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iwlwifi: remove 4965 prefix from iwl4965_ucode
[linux-2.6/mini2440.git] / drivers / net / wireless / iwlwifi / iwl4965-base.c
bloba9da17ce0e1d46357fa6669418c2fc5f7c5f3c5e
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 if (priv->is_open)
974 queue_work(priv->workqueue, &priv->restart);
975 return 1;
976 }
977
978 #define IWL_PACKET_RETRY_TIME HZ
979
980 int iwl4965_is_duplicate_packet(struct iwl_priv *priv, struct ieee80211_hdr *header)
981 {
982 u16 sc = le16_to_cpu(header->seq_ctrl);
983 u16 seq = (sc & IEEE80211_SCTL_SEQ) >> 4;
984 u16 frag = sc & IEEE80211_SCTL_FRAG;
985 u16 *last_seq, *last_frag;
986 unsigned long *last_time;
987
988 switch (priv->iw_mode) {
989 case IEEE80211_IF_TYPE_IBSS:{
990 struct list_head *p;
991 struct iwl4965_ibss_seq *entry = NULL;
992 u8 *mac = header->addr2;
993 int index = mac[5] & (IWL_IBSS_MAC_HASH_SIZE - 1);
994
995 __list_for_each(p, &priv->ibss_mac_hash[index]) {
996 entry = list_entry(p, struct iwl4965_ibss_seq, list);
997 if (!compare_ether_addr(entry->mac, mac))
998 break;
999 }
1000 if (p == &priv->ibss_mac_hash[index]) {
1001 entry = kzalloc(sizeof(*entry), GFP_ATOMIC);
1002 if (!entry) {
1003 IWL_ERROR("Cannot malloc new mac entry\n");
1004 return 0;
1005 }
1006 memcpy(entry->mac, mac, ETH_ALEN);
1007 entry->seq_num = seq;
1008 entry->frag_num = frag;
1009 entry->packet_time = jiffies;
1010 list_add(&entry->list, &priv->ibss_mac_hash[index]);
1011 return 0;
1012 }
1013 last_seq = &entry->seq_num;
1014 last_frag = &entry->frag_num;
1015 last_time = &entry->packet_time;
1016 break;
1017 }
1018 case IEEE80211_IF_TYPE_STA:
1019 last_seq = &priv->last_seq_num;
1020 last_frag = &priv->last_frag_num;
1021 last_time = &priv->last_packet_time;
1022 break;
1023 default:
1024 return 0;
1025 }
1026 if ((*last_seq == seq) &&
1027 time_after(*last_time + IWL_PACKET_RETRY_TIME, jiffies)) {
1028 if (*last_frag == frag)
1029 goto drop;
1030 if (*last_frag + 1 != frag)
1031 /* out-of-order fragment */
1032 goto drop;
1033 } else
1034 *last_seq = seq;
1035
1036 *last_frag = frag;
1037 *last_time = jiffies;
1038 return 0;
1039
1040 drop:
1041 return 1;
1042 }
1043
1044 #ifdef CONFIG_IWL4965_SPECTRUM_MEASUREMENT
1045
1046 #include "iwl-spectrum.h"
1047
1048 #define BEACON_TIME_MASK_LOW 0x00FFFFFF
1049 #define BEACON_TIME_MASK_HIGH 0xFF000000
1050 #define TIME_UNIT 1024
1051
1052 /*
1053 * extended beacon time format
1054 * time in usec will be changed into a 32-bit value in 8:24 format
1055 * the high 1 byte is the beacon counts
1056 * the lower 3 bytes is the time in usec within one beacon interval
1057 */
1058
1059 static u32 iwl4965_usecs_to_beacons(u32 usec, u32 beacon_interval)
1060 {
1061 u32 quot;
1062 u32 rem;
1063 u32 interval = beacon_interval * 1024;
1064
1065 if (!interval || !usec)
1066 return 0;
1067
1068 quot = (usec / interval) & (BEACON_TIME_MASK_HIGH >> 24);
1069 rem = (usec % interval) & BEACON_TIME_MASK_LOW;
1070
1071 return (quot << 24) + rem;
1072 }
1073
1074 /* base is usually what we get from ucode with each received frame,
1075 * the same as HW timer counter counting down
1076 */
1077
1078 static __le32 iwl4965_add_beacon_time(u32 base, u32 addon, u32 beacon_interval)
1079 {
1080 u32 base_low = base & BEACON_TIME_MASK_LOW;
1081 u32 addon_low = addon & BEACON_TIME_MASK_LOW;
1082 u32 interval = beacon_interval * TIME_UNIT;
1083 u32 res = (base & BEACON_TIME_MASK_HIGH) +
1084 (addon & BEACON_TIME_MASK_HIGH);
1085
1086 if (base_low > addon_low)
1087 res += base_low - addon_low;
1088 else if (base_low < addon_low) {
1089 res += interval + base_low - addon_low;
1090 res += (1 << 24);
1091 } else
1092 res += (1 << 24);
1093
1094 return cpu_to_le32(res);
1095 }
1096
1097 static int iwl4965_get_measurement(struct iwl_priv *priv,
1098 struct ieee80211_measurement_params *params,
1099 u8 type)
1100 {
1101 struct iwl4965_spectrum_cmd spectrum;
1102 struct iwl_rx_packet *res;
1103 struct iwl_host_cmd cmd = {
1104 .id = REPLY_SPECTRUM_MEASUREMENT_CMD,
1105 .data = (void *)&spectrum,
1106 .meta.flags = CMD_WANT_SKB,
1107 };
1108 u32 add_time = le64_to_cpu(params->start_time);
1109 int rc;
1110 int spectrum_resp_status;
1111 int duration = le16_to_cpu(params->duration);
1112
1113 if (iwl_is_associated(priv))
1114 add_time =
1115 iwl4965_usecs_to_beacons(
1116 le64_to_cpu(params->start_time) - priv->last_tsf,
1117 le16_to_cpu(priv->rxon_timing.beacon_interval));
1118
1119 memset(&spectrum, 0, sizeof(spectrum));
1120
1121 spectrum.channel_count = cpu_to_le16(1);
1122 spectrum.flags =
1123 RXON_FLG_TSF2HOST_MSK | RXON_FLG_ANT_A_MSK | RXON_FLG_DIS_DIV_MSK;
1124 spectrum.filter_flags = MEASUREMENT_FILTER_FLAG;
1125 cmd.len = sizeof(spectrum);
1126 spectrum.len = cpu_to_le16(cmd.len - sizeof(spectrum.len));
1127
1128 if (iwl_is_associated(priv))
1129 spectrum.start_time =
1130 iwl4965_add_beacon_time(priv->last_beacon_time,
1131 add_time,
1132 le16_to_cpu(priv->rxon_timing.beacon_interval));
1133 else
1134 spectrum.start_time = 0;
1135
1136 spectrum.channels[0].duration = cpu_to_le32(duration * TIME_UNIT);
1137 spectrum.channels[0].channel = params->channel;
1138 spectrum.channels[0].type = type;
1139 if (priv->active_rxon.flags & RXON_FLG_BAND_24G_MSK)
1140 spectrum.flags |= RXON_FLG_BAND_24G_MSK |
1141 RXON_FLG_AUTO_DETECT_MSK | RXON_FLG_TGG_PROTECT_MSK;
1142
1143 rc = iwl_send_cmd_sync(priv, &cmd);
1144 if (rc)
1145 return rc;
1146
1147 res = (struct iwl_rx_packet *)cmd.meta.u.skb->data;
1148 if (res->hdr.flags & IWL_CMD_FAILED_MSK) {
1149 IWL_ERROR("Bad return from REPLY_RX_ON_ASSOC command\n");
1150 rc = -EIO;
1151 }
1152
1153 spectrum_resp_status = le16_to_cpu(res->u.spectrum.status);
1154 switch (spectrum_resp_status) {
1155 case 0: /* Command will be handled */
1156 if (res->u.spectrum.id != 0xff) {
1157 IWL_DEBUG_INFO
1158 ("Replaced existing measurement: %d\n",
1159 res->u.spectrum.id);
1160 priv->measurement_status &= ~MEASUREMENT_READY;
1161 }
1162 priv->measurement_status |= MEASUREMENT_ACTIVE;
1163 rc = 0;
1164 break;
1165
1166 case 1: /* Command will not be handled */
1167 rc = -EAGAIN;
1168 break;
1169 }
1170
1171 dev_kfree_skb_any(cmd.meta.u.skb);
1172
1173 return rc;
1174 }
1175 #endif
1176
1177 /******************************************************************************
1178 *
1179 * Generic RX handler implementations
1180 *
1181 ******************************************************************************/
1182 static void iwl_rx_reply_alive(struct iwl_priv *priv,
1183 struct iwl_rx_mem_buffer *rxb)
1184 {
1185 struct iwl_rx_packet *pkt = (struct iwl_rx_packet *)rxb->skb->data;
1186 struct iwl_alive_resp *palive;
1187 struct delayed_work *pwork;
1188
1189 palive = &pkt->u.alive_frame;
1190
1191 IWL_DEBUG_INFO("Alive ucode status 0x%08X revision "
1192 "0x%01X 0x%01X\n",
1193 palive->is_valid, palive->ver_type,
1194 palive->ver_subtype);
1195
1196 if (palive->ver_subtype == INITIALIZE_SUBTYPE) {
1197 IWL_DEBUG_INFO("Initialization Alive received.\n");
1198 memcpy(&priv->card_alive_init,
1199 &pkt->u.alive_frame,
1200 sizeof(struct iwl_init_alive_resp));
1201 pwork = &priv->init_alive_start;
1202 } else {
1203 IWL_DEBUG_INFO("Runtime Alive received.\n");
1204 memcpy(&priv->card_alive, &pkt->u.alive_frame,
1205 sizeof(struct iwl_alive_resp));
1206 pwork = &priv->alive_start;
1207 }
1208
1209 /* We delay the ALIVE response by 5ms to
1210 * give the HW RF Kill time to activate... */
1211 if (palive->is_valid == UCODE_VALID_OK)
1212 queue_delayed_work(priv->workqueue, pwork,
1213 msecs_to_jiffies(5));
1214 else
1215 IWL_WARNING("uCode did not respond OK.\n");
1216 }
1217
1218 static void iwl4965_rx_reply_error(struct iwl_priv *priv,
1219 struct iwl_rx_mem_buffer *rxb)
1220 {
1221 struct iwl_rx_packet *pkt = (struct iwl_rx_packet *)rxb->skb->data;
1222
1223 IWL_ERROR("Error Reply type 0x%08X cmd %s (0x%02X) "
1224 "seq 0x%04X ser 0x%08X\n",
1225 le32_to_cpu(pkt->u.err_resp.error_type),
1226 get_cmd_string(pkt->u.err_resp.cmd_id),
1227 pkt->u.err_resp.cmd_id,
1228 le16_to_cpu(pkt->u.err_resp.bad_cmd_seq_num),
1229 le32_to_cpu(pkt->u.err_resp.error_info));
1230 }
1231
1232 #define TX_STATUS_ENTRY(x) case TX_STATUS_FAIL_ ## x: return #x
1233
1234 static void iwl4965_rx_csa(struct iwl_priv *priv, struct iwl_rx_mem_buffer *rxb)
1235 {
1236 struct iwl_rx_packet *pkt = (struct iwl_rx_packet *)rxb->skb->data;
1237 struct iwl_rxon_cmd *rxon = (void *)&priv->active_rxon;
1238 struct iwl4965_csa_notification *csa = &(pkt->u.csa_notif);
1239 IWL_DEBUG_11H("CSA notif: channel %d, status %d\n",
1240 le16_to_cpu(csa->channel), le32_to_cpu(csa->status));
1241 rxon->channel = csa->channel;
1242 priv->staging_rxon.channel = csa->channel;
1243 }
1244
1245 static void iwl4965_rx_spectrum_measure_notif(struct iwl_priv *priv,
1246 struct iwl_rx_mem_buffer *rxb)
1247 {
1248 #ifdef CONFIG_IWL4965_SPECTRUM_MEASUREMENT
1249 struct iwl_rx_packet *pkt = (struct iwl_rx_packet *)rxb->skb->data;
1250 struct iwl4965_spectrum_notification *report = &(pkt->u.spectrum_notif);
1251
1252 if (!report->state) {
1253 IWL_DEBUG(IWL_DL_11H,
1254 "Spectrum Measure Notification: Start\n");
1255 return;
1256 }
1257
1258 memcpy(&priv->measure_report, report, sizeof(*report));
1259 priv->measurement_status |= MEASUREMENT_READY;
1260 #endif
1261 }
1262
1263 static void iwl4965_rx_pm_sleep_notif(struct iwl_priv *priv,
1264 struct iwl_rx_mem_buffer *rxb)
1265 {
1266 #ifdef CONFIG_IWLWIFI_DEBUG
1267 struct iwl_rx_packet *pkt = (struct iwl_rx_packet *)rxb->skb->data;
1268 struct iwl4965_sleep_notification *sleep = &(pkt->u.sleep_notif);
1269 IWL_DEBUG_RX("sleep mode: %d, src: %d\n",
1270 sleep->pm_sleep_mode, sleep->pm_wakeup_src);
1271 #endif
1272 }
1273
1274 static void iwl4965_rx_pm_debug_statistics_notif(struct iwl_priv *priv,
1275 struct iwl_rx_mem_buffer *rxb)
1276 {
1277 struct iwl_rx_packet *pkt = (struct iwl_rx_packet *)rxb->skb->data;
1278 IWL_DEBUG_RADIO("Dumping %d bytes of unhandled "
1279 "notification for %s:\n",
1280 le32_to_cpu(pkt->len), get_cmd_string(pkt->hdr.cmd));
1281 iwl_print_hex_dump(priv, IWL_DL_RADIO, pkt->u.raw, le32_to_cpu(pkt->len));
1282 }
1283
1284 static void iwl4965_bg_beacon_update(struct work_struct *work)
1285 {
1286 struct iwl_priv *priv =
1287 container_of(work, struct iwl_priv, beacon_update);
1288 struct sk_buff *beacon;
1289
1290 /* Pull updated AP beacon from mac80211. will fail if not in AP mode */
1291 beacon = ieee80211_beacon_get(priv->hw, priv->vif);
1292
1293 if (!beacon) {
1294 IWL_ERROR("update beacon failed\n");
1295 return;
1296 }
1297
1298 mutex_lock(&priv->mutex);
1299 /* new beacon skb is allocated every time; dispose previous.*/
1300 if (priv->ibss_beacon)
1301 dev_kfree_skb(priv->ibss_beacon);
1302
1303 priv->ibss_beacon = beacon;
1304 mutex_unlock(&priv->mutex);
1305
1306 iwl4965_send_beacon_cmd(priv);
1307 }
1308
1309 /**
1310 * iwl4965_bg_statistics_periodic - Timer callback to queue statistics
1311 *
1312 * This callback is provided in order to send a statistics request.
1313 *
1314 * This timer function is continually reset to execute within
1315 * REG_RECALIB_PERIOD seconds since the last STATISTICS_NOTIFICATION
1316 * was received. We need to ensure we receive the statistics in order
1317 * to update the temperature used for calibrating the TXPOWER.
1318 */
1319 static void iwl4965_bg_statistics_periodic(unsigned long data)
1320 {
1321 struct iwl_priv *priv = (struct iwl_priv *)data;
1322
1323 if (test_bit(STATUS_EXIT_PENDING, &priv->status))
1324 return;
1325
1326 iwl_send_statistics_request(priv, CMD_ASYNC);
1327 }
1328
1329 static void iwl4965_rx_beacon_notif(struct iwl_priv *priv,
1330 struct iwl_rx_mem_buffer *rxb)
1331 {
1332 #ifdef CONFIG_IWLWIFI_DEBUG
1333 struct iwl_rx_packet *pkt = (struct iwl_rx_packet *)rxb->skb->data;
1334 struct iwl4965_beacon_notif *beacon = &(pkt->u.beacon_status);
1335 u8 rate = iwl_hw_get_rate(beacon->beacon_notify_hdr.rate_n_flags);
1336
1337 IWL_DEBUG_RX("beacon status %x retries %d iss %d "
1338 "tsf %d %d rate %d\n",
1339 le32_to_cpu(beacon->beacon_notify_hdr.u.status) & TX_STATUS_MSK,
1340 beacon->beacon_notify_hdr.failure_frame,
1341 le32_to_cpu(beacon->ibss_mgr_status),
1342 le32_to_cpu(beacon->high_tsf),
1343 le32_to_cpu(beacon->low_tsf), rate);
1344 #endif
1345
1346 if ((priv->iw_mode == IEEE80211_IF_TYPE_AP) &&
1347 (!test_bit(STATUS_EXIT_PENDING, &priv->status)))
1348 queue_work(priv->workqueue, &priv->beacon_update);
1349 }
1350
1351 /* Handle notification from uCode that card's power state is changing
1352 * due to software, hardware, or critical temperature RFKILL */
1353 static void iwl4965_rx_card_state_notif(struct iwl_priv *priv,
1354 struct iwl_rx_mem_buffer *rxb)
1355 {
1356 struct iwl_rx_packet *pkt = (struct iwl_rx_packet *)rxb->skb->data;
1357 u32 flags = le32_to_cpu(pkt->u.card_state_notif.flags);
1358 unsigned long status = priv->status;
1359
1360 IWL_DEBUG_RF_KILL("Card state received: HW:%s SW:%s\n",
1361 (flags & HW_CARD_DISABLED) ? "Kill" : "On",
1362 (flags & SW_CARD_DISABLED) ? "Kill" : "On");
1363
1364 if (flags & (SW_CARD_DISABLED | HW_CARD_DISABLED |
1365 RF_CARD_DISABLED)) {
1366
1367 iwl_write32(priv, CSR_UCODE_DRV_GP1_SET,
1368 CSR_UCODE_DRV_GP1_BIT_CMD_BLOCKED);
1369
1370 if (!iwl_grab_nic_access(priv)) {
1371 iwl_write_direct32(
1372 priv, HBUS_TARG_MBX_C,
1373 HBUS_TARG_MBX_C_REG_BIT_CMD_BLOCKED);
1374
1375 iwl_release_nic_access(priv);
1376 }
1377
1378 if (!(flags & RXON_CARD_DISABLED)) {
1379 iwl_write32(priv, CSR_UCODE_DRV_GP1_CLR,
1380 CSR_UCODE_DRV_GP1_BIT_CMD_BLOCKED);
1381 if (!iwl_grab_nic_access(priv)) {
1382 iwl_write_direct32(
1383 priv, HBUS_TARG_MBX_C,
1384 HBUS_TARG_MBX_C_REG_BIT_CMD_BLOCKED);
1385
1386 iwl_release_nic_access(priv);
1387 }
1388 }
1389
1390 if (flags & RF_CARD_DISABLED) {
1391 iwl_write32(priv, CSR_UCODE_DRV_GP1_SET,
1392 CSR_UCODE_DRV_GP1_REG_BIT_CT_KILL_EXIT);
1393 iwl_read32(priv, CSR_UCODE_DRV_GP1);
1394 if (!iwl_grab_nic_access(priv))
1395 iwl_release_nic_access(priv);
1396 }
1397 }
1398
1399 if (flags & HW_CARD_DISABLED)
1400 set_bit(STATUS_RF_KILL_HW, &priv->status);
1401 else
1402 clear_bit(STATUS_RF_KILL_HW, &priv->status);
1403
1404
1405 if (flags & SW_CARD_DISABLED)
1406 set_bit(STATUS_RF_KILL_SW, &priv->status);
1407 else
1408 clear_bit(STATUS_RF_KILL_SW, &priv->status);
1409
1410 if (!(flags & RXON_CARD_DISABLED))
1411 iwl_scan_cancel(priv);
1412
1413 if ((test_bit(STATUS_RF_KILL_HW, &status) !=
1414 test_bit(STATUS_RF_KILL_HW, &priv->status)) ||
1415 (test_bit(STATUS_RF_KILL_SW, &status) !=
1416 test_bit(STATUS_RF_KILL_SW, &priv->status)))
1417 queue_work(priv->workqueue, &priv->rf_kill);
1418 else
1419 wake_up_interruptible(&priv->wait_command_queue);
1420 }
1421
1422 /* Cache phy data (Rx signal strength, etc) for HT frame (REPLY_RX_PHY_CMD).
