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iwlwifi: clean up HW RF-kill state machine and restarts
[linux-2.6/linux-acpi-2.6/ibm-acpi-2.6.git] / drivers / net / wireless / iwlwifi / iwl4965-base.c
bloba4aebe19600326b4b2f2a0eaa4e067981e246b57
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 (!(iwl_is_associated(priv)) ||
196 compare_ether_addr(priv->staging_rxon.bssid_addr,
197 priv->active_rxon.bssid_addr) ||
198 compare_ether_addr(priv->staging_rxon.node_addr,
199 priv->active_rxon.node_addr) ||
200 compare_ether_addr(priv->staging_rxon.wlap_bssid_addr,
201 priv->active_rxon.wlap_bssid_addr) ||
202 (priv->staging_rxon.dev_type != priv->active_rxon.dev_type) ||
203 (priv->staging_rxon.channel != priv->active_rxon.channel) ||
204 (priv->staging_rxon.air_propagation !=
205 priv->active_rxon.air_propagation) ||
206 (priv->staging_rxon.ofdm_ht_single_stream_basic_rates !=
207 priv->active_rxon.ofdm_ht_single_stream_basic_rates) ||
208 (priv->staging_rxon.ofdm_ht_dual_stream_basic_rates !=
209 priv->active_rxon.ofdm_ht_dual_stream_basic_rates) ||
210 (priv->staging_rxon.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 ret;
245 bool new_assoc =
246 !!(priv->staging_rxon.filter_flags & RXON_FILTER_ASSOC_MSK);
247
248 if (!iwl_is_alive(priv))
249 return -EBUSY;
250
251 /* always get timestamp with Rx frame */
252 priv->staging_rxon.flags |= RXON_FLG_TSF2HOST_MSK;
253
254 ret = iwl4965_check_rxon_cmd(&priv->staging_rxon);
255 if (ret) {
256 IWL_ERROR("Invalid RXON configuration. Not committing.\n");
257 return -EINVAL;
258 }
259
260 /* If we don't need to send a full RXON, we can use
261 * iwl4965_rxon_assoc_cmd which is used to reconfigure filter
262 * and other flags for the current radio configuration. */
263 if (!iwl4965_full_rxon_required(priv)) {
264 ret = iwl_send_rxon_assoc(priv);
265 if (ret) {
266 IWL_ERROR("Error setting RXON_ASSOC (%d)\n", ret);
267 return ret;
268 }
269
270 memcpy(active_rxon, &priv->staging_rxon, sizeof(*active_rxon));
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) && new_assoc) {
282 IWL_DEBUG_INFO("Toggling associated bit on current RXON\n");
283 active_rxon->filter_flags &= ~RXON_FILTER_ASSOC_MSK;
284
285 ret = iwl_send_cmd_pdu(priv, REPLY_RXON,
286 sizeof(struct iwl_rxon_cmd),
287 &priv->active_rxon);
288
289 /* If the mask clearing failed then we set
290 * active_rxon back to what it was previously */
291 if (ret) {
292 active_rxon->filter_flags |= RXON_FILTER_ASSOC_MSK;
293 IWL_ERROR("Error clearing ASSOC_MSK (%d)\n", ret);
294 return ret;
295 }
296 }
297
298 IWL_DEBUG_INFO("Sending RXON\n"
299 "* with%s RXON_FILTER_ASSOC_MSK\n"
300 "* channel = %d\n"
301 "* bssid = %s\n",
302 (new_assoc ? "" : "out"),
303 le16_to_cpu(priv->staging_rxon.channel),
304 print_mac(mac, priv->staging_rxon.bssid_addr));
305
306 iwl4965_set_rxon_hwcrypto(priv, !priv->hw_params.sw_crypto);
307
308 /* Apply the new configuration
309 * RXON unassoc clears the station table in uCode, send it before
310 * we add the bcast station. If assoc bit is set, we will send RXON
311 * after having added the bcast and bssid station.
312 */
313 if (!new_assoc) {
314 ret = iwl_send_cmd_pdu(priv, REPLY_RXON,
315 sizeof(struct iwl_rxon_cmd), &priv->staging_rxon);
316 if (ret) {
317 IWL_ERROR("Error setting new RXON (%d)\n", ret);
318 return ret;
319 }
320 memcpy(active_rxon, &priv->staging_rxon, sizeof(*active_rxon));
321 }
322
323 iwl_clear_stations_table(priv);
324
325 if (!priv->error_recovering)
326 priv->start_calib = 0;
327
328 iwl_init_sensitivity(priv);
329
330 /* If we issue a new RXON command which required a tune then we must
331 * send a new TXPOWER command or we won't be able to Tx any frames */
332 ret = iwl_set_tx_power(priv, priv->tx_power_user_lmt, true);
333 if (ret) {
334 IWL_ERROR("Error sending TX power (%d)\n", ret);
335 return ret;
336 }
337
338 /* Add the broadcast address so we can send broadcast frames */
339 if (iwl_rxon_add_station(priv, iwl_bcast_addr, 0) ==
340 IWL_INVALID_STATION) {
341 IWL_ERROR("Error adding BROADCAST address for transmit.\n");
342 return -EIO;
343 }
344
345 /* If we have set the ASSOC_MSK and we are in BSS mode then
346 * add the IWL_AP_ID to the station rate table */
347 if (new_assoc) {
348 if (priv->iw_mode == IEEE80211_IF_TYPE_STA) {
349 ret = iwl_rxon_add_station(priv,
350 priv->active_rxon.bssid_addr, 1);
351 if (ret == IWL_INVALID_STATION) {
352 IWL_ERROR("Error adding AP address for TX.\n");
353 return -EIO;
354 }
355 priv->assoc_station_added = 1;
356 if (priv->default_wep_key &&
357 iwl_send_static_wepkey_cmd(priv, 0))
358 IWL_ERROR("Could not send WEP static key.\n");
359 }
360
361 /* Apply the new configuration
362 * RXON assoc doesn't clear the station table in uCode,
363 */
364 ret = iwl_send_cmd_pdu(priv, REPLY_RXON,
365 sizeof(struct iwl_rxon_cmd), &priv->staging_rxon);
366 if (ret) {
367 IWL_ERROR("Error setting new RXON (%d)\n", ret);
368 return ret;
369 }
370 memcpy(active_rxon, &priv->staging_rxon, sizeof(*active_rxon));
371 }
372
373 return 0;
374 }
375
376 void iwl4965_update_chain_flags(struct iwl_priv *priv)
377 {
378
379 iwl_set_rxon_chain(priv);
380 iwl4965_commit_rxon(priv);
381 }
382
383 static int iwl4965_send_bt_config(struct iwl_priv *priv)
384 {
385 struct iwl4965_bt_cmd bt_cmd = {
386 .flags = 3,
387 .lead_time = 0xAA,
388 .max_kill = 1,
389 .kill_ack_mask = 0,
390 .kill_cts_mask = 0,
391 };
392
393 return iwl_send_cmd_pdu(priv, REPLY_BT_CONFIG,
394 sizeof(struct iwl4965_bt_cmd), &bt_cmd);
395 }
396
397 static void iwl_clear_free_frames(struct iwl_priv *priv)
398 {
399 struct list_head *element;
400
401 IWL_DEBUG_INFO("%d frames on pre-allocated heap on clear.\n",
402 priv->frames_count);
403
404 while (!list_empty(&priv->free_frames)) {
405 element = priv->free_frames.next;
406 list_del(element);
407 kfree(list_entry(element, struct iwl_frame, list));
408 priv->frames_count--;
409 }
410
411 if (priv->frames_count) {
412 IWL_WARNING("%d frames still in use. Did we lose one?\n",
413 priv->frames_count);
414 priv->frames_count = 0;
415 }
416 }
417
418 static struct iwl_frame *iwl_get_free_frame(struct iwl_priv *priv)
419 {
420 struct iwl_frame *frame;
421 struct list_head *element;
422 if (list_empty(&priv->free_frames)) {
423 frame = kzalloc(sizeof(*frame), GFP_KERNEL);
424 if (!frame) {
425 IWL_ERROR("Could not allocate frame!\n");
426 return NULL;
427 }
428
429 priv->frames_count++;
430 return frame;
431 }
432
433 element = priv->free_frames.next;
434 list_del(element);
435 return list_entry(element, struct iwl_frame, list);
436 }
437
438 static void iwl_free_frame(struct iwl_priv *priv, struct iwl_frame *frame)
439 {
440 memset(frame, 0, sizeof(*frame));
441 list_add(&frame->list, &priv->free_frames);
442 }
443
444 unsigned int iwl4965_fill_beacon_frame(struct iwl_priv *priv,
445 struct ieee80211_hdr *hdr,
446 const u8 *dest, int left)
447 {
448
449 if (!iwl_is_associated(priv) || !priv->ibss_beacon ||
450 ((priv->iw_mode != IEEE80211_IF_TYPE_IBSS) &&
451 (priv->iw_mode != IEEE80211_IF_TYPE_AP)))
452 return 0;
453
454 if (priv->ibss_beacon->len > left)
455 return 0;
456
457 memcpy(hdr, priv->ibss_beacon->data, priv->ibss_beacon->len);
458
459 return priv->ibss_beacon->len;
460 }
461
462 static u8 iwl4965_rate_get_lowest_plcp(struct iwl_priv *priv)
463 {
464 int i;
465 int rate_mask;
466
467 /* Set rate mask*/
468 if (priv->staging_rxon.flags & RXON_FLG_BAND_24G_MSK)
469 rate_mask = priv->active_rate_basic & 0xF;
470 else
471 rate_mask = priv->active_rate_basic & 0xFF0;
472
473 /* Find lowest valid rate */
474 for (i = IWL_RATE_1M_INDEX; i != IWL_RATE_INVALID;
475 i = iwl_rates[i].next_ieee) {
476 if (rate_mask & (1 << i))
477 return iwl_rates[i].plcp;
478 }
479
480 /* No valid rate was found. Assign the lowest one */
481 if (priv->staging_rxon.flags & RXON_FLG_BAND_24G_MSK)
482 return IWL_RATE_1M_PLCP;
483 else
484 return IWL_RATE_6M_PLCP;
485 }
486
487 static int iwl4965_send_beacon_cmd(struct iwl_priv *priv)
488 {
489 struct iwl_frame *frame;
490 unsigned int frame_size;
491 int rc;
492 u8 rate;
493
494 frame = iwl_get_free_frame(priv);
495
496 if (!frame) {
497 IWL_ERROR("Could not obtain free frame buffer for beacon "
498 "command.\n");
499 return -ENOMEM;
500 }
501
502 rate = iwl4965_rate_get_lowest_plcp(priv);
503
504 frame_size = iwl4965_hw_get_beacon_cmd(priv, frame, rate);
505
506 rc = iwl_send_cmd_pdu(priv, REPLY_TX_BEACON, frame_size,
507 &frame->u.cmd[0]);
508
509 iwl_free_frame(priv, frame);
510
511 return rc;
512 }
513
514 /******************************************************************************
515 *
516 * Misc. internal state and helper functions
517 *
518 ******************************************************************************/
519
520 static void iwl4965_ht_conf(struct iwl_priv *priv,
521 struct ieee80211_bss_conf *bss_conf)
522 {
523 struct ieee80211_ht_info *ht_conf = bss_conf->ht_conf;
524 struct ieee80211_ht_bss_info *ht_bss_conf = bss_conf->ht_bss_conf;
525 struct iwl_ht_info *iwl_conf = &priv->current_ht_config;
526
527 IWL_DEBUG_MAC80211("enter: \n");
528
529 iwl_conf->is_ht = bss_conf->assoc_ht;
530
531 if (!iwl_conf->is_ht)
532 return;
533
534 priv->ps_mode = (u8)((ht_conf->cap & IEEE80211_HT_CAP_MIMO_PS) >> 2);
535
536 if (ht_conf->cap & IEEE80211_HT_CAP_SGI_20)
537 iwl_conf->sgf |= HT_SHORT_GI_20MHZ;
538 if (ht_conf->cap & IEEE80211_HT_CAP_SGI_40)
539 iwl_conf->sgf |= HT_SHORT_GI_40MHZ;
540
541 iwl_conf->is_green_field = !!(ht_conf->cap & IEEE80211_HT_CAP_GRN_FLD);
542 iwl_conf->max_amsdu_size =
543 !!(ht_conf->cap & IEEE80211_HT_CAP_MAX_AMSDU);
544
545 iwl_conf->supported_chan_width =
546 !!(ht_conf->cap & IEEE80211_HT_CAP_SUP_WIDTH);
547 iwl_conf->extension_chan_offset =
548 ht_bss_conf->bss_cap & IEEE80211_HT_IE_CHA_SEC_OFFSET;
549 /* If no above or below channel supplied disable FAT channel */
550 if (iwl_conf->extension_chan_offset != IEEE80211_HT_IE_CHA_SEC_ABOVE &&
551 iwl_conf->extension_chan_offset != IEEE80211_HT_IE_CHA_SEC_BELOW) {
552 iwl_conf->extension_chan_offset = IEEE80211_HT_IE_CHA_SEC_NONE;
553 iwl_conf->supported_chan_width = 0;
554 }
555
556 iwl_conf->tx_mimo_ps_mode =
557 (u8)((ht_conf->cap & IEEE80211_HT_CAP_MIMO_PS) >> 2);
558 memcpy(iwl_conf->supp_mcs_set, ht_conf->supp_mcs_set, 16);
559
560 iwl_conf->control_channel = ht_bss_conf->primary_channel;
561 iwl_conf->tx_chan_width =
562 !!(ht_bss_conf->bss_cap & IEEE80211_HT_IE_CHA_WIDTH);
563 iwl_conf->ht_protection =
564 ht_bss_conf->bss_op_mode & IEEE80211_HT_IE_HT_PROTECTION;
565 iwl_conf->non_GF_STA_present =
566 !!(ht_bss_conf->bss_op_mode & IEEE80211_HT_IE_NON_GF_STA_PRSNT);
567
568 IWL_DEBUG_MAC80211("control channel %d\n", iwl_conf->control_channel);
569 IWL_DEBUG_MAC80211("leave\n");
570 }
571
572 /*
573 * QoS support
574 */
575 static int iwl4965_send_qos_params_command(struct iwl_priv *priv,
576 struct iwl4965_qosparam_cmd *qos)
577 {
578
579 return iwl_send_cmd_pdu(priv, REPLY_QOS_PARAM,
580 sizeof(struct iwl4965_qosparam_cmd), qos);
581 }
582
583 static void iwl4965_activate_qos(struct iwl_priv *priv, u8 force)
584 {
585 unsigned long flags;
586
587 if (test_bit(STATUS_EXIT_PENDING, &priv->status))
588 return;
589
590 if (!priv->qos_data.qos_enable)
591 return;
592
593 spin_lock_irqsave(&priv->lock, flags);
594 priv->qos_data.def_qos_parm.qos_flags = 0;
595
596 if (priv->qos_data.qos_cap.q_AP.queue_request &&
597 !priv->qos_data.qos_cap.q_AP.txop_request)
598 priv->qos_data.def_qos_parm.qos_flags |=
599 QOS_PARAM_FLG_TXOP_TYPE_MSK;
600 if (priv->qos_data.qos_active)
601 priv->qos_data.def_qos_parm.qos_flags |=
602 QOS_PARAM_FLG_UPDATE_EDCA_MSK;
603
604 if (priv->current_ht_config.is_ht)
605 priv->qos_data.def_qos_parm.qos_flags |= QOS_PARAM_FLG_TGN_MSK;
606
607 spin_unlock_irqrestore(&priv->lock, flags);
608
609 if (force || iwl_is_associated(priv)) {
610 IWL_DEBUG_QOS("send QoS cmd with Qos active=%d FLAGS=0x%X\n",
611 priv->qos_data.qos_active,
612 priv->qos_data.def_qos_parm.qos_flags);
613
614 iwl4965_send_qos_params_command(priv,
615 &(priv->qos_data.def_qos_parm));
616 }
617 }
618
619 #define MAX_UCODE_BEACON_INTERVAL 4096
620 #define INTEL_CONN_LISTEN_INTERVAL __constant_cpu_to_le16(0xA)
621
622 static __le16 iwl4965_adjust_beacon_interval(u16 beacon_val)
623 {
624 u16 new_val = 0;
625 u16 beacon_factor = 0;
626
627 beacon_factor =
628 (beacon_val + MAX_UCODE_BEACON_INTERVAL)
629 / MAX_UCODE_BEACON_INTERVAL;
630 new_val = beacon_val / beacon_factor;
631
632 return cpu_to_le16(new_val);
633 }
634
635 static void iwl4965_setup_rxon_timing(struct iwl_priv *priv)
636 {
637 u64 interval_tm_unit;
638 u64 tsf, result;
639 unsigned long flags;
640 struct ieee80211_conf *conf = NULL;
641 u16 beacon_int = 0;
642
643 conf = ieee80211_get_hw_conf(priv->hw);
644
645 spin_lock_irqsave(&priv->lock, flags);
646 priv->rxon_timing.timestamp.dw[1] = cpu_to_le32(priv->timestamp >> 32);
647 priv->rxon_timing.timestamp.dw[0] =
648 cpu_to_le32(priv->timestamp & 0xFFFFFFFF);
649
650 priv->rxon_timing.listen_interval = INTEL_CONN_LISTEN_INTERVAL;
651
652 tsf = priv->timestamp;
653
654 beacon_int = priv->beacon_int;
655 spin_unlock_irqrestore(&priv->lock, flags);
656
657 if (priv->iw_mode == IEEE80211_IF_TYPE_STA) {
658 if (beacon_int == 0) {
659 priv->rxon_timing.beacon_interval = cpu_to_le16(100);
660 priv->rxon_timing.beacon_init_val = cpu_to_le32(102400);
661 } else {
662 priv->rxon_timing.beacon_interval =
663 cpu_to_le16(beacon_int);
664 priv->rxon_timing.beacon_interval =
665 iwl4965_adjust_beacon_interval(
666 le16_to_cpu(priv->rxon_timing.beacon_interval));
667 }
668
669 priv->rxon_timing.atim_window = 0;
670 } else {
671 priv->rxon_timing.beacon_interval =
672 iwl4965_adjust_beacon_interval(conf->beacon_int);
673 /* TODO: we need to get atim_window from upper stack
674 * for now we set to 0 */
675 priv->rxon_timing.atim_window = 0;
676 }
677
678 interval_tm_unit =
679 (le16_to_cpu(priv->rxon_timing.beacon_interval) * 1024);
680 result = do_div(tsf, interval_tm_unit);
681 priv->rxon_timing.beacon_init_val =
682 cpu_to_le32((u32) ((u64) interval_tm_unit - result));
683
684 IWL_DEBUG_ASSOC
685 ("beacon interval %d beacon timer %d beacon tim %d\n",
686 le16_to_cpu(priv->rxon_timing.beacon_interval),
687 le32_to_cpu(priv->rxon_timing.beacon_init_val),
688 le16_to_cpu(priv->rxon_timing.atim_window));
689 }
690
691 static void iwl_set_flags_for_band(struct iwl_priv *priv,
692 enum ieee80211_band band)
693 {
694 if (band == IEEE80211_BAND_5GHZ) {
695 priv->staging_rxon.flags &=
696 ~(RXON_FLG_BAND_24G_MSK | RXON_FLG_AUTO_DETECT_MSK
697 | RXON_FLG_CCK_MSK);
698 priv->staging_rxon.flags |= RXON_FLG_SHORT_SLOT_MSK;
699 } else {
700 /* Copied from iwl4965_post_associate() */
701 if (priv->assoc_capability & WLAN_CAPABILITY_SHORT_SLOT_TIME)
702 priv->staging_rxon.flags |= RXON_FLG_SHORT_SLOT_MSK;
703 else
704 priv->staging_rxon.flags &= ~RXON_FLG_SHORT_SLOT_MSK;
705
706 if (priv->iw_mode == IEEE80211_IF_TYPE_IBSS)
707 priv->staging_rxon.flags &= ~RXON_FLG_SHORT_SLOT_MSK;
708
709 priv->staging_rxon.flags |= RXON_FLG_BAND_24G_MSK;
710 priv->staging_rxon.flags |= RXON_FLG_AUTO_DETECT_MSK;
711 priv->staging_rxon.flags &= ~RXON_FLG_CCK_MSK;
712 }
713 }
714
715 /*
716 * initialize rxon structure with default values from eeprom
717 */
718 static void iwl4965_connection_init_rx_config(struct iwl_priv *priv)
719 {
720 const struct iwl_channel_info *ch_info;
721
722 memset(&priv->staging_rxon, 0, sizeof(priv->staging_rxon));
723
724 switch (priv->iw_mode) {
725 case IEEE80211_IF_TYPE_AP:
726 priv->staging_rxon.dev_type = RXON_DEV_TYPE_AP;
727 break;
728
729 case IEEE80211_IF_TYPE_STA:
730 priv->staging_rxon.dev_type = RXON_DEV_TYPE_ESS;
731 priv->staging_rxon.filter_flags = RXON_FILTER_ACCEPT_GRP_MSK;
732 break;
733
734 case IEEE80211_IF_TYPE_IBSS:
735 priv->staging_rxon.dev_type = RXON_DEV_TYPE_IBSS;
736 priv->staging_rxon.flags = RXON_FLG_SHORT_PREAMBLE_MSK;
737 priv->staging_rxon.filter_flags = RXON_FILTER_BCON_AWARE_MSK |
738 RXON_FILTER_ACCEPT_GRP_MSK;
739 break;
740
741 case IEEE80211_IF_TYPE_MNTR:
742 priv->staging_rxon.dev_type = RXON_DEV_TYPE_SNIFFER;
743 priv->staging_rxon.filter_flags = RXON_FILTER_PROMISC_MSK |
744 RXON_FILTER_CTL2HOST_MSK | RXON_FILTER_ACCEPT_GRP_MSK;
745 break;
746 default:
747 IWL_ERROR("Unsupported interface type %d\n", priv->iw_mode);
748 break;
749 }
750
751 #if 0
752 /* TODO: Figure out when short_preamble would be set and cache from
