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Merge branch 'master' of git://git.kernel.org/pub/scm/linux/kernel/git/kaber/nf-next-2.6
[deliverable/linux.git] / drivers / net / wireless / iwlwifi / iwl-agn.c
1 /******************************************************************************
2 *
3 * Copyright(c) 2003 - 2008 Intel Corporation. All rights reserved.
4 *
5 * Portions of this file are derived from the ipw3945 project, as well
6 * as portions of the ieee80211 subsystem header files.
7 *
8 * This program is free software; you can redistribute it and/or modify it
9 * under the terms of version 2 of the GNU General Public License as
10 * published by the Free Software Foundation.
11 *
12 * This program is distributed in the hope that it will be useful, but WITHOUT
13 * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
14 * FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License for
15 * more details.
16 *
17 * You should have received a copy of the GNU General Public License along with
18 * this program; if not, write to the Free Software Foundation, Inc.,
19 * 51 Franklin Street, Fifth Floor, Boston, MA 02110, USA
20 *
21 * The full GNU General Public License is included in this distribution in the
22 * file called LICENSE.
23 *
24 * Contact Information:
25 * James P. Ketrenos <ipw2100-admin@linux.intel.com>
26 * Intel Corporation, 5200 N.E. Elam Young Parkway, Hillsboro, OR 97124-6497
27 *
28 *****************************************************************************/
29
30 #include <linux/kernel.h>
31 #include <linux/module.h>
32 #include <linux/init.h>
33 #include <linux/pci.h>
34 #include <linux/dma-mapping.h>
35 #include <linux/delay.h>
36 #include <linux/skbuff.h>
37 #include <linux/netdevice.h>
38 #include <linux/wireless.h>
39 #include <linux/firmware.h>
40 #include <linux/etherdevice.h>
41 #include <linux/if_arp.h>
42
43 #include <net/mac80211.h>
44
45 #include <asm/div64.h>
46
47 #include "iwl-eeprom.h"
48 #include "iwl-dev.h"
49 #include "iwl-core.h"
50 #include "iwl-io.h"
51 #include "iwl-helpers.h"
52 #include "iwl-sta.h"
53 #include "iwl-calib.h"
54
55
56 /******************************************************************************
57 *
58 * module boiler plate
59 *
60 ******************************************************************************/
61
62 /*
63 * module name, copyright, version, etc.
64 * NOTE: DRV_NAME is defined in iwlwifi.h for use by iwl-debug.h and printk
65 */
66
67 #define DRV_DESCRIPTION "Intel(R) Wireless WiFi Link AGN driver for Linux"
68
69 #ifdef CONFIG_IWLWIFI_DEBUG
70 #define VD "d"
71 #else
72 #define VD
73 #endif
74
75 #ifdef CONFIG_IWLAGN_SPECTRUM_MEASUREMENT
76 #define VS "s"
77 #else
78 #define VS
79 #endif
80
81 #define DRV_VERSION IWLWIFI_VERSION VD VS
82
83
84 MODULE_DESCRIPTION(DRV_DESCRIPTION);
85 MODULE_VERSION(DRV_VERSION);
86 MODULE_AUTHOR(DRV_COPYRIGHT);
87 MODULE_LICENSE("GPL");
88 MODULE_ALIAS("iwl4965");
89
90 /*************** STATION TABLE MANAGEMENT ****
91 * mac80211 should be examined to determine if sta_info is duplicating
92 * the functionality provided here
93 */
94
95 /**************************************************************/
96
97
98
99 static void 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 & IWL_CCK_RATES_MASK;
470 else
471 rate_mask = priv->active_rate_basic & IWL_OFDM_RATES_MASK;
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
875 /******************************************************************************
876 *
877 * Generic RX handler implementations
878 *
879 ******************************************************************************/
880 static void iwl_rx_reply_alive(struct iwl_priv *priv,
881 struct iwl_rx_mem_buffer *rxb)
882 {
883 struct iwl_rx_packet *pkt = (struct iwl_rx_packet *)rxb->skb->data;
884 struct iwl_alive_resp *palive;
885 struct delayed_work *pwork;
886
887 palive = &pkt->u.alive_frame;
888
889 IWL_DEBUG_INFO("Alive ucode status 0x%08X revision "
890 "0x%01X 0x%01X\n",
891 palive->is_valid, palive->ver_type,
892 palive->ver_subtype);
893
894 if (palive->ver_subtype == INITIALIZE_SUBTYPE) {
895 IWL_DEBUG_INFO("Initialization Alive received.\n");
896 memcpy(&priv->card_alive_init,
897 &pkt->u.alive_frame,
898 sizeof(struct iwl_init_alive_resp));
899 pwork = &priv->init_alive_start;
900 } else {
901 IWL_DEBUG_INFO("Runtime Alive received.\n");
902 memcpy(&priv->card_alive, &pkt->u.alive_frame,
903 sizeof(struct iwl_alive_resp));
904 pwork = &priv->alive_start;
905 }
906
907 /* We delay the ALIVE response by 5ms to
908 * give the HW RF Kill time to activate... */
909 if (palive->is_valid == UCODE_VALID_OK)
910 queue_delayed_work(priv->workqueue, pwork,
911 msecs_to_jiffies(5));
912 else
913 IWL_WARNING("uCode did not respond OK.\n");
914 }
915
916 static void iwl_rx_reply_error(struct iwl_priv *priv,
917 struct iwl_rx_mem_buffer *rxb)
918 {
919 struct iwl_rx_packet *pkt = (struct iwl_rx_packet *)rxb->skb->data;
920
921 IWL_ERROR("Error Reply type 0x%08X cmd %s (0x%02X) "
922 "seq 0x%04X ser 0x%08X\n",
923 le32_to_cpu(pkt->u.err_resp.error_type),
924 get_cmd_string(pkt->u.err_resp.cmd_id),
925 pkt->u.err_resp.cmd_id,
926 le16_to_cpu(pkt->u.err_resp.bad_cmd_seq_num),
927 le32_to_cpu(pkt->u.err_resp.error_info));
928 }
929
930 #define TX_STATUS_ENTRY(x) case TX_STATUS_FAIL_ ## x: return #x
931
932 static void iwl_rx_csa(struct iwl_priv *priv, struct iwl_rx_mem_buffer *rxb)
933 {
934 struct iwl_rx_packet *pkt = (struct iwl_rx_packet *)rxb->skb->data;
935 struct iwl_rxon_cmd *rxon = (void *)&priv->active_rxon;
936 struct iwl4965_csa_notification *csa = &(pkt->u.csa_notif);
937 IWL_DEBUG_11H("CSA notif: channel %d, status %d\n",
938 le16_to_cpu(csa->channel), le32_to_cpu(csa->status));
939 rxon->channel = csa->channel;
940 priv->staging_rxon.channel = csa->channel;
941 }
942
943 static void iwl_rx_pm_sleep_notif(struct iwl_priv *priv,
944 struct iwl_rx_mem_buffer *rxb)
945 {
946 #ifdef CONFIG_IWLWIFI_DEBUG
947 struct iwl_rx_packet *pkt = (struct iwl_rx_packet *)rxb->skb->data;
948 struct iwl4965_sleep_notification *sleep = &(pkt->u.sleep_notif);
949 IWL_DEBUG_RX("sleep mode: %d, src: %d\n",
950 sleep->pm_sleep_mode, sleep->pm_wakeup_src);
951 #endif
952 }
953
954 static void iwl_rx_pm_debug_statistics_notif(struct iwl_priv *priv,
955 struct iwl_rx_mem_buffer *rxb)
956 {
957 struct iwl_rx_packet *pkt = (struct iwl_rx_packet *)rxb->skb->data;
958 IWL_DEBUG_RADIO("Dumping %d bytes of unhandled "
959 "notification for %s:\n",
960 le32_to_cpu(pkt->len), get_cmd_string(pkt->hdr.cmd));
961 iwl_print_hex_dump(priv, IWL_DL_RADIO, pkt->u.raw, le32_to_cpu(pkt->len));
962 }
963
964 static void iwl_bg_beacon_update(struct work_struct *work)
965 {
966 struct iwl_priv *priv =
967 container_of(work, struct iwl_priv, beacon_update);
968 struct sk_buff *beacon;
969
970 /* Pull updated AP beacon from mac80211. will fail if not in AP mode */
971 beacon = ieee80211_beacon_get(priv->hw, priv->vif);
972
973 if (!beacon) {
974 IWL_ERROR("update beacon failed\n");
975 return;
976 }
977
978 mutex_lock(&priv->mutex);
979 /* new beacon skb is allocated every time; dispose previous.*/
980 if (priv->ibss_beacon)
981 dev_kfree_skb(priv->ibss_beacon);
982
983 priv->ibss_beacon = beacon;
984 mutex_unlock(&priv->mutex);
985
986 iwl_send_beacon_cmd(priv);
987 }
988
989 /**
990 * iwl_bg_statistics_periodic - Timer callback to queue statistics
991 *
992 * This callback is provided in order to send a statistics request.
993 *
994 * This timer function is continually reset to execute within
995 * REG_RECALIB_PERIOD seconds since the last STATISTICS_NOTIFICATION
996 * was received. We need to ensure we receive the statistics in order
997 * to update the temperature used for calibrating the TXPOWER.
998 */
999 static void iwl_bg_statistics_periodic(unsigned long data)
1000 {
1001 struct iwl_priv *priv = (struct iwl_priv *)data;
1002
1003 if (test_bit(STATUS_EXIT_PENDING, &priv->status))
1004 return;
1005
1006 /* dont send host command if rf-kill is on */
1007 if (!iwl_is_ready_rf(priv))
1008 return;
1009
1010 iwl_send_statistics_request(priv, CMD_ASYNC);
1011 }
1012
1013 static void iwl_rx_beacon_notif(struct iwl_priv *priv,
1014 struct iwl_rx_mem_buffer *rxb)
1015 {
1016 #ifdef CONFIG_IWLWIFI_DEBUG
1017 struct iwl_rx_packet *pkt = (struct iwl_rx_packet *)rxb->skb->data;
1018 struct iwl4965_beacon_notif *beacon = &(pkt->u.beacon_status);
1019 u8 rate = iwl_hw_get_rate(beacon->beacon_notify_hdr.rate_n_flags);
1020
1021 IWL_DEBUG_RX("beacon status %x retries %d iss %d "
1022 "tsf %d %d rate %d\n",
1023 le32_to_cpu(beacon->beacon_notify_hdr.u.status) & TX_STATUS_MSK,
1024 beacon->beacon_notify_hdr.failure_frame,
1025 le32_to_cpu(beacon->ibss_mgr_status),
1026 le32_to_cpu(beacon->high_tsf),
1027 le32_to_cpu(beacon->low_tsf), rate);
1028 #endif
1029
1030 if ((priv->iw_mode == NL80211_IFTYPE_AP) &&
1031 (!test_bit(STATUS_EXIT_PENDING, &priv->status)))
1032 queue_work(priv->workqueue, &priv->beacon_update);
1033 }
1034
1035 /* Handle notification from uCode that card's power state is changing
1036 * due to software, hardware, or critical temperature RFKILL */
1037 static void iwl_rx_card_state_notif(struct iwl_priv *priv,
1038 struct iwl_rx_mem_buffer *rxb)
1039 {
1040 struct iwl_rx_packet *pkt = (struct iwl_rx_packet *)rxb->skb->data;
1041 u32 flags = le32_to_cpu(pkt->u.card_state_notif.flags);
1042 unsigned long status = priv->status;
1043
1044 IWL_DEBUG_RF_KILL("Card state received: HW:%s SW:%s\n",
1045 (flags & HW_CARD_DISABLED) ? "Kill" : "On",
1046 (flags & SW_CARD_DISABLED) ? "Kill" : "On");
1047
1048 if (flags & (SW_CARD_DISABLED | HW_CARD_DISABLED |
1049 RF_CARD_DISABLED)) {
1050
1051 iwl_write32(priv, CSR_UCODE_DRV_GP1_SET,
1052 CSR_UCODE_DRV_GP1_BIT_CMD_BLOCKED);
1053
1054 if (!iwl_grab_nic_access(priv)) {
1055 iwl_write_direct32(
1056 priv, HBUS_TARG_MBX_C,
1057 HBUS_TARG_MBX_C_REG_BIT_CMD_BLOCKED);
1058
1059 iwl_release_nic_access(priv);
1060 }
1061
1062 if (!(flags & RXON_CARD_DISABLED)) {
1063 iwl_write32(priv, CSR_UCODE_DRV_GP1_CLR,
1064 CSR_UCODE_DRV_GP1_BIT_CMD_BLOCKED);
1065 if (!iwl_grab_nic_access(priv)) {
1066 iwl_write_direct32(
1067 priv, HBUS_TARG_MBX_C,
1068 HBUS_TARG_MBX_C_REG_BIT_CMD_BLOCKED);
1069
1070 iwl_release_nic_access(priv);
1071 }
1072 }
1073
1074 if (flags & RF_CARD_DISABLED) {
1075 iwl_write32(priv, CSR_UCODE_DRV_GP1_SET,
1076 CSR_UCODE_DRV_GP1_REG_BIT_CT_KILL_EXIT);
1077 iwl_read32(priv, CSR_UCODE_DRV_GP1);
1078 if (!iwl_grab_nic_access(priv))
1079 iwl_release_nic_access(priv);
1080 }
1081 }
1082
1083 if (flags & HW_CARD_DISABLED)
1084 set_bit(STATUS_RF_KILL_HW, &priv->status);
1085 else
1086 clear_bit(STATUS_RF_KILL_HW, &priv->status);
1087
1088
1089 if (flags & SW_CARD_DISABLED)
1090 set_bit(STATUS_RF_KILL_SW, &priv->status);
1091 else
1092 clear_bit(STATUS_RF_KILL_SW, &priv->status);
1093
1094 if (!(flags & RXON_CARD_DISABLED))
1095 iwl_scan_cancel(priv);
1096
1097 if ((test_bit(STATUS_RF_KILL_HW, &status) !=
1098 test_bit(STATUS_RF_KILL_HW, &priv->status)) ||
1099 (test_bit(STATUS_RF_KILL_SW, &status) !=
1100 test_bit(STATUS_RF_KILL_SW, &priv->status)))
1101 queue_work(priv->workqueue, &priv->rf_kill);
1102 else
1103 wake_up_interruptible(&priv->wait_command_queue);
1104 }
1105
1106 int iwl_set_pwr_src(struct iwl_priv *priv, enum iwl_pwr_src src)
1107 {
1108 int ret;
1109 unsigned long flags;
1110
1111 spin_lock_irqsave(&priv->lock, flags);
1112 ret = iwl_grab_nic_access(priv);
1113 if (ret)
1114 goto err;
1115
1116 if (src == IWL_PWR_SRC_VAUX) {
1117 u32 val;
1118 ret = pci_read_config_dword(priv->pci_dev, PCI_CFG_POWER_SOURCE,
1119 &val);
1120
1121 if (val & PCI_CFG_PMC_PME_FROM_D3COLD_SUPPORT)
1122 iwl_set_bits_mask_prph(priv, APMG_PS_CTRL_REG,
1123 APMG_PS_CTRL_VAL_PWR_SRC_VAUX,
1124 ~APMG_PS_CTRL_MSK_PWR_SRC);
1125 } else {
1126 iwl_set_bits_mask_prph(priv, APMG_PS_CTRL_REG,
1127 APMG_PS_CTRL_VAL_PWR_SRC_VMAIN,
1128 ~APMG_PS_CTRL_MSK_PWR_SRC);
1129 }
1130
1131 iwl_release_nic_access(priv);
1132 err:
1133 spin_unlock_irqrestore(&priv->lock, flags);
1134 return ret;
1135 }
1136
1137 /**
1138 * iwl_setup_rx_handlers - Initialize Rx handler callbacks
1139 *
1140 * Setup the RX handlers for each of the reply types sent from the uCode
1141 * to the host.
1142 *
1143 * This function chains into the hardware specific files for them to setup
1144 * any hardware specific handlers as well.
1145 */
1146 static void iwl_setup_rx_handlers(struct iwl_priv *priv)
1147 {
1148 priv->rx_handlers[REPLY_ALIVE] = iwl_rx_reply_alive;
1149 priv->rx_handlers[REPLY_ERROR] = iwl_rx_reply_error;
1150 priv->rx_handlers[CHANNEL_SWITCH_NOTIFICATION] = iwl_rx_csa;
1151 priv->rx_handlers[PM_SLEEP_NOTIFICATION] = iwl_rx_pm_sleep_notif;
1152 priv->rx_handlers[PM_DEBUG_STATISTIC_NOTIFIC] =
1153 iwl_rx_pm_debug_statistics_notif;
1154 priv->rx_handlers[BEACON_NOTIFICATION] = iwl_rx_beacon_notif;
1155
1156 /*
1157 * The same handler is used for both the REPLY to a discrete
1158 * statistics request from the host as well as for the periodic
1159 * statistics notifications (after received beacons) from the uCode.
1160 */
1161 priv->rx_handlers[REPLY_STATISTICS_CMD] = iwl_rx_statistics;
1162 priv->rx_handlers[STATISTICS_NOTIFICATION] = iwl_rx_statistics;
1163
1164 iwl_setup_spectrum_handlers(priv);
1165 iwl_setup_rx_scan_handlers(priv);
1166
1167 /* status change handler */
1168 priv->rx_handlers[CARD_STATE_NOTIFICATION] = iwl_rx_card_state_notif;
1169
1170 priv->rx_handlers[MISSED_BEACONS_NOTIFICATION] =
1171 iwl_rx_missed_beacon_notif;
1172 /* Rx handlers */
1173 priv->rx_handlers[REPLY_RX_PHY_CMD] = iwl_rx_reply_rx_phy;
1174 priv->rx_handlers[REPLY_RX_MPDU_CMD] = iwl_rx_reply_rx;
1175 /* block ack */
1176 priv->rx_handlers[REPLY_COMPRESSED_BA] = iwl_rx_reply_compressed_ba;
1177 /* Set up hardware specific Rx handlers */
1178 priv->cfg->ops->lib->rx_handler_setup(priv);
1179 }
1180
1181 /*
1182 * this should be called while priv->lock is locked
1183 */
1184 static void __iwl_rx_replenish(struct iwl_priv *priv)
1185 {
1186 iwl_rx_allocate(priv);
1187 iwl_rx_queue_restock(priv);
1188 }
1189
1190
1191 /**
1192 * iwl_rx_handle - Main entry function for receiving responses from uCode
1193 *
1194 * Uses the priv->rx_handlers callback function array to invoke
1195 * the appropriate handlers, including command responses,
1196 * frame-received notifications, and other notifications.
