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Merge branch 'master' of master.kernel.org:/pub/scm/linux/kernel/git/davem/net-2.6
[deliverable/linux.git] / drivers / net / wireless / iwlwifi / iwl-agn.c
1 /******************************************************************************
2 *
3 * Copyright(c) 2003 - 2008 Intel Corporation. All rights reserved.
4 *
5 * Portions of this file are derived from the ipw3945 project, as well
6 * as portions of the ieee80211 subsystem header files.
7 *
8 * This program is free software; you can redistribute it and/or modify it
9 * under the terms of version 2 of the GNU General Public License as
10 * published by the Free Software Foundation.
11 *
12 * This program is distributed in the hope that it will be useful, but WITHOUT
13 * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
14 * FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License for
15 * more details.
16 *
17 * You should have received a copy of the GNU General Public License along with
18 * this program; if not, write to the Free Software Foundation, Inc.,
19 * 51 Franklin Street, Fifth Floor, Boston, MA 02110, USA
20 *
21 * The full GNU General Public License is included in this distribution in the
22 * file called LICENSE.
23 *
24 * Contact Information:
25 * James P. Ketrenos <ipw2100-admin@linux.intel.com>
26 * Intel Corporation, 5200 N.E. Elam Young Parkway, Hillsboro, OR 97124-6497
27 *
28 *****************************************************************************/
29
30 #include <linux/kernel.h>
31 #include <linux/module.h>
32 #include <linux/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/mac80211.h>
44
45 #include <asm/div64.h>
46
47 #include "iwl-eeprom.h"
48 #include "iwl-dev.h"
49 #include "iwl-core.h"
50 #include "iwl-io.h"
51 #include "iwl-helpers.h"
52 #include "iwl-sta.h"
53 #include "iwl-calib.h"
54
55
56 /******************************************************************************
57 *
58 * module boiler plate
59 *
60 ******************************************************************************/
61
62 /*
63 * module name, copyright, version, etc.
64 * NOTE: DRV_NAME is defined in iwlwifi.h for use by iwl-debug.h and printk
65 */
66
67 #define DRV_DESCRIPTION "Intel(R) Wireless WiFi Link AGN driver for Linux"
68
69 #ifdef CONFIG_IWLWIFI_DEBUG
70 #define VD "d"
71 #else
72 #define VD
73 #endif
74
75 #ifdef CONFIG_IWLAGN_SPECTRUM_MEASUREMENT
76 #define VS "s"
77 #else
78 #define VS
79 #endif
80
81 #define DRV_VERSION IWLWIFI_VERSION VD VS
82
83
84 MODULE_DESCRIPTION(DRV_DESCRIPTION);
85 MODULE_VERSION(DRV_VERSION);
86 MODULE_AUTHOR(DRV_COPYRIGHT);
87 MODULE_LICENSE("GPL");
88 MODULE_ALIAS("iwl4965");
89
90 /*************** STATION TABLE MANAGEMENT ****
91 * mac80211 should be examined to determine if sta_info is duplicating
92 * the functionality provided here
93 */
94
95 /**************************************************************/
96
97
98
99 static void iwl4965_set_rxon_hwcrypto(struct iwl_priv *priv, int hw_decrypt)
100 {
101 struct iwl_rxon_cmd *rxon = &priv->staging_rxon;
102
103 if (hw_decrypt)
104 rxon->filter_flags &= ~RXON_FILTER_DIS_DECRYPT_MSK;
105 else
106 rxon->filter_flags |= RXON_FILTER_DIS_DECRYPT_MSK;
107
108 }
109
110 /**
111 * iwl4965_check_rxon_cmd - validate RXON structure is valid
112 *
113 * NOTE: This is really only useful during development and can eventually
114 * be #ifdef'd out once the driver is stable and folks aren't actively
115 * making changes
116 */
117 static int iwl4965_check_rxon_cmd(struct iwl_rxon_cmd *rxon)
118 {
119 int error = 0;
120 int counter = 1;
121
122 if (rxon->flags & RXON_FLG_BAND_24G_MSK) {
123 error |= le32_to_cpu(rxon->flags &
124 (RXON_FLG_TGJ_NARROW_BAND_MSK |
125 RXON_FLG_RADAR_DETECT_MSK));
126 if (error)
127 IWL_WARNING("check 24G fields %d | %d\n",
128 counter++, error);
129 } else {
130 error |= (rxon->flags & RXON_FLG_SHORT_SLOT_MSK) ?
131 0 : le32_to_cpu(RXON_FLG_SHORT_SLOT_MSK);
132 if (error)
133 IWL_WARNING("check 52 fields %d | %d\n",
134 counter++, error);
135 error |= le32_to_cpu(rxon->flags & RXON_FLG_CCK_MSK);
136 if (error)
137 IWL_WARNING("check 52 CCK %d | %d\n",
138 counter++, error);
139 }
140 error |= (rxon->node_addr[0] | rxon->bssid_addr[0]) & 0x1;
141 if (error)
142 IWL_WARNING("check mac addr %d | %d\n", counter++, error);
143
144 /* make sure basic rates 6Mbps and 1Mbps are supported */
145 error |= (((rxon->ofdm_basic_rates & IWL_RATE_6M_MASK) == 0) &&
146 ((rxon->cck_basic_rates & IWL_RATE_1M_MASK) == 0));
147 if (error)
148 IWL_WARNING("check basic rate %d | %d\n", counter++, error);
149
150 error |= (le16_to_cpu(rxon->assoc_id) > 2007);
151 if (error)
152 IWL_WARNING("check assoc id %d | %d\n", counter++, error);
153
154 error |= ((rxon->flags & (RXON_FLG_CCK_MSK | RXON_FLG_SHORT_SLOT_MSK))
155 == (RXON_FLG_CCK_MSK | RXON_FLG_SHORT_SLOT_MSK));
156 if (error)
157 IWL_WARNING("check CCK and short slot %d | %d\n",
158 counter++, error);
159
160 error |= ((rxon->flags & (RXON_FLG_CCK_MSK | RXON_FLG_AUTO_DETECT_MSK))
161 == (RXON_FLG_CCK_MSK | RXON_FLG_AUTO_DETECT_MSK));
162 if (error)
163 IWL_WARNING("check CCK & auto detect %d | %d\n",
164 counter++, error);
165
166 error |= ((rxon->flags & (RXON_FLG_AUTO_DETECT_MSK |
167 RXON_FLG_TGG_PROTECT_MSK)) == RXON_FLG_TGG_PROTECT_MSK);
168 if (error)
169 IWL_WARNING("check TGG and auto detect %d | %d\n",
170 counter++, error);
171
172 if (error)
173 IWL_WARNING("Tuning to channel %d\n",
174 le16_to_cpu(rxon->channel));
175
176 if (error) {
177 IWL_ERROR("Not a valid iwl4965_rxon_assoc_cmd field values\n");
178 return -1;
179 }
180 return 0;
181 }
182
183 /**
184 * iwl_full_rxon_required - check if full RXON (vs RXON_ASSOC) cmd is needed
185 * @priv: staging_rxon is compared to active_rxon
186 *
187 * If the RXON structure is changing enough to require a new tune,
188 * or is clearing the RXON_FILTER_ASSOC_MSK, then return 1 to indicate that
189 * a new tune (full RXON command, rather than RXON_ASSOC cmd) is required.
190 */
191 static int iwl_full_rxon_required(struct iwl_priv *priv)
192 {
193
194 /* These items are only settable from the full RXON command */
195 if (!(iwl_is_associated(priv)) ||
196 compare_ether_addr(priv->staging_rxon.bssid_addr,
197 priv->active_rxon.bssid_addr) ||
198 compare_ether_addr(priv->staging_rxon.node_addr,
199 priv->active_rxon.node_addr) ||
200 compare_ether_addr(priv->staging_rxon.wlap_bssid_addr,
201 priv->active_rxon.wlap_bssid_addr) ||
202 (priv->staging_rxon.dev_type != priv->active_rxon.dev_type) ||
203 (priv->staging_rxon.channel != priv->active_rxon.channel) ||
204 (priv->staging_rxon.air_propagation !=
205 priv->active_rxon.air_propagation) ||
206 (priv->staging_rxon.ofdm_ht_single_stream_basic_rates !=
207 priv->active_rxon.ofdm_ht_single_stream_basic_rates) ||
208 (priv->staging_rxon.ofdm_ht_dual_stream_basic_rates !=
209 priv->active_rxon.ofdm_ht_dual_stream_basic_rates) ||
210 (priv->staging_rxon.assoc_id != priv->active_rxon.assoc_id))
211 return 1;
212
213 /* flags, filter_flags, ofdm_basic_rates, and cck_basic_rates can
214 * be updated with the RXON_ASSOC command -- however only some
215 * flag transitions are allowed using RXON_ASSOC */
216
217 /* Check if we are not switching bands */
218 if ((priv->staging_rxon.flags & RXON_FLG_BAND_24G_MSK) !=
219 (priv->active_rxon.flags & RXON_FLG_BAND_24G_MSK))
220 return 1;
221
222 /* Check if we are switching association toggle */
223 if ((priv->staging_rxon.filter_flags & RXON_FILTER_ASSOC_MSK) !=
224 (priv->active_rxon.filter_flags & RXON_FILTER_ASSOC_MSK))
225 return 1;
226
227 return 0;
228 }
229
230 /**
231 * iwl4965_commit_rxon - commit staging_rxon to hardware
232 *
233 * The RXON command in staging_rxon is committed to the hardware and
234 * the active_rxon structure is updated with the new data. This
235 * function correctly transitions out of the RXON_ASSOC_MSK state if
236 * a HW tune is required based on the RXON structure changes.
237 */
238 static int iwl4965_commit_rxon(struct iwl_priv *priv)
239 {
240 /* cast away the const for active_rxon in this function */
241 struct iwl_rxon_cmd *active_rxon = (void *)&priv->active_rxon;
242 int ret;
243 bool new_assoc =
244 !!(priv->staging_rxon.filter_flags & RXON_FILTER_ASSOC_MSK);
245
246 if (!iwl_is_alive(priv))
247 return -EBUSY;
248
249 /* always get timestamp with Rx frame */
250 priv->staging_rxon.flags |= RXON_FLG_TSF2HOST_MSK;
251 /* allow CTS-to-self if possible. this is relevant only for
252 * 5000, but will not damage 4965 */
253 priv->staging_rxon.flags |= RXON_FLG_SELF_CTS_EN;
254
255 ret = iwl4965_check_rxon_cmd(&priv->staging_rxon);
256 if (ret) {
257 IWL_ERROR("Invalid RXON configuration. Not committing.\n");
258 return -EINVAL;
259 }
260
261 /* If we don't need to send a full RXON, we can use
262 * iwl4965_rxon_assoc_cmd which is used to reconfigure filter
263 * and other flags for the current radio configuration. */
264 if (!iwl_full_rxon_required(priv)) {
265 ret = iwl_send_rxon_assoc(priv);
266 if (ret) {
267 IWL_ERROR("Error setting RXON_ASSOC (%d)\n", ret);
268 return ret;
269 }
270
271 memcpy(active_rxon, &priv->staging_rxon, sizeof(*active_rxon));
272 return 0;
273 }
274
275 /* station table will be cleared */
276 priv->assoc_station_added = 0;
277
278 /* If we are currently associated and the new config requires
279 * an RXON_ASSOC and the new config wants the associated mask enabled,
280 * we must clear the associated from the active configuration
281 * before we apply the new config */
282 if (iwl_is_associated(priv) && new_assoc) {
283 IWL_DEBUG_INFO("Toggling associated bit on current RXON\n");
284 active_rxon->filter_flags &= ~RXON_FILTER_ASSOC_MSK;
285
286 ret = iwl_send_cmd_pdu(priv, REPLY_RXON,
287 sizeof(struct iwl_rxon_cmd),
288 &priv->active_rxon);
289
290 /* If the mask clearing failed then we set
291 * active_rxon back to what it was previously */
292 if (ret) {
293 active_rxon->filter_flags |= RXON_FILTER_ASSOC_MSK;
294 IWL_ERROR("Error clearing ASSOC_MSK (%d)\n", ret);
295 return ret;
296 }
297 }
298
299 IWL_DEBUG_INFO("Sending RXON\n"
300 "* with%s RXON_FILTER_ASSOC_MSK\n"
301 "* channel = %d\n"
302 "* bssid = %pM\n",
303 (new_assoc ? "" : "out"),
304 le16_to_cpu(priv->staging_rxon.channel),
305 priv->staging_rxon.bssid_addr);
306
307 iwl4965_set_rxon_hwcrypto(priv, !priv->hw_params.sw_crypto);
308
309 /* Apply the new configuration
310 * RXON unassoc clears the station table in uCode, send it before
311 * we add the bcast station. If assoc bit is set, we will send RXON
312 * after having added the bcast and bssid station.
313 */
314 if (!new_assoc) {
315 ret = iwl_send_cmd_pdu(priv, REPLY_RXON,
316 sizeof(struct iwl_rxon_cmd), &priv->staging_rxon);
317 if (ret) {
318 IWL_ERROR("Error setting new RXON (%d)\n", ret);
319 return ret;
320 }
321 memcpy(active_rxon, &priv->staging_rxon, sizeof(*active_rxon));
322 }
323
324 iwl_clear_stations_table(priv);
325
326 if (!priv->error_recovering)
327 priv->start_calib = 0;
328
329 /* Add the broadcast address so we can send broadcast frames */
330 if (iwl_rxon_add_station(priv, iwl_bcast_addr, 0) ==
331 IWL_INVALID_STATION) {
332 IWL_ERROR("Error adding BROADCAST address for transmit.\n");
333 return -EIO;
334 }
335
336 /* If we have set the ASSOC_MSK and we are in BSS mode then
337 * add the IWL_AP_ID to the station rate table */
338 if (new_assoc) {
339 if (priv->iw_mode == NL80211_IFTYPE_STATION) {
340 ret = iwl_rxon_add_station(priv,
341 priv->active_rxon.bssid_addr, 1);
342 if (ret == IWL_INVALID_STATION) {
343 IWL_ERROR("Error adding AP address for TX.\n");
344 return -EIO;
345 }
346 priv->assoc_station_added = 1;
347 if (priv->default_wep_key &&
348 iwl_send_static_wepkey_cmd(priv, 0))
349 IWL_ERROR("Could not send WEP static key.\n");
350 }
351
352 /* Apply the new configuration
353 * RXON assoc doesn't clear the station table in uCode,
354 */
355 ret = iwl_send_cmd_pdu(priv, REPLY_RXON,
356 sizeof(struct iwl_rxon_cmd), &priv->staging_rxon);
357 if (ret) {
358 IWL_ERROR("Error setting new RXON (%d)\n", ret);
359 return ret;
360 }
361 memcpy(active_rxon, &priv->staging_rxon, sizeof(*active_rxon));
362 }
363
364 iwl_init_sensitivity(priv);
365
366 /* If we issue a new RXON command which required a tune then we must
367 * send a new TXPOWER command or we won't be able to Tx any frames */
368 ret = iwl_set_tx_power(priv, priv->tx_power_user_lmt, true);
369 if (ret) {
370 IWL_ERROR("Error sending TX power (%d)\n", ret);
371 return ret;
372 }
373
374 return 0;
375 }
376
377 void iwl4965_update_chain_flags(struct iwl_priv *priv)
378 {
379
380 iwl_set_rxon_chain(priv);
381 iwl4965_commit_rxon(priv);
382 }
383
384 static int iwl4965_send_bt_config(struct iwl_priv *priv)
385 {
386 struct iwl4965_bt_cmd bt_cmd = {
387 .flags = 3,
388 .lead_time = 0xAA,
389 .max_kill = 1,
390 .kill_ack_mask = 0,
391 .kill_cts_mask = 0,
392 };
393
394 return iwl_send_cmd_pdu(priv, REPLY_BT_CONFIG,
395 sizeof(struct iwl4965_bt_cmd), &bt_cmd);
396 }
397
398 static void iwl_clear_free_frames(struct iwl_priv *priv)
399 {
400 struct list_head *element;
401
402 IWL_DEBUG_INFO("%d frames on pre-allocated heap on clear.\n",
403 priv->frames_count);
404
405 while (!list_empty(&priv->free_frames)) {
406 element = priv->free_frames.next;
407 list_del(element);
408 kfree(list_entry(element, struct iwl_frame, list));
409 priv->frames_count--;
410 }
411
412 if (priv->frames_count) {
413 IWL_WARNING("%d frames still in use. Did we lose one?\n",
414 priv->frames_count);
415 priv->frames_count = 0;
416 }
417 }
418
419 static struct iwl_frame *iwl_get_free_frame(struct iwl_priv *priv)
420 {
421 struct iwl_frame *frame;
422 struct list_head *element;
423 if (list_empty(&priv->free_frames)) {
424 frame = kzalloc(sizeof(*frame), GFP_KERNEL);
425 if (!frame) {
426 IWL_ERROR("Could not allocate frame!\n");
427 return NULL;
428 }
429
430 priv->frames_count++;
431 return frame;
432 }
433
434 element = priv->free_frames.next;
435 list_del(element);
436 return list_entry(element, struct iwl_frame, list);
437 }
438
439 static void iwl_free_frame(struct iwl_priv *priv, struct iwl_frame *frame)
440 {
441 memset(frame, 0, sizeof(*frame));
442 list_add(&frame->list, &priv->free_frames);
443 }
444
445 static unsigned int iwl_fill_beacon_frame(struct iwl_priv *priv,
446 struct ieee80211_hdr *hdr,
447 const u8 *dest, int left)
448 {
449 if (!iwl_is_associated(priv) || !priv->ibss_beacon ||
450 ((priv->iw_mode != NL80211_IFTYPE_ADHOC) &&
451 (priv->iw_mode != NL80211_IFTYPE_AP)))
452 return 0;
453
454 if (priv->ibss_beacon->len > left)
455 return 0;
456
457 memcpy(hdr, priv->ibss_beacon->data, priv->ibss_beacon->len);
458
459 return priv->ibss_beacon->len;
460 }
461
462 static u8 iwl4965_rate_get_lowest_plcp(struct iwl_priv *priv)
463 {
464 int i;
465 int rate_mask;
466
467 /* Set rate mask*/
468 if (priv->staging_rxon.flags & RXON_FLG_BAND_24G_MSK)
469 rate_mask = priv->active_rate_basic & 0xF;
470 else
471 rate_mask = priv->active_rate_basic & 0xFF0;
472
473 /* Find lowest valid rate */
474 for (i = IWL_RATE_1M_INDEX; i != IWL_RATE_INVALID;
475 i = iwl_rates[i].next_ieee) {
476 if (rate_mask & (1 << i))
477 return iwl_rates[i].plcp;
478 }
479
480 /* No valid rate was found. Assign the lowest one */
481 if (priv->staging_rxon.flags & RXON_FLG_BAND_24G_MSK)
482 return IWL_RATE_1M_PLCP;
483 else
484 return IWL_RATE_6M_PLCP;
485 }
486
487 static unsigned int iwl4965_hw_get_beacon_cmd(struct iwl_priv *priv,
488 struct iwl_frame *frame, u8 rate)
489 {
490 struct iwl_tx_beacon_cmd *tx_beacon_cmd;
491 unsigned int frame_size;
492
493 tx_beacon_cmd = &frame->u.beacon;
494 memset(tx_beacon_cmd, 0, sizeof(*tx_beacon_cmd));
495
496 tx_beacon_cmd->tx.sta_id = priv->hw_params.bcast_sta_id;
497 tx_beacon_cmd->tx.stop_time.life_time = TX_CMD_LIFE_TIME_INFINITE;
498
499 frame_size = iwl_fill_beacon_frame(priv, tx_beacon_cmd->frame,
500 iwl_bcast_addr,
501 sizeof(frame->u) - sizeof(*tx_beacon_cmd));
502
503 BUG_ON(frame_size > MAX_MPDU_SIZE);
504 tx_beacon_cmd->tx.len = cpu_to_le16((u16)frame_size);
505
506 if ((rate == IWL_RATE_1M_PLCP) || (rate >= IWL_RATE_2M_PLCP))
507 tx_beacon_cmd->tx.rate_n_flags =
508 iwl_hw_set_rate_n_flags(rate, RATE_MCS_CCK_MSK);
509 else
510 tx_beacon_cmd->tx.rate_n_flags =
511 iwl_hw_set_rate_n_flags(rate, 0);
512
513 tx_beacon_cmd->tx.tx_flags = TX_CMD_FLG_SEQ_CTL_MSK |
514 TX_CMD_FLG_TSF_MSK |
515 TX_CMD_FLG_STA_RATE_MSK;
516
517 return sizeof(*tx_beacon_cmd) + frame_size;
518 }
519 static int iwl4965_send_beacon_cmd(struct iwl_priv *priv)
520 {
521 struct iwl_frame *frame;
522 unsigned int frame_size;
523 int rc;
524 u8 rate;
525
526 frame = iwl_get_free_frame(priv);
527
528 if (!frame) {
529 IWL_ERROR("Could not obtain free frame buffer for beacon "
530 "command.\n");
531 return -ENOMEM;
532 }
533
534 rate = iwl4965_rate_get_lowest_plcp(priv);
535
536 frame_size = iwl4965_hw_get_beacon_cmd(priv, frame, rate);
537
538 rc = iwl_send_cmd_pdu(priv, REPLY_TX_BEACON, frame_size,
539 &frame->u.cmd[0]);
540
541 iwl_free_frame(priv, frame);
542
543 return rc;
544 }
545
546 /******************************************************************************
547 *
548 * Misc. internal state and helper functions
549 *
550 ******************************************************************************/
551
552 static void iwl4965_ht_conf(struct iwl_priv *priv,
553 struct ieee80211_bss_conf *bss_conf)
554 {
555 struct ieee80211_sta_ht_cap *ht_conf;
556 struct iwl_ht_info *iwl_conf = &priv->current_ht_config;
557 struct ieee80211_sta *sta;
558
559 IWL_DEBUG_MAC80211("enter: \n");
560
561 if (!iwl_conf->is_ht)
562 return;
563
564
565 /*
566 * It is totally wrong to base global information on something
567 * that is valid only when associated, alas, this driver works
568 * that way and I don't know how to fix it.
