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iwlwifi: move iwl4965_rf_kill_ct_config to iwl-core.c
[deliverable/linux.git] / drivers / net / wireless / iwlwifi / iwl4965-base.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/version.h>
33 #include <linux/init.h>
34 #include <linux/pci.h>
35 #include <linux/dma-mapping.h>
36 #include <linux/delay.h>
37 #include <linux/skbuff.h>
38 #include <linux/netdevice.h>
39 #include <linux/wireless.h>
40 #include <linux/firmware.h>
41 #include <linux/etherdevice.h>
42 #include <linux/if_arp.h>
43
44 #include <net/mac80211.h>
45
46 #include <asm/div64.h>
47
48 #include "iwl-eeprom.h"
49 #include "iwl-dev.h"
50 #include "iwl-core.h"
51 #include "iwl-io.h"
52 #include "iwl-helpers.h"
53 #include "iwl-sta.h"
54 #include "iwl-calib.h"
55
56
57 /******************************************************************************
58 *
59 * module boiler plate
60 *
61 ******************************************************************************/
62
63 /*
64 * module name, copyright, version, etc.
65 * NOTE: DRV_NAME is defined in iwlwifi.h for use by iwl-debug.h and printk
66 */
67
68 #define DRV_DESCRIPTION "Intel(R) Wireless WiFi Link 4965AGN driver for Linux"
69
70 #ifdef CONFIG_IWLWIFI_DEBUG
71 #define VD "d"
72 #else
73 #define VD
74 #endif
75
76 #ifdef CONFIG_IWL4965_SPECTRUM_MEASUREMENT
77 #define VS "s"
78 #else
79 #define VS
80 #endif
81
82 #define DRV_VERSION IWLWIFI_VERSION VD VS
83
84
85 MODULE_DESCRIPTION(DRV_DESCRIPTION);
86 MODULE_VERSION(DRV_VERSION);
87 MODULE_AUTHOR(DRV_COPYRIGHT);
88 MODULE_LICENSE("GPL");
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 * iwl4965_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 iwl4965_full_rxon_required(struct iwl_priv *priv)
192 {
193
194 /* These items are only settable from the full RXON command */
195 if (!(priv->active_rxon.filter_flags & RXON_FILTER_ASSOC_MSK) ||
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.rx_chain != priv->active_rxon.rx_chain) ||
211 (priv->staging_rxon.assoc_id != priv->active_rxon.assoc_id))
212 return 1;
213
214 /* flags, filter_flags, ofdm_basic_rates, and cck_basic_rates can
215 * be updated with the RXON_ASSOC command -- however only some
216 * flag transitions are allowed using RXON_ASSOC */
217
218 /* Check if we are not switching bands */
219 if ((priv->staging_rxon.flags & RXON_FLG_BAND_24G_MSK) !=
220 (priv->active_rxon.flags & RXON_FLG_BAND_24G_MSK))
221 return 1;
222
223 /* Check if we are switching association toggle */
224 if ((priv->staging_rxon.filter_flags & RXON_FILTER_ASSOC_MSK) !=
225 (priv->active_rxon.filter_flags & RXON_FILTER_ASSOC_MSK))
226 return 1;
227
228 return 0;
229 }
230
231 /**
232 * iwl4965_commit_rxon - commit staging_rxon to hardware
233 *
234 * The RXON command in staging_rxon is committed to the hardware and
235 * the active_rxon structure is updated with the new data. This
236 * function correctly transitions out of the RXON_ASSOC_MSK state if
237 * a HW tune is required based on the RXON structure changes.
238 */
239 static int iwl4965_commit_rxon(struct iwl_priv *priv)
240 {
241 /* cast away the const for active_rxon in this function */
242 struct iwl_rxon_cmd *active_rxon = (void *)&priv->active_rxon;
243 DECLARE_MAC_BUF(mac);
244 int rc = 0;
245
246 if (!iwl_is_alive(priv))
247 return -1;
248
249 /* always get timestamp with Rx frame */
250 priv->staging_rxon.flags |= RXON_FLG_TSF2HOST_MSK;
251
252 rc = iwl4965_check_rxon_cmd(&priv->staging_rxon);
253 if (rc) {
254 IWL_ERROR("Invalid RXON configuration. Not committing.\n");
255 return -EINVAL;
256 }
257
258 /* If we don't need to send a full RXON, we can use
259 * iwl4965_rxon_assoc_cmd which is used to reconfigure filter
260 * and other flags for the current radio configuration. */
261 if (!iwl4965_full_rxon_required(priv)) {
262 rc = iwl_send_rxon_assoc(priv);
263 if (rc) {
264 IWL_ERROR("Error setting RXON_ASSOC "
265 "configuration (%d).\n", rc);
266 return rc;
267 }
268
269 memcpy(active_rxon, &priv->staging_rxon, sizeof(*active_rxon));
270
271 return 0;
272 }
273
274 /* station table will be cleared */
275 priv->assoc_station_added = 0;
276
277 /* If we are currently associated and the new config requires
278 * an RXON_ASSOC and the new config wants the associated mask enabled,
279 * we must clear the associated from the active configuration
280 * before we apply the new config */
281 if (iwl_is_associated(priv) &&
282 (priv->staging_rxon.filter_flags & RXON_FILTER_ASSOC_MSK)) {
283 IWL_DEBUG_INFO("Toggling associated bit on current RXON\n");
284 active_rxon->filter_flags &= ~RXON_FILTER_ASSOC_MSK;
285
286 rc = 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 (rc) {
293 active_rxon->filter_flags |= RXON_FILTER_ASSOC_MSK;
294 IWL_ERROR("Error clearing ASSOC_MSK on current "
295 "configuration (%d).\n", rc);
296 return rc;
297 }
298 }
299
300 IWL_DEBUG_INFO("Sending RXON\n"
301 "* with%s RXON_FILTER_ASSOC_MSK\n"
302 "* channel = %d\n"
303 "* bssid = %s\n",
304 ((priv->staging_rxon.filter_flags &
305 RXON_FILTER_ASSOC_MSK) ? "" : "out"),
306 le16_to_cpu(priv->staging_rxon.channel),
307 print_mac(mac, priv->staging_rxon.bssid_addr));
308
309 iwl4965_set_rxon_hwcrypto(priv, !priv->hw_params.sw_crypto);
310 /* Apply the new configuration */
311 rc = iwl_send_cmd_pdu(priv, REPLY_RXON,
312 sizeof(struct iwl_rxon_cmd), &priv->staging_rxon);
313 if (rc) {
314 IWL_ERROR("Error setting new configuration (%d).\n", rc);
315 return rc;
316 }
317
318 iwl_remove_station(priv, iwl_bcast_addr, 0);
319 iwlcore_clear_stations_table(priv);
320
321 if (!priv->error_recovering)
322 priv->start_calib = 0;
323
324 iwl_init_sensitivity(priv);
325
326 memcpy(active_rxon, &priv->staging_rxon, sizeof(*active_rxon));
327
328 /* If we issue a new RXON command which required a tune then we must
329 * send a new TXPOWER command or we won't be able to Tx any frames */
330 rc = iwl_set_tx_power(priv, priv->tx_power_user_lmt, true);
331 if (rc) {
332 IWL_ERROR("Error sending TX power (%d).\n", rc);
333 return rc;
334 }
335
336 /* Add the broadcast address so we can send broadcast frames */
337 if (iwl_rxon_add_station(priv, iwl_bcast_addr, 0) ==
338 IWL_INVALID_STATION) {
339 IWL_ERROR("Error adding BROADCAST address for transmit.\n");
340 return -EIO;
341 }
342
343 /* If we have set the ASSOC_MSK and we are in BSS mode then
344 * add the IWL_AP_ID to the station rate table */
345 if (iwl_is_associated(priv) &&
346 (priv->iw_mode == IEEE80211_IF_TYPE_STA)) {
347 if (iwl_rxon_add_station(priv, priv->active_rxon.bssid_addr, 1)
348 == IWL_INVALID_STATION) {
349 IWL_ERROR("Error adding AP address for transmit.\n");
350 return -EIO;
351 }
352 priv->assoc_station_added = 1;
353 if (priv->default_wep_key &&
354 iwl_send_static_wepkey_cmd(priv, 0))
355 IWL_ERROR("Could not send WEP static key.\n");
356 }
357
358 return 0;
359 }
360
361 void iwl4965_update_chain_flags(struct iwl_priv *priv)
362 {
363
364 iwl_set_rxon_chain(priv);
365 iwl4965_commit_rxon(priv);
366 }
367
368 static int iwl4965_send_bt_config(struct iwl_priv *priv)
369 {
370 struct iwl4965_bt_cmd bt_cmd = {
371 .flags = 3,
372 .lead_time = 0xAA,
373 .max_kill = 1,
374 .kill_ack_mask = 0,
375 .kill_cts_mask = 0,
376 };
377
378 return iwl_send_cmd_pdu(priv, REPLY_BT_CONFIG,
379 sizeof(struct iwl4965_bt_cmd), &bt_cmd);
380 }
381
382 /*
383 * CARD_STATE_CMD
384 *
385 * Use: Sets the device's internal card state to enable, disable, or halt
386 *
387 * When in the 'enable' state the card operates as normal.
388 * When in the 'disable' state, the card enters into a low power mode.
389 * When in the 'halt' state, the card is shut down and must be fully
390 * restarted to come back on.
391 */
392 static int iwl4965_send_card_state(struct iwl_priv *priv, u32 flags, u8 meta_flag)
393 {
394 struct iwl_host_cmd cmd = {
395 .id = REPLY_CARD_STATE_CMD,
396 .len = sizeof(u32),
397 .data = &flags,
398 .meta.flags = meta_flag,
399 };
400
401 return iwl_send_cmd(priv, &cmd);
402 }
403
404 static void iwl_clear_free_frames(struct iwl_priv *priv)
405 {
406 struct list_head *element;
407
408 IWL_DEBUG_INFO("%d frames on pre-allocated heap on clear.\n",
409 priv->frames_count);
410
411 while (!list_empty(&priv->free_frames)) {
412 element = priv->free_frames.next;
413 list_del(element);
414 kfree(list_entry(element, struct iwl_frame, list));
415 priv->frames_count--;
416 }
417
418 if (priv->frames_count) {
419 IWL_WARNING("%d frames still in use. Did we lose one?\n",
420 priv->frames_count);
421 priv->frames_count = 0;
422 }
423 }
424
425 static struct iwl_frame *iwl_get_free_frame(struct iwl_priv *priv)
426 {
427 struct iwl_frame *frame;
428 struct list_head *element;
429 if (list_empty(&priv->free_frames)) {
430 frame = kzalloc(sizeof(*frame), GFP_KERNEL);
431 if (!frame) {
432 IWL_ERROR("Could not allocate frame!\n");
433 return NULL;
434 }
435
436 priv->frames_count++;
437 return frame;
438 }
439
440 element = priv->free_frames.next;
441 list_del(element);
442 return list_entry(element, struct iwl_frame, list);
443 }
444
445 static void iwl_free_frame(struct iwl_priv *priv, struct iwl_frame *frame)
446 {
447 memset(frame, 0, sizeof(*frame));
448 list_add(&frame->list, &priv->free_frames);
449 }
450
451 unsigned int iwl4965_fill_beacon_frame(struct iwl_priv *priv,
452 struct ieee80211_hdr *hdr,
453 const u8 *dest, int left)
454 {
455
456 if (!iwl_is_associated(priv) || !priv->ibss_beacon ||
457 ((priv->iw_mode != IEEE80211_IF_TYPE_IBSS) &&
458 (priv->iw_mode != IEEE80211_IF_TYPE_AP)))
459 return 0;
460
461 if (priv->ibss_beacon->len > left)
462 return 0;
463
464 memcpy(hdr, priv->ibss_beacon->data, priv->ibss_beacon->len);
465
466 return priv->ibss_beacon->len;
467 }
468
469 static u8 iwl4965_rate_get_lowest_plcp(struct iwl_priv *priv)
470 {
471 int i;
472 int rate_mask;
473
474 /* Set rate mask*/
475 if (priv->staging_rxon.flags & RXON_FLG_BAND_24G_MSK)
476 rate_mask = priv->active_rate_basic & 0xF;
477 else
478 rate_mask = priv->active_rate_basic & 0xFF0;
479
480 /* Find lowest valid rate */
481 for (i = IWL_RATE_1M_INDEX; i != IWL_RATE_INVALID;
482 i = iwl_rates[i].next_ieee) {
483 if (rate_mask & (1 << i))
484 return iwl_rates[i].plcp;
485 }
486
487 /* No valid rate was found. Assign the lowest one */
488 if (priv->staging_rxon.flags & RXON_FLG_BAND_24G_MSK)
489 return IWL_RATE_1M_PLCP;
490 else
491 return IWL_RATE_6M_PLCP;
492 }
493
494 static int iwl4965_send_beacon_cmd(struct iwl_priv *priv)
495 {
496 struct iwl_frame *frame;
497 unsigned int frame_size;
498 int rc;
499 u8 rate;
500
501 frame = iwl_get_free_frame(priv);
502
503 if (!frame) {
504 IWL_ERROR("Could not obtain free frame buffer for beacon "
505 "command.\n");
506 return -ENOMEM;
507 }
508
509 rate = iwl4965_rate_get_lowest_plcp(priv);
510
511 frame_size = iwl4965_hw_get_beacon_cmd(priv, frame, rate);
512
513 rc = iwl_send_cmd_pdu(priv, REPLY_TX_BEACON, frame_size,
514 &frame->u.cmd[0]);
515
516 iwl_free_frame(priv, frame);
517
518 return rc;
519 }
520
521 /******************************************************************************
522 *
523 * Misc. internal state and helper functions
524 *
525 ******************************************************************************/
526
527 static void iwl4965_ht_conf(struct iwl_priv *priv,
528 struct ieee80211_bss_conf *bss_conf)
529 {
530 struct ieee80211_ht_info *ht_conf = bss_conf->ht_conf;
531 struct ieee80211_ht_bss_info *ht_bss_conf = bss_conf->ht_bss_conf;
532 struct iwl_ht_info *iwl_conf = &priv->current_ht_config;
533
534 IWL_DEBUG_MAC80211("enter: \n");
535
536 iwl_conf->is_ht = bss_conf->assoc_ht;
537
538 if (!iwl_conf->is_ht)
539 return;
540
541 priv->ps_mode = (u8)((ht_conf->cap & IEEE80211_HT_CAP_MIMO_PS) >> 2);
542
543 if (ht_conf->cap & IEEE80211_HT_CAP_SGI_20)
544 iwl_conf->sgf |= HT_SHORT_GI_20MHZ;
545 if (ht_conf->cap & IEEE80211_HT_CAP_SGI_40)
546 iwl_conf->sgf |= HT_SHORT_GI_40MHZ;
547
548 iwl_conf->is_green_field = !!(ht_conf->cap & IEEE80211_HT_CAP_GRN_FLD);
549 iwl_conf->max_amsdu_size =
550 !!(ht_conf->cap & IEEE80211_HT_CAP_MAX_AMSDU);
551
552 iwl_conf->supported_chan_width =
553 !!(ht_conf->cap & IEEE80211_HT_CAP_SUP_WIDTH);
554 iwl_conf->extension_chan_offset =
555 ht_bss_conf->bss_cap & IEEE80211_HT_IE_CHA_SEC_OFFSET;
556 /* If no above or below channel supplied disable FAT channel */
557 if (iwl_conf->extension_chan_offset != IEEE80211_HT_IE_CHA_SEC_ABOVE &&
558 iwl_conf->extension_chan_offset != IEEE80211_HT_IE_CHA_SEC_BELOW) {
559 iwl_conf->extension_chan_offset = IEEE80211_HT_IE_CHA_SEC_NONE;
560 iwl_conf->supported_chan_width = 0;
561 }
562
563 iwl_conf->tx_mimo_ps_mode =
564 (u8)((ht_conf->cap & IEEE80211_HT_CAP_MIMO_PS) >> 2);
565 memcpy(iwl_conf->supp_mcs_set, ht_conf->supp_mcs_set, 16);
566
567 iwl_conf->control_channel = ht_bss_conf->primary_channel;
568 iwl_conf->tx_chan_width =
569 !!(ht_bss_conf->bss_cap & IEEE80211_HT_IE_CHA_WIDTH);
570 iwl_conf->ht_protection =
571 ht_bss_conf->bss_op_mode & IEEE80211_HT_IE_HT_PROTECTION;
572 iwl_conf->non_GF_STA_present =
573 !!(ht_bss_conf->bss_op_mode & IEEE80211_HT_IE_NON_GF_STA_PRSNT);
574
575 IWL_DEBUG_MAC80211("control channel %d\n", iwl_conf->control_channel);
576 IWL_DEBUG_MAC80211("leave\n");
577 }
578
579 /*
580 * QoS support
581 */
582 static int iwl4965_send_qos_params_command(struct iwl_priv *priv,
583 struct iwl4965_qosparam_cmd *qos)
584 {
585
586 return iwl_send_cmd_pdu(priv, REPLY_QOS_PARAM,
587 sizeof(struct iwl4965_qosparam_cmd), qos);
588 }
589
590 static void iwl4965_activate_qos(struct iwl_priv *priv, u8 force)
591 {
592 unsigned long flags;
593
594 if (test_bit(STATUS_EXIT_PENDING, &priv->status))
595 return;
596
597 if (!priv->qos_data.qos_enable)
598 return;
599
600 spin_lock_irqsave(&priv->lock, flags);
601 priv->qos_data.def_qos_parm.qos_flags = 0;
602
603 if (priv->qos_data.qos_cap.q_AP.queue_request &&
604 !priv->qos_data.qos_cap.q_AP.txop_request)
605 priv->qos_data.def_qos_parm.qos_flags |=
606 QOS_PARAM_FLG_TXOP_TYPE_MSK;
607 if (priv->qos_data.qos_active)
608 priv->qos_data.def_qos_parm.qos_flags |=
609 QOS_PARAM_FLG_UPDATE_EDCA_MSK;
610
611 if (priv->current_ht_config.is_ht)
612 priv->qos_data.def_qos_parm.qos_flags |= QOS_PARAM_FLG_TGN_MSK;
613
614 spin_unlock_irqrestore(&priv->lock, flags);
615
616 if (force || iwl_is_associated(priv)) {
617 IWL_DEBUG_QOS("send QoS cmd with Qos active=%d FLAGS=0x%X\n",
618 priv->qos_data.qos_active,
619 priv->qos_data.def_qos_parm.qos_flags);
620
621 iwl4965_send_qos_params_command(priv,
622 &(priv->qos_data.def_qos_parm));
623 }
624 }
625
626 int iwl4965_is_network_packet(struct iwl_priv *priv, struct ieee80211_hdr *header)
627 {
628 /* Filter incoming packets to determine if they are targeted toward
629 * this network, discarding packets coming from ourselves */
630 switch (priv->iw_mode) {
631 case IEEE80211_IF_TYPE_IBSS: /* Header: Dest. | Source | BSSID */
632 /* packets from our adapter are dropped (echo) */
633 if (!compare_ether_addr(header->addr2, priv->mac_addr))
634 return 0;
635 /* {broad,multi}cast packets to our IBSS go through */
636 if (is_multicast_ether_addr(header->addr1))
637 return !compare_ether_addr(header->addr3, priv->bssid);
638 /* packets to our adapter go through */
639 return !compare_ether_addr(header->addr1, priv->mac_addr);
640 case IEEE80211_IF_TYPE_STA: /* Header: Dest. | AP{BSSID} | Source */
641 /* packets from our adapter are dropped (echo) */
642 if (!compare_ether_addr(header->addr3, priv->mac_addr))
643 return 0;
644 /* {broad,multi}cast packets to our BSS go through */
645 if (is_multicast_ether_addr(header->addr1))
646 return !compare_ether_addr(header->addr2, priv->bssid);
647 /* packets to our adapter go through */
648 return !compare_ether_addr(header->addr1, priv->mac_addr);
649 default:
650 break;
651 }
652
653 return 1;
654 }
655
656 static void iwl4965_sequence_reset(struct iwl_priv *priv)
657 {
658 /* Reset ieee stats */
659
660 /* We don't reset the net_device_stats (ieee->stats) on
661 * re-association */
662
663 priv->last_seq_num = -1;
664 priv->last_frag_num = -1;
665 priv->last_packet_time = 0;
666
667 iwl_scan_cancel(priv);
668 }
669
670 #define MAX_UCODE_BEACON_INTERVAL 4096
671 #define INTEL_CONN_LISTEN_INTERVAL __constant_cpu_to_le16(0xA)
672
673 static __le16 iwl4965_adjust_beacon_interval(u16 beacon_val)
674 {
675 u16 new_val = 0;
676 u16 beacon_factor = 0;
677
678 beacon_factor =
679 (beacon_val + MAX_UCODE_BEACON_INTERVAL)
680 / MAX_UCODE_BEACON_INTERVAL;
681 new_val = beacon_val / beacon_factor;
682
683 return cpu_to_le16(new_val);
684 }
685
686 static void iwl4965_setup_rxon_timing(struct iwl_priv *priv)
687 {
688 u64 interval_tm_unit;
689 u64 tsf, result;
690 unsigned long flags;
691 struct ieee80211_conf *conf = NULL;
692 u16 beacon_int = 0;
693
694 conf = ieee80211_get_hw_conf(priv->hw);
695
696 spin_lock_irqsave(&priv->lock, flags);
697 priv->rxon_timing.timestamp.dw[1] = cpu_to_le32(priv->timestamp >> 32);
698 priv->rxon_timing.timestamp.dw[0] =
699 cpu_to_le32(priv->timestamp & 0xFFFFFFFF);
700
701 priv->rxon_timing.listen_interval = INTEL_CONN_LISTEN_INTERVAL;
702
703 tsf = priv->timestamp;
704
705 beacon_int = priv->beacon_int;
706 spin_unlock_irqrestore(&priv->lock, flags);
707
708 if (priv->iw_mode == IEEE80211_IF_TYPE_STA) {
709 if (beacon_int == 0) {
710 priv->rxon_timing.beacon_interval = cpu_to_le16(100);
711 priv->rxon_timing.beacon_init_val = cpu_to_le32(102400);
712 } else {
713 priv->rxon_timing.beacon_interval =
714 cpu_to_le16(beacon_int);
715 priv->rxon_timing.beacon_interval =
716 iwl4965_adjust_beacon_interval(
717 le16_to_cpu(priv->rxon_timing.beacon_interval));
718 }
719
720 priv->rxon_timing.atim_window = 0;
721 } else {
722 priv->rxon_timing.beacon_interval =
723 iwl4965_adjust_beacon_interval(conf->beacon_int);
724 /* TODO: we need to get atim_window from upper stack
725 * for now we set to 0 */
726 priv->rxon_timing.atim_window = 0;
727 }
728
729 interval_tm_unit =
730 (le16_to_cpu(priv->rxon_timing.beacon_interval) * 1024);
731 result = do_div(tsf, interval_tm_unit);
732 priv->rxon_timing.beacon_init_val =
733 cpu_to_le32((u32) ((u64) interval_tm_unit - result));
734
735 IWL_DEBUG_ASSOC
736 ("beacon interval %d beacon timer %d beacon tim %d\n",
