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Merge branch 'master' of master.kernel.org:/pub/scm/linux/kernel/git/davem/net-2.6
[linux-2.6/libata-dev.git] / drivers / net / wireless / iwlwifi / iwl3945-base.c
blob5c10b87d0336d4574e43d906d5f29fbb1aee065a
1 /******************************************************************************
2 *
3 * Copyright(c) 2003 - 2009 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 * Intel Linux Wireless <ilw@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/init.h>
33 #include <linux/pci.h>
34 #include <linux/dma-mapping.h>
35 #include <linux/delay.h>
36 #include <linux/skbuff.h>
37 #include <linux/netdevice.h>
38 #include <linux/wireless.h>
39 #include <linux/firmware.h>
40 #include <linux/etherdevice.h>
41 #include <linux/if_arp.h>
42
43 #include <net/ieee80211_radiotap.h>
44 #include <net/lib80211.h>
45 #include <net/mac80211.h>
46
47 #include <asm/div64.h>
48
49 #define DRV_NAME "iwl3945"
50
51 #include "iwl-fh.h"
52 #include "iwl-3945-fh.h"
53 #include "iwl-commands.h"
54 #include "iwl-sta.h"
55 #include "iwl-3945.h"
56 #include "iwl-helpers.h"
57 #include "iwl-core.h"
58 #include "iwl-dev.h"
59
60 /*
61 * module name, copyright, version, etc.
62 */
63
64 #define DRV_DESCRIPTION \
65 "Intel(R) PRO/Wireless 3945ABG/BG Network Connection driver for Linux"
66
67 #ifdef CONFIG_IWLWIFI_DEBUG
68 #define VD "d"
69 #else
70 #define VD
71 #endif
72
73 #ifdef CONFIG_IWL3945_SPECTRUM_MEASUREMENT
74 #define VS "s"
75 #else
76 #define VS
77 #endif
78
79 #define IWL39_VERSION "1.2.26k" VD VS
80 #define DRV_COPYRIGHT "Copyright(c) 2003-2009 Intel Corporation"
81 #define DRV_AUTHOR "<ilw@linux.intel.com>"
82 #define DRV_VERSION IWL39_VERSION
83
84
85 MODULE_DESCRIPTION(DRV_DESCRIPTION);
86 MODULE_VERSION(DRV_VERSION);
87 MODULE_AUTHOR(DRV_COPYRIGHT " " DRV_AUTHOR);
88 MODULE_LICENSE("GPL");
89
90 /* module parameters */
91 struct iwl_mod_params iwl3945_mod_params = {
92 .num_of_queues = IWL39_MAX_NUM_QUEUES,
93 .sw_crypto = 1,
94 .restart_fw = 1,
95 /* the rest are 0 by default */
96 };
97
98 /*************** STATION TABLE MANAGEMENT ****
99 * mac80211 should be examined to determine if sta_info is duplicating
100 * the functionality provided here
101 */
102
103 /**************************************************************/
104 #if 0 /* temporary disable till we add real remove station */
105 /**
106 * iwl3945_remove_station - Remove driver's knowledge of station.
107 *
108 * NOTE: This does not remove station from device's station table.
109 */
110 static u8 iwl3945_remove_station(struct iwl_priv *priv, const u8 *addr, int is_ap)
111 {
112 int index = IWL_INVALID_STATION;
113 int i;
114 unsigned long flags;
115
116 spin_lock_irqsave(&priv->sta_lock, flags);
117
118 if (is_ap)
119 index = IWL_AP_ID;
120 else if (is_broadcast_ether_addr(addr))
121 index = priv->hw_params.bcast_sta_id;
122 else
123 for (i = IWL_STA_ID; i < priv->hw_params.max_stations; i++)
124 if (priv->stations_39[i].used &&
125 !compare_ether_addr(priv->stations_39[i].sta.sta.addr,
126 addr)) {
127 index = i;
128 break;
129 }
130
131 if (unlikely(index == IWL_INVALID_STATION))
132 goto out;
133
134 if (priv->stations_39[index].used) {
135 priv->stations_39[index].used = 0;
136 priv->num_stations--;
137 }
138
139 BUG_ON(priv->num_stations < 0);
140
141 out:
142 spin_unlock_irqrestore(&priv->sta_lock, flags);
143 return 0;
144 }
145 #endif
146
147 /**
148 * iwl3945_clear_stations_table - Clear the driver's station table
149 *
150 * NOTE: This does not clear or otherwise alter the device's station table.
151 */
152 void iwl3945_clear_stations_table(struct iwl_priv *priv)
153 {
154 unsigned long flags;
155
156 spin_lock_irqsave(&priv->sta_lock, flags);
157
158 priv->num_stations = 0;
159 memset(priv->stations_39, 0, sizeof(priv->stations_39));
160
161 spin_unlock_irqrestore(&priv->sta_lock, flags);
162 }
163
164 /**
165 * iwl3945_add_station - Add station to station tables in driver and device
166 */
167 u8 iwl3945_add_station(struct iwl_priv *priv, const u8 *addr, int is_ap, u8 flags, struct ieee80211_sta_ht_cap *ht_info)
168 {
169 int i;
170 int index = IWL_INVALID_STATION;
171 struct iwl3945_station_entry *station;
172 unsigned long flags_spin;
173 u8 rate;
174
175 spin_lock_irqsave(&priv->sta_lock, flags_spin);
176 if (is_ap)
177 index = IWL_AP_ID;
178 else if (is_broadcast_ether_addr(addr))
179 index = priv->hw_params.bcast_sta_id;
180 else
181 for (i = IWL_STA_ID; i < priv->hw_params.max_stations; i++) {
182 if (!compare_ether_addr(priv->stations_39[i].sta.sta.addr,
183 addr)) {
184 index = i;
185 break;
186 }
187
188 if (!priv->stations_39[i].used &&
189 index == IWL_INVALID_STATION)
190 index = i;
191 }
192
193 /* These two conditions has the same outcome but keep them separate
194 since they have different meaning */
195 if (unlikely(index == IWL_INVALID_STATION)) {
196 spin_unlock_irqrestore(&priv->sta_lock, flags_spin);
197 return index;
198 }
199
200 if (priv->stations_39[index].used &&
201 !compare_ether_addr(priv->stations_39[index].sta.sta.addr, addr)) {
202 spin_unlock_irqrestore(&priv->sta_lock, flags_spin);
203 return index;
204 }
205
206 IWL_DEBUG_ASSOC(priv, "Add STA ID %d: %pM\n", index, addr);
207 station = &priv->stations_39[index];
208 station->used = 1;
209 priv->num_stations++;
210
211 /* Set up the REPLY_ADD_STA command to send to device */
212 memset(&station->sta, 0, sizeof(struct iwl3945_addsta_cmd));
213 memcpy(station->sta.sta.addr, addr, ETH_ALEN);
214 station->sta.mode = 0;
215 station->sta.sta.sta_id = index;
216 station->sta.station_flags = 0;
217
218 if (priv->band == IEEE80211_BAND_5GHZ)
219 rate = IWL_RATE_6M_PLCP;
220 else
221 rate = IWL_RATE_1M_PLCP;
222
223 /* Turn on both antennas for the station... */
224 station->sta.rate_n_flags =
225 iwl3945_hw_set_rate_n_flags(rate, RATE_MCS_ANT_AB_MSK);
226
227 spin_unlock_irqrestore(&priv->sta_lock, flags_spin);
228
229 /* Add station to device's station table */
230 iwl_send_add_sta(priv,
231 (struct iwl_addsta_cmd *)&station->sta, flags);
232 return index;
233
234 }
235
236 /**
237 * iwl3945_get_antenna_flags - Get antenna flags for RXON command
238 * @priv: eeprom and antenna fields are used to determine antenna flags
239 *
240 * priv->eeprom39 is used to determine if antenna AUX/MAIN are reversed
241 * iwl3945_mod_params.antenna specifies the antenna diversity mode:
242 *
243 * IWL_ANTENNA_DIVERSITY - NIC selects best antenna by itself
244 * IWL_ANTENNA_MAIN - Force MAIN antenna
245 * IWL_ANTENNA_AUX - Force AUX antenna
246 */
247 __le32 iwl3945_get_antenna_flags(const struct iwl_priv *priv)
248 {
249 struct iwl3945_eeprom *eeprom = (struct iwl3945_eeprom *)priv->eeprom;
250
251 switch (iwl3945_mod_params.antenna) {
252 case IWL_ANTENNA_DIVERSITY:
253 return 0;
254
255 case IWL_ANTENNA_MAIN:
256 if (eeprom->antenna_switch_type)
257 return RXON_FLG_DIS_DIV_MSK | RXON_FLG_ANT_B_MSK;
258 return RXON_FLG_DIS_DIV_MSK | RXON_FLG_ANT_A_MSK;
259
260 case IWL_ANTENNA_AUX:
261 if (eeprom->antenna_switch_type)
262 return RXON_FLG_DIS_DIV_MSK | RXON_FLG_ANT_A_MSK;
263 return RXON_FLG_DIS_DIV_MSK | RXON_FLG_ANT_B_MSK;
264 }
265
266 /* bad antenna selector value */
267 IWL_ERR(priv, "Bad antenna selector value (0x%x)\n",
268 iwl3945_mod_params.antenna);
269
270 return 0; /* "diversity" is default if error */
271 }
272
273 static int iwl3945_set_ccmp_dynamic_key_info(struct iwl_priv *priv,
274 struct ieee80211_key_conf *keyconf,
275 u8 sta_id)
276 {
277 unsigned long flags;
278 __le16 key_flags = 0;
279 int ret;
280
281 key_flags |= (STA_KEY_FLG_CCMP | STA_KEY_FLG_MAP_KEY_MSK);
282 key_flags |= cpu_to_le16(keyconf->keyidx << STA_KEY_FLG_KEYID_POS);
283
284 if (sta_id == priv->hw_params.bcast_sta_id)
285 key_flags |= STA_KEY_MULTICAST_MSK;
286
287 keyconf->flags |= IEEE80211_KEY_FLAG_GENERATE_IV;
288 keyconf->hw_key_idx = keyconf->keyidx;
289 key_flags &= ~STA_KEY_FLG_INVALID;
290
291 spin_lock_irqsave(&priv->sta_lock, flags);
292 priv->stations_39[sta_id].keyinfo.alg = keyconf->alg;
293 priv->stations_39[sta_id].keyinfo.keylen = keyconf->keylen;
294 memcpy(priv->stations_39[sta_id].keyinfo.key, keyconf->key,
295 keyconf->keylen);
296
297 memcpy(priv->stations_39[sta_id].sta.key.key, keyconf->key,
298 keyconf->keylen);
299
300 if ((priv->stations_39[sta_id].sta.key.key_flags & STA_KEY_FLG_ENCRYPT_MSK)
301 == STA_KEY_FLG_NO_ENC)
302 priv->stations_39[sta_id].sta.key.key_offset =
303 iwl_get_free_ucode_key_index(priv);
304 /* else, we are overriding an existing key => no need to allocated room
305 * in uCode. */
306
307 WARN(priv->stations_39[sta_id].sta.key.key_offset == WEP_INVALID_OFFSET,
308 "no space for a new key");
309
310 priv->stations_39[sta_id].sta.key.key_flags = key_flags;
311 priv->stations_39[sta_id].sta.sta.modify_mask = STA_MODIFY_KEY_MASK;
312 priv->stations_39[sta_id].sta.mode = STA_CONTROL_MODIFY_MSK;
313
314 IWL_DEBUG_INFO(priv, "hwcrypto: modify ucode station key info\n");
315
316 ret = iwl_send_add_sta(priv,
317 (struct iwl_addsta_cmd *)&priv->stations_39[sta_id].sta, CMD_ASYNC);
318
319 spin_unlock_irqrestore(&priv->sta_lock, flags);
320
321 return ret;
322 }
323
324 static int iwl3945_set_tkip_dynamic_key_info(struct iwl_priv *priv,
325 struct ieee80211_key_conf *keyconf,
326 u8 sta_id)
327 {
328 return -EOPNOTSUPP;
329 }
330
331 static int iwl3945_set_wep_dynamic_key_info(struct iwl_priv *priv,
332 struct ieee80211_key_conf *keyconf,
333 u8 sta_id)
334 {
335 return -EOPNOTSUPP;
336 }
337
338 static int iwl3945_clear_sta_key_info(struct iwl_priv *priv, u8 sta_id)
339 {
340 unsigned long flags;
341
342 spin_lock_irqsave(&priv->sta_lock, flags);
343 memset(&priv->stations_39[sta_id].keyinfo, 0, sizeof(struct iwl_hw_key));
344 memset(&priv->stations_39[sta_id].sta.key, 0,
345 sizeof(struct iwl4965_keyinfo));
346 priv->stations_39[sta_id].sta.key.key_flags = STA_KEY_FLG_NO_ENC;
347 priv->stations_39[sta_id].sta.sta.modify_mask = STA_MODIFY_KEY_MASK;
348 priv->stations_39[sta_id].sta.mode = STA_CONTROL_MODIFY_MSK;
349 spin_unlock_irqrestore(&priv->sta_lock, flags);
350
351 IWL_DEBUG_INFO(priv, "hwcrypto: clear ucode station key info\n");
352 iwl_send_add_sta(priv,
353 (struct iwl_addsta_cmd *)&priv->stations_39[sta_id].sta, 0);
354 return 0;
355 }
356
357 static int iwl3945_set_dynamic_key(struct iwl_priv *priv,
358 struct ieee80211_key_conf *keyconf, u8 sta_id)
359 {
360 int ret = 0;
361
362 keyconf->hw_key_idx = HW_KEY_DYNAMIC;
363
364 switch (keyconf->alg) {
365 case ALG_CCMP:
366 ret = iwl3945_set_ccmp_dynamic_key_info(priv, keyconf, sta_id);
367 break;
368 case ALG_TKIP:
369 ret = iwl3945_set_tkip_dynamic_key_info(priv, keyconf, sta_id);
370 break;
371 case ALG_WEP:
372 ret = iwl3945_set_wep_dynamic_key_info(priv, keyconf, sta_id);
373 break;
374 default:
375 IWL_ERR(priv, "Unknown alg: %s alg = %d\n", __func__, keyconf->alg);
376 ret = -EINVAL;
377 }
378
379 IWL_DEBUG_WEP(priv, "Set dynamic key: alg= %d len=%d idx=%d sta=%d ret=%d\n",
380 keyconf->alg, keyconf->keylen, keyconf->keyidx,
381 sta_id, ret);
382
383 return ret;
384 }
385
386 static int iwl3945_remove_static_key(struct iwl_priv *priv)
387 {
388 int ret = -EOPNOTSUPP;
389
390 return ret;
391 }
392
393 static int iwl3945_set_static_key(struct iwl_priv *priv,
394 struct ieee80211_key_conf *key)
395 {
396 if (key->alg == ALG_WEP)
397 return -EOPNOTSUPP;
398
399 IWL_ERR(priv, "Static key invalid: alg %d\n", key->alg);
400 return -EINVAL;
401 }
402
403 static void iwl3945_clear_free_frames(struct iwl_priv *priv)
404 {
405 struct list_head *element;
406
407 IWL_DEBUG_INFO(priv, "%d frames on pre-allocated heap on clear.\n",
408 priv->frames_count);
409
410 while (!list_empty(&priv->free_frames)) {
411 element = priv->free_frames.next;
412 list_del(element);
413 kfree(list_entry(element, struct iwl3945_frame, list));
414 priv->frames_count--;
415 }
416
417 if (priv->frames_count) {
418 IWL_WARN(priv, "%d frames still in use. Did we lose one?\n",
419 priv->frames_count);
420 priv->frames_count = 0;
421 }
422 }
423
424 static struct iwl3945_frame *iwl3945_get_free_frame(struct iwl_priv *priv)
425 {
426 struct iwl3945_frame *frame;
427 struct list_head *element;
428 if (list_empty(&priv->free_frames)) {
429 frame = kzalloc(sizeof(*frame), GFP_KERNEL);
430 if (!frame) {
431 IWL_ERR(priv, "Could not allocate frame!\n");
432 return NULL;
433 }
434
435 priv->frames_count++;
436 return frame;
437 }
438
439 element = priv->free_frames.next;
440 list_del(element);
441 return list_entry(element, struct iwl3945_frame, list);
442 }
443
444 static void iwl3945_free_frame(struct iwl_priv *priv, struct iwl3945_frame *frame)
445 {
446 memset(frame, 0, sizeof(*frame));
447 list_add(&frame->list, &priv->free_frames);
448 }
449
450 unsigned int iwl3945_fill_beacon_frame(struct iwl_priv *priv,
451 struct ieee80211_hdr *hdr,
452 int left)
453 {
454
455 if (!iwl_is_associated(priv) || !priv->ibss_beacon ||
456 ((priv->iw_mode != NL80211_IFTYPE_ADHOC) &&
457 (priv->iw_mode != NL80211_IFTYPE_AP)))
458 return 0;
459
460 if (priv->ibss_beacon->len > left)
461 return 0;
462
463 memcpy(hdr, priv->ibss_beacon->data, priv->ibss_beacon->len);
464
465 return priv->ibss_beacon->len;
466 }
467
468 static int iwl3945_send_beacon_cmd(struct iwl_priv *priv)
469 {
470 struct iwl3945_frame *frame;
471 unsigned int frame_size;
472 int rc;
473 u8 rate;
474
475 frame = iwl3945_get_free_frame(priv);
476
477 if (!frame) {
478 IWL_ERR(priv, "Could not obtain free frame buffer for beacon "
479 "command.\n");
480 return -ENOMEM;
481 }
482
483 rate = iwl_rate_get_lowest_plcp(priv);
484
485 frame_size = iwl3945_hw_get_beacon_cmd(priv, frame, rate);
486
487 rc = iwl_send_cmd_pdu(priv, REPLY_TX_BEACON, frame_size,
488 &frame->u.cmd[0]);
489
490 iwl3945_free_frame(priv, frame);
491
492 return rc;
493 }
494
495 static void iwl3945_unset_hw_params(struct iwl_priv *priv)
496 {
497 if (priv->shared_virt)
498 pci_free_consistent(priv->pci_dev,
499 sizeof(struct iwl3945_shared),
500 priv->shared_virt,
501 priv->shared_phys);
502 }
503
504 #define MAX_UCODE_BEACON_INTERVAL 1024
505 #define INTEL_CONN_LISTEN_INTERVAL cpu_to_le16(0xA)
506
507 static __le16 iwl3945_adjust_beacon_interval(u16 beacon_val)
508 {
509 u16 new_val = 0;
510 u16 beacon_factor = 0;
511
512 beacon_factor =
513 (beacon_val + MAX_UCODE_BEACON_INTERVAL)
514 / MAX_UCODE_BEACON_INTERVAL;
515 new_val = beacon_val / beacon_factor;
516
517 return cpu_to_le16(new_val);
518 }
519
520 static void iwl3945_setup_rxon_timing(struct iwl_priv *priv)
521 {
522 u64 interval_tm_unit;
523 u64 tsf, result;
524 unsigned long flags;
525 struct ieee80211_conf *conf = NULL;
526 u16 beacon_int = 0;
527
528 conf = ieee80211_get_hw_conf(priv->hw);
529
530 spin_lock_irqsave(&priv->lock, flags);
531 priv->rxon_timing.timestamp = cpu_to_le64(priv->timestamp);
532 priv->rxon_timing.listen_interval = INTEL_CONN_LISTEN_INTERVAL;
533
534 tsf = priv->timestamp;
535
536 beacon_int = priv->beacon_int;
537 spin_unlock_irqrestore(&priv->lock, flags);
538
539 if (priv->iw_mode == NL80211_IFTYPE_STATION) {
540 if (beacon_int == 0) {
541 priv->rxon_timing.beacon_interval = cpu_to_le16(100);
542 priv->rxon_timing.beacon_init_val = cpu_to_le32(102400);
543 } else {
544 priv->rxon_timing.beacon_interval =
545 cpu_to_le16(beacon_int);
546 priv->rxon_timing.beacon_interval =
547 iwl3945_adjust_beacon_interval(
548 le16_to_cpu(priv->rxon_timing.beacon_interval));
549 }
550
551 priv->rxon_timing.atim_window = 0;
552 } else {
553 priv->rxon_timing.beacon_interval =
554 iwl3945_adjust_beacon_interval(
555 priv->vif->bss_conf.beacon_int);
556 /* TODO: we need to get atim_window from upper stack
557 * for now we set to 0 */
558 priv->rxon_timing.atim_window = 0;
559 }
560
561 interval_tm_unit =
562 (le16_to_cpu(priv->rxon_timing.beacon_interval) * 1024);
563 result = do_div(tsf, interval_tm_unit);
564 priv->rxon_timing.beacon_init_val =
565 cpu_to_le32((u32) ((u64) interval_tm_unit - result));
566
567 IWL_DEBUG_ASSOC(priv,
568 "beacon interval %d beacon timer %d beacon tim %d\n",
569 le16_to_cpu(priv->rxon_timing.beacon_interval),
570 le32_to_cpu(priv->rxon_timing.beacon_init_val),
571 le16_to_cpu(priv->rxon_timing.atim_window));
572 }
573
574 static void iwl3945_build_tx_cmd_hwcrypto(struct iwl_priv *priv,
575 struct ieee80211_tx_info *info,
576 struct iwl_cmd *cmd,
577 struct sk_buff *skb_frag,
578 int sta_id)
579 {
580 struct iwl3945_tx_cmd *tx = (struct iwl3945_tx_cmd *)cmd->cmd.payload;
581 struct iwl_hw_key *keyinfo = &priv->stations_39[sta_id].keyinfo;
582
583 switch (keyinfo->alg) {
584 case ALG_CCMP:
585 tx->sec_ctl = TX_CMD_SEC_CCM;
586 memcpy(tx->key, keyinfo->key, keyinfo->keylen);
587 IWL_DEBUG_TX(priv, "tx_cmd with AES hwcrypto\n");
588 break;
589
590 case ALG_TKIP:
591 break;
592
593 case ALG_WEP:
594 tx->sec_ctl = TX_CMD_SEC_WEP |
595 (info->control.hw_key->hw_key_idx & TX_CMD_SEC_MSK) << TX_CMD_SEC_SHIFT;
596
597 if (keyinfo->keylen == 13)
598 tx->sec_ctl |= TX_CMD_SEC_KEY128;
599
600 memcpy(&tx->key[3], keyinfo->key, keyinfo->keylen);
601
602 IWL_DEBUG_TX(priv, "Configuring packet for WEP encryption "
603 "with key %d\n", info->control.hw_key->hw_key_idx);
604 break;
605
606 default:
607 IWL_ERR(priv, "Unknown encode alg %d\n", keyinfo->alg);
608 break;
609 }
610 }
611
612 /*
613 * handle build REPLY_TX command notification.
