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iwlwifi: do proper hw restart
[linux-2.6/linux-acpi-2.6/ibm-acpi-2.6.git] / drivers / net / wireless / iwlwifi / iwl3945-base.c
blob271e5d1f8425e50b291cf9ca87f9e162b770d00e
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 iwl3945_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 iwl3945_hw_key *keyinfo =
582 &priv->stations_39[sta_id].keyinfo;
583
584 switch (keyinfo->alg) {
585 case ALG_CCMP:
586 tx->sec_ctl = TX_CMD_SEC_CCM;
587 memcpy(tx->key, keyinfo->key, keyinfo->keylen);
588 IWL_DEBUG_TX(priv, "tx_cmd with AES hwcrypto\n");
589 break;
590
591 case ALG_TKIP:
592 break;
593
594 case ALG_WEP:
595 tx->sec_ctl = TX_CMD_SEC_WEP |
596 (info->control.hw_key->hw_key_idx & TX_CMD_SEC_MSK) << TX_CMD_SEC_SHIFT;
597
598 if (keyinfo->keylen == 13)
599 tx->sec_ctl |= TX_CMD_SEC_KEY128;
600
601 memcpy(&tx->key[3], keyinfo->key, keyinfo->keylen);
602
603 IWL_DEBUG_TX(priv, "Configuring packet for WEP encryption "
604 "with key %d\n", info->control.hw_key->hw_key_idx);
605 break;
606
607 default:
608 IWL_ERR(priv, "Unknown encode alg %d\n", keyinfo->alg);
609 break;
610 }
611 }
612
613 /*
614 * handle build REPLY_TX command notification.
615 */
616 static void iwl3945_build_tx_cmd_basic(struct iwl_priv *priv,
617 struct iwl_cmd *cmd,
618 struct ieee80211_tx_info *info,
619 struct ieee80211_hdr *hdr, u8 std_id)
620 {
621 struct iwl3945_tx_cmd *tx = (struct iwl3945_tx_cmd *)cmd->cmd.payload;
622 __le32 tx_flags = tx->tx_flags;
623 __le16 fc = hdr->frame_control;
624 u8 rc_flags = info->control.rates[0].flags;
625
626 tx->stop_time.life_time = TX_CMD_LIFE_TIME_INFINITE;
627 if (!(info->flags & IEEE80211_TX_CTL_NO_ACK)) {
628 tx_flags |= TX_CMD_FLG_ACK_MSK;
629 if (ieee80211_is_mgmt(fc))
630 tx_flags |= TX_CMD_FLG_SEQ_CTL_MSK;
631 if (ieee80211_is_probe_resp(fc) &&
632 !(le16_to_cpu(hdr->seq_ctrl) & 0xf))
633 tx_flags |= TX_CMD_FLG_TSF_MSK;
634 } else {
635 tx_flags &= (~TX_CMD_FLG_ACK_MSK);
636 tx_flags |= TX_CMD_FLG_SEQ_CTL_MSK;
637 }
638
639 tx->sta_id = std_id;
640 if (ieee80211_has_morefrags(fc))
641 tx_flags |= TX_CMD_FLG_MORE_FRAG_MSK;
642
643 if (ieee80211_is_data_qos(fc)) {
644 u8 *qc = ieee80211_get_qos_ctl(hdr);
645 tx->tid_tspec = qc[0] & 0xf;
646 tx_flags &= ~TX_CMD_FLG_SEQ_CTL_MSK;
647 } else {
648 tx_flags |= TX_CMD_FLG_SEQ_CTL_MSK;
649 }
650
651 if (rc_flags & IEEE80211_TX_RC_USE_RTS_CTS) {
652 tx_flags |= TX_CMD_FLG_RTS_MSK;
653 tx_flags &= ~TX_CMD_FLG_CTS_MSK;
654 } else if (rc_flags & IEEE80211_TX_RC_USE_CTS_PROTECT) {
655 tx_flags &= ~TX_CMD_FLG_RTS_MSK;
656 tx_flags |= TX_CMD_FLG_CTS_MSK;
657 }
658
659 if ((tx_flags & TX_CMD_FLG_RTS_MSK) || (tx_flags & TX_CMD_FLG_CTS_MSK))
660 tx_flags |= TX_CMD_FLG_FULL_TXOP_PROT_MSK;
661
662 tx_flags &= ~(TX_CMD_FLG_ANT_SEL_MSK);
663 if (ieee80211_is_mgmt(fc)) {
664 if (ieee80211_is_assoc_req(fc) || ieee80211_is_reassoc_req(fc))
665 tx->timeout.pm_frame_timeout = cpu_to_le16(3);
666 else
667 tx->timeout.pm_frame_timeout = cpu_to_le16(2);
668 } else {
669 tx->timeout.pm_frame_timeout = 0;
670 #ifdef CONFIG_IWLWIFI_LEDS
671 priv->rxtxpackets += le16_to_cpu(cmd->cmd.tx.len);
672 #endif
673 }
674
675 tx->driver_txop = 0;
676 tx->tx_flags = tx_flags;
677 tx->next_frame_len = 0;
678 }
679
680 /*
681 * start REPLY_TX command process
682 */
683 static int iwl3945_tx_skb(struct iwl_priv *priv, struct sk_buff *skb)
684 {
685 struct ieee80211_hdr *hdr = (struct ieee80211_hdr *)skb->data;
686 struct ieee80211_tx_info *info = IEEE80211_SKB_CB(skb);
687 struct iwl3945_tx_cmd *tx;
688 struct iwl_tx_queue *txq = NULL;
689 struct iwl_queue *q = NULL;
690 struct iwl_cmd *out_cmd = NULL;
691 dma_addr_t phys_addr;
692 dma_addr_t txcmd_phys;
693 int txq_id = skb_get_queue_mapping(skb);
694 u16 len, idx, len_org, hdr_len; /* TODO: len_org is not used */
695 u8 id;
696 u8 unicast;
697 u8 sta_id;
698 u8 tid = 0;
699 u16 seq_number = 0;
700 __le16 fc;
701 u8 wait_write_ptr = 0;
702 u8 *qc = NULL;
703 unsigned long flags;
704 int rc;
705
706 spin_lock_irqsave(&priv->lock, flags);
707 if (iwl_is_rfkill(priv)) {
708 IWL_DEBUG_DROP(priv, "Dropping - RF KILL\n");
709 goto drop_unlock;
710 }
711
712 if ((ieee80211_get_tx_rate(priv->hw, info)->hw_value & 0xFF) == IWL_INVALID_RATE) {
713 IWL_ERR(priv, "ERROR: No TX rate available.\n");
714 goto drop_unlock;
715 }
716
717 unicast = !is_multicast_ether_addr(hdr->addr1);
718 id = 0;
719
720 fc = hdr->frame_control;
721
722 #ifdef CONFIG_IWLWIFI_DEBUG
723 if (ieee80211_is_auth(fc))
724 IWL_DEBUG_TX(priv, "Sending AUTH frame\n");
725 else if (ieee80211_is_assoc_req(fc))
726 IWL_DEBUG_TX(priv, "Sending ASSOC frame\n");
727 else if (ieee80211_is_reassoc_req(fc))
728 IWL_DEBUG_TX(priv, "Sending REASSOC frame\n");
729 #endif
730
731 /* drop all data frame if we are not associated */
732 if (ieee80211_is_data(fc) &&
733 (!iwl_is_monitor_mode(priv)) && /* packet injection */
734 (!iwl_is_associated(priv) ||
735 ((priv->iw_mode == NL80211_IFTYPE_STATION) && !priv->assoc_id))) {
736 IWL_DEBUG_DROP(priv, "Dropping - !iwl_is_associated\n");
737 goto drop_unlock;
738 }
739
740 spin_unlock_irqrestore(&priv->lock, flags);
741
742 hdr_len = ieee80211_hdrlen(fc);
743
744 /* Find (or create) index into station table for destination station */
745 sta_id = iwl_get_sta_id(priv, hdr);
746 if (sta_id == IWL_INVALID_STATION) {
747 IWL_DEBUG_DROP(priv, "Dropping - INVALID STATION: %pM\n",
748 hdr->addr1);
749 goto drop;
750 }
751
752 IWL_DEBUG_RATE(priv, "station Id %d\n", sta_id);
753
754 if (ieee80211_is_data_qos(fc)) {
755 qc = ieee80211_get_qos_ctl(hdr);
756 tid = qc[0] & IEEE80211_QOS_CTL_TID_MASK;
757 seq_number = priv->stations_39[sta_id].tid[tid].seq_number &
758 IEEE80211_SCTL_SEQ;
759 hdr->seq_ctrl = cpu_to_le16(seq_number) |
760 (hdr->seq_ctrl &
761 cpu_to_le16(IEEE80211_SCTL_FRAG));
762 seq_number += 0x10;
763 }
764
765 /* Descriptor for chosen Tx queue */
766 txq = &priv->txq[txq_id];
767 q = &txq->q;
768
769 spin_lock_irqsave(&priv->lock, flags);
770
771 idx = get_cmd_index(q, q->write_ptr, 0);
772
773 /* Set up driver data for this TFD */
774 memset(&(txq->txb[q->write_ptr]), 0, sizeof(struct iwl_tx_info));
775 txq->txb[q->write_ptr].skb[0] = skb;
776
777 /* Init first empty entry in queue's array of Tx/cmd buffers */
778 out_cmd = txq->cmd[idx];
779 tx = (struct iwl3945_tx_cmd *)out_cmd->cmd.payload;
780 memset(&out_cmd->hdr, 0, sizeof(out_cmd->hdr));
781 memset(tx, 0, sizeof(*tx));
782
783 /*
784 * Set up the Tx-command (not MAC!) header.
785 * Store the chosen Tx queue and TFD index within the sequence field;
786 * after Tx, uCode's Tx response will return this value so driver can
787 * locate the frame within the tx queue and do post-tx processing.
788 */
789 out_cmd->hdr.cmd = REPLY_TX;
790 out_cmd->hdr.sequence = cpu_to_le16((u16)(QUEUE_TO_SEQ(txq_id) |
791 INDEX_TO_SEQ(q->write_ptr)));
792
793 /* Copy MAC header from skb into command buffer */
794 memcpy(tx->hdr, hdr, hdr_len);
795
796
797 if (info->control.hw_key)
798 iwl3945_build_tx_cmd_hwcrypto(priv, info, out_cmd, skb, sta_id);
799
800 /* TODO need this for burst mode later on */
801 iwl3945_build_tx_cmd_basic(priv, out_cmd, info, hdr, sta_id);
802
803 /* set is_hcca to 0; it probably will never be implemented */
804 iwl3945_hw_build_tx_cmd_rate(priv, out_cmd, info, hdr, sta_id, 0);
805
806 /* Total # bytes to be transmitted */
807 len = (u16)skb->len;
808 tx->len = cpu_to_le16(len);
809
810
811 tx->tx_flags &= ~TX_CMD_FLG_ANT_A_MSK;
812 tx->tx_flags &= ~TX_CMD_FLG_ANT_B_MSK;
813
814 if (!ieee80211_has_morefrags(hdr->frame_control)) {
815 txq->need_update = 1;
816 if (qc)
817 priv->stations_39[sta_id].tid[tid].seq_number = seq_number;
818 } else {
819 wait_write_ptr = 1;
820 txq->need_update = 0;
821 }
822
823 IWL_DEBUG_TX(priv, "sequence nr = 0X%x \n",
824 le16_to_cpu(out_cmd->hdr.sequence));
825 IWL_DEBUG_TX(priv, "tx_flags = 0X%x \n", le32_to_cpu(tx->tx_flags));
826 iwl_print_hex_dump(priv, IWL_DL_TX, tx, sizeof(*tx));
827 iwl_print_hex_dump(priv, IWL_DL_TX, (u8 *)tx->hdr,
828 ieee80211_hdrlen(fc));
829
830 /*
831 * Use the first empty entry in this queue's command buffer array
832 * to contain the Tx command and MAC header concatenated together
833 * (payload data will be in another buffer).
834 * Size of this varies, due to varying MAC header length.
835 * If end is not dword aligned, we'll have 2 extra bytes at the end
836 * of the MAC header (device reads on dword boundaries).
837 * We'll tell device about this padding later.
838 */
839 len = sizeof(struct iwl3945_tx_cmd) +
840 sizeof(struct iwl_cmd_header) + hdr_len;
841
842 len_org = len;
843 len = (len + 3) & ~3;
844
845 if (len_org != len)
846 len_org = 1;
847 else
848 len_org = 0;
849
850 /* Physical address of this Tx command's header (not MAC header!),
851 * within command buffer array. */
852 txcmd_phys = pci_map_single(priv->pci_dev, &out_cmd->hdr,
853 len, PCI_DMA_TODEVICE);
854 /* we do not map meta data ... so we can safely access address to
855 * provide to unmap command*/
856 pci_unmap_addr_set(&out_cmd->meta, mapping, txcmd_phys);
857 pci_unmap_len_set(&out_cmd->meta, len, len);
858
859 /* Add buffer containing Tx command and MAC(!) header to TFD's
860 * first entry */
861 priv->cfg->ops->lib->txq_attach_buf_to_tfd(priv, txq,
862 txcmd_phys, len, 1, 0);
863
864
865 /* Set up TFD's 2nd entry to point directly to remainder of skb,
866 * if any (802.11 null frames have no payload). */
867 len = skb->len - hdr_len;
868 if (len) {
869 phys_addr = pci_map_single(priv->pci_dev, skb->data + hdr_len,
870 len, PCI_DMA_TODEVICE);
871 priv->cfg->ops->lib->txq_attach_buf_to_tfd(priv, txq,
872 phys_addr, len,
873 0, U32_PAD(len));
874 }
875
876
877 /* Tell device the write index *just past* this latest filled TFD */
878 q->write_ptr = iwl_queue_inc_wrap(q->write_ptr, q->n_bd);
879 rc = iwl_txq_update_write_ptr(priv, txq);
880 spin_unlock_irqrestore(&priv->lock, flags);
881
882 if (rc)
883 return rc;
884
885 if ((iwl_queue_space(q) < q->high_mark)
886 && priv->mac80211_registered) {
887 if (wait_write_ptr) {
888 spin_lock_irqsave(&priv->lock, flags);
889 txq->need_update = 1;
890 iwl_txq_update_write_ptr(priv, txq);
891 spin_unlock_irqrestore(&priv->lock, flags);
892 }
893
894 iwl_stop_queue(priv, skb_get_queue_mapping(skb));
895 }
896
897 return 0;
898
899 drop_unlock:
900 spin_unlock_irqrestore(&priv->lock, flags);
901 drop:
902 return -1;
903 }
904
905 #ifdef CONFIG_IWL3945_SPECTRUM_MEASUREMENT
906
907 #include "iwl-spectrum.h"
908
909 #define BEACON_TIME_MASK_LOW 0x00FFFFFF
910 #define BEACON_TIME_MASK_HIGH 0xFF000000
911 #define TIME_UNIT 1024
912
913 /*
914 * extended beacon time format
915 * time in usec will be changed into a 32-bit value in 8:24 format
916 * the high 1 byte is the beacon counts
917 * the lower 3 bytes is the time in usec within one beacon interval
918 */
919
920 static u32 iwl3945_usecs_to_beacons(u32 usec, u32 beacon_interval)
921 {
922 u32 quot;
923 u32 rem;
924 u32 interval = beacon_interval * 1024;
925
926 if (!interval || !usec)
927 return 0;
928
929 quot = (usec / interval) & (BEACON_TIME_MASK_HIGH >> 24);
930 rem = (usec % interval) & BEACON_TIME_MASK_LOW;
931
932 return (quot << 24) + rem;
933 }
934
935 /* base is usually what we get from ucode with each received frame,
936 * the same as HW timer counter counting down
937 */
938
939 static __le32 iwl3945_add_beacon_time(u32 base, u32 addon, u32 beacon_interval)
940 {
941 u32 base_low = base & BEACON_TIME_MASK_LOW;
942 u32 addon_low = addon & BEACON_TIME_MASK_LOW;
943 u32 interval = beacon_interval * TIME_UNIT;
944 u32 res = (base & BEACON_TIME_MASK_HIGH) +
945 (addon & BEACON_TIME_MASK_HIGH);
946
947 if (base_low > addon_low)
948 res += base_low - addon_low;
949 else if (base_low < addon_low) {
950 res += interval + base_low - addon_low;
951 res += (1 << 24);
952 } else
953 res += (1 << 24);
954
955 return cpu_to_le32(res);
956 }
957
958 static int iwl3945_get_measurement(struct iwl_priv *priv,
959 struct ieee80211_measurement_params *params,
960 u8 type)
961 {
962 struct iwl_spectrum_cmd spectrum;
963 struct iwl_rx_packet *res;
964 struct iwl_host_cmd cmd = {
965 .id = REPLY_SPECTRUM_MEASUREMENT_CMD,
966 .data = (void *)&spectrum,
967 .meta.flags = CMD_WANT_SKB,
968 };
969 u32 add_time = le64_to_cpu(params->start_time);
970 int rc;
971 int spectrum_resp_status;
972 int duration = le16_to_cpu(params->duration);
973
974 if (iwl_is_associated(priv))
975 add_time =
976 iwl3945_usecs_to_beacons(
977 le64_to_cpu(params->start_time) - priv->last_tsf,
978 le16_to_cpu(priv->rxon_timing.beacon_interval));
979
980 memset(&spectrum, 0, sizeof(spectrum));
981
982 spectrum.channel_count = cpu_to_le16(1);
983 spectrum.flags =
984 RXON_FLG_TSF2HOST_MSK | RXON_FLG_ANT_A_MSK | RXON_FLG_DIS_DIV_MSK;
985 spectrum.filter_flags = MEASUREMENT_FILTER_FLAG;
986 cmd.len = sizeof(spectrum);
987 spectrum.len = cpu_to_le16(cmd.len - sizeof(spectrum.len));
988
989 if (iwl_is_associated(priv))
990 spectrum.start_time =
991 iwl3945_add_beacon_time(priv->last_beacon_time,
992 add_time,
993 le16_to_cpu(priv->rxon_timing.beacon_interval));
994 else
995 spectrum.start_time = 0;
996
997 spectrum.channels[0].duration = cpu_to_le32(duration * TIME_UNIT);
998 spectrum.channels[0].channel = params->channel;
999 spectrum.channels[0].type = type;
1000 if (priv->active_rxon.flags & RXON_FLG_BAND_24G_MSK)
1001 spectrum.flags |= RXON_FLG_BAND_24G_MSK |
1002 RXON_FLG_AUTO_DETECT_MSK | RXON_FLG_TGG_PROTECT_MSK;
1003
1004 rc = iwl_send_cmd_sync(priv, &cmd);
1005 if (rc)
1006 return rc;
1007
1008 res = (struct iwl_rx_packet *)cmd.meta.u.skb->data;
1009 if (res->hdr.flags & IWL_CMD_FAILED_MSK) {
1010 IWL_ERR(priv, "Bad return from REPLY_RX_ON_ASSOC command\n");
1011 rc = -EIO;
1012 }
1013
1014 spectrum_resp_status = le16_to_cpu(res->u.spectrum.status);
1015 switch (spectrum_resp_status) {
1016 case 0: /* Command will be handled */
1017 if (res->u.spectrum.id != 0xff) {
1018 IWL_DEBUG_INFO(priv, "Replaced existing measurement: %d\n",
1019 res->u.spectrum.id);
1020 priv->measurement_status &= ~MEASUREMENT_READY;
1021 }
1022 priv->measurement_status |= MEASUREMENT_ACTIVE;
1023 rc = 0;
1024 break;
1025
1026 case 1: /* Command will not be handled */
1027 rc = -EAGAIN;
1028 break;
1029 }
1030
1031 dev_kfree_skb_any(cmd.meta.u.skb);
1032
1033 return rc;
1034 }
1035 #endif
1036
1037 static void iwl3945_rx_reply_alive(struct iwl_priv *priv,
1038 struct iwl_rx_mem_buffer *rxb)
1039 {
1040 struct iwl_rx_packet *pkt = (void *)rxb->skb->data;
1041 struct iwl_alive_resp *palive;
1042 struct delayed_work *pwork;
1043
1044 palive = &pkt->u.alive_frame;
1045
1046 IWL_DEBUG_INFO(priv, "Alive ucode status 0x%08X revision "
1047 "0x%01X 0x%01X\n",
1048 palive->is_valid, palive->ver_type,
1049 palive->ver_subtype);
1050
1051 if (palive->ver_subtype == INITIALIZE_SUBTYPE) {
1052 IWL_DEBUG_INFO(priv, "Initialization Alive received.\n");
1053 memcpy(&priv->card_alive_init, &pkt->u.alive_frame,
1054 sizeof(struct iwl_alive_resp));
1055 pwork = &priv->init_alive_start;
1056 } else {
1057 IWL_DEBUG_INFO(priv, "Runtime Alive received.\n");
1058 memcpy(&priv->card_alive, &pkt->u.alive_frame,
1059 sizeof(struct iwl_alive_resp));
1060 pwork = &priv->alive_start;
1061 iwl3945_disable_events(priv);
1062 }
1063
1064 /* We delay the ALIVE response by 5ms to
1065 * give the HW RF Kill time to activate... */
1066 if (palive->is_valid == UCODE_VALID_OK)
1067 queue_delayed_work(priv->workqueue, pwork,
1068 msecs_to_jiffies(5));
1069 else
1070 IWL_WARN(priv, "uCode did not respond OK.\n");
1071 }
1072
1073 static void iwl3945_rx_reply_add_sta(struct iwl_priv *priv,
1074 struct iwl_rx_mem_buffer *rxb)
1075 {
1076 #ifdef CONFIG_IWLWIFI_DEBUG
1077 struct iwl_rx_packet *pkt = (void *)rxb->skb->data;
1078 #endif
1079
1080 IWL_DEBUG_RX(priv, "Received REPLY_ADD_STA: 0x%02X\n", pkt->u.status);
1081 return;
1082 }
1083
1084 static void iwl3945_bg_beacon_update(struct work_struct *work)
1085 {
1086 struct iwl_priv *priv =
1087 container_of(work, struct iwl_priv, beacon_update);
1088 struct sk_buff *beacon;
1089
1090 /* Pull updated AP beacon from mac80211. will fail if not in AP mode */
1091 beacon = ieee80211_beacon_get(priv->hw, priv->vif);
1092
1093 if (!beacon) {
1094 IWL_ERR(priv, "update beacon failed\n");
1095 return;
1096 }
1097
1098 mutex_lock(&priv->mutex);
1099 /* new beacon skb is allocated every time; dispose previous.*/
1100 if (priv->ibss_beacon)
1101 dev_kfree_skb(priv->ibss_beacon);
1102
1103 priv->ibss_beacon = beacon;
1104 mutex_unlock(&priv->mutex);
1105
1106 iwl3945_send_beacon_cmd(priv);
1107 }
1108
1109 static void iwl3945_rx_beacon_notif(struct iwl_priv *priv,
1110 struct iwl_rx_mem_buffer *rxb)
1111 {
1112 #ifdef CONFIG_IWLWIFI_DEBUG
1113 struct iwl_rx_packet *pkt = (void *)rxb->skb->data;
1114 struct iwl3945_beacon_notif *beacon = &(pkt->u.beacon_status);
1115 u8 rate = beacon->beacon_notify_hdr.rate;
1116
1117 IWL_DEBUG_RX(priv, "beacon status %x retries %d iss %d "
1118 "tsf %d %d rate %d\n",
1119 le32_to_cpu(beacon->beacon_notify_hdr.status) & TX_STATUS_MSK,
1120 beacon->beacon_notify_hdr.failure_frame,
1121 le32_to_cpu(beacon->ibss_mgr_status),
1122 le32_to_cpu(beacon->high_tsf),
1123 le32_to_cpu(beacon->low_tsf), rate);
1124 #endif
1125
1126 if ((priv->iw_mode == NL80211_IFTYPE_AP) &&
1127 (!test_bit(STATUS_EXIT_PENDING, &priv->status)))
1128 queue_work(priv->workqueue, &priv->beacon_update);
1129 }
1130
1131 /* Handle notification from uCode that card's power state is changing
1132 * due to software, hardware, or critical temperature RFKILL */
1133 static void iwl3945_rx_card_state_notif(struct iwl_priv *priv,
1134 struct iwl_rx_mem_buffer *rxb)
1135 {
1136 struct iwl_rx_packet *pkt = (void *)rxb->skb->data;
1137 u32 flags = le32_to_cpu(pkt->u.card_state_notif.flags);
1138 unsigned long status = priv->status;
1139
1140 IWL_DEBUG_RF_KILL(priv, "Card state received: HW:%s SW:%s\n",
1141 (flags & HW_CARD_DISABLED) ? "Kill" : "On",
1142 (flags & SW_CARD_DISABLED) ? "Kill" : "On");
1143
1144 iwl_write32(priv, CSR_UCODE_DRV_GP1_SET,
1145 CSR_UCODE_DRV_GP1_BIT_CMD_BLOCKED);
1146
1147 if (flags & HW_CARD_DISABLED)
1148 set_bit(STATUS_RF_KILL_HW, &priv->status);
1149 else
1150 clear_bit(STATUS_RF_KILL_HW, &priv->status);
1151
1152
1153 if (flags & SW_CARD_DISABLED)
1154 set_bit(STATUS_RF_KILL_SW, &priv->status);
1155 else
1156 clear_bit(STATUS_RF_KILL_SW, &priv->status);
1157
1158 iwl_scan_cancel(priv);
1159
1160 if ((test_bit(STATUS_RF_KILL_HW, &status) !=
1161 test_bit(STATUS_RF_KILL_HW, &priv->status)) ||
1162 (test_bit(STATUS_RF_KILL_SW, &status) !=
1163 test_bit(STATUS_RF_KILL_SW, &priv->status)))
1164 queue_work(priv->workqueue, &priv->rf_kill);
1165 else
1166 wake_up_interruptible(&priv->wait_command_queue);
1167 }
1168
1169 /**
1170 * iwl3945_setup_rx_handlers - Initialize Rx handler callbacks
1171 *
1172 * Setup the RX handlers for each of the reply types sent from the uCode
1173 * to the host.