1423 * This will be used later in iwl4965_rx_reply_rx() for REPLY_RX_MPDU_CMD. */
1424 static void iwl4965_rx_reply_rx_phy(struct iwl_priv *priv,
1425 struct iwl_rx_mem_buffer *rxb)
1426 {
1427 struct iwl_rx_packet *pkt = (struct iwl_rx_packet *)rxb->skb->data;
1428 priv->last_phy_res[0] = 1;
1429 memcpy(&priv->last_phy_res[1], &(pkt->u.raw[0]),
1430 sizeof(struct iwl4965_rx_phy_res));
1431 }
1432
1433 /**
1434 * iwl4965_setup_rx_handlers - Initialize Rx handler callbacks
1435 *
1436 * Setup the RX handlers for each of the reply types sent from the uCode
1437 * to the host.
1438 *
1439 * This function chains into the hardware specific files for them to setup
1440 * any hardware specific handlers as well.
1441 */
1442 static void iwl4965_setup_rx_handlers(struct iwl_priv *priv)
1443 {
1444 priv->rx_handlers[REPLY_ALIVE] = iwl_rx_reply_alive;
1445 priv->rx_handlers[REPLY_ERROR] = iwl4965_rx_reply_error;
1446 priv->rx_handlers[CHANNEL_SWITCH_NOTIFICATION] = iwl4965_rx_csa;
1447 priv->rx_handlers[SPECTRUM_MEASURE_NOTIFICATION] =
1448 iwl4965_rx_spectrum_measure_notif;
1449 priv->rx_handlers[PM_SLEEP_NOTIFICATION] = iwl4965_rx_pm_sleep_notif;
1450 priv->rx_handlers[PM_DEBUG_STATISTIC_NOTIFIC] =
1451 iwl4965_rx_pm_debug_statistics_notif;
1452 priv->rx_handlers[BEACON_NOTIFICATION] = iwl4965_rx_beacon_notif;
1453
1454 /*
1455 * The same handler is used for both the REPLY to a discrete
1456 * statistics request from the host as well as for the periodic
1457 * statistics notifications (after received beacons) from the uCode.
1458 */
1459 priv->rx_handlers[REPLY_STATISTICS_CMD] = iwl4965_hw_rx_statistics;
1460 priv->rx_handlers[STATISTICS_NOTIFICATION] = iwl4965_hw_rx_statistics;
1461
1462 iwl_setup_rx_scan_handlers(priv);
1463
1464 /* status change handler */
1465 priv->rx_handlers[CARD_STATE_NOTIFICATION] = iwl4965_rx_card_state_notif;
1466
1467 priv->rx_handlers[MISSED_BEACONS_NOTIFICATION] =
1468 iwl_rx_missed_beacon_notif;
1469 /* Rx handlers */
1470 priv->rx_handlers[REPLY_RX_PHY_CMD] = iwl4965_rx_reply_rx_phy;
1471 priv->rx_handlers[REPLY_RX_MPDU_CMD] = iwl4965_rx_reply_rx;
1472 /* Set up hardware specific Rx handlers */
1473 priv->cfg->ops->lib->rx_handler_setup(priv);
1474 }
1475
1476 /*
1477 * this should be called while priv->lock is locked
1478 */
1479 static void __iwl_rx_replenish(struct iwl_priv *priv)
1480 {
1481 iwl_rx_allocate(priv);
1482 iwl_rx_queue_restock(priv);
1483 }
1484
1485
1486 /**
1487 * iwl_rx_handle - Main entry function for receiving responses from uCode
1488 *
1489 * Uses the priv->rx_handlers callback function array to invoke
1490 * the appropriate handlers, including command responses,
1491 * frame-received notifications, and other notifications.
1492 */
1493 void iwl_rx_handle(struct iwl_priv *priv)
1494 {
1495 struct iwl_rx_mem_buffer *rxb;
1496 struct iwl_rx_packet *pkt;
1497 struct iwl_rx_queue *rxq = &priv->rxq;
1498 u32 r, i;
1499 int reclaim;
1500 unsigned long flags;
1501 u8 fill_rx = 0;
1502 u32 count = 8;
1503
1504 /* uCode's read index (stored in shared DRAM) indicates the last Rx
1505 * buffer that the driver may process (last buffer filled by ucode). */
1506 r = priv->cfg->ops->lib->shared_mem_rx_idx(priv);
1507 i = rxq->read;
1508
1509 /* Rx interrupt, but nothing sent from uCode */
1510 if (i == r)
1511 IWL_DEBUG(IWL_DL_RX, "r = %d, i = %d\n", r, i);
1512
1513 if (iwl_rx_queue_space(rxq) > (RX_QUEUE_SIZE / 2))
1514 fill_rx = 1;
1515
1516 while (i != r) {
1517 rxb = rxq->queue[i];
1518
1519 /* If an RXB doesn't have a Rx queue slot associated with it,
1520 * then a bug has been introduced in the queue refilling
1521 * routines -- catch it here */
1522 BUG_ON(rxb == NULL);
1523
1524 rxq->queue[i] = NULL;
1525
1526 pci_dma_sync_single_for_cpu(priv->pci_dev, rxb->dma_addr,
1527 priv->hw_params.rx_buf_size,
1528 PCI_DMA_FROMDEVICE);
1529 pkt = (struct iwl_rx_packet *)rxb->skb->data;
1530
1531 /* Reclaim a command buffer only if this packet is a response
1532 * to a (driver-originated) command.
1533 * If the packet (e.g. Rx frame) originated from uCode,
1534 * there is no command buffer to reclaim.
1535 * Ucode should set SEQ_RX_FRAME bit if ucode-originated,
1536 * but apparently a few don't get set; catch them here. */
1537 reclaim = !(pkt->hdr.sequence & SEQ_RX_FRAME) &&
1538 (pkt->hdr.cmd != REPLY_RX_PHY_CMD) &&
1539 (pkt->hdr.cmd != REPLY_RX) &&
1540 (pkt->hdr.cmd != REPLY_COMPRESSED_BA) &&
1541 (pkt->hdr.cmd != STATISTICS_NOTIFICATION) &&
1542 (pkt->hdr.cmd != REPLY_TX);
1543
1544 /* Based on type of command response or notification,
1545 * handle those that need handling via function in
1546 * rx_handlers table. See iwl4965_setup_rx_handlers() */
1547 if (priv->rx_handlers[pkt->hdr.cmd]) {
1548 IWL_DEBUG(IWL_DL_RX, "r = %d, i = %d, %s, 0x%02x\n", r,
1549 i, get_cmd_string(pkt->hdr.cmd), pkt->hdr.cmd);
1550 priv->rx_handlers[pkt->hdr.cmd] (priv, rxb);
1551 } else {
1552 /* No handling needed */
1553 IWL_DEBUG(IWL_DL_RX,
1554 "r %d i %d No handler needed for %s, 0x%02x\n",
1555 r, i, get_cmd_string(pkt->hdr.cmd),
1556 pkt->hdr.cmd);
1557 }
1558
1559 if (reclaim) {
1560 /* Invoke any callbacks, transfer the skb to caller, and
1561 * fire off the (possibly) blocking iwl_send_cmd()
1562 * as we reclaim the driver command queue */
1563 if (rxb && rxb->skb)
1564 iwl_tx_cmd_complete(priv, rxb);
1565 else
1566 IWL_WARNING("Claim null rxb?\n");
1567 }
1568
1569 /* For now we just don't re-use anything. We can tweak this
1570 * later to try and re-use notification packets and SKBs that
1571 * fail to Rx correctly */
1572 if (rxb->skb != NULL) {
1573 priv->alloc_rxb_skb--;
1574 dev_kfree_skb_any(rxb->skb);
1575 rxb->skb = NULL;
1576 }
1577
1578 pci_unmap_single(priv->pci_dev, rxb->dma_addr,
1579 priv->hw_params.rx_buf_size,
1580 PCI_DMA_FROMDEVICE);
1581 spin_lock_irqsave(&rxq->lock, flags);
1582 list_add_tail(&rxb->list, &priv->rxq.rx_used);
1583 spin_unlock_irqrestore(&rxq->lock, flags);
1584 i = (i + 1) & RX_QUEUE_MASK;
1585 /* If there are a lot of unused frames,
1586 * restock the Rx queue so ucode wont assert. */
1587 if (fill_rx) {
1588 count++;
1589 if (count >= 8) {
1590 priv->rxq.read = i;
1591 __iwl_rx_replenish(priv);
1592 count = 0;
1593 }
1594 }
1595 }
1596
1597 /* Backtrack one entry */
1598 priv->rxq.read = i;
1599 iwl_rx_queue_restock(priv);
1600 }
1601
1602 #define PERFECT_RSSI (-20) /* dBm */
1603 #define WORST_RSSI (-95) /* dBm */
1604 #define RSSI_RANGE (PERFECT_RSSI - WORST_RSSI)
1605
1606 /* Calculate an indication of rx signal quality (a percentage, not dBm!).
1607 * See http://www.ces.clemson.edu/linux/signal_quality.shtml for info
1608 * about formulas used below. */
1609 int iwl4965_calc_sig_qual(int rssi_dbm, int noise_dbm)
1610 {
1611 int sig_qual;
1612 int degradation = PERFECT_RSSI - rssi_dbm;
1613
1614 /* If we get a noise measurement, use signal-to-noise ratio (SNR)
1615 * as indicator; formula is (signal dbm - noise dbm).
1616 * SNR at or above 40 is a great signal (100%).
1617 * Below that, scale to fit SNR of 0 - 40 dB within 0 - 100% indicator.
1618 * Weakest usable signal is usually 10 - 15 dB SNR. */
1619 if (noise_dbm) {
1620 if (rssi_dbm - noise_dbm >= 40)
1621 return 100;
1622 else if (rssi_dbm < noise_dbm)
1623 return 0;
1624 sig_qual = ((rssi_dbm - noise_dbm) * 5) / 2;
1625
1626 /* Else use just the signal level.
1627 * This formula is a least squares fit of data points collected and
1628 * compared with a reference system that had a percentage (%) display
1629 * for signal quality. */
1630 } else
1631 sig_qual = (100 * (RSSI_RANGE * RSSI_RANGE) - degradation *
1632 (15 * RSSI_RANGE + 62 * degradation)) /
1633 (RSSI_RANGE * RSSI_RANGE);
1634
1635 if (sig_qual > 100)
1636 sig_qual = 100;
1637 else if (sig_qual < 1)
1638 sig_qual = 0;
1639
1640 return sig_qual;
1641 }
1642
1643 #ifdef CONFIG_IWLWIFI_DEBUG
1644 static void iwl4965_print_rx_config_cmd(struct iwl_priv *priv)
1645 {
1646 struct iwl_rxon_cmd *rxon = &priv->staging_rxon;
1647 DECLARE_MAC_BUF(mac);
1648
1649 IWL_DEBUG_RADIO("RX CONFIG:\n");
1650 iwl_print_hex_dump(priv, IWL_DL_RADIO, (u8 *) rxon, sizeof(*rxon));
1651 IWL_DEBUG_RADIO("u16 channel: 0x%x\n", le16_to_cpu(rxon->channel));
1652 IWL_DEBUG_RADIO("u32 flags: 0x%08X\n", le32_to_cpu(rxon->flags));
1653 IWL_DEBUG_RADIO("u32 filter_flags: 0x%08x\n",
1654 le32_to_cpu(rxon->filter_flags));
1655 IWL_DEBUG_RADIO("u8 dev_type: 0x%x\n", rxon->dev_type);
1656 IWL_DEBUG_RADIO("u8 ofdm_basic_rates: 0x%02x\n",
1657 rxon->ofdm_basic_rates);
1658 IWL_DEBUG_RADIO("u8 cck_basic_rates: 0x%02x\n", rxon->cck_basic_rates);
1659 IWL_DEBUG_RADIO("u8[6] node_addr: %s\n",
1660 print_mac(mac, rxon->node_addr));
1661 IWL_DEBUG_RADIO("u8[6] bssid_addr: %s\n",
1662 print_mac(mac, rxon->bssid_addr));
1663 IWL_DEBUG_RADIO("u16 assoc_id: 0x%x\n", le16_to_cpu(rxon->assoc_id));
1664 }
1665 #endif
1666
1667 static void iwl4965_enable_interrupts(struct iwl_priv *priv)
1668 {
1669 IWL_DEBUG_ISR("Enabling interrupts\n");
1670 set_bit(STATUS_INT_ENABLED, &priv->status);
1671 iwl_write32(priv, CSR_INT_MASK, CSR_INI_SET_MASK);
1672 }
1673
1674 /* call this function to flush any scheduled tasklet */
1675 static inline void iwl_synchronize_irq(struct iwl_priv *priv)
1676 {
1677 /* wait to make sure we flush pedding tasklet*/
1678 synchronize_irq(priv->pci_dev->irq);
1679 tasklet_kill(&priv->irq_tasklet);
1680 }
1681
1682 static inline void iwl4965_disable_interrupts(struct iwl_priv *priv)
1683 {
1684 clear_bit(STATUS_INT_ENABLED, &priv->status);
1685
1686 /* disable interrupts from uCode/NIC to host */
1687 iwl_write32(priv, CSR_INT_MASK, 0x00000000);
1688
1689 /* acknowledge/clear/reset any interrupts still pending
1690 * from uCode or flow handler (Rx/Tx DMA) */
1691 iwl_write32(priv, CSR_INT, 0xffffffff);
1692 iwl_write32(priv, CSR_FH_INT_STATUS, 0xffffffff);
1693 IWL_DEBUG_ISR("Disabled interrupts\n");
1694 }
1695
1696
1697 /**
1698 * iwl4965_irq_handle_error - called for HW or SW error interrupt from card
1699 */
1700 static void iwl4965_irq_handle_error(struct iwl_priv *priv)
1701 {
1702 /* Set the FW error flag -- cleared on iwl4965_down */
1703 set_bit(STATUS_FW_ERROR, &priv->status);
1704
1705 /* Cancel currently queued command. */
1706 clear_bit(STATUS_HCMD_ACTIVE, &priv->status);
1707
1708 #ifdef CONFIG_IWLWIFI_DEBUG
1709 if (priv->debug_level & IWL_DL_FW_ERRORS) {
1710 iwl_dump_nic_error_log(priv);
1711 iwl_dump_nic_event_log(priv);
1712 iwl4965_print_rx_config_cmd(priv);
1713 }
1714 #endif
1715
1716 wake_up_interruptible(&priv->wait_command_queue);
1717
1718 /* Keep the restart process from trying to send host
1719 * commands by clearing the INIT status bit */
1720 clear_bit(STATUS_READY, &priv->status);
1721
1722 if (!test_bit(STATUS_EXIT_PENDING, &priv->status)) {
1723 IWL_DEBUG(IWL_DL_FW_ERRORS,
1724 "Restarting adapter due to uCode error.\n");
1725
1726 if (iwl_is_associated(priv)) {
1727 memcpy(&priv->recovery_rxon, &priv->active_rxon,
1728 sizeof(priv->recovery_rxon));
1729 priv->error_recovering = 1;
1730 }
1731 if (priv->cfg->mod_params->restart_fw)
1732 queue_work(priv->workqueue, &priv->restart);
1733 }
1734 }
1735
1736 static void iwl4965_error_recovery(struct iwl_priv *priv)
1737 {
1738 unsigned long flags;
1739
1740 memcpy(&priv->staging_rxon, &priv->recovery_rxon,
1741 sizeof(priv->staging_rxon));
1742 priv->staging_rxon.filter_flags &= ~RXON_FILTER_ASSOC_MSK;
1743 iwl4965_commit_rxon(priv);
1744
1745 iwl_rxon_add_station(priv, priv->bssid, 1);
1746
1747 spin_lock_irqsave(&priv->lock, flags);
1748 priv->assoc_id = le16_to_cpu(priv->staging_rxon.assoc_id);
1749 priv->error_recovering = 0;
1750 spin_unlock_irqrestore(&priv->lock, flags);
1751 }
1752
1753 static void iwl4965_irq_tasklet(struct iwl_priv *priv)
1754 {
1755 u32 inta, handled = 0;
1756 u32 inta_fh;
1757 unsigned long flags;
1758 #ifdef CONFIG_IWLWIFI_DEBUG
1759 u32 inta_mask;
1760 #endif
1761
1762 spin_lock_irqsave(&priv->lock, flags);
1763
1764 /* Ack/clear/reset pending uCode interrupts.
1765 * Note: Some bits in CSR_INT are "OR" of bits in CSR_FH_INT_STATUS,
1766 * and will clear only when CSR_FH_INT_STATUS gets cleared. */
1767 inta = iwl_read32(priv, CSR_INT);
1768 iwl_write32(priv, CSR_INT, inta);
1769
1770 /* Ack/clear/reset pending flow-handler (DMA) interrupts.
1771 * Any new interrupts that happen after this, either while we're
1772 * in this tasklet, or later, will show up in next ISR/tasklet. */
1773 inta_fh = iwl_read32(priv, CSR_FH_INT_STATUS);
1774 iwl_write32(priv, CSR_FH_INT_STATUS, inta_fh);
1775
1776 #ifdef CONFIG_IWLWIFI_DEBUG
1777 if (priv->debug_level & IWL_DL_ISR) {
1778 /* just for debug */
1779 inta_mask = iwl_read32(priv, CSR_INT_MASK);
1780 IWL_DEBUG_ISR("inta 0x%08x, enabled 0x%08x, fh 0x%08x\n",
1781 inta, inta_mask, inta_fh);
1782 }
1783 #endif
1784
1785 /* Since CSR_INT and CSR_FH_INT_STATUS reads and clears are not
1786 * atomic, make sure that inta covers all the interrupts that
1787 * we've discovered, even if FH interrupt came in just after
1788 * reading CSR_INT. */
1789 if (inta_fh & CSR49_FH_INT_RX_MASK)
1790 inta |= CSR_INT_BIT_FH_RX;
1791 if (inta_fh & CSR49_FH_INT_TX_MASK)
1792 inta |= CSR_INT_BIT_FH_TX;
1793
1794 /* Now service all interrupt bits discovered above. */
1795 if (inta & CSR_INT_BIT_HW_ERR) {
1796 IWL_ERROR("Microcode HW error detected. Restarting.\n");
1797
1798 /* Tell the device to stop sending interrupts */
1799 iwl4965_disable_interrupts(priv);
1800
1801 iwl4965_irq_handle_error(priv);
1802
1803 handled |= CSR_INT_BIT_HW_ERR;
1804
1805 spin_unlock_irqrestore(&priv->lock, flags);
1806
1807 return;
1808 }
1809
1810 #ifdef CONFIG_IWLWIFI_DEBUG
1811 if (priv->debug_level & (IWL_DL_ISR)) {
1812 /* NIC fires this, but we don't use it, redundant with WAKEUP */
1813 if (inta & CSR_INT_BIT_SCD)
1814 IWL_DEBUG_ISR("Scheduler finished to transmit "
1815 "the frame/frames.\n");
1816
1817 /* Alive notification via Rx interrupt will do the real work */
1818 if (inta & CSR_INT_BIT_ALIVE)
1819 IWL_DEBUG_ISR("Alive interrupt\n");
1820 }
1821 #endif
1822 /* Safely ignore these bits for debug checks below */
1823 inta &= ~(CSR_INT_BIT_SCD | CSR_INT_BIT_ALIVE);
1824
1825 /* HW RF KILL switch toggled */
1826 if (inta & CSR_INT_BIT_RF_KILL) {
1827 int hw_rf_kill = 0;
1828 if (!(iwl_read32(priv, CSR_GP_CNTRL) &
1829 CSR_GP_CNTRL_REG_FLAG_HW_RF_KILL_SW))
1830 hw_rf_kill = 1;
1831
1832 IWL_DEBUG(IWL_DL_RF_KILL, "RF_KILL bit toggled to %s.\n",
1833 hw_rf_kill ? "disable radio":"enable radio");
1834
1835 /* Queue restart only if RF_KILL switch was set to "kill"
1836 * when we loaded driver, and is now set to "enable".