737 le16_to_cpu(priv->rxon_timing.beacon_interval),
738 le32_to_cpu(priv->rxon_timing.beacon_init_val),
739 le16_to_cpu(priv->rxon_timing.atim_window));
740 }
741
742 static void iwl_set_flags_for_band(struct iwl_priv *priv,
743 enum ieee80211_band band)
744 {
745 if (band == IEEE80211_BAND_5GHZ) {
746 priv->staging_rxon.flags &=
747 ~(RXON_FLG_BAND_24G_MSK | RXON_FLG_AUTO_DETECT_MSK
748 | RXON_FLG_CCK_MSK);
749 priv->staging_rxon.flags |= RXON_FLG_SHORT_SLOT_MSK;
750 } else {
751 /* Copied from iwl4965_post_associate() */
752 if (priv->assoc_capability & WLAN_CAPABILITY_SHORT_SLOT_TIME)
753 priv->staging_rxon.flags |= RXON_FLG_SHORT_SLOT_MSK;
754 else
755 priv->staging_rxon.flags &= ~RXON_FLG_SHORT_SLOT_MSK;
756
757 if (priv->iw_mode == IEEE80211_IF_TYPE_IBSS)
758 priv->staging_rxon.flags &= ~RXON_FLG_SHORT_SLOT_MSK;
759
760 priv->staging_rxon.flags |= RXON_FLG_BAND_24G_MSK;
761 priv->staging_rxon.flags |= RXON_FLG_AUTO_DETECT_MSK;
762 priv->staging_rxon.flags &= ~RXON_FLG_CCK_MSK;
763 }
764 }
765
766 /*
767 * initialize rxon structure with default values from eeprom
768 */
769 static void iwl4965_connection_init_rx_config(struct iwl_priv *priv)
770 {
771 const struct iwl_channel_info *ch_info;
772
773 memset(&priv->staging_rxon, 0, sizeof(priv->staging_rxon));
774
775 switch (priv->iw_mode) {
776 case IEEE80211_IF_TYPE_AP:
777 priv->staging_rxon.dev_type = RXON_DEV_TYPE_AP;
778 break;
779
780 case IEEE80211_IF_TYPE_STA:
781 priv->staging_rxon.dev_type = RXON_DEV_TYPE_ESS;
782 priv->staging_rxon.filter_flags = RXON_FILTER_ACCEPT_GRP_MSK;
783 break;
784
785 case IEEE80211_IF_TYPE_IBSS:
786 priv->staging_rxon.dev_type = RXON_DEV_TYPE_IBSS;
787 priv->staging_rxon.flags = RXON_FLG_SHORT_PREAMBLE_MSK;
788 priv->staging_rxon.filter_flags = RXON_FILTER_BCON_AWARE_MSK |
789 RXON_FILTER_ACCEPT_GRP_MSK;
790 break;
791
792 case IEEE80211_IF_TYPE_MNTR:
793 priv->staging_rxon.dev_type = RXON_DEV_TYPE_SNIFFER;
794 priv->staging_rxon.filter_flags = RXON_FILTER_PROMISC_MSK |
795 RXON_FILTER_CTL2HOST_MSK | RXON_FILTER_ACCEPT_GRP_MSK;
796 break;
797 default:
798 IWL_ERROR("Unsupported interface type %d\n", priv->iw_mode);
799 break;
800 }
801
802 #if 0
803 /* TODO: Figure out when short_preamble would be set and cache from
804 * that */
805 if (!hw_to_local(priv->hw)->short_preamble)
806 priv->staging_rxon.flags &= ~RXON_FLG_SHORT_PREAMBLE_MSK;
807 else
808 priv->staging_rxon.flags |= RXON_FLG_SHORT_PREAMBLE_MSK;
809 #endif
810
811 ch_info = iwl_get_channel_info(priv, priv->band,
812 le16_to_cpu(priv->staging_rxon.channel));
813
814 if (!ch_info)
815 ch_info = &priv->channel_info[0];
816
817 /*
818 * in some case A channels are all non IBSS
819 * in this case force B/G channel
820 */
821 if ((priv->iw_mode == IEEE80211_IF_TYPE_IBSS) &&
822 !(is_channel_ibss(ch_info)))
823 ch_info = &priv->channel_info[0];
824
825 priv->staging_rxon.channel = cpu_to_le16(ch_info->channel);
826 priv->band = ch_info->band;
827
828 iwl_set_flags_for_band(priv, priv->band);
829
830 priv->staging_rxon.ofdm_basic_rates =
831 (IWL_OFDM_RATES_MASK >> IWL_FIRST_OFDM_RATE) & 0xFF;
832 priv->staging_rxon.cck_basic_rates =
833 (IWL_CCK_RATES_MASK >> IWL_FIRST_CCK_RATE) & 0xF;
834
835 priv->staging_rxon.flags &= ~(RXON_FLG_CHANNEL_MODE_MIXED_MSK |
836 RXON_FLG_CHANNEL_MODE_PURE_40_MSK);
837 memcpy(priv->staging_rxon.node_addr, priv->mac_addr, ETH_ALEN);
838 memcpy(priv->staging_rxon.wlap_bssid_addr, priv->mac_addr, ETH_ALEN);
839 priv->staging_rxon.ofdm_ht_single_stream_basic_rates = 0xff;
840 priv->staging_rxon.ofdm_ht_dual_stream_basic_rates = 0xff;
841 iwl_set_rxon_chain(priv);
842 }
843
844 static int iwl4965_set_mode(struct iwl_priv *priv, int mode)
845 {
846 priv->iw_mode = mode;
847
848 /* init channel/phymode to values given at driver init */
849 iwl_set_rxon_channel(priv, IEEE80211_BAND_2GHZ, 6);
850
851 iwl4965_connection_init_rx_config(priv);
852 memcpy(priv->staging_rxon.node_addr, priv->mac_addr, ETH_ALEN);
853
854 iwlcore_clear_stations_table(priv);
855
856 /* dont commit rxon if rf-kill is on*/
857 if (!iwl_is_ready_rf(priv))
858 return -EAGAIN;
859
860 cancel_delayed_work(&priv->scan_check);
861 if (iwl_scan_cancel_timeout(priv, 100)) {
862 IWL_WARNING("Aborted scan still in progress after 100ms\n");
863 IWL_DEBUG_MAC80211("leaving - scan abort failed.\n");
864 return -EAGAIN;
865 }
866
867 iwl4965_commit_rxon(priv);
868
869 return 0;
870 }
871
872 static void iwl4965_set_rate(struct iwl_priv *priv)
873 {
874 const struct ieee80211_supported_band *hw = NULL;
875 struct ieee80211_rate *rate;
876 int i;
877
878 hw = iwl_get_hw_mode(priv, priv->band);
879 if (!hw) {
880 IWL_ERROR("Failed to set rate: unable to get hw mode\n");
881 return;
882 }
883
884 priv->active_rate = 0;
885 priv->active_rate_basic = 0;
886
887 for (i = 0; i < hw->n_bitrates; i++) {
888 rate = &(hw->bitrates[i]);
889 if (rate->hw_value < IWL_RATE_COUNT)
890 priv->active_rate |= (1 << rate->hw_value);
891 }
892
893 IWL_DEBUG_RATE("Set active_rate = %0x, active_rate_basic = %0x\n",
894 priv->active_rate, priv->active_rate_basic);
895
896 /*
897 * If a basic rate is configured, then use it (adding IWL_RATE_1M_MASK)
898 * otherwise set it to the default of all CCK rates and 6, 12, 24 for
899 * OFDM
900 */
901 if (priv->active_rate_basic & IWL_CCK_BASIC_RATES_MASK)
902 priv->staging_rxon.cck_basic_rates =
903 ((priv->active_rate_basic &
904 IWL_CCK_RATES_MASK) >> IWL_FIRST_CCK_RATE) & 0xF;
905 else
906 priv->staging_rxon.cck_basic_rates =
907 (IWL_CCK_BASIC_RATES_MASK >> IWL_FIRST_CCK_RATE) & 0xF;
908
909 if (priv->active_rate_basic & IWL_OFDM_BASIC_RATES_MASK)
910 priv->staging_rxon.ofdm_basic_rates =
911 ((priv->active_rate_basic &
912 (IWL_OFDM_BASIC_RATES_MASK | IWL_RATE_6M_MASK)) >>
913 IWL_FIRST_OFDM_RATE) & 0xFF;
914 else
915 priv->staging_rxon.ofdm_basic_rates =
916 (IWL_OFDM_BASIC_RATES_MASK >> IWL_FIRST_OFDM_RATE) & 0xFF;
917 }
918
919 int iwl4965_radio_kill_sw(struct iwl_priv *priv, int disable_radio)
920 {
921 unsigned long flags;
922
923 if (!!disable_radio == test_bit(STATUS_RF_KILL_SW, &priv->status))
924 return 0;
925
926 IWL_DEBUG_RF_KILL("Manual SW RF KILL set to: RADIO %s\n",
927 disable_radio ? "OFF" : "ON");
928
929 if (disable_radio) {
930 iwl_scan_cancel(priv);
931 /* FIXME: This is a workaround for AP */
932 if (priv->iw_mode != IEEE80211_IF_TYPE_AP) {
933 spin_lock_irqsave(&priv->lock, flags);
934 iwl_write32(priv, CSR_UCODE_DRV_GP1_SET,
935 CSR_UCODE_SW_BIT_RFKILL);
936 spin_unlock_irqrestore(&priv->lock, flags);
937 /* call the host command only if no hw rf-kill set */
938 if (!test_bit(STATUS_RF_KILL_HW, &priv->status) &&
939 iwl_is_ready(priv))
940 iwl4965_send_card_state(priv,
941 CARD_STATE_CMD_DISABLE,
942 0);
943 set_bit(STATUS_RF_KILL_SW, &priv->status);
944
945 /* make sure mac80211 stop sending Tx frame */
946 if (priv->mac80211_registered)
947 ieee80211_stop_queues(priv->hw);
948 }
949 return 0;
950 }
951
952 spin_lock_irqsave(&priv->lock, flags);
953 iwl_write32(priv, CSR_UCODE_DRV_GP1_CLR, CSR_UCODE_SW_BIT_RFKILL);
954
955 clear_bit(STATUS_RF_KILL_SW, &priv->status);
956 spin_unlock_irqrestore(&priv->lock, flags);
957
958 /* wake up ucode */
959 msleep(10);
960
961 spin_lock_irqsave(&priv->lock, flags);
962 iwl_read32(priv, CSR_UCODE_DRV_GP1);
963 if (!iwl_grab_nic_access(priv))
964 iwl_release_nic_access(priv);
965 spin_unlock_irqrestore(&priv->lock, flags);
966
967 if (test_bit(STATUS_RF_KILL_HW, &priv->status)) {
968 IWL_DEBUG_RF_KILL("Can not turn radio back on - "
969 "disabled by HW switch\n");
970 return 0;
971 }
972
973 queue_work(priv->workqueue, &priv->restart);
974 return 1;
975 }
976
977 #define IWL_PACKET_RETRY_TIME HZ
978
979 int iwl4965_is_duplicate_packet(struct iwl_priv *priv, struct ieee80211_hdr *header)
980 {
981 u16 sc = le16_to_cpu(header->seq_ctrl);
982 u16 seq = (sc & IEEE80211_SCTL_SEQ) >> 4;
983 u16 frag = sc & IEEE80211_SCTL_FRAG;
984 u16 *last_seq, *last_frag;
985 unsigned long *last_time;
986
987 switch (priv->iw_mode) {
988 case IEEE80211_IF_TYPE_IBSS:{
989 struct list_head *p;
990 struct iwl4965_ibss_seq *entry = NULL;
991 u8 *mac = header->addr2;
992 int index = mac[5] & (IWL_IBSS_MAC_HASH_SIZE - 1);
993
994 __list_for_each(p, &priv->ibss_mac_hash[index]) {
995 entry = list_entry(p, struct iwl4965_ibss_seq, list);
996 if (!compare_ether_addr(entry->mac, mac))
997 break;
998 }
999 if (p == &priv->ibss_mac_hash[index]) {
1000 entry = kzalloc(sizeof(*entry), GFP_ATOMIC);
1001 if (!entry) {
1002 IWL_ERROR("Cannot malloc new mac entry\n");
1003 return 0;
1004 }
1005 memcpy(entry->mac, mac, ETH_ALEN);
1006 entry->seq_num = seq;
1007 entry->frag_num = frag;
1008 entry->packet_time = jiffies;
1009 list_add(&entry->list, &priv->ibss_mac_hash[index]);
1010 return 0;
1011 }
1012 last_seq = &entry->seq_num;
1013 last_frag = &entry->frag_num;
1014 last_time = &entry->packet_time;
1015 break;
1016 }
1017 case IEEE80211_IF_TYPE_STA:
1018 last_seq = &priv->last_seq_num;
1019 last_frag = &priv->last_frag_num;
1020 last_time = &priv->last_packet_time;
1021 break;
1022 default:
1023 return 0;
1024 }
1025 if ((*last_seq == seq) &&
1026 time_after(*last_time + IWL_PACKET_RETRY_TIME, jiffies)) {
1027 if (*last_frag == frag)
1028 goto drop;
1029 if (*last_frag + 1 != frag)
1030 /* out-of-order fragment */
1031 goto drop;
1032 } else
1033 *last_seq = seq;
1034
1035 *last_frag = frag;
1036 *last_time = jiffies;
1037 return 0;
1038
1039 drop:
1040 return 1;
1041 }
1042
1043 #ifdef CONFIG_IWL4965_SPECTRUM_MEASUREMENT
1044
1045 #include "iwl-spectrum.h"
1046
1047 #define BEACON_TIME_MASK_LOW 0x00FFFFFF
1048 #define BEACON_TIME_MASK_HIGH 0xFF000000
1049 #define TIME_UNIT 1024
1050
1051 /*
1052 * extended beacon time format
1053 * time in usec will be changed into a 32-bit value in 8:24 format
1054 * the high 1 byte is the beacon counts
1055 * the lower 3 bytes is the time in usec within one beacon interval
1056 */
1057
1058 static u32 iwl4965_usecs_to_beacons(u32 usec, u32 beacon_interval)
1059 {
1060 u32 quot;
1061 u32 rem;
1062 u32 interval = beacon_interval * 1024;
1063
1064 if (!interval || !usec)
1065 return 0;
1066
1067 quot = (usec / interval) & (BEACON_TIME_MASK_HIGH >> 24);
1068 rem = (usec % interval) & BEACON_TIME_MASK_LOW;
1069
1070 return (quot << 24) + rem;
1071 }
1072
1073 /* base is usually what we get from ucode with each received frame,
1074 * the same as HW timer counter counting down
1075 */
1076
1077 static __le32 iwl4965_add_beacon_time(u32 base, u32 addon, u32 beacon_interval)
1078 {
1079 u32 base_low = base & BEACON_TIME_MASK_LOW;
1080 u32 addon_low = addon & BEACON_TIME_MASK_LOW;
1081 u32 interval = beacon_interval * TIME_UNIT;
1082 u32 res = (base & BEACON_TIME_MASK_HIGH) +
1083 (addon & BEACON_TIME_MASK_HIGH);
1084
1085 if (base_low > addon_low)
1086 res += base_low - addon_low;
1087 else if (base_low < addon_low) {
1088 res += interval + base_low - addon_low;
1089 res += (1 << 24);
1090 } else
1091 res += (1 << 24);
1092
1093 return cpu_to_le32(res);
1094 }
1095
1096 static int iwl4965_get_measurement(struct iwl_priv *priv,
1097 struct ieee80211_measurement_params *params,
1098 u8 type)
1099 {
1100 struct iwl4965_spectrum_cmd spectrum;
1101 struct iwl_rx_packet *res;
1102 struct iwl_host_cmd cmd = {
1103 .id = REPLY_SPECTRUM_MEASUREMENT_CMD,
1104 .data = (void *)&spectrum,
1105 .meta.flags = CMD_WANT_SKB,
1106 };
1107 u32 add_time = le64_to_cpu(params->start_time);
1108 int rc;
1109 int spectrum_resp_status;
1110 int duration = le16_to_cpu(params->duration);
1111
1112 if (iwl_is_associated(priv))
1113 add_time =
1114 iwl4965_usecs_to_beacons(
1115 le64_to_cpu(params->start_time) - priv->last_tsf,
1116 le16_to_cpu(priv->rxon_timing.beacon_interval));
1117
1118 memset(&spectrum, 0, sizeof(spectrum));
1119
1120 spectrum.channel_count = cpu_to_le16(1);
1121 spectrum.flags =
1122 RXON_FLG_TSF2HOST_MSK | RXON_FLG_ANT_A_MSK | RXON_FLG_DIS_DIV_MSK;
1123 spectrum.filter_flags = MEASUREMENT_FILTER_FLAG;
1124 cmd.len = sizeof(spectrum);
1125 spectrum.len = cpu_to_le16(cmd.len - sizeof(spectrum.len));
1126
1127 if (iwl_is_associated(priv))
1128 spectrum.start_time =
1129 iwl4965_add_beacon_time(priv->last_beacon_time,
1130 add_time,
1131 le16_to_cpu(priv->rxon_timing.beacon_interval));
1132 else
1133 spectrum.start_time = 0;
1134
1135 spectrum.channels[0].duration = cpu_to_le32(duration * TIME_UNIT);
1136 spectrum.channels[0].channel = params->channel;
1137 spectrum.channels[0].type = type;
1138 if (priv->active_rxon.flags & RXON_FLG_BAND_24G_MSK)
1139 spectrum.flags |= RXON_FLG_BAND_24G_MSK |
1140 RXON_FLG_AUTO_DETECT_MSK | RXON_FLG_TGG_PROTECT_MSK;
1141
1142 rc = iwl_send_cmd_sync(priv, &cmd);
1143 if (rc)
1144 return rc;
1145
1146 res = (struct iwl_rx_packet *)cmd.meta.u.skb->data;
1147 if (res->hdr.flags & IWL_CMD_FAILED_MSK) {
1148 IWL_ERROR("Bad return from REPLY_RX_ON_ASSOC command\n");
1149 rc = -EIO;
1150 }
1151
1152 spectrum_resp_status = le16_to_cpu(res->u.spectrum.status);
1153 switch (spectrum_resp_status) {
1154 case 0: /* Command will be handled */
1155 if (res->u.spectrum.id != 0xff) {
1156 IWL_DEBUG_INFO
1157 ("Replaced existing measurement: %d\n",
1158 res->u.spectrum.id);
1159 priv->measurement_status &= ~MEASUREMENT_READY;
1160 }
1161 priv->measurement_status |= MEASUREMENT_ACTIVE;
1162 rc = 0;
1163 break;
1164
1165 case 1: /* Command will not be handled */
1166 rc = -EAGAIN;
1167 break;
1168 }
1169
1170 dev_kfree_skb_any(cmd.meta.u.skb);
1171
1172 return rc;
1173 }
1174 #endif
1175
1176 /******************************************************************************
1177 *
1178 * Generic RX handler implementations
1179 *
1180 ******************************************************************************/
1181 static void iwl_rx_reply_alive(struct iwl_priv *priv,
1182 struct iwl_rx_mem_buffer *rxb)
1183 {
1184 struct iwl_rx_packet *pkt = (struct iwl_rx_packet *)rxb->skb->data;
1185 struct iwl_alive_resp *palive;
1186 struct delayed_work *pwork;
1187
1188 palive = &pkt->u.alive_frame;
1189
1190 IWL_DEBUG_INFO("Alive ucode status 0x%08X revision "
1191 "0x%01X 0x%01X\n",
1192 palive->is_valid, palive->ver_type,
1193 palive->ver_subtype);
1194
1195 if (palive->ver_subtype == INITIALIZE_SUBTYPE) {
1196 IWL_DEBUG_INFO("Initialization Alive received.\n");
1197 memcpy(&priv->card_alive_init,
1198 &pkt->u.alive_frame,
1199 sizeof(struct iwl_init_alive_resp));
1200 pwork = &priv->init_alive_start;
1201 } else {
1202 IWL_DEBUG_INFO("Runtime Alive received.\n");
1203 memcpy(&priv->card_alive, &pkt->u.alive_frame,
1204 sizeof(struct iwl_alive_resp));
1205 pwork = &priv->alive_start;
1206 }
1207
1208 /* We delay the ALIVE response by 5ms to
1209 * give the HW RF Kill time to activate... */
1210 if (palive->is_valid == UCODE_VALID_OK)
1211 queue_delayed_work(priv->workqueue, pwork,
1212 msecs_to_jiffies(5));
1213 else
1214 IWL_WARNING("uCode did not respond OK.\n");
1215 }
1216
1217 static void iwl4965_rx_reply_error(struct iwl_priv *priv,
1218 struct iwl_rx_mem_buffer *rxb)
1219 {
1220 struct iwl_rx_packet *pkt = (struct iwl_rx_packet *)rxb->skb->data;
1221
1222 IWL_ERROR("Error Reply type 0x%08X cmd %s (0x%02X) "
1223 "seq 0x%04X ser 0x%08X\n",
1224 le32_to_cpu(pkt->u.err_resp.error_type),
1225 get_cmd_string(pkt->u.err_resp.cmd_id),
1226 pkt->u.err_resp.cmd_id,
1227 le16_to_cpu(pkt->u.err_resp.bad_cmd_seq_num),
1228 le32_to_cpu(pkt->u.err_resp.error_info));
1229 }
1230
1231 #define TX_STATUS_ENTRY(x) case TX_STATUS_FAIL_ ## x: return #x
1232
1233 static void iwl4965_rx_csa(struct iwl_priv *priv, struct iwl_rx_mem_buffer *rxb)
1234 {
1235 struct iwl_rx_packet *pkt = (struct iwl_rx_packet *)rxb->skb->data;
1236 struct iwl_rxon_cmd *rxon = (void *)&priv->active_rxon;
1237 struct iwl4965_csa_notification *csa = &(pkt->u.csa_notif);
1238 IWL_DEBUG_11H("CSA notif: channel %d, status %d\n",
1239 le16_to_cpu(csa->channel), le32_to_cpu(csa->status));
1240 rxon->channel = csa->channel;
1241 priv->staging_rxon.channel = csa->channel;
1242 }
1243
1244 static void iwl4965_rx_spectrum_measure_notif(struct iwl_priv *priv,
1245 struct iwl_rx_mem_buffer *rxb)
1246 {
1247 #ifdef CONFIG_IWL4965_SPECTRUM_MEASUREMENT
1248 struct iwl_rx_packet *pkt = (struct iwl_rx_packet *)rxb->skb->data;
1249 struct iwl4965_spectrum_notification *report = &(pkt->u.spectrum_notif);
1250
1251 if (!report->state) {
1252 IWL_DEBUG(IWL_DL_11H,
1253 "Spectrum Measure Notification: Start\n");
1254 return;
1255 }
1256
1257 memcpy(&priv->measure_report, report, sizeof(*report));
1258 priv->measurement_status |= MEASUREMENT_READY;
1259 #endif
1260 }
1261
1262 static void iwl4965_rx_pm_sleep_notif(struct iwl_priv *priv,
1263 struct iwl_rx_mem_buffer *rxb)
1264 {
1265 #ifdef CONFIG_IWLWIFI_DEBUG
1266 struct iwl_rx_packet *pkt = (struct iwl_rx_packet *)rxb->skb->data;
1267 struct iwl4965_sleep_notification *sleep = &(pkt->u.sleep_notif);
1268 IWL_DEBUG_RX("sleep mode: %d, src: %d\n",
1269 sleep->pm_sleep_mode, sleep->pm_wakeup_src);
1270 #endif
1271 }
1272
1273 static void iwl4965_rx_pm_debug_statistics_notif(struct iwl_priv *priv,
1274 struct iwl_rx_mem_buffer *rxb)
1275 {
1276 struct iwl_rx_packet *pkt = (struct iwl_rx_packet *)rxb->skb->data;
1277 IWL_DEBUG_RADIO("Dumping %d bytes of unhandled "
1278 "notification for %s:\n",
1279 le32_to_cpu(pkt->len), get_cmd_string(pkt->hdr.cmd));
1280 iwl_print_hex_dump(priv, IWL_DL_RADIO, pkt->u.raw, le32_to_cpu(pkt->len));
1281 }
1282
1283 static void iwl4965_bg_beacon_update(struct work_struct *work)
1284 {
1285 struct iwl_priv *priv =
1286 container_of(work, struct iwl_priv, beacon_update);
1287 struct sk_buff *beacon;
1288
1289 /* Pull updated AP beacon from mac80211. will fail if not in AP mode */
1290 beacon = ieee80211_beacon_get(priv->hw, priv->vif);
1291
1292 if (!beacon) {
1293 IWL_ERROR("update beacon failed\n");
1294 return;
1295 }
1296
1297 mutex_lock(&priv->mutex);
1298 /* new beacon skb is allocated every time; dispose previous.*/
1299 if (priv->ibss_beacon)
1300 dev_kfree_skb(priv->ibss_beacon);
1301
1302 priv->ibss_beacon = beacon;
1303 mutex_unlock(&priv->mutex);
1304
1305 iwl4965_send_beacon_cmd(priv);
1306 }
1307
1308 /**
1309 * iwl4965_bg_statistics_periodic - Timer callback to queue statistics
1310 *
1311 * This callback is provided in order to send a statistics request.