1174 *
1175 * This function chains into the hardware specific files for them to setup
1176 * any hardware specific handlers as well.
1177 */
1178 static void iwl3945_setup_rx_handlers(struct iwl_priv *priv)
1179 {
1180 priv->rx_handlers[REPLY_ALIVE] = iwl3945_rx_reply_alive;
1181 priv->rx_handlers[REPLY_ADD_STA] = iwl3945_rx_reply_add_sta;
1182 priv->rx_handlers[REPLY_ERROR] = iwl_rx_reply_error;
1183 priv->rx_handlers[CHANNEL_SWITCH_NOTIFICATION] = iwl_rx_csa;
1184 priv->rx_handlers[PM_SLEEP_NOTIFICATION] = iwl_rx_pm_sleep_notif;
1185 priv->rx_handlers[PM_DEBUG_STATISTIC_NOTIFIC] =
1186 iwl_rx_pm_debug_statistics_notif;
1187 priv->rx_handlers[BEACON_NOTIFICATION] = iwl3945_rx_beacon_notif;
1188
1189 /*
1190 * The same handler is used for both the REPLY to a discrete
1191 * statistics request from the host as well as for the periodic
1192 * statistics notifications (after received beacons) from the uCode.
1193 */
1194 priv->rx_handlers[REPLY_STATISTICS_CMD] = iwl3945_hw_rx_statistics;
1195 priv->rx_handlers[STATISTICS_NOTIFICATION] = iwl3945_hw_rx_statistics;
1196
1197 iwl_setup_spectrum_handlers(priv);
1198 iwl_setup_rx_scan_handlers(priv);
1199 priv->rx_handlers[CARD_STATE_NOTIFICATION] = iwl3945_rx_card_state_notif;
1200
1201 /* Set up hardware specific Rx handlers */
1202 iwl3945_hw_rx_handler_setup(priv);
1203 }
1204
1205 /************************** RX-FUNCTIONS ****************************/
1206 /*
1207 * Rx theory of operation
1208 *
1209 * The host allocates 32 DMA target addresses and passes the host address
1210 * to the firmware at register IWL_RFDS_TABLE_LOWER + N * RFD_SIZE where N is
1211 * 0 to 31
1212 *
1213 * Rx Queue Indexes
1214 * The host/firmware share two index registers for managing the Rx buffers.
1215 *
1216 * The READ index maps to the first position that the firmware may be writing
1217 * to -- the driver can read up to (but not including) this position and get
1218 * good data.
1219 * The READ index is managed by the firmware once the card is enabled.
1220 *
1221 * The WRITE index maps to the last position the driver has read from -- the
1222 * position preceding WRITE is the last slot the firmware can place a packet.
1223 *
1224 * The queue is empty (no good data) if WRITE = READ - 1, and is full if
1225 * WRITE = READ.
1226 *
1227 * During initialization, the host sets up the READ queue position to the first
1228 * INDEX position, and WRITE to the last (READ - 1 wrapped)
1229 *
1230 * When the firmware places a packet in a buffer, it will advance the READ index
1231 * and fire the RX interrupt. The driver can then query the READ index and
1232 * process as many packets as possible, moving the WRITE index forward as it
1233 * resets the Rx queue buffers with new memory.
1234 *
1235 * The management in the driver is as follows:
1236 * + A list of pre-allocated SKBs is stored in iwl->rxq->rx_free. When
1237 * iwl->rxq->free_count drops to or below RX_LOW_WATERMARK, work is scheduled
1238 * to replenish the iwl->rxq->rx_free.
1239 * + In iwl3945_rx_replenish (scheduled) if 'processed' != 'read' then the
1240 * iwl->rxq is replenished and the READ INDEX is updated (updating the
1241 * 'processed' and 'read' driver indexes as well)
1242 * + A received packet is processed and handed to the kernel network stack,
1243 * detached from the iwl->rxq. The driver 'processed' index is updated.
1244 * + The Host/Firmware iwl->rxq is replenished at tasklet time from the rx_free
1245 * list. If there are no allocated buffers in iwl->rxq->rx_free, the READ
1246 * INDEX is not incremented and iwl->status(RX_STALLED) is set. If there
1247 * were enough free buffers and RX_STALLED is set it is cleared.
1248 *
1249 *
1250 * Driver sequence:
1251 *
1252 * iwl3945_rx_replenish() Replenishes rx_free list from rx_used, and calls
1253 * iwl3945_rx_queue_restock
1254 * iwl3945_rx_queue_restock() Moves available buffers from rx_free into Rx
1255 * queue, updates firmware pointers, and updates
1256 * the WRITE index. If insufficient rx_free buffers
1257 * are available, schedules iwl3945_rx_replenish
1258 *
1259 * -- enable interrupts --
1260 * ISR - iwl3945_rx() Detach iwl_rx_mem_buffers from pool up to the
1261 * READ INDEX, detaching the SKB from the pool.
1262 * Moves the packet buffer from queue to rx_used.
1263 * Calls iwl3945_rx_queue_restock to refill any empty
1264 * slots.
1265 * ...
1266 *
1267 */
1268
1269 /**
1270 * iwl3945_dma_addr2rbd_ptr - convert a DMA address to a uCode read buffer ptr
1271 */
1272 static inline __le32 iwl3945_dma_addr2rbd_ptr(struct iwl_priv *priv,
1273 dma_addr_t dma_addr)
1274 {
1275 return cpu_to_le32((u32)dma_addr);
1276 }
1277
1278 /**
1279 * iwl3945_rx_queue_restock - refill RX queue from pre-allocated pool
1280 *
1281 * If there are slots in the RX queue that need to be restocked,
1282 * and we have free pre-allocated buffers, fill the ranks as much
1283 * as we can, pulling from rx_free.
1284 *
1285 * This moves the 'write' index forward to catch up with 'processed', and
1286 * also updates the memory address in the firmware to reference the new
1287 * target buffer.
1288 */
1289 static int iwl3945_rx_queue_restock(struct iwl_priv *priv)
1290 {
1291 struct iwl_rx_queue *rxq = &priv->rxq;
1292 struct list_head *element;
1293 struct iwl_rx_mem_buffer *rxb;
1294 unsigned long flags;
1295 int write, rc;
1296
1297 spin_lock_irqsave(&rxq->lock, flags);
1298 write = rxq->write & ~0x7;
1299 while ((iwl_rx_queue_space(rxq) > 0) && (rxq->free_count)) {
1300 /* Get next free Rx buffer, remove from free list */
1301 element = rxq->rx_free.next;
1302 rxb = list_entry(element, struct iwl_rx_mem_buffer, list);
1303 list_del(element);
1304
1305 /* Point to Rx buffer via next RBD in circular buffer */
1306 rxq->bd[rxq->write] = iwl3945_dma_addr2rbd_ptr(priv, rxb->real_dma_addr);
1307 rxq->queue[rxq->write] = rxb;
1308 rxq->write = (rxq->write + 1) & RX_QUEUE_MASK;
1309 rxq->free_count--;
1310 }
1311 spin_unlock_irqrestore(&rxq->lock, flags);
1312 /* If the pre-allocated buffer pool is dropping low, schedule to
1313 * refill it */
1314 if (rxq->free_count <= RX_LOW_WATERMARK)
1315 queue_work(priv->workqueue, &priv->rx_replenish);
1316
1317
1318 /* If we've added more space for the firmware to place data, tell it.
1319 * Increment device's write pointer in multiples of 8. */
1320 if ((write != (rxq->write & ~0x7))
1321 || (abs(rxq->write - rxq->read) > 7)) {
1322 spin_lock_irqsave(&rxq->lock, flags);
1323 rxq->need_update = 1;
1324 spin_unlock_irqrestore(&rxq->lock, flags);
1325 rc = iwl_rx_queue_update_write_ptr(priv, rxq);
1326 if (rc)
1327 return rc;
1328 }
1329
1330 return 0;
1331 }
1332
1333 /**
1334 * iwl3945_rx_replenish - Move all used packet from rx_used to rx_free
1335 *
1336 * When moving to rx_free an SKB is allocated for the slot.
1337 *
1338 * Also restock the Rx queue via iwl3945_rx_queue_restock.
1339 * This is called as a scheduled work item (except for during initialization)
1340 */
1341 static void iwl3945_rx_allocate(struct iwl_priv *priv)
1342 {
1343 struct iwl_rx_queue *rxq = &priv->rxq;
1344 struct list_head *element;
1345 struct iwl_rx_mem_buffer *rxb;
1346 unsigned long flags;
1347
1348 while (1) {
1349 spin_lock_irqsave(&rxq->lock, flags);
1350
1351 if (list_empty(&rxq->rx_used)) {
1352 spin_unlock_irqrestore(&rxq->lock, flags);
1353 return;
1354 }
1355
1356 element = rxq->rx_used.next;
1357 rxb = list_entry(element, struct iwl_rx_mem_buffer, list);
1358 list_del(element);
1359 spin_unlock_irqrestore(&rxq->lock, flags);
1360
1361 /* Alloc a new receive buffer */
1362 rxb->skb =
1363 alloc_skb(priv->hw_params.rx_buf_size,
1364 GFP_KERNEL);
1365 if (!rxb->skb) {
1366 if (net_ratelimit())
1367 IWL_CRIT(priv, ": Can not allocate SKB buffers\n");
1368 /* We don't reschedule replenish work here -- we will
1369 * call the restock method and if it still needs
1370 * more buffers it will schedule replenish */
1371 break;
1372 }
1373
1374 /* If radiotap head is required, reserve some headroom here.
1375 * The physical head count is a variable rx_stats->phy_count.
1376 * We reserve 4 bytes here. Plus these extra bytes, the
1377 * headroom of the physical head should be enough for the
1378 * radiotap head that iwl3945 supported. See iwl3945_rt.
1379 */
1380 skb_reserve(rxb->skb, 4);
1381
1382 /* Get physical address of RB/SKB */
1383 rxb->real_dma_addr = pci_map_single(priv->pci_dev,
1384 rxb->skb->data,
1385 priv->hw_params.rx_buf_size,
1386 PCI_DMA_FROMDEVICE);
1387
1388 spin_lock_irqsave(&rxq->lock, flags);
1389 list_add_tail(&rxb->list, &rxq->rx_free);
1390 priv->alloc_rxb_skb++;
1391 rxq->free_count++;
1392 spin_unlock_irqrestore(&rxq->lock, flags);
1393 }
1394 }
1395
1396 void iwl3945_rx_queue_reset(struct iwl_priv *priv, struct iwl_rx_queue *rxq)
1397 {
1398 unsigned long flags;
1399 int i;
1400 spin_lock_irqsave(&rxq->lock, flags);
1401 INIT_LIST_HEAD(&rxq->rx_free);
1402 INIT_LIST_HEAD(&rxq->rx_used);
1403 /* Fill the rx_used queue with _all_ of the Rx buffers */
1404 for (i = 0; i < RX_FREE_BUFFERS + RX_QUEUE_SIZE; i++) {
1405 /* In the reset function, these buffers may have been allocated
1406 * to an SKB, so we need to unmap and free potential storage */
1407 if (rxq->pool[i].skb != NULL) {
1408 pci_unmap_single(priv->pci_dev,
1409 rxq->pool[i].real_dma_addr,
1410 priv->hw_params.rx_buf_size,
1411 PCI_DMA_FROMDEVICE);
1412 priv->alloc_rxb_skb--;
1413 dev_kfree_skb(rxq->pool[i].skb);
1414 rxq->pool[i].skb = NULL;
1415 }
1416 list_add_tail(&rxq->pool[i].list, &rxq->rx_used);
1417 }
1418
1419 /* Set us so that we have processed and used all buffers, but have
1420 * not restocked the Rx queue with fresh buffers */
1421 rxq->read = rxq->write = 0;
1422 rxq->free_count = 0;
1423 spin_unlock_irqrestore(&rxq->lock, flags);
1424 }
1425
1426 void iwl3945_rx_replenish(void *data)
1427 {
1428 struct iwl_priv *priv = data;
1429 unsigned long flags;
1430
1431 iwl3945_rx_allocate(priv);
1432
1433 spin_lock_irqsave(&priv->lock, flags);
1434 iwl3945_rx_queue_restock(priv);
1435 spin_unlock_irqrestore(&priv->lock, flags);
1436 }
1437
1438 /* Assumes that the skb field of the buffers in 'pool' is kept accurate.
1439 * If an SKB has been detached, the POOL needs to have its SKB set to NULL
1440 * This free routine walks the list of POOL entries and if SKB is set to
1441 * non NULL it is unmapped and freed
1442 */
1443 static void iwl3945_rx_queue_free(struct iwl_priv *priv, struct iwl_rx_queue *rxq)
1444 {
1445 int i;
1446 for (i = 0; i < RX_QUEUE_SIZE + RX_FREE_BUFFERS; i++) {
1447 if (rxq->pool[i].skb != NULL) {
1448 pci_unmap_single(priv->pci_dev,
1449 rxq->pool[i].real_dma_addr,
1450 priv->hw_params.rx_buf_size,
1451 PCI_DMA_FROMDEVICE);
1452 dev_kfree_skb(rxq->pool[i].skb);
1453 }
1454 }
1455
1456 pci_free_consistent(priv->pci_dev, 4 * RX_QUEUE_SIZE, rxq->bd,
1457 rxq->dma_addr);
1458 pci_free_consistent(priv->pci_dev, sizeof(struct iwl_rb_status),
1459 rxq->rb_stts, rxq->rb_stts_dma);
1460 rxq->bd = NULL;
1461 rxq->rb_stts = NULL;
1462 }
1463
1464
1465 /* Convert linear signal-to-noise ratio into dB */
1466 static u8 ratio2dB[100] = {
1467 /* 0 1 2 3 4 5 6 7 8 9 */
1468 0, 0, 6, 10, 12, 14, 16, 17, 18, 19, /* 00 - 09 */
1469 20, 21, 22, 22, 23, 23, 24, 25, 26, 26, /* 10 - 19 */
1470 26, 26, 26, 27, 27, 28, 28, 28, 29, 29, /* 20 - 29 */
1471 29, 30, 30, 30, 31, 31, 31, 31, 32, 32, /* 30 - 39 */
1472 32, 32, 32, 33, 33, 33, 33, 33, 34, 34, /* 40 - 49 */
1473 34, 34, 34, 34, 35, 35, 35, 35, 35, 35, /* 50 - 59 */
1474 36, 36, 36, 36, 36, 36, 36, 37, 37, 37, /* 60 - 69 */
1475 37, 37, 37, 37, 37, 38, 38, 38, 38, 38, /* 70 - 79 */
1476 38, 38, 38, 38, 38, 39, 39, 39, 39, 39, /* 80 - 89 */
1477 39, 39, 39, 39, 39, 40, 40, 40, 40, 40 /* 90 - 99 */
1478 };
1479
1480 /* Calculates a relative dB value from a ratio of linear
1481 * (i.e. not dB) signal levels.
1482 * Conversion assumes that levels are voltages (20*log), not powers (10*log). */
1483 int iwl3945_calc_db_from_ratio(int sig_ratio)
1484 {
1485 /* 1000:1 or higher just report as 60 dB */
1486 if (sig_ratio >= 1000)
1487 return 60;
1488
1489 /* 100:1 or higher, divide by 10 and use table,
1490 * add 20 dB to make up for divide by 10 */
1491 if (sig_ratio >= 100)
1492 return 20 + (int)ratio2dB[sig_ratio/10];
1493
1494 /* We shouldn't see this */
1495 if (sig_ratio < 1)
1496 return 0;
1497
1498 /* Use table for ratios 1:1 - 99:1 */
1499 return (int)ratio2dB[sig_ratio];
1500 }
1501
1502 #define PERFECT_RSSI (-20) /* dBm */
1503 #define WORST_RSSI (-95) /* dBm */
1504 #define RSSI_RANGE (PERFECT_RSSI - WORST_RSSI)
1505
1506 /* Calculate an indication of rx signal quality (a percentage, not dBm!).