614 */
615 static void iwl3945_build_tx_cmd_basic(struct iwl_priv *priv,
616 struct iwl_cmd *cmd,
617 struct ieee80211_tx_info *info,
618 struct ieee80211_hdr *hdr, u8 std_id)
619 {
620 struct iwl3945_tx_cmd *tx = (struct iwl3945_tx_cmd *)cmd->cmd.payload;
621 __le32 tx_flags = tx->tx_flags;
622 __le16 fc = hdr->frame_control;
623 u8 rc_flags = info->control.rates[0].flags;
624
625 tx->stop_time.life_time = TX_CMD_LIFE_TIME_INFINITE;
626 if (!(info->flags & IEEE80211_TX_CTL_NO_ACK)) {
627 tx_flags |= TX_CMD_FLG_ACK_MSK;
628 if (ieee80211_is_mgmt(fc))
629 tx_flags |= TX_CMD_FLG_SEQ_CTL_MSK;
630 if (ieee80211_is_probe_resp(fc) &&
631 !(le16_to_cpu(hdr->seq_ctrl) & 0xf))
632 tx_flags |= TX_CMD_FLG_TSF_MSK;
633 } else {
634 tx_flags &= (~TX_CMD_FLG_ACK_MSK);
635 tx_flags |= TX_CMD_FLG_SEQ_CTL_MSK;
636 }
637
638 tx->sta_id = std_id;
639 if (ieee80211_has_morefrags(fc))
640 tx_flags |= TX_CMD_FLG_MORE_FRAG_MSK;
641
642 if (ieee80211_is_data_qos(fc)) {
643 u8 *qc = ieee80211_get_qos_ctl(hdr);
644 tx->tid_tspec = qc[0] & 0xf;
645 tx_flags &= ~TX_CMD_FLG_SEQ_CTL_MSK;
646 } else {
647 tx_flags |= TX_CMD_FLG_SEQ_CTL_MSK;
648 }
649
650 if (rc_flags & IEEE80211_TX_RC_USE_RTS_CTS) {
651 tx_flags |= TX_CMD_FLG_RTS_MSK;
652 tx_flags &= ~TX_CMD_FLG_CTS_MSK;
653 } else if (rc_flags & IEEE80211_TX_RC_USE_CTS_PROTECT) {
654 tx_flags &= ~TX_CMD_FLG_RTS_MSK;
655 tx_flags |= TX_CMD_FLG_CTS_MSK;
656 }
657
658 if ((tx_flags & TX_CMD_FLG_RTS_MSK) || (tx_flags & TX_CMD_FLG_CTS_MSK))
659 tx_flags |= TX_CMD_FLG_FULL_TXOP_PROT_MSK;
660
661 tx_flags &= ~(TX_CMD_FLG_ANT_SEL_MSK);
662 if (ieee80211_is_mgmt(fc)) {
663 if (ieee80211_is_assoc_req(fc) || ieee80211_is_reassoc_req(fc))
664 tx->timeout.pm_frame_timeout = cpu_to_le16(3);
665 else
666 tx->timeout.pm_frame_timeout = cpu_to_le16(2);
667 } else {
668 tx->timeout.pm_frame_timeout = 0;
669 #ifdef CONFIG_IWLWIFI_LEDS
670 priv->rxtxpackets += le16_to_cpu(cmd->cmd.tx.len);
671 #endif
672 }
673
674 tx->driver_txop = 0;
675 tx->tx_flags = tx_flags;
676 tx->next_frame_len = 0;
677 }
678
679 /*
680 * start REPLY_TX command process
681 */
682 static int iwl3945_tx_skb(struct iwl_priv *priv, struct sk_buff *skb)
683 {
684 struct ieee80211_hdr *hdr = (struct ieee80211_hdr *)skb->data;
685 struct ieee80211_tx_info *info = IEEE80211_SKB_CB(skb);
686 struct iwl3945_tx_cmd *tx;
687 struct iwl_tx_queue *txq = NULL;
688 struct iwl_queue *q = NULL;
689 struct iwl_cmd *out_cmd = NULL;
690 dma_addr_t phys_addr;
691 dma_addr_t txcmd_phys;
692 int txq_id = skb_get_queue_mapping(skb);
693 u16 len, idx, len_org, hdr_len; /* TODO: len_org is not used */
694 u8 id;
695 u8 unicast;
696 u8 sta_id;
697 u8 tid = 0;
698 u16 seq_number = 0;
699 __le16 fc;
700 u8 wait_write_ptr = 0;
701 u8 *qc = NULL;
702 unsigned long flags;
703 int rc;
704
705 spin_lock_irqsave(&priv->lock, flags);
706 if (iwl_is_rfkill(priv)) {
707 IWL_DEBUG_DROP(priv, "Dropping - RF KILL\n");
708 goto drop_unlock;
709 }
710
711 if ((ieee80211_get_tx_rate(priv->hw, info)->hw_value & 0xFF) == IWL_INVALID_RATE) {
712 IWL_ERR(priv, "ERROR: No TX rate available.\n");
713 goto drop_unlock;
714 }
715
716 unicast = !is_multicast_ether_addr(hdr->addr1);
717 id = 0;
718
719 fc = hdr->frame_control;
720
721 #ifdef CONFIG_IWLWIFI_DEBUG
722 if (ieee80211_is_auth(fc))
723 IWL_DEBUG_TX(priv, "Sending AUTH frame\n");
724 else if (ieee80211_is_assoc_req(fc))
725 IWL_DEBUG_TX(priv, "Sending ASSOC frame\n");
726 else if (ieee80211_is_reassoc_req(fc))
727 IWL_DEBUG_TX(priv, "Sending REASSOC frame\n");
728 #endif
729
730 /* drop all data frame if we are not associated */
731 if (ieee80211_is_data(fc) &&
732 (!iwl_is_monitor_mode(priv)) && /* packet injection */
733 (!iwl_is_associated(priv) ||
734 ((priv->iw_mode == NL80211_IFTYPE_STATION) && !priv->assoc_id))) {
735 IWL_DEBUG_DROP(priv, "Dropping - !iwl_is_associated\n");
736 goto drop_unlock;
737 }
738
739 spin_unlock_irqrestore(&priv->lock, flags);
740
741 hdr_len = ieee80211_hdrlen(fc);
742
743 /* Find (or create) index into station table for destination station */
744 sta_id = iwl_get_sta_id(priv, hdr);
745 if (sta_id == IWL_INVALID_STATION) {
746 IWL_DEBUG_DROP(priv, "Dropping - INVALID STATION: %pM\n",
747 hdr->addr1);
748 goto drop;
749 }
750
751 IWL_DEBUG_RATE(priv, "station Id %d\n", sta_id);
752
753 if (ieee80211_is_data_qos(fc)) {
754 qc = ieee80211_get_qos_ctl(hdr);
755 tid = qc[0] & IEEE80211_QOS_CTL_TID_MASK;
756 seq_number = priv->stations_39[sta_id].tid[tid].seq_number &
757 IEEE80211_SCTL_SEQ;
758 hdr->seq_ctrl = cpu_to_le16(seq_number) |
759 (hdr->seq_ctrl &
760 cpu_to_le16(IEEE80211_SCTL_FRAG));
761 seq_number += 0x10;
762 }
763
764 /* Descriptor for chosen Tx queue */
765 txq = &priv->txq[txq_id];
766 q = &txq->q;
767
768 spin_lock_irqsave(&priv->lock, flags);
769
770 idx = get_cmd_index(q, q->write_ptr, 0);
771
772 /* Set up driver data for this TFD */
773 memset(&(txq->txb[q->write_ptr]), 0, sizeof(struct iwl_tx_info));
774 txq->txb[q->write_ptr].skb[0] = skb;
775
776 /* Init first empty entry in queue's array of Tx/cmd buffers */
777 out_cmd = txq->cmd[idx];
778 tx = (struct iwl3945_tx_cmd *)out_cmd->cmd.payload;
779 memset(&out_cmd->hdr, 0, sizeof(out_cmd->hdr));
780 memset(tx, 0, sizeof(*tx));
781
782 /*
783 * Set up the Tx-command (not MAC!) header.
784 * Store the chosen Tx queue and TFD index within the sequence field;
785 * after Tx, uCode's Tx response will return this value so driver can
786 * locate the frame within the tx queue and do post-tx processing.
787 */
788 out_cmd->hdr.cmd = REPLY_TX;
789 out_cmd->hdr.sequence = cpu_to_le16((u16)(QUEUE_TO_SEQ(txq_id) |
790 INDEX_TO_SEQ(q->write_ptr)));
791
792 /* Copy MAC header from skb into command buffer */
793 memcpy(tx->hdr, hdr, hdr_len);
794
795
796 if (info->control.hw_key)
797 iwl3945_build_tx_cmd_hwcrypto(priv, info, out_cmd, skb, sta_id);
798
799 /* TODO need this for burst mode later on */
800 iwl3945_build_tx_cmd_basic(priv, out_cmd, info, hdr, sta_id);
801
802 /* set is_hcca to 0; it probably will never be implemented */
803 iwl3945_hw_build_tx_cmd_rate(priv, out_cmd, info, hdr, sta_id, 0);
804
805 /* Total # bytes to be transmitted */
806 len = (u16)skb->len;
807 tx->len = cpu_to_le16(len);
808
809
810 tx->tx_flags &= ~TX_CMD_FLG_ANT_A_MSK;
811 tx->tx_flags &= ~TX_CMD_FLG_ANT_B_MSK;
812
813 if (!ieee80211_has_morefrags(hdr->frame_control)) {
814 txq->need_update = 1;
815 if (qc)
816 priv->stations_39[sta_id].tid[tid].seq_number = seq_number;
817 } else {
818 wait_write_ptr = 1;
819 txq->need_update = 0;
820 }
821
822 IWL_DEBUG_TX(priv, "sequence nr = 0X%x \n",
823 le16_to_cpu(out_cmd->hdr.sequence));
824 IWL_DEBUG_TX(priv, "tx_flags = 0X%x \n", le32_to_cpu(tx->tx_flags));
825 iwl_print_hex_dump(priv, IWL_DL_TX, tx, sizeof(*tx));
826 iwl_print_hex_dump(priv, IWL_DL_TX, (u8 *)tx->hdr,
827 ieee80211_hdrlen(fc));
828
829 /*
830 * Use the first empty entry in this queue's command buffer array
831 * to contain the Tx command and MAC header concatenated together
832 * (payload data will be in another buffer).
833 * Size of this varies, due to varying MAC header length.
834 * If end is not dword aligned, we'll have 2 extra bytes at the end
835 * of the MAC header (device reads on dword boundaries).
836 * We'll tell device about this padding later.
837 */
838 len = sizeof(struct iwl3945_tx_cmd) +
839 sizeof(struct iwl_cmd_header) + hdr_len;
840
841 len_org = len;
842 len = (len + 3) & ~3;
843
844 if (len_org != len)
845 len_org = 1;
846 else
847 len_org = 0;
848
849 /* Physical address of this Tx command's header (not MAC header!),
850 * within command buffer array. */
851 txcmd_phys = pci_map_single(priv->pci_dev, &out_cmd->hdr,
852 len, PCI_DMA_TODEVICE);
853 /* we do not map meta data ... so we can safely access address to
854 * provide to unmap command*/
855 pci_unmap_addr_set(&out_cmd->meta, mapping, txcmd_phys);
856 pci_unmap_len_set(&out_cmd->meta, len, len);
857
858 /* Add buffer containing Tx command and MAC(!) header to TFD's
859 * first entry */
860 priv->cfg->ops->lib->txq_attach_buf_to_tfd(priv, txq,
861 txcmd_phys, len, 1, 0);
862
863
864 /* Set up TFD's 2nd entry to point directly to remainder of skb,
865 * if any (802.11 null frames have no payload). */
866 len = skb->len - hdr_len;
867 if (len) {
868 phys_addr = pci_map_single(priv->pci_dev, skb->data + hdr_len,
869 len, PCI_DMA_TODEVICE);
870 priv->cfg->ops->lib->txq_attach_buf_to_tfd(priv, txq,
871 phys_addr, len,
872 0, U32_PAD(len));
873 }
874
875
876 /* Tell device the write index *just past* this latest filled TFD */
877 q->write_ptr = iwl_queue_inc_wrap(q->write_ptr, q->n_bd);
878 rc = iwl_txq_update_write_ptr(priv, txq);
879 spin_unlock_irqrestore(&priv->lock, flags);
880
881 if (rc)
882 return rc;
883
884 if ((iwl_queue_space(q) < q->high_mark)
885 && priv->mac80211_registered) {
886 if (wait_write_ptr) {
887 spin_lock_irqsave(&priv->lock, flags);
888 txq->need_update = 1;
889 iwl_txq_update_write_ptr(priv, txq);
890 spin_unlock_irqrestore(&priv->lock, flags);
891 }
892
893 iwl_stop_queue(priv, skb_get_queue_mapping(skb));
894 }
895
896 return 0;
897
898 drop_unlock:
899 spin_unlock_irqrestore(&priv->lock, flags);
900 drop:
901 return -1;
902 }
903
904 #ifdef CONFIG_IWL3945_SPECTRUM_MEASUREMENT
905
906 #include "iwl-spectrum.h"
907
908 #define BEACON_TIME_MASK_LOW 0x00FFFFFF
909 #define BEACON_TIME_MASK_HIGH 0xFF000000
910 #define TIME_UNIT 1024
911
912 /*
913 * extended beacon time format
914 * time in usec will be changed into a 32-bit value in 8:24 format
915 * the high 1 byte is the beacon counts
916 * the lower 3 bytes is the time in usec within one beacon interval
917 */
918
919 static u32 iwl3945_usecs_to_beacons(u32 usec, u32 beacon_interval)
920 {
921 u32 quot;
922 u32 rem;
923 u32 interval = beacon_interval * 1024;
924
925 if (!interval || !usec)
926 return 0;
927
928 quot = (usec / interval) & (BEACON_TIME_MASK_HIGH >> 24);
929 rem = (usec % interval) & BEACON_TIME_MASK_LOW;
930
931 return (quot << 24) + rem;
932 }
933
934 /* base is usually what we get from ucode with each received frame,
935 * the same as HW timer counter counting down
936 */
937
938 static __le32 iwl3945_add_beacon_time(u32 base, u32 addon, u32 beacon_interval)
939 {
940 u32 base_low = base & BEACON_TIME_MASK_LOW;
941 u32 addon_low = addon & BEACON_TIME_MASK_LOW;
942 u32 interval = beacon_interval * TIME_UNIT;
943 u32 res = (base & BEACON_TIME_MASK_HIGH) +
944 (addon & BEACON_TIME_MASK_HIGH);
945
946 if (base_low > addon_low)
947 res += base_low - addon_low;
948 else if (base_low < addon_low) {
949 res += interval + base_low - addon_low;
950 res += (1 << 24);
951 } else
952 res += (1 << 24);
953
954 return cpu_to_le32(res);
955 }
956
957 static int iwl3945_get_measurement(struct iwl_priv *priv,
958 struct ieee80211_measurement_params *params,
959 u8 type)
960 {
961 struct iwl_spectrum_cmd spectrum;
962 struct iwl_rx_packet *res;
963 struct iwl_host_cmd cmd = {
964 .id = REPLY_SPECTRUM_MEASUREMENT_CMD,
965 .data = (void *)&spectrum,
966 .meta.flags = CMD_WANT_SKB,
967 };
968 u32 add_time = le64_to_cpu(params->start_time);
969 int rc;
970 int spectrum_resp_status;
971 int duration = le16_to_cpu(params->duration);
972
973 if (iwl_is_associated(priv))
974 add_time =
975 iwl3945_usecs_to_beacons(
976 le64_to_cpu(params->start_time) - priv->last_tsf,
977 le16_to_cpu(priv->rxon_timing.beacon_interval));
978
979 memset(&spectrum, 0, sizeof(spectrum));
980
981 spectrum.channel_count = cpu_to_le16(1);
982 spectrum.flags =
983 RXON_FLG_TSF2HOST_MSK | RXON_FLG_ANT_A_MSK | RXON_FLG_DIS_DIV_MSK;
984 spectrum.filter_flags = MEASUREMENT_FILTER_FLAG;
985 cmd.len = sizeof(spectrum);
986 spectrum.len = cpu_to_le16(cmd.len - sizeof(spectrum.len));
987
988 if (iwl_is_associated(priv))
989 spectrum.start_time =
990 iwl3945_add_beacon_time(priv->last_beacon_time,
991 add_time,
992 le16_to_cpu(priv->rxon_timing.beacon_interval));
993 else
994 spectrum.start_time = 0;
995
996 spectrum.channels[0].duration = cpu_to_le32(duration * TIME_UNIT);
997 spectrum.channels[0].channel = params->channel;
998 spectrum.channels[0].type = type;
999 if (priv->active_rxon.flags & RXON_FLG_BAND_24G_MSK)
1000 spectrum.flags |= RXON_FLG_BAND_24G_MSK |
1001 RXON_FLG_AUTO_DETECT_MSK | RXON_FLG_TGG_PROTECT_MSK;
1002
1003 rc = iwl_send_cmd_sync(priv, &cmd);
1004 if (rc)
1005 return rc;
1006
1007 res = (struct iwl_rx_packet *)cmd.meta.u.skb->data;
1008 if (res->hdr.flags & IWL_CMD_FAILED_MSK) {
1009 IWL_ERR(priv, "Bad return from REPLY_RX_ON_ASSOC command\n");
1010 rc = -EIO;
1011 }
1012
1013 spectrum_resp_status = le16_to_cpu(res->u.spectrum.status);
1014 switch (spectrum_resp_status) {
1015 case 0: /* Command will be handled */
1016 if (res->u.spectrum.id != 0xff) {
1017 IWL_DEBUG_INFO(priv, "Replaced existing measurement: %d\n",
1018 res->u.spectrum.id);
1019 priv->measurement_status &= ~MEASUREMENT_READY;
1020 }
1021 priv->measurement_status |= MEASUREMENT_ACTIVE;
1022 rc = 0;
1023 break;
1024
1025 case 1: /* Command will not be handled */
1026 rc = -EAGAIN;
1027 break;
1028 }
1029
1030 dev_kfree_skb_any(cmd.meta.u.skb);
1031
1032 return rc;
1033 }
1034 #endif
1035
1036 static void iwl3945_rx_reply_alive(struct iwl_priv *priv,
1037 struct iwl_rx_mem_buffer *rxb)
1038 {
1039 struct iwl_rx_packet *pkt = (void *)rxb->skb->data;
1040 struct iwl_alive_resp *palive;
1041 struct delayed_work *pwork;
1042
1043 palive = &pkt->u.alive_frame;
1044
1045 IWL_DEBUG_INFO(priv, "Alive ucode status 0x%08X revision "
1046 "0x%01X 0x%01X\n",
1047 palive->is_valid, palive->ver_type,
1048 palive->ver_subtype);
1049
1050 if (palive->ver_subtype == INITIALIZE_SUBTYPE) {
1051 IWL_DEBUG_INFO(priv, "Initialization Alive received.\n");
1052 memcpy(&priv->card_alive_init, &pkt->u.alive_frame,
1053 sizeof(struct iwl_alive_resp));
1054 pwork = &priv->init_alive_start;
1055 } else {
1056 IWL_DEBUG_INFO(priv, "Runtime Alive received.\n");
1057 memcpy(&priv->card_alive, &pkt->u.alive_frame,
1058 sizeof(struct iwl_alive_resp));
1059 pwork = &priv->alive_start;
1060 iwl3945_disable_events(priv);
1061 }
1062
1063 /* We delay the ALIVE response by 5ms to
1064 * give the HW RF Kill time to activate... */
1065 if (palive->is_valid == UCODE_VALID_OK)
1066 queue_delayed_work(priv->workqueue, pwork,
1067 msecs_to_jiffies(5));
1068 else
1069 IWL_WARN(priv, "uCode did not respond OK.\n");
1070 }
1071
1072 static void iwl3945_rx_reply_add_sta(struct iwl_priv *priv,
1073 struct iwl_rx_mem_buffer *rxb)
1074 {
1075 #ifdef CONFIG_IWLWIFI_DEBUG
1076 struct iwl_rx_packet *pkt = (void *)rxb->skb->data;
1077 #endif
1078
1079 IWL_DEBUG_RX(priv, "Received REPLY_ADD_STA: 0x%02X\n", pkt->u.status);
1080 return;
1081 }
1082
1083 static void iwl3945_bg_beacon_update(struct work_struct *work)
1084 {
1085 struct iwl_priv *priv =
1086 container_of(work, struct iwl_priv, beacon_update);
1087 struct sk_buff *beacon;
1088
1089 /* Pull updated AP beacon from mac80211. will fail if not in AP mode */
1090 beacon = ieee80211_beacon_get(priv->hw, priv->vif);
1091
1092 if (!beacon) {
1093 IWL_ERR(priv, "update beacon failed\n");
1094 return;
1095 }
1096
1097 mutex_lock(&priv->mutex);
1098 /* new beacon skb is allocated every time; dispose previous.*/
1099 if (priv->ibss_beacon)
1100 dev_kfree_skb(priv->ibss_beacon);
1101
1102 priv->ibss_beacon = beacon;
1103 mutex_unlock(&priv->mutex);
1104
1105 iwl3945_send_beacon_cmd(priv);
1106 }
1107
1108 static void iwl3945_rx_beacon_notif(struct iwl_priv *priv,
1109 struct iwl_rx_mem_buffer *rxb)
1110 {
1111 #ifdef CONFIG_IWLWIFI_DEBUG
1112 struct iwl_rx_packet *pkt = (void *)rxb->skb->data;
1113 struct iwl3945_beacon_notif *beacon = &(pkt->u.beacon_status);
1114 u8 rate = beacon->beacon_notify_hdr.rate;
1115
1116 IWL_DEBUG_RX(priv, "beacon status %x retries %d iss %d "
1117 "tsf %d %d rate %d\n",
1118 le32_to_cpu(beacon->beacon_notify_hdr.status) & TX_STATUS_MSK,
1119 beacon->beacon_notify_hdr.failure_frame,
1120 le32_to_cpu(beacon->ibss_mgr_status),
1121 le32_to_cpu(beacon->high_tsf),
1122 le32_to_cpu(beacon->low_tsf), rate);
1123 #endif
1124
1125 if ((priv->iw_mode == NL80211_IFTYPE_AP) &&
1126 (!test_bit(STATUS_EXIT_PENDING, &priv->status)))
1127 queue_work(priv->workqueue, &priv->beacon_update);
1128 }
1129
1130 /* Handle notification from uCode that card's power state is changing
1131 * due to software, hardware, or critical temperature RFKILL */
1132 static void iwl3945_rx_card_state_notif(struct iwl_priv *priv,
1133 struct iwl_rx_mem_buffer *rxb)
1134 {
1135 struct iwl_rx_packet *pkt = (void *)rxb->skb->data;
1136 u32 flags = le32_to_cpu(pkt->u.card_state_notif.flags);
1137 unsigned long status = priv->status;
1138
1139 IWL_DEBUG_RF_KILL(priv, "Card state received: HW:%s SW:%s\n",
1140 (flags & HW_CARD_DISABLED) ? "Kill" : "On",
1141 (flags & SW_CARD_DISABLED) ? "Kill" : "On");
1142
1143 iwl_write32(priv, CSR_UCODE_DRV_GP1_SET,
1144 CSR_UCODE_DRV_GP1_BIT_CMD_BLOCKED);
1145
1146 if (flags & HW_CARD_DISABLED)
1147 set_bit(STATUS_RF_KILL_HW, &priv->status);
1148 else
1149 clear_bit(STATUS_RF_KILL_HW, &priv->status);
1150
1151
1152 if (flags & SW_CARD_DISABLED)
1153 set_bit(STATUS_RF_KILL_SW, &priv->status);
1154 else
1155 clear_bit(STATUS_RF_KILL_SW, &priv->status);
1156
1157 iwl_scan_cancel(priv);
1158
1159 if ((test_bit(STATUS_RF_KILL_HW, &status) !=
1160 test_bit(STATUS_RF_KILL_HW, &priv->status)) ||
1161 (test_bit(STATUS_RF_KILL_SW, &status) !=
1162 test_bit(STATUS_RF_KILL_SW, &priv->status)))
1163 queue_work(priv->workqueue, &priv->rf_kill);
1164 else
1165 wake_up_interruptible(&priv->wait_command_queue);
1166 }
1167
1168 /**
1169 * iwl3945_setup_rx_handlers - Initialize Rx handler callbacks
1170 *
1171 * Setup the RX handlers for each of the reply types sent from the uCode
1172 * to the host.
