?  search:
summary | log | graphiclog1 | graphiclog2 | commit | commitdiff | tree | refs | edit | fork
blame | history | raw | HEAD
iwlwifi: rename generic iwlagn functions that had a HW specific name
[linux-2.6/linux-acpi-2.6/ibm-acpi-2.6.git] / drivers / net / wireless / iwlwifi / iwl-agn.c
blobf3e4cf5a82e0bbdc5b47b899d437d47629581d03
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 iwl_send_statistics_request(priv, CMD_ASYNC);
1157 }
1158
1159 static void iwl_rx_beacon_notif(struct iwl_priv *priv,
1160 struct iwl_rx_mem_buffer *rxb)
1161 {
1162 #ifdef CONFIG_IWLWIFI_DEBUG
1163 struct iwl_rx_packet *pkt = (struct iwl_rx_packet *)rxb->skb->data;
1164 struct iwl4965_beacon_notif *beacon = &(pkt->u.beacon_status);
1165 u8 rate = iwl_hw_get_rate(beacon->beacon_notify_hdr.rate_n_flags);
1166
1167 IWL_DEBUG_RX("beacon status %x retries %d iss %d "
1168 "tsf %d %d rate %d\n",
1169 le32_to_cpu(beacon->beacon_notify_hdr.u.status) & TX_STATUS_MSK,
1170 beacon->beacon_notify_hdr.failure_frame,
1171 le32_to_cpu(beacon->ibss_mgr_status),
1172 le32_to_cpu(beacon->high_tsf),
1173 le32_to_cpu(beacon->low_tsf), rate);
1174 #endif
1175
1176 if ((priv->iw_mode == NL80211_IFTYPE_AP) &&
1177 (!test_bit(STATUS_EXIT_PENDING, &priv->status)))
1178 queue_work(priv->workqueue, &priv->beacon_update);
1179 }
1180
1181 /* Handle notification from uCode that card's power state is changing
1182 * due to software, hardware, or critical temperature RFKILL */
1183 static void iwl_rx_card_state_notif(struct iwl_priv *priv,
1184 struct iwl_rx_mem_buffer *rxb)
1185 {
1186 struct iwl_rx_packet *pkt = (struct iwl_rx_packet *)rxb->skb->data;
1187 u32 flags = le32_to_cpu(pkt->u.card_state_notif.flags);
1188 unsigned long status = priv->status;
1189
1190 IWL_DEBUG_RF_KILL("Card state received: HW:%s SW:%s\n",
1191 (flags & HW_CARD_DISABLED) ? "Kill" : "On",
1192 (flags & SW_CARD_DISABLED) ? "Kill" : "On");
1193
1194 if (flags & (SW_CARD_DISABLED | HW_CARD_DISABLED |
1195 RF_CARD_DISABLED)) {
1196
1197 iwl_write32(priv, CSR_UCODE_DRV_GP1_SET,
1198 CSR_UCODE_DRV_GP1_BIT_CMD_BLOCKED);
1199
1200 if (!iwl_grab_nic_access(priv)) {
1201 iwl_write_direct32(
1202 priv, HBUS_TARG_MBX_C,
1203 HBUS_TARG_MBX_C_REG_BIT_CMD_BLOCKED);
1204
1205 iwl_release_nic_access(priv);
1206 }
1207
1208 if (!(flags & RXON_CARD_DISABLED)) {
1209 iwl_write32(priv, CSR_UCODE_DRV_GP1_CLR,
1210 CSR_UCODE_DRV_GP1_BIT_CMD_BLOCKED);
1211 if (!iwl_grab_nic_access(priv)) {
1212 iwl_write_direct32(
1213 priv, HBUS_TARG_MBX_C,
1214 HBUS_TARG_MBX_C_REG_BIT_CMD_BLOCKED);
1215
1216 iwl_release_nic_access(priv);
1217 }
1218 }
1219
1220 if (flags & RF_CARD_DISABLED) {
1221 iwl_write32(priv, CSR_UCODE_DRV_GP1_SET,
1222 CSR_UCODE_DRV_GP1_REG_BIT_CT_KILL_EXIT);
1223 iwl_read32(priv, CSR_UCODE_DRV_GP1);
1224 if (!iwl_grab_nic_access(priv))
1225 iwl_release_nic_access(priv);
1226 }
1227 }
1228
1229 if (flags & HW_CARD_DISABLED)
1230 set_bit(STATUS_RF_KILL_HW, &priv->status);
1231 else
1232 clear_bit(STATUS_RF_KILL_HW, &priv->status);
1233
1234
1235 if (flags & SW_CARD_DISABLED)
1236 set_bit(STATUS_RF_KILL_SW, &priv->status);
1237 else
1238 clear_bit(STATUS_RF_KILL_SW, &priv->status);
1239
1240 if (!(flags & RXON_CARD_DISABLED))
1241 iwl_scan_cancel(priv);
1242
1243 if ((test_bit(STATUS_RF_KILL_HW, &status) !=
1244 test_bit(STATUS_RF_KILL_HW, &priv->status)) ||
1245 (test_bit(STATUS_RF_KILL_SW, &status) !=
1246 test_bit(STATUS_RF_KILL_SW, &priv->status)))
1247 queue_work(priv->workqueue, &priv->rf_kill);
1248 else
1249 wake_up_interruptible(&priv->wait_command_queue);
1250 }
1251
1252 int iwl_set_pwr_src(struct iwl_priv *priv, enum iwl_pwr_src src)
1253 {
1254 int ret;
1255 unsigned long flags;
1256
1257 spin_lock_irqsave(&priv->lock, flags);
1258 ret = iwl_grab_nic_access(priv);
1259 if (ret)
1260 goto err;
1261
1262 if (src == IWL_PWR_SRC_VAUX) {
1263 u32 val;
1264 ret = pci_read_config_dword(priv->pci_dev, PCI_CFG_POWER_SOURCE,
1265 &val);
1266
1267 if (val & PCI_CFG_PMC_PME_FROM_D3COLD_SUPPORT)
1268 iwl_set_bits_mask_prph(priv, APMG_PS_CTRL_REG,
1269 APMG_PS_CTRL_VAL_PWR_SRC_VAUX,
1270 ~APMG_PS_CTRL_MSK_PWR_SRC);
1271 } else {
1272 iwl_set_bits_mask_prph(priv, APMG_PS_CTRL_REG,
1273 APMG_PS_CTRL_VAL_PWR_SRC_VMAIN,
1274 ~APMG_PS_CTRL_MSK_PWR_SRC);
1275 }
1276
1277 iwl_release_nic_access(priv);
1278 err:
1279 spin_unlock_irqrestore(&priv->lock, flags);
1280 return ret;
1281 }
1282
1283 /**
1284 * iwl_setup_rx_handlers - Initialize Rx handler callbacks
1285 *
1286 * Setup the RX handlers for each of the reply types sent from the uCode
1287 * to the host.
1288 *
1289 * This function chains into the hardware specific files for them to setup
1290 * any hardware specific handlers as well.
1291 */
1292 static void iwl_setup_rx_handlers(struct iwl_priv *priv)
1293 {
1294 priv->rx_handlers[REPLY_ALIVE] = iwl_rx_reply_alive;
1295 priv->rx_handlers[REPLY_ERROR] = iwl_rx_reply_error;
1296 priv->rx_handlers[CHANNEL_SWITCH_NOTIFICATION] = iwl_rx_csa;
1297 priv->rx_handlers[SPECTRUM_MEASURE_NOTIFICATION] =
1298 iwl_rx_spectrum_measure_notif;
1299 priv->rx_handlers[PM_SLEEP_NOTIFICATION] = iwl_rx_pm_sleep_notif;
1300 priv->rx_handlers[PM_DEBUG_STATISTIC_NOTIFIC] =
1301 iwl_rx_pm_debug_statistics_notif;
1302 priv->rx_handlers[BEACON_NOTIFICATION] = iwl_rx_beacon_notif;
1303
1304 /*
1305 * The same handler is used for both the REPLY to a discrete
1306 * statistics request from the host as well as for the periodic
1307 * statistics notifications (after received beacons) from the uCode.
1308 */
1309 priv->rx_handlers[REPLY_STATISTICS_CMD] = iwl_rx_statistics;
1310 priv->rx_handlers[STATISTICS_NOTIFICATION] = iwl_rx_statistics;
1311
1312 iwl_setup_rx_scan_handlers(priv);
1313
1314 /* status change handler */
1315 priv->rx_handlers[CARD_STATE_NOTIFICATION] = iwl_rx_card_state_notif;
1316
1317 priv->rx_handlers[MISSED_BEACONS_NOTIFICATION] =
1318 iwl_rx_missed_beacon_notif;
1319 /* Rx handlers */
1320 priv->rx_handlers[REPLY_RX_PHY_CMD] = iwl_rx_reply_rx_phy;
1321 priv->rx_handlers[REPLY_RX_MPDU_CMD] = iwl_rx_reply_rx;
1322 /* block ack */
1323 priv->rx_handlers[REPLY_COMPRESSED_BA] = iwl_rx_reply_compressed_ba;
1324 /* Set up hardware specific Rx handlers */
1325 priv->cfg->ops->lib->rx_handler_setup(priv);
1326 }
1327
1328 /*
1329 * this should be called while priv->lock is locked
1330 */
1331 static void __iwl_rx_replenish(struct iwl_priv *priv)
1332 {
1333 iwl_rx_allocate(priv);
1334 iwl_rx_queue_restock(priv);
1335 }
1336
1337
1338 /**
1339 * iwl_rx_handle - Main entry function for receiving responses from uCode
1340 *
1341 * Uses the priv->rx_handlers callback function array to invoke
1342 * the appropriate handlers, including command responses,
1343 * frame-received notifications, and other notifications.
1344 */
1345 void iwl_rx_handle(struct iwl_priv *priv)
1346 {
1347 struct iwl_rx_mem_buffer *rxb;
1348 struct iwl_rx_packet *pkt;
1349 struct iwl_rx_queue *rxq = &priv->rxq;
1350 u32 r, i;
1351 int reclaim;
1352 unsigned long flags;
1353 u8 fill_rx = 0;
1354 u32 count = 8;
1355
1356 /* uCode's read index (stored in shared DRAM) indicates the last Rx
1357 * buffer that the driver may process (last buffer filled by ucode). */
1358 r = priv->cfg->ops->lib->shared_mem_rx_idx(priv);
1359 i = rxq->read;
1360
1361 /* Rx interrupt, but nothing sent from uCode */
1362 if (i == r)
1363 IWL_DEBUG(IWL_DL_RX, "r = %d, i = %d\n", r, i);
1364
1365 if (iwl_rx_queue_space(rxq) > (RX_QUEUE_SIZE / 2))
1366 fill_rx = 1;
1367
1368 while (i != r) {
1369 rxb = rxq->queue[i];
1370
1371 /* If an RXB doesn't have a Rx queue slot associated with it,
1372 * then a bug has been introduced in the queue refilling
1373 * routines -- catch it here */
1374 BUG_ON(rxb == NULL);
1375
1376 rxq->queue[i] = NULL;
1377
1378 pci_dma_sync_single_for_cpu(priv->pci_dev, rxb->dma_addr,
1379 priv->hw_params.rx_buf_size,
1380 PCI_DMA_FROMDEVICE);
1381 pkt = (struct iwl_rx_packet *)rxb->skb->data;
1382
1383 /* Reclaim a command buffer only if this packet is a response
1384 * to a (driver-originated) command.
1385 * If the packet (e.g. Rx frame) originated from uCode,
1386 * there is no command buffer to reclaim.
1387 * Ucode should set SEQ_RX_FRAME bit if ucode-originated,
1388 * but apparently a few don't get set; catch them here. */
1389 reclaim = !(pkt->hdr.sequence & SEQ_RX_FRAME) &&
1390 (pkt->hdr.cmd != REPLY_RX_PHY_CMD) &&
1391 (pkt->hdr.cmd != REPLY_RX) &&
1392 (pkt->hdr.cmd != REPLY_RX_MPDU_CMD) &&
1393 (pkt->hdr.cmd != REPLY_COMPRESSED_BA) &&
1394 (pkt->hdr.cmd != STATISTICS_NOTIFICATION) &&
1395 (pkt->hdr.cmd != REPLY_TX);
1396
1397 /* Based on type of command response or notification,
1398 * handle those that need handling via function in
1399 * rx_handlers table. See iwl_setup_rx_handlers() */
1400 if (priv->rx_handlers[pkt->hdr.cmd]) {
1401 IWL_DEBUG(IWL_DL_RX, "r = %d, i = %d, %s, 0x%02x\n", r,
1402 i, get_cmd_string(pkt->hdr.cmd), pkt->hdr.cmd);
1403 priv->rx_handlers[pkt->hdr.cmd] (priv, rxb);
1404 } else {
1405 /* No handling needed */
1406 IWL_DEBUG(IWL_DL_RX,
1407 "r %d i %d No handler needed for %s, 0x%02x\n",
1408 r, i, get_cmd_string(pkt->hdr.cmd),
1409 pkt->hdr.cmd);
1410 }
1411
1412 if (reclaim) {
1413 /* Invoke any callbacks, transfer the skb to caller, and
1414 * fire off the (possibly) blocking iwl_send_cmd()
1415 * as we reclaim the driver command queue */
1416 if (rxb && rxb->skb)
1417 iwl_tx_cmd_complete(priv, rxb);
1418 else
1419 IWL_WARNING("Claim null rxb?\n");
1420 }
1421
1422 /* For now we just don't re-use anything. We can tweak this
1423 * later to try and re-use notification packets and SKBs that
1424 * fail to Rx correctly */
1425 if (rxb->skb != NULL) {
1426 priv->alloc_rxb_skb--;
1427 dev_kfree_skb_any(rxb->skb);
1428 rxb->skb = NULL;
1429 }
1430
1431 pci_unmap_single(priv->pci_dev, rxb->dma_addr,
1432 priv->hw_params.rx_buf_size,
1433 PCI_DMA_FROMDEVICE);
1434 spin_lock_irqsave(&rxq->lock, flags);
1435 list_add_tail(&rxb->list, &priv->rxq.rx_used);
1436 spin_unlock_irqrestore(&rxq->lock, flags);
1437 i = (i + 1) & RX_QUEUE_MASK;
1438 /* If there are a lot of unused frames,
1439 * restock the Rx queue so ucode wont assert. */
1440 if (fill_rx) {
1441 count++;
1442 if (count >= 8) {
1443 priv->rxq.read = i;
1444 __iwl_rx_replenish(priv);
1445 count = 0;
1446 }
1447 }
1448 }
1449
1450 /* Backtrack one entry */
1451 priv->rxq.read = i;
1452 iwl_rx_queue_restock(priv);
1453 }
1454
1455 #ifdef CONFIG_IWLWIFI_DEBUG
1456 static void iwl_print_rx_config_cmd(struct iwl_priv *priv)
1457 {
1458 struct iwl_rxon_cmd *rxon = &priv->staging_rxon;
1459
1460 IWL_DEBUG_RADIO("RX CONFIG:\n");
1461 iwl_print_hex_dump(priv, IWL_DL_RADIO, (u8 *) rxon, sizeof(*rxon));
1462 IWL_DEBUG_RADIO("u16 channel: 0x%x\n", le16_to_cpu(rxon->channel));
1463 IWL_DEBUG_RADIO("u32 flags: 0x%08X\n", le32_to_cpu(rxon->flags));
1464 IWL_DEBUG_RADIO("u32 filter_flags: 0x%08x\n",
1465 le32_to_cpu(rxon->filter_flags));
1466 IWL_DEBUG_RADIO("u8 dev_type: 0x%x\n", rxon->dev_type);
1467 IWL_DEBUG_RADIO("u8 ofdm_basic_rates: 0x%02x\n",
1468 rxon->ofdm_basic_rates);
1469 IWL_DEBUG_RADIO("u8 cck_basic_rates: 0x%02x\n", rxon->cck_basic_rates);
1470 IWL_DEBUG_RADIO("u8[6] node_addr: %pM\n", rxon->node_addr);
1471 IWL_DEBUG_RADIO("u8[6] bssid_addr: %pM\n", rxon->bssid_addr);
1472 IWL_DEBUG_RADIO("u16 assoc_id: 0x%x\n", le16_to_cpu(rxon->assoc_id));
1473 }
1474 #endif
1475
1476 static void iwl_enable_interrupts(struct iwl_priv *priv)
1477 {
1478 IWL_DEBUG_ISR("Enabling interrupts\n");
1479 set_bit(STATUS_INT_ENABLED, &priv->status);
1480 iwl_write32(priv, CSR_INT_MASK, CSR_INI_SET_MASK);
1481 }
1482
1483 /* call this function to flush any scheduled tasklet */
1484 static inline void iwl_synchronize_irq(struct iwl_priv *priv)
1485 {
1486 /* wait to make sure we flush pending tasklet*/
1487 synchronize_irq(priv->pci_dev->irq);
1488 tasklet_kill(&priv->irq_tasklet);
1489 }
1490
1491 static inline void iwl_disable_interrupts(struct iwl_priv *priv)
1492 {
1493 clear_bit(STATUS_INT_ENABLED, &priv->status);
1494
1495 /* disable interrupts from uCode/NIC to host */
1496 iwl_write32(priv, CSR_INT_MASK, 0x00000000);
1497
1498 /* acknowledge/clear/reset any interrupts still pending
1499 * from uCode or flow handler (Rx/Tx DMA) */
1500 iwl_write32(priv, CSR_INT, 0xffffffff);
1501 iwl_write32(priv, CSR_FH_INT_STATUS, 0xffffffff);
1502 IWL_DEBUG_ISR("Disabled interrupts\n");
1503 }
1504
1505
1506 /**
1507 * iwl_irq_handle_error - called for HW or SW error interrupt from card
1508 */
1509 static void iwl_irq_handle_error(struct iwl_priv *priv)
1510 {
1511 /* Set the FW error flag -- cleared on iwl_down */
1512 set_bit(STATUS_FW_ERROR, &priv->status);
1513
1514 /* Cancel currently queued command. */
1515 clear_bit(STATUS_HCMD_ACTIVE, &priv->status);
1516
1517 #ifdef CONFIG_IWLWIFI_DEBUG
1518 if (priv->debug_level & IWL_DL_FW_ERRORS) {
1519 iwl_dump_nic_error_log(priv);
1520 iwl_dump_nic_event_log(priv);
1521 iwl_print_rx_config_cmd(priv);
1522 }
1523 #endif
1524
1525 wake_up_interruptible(&priv->wait_command_queue);
1526
1527 /* Keep the restart process from trying to send host
1528 * commands by clearing the INIT status bit */
1529 clear_bit(STATUS_READY, &priv->status);
1530
1531 if (!test_bit(STATUS_EXIT_PENDING, &priv->status)) {
1532 IWL_DEBUG(IWL_DL_FW_ERRORS,
1533 "Restarting adapter due to uCode error.\n");
1534
1535 if (iwl_is_associated(priv)) {
1536 memcpy(&priv->recovery_rxon, &priv->active_rxon,
1537 sizeof(priv->recovery_rxon));
1538 priv->error_recovering = 1;
1539 }
1540 if (priv->cfg->mod_params->restart_fw)
1541 queue_work(priv->workqueue, &priv->restart);
1542 }
1543 }
1544
1545 static void iwl_error_recovery(struct iwl_priv *priv)
1546 {
1547 unsigned long flags;
1548
1549 memcpy(&priv->staging_rxon, &priv->recovery_rxon,
1550 sizeof(priv->staging_rxon));
1551 priv->staging_rxon.filter_flags &= ~RXON_FILTER_ASSOC_MSK;
1552 iwl_commit_rxon(priv);
1553
1554 iwl_rxon_add_station(priv, priv->bssid, 1);
1555
1556 spin_lock_irqsave(&priv->lock, flags);
1557 priv->assoc_id = le16_to_cpu(priv->staging_rxon.assoc_id);
1558 priv->error_recovering = 0;
1559 spin_unlock_irqrestore(&priv->lock, flags);
1560 }
1561
1562 static void iwl_irq_tasklet(struct iwl_priv *priv)
1563 {
1564 u32 inta, handled = 0;
1565 u32 inta_fh;
1566 unsigned long flags;
1567 #ifdef CONFIG_IWLWIFI_DEBUG
1568 u32 inta_mask;
1569 #endif
1570
1571 spin_lock_irqsave(&priv->lock, flags);
1572
1573 /* Ack/clear/reset pending uCode interrupts.