1507 * See http://www.ces.clemson.edu/linux/signal_quality.shtml for info
1508 * about formulas used below. */
1509 int iwl3945_calc_sig_qual(int rssi_dbm, int noise_dbm)
1510 {
1511 int sig_qual;
1512 int degradation = PERFECT_RSSI - rssi_dbm;
1513
1514 /* If we get a noise measurement, use signal-to-noise ratio (SNR)
1515 * as indicator; formula is (signal dbm - noise dbm).
1516 * SNR at or above 40 is a great signal (100%).
1517 * Below that, scale to fit SNR of 0 - 40 dB within 0 - 100% indicator.
1518 * Weakest usable signal is usually 10 - 15 dB SNR. */
1519 if (noise_dbm) {
1520 if (rssi_dbm - noise_dbm >= 40)
1521 return 100;
1522 else if (rssi_dbm < noise_dbm)
1523 return 0;
1524 sig_qual = ((rssi_dbm - noise_dbm) * 5) / 2;
1525
1526 /* Else use just the signal level.
1527 * This formula is a least squares fit of data points collected and
1528 * compared with a reference system that had a percentage (%) display
1529 * for signal quality. */
1530 } else
1531 sig_qual = (100 * (RSSI_RANGE * RSSI_RANGE) - degradation *
1532 (15 * RSSI_RANGE + 62 * degradation)) /
1533 (RSSI_RANGE * RSSI_RANGE);
1534
1535 if (sig_qual > 100)
1536 sig_qual = 100;
1537 else if (sig_qual < 1)
1538 sig_qual = 0;
1539
1540 return sig_qual;
1541 }
1542
1543 /**
1544 * iwl3945_rx_handle - Main entry function for receiving responses from uCode
1545 *
1546 * Uses the priv->rx_handlers callback function array to invoke
1547 * the appropriate handlers, including command responses,
1548 * frame-received notifications, and other notifications.
1549 */
1550 static void iwl3945_rx_handle(struct iwl_priv *priv)
1551 {
1552 struct iwl_rx_mem_buffer *rxb;
1553 struct iwl_rx_packet *pkt;
1554 struct iwl_rx_queue *rxq = &priv->rxq;
1555 u32 r, i;
1556 int reclaim;
1557 unsigned long flags;
1558 u8 fill_rx = 0;
1559 u32 count = 8;
1560
1561 /* uCode's read index (stored in shared DRAM) indicates the last Rx
1562 * buffer that the driver may process (last buffer filled by ucode). */
1563 r = le16_to_cpu(rxq->rb_stts->closed_rb_num) & 0x0FFF;
1564 i = rxq->read;
1565
1566 if (iwl_rx_queue_space(rxq) > (RX_QUEUE_SIZE / 2))
1567 fill_rx = 1;
1568 /* Rx interrupt, but nothing sent from uCode */
1569 if (i == r)
1570 IWL_DEBUG(priv, IWL_DL_RX | IWL_DL_ISR, "r = %d, i = %d\n", r, i);
1571
1572 while (i != r) {
1573 rxb = rxq->queue[i];
1574
1575 /* If an RXB doesn't have a Rx queue slot associated with it,
1576 * then a bug has been introduced in the queue refilling
1577 * routines -- catch it here */
1578 BUG_ON(rxb == NULL);
1579
1580 rxq->queue[i] = NULL;
1581
1582 pci_unmap_single(priv->pci_dev, rxb->real_dma_addr,
1583 priv->hw_params.rx_buf_size,
1584 PCI_DMA_FROMDEVICE);
1585 pkt = (struct iwl_rx_packet *)rxb->skb->data;
1586
1587 /* Reclaim a command buffer only if this packet is a response
1588 * to a (driver-originated) command.
1589 * If the packet (e.g. Rx frame) originated from uCode,
1590 * there is no command buffer to reclaim.
1591 * Ucode should set SEQ_RX_FRAME bit if ucode-originated,
1592 * but apparently a few don't get set; catch them here. */
1593 reclaim = !(pkt->hdr.sequence & SEQ_RX_FRAME) &&
1594 (pkt->hdr.cmd != STATISTICS_NOTIFICATION) &&
1595 (pkt->hdr.cmd != REPLY_TX);
1596
1597 /* Based on type of command response or notification,
1598 * handle those that need handling via function in
1599 * rx_handlers table. See iwl3945_setup_rx_handlers() */
1600 if (priv->rx_handlers[pkt->hdr.cmd]) {
1601 IWL_DEBUG(priv, IWL_DL_HCMD | IWL_DL_RX | IWL_DL_ISR,
1602 "r = %d, i = %d, %s, 0x%02x\n", r, i,
1603 get_cmd_string(pkt->hdr.cmd), pkt->hdr.cmd);
1604 priv->rx_handlers[pkt->hdr.cmd] (priv, rxb);
1605 priv->isr_stats.rx_handlers[pkt->hdr.cmd]++;
1606 } else {
1607 /* No handling needed */
1608 IWL_DEBUG(priv, IWL_DL_HCMD | IWL_DL_RX | IWL_DL_ISR,
1609 "r %d i %d No handler needed for %s, 0x%02x\n",
1610 r, i, get_cmd_string(pkt->hdr.cmd),
1611 pkt->hdr.cmd);
1612 }
1613
1614 if (reclaim) {
1615 /* Invoke any callbacks, transfer the skb to caller, and
1616 * fire off the (possibly) blocking iwl_send_cmd()
1617 * as we reclaim the driver command queue */
1618 if (rxb && rxb->skb)
1619 iwl_tx_cmd_complete(priv, rxb);
1620 else
1621 IWL_WARN(priv, "Claim null rxb?\n");
1622 }
1623
1624 /* For now we just don't re-use anything. We can tweak this
1625 * later to try and re-use notification packets and SKBs that
1626 * fail to Rx correctly */
1627 if (rxb->skb != NULL) {
1628 priv->alloc_rxb_skb--;
1629 dev_kfree_skb_any(rxb->skb);
1630 rxb->skb = NULL;
1631 }
1632
1633 spin_lock_irqsave(&rxq->lock, flags);
1634 list_add_tail(&rxb->list, &priv->rxq.rx_used);
1635 spin_unlock_irqrestore(&rxq->lock, flags);
1636 i = (i + 1) & RX_QUEUE_MASK;
1637 /* If there are a lot of unused frames,
1638 * restock the Rx queue so ucode won't assert. */
1639 if (fill_rx) {
1640 count++;
1641 if (count >= 8) {
1642 priv->rxq.read = i;
1643 iwl3945_rx_queue_restock(priv);
1644 count = 0;
1645 }
1646 }
1647 }
1648
1649 /* Backtrack one entry */
1650 priv->rxq.read = i;
1651 iwl3945_rx_queue_restock(priv);
1652 }
1653
1654 /* call this function to flush any scheduled tasklet */
1655 static inline void iwl_synchronize_irq(struct iwl_priv *priv)
1656 {
1657 /* wait to make sure we flush pending tasklet*/
1658 synchronize_irq(priv->pci_dev->irq);
1659 tasklet_kill(&priv->irq_tasklet);
1660 }
1661
1662 static const char *desc_lookup(int i)
1663 {
1664 switch (i) {
1665 case 1:
1666 return "FAIL";
1667 case 2:
1668 return "BAD_PARAM";
1669 case 3:
1670 return "BAD_CHECKSUM";
1671 case 4:
1672 return "NMI_INTERRUPT";
1673 case 5:
1674 return "SYSASSERT";
1675 case 6:
1676 return "FATAL_ERROR";
1677 }
1678
1679 return "UNKNOWN";
1680 }
1681
1682 #define ERROR_START_OFFSET (1 * sizeof(u32))
1683 #define ERROR_ELEM_SIZE (7 * sizeof(u32))
1684
1685 static void iwl3945_dump_nic_error_log(struct iwl_priv *priv)
1686 {
1687 u32 i;
1688 u32 desc, time, count, base, data1;
1689 u32 blink1, blink2, ilink1, ilink2;
1690 int rc;
1691
1692 base = le32_to_cpu(priv->card_alive.error_event_table_ptr);
1693
1694 if (!iwl3945_hw_valid_rtc_data_addr(base)) {
1695 IWL_ERR(priv, "Not valid error log pointer 0x%08X\n", base);
1696 return;
1697 }
1698
1699 rc = iwl_grab_nic_access(priv);
1700 if (rc) {
1701 IWL_WARN(priv, "Can not read from adapter at this time.\n");
1702 return;
1703 }
1704
1705 count = iwl_read_targ_mem(priv, base);
1706
1707 if (ERROR_START_OFFSET <= count * ERROR_ELEM_SIZE) {
1708 IWL_ERR(priv, "Start IWL Error Log Dump:\n");
1709 IWL_ERR(priv, "Status: 0x%08lX, count: %d\n",
1710 priv->status, count);
1711 }
1712
1713 IWL_ERR(priv, "Desc Time asrtPC blink2 "
1714 "ilink1 nmiPC Line\n");
1715 for (i = ERROR_START_OFFSET;
1716 i < (count * ERROR_ELEM_SIZE) + ERROR_START_OFFSET;
1717 i += ERROR_ELEM_SIZE) {
1718 desc = iwl_read_targ_mem(priv, base + i);
1719 time =
1720 iwl_read_targ_mem(priv, base + i + 1 * sizeof(u32));
1721 blink1 =
1722 iwl_read_targ_mem(priv, base + i + 2 * sizeof(u32));
1723 blink2 =
1724 iwl_read_targ_mem(priv, base + i + 3 * sizeof(u32));
1725 ilink1 =
1726 iwl_read_targ_mem(priv, base + i + 4 * sizeof(u32));
1727 ilink2 =
1728 iwl_read_targ_mem(priv, base + i + 5 * sizeof(u32));
1729 data1 =
1730 iwl_read_targ_mem(priv, base + i + 6 * sizeof(u32));
1731
1732 IWL_ERR(priv,
1733 "%-13s (#%d) %010u 0x%05X 0x%05X 0x%05X 0x%05X %u\n\n",
1734 desc_lookup(desc), desc, time, blink1, blink2,
1735 ilink1, ilink2, data1);
1736 }
1737
1738 iwl_release_nic_access(priv);
1739
1740 }
1741
1742 #define EVENT_START_OFFSET (6 * sizeof(u32))
1743
1744 /**
1745 * iwl3945_print_event_log - Dump error event log to syslog
1746 *
1747 * NOTE: Must be called with iwl_grab_nic_access() already obtained!
1748 */
1749 static void iwl3945_print_event_log(struct iwl_priv *priv, u32 start_idx,
1750 u32 num_events, u32 mode)
1751 {
1752 u32 i;
1753 u32 base; /* SRAM byte address of event log header */
1754 u32 event_size; /* 2 u32s, or 3 u32s if timestamp recorded */
1755 u32 ptr; /* SRAM byte address of log data */
1756 u32 ev, time, data; /* event log data */
1757
1758 if (num_events == 0)
1759 return;
1760
1761 base = le32_to_cpu(priv->card_alive.log_event_table_ptr);
1762
1763 if (mode == 0)
1764 event_size = 2 * sizeof(u32);
1765 else
1766 event_size = 3 * sizeof(u32);
1767
1768 ptr = base + EVENT_START_OFFSET + (start_idx * event_size);
1769
1770 /* "time" is actually "data" for mode 0 (no timestamp).
1771 * place event id # at far right for easier visual parsing. */
1772 for (i = 0; i < num_events; i++) {
1773 ev = iwl_read_targ_mem(priv, ptr);
1774 ptr += sizeof(u32);
1775 time = iwl_read_targ_mem(priv, ptr);
1776 ptr += sizeof(u32);
1777 if (mode == 0) {
1778 /* data, ev */
1779 IWL_ERR(priv, "0x%08x\t%04u\n", time, ev);
1780 } else {
1781 data = iwl_read_targ_mem(priv, ptr);
1782 ptr += sizeof(u32);
1783 IWL_ERR(priv, "%010u\t0x%08x\t%04u\n", time, data, ev);
1784 }
1785 }
1786 }
1787
1788 static void iwl3945_dump_nic_event_log(struct iwl_priv *priv)
1789 {
1790 int rc;
1791 u32 base; /* SRAM byte address of event log header */
1792 u32 capacity; /* event log capacity in # entries */
1793 u32 mode; /* 0 - no timestamp, 1 - timestamp recorded */
1794 u32 num_wraps; /* # times uCode wrapped to top of log */
1795 u32 next_entry; /* index of next entry to be written by uCode */
1796 u32 size; /* # entries that we'll print */
1797
1798 base = le32_to_cpu(priv->card_alive.log_event_table_ptr);
1799 if (!iwl3945_hw_valid_rtc_data_addr(base)) {
1800 IWL_ERR(priv, "Invalid event log pointer 0x%08X\n", base);
1801 return;
1802 }
1803
1804 rc = iwl_grab_nic_access(priv);
1805 if (rc) {
1806 IWL_WARN(priv, "Can not read from adapter at this time.\n");
1807 return;
1808 }
1809
1810 /* event log header */
1811 capacity = iwl_read_targ_mem(priv, base);
1812 mode = iwl_read_targ_mem(priv, base + (1 * sizeof(u32)));
1813 num_wraps = iwl_read_targ_mem(priv, base + (2 * sizeof(u32)));
1814 next_entry = iwl_read_targ_mem(priv, base + (3 * sizeof(u32)));
1815
1816 size = num_wraps ? capacity : next_entry;
1817
1818 /* bail out if nothing in log */
1819 if (size == 0) {
1820 IWL_ERR(priv, "Start IWL Event Log Dump: nothing in log\n");
1821 iwl_release_nic_access(priv);
1822 return;
1823 }
1824
1825 IWL_ERR(priv, "Start IWL Event Log Dump: display count %d, wraps %d\n",
1826 size, num_wraps);
1827
1828 /* if uCode has wrapped back to top of log, start at the oldest entry,
1829 * i.e the next one that uCode would fill. */
1830 if (num_wraps)
1831 iwl3945_print_event_log(priv, next_entry,
1832 capacity - next_entry, mode);
1833
1834 /* (then/else) start at top of log */
1835 iwl3945_print_event_log(priv, 0, next_entry, mode);
1836
1837 iwl_release_nic_access(priv);
1838 }
1839
1840 static void iwl3945_irq_tasklet(struct iwl_priv *priv)
1841 {
1842 u32 inta, handled = 0;
1843 u32 inta_fh;
1844 unsigned long flags;
1845 #ifdef CONFIG_IWLWIFI_DEBUG
1846 u32 inta_mask;
1847 #endif
1848
1849 spin_lock_irqsave(&priv->lock, flags);
1850
1851 /* Ack/clear/reset pending uCode interrupts.
1852 * Note: Some bits in CSR_INT are "OR" of bits in CSR_FH_INT_STATUS,
1853 * and will clear only when CSR_FH_INT_STATUS gets cleared. */
1854 inta = iwl_read32(priv, CSR_INT);
1855 iwl_write32(priv, CSR_INT, inta);
1856
1857 /* Ack/clear/reset pending flow-handler (DMA) interrupts.
1858 * Any new interrupts that happen after this, either while we're
1859 * in this tasklet, or later, will show up in next ISR/tasklet. */
1860 inta_fh = iwl_read32(priv, CSR_FH_INT_STATUS);
1861 iwl_write32(priv, CSR_FH_INT_STATUS, inta_fh);
1862
1863 #ifdef CONFIG_IWLWIFI_DEBUG
1864 if (priv->debug_level & IWL_DL_ISR) {
1865 /* just for debug */
1866 inta_mask = iwl_read32(priv, CSR_INT_MASK);
1867 IWL_DEBUG_ISR(priv, "inta 0x%08x, enabled 0x%08x, fh 0x%08x\n",
1868 inta, inta_mask, inta_fh);
1869 }
1870 #endif
1871
1872 /* Since CSR_INT and CSR_FH_INT_STATUS reads and clears are not
1873 * atomic, make sure that inta covers all the interrupts that
1874 * we've discovered, even if FH interrupt came in just after
1875 * reading CSR_INT. */
1876 if (inta_fh & CSR39_FH_INT_RX_MASK)
1877 inta |= CSR_INT_BIT_FH_RX;
1878 if (inta_fh & CSR39_FH_INT_TX_MASK)
1879 inta |= CSR_INT_BIT_FH_TX;
1880
1881 /* Now service all interrupt bits discovered above. */
1882 if (inta & CSR_INT_BIT_HW_ERR) {
1883 IWL_ERR(priv, "Microcode HW error detected. Restarting.\n");
1884
1885 /* Tell the device to stop sending interrupts */
1886 iwl_disable_interrupts(priv);
1887
1888 priv->isr_stats.hw++;
1889 iwl_irq_handle_error(priv);
1890
1891 handled |= CSR_INT_BIT_HW_ERR;
1892
1893 spin_unlock_irqrestore(&priv->lock, flags);
1894
1895 return;
1896 }
1897
1898 #ifdef CONFIG_IWLWIFI_DEBUG
1899 if (priv->debug_level & (IWL_DL_ISR)) {
1900 /* NIC fires this, but we don't use it, redundant with WAKEUP */
1901 if (inta & CSR_INT_BIT_SCD) {
1902 IWL_DEBUG_ISR(priv, "Scheduler finished to transmit "
1903 "the frame/frames.\n");
1904 priv->isr_stats.sch++;
1905 }
1906
1907 /* Alive notification via Rx interrupt will do the real work */
1908 if (inta & CSR_INT_BIT_ALIVE) {
1909 IWL_DEBUG_ISR(priv, "Alive interrupt\n");
1910 priv->isr_stats.alive++;
1911 }
1912 }
1913 #endif
1914 /* Safely ignore these bits for debug checks below */
1915 inta &= ~(CSR_INT_BIT_SCD | CSR_INT_BIT_ALIVE);
1916
1917 /* Error detected by uCode */
1918 if (inta & CSR_INT_BIT_SW_ERR) {
1919 IWL_ERR(priv, "Microcode SW error detected. "
1920 "Restarting 0x%X.\n", inta);
1921 priv->isr_stats.sw++;
1922 priv->isr_stats.sw_err = inta;
1923 iwl_irq_handle_error(priv);
1924 handled |= CSR_INT_BIT_SW_ERR;
1925 }
1926
1927 /* uCode wakes up after power-down sleep */
1928 if (inta & CSR_INT_BIT_WAKEUP) {
1929 IWL_DEBUG_ISR(priv, "Wakeup interrupt\n");
1930 iwl_rx_queue_update_write_ptr(priv, &priv->rxq);
1931 iwl_txq_update_write_ptr(priv, &priv->txq[0]);
1932 iwl_txq_update_write_ptr(priv, &priv->txq[1]);
1933 iwl_txq_update_write_ptr(priv, &priv->txq[2]);
1934 iwl_txq_update_write_ptr(priv, &priv->txq[3]);
1935 iwl_txq_update_write_ptr(priv, &priv->txq[4]);
1936 iwl_txq_update_write_ptr(priv, &priv->txq[5]);
1937
1938 priv->isr_stats.wakeup++;
1939 handled |= CSR_INT_BIT_WAKEUP;
1940 }
1941
1942 /* All uCode command responses, including Tx command responses,
1943 * Rx "responses" (frame-received notification), and other
1944 * notifications from uCode come through here*/
1945 if (inta & (CSR_INT_BIT_FH_RX | CSR_INT_BIT_SW_RX)) {
1946 iwl3945_rx_handle(priv);
1947 priv->isr_stats.rx++;
1948 handled |= (CSR_INT_BIT_FH_RX | CSR_INT_BIT_SW_RX);
1949 }
1950
1951 if (inta & CSR_INT_BIT_FH_TX) {
1952 IWL_DEBUG_ISR(priv, "Tx interrupt\n");
1953 priv->isr_stats.tx++;
1954
1955 iwl_write32(priv, CSR_FH_INT_STATUS, (1 << 6));
1956 if (!iwl_grab_nic_access(priv)) {
1957 iwl_write_direct32(priv, FH39_TCSR_CREDIT
1958 (FH39_SRVC_CHNL), 0x0);
1959 iwl_release_nic_access(priv);
1960 }
1961 handled |= CSR_INT_BIT_FH_TX;
1962 }
1963
1964 if (inta & ~handled) {
1965 IWL_ERR(priv, "Unhandled INTA bits 0x%08x\n", inta & ~handled);
1966 priv->isr_stats.unhandled++;
1967 }
1968
1969 if (inta & ~CSR_INI_SET_MASK) {
1970 IWL_WARN(priv, "Disabled INTA bits 0x%08x were pending\n",
1971 inta & ~CSR_INI_SET_MASK);
1972 IWL_WARN(priv, " with FH_INT = 0x%08x\n", inta_fh);
1973 }
1974
1975 /* Re-enable all interrupts */
1976 /* only Re-enable if disabled by irq */
1977 if (test_bit(STATUS_INT_ENABLED, &priv->status))
1978 iwl_enable_interrupts(priv);
1979
1980 #ifdef CONFIG_IWLWIFI_DEBUG
1981 if (priv->debug_level & (IWL_DL_ISR)) {
1982 inta = iwl_read32(priv, CSR_INT);
1983 inta_mask = iwl_read32(priv, CSR_INT_MASK);
1984 inta_fh = iwl_read32(priv, CSR_FH_INT_STATUS);
1985 IWL_DEBUG_ISR(priv, "End inta 0x%08x, enabled 0x%08x, fh 0x%08x, "
1986 "flags 0x%08lx\n", inta, inta_mask, inta_fh, flags);
1987 }
1988 #endif
1989 spin_unlock_irqrestore(&priv->lock, flags);
1990 }
1991
1992 static int iwl3945_get_channels_for_scan(struct iwl_priv *priv,
1993 enum ieee80211_band band,
1994 u8 is_active, u8 n_probes,
1995 struct iwl3945_scan_channel *scan_ch)
1996 {
1997 const struct ieee80211_channel *channels = NULL;
1998 const struct ieee80211_supported_band *sband;
1999 const struct iwl_channel_info *ch_info;
2000 u16 passive_dwell = 0;
2001 u16 active_dwell = 0;
2002 int added, i;
2003
2004 sband = iwl_get_hw_mode(priv, band);
2005 if (!sband)
2006 return 0;
2007
2008 channels = sband->channels;
2009
2010 active_dwell = iwl_get_active_dwell_time(priv, band, n_probes);
2011 passive_dwell = iwl_get_passive_dwell_time(priv, band);
2012
2013 if (passive_dwell <= active_dwell)
2014 passive_dwell = active_dwell + 1;
2015
2016 for (i = 0, added = 0; i < sband->n_channels; i++) {
2017 if (channels[i].flags & IEEE80211_CHAN_DISABLED)
2018 continue;
2019
2020 scan_ch->channel = channels[i].hw_value;
2021
2022 ch_info = iwl_get_channel_info(priv, band, scan_ch->channel);
2023 if (!is_channel_valid(ch_info)) {
2024 IWL_DEBUG_SCAN(priv, "Channel %d is INVALID for this band.\n",
2025 scan_ch->channel);
2026 continue;
2027 }
2028
2029 scan_ch->active_dwell = cpu_to_le16(active_dwell);
2030 scan_ch->passive_dwell = cpu_to_le16(passive_dwell);
2031 /* If passive , set up for auto-switch
2032 * and use long active_dwell time.