1837 * After we're Alive, RF_KILL gets handled by
1838 * iwl4965_rx_card_state_notif() */
1839 if (!hw_rf_kill && !test_bit(STATUS_ALIVE, &priv->status)) {
1840 clear_bit(STATUS_RF_KILL_HW, &priv->status);
1841 queue_work(priv->workqueue, &priv->restart);
1842 }
1843
1844 handled |= CSR_INT_BIT_RF_KILL;
1845 }
1846
1847 /* Chip got too hot and stopped itself */
1848 if (inta & CSR_INT_BIT_CT_KILL) {
1849 IWL_ERROR("Microcode CT kill error detected.\n");
1850 handled |= CSR_INT_BIT_CT_KILL;
1851 }
1852
1853 /* Error detected by uCode */
1854 if (inta & CSR_INT_BIT_SW_ERR) {
1855 IWL_ERROR("Microcode SW error detected. Restarting 0x%X.\n",
1856 inta);
1857 iwl4965_irq_handle_error(priv);
1858 handled |= CSR_INT_BIT_SW_ERR;
1859 }
1860
1861 /* uCode wakes up after power-down sleep */
1862 if (inta & CSR_INT_BIT_WAKEUP) {
1863 IWL_DEBUG_ISR("Wakeup interrupt\n");
1864 iwl_rx_queue_update_write_ptr(priv, &priv->rxq);
1865 iwl_txq_update_write_ptr(priv, &priv->txq[0]);
1866 iwl_txq_update_write_ptr(priv, &priv->txq[1]);
1867 iwl_txq_update_write_ptr(priv, &priv->txq[2]);
1868 iwl_txq_update_write_ptr(priv, &priv->txq[3]);
1869 iwl_txq_update_write_ptr(priv, &priv->txq[4]);
1870 iwl_txq_update_write_ptr(priv, &priv->txq[5]);
1871
1872 handled |= CSR_INT_BIT_WAKEUP;
1873 }
1874
1875 /* All uCode command responses, including Tx command responses,
1876 * Rx "responses" (frame-received notification), and other
1877 * notifications from uCode come through here*/
1878 if (inta & (CSR_INT_BIT_FH_RX | CSR_INT_BIT_SW_RX)) {
1879 iwl_rx_handle(priv);
1880 handled |= (CSR_INT_BIT_FH_RX | CSR_INT_BIT_SW_RX);
1881 }
1882
1883 if (inta & CSR_INT_BIT_FH_TX) {
1884 IWL_DEBUG_ISR("Tx interrupt\n");
1885 handled |= CSR_INT_BIT_FH_TX;
1886 /* FH finished to write, send event */
1887 priv->ucode_write_complete = 1;
1888 wake_up_interruptible(&priv->wait_command_queue);
1889 }
1890
1891 if (inta & ~handled)
1892 IWL_ERROR("Unhandled INTA bits 0x%08x\n", inta & ~handled);
1893
1894 if (inta & ~CSR_INI_SET_MASK) {
1895 IWL_WARNING("Disabled INTA bits 0x%08x were pending\n",
1896 inta & ~CSR_INI_SET_MASK);
1897 IWL_WARNING(" with FH_INT = 0x%08x\n", inta_fh);
1898 }
1899
1900 /* Re-enable all interrupts */
1901 /* only Re-enable if diabled by irq */
1902 if (test_bit(STATUS_INT_ENABLED, &priv->status))
1903 iwl4965_enable_interrupts(priv);
1904
1905 #ifdef CONFIG_IWLWIFI_DEBUG
1906 if (priv->debug_level & (IWL_DL_ISR)) {
1907 inta = iwl_read32(priv, CSR_INT);
1908 inta_mask = iwl_read32(priv, CSR_INT_MASK);
1909 inta_fh = iwl_read32(priv, CSR_FH_INT_STATUS);
1910 IWL_DEBUG_ISR("End inta 0x%08x, enabled 0x%08x, fh 0x%08x, "
1911 "flags 0x%08lx\n", inta, inta_mask, inta_fh, flags);
1912 }
1913 #endif
1914 spin_unlock_irqrestore(&priv->lock, flags);
1915 }
1916
1917 static irqreturn_t iwl4965_isr(int irq, void *data)
1918 {
1919 struct iwl_priv *priv = data;
1920 u32 inta, inta_mask;
1921 u32 inta_fh;
1922 if (!priv)
1923 return IRQ_NONE;
1924
1925 spin_lock(&priv->lock);
1926
1927 /* Disable (but don't clear!) interrupts here to avoid
1928 * back-to-back ISRs and sporadic interrupts from our NIC.
1929 * If we have something to service, the tasklet will re-enable ints.
1930 * If we *don't* have something, we'll re-enable before leaving here. */
1931 inta_mask = iwl_read32(priv, CSR_INT_MASK); /* just for debug */
1932 iwl_write32(priv, CSR_INT_MASK, 0x00000000);
1933
1934 /* Discover which interrupts are active/pending */
1935 inta = iwl_read32(priv, CSR_INT);
1936 inta_fh = iwl_read32(priv, CSR_FH_INT_STATUS);
1937
1938 /* Ignore interrupt if there's nothing in NIC to service.
1939 * This may be due to IRQ shared with another device,
1940 * or due to sporadic interrupts thrown from our NIC. */
1941 if (!inta && !inta_fh) {
1942 IWL_DEBUG_ISR("Ignore interrupt, inta == 0, inta_fh == 0\n");
1943 goto none;
1944 }
1945
1946 if ((inta == 0xFFFFFFFF) || ((inta & 0xFFFFFFF0) == 0xa5a5a5a0)) {
1947 /* Hardware disappeared. It might have already raised
1948 * an interrupt */
1949 IWL_WARNING("HARDWARE GONE?? INTA == 0x%080x\n", inta);
1950 goto unplugged;
1951 }
1952
1953 IWL_DEBUG_ISR("ISR inta 0x%08x, enabled 0x%08x, fh 0x%08x\n",
1954 inta, inta_mask, inta_fh);
1955
1956 inta &= ~CSR_INT_BIT_SCD;
1957
1958 /* iwl4965_irq_tasklet() will service interrupts and re-enable them */
1959 if (likely(inta || inta_fh))
1960 tasklet_schedule(&priv->irq_tasklet);
1961
1962 unplugged:
1963 spin_unlock(&priv->lock);
1964 return IRQ_HANDLED;
1965
1966 none:
1967 /* re-enable interrupts here since we don't have anything to service. */
1968 /* only Re-enable if diabled by irq */
1969 if (test_bit(STATUS_INT_ENABLED, &priv->status))
1970 iwl4965_enable_interrupts(priv);
1971 spin_unlock(&priv->lock);
1972 return IRQ_NONE;
1973 }
1974
1975 /******************************************************************************
1976 *
1977 * uCode download functions
1978 *
1979 ******************************************************************************/
1980
1981 static void iwl4965_dealloc_ucode_pci(struct iwl_priv *priv)
1982 {
1983 iwl_free_fw_desc(priv->pci_dev, &priv->ucode_code);
1984 iwl_free_fw_desc(priv->pci_dev, &priv->ucode_data);
1985 iwl_free_fw_desc(priv->pci_dev, &priv->ucode_data_backup);
1986 iwl_free_fw_desc(priv->pci_dev, &priv->ucode_init);
1987 iwl_free_fw_desc(priv->pci_dev, &priv->ucode_init_data);
1988 iwl_free_fw_desc(priv->pci_dev, &priv->ucode_boot);
1989 }
1990
1991 static void iwl4965_nic_start(struct iwl_priv *priv)
1992 {
1993 /* Remove all resets to allow NIC to operate */
1994 iwl_write32(priv, CSR_RESET, 0);
1995 }
1996
1997
1998 /**
1999 * iwl4965_read_ucode - Read uCode images from disk file.
2000 *
2001 * Copy into buffers for card to fetch via bus-mastering
2002 */
2003 static int iwl4965_read_ucode(struct iwl_priv *priv)
2004 {
2005 struct iwl_ucode *ucode;
2006 int ret;
2007 const struct firmware *ucode_raw;
2008 const char *name = priv->cfg->fw_name;
2009 u8 *src;
2010 size_t len;
2011 u32 ver, inst_size, data_size, init_size, init_data_size, boot_size;
2012
2013 /* Ask kernel firmware_class module to get the boot firmware off disk.
2014 * request_firmware() is synchronous, file is in memory on return. */
2015 ret = request_firmware(&ucode_raw, name, &priv->pci_dev->dev);
2016 if (ret < 0) {
2017 IWL_ERROR("%s firmware file req failed: Reason %d\n",
2018 name, ret);
2019 goto error;
2020 }
2021
2022 IWL_DEBUG_INFO("Got firmware '%s' file (%zd bytes) from disk\n",
2023 name, ucode_raw->size);
2024
2025 /* Make sure that we got at least our header! */
2026 if (ucode_raw->size < sizeof(*ucode)) {
2027 IWL_ERROR("File size way too small!\n");
2028 ret = -EINVAL;
2029 goto err_release;
2030 }
2031
2032 /* Data from ucode file: header followed by uCode images */
2033 ucode = (void *)ucode_raw->data;
2034
2035 ver = le32_to_cpu(ucode->ver);
2036 inst_size = le32_to_cpu(ucode->inst_size);
2037 data_size = le32_to_cpu(ucode->data_size);
2038 init_size = le32_to_cpu(ucode->init_size);
2039 init_data_size = le32_to_cpu(ucode->init_data_size);
2040 boot_size = le32_to_cpu(ucode->boot_size);
2041
2042 IWL_DEBUG_INFO("f/w package hdr ucode version = 0x%x\n", ver);
2043 IWL_DEBUG_INFO("f/w package hdr runtime inst size = %u\n",
2044 inst_size);
2045 IWL_DEBUG_INFO("f/w package hdr runtime data size = %u\n",
2046 data_size);
2047 IWL_DEBUG_INFO("f/w package hdr init inst size = %u\n",
2048 init_size);
2049 IWL_DEBUG_INFO("f/w package hdr init data size = %u\n",
2050 init_data_size);
2051 IWL_DEBUG_INFO("f/w package hdr boot inst size = %u\n",
2052 boot_size);
2053
2054 /* Verify size of file vs. image size info in file's header */
2055 if (ucode_raw->size < sizeof(*ucode) +
2056 inst_size + data_size + init_size +
2057 init_data_size + boot_size) {
2058
2059 IWL_DEBUG_INFO("uCode file size %d too small\n",
2060 (int)ucode_raw->size);
2061 ret = -EINVAL;
2062 goto err_release;
2063 }
2064
2065 /* Verify that uCode images will fit in card's SRAM */
2066 if (inst_size > priv->hw_params.max_inst_size) {
2067 IWL_DEBUG_INFO("uCode instr len %d too large to fit in\n",
2068 inst_size);
2069 ret = -EINVAL;
2070 goto err_release;
2071 }
2072
2073 if (data_size > priv->hw_params.max_data_size) {
2074 IWL_DEBUG_INFO("uCode data len %d too large to fit in\n",
2075 data_size);
2076 ret = -EINVAL;
2077 goto err_release;
2078 }
2079 if (init_size > priv->hw_params.max_inst_size) {
2080 IWL_DEBUG_INFO
2081 ("uCode init instr len %d too large to fit in\n",
2082 init_size);
2083 ret = -EINVAL;
2084 goto err_release;
2085 }
2086 if (init_data_size > priv->hw_params.max_data_size) {
2087 IWL_DEBUG_INFO
2088 ("uCode init data len %d too large to fit in\n",
2089 init_data_size);
2090 ret = -EINVAL;
2091 goto err_release;
2092 }
2093 if (boot_size > priv->hw_params.max_bsm_size) {
2094 IWL_DEBUG_INFO
2095 ("uCode boot instr len %d too large to fit in\n",
2096 boot_size);
2097 ret = -EINVAL;
2098 goto err_release;
2099 }
2100
2101 /* Allocate ucode buffers for card's bus-master loading ... */
2102
2103 /* Runtime instructions and 2 copies of data:
2104 * 1) unmodified from disk
2105 * 2) backup cache for save/restore during power-downs */
2106 priv->ucode_code.len = inst_size;
2107 iwl_alloc_fw_desc(priv->pci_dev, &priv->ucode_code);
2108
2109 priv->ucode_data.len = data_size;
2110 iwl_alloc_fw_desc(priv->pci_dev, &priv->ucode_data);
2111
2112 priv->ucode_data_backup.len = data_size;
2113 iwl_alloc_fw_desc(priv->pci_dev, &priv->ucode_data_backup);
2114
2115 /* Initialization instructions and data */
2116 if (init_size && init_data_size) {
2117 priv->ucode_init.len = init_size;
2118 iwl_alloc_fw_desc(priv->pci_dev, &priv->ucode_init);
2119
2120 priv->ucode_init_data.len = init_data_size;
2121 iwl_alloc_fw_desc(priv->pci_dev, &priv->ucode_init_data);
2122
2123 if (!priv->ucode_init.v_addr || !priv->ucode_init_data.v_addr)
2124 goto err_pci_alloc;
2125 }
2126
2127 /* Bootstrap (instructions only, no data) */
2128 if (boot_size) {
2129 priv->ucode_boot.len = boot_size;
2130 iwl_alloc_fw_desc(priv->pci_dev, &priv->ucode_boot);
2131
2132 if (!priv->ucode_boot.v_addr)
2133 goto err_pci_alloc;
2134 }
2135
2136 /* Copy images into buffers for card's bus-master reads ... */
2137
2138 /* Runtime instructions (first block of data in file) */
2139 src = &ucode->data[0];
2140 len = priv->ucode_code.len;
2141 IWL_DEBUG_INFO("Copying (but not loading) uCode instr len %Zd\n", len);
2142 memcpy(priv->ucode_code.v_addr, src, len);
2143 IWL_DEBUG_INFO("uCode instr buf vaddr = 0x%p, paddr = 0x%08x\n",
2144 priv->ucode_code.v_addr, (u32)priv->ucode_code.p_addr);
2145
2146 /* Runtime data (2nd block)
2147 * NOTE: Copy into backup buffer will be done in iwl4965_up() */
2148 src = &ucode->data[inst_size];
2149 len = priv->ucode_data.len;
2150 IWL_DEBUG_INFO("Copying (but not loading) uCode data len %Zd\n", len);
2151 memcpy(priv->ucode_data.v_addr, src, len);
2152 memcpy(priv->ucode_data_backup.v_addr, src, len);
2153
2154 /* Initialization instructions (3rd block) */
2155 if (init_size) {
2156 src = &ucode->data[inst_size + data_size];
2157 len = priv->ucode_init.len;
2158 IWL_DEBUG_INFO("Copying (but not loading) init instr len %Zd\n",
2159 len);
2160 memcpy(priv->ucode_init.v_addr, src, len);
2161 }
2162
2163 /* Initialization data (4th block) */
2164 if (init_data_size) {
2165 src = &ucode->data[inst_size + data_size + init_size];
2166 len = priv->ucode_init_data.len;
2167 IWL_DEBUG_INFO("Copying (but not loading) init data len %Zd\n",
2168 len);
2169 memcpy(priv->ucode_init_data.v_addr, src, len);
2170 }
2171
2172 /* Bootstrap instructions (5th block) */
2173 src = &ucode->data[inst_size + data_size + init_size + init_data_size];
2174 len = priv->ucode_boot.len;
2175 IWL_DEBUG_INFO("Copying (but not loading) boot instr len %Zd\n", len);
2176 memcpy(priv->ucode_boot.v_addr, src, len);
2177
2178 /* We have our copies now, allow OS release its copies */
2179 release_firmware(ucode_raw);
2180 return 0;
2181
2182 err_pci_alloc:
2183 IWL_ERROR("failed to allocate pci memory\n");
2184 ret = -ENOMEM;
2185 iwl4965_dealloc_ucode_pci(priv);
2186
2187 err_release:
2188 release_firmware(ucode_raw);
2189
2190 error:
2191 return ret;
2192 }
2193
2194 /**
2195 * iwl_alive_start - called after REPLY_ALIVE notification received
2196 * from protocol/runtime uCode (initialization uCode's
2197 * Alive gets handled by iwl_init_alive_start()).
2198 */
2199 static void iwl_alive_start(struct iwl_priv *priv)
2200 {
2201 int ret = 0;
2202
2203 IWL_DEBUG_INFO("Runtime Alive received.\n");
2204
2205 if (priv->card_alive.is_valid != UCODE_VALID_OK) {
2206 /* We had an error bringing up the hardware, so take it
2207 * all the way back down so we can try again */
2208 IWL_DEBUG_INFO("Alive failed.\n");
2209 goto restart;
2210 }
2211
2212 /* Initialize uCode has loaded Runtime uCode ... verify inst image.