569 */
570
571 rcu_read_lock();
572 sta = ieee80211_find_sta(priv->hw, priv->bssid);
573 if (!sta) {
574 rcu_read_unlock();
575 return;
576 }
577 ht_conf = &sta->ht_cap;
578
579 if (ht_conf->cap & IEEE80211_HT_CAP_SGI_20)
580 iwl_conf->sgf |= HT_SHORT_GI_20MHZ;
581 if (ht_conf->cap & IEEE80211_HT_CAP_SGI_40)
582 iwl_conf->sgf |= HT_SHORT_GI_40MHZ;
583
584 iwl_conf->is_green_field = !!(ht_conf->cap & IEEE80211_HT_CAP_GRN_FLD);
585 iwl_conf->max_amsdu_size =
586 !!(ht_conf->cap & IEEE80211_HT_CAP_MAX_AMSDU);
587
588 iwl_conf->supported_chan_width =
589 !!(ht_conf->cap & IEEE80211_HT_CAP_SUP_WIDTH_20_40);
590
591 iwl_conf->extension_chan_offset = bss_conf->ht.secondary_channel_offset;
592 /* If no above or below channel supplied disable FAT channel */
593 if (iwl_conf->extension_chan_offset != IEEE80211_HT_PARAM_CHA_SEC_ABOVE &&
594 iwl_conf->extension_chan_offset != IEEE80211_HT_PARAM_CHA_SEC_BELOW) {
595 iwl_conf->extension_chan_offset = IEEE80211_HT_PARAM_CHA_SEC_NONE;
596 iwl_conf->supported_chan_width = 0;
597 }
598
599 iwl_conf->sm_ps = (u8)((ht_conf->cap & IEEE80211_HT_CAP_SM_PS) >> 2);
600
601 memcpy(&iwl_conf->mcs, &ht_conf->mcs, 16);
602
603 iwl_conf->tx_chan_width = bss_conf->ht.width_40_ok;
604 iwl_conf->ht_protection =
605 bss_conf->ht.operation_mode & IEEE80211_HT_OP_MODE_PROTECTION;
606 iwl_conf->non_GF_STA_present =
607 !!(bss_conf->ht.operation_mode & IEEE80211_HT_OP_MODE_NON_GF_STA_PRSNT);
608
609 rcu_read_unlock();
610
611 IWL_DEBUG_MAC80211("leave\n");
612 }
613
614 /*
615 * QoS support
616 */
617 static void iwl_activate_qos(struct iwl_priv *priv, u8 force)
618 {
619 if (test_bit(STATUS_EXIT_PENDING, &priv->status))
620 return;
621
622 if (!priv->qos_data.qos_enable)
623 return;
624
625 priv->qos_data.def_qos_parm.qos_flags = 0;
626
627 if (priv->qos_data.qos_cap.q_AP.queue_request &&
628 !priv->qos_data.qos_cap.q_AP.txop_request)
629 priv->qos_data.def_qos_parm.qos_flags |=
630 QOS_PARAM_FLG_TXOP_TYPE_MSK;
631 if (priv->qos_data.qos_active)
632 priv->qos_data.def_qos_parm.qos_flags |=
633 QOS_PARAM_FLG_UPDATE_EDCA_MSK;
634
635 if (priv->current_ht_config.is_ht)
636 priv->qos_data.def_qos_parm.qos_flags |= QOS_PARAM_FLG_TGN_MSK;
637
638 if (force || iwl_is_associated(priv)) {
639 IWL_DEBUG_QOS("send QoS cmd with Qos active=%d FLAGS=0x%X\n",
640 priv->qos_data.qos_active,
641 priv->qos_data.def_qos_parm.qos_flags);
642
643 iwl_send_cmd_pdu_async(priv, REPLY_QOS_PARAM,
644 sizeof(struct iwl_qosparam_cmd),
645 &priv->qos_data.def_qos_parm, NULL);
646 }
647 }
648
649 #define MAX_UCODE_BEACON_INTERVAL 4096
650
651 static u16 iwl_adjust_beacon_interval(u16 beacon_val)
652 {
653 u16 new_val = 0;
654 u16 beacon_factor = 0;
655
656 beacon_factor = (beacon_val + MAX_UCODE_BEACON_INTERVAL)
657 / MAX_UCODE_BEACON_INTERVAL;
658 new_val = beacon_val / beacon_factor;
659
660 return new_val;
661 }
662
663 static void iwl_setup_rxon_timing(struct iwl_priv *priv)
664 {
665 u64 tsf;
666 s32 interval_tm, rem;
667 unsigned long flags;
668 struct ieee80211_conf *conf = NULL;
669 u16 beacon_int = 0;
670
671 conf = ieee80211_get_hw_conf(priv->hw);
672
673 spin_lock_irqsave(&priv->lock, flags);
674 priv->rxon_timing.timestamp = cpu_to_le64(priv->timestamp);
675 priv->rxon_timing.listen_interval = cpu_to_le16(conf->listen_interval);
676
677 if (priv->iw_mode == NL80211_IFTYPE_STATION) {
678 beacon_int = iwl_adjust_beacon_interval(priv->beacon_int);
679 priv->rxon_timing.atim_window = 0;
680 } else {
681 beacon_int = iwl_adjust_beacon_interval(conf->beacon_int);
682
683 /* TODO: we need to get atim_window from upper stack
684 * for now we set to 0 */
685 priv->rxon_timing.atim_window = 0;
686 }
687
688 priv->rxon_timing.beacon_interval = cpu_to_le16(beacon_int);
689
690 tsf = priv->timestamp; /* tsf is modifed by do_div: copy it */
691 interval_tm = beacon_int * 1024;
692 rem = do_div(tsf, interval_tm);
693 priv->rxon_timing.beacon_init_val = cpu_to_le32(interval_tm - rem);
694
695 spin_unlock_irqrestore(&priv->lock, flags);
696 IWL_DEBUG_ASSOC("beacon interval %d beacon timer %d beacon tim %d\n",
697 le16_to_cpu(priv->rxon_timing.beacon_interval),
698 le32_to_cpu(priv->rxon_timing.beacon_init_val),
699 le16_to_cpu(priv->rxon_timing.atim_window));
700 }
701
702 static void iwl_set_flags_for_band(struct iwl_priv *priv,
703 enum ieee80211_band band)
704 {
705 if (band == IEEE80211_BAND_5GHZ) {
706 priv->staging_rxon.flags &=
707 ~(RXON_FLG_BAND_24G_MSK | RXON_FLG_AUTO_DETECT_MSK
708 | RXON_FLG_CCK_MSK);
709 priv->staging_rxon.flags |= RXON_FLG_SHORT_SLOT_MSK;
710 } else {
711 /* Copied from iwl4965_post_associate() */
712 if (priv->assoc_capability & WLAN_CAPABILITY_SHORT_SLOT_TIME)
713 priv->staging_rxon.flags |= RXON_FLG_SHORT_SLOT_MSK;
714 else
715 priv->staging_rxon.flags &= ~RXON_FLG_SHORT_SLOT_MSK;
716
717 if (priv->iw_mode == NL80211_IFTYPE_ADHOC)
718 priv->staging_rxon.flags &= ~RXON_FLG_SHORT_SLOT_MSK;
719
720 priv->staging_rxon.flags |= RXON_FLG_BAND_24G_MSK;
721 priv->staging_rxon.flags |= RXON_FLG_AUTO_DETECT_MSK;
722 priv->staging_rxon.flags &= ~RXON_FLG_CCK_MSK;
723 }
724 }
725
726 /*
727 * initialize rxon structure with default values from eeprom
728 */
729 static void iwl4965_connection_init_rx_config(struct iwl_priv *priv)
730 {
731 const struct iwl_channel_info *ch_info;
732
733 memset(&priv->staging_rxon, 0, sizeof(priv->staging_rxon));
734
735 switch (priv->iw_mode) {
736 case NL80211_IFTYPE_AP:
737 priv->staging_rxon.dev_type = RXON_DEV_TYPE_AP;
738 break;
739
740 case NL80211_IFTYPE_STATION:
741 priv->staging_rxon.dev_type = RXON_DEV_TYPE_ESS;
742 priv->staging_rxon.filter_flags = RXON_FILTER_ACCEPT_GRP_MSK;
743 break;
744
745 case NL80211_IFTYPE_ADHOC:
746 priv->staging_rxon.dev_type = RXON_DEV_TYPE_IBSS;
747 priv->staging_rxon.flags = RXON_FLG_SHORT_PREAMBLE_MSK;
748 priv->staging_rxon.filter_flags = RXON_FILTER_BCON_AWARE_MSK |
749 RXON_FILTER_ACCEPT_GRP_MSK;
750 break;
751
752 case NL80211_IFTYPE_MONITOR:
753 priv->staging_rxon.dev_type = RXON_DEV_TYPE_SNIFFER;
754 priv->staging_rxon.filter_flags = RXON_FILTER_PROMISC_MSK |
755 RXON_FILTER_CTL2HOST_MSK | RXON_FILTER_ACCEPT_GRP_MSK;
756 break;
757 default:
758 IWL_ERROR("Unsupported interface type %d\n", priv->iw_mode);
759 break;
760 }
761
762 #if 0
763 /* TODO: Figure out when short_preamble would be set and cache from
764 * that */
765 if (!hw_to_local(priv->hw)->short_preamble)
766 priv->staging_rxon.flags &= ~RXON_FLG_SHORT_PREAMBLE_MSK;
767 else
768 priv->staging_rxon.flags |= RXON_FLG_SHORT_PREAMBLE_MSK;
769 #endif
770
771 ch_info = iwl_get_channel_info(priv, priv->band,
772 le16_to_cpu(priv->active_rxon.channel));
773
774 if (!ch_info)
775 ch_info = &priv->channel_info[0];
776
777 /*
778 * in some case A channels are all non IBSS
779 * in this case force B/G channel
780 */
781 if ((priv->iw_mode == NL80211_IFTYPE_ADHOC) &&
782 !(is_channel_ibss(ch_info)))
783 ch_info = &priv->channel_info[0];
784
785 priv->staging_rxon.channel = cpu_to_le16(ch_info->channel);
786 priv->band = ch_info->band;
787
788 iwl_set_flags_for_band(priv, priv->band);
789
790 priv->staging_rxon.ofdm_basic_rates =
791 (IWL_OFDM_RATES_MASK >> IWL_FIRST_OFDM_RATE) & 0xFF;
792 priv->staging_rxon.cck_basic_rates =
793 (IWL_CCK_RATES_MASK >> IWL_FIRST_CCK_RATE) & 0xF;
794
795 priv->staging_rxon.flags &= ~(RXON_FLG_CHANNEL_MODE_MIXED_MSK |
796 RXON_FLG_CHANNEL_MODE_PURE_40_MSK);
797 memcpy(priv->staging_rxon.node_addr, priv->mac_addr, ETH_ALEN);
798 memcpy(priv->staging_rxon.wlap_bssid_addr, priv->mac_addr, ETH_ALEN);
799 priv->staging_rxon.ofdm_ht_single_stream_basic_rates = 0xff;
800 priv->staging_rxon.ofdm_ht_dual_stream_basic_rates = 0xff;
801 iwl_set_rxon_chain(priv);
802 }
803
804 static int iwl4965_set_mode(struct iwl_priv *priv, int mode)
805 {
806 priv->iw_mode = mode;
807
808 iwl4965_connection_init_rx_config(priv);
809 memcpy(priv->staging_rxon.node_addr, priv->mac_addr, ETH_ALEN);
810
811 iwl_clear_stations_table(priv);
812
813 /* dont commit rxon if rf-kill is on*/
814 if (!iwl_is_ready_rf(priv))
815 return -EAGAIN;
816
817 cancel_delayed_work(&priv->scan_check);
818 if (iwl_scan_cancel_timeout(priv, 100)) {
819 IWL_WARNING("Aborted scan still in progress after 100ms\n");
820 IWL_DEBUG_MAC80211("leaving - scan abort failed.\n");
821 return -EAGAIN;
822 }
823
824 iwl4965_commit_rxon(priv);
825
826 return 0;
827 }
828
829 static void iwl4965_set_rate(struct iwl_priv *priv)
830 {
831 const struct ieee80211_supported_band *hw = NULL;
832 struct ieee80211_rate *rate;
833 int i;
834
835 hw = iwl_get_hw_mode(priv, priv->band);
836 if (!hw) {
837 IWL_ERROR("Failed to set rate: unable to get hw mode\n");
838 return;
839 }
840
841 priv->active_rate = 0;
842 priv->active_rate_basic = 0;
843
844 for (i = 0; i < hw->n_bitrates; i++) {
845 rate = &(hw->bitrates[i]);
846 if (rate->hw_value < IWL_RATE_COUNT)
847 priv->active_rate |= (1 << rate->hw_value);
848 }
849
850 IWL_DEBUG_RATE("Set active_rate = %0x, active_rate_basic = %0x\n",
851 priv->active_rate, priv->active_rate_basic);
852
853 /*
854 * If a basic rate is configured, then use it (adding IWL_RATE_1M_MASK)
855 * otherwise set it to the default of all CCK rates and 6, 12, 24 for
856 * OFDM
857 */
858 if (priv->active_rate_basic & IWL_CCK_BASIC_RATES_MASK)
859 priv->staging_rxon.cck_basic_rates =
860 ((priv->active_rate_basic &
861 IWL_CCK_RATES_MASK) >> IWL_FIRST_CCK_RATE) & 0xF;
862 else
863 priv->staging_rxon.cck_basic_rates =
864 (IWL_CCK_BASIC_RATES_MASK >> IWL_FIRST_CCK_RATE) & 0xF;
865
866 if (priv->active_rate_basic & IWL_OFDM_BASIC_RATES_MASK)
867 priv->staging_rxon.ofdm_basic_rates =
868 ((priv->active_rate_basic &
869 (IWL_OFDM_BASIC_RATES_MASK | IWL_RATE_6M_MASK)) >>
870 IWL_FIRST_OFDM_RATE) & 0xFF;
871 else
872 priv->staging_rxon.ofdm_basic_rates =
873 (IWL_OFDM_BASIC_RATES_MASK >> IWL_FIRST_OFDM_RATE) & 0xFF;
874 }
875
876 #ifdef CONFIG_IWLAGN_SPECTRUM_MEASUREMENT
877
878 #include "iwl-spectrum.h"
879
880 #define BEACON_TIME_MASK_LOW 0x00FFFFFF
881 #define BEACON_TIME_MASK_HIGH 0xFF000000
882 #define TIME_UNIT 1024
883
884 /*
885 * extended beacon time format
886 * time in usec will be changed into a 32-bit value in 8:24 format
887 * the high 1 byte is the beacon counts
888 * the lower 3 bytes is the time in usec within one beacon interval
889 */
890
891 static u32 iwl4965_usecs_to_beacons(u32 usec, u32 beacon_interval)
892 {
893 u32 quot;
894 u32 rem;
895 u32 interval = beacon_interval * 1024;
896
897 if (!interval || !usec)
898 return 0;
899
900 quot = (usec / interval) & (BEACON_TIME_MASK_HIGH >> 24);
901 rem = (usec % interval) & BEACON_TIME_MASK_LOW;
902
903 return (quot << 24) + rem;
904 }
905
906 /* base is usually what we get from ucode with each received frame,
907 * the same as HW timer counter counting down
908 */
909
910 static __le32 iwl4965_add_beacon_time(u32 base, u32 addon, u32 beacon_interval)
911 {
912 u32 base_low = base & BEACON_TIME_MASK_LOW;
913 u32 addon_low = addon & BEACON_TIME_MASK_LOW;
914 u32 interval = beacon_interval * TIME_UNIT;
915 u32 res = (base & BEACON_TIME_MASK_HIGH) +
916 (addon & BEACON_TIME_MASK_HIGH);
917
918 if (base_low > addon_low)
919 res += base_low - addon_low;
920 else if (base_low < addon_low) {
921 res += interval + base_low - addon_low;
922 res += (1 << 24);
923 } else
924 res += (1 << 24);
925
926 return cpu_to_le32(res);
927 }
928
929 static int iwl4965_get_measurement(struct iwl_priv *priv,
930 struct ieee80211_measurement_params *params,
931 u8 type)
932 {
933 struct iwl4965_spectrum_cmd spectrum;
934 struct iwl_rx_packet *res;
935 struct iwl_host_cmd cmd = {
936 .id = REPLY_SPECTRUM_MEASUREMENT_CMD,
937 .data = (void *)&spectrum,
938 .meta.flags = CMD_WANT_SKB,
939 };
940 u32 add_time = le64_to_cpu(params->start_time);
941 int rc;
942 int spectrum_resp_status;
943 int duration = le16_to_cpu(params->duration);
944
945 if (iwl_is_associated(priv))
946 add_time =
947 iwl4965_usecs_to_beacons(
948 le64_to_cpu(params->start_time) - priv->last_tsf,
949 le16_to_cpu(priv->rxon_timing.beacon_interval));
950
951 memset(&spectrum, 0, sizeof(spectrum));
952
953 spectrum.channel_count = cpu_to_le16(1);
954 spectrum.flags =
955 RXON_FLG_TSF2HOST_MSK | RXON_FLG_ANT_A_MSK | RXON_FLG_DIS_DIV_MSK;
956 spectrum.filter_flags = MEASUREMENT_FILTER_FLAG;
957 cmd.len = sizeof(spectrum);
958 spectrum.len = cpu_to_le16(cmd.len - sizeof(spectrum.len));
959
960 if (iwl_is_associated(priv))
961 spectrum.start_time =
962 iwl4965_add_beacon_time(priv->last_beacon_time,
963 add_time,
964 le16_to_cpu(priv->rxon_timing.beacon_interval));
965 else
966 spectrum.start_time = 0;
967
968 spectrum.channels[0].duration = cpu_to_le32(duration * TIME_UNIT);
969 spectrum.channels[0].channel = params->channel;
970 spectrum.channels[0].type = type;
971 if (priv->active_rxon.flags & RXON_FLG_BAND_24G_MSK)
972 spectrum.flags |= RXON_FLG_BAND_24G_MSK |
973 RXON_FLG_AUTO_DETECT_MSK | RXON_FLG_TGG_PROTECT_MSK;
974
975 rc = iwl_send_cmd_sync(priv, &cmd);
976 if (rc)
977 return rc;
978
979 res = (struct iwl_rx_packet *)cmd.meta.u.skb->data;
980 if (res->hdr.flags & IWL_CMD_FAILED_MSK) {
981 IWL_ERROR("Bad return from REPLY_RX_ON_ASSOC command\n");
982 rc = -EIO;
983 }
984
985 spectrum_resp_status = le16_to_cpu(res->u.spectrum.status);
986 switch (spectrum_resp_status) {
987 case 0: /* Command will be handled */
988 if (res->u.spectrum.id != 0xff) {
989 IWL_DEBUG_INFO
990 ("Replaced existing measurement: %d\n",
991 res->u.spectrum.id);
992 priv->measurement_status &= ~MEASUREMENT_READY;
993 }
994 priv->measurement_status |= MEASUREMENT_ACTIVE;
995 rc = 0;
996 break;
997
998 case 1: /* Command will not be handled */
999 rc = -EAGAIN;
1000 break;
1001 }
1002
1003 dev_kfree_skb_any(cmd.meta.u.skb);
1004
1005 return rc;
1006 }
1007 #endif
1008
1009 /******************************************************************************
1010 *
1011 * Generic RX handler implementations
1012 *
1013 ******************************************************************************/
1014 static void iwl_rx_reply_alive(struct iwl_priv *priv,
1015 struct iwl_rx_mem_buffer *rxb)
1016 {
1017 struct iwl_rx_packet *pkt = (struct iwl_rx_packet *)rxb->skb->data;
1018 struct iwl_alive_resp *palive;
1019 struct delayed_work *pwork;
1020
1021 palive = &pkt->u.alive_frame;
1022
1023 IWL_DEBUG_INFO("Alive ucode status 0x%08X revision "
1024 "0x%01X 0x%01X\n",
1025 palive->is_valid, palive->ver_type,
1026 palive->ver_subtype);
1027
1028 if (palive->ver_subtype == INITIALIZE_SUBTYPE) {
1029 IWL_DEBUG_INFO("Initialization Alive received.\n");
1030 memcpy(&priv->card_alive_init,
1031 &pkt->u.alive_frame,
1032 sizeof(struct iwl_init_alive_resp));
1033 pwork = &priv->init_alive_start;
1034 } else {
1035 IWL_DEBUG_INFO("Runtime Alive received.\n");
1036 memcpy(&priv->card_alive, &pkt->u.alive_frame,
1037 sizeof(struct iwl_alive_resp));
1038 pwork = &priv->alive_start;
1039 }
1040
1041 /* We delay the ALIVE response by 5ms to
1042 * give the HW RF Kill time to activate... */
1043 if (palive->is_valid == UCODE_VALID_OK)
1044 queue_delayed_work(priv->workqueue, pwork,
1045 msecs_to_jiffies(5));
1046 else
1047 IWL_WARNING("uCode did not respond OK.\n");
1048 }
1049
1050 static void iwl4965_rx_reply_error(struct iwl_priv *priv,
1051 struct iwl_rx_mem_buffer *rxb)
1052 {
1053 struct iwl_rx_packet *pkt = (struct iwl_rx_packet *)rxb->skb->data;
1054
1055 IWL_ERROR("Error Reply type 0x%08X cmd %s (0x%02X) "
1056 "seq 0x%04X ser 0x%08X\n",
1057 le32_to_cpu(pkt->u.err_resp.error_type),
1058 get_cmd_string(pkt->u.err_resp.cmd_id),
1059 pkt->u.err_resp.cmd_id,
1060 le16_to_cpu(pkt->u.err_resp.bad_cmd_seq_num),
1061 le32_to_cpu(pkt->u.err_resp.error_info));
1062 }
1063
1064 #define TX_STATUS_ENTRY(x) case TX_STATUS_FAIL_ ## x: return #x
1065
1066 static void iwl4965_rx_csa(struct iwl_priv *priv, struct iwl_rx_mem_buffer *rxb)
1067 {
1068 struct iwl_rx_packet *pkt = (struct iwl_rx_packet *)rxb->skb->data;
1069 struct iwl_rxon_cmd *rxon = (void *)&priv->active_rxon;
1070 struct iwl4965_csa_notification *csa = &(pkt->u.csa_notif);
1071 IWL_DEBUG_11H("CSA notif: channel %d, status %d\n",
1072 le16_to_cpu(csa->channel), le32_to_cpu(csa->status));
1073 rxon->channel = csa->channel;
1074 priv->staging_rxon.channel = csa->channel;
1075 }
1076
1077 static void iwl4965_rx_spectrum_measure_notif(struct iwl_priv *priv,
1078 struct iwl_rx_mem_buffer *rxb)
1079 {
1080 #ifdef CONFIG_IWLAGN_SPECTRUM_MEASUREMENT
1081 struct iwl_rx_packet *pkt = (struct iwl_rx_packet *)rxb->skb->data;
1082 struct iwl4965_spectrum_notification *report = &(pkt->u.spectrum_notif);
1083
1084 if (!report->state) {
1085 IWL_DEBUG(IWL_DL_11H,
1086 "Spectrum Measure Notification: Start\n");
1087 return;
1088 }
1089
1090 memcpy(&priv->measure_report, report, sizeof(*report));
1091 priv->measurement_status |= MEASUREMENT_READY;
1092 #endif
1093 }
1094
1095 static void iwl4965_rx_pm_sleep_notif(struct iwl_priv *priv,
1096 struct iwl_rx_mem_buffer *rxb)
1097 {
1098 #ifdef CONFIG_IWLWIFI_DEBUG
1099 struct iwl_rx_packet *pkt = (struct iwl_rx_packet *)rxb->skb->data;
1100 struct iwl4965_sleep_notification *sleep = &(pkt->u.sleep_notif);
1101 IWL_DEBUG_RX("sleep mode: %d, src: %d\n",
1102 sleep->pm_sleep_mode, sleep->pm_wakeup_src);
1103 #endif
1104 }
1105
1106 static void iwl4965_rx_pm_debug_statistics_notif(struct iwl_priv *priv,
1107 struct iwl_rx_mem_buffer *rxb)
1108 {
1109 struct iwl_rx_packet *pkt = (struct iwl_rx_packet *)rxb->skb->data;
1110 IWL_DEBUG_RADIO("Dumping %d bytes of unhandled "
1111 "notification for %s:\n",
1112 le32_to_cpu(pkt->len), get_cmd_string(pkt->hdr.cmd));
1113 iwl_print_hex_dump(priv, IWL_DL_RADIO, pkt->u.raw, le32_to_cpu(pkt->len));
1114 }
1115
1116 static void iwl4965_bg_beacon_update(struct work_struct *work)
1117 {
1118 struct iwl_priv *priv =
1119 container_of(work, struct iwl_priv, beacon_update);
1120 struct sk_buff *beacon;
1121
1122 /* Pull updated AP beacon from mac80211. will fail if not in AP mode */
1123 beacon = ieee80211_beacon_get(priv->hw, priv->vif);
1124
1125 if (!beacon) {
1126 IWL_ERROR("update beacon failed\n");
1127 return;
1128 }
1129
1130 mutex_lock(&priv->mutex);
1131 /* new beacon skb is allocated every time; dispose previous.*/
1132 if (priv->ibss_beacon)
1133 dev_kfree_skb(priv->ibss_beacon);
1134
1135 priv->ibss_beacon = beacon;
1136 mutex_unlock(&priv->mutex);
1137
1138 iwl4965_send_beacon_cmd(priv);
1139 }
1140
1141 /**
1142 * iwl4965_bg_statistics_periodic - Timer callback to queue statistics
1143 *
1144 * This callback is provided in order to send a statistics request.