753 * that */
754 if (!hw_to_local(priv->hw)->short_preamble)
755 priv->staging_rxon.flags &= ~RXON_FLG_SHORT_PREAMBLE_MSK;
756 else
757 priv->staging_rxon.flags |= RXON_FLG_SHORT_PREAMBLE_MSK;
758 #endif
759
760 ch_info = iwl_get_channel_info(priv, priv->band,
761 le16_to_cpu(priv->staging_rxon.channel));
762
763 if (!ch_info)
764 ch_info = &priv->channel_info[0];
765
766 /*
767 * in some case A channels are all non IBSS
768 * in this case force B/G channel
769 */
770 if ((priv->iw_mode == IEEE80211_IF_TYPE_IBSS) &&
771 !(is_channel_ibss(ch_info)))
772 ch_info = &priv->channel_info[0];
773
774 priv->staging_rxon.channel = cpu_to_le16(ch_info->channel);
775 priv->band = ch_info->band;
776
777 iwl_set_flags_for_band(priv, priv->band);
778
779 priv->staging_rxon.ofdm_basic_rates =
780 (IWL_OFDM_RATES_MASK >> IWL_FIRST_OFDM_RATE) & 0xFF;
781 priv->staging_rxon.cck_basic_rates =
782 (IWL_CCK_RATES_MASK >> IWL_FIRST_CCK_RATE) & 0xF;
783
784 priv->staging_rxon.flags &= ~(RXON_FLG_CHANNEL_MODE_MIXED_MSK |
785 RXON_FLG_CHANNEL_MODE_PURE_40_MSK);
786 memcpy(priv->staging_rxon.node_addr, priv->mac_addr, ETH_ALEN);
787 memcpy(priv->staging_rxon.wlap_bssid_addr, priv->mac_addr, ETH_ALEN);
788 priv->staging_rxon.ofdm_ht_single_stream_basic_rates = 0xff;
789 priv->staging_rxon.ofdm_ht_dual_stream_basic_rates = 0xff;
790 iwl_set_rxon_chain(priv);
791 }
792
793 static int iwl4965_set_mode(struct iwl_priv *priv, int mode)
794 {
795 priv->iw_mode = mode;
796
797 /* init channel/phymode to values given at driver init */
798 iwl_set_rxon_channel(priv, IEEE80211_BAND_2GHZ, 6);
799
800 iwl4965_connection_init_rx_config(priv);
801 memcpy(priv->staging_rxon.node_addr, priv->mac_addr, ETH_ALEN);
802
803 iwl_clear_stations_table(priv);
804
805 /* dont commit rxon if rf-kill is on*/
806 if (!iwl_is_ready_rf(priv))
807 return -EAGAIN;
808
809 cancel_delayed_work(&priv->scan_check);
810 if (iwl_scan_cancel_timeout(priv, 100)) {
811 IWL_WARNING("Aborted scan still in progress after 100ms\n");
812 IWL_DEBUG_MAC80211("leaving - scan abort failed.\n");
813 return -EAGAIN;
814 }
815
816 iwl4965_commit_rxon(priv);
817
818 return 0;
819 }
820
821 static void iwl4965_set_rate(struct iwl_priv *priv)
822 {
823 const struct ieee80211_supported_band *hw = NULL;
824 struct ieee80211_rate *rate;
825 int i;
826
827 hw = iwl_get_hw_mode(priv, priv->band);
828 if (!hw) {
829 IWL_ERROR("Failed to set rate: unable to get hw mode\n");
830 return;
831 }
832
833 priv->active_rate = 0;
834 priv->active_rate_basic = 0;
835
836 for (i = 0; i < hw->n_bitrates; i++) {
837 rate = &(hw->bitrates[i]);
838 if (rate->hw_value < IWL_RATE_COUNT)
839 priv->active_rate |= (1 << rate->hw_value);
840 }
841
842 IWL_DEBUG_RATE("Set active_rate = %0x, active_rate_basic = %0x\n",
843 priv->active_rate, priv->active_rate_basic);
844
845 /*
846 * If a basic rate is configured, then use it (adding IWL_RATE_1M_MASK)
847 * otherwise set it to the default of all CCK rates and 6, 12, 24 for
848 * OFDM
849 */
850 if (priv->active_rate_basic & IWL_CCK_BASIC_RATES_MASK)
851 priv->staging_rxon.cck_basic_rates =
852 ((priv->active_rate_basic &
853 IWL_CCK_RATES_MASK) >> IWL_FIRST_CCK_RATE) & 0xF;
854 else
855 priv->staging_rxon.cck_basic_rates =
856 (IWL_CCK_BASIC_RATES_MASK >> IWL_FIRST_CCK_RATE) & 0xF;
857
858 if (priv->active_rate_basic & IWL_OFDM_BASIC_RATES_MASK)
859 priv->staging_rxon.ofdm_basic_rates =
860 ((priv->active_rate_basic &
861 (IWL_OFDM_BASIC_RATES_MASK | IWL_RATE_6M_MASK)) >>
862 IWL_FIRST_OFDM_RATE) & 0xFF;
863 else
864 priv->staging_rxon.ofdm_basic_rates =
865 (IWL_OFDM_BASIC_RATES_MASK >> IWL_FIRST_OFDM_RATE) & 0xFF;
866 }
867
868 #ifdef CONFIG_IWL4965_SPECTRUM_MEASUREMENT
869
870 #include "iwl-spectrum.h"
871
872 #define BEACON_TIME_MASK_LOW 0x00FFFFFF
873 #define BEACON_TIME_MASK_HIGH 0xFF000000
874 #define TIME_UNIT 1024
875
876 /*
877 * extended beacon time format
878 * time in usec will be changed into a 32-bit value in 8:24 format
879 * the high 1 byte is the beacon counts
880 * the lower 3 bytes is the time in usec within one beacon interval
881 */
882
883 static u32 iwl4965_usecs_to_beacons(u32 usec, u32 beacon_interval)
884 {
885 u32 quot;
886 u32 rem;
887 u32 interval = beacon_interval * 1024;
888
889 if (!interval || !usec)
890 return 0;
891
892 quot = (usec / interval) & (BEACON_TIME_MASK_HIGH >> 24);
893 rem = (usec % interval) & BEACON_TIME_MASK_LOW;
894
895 return (quot << 24) + rem;
896 }
897
898 /* base is usually what we get from ucode with each received frame,
899 * the same as HW timer counter counting down
900 */
901
902 static __le32 iwl4965_add_beacon_time(u32 base, u32 addon, u32 beacon_interval)
903 {
904 u32 base_low = base & BEACON_TIME_MASK_LOW;
905 u32 addon_low = addon & BEACON_TIME_MASK_LOW;
906 u32 interval = beacon_interval * TIME_UNIT;
907 u32 res = (base & BEACON_TIME_MASK_HIGH) +
908 (addon & BEACON_TIME_MASK_HIGH);
909
910 if (base_low > addon_low)
911 res += base_low - addon_low;
912 else if (base_low < addon_low) {
913 res += interval + base_low - addon_low;
914 res += (1 << 24);
915 } else
916 res += (1 << 24);
917
918 return cpu_to_le32(res);
919 }
920
921 static int iwl4965_get_measurement(struct iwl_priv *priv,
922 struct ieee80211_measurement_params *params,
923 u8 type)
924 {
925 struct iwl4965_spectrum_cmd spectrum;
926 struct iwl_rx_packet *res;
927 struct iwl_host_cmd cmd = {
928 .id = REPLY_SPECTRUM_MEASUREMENT_CMD,
929 .data = (void *)&spectrum,
930 .meta.flags = CMD_WANT_SKB,
931 };
932 u32 add_time = le64_to_cpu(params->start_time);
933 int rc;
934 int spectrum_resp_status;
935 int duration = le16_to_cpu(params->duration);
936
937 if (iwl_is_associated(priv))
938 add_time =
939 iwl4965_usecs_to_beacons(
940 le64_to_cpu(params->start_time) - priv->last_tsf,
941 le16_to_cpu(priv->rxon_timing.beacon_interval));
942
943 memset(&spectrum, 0, sizeof(spectrum));
944
945 spectrum.channel_count = cpu_to_le16(1);
946 spectrum.flags =
947 RXON_FLG_TSF2HOST_MSK | RXON_FLG_ANT_A_MSK | RXON_FLG_DIS_DIV_MSK;
948 spectrum.filter_flags = MEASUREMENT_FILTER_FLAG;
949 cmd.len = sizeof(spectrum);
950 spectrum.len = cpu_to_le16(cmd.len - sizeof(spectrum.len));
951
952 if (iwl_is_associated(priv))
953 spectrum.start_time =
954 iwl4965_add_beacon_time(priv->last_beacon_time,
955 add_time,
956 le16_to_cpu(priv->rxon_timing.beacon_interval));
957 else
958 spectrum.start_time = 0;
959
960 spectrum.channels[0].duration = cpu_to_le32(duration * TIME_UNIT);
961 spectrum.channels[0].channel = params->channel;
962 spectrum.channels[0].type = type;
963 if (priv->active_rxon.flags & RXON_FLG_BAND_24G_MSK)
964 spectrum.flags |= RXON_FLG_BAND_24G_MSK |
965 RXON_FLG_AUTO_DETECT_MSK | RXON_FLG_TGG_PROTECT_MSK;
966
967 rc = iwl_send_cmd_sync(priv, &cmd);
968 if (rc)
969 return rc;
970
971 res = (struct iwl_rx_packet *)cmd.meta.u.skb->data;
972 if (res->hdr.flags & IWL_CMD_FAILED_MSK) {
973 IWL_ERROR("Bad return from REPLY_RX_ON_ASSOC command\n");
974 rc = -EIO;
975 }
976
977 spectrum_resp_status = le16_to_cpu(res->u.spectrum.status);
978 switch (spectrum_resp_status) {
979 case 0: /* Command will be handled */
980 if (res->u.spectrum.id != 0xff) {
981 IWL_DEBUG_INFO
982 ("Replaced existing measurement: %d\n",
983 res->u.spectrum.id);
984 priv->measurement_status &= ~MEASUREMENT_READY;
985 }
986 priv->measurement_status |= MEASUREMENT_ACTIVE;
987 rc = 0;
988 break;
989
990 case 1: /* Command will not be handled */
991 rc = -EAGAIN;
992 break;
993 }
994
995 dev_kfree_skb_any(cmd.meta.u.skb);
996
997 return rc;
998 }
999 #endif
1000
1001 /******************************************************************************
1002 *
1003 * Generic RX handler implementations
1004 *
1005 ******************************************************************************/
1006 static void iwl_rx_reply_alive(struct iwl_priv *priv,
1007 struct iwl_rx_mem_buffer *rxb)
1008 {
1009 struct iwl_rx_packet *pkt = (struct iwl_rx_packet *)rxb->skb->data;
1010 struct iwl_alive_resp *palive;
1011 struct delayed_work *pwork;
1012
1013 palive = &pkt->u.alive_frame;
1014
1015 IWL_DEBUG_INFO("Alive ucode status 0x%08X revision "
1016 "0x%01X 0x%01X\n",
1017 palive->is_valid, palive->ver_type,
1018 palive->ver_subtype);
1019
1020 if (palive->ver_subtype == INITIALIZE_SUBTYPE) {
1021 IWL_DEBUG_INFO("Initialization Alive received.\n");
1022 memcpy(&priv->card_alive_init,
1023 &pkt->u.alive_frame,
1024 sizeof(struct iwl_init_alive_resp));
1025 pwork = &priv->init_alive_start;
1026 } else {
1027 IWL_DEBUG_INFO("Runtime Alive received.\n");
1028 memcpy(&priv->card_alive, &pkt->u.alive_frame,
1029 sizeof(struct iwl_alive_resp));
1030 pwork = &priv->alive_start;
1031 }
1032
1033 /* We delay the ALIVE response by 5ms to
1034 * give the HW RF Kill time to activate... */
1035 if (palive->is_valid == UCODE_VALID_OK)
1036 queue_delayed_work(priv->workqueue, pwork,
1037 msecs_to_jiffies(5));
1038 else
1039 IWL_WARNING("uCode did not respond OK.\n");
1040 }
1041
1042 static void iwl4965_rx_reply_error(struct iwl_priv *priv,
1043 struct iwl_rx_mem_buffer *rxb)
1044 {
1045 struct iwl_rx_packet *pkt = (struct iwl_rx_packet *)rxb->skb->data;
1046
1047 IWL_ERROR("Error Reply type 0x%08X cmd %s (0x%02X) "
1048 "seq 0x%04X ser 0x%08X\n",
1049 le32_to_cpu(pkt->u.err_resp.error_type),
1050 get_cmd_string(pkt->u.err_resp.cmd_id),
1051 pkt->u.err_resp.cmd_id,
1052 le16_to_cpu(pkt->u.err_resp.bad_cmd_seq_num),
1053 le32_to_cpu(pkt->u.err_resp.error_info));
1054 }
1055
1056 #define TX_STATUS_ENTRY(x) case TX_STATUS_FAIL_ ## x: return #x
1057
1058 static void iwl4965_rx_csa(struct iwl_priv *priv, struct iwl_rx_mem_buffer *rxb)
1059 {
1060 struct iwl_rx_packet *pkt = (struct iwl_rx_packet *)rxb->skb->data;
1061 struct iwl_rxon_cmd *rxon = (void *)&priv->active_rxon;
1062 struct iwl4965_csa_notification *csa = &(pkt->u.csa_notif);
1063 IWL_DEBUG_11H("CSA notif: channel %d, status %d\n",
1064 le16_to_cpu(csa->channel), le32_to_cpu(csa->status));
1065 rxon->channel = csa->channel;
1066 priv->staging_rxon.channel = csa->channel;
1067 }
1068
1069 static void iwl4965_rx_spectrum_measure_notif(struct iwl_priv *priv,
1070 struct iwl_rx_mem_buffer *rxb)
1071 {
1072 #ifdef CONFIG_IWL4965_SPECTRUM_MEASUREMENT
1073 struct iwl_rx_packet *pkt = (struct iwl_rx_packet *)rxb->skb->data;
1074 struct iwl4965_spectrum_notification *report = &(pkt->u.spectrum_notif);
1075
1076 if (!report->state) {
1077 IWL_DEBUG(IWL_DL_11H,
1078 "Spectrum Measure Notification: Start\n");
1079 return;
1080 }
1081
1082 memcpy(&priv->measure_report, report, sizeof(*report));
1083 priv->measurement_status |= MEASUREMENT_READY;
1084 #endif
1085 }
1086
1087 static void iwl4965_rx_pm_sleep_notif(struct iwl_priv *priv,
1088 struct iwl_rx_mem_buffer *rxb)
1089 {
1090 #ifdef CONFIG_IWLWIFI_DEBUG
1091 struct iwl_rx_packet *pkt = (struct iwl_rx_packet *)rxb->skb->data;
1092 struct iwl4965_sleep_notification *sleep = &(pkt->u.sleep_notif);
1093 IWL_DEBUG_RX("sleep mode: %d, src: %d\n",
1094 sleep->pm_sleep_mode, sleep->pm_wakeup_src);
1095 #endif
1096 }
1097
1098 static void iwl4965_rx_pm_debug_statistics_notif(struct iwl_priv *priv,
1099 struct iwl_rx_mem_buffer *rxb)
1100 {
1101 struct iwl_rx_packet *pkt = (struct iwl_rx_packet *)rxb->skb->data;
1102 IWL_DEBUG_RADIO("Dumping %d bytes of unhandled "
1103 "notification for %s:\n",
1104 le32_to_cpu(pkt->len), get_cmd_string(pkt->hdr.cmd));
1105 iwl_print_hex_dump(priv, IWL_DL_RADIO, pkt->u.raw, le32_to_cpu(pkt->len));
1106 }
1107
1108 static void iwl4965_bg_beacon_update(struct work_struct *work)
1109 {
1110 struct iwl_priv *priv =
1111 container_of(work, struct iwl_priv, beacon_update);
1112 struct sk_buff *beacon;
1113
1114 /* Pull updated AP beacon from mac80211. will fail if not in AP mode */
1115 beacon = ieee80211_beacon_get(priv->hw, priv->vif);
1116
1117 if (!beacon) {
1118 IWL_ERROR("update beacon failed\n");
1119 return;
1120 }
1121
1122 mutex_lock(&priv->mutex);
1123 /* new beacon skb is allocated every time; dispose previous.*/
1124 if (priv->ibss_beacon)
1125 dev_kfree_skb(priv->ibss_beacon);
1126
1127 priv->ibss_beacon = beacon;
1128 mutex_unlock(&priv->mutex);
1129
1130 iwl4965_send_beacon_cmd(priv);
1131 }
1132
1133 /**
1134 * iwl4965_bg_statistics_periodic - Timer callback to queue statistics
1135 *
1136 * This callback is provided in order to send a statistics request.
1137 *
1138 * This timer function is continually reset to execute within
1139 * REG_RECALIB_PERIOD seconds since the last STATISTICS_NOTIFICATION
1140 * was received. We need to ensure we receive the statistics in order
1141 * to update the temperature used for calibrating the TXPOWER.
1142 */
1143 static void iwl4965_bg_statistics_periodic(unsigned long data)
1144 {
1145 struct iwl_priv *priv = (struct iwl_priv *)data;
1146
1147 if (test_bit(STATUS_EXIT_PENDING, &priv->status))
1148 return;
1149
1150 iwl_send_statistics_request(priv, CMD_ASYNC);
1151 }
1152
1153 static void iwl4965_rx_beacon_notif(struct iwl_priv *priv,
1154 struct iwl_rx_mem_buffer *rxb)
1155 {
1156 #ifdef CONFIG_IWLWIFI_DEBUG
1157 struct iwl_rx_packet *pkt = (struct iwl_rx_packet *)rxb->skb->data;
1158 struct iwl4965_beacon_notif *beacon = &(pkt->u.beacon_status);
1159 u8 rate = iwl_hw_get_rate(beacon->beacon_notify_hdr.rate_n_flags);
1160
1161 IWL_DEBUG_RX("beacon status %x retries %d iss %d "
1162 "tsf %d %d rate %d\n",
1163 le32_to_cpu(beacon->beacon_notify_hdr.u.status) & TX_STATUS_MSK,
1164 beacon->beacon_notify_hdr.failure_frame,
1165 le32_to_cpu(beacon->ibss_mgr_status),
1166 le32_to_cpu(beacon->high_tsf),
1167 le32_to_cpu(beacon->low_tsf), rate);
1168 #endif
1169
1170 if ((priv->iw_mode == IEEE80211_IF_TYPE_AP) &&
1171 (!test_bit(STATUS_EXIT_PENDING, &priv->status)))
1172 queue_work(priv->workqueue, &priv->beacon_update);
1173 }
1174
1175 /* Handle notification from uCode that card's power state is changing
1176 * due to software, hardware, or critical temperature RFKILL */
1177 static void iwl4965_rx_card_state_notif(struct iwl_priv *priv,
1178 struct iwl_rx_mem_buffer *rxb)
1179 {
1180 struct iwl_rx_packet *pkt = (struct iwl_rx_packet *)rxb->skb->data;
1181 u32 flags = le32_to_cpu(pkt->u.card_state_notif.flags);
1182 unsigned long status = priv->status;
1183
1184 IWL_DEBUG_RF_KILL("Card state received: HW:%s SW:%s\n",
1185 (flags & HW_CARD_DISABLED) ? "Kill" : "On",
1186 (flags & SW_CARD_DISABLED) ? "Kill" : "On");
1187
1188 if (flags & (SW_CARD_DISABLED | HW_CARD_DISABLED |
1189 RF_CARD_DISABLED)) {
1190
1191 iwl_write32(priv, CSR_UCODE_DRV_GP1_SET,
1192 CSR_UCODE_DRV_GP1_BIT_CMD_BLOCKED);
1193
1194 if (!iwl_grab_nic_access(priv)) {
1195 iwl_write_direct32(
1196 priv, HBUS_TARG_MBX_C,
1197 HBUS_TARG_MBX_C_REG_BIT_CMD_BLOCKED);
1198
1199 iwl_release_nic_access(priv);
1200 }
1201
1202 if (!(flags & RXON_CARD_DISABLED)) {
1203 iwl_write32(priv, CSR_UCODE_DRV_GP1_CLR,
1204 CSR_UCODE_DRV_GP1_BIT_CMD_BLOCKED);
1205 if (!iwl_grab_nic_access(priv)) {
1206 iwl_write_direct32(
1207 priv, HBUS_TARG_MBX_C,
1208 HBUS_TARG_MBX_C_REG_BIT_CMD_BLOCKED);
1209
1210 iwl_release_nic_access(priv);
1211 }
1212 }
1213
1214 if (flags & RF_CARD_DISABLED) {
1215 iwl_write32(priv, CSR_UCODE_DRV_GP1_SET,
1216 CSR_UCODE_DRV_GP1_REG_BIT_CT_KILL_EXIT);
1217 iwl_read32(priv, CSR_UCODE_DRV_GP1);
1218 if (!iwl_grab_nic_access(priv))
1219 iwl_release_nic_access(priv);
1220 }
1221 }
1222
1223 if (flags & HW_CARD_DISABLED)
1224 set_bit(STATUS_RF_KILL_HW, &priv->status);
1225 else
1226 clear_bit(STATUS_RF_KILL_HW, &priv->status);
1227
1228
1229 if (flags & SW_CARD_DISABLED)
1230 set_bit(STATUS_RF_KILL_SW, &priv->status);
1231 else
1232 clear_bit(STATUS_RF_KILL_SW, &priv->status);
1233
1234 if (!(flags & RXON_CARD_DISABLED))
1235 iwl_scan_cancel(priv);
1236
1237 if ((test_bit(STATUS_RF_KILL_HW, &status) !=
1238 test_bit(STATUS_RF_KILL_HW, &priv->status)) ||
1239 (test_bit(STATUS_RF_KILL_SW, &status) !=
1240 test_bit(STATUS_RF_KILL_SW, &priv->status)))
1241 queue_work(priv->workqueue, &priv->rf_kill);
1242 else
1243 wake_up_interruptible(&priv->wait_command_queue);
1244 }
1245
1246 /**
1247 * iwl4965_setup_rx_handlers - Initialize Rx handler callbacks
1248 *
1249 * Setup the RX handlers for each of the reply types sent from the uCode
1250 * to the host.
1251 *
1252 * This function chains into the hardware specific files for them to setup
1253 * any hardware specific handlers as well.