1197 */
1198 void iwl_rx_handle(struct iwl_priv *priv)
1199 {
1200 struct iwl_rx_mem_buffer *rxb;
1201 struct iwl_rx_packet *pkt;
1202 struct iwl_rx_queue *rxq = &priv->rxq;
1203 u32 r, i;
1204 int reclaim;
1205 unsigned long flags;
1206 u8 fill_rx = 0;
1207 u32 count = 8;
1208
1209 /* uCode's read index (stored in shared DRAM) indicates the last Rx
1210 * buffer that the driver may process (last buffer filled by ucode). */
1211 r = le16_to_cpu(rxq->rb_stts->closed_rb_num) & 0x0FFF;
1212 i = rxq->read;
1213
1214 /* Rx interrupt, but nothing sent from uCode */
1215 if (i == r)
1216 IWL_DEBUG(IWL_DL_RX, "r = %d, i = %d\n", r, i);
1217
1218 if (iwl_rx_queue_space(rxq) > (RX_QUEUE_SIZE / 2))
1219 fill_rx = 1;
1220
1221 while (i != r) {
1222 rxb = rxq->queue[i];
1223
1224 /* If an RXB doesn't have a Rx queue slot associated with it,
1225 * then a bug has been introduced in the queue refilling
1226 * routines -- catch it here */
1227 BUG_ON(rxb == NULL);
1228
1229 rxq->queue[i] = NULL;
1230
1231 dma_sync_single_range_for_cpu(
1232 &priv->pci_dev->dev, rxb->real_dma_addr,
1233 rxb->aligned_dma_addr - rxb->real_dma_addr,
1234 priv->hw_params.rx_buf_size,
1235 PCI_DMA_FROMDEVICE);
1236 pkt = (struct iwl_rx_packet *)rxb->skb->data;
1237
1238 /* Reclaim a command buffer only if this packet is a response
1239 * to a (driver-originated) command.
1240 * If the packet (e.g. Rx frame) originated from uCode,
1241 * there is no command buffer to reclaim.
1242 * Ucode should set SEQ_RX_FRAME bit if ucode-originated,
1243 * but apparently a few don't get set; catch them here. */
1244 reclaim = !(pkt->hdr.sequence & SEQ_RX_FRAME) &&
1245 (pkt->hdr.cmd != REPLY_RX_PHY_CMD) &&
1246 (pkt->hdr.cmd != REPLY_RX) &&
1247 (pkt->hdr.cmd != REPLY_RX_MPDU_CMD) &&
1248 (pkt->hdr.cmd != REPLY_COMPRESSED_BA) &&
1249 (pkt->hdr.cmd != STATISTICS_NOTIFICATION) &&
1250 (pkt->hdr.cmd != REPLY_TX);
1251
1252 /* Based on type of command response or notification,
1253 * handle those that need handling via function in
1254 * rx_handlers table. See iwl_setup_rx_handlers() */
1255 if (priv->rx_handlers[pkt->hdr.cmd]) {
1256 IWL_DEBUG(IWL_DL_RX, "r = %d, i = %d, %s, 0x%02x\n", r,
1257 i, get_cmd_string(pkt->hdr.cmd), pkt->hdr.cmd);
1258 priv->rx_handlers[pkt->hdr.cmd] (priv, rxb);
1259 } else {
1260 /* No handling needed */
1261 IWL_DEBUG(IWL_DL_RX,
1262 "r %d i %d No handler needed for %s, 0x%02x\n",
1263 r, i, get_cmd_string(pkt->hdr.cmd),
1264 pkt->hdr.cmd);
1265 }
1266
1267 if (reclaim) {
1268 /* Invoke any callbacks, transfer the skb to caller, and
1269 * fire off the (possibly) blocking iwl_send_cmd()
1270 * as we reclaim the driver command queue */
1271 if (rxb && rxb->skb)
1272 iwl_tx_cmd_complete(priv, rxb);
1273 else
1274 IWL_WARNING("Claim null rxb?\n");
1275 }
1276
1277 /* For now we just don't re-use anything. We can tweak this
1278 * later to try and re-use notification packets and SKBs that
1279 * fail to Rx correctly */
1280 if (rxb->skb != NULL) {
1281 priv->alloc_rxb_skb--;
1282 dev_kfree_skb_any(rxb->skb);
1283 rxb->skb = NULL;
1284 }
1285
1286 pci_unmap_single(priv->pci_dev, rxb->real_dma_addr,
1287 priv->hw_params.rx_buf_size + 256,
1288 PCI_DMA_FROMDEVICE);
1289 spin_lock_irqsave(&rxq->lock, flags);
1290 list_add_tail(&rxb->list, &priv->rxq.rx_used);
1291 spin_unlock_irqrestore(&rxq->lock, flags);
1292 i = (i + 1) & RX_QUEUE_MASK;
1293 /* If there are a lot of unused frames,
1294 * restock the Rx queue so ucode wont assert. */
1295 if (fill_rx) {
1296 count++;
1297 if (count >= 8) {
1298 priv->rxq.read = i;
1299 __iwl_rx_replenish(priv);
1300 count = 0;
1301 }
1302 }
1303 }
1304
1305 /* Backtrack one entry */
1306 priv->rxq.read = i;
1307 iwl_rx_queue_restock(priv);
1308 }
1309
1310 #ifdef CONFIG_IWLWIFI_DEBUG
1311 static void iwl_print_rx_config_cmd(struct iwl_priv *priv)
1312 {
1313 struct iwl_rxon_cmd *rxon = &priv->staging_rxon;
1314
1315 IWL_DEBUG_RADIO("RX CONFIG:\n");
1316 iwl_print_hex_dump(priv, IWL_DL_RADIO, (u8 *) rxon, sizeof(*rxon));
1317 IWL_DEBUG_RADIO("u16 channel: 0x%x\n", le16_to_cpu(rxon->channel));
1318 IWL_DEBUG_RADIO("u32 flags: 0x%08X\n", le32_to_cpu(rxon->flags));
1319 IWL_DEBUG_RADIO("u32 filter_flags: 0x%08x\n",
1320 le32_to_cpu(rxon->filter_flags));
1321 IWL_DEBUG_RADIO("u8 dev_type: 0x%x\n", rxon->dev_type);
1322 IWL_DEBUG_RADIO("u8 ofdm_basic_rates: 0x%02x\n",
1323 rxon->ofdm_basic_rates);
1324 IWL_DEBUG_RADIO("u8 cck_basic_rates: 0x%02x\n", rxon->cck_basic_rates);
1325 IWL_DEBUG_RADIO("u8[6] node_addr: %pM\n", rxon->node_addr);
1326 IWL_DEBUG_RADIO("u8[6] bssid_addr: %pM\n", rxon->bssid_addr);
1327 IWL_DEBUG_RADIO("u16 assoc_id: 0x%x\n", le16_to_cpu(rxon->assoc_id));
1328 }
1329 #endif
1330
1331 static void iwl_enable_interrupts(struct iwl_priv *priv)
1332 {
1333 IWL_DEBUG_ISR("Enabling interrupts\n");
1334 set_bit(STATUS_INT_ENABLED, &priv->status);
1335 iwl_write32(priv, CSR_INT_MASK, CSR_INI_SET_MASK);
1336 }
1337
1338 /* call this function to flush any scheduled tasklet */
1339 static inline void iwl_synchronize_irq(struct iwl_priv *priv)
1340 {
1341 /* wait to make sure we flush pending tasklet*/
1342 synchronize_irq(priv->pci_dev->irq);
1343 tasklet_kill(&priv->irq_tasklet);
1344 }
1345
1346 static inline void iwl_disable_interrupts(struct iwl_priv *priv)
1347 {
1348 clear_bit(STATUS_INT_ENABLED, &priv->status);
1349
1350 /* disable interrupts from uCode/NIC to host */
1351 iwl_write32(priv, CSR_INT_MASK, 0x00000000);
1352
1353 /* acknowledge/clear/reset any interrupts still pending
1354 * from uCode or flow handler (Rx/Tx DMA) */
1355 iwl_write32(priv, CSR_INT, 0xffffffff);
1356 iwl_write32(priv, CSR_FH_INT_STATUS, 0xffffffff);
1357 IWL_DEBUG_ISR("Disabled interrupts\n");
1358 }
1359
1360
1361 /**
1362 * iwl_irq_handle_error - called for HW or SW error interrupt from card
1363 */
1364 static void iwl_irq_handle_error(struct iwl_priv *priv)
1365 {
1366 /* Set the FW error flag -- cleared on iwl_down */
1367 set_bit(STATUS_FW_ERROR, &priv->status);
1368
1369 /* Cancel currently queued command. */
1370 clear_bit(STATUS_HCMD_ACTIVE, &priv->status);
1371
1372 #ifdef CONFIG_IWLWIFI_DEBUG
1373 if (priv->debug_level & IWL_DL_FW_ERRORS) {
1374 iwl_dump_nic_error_log(priv);
1375 iwl_dump_nic_event_log(priv);
1376 iwl_print_rx_config_cmd(priv);
1377 }
1378 #endif
1379
1380 wake_up_interruptible(&priv->wait_command_queue);
1381
1382 /* Keep the restart process from trying to send host
1383 * commands by clearing the INIT status bit */
1384 clear_bit(STATUS_READY, &priv->status);
1385
1386 if (!test_bit(STATUS_EXIT_PENDING, &priv->status)) {
1387 IWL_DEBUG(IWL_DL_FW_ERRORS,
1388 "Restarting adapter due to uCode error.\n");
1389
1390 if (iwl_is_associated(priv)) {
1391 memcpy(&priv->recovery_rxon, &priv->active_rxon,
1392 sizeof(priv->recovery_rxon));
1393 priv->error_recovering = 1;
1394 }
1395 if (priv->cfg->mod_params->restart_fw)
1396 queue_work(priv->workqueue, &priv->restart);
1397 }
1398 }
1399
1400 static void iwl_error_recovery(struct iwl_priv *priv)
1401 {
1402 unsigned long flags;
1403
1404 memcpy(&priv->staging_rxon, &priv->recovery_rxon,
1405 sizeof(priv->staging_rxon));
1406 priv->staging_rxon.filter_flags &= ~RXON_FILTER_ASSOC_MSK;
1407 iwl_commit_rxon(priv);
1408
1409 iwl_rxon_add_station(priv, priv->bssid, 1);
1410
1411 spin_lock_irqsave(&priv->lock, flags);
1412 priv->assoc_id = le16_to_cpu(priv->staging_rxon.assoc_id);
1413 priv->error_recovering = 0;
1414 spin_unlock_irqrestore(&priv->lock, flags);
1415 }
1416
1417 static void iwl_irq_tasklet(struct iwl_priv *priv)
1418 {
1419 u32 inta, handled = 0;
1420 u32 inta_fh;
1421 unsigned long flags;
1422 #ifdef CONFIG_IWLWIFI_DEBUG
1423 u32 inta_mask;
1424 #endif
1425
1426 spin_lock_irqsave(&priv->lock, flags);
1427
1428 /* Ack/clear/reset pending uCode interrupts.
1429 * Note: Some bits in CSR_INT are "OR" of bits in CSR_FH_INT_STATUS,
1430 * and will clear only when CSR_FH_INT_STATUS gets cleared. */
1431 inta = iwl_read32(priv, CSR_INT);
1432 iwl_write32(priv, CSR_INT, inta);
1433
1434 /* Ack/clear/reset pending flow-handler (DMA) interrupts.
1435 * Any new interrupts that happen after this, either while we're
1436 * in this tasklet, or later, will show up in next ISR/tasklet. */
1437 inta_fh = iwl_read32(priv, CSR_FH_INT_STATUS);
1438 iwl_write32(priv, CSR_FH_INT_STATUS, inta_fh);
1439
1440 #ifdef CONFIG_IWLWIFI_DEBUG
1441 if (priv->debug_level & IWL_DL_ISR) {
1442 /* just for debug */
1443 inta_mask = iwl_read32(priv, CSR_INT_MASK);
1444 IWL_DEBUG_ISR("inta 0x%08x, enabled 0x%08x, fh 0x%08x\n",
1445 inta, inta_mask, inta_fh);
1446 }
1447 #endif
1448
1449 /* Since CSR_INT and CSR_FH_INT_STATUS reads and clears are not
1450 * atomic, make sure that inta covers all the interrupts that
1451 * we've discovered, even if FH interrupt came in just after
1452 * reading CSR_INT. */
1453 if (inta_fh & CSR49_FH_INT_RX_MASK)
1454 inta |= CSR_INT_BIT_FH_RX;
1455 if (inta_fh & CSR49_FH_INT_TX_MASK)
1456 inta |= CSR_INT_BIT_FH_TX;
1457
1458 /* Now service all interrupt bits discovered above. */
1459 if (inta & CSR_INT_BIT_HW_ERR) {
1460 IWL_ERROR("Microcode HW error detected. Restarting.\n");
1461
1462 /* Tell the device to stop sending interrupts */
1463 iwl_disable_interrupts(priv);
1464
1465 iwl_irq_handle_error(priv);
1466
1467 handled |= CSR_INT_BIT_HW_ERR;
1468
1469 spin_unlock_irqrestore(&priv->lock, flags);
1470
1471 return;
1472 }
1473
1474 #ifdef CONFIG_IWLWIFI_DEBUG
1475 if (priv->debug_level & (IWL_DL_ISR)) {
1476 /* NIC fires this, but we don't use it, redundant with WAKEUP */
1477 if (inta & CSR_INT_BIT_SCD)
1478 IWL_DEBUG_ISR("Scheduler finished to transmit "
1479 "the frame/frames.\n");
1480
1481 /* Alive notification via Rx interrupt will do the real work */
1482 if (inta & CSR_INT_BIT_ALIVE)
1483 IWL_DEBUG_ISR("Alive interrupt\n");
1484 }
1485 #endif
1486 /* Safely ignore these bits for debug checks below */
1487 inta &= ~(CSR_INT_BIT_SCD | CSR_INT_BIT_ALIVE);
1488
1489 /* HW RF KILL switch toggled */
1490 if (inta & CSR_INT_BIT_RF_KILL) {
1491 int hw_rf_kill = 0;
1492 if (!(iwl_read32(priv, CSR_GP_CNTRL) &
1493 CSR_GP_CNTRL_REG_FLAG_HW_RF_KILL_SW))
1494 hw_rf_kill = 1;
1495
1496 IWL_DEBUG(IWL_DL_RF_KILL, "RF_KILL bit toggled to %s.\n",
1497 hw_rf_kill ? "disable radio" : "enable radio");
1498
1499 /* driver only loads ucode once setting the interface up.
1500 * the driver as well won't allow loading if RFKILL is set
1501 * therefore no need to restart the driver from this handler
1502 */
1503 if (!hw_rf_kill && !test_bit(STATUS_ALIVE, &priv->status))
1504 clear_bit(STATUS_RF_KILL_HW, &priv->status);
1505
1506 handled |= CSR_INT_BIT_RF_KILL;
1507 }
1508
1509 /* Chip got too hot and stopped itself */
1510 if (inta & CSR_INT_BIT_CT_KILL) {
1511 IWL_ERROR("Microcode CT kill error detected.\n");
1512 handled |= CSR_INT_BIT_CT_KILL;
1513 }
1514
1515 /* Error detected by uCode */
1516 if (inta & CSR_INT_BIT_SW_ERR) {
1517 IWL_ERROR("Microcode SW error detected. Restarting 0x%X.\n",
1518 inta);
1519 iwl_irq_handle_error(priv);
1520 handled |= CSR_INT_BIT_SW_ERR;
1521 }
1522
1523 /* uCode wakes up after power-down sleep */
1524 if (inta & CSR_INT_BIT_WAKEUP) {
1525 IWL_DEBUG_ISR("Wakeup interrupt\n");
1526 iwl_rx_queue_update_write_ptr(priv, &priv->rxq);
1527 iwl_txq_update_write_ptr(priv, &priv->txq[0]);
1528 iwl_txq_update_write_ptr(priv, &priv->txq[1]);
1529 iwl_txq_update_write_ptr(priv, &priv->txq[2]);
1530 iwl_txq_update_write_ptr(priv, &priv->txq[3]);
1531 iwl_txq_update_write_ptr(priv, &priv->txq[4]);
1532 iwl_txq_update_write_ptr(priv, &priv->txq[5]);
1533
1534 handled |= CSR_INT_BIT_WAKEUP;
1535 }
1536
1537 /* All uCode command responses, including Tx command responses,
1538 * Rx "responses" (frame-received notification), and other
1539 * notifications from uCode come through here*/
1540 if (inta & (CSR_INT_BIT_FH_RX | CSR_INT_BIT_SW_RX)) {
1541 iwl_rx_handle(priv);
1542 handled |= (CSR_INT_BIT_FH_RX | CSR_INT_BIT_SW_RX);
1543 }
1544
1545 if (inta & CSR_INT_BIT_FH_TX) {
1546 IWL_DEBUG_ISR("Tx interrupt\n");
1547 handled |= CSR_INT_BIT_FH_TX;
1548 /* FH finished to write, send event */
1549 priv->ucode_write_complete = 1;
1550 wake_up_interruptible(&priv->wait_command_queue);
1551 }
1552
1553 if (inta & ~handled)
1554 IWL_ERROR("Unhandled INTA bits 0x%08x\n", inta & ~handled);
1555
1556 if (inta & ~CSR_INI_SET_MASK) {
1557 IWL_WARNING("Disabled INTA bits 0x%08x were pending\n",
1558 inta & ~CSR_INI_SET_MASK);
1559 IWL_WARNING(" with FH_INT = 0x%08x\n", inta_fh);
1560 }
1561
1562 /* Re-enable all interrupts */
1563 /* only Re-enable if diabled by irq */
1564 if (test_bit(STATUS_INT_ENABLED, &priv->status))
1565 iwl_enable_interrupts(priv);
1566
1567 #ifdef CONFIG_IWLWIFI_DEBUG
1568 if (priv->debug_level & (IWL_DL_ISR)) {
1569 inta = iwl_read32(priv, CSR_INT);
1570 inta_mask = iwl_read32(priv, CSR_INT_MASK);
1571 inta_fh = iwl_read32(priv, CSR_FH_INT_STATUS);
1572 IWL_DEBUG_ISR("End inta 0x%08x, enabled 0x%08x, fh 0x%08x, "
1573 "flags 0x%08lx\n", inta, inta_mask, inta_fh, flags);
1574 }
1575 #endif
1576 spin_unlock_irqrestore(&priv->lock, flags);
1577 }
1578
1579 static irqreturn_t iwl_isr(int irq, void *data)
1580 {
1581 struct iwl_priv *priv = data;
1582 u32 inta, inta_mask;
1583 u32 inta_fh;
1584 if (!priv)
1585 return IRQ_NONE;
1586
1587 spin_lock(&priv->lock);
1588
1589 /* Disable (but don't clear!) interrupts here to avoid
1590 * back-to-back ISRs and sporadic interrupts from our NIC.
