6M_PLCP;
1543 } else {
1544 rate = iwl3945_rate_get_lowest_plcp(priv->active_rate_basic & 0xF);
1545 if (rate == IWL_INVALID_RATE)
1546 rate = IWL_RATE_1M_PLCP;
1547 }
1548
1549 frame_size = iwl3945_hw_get_beacon_cmd(priv, frame, rate);
1550
1551 rc = iwl3945_send_cmd_pdu(priv, REPLY_TX_BEACON, frame_size,
1552 &frame->u.cmd[0]);
1553
1554 iwl3945_free_frame(priv, frame);
1555
1556 return rc;
1557 }
1558
1559 /******************************************************************************
1560 *
1561 * EEPROM related functions
1562 *
1563 ******************************************************************************/
1564
1565 static void get_eeprom_mac(struct iwl3945_priv *priv, u8 *mac)
1566 {
1567 memcpy(mac, priv->eeprom.mac_address, 6);
1568 }
1569
1570 /**
1571 * iwl3945_eeprom_init - read EEPROM contents
1572 *
1573 * Load the EEPROM contents from adapter into priv->eeprom
1574 *
1575 * NOTE: This routine uses the non-debug IO access functions.
1576 */
1577 int iwl3945_eeprom_init(struct iwl3945_priv *priv)
1578 {
1579 u16 *e = (u16 *)&priv->eeprom;
1580 u32 gp = iwl3945_read32(priv, CSR_EEPROM_GP);
1581 u32 r;
1582 int sz = sizeof(priv->eeprom);
1583 int rc;
1584 int i;
1585 u16 addr;
1586
1587 /* The EEPROM structure has several padding buffers within it
1588 * and when adding new EEPROM maps is subject to programmer errors
1589 * which may be very difficult to identify without explicitly
1590 * checking the resulting size of the eeprom map. */
1591 BUILD_BUG_ON(sizeof(priv->eeprom) != IWL_EEPROM_IMAGE_SIZE);
1592
1593 if ((gp & CSR_EEPROM_GP_VALID_MSK) == CSR_EEPROM_GP_BAD_SIGNATURE) {
1594 IWL_ERROR("EEPROM not found, EEPROM_GP=0x%08x", gp);
1595 return -ENOENT;
1596 }
1597
1598 /* Make sure driver (instead of uCode) is allowed to read EEPROM */
1599 rc = iwl3945_eeprom_acquire_semaphore(priv);
1600 if (rc < 0) {
1601 IWL_ERROR("Failed to acquire EEPROM semaphore.\n");
1602 return -ENOENT;
1603 }
1604
1605 /* eeprom is an array of 16bit values */
1606 for (addr = 0; addr < sz; addr += sizeof(u16)) {
1607 _iwl3945_write32(priv, CSR_EEPROM_REG, addr << 1);
1608 _iwl3945_clear_bit(priv, CSR_EEPROM_REG, CSR_EEPROM_REG_BIT_CMD);
1609
1610 for (i = 0; i < IWL_EEPROM_ACCESS_TIMEOUT;
1611 i += IWL_EEPROM_ACCESS_DELAY) {
1612 r = _iwl3945_read_direct32(priv, CSR_EEPROM_REG);
1613 if (r & CSR_EEPROM_REG_READ_VALID_MSK)
1614 break;
1615 udelay(IWL_EEPROM_ACCESS_DELAY);
1616 }
1617
1618 if (!(r & CSR_EEPROM_REG_READ_VALID_MSK)) {
1619 IWL_ERROR("Time out reading EEPROM[%d]", addr);
1620 return -ETIMEDOUT;
1621 }
1622 e[addr / 2] = le16_to_cpu(r >> 16);
1623 }
1624
1625 return 0;
1626 }
1627
1628 /******************************************************************************
1629 *
1630 * Misc. internal state and helper functions
1631 *
1632 ******************************************************************************/
1633 #ifdef CONFIG_IWL3945_DEBUG
1634
1635 /**
1636 * iwl3945_report_frame - dump frame to syslog during debug sessions
1637 *
1638 * You may hack this function to show different aspects of received frames,
1639 * including selective frame dumps.
1640 * group100 parameter selects whether to show 1 out of 100 good frames.
1641 */
1642 void iwl3945_report_frame(struct iwl3945_priv *priv,
1643 struct iwl3945_rx_packet *pkt,
1644 struct ieee80211_hdr *header, int group100)
1645 {
1646 u32 to_us;
1647 u32 print_summary = 0;
1648 u32 print_dump = 0; /* set to 1 to dump all frames' contents */
1649 u32 hundred = 0;
1650 u32 dataframe = 0;
1651 u16 fc;
1652 u16 seq_ctl;
1653 u16 channel;
1654 u16 phy_flags;
1655 int rate_sym;
1656 u16 length;
1657 u16 status;
1658 u16 bcn_tmr;
1659 u32 tsf_low;
1660 u64 tsf;
1661 u8 rssi;
1662 u8 agc;
1663 u16 sig_avg;
1664 u16 noise_diff;
1665 struct iwl3945_rx_frame_stats *rx_stats = IWL_RX_STATS(pkt);
1666 struct iwl3945_rx_frame_hdr *rx_hdr = IWL_RX_HDR(pkt);
1667 struct iwl3945_rx_frame_end *rx_end = IWL_RX_END(pkt);
1668 u8 *data = IWL_RX_DATA(pkt);
1669
1670 /* MAC header */
1671 fc = le16_to_cpu(header->frame_control);
1672 seq_ctl = le16_to_cpu(header->seq_ctrl);
1673
1674 /* metadata */
1675 channel = le16_to_cpu(rx_hdr->channel);
1676 phy_flags = le16_to_cpu(rx_hdr->phy_flags);
1677 rate_sym = rx_hdr->rate;
1678 length = le16_to_cpu(rx_hdr->len);
1679
1680 /* end-of-frame status and timestamp */
1681 status = le32_to_cpu(rx_end->status);
1682 bcn_tmr = le32_to_cpu(rx_end->beacon_timestamp);
1683 tsf_low = le64_to_cpu(rx_end->timestamp) & 0x0ffffffff;
1684 tsf = le64_to_cpu(rx_end->timestamp);
1685
1686 /* signal statistics */
1687 rssi = rx_stats->rssi;
1688 agc = rx_stats->agc;
1689 sig_avg = le16_to_cpu(rx_stats->sig_avg);
1690 noise_diff = le16_to_cpu(rx_stats->noise_diff);
1691
1692 to_us = !compare_ether_addr(header->addr1, priv->mac_addr);
1693
1694 /* if data frame is to us and all is good,
1695 * (optionally) print summary for only 1 out of every 100 */
1696 if (to_us && (fc & ~IEEE80211_FCTL_PROTECTED) ==
1697 (IEEE80211_FCTL_FROMDS | IEEE80211_FTYPE_DATA)) {
1698 dataframe = 1;
1699 if (!group100)
1700 print_summary = 1; /* print each frame */
1701 else if (priv->framecnt_to_us < 100) {
1702 priv->framecnt_to_us++;
1703 print_summary = 0;
1704 } else {
1705 priv->framecnt_to_us = 0;
1706 print_summary = 1;
1707 hundred = 1;
1708 }
1709 } else {
1710 /* print summary for all other frames */
1711 print_summary = 1;
1712 }
1713
1714 if (print_summary) {
1715 char *title;
1716 u32 rate;
1717
1718 if (hundred)
1719 title = "100Frames";
1720 else if (fc & IEEE80211_FCTL_RETRY)
1721 title = "Retry";
1722 else if (ieee80211_is_assoc_response(fc))
1723 title = "AscRsp";
1724 else if (ieee80211_is_reassoc_response(fc))
1725 title = "RasRsp";
1726 else if (ieee80211_is_probe_response(fc)) {
1727 title = "PrbRsp";
1728 print_dump = 1; /* dump frame contents */
1729 } else if (ieee80211_is_beacon(fc)) {
1730 title = "Beacon";
1731 print_dump = 1; /* dump frame contents */
1732 } else if (ieee80211_is_atim(fc))
1733 title = "ATIM";
1734 else if (ieee80211_is_auth(fc))
1735 title = "Auth";
1736 else if (ieee80211_is_deauth(fc))
1737 title = "DeAuth";
1738 else if (ieee80211_is_disassoc(fc))
1739 title = "DisAssoc";
1740 else
1741 title = "Frame";
1742
1743 rate = iwl3945_rate_index_from_plcp(rate_sym);
1744 if (rate == -1)
1745 rate = 0;
1746 else
1747 rate = iwl3945_rates[rate].ieee / 2;
1748
1749 /* print frame summary.
1750 * MAC addresses show just the last byte (for brevity),
1751 * but you can hack it to show more, if you'd like to. */
1752 if (dataframe)
1753 IWL_DEBUG_RX("%s: mhd=0x%04x, dst=0x%02x, "
1754 "len=%u, rssi=%d, chnl=%d, rate=%u, \n",
1755 title, fc, header->addr1[5],
1756 length, rssi, channel, rate);
1757 else {
1758 /* src/dst addresses assume managed mode */
1759 IWL_DEBUG_RX("%s: 0x%04x, dst=0x%02x, "
1760 "src=0x%02x, rssi=%u, tim=%lu usec, "
1761 "phy=0x%02x, chnl=%d\n",
1762 title, fc, header->addr1[5],
1763 header->addr3[5], rssi,
1764 tsf_low - priv->scan_start_tsf,
1765 phy_flags, channel);
1766 }
1767 }
1768 if (print_dump)
1769 iwl3945_print_hex_dump(IWL_DL_RX, data, length);
1770 }
1771 #endif
1772
1773 static void iwl3945_unset_hw_setting(struct iwl3945_priv *priv)
1774 {
1775 if (priv->hw_setting.shared_virt)
1776 pci_free_consistent(priv->pci_dev,
1777 sizeof(struct iwl3945_shared),
1778 priv->hw_setting.shared_virt,
1779 priv->hw_setting.shared_phys);
1780 }
1781
1782 /**
1783 * iwl3945_supported_rate_to_ie - fill in the supported rate in IE field
1784 *
1785 * return : set the bit for each supported rate insert in ie
1786 */
1787 static u16 iwl3945_supported_rate_to_ie(u8 *ie, u16 supported_rate,
1788 u16 basic_rate, int *left)
1789 {
1790 u16 ret_rates = 0, bit;
1791 int i;
1792 u8 *cnt = ie;
1793 u8 *rates = ie + 1;
1794
1795 for (bit = 1, i = 0; i < IWL_RATE_COUNT; i++, bit <<= 1) {
1796 if (bit & supported_rate) {
1797 ret_rates |= bit;
1798 rates[*cnt] = iwl3945_rates[i].ieee |
1799 ((bit & basic_rate) ? 0x80 : 0x00);
1800 (*cnt)++;
1801 (*left)--;
1802 if ((*left <= 0) ||
1803 (*cnt >= IWL_SUPPORTED_RATES_IE_LEN))
1804 break;
1805 }
1806 }
1807
1808 return ret_rates;
1809 }
1810
1811 /**
1812 * iwl3945_fill_probe_req - fill in all required fields and IE for probe request
1813 */
1814 static u16 iwl3945_fill_probe_req(struct iwl3945_priv *priv,
1815 struct ieee80211_mgmt *frame,
1816 int left, int is_direct)
1817 {
1818 int len = 0;
1819 u8 *pos = NULL;
1820 u16 active_rates, ret_rates, cck_rates;
1821
1822 /* Make sure there is enough space for the probe request,
1823 * two mandatory IEs and the data */
1824 left -= 24;
1825 if (left < 0)
1826 return 0;
1827 len += 24;
1828
1829 frame->frame_control = cpu_to_le16(IEEE80211_STYPE_PROBE_REQ);
1830 memcpy(frame->da, iwl3945_broadcast_addr, ETH_ALEN);
1831 memcpy(frame->sa, priv->mac_addr, ETH_ALEN);
1832 memcpy(frame->bssid, iwl3945_broadcast_addr, ETH_ALEN);
1833 frame->seq_ctrl = 0;
1834
1835 /* fill in our indirect SSID IE */
1836 /* ...next IE... */
1837
1838 left -= 2;
1839 if (left < 0)
1840 return 0;
1841 len += 2;
1842 pos = &(frame->u.probe_req.variable[0]);
1843 *pos++ = WLAN_EID_SSID;
1844 *pos++ = 0;
1845
1846 /* fill in our direct SSID IE... */
1847 if (is_direct) {
1848 /* ...next IE... */
1849 left -= 2 + priv->essid_len;
1850 if (left < 0)
1851 return 0;
1852 /* ... fill it in... */
1853 *pos++ = WLAN_EID_SSID;
1854 *pos++ = priv->essid_len;
1855 memcpy(pos, priv->essid, priv->essid_len);
1856 pos += priv->essid_len;
1857 len += 2 + priv->essid_len;
1858 }
1859
1860 /* fill in supported rate */
1861 /* ...next IE... */
1862 left -= 2;
1863 if (left < 0)
1864 return 0;
1865
1866 /* ... fill it in... */
1867 *pos++ = WLAN_EID_SUPP_RATES;
1868 *pos = 0;
1869
1870 priv->active_rate = priv->rates_mask;
1871 active_rates = priv->active_rate;
1872 priv->active_rate_basic = priv->rates_mask & IWL_BASIC_RATES_MASK;
1873
1874 cck_rates = IWL_CCK_RATES_MASK & active_rates;
1875 ret_rates = iwl3945_supported_rate_to_ie(pos, cck_rates,
1876 priv->active_rate_basic, &left);
1877 active_rates &= ~ret_rates;
1878
1879 ret_rates = iwl3945_supported_rate_to_ie(pos, active_rates,
1880 priv->active_rate_basic, &left);
1881 active_rates &= ~ret_rates;
1882
1883 len += 2 + *pos;
1884 pos += (*pos) + 1;
1885 if (active_rates == 0)
1886 goto fill_end;
1887
1888 /* fill in supported extended rate */
1889 /* ...next IE... */
1890 left -= 2;
1891 if (left < 0)
1892 return 0;
1893 /* ... fill it in... */
1894 *pos++ = WLAN_EID_EXT_SUPP_RATES;
1895 *pos = 0;
1896 iwl3945_supported_rate_to_ie(pos, active_rates,
1897 priv->active_rate_basic, &left);
1898 if (*pos > 0)
1899 len += 2 + *pos;
1900
1901 fill_end:
1902 return (u16)len;
1903 }
1904
1905 /*
1906 * QoS support
1907 */
1908 #ifdef CONFIG_IWL3945_QOS
1909 static int iwl3945_send_qos_params_command(struct iwl3945_priv *priv,
1910 struct iwl3945_qosparam_cmd *qos)
1911 {
1912
1913 return iwl3945_send_cmd_pdu(priv, REPLY_QOS_PARAM,
1914 sizeof(struct iwl3945_qosparam_cmd), qos);
1915 }
1916
1917 static void iwl3945_reset_qos(struct iwl3945_priv *priv)
1918 {
1919 u16 cw_min = 15;
1920 u16 cw_max = 1023;
1921 u8 aifs = 2;
1922 u8 is_legacy = 0;
1923 unsigned long flags;
1924 int i;
1925
1926 spin_lock_irqsave(&priv->lock, flags);
1927 priv->qos_data.qos_active = 0;
1928
1929 if (priv->iw_mode == IEEE80211_IF_TYPE_IBSS) {
1930 if (priv->qos_data.qos_enable)
1931 priv->qos_data.qos_active = 1;
1932 if (!(priv->active_rate & 0xfff0)) {
1933 cw_min = 31;
1934 is_legacy = 1;
1935 }
1936 } else if (priv->iw_mode == IEEE80211_IF_TYPE_AP) {
1937 if (priv->qos_data.qos_enable)
1938 priv->qos_data.qos_active = 1;
1939 } else if (!(priv->staging_rxon.flags & RXON_FLG_SHORT_SLOT_MSK)) {
1940 cw_min = 31;
1941 is_legacy = 1;
1942 }
1943
1944 if (priv->qos_data.qos_active)
1945 aifs = 3;
1946
1947 priv->qos_data.def_qos_parm.ac[0].cw_min = cpu_to_le16(cw_min);
1948 priv->qos_data.def_qos_parm.ac[0].cw_max = cpu_to_le16(cw_max);
1949 priv->qos_data.def_qos_parm.ac[0].aifsn = aifs;
1950 priv->qos_data.def_qos_parm.ac[0].edca_txop = 0;
1951 priv->qos_data.def_qos_parm.ac[0].reserved1 = 0;
1952
1953 if (priv->qos_data.qos_active) {
1954 i = 1;
1955 priv->qos_data.def_qos_parm.ac[i].cw_min = cpu_to_le16(cw_min);
1956 priv->qos_data.def_qos_parm.ac[i].cw_max = cpu_to_le16(cw_max);
1957 priv->qos_data.def_qos_parm.ac[i].aifsn = 7;
1958 priv->qos_data.def_qos_parm.ac[i].edca_txop = 0;
1959 priv->qos_data.def_qos_parm.ac[i].reserved1 = 0;
1960
1961 i = 2;
1962 priv->qos_data.def_qos_parm.ac[i].cw_min =
1963 cpu_to_le16((cw_min + 1) / 2 - 1);
1964 priv->qos_data.def_qos_parm.ac[i].cw_max =
1965 cpu_to_le16(cw_max);
1966 priv->qos_data.def_qos_parm.ac[i].aifsn = 2;
1967 if (is_legacy)
1968 priv->qos_data.def_qos_parm.ac[i].edca_txop =
1969 cpu_to_le16(6016);
1970 else
1971 priv->qos_data.def_qos_parm.ac[i].edca_txop =
1972 cpu_to_le16(3008);
1973 priv->qos_data.def_qos_parm.ac[i].reserved1 = 0;
1974
1975 i = 3;
1976 priv->qos_data.def_qos_parm.ac[i].cw_min =
1977 cpu_to_le16((cw_min + 1) / 4 - 1);
1978 priv->qos_data.def_qos_parm.ac[i].cw_max =
1979 cpu_to_le16((cw_max + 1) / 2 - 1);
1980 priv->qos_data.def_qos_parm.ac[i].aifsn = 2;
1981 priv->qos_data.def_qos_parm.ac[i].reserved1 = 0;
1982 if (is_legacy)
1983 priv->qos_data.def_qos_parm.ac[i].edca_txop =
1984 cpu_to_le16(3264);
1985 else
1986 priv->qos_data.def_qos_parm.ac[i].edca_txop =
1987 cpu_to_le16(1504);
1988 } else {
1989 for (i = 1; i < 4; i++) {
1990 priv->qos_data.def_qos_parm.ac[i].cw_min =
1991 cpu_to_le16(cw_min);
1992 priv->qos_data.def_qos_parm.ac[i].cw_max =
1993 cpu_to_le16(cw_max);
1994 priv->qos_data.def_qos_parm.ac[i].aifsn = aifs;
1995 priv->qos_data.def_qos_parm.ac[i].edca_txop = 0;
1996 priv->qos_data.def_qos_parm.ac[i].reserved1 = 0;
1997 }
1998 }
1999 IWL_DEBUG_QOS("set QoS to default \n");
2000
2001 spin_unlock_irqrestore(&priv->lock, flags);
2002 }
2003
2004 static void iwl3945_activate_qos(struct iwl3945_priv *priv, u8 force)
2005 {
2006 unsigned long flags;
2007
2008 if (test_bit(STATUS_EXIT_PENDING, &priv->status))
2009 return;
2010
2011 if (!priv->qos_data.qos_enable)
2012 return;
2013
2014 spin_lock_irqsave(&priv->lock, flags);
2015 priv->qos_data.def_qos_parm.qos_flags = 0;
2016
2017 if (priv->qos_data.qos_cap.q_AP.queue_request &&
2018 !priv->qos_data.qos_cap.q_AP.txop_request)
2019 priv->qos_data.def_qos_parm.qos_flags |=
2020 QOS_PARAM_FLG_TXOP_TYPE_MSK;
2021
2022 if (priv->qos_data.qos_active)
2023 priv->qos_data.def_qos_parm.qos_flags |=
2024 QOS_PARAM_FLG_UPDATE_EDCA_MSK;
2025
2026 spin_unlock_irqrestore(&priv->lock, flags);
2027
2028 if (force || iwl3945_is_associated(priv)) {
2029 IWL_DEBUG_QOS("send QoS cmd with Qos active %d \n",
2030 priv->qos_data.qos_active);
2031
2032 iwl3945_send_qos_params_command(priv,
2033 &(priv->qos_data.def_qos_parm));
2034 }
2035 }
2036
2037 #endif /* CONFIG_IWL3945_QOS */
2038 /*
2039 * Power management (not Tx power!) functions
2040 */
2041 #define MSEC_TO_USEC 1024
2042
2043 #define NOSLP __constant_cpu_to_le32(0)
2044 #define SLP IWL_POWER_DRIVER_ALLOW_SLEEP_MSK
2045 #define SLP_TIMEOUT(T) __constant_cpu_to_le32((T) * MSEC_TO_USEC)
2046 #define SLP_VEC(X0, X1, X2, X3, X4) {__constant_cpu_to_le32(X0), \
2047 __constant_cpu_to_le32(X1), \
2048 __constant_cpu_to_le32(X2), \
2049 __constant_cpu_to_le32(X3), \
2050 __constant_cpu_to_le32(X4)}
2051
2052
2053 /* default power management (not Tx power) table values */
2054 /* for tim 0-10 */
2055 static struct iwl3945_power_vec_entry range_0[IWL_POWER_AC] = {
2056 {{NOSLP, SLP_TIMEOUT(0), SLP_TIMEOUT(0), SLP_VEC(0, 0, 0, 0, 0)}, 0},
2057 {{SLP, SLP_TIMEOUT(200), SLP_TIMEOUT(500), SLP_VEC(1, 2, 3, 4, 4)}, 0},
2058 {{SLP, SLP_TIMEOUT(200), SLP_TIMEOUT(300), SLP_VEC(2, 4, 6, 7, 7)}, 0},
2059 {{SLP, SLP_TIMEOUT(50), SLP_TIMEOUT(100), SLP_VEC(2, 6, 9, 9, 10)}, 0},
2060 {{SLP, SLP_TIMEOUT(50), SLP_TIMEOUT(25), SLP_VEC(2, 7, 9, 9, 10)}, 1},
2061 {{SLP, SLP_TIMEOUT(25), SLP_TIMEOUT(25), SLP_VEC(4, 7, 10, 10, 10)}, 1}
2062 };
2063
2064 /* for tim > 10 */
2065 static struct iwl3945_power_vec_entry range_1[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),
2068 SLP_VEC(1, 2, 3, 4, 0xFF)}, 0},
2069 {{SLP, SLP_TIMEOUT(200), SLP_TIMEOUT(300),
2070 SLP_VEC(2, 4, 6, 7, 0xFF)}, 0},
2071 {{SLP, SLP_TIMEOUT(50), SLP_TIMEOUT(100),
2072 SLP_VEC(2, 6, 9, 9, 0xFF)}, 0},
2073 {{SLP, SLP_TIMEOUT(50), SLP_TIMEOUT(25), SLP_VEC(2, 7, 9, 9, 0xFF)}, 0},
2074 {{SLP, SLP_TIMEOUT(25), SLP_TIMEOUT(25),
2075 SLP_VEC(4, 7, 10, 10, 0xFF)}, 0}
2076 };
2077
2078 int iwl3945_power_init_handle(struct iwl3945_priv *priv)
2079 {
2080 int rc = 0, i;
2081 struct iwl3945_power_mgr *pow_data;
2082 int size = sizeof(struct iwl3945_power_vec_entry) * IWL_POWER_AC;
2083 u16 pci_pm;
2084
2085 IWL_DEBUG_POWER("Initialize power \n");
2086
2087 pow_data = &(priv->power_data);
2088
2089 memset(pow_data, 0, sizeof(*pow_data));
2090
2091 pow_data->active_index = IWL_POWER_RANGE_0;
2092 pow_data->dtim_val = 0xffff;
2093
2094 memcpy(&pow_data->pwr_range_0[0], &range_0[0], size);
2095 memcpy(&pow_data->pwr_range_1[0], &range_1[0], size);
2096
2097 rc = pci_read_config_word(priv->pci_dev, PCI_LINK_CTRL, &pci_pm);
2098 if (rc != 0)
2099 return 0;
2100 else {
2101 struct iwl3945_powertable_cmd *cmd;
2102
2103 IWL_DEBUG_POWER("adjust power command flags\n");
2104
2105 for (i = 0; i < IWL_POWER_AC; i++) {
2106 cmd = &pow_data->pwr_range_0[i].cmd;
2107
2108 if (pci_pm & 0x1)
2109 cmd->flags &= ~IWL_POWER_PCI_PM_MSK;
2110 else
2111 cmd->flags |= IWL_POWER_PCI_PM_MSK;
2112 }
2113 }
2114 return rc;
2115 }
2116
2117 static int iwl3945_update_power_cmd(struct iwl3945_priv *priv,
2118 struct iwl3945_powertable_cmd *cmd, u32 mode)
2119 {
2120 int rc = 0, i;
2121 u8 skip;
2122 u32 max_sleep = 0;
2123 struct iwl3945_power_vec_entry *range;
2124 u8 period = 0;
2125 struct iwl3945_power_mgr *pow_data;
2126
2127 if (mode > IWL_POWER_INDEX_5) {
2128 IWL_DEBUG_POWER("Error invalid power mode \n");
2129 return -1;
2130 }
2131 pow_data = &(priv->power_data);
2132
2133 if (pow_data->active_index == IWL_POWER_RANGE_0)
2134 range = &pow_data->pwr_range_0[0];
2135 else
2136 range = &pow_data->pwr_range_1[1];
2137
2138 memcpy(cmd, &range[mode].cmd, sizeof(struct iwl3945_powertable_cmd));
2139
2140 #ifdef IWL_MAC80211_DISABLE
2141 if (priv->assoc_network != NULL) {
2142 unsigned long flags;
2143
2144 period = priv->assoc_network->tim.tim_period;
2145 }
2146 #endif /*IWL_MAC80211_DISABLE */
2147 skip = range[mode].no_dtim;
2148
2149 if (period == 0) {
2150 period = 1;
2151 skip = 0;
2152 }
2153
2154 if (skip == 0) {
2155 max_sleep = period;
2156 cmd->flags &= ~IWL_POWER_SLEEP_OVER_DTIM_MSK;
2157 } else {
2158 __le32 slp_itrvl = cmd->sleep_interval[IWL_POWER_VEC_SIZE - 1];
2159 max_sleep = (le32_to_cpu(slp_itrvl) / period) * period;
2160 cmd->flags |= IWL_POWER_SLEEP_OVER_DTIM_MSK;
2161 }
2162
2163 for (i = 0; i < IWL_POWER_VEC_SIZE; i++) {
2164 if (le32_to_cpu(cmd->sleep_interval[i]) > max_sleep)
2165 cmd->sleep_interval[i] = cpu_to_le32(max_sleep);
2166 }
2167
2168 IWL_DEBUG_POWER("Flags value = 0x%08X\n", cmd->flags);
2169 IWL_DEBUG_POWER("Tx timeout = %u\n", le32_to_cpu(cmd->tx_data_timeout));
2170 IWL_DEBUG_POWER("Rx timeout = %u\n", le32_to_cpu(cmd->rx_data_timeout));
2171 IWL_DEBUG_POWER("Sleep interval vector = { %d , %d , %d , %d , %d }\n",
2172 le32_to_cpu(cmd->sleep_interval[0]),
2173 le32_to_cpu(cmd->sleep_interval[1]),
2174 le32_to_cpu(cmd->sleep_interval[2]),
2175 le32_to_cpu(cmd->sleep_interval[3]),
2176 le32_to_cpu(cmd->sleep_interval[4]));
2177
2178 return rc;
2179 }
2180
2181 static int iwl3945_send_power_mode(struct iwl3945_priv *priv, u32 mode)
2182 {
2183 u32 uninitialized_var(final_mode);
2184 int rc;
2185 struct iwl3945_powertable_cmd cmd;
2186
2187 /* If on battery, set to 3,
2188 * if plugged into AC power, set to CAM ("continuously aware mode"),
2189 * else user level */
2190 switch (mode) {
2191 case IWL_POWER_BATTERY:
2192 final_mode = IWL_POWER_INDEX_3;
2193 break;
2194 case IWL_POWER_AC:
2195 final_mode = IWL_POWER_MODE_CAM;
2196 break;
2197 default:
2198 final_mode = mode;
2199 break;
2200 }
2201
2202 iwl3945_update_power_cmd(priv, &cmd, final_mode);
2203
2204 rc = iwl3945_send_cmd_pdu(priv, POWER_TABLE_CMD, sizeof(cmd), &cmd);
2205
2206 if (final_mode == IWL_POWER_MODE_CAM)
2207 clear_bit(STATUS_POWER_PMI, &priv->status);
2208 else
2209 set_bit(STATUS_POWER_PMI, &priv->status);
2210
2211 return rc;
2212 }
2213
2214 int iwl3945_is_network_packet(struct iwl3945_priv *priv, struct ieee80211_hdr *header)
2215 {
2216 /* Filter incoming packets to determine if they are targeted toward
2217 * this network, discarding packets coming from ourselves */
2218 switch (priv->iw_mode) {
2219 case IEEE80211_IF_TYPE_IBSS: /* Header: Dest. | Source | BSSID */
2220 /* packets from our adapter are dropped (echo) */
2221 if (!compare_ether_addr(header->addr2, priv->mac_addr))
2222 return 0;
2223 /* {broad,multi}cast packets to our IBSS go through */
2224 if (is_multicast_ether_addr(header->addr1))
2225 return !compare_ether_addr(header->addr3, priv->bssid);
2226 /* packets to our adapter go through */
2227 return !compare_ether_addr(header->addr1, priv->mac_addr);
2228 case IEEE80211_IF_TYPE_STA: /* Header: Dest. | AP{BSSID} | Source */
2229 /* packets from our adapter are dropped (echo) */
2230 if (!compare_ether_addr(header->addr3, priv->mac_addr))
2231 return 0;
2232 /* {broad,multi}cast packets to our BSS go through */
2233 if (is_multicast_ether_addr(header->addr1))
2234 return !compare_ether_addr(header->addr2, priv->bssid);
2235 /* packets to our adapter go through */
2236 return !compare_ether_addr(header->addr1, priv->mac_addr);
2237 }
2238
2239 return 1;
2240 }
2241
2242 #define TX_STATUS_ENTRY(x) case TX_STATUS_FAIL_ ## x: return #x
2243
2244 static const char *iwl3945_get_tx_fail_reason(u32 status)
2245 {
2246 switch (status & TX_STATUS_MSK) {
2247 case TX_STATUS_SUCCESS:
2248 return "SUCCESS";
2249 TX_STATUS_ENTRY(SHORT_LIMIT);
2250 TX_STATUS_ENTRY(LONG_LIMIT);
2251 TX_STATUS_ENTRY(FIFO_UNDERRUN);
2252 TX_STATUS_ENTRY(MGMNT_ABORT);
2253 TX_STATUS_ENTRY(NEXT_FRAG);
2254 TX_STATUS_ENTRY(LIFE_EXPIRE);
2255 TX_STATUS_ENTRY(DEST_PS);
2256 TX_STATUS_ENTRY(ABORTED);
2257 TX_STATUS_ENTRY(BT_RETRY);
2258 TX_STATUS_ENTRY(STA_INVALID);
2259 TX_STATUS_ENTRY(FRAG_DROPPED);
2260 TX_STATUS_ENTRY(TID_DISABLE);
2261 TX_STATUS_ENTRY(FRAME_FLUSHED);
2262 TX_STATUS_ENTRY(INSUFFICIENT_CF_POLL);
2263 TX_STATUS_ENTRY(TX_LOCKED);
2264 TX_STATUS_ENTRY(NO_BEACON_ON_RADAR);
2265 }
2266
2267 return "UNKNOWN";
2268 }
2269
2270 /**
2271 * iwl3945_scan_cancel - Cancel any currently executing HW scan
2272 *
2273 * NOTE: priv->mutex is not required before calling this function
2274 */
2275 static int iwl3945_scan_cancel(struct iwl3945_priv *priv)
2276 {
2277 if (!test_bit(STATUS_SCAN_HW, &priv->status)) {
2278 clear_bit(STATUS_SCANNING, &priv->status);
2279 return 0;
2280 }
2281
2282 if (test_bit(STATUS_SCANNING, &priv->status)) {
2283 if (!test_bit(STATUS_SCAN_ABORTING, &priv->status)) {
2284 IWL_DEBUG_SCAN("Queuing scan abort.\n");
2285 set_bit(STATUS_SCAN_ABORTING, &priv->status);
2286 queue_work(priv->workqueue, &priv->abort_scan);
2287
2288 } else
2289 IWL_DEBUG_SCAN("Scan abort already in progress.\n");
2290
2291 return test_bit(STATUS_SCANNING, &priv->status);
2292 }
2293
2294 return 0;
2295 }
2296
2297 /**
2298 * iwl3945_scan_cancel_timeout - Cancel any currently executing HW scan
2299 * @ms: amount of time to wait (in milliseconds) for scan to abort
2300 *
2301 * NOTE: priv->mutex must be held before calling this function
2302 */
2303 static int iwl3945_scan_cancel_timeout(struct iwl3945_priv *priv, unsigned long ms)
2304 {
2305 unsigned long now = jiffies;
2306 int ret;
2307
2308 ret = iwl3945_scan_cancel(priv);
2309 if (ret && ms) {
2310 mutex_unlock(&priv->mutex);
2311 while (!time_after(jiffies, now + msecs_to_jiffies(ms)) &&
2312 test_bit(STATUS_SCANNING, &priv->status))
2313 msleep(1);
2314 mutex_lock(&priv->mutex);
2315
2316 return test_bit(STATUS_SCANNING, &priv->status);
2317 }
2318
2319 return ret;
2320 }
2321
2322 static void iwl3945_sequence_reset(struct iwl3945_priv *priv)
2323 {
2324 /* Reset ieee stats */
2325
2326 /* We don't reset the net_device_stats (ieee->stats) on
2327 * re-association */
2328
2329 priv->last_seq_num = -1;
2330 priv->last_frag_num = -1;
2331 priv->last_packet_time = 0;
2332
2333 iwl3945_scan_cancel(priv);
2334 }
2335
2336 #define MAX_UCODE_BEACON_INTERVAL 1024
2337 #define INTEL_CONN_LISTEN_INTERVAL __constant_cpu_to_le16(0xA)
2338
2339 static __le16 iwl3945_adjust_beacon_interval(u16 beacon_val)
2340 {
2341 u16 new_val = 0;
2342 u16 beacon_factor = 0;
2343
2344 beacon_factor =
2345 (beacon_val + MAX_UCODE_BEACON_INTERVAL)
2346 / MAX_UCODE_BEACON_INTERVAL;
2347 new_val = beacon_val / beacon_factor;
2348
2349 return cpu_to_le16(new_val);
2350 }
2351
2352 static void iwl3945_setup_rxon_timing(struct iwl3945_priv *priv)
2353 {
2354 u64 interval_tm_unit;
2355 u64 tsf, result;
2356 unsigned long flags;
2357 struct ieee80211_conf *conf = NULL;
2358 u16 beacon_int = 0;
2359
2360 conf = ieee80211_get_hw_conf(priv->hw);
2361
2362 spin_lock_irqsave(&priv->lock, flags);
2363 priv->rxon_timing.timestamp.dw[1] = cpu_to_le32(priv->timestamp1);
2364 priv->rxon_timing.timestamp.dw[0] = cpu_to_le32(priv->timestamp0);
2365
2366 priv->rxon_timing.listen_interval = INTEL_CONN_LISTEN_INTERVAL;
2367
2368 tsf = priv->timestamp1;
2369 tsf = ((tsf << 32) | priv->timestamp0);
2370
2371 beacon_int = priv->beacon_int;
2372 spin_unlock_irqrestore(&priv->lock, flags);
2373
2374 if (priv->iw_mode == IEEE80211_IF_TYPE_STA) {
2375 if (beacon_int == 0) {
2376 priv->rxon_timing.beacon_interval = cpu_to_le16(100);
2377 priv->rxon_timing.beacon_init_val = cpu_to_le32(102400);
2378 } else {
2379 priv->rxon_timing.beacon_interval =
2380 cpu_to_le16(beacon_int);
2381 priv->rxon_timing.beacon_interval =
2382 iwl3945_adjust_beacon_interval(
2383 le16_to_cpu(priv->rxon_timing.beacon_interval));
2384 }
2385
2386 priv->rxon_timing.atim_window = 0;
2387 } else {
2388 priv->rxon_timing.beacon_interval =
2389 iwl3945_adjust_beacon_interval(conf->beacon_int);
2390 /* TODO: we need to get atim_window from upper stack
2391 * for now we set to 0 */
2392 priv->rxon_timing.atim_window = 0;
2393 }
2394
2395 interval_tm_unit =
2396 (le16_to_cpu(priv->rxon_timing.beacon_interval) * 1024);
2397 result = do_div(tsf, interval_tm_unit);
2398 priv->rxon_timing.beacon_init_val =
2399 cpu_to_le32((u32) ((u64) interval_tm_unit - result));
2400
2401 IWL_DEBUG_ASSOC
2402 ("beacon interval %d beacon timer %d beacon tim %d\n",
2403 le16_to_cpu(priv->rxon_timing.beacon_interval),
2404 le32_to_cpu(priv->rxon_timing.beacon_init_val),
2405 le16_to_cpu(priv->rxon_timing.atim_window));
2406 }
2407
2408 static int iwl3945_scan_initiate(struct iwl3945_priv *priv)
2409 {
2410 if (priv->iw_mode == IEEE80211_IF_TYPE_AP) {
2411 IWL_ERROR("APs don't scan.\n");
2412 return 0;
2413 }
2414
2415 if (!iwl3945_is_ready_rf(priv)) {
2416 IWL_DEBUG_SCAN("Aborting scan due to not ready.\n");
2417 return -EIO;
2418 }
2419
2420 if (test_bit(STATUS_SCANNING, &priv->status)) {
2421 IWL_DEBUG_SCAN("Scan already in progress.\n");
2422 return -EAGAIN;
2423 }
2424
2425 if (test_bit(STATUS_SCAN_ABORTING, &priv->status)) {
2426 IWL_DEBUG_SCAN("Scan request while abort pending. "
2427 "Queuing.\n");
2428 return -EAGAIN;
2429 }
2430
2431 IWL_DEBUG_INFO("Starting scan...\n");
2432 priv->scan_bands = 2;
2433 set_bit(STATUS_SCANNING, &priv->status);
2434 priv->scan_start = jiffies;
2435 priv->scan_pass_start = priv->scan_start;
2436
2437 queue_work(priv->workqueue, &priv->request_scan);
2438
2439 return 0;
2440 }
2441
2442 static int iwl3945_set_rxon_hwcrypto(struct iwl3945_priv *priv, int hw_decrypt)
2443 {
2444 struct iwl3945_rxon_cmd *rxon = &priv->staging_rxon;
2445
2446 if (hw_decrypt)
2447 rxon->filter_flags &= ~RXON_FILTER_DIS_DECRYPT_MSK;
2448 else
2449 rxon->filter_flags |= RXON_FILTER_DIS_DECRYPT_MSK;
2450
2451 return 0;
2452 }
2453
2454 static void iwl3945_set_flags_for_phymode(struct iwl3945_priv *priv, u8 phymode)
2455 {
2456 if (phymode == MODE_IEEE80211A) {
2457 priv->staging_rxon.flags &=
2458 ~(RXON_FLG_BAND_24G_MSK | RXON_FLG_AUTO_DETECT_MSK
2459 | RXON_FLG_CCK_MSK);
2460 priv->staging_rxon.flags |= RXON_FLG_SHORT_SLOT_MSK;
2461 } else {
2462 /* Copied from iwl3945_bg_post_associate() */
2463 if (priv->assoc_capability & WLAN_CAPABILITY_SHORT_SLOT_TIME)
2464 priv->staging_rxon.flags |= RXON_FLG_SHORT_SLOT_MSK;
2465 else
2466 priv->staging_rxon.flags &= ~RXON_FLG_SHORT_SLOT_MSK;
2467
2468 if (priv->iw_mode == IEEE80211_IF_TYPE_IBSS)
2469 priv->staging_rxon.flags &= ~RXON_FLG_SHORT_SLOT_MSK;
2470
2471 priv->staging_rxon.flags |= RXON_FLG_BAND_24G_MSK;
2472 priv->staging_rxon.flags |= RXON_FLG_AUTO_DETECT_MSK;
2473 priv->staging_rxon.flags &= ~RXON_FLG_CCK_MSK;
2474 }
2475 }
2476
2477 /*
2478 * initialize rxon structure with default values from eeprom
2479 */
2480 static void iwl3945_connection_init_rx_config(struct iwl3945_priv *priv)
2481 {
2482 const struct iwl3945_channel_info *ch_info;
2483
2484 memset(&priv->staging_rxon, 0, sizeof(priv->staging_rxon));
2485
2486 switch (priv->iw_mode) {
2487 case IEEE80211_IF_TYPE_AP:
2488 priv->staging_rxon.dev_type = RXON_DEV_TYPE_AP;
2489 break;
2490
2491 case IEEE80211_IF_TYPE_STA:
2492 priv->staging_rxon.dev_type = RXON_DEV_TYPE_ESS;
2493 priv->staging_rxon.filter_flags = RXON_FILTER_ACCEPT_GRP_MSK;
2494 break;
2495
2496 case IEEE80211_IF_TYPE_IBSS:
2497 priv->staging_rxon.dev_type = RXON_DEV_TYPE_IBSS;
2498 priv->staging_rxon.flags = RXON_FLG_SHORT_PREAMBLE_MSK;
2499 priv->staging_rxon.filter_flags = RXON_FILTER_BCON_AWARE_MSK |
2500 RXON_FILTER_ACCEPT_GRP_MSK;
2501 break;
2502
2503 case IEEE80211_IF_TYPE_MNTR:
2504 priv->staging_rxon.dev_type = RXON_DEV_TYPE_SNIFFER;
2505 priv->staging_rxon.filter_flags = RXON_FILTER_PROMISC_MSK |
2506 RXON_FILTER_CTL2HOST_MSK | RXON_FILTER_ACCEPT_GRP_MSK;
2507 break;
2508 }
2509
2510 #if 0
2511 /* TODO: Figure out when short_preamble would be set and cache from
2512 * that */
2513 if (!hw_to_local(priv->hw)->short_preamble)
2514 priv->staging_rxon.flags &= ~RXON_FLG_SHORT_PREAMBLE_MSK;
2515 else
2516 priv->staging_rxon.flags |= RXON_FLG_SHORT_PREAMBLE_MSK;
2517 #endif
2518
2519 ch_info = iwl3945_get_channel_info(priv, priv->phymode,
2520 le16_to_cpu(priv->staging_rxon.channel));
2521
2522 if (!ch_info)
2523 ch_info = &priv->channel_info[0];
2524
2525 /*
2526 * in some case A channels are all non IBSS
2527 * in this case force B/G channel
2528 */
2529 if ((priv->iw_mode == IEEE80211_IF_TYPE_IBSS) &&
2530 !(is_channel_ibss(ch_info)))
2531 ch_info = &priv->channel_info[0];
2532
2533 priv->staging_rxon.channel = cpu_to_le16(ch_info->channel);
2534 if (is_channel_a_band(ch_info))
2535 priv->phymode = MODE_IEEE80211A;
2536 else
2537 priv->phymode = MODE_IEEE80211G;
2538
2539 iwl3945_set_flags_for_phymode(priv, priv->phymode);
2540
2541 priv->staging_rxon.ofdm_basic_rates =
2542 (IWL_OFDM_RATES_MASK >> IWL_FIRST_OFDM_RATE) & 0xFF;
2543 priv->staging_rxon.cck_basic_rates =
2544 (IWL_CCK_RATES_MASK >> IWL_FIRST_CCK_RATE) & 0xF;
2545 }
2546
2547 static int iwl3945_set_mode(struct iwl3945_priv *priv, int mode)
2548 {
2549 if (mode == IEEE80211_IF_TYPE_IBSS) {
2550 const struct iwl3945_channel_info *ch_info;
2551
2552 ch_info = iwl3945_get_channel_info(priv,
2553 priv->phymode,
2554 le16_to_cpu(priv->staging_rxon.channel));
2555
2556 if (!ch_info || !is_channel_ibss(ch_info)) {
2557 IWL_ERROR("channel %d not IBSS channel\n",
2558 le16_to_cpu(priv->staging_rxon.channel));
2559 return -EINVAL;
2560 }
2561 }
2562
2563 priv->iw_mode = mode;
2564
2565 iwl3945_connection_init_rx_config(priv);
2566 memcpy(priv->staging_rxon.node_addr, priv->mac_addr, ETH_ALEN);
2567
2568 iwl3945_clear_stations_table(priv);
2569
2570 /* dont commit rxon if rf-kill is on*/
2571 if (!iwl3945_is_ready_rf(priv))
2572 return -EAGAIN;
2573
2574 cancel_delayed_work(&priv->scan_check);
2575 if (iwl3945_scan_cancel_timeout(priv, 100)) {
2576 IWL_WARNING("Aborted scan still in progress after 100ms\n");
2577 IWL_DEBUG_MAC80211("leaving - scan abort failed.\n");
2578 return -EAGAIN;
2579 }
2580
2581 iwl3945_commit_rxon(priv);
2582
2583 return 0;
2584 }
2585
2586 static void iwl3945_build_tx_cmd_hwcrypto(struct iwl3945_priv *priv,
2587 struct ieee80211_tx_control *ctl,
2588 struct iwl3945_cmd *cmd,
2589 struct sk_buff *skb_frag,
2590 int last_frag)
2591 {
2592 struct iwl3945_hw_key *keyinfo = &priv->stations[ctl->key_idx].keyinfo;
2593
2594 switch (keyinfo->alg) {
2595 case ALG_CCMP:
2596 cmd->cmd.tx.sec_ctl = TX_CMD_SEC_CCM;
2597 memcpy(cmd->cmd.tx.key, keyinfo->key, keyinfo->keylen);
2598 IWL_DEBUG_TX("tx_cmd with aes hwcrypto\n");
2599 break;
2600
2601 case ALG_TKIP:
2602 #if 0
2603 cmd->cmd.tx.sec_ctl = TX_CMD_SEC_TKIP;
2604
2605 if (last_frag)
2606 memcpy(cmd->cmd.tx.tkip_mic.byte, skb_frag->tail - 8,
2607 8);
2608 else
2609 memset(cmd->cmd.tx.tkip_mic.byte, 0, 8);
2610 #endif
2611 break;
2612
2613 case ALG_WEP:
2614 cmd->cmd.tx.sec_ctl = TX_CMD_SEC_WEP |
2615 (ctl->key_idx & TX_CMD_SEC_MSK) << TX_CMD_SEC_SHIFT;
2616
2617 if (keyinfo->keylen == 13)
2618 cmd->cmd.tx.sec_ctl |= TX_CMD_SEC_KEY128;
2619
2620 memcpy(&cmd->cmd.tx.key[3], keyinfo->key, keyinfo->keylen);
2621
2622 IWL_DEBUG_TX("Configuring packet for WEP encryption "
2623 "with key %d\n", ctl->key_idx);
2624 break;
2625
2626 default:
2627 printk(KERN_ERR "Unknown encode alg %d\n", keyinfo->alg);
2628 break;
2629 }
2630 }
2631
2632 /*
2633 * handle build REPLY_TX command notification.
