projects / deliverable / linux.git / blob
? search:
summary | shortlog | log | commit | commitdiff | tree
blame | history | raw | HEAD
net: convert print_mac to %pM
[deliverable/linux.git] / drivers / net / wireless / iwlwifi / iwl-agn.c
1 /******************************************************************************
2 *
3 * Copyright(c) 2003 - 2008 Intel Corporation. All rights reserved.
4 *
5 * Portions of this file are derived from the ipw3945 project, as well
6 * as portions of the ieee80211 subsystem header files.
7 *
8 * This program is free software; you can redistribute it and/or modify it
9 * under the terms of version 2 of the GNU General Public License as
10 * published by the Free Software Foundation.
11 *
12 * This program is distributed in the hope that it will be useful, but WITHOUT
13 * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
14 * FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License for
15 * more details.
16 *
17 * You should have received a copy of the GNU General Public License along with
18 * this program; if not, write to the Free Software Foundation, Inc.,
19 * 51 Franklin Street, Fifth Floor, Boston, MA 02110, USA
20 *
21 * The full GNU General Public License is included in this distribution in the
22 * file called LICENSE.
23 *
24 * Contact Information:
25 * James P. Ketrenos <ipw2100-admin@linux.intel.com>
26 * Intel Corporation, 5200 N.E. Elam Young Parkway, Hillsboro, OR 97124-6497
27 *
28 *****************************************************************************/
29
30 #include <linux/kernel.h>
31 #include <linux/module.h>
32 #include <linux/init.h>
33 #include <linux/pci.h>
34 #include <linux/dma-mapping.h>
35 #include <linux/delay.h>
36 #include <linux/skbuff.h>
37 #include <linux/netdevice.h>
38 #include <linux/wireless.h>
39 #include <linux/firmware.h>
40 #include <linux/etherdevice.h>
41 #include <linux/if_arp.h>
42
43 #include <net/mac80211.h>
44
45 #include <asm/div64.h>
46
47 #include "iwl-eeprom.h"
48 #include "iwl-dev.h"
49 #include "iwl-core.h"
50 #include "iwl-io.h"
51 #include "iwl-helpers.h"
52 #include "iwl-sta.h"
53 #include "iwl-calib.h"
54
55
56 /******************************************************************************
57 *
58 * module boiler plate
59 *
60 ******************************************************************************/
61
62 /*
63 * module name, copyright, version, etc.
64 * NOTE: DRV_NAME is defined in iwlwifi.h for use by iwl-debug.h and printk
65 */
66
67 #define DRV_DESCRIPTION "Intel(R) Wireless WiFi Link AGN driver for Linux"
68
69 #ifdef CONFIG_IWLWIFI_DEBUG
70 #define VD "d"
71 #else
72 #define VD
73 #endif
74
75 #ifdef CONFIG_IWLAGN_SPECTRUM_MEASUREMENT
76 #define VS "s"
77 #else
78 #define VS
79 #endif
80
81 #define DRV_VERSION IWLWIFI_VERSION VD VS
82
83
84 MODULE_DESCRIPTION(DRV_DESCRIPTION);
85 MODULE_VERSION(DRV_VERSION);
86 MODULE_AUTHOR(DRV_COPYRIGHT);
87 MODULE_LICENSE("GPL");
88 MODULE_ALIAS("iwl4965");
89
90 /*************** STATION TABLE MANAGEMENT ****
91 * mac80211 should be examined to determine if sta_info is duplicating
92 * the functionality provided here
93 */
94
95 /**************************************************************/
96
97
98
99 static void iwl4965_set_rxon_hwcrypto(struct iwl_priv *priv, int hw_decrypt)
100 {
101 struct iwl_rxon_cmd *rxon = &priv->staging_rxon;
102
103 if (hw_decrypt)
104 rxon->filter_flags &= ~RXON_FILTER_DIS_DECRYPT_MSK;
105 else
106 rxon->filter_flags |= RXON_FILTER_DIS_DECRYPT_MSK;
107
108 }
109
110 /**
111 * iwl4965_check_rxon_cmd - validate RXON structure is valid
112 *
113 * NOTE: This is really only useful during development and can eventually
114 * be #ifdef'd out once the driver is stable and folks aren't actively
115 * making changes
116 */
117 static int iwl4965_check_rxon_cmd(struct iwl_rxon_cmd *rxon)
118 {
119 int error = 0;
120 int counter = 1;
121
122 if (rxon->flags & RXON_FLG_BAND_24G_MSK) {
123 error |= le32_to_cpu(rxon->flags &
124 (RXON_FLG_TGJ_NARROW_BAND_MSK |
125 RXON_FLG_RADAR_DETECT_MSK));
126 if (error)
127 IWL_WARNING("check 24G fields %d | %d\n",
128 counter++, error);
129 } else {
130 error |= (rxon->flags & RXON_FLG_SHORT_SLOT_MSK) ?
131 0 : le32_to_cpu(RXON_FLG_SHORT_SLOT_MSK);
132 if (error)
133 IWL_WARNING("check 52 fields %d | %d\n",
134 counter++, error);
135 error |= le32_to_cpu(rxon->flags & RXON_FLG_CCK_MSK);
136 if (error)
137 IWL_WARNING("check 52 CCK %d | %d\n",
138 counter++, error);
139 }
140 error |= (rxon->node_addr[0] | rxon->bssid_addr[0]) & 0x1;
141 if (error)
142 IWL_WARNING("check mac addr %d | %d\n", counter++, error);
143
144 /* make sure basic rates 6Mbps and 1Mbps are supported */
145 error |= (((rxon->ofdm_basic_rates & IWL_RATE_6M_MASK) == 0) &&
146 ((rxon->cck_basic_rates & IWL_RATE_1M_MASK) == 0));
147 if (error)
148 IWL_WARNING("check basic rate %d | %d\n", counter++, error);
149
150 error |= (le16_to_cpu(rxon->assoc_id) > 2007);
151 if (error)
152 IWL_WARNING("check assoc id %d | %d\n", counter++, error);
153
154 error |= ((rxon->flags & (RXON_FLG_CCK_MSK | RXON_FLG_SHORT_SLOT_MSK))
155 == (RXON_FLG_CCK_MSK | RXON_FLG_SHORT_SLOT_MSK));
156 if (error)
157 IWL_WARNING("check CCK and short slot %d | %d\n",
158 counter++, error);
159
160 error |= ((rxon->flags & (RXON_FLG_CCK_MSK | RXON_FLG_AUTO_DETECT_MSK))
161 == (RXON_FLG_CCK_MSK | RXON_FLG_AUTO_DETECT_MSK));
162 if (error)
163 IWL_WARNING("check CCK & auto detect %d | %d\n",
164 counter++, error);
165
166 error |= ((rxon->flags & (RXON_FLG_AUTO_DETECT_MSK |
167 RXON_FLG_TGG_PROTECT_MSK)) == RXON_FLG_TGG_PROTECT_MSK);
168 if (error)
169 IWL_WARNING("check TGG and auto detect %d | %d\n",
170 counter++, error);
171
172 if (error)
173 IWL_WARNING("Tuning to channel %d\n",
174 le16_to_cpu(rxon->channel));
175
176 if (error) {
177 IWL_ERROR("Not a valid iwl4965_rxon_assoc_cmd field values\n");
178 return -1;
179 }
180 return 0;
181 }
182
183 /**
184 * iwl_full_rxon_required - check if full RXON (vs RXON_ASSOC) cmd is needed
185 * @priv: staging_rxon is compared to active_rxon
186 *
187 * If the RXON structure is changing enough to require a new tune,
188 * or is clearing the RXON_FILTER_ASSOC_MSK, then return 1 to indicate that
189 * a new tune (full RXON command, rather than RXON_ASSOC cmd) is required.
190 */
191 static int iwl_full_rxon_required(struct iwl_priv *priv)
192 {
193
194 /* These items are only settable from the full RXON command */
195 if (!(iwl_is_associated(priv)) ||
196 compare_ether_addr(priv->staging_rxon.bssid_addr,
197 priv->active_rxon.bssid_addr) ||
198 compare_ether_addr(priv->staging_rxon.node_addr,
199 priv->active_rxon.node_addr) ||
200 compare_ether_addr(priv->staging_rxon.wlap_bssid_addr,
201 priv->active_rxon.wlap_bssid_addr) ||
202 (priv->staging_rxon.dev_type != priv->active_rxon.dev_type) ||
203 (priv->staging_rxon.channel != priv->active_rxon.channel) ||
204 (priv->staging_rxon.air_propagation !=
205 priv->active_rxon.air_propagation) ||
206 (priv->staging_rxon.ofdm_ht_single_stream_basic_rates !=
207 priv->active_rxon.ofdm_ht_single_stream_basic_rates) ||
208 (priv->staging_rxon.ofdm_ht_dual_stream_basic_rates !=
209 priv->active_rxon.ofdm_ht_dual_stream_basic_rates) ||
210 (priv->staging_rxon.assoc_id != priv->active_rxon.assoc_id))
211 return 1;
212
213 /* flags, filter_flags, ofdm_basic_rates, and cck_basic_rates can
214 * be updated with the RXON_ASSOC command -- however only some
215 * flag transitions are allowed using RXON_ASSOC */
216
217 /* Check if we are not switching bands */
218 if ((priv->staging_rxon.flags & RXON_FLG_BAND_24G_MSK) !=
219 (priv->active_rxon.flags & RXON_FLG_BAND_24G_MSK))
220 return 1;
221
222 /* Check if we are switching association toggle */
223 if ((priv->staging_rxon.filter_flags & RXON_FILTER_ASSOC_MSK) !=
224 (priv->active_rxon.filter_flags & RXON_FILTER_ASSOC_MSK))
225 return 1;
226
227 return 0;
228 }
229
230 /**
231 * iwl4965_commit_rxon - commit staging_rxon to hardware
232 *
233 * The RXON command in staging_rxon is committed to the hardware and
234 * the active_rxon structure is updated with the new data. This
235 * function correctly transitions out of the RXON_ASSOC_MSK state if
236 * a HW tune is required based on the RXON structure changes.
237 */
238 static int iwl4965_commit_rxon(struct iwl_priv *priv)
239 {
240 /* cast away the const for active_rxon in this function */
241 struct iwl_rxon_cmd *active_rxon = (void *)&priv->active_rxon;
242 int ret;
243 bool new_assoc =
244 !!(priv->staging_rxon.filter_flags & RXON_FILTER_ASSOC_MSK);
245
246 if (!iwl_is_alive(priv))
247 return -EBUSY;
248
249 /* always get timestamp with Rx frame */
250 priv->staging_rxon.flags |= RXON_FLG_TSF2HOST_MSK;
251 /* allow CTS-to-self if possible. this is relevant only for
252 * 5000, but will not damage 4965 */
253 priv->staging_rxon.flags |= RXON_FLG_SELF_CTS_EN;
254
255 ret = iwl4965_check_rxon_cmd(&priv->staging_rxon);
256 if (ret) {
257 IWL_ERROR("Invalid RXON configuration. Not committing.\n");
258 return -EINVAL;
259 }
260
261 /* If we don't need to send a full RXON, we can use
262 * iwl4965_rxon_assoc_cmd which is used to reconfigure filter
263 * and other flags for the current radio configuration. */
264 if (!iwl_full_rxon_required(priv)) {
265 ret = iwl_send_rxon_assoc(priv);
266 if (ret) {
267 IWL_ERROR("Error setting RXON_ASSOC (%d)\n", ret);
268 return ret;
269 }
270
271 memcpy(active_rxon, &priv->staging_rxon, sizeof(*active_rxon));
272 return 0;
273 }
274
275 /* station table will be cleared */
276 priv->assoc_station_added = 0;
277
278 /* If we are currently associated and the new config requires
279 * an RXON_ASSOC and the new config wants the associated mask enabled,
280 * we must clear the associated from the active configuration
281 * before we apply the new config */
282 if (iwl_is_associated(priv) && new_assoc) {
283 IWL_DEBUG_INFO("Toggling associated bit on current RXON\n");
284 active_rxon->filter_flags &= ~RXON_FILTER_ASSOC_MSK;
285
286 ret = iwl_send_cmd_pdu(priv, REPLY_RXON,
287 sizeof(struct iwl_rxon_cmd),
288 &priv->active_rxon);
289
290 /* If the mask clearing failed then we set
291 * active_rxon back to what it was previously */
292 if (ret) {
293 active_rxon->filter_flags |= RXON_FILTER_ASSOC_MSK;
294 IWL_ERROR("Error clearing ASSOC_MSK (%d)\n", ret);
295 return ret;
296 }
297 }
298
299 IWL_DEBUG_INFO("Sending RXON\n"
300 "* with%s RXON_FILTER_ASSOC_MSK\n"
301 "* channel = %d\n"
302 "* bssid = %pM\n",
303 (new_assoc ? "" : "out"),
304 le16_to_cpu(priv->staging_rxon.channel),
305 priv->staging_rxon.bssid_addr);
306
307 iwl4965_set_rxon_hwcrypto(priv, !priv->hw_params.sw_crypto);
308
309 /* Apply the new configuration
310 * RXON unassoc clears the station table in uCode, send it before
311 * we add the bcast station. If assoc bit is set, we will send RXON
312 * after having added the bcast and bssid station.
313 */
314 if (!new_assoc) {
315 ret = iwl_send_cmd_pdu(priv, REPLY_RXON,
316 sizeof(struct iwl_rxon_cmd), &priv->staging_rxon);
317 if (ret) {
318 IWL_ERROR("Error setting new RXON (%d)\n", ret);
319 return ret;
320 }
321 memcpy(active_rxon, &priv->staging_rxon, sizeof(*active_rxon));
322 }
323
324 iwl_clear_stations_table(priv);
325
326 if (!priv->error_recovering)
327 priv->start_calib = 0;
328
329 /* Add the broadcast address so we can send broadcast frames */
330 if (iwl_rxon_add_station(priv, iwl_bcast_addr, 0) ==
331 IWL_INVALID_STATION) {
332 IWL_ERROR("Error adding BROADCAST address for transmit.\n");
333 return -EIO;
334 }
335
336 /* If we have set the ASSOC_MSK and we are in BSS mode then
337 * add the IWL_AP_ID to the station rate table */
338 if (new_assoc) {
339 if (priv->iw_mode == NL80211_IFTYPE_STATION) {
340 ret = iwl_rxon_add_station(priv,
341 priv->active_rxon.bssid_addr, 1);
342 if (ret == IWL_INVALID_STATION) {
343 IWL_ERROR("Error adding AP address for TX.\n");
344 return -EIO;
345 }
346 priv->assoc_station_added = 1;
347 if (priv->default_wep_key &&
348 iwl_send_static_wepkey_cmd(priv, 0))
349 IWL_ERROR("Could not send WEP static key.\n");
350 }
351
352 /* Apply the new configuration
353 * RXON assoc doesn't clear the station table in uCode,
354 */
355 ret = iwl_send_cmd_pdu(priv, REPLY_RXON,
356 sizeof(struct iwl_rxon_cmd), &priv->staging_rxon);
357 if (ret) {
358 IWL_ERROR("Error setting new RXON (%d)\n", ret);
359 return ret;
360 }
361 memcpy(active_rxon, &priv->staging_rxon, sizeof(*active_rxon));
362 }
363
364 iwl_init_sensitivity(priv);
365
366 /* If we issue a new RXON command which required a tune then we must
367 * send a new TXPOWER command or we won't be able to Tx any frames */
368 ret = iwl_set_tx_power(priv, priv->tx_power_user_lmt, true);
369 if (ret) {
370 IWL_ERROR("Error sending TX power (%d)\n", ret);
371 return ret;
372 }
373
374 return 0;
375 }
376
377 void iwl4965_update_chain_flags(struct iwl_priv *priv)
378 {
379
380 iwl_set_rxon_chain(priv);
381 iwl4965_commit_rxon(priv);
382 }
383
384 static int iwl4965_send_bt_config(struct iwl_priv *priv)
385 {
386 struct iwl4965_bt_cmd bt_cmd = {
387 .flags = 3,
388 .lead_time = 0xAA,
389 .max_kill = 1,
390 .kill_ack_mask = 0,
391 .kill_cts_mask = 0,
392 };
393
394 return iwl_send_cmd_pdu(priv, REPLY_BT_CONFIG,
395 sizeof(struct iwl4965_bt_cmd), &bt_cmd);
396 }
397
398 static void iwl_clear_free_frames(struct iwl_priv *priv)
399 {
400 struct list_head *element;
401
402 IWL_DEBUG_INFO("%d frames on pre-allocated heap on clear.\n",
403 priv->frames_count);
404
405 while (!list_empty(&priv->free_frames)) {
406 element = priv->free_frames.next;
407 list_del(element);
408 kfree(list_entry(element, struct iwl_frame, list));
409 priv->frames_count--;
410 }
411
412 if (priv->frames_count) {
413 IWL_WARNING("%d frames still in use. Did we lose one?\n",
414 priv->frames_count);
415 priv->frames_count = 0;
416 }
417 }
418
419 static struct iwl_frame *iwl_get_free_frame(struct iwl_priv *priv)
420 {
421 struct iwl_frame *frame;
422 struct list_head *element;
423 if (list_empty(&priv->free_frames)) {
424 frame = kzalloc(sizeof(*frame), GFP_KERNEL);
425 if (!frame) {
426 IWL_ERROR("Could not allocate frame!\n");
427 return NULL;
428 }
429
430 priv->frames_count++;
431 return frame;
432 }
433
434 element = priv->free_frames.next;
435 list_del(element);
436 return list_entry(element, struct iwl_frame, list);
437 }
438
439 static void iwl_free_frame(struct iwl_priv *priv, struct iwl_frame *frame)
440 {
441 memset(frame, 0, sizeof(*frame));
442 list_add(&frame->list, &priv->free_frames);
443 }
444
445 static unsigned int iwl_fill_beacon_frame(struct iwl_priv *priv,
446 struct ieee80211_hdr *hdr,
447 const u8 *dest, int left)
448 {
449 if (!iwl_is_associated(priv) || !priv->ibss_beacon ||
450 ((priv->iw_mode != NL80211_IFTYPE_ADHOC) &&
451 (priv->iw_mode != NL80211_IFTYPE_AP)))
452 return 0;
453
454 if (priv->ibss_beacon->len > left)
455 return 0;
456
457 memcpy(hdr, priv->ibss_beacon->data, priv->ibss_beacon->len);
458
459 return priv->ibss_beacon->len;
460 }
461
462 static u8 iwl4965_rate_get_lowest_plcp(struct iwl_priv *priv)
463 {
464 int i;
465 int rate_mask;
466
467 /* Set rate mask*/
468 if (priv->staging_rxon.flags & RXON_FLG_BAND_24G_MSK)
469 rate_mask = priv->active_rate_basic & 0xF;
470 else
471 rate_mask = priv->active_rate_basic & 0xFF0;
472
473 /* Find lowest valid rate */
474 for (i = IWL_RATE_1M_INDEX; i != IWL_RATE_INVALID;
475 i = iwl_rates[i].next_ieee) {
476 if (rate_mask & (1 << i))
477 return iwl_rates[i].plcp;
478 }
479
480 /* No valid rate was found. Assign the lowest one */
481 if (priv->staging_rxon.flags & RXON_FLG_BAND_24G_MSK)
482 return IWL_RATE_1M_PLCP;
483 else
484 return IWL_RATE_6M_PLCP;
485 }
486
487 static unsigned int iwl4965_hw_get_beacon_cmd(struct iwl_priv *priv,
488 struct iwl_frame *frame, u8 rate)
489 {
490 struct iwl_tx_beacon_cmd *tx_beacon_cmd;
491 unsigned int frame_size;
492
493 tx_beacon_cmd = &frame->u.beacon;
494 memset(tx_beacon_cmd, 0, sizeof(*tx_beacon_cmd));
495
496 tx_beacon_cmd->tx.sta_id = priv->hw_params.bcast_sta_id;
497 tx_beacon_cmd->tx.stop_time.life_time = TX_CMD_LIFE_TIME_INFINITE;
498
499 frame_size = iwl_fill_beacon_frame(priv, tx_beacon_cmd->frame,
500 iwl_bcast_addr,
501 sizeof(frame->u) - sizeof(*tx_beacon_cmd));
502
503 BUG_ON(frame_size > MAX_MPDU_SIZE);
504 tx_beacon_cmd->tx.len = cpu_to_le16((u16)frame_size);
505
506 if ((rate == IWL_RATE_1M_PLCP) || (rate >= IWL_RATE_2M_PLCP))
507 tx_beacon_cmd->tx.rate_n_flags =
508 iwl_hw_set_rate_n_flags(rate, RATE_MCS_CCK_MSK);
509 else
510 tx_beacon_cmd->tx.rate_n_flags =
511 iwl_hw_set_rate_n_flags(rate, 0);
512
513 tx_beacon_cmd->tx.tx_flags = TX_CMD_FLG_SEQ_CTL_MSK |
514 TX_CMD_FLG_TSF_MSK |
515 TX_CMD_FLG_STA_RATE_MSK;
516
517 return sizeof(*tx_beacon_cmd) + frame_size;
518 }
519 static int iwl4965_send_beacon_cmd(struct iwl_priv *priv)
520 {
521 struct iwl_frame *frame;
522 unsigned int frame_size;
523 int rc;
524 u8 rate;
525
526 frame = iwl_get_free_frame(priv);
527
528 if (!frame) {
529 IWL_ERROR("Could not obtain free frame buffer for beacon "
530 "command.\n");
531 return -ENOMEM;
532 }
533
534 rate = iwl4965_rate_get_lowest_plcp(priv);
535
536 frame_size = iwl4965_hw_get_beacon_cmd(priv, frame, rate);
537
538 rc = iwl_send_cmd_pdu(priv, REPLY_TX_BEACON, frame_size,
539 &frame->u.cmd[0]);
540
541 iwl_free_frame(priv, frame);
542
543 return rc;
544 }
545
546 /******************************************************************************
547 *
548 * Misc. internal state and helper functions
549 *
550 ******************************************************************************/
551
552 static void iwl4965_ht_conf(struct iwl_priv *priv,
553 struct ieee80211_bss_conf *bss_conf)
554 {
555 struct ieee80211_ht_info *ht_conf = bss_conf->ht_conf;
556 struct ieee80211_ht_bss_info *ht_bss_conf = bss_conf->ht_bss_conf;
557 struct iwl_ht_info *iwl_conf = &priv->current_ht_config;
558
559 IWL_DEBUG_MAC80211("enter: \n");
560
561 iwl_conf->is_ht = bss_conf->assoc_ht;
562
563 if (!iwl_conf->is_ht)
564 return;
565
566 if (ht_conf->cap & IEEE80211_HT_CAP_SGI_20)
567 iwl_conf->sgf |= HT_SHORT_GI_20MHZ;
568 if (ht_conf->cap & IEEE80211_HT_CAP_SGI_40)
569 iwl_conf->sgf |= HT_SHORT_GI_40MHZ;
570
571 iwl_conf->is_green_field = !!(ht_conf->cap & IEEE80211_HT_CAP_GRN_FLD);
572 iwl_conf->max_amsdu_size =
573 !!(ht_conf->cap & IEEE80211_HT_CAP_MAX_AMSDU);
574
575 iwl_conf->supported_chan_width =
576 !!(ht_conf->cap & IEEE80211_HT_CAP_SUP_WIDTH);
577 iwl_conf->extension_chan_offset =