1173 *
1174 * This function chains into the hardware specific files for them to setup
1175 * any hardware specific handlers as well.
1176 */
1177 static void iwl3945_setup_rx_handlers(struct iwl_priv *priv)
1178 {
1179 priv->rx_handlers[REPLY_ALIVE] = iwl3945_rx_reply_alive;
1180 priv->rx_handlers[REPLY_ADD_STA] = iwl3945_rx_reply_add_sta;
1181 priv->rx_handlers[REPLY_ERROR] = iwl_rx_reply_error;
1182 priv->rx_handlers[CHANNEL_SWITCH_NOTIFICATION] = iwl_rx_csa;
1183 priv->rx_handlers[PM_SLEEP_NOTIFICATION] = iwl_rx_pm_sleep_notif;
1184 priv->rx_handlers[PM_DEBUG_STATISTIC_NOTIFIC] =
1185 iwl_rx_pm_debug_statistics_notif;
1186 priv->rx_handlers[BEACON_NOTIFICATION] = iwl3945_rx_beacon_notif;
1187
1188 /*
1189 * The same handler is used for both the REPLY to a discrete
1190 * statistics request from the host as well as for the periodic
1191 * statistics notifications (after received beacons) from the uCode.
1192 */
1193 priv->rx_handlers[REPLY_STATISTICS_CMD] = iwl3945_hw_rx_statistics;
1194 priv->rx_handlers[STATISTICS_NOTIFICATION] = iwl3945_hw_rx_statistics;
1195
1196 iwl_setup_spectrum_handlers(priv);
1197 iwl_setup_rx_scan_handlers(priv);
1198 priv->rx_handlers[CARD_STATE_NOTIFICATION] = iwl3945_rx_card_state_notif;
1199
1200 /* Set up hardware specific Rx handlers */
1201 iwl3945_hw_rx_handler_setup(priv);
1202 }
1203
1204 /************************** RX-FUNCTIONS ****************************/
1205 /*
1206 * Rx theory of operation
1207 *
1208 * The host allocates 32 DMA target addresses and passes the host address
1209 * to the firmware at register IWL_RFDS_TABLE_LOWER + N * RFD_SIZE where N is
1210 * 0 to 31
1211 *
1212 * Rx Queue Indexes
1213 * The host/firmware share two index registers for managing the Rx buffers.
1214 *
1215 * The READ index maps to the first position that the firmware may be writing
1216 * to -- the driver can read up to (but not including) this position and get
1217 * good data.
1218 * The READ index is managed by the firmware once the card is enabled.
1219 *
1220 * The WRITE index maps to the last position the driver has read from -- the
1221 * position preceding WRITE is the last slot the firmware can place a packet.
1222 *
1223 * The queue is empty (no good data) if WRITE = READ - 1, and is full if
1224 * WRITE = READ.
1225 *
1226 * During initialization, the host sets up the READ queue position to the first
1227 * INDEX position, and WRITE to the last (READ - 1 wrapped)
1228 *
1229 * When the firmware places a packet in a buffer, it will advance the READ index
1230 * and fire the RX interrupt. The driver can then query the READ index and
1231 * process as many packets as possible, moving the WRITE index forward as it
1232 * resets the Rx queue buffers with new memory.
1233 *
1234 * The management in the driver is as follows:
1235 * + A list of pre-allocated SKBs is stored in iwl->rxq->rx_free. When
1236 * iwl->rxq->free_count drops to or below RX_LOW_WATERMARK, work is scheduled
1237 * to replenish the iwl->rxq->rx_free.
1238 * + In iwl3945_rx_replenish (scheduled) if 'processed' != 'read' then the
1239 * iwl->rxq is replenished and the READ INDEX is updated (updating the
1240 * 'processed' and 'read' driver indexes as well)
1241 * + A received packet is processed and handed to the kernel network stack,
1242 * detached from the iwl->rxq. The driver 'processed' index is updated.
1243 * + The Host/Firmware iwl->rxq is replenished at tasklet time from the rx_free
1244 * list. If there are no allocated buffers in iwl->rxq->rx_free, the READ
1245 * INDEX is not incremented and iwl->status(RX_STALLED) is set. If there
1246 * were enough free buffers and RX_STALLED is set it is cleared.
1247 *
1248 *
1249 * Driver sequence:
1250 *
1251 * iwl3945_rx_replenish() Replenishes rx_free list from rx_used, and calls
1252 * iwl3945_rx_queue_restock
1253 * iwl3945_rx_queue_restock() Moves available buffers from rx_free into Rx
1254 * queue, updates firmware pointers, and updates
1255 * the WRITE index. If insufficient rx_free buffers
1256 * are available, schedules iwl3945_rx_replenish
1257 *
1258 * -- enable interrupts --
1259 * ISR - iwl3945_rx() Detach iwl_rx_mem_buffers from pool up to the
1260 * READ INDEX, detaching the SKB from the pool.
1261 * Moves the packet buffer from queue to rx_used.
1262 * Calls iwl3945_rx_queue_restock to refill any empty
1263 * slots.
1264 * ...
1265 *
1266 */
1267
1268 /**
1269 * iwl3945_dma_addr2rbd_ptr - convert a DMA address to a uCode read buffer ptr
1270 */
1271 static inline __le32 iwl3945_dma_addr2rbd_ptr(struct iwl_priv *priv,
1272 dma_addr_t dma_addr)
1273 {
1274 return cpu_to_le32((u32)dma_addr);
1275 }
1276
1277 /**
1278 * iwl3945_rx_queue_restock - refill RX queue from pre-allocated pool
1279 *
1280 * If there are slots in the RX queue that need to be restocked,
1281 * and we have free pre-allocated buffers, fill the ranks as much
1282 * as we can, pulling from rx_free.
1283 *
1284 * This moves the 'write' index forward to catch up with 'processed', and
1285 * also updates the memory address in the firmware to reference the new
1286 * target buffer.
1287 */
1288 static int iwl3945_rx_queue_restock(struct iwl_priv *priv)
1289 {
1290 struct iwl_rx_queue *rxq = &priv->rxq;
1291 struct list_head *element;
1292 struct iwl_rx_mem_buffer *rxb;
1293 unsigned long flags;
1294 int write, rc;
1295
1296 spin_lock_irqsave(&rxq->lock, flags);
1297 write = rxq->write & ~0x7;
1298 while ((iwl_rx_queue_space(rxq) > 0) && (rxq->free_count)) {
1299 /* Get next free Rx buffer, remove from free list */
1300 element = rxq->rx_free.next;
1301 rxb = list_entry(element, struct iwl_rx_mem_buffer, list);
1302 list_del(element);
1303
1304 /* Point to Rx buffer via next RBD in circular buffer */
1305 rxq->bd[rxq->write] = iwl3945_dma_addr2rbd_ptr(priv, rxb->real_dma_addr);
1306 rxq->queue[rxq->write] = rxb;
1307 rxq->write = (rxq->write + 1) & RX_QUEUE_MASK;
1308 rxq->free_count--;
1309 }
1310 spin_unlock_irqrestore(&rxq->lock, flags);
1311 /* If the pre-allocated buffer pool is dropping low, schedule to
1312 * refill it */
1313 if (rxq->free_count <= RX_LOW_WATERMARK)
1314 queue_work(priv->workqueue, &priv->rx_replenish);
1315
1316
1317 /* If we've added more space for the firmware to place data, tell it.
1318 * Increment device's write pointer in multiples of 8. */
1319 if ((write != (rxq->write & ~0x7))
1320 || (abs(rxq->write - rxq->read) > 7)) {
1321 spin_lock_irqsave(&rxq->lock, flags);
1322 rxq->need_update = 1;
1323 spin_unlock_irqrestore(&rxq->lock, flags);
1324 rc = iwl_rx_queue_update_write_ptr(priv, rxq);
1325 if (rc)
1326 return rc;
1327 }
1328
1329 return 0;
1330 }
1331
1332 /**
1333 * iwl3945_rx_replenish - Move all used packet from rx_used to rx_free
1334 *
1335 * When moving to rx_free an SKB is allocated for the slot.
1336 *
1337 * Also restock the Rx queue via iwl3945_rx_queue_restock.
1338 * This is called as a scheduled work item (except for during initialization)
1339 */
1340 static void iwl3945_rx_allocate(struct iwl_priv *priv)
1341 {
1342 struct iwl_rx_queue *rxq = &priv->rxq;
1343 struct list_head *element;
1344 struct iwl_rx_mem_buffer *rxb;
1345 unsigned long flags;
1346
1347 while (1) {
1348 spin_lock_irqsave(&rxq->lock, flags);
1349
1350 if (list_empty(&rxq->rx_used)) {
1351 spin_unlock_irqrestore(&rxq->lock, flags);
1352 return;
1353 }
1354
1355 element = rxq->rx_used.next;
1356 rxb = list_entry(element, struct iwl_rx_mem_buffer, list);
1357 list_del(element);
1358 spin_unlock_irqrestore(&rxq->lock, flags);
1359
1360 /* Alloc a new receive buffer */
1361 rxb->skb =
1362 alloc_skb(priv->hw_params.rx_buf_size,
1363 GFP_KERNEL);
1364 if (!rxb->skb) {
1365 if (net_ratelimit())
1366 IWL_CRIT(priv, ": Can not allocate SKB buffers\n");
1367 /* We don't reschedule replenish work here -- we will
1368 * call the restock method and if it still needs
1369 * more buffers it will schedule replenish */
1370 break;
1371 }
1372
1373 /* If radiotap head is required, reserve some headroom here.
1374 * The physical head count is a variable rx_stats->phy_count.
1375 * We reserve 4 bytes here. Plus these extra bytes, the
1376 * headroom of the physical head should be enough for the
1377 * radiotap head that iwl3945 supported. See iwl3945_rt.
1378 */
1379 skb_reserve(rxb->skb, 4);
1380
1381 /* Get physical address of RB/SKB */
1382 rxb->real_dma_addr = pci_map_single(priv->pci_dev,
1383 rxb->skb->data,
1384 priv->hw_params.rx_buf_size,
1385 PCI_DMA_FROMDEVICE);
1386
1387 spin_lock_irqsave(&rxq->lock, flags);
1388 list_add_tail(&rxb->list, &rxq->rx_free);
1389 priv->alloc_rxb_skb++;
1390 rxq->free_count++;
1391 spin_unlock_irqrestore(&rxq->lock, flags);
1392 }
1393 }
1394
1395 void iwl3945_rx_queue_reset(struct iwl_priv *priv, struct iwl_rx_queue *rxq)
1396 {
1397 unsigned long flags;
1398 int i;
1399 spin_lock_irqsave(&rxq->lock, flags);
1400 INIT_LIST_HEAD(&rxq->rx_free);
1401 INIT_LIST_HEAD(&rxq->rx_used);
1402 /* Fill the rx_used queue with _all_ of the Rx buffers */
1403 for (i = 0; i < RX_FREE_BUFFERS + RX_QUEUE_SIZE; i++) {
1404 /* In the reset function, these buffers may have been allocated
1405 * to an SKB, so we need to unmap and free potential storage */
1406 if (rxq->pool[i].skb != NULL) {
1407 pci_unmap_single(priv->pci_dev,
1408 rxq->pool[i].real_dma_addr,
1409 priv->hw_params.rx_buf_size,
1410 PCI_DMA_FROMDEVICE);
1411 priv->alloc_rxb_skb--;
1412 dev_kfree_skb(rxq->pool[i].skb);
1413 rxq->pool[i].skb = NULL;
1414 }
1415 list_add_tail(&rxq->pool[i].list, &rxq->rx_used);
1416 }
1417
1418 /* Set us so that we have processed and used all buffers, but have
1419 * not restocked the Rx queue with fresh buffers */
1420 rxq->read = rxq->write = 0;
1421 rxq->free_count = 0;
1422 spin_unlock_irqrestore(&rxq->lock, flags);
1423 }
1424
1425 void iwl3945_rx_replenish(void *data)
1426 {
1427 struct iwl_priv *priv = data;
1428 unsigned long flags;
1429
1430 iwl3945_rx_allocate(priv);
1431
1432 spin_lock_irqsave(&priv->lock, flags);
1433 iwl3945_rx_queue_restock(priv);
1434 spin_unlock_irqrestore(&priv->lock, flags);
1435 }
1436
1437 /* Assumes that the skb field of the buffers in 'pool' is kept accurate.
1438 * If an SKB has been detached, the POOL needs to have its SKB set to NULL
1439 * This free routine walks the list of POOL entries and if SKB is set to
1440 * non NULL it is unmapped and freed
1441 */
1442 static void iwl3945_rx_queue_free(struct iwl_priv *priv, struct iwl_rx_queue *rxq)
1443 {
1444 int i;
1445 for (i = 0; i < RX_QUEUE_SIZE + RX_FREE_BUFFERS; i++) {
1446 if (rxq->pool[i].skb != NULL) {
1447 pci_unmap_single(priv->pci_dev,
1448 rxq->pool[i].real_dma_addr,
1449 priv->hw_params.rx_buf_size,
1450 PCI_DMA_FROMDEVICE);
1451 dev_kfree_skb(rxq->pool[i].skb);
1452 }
1453 }
1454
1455 pci_free_consistent(priv->pci_dev, 4 * RX_QUEUE_SIZE, rxq->bd,
1456 rxq->dma_addr);
1457 pci_free_consistent(priv->pci_dev, sizeof(struct iwl_rb_status),
1458 rxq->rb_stts, rxq->rb_stts_dma);
1459 rxq->bd = NULL;
1460 rxq->rb_stts = NULL;
1461 }
1462
1463
1464 /* Convert linear signal-to-noise ratio into dB */
1465 static u8 ratio2dB[100] = {
1466 /* 0 1 2 3 4 5 6 7 8 9 */
1467 0, 0, 6, 10, 12, 14, 16, 17, 18, 19, /* 00 - 09 */
1468 20, 21, 22, 22, 23, 23, 24, 25, 26, 26, /* 10 - 19 */
1469 26, 26, 26, 27, 27, 28, 28, 28, 29, 29, /* 20 - 29 */
1470 29, 30, 30, 30, 31, 31, 31, 31, 32, 32, /* 30 - 39 */
1471 32, 32, 32, 33, 33, 33, 33, 33, 34, 34, /* 40 - 49 */
1472 34, 34, 34, 34, 35, 35, 35, 35, 35, 35, /* 50 - 59 */
1473 36, 36, 36, 36, 36, 36, 36, 37, 37, 37, /* 60 - 69 */
1474 37, 37, 37, 37, 37, 38, 38, 38, 38, 38, /* 70 - 79 */
1475 38, 38, 38, 38, 38, 39, 39, 39, 39, 39, /* 80 - 89 */
1476 39, 39, 39, 39, 39, 40, 40, 40, 40, 40 /* 90 - 99 */
1477 };
1478
1479 /* Calculates a relative dB value from a ratio of linear
1480 * (i.e. not dB) signal levels.
1481 * Conversion assumes that levels are voltages (20*log), not powers (10*log). */
1482 int iwl3945_calc_db_from_ratio(int sig_ratio)
1483 {
1484 /* 1000:1 or higher just report as 60 dB */
1485 if (sig_ratio >= 1000)
1486 return 60;
1487
1488 /* 100:1 or higher, divide by 10 and use table,
1489 * add 20 dB to make up for divide by 10 */
1490 if (sig_ratio >= 100)
1491 return 20 + (int)ratio2dB[sig_ratio/10];
1492
1493 /* We shouldn't see this */
1494 if (sig_ratio < 1)
1495 return 0;
1496
1497 /* Use table for ratios 1:1 - 99:1 */
1498 return (int)ratio2dB[sig_ratio];
1499 }
1500
1501 #define PERFECT_RSSI (-20) /* dBm */
1502 #define WORST_RSSI (-95) /* dBm */
1503 #define RSSI_RANGE (PERFECT_RSSI - WORST_RSSI)
1504
1505 /* Calculate an indication of rx signal quality (a percentage, not dBm!).
1506 * See http://www.ces.clemson.edu/linux/signal_quality.shtml for info
1507 * about formulas used below. */
1508 int iwl3945_calc_sig_qual(int rssi_dbm, int noise_dbm)
1509 {
1510 int sig_qual;
1511 int degradation = PERFECT_RSSI - rssi_dbm;
1512
1513 /* If we get a noise measurement, use signal-to-noise ratio (SNR)
1514 * as indicator; formula is (signal dbm - noise dbm).
1515 * SNR at or above 40 is a great signal (100%).
1516 * Below that, scale to fit SNR of 0 - 40 dB within 0 - 100% indicator.
1517 * Weakest usable signal is usually 10 - 15 dB SNR. */
1518 if (noise_dbm) {
1519 if (rssi_dbm - noise_dbm >= 40)
1520 return 100;
1521 else if (rssi_dbm < noise_dbm)
1522 return 0;
1523 sig_qual = ((rssi_dbm - noise_dbm) * 5) / 2;
1524
1525 /* Else use just the signal level.
1526 * This formula is a least squares fit of data points collected and
1527 * compared with a reference system that had a percentage (%) display
1528 * for signal quality. */
1529 } else
1530 sig_qual = (100 * (RSSI_RANGE * RSSI_RANGE) - degradation *
1531 (15 * RSSI_RANGE + 62 * degradation)) /
1532 (RSSI_RANGE * RSSI_RANGE);
1533
1534 if (sig_qual > 100)
1535 sig_qual = 100;
1536 else if (sig_qual < 1)
1537 sig_qual = 0;
1538
1539 return sig_qual;
1540 }
1541
1542 /**
1543 * iwl3945_rx_handle - Main entry function for receiving responses from uCode
1544 *
1545 * Uses the priv->rx_handlers callback function array to invoke
1546 * the appropriate handlers, including command responses,
1547 * frame-received notifications, and other notifications.
1548 */
1549 static void iwl3945_rx_handle(struct iwl_priv *priv)
1550 {
1551 struct iwl_rx_mem_buffer *rxb;
1552 struct iwl_rx_packet *pkt;
1553 struct iwl_rx_queue *rxq = &priv->rxq;
1554 u32 r, i;
1555 int reclaim;
1556 unsigned long flags;
1557 u8 fill_rx = 0;
1558 u32 count = 8;
1559
1560 /* uCode's read index (stored in shared DRAM) indicates the last Rx
1561 * buffer that the driver may process (last buffer filled by ucode). */
1562 r = le16_to_cpu(rxq->rb_stts->closed_rb_num) & 0x0FFF;
1563 i = rxq->read;
1564
1565 if (iwl_rx_queue_space(rxq) > (RX_QUEUE_SIZE / 2))
1566 fill_rx = 1;
1567 /* Rx interrupt, but nothing sent from uCode */
1568 if (i == r)
1569 IWL_DEBUG(priv, IWL_DL_RX | IWL_DL_ISR, "r = %d, i = %d\n", r, i);
1570
1571 while (i != r) {
1572 rxb = rxq->queue[i];
1573
1574 /* If an RXB doesn't have a Rx queue slot associated with it,
1575 * then a bug has been introduced in the queue refilling
1576 * routines -- catch it here */
1577 BUG_ON(rxb == NULL);
1578
1579 rxq->queue[i] = NULL;
1580
1581 pci_unmap_single(priv->pci_dev, rxb->real_dma_addr,
1582 priv->hw_params.rx_buf_size,
1583 PCI_DMA_FROMDEVICE);
1584 pkt = (struct iwl_rx_packet *)rxb->skb->data;
1585
1586 /* Reclaim a command buffer only if this packet is a response
1587 * to a (driver-originated) command.
1588 * If the packet (e.g. Rx frame) originated from uCode,
1589 * there is no command buffer to reclaim.