2033 */
2034 if (!is_active || is_channel_passive(ch_info) ||
2035 (channels[i].flags & IEEE80211_CHAN_PASSIVE_SCAN)) {
2036 scan_ch->type = 0; /* passive */
2037 if (IWL_UCODE_API(priv->ucode_ver) == 1)
2038 scan_ch->active_dwell = cpu_to_le16(passive_dwell - 1);
2039 } else {
2040 scan_ch->type = 1; /* active */
2041 }
2042
2043 /* Set direct probe bits. These may be used both for active
2044 * scan channels (probes gets sent right away),
2045 * or for passive channels (probes get se sent only after
2046 * hearing clear Rx packet).*/
2047 if (IWL_UCODE_API(priv->ucode_ver) >= 2) {
2048 if (n_probes)
2049 scan_ch->type |= IWL39_SCAN_PROBE_MASK(n_probes);
2050 } else {
2051 /* uCode v1 does not allow setting direct probe bits on
2052 * passive channel. */
2053 if ((scan_ch->type & 1) && n_probes)
2054 scan_ch->type |= IWL39_SCAN_PROBE_MASK(n_probes);
2055 }
2056
2057 /* Set txpower levels to defaults */
2058 scan_ch->tpc.dsp_atten = 110;
2059 /* scan_pwr_info->tpc.dsp_atten; */
2060
2061 /*scan_pwr_info->tpc.tx_gain; */
2062 if (band == IEEE80211_BAND_5GHZ)
2063 scan_ch->tpc.tx_gain = ((1 << 5) | (3 << 3)) | 3;
2064 else {
2065 scan_ch->tpc.tx_gain = ((1 << 5) | (5 << 3));
2066 /* NOTE: if we were doing 6Mb OFDM for scans we'd use
2067 * power level:
2068 * scan_ch->tpc.tx_gain = ((1 << 5) | (2 << 3)) | 3;
2069 */
2070 }
2071
2072 IWL_DEBUG_SCAN(priv, "Scanning %d [%s %d]\n",
2073 scan_ch->channel,
2074 (scan_ch->type & 1) ? "ACTIVE" : "PASSIVE",
2075 (scan_ch->type & 1) ?
2076 active_dwell : passive_dwell);
2077
2078 scan_ch++;
2079 added++;
2080 }
2081
2082 IWL_DEBUG_SCAN(priv, "total channels to scan %d \n", added);
2083 return added;
2084 }
2085
2086 static void iwl3945_init_hw_rates(struct iwl_priv *priv,
2087 struct ieee80211_rate *rates)
2088 {
2089 int i;
2090
2091 for (i = 0; i < IWL_RATE_COUNT; i++) {
2092 rates[i].bitrate = iwl3945_rates[i].ieee * 5;
2093 rates[i].hw_value = i; /* Rate scaling will work on indexes */
2094 rates[i].hw_value_short = i;
2095 rates[i].flags = 0;
2096 if ((i > IWL39_LAST_OFDM_RATE) || (i < IWL_FIRST_OFDM_RATE)) {
2097 /*
2098 * If CCK != 1M then set short preamble rate flag.
2099 */
2100 rates[i].flags |= (iwl3945_rates[i].plcp == 10) ?
2101 0 : IEEE80211_RATE_SHORT_PREAMBLE;
2102 }
2103 }
2104 }
2105
2106 /******************************************************************************
2107 *
2108 * uCode download functions
2109 *
2110 ******************************************************************************/
2111
2112 static void iwl3945_dealloc_ucode_pci(struct iwl_priv *priv)
2113 {
2114 iwl_free_fw_desc(priv->pci_dev, &priv->ucode_code);
2115 iwl_free_fw_desc(priv->pci_dev, &priv->ucode_data);
2116 iwl_free_fw_desc(priv->pci_dev, &priv->ucode_data_backup);
2117 iwl_free_fw_desc(priv->pci_dev, &priv->ucode_init);
2118 iwl_free_fw_desc(priv->pci_dev, &priv->ucode_init_data);
2119 iwl_free_fw_desc(priv->pci_dev, &priv->ucode_boot);
2120 }
2121
2122 /**
2123 * iwl3945_verify_inst_full - verify runtime uCode image in card vs. host,
2124 * looking at all data.
2125 */
2126 static int iwl3945_verify_inst_full(struct iwl_priv *priv, __le32 *image, u32 len)
2127 {
2128 u32 val;
2129 u32 save_len = len;
2130 int rc = 0;
2131 u32 errcnt;
2132
2133 IWL_DEBUG_INFO(priv, "ucode inst image size is %u\n", len);
2134
2135 rc = iwl_grab_nic_access(priv);
2136 if (rc)
2137 return rc;
2138
2139 iwl_write_direct32(priv, HBUS_TARG_MEM_RADDR,
2140 IWL39_RTC_INST_LOWER_BOUND);
2141
2142 errcnt = 0;
2143 for (; len > 0; len -= sizeof(u32), image++) {
2144 /* read data comes through single port, auto-incr addr */
2145 /* NOTE: Use the debugless read so we don't flood kernel log
2146 * if IWL_DL_IO is set */
2147 val = _iwl_read_direct32(priv, HBUS_TARG_MEM_RDAT);
2148 if (val != le32_to_cpu(*image)) {
2149 IWL_ERR(priv, "uCode INST section is invalid at "
2150 "offset 0x%x, is 0x%x, s/b 0x%x\n",
2151 save_len - len, val, le32_to_cpu(*image));
2152 rc = -EIO;
2153 errcnt++;
2154 if (errcnt >= 20)
2155 break;
2156 }
2157 }
2158
2159 iwl_release_nic_access(priv);
2160
2161 if (!errcnt)
2162 IWL_DEBUG_INFO(priv,
2163 "ucode image in INSTRUCTION memory is good\n");
2164
2165 return rc;
2166 }
2167
2168
2169 /**
2170 * iwl3945_verify_inst_sparse - verify runtime uCode image in card vs. host,
2171 * using sample data 100 bytes apart. If these sample points are good,
2172 * it's a pretty good bet that everything between them is good, too.
2173 */
2174 static int iwl3945_verify_inst_sparse(struct iwl_priv *priv, __le32 *image, u32 len)
2175 {
2176 u32 val;
2177 int rc = 0;
2178 u32 errcnt = 0;
2179 u32 i;
2180
2181 IWL_DEBUG_INFO(priv, "ucode inst image size is %u\n", len);
2182
2183 rc = iwl_grab_nic_access(priv);
2184 if (rc)
2185 return rc;
2186
2187 for (i = 0; i < len; i += 100, image += 100/sizeof(u32)) {
2188 /* read data comes through single port, auto-incr addr */
2189 /* NOTE: Use the debugless read so we don't flood kernel log
2190 * if IWL_DL_IO is set */
2191 iwl_write_direct32(priv, HBUS_TARG_MEM_RADDR,
2192 i + IWL39_RTC_INST_LOWER_BOUND);
2193 val = _iwl_read_direct32(priv, HBUS_TARG_MEM_RDAT);
2194 if (val != le32_to_cpu(*image)) {
2195 #if 0 /* Enable this if you want to see details */
2196 IWL_ERR(priv, "uCode INST section is invalid at "
2197 "offset 0x%x, is 0x%x, s/b 0x%x\n",
2198 i, val, *image);
2199 #endif
2200 rc = -EIO;
2201 errcnt++;
2202 if (errcnt >= 3)
2203 break;
2204 }
2205 }
2206
2207 iwl_release_nic_access(priv);
2208
2209 return rc;
2210 }
2211
2212
2213 /**
2214 * iwl3945_verify_ucode - determine which instruction image is in SRAM,
2215 * and verify its contents
2216 */
2217 static int iwl3945_verify_ucode(struct iwl_priv *priv)
2218 {
2219 __le32 *image;
2220 u32 len;
2221 int rc = 0;
2222
2223 /* Try bootstrap */
2224 image = (__le32 *)priv->ucode_boot.v_addr;
2225 len = priv->ucode_boot.len;
2226 rc = iwl3945_verify_inst_sparse(priv, image, len);
2227 if (rc == 0) {
2228 IWL_DEBUG_INFO(priv, "Bootstrap uCode is good in inst SRAM\n");
2229 return 0;
2230 }
2231
2232 /* Try initialize */
2233 image = (__le32 *)priv->ucode_init.v_addr;
2234 len = priv->ucode_init.len;
2235 rc = iwl3945_verify_inst_sparse(priv, image, len);
2236 if (rc == 0) {
2237 IWL_DEBUG_INFO(priv, "Initialize uCode is good in inst SRAM\n");
2238 return 0;
2239 }
2240
2241 /* Try runtime/protocol */
2242 image = (__le32 *)priv->ucode_code.v_addr;
2243 len = priv->ucode_code.len;
2244 rc = iwl3945_verify_inst_sparse(priv, image, len);
2245 if (rc == 0) {
2246 IWL_DEBUG_INFO(priv, "Runtime uCode is good in inst SRAM\n");
2247 return 0;
2248 }
2249
2250 IWL_ERR(priv, "NO VALID UCODE IMAGE IN INSTRUCTION SRAM!!\n");
2251
2252 /* Since nothing seems to match, show first several data entries in
2253 * instruction SRAM, so maybe visual inspection will give a clue.
2254 * Selection of bootstrap image (vs. other images) is arbitrary. */
2255 image = (__le32 *)priv->ucode_boot.v_addr;
2256 len = priv->ucode_boot.len;
2257 rc = iwl3945_verify_inst_full(priv, image, len);
2258
2259 return rc;
2260 }
2261
2262 static void iwl3945_nic_start(struct iwl_priv *priv)
2263 {
2264 /* Remove all resets to allow NIC to operate */
2265 iwl_write32(priv, CSR_RESET, 0);
2266 }
2267
2268 /**
2269 * iwl3945_read_ucode - Read uCode images from disk file.
2270 *
2271 * Copy into buffers for card to fetch via bus-mastering
2272 */
2273 static int iwl3945_read_ucode(struct iwl_priv *priv)
2274 {
2275 struct iwl_ucode *ucode;
2276 int ret = -EINVAL, index;
2277 const struct firmware *ucode_raw;
2278 /* firmware file name contains uCode/driver compatibility version */
2279 const char *name_pre = priv->cfg->fw_name_pre;
2280 const unsigned int api_max = priv->cfg->ucode_api_max;
2281 const unsigned int api_min = priv->cfg->ucode_api_min;
2282 char buf[25];
2283 u8 *src;
2284 size_t len;
2285 u32 api_ver, inst_size, data_size, init_size, init_data_size, boot_size;
2286
2287 /* Ask kernel firmware_class module to get the boot firmware off disk.
2288 * request_firmware() is synchronous, file is in memory on return. */
2289 for (index = api_max; index >= api_min; index--) {
2290 sprintf(buf, "%s%u%s", name_pre, index, ".ucode");
2291 ret = request_firmware(&ucode_raw, buf, &priv->pci_dev->dev);
2292 if (ret < 0) {
2293 IWL_ERR(priv, "%s firmware file req failed: %d\n",
2294 buf, ret);
2295 if (ret == -ENOENT)
2296 continue;
2297 else
2298 goto error;
2299 } else {
2300 if (index < api_max)
2301 IWL_ERR(priv, "Loaded firmware %s, "
2302 "which is deprecated. "
2303 " Please use API v%u instead.\n",
2304 buf, api_max);
2305 IWL_DEBUG_INFO(priv, "Got firmware '%s' file "
2306 "(%zd bytes) from disk\n",
2307 buf, ucode_raw->size);
2308 break;
2309 }
2310 }
2311
2312 if (ret < 0)
2313 goto error;
2314
2315 /* Make sure that we got at least our header! */
2316 if (ucode_raw->size < sizeof(*ucode)) {
2317 IWL_ERR(priv, "File size way too small!\n");
2318 ret = -EINVAL;
2319 goto err_release;
2320 }
2321
2322 /* Data from ucode file: header followed by uCode images */
2323 ucode = (void *)ucode_raw->data;
2324
2325 priv->ucode_ver = le32_to_cpu(ucode->ver);
2326 api_ver = IWL_UCODE_API(priv->ucode_ver);
2327 inst_size = le32_to_cpu(ucode->inst_size);
2328 data_size = le32_to_cpu(ucode->data_size);
2329 init_size = le32_to_cpu(ucode->init_size);
2330 init_data_size = le32_to_cpu(ucode->init_data_size);
2331 boot_size = le32_to_cpu(ucode->boot_size);
2332
2333 /* api_ver should match the api version forming part of the
2334 * firmware filename ... but we don't check for that and only rely
2335 * on the API version read from firmware header from here on forward */
2336
2337 if (api_ver < api_min || api_ver > api_max) {
2338 IWL_ERR(priv, "Driver unable to support your firmware API. "
2339 "Driver supports v%u, firmware is v%u.\n",
2340 api_max, api_ver);
2341 priv->ucode_ver = 0;
2342 ret = -EINVAL;
2343 goto err_release;
2344 }
2345 if (api_ver != api_max)
2346 IWL_ERR(priv, "Firmware has old API version. Expected %u, "
2347 "got %u. New firmware can be obtained "
2348 "from http://www.intellinuxwireless.org.\n",
2349 api_max, api_ver);
2350
2351 IWL_INFO(priv, "loaded firmware version %u.%u.%u.%u\n",
2352 IWL_UCODE_MAJOR(priv->ucode_ver),
2353 IWL_UCODE_MINOR(priv->ucode_ver),
2354 IWL_UCODE_API(priv->ucode_ver),
2355 IWL_UCODE_SERIAL(priv->ucode_ver));
2356
2357 IWL_DEBUG_INFO(priv, "f/w package hdr ucode version raw = 0x%x\n",
2358 priv->ucode_ver);
2359 IWL_DEBUG_INFO(priv, "f/w package hdr runtime inst size = %u\n",
2360 inst_size);
2361 IWL_DEBUG_INFO(priv, "f/w package hdr runtime data size = %u\n",
2362 data_size);
2363 IWL_DEBUG_INFO(priv, "f/w package hdr init inst size = %u\n",
2364 init_size);
2365 IWL_DEBUG_INFO(priv, "f/w package hdr init data size = %u\n",
2366 init_data_size);
2367 IWL_DEBUG_INFO(priv, "f/w package hdr boot inst size = %u\n",
2368 boot_size);
2369
2370
2371 /* Verify size of file vs. image size info in file's header */
2372 if (ucode_raw->size < sizeof(*ucode) +
2373 inst_size + data_size + init_size +
2374 init_data_size + boot_size) {
2375
2376 IWL_DEBUG_INFO(priv, "uCode file size %zd too small\n",
2377 ucode_raw->size);
2378 ret = -EINVAL;
2379 goto err_release;
2380 }
2381
2382 /* Verify that uCode images will fit in card's SRAM */
2383 if (inst_size > IWL39_MAX_INST_SIZE) {
2384 IWL_DEBUG_INFO(priv, "uCode instr len %d too large to fit in\n",
2385 inst_size);
2386 ret = -EINVAL;
2387 goto err_release;
2388 }
2389
2390 if (data_size > IWL39_MAX_DATA_SIZE) {
2391 IWL_DEBUG_INFO(priv, "uCode data len %d too large to fit in\n",
2392 data_size);
2393 ret = -EINVAL;
2394 goto err_release;
2395 }
2396 if (init_size > IWL39_MAX_INST_SIZE) {
2397 IWL_DEBUG_INFO(priv,
2398 "uCode init instr len %d too large to fit in\n",
2399 init_size);
2400 ret = -EINVAL;
2401 goto err_release;
2402 }
2403 if (init_data_size > IWL39_MAX_DATA_SIZE) {
2404 IWL_DEBUG_INFO(priv,
2405 "uCode init data len %d too large to fit in\n",
2406 init_data_size);
2407 ret = -EINVAL;
2408 goto err_release;
2409 }
2410 if (boot_size > IWL39_MAX_BSM_SIZE) {
2411 IWL_DEBUG_INFO(priv,
2412 "uCode boot instr len %d too large to fit in\n",
2413 boot_size);
2414 ret = -EINVAL;
2415 goto err_release;
2416 }
2417
2418 /* Allocate ucode buffers for card's bus-master loading ... */
2419
2420 /* Runtime instructions and 2 copies of data:
2421 * 1) unmodified from disk
2422 * 2) backup cache for save/restore during power-downs */
2423 priv->ucode_code.len = inst_size;
2424 iwl_alloc_fw_desc(priv->pci_dev, &priv->ucode_code);
2425
2426 priv->ucode_data.len = data_size;
2427 iwl_alloc_fw_desc(priv->pci_dev, &priv->ucode_data);
2428
2429 priv->ucode_data_backup.len = data_size;
2430 iwl_alloc_fw_desc(priv->pci_dev, &priv->ucode_data_backup);
2431
2432 if (!priv->ucode_code.v_addr || !priv->ucode_data.v_addr ||
2433 !priv->ucode_data_backup.v_addr)
2434 goto err_pci_alloc;
2435
2436 /* Initialization instructions and data */
2437 if (init_size && init_data_size) {
2438 priv->ucode_init.len = init_size;
2439 iwl_alloc_fw_desc(priv->pci_dev, &priv->ucode_init);
2440
2441 priv->ucode_init_data.len = init_data_size;
2442 iwl_alloc_fw_desc(priv->pci_dev, &priv->ucode_init_data);
2443
2444 if (!priv->ucode_init.v_addr || !priv->ucode_init_data.v_addr)
2445 goto err_pci_alloc;
2446 }
2447
2448 /* Bootstrap (instructions only, no data) */
2449 if (boot_size) {
2450 priv->ucode_boot.len = boot_size;
2451 iwl_alloc_fw_desc(priv->pci_dev, &priv->ucode_boot);
2452
2453 if (!priv->ucode_boot.v_addr)
2454 goto err_pci_alloc;
2455 }
2456
2457 /* Copy images into buffers for card's bus-master reads ... */
2458
2459 /* Runtime instructions (first block of data in file) */
2460 src = &ucode->data[0];
2461 len = priv->ucode_code.len;
2462 IWL_DEBUG_INFO(priv,
2463 "Copying (but not loading) uCode instr len %zd\n", len);
2464 memcpy(priv->ucode_code.v_addr, src, len);
2465 IWL_DEBUG_INFO(priv, "uCode instr buf vaddr = 0x%p, paddr = 0x%08x\n",
2466 priv->ucode_code.v_addr, (u32)priv->ucode_code.p_addr);
2467
2468 /* Runtime data (2nd block)
2469 * NOTE: Copy into backup buffer will be done in iwl3945_up() */
2470 src = &ucode->data[inst_size];
2471 len = priv->ucode_data.len;
2472 IWL_DEBUG_INFO(priv,
2473 "Copying (but not loading) uCode data len %zd\n", len);
2474 memcpy(priv->ucode_data.v_addr, src, len);
2475 memcpy(priv->ucode_data_backup.v_addr, src, len);
2476
2477 /* Initialization instructions (3rd block) */
2478 if (init_size) {
2479 src = &ucode->data[inst_size + data_size];
2480 len = priv->ucode_init.len;
2481 IWL_DEBUG_INFO(priv,
2482 "Copying (but not loading) init instr len %zd\n", len);
2483 memcpy(priv->ucode_init.v_addr, src, len);
2484 }
2485
2486 /* Initialization data (4th block) */
2487 if (init_data_size) {
2488 src = &ucode->data[inst_size + data_size + init_size];
2489 len = priv->ucode_init_data.len;
2490 IWL_DEBUG_INFO(priv,
2491 "Copying (but not loading) init data len %zd\n", len);
2492 memcpy(priv->ucode_init_data.v_addr, src, len);
2493 }
2494
2495 /* Bootstrap instructions (5th block) */
2496 src = &ucode->data[inst_size + data_size + init_size + init_data_size];
2497 len = priv->ucode_boot.len;
2498 IWL_DEBUG_INFO(priv,
2499 "Copying (but not loading) boot instr len %zd\n", len);
2500 memcpy(priv->ucode_boot.v_addr, src, len);
2501
2502 /* We have our copies now, allow OS release its copies */
2503 release_firmware(ucode_raw);
2504 return 0;
2505
2506 err_pci_alloc:
2507 IWL_ERR(priv, "failed to allocate pci memory\n");
2508 ret = -ENOMEM;
2509 iwl3945_dealloc_ucode_pci(priv);
2510
2511 err_release:
2512 release_firmware(ucode_raw);
2513
2514 error:
2515 return ret;
2516 }
2517
2518
2519 /**
2520 * iwl3945_set_ucode_ptrs - Set uCode address location
2521 *
2522 * Tell initialization uCode where to find runtime uCode.