1574 * Note: Some bits in CSR_INT are "OR" of bits in CSR_FH_INT_STATUS,
1575 * and will clear only when CSR_FH_INT_STATUS gets cleared. */
1576 inta = iwl_read32(priv, CSR_INT);
1577 iwl_write32(priv, CSR_INT, inta);
1578
1579 /* Ack/clear/reset pending flow-handler (DMA) interrupts.
1580 * Any new interrupts that happen after this, either while we're
1581 * in this tasklet, or later, will show up in next ISR/tasklet. */
1582 inta_fh = iwl_read32(priv, CSR_FH_INT_STATUS);
1583 iwl_write32(priv, CSR_FH_INT_STATUS, inta_fh);
1584
1585 #ifdef CONFIG_IWLWIFI_DEBUG
1586 if (priv->debug_level & IWL_DL_ISR) {
1587 /* just for debug */
1588 inta_mask = iwl_read32(priv, CSR_INT_MASK);
1589 IWL_DEBUG_ISR("inta 0x%08x, enabled 0x%08x, fh 0x%08x\n",
1590 inta, inta_mask, inta_fh);
1591 }
1592 #endif
1593
1594 /* Since CSR_INT and CSR_FH_INT_STATUS reads and clears are not
1595 * atomic, make sure that inta covers all the interrupts that
1596 * we've discovered, even if FH interrupt came in just after
1597 * reading CSR_INT. */
1598 if (inta_fh & CSR49_FH_INT_RX_MASK)
1599 inta |= CSR_INT_BIT_FH_RX;
1600 if (inta_fh & CSR49_FH_INT_TX_MASK)
1601 inta |= CSR_INT_BIT_FH_TX;
1602
1603 /* Now service all interrupt bits discovered above. */
1604 if (inta & CSR_INT_BIT_HW_ERR) {
1605 IWL_ERROR("Microcode HW error detected. Restarting.\n");
1606
1607 /* Tell the device to stop sending interrupts */
1608 iwl_disable_interrupts(priv);
1609
1610 iwl_irq_handle_error(priv);
1611
1612 handled |= CSR_INT_BIT_HW_ERR;
1613
1614 spin_unlock_irqrestore(&priv->lock, flags);
1615
1616 return;
1617 }
1618
1619 #ifdef CONFIG_IWLWIFI_DEBUG
1620 if (priv->debug_level & (IWL_DL_ISR)) {
1621 /* NIC fires this, but we don't use it, redundant with WAKEUP */
1622 if (inta & CSR_INT_BIT_SCD)
1623 IWL_DEBUG_ISR("Scheduler finished to transmit "
1624 "the frame/frames.\n");
1625
1626 /* Alive notification via Rx interrupt will do the real work */
1627 if (inta & CSR_INT_BIT_ALIVE)
1628 IWL_DEBUG_ISR("Alive interrupt\n");
1629 }
1630 #endif
1631 /* Safely ignore these bits for debug checks below */
1632 inta &= ~(CSR_INT_BIT_SCD | CSR_INT_BIT_ALIVE);
1633
1634 /* HW RF KILL switch toggled */
1635 if (inta & CSR_INT_BIT_RF_KILL) {
1636 int hw_rf_kill = 0;
1637 if (!(iwl_read32(priv, CSR_GP_CNTRL) &
1638 CSR_GP_CNTRL_REG_FLAG_HW_RF_KILL_SW))
1639 hw_rf_kill = 1;
1640
1641 IWL_DEBUG(IWL_DL_RF_KILL, "RF_KILL bit toggled to %s.\n",
1642 hw_rf_kill ? "disable radio":"enable radio");
1643
1644 /* driver only loads ucode once setting the interface up.
1645 * the driver as well won't allow loading if RFKILL is set
1646 * therefore no need to restart the driver from this handler
1647 */
1648 if (!hw_rf_kill && !test_bit(STATUS_ALIVE, &priv->status))
1649 clear_bit(STATUS_RF_KILL_HW, &priv->status);
1650
1651 handled |= CSR_INT_BIT_RF_KILL;
1652 }
1653
1654 /* Chip got too hot and stopped itself */
1655 if (inta & CSR_INT_BIT_CT_KILL) {
1656 IWL_ERROR("Microcode CT kill error detected.\n");
1657 handled |= CSR_INT_BIT_CT_KILL;
1658 }
1659
1660 /* Error detected by uCode */
1661 if (inta & CSR_INT_BIT_SW_ERR) {
1662 IWL_ERROR("Microcode SW error detected. Restarting 0x%X.\n",
1663 inta);
1664 iwl_irq_handle_error(priv);
1665 handled |= CSR_INT_BIT_SW_ERR;
1666 }
1667
1668 /* uCode wakes up after power-down sleep */
1669 if (inta & CSR_INT_BIT_WAKEUP) {
1670 IWL_DEBUG_ISR("Wakeup interrupt\n");
1671 iwl_rx_queue_update_write_ptr(priv, &priv->rxq);
1672 iwl_txq_update_write_ptr(priv, &priv->txq[0]);
1673 iwl_txq_update_write_ptr(priv, &priv->txq[1]);
1674 iwl_txq_update_write_ptr(priv, &priv->txq[2]);
1675 iwl_txq_update_write_ptr(priv, &priv->txq[3]);
1676 iwl_txq_update_write_ptr(priv, &priv->txq[4]);
1677 iwl_txq_update_write_ptr(priv, &priv->txq[5]);
1678
1679 handled |= CSR_INT_BIT_WAKEUP;
1680 }
1681
1682 /* All uCode command responses, including Tx command responses,
1683 * Rx "responses" (frame-received notification), and other
1684 * notifications from uCode come through here*/
1685 if (inta & (CSR_INT_BIT_FH_RX | CSR_INT_BIT_SW_RX)) {
1686 iwl_rx_handle(priv);
1687 handled |= (CSR_INT_BIT_FH_RX | CSR_INT_BIT_SW_RX);
1688 }
1689
1690 if (inta & CSR_INT_BIT_FH_TX) {
1691 IWL_DEBUG_ISR("Tx interrupt\n");
1692 handled |= CSR_INT_BIT_FH_TX;
1693 /* FH finished to write, send event */
1694 priv->ucode_write_complete = 1;
1695 wake_up_interruptible(&priv->wait_command_queue);
1696 }
1697
1698 if (inta & ~handled)
1699 IWL_ERROR("Unhandled INTA bits 0x%08x\n", inta & ~handled);
1700
1701 if (inta & ~CSR_INI_SET_MASK) {
1702 IWL_WARNING("Disabled INTA bits 0x%08x were pending\n",
1703 inta & ~CSR_INI_SET_MASK);
1704 IWL_WARNING(" with FH_INT = 0x%08x\n", inta_fh);
1705 }
1706
1707 /* Re-enable all interrupts */
1708 /* only Re-enable if diabled by irq */
1709 if (test_bit(STATUS_INT_ENABLED, &priv->status))
1710 iwl_enable_interrupts(priv);
1711
1712 #ifdef CONFIG_IWLWIFI_DEBUG
1713 if (priv->debug_level & (IWL_DL_ISR)) {
1714 inta = iwl_read32(priv, CSR_INT);
1715 inta_mask = iwl_read32(priv, CSR_INT_MASK);
1716 inta_fh = iwl_read32(priv, CSR_FH_INT_STATUS);
1717 IWL_DEBUG_ISR("End inta 0x%08x, enabled 0x%08x, fh 0x%08x, "
1718 "flags 0x%08lx\n", inta, inta_mask, inta_fh, flags);
1719 }
1720 #endif
1721 spin_unlock_irqrestore(&priv->lock, flags);
1722 }
1723
1724 static irqreturn_t iwl_isr(int irq, void *data)
1725 {
1726 struct iwl_priv *priv = data;
1727 u32 inta, inta_mask;
1728 u32 inta_fh;
1729 if (!priv)
1730 return IRQ_NONE;
1731
1732 spin_lock(&priv->lock);
1733
1734 /* Disable (but don't clear!) interrupts here to avoid
1735 * back-to-back ISRs and sporadic interrupts from our NIC.
1736 * If we have something to service, the tasklet will re-enable ints.
1737 * If we *don't* have something, we'll re-enable before leaving here. */
1738 inta_mask = iwl_read32(priv, CSR_INT_MASK); /* just for debug */
1739 iwl_write32(priv, CSR_INT_MASK, 0x00000000);
1740
1741 /* Discover which interrupts are active/pending */
1742 inta = iwl_read32(priv, CSR_INT);
1743 inta_fh = iwl_read32(priv, CSR_FH_INT_STATUS);
1744
1745 /* Ignore interrupt if there's nothing in NIC to service.
1746 * This may be due to IRQ shared with another device,
1747 * or due to sporadic interrupts thrown from our NIC. */
1748 if (!inta && !inta_fh) {
1749 IWL_DEBUG_ISR("Ignore interrupt, inta == 0, inta_fh == 0\n");
1750 goto none;
1751 }
1752
1753 if ((inta == 0xFFFFFFFF) || ((inta & 0xFFFFFFF0) == 0xa5a5a5a0)) {
1754 /* Hardware disappeared. It might have already raised
1755 * an interrupt */
1756 IWL_WARNING("HARDWARE GONE?? INTA == 0x%080x\n", inta);
1757 goto unplugged;
1758 }
1759
1760 IWL_DEBUG_ISR("ISR inta 0x%08x, enabled 0x%08x, fh 0x%08x\n",
1761 inta, inta_mask, inta_fh);
1762
1763 inta &= ~CSR_INT_BIT_SCD;
1764
1765 /* iwl_irq_tasklet() will service interrupts and re-enable them */
1766 if (likely(inta || inta_fh))
1767 tasklet_schedule(&priv->irq_tasklet);
1768
1769 unplugged:
1770 spin_unlock(&priv->lock);
1771 return IRQ_HANDLED;
1772
1773 none:
1774 /* re-enable interrupts here since we don't have anything to service. */
1775 /* only Re-enable if diabled by irq */
1776 if (test_bit(STATUS_INT_ENABLED, &priv->status))
1777 iwl_enable_interrupts(priv);
1778 spin_unlock(&priv->lock);
1779 return IRQ_NONE;
1780 }
1781
1782 /******************************************************************************
1783 *
1784 * uCode download functions
1785 *
1786 ******************************************************************************/
1787
1788 static void iwl_dealloc_ucode_pci(struct iwl_priv *priv)
1789 {
1790 iwl_free_fw_desc(priv->pci_dev, &priv->ucode_code);
1791 iwl_free_fw_desc(priv->pci_dev, &priv->ucode_data);
1792 iwl_free_fw_desc(priv->pci_dev, &priv->ucode_data_backup);
1793 iwl_free_fw_desc(priv->pci_dev, &priv->ucode_init);
1794 iwl_free_fw_desc(priv->pci_dev, &priv->ucode_init_data);
1795 iwl_free_fw_desc(priv->pci_dev, &priv->ucode_boot);
1796 }
1797
1798 static void iwl_nic_start(struct iwl_priv *priv)
1799 {
1800 /* Remove all resets to allow NIC to operate */
1801 iwl_write32(priv, CSR_RESET, 0);
1802 }
1803
1804
1805 /**
1806 * iwl_read_ucode - Read uCode images from disk file.
1807 *
1808 * Copy into buffers for card to fetch via bus-mastering
1809 */
1810 static int iwl_read_ucode(struct iwl_priv *priv)
1811 {
1812 struct iwl_ucode *ucode;
1813 int ret;
1814 const struct firmware *ucode_raw;
1815 const char *name = priv->cfg->fw_name;
1816 u8 *src;
1817 size_t len;
1818 u32 ver, inst_size, data_size, init_size, init_data_size, boot_size;
1819
1820 /* Ask kernel firmware_class module to get the boot firmware off disk.