1590 * Ucode should set SEQ_RX_FRAME bit if ucode-originated,
1591 * but apparently a few don't get set; catch them here. */
1592 reclaim = !(pkt->hdr.sequence & SEQ_RX_FRAME) &&
1593 (pkt->hdr.cmd != STATISTICS_NOTIFICATION) &&
1594 (pkt->hdr.cmd != REPLY_TX);
1595
1596 /* Based on type of command response or notification,
1597 * handle those that need handling via function in
1598 * rx_handlers table. See iwl3945_setup_rx_handlers() */
1599 if (priv->rx_handlers[pkt->hdr.cmd]) {
1600 IWL_DEBUG(priv, IWL_DL_HCMD | IWL_DL_RX | IWL_DL_ISR,
1601 "r = %d, i = %d, %s, 0x%02x\n", r, i,
1602 get_cmd_string(pkt->hdr.cmd), pkt->hdr.cmd);
1603 priv->rx_handlers[pkt->hdr.cmd] (priv, rxb);
1604 priv->isr_stats.rx_handlers[pkt->hdr.cmd]++;
1605 } else {
1606 /* No handling needed */
1607 IWL_DEBUG(priv, IWL_DL_HCMD | IWL_DL_RX | IWL_DL_ISR,
1608 "r %d i %d No handler needed for %s, 0x%02x\n",
1609 r, i, get_cmd_string(pkt->hdr.cmd),
1610 pkt->hdr.cmd);
1611 }
1612
1613 if (reclaim) {
1614 /* Invoke any callbacks, transfer the skb to caller, and
1615 * fire off the (possibly) blocking iwl_send_cmd()
1616 * as we reclaim the driver command queue */
1617 if (rxb && rxb->skb)
1618 iwl_tx_cmd_complete(priv, rxb);
1619 else
1620 IWL_WARN(priv, "Claim null rxb?\n");
1621 }
1622
1623 /* For now we just don't re-use anything. We can tweak this
1624 * later to try and re-use notification packets and SKBs that
1625 * fail to Rx correctly */
1626 if (rxb->skb != NULL) {
1627 priv->alloc_rxb_skb--;
1628 dev_kfree_skb_any(rxb->skb);
1629 rxb->skb = NULL;
1630 }
1631
1632 spin_lock_irqsave(&rxq->lock, flags);
1633 list_add_tail(&rxb->list, &priv->rxq.rx_used);
1634 spin_unlock_irqrestore(&rxq->lock, flags);
1635 i = (i + 1) & RX_QUEUE_MASK;
1636 /* If there are a lot of unused frames,
1637 * restock the Rx queue so ucode won't assert. */
1638 if (fill_rx) {
1639 count++;
1640 if (count >= 8) {
1641 priv->rxq.read = i;
1642 iwl3945_rx_queue_restock(priv);
1643 count = 0;
1644 }
1645 }
1646 }
1647
1648 /* Backtrack one entry */
1649 priv->rxq.read = i;
1650 iwl3945_rx_queue_restock(priv);
1651 }
1652
1653 /* call this function to flush any scheduled tasklet */
1654 static inline void iwl_synchronize_irq(struct iwl_priv *priv)
1655 {
1656 /* wait to make sure we flush pending tasklet*/
1657 synchronize_irq(priv->pci_dev->irq);
1658 tasklet_kill(&priv->irq_tasklet);
1659 }
1660
1661 static const char *desc_lookup(int i)
1662 {
1663 switch (i) {
1664 case 1:
1665 return "FAIL";
1666 case 2:
1667 return "BAD_PARAM";
1668 case 3:
1669 return "BAD_CHECKSUM";
1670 case 4:
1671 return "NMI_INTERRUPT";
1672 case 5:
1673 return "SYSASSERT";
1674 case 6:
1675 return "FATAL_ERROR";
1676 }
1677
1678 return "UNKNOWN";
1679 }
1680
1681 #define ERROR_START_OFFSET (1 * sizeof(u32))
1682 #define ERROR_ELEM_SIZE (7 * sizeof(u32))
1683
1684 static void iwl3945_dump_nic_error_log(struct iwl_priv *priv)
1685 {
1686 u32 i;
1687 u32 desc, time, count, base, data1;
1688 u32 blink1, blink2, ilink1, ilink2;
1689
1690 base = le32_to_cpu(priv->card_alive.error_event_table_ptr);
1691
1692 if (!iwl3945_hw_valid_rtc_data_addr(base)) {
1693 IWL_ERR(priv, "Not valid error log pointer 0x%08X\n", base);
1694 return;
1695 }
1696
1697
1698 count = iwl_read_targ_mem(priv, base);
1699
1700 if (ERROR_START_OFFSET <= count * ERROR_ELEM_SIZE) {
1701 IWL_ERR(priv, "Start IWL Error Log Dump:\n");
1702 IWL_ERR(priv, "Status: 0x%08lX, count: %d\n",
1703 priv->status, count);
1704 }
1705
1706 IWL_ERR(priv, "Desc Time asrtPC blink2 "
1707 "ilink1 nmiPC Line\n");
1708 for (i = ERROR_START_OFFSET;
1709 i < (count * ERROR_ELEM_SIZE) + ERROR_START_OFFSET;
1710 i += ERROR_ELEM_SIZE) {
1711 desc = iwl_read_targ_mem(priv, base + i);
1712 time =
1713 iwl_read_targ_mem(priv, base + i + 1 * sizeof(u32));
1714 blink1 =
1715 iwl_read_targ_mem(priv, base + i + 2 * sizeof(u32));
1716 blink2 =
1717 iwl_read_targ_mem(priv, base + i + 3 * sizeof(u32));
1718 ilink1 =
1719 iwl_read_targ_mem(priv, base + i + 4 * sizeof(u32));
1720 ilink2 =
1721 iwl_read_targ_mem(priv, base + i + 5 * sizeof(u32));
1722 data1 =
1723 iwl_read_targ_mem(priv, base + i + 6 * sizeof(u32));
1724
1725 IWL_ERR(priv,
1726 "%-13s (#%d) %010u 0x%05X 0x%05X 0x%05X 0x%05X %u\n\n",
1727 desc_lookup(desc), desc, time, blink1, blink2,
1728 ilink1, ilink2, data1);
1729 }
1730
1731 }
1732
1733 #define EVENT_START_OFFSET (6 * sizeof(u32))
1734
1735 /**
1736 * iwl3945_print_event_log - Dump error event log to syslog
1737 *
1738 */
1739 static void iwl3945_print_event_log(struct iwl_priv *priv, u32 start_idx,
1740 u32 num_events, u32 mode)
1741 {
1742 u32 i;
1743 u32 base; /* SRAM byte address of event log header */
1744 u32 event_size; /* 2 u32s, or 3 u32s if timestamp recorded */
1745 u32 ptr; /* SRAM byte address of log data */
1746 u32 ev, time, data; /* event log data */
1747
1748 if (num_events == 0)
1749 return;
1750
1751 base = le32_to_cpu(priv->card_alive.log_event_table_ptr);
1752
1753 if (mode == 0)
1754 event_size = 2 * sizeof(u32);
1755 else
1756 event_size = 3 * sizeof(u32);
1757
1758 ptr = base + EVENT_START_OFFSET + (start_idx * event_size);
1759
1760 /* "time" is actually "data" for mode 0 (no timestamp).
1761 * place event id # at far right for easier visual parsing. */
1762 for (i = 0; i < num_events; i++) {
1763 ev = iwl_read_targ_mem(priv, ptr);
1764 ptr += sizeof(u32);
1765 time = iwl_read_targ_mem(priv, ptr);
1766 ptr += sizeof(u32);
1767 if (mode == 0) {
1768 /* data, ev */
1769 IWL_ERR(priv, "0x%08x\t%04u\n", time, ev);
1770 } else {
1771 data = iwl_read_targ_mem(priv, ptr);
1772 ptr += sizeof(u32);
1773 IWL_ERR(priv, "%010u\t0x%08x\t%04u\n", time, data, ev);
1774 }
1775 }
1776 }
1777
1778 static void iwl3945_dump_nic_event_log(struct iwl_priv *priv)
1779 {
1780 u32 base; /* SRAM byte address of event log header */
1781 u32 capacity; /* event log capacity in # entries */
1782 u32 mode; /* 0 - no timestamp, 1 - timestamp recorded */
1783 u32 num_wraps; /* # times uCode wrapped to top of log */
1784 u32 next_entry; /* index of next entry to be written by uCode */
1785 u32 size; /* # entries that we'll print */
1786
1787 base = le32_to_cpu(priv->card_alive.log_event_table_ptr);
1788 if (!iwl3945_hw_valid_rtc_data_addr(base)) {
1789 IWL_ERR(priv, "Invalid event log pointer 0x%08X\n", base);
1790 return;
1791 }
1792
1793 /* event log header */
1794 capacity = iwl_read_targ_mem(priv, base);
1795 mode = iwl_read_targ_mem(priv, base + (1 * sizeof(u32)));
1796 num_wraps = iwl_read_targ_mem(priv, base + (2 * sizeof(u32)));
1797 next_entry = iwl_read_targ_mem(priv, base + (3 * sizeof(u32)));
1798
1799 size = num_wraps ? capacity : next_entry;
1800
1801 /* bail out if nothing in log */
1802 if (size == 0) {
1803 IWL_ERR(priv, "Start IWL Event Log Dump: nothing in log\n");
1804 return;
1805 }
1806
1807 IWL_ERR(priv, "Start IWL Event Log Dump: display count %d, wraps %d\n",
1808 size, num_wraps);
1809
1810 /* if uCode has wrapped back to top of log, start at the oldest entry,
1811 * i.e the next one that uCode would fill. */
1812 if (num_wraps)
1813 iwl3945_print_event_log(priv, next_entry,
1814 capacity - next_entry, mode);
1815
1816 /* (then/else) start at top of log */
1817 iwl3945_print_event_log(priv, 0, next_entry, mode);
1818
1819 }
1820
1821 static void iwl3945_irq_tasklet(struct iwl_priv *priv)
1822 {
1823 u32 inta, handled = 0;
1824 u32 inta_fh;
1825 unsigned long flags;
1826 #ifdef CONFIG_IWLWIFI_DEBUG
1827 u32 inta_mask;
1828 #endif
1829
1830 spin_lock_irqsave(&priv->lock, flags);
1831
1832 /* Ack/clear/reset pending uCode interrupts.
1833 * Note: Some bits in CSR_INT are "OR" of bits in CSR_FH_INT_STATUS,
1834 * and will clear only when CSR_FH_INT_STATUS gets cleared. */
1835 inta = iwl_read32(priv, CSR_INT);
1836 iwl_write32(priv, CSR_INT, inta);
1837
1838 /* Ack/clear/reset pending flow-handler (DMA) interrupts.
1839 * Any new interrupts that happen after this, either while we're
1840 * in this tasklet, or later, will show up in next ISR/tasklet. */
1841 inta_fh = iwl_read32(priv, CSR_FH_INT_STATUS);
1842 iwl_write32(priv, CSR_FH_INT_STATUS, inta_fh);
1843
1844 #ifdef CONFIG_IWLWIFI_DEBUG
1845 if (priv->debug_level & IWL_DL_ISR) {
1846 /* just for debug */
1847 inta_mask = iwl_read32(priv, CSR_INT_MASK);
1848 IWL_DEBUG_ISR(priv, "inta 0x%08x, enabled 0x%08x, fh 0x%08x\n",
1849 inta, inta_mask, inta_fh);
1850 }
1851 #endif
1852
1853 /* Since CSR_INT and CSR_FH_INT_STATUS reads and clears are not
1854 * atomic, make sure that inta covers all the interrupts that
1855 * we've discovered, even if FH interrupt came in just after
1856 * reading CSR_INT. */
1857 if (inta_fh & CSR39_FH_INT_RX_MASK)
1858 inta |= CSR_INT_BIT_FH_RX;
1859 if (inta_fh & CSR39_FH_INT_TX_MASK)
1860 inta |= CSR_INT_BIT_FH_TX;
1861
1862 /* Now service all interrupt bits discovered above. */
1863 if (inta & CSR_INT_BIT_HW_ERR) {
1864 IWL_ERR(priv, "Microcode HW error detected. Restarting.\n");
1865
1866 /* Tell the device to stop sending interrupts */
1867 iwl_disable_interrupts(priv);
1868
1869 priv->isr_stats.hw++;
1870 iwl_irq_handle_error(priv);
1871
1872 handled |= CSR_INT_BIT_HW_ERR;
1873
1874 spin_unlock_irqrestore(&priv->lock, flags);
1875
1876 return;
1877 }
1878
1879 #ifdef CONFIG_IWLWIFI_DEBUG
1880 if (priv->debug_level & (IWL_DL_ISR)) {
1881 /* NIC fires this, but we don't use it, redundant with WAKEUP */
1882 if (inta & CSR_INT_BIT_SCD) {
1883 IWL_DEBUG_ISR(priv, "Scheduler finished to transmit "
1884 "the frame/frames.\n");
1885 priv->isr_stats.sch++;
1886 }
1887
1888 /* Alive notification via Rx interrupt will do the real work */
1889 if (inta & CSR_INT_BIT_ALIVE) {
1890 IWL_DEBUG_ISR(priv, "Alive interrupt\n");
1891 priv->isr_stats.alive++;
1892 }
1893 }
1894 #endif
1895 /* Safely ignore these bits for debug checks below */
1896 inta &= ~(CSR_INT_BIT_SCD | CSR_INT_BIT_ALIVE);
1897
1898 /* Error detected by uCode */
1899 if (inta & CSR_INT_BIT_SW_ERR) {
1900 IWL_ERR(priv, "Microcode SW error detected. "
1901 "Restarting 0x%X.\n", inta);
1902 priv->isr_stats.sw++;
1903 priv->isr_stats.sw_err = inta;
1904 iwl_irq_handle_error(priv);
1905 handled |= CSR_INT_BIT_SW_ERR;
1906 }
1907
1908 /* uCode wakes up after power-down sleep */
1909 if (inta & CSR_INT_BIT_WAKEUP) {
1910 IWL_DEBUG_ISR(priv, "Wakeup interrupt\n");
1911 iwl_rx_queue_update_write_ptr(priv, &priv->rxq);
1912 iwl_txq_update_write_ptr(priv, &priv->txq[0]);
1913 iwl_txq_update_write_ptr(priv, &priv->txq[1]);
1914 iwl_txq_update_write_ptr(priv, &priv->txq[2]);
1915 iwl_txq_update_write_ptr(priv, &priv->txq[3]);
1916 iwl_txq_update_write_ptr(priv, &priv->txq[4]);
1917 iwl_txq_update_write_ptr(priv, &priv->txq[5]);
1918
1919 priv->isr_stats.wakeup++;
1920 handled |= CSR_INT_BIT_WAKEUP;
1921 }
1922
1923 /* All uCode command responses, including Tx command responses,
1924 * Rx "responses" (frame-received notification), and other
1925 * notifications from uCode come through here*/
1926 if (inta & (CSR_INT_BIT_FH_RX | CSR_INT_BIT_SW_RX)) {
1927 iwl3945_rx_handle(priv);
1928 priv->isr_stats.rx++;
1929 handled |= (CSR_INT_BIT_FH_RX | CSR_INT_BIT_SW_RX);
1930 }
1931
1932 if (inta & CSR_INT_BIT_FH_TX) {
1933 IWL_DEBUG_ISR(priv, "Tx interrupt\n");
1934 priv->isr_stats.tx++;
1935
1936 iwl_write32(priv, CSR_FH_INT_STATUS, (1 << 6));
1937 iwl_write_direct32(priv, FH39_TCSR_CREDIT
1938 (FH39_SRVC_CHNL), 0x0);
1939 handled |= CSR_INT_BIT_FH_TX;
1940 }
1941
1942 if (inta & ~handled) {
1943 IWL_ERR(priv, "Unhandled INTA bits 0x%08x\n", inta & ~handled);
1944 priv->isr_stats.unhandled++;
1945 }
1946
1947 if (inta & ~priv->inta_mask) {
1948 IWL_WARN(priv, "Disabled INTA bits 0x%08x were pending\n",
1949 inta & ~priv->inta_mask);
1950 IWL_WARN(priv, " with FH_INT = 0x%08x\n", inta_fh);
1951 }
1952
1953 /* Re-enable all interrupts */
1954 /* only Re-enable if disabled by irq */
1955 if (test_bit(STATUS_INT_ENABLED, &priv->status))
1956 iwl_enable_interrupts(priv);
1957
1958 #ifdef CONFIG_IWLWIFI_DEBUG
1959 if (priv->debug_level & (IWL_DL_ISR)) {
1960 inta = iwl_read32(priv, CSR_INT);
1961 inta_mask = iwl_read32(priv, CSR_INT_MASK);
1962 inta_fh = iwl_read32(priv, CSR_FH_INT_STATUS);
1963 IWL_DEBUG_ISR(priv, "End inta 0x%08x, enabled 0x%08x, fh 0x%08x, "
1964 "flags 0x%08lx\n", inta, inta_mask, inta_fh, flags);
1965 }
1966 #endif
1967 spin_unlock_irqrestore(&priv->lock, flags);
1968 }
1969
1970 static int iwl3945_get_channels_for_scan(struct iwl_priv *priv,
1971 enum ieee80211_band band,
1972 u8 is_active, u8 n_probes,
1973 struct iwl3945_scan_channel *scan_ch)
1974 {
1975 const struct ieee80211_channel *channels = NULL;
1976 const struct ieee80211_supported_band *sband;
1977 const struct iwl_channel_info *ch_info;
1978 u16 passive_dwell = 0;
1979 u16 active_dwell = 0;
1980 int added, i;
1981
1982 sband = iwl_get_hw_mode(priv, band);
1983 if (!sband)
1984 return 0;
1985
1986 channels = sband->channels;
1987
1988 active_dwell = iwl_get_active_dwell_time(priv, band, n_probes);
1989 passive_dwell = iwl_get_passive_dwell_time(priv, band);
1990
1991 if (passive_dwell <= active_dwell)
1992 passive_dwell = active_dwell + 1;
1993
1994 for (i = 0, added = 0; i < sband->n_channels; i++) {
1995 if (channels[i].flags & IEEE80211_CHAN_DISABLED)
1996 continue;
1997
1998 scan_ch->channel = channels[i].hw_value;
1999
2000 ch_info = iwl_get_channel_info(priv, band, scan_ch->channel);
2001 if (!is_channel_valid(ch_info)) {
2002 IWL_DEBUG_SCAN(priv, "Channel %d is INVALID for this band.\n",
2003 scan_ch->channel);
2004 continue;
2005 }
2006
2007 scan_ch->active_dwell = cpu_to_le16(active_dwell);
2008 scan_ch->passive_dwell = cpu_to_le16(passive_dwell);
2009 /* If passive , set up for auto-switch
2010 * and use long active_dwell time.
2011 */
2012 if (!is_active || is_channel_passive(ch_info) ||
2013 (channels[i].flags & IEEE80211_CHAN_PASSIVE_SCAN)) {
2014 scan_ch->type = 0; /* passive */
2015 if (IWL_UCODE_API(priv->ucode_ver) == 1)
2016 scan_ch->active_dwell = cpu_to_le16(passive_dwell - 1);
2017 } else {
2018 scan_ch->type = 1; /* active */
2019 }
2020
2021 /* Set direct probe bits. These may be used both for active
2022 * scan channels (probes gets sent right away),
2023 * or for passive channels (probes get se sent only after
2024 * hearing clear Rx packet).*/
2025 if (IWL_UCODE_API(priv->ucode_ver) >= 2) {
2026 if (n_probes)
2027 scan_ch->type |= IWL39_SCAN_PROBE_MASK(n_probes);
2028 } else {
2029 /* uCode v1 does not allow setting direct probe bits on
2030 * passive channel. */
2031 if ((scan_ch->type & 1) && n_probes)
2032 scan_ch->type |= IWL39_SCAN_PROBE_MASK(n_probes);
2033 }
2034
2035 /* Set txpower levels to defaults */
2036 scan_ch->tpc.dsp_atten = 110;
2037 /* scan_pwr_info->tpc.dsp_atten; */
2038
2039 /*scan_pwr_info->tpc.tx_gain; */
2040 if (band == IEEE80211_BAND_5GHZ)
2041 scan_ch->tpc.tx_gain = ((1 << 5) | (3 << 3)) | 3;
2042 else {
2043 scan_ch->tpc.tx_gain = ((1 << 5) | (5 << 3));
2044 /* NOTE: if we were doing 6Mb OFDM for scans we'd use
2045 * power level:
2046 * scan_ch->tpc.tx_gain = ((1 << 5) | (2 << 3)) | 3;
2047 */
2048 }
2049
2050 IWL_DEBUG_SCAN(priv, "Scanning %d [%s %d]\n",
2051 scan_ch->channel,
2052 (scan_ch->type & 1) ? "ACTIVE" : "PASSIVE",
2053 (scan_ch->type & 1) ?
2054 active_dwell : passive_dwell);
2055
2056 scan_ch++;
2057 added++;
2058 }
2059
2060 IWL_DEBUG_SCAN(priv, "total channels to scan %d \n", added);
2061 return added;
2062 }
2063
2064 static void iwl3945_init_hw_rates(struct iwl_priv *priv,
2065 struct ieee80211_rate *rates)
2066 {
2067 int i;
2068
2069 for (i = 0; i < IWL_RATE_COUNT; i++) {
2070 rates[i].bitrate = iwl3945_rates[i].ieee * 5;
2071 rates[i].hw_value = i; /* Rate scaling will work on indexes */
2072 rates[i].hw_value_short = i;
2073 rates[i].flags = 0;
2074 if ((i > IWL39_LAST_OFDM_RATE) || (i < IWL_FIRST_OFDM_RATE)) {
2075 /*
2076 * If CCK != 1M then set short preamble rate flag.
2077 */
2078 rates[i].flags |= (iwl3945_rates[i].plcp == 10) ?
2079 0 : IEEE80211_RATE_SHORT_PREAMBLE;
2080 }
2081 }
2082 }
2083
2084 /******************************************************************************
2085 *
2086 * uCode download functions
2087 *
2088 ******************************************************************************/
2089
2090 static void iwl3945_dealloc_ucode_pci(struct iwl_priv *priv)
2091 {
2092 iwl_free_fw_desc(priv->pci_dev, &priv->ucode_code);
2093 iwl_free_fw_desc(priv->pci_dev, &priv->ucode_data);
2094 iwl_free_fw_desc(priv->pci_dev, &priv->ucode_data_backup);
2095 iwl_free_fw_desc(priv->pci_dev, &priv->ucode_init);
2096 iwl_free_fw_desc(priv->pci_dev, &priv->ucode_init_data);
2097 iwl_free_fw_desc(priv->pci_dev, &priv->ucode_boot);
2098 }
2099
2100 /**
2101 * iwl3945_verify_inst_full - verify runtime uCode image in card vs. host,
2102 * looking at all data.
2103 */
2104 static int iwl3945_verify_inst_full(struct iwl_priv *priv, __le32 *image, u32 len)
2105 {
2106 u32 val;
2107 u32 save_len = len;
2108 int rc = 0;
2109 u32 errcnt;
2110
2111 IWL_DEBUG_INFO(priv, "ucode inst image size is %u\n", len);
2112
2113 iwl_write_direct32(priv, HBUS_TARG_MEM_RADDR,
2114 IWL39_RTC_INST_LOWER_BOUND);
2115
2116 errcnt = 0;
2117 for (; len > 0; len -= sizeof(u32), image++) {
2118 /* read data comes through single port, auto-incr addr */
2119 /* NOTE: Use the debugless read so we don't flood kernel log
2120 * if IWL_DL_IO is set */
2121 val = _iwl_read_direct32(priv, HBUS_TARG_MEM_RDAT);
2122 if (val != le32_to_cpu(*image)) {
2123 IWL_ERR(priv, "uCode INST section is invalid at "
2124 "offset 0x%x, is 0x%x, s/b 0x%x\n",
2125 save_len - len, val, le32_to_cpu(*image));
2126 rc = -EIO;
2127 errcnt++;
2128 if (errcnt >= 20)
2129 break;
2130 }
2131 }
2132
2133
2134 if (!errcnt)
2135 IWL_DEBUG_INFO(priv,
2136 "ucode image in INSTRUCTION memory is good\n");
2137
2138 return rc;
2139 }
2140
2141
2142 /**
2143 * iwl3945_verify_inst_sparse - verify runtime uCode image in card vs. host,
2144 * using sample data 100 bytes apart. If these sample points are good,
2145 * it's a pretty good bet that everything between them is good, too.
2146 */
2147 static int iwl3945_verify_inst_sparse(struct iwl_priv *priv, __le32 *image, u32 len)
2148 {
2149 u32 val;
2150 int rc = 0;
2151 u32 errcnt = 0;
2152 u32 i;
2153
2154 IWL_DEBUG_INFO(priv, "ucode inst image size is %u\n", len);
2155
2156 for (i = 0; i < len; i += 100, image += 100/sizeof(u32)) {
2157 /* read data comes through single port, auto-incr addr */
2158 /* NOTE: Use the debugless read so we don't flood kernel log
2159 * if IWL_DL_IO is set */
2160 iwl_write_direct32(priv, HBUS_TARG_MEM_RADDR,
2161 i + IWL39_RTC_INST_LOWER_BOUND);
2162 val = _iwl_read_direct32(priv, HBUS_TARG_MEM_RDAT);
2163 if (val != le32_to_cpu(*image)) {
2164 #if 0 /* Enable this if you want to see details */
2165 IWL_ERR(priv, "uCode INST section is invalid at "
2166 "offset 0x%x, is 0x%x, s/b 0x%x\n",
2167 i, val, *image);
2168 #endif
2169 rc = -EIO;
2170 errcnt++;
2171 if (errcnt >= 3)
2172 break;
2173 }
2174 }
2175
2176 return rc;
2177 }
2178
2179
2180 /**
2181 * iwl3945_verify_ucode - determine which instruction image is in SRAM,
2182 * and verify its contents
2183 */
2184 static int iwl3945_verify_ucode(struct iwl_priv *priv)
2185 {
2186 __le32 *image;
2187 u32 len;
2188 int rc = 0;
2189
2190 /* Try bootstrap */
2191 image = (__le32 *)priv->ucode_boot.v_addr;
2192 len = priv->ucode_boot.len;
2193 rc = iwl3945_verify_inst_sparse(priv, image, len);
2194 if (rc == 0) {
2195 IWL_DEBUG_INFO(priv, "Bootstrap uCode is good in inst SRAM\n");
2196 return 0;
2197 }
2198
2199 /* Try initialize */
2200 image = (__le32 *)priv->ucode_init.v_addr;
2201 len = priv->ucode_init.len;
2202 rc = iwl3945_verify_inst_sparse(priv, image, len);
2203 if (rc == 0) {
2204 IWL_DEBUG_INFO(priv, "Initialize uCode is good in inst SRAM\n");
2205 return 0;
2206 }
2207
2208 /* Try runtime/protocol */
2209 image = (__le32 *)priv->ucode_code.v_addr;
2210 len = priv->ucode_code.len;
2211 rc = iwl3945_verify_inst_sparse(priv, image, len);
2212 if (rc == 0) {
2213 IWL_DEBUG_INFO(priv, "Runtime uCode is good in inst SRAM\n");
2214 return 0;
2215 }
2216
2217 IWL_ERR(priv, "NO VALID UCODE IMAGE IN INSTRUCTION SRAM!!\n");
2218
2219 /* Since nothing seems to match, show first several data entries in
2220 * instruction SRAM, so maybe visual inspection will give a clue.