1145 *
1146 * This timer function is continually reset to execute within
1147 * REG_RECALIB_PERIOD seconds since the last STATISTICS_NOTIFICATION
1148 * was received. We need to ensure we receive the statistics in order
1149 * to update the temperature used for calibrating the TXPOWER.
1150 */
1151 static void iwl4965_bg_statistics_periodic(unsigned long data)
1152 {
1153 struct iwl_priv *priv = (struct iwl_priv *)data;
1154
1155 if (test_bit(STATUS_EXIT_PENDING, &priv->status))
1156 return;
1157
1158 iwl_send_statistics_request(priv, CMD_ASYNC);
1159 }
1160
1161 static void iwl4965_rx_beacon_notif(struct iwl_priv *priv,
1162 struct iwl_rx_mem_buffer *rxb)
1163 {
1164 #ifdef CONFIG_IWLWIFI_DEBUG
1165 struct iwl_rx_packet *pkt = (struct iwl_rx_packet *)rxb->skb->data;
1166 struct iwl4965_beacon_notif *beacon = &(pkt->u.beacon_status);
1167 u8 rate = iwl_hw_get_rate(beacon->beacon_notify_hdr.rate_n_flags);
1168
1169 IWL_DEBUG_RX("beacon status %x retries %d iss %d "
1170 "tsf %d %d rate %d\n",
1171 le32_to_cpu(beacon->beacon_notify_hdr.u.status) & TX_STATUS_MSK,
1172 beacon->beacon_notify_hdr.failure_frame,
1173 le32_to_cpu(beacon->ibss_mgr_status),
1174 le32_to_cpu(beacon->high_tsf),
1175 le32_to_cpu(beacon->low_tsf), rate);
1176 #endif
1177
1178 if ((priv->iw_mode == NL80211_IFTYPE_AP) &&
1179 (!test_bit(STATUS_EXIT_PENDING, &priv->status)))
1180 queue_work(priv->workqueue, &priv->beacon_update);
1181 }
1182
1183 /* Handle notification from uCode that card's power state is changing
1184 * due to software, hardware, or critical temperature RFKILL */
1185 static void iwl4965_rx_card_state_notif(struct iwl_priv *priv,
1186 struct iwl_rx_mem_buffer *rxb)
1187 {
1188 struct iwl_rx_packet *pkt = (struct iwl_rx_packet *)rxb->skb->data;
1189 u32 flags = le32_to_cpu(pkt->u.card_state_notif.flags);
1190 unsigned long status = priv->status;
1191
1192 IWL_DEBUG_RF_KILL("Card state received: HW:%s SW:%s\n",
1193 (flags & HW_CARD_DISABLED) ? "Kill" : "On",
1194 (flags & SW_CARD_DISABLED) ? "Kill" : "On");
1195
1196 if (flags & (SW_CARD_DISABLED | HW_CARD_DISABLED |
1197 RF_CARD_DISABLED)) {
1198
1199 iwl_write32(priv, CSR_UCODE_DRV_GP1_SET,
1200 CSR_UCODE_DRV_GP1_BIT_CMD_BLOCKED);
1201
1202 if (!iwl_grab_nic_access(priv)) {
1203 iwl_write_direct32(
1204 priv, HBUS_TARG_MBX_C,
1205 HBUS_TARG_MBX_C_REG_BIT_CMD_BLOCKED);
1206
1207 iwl_release_nic_access(priv);
1208 }
1209
1210 if (!(flags & RXON_CARD_DISABLED)) {
1211 iwl_write32(priv, CSR_UCODE_DRV_GP1_CLR,
1212 CSR_UCODE_DRV_GP1_BIT_CMD_BLOCKED);
1213 if (!iwl_grab_nic_access(priv)) {
1214 iwl_write_direct32(
1215 priv, HBUS_TARG_MBX_C,
1216 HBUS_TARG_MBX_C_REG_BIT_CMD_BLOCKED);
1217
1218 iwl_release_nic_access(priv);
1219 }
1220 }
1221
1222 if (flags & RF_CARD_DISABLED) {
1223 iwl_write32(priv, CSR_UCODE_DRV_GP1_SET,
1224 CSR_UCODE_DRV_GP1_REG_BIT_CT_KILL_EXIT);
1225 iwl_read32(priv, CSR_UCODE_DRV_GP1);
1226 if (!iwl_grab_nic_access(priv))
1227 iwl_release_nic_access(priv);
1228 }
1229 }
1230
1231 if (flags & HW_CARD_DISABLED)
1232 set_bit(STATUS_RF_KILL_HW, &priv->status);
1233 else
1234 clear_bit(STATUS_RF_KILL_HW, &priv->status);
1235
1236
1237 if (flags & SW_CARD_DISABLED)
1238 set_bit(STATUS_RF_KILL_SW, &priv->status);
1239 else
1240 clear_bit(STATUS_RF_KILL_SW, &priv->status);
1241
1242 if (!(flags & RXON_CARD_DISABLED))
1243 iwl_scan_cancel(priv);
1244
1245 if ((test_bit(STATUS_RF_KILL_HW, &status) !=
1246 test_bit(STATUS_RF_KILL_HW, &priv->status)) ||
1247 (test_bit(STATUS_RF_KILL_SW, &status) !=
1248 test_bit(STATUS_RF_KILL_SW, &priv->status)))
1249 queue_work(priv->workqueue, &priv->rf_kill);
1250 else
1251 wake_up_interruptible(&priv->wait_command_queue);
1252 }
1253
1254 int iwl4965_set_pwr_src(struct iwl_priv *priv, enum iwl_pwr_src src)
1255 {
1256 int ret;
1257 unsigned long flags;
1258
1259 spin_lock_irqsave(&priv->lock, flags);
1260 ret = iwl_grab_nic_access(priv);
1261 if (ret)
1262 goto err;
1263
1264 if (src == IWL_PWR_SRC_VAUX) {
1265 u32 val;
1266 ret = pci_read_config_dword(priv->pci_dev, PCI_CFG_POWER_SOURCE,
1267 &val);
1268
1269 if (val & PCI_CFG_PMC_PME_FROM_D3COLD_SUPPORT)
1270 iwl_set_bits_mask_prph(priv, APMG_PS_CTRL_REG,
1271 APMG_PS_CTRL_VAL_PWR_SRC_VAUX,
1272 ~APMG_PS_CTRL_MSK_PWR_SRC);
1273 } else {
1274 iwl_set_bits_mask_prph(priv, APMG_PS_CTRL_REG,
1275 APMG_PS_CTRL_VAL_PWR_SRC_VMAIN,
1276 ~APMG_PS_CTRL_MSK_PWR_SRC);
1277 }
1278
1279 iwl_release_nic_access(priv);
1280 err:
1281 spin_unlock_irqrestore(&priv->lock, flags);
1282 return ret;
1283 }
1284
1285 /**
1286 * iwl4965_setup_rx_handlers - Initialize Rx handler callbacks
1287 *
1288 * Setup the RX handlers for each of the reply types sent from the uCode
1289 * to the host.
1290 *
1291 * This function chains into the hardware specific files for them to setup
1292 * any hardware specific handlers as well.
1293 */
1294 static void iwl_setup_rx_handlers(struct iwl_priv *priv)
1295 {
1296 priv->rx_handlers[REPLY_ALIVE] = iwl_rx_reply_alive;
1297 priv->rx_handlers[REPLY_ERROR] = iwl4965_rx_reply_error;
1298 priv->rx_handlers[CHANNEL_SWITCH_NOTIFICATION] = iwl4965_rx_csa;
1299 priv->rx_handlers[SPECTRUM_MEASURE_NOTIFICATION] =
1300 iwl4965_rx_spectrum_measure_notif;
1301 priv->rx_handlers[PM_SLEEP_NOTIFICATION] = iwl4965_rx_pm_sleep_notif;
1302 priv->rx_handlers[PM_DEBUG_STATISTIC_NOTIFIC] =
1303 iwl4965_rx_pm_debug_statistics_notif;
1304 priv->rx_handlers[BEACON_NOTIFICATION] = iwl4965_rx_beacon_notif;
1305
1306 /*
1307 * The same handler is used for both the REPLY to a discrete
1308 * statistics request from the host as well as for the periodic
1309 * statistics notifications (after received beacons) from the uCode.
1310 */
1311 priv->rx_handlers[REPLY_STATISTICS_CMD] = iwl_rx_statistics;
1312 priv->rx_handlers[STATISTICS_NOTIFICATION] = iwl_rx_statistics;
1313
1314 iwl_setup_rx_scan_handlers(priv);
1315
1316 /* status change handler */
1317 priv->rx_handlers[CARD_STATE_NOTIFICATION] = iwl4965_rx_card_state_notif;
1318
1319 priv->rx_handlers[MISSED_BEACONS_NOTIFICATION] =
1320 iwl_rx_missed_beacon_notif;
1321 /* Rx handlers */
1322 priv->rx_handlers[REPLY_RX_PHY_CMD] = iwl_rx_reply_rx_phy;
1323 priv->rx_handlers[REPLY_RX_MPDU_CMD] = iwl_rx_reply_rx;
1324 /* block ack */
1325 priv->rx_handlers[REPLY_COMPRESSED_BA] = iwl_rx_reply_compressed_ba;
1326 /* Set up hardware specific Rx handlers */
1327 priv->cfg->ops->lib->rx_handler_setup(priv);
1328 }
1329
1330 /*
1331 * this should be called while priv->lock is locked
1332 */
1333 static void __iwl_rx_replenish(struct iwl_priv *priv)
1334 {
1335 iwl_rx_allocate(priv);
1336 iwl_rx_queue_restock(priv);
1337 }
1338
1339
1340 /**
1341 * iwl_rx_handle - Main entry function for receiving responses from uCode
1342 *
1343 * Uses the priv->rx_handlers callback function array to invoke
1344 * the appropriate handlers, including command responses,
1345 * frame-received notifications, and other notifications.
1346 */
1347 void iwl_rx_handle(struct iwl_priv *priv)
1348 {
1349 struct iwl_rx_mem_buffer *rxb;
1350 struct iwl_rx_packet *pkt;
1351 struct iwl_rx_queue *rxq = &priv->rxq;
1352 u32 r, i;
1353 int reclaim;
1354 unsigned long flags;
1355 u8 fill_rx = 0;
1356 u32 count = 8;
1357
1358 /* uCode's read index (stored in shared DRAM) indicates the last Rx
1359 * buffer that the driver may process (last buffer filled by ucode). */
1360 r = priv->cfg->ops->lib->shared_mem_rx_idx(priv);
1361 i = rxq->read;
1362
1363 /* Rx interrupt, but nothing sent from uCode */
1364 if (i == r)
1365 IWL_DEBUG(IWL_DL_RX, "r = %d, i = %d\n", r, i);
1366
1367 if (iwl_rx_queue_space(rxq) > (RX_QUEUE_SIZE / 2))
1368 fill_rx = 1;
1369
1370 while (i != r) {
1371 rxb = rxq->queue[i];
1372
1373 /* If an RXB doesn't have a Rx queue slot associated with it,
1374 * then a bug has been introduced in the queue refilling
1375 * routines -- catch it here */
1376 BUG_ON(rxb == NULL);
1377
1378 rxq->queue[i] = NULL;
1379
1380 pci_dma_sync_single_for_cpu(priv->pci_dev, rxb->dma_addr,
1381 priv->hw_params.rx_buf_size,
1382 PCI_DMA_FROMDEVICE);
1383 pkt = (struct iwl_rx_packet *)rxb->skb->data;
1384
1385 /* Reclaim a command buffer only if this packet is a response
1386 * to a (driver-originated) command.
1387 * If the packet (e.g. Rx frame) originated from uCode,
1388 * there is no command buffer to reclaim.
1389 * Ucode should set SEQ_RX_FRAME bit if ucode-originated,
1390 * but apparently a few don't get set; catch them here. */
1391 reclaim = !(pkt->hdr.sequence & SEQ_RX_FRAME) &&
1392 (pkt->hdr.cmd != REPLY_RX_PHY_CMD) &&
1393 (pkt->hdr.cmd != REPLY_RX) &&
1394 (pkt->hdr.cmd != REPLY_RX_MPDU_CMD) &&
1395 (pkt->hdr.cmd != REPLY_COMPRESSED_BA) &&
1396 (pkt->hdr.cmd != STATISTICS_NOTIFICATION) &&
1397 (pkt->hdr.cmd != REPLY_TX);
1398
1399 /* Based on type of command response or notification,
1400 * handle those that need handling via function in
1401 * rx_handlers table. See iwl4965_setup_rx_handlers() */
1402 if (priv->rx_handlers[pkt->hdr.cmd]) {
1403 IWL_DEBUG(IWL_DL_RX, "r = %d, i = %d, %s, 0x%02x\n", r,
1404 i, get_cmd_string(pkt->hdr.cmd), pkt->hdr.cmd);
1405 priv->rx_handlers[pkt->hdr.cmd] (priv, rxb);
1406 } else {
1407 /* No handling needed */
1408 IWL_DEBUG(IWL_DL_RX,
1409 "r %d i %d No handler needed for %s, 0x%02x\n",
1410 r, i, get_cmd_string(pkt->hdr.cmd),
1411 pkt->hdr.cmd);
1412 }
1413
1414 if (reclaim) {
1415 /* Invoke any callbacks, transfer the skb to caller, and
1416 * fire off the (possibly) blocking iwl_send_cmd()
1417 * as we reclaim the driver command queue */
1418 if (rxb && rxb->skb)
1419 iwl_tx_cmd_complete(priv, rxb);
1420 else
1421 IWL_WARNING("Claim null rxb?\n");
1422 }
1423
1424 /* For now we just don't re-use anything. We can tweak this
1425 * later to try and re-use notification packets and SKBs that
1426 * fail to Rx correctly */
1427 if (rxb->skb != NULL) {
1428 priv->alloc_rxb_skb--;
1429 dev_kfree_skb_any(rxb->skb);
1430 rxb->skb = NULL;
1431 }
1432
1433 pci_unmap_single(priv->pci_dev, rxb->dma_addr,
1434 priv->hw_params.rx_buf_size,
1435 PCI_DMA_FROMDEVICE);
1436 spin_lock_irqsave(&rxq->lock, flags);
1437 list_add_tail(&rxb->list, &priv->rxq.rx_used);
1438 spin_unlock_irqrestore(&rxq->lock, flags);
1439 i = (i + 1) & RX_QUEUE_MASK;
1440 /* If there are a lot of unused frames,
1441 * restock the Rx queue so ucode wont assert. */
1442 if (fill_rx) {
1443 count++;
1444 if (count >= 8) {
1445 priv->rxq.read = i;
1446 __iwl_rx_replenish(priv);
1447 count = 0;
1448 }
1449 }
1450 }
1451
1452 /* Backtrack one entry */
1453 priv->rxq.read = i;
1454 iwl_rx_queue_restock(priv);
1455 }
1456
1457 #ifdef CONFIG_IWLWIFI_DEBUG
1458 static void iwl4965_print_rx_config_cmd(struct iwl_priv *priv)
1459 {
1460 struct iwl_rxon_cmd *rxon = &priv->staging_rxon;
1461
1462 IWL_DEBUG_RADIO("RX CONFIG:\n");
1463 iwl_print_hex_dump(priv, IWL_DL_RADIO, (u8 *) rxon, sizeof(*rxon));
1464 IWL_DEBUG_RADIO("u16 channel: 0x%x\n", le16_to_cpu(rxon->channel));
1465 IWL_DEBUG_RADIO("u32 flags: 0x%08X\n", le32_to_cpu(rxon->flags));
1466 IWL_DEBUG_RADIO("u32 filter_flags: 0x%08x\n",
1467 le32_to_cpu(rxon->filter_flags));
1468 IWL_DEBUG_RADIO("u8 dev_type: 0x%x\n", rxon->dev_type);
1469 IWL_DEBUG_RADIO("u8 ofdm_basic_rates: 0x%02x\n",
1470 rxon->ofdm_basic_rates);
1471 IWL_DEBUG_RADIO("u8 cck_basic_rates: 0x%02x\n", rxon->cck_basic_rates);
1472 IWL_DEBUG_RADIO("u8[6] node_addr: %pM\n", rxon->node_addr);
1473 IWL_DEBUG_RADIO("u8[6] bssid_addr: %pM\n", rxon->bssid_addr);
1474 IWL_DEBUG_RADIO("u16 assoc_id: 0x%x\n", le16_to_cpu(rxon->assoc_id));
1475 }
1476 #endif
1477
1478 static void iwl4965_enable_interrupts(struct iwl_priv *priv)
1479 {
1480 IWL_DEBUG_ISR("Enabling interrupts\n");
1481 set_bit(STATUS_INT_ENABLED, &priv->status);
1482 iwl_write32(priv, CSR_INT_MASK, CSR_INI_SET_MASK);
1483 }
1484
1485 /* call this function to flush any scheduled tasklet */
1486 static inline void iwl_synchronize_irq(struct iwl_priv *priv)
1487 {
1488 /* wait to make sure we flush pending tasklet*/
1489 synchronize_irq(priv->pci_dev->irq);
1490 tasklet_kill(&priv->irq_tasklet);
1491 }
1492
1493 static inline void iwl4965_disable_interrupts(struct iwl_priv *priv)
1494 {
1495 clear_bit(STATUS_INT_ENABLED, &priv->status);
1496
1497 /* disable interrupts from uCode/NIC to host */
1498 iwl_write32(priv, CSR_INT_MASK, 0x00000000);
1499
1500 /* acknowledge/clear/reset any interrupts still pending
1501 * from uCode or flow handler (Rx/Tx DMA) */
1502 iwl_write32(priv, CSR_INT, 0xffffffff);
1503 iwl_write32(priv, CSR_FH_INT_STATUS, 0xffffffff);
1504 IWL_DEBUG_ISR("Disabled interrupts\n");
1505 }
1506
1507
1508 /**
1509 * iwl4965_irq_handle_error - called for HW or SW error interrupt from card
1510 */
1511 static void iwl4965_irq_handle_error(struct iwl_priv *priv)
1512 {
1513 /* Set the FW error flag -- cleared on iwl4965_down */
1514 set_bit(STATUS_FW_ERROR, &priv->status);
1515
1516 /* Cancel currently queued command. */
1517 clear_bit(STATUS_HCMD_ACTIVE, &priv->status);
1518
1519 #ifdef CONFIG_IWLWIFI_DEBUG
1520 if (priv->debug_level & IWL_DL_FW_ERRORS) {
1521 iwl_dump_nic_error_log(priv);
1522 iwl_dump_nic_event_log(priv);
1523 iwl4965_print_rx_config_cmd(priv);
1524 }
1525 #endif
1526
1527 wake_up_interruptible(&priv->wait_command_queue);
1528
1529 /* Keep the restart process from trying to send host
1530 * commands by clearing the INIT status bit */
1531 clear_bit(STATUS_READY, &priv->status);
1532
1533 if (!test_bit(STATUS_EXIT_PENDING, &priv->status)) {
1534 IWL_DEBUG(IWL_DL_FW_ERRORS,
1535 "Restarting adapter due to uCode error.\n");
1536
1537 if (iwl_is_associated(priv)) {
1538 memcpy(&priv->recovery_rxon, &priv->active_rxon,
1539 sizeof(priv->recovery_rxon));
1540 priv->error_recovering = 1;
1541 }
1542 if (priv->cfg->mod_params->restart_fw)
1543 queue_work(priv->workqueue, &priv->restart);
1544 }
1545 }
1546
1547 static void iwl4965_error_recovery(struct iwl_priv *priv)
1548 {
1549 unsigned long flags;
1550
1551 memcpy(&priv->staging_rxon, &priv->recovery_rxon,
1552 sizeof(priv->staging_rxon));
1553 priv->staging_rxon.filter_flags &= ~RXON_FILTER_ASSOC_MSK;
1554 iwl4965_commit_rxon(priv);
1555
1556 iwl_rxon_add_station(priv, priv->bssid, 1);
1557
1558 spin_lock_irqsave(&priv->lock, flags);
1559 priv->assoc_id = le16_to_cpu(priv->staging_rxon.assoc_id);
1560 priv->error_recovering = 0;
1561 spin_unlock_irqrestore(&priv->lock, flags);
1562 }
1563
1564 static void iwl4965_irq_tasklet(struct iwl_priv *priv)
1565 {
1566 u32 inta, handled = 0;
1567 u32 inta_fh;
1568 unsigned long flags;
1569 #ifdef CONFIG_IWLWIFI_DEBUG
1570 u32 inta_mask;
1571 #endif
1572
1573 spin_lock_irqsave(&priv->lock, flags);
1574
1575 /* Ack/clear/reset pending uCode interrupts.
1576 * Note: Some bits in CSR_INT are "OR" of bits in CSR_FH_INT_STATUS,
1577 * and will clear only when CSR_FH_INT_STATUS gets cleared. */
1578 inta = iwl_read32(priv, CSR_INT);
1579 iwl_write32(priv, CSR_INT, inta);
1580
1581 /* Ack/clear/reset pending flow-handler (DMA) interrupts.
1582 * Any new interrupts that happen after this, either while we're
1583 * in this tasklet, or later, will show up in next ISR/tasklet. */
1584 inta_fh = iwl_read32(priv, CSR_FH_INT_STATUS);
1585 iwl_write32(priv, CSR_FH_INT_STATUS, inta_fh);
1586
1587 #ifdef CONFIG_IWLWIFI_DEBUG
1588 if (priv->debug_level & IWL_DL_ISR) {
1589 /* just for debug */
1590 inta_mask = iwl_read32(priv, CSR_INT_MASK);
1591 IWL_DEBUG_ISR("inta 0x%08x, enabled 0x%08x, fh 0x%08x\n",
1592 inta, inta_mask, inta_fh);
1593 }
1594 #endif
1595
1596 /* Since CSR_INT and CSR_FH_INT_STATUS reads and clears are not
1597 * atomic, make sure that inta covers all the interrupts that
1598 * we've discovered, even if FH interrupt came in just after
1599 * reading CSR_INT. */
1600 if (inta_fh & CSR49_FH_INT_RX_MASK)
1601 inta |= CSR_INT_BIT_FH_RX;
1602 if (inta_fh & CSR49_FH_INT_TX_MASK)
1603 inta |= CSR_INT_BIT_FH_TX;
1604
1605 /* Now service all interrupt bits discovered above. */
1606 if (inta & CSR_INT_BIT_HW_ERR) {
1607 IWL_ERROR("Microcode HW error detected. Restarting.\n");
1608
1609 /* Tell the device to stop sending interrupts */
1610 iwl4965_disable_interrupts(priv);
1611
1612 iwl4965_irq_handle_error(priv);
1613
1614 handled |= CSR_INT_BIT_HW_ERR;
1615
1616 spin_unlock_irqrestore(&priv->lock, flags);
1617
1618 return;
1619 }
1620
1621 #ifdef CONFIG_IWLWIFI_DEBUG
1622 if (priv->debug_level & (IWL_DL_ISR)) {
1623 /* NIC fires this, but we don't use it, redundant with WAKEUP */
1624 if (inta & CSR_INT_BIT_SCD)
1625 IWL_DEBUG_ISR("Scheduler finished to transmit "
1626 "the frame/frames.\n");
1627
1628 /* Alive notification via Rx interrupt will do the real work */
1629 if (inta & CSR_INT_BIT_ALIVE)
1630 IWL_DEBUG_ISR("Alive interrupt\n");
1631 }
1632 #endif
1633 /* Safely ignore these bits for debug checks below */
1634 inta &= ~(CSR_INT_BIT_SCD | CSR_INT_BIT_ALIVE);
1635
1636 /* HW RF KILL switch toggled */
1637 if (inta & CSR_INT_BIT_RF_KILL) {
1638 int hw_rf_kill = 0;
1639 if (!(iwl_read32(priv, CSR_GP_CNTRL) &
1640 CSR_GP_CNTRL_REG_FLAG_HW_RF_KILL_SW))
1641 hw_rf_kill = 1;
1642
1643 IWL_DEBUG(IWL_DL_RF_KILL, "RF_KILL bit toggled to %s.\n",
1644 hw_rf_kill ? "disable radio":"enable radio");
1645
1646 /* driver only loads ucode once setting the interface up.