1591 * If we have something to service, the tasklet will re-enable ints.
1592 * If we *don't* have something, we'll re-enable before leaving here. */
1593 inta_mask = iwl_read32(priv, CSR_INT_MASK); /* just for debug */
1594 iwl_write32(priv, CSR_INT_MASK, 0x00000000);
1595
1596 /* Discover which interrupts are active/pending */
1597 inta = iwl_read32(priv, CSR_INT);
1598 inta_fh = iwl_read32(priv, CSR_FH_INT_STATUS);
1599
1600 /* Ignore interrupt if there's nothing in NIC to service.
1601 * This may be due to IRQ shared with another device,
1602 * or due to sporadic interrupts thrown from our NIC. */
1603 if (!inta && !inta_fh) {
1604 IWL_DEBUG_ISR("Ignore interrupt, inta == 0, inta_fh == 0\n");
1605 goto none;
1606 }
1607
1608 if ((inta == 0xFFFFFFFF) || ((inta & 0xFFFFFFF0) == 0xa5a5a5a0)) {
1609 /* Hardware disappeared. It might have already raised
1610 * an interrupt */
1611 IWL_WARNING("HARDWARE GONE?? INTA == 0x%080x\n", inta);
1612 goto unplugged;
1613 }
1614
1615 IWL_DEBUG_ISR("ISR inta 0x%08x, enabled 0x%08x, fh 0x%08x\n",
1616 inta, inta_mask, inta_fh);
1617
1618 inta &= ~CSR_INT_BIT_SCD;
1619
1620 /* iwl_irq_tasklet() will service interrupts and re-enable them */
1621 if (likely(inta || inta_fh))
1622 tasklet_schedule(&priv->irq_tasklet);
1623
1624 unplugged:
1625 spin_unlock(&priv->lock);
1626 return IRQ_HANDLED;
1627
1628 none:
1629 /* re-enable interrupts here since we don't have anything to service. */
1630 /* only Re-enable if diabled by irq */
1631 if (test_bit(STATUS_INT_ENABLED, &priv->status))
1632 iwl_enable_interrupts(priv);
1633 spin_unlock(&priv->lock);
1634 return IRQ_NONE;
1635 }
1636
1637 /******************************************************************************
1638 *
1639 * uCode download functions
1640 *
1641 ******************************************************************************/
1642
1643 static void iwl_dealloc_ucode_pci(struct iwl_priv *priv)
1644 {
1645 iwl_free_fw_desc(priv->pci_dev, &priv->ucode_code);
1646 iwl_free_fw_desc(priv->pci_dev, &priv->ucode_data);
1647 iwl_free_fw_desc(priv->pci_dev, &priv->ucode_data_backup);
1648 iwl_free_fw_desc(priv->pci_dev, &priv->ucode_init);
1649 iwl_free_fw_desc(priv->pci_dev, &priv->ucode_init_data);
1650 iwl_free_fw_desc(priv->pci_dev, &priv->ucode_boot);
1651 }
1652
1653 static void iwl_nic_start(struct iwl_priv *priv)
1654 {
1655 /* Remove all resets to allow NIC to operate */
1656 iwl_write32(priv, CSR_RESET, 0);
1657 }
1658
1659
1660 /**
1661 * iwl_read_ucode - Read uCode images from disk file.
1662 *
1663 * Copy into buffers for card to fetch via bus-mastering
1664 */
1665 static int iwl_read_ucode(struct iwl_priv *priv)
1666 {
1667 struct iwl_ucode *ucode;
1668 int ret;
1669 const struct firmware *ucode_raw;
1670 const char *name = priv->cfg->fw_name;
1671 u8 *src;
1672 size_t len;
1673 u32 ver, inst_size, data_size, init_size, init_data_size, boot_size;
1674
1675 /* Ask kernel firmware_class module to get the boot firmware off disk.
1676 * request_firmware() is synchronous, file is in memory on return. */
1677 ret = request_firmware(&ucode_raw, name, &priv->pci_dev->dev);
1678 if (ret < 0) {
1679 IWL_ERROR("%s firmware file req failed: Reason %d\n",
1680 name, ret);
1681 goto error;
1682 }
1683
1684 IWL_DEBUG_INFO("Got firmware '%s' file (%zd bytes) from disk\n",
1685 name, ucode_raw->size);
1686
1687 /* Make sure that we got at least our header! */
1688 if (ucode_raw->size < sizeof(*ucode)) {
1689 IWL_ERROR("File size way too small!\n");
1690 ret = -EINVAL;
1691 goto err_release;
1692 }
1693
1694 /* Data from ucode file: header followed by uCode images */
1695 ucode = (void *)ucode_raw->data;
1696
1697 ver = le32_to_cpu(ucode->ver);
1698 inst_size = le32_to_cpu(ucode->inst_size);
1699 data_size = le32_to_cpu(ucode->data_size);
1700 init_size = le32_to_cpu(ucode->init_size);
1701 init_data_size = le32_to_cpu(ucode->init_data_size);
1702 boot_size = le32_to_cpu(ucode->boot_size);
1703
1704 IWL_DEBUG_INFO("f/w package hdr ucode version = 0x%x\n", ver);
1705 IWL_DEBUG_INFO("f/w package hdr runtime inst size = %u\n",
1706 inst_size);
1707 IWL_DEBUG_INFO("f/w package hdr runtime data size = %u\n",
1708 data_size);
1709 IWL_DEBUG_INFO("f/w package hdr init inst size = %u\n",
1710 init_size);
1711 IWL_DEBUG_INFO("f/w package hdr init data size = %u\n",
1712 init_data_size);
1713 IWL_DEBUG_INFO("f/w package hdr boot inst size = %u\n",
1714 boot_size);
1715
1716 /* Verify size of file vs. image size info in file's header */
1717 if (ucode_raw->size < sizeof(*ucode) +
1718 inst_size + data_size + init_size +
1719 init_data_size + boot_size) {
1720
1721 IWL_DEBUG_INFO("uCode file size %d too small\n",
1722 (int)ucode_raw->size);
1723 ret = -EINVAL;
1724 goto err_release;
1725 }
1726
1727 /* Verify that uCode images will fit in card's SRAM */
1728 if (inst_size > priv->hw_params.max_inst_size) {
1729 IWL_DEBUG_INFO("uCode instr len %d too large to fit in\n",
1730 inst_size);
1731 ret = -EINVAL;
1732 goto err_release;
1733 }
1734
1735 if (data_size > priv->hw_params.max_data_size) {
1736 IWL_DEBUG_INFO("uCode data len %d too large to fit in\n",
1737 data_size);
1738 ret = -EINVAL;
1739 goto err_release;
1740 }
1741 if (init_size > priv->hw_params.max_inst_size) {
1742 IWL_DEBUG_INFO
1743 ("uCode init instr len %d too large to fit in\n",
1744 init_size);
1745 ret = -EINVAL;
1746 goto err_release;
1747 }
1748 if (init_data_size > priv->hw_params.max_data_size) {
1749 IWL_DEBUG_INFO
1750 ("uCode init data len %d too large to fit in\n",
1751 init_data_size);
1752 ret = -EINVAL;
1753 goto err_release;
1754 }
1755 if (boot_size > priv->hw_params.max_bsm_size) {
1756 IWL_DEBUG_INFO
1757 ("uCode boot instr len %d too large to fit in\n",
1758 boot_size);
1759 ret = -EINVAL;
1760 goto err_release;
1761 }
1762
1763 /* Allocate ucode buffers for card's bus-master loading ... */
1764
1765 /* Runtime instructions and 2 copies of data:
1766 * 1) unmodified from disk
1767 * 2) backup cache for save/restore during power-downs */
1768 priv->ucode_code.len = inst_size;
1769 iwl_alloc_fw_desc(priv->pci_dev, &priv->ucode_code);
1770
1771 priv->ucode_data.len = data_size;
1772 iwl_alloc_fw_desc(priv->pci_dev, &priv->ucode_data);
1773
1774 priv->ucode_data_backup.len = data_size;
1775 iwl_alloc_fw_desc(priv->pci_dev, &priv->ucode_data_backup);
1776
1777 /* Initialization instructions and data */
1778 if (init_size && init_data_size) {
1779 priv->ucode_init.len = init_size;
1780 iwl_alloc_fw_desc(priv->pci_dev, &priv->ucode_init);
1781
1782 priv->ucode_init_data.len = init_data_size;
1783 iwl_alloc_fw_desc(priv->pci_dev, &priv->ucode_init_data);
1784
1785 if (!priv->ucode_init.v_addr || !priv->ucode_init_data.v_addr)
1786 goto err_pci_alloc;
1787 }
1788
1789 /* Bootstrap (instructions only, no data) */
1790 if (boot_size) {
1791 priv->ucode_boot.len = boot_size;
1792 iwl_alloc_fw_desc(priv->pci_dev, &priv->ucode_boot);
1793
1794 if (!priv->ucode_boot.v_addr)
1795 goto err_pci_alloc;
1796 }
1797
1798 /* Copy images into buffers for card's bus-master reads ... */
1799
1800 /* Runtime instructions (first block of data in file) */
1801 src = &ucode->data[0];
1802 len = priv->ucode_code.len;
1803 IWL_DEBUG_INFO("Copying (but not loading) uCode instr len %Zd\n", len);
1804 memcpy(priv->ucode_code.v_addr, src, len);
1805 IWL_DEBUG_INFO("uCode instr buf vaddr = 0x%p, paddr = 0x%08x\n",
1806 priv->ucode_code.v_addr, (u32)priv->ucode_code.p_addr);
1807
1808 /* Runtime data (2nd block)
1809 * NOTE: Copy into backup buffer will be done in iwl_up() */
1810 src = &ucode->data[inst_size];
1811 len = priv->ucode_data.len;
1812 IWL_DEBUG_INFO("Copying (but not loading) uCode data len %Zd\n", len);
1813 memcpy(priv->ucode_data.v_addr, src, len);
1814 memcpy(priv->ucode_data_backup.v_addr, src, len);
1815
1816 /* Initialization instructions (3rd block) */
1817 if (init_size) {
1818 src = &ucode->data[inst_size + data_size];
1819 len = priv->ucode_init.len;
1820 IWL_DEBUG_INFO("Copying (but not loading) init instr len %Zd\n",
1821 len);
1822 memcpy(priv->ucode_init.v_addr, src, len);
1823 }
1824
1825 /* Initialization data (4th block) */
1826 if (init_data_size) {
1827 src = &ucode->data[inst_size + data_size + init_size];
1828 len = priv->ucode_init_data.len;
1829 IWL_DEBUG_INFO("Copying (but not loading) init data len %Zd\n",
1830 len);
1831 memcpy(priv->ucode_init_data.v_addr, src, len);
1832 }
1833
1834 /* Bootstrap instructions (5th block) */
1835 src = &ucode->data[inst_size + data_size + init_size + init_data_size];
1836 len = priv->ucode_boot.len;
1837 IWL_DEBUG_INFO("Copying (but not loading) boot instr len %Zd\n", len);
1838 memcpy(priv->ucode_boot.v_addr, src, len);
1839
1840 /* We have our copies now, allow OS release its copies */
1841 release_firmware(ucode_raw);
1842 return 0;
1843
1844 err_pci_alloc:
1845 IWL_ERROR("failed to allocate pci memory\n");
1846 ret = -ENOMEM;
1847 iwl_dealloc_ucode_pci(priv);
1848
1849 err_release:
1850 release_firmware(ucode_raw);
1851
1852 error:
1853 return ret;
1854 }
1855
1856 /* temporary */
1857 static int iwl_mac_beacon_update(struct ieee80211_hw *hw,
1858 struct sk_buff *skb);
1859
1860 /**
1861 * iwl_alive_start - called after REPLY_ALIVE notification received
1862 * from protocol/runtime uCode (initialization uCode's
1863 * Alive gets handled by iwl_init_alive_start()).
1864 */
1865 static void iwl_alive_start(struct iwl_priv *priv)
1866 {
1867 int ret = 0;
1868
1869 IWL_DEBUG_INFO("Runtime Alive received.\n");
1870
1871 if (priv->card_alive.is_valid != UCODE_VALID_OK) {
1872 /* We had an error bringing up the hardware, so take it
1873 * all the way back down so we can try again */
1874 IWL_DEBUG_INFO("Alive failed.\n");
1875 goto restart;
1876 }
1877
1878 /* Initialize uCode has loaded Runtime uCode ... verify inst image.