2221 * Selection of bootstrap image (vs. other images) is arbitrary. */
2222 image = (__le32 *)priv->ucode_boot.v_addr;
2223 len = priv->ucode_boot.len;
2224 rc = iwl3945_verify_inst_full(priv, image, len);
2225
2226 return rc;
2227 }
2228
2229 static void iwl3945_nic_start(struct iwl_priv *priv)
2230 {
2231 /* Remove all resets to allow NIC to operate */
2232 iwl_write32(priv, CSR_RESET, 0);
2233 }
2234
2235 /**
2236 * iwl3945_read_ucode - Read uCode images from disk file.
2237 *
2238 * Copy into buffers for card to fetch via bus-mastering
2239 */
2240 static int iwl3945_read_ucode(struct iwl_priv *priv)
2241 {
2242 struct iwl_ucode *ucode;
2243 int ret = -EINVAL, index;
2244 const struct firmware *ucode_raw;
2245 /* firmware file name contains uCode/driver compatibility version */
2246 const char *name_pre = priv->cfg->fw_name_pre;
2247 const unsigned int api_max = priv->cfg->ucode_api_max;
2248 const unsigned int api_min = priv->cfg->ucode_api_min;
2249 char buf[25];
2250 u8 *src;
2251 size_t len;
2252 u32 api_ver, inst_size, data_size, init_size, init_data_size, boot_size;
2253
2254 /* Ask kernel firmware_class module to get the boot firmware off disk.
2255 * request_firmware() is synchronous, file is in memory on return. */
2256 for (index = api_max; index >= api_min; index--) {
2257 sprintf(buf, "%s%u%s", name_pre, index, ".ucode");
2258 ret = request_firmware(&ucode_raw, buf, &priv->pci_dev->dev);
2259 if (ret < 0) {
2260 IWL_ERR(priv, "%s firmware file req failed: %d\n",
2261 buf, ret);
2262 if (ret == -ENOENT)
2263 continue;
2264 else
2265 goto error;
2266 } else {
2267 if (index < api_max)
2268 IWL_ERR(priv, "Loaded firmware %s, "
2269 "which is deprecated. "
2270 " Please use API v%u instead.\n",
2271 buf, api_max);
2272 IWL_DEBUG_INFO(priv, "Got firmware '%s' file "
2273 "(%zd bytes) from disk\n",
2274 buf, ucode_raw->size);
2275 break;
2276 }
2277 }
2278
2279 if (ret < 0)
2280 goto error;
2281
2282 /* Make sure that we got at least our header! */
2283 if (ucode_raw->size < sizeof(*ucode)) {
2284 IWL_ERR(priv, "File size way too small!\n");
2285 ret = -EINVAL;
2286 goto err_release;
2287 }
2288
2289 /* Data from ucode file: header followed by uCode images */
2290 ucode = (void *)ucode_raw->data;
2291
2292 priv->ucode_ver = le32_to_cpu(ucode->ver);
2293 api_ver = IWL_UCODE_API(priv->ucode_ver);
2294 inst_size = le32_to_cpu(ucode->inst_size);
2295 data_size = le32_to_cpu(ucode->data_size);
2296 init_size = le32_to_cpu(ucode->init_size);
2297 init_data_size = le32_to_cpu(ucode->init_data_size);
2298 boot_size = le32_to_cpu(ucode->boot_size);
2299
2300 /* api_ver should match the api version forming part of the
2301 * firmware filename ... but we don't check for that and only rely
2302 * on the API version read from firmware header from here on forward */
2303
2304 if (api_ver < api_min || api_ver > api_max) {
2305 IWL_ERR(priv, "Driver unable to support your firmware API. "
2306 "Driver supports v%u, firmware is v%u.\n",
2307 api_max, api_ver);
2308 priv->ucode_ver = 0;
2309 ret = -EINVAL;
2310 goto err_release;
2311 }
2312 if (api_ver != api_max)
2313 IWL_ERR(priv, "Firmware has old API version. Expected %u, "
2314 "got %u. New firmware can be obtained "
2315 "from http://www.intellinuxwireless.org.\n",
2316 api_max, api_ver);
2317
2318 IWL_INFO(priv, "loaded firmware version %u.%u.%u.%u\n",
2319 IWL_UCODE_MAJOR(priv->ucode_ver),
2320 IWL_UCODE_MINOR(priv->ucode_ver),
2321 IWL_UCODE_API(priv->ucode_ver),
2322 IWL_UCODE_SERIAL(priv->ucode_ver));
2323
2324 IWL_DEBUG_INFO(priv, "f/w package hdr ucode version raw = 0x%x\n",
2325 priv->ucode_ver);
2326 IWL_DEBUG_INFO(priv, "f/w package hdr runtime inst size = %u\n",
2327 inst_size);
2328 IWL_DEBUG_INFO(priv, "f/w package hdr runtime data size = %u\n",
2329 data_size);
2330 IWL_DEBUG_INFO(priv, "f/w package hdr init inst size = %u\n",
2331 init_size);
2332 IWL_DEBUG_INFO(priv, "f/w package hdr init data size = %u\n",
2333 init_data_size);
2334 IWL_DEBUG_INFO(priv, "f/w package hdr boot inst size = %u\n",
2335 boot_size);
2336
2337
2338 /* Verify size of file vs. image size info in file's header */
2339 if (ucode_raw->size < sizeof(*ucode) +
2340 inst_size + data_size + init_size +
2341 init_data_size + boot_size) {
2342
2343 IWL_DEBUG_INFO(priv, "uCode file size %zd too small\n",
2344 ucode_raw->size);
2345 ret = -EINVAL;
2346 goto err_release;
2347 }
2348
2349 /* Verify that uCode images will fit in card's SRAM */
2350 if (inst_size > IWL39_MAX_INST_SIZE) {
2351 IWL_DEBUG_INFO(priv, "uCode instr len %d too large to fit in\n",
2352 inst_size);
2353 ret = -EINVAL;
2354 goto err_release;
2355 }
2356
2357 if (data_size > IWL39_MAX_DATA_SIZE) {
2358 IWL_DEBUG_INFO(priv, "uCode data len %d too large to fit in\n",
2359 data_size);
2360 ret = -EINVAL;
2361 goto err_release;
2362 }
2363 if (init_size > IWL39_MAX_INST_SIZE) {
2364 IWL_DEBUG_INFO(priv,
2365 "uCode init instr len %d too large to fit in\n",
2366 init_size);
2367 ret = -EINVAL;
2368 goto err_release;
2369 }
2370 if (init_data_size > IWL39_MAX_DATA_SIZE) {
2371 IWL_DEBUG_INFO(priv,
2372 "uCode init data len %d too large to fit in\n",
2373 init_data_size);
2374 ret = -EINVAL;
2375 goto err_release;
2376 }
2377 if (boot_size > IWL39_MAX_BSM_SIZE) {
2378 IWL_DEBUG_INFO(priv,
2379 "uCode boot instr len %d too large to fit in\n",
2380 boot_size);
2381 ret = -EINVAL;
2382 goto err_release;
2383 }
2384
2385 /* Allocate ucode buffers for card's bus-master loading ... */
2386
2387 /* Runtime instructions and 2 copies of data:
2388 * 1) unmodified from disk
2389 * 2) backup cache for save/restore during power-downs */
2390 priv->ucode_code.len = inst_size;
2391 iwl_alloc_fw_desc(priv->pci_dev, &priv->ucode_code);
2392
2393 priv->ucode_data.len = data_size;
2394 iwl_alloc_fw_desc(priv->pci_dev, &priv->ucode_data);
2395
2396 priv->ucode_data_backup.len = data_size;
2397 iwl_alloc_fw_desc(priv->pci_dev, &priv->ucode_data_backup);
2398
2399 if (!priv->ucode_code.v_addr || !priv->ucode_data.v_addr ||
2400 !priv->ucode_data_backup.v_addr)
2401 goto err_pci_alloc;
2402
2403 /* Initialization instructions and data */
2404 if (init_size && init_data_size) {
2405 priv->ucode_init.len = init_size;
2406 iwl_alloc_fw_desc(priv->pci_dev, &priv->ucode_init);
2407
2408 priv->ucode_init_data.len = init_data_size;
2409 iwl_alloc_fw_desc(priv->pci_dev, &priv->ucode_init_data);
2410
2411 if (!priv->ucode_init.v_addr || !priv->ucode_init_data.v_addr)
2412 goto err_pci_alloc;
2413 }
2414
2415 /* Bootstrap (instructions only, no data) */
2416 if (boot_size) {
2417 priv->ucode_boot.len = boot_size;
2418 iwl_alloc_fw_desc(priv->pci_dev, &priv->ucode_boot);
2419
2420 if (!priv->ucode_boot.v_addr)
2421 goto err_pci_alloc;
2422 }
2423
2424 /* Copy images into buffers for card's bus-master reads ... */
2425
2426 /* Runtime instructions (first block of data in file) */
2427 src = &ucode->data[0];
2428 len = priv->ucode_code.len;
2429 IWL_DEBUG_INFO(priv,
2430 "Copying (but not loading) uCode instr len %zd\n", len);
2431 memcpy(priv->ucode_code.v_addr, src, len);
2432 IWL_DEBUG_INFO(priv, "uCode instr buf vaddr = 0x%p, paddr = 0x%08x\n",
2433 priv->ucode_code.v_addr, (u32)priv->ucode_code.p_addr);
2434
2435 /* Runtime data (2nd block)
2436 * NOTE: Copy into backup buffer will be done in iwl3945_up() */
2437 src = &ucode->data[inst_size];
2438 len = priv->ucode_data.len;
2439 IWL_DEBUG_INFO(priv,
2440 "Copying (but not loading) uCode data len %zd\n", len);
2441 memcpy(priv->ucode_data.v_addr, src, len);
2442 memcpy(priv->ucode_data_backup.v_addr, src, len);
2443
2444 /* Initialization instructions (3rd block) */
2445 if (init_size) {
2446 src = &ucode->data[inst_size + data_size];
2447 len = priv->ucode_init.len;
2448 IWL_DEBUG_INFO(priv,
2449 "Copying (but not loading) init instr len %zd\n", len);
2450 memcpy(priv->ucode_init.v_addr, src, len);
2451 }
2452
2453 /* Initialization data (4th block) */
2454 if (init_data_size) {
2455 src = &ucode->data[inst_size + data_size + init_size];
2456 len = priv->ucode_init_data.len;
2457 IWL_DEBUG_INFO(priv,
2458 "Copying (but not loading) init data len %zd\n", len);
2459 memcpy(priv->ucode_init_data.v_addr, src, len);
2460 }
2461
2462 /* Bootstrap instructions (5th block) */
2463 src = &ucode->data[inst_size + data_size + init_size + init_data_size];
2464 len = priv->ucode_boot.len;
2465 IWL_DEBUG_INFO(priv,
2466 "Copying (but not loading) boot instr len %zd\n", len);
2467 memcpy(priv->ucode_boot.v_addr, src, len);
2468
2469 /* We have our copies now, allow OS release its copies */
2470 release_firmware(ucode_raw);
2471 return 0;
2472
2473 err_pci_alloc:
2474 IWL_ERR(priv, "failed to allocate pci memory\n");
2475 ret = -ENOMEM;
2476 iwl3945_dealloc_ucode_pci(priv);
2477
2478 err_release:
2479 release_firmware(ucode_raw);
2480
2481 error:
2482 return ret;
2483 }
2484
2485
2486 /**
2487 * iwl3945_set_ucode_ptrs - Set uCode address location
2488 *
2489 * Tell initialization uCode where to find runtime uCode.
2490 *
2491 * BSM registers initially contain pointers to initialization uCode.
2492 * We need to replace them to load runtime uCode inst and data,
2493 * and to save runtime data when powering down.
2494 */
2495 static int iwl3945_set_ucode_ptrs(struct iwl_priv *priv)
2496 {
2497 dma_addr_t pinst;
2498 dma_addr_t pdata;
2499
2500 /* bits 31:0 for 3945 */
2501 pinst = priv->ucode_code.p_addr;
2502 pdata = priv->ucode_data_backup.p_addr;
2503
2504 /* Tell bootstrap uCode where to find image to load */
2505 iwl_write_prph(priv, BSM_DRAM_INST_PTR_REG, pinst);
2506 iwl_write_prph(priv, BSM_DRAM_DATA_PTR_REG, pdata);
2507 iwl_write_prph(priv, BSM_DRAM_DATA_BYTECOUNT_REG,
2508 priv->ucode_data.len);
2509
2510 /* Inst byte count must be last to set up, bit 31 signals uCode
2511 * that all new ptr/size info is in place */
2512 iwl_write_prph(priv, BSM_DRAM_INST_BYTECOUNT_REG,
2513 priv->ucode_code.len | BSM_DRAM_INST_LOAD);
2514
2515 IWL_DEBUG_INFO(priv, "Runtime uCode pointers are set.\n");
2516
2517 return 0;
2518 }
2519
2520 /**
2521 * iwl3945_init_alive_start - Called after REPLY_ALIVE notification received
2522 *
2523 * Called after REPLY_ALIVE notification received from "initialize" uCode.
2524 *
2525 * Tell "initialize" uCode to go ahead and load the runtime uCode.
2526 */
2527 static void iwl3945_init_alive_start(struct iwl_priv *priv)
2528 {
2529 /* Check alive response for "valid" sign from uCode */
2530 if (priv->card_alive_init.is_valid != UCODE_VALID_OK) {
2531 /* We had an error bringing up the hardware, so take it
2532 * all the way back down so we can try again */
2533 IWL_DEBUG_INFO(priv, "Initialize Alive failed.\n");
2534 goto restart;
2535 }
2536
2537 /* Bootstrap uCode has loaded initialize uCode ... verify inst image.
2538 * This is a paranoid check, because we would not have gotten the
2539 * "initialize" alive if code weren't properly loaded. */
2540 if (iwl3945_verify_ucode(priv)) {
2541 /* Runtime instruction load was bad;
2542 * take it all the way back down so we can try again */
2543 IWL_DEBUG_INFO(priv, "Bad \"initialize\" uCode load.\n");
2544 goto restart;
2545 }
2546
2547 /* Send pointers to protocol/runtime uCode image ... init code will
2548 * load and launch runtime uCode, which will send us another "Alive"
2549 * notification. */
2550 IWL_DEBUG_INFO(priv, "Initialization Alive received.\n");
2551 if (iwl3945_set_ucode_ptrs(priv)) {
2552 /* Runtime instruction load won't happen;
2553 * take it all the way back down so we can try again */
2554 IWL_DEBUG_INFO(priv, "Couldn't set up uCode pointers.\n");
2555 goto restart;
2556 }
2557 return;
2558
2559 restart:
2560 queue_work(priv->workqueue, &priv->restart);
2561 }
2562
2563 /**
2564 * iwl3945_alive_start - called after REPLY_ALIVE notification received
2565 * from protocol/runtime uCode (initialization uCode's
2566 * Alive gets handled by iwl3945_init_alive_start()).
2567 */
2568 static void iwl3945_alive_start(struct iwl_priv *priv)
2569 {
2570 int thermal_spin = 0;
2571 u32 rfkill;
2572
2573 IWL_DEBUG_INFO(priv, "Runtime Alive received.\n");
2574
2575 if (priv->card_alive.is_valid != UCODE_VALID_OK) {
2576 /* We had an error bringing up the hardware, so take it
2577 * all the way back down so we can try again */
2578 IWL_DEBUG_INFO(priv, "Alive failed.\n");
2579 goto restart;
2580 }
2581
2582 /* Initialize uCode has loaded Runtime uCode ... verify inst image.
2583 * This is a paranoid check, because we would not have gotten the
2584 * "runtime" alive if code weren't properly loaded. */
2585 if (iwl3945_verify_ucode(priv)) {
2586 /* Runtime instruction load was bad;
2587 * take it all the way back down so we can try again */
2588 IWL_DEBUG_INFO(priv, "Bad runtime uCode load.\n");
2589 goto restart;
2590 }
2591
2592 priv->cfg->ops->smgmt->clear_station_table(priv);
2593
2594 rfkill = iwl_read_prph(priv, APMG_RFKILL_REG);
2595 IWL_DEBUG_INFO(priv, "RFKILL status: 0x%x\n", rfkill);
2596
2597 if (rfkill & 0x1) {
2598 clear_bit(STATUS_RF_KILL_HW, &priv->status);
2599 /* if RFKILL is not on, then wait for thermal
2600 * sensor in adapter to kick in */
2601 while (iwl3945_hw_get_temperature(priv) == 0) {
2602 thermal_spin++;
2603 udelay(10);
2604 }
2605
2606 if (thermal_spin)
2607 IWL_DEBUG_INFO(priv, "Thermal calibration took %dus\n",
2608 thermal_spin * 10);
2609 } else
2610 set_bit(STATUS_RF_KILL_HW, &priv->status);
2611
2612 /* After the ALIVE response, we can send commands to 3945 uCode */
2613 set_bit(STATUS_ALIVE, &priv->status);
2614
2615 if (iwl_is_rfkill(priv))
2616 return;
2617
2618 ieee80211_wake_queues(priv->hw);
2619
2620 priv->active_rate = priv->rates_mask;
2621 priv->active_rate_basic = priv->rates_mask & IWL_BASIC_RATES_MASK;
2622
2623 iwl_power_update_mode(priv, false);
2624
2625 if (iwl_is_associated(priv)) {
2626 struct iwl3945_rxon_cmd *active_rxon =
2627 (struct iwl3945_rxon_cmd *)(&priv->active_rxon);
2628
2629 memcpy(&priv->staging_rxon, &priv->active_rxon,
2630 sizeof(priv->staging_rxon));
2631 active_rxon->filter_flags &= ~RXON_FILTER_ASSOC_MSK;
2632 } else {
2633 /* Initialize our rx_config data */
2634 iwl_connection_init_rx_config(priv, priv->iw_mode);
2635 }
2636
2637 /* Configure Bluetooth device coexistence support */
2638 iwl_send_bt_config(priv);
2639
2640 /* Configure the adapter for unassociated operation */
2641 iwlcore_commit_rxon(priv);
2642
2643 iwl3945_reg_txpower_periodic(priv);
2644
2645 iwl3945_led_register(priv);
2646
2647 IWL_DEBUG_INFO(priv, "ALIVE processing complete.\n");
2648 set_bit(STATUS_READY, &priv->status);
2649 wake_up_interruptible(&priv->wait_command_queue);
2650
2651 /* reassociate for ADHOC mode */
2652 if (priv->vif && (priv->iw_mode == NL80211_IFTYPE_ADHOC)) {
2653 struct sk_buff *beacon = ieee80211_beacon_get(priv->hw,
2654 priv->vif);
2655 if (beacon)
2656 iwl_mac_beacon_update(priv->hw, beacon);
2657 }
2658
2659 if (test_and_clear_bit(STATUS_MODE_PENDING, &priv->status))
2660 iwl_set_mode(priv, priv->iw_mode);
2661
2662 return;
2663
2664 restart:
2665 queue_work(priv->workqueue, &priv->restart);
2666 }
2667
2668 static void iwl3945_cancel_deferred_work(struct iwl_priv *priv);
2669
2670 static void __iwl3945_down(struct iwl_priv *priv)
2671 {
2672 unsigned long flags;
2673 int exit_pending = test_bit(STATUS_EXIT_PENDING, &priv->status);
2674 struct ieee80211_conf *conf = NULL;
2675
2676 IWL_DEBUG_INFO(priv, DRV_NAME " is going down\n");
2677
2678 conf = ieee80211_get_hw_conf(priv->hw);
2679
2680 if (!exit_pending)
2681 set_bit(STATUS_EXIT_PENDING, &priv->status);
2682
2683 iwl3945_led_unregister(priv);
2684 priv->cfg->ops->smgmt->clear_station_table(priv);
2685
2686 /* Unblock any waiting calls */
2687 wake_up_interruptible_all(&priv->wait_command_queue);
2688
2689 /* Wipe out the EXIT_PENDING status bit if we are not actually
2690 * exiting the module */
2691 if (!exit_pending)
2692 clear_bit(STATUS_EXIT_PENDING, &priv->status);
2693
2694 /* stop and reset the on-board processor */
2695 iwl_write32(priv, CSR_RESET, CSR_RESET_REG_FLAG_NEVO_RESET);
2696
2697 /* tell the device to stop sending interrupts */
2698 spin_lock_irqsave(&priv->lock, flags);
2699 iwl_disable_interrupts(priv);
2700 spin_unlock_irqrestore(&priv->lock, flags);
2701 iwl_synchronize_irq(priv);
2702
2703 if (priv->mac80211_registered)
2704 ieee80211_stop_queues(priv->hw);
2705
2706 /* If we have not previously called iwl3945_init() then
2707 * clear all bits but the RF Kill bits and return */
2708 if (!iwl_is_init(priv)) {
2709 priv->status = test_bit(STATUS_RF_KILL_HW, &priv->status) <<
2710 STATUS_RF_KILL_HW |
2711 test_bit(STATUS_RF_KILL_SW, &priv->status) <<
2712 STATUS_RF_KILL_SW |
2713 test_bit(STATUS_GEO_CONFIGURED, &priv->status) <<
2714 STATUS_GEO_CONFIGURED |
2715 test_bit(STATUS_EXIT_PENDING, &priv->status) <<
2716 STATUS_EXIT_PENDING;
2717 goto exit;
2718 }
2719
2720 /* ...otherwise clear out all the status bits but the RF Kill
2721 * bits and continue taking the NIC down. */
2722 priv->status &= test_bit(STATUS_RF_KILL_HW, &priv->status) <<
2723 STATUS_RF_KILL_HW |
2724 test_bit(STATUS_RF_KILL_SW, &priv->status) <<
2725 STATUS_RF_KILL_SW |
2726 test_bit(STATUS_GEO_CONFIGURED, &priv->status) <<
2727 STATUS_GEO_CONFIGURED |
2728 test_bit(STATUS_FW_ERROR, &priv->status) <<
2729 STATUS_FW_ERROR |
2730 test_bit(STATUS_EXIT_PENDING, &priv->status) <<
2731 STATUS_EXIT_PENDING;
2732
2733 priv->cfg->ops->lib->apm_ops.reset(priv);
2734 spin_lock_irqsave(&priv->lock, flags);
2735 iwl_clear_bit(priv, CSR_GP_CNTRL, CSR_GP_CNTRL_REG_FLAG_MAC_ACCESS_REQ);
2736 spin_unlock_irqrestore(&priv->lock, flags);
2737
2738 iwl3945_hw_txq_ctx_stop(priv);
2739 iwl3945_hw_rxq_stop(priv);
2740
2741 iwl_write_prph(priv, APMG_CLK_DIS_REG,
2742 APMG_CLK_VAL_DMA_CLK_RQT);
2743
2744 udelay(5);
2745
2746 if (exit_pending)
2747 priv->cfg->ops->lib->apm_ops.stop(priv);
2748 else
2749 priv->cfg->ops->lib->apm_ops.reset(priv);
2750
2751 exit:
2752 memset(&priv->card_alive, 0, sizeof(struct iwl_alive_resp));
2753
2754 if (priv->ibss_beacon)
2755 dev_kfree_skb(priv->ibss_beacon);
2756 priv->ibss_beacon = NULL;
2757
2758 /* clear out any free frames */
2759 iwl3945_clear_free_frames(priv);
2760 }
2761
2762 static void iwl3945_down(struct iwl_priv *priv)
2763 {
2764 mutex_lock(&priv->mutex);
2765 __iwl3945_down(priv);
2766 mutex_unlock(&priv->mutex);
2767
2768 iwl3945_cancel_deferred_work(priv);
2769 }
2770
2771 #define MAX_HW_RESTARTS 5
2772
2773 static int __iwl3945_up(struct iwl_priv *priv)
2774 {
2775 int rc, i;
2776
2777 if (test_bit(STATUS_EXIT_PENDING, &priv->status)) {
2778 IWL_WARN(priv, "Exit pending; will not bring the NIC up\n");
2779 return -EIO;
2780 }
2781
2782 if (test_bit(STATUS_RF_KILL_SW, &priv->status)) {
2783 IWL_WARN(priv, "Radio disabled by SW RF kill (module "
2784 "parameter)\n");
2785 return -ENODEV;
2786 }
2787
2788 if (!priv->ucode_data_backup.v_addr || !priv->ucode_data.v_addr) {
2789 IWL_ERR(priv, "ucode not available for device bring up\n");
2790 return -EIO;
2791 }
2792
2793 /* If platform's RF_KILL switch is NOT set to KILL */
2794 if (iwl_read32(priv, CSR_GP_CNTRL) &
2795 CSR_GP_CNTRL_REG_FLAG_HW_RF_KILL_SW)
2796 clear_bit(STATUS_RF_KILL_HW, &priv->status);
2797 else {
2798 set_bit(STATUS_RF_KILL_HW, &priv->status);
2799 IWL_WARN(priv, "Radio disabled by HW RF Kill switch\n");
2800 return -ENODEV;
2801 }
2802
2803 iwl_write32(priv, CSR_INT, 0xFFFFFFFF);
2804
2805 rc = iwl3945_hw_nic_init(priv);
2806 if (rc) {
2807 IWL_ERR(priv, "Unable to int nic\n");
2808 return rc;
2809 }
2810
2811 /* make sure rfkill handshake bits are cleared */
2812 iwl_write32(priv, CSR_UCODE_DRV_GP1_CLR, CSR_UCODE_SW_BIT_RFKILL);
2813 iwl_write32(priv, CSR_UCODE_DRV_GP1_CLR,
2814 CSR_UCODE_DRV_GP1_BIT_CMD_BLOCKED);
2815
2816 /* clear (again), then enable host interrupts */
2817 iwl_write32(priv, CSR_INT, 0xFFFFFFFF);
2818 iwl_enable_interrupts(priv);
2819
2820 /* really make sure rfkill handshake bits are cleared */
2821 iwl_write32(priv, CSR_UCODE_DRV_GP1_CLR, CSR_UCODE_SW_BIT_RFKILL);
2822 iwl_write32(priv, CSR_UCODE_DRV_GP1_CLR, CSR_UCODE_SW_BIT_RFKILL);
2823
2824 /* Copy original ucode data image from disk into backup cache.