1254 */
1255 static void iwl_setup_rx_handlers(struct iwl_priv *priv)
1256 {
1257 priv->rx_handlers[REPLY_ALIVE] = iwl_rx_reply_alive;
1258 priv->rx_handlers[REPLY_ERROR] = iwl4965_rx_reply_error;
1259 priv->rx_handlers[CHANNEL_SWITCH_NOTIFICATION] = iwl4965_rx_csa;
1260 priv->rx_handlers[SPECTRUM_MEASURE_NOTIFICATION] =
1261 iwl4965_rx_spectrum_measure_notif;
1262 priv->rx_handlers[PM_SLEEP_NOTIFICATION] = iwl4965_rx_pm_sleep_notif;
1263 priv->rx_handlers[PM_DEBUG_STATISTIC_NOTIFIC] =
1264 iwl4965_rx_pm_debug_statistics_notif;
1265 priv->rx_handlers[BEACON_NOTIFICATION] = iwl4965_rx_beacon_notif;
1266
1267 /*
1268 * The same handler is used for both the REPLY to a discrete
1269 * statistics request from the host as well as for the periodic
1270 * statistics notifications (after received beacons) from the uCode.
1271 */
1272 priv->rx_handlers[REPLY_STATISTICS_CMD] = iwl_rx_statistics;
1273 priv->rx_handlers[STATISTICS_NOTIFICATION] = iwl_rx_statistics;
1274
1275 iwl_setup_rx_scan_handlers(priv);
1276
1277 /* status change handler */
1278 priv->rx_handlers[CARD_STATE_NOTIFICATION] = iwl4965_rx_card_state_notif;
1279
1280 priv->rx_handlers[MISSED_BEACONS_NOTIFICATION] =
1281 iwl_rx_missed_beacon_notif;
1282 /* Rx handlers */
1283 priv->rx_handlers[REPLY_RX_PHY_CMD] = iwl_rx_reply_rx_phy;
1284 priv->rx_handlers[REPLY_RX_MPDU_CMD] = iwl_rx_reply_rx;
1285 /* block ack */
1286 priv->rx_handlers[REPLY_COMPRESSED_BA] = iwl_rx_reply_compressed_ba;
1287 /* Set up hardware specific Rx handlers */
1288 priv->cfg->ops->lib->rx_handler_setup(priv);
1289 }
1290
1291 /*
1292 * this should be called while priv->lock is locked
1293 */
1294 static void __iwl_rx_replenish(struct iwl_priv *priv)
1295 {
1296 iwl_rx_allocate(priv);
1297 iwl_rx_queue_restock(priv);
1298 }
1299
1300
1301 /**
1302 * iwl_rx_handle - Main entry function for receiving responses from uCode
1303 *
1304 * Uses the priv->rx_handlers callback function array to invoke
1305 * the appropriate handlers, including command responses,
1306 * frame-received notifications, and other notifications.
1307 */
1308 void iwl_rx_handle(struct iwl_priv *priv)
1309 {
1310 struct iwl_rx_mem_buffer *rxb;
1311 struct iwl_rx_packet *pkt;
1312 struct iwl_rx_queue *rxq = &priv->rxq;
1313 u32 r, i;
1314 int reclaim;
1315 unsigned long flags;
1316 u8 fill_rx = 0;
1317 u32 count = 8;
1318
1319 /* uCode's read index (stored in shared DRAM) indicates the last Rx
1320 * buffer that the driver may process (last buffer filled by ucode). */
1321 r = priv->cfg->ops->lib->shared_mem_rx_idx(priv);
1322 i = rxq->read;
1323
1324 /* Rx interrupt, but nothing sent from uCode */
1325 if (i == r)
1326 IWL_DEBUG(IWL_DL_RX, "r = %d, i = %d\n", r, i);
1327
1328 if (iwl_rx_queue_space(rxq) > (RX_QUEUE_SIZE / 2))
1329 fill_rx = 1;
1330
1331 while (i != r) {
1332 rxb = rxq->queue[i];
1333
1334 /* If an RXB doesn't have a Rx queue slot associated with it,
1335 * then a bug has been introduced in the queue refilling
1336 * routines -- catch it here */
1337 BUG_ON(rxb == NULL);
1338
1339 rxq->queue[i] = NULL;
1340
1341 pci_dma_sync_single_for_cpu(priv->pci_dev, rxb->dma_addr,
1342 priv->hw_params.rx_buf_size,
1343 PCI_DMA_FROMDEVICE);
1344 pkt = (struct iwl_rx_packet *)rxb->skb->data;
1345
1346 /* Reclaim a command buffer only if this packet is a response
1347 * to a (driver-originated) command.
1348 * If the packet (e.g. Rx frame) originated from uCode,
1349 * there is no command buffer to reclaim.
1350 * Ucode should set SEQ_RX_FRAME bit if ucode-originated,
1351 * but apparently a few don't get set; catch them here. */
1352 reclaim = !(pkt->hdr.sequence & SEQ_RX_FRAME) &&
1353 (pkt->hdr.cmd != REPLY_RX_PHY_CMD) &&
1354 (pkt->hdr.cmd != REPLY_RX) &&
1355 (pkt->hdr.cmd != REPLY_COMPRESSED_BA) &&
1356 (pkt->hdr.cmd != STATISTICS_NOTIFICATION) &&
1357 (pkt->hdr.cmd != REPLY_TX);
1358
1359 /* Based on type of command response or notification,
1360 * handle those that need handling via function in
1361 * rx_handlers table. See iwl4965_setup_rx_handlers() */
1362 if (priv->rx_handlers[pkt->hdr.cmd]) {
1363 IWL_DEBUG(IWL_DL_RX, "r = %d, i = %d, %s, 0x%02x\n", r,
1364 i, get_cmd_string(pkt->hdr.cmd), pkt->hdr.cmd);
1365 priv->rx_handlers[pkt->hdr.cmd] (priv, rxb);
1366 } else {
1367 /* No handling needed */
1368 IWL_DEBUG(IWL_DL_RX,
1369 "r %d i %d No handler needed for %s, 0x%02x\n",
1370 r, i, get_cmd_string(pkt->hdr.cmd),
1371 pkt->hdr.cmd);
1372 }
1373
1374 if (reclaim) {
1375 /* Invoke any callbacks, transfer the skb to caller, and
1376 * fire off the (possibly) blocking iwl_send_cmd()
1377 * as we reclaim the driver command queue */
1378 if (rxb && rxb->skb)
1379 iwl_tx_cmd_complete(priv, rxb);
1380 else
1381 IWL_WARNING("Claim null rxb?\n");
1382 }
1383
1384 /* For now we just don't re-use anything. We can tweak this
1385 * later to try and re-use notification packets and SKBs that
1386 * fail to Rx correctly */
1387 if (rxb->skb != NULL) {
1388 priv->alloc_rxb_skb--;
1389 dev_kfree_skb_any(rxb->skb);
1390 rxb->skb = NULL;
1391 }
1392
1393 pci_unmap_single(priv->pci_dev, rxb->dma_addr,
1394 priv->hw_params.rx_buf_size,
1395 PCI_DMA_FROMDEVICE);
1396 spin_lock_irqsave(&rxq->lock, flags);
1397 list_add_tail(&rxb->list, &priv->rxq.rx_used);
1398 spin_unlock_irqrestore(&rxq->lock, flags);
1399 i = (i + 1) & RX_QUEUE_MASK;
1400 /* If there are a lot of unused frames,
1401 * restock the Rx queue so ucode wont assert. */
1402 if (fill_rx) {
1403 count++;
1404 if (count >= 8) {
1405 priv->rxq.read = i;
1406 __iwl_rx_replenish(priv);
1407 count = 0;
1408 }
1409 }
1410 }
1411
1412 /* Backtrack one entry */
1413 priv->rxq.read = i;
1414 iwl_rx_queue_restock(priv);
1415 }
1416
1417 #ifdef CONFIG_IWLWIFI_DEBUG
1418 static void iwl4965_print_rx_config_cmd(struct iwl_priv *priv)
1419 {
1420 struct iwl_rxon_cmd *rxon = &priv->staging_rxon;
1421 DECLARE_MAC_BUF(mac);
1422
1423 IWL_DEBUG_RADIO("RX CONFIG:\n");
1424 iwl_print_hex_dump(priv, IWL_DL_RADIO, (u8 *) rxon, sizeof(*rxon));
1425 IWL_DEBUG_RADIO("u16 channel: 0x%x\n", le16_to_cpu(rxon->channel));
1426 IWL_DEBUG_RADIO("u32 flags: 0x%08X\n", le32_to_cpu(rxon->flags));
1427 IWL_DEBUG_RADIO("u32 filter_flags: 0x%08x\n",
1428 le32_to_cpu(rxon->filter_flags));
1429 IWL_DEBUG_RADIO("u8 dev_type: 0x%x\n", rxon->dev_type);
1430 IWL_DEBUG_RADIO("u8 ofdm_basic_rates: 0x%02x\n",
1431 rxon->ofdm_basic_rates);
1432 IWL_DEBUG_RADIO("u8 cck_basic_rates: 0x%02x\n", rxon->cck_basic_rates);
1433 IWL_DEBUG_RADIO("u8[6] node_addr: %s\n",
1434 print_mac(mac, rxon->node_addr));
1435 IWL_DEBUG_RADIO("u8[6] bssid_addr: %s\n",
1436 print_mac(mac, rxon->bssid_addr));
1437 IWL_DEBUG_RADIO("u16 assoc_id: 0x%x\n", le16_to_cpu(rxon->assoc_id));
1438 }
1439 #endif
1440
1441 static void iwl4965_enable_interrupts(struct iwl_priv *priv)
1442 {
1443 IWL_DEBUG_ISR("Enabling interrupts\n");
1444 set_bit(STATUS_INT_ENABLED, &priv->status);
1445 iwl_write32(priv, CSR_INT_MASK, CSR_INI_SET_MASK);
1446 }
1447
1448 /* call this function to flush any scheduled tasklet */
1449 static inline void iwl_synchronize_irq(struct iwl_priv *priv)
1450 {
1451 /* wait to make sure we flush pedding tasklet*/
1452 synchronize_irq(priv->pci_dev->irq);
1453 tasklet_kill(&priv->irq_tasklet);
1454 }
1455
1456 static inline void iwl4965_disable_interrupts(struct iwl_priv *priv)
1457 {
1458 clear_bit(STATUS_INT_ENABLED, &priv->status);
1459
1460 /* disable interrupts from uCode/NIC to host */
1461 iwl_write32(priv, CSR_INT_MASK, 0x00000000);
1462
1463 /* acknowledge/clear/reset any interrupts still pending
1464 * from uCode or flow handler (Rx/Tx DMA) */
1465 iwl_write32(priv, CSR_INT, 0xffffffff);
1466 iwl_write32(priv, CSR_FH_INT_STATUS, 0xffffffff);
1467 IWL_DEBUG_ISR("Disabled interrupts\n");
1468 }
1469
1470
1471 /**
1472 * iwl4965_irq_handle_error - called for HW or SW error interrupt from card
1473 */
1474 static void iwl4965_irq_handle_error(struct iwl_priv *priv)
1475 {
1476 /* Set the FW error flag -- cleared on iwl4965_down */
1477 set_bit(STATUS_FW_ERROR, &priv->status);
1478
1479 /* Cancel currently queued command. */
1480 clear_bit(STATUS_HCMD_ACTIVE, &priv->status);
1481
1482 #ifdef CONFIG_IWLWIFI_DEBUG
1483 if (priv->debug_level & IWL_DL_FW_ERRORS) {
1484 iwl_dump_nic_error_log(priv);
1485 iwl_dump_nic_event_log(priv);
1486 iwl4965_print_rx_config_cmd(priv);
1487 }
1488 #endif
1489
1490 wake_up_interruptible(&priv->wait_command_queue);
1491
1492 /* Keep the restart process from trying to send host
1493 * commands by clearing the INIT status bit */
1494 clear_bit(STATUS_READY, &priv->status);
1495
1496 if (!test_bit(STATUS_EXIT_PENDING, &priv->status)) {
1497 IWL_DEBUG(IWL_DL_FW_ERRORS,
1498 "Restarting adapter due to uCode error.\n");
1499
1500 if (iwl_is_associated(priv)) {
1501 memcpy(&priv->recovery_rxon, &priv->active_rxon,
1502 sizeof(priv->recovery_rxon));
1503 priv->error_recovering = 1;
1504 }
1505 if (priv->cfg->mod_params->restart_fw)
1506 queue_work(priv->workqueue, &priv->restart);
1507 }
1508 }
1509
1510 static void iwl4965_error_recovery(struct iwl_priv *priv)
1511 {
1512 unsigned long flags;
1513
1514 memcpy(&priv->staging_rxon, &priv->recovery_rxon,
1515 sizeof(priv->staging_rxon));
1516 priv->staging_rxon.filter_flags &= ~RXON_FILTER_ASSOC_MSK;
1517 iwl4965_commit_rxon(priv);
1518
1519 iwl_rxon_add_station(priv, priv->bssid, 1);
1520
1521 spin_lock_irqsave(&priv->lock, flags);
1522 priv->assoc_id = le16_to_cpu(priv->staging_rxon.assoc_id);
1523 priv->error_recovering = 0;
1524 spin_unlock_irqrestore(&priv->lock, flags);
1525 }
1526
1527 static void iwl4965_irq_tasklet(struct iwl_priv *priv)
1528 {
1529 u32 inta, handled = 0;
1530 u32 inta_fh;
1531 unsigned long flags;
1532 #ifdef CONFIG_IWLWIFI_DEBUG
1533 u32 inta_mask;
1534 #endif
1535
1536 spin_lock_irqsave(&priv->lock, flags);
1537
1538 /* Ack/clear/reset pending uCode interrupts.
1539 * Note: Some bits in CSR_INT are "OR" of bits in CSR_FH_INT_STATUS,
1540 * and will clear only when CSR_FH_INT_STATUS gets cleared. */
1541 inta = iwl_read32(priv, CSR_INT);
1542 iwl_write32(priv, CSR_INT, inta);
1543
1544 /* Ack/clear/reset pending flow-handler (DMA) interrupts.
1545 * Any new interrupts that happen after this, either while we're
1546 * in this tasklet, or later, will show up in next ISR/tasklet. */
1547 inta_fh = iwl_read32(priv, CSR_FH_INT_STATUS);
1548 iwl_write32(priv, CSR_FH_INT_STATUS, inta_fh);
1549
1550 #ifdef CONFIG_IWLWIFI_DEBUG
1551 if (priv->debug_level & IWL_DL_ISR) {
1552 /* just for debug */
1553 inta_mask = iwl_read32(priv, CSR_INT_MASK);
1554 IWL_DEBUG_ISR("inta 0x%08x, enabled 0x%08x, fh 0x%08x\n",
1555 inta, inta_mask, inta_fh);
1556 }
1557 #endif
1558
1559 /* Since CSR_INT and CSR_FH_INT_STATUS reads and clears are not
1560 * atomic, make sure that inta covers all the interrupts that
1561 * we've discovered, even if FH interrupt came in just after
1562 * reading CSR_INT. */
1563 if (inta_fh & CSR49_FH_INT_RX_MASK)
1564 inta |= CSR_INT_BIT_FH_RX;
1565 if (inta_fh & CSR49_FH_INT_TX_MASK)
1566 inta |= CSR_INT_BIT_FH_TX;
1567
1568 /* Now service all interrupt bits discovered above. */
1569 if (inta & CSR_INT_BIT_HW_ERR) {
1570 IWL_ERROR("Microcode HW error detected. Restarting.\n");
1571
1572 /* Tell the device to stop sending interrupts */
1573 iwl4965_disable_interrupts(priv);
1574
1575 iwl4965_irq_handle_error(priv);
1576
1577 handled |= CSR_INT_BIT_HW_ERR;
1578
1579 spin_unlock_irqrestore(&priv->lock, flags);
1580
1581 return;
1582 }
1583
1584 #ifdef CONFIG_IWLWIFI_DEBUG
1585 if (priv->debug_level & (IWL_DL_ISR)) {
1586 /* NIC fires this, but we don't use it, redundant with WAKEUP */
1587 if (inta & CSR_INT_BIT_SCD)
1588 IWL_DEBUG_ISR("Scheduler finished to transmit "
1589 "the frame/frames.\n");
1590
1591 /* Alive notification via Rx interrupt will do the real work */
1592 if (inta & CSR_INT_BIT_ALIVE)
1593 IWL_DEBUG_ISR("Alive interrupt\n");
1594 }
1595 #endif
1596 /* Safely ignore these bits for debug checks below */
1597 inta &= ~(CSR_INT_BIT_SCD | CSR_INT_BIT_ALIVE);
1598
1599 /* HW RF KILL switch toggled */
1600 if (inta & CSR_INT_BIT_RF_KILL) {
1601 int hw_rf_kill = 0;
1602 if (!(iwl_read32(priv, CSR_GP_CNTRL) &
1603 CSR_GP_CNTRL_REG_FLAG_HW_RF_KILL_SW))
1604 hw_rf_kill = 1;
1605
1606 IWL_DEBUG(IWL_DL_RF_KILL, "RF_KILL bit toggled to %s.\n",
1607 hw_rf_kill ? "disable radio":"enable radio");
1608
1609 /* driver only loads ucode once setting the interface up.
1610 * the driver as well won't allow loading if RFKILL is set
1611 * therefore no need to restart the driver from this handler
1612 */
1613 if (!hw_rf_kill && !test_bit(STATUS_ALIVE, &priv->status))
1614 clear_bit(STATUS_RF_KILL_HW, &priv->status);
1615
1616 handled |= CSR_INT_BIT_RF_KILL;
1617 }
1618
1619 /* Chip got too hot and stopped itself */
1620 if (inta & CSR_INT_BIT_CT_KILL) {
1621 IWL_ERROR("Microcode CT kill error detected.\n");
1622 handled |= CSR_INT_BIT_CT_KILL;
1623 }
1624
1625 /* Error detected by uCode */
1626 if (inta & CSR_INT_BIT_SW_ERR) {
1627 IWL_ERROR("Microcode SW error detected. Restarting 0x%X.\n",
1628 inta);
1629 iwl4965_irq_handle_error(priv);
1630 handled |= CSR_INT_BIT_SW_ERR;
1631 }
1632
1633 /* uCode wakes up after power-down sleep */
1634 if (inta & CSR_INT_BIT_WAKEUP) {
1635 IWL_DEBUG_ISR("Wakeup interrupt\n");
1636 iwl_rx_queue_update_write_ptr(priv, &priv->rxq);
1637 iwl_txq_update_write_ptr(priv, &priv->txq[0]);
1638 iwl_txq_update_write_ptr(priv, &priv->txq[1]);
1639 iwl_txq_update_write_ptr(priv, &priv->txq[2]);
1640 iwl_txq_update_write_ptr(priv, &priv->txq[3]);
1641 iwl_txq_update_write_ptr(priv, &priv->txq[4]);
1642 iwl_txq_update_write_ptr(priv, &priv->txq[5]);
1643
1644 handled |= CSR_INT_BIT_WAKEUP;
1645 }
1646
1647 /* All uCode command responses, including Tx command responses,
1648 * Rx "responses" (frame-received notification), and other
1649 * notifications from uCode come through here*/
1650 if (inta & (CSR_INT_BIT_FH_RX | CSR_INT_BIT_SW_RX)) {
1651 iwl_rx_handle(priv);
1652 handled |= (CSR_INT_BIT_FH_RX | CSR_INT_BIT_SW_RX);
1653 }
1654
1655 if (inta & CSR_INT_BIT_FH_TX) {
1656 IWL_DEBUG_ISR("Tx interrupt\n");
1657 handled |= CSR_INT_BIT_FH_TX;
1658 /* FH finished to write, send event */
1659 priv->ucode_write_complete = 1;
1660 wake_up_interruptible(&priv->wait_command_queue);
1661 }
1662
1663 if (inta & ~handled)
1664 IWL_ERROR("Unhandled INTA bits 0x%08x\n", inta & ~handled);
1665
1666 if (inta & ~CSR_INI_SET_MASK) {
1667 IWL_WARNING("Disabled INTA bits 0x%08x were pending\n",
1668 inta & ~CSR_INI_SET_MASK);
1669 IWL_WARNING(" with FH_INT = 0x%08x\n", inta_fh);
1670 }
1671
1672 /* Re-enable all interrupts */
1673 /* only Re-enable if diabled by irq */
1674 if (test_bit(STATUS_INT_ENABLED, &priv->status))
1675 iwl4965_enable_interrupts(priv);
1676
1677 #ifdef CONFIG_IWLWIFI_DEBUG
1678 if (priv->debug_level & (IWL_DL_ISR)) {
1679 inta = iwl_read32(priv, CSR_INT);
1680 inta_mask = iwl_read32(priv, CSR_INT_MASK);
1681 inta_fh = iwl_read32(priv, CSR_FH_INT_STATUS);
1682 IWL_DEBUG_ISR("End inta 0x%08x, enabled 0x%08x, fh 0x%08x, "
1683 "flags 0x%08lx\n", inta, inta_mask, inta_fh, flags);
1684 }
1685 #endif
1686 spin_unlock_irqrestore(&priv->lock, flags);
1687 }
1688
1689 static irqreturn_t iwl4965_isr(int irq, void *data)
1690 {
1691 struct iwl_priv *priv = data;
1692 u32 inta, inta_mask;
1693 u32 inta_fh;
1694 if (!priv)
1695 return IRQ_NONE;
1696
1697 spin_lock(&priv->lock);
1698
1699 /* Disable (but don't clear!) interrupts here to avoid
1700 * back-to-back ISRs and sporadic interrupts from our NIC.
1701 * If we have something to service, the tasklet will re-enable ints.
1702 * If we *don't* have something, we'll re-enable before leaving here. */
1703 inta_mask = iwl_read32(priv, CSR_INT_MASK); /* just for debug */
1704 iwl_write32(priv, CSR_INT_MASK, 0x00000000);
1705
1706 /* Discover which interrupts are active/pending */
1707 inta = iwl_read32(priv, CSR_INT);
1708 inta_fh = iwl_read32(priv, CSR_FH_INT_STATUS);
1709
1710 /* Ignore interrupt if there's nothing in NIC to service.