2634 */
2635 static void iwl3945_build_tx_cmd_basic(struct iwl3945_priv *priv,
2636 struct iwl3945_cmd *cmd,
2637 struct ieee80211_tx_control *ctrl,
2638 struct ieee80211_hdr *hdr,
2639 int is_unicast, u8 std_id)
2640 {
2641 __le16 *qc;
2642 u16 fc = le16_to_cpu(hdr->frame_control);
2643 __le32 tx_flags = cmd->cmd.tx.tx_flags;
2644
2645 cmd->cmd.tx.stop_time.life_time = TX_CMD_LIFE_TIME_INFINITE;
2646 if (!(ctrl->flags & IEEE80211_TXCTL_NO_ACK)) {
2647 tx_flags |= TX_CMD_FLG_ACK_MSK;
2648 if ((fc & IEEE80211_FCTL_FTYPE) == IEEE80211_FTYPE_MGMT)
2649 tx_flags |= TX_CMD_FLG_SEQ_CTL_MSK;
2650 if (ieee80211_is_probe_response(fc) &&
2651 !(le16_to_cpu(hdr->seq_ctrl) & 0xf))
2652 tx_flags |= TX_CMD_FLG_TSF_MSK;
2653 } else {
2654 tx_flags &= (~TX_CMD_FLG_ACK_MSK);
2655 tx_flags |= TX_CMD_FLG_SEQ_CTL_MSK;
2656 }
2657
2658 cmd->cmd.tx.sta_id = std_id;
2659 if (ieee80211_get_morefrag(hdr))
2660 tx_flags |= TX_CMD_FLG_MORE_FRAG_MSK;
2661
2662 qc = ieee80211_get_qos_ctrl(hdr);
2663 if (qc) {
2664 cmd->cmd.tx.tid_tspec = (u8) (le16_to_cpu(*qc) & 0xf);
2665 tx_flags &= ~TX_CMD_FLG_SEQ_CTL_MSK;
2666 } else
2667 tx_flags |= TX_CMD_FLG_SEQ_CTL_MSK;
2668
2669 if (ctrl->flags & IEEE80211_TXCTL_USE_RTS_CTS) {
2670 tx_flags |= TX_CMD_FLG_RTS_MSK;
2671 tx_flags &= ~TX_CMD_FLG_CTS_MSK;
2672 } else if (ctrl->flags & IEEE80211_TXCTL_USE_CTS_PROTECT) {
2673 tx_flags &= ~TX_CMD_FLG_RTS_MSK;
2674 tx_flags |= TX_CMD_FLG_CTS_MSK;
2675 }
2676
2677 if ((tx_flags & TX_CMD_FLG_RTS_MSK) || (tx_flags & TX_CMD_FLG_CTS_MSK))
2678 tx_flags |= TX_CMD_FLG_FULL_TXOP_PROT_MSK;
2679
2680 tx_flags &= ~(TX_CMD_FLG_ANT_SEL_MSK);
2681 if ((fc & IEEE80211_FCTL_FTYPE) == IEEE80211_FTYPE_MGMT) {
2682 if ((fc & IEEE80211_FCTL_STYPE) == IEEE80211_STYPE_ASSOC_REQ ||
2683 (fc & IEEE80211_FCTL_STYPE) == IEEE80211_STYPE_REASSOC_REQ)
2684 cmd->cmd.tx.timeout.pm_frame_timeout = cpu_to_le16(3);
2685 else
2686 cmd->cmd.tx.timeout.pm_frame_timeout = cpu_to_le16(2);
2687 } else
2688 cmd->cmd.tx.timeout.pm_frame_timeout = 0;
2689
2690 cmd->cmd.tx.driver_txop = 0;
2691 cmd->cmd.tx.tx_flags = tx_flags;
2692 cmd->cmd.tx.next_frame_len = 0;
2693 }
2694
2695 /**
2696 * iwl3945_get_sta_id - Find station's index within station table
2697 */
2698 static int iwl3945_get_sta_id(struct iwl3945_priv *priv, struct ieee80211_hdr *hdr)
2699 {
2700 int sta_id;
2701 u16 fc = le16_to_cpu(hdr->frame_control);
2702
2703 /* If this frame is broadcast or management, use broadcast station id */
2704 if (((fc & IEEE80211_FCTL_FTYPE) != IEEE80211_FTYPE_DATA) ||
2705 is_multicast_ether_addr(hdr->addr1))
2706 return priv->hw_setting.bcast_sta_id;
2707
2708 switch (priv->iw_mode) {
2709
2710 /* If we are a client station in a BSS network, use the special
2711 * AP station entry (that's the only station we communicate with) */
2712 case IEEE80211_IF_TYPE_STA:
2713 return IWL_AP_ID;
2714
2715 /* If we are an AP, then find the station, or use BCAST */
2716 case IEEE80211_IF_TYPE_AP:
2717 sta_id = iwl3945_hw_find_station(priv, hdr->addr1);
2718 if (sta_id != IWL_INVALID_STATION)
2719 return sta_id;
2720 return priv->hw_setting.bcast_sta_id;
2721
2722 /* If this frame is going out to an IBSS network, find the station,
2723 * or create a new station table entry */
2724 case IEEE80211_IF_TYPE_IBSS: {
2725 DECLARE_MAC_BUF(mac);
2726
2727 /* Create new station table entry */
2728 sta_id = iwl3945_hw_find_station(priv, hdr->addr1);
2729 if (sta_id != IWL_INVALID_STATION)
2730 return sta_id;
2731
2732 sta_id = iwl3945_add_station(priv, hdr->addr1, 0, CMD_ASYNC);
2733
2734 if (sta_id != IWL_INVALID_STATION)
2735 return sta_id;
2736
2737 IWL_DEBUG_DROP("Station %s not in station map. "
2738 "Defaulting to broadcast...\n",
2739 print_mac(mac, hdr->addr1));
2740 iwl3945_print_hex_dump(IWL_DL_DROP, (u8 *) hdr, sizeof(*hdr));
2741 return priv->hw_setting.bcast_sta_id;
2742 }
2743 default:
2744 IWL_WARNING("Unknown mode of operation: %d", priv->iw_mode);
2745 return priv->hw_setting.bcast_sta_id;
2746 }
2747 }
2748
2749 /*
2750 * start REPLY_TX command process
2751 */
2752 static int iwl3945_tx_skb(struct iwl3945_priv *priv,
2753 struct sk_buff *skb, struct ieee80211_tx_control *ctl)
2754 {
2755 struct ieee80211_hdr *hdr = (struct ieee80211_hdr *)skb->data;
2756 struct iwl3945_tfd_frame *tfd;
2757 u32 *control_flags;
2758 int txq_id = ctl->queue;
2759 struct iwl3945_tx_queue *txq = NULL;
2760 struct iwl3945_queue *q = NULL;
2761 dma_addr_t phys_addr;
2762 dma_addr_t txcmd_phys;
2763 struct iwl3945_cmd *out_cmd = NULL;
2764 u16 len, idx, len_org;
2765 u8 id, hdr_len, unicast;
2766 u8 sta_id;
2767 u16 seq_number = 0;
2768 u16 fc;
2769 __le16 *qc;
2770 u8 wait_write_ptr = 0;
2771 unsigned long flags;
2772 int rc;
2773
2774 spin_lock_irqsave(&priv->lock, flags);
2775 if (iwl3945_is_rfkill(priv)) {
2776 IWL_DEBUG_DROP("Dropping - RF KILL\n");
2777 goto drop_unlock;
2778 }
2779
2780 if (!priv->interface_id) {
2781 IWL_DEBUG_DROP("Dropping - !priv->interface_id\n");
2782 goto drop_unlock;
2783 }
2784
2785 if ((ctl->tx_rate & 0xFF) == IWL_INVALID_RATE) {
2786 IWL_ERROR("ERROR: No TX rate available.\n");
2787 goto drop_unlock;
2788 }
2789
2790 unicast = !is_multicast_ether_addr(hdr->addr1);
2791 id = 0;
2792
2793 fc = le16_to_cpu(hdr->frame_control);
2794
2795 #ifdef CONFIG_IWL3945_DEBUG
2796 if (ieee80211_is_auth(fc))
2797 IWL_DEBUG_TX("Sending AUTH frame\n");
2798 else if (ieee80211_is_assoc_request(fc))
2799 IWL_DEBUG_TX("Sending ASSOC frame\n");
2800 else if (ieee80211_is_reassoc_request(fc))
2801 IWL_DEBUG_TX("Sending REASSOC frame\n");
2802 #endif
2803
2804 /* drop all data frame if we are not associated */
2805 if (!iwl3945_is_associated(priv) && !priv->assoc_id &&
2806 ((fc & IEEE80211_FCTL_FTYPE) == IEEE80211_FTYPE_DATA)) {
2807 IWL_DEBUG_DROP("Dropping - !iwl3945_is_associated\n");
2808 goto drop_unlock;
2809 }
2810
2811 spin_unlock_irqrestore(&priv->lock, flags);
2812
2813 hdr_len = ieee80211_get_hdrlen(fc);
2814
2815 /* Find (or create) index into station table for destination station */
2816 sta_id = iwl3945_get_sta_id(priv, hdr);
2817 if (sta_id == IWL_INVALID_STATION) {
2818 DECLARE_MAC_BUF(mac);
2819
2820 IWL_DEBUG_DROP("Dropping - INVALID STATION: %s\n",
2821 print_mac(mac, hdr->addr1));
2822 goto drop;
2823 }
2824
2825 IWL_DEBUG_RATE("station Id %d\n", sta_id);
2826
2827 qc = ieee80211_get_qos_ctrl(hdr);
2828 if (qc) {
2829 u8 tid = (u8)(le16_to_cpu(*qc) & 0xf);
2830 seq_number = priv->stations[sta_id].tid[tid].seq_number &
2831 IEEE80211_SCTL_SEQ;
2832 hdr->seq_ctrl = cpu_to_le16(seq_number) |
2833 (hdr->seq_ctrl &
2834 __constant_cpu_to_le16(IEEE80211_SCTL_FRAG));
2835 seq_number += 0x10;
2836 }
2837
2838 /* Descriptor for chosen Tx queue */
2839 txq = &priv->txq[txq_id];
2840 q = &txq->q;
2841
2842 spin_lock_irqsave(&priv->lock, flags);
2843
2844 /* Set up first empty TFD within this queue's circular TFD buffer */
2845 tfd = &txq->bd[q->write_ptr];
2846 memset(tfd, 0, sizeof(*tfd));
2847 control_flags = (u32 *) tfd;
2848 idx = get_cmd_index(q, q->write_ptr, 0);
2849
2850 /* Set up driver data for this TFD */
2851 memset(&(txq->txb[q->write_ptr]), 0, sizeof(struct iwl3945_tx_info));
2852 txq->txb[q->write_ptr].skb[0] = skb;
2853 memcpy(&(txq->txb[q->write_ptr].status.control),
2854 ctl, sizeof(struct ieee80211_tx_control));
2855
2856 /* Init first empty entry in queue's array of Tx/cmd buffers */
2857 out_cmd = &txq->cmd[idx];
2858 memset(&out_cmd->hdr, 0, sizeof(out_cmd->hdr));
2859 memset(&out_cmd->cmd.tx, 0, sizeof(out_cmd->cmd.tx));
2860
2861 /*
2862 * Set up the Tx-command (not MAC!) header.
2863 * Store the chosen Tx queue and TFD index within the sequence field;
2864 * after Tx, uCode's Tx response will return this value so driver can
2865 * locate the frame within the tx queue and do post-tx processing.
2866 */
2867 out_cmd->hdr.cmd = REPLY_TX;
2868 out_cmd->hdr.sequence = cpu_to_le16((u16)(QUEUE_TO_SEQ(txq_id) |
2869 INDEX_TO_SEQ(q->write_ptr)));
2870
2871 /* Copy MAC header from skb into command buffer */
2872 memcpy(out_cmd->cmd.tx.hdr, hdr, hdr_len);
2873
2874 /*
2875 * Use the first empty entry in this queue's command buffer array
2876 * to contain the Tx command and MAC header concatenated together
2877 * (payload data will be in another buffer).
2878 * Size of this varies, due to varying MAC header length.
2879 * If end is not dword aligned, we'll have 2 extra bytes at the end
2880 * of the MAC header (device reads on dword boundaries).
2881 * We'll tell device about this padding later.
2882 */
2883 len = priv->hw_setting.tx_cmd_len +
2884 sizeof(struct iwl3945_cmd_header) + hdr_len;
2885
2886 len_org = len;
2887 len = (len + 3) & ~3;
2888
2889 if (len_org != len)
2890 len_org = 1;
2891 else
2892 len_org = 0;
2893
2894 /* Physical address of this Tx command's header (not MAC header!),
2895 * within command buffer array. */
2896 txcmd_phys = txq->dma_addr_cmd + sizeof(struct iwl3945_cmd) * idx +
2897 offsetof(struct iwl3945_cmd, hdr);
2898
2899 /* Add buffer containing Tx command and MAC(!) header to TFD's
2900 * first entry */
2901 iwl3945_hw_txq_attach_buf_to_tfd(priv, tfd, txcmd_phys, len);
2902
2903 if (!(ctl->flags & IEEE80211_TXCTL_DO_NOT_ENCRYPT))
2904 iwl3945_build_tx_cmd_hwcrypto(priv, ctl, out_cmd, skb, 0);
2905
2906 /* Set up TFD's 2nd entry to point directly to remainder of skb,
2907 * if any (802.11 null frames have no payload). */
2908 len = skb->len - hdr_len;
2909 if (len) {
2910 phys_addr = pci_map_single(priv->pci_dev, skb->data + hdr_len,
2911 len, PCI_DMA_TODEVICE);
2912 iwl3945_hw_txq_attach_buf_to_tfd(priv, tfd, phys_addr, len);
2913 }
2914
2915 if (!len)
2916 /* If there is no payload, then we use only one Tx buffer */
2917 *control_flags = TFD_CTL_COUNT_SET(1);
2918 else
2919 /* Else use 2 buffers.
2920 * Tell 3945 about any padding after MAC header */
2921 *control_flags = TFD_CTL_COUNT_SET(2) |
2922 TFD_CTL_PAD_SET(U32_PAD(len));
2923
2924 /* Total # bytes to be transmitted */
2925 len = (u16)skb->len;
2926 out_cmd->cmd.tx.len = cpu_to_le16(len);
2927
2928 /* TODO need this for burst mode later on */
2929 iwl3945_build_tx_cmd_basic(priv, out_cmd, ctl, hdr, unicast, sta_id);
2930
2931 /* set is_hcca to 0; it probably will never be implemented */
2932 iwl3945_hw_build_tx_cmd_rate(priv, out_cmd, ctl, hdr, sta_id, 0);
2933
2934 out_cmd->cmd.tx.tx_flags &= ~TX_CMD_FLG_ANT_A_MSK;
2935 out_cmd->cmd.tx.tx_flags &= ~TX_CMD_FLG_ANT_B_MSK;
2936
2937 if (!ieee80211_get_morefrag(hdr)) {
2938 txq->need_update = 1;
2939 if (qc) {
2940 u8 tid = (u8)(le16_to_cpu(*qc) & 0xf);
2941 priv->stations[sta_id].tid[tid].seq_number = seq_number;
2942 }
2943 } else {
2944 wait_write_ptr = 1;
2945 txq->need_update = 0;
2946 }
2947
2948 iwl3945_print_hex_dump(IWL_DL_TX, out_cmd->cmd.payload,
2949 sizeof(out_cmd->cmd.tx));
2950
2951 iwl3945_print_hex_dump(IWL_DL_TX, (u8 *)out_cmd->cmd.tx.hdr,
2952 ieee80211_get_hdrlen(fc));
2953
2954 /* Tell device the write index *just past* this latest filled TFD */
2955 q->write_ptr = iwl3945_queue_inc_wrap(q->write_ptr, q->n_bd);
2956 rc = iwl3945_tx_queue_update_write_ptr(priv, txq);
2957 spin_unlock_irqrestore(&priv->lock, flags);
2958
2959 if (rc)
2960 return rc;
2961
2962 if ((iwl3945_queue_space(q) < q->high_mark)
2963 && priv->mac80211_registered) {
2964 if (wait_write_ptr) {
2965 spin_lock_irqsave(&priv->lock, flags);
2966 txq->need_update = 1;
2967 iwl3945_tx_queue_update_write_ptr(priv, txq);
2968 spin_unlock_irqrestore(&priv->lock, flags);
2969 }
2970
2971 ieee80211_stop_queue(priv->hw, ctl->queue);
2972 }
2973
2974 return 0;
2975
2976 drop_unlock:
2977 spin_unlock_irqrestore(&priv->lock, flags);
2978 drop:
2979 return -1;
2980 }
2981
2982 static void iwl3945_set_rate(struct iwl3945_priv *priv)
2983 {
2984 const struct ieee80211_hw_mode *hw = NULL;
2985 struct ieee80211_rate *rate;
2986 int i;
2987
2988 hw = iwl3945_get_hw_mode(priv, priv->phymode);
2989 if (!hw) {
2990 IWL_ERROR("Failed to set rate: unable to get hw mode\n");
2991 return;
2992 }
2993
2994 priv->active_rate = 0;
2995 priv->active_rate_basic = 0;
2996
2997 IWL_DEBUG_RATE("Setting rates for 802.11%c\n",
2998 hw->mode == MODE_IEEE80211A ?
2999 'a' : ((hw->mode == MODE_IEEE80211B) ? 'b' : 'g'));
3000
3001 for (i = 0; i < hw->num_rates; i++) {
3002 rate = &(hw->rates[i]);
3003 if ((rate->val < IWL_RATE_COUNT) &&
3004 (rate->flags & IEEE80211_RATE_SUPPORTED)) {
3005 IWL_DEBUG_RATE("Adding rate index %d (plcp %d)%s\n",
3006 rate->val, iwl3945_rates[rate->val].plcp,
3007 (rate->flags & IEEE80211_RATE_BASIC) ?
3008 "*" : "");
3009 priv->active_rate |= (1 << rate->val);
3010 if (rate->flags & IEEE80211_RATE_BASIC)
3011 priv->active_rate_basic |= (1 << rate->val);
3012 } else
3013 IWL_DEBUG_RATE("Not adding rate %d (plcp %d)\n",
3014 rate->val, iwl3945_rates[rate->val].plcp);
3015 }
3016
3017 IWL_DEBUG_RATE("Set active_rate = %0x, active_rate_basic = %0x\n",
3018 priv->active_rate, priv->active_rate_basic);
3019
3020 /*
3021 * If a basic rate is configured, then use it (adding IWL_RATE_1M_MASK)
3022 * otherwise set it to the default of all CCK rates and 6, 12, 24 for
3023 * OFDM
3024 */
3025 if (priv->active_rate_basic & IWL_CCK_BASIC_RATES_MASK)
3026 priv->staging_rxon.cck_basic_rates =
3027 ((priv->active_rate_basic &
3028 IWL_CCK_RATES_MASK) >> IWL_FIRST_CCK_RATE) & 0xF;
3029 else
3030 priv->staging_rxon.cck_basic_rates =
3031 (IWL_CCK_BASIC_RATES_MASK >> IWL_FIRST_CCK_RATE) & 0xF;
3032
3033 if (priv->active_rate_basic & IWL_OFDM_BASIC_RATES_MASK)
3034 priv->staging_rxon.ofdm_basic_rates =
3035 ((priv->active_rate_basic &
3036 (IWL_OFDM_BASIC_RATES_MASK | IWL_RATE_6M_MASK)) >>
3037 IWL_FIRST_OFDM_RATE) & 0xFF;
3038 else
3039 priv->staging_rxon.ofdm_basic_rates =
3040 (IWL_OFDM_BASIC_RATES_MASK >> IWL_FIRST_OFDM_RATE) & 0xFF;
3041 }
3042
3043 static void iwl3945_radio_kill_sw(struct iwl3945_priv *priv, int disable_radio)
3044 {
3045 unsigned long flags;
3046
3047 if (!!disable_radio == test_bit(STATUS_RF_KILL_SW, &priv->status))
3048 return;
3049
3050 IWL_DEBUG_RF_KILL("Manual SW RF KILL set to: RADIO %s\n",
3051 disable_radio ? "OFF" : "ON");
3052
3053 if (disable_radio) {
3054 iwl3945_scan_cancel(priv);
3055 /* FIXME: This is a workaround for AP */
3056 if (priv->iw_mode != IEEE80211_IF_TYPE_AP) {
3057 spin_lock_irqsave(&priv->lock, flags);
3058 iwl3945_write32(priv, CSR_UCODE_DRV_GP1_SET,
3059 CSR_UCODE_SW_BIT_RFKILL);
3060 spin_unlock_irqrestore(&priv->lock, flags);
3061 iwl3945_send_card_state(priv, CARD_STATE_CMD_DISABLE, 0);
3062 set_bit(STATUS_RF_KILL_SW, &priv->status);
3063 }
3064 return;
3065 }
3066
3067 spin_lock_irqsave(&priv->lock, flags);
3068 iwl3945_write32(priv, CSR_UCODE_DRV_GP1_CLR, CSR_UCODE_SW_BIT_RFKILL);
3069
3070 clear_bit(STATUS_RF_KILL_SW, &priv->status);
3071 spin_unlock_irqrestore(&priv->lock, flags);
3072
3073 /* wake up ucode */
3074 msleep(10);
3075
3076 spin_lock_irqsave(&priv->lock, flags);
3077 iwl3945_read32(priv, CSR_UCODE_DRV_GP1);
3078 if (!iwl3945_grab_nic_access(priv))
3079 iwl3945_release_nic_access(priv);
3080 spin_unlock_irqrestore(&priv->lock, flags);
3081
3082 if (test_bit(STATUS_RF_KILL_HW, &priv->status)) {
3083 IWL_DEBUG_RF_KILL("Can not turn radio back on - "
3084 "disabled by HW switch\n");
3085 return;
3086 }
3087
3088 queue_work(priv->workqueue, &priv->restart);
3089 return;
3090 }
3091
3092 void iwl3945_set_decrypted_flag(struct iwl3945_priv *priv, struct sk_buff *skb,
3093 u32 decrypt_res, struct ieee80211_rx_status *stats)
3094 {
3095 u16 fc =
3096 le16_to_cpu(((struct ieee80211_hdr *)skb->data)->frame_control);
3097
3098 if (priv->active_rxon.filter_flags & RXON_FILTER_DIS_DECRYPT_MSK)
3099 return;
3100
3101 if (!(fc & IEEE80211_FCTL_PROTECTED))
3102 return;
3103
3104 IWL_DEBUG_RX("decrypt_res:0x%x\n", decrypt_res);
3105 switch (decrypt_res & RX_RES_STATUS_SEC_TYPE_MSK) {
3106 case RX_RES_STATUS_SEC_TYPE_TKIP:
3107 if ((decrypt_res & RX_RES_STATUS_DECRYPT_TYPE_MSK) ==
3108 RX_RES_STATUS_BAD_ICV_MIC)
3109 stats->flag |= RX_FLAG_MMIC_ERROR;
3110 case RX_RES_STATUS_SEC_TYPE_WEP:
3111 case RX_RES_STATUS_SEC_TYPE_CCMP:
3112 if ((decrypt_res & RX_RES_STATUS_DECRYPT_TYPE_MSK) ==
3113 RX_RES_STATUS_DECRYPT_OK) {
3114 IWL_DEBUG_RX("hw decrypt successfully!!!\n");
3115 stats->flag |= RX_FLAG_DECRYPTED;
3116 }
3117 break;
3118
3119 default:
3120 break;
3121 }
3122 }
3123
3124 void iwl3945_handle_data_packet_monitor(struct iwl3945_priv *priv,
3125 struct iwl3945_rx_mem_buffer *rxb,
3126 void *data, short len,
3127 struct ieee80211_rx_status *stats,
3128 u16 phy_flags)
3129 {
3130 struct iwl3945_rt_rx_hdr *iwl3945_rt;
3131
3132 /* First cache any information we need before we overwrite
3133 * the information provided in the skb from the hardware */
3134 s8 signal = stats->ssi;
3135 s8 noise = 0;
3136 int rate = stats->rate;
3137 u64 tsf = stats->mactime;
3138 __le16 phy_flags_hw = cpu_to_le16(phy_flags);
3139
3140 /* We received data from the HW, so stop the watchdog */
3141 if (len > IWL_RX_BUF_SIZE - sizeof(*iwl3945_rt)) {
3142 IWL_DEBUG_DROP("Dropping too large packet in monitor\n");
3143 return;
3144 }
3145
3146 /* copy the frame data to write after where the radiotap header goes */
3147 iwl3945_rt = (void *)rxb->skb->data;
3148 memmove(iwl3945_rt->payload, data, len);
3149
3150 iwl3945_rt->rt_hdr.it_version = PKTHDR_RADIOTAP_VERSION;
3151 iwl3945_rt->rt_hdr.it_pad = 0; /* always good to zero */
3152
3153 /* total header + data */
3154 iwl3945_rt->rt_hdr.it_len = cpu_to_le16(sizeof(*iwl3945_rt));
3155
3156 /* Set the size of the skb to the size of the frame */
3157 skb_put(rxb->skb, sizeof(*iwl3945_rt) + len);
3158
3159 /* Big bitfield of all the fields we provide in radiotap */
3160 iwl3945_rt->rt_hdr.it_present =
3161 cpu_to_le32((1 << IEEE80211_RADIOTAP_TSFT) |
3162 (1 << IEEE80211_RADIOTAP_FLAGS) |
3163 (1 << IEEE80211_RADIOTAP_RATE) |
3164 (1 << IEEE80211_RADIOTAP_CHANNEL) |
3165 (1 << IEEE80211_RADIOTAP_DBM_ANTSIGNAL) |
3166 (1 << IEEE80211_RADIOTAP_DBM_ANTNOISE) |
3167 (1 << IEEE80211_RADIOTAP_ANTENNA));
3168
3169 /* Zero the flags, we'll add to them as we go */
3170 iwl3945_rt->rt_flags = 0;
3171
3172 iwl3945_rt->rt_tsf = cpu_to_le64(tsf);
3173
3174 /* Convert to dBm */
3175 iwl3945_rt->rt_dbmsignal = signal;
3176 iwl3945_rt->rt_dbmnoise = noise;
3177
3178 /* Convert the channel frequency and set the flags */
3179 iwl3945_rt->rt_channelMHz = cpu_to_le16(stats->freq);
3180 if (!(phy_flags_hw & RX_RES_PHY_FLAGS_BAND_24_MSK))
3181 iwl3945_rt->rt_chbitmask =
3182 cpu_to_le16((IEEE80211_CHAN_OFDM | IEEE80211_CHAN_5GHZ));
3183 else if (phy_flags_hw & RX_RES_PHY_FLAGS_MOD_CCK_MSK)
3184 iwl3945_rt->rt_chbitmask =
3185 cpu_to_le16((IEEE80211_CHAN_CCK | IEEE80211_CHAN_2GHZ));
3186 else /* 802.11g */
3187 iwl3945_rt->rt_chbitmask =
3188 cpu_to_le16((IEEE80211_CHAN_OFDM | IEEE80211_CHAN_2GHZ));
3189
3190 rate = iwl3945_rate_index_from_plcp(rate);
3191 if (rate == -1)
3192 iwl3945_rt->rt_rate = 0;
3193 else
3194 iwl3945_rt->rt_rate = iwl3945_rates[rate].ieee;
3195
3196 /* antenna number */
3197 iwl3945_rt->rt_antenna =
3198 le16_to_cpu(phy_flags_hw & RX_RES_PHY_FLAGS_ANTENNA_MSK) >> 4;
3199
3200 /* set the preamble flag if we have it */
3201 if (phy_flags_hw & RX_RES_PHY_FLAGS_SHORT_PREAMBLE_MSK)
3202 iwl3945_rt->rt_flags |= IEEE80211_RADIOTAP_F_SHORTPRE;
3203
3204 IWL_DEBUG_RX("Rx packet of %d bytes.\n", rxb->skb->len);
3205
3206 stats->flag |= RX_FLAG_RADIOTAP;
3207 ieee80211_rx_irqsafe(priv->hw, rxb->skb, stats);
3208 rxb->skb = NULL;
3209 }
3210
3211
3212 #define IWL_PACKET_RETRY_TIME HZ
3213
3214 int iwl3945_is_duplicate_packet(struct iwl3945_priv *priv, struct ieee80211_hdr *header)
3215 {
3216 u16 sc = le16_to_cpu(header->seq_ctrl);
3217 u16 seq = (sc & IEEE80211_SCTL_SEQ) >> 4;
3218 u16 frag = sc & IEEE80211_SCTL_FRAG;
3219 u16 *last_seq, *last_frag;
3220 unsigned long *last_time;
3221
3222 switch (priv->iw_mode) {
3223 case IEEE80211_IF_TYPE_IBSS:{
3224 struct list_head *p;
3225 struct iwl3945_ibss_seq *entry = NULL;
3226 u8 *mac = header->addr2;
3227 int index = mac[5] & (IWL_IBSS_MAC_HASH_SIZE - 1);
3228
3229 __list_for_each(p, &priv->ibss_mac_hash[index]) {
3230 entry = list_entry(p, struct iwl3945_ibss_seq, list);
3231 if (!compare_ether_addr(entry->mac, mac))
3232 break;
3233 }
3234 if (p == &priv->ibss_mac_hash[index]) {
3235 entry = kzalloc(sizeof(*entry), GFP_ATOMIC);
3236 if (!entry) {
3237 IWL_ERROR("Cannot malloc new mac entry\n");
3238 return 0;
3239 }
3240 memcpy(entry->mac, mac, ETH_ALEN);
3241 entry->seq_num = seq;
3242 entry->frag_num = frag;
3243 entry->packet_time = jiffies;
3244 list_add(&entry->list, &priv->ibss_mac_hash[index]);
3245 return 0;
3246 }
3247 last_seq = &entry->seq_num;
3248 last_frag = &entry->frag_num;
3249 last_time = &entry->packet_time;
3250 break;
3251 }
3252 case IEEE80211_IF_TYPE_STA:
3253 last_seq = &priv->last_seq_num;
3254 last_frag = &priv->last_frag_num;
3255 last_time = &priv->last_packet_time;
3256 break;
3257 default:
3258 return 0;
3259 }
3260 if ((*last_seq == seq) &&
3261 time_after(*last_time + IWL_PACKET_RETRY_TIME, jiffies)) {
3262 if (*last_frag == frag)
3263 goto drop;
3264 if (*last_frag + 1 != frag)
3265 /* out-of-order fragment */
3266 goto drop;
3267 } else
3268 *last_seq = seq;
3269
3270 *last_frag = frag;
3271 *last_time = jiffies;
3272 return 0;
3273
3274 drop:
3275 return 1;
3276 }
3277
3278 #ifdef CONFIG_IWL3945_SPECTRUM_MEASUREMENT
3279
3280 #include "iwl-spectrum.h"
3281
3282 #define BEACON_TIME_MASK_LOW 0x00FFFFFF
3283 #define BEACON_TIME_MASK_HIGH 0xFF000000
3284 #define TIME_UNIT 1024
3285
3286 /*
3287 * extended beacon time format
3288 * time in usec will be changed into a 32-bit value in 8:24 format
3289 * the high 1 byte is the beacon counts
3290 * the lower 3 bytes is the time in usec within one beacon interval
3291 */
3292
3293 static u32 iwl3945_usecs_to_beacons(u32 usec, u32 beacon_interval)
3294 {
3295 u32 quot;
3296 u32 rem;
3297 u32 interval = beacon_interval * 1024;
3298
3299 if (!interval || !usec)
3300 return 0;
3301
3302 quot = (usec / interval) & (BEACON_TIME_MASK_HIGH >> 24);
3303 rem = (usec % interval) & BEACON_TIME_MASK_LOW;
3304
3305 return (quot << 24) + rem;
3306 }
3307
3308 /* base is usually what we get from ucode with each received frame,
3309 * the same as HW timer counter counting down
3310 */
3311
3312 static __le32 iwl3945_add_beacon_time(u32 base, u32 addon, u32 beacon_interval)
3313 {
3314 u32 base_low = base & BEACON_TIME_MASK_LOW;
3315 u32 addon_low = addon & BEACON_TIME_MASK_LOW;
3316 u32 interval = beacon_interval * TIME_UNIT;
3317 u32 res = (base & BEACON_TIME_MASK_HIGH) +
3318 (addon & BEACON_TIME_MASK_HIGH);
3319
3320 if (base_low > addon_low)
3321 res += base_low - addon_low;
3322 else if (base_low < addon_low) {
3323 res += interval + base_low - addon_low;
3324 res += (1 << 24);
3325 } else
3326 res += (1 << 24);
3327
3328 return cpu_to_le32(res);
3329 }
3330
3331 static int iwl3945_get_measurement(struct iwl3945_priv *priv,
3332 struct ieee80211_measurement_params *params,
3333 u8 type)
3334 {
3335 struct iwl3945_spectrum_cmd spectrum;
3336 struct iwl3945_rx_packet *res;
3337 struct iwl3945_host_cmd cmd = {
3338 .id = REPLY_SPECTRUM_MEASUREMENT_CMD,
3339 .data = (void *)&spectrum,
3340 .meta.flags = CMD_WANT_SKB,
3341 };
3342 u32 add_time = le64_to_cpu(params->start_time);
3343 int rc;
3344 int spectrum_resp_status;
3345 int duration = le16_to_cpu(params->duration);
3346
3347 if (iwl3945_is_associated(priv))
3348 add_time =
3349 iwl3945_usecs_to_beacons(
3350 le64_to_cpu(params->start_time) - priv->last_tsf,
3351 le16_to_cpu(priv->rxon_timing.beacon_interval));
3352
3353 memset(&spectrum, 0, sizeof(spectrum));
3354
3355 spectrum.channel_count = cpu_to_le16(1);
3356 spectrum.flags =
3357 RXON_FLG_TSF2HOST_MSK | RXON_FLG_ANT_A_MSK | RXON_FLG_DIS_DIV_MSK;
3358 spectrum.filter_flags = MEASUREMENT_FILTER_FLAG;
3359 cmd.len = sizeof(spectrum);
3360 spectrum.len = cpu_to_le16(cmd.len - sizeof(spectrum.len));
3361
3362 if (iwl3945_is_associated(priv))
3363 spectrum.start_time =
3364 iwl3945_add_beacon_time(priv->last_beacon_time,
3365 add_time,
3366 le16_to_cpu(priv->rxon_timing.beacon_interval));
3367 else
3368 spectrum.start_time = 0;
3369
3370 spectrum.channels[0].duration = cpu_to_le32(duration * TIME_UNIT);
3371 spectrum.channels[0].channel = params->channel;
3372 spectrum.channels[0].type = type;
3373 if (priv->active_rxon.flags & RXON_FLG_BAND_24G_MSK)
3374 spectrum.flags |= RXON_FLG_BAND_24G_MSK |
3375 RXON_FLG_AUTO_DETECT_MSK | RXON_FLG_TGG_PROTECT_MSK;
3376
3377 rc = iwl3945_send_cmd_sync(priv, &cmd);
3378 if (rc)
3379 return rc;
3380
3381 res = (struct iwl3945_rx_packet *)cmd.meta.u.skb->data;
3382 if (res->hdr.flags & IWL_CMD_FAILED_MSK) {
3383 IWL_ERROR("Bad return from REPLY_RX_ON_ASSOC command\n");
3384 rc = -EIO;
3385 }
3386
3387 spectrum_resp_status = le16_to_cpu(res->u.spectrum.status);
3388 switch (spectrum_resp_status) {
3389 case 0: /* Command will be handled */
3390 if (res->u.spectrum.id != 0xff) {
3391 IWL_DEBUG_INFO("Replaced existing measurement: %d\n",
3392 res->u.spectrum.id);
3393 priv->measurement_status &= ~MEASUREMENT_READY;
3394 }
3395 priv->measurement_status |= MEASUREMENT_ACTIVE;
3396 rc = 0;
3397 break;
3398
3399 case 1: /* Command will not be handled */
3400 rc = -EAGAIN;
3401 break;
3402 }
3403
3404 dev_kfree_skb_any(cmd.meta.u.skb);
3405
3406 return rc;
3407 }
3408 #endif
3409
3410 static void iwl3945_txstatus_to_ieee(struct iwl3945_priv *priv,
3411 struct iwl3945_tx_info *tx_sta)
3412 {
3413
3414 tx_sta->status.ack_signal = 0;
3415 tx_sta->status.excessive_retries = 0;
3416 tx_sta->status.queue_length = 0;
3417 tx_sta->status.queue_number = 0;
3418
3419 if (in_interrupt())
3420 ieee80211_tx_status_irqsafe(priv->hw,
3421 tx_sta->skb[0], &(tx_sta->status));
3422 else
3423 ieee80211_tx_status(priv->hw,
3424 tx_sta->skb[0], &(tx_sta->status));
3425
3426 tx_sta->skb[0] = NULL;
3427 }
3428
3429 /**
3430 * iwl3945_tx_queue_reclaim - Reclaim Tx queue entries already Tx'd
3431 *
3432 * When FW advances 'R' index, all entries between old and new 'R' index
3433 * need to be reclaimed. As result, some free space forms. If there is
3434 * enough free space (> low mark), wake the stack that feeds us.
