?  search:
summary | log | graphiclog1 | graphiclog2 | commit | commitdiff | tree | refs | edit | fork
blame | history | raw | HEAD
iwlwifi: fix incorrect monitor mode operation
[linux-2.6/linux-acpi-2.6/ibm-acpi-2.6.git] / drivers / net / wireless / iwlwifi / iwl4965-base.c
blobba0f28945eb1f37c11241867545030a16dd676fb
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->active_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 iwl4965_connection_init_rx_config(priv);
798 memcpy(priv->staging_rxon.node_addr, priv->mac_addr, ETH_ALEN);
799
800 iwl_clear_stations_table(priv);
801
802 /* dont commit rxon if rf-kill is on*/
803 if (!iwl_is_ready_rf(priv))
804 return -EAGAIN;
805
806 cancel_delayed_work(&priv->scan_check);
807 if (iwl_scan_cancel_timeout(priv, 100)) {
808 IWL_WARNING("Aborted scan still in progress after 100ms\n");
809 IWL_DEBUG_MAC80211("leaving - scan abort failed.\n");
810 return -EAGAIN;
811 }
812
813 iwl4965_commit_rxon(priv);
814
815 return 0;
816 }
817
818 static void iwl4965_set_rate(struct iwl_priv *priv)
819 {
820 const struct ieee80211_supported_band *hw = NULL;
821 struct ieee80211_rate *rate;
822 int i;
823
824 hw = iwl_get_hw_mode(priv, priv->band);
825 if (!hw) {
826 IWL_ERROR("Failed to set rate: unable to get hw mode\n");
827 return;
828 }
829
830 priv->active_rate = 0;
831 priv->active_rate_basic = 0;
832
833 for (i = 0; i < hw->n_bitrates; i++) {
834 rate = &(hw->bitrates[i]);
835 if (rate->hw_value < IWL_RATE_COUNT)
836 priv->active_rate |= (1 << rate->hw_value);
837 }
838
839 IWL_DEBUG_RATE("Set active_rate = %0x, active_rate_basic = %0x\n",
840 priv->active_rate, priv->active_rate_basic);
841
842 /*
843 * If a basic rate is configured, then use it (adding IWL_RATE_1M_MASK)
844 * otherwise set it to the default of all CCK rates and 6, 12, 24 for
845 * OFDM
846 */
847 if (priv->active_rate_basic & IWL_CCK_BASIC_RATES_MASK)
848 priv->staging_rxon.cck_basic_rates =
849 ((priv->active_rate_basic &
850 IWL_CCK_RATES_MASK) >> IWL_FIRST_CCK_RATE) & 0xF;
851 else
852 priv->staging_rxon.cck_basic_rates =
853 (IWL_CCK_BASIC_RATES_MASK >> IWL_FIRST_CCK_RATE) & 0xF;
854
855 if (priv->active_rate_basic & IWL_OFDM_BASIC_RATES_MASK)
856 priv->staging_rxon.ofdm_basic_rates =
857 ((priv->active_rate_basic &
858 (IWL_OFDM_BASIC_RATES_MASK | IWL_RATE_6M_MASK)) >>
859 IWL_FIRST_OFDM_RATE) & 0xFF;
860 else
861 priv->staging_rxon.ofdm_basic_rates =
862 (IWL_OFDM_BASIC_RATES_MASK >> IWL_FIRST_OFDM_RATE) & 0xFF;
863 }
864
865 #ifdef CONFIG_IWL4965_SPECTRUM_MEASUREMENT
866
867 #include "iwl-spectrum.h"
868
869 #define BEACON_TIME_MASK_LOW 0x00FFFFFF
870 #define BEACON_TIME_MASK_HIGH 0xFF000000
871 #define TIME_UNIT 1024
872
873 /*
874 * extended beacon time format
875 * time in usec will be changed into a 32-bit value in 8:24 format
876 * the high 1 byte is the beacon counts
877 * the lower 3 bytes is the time in usec within one beacon interval
878 */
879
880 static u32 iwl4965_usecs_to_beacons(u32 usec, u32 beacon_interval)
881 {
882 u32 quot;
883 u32 rem;
884 u32 interval = beacon_interval * 1024;
885
886 if (!interval || !usec)
887 return 0;
888
889 quot = (usec / interval) & (BEACON_TIME_MASK_HIGH >> 24);
890 rem = (usec % interval) & BEACON_TIME_MASK_LOW;
891
892 return (quot << 24) + rem;
893 }
894
895 /* base is usually what we get from ucode with each received frame,
896 * the same as HW timer counter counting down
897 */
898
899 static __le32 iwl4965_add_beacon_time(u32 base, u32 addon, u32 beacon_interval)
900 {
901 u32 base_low = base & BEACON_TIME_MASK_LOW;
902 u32 addon_low = addon & BEACON_TIME_MASK_LOW;
903 u32 interval = beacon_interval * TIME_UNIT;
904 u32 res = (base & BEACON_TIME_MASK_HIGH) +
905 (addon & BEACON_TIME_MASK_HIGH);
906
907 if (base_low > addon_low)
908 res += base_low - addon_low;
909 else if (base_low < addon_low) {
910 res += interval + base_low - addon_low;
911 res += (1 << 24);
912 } else
913 res += (1 << 24);
914
915 return cpu_to_le32(res);
916 }
917
918 static int iwl4965_get_measurement(struct iwl_priv *priv,
919 struct ieee80211_measurement_params *params,
920 u8 type)
921 {
922 struct iwl4965_spectrum_cmd spectrum;
923 struct iwl_rx_packet *res;
924 struct iwl_host_cmd cmd = {
925 .id = REPLY_SPECTRUM_MEASUREMENT_CMD,
926 .data = (void *)&spectrum,
927 .meta.flags = CMD_WANT_SKB,
928 };
929 u32 add_time = le64_to_cpu(params->start_time);
930 int rc;
931 int spectrum_resp_status;
932 int duration = le16_to_cpu(params->duration);
933
934 if (iwl_is_associated(priv))
935 add_time =
936 iwl4965_usecs_to_beacons(
937 le64_to_cpu(params->start_time) - priv->last_tsf,
938 le16_to_cpu(priv->rxon_timing.beacon_interval));
939
940 memset(&spectrum, 0, sizeof(spectrum));
941
942 spectrum.channel_count = cpu_to_le16(1);
943 spectrum.flags =
944 RXON_FLG_TSF2HOST_MSK | RXON_FLG_ANT_A_MSK | RXON_FLG_DIS_DIV_MSK;
945 spectrum.filter_flags = MEASUREMENT_FILTER_FLAG;
946 cmd.len = sizeof(spectrum);
947 spectrum.len = cpu_to_le16(cmd.len - sizeof(spectrum.len));
948
949 if (iwl_is_associated(priv))
950 spectrum.start_time =
951 iwl4965_add_beacon_time(priv->last_beacon_time,
952 add_time,
953 le16_to_cpu(priv->rxon_timing.beacon_interval));
954 else
955 spectrum.start_time = 0;
956
957 spectrum.channels[0].duration = cpu_to_le32(duration * TIME_UNIT);
958 spectrum.channels[0].channel = params->channel;
959 spectrum.channels[0].type = type;
960 if (priv->active_rxon.flags & RXON_FLG_BAND_24G_MSK)
961 spectrum.flags |= RXON_FLG_BAND_24G_MSK |
962 RXON_FLG_AUTO_DETECT_MSK | RXON_FLG_TGG_PROTECT_MSK;
963
964 rc = iwl_send_cmd_sync(priv, &cmd);
965 if (rc)
966 return rc;
967
968 res = (struct iwl_rx_packet *)cmd.meta.u.skb->data;
969 if (res->hdr.flags & IWL_CMD_FAILED_MSK) {
970 IWL_ERROR("Bad return from REPLY_RX_ON_ASSOC command\n");
971 rc = -EIO;
972 }
973
974 spectrum_resp_status = le16_to_cpu(res->u.spectrum.status);
975 switch (spectrum_resp_status) {
976 case 0: /* Command will be handled */
977 if (res->u.spectrum.id != 0xff) {
978 IWL_DEBUG_INFO
979 ("Replaced existing measurement: %d\n",
980 res->u.spectrum.id);
981 priv->measurement_status &= ~MEASUREMENT_READY;
982 }
983 priv->measurement_status |= MEASUREMENT_ACTIVE;
984 rc = 0;
985 break;
986
987 case 1: /* Command will not be handled */
988 rc = -EAGAIN;
989 break;
990 }
991
992 dev_kfree_skb_any(cmd.meta.u.skb);
993
994 return rc;
995 }
996 #endif
997
998 /******************************************************************************
999 *
1000 * Generic RX handler implementations
1001 *
1002 ******************************************************************************/
1003 static void iwl_rx_reply_alive(struct iwl_priv *priv,
1004 struct iwl_rx_mem_buffer *rxb)
1005 {
1006 struct iwl_rx_packet *pkt = (struct iwl_rx_packet *)rxb->skb->data;
1007 struct iwl_alive_resp *palive;
1008 struct delayed_work *pwork;
1009
1010 palive = &pkt->u.alive_frame;
1011
1012 IWL_DEBUG_INFO("Alive ucode status 0x%08X revision "
1013 "0x%01X 0x%01X\n",
1014 palive->is_valid, palive->ver_type,
1015 palive->ver_subtype);
1016
1017 if (palive->ver_subtype == INITIALIZE_SUBTYPE) {
1018 IWL_DEBUG_INFO("Initialization Alive received.\n");
1019 memcpy(&priv->card_alive_init,
1020 &pkt->u.alive_frame,
1021 sizeof(struct iwl_init_alive_resp));
1022 pwork = &priv->init_alive_start;
1023 } else {
1024 IWL_DEBUG_INFO("Runtime Alive received.\n");
1025 memcpy(&priv->card_alive, &pkt->u.alive_frame,
1026 sizeof(struct iwl_alive_resp));
1027 pwork = &priv->alive_start;
1028 }
1029
1030 /* We delay the ALIVE response by 5ms to
1031 * give the HW RF Kill time to activate... */
1032 if (palive->is_valid == UCODE_VALID_OK)
1033 queue_delayed_work(priv->workqueue, pwork,
1034 msecs_to_jiffies(5));
1035 else
1036 IWL_WARNING("uCode did not respond OK.\n");
1037 }
1038
1039 static void iwl4965_rx_reply_error(struct iwl_priv *priv,
1040 struct iwl_rx_mem_buffer *rxb)
1041 {
1042 struct iwl_rx_packet *pkt = (struct iwl_rx_packet *)rxb->skb->data;
1043
1044 IWL_ERROR("Error Reply type 0x%08X cmd %s (0x%02X) "
1045 "seq 0x%04X ser 0x%08X\n",
1046 le32_to_cpu(pkt->u.err_resp.error_type),
1047 get_cmd_string(pkt->u.err_resp.cmd_id),
1048 pkt->u.err_resp.cmd_id,
1049 le16_to_cpu(pkt->u.err_resp.bad_cmd_seq_num),
1050 le32_to_cpu(pkt->u.err_resp.error_info));
1051 }
1052
1053 #define TX_STATUS_ENTRY(x) case TX_STATUS_FAIL_ ## x: return #x
1054
1055 static void iwl4965_rx_csa(struct iwl_priv *priv, struct iwl_rx_mem_buffer *rxb)
1056 {
1057 struct iwl_rx_packet *pkt = (struct iwl_rx_packet *)rxb->skb->data;
1058 struct iwl_rxon_cmd *rxon = (void *)&priv->active_rxon;
1059 struct iwl4965_csa_notification *csa = &(pkt->u.csa_notif);
1060 IWL_DEBUG_11H("CSA notif: channel %d, status %d\n",
1061 le16_to_cpu(csa->channel), le32_to_cpu(csa->status));
1062 rxon->channel = csa->channel;
1063 priv->staging_rxon.channel = csa->channel;
1064 }
1065
1066 static void iwl4965_rx_spectrum_measure_notif(struct iwl_priv *priv,
1067 struct iwl_rx_mem_buffer *rxb)
1068 {
1069 #ifdef CONFIG_IWL4965_SPECTRUM_MEASUREMENT
1070 struct iwl_rx_packet *pkt = (struct iwl_rx_packet *)rxb->skb->data;
1071 struct iwl4965_spectrum_notification *report = &(pkt->u.spectrum_notif);
1072
1073 if (!report->state) {
1074 IWL_DEBUG(IWL_DL_11H,
1075 "Spectrum Measure Notification: Start\n");
1076 return;
1077 }
1078
1079 memcpy(&priv->measure_report, report, sizeof(*report));
1080 priv->measurement_status |= MEASUREMENT_READY;
1081 #endif
1082 }
1083
1084 static void iwl4965_rx_pm_sleep_notif(struct iwl_priv *priv,
1085 struct iwl_rx_mem_buffer *rxb)
1086 {
1087 #ifdef CONFIG_IWLWIFI_DEBUG
1088 struct iwl_rx_packet *pkt = (struct iwl_rx_packet *)rxb->skb->data;
1089 struct iwl4965_sleep_notification *sleep = &(pkt->u.sleep_notif);
1090 IWL_DEBUG_RX("sleep mode: %d, src: %d\n",
1091 sleep->pm_sleep_mode, sleep->pm_wakeup_src);
1092 #endif
1093 }
1094
1095 static void iwl4965_rx_pm_debug_statistics_notif(struct iwl_priv *priv,
1096 struct iwl_rx_mem_buffer *rxb)
1097 {
1098 struct iwl_rx_packet *pkt = (struct iwl_rx_packet *)rxb->skb->data;
1099 IWL_DEBUG_RADIO("Dumping %d bytes of unhandled "
1100 "notification for %s:\n",
1101 le32_to_cpu(pkt->len), get_cmd_string(pkt->hdr.cmd));
1102 iwl_print_hex_dump(priv, IWL_DL_RADIO, pkt->u.raw, le32_to_cpu(pkt->len));
1103 }
1104
1105 static void iwl4965_bg_beacon_update(struct work_struct *work)
1106 {
1107 struct iwl_priv *priv =
1108 container_of(work, struct iwl_priv, beacon_update);
1109 struct sk_buff *beacon;
1110
1111 /* Pull updated AP beacon from mac80211. will fail if not in AP mode */
1112 beacon = ieee80211_beacon_get(priv->hw, priv->vif);
1113
1114 if (!beacon) {
1115 IWL_ERROR("update beacon failed\n");
1116 return;
1117 }
1118
1119 mutex_lock(&priv->mutex);
1120 /* new beacon skb is allocated every time; dispose previous.*/
1121 if (priv->ibss_beacon)
1122 dev_kfree_skb(priv->ibss_beacon);
1123
1124 priv->ibss_beacon = beacon;
1125 mutex_unlock(&priv->mutex);
1126
1127 iwl4965_send_beacon_cmd(priv);
1128 }
1129
1130 /**
1131 * iwl4965_bg_statistics_periodic - Timer callback to queue statistics
1132 *
1133 * This callback is provided in order to send a statistics request.
1134 *
1135 * This timer function is continually reset to execute within
1136 * REG_RECALIB_PERIOD seconds since the last STATISTICS_NOTIFICATION
1137 * was received. We need to ensure we receive the statistics in order
1138 * to update the temperature used for calibrating the TXPOWER.