1821 * request_firmware() is synchronous, file is in memory on return. */
1822 ret = request_firmware(&ucode_raw, name, &priv->pci_dev->dev);
1823 if (ret < 0) {
1824 IWL_ERROR("%s firmware file req failed: Reason %d\n",
1825 name, ret);
1826 goto error;
1827 }
1828
1829 IWL_DEBUG_INFO("Got firmware '%s' file (%zd bytes) from disk\n",
1830 name, ucode_raw->size);
1831
1832 /* Make sure that we got at least our header! */
1833 if (ucode_raw->size < sizeof(*ucode)) {
1834 IWL_ERROR("File size way too small!\n");
1835 ret = -EINVAL;
1836 goto err_release;
1837 }
1838
1839 /* Data from ucode file: header followed by uCode images */
1840 ucode = (void *)ucode_raw->data;
1841
1842 ver = le32_to_cpu(ucode->ver);
1843 inst_size = le32_to_cpu(ucode->inst_size);
1844 data_size = le32_to_cpu(ucode->data_size);
1845 init_size = le32_to_cpu(ucode->init_size);
1846 init_data_size = le32_to_cpu(ucode->init_data_size);
1847 boot_size = le32_to_cpu(ucode->boot_size);
1848
1849 IWL_DEBUG_INFO("f/w package hdr ucode version = 0x%x\n", ver);
1850 IWL_DEBUG_INFO("f/w package hdr runtime inst size = %u\n",
1851 inst_size);
1852 IWL_DEBUG_INFO("f/w package hdr runtime data size = %u\n",
1853 data_size);
1854 IWL_DEBUG_INFO("f/w package hdr init inst size = %u\n",
1855 init_size);
1856 IWL_DEBUG_INFO("f/w package hdr init data size = %u\n",
1857 init_data_size);
1858 IWL_DEBUG_INFO("f/w package hdr boot inst size = %u\n",
1859 boot_size);
1860
1861 /* Verify size of file vs. image size info in file's header */
1862 if (ucode_raw->size < sizeof(*ucode) +
1863 inst_size + data_size + init_size +
1864 init_data_size + boot_size) {
1865
1866 IWL_DEBUG_INFO("uCode file size %d too small\n",
1867 (int)ucode_raw->size);
1868 ret = -EINVAL;
1869 goto err_release;
1870 }
1871
1872 /* Verify that uCode images will fit in card's SRAM */
1873 if (inst_size > priv->hw_params.max_inst_size) {
1874 IWL_DEBUG_INFO("uCode instr len %d too large to fit in\n",
1875 inst_size);
1876 ret = -EINVAL;
1877 goto err_release;
1878 }
1879
1880 if (data_size > priv->hw_params.max_data_size) {
1881 IWL_DEBUG_INFO("uCode data len %d too large to fit in\n",
1882 data_size);
1883 ret = -EINVAL;
1884 goto err_release;
1885 }
1886 if (init_size > priv->hw_params.max_inst_size) {
1887 IWL_DEBUG_INFO
1888 ("uCode init instr len %d too large to fit in\n",
1889 init_size);
1890 ret = -EINVAL;
1891 goto err_release;
1892 }
1893 if (init_data_size > priv->hw_params.max_data_size) {
1894 IWL_DEBUG_INFO
1895 ("uCode init data len %d too large to fit in\n",
1896 init_data_size);
1897 ret = -EINVAL;
1898 goto err_release;
1899 }
1900 if (boot_size > priv->hw_params.max_bsm_size) {
1901 IWL_DEBUG_INFO
1902 ("uCode boot instr len %d too large to fit in\n",
1903 boot_size);
1904 ret = -EINVAL;
1905 goto err_release;
1906 }
1907
1908 /* Allocate ucode buffers for card's bus-master loading ... */
1909
1910 /* Runtime instructions and 2 copies of data:
1911 * 1) unmodified from disk
1912 * 2) backup cache for save/restore during power-downs */
1913 priv->ucode_code.len = inst_size;
1914 iwl_alloc_fw_desc(priv->pci_dev, &priv->ucode_code);
1915
1916 priv->ucode_data.len = data_size;
1917 iwl_alloc_fw_desc(priv->pci_dev, &priv->ucode_data);
1918
1919 priv->ucode_data_backup.len = data_size;
1920 iwl_alloc_fw_desc(priv->pci_dev, &priv->ucode_data_backup);
1921
1922 /* Initialization instructions and data */
1923 if (init_size && init_data_size) {
1924 priv->ucode_init.len = init_size;
1925 iwl_alloc_fw_desc(priv->pci_dev, &priv->ucode_init);
1926
1927 priv->ucode_init_data.len = init_data_size;
1928 iwl_alloc_fw_desc(priv->pci_dev, &priv->ucode_init_data);
1929
1930 if (!priv->ucode_init.v_addr || !priv->ucode_init_data.v_addr)
1931 goto err_pci_alloc;
1932 }
1933
1934 /* Bootstrap (instructions only, no data) */
1935 if (boot_size) {
1936 priv->ucode_boot.len = boot_size;
1937 iwl_alloc_fw_desc(priv->pci_dev, &priv->ucode_boot);
1938
1939 if (!priv->ucode_boot.v_addr)
1940 goto err_pci_alloc;
1941 }
1942
1943 /* Copy images into buffers for card's bus-master reads ... */
1944
1945 /* Runtime instructions (first block of data in file) */
1946 src = &ucode->data[0];
1947 len = priv->ucode_code.len;
1948 IWL_DEBUG_INFO("Copying (but not loading) uCode instr len %Zd\n", len);
1949 memcpy(priv->ucode_code.v_addr, src, len);
1950 IWL_DEBUG_INFO("uCode instr buf vaddr = 0x%p, paddr = 0x%08x\n",
1951 priv->ucode_code.v_addr, (u32)priv->ucode_code.p_addr);
1952
1953 /* Runtime data (2nd block)
1954 * NOTE: Copy into backup buffer will be done in iwl_up() */
1955 src = &ucode->data[inst_size];
1956 len = priv->ucode_data.len;
1957 IWL_DEBUG_INFO("Copying (but not loading) uCode data len %Zd\n", len);
1958 memcpy(priv->ucode_data.v_addr, src, len);
1959 memcpy(priv->ucode_data_backup.v_addr, src, len);
1960
1961 /* Initialization instructions (3rd block) */
1962 if (init_size) {
1963 src = &ucode->data[inst_size + data_size];
1964 len = priv->ucode_init.len;
1965 IWL_DEBUG_INFO("Copying (but not loading) init instr len %Zd\n",
1966 len);
1967 memcpy(priv->ucode_init.v_addr, src, len);
1968 }
1969
1970 /* Initialization data (4th block) */
1971 if (init_data_size) {
1972 src = &ucode->data[inst_size + data_size + init_size];
1973 len = priv->ucode_init_data.len;
1974 IWL_DEBUG_INFO("Copying (but not loading) init data len %Zd\n",
1975 len);
1976 memcpy(priv->ucode_init_data.v_addr, src, len);
1977 }
1978
1979 /* Bootstrap instructions (5th block) */
1980 src = &ucode->data[inst_size + data_size + init_size + init_data_size];
1981 len = priv->ucode_boot.len;
1982 IWL_DEBUG_INFO("Copying (but not loading) boot instr len %Zd\n", len);
1983 memcpy(priv->ucode_boot.v_addr, src, len);
1984
1985 /* We have our copies now, allow OS release its copies */
1986 release_firmware(ucode_raw);
1987 return 0;
1988
1989 err_pci_alloc:
1990 IWL_ERROR("failed to allocate pci memory\n");
1991 ret = -ENOMEM;
1992 iwl_dealloc_ucode_pci(priv);
1993
1994 err_release:
1995 release_firmware(ucode_raw);
1996
1997 error:
1998 return ret;
1999 }
2000
2001 /**
2002 * iwl_alive_start - called after REPLY_ALIVE notification received
2003 * from protocol/runtime uCode (initialization uCode's
2004 * Alive gets handled by iwl_init_alive_start()).
2005 */
2006 static void iwl_alive_start(struct iwl_priv *priv)
2007 {
2008 int ret = 0;
2009
2010 IWL_DEBUG_INFO("Runtime Alive received.\n");
2011
2012 if (priv->card_alive.is_valid != UCODE_VALID_OK) {
2013 /* We had an error bringing up the hardware, so take it
2014 * all the way back down so we can try again */
2015 IWL_DEBUG_INFO("Alive failed.\n");
2016 goto restart;
2017 }
2018
2019 /* Initialize uCode has loaded Runtime uCode ... verify inst image.
2020 * This is a paranoid check, because we would not have gotten the
2021 * "runtime" alive if code weren't properly loaded. */
2022 if (iwl_verify_ucode(priv)) {
2023 /* Runtime instruction load was bad;
2024 * take it all the way back down so we can try again */
2025 IWL_DEBUG_INFO("Bad runtime uCode load.\n");
2026 goto restart;
2027 }
2028
2029 iwl_clear_stations_table(priv);
2030 ret = priv->cfg->ops->lib->alive_notify(priv);
2031 if (ret) {
2032 IWL_WARNING("Could not complete ALIVE transition [ntf]: %d\n",
2033 ret);
2034 goto restart;
2035 }
2036
2037 /* After the ALIVE response, we can send host commands to the uCode */
2038 set_bit(STATUS_ALIVE, &priv->status);
2039
2040 if (iwl_is_rfkill(priv))
2041 return;
2042
2043 ieee80211_wake_queues(priv->hw);
2044
2045 priv->active_rate = priv->rates_mask;
2046 priv->active_rate_basic = priv->rates_mask & IWL_BASIC_RATES_MASK;
2047
2048 if (iwl_is_associated(priv)) {
2049 struct iwl_rxon_cmd *active_rxon =
2050 (struct iwl_rxon_cmd *)&priv->active_rxon;
2051
2052 memcpy(&priv->staging_rxon, &priv->active_rxon,
2053 sizeof(priv->staging_rxon));
2054 active_rxon->filter_flags &= ~RXON_FILTER_ASSOC_MSK;
2055 } else {
2056 /* Initialize our rx_config data */
2057 iwl_connection_init_rx_config(priv, priv->iw_mode);
2058 memcpy(priv->staging_rxon.node_addr, priv->mac_addr, ETH_ALEN);
2059 }
2060
2061 /* Configure Bluetooth device coexistence support */
2062 iwl_send_bt_config(priv);
2063
2064 iwl_reset_run_time_calib(priv);
2065
2066 /* Configure the adapter for unassociated operation */
2067 iwl_commit_rxon(priv);
2068
2069 /* At this point, the NIC is initialized and operational */
2070 iwl_rf_kill_ct_config(priv);
2071
2072 iwl_leds_register(priv);
2073
2074 IWL_DEBUG_INFO("ALIVE processing complete.\n");
2075 set_bit(STATUS_READY, &priv->status);
2076 wake_up_interruptible(&priv->wait_command_queue);
2077
2078 if (priv->error_recovering)
2079 iwl_error_recovery(priv);
2080
2081 iwl_power_update_mode(priv, 1);
2082
2083 if (test_and_clear_bit(STATUS_MODE_PENDING, &priv->status))
2084 iwl_set_mode(priv, priv->iw_mode);
2085
2086 return;
2087
2088 restart:
2089 queue_work(priv->workqueue, &priv->restart);
2090 }
2091
2092 static void iwl_cancel_deferred_work(struct iwl_priv *priv);
2093
2094 static void __iwl_down(struct iwl_priv *priv)
2095 {
2096 unsigned long flags;
2097 int exit_pending = test_bit(STATUS_EXIT_PENDING, &priv->status);
2098
2099 IWL_DEBUG_INFO(DRV_NAME " is going down\n");
2100
2101 if (!exit_pending)
2102 set_bit(STATUS_EXIT_PENDING, &priv->status);
2103
2104 iwl_leds_unregister(priv);
2105
2106 iwl_clear_stations_table(priv);
2107
2108 /* Unblock any waiting calls */
2109 wake_up_interruptible_all(&priv->wait_command_queue);
2110
2111 /* Wipe out the EXIT_PENDING status bit if we are not actually
2112 * exiting the module */
2113 if (!exit_pending)
2114 clear_bit(STATUS_EXIT_PENDING, &priv->status);
2115
2116 /* stop and reset the on-board processor */
2117 iwl_write32(priv, CSR_RESET, CSR_RESET_REG_FLAG_NEVO_RESET);
2118
2119 /* tell the device to stop sending interrupts */
2120 spin_lock_irqsave(&priv->lock, flags);
2121 iwl_disable_interrupts(priv);
2122 spin_unlock_irqrestore(&priv->lock, flags);
2123 iwl_synchronize_irq(priv);
2124
2125 if (priv->mac80211_registered)
2126 ieee80211_stop_queues(priv->hw);
2127
2128 /* If we have not previously called iwl_init() then
2129 * clear all bits but the RF Kill and SUSPEND bits and return */
2130 if (!iwl_is_init(priv)) {
2131 priv->status = test_bit(STATUS_RF_KILL_HW, &priv->status) <<
2132 STATUS_RF_KILL_HW |
2133 test_bit(STATUS_RF_KILL_SW, &priv->status) <<
2134 STATUS_RF_KILL_SW |
2135 test_bit(STATUS_GEO_CONFIGURED, &priv->status) <<
2136 STATUS_GEO_CONFIGURED |
2137 test_bit(STATUS_IN_SUSPEND, &priv->status) <<
2138 STATUS_IN_SUSPEND |
2139 test_bit(STATUS_EXIT_PENDING, &priv->status) <<
2140 STATUS_EXIT_PENDING;
2141 goto exit;
2142 }
2143
2144 /* ...otherwise clear out all the status bits but the RF Kill and
2145 * SUSPEND bits and continue taking the NIC down. */
2146 priv->status &= test_bit(STATUS_RF_KILL_HW, &priv->status) <<
2147 STATUS_RF_KILL_HW |
2148 test_bit(STATUS_RF_KILL_SW, &priv->status) <<
2149 STATUS_RF_KILL_SW |
2150 test_bit(STATUS_GEO_CONFIGURED, &priv->status) <<
2151 STATUS_GEO_CONFIGURED |
2152 test_bit(STATUS_IN_SUSPEND, &priv->status) <<
2153 STATUS_IN_SUSPEND |
2154 test_bit(STATUS_FW_ERROR, &priv->status) <<
2155 STATUS_FW_ERROR |
2156 test_bit(STATUS_EXIT_PENDING, &priv->status) <<
2157 STATUS_EXIT_PENDING;
2158
2159 spin_lock_irqsave(&priv->lock, flags);
2160 iwl_clear_bit(priv, CSR_GP_CNTRL,
2161 CSR_GP_CNTRL_REG_FLAG_MAC_ACCESS_REQ);
2162 spin_unlock_irqrestore(&priv->lock, flags);
2163
2164 iwl_txq_ctx_stop(priv);
2165 iwl_rxq_stop(priv);
2166
2167 spin_lock_irqsave(&priv->lock, flags);
2168 if (!iwl_grab_nic_access(priv)) {
2169 iwl_write_prph(priv, APMG_CLK_DIS_REG,
2170 APMG_CLK_VAL_DMA_CLK_RQT);
2171 iwl_release_nic_access(priv);
2172 }
2173 spin_unlock_irqrestore(&priv->lock, flags);
2174
2175 udelay(5);
2176
2177 /* FIXME: apm_ops.suspend(priv) */
2178 if (exit_pending || test_bit(STATUS_IN_SUSPEND, &priv->status))
2179 priv->cfg->ops->lib->apm_ops.stop(priv);
2180 else
2181 priv->cfg->ops->lib->apm_ops.reset(priv);
2182 priv->cfg->ops->lib->free_shared_mem(priv);
2183
2184 exit:
2185 memset(&priv->card_alive, 0, sizeof(struct iwl_alive_resp));
2186
2187 if (priv->ibss_beacon)
2188 dev_kfree_skb(priv->ibss_beacon);
2189 priv->ibss_beacon = NULL;
2190
2191 /* clear out any free frames */
2192 iwl_clear_free_frames(priv);
2193 }
2194
2195 static void iwl_down(struct iwl_priv *priv)
2196 {
2197 mutex_lock(&priv->mutex);
2198 __iwl_down(priv);
2199 mutex_unlock(&priv->mutex);
2200
2201 iwl_cancel_deferred_work(priv);
2202 }
2203
2204 #define MAX_HW_RESTARTS 5
2205
2206 static int __iwl_up(struct iwl_priv *priv)
2207 {
2208 int i;
2209 int ret;
2210
2211 if (test_bit(STATUS_EXIT_PENDING, &priv->status)) {
2212 IWL_WARNING("Exit pending; will not bring the NIC up\n");
2213 return -EIO;
2214 }
2215
2216 if (!priv->ucode_data_backup.v_addr || !priv->ucode_data.v_addr) {
2217 IWL_ERROR("ucode not available for device bringup\n");
2218 return -EIO;
2219 }
2220
2221 /* If platform's RF_KILL switch is NOT set to KILL */
2222 if (iwl_read32(priv, CSR_GP_CNTRL) & CSR_GP_CNTRL_REG_FLAG_HW_RF_KILL_SW)
2223 clear_bit(STATUS_RF_KILL_HW, &priv->status);
2224 else
2225 set_bit(STATUS_RF_KILL_HW, &priv->status);
2226
2227 if (iwl_is_rfkill(priv)) {
2228 iwl_enable_interrupts(priv);
2229 IWL_WARNING("Radio disabled by %s RF Kill switch\n",
2230 test_bit(STATUS_RF_KILL_HW, &priv->status) ? "HW" : "SW");
2231 return 0;
2232 }
2233
2234 iwl_write32(priv, CSR_INT, 0xFFFFFFFF);
2235
2236 ret = priv->cfg->ops->lib->alloc_shared_mem(priv);
2237 if (ret) {
2238 IWL_ERROR("Unable to allocate shared memory\n");
2239 return ret;
2240 }
2241
2242 ret = iwl_hw_nic_init(priv);
2243 if (ret) {
2244 IWL_ERROR("Unable to init nic\n");
2245 return ret;
2246 }
2247
2248 /* make sure rfkill handshake bits are cleared */
2249 iwl_write32(priv, CSR_UCODE_DRV_GP1_CLR, CSR_UCODE_SW_BIT_RFKILL);
2250 iwl_write32(priv, CSR_UCODE_DRV_GP1_CLR,
2251 CSR_UCODE_DRV_GP1_BIT_CMD_BLOCKED);
2252
2253 /* clear (again), then enable host interrupts */
2254 iwl_write32(priv, CSR_INT, 0xFFFFFFFF);
2255 iwl_enable_interrupts(priv);
2256
2257 /* really make sure rfkill handshake bits are cleared */
2258 iwl_write32(priv, CSR_UCODE_DRV_GP1_CLR, CSR_UCODE_SW_BIT_RFKILL);
2259 iwl_write32(priv, CSR_UCODE_DRV_GP1_CLR, CSR_UCODE_SW_BIT_RFKILL);
2260
2261 /* Copy original ucode data image from disk into backup cache.