578 ht_bss_conf->bss_cap & IEEE80211_HT_IE_CHA_SEC_OFFSET;
579 /* If no above or below channel supplied disable FAT channel */
580 if (iwl_conf->extension_chan_offset != IEEE80211_HT_IE_CHA_SEC_ABOVE &&
581 iwl_conf->extension_chan_offset != IEEE80211_HT_IE_CHA_SEC_BELOW) {
582 iwl_conf->extension_chan_offset = IEEE80211_HT_IE_CHA_SEC_NONE;
583 iwl_conf->supported_chan_width = 0;
584 }
585
586 iwl_conf->sm_ps = (u8)((ht_conf->cap & IEEE80211_HT_CAP_SM_PS) >> 2);
587
588 memcpy(iwl_conf->supp_mcs_set, ht_conf->supp_mcs_set, 16);
589
590 iwl_conf->control_channel = ht_bss_conf->primary_channel;
591 iwl_conf->tx_chan_width =
592 !!(ht_bss_conf->bss_cap & IEEE80211_HT_IE_CHA_WIDTH);
593 iwl_conf->ht_protection =
594 ht_bss_conf->bss_op_mode & IEEE80211_HT_IE_HT_PROTECTION;
595 iwl_conf->non_GF_STA_present =
596 !!(ht_bss_conf->bss_op_mode & IEEE80211_HT_IE_NON_GF_STA_PRSNT);
597
598 IWL_DEBUG_MAC80211("control channel %d\n", iwl_conf->control_channel);
599 IWL_DEBUG_MAC80211("leave\n");
600 }
601
602 /*
603 * QoS support
604 */
605 static void iwl_activate_qos(struct iwl_priv *priv, u8 force)
606 {
607 if (test_bit(STATUS_EXIT_PENDING, &priv->status))
608 return;
609
610 if (!priv->qos_data.qos_enable)
611 return;
612
613 priv->qos_data.def_qos_parm.qos_flags = 0;
614
615 if (priv->qos_data.qos_cap.q_AP.queue_request &&
616 !priv->qos_data.qos_cap.q_AP.txop_request)
617 priv->qos_data.def_qos_parm.qos_flags |=
618 QOS_PARAM_FLG_TXOP_TYPE_MSK;
619 if (priv->qos_data.qos_active)
620 priv->qos_data.def_qos_parm.qos_flags |=
621 QOS_PARAM_FLG_UPDATE_EDCA_MSK;
622
623 if (priv->current_ht_config.is_ht)
624 priv->qos_data.def_qos_parm.qos_flags |= QOS_PARAM_FLG_TGN_MSK;
625
626 if (force || iwl_is_associated(priv)) {
627 IWL_DEBUG_QOS("send QoS cmd with Qos active=%d FLAGS=0x%X\n",
628 priv->qos_data.qos_active,
629 priv->qos_data.def_qos_parm.qos_flags);
630
631 iwl_send_cmd_pdu_async(priv, REPLY_QOS_PARAM,
632 sizeof(struct iwl_qosparam_cmd),
633 &priv->qos_data.def_qos_parm, NULL);
634 }
635 }
636
637 #define MAX_UCODE_BEACON_INTERVAL 4096
638
639 static __le16 iwl4965_adjust_beacon_interval(u16 beacon_val)
640 {
641 u16 new_val = 0;
642 u16 beacon_factor = 0;
643
644 beacon_factor =
645 (beacon_val + MAX_UCODE_BEACON_INTERVAL)
646 / MAX_UCODE_BEACON_INTERVAL;
647 new_val = beacon_val / beacon_factor;
648
649 return cpu_to_le16(new_val);
650 }
651
652 static void iwl4965_setup_rxon_timing(struct iwl_priv *priv)
653 {
654 u64 interval_tm_unit;
655 u64 tsf, result;
656 unsigned long flags;
657 struct ieee80211_conf *conf = NULL;
658 u16 beacon_int = 0;
659
660 conf = ieee80211_get_hw_conf(priv->hw);
661
662 spin_lock_irqsave(&priv->lock, flags);
663 priv->rxon_timing.timestamp.dw[1] = cpu_to_le32(priv->timestamp >> 32);
664 priv->rxon_timing.timestamp.dw[0] =
665 cpu_to_le32(priv->timestamp & 0xFFFFFFFF);
666
667 priv->rxon_timing.listen_interval = cpu_to_le16(conf->listen_interval);
668
669 tsf = priv->timestamp;
670
671 beacon_int = priv->beacon_int;
672 spin_unlock_irqrestore(&priv->lock, flags);
673
674 if (priv->iw_mode == NL80211_IFTYPE_STATION) {
675 if (beacon_int == 0) {
676 priv->rxon_timing.beacon_interval = cpu_to_le16(100);
677 priv->rxon_timing.beacon_init_val = cpu_to_le32(102400);
678 } else {
679 priv->rxon_timing.beacon_interval =
680 cpu_to_le16(beacon_int);
681 priv->rxon_timing.beacon_interval =
682 iwl4965_adjust_beacon_interval(
683 le16_to_cpu(priv->rxon_timing.beacon_interval));
684 }
685
686 priv->rxon_timing.atim_window = 0;
687 } else {
688 priv->rxon_timing.beacon_interval =
689 iwl4965_adjust_beacon_interval(conf->beacon_int);
690 /* TODO: we need to get atim_window from upper stack
691 * for now we set to 0 */
692 priv->rxon_timing.atim_window = 0;
693 }
694
695 interval_tm_unit =
696 (le16_to_cpu(priv->rxon_timing.beacon_interval) * 1024);
697 result = do_div(tsf, interval_tm_unit);
698 priv->rxon_timing.beacon_init_val =
699 cpu_to_le32((u32) ((u64) interval_tm_unit - result));
700
701 IWL_DEBUG_ASSOC
702 ("beacon interval %d beacon timer %d beacon tim %d\n",
703 le16_to_cpu(priv->rxon_timing.beacon_interval),
704 le32_to_cpu(priv->rxon_timing.beacon_init_val),
705 le16_to_cpu(priv->rxon_timing.atim_window));
706 }
707
708 static void iwl_set_flags_for_band(struct iwl_priv *priv,
709 enum ieee80211_band band)
710 {
711 if (band == IEEE80211_BAND_5GHZ) {
712 priv->staging_rxon.flags &=
713 ~(RXON_FLG_BAND_24G_MSK | RXON_FLG_AUTO_DETECT_MSK
714 | RXON_FLG_CCK_MSK);
715 priv->staging_rxon.flags |= RXON_FLG_SHORT_SLOT_MSK;
716 } else {
717 /* Copied from iwl4965_post_associate() */
718 if (priv->assoc_capability & WLAN_CAPABILITY_SHORT_SLOT_TIME)
719 priv->staging_rxon.flags |= RXON_FLG_SHORT_SLOT_MSK;
720 else
721 priv->staging_rxon.flags &= ~RXON_FLG_SHORT_SLOT_MSK;
722
723 if (priv->iw_mode == NL80211_IFTYPE_ADHOC)
724 priv->staging_rxon.flags &= ~RXON_FLG_SHORT_SLOT_MSK;
725
726 priv->staging_rxon.flags |= RXON_FLG_BAND_24G_MSK;
727 priv->staging_rxon.flags |= RXON_FLG_AUTO_DETECT_MSK;
728 priv->staging_rxon.flags &= ~RXON_FLG_CCK_MSK;
729 }
730 }
731
732 /*
733 * initialize rxon structure with default values from eeprom
734 */
735 static void iwl4965_connection_init_rx_config(struct iwl_priv *priv)
736 {
737 const struct iwl_channel_info *ch_info;
738
739 memset(&priv->staging_rxon, 0, sizeof(priv->staging_rxon));
740
741 switch (priv->iw_mode) {
742 case NL80211_IFTYPE_AP:
743 priv->staging_rxon.dev_type = RXON_DEV_TYPE_AP;
744 break;
745
746 case NL80211_IFTYPE_STATION:
747 priv->staging_rxon.dev_type = RXON_DEV_TYPE_ESS;
748 priv->staging_rxon.filter_flags = RXON_FILTER_ACCEPT_GRP_MSK;
749 break;
750
751 case NL80211_IFTYPE_ADHOC:
752 priv->staging_rxon.dev_type = RXON_DEV_TYPE_IBSS;
753 priv->staging_rxon.flags = RXON_FLG_SHORT_PREAMBLE_MSK;
754 priv->staging_rxon.filter_flags = RXON_FILTER_BCON_AWARE_MSK |
755 RXON_FILTER_ACCEPT_GRP_MSK;
756 break;
757
758 case NL80211_IFTYPE_MONITOR:
759 priv->staging_rxon.dev_type = RXON_DEV_TYPE_SNIFFER;
760 priv->staging_rxon.filter_flags = RXON_FILTER_PROMISC_MSK |
761 RXON_FILTER_CTL2HOST_MSK | RXON_FILTER_ACCEPT_GRP_MSK;
762 break;
763 default:
764 IWL_ERROR("Unsupported interface type %d\n", priv->iw_mode);
765 break;
766 }
767
768 #if 0
769 /* TODO: Figure out when short_preamble would be set and cache from
770 * that */
771 if (!hw_to_local(priv->hw)->short_preamble)
772 priv->staging_rxon.flags &= ~RXON_FLG_SHORT_PREAMBLE_MSK;
773 else
774 priv->staging_rxon.flags |= RXON_FLG_SHORT_PREAMBLE_MSK;
775 #endif
776
777 ch_info = iwl_get_channel_info(priv, priv->band,
778 le16_to_cpu(priv->active_rxon.channel));
779
780 if (!ch_info)
781 ch_info = &priv->channel_info[0];
782
783 /*
784 * in some case A channels are all non IBSS
785 * in this case force B/G channel
786 */
787 if ((priv->iw_mode == NL80211_IFTYPE_ADHOC) &&
788 !(is_channel_ibss(ch_info)))
789 ch_info = &priv->channel_info[0];
790
791 priv->staging_rxon.channel = cpu_to_le16(ch_info->channel);
792 priv->band = ch_info->band;
793
794 iwl_set_flags_for_band(priv, priv->band);
795
796 priv->staging_rxon.ofdm_basic_rates =
797 (IWL_OFDM_RATES_MASK >> IWL_FIRST_OFDM_RATE) & 0xFF;
798 priv->staging_rxon.cck_basic_rates =
799 (IWL_CCK_RATES_MASK >> IWL_FIRST_CCK_RATE) & 0xF;
800
801 priv->staging_rxon.flags &= ~(RXON_FLG_CHANNEL_MODE_MIXED_MSK |
802 RXON_FLG_CHANNEL_MODE_PURE_40_MSK);
803 memcpy(priv->staging_rxon.node_addr, priv->mac_addr, ETH_ALEN);
804 memcpy(priv->staging_rxon.wlap_bssid_addr, priv->mac_addr, ETH_ALEN);
805 priv->staging_rxon.ofdm_ht_single_stream_basic_rates = 0xff;
806 priv->staging_rxon.ofdm_ht_dual_stream_basic_rates = 0xff;
807 iwl_set_rxon_chain(priv);
808 }
809
810 static int iwl4965_set_mode(struct iwl_priv *priv, int mode)
811 {
812 priv->iw_mode = mode;
813
814 iwl4965_connection_init_rx_config(priv);
815 memcpy(priv->staging_rxon.node_addr, priv->mac_addr, ETH_ALEN);
816
817 iwl_clear_stations_table(priv);
818
819 /* dont commit rxon if rf-kill is on*/
820 if (!iwl_is_ready_rf(priv))
821 return -EAGAIN;
822
823 cancel_delayed_work(&priv->scan_check);
824 if (iwl_scan_cancel_timeout(priv, 100)) {
825 IWL_WARNING("Aborted scan still in progress after 100ms\n");
826 IWL_DEBUG_MAC80211("leaving - scan abort failed.\n");
827 return -EAGAIN;
828 }
829
830 iwl4965_commit_rxon(priv);
831
832 return 0;
833 }
834
835 static void iwl4965_set_rate(struct iwl_priv *priv)
836 {
837 const struct ieee80211_supported_band *hw = NULL;
838 struct ieee80211_rate *rate;
839 int i;
840
841 hw = iwl_get_hw_mode(priv, priv->band);
842 if (!hw) {
843 IWL_ERROR("Failed to set rate: unable to get hw mode\n");
844 return;
845 }
846
847 priv->active_rate = 0;
848 priv->active_rate_basic = 0;
849
850 for (i = 0; i < hw->n_bitrates; i++) {
851 rate = &(hw->bitrates[i]);
852 if (rate->hw_value < IWL_RATE_COUNT)
853 priv->active_rate |= (1 << rate->hw_value);
854 }
855
856 IWL_DEBUG_RATE("Set active_rate = %0x, active_rate_basic = %0x\n",
857 priv->active_rate, priv->active_rate_basic);
858
859 /*
860 * If a basic rate is configured, then use it (adding IWL_RATE_1M_MASK)
861 * otherwise set it to the default of all CCK rates and 6, 12, 24 for
862 * OFDM
863 */
864 if (priv->active_rate_basic & IWL_CCK_BASIC_RATES_MASK)
865 priv->staging_rxon.cck_basic_rates =
866 ((priv->active_rate_basic &
867 IWL_CCK_RATES_MASK) >> IWL_FIRST_CCK_RATE) & 0xF;
868 else
869 priv->staging_rxon.cck_basic_rates =
870 (IWL_CCK_BASIC_RATES_MASK >> IWL_FIRST_CCK_RATE) & 0xF;
871
872 if (priv->active_rate_basic & IWL_OFDM_BASIC_RATES_MASK)
873 priv->staging_rxon.ofdm_basic_rates =
874 ((priv->active_rate_basic &
875 (IWL_OFDM_BASIC_RATES_MASK | IWL_RATE_6M_MASK)) >>
876 IWL_FIRST_OFDM_RATE) & 0xFF;
877 else
878 priv->staging_rxon.ofdm_basic_rates =
879 (IWL_OFDM_BASIC_RATES_MASK >> IWL_FIRST_OFDM_RATE) & 0xFF;
880 }
881
882 #ifdef CONFIG_IWLAGN_SPECTRUM_MEASUREMENT
883
884 #include "iwl-spectrum.h"
885
886 #define BEACON_TIME_MASK_LOW 0x00FFFFFF
887 #define BEACON_TIME_MASK_HIGH 0xFF000000
888 #define TIME_UNIT 1024
889
890 /*
891 * extended beacon time format
892 * time in usec will be changed into a 32-bit value in 8:24 format
893 * the high 1 byte is the beacon counts
894 * the lower 3 bytes is the time in usec within one beacon interval
895 */
896
897 static u32 iwl4965_usecs_to_beacons(u32 usec, u32 beacon_interval)
898 {
899 u32 quot;
900 u32 rem;
901 u32 interval = beacon_interval * 1024;
902
903 if (!interval || !usec)
904 return 0;
905
906 quot = (usec / interval) & (BEACON_TIME_MASK_HIGH >> 24);
907 rem = (usec % interval) & BEACON_TIME_MASK_LOW;
908
909 return (quot << 24) + rem;
910 }
911
912 /* base is usually what we get from ucode with each received frame,
913 * the same as HW timer counter counting down
914 */
915
916 static __le32 iwl4965_add_beacon_time(u32 base, u32 addon, u32 beacon_interval)
917 {
918 u32 base_low = base & BEACON_TIME_MASK_LOW;
919 u32 addon_low = addon & BEACON_TIME_MASK_LOW;
920 u32 interval = beacon_interval * TIME_UNIT;
921 u32 res = (base & BEACON_TIME_MASK_HIGH) +
922 (addon & BEACON_TIME_MASK_HIGH);
923
924 if (base_low > addon_low)
925 res += base_low - addon_low;
926 else if (base_low < addon_low) {
927 res += interval + base_low - addon_low;
928 res += (1 << 24);
929 } else
930 res += (1 << 24);
931
932 return cpu_to_le32(res);
933 }
934
935 static int iwl4965_get_measurement(struct iwl_priv *priv,
936 struct ieee80211_measurement_params *params,
937 u8 type)
938 {
939 struct iwl4965_spectrum_cmd spectrum;
940 struct iwl_rx_packet *res;
941 struct iwl_host_cmd cmd = {
942 .id = REPLY_SPECTRUM_MEASUREMENT_CMD,
943 .data = (void *)&spectrum,
944 .meta.flags = CMD_WANT_SKB,
945 };
946 u32 add_time = le64_to_cpu(params->start_time);
947 int rc;
948 int spectrum_resp_status;
949 int duration = le16_to_cpu(params->duration);
950
951 if (iwl_is_associated(priv))
952 add_time =
953 iwl4965_usecs_to_beacons(
954 le64_to_cpu(params->start_time) - priv->last_tsf,
955 le16_to_cpu(priv->rxon_timing.beacon_interval));
956
957 memset(&spectrum, 0, sizeof(spectrum));
958
959 spectrum.channel_count = cpu_to_le16(1);
960 spectrum.flags =
961 RXON_FLG_TSF2HOST_MSK | RXON_FLG_ANT_A_MSK | RXON_FLG_DIS_DIV_MSK;
962 spectrum.filter_flags = MEASUREMENT_FILTER_FLAG;
963 cmd.len = sizeof(spectrum);
964 spectrum.len = cpu_to_le16(cmd.len - sizeof(spectrum.len));
965
966 if (iwl_is_associated(priv))
967 spectrum.start_time =
968 iwl4965_add_beacon_time(priv->last_beacon_time,
969 add_time,
970 le16_to_cpu(priv->rxon_timing.beacon_interval));
971 else
972 spectrum.start_time = 0;
973
974 spectrum.channels[0].duration = cpu_to_le32(duration * TIME_UNIT);
975 spectrum.channels[0].channel = params->channel;
976 spectrum.channels[0].type = type;
977 if (priv->active_rxon.flags & RXON_FLG_BAND_24G_MSK)
978 spectrum.flags |= RXON_FLG_BAND_24G_MSK |
979 RXON_FLG_AUTO_DETECT_MSK | RXON_FLG_TGG_PROTECT_MSK;
980
981 rc = iwl_send_cmd_sync(priv, &cmd);
982 if (rc)
983 return rc;
984
985 res = (struct iwl_rx_packet *)cmd.meta.u.skb->data;
986 if (res->hdr.flags & IWL_CMD_FAILED_MSK) {
987 IWL_ERROR("Bad return from REPLY_RX_ON_ASSOC command\n");
988 rc = -EIO;
989 }
990
991 spectrum_resp_status = le16_to_cpu(res->u.spectrum.status);
992 switch (spectrum_resp_status) {
993 case 0: /* Command will be handled */
994 if (res->u.spectrum.id != 0xff) {
995 IWL_DEBUG_INFO
996 ("Replaced existing measurement: %d\n",
997 res->u.spectrum.id);
998 priv->measurement_status &= ~MEASUREMENT_READY;
999 }
1000 priv->measurement_status |= MEASUREMENT_ACTIVE;
1001 rc = 0;
1002 break;
1003
1004 case 1: /* Command will not be handled */
1005 rc = -EAGAIN;
1006 break;
1007 }
1008
1009 dev_kfree_skb_any(cmd.meta.u.skb);
1010
1011 return rc;
1012 }
1013 #endif
1014
1015 /******************************************************************************
1016 *
1017 * Generic RX handler implementations
1018 *
1019 ******************************************************************************/
1020 static void iwl_rx_reply_alive(struct iwl_priv *priv,
1021 struct iwl_rx_mem_buffer *rxb)
1022 {
1023 struct iwl_rx_packet *pkt = (struct iwl_rx_packet *)rxb->skb->data;
1024 struct iwl_alive_resp *palive;
1025 struct delayed_work *pwork;
1026
1027 palive = &pkt->u.alive_frame;
1028
1029 IWL_DEBUG_INFO("Alive ucode status 0x%08X revision "
1030 "0x%01X 0x%01X\n",
1031 palive->is_valid, palive->ver_type,
1032 palive->ver_subtype);
1033
1034 if (palive->ver_subtype == INITIALIZE_SUBTYPE) {
1035 IWL_DEBUG_INFO("Initialization Alive received.\n");
1036 memcpy(&priv->card_alive_init,
1037 &pkt->u.alive_frame,
1038 sizeof(struct iwl_init_alive_resp));
1039 pwork = &priv->init_alive_start;
1040 } else {
1041 IWL_DEBUG_INFO("Runtime Alive received.\n");
1042 memcpy(&priv->card_alive, &pkt->u.alive_frame,
1043 sizeof(struct iwl_alive_resp));
1044 pwork = &priv->alive_start;
1045 }
1046
1047 /* We delay the ALIVE response by 5ms to
1048 * give the HW RF Kill time to activate... */
1049 if (palive->is_valid == UCODE_VALID_OK)
1050 queue_delayed_work(priv->workqueue, pwork,
1051 msecs_to_jiffies(5));
1052 else
1053 IWL_WARNING("uCode did not respond OK.\n");
1054 }
1055
1056 static void iwl4965_rx_reply_error(struct iwl_priv *priv,
1057 struct iwl_rx_mem_buffer *rxb)
1058 {
1059 struct iwl_rx_packet *pkt = (struct iwl_rx_packet *)rxb->skb->data;
1060
1061 IWL_ERROR("Error Reply type 0x%08X cmd %s (0x%02X) "
1062 "seq 0x%04X ser 0x%08X\n",
1063 le32_to_cpu(pkt->u.err_resp.error_type),
1064 get_cmd_string(pkt->u.err_resp.cmd_id),
1065 pkt->u.err_resp.cmd_id,
1066 le16_to_cpu(pkt->u.err_resp.bad_cmd_seq_num),
1067 le32_to_cpu(pkt->u.err_resp.error_info));
1068 }
1069
1070 #define TX_STATUS_ENTRY(x) case TX_STATUS_FAIL_ ## x: return #x
1071
1072 static void iwl4965_rx_csa(struct iwl_priv *priv, struct iwl_rx_mem_buffer *rxb)
1073 {
1074 struct iwl_rx_packet *pkt = (struct iwl_rx_packet *)rxb->skb->data;
1075 struct iwl_rxon_cmd *rxon = (void *)&priv->active_rxon;
1076 struct iwl4965_csa_notification *csa = &(pkt->u.csa_notif);
1077 IWL_DEBUG_11H("CSA notif: channel %d, status %d\n",
1078 le16_to_cpu(csa->channel), le32_to_cpu(csa->status));
1079 rxon->channel = csa->channel;
1080 priv->staging_rxon.channel = csa->channel;
1081 }
1082
1083 static void iwl4965_rx_spectrum_measure_notif(struct iwl_priv *priv,
1084 struct iwl_rx_mem_buffer *rxb)
1085 {
1086 #ifdef CONFIG_IWLAGN_SPECTRUM_MEASUREMENT
1087 struct iwl_rx_packet *pkt = (struct iwl_rx_packet *)rxb->skb->data;
1088 struct iwl4965_spectrum_notification *report = &(pkt->u.spectrum_notif);
1089
1090 if (!report->state) {
1091 IWL_DEBUG(IWL_DL_11H,
1092 "Spectrum Measure Notification: Start\n");
1093 return;
1094 }
1095
1096 memcpy(&priv->measure_report, report, sizeof(*report));
1097 priv->measurement_status |= MEASUREMENT_READY;
1098 #endif
1099 }
1100
1101 static void iwl4965_rx_pm_sleep_notif(struct iwl_priv *priv,
1102 struct iwl_rx_mem_buffer *rxb)
1103 {
1104 #ifdef CONFIG_IWLWIFI_DEBUG
1105 struct iwl_rx_packet *pkt = (struct iwl_rx_packet *)rxb->skb->data;
1106 struct iwl4965_sleep_notification *sleep = &(pkt->u.sleep_notif);
1107 IWL_DEBUG_RX("sleep mode: %d, src: %d\n",
1108 sleep->pm_sleep_mode, sleep->pm_wakeup_src);
1109 #endif
1110 }
1111
1112 static void iwl4965_rx_pm_debug_statistics_notif(struct iwl_priv *priv,
1113 struct iwl_rx_mem_buffer *rxb)
1114 {
1115 struct iwl_rx_packet *pkt = (struct iwl_rx_packet *)rxb->skb->data;
1116 IWL_DEBUG_RADIO("Dumping %d bytes of unhandled "
1117 "notification for %s:\n",
1118 le32_to_cpu(pkt->len), get_cmd_string(pkt->hdr.cmd));
1119 iwl_print_hex_dump(priv, IWL_DL_RADIO, pkt->u.raw, le32_to_cpu(pkt->len));
1120 }
1121
1122 static void iwl4965_bg_beacon_update(struct work_struct *work)
1123 {
1124 struct iwl_priv *priv =
1125 container_of(work, struct iwl_priv, beacon_update);
1126 struct sk_buff *beacon;
1127
1128 /* Pull updated AP beacon from mac80211. will fail if not in AP mode */
1129 beacon = ieee80211_beacon_get(priv->hw, priv->vif);
1130
1131 if (!beacon) {
1132 IWL_ERROR("update beacon failed\n");
1133 return;
1134 }
1135
1136 mutex_lock(&priv->mutex);
1137 /* new beacon skb is allocated every time; dispose previous.*/
1138 if (priv->ibss_beacon)
1139 dev_kfree_skb(priv->ibss_beacon);
1140
1141 priv->ibss_beacon = beacon;
1142 mutex_unlock(&priv->mutex);
1143
1144 iwl4965_send_beacon_cmd(priv);
1145 }
1146
1147 /**
1148 * iwl4965_bg_statistics_periodic - Timer callback to queue statistics
1149 *
1150 * This callback is provided in order to send a statistics request.