1139 */
1140 static void iwl4965_bg_statistics_periodic(unsigned long data)
1141 {
1142 struct iwl_priv *priv = (struct iwl_priv *)data;
1143
1144 if (test_bit(STATUS_EXIT_PENDING, &priv->status))
1145 return;
1146
1147 iwl_send_statistics_request(priv, CMD_ASYNC);
1148 }
1149
1150 static void iwl4965_rx_beacon_notif(struct iwl_priv *priv,
1151 struct iwl_rx_mem_buffer *rxb)
1152 {
1153 #ifdef CONFIG_IWLWIFI_DEBUG
1154 struct iwl_rx_packet *pkt = (struct iwl_rx_packet *)rxb->skb->data;
1155 struct iwl4965_beacon_notif *beacon = &(pkt->u.beacon_status);
1156 u8 rate = iwl_hw_get_rate(beacon->beacon_notify_hdr.rate_n_flags);
1157
1158 IWL_DEBUG_RX("beacon status %x retries %d iss %d "
1159 "tsf %d %d rate %d\n",
1160 le32_to_cpu(beacon->beacon_notify_hdr.u.status) & TX_STATUS_MSK,
1161 beacon->beacon_notify_hdr.failure_frame,
1162 le32_to_cpu(beacon->ibss_mgr_status),
1163 le32_to_cpu(beacon->high_tsf),
1164 le32_to_cpu(beacon->low_tsf), rate);
1165 #endif
1166
1167 if ((priv->iw_mode == IEEE80211_IF_TYPE_AP) &&
1168 (!test_bit(STATUS_EXIT_PENDING, &priv->status)))
1169 queue_work(priv->workqueue, &priv->beacon_update);
1170 }
1171
1172 /* Handle notification from uCode that card's power state is changing
1173 * due to software, hardware, or critical temperature RFKILL */
1174 static void iwl4965_rx_card_state_notif(struct iwl_priv *priv,
1175 struct iwl_rx_mem_buffer *rxb)
1176 {
1177 struct iwl_rx_packet *pkt = (struct iwl_rx_packet *)rxb->skb->data;
1178 u32 flags = le32_to_cpu(pkt->u.card_state_notif.flags);
1179 unsigned long status = priv->status;
1180
1181 IWL_DEBUG_RF_KILL("Card state received: HW:%s SW:%s\n",
1182 (flags & HW_CARD_DISABLED) ? "Kill" : "On",
1183 (flags & SW_CARD_DISABLED) ? "Kill" : "On");
1184
1185 if (flags & (SW_CARD_DISABLED | HW_CARD_DISABLED |
1186 RF_CARD_DISABLED)) {
1187
1188 iwl_write32(priv, CSR_UCODE_DRV_GP1_SET,
1189 CSR_UCODE_DRV_GP1_BIT_CMD_BLOCKED);
1190
1191 if (!iwl_grab_nic_access(priv)) {
1192 iwl_write_direct32(
1193 priv, HBUS_TARG_MBX_C,
1194 HBUS_TARG_MBX_C_REG_BIT_CMD_BLOCKED);
1195
1196 iwl_release_nic_access(priv);
1197 }
1198
1199 if (!(flags & RXON_CARD_DISABLED)) {
1200 iwl_write32(priv, CSR_UCODE_DRV_GP1_CLR,
1201 CSR_UCODE_DRV_GP1_BIT_CMD_BLOCKED);
1202 if (!iwl_grab_nic_access(priv)) {
1203 iwl_write_direct32(
1204 priv, HBUS_TARG_MBX_C,
1205 HBUS_TARG_MBX_C_REG_BIT_CMD_BLOCKED);
1206
1207 iwl_release_nic_access(priv);
1208 }
1209 }
1210
1211 if (flags & RF_CARD_DISABLED) {
1212 iwl_write32(priv, CSR_UCODE_DRV_GP1_SET,
1213 CSR_UCODE_DRV_GP1_REG_BIT_CT_KILL_EXIT);
1214 iwl_read32(priv, CSR_UCODE_DRV_GP1);
1215 if (!iwl_grab_nic_access(priv))
1216 iwl_release_nic_access(priv);
1217 }
1218 }
1219
1220 if (flags & HW_CARD_DISABLED)
1221 set_bit(STATUS_RF_KILL_HW, &priv->status);
1222 else
1223 clear_bit(STATUS_RF_KILL_HW, &priv->status);
1224
1225
1226 if (flags & SW_CARD_DISABLED)
1227 set_bit(STATUS_RF_KILL_SW, &priv->status);
1228 else
1229 clear_bit(STATUS_RF_KILL_SW, &priv->status);
1230
1231 if (!(flags & RXON_CARD_DISABLED))
1232 iwl_scan_cancel(priv);
1233
1234 if ((test_bit(STATUS_RF_KILL_HW, &status) !=
1235 test_bit(STATUS_RF_KILL_HW, &priv->status)) ||
1236 (test_bit(STATUS_RF_KILL_SW, &status) !=
1237 test_bit(STATUS_RF_KILL_SW, &priv->status)))
1238 queue_work(priv->workqueue, &priv->rf_kill);
1239 else
1240 wake_up_interruptible(&priv->wait_command_queue);
1241 }
1242
1243 /**
1244 * iwl4965_setup_rx_handlers - Initialize Rx handler callbacks
1245 *
1246 * Setup the RX handlers for each of the reply types sent from the uCode
1247 * to the host.
1248 *
1249 * This function chains into the hardware specific files for them to setup
1250 * any hardware specific handlers as well.
1251 */
1252 static void iwl_setup_rx_handlers(struct iwl_priv *priv)
1253 {
1254 priv->rx_handlers[REPLY_ALIVE] = iwl_rx_reply_alive;
1255 priv->rx_handlers[REPLY_ERROR] = iwl4965_rx_reply_error;
1256 priv->rx_handlers[CHANNEL_SWITCH_NOTIFICATION] = iwl4965_rx_csa;
1257 priv->rx_handlers[SPECTRUM_MEASURE_NOTIFICATION] =
1258 iwl4965_rx_spectrum_measure_notif;
1259 priv->rx_handlers[PM_SLEEP_NOTIFICATION] = iwl4965_rx_pm_sleep_notif;
1260 priv->rx_handlers[PM_DEBUG_STATISTIC_NOTIFIC] =
1261 iwl4965_rx_pm_debug_statistics_notif;
1262 priv->rx_handlers[BEACON_NOTIFICATION] = iwl4965_rx_beacon_notif;
1263
1264 /*
1265 * The same handler is used for both the REPLY to a discrete
1266 * statistics request from the host as well as for the periodic
1267 * statistics notifications (after received beacons) from the uCode.
1268 */
1269 priv->rx_handlers[REPLY_STATISTICS_CMD] = iwl_rx_statistics;
1270 priv->rx_handlers[STATISTICS_NOTIFICATION] = iwl_rx_statistics;
1271
1272 iwl_setup_rx_scan_handlers(priv);
1273
1274 /* status change handler */
1275 priv->rx_handlers[CARD_STATE_NOTIFICATION] = iwl4965_rx_card_state_notif;
1276
1277 priv->rx_handlers[MISSED_BEACONS_NOTIFICATION] =
1278 iwl_rx_missed_beacon_notif;
1279 /* Rx handlers */
1280 priv->rx_handlers[REPLY_RX_PHY_CMD] = iwl_rx_reply_rx_phy;
1281 priv->rx_handlers[REPLY_RX_MPDU_CMD] = iwl_rx_reply_rx;
1282 /* block ack */
1283 priv->rx_handlers[REPLY_COMPRESSED_BA] = iwl_rx_reply_compressed_ba;
1284 /* Set up hardware specific Rx handlers */
1285 priv->cfg->ops->lib->rx_handler_setup(priv);
1286 }
1287
1288 /*
1289 * this should be called while priv->lock is locked
1290 */
1291 static void __iwl_rx_replenish(struct iwl_priv *priv)
1292 {
1293 iwl_rx_allocate(priv);
1294 iwl_rx_queue_restock(priv);
1295 }
1296
1297
1298 /**
1299 * iwl_rx_handle - Main entry function for receiving responses from uCode
1300 *
1301 * Uses the priv->rx_handlers callback function array to invoke
1302 * the appropriate handlers, including command responses,
1303 * frame-received notifications, and other notifications.
1304 */
1305 void iwl_rx_handle(struct iwl_priv *priv)
1306 {
1307 struct iwl_rx_mem_buffer *rxb;
1308 struct iwl_rx_packet *pkt;
1309 struct iwl_rx_queue *rxq = &priv->rxq;
1310 u32 r, i;
1311 int reclaim;
1312 unsigned long flags;
1313 u8 fill_rx = 0;
1314 u32 count = 8;
1315
1316 /* uCode's read index (stored in shared DRAM) indicates the last Rx
1317 * buffer that the driver may process (last buffer filled by ucode). */
1318 r = priv->cfg->ops->lib->shared_mem_rx_idx(priv);
1319 i = rxq->read;
1320
1321 /* Rx interrupt, but nothing sent from uCode */
1322 if (i == r)
1323 IWL_DEBUG(IWL_DL_RX, "r = %d, i = %d\n", r, i);
1324
1325 if (iwl_rx_queue_space(rxq) > (RX_QUEUE_SIZE / 2))
1326 fill_rx = 1;
1327
1328 while (i != r) {
1329 rxb = rxq->queue[i];
1330
1331 /* If an RXB doesn't have a Rx queue slot associated with it,
1332 * then a bug has been introduced in the queue refilling
1333 * routines -- catch it here */
1334 BUG_ON(rxb == NULL);
1335
1336 rxq->queue[i] = NULL;
1337
1338 pci_dma_sync_single_for_cpu(priv->pci_dev, rxb->dma_addr,
1339 priv->hw_params.rx_buf_size,
1340 PCI_DMA_FROMDEVICE);
1341 pkt = (struct iwl_rx_packet *)rxb->skb->data;
1342
1343 /* Reclaim a command buffer only if this packet is a response
1344 * to a (driver-originated) command.
1345 * If the packet (e.g. Rx frame) originated from uCode,
1346 * there is no command buffer to reclaim.
1347 * Ucode should set SEQ_RX_FRAME bit if ucode-originated,
1348 * but apparently a few don't get set; catch them here. */
1349 reclaim = !(pkt->hdr.sequence & SEQ_RX_FRAME) &&
1350 (pkt->hdr.cmd != REPLY_RX_PHY_CMD) &&
1351 (pkt->hdr.cmd != REPLY_RX) &&
1352 (pkt->hdr.cmd != REPLY_COMPRESSED_BA) &&
1353 (pkt->hdr.cmd != STATISTICS_NOTIFICATION) &&
1354 (pkt->hdr.cmd != REPLY_TX);
1355
1356 /* Based on type of command response or notification,
1357 * handle those that need handling via function in
1358 * rx_handlers table. See iwl4965_setup_rx_handlers() */
1359 if (priv->rx_handlers[pkt->hdr.cmd]) {
1360 IWL_DEBUG(IWL_DL_RX, "r = %d, i = %d, %s, 0x%02x\n", r,
1361 i, get_cmd_string(pkt->hdr.cmd), pkt->hdr.cmd);
1362 priv->rx_handlers[pkt->hdr.cmd] (priv, rxb);
1363 } else {
1364 /* No handling needed */
1365 IWL_DEBUG(IWL_DL_RX,
1366 "r %d i %d No handler needed for %s, 0x%02x\n",
1367 r, i, get_cmd_string(pkt->hdr.cmd),
1368 pkt->hdr.cmd);
1369 }
1370
1371 if (reclaim) {
1372 /* Invoke any callbacks, transfer the skb to caller, and
1373 * fire off the (possibly) blocking iwl_send_cmd()
1374 * as we reclaim the driver command queue */
1375 if (rxb && rxb->skb)
1376 iwl_tx_cmd_complete(priv, rxb);
1377 else
1378 IWL_WARNING("Claim null rxb?\n");
1379 }
1380
1381 /* For now we just don't re-use anything. We can tweak this
1382 * later to try and re-use notification packets and SKBs that
1383 * fail to Rx correctly */
1384 if (rxb->skb != NULL) {
1385 priv->alloc_rxb_skb--;
1386 dev_kfree_skb_any(rxb->skb);
1387 rxb->skb = NULL;
1388 }
1389
1390 pci_unmap_single(priv->pci_dev, rxb->dma_addr,
1391 priv->hw_params.rx_buf_size,
1392 PCI_DMA_FROMDEVICE);
1393 spin_lock_irqsave(&rxq->lock, flags);
1394 list_add_tail(&rxb->list, &priv->rxq.rx_used);
1395 spin_unlock_irqrestore(&rxq->lock, flags);
1396 i = (i + 1) & RX_QUEUE_MASK;
1397 /* If there are a lot of unused frames,
1398 * restock the Rx queue so ucode wont assert. */
1399 if (fill_rx) {
1400 count++;
1401 if (count >= 8) {
1402 priv->rxq.read = i;
1403 __iwl_rx_replenish(priv);
1404 count = 0;
1405 }
1406 }
1407 }
1408
1409 /* Backtrack one entry */
1410 priv->rxq.read = i;
1411 iwl_rx_queue_restock(priv);
1412 }
1413
1414 #ifdef CONFIG_IWLWIFI_DEBUG
1415 static void iwl4965_print_rx_config_cmd(struct iwl_priv *priv)
1416 {
1417 struct iwl_rxon_cmd *rxon = &priv->staging_rxon;
1418 DECLARE_MAC_BUF(mac);
1419
1420 IWL_DEBUG_RADIO("RX CONFIG:\n");
1421 iwl_print_hex_dump(priv, IWL_DL_RADIO, (u8 *) rxon, sizeof(*rxon));
1422 IWL_DEBUG_RADIO("u16 channel: 0x%x\n", le16_to_cpu(rxon->channel));
1423 IWL_DEBUG_RADIO("u32 flags: 0x%08X\n", le32_to_cpu(rxon->flags));
1424 IWL_DEBUG_RADIO("u32 filter_flags: 0x%08x\n",
1425 le32_to_cpu(rxon->filter_flags));
1426 IWL_DEBUG_RADIO("u8 dev_type: 0x%x\n", rxon->dev_type);
1427 IWL_DEBUG_RADIO("u8 ofdm_basic_rates: 0x%02x\n",
1428 rxon->ofdm_basic_rates);
1429 IWL_DEBUG_RADIO("u8 cck_basic_rates: 0x%02x\n", rxon->cck_basic_rates);
1430 IWL_DEBUG_RADIO("u8[6] node_addr: %s\n",
1431 print_mac(mac, rxon->node_addr));
1432 IWL_DEBUG_RADIO("u8[6] bssid_addr: %s\n",
1433 print_mac(mac, rxon->bssid_addr));
1434 IWL_DEBUG_RADIO("u16 assoc_id: 0x%x\n", le16_to_cpu(rxon->assoc_id));
1435 }
1436 #endif
1437
1438 static void iwl4965_enable_interrupts(struct iwl_priv *priv)
1439 {
1440 IWL_DEBUG_ISR("Enabling interrupts\n");
1441 set_bit(STATUS_INT_ENABLED, &priv->status);
1442 iwl_write32(priv, CSR_INT_MASK, CSR_INI_SET_MASK);
1443 }
1444
1445 /* call this function to flush any scheduled tasklet */
1446 static inline void iwl_synchronize_irq(struct iwl_priv *priv)
1447 {
1448 /* wait to make sure we flush pedding tasklet*/
1449 synchronize_irq(priv->pci_dev->irq);
1450 tasklet_kill(&priv->irq_tasklet);
1451 }
1452
1453 static inline void iwl4965_disable_interrupts(struct iwl_priv *priv)
1454 {
1455 clear_bit(STATUS_INT_ENABLED, &priv->status);
1456
1457 /* disable interrupts from uCode/NIC to host */
1458 iwl_write32(priv, CSR_INT_MASK, 0x00000000);
1459
1460 /* acknowledge/clear/reset any interrupts still pending
1461 * from uCode or flow handler (Rx/Tx DMA) */
1462 iwl_write32(priv, CSR_INT, 0xffffffff);
1463 iwl_write32(priv, CSR_FH_INT_STATUS, 0xffffffff);
1464 IWL_DEBUG_ISR("Disabled interrupts\n");
1465 }
1466
1467
1468 /**
1469 * iwl4965_irq_handle_error - called for HW or SW error interrupt from card
1470 */
1471 static void iwl4965_irq_handle_error(struct iwl_priv *priv)
1472 {
1473 /* Set the FW error flag -- cleared on iwl4965_down */
1474 set_bit(STATUS_FW_ERROR, &priv->status);
1475
1476 /* Cancel currently queued command. */
1477 clear_bit(STATUS_HCMD_ACTIVE, &priv->status);
1478
1479 #ifdef CONFIG_IWLWIFI_DEBUG
1480 if (priv->debug_level & IWL_DL_FW_ERRORS) {
1481 iwl_dump_nic_error_log(priv);
1482 iwl_dump_nic_event_log(priv);
1483 iwl4965_print_rx_config_cmd(priv);
1484 }
1485 #endif
1486
1487 wake_up_interruptible(&priv->wait_command_queue);
1488
1489 /* Keep the restart process from trying to send host
1490 * commands by clearing the INIT status bit */
1491 clear_bit(STATUS_READY, &priv->status);
1492
1493 if (!test_bit(STATUS_EXIT_PENDING, &priv->status)) {
1494 IWL_DEBUG(IWL_DL_FW_ERRORS,
1495 "Restarting adapter due to uCode error.\n");
1496
1497 if (iwl_is_associated(priv)) {
1498 memcpy(&priv->recovery_rxon, &priv->active_rxon,
1499 sizeof(priv->recovery_rxon));
1500 priv->error_recovering = 1;
1501 }
1502 if (priv->cfg->mod_params->restart_fw)
1503 queue_work(priv->workqueue, &priv->restart);
1504 }
1505 }
1506
1507 static void iwl4965_error_recovery(struct iwl_priv *priv)
1508 {
1509 unsigned long flags;
1510
1511 memcpy(&priv->staging_rxon, &priv->recovery_rxon,
1512 sizeof(priv->staging_rxon));
1513 priv->staging_rxon.filter_flags &= ~RXON_FILTER_ASSOC_MSK;
1514 iwl4965_commit_rxon(priv);
1515
1516 iwl_rxon_add_station(priv, priv->bssid, 1);
1517
1518 spin_lock_irqsave(&priv->lock, flags);
1519 priv->assoc_id = le16_to_cpu(priv->staging_rxon.assoc_id);
1520 priv->error_recovering = 0;
1521 spin_unlock_irqrestore(&priv->lock, flags);
1522 }
1523
1524 static void iwl4965_irq_tasklet(struct iwl_priv *priv)
1525 {
1526 u32 inta, handled = 0;
1527 u32 inta_fh;
1528 unsigned long flags;
1529 #ifdef CONFIG_IWLWIFI_DEBUG
1530 u32 inta_mask;
1531 #endif
1532
1533 spin_lock_irqsave(&priv->lock, flags);
1534
1535 /* Ack/clear/reset pending uCode interrupts.