2213 * This is a paranoid check, because we would not have gotten the
2214 * "runtime" alive if code weren't properly loaded. */
2215 if (iwl_verify_ucode(priv)) {
2216 /* Runtime instruction load was bad;
2217 * take it all the way back down so we can try again */
2218 IWL_DEBUG_INFO("Bad runtime uCode load.\n");
2219 goto restart;
2220 }
2221
2222 iwlcore_clear_stations_table(priv);
2223 ret = priv->cfg->ops->lib->alive_notify(priv);
2224 if (ret) {
2225 IWL_WARNING("Could not complete ALIVE transition [ntf]: %d\n",
2226 ret);
2227 goto restart;
2228 }
2229
2230 /* After the ALIVE response, we can send host commands to 4965 uCode */
2231 set_bit(STATUS_ALIVE, &priv->status);
2232
2233 if (iwl_is_rfkill(priv))
2234 return;
2235
2236 ieee80211_wake_queues(priv->hw);
2237
2238 priv->active_rate = priv->rates_mask;
2239 priv->active_rate_basic = priv->rates_mask & IWL_BASIC_RATES_MASK;
2240
2241 if (iwl_is_associated(priv)) {
2242 struct iwl_rxon_cmd *active_rxon =
2243 (struct iwl_rxon_cmd *)&priv->active_rxon;
2244
2245 memcpy(&priv->staging_rxon, &priv->active_rxon,
2246 sizeof(priv->staging_rxon));
2247 active_rxon->filter_flags &= ~RXON_FILTER_ASSOC_MSK;
2248 } else {
2249 /* Initialize our rx_config data */
2250 iwl4965_connection_init_rx_config(priv);
2251 memcpy(priv->staging_rxon.node_addr, priv->mac_addr, ETH_ALEN);
2252 }
2253
2254 /* Configure Bluetooth device coexistence support */
2255 iwl4965_send_bt_config(priv);
2256
2257 iwl_reset_run_time_calib(priv);
2258
2259 /* Configure the adapter for unassociated operation */
2260 iwl4965_commit_rxon(priv);
2261
2262 /* At this point, the NIC is initialized and operational */
2263 iwl_rf_kill_ct_config(priv);
2264
2265 iwl_leds_register(priv);
2266
2267 IWL_DEBUG_INFO("ALIVE processing complete.\n");
2268 set_bit(STATUS_READY, &priv->status);
2269 wake_up_interruptible(&priv->wait_command_queue);
2270
2271 if (priv->error_recovering)
2272 iwl4965_error_recovery(priv);
2273
2274 iwl_power_update_mode(priv, 1);
2275 ieee80211_notify_mac(priv->hw, IEEE80211_NOTIFY_RE_ASSOC);
2276
2277 if (test_and_clear_bit(STATUS_MODE_PENDING, &priv->status))
2278 iwl4965_set_mode(priv, priv->iw_mode);
2279
2280 return;
2281
2282 restart:
2283 queue_work(priv->workqueue, &priv->restart);
2284 }
2285
2286 static void iwl_cancel_deferred_work(struct iwl_priv *priv);
2287
2288 static void __iwl4965_down(struct iwl_priv *priv)
2289 {
2290 unsigned long flags;
2291 int exit_pending = test_bit(STATUS_EXIT_PENDING, &priv->status);
2292
2293 IWL_DEBUG_INFO(DRV_NAME " is going down\n");
2294
2295 if (!exit_pending)
2296 set_bit(STATUS_EXIT_PENDING, &priv->status);
2297
2298 iwl_leds_unregister(priv);
2299
2300 iwlcore_clear_stations_table(priv);
2301
2302 /* Unblock any waiting calls */
2303 wake_up_interruptible_all(&priv->wait_command_queue);
2304
2305 /* Wipe out the EXIT_PENDING status bit if we are not actually
2306 * exiting the module */
2307 if (!exit_pending)
2308 clear_bit(STATUS_EXIT_PENDING, &priv->status);
2309
2310 /* stop and reset the on-board processor */
2311 iwl_write32(priv, CSR_RESET, CSR_RESET_REG_FLAG_NEVO_RESET);
2312
2313 /* tell the device to stop sending interrupts */
2314 spin_lock_irqsave(&priv->lock, flags);
2315 iwl4965_disable_interrupts(priv);
2316 spin_unlock_irqrestore(&priv->lock, flags);
2317 iwl_synchronize_irq(priv);
2318
2319 if (priv->mac80211_registered)
2320 ieee80211_stop_queues(priv->hw);
2321
2322 /* If we have not previously called iwl4965_init() then
2323 * clear all bits but the RF Kill and SUSPEND bits and return */
2324 if (!iwl_is_init(priv)) {
2325 priv->status = test_bit(STATUS_RF_KILL_HW, &priv->status) <<
2326 STATUS_RF_KILL_HW |
2327 test_bit(STATUS_RF_KILL_SW, &priv->status) <<
2328 STATUS_RF_KILL_SW |
2329 test_bit(STATUS_GEO_CONFIGURED, &priv->status) <<
2330 STATUS_GEO_CONFIGURED |
2331 test_bit(STATUS_IN_SUSPEND, &priv->status) <<
2332 STATUS_IN_SUSPEND;
2333 goto exit;
2334 }
2335
2336 /* ...otherwise clear out all the status bits but the RF Kill and
2337 * SUSPEND bits and continue taking the NIC down. */
2338 priv->status &= test_bit(STATUS_RF_KILL_HW, &priv->status) <<
2339 STATUS_RF_KILL_HW |
2340 test_bit(STATUS_RF_KILL_SW, &priv->status) <<
2341 STATUS_RF_KILL_SW |
2342 test_bit(STATUS_GEO_CONFIGURED, &priv->status) <<
2343 STATUS_GEO_CONFIGURED |
2344 test_bit(STATUS_IN_SUSPEND, &priv->status) <<
2345 STATUS_IN_SUSPEND |
2346 test_bit(STATUS_FW_ERROR, &priv->status) <<
2347 STATUS_FW_ERROR;
2348
2349 spin_lock_irqsave(&priv->lock, flags);
2350 iwl_clear_bit(priv, CSR_GP_CNTRL,
2351 CSR_GP_CNTRL_REG_FLAG_MAC_ACCESS_REQ);
2352 spin_unlock_irqrestore(&priv->lock, flags);
2353
2354 iwl_txq_ctx_stop(priv);
2355 iwl_rxq_stop(priv);
2356
2357 spin_lock_irqsave(&priv->lock, flags);
2358 if (!iwl_grab_nic_access(priv)) {
2359 iwl_write_prph(priv, APMG_CLK_DIS_REG,
2360 APMG_CLK_VAL_DMA_CLK_RQT);
2361 iwl_release_nic_access(priv);
2362 }
2363 spin_unlock_irqrestore(&priv->lock, flags);
2364
2365 udelay(5);
2366
2367 /* FIXME: apm_ops.suspend(priv) */
2368 priv->cfg->ops->lib->apm_ops.reset(priv);
2369 priv->cfg->ops->lib->free_shared_mem(priv);
2370
2371 exit:
2372 memset(&priv->card_alive, 0, sizeof(struct iwl_alive_resp));
2373
2374 if (priv->ibss_beacon)
2375 dev_kfree_skb(priv->ibss_beacon);
2376 priv->ibss_beacon = NULL;
2377
2378 /* clear out any free frames */
2379 iwl_clear_free_frames(priv);
2380 }
2381
2382 static void iwl4965_down(struct iwl_priv *priv)
2383 {
2384 mutex_lock(&priv->mutex);
2385 __iwl4965_down(priv);
2386 mutex_unlock(&priv->mutex);
2387
2388 iwl_cancel_deferred_work(priv);
2389 }
2390
2391 #define MAX_HW_RESTARTS 5
2392
2393 static int __iwl4965_up(struct iwl_priv *priv)
2394 {
2395 int i;
2396 int ret;
2397
2398 if (test_bit(STATUS_EXIT_PENDING, &priv->status)) {
2399 IWL_WARNING("Exit pending; will not bring the NIC up\n");
2400 return -EIO;
2401 }
2402
2403 if (!priv->ucode_data_backup.v_addr || !priv->ucode_data.v_addr) {
2404 IWL_ERROR("ucode not available for device bringup\n");
2405 return -EIO;
2406 }
2407
2408 /* If platform's RF_KILL switch is NOT set to KILL */
2409 if (iwl_read32(priv, CSR_GP_CNTRL) &
2410 CSR_GP_CNTRL_REG_FLAG_HW_RF_KILL_SW)
2411 clear_bit(STATUS_RF_KILL_HW, &priv->status);
2412 else {
2413 set_bit(STATUS_RF_KILL_HW, &priv->status);
2414 if (!test_bit(STATUS_IN_SUSPEND, &priv->status)) {
2415 iwl_rfkill_set_hw_state(priv);
2416 IWL_WARNING("Radio disabled by HW RF Kill switch\n");
2417 return -ENODEV;
2418 }
2419 }
2420
2421 iwl_rfkill_set_hw_state(priv);
2422 iwl_write32(priv, CSR_INT, 0xFFFFFFFF);
2423
2424 ret = priv->cfg->ops->lib->alloc_shared_mem(priv);
2425 if (ret) {
2426 IWL_ERROR("Unable to allocate shared memory\n");
2427 return ret;
2428 }
2429
2430 ret = iwl_hw_nic_init(priv);
2431 if (ret) {
2432 IWL_ERROR("Unable to init nic\n");
2433 return ret;
2434 }
2435
2436 /* make sure rfkill handshake bits are cleared */
2437 iwl_write32(priv, CSR_UCODE_DRV_GP1_CLR, CSR_UCODE_SW_BIT_RFKILL);
2438 iwl_write32(priv, CSR_UCODE_DRV_GP1_CLR,
2439 CSR_UCODE_DRV_GP1_BIT_CMD_BLOCKED);
2440
2441 /* clear (again), then enable host interrupts */
2442 iwl_write32(priv, CSR_INT, 0xFFFFFFFF);
2443 iwl4965_enable_interrupts(priv);
2444
2445 /* really make sure rfkill handshake bits are cleared */
2446 iwl_write32(priv, CSR_UCODE_DRV_GP1_CLR, CSR_UCODE_SW_BIT_RFKILL);
2447 iwl_write32(priv, CSR_UCODE_DRV_GP1_CLR, CSR_UCODE_SW_BIT_RFKILL);
2448
2449 /* Copy original ucode data image from disk into backup cache.
2450 * This will be used to initialize the on-board processor's
2451 * data SRAM for a clean start when the runtime program first loads. */
2452 memcpy(priv->ucode_data_backup.v_addr, priv->ucode_data.v_addr,
2453 priv->ucode_data.len);
2454
2455 /* We return success when we resume from suspend and rf_kill is on. */
2456 if (test_bit(STATUS_RF_KILL_HW, &priv->status) ||
2457 test_bit(STATUS_RF_KILL_SW, &priv->status))
2458 return 0;
2459
2460 for (i = 0; i < MAX_HW_RESTARTS; i++) {
2461
2462 iwlcore_clear_stations_table(priv);
2463
2464 /* load bootstrap state machine,
2465 * load bootstrap program into processor's memory,
2466 * prepare to load the "initialize" uCode */
2467 ret = priv->cfg->ops->lib->load_ucode(priv);
2468
2469 if (ret) {
2470 IWL_ERROR("Unable to set up bootstrap uCode: %d\n", ret);
2471 continue;
2472 }
2473
2474 /* Clear out the uCode error bit if it is set */
2475 clear_bit(STATUS_FW_ERROR, &priv->status);
2476
2477 /* start card; "initialize" will load runtime ucode */
2478 iwl4965_nic_start(priv);
2479
2480 IWL_DEBUG_INFO(DRV_NAME " is coming up\n");
2481
2482 return 0;
2483 }
2484
2485 set_bit(STATUS_EXIT_PENDING, &priv->status);
2486 __iwl4965_down(priv);
2487 clear_bit(STATUS_EXIT_PENDING, &priv->status);
2488
2489 /* tried to restart and config the device for as long as our
2490 * patience could withstand */
2491 IWL_ERROR("Unable to initialize device after %d attempts.\n", i);
2492 return -EIO;
2493 }
2494
2495
2496 /*****************************************************************************
2497 *
2498 * Workqueue callbacks
2499 *
2500 *****************************************************************************/
2501
2502 static void iwl_bg_init_alive_start(struct work_struct *data)
2503 {
2504 struct iwl_priv *priv =
2505 container_of(data, struct iwl_priv, init_alive_start.work);
2506
2507 if (test_bit(STATUS_EXIT_PENDING, &priv->status))
2508 return;
2509
2510 mutex_lock(&priv->mutex);
2511 priv->cfg->ops->lib->init_alive_start(priv);
2512 mutex_unlock(&priv->mutex);
2513 }
2514
2515 static void iwl_bg_alive_start(struct work_struct *data)
2516 {
2517 struct iwl_priv *priv =
2518 container_of(data, struct iwl_priv, alive_start.work);
2519
2520 if (test_bit(STATUS_EXIT_PENDING, &priv->status))
2521 return;
2522
2523 mutex_lock(&priv->mutex);
2524 iwl_alive_start(priv);
2525 mutex_unlock(&priv->mutex);
2526 }
2527
2528 static void iwl4965_bg_rf_kill(struct work_struct *work)
2529 {
2530 struct iwl_priv *priv = container_of(work, struct iwl_priv, rf_kill);
2531
2532 wake_up_interruptible(&priv->wait_command_queue);
2533
2534 if (test_bit(STATUS_EXIT_PENDING, &priv->status))
2535 return;
2536
2537 mutex_lock(&priv->mutex);
2538
2539 if (!iwl_is_rfkill(priv)) {
2540 IWL_DEBUG(IWL_DL_RF_KILL,
2541 "HW and/or SW RF Kill no longer active, restarting "
2542 "device\n");
2543 if (!test_bit(STATUS_EXIT_PENDING, &priv->status))
2544 queue_work(priv->workqueue, &priv->restart);
2545 } else {
2546 /* make sure mac80211 stop sending Tx frame */
2547 if (priv->mac80211_registered)
2548 ieee80211_stop_queues(priv->hw);
2549
2550 if (!test_bit(STATUS_RF_KILL_HW, &priv->status))
2551 IWL_DEBUG_RF_KILL("Can not turn radio back on - "
2552 "disabled by SW switch\n");
2553 else
2554 IWL_WARNING("Radio Frequency Kill Switch is On:\n"
2555 "Kill switch must be turned off for "
2556 "wireless networking to work.\n");
2557 }
2558 iwl_rfkill_set_hw_state(priv);
2559
2560 mutex_unlock(&priv->mutex);
2561 }
2562
2563 static void iwl4965_bg_set_monitor(struct work_struct *work)
2564 {
2565 struct iwl_priv *priv = container_of(work,
2566 struct iwl_priv, set_monitor);
2567 int ret;
2568
2569 IWL_DEBUG(IWL_DL_STATE, "setting monitor mode\n");
2570
2571 mutex_lock(&priv->mutex);
2572
2573 ret = iwl4965_set_mode(priv, IEEE80211_IF_TYPE_MNTR);
2574
2575 if (ret) {
2576 if (ret == -EAGAIN)
2577 IWL_DEBUG(IWL_DL_STATE, "leave - not ready\n");
2578 else
2579 IWL_ERROR("iwl4965_set_mode() failed ret = %d\n", ret);
2580 }
2581
2582 mutex_unlock(&priv->mutex);
2583 }
2584
2585 static void iwl_bg_run_time_calib_work(struct work_struct *work)
2586 {
2587 struct iwl_priv *priv = container_of(work, struct iwl_priv,
2588 run_time_calib_work);
2589
2590 mutex_lock(&priv->mutex);
2591
2592 if (test_bit(STATUS_EXIT_PENDING, &priv->status) ||
2593 test_bit(STATUS_SCANNING, &priv->status)) {
2594 mutex_unlock(&priv->mutex);
2595 return;
2596 }
2597
2598 if (priv->start_calib) {
2599 iwl_chain_noise_calibration(priv, &priv->statistics);
2600
2601 iwl_sensitivity_calibration(priv, &priv->statistics);
2602 }
2603
2604 mutex_unlock(&priv->mutex);
2605 return;
2606 }
2607
2608 static void iwl4965_bg_up(struct work_struct *data)
2609 {
2610 struct iwl_priv *priv = container_of(data, struct iwl_priv, up);
2611
2612 if (test_bit(STATUS_EXIT_PENDING, &priv->status))
2613 return;
2614
2615 mutex_lock(&priv->mutex);
2616 __iwl4965_up(priv);
2617 mutex_unlock(&priv->mutex);
2618 }
2619
2620 static void iwl4965_bg_restart(struct work_struct *data)
2621 {
2622 struct iwl_priv *priv = container_of(data, struct iwl_priv, restart);
2623
2624 if (test_bit(STATUS_EXIT_PENDING, &priv->status))
2625 return;
2626
2627 iwl4965_down(priv);
2628 queue_work(priv->workqueue, &priv->up);
2629 }
2630
2631 static void iwl4965_bg_rx_replenish(struct work_struct *data)
2632 {
2633 struct iwl_priv *priv =
2634 container_of(data, struct iwl_priv, rx_replenish);
2635
2636 if (test_bit(STATUS_EXIT_PENDING, &priv->status))
2637 return;
2638
2639 mutex_lock(&priv->mutex);
2640 iwl_rx_replenish(priv);
2641 mutex_unlock(&priv->mutex);
2642 }
2643
2644 #define IWL_DELAY_NEXT_SCAN (HZ*2)
2645
2646 static void iwl4965_post_associate(struct iwl_priv *priv)
2647 {
2648 struct ieee80211_conf *conf = NULL;
2649 int ret = 0;
2650 DECLARE_MAC_BUF(mac);
2651
2652 if (priv->iw_mode == IEEE80211_IF_TYPE_AP) {
2653 IWL_ERROR("%s Should not be called in AP mode\n", __FUNCTION__);
2654 return;
2655 }
2656
2657 IWL_DEBUG_ASSOC("Associated as %d to: %s\n",
2658 priv->assoc_id,
2659 print_mac(mac, priv->active_rxon.bssid_addr));
2660
2661
2662 if (test_bit(STATUS_EXIT_PENDING, &priv->status))
2663 return;
2664
2665
2666 if (!priv->vif || !priv->is_open)
2667 return;
2668
2669 iwl_scan_cancel_timeout(priv, 200);
2670
2671 conf = ieee80211_get_hw_conf(priv->hw);
2672
2673 priv->staging_rxon.filter_flags &= ~RXON_FILTER_ASSOC_MSK;
2674 iwl4965_commit_rxon(priv);
2675
2676 memset(&priv->rxon_timing, 0, sizeof(struct iwl4965_rxon_time_cmd));
2677 iwl4965_setup_rxon_timing(priv);
2678 ret = iwl_send_cmd_pdu(priv, REPLY_RXON_TIMING,
2679 sizeof(priv->rxon_timing), &priv->rxon_timing);
2680 if (ret)
2681 IWL_WARNING("REPLY_RXON_TIMING failed - "
2682 "Attempting to continue.\n");
2683
2684 priv->staging_rxon.filter_flags |= RXON_FILTER_ASSOC_MSK;
2685
2686 if (priv->current_ht_config.is_ht)
2687 iwl_set_rxon_ht(priv, &priv->current_ht_config);
2688
2689 iwl_set_rxon_chain(priv);
2690 priv->staging_rxon.assoc_id = cpu_to_le16(priv->assoc_id);
2691
2692 IWL_DEBUG_ASSOC("assoc id %d beacon interval %d\n",
2693 priv->assoc_id, priv->beacon_int);
2694
2695 if (priv->assoc_capability & WLAN_CAPABILITY_SHORT_PREAMBLE)
2696 priv->staging_rxon.flags |= RXON_FLG_SHORT_PREAMBLE_MSK;
2697 else
2698 priv->staging_rxon.flags &= ~RXON_FLG_SHORT_PREAMBLE_MSK;
2699
2700 if (priv->staging_rxon.flags & RXON_FLG_BAND_24G_MSK) {
2701 if (priv->assoc_capability & WLAN_CAPABILITY_SHORT_SLOT_TIME)
2702 priv->staging_rxon.flags |= RXON_FLG_SHORT_SLOT_MSK;
2703 else
2704 priv->staging_rxon.flags &= ~RXON_FLG_SHORT_SLOT_MSK;
2705
2706 if (priv->iw_mode == IEEE80211_IF_TYPE_IBSS)
2707 priv->staging_rxon.flags &= ~RXON_FLG_SHORT_SLOT_MSK;
2708
2709 }
2710
2711 iwl4965_commit_rxon(priv);
2712
2713 switch (priv->iw_mode) {
2714 case IEEE80211_IF_TYPE_STA:
2715 iwl4965_rate_scale_init(priv->hw, IWL_AP_ID);
2716 break;
2717
2718 case IEEE80211_IF_TYPE_IBSS:
2719
2720 /* assume default assoc id */
2721 priv->assoc_id = 1;
2722
2723 iwl_rxon_add_station(priv, priv->bssid, 0);
2724 iwl4965_rate_scale_init(priv->hw, IWL_STA_ID);
2725 iwl4965_send_beacon_cmd(priv);
2726
2727 break;
2728
2729 default:
2730 IWL_ERROR("%s Should not be called in %d mode\n",
2731 __FUNCTION__, priv->iw_mode);
2732 break;
2733 }
2734
2735 iwl4965_sequence_reset(priv);
2736
2737 /* Enable Rx differential gain and sensitivity calibrations */
2738 iwl_chain_noise_reset(priv);
2739 priv->start_calib = 1;
2740
2741 if (priv->iw_mode == IEEE80211_IF_TYPE_IBSS)
2742 priv->assoc_station_added = 1;
2743
2744 iwl4965_activate_qos(priv, 0);
2745
2746 iwl_power_update_mode(priv, 0);
2747 /* we have just associated, don't start scan too early */
2748 priv->next_scan_jiffies = jiffies + IWL_DELAY_NEXT_SCAN;
2749 }
2750
2751
2752 static void iwl4965_bg_post_associate(struct work_struct *data)
2753 {
2754 struct iwl_priv *priv = container_of(data, struct iwl_priv,
2755 post_associate.work);
2756
2757 mutex_lock(&priv->mutex);
2758 iwl4965_post_associate(priv);
2759 mutex_unlock(&priv->mutex);
2760
2761 }
2762
2763 static int iwl4965_mac_config(struct ieee80211_hw *hw, struct ieee80211_conf *conf);
2764
2765 static void iwl_bg_scan_completed(struct work_struct *work)
2766 {
2767 struct iwl_priv *priv =
2768 container_of(work, struct iwl_priv, scan_completed);
2769
2770 IWL_DEBUG_SCAN("SCAN complete scan\n");
2771
2772 if (test_bit(STATUS_EXIT_PENDING, &priv->status))
2773 return;
2774
2775 if (test_bit(STATUS_CONF_PENDING, &priv->status))
2776 iwl4965_mac_config(priv->hw, ieee80211_get_hw_conf(priv->hw));
2777
2778 ieee80211_scan_completed(priv->hw);
2779
2780 /* Since setting the TXPOWER may have been deferred while
2781 * performing the scan, fire one off */
2782 mutex_lock(&priv->mutex);
2783 iwl_set_tx_power(priv, priv->tx_power_user_lmt, true);
2784 mutex_unlock(&priv->mutex);
2785 }
2786
2787 /*****************************************************************************
2788 *
2789 * mac80211 entry point functions
2790 *
2791 *****************************************************************************/
2792
2793 #define UCODE_READY_TIMEOUT (2 * HZ)
2794
2795 static int iwl4965_mac_start(struct ieee80211_hw *hw)
2796 {
2797 struct iwl_priv *priv = hw->priv;
2798 int ret;
2799
2800 IWL_DEBUG_MAC80211("enter\n");
2801
2802 if (pci_enable_device(priv->pci_dev)) {
2803 IWL_ERROR("Fail to pci_enable_device\n");
2804 return -ENODEV;
2805 }
2806 pci_restore_state(priv->pci_dev);
2807 pci_enable_msi(priv->pci_dev);
2808
2809 ret = request_irq(priv->pci_dev->irq, iwl4965_isr, IRQF_SHARED,
2810 DRV_NAME, priv);
2811 if (ret) {
2812 IWL_ERROR("Error allocating IRQ %d\n", priv->pci_dev->irq);
2813 goto out_disable_msi;
2814 }
2815
2816 /* we should be verifying the device is ready to be opened */
2817 mutex_lock(&priv->mutex);
2818
2819 memset(&priv->staging_rxon, 0, sizeof(struct iwl_rxon_cmd));
2820 /* fetch ucode file from disk, alloc and copy to bus-master buffers ...