1151 *
1152 * This timer function is continually reset to execute within
1153 * REG_RECALIB_PERIOD seconds since the last STATISTICS_NOTIFICATION
1154 * was received. We need to ensure we receive the statistics in order
1155 * to update the temperature used for calibrating the TXPOWER.
1156 */
1157 static void iwl4965_bg_statistics_periodic(unsigned long data)
1158 {
1159 struct iwl_priv *priv = (struct iwl_priv *)data;
1160
1161 if (test_bit(STATUS_EXIT_PENDING, &priv->status))
1162 return;
1163
1164 iwl_send_statistics_request(priv, CMD_ASYNC);
1165 }
1166
1167 static void iwl4965_rx_beacon_notif(struct iwl_priv *priv,
1168 struct iwl_rx_mem_buffer *rxb)
1169 {
1170 #ifdef CONFIG_IWLWIFI_DEBUG
1171 struct iwl_rx_packet *pkt = (struct iwl_rx_packet *)rxb->skb->data;
1172 struct iwl4965_beacon_notif *beacon = &(pkt->u.beacon_status);
1173 u8 rate = iwl_hw_get_rate(beacon->beacon_notify_hdr.rate_n_flags);
1174
1175 IWL_DEBUG_RX("beacon status %x retries %d iss %d "
1176 "tsf %d %d rate %d\n",
1177 le32_to_cpu(beacon->beacon_notify_hdr.u.status) & TX_STATUS_MSK,
1178 beacon->beacon_notify_hdr.failure_frame,
1179 le32_to_cpu(beacon->ibss_mgr_status),
1180 le32_to_cpu(beacon->high_tsf),
1181 le32_to_cpu(beacon->low_tsf), rate);
1182 #endif
1183
1184 if ((priv->iw_mode == NL80211_IFTYPE_AP) &&
1185 (!test_bit(STATUS_EXIT_PENDING, &priv->status)))
1186 queue_work(priv->workqueue, &priv->beacon_update);
1187 }
1188
1189 /* Handle notification from uCode that card's power state is changing
1190 * due to software, hardware, or critical temperature RFKILL */
1191 static void iwl4965_rx_card_state_notif(struct iwl_priv *priv,
1192 struct iwl_rx_mem_buffer *rxb)
1193 {
1194 struct iwl_rx_packet *pkt = (struct iwl_rx_packet *)rxb->skb->data;
1195 u32 flags = le32_to_cpu(pkt->u.card_state_notif.flags);
1196 unsigned long status = priv->status;
1197
1198 IWL_DEBUG_RF_KILL("Card state received: HW:%s SW:%s\n",
1199 (flags & HW_CARD_DISABLED) ? "Kill" : "On",
1200 (flags & SW_CARD_DISABLED) ? "Kill" : "On");
1201
1202 if (flags & (SW_CARD_DISABLED | HW_CARD_DISABLED |
1203 RF_CARD_DISABLED)) {
1204
1205 iwl_write32(priv, CSR_UCODE_DRV_GP1_SET,
1206 CSR_UCODE_DRV_GP1_BIT_CMD_BLOCKED);
1207
1208 if (!iwl_grab_nic_access(priv)) {
1209 iwl_write_direct32(
1210 priv, HBUS_TARG_MBX_C,
1211 HBUS_TARG_MBX_C_REG_BIT_CMD_BLOCKED);
1212
1213 iwl_release_nic_access(priv);
1214 }
1215
1216 if (!(flags & RXON_CARD_DISABLED)) {
1217 iwl_write32(priv, CSR_UCODE_DRV_GP1_CLR,
1218 CSR_UCODE_DRV_GP1_BIT_CMD_BLOCKED);
1219 if (!iwl_grab_nic_access(priv)) {
1220 iwl_write_direct32(
1221 priv, HBUS_TARG_MBX_C,
1222 HBUS_TARG_MBX_C_REG_BIT_CMD_BLOCKED);
1223
1224 iwl_release_nic_access(priv);
1225 }
1226 }
1227
1228 if (flags & RF_CARD_DISABLED) {
1229 iwl_write32(priv, CSR_UCODE_DRV_GP1_SET,
1230 CSR_UCODE_DRV_GP1_REG_BIT_CT_KILL_EXIT);
1231 iwl_read32(priv, CSR_UCODE_DRV_GP1);
1232 if (!iwl_grab_nic_access(priv))
1233 iwl_release_nic_access(priv);
1234 }
1235 }
1236
1237 if (flags & HW_CARD_DISABLED)
1238 set_bit(STATUS_RF_KILL_HW, &priv->status);
1239 else
1240 clear_bit(STATUS_RF_KILL_HW, &priv->status);
1241
1242
1243 if (flags & SW_CARD_DISABLED)
1244 set_bit(STATUS_RF_KILL_SW, &priv->status);
1245 else
1246 clear_bit(STATUS_RF_KILL_SW, &priv->status);
1247
1248 if (!(flags & RXON_CARD_DISABLED))
1249 iwl_scan_cancel(priv);
1250
1251 if ((test_bit(STATUS_RF_KILL_HW, &status) !=
1252 test_bit(STATUS_RF_KILL_HW, &priv->status)) ||
1253 (test_bit(STATUS_RF_KILL_SW, &status) !=
1254 test_bit(STATUS_RF_KILL_SW, &priv->status)))
1255 queue_work(priv->workqueue, &priv->rf_kill);
1256 else
1257 wake_up_interruptible(&priv->wait_command_queue);
1258 }
1259
1260 int iwl4965_set_pwr_src(struct iwl_priv *priv, enum iwl_pwr_src src)
1261 {
1262 int ret;
1263 unsigned long flags;
1264
1265 spin_lock_irqsave(&priv->lock, flags);
1266 ret = iwl_grab_nic_access(priv);
1267 if (ret)
1268 goto err;
1269
1270 if (src == IWL_PWR_SRC_VAUX) {
1271 u32 val;
1272 ret = pci_read_config_dword(priv->pci_dev, PCI_CFG_POWER_SOURCE,
1273 &val);
1274
1275 if (val & PCI_CFG_PMC_PME_FROM_D3COLD_SUPPORT)
1276 iwl_set_bits_mask_prph(priv, APMG_PS_CTRL_REG,
1277 APMG_PS_CTRL_VAL_PWR_SRC_VAUX,
1278 ~APMG_PS_CTRL_MSK_PWR_SRC);
1279 } else {
1280 iwl_set_bits_mask_prph(priv, APMG_PS_CTRL_REG,
1281 APMG_PS_CTRL_VAL_PWR_SRC_VMAIN,
1282 ~APMG_PS_CTRL_MSK_PWR_SRC);
1283 }
1284
1285 iwl_release_nic_access(priv);
1286 err:
1287 spin_unlock_irqrestore(&priv->lock, flags);
1288 return ret;
1289 }
1290
1291 /**
1292 * iwl4965_setup_rx_handlers - Initialize Rx handler callbacks
1293 *
1294 * Setup the RX handlers for each of the reply types sent from the uCode
1295 * to the host.
1296 *
1297 * This function chains into the hardware specific files for them to setup
1298 * any hardware specific handlers as well.
1299 */
1300 static void iwl_setup_rx_handlers(struct iwl_priv *priv)
1301 {
1302 priv->rx_handlers[REPLY_ALIVE] = iwl_rx_reply_alive;
1303 priv->rx_handlers[REPLY_ERROR] = iwl4965_rx_reply_error;
1304 priv->rx_handlers[CHANNEL_SWITCH_NOTIFICATION] = iwl4965_rx_csa;
1305 priv->rx_handlers[SPECTRUM_MEASURE_NOTIFICATION] =
1306 iwl4965_rx_spectrum_measure_notif;
1307 priv->rx_handlers[PM_SLEEP_NOTIFICATION] = iwl4965_rx_pm_sleep_notif;
1308 priv->rx_handlers[PM_DEBUG_STATISTIC_NOTIFIC] =
1309 iwl4965_rx_pm_debug_statistics_notif;
1310 priv->rx_handlers[BEACON_NOTIFICATION] = iwl4965_rx_beacon_notif;
1311
1312 /*
1313 * The same handler is used for both the REPLY to a discrete
1314 * statistics request from the host as well as for the periodic
1315 * statistics notifications (after received beacons) from the uCode.
1316 */
1317 priv->rx_handlers[REPLY_STATISTICS_CMD] = iwl_rx_statistics;
1318 priv->rx_handlers[STATISTICS_NOTIFICATION] = iwl_rx_statistics;
1319
1320 iwl_setup_rx_scan_handlers(priv);
1321
1322 /* status change handler */
1323 priv->rx_handlers[CARD_STATE_NOTIFICATION] = iwl4965_rx_card_state_notif;
1324
1325 priv->rx_handlers[MISSED_BEACONS_NOTIFICATION] =
1326 iwl_rx_missed_beacon_notif;
1327 /* Rx handlers */
1328 priv->rx_handlers[REPLY_RX_PHY_CMD] = iwl_rx_reply_rx_phy;
1329 priv->rx_handlers[REPLY_RX_MPDU_CMD] = iwl_rx_reply_rx;
1330 /* block ack */
1331 priv->rx_handlers[REPLY_COMPRESSED_BA] = iwl_rx_reply_compressed_ba;
1332 /* Set up hardware specific Rx handlers */
1333 priv->cfg->ops->lib->rx_handler_setup(priv);
1334 }
1335
1336 /*
1337 * this should be called while priv->lock is locked
1338 */
1339 static void __iwl_rx_replenish(struct iwl_priv *priv)
1340 {
1341 iwl_rx_allocate(priv);
1342 iwl_rx_queue_restock(priv);
1343 }
1344
1345
1346 /**
1347 * iwl_rx_handle - Main entry function for receiving responses from uCode
1348 *
1349 * Uses the priv->rx_handlers callback function array to invoke
1350 * the appropriate handlers, including command responses,
1351 * frame-received notifications, and other notifications.
1352 */
1353 void iwl_rx_handle(struct iwl_priv *priv)
1354 {
1355 struct iwl_rx_mem_buffer *rxb;
1356 struct iwl_rx_packet *pkt;
1357 struct iwl_rx_queue *rxq = &priv->rxq;
1358 u32 r, i;
1359 int reclaim;
1360 unsigned long flags;
1361 u8 fill_rx = 0;
1362 u32 count = 8;
1363
1364 /* uCode's read index (stored in shared DRAM) indicates the last Rx
1365 * buffer that the driver may process (last buffer filled by ucode). */
1366 r = priv->cfg->ops->lib->shared_mem_rx_idx(priv);
1367 i = rxq->read;
1368
1369 /* Rx interrupt, but nothing sent from uCode */
1370 if (i == r)
1371 IWL_DEBUG(IWL_DL_RX, "r = %d, i = %d\n", r, i);
1372
1373 if (iwl_rx_queue_space(rxq) > (RX_QUEUE_SIZE / 2))
1374 fill_rx = 1;
1375
1376 while (i != r) {
1377 rxb = rxq->queue[i];
1378
1379 /* If an RXB doesn't have a Rx queue slot associated with it,
1380 * then a bug has been introduced in the queue refilling
1381 * routines -- catch it here */
1382 BUG_ON(rxb == NULL);
1383
1384 rxq->queue[i] = NULL;
1385
1386 pci_dma_sync_single_for_cpu(priv->pci_dev, rxb->dma_addr,
1387 priv->hw_params.rx_buf_size,
1388 PCI_DMA_FROMDEVICE);
1389 pkt = (struct iwl_rx_packet *)rxb->skb->data;
1390
1391 /* Reclaim a command buffer only if this packet is a response
1392 * to a (driver-originated) command.
1393 * If the packet (e.g. Rx frame) originated from uCode,
1394 * there is no command buffer to reclaim.
1395 * Ucode should set SEQ_RX_FRAME bit if ucode-originated,
1396 * but apparently a few don't get set; catch them here. */
1397 reclaim = !(pkt->hdr.sequence & SEQ_RX_FRAME) &&
1398 (pkt->hdr.cmd != REPLY_RX_PHY_CMD) &&
1399 (pkt->hdr.cmd != REPLY_RX) &&
1400 (pkt->hdr.cmd != REPLY_COMPRESSED_BA) &&
1401 (pkt->hdr.cmd != STATISTICS_NOTIFICATION) &&
1402 (pkt->hdr.cmd != REPLY_TX);
1403
1404 /* Based on type of command response or notification,
1405 * handle those that need handling via function in
1406 * rx_handlers table. See iwl4965_setup_rx_handlers() */
1407 if (priv->rx_handlers[pkt->hdr.cmd]) {
1408 IWL_DEBUG(IWL_DL_RX, "r = %d, i = %d, %s, 0x%02x\n", r,
1409 i, get_cmd_string(pkt->hdr.cmd), pkt->hdr.cmd);
1410 priv->rx_handlers[pkt->hdr.cmd] (priv, rxb);
1411 } else {
1412 /* No handling needed */
1413 IWL_DEBUG(IWL_DL_RX,
1414 "r %d i %d No handler needed for %s, 0x%02x\n",
1415 r, i, get_cmd_string(pkt->hdr.cmd),
1416 pkt->hdr.cmd);
1417 }
1418
1419 if (reclaim) {
1420 /* Invoke any callbacks, transfer the skb to caller, and
1421 * fire off the (possibly) blocking iwl_send_cmd()
1422 * as we reclaim the driver command queue */
1423 if (rxb && rxb->skb)
1424 iwl_tx_cmd_complete(priv, rxb);
1425 else
1426 IWL_WARNING("Claim null rxb?\n");
1427 }
1428
1429 /* For now we just don't re-use anything. We can tweak this
1430 * later to try and re-use notification packets and SKBs that
1431 * fail to Rx correctly */
1432 if (rxb->skb != NULL) {
1433 priv->alloc_rxb_skb--;
1434 dev_kfree_skb_any(rxb->skb);
1435 rxb->skb = NULL;
1436 }
1437
1438 pci_unmap_single(priv->pci_dev, rxb->dma_addr,
1439 priv->hw_params.rx_buf_size,
1440 PCI_DMA_FROMDEVICE);
1441 spin_lock_irqsave(&rxq->lock, flags);
1442 list_add_tail(&rxb->list, &priv->rxq.rx_used);
1443 spin_unlock_irqrestore(&rxq->lock, flags);
1444 i = (i + 1) & RX_QUEUE_MASK;
1445 /* If there are a lot of unused frames,
1446 * restock the Rx queue so ucode wont assert. */
1447 if (fill_rx) {
1448 count++;
1449 if (count >= 8) {
1450 priv->rxq.read = i;
1451 __iwl_rx_replenish(priv);
1452 count = 0;
1453 }
1454 }
1455 }
1456
1457 /* Backtrack one entry */
1458 priv->rxq.read = i;
1459 iwl_rx_queue_restock(priv);
1460 }
1461
1462 #ifdef CONFIG_IWLWIFI_DEBUG
1463 static void iwl4965_print_rx_config_cmd(struct iwl_priv *priv)
1464 {
1465 struct iwl_rxon_cmd *rxon = &priv->staging_rxon;
1466
1467 IWL_DEBUG_RADIO("RX CONFIG:\n");
1468 iwl_print_hex_dump(priv, IWL_DL_RADIO, (u8 *) rxon, sizeof(*rxon));
1469 IWL_DEBUG_RADIO("u16 channel: 0x%x\n", le16_to_cpu(rxon->channel));
1470 IWL_DEBUG_RADIO("u32 flags: 0x%08X\n", le32_to_cpu(rxon->flags));
1471 IWL_DEBUG_RADIO("u32 filter_flags: 0x%08x\n",
1472 le32_to_cpu(rxon->filter_flags));
1473 IWL_DEBUG_RADIO("u8 dev_type: 0x%x\n", rxon->dev_type);
1474 IWL_DEBUG_RADIO("u8 ofdm_basic_rates: 0x%02x\n",
1475 rxon->ofdm_basic_rates);
1476 IWL_DEBUG_RADIO("u8 cck_basic_rates: 0x%02x\n", rxon->cck_basic_rates);
1477 IWL_DEBUG_RADIO("u8[6] node_addr: %pM\n", rxon->node_addr);
1478 IWL_DEBUG_RADIO("u8[6] bssid_addr: %pM\n", rxon->bssid_addr);
1479 IWL_DEBUG_RADIO("u16 assoc_id: 0x%x\n", le16_to_cpu(rxon->assoc_id));
1480 }
1481 #endif
1482
1483 static void iwl4965_enable_interrupts(struct iwl_priv *priv)
1484 {
1485 IWL_DEBUG_ISR("Enabling interrupts\n");
1486 set_bit(STATUS_INT_ENABLED, &priv->status);
1487 iwl_write32(priv, CSR_INT_MASK, CSR_INI_SET_MASK);
1488 }
1489
1490 /* call this function to flush any scheduled tasklet */
1491 static inline void iwl_synchronize_irq(struct iwl_priv *priv)
1492 {
1493 /* wait to make sure we flush pedding tasklet*/
1494 synchronize_irq(priv->pci_dev->irq);
1495 tasklet_kill(&priv->irq_tasklet);
1496 }
1497
1498 static inline void iwl4965_disable_interrupts(struct iwl_priv *priv)
1499 {
1500 clear_bit(STATUS_INT_ENABLED, &priv->status);
1501
1502 /* disable interrupts from uCode/NIC to host */
1503 iwl_write32(priv, CSR_INT_MASK, 0x00000000);
1504
1505 /* acknowledge/clear/reset any interrupts still pending
1506 * from uCode or flow handler (Rx/Tx DMA) */
1507 iwl_write32(priv, CSR_INT, 0xffffffff);
1508 iwl_write32(priv, CSR_FH_INT_STATUS, 0xffffffff);
1509 IWL_DEBUG_ISR("Disabled interrupts\n");
1510 }
1511
1512
1513 /**
1514 * iwl4965_irq_handle_error - called for HW or SW error interrupt from card
1515 */
1516 static void iwl4965_irq_handle_error(struct iwl_priv *priv)
1517 {
1518 /* Set the FW error flag -- cleared on iwl4965_down */
1519 set_bit(STATUS_FW_ERROR, &priv->status);
1520
1521 /* Cancel currently queued command. */
1522 clear_bit(STATUS_HCMD_ACTIVE, &priv->status);
1523
1524 #ifdef CONFIG_IWLWIFI_DEBUG
1525 if (priv->debug_level & IWL_DL_FW_ERRORS) {
1526 iwl_dump_nic_error_log(priv);
1527 iwl_dump_nic_event_log(priv);
1528 iwl4965_print_rx_config_cmd(priv);
1529 }
1530 #endif
1531
1532 wake_up_interruptible(&priv->wait_command_queue);
1533
1534 /* Keep the restart process from trying to send host
1535 * commands by clearing the INIT status bit */
1536 clear_bit(STATUS_READY, &priv->status);
1537
1538 if (!test_bit(STATUS_EXIT_PENDING, &priv->status)) {
1539 IWL_DEBUG(IWL_DL_FW_ERRORS,
1540 "Restarting adapter due to uCode error.\n");
1541
1542 if (iwl_is_associated(priv)) {
1543 memcpy(&priv->recovery_rxon, &priv->active_rxon,
1544 sizeof(priv->recovery_rxon));
1545 priv->error_recovering = 1;
1546 }
1547 if (priv->cfg->mod_params->restart_fw)
1548 queue_work(priv->workqueue, &priv->restart);
1549 }
1550 }
1551
1552 static void iwl4965_error_recovery(struct iwl_priv *priv)
1553 {
1554 unsigned long flags;
1555
1556 memcpy(&priv->staging_rxon, &priv->recovery_rxon,
1557 sizeof(priv->staging_rxon));
1558 priv->staging_rxon.filter_flags &= ~RXON_FILTER_ASSOC_MSK;
1559 iwl4965_commit_rxon(priv);
1560
1561 iwl_rxon_add_station(priv, priv->bssid, 1);
1562
1563 spin_lock_irqsave(&priv->lock, flags);
1564 priv->assoc_id = le16_to_cpu(priv->staging_rxon.assoc_id);
1565 priv->error_recovering = 0;
1566 spin_unlock_irqrestore(&priv->lock, flags);
1567 }
1568
1569 static void iwl4965_irq_tasklet(struct iwl_priv *priv)
1570 {
1571 u32 inta, handled = 0;
1572 u32 inta_fh;
1573 unsigned long flags;
1574 #ifdef CONFIG_IWLWIFI_DEBUG
1575 u32 inta_mask;
1576 #endif
1577
1578 spin_lock_irqsave(&priv->lock, flags);
1579
1580 /* Ack/clear/reset pending uCode interrupts.
1581 * Note: Some bits in CSR_INT are "OR" of bits in CSR_FH_INT_STATUS,
1582 * and will clear only when CSR_FH_INT_STATUS gets cleared. */
1583 inta = iwl_read32(priv, CSR_INT);
1584 iwl_write32(priv, CSR_INT, inta);
1585
1586 /* Ack/clear/reset pending flow-handler (DMA) interrupts.
1587 * Any new interrupts that happen after this, either while we're
1588 * in this tasklet, or later, will show up in next ISR/tasklet. */
1589 inta_fh = iwl_read32(priv, CSR_FH_INT_STATUS);
1590 iwl_write32(priv, CSR_FH_INT_STATUS, inta_fh);
1591
1592 #ifdef CONFIG_IWLWIFI_DEBUG
1593 if (priv->debug_level & IWL_DL_ISR) {
1594 /* just for debug */
1595 inta_mask = iwl_read32(priv, CSR_INT_MASK);
1596 IWL_DEBUG_ISR("inta 0x%08x, enabled 0x%08x, fh 0x%08x\n",
1597 inta, inta_mask, inta_fh);
1598 }
1599 #endif
1600
1601 /* Since CSR_INT and CSR_FH_INT_STATUS reads and clears are not
1602 * atomic, make sure that inta covers all the interrupts that
1603 * we've discovered, even if FH interrupt came in just after
1604 * reading CSR_INT. */
1605 if (inta_fh & CSR49_FH_INT_RX_MASK)
1606 inta |= CSR_INT_BIT_FH_RX;
1607 if (inta_fh & CSR49_FH_INT_TX_MASK)
1608 inta |= CSR_INT_BIT_FH_TX;
1609
1610 /* Now service all interrupt bits discovered above. */
1611 if (inta & CSR_INT_BIT_HW_ERR) {
1612 IWL_ERROR("Microcode HW error detected. Restarting.\n");
1613
1614 /* Tell the device to stop sending interrupts */
1615 iwl4965_disable_interrupts(priv);
1616
1617 iwl4965_irq_handle_error(priv);
1618
1619 handled |= CSR_INT_BIT_HW_ERR;
1620
1621 spin_unlock_irqrestore(&priv->lock, flags);
1622
1623 return;
1624 }
1625
1626 #ifdef CONFIG_IWLWIFI_DEBUG
1627 if (priv->debug_level & (IWL_DL_ISR)) {
1628 /* NIC fires this, but we don't use it, redundant with WAKEUP */
1629 if (inta & CSR_INT_BIT_SCD)
1630 IWL_DEBUG_ISR("Scheduler finished to transmit "
1631 "the frame/frames.\n");
1632
1633 /* Alive notification via Rx interrupt will do the real work */
1634 if (inta & CSR_INT_BIT_ALIVE)
1635 IWL_DEBUG_ISR("Alive interrupt\n");
1636 }
1637 #endif
1638 /* Safely ignore these bits for debug checks below */
1639 inta &= ~(CSR_INT_BIT_SCD | CSR_INT_BIT_ALIVE);
1640
1641 /* HW RF KILL switch toggled */
1642 if (inta & CSR_INT_BIT_RF_KILL) {
1643 int hw_rf_kill = 0;
1644 if (!(iwl_read32(priv, CSR_GP_CNTRL) &
1645 CSR_GP_CNTRL_REG_FLAG_HW_RF_KILL_SW))
1646 hw_rf_kill = 1;
1647
1648 IWL_DEBUG(IWL_DL_RF_KILL, "RF_KILL bit toggled to %s.\n",
1649 hw_rf_kill ? "disable radio":"enable radio");
1650
1651 /* driver only loads ucode once setting the interface up.