1536 * Note: Some bits in CSR_INT are "OR" of bits in CSR_FH_INT_STATUS,
1537 * and will clear only when CSR_FH_INT_STATUS gets cleared. */
1538 inta = iwl_read32(priv, CSR_INT);
1539 iwl_write32(priv, CSR_INT, inta);
1540
1541 /* Ack/clear/reset pending flow-handler (DMA) interrupts.
1542 * Any new interrupts that happen after this, either while we're
1543 * in this tasklet, or later, will show up in next ISR/tasklet. */
1544 inta_fh = iwl_read32(priv, CSR_FH_INT_STATUS);
1545 iwl_write32(priv, CSR_FH_INT_STATUS, inta_fh);
1546
1547 #ifdef CONFIG_IWLWIFI_DEBUG
1548 if (priv->debug_level & IWL_DL_ISR) {
1549 /* just for debug */
1550 inta_mask = iwl_read32(priv, CSR_INT_MASK);
1551 IWL_DEBUG_ISR("inta 0x%08x, enabled 0x%08x, fh 0x%08x\n",
1552 inta, inta_mask, inta_fh);
1553 }
1554 #endif
1555
1556 /* Since CSR_INT and CSR_FH_INT_STATUS reads and clears are not
1557 * atomic, make sure that inta covers all the interrupts that
1558 * we've discovered, even if FH interrupt came in just after
1559 * reading CSR_INT. */
1560 if (inta_fh & CSR49_FH_INT_RX_MASK)
1561 inta |= CSR_INT_BIT_FH_RX;
1562 if (inta_fh & CSR49_FH_INT_TX_MASK)
1563 inta |= CSR_INT_BIT_FH_TX;
1564
1565 /* Now service all interrupt bits discovered above. */
1566 if (inta & CSR_INT_BIT_HW_ERR) {
1567 IWL_ERROR("Microcode HW error detected. Restarting.\n");
1568
1569 /* Tell the device to stop sending interrupts */
1570 iwl4965_disable_interrupts(priv);
1571
1572 iwl4965_irq_handle_error(priv);
1573
1574 handled |= CSR_INT_BIT_HW_ERR;
1575
1576 spin_unlock_irqrestore(&priv->lock, flags);
1577
1578 return;
1579 }
1580
1581 #ifdef CONFIG_IWLWIFI_DEBUG
1582 if (priv->debug_level & (IWL_DL_ISR)) {
1583 /* NIC fires this, but we don't use it, redundant with WAKEUP */
1584 if (inta & CSR_INT_BIT_SCD)
1585 IWL_DEBUG_ISR("Scheduler finished to transmit "
1586 "the frame/frames.\n");
1587
1588 /* Alive notification via Rx interrupt will do the real work */
1589 if (inta & CSR_INT_BIT_ALIVE)
1590 IWL_DEBUG_ISR("Alive interrupt\n");
1591 }
1592 #endif
1593 /* Safely ignore these bits for debug checks below */
1594 inta &= ~(CSR_INT_BIT_SCD | CSR_INT_BIT_ALIVE);
1595
1596 /* HW RF KILL switch toggled */
1597 if (inta & CSR_INT_BIT_RF_KILL) {
1598 int hw_rf_kill = 0;
1599 if (!(iwl_read32(priv, CSR_GP_CNTRL) &
1600 CSR_GP_CNTRL_REG_FLAG_HW_RF_KILL_SW))
1601 hw_rf_kill = 1;
1602
1603 IWL_DEBUG(IWL_DL_RF_KILL, "RF_KILL bit toggled to %s.\n",
1604 hw_rf_kill ? "disable radio":"enable radio");
1605
1606 /* driver only loads ucode once setting the interface up.
1607 * the driver as well won't allow loading if RFKILL is set
1608 * therefore no need to restart the driver from this handler
1609 */
1610 if (!hw_rf_kill && !test_bit(STATUS_ALIVE, &priv->status))
1611 clear_bit(STATUS_RF_KILL_HW, &priv->status);
1612
1613 handled |= CSR_INT_BIT_RF_KILL;
1614 }
1615
1616 /* Chip got too hot and stopped itself */
1617 if (inta & CSR_INT_BIT_CT_KILL) {
1618 IWL_ERROR("Microcode CT kill error detected.\n");
1619 handled |= CSR_INT_BIT_CT_KILL;
1620 }
1621
1622 /* Error detected by uCode */
1623 if (inta & CSR_INT_BIT_SW_ERR) {
1624 IWL_ERROR("Microcode SW error detected. Restarting 0x%X.\n",
1625 inta);
1626 iwl4965_irq_handle_error(priv);
1627 handled |= CSR_INT_BIT_SW_ERR;
1628 }
1629
1630 /* uCode wakes up after power-down sleep */
1631 if (inta & CSR_INT_BIT_WAKEUP) {
1632 IWL_DEBUG_ISR("Wakeup interrupt\n");
1633 iwl_rx_queue_update_write_ptr(priv, &priv->rxq);
1634 iwl_txq_update_write_ptr(priv, &priv->txq[0]);
1635 iwl_txq_update_write_ptr(priv, &priv->txq[1]);
1636 iwl_txq_update_write_ptr(priv, &priv->txq[2]);
1637 iwl_txq_update_write_ptr(priv, &priv->txq[3]);
1638 iwl_txq_update_write_ptr(priv, &priv->txq[4]);
1639 iwl_txq_update_write_ptr(priv, &priv->txq[5]);
1640
1641 handled |= CSR_INT_BIT_WAKEUP;
1642 }
1643
1644 /* All uCode command responses, including Tx command responses,
1645 * Rx "responses" (frame-received notification), and other
1646 * notifications from uCode come through here*/
1647 if (inta & (CSR_INT_BIT_FH_RX | CSR_INT_BIT_SW_RX)) {
1648 iwl_rx_handle(priv);
1649 handled |= (CSR_INT_BIT_FH_RX | CSR_INT_BIT_SW_RX);
1650 }
1651
1652 if (inta & CSR_INT_BIT_FH_TX) {
1653 IWL_DEBUG_ISR("Tx interrupt\n");
1654 handled |= CSR_INT_BIT_FH_TX;
1655 /* FH finished to write, send event */
1656 priv->ucode_write_complete = 1;
1657 wake_up_interruptible(&priv->wait_command_queue);
1658 }
1659
1660 if (inta & ~handled)
1661 IWL_ERROR("Unhandled INTA bits 0x%08x\n", inta & ~handled);
1662
1663 if (inta & ~CSR_INI_SET_MASK) {
1664 IWL_WARNING("Disabled INTA bits 0x%08x were pending\n",
1665 inta & ~CSR_INI_SET_MASK);
1666 IWL_WARNING(" with FH_INT = 0x%08x\n", inta_fh);
1667 }
1668
1669 /* Re-enable all interrupts */
1670 /* only Re-enable if diabled by irq */
1671 if (test_bit(STATUS_INT_ENABLED, &priv->status))
1672 iwl4965_enable_interrupts(priv);
1673
1674 #ifdef CONFIG_IWLWIFI_DEBUG
1675 if (priv->debug_level & (IWL_DL_ISR)) {
1676 inta = iwl_read32(priv, CSR_INT);
1677 inta_mask = iwl_read32(priv, CSR_INT_MASK);
1678 inta_fh = iwl_read32(priv, CSR_FH_INT_STATUS);
1679 IWL_DEBUG_ISR("End inta 0x%08x, enabled 0x%08x, fh 0x%08x, "
1680 "flags 0x%08lx\n", inta, inta_mask, inta_fh, flags);
1681 }
1682 #endif
1683 spin_unlock_irqrestore(&priv->lock, flags);
1684 }
1685
1686 static irqreturn_t iwl4965_isr(int irq, void *data)
1687 {
1688 struct iwl_priv *priv = data;
1689 u32 inta, inta_mask;
1690 u32 inta_fh;
1691 if (!priv)
1692 return IRQ_NONE;
1693
1694 spin_lock(&priv->lock);
1695
1696 /* Disable (but don't clear!) interrupts here to avoid
1697 * back-to-back ISRs and sporadic interrupts from our NIC.
1698 * If we have something to service, the tasklet will re-enable ints.
1699 * If we *don't* have something, we'll re-enable before leaving here. */
1700 inta_mask = iwl_read32(priv, CSR_INT_MASK); /* just for debug */
1701 iwl_write32(priv, CSR_INT_MASK, 0x00000000);
1702
1703 /* Discover which interrupts are active/pending */
1704 inta = iwl_read32(priv, CSR_INT);
1705 inta_fh = iwl_read32(priv, CSR_FH_INT_STATUS);
1706
1707 /* Ignore interrupt if there's nothing in NIC to service.
1708 * This may be due to IRQ shared with another device,
1709 * or due to sporadic interrupts thrown from our NIC. */
1710 if (!inta && !inta_fh) {
1711 IWL_DEBUG_ISR("Ignore interrupt, inta == 0, inta_fh == 0\n");
1712 goto none;
1713 }
1714
1715 if ((inta == 0xFFFFFFFF) || ((inta & 0xFFFFFFF0) == 0xa5a5a5a0)) {
1716 /* Hardware disappeared. It might have already raised
1717 * an interrupt */
1718 IWL_WARNING("HARDWARE GONE?? INTA == 0x%080x\n", inta);
1719 goto unplugged;
1720 }
1721
1722 IWL_DEBUG_ISR("ISR inta 0x%08x, enabled 0x%08x, fh 0x%08x\n",
1723 inta, inta_mask, inta_fh);
1724
1725 inta &= ~CSR_INT_BIT_SCD;
1726
1727 /* iwl4965_irq_tasklet() will service interrupts and re-enable them */
1728 if (likely(inta || inta_fh))
1729 tasklet_schedule(&priv->irq_tasklet);
1730
1731 unplugged:
1732 spin_unlock(&priv->lock);
1733 return IRQ_HANDLED;
1734
1735 none:
1736 /* re-enable interrupts here since we don't have anything to service. */
1737 /* only Re-enable if diabled by irq */
1738 if (test_bit(STATUS_INT_ENABLED, &priv->status))
1739 iwl4965_enable_interrupts(priv);
1740 spin_unlock(&priv->lock);
1741 return IRQ_NONE;
1742 }
1743
1744 /******************************************************************************
1745 *
1746 * uCode download functions
1747 *
1748 ******************************************************************************/
1749
1750 static void iwl4965_dealloc_ucode_pci(struct iwl_priv *priv)
1751 {
1752 iwl_free_fw_desc(priv->pci_dev, &priv->ucode_code);
1753 iwl_free_fw_desc(priv->pci_dev, &priv->ucode_data);
1754 iwl_free_fw_desc(priv->pci_dev, &priv->ucode_data_backup);
1755 iwl_free_fw_desc(priv->pci_dev, &priv->ucode_init);
1756 iwl_free_fw_desc(priv->pci_dev, &priv->ucode_init_data);
1757 iwl_free_fw_desc(priv->pci_dev, &priv->ucode_boot);
1758 }
1759
1760 static void iwl4965_nic_start(struct iwl_priv *priv)
1761 {
1762 /* Remove all resets to allow NIC to operate */
1763 iwl_write32(priv, CSR_RESET, 0);
1764 }
1765
1766
1767 /**
1768 * iwl4965_read_ucode - Read uCode images from disk file.
1769 *
1770 * Copy into buffers for card to fetch via bus-mastering
1771 */
1772 static int iwl4965_read_ucode(struct iwl_priv *priv)
1773 {
1774 struct iwl_ucode *ucode;
1775 int ret;
1776 const struct firmware *ucode_raw;
1777 const char *name = priv->cfg->fw_name;
1778 u8 *src;
1779 size_t len;
1780 u32 ver, inst_size, data_size, init_size, init_data_size, boot_size;
1781
1782 /* Ask kernel firmware_class module to get the boot firmware off disk.