1312 *
1313 * This timer function is continually reset to execute within
1314 * REG_RECALIB_PERIOD seconds since the last STATISTICS_NOTIFICATION
1315 * was received. We need to ensure we receive the statistics in order
1316 * to update the temperature used for calibrating the TXPOWER.
1317 */
1318 static void iwl4965_bg_statistics_periodic(unsigned long data)
1319 {
1320 struct iwl_priv *priv = (struct iwl_priv *)data;
1321
1322 if (test_bit(STATUS_EXIT_PENDING, &priv->status))
1323 return;
1324
1325 iwl_send_statistics_request(priv, CMD_ASYNC);
1326 }
1327
1328 static void iwl4965_rx_beacon_notif(struct iwl_priv *priv,
1329 struct iwl_rx_mem_buffer *rxb)
1330 {
1331 #ifdef CONFIG_IWLWIFI_DEBUG
1332 struct iwl_rx_packet *pkt = (struct iwl_rx_packet *)rxb->skb->data;
1333 struct iwl4965_beacon_notif *beacon = &(pkt->u.beacon_status);
1334 u8 rate = iwl_hw_get_rate(beacon->beacon_notify_hdr.rate_n_flags);
1335
1336 IWL_DEBUG_RX("beacon status %x retries %d iss %d "
1337 "tsf %d %d rate %d\n",
1338 le32_to_cpu(beacon->beacon_notify_hdr.u.status) & TX_STATUS_MSK,
1339 beacon->beacon_notify_hdr.failure_frame,
1340 le32_to_cpu(beacon->ibss_mgr_status),
1341 le32_to_cpu(beacon->high_tsf),
1342 le32_to_cpu(beacon->low_tsf), rate);
1343 #endif
1344
1345 if ((priv->iw_mode == IEEE80211_IF_TYPE_AP) &&
1346 (!test_bit(STATUS_EXIT_PENDING, &priv->status)))
1347 queue_work(priv->workqueue, &priv->beacon_update);
1348 }
1349
1350 /* Handle notification from uCode that card's power state is changing
1351 * due to software, hardware, or critical temperature RFKILL */
1352 static void iwl4965_rx_card_state_notif(struct iwl_priv *priv,
1353 struct iwl_rx_mem_buffer *rxb)
1354 {
1355 struct iwl_rx_packet *pkt = (struct iwl_rx_packet *)rxb->skb->data;
1356 u32 flags = le32_to_cpu(pkt->u.card_state_notif.flags);
1357 unsigned long status = priv->status;
1358
1359 IWL_DEBUG_RF_KILL("Card state received: HW:%s SW:%s\n",
1360 (flags & HW_CARD_DISABLED) ? "Kill" : "On",
1361 (flags & SW_CARD_DISABLED) ? "Kill" : "On");
1362
1363 if (flags & (SW_CARD_DISABLED | HW_CARD_DISABLED |
1364 RF_CARD_DISABLED)) {
1365
1366 iwl_write32(priv, CSR_UCODE_DRV_GP1_SET,
1367 CSR_UCODE_DRV_GP1_BIT_CMD_BLOCKED);
1368
1369 if (!iwl_grab_nic_access(priv)) {
1370 iwl_write_direct32(
1371 priv, HBUS_TARG_MBX_C,
1372 HBUS_TARG_MBX_C_REG_BIT_CMD_BLOCKED);
1373
1374 iwl_release_nic_access(priv);
1375 }
1376
1377 if (!(flags & RXON_CARD_DISABLED)) {
1378 iwl_write32(priv, CSR_UCODE_DRV_GP1_CLR,
1379 CSR_UCODE_DRV_GP1_BIT_CMD_BLOCKED);
1380 if (!iwl_grab_nic_access(priv)) {
1381 iwl_write_direct32(
1382 priv, HBUS_TARG_MBX_C,
1383 HBUS_TARG_MBX_C_REG_BIT_CMD_BLOCKED);
1384
1385 iwl_release_nic_access(priv);
1386 }
1387 }
1388
1389 if (flags & RF_CARD_DISABLED) {
1390 iwl_write32(priv, CSR_UCODE_DRV_GP1_SET,
1391 CSR_UCODE_DRV_GP1_REG_BIT_CT_KILL_EXIT);
1392 iwl_read32(priv, CSR_UCODE_DRV_GP1);
1393 if (!iwl_grab_nic_access(priv))
1394 iwl_release_nic_access(priv);
1395 }
1396 }
1397
1398 if (flags & HW_CARD_DISABLED)
1399 set_bit(STATUS_RF_KILL_HW, &priv->status);
1400 else
1401 clear_bit(STATUS_RF_KILL_HW, &priv->status);
1402
1403
1404 if (flags & SW_CARD_DISABLED)
1405 set_bit(STATUS_RF_KILL_SW, &priv->status);
1406 else
1407 clear_bit(STATUS_RF_KILL_SW, &priv->status);
1408
1409 if (!(flags & RXON_CARD_DISABLED))
1410 iwl_scan_cancel(priv);
1411
1412 if ((test_bit(STATUS_RF_KILL_HW, &status) !=
1413 test_bit(STATUS_RF_KILL_HW, &priv->status)) ||
1414 (test_bit(STATUS_RF_KILL_SW, &status) !=
1415 test_bit(STATUS_RF_KILL_SW, &priv->status)))
1416 queue_work(priv->workqueue, &priv->rf_kill);
1417 else
1418 wake_up_interruptible(&priv->wait_command_queue);
1419 }
1420
1421 /* Cache phy data (Rx signal strength, etc) for HT frame (REPLY_RX_PHY_CMD).
1422 * This will be used later in iwl4965_rx_reply_rx() for REPLY_RX_MPDU_CMD. */
1423 static void iwl4965_rx_reply_rx_phy(struct iwl_priv *priv,
1424 struct iwl_rx_mem_buffer *rxb)
1425 {
1426 struct iwl_rx_packet *pkt = (struct iwl_rx_packet *)rxb->skb->data;
1427 priv->last_phy_res[0] = 1;
1428 memcpy(&priv->last_phy_res[1], &(pkt->u.raw[0]),
1429 sizeof(struct iwl4965_rx_phy_res));
1430 }
1431
1432 /**
1433 * iwl4965_setup_rx_handlers - Initialize Rx handler callbacks
1434 *
1435 * Setup the RX handlers for each of the reply types sent from the uCode
1436 * to the host.
1437 *
1438 * This function chains into the hardware specific files for them to setup
1439 * any hardware specific handlers as well.
1440 */
1441 static void iwl4965_setup_rx_handlers(struct iwl_priv *priv)
1442 {
1443 priv->rx_handlers[REPLY_ALIVE] = iwl_rx_reply_alive;
1444 priv->rx_handlers[REPLY_ERROR] = iwl4965_rx_reply_error;
1445 priv->rx_handlers[CHANNEL_SWITCH_NOTIFICATION] = iwl4965_rx_csa;
1446 priv->rx_handlers[SPECTRUM_MEASURE_NOTIFICATION] =
1447 iwl4965_rx_spectrum_measure_notif;
1448 priv->rx_handlers[PM_SLEEP_NOTIFICATION] = iwl4965_rx_pm_sleep_notif;
1449 priv->rx_handlers[PM_DEBUG_STATISTIC_NOTIFIC] =
1450 iwl4965_rx_pm_debug_statistics_notif;
1451 priv->rx_handlers[BEACON_NOTIFICATION] = iwl4965_rx_beacon_notif;
1452
1453 /*
1454 * The same handler is used for both the REPLY to a discrete
1455 * statistics request from the host as well as for the periodic
1456 * statistics notifications (after received beacons) from the uCode.
1457 */
1458 priv->rx_handlers[REPLY_STATISTICS_CMD] = iwl4965_hw_rx_statistics;
1459 priv->rx_handlers[STATISTICS_NOTIFICATION] = iwl4965_hw_rx_statistics;
1460
1461 iwl_setup_rx_scan_handlers(priv);
1462
1463 /* status change handler */
1464 priv->rx_handlers[CARD_STATE_NOTIFICATION] = iwl4965_rx_card_state_notif;
1465
1466 priv->rx_handlers[MISSED_BEACONS_NOTIFICATION] =
1467 iwl_rx_missed_beacon_notif;
1468 /* Rx handlers */
1469 priv->rx_handlers[REPLY_RX_PHY_CMD] = iwl4965_rx_reply_rx_phy;
1470 priv->rx_handlers[REPLY_RX_MPDU_CMD] = iwl4965_rx_reply_rx;
1471 /* Set up hardware specific Rx handlers */
1472 priv->cfg->ops->lib->rx_handler_setup(priv);
1473 }
1474
1475 /*
1476 * this should be called while priv->lock is locked
1477 */
1478 static void __iwl_rx_replenish(struct iwl_priv *priv)
1479 {
1480 iwl_rx_allocate(priv);
1481 iwl_rx_queue_restock(priv);
1482 }
1483
1484
1485 /**
1486 * iwl_rx_handle - Main entry function for receiving responses from uCode
1487 *
1488 * Uses the priv->rx_handlers callback function array to invoke
1489 * the appropriate handlers, including command responses,
1490 * frame-received notifications, and other notifications.
1491 */
1492 void iwl_rx_handle(struct iwl_priv *priv)
1493 {
1494 struct iwl_rx_mem_buffer *rxb;
1495 struct iwl_rx_packet *pkt;
1496 struct iwl_rx_queue *rxq = &priv->rxq;
1497 u32 r, i;
1498 int reclaim;
1499 unsigned long flags;
1500 u8 fill_rx = 0;
1501 u32 count = 8;
1502
1503 /* uCode's read index (stored in shared DRAM) indicates the last Rx
1504 * buffer that the driver may process (last buffer filled by ucode). */
1505 r = priv->cfg->ops->lib->shared_mem_rx_idx(priv);
1506 i = rxq->read;
1507
1508 /* Rx interrupt, but nothing sent from uCode */
1509 if (i == r)
1510 IWL_DEBUG(IWL_DL_RX, "r = %d, i = %d\n", r, i);
1511
1512 if (iwl_rx_queue_space(rxq) > (RX_QUEUE_SIZE / 2))
1513 fill_rx = 1;
1514
1515 while (i != r) {
1516 rxb = rxq->queue[i];
1517
1518 /* If an RXB doesn't have a Rx queue slot associated with it,
1519 * then a bug has been introduced in the queue refilling
1520 * routines -- catch it here */
1521 BUG_ON(rxb == NULL);
1522
1523 rxq->queue[i] = NULL;
1524
1525 pci_dma_sync_single_for_cpu(priv->pci_dev, rxb->dma_addr,
1526 priv->hw_params.rx_buf_size,
1527 PCI_DMA_FROMDEVICE);
1528 pkt = (struct iwl_rx_packet *)rxb->skb->data;
1529
1530 /* Reclaim a command buffer only if this packet is a response
1531 * to a (driver-originated) command.
1532 * If the packet (e.g. Rx frame) originated from uCode,
1533 * there is no command buffer to reclaim.
1534 * Ucode should set SEQ_RX_FRAME bit if ucode-originated,
1535 * but apparently a few don't get set; catch them here. */
1536 reclaim = !(pkt->hdr.sequence & SEQ_RX_FRAME) &&
1537 (pkt->hdr.cmd != REPLY_RX_PHY_CMD) &&
1538 (pkt->hdr.cmd != REPLY_RX) &&
1539 (pkt->hdr.cmd != REPLY_COMPRESSED_BA) &&
1540 (pkt->hdr.cmd != STATISTICS_NOTIFICATION) &&
1541 (pkt->hdr.cmd != REPLY_TX);
1542
1543 /* Based on type of command response or notification,
1544 * handle those that need handling via function in
1545 * rx_handlers table. See iwl4965_setup_rx_handlers() */
1546 if (priv->rx_handlers[pkt->hdr.cmd]) {
1547 IWL_DEBUG(IWL_DL_RX, "r = %d, i = %d, %s, 0x%02x\n", r,
1548 i, get_cmd_string(pkt->hdr.cmd), pkt->hdr.cmd);
1549 priv->rx_handlers[pkt->hdr.cmd] (priv, rxb);
1550 } else {
1551 /* No handling needed */
1552 IWL_DEBUG(IWL_DL_RX,
1553 "r %d i %d No handler needed for %s, 0x%02x\n",
1554 r, i, get_cmd_string(pkt->hdr.cmd),
1555 pkt->hdr.cmd);
1556 }
1557
1558 if (reclaim) {
1559 /* Invoke any callbacks, transfer the skb to caller, and
1560 * fire off the (possibly) blocking iwl_send_cmd()
1561 * as we reclaim the driver command queue */
1562 if (rxb && rxb->skb)
1563 iwl_tx_cmd_complete(priv, rxb);
1564 else
1565 IWL_WARNING("Claim null rxb?\n");
1566 }
1567
1568 /* For now we just don't re-use anything. We can tweak this
1569 * later to try and re-use notification packets and SKBs that
1570 * fail to Rx correctly */
1571 if (rxb->skb != NULL) {
1572 priv->alloc_rxb_skb--;
1573 dev_kfree_skb_any(rxb->skb);
1574 rxb->skb = NULL;
1575 }
1576
1577 pci_unmap_single(priv->pci_dev, rxb->dma_addr,
1578 priv->hw_params.rx_buf_size,
1579 PCI_DMA_FROMDEVICE);
1580 spin_lock_irqsave(&rxq->lock, flags);
1581 list_add_tail(&rxb->list, &priv->rxq.rx_used);
1582 spin_unlock_irqrestore(&rxq->lock, flags);
1583 i = (i + 1) & RX_QUEUE_MASK;
1584 /* If there are a lot of unused frames,
1585 * restock the Rx queue so ucode wont assert. */
1586 if (fill_rx) {
1587 count++;
1588 if (count >= 8) {
1589 priv->rxq.read = i;
1590 __iwl_rx_replenish(priv);
1591 count = 0;
1592 }
1593 }
1594 }
1595
1596 /* Backtrack one entry */
1597 priv->rxq.read = i;
1598 iwl_rx_queue_restock(priv);
1599 }
1600 /* Convert linear signal-to-noise ratio into dB */
1601 static u8 ratio2dB[100] = {
1602 /* 0 1 2 3 4 5 6 7 8 9 */
1603 0, 0, 6, 10, 12, 14, 16, 17, 18, 19, /* 00 - 09 */
1604 20, 21, 22, 22, 23, 23, 24, 25, 26, 26, /* 10 - 19 */
1605 26, 26, 26, 27, 27, 28, 28, 28, 29, 29, /* 20 - 29 */
1606 29, 30, 30, 30, 31, 31, 31, 31, 32, 32, /* 30 - 39 */
1607 32, 32, 32, 33, 33, 33, 33, 33, 34, 34, /* 40 - 49 */
1608 34, 34, 34, 34, 35, 35, 35, 35, 35, 35, /* 50 - 59 */
1609 36, 36, 36, 36, 36, 36, 36, 37, 37, 37, /* 60 - 69 */
1610 37, 37, 37, 37, 37, 38, 38, 38, 38, 38, /* 70 - 79 */
1611 38, 38, 38, 38, 38, 39, 39, 39, 39, 39, /* 80 - 89 */
1612 39, 39, 39, 39, 39, 40, 40, 40, 40, 40 /* 90 - 99 */
1613 };
1614
1615 /* Calculates a relative dB value from a ratio of linear
1616 * (i.e. not dB) signal levels.
1617 * Conversion assumes that levels are voltages (20*log), not powers (10*log). */
1618 int iwl4965_calc_db_from_ratio(int sig_ratio)
1619 {
1620 /* 1000:1 or higher just report as 60 dB */
1621 if (sig_ratio >= 1000)
1622 return 60;
1623
1624 /* 100:1 or higher, divide by 10 and use table,
1625 * add 20 dB to make up for divide by 10 */
1626 if (sig_ratio >= 100)
1627 return (20 + (int)ratio2dB[sig_ratio/10]);
1628
1629 /* We shouldn't see this */
1630 if (sig_ratio < 1)
1631 return 0;
1632
1633 /* Use table for ratios 1:1 - 99:1 */
1634 return (int)ratio2dB[sig_ratio];
1635 }
1636
1637 #define PERFECT_RSSI (-20) /* dBm */
1638 #define WORST_RSSI (-95) /* dBm */
1639 #define RSSI_RANGE (PERFECT_RSSI - WORST_RSSI)
1640
1641 /* Calculate an indication of rx signal quality (a percentage, not dBm!).
1642 * See http://www.ces.clemson.edu/linux/signal_quality.shtml for info
1643 * about formulas used below. */
1644 int iwl4965_calc_sig_qual(int rssi_dbm, int noise_dbm)
1645 {
1646 int sig_qual;
1647 int degradation = PERFECT_RSSI - rssi_dbm;
1648
1649 /* If we get a noise measurement, use signal-to-noise ratio (SNR)
1650 * as indicator; formula is (signal dbm - noise dbm).
1651 * SNR at or above 40 is a great signal (100%).
1652 * Below that, scale to fit SNR of 0 - 40 dB within 0 - 100% indicator.
1653 * Weakest usable signal is usually 10 - 15 dB SNR. */
1654 if (noise_dbm) {
1655 if (rssi_dbm - noise_dbm >= 40)
1656 return 100;
1657 else if (rssi_dbm < noise_dbm)
1658 return 0;
1659 sig_qual = ((rssi_dbm - noise_dbm) * 5) / 2;
1660
1661 /* Else use just the signal level.
1662 * This formula is a least squares fit of data points collected and
1663 * compared with a reference system that had a percentage (%) display
1664 * for signal quality. */
1665 } else
1666 sig_qual = (100 * (RSSI_RANGE * RSSI_RANGE) - degradation *
1667 (15 * RSSI_RANGE + 62 * degradation)) /
1668 (RSSI_RANGE * RSSI_RANGE);
1669
1670 if (sig_qual > 100)
1671 sig_qual = 100;
1672 else if (sig_qual < 1)
1673 sig_qual = 0;
1674
1675 return sig_qual;
1676 }
1677
1678 #ifdef CONFIG_IWLWIFI_DEBUG
1679 static void iwl4965_print_rx_config_cmd(struct iwl_priv *priv)
1680 {
1681 struct iwl_rxon_cmd *rxon = &priv->staging_rxon;
1682 DECLARE_MAC_BUF(mac);
1683
1684 IWL_DEBUG_RADIO("RX CONFIG:\n");
1685 iwl_print_hex_dump(priv, IWL_DL_RADIO, (u8 *) rxon, sizeof(*rxon));
1686 IWL_DEBUG_RADIO("u16 channel: 0x%x\n", le16_to_cpu(rxon->channel));
1687 IWL_DEBUG_RADIO("u32 flags: 0x%08X\n", le32_to_cpu(rxon->flags));
1688 IWL_DEBUG_RADIO("u32 filter_flags: 0x%08x\n",
1689 le32_to_cpu(rxon->filter_flags));
1690 IWL_DEBUG_RADIO("u8 dev_type: 0x%x\n", rxon->dev_type);
1691 IWL_DEBUG_RADIO("u8 ofdm_basic_rates: 0x%02x\n",
1692 rxon->ofdm_basic_rates);
1693 IWL_DEBUG_RADIO("u8 cck_basic_rates: 0x%02x\n", rxon->cck_basic_rates);
1694 IWL_DEBUG_RADIO("u8[6] node_addr: %s\n",
1695 print_mac(mac, rxon->node_addr));
1696 IWL_DEBUG_RADIO("u8[6] bssid_addr: %s\n",
1697 print_mac(mac, rxon->bssid_addr));
1698 IWL_DEBUG_RADIO("u16 assoc_id: 0x%x\n", le16_to_cpu(rxon->assoc_id));
1699 }
1700 #endif
1701
1702 static void iwl4965_enable_interrupts(struct iwl_priv *priv)
1703 {
1704 IWL_DEBUG_ISR("Enabling interrupts\n");
1705 set_bit(STATUS_INT_ENABLED, &priv->status);
1706 iwl_write32(priv, CSR_INT_MASK, CSR_INI_SET_MASK);
1707 }
1708
1709 /* call this function to flush any scheduled tasklet */
1710 static inline void iwl_synchronize_irq(struct iwl_priv *priv)
1711 {
1712 /* wait to make sure we flush pedding tasklet*/
1713 synchronize_irq(priv->pci_dev->irq);
1714 tasklet_kill(&priv->irq_tasklet);
1715 }
1716
1717 static inline void iwl4965_disable_interrupts(struct iwl_priv *priv)
1718 {
1719 clear_bit(STATUS_INT_ENABLED, &priv->status);
1720
1721 /* disable interrupts from uCode/NIC to host */
1722 iwl_write32(priv, CSR_INT_MASK, 0x00000000);
1723
1724 /* acknowledge/clear/reset any interrupts still pending
1725 * from uCode or flow handler (Rx/Tx DMA) */
1726 iwl_write32(priv, CSR_INT, 0xffffffff);
1727 iwl_write32(priv, CSR_FH_INT_STATUS, 0xffffffff);
1728 IWL_DEBUG_ISR("Disabled interrupts\n");
1729 }
1730
1731
1732 /**
1733 * iwl4965_irq_handle_error - called for HW or SW error interrupt from card
1734 */
1735 static void iwl4965_irq_handle_error(struct iwl_priv *priv)
1736 {
1737 /* Set the FW error flag -- cleared on iwl4965_down */
1738 set_bit(STATUS_FW_ERROR, &priv->status);
1739
1740 /* Cancel currently queued command. */
1741 clear_bit(STATUS_HCMD_ACTIVE, &priv->status);
1742
1743 #ifdef CONFIG_IWLWIFI_DEBUG
1744 if (priv->debug_level & IWL_DL_FW_ERRORS) {
1745 iwl_dump_nic_error_log(priv);
1746 iwl_dump_nic_event_log(priv);
1747 iwl4965_print_rx_config_cmd(priv);
1748 }
1749 #endif
1750
1751 wake_up_interruptible(&priv->wait_command_queue);
1752
1753 /* Keep the restart process from trying to send host
1754 * commands by clearing the INIT status bit */
1755 clear_bit(STATUS_READY, &priv->status);
1756
1757 if (!test_bit(STATUS_EXIT_PENDING, &priv->status)) {
1758 IWL_DEBUG(IWL_DL_FW_ERRORS,
1759 "Restarting adapter due to uCode error.\n");
1760
1761 if (iwl_is_associated(priv)) {
1762 memcpy(&priv->recovery_rxon, &priv->active_rxon,
1763 sizeof(priv->recovery_rxon));
1764 priv->error_recovering = 1;
1765 }
1766 if (priv->cfg->mod_params->restart_fw)
1767 queue_work(priv->workqueue, &priv->restart);
1768 }
1769 }
1770
1771 static void iwl4965_error_recovery(struct iwl_priv *priv)
1772 {
1773 unsigned long flags;
1774
1775 memcpy(&priv->staging_rxon, &priv->recovery_rxon,
1776 sizeof(priv->staging_rxon));
1777 priv->staging_rxon.filter_flags &= ~RXON_FILTER_ASSOC_MSK;
1778 iwl4965_commit_rxon(priv);
1779
1780 iwl_rxon_add_station(priv, priv->bssid, 1);
1781
1782 spin_lock_irqsave(&priv->lock, flags);
1783 priv->assoc_id = le16_to_cpu(priv->staging_rxon.assoc_id);
1784 priv->error_recovering = 0;
1785 spin_unlock_irqrestore(&priv->lock, flags);
1786 }
1787
1788 static void iwl4965_irq_tasklet(struct iwl_priv *priv)
1789 {
1790 u32 inta, handled = 0;
1791 u32 inta_fh;
1792 unsigned long flags;
1793 #ifdef CONFIG_IWLWIFI_DEBUG
1794 u32 inta_mask;
1795 #endif
1796
1797 spin_lock_irqsave(&priv->lock, flags);
1798
1799 /* Ack/clear/reset pending uCode interrupts.