1652 * the driver as well won't allow loading if RFKILL is set
1653 * therefore no need to restart the driver from this handler
1654 */
1655 if (!hw_rf_kill && !test_bit(STATUS_ALIVE, &priv->status))
1656 clear_bit(STATUS_RF_KILL_HW, &priv->status);
1657
1658 handled |= CSR_INT_BIT_RF_KILL;
1659 }
1660
1661 /* Chip got too hot and stopped itself */
1662 if (inta & CSR_INT_BIT_CT_KILL) {
1663 IWL_ERROR("Microcode CT kill error detected.\n");
1664 handled |= CSR_INT_BIT_CT_KILL;
1665 }
1666
1667 /* Error detected by uCode */
1668 if (inta & CSR_INT_BIT_SW_ERR) {
1669 IWL_ERROR("Microcode SW error detected. Restarting 0x%X.\n",
1670 inta);
1671 iwl4965_irq_handle_error(priv);
1672 handled |= CSR_INT_BIT_SW_ERR;
1673 }
1674
1675 /* uCode wakes up after power-down sleep */
1676 if (inta & CSR_INT_BIT_WAKEUP) {
1677 IWL_DEBUG_ISR("Wakeup interrupt\n");
1678 iwl_rx_queue_update_write_ptr(priv, &priv->rxq);
1679 iwl_txq_update_write_ptr(priv, &priv->txq[0]);
1680 iwl_txq_update_write_ptr(priv, &priv->txq[1]);
1681 iwl_txq_update_write_ptr(priv, &priv->txq[2]);
1682 iwl_txq_update_write_ptr(priv, &priv->txq[3]);
1683 iwl_txq_update_write_ptr(priv, &priv->txq[4]);
1684 iwl_txq_update_write_ptr(priv, &priv->txq[5]);
1685
1686 handled |= CSR_INT_BIT_WAKEUP;
1687 }
1688
1689 /* All uCode command responses, including Tx command responses,
1690 * Rx "responses" (frame-received notification), and other
1691 * notifications from uCode come through here*/
1692 if (inta & (CSR_INT_BIT_FH_RX | CSR_INT_BIT_SW_RX)) {
1693 iwl_rx_handle(priv);
1694 handled |= (CSR_INT_BIT_FH_RX | CSR_INT_BIT_SW_RX);
1695 }
1696
1697 if (inta & CSR_INT_BIT_FH_TX) {
1698 IWL_DEBUG_ISR("Tx interrupt\n");
1699 handled |= CSR_INT_BIT_FH_TX;
1700 /* FH finished to write, send event */
1701 priv->ucode_write_complete = 1;
1702 wake_up_interruptible(&priv->wait_command_queue);
1703 }
1704
1705 if (inta & ~handled)
1706 IWL_ERROR("Unhandled INTA bits 0x%08x\n", inta & ~handled);
1707
1708 if (inta & ~CSR_INI_SET_MASK) {
1709 IWL_WARNING("Disabled INTA bits 0x%08x were pending\n",
1710 inta & ~CSR_INI_SET_MASK);
1711 IWL_WARNING(" with FH_INT = 0x%08x\n", inta_fh);
1712 }
1713
1714 /* Re-enable all interrupts */
1715 /* only Re-enable if diabled by irq */
1716 if (test_bit(STATUS_INT_ENABLED, &priv->status))
1717 iwl4965_enable_interrupts(priv);
1718
1719 #ifdef CONFIG_IWLWIFI_DEBUG
1720 if (priv->debug_level & (IWL_DL_ISR)) {
1721 inta = iwl_read32(priv, CSR_INT);
1722 inta_mask = iwl_read32(priv, CSR_INT_MASK);
1723 inta_fh = iwl_read32(priv, CSR_FH_INT_STATUS);
1724 IWL_DEBUG_ISR("End inta 0x%08x, enabled 0x%08x, fh 0x%08x, "
1725 "flags 0x%08lx\n", inta, inta_mask, inta_fh, flags);
1726 }
1727 #endif
1728 spin_unlock_irqrestore(&priv->lock, flags);
1729 }
1730
1731 static irqreturn_t iwl4965_isr(int irq, void *data)
1732 {
1733 struct iwl_priv *priv = data;
1734 u32 inta, inta_mask;
1735 u32 inta_fh;
1736 if (!priv)
1737 return IRQ_NONE;
1738
1739 spin_lock(&priv->lock);
1740
1741 /* Disable (but don't clear!) interrupts here to avoid
1742 * back-to-back ISRs and sporadic interrupts from our NIC.
1743 * If we have something to service, the tasklet will re-enable ints.
1744 * If we *don't* have something, we'll re-enable before leaving here. */
1745 inta_mask = iwl_read32(priv, CSR_INT_MASK); /* just for debug */
1746 iwl_write32(priv, CSR_INT_MASK, 0x00000000);
1747
1748 /* Discover which interrupts are active/pending */
1749 inta = iwl_read32(priv, CSR_INT);
1750 inta_fh = iwl_read32(priv, CSR_FH_INT_STATUS);
1751
1752 /* Ignore interrupt if there's nothing in NIC to service.
1753 * This may be due to IRQ shared with another device,
1754 * or due to sporadic interrupts thrown from our NIC. */
1755 if (!inta && !inta_fh) {
1756 IWL_DEBUG_ISR("Ignore interrupt, inta == 0, inta_fh == 0\n");
1757 goto none;
1758 }
1759
1760 if ((inta == 0xFFFFFFFF) || ((inta & 0xFFFFFFF0) == 0xa5a5a5a0)) {
1761 /* Hardware disappeared. It might have already raised
1762 * an interrupt */
1763 IWL_WARNING("HARDWARE GONE?? INTA == 0x%080x\n", inta);
1764 goto unplugged;
1765 }
1766
1767 IWL_DEBUG_ISR("ISR inta 0x%08x, enabled 0x%08x, fh 0x%08x\n",
1768 inta, inta_mask, inta_fh);
1769
1770 inta &= ~CSR_INT_BIT_SCD;
1771
1772 /* iwl4965_irq_tasklet() will service interrupts and re-enable them */
1773 if (likely(inta || inta_fh))
1774 tasklet_schedule(&priv->irq_tasklet);
1775
1776 unplugged:
1777 spin_unlock(&priv->lock);
1778 return IRQ_HANDLED;
1779
1780 none:
1781 /* re-enable interrupts here since we don't have anything to service. */
1782 /* only Re-enable if diabled by irq */
1783 if (test_bit(STATUS_INT_ENABLED, &priv->status))
1784 iwl4965_enable_interrupts(priv);
1785 spin_unlock(&priv->lock);
1786 return IRQ_NONE;
1787 }
1788
1789 /******************************************************************************
1790 *
1791 * uCode download functions
1792 *
1793 ******************************************************************************/
1794
1795 static void iwl4965_dealloc_ucode_pci(struct iwl_priv *priv)
1796 {
1797 iwl_free_fw_desc(priv->pci_dev, &priv->ucode_code);
1798 iwl_free_fw_desc(priv->pci_dev, &priv->ucode_data);
1799 iwl_free_fw_desc(priv->pci_dev, &priv->ucode_data_backup);
1800 iwl_free_fw_desc(priv->pci_dev, &priv->ucode_init);
1801 iwl_free_fw_desc(priv->pci_dev, &priv->ucode_init_data);
1802 iwl_free_fw_desc(priv->pci_dev, &priv->ucode_boot);
1803 }
1804
1805 static void iwl4965_nic_start(struct iwl_priv *priv)
1806 {
1807 /* Remove all resets to allow NIC to operate */
1808 iwl_write32(priv, CSR_RESET, 0);
1809 }
1810
1811
1812 /**
1813 * iwl4965_read_ucode - Read uCode images from disk file.
1814 *
1815 * Copy into buffers for card to fetch via bus-mastering
1816 */
1817 static int iwl4965_read_ucode(struct iwl_priv *priv)
1818 {
1819 struct iwl_ucode *ucode;
1820 int ret;
1821 const struct firmware *ucode_raw;
1822 const char *name = priv->cfg->fw_name;
1823 u8 *src;
1824 size_t len;
1825 u32 ver, inst_size, data_size, init_size, init_data_size, boot_size;
1826
1827 /* Ask kernel firmware_class module to get the boot firmware off disk.
1828 * request_firmware() is synchronous, file is in memory on return. */
1829 ret = request_firmware(&ucode_raw, name, &priv->pci_dev->dev);
1830 if (ret < 0) {
1831 IWL_ERROR("%s firmware file req failed: Reason %d\n",
1832 name, ret);
1833 goto error;
1834 }
1835
1836 IWL_DEBUG_INFO("Got firmware '%s' file (%zd bytes) from disk\n",
1837 name, ucode_raw->size);
1838
1839 /* Make sure that we got at least our header! */
1840 if (ucode_raw->size < sizeof(*ucode)) {
1841 IWL_ERROR("File size way too small!\n");
1842 ret = -EINVAL;
1843 goto err_release;
1844 }
1845
1846 /* Data from ucode file: header followed by uCode images */
1847 ucode = (void *)ucode_raw->data;
1848
1849 ver = le32_to_cpu(ucode->ver);
1850 inst_size = le32_to_cpu(ucode->inst_size);
1851 data_size = le32_to_cpu(ucode->data_size);
1852 init_size = le32_to_cpu(ucode->init_size);
1853 init_data_size = le32_to_cpu(ucode->init_data_size);
1854 boot_size = le32_to_cpu(ucode->boot_size);
1855
1856 IWL_DEBUG_INFO("f/w package hdr ucode version = 0x%x\n", ver);
1857 IWL_DEBUG_INFO("f/w package hdr runtime inst size = %u\n",
1858 inst_size);
1859 IWL_DEBUG_INFO("f/w package hdr runtime data size = %u\n",
1860 data_size);
1861 IWL_DEBUG_INFO("f/w package hdr init inst size = %u\n",
1862 init_size);
1863 IWL_DEBUG_INFO("f/w package hdr init data size = %u\n",
1864 init_data_size);
1865 IWL_DEBUG_INFO("f/w package hdr boot inst size = %u\n",
1866 boot_size);
1867
1868 /* Verify size of file vs. image size info in file's header */
1869 if (ucode_raw->size < sizeof(*ucode) +
1870 inst_size + data_size + init_size +
1871 init_data_size + boot_size) {
1872
1873 IWL_DEBUG_INFO("uCode file size %d too small\n",
1874 (int)ucode_raw->size);
1875 ret = -EINVAL;
1876 goto err_release;
1877 }
1878
1879 /* Verify that uCode images will fit in card's SRAM */
1880 if (inst_size > priv->hw_params.max_inst_size) {
1881 IWL_DEBUG_INFO("uCode instr len %d too large to fit in\n",
1882 inst_size);
1883 ret = -EINVAL;
1884 goto err_release;
1885 }
1886
1887 if (data_size > priv->hw_params.max_data_size) {
1888 IWL_DEBUG_INFO("uCode data len %d too large to fit in\n",
1889 data_size);
1890 ret = -EINVAL;
1891 goto err_release;
1892 }
1893 if (init_size > priv->hw_params.max_inst_size) {
1894 IWL_DEBUG_INFO
1895 ("uCode init instr len %d too large to fit in\n",
1896 init_size);
1897 ret = -EINVAL;
1898 goto err_release;
1899 }
1900 if (init_data_size > priv->hw_params.max_data_size) {
1901 IWL_DEBUG_INFO
1902 ("uCode init data len %d too large to fit in\n",
1903 init_data_size);
1904 ret = -EINVAL;
1905 goto err_release;
1906 }
1907 if (boot_size > priv->hw_params.max_bsm_size) {
1908 IWL_DEBUG_INFO
1909 ("uCode boot instr len %d too large to fit in\n",
1910 boot_size);
1911 ret = -EINVAL;
1912 goto err_release;
1913 }
1914
1915 /* Allocate ucode buffers for card's bus-master loading ... */
1916
1917 /* Runtime instructions and 2 copies of data:
1918 * 1) unmodified from disk
1919 * 2) backup cache for save/restore during power-downs */
1920 priv->ucode_code.len = inst_size;
1921 iwl_alloc_fw_desc(priv->pci_dev, &priv->ucode_code);
1922
1923 priv->ucode_data.len = data_size;
1924 iwl_alloc_fw_desc(priv->pci_dev, &priv->ucode_data);
1925
1926 priv->ucode_data_backup.len = data_size;
1927 iwl_alloc_fw_desc(priv->pci_dev, &priv->ucode_data_backup);
1928
1929 /* Initialization instructions and data */
1930 if (init_size && init_data_size) {
1931 priv->ucode_init.len = init_size;
1932 iwl_alloc_fw_desc(priv->pci_dev, &priv->ucode_init);
1933
1934 priv->ucode_init_data.len = init_data_size;
1935 iwl_alloc_fw_desc(priv->pci_dev, &priv->ucode_init_data);
1936
1937 if (!priv->ucode_init.v_addr || !priv->ucode_init_data.v_addr)
1938 goto err_pci_alloc;
1939 }
1940
1941 /* Bootstrap (instructions only, no data) */
1942 if (boot_size) {
1943 priv->ucode_boot.len = boot_size;
1944 iwl_alloc_fw_desc(priv->pci_dev, &priv->ucode_boot);
1945
1946 if (!priv->ucode_boot.v_addr)
1947 goto err_pci_alloc;
1948 }
1949
1950 /* Copy images into buffers for card's bus-master reads ... */
1951
1952 /* Runtime instructions (first block of data in file) */
1953 src = &ucode->data[0];
1954 len = priv->ucode_code.len;
1955 IWL_DEBUG_INFO("Copying (but not loading) uCode instr len %Zd\n", len);
1956 memcpy(priv->ucode_code.v_addr, src, len);
1957 IWL_DEBUG_INFO("uCode instr buf vaddr = 0x%p, paddr = 0x%08x\n",
1958 priv->ucode_code.v_addr, (u32)priv->ucode_code.p_addr);
1959
1960 /* Runtime data (2nd block)
1961 * NOTE: Copy into backup buffer will be done in iwl4965_up() */
1962 src = &ucode->data[inst_size];
1963 len = priv->ucode_data.len;
1964 IWL_DEBUG_INFO("Copying (but not loading) uCode data len %Zd\n", len);
1965 memcpy(priv->ucode_data.v_addr, src, len);
1966 memcpy(priv->ucode_data_backup.v_addr, src, len);
1967
1968 /* Initialization instructions (3rd block) */
1969 if (init_size) {
1970 src = &ucode->data[inst_size + data_size];
1971 len = priv->ucode_init.len;
1972 IWL_DEBUG_INFO("Copying (but not loading) init instr len %Zd\n",
1973 len);
1974 memcpy(priv->ucode_init.v_addr, src, len);
1975 }
1976
1977 /* Initialization data (4th block) */
1978 if (init_data_size) {
1979 src = &ucode->data[inst_size + data_size + init_size];
1980 len = priv->ucode_init_data.len;
1981 IWL_DEBUG_INFO("Copying (but not loading) init data len %Zd\n",
1982 len);
1983 memcpy(priv->ucode_init_data.v_addr, src, len);
1984 }
1985
1986 /* Bootstrap instructions (5th block) */
1987 src = &ucode->data[inst_size + data_size + init_size + init_data_size];
1988 len = priv->ucode_boot.len;
1989 IWL_DEBUG_INFO("Copying (but not loading) boot instr len %Zd\n", len);
1990 memcpy(priv->ucode_boot.v_addr, src, len);
1991
1992 /* We have our copies now, allow OS release its copies */
1993 release_firmware(ucode_raw);
1994 return 0;
1995
1996 err_pci_alloc:
1997 IWL_ERROR("failed to allocate pci memory\n");
1998 ret = -ENOMEM;
1999 iwl4965_dealloc_ucode_pci(priv);
2000
2001 err_release:
2002 release_firmware(ucode_raw);
2003
2004 error:
2005 return ret;
2006 }
2007
2008 /**
2009 * iwl_alive_start - called after REPLY_ALIVE notification received
2010 * from protocol/runtime uCode (initialization uCode's
2011 * Alive gets handled by iwl_init_alive_start()).
2012 */
2013 static void iwl_alive_start(struct iwl_priv *priv)
2014 {
2015 int ret = 0;
2016
2017 IWL_DEBUG_INFO("Runtime Alive received.\n");
2018
2019 if (priv->card_alive.is_valid != UCODE_VALID_OK) {
2020 /* We had an error bringing up the hardware, so take it
2021 * all the way back down so we can try again */
2022 IWL_DEBUG_INFO("Alive failed.\n");
2023 goto restart;
2024 }
2025
2026 /* Initialize uCode has loaded Runtime uCode ... verify inst image.
2027 * This is a paranoid check, because we would not have gotten the
2028 * "runtime" alive if code weren't properly loaded. */
2029 if (iwl_verify_ucode(priv)) {
2030 /* Runtime instruction load was bad;
2031 * take it all the way back down so we can try again */
2032 IWL_DEBUG_INFO("Bad runtime uCode load.\n");
2033 goto restart;
2034 }
2035
2036 iwl_clear_stations_table(priv);
2037 ret = priv->cfg->ops->lib->alive_notify(priv);
2038 if (ret) {
2039 IWL_WARNING("Could not complete ALIVE transition [ntf]: %d\n",
2040 ret);
2041 goto restart;
2042 }
2043
2044 /* After the ALIVE response, we can send host commands to 4965 uCode */
2045 set_bit(STATUS_ALIVE, &priv->status);
2046
2047 if (iwl_is_rfkill(priv))
2048 return;
2049
2050 ieee80211_wake_queues(priv->hw);
2051
2052 priv->active_rate = priv->rates_mask;
2053 priv->active_rate_basic = priv->rates_mask & IWL_BASIC_RATES_MASK;
2054
2055 if (iwl_is_associated(priv)) {
2056 struct iwl_rxon_cmd *active_rxon =
2057 (struct iwl_rxon_cmd *)&priv->active_rxon;
2058
2059 memcpy(&priv->staging_rxon, &priv->active_rxon,
2060 sizeof(priv->staging_rxon));
2061 active_rxon->filter_flags &= ~RXON_FILTER_ASSOC_MSK;
2062 } else {
2063 /* Initialize our rx_config data */
2064 iwl4965_connection_init_rx_config(priv);
2065 memcpy(priv->staging_rxon.node_addr, priv->mac_addr, ETH_ALEN);
2066 }
2067
2068 /* Configure Bluetooth device coexistence support */
2069 iwl4965_send_bt_config(priv);
2070
2071 iwl_reset_run_time_calib(priv);
2072
2073 /* Configure the adapter for unassociated operation */
2074 iwl4965_commit_rxon(priv);
2075
2076 /* At this point, the NIC is initialized and operational */
2077 iwl_rf_kill_ct_config(priv);
2078
2079 iwl_leds_register(priv);
2080
2081 IWL_DEBUG_INFO("ALIVE processing complete.\n");
2082 set_bit(STATUS_READY, &priv->status);
2083 wake_up_interruptible(&priv->wait_command_queue);
2084
2085 if (priv->error_recovering)
2086 iwl4965_error_recovery(priv);
2087
2088 iwl_power_update_mode(priv, 1);
2089 ieee80211_notify_mac(priv->hw, IEEE80211_NOTIFY_RE_ASSOC);
2090
2091 if (test_and_clear_bit(STATUS_MODE_PENDING, &priv->status))
2092 iwl4965_set_mode(priv, priv->iw_mode);
2093
2094 return;
2095
2096 restart:
2097 queue_work(priv->workqueue, &priv->restart);
2098 }
2099
2100 static void iwl_cancel_deferred_work(struct iwl_priv *priv);
2101
2102 static void __iwl4965_down(struct iwl_priv *priv)
2103 {
2104 unsigned long flags;
2105 int exit_pending = test_bit(STATUS_EXIT_PENDING, &priv->status);
2106
2107 IWL_DEBUG_INFO(DRV_NAME " is going down\n");
2108
2109 if (!exit_pending)
2110 set_bit(STATUS_EXIT_PENDING, &priv->status);
2111
2112 iwl_leds_unregister(priv);
2113
2114 iwl_clear_stations_table(priv);
2115
2116 /* Unblock any waiting calls */
2117 wake_up_interruptible_all(&priv->wait_command_queue);
2118
2119 /* Wipe out the EXIT_PENDING status bit if we are not actually
2120 * exiting the module */
2121 if (!exit_pending)
2122 clear_bit(STATUS_EXIT_PENDING, &priv->status);
2123
2124 /* stop and reset the on-board processor */
2125 iwl_write32(priv, CSR_RESET, CSR_RESET_REG_FLAG_NEVO_RESET);
2126
2127 /* tell the device to stop sending interrupts */
2128 spin_lock_irqsave(&priv->lock, flags);
2129 iwl4965_disable_interrupts(priv);
2130 spin_unlock_irqrestore(&priv->lock, flags);
2131 iwl_synchronize_irq(priv);
2132
2133 if (priv->mac80211_registered)
2134 ieee80211_stop_queues(priv->hw);
2135
2136 /* If we have not previously called iwl4965_init() then
2137 * clear all bits but the RF Kill and SUSPEND bits and return */
2138 if (!iwl_is_init(priv)) {
2139 priv->status = test_bit(STATUS_RF_KILL_HW, &priv->status) <<
2140 STATUS_RF_KILL_HW |
2141 test_bit(STATUS_RF_KILL_SW, &priv->status) <<
2142 STATUS_RF_KILL_SW |
2143 test_bit(STATUS_GEO_CONFIGURED, &priv->status) <<
2144 STATUS_GEO_CONFIGURED |
2145 test_bit(STATUS_IN_SUSPEND, &priv->status) <<
2146 STATUS_IN_SUSPEND |
2147 test_bit(STATUS_EXIT_PENDING, &priv->status) <<
2148 STATUS_EXIT_PENDING;
2149 goto exit;
2150 }
2151
2152 /* ...otherwise clear out all the status bits but the RF Kill and
2153 * SUSPEND bits and continue taking the NIC down. */
2154 priv->status &= test_bit(STATUS_RF_KILL_HW, &priv->status) <<
2155 STATUS_RF_KILL_HW |
2156 test_bit(STATUS_RF_KILL_SW, &priv->status) <<
2157 STATUS_RF_KILL_SW |
2158 test_bit(STATUS_GEO_CONFIGURED, &priv->status) <<
2159 STATUS_GEO_CONFIGURED |
2160 test_bit(STATUS_IN_SUSPEND, &priv->status) <<
2161 STATUS_IN_SUSPEND |
2162 test_bit(STATUS_FW_ERROR, &priv->status) <<
2163 STATUS_FW_ERROR |
2164 test_bit(STATUS_EXIT_PENDING, &priv->status) <<
2165 STATUS_EXIT_PENDING;
2166
2167 spin_lock_irqsave(&priv->lock, flags);
2168 iwl_clear_bit(priv, CSR_GP_CNTRL,
2169 CSR_GP_CNTRL_REG_FLAG_MAC_ACCESS_REQ);
2170 spin_unlock_irqrestore(&priv->lock, flags);
2171
2172 iwl_txq_ctx_stop(priv);
2173 iwl_rxq_stop(priv);
2174
2175 spin_lock_irqsave(&priv->lock, flags);
2176 if (!iwl_grab_nic_access(priv)) {
2177 iwl_write_prph(priv, APMG_CLK_DIS_REG,
2178 APMG_CLK_VAL_DMA_CLK_RQT);
2179 iwl_release_nic_access(priv);
2180 }
2181 spin_unlock_irqrestore(&priv->lock, flags);
2182
2183 udelay(5);
2184
2185 /* FIXME: apm_ops.suspend(priv) */
2186 if (exit_pending || test_bit(STATUS_IN_SUSPEND, &priv->status))
2187 priv->cfg->ops->lib->apm_ops.stop(priv);
2188 else
2189 priv->cfg->ops->lib->apm_ops.reset(priv);
2190 priv->cfg->ops->lib->free_shared_mem(priv);
2191
2192 exit:
2193 memset(&priv->card_alive, 0, sizeof(struct iwl_alive_resp));
2194
2195 if (priv->ibss_beacon)
2196 dev_kfree_skb(priv->ibss_beacon);
2197 priv->ibss_beacon = NULL;
2198
2199 /* clear out any free frames */
2200 iwl_clear_free_frames(priv);
2201 }
2202
2203 static void iwl4965_down(struct iwl_priv *priv)
2204 {
2205 mutex_lock(&priv->mutex);
2206 __iwl4965_down(priv);
2207 mutex_unlock(&priv->mutex);
2208
2209 iwl_cancel_deferred_work(priv);
2210 }
2211
2212 #define MAX_HW_RESTARTS 5
2213
2214 static int __iwl4965_up(struct iwl_priv *priv)
2215 {
2216 int i;
2217 int ret;
2218
2219 if (test_bit(STATUS_EXIT_PENDING, &priv->status)) {
2220 IWL_WARNING("Exit pending; will not bring the NIC up\n");
2221 return -EIO;
2222 }
2223
2224 if (!priv->ucode_data_backup.v_addr || !priv->ucode_data.v_addr) {
2225 IWL_ERROR("ucode not available for device bringup\n");
2226 return -EIO;
2227 }
2228
2229 /* If platform's RF_KILL switch is NOT set to KILL */
2230 if (iwl_read32(priv, CSR_GP_CNTRL) & CSR_GP_CNTRL_REG_FLAG_HW_RF_KILL_SW)
2231 clear_bit(STATUS_RF_KILL_HW, &priv->status);
2232 else
2233 set_bit(STATUS_RF_KILL_HW, &priv->status);
2234
2235 if (iwl_is_rfkill(priv)) {
2236 iwl4965_enable_interrupts(priv);
2237 IWL_WARNING("Radio disabled by %s RF Kill switch\n",
2238 test_bit(STATUS_RF_KILL_HW, &priv->status) ? "HW" : "SW");
2239 return 0;
2240 }
2241
2242 iwl_write32(priv, CSR_INT, 0xFFFFFFFF);
2243
2244 ret = priv->cfg->ops->lib->alloc_shared_mem(priv);
2245 if (ret) {
2246 IWL_ERROR("Unable to allocate shared memory\n");
2247 return ret;
2248 }
2249
2250 ret = iwl_hw_nic_init(priv);
2251 if (ret) {
2252 IWL_ERROR("Unable to init nic\n");
2253 return ret;
2254 }
2255
2256 /* make sure rfkill handshake bits are cleared */
2257 iwl_write32(priv, CSR_UCODE_DRV_GP1_CLR, CSR_UCODE_SW_BIT_RFKILL);
2258 iwl_write32(priv, CSR_UCODE_DRV_GP1_CLR,
2259 CSR_UCODE_DRV_GP1_BIT_CMD_BLOCKED);
2260
2261 /* clear (again), then enable host interrupts */
2262 iwl_write32(priv, CSR_INT, 0xFFFFFFFF);
2263 iwl4965_enable_interrupts(priv);
2264
2265 /* really make sure rfkill handshake bits are cleared */
2266 iwl_write32(priv, CSR_UCODE_DRV_GP1_CLR, CSR_UCODE_SW_BIT_RFKILL);
2267 iwl_write32(priv, CSR_UCODE_DRV_GP1_CLR, CSR_UCODE_SW_BIT_RFKILL);
2268
2269 /* Copy original ucode data image from disk into backup cache.