3435 */
3436 static int iwl3945_tx_queue_reclaim(struct iwl3945_priv *priv, int txq_id, int index)
3437 {
3438 struct iwl3945_tx_queue *txq = &priv->txq[txq_id];
3439 struct iwl3945_queue *q = &txq->q;
3440 int nfreed = 0;
3441
3442 if ((index >= q->n_bd) || (x2_queue_used(q, index) == 0)) {
3443 IWL_ERROR("Read index for DMA queue txq id (%d), index %d, "
3444 "is out of range [0-%d] %d %d.\n", txq_id,
3445 index, q->n_bd, q->write_ptr, q->read_ptr);
3446 return 0;
3447 }
3448
3449 for (index = iwl3945_queue_inc_wrap(index, q->n_bd);
3450 q->read_ptr != index;
3451 q->read_ptr = iwl3945_queue_inc_wrap(q->read_ptr, q->n_bd)) {
3452 if (txq_id != IWL_CMD_QUEUE_NUM) {
3453 iwl3945_txstatus_to_ieee(priv,
3454 &(txq->txb[txq->q.read_ptr]));
3455 iwl3945_hw_txq_free_tfd(priv, txq);
3456 } else if (nfreed > 1) {
3457 IWL_ERROR("HCMD skipped: index (%d) %d %d\n", index,
3458 q->write_ptr, q->read_ptr);
3459 queue_work(priv->workqueue, &priv->restart);
3460 }
3461 nfreed++;
3462 }
3463
3464 if (iwl3945_queue_space(q) > q->low_mark && (txq_id >= 0) &&
3465 (txq_id != IWL_CMD_QUEUE_NUM) &&
3466 priv->mac80211_registered)
3467 ieee80211_wake_queue(priv->hw, txq_id);
3468
3469
3470 return nfreed;
3471 }
3472
3473 static int iwl3945_is_tx_success(u32 status)
3474 {
3475 return (status & 0xFF) == 0x1;
3476 }
3477
3478 /******************************************************************************
3479 *
3480 * Generic RX handler implementations
3481 *
3482 ******************************************************************************/
3483 /**
3484 * iwl3945_rx_reply_tx - Handle Tx response
3485 */
3486 static void iwl3945_rx_reply_tx(struct iwl3945_priv *priv,
3487 struct iwl3945_rx_mem_buffer *rxb)
3488 {
3489 struct iwl3945_rx_packet *pkt = (void *)rxb->skb->data;
3490 u16 sequence = le16_to_cpu(pkt->hdr.sequence);
3491 int txq_id = SEQ_TO_QUEUE(sequence);
3492 int index = SEQ_TO_INDEX(sequence);
3493 struct iwl3945_tx_queue *txq = &priv->txq[txq_id];
3494 struct ieee80211_tx_status *tx_status;
3495 struct iwl3945_tx_resp *tx_resp = (void *)&pkt->u.raw[0];
3496 u32 status = le32_to_cpu(tx_resp->status);
3497
3498 if ((index >= txq->q.n_bd) || (x2_queue_used(&txq->q, index) == 0)) {
3499 IWL_ERROR("Read index for DMA queue txq_id (%d) index %d "
3500 "is out of range [0-%d] %d %d\n", txq_id,
3501 index, txq->q.n_bd, txq->q.write_ptr,
3502 txq->q.read_ptr);
3503 return;
3504 }
3505
3506 tx_status = &(txq->txb[txq->q.read_ptr].status);
3507
3508 tx_status->retry_count = tx_resp->failure_frame;
3509 tx_status->queue_number = status;
3510 tx_status->queue_length = tx_resp->bt_kill_count;
3511 tx_status->queue_length |= tx_resp->failure_rts;
3512
3513 tx_status->flags =
3514 iwl3945_is_tx_success(status) ? IEEE80211_TX_STATUS_ACK : 0;
3515
3516 tx_status->control.tx_rate = iwl3945_rate_index_from_plcp(tx_resp->rate);
3517
3518 IWL_DEBUG_TX("Tx queue %d Status %s (0x%08x) plcp rate %d retries %d\n",
3519 txq_id, iwl3945_get_tx_fail_reason(status), status,
3520 tx_resp->rate, tx_resp->failure_frame);
3521
3522 IWL_DEBUG_TX_REPLY("Tx queue reclaim %d\n", index);
3523 if (index != -1)
3524 iwl3945_tx_queue_reclaim(priv, txq_id, index);
3525
3526 if (iwl_check_bits(status, TX_ABORT_REQUIRED_MSK))
3527 IWL_ERROR("TODO: Implement Tx ABORT REQUIRED!!!\n");
3528 }
3529
3530
3531 static void iwl3945_rx_reply_alive(struct iwl3945_priv *priv,
3532 struct iwl3945_rx_mem_buffer *rxb)
3533 {
3534 struct iwl3945_rx_packet *pkt = (void *)rxb->skb->data;
3535 struct iwl3945_alive_resp *palive;
3536 struct delayed_work *pwork;
3537
3538 palive = &pkt->u.alive_frame;
3539
3540 IWL_DEBUG_INFO("Alive ucode status 0x%08X revision "
3541 "0x%01X 0x%01X\n",
3542 palive->is_valid, palive->ver_type,
3543 palive->ver_subtype);
3544
3545 if (palive->ver_subtype == INITIALIZE_SUBTYPE) {
3546 IWL_DEBUG_INFO("Initialization Alive received.\n");
3547 memcpy(&priv->card_alive_init,
3548 &pkt->u.alive_frame,
3549 sizeof(struct iwl3945_init_alive_resp));
3550 pwork = &priv->init_alive_start;
3551 } else {
3552 IWL_DEBUG_INFO("Runtime Alive received.\n");
3553 memcpy(&priv->card_alive, &pkt->u.alive_frame,
3554 sizeof(struct iwl3945_alive_resp));
3555 pwork = &priv->alive_start;
3556 iwl3945_disable_events(priv);
3557 }
3558
3559 /* We delay the ALIVE response by 5ms to
3560 * give the HW RF Kill time to activate... */
3561 if (palive->is_valid == UCODE_VALID_OK)
3562 queue_delayed_work(priv->workqueue, pwork,
3563 msecs_to_jiffies(5));
3564 else
3565 IWL_WARNING("uCode did not respond OK.\n");
3566 }
3567
3568 static void iwl3945_rx_reply_add_sta(struct iwl3945_priv *priv,
3569 struct iwl3945_rx_mem_buffer *rxb)
3570 {
3571 struct iwl3945_rx_packet *pkt = (void *)rxb->skb->data;
3572
3573 IWL_DEBUG_RX("Received REPLY_ADD_STA: 0x%02X\n", pkt->u.status);
3574 return;
3575 }
3576
3577 static void iwl3945_rx_reply_error(struct iwl3945_priv *priv,
3578 struct iwl3945_rx_mem_buffer *rxb)
3579 {
3580 struct iwl3945_rx_packet *pkt = (void *)rxb->skb->data;
3581
3582 IWL_ERROR("Error Reply type 0x%08X cmd %s (0x%02X) "
3583 "seq 0x%04X ser 0x%08X\n",
3584 le32_to_cpu(pkt->u.err_resp.error_type),
3585 get_cmd_string(pkt->u.err_resp.cmd_id),
3586 pkt->u.err_resp.cmd_id,
3587 le16_to_cpu(pkt->u.err_resp.bad_cmd_seq_num),
3588 le32_to_cpu(pkt->u.err_resp.error_info));
3589 }
3590
3591 #define TX_STATUS_ENTRY(x) case TX_STATUS_FAIL_ ## x: return #x
3592
3593 static void iwl3945_rx_csa(struct iwl3945_priv *priv, struct iwl3945_rx_mem_buffer *rxb)
3594 {
3595 struct iwl3945_rx_packet *pkt = (void *)rxb->skb->data;
3596 struct iwl3945_rxon_cmd *rxon = (void *)&priv->active_rxon;
3597 struct iwl3945_csa_notification *csa = &(pkt->u.csa_notif);
3598 IWL_DEBUG_11H("CSA notif: channel %d, status %d\n",
3599 le16_to_cpu(csa->channel), le32_to_cpu(csa->status));
3600 rxon->channel = csa->channel;
3601 priv->staging_rxon.channel = csa->channel;
3602 }
3603
3604 static void iwl3945_rx_spectrum_measure_notif(struct iwl3945_priv *priv,
3605 struct iwl3945_rx_mem_buffer *rxb)
3606 {
3607 #ifdef CONFIG_IWL3945_SPECTRUM_MEASUREMENT
3608 struct iwl3945_rx_packet *pkt = (void *)rxb->skb->data;
3609 struct iwl3945_spectrum_notification *report = &(pkt->u.spectrum_notif);
3610
3611 if (!report->state) {
3612 IWL_DEBUG(IWL_DL_11H | IWL_DL_INFO,
3613 "Spectrum Measure Notification: Start\n");
3614 return;
3615 }
3616
3617 memcpy(&priv->measure_report, report, sizeof(*report));
3618 priv->measurement_status |= MEASUREMENT_READY;
3619 #endif
3620 }
3621
3622 static void iwl3945_rx_pm_sleep_notif(struct iwl3945_priv *priv,
3623 struct iwl3945_rx_mem_buffer *rxb)
3624 {
3625 #ifdef CONFIG_IWL3945_DEBUG
3626 struct iwl3945_rx_packet *pkt = (void *)rxb->skb->data;
3627 struct iwl3945_sleep_notification *sleep = &(pkt->u.sleep_notif);
3628 IWL_DEBUG_RX("sleep mode: %d, src: %d\n",
3629 sleep->pm_sleep_mode, sleep->pm_wakeup_src);
3630 #endif
3631 }
3632
3633 static void iwl3945_rx_pm_debug_statistics_notif(struct iwl3945_priv *priv,
3634 struct iwl3945_rx_mem_buffer *rxb)
3635 {
3636 struct iwl3945_rx_packet *pkt = (void *)rxb->skb->data;
3637 IWL_DEBUG_RADIO("Dumping %d bytes of unhandled "
3638 "notification for %s:\n",
3639 le32_to_cpu(pkt->len), get_cmd_string(pkt->hdr.cmd));
3640 iwl3945_print_hex_dump(IWL_DL_RADIO, pkt->u.raw, le32_to_cpu(pkt->len));
3641 }
3642
3643 static void iwl3945_bg_beacon_update(struct work_struct *work)
3644 {
3645 struct iwl3945_priv *priv =
3646 container_of(work, struct iwl3945_priv, beacon_update);
3647 struct sk_buff *beacon;
3648
3649 /* Pull updated AP beacon from mac80211. will fail if not in AP mode */
3650 beacon = ieee80211_beacon_get(priv->hw, priv->interface_id, NULL);
3651
3652 if (!beacon) {
3653 IWL_ERROR("update beacon failed\n");
3654 return;
3655 }
3656
3657 mutex_lock(&priv->mutex);
3658 /* new beacon skb is allocated every time; dispose previous.*/
3659 if (priv->ibss_beacon)
3660 dev_kfree_skb(priv->ibss_beacon);
3661
3662 priv->ibss_beacon = beacon;
3663 mutex_unlock(&priv->mutex);
3664
3665 iwl3945_send_beacon_cmd(priv);
3666 }
3667
3668 static void iwl3945_rx_beacon_notif(struct iwl3945_priv *priv,
3669 struct iwl3945_rx_mem_buffer *rxb)
3670 {
3671 #ifdef CONFIG_IWL3945_DEBUG
3672 struct iwl3945_rx_packet *pkt = (void *)rxb->skb->data;
3673 struct iwl3945_beacon_notif *beacon = &(pkt->u.beacon_status);
3674 u8 rate = beacon->beacon_notify_hdr.rate;
3675
3676 IWL_DEBUG_RX("beacon status %x retries %d iss %d "
3677 "tsf %d %d rate %d\n",
3678 le32_to_cpu(beacon->beacon_notify_hdr.status) & TX_STATUS_MSK,
3679 beacon->beacon_notify_hdr.failure_frame,
3680 le32_to_cpu(beacon->ibss_mgr_status),
3681 le32_to_cpu(beacon->high_tsf),
3682 le32_to_cpu(beacon->low_tsf), rate);
3683 #endif
3684
3685 if ((priv->iw_mode == IEEE80211_IF_TYPE_AP) &&
3686 (!test_bit(STATUS_EXIT_PENDING, &priv->status)))
3687 queue_work(priv->workqueue, &priv->beacon_update);
3688 }
3689
3690 /* Service response to REPLY_SCAN_CMD (0x80) */
3691 static void iwl3945_rx_reply_scan(struct iwl3945_priv *priv,
3692 struct iwl3945_rx_mem_buffer *rxb)
3693 {
3694 #ifdef CONFIG_IWL3945_DEBUG
3695 struct iwl3945_rx_packet *pkt = (void *)rxb->skb->data;
3696 struct iwl3945_scanreq_notification *notif =
3697 (struct iwl3945_scanreq_notification *)pkt->u.raw;
3698
3699 IWL_DEBUG_RX("Scan request status = 0x%x\n", notif->status);
3700 #endif
3701 }
3702
3703 /* Service SCAN_START_NOTIFICATION (0x82) */
3704 static void iwl3945_rx_scan_start_notif(struct iwl3945_priv *priv,
3705 struct iwl3945_rx_mem_buffer *rxb)
3706 {
3707 struct iwl3945_rx_packet *pkt = (void *)rxb->skb->data;
3708 struct iwl3945_scanstart_notification *notif =
3709 (struct iwl3945_scanstart_notification *)pkt->u.raw;
3710 priv->scan_start_tsf = le32_to_cpu(notif->tsf_low);
3711 IWL_DEBUG_SCAN("Scan start: "
3712 "%d [802.11%s] "
3713 "(TSF: 0x%08X:%08X) - %d (beacon timer %u)\n",
3714 notif->channel,
3715 notif->band ? "bg" : "a",
3716 notif->tsf_high,
3717 notif->tsf_low, notif->status, notif->beacon_timer);
3718 }
3719
3720 /* Service SCAN_RESULTS_NOTIFICATION (0x83) */
3721 static void iwl3945_rx_scan_results_notif(struct iwl3945_priv *priv,
3722 struct iwl3945_rx_mem_buffer *rxb)
3723 {
3724 struct iwl3945_rx_packet *pkt = (void *)rxb->skb->data;
3725 struct iwl3945_scanresults_notification *notif =
3726 (struct iwl3945_scanresults_notification *)pkt->u.raw;
3727
3728 IWL_DEBUG_SCAN("Scan ch.res: "
3729 "%d [802.11%s] "
3730 "(TSF: 0x%08X:%08X) - %d "
3731 "elapsed=%lu usec (%dms since last)\n",
3732 notif->channel,
3733 notif->band ? "bg" : "a",
3734 le32_to_cpu(notif->tsf_high),
3735 le32_to_cpu(notif->tsf_low),
3736 le32_to_cpu(notif->statistics[0]),
3737 le32_to_cpu(notif->tsf_low) - priv->scan_start_tsf,
3738 jiffies_to_msecs(elapsed_jiffies
3739 (priv->last_scan_jiffies, jiffies)));
3740
3741 priv->last_scan_jiffies = jiffies;
3742 priv->next_scan_jiffies = 0;
3743 }
3744
3745 /* Service SCAN_COMPLETE_NOTIFICATION (0x84) */
3746 static void iwl3945_rx_scan_complete_notif(struct iwl3945_priv *priv,
3747 struct iwl3945_rx_mem_buffer *rxb)
3748 {
3749 struct iwl3945_rx_packet *pkt = (void *)rxb->skb->data;
3750 struct iwl3945_scancomplete_notification *scan_notif = (void *)pkt->u.raw;
3751
3752 IWL_DEBUG_SCAN("Scan complete: %d channels (TSF 0x%08X:%08X) - %d\n",
3753 scan_notif->scanned_channels,
3754 scan_notif->tsf_low,
3755 scan_notif->tsf_high, scan_notif->status);
3756
3757 /* The HW is no longer scanning */
3758 clear_bit(STATUS_SCAN_HW, &priv->status);
3759
3760 /* The scan completion notification came in, so kill that timer... */
3761 cancel_delayed_work(&priv->scan_check);
3762
3763 IWL_DEBUG_INFO("Scan pass on %sGHz took %dms\n",
3764 (priv->scan_bands == 2) ? "2.4" : "5.2",
3765 jiffies_to_msecs(elapsed_jiffies
3766 (priv->scan_pass_start, jiffies)));
3767
3768 /* Remove this scanned band from the list
3769 * of pending bands to scan */
3770 priv->scan_bands--;
3771
3772 /* If a request to abort was given, or the scan did not succeed
3773 * then we reset the scan state machine and terminate,
3774 * re-queuing another scan if one has been requested */
3775 if (test_bit(STATUS_SCAN_ABORTING, &priv->status)) {
3776 IWL_DEBUG_INFO("Aborted scan completed.\n");
3777 clear_bit(STATUS_SCAN_ABORTING, &priv->status);
3778 } else {
3779 /* If there are more bands on this scan pass reschedule */
3780 if (priv->scan_bands > 0)
3781 goto reschedule;
3782 }
3783
3784 priv->last_scan_jiffies = jiffies;
3785 priv->next_scan_jiffies = 0;
3786 IWL_DEBUG_INFO("Setting scan to off\n");
3787
3788 clear_bit(STATUS_SCANNING, &priv->status);
3789
3790 IWL_DEBUG_INFO("Scan took %dms\n",
3791 jiffies_to_msecs(elapsed_jiffies(priv->scan_start, jiffies)));
3792
3793 queue_work(priv->workqueue, &priv->scan_completed);
3794
3795 return;
3796
3797 reschedule:
3798 priv->scan_pass_start = jiffies;
3799 queue_work(priv->workqueue, &priv->request_scan);
3800 }
3801
3802 /* Handle notification from uCode that card's power state is changing
3803 * due to software, hardware, or critical temperature RFKILL */
3804 static void iwl3945_rx_card_state_notif(struct iwl3945_priv *priv,
3805 struct iwl3945_rx_mem_buffer *rxb)
3806 {
3807 struct iwl3945_rx_packet *pkt = (void *)rxb->skb->data;
3808 u32 flags = le32_to_cpu(pkt->u.card_state_notif.flags);
3809 unsigned long status = priv->status;
3810
3811 IWL_DEBUG_RF_KILL("Card state received: HW:%s SW:%s\n",
3812 (flags & HW_CARD_DISABLED) ? "Kill" : "On",
3813 (flags & SW_CARD_DISABLED) ? "Kill" : "On");
3814
3815 iwl3945_write32(priv, CSR_UCODE_DRV_GP1_SET,
3816 CSR_UCODE_DRV_GP1_BIT_CMD_BLOCKED);
3817
3818 if (flags & HW_CARD_DISABLED)
3819 set_bit(STATUS_RF_KILL_HW, &priv->status);
3820 else
3821 clear_bit(STATUS_RF_KILL_HW, &priv->status);
3822
3823
3824 if (flags & SW_CARD_DISABLED)
3825 set_bit(STATUS_RF_KILL_SW, &priv->status);
3826 else
3827 clear_bit(STATUS_RF_KILL_SW, &priv->status);
3828
3829 iwl3945_scan_cancel(priv);
3830
3831 if ((test_bit(STATUS_RF_KILL_HW, &status) !=
3832 test_bit(STATUS_RF_KILL_HW, &priv->status)) ||
3833 (test_bit(STATUS_RF_KILL_SW, &status) !=
3834 test_bit(STATUS_RF_KILL_SW, &priv->status)))
3835 queue_work(priv->workqueue, &priv->rf_kill);
3836 else
3837 wake_up_interruptible(&priv->wait_command_queue);
3838 }
3839
3840 /**
3841 * iwl3945_setup_rx_handlers - Initialize Rx handler callbacks
3842 *
3843 * Setup the RX handlers for each of the reply types sent from the uCode
3844 * to the host.
3845 *
3846 * This function chains into the hardware specific files for them to setup
3847 * any hardware specific handlers as well.
3848 */
3849 static void iwl3945_setup_rx_handlers(struct iwl3945_priv *priv)
3850 {
3851 priv->rx_handlers[REPLY_ALIVE] = iwl3945_rx_reply_alive;
3852 priv->rx_handlers[REPLY_ADD_STA] = iwl3945_rx_reply_add_sta;
3853 priv->rx_handlers[REPLY_ERROR] = iwl3945_rx_reply_error;
3854 priv->rx_handlers[CHANNEL_SWITCH_NOTIFICATION] = iwl3945_rx_csa;
3855 priv->rx_handlers[SPECTRUM_MEASURE_NOTIFICATION] =
3856 iwl3945_rx_spectrum_measure_notif;
3857 priv->rx_handlers[PM_SLEEP_NOTIFICATION] = iwl3945_rx_pm_sleep_notif;
3858 priv->rx_handlers[PM_DEBUG_STATISTIC_NOTIFIC] =
3859 iwl3945_rx_pm_debug_statistics_notif;
3860 priv->rx_handlers[BEACON_NOTIFICATION] = iwl3945_rx_beacon_notif;
3861
3862 /*
3863 * The same handler is used for both the REPLY to a discrete
3864 * statistics request from the host as well as for the periodic
3865 * statistics notifications (after received beacons) from the uCode.
3866 */
3867 priv->rx_handlers[REPLY_STATISTICS_CMD] = iwl3945_hw_rx_statistics;
3868 priv->rx_handlers[STATISTICS_NOTIFICATION] = iwl3945_hw_rx_statistics;
3869
3870 priv->rx_handlers[REPLY_SCAN_CMD] = iwl3945_rx_reply_scan;
3871 priv->rx_handlers[SCAN_START_NOTIFICATION] = iwl3945_rx_scan_start_notif;
3872 priv->rx_handlers[SCAN_RESULTS_NOTIFICATION] =
3873 iwl3945_rx_scan_results_notif;
3874 priv->rx_handlers[SCAN_COMPLETE_NOTIFICATION] =
3875 iwl3945_rx_scan_complete_notif;
3876 priv->rx_handlers[CARD_STATE_NOTIFICATION] = iwl3945_rx_card_state_notif;
3877 priv->rx_handlers[REPLY_TX] = iwl3945_rx_reply_tx;
3878
3879 /* Set up hardware specific Rx handlers */
3880 iwl3945_hw_rx_handler_setup(priv);
3881 }
3882
3883 /**
3884 * iwl3945_tx_cmd_complete - Pull unused buffers off the queue and reclaim them
3885 * @rxb: Rx buffer to reclaim
3886 *
3887 * If an Rx buffer has an async callback associated with it the callback
3888 * will be executed. The attached skb (if present) will only be freed
3889 * if the callback returns 1
3890 */
3891 static void iwl3945_tx_cmd_complete(struct iwl3945_priv *priv,
3892 struct iwl3945_rx_mem_buffer *rxb)
3893 {
3894 struct iwl3945_rx_packet *pkt = (struct iwl3945_rx_packet *)rxb->skb->data;
3895 u16 sequence = le16_to_cpu(pkt->hdr.sequence);
3896 int txq_id = SEQ_TO_QUEUE(sequence);
3897 int index = SEQ_TO_INDEX(sequence);
3898 int huge = sequence & SEQ_HUGE_FRAME;
3899 int cmd_index;
3900 struct iwl3945_cmd *cmd;
3901
3902 /* If a Tx command is being handled and it isn't in the actual
3903 * command queue then there a command routing bug has been introduced
3904 * in the queue management code. */
3905 if (txq_id != IWL_CMD_QUEUE_NUM)
3906 IWL_ERROR("Error wrong command queue %d command id 0x%X\n",
3907 txq_id, pkt->hdr.cmd);
3908 BUG_ON(txq_id != IWL_CMD_QUEUE_NUM);
3909
3910 cmd_index = get_cmd_index(&priv->txq[IWL_CMD_QUEUE_NUM].q, index, huge);
3911 cmd = &priv->txq[IWL_CMD_QUEUE_NUM].cmd[cmd_index];
3912
3913 /* Input error checking is done when commands are added to queue. */
3914 if (cmd->meta.flags & CMD_WANT_SKB) {
3915 cmd->meta.source->u.skb = rxb->skb;
3916 rxb->skb = NULL;
3917 } else if (cmd->meta.u.callback &&
3918 !cmd->meta.u.callback(priv, cmd, rxb->skb))
3919 rxb->skb = NULL;
3920
3921 iwl3945_tx_queue_reclaim(priv, txq_id, index);
3922
3923 if (!(cmd->meta.flags & CMD_ASYNC)) {
3924 clear_bit(STATUS_HCMD_ACTIVE, &priv->status);
3925 wake_up_interruptible(&priv->wait_command_queue);
3926 }
3927 }
3928
3929 /************************** RX-FUNCTIONS ****************************/
3930 /*
3931 * Rx theory of operation
3932 *
3933 * The host allocates 32 DMA target addresses and passes the host address
3934 * to the firmware at register IWL_RFDS_TABLE_LOWER + N * RFD_SIZE where N is
3935 * 0 to 31
3936 *
3937 * Rx Queue Indexes
3938 * The host/firmware share two index registers for managing the Rx buffers.
3939 *
3940 * The READ index maps to the first position that the firmware may be writing
3941 * to -- the driver can read up to (but not including) this position and get
3942 * good data.
3943 * The READ index is managed by the firmware once the card is enabled.
3944 *
3945 * The WRITE index maps to the last position the driver has read from -- the
3946 * position preceding WRITE is the last slot the firmware can place a packet.
3947 *
3948 * The queue is empty (no good data) if WRITE = READ - 1, and is full if
3949 * WRITE = READ.
3950 *
3951 * During initialization, the host sets up the READ queue position to the first
3952 * INDEX position, and WRITE to the last (READ - 1 wrapped)
3953 *
3954 * When the firmware places a packet in a buffer, it will advance the READ index
3955 * and fire the RX interrupt. The driver can then query the READ index and
3956 * process as many packets as possible, moving the WRITE index forward as it
3957 * resets the Rx queue buffers with new memory.
3958 *
3959 * The management in the driver is as follows:
3960 * + A list of pre-allocated SKBs is stored in iwl->rxq->rx_free. When
3961 * iwl->rxq->free_count drops to or below RX_LOW_WATERMARK, work is scheduled
3962 * to replenish the iwl->rxq->rx_free.
3963 * + In iwl3945_rx_replenish (scheduled) if 'processed' != 'read' then the
3964 * iwl->rxq is replenished and the READ INDEX is updated (updating the
3965 * 'processed' and 'read' driver indexes as well)
3966 * + A received packet is processed and handed to the kernel network stack,
3967 * detached from the iwl->rxq. The driver 'processed' index is updated.
3968 * + The Host/Firmware iwl->rxq is replenished at tasklet time from the rx_free
3969 * list. If there are no allocated buffers in iwl->rxq->rx_free, the READ
3970 * INDEX is not incremented and iwl->status(RX_STALLED) is set. If there
3971 * were enough free buffers and RX_STALLED is set it is cleared.
3972 *
3973 *
3974 * Driver sequence:
3975 *
3976 * iwl3945_rx_queue_alloc() Allocates rx_free
3977 * iwl3945_rx_replenish() Replenishes rx_free list from rx_used, and calls
3978 * iwl3945_rx_queue_restock
3979 * iwl3945_rx_queue_restock() Moves available buffers from rx_free into Rx
3980 * queue, updates firmware pointers, and updates
3981 * the WRITE index. If insufficient rx_free buffers
3982 * are available, schedules iwl3945_rx_replenish
3983 *
3984 * -- enable interrupts --
3985 * ISR - iwl3945_rx() Detach iwl3945_rx_mem_buffers from pool up to the
3986 * READ INDEX, detaching the SKB from the pool.
3987 * Moves the packet buffer from queue to rx_used.
3988 * Calls iwl3945_rx_queue_restock to refill any empty
3989 * slots.
3990 * ...
3991 *
3992 */
3993
3994 /**
3995 * iwl3945_rx_queue_space - Return number of free slots available in queue.
3996 */
3997 static int iwl3945_rx_queue_space(const struct iwl3945_rx_queue *q)
3998 {
3999 int s = q->read - q->write;
4000 if (s <= 0)
4001 s += RX_QUEUE_SIZE;
4002 /* keep some buffer to not confuse full and empty queue */
4003 s -= 2;
4004 if (s < 0)
4005 s = 0;
4006 return s;
4007 }
4008
4009 /**
4010 * iwl3945_rx_queue_update_write_ptr - Update the write pointer for the RX queue
4011 */
4012 int iwl3945_rx_queue_update_write_ptr(struct iwl3945_priv *priv, struct iwl3945_rx_queue *q)
4013 {
4014 u32 reg = 0;
4015 int rc = 0;
4016 unsigned long flags;
4017
4018 spin_lock_irqsave(&q->lock, flags);
4019
4020 if (q->need_update == 0)
4021 goto exit_unlock;
4022
4023 /* If power-saving is in use, make sure device is awake */
4024 if (test_bit(STATUS_POWER_PMI, &priv->status)) {
4025 reg = iwl3945_read32(priv, CSR_UCODE_DRV_GP1);
4026
4027 if (reg & CSR_UCODE_DRV_GP1_BIT_MAC_SLEEP) {
4028 iwl3945_set_bit(priv, CSR_GP_CNTRL,
4029 CSR_GP_CNTRL_REG_FLAG_MAC_ACCESS_REQ);
4030 goto exit_unlock;
4031 }
4032
4033 rc = iwl3945_grab_nic_access(priv);
4034 if (rc)
4035 goto exit_unlock;
4036
4037 /* Device expects a multiple of 8 */
4038 iwl3945_write_direct32(priv, FH_RSCSR_CHNL0_WPTR,
4039 q->write & ~0x7);
4040 iwl3945_release_nic_access(priv);
4041
4042 /* Else device is assumed to be awake */
4043 } else
4044 /* Device expects a multiple of 8 */
4045 iwl3945_write32(priv, FH_RSCSR_CHNL0_WPTR, q->write & ~0x7);
4046
4047
4048 q->need_update = 0;
4049
4050 exit_unlock:
4051 spin_unlock_irqrestore(&q->lock, flags);
4052 return rc;
4053 }
4054
4055 /**
4056 * iwl3945_dma_addr2rbd_ptr - convert a DMA address to a uCode read buffer ptr
4057 */
4058 static inline __le32 iwl3945_dma_addr2rbd_ptr(struct iwl3945_priv *priv,
4059 dma_addr_t dma_addr)
4060 {
4061 return cpu_to_le32((u32)dma_addr);
4062 }
4063
4064 /**
4065 * iwl3945_rx_queue_restock - refill RX queue from pre-allocated pool
4066 *
4067 * If there are slots in the RX queue that need to be restocked,
4068 * and we have free pre-allocated buffers, fill the ranks as much
4069 * as we can, pulling from rx_free.
4070 *
4071 * This moves the 'write' index forward to catch up with 'processed', and
4072 * also updates the memory address in the firmware to reference the new
4073 * target buffer.
4074 */
4075 static int iwl3945_rx_queue_restock(struct iwl3945_priv *priv)
4076 {
4077 struct iwl3945_rx_queue *rxq = &priv->rxq;
4078 struct list_head *element;
4079 struct iwl3945_rx_mem_buffer *rxb;
4080 unsigned long flags;
4081 int write, rc;
4082
4083 spin_lock_irqsave(&rxq->lock, flags);
4084 write = rxq->write & ~0x7;
4085 while ((iwl3945_rx_queue_space(rxq) > 0) && (rxq->free_count)) {
4086 /* Get next free Rx buffer, remove from free list */
4087 element = rxq->rx_free.next;
4088 rxb = list_entry(element, struct iwl3945_rx_mem_buffer, list);
4089 list_del(element);
4090
4091 /* Point to Rx buffer via next RBD in circular buffer */
4092 rxq->bd[rxq->write] = iwl3945_dma_addr2rbd_ptr(priv, rxb->dma_addr);
4093 rxq->queue[rxq->write] = rxb;
4094 rxq->write = (rxq->write + 1) & RX_QUEUE_MASK;
4095 rxq->free_count--;
4096 }
4097 spin_unlock_irqrestore(&rxq->lock, flags);
4098 /* If the pre-allocated buffer pool is dropping low, schedule to
4099 * refill it */
4100 if (rxq->free_count <= RX_LOW_WATERMARK)
4101 queue_work(priv->workqueue, &priv->rx_replenish);
4102
4103
4104 /* If we've added more space for the firmware to place data, tell it.
4105 * Increment device's write pointer in multiples of 8. */
4106 if ((write != (rxq->write & ~0x7))
4107 || (abs(rxq->write - rxq->read) > 7)) {
4108 spin_lock_irqsave(&rxq->lock, flags);
4109 rxq->need_update = 1;
4110 spin_unlock_irqrestore(&rxq->lock, flags);
4111 rc = iwl3945_rx_queue_update_write_ptr(priv, rxq);
4112 if (rc)
4113 return rc;
4114 }
4115
4116 return 0;
4117 }
4118
4119 /**
4120 * iwl3945_rx_replenish - Move all used packet from rx_used to rx_free
4121 *
4122 * When moving to rx_free an SKB is allocated for the slot.
4123 *
4124 * Also restock the Rx queue via iwl3945_rx_queue_restock.
4125 * This is called as a scheduled work item (except for during initialization)
4126 */
4127 static void iwl3945_rx_allocate(struct iwl3945_priv *priv)
4128 {
4129 struct iwl3945_rx_queue *rxq = &priv->rxq;
4130 struct list_head *element;
4131 struct iwl3945_rx_mem_buffer *rxb;
4132 unsigned long flags;
4133 spin_lock_irqsave(&rxq->lock, flags);
4134 while (!list_empty(&rxq->rx_used)) {
4135 element = rxq->rx_used.next;
4136 rxb = list_entry(element, struct iwl3945_rx_mem_buffer, list);
4137
4138 /* Alloc a new receive buffer */
4139 rxb->skb =
4140 alloc_skb(IWL_RX_BUF_SIZE, __GFP_NOWARN | GFP_ATOMIC);
4141 if (!rxb->skb) {
4142 if (net_ratelimit())
4143 printk(KERN_CRIT DRV_NAME
4144 ": Can not allocate SKB buffers\n");
4145 /* We don't reschedule replenish work here -- we will
4146 * call the restock method and if it still needs
4147 * more buffers it will schedule replenish */
4148 break;
4149 }
4150 priv->alloc_rxb_skb++;
4151 list_del(element);
4152
4153 /* Get physical address of RB/SKB */
4154 rxb->dma_addr =
4155 pci_map_single(priv->pci_dev, rxb->skb->data,
4156 IWL_RX_BUF_SIZE, PCI_DMA_FROMDEVICE);
4157 list_add_tail(&rxb->list, &rxq->rx_free);
4158 rxq->free_count++;
4159 }
4160 spin_unlock_irqrestore(&rxq->lock, flags);
4161 }
4162
4163 /*
4164 * this should be called while priv->lock is locked
4165 */
4166 void __iwl3945_rx_replenish(void *data)
4167 {
4168 struct iwl3945_priv *priv = data;
4169
4170 iwl3945_rx_allocate(priv);
4171 iwl3945_rx_queue_restock(priv);
4172 }
4173
4174
4175 void iwl3945_rx_replenish(void *data)
4176 {
4177 struct iwl3945_priv *priv = data;
4178 unsigned long flags;
4179
4180 iwl3945_rx_allocate(priv);
4181
4182 spin_lock_irqsave(&priv->lock, flags);
4183 iwl3945_rx_queue_restock(priv);
4184 spin_unlock_irqrestore(&priv->lock, flags);
4185 }
4186
4187 /* Assumes that the skb field of the buffers in 'pool' is kept accurate.