1783 * request_firmware() is synchronous, file is in memory on return. */
1784 ret = request_firmware(&ucode_raw, name, &priv->pci_dev->dev);
1785 if (ret < 0) {
1786 IWL_ERROR("%s firmware file req failed: Reason %d\n",
1787 name, ret);
1788 goto error;
1789 }
1790
1791 IWL_DEBUG_INFO("Got firmware '%s' file (%zd bytes) from disk\n",
1792 name, ucode_raw->size);
1793
1794 /* Make sure that we got at least our header! */
1795 if (ucode_raw->size < sizeof(*ucode)) {
1796 IWL_ERROR("File size way too small!\n");
1797 ret = -EINVAL;
1798 goto err_release;
1799 }
1800
1801 /* Data from ucode file: header followed by uCode images */
1802 ucode = (void *)ucode_raw->data;
1803
1804 ver = le32_to_cpu(ucode->ver);
1805 inst_size = le32_to_cpu(ucode->inst_size);
1806 data_size = le32_to_cpu(ucode->data_size);
1807 init_size = le32_to_cpu(ucode->init_size);
1808 init_data_size = le32_to_cpu(ucode->init_data_size);
1809 boot_size = le32_to_cpu(ucode->boot_size);
1810
1811 IWL_DEBUG_INFO("f/w package hdr ucode version = 0x%x\n", ver);
1812 IWL_DEBUG_INFO("f/w package hdr runtime inst size = %u\n",
1813 inst_size);
1814 IWL_DEBUG_INFO("f/w package hdr runtime data size = %u\n",
1815 data_size);
1816 IWL_DEBUG_INFO("f/w package hdr init inst size = %u\n",
1817 init_size);
1818 IWL_DEBUG_INFO("f/w package hdr init data size = %u\n",
1819 init_data_size);
1820 IWL_DEBUG_INFO("f/w package hdr boot inst size = %u\n",
1821 boot_size);
1822
1823 /* Verify size of file vs. image size info in file's header */
1824 if (ucode_raw->size < sizeof(*ucode) +
1825 inst_size + data_size + init_size +
1826 init_data_size + boot_size) {
1827
1828 IWL_DEBUG_INFO("uCode file size %d too small\n",
1829 (int)ucode_raw->size);
1830 ret = -EINVAL;
1831 goto err_release;
1832 }
1833
1834 /* Verify that uCode images will fit in card's SRAM */
1835 if (inst_size > priv->hw_params.max_inst_size) {
1836 IWL_DEBUG_INFO("uCode instr len %d too large to fit in\n",
1837 inst_size);
1838 ret = -EINVAL;
1839 goto err_release;
1840 }
1841
1842 if (data_size > priv->hw_params.max_data_size) {
1843 IWL_DEBUG_INFO("uCode data len %d too large to fit in\n",
1844 data_size);
1845 ret = -EINVAL;
1846 goto err_release;
1847 }
1848 if (init_size > priv->hw_params.max_inst_size) {
1849 IWL_DEBUG_INFO
1850 ("uCode init instr len %d too large to fit in\n",
1851 init_size);
1852 ret = -EINVAL;
1853 goto err_release;
1854 }
1855 if (init_data_size > priv->hw_params.max_data_size) {
1856 IWL_DEBUG_INFO
1857 ("uCode init data len %d too large to fit in\n",
1858 init_data_size);
1859 ret = -EINVAL;
1860 goto err_release;
1861 }
1862 if (boot_size > priv->hw_params.max_bsm_size) {
1863 IWL_DEBUG_INFO
1864 ("uCode boot instr len %d too large to fit in\n",
1865 boot_size);
1866 ret = -EINVAL;
1867 goto err_release;
1868 }
1869
1870 /* Allocate ucode buffers for card's bus-master loading ... */
1871
1872 /* Runtime instructions and 2 copies of data:
1873 * 1) unmodified from disk
1874 * 2) backup cache for save/restore during power-downs */
1875 priv->ucode_code.len = inst_size;
1876 iwl_alloc_fw_desc(priv->pci_dev, &priv->ucode_code);
1877
1878 priv->ucode_data.len = data_size;
1879 iwl_alloc_fw_desc(priv->pci_dev, &priv->ucode_data);
1880
1881 priv->ucode_data_backup.len = data_size;
1882 iwl_alloc_fw_desc(priv->pci_dev, &priv->ucode_data_backup);
1883
1884 /* Initialization instructions and data */
1885 if (init_size && init_data_size) {
1886 priv->ucode_init.len = init_size;
1887 iwl_alloc_fw_desc(priv->pci_dev, &priv->ucode_init);
1888
1889 priv->ucode_init_data.len = init_data_size;
1890 iwl_alloc_fw_desc(priv->pci_dev, &priv->ucode_init_data);
1891
1892 if (!priv->ucode_init.v_addr || !priv->ucode_init_data.v_addr)
1893 goto err_pci_alloc;
1894 }
1895
1896 /* Bootstrap (instructions only, no data) */
1897 if (boot_size) {
1898 priv->ucode_boot.len = boot_size;
1899 iwl_alloc_fw_desc(priv->pci_dev, &priv->ucode_boot);
1900
1901 if (!priv->ucode_boot.v_addr)
1902 goto err_pci_alloc;
1903 }
1904
1905 /* Copy images into buffers for card's bus-master reads ... */
1906
1907 /* Runtime instructions (first block of data in file) */
1908 src = &ucode->data[0];
1909 len = priv->ucode_code.len;
1910 IWL_DEBUG_INFO("Copying (but not loading) uCode instr len %Zd\n", len);
1911 memcpy(priv->ucode_code.v_addr, src, len);
1912 IWL_DEBUG_INFO("uCode instr buf vaddr = 0x%p, paddr = 0x%08x\n",
1913 priv->ucode_code.v_addr, (u32)priv->ucode_code.p_addr);
1914
1915 /* Runtime data (2nd block)
1916 * NOTE: Copy into backup buffer will be done in iwl4965_up() */
1917 src = &ucode->data[inst_size];
1918 len = priv->ucode_data.len;
1919 IWL_DEBUG_INFO("Copying (but not loading) uCode data len %Zd\n", len);
1920 memcpy(priv->ucode_data.v_addr, src, len);
1921 memcpy(priv->ucode_data_backup.v_addr, src, len);
1922
1923 /* Initialization instructions (3rd block) */
1924 if (init_size) {
1925 src = &ucode->data[inst_size + data_size];
1926 len = priv->ucode_init.len;
1927 IWL_DEBUG_INFO("Copying (but not loading) init instr len %Zd\n",
1928 len);
1929 memcpy(priv->ucode_init.v_addr, src, len);
1930 }
1931
1932 /* Initialization data (4th block) */
1933 if (init_data_size) {
1934 src = &ucode->data[inst_size + data_size + init_size];
1935 len = priv->ucode_init_data.len;
1936 IWL_DEBUG_INFO("Copying (but not loading) init data len %Zd\n",
1937 len);
1938 memcpy(priv->ucode_init_data.v_addr, src, len);
1939 }
1940
1941 /* Bootstrap instructions (5th block) */
1942 src = &ucode->data[inst_size + data_size + init_size + init_data_size];
1943 len = priv->ucode_boot.len;
1944 IWL_DEBUG_INFO("Copying (but not loading) boot instr len %Zd\n", len);
1945 memcpy(priv->ucode_boot.v_addr, src, len);
1946
1947 /* We have our copies now, allow OS release its copies */
1948 release_firmware(ucode_raw);
1949 return 0;
1950
1951 err_pci_alloc:
1952 IWL_ERROR("failed to allocate pci memory\n");
1953 ret = -ENOMEM;
1954 iwl4965_dealloc_ucode_pci(priv);
1955
1956 err_release:
1957 release_firmware(ucode_raw);
1958
1959 error:
1960 return ret;
1961 }
1962
1963 /**
1964 * iwl_alive_start - called after REPLY_ALIVE notification received
1965 * from protocol/runtime uCode (initialization uCode's
1966 * Alive gets handled by iwl_init_alive_start()).
1967 */
1968 static void iwl_alive_start(struct iwl_priv *priv)
1969 {
1970 int ret = 0;
1971
1972 IWL_DEBUG_INFO("Runtime Alive received.\n");
1973
1974 if (priv->card_alive.is_valid != UCODE_VALID_OK) {
1975 /* We had an error bringing up the hardware, so take it
1976 * all the way back down so we can try again */
1977 IWL_DEBUG_INFO("Alive failed.\n");
1978 goto restart;
1979 }
1980
1981 /* Initialize uCode has loaded Runtime uCode ... verify inst image.
1982 * This is a paranoid check, because we would not have gotten the
1983 * "runtime" alive if code weren't properly loaded. */
1984 if (iwl_verify_ucode(priv)) {
1985 /* Runtime instruction load was bad;
1986 * take it all the way back down so we can try again */
1987 IWL_DEBUG_INFO("Bad runtime uCode load.\n");
1988 goto restart;
1989 }
1990
1991 iwl_clear_stations_table(priv);
1992 ret = priv->cfg->ops->lib->alive_notify(priv);
1993 if (ret) {
1994 IWL_WARNING("Could not complete ALIVE transition [ntf]: %d\n",
1995 ret);
1996 goto restart;
1997 }
1998
1999 /* After the ALIVE response, we can send host commands to 4965 uCode */
2000 set_bit(STATUS_ALIVE, &priv->status);
2001
2002 if (iwl_is_rfkill(priv))
2003 return;
2004
2005 ieee80211_wake_queues(priv->hw);
2006
2007 priv->active_rate = priv->rates_mask;
2008 priv->active_rate_basic = priv->rates_mask & IWL_BASIC_RATES_MASK;
2009
2010 if (iwl_is_associated(priv)) {
2011 struct iwl_rxon_cmd *active_rxon =
2012 (struct iwl_rxon_cmd *)&priv->active_rxon;
2013
2014 memcpy(&priv->staging_rxon, &priv->active_rxon,
2015 sizeof(priv->staging_rxon));
2016 active_rxon->filter_flags &= ~RXON_FILTER_ASSOC_MSK;
2017 } else {
2018 /* Initialize our rx_config data */
2019 iwl4965_connection_init_rx_config(priv);
2020 memcpy(priv->staging_rxon.node_addr, priv->mac_addr, ETH_ALEN);
2021 }
2022
2023 /* Configure Bluetooth device coexistence support */
2024 iwl4965_send_bt_config(priv);
2025
2026 iwl_reset_run_time_calib(priv);
2027
2028 /* Configure the adapter for unassociated operation */
2029 iwl4965_commit_rxon(priv);
2030
2031 /* At this point, the NIC is initialized and operational */
2032 iwl_rf_kill_ct_config(priv);
2033
2034 iwl_leds_register(priv);
2035
2036 IWL_DEBUG_INFO("ALIVE processing complete.\n");
2037 set_bit(STATUS_READY, &priv->status);
2038 wake_up_interruptible(&priv->wait_command_queue);
2039
2040 if (priv->error_recovering)
2041 iwl4965_error_recovery(priv);
2042
2043 iwl_power_update_mode(priv, 1);
2044 ieee80211_notify_mac(priv->hw, IEEE80211_NOTIFY_RE_ASSOC);
2045
2046 if (test_and_clear_bit(STATUS_MODE_PENDING, &priv->status))
2047 iwl4965_set_mode(priv, priv->iw_mode);
2048
2049 return;
2050
2051 restart:
2052 queue_work(priv->workqueue, &priv->restart);
2053 }
2054
2055 static void iwl_cancel_deferred_work(struct iwl_priv *priv);
2056
2057 static void __iwl4965_down(struct iwl_priv *priv)
2058 {
2059 unsigned long flags;
2060 int exit_pending = test_bit(STATUS_EXIT_PENDING, &priv->status);
2061
2062 IWL_DEBUG_INFO(DRV_NAME " is going down\n");
2063
2064 if (!exit_pending)
2065 set_bit(STATUS_EXIT_PENDING, &priv->status);
2066
2067 iwl_leds_unregister(priv);
2068
2069 iwl_clear_stations_table(priv);
2070
2071 /* Unblock any waiting calls */
2072 wake_up_interruptible_all(&priv->wait_command_queue);
2073
2074 /* Wipe out the EXIT_PENDING status bit if we are not actually
2075 * exiting the module */
2076 if (!exit_pending)
2077 clear_bit(STATUS_EXIT_PENDING, &priv->status);
2078
2079 /* stop and reset the on-board processor */
2080 iwl_write32(priv, CSR_RESET, CSR_RESET_REG_FLAG_NEVO_RESET);
2081
2082 /* tell the device to stop sending interrupts */
2083 spin_lock_irqsave(&priv->lock, flags);
2084 iwl4965_disable_interrupts(priv);
2085 spin_unlock_irqrestore(&priv->lock, flags);
2086 iwl_synchronize_irq(priv);
2087
2088 if (priv->mac80211_registered)
2089 ieee80211_stop_queues(priv->hw);
2090
2091 /* If we have not previously called iwl4965_init() then
2092 * clear all bits but the RF Kill and SUSPEND bits and return */
2093 if (!iwl_is_init(priv)) {
2094 priv->status = test_bit(STATUS_RF_KILL_HW, &priv->status) <<
2095 STATUS_RF_KILL_HW |
2096 test_bit(STATUS_RF_KILL_SW, &priv->status) <<
2097 STATUS_RF_KILL_SW |
2098 test_bit(STATUS_GEO_CONFIGURED, &priv->status) <<
2099 STATUS_GEO_CONFIGURED |
2100 test_bit(STATUS_IN_SUSPEND, &priv->status) <<
2101 STATUS_IN_SUSPEND |
2102 test_bit(STATUS_EXIT_PENDING, &priv->status) <<
2103 STATUS_EXIT_PENDING;
2104 goto exit;
2105 }
2106
2107 /* ...otherwise clear out all the status bits but the RF Kill and
2108 * SUSPEND bits and continue taking the NIC down. */
2109 priv->status &= test_bit(STATUS_RF_KILL_HW, &priv->status) <<
2110 STATUS_RF_KILL_HW |
2111 test_bit(STATUS_RF_KILL_SW, &priv->status) <<
2112 STATUS_RF_KILL_SW |
2113 test_bit(STATUS_GEO_CONFIGURED, &priv->status) <<
2114 STATUS_GEO_CONFIGURED |
2115 test_bit(STATUS_IN_SUSPEND, &priv->status) <<
2116 STATUS_IN_SUSPEND |
2117 test_bit(STATUS_FW_ERROR, &priv->status) <<
2118 STATUS_FW_ERROR |
2119 test_bit(STATUS_EXIT_PENDING, &priv->status) <<
2120 STATUS_EXIT_PENDING;
2121
2122 spin_lock_irqsave(&priv->lock, flags);
2123 iwl_clear_bit(priv, CSR_GP_CNTRL,
2124 CSR_GP_CNTRL_REG_FLAG_MAC_ACCESS_REQ);
2125 spin_unlock_irqrestore(&priv->lock, flags);
2126
2127 iwl_txq_ctx_stop(priv);
2128 iwl_rxq_stop(priv);
2129
2130 spin_lock_irqsave(&priv->lock, flags);
2131 if (!iwl_grab_nic_access(priv)) {
2132 iwl_write_prph(priv, APMG_CLK_DIS_REG,
2133 APMG_CLK_VAL_DMA_CLK_RQT);
2134 iwl_release_nic_access(priv);
2135 }
2136 spin_unlock_irqrestore(&priv->lock, flags);
2137
2138 udelay(5);
2139
2140 /* FIXME: apm_ops.suspend(priv) */
2141 priv->cfg->ops->lib->apm_ops.reset(priv);
2142 priv->cfg->ops->lib->free_shared_mem(priv);
2143
2144 exit:
2145 memset(&priv->card_alive, 0, sizeof(struct iwl_alive_resp));
2146
2147 if (priv->ibss_beacon)
2148 dev_kfree_skb(priv->ibss_beacon);
2149 priv->ibss_beacon = NULL;
2150
2151 /* clear out any free frames */
2152 iwl_clear_free_frames(priv);
2153 }
2154
2155 static void iwl4965_down(struct iwl_priv *priv)
2156 {
2157 mutex_lock(&priv->mutex);
2158 __iwl4965_down(priv);
2159 mutex_unlock(&priv->mutex);
2160
2161 iwl_cancel_deferred_work(priv);
2162 }
2163
2164 #define MAX_HW_RESTARTS 5
2165
2166 static int __iwl4965_up(struct iwl_priv *priv)
2167 {
2168 int i;
2169 int ret;
2170
2171 if (test_bit(STATUS_EXIT_PENDING, &priv->status)) {
2172 IWL_WARNING("Exit pending; will not bring the NIC up\n");
2173 return -EIO;
2174 }
2175
2176 if (!priv->ucode_data_backup.v_addr || !priv->ucode_data.v_addr) {
2177 IWL_ERROR("ucode not available for device bringup\n");
2178 return -EIO;
2179 }
2180
2181 /* If platform's RF_KILL switch is NOT set to KILL */
2182 if (iwl_read32(priv, CSR_GP_CNTRL) &
2183 CSR_GP_CNTRL_REG_FLAG_HW_RF_KILL_SW)
2184 clear_bit(STATUS_RF_KILL_HW, &priv->status);
2185 else
2186 set_bit(STATUS_RF_KILL_HW, &priv->status);
2187
2188 if (!test_bit(STATUS_IN_SUSPEND, &priv->status) &&
2189 iwl_is_rfkill(priv)) {
2190 iwl_rfkill_set_hw_state(priv);
2191 IWL_WARNING("Radio disabled by %s RF Kill switch\n",
2192 test_bit(STATUS_RF_KILL_HW, &priv->status) ? "HW" : "SW");
2193 return -ENODEV;
2194 }
2195
2196 iwl_rfkill_set_hw_state(priv);
2197 iwl_write32(priv, CSR_INT, 0xFFFFFFFF);
2198
2199 ret = priv->cfg->ops->lib->alloc_shared_mem(priv);
2200 if (ret) {
2201 IWL_ERROR("Unable to allocate shared memory\n");
2202 return ret;
2203 }
2204
2205 ret = iwl_hw_nic_init(priv);
2206 if (ret) {
2207 IWL_ERROR("Unable to init nic\n");
2208 return ret;
2209 }
2210
2211 /* make sure rfkill handshake bits are cleared */
2212 iwl_write32(priv, CSR_UCODE_DRV_GP1_CLR, CSR_UCODE_SW_BIT_RFKILL);
2213 iwl_write32(priv, CSR_UCODE_DRV_GP1_CLR,
2214 CSR_UCODE_DRV_GP1_BIT_CMD_BLOCKED);
2215
2216 /* clear (again), then enable host interrupts */
2217 iwl_write32(priv, CSR_INT, 0xFFFFFFFF);
2218 iwl4965_enable_interrupts(priv);
2219
2220 /* really make sure rfkill handshake bits are cleared */
2221 iwl_write32(priv, CSR_UCODE_DRV_GP1_CLR, CSR_UCODE_SW_BIT_RFKILL);
2222 iwl_write32(priv, CSR_UCODE_DRV_GP1_CLR, CSR_UCODE_SW_BIT_RFKILL);
2223
2224 /* Copy original ucode data image from disk into backup cache.