1879 * This is a paranoid check, because we would not have gotten the
1880 * "runtime" alive if code weren't properly loaded. */
1881 if (iwl_verify_ucode(priv)) {
1882 /* Runtime instruction load was bad;
1883 * take it all the way back down so we can try again */
1884 IWL_DEBUG_INFO("Bad runtime uCode load.\n");
1885 goto restart;
1886 }
1887
1888 iwl_clear_stations_table(priv);
1889 ret = priv->cfg->ops->lib->alive_notify(priv);
1890 if (ret) {
1891 IWL_WARNING("Could not complete ALIVE transition [ntf]: %d\n",
1892 ret);
1893 goto restart;
1894 }
1895
1896 /* After the ALIVE response, we can send host commands to the uCode */
1897 set_bit(STATUS_ALIVE, &priv->status);
1898
1899 if (iwl_is_rfkill(priv))
1900 return;
1901
1902 ieee80211_wake_queues(priv->hw);
1903
1904 priv->active_rate = priv->rates_mask;
1905 priv->active_rate_basic = priv->rates_mask & IWL_BASIC_RATES_MASK;
1906
1907 if (iwl_is_associated(priv)) {
1908 struct iwl_rxon_cmd *active_rxon =
1909 (struct iwl_rxon_cmd *)&priv->active_rxon;
1910
1911 memcpy(&priv->staging_rxon, &priv->active_rxon,
1912 sizeof(priv->staging_rxon));
1913 active_rxon->filter_flags &= ~RXON_FILTER_ASSOC_MSK;
1914 } else {
1915 /* Initialize our rx_config data */
1916 iwl_connection_init_rx_config(priv, priv->iw_mode);
1917 memcpy(priv->staging_rxon.node_addr, priv->mac_addr, ETH_ALEN);
1918 }
1919
1920 /* Configure Bluetooth device coexistence support */
1921 iwl_send_bt_config(priv);
1922
1923 iwl_reset_run_time_calib(priv);
1924
1925 /* Configure the adapter for unassociated operation */
1926 iwl_commit_rxon(priv);
1927
1928 /* At this point, the NIC is initialized and operational */
1929 iwl_rf_kill_ct_config(priv);
1930
1931 iwl_leds_register(priv);
1932
1933 IWL_DEBUG_INFO("ALIVE processing complete.\n");
1934 set_bit(STATUS_READY, &priv->status);
1935 wake_up_interruptible(&priv->wait_command_queue);
1936
1937 if (priv->error_recovering)
1938 iwl_error_recovery(priv);
1939
1940 iwl_power_update_mode(priv, 1);
1941
1942 /* reassociate for ADHOC mode */
1943 if (priv->vif && (priv->iw_mode == NL80211_IFTYPE_ADHOC)) {
1944 struct sk_buff *beacon = ieee80211_beacon_get(priv->hw,
1945 priv->vif);
1946 if (beacon)
1947 iwl_mac_beacon_update(priv->hw, beacon);
1948 }
1949
1950
1951 if (test_and_clear_bit(STATUS_MODE_PENDING, &priv->status))
1952 iwl_set_mode(priv, priv->iw_mode);
1953
1954 return;
1955
1956 restart:
1957 queue_work(priv->workqueue, &priv->restart);
1958 }
1959
1960 static void iwl_cancel_deferred_work(struct iwl_priv *priv);
1961
1962 static void __iwl_down(struct iwl_priv *priv)
1963 {
1964 unsigned long flags;
1965 int exit_pending = test_bit(STATUS_EXIT_PENDING, &priv->status);
1966
1967 IWL_DEBUG_INFO(DRV_NAME " is going down\n");
1968
1969 if (!exit_pending)
1970 set_bit(STATUS_EXIT_PENDING, &priv->status);
1971
1972 iwl_leds_unregister(priv);
1973
1974 iwl_clear_stations_table(priv);
1975
1976 /* Unblock any waiting calls */
1977 wake_up_interruptible_all(&priv->wait_command_queue);
1978
1979 /* Wipe out the EXIT_PENDING status bit if we are not actually
1980 * exiting the module */
1981 if (!exit_pending)
1982 clear_bit(STATUS_EXIT_PENDING, &priv->status);
1983
1984 /* stop and reset the on-board processor */
1985 iwl_write32(priv, CSR_RESET, CSR_RESET_REG_FLAG_NEVO_RESET);
1986
1987 /* tell the device to stop sending interrupts */
1988 spin_lock_irqsave(&priv->lock, flags);
1989 iwl_disable_interrupts(priv);
1990 spin_unlock_irqrestore(&priv->lock, flags);
1991 iwl_synchronize_irq(priv);
1992
1993 if (priv->mac80211_registered)
1994 ieee80211_stop_queues(priv->hw);
1995
1996 /* If we have not previously called iwl_init() then
1997 * clear all bits but the RF Kill and SUSPEND bits and return */
1998 if (!iwl_is_init(priv)) {
1999 priv->status = test_bit(STATUS_RF_KILL_HW, &priv->status) <<
2000 STATUS_RF_KILL_HW |
2001 test_bit(STATUS_RF_KILL_SW, &priv->status) <<
2002 STATUS_RF_KILL_SW |
2003 test_bit(STATUS_GEO_CONFIGURED, &priv->status) <<
2004 STATUS_GEO_CONFIGURED |
2005 test_bit(STATUS_IN_SUSPEND, &priv->status) <<
2006 STATUS_IN_SUSPEND |
2007 test_bit(STATUS_EXIT_PENDING, &priv->status) <<
2008 STATUS_EXIT_PENDING;
2009 goto exit;
2010 }
2011
2012 /* ...otherwise clear out all the status bits but the RF Kill and
2013 * SUSPEND bits and continue taking the NIC down. */
2014 priv->status &= test_bit(STATUS_RF_KILL_HW, &priv->status) <<
2015 STATUS_RF_KILL_HW |
2016 test_bit(STATUS_RF_KILL_SW, &priv->status) <<
2017 STATUS_RF_KILL_SW |
2018 test_bit(STATUS_GEO_CONFIGURED, &priv->status) <<
2019 STATUS_GEO_CONFIGURED |
2020 test_bit(STATUS_IN_SUSPEND, &priv->status) <<
2021 STATUS_IN_SUSPEND |
2022 test_bit(STATUS_FW_ERROR, &priv->status) <<
2023 STATUS_FW_ERROR |
2024 test_bit(STATUS_EXIT_PENDING, &priv->status) <<
2025 STATUS_EXIT_PENDING;
2026
2027 spin_lock_irqsave(&priv->lock, flags);
2028 iwl_clear_bit(priv, CSR_GP_CNTRL,
2029 CSR_GP_CNTRL_REG_FLAG_MAC_ACCESS_REQ);
2030 spin_unlock_irqrestore(&priv->lock, flags);
2031
2032 iwl_txq_ctx_stop(priv);
2033 iwl_rxq_stop(priv);
2034
2035 spin_lock_irqsave(&priv->lock, flags);
2036 if (!iwl_grab_nic_access(priv)) {
2037 iwl_write_prph(priv, APMG_CLK_DIS_REG,
2038 APMG_CLK_VAL_DMA_CLK_RQT);
2039 iwl_release_nic_access(priv);
2040 }
2041 spin_unlock_irqrestore(&priv->lock, flags);
2042
2043 udelay(5);
2044
2045 /* FIXME: apm_ops.suspend(priv) */
2046 if (exit_pending || test_bit(STATUS_IN_SUSPEND, &priv->status))
2047 priv->cfg->ops->lib->apm_ops.stop(priv);
2048 else
2049 priv->cfg->ops->lib->apm_ops.reset(priv);
2050 exit:
2051 memset(&priv->card_alive, 0, sizeof(struct iwl_alive_resp));
2052
2053 if (priv->ibss_beacon)
2054 dev_kfree_skb(priv->ibss_beacon);
2055 priv->ibss_beacon = NULL;
2056
2057 /* clear out any free frames */
2058 iwl_clear_free_frames(priv);
2059 }
2060
2061 static void iwl_down(struct iwl_priv *priv)
2062 {
2063 mutex_lock(&priv->mutex);
2064 __iwl_down(priv);
2065 mutex_unlock(&priv->mutex);
2066
2067 iwl_cancel_deferred_work(priv);
2068 }
2069
2070 #define MAX_HW_RESTARTS 5
2071
2072 static int __iwl_up(struct iwl_priv *priv)
2073 {
2074 int i;
2075 int ret;
2076
2077 if (test_bit(STATUS_EXIT_PENDING, &priv->status)) {
2078 IWL_WARNING("Exit pending; will not bring the NIC up\n");
2079 return -EIO;
2080 }
2081
2082 if (!priv->ucode_data_backup.v_addr || !priv->ucode_data.v_addr) {
2083 IWL_ERROR("ucode not available for device bringup\n");
2084 return -EIO;
2085 }
2086
2087 /* If platform's RF_KILL switch is NOT set to KILL */
2088 if (iwl_read32(priv, CSR_GP_CNTRL) & CSR_GP_CNTRL_REG_FLAG_HW_RF_KILL_SW)
2089 clear_bit(STATUS_RF_KILL_HW, &priv->status);
2090 else
2091 set_bit(STATUS_RF_KILL_HW, &priv->status);
2092
2093 if (iwl_is_rfkill(priv)) {
2094 iwl_enable_interrupts(priv);
2095 IWL_WARNING("Radio disabled by %s RF Kill switch\n",
2096 test_bit(STATUS_RF_KILL_HW, &priv->status) ? "HW" : "SW");
2097 return 0;
2098 }
2099
2100 iwl_write32(priv, CSR_INT, 0xFFFFFFFF);
2101
2102 ret = iwl_hw_nic_init(priv);
2103 if (ret) {
2104 IWL_ERROR("Unable to init nic\n");
2105 return ret;
2106 }
2107
2108 /* make sure rfkill handshake bits are cleared */
2109 iwl_write32(priv, CSR_UCODE_DRV_GP1_CLR, CSR_UCODE_SW_BIT_RFKILL);
2110 iwl_write32(priv, CSR_UCODE_DRV_GP1_CLR,
2111 CSR_UCODE_DRV_GP1_BIT_CMD_BLOCKED);
2112
2113 /* clear (again), then enable host interrupts */
2114 iwl_write32(priv, CSR_INT, 0xFFFFFFFF);
2115 iwl_enable_interrupts(priv);
2116
2117 /* really make sure rfkill handshake bits are cleared */
2118 iwl_write32(priv, CSR_UCODE_DRV_GP1_CLR, CSR_UCODE_SW_BIT_RFKILL);
2119 iwl_write32(priv, CSR_UCODE_DRV_GP1_CLR, CSR_UCODE_SW_BIT_RFKILL);
2120
2121 /* Copy original ucode data image from disk into backup cache.
2122 * This will be used to initialize the on-board processor's
2123 * data SRAM for a clean start when the runtime program first loads. */
2124 memcpy(priv->ucode_data_backup.v_addr, priv->ucode_data.v_addr,
2125 priv->ucode_data.len);
2126
2127 for (i = 0; i < MAX_HW_RESTARTS; i++) {
2128
2129 iwl_clear_stations_table(priv);
2130
2131 /* load bootstrap state machine,
2132 * load bootstrap program into processor's memory,
2133 * prepare to load the "initialize" uCode */
2134 ret = priv->cfg->ops->lib->load_ucode(priv);
2135
2136 if (ret) {
2137 IWL_ERROR("Unable to set up bootstrap uCode: %d\n", ret);
2138 continue;
2139 }
2140
2141 /* Clear out the uCode error bit if it is set */
2142 clear_bit(STATUS_FW_ERROR, &priv->status);
2143
2144 /* start card; "initialize" will load runtime ucode */
2145 iwl_nic_start(priv);
2146
2147 IWL_DEBUG_INFO(DRV_NAME " is coming up\n");
2148
2149 return 0;
2150 }
2151
2152 set_bit(STATUS_EXIT_PENDING, &priv->status);
2153 __iwl_down(priv);
2154 clear_bit(STATUS_EXIT_PENDING, &priv->status);
2155
2156 /* tried to restart and config the device for as long as our
2157 * patience could withstand */
2158 IWL_ERROR("Unable to initialize device after %d attempts.\n", i);
2159 return -EIO;
2160 }
2161
2162
2163 /*****************************************************************************
2164 *
2165 * Workqueue callbacks
2166 *
2167 *****************************************************************************/
2168
2169 static void iwl_bg_init_alive_start(struct work_struct *data)
2170 {
2171 struct iwl_priv *priv =
2172 container_of(data, struct iwl_priv, init_alive_start.work);
2173
2174 if (test_bit(STATUS_EXIT_PENDING, &priv->status))
2175 return;
2176
2177 mutex_lock(&priv->mutex);
2178 priv->cfg->ops->lib->init_alive_start(priv);
2179 mutex_unlock(&priv->mutex);
2180 }
2181
2182 static void iwl_bg_alive_start(struct work_struct *data)
2183 {
2184 struct iwl_priv *priv =
2185 container_of(data, struct iwl_priv, alive_start.work);
2186
2187 if (test_bit(STATUS_EXIT_PENDING, &priv->status))
2188 return;
2189
2190 mutex_lock(&priv->mutex);
2191 iwl_alive_start(priv);
2192 mutex_unlock(&priv->mutex);
2193 }
2194
2195 static void iwl_bg_rf_kill(struct work_struct *work)
2196 {
2197 struct iwl_priv *priv = container_of(work, struct iwl_priv, rf_kill);
2198
2199 wake_up_interruptible(&priv->wait_command_queue);
2200
2201 if (test_bit(STATUS_EXIT_PENDING, &priv->status))
2202 return;
2203
2204 mutex_lock(&priv->mutex);
2205
2206 if (!iwl_is_rfkill(priv)) {
2207 IWL_DEBUG(IWL_DL_RF_KILL,
2208 "HW and/or SW RF Kill no longer active, restarting "
2209 "device\n");
2210 if (!test_bit(STATUS_EXIT_PENDING, &priv->status))
2211 queue_work(priv->workqueue, &priv->restart);
2212 } else {
2213 /* make sure mac80211 stop sending Tx frame */
2214 if (priv->mac80211_registered)
2215 ieee80211_stop_queues(priv->hw);
2216
2217 if (!test_bit(STATUS_RF_KILL_HW, &priv->status))
2218 IWL_DEBUG_RF_KILL("Can not turn radio back on - "
2219 "disabled by SW switch\n");
2220 else
2221 IWL_WARNING("Radio Frequency Kill Switch is On:\n"
2222 "Kill switch must be turned off for "
2223 "wireless networking to work.\n");
2224 }
2225 mutex_unlock(&priv->mutex);
2226 iwl_rfkill_set_hw_state(priv);
2227 }
2228
2229 static void iwl_bg_run_time_calib_work(struct work_struct *work)
2230 {
2231 struct iwl_priv *priv = container_of(work, struct iwl_priv,
2232 run_time_calib_work);
2233
2234 mutex_lock(&priv->mutex);
2235
2236 if (test_bit(STATUS_EXIT_PENDING, &priv->status) ||
2237 test_bit(STATUS_SCANNING, &priv->status)) {
2238 mutex_unlock(&priv->mutex);
2239 return;
2240 }
2241
2242 if (priv->start_calib) {
2243 iwl_chain_noise_calibration(priv, &priv->statistics);
2244
2245 iwl_sensitivity_calibration(priv, &priv->statistics);
2246 }
2247
2248 mutex_unlock(&priv->mutex);
2249 return;
2250 }
2251
2252 static void iwl_bg_up(struct work_struct *data)
2253 {
2254 struct iwl_priv *priv = container_of(data, struct iwl_priv, up);
2255
2256 if (test_bit(STATUS_EXIT_PENDING, &priv->status))
2257 return;
2258
2259 mutex_lock(&priv->mutex);
2260 __iwl_up(priv);
2261 mutex_unlock(&priv->mutex);
2262 iwl_rfkill_set_hw_state(priv);
2263 }
2264
2265 static void iwl_bg_restart(struct work_struct *data)
2266 {
2267 struct iwl_priv *priv = container_of(data, struct iwl_priv, restart);
2268
2269 if (test_bit(STATUS_EXIT_PENDING, &priv->status))
2270 return;
2271
2272 iwl_down(priv);
2273 queue_work(priv->workqueue, &priv->up);
2274 }
2275
2276 static void iwl_bg_rx_replenish(struct work_struct *data)
2277 {
2278 struct iwl_priv *priv =
2279 container_of(data, struct iwl_priv, rx_replenish);
2280
2281 if (test_bit(STATUS_EXIT_PENDING, &priv->status))
2282 return;
2283
2284 mutex_lock(&priv->mutex);
2285 iwl_rx_replenish(priv);
2286 mutex_unlock(&priv->mutex);
2287 }
2288
2289 #define IWL_DELAY_NEXT_SCAN (HZ*2)
2290
2291 static void iwl_post_associate(struct iwl_priv *priv)
2292 {
2293 struct ieee80211_conf *conf = NULL;
2294 int ret = 0;
2295 unsigned long flags;
2296
2297 if (priv->iw_mode == NL80211_IFTYPE_AP) {
2298 IWL_ERROR("%s Should not be called in AP mode\n", __func__);
2299 return;
2300 }
2301
2302 IWL_DEBUG_ASSOC("Associated as %d to: %pM\n",
2303 priv->assoc_id, priv->active_rxon.bssid_addr);
2304
2305
2306 if (test_bit(STATUS_EXIT_PENDING, &priv->status))
2307 return;
2308
2309
2310 if (!priv->vif || !priv->is_open)
2311 return;
2312
2313 iwl_power_cancel_timeout(priv);
2314 iwl_scan_cancel_timeout(priv, 200);
2315
2316 conf = ieee80211_get_hw_conf(priv->hw);
2317
2318 priv->staging_rxon.filter_flags &= ~RXON_FILTER_ASSOC_MSK;
2319 iwl_commit_rxon(priv);
2320
2321 iwl_setup_rxon_timing(priv);
2322 ret = iwl_send_cmd_pdu(priv, REPLY_RXON_TIMING,
2323 sizeof(priv->rxon_timing), &priv->rxon_timing);
2324 if (ret)
2325 IWL_WARNING("REPLY_RXON_TIMING failed - "
2326 "Attempting to continue.\n");
2327
2328 priv->staging_rxon.filter_flags |= RXON_FILTER_ASSOC_MSK;
2329
2330 iwl_set_rxon_ht(priv, &priv->current_ht_config);
2331
2332 iwl_set_rxon_chain(priv);
2333 priv->staging_rxon.assoc_id = cpu_to_le16(priv->assoc_id);
2334
2335 IWL_DEBUG_ASSOC("assoc id %d beacon interval %d\n",
2336 priv->assoc_id, priv->beacon_int);
2337
2338 if (priv->assoc_capability & WLAN_CAPABILITY_SHORT_PREAMBLE)
2339 priv->staging_rxon.flags |= RXON_FLG_SHORT_PREAMBLE_MSK;
2340 else
2341 priv->staging_rxon.flags &= ~RXON_FLG_SHORT_PREAMBLE_MSK;
2342
2343 if (priv->staging_rxon.flags & RXON_FLG_BAND_24G_MSK) {
2344 if (priv->assoc_capability & WLAN_CAPABILITY_SHORT_SLOT_TIME)
2345 priv->staging_rxon.flags |= RXON_FLG_SHORT_SLOT_MSK;
2346 else
2347 priv->staging_rxon.flags &= ~RXON_FLG_SHORT_SLOT_MSK;
2348
2349 if (priv->iw_mode == NL80211_IFTYPE_ADHOC)
2350 priv->staging_rxon.flags &= ~RXON_FLG_SHORT_SLOT_MSK;
2351
2352 }
2353
2354 iwl_commit_rxon(priv);
2355
2356 switch (priv->iw_mode) {
2357 case NL80211_IFTYPE_STATION:
2358 break;
2359
2360 case NL80211_IFTYPE_ADHOC:
2361
2362 /* assume default assoc id */
2363 priv->assoc_id = 1;
2364
2365 iwl_rxon_add_station(priv, priv->bssid, 0);
2366 iwl_send_beacon_cmd(priv);
2367
2368 break;
2369
2370 default:
2371 IWL_ERROR("%s Should not be called in %d mode\n",
2372 __func__, priv->iw_mode);
2373 break;
2374 }
2375
2376 if (priv->iw_mode == NL80211_IFTYPE_ADHOC)
2377 priv->assoc_station_added = 1;
2378
2379 spin_lock_irqsave(&priv->lock, flags);
2380 iwl_activate_qos(priv, 0);
2381 spin_unlock_irqrestore(&priv->lock, flags);
2382
2383 /* the chain noise calibration will enabled PM upon completion
2384 * If chain noise has already been run, then we need to enable
2385 * power management here */
2386 if (priv->chain_noise_data.state == IWL_CHAIN_NOISE_DONE)
2387 iwl_power_enable_management(priv);
2388
2389 /* Enable Rx differential gain and sensitivity calibrations */
2390 iwl_chain_noise_reset(priv);
2391 priv->start_calib = 1;
2392
2393 }
2394
2395 /*****************************************************************************
2396 *
2397 * mac80211 entry point functions
2398 *
2399 *****************************************************************************/
2400
2401 #define UCODE_READY_TIMEOUT (4 * HZ)
2402
2403 static int iwl_mac_start(struct ieee80211_hw *hw)
2404 {
2405 struct iwl_priv *priv = hw->priv;
2406 int ret;
2407 u16 pci_cmd;
2408
2409 IWL_DEBUG_MAC80211("enter\n");
2410
2411 if (pci_enable_device(priv->pci_dev)) {
2412 IWL_ERROR("Fail to pci_enable_device\n");
2413 return -ENODEV;
2414 }
2415 pci_restore_state(priv->pci_dev);
2416 pci_enable_msi(priv->pci_dev);
2417
2418 /* enable interrupts if needed: hw bug w/a */
2419 pci_read_config_word(priv->pci_dev, PCI_COMMAND, &pci_cmd);
2420 if (pci_cmd & PCI_COMMAND_INTX_DISABLE) {
2421 pci_cmd &= ~PCI_COMMAND_INTX_DISABLE;
2422 pci_write_config_word(priv->pci_dev, PCI_COMMAND, pci_cmd);
2423 }
2424
2425 ret = request_irq(priv->pci_dev->irq, iwl_isr, IRQF_SHARED,
2426 DRV_NAME, priv);
2427 if (ret) {
2428 IWL_ERROR("Error allocating IRQ %d\n", priv->pci_dev->irq);
2429 goto out_disable_msi;
2430 }
2431
2432 /* we should be verifying the device is ready to be opened */
2433 mutex_lock(&priv->mutex);
2434
2435 memset(&priv->staging_rxon, 0, sizeof(struct iwl_rxon_cmd));
2436 /* fetch ucode file from disk, alloc and copy to bus-master buffers ...