2270 * This will be used to initialize the on-board processor's
2271 * data SRAM for a clean start when the runtime program first loads. */
2272 memcpy(priv->ucode_data_backup.v_addr, priv->ucode_data.v_addr,
2273 priv->ucode_data.len);
2274
2275 for (i = 0; i < MAX_HW_RESTARTS; i++) {
2276
2277 iwl_clear_stations_table(priv);
2278
2279 /* load bootstrap state machine,
2280 * load bootstrap program into processor's memory,
2281 * prepare to load the "initialize" uCode */
2282 ret = priv->cfg->ops->lib->load_ucode(priv);
2283
2284 if (ret) {
2285 IWL_ERROR("Unable to set up bootstrap uCode: %d\n", ret);
2286 continue;
2287 }
2288
2289 /* Clear out the uCode error bit if it is set */
2290 clear_bit(STATUS_FW_ERROR, &priv->status);
2291
2292 /* start card; "initialize" will load runtime ucode */
2293 iwl4965_nic_start(priv);
2294
2295 IWL_DEBUG_INFO(DRV_NAME " is coming up\n");
2296
2297 return 0;
2298 }
2299
2300 set_bit(STATUS_EXIT_PENDING, &priv->status);
2301 __iwl4965_down(priv);
2302 clear_bit(STATUS_EXIT_PENDING, &priv->status);
2303
2304 /* tried to restart and config the device for as long as our
2305 * patience could withstand */
2306 IWL_ERROR("Unable to initialize device after %d attempts.\n", i);
2307 return -EIO;
2308 }
2309
2310
2311 /*****************************************************************************
2312 *
2313 * Workqueue callbacks
2314 *
2315 *****************************************************************************/
2316
2317 static void iwl_bg_init_alive_start(struct work_struct *data)
2318 {
2319 struct iwl_priv *priv =
2320 container_of(data, struct iwl_priv, init_alive_start.work);
2321
2322 if (test_bit(STATUS_EXIT_PENDING, &priv->status))
2323 return;
2324
2325 mutex_lock(&priv->mutex);
2326 priv->cfg->ops->lib->init_alive_start(priv);
2327 mutex_unlock(&priv->mutex);
2328 }
2329
2330 static void iwl_bg_alive_start(struct work_struct *data)
2331 {
2332 struct iwl_priv *priv =
2333 container_of(data, struct iwl_priv, alive_start.work);
2334
2335 if (test_bit(STATUS_EXIT_PENDING, &priv->status))
2336 return;
2337
2338 mutex_lock(&priv->mutex);
2339 iwl_alive_start(priv);
2340 mutex_unlock(&priv->mutex);
2341 }
2342
2343 static void iwl4965_bg_rf_kill(struct work_struct *work)
2344 {
2345 struct iwl_priv *priv = container_of(work, struct iwl_priv, rf_kill);
2346
2347 wake_up_interruptible(&priv->wait_command_queue);
2348
2349 if (test_bit(STATUS_EXIT_PENDING, &priv->status))
2350 return;
2351
2352 mutex_lock(&priv->mutex);
2353
2354 if (!iwl_is_rfkill(priv)) {
2355 IWL_DEBUG(IWL_DL_RF_KILL,
2356 "HW and/or SW RF Kill no longer active, restarting "
2357 "device\n");
2358 if (!test_bit(STATUS_EXIT_PENDING, &priv->status))
2359 queue_work(priv->workqueue, &priv->restart);
2360 } else {
2361 /* make sure mac80211 stop sending Tx frame */
2362 if (priv->mac80211_registered)
2363 ieee80211_stop_queues(priv->hw);
2364
2365 if (!test_bit(STATUS_RF_KILL_HW, &priv->status))
2366 IWL_DEBUG_RF_KILL("Can not turn radio back on - "
2367 "disabled by SW switch\n");
2368 else
2369 IWL_WARNING("Radio Frequency Kill Switch is On:\n"
2370 "Kill switch must be turned off for "
2371 "wireless networking to work.\n");
2372 }
2373 mutex_unlock(&priv->mutex);
2374 iwl_rfkill_set_hw_state(priv);
2375 }
2376
2377 static void iwl4965_bg_set_monitor(struct work_struct *work)
2378 {
2379 struct iwl_priv *priv = container_of(work,
2380 struct iwl_priv, set_monitor);
2381 int ret;
2382
2383 IWL_DEBUG(IWL_DL_STATE, "setting monitor mode\n");
2384
2385 mutex_lock(&priv->mutex);
2386
2387 ret = iwl4965_set_mode(priv, NL80211_IFTYPE_MONITOR);
2388
2389 if (ret) {
2390 if (ret == -EAGAIN)
2391 IWL_DEBUG(IWL_DL_STATE, "leave - not ready\n");
2392 else
2393 IWL_ERROR("iwl4965_set_mode() failed ret = %d\n", ret);
2394 }
2395
2396 mutex_unlock(&priv->mutex);
2397 }
2398
2399 static void iwl_bg_run_time_calib_work(struct work_struct *work)
2400 {
2401 struct iwl_priv *priv = container_of(work, struct iwl_priv,
2402 run_time_calib_work);
2403
2404 mutex_lock(&priv->mutex);
2405
2406 if (test_bit(STATUS_EXIT_PENDING, &priv->status) ||
2407 test_bit(STATUS_SCANNING, &priv->status)) {
2408 mutex_unlock(&priv->mutex);
2409 return;
2410 }
2411
2412 if (priv->start_calib) {
2413 iwl_chain_noise_calibration(priv, &priv->statistics);
2414
2415 iwl_sensitivity_calibration(priv, &priv->statistics);
2416 }
2417
2418 mutex_unlock(&priv->mutex);
2419 return;
2420 }
2421
2422 static void iwl4965_bg_up(struct work_struct *data)
2423 {
2424 struct iwl_priv *priv = container_of(data, struct iwl_priv, up);
2425
2426 if (test_bit(STATUS_EXIT_PENDING, &priv->status))
2427 return;
2428
2429 mutex_lock(&priv->mutex);
2430 __iwl4965_up(priv);
2431 mutex_unlock(&priv->mutex);
2432 iwl_rfkill_set_hw_state(priv);
2433 }
2434
2435 static void iwl4965_bg_restart(struct work_struct *data)
2436 {
2437 struct iwl_priv *priv = container_of(data, struct iwl_priv, restart);
2438
2439 if (test_bit(STATUS_EXIT_PENDING, &priv->status))
2440 return;
2441
2442 iwl4965_down(priv);
2443 queue_work(priv->workqueue, &priv->up);
2444 }
2445
2446 static void iwl4965_bg_rx_replenish(struct work_struct *data)
2447 {
2448 struct iwl_priv *priv =
2449 container_of(data, struct iwl_priv, rx_replenish);
2450
2451 if (test_bit(STATUS_EXIT_PENDING, &priv->status))
2452 return;
2453
2454 mutex_lock(&priv->mutex);
2455 iwl_rx_replenish(priv);
2456 mutex_unlock(&priv->mutex);
2457 }
2458
2459 #define IWL_DELAY_NEXT_SCAN (HZ*2)
2460
2461 static void iwl4965_post_associate(struct iwl_priv *priv)
2462 {
2463 struct ieee80211_conf *conf = NULL;
2464 int ret = 0;
2465 unsigned long flags;
2466
2467 if (priv->iw_mode == NL80211_IFTYPE_AP) {
2468 IWL_ERROR("%s Should not be called in AP mode\n", __func__);
2469 return;
2470 }
2471
2472 IWL_DEBUG_ASSOC("Associated as %d to: %pM\n",
2473 priv->assoc_id, priv->active_rxon.bssid_addr);
2474
2475
2476 if (test_bit(STATUS_EXIT_PENDING, &priv->status))
2477 return;
2478
2479
2480 if (!priv->vif || !priv->is_open)
2481 return;
2482
2483 iwl_power_cancel_timeout(priv);
2484 iwl_scan_cancel_timeout(priv, 200);
2485
2486 conf = ieee80211_get_hw_conf(priv->hw);
2487
2488 priv->staging_rxon.filter_flags &= ~RXON_FILTER_ASSOC_MSK;
2489 iwl4965_commit_rxon(priv);
2490
2491 memset(&priv->rxon_timing, 0, sizeof(struct iwl4965_rxon_time_cmd));
2492 iwl4965_setup_rxon_timing(priv);
2493 ret = iwl_send_cmd_pdu(priv, REPLY_RXON_TIMING,
2494 sizeof(priv->rxon_timing), &priv->rxon_timing);
2495 if (ret)
2496 IWL_WARNING("REPLY_RXON_TIMING failed - "
2497 "Attempting to continue.\n");
2498
2499 priv->staging_rxon.filter_flags |= RXON_FILTER_ASSOC_MSK;
2500
2501 iwl_set_rxon_ht(priv, &priv->current_ht_config);
2502
2503 iwl_set_rxon_chain(priv);
2504 priv->staging_rxon.assoc_id = cpu_to_le16(priv->assoc_id);
2505
2506 IWL_DEBUG_ASSOC("assoc id %d beacon interval %d\n",
2507 priv->assoc_id, priv->beacon_int);
2508
2509 if (priv->assoc_capability & WLAN_CAPABILITY_SHORT_PREAMBLE)
2510 priv->staging_rxon.flags |= RXON_FLG_SHORT_PREAMBLE_MSK;
2511 else
2512 priv->staging_rxon.flags &= ~RXON_FLG_SHORT_PREAMBLE_MSK;
2513
2514 if (priv->staging_rxon.flags & RXON_FLG_BAND_24G_MSK) {
2515 if (priv->assoc_capability & WLAN_CAPABILITY_SHORT_SLOT_TIME)
2516 priv->staging_rxon.flags |= RXON_FLG_SHORT_SLOT_MSK;
2517 else
2518 priv->staging_rxon.flags &= ~RXON_FLG_SHORT_SLOT_MSK;
2519
2520 if (priv->iw_mode == NL80211_IFTYPE_ADHOC)
2521 priv->staging_rxon.flags &= ~RXON_FLG_SHORT_SLOT_MSK;
2522
2523 }
2524
2525 iwl4965_commit_rxon(priv);
2526
2527 switch (priv->iw_mode) {
2528 case NL80211_IFTYPE_STATION:
2529 break;
2530
2531 case NL80211_IFTYPE_ADHOC:
2532
2533 /* assume default assoc id */
2534 priv->assoc_id = 1;
2535
2536 iwl_rxon_add_station(priv, priv->bssid, 0);
2537 iwl4965_send_beacon_cmd(priv);
2538
2539 break;
2540
2541 default:
2542 IWL_ERROR("%s Should not be called in %d mode\n",
2543 __func__, priv->iw_mode);
2544 break;
2545 }
2546
2547 if (priv->iw_mode == NL80211_IFTYPE_ADHOC)
2548 priv->assoc_station_added = 1;
2549
2550 spin_lock_irqsave(&priv->lock, flags);
2551 iwl_activate_qos(priv, 0);
2552 spin_unlock_irqrestore(&priv->lock, flags);
2553
2554 /* the chain noise calibration will enabled PM upon completion
2555 * If chain noise has already been run, then we need to enable
2556 * power management here */
2557 if (priv->chain_noise_data.state == IWL_CHAIN_NOISE_DONE)
2558 iwl_power_enable_management(priv);
2559
2560 /* Enable Rx differential gain and sensitivity calibrations */
2561 iwl_chain_noise_reset(priv);
2562 priv->start_calib = 1;
2563
2564 }
2565
2566 /*****************************************************************************
2567 *
2568 * mac80211 entry point functions
2569 *
2570 *****************************************************************************/
2571
2572 #define UCODE_READY_TIMEOUT (4 * HZ)
2573
2574 static int iwl4965_mac_start(struct ieee80211_hw *hw)
2575 {
2576 struct iwl_priv *priv = hw->priv;
2577 int ret;
2578 u16 pci_cmd;
2579
2580 IWL_DEBUG_MAC80211("enter\n");
2581
2582 if (pci_enable_device(priv->pci_dev)) {
2583 IWL_ERROR("Fail to pci_enable_device\n");
2584 return -ENODEV;
2585 }
2586 pci_restore_state(priv->pci_dev);
2587 pci_enable_msi(priv->pci_dev);
2588
2589 /* enable interrupts if needed: hw bug w/a */
2590 pci_read_config_word(priv->pci_dev, PCI_COMMAND, &pci_cmd);
2591 if (pci_cmd & PCI_COMMAND_INTX_DISABLE) {
2592 pci_cmd &= ~PCI_COMMAND_INTX_DISABLE;
2593 pci_write_config_word(priv->pci_dev, PCI_COMMAND, pci_cmd);
2594 }
2595
2596 ret = request_irq(priv->pci_dev->irq, iwl4965_isr, IRQF_SHARED,
2597 DRV_NAME, priv);
2598 if (ret) {
2599 IWL_ERROR("Error allocating IRQ %d\n", priv->pci_dev->irq);
2600 goto out_disable_msi;
2601 }
2602
2603 /* we should be verifying the device is ready to be opened */
2604 mutex_lock(&priv->mutex);
2605
2606 memset(&priv->staging_rxon, 0, sizeof(struct iwl_rxon_cmd));
2607 /* fetch ucode file from disk, alloc and copy to bus-master buffers ...
2608 * ucode filename and max sizes are card-specific. */
2609
2610 if (!priv->ucode_code.len) {
2611 ret = iwl4965_read_ucode(priv);
2612 if (ret) {
2613 IWL_ERROR("Could not read microcode: %d\n", ret);
2614 mutex_unlock(&priv->mutex);
2615 goto out_release_irq;
2616 }
2617 }
2618
2619 ret = __iwl4965_up(priv);
2620
2621 mutex_unlock(&priv->mutex);
2622
2623 iwl_rfkill_set_hw_state(priv);
2624
2625 if (ret)
2626 goto out_release_irq;
2627
2628 if (iwl_is_rfkill(priv))
2629 goto out;
2630
2631 IWL_DEBUG_INFO("Start UP work done.\n");
2632
2633 if (test_bit(STATUS_IN_SUSPEND, &priv->status))
2634 return 0;
2635
2636 /* Wait for START_ALIVE from Run Time ucode. Otherwise callbacks from
2637 * mac80211 will not be run successfully. */
2638 ret = wait_event_interruptible_timeout(priv->wait_command_queue,
2639 test_bit(STATUS_READY, &priv->status),
2640 UCODE_READY_TIMEOUT);
2641 if (!ret) {
2642 if (!test_bit(STATUS_READY, &priv->status)) {
2643 IWL_ERROR("START_ALIVE timeout after %dms.\n",
2644 jiffies_to_msecs(UCODE_READY_TIMEOUT));
2645 ret = -ETIMEDOUT;
2646 goto out_release_irq;
2647 }
2648 }
2649
2650 out:
2651 priv->is_open = 1;
2652 IWL_DEBUG_MAC80211("leave\n");
2653 return 0;
2654
2655 out_release_irq:
2656 free_irq(priv->pci_dev->irq, priv);
2657 out_disable_msi:
2658 pci_disable_msi(priv->pci_dev);
2659 pci_disable_device(priv->pci_dev);
2660 priv->is_open = 0;
2661 IWL_DEBUG_MAC80211("leave - failed\n");
2662 return ret;
2663 }
2664
2665 static void iwl4965_mac_stop(struct ieee80211_hw *hw)
2666 {
2667 struct iwl_priv *priv = hw->priv;
2668
2669 IWL_DEBUG_MAC80211("enter\n");
2670
2671 if (!priv->is_open) {
2672 IWL_DEBUG_MAC80211("leave - skip\n");
2673 return;
2674 }
2675
2676 priv->is_open = 0;
2677
2678 if (iwl_is_ready_rf(priv)) {
2679 /* stop mac, cancel any scan request and clear
2680 * RXON_FILTER_ASSOC_MSK BIT
2681 */
2682 mutex_lock(&priv->mutex);
2683 iwl_scan_cancel_timeout(priv, 100);
2684 mutex_unlock(&priv->mutex);
2685 }
2686
2687 iwl4965_down(priv);
2688
2689 flush_workqueue(priv->workqueue);
2690 free_irq(priv->pci_dev->irq, priv);
2691 pci_disable_msi(priv->pci_dev);
2692 pci_save_state(priv->pci_dev);
2693 pci_disable_device(priv->pci_dev);
2694
2695 IWL_DEBUG_MAC80211("leave\n");
2696 }
2697
2698 static int iwl4965_mac_tx(struct ieee80211_hw *hw, struct sk_buff *skb)
2699 {
2700 struct iwl_priv *priv = hw->priv;
2701
2702 IWL_DEBUG_MACDUMP("enter\n");
2703
2704 IWL_DEBUG_TX("dev->xmit(%d bytes) at rate 0x%02x\n", skb->len,
2705 ieee80211_get_tx_rate(hw, IEEE80211_SKB_CB(skb))->bitrate);
2706
2707 if (iwl_tx_skb(priv, skb))
2708 dev_kfree_skb_any(skb);
2709
2710 IWL_DEBUG_MACDUMP("leave\n");
2711 return 0;
2712 }
2713
2714 static int iwl4965_mac_add_interface(struct ieee80211_hw *hw,
2715 struct ieee80211_if_init_conf *conf)
2716 {
2717 struct iwl_priv *priv = hw->priv;
2718 unsigned long flags;
2719
2720 IWL_DEBUG_MAC80211("enter: type %d\n", conf->type);
2721
2722 if (priv->vif) {
2723 IWL_DEBUG_MAC80211("leave - vif != NULL\n");
2724 return -EOPNOTSUPP;
2725 }
2726
2727 spin_lock_irqsave(&priv->lock, flags);
2728 priv->vif = conf->vif;
2729
2730 spin_unlock_irqrestore(&priv->lock, flags);
2731
2732 mutex_lock(&priv->mutex);
2733
2734 if (conf->mac_addr) {
2735 IWL_DEBUG_MAC80211("Set %pM\n", conf->mac_addr);
2736 memcpy(priv->mac_addr, conf->mac_addr, ETH_ALEN);
2737 }
2738
2739 if (iwl4965_set_mode(priv, conf->type) == -EAGAIN)
2740 /* we are not ready, will run again when ready */
2741 set_bit(STATUS_MODE_PENDING, &priv->status);
2742
2743 mutex_unlock(&priv->mutex);
2744
2745 IWL_DEBUG_MAC80211("leave\n");
2746 return 0;
2747 }
2748
2749 /**
2750 * iwl4965_mac_config - mac80211 config callback
2751 *
2752 * We ignore conf->flags & IEEE80211_CONF_SHORT_SLOT_TIME since it seems to
2753 * be set inappropriately and the driver currently sets the hardware up to
2754 * use it whenever needed.