1647 * the driver as well won't allow loading if RFKILL is set
1648 * therefore no need to restart the driver from this handler
1649 */
1650 if (!hw_rf_kill && !test_bit(STATUS_ALIVE, &priv->status))
1651 clear_bit(STATUS_RF_KILL_HW, &priv->status);
1652
1653 handled |= CSR_INT_BIT_RF_KILL;
1654 }
1655
1656 /* Chip got too hot and stopped itself */
1657 if (inta & CSR_INT_BIT_CT_KILL) {
1658 IWL_ERROR("Microcode CT kill error detected.\n");
1659 handled |= CSR_INT_BIT_CT_KILL;
1660 }
1661
1662 /* Error detected by uCode */
1663 if (inta & CSR_INT_BIT_SW_ERR) {
1664 IWL_ERROR("Microcode SW error detected. Restarting 0x%X.\n",
1665 inta);
1666 iwl4965_irq_handle_error(priv);
1667 handled |= CSR_INT_BIT_SW_ERR;
1668 }
1669
1670 /* uCode wakes up after power-down sleep */
1671 if (inta & CSR_INT_BIT_WAKEUP) {
1672 IWL_DEBUG_ISR("Wakeup interrupt\n");
1673 iwl_rx_queue_update_write_ptr(priv, &priv->rxq);
1674 iwl_txq_update_write_ptr(priv, &priv->txq[0]);
1675 iwl_txq_update_write_ptr(priv, &priv->txq[1]);
1676 iwl_txq_update_write_ptr(priv, &priv->txq[2]);
1677 iwl_txq_update_write_ptr(priv, &priv->txq[3]);
1678 iwl_txq_update_write_ptr(priv, &priv->txq[4]);
1679 iwl_txq_update_write_ptr(priv, &priv->txq[5]);
1680
1681 handled |= CSR_INT_BIT_WAKEUP;
1682 }
1683
1684 /* All uCode command responses, including Tx command responses,
1685 * Rx "responses" (frame-received notification), and other
1686 * notifications from uCode come through here*/
1687 if (inta & (CSR_INT_BIT_FH_RX | CSR_INT_BIT_SW_RX)) {
1688 iwl_rx_handle(priv);
1689 handled |= (CSR_INT_BIT_FH_RX | CSR_INT_BIT_SW_RX);
1690 }
1691
1692 if (inta & CSR_INT_BIT_FH_TX) {
1693 IWL_DEBUG_ISR("Tx interrupt\n");
1694 handled |= CSR_INT_BIT_FH_TX;
1695 /* FH finished to write, send event */
1696 priv->ucode_write_complete = 1;
1697 wake_up_interruptible(&priv->wait_command_queue);
1698 }
1699
1700 if (inta & ~handled)
1701 IWL_ERROR("Unhandled INTA bits 0x%08x\n", inta & ~handled);
1702
1703 if (inta & ~CSR_INI_SET_MASK) {
1704 IWL_WARNING("Disabled INTA bits 0x%08x were pending\n",
1705 inta & ~CSR_INI_SET_MASK);
1706 IWL_WARNING(" with FH_INT = 0x%08x\n", inta_fh);
1707 }
1708
1709 /* Re-enable all interrupts */
1710 /* only Re-enable if diabled by irq */
1711 if (test_bit(STATUS_INT_ENABLED, &priv->status))
1712 iwl4965_enable_interrupts(priv);
1713
1714 #ifdef CONFIG_IWLWIFI_DEBUG
1715 if (priv->debug_level & (IWL_DL_ISR)) {
1716 inta = iwl_read32(priv, CSR_INT);
1717 inta_mask = iwl_read32(priv, CSR_INT_MASK);
1718 inta_fh = iwl_read32(priv, CSR_FH_INT_STATUS);
1719 IWL_DEBUG_ISR("End inta 0x%08x, enabled 0x%08x, fh 0x%08x, "
1720 "flags 0x%08lx\n", inta, inta_mask, inta_fh, flags);
1721 }
1722 #endif
1723 spin_unlock_irqrestore(&priv->lock, flags);
1724 }
1725
1726 static irqreturn_t iwl4965_isr(int irq, void *data)
1727 {
1728 struct iwl_priv *priv = data;
1729 u32 inta, inta_mask;
1730 u32 inta_fh;
1731 if (!priv)
1732 return IRQ_NONE;
1733
1734 spin_lock(&priv->lock);
1735
1736 /* Disable (but don't clear!) interrupts here to avoid
1737 * back-to-back ISRs and sporadic interrupts from our NIC.
1738 * If we have something to service, the tasklet will re-enable ints.
1739 * If we *don't* have something, we'll re-enable before leaving here. */
1740 inta_mask = iwl_read32(priv, CSR_INT_MASK); /* just for debug */
1741 iwl_write32(priv, CSR_INT_MASK, 0x00000000);
1742
1743 /* Discover which interrupts are active/pending */
1744 inta = iwl_read32(priv, CSR_INT);
1745 inta_fh = iwl_read32(priv, CSR_FH_INT_STATUS);
1746
1747 /* Ignore interrupt if there's nothing in NIC to service.
1748 * This may be due to IRQ shared with another device,
1749 * or due to sporadic interrupts thrown from our NIC. */
1750 if (!inta && !inta_fh) {
1751 IWL_DEBUG_ISR("Ignore interrupt, inta == 0, inta_fh == 0\n");
1752 goto none;
1753 }
1754
1755 if ((inta == 0xFFFFFFFF) || ((inta & 0xFFFFFFF0) == 0xa5a5a5a0)) {
1756 /* Hardware disappeared. It might have already raised
1757 * an interrupt */
1758 IWL_WARNING("HARDWARE GONE?? INTA == 0x%080x\n", inta);
1759 goto unplugged;
1760 }
1761
1762 IWL_DEBUG_ISR("ISR inta 0x%08x, enabled 0x%08x, fh 0x%08x\n",
1763 inta, inta_mask, inta_fh);
1764
1765 inta &= ~CSR_INT_BIT_SCD;
1766
1767 /* iwl4965_irq_tasklet() will service interrupts and re-enable them */
1768 if (likely(inta || inta_fh))
1769 tasklet_schedule(&priv->irq_tasklet);
1770
1771 unplugged:
1772 spin_unlock(&priv->lock);
1773 return IRQ_HANDLED;
1774
1775 none:
1776 /* re-enable interrupts here since we don't have anything to service. */
1777 /* only Re-enable if diabled by irq */
1778 if (test_bit(STATUS_INT_ENABLED, &priv->status))
1779 iwl4965_enable_interrupts(priv);
1780 spin_unlock(&priv->lock);
1781 return IRQ_NONE;
1782 }
1783
1784 /******************************************************************************
1785 *
1786 * uCode download functions
1787 *
1788 ******************************************************************************/
1789
1790 static void iwl4965_dealloc_ucode_pci(struct iwl_priv *priv)
1791 {
1792 iwl_free_fw_desc(priv->pci_dev, &priv->ucode_code);
1793 iwl_free_fw_desc(priv->pci_dev, &priv->ucode_data);
1794 iwl_free_fw_desc(priv->pci_dev, &priv->ucode_data_backup);
1795 iwl_free_fw_desc(priv->pci_dev, &priv->ucode_init);
1796 iwl_free_fw_desc(priv->pci_dev, &priv->ucode_init_data);
1797 iwl_free_fw_desc(priv->pci_dev, &priv->ucode_boot);
1798 }
1799
1800 static void iwl4965_nic_start(struct iwl_priv *priv)
1801 {
1802 /* Remove all resets to allow NIC to operate */
1803 iwl_write32(priv, CSR_RESET, 0);
1804 }
1805
1806
1807 /**
1808 * iwl4965_read_ucode - Read uCode images from disk file.
1809 *
1810 * Copy into buffers for card to fetch via bus-mastering
1811 */
1812 static int iwl4965_read_ucode(struct iwl_priv *priv)
1813 {
1814 struct iwl_ucode *ucode;
1815 int ret;
1816 const struct firmware *ucode_raw;
1817 const char *name = priv->cfg->fw_name;
1818 u8 *src;
1819 size_t len;
1820 u32 ver, inst_size, data_size, init_size, init_data_size, boot_size;
1821
1822 /* Ask kernel firmware_class module to get the boot firmware off disk.
1823 * request_firmware() is synchronous, file is in memory on return. */
1824 ret = request_firmware(&ucode_raw, name, &priv->pci_dev->dev);
1825 if (ret < 0) {
1826 IWL_ERROR("%s firmware file req failed: Reason %d\n",
1827 name, ret);
1828 goto error;
1829 }
1830
1831 IWL_DEBUG_INFO("Got firmware '%s' file (%zd bytes) from disk\n",
1832 name, ucode_raw->size);
1833
1834 /* Make sure that we got at least our header! */
1835 if (ucode_raw->size < sizeof(*ucode)) {
1836 IWL_ERROR("File size way too small!\n");
1837 ret = -EINVAL;
1838 goto err_release;
1839 }
1840
1841 /* Data from ucode file: header followed by uCode images */
1842 ucode = (void *)ucode_raw->data;
1843
1844 ver = le32_to_cpu(ucode->ver);
1845 inst_size = le32_to_cpu(ucode->inst_size);
1846 data_size = le32_to_cpu(ucode->data_size);
1847 init_size = le32_to_cpu(ucode->init_size);
1848 init_data_size = le32_to_cpu(ucode->init_data_size);
1849 boot_size = le32_to_cpu(ucode->boot_size);
1850
1851 IWL_DEBUG_INFO("f/w package hdr ucode version = 0x%x\n", ver);
1852 IWL_DEBUG_INFO("f/w package hdr runtime inst size = %u\n",
1853 inst_size);
1854 IWL_DEBUG_INFO("f/w package hdr runtime data size = %u\n",
1855 data_size);
1856 IWL_DEBUG_INFO("f/w package hdr init inst size = %u\n",
1857 init_size);
1858 IWL_DEBUG_INFO("f/w package hdr init data size = %u\n",
1859 init_data_size);
1860 IWL_DEBUG_INFO("f/w package hdr boot inst size = %u\n",
1861 boot_size);
1862
1863 /* Verify size of file vs. image size info in file's header */
1864 if (ucode_raw->size < sizeof(*ucode) +
1865 inst_size + data_size + init_size +
1866 init_data_size + boot_size) {
1867
1868 IWL_DEBUG_INFO("uCode file size %d too small\n",
1869 (int)ucode_raw->size);
1870 ret = -EINVAL;
1871 goto err_release;
1872 }
1873
1874 /* Verify that uCode images will fit in card's SRAM */
1875 if (inst_size > priv->hw_params.max_inst_size) {
1876 IWL_DEBUG_INFO("uCode instr len %d too large to fit in\n",
1877 inst_size);
1878 ret = -EINVAL;
1879 goto err_release;
1880 }
1881
1882 if (data_size > priv->hw_params.max_data_size) {
1883 IWL_DEBUG_INFO("uCode data len %d too large to fit in\n",
1884 data_size);
1885 ret = -EINVAL;
1886 goto err_release;
1887 }
1888 if (init_size > priv->hw_params.max_inst_size) {
1889 IWL_DEBUG_INFO
1890 ("uCode init instr len %d too large to fit in\n",
1891 init_size);
1892 ret = -EINVAL;
1893 goto err_release;
1894 }
1895 if (init_data_size > priv->hw_params.max_data_size) {
1896 IWL_DEBUG_INFO
1897 ("uCode init data len %d too large to fit in\n",
1898 init_data_size);
1899 ret = -EINVAL;
1900 goto err_release;
1901 }
1902 if (boot_size > priv->hw_params.max_bsm_size) {
1903 IWL_DEBUG_INFO
1904 ("uCode boot instr len %d too large to fit in\n",
1905 boot_size);
1906 ret = -EINVAL;
1907 goto err_release;
1908 }
1909
1910 /* Allocate ucode buffers for card's bus-master loading ... */
1911
1912 /* Runtime instructions and 2 copies of data:
1913 * 1) unmodified from disk
1914 * 2) backup cache for save/restore during power-downs */
1915 priv->ucode_code.len = inst_size;
1916 iwl_alloc_fw_desc(priv->pci_dev, &priv->ucode_code);
1917
1918 priv->ucode_data.len = data_size;
1919 iwl_alloc_fw_desc(priv->pci_dev, &priv->ucode_data);
1920
1921 priv->ucode_data_backup.len = data_size;
1922 iwl_alloc_fw_desc(priv->pci_dev, &priv->ucode_data_backup);
1923
1924 /* Initialization instructions and data */
1925 if (init_size && init_data_size) {
1926 priv->ucode_init.len = init_size;
1927 iwl_alloc_fw_desc(priv->pci_dev, &priv->ucode_init);
1928
1929 priv->ucode_init_data.len = init_data_size;
1930 iwl_alloc_fw_desc(priv->pci_dev, &priv->ucode_init_data);
1931
1932 if (!priv->ucode_init.v_addr || !priv->ucode_init_data.v_addr)
1933 goto err_pci_alloc;
1934 }
1935
1936 /* Bootstrap (instructions only, no data) */
1937 if (boot_size) {
1938 priv->ucode_boot.len = boot_size;
1939 iwl_alloc_fw_desc(priv->pci_dev, &priv->ucode_boot);
1940
1941 if (!priv->ucode_boot.v_addr)
1942 goto err_pci_alloc;
1943 }
1944
1945 /* Copy images into buffers for card's bus-master reads ... */
1946
1947 /* Runtime instructions (first block of data in file) */
1948 src = &ucode->data[0];
1949 len = priv->ucode_code.len;
1950 IWL_DEBUG_INFO("Copying (but not loading) uCode instr len %Zd\n", len);
1951 memcpy(priv->ucode_code.v_addr, src, len);
1952 IWL_DEBUG_INFO("uCode instr buf vaddr = 0x%p, paddr = 0x%08x\n",
1953 priv->ucode_code.v_addr, (u32)priv->ucode_code.p_addr);
1954
1955 /* Runtime data (2nd block)
1956 * NOTE: Copy into backup buffer will be done in iwl4965_up() */
1957 src = &ucode->data[inst_size];
1958 len = priv->ucode_data.len;
1959 IWL_DEBUG_INFO("Copying (but not loading) uCode data len %Zd\n", len);
1960 memcpy(priv->ucode_data.v_addr, src, len);
1961 memcpy(priv->ucode_data_backup.v_addr, src, len);
1962
1963 /* Initialization instructions (3rd block) */
1964 if (init_size) {
1965 src = &ucode->data[inst_size + data_size];
1966 len = priv->ucode_init.len;
1967 IWL_DEBUG_INFO("Copying (but not loading) init instr len %Zd\n",
1968 len);
1969 memcpy(priv->ucode_init.v_addr, src, len);
1970 }
1971
1972 /* Initialization data (4th block) */
1973 if (init_data_size) {
1974 src = &ucode->data[inst_size + data_size + init_size];
1975 len = priv->ucode_init_data.len;
1976 IWL_DEBUG_INFO("Copying (but not loading) init data len %Zd\n",
1977 len);
1978 memcpy(priv->ucode_init_data.v_addr, src, len);
1979 }
1980
1981 /* Bootstrap instructions (5th block) */
1982 src = &ucode->data[inst_size + data_size + init_size + init_data_size];
1983 len = priv->ucode_boot.len;
1984 IWL_DEBUG_INFO("Copying (but not loading) boot instr len %Zd\n", len);
1985 memcpy(priv->ucode_boot.v_addr, src, len);
1986
1987 /* We have our copies now, allow OS release its copies */
1988 release_firmware(ucode_raw);
1989 return 0;
1990
1991 err_pci_alloc:
1992 IWL_ERROR("failed to allocate pci memory\n");
1993 ret = -ENOMEM;
1994 iwl4965_dealloc_ucode_pci(priv);
1995
1996 err_release:
1997 release_firmware(ucode_raw);
1998
1999 error:
2000 return ret;
2001 }
2002
2003 /**
2004 * iwl_alive_start - called after REPLY_ALIVE notification received
2005 * from protocol/runtime uCode (initialization uCode's
2006 * Alive gets handled by iwl_init_alive_start()).
2007 */
2008 static void iwl_alive_start(struct iwl_priv *priv)
2009 {
2010 int ret = 0;
2011
2012 IWL_DEBUG_INFO("Runtime Alive received.\n");
2013
2014 if (priv->card_alive.is_valid != UCODE_VALID_OK) {
2015 /* We had an error bringing up the hardware, so take it
2016 * all the way back down so we can try again */
2017 IWL_DEBUG_INFO("Alive failed.\n");
2018 goto restart;
2019 }
2020
2021 /* Initialize uCode has loaded Runtime uCode ... verify inst image.
2022 * This is a paranoid check, because we would not have gotten the
2023 * "runtime" alive if code weren't properly loaded. */
2024 if (iwl_verify_ucode(priv)) {
2025 /* Runtime instruction load was bad;
2026 * take it all the way back down so we can try again */
2027 IWL_DEBUG_INFO("Bad runtime uCode load.\n");
2028 goto restart;
2029 }
2030
2031 iwl_clear_stations_table(priv);
2032 ret = priv->cfg->ops->lib->alive_notify(priv);
2033 if (ret) {
2034 IWL_WARNING("Could not complete ALIVE transition [ntf]: %d\n",
2035 ret);
2036 goto restart;
2037 }
2038
2039 /* After the ALIVE response, we can send host commands to 4965 uCode */
2040 set_bit(STATUS_ALIVE, &priv->status);
2041
2042 if (iwl_is_rfkill(priv))
2043 return;
2044
2045 ieee80211_wake_queues(priv->hw);
2046
2047 priv->active_rate = priv->rates_mask;
2048 priv->active_rate_basic = priv->rates_mask & IWL_BASIC_RATES_MASK;
2049
2050 if (iwl_is_associated(priv)) {
2051 struct iwl_rxon_cmd *active_rxon =
2052 (struct iwl_rxon_cmd *)&priv->active_rxon;
2053
2054 memcpy(&priv->staging_rxon, &priv->active_rxon,
2055 sizeof(priv->staging_rxon));
2056 active_rxon->filter_flags &= ~RXON_FILTER_ASSOC_MSK;
2057 } else {
2058 /* Initialize our rx_config data */
2059 iwl4965_connection_init_rx_config(priv);
2060 memcpy(priv->staging_rxon.node_addr, priv->mac_addr, ETH_ALEN);
2061 }
2062
2063 /* Configure Bluetooth device coexistence support */
2064 iwl4965_send_bt_config(priv);
2065
2066 iwl_reset_run_time_calib(priv);
2067
2068 /* Configure the adapter for unassociated operation */
2069 iwl4965_commit_rxon(priv);
2070
2071 /* At this point, the NIC is initialized and operational */
2072 iwl_rf_kill_ct_config(priv);
2073
2074 iwl_leds_register(priv);
2075
2076 IWL_DEBUG_INFO("ALIVE processing complete.\n");
2077 set_bit(STATUS_READY, &priv->status);
2078 wake_up_interruptible(&priv->wait_command_queue);
2079
2080 if (priv->error_recovering)
2081 iwl4965_error_recovery(priv);
2082
2083 iwl_power_update_mode(priv, 1);
2084
2085 if (test_and_clear_bit(STATUS_MODE_PENDING, &priv->status))
2086 iwl4965_set_mode(priv, priv->iw_mode);
2087
2088 return;
2089
2090 restart:
2091 queue_work(priv->workqueue, &priv->restart);
2092 }
2093
2094 static void iwl_cancel_deferred_work(struct iwl_priv *priv);
2095
2096 static void __iwl4965_down(struct iwl_priv *priv)
2097 {
2098 unsigned long flags;
2099 int exit_pending = test_bit(STATUS_EXIT_PENDING, &priv->status);
2100
2101 IWL_DEBUG_INFO(DRV_NAME " is going down\n");
2102
2103 if (!exit_pending)
2104 set_bit(STATUS_EXIT_PENDING, &priv->status);
2105
2106 iwl_leds_unregister(priv);
2107
2108 iwl_clear_stations_table(priv);
2109
2110 /* Unblock any waiting calls */
2111 wake_up_interruptible_all(&priv->wait_command_queue);
2112
2113 /* Wipe out the EXIT_PENDING status bit if we are not actually
2114 * exiting the module */
2115 if (!exit_pending)
2116 clear_bit(STATUS_EXIT_PENDING, &priv->status);
2117
2118 /* stop and reset the on-board processor */
2119 iwl_write32(priv, CSR_RESET, CSR_RESET_REG_FLAG_NEVO_RESET);
2120
2121 /* tell the device to stop sending interrupts */
2122 spin_lock_irqsave(&priv->lock, flags);
2123 iwl4965_disable_interrupts(priv);
2124 spin_unlock_irqrestore(&priv->lock, flags);
2125 iwl_synchronize_irq(priv);
2126
2127 if (priv->mac80211_registered)
2128 ieee80211_stop_queues(priv->hw);
2129
2130 /* If we have not previously called iwl4965_init() then
2131 * clear all bits but the RF Kill and SUSPEND bits and return */
2132 if (!iwl_is_init(priv)) {
2133 priv->status = test_bit(STATUS_RF_KILL_HW, &priv->status) <<
2134 STATUS_RF_KILL_HW |
2135 test_bit(STATUS_RF_KILL_SW, &priv->status) <<
2136 STATUS_RF_KILL_SW |
2137 test_bit(STATUS_GEO_CONFIGURED, &priv->status) <<
2138 STATUS_GEO_CONFIGURED |
2139 test_bit(STATUS_IN_SUSPEND, &priv->status) <<
2140 STATUS_IN_SUSPEND |
2141 test_bit(STATUS_EXIT_PENDING, &priv->status) <<
2142 STATUS_EXIT_PENDING;
2143 goto exit;
2144 }
2145
2146 /* ...otherwise clear out all the status bits but the RF Kill and
2147 * SUSPEND bits and continue taking the NIC down. */
2148 priv->status &= test_bit(STATUS_RF_KILL_HW, &priv->status) <<
2149 STATUS_RF_KILL_HW |
2150 test_bit(STATUS_RF_KILL_SW, &priv->status) <<
2151 STATUS_RF_KILL_SW |
2152 test_bit(STATUS_GEO_CONFIGURED, &priv->status) <<
2153 STATUS_GEO_CONFIGURED |
2154 test_bit(STATUS_IN_SUSPEND, &priv->status) <<
2155 STATUS_IN_SUSPEND |
2156 test_bit(STATUS_FW_ERROR, &priv->status) <<
2157 STATUS_FW_ERROR |
2158 test_bit(STATUS_EXIT_PENDING, &priv->status) <<
2159 STATUS_EXIT_PENDING;
2160
2161 spin_lock_irqsave(&priv->lock, flags);
2162 iwl_clear_bit(priv, CSR_GP_CNTRL,
2163 CSR_GP_CNTRL_REG_FLAG_MAC_ACCESS_REQ);
2164 spin_unlock_irqrestore(&priv->lock, flags);
2165
2166 iwl_txq_ctx_stop(priv);
2167 iwl_rxq_stop(priv);
2168
2169 spin_lock_irqsave(&priv->lock, flags);
2170 if (!iwl_grab_nic_access(priv)) {
2171 iwl_write_prph(priv, APMG_CLK_DIS_REG,
2172 APMG_CLK_VAL_DMA_CLK_RQT);
2173 iwl_release_nic_access(priv);
2174 }
2175 spin_unlock_irqrestore(&priv->lock, flags);
2176
2177 udelay(5);
2178
2179 /* FIXME: apm_ops.suspend(priv) */
2180 if (exit_pending || test_bit(STATUS_IN_SUSPEND, &priv->status))
2181 priv->cfg->ops->lib->apm_ops.stop(priv);
2182 else
2183 priv->cfg->ops->lib->apm_ops.reset(priv);
2184 priv->cfg->ops->lib->free_shared_mem(priv);
2185
2186 exit:
2187 memset(&priv->card_alive, 0, sizeof(struct iwl_alive_resp));
2188
2189 if (priv->ibss_beacon)
2190 dev_kfree_skb(priv->ibss_beacon);
2191 priv->ibss_beacon = NULL;
2192
2193 /* clear out any free frames */
2194 iwl_clear_free_frames(priv);
2195 }
2196
2197 static void iwl4965_down(struct iwl_priv *priv)
2198 {
2199 mutex_lock(&priv->mutex);
2200 __iwl4965_down(priv);
2201 mutex_unlock(&priv->mutex);
2202
2203 iwl_cancel_deferred_work(priv);
2204 }
2205
2206 #define MAX_HW_RESTARTS 5
2207
2208 static int __iwl4965_up(struct iwl_priv *priv)
2209 {
2210 int i;
2211 int ret;
2212
2213 if (test_bit(STATUS_EXIT_PENDING, &priv->status)) {
2214 IWL_WARNING("Exit pending; will not bring the NIC up\n");
2215 return -EIO;
2216 }
2217
2218 if (!priv->ucode_data_backup.v_addr || !priv->ucode_data.v_addr) {
2219 IWL_ERROR("ucode not available for device bringup\n");
2220 return -EIO;
2221 }
2222
2223 /* If platform's RF_KILL switch is NOT set to KILL */
2224 if (iwl_read32(priv, CSR_GP_CNTRL) & CSR_GP_CNTRL_REG_FLAG_HW_RF_KILL_SW)
2225 clear_bit(STATUS_RF_KILL_HW, &priv->status);
2226 else
2227 set_bit(STATUS_RF_KILL_HW, &priv->status);
2228
2229 if (iwl_is_rfkill(priv)) {
2230 iwl4965_enable_interrupts(priv);
2231 IWL_WARNING("Radio disabled by %s RF Kill switch\n",
2232 test_bit(STATUS_RF_KILL_HW, &priv->status) ? "HW" : "SW");
2233 return 0;
2234 }
2235
2236 iwl_write32(priv, CSR_INT, 0xFFFFFFFF);
2237
2238 ret = priv->cfg->ops->lib->alloc_shared_mem(priv);
2239 if (ret) {
2240 IWL_ERROR("Unable to allocate shared memory\n");
2241 return ret;
2242 }
2243
2244 ret = iwl_hw_nic_init(priv);
2245 if (ret) {
2246 IWL_ERROR("Unable to init nic\n");
2247 return ret;
2248 }
2249
2250 /* make sure rfkill handshake bits are cleared */
2251 iwl_write32(priv, CSR_UCODE_DRV_GP1_CLR, CSR_UCODE_SW_BIT_RFKILL);
2252 iwl_write32(priv, CSR_UCODE_DRV_GP1_CLR,
2253 CSR_UCODE_DRV_GP1_BIT_CMD_BLOCKED);
2254
2255 /* clear (again), then enable host interrupts */
2256 iwl_write32(priv, CSR_INT, 0xFFFFFFFF);
2257 iwl4965_enable_interrupts(priv);
2258
2259 /* really make sure rfkill handshake bits are cleared */
2260 iwl_write32(priv, CSR_UCODE_DRV_GP1_CLR, CSR_UCODE_SW_BIT_RFKILL);
2261 iwl_write32(priv, CSR_UCODE_DRV_GP1_CLR, CSR_UCODE_SW_BIT_RFKILL);
2262
2263 /* Copy original ucode data image from disk into backup cache.