2225 * This will be used to initialize the on-board processor's
2226 * data SRAM for a clean start when the runtime program first loads. */
2227 memcpy(priv->ucode_data_backup.v_addr, priv->ucode_data.v_addr,
2228 priv->ucode_data.len);
2229
2230 /* We return success when we resume from suspend and rf_kill is on. */
2231 if (test_bit(STATUS_RF_KILL_HW, &priv->status) ||
2232 test_bit(STATUS_RF_KILL_SW, &priv->status))
2233 return 0;
2234
2235 for (i = 0; i < MAX_HW_RESTARTS; i++) {
2236
2237 iwl_clear_stations_table(priv);
2238
2239 /* load bootstrap state machine,
2240 * load bootstrap program into processor's memory,
2241 * prepare to load the "initialize" uCode */
2242 ret = priv->cfg->ops->lib->load_ucode(priv);
2243
2244 if (ret) {
2245 IWL_ERROR("Unable to set up bootstrap uCode: %d\n", ret);
2246 continue;
2247 }
2248
2249 /* Clear out the uCode error bit if it is set */
2250 clear_bit(STATUS_FW_ERROR, &priv->status);
2251
2252 /* start card; "initialize" will load runtime ucode */
2253 iwl4965_nic_start(priv);
2254
2255 IWL_DEBUG_INFO(DRV_NAME " is coming up\n");
2256
2257 return 0;
2258 }
2259
2260 set_bit(STATUS_EXIT_PENDING, &priv->status);
2261 __iwl4965_down(priv);
2262 clear_bit(STATUS_EXIT_PENDING, &priv->status);
2263
2264 /* tried to restart and config the device for as long as our
2265 * patience could withstand */
2266 IWL_ERROR("Unable to initialize device after %d attempts.\n", i);
2267 return -EIO;
2268 }
2269
2270
2271 /*****************************************************************************
2272 *
2273 * Workqueue callbacks
2274 *
2275 *****************************************************************************/
2276
2277 static void iwl_bg_init_alive_start(struct work_struct *data)
2278 {
2279 struct iwl_priv *priv =
2280 container_of(data, struct iwl_priv, init_alive_start.work);
2281
2282 if (test_bit(STATUS_EXIT_PENDING, &priv->status))
2283 return;
2284
2285 mutex_lock(&priv->mutex);
2286 priv->cfg->ops->lib->init_alive_start(priv);
2287 mutex_unlock(&priv->mutex);
2288 }
2289
2290 static void iwl_bg_alive_start(struct work_struct *data)
2291 {
2292 struct iwl_priv *priv =
2293 container_of(data, struct iwl_priv, alive_start.work);
2294
2295 if (test_bit(STATUS_EXIT_PENDING, &priv->status))
2296 return;
2297
2298 mutex_lock(&priv->mutex);
2299 iwl_alive_start(priv);
2300 mutex_unlock(&priv->mutex);
2301 }
2302
2303 static void iwl4965_bg_rf_kill(struct work_struct *work)
2304 {
2305 struct iwl_priv *priv = container_of(work, struct iwl_priv, rf_kill);
2306
2307 wake_up_interruptible(&priv->wait_command_queue);
2308
2309 if (test_bit(STATUS_EXIT_PENDING, &priv->status))
2310 return;
2311
2312 mutex_lock(&priv->mutex);
2313
2314 if (!iwl_is_rfkill(priv)) {
2315 IWL_DEBUG(IWL_DL_RF_KILL,
2316 "HW and/or SW RF Kill no longer active, restarting "
2317 "device\n");
2318 if (!test_bit(STATUS_EXIT_PENDING, &priv->status))
2319 queue_work(priv->workqueue, &priv->restart);
2320 } else {
2321 /* make sure mac80211 stop sending Tx frame */
2322 if (priv->mac80211_registered)
2323 ieee80211_stop_queues(priv->hw);
2324
2325 if (!test_bit(STATUS_RF_KILL_HW, &priv->status))
2326 IWL_DEBUG_RF_KILL("Can not turn radio back on - "
2327 "disabled by SW switch\n");
2328 else
2329 IWL_WARNING("Radio Frequency Kill Switch is On:\n"
2330 "Kill switch must be turned off for "
2331 "wireless networking to work.\n");
2332 }
2333 iwl_rfkill_set_hw_state(priv);
2334
2335 mutex_unlock(&priv->mutex);
2336 }
2337
2338 static void iwl4965_bg_set_monitor(struct work_struct *work)
2339 {
2340 struct iwl_priv *priv = container_of(work,
2341 struct iwl_priv, set_monitor);
2342 int ret;
2343
2344 IWL_DEBUG(IWL_DL_STATE, "setting monitor mode\n");
2345
2346 mutex_lock(&priv->mutex);
2347
2348 ret = iwl4965_set_mode(priv, IEEE80211_IF_TYPE_MNTR);
2349
2350 if (ret) {
2351 if (ret == -EAGAIN)
2352 IWL_DEBUG(IWL_DL_STATE, "leave - not ready\n");
2353 else
2354 IWL_ERROR("iwl4965_set_mode() failed ret = %d\n", ret);
2355 }
2356
2357 mutex_unlock(&priv->mutex);
2358 }
2359
2360 static void iwl_bg_run_time_calib_work(struct work_struct *work)
2361 {
2362 struct iwl_priv *priv = container_of(work, struct iwl_priv,
2363 run_time_calib_work);
2364
2365 mutex_lock(&priv->mutex);
2366
2367 if (test_bit(STATUS_EXIT_PENDING, &priv->status) ||
2368 test_bit(STATUS_SCANNING, &priv->status)) {
2369 mutex_unlock(&priv->mutex);
2370 return;
2371 }
2372
2373 if (priv->start_calib) {
2374 iwl_chain_noise_calibration(priv, &priv->statistics);
2375
2376 iwl_sensitivity_calibration(priv, &priv->statistics);
2377 }
2378
2379 mutex_unlock(&priv->mutex);
2380 return;
2381 }
2382
2383 static void iwl4965_bg_up(struct work_struct *data)
2384 {
2385 struct iwl_priv *priv = container_of(data, struct iwl_priv, up);
2386
2387 if (test_bit(STATUS_EXIT_PENDING, &priv->status))
2388 return;
2389
2390 mutex_lock(&priv->mutex);
2391 __iwl4965_up(priv);
2392 mutex_unlock(&priv->mutex);
2393 }
2394
2395 static void iwl4965_bg_restart(struct work_struct *data)
2396 {
2397 struct iwl_priv *priv = container_of(data, struct iwl_priv, restart);
2398
2399 if (test_bit(STATUS_EXIT_PENDING, &priv->status))
2400 return;
2401
2402 iwl4965_down(priv);
2403 queue_work(priv->workqueue, &priv->up);
2404 }
2405
2406 static void iwl4965_bg_rx_replenish(struct work_struct *data)
2407 {
2408 struct iwl_priv *priv =
2409 container_of(data, struct iwl_priv, rx_replenish);
2410
2411 if (test_bit(STATUS_EXIT_PENDING, &priv->status))
2412 return;
2413
2414 mutex_lock(&priv->mutex);
2415 iwl_rx_replenish(priv);
2416 mutex_unlock(&priv->mutex);
2417 }
2418
2419 #define IWL_DELAY_NEXT_SCAN (HZ*2)
2420
2421 static void iwl4965_post_associate(struct iwl_priv *priv)
2422 {
2423 struct ieee80211_conf *conf = NULL;
2424 int ret = 0;
2425 DECLARE_MAC_BUF(mac);
2426
2427 if (priv->iw_mode == IEEE80211_IF_TYPE_AP) {
2428 IWL_ERROR("%s Should not be called in AP mode\n", __FUNCTION__);
2429 return;
2430 }
2431
2432 IWL_DEBUG_ASSOC("Associated as %d to: %s\n",
2433 priv->assoc_id,
2434 print_mac(mac, priv->active_rxon.bssid_addr));
2435
2436
2437 if (test_bit(STATUS_EXIT_PENDING, &priv->status))
2438 return;
2439
2440
2441 if (!priv->vif || !priv->is_open)
2442 return;
2443
2444 iwl_scan_cancel_timeout(priv, 200);
2445
2446 conf = ieee80211_get_hw_conf(priv->hw);
2447
2448 priv->staging_rxon.filter_flags &= ~RXON_FILTER_ASSOC_MSK;
2449 iwl4965_commit_rxon(priv);
2450
2451 memset(&priv->rxon_timing, 0, sizeof(struct iwl4965_rxon_time_cmd));
2452 iwl4965_setup_rxon_timing(priv);
2453 ret = iwl_send_cmd_pdu(priv, REPLY_RXON_TIMING,
2454 sizeof(priv->rxon_timing), &priv->rxon_timing);
2455 if (ret)
2456 IWL_WARNING("REPLY_RXON_TIMING failed - "
2457 "Attempting to continue.\n");
2458
2459 priv->staging_rxon.filter_flags |= RXON_FILTER_ASSOC_MSK;
2460
2461 if (priv->current_ht_config.is_ht)
2462 iwl_set_rxon_ht(priv, &priv->current_ht_config);
2463
2464 iwl_set_rxon_chain(priv);
2465 priv->staging_rxon.assoc_id = cpu_to_le16(priv->assoc_id);
2466
2467 IWL_DEBUG_ASSOC("assoc id %d beacon interval %d\n",
2468 priv->assoc_id, priv->beacon_int);
2469
2470 if (priv->assoc_capability & WLAN_CAPABILITY_SHORT_PREAMBLE)
2471 priv->staging_rxon.flags |= RXON_FLG_SHORT_PREAMBLE_MSK;
2472 else
2473 priv->staging_rxon.flags &= ~RXON_FLG_SHORT_PREAMBLE_MSK;
2474
2475 if (priv->staging_rxon.flags & RXON_FLG_BAND_24G_MSK) {
2476 if (priv->assoc_capability & WLAN_CAPABILITY_SHORT_SLOT_TIME)
2477 priv->staging_rxon.flags |= RXON_FLG_SHORT_SLOT_MSK;
2478 else
2479 priv->staging_rxon.flags &= ~RXON_FLG_SHORT_SLOT_MSK;
2480
2481 if (priv->iw_mode == IEEE80211_IF_TYPE_IBSS)
2482 priv->staging_rxon.flags &= ~RXON_FLG_SHORT_SLOT_MSK;
2483
2484 }
2485
2486 iwl4965_commit_rxon(priv);
2487
2488 switch (priv->iw_mode) {
2489 case IEEE80211_IF_TYPE_STA:
2490 break;
2491
2492 case IEEE80211_IF_TYPE_IBSS:
2493
2494 /* assume default assoc id */
2495 priv->assoc_id = 1;
2496
2497 iwl_rxon_add_station(priv, priv->bssid, 0);
2498 iwl4965_send_beacon_cmd(priv);
2499
2500 break;
2501
2502 default:
2503 IWL_ERROR("%s Should not be called in %d mode\n",
2504 __FUNCTION__, priv->iw_mode);
2505 break;
2506 }
2507
2508 /* Enable Rx differential gain and sensitivity calibrations */
2509 iwl_chain_noise_reset(priv);
2510 priv->start_calib = 1;
2511
2512 if (priv->iw_mode == IEEE80211_IF_TYPE_IBSS)
2513 priv->assoc_station_added = 1;
2514
2515 iwl4965_activate_qos(priv, 0);
2516
2517 iwl_power_update_mode(priv, 0);
2518 /* we have just associated, don't start scan too early */
2519 priv->next_scan_jiffies = jiffies + IWL_DELAY_NEXT_SCAN;
2520 }
2521
2522
2523 static void iwl4965_bg_post_associate(struct work_struct *data)
2524 {
2525 struct iwl_priv *priv = container_of(data, struct iwl_priv,
2526 post_associate.work);
2527
2528 mutex_lock(&priv->mutex);
2529 iwl4965_post_associate(priv);
2530 mutex_unlock(&priv->mutex);
2531
2532 }
2533
2534 static int iwl4965_mac_config(struct ieee80211_hw *hw, struct ieee80211_conf *conf);
2535
2536 static void iwl_bg_scan_completed(struct work_struct *work)
2537 {
2538 struct iwl_priv *priv =
2539 container_of(work, struct iwl_priv, scan_completed);
2540
2541 IWL_DEBUG_SCAN("SCAN complete scan\n");
2542
2543 if (test_bit(STATUS_EXIT_PENDING, &priv->status))
2544 return;
2545
2546 if (test_bit(STATUS_CONF_PENDING, &priv->status))
2547 iwl4965_mac_config(priv->hw, ieee80211_get_hw_conf(priv->hw));
2548
2549 ieee80211_scan_completed(priv->hw);
2550
2551 /* Since setting the TXPOWER may have been deferred while
2552 * performing the scan, fire one off */
2553 mutex_lock(&priv->mutex);
2554 iwl_set_tx_power(priv, priv->tx_power_user_lmt, true);
2555 mutex_unlock(&priv->mutex);
2556 }
2557
2558 /*****************************************************************************
2559 *
2560 * mac80211 entry point functions
2561 *
2562 *****************************************************************************/
2563
2564 #define UCODE_READY_TIMEOUT (4 * HZ)
2565
2566 static int iwl4965_mac_start(struct ieee80211_hw *hw)
2567 {
2568 struct iwl_priv *priv = hw->priv;
2569 int ret;
2570
2571 IWL_DEBUG_MAC80211("enter\n");
2572
2573 if (pci_enable_device(priv->pci_dev)) {
2574 IWL_ERROR("Fail to pci_enable_device\n");
2575 return -ENODEV;
2576 }
2577 pci_restore_state(priv->pci_dev);
2578 pci_enable_msi(priv->pci_dev);
2579
2580 ret = request_irq(priv->pci_dev->irq, iwl4965_isr, IRQF_SHARED,
2581 DRV_NAME, priv);
2582 if (ret) {
2583 IWL_ERROR("Error allocating IRQ %d\n", priv->pci_dev->irq);
2584 goto out_disable_msi;
2585 }
2586
2587 /* we should be verifying the device is ready to be opened */
2588 mutex_lock(&priv->mutex);
2589
2590 memset(&priv->staging_rxon, 0, sizeof(struct iwl_rxon_cmd));
2591 /* fetch ucode file from disk, alloc and copy to bus-master buffers ...