2755 */
2756 static int iwl4965_mac_config(struct ieee80211_hw *hw, struct ieee80211_conf *conf)
2757 {
2758 struct iwl_priv *priv = hw->priv;
2759 const struct iwl_channel_info *ch_info;
2760 unsigned long flags;
2761 int ret = 0;
2762 u16 channel;
2763
2764 mutex_lock(&priv->mutex);
2765 IWL_DEBUG_MAC80211("enter to channel %d\n", conf->channel->hw_value);
2766
2767 if (conf->radio_enabled && iwl_radio_kill_sw_enable_radio(priv)) {
2768 IWL_DEBUG_MAC80211("leave - RF-KILL - waiting for uCode\n");
2769 goto out;
2770 }
2771
2772 if (!conf->radio_enabled)
2773 iwl_radio_kill_sw_disable_radio(priv);
2774
2775 if (!iwl_is_ready(priv)) {
2776 IWL_DEBUG_MAC80211("leave - not ready\n");
2777 ret = -EIO;
2778 goto out;
2779 }
2780
2781 if (unlikely(!priv->cfg->mod_params->disable_hw_scan &&
2782 test_bit(STATUS_SCANNING, &priv->status))) {
2783 IWL_DEBUG_MAC80211("leave - scanning\n");
2784 mutex_unlock(&priv->mutex);
2785 return 0;
2786 }
2787
2788 channel = ieee80211_frequency_to_channel(conf->channel->center_freq);
2789 ch_info = iwl_get_channel_info(priv, conf->channel->band, channel);
2790 if (!is_channel_valid(ch_info)) {
2791 IWL_DEBUG_MAC80211("leave - invalid channel\n");
2792 ret = -EINVAL;
2793 goto out;
2794 }
2795
2796 if (priv->iw_mode == NL80211_IFTYPE_ADHOC &&
2797 !is_channel_ibss(ch_info)) {
2798 IWL_ERROR("channel %d in band %d not IBSS channel\n",
2799 conf->channel->hw_value, conf->channel->band);
2800 ret = -EINVAL;
2801 goto out;
2802 }
2803
2804 spin_lock_irqsave(&priv->lock, flags);
2805
2806
2807 /* if we are switching from ht to 2.4 clear flags
2808 * from any ht related info since 2.4 does not
2809 * support ht */
2810 if ((le16_to_cpu(priv->staging_rxon.channel) != channel)
2811 #ifdef IEEE80211_CONF_CHANNEL_SWITCH
2812 && !(conf->flags & IEEE80211_CONF_CHANNEL_SWITCH)
2813 #endif
2814 )
2815 priv->staging_rxon.flags = 0;
2816
2817 iwl_set_rxon_channel(priv, conf->channel);
2818
2819 iwl_set_flags_for_band(priv, conf->channel->band);
2820
2821 /* The list of supported rates and rate mask can be different
2822 * for each band; since the band may have changed, reset
2823 * the rate mask to what mac80211 lists */
2824 iwl4965_set_rate(priv);
2825
2826 spin_unlock_irqrestore(&priv->lock, flags);
2827
2828 #ifdef IEEE80211_CONF_CHANNEL_SWITCH
2829 if (conf->flags & IEEE80211_CONF_CHANNEL_SWITCH) {
2830 iwl4965_hw_channel_switch(priv, conf->channel);
2831 goto out;
2832 }
2833 #endif
2834
2835 if (!conf->radio_enabled) {
2836 IWL_DEBUG_MAC80211("leave - radio disabled\n");
2837 goto out;
2838 }
2839
2840 if (iwl_is_rfkill(priv)) {
2841 IWL_DEBUG_MAC80211("leave - RF kill\n");
2842 ret = -EIO;
2843 goto out;
2844 }
2845
2846 if (conf->flags & IEEE80211_CONF_PS)
2847 ret = iwl_power_set_user_mode(priv, IWL_POWER_INDEX_3);
2848 else
2849 ret = iwl_power_set_user_mode(priv, IWL_POWER_MODE_CAM);
2850 if (ret)
2851 IWL_DEBUG_MAC80211("Error setting power level\n");
2852
2853 IWL_DEBUG_MAC80211("TX Power old=%d new=%d\n",
2854 priv->tx_power_user_lmt, conf->power_level);
2855
2856 iwl_set_tx_power(priv, conf->power_level, false);
2857
2858 iwl4965_set_rate(priv);
2859
2860 if (memcmp(&priv->active_rxon,
2861 &priv->staging_rxon, sizeof(priv->staging_rxon)))
2862 iwl4965_commit_rxon(priv);
2863 else
2864 IWL_DEBUG_INFO("No re-sending same RXON configuration.\n");
2865
2866 IWL_DEBUG_MAC80211("leave\n");
2867
2868 out:
2869 mutex_unlock(&priv->mutex);
2870 return ret;
2871 }
2872
2873 static void iwl4965_config_ap(struct iwl_priv *priv)
2874 {
2875 int ret = 0;
2876 unsigned long flags;
2877
2878 if (test_bit(STATUS_EXIT_PENDING, &priv->status))
2879 return;
2880
2881 /* The following should be done only at AP bring up */
2882 if (!(iwl_is_associated(priv))) {
2883
2884 /* RXON - unassoc (to set timing command) */
2885 priv->staging_rxon.filter_flags &= ~RXON_FILTER_ASSOC_MSK;
2886 iwl4965_commit_rxon(priv);
2887
2888 /* RXON Timing */
2889 memset(&priv->rxon_timing, 0, sizeof(struct iwl4965_rxon_time_cmd));
2890 iwl4965_setup_rxon_timing(priv);
2891 ret = iwl_send_cmd_pdu(priv, REPLY_RXON_TIMING,
2892 sizeof(priv->rxon_timing), &priv->rxon_timing);
2893 if (ret)
2894 IWL_WARNING("REPLY_RXON_TIMING failed - "
2895 "Attempting to continue.\n");
2896
2897 iwl_set_rxon_chain(priv);
2898
2899 /* FIXME: what should be the assoc_id for AP? */
2900 priv->staging_rxon.assoc_id = cpu_to_le16(priv->assoc_id);
2901 if (priv->assoc_capability & WLAN_CAPABILITY_SHORT_PREAMBLE)
2902 priv->staging_rxon.flags |=
2903 RXON_FLG_SHORT_PREAMBLE_MSK;
2904 else
2905 priv->staging_rxon.flags &=
2906 ~RXON_FLG_SHORT_PREAMBLE_MSK;
2907
2908 if (priv->staging_rxon.flags & RXON_FLG_BAND_24G_MSK) {
2909 if (priv->assoc_capability &
2910 WLAN_CAPABILITY_SHORT_SLOT_TIME)
2911 priv->staging_rxon.flags |=
2912 RXON_FLG_SHORT_SLOT_MSK;
2913 else
2914 priv->staging_rxon.flags &=
2915 ~RXON_FLG_SHORT_SLOT_MSK;
2916
2917 if (priv->iw_mode == NL80211_IFTYPE_ADHOC)
2918 priv->staging_rxon.flags &=
2919 ~RXON_FLG_SHORT_SLOT_MSK;
2920 }
2921 /* restore RXON assoc */
2922 priv->staging_rxon.filter_flags |= RXON_FILTER_ASSOC_MSK;
2923 iwl4965_commit_rxon(priv);
2924 spin_lock_irqsave(&priv->lock, flags);
2925 iwl_activate_qos(priv, 1);
2926 spin_unlock_irqrestore(&priv->lock, flags);
2927 iwl_rxon_add_station(priv, iwl_bcast_addr, 0);
2928 }
2929 iwl4965_send_beacon_cmd(priv);
2930
2931 /* FIXME - we need to add code here to detect a totally new
2932 * configuration, reset the AP, unassoc, rxon timing, assoc,
2933 * clear sta table, add BCAST sta... */
2934 }
2935
2936 /* temporary */
2937 static int iwl4965_mac_beacon_update(struct ieee80211_hw *hw, struct sk_buff *skb);
2938
2939 static int iwl4965_mac_config_interface(struct ieee80211_hw *hw,
2940 struct ieee80211_vif *vif,
2941 struct ieee80211_if_conf *conf)
2942 {
2943 struct iwl_priv *priv = hw->priv;
2944 unsigned long flags;
2945 int rc;
2946
2947 if (conf == NULL)
2948 return -EIO;
2949
2950 if (priv->vif != vif) {
2951 IWL_DEBUG_MAC80211("leave - priv->vif != vif\n");
2952 return 0;
2953 }
2954
2955 if (priv->iw_mode == NL80211_IFTYPE_ADHOC &&
2956 conf->changed & IEEE80211_IFCC_BEACON) {
2957 struct sk_buff *beacon = ieee80211_beacon_get(hw, vif);
2958 if (!beacon)
2959 return -ENOMEM;
2960 rc = iwl4965_mac_beacon_update(hw, beacon);
2961 if (rc)
2962 return rc;
2963 }
2964
2965 if ((priv->iw_mode == NL80211_IFTYPE_AP) &&
2966 (!conf->ssid_len)) {
2967 IWL_DEBUG_MAC80211
2968 ("Leaving in AP mode because HostAPD is not ready.\n");
2969 return 0;
2970 }
2971
2972 if (!iwl_is_alive(priv))
2973 return -EAGAIN;
2974
2975 mutex_lock(&priv->mutex);
2976
2977 if (conf->bssid)
2978 IWL_DEBUG_MAC80211("bssid: %pM\n", conf->bssid);
2979
2980 /*
2981 * very dubious code was here; the probe filtering flag is never set:
2982 *
2983 if (unlikely(test_bit(STATUS_SCANNING, &priv->status)) &&
2984 !(priv->hw->flags & IEEE80211_HW_NO_PROBE_FILTERING)) {
2985 */
2986
2987 if (priv->iw_mode == NL80211_IFTYPE_AP) {
2988 if (!conf->bssid) {
2989 conf->bssid = priv->mac_addr;
2990 memcpy(priv->bssid, priv->mac_addr, ETH_ALEN);
2991 IWL_DEBUG_MAC80211("bssid was set to: %pM\n",
2992 conf->bssid);
2993 }
2994 if (priv->ibss_beacon)
2995 dev_kfree_skb(priv->ibss_beacon);
2996
2997 priv->ibss_beacon = ieee80211_beacon_get(hw, vif);
2998 }
2999
3000 if (iwl_is_rfkill(priv))
3001 goto done;
3002
3003 if (conf->bssid && !is_zero_ether_addr(conf->bssid) &&
3004 !is_multicast_ether_addr(conf->bssid)) {
3005 /* If there is currently a HW scan going on in the background
3006 * then we need to cancel it else the RXON below will fail. */
3007 if (iwl_scan_cancel_timeout(priv, 100)) {
3008 IWL_WARNING("Aborted scan still in progress "
3009 "after 100ms\n");
3010 IWL_DEBUG_MAC80211("leaving - scan abort failed.\n");
3011 mutex_unlock(&priv->mutex);
3012 return -EAGAIN;
3013 }
3014 memcpy(priv->staging_rxon.bssid_addr, conf->bssid, ETH_ALEN);
3015
3016 /* TODO: Audit driver for usage of these members and see
3017 * if mac80211 deprecates them (priv->bssid looks like it
3018 * shouldn't be there, but I haven't scanned the IBSS code
3019 * to verify) - jpk */
3020 memcpy(priv->bssid, conf->bssid, ETH_ALEN);
3021
3022 if (priv->iw_mode == NL80211_IFTYPE_AP)
3023 iwl4965_config_ap(priv);
3024 else {
3025 rc = iwl4965_commit_rxon(priv);
3026 if ((priv->iw_mode == NL80211_IFTYPE_STATION) && rc)
3027 iwl_rxon_add_station(
3028 priv, priv->active_rxon.bssid_addr, 1);
3029 }
3030
3031 } else {
3032 iwl_scan_cancel_timeout(priv, 100);
3033 priv->staging_rxon.filter_flags &= ~RXON_FILTER_ASSOC_MSK;
3034 iwl4965_commit_rxon(priv);
3035 }
3036
3037 done:
3038 spin_lock_irqsave(&priv->lock, flags);
3039 if (!conf->ssid_len)
3040 memset(priv->essid, 0, IW_ESSID_MAX_SIZE);
3041 else
3042 memcpy(priv->essid, conf->ssid, conf->ssid_len);
3043
3044 priv->essid_len = conf->ssid_len;
3045 spin_unlock_irqrestore(&priv->lock, flags);
3046
3047 IWL_DEBUG_MAC80211("leave\n");
3048 mutex_unlock(&priv->mutex);
3049
3050 return 0;
3051 }
3052
3053 static void iwl4965_configure_filter(struct ieee80211_hw *hw,
3054 unsigned int changed_flags,
3055 unsigned int *total_flags,
3056 int mc_count, struct dev_addr_list *mc_list)
3057 {
3058 struct iwl_priv *priv = hw->priv;
3059
3060 if (changed_flags & (*total_flags) & FIF_OTHER_BSS) {
3061 IWL_DEBUG_MAC80211("Enter: type %d (0x%x, 0x%x)\n",
3062 NL80211_IFTYPE_MONITOR,
3063 changed_flags, *total_flags);
3064 /* queue work 'cuz mac80211 is holding a lock which
3065 * prevents us from issuing (synchronous) f/w cmds */
3066 queue_work(priv->workqueue, &priv->set_monitor);
3067 }
3068 *total_flags &= FIF_OTHER_BSS | FIF_ALLMULTI |
3069 FIF_BCN_PRBRESP_PROMISC | FIF_CONTROL;
3070 }
3071
3072 static void iwl4965_mac_remove_interface(struct ieee80211_hw *hw,
3073 struct ieee80211_if_init_conf *conf)
3074 {
3075 struct iwl_priv *priv = hw->priv;
3076
3077 IWL_DEBUG_MAC80211("enter\n");
3078
3079 mutex_lock(&priv->mutex);
3080
3081 if (iwl_is_ready_rf(priv)) {
3082 iwl_scan_cancel_timeout(priv, 100);
3083 priv->staging_rxon.filter_flags &= ~RXON_FILTER_ASSOC_MSK;
3084 iwl4965_commit_rxon(priv);
3085 }
3086 if (priv->vif == conf->vif) {
3087 priv->vif = NULL;
3088 memset(priv->bssid, 0, ETH_ALEN);
3089 memset(priv->essid, 0, IW_ESSID_MAX_SIZE);
3090 priv->essid_len = 0;
3091 }
3092 mutex_unlock(&priv->mutex);
3093
3094 IWL_DEBUG_MAC80211("leave\n");
3095
3096 }
3097
3098 #define IWL_DELAY_NEXT_SCAN_AFTER_ASSOC (HZ*6)
3099 static void iwl4965_bss_info_changed(struct ieee80211_hw *hw,
3100 struct ieee80211_vif *vif,
3101 struct ieee80211_bss_conf *bss_conf,
3102 u32 changes)
3103 {
3104 struct iwl_priv *priv = hw->priv;
3105
3106 IWL_DEBUG_MAC80211("changes = 0x%X\n", changes);
3107
3108 if (changes & BSS_CHANGED_ERP_PREAMBLE) {
3109 IWL_DEBUG_MAC80211("ERP_PREAMBLE %d\n",
3110 bss_conf->use_short_preamble);
3111 if (bss_conf->use_short_preamble)
3112 priv->staging_rxon.flags |= RXON_FLG_SHORT_PREAMBLE_MSK;
3113 else
3114 priv->staging_rxon.flags &= ~RXON_FLG_SHORT_PREAMBLE_MSK;
3115 }
3116
3117 if (changes & BSS_CHANGED_ERP_CTS_PROT) {
3118 IWL_DEBUG_MAC80211("ERP_CTS %d\n", bss_conf->use_cts_prot);
3119 if (bss_conf->use_cts_prot && (priv->band != IEEE80211_BAND_5GHZ))
3120 priv->staging_rxon.flags |= RXON_FLG_TGG_PROTECT_MSK;
3121 else
3122 priv->staging_rxon.flags &= ~RXON_FLG_TGG_PROTECT_MSK;
3123 }
3124
3125 if (changes & BSS_CHANGED_HT) {
3126 IWL_DEBUG_MAC80211("HT %d\n", bss_conf->assoc_ht);
3127 iwl4965_ht_conf(priv, bss_conf);
3128 iwl_set_rxon_chain(priv);
3129 }
3130
3131 if (changes & BSS_CHANGED_ASSOC) {
3132 IWL_DEBUG_MAC80211("ASSOC %d\n", bss_conf->assoc);
3133 /* This should never happen as this function should
3134 * never be called from interrupt context. */
3135 if (WARN_ON_ONCE(in_interrupt()))
3136 return;
3137 if (bss_conf->assoc) {
3138 priv->assoc_id = bss_conf->aid;
3139 priv->beacon_int = bss_conf->beacon_int;
3140 priv->power_data.dtim_period = bss_conf->dtim_period;
3141 priv->timestamp = bss_conf->timestamp;
3142 priv->assoc_capability = bss_conf->assoc_capability;
3143
3144 /* we have just associated, don't start scan too early
3145 * leave time for EAPOL exchange to complete
3146 */
3147 priv->next_scan_jiffies = jiffies +
3148 IWL_DELAY_NEXT_SCAN_AFTER_ASSOC;
3149 mutex_lock(&priv->mutex);
3150 iwl4965_post_associate(priv);
3151 mutex_unlock(&priv->mutex);
3152 } else {
3153 priv->assoc_id = 0;
3154 IWL_DEBUG_MAC80211("DISASSOC %d\n", bss_conf->assoc);
3155 }
3156 } else if (changes && iwl_is_associated(priv) && priv->assoc_id) {
3157 IWL_DEBUG_MAC80211("Associated Changes %d\n", changes);
3158 iwl_send_rxon_assoc(priv);
3159 }
3160
3161 }
3162
3163 static int iwl_mac_hw_scan(struct ieee80211_hw *hw, u8 *ssid, size_t ssid_len)
3164 {
3165 unsigned long flags;
3166 struct iwl_priv *priv = hw->priv;
3167 int ret;
3168
3169 IWL_DEBUG_MAC80211("enter\n");
3170
3171 mutex_lock(&priv->mutex);
3172 spin_lock_irqsave(&priv->lock, flags);
3173
3174 if (!iwl_is_ready_rf(priv)) {
3175 ret = -EIO;
3176 IWL_DEBUG_MAC80211("leave - not ready or exit pending\n");
3177 goto out_unlock;
3178 }
3179
3180 if (priv->iw_mode == NL80211_IFTYPE_AP) { /* APs don't scan */
3181 ret = -EIO;
3182 IWL_ERROR("ERROR: APs don't scan\n");
3183 goto out_unlock;
3184 }
3185
3186 /* We don't schedule scan within next_scan_jiffies period.
3187 * Avoid scanning during possible EAPOL exchange, return
3188 * success immediately.
3189 */
3190 if (priv->next_scan_jiffies &&
3191 time_after(priv->next_scan_jiffies, jiffies)) {
3192 IWL_DEBUG_SCAN("scan rejected: within next scan period\n");
3193 queue_work(priv->workqueue, &priv->scan_completed);
3194 ret = 0;
3195 goto out_unlock;
3196 }
3197
3198 /* if we just finished scan ask for delay */
3199 if (iwl_is_associated(priv) && priv->last_scan_jiffies &&
3200 time_after(priv->last_scan_jiffies + IWL_DELAY_NEXT_SCAN, jiffies)) {
3201 IWL_DEBUG_SCAN("scan rejected: within previous scan period\n");
3202 queue_work(priv->workqueue, &priv->scan_completed);
3203 ret = 0;
3204 goto out_unlock;
3205 }
3206
3207 if (ssid_len) {
3208 priv->one_direct_scan = 1;
3209 priv->direct_ssid_len = min_t(u8, ssid_len, IW_ESSID_MAX_SIZE);
3210 memcpy(priv->direct_ssid, ssid, priv->direct_ssid_len);
3211 } else {
3212 priv->one_direct_scan = 0;
3213 }
3214
3215 ret = iwl_scan_initiate(priv);
3216
3217 IWL_DEBUG_MAC80211("leave\n");
3218
3219 out_unlock:
3220 spin_unlock_irqrestore(&priv->lock, flags);
3221 mutex_unlock(&priv->mutex);
3222
3223 return ret;
3224 }
3225
3226 static void iwl4965_mac_update_tkip_key(struct ieee80211_hw *hw,
3227 struct ieee80211_key_conf *keyconf, const u8 *addr,
3228 u32 iv32, u16 *phase1key)
3229 {
3230 struct iwl_priv *priv = hw->priv;
3231 u8 sta_id = IWL_INVALID_STATION;
3232 unsigned long flags;
3233 __le16 key_flags = 0;
3234 int i;
3235
3236 IWL_DEBUG_MAC80211("enter\n");
3237
3238 sta_id = iwl_find_station(priv, addr);
3239 if (sta_id == IWL_INVALID_STATION) {
3240 IWL_DEBUG_MAC80211("leave - %pM not in station map.\n",
3241 addr);
3242 return;
3243 }
3244
3245 iwl_scan_cancel_timeout(priv, 100);
3246
3247 key_flags |= (STA_KEY_FLG_TKIP | STA_KEY_FLG_MAP_KEY_MSK);
3248 key_flags |= cpu_to_le16(keyconf->keyidx << STA_KEY_FLG_KEYID_POS);
3249 key_flags &= ~STA_KEY_FLG_INVALID;
3250
3251 if (sta_id == priv->hw_params.bcast_sta_id)
3252 key_flags |= STA_KEY_MULTICAST_MSK;
3253
3254 spin_lock_irqsave(&priv->sta_lock, flags);
3255
3256 priv->stations[sta_id].sta.key.key_flags = key_flags;
3257 priv->stations[sta_id].sta.key.tkip_rx_tsc_byte2 = (u8) iv32;
3258
3259 for (i = 0; i < 5; i++)
3260 priv->stations[sta_id].sta.key.tkip_rx_ttak[i] =
3261 cpu_to_le16(phase1key[i]);
3262
3263 priv->stations[sta_id].sta.sta.modify_mask = STA_MODIFY_KEY_MASK;
3264 priv->stations[sta_id].sta.mode = STA_CONTROL_MODIFY_MSK;
3265
3266 iwl_send_add_sta(priv, &priv->stations[sta_id].sta, CMD_ASYNC);
3267
3268 spin_unlock_irqrestore(&priv->sta_lock, flags);
3269
3270 IWL_DEBUG_MAC80211("leave\n");
3271 }
3272
3273 static int iwl4965_mac_set_key(struct ieee80211_hw *hw, enum set_key_cmd cmd,
3274 const u8 *local_addr, const u8 *addr,
3275 struct ieee80211_key_conf *key)
3276 {
3277 struct iwl_priv *priv = hw->priv;
3278 int ret = 0;
3279 u8 sta_id = IWL_INVALID_STATION;
3280 u8 is_default_wep_key = 0;
3281
3282 IWL_DEBUG_MAC80211("enter\n");
3283
3284 if (priv->hw_params.sw_crypto) {
3285 IWL_DEBUG_MAC80211("leave - hwcrypto disabled\n");
3286 return -EOPNOTSUPP;
3287 }
3288
3289 if (is_zero_ether_addr(addr))
3290 /* only support pairwise keys */
3291 return -EOPNOTSUPP;
3292
3293 sta_id = iwl_find_station(priv, addr);
3294 if (sta_id == IWL_INVALID_STATION) {
3295 IWL_DEBUG_MAC80211("leave - %pM not in station map.\n",
3296 addr);
3297 return -EINVAL;
3298
3299 }
3300
3301 mutex_lock(&priv->mutex);
3302 iwl_scan_cancel_timeout(priv, 100);
3303 mutex_unlock(&priv->mutex);
3304
3305 /* If we are getting WEP group key and we didn't receive any key mapping
3306 * so far, we are in legacy wep mode (group key only), otherwise we are
3307 * in 1X mode.