2264 * This will be used to initialize the on-board processor's
2265 * data SRAM for a clean start when the runtime program first loads. */
2266 memcpy(priv->ucode_data_backup.v_addr, priv->ucode_data.v_addr,
2267 priv->ucode_data.len);
2268
2269 for (i = 0; i < MAX_HW_RESTARTS; i++) {
2270
2271 iwl_clear_stations_table(priv);
2272
2273 /* load bootstrap state machine,
2274 * load bootstrap program into processor's memory,
2275 * prepare to load the "initialize" uCode */
2276 ret = priv->cfg->ops->lib->load_ucode(priv);
2277
2278 if (ret) {
2279 IWL_ERROR("Unable to set up bootstrap uCode: %d\n", ret);
2280 continue;
2281 }
2282
2283 /* Clear out the uCode error bit if it is set */
2284 clear_bit(STATUS_FW_ERROR, &priv->status);
2285
2286 /* start card; "initialize" will load runtime ucode */
2287 iwl4965_nic_start(priv);
2288
2289 IWL_DEBUG_INFO(DRV_NAME " is coming up\n");
2290
2291 return 0;
2292 }
2293
2294 set_bit(STATUS_EXIT_PENDING, &priv->status);
2295 __iwl4965_down(priv);
2296 clear_bit(STATUS_EXIT_PENDING, &priv->status);
2297
2298 /* tried to restart and config the device for as long as our
2299 * patience could withstand */
2300 IWL_ERROR("Unable to initialize device after %d attempts.\n", i);
2301 return -EIO;
2302 }
2303
2304
2305 /*****************************************************************************
2306 *
2307 * Workqueue callbacks
2308 *
2309 *****************************************************************************/
2310
2311 static void iwl_bg_init_alive_start(struct work_struct *data)
2312 {
2313 struct iwl_priv *priv =
2314 container_of(data, struct iwl_priv, init_alive_start.work);
2315
2316 if (test_bit(STATUS_EXIT_PENDING, &priv->status))
2317 return;
2318
2319 mutex_lock(&priv->mutex);
2320 priv->cfg->ops->lib->init_alive_start(priv);
2321 mutex_unlock(&priv->mutex);
2322 }
2323
2324 static void iwl_bg_alive_start(struct work_struct *data)
2325 {
2326 struct iwl_priv *priv =
2327 container_of(data, struct iwl_priv, alive_start.work);
2328
2329 if (test_bit(STATUS_EXIT_PENDING, &priv->status))
2330 return;
2331
2332 mutex_lock(&priv->mutex);
2333 iwl_alive_start(priv);
2334 mutex_unlock(&priv->mutex);
2335 ieee80211_notify_mac(priv->hw, IEEE80211_NOTIFY_RE_ASSOC);
2336 }
2337
2338 static void iwl4965_bg_rf_kill(struct work_struct *work)
2339 {
2340 struct iwl_priv *priv = container_of(work, struct iwl_priv, rf_kill);
2341
2342 wake_up_interruptible(&priv->wait_command_queue);
2343
2344 if (test_bit(STATUS_EXIT_PENDING, &priv->status))
2345 return;
2346
2347 mutex_lock(&priv->mutex);
2348
2349 if (!iwl_is_rfkill(priv)) {
2350 IWL_DEBUG(IWL_DL_RF_KILL,
2351 "HW and/or SW RF Kill no longer active, restarting "
2352 "device\n");
2353 if (!test_bit(STATUS_EXIT_PENDING, &priv->status))
2354 queue_work(priv->workqueue, &priv->restart);
2355 } else {
2356 /* make sure mac80211 stop sending Tx frame */
2357 if (priv->mac80211_registered)
2358 ieee80211_stop_queues(priv->hw);
2359
2360 if (!test_bit(STATUS_RF_KILL_HW, &priv->status))
2361 IWL_DEBUG_RF_KILL("Can not turn radio back on - "
2362 "disabled by SW switch\n");
2363 else
2364 IWL_WARNING("Radio Frequency Kill Switch is On:\n"
2365 "Kill switch must be turned off for "
2366 "wireless networking to work.\n");
2367 }
2368 mutex_unlock(&priv->mutex);
2369 iwl_rfkill_set_hw_state(priv);
2370 }
2371
2372 static void iwl4965_bg_set_monitor(struct work_struct *work)
2373 {
2374 struct iwl_priv *priv = container_of(work,
2375 struct iwl_priv, set_monitor);
2376 int ret;
2377
2378 IWL_DEBUG(IWL_DL_STATE, "setting monitor mode\n");
2379
2380 mutex_lock(&priv->mutex);
2381
2382 ret = iwl4965_set_mode(priv, NL80211_IFTYPE_MONITOR);
2383
2384 if (ret) {
2385 if (ret == -EAGAIN)
2386 IWL_DEBUG(IWL_DL_STATE, "leave - not ready\n");
2387 else
2388 IWL_ERROR("iwl4965_set_mode() failed ret = %d\n", ret);
2389 }
2390
2391 mutex_unlock(&priv->mutex);
2392 }
2393
2394 static void iwl_bg_run_time_calib_work(struct work_struct *work)
2395 {
2396 struct iwl_priv *priv = container_of(work, struct iwl_priv,
2397 run_time_calib_work);
2398
2399 mutex_lock(&priv->mutex);
2400
2401 if (test_bit(STATUS_EXIT_PENDING, &priv->status) ||
2402 test_bit(STATUS_SCANNING, &priv->status)) {
2403 mutex_unlock(&priv->mutex);
2404 return;
2405 }
2406
2407 if (priv->start_calib) {
2408 iwl_chain_noise_calibration(priv, &priv->statistics);
2409
2410 iwl_sensitivity_calibration(priv, &priv->statistics);
2411 }
2412
2413 mutex_unlock(&priv->mutex);
2414 return;
2415 }
2416
2417 static void iwl4965_bg_up(struct work_struct *data)
2418 {
2419 struct iwl_priv *priv = container_of(data, struct iwl_priv, up);
2420
2421 if (test_bit(STATUS_EXIT_PENDING, &priv->status))
2422 return;
2423
2424 mutex_lock(&priv->mutex);
2425 __iwl4965_up(priv);
2426 mutex_unlock(&priv->mutex);
2427 iwl_rfkill_set_hw_state(priv);
2428 }
2429
2430 static void iwl4965_bg_restart(struct work_struct *data)
2431 {
2432 struct iwl_priv *priv = container_of(data, struct iwl_priv, restart);
2433
2434 if (test_bit(STATUS_EXIT_PENDING, &priv->status))
2435 return;
2436
2437 iwl4965_down(priv);
2438 queue_work(priv->workqueue, &priv->up);
2439 }
2440
2441 static void iwl4965_bg_rx_replenish(struct work_struct *data)
2442 {
2443 struct iwl_priv *priv =
2444 container_of(data, struct iwl_priv, rx_replenish);
2445
2446 if (test_bit(STATUS_EXIT_PENDING, &priv->status))
2447 return;
2448
2449 mutex_lock(&priv->mutex);
2450 iwl_rx_replenish(priv);
2451 mutex_unlock(&priv->mutex);
2452 }
2453
2454 #define IWL_DELAY_NEXT_SCAN (HZ*2)
2455
2456 static void iwl4965_post_associate(struct iwl_priv *priv)
2457 {
2458 struct ieee80211_conf *conf = NULL;
2459 int ret = 0;
2460 unsigned long flags;
2461
2462 if (priv->iw_mode == NL80211_IFTYPE_AP) {
2463 IWL_ERROR("%s Should not be called in AP mode\n", __func__);
2464 return;
2465 }
2466
2467 IWL_DEBUG_ASSOC("Associated as %d to: %pM\n",
2468 priv->assoc_id, priv->active_rxon.bssid_addr);
2469
2470
2471 if (test_bit(STATUS_EXIT_PENDING, &priv->status))
2472 return;
2473
2474
2475 if (!priv->vif || !priv->is_open)
2476 return;
2477
2478 iwl_power_cancel_timeout(priv);
2479 iwl_scan_cancel_timeout(priv, 200);
2480
2481 conf = ieee80211_get_hw_conf(priv->hw);
2482
2483 priv->staging_rxon.filter_flags &= ~RXON_FILTER_ASSOC_MSK;
2484 iwl4965_commit_rxon(priv);
2485
2486 iwl_setup_rxon_timing(priv);
2487 ret = iwl_send_cmd_pdu(priv, REPLY_RXON_TIMING,
2488 sizeof(priv->rxon_timing), &priv->rxon_timing);
2489 if (ret)
2490 IWL_WARNING("REPLY_RXON_TIMING failed - "
2491 "Attempting to continue.\n");
2492
2493 priv->staging_rxon.filter_flags |= RXON_FILTER_ASSOC_MSK;
2494
2495 iwl_set_rxon_ht(priv, &priv->current_ht_config);
2496
2497 iwl_set_rxon_chain(priv);
2498 priv->staging_rxon.assoc_id = cpu_to_le16(priv->assoc_id);
2499
2500 IWL_DEBUG_ASSOC("assoc id %d beacon interval %d\n",
2501 priv->assoc_id, priv->beacon_int);
2502
2503 if (priv->assoc_capability & WLAN_CAPABILITY_SHORT_PREAMBLE)
2504 priv->staging_rxon.flags |= RXON_FLG_SHORT_PREAMBLE_MSK;
2505 else
2506 priv->staging_rxon.flags &= ~RXON_FLG_SHORT_PREAMBLE_MSK;
2507
2508 if (priv->staging_rxon.flags & RXON_FLG_BAND_24G_MSK) {
2509 if (priv->assoc_capability & WLAN_CAPABILITY_SHORT_SLOT_TIME)
2510 priv->staging_rxon.flags |= RXON_FLG_SHORT_SLOT_MSK;
2511 else
2512 priv->staging_rxon.flags &= ~RXON_FLG_SHORT_SLOT_MSK;
2513
2514 if (priv->iw_mode == NL80211_IFTYPE_ADHOC)
2515 priv->staging_rxon.flags &= ~RXON_FLG_SHORT_SLOT_MSK;
2516
2517 }
2518
2519 iwl4965_commit_rxon(priv);
2520
2521 switch (priv->iw_mode) {
2522 case NL80211_IFTYPE_STATION:
2523 break;
2524
2525 case NL80211_IFTYPE_ADHOC:
2526
2527 /* assume default assoc id */
2528 priv->assoc_id = 1;
2529
2530 iwl_rxon_add_station(priv, priv->bssid, 0);
2531 iwl4965_send_beacon_cmd(priv);
2532
2533 break;
2534
2535 default:
2536 IWL_ERROR("%s Should not be called in %d mode\n",
2537 __func__, priv->iw_mode);
2538 break;
2539 }
2540
2541 if (priv->iw_mode == NL80211_IFTYPE_ADHOC)
2542 priv->assoc_station_added = 1;
2543
2544 spin_lock_irqsave(&priv->lock, flags);
2545 iwl_activate_qos(priv, 0);
2546 spin_unlock_irqrestore(&priv->lock, flags);
2547
2548 /* the chain noise calibration will enabled PM upon completion
2549 * If chain noise has already been run, then we need to enable
2550 * power management here */
2551 if (priv->chain_noise_data.state == IWL_CHAIN_NOISE_DONE)
2552 iwl_power_enable_management(priv);
2553
2554 /* Enable Rx differential gain and sensitivity calibrations */
2555 iwl_chain_noise_reset(priv);
2556 priv->start_calib = 1;
2557
2558 }
2559
2560 /*****************************************************************************
2561 *
2562 * mac80211 entry point functions
2563 *
2564 *****************************************************************************/
2565
2566 #define UCODE_READY_TIMEOUT (4 * HZ)
2567
2568 static int iwl4965_mac_start(struct ieee80211_hw *hw)
2569 {
2570 struct iwl_priv *priv = hw->priv;
2571 int ret;
2572 u16 pci_cmd;
2573
2574 IWL_DEBUG_MAC80211("enter\n");
2575
2576 if (pci_enable_device(priv->pci_dev)) {
2577 IWL_ERROR("Fail to pci_enable_device\n");
2578 return -ENODEV;
2579 }
2580 pci_restore_state(priv->pci_dev);
2581 pci_enable_msi(priv->pci_dev);
2582
2583 /* enable interrupts if needed: hw bug w/a */
2584 pci_read_config_word(priv->pci_dev, PCI_COMMAND, &pci_cmd);
2585 if (pci_cmd & PCI_COMMAND_INTX_DISABLE) {
2586 pci_cmd &= ~PCI_COMMAND_INTX_DISABLE;
2587 pci_write_config_word(priv->pci_dev, PCI_COMMAND, pci_cmd);
2588 }
2589
2590 ret = request_irq(priv->pci_dev->irq, iwl4965_isr, IRQF_SHARED,
2591 DRV_NAME, priv);
2592 if (ret) {
2593 IWL_ERROR("Error allocating IRQ %d\n", priv->pci_dev->irq);
2594 goto out_disable_msi;
2595 }
2596
2597 /* we should be verifying the device is ready to be opened */
2598 mutex_lock(&priv->mutex);
2599
2600 memset(&priv->staging_rxon, 0, sizeof(struct iwl_rxon_cmd));
2601 /* fetch ucode file from disk, alloc and copy to bus-master buffers ...
2602 * ucode filename and max sizes are card-specific. */
2603
2604 if (!priv->ucode_code.len) {
2605 ret = iwl4965_read_ucode(priv);
2606 if (ret) {
2607 IWL_ERROR("Could not read microcode: %d\n", ret);
2608 mutex_unlock(&priv->mutex);
2609 goto out_release_irq;
2610 }
2611 }
2612
2613 ret = __iwl4965_up(priv);
2614
2615 mutex_unlock(&priv->mutex);
2616
2617 iwl_rfkill_set_hw_state(priv);
2618
2619 if (ret)
2620 goto out_release_irq;
2621
2622 if (iwl_is_rfkill(priv))
2623 goto out;
2624
2625 IWL_DEBUG_INFO("Start UP work done.\n");
2626
2627 if (test_bit(STATUS_IN_SUSPEND, &priv->status))
2628 return 0;
2629
2630 /* Wait for START_ALIVE from Run Time ucode. Otherwise callbacks from
2631 * mac80211 will not be run successfully. */
2632 ret = wait_event_interruptible_timeout(priv->wait_command_queue,
2633 test_bit(STATUS_READY, &priv->status),
2634 UCODE_READY_TIMEOUT);
2635 if (!ret) {
2636 if (!test_bit(STATUS_READY, &priv->status)) {
2637 IWL_ERROR("START_ALIVE timeout after %dms.\n",
2638 jiffies_to_msecs(UCODE_READY_TIMEOUT));
2639 ret = -ETIMEDOUT;
2640 goto out_release_irq;
2641 }
2642 }
2643
2644 out:
2645 priv->is_open = 1;
2646 IWL_DEBUG_MAC80211("leave\n");
2647 return 0;
2648
2649 out_release_irq:
2650 free_irq(priv->pci_dev->irq, priv);
2651 out_disable_msi:
2652 pci_disable_msi(priv->pci_dev);
2653 pci_disable_device(priv->pci_dev);
2654 priv->is_open = 0;
2655 IWL_DEBUG_MAC80211("leave - failed\n");
2656 return ret;
2657 }
2658
2659 static void iwl4965_mac_stop(struct ieee80211_hw *hw)
2660 {
2661 struct iwl_priv *priv = hw->priv;
2662
2663 IWL_DEBUG_MAC80211("enter\n");
2664
2665 if (!priv->is_open) {
2666 IWL_DEBUG_MAC80211("leave - skip\n");
2667 return;
2668 }
2669
2670 priv->is_open = 0;
2671
2672 if (iwl_is_ready_rf(priv)) {
2673 /* stop mac, cancel any scan request and clear
2674 * RXON_FILTER_ASSOC_MSK BIT
2675 */
2676 mutex_lock(&priv->mutex);
2677 iwl_scan_cancel_timeout(priv, 100);
2678 mutex_unlock(&priv->mutex);
2679 }
2680
2681 iwl4965_down(priv);
2682
2683 flush_workqueue(priv->workqueue);
2684 free_irq(priv->pci_dev->irq, priv);
2685 pci_disable_msi(priv->pci_dev);
2686 pci_save_state(priv->pci_dev);
2687 pci_disable_device(priv->pci_dev);
2688
2689 IWL_DEBUG_MAC80211("leave\n");
2690 }
2691
2692 static int iwl4965_mac_tx(struct ieee80211_hw *hw, struct sk_buff *skb)
2693 {
2694 struct iwl_priv *priv = hw->priv;
2695
2696 IWL_DEBUG_MACDUMP("enter\n");
2697
2698 IWL_DEBUG_TX("dev->xmit(%d bytes) at rate 0x%02x\n", skb->len,
2699 ieee80211_get_tx_rate(hw, IEEE80211_SKB_CB(skb))->bitrate);
2700
2701 if (iwl_tx_skb(priv, skb))
2702 dev_kfree_skb_any(skb);
2703
2704 IWL_DEBUG_MACDUMP("leave\n");
2705 return 0;
2706 }
2707
2708 static int iwl4965_mac_add_interface(struct ieee80211_hw *hw,
2709 struct ieee80211_if_init_conf *conf)
2710 {
2711 struct iwl_priv *priv = hw->priv;
2712 unsigned long flags;
2713
2714 IWL_DEBUG_MAC80211("enter: type %d\n", conf->type);
2715
2716 if (priv->vif) {
2717 IWL_DEBUG_MAC80211("leave - vif != NULL\n");
2718 return -EOPNOTSUPP;
2719 }
2720
2721 spin_lock_irqsave(&priv->lock, flags);
2722 priv->vif = conf->vif;
2723
2724 spin_unlock_irqrestore(&priv->lock, flags);
2725
2726 mutex_lock(&priv->mutex);
2727
2728 if (conf->mac_addr) {
2729 IWL_DEBUG_MAC80211("Set %pM\n", conf->mac_addr);
2730 memcpy(priv->mac_addr, conf->mac_addr, ETH_ALEN);
2731 }
2732
2733 if (iwl4965_set_mode(priv, conf->type) == -EAGAIN)
2734 /* we are not ready, will run again when ready */
2735 set_bit(STATUS_MODE_PENDING, &priv->status);
2736
2737 mutex_unlock(&priv->mutex);
2738
2739 IWL_DEBUG_MAC80211("leave\n");
2740 return 0;
2741 }
2742
2743 /**
2744 * iwl4965_mac_config - mac80211 config callback
2745 *
2746 * We ignore conf->flags & IEEE80211_CONF_SHORT_SLOT_TIME since it seems to
2747 * be set inappropriately and the driver currently sets the hardware up to
2748 * use it whenever needed.