1711 * This may be due to IRQ shared with another device,
1712 * or due to sporadic interrupts thrown from our NIC. */
1713 if (!inta && !inta_fh) {
1714 IWL_DEBUG_ISR("Ignore interrupt, inta == 0, inta_fh == 0\n");
1715 goto none;
1716 }
1717
1718 if ((inta == 0xFFFFFFFF) || ((inta & 0xFFFFFFF0) == 0xa5a5a5a0)) {
1719 /* Hardware disappeared. It might have already raised
1720 * an interrupt */
1721 IWL_WARNING("HARDWARE GONE?? INTA == 0x%080x\n", inta);
1722 goto unplugged;
1723 }
1724
1725 IWL_DEBUG_ISR("ISR inta 0x%08x, enabled 0x%08x, fh 0x%08x\n",
1726 inta, inta_mask, inta_fh);
1727
1728 inta &= ~CSR_INT_BIT_SCD;
1729
1730 /* iwl4965_irq_tasklet() will service interrupts and re-enable them */
1731 if (likely(inta || inta_fh))
1732 tasklet_schedule(&priv->irq_tasklet);
1733
1734 unplugged:
1735 spin_unlock(&priv->lock);
1736 return IRQ_HANDLED;
1737
1738 none:
1739 /* re-enable interrupts here since we don't have anything to service. */
1740 /* only Re-enable if diabled by irq */
1741 if (test_bit(STATUS_INT_ENABLED, &priv->status))
1742 iwl4965_enable_interrupts(priv);
1743 spin_unlock(&priv->lock);
1744 return IRQ_NONE;
1745 }
1746
1747 /******************************************************************************
1748 *
1749 * uCode download functions
1750 *
1751 ******************************************************************************/
1752
1753 static void iwl4965_dealloc_ucode_pci(struct iwl_priv *priv)
1754 {
1755 iwl_free_fw_desc(priv->pci_dev, &priv->ucode_code);
1756 iwl_free_fw_desc(priv->pci_dev, &priv->ucode_data);
1757 iwl_free_fw_desc(priv->pci_dev, &priv->ucode_data_backup);
1758 iwl_free_fw_desc(priv->pci_dev, &priv->ucode_init);
1759 iwl_free_fw_desc(priv->pci_dev, &priv->ucode_init_data);
1760 iwl_free_fw_desc(priv->pci_dev, &priv->ucode_boot);
1761 }
1762
1763 static void iwl4965_nic_start(struct iwl_priv *priv)
1764 {
1765 /* Remove all resets to allow NIC to operate */
1766 iwl_write32(priv, CSR_RESET, 0);
1767 }
1768
1769
1770 /**
1771 * iwl4965_read_ucode - Read uCode images from disk file.
1772 *
1773 * Copy into buffers for card to fetch via bus-mastering
1774 */
1775 static int iwl4965_read_ucode(struct iwl_priv *priv)
1776 {
1777 struct iwl_ucode *ucode;
1778 int ret;
1779 const struct firmware *ucode_raw;
1780 const char *name = priv->cfg->fw_name;
1781 u8 *src;
1782 size_t len;
1783 u32 ver, inst_size, data_size, init_size, init_data_size, boot_size;
1784
1785 /* Ask kernel firmware_class module to get the boot firmware off disk.
1786 * request_firmware() is synchronous, file is in memory on return. */
1787 ret = request_firmware(&ucode_raw, name, &priv->pci_dev->dev);
1788 if (ret < 0) {
1789 IWL_ERROR("%s firmware file req failed: Reason %d\n",
1790 name, ret);
1791 goto error;
1792 }
1793
1794 IWL_DEBUG_INFO("Got firmware '%s' file (%zd bytes) from disk\n",
1795 name, ucode_raw->size);
1796
1797 /* Make sure that we got at least our header! */
1798 if (ucode_raw->size < sizeof(*ucode)) {
1799 IWL_ERROR("File size way too small!\n");
1800 ret = -EINVAL;
1801 goto err_release;
1802 }
1803
1804 /* Data from ucode file: header followed by uCode images */
1805 ucode = (void *)ucode_raw->data;
1806
1807 ver = le32_to_cpu(ucode->ver);
1808 inst_size = le32_to_cpu(ucode->inst_size);
1809 data_size = le32_to_cpu(ucode->data_size);
1810 init_size = le32_to_cpu(ucode->init_size);
1811 init_data_size = le32_to_cpu(ucode->init_data_size);
1812 boot_size = le32_to_cpu(ucode->boot_size);
1813
1814 IWL_DEBUG_INFO("f/w package hdr ucode version = 0x%x\n", ver);
1815 IWL_DEBUG_INFO("f/w package hdr runtime inst size = %u\n",
1816 inst_size);
1817 IWL_DEBUG_INFO("f/w package hdr runtime data size = %u\n",
1818 data_size);
1819 IWL_DEBUG_INFO("f/w package hdr init inst size = %u\n",
1820 init_size);
1821 IWL_DEBUG_INFO("f/w package hdr init data size = %u\n",
1822 init_data_size);
1823 IWL_DEBUG_INFO("f/w package hdr boot inst size = %u\n",
1824 boot_size);
1825
1826 /* Verify size of file vs. image size info in file's header */
1827 if (ucode_raw->size < sizeof(*ucode) +
1828 inst_size + data_size + init_size +
1829 init_data_size + boot_size) {
1830
1831 IWL_DEBUG_INFO("uCode file size %d too small\n",
1832 (int)ucode_raw->size);
1833 ret = -EINVAL;
1834 goto err_release;
1835 }
1836
1837 /* Verify that uCode images will fit in card's SRAM */
1838 if (inst_size > priv->hw_params.max_inst_size) {
1839 IWL_DEBUG_INFO("uCode instr len %d too large to fit in\n",
1840 inst_size);
1841 ret = -EINVAL;
1842 goto err_release;
1843 }
1844
1845 if (data_size > priv->hw_params.max_data_size) {
1846 IWL_DEBUG_INFO("uCode data len %d too large to fit in\n",
1847 data_size);
1848 ret = -EINVAL;
1849 goto err_release;
1850 }
1851 if (init_size > priv->hw_params.max_inst_size) {
1852 IWL_DEBUG_INFO
1853 ("uCode init instr len %d too large to fit in\n",
1854 init_size);
1855 ret = -EINVAL;
1856 goto err_release;
1857 }
1858 if (init_data_size > priv->hw_params.max_data_size) {
1859 IWL_DEBUG_INFO
1860 ("uCode init data len %d too large to fit in\n",
1861 init_data_size);
1862 ret = -EINVAL;
1863 goto err_release;
1864 }
1865 if (boot_size > priv->hw_params.max_bsm_size) {
1866 IWL_DEBUG_INFO
1867 ("uCode boot instr len %d too large to fit in\n",
1868 boot_size);
1869 ret = -EINVAL;
1870 goto err_release;
1871 }
1872
1873 /* Allocate ucode buffers for card's bus-master loading ... */
1874
1875 /* Runtime instructions and 2 copies of data:
1876 * 1) unmodified from disk
1877 * 2) backup cache for save/restore during power-downs */
1878 priv->ucode_code.len = inst_size;
1879 iwl_alloc_fw_desc(priv->pci_dev, &priv->ucode_code);
1880
1881 priv->ucode_data.len = data_size;
1882 iwl_alloc_fw_desc(priv->pci_dev, &priv->ucode_data);
1883
1884 priv->ucode_data_backup.len = data_size;
1885 iwl_alloc_fw_desc(priv->pci_dev, &priv->ucode_data_backup);
1886
1887 /* Initialization instructions and data */
1888 if (init_size && init_data_size) {
1889 priv->ucode_init.len = init_size;
1890 iwl_alloc_fw_desc(priv->pci_dev, &priv->ucode_init);
1891
1892 priv->ucode_init_data.len = init_data_size;
1893 iwl_alloc_fw_desc(priv->pci_dev, &priv->ucode_init_data);
1894
1895 if (!priv->ucode_init.v_addr || !priv->ucode_init_data.v_addr)
1896 goto err_pci_alloc;
1897 }
1898
1899 /* Bootstrap (instructions only, no data) */
1900 if (boot_size) {
1901 priv->ucode_boot.len = boot_size;
1902 iwl_alloc_fw_desc(priv->pci_dev, &priv->ucode_boot);
1903
1904 if (!priv->ucode_boot.v_addr)
1905 goto err_pci_alloc;
1906 }
1907
1908 /* Copy images into buffers for card's bus-master reads ... */
1909
1910 /* Runtime instructions (first block of data in file) */
1911 src = &ucode->data[0];
1912 len = priv->ucode_code.len;
1913 IWL_DEBUG_INFO("Copying (but not loading) uCode instr len %Zd\n", len);
1914 memcpy(priv->ucode_code.v_addr, src, len);
1915 IWL_DEBUG_INFO("uCode instr buf vaddr = 0x%p, paddr = 0x%08x\n",
1916 priv->ucode_code.v_addr, (u32)priv->ucode_code.p_addr);
1917
1918 /* Runtime data (2nd block)
1919 * NOTE: Copy into backup buffer will be done in iwl4965_up() */
1920 src = &ucode->data[inst_size];
1921 len = priv->ucode_data.len;
1922 IWL_DEBUG_INFO("Copying (but not loading) uCode data len %Zd\n", len);
1923 memcpy(priv->ucode_data.v_addr, src, len);
1924 memcpy(priv->ucode_data_backup.v_addr, src, len);
1925
1926 /* Initialization instructions (3rd block) */
1927 if (init_size) {
1928 src = &ucode->data[inst_size + data_size];
1929 len = priv->ucode_init.len;
1930 IWL_DEBUG_INFO("Copying (but not loading) init instr len %Zd\n",
1931 len);
1932 memcpy(priv->ucode_init.v_addr, src, len);
1933 }
1934
1935 /* Initialization data (4th block) */
1936 if (init_data_size) {
1937 src = &ucode->data[inst_size + data_size + init_size];
1938 len = priv->ucode_init_data.len;
1939 IWL_DEBUG_INFO("Copying (but not loading) init data len %Zd\n",
1940 len);
1941 memcpy(priv->ucode_init_data.v_addr, src, len);
1942 }
1943
1944 /* Bootstrap instructions (5th block) */
1945 src = &ucode->data[inst_size + data_size + init_size + init_data_size];
1946 len = priv->ucode_boot.len;
1947 IWL_DEBUG_INFO("Copying (but not loading) boot instr len %Zd\n", len);
1948 memcpy(priv->ucode_boot.v_addr, src, len);
1949
1950 /* We have our copies now, allow OS release its copies */
1951 release_firmware(ucode_raw);
1952 return 0;
1953
1954 err_pci_alloc:
1955 IWL_ERROR("failed to allocate pci memory\n");
1956 ret = -ENOMEM;
1957 iwl4965_dealloc_ucode_pci(priv);
1958
1959 err_release:
1960 release_firmware(ucode_raw);
1961
1962 error:
1963 return ret;
1964 }
1965
1966 /**
1967 * iwl_alive_start - called after REPLY_ALIVE notification received
1968 * from protocol/runtime uCode (initialization uCode's
1969 * Alive gets handled by iwl_init_alive_start()).
1970 */
1971 static void iwl_alive_start(struct iwl_priv *priv)
1972 {
1973 int ret = 0;
1974
1975 IWL_DEBUG_INFO("Runtime Alive received.\n");
1976
1977 if (priv->card_alive.is_valid != UCODE_VALID_OK) {
1978 /* We had an error bringing up the hardware, so take it
1979 * all the way back down so we can try again */
1980 IWL_DEBUG_INFO("Alive failed.\n");
1981 goto restart;
1982 }
1983
1984 /* Initialize uCode has loaded Runtime uCode ... verify inst image.
1985 * This is a paranoid check, because we would not have gotten the
1986 * "runtime" alive if code weren't properly loaded. */
1987 if (iwl_verify_ucode(priv)) {
1988 /* Runtime instruction load was bad;
1989 * take it all the way back down so we can try again */
1990 IWL_DEBUG_INFO("Bad runtime uCode load.\n");
1991 goto restart;
1992 }
1993
1994 iwl_clear_stations_table(priv);
1995 ret = priv->cfg->ops->lib->alive_notify(priv);
1996 if (ret) {
1997 IWL_WARNING("Could not complete ALIVE transition [ntf]: %d\n",
1998 ret);
1999 goto restart;
2000 }
2001
2002 /* After the ALIVE response, we can send host commands to 4965 uCode */
2003 set_bit(STATUS_ALIVE, &priv->status);
2004
2005 if (iwl_is_rfkill(priv))
2006 return;
2007
2008 ieee80211_wake_queues(priv->hw);
2009
2010 priv->active_rate = priv->rates_mask;
2011 priv->active_rate_basic = priv->rates_mask & IWL_BASIC_RATES_MASK;
2012
2013 if (iwl_is_associated(priv)) {
2014 struct iwl_rxon_cmd *active_rxon =
2015 (struct iwl_rxon_cmd *)&priv->active_rxon;
2016
2017 memcpy(&priv->staging_rxon, &priv->active_rxon,
2018 sizeof(priv->staging_rxon));
2019 active_rxon->filter_flags &= ~RXON_FILTER_ASSOC_MSK;
2020 } else {
2021 /* Initialize our rx_config data */
2022 iwl4965_connection_init_rx_config(priv);
2023 memcpy(priv->staging_rxon.node_addr, priv->mac_addr, ETH_ALEN);
2024 }
2025
2026 /* Configure Bluetooth device coexistence support */
2027 iwl4965_send_bt_config(priv);
2028
2029 iwl_reset_run_time_calib(priv);
2030
2031 /* Configure the adapter for unassociated operation */
2032 iwl4965_commit_rxon(priv);
2033
2034 /* At this point, the NIC is initialized and operational */
2035 iwl_rf_kill_ct_config(priv);
2036
2037 iwl_leds_register(priv);
2038
2039 IWL_DEBUG_INFO("ALIVE processing complete.\n");
2040 set_bit(STATUS_READY, &priv->status);
2041 wake_up_interruptible(&priv->wait_command_queue);
2042
2043 if (priv->error_recovering)
2044 iwl4965_error_recovery(priv);
2045
2046 iwl_power_update_mode(priv, 1);
2047 ieee80211_notify_mac(priv->hw, IEEE80211_NOTIFY_RE_ASSOC);
2048
2049 if (test_and_clear_bit(STATUS_MODE_PENDING, &priv->status))
2050 iwl4965_set_mode(priv, priv->iw_mode);
2051
2052 return;
2053
2054 restart:
2055 queue_work(priv->workqueue, &priv->restart);
2056 }
2057
2058 static void iwl_cancel_deferred_work(struct iwl_priv *priv);
2059
2060 static void __iwl4965_down(struct iwl_priv *priv)
2061 {
2062 unsigned long flags;
2063 int exit_pending = test_bit(STATUS_EXIT_PENDING, &priv->status);
2064
2065 IWL_DEBUG_INFO(DRV_NAME " is going down\n");
2066
2067 if (!exit_pending)
2068 set_bit(STATUS_EXIT_PENDING, &priv->status);
2069
2070 iwl_leds_unregister(priv);
2071
2072 iwl_clear_stations_table(priv);
2073
2074 /* Unblock any waiting calls */
2075 wake_up_interruptible_all(&priv->wait_command_queue);
2076
2077 /* Wipe out the EXIT_PENDING status bit if we are not actually
2078 * exiting the module */
2079 if (!exit_pending)
2080 clear_bit(STATUS_EXIT_PENDING, &priv->status);
2081
2082 /* stop and reset the on-board processor */
2083 iwl_write32(priv, CSR_RESET, CSR_RESET_REG_FLAG_NEVO_RESET);
2084
2085 /* tell the device to stop sending interrupts */
2086 spin_lock_irqsave(&priv->lock, flags);
2087 iwl4965_disable_interrupts(priv);
2088 spin_unlock_irqrestore(&priv->lock, flags);
2089 iwl_synchronize_irq(priv);
2090
2091 if (priv->mac80211_registered)
2092 ieee80211_stop_queues(priv->hw);
2093
2094 /* If we have not previously called iwl4965_init() then
2095 * clear all bits but the RF Kill and SUSPEND bits and return */
2096 if (!iwl_is_init(priv)) {
2097 priv->status = test_bit(STATUS_RF_KILL_HW, &priv->status) <<
2098 STATUS_RF_KILL_HW |
2099 test_bit(STATUS_RF_KILL_SW, &priv->status) <<
2100 STATUS_RF_KILL_SW |
2101 test_bit(STATUS_GEO_CONFIGURED, &priv->status) <<
2102 STATUS_GEO_CONFIGURED |
2103 test_bit(STATUS_IN_SUSPEND, &priv->status) <<
2104 STATUS_IN_SUSPEND |
2105 test_bit(STATUS_EXIT_PENDING, &priv->status) <<
2106 STATUS_EXIT_PENDING;
2107 goto exit;
2108 }
2109
2110 /* ...otherwise clear out all the status bits but the RF Kill and
2111 * SUSPEND bits and continue taking the NIC down. */
2112 priv->status &= test_bit(STATUS_RF_KILL_HW, &priv->status) <<
2113 STATUS_RF_KILL_HW |
2114 test_bit(STATUS_RF_KILL_SW, &priv->status) <<
2115 STATUS_RF_KILL_SW |
2116 test_bit(STATUS_GEO_CONFIGURED, &priv->status) <<
2117 STATUS_GEO_CONFIGURED |
2118 test_bit(STATUS_IN_SUSPEND, &priv->status) <<
2119 STATUS_IN_SUSPEND |
2120 test_bit(STATUS_FW_ERROR, &priv->status) <<
2121 STATUS_FW_ERROR |
2122 test_bit(STATUS_EXIT_PENDING, &priv->status) <<
2123 STATUS_EXIT_PENDING;
2124
2125 spin_lock_irqsave(&priv->lock, flags);
2126 iwl_clear_bit(priv, CSR_GP_CNTRL,
2127 CSR_GP_CNTRL_REG_FLAG_MAC_ACCESS_REQ);
2128 spin_unlock_irqrestore(&priv->lock, flags);
2129
2130 iwl_txq_ctx_stop(priv);
2131 iwl_rxq_stop(priv);
2132
2133 spin_lock_irqsave(&priv->lock, flags);
2134 if (!iwl_grab_nic_access(priv)) {
2135 iwl_write_prph(priv, APMG_CLK_DIS_REG,
2136 APMG_CLK_VAL_DMA_CLK_RQT);
2137 iwl_release_nic_access(priv);
2138 }
2139 spin_unlock_irqrestore(&priv->lock, flags);
2140
2141 udelay(5);
2142
2143 /* FIXME: apm_ops.suspend(priv) */
2144 priv->cfg->ops->lib->apm_ops.reset(priv);
2145 priv->cfg->ops->lib->free_shared_mem(priv);
2146
2147 exit:
2148 memset(&priv->card_alive, 0, sizeof(struct iwl_alive_resp));
2149
2150 if (priv->ibss_beacon)
2151 dev_kfree_skb(priv->ibss_beacon);
2152 priv->ibss_beacon = NULL;
2153
2154 /* clear out any free frames */
2155 iwl_clear_free_frames(priv);
2156 }
2157
2158 static void iwl4965_down(struct iwl_priv *priv)
2159 {
2160 mutex_lock(&priv->mutex);
2161 __iwl4965_down(priv);
2162 mutex_unlock(&priv->mutex);
2163
2164 iwl_cancel_deferred_work(priv);
2165 }
2166
2167 #define MAX_HW_RESTARTS 5
2168
2169 static int __iwl4965_up(struct iwl_priv *priv)
2170 {
2171 int i;
2172 int ret;
2173
2174 if (test_bit(STATUS_EXIT_PENDING, &priv->status)) {
2175 IWL_WARNING("Exit pending; will not bring the NIC up\n");
2176 return -EIO;
2177 }
2178
2179 if (!priv->ucode_data_backup.v_addr || !priv->ucode_data.v_addr) {
2180 IWL_ERROR("ucode not available for device bringup\n");
2181 return -EIO;
2182 }
2183
2184 /* If platform's RF_KILL switch is NOT set to KILL */
2185 if (iwl_read32(priv, CSR_GP_CNTRL) &
2186 CSR_GP_CNTRL_REG_FLAG_HW_RF_KILL_SW)
2187 clear_bit(STATUS_RF_KILL_HW, &priv->status);
2188 else
2189 set_bit(STATUS_RF_KILL_HW, &priv->status);
2190
2191 if (!test_bit(STATUS_IN_SUSPEND, &priv->status) &&
2192 iwl_is_rfkill(priv)) {
2193 iwl_rfkill_set_hw_state(priv);
2194 IWL_WARNING("Radio disabled by %s RF Kill switch\n",
2195 test_bit(STATUS_RF_KILL_HW, &priv->status) ? "HW" : "SW");
2196 return -ENODEV;
2197 }
2198
2199 iwl_rfkill_set_hw_state(priv);
2200 iwl_write32(priv, CSR_INT, 0xFFFFFFFF);
2201
2202 ret = priv->cfg->ops->lib->alloc_shared_mem(priv);
2203 if (ret) {
2204 IWL_ERROR("Unable to allocate shared memory\n");
2205 return ret;
2206 }
2207
2208 ret = iwl_hw_nic_init(priv);
2209 if (ret) {
2210 IWL_ERROR("Unable to init nic\n");
2211 return ret;
2212 }
2213
2214 /* make sure rfkill handshake bits are cleared */
2215 iwl_write32(priv, CSR_UCODE_DRV_GP1_CLR, CSR_UCODE_SW_BIT_RFKILL);
2216 iwl_write32(priv, CSR_UCODE_DRV_GP1_CLR,
2217 CSR_UCODE_DRV_GP1_BIT_CMD_BLOCKED);
2218
2219 /* clear (again), then enable host interrupts */
2220 iwl_write32(priv, CSR_INT, 0xFFFFFFFF);
2221 iwl4965_enable_interrupts(priv);
2222
2223 /* really make sure rfkill handshake bits are cleared */
2224 iwl_write32(priv, CSR_UCODE_DRV_GP1_CLR, CSR_UCODE_SW_BIT_RFKILL);
2225 iwl_write32(priv, CSR_UCODE_DRV_GP1_CLR, CSR_UCODE_SW_BIT_RFKILL);
2226
2227 /* Copy original ucode data image from disk into backup cache.