2437 * ucode filename and max sizes are card-specific. */
2438
2439 if (!priv->ucode_code.len) {
2440 ret = iwl_read_ucode(priv);
2441 if (ret) {
2442 IWL_ERROR("Could not read microcode: %d\n", ret);
2443 mutex_unlock(&priv->mutex);
2444 goto out_release_irq;
2445 }
2446 }
2447
2448 ret = __iwl_up(priv);
2449
2450 mutex_unlock(&priv->mutex);
2451
2452 iwl_rfkill_set_hw_state(priv);
2453
2454 if (ret)
2455 goto out_release_irq;
2456
2457 if (iwl_is_rfkill(priv))
2458 goto out;
2459
2460 IWL_DEBUG_INFO("Start UP work done.\n");
2461
2462 if (test_bit(STATUS_IN_SUSPEND, &priv->status))
2463 return 0;
2464
2465 /* Wait for START_ALIVE from Run Time ucode. Otherwise callbacks from
2466 * mac80211 will not be run successfully. */
2467 ret = wait_event_interruptible_timeout(priv->wait_command_queue,
2468 test_bit(STATUS_READY, &priv->status),
2469 UCODE_READY_TIMEOUT);
2470 if (!ret) {
2471 if (!test_bit(STATUS_READY, &priv->status)) {
2472 IWL_ERROR("START_ALIVE timeout after %dms.\n",
2473 jiffies_to_msecs(UCODE_READY_TIMEOUT));
2474 ret = -ETIMEDOUT;
2475 goto out_release_irq;
2476 }
2477 }
2478
2479 out:
2480 priv->is_open = 1;
2481 IWL_DEBUG_MAC80211("leave\n");
2482 return 0;
2483
2484 out_release_irq:
2485 free_irq(priv->pci_dev->irq, priv);
2486 out_disable_msi:
2487 pci_disable_msi(priv->pci_dev);
2488 pci_disable_device(priv->pci_dev);
2489 priv->is_open = 0;
2490 IWL_DEBUG_MAC80211("leave - failed\n");
2491 return ret;
2492 }
2493
2494 static void iwl_mac_stop(struct ieee80211_hw *hw)
2495 {
2496 struct iwl_priv *priv = hw->priv;
2497
2498 IWL_DEBUG_MAC80211("enter\n");
2499
2500 if (!priv->is_open) {
2501 IWL_DEBUG_MAC80211("leave - skip\n");
2502 return;
2503 }
2504
2505 priv->is_open = 0;
2506
2507 if (iwl_is_ready_rf(priv)) {
2508 /* stop mac, cancel any scan request and clear
2509 * RXON_FILTER_ASSOC_MSK BIT
2510 */
2511 mutex_lock(&priv->mutex);
2512 iwl_scan_cancel_timeout(priv, 100);
2513 mutex_unlock(&priv->mutex);
2514 }
2515
2516 iwl_down(priv);
2517
2518 flush_workqueue(priv->workqueue);
2519 free_irq(priv->pci_dev->irq, priv);
2520 pci_disable_msi(priv->pci_dev);
2521 pci_save_state(priv->pci_dev);
2522 pci_disable_device(priv->pci_dev);
2523
2524 IWL_DEBUG_MAC80211("leave\n");
2525 }
2526
2527 static int iwl_mac_tx(struct ieee80211_hw *hw, struct sk_buff *skb)
2528 {
2529 struct iwl_priv *priv = hw->priv;
2530
2531 IWL_DEBUG_MACDUMP("enter\n");
2532
2533 IWL_DEBUG_TX("dev->xmit(%d bytes) at rate 0x%02x\n", skb->len,
2534 ieee80211_get_tx_rate(hw, IEEE80211_SKB_CB(skb))->bitrate);
2535
2536 if (iwl_tx_skb(priv, skb))
2537 dev_kfree_skb_any(skb);
2538
2539 IWL_DEBUG_MACDUMP("leave\n");
2540 return 0;
2541 }
2542
2543 static int iwl_mac_add_interface(struct ieee80211_hw *hw,
2544 struct ieee80211_if_init_conf *conf)
2545 {
2546 struct iwl_priv *priv = hw->priv;
2547 unsigned long flags;
2548
2549 IWL_DEBUG_MAC80211("enter: type %d\n", conf->type);
2550
2551 if (priv->vif) {
2552 IWL_DEBUG_MAC80211("leave - vif != NULL\n");
2553 return -EOPNOTSUPP;
2554 }
2555
2556 spin_lock_irqsave(&priv->lock, flags);
2557 priv->vif = conf->vif;
2558 priv->iw_mode = conf->type;
2559
2560 spin_unlock_irqrestore(&priv->lock, flags);
2561
2562 mutex_lock(&priv->mutex);
2563
2564 if (conf->mac_addr) {
2565 IWL_DEBUG_MAC80211("Set %pM\n", conf->mac_addr);
2566 memcpy(priv->mac_addr, conf->mac_addr, ETH_ALEN);
2567 }
2568
2569 if (iwl_set_mode(priv, conf->type) == -EAGAIN)
2570 /* we are not ready, will run again when ready */
2571 set_bit(STATUS_MODE_PENDING, &priv->status);
2572
2573 mutex_unlock(&priv->mutex);
2574
2575 IWL_DEBUG_MAC80211("leave\n");
2576 return 0;
2577 }
2578
2579 /**
2580 * iwl_mac_config - mac80211 config callback
2581 *
2582 * We ignore conf->flags & IEEE80211_CONF_SHORT_SLOT_TIME since it seems to
2583 * be set inappropriately and the driver currently sets the hardware up to
2584 * use it whenever needed.
2585 */
2586 static int iwl_mac_config(struct ieee80211_hw *hw, u32 changed)
2587 {
2588 struct iwl_priv *priv = hw->priv;
2589 const struct iwl_channel_info *ch_info;
2590 struct ieee80211_conf *conf = &hw->conf;
2591 unsigned long flags;
2592 int ret = 0;
2593 u16 channel;
2594
2595 mutex_lock(&priv->mutex);
2596 IWL_DEBUG_MAC80211("enter to channel %d\n", conf->channel->hw_value);
2597
2598 priv->current_ht_config.is_ht = conf->ht.enabled;
2599
2600 if (conf->radio_enabled && iwl_radio_kill_sw_enable_radio(priv)) {
2601 IWL_DEBUG_MAC80211("leave - RF-KILL - waiting for uCode\n");
2602 goto out;
2603 }
2604
2605 if (!conf->radio_enabled)
2606 iwl_radio_kill_sw_disable_radio(priv);
2607
2608 if (!iwl_is_ready(priv)) {
2609 IWL_DEBUG_MAC80211("leave - not ready\n");
2610 ret = -EIO;
2611 goto out;
2612 }
2613
2614 if (unlikely(!priv->cfg->mod_params->disable_hw_scan &&
2615 test_bit(STATUS_SCANNING, &priv->status))) {
2616 IWL_DEBUG_MAC80211("leave - scanning\n");
2617 mutex_unlock(&priv->mutex);
2618 return 0;
2619 }
2620
2621 channel = ieee80211_frequency_to_channel(conf->channel->center_freq);
2622 ch_info = iwl_get_channel_info(priv, conf->channel->band, channel);
2623 if (!is_channel_valid(ch_info)) {
2624 IWL_DEBUG_MAC80211("leave - invalid channel\n");
2625 ret = -EINVAL;
2626 goto out;
2627 }
2628
2629 if (priv->iw_mode == NL80211_IFTYPE_ADHOC &&
2630 !is_channel_ibss(ch_info)) {
2631 IWL_ERROR("channel %d in band %d not IBSS channel\n",
2632 conf->channel->hw_value, conf->channel->band);
2633 ret = -EINVAL;
2634 goto out;
2635 }
2636
2637 spin_lock_irqsave(&priv->lock, flags);
2638
2639
2640 /* if we are switching from ht to 2.4 clear flags
2641 * from any ht related info since 2.4 does not
2642 * support ht */
2643 if ((le16_to_cpu(priv->staging_rxon.channel) != channel)
2644 #ifdef IEEE80211_CONF_CHANNEL_SWITCH
2645 && !(conf->flags & IEEE80211_CONF_CHANNEL_SWITCH)
2646 #endif
2647 )
2648 priv->staging_rxon.flags = 0;
2649
2650 iwl_set_rxon_channel(priv, conf->channel);
2651
2652 iwl_set_flags_for_band(priv, conf->channel->band);
2653
2654 /* The list of supported rates and rate mask can be different
2655 * for each band; since the band may have changed, reset
2656 * the rate mask to what mac80211 lists */
2657 iwl_set_rate(priv);
2658
2659 spin_unlock_irqrestore(&priv->lock, flags);
2660
2661 #ifdef IEEE80211_CONF_CHANNEL_SWITCH
2662 if (conf->flags & IEEE80211_CONF_CHANNEL_SWITCH) {
2663 iwl_hw_channel_switch(priv, conf->channel);
2664 goto out;
2665 }
2666 #endif
2667
2668 if (!conf->radio_enabled) {
2669 IWL_DEBUG_MAC80211("leave - radio disabled\n");
2670 goto out;
2671 }
2672
2673 if (iwl_is_rfkill(priv)) {
2674 IWL_DEBUG_MAC80211("leave - RF kill\n");
2675 ret = -EIO;
2676 goto out;
2677 }
2678
2679 if (conf->flags & IEEE80211_CONF_PS)
2680 ret = iwl_power_set_user_mode(priv, IWL_POWER_INDEX_3);
2681 else
2682 ret = iwl_power_set_user_mode(priv, IWL_POWER_MODE_CAM);
2683 if (ret)
2684 IWL_DEBUG_MAC80211("Error setting power level\n");
2685
2686 IWL_DEBUG_MAC80211("TX Power old=%d new=%d\n",
2687 priv->tx_power_user_lmt, conf->power_level);
2688
2689 iwl_set_tx_power(priv, conf->power_level, false);
2690
2691 iwl_set_rate(priv);
2692
2693 if (memcmp(&priv->active_rxon,
2694 &priv->staging_rxon, sizeof(priv->staging_rxon)))
2695 iwl_commit_rxon(priv);
2696 else
2697 IWL_DEBUG_INFO("No re-sending same RXON configuration.\n");
2698
2699 IWL_DEBUG_MAC80211("leave\n");
2700
2701 out:
2702 mutex_unlock(&priv->mutex);
2703 return ret;
2704 }
2705
2706 static void iwl_config_ap(struct iwl_priv *priv)
2707 {
2708 int ret = 0;
2709 unsigned long flags;
2710
2711 if (test_bit(STATUS_EXIT_PENDING, &priv->status))
2712 return;
2713
2714 /* The following should be done only at AP bring up */
2715 if (!iwl_is_associated(priv)) {
2716
2717 /* RXON - unassoc (to set timing command) */
2718 priv->staging_rxon.filter_flags &= ~RXON_FILTER_ASSOC_MSK;
2719 iwl_commit_rxon(priv);
2720
2721 /* RXON Timing */
2722 iwl_setup_rxon_timing(priv);
2723 ret = iwl_send_cmd_pdu(priv, REPLY_RXON_TIMING,
2724 sizeof(priv->rxon_timing), &priv->rxon_timing);
2725 if (ret)
2726 IWL_WARNING("REPLY_RXON_TIMING failed - "
2727 "Attempting to continue.\n");
2728
2729 iwl_set_rxon_chain(priv);
2730
2731 /* FIXME: what should be the assoc_id for AP? */
2732 priv->staging_rxon.assoc_id = cpu_to_le16(priv->assoc_id);
2733 if (priv->assoc_capability & WLAN_CAPABILITY_SHORT_PREAMBLE)
2734 priv->staging_rxon.flags |=
2735 RXON_FLG_SHORT_PREAMBLE_MSK;
2736 else
2737 priv->staging_rxon.flags &=
2738 ~RXON_FLG_SHORT_PREAMBLE_MSK;
2739
2740 if (priv->staging_rxon.flags & RXON_FLG_BAND_24G_MSK) {
2741 if (priv->assoc_capability &
2742 WLAN_CAPABILITY_SHORT_SLOT_TIME)
2743 priv->staging_rxon.flags |=
2744 RXON_FLG_SHORT_SLOT_MSK;
2745 else
2746 priv->staging_rxon.flags &=
2747 ~RXON_FLG_SHORT_SLOT_MSK;
2748
2749 if (priv->iw_mode == NL80211_IFTYPE_ADHOC)
2750 priv->staging_rxon.flags &=
2751 ~RXON_FLG_SHORT_SLOT_MSK;
2752 }
2753 /* restore RXON assoc */
2754 priv->staging_rxon.filter_flags |= RXON_FILTER_ASSOC_MSK;
2755 iwl_commit_rxon(priv);
2756 spin_lock_irqsave(&priv->lock, flags);
2757 iwl_activate_qos(priv, 1);
2758 spin_unlock_irqrestore(&priv->lock, flags);
2759 iwl_rxon_add_station(priv, iwl_bcast_addr, 0);
2760 }
2761 iwl_send_beacon_cmd(priv);
2762
2763 /* FIXME - we need to add code here to detect a totally new
2764 * configuration, reset the AP, unassoc, rxon timing, assoc,
2765 * clear sta table, add BCAST sta... */
2766 }
2767
2768
2769 static int iwl_mac_config_interface(struct ieee80211_hw *hw,
2770 struct ieee80211_vif *vif,
2771 struct ieee80211_if_conf *conf)
2772 {
2773 struct iwl_priv *priv = hw->priv;
2774 int rc;
2775
2776 if (conf == NULL)
2777 return -EIO;
2778
2779 if (priv->vif != vif) {
2780 IWL_DEBUG_MAC80211("leave - priv->vif != vif\n");
2781 return 0;
2782 }
2783
2784 if (priv->iw_mode == NL80211_IFTYPE_ADHOC &&
2785 conf->changed & IEEE80211_IFCC_BEACON) {
2786 struct sk_buff *beacon = ieee80211_beacon_get(hw, vif);
2787 if (!beacon)
2788 return -ENOMEM;
2789 mutex_lock(&priv->mutex);
2790 rc = iwl_mac_beacon_update(hw, beacon);
2791 mutex_unlock(&priv->mutex);
2792 if (rc)
2793 return rc;
2794 }
2795
2796 if (!iwl_is_alive(priv))
2797 return -EAGAIN;
2798
2799 mutex_lock(&priv->mutex);
2800
2801 if (conf->bssid)
2802 IWL_DEBUG_MAC80211("bssid: %pM\n", conf->bssid);
2803
2804 /*
2805 * very dubious code was here; the probe filtering flag is never set:
2806 *
2807 if (unlikely(test_bit(STATUS_SCANNING, &priv->status)) &&
2808 !(priv->hw->flags & IEEE80211_HW_NO_PROBE_FILTERING)) {
2809 */
2810
2811 if (priv->iw_mode == NL80211_IFTYPE_AP) {
2812 if (!conf->bssid) {
2813 conf->bssid = priv->mac_addr;
2814 memcpy(priv->bssid, priv->mac_addr, ETH_ALEN);
2815 IWL_DEBUG_MAC80211("bssid was set to: %pM\n",
2816 conf->bssid);
2817 }
2818 if (priv->ibss_beacon)
2819 dev_kfree_skb(priv->ibss_beacon);
2820
2821 priv->ibss_beacon = ieee80211_beacon_get(hw, vif);
2822 }
2823
2824 if (iwl_is_rfkill(priv))
2825 goto done;
2826
2827 if (conf->bssid && !is_zero_ether_addr(conf->bssid) &&
2828 !is_multicast_ether_addr(conf->bssid)) {
2829 /* If there is currently a HW scan going on in the background
2830 * then we need to cancel it else the RXON below will fail. */
2831 if (iwl_scan_cancel_timeout(priv, 100)) {
2832 IWL_WARNING("Aborted scan still in progress "
2833 "after 100ms\n");
2834 IWL_DEBUG_MAC80211("leaving - scan abort failed.\n");
2835 mutex_unlock(&priv->mutex);
2836 return -EAGAIN;
2837 }
2838 memcpy(priv->staging_rxon.bssid_addr, conf->bssid, ETH_ALEN);
2839
2840 /* TODO: Audit driver for usage of these members and see
2841 * if mac80211 deprecates them (priv->bssid looks like it
2842 * shouldn't be there, but I haven't scanned the IBSS code
2843 * to verify) - jpk */
2844 memcpy(priv->bssid, conf->bssid, ETH_ALEN);
2845
2846 if (priv->iw_mode == NL80211_IFTYPE_AP)
2847 iwl_config_ap(priv);
2848 else {
2849 rc = iwl_commit_rxon(priv);
2850 if ((priv->iw_mode == NL80211_IFTYPE_STATION) && rc)
2851 iwl_rxon_add_station(
2852 priv, priv->active_rxon.bssid_addr, 1);
2853 }
2854
2855 } else {
2856 iwl_scan_cancel_timeout(priv, 100);
2857 priv->staging_rxon.filter_flags &= ~RXON_FILTER_ASSOC_MSK;
2858 iwl_commit_rxon(priv);
2859 }
2860
2861 done:
2862 IWL_DEBUG_MAC80211("leave\n");
2863 mutex_unlock(&priv->mutex);
2864
2865 return 0;
2866 }
2867
2868 static void iwl_configure_filter(struct ieee80211_hw *hw,
2869 unsigned int changed_flags,
2870 unsigned int *total_flags,
2871 int mc_count, struct dev_addr_list *mc_list)
2872 {
2873 struct iwl_priv *priv = hw->priv;
2874 __le32 *filter_flags = &priv->staging_rxon.filter_flags;
2875
2876 IWL_DEBUG_MAC80211("Enter: changed: 0x%x, total: 0x%x\n",
2877 changed_flags, *total_flags);
2878
2879 if (changed_flags & (FIF_OTHER_BSS | FIF_PROMISC_IN_BSS)) {
2880 if (*total_flags & (FIF_OTHER_BSS | FIF_PROMISC_IN_BSS))
2881 *filter_flags |= RXON_FILTER_PROMISC_MSK;
2882 else
2883 *filter_flags &= ~RXON_FILTER_PROMISC_MSK;
2884 }
2885 if (changed_flags & FIF_ALLMULTI) {
2886 if (*total_flags & FIF_ALLMULTI)
2887 *filter_flags |= RXON_FILTER_ACCEPT_GRP_MSK;
2888 else
2889 *filter_flags &= ~RXON_FILTER_ACCEPT_GRP_MSK;
2890 }
2891 if (changed_flags & FIF_CONTROL) {
2892 if (*total_flags & FIF_CONTROL)
2893 *filter_flags |= RXON_FILTER_CTL2HOST_MSK;
2894 else
2895 *filter_flags &= ~RXON_FILTER_CTL2HOST_MSK;
2896 }
2897 if (changed_flags & FIF_BCN_PRBRESP_PROMISC) {
2898 if (*total_flags & FIF_BCN_PRBRESP_PROMISC)
2899 *filter_flags |= RXON_FILTER_BCON_AWARE_MSK;
2900 else
2901 *filter_flags &= ~RXON_FILTER_BCON_AWARE_MSK;
2902 }
2903
2904 /* We avoid iwl_commit_rxon here to commit the new filter flags
2905 * since mac80211 will call ieee80211_hw_config immediately.