2825 * This will be used to initialize the on-board processor's
2826 * data SRAM for a clean start when the runtime program first loads. */
2827 memcpy(priv->ucode_data_backup.v_addr, priv->ucode_data.v_addr,
2828 priv->ucode_data.len);
2829
2830 /* We return success when we resume from suspend and rf_kill is on. */
2831 if (test_bit(STATUS_RF_KILL_HW, &priv->status))
2832 return 0;
2833
2834 for (i = 0; i < MAX_HW_RESTARTS; i++) {
2835
2836 priv->cfg->ops->smgmt->clear_station_table(priv);
2837
2838 /* load bootstrap state machine,
2839 * load bootstrap program into processor's memory,
2840 * prepare to load the "initialize" uCode */
2841 priv->cfg->ops->lib->load_ucode(priv);
2842
2843 if (rc) {
2844 IWL_ERR(priv,
2845 "Unable to set up bootstrap uCode: %d\n", rc);
2846 continue;
2847 }
2848
2849 /* start card; "initialize" will load runtime ucode */
2850 iwl3945_nic_start(priv);
2851
2852 IWL_DEBUG_INFO(priv, DRV_NAME " is coming up\n");
2853
2854 return 0;
2855 }
2856
2857 set_bit(STATUS_EXIT_PENDING, &priv->status);
2858 __iwl3945_down(priv);
2859 clear_bit(STATUS_EXIT_PENDING, &priv->status);
2860
2861 /* tried to restart and config the device for as long as our
2862 * patience could withstand */
2863 IWL_ERR(priv, "Unable to initialize device after %d attempts.\n", i);
2864 return -EIO;
2865 }
2866
2867
2868 /*****************************************************************************
2869 *
2870 * Workqueue callbacks
2871 *
2872 *****************************************************************************/
2873
2874 static void iwl3945_bg_init_alive_start(struct work_struct *data)
2875 {
2876 struct iwl_priv *priv =
2877 container_of(data, struct iwl_priv, init_alive_start.work);
2878
2879 if (test_bit(STATUS_EXIT_PENDING, &priv->status))
2880 return;
2881
2882 mutex_lock(&priv->mutex);
2883 iwl3945_init_alive_start(priv);
2884 mutex_unlock(&priv->mutex);
2885 }
2886
2887 static void iwl3945_bg_alive_start(struct work_struct *data)
2888 {
2889 struct iwl_priv *priv =
2890 container_of(data, struct iwl_priv, alive_start.work);
2891
2892 if (test_bit(STATUS_EXIT_PENDING, &priv->status))
2893 return;
2894
2895 mutex_lock(&priv->mutex);
2896 iwl3945_alive_start(priv);
2897 mutex_unlock(&priv->mutex);
2898 }
2899
2900 static void iwl3945_rfkill_poll(struct work_struct *data)
2901 {
2902 struct iwl_priv *priv =
2903 container_of(data, struct iwl_priv, rfkill_poll.work);
2904 unsigned long status = priv->status;
2905
2906 if (iwl_read32(priv, CSR_GP_CNTRL) & CSR_GP_CNTRL_REG_FLAG_HW_RF_KILL_SW)
2907 clear_bit(STATUS_RF_KILL_HW, &priv->status);
2908 else
2909 set_bit(STATUS_RF_KILL_HW, &priv->status);
2910
2911 if (test_bit(STATUS_RF_KILL_HW, &status) != test_bit(STATUS_RF_KILL_HW, &priv->status))
2912 queue_work(priv->workqueue, &priv->rf_kill);
2913
2914 queue_delayed_work(priv->workqueue, &priv->rfkill_poll,
2915 round_jiffies_relative(2 * HZ));
2916
2917 }
2918
2919 #define IWL_SCAN_CHECK_WATCHDOG (7 * HZ)
2920 static void iwl3945_bg_request_scan(struct work_struct *data)
2921 {
2922 struct iwl_priv *priv =
2923 container_of(data, struct iwl_priv, request_scan);
2924 struct iwl_host_cmd cmd = {
2925 .id = REPLY_SCAN_CMD,
2926 .len = sizeof(struct iwl3945_scan_cmd),
2927 .meta.flags = CMD_SIZE_HUGE,
2928 };
2929 int rc = 0;
2930 struct iwl3945_scan_cmd *scan;
2931 struct ieee80211_conf *conf = NULL;
2932 u8 n_probes = 0;
2933 enum ieee80211_band band;
2934 bool is_active = false;
2935
2936 conf = ieee80211_get_hw_conf(priv->hw);
2937
2938 mutex_lock(&priv->mutex);
2939
2940 cancel_delayed_work(&priv->scan_check);
2941
2942 if (!iwl_is_ready(priv)) {
2943 IWL_WARN(priv, "request scan called when driver not ready.\n");
2944 goto done;
2945 }
2946
2947 /* Make sure the scan wasn't canceled before this queued work
2948 * was given the chance to run... */
2949 if (!test_bit(STATUS_SCANNING, &priv->status))
2950 goto done;
2951
2952 /* This should never be called or scheduled if there is currently
2953 * a scan active in the hardware. */
2954 if (test_bit(STATUS_SCAN_HW, &priv->status)) {
2955 IWL_DEBUG_INFO(priv, "Multiple concurrent scan requests "
2956 "Ignoring second request.\n");
2957 rc = -EIO;
2958 goto done;
2959 }
2960
2961 if (test_bit(STATUS_EXIT_PENDING, &priv->status)) {
2962 IWL_DEBUG_SCAN(priv, "Aborting scan due to device shutdown\n");
2963 goto done;
2964 }
2965
2966 if (test_bit(STATUS_SCAN_ABORTING, &priv->status)) {
2967 IWL_DEBUG_HC(priv,
2968 "Scan request while abort pending. Queuing.\n");
2969 goto done;
2970 }
2971
2972 if (iwl_is_rfkill(priv)) {
2973 IWL_DEBUG_HC(priv, "Aborting scan due to RF Kill activation\n");
2974 goto done;
2975 }
2976
2977 if (!test_bit(STATUS_READY, &priv->status)) {
2978 IWL_DEBUG_HC(priv,
2979 "Scan request while uninitialized. Queuing.\n");
2980 goto done;
2981 }
2982
2983 if (!priv->scan_bands) {
2984 IWL_DEBUG_HC(priv, "Aborting scan due to no requested bands\n");
2985 goto done;
2986 }
2987
2988 if (!priv->scan) {
2989 priv->scan = kmalloc(sizeof(struct iwl3945_scan_cmd) +
2990 IWL_MAX_SCAN_SIZE, GFP_KERNEL);
2991 if (!priv->scan) {
2992 rc = -ENOMEM;
2993 goto done;
2994 }
2995 }
2996 scan = priv->scan;
2997 memset(scan, 0, sizeof(struct iwl3945_scan_cmd) + IWL_MAX_SCAN_SIZE);
2998
2999 scan->quiet_plcp_th = IWL_PLCP_QUIET_THRESH;
3000 scan->quiet_time = IWL_ACTIVE_QUIET_TIME;
3001
3002 if (iwl_is_associated(priv)) {
3003 u16 interval = 0;
3004 u32 extra;
3005 u32 suspend_time = 100;
3006 u32 scan_suspend_time = 100;
3007 unsigned long flags;
3008
3009 IWL_DEBUG_INFO(priv, "Scanning while associated...\n");
3010
3011 spin_lock_irqsave(&priv->lock, flags);
3012 interval = priv->beacon_int;
3013 spin_unlock_irqrestore(&priv->lock, flags);
3014
3015 scan->suspend_time = 0;
3016 scan->max_out_time = cpu_to_le32(200 * 1024);
3017 if (!interval)
3018 interval = suspend_time;
3019 /*
3020 * suspend time format:
3021 * 0-19: beacon interval in usec (time before exec.)
3022 * 20-23: 0
3023 * 24-31: number of beacons (suspend between channels)
3024 */
3025
3026 extra = (suspend_time / interval) << 24;
3027 scan_suspend_time = 0xFF0FFFFF &
3028 (extra | ((suspend_time % interval) * 1024));
3029
3030 scan->suspend_time = cpu_to_le32(scan_suspend_time);
3031 IWL_DEBUG_SCAN(priv, "suspend_time 0x%X beacon interval %d\n",
3032 scan_suspend_time, interval);
3033 }
3034
3035 if (priv->scan_request->n_ssids) {
3036 int i, p = 0;
3037 IWL_DEBUG_SCAN(priv, "Kicking off active scan\n");
3038 for (i = 0; i < priv->scan_request->n_ssids; i++) {
3039 /* always does wildcard anyway */
3040 if (!priv->scan_request->ssids[i].ssid_len)
3041 continue;
3042 scan->direct_scan[p].id = WLAN_EID_SSID;
3043 scan->direct_scan[p].len =
3044 priv->scan_request->ssids[i].ssid_len;
3045 memcpy(scan->direct_scan[p].ssid,
3046 priv->scan_request->ssids[i].ssid,
3047 priv->scan_request->ssids[i].ssid_len);
3048 n_probes++;
3049 p++;
3050 }
3051 is_active = true;
3052 } else
3053 IWL_DEBUG_SCAN(priv, "Kicking off passive scan.\n");
3054
3055 /* We don't build a direct scan probe request; the uCode will do
3056 * that based on the direct_mask added to each channel entry */
3057 scan->tx_cmd.tx_flags = TX_CMD_FLG_SEQ_CTL_MSK;
3058 scan->tx_cmd.sta_id = priv->hw_params.bcast_sta_id;
3059 scan->tx_cmd.stop_time.life_time = TX_CMD_LIFE_TIME_INFINITE;
3060
3061 /* flags + rate selection */
3062
3063 if (priv->scan_bands & BIT(IEEE80211_BAND_2GHZ)) {
3064 scan->flags = RXON_FLG_BAND_24G_MSK | RXON_FLG_AUTO_DETECT_MSK;
3065 scan->tx_cmd.rate = IWL_RATE_1M_PLCP;
3066 scan->good_CRC_th = 0;
3067 band = IEEE80211_BAND_2GHZ;
3068 } else if (priv->scan_bands & BIT(IEEE80211_BAND_5GHZ)) {
3069 scan->tx_cmd.rate = IWL_RATE_6M_PLCP;
3070 /*
3071 * If active scaning is requested but a certain channel
3072 * is marked passive, we can do active scanning if we
3073 * detect transmissions.
3074 */
3075 scan->good_CRC_th = is_active ? IWL_GOOD_CRC_TH : 0;
3076 band = IEEE80211_BAND_5GHZ;
3077 } else {
3078 IWL_WARN(priv, "Invalid scan band count\n");
3079 goto done;
3080 }
3081
3082 scan->tx_cmd.len = cpu_to_le16(
3083 iwl_fill_probe_req(priv,
3084 (struct ieee80211_mgmt *)scan->data,
3085 priv->scan_request->ie,
3086 priv->scan_request->ie_len,
3087 IWL_MAX_SCAN_SIZE - sizeof(*scan)));
3088
3089 /* select Rx antennas */
3090 scan->flags |= iwl3945_get_antenna_flags(priv);
3091
3092 if (iwl_is_monitor_mode(priv))
3093 scan->filter_flags = RXON_FILTER_PROMISC_MSK;
3094
3095 scan->channel_count =
3096 iwl3945_get_channels_for_scan(priv, band, is_active, n_probes,
3097 (void *)&scan->data[le16_to_cpu(scan->tx_cmd.len)]);
3098
3099 if (scan->channel_count == 0) {
3100 IWL_DEBUG_SCAN(priv, "channel count %d\n", scan->channel_count);
3101 goto done;
3102 }
3103
3104 cmd.len += le16_to_cpu(scan->tx_cmd.len) +
3105 scan->channel_count * sizeof(struct iwl3945_scan_channel);
3106 cmd.data = scan;
3107 scan->len = cpu_to_le16(cmd.len);
3108
3109 set_bit(STATUS_SCAN_HW, &priv->status);
3110 rc = iwl_send_cmd_sync(priv, &cmd);
3111 if (rc)
3112 goto done;
3113
3114 queue_delayed_work(priv->workqueue, &priv->scan_check,
3115 IWL_SCAN_CHECK_WATCHDOG);
3116
3117 mutex_unlock(&priv->mutex);
3118 return;
3119
3120 done:
3121 /* can not perform scan make sure we clear scanning
3122 * bits from status so next scan request can be performed.
3123 * if we dont clear scanning status bit here all next scan
3124 * will fail
3125 */
3126 clear_bit(STATUS_SCAN_HW, &priv->status);
3127 clear_bit(STATUS_SCANNING, &priv->status);
3128
3129 /* inform mac80211 scan aborted */
3130 queue_work(priv->workqueue, &priv->scan_completed);
3131 mutex_unlock(&priv->mutex);
3132 }
3133
3134 static void iwl3945_bg_up(struct work_struct *data)
3135 {
3136 struct iwl_priv *priv = container_of(data, struct iwl_priv, up);
3137
3138 if (test_bit(STATUS_EXIT_PENDING, &priv->status))
3139 return;
3140
3141 mutex_lock(&priv->mutex);
3142 __iwl3945_up(priv);
3143 mutex_unlock(&priv->mutex);
3144 iwl_rfkill_set_hw_state(priv);
3145 }
3146
3147 static void iwl3945_bg_restart(struct work_struct *data)
3148 {
3149 struct iwl_priv *priv = container_of(data, struct iwl_priv, restart);
3150
3151 if (test_bit(STATUS_EXIT_PENDING, &priv->status))
3152 return;
3153
3154 if (test_and_clear_bit(STATUS_FW_ERROR, &priv->status)) {
3155 mutex_lock(&priv->mutex);
3156 priv->vif = NULL;
3157 priv->is_open = 0;
3158 mutex_unlock(&priv->mutex);
3159 iwl3945_down(priv);
3160 ieee80211_restart_hw(priv->hw);
3161 } else {
3162 iwl3945_down(priv);
3163 queue_work(priv->workqueue, &priv->up);
3164 }
3165 }
3166
3167 static void iwl3945_bg_rx_replenish(struct work_struct *data)
3168 {
3169 struct iwl_priv *priv =
3170 container_of(data, struct iwl_priv, rx_replenish);
3171
3172 if (test_bit(STATUS_EXIT_PENDING, &priv->status))
3173 return;
3174
3175 mutex_lock(&priv->mutex);
3176 iwl3945_rx_replenish(priv);
3177 mutex_unlock(&priv->mutex);
3178 }
3179
3180 #define IWL_DELAY_NEXT_SCAN (HZ*2)
3181
3182 void iwl3945_post_associate(struct iwl_priv *priv)
3183 {
3184 int rc = 0;
3185 struct ieee80211_conf *conf = NULL;
3186
3187 if (priv->iw_mode == NL80211_IFTYPE_AP) {
3188 IWL_ERR(priv, "%s Should not be called in AP mode\n", __func__);
3189 return;
3190 }
3191
3192
3193 IWL_DEBUG_ASSOC(priv, "Associated as %d to: %pM\n",
3194 priv->assoc_id, priv->active_rxon.bssid_addr);
3195
3196 if (test_bit(STATUS_EXIT_PENDING, &priv->status))
3197 return;
3198
3199 if (!priv->vif || !priv->is_open)
3200 return;
3201
3202 iwl_scan_cancel_timeout(priv, 200);
3203
3204 conf = ieee80211_get_hw_conf(priv->hw);
3205
3206 priv->staging_rxon.filter_flags &= ~RXON_FILTER_ASSOC_MSK;
3207 iwlcore_commit_rxon(priv);
3208
3209 memset(&priv->rxon_timing, 0, sizeof(struct iwl_rxon_time_cmd));
3210 iwl3945_setup_rxon_timing(priv);
3211 rc = iwl_send_cmd_pdu(priv, REPLY_RXON_TIMING,
3212 sizeof(priv->rxon_timing), &priv->rxon_timing);
3213 if (rc)
3214 IWL_WARN(priv, "REPLY_RXON_TIMING failed - "
3215 "Attempting to continue.\n");
3216
3217 priv->staging_rxon.filter_flags |= RXON_FILTER_ASSOC_MSK;
3218
3219 priv->staging_rxon.assoc_id = cpu_to_le16(priv->assoc_id);
3220
3221 IWL_DEBUG_ASSOC(priv, "assoc id %d beacon interval %d\n",
3222 priv->assoc_id, priv->beacon_int);
3223
3224 if (priv->assoc_capability & WLAN_CAPABILITY_SHORT_PREAMBLE)
3225 priv->staging_rxon.flags |= RXON_FLG_SHORT_PREAMBLE_MSK;
3226 else
3227 priv->staging_rxon.flags &= ~RXON_FLG_SHORT_PREAMBLE_MSK;
3228
3229 if (priv->staging_rxon.flags & RXON_FLG_BAND_24G_MSK) {
3230 if (priv->assoc_capability & WLAN_CAPABILITY_SHORT_SLOT_TIME)
3231 priv->staging_rxon.flags |= RXON_FLG_SHORT_SLOT_MSK;
3232 else
3233 priv->staging_rxon.flags &= ~RXON_FLG_SHORT_SLOT_MSK;
3234
3235 if (priv->iw_mode == NL80211_IFTYPE_ADHOC)
3236 priv->staging_rxon.flags &= ~RXON_FLG_SHORT_SLOT_MSK;
3237
3238 }
3239
3240 iwlcore_commit_rxon(priv);
3241
3242 switch (priv->iw_mode) {
3243 case NL80211_IFTYPE_STATION:
3244 iwl3945_rate_scale_init(priv->hw, IWL_AP_ID);
3245 break;
3246
3247 case NL80211_IFTYPE_ADHOC:
3248
3249 priv->assoc_id = 1;
3250 priv->cfg->ops->smgmt->add_station(priv, priv->bssid, 0, 0, NULL);
3251 iwl3945_sync_sta(priv, IWL_STA_ID,
3252 (priv->band == IEEE80211_BAND_5GHZ) ?
3253 IWL_RATE_6M_PLCP : IWL_RATE_1M_PLCP,
3254 CMD_ASYNC);
3255 iwl3945_rate_scale_init(priv->hw, IWL_STA_ID);
3256 iwl3945_send_beacon_cmd(priv);
3257
3258 break;
3259
3260 default:
3261 IWL_ERR(priv, "%s Should not be called in %d mode\n",
3262 __func__, priv->iw_mode);
3263 break;
3264 }
3265
3266 iwl_activate_qos(priv, 0);
3267
3268 /* we have just associated, don't start scan too early */
3269 priv->next_scan_jiffies = jiffies + IWL_DELAY_NEXT_SCAN;
3270 }
3271
3272 /*****************************************************************************
3273 *
3274 * mac80211 entry point functions
3275 *
3276 *****************************************************************************/
3277
3278 #define UCODE_READY_TIMEOUT (2 * HZ)
3279
3280 static int iwl3945_mac_start(struct ieee80211_hw *hw)
3281 {
3282 struct iwl_priv *priv = hw->priv;
3283 int ret;
3284
3285 IWL_DEBUG_MAC80211(priv, "enter\n");
3286
3287 /* we should be verifying the device is ready to be opened */
3288 mutex_lock(&priv->mutex);
3289
3290 memset(&priv->staging_rxon, 0, sizeof(priv->staging_rxon));
3291 /* fetch ucode file from disk, alloc and copy to bus-master buffers ...