2228 * This will be used to initialize the on-board processor's
2229 * data SRAM for a clean start when the runtime program first loads. */
2230 memcpy(priv->ucode_data_backup.v_addr, priv->ucode_data.v_addr,
2231 priv->ucode_data.len);
2232
2233 /* We return success when we resume from suspend and rf_kill is on. */
2234 if (test_bit(STATUS_RF_KILL_HW, &priv->status) ||
2235 test_bit(STATUS_RF_KILL_SW, &priv->status))
2236 return 0;
2237
2238 for (i = 0; i < MAX_HW_RESTARTS; i++) {
2239
2240 iwl_clear_stations_table(priv);
2241
2242 /* load bootstrap state machine,
2243 * load bootstrap program into processor's memory,
2244 * prepare to load the "initialize" uCode */
2245 ret = priv->cfg->ops->lib->load_ucode(priv);
2246
2247 if (ret) {
2248 IWL_ERROR("Unable to set up bootstrap uCode: %d\n", ret);
2249 continue;
2250 }
2251
2252 /* Clear out the uCode error bit if it is set */
2253 clear_bit(STATUS_FW_ERROR, &priv->status);
2254
2255 /* start card; "initialize" will load runtime ucode */
2256 iwl4965_nic_start(priv);
2257
2258 IWL_DEBUG_INFO(DRV_NAME " is coming up\n");
2259
2260 return 0;
2261 }
2262
2263 set_bit(STATUS_EXIT_PENDING, &priv->status);
2264 __iwl4965_down(priv);
2265 clear_bit(STATUS_EXIT_PENDING, &priv->status);
2266
2267 /* tried to restart and config the device for as long as our
2268 * patience could withstand */
2269 IWL_ERROR("Unable to initialize device after %d attempts.\n", i);
2270 return -EIO;
2271 }
2272
2273
2274 /*****************************************************************************
2275 *
2276 * Workqueue callbacks
2277 *
2278 *****************************************************************************/
2279
2280 static void iwl_bg_init_alive_start(struct work_struct *data)
2281 {
2282 struct iwl_priv *priv =
2283 container_of(data, struct iwl_priv, init_alive_start.work);
2284
2285 if (test_bit(STATUS_EXIT_PENDING, &priv->status))
2286 return;
2287
2288 mutex_lock(&priv->mutex);
2289 priv->cfg->ops->lib->init_alive_start(priv);
2290 mutex_unlock(&priv->mutex);
2291 }
2292
2293 static void iwl_bg_alive_start(struct work_struct *data)
2294 {
2295 struct iwl_priv *priv =
2296 container_of(data, struct iwl_priv, alive_start.work);
2297
2298 if (test_bit(STATUS_EXIT_PENDING, &priv->status))
2299 return;
2300
2301 mutex_lock(&priv->mutex);
2302 iwl_alive_start(priv);
2303 mutex_unlock(&priv->mutex);
2304 }
2305
2306 static void iwl4965_bg_rf_kill(struct work_struct *work)
2307 {
2308 struct iwl_priv *priv = container_of(work, struct iwl_priv, rf_kill);
2309
2310 wake_up_interruptible(&priv->wait_command_queue);
2311
2312 if (test_bit(STATUS_EXIT_PENDING, &priv->status))
2313 return;
2314
2315 mutex_lock(&priv->mutex);
2316
2317 if (!iwl_is_rfkill(priv)) {
2318 IWL_DEBUG(IWL_DL_RF_KILL,
2319 "HW and/or SW RF Kill no longer active, restarting "
2320 "device\n");
2321 if (!test_bit(STATUS_EXIT_PENDING, &priv->status))
2322 queue_work(priv->workqueue, &priv->restart);
2323 } else {
2324 /* make sure mac80211 stop sending Tx frame */
2325 if (priv->mac80211_registered)
2326 ieee80211_stop_queues(priv->hw);
2327
2328 if (!test_bit(STATUS_RF_KILL_HW, &priv->status))
2329 IWL_DEBUG_RF_KILL("Can not turn radio back on - "
2330 "disabled by SW switch\n");
2331 else
2332 IWL_WARNING("Radio Frequency Kill Switch is On:\n"
2333 "Kill switch must be turned off for "
2334 "wireless networking to work.\n");
2335 }
2336 iwl_rfkill_set_hw_state(priv);
2337
2338 mutex_unlock(&priv->mutex);
2339 }
2340
2341 static void iwl4965_bg_set_monitor(struct work_struct *work)
2342 {
2343 struct iwl_priv *priv = container_of(work,
2344 struct iwl_priv, set_monitor);
2345 int ret;
2346
2347 IWL_DEBUG(IWL_DL_STATE, "setting monitor mode\n");
2348
2349 mutex_lock(&priv->mutex);
2350
2351 ret = iwl4965_set_mode(priv, IEEE80211_IF_TYPE_MNTR);
2352
2353 if (ret) {
2354 if (ret == -EAGAIN)
2355 IWL_DEBUG(IWL_DL_STATE, "leave - not ready\n");
2356 else
2357 IWL_ERROR("iwl4965_set_mode() failed ret = %d\n", ret);
2358 }
2359
2360 mutex_unlock(&priv->mutex);
2361 }
2362
2363 static void iwl_bg_run_time_calib_work(struct work_struct *work)
2364 {
2365 struct iwl_priv *priv = container_of(work, struct iwl_priv,
2366 run_time_calib_work);
2367
2368 mutex_lock(&priv->mutex);
2369
2370 if (test_bit(STATUS_EXIT_PENDING, &priv->status) ||
2371 test_bit(STATUS_SCANNING, &priv->status)) {
2372 mutex_unlock(&priv->mutex);
2373 return;
2374 }
2375
2376 if (priv->start_calib) {
2377 iwl_chain_noise_calibration(priv, &priv->statistics);
2378
2379 iwl_sensitivity_calibration(priv, &priv->statistics);
2380 }
2381
2382 mutex_unlock(&priv->mutex);
2383 return;
2384 }
2385
2386 static void iwl4965_bg_up(struct work_struct *data)
2387 {
2388 struct iwl_priv *priv = container_of(data, struct iwl_priv, up);
2389
2390 if (test_bit(STATUS_EXIT_PENDING, &priv->status))
2391 return;
2392
2393 mutex_lock(&priv->mutex);
2394 __iwl4965_up(priv);
2395 mutex_unlock(&priv->mutex);
2396 }
2397
2398 static void iwl4965_bg_restart(struct work_struct *data)
2399 {
2400 struct iwl_priv *priv = container_of(data, struct iwl_priv, restart);
2401
2402 if (test_bit(STATUS_EXIT_PENDING, &priv->status))
2403 return;
2404
2405 iwl4965_down(priv);
2406 queue_work(priv->workqueue, &priv->up);
2407 }
2408
2409 static void iwl4965_bg_rx_replenish(struct work_struct *data)
2410 {
2411 struct iwl_priv *priv =
2412 container_of(data, struct iwl_priv, rx_replenish);
2413
2414 if (test_bit(STATUS_EXIT_PENDING, &priv->status))
2415 return;
2416
2417 mutex_lock(&priv->mutex);
2418 iwl_rx_replenish(priv);
2419 mutex_unlock(&priv->mutex);
2420 }
2421
2422 #define IWL_DELAY_NEXT_SCAN (HZ*2)
2423
2424 static void iwl4965_post_associate(struct iwl_priv *priv)
2425 {
2426 struct ieee80211_conf *conf = NULL;
2427 int ret = 0;
2428 DECLARE_MAC_BUF(mac);
2429
2430 if (priv->iw_mode == IEEE80211_IF_TYPE_AP) {
2431 IWL_ERROR("%s Should not be called in AP mode\n", __FUNCTION__);
2432 return;
2433 }
2434
2435 IWL_DEBUG_ASSOC("Associated as %d to: %s\n",
2436 priv->assoc_id,
2437 print_mac(mac, priv->active_rxon.bssid_addr));
2438
2439
2440 if (test_bit(STATUS_EXIT_PENDING, &priv->status))
2441 return;
2442
2443
2444 if (!priv->vif || !priv->is_open)
2445 return;
2446
2447 iwl_scan_cancel_timeout(priv, 200);
2448
2449 conf = ieee80211_get_hw_conf(priv->hw);
2450
2451 priv->staging_rxon.filter_flags &= ~RXON_FILTER_ASSOC_MSK;
2452 iwl4965_commit_rxon(priv);
2453
2454 memset(&priv->rxon_timing, 0, sizeof(struct iwl4965_rxon_time_cmd));
2455 iwl4965_setup_rxon_timing(priv);
2456 ret = iwl_send_cmd_pdu(priv, REPLY_RXON_TIMING,
2457 sizeof(priv->rxon_timing), &priv->rxon_timing);
2458 if (ret)
2459 IWL_WARNING("REPLY_RXON_TIMING failed - "
2460 "Attempting to continue.\n");
2461
2462 priv->staging_rxon.filter_flags |= RXON_FILTER_ASSOC_MSK;
2463
2464 if (priv->current_ht_config.is_ht)
2465 iwl_set_rxon_ht(priv, &priv->current_ht_config);
2466
2467 iwl_set_rxon_chain(priv);
2468 priv->staging_rxon.assoc_id = cpu_to_le16(priv->assoc_id);
2469
2470 IWL_DEBUG_ASSOC("assoc id %d beacon interval %d\n",
2471 priv->assoc_id, priv->beacon_int);
2472
2473 if (priv->assoc_capability & WLAN_CAPABILITY_SHORT_PREAMBLE)
2474 priv->staging_rxon.flags |= RXON_FLG_SHORT_PREAMBLE_MSK;
2475 else
2476 priv->staging_rxon.flags &= ~RXON_FLG_SHORT_PREAMBLE_MSK;
2477
2478 if (priv->staging_rxon.flags & RXON_FLG_BAND_24G_MSK) {
2479 if (priv->assoc_capability & WLAN_CAPABILITY_SHORT_SLOT_TIME)
2480 priv->staging_rxon.flags |= RXON_FLG_SHORT_SLOT_MSK;
2481 else
2482 priv->staging_rxon.flags &= ~RXON_FLG_SHORT_SLOT_MSK;
2483
2484 if (priv->iw_mode == IEEE80211_IF_TYPE_IBSS)
2485 priv->staging_rxon.flags &= ~RXON_FLG_SHORT_SLOT_MSK;
2486
2487 }
2488
2489 iwl4965_commit_rxon(priv);
2490
2491 switch (priv->iw_mode) {
2492 case IEEE80211_IF_TYPE_STA:
2493 break;
2494
2495 case IEEE80211_IF_TYPE_IBSS:
2496
2497 /* assume default assoc id */
2498 priv->assoc_id = 1;
2499
2500 iwl_rxon_add_station(priv, priv->bssid, 0);
2501 iwl4965_send_beacon_cmd(priv);
2502
2503 break;
2504
2505 default:
2506 IWL_ERROR("%s Should not be called in %d mode\n",
2507 __FUNCTION__, priv->iw_mode);
2508 break;
2509 }
2510
2511 /* Enable Rx differential gain and sensitivity calibrations */
2512 iwl_chain_noise_reset(priv);
2513 priv->start_calib = 1;
2514
2515 if (priv->iw_mode == IEEE80211_IF_TYPE_IBSS)
2516 priv->assoc_station_added = 1;
2517
2518 iwl4965_activate_qos(priv, 0);
2519
2520 iwl_power_update_mode(priv, 0);
2521 /* we have just associated, don't start scan too early */
2522 priv->next_scan_jiffies = jiffies + IWL_DELAY_NEXT_SCAN;
2523 }
2524
2525
2526 static void iwl4965_bg_post_associate(struct work_struct *data)
2527 {
2528 struct iwl_priv *priv = container_of(data, struct iwl_priv,
2529 post_associate.work);
2530
2531 mutex_lock(&priv->mutex);
2532 iwl4965_post_associate(priv);
2533 mutex_unlock(&priv->mutex);
2534
2535 }
2536
2537 static int iwl4965_mac_config(struct ieee80211_hw *hw, struct ieee80211_conf *conf);
2538
2539 static void iwl_bg_scan_completed(struct work_struct *work)
2540 {
2541 struct iwl_priv *priv =
2542 container_of(work, struct iwl_priv, scan_completed);
2543
2544 IWL_DEBUG_SCAN("SCAN complete scan\n");
2545
2546 if (test_bit(STATUS_EXIT_PENDING, &priv->status))
2547 return;
2548
2549 if (test_bit(STATUS_CONF_PENDING, &priv->status))
2550 iwl4965_mac_config(priv->hw, ieee80211_get_hw_conf(priv->hw));
2551
2552 ieee80211_scan_completed(priv->hw);
2553
2554 /* Since setting the TXPOWER may have been deferred while
2555 * performing the scan, fire one off */
2556 mutex_lock(&priv->mutex);
2557 iwl_set_tx_power(priv, priv->tx_power_user_lmt, true);
2558 mutex_unlock(&priv->mutex);
2559 }
2560
2561 /*****************************************************************************
2562 *
2563 * mac80211 entry point functions
2564 *
2565 *****************************************************************************/
2566
2567 #define UCODE_READY_TIMEOUT (4 * HZ)
2568
2569 static int iwl4965_mac_start(struct ieee80211_hw *hw)
2570 {
2571 struct iwl_priv *priv = hw->priv;
2572 int ret;
2573
2574 IWL_DEBUG_MAC80211("enter\n");
2575
2576 if (pci_enable_device(priv->pci_dev)) {
2577 IWL_ERROR("Fail to pci_enable_device\n");
2578 return -ENODEV;
2579 }
2580 pci_restore_state(priv->pci_dev);
2581 pci_enable_msi(priv->pci_dev);
2582
2583 ret = request_irq(priv->pci_dev->irq, iwl4965_isr, IRQF_SHARED,
2584 DRV_NAME, priv);
2585 if (ret) {
2586 IWL_ERROR("Error allocating IRQ %d\n", priv->pci_dev->irq);
2587 goto out_disable_msi;
2588 }
2589
2590 /* we should be verifying the device is ready to be opened */
2591 mutex_lock(&priv->mutex);
2592
2593 memset(&priv->staging_rxon, 0, sizeof(struct iwl_rxon_cmd));
2594 /* fetch ucode file from disk, alloc and copy to bus-master buffers ...
2595 * ucode filename and max sizes are card-specific. */
2596
2597 if (!priv->ucode_code.len) {
2598 ret = iwl4965_read_ucode(priv);
2599 if (ret) {
2600 IWL_ERROR("Could not read microcode: %d\n", ret);
2601 mutex_unlock(&priv->mutex);
2602 goto out_release_irq;
2603 }
2604 }
2605
2606 ret = __iwl4965_up(priv);
2607
2608 mutex_unlock(&priv->mutex);
2609
2610 if (ret)
2611 goto out_release_irq;
2612
2613 IWL_DEBUG_INFO("Start UP work done.\n");
2614
2615 if (test_bit(STATUS_IN_SUSPEND, &priv->status))
2616 return 0;
2617
2618 /* Wait for START_ALIVE from Run Time ucode. Otherwise callbacks from
2619 * mac80211 will not be run successfully. */
2620 ret = wait_event_interruptible_timeout(priv->wait_command_queue,
2621 test_bit(STATUS_READY, &priv->status),
2622 UCODE_READY_TIMEOUT);
2623 if (!ret) {
2624 if (!test_bit(STATUS_READY, &priv->status)) {
2625 IWL_ERROR("START_ALIVE timeout after %dms.\n",
2626 jiffies_to_msecs(UCODE_READY_TIMEOUT));
2627 ret = -ETIMEDOUT;
2628 goto out_release_irq;
2629 }
2630
2631 priv->is_open = 1;
2632 }
2633 IWL_DEBUG_MAC80211("leave\n");
2634 return 0;
2635
2636 out_release_irq:
2637 free_irq(priv->pci_dev->irq, priv);
2638 out_disable_msi:
2639 pci_disable_msi(priv->pci_dev);
2640 pci_disable_device(priv->pci_dev);
2641 priv->is_open = 0;
2642 IWL_DEBUG_MAC80211("leave - failed\n");
2643 return ret;
2644 }
2645
2646 static void iwl4965_mac_stop(struct ieee80211_hw *hw)
2647 {
2648 struct iwl_priv *priv = hw->priv;
2649
2650 IWL_DEBUG_MAC80211("enter\n");
2651
2652 if (!priv->is_open) {
2653 IWL_DEBUG_MAC80211("leave - skip\n");
2654 return;
2655 }
2656
2657 priv->is_open = 0;
2658
2659 if (iwl_is_ready_rf(priv)) {
2660 /* stop mac, cancel any scan request and clear
2661 * RXON_FILTER_ASSOC_MSK BIT
2662 */
2663 mutex_lock(&priv->mutex);
2664 iwl_scan_cancel_timeout(priv, 100);
2665 cancel_delayed_work(&priv->post_associate);
2666 mutex_unlock(&priv->mutex);
2667 }
2668
2669 iwl4965_down(priv);
2670
2671 flush_workqueue(priv->workqueue);
2672 free_irq(priv->pci_dev->irq, priv);
2673 pci_disable_msi(priv->pci_dev);
2674 pci_save_state(priv->pci_dev);
2675 pci_disable_device(priv->pci_dev);
2676
2677 IWL_DEBUG_MAC80211("leave\n");
2678 }
2679
2680 static int iwl4965_mac_tx(struct ieee80211_hw *hw, struct sk_buff *skb)
2681 {
2682 struct iwl_priv *priv = hw->priv;
2683
2684 IWL_DEBUG_MAC80211("enter\n");
2685
2686 if (priv->iw_mode == IEEE80211_IF_TYPE_MNTR) {
2687 IWL_DEBUG_MAC80211("leave - monitor\n");
2688 return -1;
2689 }
2690
2691 IWL_DEBUG_TX("dev->xmit(%d bytes) at rate 0x%02x\n", skb->len,
2692 ieee80211_get_tx_rate(hw, IEEE80211_SKB_CB(skb))->bitrate);
2693
2694 if (iwl_tx_skb(priv, skb))
2695 dev_kfree_skb_any(skb);
2696
2697 IWL_DEBUG_MAC80211("leave\n");
2698 return 0;
2699 }
2700
2701 static int iwl4965_mac_add_interface(struct ieee80211_hw *hw,
2702 struct ieee80211_if_init_conf *conf)
2703 {
2704 struct iwl_priv *priv = hw->priv;
2705 unsigned long flags;
2706 DECLARE_MAC_BUF(mac);
2707
2708 IWL_DEBUG_MAC80211("enter: type %d\n", conf->type);
2709
2710 if (priv->vif) {
2711 IWL_DEBUG_MAC80211("leave - vif != NULL\n");
2712 return -EOPNOTSUPP;
2713 }
2714
2715 spin_lock_irqsave(&priv->lock, flags);
2716 priv->vif = conf->vif;
2717
2718 spin_unlock_irqrestore(&priv->lock, flags);
2719
2720 mutex_lock(&priv->mutex);
2721
2722 if (conf->mac_addr) {
2723 IWL_DEBUG_MAC80211("Set %s\n", print_mac(mac, conf->mac_addr));
2724 memcpy(priv->mac_addr, conf->mac_addr, ETH_ALEN);
2725 }
2726
2727 if (iwl4965_set_mode(priv, conf->type) == -EAGAIN)
2728 /* we are not ready, will run again when ready */
2729 set_bit(STATUS_MODE_PENDING, &priv->status);
2730
2731 mutex_unlock(&priv->mutex);
2732
2733 IWL_DEBUG_MAC80211("leave\n");
2734 return 0;
2735 }
2736
2737 /**
2738 * iwl4965_mac_config - mac80211 config callback
2739 *
2740 * We ignore conf->flags & IEEE80211_CONF_SHORT_SLOT_TIME since it seems to
2741 * be set inappropriately and the driver currently sets the hardware up to
2742 * use it whenever needed.