2262 * This will be used to initialize the on-board processor's
2263 * data SRAM for a clean start when the runtime program first loads. */
2264 memcpy(priv->ucode_data_backup.v_addr, priv->ucode_data.v_addr,
2265 priv->ucode_data.len);
2266
2267 for (i = 0; i < MAX_HW_RESTARTS; i++) {
2268
2269 iwl_clear_stations_table(priv);
2270
2271 /* load bootstrap state machine,
2272 * load bootstrap program into processor's memory,
2273 * prepare to load the "initialize" uCode */
2274 ret = priv->cfg->ops->lib->load_ucode(priv);
2275
2276 if (ret) {
2277 IWL_ERROR("Unable to set up bootstrap uCode: %d\n", ret);
2278 continue;
2279 }
2280
2281 /* Clear out the uCode error bit if it is set */
2282 clear_bit(STATUS_FW_ERROR, &priv->status);
2283
2284 /* start card; "initialize" will load runtime ucode */
2285 iwl_nic_start(priv);
2286
2287 IWL_DEBUG_INFO(DRV_NAME " is coming up\n");
2288
2289 return 0;
2290 }
2291
2292 set_bit(STATUS_EXIT_PENDING, &priv->status);
2293 __iwl_down(priv);
2294 clear_bit(STATUS_EXIT_PENDING, &priv->status);
2295
2296 /* tried to restart and config the device for as long as our
2297 * patience could withstand */
2298 IWL_ERROR("Unable to initialize device after %d attempts.\n", i);
2299 return -EIO;
2300 }
2301
2302
2303 /*****************************************************************************
2304 *
2305 * Workqueue callbacks
2306 *
2307 *****************************************************************************/
2308
2309 static void iwl_bg_init_alive_start(struct work_struct *data)
2310 {
2311 struct iwl_priv *priv =
2312 container_of(data, struct iwl_priv, init_alive_start.work);
2313
2314 if (test_bit(STATUS_EXIT_PENDING, &priv->status))
2315 return;
2316
2317 mutex_lock(&priv->mutex);
2318 priv->cfg->ops->lib->init_alive_start(priv);
2319 mutex_unlock(&priv->mutex);
2320 }
2321
2322 static void iwl_bg_alive_start(struct work_struct *data)
2323 {
2324 struct iwl_priv *priv =
2325 container_of(data, struct iwl_priv, alive_start.work);
2326
2327 if (test_bit(STATUS_EXIT_PENDING, &priv->status))
2328 return;
2329
2330 mutex_lock(&priv->mutex);
2331 iwl_alive_start(priv);
2332 mutex_unlock(&priv->mutex);
2333 ieee80211_notify_mac(priv->hw, IEEE80211_NOTIFY_RE_ASSOC);
2334 }
2335
2336 static void iwl_bg_rf_kill(struct work_struct *work)
2337 {
2338 struct iwl_priv *priv = container_of(work, struct iwl_priv, rf_kill);
2339
2340 wake_up_interruptible(&priv->wait_command_queue);
2341
2342 if (test_bit(STATUS_EXIT_PENDING, &priv->status))
2343 return;
2344
2345 mutex_lock(&priv->mutex);
2346
2347 if (!iwl_is_rfkill(priv)) {
2348 IWL_DEBUG(IWL_DL_RF_KILL,
2349 "HW and/or SW RF Kill no longer active, restarting "
2350 "device\n");
2351 if (!test_bit(STATUS_EXIT_PENDING, &priv->status))
2352 queue_work(priv->workqueue, &priv->restart);
2353 } else {
2354 /* make sure mac80211 stop sending Tx frame */
2355 if (priv->mac80211_registered)
2356 ieee80211_stop_queues(priv->hw);
2357
2358 if (!test_bit(STATUS_RF_KILL_HW, &priv->status))
2359 IWL_DEBUG_RF_KILL("Can not turn radio back on - "
2360 "disabled by SW switch\n");
2361 else
2362 IWL_WARNING("Radio Frequency Kill Switch is On:\n"
2363 "Kill switch must be turned off for "
2364 "wireless networking to work.\n");
2365 }
2366 mutex_unlock(&priv->mutex);
2367 iwl_rfkill_set_hw_state(priv);
2368 }
2369
2370 static void iwl_bg_set_monitor(struct work_struct *work)
2371 {
2372 struct iwl_priv *priv = container_of(work,
2373 struct iwl_priv, set_monitor);
2374 int ret;
2375
2376 IWL_DEBUG(IWL_DL_STATE, "setting monitor mode\n");
2377
2378 mutex_lock(&priv->mutex);
2379
2380 ret = iwl_set_mode(priv, NL80211_IFTYPE_MONITOR);
2381 if (ret) {
2382 if (ret == -EAGAIN)
2383 IWL_DEBUG(IWL_DL_STATE, "leave - not ready\n");
2384 else
2385 IWL_ERROR("iwl_set_mode() failed ret = %d\n", ret);
2386 }
2387
2388 mutex_unlock(&priv->mutex);
2389 ieee80211_notify_mac(priv->hw, IEEE80211_NOTIFY_RE_ASSOC);
2390 }
2391
2392 static void iwl_bg_run_time_calib_work(struct work_struct *work)
2393 {
2394 struct iwl_priv *priv = container_of(work, struct iwl_priv,
2395 run_time_calib_work);
2396
2397 mutex_lock(&priv->mutex);
2398
2399 if (test_bit(STATUS_EXIT_PENDING, &priv->status) ||
2400 test_bit(STATUS_SCANNING, &priv->status)) {
2401 mutex_unlock(&priv->mutex);
2402 return;
2403 }
2404
2405 if (priv->start_calib) {
2406 iwl_chain_noise_calibration(priv, &priv->statistics);
2407
2408 iwl_sensitivity_calibration(priv, &priv->statistics);
2409 }
2410
2411 mutex_unlock(&priv->mutex);
2412 return;
2413 }
2414
2415 static void iwl_bg_up(struct work_struct *data)
2416 {
2417 struct iwl_priv *priv = container_of(data, struct iwl_priv, up);
2418
2419 if (test_bit(STATUS_EXIT_PENDING, &priv->status))
2420 return;
2421
2422 mutex_lock(&priv->mutex);
2423 __iwl_up(priv);
2424 mutex_unlock(&priv->mutex);
2425 iwl_rfkill_set_hw_state(priv);
2426 }
2427
2428 static void iwl_bg_restart(struct work_struct *data)
2429 {
2430 struct iwl_priv *priv = container_of(data, struct iwl_priv, restart);
2431
2432 if (test_bit(STATUS_EXIT_PENDING, &priv->status))
2433 return;
2434
2435 iwl_down(priv);
2436 queue_work(priv->workqueue, &priv->up);
2437 }
2438
2439 static void iwl_bg_rx_replenish(struct work_struct *data)
2440 {
2441 struct iwl_priv *priv =
2442 container_of(data, struct iwl_priv, rx_replenish);
2443
2444 if (test_bit(STATUS_EXIT_PENDING, &priv->status))
2445 return;
2446
2447 mutex_lock(&priv->mutex);
2448 iwl_rx_replenish(priv);
2449 mutex_unlock(&priv->mutex);
2450 }
2451
2452 #define IWL_DELAY_NEXT_SCAN (HZ*2)
2453
2454 static void iwl_post_associate(struct iwl_priv *priv)
2455 {
2456 struct ieee80211_conf *conf = NULL;
2457 int ret = 0;
2458 unsigned long flags;
2459
2460 if (priv->iw_mode == NL80211_IFTYPE_AP) {
2461 IWL_ERROR("%s Should not be called in AP mode\n", __func__);
2462 return;
2463 }
2464
2465 IWL_DEBUG_ASSOC("Associated as %d to: %pM\n",
2466 priv->assoc_id, priv->active_rxon.bssid_addr);
2467
2468
2469 if (test_bit(STATUS_EXIT_PENDING, &priv->status))
2470 return;
2471
2472
2473 if (!priv->vif || !priv->is_open)
2474 return;
2475
2476 iwl_power_cancel_timeout(priv);
2477 iwl_scan_cancel_timeout(priv, 200);
2478
2479 conf = ieee80211_get_hw_conf(priv->hw);
2480
2481 priv->staging_rxon.filter_flags &= ~RXON_FILTER_ASSOC_MSK;
2482 iwl_commit_rxon(priv);
2483
2484 iwl_setup_rxon_timing(priv);
2485 ret = iwl_send_cmd_pdu(priv, REPLY_RXON_TIMING,
2486 sizeof(priv->rxon_timing), &priv->rxon_timing);
2487 if (ret)
2488 IWL_WARNING("REPLY_RXON_TIMING failed - "
2489 "Attempting to continue.\n");
2490
2491 priv->staging_rxon.filter_flags |= RXON_FILTER_ASSOC_MSK;
2492
2493 iwl_set_rxon_ht(priv, &priv->current_ht_config);
2494
2495 iwl_set_rxon_chain(priv);
2496 priv->staging_rxon.assoc_id = cpu_to_le16(priv->assoc_id);
2497
2498 IWL_DEBUG_ASSOC("assoc id %d beacon interval %d\n",
2499 priv->assoc_id, priv->beacon_int);
2500
2501 if (priv->assoc_capability & WLAN_CAPABILITY_SHORT_PREAMBLE)
2502 priv->staging_rxon.flags |= RXON_FLG_SHORT_PREAMBLE_MSK;
2503 else
2504 priv->staging_rxon.flags &= ~RXON_FLG_SHORT_PREAMBLE_MSK;
2505
2506 if (priv->staging_rxon.flags & RXON_FLG_BAND_24G_MSK) {
2507 if (priv->assoc_capability & WLAN_CAPABILITY_SHORT_SLOT_TIME)
2508 priv->staging_rxon.flags |= RXON_FLG_SHORT_SLOT_MSK;
2509 else
2510 priv->staging_rxon.flags &= ~RXON_FLG_SHORT_SLOT_MSK;
2511
2512 if (priv->iw_mode == NL80211_IFTYPE_ADHOC)
2513 priv->staging_rxon.flags &= ~RXON_FLG_SHORT_SLOT_MSK;
2514
2515 }
2516
2517 iwl_commit_rxon(priv);
2518
2519 switch (priv->iw_mode) {
2520 case NL80211_IFTYPE_STATION:
2521 break;
2522
2523 case NL80211_IFTYPE_ADHOC:
2524
2525 /* assume default assoc id */
2526 priv->assoc_id = 1;
2527
2528 iwl_rxon_add_station(priv, priv->bssid, 0);
2529 iwl_send_beacon_cmd(priv);
2530
2531 break;
2532
2533 default:
2534 IWL_ERROR("%s Should not be called in %d mode\n",
2535 __func__, priv->iw_mode);
2536 break;
2537 }
2538
2539 if (priv->iw_mode == NL80211_IFTYPE_ADHOC)
2540 priv->assoc_station_added = 1;
2541
2542 spin_lock_irqsave(&priv->lock, flags);
2543 iwl_activate_qos(priv, 0);
2544 spin_unlock_irqrestore(&priv->lock, flags);
2545
2546 /* the chain noise calibration will enabled PM upon completion
2547 * If chain noise has already been run, then we need to enable
2548 * power management here */
2549 if (priv->chain_noise_data.state == IWL_CHAIN_NOISE_DONE)
2550 iwl_power_enable_management(priv);
2551
2552 /* Enable Rx differential gain and sensitivity calibrations */
2553 iwl_chain_noise_reset(priv);
2554 priv->start_calib = 1;
2555
2556 }
2557
2558 /*****************************************************************************
2559 *
2560 * mac80211 entry point functions
2561 *
2562 *****************************************************************************/
2563
2564 #define UCODE_READY_TIMEOUT (4 * HZ)
2565
2566 static int iwl_mac_start(struct ieee80211_hw *hw)
2567 {
2568 struct iwl_priv *priv = hw->priv;
2569 int ret;
2570 u16 pci_cmd;
2571
2572 IWL_DEBUG_MAC80211("enter\n");
2573
2574 if (pci_enable_device(priv->pci_dev)) {
2575 IWL_ERROR("Fail to pci_enable_device\n");
2576 return -ENODEV;
2577 }
2578 pci_restore_state(priv->pci_dev);
2579 pci_enable_msi(priv->pci_dev);
2580
2581 /* enable interrupts if needed: hw bug w/a */
2582 pci_read_config_word(priv->pci_dev, PCI_COMMAND, &pci_cmd);
2583 if (pci_cmd & PCI_COMMAND_INTX_DISABLE) {
2584 pci_cmd &= ~PCI_COMMAND_INTX_DISABLE;
2585 pci_write_config_word(priv->pci_dev, PCI_COMMAND, pci_cmd);
2586 }
2587
2588 ret = request_irq(priv->pci_dev->irq, iwl_isr, IRQF_SHARED,
2589 DRV_NAME, priv);
2590 if (ret) {
2591 IWL_ERROR("Error allocating IRQ %d\n", priv->pci_dev->irq);
2592 goto out_disable_msi;
2593 }
2594
2595 /* we should be verifying the device is ready to be opened */
2596 mutex_lock(&priv->mutex);
2597
2598 memset(&priv->staging_rxon, 0, sizeof(struct iwl_rxon_cmd));
2599 /* fetch ucode file from disk, alloc and copy to bus-master buffers ...
2600 * ucode filename and max sizes are card-specific. */
2601
2602 if (!priv->ucode_code.len) {
2603 ret = iwl_read_ucode(priv);
2604 if (ret) {
2605 IWL_ERROR("Could not read microcode: %d\n", ret);
2606 mutex_unlock(&priv->mutex);
2607 goto out_release_irq;
2608 }
2609 }
2610
2611 ret = __iwl_up(priv);
2612
2613 mutex_unlock(&priv->mutex);
2614
2615 iwl_rfkill_set_hw_state(priv);
2616
2617 if (ret)
2618 goto out_release_irq;
2619
2620 if (iwl_is_rfkill(priv))
2621 goto out;
2622
2623 IWL_DEBUG_INFO("Start UP work done.\n");
2624
2625 if (test_bit(STATUS_IN_SUSPEND, &priv->status))
2626 return 0;
2627
2628 /* Wait for START_ALIVE from Run Time ucode. Otherwise callbacks from
2629 * mac80211 will not be run successfully. */
2630 ret = wait_event_interruptible_timeout(priv->wait_command_queue,
2631 test_bit(STATUS_READY, &priv->status),
2632 UCODE_READY_TIMEOUT);
2633 if (!ret) {
2634 if (!test_bit(STATUS_READY, &priv->status)) {
2635 IWL_ERROR("START_ALIVE timeout after %dms.\n",
2636 jiffies_to_msecs(UCODE_READY_TIMEOUT));
2637 ret = -ETIMEDOUT;
2638 goto out_release_irq;
2639 }
2640 }
2641
2642 out:
2643 priv->is_open = 1;
2644 IWL_DEBUG_MAC80211("leave\n");
2645 return 0;
2646
2647 out_release_irq:
2648 free_irq(priv->pci_dev->irq, priv);
2649 out_disable_msi:
2650 pci_disable_msi(priv->pci_dev);
2651 pci_disable_device(priv->pci_dev);
2652 priv->is_open = 0;
2653 IWL_DEBUG_MAC80211("leave - failed\n");
2654 return ret;
2655 }
2656
2657 static void iwl_mac_stop(struct ieee80211_hw *hw)
2658 {
2659 struct iwl_priv *priv = hw->priv;
2660
2661 IWL_DEBUG_MAC80211("enter\n");
2662
2663 if (!priv->is_open) {
2664 IWL_DEBUG_MAC80211("leave - skip\n");
2665 return;
2666 }
2667
2668 priv->is_open = 0;
2669
2670 if (iwl_is_ready_rf(priv)) {
2671 /* stop mac, cancel any scan request and clear
2672 * RXON_FILTER_ASSOC_MSK BIT
2673 */
2674 mutex_lock(&priv->mutex);
2675 iwl_scan_cancel_timeout(priv, 100);
2676 mutex_unlock(&priv->mutex);
2677 }
2678
2679 iwl_down(priv);
2680
2681 flush_workqueue(priv->workqueue);
2682 free_irq(priv->pci_dev->irq, priv);
2683 pci_disable_msi(priv->pci_dev);
2684 pci_save_state(priv->pci_dev);
2685 pci_disable_device(priv->pci_dev);
2686
2687 IWL_DEBUG_MAC80211("leave\n");
2688 }
2689
2690 static int iwl_mac_tx(struct ieee80211_hw *hw, struct sk_buff *skb)
2691 {
2692 struct iwl_priv *priv = hw->priv;
2693
2694 IWL_DEBUG_MACDUMP("enter\n");
2695
2696 IWL_DEBUG_TX("dev->xmit(%d bytes) at rate 0x%02x\n", skb->len,
2697 ieee80211_get_tx_rate(hw, IEEE80211_SKB_CB(skb))->bitrate);
2698
2699 if (iwl_tx_skb(priv, skb))
2700 dev_kfree_skb_any(skb);
2701
2702 IWL_DEBUG_MACDUMP("leave\n");
2703 return 0;
2704 }
2705
2706 static int iwl_mac_add_interface(struct ieee80211_hw *hw,
2707 struct ieee80211_if_init_conf *conf)
2708 {
2709 struct iwl_priv *priv = hw->priv;
2710 unsigned long flags;
2711
2712 IWL_DEBUG_MAC80211("enter: type %d\n", conf->type);
2713
2714 if (priv->vif) {
2715 IWL_DEBUG_MAC80211("leave - vif != NULL\n");
2716 return -EOPNOTSUPP;
2717 }
2718
2719 spin_lock_irqsave(&priv->lock, flags);
2720 priv->vif = conf->vif;
2721 priv->iw_mode = conf->type;
2722
2723 spin_unlock_irqrestore(&priv->lock, flags);
2724
2725 mutex_lock(&priv->mutex);
2726
2727 if (conf->mac_addr) {
2728 IWL_DEBUG_MAC80211("Set %pM\n", conf->mac_addr);
2729 memcpy(priv->mac_addr, conf->mac_addr, ETH_ALEN);
2730 }
2731
2732 if (iwl_set_mode(priv, conf->type) == -EAGAIN)
2733 /* we are not ready, will run again when ready */
2734 set_bit(STATUS_MODE_PENDING, &priv->status);
2735
2736 mutex_unlock(&priv->mutex);
2737
2738 IWL_DEBUG_MAC80211("leave\n");
2739 return 0;
2740 }
2741
2742 /**
2743 * iwl_mac_config - mac80211 config callback
2744 *
2745 * We ignore conf->flags & IEEE80211_CONF_SHORT_SLOT_TIME since it seems to
2746 * be set inappropriately and the driver currently sets the hardware up to
2747 * use it whenever needed.
