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