2743 */
2744 static int iwl4965_mac_config(struct ieee80211_hw *hw, struct ieee80211_conf *conf)
2745 {
2746 struct iwl_priv *priv = hw->priv;
2747 const struct iwl_channel_info *ch_info;
2748 unsigned long flags;
2749 int ret = 0;
2750 u16 channel;
2751
2752 mutex_lock(&priv->mutex);
2753 IWL_DEBUG_MAC80211("enter to channel %d\n", conf->channel->hw_value);
2754
2755 priv->add_radiotap = !!(conf->flags & IEEE80211_CONF_RADIOTAP);
2756
2757 if (conf->radio_enabled && iwl_radio_kill_sw_enable_radio(priv)) {
2758 IWL_DEBUG_MAC80211("leave - RF-KILL - waiting for uCode\n");
2759 goto out;
2760 }
2761
2762 if (!conf->radio_enabled)
2763 iwl_radio_kill_sw_disable_radio(priv);
2764
2765 if (!iwl_is_ready(priv)) {
2766 IWL_DEBUG_MAC80211("leave - not ready\n");
2767 ret = -EIO;
2768 goto out;
2769 }
2770
2771 if (unlikely(!priv->cfg->mod_params->disable_hw_scan &&
2772 test_bit(STATUS_SCANNING, &priv->status))) {
2773 IWL_DEBUG_MAC80211("leave - scanning\n");
2774 set_bit(STATUS_CONF_PENDING, &priv->status);
2775 mutex_unlock(&priv->mutex);
2776 return 0;
2777 }
2778
2779 channel = ieee80211_frequency_to_channel(conf->channel->center_freq);
2780 ch_info = iwl_get_channel_info(priv, conf->channel->band, channel);
2781 if (!is_channel_valid(ch_info)) {
2782 IWL_DEBUG_MAC80211("leave - invalid channel\n");
2783 ret = -EINVAL;
2784 goto out;
2785 }
2786
2787 if (priv->iw_mode == IEEE80211_IF_TYPE_IBSS &&
2788 !is_channel_ibss(ch_info)) {
2789 IWL_ERROR("channel %d in band %d not IBSS channel\n",
2790 conf->channel->hw_value, conf->channel->band);
2791 ret = -EINVAL;
2792 goto out;
2793 }
2794
2795 spin_lock_irqsave(&priv->lock, flags);
2796
2797 /* if we are switching from ht to 2.4 clear flags
2798 * from any ht related info since 2.4 does not
2799 * support ht */
2800 if ((le16_to_cpu(priv->staging_rxon.channel) != channel)
2801 #ifdef IEEE80211_CONF_CHANNEL_SWITCH
2802 && !(conf->flags & IEEE80211_CONF_CHANNEL_SWITCH)
2803 #endif
2804 )
2805 priv->staging_rxon.flags = 0;
2806
2807 iwl_set_rxon_channel(priv, conf->channel->band, channel);
2808
2809 iwl_set_flags_for_band(priv, conf->channel->band);
2810
2811 /* The list of supported rates and rate mask can be different
2812 * for each band; since the band may have changed, reset
2813 * the rate mask to what mac80211 lists */
2814 iwl4965_set_rate(priv);
2815
2816 spin_unlock_irqrestore(&priv->lock, flags);
2817
2818 #ifdef IEEE80211_CONF_CHANNEL_SWITCH
2819 if (conf->flags & IEEE80211_CONF_CHANNEL_SWITCH) {
2820 iwl4965_hw_channel_switch(priv, conf->channel);
2821 goto out;
2822 }
2823 #endif
2824
2825 if (!conf->radio_enabled) {
2826 IWL_DEBUG_MAC80211("leave - radio disabled\n");
2827 goto out;
2828 }
2829
2830 if (iwl_is_rfkill(priv)) {
2831 IWL_DEBUG_MAC80211("leave - RF kill\n");
2832 ret = -EIO;
2833 goto out;
2834 }
2835
2836 IWL_DEBUG_MAC80211("TX Power old=%d new=%d\n",
2837 priv->tx_power_user_lmt, conf->power_level);
2838
2839 iwl_set_tx_power(priv, conf->power_level, false);
2840
2841 iwl4965_set_rate(priv);
2842
2843 if (memcmp(&priv->active_rxon,
2844 &priv->staging_rxon, sizeof(priv->staging_rxon)))
2845 iwl4965_commit_rxon(priv);
2846 else
2847 IWL_DEBUG_INFO("No re-sending same RXON configuration.\n");
2848
2849 IWL_DEBUG_MAC80211("leave\n");
2850
2851 out:
2852 clear_bit(STATUS_CONF_PENDING, &priv->status);
2853 mutex_unlock(&priv->mutex);
2854 return ret;
2855 }
2856
2857 static void iwl4965_config_ap(struct iwl_priv *priv)
2858 {
2859 int ret = 0;
2860
2861 if (test_bit(STATUS_EXIT_PENDING, &priv->status))
2862 return;
2863
2864 /* The following should be done only at AP bring up */
2865 if (!(iwl_is_associated(priv))) {
2866
2867 /* RXON - unassoc (to set timing command) */
2868 priv->staging_rxon.filter_flags &= ~RXON_FILTER_ASSOC_MSK;
2869 iwl4965_commit_rxon(priv);
2870
2871 /* RXON Timing */
2872 memset(&priv->rxon_timing, 0, sizeof(struct iwl4965_rxon_time_cmd));
2873 iwl4965_setup_rxon_timing(priv);
2874 ret = iwl_send_cmd_pdu(priv, REPLY_RXON_TIMING,
2875 sizeof(priv->rxon_timing), &priv->rxon_timing);
2876 if (ret)
2877 IWL_WARNING("REPLY_RXON_TIMING failed - "
2878 "Attempting to continue.\n");
2879
2880 iwl_set_rxon_chain(priv);
2881
2882 /* FIXME: what should be the assoc_id for AP? */
2883 priv->staging_rxon.assoc_id = cpu_to_le16(priv->assoc_id);
2884 if (priv->assoc_capability & WLAN_CAPABILITY_SHORT_PREAMBLE)
2885 priv->staging_rxon.flags |=
2886 RXON_FLG_SHORT_PREAMBLE_MSK;
2887 else
2888 priv->staging_rxon.flags &=
2889 ~RXON_FLG_SHORT_PREAMBLE_MSK;
2890
2891 if (priv->staging_rxon.flags & RXON_FLG_BAND_24G_MSK) {
2892 if (priv->assoc_capability &
2893 WLAN_CAPABILITY_SHORT_SLOT_TIME)
2894 priv->staging_rxon.flags |=
2895 RXON_FLG_SHORT_SLOT_MSK;
2896 else
2897 priv->staging_rxon.flags &=
2898 ~RXON_FLG_SHORT_SLOT_MSK;
2899
2900 if (priv->iw_mode == IEEE80211_IF_TYPE_IBSS)
2901 priv->staging_rxon.flags &=
2902 ~RXON_FLG_SHORT_SLOT_MSK;
2903 }
2904 /* restore RXON assoc */
2905 priv->staging_rxon.filter_flags |= RXON_FILTER_ASSOC_MSK;
2906 iwl4965_commit_rxon(priv);
2907 iwl4965_activate_qos(priv, 1);
2908 iwl_rxon_add_station(priv, iwl_bcast_addr, 0);
2909 }
2910 iwl4965_send_beacon_cmd(priv);
2911
2912 /* FIXME - we need to add code here to detect a totally new
2913 * configuration, reset the AP, unassoc, rxon timing, assoc,
2914 * clear sta table, add BCAST sta... */
2915 }
2916
2917 static int iwl4965_mac_config_interface(struct ieee80211_hw *hw,
2918 struct ieee80211_vif *vif,
2919 struct ieee80211_if_conf *conf)
2920 {
2921 struct iwl_priv *priv = hw->priv;
2922 DECLARE_MAC_BUF(mac);
2923 unsigned long flags;
2924 int rc;
2925
2926 if (conf == NULL)
2927 return -EIO;
2928
2929 if (priv->vif != vif) {
2930 IWL_DEBUG_MAC80211("leave - priv->vif != vif\n");
2931 return 0;
2932 }
2933
2934 if ((priv->iw_mode == IEEE80211_IF_TYPE_AP) &&
2935 (!conf->beacon || !conf->ssid_len)) {
2936 IWL_DEBUG_MAC80211
2937 ("Leaving in AP mode because HostAPD is not ready.\n");
2938 return 0;
2939 }
2940
2941 if (!iwl_is_alive(priv))
2942 return -EAGAIN;
2943
2944 mutex_lock(&priv->mutex);
2945
2946 if (conf->bssid)
2947 IWL_DEBUG_MAC80211("bssid: %s\n",
2948 print_mac(mac, conf->bssid));
2949
2950 /*
2951 * very dubious code was here; the probe filtering flag is never set:
2952 *
2953 if (unlikely(test_bit(STATUS_SCANNING, &priv->status)) &&
2954 !(priv->hw->flags & IEEE80211_HW_NO_PROBE_FILTERING)) {
2955 */
2956
2957 if (priv->iw_mode == IEEE80211_IF_TYPE_AP) {
2958 if (!conf->bssid) {
2959 conf->bssid = priv->mac_addr;
2960 memcpy(priv->bssid, priv->mac_addr, ETH_ALEN);
2961 IWL_DEBUG_MAC80211("bssid was set to: %s\n",
2962 print_mac(mac, conf->bssid));
2963 }
2964 if (priv->ibss_beacon)
2965 dev_kfree_skb(priv->ibss_beacon);
2966
2967 priv->ibss_beacon = conf->beacon;
2968 }
2969
2970 if (iwl_is_rfkill(priv))
2971 goto done;
2972
2973 if (conf->bssid && !is_zero_ether_addr(conf->bssid) &&
2974 !is_multicast_ether_addr(conf->bssid)) {
2975 /* If there is currently a HW scan going on in the background
2976 * then we need to cancel it else the RXON below will fail. */
2977 if (iwl_scan_cancel_timeout(priv, 100)) {
2978 IWL_WARNING("Aborted scan still in progress "
2979 "after 100ms\n");
2980 IWL_DEBUG_MAC80211("leaving - scan abort failed.\n");
2981 mutex_unlock(&priv->mutex);
2982 return -EAGAIN;
2983 }
2984 memcpy(priv->staging_rxon.bssid_addr, conf->bssid, ETH_ALEN);
2985
2986 /* TODO: Audit driver for usage of these members and see
2987 * if mac80211 deprecates them (priv->bssid looks like it
2988 * shouldn't be there, but I haven't scanned the IBSS code
2989 * to verify) - jpk */
2990 memcpy(priv->bssid, conf->bssid, ETH_ALEN);
2991
2992 if (priv->iw_mode == IEEE80211_IF_TYPE_AP)
2993 iwl4965_config_ap(priv);
2994 else {
2995 rc = iwl4965_commit_rxon(priv);
2996 if ((priv->iw_mode == IEEE80211_IF_TYPE_STA) && rc)
2997 iwl_rxon_add_station(
2998 priv, priv->active_rxon.bssid_addr, 1);
2999 }
3000
3001 } else {
3002 iwl_scan_cancel_timeout(priv, 100);
3003 priv->staging_rxon.filter_flags &= ~RXON_FILTER_ASSOC_MSK;
3004 iwl4965_commit_rxon(priv);
3005 }
3006
3007 done:
3008 spin_lock_irqsave(&priv->lock, flags);
3009 if (!conf->ssid_len)
3010 memset(priv->essid, 0, IW_ESSID_MAX_SIZE);
3011 else
3012 memcpy(priv->essid, conf->ssid, conf->ssid_len);
3013
3014 priv->essid_len = conf->ssid_len;
3015 spin_unlock_irqrestore(&priv->lock, flags);
3016
3017 IWL_DEBUG_MAC80211("leave\n");
3018 mutex_unlock(&priv->mutex);
3019
3020 return 0;
3021 }
3022
3023 static void iwl4965_configure_filter(struct ieee80211_hw *hw,
3024 unsigned int changed_flags,
3025 unsigned int *total_flags,
3026 int mc_count, struct dev_addr_list *mc_list)
3027 {
3028 /*
3029 * XXX: dummy
3030 * see also iwl4965_connection_init_rx_config
3031 */
3032 struct iwl_priv *priv = hw->priv;
3033 int new_flags = 0;
3034 if (changed_flags & (FIF_PROMISC_IN_BSS | FIF_OTHER_BSS)) {
3035 if (*total_flags & (FIF_PROMISC_IN_BSS | FIF_OTHER_BSS)) {
3036 IWL_DEBUG_MAC80211("Enter: type %d (0x%x, 0x%x)\n",
3037 IEEE80211_IF_TYPE_MNTR,
3038 changed_flags, *total_flags);
3039 /* queue work 'cuz mac80211 is holding a lock which
3040 * prevents us from issuing (synchronous) f/w cmds */
3041 queue_work(priv->workqueue, &priv->set_monitor);
3042 new_flags &= FIF_PROMISC_IN_BSS |
3043 FIF_OTHER_BSS |
3044 FIF_ALLMULTI;
3045 }
3046 }
3047 *total_flags = new_flags;
3048 }
3049
3050 static void iwl4965_mac_remove_interface(struct ieee80211_hw *hw,
3051 struct ieee80211_if_init_conf *conf)
3052 {
3053 struct iwl_priv *priv = hw->priv;
3054
3055 IWL_DEBUG_MAC80211("enter\n");
3056
3057 mutex_lock(&priv->mutex);
3058
3059 if (iwl_is_ready_rf(priv)) {
3060 iwl_scan_cancel_timeout(priv, 100);
3061 cancel_delayed_work(&priv->post_associate);
3062 priv->staging_rxon.filter_flags &= ~RXON_FILTER_ASSOC_MSK;
3063 iwl4965_commit_rxon(priv);
3064 }
3065 if (priv->vif == conf->vif) {
3066 priv->vif = NULL;
3067 memset(priv->bssid, 0, ETH_ALEN);
3068 memset(priv->essid, 0, IW_ESSID_MAX_SIZE);
3069 priv->essid_len = 0;
3070 }
3071 mutex_unlock(&priv->mutex);
3072
3073 IWL_DEBUG_MAC80211("leave\n");
3074
3075 }
3076
3077 #define IWL_DELAY_NEXT_SCAN_AFTER_ASSOC (HZ*6)
3078 static void iwl4965_bss_info_changed(struct ieee80211_hw *hw,
3079 struct ieee80211_vif *vif,
3080 struct ieee80211_bss_conf *bss_conf,
3081 u32 changes)
3082 {
3083 struct iwl_priv *priv = hw->priv;
3084
3085 IWL_DEBUG_MAC80211("changes = 0x%X\n", changes);
3086
3087 if (changes & BSS_CHANGED_ERP_PREAMBLE) {
3088 IWL_DEBUG_MAC80211("ERP_PREAMBLE %d\n",
3089 bss_conf->use_short_preamble);
3090 if (bss_conf->use_short_preamble)
3091 priv->staging_rxon.flags |= RXON_FLG_SHORT_PREAMBLE_MSK;
3092 else
3093 priv->staging_rxon.flags &= ~RXON_FLG_SHORT_PREAMBLE_MSK;
3094 }
3095
3096 if (changes & BSS_CHANGED_ERP_CTS_PROT) {
3097 IWL_DEBUG_MAC80211("ERP_CTS %d\n", bss_conf->use_cts_prot);
3098 if (bss_conf->use_cts_prot && (priv->band != IEEE80211_BAND_5GHZ))
3099 priv->staging_rxon.flags |= RXON_FLG_TGG_PROTECT_MSK;
3100 else
3101 priv->staging_rxon.flags &= ~RXON_FLG_TGG_PROTECT_MSK;
3102 }
3103
3104 if (changes & BSS_CHANGED_HT) {
3105 IWL_DEBUG_MAC80211("HT %d\n", bss_conf->assoc_ht);
3106 iwl4965_ht_conf(priv, bss_conf);
3107 iwl_set_rxon_chain(priv);
3108 }
3109
3110 if (changes & BSS_CHANGED_ASSOC) {
3111 IWL_DEBUG_MAC80211("ASSOC %d\n", bss_conf->assoc);
3112 /* This should never happen as this function should
3113 * never be called from interrupt context. */
3114 if (WARN_ON_ONCE(in_interrupt()))
3115 return;
3116 if (bss_conf->assoc) {
3117 priv->assoc_id = bss_conf->aid;
3118 priv->beacon_int = bss_conf->beacon_int;
3119 priv->timestamp = bss_conf->timestamp;
3120 priv->assoc_capability = bss_conf->assoc_capability;
3121 priv->next_scan_jiffies = jiffies +
3122 IWL_DELAY_NEXT_SCAN_AFTER_ASSOC;
3123 mutex_lock(&priv->mutex);
3124 iwl4965_post_associate(priv);
3125 mutex_unlock(&priv->mutex);
3126 } else {
3127 priv->assoc_id = 0;
3128 IWL_DEBUG_MAC80211("DISASSOC %d\n", bss_conf->assoc);
3129 }
3130 } else if (changes && iwl_is_associated(priv) && priv->assoc_id) {
3131 IWL_DEBUG_MAC80211("Associated Changes %d\n", changes);
3132 iwl_send_rxon_assoc(priv);
3133 }
3134
3135 }
3136
3137 static int iwl4965_mac_hw_scan(struct ieee80211_hw *hw, u8 *ssid, size_t len)
3138 {
3139 int rc = 0;
3140 unsigned long flags;
3141 struct iwl_priv *priv = hw->priv;
3142
3143 IWL_DEBUG_MAC80211("enter\n");
3144
3145 mutex_lock(&priv->mutex);
3146 spin_lock_irqsave(&priv->lock, flags);
3147
3148 if (!iwl_is_ready_rf(priv)) {
3149 rc = -EIO;
3150 IWL_DEBUG_MAC80211("leave - not ready or exit pending\n");
3151 goto out_unlock;
3152 }
3153
3154 if (priv->iw_mode == IEEE80211_IF_TYPE_AP) { /* APs don't scan */
3155 rc = -EIO;
3156 IWL_ERROR("ERROR: APs don't scan\n");
3157 goto out_unlock;
3158 }
3159
3160 /* we don't schedule scan within next_scan_jiffies period */
3161 if (priv->next_scan_jiffies &&
3162 time_after(priv->next_scan_jiffies, jiffies)) {
3163 rc = -EAGAIN;
3164 goto out_unlock;
3165 }
3166 /* if we just finished scan ask for delay */
3167 if (priv->last_scan_jiffies && time_after(priv->last_scan_jiffies +
3168 IWL_DELAY_NEXT_SCAN, jiffies)) {
3169 rc = -EAGAIN;
3170 goto out_unlock;
3171 }
3172 if (len) {
3173 IWL_DEBUG_SCAN("direct scan for %s [%d]\n ",
3174 iwl_escape_essid(ssid, len), (int)len);
3175
3176 priv->one_direct_scan = 1;
3177 priv->direct_ssid_len = (u8)
3178 min((u8) len, (u8) IW_ESSID_MAX_SIZE);
3179 memcpy(priv->direct_ssid, ssid, priv->direct_ssid_len);
3180 } else
3181 priv->one_direct_scan = 0;
3182
3183 rc = iwl_scan_initiate(priv);
3184
3185 IWL_DEBUG_MAC80211("leave\n");
3186
3187 out_unlock:
3188 spin_unlock_irqrestore(&priv->lock, flags);
3189 mutex_unlock(&priv->mutex);
3190
3191 return rc;
3192 }
3193
3194 static void iwl4965_mac_update_tkip_key(struct ieee80211_hw *hw,
3195 struct ieee80211_key_conf *keyconf, const u8 *addr,
3196 u32 iv32, u16 *phase1key)
3197 {
3198 struct iwl_priv *priv = hw->priv;
3199 u8 sta_id = IWL_INVALID_STATION;
3200 unsigned long flags;
3201 __le16 key_flags = 0;
3202 int i;
3203 DECLARE_MAC_BUF(mac);
3204
3205 IWL_DEBUG_MAC80211("enter\n");
3206
3207 sta_id = iwl_find_station(priv, addr);
3208 if (sta_id == IWL_INVALID_STATION) {
3209 IWL_DEBUG_MAC80211("leave - %s not in station map.\n",
3210 print_mac(mac, addr));
3211 return;
3212 }
3213
3214 iwl_scan_cancel_timeout(priv, 100);
3215
3216 key_flags |= (STA_KEY_FLG_TKIP | STA_KEY_FLG_MAP_KEY_MSK);
3217 key_flags |= cpu_to_le16(keyconf->keyidx << STA_KEY_FLG_KEYID_POS);
3218 key_flags &= ~STA_KEY_FLG_INVALID;
3219
3220 if (sta_id == priv->hw_params.bcast_sta_id)
3221 key_flags |= STA_KEY_MULTICAST_MSK;
3222
3223 spin_lock_irqsave(&priv->sta_lock, flags);
3224
3225 priv->stations[sta_id].sta.key.key_flags = key_flags;
3226 priv->stations[sta_id].sta.key.tkip_rx_tsc_byte2 = (u8) iv32;
3227
3228 for (i = 0; i < 5; i++)
3229 priv->stations[sta_id].sta.key.tkip_rx_ttak[i] =
3230 cpu_to_le16(phase1key[i]);
3231
3232 priv->stations[sta_id].sta.sta.modify_mask = STA_MODIFY_KEY_MASK;
3233 priv->stations[sta_id].sta.mode = STA_CONTROL_MODIFY_MSK;
3234
3235 iwl_send_add_sta(priv, &priv->stations[sta_id].sta, CMD_ASYNC);
3236
3237 spin_unlock_irqrestore(&priv->sta_lock, flags);
3238
3239 IWL_DEBUG_MAC80211("leave\n");
3240 }
3241
3242 static int iwl4965_mac_set_key(struct ieee80211_hw *hw, enum set_key_cmd cmd,
3243 const u8 *local_addr, const u8 *addr,
3244 struct ieee80211_key_conf *key)
3245 {
3246 struct iwl_priv *priv = hw->priv;
3247 DECLARE_MAC_BUF(mac);
3248 int ret = 0;
3249 u8 sta_id = IWL_INVALID_STATION;
3250 u8 is_default_wep_key = 0;
3251
3252 IWL_DEBUG_MAC80211("enter\n");
3253
3254 if (priv->hw_params.sw_crypto) {
3255 IWL_DEBUG_MAC80211("leave - hwcrypto disabled\n");
3256 return -EOPNOTSUPP;
3257 }
3258
3259 if (is_zero_ether_addr(addr))
3260 /* only support pairwise keys */
3261 return -EOPNOTSUPP;
3262
3263 sta_id = iwl_find_station(priv, addr);
3264 if (sta_id == IWL_INVALID_STATION) {
3265 IWL_DEBUG_MAC80211("leave - %s not in station map.\n",
3266 print_mac(mac, addr));
3267 return -EINVAL;
3268
3269 }
3270
3271 mutex_lock(&priv->mutex);
3272 iwl_scan_cancel_timeout(priv, 100);
3273 mutex_unlock(&priv->mutex);
3274
3275 /* If we are getting WEP group key and we didn't receive any key mapping
3276 * so far, we are in legacy wep mode (group key only), otherwise we are
3277 * in 1X mode.