2821 * ucode filename and max sizes are card-specific. */
2822
2823 if (!priv->ucode_code.len) {
2824 ret = iwl4965_read_ucode(priv);
2825 if (ret) {
2826 IWL_ERROR("Could not read microcode: %d\n", ret);
2827 mutex_unlock(&priv->mutex);
2828 goto out_release_irq;
2829 }
2830 }
2831
2832 ret = __iwl4965_up(priv);
2833
2834 mutex_unlock(&priv->mutex);
2835
2836 if (ret)
2837 goto out_release_irq;
2838
2839 IWL_DEBUG_INFO("Start UP work done.\n");
2840
2841 if (test_bit(STATUS_IN_SUSPEND, &priv->status))
2842 return 0;
2843
2844 /* Wait for START_ALIVE from Run Time ucode. Otherwise callbacks from
2845 * mac80211 will not be run successfully. */
2846 if (priv->ucode_type == UCODE_RT) {
2847 ret = wait_event_interruptible_timeout(priv->wait_command_queue,
2848 test_bit(STATUS_READY, &priv->status),
2849 UCODE_READY_TIMEOUT);
2850 if (!ret) {
2851 if (!test_bit(STATUS_READY, &priv->status)) {
2852 IWL_ERROR("START_ALIVE timeout after %dms.\n",
2853 jiffies_to_msecs(UCODE_READY_TIMEOUT));
2854 ret = -ETIMEDOUT;
2855 goto out_release_irq;
2856 }
2857 }
2858
2859 priv->is_open = 1;
2860 }
2861 IWL_DEBUG_MAC80211("leave\n");
2862 return 0;
2863
2864 out_release_irq:
2865 free_irq(priv->pci_dev->irq, priv);
2866 out_disable_msi:
2867 pci_disable_msi(priv->pci_dev);
2868 pci_disable_device(priv->pci_dev);
2869 priv->is_open = 0;
2870 IWL_DEBUG_MAC80211("leave - failed\n");
2871 return ret;
2872 }
2873
2874 static void iwl4965_mac_stop(struct ieee80211_hw *hw)
2875 {
2876 struct iwl_priv *priv = hw->priv;
2877
2878 IWL_DEBUG_MAC80211("enter\n");
2879
2880 if (!priv->is_open) {
2881 IWL_DEBUG_MAC80211("leave - skip\n");
2882 return;
2883 }
2884
2885 priv->is_open = 0;
2886
2887 if (iwl_is_ready_rf(priv)) {
2888 /* stop mac, cancel any scan request and clear
2889 * RXON_FILTER_ASSOC_MSK BIT
2890 */
2891 mutex_lock(&priv->mutex);
2892 iwl_scan_cancel_timeout(priv, 100);
2893 cancel_delayed_work(&priv->post_associate);
2894 mutex_unlock(&priv->mutex);
2895 }
2896
2897 iwl4965_down(priv);
2898
2899 flush_workqueue(priv->workqueue);
2900 free_irq(priv->pci_dev->irq, priv);
2901 pci_disable_msi(priv->pci_dev);
2902 pci_save_state(priv->pci_dev);
2903 pci_disable_device(priv->pci_dev);
2904
2905 IWL_DEBUG_MAC80211("leave\n");
2906 }
2907
2908 static int iwl4965_mac_tx(struct ieee80211_hw *hw, struct sk_buff *skb)
2909 {
2910 struct iwl_priv *priv = hw->priv;
2911
2912 IWL_DEBUG_MAC80211("enter\n");
2913
2914 if (priv->iw_mode == IEEE80211_IF_TYPE_MNTR) {
2915 IWL_DEBUG_MAC80211("leave - monitor\n");
2916 return -1;
2917 }
2918
2919 IWL_DEBUG_TX("dev->xmit(%d bytes) at rate 0x%02x\n", skb->len,
2920 ieee80211_get_tx_rate(hw, IEEE80211_SKB_CB(skb))->bitrate);
2921
2922 if (iwl_tx_skb(priv, skb))
2923 dev_kfree_skb_any(skb);
2924
2925 IWL_DEBUG_MAC80211("leave\n");
2926 return 0;
2927 }
2928
2929 static int iwl4965_mac_add_interface(struct ieee80211_hw *hw,
2930 struct ieee80211_if_init_conf *conf)
2931 {
2932 struct iwl_priv *priv = hw->priv;
2933 unsigned long flags;
2934 DECLARE_MAC_BUF(mac);
2935
2936 IWL_DEBUG_MAC80211("enter: type %d\n", conf->type);
2937
2938 if (priv->vif) {
2939 IWL_DEBUG_MAC80211("leave - vif != NULL\n");
2940 return -EOPNOTSUPP;
2941 }
2942
2943 spin_lock_irqsave(&priv->lock, flags);
2944 priv->vif = conf->vif;
2945
2946 spin_unlock_irqrestore(&priv->lock, flags);
2947
2948 mutex_lock(&priv->mutex);
2949
2950 if (conf->mac_addr) {
2951 IWL_DEBUG_MAC80211("Set %s\n", print_mac(mac, conf->mac_addr));
2952 memcpy(priv->mac_addr, conf->mac_addr, ETH_ALEN);
2953 }
2954
2955 if (iwl4965_set_mode(priv, conf->type) == -EAGAIN)
2956 /* we are not ready, will run again when ready */
2957 set_bit(STATUS_MODE_PENDING, &priv->status);
2958
2959 mutex_unlock(&priv->mutex);
2960
2961 IWL_DEBUG_MAC80211("leave\n");
2962 return 0;
2963 }
2964
2965 /**
2966 * iwl4965_mac_config - mac80211 config callback
2967 *
2968 * We ignore conf->flags & IEEE80211_CONF_SHORT_SLOT_TIME since it seems to
2969 * be set inappropriately and the driver currently sets the hardware up to
2970 * use it whenever needed.
2971 */
2972 static int iwl4965_mac_config(struct ieee80211_hw *hw, struct ieee80211_conf *conf)
2973 {
2974 struct iwl_priv *priv = hw->priv;
2975 const struct iwl_channel_info *ch_info;
2976 unsigned long flags;
2977 int ret = 0;
2978 u16 channel;
2979
2980 mutex_lock(&priv->mutex);
2981 IWL_DEBUG_MAC80211("enter to channel %d\n", conf->channel->hw_value);
2982
2983 priv->add_radiotap = !!(conf->flags & IEEE80211_CONF_RADIOTAP);
2984
2985
2986 if (priv->cfg->ops->lib->radio_kill_sw &&
2987 priv->cfg->ops->lib->radio_kill_sw(priv, !conf->radio_enabled)) {
2988 IWL_DEBUG_MAC80211("leave - RF-KILL - waiting for uCode\n");
2989 mutex_unlock(&priv->mutex);
2990 }
2991
2992 if (!iwl_is_ready(priv)) {
2993 IWL_DEBUG_MAC80211("leave - not ready\n");
2994 ret = -EIO;
2995 goto out;
2996 }
2997
2998 if (unlikely(!priv->cfg->mod_params->disable_hw_scan &&
2999 test_bit(STATUS_SCANNING, &priv->status))) {
3000 IWL_DEBUG_MAC80211("leave - scanning\n");
3001 set_bit(STATUS_CONF_PENDING, &priv->status);
3002 mutex_unlock(&priv->mutex);
3003 return 0;
3004 }
3005
3006 channel = ieee80211_frequency_to_channel(conf->channel->center_freq);
3007 ch_info = iwl_get_channel_info(priv, conf->channel->band, channel);
3008 if (!is_channel_valid(ch_info)) {
3009 IWL_DEBUG_MAC80211("leave - invalid channel\n");
3010 ret = -EINVAL;
3011 goto out;
3012 }
3013
3014 if (priv->iw_mode == IEEE80211_IF_TYPE_IBSS &&
3015 !is_channel_ibss(ch_info)) {
3016 IWL_ERROR("channel %d in band %d not IBSS channel\n",
3017 conf->channel->hw_value, conf->channel->band);
3018 ret = -EINVAL;
3019 goto out;
3020 }
3021
3022 spin_lock_irqsave(&priv->lock, flags);
3023
3024 /* if we are switching from ht to 2.4 clear flags
3025 * from any ht related info since 2.4 does not
3026 * support ht */
3027 if ((le16_to_cpu(priv->staging_rxon.channel) != channel)
3028 #ifdef IEEE80211_CONF_CHANNEL_SWITCH
3029 && !(conf->flags & IEEE80211_CONF_CHANNEL_SWITCH)
3030 #endif
3031 )
3032 priv->staging_rxon.flags = 0;
3033
3034 iwl_set_rxon_channel(priv, conf->channel->band, channel);
3035
3036 iwl_set_flags_for_band(priv, conf->channel->band);
3037
3038 /* The list of supported rates and rate mask can be different
3039 * for each band; since the band may have changed, reset
3040 * the rate mask to what mac80211 lists */
3041 iwl4965_set_rate(priv);
3042
3043 spin_unlock_irqrestore(&priv->lock, flags);
3044
3045 #ifdef IEEE80211_CONF_CHANNEL_SWITCH
3046 if (conf->flags & IEEE80211_CONF_CHANNEL_SWITCH) {
3047 iwl4965_hw_channel_switch(priv, conf->channel);
3048 goto out;
3049 }
3050 #endif
3051
3052 if (!conf->radio_enabled) {
3053 IWL_DEBUG_MAC80211("leave - radio disabled\n");
3054 goto out;
3055 }
3056
3057 if (iwl_is_rfkill(priv)) {
3058 IWL_DEBUG_MAC80211("leave - RF kill\n");
3059 ret = -EIO;
3060 goto out;
3061 }
3062
3063 IWL_DEBUG_MAC80211("TX Power old=%d new=%d\n",
3064 priv->tx_power_user_lmt, conf->power_level);
3065
3066 iwl_set_tx_power(priv, conf->power_level, false);
3067
3068 iwl4965_set_rate(priv);
3069
3070 if (memcmp(&priv->active_rxon,
3071 &priv->staging_rxon, sizeof(priv->staging_rxon)))
3072 iwl4965_commit_rxon(priv);
3073 else
3074 IWL_DEBUG_INFO("No re-sending same RXON configuration.\n");
3075
3076 IWL_DEBUG_MAC80211("leave\n");
3077
3078 out:
3079 clear_bit(STATUS_CONF_PENDING, &priv->status);
3080 mutex_unlock(&priv->mutex);
3081 return ret;
3082 }
3083
3084 static void iwl4965_config_ap(struct iwl_priv *priv)
3085 {
3086 int ret = 0;
3087
3088 if (test_bit(STATUS_EXIT_PENDING, &priv->status))
3089 return;
3090
3091 /* The following should be done only at AP bring up */
3092 if ((priv->active_rxon.filter_flags & RXON_FILTER_ASSOC_MSK) == 0) {
3093
3094 /* RXON - unassoc (to set timing command) */
3095 priv->staging_rxon.filter_flags &= ~RXON_FILTER_ASSOC_MSK;
3096 iwl4965_commit_rxon(priv);
3097
3098 /* RXON Timing */
3099 memset(&priv->rxon_timing, 0, sizeof(struct iwl4965_rxon_time_cmd));
3100 iwl4965_setup_rxon_timing(priv);
3101 ret = iwl_send_cmd_pdu(priv, REPLY_RXON_TIMING,
3102 sizeof(priv->rxon_timing), &priv->rxon_timing);
3103 if (ret)
3104 IWL_WARNING("REPLY_RXON_TIMING failed - "
3105 "Attempting to continue.\n");
3106
3107 iwl_set_rxon_chain(priv);
3108
3109 /* FIXME: what should be the assoc_id for AP? */
3110 priv->staging_rxon.assoc_id = cpu_to_le16(priv->assoc_id);
3111 if (priv->assoc_capability & WLAN_CAPABILITY_SHORT_PREAMBLE)
3112 priv->staging_rxon.flags |=
3113 RXON_FLG_SHORT_PREAMBLE_MSK;
3114 else
3115 priv->staging_rxon.flags &=
3116 ~RXON_FLG_SHORT_PREAMBLE_MSK;
3117
3118 if (priv->staging_rxon.flags & RXON_FLG_BAND_24G_MSK) {
3119 if (priv->assoc_capability &
3120 WLAN_CAPABILITY_SHORT_SLOT_TIME)
3121 priv->staging_rxon.flags |=
3122 RXON_FLG_SHORT_SLOT_MSK;
3123 else
3124 priv->staging_rxon.flags &=
3125 ~RXON_FLG_SHORT_SLOT_MSK;
3126
3127 if (priv->iw_mode == IEEE80211_IF_TYPE_IBSS)
3128 priv->staging_rxon.flags &=
3129 ~RXON_FLG_SHORT_SLOT_MSK;
3130 }
3131 /* restore RXON assoc */
3132 priv->staging_rxon.filter_flags |= RXON_FILTER_ASSOC_MSK;
3133 iwl4965_commit_rxon(priv);
3134 iwl4965_activate_qos(priv, 1);
3135 iwl_rxon_add_station(priv, iwl_bcast_addr, 0);
3136 }
3137 iwl4965_send_beacon_cmd(priv);
3138
3139 /* FIXME - we need to add code here to detect a totally new
3140 * configuration, reset the AP, unassoc, rxon timing, assoc,
3141 * clear sta table, add BCAST sta... */
3142 }
3143
3144 static int iwl4965_mac_config_interface(struct ieee80211_hw *hw,
3145 struct ieee80211_vif *vif,
3146 struct ieee80211_if_conf *conf)
3147 {
3148 struct iwl_priv *priv = hw->priv;
3149 DECLARE_MAC_BUF(mac);
3150 unsigned long flags;
3151 int rc;
3152
3153 if (conf == NULL)
3154 return -EIO;
3155
3156 if (priv->vif != vif) {
3157 IWL_DEBUG_MAC80211("leave - priv->vif != vif\n");
3158 return 0;
3159 }
3160
3161 if ((priv->iw_mode == IEEE80211_IF_TYPE_AP) &&
3162 (!conf->beacon || !conf->ssid_len)) {
3163 IWL_DEBUG_MAC80211
3164 ("Leaving in AP mode because HostAPD is not ready.\n");
3165 return 0;
3166 }
3167
3168 if (!iwl_is_alive(priv))
3169 return -EAGAIN;
3170
3171 mutex_lock(&priv->mutex);
3172
3173 if (conf->bssid)
3174 IWL_DEBUG_MAC80211("bssid: %s\n",
3175 print_mac(mac, conf->bssid));
3176
3177 /*
3178 * very dubious code was here; the probe filtering flag is never set:
3179 *
3180 if (unlikely(test_bit(STATUS_SCANNING, &priv->status)) &&
3181 !(priv->hw->flags & IEEE80211_HW_NO_PROBE_FILTERING)) {
3182 */
3183
3184 if (priv->iw_mode == IEEE80211_IF_TYPE_AP) {
3185 if (!conf->bssid) {
3186 conf->bssid = priv->mac_addr;
3187 memcpy(priv->bssid, priv->mac_addr, ETH_ALEN);
3188 IWL_DEBUG_MAC80211("bssid was set to: %s\n",
3189 print_mac(mac, conf->bssid));
3190 }
3191 if (priv->ibss_beacon)
3192 dev_kfree_skb(priv->ibss_beacon);
3193
3194 priv->ibss_beacon = conf->beacon;
3195 }
3196
3197 if (iwl_is_rfkill(priv))
3198 goto done;
3199
3200 if (conf->bssid && !is_zero_ether_addr(conf->bssid) &&
3201 !is_multicast_ether_addr(conf->bssid)) {
3202 /* If there is currently a HW scan going on in the background
3203 * then we need to cancel it else the RXON below will fail. */
3204 if (iwl_scan_cancel_timeout(priv, 100)) {
3205 IWL_WARNING("Aborted scan still in progress "
3206 "after 100ms\n");
3207 IWL_DEBUG_MAC80211("leaving - scan abort failed.\n");
3208 mutex_unlock(&priv->mutex);
3209 return -EAGAIN;
3210 }
3211 memcpy(priv->staging_rxon.bssid_addr, conf->bssid, ETH_ALEN);
3212
3213 /* TODO: Audit driver for usage of these members and see
3214 * if mac80211 deprecates them (priv->bssid looks like it
3215 * shouldn't be there, but I haven't scanned the IBSS code
3216 * to verify) - jpk */
3217 memcpy(priv->bssid, conf->bssid, ETH_ALEN);
3218
3219 if (priv->iw_mode == IEEE80211_IF_TYPE_AP)
3220 iwl4965_config_ap(priv);
3221 else {
3222 rc = iwl4965_commit_rxon(priv);
3223 if ((priv->iw_mode == IEEE80211_IF_TYPE_STA) && rc)
3224 iwl_rxon_add_station(
3225 priv, priv->active_rxon.bssid_addr, 1);
3226 }
3227
3228 } else {
3229 iwl_scan_cancel_timeout(priv, 100);
3230 priv->staging_rxon.filter_flags &= ~RXON_FILTER_ASSOC_MSK;
3231 iwl4965_commit_rxon(priv);
3232 }
3233
3234 done:
3235 spin_lock_irqsave(&priv->lock, flags);
3236 if (!conf->ssid_len)
3237 memset(priv->essid, 0, IW_ESSID_MAX_SIZE);
3238 else
3239 memcpy(priv->essid, conf->ssid, conf->ssid_len);
3240
3241 priv->essid_len = conf->ssid_len;
3242 spin_unlock_irqrestore(&priv->lock, flags);
3243
3244 IWL_DEBUG_MAC80211("leave\n");
3245 mutex_unlock(&priv->mutex);
3246
3247 return 0;
3248 }
3249
3250 static void iwl4965_configure_filter(struct ieee80211_hw *hw,
3251 unsigned int changed_flags,
3252 unsigned int *total_flags,
3253 int mc_count, struct dev_addr_list *mc_list)
3254 {
3255 /*
3256 * XXX: dummy
3257 * see also iwl4965_connection_init_rx_config
3258 */
3259 struct iwl_priv *priv = hw->priv;
3260 int new_flags = 0;
3261 if (changed_flags & (FIF_PROMISC_IN_BSS | FIF_OTHER_BSS)) {
3262 if (*total_flags & (FIF_PROMISC_IN_BSS | FIF_OTHER_BSS)) {
3263 IWL_DEBUG_MAC80211("Enter: type %d (0x%x, 0x%x)\n",
3264 IEEE80211_IF_TYPE_MNTR,
3265 changed_flags, *total_flags);
3266 /* queue work 'cuz mac80211 is holding a lock which
3267 * prevents us from issuing (synchronous) f/w cmds */
3268 queue_work(priv->workqueue, &priv->set_monitor);
3269 new_flags &= FIF_PROMISC_IN_BSS |
3270 FIF_OTHER_BSS |
3271 FIF_ALLMULTI;
3272 }
3273 }
3274 *total_flags = new_flags;
3275 }
3276
3277 static void iwl4965_mac_remove_interface(struct ieee80211_hw *hw,
3278 struct ieee80211_if_init_conf *conf)
3279 {
3280 struct iwl_priv *priv = hw->priv;
3281
3282 IWL_DEBUG_MAC80211("enter\n");
3283
3284 mutex_lock(&priv->mutex);
3285
3286 if (iwl_is_ready_rf(priv)) {
3287 iwl_scan_cancel_timeout(priv, 100);