2523 *
2524 * BSM registers initially contain pointers to initialization uCode.
2525 * We need to replace them to load runtime uCode inst and data,
2526 * and to save runtime data when powering down.
2527 */
2528 static int iwl3945_set_ucode_ptrs(struct iwl_priv *priv)
2529 {
2530 dma_addr_t pinst;
2531 dma_addr_t pdata;
2532 int rc = 0;
2533 unsigned long flags;
2534
2535 /* bits 31:0 for 3945 */
2536 pinst = priv->ucode_code.p_addr;
2537 pdata = priv->ucode_data_backup.p_addr;
2538
2539 spin_lock_irqsave(&priv->lock, flags);
2540 rc = iwl_grab_nic_access(priv);
2541 if (rc) {
2542 spin_unlock_irqrestore(&priv->lock, flags);
2543 return rc;
2544 }
2545
2546 /* Tell bootstrap uCode where to find image to load */
2547 iwl_write_prph(priv, BSM_DRAM_INST_PTR_REG, pinst);
2548 iwl_write_prph(priv, BSM_DRAM_DATA_PTR_REG, pdata);
2549 iwl_write_prph(priv, BSM_DRAM_DATA_BYTECOUNT_REG,
2550 priv->ucode_data.len);
2551
2552 /* Inst byte count must be last to set up, bit 31 signals uCode
2553 * that all new ptr/size info is in place */
2554 iwl_write_prph(priv, BSM_DRAM_INST_BYTECOUNT_REG,
2555 priv->ucode_code.len | BSM_DRAM_INST_LOAD);
2556
2557 iwl_release_nic_access(priv);
2558
2559 spin_unlock_irqrestore(&priv->lock, flags);
2560
2561 IWL_DEBUG_INFO(priv, "Runtime uCode pointers are set.\n");
2562
2563 return rc;
2564 }
2565
2566 /**
2567 * iwl3945_init_alive_start - Called after REPLY_ALIVE notification received
2568 *
2569 * Called after REPLY_ALIVE notification received from "initialize" uCode.
2570 *
2571 * Tell "initialize" uCode to go ahead and load the runtime uCode.
2572 */
2573 static void iwl3945_init_alive_start(struct iwl_priv *priv)
2574 {
2575 /* Check alive response for "valid" sign from uCode */
2576 if (priv->card_alive_init.is_valid != UCODE_VALID_OK) {
2577 /* We had an error bringing up the hardware, so take it
2578 * all the way back down so we can try again */
2579 IWL_DEBUG_INFO(priv, "Initialize Alive failed.\n");
2580 goto restart;
2581 }
2582
2583 /* Bootstrap uCode has loaded initialize uCode ... verify inst image.
2584 * This is a paranoid check, because we would not have gotten the
2585 * "initialize" alive if code weren't properly loaded. */
2586 if (iwl3945_verify_ucode(priv)) {
2587 /* Runtime instruction load was bad;
2588 * take it all the way back down so we can try again */
2589 IWL_DEBUG_INFO(priv, "Bad \"initialize\" uCode load.\n");
2590 goto restart;
2591 }
2592
2593 /* Send pointers to protocol/runtime uCode image ... init code will
2594 * load and launch runtime uCode, which will send us another "Alive"
2595 * notification. */
2596 IWL_DEBUG_INFO(priv, "Initialization Alive received.\n");
2597 if (iwl3945_set_ucode_ptrs(priv)) {
2598 /* Runtime instruction load won't happen;
2599 * take it all the way back down so we can try again */
2600 IWL_DEBUG_INFO(priv, "Couldn't set up uCode pointers.\n");
2601 goto restart;
2602 }
2603 return;
2604
2605 restart:
2606 queue_work(priv->workqueue, &priv->restart);
2607 }
2608
2609 /**
2610 * iwl3945_alive_start - called after REPLY_ALIVE notification received
2611 * from protocol/runtime uCode (initialization uCode's
2612 * Alive gets handled by iwl3945_init_alive_start()).
2613 */
2614 static void iwl3945_alive_start(struct iwl_priv *priv)
2615 {
2616 int rc = 0;
2617 int thermal_spin = 0;
2618 u32 rfkill;
2619
2620 IWL_DEBUG_INFO(priv, "Runtime Alive received.\n");
2621
2622 if (priv->card_alive.is_valid != UCODE_VALID_OK) {
2623 /* We had an error bringing up the hardware, so take it
2624 * all the way back down so we can try again */
2625 IWL_DEBUG_INFO(priv, "Alive failed.\n");
2626 goto restart;
2627 }
2628
2629 /* Initialize uCode has loaded Runtime uCode ... verify inst image.
2630 * This is a paranoid check, because we would not have gotten the
2631 * "runtime" alive if code weren't properly loaded. */
2632 if (iwl3945_verify_ucode(priv)) {
2633 /* Runtime instruction load was bad;
2634 * take it all the way back down so we can try again */
2635 IWL_DEBUG_INFO(priv, "Bad runtime uCode load.\n");
2636 goto restart;
2637 }
2638
2639 priv->cfg->ops->smgmt->clear_station_table(priv);
2640
2641 rc = iwl_grab_nic_access(priv);
2642 if (rc) {
2643 IWL_WARN(priv, "Can not read RFKILL status from adapter\n");
2644 return;
2645 }
2646
2647 rfkill = iwl_read_prph(priv, APMG_RFKILL_REG);
2648 IWL_DEBUG_INFO(priv, "RFKILL status: 0x%x\n", rfkill);
2649 iwl_release_nic_access(priv);
2650
2651 if (rfkill & 0x1) {
2652 clear_bit(STATUS_RF_KILL_HW, &priv->status);
2653 /* if RFKILL is not on, then wait for thermal
2654 * sensor in adapter to kick in */
2655 while (iwl3945_hw_get_temperature(priv) == 0) {
2656 thermal_spin++;
2657 udelay(10);
2658 }
2659
2660 if (thermal_spin)
2661 IWL_DEBUG_INFO(priv, "Thermal calibration took %dus\n",
2662 thermal_spin * 10);
2663 } else
2664 set_bit(STATUS_RF_KILL_HW, &priv->status);
2665
2666 /* After the ALIVE response, we can send commands to 3945 uCode */
2667 set_bit(STATUS_ALIVE, &priv->status);
2668
2669 if (iwl_is_rfkill(priv))
2670 return;
2671
2672 ieee80211_wake_queues(priv->hw);
2673
2674 priv->active_rate = priv->rates_mask;
2675 priv->active_rate_basic = priv->rates_mask & IWL_BASIC_RATES_MASK;
2676
2677 iwl_power_update_mode(priv, false);
2678
2679 if (iwl_is_associated(priv)) {
2680 struct iwl3945_rxon_cmd *active_rxon =
2681 (struct iwl3945_rxon_cmd *)(&priv->active_rxon);
2682
2683 memcpy(&priv->staging_rxon, &priv->active_rxon,
2684 sizeof(priv->staging_rxon));
2685 active_rxon->filter_flags &= ~RXON_FILTER_ASSOC_MSK;
2686 } else {
2687 /* Initialize our rx_config data */
2688 iwl_connection_init_rx_config(priv, priv->iw_mode);
2689 }
2690
2691 /* Configure Bluetooth device coexistence support */
2692 iwl_send_bt_config(priv);
2693
2694 /* Configure the adapter for unassociated operation */
2695 iwlcore_commit_rxon(priv);
2696
2697 iwl3945_reg_txpower_periodic(priv);
2698
2699 iwl3945_led_register(priv);
2700
2701 IWL_DEBUG_INFO(priv, "ALIVE processing complete.\n");
2702 set_bit(STATUS_READY, &priv->status);
2703 wake_up_interruptible(&priv->wait_command_queue);
2704
2705 /* reassociate for ADHOC mode */
2706 if (priv->vif && (priv->iw_mode == NL80211_IFTYPE_ADHOC)) {
2707 struct sk_buff *beacon = ieee80211_beacon_get(priv->hw,
2708 priv->vif);
2709 if (beacon)
2710 iwl_mac_beacon_update(priv->hw, beacon);
2711 }
2712
2713 if (test_and_clear_bit(STATUS_MODE_PENDING, &priv->status))
2714 iwl_set_mode(priv, priv->iw_mode);
2715
2716 return;
2717
2718 restart:
2719 queue_work(priv->workqueue, &priv->restart);
2720 }
2721
2722 static void iwl3945_cancel_deferred_work(struct iwl_priv *priv);
2723
2724 static void __iwl3945_down(struct iwl_priv *priv)
2725 {
2726 unsigned long flags;
2727 int exit_pending = test_bit(STATUS_EXIT_PENDING, &priv->status);
2728 struct ieee80211_conf *conf = NULL;
2729
2730 IWL_DEBUG_INFO(priv, DRV_NAME " is going down\n");
2731
2732 conf = ieee80211_get_hw_conf(priv->hw);
2733
2734 if (!exit_pending)
2735 set_bit(STATUS_EXIT_PENDING, &priv->status);
2736
2737 iwl3945_led_unregister(priv);
2738 priv->cfg->ops->smgmt->clear_station_table(priv);
2739
2740 /* Unblock any waiting calls */
2741 wake_up_interruptible_all(&priv->wait_command_queue);
2742
2743 /* Wipe out the EXIT_PENDING status bit if we are not actually
2744 * exiting the module */
2745 if (!exit_pending)
2746 clear_bit(STATUS_EXIT_PENDING, &priv->status);
2747
2748 /* stop and reset the on-board processor */
2749 iwl_write32(priv, CSR_RESET, CSR_RESET_REG_FLAG_NEVO_RESET);
2750
2751 /* tell the device to stop sending interrupts */
2752 spin_lock_irqsave(&priv->lock, flags);
2753 iwl_disable_interrupts(priv);
2754 spin_unlock_irqrestore(&priv->lock, flags);
2755 iwl_synchronize_irq(priv);
2756
2757 if (priv->mac80211_registered)
2758 ieee80211_stop_queues(priv->hw);
2759
2760 /* If we have not previously called iwl3945_init() then
2761 * clear all bits but the RF Kill bits and return */
2762 if (!iwl_is_init(priv)) {
2763 priv->status = test_bit(STATUS_RF_KILL_HW, &priv->status) <<
2764 STATUS_RF_KILL_HW |
2765 test_bit(STATUS_RF_KILL_SW, &priv->status) <<
2766 STATUS_RF_KILL_SW |
2767 test_bit(STATUS_GEO_CONFIGURED, &priv->status) <<
2768 STATUS_GEO_CONFIGURED |
2769 test_bit(STATUS_EXIT_PENDING, &priv->status) <<
2770 STATUS_EXIT_PENDING;
2771 goto exit;
2772 }
2773
2774 /* ...otherwise clear out all the status bits but the RF Kill
2775 * bits and continue taking the NIC down. */
2776 priv->status &= test_bit(STATUS_RF_KILL_HW, &priv->status) <<
2777 STATUS_RF_KILL_HW |
2778 test_bit(STATUS_RF_KILL_SW, &priv->status) <<
2779 STATUS_RF_KILL_SW |
2780 test_bit(STATUS_GEO_CONFIGURED, &priv->status) <<
2781 STATUS_GEO_CONFIGURED |
2782 test_bit(STATUS_FW_ERROR, &priv->status) <<
2783 STATUS_FW_ERROR |
2784 test_bit(STATUS_EXIT_PENDING, &priv->status) <<
2785 STATUS_EXIT_PENDING;
2786
2787 priv->cfg->ops->lib->apm_ops.reset(priv);
2788 spin_lock_irqsave(&priv->lock, flags);
2789 iwl_clear_bit(priv, CSR_GP_CNTRL, CSR_GP_CNTRL_REG_FLAG_MAC_ACCESS_REQ);
2790 spin_unlock_irqrestore(&priv->lock, flags);
2791
2792 iwl3945_hw_txq_ctx_stop(priv);
2793 iwl3945_hw_rxq_stop(priv);
2794
2795 spin_lock_irqsave(&priv->lock, flags);
2796 if (!iwl_grab_nic_access(priv)) {
2797 iwl_write_prph(priv, APMG_CLK_DIS_REG,
2798 APMG_CLK_VAL_DMA_CLK_RQT);
2799 iwl_release_nic_access(priv);
2800 }
2801 spin_unlock_irqrestore(&priv->lock, flags);
2802
2803 udelay(5);
2804
2805 if (exit_pending)
2806 priv->cfg->ops->lib->apm_ops.stop(priv);
2807 else
2808 priv->cfg->ops->lib->apm_ops.reset(priv);
2809
2810 exit:
2811 memset(&priv->card_alive, 0, sizeof(struct iwl_alive_resp));
2812
2813 if (priv->ibss_beacon)
2814 dev_kfree_skb(priv->ibss_beacon);
2815 priv->ibss_beacon = NULL;
2816
2817 /* clear out any free frames */
2818 iwl3945_clear_free_frames(priv);
2819 }
2820
2821 static void iwl3945_down(struct iwl_priv *priv)
2822 {
2823 mutex_lock(&priv->mutex);
2824 __iwl3945_down(priv);
2825 mutex_unlock(&priv->mutex);
2826
2827 iwl3945_cancel_deferred_work(priv);
2828 }
2829
2830 #define MAX_HW_RESTARTS 5
2831
2832 static int __iwl3945_up(struct iwl_priv *priv)
2833 {
2834 int rc, i;
2835
2836 if (test_bit(STATUS_EXIT_PENDING, &priv->status)) {
2837 IWL_WARN(priv, "Exit pending; will not bring the NIC up\n");
2838 return -EIO;
2839 }
2840
2841 if (test_bit(STATUS_RF_KILL_SW, &priv->status)) {
2842 IWL_WARN(priv, "Radio disabled by SW RF kill (module "
2843 "parameter)\n");
2844 return -ENODEV;
2845 }
2846
2847 if (!priv->ucode_data_backup.v_addr || !priv->ucode_data.v_addr) {
2848 IWL_ERR(priv, "ucode not available for device bring up\n");
2849 return -EIO;
2850 }
2851
2852 /* If platform's RF_KILL switch is NOT set to KILL */
2853 if (iwl_read32(priv, CSR_GP_CNTRL) &
2854 CSR_GP_CNTRL_REG_FLAG_HW_RF_KILL_SW)
2855 clear_bit(STATUS_RF_KILL_HW, &priv->status);
2856 else {
2857 set_bit(STATUS_RF_KILL_HW, &priv->status);
2858 IWL_WARN(priv, "Radio disabled by HW RF Kill switch\n");
2859 return -ENODEV;
2860 }
2861
2862 iwl_write32(priv, CSR_INT, 0xFFFFFFFF);
2863
2864 rc = iwl3945_hw_nic_init(priv);
2865 if (rc) {
2866 IWL_ERR(priv, "Unable to int nic\n");
2867 return rc;
2868 }
2869
2870 /* make sure rfkill handshake bits are cleared */
2871 iwl_write32(priv, CSR_UCODE_DRV_GP1_CLR, CSR_UCODE_SW_BIT_RFKILL);
2872 iwl_write32(priv, CSR_UCODE_DRV_GP1_CLR,
2873 CSR_UCODE_DRV_GP1_BIT_CMD_BLOCKED);
2874
2875 /* clear (again), then enable host interrupts */
2876 iwl_write32(priv, CSR_INT, 0xFFFFFFFF);
2877 iwl_enable_interrupts(priv);
2878
2879 /* really make sure rfkill handshake bits are cleared */
2880 iwl_write32(priv, CSR_UCODE_DRV_GP1_CLR, CSR_UCODE_SW_BIT_RFKILL);
2881 iwl_write32(priv, CSR_UCODE_DRV_GP1_CLR, CSR_UCODE_SW_BIT_RFKILL);
2882
2883 /* Copy original ucode data image from disk into backup cache.
2884 * This will be used to initialize the on-board processor's
2885 * data SRAM for a clean start when the runtime program first loads. */
2886 memcpy(priv->ucode_data_backup.v_addr, priv->ucode_data.v_addr,
2887 priv->ucode_data.len);
2888
2889 /* We return success when we resume from suspend and rf_kill is on. */
2890 if (test_bit(STATUS_RF_KILL_HW, &priv->status))
2891 return 0;
2892
2893 for (i = 0; i < MAX_HW_RESTARTS; i++) {
2894
2895 priv->cfg->ops->smgmt->clear_station_table(priv);
2896
2897 /* load bootstrap state machine,
2898 * load bootstrap program into processor's memory,
2899 * prepare to load the "initialize" uCode */
2900 priv->cfg->ops->lib->load_ucode(priv);
2901
2902 if (rc) {
2903 IWL_ERR(priv,
2904 "Unable to set up bootstrap uCode: %d\n", rc);
2905 continue;
2906 }
2907
2908 /* start card; "initialize" will load runtime ucode */
2909 iwl3945_nic_start(priv);
2910
2911 IWL_DEBUG_INFO(priv, DRV_NAME " is coming up\n");
2912
2913 return 0;
2914 }
2915
2916 set_bit(STATUS_EXIT_PENDING, &priv->status);
2917 __iwl3945_down(priv);
2918 clear_bit(STATUS_EXIT_PENDING, &priv->status);
2919
2920 /* tried to restart and config the device for as long as our
2921 * patience could withstand */
2922 IWL_ERR(priv, "Unable to initialize device after %d attempts.\n", i);
2923 return -EIO;
2924 }
2925
2926
2927 /*****************************************************************************
2928 *
2929 * Workqueue callbacks
2930 *
2931 *****************************************************************************/
2932
2933 static void iwl3945_bg_init_alive_start(struct work_struct *data)
2934 {
2935 struct iwl_priv *priv =
2936 container_of(data, struct iwl_priv, init_alive_start.work);
2937
2938 if (test_bit(STATUS_EXIT_PENDING, &priv->status))
2939 return;
2940
2941 mutex_lock(&priv->mutex);
2942 iwl3945_init_alive_start(priv);
2943 mutex_unlock(&priv->mutex);
2944 }
2945
2946 static void iwl3945_bg_alive_start(struct work_struct *data)
2947 {
2948 struct iwl_priv *priv =
2949 container_of(data, struct iwl_priv, alive_start.work);
2950
2951 if (test_bit(STATUS_EXIT_PENDING, &priv->status))
2952 return;
2953
2954 mutex_lock(&priv->mutex);
2955 iwl3945_alive_start(priv);
2956 mutex_unlock(&priv->mutex);
2957 }
2958
2959 static void iwl3945_rfkill_poll(struct work_struct *data)
2960 {
2961 struct iwl_priv *priv =
2962 container_of(data, struct iwl_priv, rfkill_poll.work);
2963 unsigned long status = priv->status;
2964
2965 if (iwl_read32(priv, CSR_GP_CNTRL) & CSR_GP_CNTRL_REG_FLAG_HW_RF_KILL_SW)
2966 clear_bit(STATUS_RF_KILL_HW, &priv->status);
2967 else
2968 set_bit(STATUS_RF_KILL_HW, &priv->status);
2969
2970 if (test_bit(STATUS_RF_KILL_HW, &status) != test_bit(STATUS_RF_KILL_HW, &priv->status))
2971 queue_work(priv->workqueue, &priv->rf_kill);
2972
2973 queue_delayed_work(priv->workqueue, &priv->rfkill_poll,
2974 round_jiffies_relative(2 * HZ));
2975
2976 }
2977
2978 #define IWL_SCAN_CHECK_WATCHDOG (7 * HZ)
2979 static void iwl3945_bg_request_scan(struct work_struct *data)
2980 {
2981 struct iwl_priv *priv =
2982 container_of(data, struct iwl_priv, request_scan);
2983 struct iwl_host_cmd cmd = {
2984 .id = REPLY_SCAN_CMD,
2985 .len = sizeof(struct iwl3945_scan_cmd),
2986 .meta.flags = CMD_SIZE_HUGE,
2987 };
2988 int rc = 0;
2989 struct iwl3945_scan_cmd *scan;
2990 struct ieee80211_conf *conf = NULL;
2991 u8 n_probes = 0;
2992 enum ieee80211_band band;
2993 bool is_active = false;
2994
2995 conf = ieee80211_get_hw_conf(priv->hw);
2996
2997 mutex_lock(&priv->mutex);
2998
2999 if (!iwl_is_ready(priv)) {
3000 IWL_WARN(priv, "request scan called when driver not ready.\n");
3001 goto done;
3002 }
3003
3004 /* Make sure the scan wasn't canceled before this queued work
3005 * was given the chance to run... */
3006 if (!test_bit(STATUS_SCANNING, &priv->status))
3007 goto done;
3008
3009 /* This should never be called or scheduled if there is currently
3010 * a scan active in the hardware. */
3011 if (test_bit(STATUS_SCAN_HW, &priv->status)) {
3012 IWL_DEBUG_INFO(priv, "Multiple concurrent scan requests "
3013 "Ignoring second request.\n");
3014 rc = -EIO;
3015 goto done;
3016 }
3017
3018 if (test_bit(STATUS_EXIT_PENDING, &priv->status)) {
3019 IWL_DEBUG_SCAN(priv, "Aborting scan due to device shutdown\n");
3020 goto done;
3021 }
3022
3023 if (test_bit(STATUS_SCAN_ABORTING, &priv->status)) {
3024 IWL_DEBUG_HC(priv,
3025 "Scan request while abort pending. Queuing.\n");
3026 goto done;
3027 }
3028
3029 if (iwl_is_rfkill(priv)) {
3030 IWL_DEBUG_HC(priv, "Aborting scan due to RF Kill activation\n");
3031 goto done;
3032 }
3033
3034 if (!test_bit(STATUS_READY, &priv->status)) {
3035 IWL_DEBUG_HC(priv,
3036 "Scan request while uninitialized. Queuing.\n");
3037 goto done;
3038 }
3039
3040 if (!priv->scan_bands) {
3041 IWL_DEBUG_HC(priv, "Aborting scan due to no requested bands\n");
3042 goto done;
3043 }
3044
3045 if (!priv->scan) {
3046 priv->scan = kmalloc(sizeof(struct iwl3945_scan_cmd) +
3047 IWL_MAX_SCAN_SIZE, GFP_KERNEL);
3048 if (!priv->scan) {
3049 rc = -ENOMEM;
3050 goto done;
3051 }
3052 }
3053 scan = priv->scan;
3054 memset(scan, 0, sizeof(struct iwl3945_scan_cmd) + IWL_MAX_SCAN_SIZE);
3055
3056 scan->quiet_plcp_th = IWL_PLCP_QUIET_THRESH;
3057 scan->quiet_time = IWL_ACTIVE_QUIET_TIME;
3058
3059 if (iwl_is_associated(priv)) {
3060 u16 interval = 0;
3061 u32 extra;
3062 u32 suspend_time = 100;
3063 u32 scan_suspend_time = 100;
3064 unsigned long flags;
3065
3066 IWL_DEBUG_INFO(priv, "Scanning while associated...\n");
3067
3068 spin_lock_irqsave(&priv->lock, flags);
3069 interval = priv->beacon_int;
3070 spin_unlock_irqrestore(&priv->lock, flags);
3071
3072 scan->suspend_time = 0;
3073 scan->max_out_time = cpu_to_le32(200 * 1024);
3074 if (!interval)
3075 interval = suspend_time;
3076 /*
3077 * suspend time format:
3078 * 0-19: beacon interval in usec (time before exec.)