2906 * (mc_list is not supported at this time). Otherwise, we need to
2907 * queue a background iwl_commit_rxon work.
2908 */
2909
2910 *total_flags &= FIF_OTHER_BSS | FIF_ALLMULTI | FIF_PROMISC_IN_BSS |
2911 FIF_BCN_PRBRESP_PROMISC | FIF_CONTROL;
2912 }
2913
2914 static void iwl_mac_remove_interface(struct ieee80211_hw *hw,
2915 struct ieee80211_if_init_conf *conf)
2916 {
2917 struct iwl_priv *priv = hw->priv;
2918
2919 IWL_DEBUG_MAC80211("enter\n");
2920
2921 mutex_lock(&priv->mutex);
2922
2923 if (iwl_is_ready_rf(priv)) {
2924 iwl_scan_cancel_timeout(priv, 100);
2925 priv->staging_rxon.filter_flags &= ~RXON_FILTER_ASSOC_MSK;
2926 iwl_commit_rxon(priv);
2927 }
2928 if (priv->vif == conf->vif) {
2929 priv->vif = NULL;
2930 memset(priv->bssid, 0, ETH_ALEN);
2931 }
2932 mutex_unlock(&priv->mutex);
2933
2934 IWL_DEBUG_MAC80211("leave\n");
2935
2936 }
2937
2938 #define IWL_DELAY_NEXT_SCAN_AFTER_ASSOC (HZ*6)
2939 static void iwl_bss_info_changed(struct ieee80211_hw *hw,
2940 struct ieee80211_vif *vif,
2941 struct ieee80211_bss_conf *bss_conf,
2942 u32 changes)
2943 {
2944 struct iwl_priv *priv = hw->priv;
2945
2946 IWL_DEBUG_MAC80211("changes = 0x%X\n", changes);
2947
2948 if (changes & BSS_CHANGED_ERP_PREAMBLE) {
2949 IWL_DEBUG_MAC80211("ERP_PREAMBLE %d\n",
2950 bss_conf->use_short_preamble);
2951 if (bss_conf->use_short_preamble)
2952 priv->staging_rxon.flags |= RXON_FLG_SHORT_PREAMBLE_MSK;
2953 else
2954 priv->staging_rxon.flags &= ~RXON_FLG_SHORT_PREAMBLE_MSK;
2955 }
2956
2957 if (changes & BSS_CHANGED_ERP_CTS_PROT) {
2958 IWL_DEBUG_MAC80211("ERP_CTS %d\n", bss_conf->use_cts_prot);
2959 if (bss_conf->use_cts_prot && (priv->band != IEEE80211_BAND_5GHZ))
2960 priv->staging_rxon.flags |= RXON_FLG_TGG_PROTECT_MSK;
2961 else
2962 priv->staging_rxon.flags &= ~RXON_FLG_TGG_PROTECT_MSK;
2963 }
2964
2965 if (changes & BSS_CHANGED_HT) {
2966 iwl_ht_conf(priv, bss_conf);
2967 iwl_set_rxon_chain(priv);
2968 }
2969
2970 if (changes & BSS_CHANGED_ASSOC) {
2971 IWL_DEBUG_MAC80211("ASSOC %d\n", bss_conf->assoc);
2972 /* This should never happen as this function should
2973 * never be called from interrupt context. */
2974 if (WARN_ON_ONCE(in_interrupt()))
2975 return;
2976 if (bss_conf->assoc) {
2977 priv->assoc_id = bss_conf->aid;
2978 priv->beacon_int = bss_conf->beacon_int;
2979 priv->power_data.dtim_period = bss_conf->dtim_period;
2980 priv->timestamp = bss_conf->timestamp;
2981 priv->assoc_capability = bss_conf->assoc_capability;
2982
2983 /* we have just associated, don't start scan too early
2984 * leave time for EAPOL exchange to complete
2985 */
2986 priv->next_scan_jiffies = jiffies +
2987 IWL_DELAY_NEXT_SCAN_AFTER_ASSOC;
2988 mutex_lock(&priv->mutex);
2989 iwl_post_associate(priv);
2990 mutex_unlock(&priv->mutex);
2991 } else {
2992 priv->assoc_id = 0;
2993 IWL_DEBUG_MAC80211("DISASSOC %d\n", bss_conf->assoc);
2994 }
2995 } else if (changes && iwl_is_associated(priv) && priv->assoc_id) {
2996 IWL_DEBUG_MAC80211("Associated Changes %d\n", changes);
2997 iwl_send_rxon_assoc(priv);
2998 }
2999
3000 }
3001
3002 static int iwl_mac_hw_scan(struct ieee80211_hw *hw, u8 *ssid, size_t ssid_len)
3003 {
3004 unsigned long flags;
3005 struct iwl_priv *priv = hw->priv;
3006 int ret;
3007
3008 IWL_DEBUG_MAC80211("enter\n");
3009
3010 mutex_lock(&priv->mutex);
3011 spin_lock_irqsave(&priv->lock, flags);
3012
3013 if (!iwl_is_ready_rf(priv)) {
3014 ret = -EIO;
3015 IWL_DEBUG_MAC80211("leave - not ready or exit pending\n");
3016 goto out_unlock;
3017 }
3018
3019 if (priv->iw_mode == NL80211_IFTYPE_AP) { /* APs don't scan */
3020 ret = -EIO;
3021 IWL_ERROR("ERROR: APs don't scan\n");
3022 goto out_unlock;
3023 }
3024
3025 /* We don't schedule scan within next_scan_jiffies period.
3026 * Avoid scanning during possible EAPOL exchange, return
3027 * success immediately.
3028 */
3029 if (priv->next_scan_jiffies &&
3030 time_after(priv->next_scan_jiffies, jiffies)) {
3031 IWL_DEBUG_SCAN("scan rejected: within next scan period\n");
3032 queue_work(priv->workqueue, &priv->scan_completed);
3033 ret = 0;
3034 goto out_unlock;
3035 }
3036
3037 /* if we just finished scan ask for delay */
3038 if (iwl_is_associated(priv) && priv->last_scan_jiffies &&
3039 time_after(priv->last_scan_jiffies + IWL_DELAY_NEXT_SCAN, jiffies)) {
3040 IWL_DEBUG_SCAN("scan rejected: within previous scan period\n");
3041 queue_work(priv->workqueue, &priv->scan_completed);
3042 ret = 0;
3043 goto out_unlock;
3044 }
3045
3046 if (ssid_len) {
3047 priv->one_direct_scan = 1;
3048 priv->direct_ssid_len = min_t(u8, ssid_len, IW_ESSID_MAX_SIZE);
3049 memcpy(priv->direct_ssid, ssid, priv->direct_ssid_len);
3050 } else {
3051 priv->one_direct_scan = 0;
3052 }
3053
3054 ret = iwl_scan_initiate(priv);
3055
3056 IWL_DEBUG_MAC80211("leave\n");
3057
3058 out_unlock:
3059 spin_unlock_irqrestore(&priv->lock, flags);
3060 mutex_unlock(&priv->mutex);
3061
3062 return ret;
3063 }
3064
3065 static void iwl_mac_update_tkip_key(struct ieee80211_hw *hw,
3066 struct ieee80211_key_conf *keyconf, const u8 *addr,
3067 u32 iv32, u16 *phase1key)
3068 {
3069
3070 struct iwl_priv *priv = hw->priv;
3071 IWL_DEBUG_MAC80211("enter\n");
3072
3073 iwl_update_tkip_key(priv, keyconf, addr, iv32, phase1key);
3074
3075 IWL_DEBUG_MAC80211("leave\n");
3076 }
3077
3078 static int iwl_mac_set_key(struct ieee80211_hw *hw, enum set_key_cmd cmd,
3079 const u8 *local_addr, const u8 *addr,
3080 struct ieee80211_key_conf *key)
3081 {
3082 struct iwl_priv *priv = hw->priv;
3083 int ret = 0;
3084 u8 sta_id = IWL_INVALID_STATION;
3085 u8 is_default_wep_key = 0;
3086
3087 IWL_DEBUG_MAC80211("enter\n");
3088
3089 if (priv->hw_params.sw_crypto) {
3090 IWL_DEBUG_MAC80211("leave - hwcrypto disabled\n");
3091 return -EOPNOTSUPP;
3092 }
3093
3094 if (is_zero_ether_addr(addr))
3095 /* only support pairwise keys */
3096 return -EOPNOTSUPP;
3097
3098 sta_id = iwl_find_station(priv, addr);
3099 if (sta_id == IWL_INVALID_STATION) {
3100 IWL_DEBUG_MAC80211("leave - %pM not in station map.\n",
3101 addr);
3102 return -EINVAL;
3103
3104 }
3105
3106 mutex_lock(&priv->mutex);
3107 iwl_scan_cancel_timeout(priv, 100);
3108 mutex_unlock(&priv->mutex);
3109
3110 /* If we are getting WEP group key and we didn't receive any key mapping
3111 * so far, we are in legacy wep mode (group key only), otherwise we are
3112 * in 1X mode.
3113 * In legacy wep mode, we use another host command to the uCode */
3114 if (key->alg == ALG_WEP && sta_id == priv->hw_params.bcast_sta_id &&
3115 priv->iw_mode != NL80211_IFTYPE_AP) {
3116 if (cmd == SET_KEY)
3117 is_default_wep_key = !priv->key_mapping_key;
3118 else
3119 is_default_wep_key =
3120 (key->hw_key_idx == HW_KEY_DEFAULT);
3121 }
3122
3123 switch (cmd) {
3124 case SET_KEY:
3125 if (is_default_wep_key)
3126 ret = iwl_set_default_wep_key(priv, key);
3127 else
3128 ret = iwl_set_dynamic_key(priv, key, sta_id);
3129
3130 IWL_DEBUG_MAC80211("enable hwcrypto key\n");
3131 break;
3132 case DISABLE_KEY:
3133 if (is_default_wep_key)
3134 ret = iwl_remove_default_wep_key(priv, key);
3135 else
3136 ret = iwl_remove_dynamic_key(priv, key, sta_id);
3137
3138 IWL_DEBUG_MAC80211("disable hwcrypto key\n");
3139 break;
3140 default:
3141 ret = -EINVAL;
3142 }
3143
3144 IWL_DEBUG_MAC80211("leave\n");
3145
3146 return ret;
3147 }
3148
3149 static int iwl_mac_conf_tx(struct ieee80211_hw *hw, u16 queue,
3150 const struct ieee80211_tx_queue_params *params)
3151 {
3152 struct iwl_priv *priv = hw->priv;
3153 unsigned long flags;
3154 int q;
3155
3156 IWL_DEBUG_MAC80211("enter\n");
3157
3158 if (!iwl_is_ready_rf(priv)) {
3159 IWL_DEBUG_MAC80211("leave - RF not ready\n");
3160 return -EIO;
3161 }
3162
3163 if (queue >= AC_NUM) {
3164 IWL_DEBUG_MAC80211("leave - queue >= AC_NUM %d\n", queue);
3165 return 0;
3166 }
3167
3168 if (!priv->qos_data.qos_enable) {
3169 priv->qos_data.qos_active = 0;
3170 IWL_DEBUG_MAC80211("leave - qos not enabled\n");
3171 return 0;
3172 }
3173 q = AC_NUM - 1 - queue;
3174
3175 spin_lock_irqsave(&priv->lock, flags);
3176
3177 priv->qos_data.def_qos_parm.ac[q].cw_min = cpu_to_le16(params->cw_min);
3178 priv->qos_data.def_qos_parm.ac[q].cw_max = cpu_to_le16(params->cw_max);
3179 priv->qos_data.def_qos_parm.ac[q].aifsn = params->aifs;
3180 priv->qos_data.def_qos_parm.ac[q].edca_txop =
3181 cpu_to_le16((params->txop * 32));
3182
3183 priv->qos_data.def_qos_parm.ac[q].reserved1 = 0;
3184 priv->qos_data.qos_active = 1;
3185
3186 if (priv->iw_mode == NL80211_IFTYPE_AP)
3187 iwl_activate_qos(priv, 1);
3188 else if (priv->assoc_id && iwl_is_associated(priv))
3189 iwl_activate_qos(priv, 0);
3190
3191 spin_unlock_irqrestore(&priv->lock, flags);
3192
3193 IWL_DEBUG_MAC80211("leave\n");
3194 return 0;
3195 }
3196
3197 static int iwl_mac_ampdu_action(struct ieee80211_hw *hw,
3198 enum ieee80211_ampdu_mlme_action action,
3199 struct ieee80211_sta *sta, u16 tid, u16 *ssn)
3200 {
3201 struct iwl_priv *priv = hw->priv;
3202
3203 IWL_DEBUG_HT("A-MPDU action on addr %pM tid %d\n",
3204 sta->addr, tid);
3205
3206 if (!(priv->cfg->sku & IWL_SKU_N))
3207 return -EACCES;
3208
3209 switch (action) {
3210 case IEEE80211_AMPDU_RX_START:
3211 IWL_DEBUG_HT("start Rx\n");
3212 return iwl_sta_rx_agg_start(priv, sta->addr, tid, *ssn);
3213 case IEEE80211_AMPDU_RX_STOP:
3214 IWL_DEBUG_HT("stop Rx\n");
3215 return iwl_sta_rx_agg_stop(priv, sta->addr, tid);
3216 case IEEE80211_AMPDU_TX_START:
3217 IWL_DEBUG_HT("start Tx\n");
3218 return iwl_tx_agg_start(priv, sta->addr, tid, ssn);
3219 case IEEE80211_AMPDU_TX_STOP:
3220 IWL_DEBUG_HT("stop Tx\n");
3221 return iwl_tx_agg_stop(priv, sta->addr, tid);
3222 default:
3223 IWL_DEBUG_HT("unknown\n");
3224 return -EINVAL;
3225 break;
3226 }
3227 return 0;
3228 }
3229
3230 static int iwl_mac_get_tx_stats(struct ieee80211_hw *hw,
3231 struct ieee80211_tx_queue_stats *stats)
3232 {
3233 struct iwl_priv *priv = hw->priv;
3234 int i, avail;
3235 struct iwl_tx_queue *txq;
3236 struct iwl_queue *q;
3237 unsigned long flags;
3238
3239 IWL_DEBUG_MAC80211("enter\n");
3240
3241 if (!iwl_is_ready_rf(priv)) {
3242 IWL_DEBUG_MAC80211("leave - RF not ready\n");
3243 return -EIO;
3244 }
3245
3246 spin_lock_irqsave(&priv->lock, flags);
3247
3248 for (i = 0; i < AC_NUM; i++) {
3249 txq = &priv->txq[i];
3250 q = &txq->q;
3251 avail = iwl_queue_space(q);
3252
3253 stats[i].len = q->n_window - avail;
3254 stats[i].limit = q->n_window - q->high_mark;
3255 stats[i].count = q->n_window;
3256
3257 }
3258 spin_unlock_irqrestore(&priv->lock, flags);
3259
3260 IWL_DEBUG_MAC80211("leave\n");
3261
3262 return 0;
3263 }
3264
3265 static int iwl_mac_get_stats(struct ieee80211_hw *hw,
3266 struct ieee80211_low_level_stats *stats)
3267 {
3268 struct iwl_priv *priv = hw->priv;
3269
3270 priv = hw->priv;
3271 IWL_DEBUG_MAC80211("enter\n");
3272 IWL_DEBUG_MAC80211("leave\n");
3273
3274 return 0;
3275 }
3276
3277 static void iwl_mac_reset_tsf(struct ieee80211_hw *hw)
3278 {
3279 struct iwl_priv *priv = hw->priv;
3280 unsigned long flags;
3281
3282 mutex_lock(&priv->mutex);
3283 IWL_DEBUG_MAC80211("enter\n");
3284
3285 spin_lock_irqsave(&priv->lock, flags);
3286 memset(&priv->current_ht_config, 0, sizeof(struct iwl_ht_info));
3287 spin_unlock_irqrestore(&priv->lock, flags);
3288
3289 iwl_reset_qos(priv);
3290
3291 spin_lock_irqsave(&priv->lock, flags);
3292 priv->assoc_id = 0;
3293 priv->assoc_capability = 0;
3294 priv->assoc_station_added = 0;
3295
3296 /* new association get rid of ibss beacon skb */
3297 if (priv->ibss_beacon)
3298 dev_kfree_skb(priv->ibss_beacon);
3299
3300 priv->ibss_beacon = NULL;
3301
3302 priv->beacon_int = priv->hw->conf.beacon_int;
3303 priv->timestamp = 0;
3304 if ((priv->iw_mode == NL80211_IFTYPE_STATION))
3305 priv->beacon_int = 0;
3306
3307 spin_unlock_irqrestore(&priv->lock, flags);
3308
3309 if (!iwl_is_ready_rf(priv)) {
3310 IWL_DEBUG_MAC80211("leave - not ready\n");
3311 mutex_unlock(&priv->mutex);
3312 return;
3313 }
3314
3315 /* we are restarting association process
3316 * clear RXON_FILTER_ASSOC_MSK bit
3317 */
3318 if (priv->iw_mode != NL80211_IFTYPE_AP) {
3319 iwl_scan_cancel_timeout(priv, 100);
3320 priv->staging_rxon.filter_flags &= ~RXON_FILTER_ASSOC_MSK;
3321 iwl_commit_rxon(priv);
3322 }
3323
3324 iwl_power_update_mode(priv, 0);
3325
3326 /* Per mac80211.h: This is only used in IBSS mode... */
3327 if (priv->iw_mode != NL80211_IFTYPE_ADHOC) {
3328
3329 /* switch to CAM during association period.