2749 */
2750 static int iwl4965_mac_config(struct ieee80211_hw *hw, u32 changed)
2751 {
2752 struct iwl_priv *priv = hw->priv;
2753 const struct iwl_channel_info *ch_info;
2754 struct ieee80211_conf *conf = &hw->conf;
2755 unsigned long flags;
2756 int ret = 0;
2757 u16 channel;
2758
2759 mutex_lock(&priv->mutex);
2760 IWL_DEBUG_MAC80211("enter to channel %d\n", conf->channel->hw_value);
2761
2762 priv->current_ht_config.is_ht = conf->ht.enabled;
2763
2764 if (conf->radio_enabled && iwl_radio_kill_sw_enable_radio(priv)) {
2765 IWL_DEBUG_MAC80211("leave - RF-KILL - waiting for uCode\n");
2766 goto out;
2767 }
2768
2769 if (!conf->radio_enabled)
2770 iwl_radio_kill_sw_disable_radio(priv);
2771
2772 if (!iwl_is_ready(priv)) {
2773 IWL_DEBUG_MAC80211("leave - not ready\n");
2774 ret = -EIO;
2775 goto out;
2776 }
2777
2778 if (unlikely(!priv->cfg->mod_params->disable_hw_scan &&
2779 test_bit(STATUS_SCANNING, &priv->status))) {
2780 IWL_DEBUG_MAC80211("leave - scanning\n");
2781 mutex_unlock(&priv->mutex);
2782 return 0;
2783 }
2784
2785 channel = ieee80211_frequency_to_channel(conf->channel->center_freq);
2786 ch_info = iwl_get_channel_info(priv, conf->channel->band, channel);
2787 if (!is_channel_valid(ch_info)) {
2788 IWL_DEBUG_MAC80211("leave - invalid channel\n");
2789 ret = -EINVAL;
2790 goto out;
2791 }
2792
2793 if (priv->iw_mode == NL80211_IFTYPE_ADHOC &&
2794 !is_channel_ibss(ch_info)) {
2795 IWL_ERROR("channel %d in band %d not IBSS channel\n",
2796 conf->channel->hw_value, conf->channel->band);
2797 ret = -EINVAL;
2798 goto out;
2799 }
2800
2801 spin_lock_irqsave(&priv->lock, flags);
2802
2803
2804 /* if we are switching from ht to 2.4 clear flags
2805 * from any ht related info since 2.4 does not
2806 * support ht */
2807 if ((le16_to_cpu(priv->staging_rxon.channel) != channel)
2808 #ifdef IEEE80211_CONF_CHANNEL_SWITCH
2809 && !(conf->flags & IEEE80211_CONF_CHANNEL_SWITCH)
2810 #endif
2811 )
2812 priv->staging_rxon.flags = 0;
2813
2814 iwl_set_rxon_channel(priv, conf->channel);
2815
2816 iwl_set_flags_for_band(priv, conf->channel->band);
2817
2818 /* The list of supported rates and rate mask can be different
2819 * for each band; since the band may have changed, reset
2820 * the rate mask to what mac80211 lists */
2821 iwl4965_set_rate(priv);
2822
2823 spin_unlock_irqrestore(&priv->lock, flags);
2824
2825 #ifdef IEEE80211_CONF_CHANNEL_SWITCH
2826 if (conf->flags & IEEE80211_CONF_CHANNEL_SWITCH) {
2827 iwl4965_hw_channel_switch(priv, conf->channel);
2828 goto out;
2829 }
2830 #endif
2831
2832 if (!conf->radio_enabled) {
2833 IWL_DEBUG_MAC80211("leave - radio disabled\n");
2834 goto out;
2835 }
2836
2837 if (iwl_is_rfkill(priv)) {
2838 IWL_DEBUG_MAC80211("leave - RF kill\n");
2839 ret = -EIO;
2840 goto out;
2841 }
2842
2843 if (conf->flags & IEEE80211_CONF_PS)
2844 ret = iwl_power_set_user_mode(priv, IWL_POWER_INDEX_3);
2845 else
2846 ret = iwl_power_set_user_mode(priv, IWL_POWER_MODE_CAM);
2847 if (ret)
2848 IWL_DEBUG_MAC80211("Error setting power level\n");
2849
2850 IWL_DEBUG_MAC80211("TX Power old=%d new=%d\n",
2851 priv->tx_power_user_lmt, conf->power_level);
2852
2853 iwl_set_tx_power(priv, conf->power_level, false);
2854
2855 iwl4965_set_rate(priv);
2856
2857 if (memcmp(&priv->active_rxon,
2858 &priv->staging_rxon, sizeof(priv->staging_rxon)))
2859 iwl4965_commit_rxon(priv);
2860 else
2861 IWL_DEBUG_INFO("No re-sending same RXON configuration.\n");
2862
2863 IWL_DEBUG_MAC80211("leave\n");
2864
2865 out:
2866 mutex_unlock(&priv->mutex);
2867 return ret;
2868 }
2869
2870 static void iwl4965_config_ap(struct iwl_priv *priv)
2871 {
2872 int ret = 0;
2873 unsigned long flags;
2874
2875 if (test_bit(STATUS_EXIT_PENDING, &priv->status))
2876 return;
2877
2878 /* The following should be done only at AP bring up */
2879 if (!iwl_is_associated(priv)) {
2880
2881 /* RXON - unassoc (to set timing command) */
2882 priv->staging_rxon.filter_flags &= ~RXON_FILTER_ASSOC_MSK;
2883 iwl4965_commit_rxon(priv);
2884
2885 /* RXON Timing */
2886 iwl_setup_rxon_timing(priv);
2887 ret = iwl_send_cmd_pdu(priv, REPLY_RXON_TIMING,
2888 sizeof(priv->rxon_timing), &priv->rxon_timing);
2889 if (ret)
2890 IWL_WARNING("REPLY_RXON_TIMING failed - "
2891 "Attempting to continue.\n");
2892
2893 iwl_set_rxon_chain(priv);
2894
2895 /* FIXME: what should be the assoc_id for AP? */
2896 priv->staging_rxon.assoc_id = cpu_to_le16(priv->assoc_id);
2897 if (priv->assoc_capability & WLAN_CAPABILITY_SHORT_PREAMBLE)
2898 priv->staging_rxon.flags |=
2899 RXON_FLG_SHORT_PREAMBLE_MSK;
2900 else
2901 priv->staging_rxon.flags &=
2902 ~RXON_FLG_SHORT_PREAMBLE_MSK;
2903
2904 if (priv->staging_rxon.flags & RXON_FLG_BAND_24G_MSK) {
2905 if (priv->assoc_capability &
2906 WLAN_CAPABILITY_SHORT_SLOT_TIME)
2907 priv->staging_rxon.flags |=
2908 RXON_FLG_SHORT_SLOT_MSK;
2909 else
2910 priv->staging_rxon.flags &=
2911 ~RXON_FLG_SHORT_SLOT_MSK;
2912
2913 if (priv->iw_mode == NL80211_IFTYPE_ADHOC)
2914 priv->staging_rxon.flags &=
2915 ~RXON_FLG_SHORT_SLOT_MSK;
2916 }
2917 /* restore RXON assoc */
2918 priv->staging_rxon.filter_flags |= RXON_FILTER_ASSOC_MSK;
2919 iwl4965_commit_rxon(priv);
2920 spin_lock_irqsave(&priv->lock, flags);
2921 iwl_activate_qos(priv, 1);
2922 spin_unlock_irqrestore(&priv->lock, flags);
2923 iwl_rxon_add_station(priv, iwl_bcast_addr, 0);
2924 }
2925 iwl4965_send_beacon_cmd(priv);
2926
2927 /* FIXME - we need to add code here to detect a totally new
2928 * configuration, reset the AP, unassoc, rxon timing, assoc,
2929 * clear sta table, add BCAST sta... */
2930 }
2931
2932 /* temporary */
2933 static int iwl4965_mac_beacon_update(struct ieee80211_hw *hw, struct sk_buff *skb);
2934
2935 static int iwl4965_mac_config_interface(struct ieee80211_hw *hw,
2936 struct ieee80211_vif *vif,
2937 struct ieee80211_if_conf *conf)
2938 {
2939 struct iwl_priv *priv = hw->priv;
2940 unsigned long flags;
2941 int rc;
2942
2943 if (conf == NULL)
2944 return -EIO;
2945
2946 if (priv->vif != vif) {
2947 IWL_DEBUG_MAC80211("leave - priv->vif != vif\n");
2948 return 0;
2949 }
2950
2951 if (priv->iw_mode == NL80211_IFTYPE_ADHOC &&
2952 conf->changed & IEEE80211_IFCC_BEACON) {
2953 struct sk_buff *beacon = ieee80211_beacon_get(hw, vif);
2954 if (!beacon)
2955 return -ENOMEM;
2956 rc = iwl4965_mac_beacon_update(hw, beacon);
2957 if (rc)
2958 return rc;
2959 }
2960
2961 if ((priv->iw_mode == NL80211_IFTYPE_AP) &&
2962 (!conf->ssid_len)) {
2963 IWL_DEBUG_MAC80211
2964 ("Leaving in AP mode because HostAPD is not ready.\n");
2965 return 0;
2966 }
2967
2968 if (!iwl_is_alive(priv))
2969 return -EAGAIN;
2970
2971 mutex_lock(&priv->mutex);
2972
2973 if (conf->bssid)
2974 IWL_DEBUG_MAC80211("bssid: %pM\n", conf->bssid);
2975
2976 /*
2977 * very dubious code was here; the probe filtering flag is never set:
2978 *
2979 if (unlikely(test_bit(STATUS_SCANNING, &priv->status)) &&
2980 !(priv->hw->flags & IEEE80211_HW_NO_PROBE_FILTERING)) {
2981 */
2982
2983 if (priv->iw_mode == NL80211_IFTYPE_AP) {
2984 if (!conf->bssid) {
2985 conf->bssid = priv->mac_addr;
2986 memcpy(priv->bssid, priv->mac_addr, ETH_ALEN);
2987 IWL_DEBUG_MAC80211("bssid was set to: %pM\n",
2988 conf->bssid);
2989 }
2990 if (priv->ibss_beacon)
2991 dev_kfree_skb(priv->ibss_beacon);
2992
2993 priv->ibss_beacon = ieee80211_beacon_get(hw, vif);
2994 }
2995
2996 if (iwl_is_rfkill(priv))
2997 goto done;
2998
2999 if (conf->bssid && !is_zero_ether_addr(conf->bssid) &&
3000 !is_multicast_ether_addr(conf->bssid)) {
3001 /* If there is currently a HW scan going on in the background
3002 * then we need to cancel it else the RXON below will fail. */
3003 if (iwl_scan_cancel_timeout(priv, 100)) {
3004 IWL_WARNING("Aborted scan still in progress "
3005 "after 100ms\n");
3006 IWL_DEBUG_MAC80211("leaving - scan abort failed.\n");
3007 mutex_unlock(&priv->mutex);
3008 return -EAGAIN;
3009 }
3010 memcpy(priv->staging_rxon.bssid_addr, conf->bssid, ETH_ALEN);
3011
3012 /* TODO: Audit driver for usage of these members and see
3013 * if mac80211 deprecates them (priv->bssid looks like it
3014 * shouldn't be there, but I haven't scanned the IBSS code
3015 * to verify) - jpk */
3016 memcpy(priv->bssid, conf->bssid, ETH_ALEN);
3017
3018 if (priv->iw_mode == NL80211_IFTYPE_AP)
3019 iwl4965_config_ap(priv);
3020 else {
3021 rc = iwl4965_commit_rxon(priv);
3022 if ((priv->iw_mode == NL80211_IFTYPE_STATION) && rc)
3023 iwl_rxon_add_station(
3024 priv, priv->active_rxon.bssid_addr, 1);
3025 }
3026
3027 } else {
3028 iwl_scan_cancel_timeout(priv, 100);
3029 priv->staging_rxon.filter_flags &= ~RXON_FILTER_ASSOC_MSK;
3030 iwl4965_commit_rxon(priv);
3031 }
3032
3033 done:
3034 spin_lock_irqsave(&priv->lock, flags);
3035 if (!conf->ssid_len)
3036 memset(priv->essid, 0, IW_ESSID_MAX_SIZE);
3037 else
3038 memcpy(priv->essid, conf->ssid, conf->ssid_len);
3039
3040 priv->essid_len = conf->ssid_len;
3041 spin_unlock_irqrestore(&priv->lock, flags);
3042
3043 IWL_DEBUG_MAC80211("leave\n");
3044 mutex_unlock(&priv->mutex);
3045
3046 return 0;
3047 }
3048
3049 static void iwl4965_configure_filter(struct ieee80211_hw *hw,
3050 unsigned int changed_flags,
3051 unsigned int *total_flags,
3052 int mc_count, struct dev_addr_list *mc_list)
3053 {
3054 struct iwl_priv *priv = hw->priv;
3055
3056 if (changed_flags & (*total_flags) & FIF_OTHER_BSS) {
3057 IWL_DEBUG_MAC80211("Enter: type %d (0x%x, 0x%x)\n",
3058 NL80211_IFTYPE_MONITOR,
3059 changed_flags, *total_flags);
3060 /* queue work 'cuz mac80211 is holding a lock which
3061 * prevents us from issuing (synchronous) f/w cmds */
3062 queue_work(priv->workqueue, &priv->set_monitor);
3063 }
3064 *total_flags &= FIF_OTHER_BSS | FIF_ALLMULTI |
3065 FIF_BCN_PRBRESP_PROMISC | FIF_CONTROL;
3066 }
3067
3068 static void iwl4965_mac_remove_interface(struct ieee80211_hw *hw,
3069 struct ieee80211_if_init_conf *conf)
3070 {
3071 struct iwl_priv *priv = hw->priv;
3072
3073 IWL_DEBUG_MAC80211("enter\n");
3074
3075 mutex_lock(&priv->mutex);
3076
3077 if (iwl_is_ready_rf(priv)) {
3078 iwl_scan_cancel_timeout(priv, 100);
3079 priv->staging_rxon.filter_flags &= ~RXON_FILTER_ASSOC_MSK;
3080 iwl4965_commit_rxon(priv);
3081 }
3082 if (priv->vif == conf->vif) {
3083 priv->vif = NULL;
3084 memset(priv->bssid, 0, ETH_ALEN);
3085 memset(priv->essid, 0, IW_ESSID_MAX_SIZE);
3086 priv->essid_len = 0;
3087 }
3088 mutex_unlock(&priv->mutex);
3089
3090 IWL_DEBUG_MAC80211("leave\n");
3091
3092 }
3093
3094 #define IWL_DELAY_NEXT_SCAN_AFTER_ASSOC (HZ*6)
3095 static void iwl4965_bss_info_changed(struct ieee80211_hw *hw,
3096 struct ieee80211_vif *vif,
3097 struct ieee80211_bss_conf *bss_conf,
3098 u32 changes)
3099 {
3100 struct iwl_priv *priv = hw->priv;
3101
3102 IWL_DEBUG_MAC80211("changes = 0x%X\n", changes);
3103
3104 if (changes & BSS_CHANGED_ERP_PREAMBLE) {
3105 IWL_DEBUG_MAC80211("ERP_PREAMBLE %d\n",
3106 bss_conf->use_short_preamble);
3107 if (bss_conf->use_short_preamble)
3108 priv->staging_rxon.flags |= RXON_FLG_SHORT_PREAMBLE_MSK;
3109 else
3110 priv->staging_rxon.flags &= ~RXON_FLG_SHORT_PREAMBLE_MSK;
3111 }
3112
3113 if (changes & BSS_CHANGED_ERP_CTS_PROT) {
3114 IWL_DEBUG_MAC80211("ERP_CTS %d\n", bss_conf->use_cts_prot);
3115 if (bss_conf->use_cts_prot && (priv->band != IEEE80211_BAND_5GHZ))
3116 priv->staging_rxon.flags |= RXON_FLG_TGG_PROTECT_MSK;
3117 else
3118 priv->staging_rxon.flags &= ~RXON_FLG_TGG_PROTECT_MSK;
3119 }
3120
3121 if (changes & BSS_CHANGED_HT) {
3122 iwl4965_ht_conf(priv, bss_conf);
3123 iwl_set_rxon_chain(priv);
3124 }
3125
3126 if (changes & BSS_CHANGED_ASSOC) {
3127 IWL_DEBUG_MAC80211("ASSOC %d\n", bss_conf->assoc);
3128 /* This should never happen as this function should
3129 * never be called from interrupt context. */
3130 if (WARN_ON_ONCE(in_interrupt()))
3131 return;
3132 if (bss_conf->assoc) {
3133 priv->assoc_id = bss_conf->aid;
3134 priv->beacon_int = bss_conf->beacon_int;
3135 priv->power_data.dtim_period = bss_conf->dtim_period;
3136 priv->timestamp = bss_conf->timestamp;
3137 priv->assoc_capability = bss_conf->assoc_capability;
3138
3139 /* we have just associated, don't start scan too early
3140 * leave time for EAPOL exchange to complete
3141 */
3142 priv->next_scan_jiffies = jiffies +
3143 IWL_DELAY_NEXT_SCAN_AFTER_ASSOC;
3144 mutex_lock(&priv->mutex);
3145 iwl4965_post_associate(priv);
3146 mutex_unlock(&priv->mutex);
3147 } else {
3148 priv->assoc_id = 0;
3149 IWL_DEBUG_MAC80211("DISASSOC %d\n", bss_conf->assoc);
3150 }
3151 } else if (changes && iwl_is_associated(priv) && priv->assoc_id) {
3152 IWL_DEBUG_MAC80211("Associated Changes %d\n", changes);
3153 iwl_send_rxon_assoc(priv);
3154 }
3155
3156 }
3157
3158 static int iwl_mac_hw_scan(struct ieee80211_hw *hw, u8 *ssid, size_t ssid_len)
3159 {
3160 unsigned long flags;
3161 struct iwl_priv *priv = hw->priv;
3162 int ret;
3163
3164 IWL_DEBUG_MAC80211("enter\n");
3165
3166 mutex_lock(&priv->mutex);
3167 spin_lock_irqsave(&priv->lock, flags);
3168
3169 if (!iwl_is_ready_rf(priv)) {
3170 ret = -EIO;
3171 IWL_DEBUG_MAC80211("leave - not ready or exit pending\n");
3172 goto out_unlock;
3173 }
3174
3175 if (priv->iw_mode == NL80211_IFTYPE_AP) { /* APs don't scan */
3176 ret = -EIO;
3177 IWL_ERROR("ERROR: APs don't scan\n");
3178 goto out_unlock;
3179 }
3180
3181 /* We don't schedule scan within next_scan_jiffies period.
3182 * Avoid scanning during possible EAPOL exchange, return
3183 * success immediately.
3184 */
3185 if (priv->next_scan_jiffies &&
3186 time_after(priv->next_scan_jiffies, jiffies)) {
3187 IWL_DEBUG_SCAN("scan rejected: within next scan period\n");
3188 queue_work(priv->workqueue, &priv->scan_completed);
3189 ret = 0;
3190 goto out_unlock;
3191 }
3192
3193 /* if we just finished scan ask for delay */
3194 if (iwl_is_associated(priv) && priv->last_scan_jiffies &&
3195 time_after(priv->last_scan_jiffies + IWL_DELAY_NEXT_SCAN, jiffies)) {
3196 IWL_DEBUG_SCAN("scan rejected: within previous scan period\n");
3197 queue_work(priv->workqueue, &priv->scan_completed);
3198 ret = 0;
3199 goto out_unlock;
3200 }
3201
3202 if (ssid_len) {
3203 priv->one_direct_scan = 1;
3204 priv->direct_ssid_len = min_t(u8, ssid_len, IW_ESSID_MAX_SIZE);
3205 memcpy(priv->direct_ssid, ssid, priv->direct_ssid_len);
3206 } else {
3207 priv->one_direct_scan = 0;
3208 }
3209
3210 ret = iwl_scan_initiate(priv);
3211
3212 IWL_DEBUG_MAC80211("leave\n");
3213
3214 out_unlock:
3215 spin_unlock_irqrestore(&priv->lock, flags);
3216 mutex_unlock(&priv->mutex);
3217
3218 return ret;
3219 }
3220
3221 static void iwl4965_mac_update_tkip_key(struct ieee80211_hw *hw,
3222 struct ieee80211_key_conf *keyconf, const u8 *addr,
3223 u32 iv32, u16 *phase1key)
3224 {
3225 struct iwl_priv *priv = hw->priv;
3226 u8 sta_id = IWL_INVALID_STATION;
3227 unsigned long flags;
3228 __le16 key_flags = 0;
3229 int i;
3230
3231 IWL_DEBUG_MAC80211("enter\n");
3232
3233 sta_id = iwl_find_station(priv, addr);
3234 if (sta_id == IWL_INVALID_STATION) {
3235 IWL_DEBUG_MAC80211("leave - %pM not in station map.\n",
3236 addr);
3237 return;
3238 }
3239
3240 if (iwl_scan_cancel(priv)) {
3241 /* cancel scan failed, just live w/ bad key and rely
3242 briefly on SW decryption */
3243 return;
3244 }
3245
3246 key_flags |= (STA_KEY_FLG_TKIP | STA_KEY_FLG_MAP_KEY_MSK);
3247 key_flags |= cpu_to_le16(keyconf->keyidx << STA_KEY_FLG_KEYID_POS);
3248 key_flags &= ~STA_KEY_FLG_INVALID;
3249
3250 if (sta_id == priv->hw_params.bcast_sta_id)
3251 key_flags |= STA_KEY_MULTICAST_MSK;
3252
3253 spin_lock_irqsave(&priv->sta_lock, flags);
3254
3255 priv->stations[sta_id].sta.key.key_flags = key_flags;
3256 priv->stations[sta_id].sta.key.tkip_rx_tsc_byte2 = (u8) iv32;
3257
3258 for (i = 0; i < 5; i++)
3259 priv->stations[sta_id].sta.key.tkip_rx_ttak[i] =
3260 cpu_to_le16(phase1key[i]);
3261
3262 priv->stations[sta_id].sta.sta.modify_mask = STA_MODIFY_KEY_MASK;
3263 priv->stations[sta_id].sta.mode = STA_CONTROL_MODIFY_MSK;
3264
3265 iwl_send_add_sta(priv, &priv->stations[sta_id].sta, CMD_ASYNC);
3266
3267 spin_unlock_irqrestore(&priv->sta_lock, flags);
3268
3269 IWL_DEBUG_MAC80211("leave\n");
3270 }
3271
3272 static int iwl4965_mac_set_key(struct ieee80211_hw *hw, enum set_key_cmd cmd,
3273 const u8 *local_addr, const u8 *addr,
3274 struct ieee80211_key_conf *key)
3275 {
3276 struct iwl_priv *priv = hw->priv;
3277 int ret = 0;
3278 u8 sta_id = IWL_INVALID_STATION;
3279 u8 is_default_wep_key = 0;
3280
3281 IWL_DEBUG_MAC80211("enter\n");
3282
3283 if (priv->hw_params.sw_crypto) {
3284 IWL_DEBUG_MAC80211("leave - hwcrypto disabled\n");
3285 return -EOPNOTSUPP;
3286 }
3287
3288 if (is_zero_ether_addr(addr))
3289 /* only support pairwise keys */
3290 return -EOPNOTSUPP;
3291
3292 sta_id = iwl_find_station(priv, addr);
3293 if (sta_id == IWL_INVALID_STATION) {
3294 IWL_DEBUG_MAC80211("leave - %pM not in station map.\n",
3295 addr);
3296 return -EINVAL;
3297
3298 }
3299
3300 mutex_lock(&priv->mutex);
3301 iwl_scan_cancel_timeout(priv, 100);
3302 mutex_unlock(&priv->mutex);
3303
3304 /* If we are getting WEP group key and we didn't receive any key mapping
3305 * so far, we are in legacy wep mode (group key only), otherwise we are
3306 * in 1X mode.