1800 * Note: Some bits in CSR_INT are "OR" of bits in CSR_FH_INT_STATUS,
1801 * and will clear only when CSR_FH_INT_STATUS gets cleared. */
1802 inta = iwl_read32(priv, CSR_INT);
1803 iwl_write32(priv, CSR_INT, inta);
1804
1805 /* Ack/clear/reset pending flow-handler (DMA) interrupts.
1806 * Any new interrupts that happen after this, either while we're
1807 * in this tasklet, or later, will show up in next ISR/tasklet. */
1808 inta_fh = iwl_read32(priv, CSR_FH_INT_STATUS);
1809 iwl_write32(priv, CSR_FH_INT_STATUS, inta_fh);
1810
1811 #ifdef CONFIG_IWLWIFI_DEBUG
1812 if (priv->debug_level & IWL_DL_ISR) {
1813 /* just for debug */
1814 inta_mask = iwl_read32(priv, CSR_INT_MASK);
1815 IWL_DEBUG_ISR("inta 0x%08x, enabled 0x%08x, fh 0x%08x\n",
1816 inta, inta_mask, inta_fh);
1817 }
1818 #endif
1819
1820 /* Since CSR_INT and CSR_FH_INT_STATUS reads and clears are not
1821 * atomic, make sure that inta covers all the interrupts that
1822 * we've discovered, even if FH interrupt came in just after
1823 * reading CSR_INT. */
1824 if (inta_fh & CSR49_FH_INT_RX_MASK)
1825 inta |= CSR_INT_BIT_FH_RX;
1826 if (inta_fh & CSR49_FH_INT_TX_MASK)
1827 inta |= CSR_INT_BIT_FH_TX;
1828
1829 /* Now service all interrupt bits discovered above. */
1830 if (inta & CSR_INT_BIT_HW_ERR) {
1831 IWL_ERROR("Microcode HW error detected. Restarting.\n");
1832
1833 /* Tell the device to stop sending interrupts */
1834 iwl4965_disable_interrupts(priv);
1835
1836 iwl4965_irq_handle_error(priv);
1837
1838 handled |= CSR_INT_BIT_HW_ERR;
1839
1840 spin_unlock_irqrestore(&priv->lock, flags);
1841
1842 return;
1843 }
1844
1845 #ifdef CONFIG_IWLWIFI_DEBUG
1846 if (priv->debug_level & (IWL_DL_ISR)) {
1847 /* NIC fires this, but we don't use it, redundant with WAKEUP */
1848 if (inta & CSR_INT_BIT_SCD)
1849 IWL_DEBUG_ISR("Scheduler finished to transmit "
1850 "the frame/frames.\n");
1851
1852 /* Alive notification via Rx interrupt will do the real work */
1853 if (inta & CSR_INT_BIT_ALIVE)
1854 IWL_DEBUG_ISR("Alive interrupt\n");
1855 }
1856 #endif
1857 /* Safely ignore these bits for debug checks below */
1858 inta &= ~(CSR_INT_BIT_SCD | CSR_INT_BIT_ALIVE);
1859
1860 /* HW RF KILL switch toggled */
1861 if (inta & CSR_INT_BIT_RF_KILL) {
1862 int hw_rf_kill = 0;
1863 if (!(iwl_read32(priv, CSR_GP_CNTRL) &
1864 CSR_GP_CNTRL_REG_FLAG_HW_RF_KILL_SW))
1865 hw_rf_kill = 1;
1866
1867 IWL_DEBUG(IWL_DL_RF_KILL, "RF_KILL bit toggled to %s.\n",
1868 hw_rf_kill ? "disable radio":"enable radio");
1869
1870 /* Queue restart only if RF_KILL switch was set to "kill"
1871 * when we loaded driver, and is now set to "enable".
1872 * After we're Alive, RF_KILL gets handled by
1873 * iwl4965_rx_card_state_notif() */
1874 if (!hw_rf_kill && !test_bit(STATUS_ALIVE, &priv->status)) {
1875 clear_bit(STATUS_RF_KILL_HW, &priv->status);
1876 queue_work(priv->workqueue, &priv->restart);
1877 }
1878
1879 handled |= CSR_INT_BIT_RF_KILL;
1880 }
1881
1882 /* Chip got too hot and stopped itself */
1883 if (inta & CSR_INT_BIT_CT_KILL) {
1884 IWL_ERROR("Microcode CT kill error detected.\n");
1885 handled |= CSR_INT_BIT_CT_KILL;
1886 }
1887
1888 /* Error detected by uCode */
1889 if (inta & CSR_INT_BIT_SW_ERR) {
1890 IWL_ERROR("Microcode SW error detected. Restarting 0x%X.\n",
1891 inta);
1892 iwl4965_irq_handle_error(priv);
1893 handled |= CSR_INT_BIT_SW_ERR;
1894 }
1895
1896 /* uCode wakes up after power-down sleep */
1897 if (inta & CSR_INT_BIT_WAKEUP) {
1898 IWL_DEBUG_ISR("Wakeup interrupt\n");
1899 iwl_rx_queue_update_write_ptr(priv, &priv->rxq);
1900 iwl_txq_update_write_ptr(priv, &priv->txq[0]);
1901 iwl_txq_update_write_ptr(priv, &priv->txq[1]);
1902 iwl_txq_update_write_ptr(priv, &priv->txq[2]);
1903 iwl_txq_update_write_ptr(priv, &priv->txq[3]);
1904 iwl_txq_update_write_ptr(priv, &priv->txq[4]);
1905 iwl_txq_update_write_ptr(priv, &priv->txq[5]);
1906
1907 handled |= CSR_INT_BIT_WAKEUP;
1908 }
1909
1910 /* All uCode command responses, including Tx command responses,
1911 * Rx "responses" (frame-received notification), and other
1912 * notifications from uCode come through here*/
1913 if (inta & (CSR_INT_BIT_FH_RX | CSR_INT_BIT_SW_RX)) {
1914 iwl_rx_handle(priv);
1915 handled |= (CSR_INT_BIT_FH_RX | CSR_INT_BIT_SW_RX);
1916 }
1917
1918 if (inta & CSR_INT_BIT_FH_TX) {
1919 IWL_DEBUG_ISR("Tx interrupt\n");
1920 handled |= CSR_INT_BIT_FH_TX;
1921 /* FH finished to write, send event */
1922 priv->ucode_write_complete = 1;
1923 wake_up_interruptible(&priv->wait_command_queue);
1924 }
1925
1926 if (inta & ~handled)
1927 IWL_ERROR("Unhandled INTA bits 0x%08x\n", inta & ~handled);
1928
1929 if (inta & ~CSR_INI_SET_MASK) {
1930 IWL_WARNING("Disabled INTA bits 0x%08x were pending\n",
1931 inta & ~CSR_INI_SET_MASK);
1932 IWL_WARNING(" with FH_INT = 0x%08x\n", inta_fh);
1933 }
1934
1935 /* Re-enable all interrupts */
1936 /* only Re-enable if diabled by irq */
1937 if (test_bit(STATUS_INT_ENABLED, &priv->status))
1938 iwl4965_enable_interrupts(priv);
1939
1940 #ifdef CONFIG_IWLWIFI_DEBUG
1941 if (priv->debug_level & (IWL_DL_ISR)) {
1942 inta = iwl_read32(priv, CSR_INT);
1943 inta_mask = iwl_read32(priv, CSR_INT_MASK);
1944 inta_fh = iwl_read32(priv, CSR_FH_INT_STATUS);
1945 IWL_DEBUG_ISR("End inta 0x%08x, enabled 0x%08x, fh 0x%08x, "
1946 "flags 0x%08lx\n", inta, inta_mask, inta_fh, flags);
1947 }
1948 #endif
1949 spin_unlock_irqrestore(&priv->lock, flags);
1950 }
1951
1952 static irqreturn_t iwl4965_isr(int irq, void *data)
1953 {
1954 struct iwl_priv *priv = data;
1955 u32 inta, inta_mask;
1956 u32 inta_fh;
1957 if (!priv)
1958 return IRQ_NONE;
1959
1960 spin_lock(&priv->lock);
1961
1962 /* Disable (but don't clear!) interrupts here to avoid
1963 * back-to-back ISRs and sporadic interrupts from our NIC.
1964 * If we have something to service, the tasklet will re-enable ints.
1965 * If we *don't* have something, we'll re-enable before leaving here. */
1966 inta_mask = iwl_read32(priv, CSR_INT_MASK); /* just for debug */
1967 iwl_write32(priv, CSR_INT_MASK, 0x00000000);
1968
1969 /* Discover which interrupts are active/pending */
1970 inta = iwl_read32(priv, CSR_INT);
1971 inta_fh = iwl_read32(priv, CSR_FH_INT_STATUS);
1972
1973 /* Ignore interrupt if there's nothing in NIC to service.
1974 * This may be due to IRQ shared with another device,
1975 * or due to sporadic interrupts thrown from our NIC. */
1976 if (!inta && !inta_fh) {
1977 IWL_DEBUG_ISR("Ignore interrupt, inta == 0, inta_fh == 0\n");
1978 goto none;
1979 }
1980
1981 if ((inta == 0xFFFFFFFF) || ((inta & 0xFFFFFFF0) == 0xa5a5a5a0)) {
1982 /* Hardware disappeared. It might have already raised
1983 * an interrupt */
1984 IWL_WARNING("HARDWARE GONE?? INTA == 0x%080x\n", inta);
1985 goto unplugged;
1986 }
1987
1988 IWL_DEBUG_ISR("ISR inta 0x%08x, enabled 0x%08x, fh 0x%08x\n",
1989 inta, inta_mask, inta_fh);
1990
1991 inta &= ~CSR_INT_BIT_SCD;
1992
1993 /* iwl4965_irq_tasklet() will service interrupts and re-enable them */
1994 if (likely(inta || inta_fh))
1995 tasklet_schedule(&priv->irq_tasklet);
1996
1997 unplugged:
1998 spin_unlock(&priv->lock);
1999 return IRQ_HANDLED;
2000
2001 none:
2002 /* re-enable interrupts here since we don't have anything to service. */
2003 /* only Re-enable if diabled by irq */
2004 if (test_bit(STATUS_INT_ENABLED, &priv->status))
2005 iwl4965_enable_interrupts(priv);
2006 spin_unlock(&priv->lock);
2007 return IRQ_NONE;
2008 }
2009
2010 /******************************************************************************
2011 *
2012 * uCode download functions
2013 *
2014 ******************************************************************************/
2015
2016 static void iwl4965_dealloc_ucode_pci(struct iwl_priv *priv)
2017 {
2018 iwl_free_fw_desc(priv->pci_dev, &priv->ucode_code);
2019 iwl_free_fw_desc(priv->pci_dev, &priv->ucode_data);
2020 iwl_free_fw_desc(priv->pci_dev, &priv->ucode_data_backup);
2021 iwl_free_fw_desc(priv->pci_dev, &priv->ucode_init);
2022 iwl_free_fw_desc(priv->pci_dev, &priv->ucode_init_data);
2023 iwl_free_fw_desc(priv->pci_dev, &priv->ucode_boot);
2024 }
2025
2026 static void iwl4965_nic_start(struct iwl_priv *priv)
2027 {
2028 /* Remove all resets to allow NIC to operate */
2029 iwl_write32(priv, CSR_RESET, 0);
2030 }
2031
2032
2033 /**
2034 * iwl4965_read_ucode - Read uCode images from disk file.
2035 *
2036 * Copy into buffers for card to fetch via bus-mastering
2037 */
2038 static int iwl4965_read_ucode(struct iwl_priv *priv)
2039 {
2040 struct iwl4965_ucode *ucode;
2041 int ret;
2042 const struct firmware *ucode_raw;
2043 const char *name = priv->cfg->fw_name;
2044 u8 *src;
2045 size_t len;
2046 u32 ver, inst_size, data_size, init_size, init_data_size, boot_size;
2047
2048 /* Ask kernel firmware_class module to get the boot firmware off disk.
2049 * request_firmware() is synchronous, file is in memory on return. */
2050 ret = request_firmware(&ucode_raw, name, &priv->pci_dev->dev);
2051 if (ret < 0) {
2052 IWL_ERROR("%s firmware file req failed: Reason %d\n",
2053 name, ret);
2054 goto error;
2055 }
2056
2057 IWL_DEBUG_INFO("Got firmware '%s' file (%zd bytes) from disk\n",
2058 name, ucode_raw->size);
2059
2060 /* Make sure that we got at least our header! */
2061 if (ucode_raw->size < sizeof(*ucode)) {
2062 IWL_ERROR("File size way too small!\n");
2063 ret = -EINVAL;
2064 goto err_release;
2065 }
2066
2067 /* Data from ucode file: header followed by uCode images */
2068 ucode = (void *)ucode_raw->data;
2069
2070 ver = le32_to_cpu(ucode->ver);
2071 inst_size = le32_to_cpu(ucode->inst_size);
2072 data_size = le32_to_cpu(ucode->data_size);
2073 init_size = le32_to_cpu(ucode->init_size);
2074 init_data_size = le32_to_cpu(ucode->init_data_size);
2075 boot_size = le32_to_cpu(ucode->boot_size);
2076
2077 IWL_DEBUG_INFO("f/w package hdr ucode version = 0x%x\n", ver);
2078 IWL_DEBUG_INFO("f/w package hdr runtime inst size = %u\n",
2079 inst_size);
2080 IWL_DEBUG_INFO("f/w package hdr runtime data size = %u\n",
2081 data_size);
2082 IWL_DEBUG_INFO("f/w package hdr init inst size = %u\n",
2083 init_size);
2084 IWL_DEBUG_INFO("f/w package hdr init data size = %u\n",
2085 init_data_size);
2086 IWL_DEBUG_INFO("f/w package hdr boot inst size = %u\n",
2087 boot_size);
2088
2089 /* Verify size of file vs. image size info in file's header */
2090 if (ucode_raw->size < sizeof(*ucode) +
2091 inst_size + data_size + init_size +
2092 init_data_size + boot_size) {
2093
2094 IWL_DEBUG_INFO("uCode file size %d too small\n",
2095 (int)ucode_raw->size);
2096 ret = -EINVAL;
2097 goto err_release;
2098 }
2099
2100 /* Verify that uCode images will fit in card's SRAM */
2101 if (inst_size > priv->hw_params.max_inst_size) {
2102 IWL_DEBUG_INFO("uCode instr len %d too large to fit in\n",
2103 inst_size);
2104 ret = -EINVAL;
2105 goto err_release;
2106 }
2107
2108 if (data_size > priv->hw_params.max_data_size) {
2109 IWL_DEBUG_INFO("uCode data len %d too large to fit in\n",
2110 data_size);
2111 ret = -EINVAL;
2112 goto err_release;
2113 }
2114 if (init_size > priv->hw_params.max_inst_size) {
2115 IWL_DEBUG_INFO
2116 ("uCode init instr len %d too large to fit in\n",
2117 init_size);
2118 ret = -EINVAL;
2119 goto err_release;
2120 }
2121 if (init_data_size > priv->hw_params.max_data_size) {
2122 IWL_DEBUG_INFO
2123 ("uCode init data len %d too large to fit in\n",
2124 init_data_size);
2125 ret = -EINVAL;
2126 goto err_release;
2127 }
2128 if (boot_size > priv->hw_params.max_bsm_size) {
2129 IWL_DEBUG_INFO
2130 ("uCode boot instr len %d too large to fit in\n",
2131 boot_size);
2132 ret = -EINVAL;
2133 goto err_release;
2134 }
2135
2136 /* Allocate ucode buffers for card's bus-master loading ... */
2137
2138 /* Runtime instructions and 2 copies of data:
2139 * 1) unmodified from disk
2140 * 2) backup cache for save/restore during power-downs */
2141 priv->ucode_code.len = inst_size;
2142 iwl_alloc_fw_desc(priv->pci_dev, &priv->ucode_code);
2143
2144 priv->ucode_data.len = data_size;
2145 iwl_alloc_fw_desc(priv->pci_dev, &priv->ucode_data);
2146
2147 priv->ucode_data_backup.len = data_size;
2148 iwl_alloc_fw_desc(priv->pci_dev, &priv->ucode_data_backup);
2149
2150 /* Initialization instructions and data */
2151 if (init_size && init_data_size) {
2152 priv->ucode_init.len = init_size;
2153 iwl_alloc_fw_desc(priv->pci_dev, &priv->ucode_init);
2154
2155 priv->ucode_init_data.len = init_data_size;
2156 iwl_alloc_fw_desc(priv->pci_dev, &priv->ucode_init_data);
2157
2158 if (!priv->ucode_init.v_addr || !priv->ucode_init_data.v_addr)
2159 goto err_pci_alloc;
2160 }
2161
2162 /* Bootstrap (instructions only, no data) */
2163 if (boot_size) {
2164 priv->ucode_boot.len = boot_size;
2165 iwl_alloc_fw_desc(priv->pci_dev, &priv->ucode_boot);
2166
2167 if (!priv->ucode_boot.v_addr)
2168 goto err_pci_alloc;
2169 }
2170
2171 /* Copy images into buffers for card's bus-master reads ... */
2172
2173 /* Runtime instructions (first block of data in file) */
2174 src = &ucode->data[0];
2175 len = priv->ucode_code.len;
2176 IWL_DEBUG_INFO("Copying (but not loading) uCode instr len %Zd\n", len);
2177 memcpy(priv->ucode_code.v_addr, src, len);
2178 IWL_DEBUG_INFO("uCode instr buf vaddr = 0x%p, paddr = 0x%08x\n",
2179 priv->ucode_code.v_addr, (u32)priv->ucode_code.p_addr);
2180
2181 /* Runtime data (2nd block)
2182 * NOTE: Copy into backup buffer will be done in iwl4965_up() */
2183 src = &ucode->data[inst_size];
2184 len = priv->ucode_data.len;
2185 IWL_DEBUG_INFO("Copying (but not loading) uCode data len %Zd\n", len);
2186 memcpy(priv->ucode_data.v_addr, src, len);
2187 memcpy(priv->ucode_data_backup.v_addr, src, len);
2188
2189 /* Initialization instructions (3rd block) */
2190 if (init_size) {
2191 src = &ucode->data[inst_size + data_size];
2192 len = priv->ucode_init.len;
2193 IWL_DEBUG_INFO("Copying (but not loading) init instr len %Zd\n",
2194 len);
2195 memcpy(priv->ucode_init.v_addr, src, len);
2196 }
2197
2198 /* Initialization data (4th block) */
2199 if (init_data_size) {
2200 src = &ucode->data[inst_size + data_size + init_size];
2201 len = priv->ucode_init_data.len;
2202 IWL_DEBUG_INFO("Copying (but not loading) init data len %Zd\n",
2203 len);
2204 memcpy(priv->ucode_init_data.v_addr, src, len);
2205 }
2206
2207 /* Bootstrap instructions (5th block) */
2208 src = &ucode->data[inst_size + data_size + init_size + init_data_size];
2209 len = priv->ucode_boot.len;
2210 IWL_DEBUG_INFO("Copying (but not loading) boot instr len %Zd\n", len);
2211 memcpy(priv->ucode_boot.v_addr, src, len);
2212
2213 /* We have our copies now, allow OS release its copies */
2214 release_firmware(ucode_raw);
2215 return 0;
2216
2217 err_pci_alloc:
2218 IWL_ERROR("failed to allocate pci memory\n");
2219 ret = -ENOMEM;
2220 iwl4965_dealloc_ucode_pci(priv);
2221
2222 err_release:
2223 release_firmware(ucode_raw);
2224
2225 error:
2226 return ret;
2227 }
2228
2229 /**
2230 * iwl_alive_start - called after REPLY_ALIVE notification received
2231 * from protocol/runtime uCode (initialization uCode's
2232 * Alive gets handled by iwl_init_alive_start()).
2233 */
2234 static void iwl_alive_start(struct iwl_priv *priv)
2235 {
2236 int ret = 0;
2237
2238 IWL_DEBUG_INFO("Runtime Alive received.\n");
2239
2240 if (priv->card_alive.is_valid != UCODE_VALID_OK) {
2241 /* We had an error bringing up the hardware, so take it
2242 * all the way back down so we can try again */
2243 IWL_DEBUG_INFO("Alive failed.\n");
2244 goto restart;
2245 }
2246
2247 /* Initialize uCode has loaded Runtime uCode ... verify inst image.