4188 * If an SKB has been detached, the POOL needs to have its SKB set to NULL
4189 * This free routine walks the list of POOL entries and if SKB is set to
4190 * non NULL it is unmapped and freed
4191 */
4192 static void iwl3945_rx_queue_free(struct iwl3945_priv *priv, struct iwl3945_rx_queue *rxq)
4193 {
4194 int i;
4195 for (i = 0; i < RX_QUEUE_SIZE + RX_FREE_BUFFERS; i++) {
4196 if (rxq->pool[i].skb != NULL) {
4197 pci_unmap_single(priv->pci_dev,
4198 rxq->pool[i].dma_addr,
4199 IWL_RX_BUF_SIZE, PCI_DMA_FROMDEVICE);
4200 dev_kfree_skb(rxq->pool[i].skb);
4201 }
4202 }
4203
4204 pci_free_consistent(priv->pci_dev, 4 * RX_QUEUE_SIZE, rxq->bd,
4205 rxq->dma_addr);
4206 rxq->bd = NULL;
4207 }
4208
4209 int iwl3945_rx_queue_alloc(struct iwl3945_priv *priv)
4210 {
4211 struct iwl3945_rx_queue *rxq = &priv->rxq;
4212 struct pci_dev *dev = priv->pci_dev;
4213 int i;
4214
4215 spin_lock_init(&rxq->lock);
4216 INIT_LIST_HEAD(&rxq->rx_free);
4217 INIT_LIST_HEAD(&rxq->rx_used);
4218
4219 /* Alloc the circular buffer of Read Buffer Descriptors (RBDs) */
4220 rxq->bd = pci_alloc_consistent(dev, 4 * RX_QUEUE_SIZE, &rxq->dma_addr);
4221 if (!rxq->bd)
4222 return -ENOMEM;
4223
4224 /* Fill the rx_used queue with _all_ of the Rx buffers */
4225 for (i = 0; i < RX_FREE_BUFFERS + RX_QUEUE_SIZE; i++)
4226 list_add_tail(&rxq->pool[i].list, &rxq->rx_used);
4227
4228 /* Set us so that we have processed and used all buffers, but have
4229 * not restocked the Rx queue with fresh buffers */
4230 rxq->read = rxq->write = 0;
4231 rxq->free_count = 0;
4232 rxq->need_update = 0;
4233 return 0;
4234 }
4235
4236 void iwl3945_rx_queue_reset(struct iwl3945_priv *priv, struct iwl3945_rx_queue *rxq)
4237 {
4238 unsigned long flags;
4239 int i;
4240 spin_lock_irqsave(&rxq->lock, flags);
4241 INIT_LIST_HEAD(&rxq->rx_free);
4242 INIT_LIST_HEAD(&rxq->rx_used);
4243 /* Fill the rx_used queue with _all_ of the Rx buffers */
4244 for (i = 0; i < RX_FREE_BUFFERS + RX_QUEUE_SIZE; i++) {
4245 /* In the reset function, these buffers may have been allocated
4246 * to an SKB, so we need to unmap and free potential storage */
4247 if (rxq->pool[i].skb != NULL) {
4248 pci_unmap_single(priv->pci_dev,
4249 rxq->pool[i].dma_addr,
4250 IWL_RX_BUF_SIZE, PCI_DMA_FROMDEVICE);
4251 priv->alloc_rxb_skb--;
4252 dev_kfree_skb(rxq->pool[i].skb);
4253 rxq->pool[i].skb = NULL;
4254 }
4255 list_add_tail(&rxq->pool[i].list, &rxq->rx_used);
4256 }
4257
4258 /* Set us so that we have processed and used all buffers, but have
4259 * not restocked the Rx queue with fresh buffers */
4260 rxq->read = rxq->write = 0;
4261 rxq->free_count = 0;
4262 spin_unlock_irqrestore(&rxq->lock, flags);
4263 }
4264
4265 /* Convert linear signal-to-noise ratio into dB */
4266 static u8 ratio2dB[100] = {
4267 /* 0 1 2 3 4 5 6 7 8 9 */
4268 0, 0, 6, 10, 12, 14, 16, 17, 18, 19, /* 00 - 09 */
4269 20, 21, 22, 22, 23, 23, 24, 25, 26, 26, /* 10 - 19 */
4270 26, 26, 26, 27, 27, 28, 28, 28, 29, 29, /* 20 - 29 */
4271 29, 30, 30, 30, 31, 31, 31, 31, 32, 32, /* 30 - 39 */
4272 32, 32, 32, 33, 33, 33, 33, 33, 34, 34, /* 40 - 49 */
4273 34, 34, 34, 34, 35, 35, 35, 35, 35, 35, /* 50 - 59 */
4274 36, 36, 36, 36, 36, 36, 36, 37, 37, 37, /* 60 - 69 */
4275 37, 37, 37, 37, 37, 38, 38, 38, 38, 38, /* 70 - 79 */
4276 38, 38, 38, 38, 38, 39, 39, 39, 39, 39, /* 80 - 89 */
4277 39, 39, 39, 39, 39, 40, 40, 40, 40, 40 /* 90 - 99 */
4278 };
4279
4280 /* Calculates a relative dB value from a ratio of linear
4281 * (i.e. not dB) signal levels.
4282 * Conversion assumes that levels are voltages (20*log), not powers (10*log). */
4283 int iwl3945_calc_db_from_ratio(int sig_ratio)
4284 {
4285 /* Anything above 1000:1 just report as 60 dB */
4286 if (sig_ratio > 1000)
4287 return 60;
4288
4289 /* Above 100:1, divide by 10 and use table,
4290 * add 20 dB to make up for divide by 10 */
4291 if (sig_ratio > 100)
4292 return (20 + (int)ratio2dB[sig_ratio/10]);
4293
4294 /* We shouldn't see this */
4295 if (sig_ratio < 1)
4296 return 0;
4297
4298 /* Use table for ratios 1:1 - 99:1 */
4299 return (int)ratio2dB[sig_ratio];
4300 }
4301
4302 #define PERFECT_RSSI (-20) /* dBm */
4303 #define WORST_RSSI (-95) /* dBm */
4304 #define RSSI_RANGE (PERFECT_RSSI - WORST_RSSI)
4305
4306 /* Calculate an indication of rx signal quality (a percentage, not dBm!).
4307 * See http://www.ces.clemson.edu/linux/signal_quality.shtml for info
4308 * about formulas used below. */
4309 int iwl3945_calc_sig_qual(int rssi_dbm, int noise_dbm)
4310 {
4311 int sig_qual;
4312 int degradation = PERFECT_RSSI - rssi_dbm;
4313
4314 /* If we get a noise measurement, use signal-to-noise ratio (SNR)
4315 * as indicator; formula is (signal dbm - noise dbm).
4316 * SNR at or above 40 is a great signal (100%).
4317 * Below that, scale to fit SNR of 0 - 40 dB within 0 - 100% indicator.
4318 * Weakest usable signal is usually 10 - 15 dB SNR. */
4319 if (noise_dbm) {
4320 if (rssi_dbm - noise_dbm >= 40)
4321 return 100;
4322 else if (rssi_dbm < noise_dbm)
4323 return 0;
4324 sig_qual = ((rssi_dbm - noise_dbm) * 5) / 2;
4325
4326 /* Else use just the signal level.
4327 * This formula is a least squares fit of data points collected and
4328 * compared with a reference system that had a percentage (%) display
4329 * for signal quality. */
4330 } else
4331 sig_qual = (100 * (RSSI_RANGE * RSSI_RANGE) - degradation *
4332 (15 * RSSI_RANGE + 62 * degradation)) /
4333 (RSSI_RANGE * RSSI_RANGE);
4334
4335 if (sig_qual > 100)
4336 sig_qual = 100;
4337 else if (sig_qual < 1)
4338 sig_qual = 0;
4339
4340 return sig_qual;
4341 }
4342
4343 /**
4344 * iwl3945_rx_handle - Main entry function for receiving responses from uCode
4345 *
4346 * Uses the priv->rx_handlers callback function array to invoke
4347 * the appropriate handlers, including command responses,
4348 * frame-received notifications, and other notifications.
4349 */
4350 static void iwl3945_rx_handle(struct iwl3945_priv *priv)
4351 {
4352 struct iwl3945_rx_mem_buffer *rxb;
4353 struct iwl3945_rx_packet *pkt;
4354 struct iwl3945_rx_queue *rxq = &priv->rxq;
4355 u32 r, i;
4356 int reclaim;
4357 unsigned long flags;
4358 u8 fill_rx = 0;
4359 u32 count = 0;
4360
4361 /* uCode's read index (stored in shared DRAM) indicates the last Rx
4362 * buffer that the driver may process (last buffer filled by ucode). */
4363 r = iwl3945_hw_get_rx_read(priv);
4364 i = rxq->read;
4365
4366 if (iwl3945_rx_queue_space(rxq) > (RX_QUEUE_SIZE / 2))
4367 fill_rx = 1;
4368 /* Rx interrupt, but nothing sent from uCode */
4369 if (i == r)
4370 IWL_DEBUG(IWL_DL_RX | IWL_DL_ISR, "r = %d, i = %d\n", r, i);
4371
4372 while (i != r) {
4373 rxb = rxq->queue[i];
4374
4375 /* If an RXB doesn't have a Rx queue slot associated with it,
4376 * then a bug has been introduced in the queue refilling
4377 * routines -- catch it here */
4378 BUG_ON(rxb == NULL);
4379
4380 rxq->queue[i] = NULL;
4381
4382 pci_dma_sync_single_for_cpu(priv->pci_dev, rxb->dma_addr,
4383 IWL_RX_BUF_SIZE,
4384 PCI_DMA_FROMDEVICE);
4385 pkt = (struct iwl3945_rx_packet *)rxb->skb->data;
4386
4387 /* Reclaim a command buffer only if this packet is a response
4388 * to a (driver-originated) command.
4389 * If the packet (e.g. Rx frame) originated from uCode,
4390 * there is no command buffer to reclaim.
4391 * Ucode should set SEQ_RX_FRAME bit if ucode-originated,
4392 * but apparently a few don't get set; catch them here. */
4393 reclaim = !(pkt->hdr.sequence & SEQ_RX_FRAME) &&
4394 (pkt->hdr.cmd != STATISTICS_NOTIFICATION) &&
4395 (pkt->hdr.cmd != REPLY_TX);
4396
4397 /* Based on type of command response or notification,
4398 * handle those that need handling via function in
4399 * rx_handlers table. See iwl3945_setup_rx_handlers() */
4400 if (priv->rx_handlers[pkt->hdr.cmd]) {
4401 IWL_DEBUG(IWL_DL_HOST_COMMAND | IWL_DL_RX | IWL_DL_ISR,
4402 "r = %d, i = %d, %s, 0x%02x\n", r, i,
4403 get_cmd_string(pkt->hdr.cmd), pkt->hdr.cmd);
4404 priv->rx_handlers[pkt->hdr.cmd] (priv, rxb);
4405 } else {
4406 /* No handling needed */
4407 IWL_DEBUG(IWL_DL_HOST_COMMAND | IWL_DL_RX | IWL_DL_ISR,
4408 "r %d i %d No handler needed for %s, 0x%02x\n",
4409 r, i, get_cmd_string(pkt->hdr.cmd),
4410 pkt->hdr.cmd);
4411 }
4412
4413 if (reclaim) {
4414 /* Invoke any callbacks, transfer the skb to caller, and
4415 * fire off the (possibly) blocking iwl3945_send_cmd()
4416 * as we reclaim the driver command queue */
4417 if (rxb && rxb->skb)
4418 iwl3945_tx_cmd_complete(priv, rxb);
4419 else
4420 IWL_WARNING("Claim null rxb?\n");
4421 }
4422
4423 /* For now we just don't re-use anything. We can tweak this
4424 * later to try and re-use notification packets and SKBs that
4425 * fail to Rx correctly */
4426 if (rxb->skb != NULL) {
4427 priv->alloc_rxb_skb--;
4428 dev_kfree_skb_any(rxb->skb);
4429 rxb->skb = NULL;
4430 }
4431
4432 pci_unmap_single(priv->pci_dev, rxb->dma_addr,
4433 IWL_RX_BUF_SIZE, PCI_DMA_FROMDEVICE);
4434 spin_lock_irqsave(&rxq->lock, flags);
4435 list_add_tail(&rxb->list, &priv->rxq.rx_used);
4436 spin_unlock_irqrestore(&rxq->lock, flags);
4437 i = (i + 1) & RX_QUEUE_MASK;
4438 /* If there are a lot of unused frames,
4439 * restock the Rx queue so ucode won't assert. */
4440 if (fill_rx) {
4441 count++;
4442 if (count >= 8) {
4443 priv->rxq.read = i;
4444 __iwl3945_rx_replenish(priv);
4445 count = 0;
4446 }
4447 }
4448 }
4449
4450 /* Backtrack one entry */
4451 priv->rxq.read = i;
4452 iwl3945_rx_queue_restock(priv);
4453 }
4454
4455 /**
4456 * iwl3945_tx_queue_update_write_ptr - Send new write index to hardware
4457 */
4458 static int iwl3945_tx_queue_update_write_ptr(struct iwl3945_priv *priv,
4459 struct iwl3945_tx_queue *txq)
4460 {
4461 u32 reg = 0;
4462 int rc = 0;
4463 int txq_id = txq->q.id;
4464
4465 if (txq->need_update == 0)
4466 return rc;
4467
4468 /* if we're trying to save power */
4469 if (test_bit(STATUS_POWER_PMI, &priv->status)) {
4470 /* wake up nic if it's powered down ...
4471 * uCode will wake up, and interrupt us again, so next
4472 * time we'll skip this part. */
4473 reg = iwl3945_read32(priv, CSR_UCODE_DRV_GP1);
4474
4475 if (reg & CSR_UCODE_DRV_GP1_BIT_MAC_SLEEP) {
4476 IWL_DEBUG_INFO("Requesting wakeup, GP1 = 0x%x\n", reg);
4477 iwl3945_set_bit(priv, CSR_GP_CNTRL,
4478 CSR_GP_CNTRL_REG_FLAG_MAC_ACCESS_REQ);
4479 return rc;
4480 }
4481
4482 /* restore this queue's parameters in nic hardware. */
4483 rc = iwl3945_grab_nic_access(priv);
4484 if (rc)
4485 return rc;
4486 iwl3945_write_direct32(priv, HBUS_TARG_WRPTR,
4487 txq->q.write_ptr | (txq_id << 8));
4488 iwl3945_release_nic_access(priv);
4489
4490 /* else not in power-save mode, uCode will never sleep when we're
4491 * trying to tx (during RFKILL, we're not trying to tx). */
4492 } else
4493 iwl3945_write32(priv, HBUS_TARG_WRPTR,
4494 txq->q.write_ptr | (txq_id << 8));
4495
4496 txq->need_update = 0;
4497
4498 return rc;
4499 }
4500
4501 #ifdef CONFIG_IWL3945_DEBUG
4502 static void iwl3945_print_rx_config_cmd(struct iwl3945_rxon_cmd *rxon)
4503 {
4504 DECLARE_MAC_BUF(mac);
4505
4506 IWL_DEBUG_RADIO("RX CONFIG:\n");
4507 iwl3945_print_hex_dump(IWL_DL_RADIO, (u8 *) rxon, sizeof(*rxon));
4508 IWL_DEBUG_RADIO("u16 channel: 0x%x\n", le16_to_cpu(rxon->channel));
4509 IWL_DEBUG_RADIO("u32 flags: 0x%08X\n", le32_to_cpu(rxon->flags));
4510 IWL_DEBUG_RADIO("u32 filter_flags: 0x%08x\n",
4511 le32_to_cpu(rxon->filter_flags));
4512 IWL_DEBUG_RADIO("u8 dev_type: 0x%x\n", rxon->dev_type);
4513 IWL_DEBUG_RADIO("u8 ofdm_basic_rates: 0x%02x\n",
4514 rxon->ofdm_basic_rates);
4515 IWL_DEBUG_RADIO("u8 cck_basic_rates: 0x%02x\n", rxon->cck_basic_rates);
4516 IWL_DEBUG_RADIO("u8[6] node_addr: %s\n",
4517 print_mac(mac, rxon->node_addr));
4518 IWL_DEBUG_RADIO("u8[6] bssid_addr: %s\n",
4519 print_mac(mac, rxon->bssid_addr));
4520 IWL_DEBUG_RADIO("u16 assoc_id: 0x%x\n", le16_to_cpu(rxon->assoc_id));
4521 }
4522 #endif
4523
4524 static void iwl3945_enable_interrupts(struct iwl3945_priv *priv)
4525 {
4526 IWL_DEBUG_ISR("Enabling interrupts\n");
4527 set_bit(STATUS_INT_ENABLED, &priv->status);
4528 iwl3945_write32(priv, CSR_INT_MASK, CSR_INI_SET_MASK);
4529 }
4530
4531 static inline void iwl3945_disable_interrupts(struct iwl3945_priv *priv)
4532 {
4533 clear_bit(STATUS_INT_ENABLED, &priv->status);
4534
4535 /* disable interrupts from uCode/NIC to host */
4536 iwl3945_write32(priv, CSR_INT_MASK, 0x00000000);
4537
4538 /* acknowledge/clear/reset any interrupts still pending
4539 * from uCode or flow handler (Rx/Tx DMA) */
4540 iwl3945_write32(priv, CSR_INT, 0xffffffff);
4541 iwl3945_write32(priv, CSR_FH_INT_STATUS, 0xffffffff);
4542 IWL_DEBUG_ISR("Disabled interrupts\n");
4543 }
4544
4545 static const char *desc_lookup(int i)
4546 {
4547 switch (i) {
4548 case 1:
4549 return "FAIL";
4550 case 2:
4551 return "BAD_PARAM";
4552 case 3:
4553 return "BAD_CHECKSUM";
4554 case 4:
4555 return "NMI_INTERRUPT";
4556 case 5:
4557 return "SYSASSERT";
4558 case 6:
4559 return "FATAL_ERROR";
4560 }
4561
4562 return "UNKNOWN";
4563 }
4564
4565 #define ERROR_START_OFFSET (1 * sizeof(u32))
4566 #define ERROR_ELEM_SIZE (7 * sizeof(u32))
4567
4568 static void iwl3945_dump_nic_error_log(struct iwl3945_priv *priv)
4569 {
4570 u32 i;
4571 u32 desc, time, count, base, data1;
4572 u32 blink1, blink2, ilink1, ilink2;
4573 int rc;
4574
4575 base = le32_to_cpu(priv->card_alive.error_event_table_ptr);
4576
4577 if (!iwl3945_hw_valid_rtc_data_addr(base)) {
4578 IWL_ERROR("Not valid error log pointer 0x%08X\n", base);
4579 return;
4580 }
4581
4582 rc = iwl3945_grab_nic_access(priv);
4583 if (rc) {
4584 IWL_WARNING("Can not read from adapter at this time.\n");
4585 return;
4586 }
4587
4588 count = iwl3945_read_targ_mem(priv, base);
4589
4590 if (ERROR_START_OFFSET <= count * ERROR_ELEM_SIZE) {
4591 IWL_ERROR("Start IWL Error Log Dump:\n");
4592 IWL_ERROR("Status: 0x%08lX, Config: %08X count: %d\n",
4593 priv->status, priv->config, count);
4594 }
4595
4596 IWL_ERROR("Desc Time asrtPC blink2 "
4597 "ilink1 nmiPC Line\n");
4598 for (i = ERROR_START_OFFSET;
4599 i < (count * ERROR_ELEM_SIZE) + ERROR_START_OFFSET;
4600 i += ERROR_ELEM_SIZE) {
4601 desc = iwl3945_read_targ_mem(priv, base + i);
4602 time =
4603 iwl3945_read_targ_mem(priv, base + i + 1 * sizeof(u32));
4604 blink1 =
4605 iwl3945_read_targ_mem(priv, base + i + 2 * sizeof(u32));
4606 blink2 =
4607 iwl3945_read_targ_mem(priv, base + i + 3 * sizeof(u32));
4608 ilink1 =
4609 iwl3945_read_targ_mem(priv, base + i + 4 * sizeof(u32));
4610 ilink2 =
4611 iwl3945_read_targ_mem(priv, base + i + 5 * sizeof(u32));
4612 data1 =
4613 iwl3945_read_targ_mem(priv, base + i + 6 * sizeof(u32));
4614
4615 IWL_ERROR
4616 ("%-13s (#%d) %010u 0x%05X 0x%05X 0x%05X 0x%05X %u\n\n",
4617 desc_lookup(desc), desc, time, blink1, blink2,
4618 ilink1, ilink2, data1);
4619 }
4620
4621 iwl3945_release_nic_access(priv);
4622
4623 }
4624
4625 #define EVENT_START_OFFSET (6 * sizeof(u32))
4626
4627 /**
4628 * iwl3945_print_event_log - Dump error event log to syslog
4629 *
4630 * NOTE: Must be called with iwl3945_grab_nic_access() already obtained!
4631 */
4632 static void iwl3945_print_event_log(struct iwl3945_priv *priv, u32 start_idx,
4633 u32 num_events, u32 mode)
4634 {
4635 u32 i;
4636 u32 base; /* SRAM byte address of event log header */
4637 u32 event_size; /* 2 u32s, or 3 u32s if timestamp recorded */
4638 u32 ptr; /* SRAM byte address of log data */
4639 u32 ev, time, data; /* event log data */
4640
4641 if (num_events == 0)
4642 return;
4643
4644 base = le32_to_cpu(priv->card_alive.log_event_table_ptr);
4645
4646 if (mode == 0)
4647 event_size = 2 * sizeof(u32);
4648 else
4649 event_size = 3 * sizeof(u32);
4650
4651 ptr = base + EVENT_START_OFFSET + (start_idx * event_size);
4652
4653 /* "time" is actually "data" for mode 0 (no timestamp).
4654 * place event id # at far right for easier visual parsing. */
4655 for (i = 0; i < num_events; i++) {
4656 ev = iwl3945_read_targ_mem(priv, ptr);
4657 ptr += sizeof(u32);
4658 time = iwl3945_read_targ_mem(priv, ptr);
4659 ptr += sizeof(u32);
4660 if (mode == 0)
4661 IWL_ERROR("0x%08x\t%04u\n", time, ev); /* data, ev */
4662 else {
4663 data = iwl3945_read_targ_mem(priv, ptr);
4664 ptr += sizeof(u32);
4665 IWL_ERROR("%010u\t0x%08x\t%04u\n", time, data, ev);
4666 }
4667 }
4668 }
4669
4670 static void iwl3945_dump_nic_event_log(struct iwl3945_priv *priv)
4671 {
4672 int rc;
4673 u32 base; /* SRAM byte address of event log header */
4674 u32 capacity; /* event log capacity in # entries */
4675 u32 mode; /* 0 - no timestamp, 1 - timestamp recorded */
4676 u32 num_wraps; /* # times uCode wrapped to top of log */
4677 u32 next_entry; /* index of next entry to be written by uCode */
4678 u32 size; /* # entries that we'll print */
4679
4680 base = le32_to_cpu(priv->card_alive.log_event_table_ptr);
4681 if (!iwl3945_hw_valid_rtc_data_addr(base)) {
4682 IWL_ERROR("Invalid event log pointer 0x%08X\n", base);
4683 return;
4684 }
4685
4686 rc = iwl3945_grab_nic_access(priv);
4687 if (rc) {
4688 IWL_WARNING("Can not read from adapter at this time.\n");
4689 return;
4690 }
4691
4692 /* event log header */
4693 capacity = iwl3945_read_targ_mem(priv, base);
4694 mode = iwl3945_read_targ_mem(priv, base + (1 * sizeof(u32)));
4695 num_wraps = iwl3945_read_targ_mem(priv, base + (2 * sizeof(u32)));
4696 next_entry = iwl3945_read_targ_mem(priv, base + (3 * sizeof(u32)));
4697
4698 size = num_wraps ? capacity : next_entry;
4699
4700 /* bail out if nothing in log */
4701 if (size == 0) {
4702 IWL_ERROR("Start IWL Event Log Dump: nothing in log\n");
4703 iwl3945_release_nic_access(priv);
4704 return;
4705 }
4706
4707 IWL_ERROR("Start IWL Event Log Dump: display count %d, wraps %d\n",
4708 size, num_wraps);
4709
4710 /* if uCode has wrapped back to top of log, start at the oldest entry,
4711 * i.e the next one that uCode would fill. */
4712 if (num_wraps)
4713 iwl3945_print_event_log(priv, next_entry,
4714 capacity - next_entry, mode);
4715
4716 /* (then/else) start at top of log */
4717 iwl3945_print_event_log(priv, 0, next_entry, mode);
4718
4719 iwl3945_release_nic_access(priv);
4720 }
4721
4722 /**
4723 * iwl3945_irq_handle_error - called for HW or SW error interrupt from card
4724 */
4725 static void iwl3945_irq_handle_error(struct iwl3945_priv *priv)
4726 {
4727 /* Set the FW error flag -- cleared on iwl3945_down */
4728 set_bit(STATUS_FW_ERROR, &priv->status);
4729
4730 /* Cancel currently queued command. */
4731 clear_bit(STATUS_HCMD_ACTIVE, &priv->status);
4732
4733 #ifdef CONFIG_IWL3945_DEBUG
4734 if (iwl3945_debug_level & IWL_DL_FW_ERRORS) {
4735 iwl3945_dump_nic_error_log(priv);
4736 iwl3945_dump_nic_event_log(priv);
4737 iwl3945_print_rx_config_cmd(&priv->staging_rxon);
4738 }
4739 #endif
4740
4741 wake_up_interruptible(&priv->wait_command_queue);
4742
4743 /* Keep the restart process from trying to send host
4744 * commands by clearing the INIT status bit */
4745 clear_bit(STATUS_READY, &priv->status);
4746
4747 if (!test_bit(STATUS_EXIT_PENDING, &priv->status)) {
4748 IWL_DEBUG(IWL_DL_INFO | IWL_DL_FW_ERRORS,
4749 "Restarting adapter due to uCode error.\n");
4750
4751 if (iwl3945_is_associated(priv)) {
4752 memcpy(&priv->recovery_rxon, &priv->active_rxon,
4753 sizeof(priv->recovery_rxon));
4754 priv->error_recovering = 1;
4755 }
4756 queue_work(priv->workqueue, &priv->restart);
4757 }
4758 }
4759
4760 static void iwl3945_error_recovery(struct iwl3945_priv *priv)
4761 {
4762 unsigned long flags;
4763
4764 memcpy(&priv->staging_rxon, &priv->recovery_rxon,
4765 sizeof(priv->staging_rxon));
4766 priv->staging_rxon.filter_flags &= ~RXON_FILTER_ASSOC_MSK;
4767 iwl3945_commit_rxon(priv);
4768
4769 iwl3945_add_station(priv, priv->bssid, 1, 0);
4770
4771 spin_lock_irqsave(&priv->lock, flags);
4772 priv->assoc_id = le16_to_cpu(priv->staging_rxon.assoc_id);
4773 priv->error_recovering = 0;
4774 spin_unlock_irqrestore(&priv->lock, flags);
4775 }
4776
4777 static void iwl3945_irq_tasklet(struct iwl3945_priv *priv)
4778 {
4779 u32 inta, handled = 0;
4780 u32 inta_fh;
4781 unsigned long flags;
4782 #ifdef CONFIG_IWL3945_DEBUG
4783 u32 inta_mask;
4784 #endif
4785
4786 spin_lock_irqsave(&priv->lock, flags);
4787
4788 /* Ack/clear/reset pending uCode interrupts.
4789 * Note: Some bits in CSR_INT are "OR" of bits in CSR_FH_INT_STATUS,
4790 * and will clear only when CSR_FH_INT_STATUS gets cleared. */
4791 inta = iwl3945_read32(priv, CSR_INT);
4792 iwl3945_write32(priv, CSR_INT, inta);
4793
4794 /* Ack/clear/reset pending flow-handler (DMA) interrupts.
4795 * Any new interrupts that happen after this, either while we're
4796 * in this tasklet, or later, will show up in next ISR/tasklet. */
4797 inta_fh = iwl3945_read32(priv, CSR_FH_INT_STATUS);
4798 iwl3945_write32(priv, CSR_FH_INT_STATUS, inta_fh);
4799
4800 #ifdef CONFIG_IWL3945_DEBUG
4801 if (iwl3945_debug_level & IWL_DL_ISR) {
4802 /* just for debug */
4803 inta_mask = iwl3945_read32(priv, CSR_INT_MASK);
4804 IWL_DEBUG_ISR("inta 0x%08x, enabled 0x%08x, fh 0x%08x\n",
4805 inta, inta_mask, inta_fh);
4806 }
4807 #endif
4808
4809 /* Since CSR_INT and CSR_FH_INT_STATUS reads and clears are not
4810 * atomic, make sure that inta covers all the interrupts that
4811 * we've discovered, even if FH interrupt came in just after
4812 * reading CSR_INT. */
4813 if (inta_fh & CSR_FH_INT_RX_MASK)
4814 inta |= CSR_INT_BIT_FH_RX;
4815 if (inta_fh & CSR_FH_INT_TX_MASK)
4816 inta |= CSR_INT_BIT_FH_TX;
4817
4818 /* Now service all interrupt bits discovered above. */
4819 if (inta & CSR_INT_BIT_HW_ERR) {
4820 IWL_ERROR("Microcode HW error detected. Restarting.\n");
4821
4822 /* Tell the device to stop sending interrupts */
4823 iwl3945_disable_interrupts(priv);
4824
4825 iwl3945_irq_handle_error(priv);
4826
4827 handled |= CSR_INT_BIT_HW_ERR;
4828
4829 spin_unlock_irqrestore(&priv->lock, flags);
4830
4831 return;
4832 }
4833
4834 #ifdef CONFIG_IWL3945_DEBUG
4835 if (iwl3945_debug_level & (IWL_DL_ISR)) {
4836 /* NIC fires this, but we don't use it, redundant with WAKEUP */
4837 if (inta & CSR_INT_BIT_MAC_CLK_ACTV)
4838 IWL_DEBUG_ISR("Microcode started or stopped.\n");
4839
4840 /* Alive notification via Rx interrupt will do the real work */
4841 if (inta & CSR_INT_BIT_ALIVE)
4842 IWL_DEBUG_ISR("Alive interrupt\n");
4843 }
4844 #endif
4845 /* Safely ignore these bits for debug checks below */
4846 inta &= ~(CSR_INT_BIT_MAC_CLK_ACTV | CSR_INT_BIT_ALIVE);
4847
4848 /* HW RF KILL switch toggled (4965 only) */
4849 if (inta & CSR_INT_BIT_RF_KILL) {
4850 int hw_rf_kill = 0;
4851 if (!(iwl3945_read32(priv, CSR_GP_CNTRL) &
4852 CSR_GP_CNTRL_REG_FLAG_HW_RF_KILL_SW))
4853 hw_rf_kill = 1;
4854
4855 IWL_DEBUG(IWL_DL_INFO | IWL_DL_RF_KILL | IWL_DL_ISR,
4856 "RF_KILL bit toggled to %s.\n",
4857 hw_rf_kill ? "disable radio":"enable radio");
4858
4859 /* Queue restart only if RF_KILL switch was set to "kill"
4860 * when we loaded driver, and is now set to "enable".
4861 * After we're Alive, RF_KILL gets handled by
4862 * iwl_rx_card_state_notif() */
4863 if (!hw_rf_kill && !test_bit(STATUS_ALIVE, &priv->status)) {
4864 clear_bit(STATUS_RF_KILL_HW, &priv->status);
4865 queue_work(priv->workqueue, &priv->restart);
4866 }
4867
4868 handled |= CSR_INT_BIT_RF_KILL;
4869 }
4870
4871 /* Chip got too hot and stopped itself (4965 only) */
4872 if (inta & CSR_INT_BIT_CT_KILL) {
4873 IWL_ERROR("Microcode CT kill error detected.\n");
4874 handled |= CSR_INT_BIT_CT_KILL;
4875 }
4876
4877 /* Error detected by uCode */
4878 if (inta & CSR_INT_BIT_SW_ERR) {
4879 IWL_ERROR("Microcode SW error detected. Restarting 0x%X.\n",
4880 inta);
4881 iwl3945_irq_handle_error(priv);
4882 handled |= CSR_INT_BIT_SW_ERR;
4883 }
4884
4885 /* uCode wakes up after power-down sleep */
4886 if (inta & CSR_INT_BIT_WAKEUP) {
4887 IWL_DEBUG_ISR("Wakeup interrupt\n");
4888 iwl3945_rx_queue_update_write_ptr(priv, &priv->rxq);
4889 iwl3945_tx_queue_update_write_ptr(priv, &priv->txq[0]);
4890 iwl3945_tx_queue_update_write_ptr(priv, &priv->txq[1]);
4891 iwl3945_tx_queue_update_write_ptr(priv, &priv->txq[2]);
4892 iwl3945_tx_queue_update_write_ptr(priv, &priv->txq[3]);
4893 iwl3945_tx_queue_update_write_ptr(priv, &priv->txq[4]);
4894 iwl3945_tx_queue_update_write_ptr(priv, &priv->txq[5]);
4895
4896 handled |= CSR_INT_BIT_WAKEUP;
4897 }
4898
4899 /* All uCode command responses, including Tx command responses,
4900 * Rx "responses" (frame-received notification), and other
4901 * notifications from uCode come through here*/
4902 if (inta & (CSR_INT_BIT_FH_RX | CSR_INT_BIT_SW_RX)) {
4903 iwl3945_rx_handle(priv);
4904 handled |= (CSR_INT_BIT_FH_RX | CSR_INT_BIT_SW_RX);
4905 }
4906
4907 if (inta & CSR_INT_BIT_FH_TX) {
4908 IWL_DEBUG_ISR("Tx interrupt\n");
4909
4910 iwl3945_write32(priv, CSR_FH_INT_STATUS, (1 << 6));
4911 if (!iwl3945_grab_nic_access(priv)) {
4912 iwl3945_write_direct32(priv,
4913 FH_TCSR_CREDIT
4914 (ALM_FH_SRVC_CHNL), 0x0);
4915 iwl3945_release_nic_access(priv);
4916 }
4917 handled |= CSR_INT_BIT_FH_TX;
4918 }
4919
4920 if (inta & ~handled)
4921 IWL_ERROR("Unhandled INTA bits 0x%08x\n", inta & ~handled);
4922
4923 if (inta & ~CSR_INI_SET_MASK) {
4924 IWL_WARNING("Disabled INTA bits 0x%08x were pending\n",
4925 inta & ~CSR_INI_SET_MASK);
4926 IWL_WARNING(" with FH_INT = 0x%08x\n", inta_fh);
4927 }
4928
4929 /* Re-enable all interrupts */
4930 iwl3945_enable_interrupts(priv);
4931
4932 #ifdef CONFIG_IWL3945_DEBUG
4933 if (iwl3945_debug_level & (IWL_DL_ISR)) {
4934 inta = iwl3945_read32(priv, CSR_INT);
4935 inta_mask = iwl3945_read32(priv, CSR_INT_MASK);
4936 inta_fh = iwl3945_read32(priv, CSR_FH_INT_STATUS);
4937 IWL_DEBUG_ISR("End inta 0x%08x, enabled 0x%08x, fh 0x%08x, "
4938 "flags 0x%08lx\n", inta, inta_mask, inta_fh, flags);
4939 }
4940 #endif
4941 spin_unlock_irqrestore(&priv->lock, flags);
4942 }
4943
4944 static irqreturn_t iwl3945_isr(int irq, void *data)
4945 {
4946 struct iwl3945_priv *priv = data;
4947 u32 inta, inta_mask;
4948 u32 inta_fh;
4949 if (!priv)
4950 return IRQ_NONE;
4951
4952 spin_lock(&priv->lock);
4953
4954 /* Disable (but don't clear!) interrupts here to avoid
4955 * back-to-back ISRs and sporadic interrupts from our NIC.
4956 * If we have something to service, the tasklet will re-enable ints.
4957 * If we *don't* have something, we'll re-enable before leaving here. */
4958 inta_mask = iwl3945_read32(priv, CSR_INT_MASK); /* just for debug */
4959 iwl3945_write32(priv, CSR_INT_MASK, 0x00000000);
4960
4961 /* Discover which interrupts are active/pending */
4962 inta = iwl3945_read32(priv, CSR_INT);
4963 inta_fh = iwl3945_read32(priv, CSR_FH_INT_STATUS);
4964
4965 /* Ignore interrupt if there's nothing in NIC to service.
4966 * This may be due to IRQ shared with another device,
4967 * or due to sporadic interrupts thrown from our NIC. */
4968 if (!inta && !inta_fh) {
4969 IWL_DEBUG_ISR("Ignore interrupt, inta == 0, inta_fh == 0\n");
4970 goto none;
4971 }
4972
4973 if ((inta == 0xFFFFFFFF) || ((inta & 0xFFFFFFF0) == 0xa5a5a5a0)) {
4974 /* Hardware disappeared */
4975 IWL_WARNING("HARDWARE GONE?? INTA == 0x%080x\n", inta);
4976 goto unplugged;
4977 }
4978
4979 IWL_DEBUG_ISR("ISR inta 0x%08x, enabled 0x%08x, fh 0x%08x\n",
4980 inta, inta_mask, inta_fh);
4981
4982 /* iwl3945_irq_tasklet() will service interrupts and re-enable them */
4983 tasklet_schedule(&priv->irq_tasklet);
4984 unplugged:
4985 spin_unlock(&priv->lock);
4986
4987 return IRQ_HANDLED;
4988
4989 none:
4990 /* re-enable interrupts here since we don't have anything to service. */
4991 iwl3945_enable_interrupts(priv);
4992 spin_unlock(&priv->lock);
4993 return IRQ_NONE;
4994 }
4995
4996 /************************** EEPROM BANDS ****************************
4997 *
4998 * The iwl3945_eeprom_band definitions below provide the mapping from the
4999 * EEPROM contents to the specific channel number supported for each
5000 * band.
5001 *
5002 * For example, iwl3945_priv->eeprom.band_3_channels[4] from the band_3
5003 * definition below maps to physical channel 42 in the 5.2GHz spectrum.
5004 * The specific geography and calibration information for that channel
5005 * is contained in the eeprom map itself.
5006 *
5007 * During init, we copy the eeprom information and channel map
5008 * information into priv->channel_info_24/52 and priv->channel_map_24/52
5009 *
5010 * channel_map_24/52 provides the index in the channel_info array for a
5011 * given channel. We have to have two separate maps as there is channel
5012 * overlap with the 2.4GHz and 5.2GHz spectrum as seen in band_1 and
5013 * band_2
5014 *
5015 * A value of 0xff stored in the channel_map indicates that the channel
5016 * is not supported by the hardware at all.
5017 *
5018 * A value of 0xfe in the channel_map indicates that the channel is not
5019 * valid for Tx with the current hardware. This means that
5020 * while the system can tune and receive on a given channel, it may not
5021 * be able to associate or transmit any frames on that
5022 * channel. There is no corresponding channel information for that
5023 * entry.