3307 * In legacy wep mode, we use another host command to the uCode */
3308 if (key->alg == ALG_WEP && sta_id == priv->hw_params.bcast_sta_id &&
3309 priv->iw_mode != NL80211_IFTYPE_AP) {
3310 if (cmd == SET_KEY)
3311 is_default_wep_key = !priv->key_mapping_key;
3312 else
3313 is_default_wep_key =
3314 (key->hw_key_idx == HW_KEY_DEFAULT);
3315 }
3316
3317 switch (cmd) {
3318 case SET_KEY:
3319 if (is_default_wep_key)
3320 ret = iwl_set_default_wep_key(priv, key);
3321 else
3322 ret = iwl_set_dynamic_key(priv, key, sta_id);
3323
3324 IWL_DEBUG_MAC80211("enable hwcrypto key\n");
3325 break;
3326 case DISABLE_KEY:
3327 if (is_default_wep_key)
3328 ret = iwl_remove_default_wep_key(priv, key);
3329 else
3330 ret = iwl_remove_dynamic_key(priv, key, sta_id);
3331
3332 IWL_DEBUG_MAC80211("disable hwcrypto key\n");
3333 break;
3334 default:
3335 ret = -EINVAL;
3336 }
3337
3338 IWL_DEBUG_MAC80211("leave\n");
3339
3340 return ret;
3341 }
3342
3343 static int iwl4965_mac_conf_tx(struct ieee80211_hw *hw, u16 queue,
3344 const struct ieee80211_tx_queue_params *params)
3345 {
3346 struct iwl_priv *priv = hw->priv;
3347 unsigned long flags;
3348 int q;
3349
3350 IWL_DEBUG_MAC80211("enter\n");
3351
3352 if (!iwl_is_ready_rf(priv)) {
3353 IWL_DEBUG_MAC80211("leave - RF not ready\n");
3354 return -EIO;
3355 }
3356
3357 if (queue >= AC_NUM) {
3358 IWL_DEBUG_MAC80211("leave - queue >= AC_NUM %d\n", queue);
3359 return 0;
3360 }
3361
3362 if (!priv->qos_data.qos_enable) {
3363 priv->qos_data.qos_active = 0;
3364 IWL_DEBUG_MAC80211("leave - qos not enabled\n");
3365 return 0;
3366 }
3367 q = AC_NUM - 1 - queue;
3368
3369 spin_lock_irqsave(&priv->lock, flags);
3370
3371 priv->qos_data.def_qos_parm.ac[q].cw_min = cpu_to_le16(params->cw_min);
3372 priv->qos_data.def_qos_parm.ac[q].cw_max = cpu_to_le16(params->cw_max);
3373 priv->qos_data.def_qos_parm.ac[q].aifsn = params->aifs;
3374 priv->qos_data.def_qos_parm.ac[q].edca_txop =
3375 cpu_to_le16((params->txop * 32));
3376
3377 priv->qos_data.def_qos_parm.ac[q].reserved1 = 0;
3378 priv->qos_data.qos_active = 1;
3379
3380 if (priv->iw_mode == NL80211_IFTYPE_AP)
3381 iwl_activate_qos(priv, 1);
3382 else if (priv->assoc_id && iwl_is_associated(priv))
3383 iwl_activate_qos(priv, 0);
3384
3385 spin_unlock_irqrestore(&priv->lock, flags);
3386
3387 IWL_DEBUG_MAC80211("leave\n");
3388 return 0;
3389 }
3390
3391 static int iwl4965_mac_ampdu_action(struct ieee80211_hw *hw,
3392 enum ieee80211_ampdu_mlme_action action,
3393 struct ieee80211_sta *sta, u16 tid, u16 *ssn)
3394 {
3395 struct iwl_priv *priv = hw->priv;
3396
3397 IWL_DEBUG_HT("A-MPDU action on addr %pM tid %d\n",
3398 sta->addr, tid);
3399
3400 if (!(priv->cfg->sku & IWL_SKU_N))
3401 return -EACCES;
3402
3403 switch (action) {
3404 case IEEE80211_AMPDU_RX_START:
3405 IWL_DEBUG_HT("start Rx\n");
3406 return iwl_rx_agg_start(priv, sta->addr, tid, *ssn);
3407 case IEEE80211_AMPDU_RX_STOP:
3408 IWL_DEBUG_HT("stop Rx\n");
3409 return iwl_rx_agg_stop(priv, sta->addr, tid);
3410 case IEEE80211_AMPDU_TX_START:
3411 IWL_DEBUG_HT("start Tx\n");
3412 return iwl_tx_agg_start(priv, sta->addr, tid, ssn);
3413 case IEEE80211_AMPDU_TX_STOP:
3414 IWL_DEBUG_HT("stop Tx\n");
3415 return iwl_tx_agg_stop(priv, sta->addr, tid);
3416 default:
3417 IWL_DEBUG_HT("unknown\n");
3418 return -EINVAL;
3419 break;
3420 }
3421 return 0;
3422 }
3423 static int iwl4965_mac_get_tx_stats(struct ieee80211_hw *hw,
3424 struct ieee80211_tx_queue_stats *stats)
3425 {
3426 struct iwl_priv *priv = hw->priv;
3427 int i, avail;
3428 struct iwl_tx_queue *txq;
3429 struct iwl_queue *q;
3430 unsigned long flags;
3431
3432 IWL_DEBUG_MAC80211("enter\n");
3433
3434 if (!iwl_is_ready_rf(priv)) {
3435 IWL_DEBUG_MAC80211("leave - RF not ready\n");
3436 return -EIO;
3437 }
3438
3439 spin_lock_irqsave(&priv->lock, flags);
3440
3441 for (i = 0; i < AC_NUM; i++) {
3442 txq = &priv->txq[i];
3443 q = &txq->q;
3444 avail = iwl_queue_space(q);
3445
3446 stats[i].len = q->n_window - avail;
3447 stats[i].limit = q->n_window - q->high_mark;
3448 stats[i].count = q->n_window;
3449
3450 }
3451 spin_unlock_irqrestore(&priv->lock, flags);
3452
3453 IWL_DEBUG_MAC80211("leave\n");
3454
3455 return 0;
3456 }
3457
3458 static int iwl4965_mac_get_stats(struct ieee80211_hw *hw,
3459 struct ieee80211_low_level_stats *stats)
3460 {
3461 struct iwl_priv *priv = hw->priv;
3462
3463 priv = hw->priv;
3464 IWL_DEBUG_MAC80211("enter\n");
3465 IWL_DEBUG_MAC80211("leave\n");
3466
3467 return 0;
3468 }
3469
3470 static void iwl4965_mac_reset_tsf(struct ieee80211_hw *hw)
3471 {
3472 struct iwl_priv *priv = hw->priv;
3473 unsigned long flags;
3474
3475 mutex_lock(&priv->mutex);
3476 IWL_DEBUG_MAC80211("enter\n");
3477
3478 spin_lock_irqsave(&priv->lock, flags);
3479 memset(&priv->current_ht_config, 0, sizeof(struct iwl_ht_info));
3480 spin_unlock_irqrestore(&priv->lock, flags);
3481
3482 iwl_reset_qos(priv);
3483
3484 spin_lock_irqsave(&priv->lock, flags);
3485 priv->assoc_id = 0;
3486 priv->assoc_capability = 0;
3487 priv->assoc_station_added = 0;
3488
3489 /* new association get rid of ibss beacon skb */
3490 if (priv->ibss_beacon)
3491 dev_kfree_skb(priv->ibss_beacon);
3492
3493 priv->ibss_beacon = NULL;
3494
3495 priv->beacon_int = priv->hw->conf.beacon_int;
3496 priv->timestamp = 0;
3497 if ((priv->iw_mode == NL80211_IFTYPE_STATION))
3498 priv->beacon_int = 0;
3499
3500 spin_unlock_irqrestore(&priv->lock, flags);
3501
3502 if (!iwl_is_ready_rf(priv)) {
3503 IWL_DEBUG_MAC80211("leave - not ready\n");
3504 mutex_unlock(&priv->mutex);
3505 return;
3506 }
3507
3508 /* we are restarting association process
3509 * clear RXON_FILTER_ASSOC_MSK bit
3510 */
3511 if (priv->iw_mode != NL80211_IFTYPE_AP) {
3512 iwl_scan_cancel_timeout(priv, 100);
3513 priv->staging_rxon.filter_flags &= ~RXON_FILTER_ASSOC_MSK;
3514 iwl4965_commit_rxon(priv);
3515 }
3516
3517 iwl_power_update_mode(priv, 0);
3518
3519 /* Per mac80211.h: This is only used in IBSS mode... */
3520 if (priv->iw_mode != NL80211_IFTYPE_ADHOC) {
3521
3522 /* switch to CAM during association period.
3523 * the ucode will block any association/authentication
3524 * frome during assiciation period if it can not hear
3525 * the AP because of PM. the timer enable PM back is
3526 * association do not complete
3527 */
3528 if (priv->hw->conf.channel->flags & (IEEE80211_CHAN_PASSIVE_SCAN |
3529 IEEE80211_CHAN_RADAR))
3530 iwl_power_disable_management(priv, 3000);
3531
3532 IWL_DEBUG_MAC80211("leave - not in IBSS\n");
3533 mutex_unlock(&priv->mutex);
3534 return;
3535 }
3536
3537 iwl4965_set_rate(priv);
3538
3539 mutex_unlock(&priv->mutex);
3540
3541 IWL_DEBUG_MAC80211("leave\n");
3542 }
3543
3544 static int iwl4965_mac_beacon_update(struct ieee80211_hw *hw, struct sk_buff *skb)
3545 {
3546 struct iwl_priv *priv = hw->priv;
3547 unsigned long flags;
3548 __le64 timestamp;
3549
3550 mutex_lock(&priv->mutex);
3551 IWL_DEBUG_MAC80211("enter\n");
3552
3553 if (!iwl_is_ready_rf(priv)) {
3554 IWL_DEBUG_MAC80211("leave - RF not ready\n");
3555 mutex_unlock(&priv->mutex);
3556 return -EIO;
3557 }
3558
3559 if (priv->iw_mode != NL80211_IFTYPE_ADHOC) {
3560 IWL_DEBUG_MAC80211("leave - not IBSS\n");
3561 mutex_unlock(&priv->mutex);
3562 return -EIO;
3563 }
3564
3565 spin_lock_irqsave(&priv->lock, flags);
3566
3567 if (priv->ibss_beacon)
3568 dev_kfree_skb(priv->ibss_beacon);
3569
3570 priv->ibss_beacon = skb;
3571
3572 priv->assoc_id = 0;
3573 timestamp = ((struct ieee80211_mgmt *)skb->data)->u.beacon.timestamp;
3574 priv->timestamp = le64_to_cpu(timestamp);
3575
3576 IWL_DEBUG_MAC80211("leave\n");
3577 spin_unlock_irqrestore(&priv->lock, flags);
3578
3579 iwl_reset_qos(priv);
3580
3581 iwl4965_post_associate(priv);
3582
3583 mutex_unlock(&priv->mutex);
3584
3585 return 0;
3586 }
3587
3588 /*****************************************************************************
3589 *
3590 * sysfs attributes
3591 *
3592 *****************************************************************************/
3593
3594 #ifdef CONFIG_IWLWIFI_DEBUG
3595
3596 /*
3597 * The following adds a new attribute to the sysfs representation
3598 * of this device driver (i.e. a new file in /sys/bus/pci/drivers/iwl/)
3599 * used for controlling the debug level.
3600 *
3601 * See the level definitions in iwl for details.
3602 */
3603
3604 static ssize_t show_debug_level(struct device *d,
3605 struct device_attribute *attr, char *buf)
3606 {
3607 struct iwl_priv *priv = d->driver_data;
3608
3609 return sprintf(buf, "0x%08X\n", priv->debug_level);
3610 }
3611 static ssize_t store_debug_level(struct device *d,
3612 struct device_attribute *attr,
3613 const char *buf, size_t count)
3614 {
3615 struct iwl_priv *priv = d->driver_data;
3616 unsigned long val;
3617 int ret;
3618
3619 ret = strict_strtoul(buf, 0, &val);
3620 if (ret)
3621 printk(KERN_INFO DRV_NAME
3622 ": %s is not in hex or decimal form.\n", buf);
3623 else
3624 priv->debug_level = val;
3625
3626 return strnlen(buf, count);
3627 }
3628
3629 static DEVICE_ATTR(debug_level, S_IWUSR | S_IRUGO,
3630 show_debug_level, store_debug_level);
3631
3632
3633 #endif /* CONFIG_IWLWIFI_DEBUG */
3634
3635
3636 static ssize_t show_version(struct device *d,
3637 struct device_attribute *attr, char *buf)
3638 {
3639 struct iwl_priv *priv = d->driver_data;
3640 struct iwl_alive_resp *palive = &priv->card_alive;
3641 ssize_t pos = 0;
3642 u16 eeprom_ver;
3643
3644 if (palive->is_valid)
3645 pos += sprintf(buf + pos,
3646 "fw version: 0x%01X.0x%01X.0x%01X.0x%01X\n"
3647 "fw type: 0x%01X 0x%01X\n",
3648 palive->ucode_major, palive->ucode_minor,
3649 palive->sw_rev[0], palive->sw_rev[1],
3650 palive->ver_type, palive->ver_subtype);
3651 else
3652 pos += sprintf(buf + pos, "fw not loaded\n");
3653
3654 if (priv->eeprom) {
3655 eeprom_ver = iwl_eeprom_query16(priv, EEPROM_VERSION);
3656 pos += sprintf(buf + pos, "EEPROM version: 0x%x\n",
3657 eeprom_ver);
3658 } else {
3659 pos += sprintf(buf + pos, "EEPROM not initialzed\n");
3660 }
3661
3662 return pos;
3663 }
3664
3665 static DEVICE_ATTR(version, S_IWUSR | S_IRUGO, show_version, NULL);
3666
3667 static ssize_t show_temperature(struct device *d,
3668 struct device_attribute *attr, char *buf)
3669 {
3670 struct iwl_priv *priv = (struct iwl_priv *)d->driver_data;
3671
3672 if (!iwl_is_alive(priv))
3673 return -EAGAIN;
3674
3675 return sprintf(buf, "%d\n", priv->temperature);
3676 }
3677
3678 static DEVICE_ATTR(temperature, S_IRUGO, show_temperature, NULL);
3679
3680 static ssize_t show_tx_power(struct device *d,
3681 struct device_attribute *attr, char *buf)
3682 {
3683 struct iwl_priv *priv = (struct iwl_priv *)d->driver_data;
3684 return sprintf(buf, "%d\n", priv->tx_power_user_lmt);
3685 }
3686
3687 static ssize_t store_tx_power(struct device *d,
3688 struct device_attribute *attr,
3689 const char *buf, size_t count)
3690 {
3691 struct iwl_priv *priv = (struct iwl_priv *)d->driver_data;
3692 unsigned long val;
3693 int ret;
3694
3695 ret = strict_strtoul(buf, 10, &val);
3696 if (ret)
3697 printk(KERN_INFO DRV_NAME
3698 ": %s is not in decimal form.\n", buf);
3699 else
3700 iwl_set_tx_power(priv, val, false);
3701
3702 return count;
3703 }
3704
3705 static DEVICE_ATTR(tx_power, S_IWUSR | S_IRUGO, show_tx_power, store_tx_power);
3706
3707 static ssize_t show_flags(struct device *d,
3708 struct device_attribute *attr, char *buf)
3709 {
3710 struct iwl_priv *priv = (struct iwl_priv *)d->driver_data;
3711
3712 return sprintf(buf, "0x%04X\n", priv->active_rxon.flags);
3713 }
3714
3715 static ssize_t store_flags(struct device *d,
3716 struct device_attribute *attr,
3717 const char *buf, size_t count)
3718 {
3719 struct iwl_priv *priv = (struct iwl_priv *)d->driver_data;
3720 unsigned long val;
3721 u32 flags;
3722 int ret = strict_strtoul(buf, 0, &val);
3723 if (ret)
3724 return ret;
3725 flags = (u32)val;
3726
3727 mutex_lock(&priv->mutex);
3728 if (le32_to_cpu(priv->staging_rxon.flags) != flags) {
3729 /* Cancel any currently running scans... */
3730 if (iwl_scan_cancel_timeout(priv, 100))
3731 IWL_WARNING("Could not cancel scan.\n");
3732 else {
3733 IWL_DEBUG_INFO("Commit rxon.flags = 0x%04X\n", flags);
3734 priv->staging_rxon.flags = cpu_to_le32(flags);
3735 iwl4965_commit_rxon(priv);
3736 }
3737 }
3738 mutex_unlock(&priv->mutex);
3739
3740 return count;
3741 }
3742
3743 static DEVICE_ATTR(flags, S_IWUSR | S_IRUGO, show_flags, store_flags);
3744
3745 static ssize_t show_filter_flags(struct device *d,
3746 struct device_attribute *attr, char *buf)
3747 {
3748 struct iwl_priv *priv = (struct iwl_priv *)d->driver_data;
3749
3750 return sprintf(buf, "0x%04X\n",
3751 le32_to_cpu(priv->active_rxon.filter_flags));
3752 }
3753
3754 static ssize_t store_filter_flags(struct device *d,
3755 struct device_attribute *attr,
3756 const char *buf, size_t count)
3757 {
3758 struct iwl_priv *priv = (struct iwl_priv *)d->driver_data;
3759 unsigned long val;
3760 u32 filter_flags;
3761 int ret = strict_strtoul(buf, 0, &val);
3762 if (ret)
3763 return ret;
3764 filter_flags = (u32)val;
3765
3766 mutex_lock(&priv->mutex);
3767 if (le32_to_cpu(priv->staging_rxon.filter_flags) != filter_flags) {
3768 /* Cancel any currently running scans... */
3769 if (iwl_scan_cancel_timeout(priv, 100))
3770 IWL_WARNING("Could not cancel scan.\n");
3771 else {
3772 IWL_DEBUG_INFO("Committing rxon.filter_flags = "
3773 "0x%04X\n", filter_flags);
3774 priv->staging_rxon.filter_flags =
3775 cpu_to_le32(filter_flags);
3776 iwl4965_commit_rxon(priv);
3777 }
3778 }
3779 mutex_unlock(&priv->mutex);
3780
3781 return count;
3782 }
3783
3784 static DEVICE_ATTR(filter_flags, S_IWUSR | S_IRUGO, show_filter_flags,
3785 store_filter_flags);
3786
3787 #ifdef CONFIG_IWLAGN_SPECTRUM_MEASUREMENT
3788
3789 static ssize_t show_measurement(struct device *d,
3790 struct device_attribute *attr, char *buf)
3791 {
3792 struct iwl_priv *priv = dev_get_drvdata(d);
3793 struct iwl4965_spectrum_notification measure_report;
3794 u32 size = sizeof(measure_report), len = 0, ofs = 0;
3795 u8 *data = (u8 *)&measure_report;
3796 unsigned long flags;
3797
3798 spin_lock_irqsave(&priv->lock, flags);
3799 if (!(priv->measurement_status & MEASUREMENT_READY)) {
3800 spin_unlock_irqrestore(&priv->lock, flags);
3801 return 0;
3802 }
3803 memcpy(&measure_report, &priv->measure_report, size);
3804 priv->measurement_status = 0;
3805 spin_unlock_irqrestore(&priv->lock, flags);
3806
3807 while (size && (PAGE_SIZE - len)) {
3808 hex_dump_to_buffer(data + ofs, size, 16, 1, buf + len,
3809 PAGE_SIZE - len, 1);
3810 len = strlen(buf);
3811 if (PAGE_SIZE - len)
3812 buf[len++] = '\n';
3813
3814 ofs += 16;
3815 size -= min(size, 16U);
3816 }
3817
3818 return len;
3819 }
3820
3821 static ssize_t store_measurement(struct device *d,
3822 struct device_attribute *attr,
3823 const char *buf, size_t count)
3824 {
3825 struct iwl_priv *priv = dev_get_drvdata(d);
3826 struct ieee80211_measurement_params params = {
3827 .channel = le16_to_cpu(priv->active_rxon.channel),
3828 .start_time = cpu_to_le64(priv->last_tsf),
3829 .duration = cpu_to_le16(1),
3830 };
3831 u8 type = IWL_MEASURE_BASIC;
3832 u8 buffer[32];
3833 u8 channel;
3834
3835 if (count) {
3836 char *p = buffer;
3837 strncpy(buffer, buf, min(sizeof(buffer), count));
3838 channel = simple_strtoul(p, NULL, 0);
3839 if (channel)
3840 params.channel = channel;
3841
3842 p = buffer;
3843 while (*p && *p != ' ')
3844 p++;
3845 if (*p)
3846 type = simple_strtoul(p + 1, NULL, 0);
3847 }
3848
3849 IWL_DEBUG_INFO("Invoking measurement of type %d on "
3850 "channel %d (for '%s')\n", type, params.channel, buf);
3851 iwl4965_get_measurement(priv, &params, type);
3852
3853 return count;
3854 }
3855
3856 static DEVICE_ATTR(measurement, S_IRUSR | S_IWUSR,
3857 show_measurement, store_measurement);
3858 #endif /* CONFIG_IWLAGN_SPECTRUM_MEASUREMENT */
3859
3860 static ssize_t store_retry_rate(struct device *d,
3861 struct device_attribute *attr,
3862 const char *buf, size_t count)
3863 {
3864 struct iwl_priv *priv = dev_get_drvdata(d);
3865 long val;
3866 int ret = strict_strtol(buf, 10, &val);
3867 if (!ret)
3868 return ret;
3869
3870 priv->retry_rate = (val > 0) ? val : 1;
3871
3872 return count;
3873 }
3874
3875 static ssize_t show_retry_rate(struct device *d,
3876 struct device_attribute *attr, char *buf)
3877 {
3878 struct iwl_priv *priv = dev_get_drvdata(d);
3879 return sprintf(buf, "%d", priv->retry_rate);
3880 }
3881
3882 static DEVICE_ATTR(retry_rate, S_IWUSR | S_IRUSR, show_retry_rate,
3883 store_retry_rate);
3884
3885 static ssize_t store_power_level(struct device *d,
3886 struct device_attribute *attr,
3887 const char *buf, size_t count)
3888 {
3889 struct iwl_priv *priv = dev_get_drvdata(d);
3890 int ret;
3891 unsigned long mode;
3892
3893
3894 mutex_lock(&priv->mutex);
3895
3896 if (!iwl_is_ready(priv)) {
3897 ret = -EAGAIN;
3898 goto out;
3899 }
3900
3901 ret = strict_strtoul(buf, 10, &mode);
3902 if (ret)
3903 goto out;
3904
3905 ret = iwl_power_set_user_mode(priv, mode);
3906 if (ret) {
3907 IWL_DEBUG_MAC80211("failed setting power mode.\n");
3908 goto out;
3909 }
3910 ret = count;
3911
3912 out:
3913 mutex_unlock(&priv->mutex);
3914 return ret;
3915 }
3916
3917 static ssize_t show_power_level(struct device *d,
3918 struct device_attribute *attr, char *buf)
3919 {
3920 struct iwl_priv *priv = dev_get_drvdata(d);
3921 int mode = priv->power_data.user_power_setting;
3922 int system = priv->power_data.system_power_setting;
3923 int level = priv->power_data.power_mode;
3924 char *p = buf;
3925
3926 switch (system) {
3927 case IWL_POWER_SYS_AUTO:
3928 p += sprintf(p, "SYSTEM:auto");
3929 break;
3930 case IWL_POWER_SYS_AC:
3931 p += sprintf(p, "SYSTEM:ac");
3932 break;
3933 case IWL_POWER_SYS_BATTERY:
3934 p += sprintf(p, "SYSTEM:battery");
3935 break;
3936 }
3937
3938 p += sprintf(p, "\tMODE:%s", (mode < IWL_POWER_AUTO)?"fixed":"auto");
3939 p += sprintf(p, "\tINDEX:%d", level);
3940 p += sprintf(p, "\n");
3941 return p - buf + 1;
3942 }
3943
3944 static DEVICE_ATTR(power_level, S_IWUSR | S_IRUSR, show_power_level,
3945 store_power_level);
3946
3947 static ssize_t show_channels(struct device *d,
3948 struct device_attribute *attr, char *buf)
3949 {
3950
3951 struct iwl_priv *priv = dev_get_drvdata(d);
3952 struct ieee80211_channel *channels = NULL;
3953 const struct ieee80211_supported_band *supp_band = NULL;
3954 int len = 0, i;
3955 int count = 0;
3956
3957 if (!test_bit(STATUS_GEO_CONFIGURED, &priv->status))
3958 return -EAGAIN;
3959
3960 supp_band = iwl_get_hw_mode(priv, IEEE80211_BAND_2GHZ);
3961 channels = supp_band->channels;
3962 count = supp_band->n_channels;
3963
3964 len += sprintf(&buf[len],
3965 "Displaying %d channels in 2.4GHz band "
3966 "(802.11bg):\n", count);
3967
3968 for (i = 0; i < count; i++)
3969 len += sprintf(&buf[len], "%d: %ddBm: BSS%s%s, %s.\n",
3970 ieee80211_frequency_to_channel(
3971 channels[i].center_freq),
3972 channels[i].max_power,
3973 channels[i].flags & IEEE80211_CHAN_RADAR ?