3079 * 20-23: 0
3080 * 24-31: number of beacons (suspend between channels)
3081 */
3082
3083 extra = (suspend_time / interval) << 24;
3084 scan_suspend_time = 0xFF0FFFFF &
3085 (extra | ((suspend_time % interval) * 1024));
3086
3087 scan->suspend_time = cpu_to_le32(scan_suspend_time);
3088 IWL_DEBUG_SCAN(priv, "suspend_time 0x%X beacon interval %d\n",
3089 scan_suspend_time, interval);
3090 }
3091
3092 if (priv->scan_request->n_ssids) {
3093 int i, p = 0;
3094 IWL_DEBUG_SCAN(priv, "Kicking off active scan\n");
3095 for (i = 0; i < priv->scan_request->n_ssids; i++) {
3096 /* always does wildcard anyway */
3097 if (!priv->scan_request->ssids[i].ssid_len)
3098 continue;
3099 scan->direct_scan[p].id = WLAN_EID_SSID;
3100 scan->direct_scan[p].len =
3101 priv->scan_request->ssids[i].ssid_len;
3102 memcpy(scan->direct_scan[p].ssid,
3103 priv->scan_request->ssids[i].ssid,
3104 priv->scan_request->ssids[i].ssid_len);
3105 n_probes++;
3106 p++;
3107 }
3108 is_active = true;
3109 } else
3110 IWL_DEBUG_SCAN(priv, "Kicking off passive scan.\n");
3111
3112 /* We don't build a direct scan probe request; the uCode will do
3113 * that based on the direct_mask added to each channel entry */
3114 scan->tx_cmd.tx_flags = TX_CMD_FLG_SEQ_CTL_MSK;
3115 scan->tx_cmd.sta_id = priv->hw_params.bcast_sta_id;
3116 scan->tx_cmd.stop_time.life_time = TX_CMD_LIFE_TIME_INFINITE;
3117
3118 /* flags + rate selection */
3119
3120 if (priv->scan_bands & BIT(IEEE80211_BAND_2GHZ)) {
3121 scan->flags = RXON_FLG_BAND_24G_MSK | RXON_FLG_AUTO_DETECT_MSK;
3122 scan->tx_cmd.rate = IWL_RATE_1M_PLCP;
3123 scan->good_CRC_th = 0;
3124 band = IEEE80211_BAND_2GHZ;
3125 } else if (priv->scan_bands & BIT(IEEE80211_BAND_5GHZ)) {
3126 scan->tx_cmd.rate = IWL_RATE_6M_PLCP;
3127 /*
3128 * If active scaning is requested but a certain channel
3129 * is marked passive, we can do active scanning if we
3130 * detect transmissions.
3131 */
3132 scan->good_CRC_th = is_active ? IWL_GOOD_CRC_TH : 0;
3133 band = IEEE80211_BAND_5GHZ;
3134 } else {
3135 IWL_WARN(priv, "Invalid scan band count\n");
3136 goto done;
3137 }
3138
3139 scan->tx_cmd.len = cpu_to_le16(
3140 iwl_fill_probe_req(priv,
3141 (struct ieee80211_mgmt *)scan->data,
3142 priv->scan_request->ie,
3143 priv->scan_request->ie_len,
3144 IWL_MAX_SCAN_SIZE - sizeof(*scan)));
3145
3146 /* select Rx antennas */
3147 scan->flags |= iwl3945_get_antenna_flags(priv);
3148
3149 if (iwl_is_monitor_mode(priv))
3150 scan->filter_flags = RXON_FILTER_PROMISC_MSK;
3151
3152 scan->channel_count =
3153 iwl3945_get_channels_for_scan(priv, band, is_active, n_probes,
3154 (void *)&scan->data[le16_to_cpu(scan->tx_cmd.len)]);
3155
3156 if (scan->channel_count == 0) {
3157 IWL_DEBUG_SCAN(priv, "channel count %d\n", scan->channel_count);
3158 goto done;
3159 }
3160
3161 cmd.len += le16_to_cpu(scan->tx_cmd.len) +
3162 scan->channel_count * sizeof(struct iwl3945_scan_channel);
3163 cmd.data = scan;
3164 scan->len = cpu_to_le16(cmd.len);
3165
3166 set_bit(STATUS_SCAN_HW, &priv->status);
3167 rc = iwl_send_cmd_sync(priv, &cmd);
3168 if (rc)
3169 goto done;
3170
3171 queue_delayed_work(priv->workqueue, &priv->scan_check,
3172 IWL_SCAN_CHECK_WATCHDOG);
3173
3174 mutex_unlock(&priv->mutex);
3175 return;
3176
3177 done:
3178 /* can not perform scan make sure we clear scanning
3179 * bits from status so next scan request can be performed.
3180 * if we dont clear scanning status bit here all next scan
3181 * will fail
3182 */
3183 clear_bit(STATUS_SCAN_HW, &priv->status);
3184 clear_bit(STATUS_SCANNING, &priv->status);
3185
3186 /* inform mac80211 scan aborted */
3187 queue_work(priv->workqueue, &priv->scan_completed);
3188 mutex_unlock(&priv->mutex);
3189 }
3190
3191 static void iwl3945_bg_up(struct work_struct *data)
3192 {
3193 struct iwl_priv *priv = container_of(data, struct iwl_priv, up);
3194
3195 if (test_bit(STATUS_EXIT_PENDING, &priv->status))
3196 return;
3197
3198 mutex_lock(&priv->mutex);
3199 __iwl3945_up(priv);
3200 mutex_unlock(&priv->mutex);
3201 iwl_rfkill_set_hw_state(priv);
3202 }
3203
3204 static void iwl3945_bg_restart(struct work_struct *data)
3205 {
3206 struct iwl_priv *priv = container_of(data, struct iwl_priv, restart);
3207
3208 if (test_bit(STATUS_EXIT_PENDING, &priv->status))
3209 return;
3210
3211 if (test_and_clear_bit(STATUS_FW_ERROR, &priv->status)) {
3212 mutex_lock(&priv->mutex);
3213 priv->vif = NULL;
3214 priv->is_open = 0;
3215 mutex_unlock(&priv->mutex);
3216 iwl3945_down(priv);
3217 ieee80211_restart_hw(priv->hw);
3218 } else {
3219 iwl3945_down(priv);
3220 queue_work(priv->workqueue, &priv->up);
3221 }
3222 }
3223
3224 static void iwl3945_bg_rx_replenish(struct work_struct *data)
3225 {
3226 struct iwl_priv *priv =
3227 container_of(data, struct iwl_priv, rx_replenish);
3228
3229 if (test_bit(STATUS_EXIT_PENDING, &priv->status))
3230 return;
3231
3232 mutex_lock(&priv->mutex);
3233 iwl3945_rx_replenish(priv);
3234 mutex_unlock(&priv->mutex);
3235 }
3236
3237 #define IWL_DELAY_NEXT_SCAN (HZ*2)
3238
3239 void iwl3945_post_associate(struct iwl_priv *priv)
3240 {
3241 int rc = 0;
3242 struct ieee80211_conf *conf = NULL;
3243
3244 if (priv->iw_mode == NL80211_IFTYPE_AP) {
3245 IWL_ERR(priv, "%s Should not be called in AP mode\n", __func__);
3246 return;
3247 }
3248
3249
3250 IWL_DEBUG_ASSOC(priv, "Associated as %d to: %pM\n",
3251 priv->assoc_id, priv->active_rxon.bssid_addr);
3252
3253 if (test_bit(STATUS_EXIT_PENDING, &priv->status))
3254 return;
3255
3256 if (!priv->vif || !priv->is_open)
3257 return;
3258
3259 iwl_scan_cancel_timeout(priv, 200);
3260
3261 conf = ieee80211_get_hw_conf(priv->hw);
3262
3263 priv->staging_rxon.filter_flags &= ~RXON_FILTER_ASSOC_MSK;
3264 iwlcore_commit_rxon(priv);
3265
3266 memset(&priv->rxon_timing, 0, sizeof(struct iwl_rxon_time_cmd));
3267 iwl3945_setup_rxon_timing(priv);
3268 rc = iwl_send_cmd_pdu(priv, REPLY_RXON_TIMING,
3269 sizeof(priv->rxon_timing), &priv->rxon_timing);
3270 if (rc)
3271 IWL_WARN(priv, "REPLY_RXON_TIMING failed - "
3272 "Attempting to continue.\n");
3273
3274 priv->staging_rxon.filter_flags |= RXON_FILTER_ASSOC_MSK;
3275
3276 priv->staging_rxon.assoc_id = cpu_to_le16(priv->assoc_id);
3277
3278 IWL_DEBUG_ASSOC(priv, "assoc id %d beacon interval %d\n",
3279 priv->assoc_id, priv->beacon_int);
3280
3281 if (priv->assoc_capability & WLAN_CAPABILITY_SHORT_PREAMBLE)
3282 priv->staging_rxon.flags |= RXON_FLG_SHORT_PREAMBLE_MSK;
3283 else
3284 priv->staging_rxon.flags &= ~RXON_FLG_SHORT_PREAMBLE_MSK;
3285
3286 if (priv->staging_rxon.flags & RXON_FLG_BAND_24G_MSK) {
3287 if (priv->assoc_capability & WLAN_CAPABILITY_SHORT_SLOT_TIME)
3288 priv->staging_rxon.flags |= RXON_FLG_SHORT_SLOT_MSK;
3289 else
3290 priv->staging_rxon.flags &= ~RXON_FLG_SHORT_SLOT_MSK;
3291
3292 if (priv->iw_mode == NL80211_IFTYPE_ADHOC)
3293 priv->staging_rxon.flags &= ~RXON_FLG_SHORT_SLOT_MSK;
3294
3295 }
3296
3297 iwlcore_commit_rxon(priv);
3298
3299 switch (priv->iw_mode) {
3300 case NL80211_IFTYPE_STATION:
3301 iwl3945_rate_scale_init(priv->hw, IWL_AP_ID);
3302 break;
3303
3304 case NL80211_IFTYPE_ADHOC:
3305
3306 priv->assoc_id = 1;
3307 priv->cfg->ops->smgmt->add_station(priv, priv->bssid, 0, 0, NULL);
3308 iwl3945_sync_sta(priv, IWL_STA_ID,
3309 (priv->band == IEEE80211_BAND_5GHZ) ?
3310 IWL_RATE_6M_PLCP : IWL_RATE_1M_PLCP,
3311 CMD_ASYNC);
3312 iwl3945_rate_scale_init(priv->hw, IWL_STA_ID);
3313 iwl3945_send_beacon_cmd(priv);
3314
3315 break;
3316
3317 default:
3318 IWL_ERR(priv, "%s Should not be called in %d mode\n",
3319 __func__, priv->iw_mode);
3320 break;
3321 }
3322
3323 iwl_activate_qos(priv, 0);
3324
3325 /* we have just associated, don't start scan too early */
3326 priv->next_scan_jiffies = jiffies + IWL_DELAY_NEXT_SCAN;
3327 }
3328
3329 /*****************************************************************************
3330 *
3331 * mac80211 entry point functions
3332 *
3333 *****************************************************************************/
3334
3335 #define UCODE_READY_TIMEOUT (2 * HZ)
3336
3337 static int iwl3945_mac_start(struct ieee80211_hw *hw)
3338 {
3339 struct iwl_priv *priv = hw->priv;
3340 int ret;
3341
3342 IWL_DEBUG_MAC80211(priv, "enter\n");
3343
3344 /* we should be verifying the device is ready to be opened */
3345 mutex_lock(&priv->mutex);
3346
3347 memset(&priv->staging_rxon, 0, sizeof(priv->staging_rxon));
3348 /* fetch ucode file from disk, alloc and copy to bus-master buffers ...
3349 * ucode filename and max sizes are card-specific. */
3350
3351 if (!priv->ucode_code.len) {
3352 ret = iwl3945_read_ucode(priv);
3353 if (ret) {
3354 IWL_ERR(priv, "Could not read microcode: %d\n", ret);
3355 mutex_unlock(&priv->mutex);
3356 goto out_release_irq;
3357 }
3358 }
3359
3360 ret = __iwl3945_up(priv);
3361
3362 mutex_unlock(&priv->mutex);
3363
3364 iwl_rfkill_set_hw_state(priv);
3365
3366 if (ret)
3367 goto out_release_irq;
3368
3369 IWL_DEBUG_INFO(priv, "Start UP work.\n");
3370
3371 /* Wait for START_ALIVE from ucode. Otherwise callbacks from
3372 * mac80211 will not be run successfully. */
3373 ret = wait_event_interruptible_timeout(priv->wait_command_queue,
3374 test_bit(STATUS_READY, &priv->status),
3375 UCODE_READY_TIMEOUT);
3376 if (!ret) {
3377 if (!test_bit(STATUS_READY, &priv->status)) {
3378 IWL_ERR(priv,
3379 "Wait for START_ALIVE timeout after %dms.\n",
3380 jiffies_to_msecs(UCODE_READY_TIMEOUT));
3381 ret = -ETIMEDOUT;
3382 goto out_release_irq;
3383 }
3384 }
3385
3386 /* ucode is running and will send rfkill notifications,
3387 * no need to poll the killswitch state anymore */
3388 cancel_delayed_work(&priv->rfkill_poll);
3389
3390 priv->is_open = 1;
3391 IWL_DEBUG_MAC80211(priv, "leave\n");
3392 return 0;
3393
3394 out_release_irq:
3395 priv->is_open = 0;
3396 IWL_DEBUG_MAC80211(priv, "leave - failed\n");
3397 return ret;
3398 }
3399
3400 static void iwl3945_mac_stop(struct ieee80211_hw *hw)
3401 {
3402 struct iwl_priv *priv = hw->priv;
3403
3404 IWL_DEBUG_MAC80211(priv, "enter\n");
3405
3406 if (!priv->is_open) {
3407 IWL_DEBUG_MAC80211(priv, "leave - skip\n");
3408 return;
3409 }
3410
3411 priv->is_open = 0;
3412
3413 if (iwl_is_ready_rf(priv)) {
3414 /* stop mac, cancel any scan request and clear
3415 * RXON_FILTER_ASSOC_MSK BIT
3416 */
3417 mutex_lock(&priv->mutex);
3418 iwl_scan_cancel_timeout(priv, 100);
3419 mutex_unlock(&priv->mutex);
3420 }
3421
3422 iwl3945_down(priv);
3423
3424 flush_workqueue(priv->workqueue);
3425
3426 /* start polling the killswitch state again */
3427 queue_delayed_work(priv->workqueue, &priv->rfkill_poll,
3428 round_jiffies_relative(2 * HZ));
3429
3430 IWL_DEBUG_MAC80211(priv, "leave\n");
3431 }
3432
3433 static int iwl3945_mac_tx(struct ieee80211_hw *hw, struct sk_buff *skb)
3434 {
3435 struct iwl_priv *priv = hw->priv;
3436
3437 IWL_DEBUG_MAC80211(priv, "enter\n");
3438
3439 IWL_DEBUG_TX(priv, "dev->xmit(%d bytes) at rate 0x%02x\n", skb->len,
3440 ieee80211_get_tx_rate(hw, IEEE80211_SKB_CB(skb))->bitrate);
3441
3442 if (iwl3945_tx_skb(priv, skb))
3443 dev_kfree_skb_any(skb);
3444
3445 IWL_DEBUG_MAC80211(priv, "leave\n");
3446 return NETDEV_TX_OK;
3447 }
3448
3449 void iwl3945_config_ap(struct iwl_priv *priv)
3450 {
3451 int rc = 0;
3452
3453 if (test_bit(STATUS_EXIT_PENDING, &priv->status))
3454 return;
3455
3456 /* The following should be done only at AP bring up */
3457 if (!(iwl_is_associated(priv))) {
3458
3459 /* RXON - unassoc (to set timing command) */
3460 priv->staging_rxon.filter_flags &= ~RXON_FILTER_ASSOC_MSK;
3461 iwlcore_commit_rxon(priv);
3462
3463 /* RXON Timing */
3464 memset(&priv->rxon_timing, 0, sizeof(struct iwl_rxon_time_cmd));
3465 iwl3945_setup_rxon_timing(priv);
3466 rc = iwl_send_cmd_pdu(priv, REPLY_RXON_TIMING,
3467 sizeof(priv->rxon_timing),
3468 &priv->rxon_timing);
3469 if (rc)
3470 IWL_WARN(priv, "REPLY_RXON_TIMING failed - "
3471 "Attempting to continue.\n");
3472
3473 /* FIXME: what should be the assoc_id for AP? */
3474 priv->staging_rxon.assoc_id = cpu_to_le16(priv->assoc_id);
3475 if (priv->assoc_capability & WLAN_CAPABILITY_SHORT_PREAMBLE)
3476 priv->staging_rxon.flags |=
3477 RXON_FLG_SHORT_PREAMBLE_MSK;
3478 else
3479 priv->staging_rxon.flags &=
3480 ~RXON_FLG_SHORT_PREAMBLE_MSK;
3481
3482 if (priv->staging_rxon.flags & RXON_FLG_BAND_24G_MSK) {
3483 if (priv->assoc_capability &
3484 WLAN_CAPABILITY_SHORT_SLOT_TIME)
3485 priv->staging_rxon.flags |=
3486 RXON_FLG_SHORT_SLOT_MSK;
3487 else
3488 priv->staging_rxon.flags &=
3489 ~RXON_FLG_SHORT_SLOT_MSK;
3490
3491 if (priv->iw_mode == NL80211_IFTYPE_ADHOC)
3492 priv->staging_rxon.flags &=
3493 ~RXON_FLG_SHORT_SLOT_MSK;
3494 }
3495 /* restore RXON assoc */
3496 priv->staging_rxon.filter_flags |= RXON_FILTER_ASSOC_MSK;
3497 iwlcore_commit_rxon(priv);
3498 priv->cfg->ops->smgmt->add_station(priv, iwl_bcast_addr, 0, 0, NULL);
3499 }
3500 iwl3945_send_beacon_cmd(priv);
3501
3502 /* FIXME - we need to add code here to detect a totally new
3503 * configuration, reset the AP, unassoc, rxon timing, assoc,
3504 * clear sta table, add BCAST sta... */
3505 }
3506
3507 static int iwl3945_mac_set_key(struct ieee80211_hw *hw, enum set_key_cmd cmd,
3508 struct ieee80211_vif *vif,
3509 struct ieee80211_sta *sta,
3510 struct ieee80211_key_conf *key)
3511 {
3512 struct iwl_priv *priv = hw->priv;
3513 const u8 *addr;
3514 int ret = 0;
3515 u8 sta_id = IWL_INVALID_STATION;
3516 u8 static_key;
3517
3518 IWL_DEBUG_MAC80211(priv, "enter\n");
3519
3520 if (iwl3945_mod_params.sw_crypto) {
3521 IWL_DEBUG_MAC80211(priv, "leave - hwcrypto disabled\n");
3522 return -EOPNOTSUPP;
3523 }
3524
3525 addr = sta ? sta->addr : iwl_bcast_addr;
3526 static_key = !iwl_is_associated(priv);
3527
3528 if (!static_key) {
3529 sta_id = priv->cfg->ops->smgmt->find_station(priv, addr);
3530 if (sta_id == IWL_INVALID_STATION) {
3531 IWL_DEBUG_MAC80211(priv, "leave - %pM not in station map.\n",
3532 addr);
3533 return -EINVAL;
3534 }
3535 }
3536
3537 mutex_lock(&priv->mutex);
3538 iwl_scan_cancel_timeout(priv, 100);
3539 mutex_unlock(&priv->mutex);
3540
3541 switch (cmd) {
3542 case SET_KEY:
3543 if (static_key)
3544 ret = iwl3945_set_static_key(priv, key);
3545 else
3546 ret = iwl3945_set_dynamic_key(priv, key, sta_id);
3547 IWL_DEBUG_MAC80211(priv, "enable hwcrypto key\n");
3548 break;
3549 case DISABLE_KEY:
3550 if (static_key)
3551 ret = iwl3945_remove_static_key(priv);
3552 else
3553 ret = iwl3945_clear_sta_key_info(priv, sta_id);
3554 IWL_DEBUG_MAC80211(priv, "disable hwcrypto key\n");
3555 break;
3556 default:
3557 ret = -EINVAL;
3558 }
3559
3560 IWL_DEBUG_MAC80211(priv, "leave\n");
3561
3562 return ret;
3563 }
3564
3565 /*****************************************************************************
3566 *
3567 * sysfs attributes
3568 *
3569 *****************************************************************************/
3570
3571 #ifdef CONFIG_IWLWIFI_DEBUG
3572
3573 /*
3574 * The following adds a new attribute to the sysfs representation
3575 * of this device driver (i.e. a new file in /sys/bus/pci/drivers/iwl/)
3576 * used for controlling the debug level.