3288 cancel_delayed_work(&priv->post_associate);
3289 priv->staging_rxon.filter_flags &= ~RXON_FILTER_ASSOC_MSK;
3290 iwl4965_commit_rxon(priv);
3291 }
3292 if (priv->vif == conf->vif) {
3293 priv->vif = NULL;
3294 memset(priv->bssid, 0, ETH_ALEN);
3295 memset(priv->essid, 0, IW_ESSID_MAX_SIZE);
3296 priv->essid_len = 0;
3297 }
3298 mutex_unlock(&priv->mutex);
3299
3300 IWL_DEBUG_MAC80211("leave\n");
3301
3302 }
3303
3304 #define IWL_DELAY_NEXT_SCAN_AFTER_ASSOC (HZ*6)
3305 static void iwl4965_bss_info_changed(struct ieee80211_hw *hw,
3306 struct ieee80211_vif *vif,
3307 struct ieee80211_bss_conf *bss_conf,
3308 u32 changes)
3309 {
3310 struct iwl_priv *priv = hw->priv;
3311
3312 IWL_DEBUG_MAC80211("changes = 0x%X\n", changes);
3313
3314 if (changes & BSS_CHANGED_ERP_PREAMBLE) {
3315 IWL_DEBUG_MAC80211("ERP_PREAMBLE %d\n",
3316 bss_conf->use_short_preamble);
3317 if (bss_conf->use_short_preamble)
3318 priv->staging_rxon.flags |= RXON_FLG_SHORT_PREAMBLE_MSK;
3319 else
3320 priv->staging_rxon.flags &= ~RXON_FLG_SHORT_PREAMBLE_MSK;
3321 }
3322
3323 if (changes & BSS_CHANGED_ERP_CTS_PROT) {
3324 IWL_DEBUG_MAC80211("ERP_CTS %d\n", bss_conf->use_cts_prot);
3325 if (bss_conf->use_cts_prot && (priv->band != IEEE80211_BAND_5GHZ))
3326 priv->staging_rxon.flags |= RXON_FLG_TGG_PROTECT_MSK;
3327 else
3328 priv->staging_rxon.flags &= ~RXON_FLG_TGG_PROTECT_MSK;
3329 }
3330
3331 if (changes & BSS_CHANGED_HT) {
3332 IWL_DEBUG_MAC80211("HT %d\n", bss_conf->assoc_ht);
3333 iwl4965_ht_conf(priv, bss_conf);
3334 iwl_set_rxon_chain(priv);
3335 }
3336
3337 if (changes & BSS_CHANGED_ASSOC) {
3338 IWL_DEBUG_MAC80211("ASSOC %d\n", bss_conf->assoc);
3339 /* This should never happen as this function should
3340 * never be called from interrupt context. */
3341 if (WARN_ON_ONCE(in_interrupt()))
3342 return;
3343 if (bss_conf->assoc) {
3344 priv->assoc_id = bss_conf->aid;
3345 priv->beacon_int = bss_conf->beacon_int;
3346 priv->timestamp = bss_conf->timestamp;
3347 priv->assoc_capability = bss_conf->assoc_capability;
3348 priv->next_scan_jiffies = jiffies +
3349 IWL_DELAY_NEXT_SCAN_AFTER_ASSOC;
3350 mutex_lock(&priv->mutex);
3351 iwl4965_post_associate(priv);
3352 mutex_unlock(&priv->mutex);
3353 } else {
3354 priv->assoc_id = 0;
3355 IWL_DEBUG_MAC80211("DISASSOC %d\n", bss_conf->assoc);
3356 }
3357 } else if (changes && iwl_is_associated(priv) && priv->assoc_id) {
3358 IWL_DEBUG_MAC80211("Associated Changes %d\n", changes);
3359 iwl_send_rxon_assoc(priv);
3360 }
3361
3362 }
3363
3364 static int iwl4965_mac_hw_scan(struct ieee80211_hw *hw, u8 *ssid, size_t len)
3365 {
3366 int rc = 0;
3367 unsigned long flags;
3368 struct iwl_priv *priv = hw->priv;
3369
3370 IWL_DEBUG_MAC80211("enter\n");
3371
3372 mutex_lock(&priv->mutex);
3373 spin_lock_irqsave(&priv->lock, flags);
3374
3375 if (!iwl_is_ready_rf(priv)) {
3376 rc = -EIO;
3377 IWL_DEBUG_MAC80211("leave - not ready or exit pending\n");
3378 goto out_unlock;
3379 }
3380
3381 if (priv->iw_mode == IEEE80211_IF_TYPE_AP) { /* APs don't scan */
3382 rc = -EIO;
3383 IWL_ERROR("ERROR: APs don't scan\n");
3384 goto out_unlock;
3385 }
3386
3387 /* we don't schedule scan within next_scan_jiffies period */
3388 if (priv->next_scan_jiffies &&
3389 time_after(priv->next_scan_jiffies, jiffies)) {
3390 rc = -EAGAIN;
3391 goto out_unlock;
3392 }
3393 /* if we just finished scan ask for delay */
3394 if (priv->last_scan_jiffies && time_after(priv->last_scan_jiffies +
3395 IWL_DELAY_NEXT_SCAN, jiffies)) {
3396 rc = -EAGAIN;
3397 goto out_unlock;
3398 }
3399 if (len) {
3400 IWL_DEBUG_SCAN("direct scan for %s [%d]\n ",
3401 iwl_escape_essid(ssid, len), (int)len);
3402
3403 priv->one_direct_scan = 1;
3404 priv->direct_ssid_len = (u8)
3405 min((u8) len, (u8) IW_ESSID_MAX_SIZE);
3406 memcpy(priv->direct_ssid, ssid, priv->direct_ssid_len);
3407 } else
3408 priv->one_direct_scan = 0;
3409
3410 rc = iwl_scan_initiate(priv);
3411
3412 IWL_DEBUG_MAC80211("leave\n");
3413
3414 out_unlock:
3415 spin_unlock_irqrestore(&priv->lock, flags);
3416 mutex_unlock(&priv->mutex);
3417
3418 return rc;
3419 }
3420
3421 static void iwl4965_mac_update_tkip_key(struct ieee80211_hw *hw,
3422 struct ieee80211_key_conf *keyconf, const u8 *addr,
3423 u32 iv32, u16 *phase1key)
3424 {
3425 struct iwl_priv *priv = hw->priv;
3426 u8 sta_id = IWL_INVALID_STATION;
3427 unsigned long flags;
3428 __le16 key_flags = 0;
3429 int i;
3430 DECLARE_MAC_BUF(mac);
3431
3432 IWL_DEBUG_MAC80211("enter\n");
3433
3434 sta_id = iwl_find_station(priv, addr);
3435 if (sta_id == IWL_INVALID_STATION) {
3436 IWL_DEBUG_MAC80211("leave - %s not in station map.\n",
3437 print_mac(mac, addr));
3438 return;
3439 }
3440
3441 iwl_scan_cancel_timeout(priv, 100);
3442
3443 key_flags |= (STA_KEY_FLG_TKIP | STA_KEY_FLG_MAP_KEY_MSK);
3444 key_flags |= cpu_to_le16(keyconf->keyidx << STA_KEY_FLG_KEYID_POS);
3445 key_flags &= ~STA_KEY_FLG_INVALID;
3446
3447 if (sta_id == priv->hw_params.bcast_sta_id)
3448 key_flags |= STA_KEY_MULTICAST_MSK;
3449
3450 spin_lock_irqsave(&priv->sta_lock, flags);
3451
3452 priv->stations[sta_id].sta.key.key_flags = key_flags;
3453 priv->stations[sta_id].sta.key.tkip_rx_tsc_byte2 = (u8) iv32;
3454
3455 for (i = 0; i < 5; i++)
3456 priv->stations[sta_id].sta.key.tkip_rx_ttak[i] =
3457 cpu_to_le16(phase1key[i]);
3458
3459 priv->stations[sta_id].sta.sta.modify_mask = STA_MODIFY_KEY_MASK;
3460 priv->stations[sta_id].sta.mode = STA_CONTROL_MODIFY_MSK;
3461
3462 iwl_send_add_sta(priv, &priv->stations[sta_id].sta, CMD_ASYNC);
3463
3464 spin_unlock_irqrestore(&priv->sta_lock, flags);
3465
3466 IWL_DEBUG_MAC80211("leave\n");
3467 }
3468
3469 static int iwl4965_mac_set_key(struct ieee80211_hw *hw, enum set_key_cmd cmd,
3470 const u8 *local_addr, const u8 *addr,
3471 struct ieee80211_key_conf *key)
3472 {
3473 struct iwl_priv *priv = hw->priv;
3474 DECLARE_MAC_BUF(mac);
3475 int ret = 0;
3476 u8 sta_id = IWL_INVALID_STATION;
3477 u8 is_default_wep_key = 0;
3478
3479 IWL_DEBUG_MAC80211("enter\n");
3480
3481 if (priv->hw_params.sw_crypto) {
3482 IWL_DEBUG_MAC80211("leave - hwcrypto disabled\n");
3483 return -EOPNOTSUPP;
3484 }
3485
3486 if (is_zero_ether_addr(addr))
3487 /* only support pairwise keys */
3488 return -EOPNOTSUPP;
3489
3490 sta_id = iwl_find_station(priv, addr);
3491 if (sta_id == IWL_INVALID_STATION) {
3492 IWL_DEBUG_MAC80211("leave - %s not in station map.\n",
3493 print_mac(mac, addr));
3494 return -EINVAL;
3495
3496 }
3497
3498 mutex_lock(&priv->mutex);
3499 iwl_scan_cancel_timeout(priv, 100);
3500 mutex_unlock(&priv->mutex);
3501
3502 /* If we are getting WEP group key and we didn't receive any key mapping
3503 * so far, we are in legacy wep mode (group key only), otherwise we are
3504 * in 1X mode.
3505 * In legacy wep mode, we use another host command to the uCode */
3506 if (key->alg == ALG_WEP && sta_id == priv->hw_params.bcast_sta_id &&
3507 priv->iw_mode != IEEE80211_IF_TYPE_AP) {
3508 if (cmd == SET_KEY)
3509 is_default_wep_key = !priv->key_mapping_key;
3510 else
3511 is_default_wep_key =
3512 (key->hw_key_idx == HW_KEY_DEFAULT);
3513 }
3514
3515 switch (cmd) {
3516 case SET_KEY:
3517 if (is_default_wep_key)
3518 ret = iwl_set_default_wep_key(priv, key);
3519 else
3520 ret = iwl_set_dynamic_key(priv, key, sta_id);
3521
3522 IWL_DEBUG_MAC80211("enable hwcrypto key\n");
3523 break;
3524 case DISABLE_KEY:
3525 if (is_default_wep_key)
3526 ret = iwl_remove_default_wep_key(priv, key);
3527 else
3528 ret = iwl_remove_dynamic_key(priv, key, sta_id);
3529
3530 IWL_DEBUG_MAC80211("disable hwcrypto key\n");
3531 break;
3532 default:
3533 ret = -EINVAL;
3534 }
3535
3536 IWL_DEBUG_MAC80211("leave\n");
3537
3538 return ret;
3539 }
3540
3541 static int iwl4965_mac_conf_tx(struct ieee80211_hw *hw, u16 queue,
3542 const struct ieee80211_tx_queue_params *params)
3543 {
3544 struct iwl_priv *priv = hw->priv;
3545 unsigned long flags;
3546 int q;
3547
3548 IWL_DEBUG_MAC80211("enter\n");
3549
3550 if (!iwl_is_ready_rf(priv)) {
3551 IWL_DEBUG_MAC80211("leave - RF not ready\n");
3552 return -EIO;
3553 }
3554
3555 if (queue >= AC_NUM) {
3556 IWL_DEBUG_MAC80211("leave - queue >= AC_NUM %d\n", queue);
3557 return 0;
3558 }
3559
3560 if (!priv->qos_data.qos_enable) {
3561 priv->qos_data.qos_active = 0;
3562 IWL_DEBUG_MAC80211("leave - qos not enabled\n");
3563 return 0;
3564 }
3565 q = AC_NUM - 1 - queue;
3566
3567 spin_lock_irqsave(&priv->lock, flags);
3568
3569 priv->qos_data.def_qos_parm.ac[q].cw_min = cpu_to_le16(params->cw_min);
3570 priv->qos_data.def_qos_parm.ac[q].cw_max = cpu_to_le16(params->cw_max);
3571 priv->qos_data.def_qos_parm.ac[q].aifsn = params->aifs;
3572 priv->qos_data.def_qos_parm.ac[q].edca_txop =
3573 cpu_to_le16((params->txop * 32));
3574
3575 priv->qos_data.def_qos_parm.ac[q].reserved1 = 0;
3576 priv->qos_data.qos_active = 1;
3577
3578 spin_unlock_irqrestore(&priv->lock, flags);
3579
3580 mutex_lock(&priv->mutex);
3581 if (priv->iw_mode == IEEE80211_IF_TYPE_AP)
3582 iwl4965_activate_qos(priv, 1);
3583 else if (priv->assoc_id && iwl_is_associated(priv))
3584 iwl4965_activate_qos(priv, 0);
3585
3586 mutex_unlock(&priv->mutex);
3587
3588 IWL_DEBUG_MAC80211("leave\n");
3589 return 0;
3590 }
3591
3592 static int iwl4965_mac_get_tx_stats(struct ieee80211_hw *hw,
3593 struct ieee80211_tx_queue_stats *stats)
3594 {
3595 struct iwl_priv *priv = hw->priv;
3596 int i, avail;
3597 struct iwl_tx_queue *txq;
3598 struct iwl_queue *q;
3599 unsigned long flags;
3600
3601 IWL_DEBUG_MAC80211("enter\n");
3602
3603 if (!iwl_is_ready_rf(priv)) {
3604 IWL_DEBUG_MAC80211("leave - RF not ready\n");
3605 return -EIO;
3606 }
3607
3608 spin_lock_irqsave(&priv->lock, flags);
3609
3610 for (i = 0; i < AC_NUM; i++) {
3611 txq = &priv->txq[i];
3612 q = &txq->q;
3613 avail = iwl_queue_space(q);
3614
3615 stats[i].len = q->n_window - avail;
3616 stats[i].limit = q->n_window - q->high_mark;
3617 stats[i].count = q->n_window;
3618
3619 }
3620 spin_unlock_irqrestore(&priv->lock, flags);
3621
3622 IWL_DEBUG_MAC80211("leave\n");
3623
3624 return 0;
3625 }
3626
3627 static int iwl4965_mac_get_stats(struct ieee80211_hw *hw,
3628 struct ieee80211_low_level_stats *stats)
3629 {
3630 struct iwl_priv *priv = hw->priv;
3631
3632 priv = hw->priv;
3633 IWL_DEBUG_MAC80211("enter\n");
3634 IWL_DEBUG_MAC80211("leave\n");
3635
3636 return 0;
3637 }
3638
3639 static u64 iwl4965_mac_get_tsf(struct ieee80211_hw *hw)
3640 {
3641 struct iwl_priv *priv;
3642
3643 priv = hw->priv;
3644 IWL_DEBUG_MAC80211("enter\n");
3645 IWL_DEBUG_MAC80211("leave\n");
3646
3647 return 0;
3648 }
3649
3650 static void iwl4965_mac_reset_tsf(struct ieee80211_hw *hw)
3651 {
3652 struct iwl_priv *priv = hw->priv;
3653 unsigned long flags;
3654
3655 mutex_lock(&priv->mutex);
3656 IWL_DEBUG_MAC80211("enter\n");
3657
3658 priv->lq_mngr.lq_ready = 0;
3659 spin_lock_irqsave(&priv->lock, flags);
3660 memset(&priv->current_ht_config, 0, sizeof(struct iwl_ht_info));
3661 spin_unlock_irqrestore(&priv->lock, flags);
3662
3663 iwl_reset_qos(priv);
3664
3665 cancel_delayed_work(&priv->post_associate);
3666
3667 spin_lock_irqsave(&priv->lock, flags);
3668 priv->assoc_id = 0;
3669 priv->assoc_capability = 0;
3670 priv->assoc_station_added = 0;
3671
3672 /* new association get rid of ibss beacon skb */
3673 if (priv->ibss_beacon)
3674 dev_kfree_skb(priv->ibss_beacon);
3675
3676 priv->ibss_beacon = NULL;
3677
3678 priv->beacon_int = priv->hw->conf.beacon_int;
3679 priv->timestamp = 0;
3680 if ((priv->iw_mode == IEEE80211_IF_TYPE_STA))
3681 priv->beacon_int = 0;
3682
3683 spin_unlock_irqrestore(&priv->lock, flags);
3684
3685 if (!iwl_is_ready_rf(priv)) {
3686 IWL_DEBUG_MAC80211("leave - not ready\n");
3687 mutex_unlock(&priv->mutex);
3688 return;
3689 }
3690
3691 /* we are restarting association process
3692 * clear RXON_FILTER_ASSOC_MSK bit
3693 */
3694 if (priv->iw_mode != IEEE80211_IF_TYPE_AP) {
3695 iwl_scan_cancel_timeout(priv, 100);
3696 priv->staging_rxon.filter_flags &= ~RXON_FILTER_ASSOC_MSK;
3697 iwl4965_commit_rxon(priv);
3698 }
3699
3700 iwl_power_update_mode(priv, 0);
3701
3702 /* Per mac80211.h: This is only used in IBSS mode... */
3703 if (priv->iw_mode != IEEE80211_IF_TYPE_IBSS) {
3704
3705 IWL_DEBUG_MAC80211("leave - not in IBSS\n");
3706 mutex_unlock(&priv->mutex);
3707 return;
3708 }
3709
3710 iwl4965_set_rate(priv);
3711
3712 mutex_unlock(&priv->mutex);
3713
3714 IWL_DEBUG_MAC80211("leave\n");
3715 }
3716
3717 static int iwl4965_mac_beacon_update(struct ieee80211_hw *hw, struct sk_buff *skb)
3718 {
3719 struct iwl_priv *priv = hw->priv;
3720 unsigned long flags;
3721
3722 mutex_lock(&priv->mutex);
3723 IWL_DEBUG_MAC80211("enter\n");
3724
3725 if (!iwl_is_ready_rf(priv)) {
3726 IWL_DEBUG_MAC80211("leave - RF not ready\n");
3727 mutex_unlock(&priv->mutex);
3728 return -EIO;
3729 }
3730
3731 if (priv->iw_mode != IEEE80211_IF_TYPE_IBSS) {
3732 IWL_DEBUG_MAC80211("leave - not IBSS\n");
3733 mutex_unlock(&priv->mutex);
3734 return -EIO;
3735 }
3736
3737 spin_lock_irqsave(&priv->lock, flags);
3738
3739 if (priv->ibss_beacon)
3740 dev_kfree_skb(priv->ibss_beacon);
3741
3742 priv->ibss_beacon = skb;
3743
3744 priv->assoc_id = 0;
3745
3746 IWL_DEBUG_MAC80211("leave\n");
3747 spin_unlock_irqrestore(&priv->lock, flags);
3748
3749 iwl_reset_qos(priv);
3750
3751 iwl4965_post_associate(priv);
3752
3753 mutex_unlock(&priv->mutex);
3754
3755 return 0;
3756 }
3757
3758 /*****************************************************************************
3759 *
3760 * sysfs attributes
3761 *
3762 *****************************************************************************/
3763
3764 #ifdef CONFIG_IWLWIFI_DEBUG
3765
3766 /*
3767 * The following adds a new attribute to the sysfs representation
3768 * of this device driver (i.e. a new file in /sys/bus/pci/drivers/iwl/)
3769 * used for controlling the debug level.