2748 */
2749 static int iwl_mac_config(struct ieee80211_hw *hw, u32 changed)
2750 {
2751 struct iwl_priv *priv = hw->priv;
2752 const struct iwl_channel_info *ch_info;
2753 struct ieee80211_conf *conf = &hw->conf;
2754 unsigned long flags;
2755 int ret = 0;
2756 u16 channel;
2757
2758 mutex_lock(&priv->mutex);
2759 IWL_DEBUG_MAC80211("enter to channel %d\n", conf->channel->hw_value);
2760
2761 priv->current_ht_config.is_ht = conf->ht.enabled;
2762
2763 if (conf->radio_enabled && iwl_radio_kill_sw_enable_radio(priv)) {
2764 IWL_DEBUG_MAC80211("leave - RF-KILL - waiting for uCode\n");
2765 goto out;
2766 }
2767
2768 if (!conf->radio_enabled)
2769 iwl_radio_kill_sw_disable_radio(priv);
2770
2771 if (!iwl_is_ready(priv)) {
2772 IWL_DEBUG_MAC80211("leave - not ready\n");
2773 ret = -EIO;
2774 goto out;
2775 }
2776
2777 if (unlikely(!priv->cfg->mod_params->disable_hw_scan &&
2778 test_bit(STATUS_SCANNING, &priv->status))) {
2779 IWL_DEBUG_MAC80211("leave - scanning\n");
2780 mutex_unlock(&priv->mutex);
2781 return 0;
2782 }
2783
2784 channel = ieee80211_frequency_to_channel(conf->channel->center_freq);
2785 ch_info = iwl_get_channel_info(priv, conf->channel->band, channel);
2786 if (!is_channel_valid(ch_info)) {
2787 IWL_DEBUG_MAC80211("leave - invalid channel\n");
2788 ret = -EINVAL;
2789 goto out;
2790 }
2791
2792 if (priv->iw_mode == NL80211_IFTYPE_ADHOC &&
2793 !is_channel_ibss(ch_info)) {
2794 IWL_ERROR("channel %d in band %d not IBSS channel\n",
2795 conf->channel->hw_value, conf->channel->band);
2796 ret = -EINVAL;
2797 goto out;
2798 }
2799
2800 spin_lock_irqsave(&priv->lock, flags);
2801
2802
2803 /* if we are switching from ht to 2.4 clear flags
2804 * from any ht related info since 2.4 does not
2805 * support ht */
2806 if ((le16_to_cpu(priv->staging_rxon.channel) != channel)
2807 #ifdef IEEE80211_CONF_CHANNEL_SWITCH
2808 && !(conf->flags & IEEE80211_CONF_CHANNEL_SWITCH)
2809 #endif
2810 )
2811 priv->staging_rxon.flags = 0;
2812
2813 iwl_set_rxon_channel(priv, conf->channel);
2814
2815 iwl_set_flags_for_band(priv, conf->channel->band);
2816
2817 /* The list of supported rates and rate mask can be different
2818 * for each band; since the band may have changed, reset
2819 * the rate mask to what mac80211 lists */
2820 iwl_set_rate(priv);
2821
2822 spin_unlock_irqrestore(&priv->lock, flags);
2823
2824 #ifdef IEEE80211_CONF_CHANNEL_SWITCH
2825 if (conf->flags & IEEE80211_CONF_CHANNEL_SWITCH) {
2826 iwl_hw_channel_switch(priv, conf->channel);
2827 goto out;
2828 }
2829 #endif
2830
2831 if (!conf->radio_enabled) {
2832 IWL_DEBUG_MAC80211("leave - radio disabled\n");
2833 goto out;
2834 }
2835
2836 if (iwl_is_rfkill(priv)) {
2837 IWL_DEBUG_MAC80211("leave - RF kill\n");
2838 ret = -EIO;
2839 goto out;
2840 }
2841
2842 if (conf->flags & IEEE80211_CONF_PS)
2843 ret = iwl_power_set_user_mode(priv, IWL_POWER_INDEX_3);
2844 else
2845 ret = iwl_power_set_user_mode(priv, IWL_POWER_MODE_CAM);
2846 if (ret)
2847 IWL_DEBUG_MAC80211("Error setting power level\n");
2848
2849 IWL_DEBUG_MAC80211("TX Power old=%d new=%d\n",
2850 priv->tx_power_user_lmt, conf->power_level);
2851
2852 iwl_set_tx_power(priv, conf->power_level, false);
2853
2854 iwl_set_rate(priv);
2855
2856 if (memcmp(&priv->active_rxon,
2857 &priv->staging_rxon, sizeof(priv->staging_rxon)))
2858 iwl_commit_rxon(priv);
2859 else
2860 IWL_DEBUG_INFO("No re-sending same RXON configuration.\n");
2861
2862 IWL_DEBUG_MAC80211("leave\n");
2863
2864 out:
2865 mutex_unlock(&priv->mutex);
2866 return ret;
2867 }
2868
2869 static void iwl_config_ap(struct iwl_priv *priv)
2870 {
2871 int ret = 0;
2872 unsigned long flags;
2873
2874 if (test_bit(STATUS_EXIT_PENDING, &priv->status))
2875 return;
2876
2877 /* The following should be done only at AP bring up */
2878 if (!iwl_is_associated(priv)) {
2879
2880 /* RXON - unassoc (to set timing command) */
2881 priv->staging_rxon.filter_flags &= ~RXON_FILTER_ASSOC_MSK;
2882 iwl_commit_rxon(priv);
2883
2884 /* RXON Timing */
2885 iwl_setup_rxon_timing(priv);
2886 ret = iwl_send_cmd_pdu(priv, REPLY_RXON_TIMING,
2887 sizeof(priv->rxon_timing), &priv->rxon_timing);
2888 if (ret)
2889 IWL_WARNING("REPLY_RXON_TIMING failed - "
2890 "Attempting to continue.\n");
2891
2892 iwl_set_rxon_chain(priv);
2893
2894 /* FIXME: what should be the assoc_id for AP? */
2895 priv->staging_rxon.assoc_id = cpu_to_le16(priv->assoc_id);
2896 if (priv->assoc_capability & WLAN_CAPABILITY_SHORT_PREAMBLE)
2897 priv->staging_rxon.flags |=
2898 RXON_FLG_SHORT_PREAMBLE_MSK;
2899 else
2900 priv->staging_rxon.flags &=
2901 ~RXON_FLG_SHORT_PREAMBLE_MSK;
2902
2903 if (priv->staging_rxon.flags & RXON_FLG_BAND_24G_MSK) {
2904 if (priv->assoc_capability &
2905 WLAN_CAPABILITY_SHORT_SLOT_TIME)
2906 priv->staging_rxon.flags |=
2907 RXON_FLG_SHORT_SLOT_MSK;
2908 else
2909 priv->staging_rxon.flags &=
2910 ~RXON_FLG_SHORT_SLOT_MSK;
2911
2912 if (priv->iw_mode == NL80211_IFTYPE_ADHOC)
2913 priv->staging_rxon.flags &=
2914 ~RXON_FLG_SHORT_SLOT_MSK;
2915 }
2916 /* restore RXON assoc */
2917 priv->staging_rxon.filter_flags |= RXON_FILTER_ASSOC_MSK;
2918 iwl_commit_rxon(priv);
2919 spin_lock_irqsave(&priv->lock, flags);
2920 iwl_activate_qos(priv, 1);
2921 spin_unlock_irqrestore(&priv->lock, flags);
2922 iwl_rxon_add_station(priv, iwl_bcast_addr, 0);
2923 }
2924 iwl_send_beacon_cmd(priv);
2925
2926 /* FIXME - we need to add code here to detect a totally new
2927 * configuration, reset the AP, unassoc, rxon timing, assoc,
2928 * clear sta table, add BCAST sta... */
2929 }
2930
2931 /* temporary */
2932 static int iwl_mac_beacon_update(struct ieee80211_hw *hw, struct sk_buff *skb);
2933
2934 static int iwl_mac_config_interface(struct ieee80211_hw *hw,
2935 struct ieee80211_vif *vif,
2936 struct ieee80211_if_conf *conf)
2937 {
2938 struct iwl_priv *priv = hw->priv;
2939 int rc;
2940
2941 if (conf == NULL)
2942 return -EIO;
2943
2944 if (priv->vif != vif) {
2945 IWL_DEBUG_MAC80211("leave - priv->vif != vif\n");
2946 return 0;
2947 }
2948
2949 if (priv->iw_mode == NL80211_IFTYPE_ADHOC &&
2950 conf->changed & IEEE80211_IFCC_BEACON) {
2951 struct sk_buff *beacon = ieee80211_beacon_get(hw, vif);
2952 if (!beacon)
2953 return -ENOMEM;
2954 rc = iwl_mac_beacon_update(hw, beacon);
2955 if (rc)
2956 return rc;
2957 }
2958
2959 if (!iwl_is_alive(priv))
2960 return -EAGAIN;
2961
2962 mutex_lock(&priv->mutex);
2963
2964 if (conf->bssid)
2965 IWL_DEBUG_MAC80211("bssid: %pM\n", conf->bssid);
2966
2967 /*
2968 * very dubious code was here; the probe filtering flag is never set:
2969 *
2970 if (unlikely(test_bit(STATUS_SCANNING, &priv->status)) &&
2971 !(priv->hw->flags & IEEE80211_HW_NO_PROBE_FILTERING)) {
2972 */
2973
2974 if (priv->iw_mode == NL80211_IFTYPE_AP) {
2975 if (!conf->bssid) {
2976 conf->bssid = priv->mac_addr;
2977 memcpy(priv->bssid, priv->mac_addr, ETH_ALEN);
2978 IWL_DEBUG_MAC80211("bssid was set to: %pM\n",
2979 conf->bssid);
2980 }
2981 if (priv->ibss_beacon)
2982 dev_kfree_skb(priv->ibss_beacon);
2983
2984 priv->ibss_beacon = ieee80211_beacon_get(hw, vif);
2985 }
2986
2987 if (iwl_is_rfkill(priv))
2988 goto done;
2989
2990 if (conf->bssid && !is_zero_ether_addr(conf->bssid) &&
2991 !is_multicast_ether_addr(conf->bssid)) {
2992 /* If there is currently a HW scan going on in the background
2993 * then we need to cancel it else the RXON below will fail. */
2994 if (iwl_scan_cancel_timeout(priv, 100)) {
2995 IWL_WARNING("Aborted scan still in progress "
2996 "after 100ms\n");
2997 IWL_DEBUG_MAC80211("leaving - scan abort failed.\n");
2998 mutex_unlock(&priv->mutex);
2999 return -EAGAIN;
3000 }
3001 memcpy(priv->staging_rxon.bssid_addr, conf->bssid, ETH_ALEN);
3002
3003 /* TODO: Audit driver for usage of these members and see
3004 * if mac80211 deprecates them (priv->bssid looks like it
3005 * shouldn't be there, but I haven't scanned the IBSS code
3006 * to verify) - jpk */
3007 memcpy(priv->bssid, conf->bssid, ETH_ALEN);
3008
3009 if (priv->iw_mode == NL80211_IFTYPE_AP)
3010 iwl_config_ap(priv);
3011 else {
3012 rc = iwl_commit_rxon(priv);
3013 if ((priv->iw_mode == NL80211_IFTYPE_STATION) && rc)
3014 iwl_rxon_add_station(
3015 priv, priv->active_rxon.bssid_addr, 1);
3016 }
3017
3018 } else {
3019 iwl_scan_cancel_timeout(priv, 100);
3020 priv->staging_rxon.filter_flags &= ~RXON_FILTER_ASSOC_MSK;
3021 iwl_commit_rxon(priv);
3022 }
3023
3024 done:
3025 IWL_DEBUG_MAC80211("leave\n");
3026 mutex_unlock(&priv->mutex);
3027
3028 return 0;
3029 }
3030
3031 static void iwl_configure_filter(struct ieee80211_hw *hw,
3032 unsigned int changed_flags,
3033 unsigned int *total_flags,
3034 int mc_count, struct dev_addr_list *mc_list)
3035 {
3036 struct iwl_priv *priv = hw->priv;
3037
3038 if (changed_flags & (*total_flags) & FIF_OTHER_BSS) {
3039 IWL_DEBUG_MAC80211("Enter: type %d (0x%x, 0x%x)\n",
3040 NL80211_IFTYPE_MONITOR,
3041 changed_flags, *total_flags);
3042 /* queue work 'cuz mac80211 is holding a lock which
3043 * prevents us from issuing (synchronous) f/w cmds */
3044 queue_work(priv->workqueue, &priv->set_monitor);
3045 }
3046 *total_flags &= FIF_OTHER_BSS | FIF_ALLMULTI |
3047 FIF_BCN_PRBRESP_PROMISC | FIF_CONTROL;
3048 }
3049
3050 static void iwl_mac_remove_interface(struct ieee80211_hw *hw,
3051 struct ieee80211_if_init_conf *conf)
3052 {
3053 struct iwl_priv *priv = hw->priv;
3054
3055 IWL_DEBUG_MAC80211("enter\n");
3056
3057 mutex_lock(&priv->mutex);
3058
3059 if (iwl_is_ready_rf(priv)) {
3060 iwl_scan_cancel_timeout(priv, 100);
3061 priv->staging_rxon.filter_flags &= ~RXON_FILTER_ASSOC_MSK;
3062 iwl_commit_rxon(priv);
3063 }
3064 if (priv->vif == conf->vif) {
3065 priv->vif = NULL;
3066 memset(priv->bssid, 0, ETH_ALEN);
3067 }
3068 mutex_unlock(&priv->mutex);
3069
3070 IWL_DEBUG_MAC80211("leave\n");
3071
3072 }
3073
3074 #define IWL_DELAY_NEXT_SCAN_AFTER_ASSOC (HZ*6)
3075 static void iwl_bss_info_changed(struct ieee80211_hw *hw,
3076 struct ieee80211_vif *vif,
3077 struct ieee80211_bss_conf *bss_conf,
3078 u32 changes)
3079 {
3080 struct iwl_priv *priv = hw->priv;
3081
3082 IWL_DEBUG_MAC80211("changes = 0x%X\n", changes);
3083
3084 if (changes & BSS_CHANGED_ERP_PREAMBLE) {
3085 IWL_DEBUG_MAC80211("ERP_PREAMBLE %d\n",
3086 bss_conf->use_short_preamble);
3087 if (bss_conf->use_short_preamble)
3088 priv->staging_rxon.flags |= RXON_FLG_SHORT_PREAMBLE_MSK;
3089 else
3090 priv->staging_rxon.flags &= ~RXON_FLG_SHORT_PREAMBLE_MSK;
3091 }
3092
3093 if (changes & BSS_CHANGED_ERP_CTS_PROT) {
3094 IWL_DEBUG_MAC80211("ERP_CTS %d\n", bss_conf->use_cts_prot);
3095 if (bss_conf->use_cts_prot && (priv->band != IEEE80211_BAND_5GHZ))
3096 priv->staging_rxon.flags |= RXON_FLG_TGG_PROTECT_MSK;
3097 else
3098 priv->staging_rxon.flags &= ~RXON_FLG_TGG_PROTECT_MSK;
3099 }
3100
3101 if (changes & BSS_CHANGED_HT) {
3102 iwl_ht_conf(priv, bss_conf);
3103 iwl_set_rxon_chain(priv);
3104 }
3105
3106 if (changes & BSS_CHANGED_ASSOC) {
3107 IWL_DEBUG_MAC80211("ASSOC %d\n", bss_conf->assoc);
3108 /* This should never happen as this function should
3109 * never be called from interrupt context. */
3110 if (WARN_ON_ONCE(in_interrupt()))
3111 return;
3112 if (bss_conf->assoc) {
3113 priv->assoc_id = bss_conf->aid;
3114 priv->beacon_int = bss_conf->beacon_int;
3115 priv->power_data.dtim_period = bss_conf->dtim_period;
3116 priv->timestamp = bss_conf->timestamp;
3117 priv->assoc_capability = bss_conf->assoc_capability;
3118
3119 /* we have just associated, don't start scan too early
3120 * leave time for EAPOL exchange to complete
3121 */
3122 priv->next_scan_jiffies = jiffies +
3123 IWL_DELAY_NEXT_SCAN_AFTER_ASSOC;
3124 mutex_lock(&priv->mutex);
3125 iwl_post_associate(priv);
3126 mutex_unlock(&priv->mutex);
3127 } else {
3128 priv->assoc_id = 0;
3129 IWL_DEBUG_MAC80211("DISASSOC %d\n", bss_conf->assoc);
3130 }
3131 } else if (changes && iwl_is_associated(priv) && priv->assoc_id) {
3132 IWL_DEBUG_MAC80211("Associated Changes %d\n", changes);
3133 iwl_send_rxon_assoc(priv);
3134 }
3135
3136 }
3137
3138 static int iwl_mac_hw_scan(struct ieee80211_hw *hw, u8 *ssid, size_t ssid_len)
3139 {
3140 unsigned long flags;
3141 struct iwl_priv *priv = hw->priv;
3142 int ret;
3143
3144 IWL_DEBUG_MAC80211("enter\n");
3145
3146 mutex_lock(&priv->mutex);
3147 spin_lock_irqsave(&priv->lock, flags);
3148
3149 if (!iwl_is_ready_rf(priv)) {
3150 ret = -EIO;
3151 IWL_DEBUG_MAC80211("leave - not ready or exit pending\n");
3152 goto out_unlock;
3153 }
3154
3155 if (priv->iw_mode == NL80211_IFTYPE_AP) { /* APs don't scan */
3156 ret = -EIO;
3157 IWL_ERROR("ERROR: APs don't scan\n");
3158 goto out_unlock;
3159 }
3160
3161 /* We don't schedule scan within next_scan_jiffies period.
3162 * Avoid scanning during possible EAPOL exchange, return
3163 * success immediately.