3577 *
3578 * See the level definitions in iwl for details.
3579 */
3580 static ssize_t show_debug_level(struct device *d,
3581 struct device_attribute *attr, char *buf)
3582 {
3583 struct iwl_priv *priv = dev_get_drvdata(d);
3584
3585 return sprintf(buf, "0x%08X\n", priv->debug_level);
3586 }
3587 static ssize_t store_debug_level(struct device *d,
3588 struct device_attribute *attr,
3589 const char *buf, size_t count)
3590 {
3591 struct iwl_priv *priv = dev_get_drvdata(d);
3592 unsigned long val;
3593 int ret;
3594
3595 ret = strict_strtoul(buf, 0, &val);
3596 if (ret)
3597 IWL_INFO(priv, "%s is not in hex or decimal form.\n", buf);
3598 else
3599 priv->debug_level = val;
3600
3601 return strnlen(buf, count);
3602 }
3603
3604 static DEVICE_ATTR(debug_level, S_IWUSR | S_IRUGO,
3605 show_debug_level, store_debug_level);
3606
3607 #endif /* CONFIG_IWLWIFI_DEBUG */
3608
3609 static ssize_t show_temperature(struct device *d,
3610 struct device_attribute *attr, char *buf)
3611 {
3612 struct iwl_priv *priv = dev_get_drvdata(d);
3613
3614 if (!iwl_is_alive(priv))
3615 return -EAGAIN;
3616
3617 return sprintf(buf, "%d\n", iwl3945_hw_get_temperature(priv));
3618 }
3619
3620 static DEVICE_ATTR(temperature, S_IRUGO, show_temperature, NULL);
3621
3622 static ssize_t show_tx_power(struct device *d,
3623 struct device_attribute *attr, char *buf)
3624 {
3625 struct iwl_priv *priv = dev_get_drvdata(d);
3626 return sprintf(buf, "%d\n", priv->tx_power_user_lmt);
3627 }
3628
3629 static ssize_t store_tx_power(struct device *d,
3630 struct device_attribute *attr,
3631 const char *buf, size_t count)
3632 {
3633 struct iwl_priv *priv = dev_get_drvdata(d);
3634 char *p = (char *)buf;
3635 u32 val;
3636
3637 val = simple_strtoul(p, &p, 10);
3638 if (p == buf)
3639 IWL_INFO(priv, ": %s is not in decimal form.\n", buf);
3640 else
3641 iwl3945_hw_reg_set_txpower(priv, val);
3642
3643 return count;
3644 }
3645
3646 static DEVICE_ATTR(tx_power, S_IWUSR | S_IRUGO, show_tx_power, store_tx_power);
3647
3648 static ssize_t show_flags(struct device *d,
3649 struct device_attribute *attr, char *buf)
3650 {
3651 struct iwl_priv *priv = dev_get_drvdata(d);
3652
3653 return sprintf(buf, "0x%04X\n", priv->active_rxon.flags);
3654 }
3655
3656 static ssize_t store_flags(struct device *d,
3657 struct device_attribute *attr,
3658 const char *buf, size_t count)
3659 {
3660 struct iwl_priv *priv = dev_get_drvdata(d);
3661 u32 flags = simple_strtoul(buf, NULL, 0);
3662
3663 mutex_lock(&priv->mutex);
3664 if (le32_to_cpu(priv->staging_rxon.flags) != flags) {
3665 /* Cancel any currently running scans... */
3666 if (iwl_scan_cancel_timeout(priv, 100))
3667 IWL_WARN(priv, "Could not cancel scan.\n");
3668 else {
3669 IWL_DEBUG_INFO(priv, "Committing rxon.flags = 0x%04X\n",
3670 flags);
3671 priv->staging_rxon.flags = cpu_to_le32(flags);
3672 iwlcore_commit_rxon(priv);
3673 }
3674 }
3675 mutex_unlock(&priv->mutex);
3676
3677 return count;
3678 }
3679
3680 static DEVICE_ATTR(flags, S_IWUSR | S_IRUGO, show_flags, store_flags);
3681
3682 static ssize_t show_filter_flags(struct device *d,
3683 struct device_attribute *attr, char *buf)
3684 {
3685 struct iwl_priv *priv = dev_get_drvdata(d);
3686
3687 return sprintf(buf, "0x%04X\n",
3688 le32_to_cpu(priv->active_rxon.filter_flags));
3689 }
3690
3691 static ssize_t store_filter_flags(struct device *d,
3692 struct device_attribute *attr,
3693 const char *buf, size_t count)
3694 {
3695 struct iwl_priv *priv = dev_get_drvdata(d);
3696 u32 filter_flags = simple_strtoul(buf, NULL, 0);
3697
3698 mutex_lock(&priv->mutex);
3699 if (le32_to_cpu(priv->staging_rxon.filter_flags) != filter_flags) {
3700 /* Cancel any currently running scans... */
3701 if (iwl_scan_cancel_timeout(priv, 100))
3702 IWL_WARN(priv, "Could not cancel scan.\n");
3703 else {
3704 IWL_DEBUG_INFO(priv, "Committing rxon.filter_flags = "
3705 "0x%04X\n", filter_flags);
3706 priv->staging_rxon.filter_flags =
3707 cpu_to_le32(filter_flags);
3708 iwlcore_commit_rxon(priv);
3709 }
3710 }
3711 mutex_unlock(&priv->mutex);
3712
3713 return count;
3714 }
3715
3716 static DEVICE_ATTR(filter_flags, S_IWUSR | S_IRUGO, show_filter_flags,
3717 store_filter_flags);
3718
3719 #ifdef CONFIG_IWL3945_SPECTRUM_MEASUREMENT
3720
3721 static ssize_t show_measurement(struct device *d,
3722 struct device_attribute *attr, char *buf)
3723 {
3724 struct iwl_priv *priv = dev_get_drvdata(d);
3725 struct iwl_spectrum_notification measure_report;
3726 u32 size = sizeof(measure_report), len = 0, ofs = 0;
3727 u8 *data = (u8 *)&measure_report;
3728 unsigned long flags;
3729
3730 spin_lock_irqsave(&priv->lock, flags);
3731 if (!(priv->measurement_status & MEASUREMENT_READY)) {
3732 spin_unlock_irqrestore(&priv->lock, flags);
3733 return 0;
3734 }
3735 memcpy(&measure_report, &priv->measure_report, size);
3736 priv->measurement_status = 0;
3737 spin_unlock_irqrestore(&priv->lock, flags);
3738
3739 while (size && (PAGE_SIZE - len)) {
3740 hex_dump_to_buffer(data + ofs, size, 16, 1, buf + len,
3741 PAGE_SIZE - len, 1);
3742 len = strlen(buf);
3743 if (PAGE_SIZE - len)
3744 buf[len++] = '\n';
3745
3746 ofs += 16;
3747 size -= min(size, 16U);
3748 }
3749
3750 return len;
3751 }
3752
3753 static ssize_t store_measurement(struct device *d,
3754 struct device_attribute *attr,
3755 const char *buf, size_t count)
3756 {
3757 struct iwl_priv *priv = dev_get_drvdata(d);
3758 struct ieee80211_measurement_params params = {
3759 .channel = le16_to_cpu(priv->active_rxon.channel),
3760 .start_time = cpu_to_le64(priv->last_tsf),
3761 .duration = cpu_to_le16(1),
3762 };
3763 u8 type = IWL_MEASURE_BASIC;
3764 u8 buffer[32];
3765 u8 channel;
3766
3767 if (count) {
3768 char *p = buffer;
3769 strncpy(buffer, buf, min(sizeof(buffer), count));
3770 channel = simple_strtoul(p, NULL, 0);
3771 if (channel)
3772 params.channel = channel;
3773
3774 p = buffer;
3775 while (*p && *p != ' ')
3776 p++;
3777 if (*p)
3778 type = simple_strtoul(p + 1, NULL, 0);
3779 }
3780
3781 IWL_DEBUG_INFO(priv, "Invoking measurement of type %d on "
3782 "channel %d (for '%s')\n", type, params.channel, buf);
3783 iwl3945_get_measurement(priv, &params, type);
3784
3785 return count;
3786 }
3787
3788 static DEVICE_ATTR(measurement, S_IRUSR | S_IWUSR,
3789 show_measurement, store_measurement);
3790 #endif /* CONFIG_IWL3945_SPECTRUM_MEASUREMENT */
3791
3792 static ssize_t store_retry_rate(struct device *d,
3793 struct device_attribute *attr,
3794 const char *buf, size_t count)
3795 {
3796 struct iwl_priv *priv = dev_get_drvdata(d);
3797
3798 priv->retry_rate = simple_strtoul(buf, NULL, 0);
3799 if (priv->retry_rate <= 0)
3800 priv->retry_rate = 1;
3801
3802 return count;
3803 }
3804
3805 static ssize_t show_retry_rate(struct device *d,
3806 struct device_attribute *attr, char *buf)
3807 {
3808 struct iwl_priv *priv = dev_get_drvdata(d);
3809 return sprintf(buf, "%d", priv->retry_rate);
3810 }
3811
3812 static DEVICE_ATTR(retry_rate, S_IWUSR | S_IRUSR, show_retry_rate,
3813 store_retry_rate);
3814
3815
3816 static ssize_t store_power_level(struct device *d,
3817 struct device_attribute *attr,
3818 const char *buf, size_t count)
3819 {
3820 struct iwl_priv *priv = dev_get_drvdata(d);
3821 int ret;
3822 unsigned long mode;
3823
3824
3825 mutex_lock(&priv->mutex);
3826
3827 ret = strict_strtoul(buf, 10, &mode);
3828 if (ret)
3829 goto out;
3830
3831 ret = iwl_power_set_user_mode(priv, mode);
3832 if (ret) {
3833 IWL_DEBUG_MAC80211(priv, "failed setting power mode.\n");
3834 goto out;
3835 }
3836 ret = count;
3837
3838 out:
3839 mutex_unlock(&priv->mutex);
3840 return ret;
3841 }
3842
3843 static ssize_t show_power_level(struct device *d,
3844 struct device_attribute *attr, char *buf)
3845 {
3846 struct iwl_priv *priv = dev_get_drvdata(d);
3847 int mode = priv->power_data.user_power_setting;
3848 int system = priv->power_data.system_power_setting;
3849 int level = priv->power_data.power_mode;
3850 char *p = buf;
3851
3852 switch (system) {
3853 case IWL_POWER_SYS_AUTO:
3854 p += sprintf(p, "SYSTEM:auto");
3855 break;
3856 case IWL_POWER_SYS_AC:
3857 p += sprintf(p, "SYSTEM:ac");
3858 break;
3859 case IWL_POWER_SYS_BATTERY:
3860 p += sprintf(p, "SYSTEM:battery");
3861 break;
3862 }
3863
3864 p += sprintf(p, "\tMODE:%s", (mode < IWL_POWER_AUTO) ?
3865 "fixed" : "auto");
3866 p += sprintf(p, "\tINDEX:%d", level);
3867 p += sprintf(p, "\n");
3868 return p - buf + 1;
3869 }
3870
3871 static DEVICE_ATTR(power_level, S_IWUSR | S_IRUSR,
3872 show_power_level, store_power_level);
3873
3874 #define MAX_WX_STRING 80
3875
3876 /* Values are in microsecond */
3877 static const s32 timeout_duration[] = {
3878 350000,
3879 250000,
3880 75000,
3881 37000,
3882 25000,
3883 };
3884 static const s32 period_duration[] = {
3885 400000,
3886 700000,
3887 1000000,
3888 1000000,
3889 1000000
3890 };
3891
3892 static ssize_t show_channels(struct device *d,
3893 struct device_attribute *attr, char *buf)
3894 {
3895 /* all this shit doesn't belong into sysfs anyway */
3896 return 0;
3897 }
3898
3899 static DEVICE_ATTR(channels, S_IRUSR, show_channels, NULL);
3900
3901 static ssize_t show_statistics(struct device *d,
3902 struct device_attribute *attr, char *buf)
3903 {
3904 struct iwl_priv *priv = dev_get_drvdata(d);
3905 u32 size = sizeof(struct iwl3945_notif_statistics);
3906 u32 len = 0, ofs = 0;
3907 u8 *data = (u8 *)&priv->statistics_39;
3908 int rc = 0;
3909
3910 if (!iwl_is_alive(priv))
3911 return -EAGAIN;
3912
3913 mutex_lock(&priv->mutex);
3914 rc = iwl_send_statistics_request(priv, 0);
3915 mutex_unlock(&priv->mutex);
3916
3917 if (rc) {
3918 len = sprintf(buf,
3919 "Error sending statistics request: 0x%08X\n", rc);
3920 return len;
3921 }
3922
3923 while (size && (PAGE_SIZE - len)) {
3924 hex_dump_to_buffer(data + ofs, size, 16, 1, buf + len,
3925 PAGE_SIZE - len, 1);
3926 len = strlen(buf);
3927 if (PAGE_SIZE - len)
3928 buf[len++] = '\n';
3929
3930 ofs += 16;
3931 size -= min(size, 16U);
3932 }
3933
3934 return len;
3935 }
3936
3937 static DEVICE_ATTR(statistics, S_IRUGO, show_statistics, NULL);
3938
3939 static ssize_t show_antenna(struct device *d,
3940 struct device_attribute *attr, char *buf)
3941 {
3942 struct iwl_priv *priv = dev_get_drvdata(d);
3943
3944 if (!iwl_is_alive(priv))
3945 return -EAGAIN;
3946
3947 return sprintf(buf, "%d\n", iwl3945_mod_params.antenna);
3948 }
3949
3950 static ssize_t store_antenna(struct device *d,
3951 struct device_attribute *attr,
3952 const char *buf, size_t count)
3953 {
3954 struct iwl_priv *priv __maybe_unused = dev_get_drvdata(d);
3955 int ant;
3956
3957 if (count == 0)
3958 return 0;
3959
3960 if (sscanf(buf, "%1i", &ant) != 1) {
3961 IWL_DEBUG_INFO(priv, "not in hex or decimal form.\n");
3962 return count;
3963 }
3964
3965 if ((ant >= 0) && (ant <= 2)) {
3966 IWL_DEBUG_INFO(priv, "Setting antenna select to %d.\n", ant);
3967 iwl3945_mod_params.antenna = (enum iwl3945_antenna)ant;
3968 } else
3969 IWL_DEBUG_INFO(priv, "Bad antenna select value %d.\n", ant);
3970
3971
3972 return count;
3973 }
3974
3975 static DEVICE_ATTR(antenna, S_IWUSR | S_IRUGO, show_antenna, store_antenna);
3976
3977 static ssize_t show_status(struct device *d,
3978 struct device_attribute *attr, char *buf)
3979 {
3980 struct iwl_priv *priv = dev_get_drvdata(d);
3981 if (!iwl_is_alive(priv))
3982 return -EAGAIN;
3983 return sprintf(buf, "0x%08x\n", (int)priv->status);
3984 }
3985
3986 static DEVICE_ATTR(status, S_IRUGO, show_status, NULL);
3987
3988 static ssize_t dump_error_log(struct device *d,
3989 struct device_attribute *attr,
3990 const char *buf, size_t count)
3991 {
3992 struct iwl_priv *priv = dev_get_drvdata(d);
3993 char *p = (char *)buf;
3994
3995 if (p[0] == '1')
3996 iwl3945_dump_nic_error_log(priv);
3997
3998 return strnlen(buf, count);
3999 }
4000
4001 static DEVICE_ATTR(dump_errors, S_IWUSR, NULL, dump_error_log);
4002
4003 static ssize_t dump_event_log(struct device *d,
4004 struct device_attribute *attr,
4005 const char *buf, size_t count)
4006 {
4007 struct iwl_priv *priv = dev_get_drvdata(d);
4008 char *p = (char *)buf;
4009
4010 if (p[0] == '1')
4011 iwl3945_dump_nic_event_log(priv);
4012
4013 return strnlen(buf, count);
4014 }
4015
4016 static DEVICE_ATTR(dump_events, S_IWUSR, NULL, dump_event_log);
4017
4018 /*****************************************************************************
4019 *
4020 * driver setup and tear down
4021 *
4022 *****************************************************************************/
4023
4024 static void iwl3945_setup_deferred_work(struct iwl_priv *priv)
4025 {
4026 priv->workqueue = create_singlethread_workqueue(DRV_NAME);
4027
4028 init_waitqueue_head(&priv->wait_command_queue);
4029
4030 INIT_WORK(&priv->up, iwl3945_bg_up);
4031 INIT_WORK(&priv->restart, iwl3945_bg_restart);
4032 INIT_WORK(&priv->rx_replenish, iwl3945_bg_rx_replenish);
4033 INIT_WORK(&priv->rf_kill, iwl_bg_rf_kill);
4034 INIT_WORK(&priv->beacon_update, iwl3945_bg_beacon_update);
4035 INIT_DELAYED_WORK(&priv->init_alive_start, iwl3945_bg_init_alive_start);
4036 INIT_DELAYED_WORK(&priv->alive_start, iwl3945_bg_alive_start);
4037 INIT_DELAYED_WORK(&priv->rfkill_poll, iwl3945_rfkill_poll);
4038 INIT_WORK(&priv->scan_completed, iwl_bg_scan_completed);
4039 INIT_WORK(&priv->request_scan, iwl3945_bg_request_scan);
4040 INIT_WORK(&priv->abort_scan, iwl_bg_abort_scan);
4041 INIT_DELAYED_WORK(&priv->scan_check, iwl_bg_scan_check);
4042
4043 iwl3945_hw_setup_deferred_work(priv);
4044
4045 tasklet_init(&priv->irq_tasklet, (void (*)(unsigned long))
4046 iwl3945_irq_tasklet, (unsigned long)priv);
4047 }
4048
4049 static void iwl3945_cancel_deferred_work(struct iwl_priv *priv)
4050 {
4051 iwl3945_hw_cancel_deferred_work(priv);
4052
4053 cancel_delayed_work_sync(&priv->init_alive_start);
4054 cancel_delayed_work(&priv->scan_check);
4055 cancel_delayed_work(&priv->alive_start);
4056 cancel_work_sync(&priv->beacon_update);
4057 }
4058
4059 static struct attribute *iwl3945_sysfs_entries[] = {
4060 &dev_attr_antenna.attr,
4061 &dev_attr_channels.attr,
4062 &dev_attr_dump_errors.attr,
4063 &dev_attr_dump_events.attr,
4064 &dev_attr_flags.attr,
4065 &dev_attr_filter_flags.attr,
4066 #ifdef CONFIG_IWL3945_SPECTRUM_MEASUREMENT
4067 &dev_attr_measurement.attr,
4068 #endif
4069 &dev_attr_power_level.attr,
4070 &dev_attr_retry_rate.attr,
4071 &dev_attr_statistics.attr,
4072 &dev_attr_status.attr,
4073 &dev_attr_temperature.attr,
4074 &dev_attr_tx_power.attr,
4075 #ifdef CONFIG_IWLWIFI_DEBUG
4076 &dev_attr_debug_level.attr,
4077 #endif
4078 NULL
4079 };
4080
4081 static struct attribute_group iwl3945_attribute_group = {
4082 .name = NULL, /* put in device directory */
4083 .attrs = iwl3945_sysfs_entries,