3770 *
3771 * See the level definitions in iwl for details.
3772 */
3773
3774 static ssize_t show_debug_level(struct device *d,
3775 struct device_attribute *attr, char *buf)
3776 {
3777 struct iwl_priv *priv = d->driver_data;
3778
3779 return sprintf(buf, "0x%08X\n", priv->debug_level);
3780 }
3781 static ssize_t store_debug_level(struct device *d,
3782 struct device_attribute *attr,
3783 const char *buf, size_t count)
3784 {
3785 struct iwl_priv *priv = d->driver_data;
3786 char *p = (char *)buf;
3787 u32 val;
3788
3789 val = simple_strtoul(p, &p, 0);
3790 if (p == buf)
3791 printk(KERN_INFO DRV_NAME
3792 ": %s is not in hex or decimal form.\n", buf);
3793 else
3794 priv->debug_level = val;
3795
3796 return strnlen(buf, count);
3797 }
3798
3799 static DEVICE_ATTR(debug_level, S_IWUSR | S_IRUGO,
3800 show_debug_level, store_debug_level);
3801
3802
3803 #endif /* CONFIG_IWLWIFI_DEBUG */
3804
3805
3806 static ssize_t show_version(struct device *d,
3807 struct device_attribute *attr, char *buf)
3808 {
3809 struct iwl_priv *priv = d->driver_data;
3810 struct iwl_alive_resp *palive = &priv->card_alive;
3811
3812 if (palive->is_valid)
3813 return sprintf(buf, "fw version: 0x%01X.0x%01X.0x%01X.0x%01X\n"
3814 "fw type: 0x%01X 0x%01X\n",
3815 palive->ucode_major, palive->ucode_minor,
3816 palive->sw_rev[0], palive->sw_rev[1],
3817 palive->ver_type, palive->ver_subtype);
3818
3819 else
3820 return sprintf(buf, "fw not loaded\n");
3821 }
3822
3823 static DEVICE_ATTR(version, S_IWUSR | S_IRUGO, show_version, NULL);
3824
3825 static ssize_t show_temperature(struct device *d,
3826 struct device_attribute *attr, char *buf)
3827 {
3828 struct iwl_priv *priv = (struct iwl_priv *)d->driver_data;
3829
3830 if (!iwl_is_alive(priv))
3831 return -EAGAIN;
3832
3833 return sprintf(buf, "%d\n", priv->temperature);
3834 }
3835
3836 static DEVICE_ATTR(temperature, S_IRUGO, show_temperature, NULL);
3837
3838 static ssize_t show_rs_window(struct device *d,
3839 struct device_attribute *attr,
3840 char *buf)
3841 {
3842 struct iwl_priv *priv = d->driver_data;
3843 return iwl4965_fill_rs_info(priv->hw, buf, IWL_AP_ID);
3844 }
3845 static DEVICE_ATTR(rs_window, S_IRUGO, show_rs_window, NULL);
3846
3847 static ssize_t show_tx_power(struct device *d,
3848 struct device_attribute *attr, char *buf)
3849 {
3850 struct iwl_priv *priv = (struct iwl_priv *)d->driver_data;
3851 return sprintf(buf, "%d\n", priv->tx_power_user_lmt);
3852 }
3853
3854 static ssize_t store_tx_power(struct device *d,
3855 struct device_attribute *attr,
3856 const char *buf, size_t count)
3857 {
3858 struct iwl_priv *priv = (struct iwl_priv *)d->driver_data;
3859 char *p = (char *)buf;
3860 u32 val;
3861
3862 val = simple_strtoul(p, &p, 10);
3863 if (p == buf)
3864 printk(KERN_INFO DRV_NAME
3865 ": %s is not in decimal form.\n", buf);
3866 else
3867 iwl_set_tx_power(priv, val, false);
3868
3869 return count;
3870 }
3871
3872 static DEVICE_ATTR(tx_power, S_IWUSR | S_IRUGO, show_tx_power, store_tx_power);
3873
3874 static ssize_t show_flags(struct device *d,
3875 struct device_attribute *attr, char *buf)
3876 {
3877 struct iwl_priv *priv = (struct iwl_priv *)d->driver_data;
3878
3879 return sprintf(buf, "0x%04X\n", priv->active_rxon.flags);
3880 }
3881
3882 static ssize_t store_flags(struct device *d,
3883 struct device_attribute *attr,
3884 const char *buf, size_t count)
3885 {
3886 struct iwl_priv *priv = (struct iwl_priv *)d->driver_data;
3887 u32 flags = simple_strtoul(buf, NULL, 0);
3888
3889 mutex_lock(&priv->mutex);
3890 if (le32_to_cpu(priv->staging_rxon.flags) != flags) {
3891 /* Cancel any currently running scans... */
3892 if (iwl_scan_cancel_timeout(priv, 100))
3893 IWL_WARNING("Could not cancel scan.\n");
3894 else {
3895 IWL_DEBUG_INFO("Committing rxon.flags = 0x%04X\n",
3896 flags);
3897 priv->staging_rxon.flags = cpu_to_le32(flags);
3898 iwl4965_commit_rxon(priv);
3899 }
3900 }
3901 mutex_unlock(&priv->mutex);
3902
3903 return count;
3904 }
3905
3906 static DEVICE_ATTR(flags, S_IWUSR | S_IRUGO, show_flags, store_flags);
3907
3908 static ssize_t show_filter_flags(struct device *d,
3909 struct device_attribute *attr, char *buf)
3910 {
3911 struct iwl_priv *priv = (struct iwl_priv *)d->driver_data;
3912
3913 return sprintf(buf, "0x%04X\n",
3914 le32_to_cpu(priv->active_rxon.filter_flags));
3915 }
3916
3917 static ssize_t store_filter_flags(struct device *d,
3918 struct device_attribute *attr,
3919 const char *buf, size_t count)
3920 {
3921 struct iwl_priv *priv = (struct iwl_priv *)d->driver_data;
3922 u32 filter_flags = simple_strtoul(buf, NULL, 0);
3923
3924 mutex_lock(&priv->mutex);
3925 if (le32_to_cpu(priv->staging_rxon.filter_flags) != filter_flags) {
3926 /* Cancel any currently running scans... */
3927 if (iwl_scan_cancel_timeout(priv, 100))
3928 IWL_WARNING("Could not cancel scan.\n");
3929 else {
3930 IWL_DEBUG_INFO("Committing rxon.filter_flags = "
3931 "0x%04X\n", filter_flags);
3932 priv->staging_rxon.filter_flags =
3933 cpu_to_le32(filter_flags);
3934 iwl4965_commit_rxon(priv);
3935 }
3936 }
3937 mutex_unlock(&priv->mutex);
3938
3939 return count;
3940 }
3941
3942 static DEVICE_ATTR(filter_flags, S_IWUSR | S_IRUGO, show_filter_flags,
3943 store_filter_flags);
3944
3945 #ifdef CONFIG_IWL4965_SPECTRUM_MEASUREMENT
3946
3947 static ssize_t show_measurement(struct device *d,
3948 struct device_attribute *attr, char *buf)
3949 {
3950 struct iwl_priv *priv = dev_get_drvdata(d);
3951 struct iwl4965_spectrum_notification measure_report;
3952 u32 size = sizeof(measure_report), len = 0, ofs = 0;
3953 u8 *data = (u8 *) & measure_report;
3954 unsigned long flags;
3955
3956 spin_lock_irqsave(&priv->lock, flags);
3957 if (!(priv->measurement_status & MEASUREMENT_READY)) {
3958 spin_unlock_irqrestore(&priv->lock, flags);
3959 return 0;
3960 }
3961 memcpy(&measure_report, &priv->measure_report, size);
3962 priv->measurement_status = 0;
3963 spin_unlock_irqrestore(&priv->lock, flags);
3964
3965 while (size && (PAGE_SIZE - len)) {
3966 hex_dump_to_buffer(data + ofs, size, 16, 1, buf + len,
3967 PAGE_SIZE - len, 1);
3968 len = strlen(buf);
3969 if (PAGE_SIZE - len)
3970 buf[len++] = '\n';
3971
3972 ofs += 16;
3973 size -= min(size, 16U);
3974 }
3975
3976 return len;
3977 }
3978
3979 static ssize_t store_measurement(struct device *d,
3980 struct device_attribute *attr,
3981 const char *buf, size_t count)
3982 {
3983 struct iwl_priv *priv = dev_get_drvdata(d);
3984 struct ieee80211_measurement_params params = {
3985 .channel = le16_to_cpu(priv->active_rxon.channel),
3986 .start_time = cpu_to_le64(priv->last_tsf),
3987 .duration = cpu_to_le16(1),
3988 };
3989 u8 type = IWL_MEASURE_BASIC;
3990 u8 buffer[32];
3991 u8 channel;
3992
3993 if (count) {
3994 char *p = buffer;
3995 strncpy(buffer, buf, min(sizeof(buffer), count));
3996 channel = simple_strtoul(p, NULL, 0);
3997 if (channel)
3998 params.channel = channel;
3999
4000 p = buffer;
4001 while (*p && *p != ' ')
4002 p++;
4003 if (*p)
4004 type = simple_strtoul(p + 1, NULL, 0);
4005 }
4006
4007 IWL_DEBUG_INFO("Invoking measurement of type %d on "
4008 "channel %d (for '%s')\n", type, params.channel, buf);
4009 iwl4965_get_measurement(priv, &params, type);
4010
4011 return count;
4012 }
4013
4014 static DEVICE_ATTR(measurement, S_IRUSR | S_IWUSR,
4015 show_measurement, store_measurement);
4016 #endif /* CONFIG_IWL4965_SPECTRUM_MEASUREMENT */
4017
4018 static ssize_t store_retry_rate(struct device *d,
4019 struct device_attribute *attr,
4020 const char *buf, size_t count)
4021 {
4022 struct iwl_priv *priv = dev_get_drvdata(d);
4023
4024 priv->retry_rate = simple_strtoul(buf, NULL, 0);
4025 if (priv->retry_rate <= 0)
4026 priv->retry_rate = 1;
4027
4028 return count;
4029 }
4030
4031 static ssize_t show_retry_rate(struct device *d,
4032 struct device_attribute *attr, char *buf)
4033 {
4034 struct iwl_priv *priv = dev_get_drvdata(d);
4035 return sprintf(buf, "%d", priv->retry_rate);
4036 }
4037
4038 static DEVICE_ATTR(retry_rate, S_IWUSR | S_IRUSR, show_retry_rate,
4039 store_retry_rate);
4040
4041 static ssize_t store_power_level(struct device *d,
4042 struct device_attribute *attr,
4043 const char *buf, size_t count)
4044 {
4045 struct iwl_priv *priv = dev_get_drvdata(d);
4046 int rc;
4047 int mode;
4048
4049 mode = simple_strtoul(buf, NULL, 0);
4050 mutex_lock(&priv->mutex);
4051
4052 if (!iwl_is_ready(priv)) {
4053 rc = -EAGAIN;
4054 goto out;
4055 }
4056
4057 rc = iwl_power_set_user_mode(priv, mode);
4058 if (rc) {
4059 IWL_DEBUG_MAC80211("failed setting power mode.\n");
4060 goto out;
4061 }
4062 rc = count;
4063
4064 out:
4065 mutex_unlock(&priv->mutex);
4066 return rc;
4067 }
4068
4069 #define MAX_WX_STRING 80
4070
4071 /* Values are in microsecond */
4072 static const s32 timeout_duration[] = {
4073 350000,
4074 250000,
4075 75000,
4076 37000,
4077 25000,
4078 };
4079 static const s32 period_duration[] = {
4080 400000,
4081 700000,
4082 1000000,
4083 1000000,
4084 1000000
4085 };
4086
4087 static ssize_t show_power_level(struct device *d,
4088 struct device_attribute *attr, char *buf)
4089 {
4090 struct iwl_priv *priv = dev_get_drvdata(d);
4091 int level = priv->power_data.power_mode;
4092 char *p = buf;
4093
4094 p += sprintf(p, "%d ", level);
4095 switch (level) {
4096 case IWL_POWER_MODE_CAM:
4097 case IWL_POWER_AC:
4098 p += sprintf(p, "(AC)");
4099 break;
4100 case IWL_POWER_BATTERY:
4101 p += sprintf(p, "(BATTERY)");
4102 break;
4103 default:
4104 p += sprintf(p,
4105 "(Timeout %dms, Period %dms)",
4106 timeout_duration[level - 1] / 1000,
4107 period_duration[level - 1] / 1000);
4108 }
4109 /*
4110 if (!(priv->power_mode & IWL_POWER_ENABLED))
4111 p += sprintf(p, " OFF\n");
4112 else
4113 p += sprintf(p, " \n");
4114 */
4115 p += sprintf(p, " \n");
4116 return (p - buf + 1);
4117 }
4118
4119 static DEVICE_ATTR(power_level, S_IWUSR | S_IRUSR, show_power_level,
4120 store_power_level);
4121
4122 static ssize_t show_channels(struct device *d,
4123 struct device_attribute *attr, char *buf)
4124 {
4125
4126 struct iwl_priv *priv = dev_get_drvdata(d);
4127 struct ieee80211_channel *channels = NULL;
4128 const struct ieee80211_supported_band *supp_band = NULL;
4129 int len = 0, i;
4130 int count = 0;
4131
4132 if (!test_bit(STATUS_GEO_CONFIGURED, &priv->status))
4133 return -EAGAIN;
4134
4135 supp_band = iwl_get_hw_mode(priv, IEEE80211_BAND_2GHZ);
4136 channels = supp_band->channels;
4137 count = supp_band->n_channels;
4138
4139 len += sprintf(&buf[len],
4140 "Displaying %d channels in 2.4GHz band "
4141 "(802.11bg):\n", count);
4142
4143 for (i = 0; i < count; i++)
4144 len += sprintf(&buf[len], "%d: %ddBm: BSS%s%s, %s.\n",
4145 ieee80211_frequency_to_channel(
4146 channels[i].center_freq),
4147 channels[i].max_power,
4148 channels[i].flags & IEEE80211_CHAN_RADAR ?
4149 " (IEEE 802.11h required)" : "",
4150 (!(channels[i].flags & IEEE80211_CHAN_NO_IBSS)
4151 || (channels[i].flags &
4152 IEEE80211_CHAN_RADAR)) ? "" :
4153 ", IBSS",
4154 channels[i].flags &
4155 IEEE80211_CHAN_PASSIVE_SCAN ?
4156 "passive only" : "active/passive");
4157
4158 supp_band = iwl_get_hw_mode(priv, IEEE80211_BAND_5GHZ);
4159 channels = supp_band->channels;
4160 count = supp_band->n_channels;
4161
4162 len += sprintf(&buf[len], "Displaying %d channels in 5.2GHz band "
4163 "(802.11a):\n", count);
4164
4165 for (i = 0; i < count; i++)
4166 len += sprintf(&buf[len], "%d: %ddBm: BSS%s%s, %s.\n",
4167 ieee80211_frequency_to_channel(
4168 channels[i].center_freq),
4169 channels[i].max_power,
4170 channels[i].flags & IEEE80211_CHAN_RADAR ?