3164 */
3165 if (priv->next_scan_jiffies &&
3166 time_after(priv->next_scan_jiffies, jiffies)) {
3167 IWL_DEBUG_SCAN("scan rejected: within next scan period\n");
3168 queue_work(priv->workqueue, &priv->scan_completed);
3169 ret = 0;
3170 goto out_unlock;
3171 }
3172
3173 /* if we just finished scan ask for delay */
3174 if (iwl_is_associated(priv) && priv->last_scan_jiffies &&
3175 time_after(priv->last_scan_jiffies + IWL_DELAY_NEXT_SCAN, jiffies)) {
3176 IWL_DEBUG_SCAN("scan rejected: within previous scan period\n");
3177 queue_work(priv->workqueue, &priv->scan_completed);
3178 ret = 0;
3179 goto out_unlock;
3180 }
3181
3182 if (ssid_len) {
3183 priv->one_direct_scan = 1;
3184 priv->direct_ssid_len = min_t(u8, ssid_len, IW_ESSID_MAX_SIZE);
3185 memcpy(priv->direct_ssid, ssid, priv->direct_ssid_len);
3186 } else {
3187 priv->one_direct_scan = 0;
3188 }
3189
3190 ret = iwl_scan_initiate(priv);
3191
3192 IWL_DEBUG_MAC80211("leave\n");
3193
3194 out_unlock:
3195 spin_unlock_irqrestore(&priv->lock, flags);
3196 mutex_unlock(&priv->mutex);
3197
3198 return ret;
3199 }
3200
3201 static void iwl_mac_update_tkip_key(struct ieee80211_hw *hw,
3202 struct ieee80211_key_conf *keyconf, const u8 *addr,
3203 u32 iv32, u16 *phase1key)
3204 {
3205 struct iwl_priv *priv = hw->priv;
3206 u8 sta_id = IWL_INVALID_STATION;
3207 unsigned long flags;
3208 __le16 key_flags = 0;
3209 int i;
3210
3211 IWL_DEBUG_MAC80211("enter\n");
3212
3213 sta_id = iwl_find_station(priv, addr);
3214 if (sta_id == IWL_INVALID_STATION) {
3215 IWL_DEBUG_MAC80211("leave - %pM not in station map.\n",
3216 addr);
3217 return;
3218 }
3219
3220 if (iwl_scan_cancel(priv)) {
3221 /* cancel scan failed, just live w/ bad key and rely
3222 briefly on SW decryption */
3223 return;
3224 }
3225
3226 key_flags |= (STA_KEY_FLG_TKIP | STA_KEY_FLG_MAP_KEY_MSK);
3227 key_flags |= cpu_to_le16(keyconf->keyidx << STA_KEY_FLG_KEYID_POS);
3228 key_flags &= ~STA_KEY_FLG_INVALID;
3229
3230 if (sta_id == priv->hw_params.bcast_sta_id)
3231 key_flags |= STA_KEY_MULTICAST_MSK;
3232
3233 spin_lock_irqsave(&priv->sta_lock, flags);
3234
3235 priv->stations[sta_id].sta.key.key_flags = key_flags;
3236 priv->stations[sta_id].sta.key.tkip_rx_tsc_byte2 = (u8) iv32;
3237
3238 for (i = 0; i < 5; i++)
3239 priv->stations[sta_id].sta.key.tkip_rx_ttak[i] =
3240 cpu_to_le16(phase1key[i]);
3241
3242 priv->stations[sta_id].sta.sta.modify_mask = STA_MODIFY_KEY_MASK;
3243 priv->stations[sta_id].sta.mode = STA_CONTROL_MODIFY_MSK;
3244
3245 iwl_send_add_sta(priv, &priv->stations[sta_id].sta, CMD_ASYNC);
3246
3247 spin_unlock_irqrestore(&priv->sta_lock, flags);
3248
3249 IWL_DEBUG_MAC80211("leave\n");
3250 }
3251
3252 static int iwl_mac_set_key(struct ieee80211_hw *hw, enum set_key_cmd cmd,
3253 const u8 *local_addr, const u8 *addr,
3254 struct ieee80211_key_conf *key)
3255 {
3256 struct iwl_priv *priv = hw->priv;
3257 int ret = 0;
3258 u8 sta_id = IWL_INVALID_STATION;
3259 u8 is_default_wep_key = 0;
3260
3261 IWL_DEBUG_MAC80211("enter\n");
3262
3263 if (priv->hw_params.sw_crypto) {
3264 IWL_DEBUG_MAC80211("leave - hwcrypto disabled\n");
3265 return -EOPNOTSUPP;
3266 }
3267
3268 if (is_zero_ether_addr(addr))
3269 /* only support pairwise keys */
3270 return -EOPNOTSUPP;
3271
3272 sta_id = iwl_find_station(priv, addr);
3273 if (sta_id == IWL_INVALID_STATION) {
3274 IWL_DEBUG_MAC80211("leave - %pM not in station map.\n",
3275 addr);
3276 return -EINVAL;
3277
3278 }
3279
3280 mutex_lock(&priv->mutex);
3281 iwl_scan_cancel_timeout(priv, 100);
3282 mutex_unlock(&priv->mutex);
3283
3284 /* If we are getting WEP group key and we didn't receive any key mapping
3285 * so far, we are in legacy wep mode (group key only), otherwise we are
3286 * in 1X mode.
3287 * In legacy wep mode, we use another host command to the uCode */
3288 if (key->alg == ALG_WEP && sta_id == priv->hw_params.bcast_sta_id &&
3289 priv->iw_mode != NL80211_IFTYPE_AP) {
3290 if (cmd == SET_KEY)
3291 is_default_wep_key = !priv->key_mapping_key;
3292 else
3293 is_default_wep_key =
3294 (key->hw_key_idx == HW_KEY_DEFAULT);
3295 }
3296
3297 switch (cmd) {
3298 case SET_KEY:
3299 if (is_default_wep_key)
3300 ret = iwl_set_default_wep_key(priv, key);
3301 else
3302 ret = iwl_set_dynamic_key(priv, key, sta_id);
3303
3304 IWL_DEBUG_MAC80211("enable hwcrypto key\n");
3305 break;
3306 case DISABLE_KEY:
3307 if (is_default_wep_key)
3308 ret = iwl_remove_default_wep_key(priv, key);
3309 else
3310 ret = iwl_remove_dynamic_key(priv, key, sta_id);
3311
3312 IWL_DEBUG_MAC80211("disable hwcrypto key\n");
3313 break;
3314 default:
3315 ret = -EINVAL;
3316 }
3317
3318 IWL_DEBUG_MAC80211("leave\n");
3319
3320 return ret;
3321 }
3322
3323 static int iwl_mac_conf_tx(struct ieee80211_hw *hw, u16 queue,
3324 const struct ieee80211_tx_queue_params *params)
3325 {
3326 struct iwl_priv *priv = hw->priv;
3327 unsigned long flags;
3328 int q;
3329
3330 IWL_DEBUG_MAC80211("enter\n");
3331
3332 if (!iwl_is_ready_rf(priv)) {
3333 IWL_DEBUG_MAC80211("leave - RF not ready\n");
3334 return -EIO;
3335 }
3336
3337 if (queue >= AC_NUM) {
3338 IWL_DEBUG_MAC80211("leave - queue >= AC_NUM %d\n", queue);
3339 return 0;
3340 }
3341
3342 if (!priv->qos_data.qos_enable) {
3343 priv->qos_data.qos_active = 0;
3344 IWL_DEBUG_MAC80211("leave - qos not enabled\n");
3345 return 0;
3346 }
3347 q = AC_NUM - 1 - queue;
3348
3349 spin_lock_irqsave(&priv->lock, flags);
3350
3351 priv->qos_data.def_qos_parm.ac[q].cw_min = cpu_to_le16(params->cw_min);
3352 priv->qos_data.def_qos_parm.ac[q].cw_max = cpu_to_le16(params->cw_max);
3353 priv->qos_data.def_qos_parm.ac[q].aifsn = params->aifs;
3354 priv->qos_data.def_qos_parm.ac[q].edca_txop =
3355 cpu_to_le16((params->txop * 32));
3356
3357 priv->qos_data.def_qos_parm.ac[q].reserved1 = 0;
3358 priv->qos_data.qos_active = 1;
3359
3360 if (priv->iw_mode == NL80211_IFTYPE_AP)
3361 iwl_activate_qos(priv, 1);
3362 else if (priv->assoc_id && iwl_is_associated(priv))
3363 iwl_activate_qos(priv, 0);
3364
3365 spin_unlock_irqrestore(&priv->lock, flags);
3366
3367 IWL_DEBUG_MAC80211("leave\n");
3368 return 0;
3369 }
3370
3371 static int iwl_mac_ampdu_action(struct ieee80211_hw *hw,
3372 enum ieee80211_ampdu_mlme_action action,
3373 struct ieee80211_sta *sta, u16 tid, u16 *ssn)
3374 {
3375 struct iwl_priv *priv = hw->priv;
3376
3377 IWL_DEBUG_HT("A-MPDU action on addr %pM tid %d\n",
3378 sta->addr, tid);
3379
3380 if (!(priv->cfg->sku & IWL_SKU_N))
3381 return -EACCES;
3382
3383 switch (action) {
3384 case IEEE80211_AMPDU_RX_START:
3385 IWL_DEBUG_HT("start Rx\n");
3386 return iwl_rx_agg_start(priv, sta->addr, tid, *ssn);
3387 case IEEE80211_AMPDU_RX_STOP:
3388 IWL_DEBUG_HT("stop Rx\n");
3389 return iwl_rx_agg_stop(priv, sta->addr, tid);
3390 case IEEE80211_AMPDU_TX_START:
3391 IWL_DEBUG_HT("start Tx\n");
3392 return iwl_tx_agg_start(priv, sta->addr, tid, ssn);
3393 case IEEE80211_AMPDU_TX_STOP:
3394 IWL_DEBUG_HT("stop Tx\n");
3395 return iwl_tx_agg_stop(priv, sta->addr, tid);
3396 default:
3397 IWL_DEBUG_HT("unknown\n");
3398 return -EINVAL;
3399 break;
3400 }
3401 return 0;
3402 }
3403 static int iwl_mac_get_tx_stats(struct ieee80211_hw *hw,
3404 struct ieee80211_tx_queue_stats *stats)
3405 {
3406 struct iwl_priv *priv = hw->priv;
3407 int i, avail;
3408 struct iwl_tx_queue *txq;
3409 struct iwl_queue *q;
3410 unsigned long flags;
3411
3412 IWL_DEBUG_MAC80211("enter\n");
3413
3414 if (!iwl_is_ready_rf(priv)) {
3415 IWL_DEBUG_MAC80211("leave - RF not ready\n");
3416 return -EIO;
3417 }
3418
3419 spin_lock_irqsave(&priv->lock, flags);
3420
3421 for (i = 0; i < AC_NUM; i++) {
3422 txq = &priv->txq[i];
3423 q = &txq->q;
3424 avail = iwl_queue_space(q);
3425
3426 stats[i].len = q->n_window - avail;
3427 stats[i].limit = q->n_window - q->high_mark;
3428 stats[i].count = q->n_window;
3429
3430 }
3431 spin_unlock_irqrestore(&priv->lock, flags);
3432
3433 IWL_DEBUG_MAC80211("leave\n");
3434
3435 return 0;
3436 }
3437
3438 static int iwl_mac_get_stats(struct ieee80211_hw *hw,
3439 struct ieee80211_low_level_stats *stats)
3440 {
3441 struct iwl_priv *priv = hw->priv;
3442
3443 priv = hw->priv;
3444 IWL_DEBUG_MAC80211("enter\n");
3445 IWL_DEBUG_MAC80211("leave\n");
3446
3447 return 0;
3448 }
3449
3450 static void iwl_mac_reset_tsf(struct ieee80211_hw *hw)
3451 {
3452 struct iwl_priv *priv = hw->priv;
3453 unsigned long flags;
3454
3455 mutex_lock(&priv->mutex);
3456 IWL_DEBUG_MAC80211("enter\n");
3457
3458 spin_lock_irqsave(&priv->lock, flags);
3459 memset(&priv->current_ht_config, 0, sizeof(struct iwl_ht_info));
3460 spin_unlock_irqrestore(&priv->lock, flags);
3461
3462 iwl_reset_qos(priv);
3463
3464 spin_lock_irqsave(&priv->lock, flags);
3465 priv->assoc_id = 0;
3466 priv->assoc_capability = 0;
3467 priv->assoc_station_added = 0;
3468
3469 /* new association get rid of ibss beacon skb */
3470 if (priv->ibss_beacon)
3471 dev_kfree_skb(priv->ibss_beacon);
3472
3473 priv->ibss_beacon = NULL;
3474
3475 priv->beacon_int = priv->hw->conf.beacon_int;
3476 priv->timestamp = 0;
3477 if ((priv->iw_mode == NL80211_IFTYPE_STATION))
3478 priv->beacon_int = 0;
3479
3480 spin_unlock_irqrestore(&priv->lock, flags);
3481
3482 if (!iwl_is_ready_rf(priv)) {
3483 IWL_DEBUG_MAC80211("leave - not ready\n");
3484 mutex_unlock(&priv->mutex);
3485 return;
3486 }
3487
3488 /* we are restarting association process
3489 * clear RXON_FILTER_ASSOC_MSK bit
3490 */
3491 if (priv->iw_mode != NL80211_IFTYPE_AP) {
3492 iwl_scan_cancel_timeout(priv, 100);
3493 priv->staging_rxon.filter_flags &= ~RXON_FILTER_ASSOC_MSK;
3494 iwl_commit_rxon(priv);
3495 }
3496
3497 iwl_power_update_mode(priv, 0);
3498
3499 /* Per mac80211.h: This is only used in IBSS mode... */
3500 if (priv->iw_mode != NL80211_IFTYPE_ADHOC) {
3501
3502 /* switch to CAM during association period.
3503 * the ucode will block any association/authentication
3504 * frome during assiciation period if it can not hear
3505 * the AP because of PM. the timer enable PM back is
3506 * association do not complete
3507 */
3508 if (priv->hw->conf.channel->flags & (IEEE80211_CHAN_PASSIVE_SCAN |
3509 IEEE80211_CHAN_RADAR))
3510 iwl_power_disable_management(priv, 3000);
3511
3512 IWL_DEBUG_MAC80211("leave - not in IBSS\n");
3513 mutex_unlock(&priv->mutex);
3514 return;
3515 }
3516
3517 iwl_set_rate(priv);
3518
3519 mutex_unlock(&priv->mutex);
3520
3521 IWL_DEBUG_MAC80211("leave\n");
3522 }
3523
3524 static int iwl_mac_beacon_update(struct ieee80211_hw *hw, struct sk_buff *skb)
3525 {
3526 struct iwl_priv *priv = hw->priv;
3527 unsigned long flags;
3528 __le64 timestamp;
3529
3530 mutex_lock(&priv->mutex);
3531 IWL_DEBUG_MAC80211("enter\n");
3532
3533 if (!iwl_is_ready_rf(priv)) {
3534 IWL_DEBUG_MAC80211("leave - RF not ready\n");
3535 mutex_unlock(&priv->mutex);
3536 return -EIO;
3537 }
3538
3539 if (priv->iw_mode != NL80211_IFTYPE_ADHOC) {
3540 IWL_DEBUG_MAC80211("leave - not IBSS\n");
3541 mutex_unlock(&priv->mutex);
3542 return -EIO;
3543 }
3544
3545 spin_lock_irqsave(&priv->lock, flags);
3546
3547 if (priv->ibss_beacon)
3548 dev_kfree_skb(priv->ibss_beacon);
3549
3550 priv->ibss_beacon = skb;
3551
3552 priv->assoc_id = 0;
3553 timestamp = ((struct ieee80211_mgmt *)skb->data)->u.beacon.timestamp;
3554 priv->timestamp = le64_to_cpu(timestamp);
3555
3556 IWL_DEBUG_MAC80211("leave\n");
3557 spin_unlock_irqrestore(&priv->lock, flags);
3558
3559 iwl_reset_qos(priv);
3560
3561 iwl_post_associate(priv);
3562
3563 mutex_unlock(&priv->mutex);
3564
3565 return 0;
3566 }
3567
3568 /*****************************************************************************
3569 *
3570 * sysfs attributes
3571 *
3572 *****************************************************************************/
3573
3574 #ifdef CONFIG_IWLWIFI_DEBUG
3575
3576 /*
3577 * The following adds a new attribute to the sysfs representation
3578 * of this device driver (i.e. a new file in /sys/bus/pci/drivers/iwl/)
3579 * used for controlling the debug level.
3580 *
3581 * See the level definitions in iwl for details.