3974 " (IEEE 802.11h required)" : "",
3975 (!(channels[i].flags & IEEE80211_CHAN_NO_IBSS)
3976 || (channels[i].flags &
3977 IEEE80211_CHAN_RADAR)) ? "" :
3978 ", IBSS",
3979 channels[i].flags &
3980 IEEE80211_CHAN_PASSIVE_SCAN ?
3981 "passive only" : "active/passive");
3982
3983 supp_band = iwl_get_hw_mode(priv, IEEE80211_BAND_5GHZ);
3984 channels = supp_band->channels;
3985 count = supp_band->n_channels;
3986
3987 len += sprintf(&buf[len], "Displaying %d channels in 5.2GHz band "
3988 "(802.11a):\n", count);
3989
3990 for (i = 0; i < count; i++)
3991 len += sprintf(&buf[len], "%d: %ddBm: BSS%s%s, %s.\n",
3992 ieee80211_frequency_to_channel(
3993 channels[i].center_freq),
3994 channels[i].max_power,
3995 channels[i].flags & IEEE80211_CHAN_RADAR ?
3996 " (IEEE 802.11h required)" : "",
3997 ((channels[i].flags & IEEE80211_CHAN_NO_IBSS)
3998 || (channels[i].flags &
3999 IEEE80211_CHAN_RADAR)) ? "" :
4000 ", IBSS",
4001 channels[i].flags &
4002 IEEE80211_CHAN_PASSIVE_SCAN ?
4003 "passive only" : "active/passive");
4004
4005 return len;
4006 }
4007
4008 static DEVICE_ATTR(channels, S_IRUSR, show_channels, NULL);
4009
4010 static ssize_t show_statistics(struct device *d,
4011 struct device_attribute *attr, char *buf)
4012 {
4013 struct iwl_priv *priv = dev_get_drvdata(d);
4014 u32 size = sizeof(struct iwl_notif_statistics);
4015 u32 len = 0, ofs = 0;
4016 u8 *data = (u8 *)&priv->statistics;
4017 int rc = 0;
4018
4019 if (!iwl_is_alive(priv))
4020 return -EAGAIN;
4021
4022 mutex_lock(&priv->mutex);
4023 rc = iwl_send_statistics_request(priv, 0);
4024 mutex_unlock(&priv->mutex);
4025
4026 if (rc) {
4027 len = sprintf(buf,
4028 "Error sending statistics request: 0x%08X\n", rc);
4029 return len;
4030 }
4031
4032 while (size && (PAGE_SIZE - len)) {
4033 hex_dump_to_buffer(data + ofs, size, 16, 1, buf + len,
4034 PAGE_SIZE - len, 1);
4035 len = strlen(buf);
4036 if (PAGE_SIZE - len)
4037 buf[len++] = '\n';
4038
4039 ofs += 16;
4040 size -= min(size, 16U);
4041 }
4042
4043 return len;
4044 }
4045
4046 static DEVICE_ATTR(statistics, S_IRUGO, show_statistics, NULL);
4047
4048 static ssize_t show_status(struct device *d,
4049 struct device_attribute *attr, char *buf)
4050 {
4051 struct iwl_priv *priv = (struct iwl_priv *)d->driver_data;
4052 if (!iwl_is_alive(priv))
4053 return -EAGAIN;
4054 return sprintf(buf, "0x%08x\n", (int)priv->status);
4055 }
4056
4057 static DEVICE_ATTR(status, S_IRUGO, show_status, NULL);
4058
4059 /*****************************************************************************
4060 *
4061 * driver setup and teardown
4062 *
4063 *****************************************************************************/
4064
4065 static void iwl_setup_deferred_work(struct iwl_priv *priv)
4066 {
4067 priv->workqueue = create_workqueue(DRV_NAME);
4068
4069 init_waitqueue_head(&priv->wait_command_queue);
4070
4071 INIT_WORK(&priv->up, iwl4965_bg_up);
4072 INIT_WORK(&priv->restart, iwl4965_bg_restart);
4073 INIT_WORK(&priv->rx_replenish, iwl4965_bg_rx_replenish);
4074 INIT_WORK(&priv->rf_kill, iwl4965_bg_rf_kill);
4075 INIT_WORK(&priv->beacon_update, iwl4965_bg_beacon_update);
4076 INIT_WORK(&priv->set_monitor, iwl4965_bg_set_monitor);
4077 INIT_WORK(&priv->run_time_calib_work, iwl_bg_run_time_calib_work);
4078 INIT_DELAYED_WORK(&priv->init_alive_start, iwl_bg_init_alive_start);
4079 INIT_DELAYED_WORK(&priv->alive_start, iwl_bg_alive_start);
4080
4081 iwl_setup_scan_deferred_work(priv);
4082 iwl_setup_power_deferred_work(priv);
4083
4084 if (priv->cfg->ops->lib->setup_deferred_work)
4085 priv->cfg->ops->lib->setup_deferred_work(priv);
4086
4087 init_timer(&priv->statistics_periodic);
4088 priv->statistics_periodic.data = (unsigned long)priv;
4089 priv->statistics_periodic.function = iwl4965_bg_statistics_periodic;
4090
4091 tasklet_init(&priv->irq_tasklet, (void (*)(unsigned long))
4092 iwl4965_irq_tasklet, (unsigned long)priv);
4093 }
4094
4095 static void iwl_cancel_deferred_work(struct iwl_priv *priv)
4096 {
4097 if (priv->cfg->ops->lib->cancel_deferred_work)
4098 priv->cfg->ops->lib->cancel_deferred_work(priv);
4099
4100 cancel_delayed_work_sync(&priv->init_alive_start);
4101 cancel_delayed_work(&priv->scan_check);
4102 cancel_delayed_work_sync(&priv->set_power_save);
4103 cancel_delayed_work(&priv->alive_start);
4104 cancel_work_sync(&priv->beacon_update);
4105 del_timer_sync(&priv->statistics_periodic);
4106 }
4107
4108 static struct attribute *iwl4965_sysfs_entries[] = {
4109 &dev_attr_channels.attr,
4110 &dev_attr_flags.attr,
4111 &dev_attr_filter_flags.attr,
4112 #ifdef CONFIG_IWLAGN_SPECTRUM_MEASUREMENT
4113 &dev_attr_measurement.attr,
4114 #endif
4115 &dev_attr_power_level.attr,
4116 &dev_attr_retry_rate.attr,
4117 &dev_attr_statistics.attr,
4118 &dev_attr_status.attr,
4119 &dev_attr_temperature.attr,
4120 &dev_attr_tx_power.attr,
4121 #ifdef CONFIG_IWLWIFI_DEBUG
4122 &dev_attr_debug_level.attr,
4123 #endif
4124 &dev_attr_version.attr,
4125
4126 NULL
4127 };
4128
4129 static struct attribute_group iwl4965_attribute_group = {
4130 .name = NULL, /* put in device directory */
4131 .attrs = iwl4965_sysfs_entries,
4132 };
4133
4134 static struct ieee80211_ops iwl4965_hw_ops = {
4135 .tx = iwl4965_mac_tx,
4136 .start = iwl4965_mac_start,
4137 .stop = iwl4965_mac_stop,
4138 .add_interface = iwl4965_mac_add_interface,
4139 .remove_interface = iwl4965_mac_remove_interface,
4140 .config = iwl4965_mac_config,
4141 .config_interface = iwl4965_mac_config_interface,
4142 .configure_filter = iwl4965_configure_filter,
4143 .set_key = iwl4965_mac_set_key,
4144 .update_tkip_key = iwl4965_mac_update_tkip_key,
4145 .get_stats = iwl4965_mac_get_stats,
4146 .get_tx_stats = iwl4965_mac_get_tx_stats,
4147 .conf_tx = iwl4965_mac_conf_tx,
4148 .reset_tsf = iwl4965_mac_reset_tsf,
4149 .bss_info_changed = iwl4965_bss_info_changed,
4150 .ampdu_action = iwl4965_mac_ampdu_action,
4151 .hw_scan = iwl_mac_hw_scan
4152 };
4153
4154 static int iwl4965_pci_probe(struct pci_dev *pdev, const struct pci_device_id *ent)
4155 {
4156 int err = 0;
4157 struct iwl_priv *priv;
4158 struct ieee80211_hw *hw;
4159 struct iwl_cfg *cfg = (struct iwl_cfg *)(ent->driver_data);
4160 unsigned long flags;
4161
4162 /************************
4163 * 1. Allocating HW data
4164 ************************/
4165
4166 /* Disabling hardware scan means that mac80211 will perform scans
4167 * "the hard way", rather than using device's scan. */
4168 if (cfg->mod_params->disable_hw_scan) {
4169 if (cfg->mod_params->debug & IWL_DL_INFO)
4170 dev_printk(KERN_DEBUG, &(pdev->dev),
4171 "Disabling hw_scan\n");
4172 iwl4965_hw_ops.hw_scan = NULL;
4173 }
4174
4175 hw = iwl_alloc_all(cfg, &iwl4965_hw_ops);
4176 if (!hw) {
4177 err = -ENOMEM;
4178 goto out;
4179 }
4180 priv = hw->priv;
4181 /* At this point both hw and priv are allocated. */
4182
4183 SET_IEEE80211_DEV(hw, &pdev->dev);
4184
4185 IWL_DEBUG_INFO("*** LOAD DRIVER ***\n");
4186 priv->cfg = cfg;
4187 priv->pci_dev = pdev;
4188
4189 #ifdef CONFIG_IWLWIFI_DEBUG
4190 priv->debug_level = priv->cfg->mod_params->debug;
4191 atomic_set(&priv->restrict_refcnt, 0);
4192 #endif
4193
4194 /**************************
4195 * 2. Initializing PCI bus
4196 **************************/
4197 if (pci_enable_device(pdev)) {
4198 err = -ENODEV;
4199 goto out_ieee80211_free_hw;
4200 }
4201
4202 pci_set_master(pdev);
4203
4204 err = pci_set_dma_mask(pdev, DMA_BIT_MASK(36));
4205 if (!err)
4206 err = pci_set_consistent_dma_mask(pdev, DMA_BIT_MASK(36));
4207 if (err) {
4208 err = pci_set_dma_mask(pdev, DMA_BIT_MASK(32));
4209 if (!err)
4210 err = pci_set_consistent_dma_mask(pdev, DMA_BIT_MASK(32));
4211 /* both attempts failed: */
4212 if (err) {
4213 printk(KERN_WARNING "%s: No suitable DMA available.\n",
4214 DRV_NAME);
4215 goto out_pci_disable_device;
4216 }
4217 }
4218
4219 err = pci_request_regions(pdev, DRV_NAME);
4220 if (err)
4221 goto out_pci_disable_device;
4222
4223 pci_set_drvdata(pdev, priv);
4224
4225
4226 /***********************
4227 * 3. Read REV register
4228 ***********************/
4229 priv->hw_base = pci_iomap(pdev, 0, 0);
4230 if (!priv->hw_base) {
4231 err = -ENODEV;
4232 goto out_pci_release_regions;
4233 }
4234
4235 IWL_DEBUG_INFO("pci_resource_len = 0x%08llx\n",
4236 (unsigned long long) pci_resource_len(pdev, 0));
4237 IWL_DEBUG_INFO("pci_resource_base = %p\n", priv->hw_base);
4238
4239 iwl_hw_detect(priv);
4240 printk(KERN_INFO DRV_NAME
4241 ": Detected Intel Wireless WiFi Link %s REV=0x%X\n",
4242 priv->cfg->name, priv->hw_rev);
4243
4244 /* We disable the RETRY_TIMEOUT register (0x41) to keep
4245 * PCI Tx retries from interfering with C3 CPU state */
4246 pci_write_config_byte(pdev, PCI_CFG_RETRY_TIMEOUT, 0x00);
4247
4248 /* amp init */
4249 err = priv->cfg->ops->lib->apm_ops.init(priv);
4250 if (err < 0) {
4251 IWL_DEBUG_INFO("Failed to init APMG\n");
4252 goto out_iounmap;
4253 }
4254 /*****************
4255 * 4. Read EEPROM
4256 *****************/
4257 /* Read the EEPROM */
4258 err = iwl_eeprom_init(priv);
4259 if (err) {
4260 IWL_ERROR("Unable to init EEPROM\n");
4261 goto out_iounmap;
4262 }
4263 err = iwl_eeprom_check_version(priv);
4264 if (err)
4265 goto out_iounmap;
4266
4267 /* extract MAC Address */
4268 iwl_eeprom_get_mac(priv, priv->mac_addr);
4269 IWL_DEBUG_INFO("MAC address: %pM\n", priv->mac_addr);
4270 SET_IEEE80211_PERM_ADDR(priv->hw, priv->mac_addr);
4271
4272 /************************
4273 * 5. Setup HW constants
4274 ************************/
4275 if (iwl_set_hw_params(priv)) {
4276 IWL_ERROR("failed to set hw parameters\n");
4277 goto out_free_eeprom;
4278 }
4279
4280 /*******************
4281 * 6. Setup priv
4282 *******************/
4283
4284 err = iwl_init_drv(priv);
4285 if (err)
4286 goto out_free_eeprom;
4287 /* At this point both hw and priv are initialized. */
4288
4289 /**********************************
4290 * 7. Initialize module parameters
4291 **********************************/
4292
4293 /* Disable radio (SW RF KILL) via parameter when loading driver */
4294 if (priv->cfg->mod_params->disable) {
4295 set_bit(STATUS_RF_KILL_SW, &priv->status);
4296 IWL_DEBUG_INFO("Radio disabled.\n");
4297 }
4298
4299 /********************
4300 * 8. Setup services
4301 ********************/
4302 spin_lock_irqsave(&priv->lock, flags);
4303 iwl4965_disable_interrupts(priv);
4304 spin_unlock_irqrestore(&priv->lock, flags);
4305
4306 err = sysfs_create_group(&pdev->dev.kobj, &iwl4965_attribute_group);
4307 if (err) {
4308 IWL_ERROR("failed to create sysfs device attributes\n");
4309 goto out_uninit_drv;
4310 }
4311
4312
4313 iwl_setup_deferred_work(priv);
4314 iwl_setup_rx_handlers(priv);
4315
4316 /********************
4317 * 9. Conclude
4318 ********************/
4319 pci_save_state(pdev);
4320 pci_disable_device(pdev);
4321
4322 /**********************************
4323 * 10. Setup and register mac80211
4324 **********************************/
4325
4326 err = iwl_setup_mac(priv);
4327 if (err)
4328 goto out_remove_sysfs;
4329
4330 err = iwl_dbgfs_register(priv, DRV_NAME);
4331 if (err)
4332 IWL_ERROR("failed to create debugfs files\n");
4333
4334 err = iwl_rfkill_init(priv);
4335 if (err)
4336 IWL_ERROR("Unable to initialize RFKILL system. "
4337 "Ignoring error: %d\n", err);
4338 iwl_power_initialize(priv);
4339 return 0;
4340
4341 out_remove_sysfs:
4342 sysfs_remove_group(&pdev->dev.kobj, &iwl4965_attribute_group);
4343 out_uninit_drv:
4344 iwl_uninit_drv(priv);
4345 out_free_eeprom:
4346 iwl_eeprom_free(priv);
4347 out_iounmap:
4348 pci_iounmap(pdev, priv->hw_base);
4349 out_pci_release_regions:
4350 pci_release_regions(pdev);
4351 pci_set_drvdata(pdev, NULL);
4352 out_pci_disable_device:
4353 pci_disable_device(pdev);
4354 out_ieee80211_free_hw:
4355 ieee80211_free_hw(priv->hw);
4356 out:
4357 return err;
4358 }
4359
4360 static void __devexit iwl4965_pci_remove(struct pci_dev *pdev)
4361 {
4362 struct iwl_priv *priv = pci_get_drvdata(pdev);
4363 unsigned long flags;
4364
4365 if (!priv)
4366 return;
4367
4368 IWL_DEBUG_INFO("*** UNLOAD DRIVER ***\n");
4369
4370 iwl_dbgfs_unregister(priv);
4371 sysfs_remove_group(&pdev->dev.kobj, &iwl4965_attribute_group);
4372
4373 /* ieee80211_unregister_hw call wil cause iwl4965_mac_stop to
4374 * to be called and iwl4965_down since we are removing the device
4375 * we need to set STATUS_EXIT_PENDING bit.
4376 */
4377 set_bit(STATUS_EXIT_PENDING, &priv->status);
4378 if (priv->mac80211_registered) {
4379 ieee80211_unregister_hw(priv->hw);
4380 priv->mac80211_registered = 0;
4381 } else {
4382 iwl4965_down(priv);
4383 }
4384
4385 /* make sure we flush any pending irq or
4386 * tasklet for the driver
4387 */
4388 spin_lock_irqsave(&priv->lock, flags);
4389 iwl4965_disable_interrupts(priv);
4390 spin_unlock_irqrestore(&priv->lock, flags);
4391
4392 iwl_synchronize_irq(priv);
4393
4394 iwl_rfkill_unregister(priv);
4395 iwl4965_dealloc_ucode_pci(priv);
4396
4397 if (priv->rxq.bd)
4398 iwl_rx_queue_free(priv, &priv->rxq);
4399 iwl_hw_txq_ctx_free(priv);
4400
4401 iwl_clear_stations_table(priv);
4402 iwl_eeprom_free(priv);
4403
4404
4405 /*netif_stop_queue(dev); */
4406 flush_workqueue(priv->workqueue);
4407
4408 /* ieee80211_unregister_hw calls iwl4965_mac_stop, which flushes
4409 * priv->workqueue... so we can't take down the workqueue
4410 * until now... */
4411 destroy_workqueue(priv->workqueue);
4412 priv->workqueue = NULL;
4413
4414 pci_iounmap(pdev, priv->hw_base);
4415 pci_release_regions(pdev);
4416 pci_disable_device(pdev);
4417 pci_set_drvdata(pdev, NULL);
4418
4419 iwl_uninit_drv(priv);
4420
4421 if (priv->ibss_beacon)
4422 dev_kfree_skb(priv->ibss_beacon);
4423
4424 ieee80211_free_hw(priv->hw);
4425 }
4426
4427 #ifdef CONFIG_PM
4428
4429 static int iwl4965_pci_suspend(struct pci_dev *pdev, pm_message_t state)
4430 {
4431 struct iwl_priv *priv = pci_get_drvdata(pdev);
4432
4433 if (priv->is_open) {
4434 set_bit(STATUS_IN_SUSPEND, &priv->status);
4435 iwl4965_mac_stop(priv->hw);
4436 priv->is_open = 1;
4437 }
4438
4439 pci_set_power_state(pdev, PCI_D3hot);
4440
4441 return 0;
4442 }
4443
4444 static int iwl4965_pci_resume(struct pci_dev *pdev)
4445 {
4446 struct iwl_priv *priv = pci_get_drvdata(pdev);
4447
4448 pci_set_power_state(pdev, PCI_D0);
4449
4450 if (priv->is_open)
4451 iwl4965_mac_start(priv->hw);
4452
4453 clear_bit(STATUS_IN_SUSPEND, &priv->status);
4454 return 0;
4455 }
4456
4457 #endif /* CONFIG_PM */
4458
4459 /*****************************************************************************
4460 *
4461 * driver and module entry point
4462 *
4463 *****************************************************************************/
4464
4465 /* Hardware specific file defines the PCI IDs table for that hardware module */
4466 static struct pci_device_id iwl_hw_card_ids[] = {
4467 #ifdef CONFIG_IWL4965
4468 {IWL_PCI_DEVICE(0x4229, PCI_ANY_ID, iwl4965_agn_cfg)},
4469 {IWL_PCI_DEVICE(0x4230, PCI_ANY_ID, iwl4965_agn_cfg)},
4470 #endif /* CONFIG_IWL4965 */
4471 #ifdef CONFIG_IWL5000
4472 {IWL_PCI_DEVICE(0x4232, 0x1205, iwl5100_bg_cfg)},
4473 {IWL_PCI_DEVICE(0x4232, 0x1305, iwl5100_bg_cfg)},
4474 {IWL_PCI_DEVICE(0x4232, 0x1206, iwl5100_abg_cfg)},
4475 {IWL_PCI_DEVICE(0x4232, 0x1306, iwl5100_abg_cfg)},
4476 {IWL_PCI_DEVICE(0x4232, 0x1326, iwl5100_abg_cfg)},
4477 {IWL_PCI_DEVICE(0x4237, 0x1216, iwl5100_abg_cfg)},
4478 {IWL_PCI_DEVICE(0x4232, PCI_ANY_ID, iwl5100_agn_cfg)},
4479 {IWL_PCI_DEVICE(0x4235, PCI_ANY_ID, iwl5300_agn_cfg)},
4480 {IWL_PCI_DEVICE(0x4236, PCI_ANY_ID, iwl5300_agn_cfg)},
4481 {IWL_PCI_DEVICE(0x4237, PCI_ANY_ID, iwl5100_agn_cfg)},
4482 /* 5350 WiFi/WiMax */
4483 {IWL_PCI_DEVICE(0x423A, 0x1001, iwl5350_agn_cfg)},
4484 {IWL_PCI_DEVICE(0x423A, 0x1021, iwl5350_agn_cfg)},
4485 {IWL_PCI_DEVICE(0x423B, 0x1011, iwl5350_agn_cfg)},
4486 #endif /* CONFIG_IWL5000 */
4487 {0}
4488 };
4489 MODULE_DEVICE_TABLE(pci, iwl_hw_card_ids);
4490
4491 static struct pci_driver iwl_driver = {
4492 .name = DRV_NAME,
4493 .id_table = iwl_hw_card_ids,
4494 .probe = iwl4965_pci_probe,
4495 .remove = __devexit_p(iwl4965_pci_remove),
4496 #ifdef CONFIG_PM
4497 .suspend = iwl4965_pci_suspend,
4498 .resume = iwl4965_pci_resume,
4499 #endif
4500 };
4501
4502 static int __init iwl4965_init(void)
4503 {
4504
4505 int ret;
4506 printk(KERN_INFO DRV_NAME ": " DRV_DESCRIPTION ", " DRV_VERSION "\n");
4507 printk(KERN_INFO DRV_NAME ": " DRV_COPYRIGHT "\n");
4508
4509 ret = iwlagn_rate_control_register();
4510 if (ret) {
4511 IWL_ERROR("Unable to register rate control algorithm: %d\n", ret);
4512 return ret;
4513 }
4514
4515 ret = pci_register_driver(&iwl_driver);
4516 if (ret) {
4517 IWL_ERROR("Unable to initialize PCI module\n");
4518 goto error_register;
4519 }
4520
4521 return ret;
4522
4523 error_register:
4524 iwlagn_rate_control_unregister();
4525 return ret;
4526 }
4527
4528 static void __exit iwl4965_exit(void)
4529 {
4530 pci_unregister_driver(&iwl_driver);
4531 iwlagn_rate_control_unregister();
4532 }
4533
4534 module_exit(iwl4965_exit);
4535 module_init(iwl4965_init);
Linux kernel - Deliverables
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