3292 * ucode filename and max sizes are card-specific. */
3293
3294 if (!priv->ucode_code.len) {
3295 ret = iwl3945_read_ucode(priv);
3296 if (ret) {
3297 IWL_ERR(priv, "Could not read microcode: %d\n", ret);
3298 mutex_unlock(&priv->mutex);
3299 goto out_release_irq;
3300 }
3301 }
3302
3303 ret = __iwl3945_up(priv);
3304
3305 mutex_unlock(&priv->mutex);
3306
3307 iwl_rfkill_set_hw_state(priv);
3308
3309 if (ret)
3310 goto out_release_irq;
3311
3312 IWL_DEBUG_INFO(priv, "Start UP work.\n");
3313
3314 /* Wait for START_ALIVE from ucode. Otherwise callbacks from
3315 * mac80211 will not be run successfully. */
3316 ret = wait_event_interruptible_timeout(priv->wait_command_queue,
3317 test_bit(STATUS_READY, &priv->status),
3318 UCODE_READY_TIMEOUT);
3319 if (!ret) {
3320 if (!test_bit(STATUS_READY, &priv->status)) {
3321 IWL_ERR(priv,
3322 "Wait for START_ALIVE timeout after %dms.\n",
3323 jiffies_to_msecs(UCODE_READY_TIMEOUT));
3324 ret = -ETIMEDOUT;
3325 goto out_release_irq;
3326 }
3327 }
3328
3329 /* ucode is running and will send rfkill notifications,
3330 * no need to poll the killswitch state anymore */
3331 cancel_delayed_work(&priv->rfkill_poll);
3332
3333 priv->is_open = 1;
3334 IWL_DEBUG_MAC80211(priv, "leave\n");
3335 return 0;
3336
3337 out_release_irq:
3338 priv->is_open = 0;
3339 IWL_DEBUG_MAC80211(priv, "leave - failed\n");
3340 return ret;
3341 }
3342
3343 static void iwl3945_mac_stop(struct ieee80211_hw *hw)
3344 {
3345 struct iwl_priv *priv = hw->priv;
3346
3347 IWL_DEBUG_MAC80211(priv, "enter\n");
3348
3349 if (!priv->is_open) {
3350 IWL_DEBUG_MAC80211(priv, "leave - skip\n");
3351 return;
3352 }
3353
3354 priv->is_open = 0;
3355
3356 if (iwl_is_ready_rf(priv)) {
3357 /* stop mac, cancel any scan request and clear
3358 * RXON_FILTER_ASSOC_MSK BIT
3359 */
3360 mutex_lock(&priv->mutex);
3361 iwl_scan_cancel_timeout(priv, 100);
3362 mutex_unlock(&priv->mutex);
3363 }
3364
3365 iwl3945_down(priv);
3366
3367 flush_workqueue(priv->workqueue);
3368
3369 /* start polling the killswitch state again */
3370 queue_delayed_work(priv->workqueue, &priv->rfkill_poll,
3371 round_jiffies_relative(2 * HZ));
3372
3373 IWL_DEBUG_MAC80211(priv, "leave\n");
3374 }
3375
3376 static int iwl3945_mac_tx(struct ieee80211_hw *hw, struct sk_buff *skb)
3377 {
3378 struct iwl_priv *priv = hw->priv;
3379
3380 IWL_DEBUG_MAC80211(priv, "enter\n");
3381
3382 IWL_DEBUG_TX(priv, "dev->xmit(%d bytes) at rate 0x%02x\n", skb->len,
3383 ieee80211_get_tx_rate(hw, IEEE80211_SKB_CB(skb))->bitrate);
3384
3385 if (iwl3945_tx_skb(priv, skb))
3386 dev_kfree_skb_any(skb);
3387
3388 IWL_DEBUG_MAC80211(priv, "leave\n");
3389 return NETDEV_TX_OK;
3390 }
3391
3392 void iwl3945_config_ap(struct iwl_priv *priv)
3393 {
3394 int rc = 0;
3395
3396 if (test_bit(STATUS_EXIT_PENDING, &priv->status))
3397 return;
3398
3399 /* The following should be done only at AP bring up */
3400 if (!(iwl_is_associated(priv))) {
3401
3402 /* RXON - unassoc (to set timing command) */
3403 priv->staging_rxon.filter_flags &= ~RXON_FILTER_ASSOC_MSK;
3404 iwlcore_commit_rxon(priv);
3405
3406 /* RXON Timing */
3407 memset(&priv->rxon_timing, 0, sizeof(struct iwl_rxon_time_cmd));
3408 iwl3945_setup_rxon_timing(priv);
3409 rc = iwl_send_cmd_pdu(priv, REPLY_RXON_TIMING,
3410 sizeof(priv->rxon_timing),
3411 &priv->rxon_timing);
3412 if (rc)
3413 IWL_WARN(priv, "REPLY_RXON_TIMING failed - "
3414 "Attempting to continue.\n");
3415
3416 /* FIXME: what should be the assoc_id for AP? */
3417 priv->staging_rxon.assoc_id = cpu_to_le16(priv->assoc_id);
3418 if (priv->assoc_capability & WLAN_CAPABILITY_SHORT_PREAMBLE)
3419 priv->staging_rxon.flags |=
3420 RXON_FLG_SHORT_PREAMBLE_MSK;
3421 else
3422 priv->staging_rxon.flags &=
3423 ~RXON_FLG_SHORT_PREAMBLE_MSK;
3424
3425 if (priv->staging_rxon.flags & RXON_FLG_BAND_24G_MSK) {
3426 if (priv->assoc_capability &
3427 WLAN_CAPABILITY_SHORT_SLOT_TIME)
3428 priv->staging_rxon.flags |=
3429 RXON_FLG_SHORT_SLOT_MSK;
3430 else
3431 priv->staging_rxon.flags &=
3432 ~RXON_FLG_SHORT_SLOT_MSK;
3433
3434 if (priv->iw_mode == NL80211_IFTYPE_ADHOC)
3435 priv->staging_rxon.flags &=
3436 ~RXON_FLG_SHORT_SLOT_MSK;
3437 }
3438 /* restore RXON assoc */
3439 priv->staging_rxon.filter_flags |= RXON_FILTER_ASSOC_MSK;
3440 iwlcore_commit_rxon(priv);
3441 priv->cfg->ops->smgmt->add_station(priv, iwl_bcast_addr, 0, 0, NULL);
3442 }
3443 iwl3945_send_beacon_cmd(priv);
3444
3445 /* FIXME - we need to add code here to detect a totally new
3446 * configuration, reset the AP, unassoc, rxon timing, assoc,
3447 * clear sta table, add BCAST sta... */
3448 }
3449
3450 static int iwl3945_mac_set_key(struct ieee80211_hw *hw, enum set_key_cmd cmd,
3451 struct ieee80211_vif *vif,
3452 struct ieee80211_sta *sta,
3453 struct ieee80211_key_conf *key)
3454 {
3455 struct iwl_priv *priv = hw->priv;
3456 const u8 *addr;
3457 int ret = 0;
3458 u8 sta_id = IWL_INVALID_STATION;
3459 u8 static_key;
3460
3461 IWL_DEBUG_MAC80211(priv, "enter\n");
3462
3463 if (iwl3945_mod_params.sw_crypto) {
3464 IWL_DEBUG_MAC80211(priv, "leave - hwcrypto disabled\n");
3465 return -EOPNOTSUPP;
3466 }
3467
3468 addr = sta ? sta->addr : iwl_bcast_addr;
3469 static_key = !iwl_is_associated(priv);
3470
3471 if (!static_key) {
3472 sta_id = priv->cfg->ops->smgmt->find_station(priv, addr);
3473 if (sta_id == IWL_INVALID_STATION) {
3474 IWL_DEBUG_MAC80211(priv, "leave - %pM not in station map.\n",
3475 addr);
3476 return -EINVAL;
3477 }
3478 }
3479
3480 mutex_lock(&priv->mutex);
3481 iwl_scan_cancel_timeout(priv, 100);
3482 mutex_unlock(&priv->mutex);
3483
3484 switch (cmd) {
3485 case SET_KEY:
3486 if (static_key)
3487 ret = iwl3945_set_static_key(priv, key);
3488 else
3489 ret = iwl3945_set_dynamic_key(priv, key, sta_id);
3490 IWL_DEBUG_MAC80211(priv, "enable hwcrypto key\n");
3491 break;
3492 case DISABLE_KEY:
3493 if (static_key)
3494 ret = iwl3945_remove_static_key(priv);
3495 else
3496 ret = iwl3945_clear_sta_key_info(priv, sta_id);
3497 IWL_DEBUG_MAC80211(priv, "disable hwcrypto key\n");
3498 break;
3499 default:
3500 ret = -EINVAL;
3501 }
3502
3503 IWL_DEBUG_MAC80211(priv, "leave\n");
3504
3505 return ret;
3506 }
3507
3508 /*****************************************************************************
3509 *
3510 * sysfs attributes
3511 *
3512 *****************************************************************************/
3513
3514 #ifdef CONFIG_IWLWIFI_DEBUG
3515
3516 /*
3517 * The following adds a new attribute to the sysfs representation
3518 * of this device driver (i.e. a new file in /sys/bus/pci/drivers/iwl/)
3519 * used for controlling the debug level.
3520 *
3521 * See the level definitions in iwl for details.
3522 */
3523 static ssize_t show_debug_level(struct device *d,
3524 struct device_attribute *attr, char *buf)
3525 {
3526 struct iwl_priv *priv = dev_get_drvdata(d);
3527
3528 return sprintf(buf, "0x%08X\n", priv->debug_level);
3529 }
3530 static ssize_t store_debug_level(struct device *d,
3531 struct device_attribute *attr,
3532 const char *buf, size_t count)
3533 {
3534 struct iwl_priv *priv = dev_get_drvdata(d);
3535 unsigned long val;
3536 int ret;
3537
3538 ret = strict_strtoul(buf, 0, &val);
3539 if (ret)
3540 IWL_INFO(priv, "%s is not in hex or decimal form.\n", buf);
3541 else
3542 priv->debug_level = val;
3543
3544 return strnlen(buf, count);
3545 }
3546
3547 static DEVICE_ATTR(debug_level, S_IWUSR | S_IRUGO,
3548 show_debug_level, store_debug_level);
3549
3550 #endif /* CONFIG_IWLWIFI_DEBUG */
3551
3552 static ssize_t show_temperature(struct device *d,
3553 struct device_attribute *attr, char *buf)
3554 {
3555 struct iwl_priv *priv = dev_get_drvdata(d);
3556
3557 if (!iwl_is_alive(priv))
3558 return -EAGAIN;
3559
3560 return sprintf(buf, "%d\n", iwl3945_hw_get_temperature(priv));
3561 }
3562
3563 static DEVICE_ATTR(temperature, S_IRUGO, show_temperature, NULL);
3564
3565 static ssize_t show_tx_power(struct device *d,
3566 struct device_attribute *attr, char *buf)
3567 {
3568 struct iwl_priv *priv = dev_get_drvdata(d);
3569 return sprintf(buf, "%d\n", priv->tx_power_user_lmt);
3570 }
3571
3572 static ssize_t store_tx_power(struct device *d,
3573 struct device_attribute *attr,
3574 const char *buf, size_t count)
3575 {
3576 struct iwl_priv *priv = dev_get_drvdata(d);
3577 char *p = (char *)buf;
3578 u32 val;
3579
3580 val = simple_strtoul(p, &p, 10);
3581 if (p == buf)
3582 IWL_INFO(priv, ": %s is not in decimal form.\n", buf);
3583 else
3584 iwl3945_hw_reg_set_txpower(priv, val);
3585
3586 return count;
3587 }
3588
3589 static DEVICE_ATTR(tx_power, S_IWUSR | S_IRUGO, show_tx_power, store_tx_power);
3590
3591 static ssize_t show_flags(struct device *d,
3592 struct device_attribute *attr, char *buf)
3593 {
3594 struct iwl_priv *priv = dev_get_drvdata(d);
3595
3596 return sprintf(buf, "0x%04X\n", priv->active_rxon.flags);
3597 }
3598
3599 static ssize_t store_flags(struct device *d,
3600 struct device_attribute *attr,
3601 const char *buf, size_t count)
3602 {
3603 struct iwl_priv *priv = dev_get_drvdata(d);
3604 u32 flags = simple_strtoul(buf, NULL, 0);
3605
3606 mutex_lock(&priv->mutex);
3607 if (le32_to_cpu(priv->staging_rxon.flags) != flags) {
3608 /* Cancel any currently running scans... */
3609 if (iwl_scan_cancel_timeout(priv, 100))
3610 IWL_WARN(priv, "Could not cancel scan.\n");
3611 else {
3612 IWL_DEBUG_INFO(priv, "Committing rxon.flags = 0x%04X\n",
3613 flags);
3614 priv->staging_rxon.flags = cpu_to_le32(flags);
3615 iwlcore_commit_rxon(priv);
3616 }
3617 }
3618 mutex_unlock(&priv->mutex);
3619
3620 return count;
3621 }
3622
3623 static DEVICE_ATTR(flags, S_IWUSR | S_IRUGO, show_flags, store_flags);
3624
3625 static ssize_t show_filter_flags(struct device *d,
3626 struct device_attribute *attr, char *buf)
3627 {
3628 struct iwl_priv *priv = dev_get_drvdata(d);
3629
3630 return sprintf(buf, "0x%04X\n",
3631 le32_to_cpu(priv->active_rxon.filter_flags));
3632 }
3633
3634 static ssize_t store_filter_flags(struct device *d,
3635 struct device_attribute *attr,
3636 const char *buf, size_t count)
3637 {
3638 struct iwl_priv *priv = dev_get_drvdata(d);
3639 u32 filter_flags = simple_strtoul(buf, NULL, 0);
3640
3641 mutex_lock(&priv->mutex);
3642 if (le32_to_cpu(priv->staging_rxon.filter_flags) != filter_flags) {
3643 /* Cancel any currently running scans... */
3644 if (iwl_scan_cancel_timeout(priv, 100))
3645 IWL_WARN(priv, "Could not cancel scan.\n");
3646 else {
3647 IWL_DEBUG_INFO(priv, "Committing rxon.filter_flags = "
3648 "0x%04X\n", filter_flags);
3649 priv->staging_rxon.filter_flags =
3650 cpu_to_le32(filter_flags);
3651 iwlcore_commit_rxon(priv);
3652 }
3653 }
3654 mutex_unlock(&priv->mutex);
3655
3656 return count;
3657 }
3658
3659 static DEVICE_ATTR(filter_flags, S_IWUSR | S_IRUGO, show_filter_flags,
3660 store_filter_flags);
3661
3662 #ifdef CONFIG_IWL3945_SPECTRUM_MEASUREMENT
3663
3664 static ssize_t show_measurement(struct device *d,
3665 struct device_attribute *attr, char *buf)
3666 {
3667 struct iwl_priv *priv = dev_get_drvdata(d);
3668 struct iwl_spectrum_notification measure_report;
3669 u32 size = sizeof(measure_report), len = 0, ofs = 0;
3670 u8 *data = (u8 *)&measure_report;
3671 unsigned long flags;
3672
3673 spin_lock_irqsave(&priv->lock, flags);
3674 if (!(priv->measurement_status & MEASUREMENT_READY)) {
3675 spin_unlock_irqrestore(&priv->lock, flags);
3676 return 0;
3677 }
3678 memcpy(&measure_report, &priv->measure_report, size);
3679 priv->measurement_status = 0;
3680 spin_unlock_irqrestore(&priv->lock, flags);
3681
3682 while (size && (PAGE_SIZE - len)) {
3683 hex_dump_to_buffer(data + ofs, size, 16, 1, buf + len,
3684 PAGE_SIZE - len, 1);
3685 len = strlen(buf);
3686 if (PAGE_SIZE - len)
3687 buf[len++] = '\n';
3688
3689 ofs += 16;
3690 size -= min(size, 16U);
3691 }
3692
3693 return len;
3694 }
3695
3696 static ssize_t store_measurement(struct device *d,
3697 struct device_attribute *attr,
3698 const char *buf, size_t count)
3699 {
3700 struct iwl_priv *priv = dev_get_drvdata(d);
3701 struct ieee80211_measurement_params params = {
3702 .channel = le16_to_cpu(priv->active_rxon.channel),
3703 .start_time = cpu_to_le64(priv->last_tsf),
3704 .duration = cpu_to_le16(1),
3705 };
3706 u8 type = IWL_MEASURE_BASIC;
3707 u8 buffer[32];
3708 u8 channel;
3709
3710 if (count) {
3711 char *p = buffer;
3712 strncpy(buffer, buf, min(sizeof(buffer), count));
3713 channel = simple_strtoul(p, NULL, 0);
3714 if (channel)
3715 params.channel = channel;
3716
3717 p = buffer;
3718 while (*p && *p != ' ')
3719 p++;
3720 if (*p)
3721 type = simple_strtoul(p + 1, NULL, 0);
3722 }
3723
3724 IWL_DEBUG_INFO(priv, "Invoking measurement of type %d on "
3725 "channel %d (for '%s')\n", type, params.channel, buf);
3726 iwl3945_get_measurement(priv, &params, type);
3727
3728 return count;
3729 }
3730
3731 static DEVICE_ATTR(measurement, S_IRUSR | S_IWUSR,
3732 show_measurement, store_measurement);
3733 #endif /* CONFIG_IWL3945_SPECTRUM_MEASUREMENT */
3734
3735 static ssize_t store_retry_rate(struct device *d,
3736 struct device_attribute *attr,
3737 const char *buf, size_t count)
3738 {
3739 struct iwl_priv *priv = dev_get_drvdata(d);
3740
3741 priv->retry_rate = simple_strtoul(buf, NULL, 0);
3742 if (priv->retry_rate <= 0)
3743 priv->retry_rate = 1;
3744
3745 return count;
3746 }
3747
3748 static ssize_t show_retry_rate(struct device *d,
3749 struct device_attribute *attr, char *buf)
3750 {
3751 struct iwl_priv *priv = dev_get_drvdata(d);
3752 return sprintf(buf, "%d", priv->retry_rate);
3753 }
3754
3755 static DEVICE_ATTR(retry_rate, S_IWUSR | S_IRUSR, show_retry_rate,
3756 store_retry_rate);
3757
3758
3759 static ssize_t store_power_level(struct device *d,
3760 struct device_attribute *attr,
3761 const char *buf, size_t count)
3762 {
3763 struct iwl_priv *priv = dev_get_drvdata(d);
3764 int ret;
3765 unsigned long mode;
3766
3767
3768 mutex_lock(&priv->mutex);
3769
3770 ret = strict_strtoul(buf, 10, &mode);
3771 if (ret)
3772 goto out;
3773
3774 ret = iwl_power_set_user_mode(priv, mode);
3775 if (ret) {
3776 IWL_DEBUG_MAC80211(priv, "failed setting power mode.\n");
3777 goto out;
3778 }
3779 ret = count;
3780
3781 out:
3782 mutex_unlock(&priv->mutex);
3783 return ret;
3784 }
3785
3786 static ssize_t show_power_level(struct device *d,
3787 struct device_attribute *attr, char *buf)
3788 {
3789 struct iwl_priv *priv = dev_get_drvdata(d);
3790 int mode = priv->power_data.user_power_setting;
3791 int level = priv->power_data.power_mode;
3792 char *p = buf;
3793
3794 p += sprintf(p, "INDEX:%d\t", level);
3795 p += sprintf(p, "USER:%d\n", mode);
3796 return p - buf + 1;
3797 }
3798
3799 static DEVICE_ATTR(power_level, S_IWUSR | S_IRUSR,
3800 show_power_level, store_power_level);
3801
3802 #define MAX_WX_STRING 80
3803
3804 /* Values are in microsecond */
3805 static const s32 timeout_duration[] = {
3806 350000,
3807 250000,
3808 75000,
3809 37000,
3810 25000,
3811 };
3812 static const s32 period_duration[] = {
3813 400000,
3814 700000,
3815 1000000,
3816 1000000,
3817 1000000
3818 };
3819
3820 static ssize_t show_channels(struct device *d,
3821 struct device_attribute *attr, char *buf)
3822 {
3823 /* all this shit doesn't belong into sysfs anyway */
3824 return 0;
3825 }
3826
3827 static DEVICE_ATTR(channels, S_IRUSR, show_channels, NULL);
3828
3829 static ssize_t show_statistics(struct device *d,
3830 struct device_attribute *attr, char *buf)
3831 {
3832 struct iwl_priv *priv = dev_get_drvdata(d);
3833 u32 size = sizeof(struct iwl3945_notif_statistics);
3834 u32 len = 0, ofs = 0;
3835 u8 *data = (u8 *)&priv->statistics_39;
3836 int rc = 0;
3837
3838 if (!iwl_is_alive(priv))
3839 return -EAGAIN;
3840
3841 mutex_lock(&priv->mutex);
3842 rc = iwl_send_statistics_request(priv, 0);
3843 mutex_unlock(&priv->mutex);
3844
3845 if (rc) {
3846 len = sprintf(buf,
3847 "Error sending statistics request: 0x%08X\n", rc);
3848 return len;
3849 }
3850
3851 while (size && (PAGE_SIZE - len)) {
3852 hex_dump_to_buffer(data + ofs, size, 16, 1, buf + len,
3853 PAGE_SIZE - len, 1);
3854 len = strlen(buf);
3855 if (PAGE_SIZE - len)
3856 buf[len++] = '\n';
3857
3858 ofs += 16;
3859 size -= min(size, 16U);
3860 }
3861
3862 return len;
3863 }
3864
3865 static DEVICE_ATTR(statistics, S_IRUGO, show_statistics, NULL);
3866
3867 static ssize_t show_antenna(struct device *d,
3868 struct device_attribute *attr, char *buf)
3869 {
3870 struct iwl_priv *priv = dev_get_drvdata(d);
3871
3872 if (!iwl_is_alive(priv))
3873 return -EAGAIN;
3874
3875 return sprintf(buf, "%d\n", iwl3945_mod_params.antenna);
3876 }
3877
3878 static ssize_t store_antenna(struct device *d,
3879 struct device_attribute *attr,
3880 const char *buf, size_t count)
3881 {
3882 struct iwl_priv *priv __maybe_unused = dev_get_drvdata(d);
3883 int ant;
3884
3885 if (count == 0)
3886 return 0;
3887
3888 if (sscanf(buf, "%1i", &ant) != 1) {
3889 IWL_DEBUG_INFO(priv, "not in hex or decimal form.\n");
3890 return count;
3891 }
3892
3893 if ((ant >= 0) && (ant <= 2)) {
3894 IWL_DEBUG_INFO(priv, "Setting antenna select to %d.\n", ant);
3895 iwl3945_mod_params.antenna = (enum iwl3945_antenna)ant;
3896 } else
3897 IWL_DEBUG_INFO(priv, "Bad antenna select value %d.\n", ant);
3898
3899
3900 return count;
3901 }
3902
3903 static DEVICE_ATTR(antenna, S_IWUSR | S_IRUGO, show_antenna, store_antenna);
3904
3905 static ssize_t show_status(struct device *d,
3906 struct device_attribute *attr, char *buf)
3907 {
3908 struct iwl_priv *priv = dev_get_drvdata(d);
3909 if (!iwl_is_alive(priv))
3910 return -EAGAIN;
3911 return sprintf(buf, "0x%08x\n", (int)priv->status);
3912 }
3913
3914 static DEVICE_ATTR(status, S_IRUGO, show_status, NULL);
3915
3916 static ssize_t dump_error_log(struct device *d,
3917 struct device_attribute *attr,
3918 const char *buf, size_t count)
3919 {
3920 struct iwl_priv *priv = dev_get_drvdata(d);