2592 * ucode filename and max sizes are card-specific. */
2593
2594 if (!priv->ucode_code.len) {
2595 ret = iwl4965_read_ucode(priv);
2596 if (ret) {
2597 IWL_ERROR("Could not read microcode: %d\n", ret);
2598 mutex_unlock(&priv->mutex);
2599 goto out_release_irq;
2600 }
2601 }
2602
2603 ret = __iwl4965_up(priv);
2604
2605 mutex_unlock(&priv->mutex);
2606
2607 if (ret)
2608 goto out_release_irq;
2609
2610 IWL_DEBUG_INFO("Start UP work done.\n");
2611
2612 if (test_bit(STATUS_IN_SUSPEND, &priv->status))
2613 return 0;
2614
2615 /* Wait for START_ALIVE from Run Time ucode. Otherwise callbacks from
2616 * mac80211 will not be run successfully. */
2617 ret = wait_event_interruptible_timeout(priv->wait_command_queue,
2618 test_bit(STATUS_READY, &priv->status),
2619 UCODE_READY_TIMEOUT);
2620 if (!ret) {
2621 if (!test_bit(STATUS_READY, &priv->status)) {
2622 IWL_ERROR("START_ALIVE timeout after %dms.\n",
2623 jiffies_to_msecs(UCODE_READY_TIMEOUT));
2624 ret = -ETIMEDOUT;
2625 goto out_release_irq;
2626 }
2627 }
2628
2629 priv->is_open = 1;
2630 IWL_DEBUG_MAC80211("leave\n");
2631 return 0;
2632
2633 out_release_irq:
2634 free_irq(priv->pci_dev->irq, priv);
2635 out_disable_msi:
2636 pci_disable_msi(priv->pci_dev);
2637 pci_disable_device(priv->pci_dev);
2638 priv->is_open = 0;
2639 IWL_DEBUG_MAC80211("leave - failed\n");
2640 return ret;
2641 }
2642
2643 static void iwl4965_mac_stop(struct ieee80211_hw *hw)
2644 {
2645 struct iwl_priv *priv = hw->priv;
2646
2647 IWL_DEBUG_MAC80211("enter\n");
2648
2649 if (!priv->is_open) {
2650 IWL_DEBUG_MAC80211("leave - skip\n");
2651 return;
2652 }
2653
2654 priv->is_open = 0;
2655
2656 if (iwl_is_ready_rf(priv)) {
2657 /* stop mac, cancel any scan request and clear
2658 * RXON_FILTER_ASSOC_MSK BIT
2659 */
2660 mutex_lock(&priv->mutex);
2661 iwl_scan_cancel_timeout(priv, 100);
2662 cancel_delayed_work(&priv->post_associate);
2663 mutex_unlock(&priv->mutex);
2664 }
2665
2666 iwl4965_down(priv);
2667
2668 flush_workqueue(priv->workqueue);
2669 free_irq(priv->pci_dev->irq, priv);
2670 pci_disable_msi(priv->pci_dev);
2671 pci_save_state(priv->pci_dev);
2672 pci_disable_device(priv->pci_dev);
2673
2674 IWL_DEBUG_MAC80211("leave\n");
2675 }
2676
2677 static int iwl4965_mac_tx(struct ieee80211_hw *hw, struct sk_buff *skb)
2678 {
2679 struct iwl_priv *priv = hw->priv;
2680
2681 IWL_DEBUG_MAC80211("enter\n");
2682
2683 if (priv->iw_mode == IEEE80211_IF_TYPE_MNTR) {
2684 IWL_DEBUG_MAC80211("leave - monitor\n");
2685 return -1;
2686 }
2687
2688 IWL_DEBUG_TX("dev->xmit(%d bytes) at rate 0x%02x\n", skb->len,
2689 ieee80211_get_tx_rate(hw, IEEE80211_SKB_CB(skb))->bitrate);
2690
2691 if (iwl_tx_skb(priv, skb))
2692 dev_kfree_skb_any(skb);
2693
2694 IWL_DEBUG_MAC80211("leave\n");
2695 return 0;
2696 }
2697
2698 static int iwl4965_mac_add_interface(struct ieee80211_hw *hw,
2699 struct ieee80211_if_init_conf *conf)
2700 {
2701 struct iwl_priv *priv = hw->priv;
2702 unsigned long flags;
2703 DECLARE_MAC_BUF(mac);
2704
2705 IWL_DEBUG_MAC80211("enter: type %d\n", conf->type);
2706
2707 if (priv->vif) {
2708 IWL_DEBUG_MAC80211("leave - vif != NULL\n");
2709 return -EOPNOTSUPP;
2710 }
2711
2712 spin_lock_irqsave(&priv->lock, flags);
2713 priv->vif = conf->vif;
2714
2715 spin_unlock_irqrestore(&priv->lock, flags);
2716
2717 mutex_lock(&priv->mutex);
2718
2719 if (conf->mac_addr) {
2720 IWL_DEBUG_MAC80211("Set %s\n", print_mac(mac, conf->mac_addr));
2721 memcpy(priv->mac_addr, conf->mac_addr, ETH_ALEN);
2722 }
2723
2724 if (iwl4965_set_mode(priv, conf->type) == -EAGAIN)
2725 /* we are not ready, will run again when ready */
2726 set_bit(STATUS_MODE_PENDING, &priv->status);
2727
2728 mutex_unlock(&priv->mutex);
2729
2730 IWL_DEBUG_MAC80211("leave\n");
2731 return 0;
2732 }
2733
2734 /**
2735 * iwl4965_mac_config - mac80211 config callback
2736 *
2737 * We ignore conf->flags & IEEE80211_CONF_SHORT_SLOT_TIME since it seems to
2738 * be set inappropriately and the driver currently sets the hardware up to
2739 * use it whenever needed.
2740 */
2741 static int iwl4965_mac_config(struct ieee80211_hw *hw, struct ieee80211_conf *conf)
2742 {
2743 struct iwl_priv *priv = hw->priv;
2744 const struct iwl_channel_info *ch_info;
2745 unsigned long flags;
2746 int ret = 0;
2747 u16 channel;
2748
2749 mutex_lock(&priv->mutex);
2750 IWL_DEBUG_MAC80211("enter to channel %d\n", conf->channel->hw_value);
2751
2752 priv->add_radiotap = !!(conf->flags & IEEE80211_CONF_RADIOTAP);
2753
2754 if (conf->radio_enabled && iwl_radio_kill_sw_enable_radio(priv)) {
2755 IWL_DEBUG_MAC80211("leave - RF-KILL - waiting for uCode\n");
2756 goto out;
2757 }
2758
2759 if (!conf->radio_enabled)
2760 iwl_radio_kill_sw_disable_radio(priv);
2761
2762 if (!iwl_is_ready(priv)) {
2763 IWL_DEBUG_MAC80211("leave - not ready\n");
2764 ret = -EIO;
2765 goto out;
2766 }
2767
2768 if (unlikely(!priv->cfg->mod_params->disable_hw_scan &&
2769 test_bit(STATUS_SCANNING, &priv->status))) {
2770 IWL_DEBUG_MAC80211("leave - scanning\n");
2771 set_bit(STATUS_CONF_PENDING, &priv->status);
2772 mutex_unlock(&priv->mutex);
2773 return 0;
2774 }
2775
2776 channel = ieee80211_frequency_to_channel(conf->channel->center_freq);
2777 ch_info = iwl_get_channel_info(priv, conf->channel->band, channel);
2778 if (!is_channel_valid(ch_info)) {
2779 IWL_DEBUG_MAC80211("leave - invalid channel\n");
2780 ret = -EINVAL;
2781 goto out;
2782 }
2783
2784 if (priv->iw_mode == IEEE80211_IF_TYPE_IBSS &&
2785 !is_channel_ibss(ch_info)) {
2786 IWL_ERROR("channel %d in band %d not IBSS channel\n",
2787 conf->channel->hw_value, conf->channel->band);
2788 ret = -EINVAL;
2789 goto out;
2790 }
2791
2792 spin_lock_irqsave(&priv->lock, flags);
2793
2794 /* if we are switching from ht to 2.4 clear flags
2795 * from any ht related info since 2.4 does not
2796 * support ht */
2797 if ((le16_to_cpu(priv->staging_rxon.channel) != channel)
2798 #ifdef IEEE80211_CONF_CHANNEL_SWITCH
2799 && !(conf->flags & IEEE80211_CONF_CHANNEL_SWITCH)
2800 #endif
2801 )
2802 priv->staging_rxon.flags = 0;
2803
2804 iwl_set_rxon_channel(priv, conf->channel->band, channel);
2805
2806 iwl_set_flags_for_band(priv, conf->channel->band);
2807
2808 /* The list of supported rates and rate mask can be different
2809 * for each band; since the band may have changed, reset
2810 * the rate mask to what mac80211 lists */
2811 iwl4965_set_rate(priv);
2812
2813 spin_unlock_irqrestore(&priv->lock, flags);
2814
2815 #ifdef IEEE80211_CONF_CHANNEL_SWITCH
2816 if (conf->flags & IEEE80211_CONF_CHANNEL_SWITCH) {
2817 iwl4965_hw_channel_switch(priv, conf->channel);
2818 goto out;
2819 }
2820 #endif
2821
2822 if (!conf->radio_enabled) {
2823 IWL_DEBUG_MAC80211("leave - radio disabled\n");
2824 goto out;
2825 }
2826
2827 if (iwl_is_rfkill(priv)) {
2828 IWL_DEBUG_MAC80211("leave - RF kill\n");
2829 ret = -EIO;
2830 goto out;
2831 }
2832
2833 IWL_DEBUG_MAC80211("TX Power old=%d new=%d\n",
2834 priv->tx_power_user_lmt, conf->power_level);
2835
2836 iwl_set_tx_power(priv, conf->power_level, false);
2837
2838 iwl4965_set_rate(priv);
2839
2840 if (memcmp(&priv->active_rxon,
2841 &priv->staging_rxon, sizeof(priv->staging_rxon)))
2842 iwl4965_commit_rxon(priv);
2843 else
2844 IWL_DEBUG_INFO("No re-sending same RXON configuration.\n");
2845
2846 IWL_DEBUG_MAC80211("leave\n");
2847
2848 out:
2849 clear_bit(STATUS_CONF_PENDING, &priv->status);
2850 mutex_unlock(&priv->mutex);
2851 return ret;
2852 }
2853
2854 static void iwl4965_config_ap(struct iwl_priv *priv)
2855 {
2856 int ret = 0;
2857
2858 if (test_bit(STATUS_EXIT_PENDING, &priv->status))
2859 return;
2860
2861 /* The following should be done only at AP bring up */
2862 if (!(iwl_is_associated(priv))) {
2863
2864 /* RXON - unassoc (to set timing command) */
2865 priv->staging_rxon.filter_flags &= ~RXON_FILTER_ASSOC_MSK;
2866 iwl4965_commit_rxon(priv);
2867
2868 /* RXON Timing */
2869 memset(&priv->rxon_timing, 0, sizeof(struct iwl4965_rxon_time_cmd));
2870 iwl4965_setup_rxon_timing(priv);
2871 ret = iwl_send_cmd_pdu(priv, REPLY_RXON_TIMING,
2872 sizeof(priv->rxon_timing), &priv->rxon_timing);
2873 if (ret)
2874 IWL_WARNING("REPLY_RXON_TIMING failed - "
2875 "Attempting to continue.\n");
2876
2877 iwl_set_rxon_chain(priv);
2878
2879 /* FIXME: what should be the assoc_id for AP? */
2880 priv->staging_rxon.assoc_id = cpu_to_le16(priv->assoc_id);
2881 if (priv->assoc_capability & WLAN_CAPABILITY_SHORT_PREAMBLE)
2882 priv->staging_rxon.flags |=
2883 RXON_FLG_SHORT_PREAMBLE_MSK;
2884 else
2885 priv->staging_rxon.flags &=
2886 ~RXON_FLG_SHORT_PREAMBLE_MSK;
2887
2888 if (priv->staging_rxon.flags & RXON_FLG_BAND_24G_MSK) {
2889 if (priv->assoc_capability &
2890 WLAN_CAPABILITY_SHORT_SLOT_TIME)
2891 priv->staging_rxon.flags |=
2892 RXON_FLG_SHORT_SLOT_MSK;
2893 else
2894 priv->staging_rxon.flags &=
2895 ~RXON_FLG_SHORT_SLOT_MSK;
2896
2897 if (priv->iw_mode == IEEE80211_IF_TYPE_IBSS)
2898 priv->staging_rxon.flags &=
2899 ~RXON_FLG_SHORT_SLOT_MSK;
2900 }
2901 /* restore RXON assoc */
2902 priv->staging_rxon.filter_flags |= RXON_FILTER_ASSOC_MSK;
2903 iwl4965_commit_rxon(priv);
2904 iwl4965_activate_qos(priv, 1);
2905 iwl_rxon_add_station(priv, iwl_bcast_addr, 0);
2906 }
2907 iwl4965_send_beacon_cmd(priv);
2908
2909 /* FIXME - we need to add code here to detect a totally new
2910 * configuration, reset the AP, unassoc, rxon timing, assoc,
2911 * clear sta table, add BCAST sta... */
2912 }
2913
2914 static int iwl4965_mac_config_interface(struct ieee80211_hw *hw,
2915 struct ieee80211_vif *vif,
2916 struct ieee80211_if_conf *conf)
2917 {
2918 struct iwl_priv *priv = hw->priv;
2919 DECLARE_MAC_BUF(mac);
2920 unsigned long flags;
2921 int rc;
2922
2923 if (conf == NULL)
2924 return -EIO;
2925
2926 if (priv->vif != vif) {
2927 IWL_DEBUG_MAC80211("leave - priv->vif != vif\n");
2928 return 0;
2929 }
2930
2931 if ((priv->iw_mode == IEEE80211_IF_TYPE_AP) &&
2932 (!conf->beacon || !conf->ssid_len)) {
2933 IWL_DEBUG_MAC80211
2934 ("Leaving in AP mode because HostAPD is not ready.\n");
2935 return 0;
2936 }
2937
2938 if (!iwl_is_alive(priv))
2939 return -EAGAIN;
2940
2941 mutex_lock(&priv->mutex);
2942
2943 if (conf->bssid)
2944 IWL_DEBUG_MAC80211("bssid: %s\n",
2945 print_mac(mac, conf->bssid));
2946
2947 /*
2948 * very dubious code was here; the probe filtering flag is never set:
2949 *
2950 if (unlikely(test_bit(STATUS_SCANNING, &priv->status)) &&
2951 !(priv->hw->flags & IEEE80211_HW_NO_PROBE_FILTERING)) {
2952 */
2953
2954 if (priv->iw_mode == IEEE80211_IF_TYPE_AP) {
2955 if (!conf->bssid) {
2956 conf->bssid = priv->mac_addr;
2957 memcpy(priv->bssid, priv->mac_addr, ETH_ALEN);
2958 IWL_DEBUG_MAC80211("bssid was set to: %s\n",
2959 print_mac(mac, conf->bssid));
2960 }
2961 if (priv->ibss_beacon)
2962 dev_kfree_skb(priv->ibss_beacon);
2963
2964 priv->ibss_beacon = conf->beacon;
2965 }
2966
2967 if (iwl_is_rfkill(priv))
2968 goto done;
2969
2970 if (conf->bssid && !is_zero_ether_addr(conf->bssid) &&
2971 !is_multicast_ether_addr(conf->bssid)) {
2972 /* If there is currently a HW scan going on in the background
2973 * then we need to cancel it else the RXON below will fail. */
2974 if (iwl_scan_cancel_timeout(priv, 100)) {
2975 IWL_WARNING("Aborted scan still in progress "
2976 "after 100ms\n");
2977 IWL_DEBUG_MAC80211("leaving - scan abort failed.\n");
2978 mutex_unlock(&priv->mutex);
2979 return -EAGAIN;
2980 }
2981 memcpy(priv->staging_rxon.bssid_addr, conf->bssid, ETH_ALEN);
2982
2983 /* TODO: Audit driver for usage of these members and see
2984 * if mac80211 deprecates them (priv->bssid looks like it
2985 * shouldn't be there, but I haven't scanned the IBSS code
2986 * to verify) - jpk */
2987 memcpy(priv->bssid, conf->bssid, ETH_ALEN);
2988
2989 if (priv->iw_mode == IEEE80211_IF_TYPE_AP)
2990 iwl4965_config_ap(priv);
2991 else {
2992 rc = iwl4965_commit_rxon(priv);
2993 if ((priv->iw_mode == IEEE80211_IF_TYPE_STA) && rc)
2994 iwl_rxon_add_station(
2995 priv, priv->active_rxon.bssid_addr, 1);
2996 }
2997
2998 } else {
2999 iwl_scan_cancel_timeout(priv, 100);
3000 priv->staging_rxon.filter_flags &= ~RXON_FILTER_ASSOC_MSK;
3001 iwl4965_commit_rxon(priv);
3002 }
3003
3004 done:
3005 spin_lock_irqsave(&priv->lock, flags);
3006 if (!conf->ssid_len)
3007 memset(priv->essid, 0, IW_ESSID_MAX_SIZE);
3008 else
3009 memcpy(priv->essid, conf->ssid, conf->ssid_len);
3010
3011 priv->essid_len = conf->ssid_len;
3012 spin_unlock_irqrestore(&priv->lock, flags);
3013
3014 IWL_DEBUG_MAC80211("leave\n");
3015 mutex_unlock(&priv->mutex);
3016
3017 return 0;
3018 }
3019
3020 static void iwl4965_configure_filter(struct ieee80211_hw *hw,
3021 unsigned int changed_flags,
3022 unsigned int *total_flags,
3023 int mc_count, struct dev_addr_list *mc_list)
3024 {
3025 struct iwl_priv *priv = hw->priv;
3026
3027 if (changed_flags & (*total_flags) & FIF_OTHER_BSS) {
3028 IWL_DEBUG_MAC80211("Enter: type %d (0x%x, 0x%x)\n",
3029 IEEE80211_IF_TYPE_MNTR,
3030 changed_flags, *total_flags);
3031 /* queue work 'cuz mac80211 is holding a lock which
3032 * prevents us from issuing (synchronous) f/w cmds */
3033 queue_work(priv->workqueue, &priv->set_monitor);
3034 }
3035 *total_flags &= FIF_OTHER_BSS | FIF_ALLMULTI |
3036 FIF_BCN_PRBRESP_PROMISC | FIF_CONTROL;
3037 }
3038
3039 static void iwl4965_mac_remove_interface(struct ieee80211_hw *hw,
3040 struct ieee80211_if_init_conf *conf)
3041 {
3042 struct iwl_priv *priv = hw->priv;
3043
3044 IWL_DEBUG_MAC80211("enter\n");
3045
3046 mutex_lock(&priv->mutex);
3047
3048 if (iwl_is_ready_rf(priv)) {
3049 iwl_scan_cancel_timeout(priv, 100);
3050 cancel_delayed_work(&priv->post_associate);