5024 *
5025 *********************************************************************/
5026
5027 /* 2.4 GHz */
5028 static const u8 iwl3945_eeprom_band_1[14] = {
5029 1, 2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13, 14
5030 };
5031
5032 /* 5.2 GHz bands */
5033 static const u8 iwl3945_eeprom_band_2[] = { /* 4915-5080MHz */
5034 183, 184, 185, 187, 188, 189, 192, 196, 7, 8, 11, 12, 16
5035 };
5036
5037 static const u8 iwl3945_eeprom_band_3[] = { /* 5170-5320MHz */
5038 34, 36, 38, 40, 42, 44, 46, 48, 52, 56, 60, 64
5039 };
5040
5041 static const u8 iwl3945_eeprom_band_4[] = { /* 5500-5700MHz */
5042 100, 104, 108, 112, 116, 120, 124, 128, 132, 136, 140
5043 };
5044
5045 static const u8 iwl3945_eeprom_band_5[] = { /* 5725-5825MHz */
5046 145, 149, 153, 157, 161, 165
5047 };
5048
5049 static void iwl3945_init_band_reference(const struct iwl3945_priv *priv, int band,
5050 int *eeprom_ch_count,
5051 const struct iwl3945_eeprom_channel
5052 **eeprom_ch_info,
5053 const u8 **eeprom_ch_index)
5054 {
5055 switch (band) {
5056 case 1: /* 2.4GHz band */
5057 *eeprom_ch_count = ARRAY_SIZE(iwl3945_eeprom_band_1);
5058 *eeprom_ch_info = priv->eeprom.band_1_channels;
5059 *eeprom_ch_index = iwl3945_eeprom_band_1;
5060 break;
5061 case 2: /* 4.9GHz band */
5062 *eeprom_ch_count = ARRAY_SIZE(iwl3945_eeprom_band_2);
5063 *eeprom_ch_info = priv->eeprom.band_2_channels;
5064 *eeprom_ch_index = iwl3945_eeprom_band_2;
5065 break;
5066 case 3: /* 5.2GHz band */
5067 *eeprom_ch_count = ARRAY_SIZE(iwl3945_eeprom_band_3);
5068 *eeprom_ch_info = priv->eeprom.band_3_channels;
5069 *eeprom_ch_index = iwl3945_eeprom_band_3;
5070 break;
5071 case 4: /* 5.5GHz band */
5072 *eeprom_ch_count = ARRAY_SIZE(iwl3945_eeprom_band_4);
5073 *eeprom_ch_info = priv->eeprom.band_4_channels;
5074 *eeprom_ch_index = iwl3945_eeprom_band_4;
5075 break;
5076 case 5: /* 5.7GHz band */
5077 *eeprom_ch_count = ARRAY_SIZE(iwl3945_eeprom_band_5);
5078 *eeprom_ch_info = priv->eeprom.band_5_channels;
5079 *eeprom_ch_index = iwl3945_eeprom_band_5;
5080 break;
5081 default:
5082 BUG();
5083 return;
5084 }
5085 }
5086
5087 /**
5088 * iwl3945_get_channel_info - Find driver's private channel info
5089 *
5090 * Based on band and channel number.
5091 */
5092 const struct iwl3945_channel_info *iwl3945_get_channel_info(const struct iwl3945_priv *priv,
5093 int phymode, u16 channel)
5094 {
5095 int i;
5096
5097 switch (phymode) {
5098 case MODE_IEEE80211A:
5099 for (i = 14; i < priv->channel_count; i++) {
5100 if (priv->channel_info[i].channel == channel)
5101 return &priv->channel_info[i];
5102 }
5103 break;
5104
5105 case MODE_IEEE80211B:
5106 case MODE_IEEE80211G:
5107 if (channel >= 1 && channel <= 14)
5108 return &priv->channel_info[channel - 1];
5109 break;
5110
5111 }
5112
5113 return NULL;
5114 }
5115
5116 #define CHECK_AND_PRINT(x) ((eeprom_ch_info[ch].flags & EEPROM_CHANNEL_##x) \
5117 ? # x " " : "")
5118
5119 /**
5120 * iwl3945_init_channel_map - Set up driver's info for all possible channels
5121 */
5122 static int iwl3945_init_channel_map(struct iwl3945_priv *priv)
5123 {
5124 int eeprom_ch_count = 0;
5125 const u8 *eeprom_ch_index = NULL;
5126 const struct iwl3945_eeprom_channel *eeprom_ch_info = NULL;
5127 int band, ch;
5128 struct iwl3945_channel_info *ch_info;
5129
5130 if (priv->channel_count) {
5131 IWL_DEBUG_INFO("Channel map already initialized.\n");
5132 return 0;
5133 }
5134
5135 if (priv->eeprom.version < 0x2f) {
5136 IWL_WARNING("Unsupported EEPROM version: 0x%04X\n",
5137 priv->eeprom.version);
5138 return -EINVAL;
5139 }
5140
5141 IWL_DEBUG_INFO("Initializing regulatory info from EEPROM\n");
5142
5143 priv->channel_count =
5144 ARRAY_SIZE(iwl3945_eeprom_band_1) +
5145 ARRAY_SIZE(iwl3945_eeprom_band_2) +
5146 ARRAY_SIZE(iwl3945_eeprom_band_3) +
5147 ARRAY_SIZE(iwl3945_eeprom_band_4) +
5148 ARRAY_SIZE(iwl3945_eeprom_band_5);
5149
5150 IWL_DEBUG_INFO("Parsing data for %d channels.\n", priv->channel_count);
5151
5152 priv->channel_info = kzalloc(sizeof(struct iwl3945_channel_info) *
5153 priv->channel_count, GFP_KERNEL);
5154 if (!priv->channel_info) {
5155 IWL_ERROR("Could not allocate channel_info\n");
5156 priv->channel_count = 0;
5157 return -ENOMEM;
5158 }
5159
5160 ch_info = priv->channel_info;
5161
5162 /* Loop through the 5 EEPROM bands adding them in order to the
5163 * channel map we maintain (that contains additional information than
5164 * what just in the EEPROM) */
5165 for (band = 1; band <= 5; band++) {
5166
5167 iwl3945_init_band_reference(priv, band, &eeprom_ch_count,
5168 &eeprom_ch_info, &eeprom_ch_index);
5169
5170 /* Loop through each band adding each of the channels */
5171 for (ch = 0; ch < eeprom_ch_count; ch++) {
5172 ch_info->channel = eeprom_ch_index[ch];
5173 ch_info->phymode = (band == 1) ? MODE_IEEE80211B :
5174 MODE_IEEE80211A;
5175
5176 /* permanently store EEPROM's channel regulatory flags
5177 * and max power in channel info database. */
5178 ch_info->eeprom = eeprom_ch_info[ch];
5179
5180 /* Copy the run-time flags so they are there even on
5181 * invalid channels */
5182 ch_info->flags = eeprom_ch_info[ch].flags;
5183
5184 if (!(is_channel_valid(ch_info))) {
5185 IWL_DEBUG_INFO("Ch. %d Flags %x [%sGHz] - "
5186 "No traffic\n",
5187 ch_info->channel,
5188 ch_info->flags,
5189 is_channel_a_band(ch_info) ?
5190 "5.2" : "2.4");
5191 ch_info++;
5192 continue;
5193 }
5194
5195 /* Initialize regulatory-based run-time data */
5196 ch_info->max_power_avg = ch_info->curr_txpow =
5197 eeprom_ch_info[ch].max_power_avg;
5198 ch_info->scan_power = eeprom_ch_info[ch].max_power_avg;
5199 ch_info->min_power = 0;
5200
5201 IWL_DEBUG_INFO("Ch. %d [%sGHz] %s%s%s%s%s%s(0x%02x"
5202 " %ddBm): Ad-Hoc %ssupported\n",
5203 ch_info->channel,
5204 is_channel_a_band(ch_info) ?
5205 "5.2" : "2.4",
5206 CHECK_AND_PRINT(IBSS),
5207 CHECK_AND_PRINT(ACTIVE),
5208 CHECK_AND_PRINT(RADAR),
5209 CHECK_AND_PRINT(WIDE),
5210 CHECK_AND_PRINT(NARROW),
5211 CHECK_AND_PRINT(DFS),
5212 eeprom_ch_info[ch].flags,
5213 eeprom_ch_info[ch].max_power_avg,
5214 ((eeprom_ch_info[ch].
5215 flags & EEPROM_CHANNEL_IBSS)
5216 && !(eeprom_ch_info[ch].
5217 flags & EEPROM_CHANNEL_RADAR))
5218 ? "" : "not ");
5219
5220 /* Set the user_txpower_limit to the highest power
5221 * supported by any channel */
5222 if (eeprom_ch_info[ch].max_power_avg >
5223 priv->user_txpower_limit)
5224 priv->user_txpower_limit =
5225 eeprom_ch_info[ch].max_power_avg;
5226
5227 ch_info++;
5228 }
5229 }
5230
5231 /* Set up txpower settings in driver for all channels */
5232 if (iwl3945_txpower_set_from_eeprom(priv))
5233 return -EIO;
5234
5235 return 0;
5236 }
5237
5238 /* For active scan, listen ACTIVE_DWELL_TIME (msec) on each channel after
5239 * sending probe req. This should be set long enough to hear probe responses
5240 * from more than one AP. */
5241 #define IWL_ACTIVE_DWELL_TIME_24 (20) /* all times in msec */
5242 #define IWL_ACTIVE_DWELL_TIME_52 (10)
5243
5244 /* For faster active scanning, scan will move to the next channel if fewer than
5245 * PLCP_QUIET_THRESH packets are heard on this channel within
5246 * ACTIVE_QUIET_TIME after sending probe request. This shortens the dwell
5247 * time if it's a quiet channel (nothing responded to our probe, and there's
5248 * no other traffic).
5249 * Disable "quiet" feature by setting PLCP_QUIET_THRESH to 0. */
5250 #define IWL_PLCP_QUIET_THRESH __constant_cpu_to_le16(1) /* packets */
5251 #define IWL_ACTIVE_QUIET_TIME __constant_cpu_to_le16(5) /* msec */
5252
5253 /* For passive scan, listen PASSIVE_DWELL_TIME (msec) on each channel.
5254 * Must be set longer than active dwell time.
5255 * For the most reliable scan, set > AP beacon interval (typically 100msec). */
5256 #define IWL_PASSIVE_DWELL_TIME_24 (20) /* all times in msec */
5257 #define IWL_PASSIVE_DWELL_TIME_52 (10)
5258 #define IWL_PASSIVE_DWELL_BASE (100)
5259 #define IWL_CHANNEL_TUNE_TIME 5
5260
5261 static inline u16 iwl3945_get_active_dwell_time(struct iwl3945_priv *priv, int phymode)
5262 {
5263 if (phymode == MODE_IEEE80211A)
5264 return IWL_ACTIVE_DWELL_TIME_52;
5265 else
5266 return IWL_ACTIVE_DWELL_TIME_24;
5267 }
5268
5269 static u16 iwl3945_get_passive_dwell_time(struct iwl3945_priv *priv, int phymode)
5270 {
5271 u16 active = iwl3945_get_active_dwell_time(priv, phymode);
5272 u16 passive = (phymode != MODE_IEEE80211A) ?
5273 IWL_PASSIVE_DWELL_BASE + IWL_PASSIVE_DWELL_TIME_24 :
5274 IWL_PASSIVE_DWELL_BASE + IWL_PASSIVE_DWELL_TIME_52;
5275
5276 if (iwl3945_is_associated(priv)) {
5277 /* If we're associated, we clamp the maximum passive
5278 * dwell time to be 98% of the beacon interval (minus
5279 * 2 * channel tune time) */
5280 passive = priv->beacon_int;
5281 if ((passive > IWL_PASSIVE_DWELL_BASE) || !passive)
5282 passive = IWL_PASSIVE_DWELL_BASE;
5283 passive = (passive * 98) / 100 - IWL_CHANNEL_TUNE_TIME * 2;
5284 }
5285
5286 if (passive <= active)
5287 passive = active + 1;
5288
5289 return passive;
5290 }
5291
5292 static int iwl3945_get_channels_for_scan(struct iwl3945_priv *priv, int phymode,
5293 u8 is_active, u8 direct_mask,
5294 struct iwl3945_scan_channel *scan_ch)
5295 {
5296 const struct ieee80211_channel *channels = NULL;
5297 const struct ieee80211_hw_mode *hw_mode;
5298 const struct iwl3945_channel_info *ch_info;
5299 u16 passive_dwell = 0;
5300 u16 active_dwell = 0;
5301 int added, i;
5302
5303 hw_mode = iwl3945_get_hw_mode(priv, phymode);
5304 if (!hw_mode)
5305 return 0;
5306
5307 channels = hw_mode->channels;
5308
5309 active_dwell = iwl3945_get_active_dwell_time(priv, phymode);
5310 passive_dwell = iwl3945_get_passive_dwell_time(priv, phymode);
5311
5312 for (i = 0, added = 0; i < hw_mode->num_channels; i++) {
5313 if (channels[i].chan ==
5314 le16_to_cpu(priv->active_rxon.channel)) {
5315 if (iwl3945_is_associated(priv)) {
5316 IWL_DEBUG_SCAN
5317 ("Skipping current channel %d\n",
5318 le16_to_cpu(priv->active_rxon.channel));
5319 continue;
5320 }
5321 } else if (priv->only_active_channel)
5322 continue;
5323
5324 scan_ch->channel = channels[i].chan;
5325
5326 ch_info = iwl3945_get_channel_info(priv, phymode, scan_ch->channel);
5327 if (!is_channel_valid(ch_info)) {
5328 IWL_DEBUG_SCAN("Channel %d is INVALID for this SKU.\n",
5329 scan_ch->channel);
5330 continue;
5331 }
5332
5333 if (!is_active || is_channel_passive(ch_info) ||
5334 !(channels[i].flag & IEEE80211_CHAN_W_ACTIVE_SCAN))
5335 scan_ch->type = 0; /* passive */
5336 else
5337 scan_ch->type = 1; /* active */
5338
5339 if (scan_ch->type & 1)
5340 scan_ch->type |= (direct_mask << 1);
5341
5342 if (is_channel_narrow(ch_info))
5343 scan_ch->type |= (1 << 7);
5344
5345 scan_ch->active_dwell = cpu_to_le16(active_dwell);
5346 scan_ch->passive_dwell = cpu_to_le16(passive_dwell);
5347
5348 /* Set txpower levels to defaults */
5349 scan_ch->tpc.dsp_atten = 110;
5350 /* scan_pwr_info->tpc.dsp_atten; */
5351
5352 /*scan_pwr_info->tpc.tx_gain; */
5353 if (phymode == MODE_IEEE80211A)
5354 scan_ch->tpc.tx_gain = ((1 << 5) | (3 << 3)) | 3;
5355 else {
5356 scan_ch->tpc.tx_gain = ((1 << 5) | (5 << 3));
5357 /* NOTE: if we were doing 6Mb OFDM for scans we'd use
5358 * power level:
5359 * scan_ch->tpc.tx_gain = ((1<<5) | (2 << 3)) | 3;
5360 */
5361 }
5362
5363 IWL_DEBUG_SCAN("Scanning %d [%s %d]\n",
5364 scan_ch->channel,
5365 (scan_ch->type & 1) ? "ACTIVE" : "PASSIVE",
5366 (scan_ch->type & 1) ?
5367 active_dwell : passive_dwell);
5368
5369 scan_ch++;
5370 added++;
5371 }
5372
5373 IWL_DEBUG_SCAN("total channels to scan %d \n", added);
5374 return added;
5375 }
5376
5377 static void iwl3945_reset_channel_flag(struct iwl3945_priv *priv)
5378 {
5379 int i, j;
5380 for (i = 0; i < 3; i++) {
5381 struct ieee80211_hw_mode *hw_mode = (void *)&priv->modes[i];
5382 for (j = 0; j < hw_mode->num_channels; j++)
5383 hw_mode->channels[j].flag = hw_mode->channels[j].val;
5384 }
5385 }
5386
5387 static void iwl3945_init_hw_rates(struct iwl3945_priv *priv,
5388 struct ieee80211_rate *rates)
5389 {
5390 int i;
5391
5392 for (i = 0; i < IWL_RATE_COUNT; i++) {
5393 rates[i].rate = iwl3945_rates[i].ieee * 5;
5394 rates[i].val = i; /* Rate scaling will work on indexes */
5395 rates[i].val2 = i;
5396 rates[i].flags = IEEE80211_RATE_SUPPORTED;
5397 /* Only OFDM have the bits-per-symbol set */
5398 if ((i <= IWL_LAST_OFDM_RATE) && (i >= IWL_FIRST_OFDM_RATE))
5399 rates[i].flags |= IEEE80211_RATE_OFDM;
5400 else {
5401 /*
5402 * If CCK 1M then set rate flag to CCK else CCK_2
5403 * which is CCK | PREAMBLE2
5404 */
5405 rates[i].flags |= (iwl3945_rates[i].plcp == 10) ?
5406 IEEE80211_RATE_CCK : IEEE80211_RATE_CCK_2;
5407 }
5408
5409 /* Set up which ones are basic rates... */
5410 if (IWL_BASIC_RATES_MASK & (1 << i))
5411 rates[i].flags |= IEEE80211_RATE_BASIC;
5412 }
5413 }
5414
5415 /**
5416 * iwl3945_init_geos - Initialize mac80211's geo/channel info based from eeprom
5417 */
5418 static int iwl3945_init_geos(struct iwl3945_priv *priv)
5419 {
5420 struct iwl3945_channel_info *ch;
5421 struct ieee80211_hw_mode *modes;
5422 struct ieee80211_channel *channels;
5423 struct ieee80211_channel *geo_ch;
5424 struct ieee80211_rate *rates;
5425 int i = 0;
5426 enum {
5427 A = 0,
5428 B = 1,
5429 G = 2,
5430 };
5431 int mode_count = 3;
5432
5433 if (priv->modes) {
5434 IWL_DEBUG_INFO("Geography modes already initialized.\n");
5435 set_bit(STATUS_GEO_CONFIGURED, &priv->status);
5436 return 0;
5437 }
5438
5439 modes = kzalloc(sizeof(struct ieee80211_hw_mode) * mode_count,
5440 GFP_KERNEL);
5441 if (!modes)
5442 return -ENOMEM;
5443
5444 channels = kzalloc(sizeof(struct ieee80211_channel) *
5445 priv->channel_count, GFP_KERNEL);
5446 if (!channels) {
5447 kfree(modes);
5448 return -ENOMEM;
5449 }
5450
5451 rates = kzalloc((sizeof(struct ieee80211_rate) * (IWL_MAX_RATES + 1)),
5452 GFP_KERNEL);
5453 if (!rates) {
5454 kfree(modes);
5455 kfree(channels);
5456 return -ENOMEM;
5457 }
5458
5459 /* 0 = 802.11a
5460 * 1 = 802.11b
5461 * 2 = 802.11g
5462 */
5463
5464 /* 5.2GHz channels start after the 2.4GHz channels */
5465 modes[A].mode = MODE_IEEE80211A;
5466 modes[A].channels = &channels[ARRAY_SIZE(iwl3945_eeprom_band_1)];
5467 modes[A].rates = &rates[4];
5468 modes[A].num_rates = 8; /* just OFDM */
5469 modes[A].num_channels = 0;
5470
5471 modes[B].mode = MODE_IEEE80211B;
5472 modes[B].channels = channels;
5473 modes[B].rates = rates;
5474 modes[B].num_rates = 4; /* just CCK */
5475 modes[B].num_channels = 0;
5476
5477 modes[G].mode = MODE_IEEE80211G;
5478 modes[G].channels = channels;
5479 modes[G].rates = rates;
5480 modes[G].num_rates = 12; /* OFDM & CCK */
5481 modes[G].num_channels = 0;
5482
5483 priv->ieee_channels = channels;
5484 priv->ieee_rates = rates;
5485
5486 iwl3945_init_hw_rates(priv, rates);
5487
5488 for (i = 0, geo_ch = channels; i < priv->channel_count; i++) {
5489 ch = &priv->channel_info[i];
5490
5491 if (!is_channel_valid(ch)) {
5492 IWL_DEBUG_INFO("Channel %d [%sGHz] is restricted -- "
5493 "skipping.\n",
5494 ch->channel, is_channel_a_band(ch) ?
5495 "5.2" : "2.4");
5496 continue;
5497 }
5498
5499 if (is_channel_a_band(ch))
5500 geo_ch = &modes[A].channels[modes[A].num_channels++];
5501 else {
5502 geo_ch = &modes[B].channels[modes[B].num_channels++];
5503 modes[G].num_channels++;
5504 }
5505
5506 geo_ch->freq = ieee80211chan2mhz(ch->channel);
5507 geo_ch->chan = ch->channel;
5508 geo_ch->power_level = ch->max_power_avg;
5509 geo_ch->antenna_max = 0xff;
5510
5511 if (is_channel_valid(ch)) {
5512 geo_ch->flag = IEEE80211_CHAN_W_SCAN;
5513 if (ch->flags & EEPROM_CHANNEL_IBSS)
5514 geo_ch->flag |= IEEE80211_CHAN_W_IBSS;
5515
5516 if (ch->flags & EEPROM_CHANNEL_ACTIVE)
5517 geo_ch->flag |= IEEE80211_CHAN_W_ACTIVE_SCAN;
5518
5519 if (ch->flags & EEPROM_CHANNEL_RADAR)
5520 geo_ch->flag |= IEEE80211_CHAN_W_RADAR_DETECT;
5521
5522 if (ch->max_power_avg > priv->max_channel_txpower_limit)
5523 priv->max_channel_txpower_limit =
5524 ch->max_power_avg;
5525 }
5526
5527 geo_ch->val = geo_ch->flag;
5528 }
5529
5530 if ((modes[A].num_channels == 0) && priv->is_abg) {
5531 printk(KERN_INFO DRV_NAME
5532 ": Incorrectly detected BG card as ABG. Please send "
5533 "your PCI ID 0x%04X:0x%04X to maintainer.\n",
5534 priv->pci_dev->device, priv->pci_dev->subsystem_device);
5535 priv->is_abg = 0;
5536 }
5537
5538 printk(KERN_INFO DRV_NAME
5539 ": Tunable channels: %d 802.11bg, %d 802.11a channels\n",
5540 modes[G].num_channels, modes[A].num_channels);
5541
5542 /*
5543 * NOTE: We register these in preference of order -- the
5544 * stack doesn't currently (as of 7.0.6 / Apr 24 '07) pick
5545 * a phymode based on rates or AP capabilities but seems to
5546 * configure it purely on if the channel being configured
5547 * is supported by a mode -- and the first match is taken
5548 */
5549
5550 if (modes[G].num_channels)
5551 ieee80211_register_hwmode(priv->hw, &modes[G]);
5552 if (modes[B].num_channels)
5553 ieee80211_register_hwmode(priv->hw, &modes[B]);
5554 if (modes[A].num_channels)
5555 ieee80211_register_hwmode(priv->hw, &modes[A]);
5556
5557 priv->modes = modes;
5558 set_bit(STATUS_GEO_CONFIGURED, &priv->status);
5559
5560 return 0;
5561 }
5562
5563 /******************************************************************************
5564 *
5565 * uCode download functions
5566 *
5567 ******************************************************************************/
5568
5569 static void iwl3945_dealloc_ucode_pci(struct iwl3945_priv *priv)
5570 {
5571 if (priv->ucode_code.v_addr != NULL) {
5572 pci_free_consistent(priv->pci_dev,
5573 priv->ucode_code.len,
5574 priv->ucode_code.v_addr,
5575 priv->ucode_code.p_addr);
5576 priv->ucode_code.v_addr = NULL;
5577 }
5578 if (priv->ucode_data.v_addr != NULL) {
5579 pci_free_consistent(priv->pci_dev,
5580 priv->ucode_data.len,
5581 priv->ucode_data.v_addr,
5582 priv->ucode_data.p_addr);
5583 priv->ucode_data.v_addr = NULL;
5584 }
5585 if (priv->ucode_data_backup.v_addr != NULL) {
5586 pci_free_consistent(priv->pci_dev,
5587 priv->ucode_data_backup.len,
5588 priv->ucode_data_backup.v_addr,
5589 priv->ucode_data_backup.p_addr);
5590 priv->ucode_data_backup.v_addr = NULL;
5591 }
5592 if (priv->ucode_init.v_addr != NULL) {
5593 pci_free_consistent(priv->pci_dev,
5594 priv->ucode_init.len,
5595 priv->ucode_init.v_addr,
5596 priv->ucode_init.p_addr);
5597 priv->ucode_init.v_addr = NULL;
5598 }
5599 if (priv->ucode_init_data.v_addr != NULL) {
5600 pci_free_consistent(priv->pci_dev,
5601 priv->ucode_init_data.len,
5602 priv->ucode_init_data.v_addr,
5603 priv->ucode_init_data.p_addr);
5604 priv->ucode_init_data.v_addr = NULL;
5605 }
5606 if (priv->ucode_boot.v_addr != NULL) {
5607 pci_free_consistent(priv->pci_dev,
5608 priv->ucode_boot.len,
5609 priv->ucode_boot.v_addr,
5610 priv->ucode_boot.p_addr);
5611 priv->ucode_boot.v_addr = NULL;
5612 }
5613 }
5614
5615 /**
5616 * iwl3945_verify_inst_full - verify runtime uCode image in card vs. host,
5617 * looking at all data.
5618 */
5619 static int iwl3945_verify_inst_full(struct iwl3945_priv *priv, __le32 * image, u32 len)
5620 {
5621 u32 val;
5622 u32 save_len = len;
5623 int rc = 0;
5624 u32 errcnt;
5625
5626 IWL_DEBUG_INFO("ucode inst image size is %u\n", len);
5627
5628 rc = iwl3945_grab_nic_access(priv);
5629 if (rc)
5630 return rc;
5631
5632 iwl3945_write_direct32(priv, HBUS_TARG_MEM_RADDR, RTC_INST_LOWER_BOUND);
5633
5634 errcnt = 0;
5635 for (; len > 0; len -= sizeof(u32), image++) {
5636 /* read data comes through single port, auto-incr addr */
5637 /* NOTE: Use the debugless read so we don't flood kernel log
5638 * if IWL_DL_IO is set */
5639 val = _iwl3945_read_direct32(priv, HBUS_TARG_MEM_RDAT);
5640 if (val != le32_to_cpu(*image)) {
5641 IWL_ERROR("uCode INST section is invalid at "
5642 "offset 0x%x, is 0x%x, s/b 0x%x\n",
5643 save_len - len, val, le32_to_cpu(*image));
5644 rc = -EIO;
5645 errcnt++;
5646 if (errcnt >= 20)
5647 break;
5648 }
5649 }
5650
5651 iwl3945_release_nic_access(priv);
5652
5653 if (!errcnt)
5654 IWL_DEBUG_INFO("ucode image in INSTRUCTION memory is good\n");
5655
5656 return rc;
5657 }
5658
5659
5660 /**
5661 * iwl3945_verify_inst_sparse - verify runtime uCode image in card vs. host,
5662 * using sample data 100 bytes apart. If these sample points are good,
5663 * it's a pretty good bet that everything between them is good, too.
5664 */
5665 static int iwl3945_verify_inst_sparse(struct iwl3945_priv *priv, __le32 *image, u32 len)
5666 {
5667 u32 val;
5668 int rc = 0;
5669 u32 errcnt = 0;
5670 u32 i;
5671
5672 IWL_DEBUG_INFO("ucode inst image size is %u\n", len);
5673
5674 rc = iwl3945_grab_nic_access(priv);
5675 if (rc)
5676 return rc;
5677
5678 for (i = 0; i < len; i += 100, image += 100/sizeof(u32)) {
5679 /* read data comes through single port, auto-incr addr */
5680 /* NOTE: Use the debugless read so we don't flood kernel log
5681 * if IWL_DL_IO is set */
5682 iwl3945_write_direct32(priv, HBUS_TARG_MEM_RADDR,
5683 i + RTC_INST_LOWER_BOUND);
5684 val = _iwl3945_read_direct32(priv, HBUS_TARG_MEM_RDAT);
5685 if (val != le32_to_cpu(*image)) {
5686 #if 0 /* Enable this if you want to see details */
5687 IWL_ERROR("uCode INST section is invalid at "
5688 "offset 0x%x, is 0x%x, s/b 0x%x\n",
5689 i, val, *image);
5690 #endif
5691 rc = -EIO;
5692 errcnt++;
5693 if (errcnt >= 3)
5694 break;
5695 }
5696 }
5697
5698 iwl3945_release_nic_access(priv);
5699
5700 return rc;
5701 }
5702
5703
5704 /**
5705 * iwl3945_verify_ucode - determine which instruction image is in SRAM,
5706 * and verify its contents
5707 */
5708 static int iwl3945_verify_ucode(struct iwl3945_priv *priv)
5709 {
5710 __le32 *image;
5711 u32 len;
5712 int rc = 0;
5713
5714 /* Try bootstrap */
5715 image = (__le32 *)priv->ucode_boot.v_addr;
5716 len = priv->ucode_boot.len;
5717 rc = iwl3945_verify_inst_sparse(priv, image, len);
5718 if (rc == 0) {
5719 IWL_DEBUG_INFO("Bootstrap uCode is good in inst SRAM\n");
5720 return 0;
5721 }
5722
5723 /* Try initialize */
5724 image = (__le32 *)priv->ucode_init.v_addr;
5725 len = priv->ucode_init.len;
5726 rc = iwl3945_verify_inst_sparse(priv, image, len);
5727 if (rc == 0) {
5728 IWL_DEBUG_INFO("Initialize uCode is good in inst SRAM\n");
5729 return 0;
5730 }
5731
5732 /* Try runtime/protocol */
5733 image = (__le32 *)priv->ucode_code.v_addr;
5734 len = priv->ucode_code.len;
5735 rc = iwl3945_verify_inst_sparse(priv, image, len);
5736 if (rc == 0) {
5737 IWL_DEBUG_INFO("Runtime uCode is good in inst SRAM\n");
5738 return 0;
5739 }
5740
5741 IWL_ERROR("NO VALID UCODE IMAGE IN INSTRUCTION SRAM!!\n");
5742
5743 /* Since nothing seems to match, show first several data entries in
5744 * instruction SRAM, so maybe visual inspection will give a clue.
5745 * Selection of bootstrap image (vs. other images) is arbitrary. */
5746 image = (__le32 *)priv->ucode_boot.v_addr;
5747 len = priv->ucode_boot.len;
5748 rc = iwl3945_verify_inst_full(priv, image, len);
5749
5750 return rc;
5751 }
5752
5753
5754 /* check contents of special bootstrap uCode SRAM */
5755 static int iwl3945_verify_bsm(struct iwl3945_priv *priv)
5756 {
5757 __le32 *image = priv->ucode_boot.v_addr;
5758 u32 len = priv->ucode_boot.len;
5759 u32 reg;
5760 u32 val;
5761
5762 IWL_DEBUG_INFO("Begin verify bsm\n");
5763
5764 /* verify BSM SRAM contents */
5765 val = iwl3945_read_prph(priv, BSM_WR_DWCOUNT_REG);
5766 for (reg = BSM_SRAM_LOWER_BOUND;
5767 reg < BSM_SRAM_LOWER_BOUND + len;
5768 reg += sizeof(u32), image ++) {
5769 val = iwl3945_read_prph(priv, reg);
5770 if (val != le32_to_cpu(*image)) {
5771 IWL_ERROR("BSM uCode verification failed at "
5772 "addr 0x%08X+%u (of %u), is 0x%x, s/b 0x%x\n",
5773 BSM_SRAM_LOWER_BOUND,
5774 reg - BSM_SRAM_LOWER_BOUND, len,
5775 val, le32_to_cpu(*image));
5776 return -EIO;
5777 }
5778 }
5779
5780 IWL_DEBUG_INFO("BSM bootstrap uCode image OK\n");
5781
5782 return 0;
5783 }
5784
5785 /**
5786 * iwl3945_load_bsm - Load bootstrap instructions
5787 *
5788 * BSM operation:
5789 *
5790 * The Bootstrap State Machine (BSM) stores a short bootstrap uCode program
5791 * in special SRAM that does not power down during RFKILL. When powering back
5792 * up after power-saving sleeps (or during initial uCode load), the BSM loads
5793 * the bootstrap program into the on-board processor, and starts it.
5794 *
5795 * The bootstrap program loads (via DMA) instructions and data for a new
5796 * program from host DRAM locations indicated by the host driver in the
5797 * BSM_DRAM_* registers. Once the new program is loaded, it starts
5798 * automatically.
5799 *
5800 * When initializing the NIC, the host driver points the BSM to the
5801 * "initialize" uCode image. This uCode sets up some internal data, then
5802 * notifies host via "initialize alive" that it is complete.
5803 *
5804 * The host then replaces the BSM_DRAM_* pointer values to point to the
5805 * normal runtime uCode instructions and a backup uCode data cache buffer
5806 * (filled initially with starting data values for the on-board processor),
5807 * then triggers the "initialize" uCode to load and launch the runtime uCode,
5808 * which begins normal operation.
5809 *
5810 * When doing a power-save shutdown, runtime uCode saves data SRAM into
5811 * the backup data cache in DRAM before SRAM is powered down.
5812 *
5813 * When powering back up, the BSM loads the bootstrap program. This reloads
5814 * the runtime uCode instructions and the backup data cache into SRAM,
5815 * and re-launches the runtime uCode from where it left off.
5816 */
5817 static int iwl3945_load_bsm(struct iwl3945_priv *priv)
5818 {
5819 __le32 *image = priv->ucode_boot.v_addr;
5820 u32 len = priv->ucode_boot.len;
5821 dma_addr_t pinst;
5822 dma_addr_t pdata;
5823 u32 inst_len;
5824 u32 data_len;
5825 int rc;
5826 int i;
5827 u32 done;
5828 u32 reg_offset;
5829
5830 IWL_DEBUG_INFO("Begin load bsm\n");
5831
5832 /* make sure bootstrap program is no larger than BSM's SRAM size */
5833 if (len > IWL_MAX_BSM_SIZE)
5834 return -EINVAL;
5835
5836 /* Tell bootstrap uCode where to find the "Initialize" uCode
5837 * in host DRAM ... host DRAM physical address bits 31:0 for 3945.
5838 * NOTE: iwl3945_initialize_alive_start() will replace these values,
5839 * after the "initialize" uCode has run, to point to
5840 * runtime/protocol instructions and backup data cache. */
5841 pinst = priv->ucode_init.p_addr;
5842 pdata = priv->ucode_init_data.p_addr;
5843 inst_len = priv->ucode_init.len;
5844 data_len = priv->ucode_init_data.len;
5845
5846 rc = iwl3945_grab_nic_access(priv);
5847 if (rc)
5848 return rc;
5849
5850 iwl3945_write_prph(priv, BSM_DRAM_INST_PTR_REG, pinst);
5851 iwl3945_write_prph(priv, BSM_DRAM_DATA_PTR_REG, pdata);
5852 iwl3945_write_prph(priv, BSM_DRAM_INST_BYTECOUNT_REG, inst_len);
5853 iwl3945_write_prph(priv, BSM_DRAM_DATA_BYTECOUNT_REG, data_len);
5854
5855 /* Fill BSM memory with bootstrap instructions */
5856 for (reg_offset = BSM_SRAM_LOWER_BOUND;
5857 reg_offset < BSM_SRAM_LOWER_BOUND + len;
5858 reg_offset += sizeof(u32), image++)
5859 _iwl3945_write_prph(priv, reg_offset,
5860 le32_to_cpu(*image));
5861
5862 rc = iwl3945_verify_bsm(priv);
5863 if (rc) {
5864 iwl3945_release_nic_access(priv);
5865 return rc;
5866 }
5867
5868 /* Tell BSM to copy from BSM SRAM into instruction SRAM, when asked */
5869 iwl3945_write_prph(priv, BSM_WR_MEM_SRC_REG, 0x0);
5870 iwl3945_write_prph(priv, BSM_WR_MEM_DST_REG,
5871 RTC_INST_LOWER_BOUND);
5872 iwl3945_write_prph(priv, BSM_WR_DWCOUNT_REG, len / sizeof(u32));
5873
5874 /* Load bootstrap code into instruction SRAM now,
5875 * to prepare to load "initialize" uCode */
5876 iwl3945_write_prph(priv, BSM_WR_CTRL_REG,
5877 BSM_WR_CTRL_REG_BIT_START);
5878
5879 /* Wait for load of bootstrap uCode to finish */
5880 for (i = 0; i < 100; i++) {
5881 done = iwl3945_read_prph(priv, BSM_WR_CTRL_REG);
5882 if (!(done & BSM_WR_CTRL_REG_BIT_START))
5883 break;
5884 udelay(10);
5885 }
5886 if (i < 100)
5887 IWL_DEBUG_INFO("BSM write complete, poll %d iterations\n", i);
5888 else {
5889 IWL_ERROR("BSM write did not complete!\n");
5890 return -EIO;
5891 }
5892
5893 /* Enable future boot loads whenever power management unit triggers it
5894 * (e.g. when powering back up after power-save shutdown) */
5895 iwl3945_write_prph(priv, BSM_WR_CTRL_REG,
5896 BSM_WR_CTRL_REG_BIT_START_EN);
5897
5898 iwl3945_release_nic_access(priv);
5899
5900 return 0;
5901 }
5902
5903 static void iwl3945_nic_start(struct iwl3945_priv *priv)
5904 {
5905 /* Remove all resets to allow NIC to operate */
5906 iwl3945_write32(priv, CSR_RESET, 0);
5907 }
5908
5909 static int iwl3945_alloc_fw_desc(struct pci_dev *pci_dev, struct fw_desc *desc)
5910 {
5911 desc->v_addr = pci_alloc_consistent(pci_dev, desc->len, &desc->p_addr);
5912 return (desc->v_addr != NULL) ? 0 : -ENOMEM;
5913 }
5914
5915 /**
5916 * iwl3945_read_ucode - Read uCode images from disk file.
5917 *
5918 * Copy into buffers for card to fetch via bus-mastering
5919 */
5920 static int iwl3945_read_ucode(struct iwl3945_priv *priv)
5921 {
5922 struct iwl3945_ucode *ucode;
5923 int ret = 0;
5924 const struct firmware *ucode_raw;
5925 /* firmware file name contains uCode/driver compatibility version */
5926 const char *name = "iwlwifi-3945" IWL3945_UCODE_API ".ucode";
5927 u8 *src;
5928 size_t len;
5929 u32 ver, inst_size, data_size, init_size, init_data_size, boot_size;
5930
5931 /* Ask kernel firmware_class module to get the boot firmware off disk.