3308 * In legacy wep mode, we use another host command to the uCode */
3309 if (key->alg == ALG_WEP && sta_id == priv->hw_params.bcast_sta_id &&
3310 priv->iw_mode != NL80211_IFTYPE_AP) {
3311 if (cmd == SET_KEY)
3312 is_default_wep_key = !priv->key_mapping_key;
3313 else
3314 is_default_wep_key =
3315 (key->hw_key_idx == HW_KEY_DEFAULT);
3316 }
3317
3318 switch (cmd) {
3319 case SET_KEY:
3320 if (is_default_wep_key)
3321 ret = iwl_set_default_wep_key(priv, key);
3322 else
3323 ret = iwl_set_dynamic_key(priv, key, sta_id);
3324
3325 IWL_DEBUG_MAC80211("enable hwcrypto key\n");
3326 break;
3327 case DISABLE_KEY:
3328 if (is_default_wep_key)
3329 ret = iwl_remove_default_wep_key(priv, key);
3330 else
3331 ret = iwl_remove_dynamic_key(priv, key, sta_id);
3332
3333 IWL_DEBUG_MAC80211("disable hwcrypto key\n");
3334 break;
3335 default:
3336 ret = -EINVAL;
3337 }
3338
3339 IWL_DEBUG_MAC80211("leave\n");
3340
3341 return ret;
3342 }
3343
3344 static int iwl4965_mac_conf_tx(struct ieee80211_hw *hw, u16 queue,
3345 const struct ieee80211_tx_queue_params *params)
3346 {
3347 struct iwl_priv *priv = hw->priv;
3348 unsigned long flags;
3349 int q;
3350
3351 IWL_DEBUG_MAC80211("enter\n");
3352
3353 if (!iwl_is_ready_rf(priv)) {
3354 IWL_DEBUG_MAC80211("leave - RF not ready\n");
3355 return -EIO;
3356 }
3357
3358 if (queue >= AC_NUM) {
3359 IWL_DEBUG_MAC80211("leave - queue >= AC_NUM %d\n", queue);
3360 return 0;
3361 }
3362
3363 if (!priv->qos_data.qos_enable) {
3364 priv->qos_data.qos_active = 0;
3365 IWL_DEBUG_MAC80211("leave - qos not enabled\n");
3366 return 0;
3367 }
3368 q = AC_NUM - 1 - queue;
3369
3370 spin_lock_irqsave(&priv->lock, flags);
3371
3372 priv->qos_data.def_qos_parm.ac[q].cw_min = cpu_to_le16(params->cw_min);
3373 priv->qos_data.def_qos_parm.ac[q].cw_max = cpu_to_le16(params->cw_max);
3374 priv->qos_data.def_qos_parm.ac[q].aifsn = params->aifs;
3375 priv->qos_data.def_qos_parm.ac[q].edca_txop =
3376 cpu_to_le16((params->txop * 32));
3377
3378 priv->qos_data.def_qos_parm.ac[q].reserved1 = 0;
3379 priv->qos_data.qos_active = 1;
3380
3381 if (priv->iw_mode == NL80211_IFTYPE_AP)
3382 iwl_activate_qos(priv, 1);
3383 else if (priv->assoc_id && iwl_is_associated(priv))
3384 iwl_activate_qos(priv, 0);
3385
3386 spin_unlock_irqrestore(&priv->lock, flags);
3387
3388 IWL_DEBUG_MAC80211("leave\n");
3389 return 0;
3390 }
3391
3392 static int iwl4965_mac_ampdu_action(struct ieee80211_hw *hw,
3393 enum ieee80211_ampdu_mlme_action action,
3394 struct ieee80211_sta *sta, u16 tid, u16 *ssn)
3395 {
3396 struct iwl_priv *priv = hw->priv;
3397
3398 IWL_DEBUG_HT("A-MPDU action on addr %pM tid %d\n",
3399 sta->addr, tid);
3400
3401 if (!(priv->cfg->sku & IWL_SKU_N))
3402 return -EACCES;
3403
3404 switch (action) {
3405 case IEEE80211_AMPDU_RX_START:
3406 IWL_DEBUG_HT("start Rx\n");
3407 return iwl_rx_agg_start(priv, sta->addr, tid, *ssn);
3408 case IEEE80211_AMPDU_RX_STOP:
3409 IWL_DEBUG_HT("stop Rx\n");
3410 return iwl_rx_agg_stop(priv, sta->addr, tid);
3411 case IEEE80211_AMPDU_TX_START:
3412 IWL_DEBUG_HT("start Tx\n");
3413 return iwl_tx_agg_start(priv, sta->addr, tid, ssn);
3414 case IEEE80211_AMPDU_TX_STOP:
3415 IWL_DEBUG_HT("stop Tx\n");
3416 return iwl_tx_agg_stop(priv, sta->addr, tid);
3417 default:
3418 IWL_DEBUG_HT("unknown\n");
3419 return -EINVAL;
3420 break;
3421 }
3422 return 0;
3423 }
3424 static int iwl4965_mac_get_tx_stats(struct ieee80211_hw *hw,
3425 struct ieee80211_tx_queue_stats *stats)
3426 {
3427 struct iwl_priv *priv = hw->priv;
3428 int i, avail;
3429 struct iwl_tx_queue *txq;
3430 struct iwl_queue *q;
3431 unsigned long flags;
3432
3433 IWL_DEBUG_MAC80211("enter\n");
3434
3435 if (!iwl_is_ready_rf(priv)) {
3436 IWL_DEBUG_MAC80211("leave - RF not ready\n");
3437 return -EIO;
3438 }
3439
3440 spin_lock_irqsave(&priv->lock, flags);
3441
3442 for (i = 0; i < AC_NUM; i++) {
3443 txq = &priv->txq[i];
3444 q = &txq->q;
3445 avail = iwl_queue_space(q);
3446
3447 stats[i].len = q->n_window - avail;
3448 stats[i].limit = q->n_window - q->high_mark;
3449 stats[i].count = q->n_window;
3450
3451 }
3452 spin_unlock_irqrestore(&priv->lock, flags);
3453
3454 IWL_DEBUG_MAC80211("leave\n");
3455
3456 return 0;
3457 }
3458
3459 static int iwl4965_mac_get_stats(struct ieee80211_hw *hw,
3460 struct ieee80211_low_level_stats *stats)
3461 {
3462 struct iwl_priv *priv = hw->priv;
3463
3464 priv = hw->priv;
3465 IWL_DEBUG_MAC80211("enter\n");
3466 IWL_DEBUG_MAC80211("leave\n");
3467
3468 return 0;
3469 }
3470
3471 static void iwl4965_mac_reset_tsf(struct ieee80211_hw *hw)
3472 {
3473 struct iwl_priv *priv = hw->priv;
3474 unsigned long flags;
3475
3476 mutex_lock(&priv->mutex);
3477 IWL_DEBUG_MAC80211("enter\n");
3478
3479 spin_lock_irqsave(&priv->lock, flags);
3480 memset(&priv->current_ht_config, 0, sizeof(struct iwl_ht_info));
3481 spin_unlock_irqrestore(&priv->lock, flags);
3482
3483 iwl_reset_qos(priv);
3484
3485 spin_lock_irqsave(&priv->lock, flags);
3486 priv->assoc_id = 0;
3487 priv->assoc_capability = 0;
3488 priv->assoc_station_added = 0;
3489
3490 /* new association get rid of ibss beacon skb */
3491 if (priv->ibss_beacon)
3492 dev_kfree_skb(priv->ibss_beacon);
3493
3494 priv->ibss_beacon = NULL;
3495
3496 priv->beacon_int = priv->hw->conf.beacon_int;
3497 priv->timestamp = 0;
3498 if ((priv->iw_mode == NL80211_IFTYPE_STATION))
3499 priv->beacon_int = 0;
3500
3501 spin_unlock_irqrestore(&priv->lock, flags);
3502
3503 if (!iwl_is_ready_rf(priv)) {
3504 IWL_DEBUG_MAC80211("leave - not ready\n");
3505 mutex_unlock(&priv->mutex);
3506 return;
3507 }
3508
3509 /* we are restarting association process
3510 * clear RXON_FILTER_ASSOC_MSK bit
3511 */
3512 if (priv->iw_mode != NL80211_IFTYPE_AP) {
3513 iwl_scan_cancel_timeout(priv, 100);
3514 priv->staging_rxon.filter_flags &= ~RXON_FILTER_ASSOC_MSK;
3515 iwl4965_commit_rxon(priv);
3516 }
3517
3518 iwl_power_update_mode(priv, 0);
3519
3520 /* Per mac80211.h: This is only used in IBSS mode... */
3521 if (priv->iw_mode != NL80211_IFTYPE_ADHOC) {
3522
3523 /* switch to CAM during association period.
3524 * the ucode will block any association/authentication
3525 * frome during assiciation period if it can not hear
3526 * the AP because of PM. the timer enable PM back is
3527 * association do not complete
3528 */
3529 if (priv->hw->conf.channel->flags & (IEEE80211_CHAN_PASSIVE_SCAN |
3530 IEEE80211_CHAN_RADAR))
3531 iwl_power_disable_management(priv, 3000);
3532
3533 IWL_DEBUG_MAC80211("leave - not in IBSS\n");
3534 mutex_unlock(&priv->mutex);
3535 return;
3536 }
3537
3538 iwl4965_set_rate(priv);
3539
3540 mutex_unlock(&priv->mutex);
3541
3542 IWL_DEBUG_MAC80211("leave\n");
3543 }
3544
3545 static int iwl4965_mac_beacon_update(struct ieee80211_hw *hw, struct sk_buff *skb)
3546 {
3547 struct iwl_priv *priv = hw->priv;
3548 unsigned long flags;
3549 __le64 timestamp;
3550
3551 mutex_lock(&priv->mutex);
3552 IWL_DEBUG_MAC80211("enter\n");
3553
3554 if (!iwl_is_ready_rf(priv)) {
3555 IWL_DEBUG_MAC80211("leave - RF not ready\n");
3556 mutex_unlock(&priv->mutex);
3557 return -EIO;
3558 }
3559
3560 if (priv->iw_mode != NL80211_IFTYPE_ADHOC) {
3561 IWL_DEBUG_MAC80211("leave - not IBSS\n");
3562 mutex_unlock(&priv->mutex);
3563 return -EIO;
3564 }
3565
3566 spin_lock_irqsave(&priv->lock, flags);
3567
3568 if (priv->ibss_beacon)
3569 dev_kfree_skb(priv->ibss_beacon);
3570
3571 priv->ibss_beacon = skb;
3572
3573 priv->assoc_id = 0;
3574 timestamp = ((struct ieee80211_mgmt *)skb->data)->u.beacon.timestamp;
3575 priv->timestamp = le64_to_cpu(timestamp);
3576
3577 IWL_DEBUG_MAC80211("leave\n");
3578 spin_unlock_irqrestore(&priv->lock, flags);
3579
3580 iwl_reset_qos(priv);
3581
3582 iwl4965_post_associate(priv);
3583
3584 mutex_unlock(&priv->mutex);
3585
3586 return 0;
3587 }
3588
3589 /*****************************************************************************
3590 *
3591 * sysfs attributes
3592 *
3593 *****************************************************************************/
3594
3595 #ifdef CONFIG_IWLWIFI_DEBUG
3596
3597 /*
3598 * The following adds a new attribute to the sysfs representation
3599 * of this device driver (i.e. a new file in /sys/bus/pci/drivers/iwl/)
3600 * used for controlling the debug level.
3601 *
3602 * See the level definitions in iwl for details.
3603 */
3604
3605 static ssize_t show_debug_level(struct device *d,
3606 struct device_attribute *attr, char *buf)
3607 {
3608 struct iwl_priv *priv = d->driver_data;
3609
3610 return sprintf(buf, "0x%08X\n", priv->debug_level);
3611 }
3612 static ssize_t store_debug_level(struct device *d,
3613 struct device_attribute *attr,
3614 const char *buf, size_t count)
3615 {
3616 struct iwl_priv *priv = d->driver_data;
3617 unsigned long val;
3618 int ret;
3619
3620 ret = strict_strtoul(buf, 0, &val);
3621 if (ret)
3622 printk(KERN_INFO DRV_NAME
3623 ": %s is not in hex or decimal form.\n", buf);
3624 else
3625 priv->debug_level = val;
3626
3627 return strnlen(buf, count);
3628 }
3629
3630 static DEVICE_ATTR(debug_level, S_IWUSR | S_IRUGO,
3631 show_debug_level, store_debug_level);
3632
3633
3634 #endif /* CONFIG_IWLWIFI_DEBUG */
3635
3636
3637 static ssize_t show_version(struct device *d,
3638 struct device_attribute *attr, char *buf)
3639 {
3640 struct iwl_priv *priv = d->driver_data;
3641 struct iwl_alive_resp *palive = &priv->card_alive;
3642 ssize_t pos = 0;
3643 u16 eeprom_ver;
3644
3645 if (palive->is_valid)
3646 pos += sprintf(buf + pos,
3647 "fw version: 0x%01X.0x%01X.0x%01X.0x%01X\n"
3648 "fw type: 0x%01X 0x%01X\n",
3649 palive->ucode_major, palive->ucode_minor,
3650 palive->sw_rev[0], palive->sw_rev[1],
3651 palive->ver_type, palive->ver_subtype);
3652 else
3653 pos += sprintf(buf + pos, "fw not loaded\n");
3654
3655 if (priv->eeprom) {
3656 eeprom_ver = iwl_eeprom_query16(priv, EEPROM_VERSION);
3657 pos += sprintf(buf + pos, "EEPROM version: 0x%x\n",
3658 eeprom_ver);
3659 } else {
3660 pos += sprintf(buf + pos, "EEPROM not initialzed\n");
3661 }
3662
3663 return pos;
3664 }
3665
3666 static DEVICE_ATTR(version, S_IWUSR | S_IRUGO, show_version, NULL);
3667
3668 static ssize_t show_temperature(struct device *d,
3669 struct device_attribute *attr, char *buf)
3670 {
3671 struct iwl_priv *priv = (struct iwl_priv *)d->driver_data;
3672
3673 if (!iwl_is_alive(priv))
3674 return -EAGAIN;
3675
3676 return sprintf(buf, "%d\n", priv->temperature);
3677 }
3678
3679 static DEVICE_ATTR(temperature, S_IRUGO, show_temperature, NULL);
3680
3681 static ssize_t show_tx_power(struct device *d,
3682 struct device_attribute *attr, char *buf)
3683 {
3684 struct iwl_priv *priv = (struct iwl_priv *)d->driver_data;
3685 return sprintf(buf, "%d\n", priv->tx_power_user_lmt);
3686 }
3687
3688 static ssize_t store_tx_power(struct device *d,
3689 struct device_attribute *attr,
3690 const char *buf, size_t count)
3691 {
3692 struct iwl_priv *priv = (struct iwl_priv *)d->driver_data;
3693 unsigned long val;
3694 int ret;
3695
3696 ret = strict_strtoul(buf, 10, &val);
3697 if (ret)
3698 printk(KERN_INFO DRV_NAME
3699 ": %s is not in decimal form.\n", buf);
3700 else
3701 iwl_set_tx_power(priv, val, false);
3702
3703 return count;
3704 }
3705
3706 static DEVICE_ATTR(tx_power, S_IWUSR | S_IRUGO, show_tx_power, store_tx_power);
3707
3708 static ssize_t show_flags(struct device *d,
3709 struct device_attribute *attr, char *buf)
3710 {
3711 struct iwl_priv *priv = (struct iwl_priv *)d->driver_data;
3712
3713 return sprintf(buf, "0x%04X\n", priv->active_rxon.flags);
3714 }
3715
3716 static ssize_t store_flags(struct device *d,
3717 struct device_attribute *attr,
3718 const char *buf, size_t count)
3719 {
3720 struct iwl_priv *priv = (struct iwl_priv *)d->driver_data;
3721 unsigned long val;
3722 u32 flags;
3723 int ret = strict_strtoul(buf, 0, &val);
3724 if (ret)
3725 return ret;
3726 flags = (u32)val;
3727
3728 mutex_lock(&priv->mutex);
3729 if (le32_to_cpu(priv->staging_rxon.flags) != flags) {
3730 /* Cancel any currently running scans... */
3731 if (iwl_scan_cancel_timeout(priv, 100))
3732 IWL_WARNING("Could not cancel scan.\n");
3733 else {
3734 IWL_DEBUG_INFO("Commit rxon.flags = 0x%04X\n", flags);
3735 priv->staging_rxon.flags = cpu_to_le32(flags);
3736 iwl4965_commit_rxon(priv);
3737 }
3738 }
3739 mutex_unlock(&priv->mutex);
3740
3741 return count;
3742 }
3743
3744 static DEVICE_ATTR(flags, S_IWUSR | S_IRUGO, show_flags, store_flags);
3745
3746 static ssize_t show_filter_flags(struct device *d,
3747 struct device_attribute *attr, char *buf)
3748 {
3749 struct iwl_priv *priv = (struct iwl_priv *)d->driver_data;
3750
3751 return sprintf(buf, "0x%04X\n",
3752 le32_to_cpu(priv->active_rxon.filter_flags));
3753 }
3754
3755 static ssize_t store_filter_flags(struct device *d,
3756 struct device_attribute *attr,
3757 const char *buf, size_t count)
3758 {
3759 struct iwl_priv *priv = (struct iwl_priv *)d->driver_data;
3760 unsigned long val;
3761 u32 filter_flags;
3762 int ret = strict_strtoul(buf, 0, &val);
3763 if (ret)
3764 return ret;
3765 filter_flags = (u32)val;
3766
3767 mutex_lock(&priv->mutex);
3768 if (le32_to_cpu(priv->staging_rxon.filter_flags) != filter_flags) {
3769 /* Cancel any currently running scans... */
3770 if (iwl_scan_cancel_timeout(priv, 100))
3771 IWL_WARNING("Could not cancel scan.\n");
3772 else {
3773 IWL_DEBUG_INFO("Committing rxon.filter_flags = "
3774 "0x%04X\n", filter_flags);
3775 priv->staging_rxon.filter_flags =
3776 cpu_to_le32(filter_flags);
3777 iwl4965_commit_rxon(priv);
3778 }
3779 }
3780 mutex_unlock(&priv->mutex);
3781
3782 return count;
3783 }
3784
3785 static DEVICE_ATTR(filter_flags, S_IWUSR | S_IRUGO, show_filter_flags,
3786 store_filter_flags);
3787
3788 #ifdef CONFIG_IWLAGN_SPECTRUM_MEASUREMENT
3789
3790 static ssize_t show_measurement(struct device *d,
3791 struct device_attribute *attr, char *buf)
3792 {
3793 struct iwl_priv *priv = dev_get_drvdata(d);
3794 struct iwl4965_spectrum_notification measure_report;
3795 u32 size = sizeof(measure_report), len = 0, ofs = 0;
3796 u8 *data = (u8 *)&measure_report;
3797 unsigned long flags;
3798
3799 spin_lock_irqsave(&priv->lock, flags);
3800 if (!(priv->measurement_status & MEASUREMENT_READY)) {
3801 spin_unlock_irqrestore(&priv->lock, flags);
3802 return 0;
3803 }
3804 memcpy(&measure_report, &priv->measure_report, size);
3805 priv->measurement_status = 0;
3806 spin_unlock_irqrestore(&priv->lock, flags);
3807
3808 while (size && (PAGE_SIZE - len)) {
3809 hex_dump_to_buffer(data + ofs, size, 16, 1, buf + len,
3810 PAGE_SIZE - len, 1);
3811 len = strlen(buf);
3812 if (PAGE_SIZE - len)
3813 buf[len++] = '\n';
3814
3815 ofs += 16;
3816 size -= min(size, 16U);
3817 }
3818
3819 return len;
3820 }
3821
3822 static ssize_t store_measurement(struct device *d,
3823 struct device_attribute *attr,
3824 const char *buf, size_t count)
3825 {
3826 struct iwl_priv *priv = dev_get_drvdata(d);
3827 struct ieee80211_measurement_params params = {
3828 .channel = le16_to_cpu(priv->active_rxon.channel),
3829 .start_time = cpu_to_le64(priv->last_tsf),
3830 .duration = cpu_to_le16(1),
3831 };
3832 u8 type = IWL_MEASURE_BASIC;
3833 u8 buffer[32];
3834 u8 channel;
3835
3836 if (count) {
3837 char *p = buffer;
3838 strncpy(buffer, buf, min(sizeof(buffer), count));
3839 channel = simple_strtoul(p, NULL, 0);
3840 if (channel)
3841 params.channel = channel;
3842
3843 p = buffer;
3844 while (*p && *p != ' ')
3845 p++;
3846 if (*p)
3847 type = simple_strtoul(p + 1, NULL, 0);
3848 }
3849
3850 IWL_DEBUG_INFO("Invoking measurement of type %d on "
3851 "channel %d (for '%s')\n", type, params.channel, buf);
3852 iwl4965_get_measurement(priv, &params, type);
3853
3854 return count;
3855 }
3856
3857 static DEVICE_ATTR(measurement, S_IRUSR | S_IWUSR,
3858 show_measurement, store_measurement);
3859 #endif /* CONFIG_IWLAGN_SPECTRUM_MEASUREMENT */
3860
3861 static ssize_t store_retry_rate(struct device *d,
3862 struct device_attribute *attr,
3863 const char *buf, size_t count)
3864 {
3865 struct iwl_priv *priv = dev_get_drvdata(d);
3866 long val;
3867 int ret = strict_strtol(buf, 10, &val);
3868 if (!ret)
3869 return ret;
3870
3871 priv->retry_rate = (val > 0) ? val : 1;
3872
3873 return count;
3874 }
3875
3876 static ssize_t show_retry_rate(struct device *d,
3877 struct device_attribute *attr, char *buf)
3878 {
3879 struct iwl_priv *priv = dev_get_drvdata(d);
3880 return sprintf(buf, "%d", priv->retry_rate);
3881 }
3882
3883 static DEVICE_ATTR(retry_rate, S_IWUSR | S_IRUSR, show_retry_rate,
3884 store_retry_rate);
3885
3886 static ssize_t store_power_level(struct device *d,
3887 struct device_attribute *attr,
3888 const char *buf, size_t count)
3889 {
3890 struct iwl_priv *priv = dev_get_drvdata(d);
3891 int ret;
3892 unsigned long mode;
3893
3894
3895 mutex_lock(&priv->mutex);
3896
3897 if (!iwl_is_ready(priv)) {
3898 ret = -EAGAIN;
3899 goto out;
3900 }
3901
3902 ret = strict_strtoul(buf, 10, &mode);
3903 if (ret)
3904 goto out;
3905
3906 ret = iwl_power_set_user_mode(priv, mode);
3907 if (ret) {
3908 IWL_DEBUG_MAC80211("failed setting power mode.\n");
3909 goto out;
3910 }
3911 ret = count;
3912
3913 out:
3914 mutex_unlock(&priv->mutex);
3915 return ret;
3916 }
3917
3918 static ssize_t show_power_level(struct device *d,
3919 struct device_attribute *attr, char *buf)
3920 {
3921 struct iwl_priv *priv = dev_get_drvdata(d);
3922 int mode = priv->power_data.user_power_setting;
3923 int system = priv->power_data.system_power_setting;
3924 int level = priv->power_data.power_mode;
3925 char *p = buf;
3926
3927 switch (system) {
3928 case IWL_POWER_SYS_AUTO:
3929 p += sprintf(p, "SYSTEM:auto");
3930 break;
3931 case IWL_POWER_SYS_AC:
3932 p += sprintf(p, "SYSTEM:ac");
3933 break;
3934 case IWL_POWER_SYS_BATTERY:
3935 p += sprintf(p, "SYSTEM:battery");
3936 break;
3937 }
3938
3939 p += sprintf(p, "\tMODE:%s", (mode < IWL_POWER_AUTO)?"fixed":"auto");
3940 p += sprintf(p, "\tINDEX:%d", level);
3941 p += sprintf(p, "\n");
3942 return p - buf + 1;
3943 }
3944
3945 static DEVICE_ATTR(power_level, S_IWUSR | S_IRUSR, show_power_level,
3946 store_power_level);
3947
3948 static ssize_t show_channels(struct device *d,
3949 struct device_attribute *attr, char *buf)
3950 {
3951
3952 struct iwl_priv *priv = dev_get_drvdata(d);
3953 struct ieee80211_channel *channels = NULL;
3954 const struct ieee80211_supported_band *supp_band = NULL;
3955 int len = 0, i;
3956 int count = 0;
3957
3958 if (!test_bit(STATUS_GEO_CONFIGURED, &priv->status))
3959 return -EAGAIN;
3960
3961 supp_band = iwl_get_hw_mode(priv, IEEE80211_BAND_2GHZ);
3962 channels = supp_band->channels;
3963 count = supp_band->n_channels;
3964
3965 len += sprintf(&buf[len],
3966 "Displaying %d channels in 2.4GHz band "
3967 "(802.11bg):\n", count);
3968
3969 for (i = 0; i < count; i++)
3970 len += sprintf(&buf[len], "%d: %ddBm: BSS%s%s, %s.\n",
3971 ieee80211_frequency_to_channel(
3972 channels[i].center_freq),
3973 channels[i].max_power,
3974 channels[i].flags & IEEE80211_CHAN_RADAR ?