3278 * In legacy wep mode, we use another host command to the uCode */
3279 if (key->alg == ALG_WEP && sta_id == priv->hw_params.bcast_sta_id &&
3280 priv->iw_mode != IEEE80211_IF_TYPE_AP) {
3281 if (cmd == SET_KEY)
3282 is_default_wep_key = !priv->key_mapping_key;
3283 else
3284 is_default_wep_key =
3285 (key->hw_key_idx == HW_KEY_DEFAULT);
3286 }
3287
3288 switch (cmd) {
3289 case SET_KEY:
3290 if (is_default_wep_key)
3291 ret = iwl_set_default_wep_key(priv, key);
3292 else
3293 ret = iwl_set_dynamic_key(priv, key, sta_id);
3294
3295 IWL_DEBUG_MAC80211("enable hwcrypto key\n");
3296 break;
3297 case DISABLE_KEY:
3298 if (is_default_wep_key)
3299 ret = iwl_remove_default_wep_key(priv, key);
3300 else
3301 ret = iwl_remove_dynamic_key(priv, key, sta_id);
3302
3303 IWL_DEBUG_MAC80211("disable hwcrypto key\n");
3304 break;
3305 default:
3306 ret = -EINVAL;
3307 }
3308
3309 IWL_DEBUG_MAC80211("leave\n");
3310
3311 return ret;
3312 }
3313
3314 static int iwl4965_mac_conf_tx(struct ieee80211_hw *hw, u16 queue,
3315 const struct ieee80211_tx_queue_params *params)
3316 {
3317 struct iwl_priv *priv = hw->priv;
3318 unsigned long flags;
3319 int q;
3320
3321 IWL_DEBUG_MAC80211("enter\n");
3322
3323 if (!iwl_is_ready_rf(priv)) {
3324 IWL_DEBUG_MAC80211("leave - RF not ready\n");
3325 return -EIO;
3326 }
3327
3328 if (queue >= AC_NUM) {
3329 IWL_DEBUG_MAC80211("leave - queue >= AC_NUM %d\n", queue);
3330 return 0;
3331 }
3332
3333 if (!priv->qos_data.qos_enable) {
3334 priv->qos_data.qos_active = 0;
3335 IWL_DEBUG_MAC80211("leave - qos not enabled\n");
3336 return 0;
3337 }
3338 q = AC_NUM - 1 - queue;
3339
3340 spin_lock_irqsave(&priv->lock, flags);
3341
3342 priv->qos_data.def_qos_parm.ac[q].cw_min = cpu_to_le16(params->cw_min);
3343 priv->qos_data.def_qos_parm.ac[q].cw_max = cpu_to_le16(params->cw_max);
3344 priv->qos_data.def_qos_parm.ac[q].aifsn = params->aifs;
3345 priv->qos_data.def_qos_parm.ac[q].edca_txop =
3346 cpu_to_le16((params->txop * 32));
3347
3348 priv->qos_data.def_qos_parm.ac[q].reserved1 = 0;
3349 priv->qos_data.qos_active = 1;
3350
3351 spin_unlock_irqrestore(&priv->lock, flags);
3352
3353 mutex_lock(&priv->mutex);
3354 if (priv->iw_mode == IEEE80211_IF_TYPE_AP)
3355 iwl4965_activate_qos(priv, 1);
3356 else if (priv->assoc_id && iwl_is_associated(priv))
3357 iwl4965_activate_qos(priv, 0);
3358
3359 mutex_unlock(&priv->mutex);
3360
3361 IWL_DEBUG_MAC80211("leave\n");
3362 return 0;
3363 }
3364
3365 static int iwl4965_mac_get_tx_stats(struct ieee80211_hw *hw,
3366 struct ieee80211_tx_queue_stats *stats)
3367 {
3368 struct iwl_priv *priv = hw->priv;
3369 int i, avail;
3370 struct iwl_tx_queue *txq;
3371 struct iwl_queue *q;
3372 unsigned long flags;
3373
3374 IWL_DEBUG_MAC80211("enter\n");
3375
3376 if (!iwl_is_ready_rf(priv)) {
3377 IWL_DEBUG_MAC80211("leave - RF not ready\n");
3378 return -EIO;
3379 }
3380
3381 spin_lock_irqsave(&priv->lock, flags);
3382
3383 for (i = 0; i < AC_NUM; i++) {
3384 txq = &priv->txq[i];
3385 q = &txq->q;
3386 avail = iwl_queue_space(q);
3387
3388 stats[i].len = q->n_window - avail;
3389 stats[i].limit = q->n_window - q->high_mark;
3390 stats[i].count = q->n_window;
3391
3392 }
3393 spin_unlock_irqrestore(&priv->lock, flags);
3394
3395 IWL_DEBUG_MAC80211("leave\n");
3396
3397 return 0;
3398 }
3399
3400 static int iwl4965_mac_get_stats(struct ieee80211_hw *hw,
3401 struct ieee80211_low_level_stats *stats)
3402 {
3403 struct iwl_priv *priv = hw->priv;
3404
3405 priv = hw->priv;
3406 IWL_DEBUG_MAC80211("enter\n");
3407 IWL_DEBUG_MAC80211("leave\n");
3408
3409 return 0;
3410 }
3411
3412 static void iwl4965_mac_reset_tsf(struct ieee80211_hw *hw)
3413 {
3414 struct iwl_priv *priv = hw->priv;
3415 unsigned long flags;
3416
3417 mutex_lock(&priv->mutex);
3418 IWL_DEBUG_MAC80211("enter\n");
3419
3420 spin_lock_irqsave(&priv->lock, flags);
3421 memset(&priv->current_ht_config, 0, sizeof(struct iwl_ht_info));
3422 spin_unlock_irqrestore(&priv->lock, flags);
3423
3424 iwl_reset_qos(priv);
3425
3426 cancel_delayed_work(&priv->post_associate);
3427
3428 spin_lock_irqsave(&priv->lock, flags);
3429 priv->assoc_id = 0;
3430 priv->assoc_capability = 0;
3431 priv->assoc_station_added = 0;
3432
3433 /* new association get rid of ibss beacon skb */
3434 if (priv->ibss_beacon)
3435 dev_kfree_skb(priv->ibss_beacon);
3436
3437 priv->ibss_beacon = NULL;
3438
3439 priv->beacon_int = priv->hw->conf.beacon_int;
3440 priv->timestamp = 0;
3441 if ((priv->iw_mode == IEEE80211_IF_TYPE_STA))
3442 priv->beacon_int = 0;
3443
3444 spin_unlock_irqrestore(&priv->lock, flags);
3445
3446 if (!iwl_is_ready_rf(priv)) {
3447 IWL_DEBUG_MAC80211("leave - not ready\n");
3448 mutex_unlock(&priv->mutex);
3449 return;
3450 }
3451
3452 /* we are restarting association process
3453 * clear RXON_FILTER_ASSOC_MSK bit
3454 */
3455 if (priv->iw_mode != IEEE80211_IF_TYPE_AP) {
3456 iwl_scan_cancel_timeout(priv, 100);
3457 priv->staging_rxon.filter_flags &= ~RXON_FILTER_ASSOC_MSK;
3458 iwl4965_commit_rxon(priv);
3459 }
3460
3461 iwl_power_update_mode(priv, 0);
3462
3463 /* Per mac80211.h: This is only used in IBSS mode... */
3464 if (priv->iw_mode != IEEE80211_IF_TYPE_IBSS) {
3465
3466 IWL_DEBUG_MAC80211("leave - not in IBSS\n");
3467 mutex_unlock(&priv->mutex);
3468 return;
3469 }
3470
3471 iwl4965_set_rate(priv);
3472
3473 mutex_unlock(&priv->mutex);
3474
3475 IWL_DEBUG_MAC80211("leave\n");
3476 }
3477
3478 static int iwl4965_mac_beacon_update(struct ieee80211_hw *hw, struct sk_buff *skb)
3479 {
3480 struct iwl_priv *priv = hw->priv;
3481 unsigned long flags;
3482 __le64 timestamp;
3483
3484 mutex_lock(&priv->mutex);
3485 IWL_DEBUG_MAC80211("enter\n");
3486
3487 if (!iwl_is_ready_rf(priv)) {
3488 IWL_DEBUG_MAC80211("leave - RF not ready\n");
3489 mutex_unlock(&priv->mutex);
3490 return -EIO;
3491 }
3492
3493 if (priv->iw_mode != IEEE80211_IF_TYPE_IBSS) {
3494 IWL_DEBUG_MAC80211("leave - not IBSS\n");
3495 mutex_unlock(&priv->mutex);
3496 return -EIO;
3497 }
3498
3499 spin_lock_irqsave(&priv->lock, flags);
3500
3501 if (priv->ibss_beacon)
3502 dev_kfree_skb(priv->ibss_beacon);
3503
3504 priv->ibss_beacon = skb;
3505
3506 priv->assoc_id = 0;
3507 timestamp = ((struct ieee80211_mgmt *)skb->data)->u.beacon.timestamp;
3508 priv->timestamp = le64_to_cpu(timestamp) + (priv->beacon_int * 1000);
3509
3510 IWL_DEBUG_MAC80211("leave\n");
3511 spin_unlock_irqrestore(&priv->lock, flags);
3512
3513 iwl_reset_qos(priv);
3514
3515 iwl4965_post_associate(priv);
3516
3517 mutex_unlock(&priv->mutex);
3518
3519 return 0;
3520 }
3521
3522 /*****************************************************************************
3523 *
3524 * sysfs attributes
3525 *
3526 *****************************************************************************/
3527
3528 #ifdef CONFIG_IWLWIFI_DEBUG
3529
3530 /*
3531 * The following adds a new attribute to the sysfs representation
3532 * of this device driver (i.e. a new file in /sys/bus/pci/drivers/iwl/)
3533 * used for controlling the debug level.
3534 *
3535 * See the level definitions in iwl for details.
3536 */
3537
3538 static ssize_t show_debug_level(struct device *d,
3539 struct device_attribute *attr, char *buf)
3540 {
3541 struct iwl_priv *priv = d->driver_data;
3542
3543 return sprintf(buf, "0x%08X\n", priv->debug_level);
3544 }
3545 static ssize_t store_debug_level(struct device *d,
3546 struct device_attribute *attr,
3547 const char *buf, size_t count)
3548 {
3549 struct iwl_priv *priv = d->driver_data;
3550 char *p = (char *)buf;
3551 u32 val;
3552
3553 val = simple_strtoul(p, &p, 0);
3554 if (p == buf)
3555 printk(KERN_INFO DRV_NAME
3556 ": %s is not in hex or decimal form.\n", buf);
3557 else
3558 priv->debug_level = val;
3559
3560 return strnlen(buf, count);
3561 }
3562
3563 static DEVICE_ATTR(debug_level, S_IWUSR | S_IRUGO,
3564 show_debug_level, store_debug_level);
3565
3566
3567 #endif /* CONFIG_IWLWIFI_DEBUG */
3568
3569
3570 static ssize_t show_version(struct device *d,
3571 struct device_attribute *attr, char *buf)
3572 {
3573 struct iwl_priv *priv = d->driver_data;
3574 struct iwl_alive_resp *palive = &priv->card_alive;
3575 ssize_t pos = 0;
3576 u16 eeprom_ver;
3577
3578 if (palive->is_valid)
3579 pos += sprintf(buf + pos,
3580 "fw version: 0x%01X.0x%01X.0x%01X.0x%01X\n"
3581 "fw type: 0x%01X 0x%01X\n",
3582 palive->ucode_major, palive->ucode_minor,
3583 palive->sw_rev[0], palive->sw_rev[1],
3584 palive->ver_type, palive->ver_subtype);
3585 else
3586 pos += sprintf(buf + pos, "fw not loaded\n");
3587
3588 if (priv->eeprom) {
3589 eeprom_ver = iwl_eeprom_query16(priv, EEPROM_VERSION);
3590 pos += sprintf(buf + pos, "EEPROM version: 0x%x\n",
3591 eeprom_ver);
3592 } else {
3593 pos += sprintf(buf + pos, "EEPROM not initialzed\n");
3594 }
3595
3596 return pos;
3597 }
3598
3599 static DEVICE_ATTR(version, S_IWUSR | S_IRUGO, show_version, NULL);
3600
3601 static ssize_t show_temperature(struct device *d,
3602 struct device_attribute *attr, char *buf)
3603 {
3604 struct iwl_priv *priv = (struct iwl_priv *)d->driver_data;
3605
3606 if (!iwl_is_alive(priv))
3607 return -EAGAIN;
3608
3609 return sprintf(buf, "%d\n", priv->temperature);
3610 }
3611
3612 static DEVICE_ATTR(temperature, S_IRUGO, show_temperature, NULL);
3613
3614 static ssize_t show_rs_window(struct device *d,
3615 struct device_attribute *attr,
3616 char *buf)
3617 {
3618 struct iwl_priv *priv = d->driver_data;
3619 return iwl4965_fill_rs_info(priv->hw, buf, IWL_AP_ID);
3620 }
3621 static DEVICE_ATTR(rs_window, S_IRUGO, show_rs_window, NULL);
3622
3623 static ssize_t show_tx_power(struct device *d,
3624 struct device_attribute *attr, char *buf)
3625 {
3626 struct iwl_priv *priv = (struct iwl_priv *)d->driver_data;
3627 return sprintf(buf, "%d\n", priv->tx_power_user_lmt);
3628 }
3629
3630 static ssize_t store_tx_power(struct device *d,
3631 struct device_attribute *attr,
3632 const char *buf, size_t count)
3633 {
3634 struct iwl_priv *priv = (struct iwl_priv *)d->driver_data;
3635 char *p = (char *)buf;
3636 u32 val;
3637
3638 val = simple_strtoul(p, &p, 10);
3639 if (p == buf)
3640 printk(KERN_INFO DRV_NAME
3641 ": %s is not in decimal form.\n", buf);
3642 else
3643 iwl_set_tx_power(priv, val, false);
3644
3645 return count;
3646 }
3647
3648 static DEVICE_ATTR(tx_power, S_IWUSR | S_IRUGO, show_tx_power, store_tx_power);
3649
3650 static ssize_t show_flags(struct device *d,
3651 struct device_attribute *attr, char *buf)
3652 {
3653 struct iwl_priv *priv = (struct iwl_priv *)d->driver_data;
3654
3655 return sprintf(buf, "0x%04X\n", priv->active_rxon.flags);
3656 }
3657
3658 static ssize_t store_flags(struct device *d,
3659 struct device_attribute *attr,
3660 const char *buf, size_t count)
3661 {
3662 struct iwl_priv *priv = (struct iwl_priv *)d->driver_data;
3663 u32 flags = simple_strtoul(buf, NULL, 0);
3664
3665 mutex_lock(&priv->mutex);
3666 if (le32_to_cpu(priv->staging_rxon.flags) != flags) {
3667 /* Cancel any currently running scans... */
3668 if (iwl_scan_cancel_timeout(priv, 100))
3669 IWL_WARNING("Could not cancel scan.\n");
3670 else {
3671 IWL_DEBUG_INFO("Committing rxon.flags = 0x%04X\n",
3672 flags);
3673 priv->staging_rxon.flags = cpu_to_le32(flags);
3674 iwl4965_commit_rxon(priv);
3675 }
3676 }
3677 mutex_unlock(&priv->mutex);
3678
3679 return count;
3680 }
3681
3682 static DEVICE_ATTR(flags, S_IWUSR | S_IRUGO, show_flags, store_flags);
3683
3684 static ssize_t show_filter_flags(struct device *d,
3685 struct device_attribute *attr, char *buf)
3686 {
3687 struct iwl_priv *priv = (struct iwl_priv *)d->driver_data;
3688
3689 return sprintf(buf, "0x%04X\n",
3690 le32_to_cpu(priv->active_rxon.filter_flags));
3691 }
3692
3693 static ssize_t store_filter_flags(struct device *d,
3694 struct device_attribute *attr,
3695 const char *buf, size_t count)
3696 {
3697 struct iwl_priv *priv = (struct iwl_priv *)d->driver_data;
3698 u32 filter_flags = simple_strtoul(buf, NULL, 0);
3699
3700 mutex_lock(&priv->mutex);
3701 if (le32_to_cpu(priv->staging_rxon.filter_flags) != filter_flags) {
3702 /* Cancel any currently running scans... */
3703 if (iwl_scan_cancel_timeout(priv, 100))
3704 IWL_WARNING("Could not cancel scan.\n");
3705 else {
3706 IWL_DEBUG_INFO("Committing rxon.filter_flags = "
3707 "0x%04X\n", filter_flags);
3708 priv->staging_rxon.filter_flags =
3709 cpu_to_le32(filter_flags);
3710 iwl4965_commit_rxon(priv);
3711 }
3712 }
3713 mutex_unlock(&priv->mutex);
3714
3715 return count;
3716 }
3717
3718 static DEVICE_ATTR(filter_flags, S_IWUSR | S_IRUGO, show_filter_flags,
3719 store_filter_flags);
3720
3721 #ifdef CONFIG_IWL4965_SPECTRUM_MEASUREMENT
3722
3723 static ssize_t show_measurement(struct device *d,
3724 struct device_attribute *attr, char *buf)
3725 {
3726 struct iwl_priv *priv = dev_get_drvdata(d);
3727 struct iwl4965_spectrum_notification measure_report;
3728 u32 size = sizeof(measure_report), len = 0, ofs = 0;
3729 u8 *data = (u8 *) & measure_report;
3730 unsigned long flags;
3731
3732 spin_lock_irqsave(&priv->lock, flags);
3733 if (!(priv->measurement_status & MEASUREMENT_READY)) {
3734 spin_unlock_irqrestore(&priv->lock, flags);
3735 return 0;
3736 }
3737 memcpy(&measure_report, &priv->measure_report, size);
3738 priv->measurement_status = 0;
3739 spin_unlock_irqrestore(&priv->lock, flags);
3740
3741 while (size && (PAGE_SIZE - len)) {
3742 hex_dump_to_buffer(data + ofs, size, 16, 1, buf + len,
3743 PAGE_SIZE - len, 1);
3744 len = strlen(buf);
3745 if (PAGE_SIZE - len)
3746 buf[len++] = '\n';
3747
3748 ofs += 16;
3749 size -= min(size, 16U);
3750 }
3751
3752 return len;
3753 }
3754
3755 static ssize_t store_measurement(struct device *d,
3756 struct device_attribute *attr,
3757 const char *buf, size_t count)
3758 {
3759 struct iwl_priv *priv = dev_get_drvdata(d);
3760 struct ieee80211_measurement_params params = {
3761 .channel = le16_to_cpu(priv->active_rxon.channel),
3762 .start_time = cpu_to_le64(priv->last_tsf),
3763 .duration = cpu_to_le16(1),
3764 };
3765 u8 type = IWL_MEASURE_BASIC;
3766 u8 buffer[32];
3767 u8 channel;
3768
3769 if (count) {
3770 char *p = buffer;
3771 strncpy(buffer, buf, min(sizeof(buffer), count));
3772 channel = simple_strtoul(p, NULL, 0);
3773 if (channel)
3774 params.channel = channel;
3775
3776 p = buffer;
3777 while (*p && *p != ' ')
3778 p++;
3779 if (*p)
3780 type = simple_strtoul(p + 1, NULL, 0);
3781 }
3782
3783 IWL_DEBUG_INFO("Invoking measurement of type %d on "
3784 "channel %d (for '%s')\n", type, params.channel, buf);
3785 iwl4965_get_measurement(priv, &params, type);
3786
3787 return count;
3788 }
3789
3790 static DEVICE_ATTR(measurement, S_IRUSR | S_IWUSR,
3791 show_measurement, store_measurement);
3792 #endif /* CONFIG_IWL4965_SPECTRUM_MEASUREMENT */
3793
3794 static ssize_t store_retry_rate(struct device *d,
3795 struct device_attribute *attr,
3796 const char *buf, size_t count)
3797 {
3798 struct iwl_priv *priv = dev_get_drvdata(d);
3799
3800 priv->retry_rate = simple_strtoul(buf, NULL, 0);
3801 if (priv->retry_rate <= 0)
3802 priv->retry_rate = 1;
3803
3804 return count;
3805 }
3806
3807 static ssize_t show_retry_rate(struct device *d,
3808 struct device_attribute *attr, char *buf)
3809 {
3810 struct iwl_priv *priv = dev_get_drvdata(d);
3811 return sprintf(buf, "%d", priv->retry_rate);
3812 }
3813
3814 static DEVICE_ATTR(retry_rate, S_IWUSR | S_IRUSR, show_retry_rate,
3815 store_retry_rate);
3816
3817 static ssize_t store_power_level(struct device *d,
3818 struct device_attribute *attr,
3819 const char *buf, size_t count)
3820 {
3821 struct iwl_priv *priv = dev_get_drvdata(d);
3822 int rc;
3823 int mode;
3824
3825 mode = simple_strtoul(buf, NULL, 0);
3826 mutex_lock(&priv->mutex);
3827
3828 if (!iwl_is_ready(priv)) {
3829 rc = -EAGAIN;
3830 goto out;
3831 }
3832
3833 rc = iwl_power_set_user_mode(priv, mode);
3834 if (rc) {
3835 IWL_DEBUG_MAC80211("failed setting power mode.\n");
3836 goto out;
3837 }
3838 rc = count;
3839
3840 out:
3841 mutex_unlock(&priv->mutex);
3842 return rc;
3843 }
3844
3845 #define MAX_WX_STRING 80
3846
3847 /* Values are in microsecond */
3848 static const s32 timeout_duration[] = {
3849 350000,
3850 250000,
3851 75000,
3852 37000,
3853 25000,
3854 };
3855 static const s32 period_duration[] = {
3856 400000,
3857 700000,
3858 1000000,
3859 1000000,
3860 1000000
3861 };
3862
3863 static ssize_t show_power_level(struct device *d,
3864 struct device_attribute *attr, char *buf)
3865 {
3866 struct iwl_priv *priv = dev_get_drvdata(d);
3867 int level = priv->power_data.power_mode;
3868 char *p = buf;
3869
3870 p += sprintf(p, "%d ", level);
3871 switch (level) {
3872 case IWL_POWER_MODE_CAM:
3873 case IWL_POWER_AC:
3874 p += sprintf(p, "(AC)");
3875 break;
3876 case IWL_POWER_BATTERY:
3877 p += sprintf(p, "(BATTERY)");
3878 break;
3879 default:
3880 p += sprintf(p,
3881 "(Timeout %dms, Period %dms)",
3882 timeout_duration[level - 1] / 1000,
3883 period_duration[level - 1] / 1000);
3884 }
3885 /*
3886 if (!(priv->power_mode & IWL_POWER_ENABLED))
3887 p += sprintf(p, " OFF\n");
3888 else
3889 p += sprintf(p, " \n");
3890 */
3891 p += sprintf(p, " \n");
3892 return (p - buf + 1);
3893 }
3894
3895 static DEVICE_ATTR(power_level, S_IWUSR | S_IRUSR, show_power_level,
3896 store_power_level);
3897
3898 static ssize_t show_channels(struct device *d,
3899 struct device_attribute *attr, char *buf)
3900 {
3901
3902 struct iwl_priv *priv = dev_get_drvdata(d);
3903 struct ieee80211_channel *channels = NULL;
3904 const struct ieee80211_supported_band *supp_band = NULL;
3905 int len = 0, i;
3906 int count = 0;
3907
3908 if (!test_bit(STATUS_GEO_CONFIGURED, &priv->status))
3909 return -EAGAIN;
3910
3911 supp_band = iwl_get_hw_mode(priv, IEEE80211_BAND_2GHZ);
3912 channels = supp_band->channels;
3913 count = supp_band->n_channels;
3914
3915 len += sprintf(&buf[len],
3916 "Displaying %d channels in 2.4GHz band "
3917 "(802.11bg):\n", count);
3918
3919 for (i = 0; i < count; i++)
3920 len += sprintf(&buf[len], "%d: %ddBm: BSS%s%s, %s.\n",
3921 ieee80211_frequency_to_channel(
3922 channels[i].center_freq),
3923 channels[i].max_power,
3924 channels[i].flags & IEEE80211_CHAN_RADAR ?