5932 * request_firmware() is synchronous, file is in memory on return. */
5933 ret = request_firmware(&ucode_raw, name, &priv->pci_dev->dev);
5934 if (ret < 0) {
5935 IWL_ERROR("%s firmware file req failed: Reason %d\n",
5936 name, ret);
5937 goto error;
5938 }
5939
5940 IWL_DEBUG_INFO("Got firmware '%s' file (%zd bytes) from disk\n",
5941 name, ucode_raw->size);
5942
5943 /* Make sure that we got at least our header! */
5944 if (ucode_raw->size < sizeof(*ucode)) {
5945 IWL_ERROR("File size way too small!\n");
5946 ret = -EINVAL;
5947 goto err_release;
5948 }
5949
5950 /* Data from ucode file: header followed by uCode images */
5951 ucode = (void *)ucode_raw->data;
5952
5953 ver = le32_to_cpu(ucode->ver);
5954 inst_size = le32_to_cpu(ucode->inst_size);
5955 data_size = le32_to_cpu(ucode->data_size);
5956 init_size = le32_to_cpu(ucode->init_size);
5957 init_data_size = le32_to_cpu(ucode->init_data_size);
5958 boot_size = le32_to_cpu(ucode->boot_size);
5959
5960 IWL_DEBUG_INFO("f/w package hdr ucode version = 0x%x\n", ver);
5961 IWL_DEBUG_INFO("f/w package hdr runtime inst size = %u\n", inst_size);
5962 IWL_DEBUG_INFO("f/w package hdr runtime data size = %u\n", data_size);
5963 IWL_DEBUG_INFO("f/w package hdr init inst size = %u\n", init_size);
5964 IWL_DEBUG_INFO("f/w package hdr init data size = %u\n", init_data_size);
5965 IWL_DEBUG_INFO("f/w package hdr boot inst size = %u\n", boot_size);
5966
5967 /* Verify size of file vs. image size info in file's header */
5968 if (ucode_raw->size < sizeof(*ucode) +
5969 inst_size + data_size + init_size +
5970 init_data_size + boot_size) {
5971
5972 IWL_DEBUG_INFO("uCode file size %d too small\n",
5973 (int)ucode_raw->size);
5974 ret = -EINVAL;
5975 goto err_release;
5976 }
5977
5978 /* Verify that uCode images will fit in card's SRAM */
5979 if (inst_size > IWL_MAX_INST_SIZE) {
5980 IWL_DEBUG_INFO("uCode instr len %d too large to fit in\n",
5981 inst_size);
5982 ret = -EINVAL;
5983 goto err_release;
5984 }
5985
5986 if (data_size > IWL_MAX_DATA_SIZE) {
5987 IWL_DEBUG_INFO("uCode data len %d too large to fit in\n",
5988 data_size);
5989 ret = -EINVAL;
5990 goto err_release;
5991 }
5992 if (init_size > IWL_MAX_INST_SIZE) {
5993 IWL_DEBUG_INFO("uCode init instr len %d too large to fit in\n",
5994 init_size);
5995 ret = -EINVAL;
5996 goto err_release;
5997 }
5998 if (init_data_size > IWL_MAX_DATA_SIZE) {
5999 IWL_DEBUG_INFO("uCode init data len %d too large to fit in\n",
6000 init_data_size);
6001 ret = -EINVAL;
6002 goto err_release;
6003 }
6004 if (boot_size > IWL_MAX_BSM_SIZE) {
6005 IWL_DEBUG_INFO("uCode boot instr len %d too large to fit in\n",
6006 boot_size);
6007 ret = -EINVAL;
6008 goto err_release;
6009 }
6010
6011 /* Allocate ucode buffers for card's bus-master loading ... */
6012
6013 /* Runtime instructions and 2 copies of data:
6014 * 1) unmodified from disk
6015 * 2) backup cache for save/restore during power-downs */
6016 priv->ucode_code.len = inst_size;
6017 iwl3945_alloc_fw_desc(priv->pci_dev, &priv->ucode_code);
6018
6019 priv->ucode_data.len = data_size;
6020 iwl3945_alloc_fw_desc(priv->pci_dev, &priv->ucode_data);
6021
6022 priv->ucode_data_backup.len = data_size;
6023 iwl3945_alloc_fw_desc(priv->pci_dev, &priv->ucode_data_backup);
6024
6025 if (!priv->ucode_code.v_addr || !priv->ucode_data.v_addr ||
6026 !priv->ucode_data_backup.v_addr)
6027 goto err_pci_alloc;
6028
6029 /* Initialization instructions and data */
6030 if (init_size && init_data_size) {
6031 priv->ucode_init.len = init_size;
6032 iwl3945_alloc_fw_desc(priv->pci_dev, &priv->ucode_init);
6033
6034 priv->ucode_init_data.len = init_data_size;
6035 iwl3945_alloc_fw_desc(priv->pci_dev, &priv->ucode_init_data);
6036
6037 if (!priv->ucode_init.v_addr || !priv->ucode_init_data.v_addr)
6038 goto err_pci_alloc;
6039 }
6040
6041 /* Bootstrap (instructions only, no data) */
6042 if (boot_size) {
6043 priv->ucode_boot.len = boot_size;
6044 iwl3945_alloc_fw_desc(priv->pci_dev, &priv->ucode_boot);
6045
6046 if (!priv->ucode_boot.v_addr)
6047 goto err_pci_alloc;
6048 }
6049
6050 /* Copy images into buffers for card's bus-master reads ... */
6051
6052 /* Runtime instructions (first block of data in file) */
6053 src = &ucode->data[0];
6054 len = priv->ucode_code.len;
6055 IWL_DEBUG_INFO("Copying (but not loading) uCode instr len %Zd\n", len);
6056 memcpy(priv->ucode_code.v_addr, src, len);
6057 IWL_DEBUG_INFO("uCode instr buf vaddr = 0x%p, paddr = 0x%08x\n",
6058 priv->ucode_code.v_addr, (u32)priv->ucode_code.p_addr);
6059
6060 /* Runtime data (2nd block)
6061 * NOTE: Copy into backup buffer will be done in iwl3945_up() */
6062 src = &ucode->data[inst_size];
6063 len = priv->ucode_data.len;
6064 IWL_DEBUG_INFO("Copying (but not loading) uCode data len %Zd\n", len);
6065 memcpy(priv->ucode_data.v_addr, src, len);
6066 memcpy(priv->ucode_data_backup.v_addr, src, len);
6067
6068 /* Initialization instructions (3rd block) */
6069 if (init_size) {
6070 src = &ucode->data[inst_size + data_size];
6071 len = priv->ucode_init.len;
6072 IWL_DEBUG_INFO("Copying (but not loading) init instr len %Zd\n",
6073 len);
6074 memcpy(priv->ucode_init.v_addr, src, len);
6075 }
6076
6077 /* Initialization data (4th block) */
6078 if (init_data_size) {
6079 src = &ucode->data[inst_size + data_size + init_size];
6080 len = priv->ucode_init_data.len;
6081 IWL_DEBUG_INFO("Copying (but not loading) init data len %d\n",
6082 (int)len);
6083 memcpy(priv->ucode_init_data.v_addr, src, len);
6084 }
6085
6086 /* Bootstrap instructions (5th block) */
6087 src = &ucode->data[inst_size + data_size + init_size + init_data_size];
6088 len = priv->ucode_boot.len;
6089 IWL_DEBUG_INFO("Copying (but not loading) boot instr len %d\n",
6090 (int)len);
6091 memcpy(priv->ucode_boot.v_addr, src, len);
6092
6093 /* We have our copies now, allow OS release its copies */
6094 release_firmware(ucode_raw);
6095 return 0;
6096
6097 err_pci_alloc:
6098 IWL_ERROR("failed to allocate pci memory\n");
6099 ret = -ENOMEM;
6100 iwl3945_dealloc_ucode_pci(priv);
6101
6102 err_release:
6103 release_firmware(ucode_raw);
6104
6105 error:
6106 return ret;
6107 }
6108
6109
6110 /**
6111 * iwl3945_set_ucode_ptrs - Set uCode address location
6112 *
6113 * Tell initialization uCode where to find runtime uCode.
6114 *
6115 * BSM registers initially contain pointers to initialization uCode.
6116 * We need to replace them to load runtime uCode inst and data,
6117 * and to save runtime data when powering down.
6118 */
6119 static int iwl3945_set_ucode_ptrs(struct iwl3945_priv *priv)
6120 {
6121 dma_addr_t pinst;
6122 dma_addr_t pdata;
6123 int rc = 0;
6124 unsigned long flags;
6125
6126 /* bits 31:0 for 3945 */
6127 pinst = priv->ucode_code.p_addr;
6128 pdata = priv->ucode_data_backup.p_addr;
6129
6130 spin_lock_irqsave(&priv->lock, flags);
6131 rc = iwl3945_grab_nic_access(priv);
6132 if (rc) {
6133 spin_unlock_irqrestore(&priv->lock, flags);
6134 return rc;
6135 }
6136
6137 /* Tell bootstrap uCode where to find image to load */
6138 iwl3945_write_prph(priv, BSM_DRAM_INST_PTR_REG, pinst);
6139 iwl3945_write_prph(priv, BSM_DRAM_DATA_PTR_REG, pdata);
6140 iwl3945_write_prph(priv, BSM_DRAM_DATA_BYTECOUNT_REG,
6141 priv->ucode_data.len);
6142
6143 /* Inst bytecount must be last to set up, bit 31 signals uCode
6144 * that all new ptr/size info is in place */
6145 iwl3945_write_prph(priv, BSM_DRAM_INST_BYTECOUNT_REG,
6146 priv->ucode_code.len | BSM_DRAM_INST_LOAD);
6147
6148 iwl3945_release_nic_access(priv);
6149
6150 spin_unlock_irqrestore(&priv->lock, flags);
6151
6152 IWL_DEBUG_INFO("Runtime uCode pointers are set.\n");
6153
6154 return rc;
6155 }
6156
6157 /**
6158 * iwl3945_init_alive_start - Called after REPLY_ALIVE notification received
6159 *
6160 * Called after REPLY_ALIVE notification received from "initialize" uCode.
6161 *
6162 * Tell "initialize" uCode to go ahead and load the runtime uCode.
6163 */
6164 static void iwl3945_init_alive_start(struct iwl3945_priv *priv)
6165 {
6166 /* Check alive response for "valid" sign from uCode */
6167 if (priv->card_alive_init.is_valid != UCODE_VALID_OK) {
6168 /* We had an error bringing up the hardware, so take it
6169 * all the way back down so we can try again */
6170 IWL_DEBUG_INFO("Initialize Alive failed.\n");
6171 goto restart;
6172 }
6173
6174 /* Bootstrap uCode has loaded initialize uCode ... verify inst image.
6175 * This is a paranoid check, because we would not have gotten the
6176 * "initialize" alive if code weren't properly loaded. */
6177 if (iwl3945_verify_ucode(priv)) {
6178 /* Runtime instruction load was bad;
6179 * take it all the way back down so we can try again */
6180 IWL_DEBUG_INFO("Bad \"initialize\" uCode load.\n");
6181 goto restart;
6182 }
6183
6184 /* Send pointers to protocol/runtime uCode image ... init code will
6185 * load and launch runtime uCode, which will send us another "Alive"
6186 * notification. */
6187 IWL_DEBUG_INFO("Initialization Alive received.\n");
6188 if (iwl3945_set_ucode_ptrs(priv)) {
6189 /* Runtime instruction load won't happen;
6190 * take it all the way back down so we can try again */
6191 IWL_DEBUG_INFO("Couldn't set up uCode pointers.\n");
6192 goto restart;
6193 }
6194 return;
6195
6196 restart:
6197 queue_work(priv->workqueue, &priv->restart);
6198 }
6199
6200
6201 /**
6202 * iwl3945_alive_start - called after REPLY_ALIVE notification received
6203 * from protocol/runtime uCode (initialization uCode's
6204 * Alive gets handled by iwl3945_init_alive_start()).
6205 */
6206 static void iwl3945_alive_start(struct iwl3945_priv *priv)
6207 {
6208 int rc = 0;
6209 int thermal_spin = 0;
6210 u32 rfkill;
6211
6212 IWL_DEBUG_INFO("Runtime Alive received.\n");
6213
6214 if (priv->card_alive.is_valid != UCODE_VALID_OK) {
6215 /* We had an error bringing up the hardware, so take it
6216 * all the way back down so we can try again */
6217 IWL_DEBUG_INFO("Alive failed.\n");
6218 goto restart;
6219 }
6220
6221 /* Initialize uCode has loaded Runtime uCode ... verify inst image.
6222 * This is a paranoid check, because we would not have gotten the
6223 * "runtime" alive if code weren't properly loaded. */
6224 if (iwl3945_verify_ucode(priv)) {
6225 /* Runtime instruction load was bad;
6226 * take it all the way back down so we can try again */
6227 IWL_DEBUG_INFO("Bad runtime uCode load.\n");
6228 goto restart;
6229 }
6230
6231 iwl3945_clear_stations_table(priv);
6232
6233 rc = iwl3945_grab_nic_access(priv);
6234 if (rc) {
6235 IWL_WARNING("Can not read rfkill status from adapter\n");
6236 return;
6237 }
6238
6239 rfkill = iwl3945_read_prph(priv, APMG_RFKILL_REG);
6240 IWL_DEBUG_INFO("RFKILL status: 0x%x\n", rfkill);
6241 iwl3945_release_nic_access(priv);
6242
6243 if (rfkill & 0x1) {
6244 clear_bit(STATUS_RF_KILL_HW, &priv->status);
6245 /* if rfkill is not on, then wait for thermal
6246 * sensor in adapter to kick in */
6247 while (iwl3945_hw_get_temperature(priv) == 0) {
6248 thermal_spin++;
6249 udelay(10);
6250 }
6251
6252 if (thermal_spin)
6253 IWL_DEBUG_INFO("Thermal calibration took %dus\n",
6254 thermal_spin * 10);
6255 } else
6256 set_bit(STATUS_RF_KILL_HW, &priv->status);
6257
6258 /* After the ALIVE response, we can send commands to 3945 uCode */
6259 set_bit(STATUS_ALIVE, &priv->status);
6260
6261 /* Clear out the uCode error bit if it is set */
6262 clear_bit(STATUS_FW_ERROR, &priv->status);
6263
6264 rc = iwl3945_init_channel_map(priv);
6265 if (rc) {
6266 IWL_ERROR("initializing regulatory failed: %d\n", rc);
6267 return;
6268 }
6269
6270 iwl3945_init_geos(priv);
6271
6272 if (iwl3945_is_rfkill(priv))
6273 return;
6274
6275 if (!priv->mac80211_registered) {
6276 /* Unlock so any user space entry points can call back into
6277 * the driver without a deadlock... */
6278 mutex_unlock(&priv->mutex);
6279 iwl3945_rate_control_register(priv->hw);
6280 rc = ieee80211_register_hw(priv->hw);
6281 priv->hw->conf.beacon_int = 100;
6282 mutex_lock(&priv->mutex);
6283
6284 if (rc) {
6285 iwl3945_rate_control_unregister(priv->hw);
6286 IWL_ERROR("Failed to register network "
6287 "device (error %d)\n", rc);
6288 return;
6289 }
6290
6291 priv->mac80211_registered = 1;
6292
6293 iwl3945_reset_channel_flag(priv);
6294 } else
6295 ieee80211_start_queues(priv->hw);
6296
6297 priv->active_rate = priv->rates_mask;
6298 priv->active_rate_basic = priv->rates_mask & IWL_BASIC_RATES_MASK;
6299
6300 iwl3945_send_power_mode(priv, IWL_POWER_LEVEL(priv->power_mode));
6301
6302 if (iwl3945_is_associated(priv)) {
6303 struct iwl3945_rxon_cmd *active_rxon =
6304 (struct iwl3945_rxon_cmd *)(&priv->active_rxon);
6305
6306 memcpy(&priv->staging_rxon, &priv->active_rxon,
6307 sizeof(priv->staging_rxon));
6308 active_rxon->filter_flags &= ~RXON_FILTER_ASSOC_MSK;
6309 } else {
6310 /* Initialize our rx_config data */
6311 iwl3945_connection_init_rx_config(priv);
6312 memcpy(priv->staging_rxon.node_addr, priv->mac_addr, ETH_ALEN);
6313 }
6314
6315 /* Configure Bluetooth device coexistence support */
6316 iwl3945_send_bt_config(priv);
6317
6318 /* Configure the adapter for unassociated operation */
6319 iwl3945_commit_rxon(priv);
6320
6321 /* At this point, the NIC is initialized and operational */
6322 priv->notif_missed_beacons = 0;
6323 set_bit(STATUS_READY, &priv->status);
6324
6325 iwl3945_reg_txpower_periodic(priv);
6326
6327 IWL_DEBUG_INFO("ALIVE processing complete.\n");
6328
6329 if (priv->error_recovering)
6330 iwl3945_error_recovery(priv);
6331
6332 return;
6333
6334 restart:
6335 queue_work(priv->workqueue, &priv->restart);
6336 }
6337
6338 static void iwl3945_cancel_deferred_work(struct iwl3945_priv *priv);
6339
6340 static void __iwl3945_down(struct iwl3945_priv *priv)
6341 {
6342 unsigned long flags;
6343 int exit_pending = test_bit(STATUS_EXIT_PENDING, &priv->status);
6344 struct ieee80211_conf *conf = NULL;
6345
6346 IWL_DEBUG_INFO(DRV_NAME " is going down\n");
6347
6348 conf = ieee80211_get_hw_conf(priv->hw);
6349
6350 if (!exit_pending)
6351 set_bit(STATUS_EXIT_PENDING, &priv->status);
6352
6353 iwl3945_clear_stations_table(priv);
6354
6355 /* Unblock any waiting calls */
6356 wake_up_interruptible_all(&priv->wait_command_queue);
6357
6358 /* Wipe out the EXIT_PENDING status bit if we are not actually
6359 * exiting the module */
6360 if (!exit_pending)
6361 clear_bit(STATUS_EXIT_PENDING, &priv->status);
6362
6363 /* stop and reset the on-board processor */
6364 iwl3945_write32(priv, CSR_RESET, CSR_RESET_REG_FLAG_NEVO_RESET);
6365
6366 /* tell the device to stop sending interrupts */
6367 iwl3945_disable_interrupts(priv);
6368
6369 if (priv->mac80211_registered)
6370 ieee80211_stop_queues(priv->hw);
6371
6372 /* If we have not previously called iwl3945_init() then
6373 * clear all bits but the RF Kill and SUSPEND bits and return */
6374 if (!iwl3945_is_init(priv)) {
6375 priv->status = test_bit(STATUS_RF_KILL_HW, &priv->status) <<
6376 STATUS_RF_KILL_HW |
6377 test_bit(STATUS_RF_KILL_SW, &priv->status) <<
6378 STATUS_RF_KILL_SW |
6379 test_bit(STATUS_IN_SUSPEND, &priv->status) <<
6380 STATUS_IN_SUSPEND;
6381 goto exit;
6382 }
6383
6384 /* ...otherwise clear out all the status bits but the RF Kill and
6385 * SUSPEND bits and continue taking the NIC down. */
6386 priv->status &= test_bit(STATUS_RF_KILL_HW, &priv->status) <<
6387 STATUS_RF_KILL_HW |
6388 test_bit(STATUS_RF_KILL_SW, &priv->status) <<
6389 STATUS_RF_KILL_SW |
6390 test_bit(STATUS_IN_SUSPEND, &priv->status) <<
6391 STATUS_IN_SUSPEND |
6392 test_bit(STATUS_FW_ERROR, &priv->status) <<
6393 STATUS_FW_ERROR;
6394
6395 spin_lock_irqsave(&priv->lock, flags);
6396 iwl3945_clear_bit(priv, CSR_GP_CNTRL, CSR_GP_CNTRL_REG_FLAG_MAC_ACCESS_REQ);
6397 spin_unlock_irqrestore(&priv->lock, flags);
6398
6399 iwl3945_hw_txq_ctx_stop(priv);
6400 iwl3945_hw_rxq_stop(priv);
6401
6402 spin_lock_irqsave(&priv->lock, flags);
6403 if (!iwl3945_grab_nic_access(priv)) {
6404 iwl3945_write_prph(priv, APMG_CLK_DIS_REG,
6405 APMG_CLK_VAL_DMA_CLK_RQT);
6406 iwl3945_release_nic_access(priv);
6407 }
6408 spin_unlock_irqrestore(&priv->lock, flags);
6409
6410 udelay(5);
6411
6412 iwl3945_hw_nic_stop_master(priv);
6413 iwl3945_set_bit(priv, CSR_RESET, CSR_RESET_REG_FLAG_SW_RESET);
6414 iwl3945_hw_nic_reset(priv);
6415
6416 exit:
6417 memset(&priv->card_alive, 0, sizeof(struct iwl3945_alive_resp));
6418
6419 if (priv->ibss_beacon)
6420 dev_kfree_skb(priv->ibss_beacon);
6421 priv->ibss_beacon = NULL;
6422
6423 /* clear out any free frames */
6424 iwl3945_clear_free_frames(priv);
6425 }
6426
6427 static void iwl3945_down(struct iwl3945_priv *priv)
6428 {
6429 mutex_lock(&priv->mutex);
6430 __iwl3945_down(priv);
6431 mutex_unlock(&priv->mutex);
6432
6433 iwl3945_cancel_deferred_work(priv);
6434 }
6435
6436 #define MAX_HW_RESTARTS 5
6437
6438 static int __iwl3945_up(struct iwl3945_priv *priv)
6439 {
6440 DECLARE_MAC_BUF(mac);
6441 int rc, i;
6442
6443 if (test_bit(STATUS_EXIT_PENDING, &priv->status)) {
6444 IWL_WARNING("Exit pending; will not bring the NIC up\n");
6445 return -EIO;
6446 }
6447
6448 if (test_bit(STATUS_RF_KILL_SW, &priv->status)) {
6449 IWL_WARNING("Radio disabled by SW RF kill (module "
6450 "parameter)\n");
6451 return 0;
6452 }
6453
6454 if (!priv->ucode_data_backup.v_addr || !priv->ucode_data.v_addr) {
6455 IWL_ERROR("ucode not available for device bringup\n");
6456 return -EIO;
6457 }
6458
6459 iwl3945_write32(priv, CSR_INT, 0xFFFFFFFF);
6460
6461 rc = iwl3945_hw_nic_init(priv);
6462 if (rc) {
6463 IWL_ERROR("Unable to int nic\n");
6464 return rc;
6465 }
6466
6467 /* make sure rfkill handshake bits are cleared */
6468 iwl3945_write32(priv, CSR_UCODE_DRV_GP1_CLR, CSR_UCODE_SW_BIT_RFKILL);
6469 iwl3945_write32(priv, CSR_UCODE_DRV_GP1_CLR,
6470 CSR_UCODE_DRV_GP1_BIT_CMD_BLOCKED);
6471
6472 /* clear (again), then enable host interrupts */
6473 iwl3945_write32(priv, CSR_INT, 0xFFFFFFFF);
6474 iwl3945_enable_interrupts(priv);
6475
6476 /* really make sure rfkill handshake bits are cleared */
6477 iwl3945_write32(priv, CSR_UCODE_DRV_GP1_CLR, CSR_UCODE_SW_BIT_RFKILL);
6478 iwl3945_write32(priv, CSR_UCODE_DRV_GP1_CLR, CSR_UCODE_SW_BIT_RFKILL);
6479
6480 /* Copy original ucode data image from disk into backup cache.
6481 * This will be used to initialize the on-board processor's
6482 * data SRAM for a clean start when the runtime program first loads. */
6483 memcpy(priv->ucode_data_backup.v_addr, priv->ucode_data.v_addr,
6484 priv->ucode_data.len);
6485
6486 for (i = 0; i < MAX_HW_RESTARTS; i++) {
6487
6488 iwl3945_clear_stations_table(priv);
6489
6490 /* load bootstrap state machine,
6491 * load bootstrap program into processor's memory,
6492 * prepare to load the "initialize" uCode */
6493 rc = iwl3945_load_bsm(priv);
6494
6495 if (rc) {
6496 IWL_ERROR("Unable to set up bootstrap uCode: %d\n", rc);
6497 continue;
6498 }
6499
6500 /* start card; "initialize" will load runtime ucode */
6501 iwl3945_nic_start(priv);
6502
6503 /* MAC Address location in EEPROM is same for 3945/4965 */
6504 get_eeprom_mac(priv, priv->mac_addr);
6505 IWL_DEBUG_INFO("MAC address: %s\n",
6506 print_mac(mac, priv->mac_addr));
6507
6508 SET_IEEE80211_PERM_ADDR(priv->hw, priv->mac_addr);
6509
6510 IWL_DEBUG_INFO(DRV_NAME " is coming up\n");
6511
6512 return 0;
6513 }
6514
6515 set_bit(STATUS_EXIT_PENDING, &priv->status);
6516 __iwl3945_down(priv);
6517
6518 /* tried to restart and config the device for as long as our
6519 * patience could withstand */
6520 IWL_ERROR("Unable to initialize device after %d attempts.\n", i);
6521 return -EIO;
6522 }
6523
6524
6525 /*****************************************************************************
6526 *
6527 * Workqueue callbacks
6528 *
6529 *****************************************************************************/
6530
6531 static void iwl3945_bg_init_alive_start(struct work_struct *data)
6532 {
6533 struct iwl3945_priv *priv =
6534 container_of(data, struct iwl3945_priv, init_alive_start.work);
6535
6536 if (test_bit(STATUS_EXIT_PENDING, &priv->status))
6537 return;
6538
6539 mutex_lock(&priv->mutex);
6540 iwl3945_init_alive_start(priv);
6541 mutex_unlock(&priv->mutex);
6542 }
6543
6544 static void iwl3945_bg_alive_start(struct work_struct *data)
6545 {
6546 struct iwl3945_priv *priv =
6547 container_of(data, struct iwl3945_priv, alive_start.work);
6548
6549 if (test_bit(STATUS_EXIT_PENDING, &priv->status))
6550 return;
6551
6552 mutex_lock(&priv->mutex);
6553 iwl3945_alive_start(priv);
6554 mutex_unlock(&priv->mutex);
6555 }
6556
6557 static void iwl3945_bg_rf_kill(struct work_struct *work)
6558 {
6559 struct iwl3945_priv *priv = container_of(work, struct iwl3945_priv, rf_kill);
6560
6561 wake_up_interruptible(&priv->wait_command_queue);
6562
6563 if (test_bit(STATUS_EXIT_PENDING, &priv->status))
6564 return;
6565
6566 mutex_lock(&priv->mutex);
6567
6568 if (!iwl3945_is_rfkill(priv)) {
6569 IWL_DEBUG(IWL_DL_INFO | IWL_DL_RF_KILL,
6570 "HW and/or SW RF Kill no longer active, restarting "
6571 "device\n");
6572 if (!test_bit(STATUS_EXIT_PENDING, &priv->status))
6573 queue_work(priv->workqueue, &priv->restart);
6574 } else {
6575
6576 if (!test_bit(STATUS_RF_KILL_HW, &priv->status))
6577 IWL_DEBUG_RF_KILL("Can not turn radio back on - "
6578 "disabled by SW switch\n");
6579 else
6580 IWL_WARNING("Radio Frequency Kill Switch is On:\n"
6581 "Kill switch must be turned off for "
6582 "wireless networking to work.\n");
6583 }
6584 mutex_unlock(&priv->mutex);
6585 }
6586
6587 #define IWL_SCAN_CHECK_WATCHDOG (7 * HZ)
6588
6589 static void iwl3945_bg_scan_check(struct work_struct *data)
6590 {
6591 struct iwl3945_priv *priv =
6592 container_of(data, struct iwl3945_priv, scan_check.work);
6593
6594 if (test_bit(STATUS_EXIT_PENDING, &priv->status))
6595 return;
6596
6597 mutex_lock(&priv->mutex);
6598 if (test_bit(STATUS_SCANNING, &priv->status) ||
6599 test_bit(STATUS_SCAN_ABORTING, &priv->status)) {
6600 IWL_DEBUG(IWL_DL_INFO | IWL_DL_SCAN,
6601 "Scan completion watchdog resetting adapter (%dms)\n",
6602 jiffies_to_msecs(IWL_SCAN_CHECK_WATCHDOG));
6603
6604 if (!test_bit(STATUS_EXIT_PENDING, &priv->status))
6605 iwl3945_send_scan_abort(priv);
6606 }
6607 mutex_unlock(&priv->mutex);
6608 }
6609
6610 static void iwl3945_bg_request_scan(struct work_struct *data)
6611 {
6612 struct iwl3945_priv *priv =
6613 container_of(data, struct iwl3945_priv, request_scan);
6614 struct iwl3945_host_cmd cmd = {
6615 .id = REPLY_SCAN_CMD,
6616 .len = sizeof(struct iwl3945_scan_cmd),
6617 .meta.flags = CMD_SIZE_HUGE,
6618 };
6619 int rc = 0;
6620 struct iwl3945_scan_cmd *scan;
6621 struct ieee80211_conf *conf = NULL;
6622 u8 direct_mask;
6623 int phymode;
6624
6625 conf = ieee80211_get_hw_conf(priv->hw);
6626
6627 mutex_lock(&priv->mutex);
6628
6629 if (!iwl3945_is_ready(priv)) {
6630 IWL_WARNING("request scan called when driver not ready.\n");
6631 goto done;
6632 }
6633
6634 /* Make sure the scan wasn't cancelled before this queued work
6635 * was given the chance to run... */
6636 if (!test_bit(STATUS_SCANNING, &priv->status))
6637 goto done;
6638
6639 /* This should never be called or scheduled if there is currently
6640 * a scan active in the hardware. */
6641 if (test_bit(STATUS_SCAN_HW, &priv->status)) {
6642 IWL_DEBUG_INFO("Multiple concurrent scan requests in parallel. "
6643 "Ignoring second request.\n");
6644 rc = -EIO;
6645 goto done;
6646 }
6647
6648 if (test_bit(STATUS_EXIT_PENDING, &priv->status)) {
6649 IWL_DEBUG_SCAN("Aborting scan due to device shutdown\n");
6650 goto done;
6651 }
6652
6653 if (test_bit(STATUS_SCAN_ABORTING, &priv->status)) {
6654 IWL_DEBUG_HC("Scan request while abort pending. Queuing.\n");
6655 goto done;
6656 }
6657
6658 if (iwl3945_is_rfkill(priv)) {
6659 IWL_DEBUG_HC("Aborting scan due to RF Kill activation\n");
6660 goto done;
6661 }
6662
6663 if (!test_bit(STATUS_READY, &priv->status)) {
6664 IWL_DEBUG_HC("Scan request while uninitialized. Queuing.\n");
6665 goto done;
6666 }
6667
6668 if (!priv->scan_bands) {
6669 IWL_DEBUG_HC("Aborting scan due to no requested bands\n");
6670 goto done;
6671 }
6672
6673 if (!priv->scan) {
6674 priv->scan = kmalloc(sizeof(struct iwl3945_scan_cmd) +
6675 IWL_MAX_SCAN_SIZE, GFP_KERNEL);
6676 if (!priv->scan) {
6677 rc = -ENOMEM;
6678 goto done;
6679 }
6680 }
6681 scan = priv->scan;
6682 memset(scan, 0, sizeof(struct iwl3945_scan_cmd) + IWL_MAX_SCAN_SIZE);
6683
6684 scan->quiet_plcp_th = IWL_PLCP_QUIET_THRESH;
6685 scan->quiet_time = IWL_ACTIVE_QUIET_TIME;
6686
6687 if (iwl3945_is_associated(priv)) {
6688 u16 interval = 0;
6689 u32 extra;
6690 u32 suspend_time = 100;
6691 u32 scan_suspend_time = 100;
6692 unsigned long flags;
6693
6694 IWL_DEBUG_INFO("Scanning while associated...\n");
6695
6696 spin_lock_irqsave(&priv->lock, flags);
6697 interval = priv->beacon_int;
6698 spin_unlock_irqrestore(&priv->lock, flags);
6699
6700 scan->suspend_time = 0;
6701 scan->max_out_time = cpu_to_le32(200 * 1024);
6702 if (!interval)
6703 interval = suspend_time;
6704 /*
6705 * suspend time format:
6706 * 0-19: beacon interval in usec (time before exec.)
6707 * 20-23: 0
6708 * 24-31: number of beacons (suspend between channels)
6709 */
6710
6711 extra = (suspend_time / interval) << 24;
6712 scan_suspend_time = 0xFF0FFFFF &
6713 (extra | ((suspend_time % interval) * 1024));
6714
6715 scan->suspend_time = cpu_to_le32(scan_suspend_time);
6716 IWL_DEBUG_SCAN("suspend_time 0x%X beacon interval %d\n",
6717 scan_suspend_time, interval);
6718 }
6719
6720 /* We should add the ability for user to lock to PASSIVE ONLY */
6721 if (priv->one_direct_scan) {
6722 IWL_DEBUG_SCAN
6723 ("Kicking off one direct scan for '%s'\n",
6724 iwl3945_escape_essid(priv->direct_ssid,
6725 priv->direct_ssid_len));
6726 scan->direct_scan[0].id = WLAN_EID_SSID;
6727 scan->direct_scan[0].len = priv->direct_ssid_len;
6728 memcpy(scan->direct_scan[0].ssid,
6729 priv->direct_ssid, priv->direct_ssid_len);
6730 direct_mask = 1;
6731 } else if (!iwl3945_is_associated(priv) && priv->essid_len) {
6732 scan->direct_scan[0].id = WLAN_EID_SSID;
6733 scan->direct_scan[0].len = priv->essid_len;
6734 memcpy(scan->direct_scan[0].ssid, priv->essid, priv->essid_len);
6735 direct_mask = 1;
6736 } else
6737 direct_mask = 0;
6738
6739 /* We don't build a direct scan probe request; the uCode will do
6740 * that based on the direct_mask added to each channel entry */
6741 scan->tx_cmd.len = cpu_to_le16(
6742 iwl3945_fill_probe_req(priv, (struct ieee80211_mgmt *)scan->data,
6743 IWL_MAX_SCAN_SIZE - sizeof(scan), 0));
6744 scan->tx_cmd.tx_flags = TX_CMD_FLG_SEQ_CTL_MSK;
6745 scan->tx_cmd.sta_id = priv->hw_setting.bcast_sta_id;
6746 scan->tx_cmd.stop_time.life_time = TX_CMD_LIFE_TIME_INFINITE;
6747
6748 /* flags + rate selection */
6749
6750 switch (priv->scan_bands) {
6751 case 2:
6752 scan->flags = RXON_FLG_BAND_24G_MSK | RXON_FLG_AUTO_DETECT_MSK;
6753 scan->tx_cmd.rate = IWL_RATE_1M_PLCP;
6754 scan->good_CRC_th = 0;
6755 phymode = MODE_IEEE80211G;
6756 break;
6757
6758 case 1:
6759 scan->tx_cmd.rate = IWL_RATE_6M_PLCP;
6760 scan->good_CRC_th = IWL_GOOD_CRC_TH;
6761 phymode = MODE_IEEE80211A;
6762 break;
6763
6764 default:
6765 IWL_WARNING("Invalid scan band count\n");
6766 goto done;
6767 }
6768
6769 /* select Rx antennas */
6770 scan->flags |= iwl3945_get_antenna_flags(priv);
6771
6772 if (priv->iw_mode == IEEE80211_IF_TYPE_MNTR)
6773 scan->filter_flags = RXON_FILTER_PROMISC_MSK;
6774
6775 if (direct_mask)
6776 IWL_DEBUG_SCAN
6777 ("Initiating direct scan for %s.\n",
6778 iwl3945_escape_essid(priv->essid, priv->essid_len));
6779 else
6780 IWL_DEBUG_SCAN("Initiating indirect scan.\n");
6781
6782 scan->channel_count =
6783 iwl3945_get_channels_for_scan(
6784 priv, phymode, 1, /* active */
6785 direct_mask,
6786 (void *)&scan->data[le16_to_cpu(scan->tx_cmd.len)]);
6787
6788 cmd.len += le16_to_cpu(scan->tx_cmd.len) +
6789 scan->channel_count * sizeof(struct iwl3945_scan_channel);
6790 cmd.data = scan;
6791 scan->len = cpu_to_le16(cmd.len);
6792
6793 set_bit(STATUS_SCAN_HW, &priv->status);
6794 rc = iwl3945_send_cmd_sync(priv, &cmd);
6795 if (rc)
6796 goto done;
6797
6798 queue_delayed_work(priv->workqueue, &priv->scan_check,
6799 IWL_SCAN_CHECK_WATCHDOG);
6800
6801 mutex_unlock(&priv->mutex);
6802 return;
6803
6804 done:
6805 /* inform mac80211 scan aborted */
6806 queue_work(priv->workqueue, &priv->scan_completed);
6807 mutex_unlock(&priv->mutex);
6808 }
6809
6810 static void iwl3945_bg_up(struct work_struct *data)
6811 {
6812 struct iwl3945_priv *priv = container_of(data, struct iwl3945_priv, up);
6813
6814 if (test_bit(STATUS_EXIT_PENDING, &priv->status))
6815 return;
6816
6817 mutex_lock(&priv->mutex);
6818 __iwl3945_up(priv);
6819 mutex_unlock(&priv->mutex);
6820 }
6821
6822 static void iwl3945_bg_restart(struct work_struct *data)
6823 {
6824 struct iwl3945_priv *priv = container_of(data, struct iwl3945_priv, restart);
6825
6826 if (test_bit(STATUS_EXIT_PENDING, &priv->status))
6827 return;
6828
6829 iwl3945_down(priv);
6830 queue_work(priv->workqueue, &priv->up);
6831 }
6832
6833 static void iwl3945_bg_rx_replenish(struct work_struct *data)
6834 {
6835 struct iwl3945_priv *priv =
6836 container_of(data, struct iwl3945_priv, rx_replenish);
6837
6838 if (test_bit(STATUS_EXIT_PENDING, &priv->status))
6839 return;
6840
6841 mutex_lock(&priv->mutex);
6842 iwl3945_rx_replenish(priv);
6843 mutex_unlock(&priv->mutex);
6844 }
6845
6846 #define IWL_DELAY_NEXT_SCAN (HZ*2)
6847
6848 static void iwl3945_bg_post_associate(struct work_struct *data)
6849 {
6850 struct iwl3945_priv *priv = container_of(data, struct iwl3945_priv,
6851 post_associate.work);
6852
6853 int rc = 0;
6854 struct ieee80211_conf *conf = NULL;
6855 DECLARE_MAC_BUF(mac);
6856
6857 if (priv->iw_mode == IEEE80211_IF_TYPE_AP) {
6858 IWL_ERROR("%s Should not be called in AP mode\n", __FUNCTION__);
6859 return;
6860 }
6861
6862
6863 IWL_DEBUG_ASSOC("Associated as %d to: %s\n",
6864 priv->assoc_id,
6865 print_mac(mac, priv->active_rxon.bssid_addr));
6866
6867 if (test_bit(STATUS_EXIT_PENDING, &priv->status))
6868 return;
6869
6870 mutex_lock(&priv->mutex);
6871
6872 if (!priv->interface_id || !priv->is_open) {
6873 mutex_unlock(&priv->mutex);
6874 return;
6875 }
6876 iwl3945_scan_cancel_timeout(priv, 200);
6877
6878 conf = ieee80211_get_hw_conf(priv->hw);
6879
6880 priv->staging_rxon.filter_flags &= ~RXON_FILTER_ASSOC_MSK;
6881 iwl3945_commit_rxon(priv);
6882
6883 memset(&priv->rxon_timing, 0, sizeof(struct iwl3945_rxon_time_cmd));
6884 iwl3945_setup_rxon_timing(priv);
6885 rc = iwl3945_send_cmd_pdu(priv, REPLY_RXON_TIMING,
6886 sizeof(priv->rxon_timing), &priv->rxon_timing);
6887 if (rc)
6888 IWL_WARNING("REPLY_RXON_TIMING failed - "
6889 "Attempting to continue.\n");
6890
6891 priv->staging_rxon.filter_flags |= RXON_FILTER_ASSOC_MSK;
6892
6893 priv->staging_rxon.assoc_id = cpu_to_le16(priv->assoc_id);
6894
6895 IWL_DEBUG_ASSOC("assoc id %d beacon interval %d\n",
6896 priv->assoc_id, priv->beacon_int);
6897
6898 if (priv->assoc_capability & WLAN_CAPABILITY_SHORT_PREAMBLE)
6899 priv->staging_rxon.flags |= RXON_FLG_SHORT_PREAMBLE_MSK;
6900 else
6901 priv->staging_rxon.flags &= ~RXON_FLG_SHORT_PREAMBLE_MSK;
6902
6903 if (priv->staging_rxon.flags & RXON_FLG_BAND_24G_MSK) {
6904 if (priv->assoc_capability & WLAN_CAPABILITY_SHORT_SLOT_TIME)
6905 priv->staging_rxon.flags |= RXON_FLG_SHORT_SLOT_MSK;
6906 else
6907 priv->staging_rxon.flags &= ~RXON_FLG_SHORT_SLOT_MSK;
6908
6909 if (priv->iw_mode == IEEE80211_IF_TYPE_IBSS)
6910 priv->staging_rxon.flags &= ~RXON_FLG_SHORT_SLOT_MSK;
6911
6912 }
6913
6914 iwl3945_commit_rxon(priv);
6915
6916 switch (priv->iw_mode) {
6917 case IEEE80211_IF_TYPE_STA:
6918 iwl3945_rate_scale_init(priv->hw, IWL_AP_ID);
6919 break;
6920
6921 case IEEE80211_IF_TYPE_IBSS:
6922
6923 /* clear out the station table */
6924 iwl3945_clear_stations_table(priv);
6925
6926 iwl3945_add_station(priv, iwl3945_broadcast_addr, 0, 0);
6927 iwl3945_add_station(priv, priv->bssid, 0, 0);
6928 iwl3945_sync_sta(priv, IWL_STA_ID,
6929 (priv->phymode == MODE_IEEE80211A)?