3051 priv->staging_rxon.filter_flags &= ~RXON_FILTER_ASSOC_MSK;
3052 iwl4965_commit_rxon(priv);
3053 }
3054 if (priv->vif == conf->vif) {
3055 priv->vif = NULL;
3056 memset(priv->bssid, 0, ETH_ALEN);
3057 memset(priv->essid, 0, IW_ESSID_MAX_SIZE);
3058 priv->essid_len = 0;
3059 }
3060 mutex_unlock(&priv->mutex);
3061
3062 IWL_DEBUG_MAC80211("leave\n");
3063
3064 }
3065
3066 #define IWL_DELAY_NEXT_SCAN_AFTER_ASSOC (HZ*6)
3067 static void iwl4965_bss_info_changed(struct ieee80211_hw *hw,
3068 struct ieee80211_vif *vif,
3069 struct ieee80211_bss_conf *bss_conf,
3070 u32 changes)
3071 {
3072 struct iwl_priv *priv = hw->priv;
3073
3074 IWL_DEBUG_MAC80211("changes = 0x%X\n", changes);
3075
3076 if (changes & BSS_CHANGED_ERP_PREAMBLE) {
3077 IWL_DEBUG_MAC80211("ERP_PREAMBLE %d\n",
3078 bss_conf->use_short_preamble);
3079 if (bss_conf->use_short_preamble)
3080 priv->staging_rxon.flags |= RXON_FLG_SHORT_PREAMBLE_MSK;
3081 else
3082 priv->staging_rxon.flags &= ~RXON_FLG_SHORT_PREAMBLE_MSK;
3083 }
3084
3085 if (changes & BSS_CHANGED_ERP_CTS_PROT) {
3086 IWL_DEBUG_MAC80211("ERP_CTS %d\n", bss_conf->use_cts_prot);
3087 if (bss_conf->use_cts_prot && (priv->band != IEEE80211_BAND_5GHZ))
3088 priv->staging_rxon.flags |= RXON_FLG_TGG_PROTECT_MSK;
3089 else
3090 priv->staging_rxon.flags &= ~RXON_FLG_TGG_PROTECT_MSK;
3091 }
3092
3093 if (changes & BSS_CHANGED_HT) {
3094 IWL_DEBUG_MAC80211("HT %d\n", bss_conf->assoc_ht);
3095 iwl4965_ht_conf(priv, bss_conf);
3096 iwl_set_rxon_chain(priv);
3097 }
3098
3099 if (changes & BSS_CHANGED_ASSOC) {
3100 IWL_DEBUG_MAC80211("ASSOC %d\n", bss_conf->assoc);
3101 /* This should never happen as this function should
3102 * never be called from interrupt context. */
3103 if (WARN_ON_ONCE(in_interrupt()))
3104 return;
3105 if (bss_conf->assoc) {
3106 priv->assoc_id = bss_conf->aid;
3107 priv->beacon_int = bss_conf->beacon_int;
3108 priv->timestamp = bss_conf->timestamp;
3109 priv->assoc_capability = bss_conf->assoc_capability;
3110 priv->next_scan_jiffies = jiffies +
3111 IWL_DELAY_NEXT_SCAN_AFTER_ASSOC;
3112 mutex_lock(&priv->mutex);
3113 iwl4965_post_associate(priv);
3114 mutex_unlock(&priv->mutex);
3115 } else {
3116 priv->assoc_id = 0;
3117 IWL_DEBUG_MAC80211("DISASSOC %d\n", bss_conf->assoc);
3118 }
3119 } else if (changes && iwl_is_associated(priv) && priv->assoc_id) {
3120 IWL_DEBUG_MAC80211("Associated Changes %d\n", changes);
3121 iwl_send_rxon_assoc(priv);
3122 }
3123
3124 }
3125
3126 static int iwl4965_mac_hw_scan(struct ieee80211_hw *hw, u8 *ssid, size_t len)
3127 {
3128 int rc = 0;
3129 unsigned long flags;
3130 struct iwl_priv *priv = hw->priv;
3131
3132 IWL_DEBUG_MAC80211("enter\n");
3133
3134 mutex_lock(&priv->mutex);
3135 spin_lock_irqsave(&priv->lock, flags);
3136
3137 if (!iwl_is_ready_rf(priv)) {
3138 rc = -EIO;
3139 IWL_DEBUG_MAC80211("leave - not ready or exit pending\n");
3140 goto out_unlock;
3141 }
3142
3143 if (priv->iw_mode == IEEE80211_IF_TYPE_AP) { /* APs don't scan */
3144 rc = -EIO;
3145 IWL_ERROR("ERROR: APs don't scan\n");
3146 goto out_unlock;
3147 }
3148
3149 /* we don't schedule scan within next_scan_jiffies period */
3150 if (priv->next_scan_jiffies &&
3151 time_after(priv->next_scan_jiffies, jiffies)) {
3152 rc = -EAGAIN;
3153 goto out_unlock;
3154 }
3155 /* if we just finished scan ask for delay */
3156 if (priv->last_scan_jiffies && time_after(priv->last_scan_jiffies +
3157 IWL_DELAY_NEXT_SCAN, jiffies)) {
3158 rc = -EAGAIN;
3159 goto out_unlock;
3160 }
3161 if (len) {
3162 IWL_DEBUG_SCAN("direct scan for %s [%d]\n ",
3163 iwl_escape_essid(ssid, len), (int)len);
3164
3165 priv->one_direct_scan = 1;
3166 priv->direct_ssid_len = (u8)
3167 min((u8) len, (u8) IW_ESSID_MAX_SIZE);
3168 memcpy(priv->direct_ssid, ssid, priv->direct_ssid_len);
3169 } else
3170 priv->one_direct_scan = 0;
3171
3172 rc = iwl_scan_initiate(priv);
3173
3174 IWL_DEBUG_MAC80211("leave\n");
3175
3176 out_unlock:
3177 spin_unlock_irqrestore(&priv->lock, flags);
3178 mutex_unlock(&priv->mutex);
3179
3180 return rc;
3181 }
3182
3183 static void iwl4965_mac_update_tkip_key(struct ieee80211_hw *hw,
3184 struct ieee80211_key_conf *keyconf, const u8 *addr,
3185 u32 iv32, u16 *phase1key)
3186 {
3187 struct iwl_priv *priv = hw->priv;
3188 u8 sta_id = IWL_INVALID_STATION;
3189 unsigned long flags;
3190 __le16 key_flags = 0;
3191 int i;
3192 DECLARE_MAC_BUF(mac);
3193
3194 IWL_DEBUG_MAC80211("enter\n");
3195
3196 sta_id = iwl_find_station(priv, addr);
3197 if (sta_id == IWL_INVALID_STATION) {
3198 IWL_DEBUG_MAC80211("leave - %s not in station map.\n",
3199 print_mac(mac, addr));
3200 return;
3201 }
3202
3203 iwl_scan_cancel_timeout(priv, 100);
3204
3205 key_flags |= (STA_KEY_FLG_TKIP | STA_KEY_FLG_MAP_KEY_MSK);
3206 key_flags |= cpu_to_le16(keyconf->keyidx << STA_KEY_FLG_KEYID_POS);
3207 key_flags &= ~STA_KEY_FLG_INVALID;
3208
3209 if (sta_id == priv->hw_params.bcast_sta_id)
3210 key_flags |= STA_KEY_MULTICAST_MSK;
3211
3212 spin_lock_irqsave(&priv->sta_lock, flags);
3213
3214 priv->stations[sta_id].sta.key.key_flags = key_flags;
3215 priv->stations[sta_id].sta.key.tkip_rx_tsc_byte2 = (u8) iv32;
3216
3217 for (i = 0; i < 5; i++)
3218 priv->stations[sta_id].sta.key.tkip_rx_ttak[i] =
3219 cpu_to_le16(phase1key[i]);
3220
3221 priv->stations[sta_id].sta.sta.modify_mask = STA_MODIFY_KEY_MASK;
3222 priv->stations[sta_id].sta.mode = STA_CONTROL_MODIFY_MSK;
3223
3224 iwl_send_add_sta(priv, &priv->stations[sta_id].sta, CMD_ASYNC);
3225
3226 spin_unlock_irqrestore(&priv->sta_lock, flags);
3227
3228 IWL_DEBUG_MAC80211("leave\n");
3229 }
3230
3231 static int iwl4965_mac_set_key(struct ieee80211_hw *hw, enum set_key_cmd cmd,
3232 const u8 *local_addr, const u8 *addr,
3233 struct ieee80211_key_conf *key)
3234 {
3235 struct iwl_priv *priv = hw->priv;
3236 DECLARE_MAC_BUF(mac);
3237 int ret = 0;
3238 u8 sta_id = IWL_INVALID_STATION;
3239 u8 is_default_wep_key = 0;
3240
3241 IWL_DEBUG_MAC80211("enter\n");
3242
3243 if (priv->hw_params.sw_crypto) {
3244 IWL_DEBUG_MAC80211("leave - hwcrypto disabled\n");
3245 return -EOPNOTSUPP;
3246 }
3247
3248 if (is_zero_ether_addr(addr))
3249 /* only support pairwise keys */
3250 return -EOPNOTSUPP;
3251
3252 sta_id = iwl_find_station(priv, addr);
3253 if (sta_id == IWL_INVALID_STATION) {
3254 IWL_DEBUG_MAC80211("leave - %s not in station map.\n",
3255 print_mac(mac, addr));
3256 return -EINVAL;
3257
3258 }
3259
3260 mutex_lock(&priv->mutex);
3261 iwl_scan_cancel_timeout(priv, 100);
3262 mutex_unlock(&priv->mutex);
3263
3264 /* If we are getting WEP group key and we didn't receive any key mapping
3265 * so far, we are in legacy wep mode (group key only), otherwise we are
3266 * in 1X mode.
3267 * In legacy wep mode, we use another host command to the uCode */
3268 if (key->alg == ALG_WEP && sta_id == priv->hw_params.bcast_sta_id &&
3269 priv->iw_mode != IEEE80211_IF_TYPE_AP) {
3270 if (cmd == SET_KEY)
3271 is_default_wep_key = !priv->key_mapping_key;
3272 else
3273 is_default_wep_key =
3274 (key->hw_key_idx == HW_KEY_DEFAULT);
3275 }
3276
3277 switch (cmd) {
3278 case SET_KEY:
3279 if (is_default_wep_key)
3280 ret = iwl_set_default_wep_key(priv, key);
3281 else
3282 ret = iwl_set_dynamic_key(priv, key, sta_id);
3283
3284 IWL_DEBUG_MAC80211("enable hwcrypto key\n");
3285 break;
3286 case DISABLE_KEY:
3287 if (is_default_wep_key)
3288 ret = iwl_remove_default_wep_key(priv, key);
3289 else
3290 ret = iwl_remove_dynamic_key(priv, key, sta_id);
3291
3292 IWL_DEBUG_MAC80211("disable hwcrypto key\n");
3293 break;
3294 default:
3295 ret = -EINVAL;
3296 }
3297
3298 IWL_DEBUG_MAC80211("leave\n");
3299
3300 return ret;
3301 }
3302
3303 static int iwl4965_mac_conf_tx(struct ieee80211_hw *hw, u16 queue,
3304 const struct ieee80211_tx_queue_params *params)
3305 {
3306 struct iwl_priv *priv = hw->priv;
3307 unsigned long flags;
3308 int q;
3309
3310 IWL_DEBUG_MAC80211("enter\n");
3311
3312 if (!iwl_is_ready_rf(priv)) {
3313 IWL_DEBUG_MAC80211("leave - RF not ready\n");
3314 return -EIO;
3315 }
3316
3317 if (queue >= AC_NUM) {
3318 IWL_DEBUG_MAC80211("leave - queue >= AC_NUM %d\n", queue);
3319 return 0;
3320 }
3321
3322 if (!priv->qos_data.qos_enable) {
3323 priv->qos_data.qos_active = 0;
3324 IWL_DEBUG_MAC80211("leave - qos not enabled\n");
3325 return 0;
3326 }
3327 q = AC_NUM - 1 - queue;
3328
3329 spin_lock_irqsave(&priv->lock, flags);
3330
3331 priv->qos_data.def_qos_parm.ac[q].cw_min = cpu_to_le16(params->cw_min);
3332 priv->qos_data.def_qos_parm.ac[q].cw_max = cpu_to_le16(params->cw_max);
3333 priv->qos_data.def_qos_parm.ac[q].aifsn = params->aifs;
3334 priv->qos_data.def_qos_parm.ac[q].edca_txop =
3335 cpu_to_le16((params->txop * 32));
3336
3337 priv->qos_data.def_qos_parm.ac[q].reserved1 = 0;
3338 priv->qos_data.qos_active = 1;
3339
3340 spin_unlock_irqrestore(&priv->lock, flags);
3341
3342 mutex_lock(&priv->mutex);
3343 if (priv->iw_mode == IEEE80211_IF_TYPE_AP)
3344 iwl4965_activate_qos(priv, 1);
3345 else if (priv->assoc_id && iwl_is_associated(priv))
3346 iwl4965_activate_qos(priv, 0);
3347
3348 mutex_unlock(&priv->mutex);
3349
3350 IWL_DEBUG_MAC80211("leave\n");
3351 return 0;
3352 }
3353
3354 static int iwl4965_mac_get_tx_stats(struct ieee80211_hw *hw,
3355 struct ieee80211_tx_queue_stats *stats)
3356 {
3357 struct iwl_priv *priv = hw->priv;
3358 int i, avail;
3359 struct iwl_tx_queue *txq;
3360 struct iwl_queue *q;
3361 unsigned long flags;
3362
3363 IWL_DEBUG_MAC80211("enter\n");
3364
3365 if (!iwl_is_ready_rf(priv)) {
3366 IWL_DEBUG_MAC80211("leave - RF not ready\n");
3367 return -EIO;
3368 }
3369
3370 spin_lock_irqsave(&priv->lock, flags);
3371
3372 for (i = 0; i < AC_NUM; i++) {
3373 txq = &priv->txq[i];
3374 q = &txq->q;
3375 avail = iwl_queue_space(q);
3376
3377 stats[i].len = q->n_window - avail;
3378 stats[i].limit = q->n_window - q->high_mark;
3379 stats[i].count = q->n_window;
3380
3381 }
3382 spin_unlock_irqrestore(&priv->lock, flags);
3383
3384 IWL_DEBUG_MAC80211("leave\n");
3385
3386 return 0;
3387 }
3388
3389 static int iwl4965_mac_get_stats(struct ieee80211_hw *hw,
3390 struct ieee80211_low_level_stats *stats)
3391 {
3392 struct iwl_priv *priv = hw->priv;
3393
3394 priv = hw->priv;
3395 IWL_DEBUG_MAC80211("enter\n");
3396 IWL_DEBUG_MAC80211("leave\n");
3397
3398 return 0;
3399 }
3400
3401 static void iwl4965_mac_reset_tsf(struct ieee80211_hw *hw)
3402 {
3403 struct iwl_priv *priv = hw->priv;
3404 unsigned long flags;
3405
3406 mutex_lock(&priv->mutex);
3407 IWL_DEBUG_MAC80211("enter\n");
3408
3409 spin_lock_irqsave(&priv->lock, flags);
3410 memset(&priv->current_ht_config, 0, sizeof(struct iwl_ht_info));
3411 spin_unlock_irqrestore(&priv->lock, flags);
3412
3413 iwl_reset_qos(priv);
3414
3415 cancel_delayed_work(&priv->post_associate);
3416
3417 spin_lock_irqsave(&priv->lock, flags);
3418 priv->assoc_id = 0;
3419 priv->assoc_capability = 0;
3420 priv->assoc_station_added = 0;
3421
3422 /* new association get rid of ibss beacon skb */
3423 if (priv->ibss_beacon)
3424 dev_kfree_skb(priv->ibss_beacon);
3425
3426 priv->ibss_beacon = NULL;
3427
3428 priv->beacon_int = priv->hw->conf.beacon_int;
3429 priv->timestamp = 0;
3430 if ((priv->iw_mode == IEEE80211_IF_TYPE_STA))
3431 priv->beacon_int = 0;
3432
3433 spin_unlock_irqrestore(&priv->lock, flags);
3434
3435 if (!iwl_is_ready_rf(priv)) {
3436 IWL_DEBUG_MAC80211("leave - not ready\n");
3437 mutex_unlock(&priv->mutex);
3438 return;
3439 }
3440
3441 /* we are restarting association process
3442 * clear RXON_FILTER_ASSOC_MSK bit
3443 */
3444 if (priv->iw_mode != IEEE80211_IF_TYPE_AP) {
3445 iwl_scan_cancel_timeout(priv, 100);
3446 priv->staging_rxon.filter_flags &= ~RXON_FILTER_ASSOC_MSK;
3447 iwl4965_commit_rxon(priv);
3448 }
3449
3450 iwl_power_update_mode(priv, 0);
3451
3452 /* Per mac80211.h: This is only used in IBSS mode... */
3453 if (priv->iw_mode != IEEE80211_IF_TYPE_IBSS) {
3454
3455 IWL_DEBUG_MAC80211("leave - not in IBSS\n");
3456 mutex_unlock(&priv->mutex);
3457 return;
3458 }
3459
3460 iwl4965_set_rate(priv);
3461
3462 mutex_unlock(&priv->mutex);
3463
3464 IWL_DEBUG_MAC80211("leave\n");
3465 }
3466
3467 static int iwl4965_mac_beacon_update(struct ieee80211_hw *hw, struct sk_buff *skb)
3468 {
3469 struct iwl_priv *priv = hw->priv;
3470 unsigned long flags;
3471 __le64 timestamp;
3472
3473 mutex_lock(&priv->mutex);
3474 IWL_DEBUG_MAC80211("enter\n");
3475
3476 if (!iwl_is_ready_rf(priv)) {
3477 IWL_DEBUG_MAC80211("leave - RF not ready\n");
3478 mutex_unlock(&priv->mutex);
3479 return -EIO;
3480 }
3481
3482 if (priv->iw_mode != IEEE80211_IF_TYPE_IBSS) {
3483 IWL_DEBUG_MAC80211("leave - not IBSS\n");
3484 mutex_unlock(&priv->mutex);
3485 return -EIO;
3486 }
3487
3488 spin_lock_irqsave(&priv->lock, flags);
3489
3490 if (priv->ibss_beacon)
3491 dev_kfree_skb(priv->ibss_beacon);
3492
3493 priv->ibss_beacon = skb;
3494
3495 priv->assoc_id = 0;
3496 timestamp = ((struct ieee80211_mgmt *)skb->data)->u.beacon.timestamp;
3497 priv->timestamp = le64_to_cpu(timestamp) + (priv->beacon_int * 1000);
3498
3499 IWL_DEBUG_MAC80211("leave\n");
3500 spin_unlock_irqrestore(&priv->lock, flags);
3501
3502 iwl_reset_qos(priv);
3503
3504 iwl4965_post_associate(priv);
3505
3506 mutex_unlock(&priv->mutex);
3507
3508 return 0;
3509 }
3510
3511 /*****************************************************************************
3512 *
3513 * sysfs attributes
3514 *
3515 *****************************************************************************/
3516
3517 #ifdef CONFIG_IWLWIFI_DEBUG
3518
3519 /*
3520 * The following adds a new attribute to the sysfs representation
3521 * of this device driver (i.e. a new file in /sys/bus/pci/drivers/iwl/)
3522 * used for controlling the debug level.