2248 * This is a paranoid check, because we would not have gotten the
2249 * "runtime" alive if code weren't properly loaded. */
2250 if (iwl_verify_ucode(priv)) {
2251 /* Runtime instruction load was bad;
2252 * take it all the way back down so we can try again */
2253 IWL_DEBUG_INFO("Bad runtime uCode load.\n");
2254 goto restart;
2255 }
2256
2257 iwlcore_clear_stations_table(priv);
2258 ret = priv->cfg->ops->lib->alive_notify(priv);
2259 if (ret) {
2260 IWL_WARNING("Could not complete ALIVE transition [ntf]: %d\n",
2261 ret);
2262 goto restart;
2263 }
2264
2265 /* After the ALIVE response, we can send host commands to 4965 uCode */
2266 set_bit(STATUS_ALIVE, &priv->status);
2267
2268 if (iwl_is_rfkill(priv))
2269 return;
2270
2271 ieee80211_wake_queues(priv->hw);
2272
2273 priv->active_rate = priv->rates_mask;
2274 priv->active_rate_basic = priv->rates_mask & IWL_BASIC_RATES_MASK;
2275
2276 if (iwl_is_associated(priv)) {
2277 struct iwl_rxon_cmd *active_rxon =
2278 (struct iwl_rxon_cmd *)&priv->active_rxon;
2279
2280 memcpy(&priv->staging_rxon, &priv->active_rxon,
2281 sizeof(priv->staging_rxon));
2282 active_rxon->filter_flags &= ~RXON_FILTER_ASSOC_MSK;
2283 } else {
2284 /* Initialize our rx_config data */
2285 iwl4965_connection_init_rx_config(priv);
2286 memcpy(priv->staging_rxon.node_addr, priv->mac_addr, ETH_ALEN);
2287 }
2288
2289 /* Configure Bluetooth device coexistence support */
2290 iwl4965_send_bt_config(priv);
2291
2292 iwl_reset_run_time_calib(priv);
2293
2294 /* Configure the adapter for unassociated operation */
2295 iwl4965_commit_rxon(priv);
2296
2297 /* At this point, the NIC is initialized and operational */
2298 iwl_rf_kill_ct_config(priv);
2299
2300 iwl_leds_register(priv);
2301
2302 IWL_DEBUG_INFO("ALIVE processing complete.\n");
2303 set_bit(STATUS_READY, &priv->status);
2304 wake_up_interruptible(&priv->wait_command_queue);
2305
2306 if (priv->error_recovering)
2307 iwl4965_error_recovery(priv);
2308
2309 iwlcore_low_level_notify(priv, IWLCORE_START_EVT);
2310 ieee80211_notify_mac(priv->hw, IEEE80211_NOTIFY_RE_ASSOC);
2311
2312 if (test_and_clear_bit(STATUS_MODE_PENDING, &priv->status))
2313 iwl4965_set_mode(priv, priv->iw_mode);
2314
2315 return;
2316
2317 restart:
2318 queue_work(priv->workqueue, &priv->restart);
2319 }
2320
2321 static void iwl_cancel_deferred_work(struct iwl_priv *priv);
2322
2323 static void __iwl4965_down(struct iwl_priv *priv)
2324 {
2325 unsigned long flags;
2326 int exit_pending = test_bit(STATUS_EXIT_PENDING, &priv->status);
2327
2328 IWL_DEBUG_INFO(DRV_NAME " is going down\n");
2329
2330 if (!exit_pending)
2331 set_bit(STATUS_EXIT_PENDING, &priv->status);
2332
2333 iwl_leds_unregister(priv);
2334
2335 iwlcore_low_level_notify(priv, IWLCORE_STOP_EVT);
2336
2337 iwlcore_clear_stations_table(priv);
2338
2339 /* Unblock any waiting calls */
2340 wake_up_interruptible_all(&priv->wait_command_queue);
2341
2342 /* Wipe out the EXIT_PENDING status bit if we are not actually
2343 * exiting the module */
2344 if (!exit_pending)
2345 clear_bit(STATUS_EXIT_PENDING, &priv->status);
2346
2347 /* stop and reset the on-board processor */
2348 iwl_write32(priv, CSR_RESET, CSR_RESET_REG_FLAG_NEVO_RESET);
2349
2350 /* tell the device to stop sending interrupts */
2351 spin_lock_irqsave(&priv->lock, flags);
2352 iwl4965_disable_interrupts(priv);
2353 spin_unlock_irqrestore(&priv->lock, flags);
2354 iwl_synchronize_irq(priv);
2355
2356 if (priv->mac80211_registered)
2357 ieee80211_stop_queues(priv->hw);
2358
2359 /* If we have not previously called iwl4965_init() then
2360 * clear all bits but the RF Kill and SUSPEND bits and return */
2361 if (!iwl_is_init(priv)) {
2362 priv->status = test_bit(STATUS_RF_KILL_HW, &priv->status) <<
2363 STATUS_RF_KILL_HW |
2364 test_bit(STATUS_RF_KILL_SW, &priv->status) <<
2365 STATUS_RF_KILL_SW |
2366 test_bit(STATUS_GEO_CONFIGURED, &priv->status) <<
2367 STATUS_GEO_CONFIGURED |
2368 test_bit(STATUS_IN_SUSPEND, &priv->status) <<
2369 STATUS_IN_SUSPEND;
2370 goto exit;
2371 }
2372
2373 /* ...otherwise clear out all the status bits but the RF Kill and
2374 * SUSPEND bits and continue taking the NIC down. */
2375 priv->status &= test_bit(STATUS_RF_KILL_HW, &priv->status) <<
2376 STATUS_RF_KILL_HW |
2377 test_bit(STATUS_RF_KILL_SW, &priv->status) <<
2378 STATUS_RF_KILL_SW |
2379 test_bit(STATUS_GEO_CONFIGURED, &priv->status) <<
2380 STATUS_GEO_CONFIGURED |
2381 test_bit(STATUS_IN_SUSPEND, &priv->status) <<
2382 STATUS_IN_SUSPEND |
2383 test_bit(STATUS_FW_ERROR, &priv->status) <<
2384 STATUS_FW_ERROR;
2385
2386 spin_lock_irqsave(&priv->lock, flags);
2387 iwl_clear_bit(priv, CSR_GP_CNTRL,
2388 CSR_GP_CNTRL_REG_FLAG_MAC_ACCESS_REQ);
2389 spin_unlock_irqrestore(&priv->lock, flags);
2390
2391 iwl_txq_ctx_stop(priv);
2392 iwl_rxq_stop(priv);
2393
2394 spin_lock_irqsave(&priv->lock, flags);
2395 if (!iwl_grab_nic_access(priv)) {
2396 iwl_write_prph(priv, APMG_CLK_DIS_REG,
2397 APMG_CLK_VAL_DMA_CLK_RQT);
2398 iwl_release_nic_access(priv);
2399 }
2400 spin_unlock_irqrestore(&priv->lock, flags);
2401
2402 udelay(5);
2403
2404 /* FIXME: apm_ops.suspend(priv) */
2405 priv->cfg->ops->lib->apm_ops.reset(priv);
2406 priv->cfg->ops->lib->free_shared_mem(priv);
2407
2408 exit:
2409 memset(&priv->card_alive, 0, sizeof(struct iwl_alive_resp));
2410
2411 if (priv->ibss_beacon)
2412 dev_kfree_skb(priv->ibss_beacon);
2413 priv->ibss_beacon = NULL;
2414
2415 /* clear out any free frames */
2416 iwl_clear_free_frames(priv);
2417 }
2418
2419 static void iwl4965_down(struct iwl_priv *priv)
2420 {
2421 mutex_lock(&priv->mutex);
2422 __iwl4965_down(priv);
2423 mutex_unlock(&priv->mutex);
2424
2425 iwl_cancel_deferred_work(priv);
2426 }
2427
2428 #define MAX_HW_RESTARTS 5
2429
2430 static int __iwl4965_up(struct iwl_priv *priv)
2431 {
2432 int i;
2433 int ret;
2434
2435 if (test_bit(STATUS_EXIT_PENDING, &priv->status)) {
2436 IWL_WARNING("Exit pending; will not bring the NIC up\n");
2437 return -EIO;
2438 }
2439
2440 if (!priv->ucode_data_backup.v_addr || !priv->ucode_data.v_addr) {
2441 IWL_ERROR("ucode not available for device bringup\n");
2442 return -EIO;
2443 }
2444
2445 /* If platform's RF_KILL switch is NOT set to KILL */
2446 if (iwl_read32(priv, CSR_GP_CNTRL) &
2447 CSR_GP_CNTRL_REG_FLAG_HW_RF_KILL_SW)
2448 clear_bit(STATUS_RF_KILL_HW, &priv->status);
2449 else {
2450 set_bit(STATUS_RF_KILL_HW, &priv->status);
2451 if (!test_bit(STATUS_IN_SUSPEND, &priv->status)) {
2452 iwl_rfkill_set_hw_state(priv);
2453 IWL_WARNING("Radio disabled by HW RF Kill switch\n");
2454 return -ENODEV;
2455 }
2456 }
2457
2458 iwl_rfkill_set_hw_state(priv);
2459 iwl_write32(priv, CSR_INT, 0xFFFFFFFF);
2460
2461 ret = priv->cfg->ops->lib->alloc_shared_mem(priv);
2462 if (ret) {
2463 IWL_ERROR("Unable to allocate shared memory\n");
2464 return ret;
2465 }
2466
2467 ret = iwl_hw_nic_init(priv);
2468 if (ret) {
2469 IWL_ERROR("Unable to init nic\n");
2470 return ret;
2471 }
2472
2473 /* make sure rfkill handshake bits are cleared */
2474 iwl_write32(priv, CSR_UCODE_DRV_GP1_CLR, CSR_UCODE_SW_BIT_RFKILL);
2475 iwl_write32(priv, CSR_UCODE_DRV_GP1_CLR,
2476 CSR_UCODE_DRV_GP1_BIT_CMD_BLOCKED);
2477
2478 /* clear (again), then enable host interrupts */
2479 iwl_write32(priv, CSR_INT, 0xFFFFFFFF);
2480 iwl4965_enable_interrupts(priv);
2481
2482 /* really make sure rfkill handshake bits are cleared */
2483 iwl_write32(priv, CSR_UCODE_DRV_GP1_CLR, CSR_UCODE_SW_BIT_RFKILL);
2484 iwl_write32(priv, CSR_UCODE_DRV_GP1_CLR, CSR_UCODE_SW_BIT_RFKILL);
2485
2486 /* Copy original ucode data image from disk into backup cache.
2487 * This will be used to initialize the on-board processor's
2488 * data SRAM for a clean start when the runtime program first loads. */
2489 memcpy(priv->ucode_data_backup.v_addr, priv->ucode_data.v_addr,
2490 priv->ucode_data.len);
2491
2492 /* We return success when we resume from suspend and rf_kill is on. */
2493 if (test_bit(STATUS_RF_KILL_HW, &priv->status) ||
2494 test_bit(STATUS_RF_KILL_SW, &priv->status))
2495 return 0;
2496
2497 for (i = 0; i < MAX_HW_RESTARTS; i++) {
2498
2499 iwlcore_clear_stations_table(priv);
2500
2501 /* load bootstrap state machine,
2502 * load bootstrap program into processor's memory,
2503 * prepare to load the "initialize" uCode */
2504 ret = priv->cfg->ops->lib->load_ucode(priv);
2505
2506 if (ret) {
2507 IWL_ERROR("Unable to set up bootstrap uCode: %d\n", ret);
2508 continue;
2509 }
2510
2511 /* Clear out the uCode error bit if it is set */
2512 clear_bit(STATUS_FW_ERROR, &priv->status);
2513
2514 /* start card; "initialize" will load runtime ucode */
2515 iwl4965_nic_start(priv);
2516
2517 IWL_DEBUG_INFO(DRV_NAME " is coming up\n");
2518
2519 return 0;
2520 }
2521
2522 set_bit(STATUS_EXIT_PENDING, &priv->status);
2523 __iwl4965_down(priv);
2524 clear_bit(STATUS_EXIT_PENDING, &priv->status);
2525
2526 /* tried to restart and config the device for as long as our
2527 * patience could withstand */
2528 IWL_ERROR("Unable to initialize device after %d attempts.\n", i);
2529 return -EIO;
2530 }
2531
2532
2533 /*****************************************************************************
2534 *
2535 * Workqueue callbacks
2536 *
2537 *****************************************************************************/
2538
2539 static void iwl_bg_init_alive_start(struct work_struct *data)
2540 {
2541 struct iwl_priv *priv =
2542 container_of(data, struct iwl_priv, init_alive_start.work);
2543
2544 if (test_bit(STATUS_EXIT_PENDING, &priv->status))
2545 return;
2546
2547 mutex_lock(&priv->mutex);
2548 priv->cfg->ops->lib->init_alive_start(priv);
2549 mutex_unlock(&priv->mutex);
2550 }
2551
2552 static void iwl_bg_alive_start(struct work_struct *data)
2553 {
2554 struct iwl_priv *priv =
2555 container_of(data, struct iwl_priv, alive_start.work);
2556
2557 if (test_bit(STATUS_EXIT_PENDING, &priv->status))
2558 return;
2559
2560 mutex_lock(&priv->mutex);
2561 iwl_alive_start(priv);
2562 mutex_unlock(&priv->mutex);
2563 }
2564
2565 static void iwl4965_bg_rf_kill(struct work_struct *work)
2566 {
2567 struct iwl_priv *priv = container_of(work, struct iwl_priv, rf_kill);
2568
2569 wake_up_interruptible(&priv->wait_command_queue);
2570
2571 if (test_bit(STATUS_EXIT_PENDING, &priv->status))
2572 return;
2573
2574 mutex_lock(&priv->mutex);
2575
2576 if (!iwl_is_rfkill(priv)) {
2577 IWL_DEBUG(IWL_DL_RF_KILL,
2578 "HW and/or SW RF Kill no longer active, restarting "
2579 "device\n");
2580 if (!test_bit(STATUS_EXIT_PENDING, &priv->status))
2581 queue_work(priv->workqueue, &priv->restart);
2582 } else {
2583 /* make sure mac80211 stop sending Tx frame */
2584 if (priv->mac80211_registered)
2585 ieee80211_stop_queues(priv->hw);
2586
2587 if (!test_bit(STATUS_RF_KILL_HW, &priv->status))
2588 IWL_DEBUG_RF_KILL("Can not turn radio back on - "
2589 "disabled by SW switch\n");
2590 else
2591 IWL_WARNING("Radio Frequency Kill Switch is On:\n"
2592 "Kill switch must be turned off for "
2593 "wireless networking to work.\n");
2594 }
2595 iwl_rfkill_set_hw_state(priv);
2596
2597 mutex_unlock(&priv->mutex);
2598 }
2599
2600 static void iwl4965_bg_set_monitor(struct work_struct *work)
2601 {
2602 struct iwl_priv *priv = container_of(work,
2603 struct iwl_priv, set_monitor);
2604 int ret;
2605
2606 IWL_DEBUG(IWL_DL_STATE, "setting monitor mode\n");
2607
2608 mutex_lock(&priv->mutex);
2609
2610 ret = iwl4965_set_mode(priv, IEEE80211_IF_TYPE_MNTR);
2611
2612 if (ret) {
2613 if (ret == -EAGAIN)
2614 IWL_DEBUG(IWL_DL_STATE, "leave - not ready\n");
2615 else
2616 IWL_ERROR("iwl4965_set_mode() failed ret = %d\n", ret);
2617 }
2618
2619 mutex_unlock(&priv->mutex);
2620 }
2621
2622 static void iwl_bg_run_time_calib_work(struct work_struct *work)
2623 {
2624 struct iwl_priv *priv = container_of(work, struct iwl_priv,
2625 run_time_calib_work);
2626
2627 mutex_lock(&priv->mutex);
2628
2629 if (test_bit(STATUS_EXIT_PENDING, &priv->status) ||
2630 test_bit(STATUS_SCANNING, &priv->status)) {
2631 mutex_unlock(&priv->mutex);
2632 return;
2633 }
2634
2635 if (priv->start_calib) {
2636 iwl_chain_noise_calibration(priv, &priv->statistics);
2637
2638 iwl_sensitivity_calibration(priv, &priv->statistics);
2639 }
2640
2641 mutex_unlock(&priv->mutex);
2642 return;
2643 }
2644
2645 static void iwl4965_bg_up(struct work_struct *data)
2646 {
2647 struct iwl_priv *priv = container_of(data, struct iwl_priv, up);
2648
2649 if (test_bit(STATUS_EXIT_PENDING, &priv->status))
2650 return;
2651
2652 mutex_lock(&priv->mutex);
2653 __iwl4965_up(priv);
2654 mutex_unlock(&priv->mutex);
2655 }
2656
2657 static void iwl4965_bg_restart(struct work_struct *data)
2658 {
2659 struct iwl_priv *priv = container_of(data, struct iwl_priv, restart);
2660
2661 if (test_bit(STATUS_EXIT_PENDING, &priv->status))
2662 return;
2663
2664 iwl4965_down(priv);
2665 queue_work(priv->workqueue, &priv->up);
2666 }
2667
2668 static void iwl4965_bg_rx_replenish(struct work_struct *data)
2669 {
2670 struct iwl_priv *priv =
2671 container_of(data, struct iwl_priv, rx_replenish);
2672
2673 if (test_bit(STATUS_EXIT_PENDING, &priv->status))
2674 return;
2675
2676 mutex_lock(&priv->mutex);
2677 iwl_rx_replenish(priv);
2678 mutex_unlock(&priv->mutex);
2679 }
2680
2681 #define IWL_DELAY_NEXT_SCAN (HZ*2)
2682
2683 static void iwl4965_post_associate(struct iwl_priv *priv)
2684 {
2685 struct ieee80211_conf *conf = NULL;
2686 int ret = 0;
2687 DECLARE_MAC_BUF(mac);
2688
2689 if (priv->iw_mode == IEEE80211_IF_TYPE_AP) {
2690 IWL_ERROR("%s Should not be called in AP mode\n", __FUNCTION__);
2691 return;
2692 }
2693
2694 IWL_DEBUG_ASSOC("Associated as %d to: %s\n",
2695 priv->assoc_id,
2696 print_mac(mac, priv->active_rxon.bssid_addr));
2697
2698
2699 if (test_bit(STATUS_EXIT_PENDING, &priv->status))
2700 return;
2701
2702
2703 if (!priv->vif || !priv->is_open)
2704 return;
2705
2706 iwl_scan_cancel_timeout(priv, 200);
2707
2708 conf = ieee80211_get_hw_conf(priv->hw);
2709
2710 priv->staging_rxon.filter_flags &= ~RXON_FILTER_ASSOC_MSK;
2711 iwl4965_commit_rxon(priv);
2712
2713 memset(&priv->rxon_timing, 0, sizeof(struct iwl4965_rxon_time_cmd));
2714 iwl4965_setup_rxon_timing(priv);
2715 ret = iwl_send_cmd_pdu(priv, REPLY_RXON_TIMING,
2716 sizeof(priv->rxon_timing), &priv->rxon_timing);
2717 if (ret)
2718 IWL_WARNING("REPLY_RXON_TIMING failed - "
2719 "Attempting to continue.\n");
2720
2721 priv->staging_rxon.filter_flags |= RXON_FILTER_ASSOC_MSK;
2722
2723 if (priv->current_ht_config.is_ht)
2724 iwl_set_rxon_ht(priv, &priv->current_ht_config);
2725
2726 iwl_set_rxon_chain(priv);
2727 priv->staging_rxon.assoc_id = cpu_to_le16(priv->assoc_id);
2728
2729 IWL_DEBUG_ASSOC("assoc id %d beacon interval %d\n",
2730 priv->assoc_id, priv->beacon_int);
2731
2732 if (priv->assoc_capability & WLAN_CAPABILITY_SHORT_PREAMBLE)
2733 priv->staging_rxon.flags |= RXON_FLG_SHORT_PREAMBLE_MSK;
2734 else
2735 priv->staging_rxon.flags &= ~RXON_FLG_SHORT_PREAMBLE_MSK;
2736
2737 if (priv->staging_rxon.flags & RXON_FLG_BAND_24G_MSK) {
2738 if (priv->assoc_capability & WLAN_CAPABILITY_SHORT_SLOT_TIME)
2739 priv->staging_rxon.flags |= RXON_FLG_SHORT_SLOT_MSK;
2740 else
2741 priv->staging_rxon.flags &= ~RXON_FLG_SHORT_SLOT_MSK;
2742
2743 if (priv->iw_mode == IEEE80211_IF_TYPE_IBSS)
2744 priv->staging_rxon.flags &= ~RXON_FLG_SHORT_SLOT_MSK;
2745
2746 }
2747
2748 iwl4965_commit_rxon(priv);
2749
2750 switch (priv->iw_mode) {
2751 case IEEE80211_IF_TYPE_STA:
2752 iwl4965_rate_scale_init(priv->hw, IWL_AP_ID);
2753 break;
2754
2755 case IEEE80211_IF_TYPE_IBSS:
2756
2757 /* assume default assoc id */
2758 priv->assoc_id = 1;
2759
2760 iwl_rxon_add_station(priv, priv->bssid, 0);
2761 iwl4965_rate_scale_init(priv->hw, IWL_STA_ID);
2762 iwl4965_send_beacon_cmd(priv);
2763
2764 break;
2765
2766 default:
2767 IWL_ERROR("%s Should not be called in %d mode\n",
2768 __FUNCTION__, priv->iw_mode);
2769 break;
2770 }
2771
2772 iwl4965_sequence_reset(priv);
2773
2774 /* Enable Rx differential gain and sensitivity calibrations */
2775 iwl_chain_noise_reset(priv);
2776 priv->start_calib = 1;
2777
2778 if (priv->iw_mode == IEEE80211_IF_TYPE_IBSS)
2779 priv->assoc_station_added = 1;
2780
2781 iwl4965_activate_qos(priv, 0);
2782
2783 iwl_power_update_mode(priv, 0);
2784 /* we have just associated, don't start scan too early */
2785 priv->next_scan_jiffies = jiffies + IWL_DELAY_NEXT_SCAN;
2786 }
2787
2788
2789 static void iwl4965_bg_post_associate(struct work_struct *data)
2790 {
2791 struct iwl_priv *priv = container_of(data, struct iwl_priv,
2792 post_associate.work);
2793
2794 mutex_lock(&priv->mutex);
2795 iwl4965_post_associate(priv);
2796 mutex_unlock(&priv->mutex);
2797
2798 }
2799
2800 static int iwl4965_mac_config(struct ieee80211_hw *hw, struct ieee80211_conf *conf);
2801
2802 static void iwl_bg_scan_completed(struct work_struct *work)
2803 {
2804 struct iwl_priv *priv =
2805 container_of(work, struct iwl_priv, scan_completed);
2806
2807 IWL_DEBUG_SCAN("SCAN complete scan\n");
2808
2809 if (test_bit(STATUS_EXIT_PENDING, &priv->status))
2810 return;
2811
2812 if (test_bit(STATUS_CONF_PENDING, &priv->status))
2813 iwl4965_mac_config(priv->hw, ieee80211_get_hw_conf(priv->hw));
2814
2815 ieee80211_scan_completed(priv->hw);
2816
2817 /* Since setting the TXPOWER may have been deferred while
2818 * performing the scan, fire one off */
2819 mutex_lock(&priv->mutex);
2820 iwl_set_tx_power(priv, priv->tx_power_user_lmt, true);
2821 mutex_unlock(&priv->mutex);
2822 }
2823
2824 /*****************************************************************************
2825 *
2826 * mac80211 entry point functions
2827 *
2828 *****************************************************************************/
2829
2830 #define UCODE_READY_TIMEOUT (2 * HZ)
2831
2832 static int iwl4965_mac_start(struct ieee80211_hw *hw)
2833 {
2834 struct iwl_priv *priv = hw->priv;
2835 int ret;
2836
2837 IWL_DEBUG_MAC80211("enter\n");
2838
2839 if (pci_enable_device(priv->pci_dev)) {
2840 IWL_ERROR("Fail to pci_enable_device\n");
2841 return -ENODEV;
2842 }
2843 pci_restore_state(priv->pci_dev);
2844 pci_enable_msi(priv->pci_dev);
2845
2846 ret = request_irq(priv->pci_dev->irq, iwl4965_isr, IRQF_SHARED,
2847 DRV_NAME, priv);
2848 if (ret) {
2849 IWL_ERROR("Error allocating IRQ %d\n", priv->pci_dev->irq);
2850 goto out_disable_msi;
2851 }
2852
2853 /* we should be verifying the device is ready to be opened */
2854 mutex_lock(&priv->mutex);
2855
2856 memset(&priv->staging_rxon, 0, sizeof(struct iwl_rxon_cmd));
2857 /* fetch ucode file from disk, alloc and copy to bus-master buffers ...