6930 IWL_RATE_6M_PLCP : IWL_RATE_1M_PLCP,
6931 CMD_ASYNC);
6932 iwl3945_rate_scale_init(priv->hw, IWL_STA_ID);
6933 iwl3945_send_beacon_cmd(priv);
6934
6935 break;
6936
6937 default:
6938 IWL_ERROR("%s Should not be called in %d mode\n",
6939 __FUNCTION__, priv->iw_mode);
6940 break;
6941 }
6942
6943 iwl3945_sequence_reset(priv);
6944
6945 #ifdef CONFIG_IWL3945_QOS
6946 iwl3945_activate_qos(priv, 0);
6947 #endif /* CONFIG_IWL3945_QOS */
6948 /* we have just associated, don't start scan too early */
6949 priv->next_scan_jiffies = jiffies + IWL_DELAY_NEXT_SCAN;
6950 mutex_unlock(&priv->mutex);
6951 }
6952
6953 static void iwl3945_bg_abort_scan(struct work_struct *work)
6954 {
6955 struct iwl3945_priv *priv = container_of(work, struct iwl3945_priv, abort_scan);
6956
6957 if (!iwl3945_is_ready(priv))
6958 return;
6959
6960 mutex_lock(&priv->mutex);
6961
6962 set_bit(STATUS_SCAN_ABORTING, &priv->status);
6963 iwl3945_send_scan_abort(priv);
6964
6965 mutex_unlock(&priv->mutex);
6966 }
6967
6968 static void iwl3945_bg_scan_completed(struct work_struct *work)
6969 {
6970 struct iwl3945_priv *priv =
6971 container_of(work, struct iwl3945_priv, scan_completed);
6972
6973 IWL_DEBUG(IWL_DL_INFO | IWL_DL_SCAN, "SCAN complete scan\n");
6974
6975 if (test_bit(STATUS_EXIT_PENDING, &priv->status))
6976 return;
6977
6978 ieee80211_scan_completed(priv->hw);
6979
6980 /* Since setting the TXPOWER may have been deferred while
6981 * performing the scan, fire one off */
6982 mutex_lock(&priv->mutex);
6983 iwl3945_hw_reg_send_txpower(priv);
6984 mutex_unlock(&priv->mutex);
6985 }
6986
6987 /*****************************************************************************
6988 *
6989 * mac80211 entry point functions
6990 *
6991 *****************************************************************************/
6992
6993 static int iwl3945_mac_start(struct ieee80211_hw *hw)
6994 {
6995 struct iwl3945_priv *priv = hw->priv;
6996
6997 IWL_DEBUG_MAC80211("enter\n");
6998
6999 /* we should be verifying the device is ready to be opened */
7000 mutex_lock(&priv->mutex);
7001
7002 priv->is_open = 1;
7003
7004 if (!iwl3945_is_rfkill(priv))
7005 ieee80211_start_queues(priv->hw);
7006
7007 mutex_unlock(&priv->mutex);
7008 IWL_DEBUG_MAC80211("leave\n");
7009 return 0;
7010 }
7011
7012 static void iwl3945_mac_stop(struct ieee80211_hw *hw)
7013 {
7014 struct iwl3945_priv *priv = hw->priv;
7015
7016 IWL_DEBUG_MAC80211("enter\n");
7017
7018
7019 mutex_lock(&priv->mutex);
7020 /* stop mac, cancel any scan request and clear
7021 * RXON_FILTER_ASSOC_MSK BIT
7022 */
7023 priv->is_open = 0;
7024 if (!iwl3945_is_ready_rf(priv)) {
7025 IWL_DEBUG_MAC80211("leave - RF not ready\n");
7026 mutex_unlock(&priv->mutex);
7027 return;
7028 }
7029
7030 iwl3945_scan_cancel_timeout(priv, 100);
7031 cancel_delayed_work(&priv->post_associate);
7032 priv->staging_rxon.filter_flags &= ~RXON_FILTER_ASSOC_MSK;
7033 iwl3945_commit_rxon(priv);
7034 mutex_unlock(&priv->mutex);
7035
7036 IWL_DEBUG_MAC80211("leave\n");
7037 }
7038
7039 static int iwl3945_mac_tx(struct ieee80211_hw *hw, struct sk_buff *skb,
7040 struct ieee80211_tx_control *ctl)
7041 {
7042 struct iwl3945_priv *priv = hw->priv;
7043
7044 IWL_DEBUG_MAC80211("enter\n");
7045
7046 if (priv->iw_mode == IEEE80211_IF_TYPE_MNTR) {
7047 IWL_DEBUG_MAC80211("leave - monitor\n");
7048 return -1;
7049 }
7050
7051 IWL_DEBUG_TX("dev->xmit(%d bytes) at rate 0x%02x\n", skb->len,
7052 ctl->tx_rate);
7053
7054 if (iwl3945_tx_skb(priv, skb, ctl))
7055 dev_kfree_skb_any(skb);
7056
7057 IWL_DEBUG_MAC80211("leave\n");
7058 return 0;
7059 }
7060
7061 static int iwl3945_mac_add_interface(struct ieee80211_hw *hw,
7062 struct ieee80211_if_init_conf *conf)
7063 {
7064 struct iwl3945_priv *priv = hw->priv;
7065 unsigned long flags;
7066 DECLARE_MAC_BUF(mac);
7067
7068 IWL_DEBUG_MAC80211("enter: id %d, type %d\n", conf->if_id, conf->type);
7069
7070 if (priv->interface_id) {
7071 IWL_DEBUG_MAC80211("leave - interface_id != 0\n");
7072 return -EOPNOTSUPP;
7073 }
7074
7075 spin_lock_irqsave(&priv->lock, flags);
7076 priv->interface_id = conf->if_id;
7077
7078 spin_unlock_irqrestore(&priv->lock, flags);
7079
7080 mutex_lock(&priv->mutex);
7081
7082 if (conf->mac_addr) {
7083 IWL_DEBUG_MAC80211("Set: %s\n", print_mac(mac, conf->mac_addr));
7084 memcpy(priv->mac_addr, conf->mac_addr, ETH_ALEN);
7085 }
7086
7087 iwl3945_set_mode(priv, conf->type);
7088
7089 IWL_DEBUG_MAC80211("leave\n");
7090 mutex_unlock(&priv->mutex);
7091
7092 return 0;
7093 }
7094
7095 /**
7096 * iwl3945_mac_config - mac80211 config callback
7097 *
7098 * We ignore conf->flags & IEEE80211_CONF_SHORT_SLOT_TIME since it seems to
7099 * be set inappropriately and the driver currently sets the hardware up to
7100 * use it whenever needed.
7101 */
7102 static int iwl3945_mac_config(struct ieee80211_hw *hw, struct ieee80211_conf *conf)
7103 {
7104 struct iwl3945_priv *priv = hw->priv;
7105 const struct iwl3945_channel_info *ch_info;
7106 unsigned long flags;
7107
7108 mutex_lock(&priv->mutex);
7109 IWL_DEBUG_MAC80211("enter to channel %d\n", conf->channel);
7110
7111 if (!iwl3945_is_ready(priv)) {
7112 IWL_DEBUG_MAC80211("leave - not ready\n");
7113 mutex_unlock(&priv->mutex);
7114 return -EIO;
7115 }
7116
7117 /* TODO: Figure out how to get ieee80211_local->sta_scanning w/ only
7118 * what is exposed through include/ declarations */
7119 if (unlikely(!iwl3945_param_disable_hw_scan &&
7120 test_bit(STATUS_SCANNING, &priv->status))) {
7121 IWL_DEBUG_MAC80211("leave - scanning\n");
7122 mutex_unlock(&priv->mutex);
7123 return 0;
7124 }
7125
7126 spin_lock_irqsave(&priv->lock, flags);
7127
7128 ch_info = iwl3945_get_channel_info(priv, conf->phymode, conf->channel);
7129 if (!is_channel_valid(ch_info)) {
7130 IWL_DEBUG_SCAN("Channel %d [%d] is INVALID for this SKU.\n",
7131 conf->channel, conf->phymode);
7132 IWL_DEBUG_MAC80211("leave - invalid channel\n");
7133 spin_unlock_irqrestore(&priv->lock, flags);
7134 mutex_unlock(&priv->mutex);
7135 return -EINVAL;
7136 }
7137
7138 iwl3945_set_rxon_channel(priv, conf->phymode, conf->channel);
7139
7140 iwl3945_set_flags_for_phymode(priv, conf->phymode);
7141
7142 /* The list of supported rates and rate mask can be different
7143 * for each phymode; since the phymode may have changed, reset
7144 * the rate mask to what mac80211 lists */
7145 iwl3945_set_rate(priv);
7146
7147 spin_unlock_irqrestore(&priv->lock, flags);
7148
7149 #ifdef IEEE80211_CONF_CHANNEL_SWITCH
7150 if (conf->flags & IEEE80211_CONF_CHANNEL_SWITCH) {
7151 iwl3945_hw_channel_switch(priv, conf->channel);
7152 mutex_unlock(&priv->mutex);
7153 return 0;
7154 }
7155 #endif
7156
7157 iwl3945_radio_kill_sw(priv, !conf->radio_enabled);
7158
7159 if (!conf->radio_enabled) {
7160 IWL_DEBUG_MAC80211("leave - radio disabled\n");
7161 mutex_unlock(&priv->mutex);
7162 return 0;
7163 }
7164
7165 if (iwl3945_is_rfkill(priv)) {
7166 IWL_DEBUG_MAC80211("leave - RF kill\n");
7167 mutex_unlock(&priv->mutex);
7168 return -EIO;
7169 }
7170
7171 iwl3945_set_rate(priv);
7172
7173 if (memcmp(&priv->active_rxon,
7174 &priv->staging_rxon, sizeof(priv->staging_rxon)))
7175 iwl3945_commit_rxon(priv);
7176 else
7177 IWL_DEBUG_INFO("No re-sending same RXON configuration.\n");
7178
7179 IWL_DEBUG_MAC80211("leave\n");
7180
7181 mutex_unlock(&priv->mutex);
7182
7183 return 0;
7184 }
7185
7186 static void iwl3945_config_ap(struct iwl3945_priv *priv)
7187 {
7188 int rc = 0;
7189
7190 if (priv->status & STATUS_EXIT_PENDING)
7191 return;
7192
7193 /* The following should be done only at AP bring up */
7194 if ((priv->active_rxon.filter_flags & RXON_FILTER_ASSOC_MSK) == 0) {
7195
7196 /* RXON - unassoc (to set timing command) */
7197 priv->staging_rxon.filter_flags &= ~RXON_FILTER_ASSOC_MSK;
7198 iwl3945_commit_rxon(priv);
7199
7200 /* RXON Timing */
7201 memset(&priv->rxon_timing, 0, sizeof(struct iwl3945_rxon_time_cmd));
7202 iwl3945_setup_rxon_timing(priv);
7203 rc = iwl3945_send_cmd_pdu(priv, REPLY_RXON_TIMING,
7204 sizeof(priv->rxon_timing), &priv->rxon_timing);
7205 if (rc)
7206 IWL_WARNING("REPLY_RXON_TIMING failed - "
7207 "Attempting to continue.\n");
7208
7209 /* FIXME: what should be the assoc_id for AP? */
7210 priv->staging_rxon.assoc_id = cpu_to_le16(priv->assoc_id);
7211 if (priv->assoc_capability & WLAN_CAPABILITY_SHORT_PREAMBLE)
7212 priv->staging_rxon.flags |=
7213 RXON_FLG_SHORT_PREAMBLE_MSK;
7214 else
7215 priv->staging_rxon.flags &=
7216 ~RXON_FLG_SHORT_PREAMBLE_MSK;
7217
7218 if (priv->staging_rxon.flags & RXON_FLG_BAND_24G_MSK) {
7219 if (priv->assoc_capability &
7220 WLAN_CAPABILITY_SHORT_SLOT_TIME)
7221 priv->staging_rxon.flags |=
7222 RXON_FLG_SHORT_SLOT_MSK;
7223 else
7224 priv->staging_rxon.flags &=
7225 ~RXON_FLG_SHORT_SLOT_MSK;
7226
7227 if (priv->iw_mode == IEEE80211_IF_TYPE_IBSS)
7228 priv->staging_rxon.flags &=
7229 ~RXON_FLG_SHORT_SLOT_MSK;
7230 }
7231 /* restore RXON assoc */
7232 priv->staging_rxon.filter_flags |= RXON_FILTER_ASSOC_MSK;
7233 iwl3945_commit_rxon(priv);
7234 iwl3945_add_station(priv, iwl3945_broadcast_addr, 0, 0);
7235 }
7236 iwl3945_send_beacon_cmd(priv);
7237
7238 /* FIXME - we need to add code here to detect a totally new
7239 * configuration, reset the AP, unassoc, rxon timing, assoc,
7240 * clear sta table, add BCAST sta... */
7241 }
7242
7243 static int iwl3945_mac_config_interface(struct ieee80211_hw *hw, int if_id,
7244 struct ieee80211_if_conf *conf)
7245 {
7246 struct iwl3945_priv *priv = hw->priv;
7247 DECLARE_MAC_BUF(mac);
7248 unsigned long flags;
7249 int rc;
7250
7251 if (conf == NULL)
7252 return -EIO;
7253
7254 /* XXX: this MUST use conf->mac_addr */
7255
7256 if ((priv->iw_mode == IEEE80211_IF_TYPE_AP) &&
7257 (!conf->beacon || !conf->ssid_len)) {
7258 IWL_DEBUG_MAC80211
7259 ("Leaving in AP mode because HostAPD is not ready.\n");
7260 return 0;
7261 }
7262
7263 mutex_lock(&priv->mutex);
7264
7265 IWL_DEBUG_MAC80211("enter: interface id %d\n", if_id);
7266 if (conf->bssid)
7267 IWL_DEBUG_MAC80211("bssid: %s\n",
7268 print_mac(mac, conf->bssid));
7269
7270 /*
7271 * very dubious code was here; the probe filtering flag is never set:
7272 *
7273 if (unlikely(test_bit(STATUS_SCANNING, &priv->status)) &&
7274 !(priv->hw->flags & IEEE80211_HW_NO_PROBE_FILTERING)) {
7275 */
7276 if (unlikely(test_bit(STATUS_SCANNING, &priv->status))) {
7277 IWL_DEBUG_MAC80211("leave - scanning\n");
7278 mutex_unlock(&priv->mutex);
7279 return 0;
7280 }
7281
7282 if (priv->interface_id != if_id) {
7283 IWL_DEBUG_MAC80211("leave - interface_id != if_id\n");
7284 mutex_unlock(&priv->mutex);
7285 return 0;
7286 }
7287
7288 if (priv->iw_mode == IEEE80211_IF_TYPE_AP) {
7289 if (!conf->bssid) {
7290 conf->bssid = priv->mac_addr;
7291 memcpy(priv->bssid, priv->mac_addr, ETH_ALEN);
7292 IWL_DEBUG_MAC80211("bssid was set to: %s\n",
7293 print_mac(mac, conf->bssid));
7294 }
7295 if (priv->ibss_beacon)
7296 dev_kfree_skb(priv->ibss_beacon);
7297
7298 priv->ibss_beacon = conf->beacon;
7299 }
7300
7301 if (iwl3945_is_rfkill(priv))
7302 goto done;
7303
7304 if (conf->bssid && !is_zero_ether_addr(conf->bssid) &&
7305 !is_multicast_ether_addr(conf->bssid)) {
7306 /* If there is currently a HW scan going on in the background
7307 * then we need to cancel it else the RXON below will fail. */
7308 if (iwl3945_scan_cancel_timeout(priv, 100)) {
7309 IWL_WARNING("Aborted scan still in progress "
7310 "after 100ms\n");
7311 IWL_DEBUG_MAC80211("leaving - scan abort failed.\n");
7312 mutex_unlock(&priv->mutex);
7313 return -EAGAIN;
7314 }
7315 memcpy(priv->staging_rxon.bssid_addr, conf->bssid, ETH_ALEN);
7316
7317 /* TODO: Audit driver for usage of these members and see
7318 * if mac80211 deprecates them (priv->bssid looks like it
7319 * shouldn't be there, but I haven't scanned the IBSS code
7320 * to verify) - jpk */
7321 memcpy(priv->bssid, conf->bssid, ETH_ALEN);
7322
7323 if (priv->iw_mode == IEEE80211_IF_TYPE_AP)
7324 iwl3945_config_ap(priv);
7325 else {
7326 rc = iwl3945_commit_rxon(priv);
7327 if ((priv->iw_mode == IEEE80211_IF_TYPE_STA) && rc)
7328 iwl3945_add_station(priv,
7329 priv->active_rxon.bssid_addr, 1, 0);
7330 }
7331
7332 } else {
7333 iwl3945_scan_cancel_timeout(priv, 100);
7334 priv->staging_rxon.filter_flags &= ~RXON_FILTER_ASSOC_MSK;
7335 iwl3945_commit_rxon(priv);
7336 }
7337
7338 done:
7339 spin_lock_irqsave(&priv->lock, flags);
7340 if (!conf->ssid_len)
7341 memset(priv->essid, 0, IW_ESSID_MAX_SIZE);
7342 else
7343 memcpy(priv->essid, conf->ssid, conf->ssid_len);
7344
7345 priv->essid_len = conf->ssid_len;
7346 spin_unlock_irqrestore(&priv->lock, flags);
7347
7348 IWL_DEBUG_MAC80211("leave\n");
7349 mutex_unlock(&priv->mutex);
7350
7351 return 0;
7352 }
7353
7354 static void iwl3945_configure_filter(struct ieee80211_hw *hw,
7355 unsigned int changed_flags,
7356 unsigned int *total_flags,
7357 int mc_count, struct dev_addr_list *mc_list)
7358 {
7359 /*
7360 * XXX: dummy
7361 * see also iwl3945_connection_init_rx_config
7362 */
7363 *total_flags = 0;
7364 }
7365
7366 static void iwl3945_mac_remove_interface(struct ieee80211_hw *hw,
7367 struct ieee80211_if_init_conf *conf)
7368 {
7369 struct iwl3945_priv *priv = hw->priv;
7370
7371 IWL_DEBUG_MAC80211("enter\n");
7372
7373 mutex_lock(&priv->mutex);
7374
7375 if (iwl3945_is_ready_rf(priv)) {
7376 iwl3945_scan_cancel_timeout(priv, 100);
7377 cancel_delayed_work(&priv->post_associate);
7378 priv->staging_rxon.filter_flags &= ~RXON_FILTER_ASSOC_MSK;
7379 iwl3945_commit_rxon(priv);
7380 }
7381 if (priv->interface_id == conf->if_id) {
7382 priv->interface_id = 0;
7383 memset(priv->bssid, 0, ETH_ALEN);
7384 memset(priv->essid, 0, IW_ESSID_MAX_SIZE);
7385 priv->essid_len = 0;
7386 }
7387 mutex_unlock(&priv->mutex);
7388
7389 IWL_DEBUG_MAC80211("leave\n");
7390
7391 }
7392
7393 static int iwl3945_mac_hw_scan(struct ieee80211_hw *hw, u8 *ssid, size_t len)
7394 {
7395 int rc = 0;
7396 unsigned long flags;
7397 struct iwl3945_priv *priv = hw->priv;
7398
7399 IWL_DEBUG_MAC80211("enter\n");
7400
7401 mutex_lock(&priv->mutex);
7402 spin_lock_irqsave(&priv->lock, flags);
7403
7404 if (!iwl3945_is_ready_rf(priv)) {
7405 rc = -EIO;
7406 IWL_DEBUG_MAC80211("leave - not ready or exit pending\n");
7407 goto out_unlock;
7408 }
7409
7410 if (priv->iw_mode == IEEE80211_IF_TYPE_AP) { /* APs don't scan */
7411 rc = -EIO;
7412 IWL_ERROR("ERROR: APs don't scan\n");
7413 goto out_unlock;
7414 }
7415
7416 /* we don't schedule scan within next_scan_jiffies period */
7417 if (priv->next_scan_jiffies &&
7418 time_after(priv->next_scan_jiffies, jiffies)) {
7419 rc = -EAGAIN;
7420 goto out_unlock;
7421 }
7422 /* if we just finished scan ask for delay */
7423 if (priv->last_scan_jiffies && time_after(priv->last_scan_jiffies +
7424 IWL_DELAY_NEXT_SCAN, jiffies)) {
7425 rc = -EAGAIN;
7426 goto out_unlock;
7427 }
7428 if (len) {
7429 IWL_DEBUG_SCAN("direct scan for %s [%d]\n ",
7430 iwl3945_escape_essid(ssid, len), (int)len);
7431
7432 priv->one_direct_scan = 1;
7433 priv->direct_ssid_len = (u8)
7434 min((u8) len, (u8) IW_ESSID_MAX_SIZE);
7435 memcpy(priv->direct_ssid, ssid, priv->direct_ssid_len);
7436 } else
7437 priv->one_direct_scan = 0;
7438
7439 rc = iwl3945_scan_initiate(priv);
7440
7441 IWL_DEBUG_MAC80211("leave\n");
7442
7443 out_unlock:
7444 spin_unlock_irqrestore(&priv->lock, flags);
7445 mutex_unlock(&priv->mutex);
7446
7447 return rc;
7448 }
7449
7450 static int iwl3945_mac_set_key(struct ieee80211_hw *hw, enum set_key_cmd cmd,
7451 const u8 *local_addr, const u8 *addr,
7452 struct ieee80211_key_conf *key)
7453 {
7454 struct iwl3945_priv *priv = hw->priv;
7455 int rc = 0;
7456 u8 sta_id;
7457
7458 IWL_DEBUG_MAC80211("enter\n");
7459
7460 if (!iwl3945_param_hwcrypto) {
7461 IWL_DEBUG_MAC80211("leave - hwcrypto disabled\n");
7462 return -EOPNOTSUPP;
7463 }
7464
7465 if (is_zero_ether_addr(addr))
7466 /* only support pairwise keys */
7467 return -EOPNOTSUPP;
7468
7469 sta_id = iwl3945_hw_find_station(priv, addr);
7470 if (sta_id == IWL_INVALID_STATION) {
7471 DECLARE_MAC_BUF(mac);
7472
7473 IWL_DEBUG_MAC80211("leave - %s not in station map.\n",
7474 print_mac(mac, addr));
7475 return -EINVAL;
7476 }
7477
7478 mutex_lock(&priv->mutex);
7479
7480 iwl3945_scan_cancel_timeout(priv, 100);
7481
7482 switch (cmd) {
7483 case SET_KEY:
7484 rc = iwl3945_update_sta_key_info(priv, key, sta_id);
7485 if (!rc) {
7486 iwl3945_set_rxon_hwcrypto(priv, 1);
7487 iwl3945_commit_rxon(priv);
7488 key->hw_key_idx = sta_id;
7489 IWL_DEBUG_MAC80211("set_key success, using hwcrypto\n");
7490 key->flags |= IEEE80211_KEY_FLAG_GENERATE_IV;
7491 }
7492 break;
7493 case DISABLE_KEY:
7494 rc = iwl3945_clear_sta_key_info(priv, sta_id);
7495 if (!rc) {
7496 iwl3945_set_rxon_hwcrypto(priv, 0);
7497 iwl3945_commit_rxon(priv);
7498 IWL_DEBUG_MAC80211("disable hwcrypto key\n");
7499 }
7500 break;
7501 default:
7502 rc = -EINVAL;
7503 }
7504
7505 IWL_DEBUG_MAC80211("leave\n");
7506 mutex_unlock(&priv->mutex);
7507
7508 return rc;
7509 }
7510
7511 static int iwl3945_mac_conf_tx(struct ieee80211_hw *hw, int queue,
7512 const struct ieee80211_tx_queue_params *params)
7513 {
7514 struct iwl3945_priv *priv = hw->priv;
7515 #ifdef CONFIG_IWL3945_QOS
7516 unsigned long flags;
7517 int q;
7518 #endif /* CONFIG_IWL3945_QOS */
7519
7520 IWL_DEBUG_MAC80211("enter\n");
7521
7522 if (!iwl3945_is_ready_rf(priv)) {
7523 IWL_DEBUG_MAC80211("leave - RF not ready\n");
7524 return -EIO;
7525 }
7526
7527 if (queue >= AC_NUM) {
7528 IWL_DEBUG_MAC80211("leave - queue >= AC_NUM %d\n", queue);
7529 return 0;
7530 }
7531
7532 #ifdef CONFIG_IWL3945_QOS
7533 if (!priv->qos_data.qos_enable) {
7534 priv->qos_data.qos_active = 0;
7535 IWL_DEBUG_MAC80211("leave - qos not enabled\n");
7536 return 0;
7537 }
7538 q = AC_NUM - 1 - queue;
7539
7540 spin_lock_irqsave(&priv->lock, flags);
7541
7542 priv->qos_data.def_qos_parm.ac[q].cw_min = cpu_to_le16(params->cw_min);
7543 priv->qos_data.def_qos_parm.ac[q].cw_max = cpu_to_le16(params->cw_max);
7544 priv->qos_data.def_qos_parm.ac[q].aifsn = params->aifs;
7545 priv->qos_data.def_qos_parm.ac[q].edca_txop =
7546 cpu_to_le16((params->burst_time * 100));
7547
7548 priv->qos_data.def_qos_parm.ac[q].reserved1 = 0;
7549 priv->qos_data.qos_active = 1;
7550
7551 spin_unlock_irqrestore(&priv->lock, flags);
7552
7553 mutex_lock(&priv->mutex);
7554 if (priv->iw_mode == IEEE80211_IF_TYPE_AP)
7555 iwl3945_activate_qos(priv, 1);
7556 else if (priv->assoc_id && iwl3945_is_associated(priv))
7557 iwl3945_activate_qos(priv, 0);
7558
7559 mutex_unlock(&priv->mutex);
7560
7561 #endif /*CONFIG_IWL3945_QOS */
7562
7563 IWL_DEBUG_MAC80211("leave\n");
7564 return 0;
7565 }
7566
7567 static int iwl3945_mac_get_tx_stats(struct ieee80211_hw *hw,
7568 struct ieee80211_tx_queue_stats *stats)
7569 {
7570 struct iwl3945_priv *priv = hw->priv;
7571 int i, avail;
7572 struct iwl3945_tx_queue *txq;
7573 struct iwl3945_queue *q;
7574 unsigned long flags;
7575
7576 IWL_DEBUG_MAC80211("enter\n");
7577
7578 if (!iwl3945_is_ready_rf(priv)) {
7579 IWL_DEBUG_MAC80211("leave - RF not ready\n");
7580 return -EIO;
7581 }
7582
7583 spin_lock_irqsave(&priv->lock, flags);
7584
7585 for (i = 0; i < AC_NUM; i++) {
7586 txq = &priv->txq[i];
7587 q = &txq->q;
7588 avail = iwl3945_queue_space(q);
7589
7590 stats->data[i].len = q->n_window - avail;
7591 stats->data[i].limit = q->n_window - q->high_mark;
7592 stats->data[i].count = q->n_window;
7593
7594 }
7595 spin_unlock_irqrestore(&priv->lock, flags);
7596
7597 IWL_DEBUG_MAC80211("leave\n");
7598
7599 return 0;
7600 }
7601
7602 static int iwl3945_mac_get_stats(struct ieee80211_hw *hw,
7603 struct ieee80211_low_level_stats *stats)
7604 {
7605 IWL_DEBUG_MAC80211("enter\n");
7606 IWL_DEBUG_MAC80211("leave\n");
7607
7608 return 0;
7609 }
7610
7611 static u64 iwl3945_mac_get_tsf(struct ieee80211_hw *hw)
7612 {
7613 IWL_DEBUG_MAC80211("enter\n");
7614 IWL_DEBUG_MAC80211("leave\n");
7615
7616 return 0;
7617 }
7618
7619 static void iwl3945_mac_reset_tsf(struct ieee80211_hw *hw)
7620 {
7621 struct iwl3945_priv *priv = hw->priv;
7622 unsigned long flags;
7623
7624 mutex_lock(&priv->mutex);
7625 IWL_DEBUG_MAC80211("enter\n");
7626
7627 #ifdef CONFIG_IWL3945_QOS
7628 iwl3945_reset_qos(priv);
7629 #endif
7630 cancel_delayed_work(&priv->post_associate);
7631
7632 spin_lock_irqsave(&priv->lock, flags);
7633 priv->assoc_id = 0;
7634 priv->assoc_capability = 0;
7635 priv->call_post_assoc_from_beacon = 0;
7636
7637 /* new association get rid of ibss beacon skb */
7638 if (priv->ibss_beacon)
7639 dev_kfree_skb(priv->ibss_beacon);
7640
7641 priv->ibss_beacon = NULL;
7642
7643 priv->beacon_int = priv->hw->conf.beacon_int;
7644 priv->timestamp1 = 0;
7645 priv->timestamp0 = 0;
7646 if ((priv->iw_mode == IEEE80211_IF_TYPE_STA))
7647 priv->beacon_int = 0;
7648
7649 spin_unlock_irqrestore(&priv->lock, flags);
7650
7651 if (!iwl3945_is_ready_rf(priv)) {
7652 IWL_DEBUG_MAC80211("leave - not ready\n");
7653 mutex_unlock(&priv->mutex);
7654 return;
7655 }
7656
7657 /* we are restarting association process
7658 * clear RXON_FILTER_ASSOC_MSK bit
7659 */
7660 if (priv->iw_mode != IEEE80211_IF_TYPE_AP) {
7661 iwl3945_scan_cancel_timeout(priv, 100);
7662 priv->staging_rxon.filter_flags &= ~RXON_FILTER_ASSOC_MSK;
7663 iwl3945_commit_rxon(priv);
7664 }
7665
7666 /* Per mac80211.h: This is only used in IBSS mode... */
7667 if (priv->iw_mode != IEEE80211_IF_TYPE_IBSS) {
7668
7669 IWL_DEBUG_MAC80211("leave - not in IBSS\n");
7670 mutex_unlock(&priv->mutex);
7671 return;
7672 }
7673
7674 priv->only_active_channel = 0;
7675
7676 iwl3945_set_rate(priv);
7677
7678 mutex_unlock(&priv->mutex);
7679
7680 IWL_DEBUG_MAC80211("leave\n");
7681
7682 }
7683
7684 static int iwl3945_mac_beacon_update(struct ieee80211_hw *hw, struct sk_buff *skb,
7685 struct ieee80211_tx_control *control)
7686 {
7687 struct iwl3945_priv *priv = hw->priv;
7688 unsigned long flags;
7689
7690 mutex_lock(&priv->mutex);
7691 IWL_DEBUG_MAC80211("enter\n");
7692
7693 if (!iwl3945_is_ready_rf(priv)) {
7694 IWL_DEBUG_MAC80211("leave - RF not ready\n");
7695 mutex_unlock(&priv->mutex);
7696 return -EIO;
7697 }
7698
7699 if (priv->iw_mode != IEEE80211_IF_TYPE_IBSS) {
7700 IWL_DEBUG_MAC80211("leave - not IBSS\n");
7701 mutex_unlock(&priv->mutex);
7702 return -EIO;
7703 }
7704
7705 spin_lock_irqsave(&priv->lock, flags);
7706
7707 if (priv->ibss_beacon)
7708 dev_kfree_skb(priv->ibss_beacon);
7709
7710 priv->ibss_beacon = skb;
7711
7712 priv->assoc_id = 0;
7713
7714 IWL_DEBUG_MAC80211("leave\n");
7715 spin_unlock_irqrestore(&priv->lock, flags);
7716
7717 #ifdef CONFIG_IWL3945_QOS
7718 iwl3945_reset_qos(priv);
7719 #endif
7720
7721 queue_work(priv->workqueue, &priv->post_associate.work);
7722
7723 mutex_unlock(&priv->mutex);
7724
7725 return 0;
7726 }
7727
7728 /*****************************************************************************
7729 *
7730 * sysfs attributes
7731 *
7732 *****************************************************************************/
7733
7734 #ifdef CONFIG_IWL3945_DEBUG
7735
7736 /*
7737 * The following adds a new attribute to the sysfs representation
7738 * of this device driver (i.e. a new file in /sys/bus/pci/drivers/iwl/)
7739 * used for controlling the debug level.
7740 *
7741 * See the level definitions in iwl for details.