3582 */
3583
3584 static ssize_t show_debug_level(struct device *d,
3585 struct device_attribute *attr, char *buf)
3586 {
3587 struct iwl_priv *priv = d->driver_data;
3588
3589 return sprintf(buf, "0x%08X\n", priv->debug_level);
3590 }
3591 static ssize_t store_debug_level(struct device *d,
3592 struct device_attribute *attr,
3593 const char *buf, size_t count)
3594 {
3595 struct iwl_priv *priv = d->driver_data;
3596 unsigned long val;
3597 int ret;
3598
3599 ret = strict_strtoul(buf, 0, &val);
3600 if (ret)
3601 printk(KERN_INFO DRV_NAME
3602 ": %s is not in hex or decimal form.\n", buf);
3603 else
3604 priv->debug_level = val;
3605
3606 return strnlen(buf, count);
3607 }
3608
3609 static DEVICE_ATTR(debug_level, S_IWUSR | S_IRUGO,
3610 show_debug_level, store_debug_level);
3611
3612
3613 #endif /* CONFIG_IWLWIFI_DEBUG */
3614
3615
3616 static ssize_t show_version(struct device *d,
3617 struct device_attribute *attr, char *buf)
3618 {
3619 struct iwl_priv *priv = d->driver_data;
3620 struct iwl_alive_resp *palive = &priv->card_alive;
3621 ssize_t pos = 0;
3622 u16 eeprom_ver;
3623
3624 if (palive->is_valid)
3625 pos += sprintf(buf + pos,
3626 "fw version: 0x%01X.0x%01X.0x%01X.0x%01X\n"
3627 "fw type: 0x%01X 0x%01X\n",
3628 palive->ucode_major, palive->ucode_minor,
3629 palive->sw_rev[0], palive->sw_rev[1],
3630 palive->ver_type, palive->ver_subtype);
3631 else
3632 pos += sprintf(buf + pos, "fw not loaded\n");
3633
3634 if (priv->eeprom) {
3635 eeprom_ver = iwl_eeprom_query16(priv, EEPROM_VERSION);
3636 pos += sprintf(buf + pos, "EEPROM version: 0x%x\n",
3637 eeprom_ver);
3638 } else {
3639 pos += sprintf(buf + pos, "EEPROM not initialzed\n");
3640 }
3641
3642 return pos;
3643 }
3644
3645 static DEVICE_ATTR(version, S_IWUSR | S_IRUGO, show_version, NULL);
3646
3647 static ssize_t show_temperature(struct device *d,
3648 struct device_attribute *attr, char *buf)
3649 {
3650 struct iwl_priv *priv = (struct iwl_priv *)d->driver_data;
3651
3652 if (!iwl_is_alive(priv))
3653 return -EAGAIN;
3654
3655 return sprintf(buf, "%d\n", priv->temperature);
3656 }
3657
3658 static DEVICE_ATTR(temperature, S_IRUGO, show_temperature, NULL);
3659
3660 static ssize_t show_tx_power(struct device *d,
3661 struct device_attribute *attr, char *buf)
3662 {
3663 struct iwl_priv *priv = (struct iwl_priv *)d->driver_data;
3664 return sprintf(buf, "%d\n", priv->tx_power_user_lmt);
3665 }
3666
3667 static ssize_t store_tx_power(struct device *d,
3668 struct device_attribute *attr,
3669 const char *buf, size_t count)
3670 {
3671 struct iwl_priv *priv = (struct iwl_priv *)d->driver_data;
3672 unsigned long val;
3673 int ret;
3674
3675 ret = strict_strtoul(buf, 10, &val);
3676 if (ret)
3677 printk(KERN_INFO DRV_NAME
3678 ": %s is not in decimal form.\n", buf);
3679 else
3680 iwl_set_tx_power(priv, val, false);
3681
3682 return count;
3683 }
3684
3685 static DEVICE_ATTR(tx_power, S_IWUSR | S_IRUGO, show_tx_power, store_tx_power);
3686
3687 static ssize_t show_flags(struct device *d,
3688 struct device_attribute *attr, char *buf)
3689 {
3690 struct iwl_priv *priv = (struct iwl_priv *)d->driver_data;
3691
3692 return sprintf(buf, "0x%04X\n", priv->active_rxon.flags);
3693 }
3694
3695 static ssize_t store_flags(struct device *d,
3696 struct device_attribute *attr,
3697 const char *buf, size_t count)
3698 {
3699 struct iwl_priv *priv = (struct iwl_priv *)d->driver_data;
3700 unsigned long val;
3701 u32 flags;
3702 int ret = strict_strtoul(buf, 0, &val);
3703 if (ret)
3704 return ret;
3705 flags = (u32)val;
3706
3707 mutex_lock(&priv->mutex);
3708 if (le32_to_cpu(priv->staging_rxon.flags) != flags) {
3709 /* Cancel any currently running scans... */
3710 if (iwl_scan_cancel_timeout(priv, 100))
3711 IWL_WARNING("Could not cancel scan.\n");
3712 else {
3713 IWL_DEBUG_INFO("Commit rxon.flags = 0x%04X\n", flags);
3714 priv->staging_rxon.flags = cpu_to_le32(flags);
3715 iwl_commit_rxon(priv);
3716 }
3717 }
3718 mutex_unlock(&priv->mutex);
3719
3720 return count;
3721 }
3722
3723 static DEVICE_ATTR(flags, S_IWUSR | S_IRUGO, show_flags, store_flags);
3724
3725 static ssize_t show_filter_flags(struct device *d,
3726 struct device_attribute *attr, char *buf)
3727 {
3728 struct iwl_priv *priv = (struct iwl_priv *)d->driver_data;
3729
3730 return sprintf(buf, "0x%04X\n",
3731 le32_to_cpu(priv->active_rxon.filter_flags));
3732 }
3733
3734 static ssize_t store_filter_flags(struct device *d,
3735 struct device_attribute *attr,
3736 const char *buf, size_t count)
3737 {
3738 struct iwl_priv *priv = (struct iwl_priv *)d->driver_data;
3739 unsigned long val;
3740 u32 filter_flags;
3741 int ret = strict_strtoul(buf, 0, &val);
3742 if (ret)
3743 return ret;
3744 filter_flags = (u32)val;
3745
3746 mutex_lock(&priv->mutex);
3747 if (le32_to_cpu(priv->staging_rxon.filter_flags) != filter_flags) {
3748 /* Cancel any currently running scans... */
3749 if (iwl_scan_cancel_timeout(priv, 100))
3750 IWL_WARNING("Could not cancel scan.\n");
3751 else {
3752 IWL_DEBUG_INFO("Committing rxon.filter_flags = "
3753 "0x%04X\n", filter_flags);
3754 priv->staging_rxon.filter_flags =
3755 cpu_to_le32(filter_flags);
3756 iwl_commit_rxon(priv);
3757 }
3758 }
3759 mutex_unlock(&priv->mutex);
3760
3761 return count;
3762 }
3763
3764 static DEVICE_ATTR(filter_flags, S_IWUSR | S_IRUGO, show_filter_flags,
3765 store_filter_flags);
3766
3767 #ifdef CONFIG_IWLAGN_SPECTRUM_MEASUREMENT
3768
3769 static ssize_t show_measurement(struct device *d,
3770 struct device_attribute *attr, char *buf)
3771 {
3772 struct iwl_priv *priv = dev_get_drvdata(d);
3773 struct iwl4965_spectrum_notification measure_report;
3774 u32 size = sizeof(measure_report), len = 0, ofs = 0;
3775 u8 *data = (u8 *)&measure_report;
3776 unsigned long flags;
3777
3778 spin_lock_irqsave(&priv->lock, flags);
3779 if (!(priv->measurement_status & MEASUREMENT_READY)) {
3780 spin_unlock_irqrestore(&priv->lock, flags);
3781 return 0;
3782 }
3783 memcpy(&measure_report, &priv->measure_report, size);
3784 priv->measurement_status = 0;
3785 spin_unlock_irqrestore(&priv->lock, flags);
3786
3787 while (size && (PAGE_SIZE - len)) {
3788 hex_dump_to_buffer(data + ofs, size, 16, 1, buf + len,
3789 PAGE_SIZE - len, 1);
3790 len = strlen(buf);
3791 if (PAGE_SIZE - len)
3792 buf[len++] = '\n';
3793
3794 ofs += 16;
3795 size -= min(size, 16U);
3796 }
3797
3798 return len;
3799 }
3800
3801 static ssize_t store_measurement(struct device *d,
3802 struct device_attribute *attr,
3803 const char *buf, size_t count)
3804 {
3805 struct iwl_priv *priv = dev_get_drvdata(d);
3806 struct ieee80211_measurement_params params = {
3807 .channel = le16_to_cpu(priv->active_rxon.channel),
3808 .start_time = cpu_to_le64(priv->last_tsf),
3809 .duration = cpu_to_le16(1),
3810 };
3811 u8 type = IWL_MEASURE_BASIC;
3812 u8 buffer[32];
3813 u8 channel;
3814
3815 if (count) {
3816 char *p = buffer;
3817 strncpy(buffer, buf, min(sizeof(buffer), count));
3818 channel = simple_strtoul(p, NULL, 0);
3819 if (channel)
3820 params.channel = channel;
3821
3822 p = buffer;
3823 while (*p && *p != ' ')
3824 p++;
3825 if (*p)
3826 type = simple_strtoul(p + 1, NULL, 0);
3827 }
3828
3829 IWL_DEBUG_INFO("Invoking measurement of type %d on "
3830 "channel %d (for '%s')\n", type, params.channel, buf);
3831 iwl_get_measurement(priv, &params, type);
3832
3833 return count;
3834 }
3835
3836 static DEVICE_ATTR(measurement, S_IRUSR | S_IWUSR,
3837 show_measurement, store_measurement);
3838 #endif /* CONFIG_IWLAGN_SPECTRUM_MEASUREMENT */
3839
3840 static ssize_t store_retry_rate(struct device *d,
3841 struct device_attribute *attr,
3842 const char *buf, size_t count)
3843 {
3844 struct iwl_priv *priv = dev_get_drvdata(d);
3845 long val;
3846 int ret = strict_strtol(buf, 10, &val);
3847 if (!ret)
3848 return ret;
3849
3850 priv->retry_rate = (val > 0) ? val : 1;
3851
3852 return count;
3853 }
3854
3855 static ssize_t show_retry_rate(struct device *d,
3856 struct device_attribute *attr, char *buf)
3857 {
3858 struct iwl_priv *priv = dev_get_drvdata(d);
3859 return sprintf(buf, "%d", priv->retry_rate);
3860 }
3861
3862 static DEVICE_ATTR(retry_rate, S_IWUSR | S_IRUSR, show_retry_rate,
3863 store_retry_rate);
3864
3865 static ssize_t store_power_level(struct device *d,
3866 struct device_attribute *attr,
3867 const char *buf, size_t count)
3868 {
3869 struct iwl_priv *priv = dev_get_drvdata(d);
3870 int ret;
3871 unsigned long mode;
3872
3873
3874 mutex_lock(&priv->mutex);
3875
3876 if (!iwl_is_ready(priv)) {
3877 ret = -EAGAIN;
3878 goto out;
3879 }
3880
3881 ret = strict_strtoul(buf, 10, &mode);
3882 if (ret)
3883 goto out;
3884
3885 ret = iwl_power_set_user_mode(priv, mode);
3886 if (ret) {
3887 IWL_DEBUG_MAC80211("failed setting power mode.\n");
3888 goto out;
3889 }
3890 ret = count;
3891
3892 out:
3893 mutex_unlock(&priv->mutex);
3894 return ret;
3895 }
3896
3897 static ssize_t show_power_level(struct device *d,
3898 struct device_attribute *attr, char *buf)
3899 {
3900 struct iwl_priv *priv = dev_get_drvdata(d);
3901 int mode = priv->power_data.user_power_setting;
3902 int system = priv->power_data.system_power_setting;
3903 int level = priv->power_data.power_mode;
3904 char *p = buf;
3905
3906 switch (system) {
3907 case IWL_POWER_SYS_AUTO:
3908 p += sprintf(p, "SYSTEM:auto");
3909 break;
3910 case IWL_POWER_SYS_AC:
3911 p += sprintf(p, "SYSTEM:ac");
3912 break;
3913 case IWL_POWER_SYS_BATTERY:
3914 p += sprintf(p, "SYSTEM:battery");
3915 break;
3916 }
3917
3918 p += sprintf(p, "\tMODE:%s", (mode < IWL_POWER_AUTO)?"fixed":"auto");
3919 p += sprintf(p, "\tINDEX:%d", level);
3920 p += sprintf(p, "\n");
3921 return p - buf + 1;
3922 }
3923
3924 static DEVICE_ATTR(power_level, S_IWUSR | S_IRUSR, show_power_level,
3925 store_power_level);
3926
3927 static ssize_t show_channels(struct device *d,
3928 struct device_attribute *attr, char *buf)
3929 {
3930
3931 struct iwl_priv *priv = dev_get_drvdata(d);
3932 struct ieee80211_channel *channels = NULL;
3933 const struct ieee80211_supported_band *supp_band = NULL;
3934 int len = 0, i;
3935 int count = 0;
3936
3937 if (!test_bit(STATUS_GEO_CONFIGURED, &priv->status))
3938 return -EAGAIN;
3939
3940 supp_band = iwl_get_hw_mode(priv, IEEE80211_BAND_2GHZ);
3941 channels = supp_band->channels;
3942 count = supp_band->n_channels;
3943
3944 len += sprintf(&buf[len],
3945 "Displaying %d channels in 2.4GHz band "
3946 "(802.11bg):\n", count);
3947
3948 for (i = 0; i < count; i++)
3949 len += sprintf(&buf[len], "%d: %ddBm: BSS%s%s, %s.\n",
3950 ieee80211_frequency_to_channel(
3951 channels[i].center_freq),
3952 channels[i].max_power,
3953 channels[i].flags & IEEE80211_CHAN_RADAR ?
3954 " (IEEE 802.11h required)" : "",
3955 (!(channels[i].flags & IEEE80211_CHAN_NO_IBSS)
3956 || (channels[i].flags &
3957 IEEE80211_CHAN_RADAR)) ? "" :
3958 ", IBSS",
3959 channels[i].flags &
3960 IEEE80211_CHAN_PASSIVE_SCAN ?
3961 "passive only" : "active/passive");
3962
3963 supp_band = iwl_get_hw_mode(priv, IEEE80211_BAND_5GHZ);
3964 channels = supp_band->channels;
3965 count = supp_band->n_channels;
3966
3967 len += sprintf(&buf[len], "Displaying %d channels in 5.2GHz band "
3968 "(802.11a):\n", count);
3969
3970 for (i = 0; i < count; i++)
3971 len += sprintf(&buf[len], "%d: %ddBm: BSS%s%s, %s.\n",
3972 ieee80211_frequency_to_channel(
3973 channels[i].center_freq),
3974 channels[i].max_power,
3975 channels[i].flags & IEEE80211_CHAN_RADAR ?
3976 " (IEEE 802.11h required)" : "",
3977 ((channels[i].flags & IEEE80211_CHAN_NO_IBSS)