3925 " (IEEE 802.11h required)" : "",
3926 (!(channels[i].flags & IEEE80211_CHAN_NO_IBSS)
3927 || (channels[i].flags &
3928 IEEE80211_CHAN_RADAR)) ? "" :
3929 ", IBSS",
3930 channels[i].flags &
3931 IEEE80211_CHAN_PASSIVE_SCAN ?
3932 "passive only" : "active/passive");
3933
3934 supp_band = iwl_get_hw_mode(priv, IEEE80211_BAND_5GHZ);
3935 channels = supp_band->channels;
3936 count = supp_band->n_channels;
3937
3938 len += sprintf(&buf[len], "Displaying %d channels in 5.2GHz band "
3939 "(802.11a):\n", count);
3940
3941 for (i = 0; i < count; i++)
3942 len += sprintf(&buf[len], "%d: %ddBm: BSS%s%s, %s.\n",
3943 ieee80211_frequency_to_channel(
3944 channels[i].center_freq),
3945 channels[i].max_power,
3946 channels[i].flags & IEEE80211_CHAN_RADAR ?
3947 " (IEEE 802.11h required)" : "",
3948 ((channels[i].flags & IEEE80211_CHAN_NO_IBSS)
3949 || (channels[i].flags &
3950 IEEE80211_CHAN_RADAR)) ? "" :
3951 ", IBSS",
3952 channels[i].flags &
3953 IEEE80211_CHAN_PASSIVE_SCAN ?
3954 "passive only" : "active/passive");
3955
3956 return len;
3957 }
3958
3959 static DEVICE_ATTR(channels, S_IRUSR, show_channels, NULL);
3960
3961 static ssize_t show_statistics(struct device *d,
3962 struct device_attribute *attr, char *buf)
3963 {
3964 struct iwl_priv *priv = dev_get_drvdata(d);
3965 u32 size = sizeof(struct iwl_notif_statistics);
3966 u32 len = 0, ofs = 0;
3967 u8 *data = (u8 *) & priv->statistics;
3968 int rc = 0;
3969
3970 if (!iwl_is_alive(priv))
3971 return -EAGAIN;
3972
3973 mutex_lock(&priv->mutex);
3974 rc = iwl_send_statistics_request(priv, 0);
3975 mutex_unlock(&priv->mutex);
3976
3977 if (rc) {
3978 len = sprintf(buf,
3979 "Error sending statistics request: 0x%08X\n", rc);
3980 return len;
3981 }
3982
3983 while (size && (PAGE_SIZE - len)) {
3984 hex_dump_to_buffer(data + ofs, size, 16, 1, buf + len,
3985 PAGE_SIZE - len, 1);
3986 len = strlen(buf);
3987 if (PAGE_SIZE - len)
3988 buf[len++] = '\n';
3989
3990 ofs += 16;
3991 size -= min(size, 16U);
3992 }
3993
3994 return len;
3995 }
3996
3997 static DEVICE_ATTR(statistics, S_IRUGO, show_statistics, NULL);
3998
3999 static ssize_t show_status(struct device *d,
4000 struct device_attribute *attr, char *buf)
4001 {
4002 struct iwl_priv *priv = (struct iwl_priv *)d->driver_data;
4003 if (!iwl_is_alive(priv))
4004 return -EAGAIN;
4005 return sprintf(buf, "0x%08x\n", (int)priv->status);
4006 }
4007
4008 static DEVICE_ATTR(status, S_IRUGO, show_status, NULL);
4009
4010 /*****************************************************************************
4011 *
4012 * driver setup and teardown
4013 *
4014 *****************************************************************************/
4015
4016 static void iwl_setup_deferred_work(struct iwl_priv *priv)
4017 {
4018 priv->workqueue = create_workqueue(DRV_NAME);
4019
4020 init_waitqueue_head(&priv->wait_command_queue);
4021
4022 INIT_WORK(&priv->up, iwl4965_bg_up);
4023 INIT_WORK(&priv->restart, iwl4965_bg_restart);
4024 INIT_WORK(&priv->rx_replenish, iwl4965_bg_rx_replenish);
4025 INIT_WORK(&priv->rf_kill, iwl4965_bg_rf_kill);
4026 INIT_WORK(&priv->beacon_update, iwl4965_bg_beacon_update);
4027 INIT_WORK(&priv->set_monitor, iwl4965_bg_set_monitor);
4028 INIT_WORK(&priv->run_time_calib_work, iwl_bg_run_time_calib_work);
4029 INIT_DELAYED_WORK(&priv->post_associate, iwl4965_bg_post_associate);
4030 INIT_DELAYED_WORK(&priv->init_alive_start, iwl_bg_init_alive_start);
4031 INIT_DELAYED_WORK(&priv->alive_start, iwl_bg_alive_start);
4032
4033 /* FIXME : remove when resolved PENDING */
4034 INIT_WORK(&priv->scan_completed, iwl_bg_scan_completed);
4035 iwl_setup_scan_deferred_work(priv);
4036
4037 if (priv->cfg->ops->lib->setup_deferred_work)
4038 priv->cfg->ops->lib->setup_deferred_work(priv);
4039
4040 init_timer(&priv->statistics_periodic);
4041 priv->statistics_periodic.data = (unsigned long)priv;
4042 priv->statistics_periodic.function = iwl4965_bg_statistics_periodic;
4043
4044 tasklet_init(&priv->irq_tasklet, (void (*)(unsigned long))
4045 iwl4965_irq_tasklet, (unsigned long)priv);
4046 }
4047
4048 static void iwl_cancel_deferred_work(struct iwl_priv *priv)
4049 {
4050 if (priv->cfg->ops->lib->cancel_deferred_work)
4051 priv->cfg->ops->lib->cancel_deferred_work(priv);
4052
4053 cancel_delayed_work_sync(&priv->init_alive_start);
4054 cancel_delayed_work(&priv->scan_check);
4055 cancel_delayed_work(&priv->alive_start);
4056 cancel_delayed_work(&priv->post_associate);
4057 cancel_work_sync(&priv->beacon_update);
4058 del_timer_sync(&priv->statistics_periodic);
4059 }
4060
4061 static struct attribute *iwl4965_sysfs_entries[] = {
4062 &dev_attr_channels.attr,
4063 &dev_attr_flags.attr,
4064 &dev_attr_filter_flags.attr,
4065 #ifdef CONFIG_IWL4965_SPECTRUM_MEASUREMENT
4066 &dev_attr_measurement.attr,
4067 #endif
4068 &dev_attr_power_level.attr,
4069 &dev_attr_retry_rate.attr,
4070 &dev_attr_rs_window.attr,
4071 &dev_attr_statistics.attr,
4072 &dev_attr_status.attr,
4073 &dev_attr_temperature.attr,
4074 &dev_attr_tx_power.attr,
4075 #ifdef CONFIG_IWLWIFI_DEBUG
4076 &dev_attr_debug_level.attr,
4077 #endif
4078 &dev_attr_version.attr,
4079
4080 NULL
4081 };
4082
4083 static struct attribute_group iwl4965_attribute_group = {
4084 .name = NULL, /* put in device directory */
4085 .attrs = iwl4965_sysfs_entries,
4086 };
4087
4088 static struct ieee80211_ops iwl4965_hw_ops = {
4089 .tx = iwl4965_mac_tx,
4090 .start = iwl4965_mac_start,
4091 .stop = iwl4965_mac_stop,
4092 .add_interface = iwl4965_mac_add_interface,
4093 .remove_interface = iwl4965_mac_remove_interface,
4094 .config = iwl4965_mac_config,
4095 .config_interface = iwl4965_mac_config_interface,
4096 .configure_filter = iwl4965_configure_filter,
4097 .set_key = iwl4965_mac_set_key,
4098 .update_tkip_key = iwl4965_mac_update_tkip_key,
4099 .get_stats = iwl4965_mac_get_stats,
4100 .get_tx_stats = iwl4965_mac_get_tx_stats,
4101 .conf_tx = iwl4965_mac_conf_tx,
4102 .reset_tsf = iwl4965_mac_reset_tsf,
4103 .beacon_update = iwl4965_mac_beacon_update,
4104 .bss_info_changed = iwl4965_bss_info_changed,
4105 .ampdu_action = iwl4965_mac_ampdu_action,
4106 .hw_scan = iwl4965_mac_hw_scan
4107 };
4108
4109 static int iwl4965_pci_probe(struct pci_dev *pdev, const struct pci_device_id *ent)
4110 {
4111 int err = 0;
4112 struct iwl_priv *priv;
4113 struct ieee80211_hw *hw;
4114 struct iwl_cfg *cfg = (struct iwl_cfg *)(ent->driver_data);
4115 unsigned long flags;
4116 DECLARE_MAC_BUF(mac);
4117
4118 /************************
4119 * 1. Allocating HW data
4120 ************************/
4121
4122 /* Disabling hardware scan means that mac80211 will perform scans
4123 * "the hard way", rather than using device's scan. */
4124 if (cfg->mod_params->disable_hw_scan) {
4125 if (cfg->mod_params->debug & IWL_DL_INFO)
4126 dev_printk(KERN_DEBUG, &(pdev->dev),
4127 "Disabling hw_scan\n");
4128 iwl4965_hw_ops.hw_scan = NULL;
4129 }
4130
4131 hw = iwl_alloc_all(cfg, &iwl4965_hw_ops);
4132 if (!hw) {
4133 err = -ENOMEM;
4134 goto out;
4135 }
4136 priv = hw->priv;
4137 /* At this point both hw and priv are allocated. */
4138
4139 SET_IEEE80211_DEV(hw, &pdev->dev);
4140
4141 IWL_DEBUG_INFO("*** LOAD DRIVER ***\n");
4142 priv->cfg = cfg;
4143 priv->pci_dev = pdev;
4144
4145 #ifdef CONFIG_IWLWIFI_DEBUG
4146 priv->debug_level = priv->cfg->mod_params->debug;
4147 atomic_set(&priv->restrict_refcnt, 0);
4148 #endif
4149
4150 /**************************
4151 * 2. Initializing PCI bus
4152 **************************/
4153 if (pci_enable_device(pdev)) {
4154 err = -ENODEV;
4155 goto out_ieee80211_free_hw;
4156 }
4157
4158 pci_set_master(pdev);
4159
4160 err = pci_set_dma_mask(pdev, DMA_64BIT_MASK);
4161 if (!err)
4162 err = pci_set_consistent_dma_mask(pdev, DMA_64BIT_MASK);
4163 if (err) {
4164 err = pci_set_dma_mask(pdev, DMA_32BIT_MASK);
4165 if (!err)
4166 err = pci_set_consistent_dma_mask(pdev, DMA_32BIT_MASK);
4167 /* both attempts failed: */
4168 if (err) {
4169 printk(KERN_WARNING "%s: No suitable DMA available.\n",
4170 DRV_NAME);
4171 goto out_pci_disable_device;
4172 }
4173 }
4174
4175 err = pci_request_regions(pdev, DRV_NAME);
4176 if (err)
4177 goto out_pci_disable_device;
4178
4179 pci_set_drvdata(pdev, priv);
4180
4181 /* We disable the RETRY_TIMEOUT register (0x41) to keep
4182 * PCI Tx retries from interfering with C3 CPU state */
4183 pci_write_config_byte(pdev, 0x41, 0x00);
4184
4185 /***********************
4186 * 3. Read REV register
4187 ***********************/
4188 priv->hw_base = pci_iomap(pdev, 0, 0);
4189 if (!priv->hw_base) {
4190 err = -ENODEV;
4191 goto out_pci_release_regions;
4192 }
4193
4194 IWL_DEBUG_INFO("pci_resource_len = 0x%08llx\n",
4195 (unsigned long long) pci_resource_len(pdev, 0));
4196 IWL_DEBUG_INFO("pci_resource_base = %p\n", priv->hw_base);
4197
4198 iwl_hw_detect(priv);
4199 printk(KERN_INFO DRV_NAME
4200 ": Detected Intel Wireless WiFi Link %s REV=0x%X\n",
4201 priv->cfg->name, priv->hw_rev);
4202
4203 /* amp init */
4204 err = priv->cfg->ops->lib->apm_ops.init(priv);
4205 if (err < 0) {
4206 IWL_DEBUG_INFO("Failed to init APMG\n");
4207 goto out_iounmap;
4208 }
4209 /*****************
4210 * 4. Read EEPROM
4211 *****************/
4212 /* Read the EEPROM */
4213 err = iwl_eeprom_init(priv);
4214 if (err) {
4215 IWL_ERROR("Unable to init EEPROM\n");
4216 goto out_iounmap;
4217 }
4218 err = iwl_eeprom_check_version(priv);
4219 if (err)
4220 goto out_iounmap;
4221
4222 /* extract MAC Address */
4223 iwl_eeprom_get_mac(priv, priv->mac_addr);
4224 IWL_DEBUG_INFO("MAC address: %s\n", print_mac(mac, priv->mac_addr));
4225 SET_IEEE80211_PERM_ADDR(priv->hw, priv->mac_addr);
4226
4227 /************************
4228 * 5. Setup HW constants
4229 ************************/
4230 if (iwl_set_hw_params(priv)) {
4231 IWL_ERROR("failed to set hw parameters\n");
4232 goto out_free_eeprom;
4233 }
4234
4235 /*******************
4236 * 6. Setup priv
4237 *******************/
4238
4239 err = iwl_init_drv(priv);
4240 if (err)
4241 goto out_free_eeprom;
4242 /* At this point both hw and priv are initialized. */
4243
4244 /**********************************
4245 * 7. Initialize module parameters
4246 **********************************/
4247
4248 /* Disable radio (SW RF KILL) via parameter when loading driver */
4249 if (priv->cfg->mod_params->disable) {
4250 set_bit(STATUS_RF_KILL_SW, &priv->status);
4251 IWL_DEBUG_INFO("Radio disabled.\n");
4252 }
4253
4254 /********************
4255 * 8. Setup services
4256 ********************/
4257 spin_lock_irqsave(&priv->lock, flags);
4258 iwl4965_disable_interrupts(priv);
4259 spin_unlock_irqrestore(&priv->lock, flags);
4260
4261 err = sysfs_create_group(&pdev->dev.kobj, &iwl4965_attribute_group);
4262 if (err) {
4263 IWL_ERROR("failed to create sysfs device attributes\n");
4264 goto out_uninit_drv;
4265 }
4266
4267
4268 iwl_setup_deferred_work(priv);
4269 iwl_setup_rx_handlers(priv);
4270
4271 /********************
4272 * 9. Conclude
4273 ********************/
4274 pci_save_state(pdev);
4275 pci_disable_device(pdev);
4276
4277 /**********************************
4278 * 10. Setup and register mac80211
4279 **********************************/
4280
4281 err = iwl_setup_mac(priv);
4282 if (err)
4283 goto out_remove_sysfs;
4284
4285 err = iwl_dbgfs_register(priv, DRV_NAME);
4286 if (err)
4287 IWL_ERROR("failed to create debugfs files\n");
4288
4289 err = iwl_rfkill_init(priv);
4290 if (err)
4291 IWL_ERROR("Unable to initialize RFKILL system. "
4292 "Ignoring error: %d\n", err);
4293 iwl_power_initialize(priv);
4294 return 0;
4295
4296 out_remove_sysfs:
4297 sysfs_remove_group(&pdev->dev.kobj, &iwl4965_attribute_group);
4298 out_uninit_drv:
4299 iwl_uninit_drv(priv);
4300 out_free_eeprom:
4301 iwl_eeprom_free(priv);
4302 out_iounmap:
4303 pci_iounmap(pdev, priv->hw_base);
4304 out_pci_release_regions:
4305 pci_release_regions(pdev);
4306 pci_set_drvdata(pdev, NULL);
4307 out_pci_disable_device:
4308 pci_disable_device(pdev);
4309 out_ieee80211_free_hw:
4310 ieee80211_free_hw(priv->hw);
4311 out:
4312 return err;
4313 }
4314
4315 static void __devexit iwl4965_pci_remove(struct pci_dev *pdev)
4316 {
4317 struct iwl_priv *priv = pci_get_drvdata(pdev);
4318 unsigned long flags;
4319
4320 if (!priv)
4321 return;
4322
4323 IWL_DEBUG_INFO("*** UNLOAD DRIVER ***\n");
4324
4325 iwl_dbgfs_unregister(priv);
4326 sysfs_remove_group(&pdev->dev.kobj, &iwl4965_attribute_group);
4327
4328 if (priv->mac80211_registered) {
4329 ieee80211_unregister_hw(priv->hw);
4330 priv->mac80211_registered = 0;
4331 }
4332
4333 set_bit(STATUS_EXIT_PENDING, &priv->status);
4334
4335 iwl4965_down(priv);
4336
4337 /* make sure we flush any pending irq or
4338 * tasklet for the driver
4339 */
4340 spin_lock_irqsave(&priv->lock, flags);
4341 iwl4965_disable_interrupts(priv);
4342 spin_unlock_irqrestore(&priv->lock, flags);
4343
4344 iwl_synchronize_irq(priv);
4345
4346 iwl_rfkill_unregister(priv);
4347 iwl4965_dealloc_ucode_pci(priv);
4348
4349 if (priv->rxq.bd)
4350 iwl_rx_queue_free(priv, &priv->rxq);
4351 iwl_hw_txq_ctx_free(priv);
4352
4353 iwl_clear_stations_table(priv);
4354 iwl_eeprom_free(priv);
4355
4356
4357 /*netif_stop_queue(dev); */
4358 flush_workqueue(priv->workqueue);
4359
4360 /* ieee80211_unregister_hw calls iwl4965_mac_stop, which flushes
4361 * priv->workqueue... so we can't take down the workqueue
4362 * until now... */
4363 destroy_workqueue(priv->workqueue);
4364 priv->workqueue = NULL;
4365
4366 pci_iounmap(pdev, priv->hw_base);
4367 pci_release_regions(pdev);
4368 pci_disable_device(pdev);
4369 pci_set_drvdata(pdev, NULL);
4370
4371 iwl_uninit_drv(priv);
4372
4373 if (priv->ibss_beacon)
4374 dev_kfree_skb(priv->ibss_beacon);
4375
4376 ieee80211_free_hw(priv->hw);
4377 }
4378
4379 #ifdef CONFIG_PM
4380
4381 static int iwl4965_pci_suspend(struct pci_dev *pdev, pm_message_t state)
4382 {
4383 struct iwl_priv *priv = pci_get_drvdata(pdev);
4384
4385 if (priv->is_open) {
4386 set_bit(STATUS_IN_SUSPEND, &priv->status);
4387 iwl4965_mac_stop(priv->hw);
4388 priv->is_open = 1;
4389 }
4390
4391 pci_set_power_state(pdev, PCI_D3hot);
4392
4393 return 0;
4394 }
4395
4396 static int iwl4965_pci_resume(struct pci_dev *pdev)
4397 {
4398 struct iwl_priv *priv = pci_get_drvdata(pdev);
4399
4400 pci_set_power_state(pdev, PCI_D0);
4401
4402 if (priv->is_open)
4403 iwl4965_mac_start(priv->hw);
4404
4405 clear_bit(STATUS_IN_SUSPEND, &priv->status);
4406 return 0;
4407 }
4408
4409 #endif /* CONFIG_PM */
4410
4411 /*****************************************************************************
4412 *
4413 * driver and module entry point
4414 *
4415 *****************************************************************************/
4416
4417 /* Hardware specific file defines the PCI IDs table for that hardware module */
4418 static struct pci_device_id iwl_hw_card_ids[] = {
4419 {IWL_PCI_DEVICE(0x4229, PCI_ANY_ID, iwl4965_agn_cfg)},
4420 {IWL_PCI_DEVICE(0x4230, PCI_ANY_ID, iwl4965_agn_cfg)},
4421 #ifdef CONFIG_IWL5000
4422 {IWL_PCI_DEVICE(0x4235, PCI_ANY_ID, iwl5300_agn_cfg)},
4423 {IWL_PCI_DEVICE(0x4232, PCI_ANY_ID, iwl5100_agn_cfg)},
4424 {IWL_PCI_DEVICE(0x423A, PCI_ANY_ID, iwl5350_agn_cfg)},
4425 #endif /* CONFIG_IWL5000 */
4426 {0}
4427 };
4428 MODULE_DEVICE_TABLE(pci, iwl_hw_card_ids);
4429
4430 static struct pci_driver iwl_driver = {
4431 .name = DRV_NAME,
4432 .id_table = iwl_hw_card_ids,
4433 .probe = iwl4965_pci_probe,
4434 .remove = __devexit_p(iwl4965_pci_remove),
4435 #ifdef CONFIG_PM
4436 .suspend = iwl4965_pci_suspend,
4437 .resume = iwl4965_pci_resume,
4438 #endif
4439 };
4440
4441 static int __init iwl4965_init(void)
4442 {
4443
4444 int ret;
4445 printk(KERN_INFO DRV_NAME ": " DRV_DESCRIPTION ", " DRV_VERSION "\n");
4446 printk(KERN_INFO DRV_NAME ": " DRV_COPYRIGHT "\n");
4447
4448 ret = iwl4965_rate_control_register();
4449 if (ret) {
4450 IWL_ERROR("Unable to register rate control algorithm: %d\n", ret);
4451 return ret;
4452 }
4453
4454 ret = pci_register_driver(&iwl_driver);
4455 if (ret) {
4456 IWL_ERROR("Unable to initialize PCI module\n");
4457 goto error_register;
4458 }
4459
4460 return ret;
4461
4462 error_register:
4463 iwl4965_rate_control_unregister();
4464 return ret;
4465 }
4466
4467 static void __exit iwl4965_exit(void)
4468 {
4469 pci_unregister_driver(&iwl_driver);
4470 iwl4965_rate_control_unregister();
4471 }
4472
4473 module_exit(iwl4965_exit);
4474 module_init(iwl4965_init);
Linux 2.6 ibm-acpi/thinkpad-acpi driver git tree