3330 * the ucode will block any association/authentication
3331 * frome during assiciation period if it can not hear
3332 * the AP because of PM. the timer enable PM back is
3333 * association do not complete
3334 */
3335 if (priv->hw->conf.channel->flags & (IEEE80211_CHAN_PASSIVE_SCAN |
3336 IEEE80211_CHAN_RADAR))
3337 iwl_power_disable_management(priv, 3000);
3338
3339 IWL_DEBUG_MAC80211("leave - not in IBSS\n");
3340 mutex_unlock(&priv->mutex);
3341 return;
3342 }
3343
3344 iwl_set_rate(priv);
3345
3346 mutex_unlock(&priv->mutex);
3347
3348 IWL_DEBUG_MAC80211("leave\n");
3349 }
3350
3351 static int iwl_mac_beacon_update(struct ieee80211_hw *hw, struct sk_buff *skb)
3352 {
3353 struct iwl_priv *priv = hw->priv;
3354 unsigned long flags;
3355 __le64 timestamp;
3356
3357 IWL_DEBUG_MAC80211("enter\n");
3358
3359 if (!iwl_is_ready_rf(priv)) {
3360 IWL_DEBUG_MAC80211("leave - RF not ready\n");
3361 return -EIO;
3362 }
3363
3364 if (priv->iw_mode != NL80211_IFTYPE_ADHOC) {
3365 IWL_DEBUG_MAC80211("leave - not IBSS\n");
3366 return -EIO;
3367 }
3368
3369 spin_lock_irqsave(&priv->lock, flags);
3370
3371 if (priv->ibss_beacon)
3372 dev_kfree_skb(priv->ibss_beacon);
3373
3374 priv->ibss_beacon = skb;
3375
3376 priv->assoc_id = 0;
3377 timestamp = ((struct ieee80211_mgmt *)skb->data)->u.beacon.timestamp;
3378 priv->timestamp = le64_to_cpu(timestamp);
3379
3380 IWL_DEBUG_MAC80211("leave\n");
3381 spin_unlock_irqrestore(&priv->lock, flags);
3382
3383 iwl_reset_qos(priv);
3384
3385 iwl_post_associate(priv);
3386
3387
3388 return 0;
3389 }
3390
3391 /*****************************************************************************
3392 *
3393 * sysfs attributes
3394 *
3395 *****************************************************************************/
3396
3397 #ifdef CONFIG_IWLWIFI_DEBUG
3398
3399 /*
3400 * The following adds a new attribute to the sysfs representation
3401 * of this device driver (i.e. a new file in /sys/bus/pci/drivers/iwl/)
3402 * used for controlling the debug level.
3403 *
3404 * See the level definitions in iwl for details.
3405 */
3406
3407 static ssize_t show_debug_level(struct device *d,
3408 struct device_attribute *attr, char *buf)
3409 {
3410 struct iwl_priv *priv = d->driver_data;
3411
3412 return sprintf(buf, "0x%08X\n", priv->debug_level);
3413 }
3414 static ssize_t store_debug_level(struct device *d,
3415 struct device_attribute *attr,
3416 const char *buf, size_t count)
3417 {
3418 struct iwl_priv *priv = d->driver_data;
3419 unsigned long val;
3420 int ret;
3421
3422 ret = strict_strtoul(buf, 0, &val);
3423 if (ret)
3424 printk(KERN_INFO DRV_NAME
3425 ": %s is not in hex or decimal form.\n", buf);
3426 else
3427 priv->debug_level = val;
3428
3429 return strnlen(buf, count);
3430 }
3431
3432 static DEVICE_ATTR(debug_level, S_IWUSR | S_IRUGO,
3433 show_debug_level, store_debug_level);
3434
3435
3436 #endif /* CONFIG_IWLWIFI_DEBUG */
3437
3438
3439 static ssize_t show_version(struct device *d,
3440 struct device_attribute *attr, char *buf)
3441 {
3442 struct iwl_priv *priv = d->driver_data;
3443 struct iwl_alive_resp *palive = &priv->card_alive;
3444 ssize_t pos = 0;
3445 u16 eeprom_ver;
3446
3447 if (palive->is_valid)
3448 pos += sprintf(buf + pos,
3449 "fw version: 0x%01X.0x%01X.0x%01X.0x%01X\n"
3450 "fw type: 0x%01X 0x%01X\n",
3451 palive->ucode_major, palive->ucode_minor,
3452 palive->sw_rev[0], palive->sw_rev[1],
3453 palive->ver_type, palive->ver_subtype);
3454 else
3455 pos += sprintf(buf + pos, "fw not loaded\n");
3456
3457 if (priv->eeprom) {
3458 eeprom_ver = iwl_eeprom_query16(priv, EEPROM_VERSION);
3459 pos += sprintf(buf + pos, "EEPROM version: 0x%x\n",
3460 eeprom_ver);
3461 } else {
3462 pos += sprintf(buf + pos, "EEPROM not initialzed\n");
3463 }
3464
3465 return pos;
3466 }
3467
3468 static DEVICE_ATTR(version, S_IWUSR | S_IRUGO, show_version, NULL);
3469
3470 static ssize_t show_temperature(struct device *d,
3471 struct device_attribute *attr, char *buf)
3472 {
3473 struct iwl_priv *priv = (struct iwl_priv *)d->driver_data;
3474
3475 if (!iwl_is_alive(priv))
3476 return -EAGAIN;
3477
3478 return sprintf(buf, "%d\n", priv->temperature);
3479 }
3480
3481 static DEVICE_ATTR(temperature, S_IRUGO, show_temperature, NULL);
3482
3483 static ssize_t show_tx_power(struct device *d,
3484 struct device_attribute *attr, char *buf)
3485 {
3486 struct iwl_priv *priv = (struct iwl_priv *)d->driver_data;
3487 return sprintf(buf, "%d\n", priv->tx_power_user_lmt);
3488 }
3489
3490 static ssize_t store_tx_power(struct device *d,
3491 struct device_attribute *attr,
3492 const char *buf, size_t count)
3493 {
3494 struct iwl_priv *priv = (struct iwl_priv *)d->driver_data;
3495 unsigned long val;
3496 int ret;
3497
3498 ret = strict_strtoul(buf, 10, &val);
3499 if (ret)
3500 printk(KERN_INFO DRV_NAME
3501 ": %s is not in decimal form.\n", buf);
3502 else
3503 iwl_set_tx_power(priv, val, false);
3504
3505 return count;
3506 }
3507
3508 static DEVICE_ATTR(tx_power, S_IWUSR | S_IRUGO, show_tx_power, store_tx_power);
3509
3510 static ssize_t show_flags(struct device *d,
3511 struct device_attribute *attr, char *buf)
3512 {
3513 struct iwl_priv *priv = (struct iwl_priv *)d->driver_data;
3514
3515 return sprintf(buf, "0x%04X\n", priv->active_rxon.flags);
3516 }
3517
3518 static ssize_t store_flags(struct device *d,
3519 struct device_attribute *attr,
3520 const char *buf, size_t count)
3521 {
3522 struct iwl_priv *priv = (struct iwl_priv *)d->driver_data;
3523 unsigned long val;
3524 u32 flags;
3525 int ret = strict_strtoul(buf, 0, &val);
3526 if (ret)
3527 return ret;
3528 flags = (u32)val;
3529
3530 mutex_lock(&priv->mutex);
3531 if (le32_to_cpu(priv->staging_rxon.flags) != flags) {
3532 /* Cancel any currently running scans... */
3533 if (iwl_scan_cancel_timeout(priv, 100))
3534 IWL_WARNING("Could not cancel scan.\n");
3535 else {
3536 IWL_DEBUG_INFO("Commit rxon.flags = 0x%04X\n", flags);
3537 priv->staging_rxon.flags = cpu_to_le32(flags);
3538 iwl_commit_rxon(priv);
3539 }
3540 }
3541 mutex_unlock(&priv->mutex);
3542
3543 return count;
3544 }
3545
3546 static DEVICE_ATTR(flags, S_IWUSR | S_IRUGO, show_flags, store_flags);
3547
3548 static ssize_t show_filter_flags(struct device *d,
3549 struct device_attribute *attr, char *buf)
3550 {
3551 struct iwl_priv *priv = (struct iwl_priv *)d->driver_data;
3552
3553 return sprintf(buf, "0x%04X\n",
3554 le32_to_cpu(priv->active_rxon.filter_flags));
3555 }
3556
3557 static ssize_t store_filter_flags(struct device *d,
3558 struct device_attribute *attr,
3559 const char *buf, size_t count)
3560 {
3561 struct iwl_priv *priv = (struct iwl_priv *)d->driver_data;
3562 unsigned long val;
3563 u32 filter_flags;
3564 int ret = strict_strtoul(buf, 0, &val);
3565 if (ret)
3566 return ret;
3567 filter_flags = (u32)val;
3568
3569 mutex_lock(&priv->mutex);
3570 if (le32_to_cpu(priv->staging_rxon.filter_flags) != filter_flags) {
3571 /* Cancel any currently running scans... */
3572 if (iwl_scan_cancel_timeout(priv, 100))
3573 IWL_WARNING("Could not cancel scan.\n");
3574 else {
3575 IWL_DEBUG_INFO("Committing rxon.filter_flags = "
3576 "0x%04X\n", filter_flags);
3577 priv->staging_rxon.filter_flags =
3578 cpu_to_le32(filter_flags);
3579 iwl_commit_rxon(priv);
3580 }
3581 }
3582 mutex_unlock(&priv->mutex);
3583
3584 return count;
3585 }
3586
3587 static DEVICE_ATTR(filter_flags, S_IWUSR | S_IRUGO, show_filter_flags,
3588 store_filter_flags);
3589
3590 static ssize_t store_retry_rate(struct device *d,
3591 struct device_attribute *attr,
3592 const char *buf, size_t count)
3593 {
3594 struct iwl_priv *priv = dev_get_drvdata(d);
3595 long val;
3596 int ret = strict_strtol(buf, 10, &val);
3597 if (!ret)
3598 return ret;
3599
3600 priv->retry_rate = (val > 0) ? val : 1;
3601
3602 return count;
3603 }
3604
3605 static ssize_t show_retry_rate(struct device *d,
3606 struct device_attribute *attr, char *buf)
3607 {
3608 struct iwl_priv *priv = dev_get_drvdata(d);
3609 return sprintf(buf, "%d", priv->retry_rate);
3610 }
3611
3612 static DEVICE_ATTR(retry_rate, S_IWUSR | S_IRUSR, show_retry_rate,
3613 store_retry_rate);
3614
3615 static ssize_t store_power_level(struct device *d,
3616 struct device_attribute *attr,
3617 const char *buf, size_t count)
3618 {
3619 struct iwl_priv *priv = dev_get_drvdata(d);
3620 int ret;
3621 unsigned long mode;
3622
3623
3624 mutex_lock(&priv->mutex);
3625
3626 if (!iwl_is_ready(priv)) {
3627 ret = -EAGAIN;
3628 goto out;
3629 }
3630
3631 ret = strict_strtoul(buf, 10, &mode);
3632 if (ret)
3633 goto out;
3634
3635 ret = iwl_power_set_user_mode(priv, mode);
3636 if (ret) {
3637 IWL_DEBUG_MAC80211("failed setting power mode.\n");
3638 goto out;
3639 }
3640 ret = count;
3641
3642 out:
3643 mutex_unlock(&priv->mutex);
3644 return ret;
3645 }
3646
3647 static ssize_t show_power_level(struct device *d,
3648 struct device_attribute *attr, char *buf)
3649 {
3650 struct iwl_priv *priv = dev_get_drvdata(d);
3651 int mode = priv->power_data.user_power_setting;
3652 int system = priv->power_data.system_power_setting;
3653 int level = priv->power_data.power_mode;
3654 char *p = buf;
3655
3656 switch (system) {
3657 case IWL_POWER_SYS_AUTO:
3658 p += sprintf(p, "SYSTEM:auto");
3659 break;
3660 case IWL_POWER_SYS_AC:
3661 p += sprintf(p, "SYSTEM:ac");
3662 break;
3663 case IWL_POWER_SYS_BATTERY:
3664 p += sprintf(p, "SYSTEM:battery");
3665 break;
3666 }
3667
3668 p += sprintf(p, "\tMODE:%s", (mode < IWL_POWER_AUTO) ?
3669 "fixed" : "auto");
3670 p += sprintf(p, "\tINDEX:%d", level);
3671 p += sprintf(p, "\n");
3672 return p - buf + 1;
3673 }
3674
3675 static DEVICE_ATTR(power_level, S_IWUSR | S_IRUSR, show_power_level,
3676 store_power_level);
3677
3678 static ssize_t show_channels(struct device *d,
3679 struct device_attribute *attr, char *buf)
3680 {
3681
3682 struct iwl_priv *priv = dev_get_drvdata(d);
3683 struct ieee80211_channel *channels = NULL;
3684 const struct ieee80211_supported_band *supp_band = NULL;
3685 int len = 0, i;
3686 int count = 0;
3687
3688 if (!test_bit(STATUS_GEO_CONFIGURED, &priv->status))
3689 return -EAGAIN;
3690
3691 supp_band = iwl_get_hw_mode(priv, IEEE80211_BAND_2GHZ);
3692 channels = supp_band->channels;
3693 count = supp_band->n_channels;
3694
3695 len += sprintf(&buf[len],
3696 "Displaying %d channels in 2.4GHz band "
3697 "(802.11bg):\n", count);
3698
3699 for (i = 0; i < count; i++)
3700 len += sprintf(&buf[len], "%d: %ddBm: BSS%s%s, %s.\n",
3701 ieee80211_frequency_to_channel(
3702 channels[i].center_freq),
3703 channels[i].max_power,
3704 channels[i].flags & IEEE80211_CHAN_RADAR ?
3705 " (IEEE 802.11h required)" : "",
3706 (!(channels[i].flags & IEEE80211_CHAN_NO_IBSS)
3707 || (channels[i].flags &
3708 IEEE80211_CHAN_RADAR)) ? "" :
3709 ", IBSS",
3710 channels[i].flags &
3711 IEEE80211_CHAN_PASSIVE_SCAN ?
3712 "passive only" : "active/passive");
3713
3714 supp_band = iwl_get_hw_mode(priv, IEEE80211_BAND_5GHZ);
3715 channels = supp_band->channels;
3716 count = supp_band->n_channels;
3717
3718 len += sprintf(&buf[len], "Displaying %d channels in 5.2GHz band "
3719 "(802.11a):\n", count);
3720
3721 for (i = 0; i < count; i++)
3722 len += sprintf(&buf[len], "%d: %ddBm: BSS%s%s, %s.\n",
3723 ieee80211_frequency_to_channel(
3724 channels[i].center_freq),
3725 channels[i].max_power,
3726 channels[i].flags & IEEE80211_CHAN_RADAR ?
3727 " (IEEE 802.11h required)" : "",
3728 ((channels[i].flags & IEEE80211_CHAN_NO_IBSS)