2858 * ucode filename and max sizes are card-specific. */
2859
2860 if (!priv->ucode_code.len) {
2861 ret = iwl4965_read_ucode(priv);
2862 if (ret) {
2863 IWL_ERROR("Could not read microcode: %d\n", ret);
2864 mutex_unlock(&priv->mutex);
2865 goto out_release_irq;
2866 }
2867 }
2868
2869 ret = __iwl4965_up(priv);
2870
2871 mutex_unlock(&priv->mutex);
2872
2873 if (ret)
2874 goto out_release_irq;
2875
2876 IWL_DEBUG_INFO("Start UP work done.\n");
2877
2878 if (test_bit(STATUS_IN_SUSPEND, &priv->status))
2879 return 0;
2880
2881 /* Wait for START_ALIVE from Run Time ucode. Otherwise callbacks from
2882 * mac80211 will not be run successfully. */
2883 if (priv->ucode_type == UCODE_RT) {
2884 ret = wait_event_interruptible_timeout(priv->wait_command_queue,
2885 test_bit(STATUS_READY, &priv->status),
2886 UCODE_READY_TIMEOUT);
2887 if (!ret) {
2888 if (!test_bit(STATUS_READY, &priv->status)) {
2889 IWL_ERROR("START_ALIVE timeout after %dms.\n",
2890 jiffies_to_msecs(UCODE_READY_TIMEOUT));
2891 ret = -ETIMEDOUT;
2892 goto out_release_irq;
2893 }
2894 }
2895
2896 priv->is_open = 1;
2897 }
2898 IWL_DEBUG_MAC80211("leave\n");
2899 return 0;
2900
2901 out_release_irq:
2902 free_irq(priv->pci_dev->irq, priv);
2903 out_disable_msi:
2904 pci_disable_msi(priv->pci_dev);
2905 pci_disable_device(priv->pci_dev);
2906 priv->is_open = 0;
2907 IWL_DEBUG_MAC80211("leave - failed\n");
2908 return ret;
2909 }
2910
2911 static void iwl4965_mac_stop(struct ieee80211_hw *hw)
2912 {
2913 struct iwl_priv *priv = hw->priv;
2914
2915 IWL_DEBUG_MAC80211("enter\n");
2916
2917 if (!priv->is_open) {
2918 IWL_DEBUG_MAC80211("leave - skip\n");
2919 return;
2920 }
2921
2922 priv->is_open = 0;
2923
2924 if (iwl_is_ready_rf(priv)) {
2925 /* stop mac, cancel any scan request and clear
2926 * RXON_FILTER_ASSOC_MSK BIT
2927 */
2928 mutex_lock(&priv->mutex);
2929 iwl_scan_cancel_timeout(priv, 100);
2930 cancel_delayed_work(&priv->post_associate);
2931 mutex_unlock(&priv->mutex);
2932 }
2933
2934 iwl4965_down(priv);
2935
2936 flush_workqueue(priv->workqueue);
2937 free_irq(priv->pci_dev->irq, priv);
2938 pci_disable_msi(priv->pci_dev);
2939 pci_save_state(priv->pci_dev);
2940 pci_disable_device(priv->pci_dev);
2941
2942 IWL_DEBUG_MAC80211("leave\n");
2943 }
2944
2945 static int iwl4965_mac_tx(struct ieee80211_hw *hw, struct sk_buff *skb)
2946 {
2947 struct iwl_priv *priv = hw->priv;
2948
2949 IWL_DEBUG_MAC80211("enter\n");
2950
2951 if (priv->iw_mode == IEEE80211_IF_TYPE_MNTR) {
2952 IWL_DEBUG_MAC80211("leave - monitor\n");
2953 return -1;
2954 }
2955
2956 IWL_DEBUG_TX("dev->xmit(%d bytes) at rate 0x%02x\n", skb->len,
2957 ieee80211_get_tx_rate(hw, IEEE80211_SKB_CB(skb))->bitrate);
2958
2959 if (iwl_tx_skb(priv, skb))
2960 dev_kfree_skb_any(skb);
2961
2962 IWL_DEBUG_MAC80211("leave\n");
2963 return 0;
2964 }
2965
2966 static int iwl4965_mac_add_interface(struct ieee80211_hw *hw,
2967 struct ieee80211_if_init_conf *conf)
2968 {
2969 struct iwl_priv *priv = hw->priv;
2970 unsigned long flags;
2971 DECLARE_MAC_BUF(mac);
2972
2973 IWL_DEBUG_MAC80211("enter: type %d\n", conf->type);
2974
2975 if (priv->vif) {
2976 IWL_DEBUG_MAC80211("leave - vif != NULL\n");
2977 return -EOPNOTSUPP;
2978 }
2979
2980 spin_lock_irqsave(&priv->lock, flags);
2981 priv->vif = conf->vif;
2982
2983 spin_unlock_irqrestore(&priv->lock, flags);
2984
2985 mutex_lock(&priv->mutex);
2986
2987 if (conf->mac_addr) {
2988 IWL_DEBUG_MAC80211("Set %s\n", print_mac(mac, conf->mac_addr));
2989 memcpy(priv->mac_addr, conf->mac_addr, ETH_ALEN);
2990 }
2991
2992 if (iwl4965_set_mode(priv, conf->type) == -EAGAIN)
2993 /* we are not ready, will run again when ready */
2994 set_bit(STATUS_MODE_PENDING, &priv->status);
2995
2996 mutex_unlock(&priv->mutex);
2997
2998 IWL_DEBUG_MAC80211("leave\n");
2999 return 0;
3000 }
3001
3002 /**
3003 * iwl4965_mac_config - mac80211 config callback
3004 *
3005 * We ignore conf->flags & IEEE80211_CONF_SHORT_SLOT_TIME since it seems to
3006 * be set inappropriately and the driver currently sets the hardware up to
3007 * use it whenever needed.
3008 */
3009 static int iwl4965_mac_config(struct ieee80211_hw *hw, struct ieee80211_conf *conf)
3010 {
3011 struct iwl_priv *priv = hw->priv;
3012 const struct iwl_channel_info *ch_info;
3013 unsigned long flags;
3014 int ret = 0;
3015 u16 channel;
3016
3017 mutex_lock(&priv->mutex);
3018 IWL_DEBUG_MAC80211("enter to channel %d\n", conf->channel->hw_value);
3019
3020 priv->add_radiotap = !!(conf->flags & IEEE80211_CONF_RADIOTAP);
3021
3022
3023 if (priv->cfg->ops->lib->radio_kill_sw &&
3024 priv->cfg->ops->lib->radio_kill_sw(priv, !conf->radio_enabled)) {
3025 IWL_DEBUG_MAC80211("leave - RF-KILL - waiting for uCode\n");
3026 mutex_unlock(&priv->mutex);
3027 }
3028
3029 if (!iwl_is_ready(priv)) {
3030 IWL_DEBUG_MAC80211("leave - not ready\n");
3031 ret = -EIO;
3032 goto out;
3033 }
3034
3035 if (unlikely(!priv->cfg->mod_params->disable_hw_scan &&
3036 test_bit(STATUS_SCANNING, &priv->status))) {
3037 IWL_DEBUG_MAC80211("leave - scanning\n");
3038 set_bit(STATUS_CONF_PENDING, &priv->status);
3039 mutex_unlock(&priv->mutex);
3040 return 0;
3041 }
3042
3043 channel = ieee80211_frequency_to_channel(conf->channel->center_freq);
3044 ch_info = iwl_get_channel_info(priv, conf->channel->band, channel);
3045 if (!is_channel_valid(ch_info)) {
3046 IWL_DEBUG_MAC80211("leave - invalid channel\n");
3047 ret = -EINVAL;
3048 goto out;
3049 }
3050
3051 if (priv->iw_mode == IEEE80211_IF_TYPE_IBSS &&
3052 !is_channel_ibss(ch_info)) {
3053 IWL_ERROR("channel %d in band %d not IBSS channel\n",
3054 conf->channel->hw_value, conf->channel->band);
3055 ret = -EINVAL;
3056 goto out;
3057 }
3058
3059 spin_lock_irqsave(&priv->lock, flags);
3060
3061 /* if we are switching from ht to 2.4 clear flags
3062 * from any ht related info since 2.4 does not
3063 * support ht */
3064 if ((le16_to_cpu(priv->staging_rxon.channel) != channel)
3065 #ifdef IEEE80211_CONF_CHANNEL_SWITCH
3066 && !(conf->flags & IEEE80211_CONF_CHANNEL_SWITCH)
3067 #endif
3068 )
3069 priv->staging_rxon.flags = 0;
3070
3071 iwl_set_rxon_channel(priv, conf->channel->band, channel);
3072
3073 iwl_set_flags_for_band(priv, conf->channel->band);
3074
3075 /* The list of supported rates and rate mask can be different
3076 * for each band; since the band may have changed, reset
3077 * the rate mask to what mac80211 lists */
3078 iwl4965_set_rate(priv);
3079
3080 spin_unlock_irqrestore(&priv->lock, flags);
3081
3082 #ifdef IEEE80211_CONF_CHANNEL_SWITCH
3083 if (conf->flags & IEEE80211_CONF_CHANNEL_SWITCH) {
3084 iwl4965_hw_channel_switch(priv, conf->channel);
3085 goto out;
3086 }
3087 #endif
3088
3089 if (!conf->radio_enabled) {
3090 IWL_DEBUG_MAC80211("leave - radio disabled\n");
3091 goto out;
3092 }
3093
3094 if (iwl_is_rfkill(priv)) {
3095 IWL_DEBUG_MAC80211("leave - RF kill\n");
3096 ret = -EIO;
3097 goto out;
3098 }
3099
3100 IWL_DEBUG_MAC80211("TX Power old=%d new=%d\n",
3101 priv->tx_power_user_lmt, conf->power_level);
3102
3103 iwl_set_tx_power(priv, conf->power_level, false);
3104
3105 iwl4965_set_rate(priv);
3106
3107 if (memcmp(&priv->active_rxon,
3108 &priv->staging_rxon, sizeof(priv->staging_rxon)))
3109 iwl4965_commit_rxon(priv);
3110 else
3111 IWL_DEBUG_INFO("No re-sending same RXON configuration.\n");
3112
3113 IWL_DEBUG_MAC80211("leave\n");
3114
3115 out:
3116 clear_bit(STATUS_CONF_PENDING, &priv->status);
3117 mutex_unlock(&priv->mutex);
3118 return ret;
3119 }
3120
3121 static void iwl4965_config_ap(struct iwl_priv *priv)
3122 {
3123 int ret = 0;
3124
3125 if (test_bit(STATUS_EXIT_PENDING, &priv->status))
3126 return;
3127
3128 /* The following should be done only at AP bring up */
3129 if ((priv->active_rxon.filter_flags & RXON_FILTER_ASSOC_MSK) == 0) {
3130
3131 /* RXON - unassoc (to set timing command) */
3132 priv->staging_rxon.filter_flags &= ~RXON_FILTER_ASSOC_MSK;
3133 iwl4965_commit_rxon(priv);
3134
3135 /* RXON Timing */
3136 memset(&priv->rxon_timing, 0, sizeof(struct iwl4965_rxon_time_cmd));
3137 iwl4965_setup_rxon_timing(priv);
3138 ret = iwl_send_cmd_pdu(priv, REPLY_RXON_TIMING,
3139 sizeof(priv->rxon_timing), &priv->rxon_timing);
3140 if (ret)
3141 IWL_WARNING("REPLY_RXON_TIMING failed - "
3142 "Attempting to continue.\n");
3143
3144 iwl_set_rxon_chain(priv);
3145
3146 /* FIXME: what should be the assoc_id for AP? */
3147 priv->staging_rxon.assoc_id = cpu_to_le16(priv->assoc_id);
3148 if (priv->assoc_capability & WLAN_CAPABILITY_SHORT_PREAMBLE)
3149 priv->staging_rxon.flags |=
3150 RXON_FLG_SHORT_PREAMBLE_MSK;
3151 else
3152 priv->staging_rxon.flags &=
3153 ~RXON_FLG_SHORT_PREAMBLE_MSK;
3154
3155 if (priv->staging_rxon.flags & RXON_FLG_BAND_24G_MSK) {
3156 if (priv->assoc_capability &
3157 WLAN_CAPABILITY_SHORT_SLOT_TIME)
3158 priv->staging_rxon.flags |=
3159 RXON_FLG_SHORT_SLOT_MSK;
3160 else
3161 priv->staging_rxon.flags &=
3162 ~RXON_FLG_SHORT_SLOT_MSK;
3163
3164 if (priv->iw_mode == IEEE80211_IF_TYPE_IBSS)
3165 priv->staging_rxon.flags &=
3166 ~RXON_FLG_SHORT_SLOT_MSK;
3167 }
3168 /* restore RXON assoc */
3169 priv->staging_rxon.filter_flags |= RXON_FILTER_ASSOC_MSK;
3170 iwl4965_commit_rxon(priv);
3171 iwl4965_activate_qos(priv, 1);
3172 iwl_rxon_add_station(priv, iwl_bcast_addr, 0);
3173 }
3174 iwl4965_send_beacon_cmd(priv);
3175
3176 /* FIXME - we need to add code here to detect a totally new
3177 * configuration, reset the AP, unassoc, rxon timing, assoc,
3178 * clear sta table, add BCAST sta... */
3179 }
3180
3181 static int iwl4965_mac_config_interface(struct ieee80211_hw *hw,
3182 struct ieee80211_vif *vif,
3183 struct ieee80211_if_conf *conf)
3184 {
3185 struct iwl_priv *priv = hw->priv;
3186 DECLARE_MAC_BUF(mac);
3187 unsigned long flags;
3188 int rc;
3189
3190 if (conf == NULL)
3191 return -EIO;
3192
3193 if (priv->vif != vif) {
3194 IWL_DEBUG_MAC80211("leave - priv->vif != vif\n");
3195 return 0;
3196 }
3197
3198 if ((priv->iw_mode == IEEE80211_IF_TYPE_AP) &&
3199 (!conf->beacon || !conf->ssid_len)) {
3200 IWL_DEBUG_MAC80211
3201 ("Leaving in AP mode because HostAPD is not ready.\n");
3202 return 0;
3203 }
3204
3205 if (!iwl_is_alive(priv))
3206 return -EAGAIN;
3207
3208 mutex_lock(&priv->mutex);
3209
3210 if (conf->bssid)
3211 IWL_DEBUG_MAC80211("bssid: %s\n",
3212 print_mac(mac, conf->bssid));
3213
3214 /*
3215 * very dubious code was here; the probe filtering flag is never set:
3216 *
3217 if (unlikely(test_bit(STATUS_SCANNING, &priv->status)) &&
3218 !(priv->hw->flags & IEEE80211_HW_NO_PROBE_FILTERING)) {
3219 */
3220
3221 if (priv->iw_mode == IEEE80211_IF_TYPE_AP) {
3222 if (!conf->bssid) {
3223 conf->bssid = priv->mac_addr;
3224 memcpy(priv->bssid, priv->mac_addr, ETH_ALEN);
3225 IWL_DEBUG_MAC80211("bssid was set to: %s\n",
3226 print_mac(mac, conf->bssid));
3227 }
3228 if (priv->ibss_beacon)
3229 dev_kfree_skb(priv->ibss_beacon);
3230
3231 priv->ibss_beacon = conf->beacon;
3232 }
3233
3234 if (iwl_is_rfkill(priv))
3235 goto done;
3236
3237 if (conf->bssid && !is_zero_ether_addr(conf->bssid) &&
3238 !is_multicast_ether_addr(conf->bssid)) {
3239 /* If there is currently a HW scan going on in the background
3240 * then we need to cancel it else the RXON below will fail. */
3241 if (iwl_scan_cancel_timeout(priv, 100)) {
3242 IWL_WARNING("Aborted scan still in progress "
3243 "after 100ms\n");
3244 IWL_DEBUG_MAC80211("leaving - scan abort failed.\n");
3245 mutex_unlock(&priv->mutex);
3246 return -EAGAIN;
3247 }
3248 memcpy(priv->staging_rxon.bssid_addr, conf->bssid, ETH_ALEN);
3249
3250 /* TODO: Audit driver for usage of these members and see
3251 * if mac80211 deprecates them (priv->bssid looks like it
3252 * shouldn't be there, but I haven't scanned the IBSS code
3253 * to verify) - jpk */
3254 memcpy(priv->bssid, conf->bssid, ETH_ALEN);
3255
3256 if (priv->iw_mode == IEEE80211_IF_TYPE_AP)
3257 iwl4965_config_ap(priv);
3258 else {
3259 rc = iwl4965_commit_rxon(priv);
3260 if ((priv->iw_mode == IEEE80211_IF_TYPE_STA) && rc)
3261 iwl_rxon_add_station(
3262 priv, priv->active_rxon.bssid_addr, 1);
3263 }
3264
3265 } else {
3266 iwl_scan_cancel_timeout(priv, 100);
3267 priv->staging_rxon.filter_flags &= ~RXON_FILTER_ASSOC_MSK;
3268 iwl4965_commit_rxon(priv);
3269 }
3270
3271 done:
3272 spin_lock_irqsave(&priv->lock, flags);
3273 if (!conf->ssid_len)
3274 memset(priv->essid, 0, IW_ESSID_MAX_SIZE);
3275 else
3276 memcpy(priv->essid, conf->ssid, conf->ssid_len);
3277
3278 priv->essid_len = conf->ssid_len;
3279 spin_unlock_irqrestore(&priv->lock, flags);
3280
3281 IWL_DEBUG_MAC80211("leave\n");
3282 mutex_unlock(&priv->mutex);
3283
3284 return 0;
3285 }
3286
3287 static void iwl4965_configure_filter(struct ieee80211_hw *hw,
3288 unsigned int changed_flags,
3289 unsigned int *total_flags,
3290 int mc_count, struct dev_addr_list *mc_list)
3291 {
3292 /*
3293 * XXX: dummy
3294 * see also iwl4965_connection_init_rx_config
3295 */
3296 struct iwl_priv *priv = hw->priv;
3297 int new_flags = 0;
3298 if (changed_flags & (FIF_PROMISC_IN_BSS | FIF_OTHER_BSS)) {
3299 if (*total_flags & (FIF_PROMISC_IN_BSS | FIF_OTHER_BSS)) {
3300 IWL_DEBUG_MAC80211("Enter: type %d (0x%x, 0x%x)\n",
3301 IEEE80211_IF_TYPE_MNTR,
3302 changed_flags, *total_flags);
3303 /* queue work 'cuz mac80211 is holding a lock which
3304 * prevents us from issuing (synchronous) f/w cmds */
3305 queue_work(priv->workqueue, &priv->set_monitor);
3306 new_flags &= FIF_PROMISC_IN_BSS |
3307 FIF_OTHER_BSS |
3308 FIF_ALLMULTI;
3309 }
3310 }
3311 *total_flags = new_flags;
3312 }
3313
3314 static void iwl4965_mac_remove_interface(struct ieee80211_hw *hw,
3315 struct ieee80211_if_init_conf *conf)
3316 {
3317 struct iwl_priv *priv = hw->priv;
3318
3319 IWL_DEBUG_MAC80211("enter\n");
3320
3321 mutex_lock(&priv->mutex);
3322
3323 if (iwl_is_ready_rf(priv)) {
3324 iwl_scan_cancel_timeout(priv, 100);
3325 cancel_delayed_work(&priv->post_associate);
3326 priv->staging_rxon.filter_flags &= ~RXON_FILTER_ASSOC_MSK;
3327 iwl4965_commit_rxon(priv);
3328 }
3329 if (priv->vif == conf->vif) {
3330 priv->vif = NULL;
3331 memset(priv->bssid, 0, ETH_ALEN);
3332 memset(priv->essid, 0, IW_ESSID_MAX_SIZE);
3333 priv->essid_len = 0;
3334 }
3335 mutex_unlock(&priv->mutex);
3336
3337 IWL_DEBUG_MAC80211("leave\n");
3338
3339 }
3340
3341 #define IWL_DELAY_NEXT_SCAN_AFTER_ASSOC (HZ*6)
3342 static void iwl4965_bss_info_changed(struct ieee80211_hw *hw,
3343 struct ieee80211_vif *vif,
3344 struct ieee80211_bss_conf *bss_conf,
3345 u32 changes)
3346 {
3347 struct iwl_priv *priv = hw->priv;
3348
3349 IWL_DEBUG_MAC80211("changes = 0x%X\n", changes);
3350
3351 if (changes & BSS_CHANGED_ERP_PREAMBLE) {
3352 IWL_DEBUG_MAC80211("ERP_PREAMBLE %d\n",
3353 bss_conf->use_short_preamble);
3354 if (bss_conf->use_short_preamble)
3355 priv->staging_rxon.flags |= RXON_FLG_SHORT_PREAMBLE_MSK;
3356 else
3357 priv->staging_rxon.flags &= ~RXON_FLG_SHORT_PREAMBLE_MSK;
3358 }
3359
3360 if (changes & BSS_CHANGED_ERP_CTS_PROT) {
3361 IWL_DEBUG_MAC80211("ERP_CTS %d\n", bss_conf->use_cts_prot);
3362 if (bss_conf->use_cts_prot && (priv->band != IEEE80211_BAND_5GHZ))
3363 priv->staging_rxon.flags |= RXON_FLG_TGG_PROTECT_MSK;
3364 else
3365 priv->staging_rxon.flags &= ~RXON_FLG_TGG_PROTECT_MSK;
3366 }
3367
3368 if (changes & BSS_CHANGED_HT) {
3369 IWL_DEBUG_MAC80211("HT %d\n", bss_conf->assoc_ht);
3370 iwl4965_ht_conf(priv, bss_conf);
3371 iwl_set_rxon_chain(priv);
3372 }
3373
3374 if (changes & BSS_CHANGED_ASSOC) {
3375 IWL_DEBUG_MAC80211("ASSOC %d\n", bss_conf->assoc);
3376 /* This should never happen as this function should
3377 * never be called from interrupt context. */
3378 if (WARN_ON_ONCE(in_interrupt()))
3379 return;
3380 if (bss_conf->assoc) {
3381 priv->assoc_id = bss_conf->aid;
3382 priv->beacon_int = bss_conf->beacon_int;
3383 priv->timestamp = bss_conf->timestamp;
3384 priv->assoc_capability = bss_conf->assoc_capability;
3385 priv->next_scan_jiffies = jiffies +
3386 IWL_DELAY_NEXT_SCAN_AFTER_ASSOC;
3387 mutex_lock(&priv->mutex);
3388 iwl4965_post_associate(priv);
3389 mutex_unlock(&priv->mutex);
3390 } else {
3391 priv->assoc_id = 0;
3392 IWL_DEBUG_MAC80211("DISASSOC %d\n", bss_conf->assoc);
3393 }
3394 } else if (changes && iwl_is_associated(priv) && priv->assoc_id) {
3395 IWL_DEBUG_MAC80211("Associated Changes %d\n", changes);
3396 iwl_send_rxon_assoc(priv);
3397 }
3398
3399 }
3400
3401 static int iwl4965_mac_hw_scan(struct ieee80211_hw *hw, u8 *ssid, size_t len)
3402 {
3403 int rc = 0;
3404 unsigned long flags;
3405 struct iwl_priv *priv = hw->priv;
3406
3407 IWL_DEBUG_MAC80211("enter\n");
3408
3409 mutex_lock(&priv->mutex);
3410 spin_lock_irqsave(&priv->lock, flags);
3411
3412 if (!iwl_is_ready_rf(priv)) {
3413 rc = -EIO;
3414 IWL_DEBUG_MAC80211("leave - not ready or exit pending\n");
3415 goto out_unlock;
3416 }
3417
3418 if (priv->iw_mode == IEEE80211_IF_TYPE_AP) { /* APs don't scan */
3419 rc = -EIO;
3420 IWL_ERROR("ERROR: APs don't scan\n");
3421 goto out_unlock;
3422 }
3423
3424 /* we don't schedule scan within next_scan_jiffies period */
3425 if (priv->next_scan_jiffies &&
3426 time_after(priv->next_scan_jiffies, jiffies)) {
3427 rc = -EAGAIN;
3428 goto out_unlock;
3429 }
3430 /* if we just finished scan ask for delay */
3431 if (priv->last_scan_jiffies && time_after(priv->last_scan_jiffies +
3432 IWL_DELAY_NEXT_SCAN, jiffies)) {
3433 rc = -EAGAIN;
3434 goto out_unlock;
3435 }
3436 if (len) {
3437 IWL_DEBUG_SCAN("direct scan for %s [%d]\n ",
3438 iwl_escape_essid(ssid, len), (int)len);
3439
3440 priv->one_direct_scan = 1;
3441 priv->direct_ssid_len = (u8)
3442 min((u8) len, (u8) IW_ESSID_MAX_SIZE);
3443 memcpy(priv->direct_ssid, ssid, priv->direct_ssid_len);
3444 } else
3445 priv->one_direct_scan = 0;
3446
3447 rc = iwl_scan_initiate(priv);
3448
3449 IWL_DEBUG_MAC80211("leave\n");
3450
3451 out_unlock:
3452 spin_unlock_irqrestore(&priv->lock, flags);
3453 mutex_unlock(&priv->mutex);
3454
3455 return rc;
3456 }
3457
3458 static void iwl4965_mac_update_tkip_key(struct ieee80211_hw *hw,
3459 struct ieee80211_key_conf *keyconf, const u8 *addr,
3460 u32 iv32, u16 *phase1key)
3461 {
3462 struct iwl_priv *priv = hw->priv;
3463 u8 sta_id = IWL_INVALID_STATION;
3464 unsigned long flags;
3465 __le16 key_flags = 0;
3466 int i;
3467 DECLARE_MAC_BUF(mac);
3468
3469 IWL_DEBUG_MAC80211("enter\n");
3470
3471 sta_id = iwl_find_station(priv, addr);
3472 if (sta_id == IWL_INVALID_STATION) {
3473 IWL_DEBUG_MAC80211("leave - %s not in station map.\n",
3474 print_mac(mac, addr));
3475 return;
3476 }
3477
3478 iwl_scan_cancel_timeout(priv, 100);
3479
3480 key_flags |= (STA_KEY_FLG_TKIP | STA_KEY_FLG_MAP_KEY_MSK);
3481 key_flags |= cpu_to_le16(keyconf->keyidx << STA_KEY_FLG_KEYID_POS);
3482 key_flags &= ~STA_KEY_FLG_INVALID;
3483
3484 if (sta_id == priv->hw_params.bcast_sta_id)
3485 key_flags |= STA_KEY_MULTICAST_MSK;
3486
3487 spin_lock_irqsave(&priv->sta_lock, flags);
3488
3489 priv->stations[sta_id].sta.key.key_flags = key_flags;
3490 priv->stations[sta_id].sta.key.tkip_rx_tsc_byte2 = (u8) iv32;
3491
3492 for (i = 0; i < 5; i++)
3493 priv->stations[sta_id].sta.key.tkip_rx_ttak[i] =
3494 cpu_to_le16(phase1key[i]);
3495
3496 priv->stations[sta_id].sta.sta.modify_mask = STA_MODIFY_KEY_MASK;
3497 priv->stations[sta_id].sta.mode = STA_CONTROL_MODIFY_MSK;
3498
3499 iwl_send_add_sta(priv, &priv->stations[sta_id].sta, CMD_ASYNC);
3500
3501 spin_unlock_irqrestore(&priv->sta_lock, flags);
3502
3503 IWL_DEBUG_MAC80211("leave\n");
3504 }
3505
3506 static int iwl4965_mac_set_key(struct ieee80211_hw *hw, enum set_key_cmd cmd,
3507 const u8 *local_addr, const u8 *addr,
3508 struct ieee80211_key_conf *key)
3509 {
3510 struct iwl_priv *priv = hw->priv;
3511 DECLARE_MAC_BUF(mac);
3512 int ret = 0;
3513 u8 sta_id = IWL_INVALID_STATION;
3514 u8 is_default_wep_key = 0;
3515
3516 IWL_DEBUG_MAC80211("enter\n");
3517
3518 if (priv->hw_params.sw_crypto) {
3519 IWL_DEBUG_MAC80211("leave - hwcrypto disabled\n");
3520 return -EOPNOTSUPP;
3521 }
3522
3523 if (is_zero_ether_addr(addr))
3524 /* only support pairwise keys */
3525 return -EOPNOTSUPP;
3526
3527 sta_id = iwl_find_station(priv, addr);
3528 if (sta_id == IWL_INVALID_STATION) {
3529 IWL_DEBUG_MAC80211("leave - %s not in station map.\n",
3530 print_mac(mac, addr));
3531 return -EINVAL;
3532
3533 }
3534
3535 mutex_lock(&priv->mutex);
3536 iwl_scan_cancel_timeout(priv, 100);
3537 mutex_unlock(&priv->mutex);
3538
3539 /* If we are getting WEP group key and we didn't receive any key mapping
3540 * so far, we are in legacy wep mode (group key only), otherwise we are
3541 * in 1X mode.