3978 || (channels[i].flags &
3979 IEEE80211_CHAN_RADAR)) ? "" :
3980 ", IBSS",
3981 channels[i].flags &
3982 IEEE80211_CHAN_PASSIVE_SCAN ?
3983 "passive only" : "active/passive");
3984
3985 return len;
3986 }
3987
3988 static DEVICE_ATTR(channels, S_IRUSR, show_channels, NULL);
3989
3990 static ssize_t show_statistics(struct device *d,
3991 struct device_attribute *attr, char *buf)
3992 {
3993 struct iwl_priv *priv = dev_get_drvdata(d);
3994 u32 size = sizeof(struct iwl_notif_statistics);
3995 u32 len = 0, ofs = 0;
3996 u8 *data = (u8 *)&priv->statistics;
3997 int rc = 0;
3998
3999 if (!iwl_is_alive(priv))
4000 return -EAGAIN;
4001
4002 mutex_lock(&priv->mutex);
4003 rc = iwl_send_statistics_request(priv, 0);
4004 mutex_unlock(&priv->mutex);
4005
4006 if (rc) {
4007 len = sprintf(buf,
4008 "Error sending statistics request: 0x%08X\n", rc);
4009 return len;
4010 }
4011
4012 while (size && (PAGE_SIZE - len)) {
4013 hex_dump_to_buffer(data + ofs, size, 16, 1, buf + len,
4014 PAGE_SIZE - len, 1);
4015 len = strlen(buf);
4016 if (PAGE_SIZE - len)
4017 buf[len++] = '\n';
4018
4019 ofs += 16;
4020 size -= min(size, 16U);
4021 }
4022
4023 return len;
4024 }
4025
4026 static DEVICE_ATTR(statistics, S_IRUGO, show_statistics, NULL);
4027
4028 static ssize_t show_status(struct device *d,
4029 struct device_attribute *attr, char *buf)
4030 {
4031 struct iwl_priv *priv = (struct iwl_priv *)d->driver_data;
4032 if (!iwl_is_alive(priv))
4033 return -EAGAIN;
4034 return sprintf(buf, "0x%08x\n", (int)priv->status);
4035 }
4036
4037 static DEVICE_ATTR(status, S_IRUGO, show_status, NULL);
4038
4039 /*****************************************************************************
4040 *
4041 * driver setup and teardown
4042 *
4043 *****************************************************************************/
4044
4045 static void iwl_setup_deferred_work(struct iwl_priv *priv)
4046 {
4047 priv->workqueue = create_workqueue(DRV_NAME);
4048
4049 init_waitqueue_head(&priv->wait_command_queue);
4050
4051 INIT_WORK(&priv->up, iwl_bg_up);
4052 INIT_WORK(&priv->restart, iwl_bg_restart);
4053 INIT_WORK(&priv->rx_replenish, iwl_bg_rx_replenish);
4054 INIT_WORK(&priv->rf_kill, iwl_bg_rf_kill);
4055 INIT_WORK(&priv->beacon_update, iwl_bg_beacon_update);
4056 INIT_WORK(&priv->set_monitor, iwl_bg_set_monitor);
4057 INIT_WORK(&priv->run_time_calib_work, iwl_bg_run_time_calib_work);
4058 INIT_DELAYED_WORK(&priv->init_alive_start, iwl_bg_init_alive_start);
4059 INIT_DELAYED_WORK(&priv->alive_start, iwl_bg_alive_start);
4060
4061 iwl_setup_scan_deferred_work(priv);
4062 iwl_setup_power_deferred_work(priv);
4063
4064 if (priv->cfg->ops->lib->setup_deferred_work)
4065 priv->cfg->ops->lib->setup_deferred_work(priv);
4066
4067 init_timer(&priv->statistics_periodic);
4068 priv->statistics_periodic.data = (unsigned long)priv;
4069 priv->statistics_periodic.function = iwl_bg_statistics_periodic;
4070
4071 tasklet_init(&priv->irq_tasklet, (void (*)(unsigned long))
4072 iwl_irq_tasklet, (unsigned long)priv);
4073 }
4074
4075 static void iwl_cancel_deferred_work(struct iwl_priv *priv)
4076 {
4077 if (priv->cfg->ops->lib->cancel_deferred_work)
4078 priv->cfg->ops->lib->cancel_deferred_work(priv);
4079
4080 cancel_delayed_work_sync(&priv->init_alive_start);
4081 cancel_delayed_work(&priv->scan_check);
4082 cancel_delayed_work_sync(&priv->set_power_save);
4083 cancel_delayed_work(&priv->alive_start);
4084 cancel_work_sync(&priv->beacon_update);
4085 del_timer_sync(&priv->statistics_periodic);
4086 }
4087
4088 static struct attribute *iwl_sysfs_entries[] = {
4089 &dev_attr_channels.attr,
4090 &dev_attr_flags.attr,
4091 &dev_attr_filter_flags.attr,
4092 #ifdef CONFIG_IWLAGN_SPECTRUM_MEASUREMENT
4093 &dev_attr_measurement.attr,
4094 #endif
4095 &dev_attr_power_level.attr,
4096 &dev_attr_retry_rate.attr,
4097 &dev_attr_statistics.attr,
4098 &dev_attr_status.attr,
4099 &dev_attr_temperature.attr,
4100 &dev_attr_tx_power.attr,
4101 #ifdef CONFIG_IWLWIFI_DEBUG
4102 &dev_attr_debug_level.attr,
4103 #endif
4104 &dev_attr_version.attr,
4105
4106 NULL
4107 };
4108
4109 static struct attribute_group iwl_attribute_group = {
4110 .name = NULL, /* put in device directory */
4111 .attrs = iwl_sysfs_entries,
4112 };
4113
4114 static struct ieee80211_ops iwl_hw_ops = {
4115 .tx = iwl_mac_tx,
4116 .start = iwl_mac_start,
4117 .stop = iwl_mac_stop,
4118 .add_interface = iwl_mac_add_interface,
4119 .remove_interface = iwl_mac_remove_interface,
4120 .config = iwl_mac_config,
4121 .config_interface = iwl_mac_config_interface,
4122 .configure_filter = iwl_configure_filter,
4123 .set_key = iwl_mac_set_key,
4124 .update_tkip_key = iwl_mac_update_tkip_key,
4125 .get_stats = iwl_mac_get_stats,
4126 .get_tx_stats = iwl_mac_get_tx_stats,
4127 .conf_tx = iwl_mac_conf_tx,
4128 .reset_tsf = iwl_mac_reset_tsf,
4129 .bss_info_changed = iwl_bss_info_changed,
4130 .ampdu_action = iwl_mac_ampdu_action,
4131 .hw_scan = iwl_mac_hw_scan
4132 };
4133
4134 static int iwl_pci_probe(struct pci_dev *pdev, const struct pci_device_id *ent)
4135 {
4136 int err = 0;
4137 struct iwl_priv *priv;
4138 struct ieee80211_hw *hw;
4139 struct iwl_cfg *cfg = (struct iwl_cfg *)(ent->driver_data);
4140 unsigned long flags;
4141
4142 /************************
4143 * 1. Allocating HW data
4144 ************************/
4145
4146 /* Disabling hardware scan means that mac80211 will perform scans
4147 * "the hard way", rather than using device's scan. */
4148 if (cfg->mod_params->disable_hw_scan) {
4149 if (cfg->mod_params->debug & IWL_DL_INFO)
4150 dev_printk(KERN_DEBUG, &(pdev->dev),
4151 "Disabling hw_scan\n");
4152 iwl_hw_ops.hw_scan = NULL;
4153 }
4154
4155 hw = iwl_alloc_all(cfg, &iwl_hw_ops);
4156 if (!hw) {
4157 err = -ENOMEM;
4158 goto out;
4159 }
4160 priv = hw->priv;
4161 /* At this point both hw and priv are allocated. */
4162
4163 SET_IEEE80211_DEV(hw, &pdev->dev);
4164
4165 IWL_DEBUG_INFO("*** LOAD DRIVER ***\n");
4166 priv->cfg = cfg;
4167 priv->pci_dev = pdev;
4168
4169 #ifdef CONFIG_IWLWIFI_DEBUG
4170 priv->debug_level = priv->cfg->mod_params->debug;
4171 atomic_set(&priv->restrict_refcnt, 0);
4172 #endif
4173
4174 /**************************
4175 * 2. Initializing PCI bus
4176 **************************/
4177 if (pci_enable_device(pdev)) {
4178 err = -ENODEV;
4179 goto out_ieee80211_free_hw;
4180 }
4181
4182 pci_set_master(pdev);
4183
4184 err = pci_set_dma_mask(pdev, DMA_BIT_MASK(36));
4185 if (!err)
4186 err = pci_set_consistent_dma_mask(pdev, DMA_BIT_MASK(36));
4187 if (err) {
4188 err = pci_set_dma_mask(pdev, DMA_BIT_MASK(32));
4189 if (!err)
4190 err = pci_set_consistent_dma_mask(pdev, DMA_BIT_MASK(32));
4191 /* both attempts failed: */
4192 if (err) {
4193 printk(KERN_WARNING "%s: No suitable DMA available.\n",
4194 DRV_NAME);
4195 goto out_pci_disable_device;
4196 }
4197 }
4198
4199 err = pci_request_regions(pdev, DRV_NAME);
4200 if (err)
4201 goto out_pci_disable_device;
4202
4203 pci_set_drvdata(pdev, priv);
4204
4205
4206 /***********************
4207 * 3. Read REV register
4208 ***********************/
4209 priv->hw_base = pci_iomap(pdev, 0, 0);
4210 if (!priv->hw_base) {
4211 err = -ENODEV;
4212 goto out_pci_release_regions;
4213 }
4214
4215 IWL_DEBUG_INFO("pci_resource_len = 0x%08llx\n",
4216 (unsigned long long) pci_resource_len(pdev, 0));
4217 IWL_DEBUG_INFO("pci_resource_base = %p\n", priv->hw_base);
4218
4219 iwl_hw_detect(priv);
4220 printk(KERN_INFO DRV_NAME
4221 ": Detected Intel Wireless WiFi Link %s REV=0x%X\n",
4222 priv->cfg->name, priv->hw_rev);
4223
4224 /* We disable the RETRY_TIMEOUT register (0x41) to keep
4225 * PCI Tx retries from interfering with C3 CPU state */
4226 pci_write_config_byte(pdev, PCI_CFG_RETRY_TIMEOUT, 0x00);
4227
4228 /* amp init */
4229 err = priv->cfg->ops->lib->apm_ops.init(priv);
4230 if (err < 0) {
4231 IWL_DEBUG_INFO("Failed to init APMG\n");
4232 goto out_iounmap;
4233 }
4234 /*****************
4235 * 4. Read EEPROM
4236 *****************/
4237 /* Read the EEPROM */
4238 err = iwl_eeprom_init(priv);
4239 if (err) {
4240 IWL_ERROR("Unable to init EEPROM\n");
4241 goto out_iounmap;
4242 }
4243 err = iwl_eeprom_check_version(priv);
4244 if (err)
4245 goto out_iounmap;
4246
4247 /* extract MAC Address */
4248 iwl_eeprom_get_mac(priv, priv->mac_addr);
4249 IWL_DEBUG_INFO("MAC address: %pM\n", priv->mac_addr);
4250 SET_IEEE80211_PERM_ADDR(priv->hw, priv->mac_addr);
4251
4252 /************************
4253 * 5. Setup HW constants
4254 ************************/
4255 if (iwl_set_hw_params(priv)) {
4256 IWL_ERROR("failed to set hw parameters\n");
4257 goto out_free_eeprom;
4258 }
4259
4260 /*******************
4261 * 6. Setup priv
4262 *******************/
4263
4264 err = iwl_init_drv(priv);
4265 if (err)
4266 goto out_free_eeprom;
4267 /* At this point both hw and priv are initialized. */
4268
4269 /**********************************
4270 * 7. Initialize module parameters
4271 **********************************/
4272
4273 /* Disable radio (SW RF KILL) via parameter when loading driver */
4274 if (priv->cfg->mod_params->disable) {
4275 set_bit(STATUS_RF_KILL_SW, &priv->status);
4276 IWL_DEBUG_INFO("Radio disabled.\n");
4277 }
4278
4279 /********************
4280 * 8. Setup services
4281 ********************/
4282 spin_lock_irqsave(&priv->lock, flags);
4283 iwl_disable_interrupts(priv);
4284 spin_unlock_irqrestore(&priv->lock, flags);
4285
4286 err = sysfs_create_group(&pdev->dev.kobj, &iwl_attribute_group);
4287 if (err) {
4288 IWL_ERROR("failed to create sysfs device attributes\n");
4289 goto out_uninit_drv;
4290 }
4291
4292
4293 iwl_setup_deferred_work(priv);
4294 iwl_setup_rx_handlers(priv);
4295
4296 /********************
4297 * 9. Conclude
4298 ********************/
4299 pci_save_state(pdev);
4300 pci_disable_device(pdev);
4301
4302 /**********************************
4303 * 10. Setup and register mac80211
4304 **********************************/
4305
4306 err = iwl_setup_mac(priv);
4307 if (err)
4308 goto out_remove_sysfs;
4309
4310 err = iwl_dbgfs_register(priv, DRV_NAME);
4311 if (err)
4312 IWL_ERROR("failed to create debugfs files\n");
4313
4314 err = iwl_rfkill_init(priv);
4315 if (err)
4316 IWL_ERROR("Unable to initialize RFKILL system. "
4317 "Ignoring error: %d\n", err);
4318 iwl_power_initialize(priv);
4319 return 0;
4320
4321 out_remove_sysfs:
4322 sysfs_remove_group(&pdev->dev.kobj, &iwl_attribute_group);
4323 out_uninit_drv:
4324 iwl_uninit_drv(priv);
4325 out_free_eeprom:
4326 iwl_eeprom_free(priv);
4327 out_iounmap:
4328 pci_iounmap(pdev, priv->hw_base);
4329 out_pci_release_regions:
4330 pci_release_regions(pdev);
4331 pci_set_drvdata(pdev, NULL);
4332 out_pci_disable_device:
4333 pci_disable_device(pdev);
4334 out_ieee80211_free_hw:
4335 ieee80211_free_hw(priv->hw);
4336 out:
4337 return err;
4338 }
4339
4340 static void __devexit iwl_pci_remove(struct pci_dev *pdev)
4341 {
4342 struct iwl_priv *priv = pci_get_drvdata(pdev);
4343 unsigned long flags;
4344
4345 if (!priv)
4346 return;
4347
4348 IWL_DEBUG_INFO("*** UNLOAD DRIVER ***\n");
4349
4350 iwl_dbgfs_unregister(priv);
4351 sysfs_remove_group(&pdev->dev.kobj, &iwl_attribute_group);
4352
4353 /* ieee80211_unregister_hw call wil cause iwl_mac_stop to
4354 * to be called and iwl_down since we are removing the device
4355 * we need to set STATUS_EXIT_PENDING bit.
4356 */
4357 set_bit(STATUS_EXIT_PENDING, &priv->status);
4358 if (priv->mac80211_registered) {
4359 ieee80211_unregister_hw(priv->hw);
4360 priv->mac80211_registered = 0;
4361 } else {
4362 iwl_down(priv);
4363 }
4364
4365 /* make sure we flush any pending irq or
4366 * tasklet for the driver
4367 */
4368 spin_lock_irqsave(&priv->lock, flags);
4369 iwl_disable_interrupts(priv);
4370 spin_unlock_irqrestore(&priv->lock, flags);
4371
4372 iwl_synchronize_irq(priv);
4373
4374 iwl_rfkill_unregister(priv);
4375 iwl_dealloc_ucode_pci(priv);
4376
4377 if (priv->rxq.bd)
4378 iwl_rx_queue_free(priv, &priv->rxq);
4379 iwl_hw_txq_ctx_free(priv);
4380
4381 iwl_clear_stations_table(priv);
4382 iwl_eeprom_free(priv);
4383
4384
4385 /*netif_stop_queue(dev); */
4386 flush_workqueue(priv->workqueue);
4387
4388 /* ieee80211_unregister_hw calls iwl_mac_stop, which flushes
4389 * priv->workqueue... so we can't take down the workqueue
4390 * until now... */
4391 destroy_workqueue(priv->workqueue);
4392 priv->workqueue = NULL;
4393
4394 pci_iounmap(pdev, priv->hw_base);
4395 pci_release_regions(pdev);
4396 pci_disable_device(pdev);
4397 pci_set_drvdata(pdev, NULL);
4398
4399 iwl_uninit_drv(priv);
4400
4401 if (priv->ibss_beacon)
4402 dev_kfree_skb(priv->ibss_beacon);
4403
4404 ieee80211_free_hw(priv->hw);
4405 }
4406
4407 #ifdef CONFIG_PM
4408
4409 static int iwl_pci_suspend(struct pci_dev *pdev, pm_message_t state)
4410 {
4411 struct iwl_priv *priv = pci_get_drvdata(pdev);
4412
4413 if (priv->is_open) {
4414 set_bit(STATUS_IN_SUSPEND, &priv->status);
4415 iwl_mac_stop(priv->hw);
4416 priv->is_open = 1;
4417 }
4418
4419 pci_set_power_state(pdev, PCI_D3hot);
4420
4421 return 0;
4422 }
4423
4424 static int iwl_pci_resume(struct pci_dev *pdev)
4425 {
4426 struct iwl_priv *priv = pci_get_drvdata(pdev);
4427
4428 pci_set_power_state(pdev, PCI_D0);
4429
4430 if (priv->is_open)
4431 iwl_mac_start(priv->hw);
4432
4433 clear_bit(STATUS_IN_SUSPEND, &priv->status);
4434 return 0;
4435 }
4436
4437 #endif /* CONFIG_PM */
4438
4439 /*****************************************************************************
4440 *
4441 * driver and module entry point
4442 *
4443 *****************************************************************************/
4444
4445 /* Hardware specific file defines the PCI IDs table for that hardware module */
4446 static struct pci_device_id iwl_hw_card_ids[] = {
4447 #ifdef CONFIG_IWL4965
4448 {IWL_PCI_DEVICE(0x4229, PCI_ANY_ID, iwl4965_agn_cfg)},
4449 {IWL_PCI_DEVICE(0x4230, PCI_ANY_ID, iwl4965_agn_cfg)},
4450 #endif /* CONFIG_IWL4965 */
4451 #ifdef CONFIG_IWL5000
4452 {IWL_PCI_DEVICE(0x4232, 0x1205, iwl5100_bg_cfg)},
4453 {IWL_PCI_DEVICE(0x4232, 0x1305, iwl5100_bg_cfg)},
4454 {IWL_PCI_DEVICE(0x4232, 0x1206, iwl5100_abg_cfg)},
4455 {IWL_PCI_DEVICE(0x4232, 0x1306, iwl5100_abg_cfg)},
4456 {IWL_PCI_DEVICE(0x4232, 0x1326, iwl5100_abg_cfg)},
4457 {IWL_PCI_DEVICE(0x4237, 0x1216, iwl5100_abg_cfg)},
4458 {IWL_PCI_DEVICE(0x4232, PCI_ANY_ID, iwl5100_agn_cfg)},
4459 {IWL_PCI_DEVICE(0x4235, PCI_ANY_ID, iwl5300_agn_cfg)},
4460 {IWL_PCI_DEVICE(0x4236, PCI_ANY_ID, iwl5300_agn_cfg)},
4461 {IWL_PCI_DEVICE(0x4237, PCI_ANY_ID, iwl5100_agn_cfg)},
4462 /* 5350 WiFi/WiMax */
4463 {IWL_PCI_DEVICE(0x423A, 0x1001, iwl5350_agn_cfg)},
4464 {IWL_PCI_DEVICE(0x423A, 0x1021, iwl5350_agn_cfg)},
4465 {IWL_PCI_DEVICE(0x423B, 0x1011, iwl5350_agn_cfg)},
4466 #endif /* CONFIG_IWL5000 */
4467 {0}
4468 };
4469 MODULE_DEVICE_TABLE(pci, iwl_hw_card_ids);
4470
4471 static struct pci_driver iwl_driver = {
4472 .name = DRV_NAME,
4473 .id_table = iwl_hw_card_ids,
4474 .probe = iwl_pci_probe,
4475 .remove = __devexit_p(iwl_pci_remove),
4476 #ifdef CONFIG_PM
4477 .suspend = iwl_pci_suspend,
4478 .resume = iwl_pci_resume,
4479 #endif
4480 };
4481
4482 static int __init iwl_init(void)
4483 {
4484
4485 int ret;
4486 printk(KERN_INFO DRV_NAME ": " DRV_DESCRIPTION ", " DRV_VERSION "\n");
4487 printk(KERN_INFO DRV_NAME ": " DRV_COPYRIGHT "\n");
4488
4489 ret = iwlagn_rate_control_register();
4490 if (ret) {
4491 IWL_ERROR("Unable to register rate control algorithm: %d\n", ret);
4492 return ret;
4493 }
4494
4495 ret = pci_register_driver(&iwl_driver);
4496 if (ret) {
4497 IWL_ERROR("Unable to initialize PCI module\n");
4498 goto error_register;
4499 }
4500
4501 return ret;
4502
4503 error_register:
4504 iwlagn_rate_control_unregister();
4505 return ret;
4506 }
4507
4508 static void __exit iwl_exit(void)
4509 {
4510 pci_unregister_driver(&iwl_driver);
4511 iwlagn_rate_control_unregister();
4512 }
4513
4514 module_exit(iwl_exit);
4515 module_init(iwl_init);
Linux 2.6 ibm-acpi/thinkpad-acpi driver git tree