4171 " (IEEE 802.11h required)" : "",
4172 ((channels[i].flags & IEEE80211_CHAN_NO_IBSS)
4173 || (channels[i].flags &
4174 IEEE80211_CHAN_RADAR)) ? "" :
4175 ", IBSS",
4176 channels[i].flags &
4177 IEEE80211_CHAN_PASSIVE_SCAN ?
4178 "passive only" : "active/passive");
4179
4180 return len;
4181 }
4182
4183 static DEVICE_ATTR(channels, S_IRUSR, show_channels, NULL);
4184
4185 static ssize_t show_statistics(struct device *d,
4186 struct device_attribute *attr, char *buf)
4187 {
4188 struct iwl_priv *priv = dev_get_drvdata(d);
4189 u32 size = sizeof(struct iwl4965_notif_statistics);
4190 u32 len = 0, ofs = 0;
4191 u8 *data = (u8 *) & priv->statistics;
4192 int rc = 0;
4193
4194 if (!iwl_is_alive(priv))
4195 return -EAGAIN;
4196
4197 mutex_lock(&priv->mutex);
4198 rc = iwl_send_statistics_request(priv, 0);
4199 mutex_unlock(&priv->mutex);
4200
4201 if (rc) {
4202 len = sprintf(buf,
4203 "Error sending statistics request: 0x%08X\n", rc);
4204 return len;
4205 }
4206
4207 while (size && (PAGE_SIZE - len)) {
4208 hex_dump_to_buffer(data + ofs, size, 16, 1, buf + len,
4209 PAGE_SIZE - len, 1);
4210 len = strlen(buf);
4211 if (PAGE_SIZE - len)
4212 buf[len++] = '\n';
4213
4214 ofs += 16;
4215 size -= min(size, 16U);
4216 }
4217
4218 return len;
4219 }
4220
4221 static DEVICE_ATTR(statistics, S_IRUGO, show_statistics, NULL);
4222
4223 static ssize_t show_status(struct device *d,
4224 struct device_attribute *attr, char *buf)
4225 {
4226 struct iwl_priv *priv = (struct iwl_priv *)d->driver_data;
4227 if (!iwl_is_alive(priv))
4228 return -EAGAIN;
4229 return sprintf(buf, "0x%08x\n", (int)priv->status);
4230 }
4231
4232 static DEVICE_ATTR(status, S_IRUGO, show_status, NULL);
4233
4234 /*****************************************************************************
4235 *
4236 * driver setup and teardown
4237 *
4238 *****************************************************************************/
4239
4240 static void iwl_setup_deferred_work(struct iwl_priv *priv)
4241 {
4242 priv->workqueue = create_workqueue(DRV_NAME);
4243
4244 init_waitqueue_head(&priv->wait_command_queue);
4245
4246 INIT_WORK(&priv->up, iwl4965_bg_up);
4247 INIT_WORK(&priv->restart, iwl4965_bg_restart);
4248 INIT_WORK(&priv->rx_replenish, iwl4965_bg_rx_replenish);
4249 INIT_WORK(&priv->rf_kill, iwl4965_bg_rf_kill);
4250 INIT_WORK(&priv->beacon_update, iwl4965_bg_beacon_update);
4251 INIT_WORK(&priv->set_monitor, iwl4965_bg_set_monitor);
4252 INIT_WORK(&priv->run_time_calib_work, iwl_bg_run_time_calib_work);
4253 INIT_DELAYED_WORK(&priv->post_associate, iwl4965_bg_post_associate);
4254 INIT_DELAYED_WORK(&priv->init_alive_start, iwl_bg_init_alive_start);
4255 INIT_DELAYED_WORK(&priv->alive_start, iwl_bg_alive_start);
4256
4257 /* FIXME : remove when resolved PENDING */
4258 INIT_WORK(&priv->scan_completed, iwl_bg_scan_completed);
4259 iwl_setup_scan_deferred_work(priv);
4260
4261 if (priv->cfg->ops->lib->setup_deferred_work)
4262 priv->cfg->ops->lib->setup_deferred_work(priv);
4263
4264 init_timer(&priv->statistics_periodic);
4265 priv->statistics_periodic.data = (unsigned long)priv;
4266 priv->statistics_periodic.function = iwl4965_bg_statistics_periodic;
4267
4268 tasklet_init(&priv->irq_tasklet, (void (*)(unsigned long))
4269 iwl4965_irq_tasklet, (unsigned long)priv);
4270 }
4271
4272 static void iwl_cancel_deferred_work(struct iwl_priv *priv)
4273 {
4274 if (priv->cfg->ops->lib->cancel_deferred_work)
4275 priv->cfg->ops->lib->cancel_deferred_work(priv);
4276
4277 cancel_delayed_work_sync(&priv->init_alive_start);
4278 cancel_delayed_work(&priv->scan_check);
4279 cancel_delayed_work(&priv->alive_start);
4280 cancel_delayed_work(&priv->post_associate);
4281 cancel_work_sync(&priv->beacon_update);
4282 del_timer_sync(&priv->statistics_periodic);
4283 }
4284
4285 static struct attribute *iwl4965_sysfs_entries[] = {
4286 &dev_attr_channels.attr,
4287 &dev_attr_flags.attr,
4288 &dev_attr_filter_flags.attr,
4289 #ifdef CONFIG_IWL4965_SPECTRUM_MEASUREMENT
4290 &dev_attr_measurement.attr,
4291 #endif
4292 &dev_attr_power_level.attr,
4293 &dev_attr_retry_rate.attr,
4294 &dev_attr_rs_window.attr,
4295 &dev_attr_statistics.attr,
4296 &dev_attr_status.attr,
4297 &dev_attr_temperature.attr,
4298 &dev_attr_tx_power.attr,
4299 #ifdef CONFIG_IWLWIFI_DEBUG
4300 &dev_attr_debug_level.attr,
4301 #endif
4302 &dev_attr_version.attr,
4303
4304 NULL
4305 };
4306
4307 static struct attribute_group iwl4965_attribute_group = {
4308 .name = NULL, /* put in device directory */
4309 .attrs = iwl4965_sysfs_entries,
4310 };
4311
4312 static struct ieee80211_ops iwl4965_hw_ops = {
4313 .tx = iwl4965_mac_tx,
4314 .start = iwl4965_mac_start,
4315 .stop = iwl4965_mac_stop,
4316 .add_interface = iwl4965_mac_add_interface,
4317 .remove_interface = iwl4965_mac_remove_interface,
4318 .config = iwl4965_mac_config,
4319 .config_interface = iwl4965_mac_config_interface,
4320 .configure_filter = iwl4965_configure_filter,
4321 .set_key = iwl4965_mac_set_key,
4322 .update_tkip_key = iwl4965_mac_update_tkip_key,
4323 .get_stats = iwl4965_mac_get_stats,
4324 .get_tx_stats = iwl4965_mac_get_tx_stats,
4325 .conf_tx = iwl4965_mac_conf_tx,
4326 .get_tsf = iwl4965_mac_get_tsf,
4327 .reset_tsf = iwl4965_mac_reset_tsf,
4328 .beacon_update = iwl4965_mac_beacon_update,
4329 .bss_info_changed = iwl4965_bss_info_changed,
4330 .ampdu_action = iwl4965_mac_ampdu_action,
4331 .hw_scan = iwl4965_mac_hw_scan
4332 };
4333
4334 static int iwl4965_pci_probe(struct pci_dev *pdev, const struct pci_device_id *ent)
4335 {
4336 int err = 0;
4337 struct iwl_priv *priv;
4338 struct ieee80211_hw *hw;
4339 struct iwl_cfg *cfg = (struct iwl_cfg *)(ent->driver_data);
4340 unsigned long flags;
4341 DECLARE_MAC_BUF(mac);
4342
4343 /************************
4344 * 1. Allocating HW data
4345 ************************/
4346
4347 /* Disabling hardware scan means that mac80211 will perform scans
4348 * "the hard way", rather than using device's scan. */
4349 if (cfg->mod_params->disable_hw_scan) {
4350 if (cfg->mod_params->debug & IWL_DL_INFO)
4351 dev_printk(KERN_DEBUG, &(pdev->dev),
4352 "Disabling hw_scan\n");
4353 iwl4965_hw_ops.hw_scan = NULL;
4354 }
4355
4356 hw = iwl_alloc_all(cfg, &iwl4965_hw_ops);
4357 if (!hw) {
4358 err = -ENOMEM;
4359 goto out;
4360 }
4361 priv = hw->priv;
4362 /* At this point both hw and priv are allocated. */
4363
4364 SET_IEEE80211_DEV(hw, &pdev->dev);
4365
4366 IWL_DEBUG_INFO("*** LOAD DRIVER ***\n");
4367 priv->cfg = cfg;
4368 priv->pci_dev = pdev;
4369
4370 #ifdef CONFIG_IWLWIFI_DEBUG
4371 priv->debug_level = priv->cfg->mod_params->debug;
4372 atomic_set(&priv->restrict_refcnt, 0);
4373 #endif
4374
4375 /**************************
4376 * 2. Initializing PCI bus
4377 **************************/
4378 if (pci_enable_device(pdev)) {
4379 err = -ENODEV;
4380 goto out_ieee80211_free_hw;
4381 }
4382
4383 pci_set_master(pdev);
4384
4385 err = pci_set_dma_mask(pdev, DMA_64BIT_MASK);
4386 if (!err)
4387 err = pci_set_consistent_dma_mask(pdev, DMA_64BIT_MASK);
4388 if (err) {
4389 err = pci_set_dma_mask(pdev, DMA_32BIT_MASK);
4390 if (!err)
4391 err = pci_set_consistent_dma_mask(pdev, DMA_32BIT_MASK);
4392 /* both attempts failed: */
4393 if (err) {
4394 printk(KERN_WARNING "%s: No suitable DMA available.\n",
4395 DRV_NAME);
4396 goto out_pci_disable_device;
4397 }
4398 }
4399
4400 err = pci_request_regions(pdev, DRV_NAME);
4401 if (err)
4402 goto out_pci_disable_device;
4403
4404 pci_set_drvdata(pdev, priv);
4405
4406 /* We disable the RETRY_TIMEOUT register (0x41) to keep
4407 * PCI Tx retries from interfering with C3 CPU state */
4408 pci_write_config_byte(pdev, 0x41, 0x00);
4409
4410 /***********************
4411 * 3. Read REV register
4412 ***********************/
4413 priv->hw_base = pci_iomap(pdev, 0, 0);
4414 if (!priv->hw_base) {
4415 err = -ENODEV;
4416 goto out_pci_release_regions;
4417 }
4418
4419 IWL_DEBUG_INFO("pci_resource_len = 0x%08llx\n",
4420 (unsigned long long) pci_resource_len(pdev, 0));
4421 IWL_DEBUG_INFO("pci_resource_base = %p\n", priv->hw_base);
4422
4423 iwl_hw_detect(priv);
4424 printk(KERN_INFO DRV_NAME
4425 ": Detected Intel Wireless WiFi Link %s REV=0x%X\n",
4426 priv->cfg->name, priv->hw_rev);
4427
4428 /* amp init */
4429 err = priv->cfg->ops->lib->apm_ops.init(priv);
4430 if (err < 0) {
4431 IWL_DEBUG_INFO("Failed to init APMG\n");
4432 goto out_iounmap;
4433 }
4434 /*****************
4435 * 4. Read EEPROM
4436 *****************/
4437 /* Read the EEPROM */
4438 err = iwl_eeprom_init(priv);
4439 if (err) {
4440 IWL_ERROR("Unable to init EEPROM\n");
4441 goto out_iounmap;
4442 }
4443 err = iwl_eeprom_check_version(priv);
4444 if (err)
4445 goto out_iounmap;
4446
4447 /* extract MAC Address */
4448 iwl_eeprom_get_mac(priv, priv->mac_addr);
4449 IWL_DEBUG_INFO("MAC address: %s\n", print_mac(mac, priv->mac_addr));
4450 SET_IEEE80211_PERM_ADDR(priv->hw, priv->mac_addr);
4451
4452 /************************
4453 * 5. Setup HW constants
4454 ************************/
4455 /* Device-specific setup */
4456 if (priv->cfg->ops->lib->set_hw_params(priv)) {
4457 IWL_ERROR("failed to set hw parameters\n");
4458 goto out_free_eeprom;
4459 }
4460
4461 /*******************
4462 * 6. Setup priv
4463 *******************/
4464
4465 err = iwl_init_drv(priv);
4466 if (err)
4467 goto out_free_eeprom;
4468 /* At this point both hw and priv are initialized. */
4469
4470 /**********************************
4471 * 7. Initialize module parameters
4472 **********************************/
4473
4474 /* Disable radio (SW RF KILL) via parameter when loading driver */
4475 if (priv->cfg->mod_params->disable) {
4476 set_bit(STATUS_RF_KILL_SW, &priv->status);
4477 IWL_DEBUG_INFO("Radio disabled.\n");
4478 }
4479
4480 /********************
4481 * 8. Setup services
4482 ********************/
4483 spin_lock_irqsave(&priv->lock, flags);
4484 iwl4965_disable_interrupts(priv);
4485 spin_unlock_irqrestore(&priv->lock, flags);
4486
4487 err = sysfs_create_group(&pdev->dev.kobj, &iwl4965_attribute_group);
4488 if (err) {
4489 IWL_ERROR("failed to create sysfs device attributes\n");
4490 goto out_uninit_drv;
4491 }
4492
4493
4494 iwl_setup_deferred_work(priv);
4495 iwl4965_setup_rx_handlers(priv);
4496
4497 /********************
4498 * 9. Conclude
4499 ********************/
4500 pci_save_state(pdev);
4501 pci_disable_device(pdev);
4502
4503 /**********************************
4504 * 10. Setup and register mac80211
4505 **********************************/
4506
4507 err = iwl_setup_mac(priv);
4508 if (err)
4509 goto out_remove_sysfs;
4510
4511 err = iwl_dbgfs_register(priv, DRV_NAME);
4512 if (err)
4513 IWL_ERROR("failed to create debugfs files\n");
4514
4515 err = iwl_rfkill_init(priv);
4516 if (err)
4517 IWL_ERROR("Unable to initialize RFKILL system. "
4518 "Ignoring error: %d\n", err);
4519 iwl_power_initialize(priv);
4520 return 0;
4521
4522 out_remove_sysfs:
4523 sysfs_remove_group(&pdev->dev.kobj, &iwl4965_attribute_group);
4524 out_uninit_drv:
4525 iwl_uninit_drv(priv);
4526 out_free_eeprom:
4527 iwl_eeprom_free(priv);
4528 out_iounmap:
4529 pci_iounmap(pdev, priv->hw_base);
4530 out_pci_release_regions:
4531 pci_release_regions(pdev);
4532 pci_set_drvdata(pdev, NULL);
4533 out_pci_disable_device:
4534 pci_disable_device(pdev);
4535 out_ieee80211_free_hw:
4536 ieee80211_free_hw(priv->hw);
4537 out:
4538 return err;
4539 }
4540
4541 static void __devexit iwl4965_pci_remove(struct pci_dev *pdev)
4542 {
4543 struct iwl_priv *priv = pci_get_drvdata(pdev);
4544 struct list_head *p, *q;
4545 int i;
4546 unsigned long flags;
4547
4548 if (!priv)
4549 return;
4550
4551 IWL_DEBUG_INFO("*** UNLOAD DRIVER ***\n");
4552
4553 iwl_dbgfs_unregister(priv);
4554 sysfs_remove_group(&pdev->dev.kobj, &iwl4965_attribute_group);
4555
4556 if (priv->mac80211_registered) {
4557 ieee80211_unregister_hw(priv->hw);
4558 priv->mac80211_registered = 0;
4559 }
4560
4561 set_bit(STATUS_EXIT_PENDING, &priv->status);
4562
4563 iwl4965_down(priv);
4564
4565 /* make sure we flush any pending irq or
4566 * tasklet for the driver
4567 */
4568 spin_lock_irqsave(&priv->lock, flags);
4569 iwl4965_disable_interrupts(priv);
4570 spin_unlock_irqrestore(&priv->lock, flags);
4571
4572 iwl_synchronize_irq(priv);
4573
4574 /* Free MAC hash list for ADHOC */
4575 for (i = 0; i < IWL_IBSS_MAC_HASH_SIZE; i++) {
4576 list_for_each_safe(p, q, &priv->ibss_mac_hash[i]) {
4577 list_del(p);
4578 kfree(list_entry(p, struct iwl4965_ibss_seq, list));
4579 }
4580 }
4581
4582 iwl_rfkill_unregister(priv);
4583 iwl4965_dealloc_ucode_pci(priv);
4584
4585 if (priv->rxq.bd)
4586 iwl_rx_queue_free(priv, &priv->rxq);
4587 iwl_hw_txq_ctx_free(priv);
4588
4589 iwlcore_clear_stations_table(priv);
4590 iwl_eeprom_free(priv);
4591
4592
4593 /*netif_stop_queue(dev); */
4594 flush_workqueue(priv->workqueue);
4595
4596 /* ieee80211_unregister_hw calls iwl4965_mac_stop, which flushes
4597 * priv->workqueue... so we can't take down the workqueue
4598 * until now... */
4599 destroy_workqueue(priv->workqueue);
4600 priv->workqueue = NULL;
4601
4602 pci_iounmap(pdev, priv->hw_base);
4603 pci_release_regions(pdev);
4604 pci_disable_device(pdev);
4605 pci_set_drvdata(pdev, NULL);
4606
4607 iwl_uninit_drv(priv);
4608
4609 if (priv->ibss_beacon)
4610 dev_kfree_skb(priv->ibss_beacon);
4611
4612 ieee80211_free_hw(priv->hw);
4613 }
4614
4615 #ifdef CONFIG_PM
4616
4617 static int iwl4965_pci_suspend(struct pci_dev *pdev, pm_message_t state)
4618 {
4619 struct iwl_priv *priv = pci_get_drvdata(pdev);
4620
4621 if (priv->is_open) {
4622 set_bit(STATUS_IN_SUSPEND, &priv->status);
4623 iwl4965_mac_stop(priv->hw);
4624 priv->is_open = 1;
4625 }
4626
4627 pci_set_power_state(pdev, PCI_D3hot);
4628
4629 return 0;
4630 }
4631
4632 static int iwl4965_pci_resume(struct pci_dev *pdev)
4633 {
4634 struct iwl_priv *priv = pci_get_drvdata(pdev);
4635
4636 pci_set_power_state(pdev, PCI_D0);
4637
4638 if (priv->is_open)
4639 iwl4965_mac_start(priv->hw);
4640
4641 clear_bit(STATUS_IN_SUSPEND, &priv->status);
4642 return 0;
4643 }
4644
4645 #endif /* CONFIG_PM */
4646
4647 /*****************************************************************************
4648 *
4649 * driver and module entry point
4650 *
4651 *****************************************************************************/
4652
4653 /* Hardware specific file defines the PCI IDs table for that hardware module */
4654 static struct pci_device_id iwl_hw_card_ids[] = {
4655 {IWL_PCI_DEVICE(0x4229, PCI_ANY_ID, iwl4965_agn_cfg)},
4656 {IWL_PCI_DEVICE(0x4230, PCI_ANY_ID, iwl4965_agn_cfg)},
4657 #ifdef CONFIG_IWL5000
4658 {IWL_PCI_DEVICE(0x4235, PCI_ANY_ID, iwl5300_agn_cfg)},
4659 {IWL_PCI_DEVICE(0x4232, PCI_ANY_ID, iwl5100_agn_cfg)},
4660 {IWL_PCI_DEVICE(0x423A, PCI_ANY_ID, iwl5350_agn_cfg)},
4661 #endif /* CONFIG_IWL5000 */
4662 {0}
4663 };
4664 MODULE_DEVICE_TABLE(pci, iwl_hw_card_ids);
4665
4666 static struct pci_driver iwl_driver = {
4667 .name = DRV_NAME,
4668 .id_table = iwl_hw_card_ids,
4669 .probe = iwl4965_pci_probe,
4670 .remove = __devexit_p(iwl4965_pci_remove),
4671 #ifdef CONFIG_PM
4672 .suspend = iwl4965_pci_suspend,
4673 .resume = iwl4965_pci_resume,
4674 #endif
4675 };
4676
4677 static int __init iwl4965_init(void)
4678 {
4679
4680 int ret;
4681 printk(KERN_INFO DRV_NAME ": " DRV_DESCRIPTION ", " DRV_VERSION "\n");
4682 printk(KERN_INFO DRV_NAME ": " DRV_COPYRIGHT "\n");
4683
4684 ret = iwl4965_rate_control_register();
4685 if (ret) {
4686 IWL_ERROR("Unable to register rate control algorithm: %d\n", ret);
4687 return ret;
4688 }
4689
4690 ret = pci_register_driver(&iwl_driver);
4691 if (ret) {
4692 IWL_ERROR("Unable to initialize PCI module\n");
4693 goto error_register;
4694 }
4695
4696 return ret;
4697
4698 error_register:
4699 iwl4965_rate_control_unregister();
4700 return ret;
4701 }
4702
4703 static void __exit iwl4965_exit(void)
4704 {
4705 pci_unregister_driver(&iwl_driver);
4706 iwl4965_rate_control_unregister();
4707 }
4708
4709 module_exit(iwl4965_exit);
4710 module_init(iwl4965_init);
Support for the Chinese Samsung S3C2440 based development boards