3542 * In legacy wep mode, we use another host command to the uCode */
3543 if (key->alg == ALG_WEP && sta_id == priv->hw_params.bcast_sta_id &&
3544 priv->iw_mode != IEEE80211_IF_TYPE_AP) {
3545 if (cmd == SET_KEY)
3546 is_default_wep_key = !priv->key_mapping_key;
3547 else
3548 is_default_wep_key =
3549 (key->hw_key_idx == HW_KEY_DEFAULT);
3550 }
3551
3552 switch (cmd) {
3553 case SET_KEY:
3554 if (is_default_wep_key)
3555 ret = iwl_set_default_wep_key(priv, key);
3556 else
3557 ret = iwl_set_dynamic_key(priv, key, sta_id);
3558
3559 IWL_DEBUG_MAC80211("enable hwcrypto key\n");
3560 break;
3561 case DISABLE_KEY:
3562 if (is_default_wep_key)
3563 ret = iwl_remove_default_wep_key(priv, key);
3564 else
3565 ret = iwl_remove_dynamic_key(priv, key, sta_id);
3566
3567 IWL_DEBUG_MAC80211("disable hwcrypto key\n");
3568 break;
3569 default:
3570 ret = -EINVAL;
3571 }
3572
3573 IWL_DEBUG_MAC80211("leave\n");
3574
3575 return ret;
3576 }
3577
3578 static int iwl4965_mac_conf_tx(struct ieee80211_hw *hw, u16 queue,
3579 const struct ieee80211_tx_queue_params *params)
3580 {
3581 struct iwl_priv *priv = hw->priv;
3582 unsigned long flags;
3583 int q;
3584
3585 IWL_DEBUG_MAC80211("enter\n");
3586
3587 if (!iwl_is_ready_rf(priv)) {
3588 IWL_DEBUG_MAC80211("leave - RF not ready\n");
3589 return -EIO;
3590 }
3591
3592 if (queue >= AC_NUM) {
3593 IWL_DEBUG_MAC80211("leave - queue >= AC_NUM %d\n", queue);
3594 return 0;
3595 }
3596
3597 if (!priv->qos_data.qos_enable) {
3598 priv->qos_data.qos_active = 0;
3599 IWL_DEBUG_MAC80211("leave - qos not enabled\n");
3600 return 0;
3601 }
3602 q = AC_NUM - 1 - queue;
3603
3604 spin_lock_irqsave(&priv->lock, flags);
3605
3606 priv->qos_data.def_qos_parm.ac[q].cw_min = cpu_to_le16(params->cw_min);
3607 priv->qos_data.def_qos_parm.ac[q].cw_max = cpu_to_le16(params->cw_max);
3608 priv->qos_data.def_qos_parm.ac[q].aifsn = params->aifs;
3609 priv->qos_data.def_qos_parm.ac[q].edca_txop =
3610 cpu_to_le16((params->txop * 32));
3611
3612 priv->qos_data.def_qos_parm.ac[q].reserved1 = 0;
3613 priv->qos_data.qos_active = 1;
3614
3615 spin_unlock_irqrestore(&priv->lock, flags);
3616
3617 mutex_lock(&priv->mutex);
3618 if (priv->iw_mode == IEEE80211_IF_TYPE_AP)
3619 iwl4965_activate_qos(priv, 1);
3620 else if (priv->assoc_id && iwl_is_associated(priv))
3621 iwl4965_activate_qos(priv, 0);
3622
3623 mutex_unlock(&priv->mutex);
3624
3625 IWL_DEBUG_MAC80211("leave\n");
3626 return 0;
3627 }
3628
3629 static int iwl4965_mac_get_tx_stats(struct ieee80211_hw *hw,
3630 struct ieee80211_tx_queue_stats *stats)
3631 {
3632 struct iwl_priv *priv = hw->priv;
3633 int i, avail;
3634 struct iwl_tx_queue *txq;
3635 struct iwl_queue *q;
3636 unsigned long flags;
3637
3638 IWL_DEBUG_MAC80211("enter\n");
3639
3640 if (!iwl_is_ready_rf(priv)) {
3641 IWL_DEBUG_MAC80211("leave - RF not ready\n");
3642 return -EIO;
3643 }
3644
3645 spin_lock_irqsave(&priv->lock, flags);
3646
3647 for (i = 0; i < AC_NUM; i++) {
3648 txq = &priv->txq[i];
3649 q = &txq->q;
3650 avail = iwl_queue_space(q);
3651
3652 stats[i].len = q->n_window - avail;
3653 stats[i].limit = q->n_window - q->high_mark;
3654 stats[i].count = q->n_window;
3655
3656 }
3657 spin_unlock_irqrestore(&priv->lock, flags);
3658
3659 IWL_DEBUG_MAC80211("leave\n");
3660
3661 return 0;
3662 }
3663
3664 static int iwl4965_mac_get_stats(struct ieee80211_hw *hw,
3665 struct ieee80211_low_level_stats *stats)
3666 {
3667 struct iwl_priv *priv = hw->priv;
3668
3669 priv = hw->priv;
3670 IWL_DEBUG_MAC80211("enter\n");
3671 IWL_DEBUG_MAC80211("leave\n");
3672
3673 return 0;
3674 }
3675
3676 static u64 iwl4965_mac_get_tsf(struct ieee80211_hw *hw)
3677 {
3678 struct iwl_priv *priv;
3679
3680 priv = hw->priv;
3681 IWL_DEBUG_MAC80211("enter\n");
3682 IWL_DEBUG_MAC80211("leave\n");
3683
3684 return 0;
3685 }
3686
3687 static void iwl4965_mac_reset_tsf(struct ieee80211_hw *hw)
3688 {
3689 struct iwl_priv *priv = hw->priv;
3690 unsigned long flags;
3691
3692 mutex_lock(&priv->mutex);
3693 IWL_DEBUG_MAC80211("enter\n");
3694
3695 priv->lq_mngr.lq_ready = 0;
3696 spin_lock_irqsave(&priv->lock, flags);
3697 memset(&priv->current_ht_config, 0, sizeof(struct iwl_ht_info));
3698 spin_unlock_irqrestore(&priv->lock, flags);
3699
3700 iwl_reset_qos(priv);
3701
3702 cancel_delayed_work(&priv->post_associate);
3703
3704 spin_lock_irqsave(&priv->lock, flags);
3705 priv->assoc_id = 0;
3706 priv->assoc_capability = 0;
3707 priv->assoc_station_added = 0;
3708
3709 /* new association get rid of ibss beacon skb */
3710 if (priv->ibss_beacon)
3711 dev_kfree_skb(priv->ibss_beacon);
3712
3713 priv->ibss_beacon = NULL;
3714
3715 priv->beacon_int = priv->hw->conf.beacon_int;
3716 priv->timestamp = 0;
3717 if ((priv->iw_mode == IEEE80211_IF_TYPE_STA))
3718 priv->beacon_int = 0;
3719
3720 spin_unlock_irqrestore(&priv->lock, flags);
3721
3722 if (!iwl_is_ready_rf(priv)) {
3723 IWL_DEBUG_MAC80211("leave - not ready\n");
3724 mutex_unlock(&priv->mutex);
3725 return;
3726 }
3727
3728 /* we are restarting association process
3729 * clear RXON_FILTER_ASSOC_MSK bit
3730 */
3731 if (priv->iw_mode != IEEE80211_IF_TYPE_AP) {
3732 iwl_scan_cancel_timeout(priv, 100);
3733 priv->staging_rxon.filter_flags &= ~RXON_FILTER_ASSOC_MSK;
3734 iwl4965_commit_rxon(priv);
3735 }
3736
3737 iwl_power_update_mode(priv, 0);
3738
3739 /* Per mac80211.h: This is only used in IBSS mode... */
3740 if (priv->iw_mode != IEEE80211_IF_TYPE_IBSS) {
3741
3742 IWL_DEBUG_MAC80211("leave - not in IBSS\n");
3743 mutex_unlock(&priv->mutex);
3744 return;
3745 }
3746
3747 iwl4965_set_rate(priv);
3748
3749 mutex_unlock(&priv->mutex);
3750
3751 IWL_DEBUG_MAC80211("leave\n");
3752 }
3753
3754 static int iwl4965_mac_beacon_update(struct ieee80211_hw *hw, struct sk_buff *skb)
3755 {
3756 struct iwl_priv *priv = hw->priv;
3757 unsigned long flags;
3758
3759 mutex_lock(&priv->mutex);
3760 IWL_DEBUG_MAC80211("enter\n");
3761
3762 if (!iwl_is_ready_rf(priv)) {
3763 IWL_DEBUG_MAC80211("leave - RF not ready\n");
3764 mutex_unlock(&priv->mutex);
3765 return -EIO;
3766 }
3767
3768 if (priv->iw_mode != IEEE80211_IF_TYPE_IBSS) {
3769 IWL_DEBUG_MAC80211("leave - not IBSS\n");
3770 mutex_unlock(&priv->mutex);
3771 return -EIO;
3772 }
3773
3774 spin_lock_irqsave(&priv->lock, flags);
3775
3776 if (priv->ibss_beacon)
3777 dev_kfree_skb(priv->ibss_beacon);
3778
3779 priv->ibss_beacon = skb;
3780
3781 priv->assoc_id = 0;
3782
3783 IWL_DEBUG_MAC80211("leave\n");
3784 spin_unlock_irqrestore(&priv->lock, flags);
3785
3786 iwl_reset_qos(priv);
3787
3788 iwl4965_post_associate(priv);
3789
3790 mutex_unlock(&priv->mutex);
3791
3792 return 0;
3793 }
3794
3795 /*****************************************************************************
3796 *
3797 * sysfs attributes
3798 *
3799 *****************************************************************************/
3800
3801 #ifdef CONFIG_IWLWIFI_DEBUG
3802
3803 /*
3804 * The following adds a new attribute to the sysfs representation
3805 * of this device driver (i.e. a new file in /sys/bus/pci/drivers/iwl/)
3806 * used for controlling the debug level.
3807 *
3808 * See the level definitions in iwl for details.
3809 */
3810
3811 static ssize_t show_debug_level(struct device *d,
3812 struct device_attribute *attr, char *buf)
3813 {
3814 struct iwl_priv *priv = d->driver_data;
3815
3816 return sprintf(buf, "0x%08X\n", priv->debug_level);
3817 }
3818 static ssize_t store_debug_level(struct device *d,
3819 struct device_attribute *attr,
3820 const char *buf, size_t count)
3821 {
3822 struct iwl_priv *priv = d->driver_data;
3823 char *p = (char *)buf;
3824 u32 val;
3825
3826 val = simple_strtoul(p, &p, 0);
3827 if (p == buf)
3828 printk(KERN_INFO DRV_NAME
3829 ": %s is not in hex or decimal form.\n", buf);
3830 else
3831 priv->debug_level = val;
3832
3833 return strnlen(buf, count);
3834 }
3835
3836 static DEVICE_ATTR(debug_level, S_IWUSR | S_IRUGO,
3837 show_debug_level, store_debug_level);
3838
3839
3840 #endif /* CONFIG_IWLWIFI_DEBUG */
3841
3842
3843 static ssize_t show_version(struct device *d,
3844 struct device_attribute *attr, char *buf)
3845 {
3846 struct iwl_priv *priv = d->driver_data;
3847 struct iwl_alive_resp *palive = &priv->card_alive;
3848
3849 if (palive->is_valid)
3850 return sprintf(buf, "fw version: 0x%01X.0x%01X.0x%01X.0x%01X\n"
3851 "fw type: 0x%01X 0x%01X\n",
3852 palive->ucode_major, palive->ucode_minor,
3853 palive->sw_rev[0], palive->sw_rev[1],
3854 palive->ver_type, palive->ver_subtype);
3855
3856 else
3857 return sprintf(buf, "fw not loaded\n");
3858 }
3859
3860 static DEVICE_ATTR(version, S_IWUSR | S_IRUGO, show_version, NULL);
3861
3862 static ssize_t show_temperature(struct device *d,
3863 struct device_attribute *attr, char *buf)
3864 {
3865 struct iwl_priv *priv = (struct iwl_priv *)d->driver_data;
3866
3867 if (!iwl_is_alive(priv))
3868 return -EAGAIN;
3869
3870 return sprintf(buf, "%d\n", iwl4965_hw_get_temperature(priv));
3871 }
3872
3873 static DEVICE_ATTR(temperature, S_IRUGO, show_temperature, NULL);
3874
3875 static ssize_t show_rs_window(struct device *d,
3876 struct device_attribute *attr,
3877 char *buf)
3878 {
3879 struct iwl_priv *priv = d->driver_data;
3880 return iwl4965_fill_rs_info(priv->hw, buf, IWL_AP_ID);
3881 }
3882 static DEVICE_ATTR(rs_window, S_IRUGO, show_rs_window, NULL);
3883
3884 static ssize_t show_tx_power(struct device *d,
3885 struct device_attribute *attr, char *buf)
3886 {
3887 struct iwl_priv *priv = (struct iwl_priv *)d->driver_data;
3888 return sprintf(buf, "%d\n", priv->tx_power_user_lmt);
3889 }
3890
3891 static ssize_t store_tx_power(struct device *d,
3892 struct device_attribute *attr,
3893 const char *buf, size_t count)
3894 {
3895 struct iwl_priv *priv = (struct iwl_priv *)d->driver_data;
3896 char *p = (char *)buf;
3897 u32 val;
3898
3899 val = simple_strtoul(p, &p, 10);
3900 if (p == buf)
3901 printk(KERN_INFO DRV_NAME
3902 ": %s is not in decimal form.\n", buf);
3903 else
3904 iwl_set_tx_power(priv, val, false);
3905
3906 return count;
3907 }
3908
3909 static DEVICE_ATTR(tx_power, S_IWUSR | S_IRUGO, show_tx_power, store_tx_power);
3910
3911 static ssize_t show_flags(struct device *d,
3912 struct device_attribute *attr, char *buf)
3913 {
3914 struct iwl_priv *priv = (struct iwl_priv *)d->driver_data;
3915
3916 return sprintf(buf, "0x%04X\n", priv->active_rxon.flags);
3917 }
3918
3919 static ssize_t store_flags(struct device *d,
3920 struct device_attribute *attr,
3921 const char *buf, size_t count)
3922 {
3923 struct iwl_priv *priv = (struct iwl_priv *)d->driver_data;
3924 u32 flags = simple_strtoul(buf, NULL, 0);
3925
3926 mutex_lock(&priv->mutex);
3927 if (le32_to_cpu(priv->staging_rxon.flags) != flags) {
3928 /* Cancel any currently running scans... */
3929 if (iwl_scan_cancel_timeout(priv, 100))
3930 IWL_WARNING("Could not cancel scan.\n");
3931 else {
3932 IWL_DEBUG_INFO("Committing rxon.flags = 0x%04X\n",
3933 flags);
3934 priv->staging_rxon.flags = cpu_to_le32(flags);
3935 iwl4965_commit_rxon(priv);
3936 }
3937 }
3938 mutex_unlock(&priv->mutex);
3939
3940 return count;
3941 }
3942
3943 static DEVICE_ATTR(flags, S_IWUSR | S_IRUGO, show_flags, store_flags);
3944
3945 static ssize_t show_filter_flags(struct device *d,
3946 struct device_attribute *attr, char *buf)
3947 {
3948 struct iwl_priv *priv = (struct iwl_priv *)d->driver_data;
3949
3950 return sprintf(buf, "0x%04X\n",
3951 le32_to_cpu(priv->active_rxon.filter_flags));
3952 }
3953
3954 static ssize_t store_filter_flags(struct device *d,
3955 struct device_attribute *attr,
3956 const char *buf, size_t count)
3957 {
3958 struct iwl_priv *priv = (struct iwl_priv *)d->driver_data;
3959 u32 filter_flags = simple_strtoul(buf, NULL, 0);
3960
3961 mutex_lock(&priv->mutex);
3962 if (le32_to_cpu(priv->staging_rxon.filter_flags) != filter_flags) {
3963 /* Cancel any currently running scans... */
3964 if (iwl_scan_cancel_timeout(priv, 100))
3965 IWL_WARNING("Could not cancel scan.\n");
3966 else {
3967 IWL_DEBUG_INFO("Committing rxon.filter_flags = "
3968 "0x%04X\n", filter_flags);
3969 priv->staging_rxon.filter_flags =
3970 cpu_to_le32(filter_flags);
3971 iwl4965_commit_rxon(priv);
3972 }
3973 }
3974 mutex_unlock(&priv->mutex);
3975
3976 return count;
3977 }
3978
3979 static DEVICE_ATTR(filter_flags, S_IWUSR | S_IRUGO, show_filter_flags,
3980 store_filter_flags);
3981
3982 #ifdef CONFIG_IWL4965_SPECTRUM_MEASUREMENT
3983
3984 static ssize_t show_measurement(struct device *d,
3985 struct device_attribute *attr, char *buf)
3986 {
3987 struct iwl_priv *priv = dev_get_drvdata(d);
3988 struct iwl4965_spectrum_notification measure_report;
3989 u32 size = sizeof(measure_report), len = 0, ofs = 0;
3990 u8 *data = (u8 *) & measure_report;
3991 unsigned long flags;
3992
3993 spin_lock_irqsave(&priv->lock, flags);
3994 if (!(priv->measurement_status & MEASUREMENT_READY)) {
3995 spin_unlock_irqrestore(&priv->lock, flags);
3996 return 0;
3997 }
3998 memcpy(&measure_report, &priv->measure_report, size);
3999 priv->measurement_status = 0;
4000 spin_unlock_irqrestore(&priv->lock, flags);
4001
4002 while (size && (PAGE_SIZE - len)) {
4003 hex_dump_to_buffer(data + ofs, size, 16, 1, buf + len,
4004 PAGE_SIZE - len, 1);
4005 len = strlen(buf);
4006 if (PAGE_SIZE - len)
4007 buf[len++] = '\n';
4008
4009 ofs += 16;
4010 size -= min(size, 16U);
4011 }
4012
4013 return len;
4014 }
4015
4016 static ssize_t store_measurement(struct device *d,
4017 struct device_attribute *attr,
4018 const char *buf, size_t count)
4019 {
4020 struct iwl_priv *priv = dev_get_drvdata(d);
4021 struct ieee80211_measurement_params params = {
4022 .channel = le16_to_cpu(priv->active_rxon.channel),
4023 .start_time = cpu_to_le64(priv->last_tsf),
4024 .duration = cpu_to_le16(1),
4025 };
4026 u8 type = IWL_MEASURE_BASIC;
4027 u8 buffer[32];
4028 u8 channel;
4029
4030 if (count) {
4031 char *p = buffer;
4032 strncpy(buffer, buf, min(sizeof(buffer), count));
4033 channel = simple_strtoul(p, NULL, 0);
4034 if (channel)
4035 params.channel = channel;
4036
4037 p = buffer;
4038 while (*p && *p != ' ')
4039 p++;
4040 if (*p)
4041 type = simple_strtoul(p + 1, NULL, 0);
4042 }
4043
4044 IWL_DEBUG_INFO("Invoking measurement of type %d on "
4045 "channel %d (for '%s')\n", type, params.channel, buf);
4046 iwl4965_get_measurement(priv, &params, type);
4047
4048 return count;
4049 }
4050
4051 static DEVICE_ATTR(measurement, S_IRUSR | S_IWUSR,
4052 show_measurement, store_measurement);
4053 #endif /* CONFIG_IWL4965_SPECTRUM_MEASUREMENT */
4054
4055 static ssize_t store_retry_rate(struct device *d,
4056 struct device_attribute *attr,
4057 const char *buf, size_t count)
4058 {
4059 struct iwl_priv *priv = dev_get_drvdata(d);
4060
4061 priv->retry_rate = simple_strtoul(buf, NULL, 0);
4062 if (priv->retry_rate <= 0)
4063 priv->retry_rate = 1;
4064
4065 return count;
4066 }
4067
4068 static ssize_t show_retry_rate(struct device *d,
4069 struct device_attribute *attr, char *buf)
4070 {
4071 struct iwl_priv *priv = dev_get_drvdata(d);
4072 return sprintf(buf, "%d", priv->retry_rate);
4073 }
4074
4075 static DEVICE_ATTR(retry_rate, S_IWUSR | S_IRUSR, show_retry_rate,
4076 store_retry_rate);
4077
4078 static ssize_t store_power_level(struct device *d,
4079 struct device_attribute *attr,
4080 const char *buf, size_t count)
4081 {
4082 struct iwl_priv *priv = dev_get_drvdata(d);
4083 int rc;
4084 int mode;
4085
4086 mode = simple_strtoul(buf, NULL, 0);
4087 mutex_lock(&priv->mutex);
4088
4089 if (!iwl_is_ready(priv)) {
4090 rc = -EAGAIN;
4091 goto out;
4092 }
4093
4094 rc = iwl_power_set_user_mode(priv, mode);
4095 if (rc) {
4096 IWL_DEBUG_MAC80211("failed setting power mode.\n");
4097 goto out;
4098 }
4099 rc = count;
4100
4101 out:
4102 mutex_unlock(&priv->mutex);
4103 return rc;
4104 }
4105
4106 #define MAX_WX_STRING 80
4107
4108 /* Values are in microsecond */
4109 static const s32 timeout_duration[] = {
4110 350000,
4111 250000,
4112 75000,
4113 37000,
4114 25000,
4115 };
4116 static const s32 period_duration[] = {
4117 400000,
4118 700000,
4119 1000000,
4120 1000000,
4121 1000000
4122 };
4123
4124 static ssize_t show_power_level(struct device *d,
4125 struct device_attribute *attr, char *buf)
4126 {
4127 struct iwl_priv *priv = dev_get_drvdata(d);
4128 int level = priv->power_data.power_mode;
4129 char *p = buf;
4130
4131 p += sprintf(p, "%d ", level);
4132 switch (level) {
4133 case IWL_POWER_MODE_CAM:
4134 case IWL_POWER_AC:
4135 p += sprintf(p, "(AC)");
4136 break;