3729 || (channels[i].flags &
3730 IEEE80211_CHAN_RADAR)) ? "" :
3731 ", IBSS",
3732 channels[i].flags &
3733 IEEE80211_CHAN_PASSIVE_SCAN ?
3734 "passive only" : "active/passive");
3735
3736 return len;
3737 }
3738
3739 static DEVICE_ATTR(channels, S_IRUSR, show_channels, NULL);
3740
3741 static ssize_t show_statistics(struct device *d,
3742 struct device_attribute *attr, char *buf)
3743 {
3744 struct iwl_priv *priv = dev_get_drvdata(d);
3745 u32 size = sizeof(struct iwl_notif_statistics);
3746 u32 len = 0, ofs = 0;
3747 u8 *data = (u8 *)&priv->statistics;
3748 int rc = 0;
3749
3750 if (!iwl_is_alive(priv))
3751 return -EAGAIN;
3752
3753 mutex_lock(&priv->mutex);
3754 rc = iwl_send_statistics_request(priv, 0);
3755 mutex_unlock(&priv->mutex);
3756
3757 if (rc) {
3758 len = sprintf(buf,
3759 "Error sending statistics request: 0x%08X\n", rc);
3760 return len;
3761 }
3762
3763 while (size && (PAGE_SIZE - len)) {
3764 hex_dump_to_buffer(data + ofs, size, 16, 1, buf + len,
3765 PAGE_SIZE - len, 1);
3766 len = strlen(buf);
3767 if (PAGE_SIZE - len)
3768 buf[len++] = '\n';
3769
3770 ofs += 16;
3771 size -= min(size, 16U);
3772 }
3773
3774 return len;
3775 }
3776
3777 static DEVICE_ATTR(statistics, S_IRUGO, show_statistics, NULL);
3778
3779 static ssize_t show_status(struct device *d,
3780 struct device_attribute *attr, char *buf)
3781 {
3782 struct iwl_priv *priv = (struct iwl_priv *)d->driver_data;
3783 if (!iwl_is_alive(priv))
3784 return -EAGAIN;
3785 return sprintf(buf, "0x%08x\n", (int)priv->status);
3786 }
3787
3788 static DEVICE_ATTR(status, S_IRUGO, show_status, NULL);
3789
3790 /*****************************************************************************
3791 *
3792 * driver setup and teardown
3793 *
3794 *****************************************************************************/
3795
3796 static void iwl_setup_deferred_work(struct iwl_priv *priv)
3797 {
3798 priv->workqueue = create_workqueue(DRV_NAME);
3799
3800 init_waitqueue_head(&priv->wait_command_queue);
3801
3802 INIT_WORK(&priv->up, iwl_bg_up);
3803 INIT_WORK(&priv->restart, iwl_bg_restart);
3804 INIT_WORK(&priv->rx_replenish, iwl_bg_rx_replenish);
3805 INIT_WORK(&priv->rf_kill, iwl_bg_rf_kill);
3806 INIT_WORK(&priv->beacon_update, iwl_bg_beacon_update);
3807 INIT_WORK(&priv->run_time_calib_work, iwl_bg_run_time_calib_work);
3808 INIT_DELAYED_WORK(&priv->init_alive_start, iwl_bg_init_alive_start);
3809 INIT_DELAYED_WORK(&priv->alive_start, iwl_bg_alive_start);
3810
3811 iwl_setup_scan_deferred_work(priv);
3812 iwl_setup_power_deferred_work(priv);
3813
3814 if (priv->cfg->ops->lib->setup_deferred_work)
3815 priv->cfg->ops->lib->setup_deferred_work(priv);
3816
3817 init_timer(&priv->statistics_periodic);
3818 priv->statistics_periodic.data = (unsigned long)priv;
3819 priv->statistics_periodic.function = iwl_bg_statistics_periodic;
3820
3821 tasklet_init(&priv->irq_tasklet, (void (*)(unsigned long))
3822 iwl_irq_tasklet, (unsigned long)priv);
3823 }
3824
3825 static void iwl_cancel_deferred_work(struct iwl_priv *priv)
3826 {
3827 if (priv->cfg->ops->lib->cancel_deferred_work)
3828 priv->cfg->ops->lib->cancel_deferred_work(priv);
3829
3830 cancel_delayed_work_sync(&priv->init_alive_start);
3831 cancel_delayed_work(&priv->scan_check);
3832 cancel_delayed_work_sync(&priv->set_power_save);
3833 cancel_delayed_work(&priv->alive_start);
3834 cancel_work_sync(&priv->beacon_update);
3835 del_timer_sync(&priv->statistics_periodic);
3836 }
3837
3838 static struct attribute *iwl_sysfs_entries[] = {
3839 &dev_attr_channels.attr,
3840 &dev_attr_flags.attr,
3841 &dev_attr_filter_flags.attr,
3842 &dev_attr_power_level.attr,
3843 &dev_attr_retry_rate.attr,
3844 &dev_attr_statistics.attr,
3845 &dev_attr_status.attr,
3846 &dev_attr_temperature.attr,
3847 &dev_attr_tx_power.attr,
3848 #ifdef CONFIG_IWLWIFI_DEBUG
3849 &dev_attr_debug_level.attr,
3850 #endif
3851 &dev_attr_version.attr,
3852
3853 NULL
3854 };
3855
3856 static struct attribute_group iwl_attribute_group = {
3857 .name = NULL, /* put in device directory */
3858 .attrs = iwl_sysfs_entries,
3859 };
3860
3861 static struct ieee80211_ops iwl_hw_ops = {
3862 .tx = iwl_mac_tx,
3863 .start = iwl_mac_start,
3864 .stop = iwl_mac_stop,
3865 .add_interface = iwl_mac_add_interface,
3866 .remove_interface = iwl_mac_remove_interface,
3867 .config = iwl_mac_config,
3868 .config_interface = iwl_mac_config_interface,
3869 .configure_filter = iwl_configure_filter,
3870 .set_key = iwl_mac_set_key,
3871 .update_tkip_key = iwl_mac_update_tkip_key,
3872 .get_stats = iwl_mac_get_stats,
3873 .get_tx_stats = iwl_mac_get_tx_stats,
3874 .conf_tx = iwl_mac_conf_tx,
3875 .reset_tsf = iwl_mac_reset_tsf,
3876 .bss_info_changed = iwl_bss_info_changed,
3877 .ampdu_action = iwl_mac_ampdu_action,
3878 .hw_scan = iwl_mac_hw_scan
3879 };
3880
3881 static int iwl_pci_probe(struct pci_dev *pdev, const struct pci_device_id *ent)
3882 {
3883 int err = 0;
3884 struct iwl_priv *priv;
3885 struct ieee80211_hw *hw;
3886 struct iwl_cfg *cfg = (struct iwl_cfg *)(ent->driver_data);
3887 unsigned long flags;
3888
3889 /************************
3890 * 1. Allocating HW data
3891 ************************/
3892
3893 /* Disabling hardware scan means that mac80211 will perform scans
3894 * "the hard way", rather than using device's scan. */
3895 if (cfg->mod_params->disable_hw_scan) {
3896 if (cfg->mod_params->debug & IWL_DL_INFO)
3897 dev_printk(KERN_DEBUG, &(pdev->dev),
3898 "Disabling hw_scan\n");
3899 iwl_hw_ops.hw_scan = NULL;
3900 }
3901
3902 hw = iwl_alloc_all(cfg, &iwl_hw_ops);
3903 if (!hw) {
3904 err = -ENOMEM;
3905 goto out;
3906 }
3907 priv = hw->priv;
3908 /* At this point both hw and priv are allocated. */
3909
3910 SET_IEEE80211_DEV(hw, &pdev->dev);
3911
3912 IWL_DEBUG_INFO("*** LOAD DRIVER ***\n");
3913 priv->cfg = cfg;
3914 priv->pci_dev = pdev;
3915
3916 #ifdef CONFIG_IWLWIFI_DEBUG
3917 priv->debug_level = priv->cfg->mod_params->debug;
3918 atomic_set(&priv->restrict_refcnt, 0);
3919 #endif
3920
3921 /**************************
3922 * 2. Initializing PCI bus
3923 **************************/
3924 if (pci_enable_device(pdev)) {
3925 err = -ENODEV;
3926 goto out_ieee80211_free_hw;
3927 }
3928
3929 pci_set_master(pdev);
3930
3931 err = pci_set_dma_mask(pdev, DMA_BIT_MASK(36));
3932 if (!err)
3933 err = pci_set_consistent_dma_mask(pdev, DMA_BIT_MASK(36));
3934 if (err) {
3935 err = pci_set_dma_mask(pdev, DMA_BIT_MASK(32));
3936 if (!err)
3937 err = pci_set_consistent_dma_mask(pdev, DMA_BIT_MASK(32));
3938 /* both attempts failed: */
3939 if (err) {
3940 printk(KERN_WARNING "%s: No suitable DMA available.\n",
3941 DRV_NAME);
3942 goto out_pci_disable_device;
3943 }
3944 }
3945
3946 err = pci_request_regions(pdev, DRV_NAME);
3947 if (err)
3948 goto out_pci_disable_device;
3949
3950 pci_set_drvdata(pdev, priv);
3951
3952
3953 /***********************
3954 * 3. Read REV register
3955 ***********************/
3956 priv->hw_base = pci_iomap(pdev, 0, 0);
3957 if (!priv->hw_base) {
3958 err = -ENODEV;
3959 goto out_pci_release_regions;
3960 }
3961
3962 IWL_DEBUG_INFO("pci_resource_len = 0x%08llx\n",
3963 (unsigned long long) pci_resource_len(pdev, 0));
3964 IWL_DEBUG_INFO("pci_resource_base = %p\n", priv->hw_base);
3965
3966 iwl_hw_detect(priv);
3967 printk(KERN_INFO DRV_NAME
3968 ": Detected Intel Wireless WiFi Link %s REV=0x%X\n",
3969 priv->cfg->name, priv->hw_rev);
3970
3971 /* We disable the RETRY_TIMEOUT register (0x41) to keep
3972 * PCI Tx retries from interfering with C3 CPU state */
3973 pci_write_config_byte(pdev, PCI_CFG_RETRY_TIMEOUT, 0x00);
3974
3975 /* amp init */
3976 err = priv->cfg->ops->lib->apm_ops.init(priv);
3977 if (err < 0) {
3978 IWL_DEBUG_INFO("Failed to init APMG\n");
3979 goto out_iounmap;
3980 }
3981 /*****************
3982 * 4. Read EEPROM
3983 *****************/
3984 /* Read the EEPROM */
3985 err = iwl_eeprom_init(priv);
3986 if (err) {
3987 IWL_ERROR("Unable to init EEPROM\n");
3988 goto out_iounmap;
3989 }
3990 err = iwl_eeprom_check_version(priv);
3991 if (err)
3992 goto out_iounmap;
3993
3994 /* extract MAC Address */
3995 iwl_eeprom_get_mac(priv, priv->mac_addr);
3996 IWL_DEBUG_INFO("MAC address: %pM\n", priv->mac_addr);
3997 SET_IEEE80211_PERM_ADDR(priv->hw, priv->mac_addr);
3998
3999 /************************
4000 * 5. Setup HW constants
4001 ************************/
4002 if (iwl_set_hw_params(priv)) {
4003 IWL_ERROR("failed to set hw parameters\n");
4004 goto out_free_eeprom;
4005 }
4006
4007 /*******************
4008 * 6. Setup priv
4009 *******************/
4010
4011 err = iwl_init_drv(priv);
4012 if (err)
4013 goto out_free_eeprom;
4014 /* At this point both hw and priv are initialized. */
4015
4016 /**********************************
4017 * 7. Initialize module parameters
4018 **********************************/
4019
4020 /* Disable radio (SW RF KILL) via parameter when loading driver */
4021 if (priv->cfg->mod_params->disable) {
4022 set_bit(STATUS_RF_KILL_SW, &priv->status);
4023 IWL_DEBUG_INFO("Radio disabled.\n");
4024 }
4025
4026 /********************
4027 * 8. Setup services
4028 ********************/
4029 spin_lock_irqsave(&priv->lock, flags);
4030 iwl_disable_interrupts(priv);
4031 spin_unlock_irqrestore(&priv->lock, flags);
4032
4033 err = sysfs_create_group(&pdev->dev.kobj, &iwl_attribute_group);
4034 if (err) {
4035 IWL_ERROR("failed to create sysfs device attributes\n");
4036 goto out_uninit_drv;
4037 }
4038
4039
4040 iwl_setup_deferred_work(priv);
4041 iwl_setup_rx_handlers(priv);
4042
4043 /********************
4044 * 9. Conclude
4045 ********************/
4046 pci_save_state(pdev);
4047 pci_disable_device(pdev);
4048
4049 /**********************************
4050 * 10. Setup and register mac80211
4051 **********************************/
4052
4053 err = iwl_setup_mac(priv);
4054 if (err)
4055 goto out_remove_sysfs;
4056
4057 err = iwl_dbgfs_register(priv, DRV_NAME);
4058 if (err)
4059 IWL_ERROR("failed to create debugfs files\n");
4060
4061 err = iwl_rfkill_init(priv);
4062 if (err)
4063 IWL_ERROR("Unable to initialize RFKILL system. "
4064 "Ignoring error: %d\n", err);
4065 iwl_power_initialize(priv);
4066 return 0;
4067
4068 out_remove_sysfs:
4069 sysfs_remove_group(&pdev->dev.kobj, &iwl_attribute_group);
4070 out_uninit_drv:
4071 iwl_uninit_drv(priv);
4072 out_free_eeprom:
4073 iwl_eeprom_free(priv);
4074 out_iounmap:
4075 pci_iounmap(pdev, priv->hw_base);
4076 out_pci_release_regions:
4077 pci_release_regions(pdev);
4078 pci_set_drvdata(pdev, NULL);
4079 out_pci_disable_device:
4080 pci_disable_device(pdev);
4081 out_ieee80211_free_hw:
4082 ieee80211_free_hw(priv->hw);
4083 out:
4084 return err;
4085 }
4086
4087 static void __devexit iwl_pci_remove(struct pci_dev *pdev)
4088 {
4089 struct iwl_priv *priv = pci_get_drvdata(pdev);
4090 unsigned long flags;
4091
4092 if (!priv)
4093 return;
4094
4095 IWL_DEBUG_INFO("*** UNLOAD DRIVER ***\n");
4096
4097 iwl_dbgfs_unregister(priv);
4098 sysfs_remove_group(&pdev->dev.kobj, &iwl_attribute_group);
4099
4100 /* ieee80211_unregister_hw call wil cause iwl_mac_stop to
4101 * to be called and iwl_down since we are removing the device
4102 * we need to set STATUS_EXIT_PENDING bit.
4103 */
4104 set_bit(STATUS_EXIT_PENDING, &priv->status);
4105 if (priv->mac80211_registered) {
4106 ieee80211_unregister_hw(priv->hw);
4107 priv->mac80211_registered = 0;
4108 } else {
4109 iwl_down(priv);
4110 }
4111
4112 /* make sure we flush any pending irq or
4113 * tasklet for the driver
4114 */
4115 spin_lock_irqsave(&priv->lock, flags);
4116 iwl_disable_interrupts(priv);
4117 spin_unlock_irqrestore(&priv->lock, flags);
4118
4119 iwl_synchronize_irq(priv);
4120
4121 iwl_rfkill_unregister(priv);
4122 iwl_dealloc_ucode_pci(priv);
4123
4124 if (priv->rxq.bd)
4125 iwl_rx_queue_free(priv, &priv->rxq);
4126 iwl_hw_txq_ctx_free(priv);
4127
4128 iwl_clear_stations_table(priv);
4129 iwl_eeprom_free(priv);
4130
4131
4132 /*netif_stop_queue(dev); */
4133 flush_workqueue(priv->workqueue);
4134
4135 /* ieee80211_unregister_hw calls iwl_mac_stop, which flushes
4136 * priv->workqueue... so we can't take down the workqueue
4137 * until now... */
4138 destroy_workqueue(priv->workqueue);
4139 priv->workqueue = NULL;
4140
4141 pci_iounmap(pdev, priv->hw_base);
4142 pci_release_regions(pdev);
4143 pci_disable_device(pdev);
4144 pci_set_drvdata(pdev, NULL);
4145
4146 iwl_uninit_drv(priv);
4147
4148 if (priv->ibss_beacon)
4149 dev_kfree_skb(priv->ibss_beacon);
4150
4151 ieee80211_free_hw(priv->hw);
4152 }
4153
4154 #ifdef CONFIG_PM
4155
4156 static int iwl_pci_suspend(struct pci_dev *pdev, pm_message_t state)
4157 {
4158 struct iwl_priv *priv = pci_get_drvdata(pdev);
4159
4160 if (priv->is_open) {
4161 set_bit(STATUS_IN_SUSPEND, &priv->status);
4162 iwl_mac_stop(priv->hw);
4163 priv->is_open = 1;
4164 }
4165
4166 pci_set_power_state(pdev, PCI_D3hot);
4167
4168 return 0;
4169 }
4170
4171 static int iwl_pci_resume(struct pci_dev *pdev)
4172 {
4173 struct iwl_priv *priv = pci_get_drvdata(pdev);
4174
4175 pci_set_power_state(pdev, PCI_D0);
4176
4177 if (priv->is_open)
4178 iwl_mac_start(priv->hw);
4179
4180 clear_bit(STATUS_IN_SUSPEND, &priv->status);
4181 return 0;
4182 }
4183
4184 #endif /* CONFIG_PM */
4185
4186 /*****************************************************************************
4187 *
4188 * driver and module entry point
4189 *
4190 *****************************************************************************/
4191
4192 /* Hardware specific file defines the PCI IDs table for that hardware module */
4193 static struct pci_device_id iwl_hw_card_ids[] = {
4194 #ifdef CONFIG_IWL4965
4195 {IWL_PCI_DEVICE(0x4229, PCI_ANY_ID, iwl4965_agn_cfg)},
4196 {IWL_PCI_DEVICE(0x4230, PCI_ANY_ID, iwl4965_agn_cfg)},
4197 #endif /* CONFIG_IWL4965 */
4198 #ifdef CONFIG_IWL5000
4199 {IWL_PCI_DEVICE(0x4232, 0x1205, iwl5100_bg_cfg)},
4200 {IWL_PCI_DEVICE(0x4232, 0x1305, iwl5100_bg_cfg)},
4201 {IWL_PCI_DEVICE(0x4232, 0x1206, iwl5100_abg_cfg)},
4202 {IWL_PCI_DEVICE(0x4232, 0x1306, iwl5100_abg_cfg)},
4203 {IWL_PCI_DEVICE(0x4232, 0x1326, iwl5100_abg_cfg)},
4204 {IWL_PCI_DEVICE(0x4237, 0x1216, iwl5100_abg_cfg)},
4205 {IWL_PCI_DEVICE(0x4232, PCI_ANY_ID, iwl5100_agn_cfg)},
4206 {IWL_PCI_DEVICE(0x4235, PCI_ANY_ID, iwl5300_agn_cfg)},
4207 {IWL_PCI_DEVICE(0x4236, PCI_ANY_ID, iwl5300_agn_cfg)},
4208 {IWL_PCI_DEVICE(0x4237, PCI_ANY_ID, iwl5100_agn_cfg)},
4209 /* 5350 WiFi/WiMax */
4210 {IWL_PCI_DEVICE(0x423A, 0x1001, iwl5350_agn_cfg)},
4211 {IWL_PCI_DEVICE(0x423A, 0x1021, iwl5350_agn_cfg)},
4212 {IWL_PCI_DEVICE(0x423B, 0x1011, iwl5350_agn_cfg)},
4213 #endif /* CONFIG_IWL5000 */
4214 {0}
4215 };
4216 MODULE_DEVICE_TABLE(pci, iwl_hw_card_ids);
4217
4218 static struct pci_driver iwl_driver = {
4219 .name = DRV_NAME,
4220 .id_table = iwl_hw_card_ids,
4221 .probe = iwl_pci_probe,
4222 .remove = __devexit_p(iwl_pci_remove),
4223 #ifdef CONFIG_PM
4224 .suspend = iwl_pci_suspend,
4225 .resume = iwl_pci_resume,
4226 #endif
4227 };
4228
4229 static int __init iwl_init(void)
4230 {
4231
4232 int ret;
4233 printk(KERN_INFO DRV_NAME ": " DRV_DESCRIPTION ", " DRV_VERSION "\n");
4234 printk(KERN_INFO DRV_NAME ": " DRV_COPYRIGHT "\n");
4235
4236 ret = iwlagn_rate_control_register();
4237 if (ret) {
4238 IWL_ERROR("Unable to register rate control algorithm: %d\n", ret);
4239 return ret;
4240 }
4241
4242 ret = pci_register_driver(&iwl_driver);
4243 if (ret) {
4244 IWL_ERROR("Unable to initialize PCI module\n");
4245 goto error_register;
4246 }
4247
4248 return ret;
4249
4250 error_register:
4251 iwlagn_rate_control_unregister();
4252 return ret;
4253 }
4254
4255 static void __exit iwl_exit(void)
4256 {
4257 pci_unregister_driver(&iwl_driver);
4258 iwlagn_rate_control_unregister();
4259 }
4260
4261 module_exit(iwl_exit);
4262 module_init(iwl_init);
Linux kernel - Deliverables
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