3975 " (IEEE 802.11h required)" : "",
3976 (!(channels[i].flags & IEEE80211_CHAN_NO_IBSS)
3977 || (channels[i].flags &
3978 IEEE80211_CHAN_RADAR)) ? "" :
3979 ", IBSS",
3980 channels[i].flags &
3981 IEEE80211_CHAN_PASSIVE_SCAN ?
3982 "passive only" : "active/passive");
3983
3984 supp_band = iwl_get_hw_mode(priv, IEEE80211_BAND_5GHZ);
3985 channels = supp_band->channels;
3986 count = supp_band->n_channels;
3987
3988 len += sprintf(&buf[len], "Displaying %d channels in 5.2GHz band "
3989 "(802.11a):\n", count);
3990
3991 for (i = 0; i < count; i++)
3992 len += sprintf(&buf[len], "%d: %ddBm: BSS%s%s, %s.\n",
3993 ieee80211_frequency_to_channel(
3994 channels[i].center_freq),
3995 channels[i].max_power,
3996 channels[i].flags & IEEE80211_CHAN_RADAR ?
3997 " (IEEE 802.11h required)" : "",
3998 ((channels[i].flags & IEEE80211_CHAN_NO_IBSS)
3999 || (channels[i].flags &
4000 IEEE80211_CHAN_RADAR)) ? "" :
4001 ", IBSS",
4002 channels[i].flags &
4003 IEEE80211_CHAN_PASSIVE_SCAN ?
4004 "passive only" : "active/passive");
4005
4006 return len;
4007 }
4008
4009 static DEVICE_ATTR(channels, S_IRUSR, show_channels, NULL);
4010
4011 static ssize_t show_statistics(struct device *d,
4012 struct device_attribute *attr, char *buf)
4013 {
4014 struct iwl_priv *priv = dev_get_drvdata(d);
4015 u32 size = sizeof(struct iwl_notif_statistics);
4016 u32 len = 0, ofs = 0;
4017 u8 *data = (u8 *)&priv->statistics;
4018 int rc = 0;
4019
4020 if (!iwl_is_alive(priv))
4021 return -EAGAIN;
4022
4023 mutex_lock(&priv->mutex);
4024 rc = iwl_send_statistics_request(priv, 0);
4025 mutex_unlock(&priv->mutex);
4026
4027 if (rc) {
4028 len = sprintf(buf,
4029 "Error sending statistics request: 0x%08X\n", rc);
4030 return len;
4031 }
4032
4033 while (size && (PAGE_SIZE - len)) {
4034 hex_dump_to_buffer(data + ofs, size, 16, 1, buf + len,
4035 PAGE_SIZE - len, 1);
4036 len = strlen(buf);
4037 if (PAGE_SIZE - len)
4038 buf[len++] = '\n';
4039
4040 ofs += 16;
4041 size -= min(size, 16U);
4042 }
4043
4044 return len;
4045 }
4046
4047 static DEVICE_ATTR(statistics, S_IRUGO, show_statistics, NULL);
4048
4049 static ssize_t show_status(struct device *d,
4050 struct device_attribute *attr, char *buf)
4051 {
4052 struct iwl_priv *priv = (struct iwl_priv *)d->driver_data;
4053 if (!iwl_is_alive(priv))
4054 return -EAGAIN;
4055 return sprintf(buf, "0x%08x\n", (int)priv->status);
4056 }
4057
4058 static DEVICE_ATTR(status, S_IRUGO, show_status, NULL);
4059
4060 /*****************************************************************************
4061 *
4062 * driver setup and teardown
4063 *
4064 *****************************************************************************/
4065
4066 static void iwl_setup_deferred_work(struct iwl_priv *priv)
4067 {
4068 priv->workqueue = create_workqueue(DRV_NAME);
4069
4070 init_waitqueue_head(&priv->wait_command_queue);
4071
4072 INIT_WORK(&priv->up, iwl4965_bg_up);
4073 INIT_WORK(&priv->restart, iwl4965_bg_restart);
4074 INIT_WORK(&priv->rx_replenish, iwl4965_bg_rx_replenish);
4075 INIT_WORK(&priv->rf_kill, iwl4965_bg_rf_kill);
4076 INIT_WORK(&priv->beacon_update, iwl4965_bg_beacon_update);
4077 INIT_WORK(&priv->set_monitor, iwl4965_bg_set_monitor);
4078 INIT_WORK(&priv->run_time_calib_work, iwl_bg_run_time_calib_work);
4079 INIT_DELAYED_WORK(&priv->init_alive_start, iwl_bg_init_alive_start);
4080 INIT_DELAYED_WORK(&priv->alive_start, iwl_bg_alive_start);
4081
4082 iwl_setup_scan_deferred_work(priv);
4083 iwl_setup_power_deferred_work(priv);
4084
4085 if (priv->cfg->ops->lib->setup_deferred_work)
4086 priv->cfg->ops->lib->setup_deferred_work(priv);
4087
4088 init_timer(&priv->statistics_periodic);
4089 priv->statistics_periodic.data = (unsigned long)priv;
4090 priv->statistics_periodic.function = iwl4965_bg_statistics_periodic;
4091
4092 tasklet_init(&priv->irq_tasklet, (void (*)(unsigned long))
4093 iwl4965_irq_tasklet, (unsigned long)priv);
4094 }
4095
4096 static void iwl_cancel_deferred_work(struct iwl_priv *priv)
4097 {
4098 if (priv->cfg->ops->lib->cancel_deferred_work)
4099 priv->cfg->ops->lib->cancel_deferred_work(priv);
4100
4101 cancel_delayed_work_sync(&priv->init_alive_start);
4102 cancel_delayed_work(&priv->scan_check);
4103 cancel_delayed_work_sync(&priv->set_power_save);
4104 cancel_delayed_work(&priv->alive_start);
4105 cancel_work_sync(&priv->beacon_update);
4106 del_timer_sync(&priv->statistics_periodic);
4107 }
4108
4109 static struct attribute *iwl4965_sysfs_entries[] = {
4110 &dev_attr_channels.attr,
4111 &dev_attr_flags.attr,
4112 &dev_attr_filter_flags.attr,
4113 #ifdef CONFIG_IWLAGN_SPECTRUM_MEASUREMENT
4114 &dev_attr_measurement.attr,
4115 #endif
4116 &dev_attr_power_level.attr,
4117 &dev_attr_retry_rate.attr,
4118 &dev_attr_statistics.attr,
4119 &dev_attr_status.attr,
4120 &dev_attr_temperature.attr,
4121 &dev_attr_tx_power.attr,
4122 #ifdef CONFIG_IWLWIFI_DEBUG
4123 &dev_attr_debug_level.attr,
4124 #endif
4125 &dev_attr_version.attr,
4126
4127 NULL
4128 };
4129
4130 static struct attribute_group iwl4965_attribute_group = {
4131 .name = NULL, /* put in device directory */
4132 .attrs = iwl4965_sysfs_entries,
4133 };
4134
4135 static struct ieee80211_ops iwl4965_hw_ops = {
4136 .tx = iwl4965_mac_tx,
4137 .start = iwl4965_mac_start,
4138 .stop = iwl4965_mac_stop,
4139 .add_interface = iwl4965_mac_add_interface,
4140 .remove_interface = iwl4965_mac_remove_interface,
4141 .config = iwl4965_mac_config,
4142 .config_interface = iwl4965_mac_config_interface,
4143 .configure_filter = iwl4965_configure_filter,
4144 .set_key = iwl4965_mac_set_key,
4145 .update_tkip_key = iwl4965_mac_update_tkip_key,
4146 .get_stats = iwl4965_mac_get_stats,
4147 .get_tx_stats = iwl4965_mac_get_tx_stats,
4148 .conf_tx = iwl4965_mac_conf_tx,
4149 .reset_tsf = iwl4965_mac_reset_tsf,
4150 .bss_info_changed = iwl4965_bss_info_changed,
4151 .ampdu_action = iwl4965_mac_ampdu_action,
4152 .hw_scan = iwl_mac_hw_scan
4153 };
4154
4155 static int iwl4965_pci_probe(struct pci_dev *pdev, const struct pci_device_id *ent)
4156 {
4157 int err = 0;
4158 struct iwl_priv *priv;
4159 struct ieee80211_hw *hw;
4160 struct iwl_cfg *cfg = (struct iwl_cfg *)(ent->driver_data);
4161 unsigned long flags;
4162
4163 /************************
4164 * 1. Allocating HW data
4165 ************************/
4166
4167 /* Disabling hardware scan means that mac80211 will perform scans
4168 * "the hard way", rather than using device's scan. */
4169 if (cfg->mod_params->disable_hw_scan) {
4170 if (cfg->mod_params->debug & IWL_DL_INFO)
4171 dev_printk(KERN_DEBUG, &(pdev->dev),
4172 "Disabling hw_scan\n");
4173 iwl4965_hw_ops.hw_scan = NULL;
4174 }
4175
4176 hw = iwl_alloc_all(cfg, &iwl4965_hw_ops);
4177 if (!hw) {
4178 err = -ENOMEM;
4179 goto out;
4180 }
4181 priv = hw->priv;
4182 /* At this point both hw and priv are allocated. */
4183
4184 SET_IEEE80211_DEV(hw, &pdev->dev);
4185
4186 IWL_DEBUG_INFO("*** LOAD DRIVER ***\n");
4187 priv->cfg = cfg;
4188 priv->pci_dev = pdev;
4189
4190 #ifdef CONFIG_IWLWIFI_DEBUG
4191 priv->debug_level = priv->cfg->mod_params->debug;
4192 atomic_set(&priv->restrict_refcnt, 0);
4193 #endif
4194
4195 /**************************
4196 * 2. Initializing PCI bus
4197 **************************/
4198 if (pci_enable_device(pdev)) {
4199 err = -ENODEV;
4200 goto out_ieee80211_free_hw;
4201 }
4202
4203 pci_set_master(pdev);
4204
4205 err = pci_set_dma_mask(pdev, DMA_BIT_MASK(36));
4206 if (!err)
4207 err = pci_set_consistent_dma_mask(pdev, DMA_BIT_MASK(36));
4208 if (err) {
4209 err = pci_set_dma_mask(pdev, DMA_BIT_MASK(32));
4210 if (!err)
4211 err = pci_set_consistent_dma_mask(pdev, DMA_BIT_MASK(32));
4212 /* both attempts failed: */
4213 if (err) {
4214 printk(KERN_WARNING "%s: No suitable DMA available.\n",
4215 DRV_NAME);
4216 goto out_pci_disable_device;
4217 }
4218 }
4219
4220 err = pci_request_regions(pdev, DRV_NAME);
4221 if (err)
4222 goto out_pci_disable_device;
4223
4224 pci_set_drvdata(pdev, priv);
4225
4226
4227 /***********************
4228 * 3. Read REV register
4229 ***********************/
4230 priv->hw_base = pci_iomap(pdev, 0, 0);
4231 if (!priv->hw_base) {
4232 err = -ENODEV;
4233 goto out_pci_release_regions;
4234 }
4235
4236 IWL_DEBUG_INFO("pci_resource_len = 0x%08llx\n",
4237 (unsigned long long) pci_resource_len(pdev, 0));
4238 IWL_DEBUG_INFO("pci_resource_base = %p\n", priv->hw_base);
4239
4240 iwl_hw_detect(priv);
4241 printk(KERN_INFO DRV_NAME
4242 ": Detected Intel Wireless WiFi Link %s REV=0x%X\n",
4243 priv->cfg->name, priv->hw_rev);
4244
4245 /* We disable the RETRY_TIMEOUT register (0x41) to keep
4246 * PCI Tx retries from interfering with C3 CPU state */
4247 pci_write_config_byte(pdev, PCI_CFG_RETRY_TIMEOUT, 0x00);
4248
4249 /* amp init */
4250 err = priv->cfg->ops->lib->apm_ops.init(priv);
4251 if (err < 0) {
4252 IWL_DEBUG_INFO("Failed to init APMG\n");
4253 goto out_iounmap;
4254 }
4255 /*****************
4256 * 4. Read EEPROM
4257 *****************/
4258 /* Read the EEPROM */
4259 err = iwl_eeprom_init(priv);
4260 if (err) {
4261 IWL_ERROR("Unable to init EEPROM\n");
4262 goto out_iounmap;
4263 }
4264 err = iwl_eeprom_check_version(priv);
4265 if (err)
4266 goto out_iounmap;
4267
4268 /* extract MAC Address */
4269 iwl_eeprom_get_mac(priv, priv->mac_addr);
4270 IWL_DEBUG_INFO("MAC address: %pM\n", priv->mac_addr);
4271 SET_IEEE80211_PERM_ADDR(priv->hw, priv->mac_addr);
4272
4273 /************************
4274 * 5. Setup HW constants
4275 ************************/
4276 if (iwl_set_hw_params(priv)) {
4277 IWL_ERROR("failed to set hw parameters\n");
4278 goto out_free_eeprom;
4279 }
4280
4281 /*******************
4282 * 6. Setup priv
4283 *******************/
4284
4285 err = iwl_init_drv(priv);
4286 if (err)
4287 goto out_free_eeprom;
4288 /* At this point both hw and priv are initialized. */
4289
4290 /**********************************
4291 * 7. Initialize module parameters
4292 **********************************/
4293
4294 /* Disable radio (SW RF KILL) via parameter when loading driver */
4295 if (priv->cfg->mod_params->disable) {
4296 set_bit(STATUS_RF_KILL_SW, &priv->status);
4297 IWL_DEBUG_INFO("Radio disabled.\n");
4298 }
4299
4300 /********************
4301 * 8. Setup services
4302 ********************/
4303 spin_lock_irqsave(&priv->lock, flags);
4304 iwl4965_disable_interrupts(priv);
4305 spin_unlock_irqrestore(&priv->lock, flags);
4306
4307 err = sysfs_create_group(&pdev->dev.kobj, &iwl4965_attribute_group);
4308 if (err) {
4309 IWL_ERROR("failed to create sysfs device attributes\n");
4310 goto out_uninit_drv;
4311 }
4312
4313
4314 iwl_setup_deferred_work(priv);
4315 iwl_setup_rx_handlers(priv);
4316
4317 /********************
4318 * 9. Conclude
4319 ********************/
4320 pci_save_state(pdev);
4321 pci_disable_device(pdev);
4322
4323 /**********************************
4324 * 10. Setup and register mac80211
4325 **********************************/
4326
4327 err = iwl_setup_mac(priv);
4328 if (err)
4329 goto out_remove_sysfs;
4330
4331 err = iwl_dbgfs_register(priv, DRV_NAME);
4332 if (err)
4333 IWL_ERROR("failed to create debugfs files\n");
4334
4335 err = iwl_rfkill_init(priv);
4336 if (err)
4337 IWL_ERROR("Unable to initialize RFKILL system. "
4338 "Ignoring error: %d\n", err);
4339 iwl_power_initialize(priv);
4340 return 0;
4341
4342 out_remove_sysfs:
4343 sysfs_remove_group(&pdev->dev.kobj, &iwl4965_attribute_group);
4344 out_uninit_drv:
4345 iwl_uninit_drv(priv);
4346 out_free_eeprom:
4347 iwl_eeprom_free(priv);
4348 out_iounmap:
4349 pci_iounmap(pdev, priv->hw_base);
4350 out_pci_release_regions:
4351 pci_release_regions(pdev);
4352 pci_set_drvdata(pdev, NULL);
4353 out_pci_disable_device:
4354 pci_disable_device(pdev);
4355 out_ieee80211_free_hw:
4356 ieee80211_free_hw(priv->hw);
4357 out:
4358 return err;
4359 }
4360
4361 static void __devexit iwl4965_pci_remove(struct pci_dev *pdev)
4362 {
4363 struct iwl_priv *priv = pci_get_drvdata(pdev);
4364 unsigned long flags;
4365
4366 if (!priv)
4367 return;
4368
4369 IWL_DEBUG_INFO("*** UNLOAD DRIVER ***\n");
4370
4371 iwl_dbgfs_unregister(priv);
4372 sysfs_remove_group(&pdev->dev.kobj, &iwl4965_attribute_group);
4373
4374 /* ieee80211_unregister_hw call wil cause iwl4965_mac_stop to
4375 * to be called and iwl4965_down since we are removing the device
4376 * we need to set STATUS_EXIT_PENDING bit.
4377 */
4378 set_bit(STATUS_EXIT_PENDING, &priv->status);
4379 if (priv->mac80211_registered) {
4380 ieee80211_unregister_hw(priv->hw);
4381 priv->mac80211_registered = 0;
4382 } else {
4383 iwl4965_down(priv);
4384 }
4385
4386 /* make sure we flush any pending irq or
4387 * tasklet for the driver
4388 */
4389 spin_lock_irqsave(&priv->lock, flags);
4390 iwl4965_disable_interrupts(priv);
4391 spin_unlock_irqrestore(&priv->lock, flags);
4392
4393 iwl_synchronize_irq(priv);
4394
4395 iwl_rfkill_unregister(priv);
4396 iwl4965_dealloc_ucode_pci(priv);
4397
4398 if (priv->rxq.bd)
4399 iwl_rx_queue_free(priv, &priv->rxq);
4400 iwl_hw_txq_ctx_free(priv);
4401
4402 iwl_clear_stations_table(priv);
4403 iwl_eeprom_free(priv);
4404
4405
4406 /*netif_stop_queue(dev); */
4407 flush_workqueue(priv->workqueue);
4408
4409 /* ieee80211_unregister_hw calls iwl4965_mac_stop, which flushes
4410 * priv->workqueue... so we can't take down the workqueue
4411 * until now... */
4412 destroy_workqueue(priv->workqueue);
4413 priv->workqueue = NULL;
4414
4415 pci_iounmap(pdev, priv->hw_base);
4416 pci_release_regions(pdev);
4417 pci_disable_device(pdev);
4418 pci_set_drvdata(pdev, NULL);
4419
4420 iwl_uninit_drv(priv);
4421
4422 if (priv->ibss_beacon)
4423 dev_kfree_skb(priv->ibss_beacon);
4424
4425 ieee80211_free_hw(priv->hw);
4426 }
4427
4428 #ifdef CONFIG_PM
4429
4430 static int iwl4965_pci_suspend(struct pci_dev *pdev, pm_message_t state)
4431 {
4432 struct iwl_priv *priv = pci_get_drvdata(pdev);
4433
4434 if (priv->is_open) {
4435 set_bit(STATUS_IN_SUSPEND, &priv->status);
4436 iwl4965_mac_stop(priv->hw);
4437 priv->is_open = 1;
4438 }
4439
4440 pci_set_power_state(pdev, PCI_D3hot);
4441
4442 return 0;
4443 }
4444
4445 static int iwl4965_pci_resume(struct pci_dev *pdev)
4446 {
4447 struct iwl_priv *priv = pci_get_drvdata(pdev);
4448
4449 pci_set_power_state(pdev, PCI_D0);
4450
4451 if (priv->is_open)
4452 iwl4965_mac_start(priv->hw);
4453
4454 clear_bit(STATUS_IN_SUSPEND, &priv->status);
4455 return 0;
4456 }
4457
4458 #endif /* CONFIG_PM */
4459
4460 /*****************************************************************************
4461 *
4462 * driver and module entry point
4463 *
4464 *****************************************************************************/
4465
4466 /* Hardware specific file defines the PCI IDs table for that hardware module */
4467 static struct pci_device_id iwl_hw_card_ids[] = {
4468 #ifdef CONFIG_IWL4965
4469 {IWL_PCI_DEVICE(0x4229, PCI_ANY_ID, iwl4965_agn_cfg)},
4470 {IWL_PCI_DEVICE(0x4230, PCI_ANY_ID, iwl4965_agn_cfg)},
4471 #endif /* CONFIG_IWL4965 */
4472 #ifdef CONFIG_IWL5000
4473 {IWL_PCI_DEVICE(0x4232, 0x1205, iwl5100_bg_cfg)},
4474 {IWL_PCI_DEVICE(0x4232, 0x1305, iwl5100_bg_cfg)},
4475 {IWL_PCI_DEVICE(0x4232, 0x1206, iwl5100_abg_cfg)},
4476 {IWL_PCI_DEVICE(0x4232, 0x1306, iwl5100_abg_cfg)},
4477 {IWL_PCI_DEVICE(0x4232, 0x1326, iwl5100_abg_cfg)},
4478 {IWL_PCI_DEVICE(0x4237, 0x1216, iwl5100_abg_cfg)},
4479 {IWL_PCI_DEVICE(0x4232, PCI_ANY_ID, iwl5100_agn_cfg)},
4480 {IWL_PCI_DEVICE(0x4235, PCI_ANY_ID, iwl5300_agn_cfg)},
4481 {IWL_PCI_DEVICE(0x4236, PCI_ANY_ID, iwl5300_agn_cfg)},
4482 {IWL_PCI_DEVICE(0x4237, PCI_ANY_ID, iwl5100_agn_cfg)},
4483 /* 5350 WiFi/WiMax */
4484 {IWL_PCI_DEVICE(0x423A, 0x1001, iwl5350_agn_cfg)},
4485 {IWL_PCI_DEVICE(0x423A, 0x1021, iwl5350_agn_cfg)},
4486 {IWL_PCI_DEVICE(0x423B, 0x1011, iwl5350_agn_cfg)},
4487 #endif /* CONFIG_IWL5000 */
4488 {0}
4489 };
4490 MODULE_DEVICE_TABLE(pci, iwl_hw_card_ids);
4491
4492 static struct pci_driver iwl_driver = {
4493 .name = DRV_NAME,
4494 .id_table = iwl_hw_card_ids,
4495 .probe = iwl4965_pci_probe,
4496 .remove = __devexit_p(iwl4965_pci_remove),
4497 #ifdef CONFIG_PM
4498 .suspend = iwl4965_pci_suspend,
4499 .resume = iwl4965_pci_resume,
4500 #endif
4501 };
4502
4503 static int __init iwl4965_init(void)
4504 {
4505
4506 int ret;
4507 printk(KERN_INFO DRV_NAME ": " DRV_DESCRIPTION ", " DRV_VERSION "\n");
4508 printk(KERN_INFO DRV_NAME ": " DRV_COPYRIGHT "\n");
4509
4510 ret = iwlagn_rate_control_register();
4511 if (ret) {
4512 IWL_ERROR("Unable to register rate control algorithm: %d\n", ret);
4513 return ret;
4514 }
4515
4516 ret = pci_register_driver(&iwl_driver);
4517 if (ret) {
4518 IWL_ERROR("Unable to initialize PCI module\n");
4519 goto error_register;
4520 }
4521
4522 return ret;
4523
4524 error_register:
4525 iwlagn_rate_control_unregister();
4526 return ret;
4527 }
4528
4529 static void __exit iwl4965_exit(void)
4530 {
4531 pci_unregister_driver(&iwl_driver);
4532 iwlagn_rate_control_unregister();
4533 }
4534
4535 module_exit(iwl4965_exit);
4536 module_init(iwl4965_init);
Linux kernel - Deliverables
This page took 0.128328 seconds and 5 git commands to generate.