4137 case IWL_POWER_BATTERY:
4138 p += sprintf(p, "(BATTERY)");
4139 break;
4140 default:
4141 p += sprintf(p,
4142 "(Timeout %dms, Period %dms)",
4143 timeout_duration[level - 1] / 1000,
4144 period_duration[level - 1] / 1000);
4145 }
4146 /*
4147 if (!(priv->power_mode & IWL_POWER_ENABLED))
4148 p += sprintf(p, " OFF\n");
4149 else
4150 p += sprintf(p, " \n");
4151 */
4152 p += sprintf(p, " \n");
4153 return (p - buf + 1);
4154 }
4155
4156 static DEVICE_ATTR(power_level, S_IWUSR | S_IRUSR, show_power_level,
4157 store_power_level);
4158
4159 static ssize_t show_channels(struct device *d,
4160 struct device_attribute *attr, char *buf)
4161 {
4162 /* all this shit doesn't belong into sysfs anyway */
4163 return 0;
4164 }
4165
4166 static DEVICE_ATTR(channels, S_IRUSR, show_channels, NULL);
4167
4168 static ssize_t show_statistics(struct device *d,
4169 struct device_attribute *attr, char *buf)
4170 {
4171 struct iwl_priv *priv = dev_get_drvdata(d);
4172 u32 size = sizeof(struct iwl4965_notif_statistics);
4173 u32 len = 0, ofs = 0;
4174 u8 *data = (u8 *) & priv->statistics;
4175 int rc = 0;
4176
4177 if (!iwl_is_alive(priv))
4178 return -EAGAIN;
4179
4180 mutex_lock(&priv->mutex);
4181 rc = iwl_send_statistics_request(priv, 0);
4182 mutex_unlock(&priv->mutex);
4183
4184 if (rc) {
4185 len = sprintf(buf,
4186 "Error sending statistics request: 0x%08X\n", rc);
4187 return len;
4188 }
4189
4190 while (size && (PAGE_SIZE - len)) {
4191 hex_dump_to_buffer(data + ofs, size, 16, 1, buf + len,
4192 PAGE_SIZE - len, 1);
4193 len = strlen(buf);
4194 if (PAGE_SIZE - len)
4195 buf[len++] = '\n';
4196
4197 ofs += 16;
4198 size -= min(size, 16U);
4199 }
4200
4201 return len;
4202 }
4203
4204 static DEVICE_ATTR(statistics, S_IRUGO, show_statistics, NULL);
4205
4206 static ssize_t show_status(struct device *d,
4207 struct device_attribute *attr, char *buf)
4208 {
4209 struct iwl_priv *priv = (struct iwl_priv *)d->driver_data;
4210 if (!iwl_is_alive(priv))
4211 return -EAGAIN;
4212 return sprintf(buf, "0x%08x\n", (int)priv->status);
4213 }
4214
4215 static DEVICE_ATTR(status, S_IRUGO, show_status, NULL);
4216
4217 /*****************************************************************************
4218 *
4219 * driver setup and teardown
4220 *
4221 *****************************************************************************/
4222
4223 static void iwl_setup_deferred_work(struct iwl_priv *priv)
4224 {
4225 priv->workqueue = create_workqueue(DRV_NAME);
4226
4227 init_waitqueue_head(&priv->wait_command_queue);
4228
4229 INIT_WORK(&priv->up, iwl4965_bg_up);
4230 INIT_WORK(&priv->restart, iwl4965_bg_restart);
4231 INIT_WORK(&priv->rx_replenish, iwl4965_bg_rx_replenish);
4232 INIT_WORK(&priv->rf_kill, iwl4965_bg_rf_kill);
4233 INIT_WORK(&priv->beacon_update, iwl4965_bg_beacon_update);
4234 INIT_WORK(&priv->set_monitor, iwl4965_bg_set_monitor);
4235 INIT_WORK(&priv->run_time_calib_work, iwl_bg_run_time_calib_work);
4236 INIT_DELAYED_WORK(&priv->post_associate, iwl4965_bg_post_associate);
4237 INIT_DELAYED_WORK(&priv->init_alive_start, iwl_bg_init_alive_start);
4238 INIT_DELAYED_WORK(&priv->alive_start, iwl_bg_alive_start);
4239
4240 /* FIXME : remove when resolved PENDING */
4241 INIT_WORK(&priv->scan_completed, iwl_bg_scan_completed);
4242 iwl_setup_scan_deferred_work(priv);
4243
4244 if (priv->cfg->ops->lib->setup_deferred_work)
4245 priv->cfg->ops->lib->setup_deferred_work(priv);
4246
4247 init_timer(&priv->statistics_periodic);
4248 priv->statistics_periodic.data = (unsigned long)priv;
4249 priv->statistics_periodic.function = iwl4965_bg_statistics_periodic;
4250
4251 tasklet_init(&priv->irq_tasklet, (void (*)(unsigned long))
4252 iwl4965_irq_tasklet, (unsigned long)priv);
4253 }
4254
4255 static void iwl_cancel_deferred_work(struct iwl_priv *priv)
4256 {
4257 if (priv->cfg->ops->lib->cancel_deferred_work)
4258 priv->cfg->ops->lib->cancel_deferred_work(priv);
4259
4260 cancel_delayed_work_sync(&priv->init_alive_start);
4261 cancel_delayed_work(&priv->scan_check);
4262 cancel_delayed_work(&priv->alive_start);
4263 cancel_delayed_work(&priv->post_associate);
4264 cancel_work_sync(&priv->beacon_update);
4265 del_timer_sync(&priv->statistics_periodic);
4266 }
4267
4268 static struct attribute *iwl4965_sysfs_entries[] = {
4269 &dev_attr_channels.attr,
4270 &dev_attr_flags.attr,
4271 &dev_attr_filter_flags.attr,
4272 #ifdef CONFIG_IWL4965_SPECTRUM_MEASUREMENT
4273 &dev_attr_measurement.attr,
4274 #endif
4275 &dev_attr_power_level.attr,
4276 &dev_attr_retry_rate.attr,
4277 &dev_attr_rs_window.attr,
4278 &dev_attr_statistics.attr,
4279 &dev_attr_status.attr,
4280 &dev_attr_temperature.attr,
4281 &dev_attr_tx_power.attr,
4282 #ifdef CONFIG_IWLWIFI_DEBUG
4283 &dev_attr_debug_level.attr,
4284 #endif
4285 &dev_attr_version.attr,
4286
4287 NULL
4288 };
4289
4290 static struct attribute_group iwl4965_attribute_group = {
4291 .name = NULL, /* put in device directory */
4292 .attrs = iwl4965_sysfs_entries,
4293 };
4294
4295 static struct ieee80211_ops iwl4965_hw_ops = {
4296 .tx = iwl4965_mac_tx,
4297 .start = iwl4965_mac_start,
4298 .stop = iwl4965_mac_stop,
4299 .add_interface = iwl4965_mac_add_interface,
4300 .remove_interface = iwl4965_mac_remove_interface,
4301 .config = iwl4965_mac_config,
4302 .config_interface = iwl4965_mac_config_interface,
4303 .configure_filter = iwl4965_configure_filter,
4304 .set_key = iwl4965_mac_set_key,
4305 .update_tkip_key = iwl4965_mac_update_tkip_key,
4306 .get_stats = iwl4965_mac_get_stats,
4307 .get_tx_stats = iwl4965_mac_get_tx_stats,
4308 .conf_tx = iwl4965_mac_conf_tx,
4309 .get_tsf = iwl4965_mac_get_tsf,
4310 .reset_tsf = iwl4965_mac_reset_tsf,
4311 .beacon_update = iwl4965_mac_beacon_update,
4312 .bss_info_changed = iwl4965_bss_info_changed,
4313 .ampdu_action = iwl4965_mac_ampdu_action,
4314 .hw_scan = iwl4965_mac_hw_scan
4315 };
4316
4317 static int iwl4965_pci_probe(struct pci_dev *pdev, const struct pci_device_id *ent)
4318 {
4319 int err = 0;
4320 struct iwl_priv *priv;
4321 struct ieee80211_hw *hw;
4322 struct iwl_cfg *cfg = (struct iwl_cfg *)(ent->driver_data);
4323 unsigned long flags;
4324 DECLARE_MAC_BUF(mac);
4325
4326 /************************
4327 * 1. Allocating HW data
4328 ************************/
4329
4330 /* Disabling hardware scan means that mac80211 will perform scans
4331 * "the hard way", rather than using device's scan. */
4332 if (cfg->mod_params->disable_hw_scan) {
4333 if (cfg->mod_params->debug & IWL_DL_INFO)
4334 dev_printk(KERN_DEBUG, &(pdev->dev),
4335 "Disabling hw_scan\n");
4336 iwl4965_hw_ops.hw_scan = NULL;
4337 }
4338
4339 hw = iwl_alloc_all(cfg, &iwl4965_hw_ops);
4340 if (!hw) {
4341 err = -ENOMEM;
4342 goto out;
4343 }
4344 priv = hw->priv;
4345 /* At this point both hw and priv are allocated. */
4346
4347 SET_IEEE80211_DEV(hw, &pdev->dev);
4348
4349 IWL_DEBUG_INFO("*** LOAD DRIVER ***\n");
4350 priv->cfg = cfg;
4351 priv->pci_dev = pdev;
4352
4353 #ifdef CONFIG_IWLWIFI_DEBUG
4354 priv->debug_level = priv->cfg->mod_params->debug;
4355 atomic_set(&priv->restrict_refcnt, 0);
4356 #endif
4357
4358 /**************************
4359 * 2. Initializing PCI bus
4360 **************************/
4361 if (pci_enable_device(pdev)) {
4362 err = -ENODEV;
4363 goto out_ieee80211_free_hw;
4364 }
4365
4366 pci_set_master(pdev);
4367
4368 err = pci_set_dma_mask(pdev, DMA_64BIT_MASK);
4369 if (!err)
4370 err = pci_set_consistent_dma_mask(pdev, DMA_64BIT_MASK);
4371 if (err) {
4372 err = pci_set_dma_mask(pdev, DMA_32BIT_MASK);
4373 if (!err)
4374 err = pci_set_consistent_dma_mask(pdev, DMA_32BIT_MASK);
4375 /* both attempts failed: */
4376 if (err) {
4377 printk(KERN_WARNING "%s: No suitable DMA available.\n",
4378 DRV_NAME);
4379 goto out_pci_disable_device;
4380 }
4381 }
4382
4383 err = pci_request_regions(pdev, DRV_NAME);
4384 if (err)
4385 goto out_pci_disable_device;
4386
4387 pci_set_drvdata(pdev, priv);
4388
4389 /* We disable the RETRY_TIMEOUT register (0x41) to keep
4390 * PCI Tx retries from interfering with C3 CPU state */
4391 pci_write_config_byte(pdev, 0x41, 0x00);
4392
4393 /***********************
4394 * 3. Read REV register
4395 ***********************/
4396 priv->hw_base = pci_iomap(pdev, 0, 0);
4397 if (!priv->hw_base) {
4398 err = -ENODEV;
4399 goto out_pci_release_regions;
4400 }
4401
4402 IWL_DEBUG_INFO("pci_resource_len = 0x%08llx\n",
4403 (unsigned long long) pci_resource_len(pdev, 0));
4404 IWL_DEBUG_INFO("pci_resource_base = %p\n", priv->hw_base);
4405
4406 iwl_hw_detect(priv);
4407 printk(KERN_INFO DRV_NAME
4408 ": Detected Intel Wireless WiFi Link %s REV=0x%X\n",
4409 priv->cfg->name, priv->hw_rev);
4410
4411 /* amp init */
4412 err = priv->cfg->ops->lib->apm_ops.init(priv);
4413 if (err < 0) {
4414 IWL_DEBUG_INFO("Failed to init APMG\n");
4415 goto out_iounmap;
4416 }
4417 /*****************
4418 * 4. Read EEPROM
4419 *****************/
4420 /* Read the EEPROM */
4421 err = iwl_eeprom_init(priv);
4422 if (err) {
4423 IWL_ERROR("Unable to init EEPROM\n");
4424 goto out_iounmap;
4425 }
4426 err = iwl_eeprom_check_version(priv);
4427 if (err)
4428 goto out_iounmap;
4429
4430 /* extract MAC Address */
4431 iwl_eeprom_get_mac(priv, priv->mac_addr);
4432 IWL_DEBUG_INFO("MAC address: %s\n", print_mac(mac, priv->mac_addr));
4433 SET_IEEE80211_PERM_ADDR(priv->hw, priv->mac_addr);
4434
4435 /************************
4436 * 5. Setup HW constants
4437 ************************/
4438 /* Device-specific setup */
4439 if (priv->cfg->ops->lib->set_hw_params(priv)) {
4440 IWL_ERROR("failed to set hw parameters\n");
4441 goto out_free_eeprom;
4442 }
4443
4444 /*******************
4445 * 6. Setup priv
4446 *******************/
4447
4448 err = iwl_init_drv(priv);
4449 if (err)
4450 goto out_free_eeprom;
4451 /* At this point both hw and priv are initialized. */
4452
4453 /**********************************
4454 * 7. Initialize module parameters
4455 **********************************/
4456
4457 /* Disable radio (SW RF KILL) via parameter when loading driver */
4458 if (priv->cfg->mod_params->disable) {
4459 set_bit(STATUS_RF_KILL_SW, &priv->status);
4460 IWL_DEBUG_INFO("Radio disabled.\n");
4461 }
4462
4463 /********************
4464 * 8. Setup services
4465 ********************/
4466 spin_lock_irqsave(&priv->lock, flags);
4467 iwl4965_disable_interrupts(priv);
4468 spin_unlock_irqrestore(&priv->lock, flags);
4469
4470 err = sysfs_create_group(&pdev->dev.kobj, &iwl4965_attribute_group);
4471 if (err) {
4472 IWL_ERROR("failed to create sysfs device attributes\n");
4473 goto out_uninit_drv;
4474 }
4475
4476
4477 iwl_setup_deferred_work(priv);
4478 iwl4965_setup_rx_handlers(priv);
4479
4480 /********************
4481 * 9. Conclude
4482 ********************/
4483 pci_save_state(pdev);
4484 pci_disable_device(pdev);
4485
4486 /**********************************
4487 * 10. Setup and register mac80211
4488 **********************************/
4489
4490 err = iwl_setup_mac(priv);
4491 if (err)
4492 goto out_remove_sysfs;
4493
4494 err = iwl_dbgfs_register(priv, DRV_NAME);
4495 if (err)
4496 IWL_ERROR("failed to create debugfs files\n");
4497
4498 /* notify iwlcore to init */
4499 iwlcore_low_level_notify(priv, IWLCORE_INIT_EVT);
4500 return 0;
4501
4502 out_remove_sysfs:
4503 sysfs_remove_group(&pdev->dev.kobj, &iwl4965_attribute_group);
4504 out_uninit_drv:
4505 iwl_uninit_drv(priv);
4506 out_free_eeprom:
4507 iwl_eeprom_free(priv);
4508 out_iounmap:
4509 pci_iounmap(pdev, priv->hw_base);
4510 out_pci_release_regions:
4511 pci_release_regions(pdev);
4512 pci_set_drvdata(pdev, NULL);
4513 out_pci_disable_device:
4514 pci_disable_device(pdev);
4515 out_ieee80211_free_hw:
4516 ieee80211_free_hw(priv->hw);
4517 out:
4518 return err;
4519 }
4520
4521 static void __devexit iwl4965_pci_remove(struct pci_dev *pdev)
4522 {
4523 struct iwl_priv *priv = pci_get_drvdata(pdev);
4524 struct list_head *p, *q;
4525 int i;
4526 unsigned long flags;
4527
4528 if (!priv)
4529 return;
4530
4531 IWL_DEBUG_INFO("*** UNLOAD DRIVER ***\n");
4532
4533 iwl_dbgfs_unregister(priv);
4534 sysfs_remove_group(&pdev->dev.kobj, &iwl4965_attribute_group);
4535
4536 if (priv->mac80211_registered) {
4537 ieee80211_unregister_hw(priv->hw);
4538 priv->mac80211_registered = 0;
4539 }
4540
4541 set_bit(STATUS_EXIT_PENDING, &priv->status);
4542
4543 iwl4965_down(priv);
4544
4545 /* make sure we flush any pending irq or
4546 * tasklet for the driver
4547 */
4548 spin_lock_irqsave(&priv->lock, flags);
4549 iwl4965_disable_interrupts(priv);
4550 spin_unlock_irqrestore(&priv->lock, flags);
4551
4552 iwl_synchronize_irq(priv);
4553
4554 /* Free MAC hash list for ADHOC */
4555 for (i = 0; i < IWL_IBSS_MAC_HASH_SIZE; i++) {
4556 list_for_each_safe(p, q, &priv->ibss_mac_hash[i]) {
4557 list_del(p);
4558 kfree(list_entry(p, struct iwl4965_ibss_seq, list));
4559 }
4560 }
4561
4562 iwlcore_low_level_notify(priv, IWLCORE_REMOVE_EVT);
4563
4564 iwl4965_dealloc_ucode_pci(priv);
4565
4566 if (priv->rxq.bd)
4567 iwl_rx_queue_free(priv, &priv->rxq);
4568 iwl_hw_txq_ctx_free(priv);
4569
4570 iwlcore_clear_stations_table(priv);
4571 iwl_eeprom_free(priv);
4572
4573
4574 /*netif_stop_queue(dev); */
4575 flush_workqueue(priv->workqueue);
4576
4577 /* ieee80211_unregister_hw calls iwl4965_mac_stop, which flushes
4578 * priv->workqueue... so we can't take down the workqueue
4579 * until now... */
4580 destroy_workqueue(priv->workqueue);
4581 priv->workqueue = NULL;
4582
4583 pci_iounmap(pdev, priv->hw_base);
4584 pci_release_regions(pdev);
4585 pci_disable_device(pdev);
4586 pci_set_drvdata(pdev, NULL);
4587
4588 iwl_uninit_drv(priv);
4589
4590 if (priv->ibss_beacon)
4591 dev_kfree_skb(priv->ibss_beacon);
4592
4593 ieee80211_free_hw(priv->hw);
4594 }
4595
4596 #ifdef CONFIG_PM
4597
4598 static int iwl4965_pci_suspend(struct pci_dev *pdev, pm_message_t state)
4599 {
4600 struct iwl_priv *priv = pci_get_drvdata(pdev);
4601
4602 if (priv->is_open) {
4603 set_bit(STATUS_IN_SUSPEND, &priv->status);
4604 iwl4965_mac_stop(priv->hw);
4605 priv->is_open = 1;
4606 }
4607
4608 pci_set_power_state(pdev, PCI_D3hot);
4609
4610 return 0;
4611 }
4612
4613 static int iwl4965_pci_resume(struct pci_dev *pdev)
4614 {
4615 struct iwl_priv *priv = pci_get_drvdata(pdev);
4616
4617 pci_set_power_state(pdev, PCI_D0);
4618
4619 if (priv->is_open)
4620 iwl4965_mac_start(priv->hw);
4621
4622 clear_bit(STATUS_IN_SUSPEND, &priv->status);
4623 return 0;
4624 }
4625
4626 #endif /* CONFIG_PM */
4627
4628 /*****************************************************************************
4629 *
4630 * driver and module entry point
4631 *
4632 *****************************************************************************/
4633
4634 /* Hardware specific file defines the PCI IDs table for that hardware module */
4635 static struct pci_device_id iwl_hw_card_ids[] = {
4636 {IWL_PCI_DEVICE(0x4229, PCI_ANY_ID, iwl4965_agn_cfg)},
4637 {IWL_PCI_DEVICE(0x4230, PCI_ANY_ID, iwl4965_agn_cfg)},
4638 #ifdef CONFIG_IWL5000
4639 {IWL_PCI_DEVICE(0x4235, PCI_ANY_ID, iwl5300_agn_cfg)},
4640 {IWL_PCI_DEVICE(0x4232, PCI_ANY_ID, iwl5100_agn_cfg)},
4641 {IWL_PCI_DEVICE(0x423A, PCI_ANY_ID, iwl5350_agn_cfg)},
4642 #endif /* CONFIG_IWL5000 */
4643 {0}
4644 };
4645 MODULE_DEVICE_TABLE(pci, iwl_hw_card_ids);
4646
4647 static struct pci_driver iwl_driver = {
4648 .name = DRV_NAME,
4649 .id_table = iwl_hw_card_ids,
4650 .probe = iwl4965_pci_probe,
4651 .remove = __devexit_p(iwl4965_pci_remove),
4652 #ifdef CONFIG_PM
4653 .suspend = iwl4965_pci_suspend,
4654 .resume = iwl4965_pci_resume,
4655 #endif
4656 };
4657
4658 static int __init iwl4965_init(void)
4659 {
4660
4661 int ret;
4662 printk(KERN_INFO DRV_NAME ": " DRV_DESCRIPTION ", " DRV_VERSION "\n");
4663 printk(KERN_INFO DRV_NAME ": " DRV_COPYRIGHT "\n");
4664
4665 ret = iwl4965_rate_control_register();
4666 if (ret) {
4667 IWL_ERROR("Unable to register rate control algorithm: %d\n", ret);
4668 return ret;
4669 }
4670
4671 ret = pci_register_driver(&iwl_driver);
4672 if (ret) {
4673 IWL_ERROR("Unable to initialize PCI module\n");
4674 goto error_register;
4675 }
4676
4677 return ret;
4678
4679 error_register:
4680 iwl4965_rate_control_unregister();
4681 return ret;
4682 }
4683
4684 static void __exit iwl4965_exit(void)
4685 {
4686 pci_unregister_driver(&iwl_driver);
4687 iwl4965_rate_control_unregister();
4688 }
4689
4690 module_exit(iwl4965_exit);
4691 module_init(iwl4965_init);
Linux kernel - Deliverables
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