7742 */
7743
7744 static ssize_t show_debug_level(struct device_driver *d, char *buf)
7745 {
7746 return sprintf(buf, "0x%08X\n", iwl3945_debug_level);
7747 }
7748 static ssize_t store_debug_level(struct device_driver *d,
7749 const char *buf, size_t count)
7750 {
7751 char *p = (char *)buf;
7752 u32 val;
7753
7754 val = simple_strtoul(p, &p, 0);
7755 if (p == buf)
7756 printk(KERN_INFO DRV_NAME
7757 ": %s is not in hex or decimal form.\n", buf);
7758 else
7759 iwl3945_debug_level = val;
7760
7761 return strnlen(buf, count);
7762 }
7763
7764 static DRIVER_ATTR(debug_level, S_IWUSR | S_IRUGO,
7765 show_debug_level, store_debug_level);
7766
7767 #endif /* CONFIG_IWL3945_DEBUG */
7768
7769 static ssize_t show_rf_kill(struct device *d,
7770 struct device_attribute *attr, char *buf)
7771 {
7772 /*
7773 * 0 - RF kill not enabled
7774 * 1 - SW based RF kill active (sysfs)
7775 * 2 - HW based RF kill active
7776 * 3 - Both HW and SW based RF kill active
7777 */
7778 struct iwl3945_priv *priv = (struct iwl3945_priv *)d->driver_data;
7779 int val = (test_bit(STATUS_RF_KILL_SW, &priv->status) ? 0x1 : 0x0) |
7780 (test_bit(STATUS_RF_KILL_HW, &priv->status) ? 0x2 : 0x0);
7781
7782 return sprintf(buf, "%i\n", val);
7783 }
7784
7785 static ssize_t store_rf_kill(struct device *d,
7786 struct device_attribute *attr,
7787 const char *buf, size_t count)
7788 {
7789 struct iwl3945_priv *priv = (struct iwl3945_priv *)d->driver_data;
7790
7791 mutex_lock(&priv->mutex);
7792 iwl3945_radio_kill_sw(priv, buf[0] == '1');
7793 mutex_unlock(&priv->mutex);
7794
7795 return count;
7796 }
7797
7798 static DEVICE_ATTR(rf_kill, S_IWUSR | S_IRUGO, show_rf_kill, store_rf_kill);
7799
7800 static ssize_t show_temperature(struct device *d,
7801 struct device_attribute *attr, char *buf)
7802 {
7803 struct iwl3945_priv *priv = (struct iwl3945_priv *)d->driver_data;
7804
7805 if (!iwl3945_is_alive(priv))
7806 return -EAGAIN;
7807
7808 return sprintf(buf, "%d\n", iwl3945_hw_get_temperature(priv));
7809 }
7810
7811 static DEVICE_ATTR(temperature, S_IRUGO, show_temperature, NULL);
7812
7813 static ssize_t show_rs_window(struct device *d,
7814 struct device_attribute *attr,
7815 char *buf)
7816 {
7817 struct iwl3945_priv *priv = d->driver_data;
7818 return iwl3945_fill_rs_info(priv->hw, buf, IWL_AP_ID);
7819 }
7820 static DEVICE_ATTR(rs_window, S_IRUGO, show_rs_window, NULL);
7821
7822 static ssize_t show_tx_power(struct device *d,
7823 struct device_attribute *attr, char *buf)
7824 {
7825 struct iwl3945_priv *priv = (struct iwl3945_priv *)d->driver_data;
7826 return sprintf(buf, "%d\n", priv->user_txpower_limit);
7827 }
7828
7829 static ssize_t store_tx_power(struct device *d,
7830 struct device_attribute *attr,
7831 const char *buf, size_t count)
7832 {
7833 struct iwl3945_priv *priv = (struct iwl3945_priv *)d->driver_data;
7834 char *p = (char *)buf;
7835 u32 val;
7836
7837 val = simple_strtoul(p, &p, 10);
7838 if (p == buf)
7839 printk(KERN_INFO DRV_NAME
7840 ": %s is not in decimal form.\n", buf);
7841 else
7842 iwl3945_hw_reg_set_txpower(priv, val);
7843
7844 return count;
7845 }
7846
7847 static DEVICE_ATTR(tx_power, S_IWUSR | S_IRUGO, show_tx_power, store_tx_power);
7848
7849 static ssize_t show_flags(struct device *d,
7850 struct device_attribute *attr, char *buf)
7851 {
7852 struct iwl3945_priv *priv = (struct iwl3945_priv *)d->driver_data;
7853
7854 return sprintf(buf, "0x%04X\n", priv->active_rxon.flags);
7855 }
7856
7857 static ssize_t store_flags(struct device *d,
7858 struct device_attribute *attr,
7859 const char *buf, size_t count)
7860 {
7861 struct iwl3945_priv *priv = (struct iwl3945_priv *)d->driver_data;
7862 u32 flags = simple_strtoul(buf, NULL, 0);
7863
7864 mutex_lock(&priv->mutex);
7865 if (le32_to_cpu(priv->staging_rxon.flags) != flags) {
7866 /* Cancel any currently running scans... */
7867 if (iwl3945_scan_cancel_timeout(priv, 100))
7868 IWL_WARNING("Could not cancel scan.\n");
7869 else {
7870 IWL_DEBUG_INFO("Committing rxon.flags = 0x%04X\n",
7871 flags);
7872 priv->staging_rxon.flags = cpu_to_le32(flags);
7873 iwl3945_commit_rxon(priv);
7874 }
7875 }
7876 mutex_unlock(&priv->mutex);
7877
7878 return count;
7879 }
7880
7881 static DEVICE_ATTR(flags, S_IWUSR | S_IRUGO, show_flags, store_flags);
7882
7883 static ssize_t show_filter_flags(struct device *d,
7884 struct device_attribute *attr, char *buf)
7885 {
7886 struct iwl3945_priv *priv = (struct iwl3945_priv *)d->driver_data;
7887
7888 return sprintf(buf, "0x%04X\n",
7889 le32_to_cpu(priv->active_rxon.filter_flags));
7890 }
7891
7892 static ssize_t store_filter_flags(struct device *d,
7893 struct device_attribute *attr,
7894 const char *buf, size_t count)
7895 {
7896 struct iwl3945_priv *priv = (struct iwl3945_priv *)d->driver_data;
7897 u32 filter_flags = simple_strtoul(buf, NULL, 0);
7898
7899 mutex_lock(&priv->mutex);
7900 if (le32_to_cpu(priv->staging_rxon.filter_flags) != filter_flags) {
7901 /* Cancel any currently running scans... */
7902 if (iwl3945_scan_cancel_timeout(priv, 100))
7903 IWL_WARNING("Could not cancel scan.\n");
7904 else {
7905 IWL_DEBUG_INFO("Committing rxon.filter_flags = "
7906 "0x%04X\n", filter_flags);
7907 priv->staging_rxon.filter_flags =
7908 cpu_to_le32(filter_flags);
7909 iwl3945_commit_rxon(priv);
7910 }
7911 }
7912 mutex_unlock(&priv->mutex);
7913
7914 return count;
7915 }
7916
7917 static DEVICE_ATTR(filter_flags, S_IWUSR | S_IRUGO, show_filter_flags,
7918 store_filter_flags);
7919
7920 static ssize_t show_tune(struct device *d,
7921 struct device_attribute *attr, char *buf)
7922 {
7923 struct iwl3945_priv *priv = (struct iwl3945_priv *)d->driver_data;
7924
7925 return sprintf(buf, "0x%04X\n",
7926 (priv->phymode << 8) |
7927 le16_to_cpu(priv->active_rxon.channel));
7928 }
7929
7930 static void iwl3945_set_flags_for_phymode(struct iwl3945_priv *priv, u8 phymode);
7931
7932 static ssize_t store_tune(struct device *d,
7933 struct device_attribute *attr,
7934 const char *buf, size_t count)
7935 {
7936 struct iwl3945_priv *priv = (struct iwl3945_priv *)d->driver_data;
7937 char *p = (char *)buf;
7938 u16 tune = simple_strtoul(p, &p, 0);
7939 u8 phymode = (tune >> 8) & 0xff;
7940 u16 channel = tune & 0xff;
7941
7942 IWL_DEBUG_INFO("Tune request to:%d channel:%d\n", phymode, channel);
7943
7944 mutex_lock(&priv->mutex);
7945 if ((le16_to_cpu(priv->staging_rxon.channel) != channel) ||
7946 (priv->phymode != phymode)) {
7947 const struct iwl3945_channel_info *ch_info;
7948
7949 ch_info = iwl3945_get_channel_info(priv, phymode, channel);
7950 if (!ch_info) {
7951 IWL_WARNING("Requested invalid phymode/channel "
7952 "combination: %d %d\n", phymode, channel);
7953 mutex_unlock(&priv->mutex);
7954 return -EINVAL;
7955 }
7956
7957 /* Cancel any currently running scans... */
7958 if (iwl3945_scan_cancel_timeout(priv, 100))
7959 IWL_WARNING("Could not cancel scan.\n");
7960 else {
7961 IWL_DEBUG_INFO("Committing phymode and "
7962 "rxon.channel = %d %d\n",
7963 phymode, channel);
7964
7965 iwl3945_set_rxon_channel(priv, phymode, channel);
7966 iwl3945_set_flags_for_phymode(priv, phymode);
7967
7968 iwl3945_set_rate(priv);
7969 iwl3945_commit_rxon(priv);
7970 }
7971 }
7972 mutex_unlock(&priv->mutex);
7973
7974 return count;
7975 }
7976
7977 static DEVICE_ATTR(tune, S_IWUSR | S_IRUGO, show_tune, store_tune);
7978
7979 #ifdef CONFIG_IWL3945_SPECTRUM_MEASUREMENT
7980
7981 static ssize_t show_measurement(struct device *d,
7982 struct device_attribute *attr, char *buf)
7983 {
7984 struct iwl3945_priv *priv = dev_get_drvdata(d);
7985 struct iwl3945_spectrum_notification measure_report;
7986 u32 size = sizeof(measure_report), len = 0, ofs = 0;
7987 u8 *data = (u8 *) & measure_report;
7988 unsigned long flags;
7989
7990 spin_lock_irqsave(&priv->lock, flags);
7991 if (!(priv->measurement_status & MEASUREMENT_READY)) {
7992 spin_unlock_irqrestore(&priv->lock, flags);
7993 return 0;
7994 }
7995 memcpy(&measure_report, &priv->measure_report, size);
7996 priv->measurement_status = 0;
7997 spin_unlock_irqrestore(&priv->lock, flags);
7998
7999 while (size && (PAGE_SIZE - len)) {
8000 hex_dump_to_buffer(data + ofs, size, 16, 1, buf + len,
8001 PAGE_SIZE - len, 1);
8002 len = strlen(buf);
8003 if (PAGE_SIZE - len)
8004 buf[len++] = '\n';
8005
8006 ofs += 16;
8007 size -= min(size, 16U);
8008 }
8009
8010 return len;
8011 }
8012
8013 static ssize_t store_measurement(struct device *d,
8014 struct device_attribute *attr,
8015 const char *buf, size_t count)
8016 {
8017 struct iwl3945_priv *priv = dev_get_drvdata(d);
8018 struct ieee80211_measurement_params params = {
8019 .channel = le16_to_cpu(priv->active_rxon.channel),
8020 .start_time = cpu_to_le64(priv->last_tsf),
8021 .duration = cpu_to_le16(1),
8022 };
8023 u8 type = IWL_MEASURE_BASIC;
8024 u8 buffer[32];
8025 u8 channel;
8026
8027 if (count) {
8028 char *p = buffer;
8029 strncpy(buffer, buf, min(sizeof(buffer), count));
8030 channel = simple_strtoul(p, NULL, 0);
8031 if (channel)
8032 params.channel = channel;
8033
8034 p = buffer;
8035 while (*p && *p != ' ')
8036 p++;
8037 if (*p)
8038 type = simple_strtoul(p + 1, NULL, 0);
8039 }
8040
8041 IWL_DEBUG_INFO("Invoking measurement of type %d on "
8042 "channel %d (for '%s')\n", type, params.channel, buf);
8043 iwl3945_get_measurement(priv, &params, type);
8044
8045 return count;
8046 }
8047
8048 static DEVICE_ATTR(measurement, S_IRUSR | S_IWUSR,
8049 show_measurement, store_measurement);
8050 #endif /* CONFIG_IWL3945_SPECTRUM_MEASUREMENT */
8051
8052 static ssize_t show_rate(struct device *d,
8053 struct device_attribute *attr, char *buf)
8054 {
8055 struct iwl3945_priv *priv = dev_get_drvdata(d);
8056 unsigned long flags;
8057 int i;
8058
8059 spin_lock_irqsave(&priv->sta_lock, flags);
8060 if (priv->iw_mode == IEEE80211_IF_TYPE_STA)
8061 i = priv->stations[IWL_AP_ID].current_rate.s.rate;
8062 else
8063 i = priv->stations[IWL_STA_ID].current_rate.s.rate;
8064 spin_unlock_irqrestore(&priv->sta_lock, flags);
8065
8066 i = iwl3945_rate_index_from_plcp(i);
8067 if (i == -1)
8068 return sprintf(buf, "0\n");
8069
8070 return sprintf(buf, "%d%s\n",
8071 (iwl3945_rates[i].ieee >> 1),
8072 (iwl3945_rates[i].ieee & 0x1) ? ".5" : "");
8073 }
8074
8075 static DEVICE_ATTR(rate, S_IRUSR, show_rate, NULL);
8076
8077 static ssize_t store_retry_rate(struct device *d,
8078 struct device_attribute *attr,
8079 const char *buf, size_t count)
8080 {
8081 struct iwl3945_priv *priv = dev_get_drvdata(d);
8082
8083 priv->retry_rate = simple_strtoul(buf, NULL, 0);
8084 if (priv->retry_rate <= 0)
8085 priv->retry_rate = 1;
8086
8087 return count;
8088 }
8089
8090 static ssize_t show_retry_rate(struct device *d,
8091 struct device_attribute *attr, char *buf)
8092 {
8093 struct iwl3945_priv *priv = dev_get_drvdata(d);
8094 return sprintf(buf, "%d", priv->retry_rate);
8095 }
8096
8097 static DEVICE_ATTR(retry_rate, S_IWUSR | S_IRUSR, show_retry_rate,
8098 store_retry_rate);
8099
8100 static ssize_t store_power_level(struct device *d,
8101 struct device_attribute *attr,
8102 const char *buf, size_t count)
8103 {
8104 struct iwl3945_priv *priv = dev_get_drvdata(d);
8105 int rc;
8106 int mode;
8107
8108 mode = simple_strtoul(buf, NULL, 0);
8109 mutex_lock(&priv->mutex);
8110
8111 if (!iwl3945_is_ready(priv)) {
8112 rc = -EAGAIN;
8113 goto out;
8114 }
8115
8116 if ((mode < 1) || (mode > IWL_POWER_LIMIT) || (mode == IWL_POWER_AC))
8117 mode = IWL_POWER_AC;
8118 else
8119 mode |= IWL_POWER_ENABLED;
8120
8121 if (mode != priv->power_mode) {
8122 rc = iwl3945_send_power_mode(priv, IWL_POWER_LEVEL(mode));
8123 if (rc) {
8124 IWL_DEBUG_MAC80211("failed setting power mode.\n");
8125 goto out;
8126 }
8127 priv->power_mode = mode;
8128 }
8129
8130 rc = count;
8131
8132 out:
8133 mutex_unlock(&priv->mutex);
8134 return rc;
8135 }
8136
8137 #define MAX_WX_STRING 80
8138
8139 /* Values are in microsecond */
8140 static const s32 timeout_duration[] = {
8141 350000,
8142 250000,
8143 75000,
8144 37000,
8145 25000,
8146 };
8147 static const s32 period_duration[] = {
8148 400000,
8149 700000,
8150 1000000,
8151 1000000,
8152 1000000
8153 };
8154
8155 static ssize_t show_power_level(struct device *d,
8156 struct device_attribute *attr, char *buf)
8157 {
8158 struct iwl3945_priv *priv = dev_get_drvdata(d);
8159 int level = IWL_POWER_LEVEL(priv->power_mode);
8160 char *p = buf;
8161
8162 p += sprintf(p, "%d ", level);
8163 switch (level) {
8164 case IWL_POWER_MODE_CAM:
8165 case IWL_POWER_AC:
8166 p += sprintf(p, "(AC)");
8167 break;
8168 case IWL_POWER_BATTERY:
8169 p += sprintf(p, "(BATTERY)");
8170 break;
8171 default:
8172 p += sprintf(p,
8173 "(Timeout %dms, Period %dms)",
8174 timeout_duration[level - 1] / 1000,
8175 period_duration[level - 1] / 1000);
8176 }
8177
8178 if (!(priv->power_mode & IWL_POWER_ENABLED))
8179 p += sprintf(p, " OFF\n");
8180 else
8181 p += sprintf(p, " \n");
8182
8183 return (p - buf + 1);
8184
8185 }
8186
8187 static DEVICE_ATTR(power_level, S_IWUSR | S_IRUSR, show_power_level,
8188 store_power_level);
8189
8190 static ssize_t show_channels(struct device *d,
8191 struct device_attribute *attr, char *buf)
8192 {
8193 struct iwl3945_priv *priv = dev_get_drvdata(d);
8194 int len = 0, i;
8195 struct ieee80211_channel *channels = NULL;
8196 const struct ieee80211_hw_mode *hw_mode = NULL;
8197 int count = 0;
8198
8199 if (!iwl3945_is_ready(priv))
8200 return -EAGAIN;
8201
8202 hw_mode = iwl3945_get_hw_mode(priv, MODE_IEEE80211G);
8203 if (!hw_mode)
8204 hw_mode = iwl3945_get_hw_mode(priv, MODE_IEEE80211B);
8205 if (hw_mode) {
8206 channels = hw_mode->channels;
8207 count = hw_mode->num_channels;
8208 }
8209
8210 len +=
8211 sprintf(&buf[len],
8212 "Displaying %d channels in 2.4GHz band "
8213 "(802.11bg):\n", count);
8214
8215 for (i = 0; i < count; i++)
8216 len += sprintf(&buf[len], "%d: %ddBm: BSS%s%s, %s.\n",
8217 channels[i].chan,
8218 channels[i].power_level,
8219 channels[i].
8220 flag & IEEE80211_CHAN_W_RADAR_DETECT ?
8221 " (IEEE 802.11h required)" : "",
8222 (!(channels[i].flag & IEEE80211_CHAN_W_IBSS)
8223 || (channels[i].
8224 flag &
8225 IEEE80211_CHAN_W_RADAR_DETECT)) ? "" :
8226 ", IBSS",
8227 channels[i].
8228 flag & IEEE80211_CHAN_W_ACTIVE_SCAN ?
8229 "active/passive" : "passive only");
8230
8231 hw_mode = iwl3945_get_hw_mode(priv, MODE_IEEE80211A);
8232 if (hw_mode) {
8233 channels = hw_mode->channels;
8234 count = hw_mode->num_channels;
8235 } else {
8236 channels = NULL;
8237 count = 0;
8238 }
8239
8240 len += sprintf(&buf[len], "Displaying %d channels in 5.2GHz band "
8241 "(802.11a):\n", count);
8242
8243 for (i = 0; i < count; i++)
8244 len += sprintf(&buf[len], "%d: %ddBm: BSS%s%s, %s.\n",
8245 channels[i].chan,
8246 channels[i].power_level,
8247 channels[i].
8248 flag & IEEE80211_CHAN_W_RADAR_DETECT ?
8249 " (IEEE 802.11h required)" : "",
8250 (!(channels[i].flag & IEEE80211_CHAN_W_IBSS)
8251 || (channels[i].
8252 flag &
8253 IEEE80211_CHAN_W_RADAR_DETECT)) ? "" :
8254 ", IBSS",
8255 channels[i].
8256 flag & IEEE80211_CHAN_W_ACTIVE_SCAN ?
8257 "active/passive" : "passive only");
8258
8259 return len;
8260 }
8261
8262 static DEVICE_ATTR(channels, S_IRUSR, show_channels, NULL);
8263
8264 static ssize_t show_statistics(struct device *d,
8265 struct device_attribute *attr, char *buf)
8266 {
8267 struct iwl3945_priv *priv = dev_get_drvdata(d);
8268 u32 size = sizeof(struct iwl3945_notif_statistics);
8269 u32 len = 0, ofs = 0;
8270 u8 *data = (u8 *) & priv->statistics;
8271 int rc = 0;
8272
8273 if (!iwl3945_is_alive(priv))
8274 return -EAGAIN;
8275
8276 mutex_lock(&priv->mutex);
8277 rc = iwl3945_send_statistics_request(priv);
8278 mutex_unlock(&priv->mutex);
8279
8280 if (rc) {
8281 len = sprintf(buf,
8282 "Error sending statistics request: 0x%08X\n", rc);
8283 return len;
8284 }
8285
8286 while (size && (PAGE_SIZE - len)) {
8287 hex_dump_to_buffer(data + ofs, size, 16, 1, buf + len,
8288 PAGE_SIZE - len, 1);
8289 len = strlen(buf);
8290 if (PAGE_SIZE - len)
8291 buf[len++] = '\n';
8292
8293 ofs += 16;
8294 size -= min(size, 16U);
8295 }
8296
8297 return len;
8298 }
8299
8300 static DEVICE_ATTR(statistics, S_IRUGO, show_statistics, NULL);
8301
8302 static ssize_t show_antenna(struct device *d,
8303 struct device_attribute *attr, char *buf)
8304 {
8305 struct iwl3945_priv *priv = dev_get_drvdata(d);
8306
8307 if (!iwl3945_is_alive(priv))
8308 return -EAGAIN;
8309
8310 return sprintf(buf, "%d\n", priv->antenna);
8311 }
8312
8313 static ssize_t store_antenna(struct device *d,
8314 struct device_attribute *attr,
8315 const char *buf, size_t count)
8316 {
8317 int ant;
8318 struct iwl3945_priv *priv = dev_get_drvdata(d);
8319
8320 if (count == 0)
8321 return 0;
8322
8323 if (sscanf(buf, "%1i", &ant) != 1) {
8324 IWL_DEBUG_INFO("not in hex or decimal form.\n");
8325 return count;
8326 }
8327
8328 if ((ant >= 0) && (ant <= 2)) {
8329 IWL_DEBUG_INFO("Setting antenna select to %d.\n", ant);
8330 priv->antenna = (enum iwl3945_antenna)ant;
8331 } else
8332 IWL_DEBUG_INFO("Bad antenna select value %d.\n", ant);
8333
8334
8335 return count;
8336 }
8337
8338 static DEVICE_ATTR(antenna, S_IWUSR | S_IRUGO, show_antenna, store_antenna);
8339
8340 static ssize_t show_status(struct device *d,
8341 struct device_attribute *attr, char *buf)
8342 {
8343 struct iwl3945_priv *priv = (struct iwl3945_priv *)d->driver_data;
8344 if (!iwl3945_is_alive(priv))
8345 return -EAGAIN;
8346 return sprintf(buf, "0x%08x\n", (int)priv->status);
8347 }
8348
8349 static DEVICE_ATTR(status, S_IRUGO, show_status, NULL);
8350
8351 static ssize_t dump_error_log(struct device *d,
8352 struct device_attribute *attr,
8353 const char *buf, size_t count)
8354 {
8355 char *p = (char *)buf;
8356
8357 if (p[0] == '1')
8358 iwl3945_dump_nic_error_log((struct iwl3945_priv *)d->driver_data);
8359
8360 return strnlen(buf, count);
8361 }
8362
8363 static DEVICE_ATTR(dump_errors, S_IWUSR, NULL, dump_error_log);
8364
8365 static ssize_t dump_event_log(struct device *d,
8366 struct device_attribute *attr,
8367 const char *buf, size_t count)
8368 {
8369 char *p = (char *)buf;
8370
8371 if (p[0] == '1')
8372 iwl3945_dump_nic_event_log((struct iwl3945_priv *)d->driver_data);
8373
8374 return strnlen(buf, count);
8375 }
8376
8377 static DEVICE_ATTR(dump_events, S_IWUSR, NULL, dump_event_log);
8378
8379 /*****************************************************************************
8380 *
8381 * driver setup and teardown
8382 *
8383 *****************************************************************************/
8384
8385 static void iwl3945_setup_deferred_work(struct iwl3945_priv *priv)
8386 {
8387 priv->workqueue = create_workqueue(DRV_NAME);
8388
8389 init_waitqueue_head(&priv->wait_command_queue);
8390
8391 INIT_WORK(&priv->up, iwl3945_bg_up);
8392 INIT_WORK(&priv->restart, iwl3945_bg_restart);
8393 INIT_WORK(&priv->rx_replenish, iwl3945_bg_rx_replenish);
8394 INIT_WORK(&priv->scan_completed, iwl3945_bg_scan_completed);
8395 INIT_WORK(&priv->request_scan, iwl3945_bg_request_scan);
8396 INIT_WORK(&priv->abort_scan, iwl3945_bg_abort_scan);
8397 INIT_WORK(&priv->rf_kill, iwl3945_bg_rf_kill);
8398 INIT_WORK(&priv->beacon_update, iwl3945_bg_beacon_update);
8399 INIT_DELAYED_WORK(&priv->post_associate, iwl3945_bg_post_associate);
8400 INIT_DELAYED_WORK(&priv->init_alive_start, iwl3945_bg_init_alive_start);
8401 INIT_DELAYED_WORK(&priv->alive_start, iwl3945_bg_alive_start);
8402 INIT_DELAYED_WORK(&priv->scan_check, iwl3945_bg_scan_check);
8403
8404 iwl3945_hw_setup_deferred_work(priv);
8405
8406 tasklet_init(&priv->irq_tasklet, (void (*)(unsigned long))
8407 iwl3945_irq_tasklet, (unsigned long)priv);
8408 }
8409
8410 static void iwl3945_cancel_deferred_work(struct iwl3945_priv *priv)
8411 {
8412 iwl3945_hw_cancel_deferred_work(priv);
8413
8414 cancel_delayed_work_sync(&priv->init_alive_start);
8415 cancel_delayed_work(&priv->scan_check);
8416 cancel_delayed_work(&priv->alive_start);
8417 cancel_delayed_work(&priv->post_associate);
8418 cancel_work_sync(&priv->beacon_update);
8419 }
8420
8421 static struct attribute *iwl3945_sysfs_entries[] = {
8422 &dev_attr_antenna.attr,
8423 &dev_attr_channels.attr,
8424 &dev_attr_dump_errors.attr,
8425 &dev_attr_dump_events.attr,
8426 &dev_attr_flags.attr,
8427 &dev_attr_filter_flags.attr,
8428 #ifdef CONFIG_IWL3945_SPECTRUM_MEASUREMENT
8429 &dev_attr_measurement.attr,
8430 #endif
8431 &dev_attr_power_level.attr,
8432 &dev_attr_rate.attr,
8433 &dev_attr_retry_rate.attr,
8434 &dev_attr_rf_kill.attr,
8435 &dev_attr_rs_window.attr,
8436 &dev_attr_statistics.attr,
8437 &dev_attr_status.attr,
8438 &dev_attr_temperature.attr,
8439 &dev_attr_tune.attr,
8440 &dev_attr_tx_power.attr,
8441
8442 NULL
8443 };
8444
8445 static struct attribute_group iwl3945_attribute_group = {
8446 .name = NULL, /* put in device directory */
8447 .attrs = iwl3945_sysfs_entries,
8448 };
8449
8450 static struct ieee80211_ops iwl3945_hw_ops = {
8451 .tx = iwl3945_mac_tx,
8452 .start = iwl3945_mac_start,
8453 .stop = iwl3945_mac_stop,
8454 .add_interface = iwl3945_mac_add_interface,
8455 .remove_interface = iwl3945_mac_remove_interface,
8456 .config = iwl3945_mac_config,
8457 .config_interface = iwl3945_mac_config_interface,
8458 .configure_filter = iwl3945_configure_filter,
8459 .set_key = iwl3945_mac_set_key,
8460 .get_stats = iwl3945_mac_get_stats,
8461 .get_tx_stats = iwl3945_mac_get_tx_stats,
8462 .conf_tx = iwl3945_mac_conf_tx,
8463 .get_tsf = iwl3945_mac_get_tsf,
8464 .reset_tsf = iwl3945_mac_reset_tsf,
8465 .beacon_update = iwl3945_mac_beacon_update,
8466 .hw_scan = iwl3945_mac_hw_scan
8467 };
8468
8469 static int iwl3945_pci_probe(struct pci_dev *pdev, const struct pci_device_id *ent)
8470 {
8471 int err = 0;
8472 u32 pci_id;
8473 struct iwl3945_priv *priv;
8474 struct ieee80211_hw *hw;
8475 int i;
8476
8477 /* Disabling hardware scan means that mac80211 will perform scans
8478 * "the hard way", rather than using device's scan. */
8479 if (iwl3945_param_disable_hw_scan) {
8480 IWL_DEBUG_INFO("Disabling hw_scan\n");
8481 iwl3945_hw_ops.hw_scan = NULL;
8482 }
8483
8484 if ((iwl3945_param_queues_num > IWL_MAX_NUM_QUEUES) ||
8485 (iwl3945_param_queues_num < IWL_MIN_NUM_QUEUES)) {
8486 IWL_ERROR("invalid queues_num, should be between %d and %d\n",
8487 IWL_MIN_NUM_QUEUES, IWL_MAX_NUM_QUEUES);
8488 err = -EINVAL;
8489 goto out;
8490 }
8491
8492 /* mac80211 allocates memory for this device instance, including
8493 * space for this driver's private structure */
8494 hw = ieee80211_alloc_hw(sizeof(struct iwl3945_priv), &iwl3945_hw_ops);
8495 if (hw == NULL) {
8496 IWL_ERROR("Can not allocate network device\n");
8497 err = -ENOMEM;
8498 goto out;
8499 }
8500 SET_IEEE80211_DEV(hw, &pdev->dev);
8501
8502 hw->rate_control_algorithm = "iwl-3945-rs";
8503
8504 IWL_DEBUG_INFO("*** LOAD DRIVER ***\n");
8505 priv = hw->priv;
8506 priv->hw = hw;
8507
8508 priv->pci_dev = pdev;
8509
8510 /* Select antenna (may be helpful if only one antenna is connected) */
8511 priv->antenna = (enum iwl3945_antenna)iwl3945_param_antenna;
8512 #ifdef CONFIG_IWL3945_DEBUG
8513 iwl3945_debug_level = iwl3945_param_debug;
8514 atomic_set(&priv->restrict_refcnt, 0);
8515 #endif
8516 priv->retry_rate = 1;
8517
8518 priv->ibss_beacon = NULL;
8519
8520 /* Tell mac80211 and its clients (e.g. Wireless Extensions)
8521 * the range of signal quality values that we'll provide.
8522 * Negative values for level/noise indicate that we'll provide dBm.
8523 * For WE, at least, non-0 values here *enable* display of values
8524 * in app (iwconfig). */
8525 hw->max_rssi = -20; /* signal level, negative indicates dBm */
8526 hw->max_noise = -20; /* noise level, negative indicates dBm */
8527 hw->max_signal = 100; /* link quality indication (%) */
8528
8529 /* Tell mac80211 our Tx characteristics */
8530 hw->flags = IEEE80211_HW_HOST_GEN_BEACON_TEMPLATE;
8531
8532 /* 4 EDCA QOS priorities */
8533 hw->queues = 4;
8534
8535 spin_lock_init(&priv->lock);
8536 spin_lock_init(&priv->power_data.lock);
8537 spin_lock_init(&priv->sta_lock);
8538 spin_lock_init(&priv->hcmd_lock);
8539
8540 for (i = 0; i < IWL_IBSS_MAC_HASH_SIZE; i++)
8541 INIT_LIST_HEAD(&priv->ibss_mac_hash[i]);
8542
8543 INIT_LIST_HEAD(&priv->free_frames);
8544
8545 mutex_init(&priv->mutex);
8546 if (pci_enable_device(pdev)) {
8547 err = -ENODEV;
8548 goto out_ieee80211_free_hw;
8549 }
8550
8551 pci_set_master(pdev);
8552
8553 /* Clear the driver's (not device's) station table */
8554 iwl3945_clear_stations_table(priv);
8555
8556 priv->data_retry_limit = -1;
8557 priv->ieee_channels = NULL;
8558 priv->ieee_rates = NULL;
8559 priv->phymode = -1;
8560
8561 err = pci_set_dma_mask(pdev, DMA_32BIT_MASK);
8562 if (!err)
8563 err = pci_set_consistent_dma_mask(pdev, DMA_32BIT_MASK);
8564 if (err) {
8565 printk(KERN_WARNING DRV_NAME ": No suitable DMA available.\n");
8566 goto out_pci_disable_device;
8567 }
8568
8569 pci_set_drvdata(pdev, priv);
8570 err = pci_request_regions(pdev, DRV_NAME);
8571 if (err)
8572 goto out_pci_disable_device;
8573
8574 /* We disable the RETRY_TIMEOUT register (0x41) to keep
8575 * PCI Tx retries from interfering with C3 CPU state */
8576 pci_write_config_byte(pdev, 0x41, 0x00);
8577
8578 priv->hw_base = pci_iomap(pdev, 0, 0);
8579 if (!priv->hw_base) {
8580 err = -ENODEV;
8581 goto out_pci_release_regions;
8582 }
8583
8584 IWL_DEBUG_INFO("pci_resource_len = 0x%08llx\n",
8585 (unsigned long long) pci_resource_len(pdev, 0));
8586 IWL_DEBUG_INFO("pci_resource_base = %p\n", priv->hw_base);
8587
8588 /* Initialize module parameter values here */
8589
8590 /* Disable radio (SW RF KILL) via parameter when loading driver */
8591 if (iwl3945_param_disable) {
8592 set_bit(STATUS_RF_KILL_SW, &priv->status);
8593 IWL_DEBUG_INFO("Radio disabled.\n");
8594 }
8595
8596 priv->iw_mode = IEEE80211_IF_TYPE_STA;
8597
8598 pci_id =
8599 (priv->pci_dev->device << 16) | priv->pci_dev->subsystem_device;
8600
8601 switch (pci_id) {
8602 case 0x42221005: /* 0x4222 0x8086 0x1005 is BG SKU */
8603 case 0x42221034: /* 0x4222 0x8086 0x1034 is BG SKU */
8604 case 0x42271014: /* 0x4227 0x8086 0x1014 is BG SKU */
8605 case 0x42221044: /* 0x4222 0x8086 0x1044 is BG SKU */
8606 priv->is_abg = 0;
8607 break;
8608
8609 /*
8610 * Rest are assumed ABG SKU -- if this is not the
8611 * case then the card will get the wrong 'Detected'
8612 * line in the kernel log however the code that
8613 * initializes the GEO table will detect no A-band
8614 * channels and remove the is_abg mask.
8615 */
8616 default:
8617 priv->is_abg = 1;
8618 break;
8619 }
8620
8621 printk(KERN_INFO DRV_NAME
8622 ": Detected Intel PRO/Wireless 3945%sBG Network Connection\n",
8623 priv->is_abg ? "A" : "");
8624
8625 /* Device-specific setup */
8626 if (iwl3945_hw_set_hw_setting(priv)) {
8627 IWL_ERROR("failed to set hw settings\n");
8628 mutex_unlock(&priv->mutex);
8629 goto out_iounmap;
8630 }
8631
8632 #ifdef CONFIG_IWL3945_QOS
8633 if (iwl3945_param_qos_enable)
8634 priv->qos_data.qos_enable = 1;
8635
8636 iwl3945_reset_qos(priv);
8637
8638 priv->qos_data.qos_active = 0;
8639 priv->qos_data.qos_cap.val = 0;
8640 #endif /* CONFIG_IWL3945_QOS */
8641
8642 iwl3945_set_rxon_channel(priv, MODE_IEEE80211G, 6);
8643 iwl3945_setup_deferred_work(priv);
8644 iwl3945_setup_rx_handlers(priv);
8645
8646 priv->rates_mask = IWL_RATES_MASK;
8647 /* If power management is turned on, default to AC mode */
8648 priv->power_mode = IWL_POWER_AC;
8649 priv->user_txpower_limit = IWL_DEFAULT_TX_POWER;
8650
8651 iwl3945_disable_interrupts(priv);
8652
8653 pci_enable_msi(pdev);
8654
8655 err = request_irq(pdev->irq, iwl3945_isr, IRQF_SHARED, DRV_NAME, priv);
8656 if (err) {
8657 IWL_ERROR("Error allocating IRQ %d\n", pdev->irq);
8658 goto out_disable_msi;
8659 }
8660
8661 mutex_lock(&priv->mutex);
8662
8663 err = sysfs_create_group(&pdev->dev.kobj, &iwl3945_attribute_group);
8664 if (err) {
8665 IWL_ERROR("failed to create sysfs device attributes\n");
8666 mutex_unlock(&priv->mutex);
8667 goto out_release_irq;
8668 }
8669
8670 /* fetch ucode file from disk, alloc and copy to bus-master buffers ...
8671 * ucode filename and max sizes are card-specific. */
8672 err = iwl3945_read_ucode(priv);
8673 if (err) {
8674 IWL_ERROR("Could not read microcode: %d\n", err);
8675 mutex_unlock(&priv->mutex);
8676 goto out_pci_alloc;
8677 }
8678
8679 mutex_unlock(&priv->mutex);
8680
8681 IWL_DEBUG_INFO("Queueing UP work.\n");
8682
8683 queue_work(priv->workqueue, &priv->up);
8684
8685 return 0;
8686
8687 out_pci_alloc:
8688 iwl3945_dealloc_ucode_pci(priv);
8689
8690 sysfs_remove_group(&pdev->dev.kobj, &iwl3945_attribute_group);
8691
8692 out_release_irq:
8693 free_irq(pdev->irq, priv);
8694
8695 out_disable_msi:
8696 pci_disable_msi(pdev);
8697 destroy_workqueue(priv->workqueue);
8698 priv->workqueue = NULL;
8699 iwl3945_unset_hw_setting(priv);
8700
8701 out_iounmap:
8702 pci_iounmap(pdev, priv->hw_base);
8703 out_pci_release_regions:
8704 pci_release_regions(pdev);
8705 out_pci_disable_device:
8706 pci_disable_device(pdev);
8707 pci_set_drvdata(pdev, NULL);
8708 out_ieee80211_free_hw:
8709 ieee80211_free_hw(priv->hw);
8710 out:
8711 return err;
8712 }
8713
8714 static void iwl3945_pci_remove(struct pci_dev *pdev)
8715 {
8716 struct iwl3945_priv *priv = pci_get_drvdata(pdev);
8717 struct list_head *p, *q;
8718 int i;
8719
8720 if (!priv)
8721 return;
8722
8723 IWL_DEBUG_INFO("*** UNLOAD DRIVER ***\n");
8724
8725 set_bit(STATUS_EXIT_PENDING, &priv->status);
8726
8727 iwl3945_down(priv);
8728
8729 /* Free MAC hash list for ADHOC */
8730 for (i = 0; i < IWL_IBSS_MAC_HASH_SIZE; i++) {
8731 list_for_each_safe(p, q, &priv->ibss_mac_hash[i]) {
8732 list_del(p);
8733 kfree(list_entry(p, struct iwl3945_ibss_seq, list));
8734 }
8735 }
8736
8737 sysfs_remove_group(&pdev->dev.kobj, &iwl3945_attribute_group);
8738
8739 iwl3945_dealloc_ucode_pci(priv);
8740
8741 if (priv->rxq.bd)
8742 iwl3945_rx_queue_free(priv, &priv->rxq);
8743 iwl3945_hw_txq_ctx_free(priv);
8744
8745 iwl3945_unset_hw_setting(priv);
8746 iwl3945_clear_stations_table(priv);
8747
8748 if (priv->mac80211_registered) {
8749 ieee80211_unregister_hw(priv->hw);
8750 iwl3945_rate_control_unregister(priv->hw);
8751 }
8752
8753 /*netif_stop_queue(dev); */
8754 flush_workqueue(priv->workqueue);
8755
8756 /* ieee80211_unregister_hw calls iwl3945_mac_stop, which flushes
8757 * priv->workqueue... so we can't take down the workqueue
8758 * until now... */
8759 destroy_workqueue(priv->workqueue);
8760 priv->workqueue = NULL;
8761
8762 free_irq(pdev->irq, priv);
8763 pci_disable_msi(pdev);
8764 pci_iounmap(pdev, priv->hw_base);
8765 pci_release_regions(pdev);
8766 pci_disable_device(pdev);
8767 pci_set_drvdata(pdev, NULL);
8768
8769 kfree(priv->channel_info);
8770
8771 kfree(priv->ieee_channels);
8772 kfree(priv->ieee_rates);
8773
8774 if (priv->ibss_beacon)
8775 dev_kfree_skb(priv->ibss_beacon);
8776
8777 ieee80211_free_hw(priv->hw);
8778 }
8779
8780 #ifdef CONFIG_PM
8781
8782 static int iwl3945_pci_suspend(struct pci_dev *pdev, pm_message_t state)
8783 {
8784 struct iwl3945_priv *priv = pci_get_drvdata(pdev);
8785
8786 set_bit(STATUS_IN_SUSPEND, &priv->status);
8787
8788 /* Take down the device; powers it off, etc. */
8789 iwl3945_down(priv);
8790
8791 if (priv->mac80211_registered)
8792 ieee80211_stop_queues(priv->hw);
8793
8794 pci_save_state(pdev);
8795 pci_disable_device(pdev);
8796 pci_set_power_state(pdev, PCI_D3hot);
8797
8798 return 0;
8799 }
8800
8801 static void iwl3945_resume(struct iwl3945_priv *priv)
8802 {
8803 unsigned long flags;
8804
8805 /* The following it a temporary work around due to the
8806 * suspend / resume not fully initializing the NIC correctly.
8807 * Without all of the following, resume will not attempt to take
8808 * down the NIC (it shouldn't really need to) and will just try
8809 * and bring the NIC back up. However that fails during the
8810 * ucode verification process. This then causes iwl3945_down to be
8811 * called *after* iwl3945_hw_nic_init() has succeeded -- which
8812 * then lets the next init sequence succeed. So, we've
8813 * replicated all of that NIC init code here... */
8814
8815 iwl3945_write32(priv, CSR_INT, 0xFFFFFFFF);
8816
8817 iwl3945_hw_nic_init(priv);
8818
8819 iwl3945_write32(priv, CSR_UCODE_DRV_GP1_CLR, CSR_UCODE_SW_BIT_RFKILL);
8820 iwl3945_write32(priv, CSR_UCODE_DRV_GP1_CLR,
8821 CSR_UCODE_DRV_GP1_BIT_CMD_BLOCKED);
8822 iwl3945_write32(priv, CSR_INT, 0xFFFFFFFF);
8823 iwl3945_write32(priv, CSR_UCODE_DRV_GP1_CLR, CSR_UCODE_SW_BIT_RFKILL);
8824 iwl3945_write32(priv, CSR_UCODE_DRV_GP1_CLR, CSR_UCODE_SW_BIT_RFKILL);
8825
8826 /* tell the device to stop sending interrupts */
8827 iwl3945_disable_interrupts(priv);
8828
8829 spin_lock_irqsave(&priv->lock, flags);
8830 iwl3945_clear_bit(priv, CSR_GP_CNTRL, CSR_GP_CNTRL_REG_FLAG_MAC_ACCESS_REQ);
8831
8832 if (!iwl3945_grab_nic_access(priv)) {
8833 iwl3945_write_prph(priv, APMG_CLK_DIS_REG,
8834 APMG_CLK_VAL_DMA_CLK_RQT);
8835 iwl3945_release_nic_access(priv);
8836 }
8837 spin_unlock_irqrestore(&priv->lock, flags);
8838
8839 udelay(5);
8840
8841 iwl3945_hw_nic_reset(priv);
8842
8843 /* Bring the device back up */
8844 clear_bit(STATUS_IN_SUSPEND, &priv->status);
8845 queue_work(priv->workqueue, &priv->up);
8846 }
8847
8848 static int iwl3945_pci_resume(struct pci_dev *pdev)
8849 {
8850 struct iwl3945_priv *priv = pci_get_drvdata(pdev);
8851 int err;
8852
8853 printk(KERN_INFO "Coming out of suspend...\n");
8854
8855 pci_set_power_state(pdev, PCI_D0);
8856 err = pci_enable_device(pdev);
8857 pci_restore_state(pdev);
8858
8859 /*
8860 * Suspend/Resume resets the PCI configuration space, so we have to
8861 * re-disable the RETRY_TIMEOUT register (0x41) to keep PCI Tx retries
8862 * from interfering with C3 CPU state. pci_restore_state won't help
8863 * here since it only restores the first 64 bytes pci config header.
8864 */
8865 pci_write_config_byte(pdev, 0x41, 0x00);
8866
8867 iwl3945_resume(priv);
8868
8869 return 0;
8870 }
8871
8872 #endif /* CONFIG_PM */
8873
8874 /*****************************************************************************
8875 *
8876 * driver and module entry point
8877 *
8878 *****************************************************************************/
8879
8880 static struct pci_driver iwl3945_driver = {
8881 .name = DRV_NAME,
8882 .id_table = iwl3945_hw_card_ids,
8883 .probe = iwl3945_pci_probe,
8884 .remove = __devexit_p(iwl3945_pci_remove),
8885 #ifdef CONFIG_PM
8886 .suspend = iwl3945_pci_suspend,
8887 .resume = iwl3945_pci_resume,
8888 #endif
8889 };
8890
8891 static int __init iwl3945_init(void)
8892 {
8893
8894 int ret;
8895 printk(KERN_INFO DRV_NAME ": " DRV_DESCRIPTION ", " DRV_VERSION "\n");
8896 printk(KERN_INFO DRV_NAME ": " DRV_COPYRIGHT "\n");
8897 ret = pci_register_driver(&iwl3945_driver);
8898 if (ret) {
8899 IWL_ERROR("Unable to initialize PCI module\n");
8900 return ret;
8901 }
8902 #ifdef CONFIG_IWL3945_DEBUG
8903 ret = driver_create_file(&iwl3945_driver.driver, &driver_attr_debug_level);
8904 if (ret) {
8905 IWL_ERROR("Unable to create driver sysfs file\n");
8906 pci_unregister_driver(&iwl3945_driver);
8907 return ret;
8908 }
8909 #endif
8910
8911 return ret;
8912 }
8913
8914 static void __exit iwl3945_exit(void)
8915 {
8916 #ifdef CONFIG_IWL3945_DEBUG
8917 driver_remove_file(&iwl3945_driver.driver, &driver_attr_debug_level);
8918 #endif
8919 pci_unregister_driver(&iwl3945_driver);
8920 }
8921
8922 module_param_named(antenna, iwl3945_param_antenna, int, 0444);
8923 MODULE_PARM_DESC(antenna, "select antenna (1=Main, 2=Aux, default 0 [both])");
8924 module_param_named(disable, iwl3945_param_disable, int, 0444);
8925 MODULE_PARM_DESC(disable, "manually disable the radio (default 0 [radio on])");
8926 module_param_named(hwcrypto, iwl3945_param_hwcrypto, int, 0444);
8927 MODULE_PARM_DESC(hwcrypto,
8928 "using hardware crypto engine (default 0 [software])\n");
8929 module_param_named(debug, iwl3945_param_debug, int, 0444);
8930 MODULE_PARM_DESC(debug, "debug output mask");
8931 module_param_named(disable_hw_scan, iwl3945_param_disable_hw_scan, int, 0444);
8932 MODULE_PARM_DESC(disable_hw_scan, "disable hardware scanning (default 0)");
8933
8934 module_param_named(queues_num, iwl3945_param_queues_num, int, 0444);
8935 MODULE_PARM_DESC(queues_num, "number of hw queues.");
8936
8937 /* QoS */
8938 module_param_named(qos_enable, iwl3945_param_qos_enable, int, 0444);
8939 MODULE_PARM_DESC(qos_enable, "enable all QoS functionality");
8940
8941 module_exit(iwl3945_exit);
8942 module_init(iwl3945_init);
WRT350N Kernel Patches