4084 };
4085
4086 static struct ieee80211_ops iwl3945_hw_ops = {
4087 .tx = iwl3945_mac_tx,
4088 .start = iwl3945_mac_start,
4089 .stop = iwl3945_mac_stop,
4090 .add_interface = iwl_mac_add_interface,
4091 .remove_interface = iwl_mac_remove_interface,
4092 .config = iwl_mac_config,
4093 .configure_filter = iwl_configure_filter,
4094 .set_key = iwl3945_mac_set_key,
4095 .get_tx_stats = iwl_mac_get_tx_stats,
4096 .conf_tx = iwl_mac_conf_tx,
4097 .reset_tsf = iwl_mac_reset_tsf,
4098 .bss_info_changed = iwl_bss_info_changed,
4099 .hw_scan = iwl_mac_hw_scan
4100 };
4101
4102 static int iwl3945_init_drv(struct iwl_priv *priv)
4103 {
4104 int ret;
4105 struct iwl3945_eeprom *eeprom = (struct iwl3945_eeprom *)priv->eeprom;
4106
4107 priv->retry_rate = 1;
4108 priv->ibss_beacon = NULL;
4109
4110 spin_lock_init(&priv->lock);
4111 spin_lock_init(&priv->power_data.lock);
4112 spin_lock_init(&priv->sta_lock);
4113 spin_lock_init(&priv->hcmd_lock);
4114
4115 INIT_LIST_HEAD(&priv->free_frames);
4116
4117 mutex_init(&priv->mutex);
4118
4119 /* Clear the driver's (not device's) station table */
4120 priv->cfg->ops->smgmt->clear_station_table(priv);
4121
4122 priv->data_retry_limit = -1;
4123 priv->ieee_channels = NULL;
4124 priv->ieee_rates = NULL;
4125 priv->band = IEEE80211_BAND_2GHZ;
4126
4127 priv->iw_mode = NL80211_IFTYPE_STATION;
4128
4129 iwl_reset_qos(priv);
4130
4131 priv->qos_data.qos_active = 0;
4132 priv->qos_data.qos_cap.val = 0;
4133
4134 priv->rates_mask = IWL_RATES_MASK;
4135 /* If power management is turned on, default to CAM mode */
4136 priv->power_mode = IWL_POWER_MODE_CAM;
4137 priv->tx_power_user_lmt = IWL_DEFAULT_TX_POWER;
4138
4139 if (eeprom->version < EEPROM_3945_EEPROM_VERSION) {
4140 IWL_WARN(priv, "Unsupported EEPROM version: 0x%04X\n",
4141 eeprom->version);
4142 ret = -EINVAL;
4143 goto err;
4144 }
4145 ret = iwl_init_channel_map(priv);
4146 if (ret) {
4147 IWL_ERR(priv, "initializing regulatory failed: %d\n", ret);
4148 goto err;
4149 }
4150
4151 /* Set up txpower settings in driver for all channels */
4152 if (iwl3945_txpower_set_from_eeprom(priv)) {
4153 ret = -EIO;
4154 goto err_free_channel_map;
4155 }
4156
4157 ret = iwlcore_init_geos(priv);
4158 if (ret) {
4159 IWL_ERR(priv, "initializing geos failed: %d\n", ret);
4160 goto err_free_channel_map;
4161 }
4162 iwl3945_init_hw_rates(priv, priv->ieee_rates);
4163
4164 return 0;
4165
4166 err_free_channel_map:
4167 iwl_free_channel_map(priv);
4168 err:
4169 return ret;
4170 }
4171
4172 static int iwl3945_setup_mac(struct iwl_priv *priv)
4173 {
4174 int ret;
4175 struct ieee80211_hw *hw = priv->hw;
4176
4177 hw->rate_control_algorithm = "iwl-3945-rs";
4178 hw->sta_data_size = sizeof(struct iwl3945_sta_priv);
4179
4180 /* Tell mac80211 our characteristics */
4181 hw->flags = IEEE80211_HW_SIGNAL_DBM |
4182 IEEE80211_HW_NOISE_DBM |
4183 IEEE80211_HW_SPECTRUM_MGMT;
4184
4185 hw->wiphy->interface_modes =
4186 BIT(NL80211_IFTYPE_STATION) |
4187 BIT(NL80211_IFTYPE_ADHOC);
4188
4189 hw->wiphy->custom_regulatory = true;
4190
4191 hw->wiphy->max_scan_ssids = PROBE_OPTION_MAX_3945;
4192 /* we create the 802.11 header and a zero-length SSID element */
4193 hw->wiphy->max_scan_ie_len = IWL_MAX_PROBE_REQUEST - 24 - 2;
4194
4195 /* Default value; 4 EDCA QOS priorities */
4196 hw->queues = 4;
4197
4198 if (priv->bands[IEEE80211_BAND_2GHZ].n_channels)
4199 priv->hw->wiphy->bands[IEEE80211_BAND_2GHZ] =
4200 &priv->bands[IEEE80211_BAND_2GHZ];
4201
4202 if (priv->bands[IEEE80211_BAND_5GHZ].n_channels)
4203 priv->hw->wiphy->bands[IEEE80211_BAND_5GHZ] =
4204 &priv->bands[IEEE80211_BAND_5GHZ];
4205
4206 ret = ieee80211_register_hw(priv->hw);
4207 if (ret) {
4208 IWL_ERR(priv, "Failed to register hw (error %d)\n", ret);
4209 return ret;
4210 }
4211 priv->mac80211_registered = 1;
4212
4213 return 0;
4214 }
4215
4216 static int iwl3945_pci_probe(struct pci_dev *pdev, const struct pci_device_id *ent)
4217 {
4218 int err = 0;
4219 struct iwl_priv *priv;
4220 struct ieee80211_hw *hw;
4221 struct iwl_cfg *cfg = (struct iwl_cfg *)(ent->driver_data);
4222 struct iwl3945_eeprom *eeprom;
4223 unsigned long flags;
4224
4225 /***********************
4226 * 1. Allocating HW data
4227 * ********************/
4228
4229 /* mac80211 allocates memory for this device instance, including
4230 * space for this driver's private structure */
4231 hw = iwl_alloc_all(cfg, &iwl3945_hw_ops);
4232 if (hw == NULL) {
4233 printk(KERN_ERR DRV_NAME "Can not allocate network device\n");
4234 err = -ENOMEM;
4235 goto out;
4236 }
4237 priv = hw->priv;
4238 SET_IEEE80211_DEV(hw, &pdev->dev);
4239
4240 if ((iwl3945_mod_params.num_of_queues > IWL39_MAX_NUM_QUEUES) ||
4241 (iwl3945_mod_params.num_of_queues < IWL_MIN_NUM_QUEUES)) {
4242 IWL_ERR(priv,
4243 "invalid queues_num, should be between %d and %d\n",
4244 IWL_MIN_NUM_QUEUES, IWL39_MAX_NUM_QUEUES);
4245 err = -EINVAL;
4246 goto out_ieee80211_free_hw;
4247 }
4248
4249 /*
4250 * Disabling hardware scan means that mac80211 will perform scans
4251 * "the hard way", rather than using device's scan.
4252 */
4253 if (iwl3945_mod_params.disable_hw_scan) {
4254 IWL_DEBUG_INFO(priv, "Disabling hw_scan\n");
4255 iwl3945_hw_ops.hw_scan = NULL;
4256 }
4257
4258
4259 IWL_DEBUG_INFO(priv, "*** LOAD DRIVER ***\n");
4260 priv->cfg = cfg;
4261 priv->pci_dev = pdev;
4262
4263 #ifdef CONFIG_IWLWIFI_DEBUG
4264 priv->debug_level = iwl3945_mod_params.debug;
4265 atomic_set(&priv->restrict_refcnt, 0);
4266 #endif
4267
4268 /***************************
4269 * 2. Initializing PCI bus
4270 * *************************/
4271 if (pci_enable_device(pdev)) {
4272 err = -ENODEV;
4273 goto out_ieee80211_free_hw;
4274 }
4275
4276 pci_set_master(pdev);
4277
4278 err = pci_set_dma_mask(pdev, DMA_BIT_MASK(32));
4279 if (!err)
4280 err = pci_set_consistent_dma_mask(pdev, DMA_BIT_MASK(32));
4281 if (err) {
4282 IWL_WARN(priv, "No suitable DMA available.\n");
4283 goto out_pci_disable_device;
4284 }
4285
4286 pci_set_drvdata(pdev, priv);
4287 err = pci_request_regions(pdev, DRV_NAME);
4288 if (err)
4289 goto out_pci_disable_device;
4290
4291 /***********************
4292 * 3. Read REV Register
4293 * ********************/
4294 priv->hw_base = pci_iomap(pdev, 0, 0);
4295 if (!priv->hw_base) {
4296 err = -ENODEV;
4297 goto out_pci_release_regions;
4298 }
4299
4300 IWL_DEBUG_INFO(priv, "pci_resource_len = 0x%08llx\n",
4301 (unsigned long long) pci_resource_len(pdev, 0));
4302 IWL_DEBUG_INFO(priv, "pci_resource_base = %p\n", priv->hw_base);
4303
4304 /* We disable the RETRY_TIMEOUT register (0x41) to keep
4305 * PCI Tx retries from interfering with C3 CPU state */
4306 pci_write_config_byte(pdev, 0x41, 0x00);
4307
4308 /* amp init */
4309 err = priv->cfg->ops->lib->apm_ops.init(priv);
4310 if (err < 0) {
4311 IWL_DEBUG_INFO(priv, "Failed to init the card\n");
4312 goto out_iounmap;
4313 }
4314
4315 /***********************
4316 * 4. Read EEPROM
4317 * ********************/
4318
4319 /* Read the EEPROM */
4320 err = iwl_eeprom_init(priv);
4321 if (err) {
4322 IWL_ERR(priv, "Unable to init EEPROM\n");
4323 goto out_iounmap;
4324 }
4325 /* MAC Address location in EEPROM same for 3945/4965 */
4326 eeprom = (struct iwl3945_eeprom *)priv->eeprom;
4327 memcpy(priv->mac_addr, eeprom->mac_address, ETH_ALEN);
4328 IWL_DEBUG_INFO(priv, "MAC address: %pM\n", priv->mac_addr);
4329 SET_IEEE80211_PERM_ADDR(priv->hw, priv->mac_addr);
4330
4331 /***********************
4332 * 5. Setup HW Constants
4333 * ********************/
4334 /* Device-specific setup */
4335 if (iwl3945_hw_set_hw_params(priv)) {
4336 IWL_ERR(priv, "failed to set hw settings\n");
4337 goto out_eeprom_free;
4338 }
4339
4340 /***********************
4341 * 6. Setup priv
4342 * ********************/
4343
4344 err = iwl3945_init_drv(priv);
4345 if (err) {
4346 IWL_ERR(priv, "initializing driver failed\n");
4347 goto out_unset_hw_params;
4348 }
4349
4350 IWL_INFO(priv, "Detected Intel Wireless WiFi Link %s\n",
4351 priv->cfg->name);
4352
4353 /***********************
4354 * 7. Setup Services
4355 * ********************/
4356
4357 spin_lock_irqsave(&priv->lock, flags);
4358 iwl_disable_interrupts(priv);
4359 spin_unlock_irqrestore(&priv->lock, flags);
4360
4361 pci_enable_msi(priv->pci_dev);
4362
4363 err = request_irq(priv->pci_dev->irq, iwl_isr, IRQF_SHARED,
4364 DRV_NAME, priv);
4365 if (err) {
4366 IWL_ERR(priv, "Error allocating IRQ %d\n", priv->pci_dev->irq);
4367 goto out_disable_msi;
4368 }
4369
4370 err = sysfs_create_group(&pdev->dev.kobj, &iwl3945_attribute_group);
4371 if (err) {
4372 IWL_ERR(priv, "failed to create sysfs device attributes\n");
4373 goto out_release_irq;
4374 }
4375
4376 iwl_set_rxon_channel(priv,
4377 &priv->bands[IEEE80211_BAND_2GHZ].channels[5]);
4378 iwl3945_setup_deferred_work(priv);
4379 iwl3945_setup_rx_handlers(priv);
4380
4381 /*********************************
4382 * 8. Setup and Register mac80211
4383 * *******************************/
4384
4385 iwl_enable_interrupts(priv);
4386
4387 err = iwl3945_setup_mac(priv);
4388 if (err)
4389 goto out_remove_sysfs;
4390
4391 err = iwl_dbgfs_register(priv, DRV_NAME);
4392 if (err)
4393 IWL_ERR(priv, "failed to create debugfs files. Ignoring error: %d\n", err);
4394
4395 err = iwl_rfkill_init(priv);
4396 if (err)
4397 IWL_ERR(priv, "Unable to initialize RFKILL system. "
4398 "Ignoring error: %d\n", err);
4399 else
4400 iwl_rfkill_set_hw_state(priv);
4401
4402 /* Start monitoring the killswitch */
4403 queue_delayed_work(priv->workqueue, &priv->rfkill_poll,
4404 2 * HZ);
4405
4406 return 0;
4407
4408 out_remove_sysfs:
4409 destroy_workqueue(priv->workqueue);
4410 priv->workqueue = NULL;
4411 sysfs_remove_group(&pdev->dev.kobj, &iwl3945_attribute_group);
4412 out_release_irq:
4413 free_irq(priv->pci_dev->irq, priv);
4414 out_disable_msi:
4415 pci_disable_msi(priv->pci_dev);
4416 iwlcore_free_geos(priv);
4417 iwl_free_channel_map(priv);
4418 out_unset_hw_params:
4419 iwl3945_unset_hw_params(priv);
4420 out_eeprom_free:
4421 iwl_eeprom_free(priv);
4422 out_iounmap:
4423 pci_iounmap(pdev, priv->hw_base);
4424 out_pci_release_regions:
4425 pci_release_regions(pdev);
4426 out_pci_disable_device:
4427 pci_set_drvdata(pdev, NULL);
4428 pci_disable_device(pdev);
4429 out_ieee80211_free_hw:
4430 ieee80211_free_hw(priv->hw);
4431 out:
4432 return err;
4433 }
4434
4435 static void __devexit iwl3945_pci_remove(struct pci_dev *pdev)
4436 {
4437 struct iwl_priv *priv = pci_get_drvdata(pdev);
4438 unsigned long flags;
4439
4440 if (!priv)
4441 return;
4442
4443 IWL_DEBUG_INFO(priv, "*** UNLOAD DRIVER ***\n");
4444
4445 iwl_dbgfs_unregister(priv);
4446
4447 set_bit(STATUS_EXIT_PENDING, &priv->status);
4448
4449 if (priv->mac80211_registered) {
4450 ieee80211_unregister_hw(priv->hw);
4451 priv->mac80211_registered = 0;
4452 } else {
4453 iwl3945_down(priv);
4454 }
4455
4456 /* make sure we flush any pending irq or
4457 * tasklet for the driver
4458 */
4459 spin_lock_irqsave(&priv->lock, flags);
4460 iwl_disable_interrupts(priv);
4461 spin_unlock_irqrestore(&priv->lock, flags);
4462
4463 iwl_synchronize_irq(priv);
4464
4465 sysfs_remove_group(&pdev->dev.kobj, &iwl3945_attribute_group);
4466
4467 iwl_rfkill_unregister(priv);
4468 cancel_delayed_work_sync(&priv->rfkill_poll);
4469
4470 iwl3945_dealloc_ucode_pci(priv);
4471
4472 if (priv->rxq.bd)
4473 iwl3945_rx_queue_free(priv, &priv->rxq);
4474 iwl3945_hw_txq_ctx_free(priv);
4475
4476 iwl3945_unset_hw_params(priv);
4477 priv->cfg->ops->smgmt->clear_station_table(priv);
4478
4479 /*netif_stop_queue(dev); */
4480 flush_workqueue(priv->workqueue);
4481
4482 /* ieee80211_unregister_hw calls iwl3945_mac_stop, which flushes
4483 * priv->workqueue... so we can't take down the workqueue
4484 * until now... */
4485 destroy_workqueue(priv->workqueue);
4486 priv->workqueue = NULL;
4487
4488 free_irq(pdev->irq, priv);
4489 pci_disable_msi(pdev);
4490
4491 pci_iounmap(pdev, priv->hw_base);
4492 pci_release_regions(pdev);
4493 pci_disable_device(pdev);
4494 pci_set_drvdata(pdev, NULL);
4495
4496 iwl_free_channel_map(priv);
4497 iwlcore_free_geos(priv);
4498 kfree(priv->scan);
4499 if (priv->ibss_beacon)
4500 dev_kfree_skb(priv->ibss_beacon);
4501
4502 ieee80211_free_hw(priv->hw);
4503 }
4504
4505
4506 /*****************************************************************************
4507 *
4508 * driver and module entry point
4509 *
4510 *****************************************************************************/
4511
4512 static struct pci_driver iwl3945_driver = {
4513 .name = DRV_NAME,
4514 .id_table = iwl3945_hw_card_ids,
4515 .probe = iwl3945_pci_probe,
4516 .remove = __devexit_p(iwl3945_pci_remove),
4517 #ifdef CONFIG_PM
4518 .suspend = iwl_pci_suspend,
4519 .resume = iwl_pci_resume,
4520 #endif
4521 };
4522
4523 static int __init iwl3945_init(void)
4524 {
4525
4526 int ret;
4527 printk(KERN_INFO DRV_NAME ": " DRV_DESCRIPTION ", " DRV_VERSION "\n");
4528 printk(KERN_INFO DRV_NAME ": " DRV_COPYRIGHT "\n");
4529
4530 ret = iwl3945_rate_control_register();
4531 if (ret) {
4532 printk(KERN_ERR DRV_NAME
4533 "Unable to register rate control algorithm: %d\n", ret);
4534 return ret;
4535 }
4536
4537 ret = pci_register_driver(&iwl3945_driver);
4538 if (ret) {
4539 printk(KERN_ERR DRV_NAME "Unable to initialize PCI module\n");
4540 goto error_register;
4541 }
4542
4543 return ret;
4544
4545 error_register:
4546 iwl3945_rate_control_unregister();
4547 return ret;
4548 }
4549
4550 static void __exit iwl3945_exit(void)
4551 {
4552 pci_unregister_driver(&iwl3945_driver);
4553 iwl3945_rate_control_unregister();
4554 }
4555
4556 MODULE_FIRMWARE(IWL3945_MODULE_FIRMWARE(IWL3945_UCODE_API_MAX));
4557
4558 module_param_named(antenna, iwl3945_mod_params.antenna, int, 0444);
4559 MODULE_PARM_DESC(antenna, "select antenna (1=Main, 2=Aux, default 0 [both])");
4560 module_param_named(swcrypto, iwl3945_mod_params.sw_crypto, int, 0444);
4561 MODULE_PARM_DESC(swcrypto,
4562 "using software crypto (default 1 [software])\n");
4563 module_param_named(debug, iwl3945_mod_params.debug, uint, 0444);
4564 MODULE_PARM_DESC(debug, "debug output mask");
4565 module_param_named(disable_hw_scan, iwl3945_mod_params.disable_hw_scan, int, 0444);
4566 MODULE_PARM_DESC(disable_hw_scan, "disable hardware scanning (default 0)");
4567
4568 module_param_named(queues_num, iwl3945_mod_params.num_of_queues, int, 0444);
4569 MODULE_PARM_DESC(queues_num, "number of hw queues.");
4570
4571 module_param_named(fw_restart3945, iwl3945_mod_params.restart_fw, int, 0444);
4572 MODULE_PARM_DESC(fw_restart3945, "restart firmware in case of error");
4573
4574 module_exit(iwl3945_exit);
4575 module_init(iwl3945_init);
Linux 2.6 ibm-acpi/thinkpad-acpi driver git tree