3921 char *p = (char *)buf;
3922
3923 if (p[0] == '1')
3924 iwl3945_dump_nic_error_log(priv);
3925
3926 return strnlen(buf, count);
3927 }
3928
3929 static DEVICE_ATTR(dump_errors, S_IWUSR, NULL, dump_error_log);
3930
3931 static ssize_t dump_event_log(struct device *d,
3932 struct device_attribute *attr,
3933 const char *buf, size_t count)
3934 {
3935 struct iwl_priv *priv = dev_get_drvdata(d);
3936 char *p = (char *)buf;
3937
3938 if (p[0] == '1')
3939 iwl3945_dump_nic_event_log(priv);
3940
3941 return strnlen(buf, count);
3942 }
3943
3944 static DEVICE_ATTR(dump_events, S_IWUSR, NULL, dump_event_log);
3945
3946 /*****************************************************************************
3947 *
3948 * driver setup and tear down
3949 *
3950 *****************************************************************************/
3951
3952 static void iwl3945_setup_deferred_work(struct iwl_priv *priv)
3953 {
3954 priv->workqueue = create_singlethread_workqueue(DRV_NAME);
3955
3956 init_waitqueue_head(&priv->wait_command_queue);
3957
3958 INIT_WORK(&priv->up, iwl3945_bg_up);
3959 INIT_WORK(&priv->restart, iwl3945_bg_restart);
3960 INIT_WORK(&priv->rx_replenish, iwl3945_bg_rx_replenish);
3961 INIT_WORK(&priv->rf_kill, iwl_bg_rf_kill);
3962 INIT_WORK(&priv->beacon_update, iwl3945_bg_beacon_update);
3963 INIT_DELAYED_WORK(&priv->init_alive_start, iwl3945_bg_init_alive_start);
3964 INIT_DELAYED_WORK(&priv->alive_start, iwl3945_bg_alive_start);
3965 INIT_DELAYED_WORK(&priv->rfkill_poll, iwl3945_rfkill_poll);
3966 INIT_WORK(&priv->scan_completed, iwl_bg_scan_completed);
3967 INIT_WORK(&priv->request_scan, iwl3945_bg_request_scan);
3968 INIT_WORK(&priv->abort_scan, iwl_bg_abort_scan);
3969 INIT_DELAYED_WORK(&priv->scan_check, iwl_bg_scan_check);
3970
3971 iwl3945_hw_setup_deferred_work(priv);
3972
3973 tasklet_init(&priv->irq_tasklet, (void (*)(unsigned long))
3974 iwl3945_irq_tasklet, (unsigned long)priv);
3975 }
3976
3977 static void iwl3945_cancel_deferred_work(struct iwl_priv *priv)
3978 {
3979 iwl3945_hw_cancel_deferred_work(priv);
3980
3981 cancel_delayed_work_sync(&priv->init_alive_start);
3982 cancel_delayed_work(&priv->scan_check);
3983 cancel_delayed_work(&priv->alive_start);
3984 cancel_work_sync(&priv->beacon_update);
3985 }
3986
3987 static struct attribute *iwl3945_sysfs_entries[] = {
3988 &dev_attr_antenna.attr,
3989 &dev_attr_channels.attr,
3990 &dev_attr_dump_errors.attr,
3991 &dev_attr_dump_events.attr,
3992 &dev_attr_flags.attr,
3993 &dev_attr_filter_flags.attr,
3994 #ifdef CONFIG_IWL3945_SPECTRUM_MEASUREMENT
3995 &dev_attr_measurement.attr,
3996 #endif
3997 &dev_attr_power_level.attr,
3998 &dev_attr_retry_rate.attr,
3999 &dev_attr_statistics.attr,
4000 &dev_attr_status.attr,
4001 &dev_attr_temperature.attr,
4002 &dev_attr_tx_power.attr,
4003 #ifdef CONFIG_IWLWIFI_DEBUG
4004 &dev_attr_debug_level.attr,
4005 #endif
4006 NULL
4007 };
4008
4009 static struct attribute_group iwl3945_attribute_group = {
4010 .name = NULL, /* put in device directory */
4011 .attrs = iwl3945_sysfs_entries,
4012 };
4013
4014 static struct ieee80211_ops iwl3945_hw_ops = {
4015 .tx = iwl3945_mac_tx,
4016 .start = iwl3945_mac_start,
4017 .stop = iwl3945_mac_stop,
4018 .add_interface = iwl_mac_add_interface,
4019 .remove_interface = iwl_mac_remove_interface,
4020 .config = iwl_mac_config,
4021 .configure_filter = iwl_configure_filter,
4022 .set_key = iwl3945_mac_set_key,
4023 .get_tx_stats = iwl_mac_get_tx_stats,
4024 .conf_tx = iwl_mac_conf_tx,
4025 .reset_tsf = iwl_mac_reset_tsf,
4026 .bss_info_changed = iwl_bss_info_changed,
4027 .hw_scan = iwl_mac_hw_scan
4028 };
4029
4030 static int iwl3945_init_drv(struct iwl_priv *priv)
4031 {
4032 int ret;
4033 struct iwl3945_eeprom *eeprom = (struct iwl3945_eeprom *)priv->eeprom;
4034
4035 priv->retry_rate = 1;
4036 priv->ibss_beacon = NULL;
4037
4038 spin_lock_init(&priv->lock);
4039 spin_lock_init(&priv->sta_lock);
4040 spin_lock_init(&priv->hcmd_lock);
4041
4042 INIT_LIST_HEAD(&priv->free_frames);
4043
4044 mutex_init(&priv->mutex);
4045
4046 /* Clear the driver's (not device's) station table */
4047 priv->cfg->ops->smgmt->clear_station_table(priv);
4048
4049 priv->data_retry_limit = -1;
4050 priv->ieee_channels = NULL;
4051 priv->ieee_rates = NULL;
4052 priv->band = IEEE80211_BAND_2GHZ;
4053
4054 priv->iw_mode = NL80211_IFTYPE_STATION;
4055
4056 iwl_reset_qos(priv);
4057
4058 priv->qos_data.qos_active = 0;
4059 priv->qos_data.qos_cap.val = 0;
4060
4061 priv->rates_mask = IWL_RATES_MASK;
4062 /* If power management is turned on, default to CAM mode */
4063 priv->power_mode = IWL_POWER_MODE_CAM;
4064 priv->tx_power_user_lmt = IWL_DEFAULT_TX_POWER;
4065
4066 if (eeprom->version < EEPROM_3945_EEPROM_VERSION) {
4067 IWL_WARN(priv, "Unsupported EEPROM version: 0x%04X\n",
4068 eeprom->version);
4069 ret = -EINVAL;
4070 goto err;
4071 }
4072 ret = iwl_init_channel_map(priv);
4073 if (ret) {
4074 IWL_ERR(priv, "initializing regulatory failed: %d\n", ret);
4075 goto err;
4076 }
4077
4078 /* Set up txpower settings in driver for all channels */
4079 if (iwl3945_txpower_set_from_eeprom(priv)) {
4080 ret = -EIO;
4081 goto err_free_channel_map;
4082 }
4083
4084 ret = iwlcore_init_geos(priv);
4085 if (ret) {
4086 IWL_ERR(priv, "initializing geos failed: %d\n", ret);
4087 goto err_free_channel_map;
4088 }
4089 iwl3945_init_hw_rates(priv, priv->ieee_rates);
4090
4091 return 0;
4092
4093 err_free_channel_map:
4094 iwl_free_channel_map(priv);
4095 err:
4096 return ret;
4097 }
4098
4099 static int iwl3945_setup_mac(struct iwl_priv *priv)
4100 {
4101 int ret;
4102 struct ieee80211_hw *hw = priv->hw;
4103
4104 hw->rate_control_algorithm = "iwl-3945-rs";
4105 hw->sta_data_size = sizeof(struct iwl3945_sta_priv);
4106
4107 /* Tell mac80211 our characteristics */
4108 hw->flags = IEEE80211_HW_SIGNAL_DBM |
4109 IEEE80211_HW_NOISE_DBM |
4110 IEEE80211_HW_SPECTRUM_MGMT;
4111
4112 hw->wiphy->interface_modes =
4113 BIT(NL80211_IFTYPE_STATION) |
4114 BIT(NL80211_IFTYPE_ADHOC);
4115
4116 hw->wiphy->custom_regulatory = true;
4117
4118 hw->wiphy->max_scan_ssids = PROBE_OPTION_MAX_3945;
4119 /* we create the 802.11 header and a zero-length SSID element */
4120 hw->wiphy->max_scan_ie_len = IWL_MAX_PROBE_REQUEST - 24 - 2;
4121
4122 /* Default value; 4 EDCA QOS priorities */
4123 hw->queues = 4;
4124
4125 if (priv->bands[IEEE80211_BAND_2GHZ].n_channels)
4126 priv->hw->wiphy->bands[IEEE80211_BAND_2GHZ] =
4127 &priv->bands[IEEE80211_BAND_2GHZ];
4128
4129 if (priv->bands[IEEE80211_BAND_5GHZ].n_channels)
4130 priv->hw->wiphy->bands[IEEE80211_BAND_5GHZ] =
4131 &priv->bands[IEEE80211_BAND_5GHZ];
4132
4133 ret = ieee80211_register_hw(priv->hw);
4134 if (ret) {
4135 IWL_ERR(priv, "Failed to register hw (error %d)\n", ret);
4136 return ret;
4137 }
4138 priv->mac80211_registered = 1;
4139
4140 return 0;
4141 }
4142
4143 static int iwl3945_pci_probe(struct pci_dev *pdev, const struct pci_device_id *ent)
4144 {
4145 int err = 0;
4146 struct iwl_priv *priv;
4147 struct ieee80211_hw *hw;
4148 struct iwl_cfg *cfg = (struct iwl_cfg *)(ent->driver_data);
4149 struct iwl3945_eeprom *eeprom;
4150 unsigned long flags;
4151
4152 /***********************
4153 * 1. Allocating HW data
4154 * ********************/
4155
4156 /* mac80211 allocates memory for this device instance, including
4157 * space for this driver's private structure */
4158 hw = iwl_alloc_all(cfg, &iwl3945_hw_ops);
4159 if (hw == NULL) {
4160 printk(KERN_ERR DRV_NAME "Can not allocate network device\n");
4161 err = -ENOMEM;
4162 goto out;
4163 }
4164 priv = hw->priv;
4165 SET_IEEE80211_DEV(hw, &pdev->dev);
4166
4167 if ((iwl3945_mod_params.num_of_queues > IWL39_MAX_NUM_QUEUES) ||
4168 (iwl3945_mod_params.num_of_queues < IWL_MIN_NUM_QUEUES)) {
4169 IWL_ERR(priv,
4170 "invalid queues_num, should be between %d and %d\n",
4171 IWL_MIN_NUM_QUEUES, IWL39_MAX_NUM_QUEUES);
4172 err = -EINVAL;
4173 goto out_ieee80211_free_hw;
4174 }
4175
4176 /*
4177 * Disabling hardware scan means that mac80211 will perform scans
4178 * "the hard way", rather than using device's scan.
4179 */
4180 if (iwl3945_mod_params.disable_hw_scan) {
4181 IWL_DEBUG_INFO(priv, "Disabling hw_scan\n");
4182 iwl3945_hw_ops.hw_scan = NULL;
4183 }
4184
4185
4186 IWL_DEBUG_INFO(priv, "*** LOAD DRIVER ***\n");
4187 priv->cfg = cfg;
4188 priv->pci_dev = pdev;
4189 priv->inta_mask = CSR_INI_SET_MASK;
4190
4191 #ifdef CONFIG_IWLWIFI_DEBUG
4192 priv->debug_level = iwl3945_mod_params.debug;
4193 atomic_set(&priv->restrict_refcnt, 0);
4194 #endif
4195
4196 /***************************
4197 * 2. Initializing PCI bus
4198 * *************************/
4199 if (pci_enable_device(pdev)) {
4200 err = -ENODEV;
4201 goto out_ieee80211_free_hw;
4202 }
4203
4204 pci_set_master(pdev);
4205
4206 err = pci_set_dma_mask(pdev, DMA_BIT_MASK(32));
4207 if (!err)
4208 err = pci_set_consistent_dma_mask(pdev, DMA_BIT_MASK(32));
4209 if (err) {
4210 IWL_WARN(priv, "No suitable DMA available.\n");
4211 goto out_pci_disable_device;
4212 }
4213
4214 pci_set_drvdata(pdev, priv);
4215 err = pci_request_regions(pdev, DRV_NAME);
4216 if (err)
4217 goto out_pci_disable_device;
4218
4219 /***********************
4220 * 3. Read REV Register
4221 * ********************/
4222 priv->hw_base = pci_iomap(pdev, 0, 0);
4223 if (!priv->hw_base) {
4224 err = -ENODEV;
4225 goto out_pci_release_regions;
4226 }
4227
4228 IWL_DEBUG_INFO(priv, "pci_resource_len = 0x%08llx\n",
4229 (unsigned long long) pci_resource_len(pdev, 0));
4230 IWL_DEBUG_INFO(priv, "pci_resource_base = %p\n", priv->hw_base);
4231
4232 /* We disable the RETRY_TIMEOUT register (0x41) to keep
4233 * PCI Tx retries from interfering with C3 CPU state */
4234 pci_write_config_byte(pdev, 0x41, 0x00);
4235
4236 /* this spin lock will be used in apm_ops.init and EEPROM access
4237 * we should init now
4238 */
4239 spin_lock_init(&priv->reg_lock);
4240
4241 /* amp init */
4242 err = priv->cfg->ops->lib->apm_ops.init(priv);
4243 if (err < 0) {
4244 IWL_DEBUG_INFO(priv, "Failed to init the card\n");
4245 goto out_iounmap;
4246 }
4247
4248 /***********************
4249 * 4. Read EEPROM
4250 * ********************/
4251
4252 /* Read the EEPROM */
4253 err = iwl_eeprom_init(priv);
4254 if (err) {
4255 IWL_ERR(priv, "Unable to init EEPROM\n");
4256 goto out_iounmap;
4257 }
4258 /* MAC Address location in EEPROM same for 3945/4965 */
4259 eeprom = (struct iwl3945_eeprom *)priv->eeprom;
4260 memcpy(priv->mac_addr, eeprom->mac_address, ETH_ALEN);
4261 IWL_DEBUG_INFO(priv, "MAC address: %pM\n", priv->mac_addr);
4262 SET_IEEE80211_PERM_ADDR(priv->hw, priv->mac_addr);
4263
4264 /***********************
4265 * 5. Setup HW Constants
4266 * ********************/
4267 /* Device-specific setup */
4268 if (iwl3945_hw_set_hw_params(priv)) {
4269 IWL_ERR(priv, "failed to set hw settings\n");
4270 goto out_eeprom_free;
4271 }
4272
4273 /***********************
4274 * 6. Setup priv
4275 * ********************/
4276
4277 err = iwl3945_init_drv(priv);
4278 if (err) {
4279 IWL_ERR(priv, "initializing driver failed\n");
4280 goto out_unset_hw_params;
4281 }
4282
4283 IWL_INFO(priv, "Detected Intel Wireless WiFi Link %s\n",
4284 priv->cfg->name);
4285
4286 /***********************
4287 * 7. Setup Services
4288 * ********************/
4289
4290 spin_lock_irqsave(&priv->lock, flags);
4291 iwl_disable_interrupts(priv);
4292 spin_unlock_irqrestore(&priv->lock, flags);
4293
4294 pci_enable_msi(priv->pci_dev);
4295
4296 err = request_irq(priv->pci_dev->irq, priv->cfg->ops->lib->isr,
4297 IRQF_SHARED, DRV_NAME, priv);
4298 if (err) {
4299 IWL_ERR(priv, "Error allocating IRQ %d\n", priv->pci_dev->irq);
4300 goto out_disable_msi;
4301 }
4302
4303 err = sysfs_create_group(&pdev->dev.kobj, &iwl3945_attribute_group);
4304 if (err) {
4305 IWL_ERR(priv, "failed to create sysfs device attributes\n");
4306 goto out_release_irq;
4307 }
4308
4309 iwl_set_rxon_channel(priv,
4310 &priv->bands[IEEE80211_BAND_2GHZ].channels[5]);
4311 iwl3945_setup_deferred_work(priv);
4312 iwl3945_setup_rx_handlers(priv);
4313
4314 /*********************************
4315 * 8. Setup and Register mac80211
4316 * *******************************/
4317
4318 iwl_enable_interrupts(priv);
4319
4320 err = iwl3945_setup_mac(priv);
4321 if (err)
4322 goto out_remove_sysfs;
4323
4324 err = iwl_dbgfs_register(priv, DRV_NAME);
4325 if (err)
4326 IWL_ERR(priv, "failed to create debugfs files. Ignoring error: %d\n", err);
4327
4328 err = iwl_rfkill_init(priv);
4329 if (err)
4330 IWL_ERR(priv, "Unable to initialize RFKILL system. "
4331 "Ignoring error: %d\n", err);
4332 else
4333 iwl_rfkill_set_hw_state(priv);
4334
4335 /* Start monitoring the killswitch */
4336 queue_delayed_work(priv->workqueue, &priv->rfkill_poll,
4337 2 * HZ);
4338
4339 return 0;
4340
4341 out_remove_sysfs:
4342 destroy_workqueue(priv->workqueue);
4343 priv->workqueue = NULL;
4344 sysfs_remove_group(&pdev->dev.kobj, &iwl3945_attribute_group);
4345 out_release_irq:
4346 free_irq(priv->pci_dev->irq, priv);
4347 out_disable_msi:
4348 pci_disable_msi(priv->pci_dev);
4349 iwlcore_free_geos(priv);
4350 iwl_free_channel_map(priv);
4351 out_unset_hw_params:
4352 iwl3945_unset_hw_params(priv);
4353 out_eeprom_free:
4354 iwl_eeprom_free(priv);
4355 out_iounmap:
4356 pci_iounmap(pdev, priv->hw_base);
4357 out_pci_release_regions:
4358 pci_release_regions(pdev);
4359 out_pci_disable_device:
4360 pci_set_drvdata(pdev, NULL);
4361 pci_disable_device(pdev);
4362 out_ieee80211_free_hw:
4363 ieee80211_free_hw(priv->hw);
4364 out:
4365 return err;
4366 }
4367
4368 static void __devexit iwl3945_pci_remove(struct pci_dev *pdev)
4369 {
4370 struct iwl_priv *priv = pci_get_drvdata(pdev);
4371 unsigned long flags;
4372
4373 if (!priv)
4374 return;
4375
4376 IWL_DEBUG_INFO(priv, "*** UNLOAD DRIVER ***\n");
4377
4378 iwl_dbgfs_unregister(priv);
4379
4380 set_bit(STATUS_EXIT_PENDING, &priv->status);
4381
4382 if (priv->mac80211_registered) {
4383 ieee80211_unregister_hw(priv->hw);
4384 priv->mac80211_registered = 0;
4385 } else {
4386 iwl3945_down(priv);
4387 }
4388
4389 /* make sure we flush any pending irq or
4390 * tasklet for the driver
4391 */
4392 spin_lock_irqsave(&priv->lock, flags);
4393 iwl_disable_interrupts(priv);
4394 spin_unlock_irqrestore(&priv->lock, flags);
4395
4396 iwl_synchronize_irq(priv);
4397
4398 sysfs_remove_group(&pdev->dev.kobj, &iwl3945_attribute_group);
4399
4400 iwl_rfkill_unregister(priv);
4401 cancel_delayed_work_sync(&priv->rfkill_poll);
4402
4403 iwl3945_dealloc_ucode_pci(priv);
4404
4405 if (priv->rxq.bd)
4406 iwl3945_rx_queue_free(priv, &priv->rxq);
4407 iwl3945_hw_txq_ctx_free(priv);
4408
4409 iwl3945_unset_hw_params(priv);
4410 priv->cfg->ops->smgmt->clear_station_table(priv);
4411
4412 /*netif_stop_queue(dev); */
4413 flush_workqueue(priv->workqueue);
4414
4415 /* ieee80211_unregister_hw calls iwl3945_mac_stop, which flushes
4416 * priv->workqueue... so we can't take down the workqueue
4417 * until now... */
4418 destroy_workqueue(priv->workqueue);
4419 priv->workqueue = NULL;
4420
4421 free_irq(pdev->irq, priv);
4422 pci_disable_msi(pdev);
4423
4424 pci_iounmap(pdev, priv->hw_base);
4425 pci_release_regions(pdev);
4426 pci_disable_device(pdev);
4427 pci_set_drvdata(pdev, NULL);
4428
4429 iwl_free_channel_map(priv);
4430 iwlcore_free_geos(priv);
4431 kfree(priv->scan);
4432 if (priv->ibss_beacon)
4433 dev_kfree_skb(priv->ibss_beacon);
4434
4435 ieee80211_free_hw(priv->hw);
4436 }
4437
4438
4439 /*****************************************************************************
4440 *
4441 * driver and module entry point
4442 *
4443 *****************************************************************************/
4444
4445 static struct pci_driver iwl3945_driver = {
4446 .name = DRV_NAME,
4447 .id_table = iwl3945_hw_card_ids,
4448 .probe = iwl3945_pci_probe,
4449 .remove = __devexit_p(iwl3945_pci_remove),
4450 #ifdef CONFIG_PM
4451 .suspend = iwl_pci_suspend,
4452 .resume = iwl_pci_resume,
4453 #endif
4454 };
4455
4456 static int __init iwl3945_init(void)
4457 {
4458
4459 int ret;
4460 printk(KERN_INFO DRV_NAME ": " DRV_DESCRIPTION ", " DRV_VERSION "\n");
4461 printk(KERN_INFO DRV_NAME ": " DRV_COPYRIGHT "\n");
4462
4463 ret = iwl3945_rate_control_register();
4464 if (ret) {
4465 printk(KERN_ERR DRV_NAME
4466 "Unable to register rate control algorithm: %d\n", ret);
4467 return ret;
4468 }
4469
4470 ret = pci_register_driver(&iwl3945_driver);
4471 if (ret) {
4472 printk(KERN_ERR DRV_NAME "Unable to initialize PCI module\n");
4473 goto error_register;
4474 }
4475
4476 return ret;
4477
4478 error_register:
4479 iwl3945_rate_control_unregister();
4480 return ret;
4481 }
4482
4483 static void __exit iwl3945_exit(void)
4484 {
4485 pci_unregister_driver(&iwl3945_driver);
4486 iwl3945_rate_control_unregister();
4487 }
4488
4489 MODULE_FIRMWARE(IWL3945_MODULE_FIRMWARE(IWL3945_UCODE_API_MAX));
4490
4491 module_param_named(antenna, iwl3945_mod_params.antenna, int, 0444);
4492 MODULE_PARM_DESC(antenna, "select antenna (1=Main, 2=Aux, default 0 [both])");
4493 module_param_named(swcrypto, iwl3945_mod_params.sw_crypto, int, 0444);
4494 MODULE_PARM_DESC(swcrypto,
4495 "using software crypto (default 1 [software])\n");
4496 module_param_named(debug, iwl3945_mod_params.debug, uint, 0444);
4497 MODULE_PARM_DESC(debug, "debug output mask");
4498 module_param_named(disable_hw_scan, iwl3945_mod_params.disable_hw_scan, int, 0444);
4499 MODULE_PARM_DESC(disable_hw_scan, "disable hardware scanning (default 0)");
4500
4501 module_param_named(queues_num, iwl3945_mod_params.num_of_queues, int, 0444);
4502 MODULE_PARM_DESC(queues_num, "number of hw queues.");
4503
4504 module_param_named(fw_restart3945, iwl3945_mod_params.restart_fw, int, 0444);
4505 MODULE_PARM_DESC(fw_restart3945, "restart firmware in case of error");
4506
4507 module_exit(iwl3945_exit);
4508 module_init(iwl3945_init);
Linux 2.6 libata-dev (mirror)