3523 *
3524 * See the level definitions in iwl for details.
3525 */
3526
3527 static ssize_t show_debug_level(struct device *d,
3528 struct device_attribute *attr, char *buf)
3529 {
3530 struct iwl_priv *priv = d->driver_data;
3531
3532 return sprintf(buf, "0x%08X\n", priv->debug_level);
3533 }
3534 static ssize_t store_debug_level(struct device *d,
3535 struct device_attribute *attr,
3536 const char *buf, size_t count)
3537 {
3538 struct iwl_priv *priv = d->driver_data;
3539 char *p = (char *)buf;
3540 u32 val;
3541
3542 val = simple_strtoul(p, &p, 0);
3543 if (p == buf)
3544 printk(KERN_INFO DRV_NAME
3545 ": %s is not in hex or decimal form.\n", buf);
3546 else
3547 priv->debug_level = val;
3548
3549 return strnlen(buf, count);
3550 }
3551
3552 static DEVICE_ATTR(debug_level, S_IWUSR | S_IRUGO,
3553 show_debug_level, store_debug_level);
3554
3555
3556 #endif /* CONFIG_IWLWIFI_DEBUG */
3557
3558
3559 static ssize_t show_version(struct device *d,
3560 struct device_attribute *attr, char *buf)
3561 {
3562 struct iwl_priv *priv = d->driver_data;
3563 struct iwl_alive_resp *palive = &priv->card_alive;
3564 ssize_t pos = 0;
3565 u16 eeprom_ver;
3566
3567 if (palive->is_valid)
3568 pos += sprintf(buf + pos,
3569 "fw version: 0x%01X.0x%01X.0x%01X.0x%01X\n"
3570 "fw type: 0x%01X 0x%01X\n",
3571 palive->ucode_major, palive->ucode_minor,
3572 palive->sw_rev[0], palive->sw_rev[1],
3573 palive->ver_type, palive->ver_subtype);
3574 else
3575 pos += sprintf(buf + pos, "fw not loaded\n");
3576
3577 if (priv->eeprom) {
3578 eeprom_ver = iwl_eeprom_query16(priv, EEPROM_VERSION);
3579 pos += sprintf(buf + pos, "EEPROM version: 0x%x\n",
3580 eeprom_ver);
3581 } else {
3582 pos += sprintf(buf + pos, "EEPROM not initialzed\n");
3583 }
3584
3585 return pos;
3586 }
3587
3588 static DEVICE_ATTR(version, S_IWUSR | S_IRUGO, show_version, NULL);
3589
3590 static ssize_t show_temperature(struct device *d,
3591 struct device_attribute *attr, char *buf)
3592 {
3593 struct iwl_priv *priv = (struct iwl_priv *)d->driver_data;
3594
3595 if (!iwl_is_alive(priv))
3596 return -EAGAIN;
3597
3598 return sprintf(buf, "%d\n", priv->temperature);
3599 }
3600
3601 static DEVICE_ATTR(temperature, S_IRUGO, show_temperature, NULL);
3602
3603 static ssize_t show_rs_window(struct device *d,
3604 struct device_attribute *attr,
3605 char *buf)
3606 {
3607 struct iwl_priv *priv = d->driver_data;
3608 return iwl4965_fill_rs_info(priv->hw, buf, IWL_AP_ID);
3609 }
3610 static DEVICE_ATTR(rs_window, S_IRUGO, show_rs_window, NULL);
3611
3612 static ssize_t show_tx_power(struct device *d,
3613 struct device_attribute *attr, char *buf)
3614 {
3615 struct iwl_priv *priv = (struct iwl_priv *)d->driver_data;
3616 return sprintf(buf, "%d\n", priv->tx_power_user_lmt);
3617 }
3618
3619 static ssize_t store_tx_power(struct device *d,
3620 struct device_attribute *attr,
3621 const char *buf, size_t count)
3622 {
3623 struct iwl_priv *priv = (struct iwl_priv *)d->driver_data;
3624 char *p = (char *)buf;
3625 u32 val;
3626
3627 val = simple_strtoul(p, &p, 10);
3628 if (p == buf)
3629 printk(KERN_INFO DRV_NAME
3630 ": %s is not in decimal form.\n", buf);
3631 else
3632 iwl_set_tx_power(priv, val, false);
3633
3634 return count;
3635 }
3636
3637 static DEVICE_ATTR(tx_power, S_IWUSR | S_IRUGO, show_tx_power, store_tx_power);
3638
3639 static ssize_t show_flags(struct device *d,
3640 struct device_attribute *attr, char *buf)
3641 {
3642 struct iwl_priv *priv = (struct iwl_priv *)d->driver_data;
3643
3644 return sprintf(buf, "0x%04X\n", priv->active_rxon.flags);
3645 }
3646
3647 static ssize_t store_flags(struct device *d,
3648 struct device_attribute *attr,
3649 const char *buf, size_t count)
3650 {
3651 struct iwl_priv *priv = (struct iwl_priv *)d->driver_data;
3652 u32 flags = simple_strtoul(buf, NULL, 0);
3653
3654 mutex_lock(&priv->mutex);
3655 if (le32_to_cpu(priv->staging_rxon.flags) != flags) {
3656 /* Cancel any currently running scans... */
3657 if (iwl_scan_cancel_timeout(priv, 100))
3658 IWL_WARNING("Could not cancel scan.\n");
3659 else {
3660 IWL_DEBUG_INFO("Committing rxon.flags = 0x%04X\n",
3661 flags);
3662 priv->staging_rxon.flags = cpu_to_le32(flags);
3663 iwl4965_commit_rxon(priv);
3664 }
3665 }
3666 mutex_unlock(&priv->mutex);
3667
3668 return count;
3669 }
3670
3671 static DEVICE_ATTR(flags, S_IWUSR | S_IRUGO, show_flags, store_flags);
3672
3673 static ssize_t show_filter_flags(struct device *d,
3674 struct device_attribute *attr, char *buf)
3675 {
3676 struct iwl_priv *priv = (struct iwl_priv *)d->driver_data;
3677
3678 return sprintf(buf, "0x%04X\n",
3679 le32_to_cpu(priv->active_rxon.filter_flags));
3680 }
3681
3682 static ssize_t store_filter_flags(struct device *d,
3683 struct device_attribute *attr,
3684 const char *buf, size_t count)
3685 {
3686 struct iwl_priv *priv = (struct iwl_priv *)d->driver_data;
3687 u32 filter_flags = simple_strtoul(buf, NULL, 0);
3688
3689 mutex_lock(&priv->mutex);
3690 if (le32_to_cpu(priv->staging_rxon.filter_flags) != filter_flags) {
3691 /* Cancel any currently running scans... */
3692 if (iwl_scan_cancel_timeout(priv, 100))
3693 IWL_WARNING("Could not cancel scan.\n");
3694 else {
3695 IWL_DEBUG_INFO("Committing rxon.filter_flags = "
3696 "0x%04X\n", filter_flags);
3697 priv->staging_rxon.filter_flags =
3698 cpu_to_le32(filter_flags);
3699 iwl4965_commit_rxon(priv);
3700 }
3701 }
3702 mutex_unlock(&priv->mutex);
3703
3704 return count;
3705 }
3706
3707 static DEVICE_ATTR(filter_flags, S_IWUSR | S_IRUGO, show_filter_flags,
3708 store_filter_flags);
3709
3710 #ifdef CONFIG_IWL4965_SPECTRUM_MEASUREMENT
3711
3712 static ssize_t show_measurement(struct device *d,
3713 struct device_attribute *attr, char *buf)
3714 {
3715 struct iwl_priv *priv = dev_get_drvdata(d);
3716 struct iwl4965_spectrum_notification measure_report;
3717 u32 size = sizeof(measure_report), len = 0, ofs = 0;
3718 u8 *data = (u8 *) & measure_report;
3719 unsigned long flags;
3720
3721 spin_lock_irqsave(&priv->lock, flags);
3722 if (!(priv->measurement_status & MEASUREMENT_READY)) {
3723 spin_unlock_irqrestore(&priv->lock, flags);
3724 return 0;
3725 }
3726 memcpy(&measure_report, &priv->measure_report, size);
3727 priv->measurement_status = 0;
3728 spin_unlock_irqrestore(&priv->lock, flags);
3729
3730 while (size && (PAGE_SIZE - len)) {
3731 hex_dump_to_buffer(data + ofs, size, 16, 1, buf + len,
3732 PAGE_SIZE - len, 1);
3733 len = strlen(buf);
3734 if (PAGE_SIZE - len)
3735 buf[len++] = '\n';
3736
3737 ofs += 16;
3738 size -= min(size, 16U);
3739 }
3740
3741 return len;
3742 }
3743
3744 static ssize_t store_measurement(struct device *d,
3745 struct device_attribute *attr,
3746 const char *buf, size_t count)
3747 {
3748 struct iwl_priv *priv = dev_get_drvdata(d);
3749 struct ieee80211_measurement_params params = {
3750 .channel = le16_to_cpu(priv->active_rxon.channel),
3751 .start_time = cpu_to_le64(priv->last_tsf),
3752 .duration = cpu_to_le16(1),
3753 };
3754 u8 type = IWL_MEASURE_BASIC;
3755 u8 buffer[32];
3756 u8 channel;
3757
3758 if (count) {
3759 char *p = buffer;
3760 strncpy(buffer, buf, min(sizeof(buffer), count));
3761 channel = simple_strtoul(p, NULL, 0);
3762 if (channel)
3763 params.channel = channel;
3764
3765 p = buffer;
3766 while (*p && *p != ' ')
3767 p++;
3768 if (*p)
3769 type = simple_strtoul(p + 1, NULL, 0);
3770 }
3771
3772 IWL_DEBUG_INFO("Invoking measurement of type %d on "
3773 "channel %d (for '%s')\n", type, params.channel, buf);
3774 iwl4965_get_measurement(priv, &params, type);
3775
3776 return count;
3777 }
3778
3779 static DEVICE_ATTR(measurement, S_IRUSR | S_IWUSR,
3780 show_measurement, store_measurement);
3781 #endif /* CONFIG_IWL4965_SPECTRUM_MEASUREMENT */
3782
3783 static ssize_t store_retry_rate(struct device *d,
3784 struct device_attribute *attr,
3785 const char *buf, size_t count)
3786 {
3787 struct iwl_priv *priv = dev_get_drvdata(d);
3788
3789 priv->retry_rate = simple_strtoul(buf, NULL, 0);
3790 if (priv->retry_rate <= 0)
3791 priv->retry_rate = 1;
3792
3793 return count;
3794 }
3795
3796 static ssize_t show_retry_rate(struct device *d,
3797 struct device_attribute *attr, char *buf)
3798 {
3799 struct iwl_priv *priv = dev_get_drvdata(d);
3800 return sprintf(buf, "%d", priv->retry_rate);
3801 }
3802
3803 static DEVICE_ATTR(retry_rate, S_IWUSR | S_IRUSR, show_retry_rate,
3804 store_retry_rate);
3805
3806 static ssize_t store_power_level(struct device *d,
3807 struct device_attribute *attr,
3808 const char *buf, size_t count)
3809 {
3810 struct iwl_priv *priv = dev_get_drvdata(d);
3811 int rc;
3812 int mode;
3813
3814 mode = simple_strtoul(buf, NULL, 0);
3815 mutex_lock(&priv->mutex);
3816
3817 if (!iwl_is_ready(priv)) {
3818 rc = -EAGAIN;
3819 goto out;
3820 }
3821
3822 rc = iwl_power_set_user_mode(priv, mode);
3823 if (rc) {
3824 IWL_DEBUG_MAC80211("failed setting power mode.\n");
3825 goto out;
3826 }
3827 rc = count;
3828
3829 out:
3830 mutex_unlock(&priv->mutex);
3831 return rc;
3832 }
3833
3834 #define MAX_WX_STRING 80
3835
3836 /* Values are in microsecond */
3837 static const s32 timeout_duration[] = {
3838 350000,
3839 250000,
3840 75000,
3841 37000,
3842 25000,
3843 };
3844 static const s32 period_duration[] = {
3845 400000,
3846 700000,
3847 1000000,
3848 1000000,
3849 1000000
3850 };
3851
3852 static ssize_t show_power_level(struct device *d,
3853 struct device_attribute *attr, char *buf)
3854 {
3855 struct iwl_priv *priv = dev_get_drvdata(d);
3856 int level = priv->power_data.power_mode;
3857 char *p = buf;
3858
3859 p += sprintf(p, "%d ", level);
3860 switch (level) {
3861 case IWL_POWER_MODE_CAM:
3862 case IWL_POWER_AC:
3863 p += sprintf(p, "(AC)");
3864 break;
3865 case IWL_POWER_BATTERY:
3866 p += sprintf(p, "(BATTERY)");
3867 break;
3868 default:
3869 p += sprintf(p,
3870 "(Timeout %dms, Period %dms)",
3871 timeout_duration[level - 1] / 1000,
3872 period_duration[level - 1] / 1000);
3873 }
3874 /*
3875 if (!(priv->power_mode & IWL_POWER_ENABLED))
3876 p += sprintf(p, " OFF\n");
3877 else
3878 p += sprintf(p, " \n");
3879 */
3880 p += sprintf(p, " \n");
3881 return (p - buf + 1);
3882 }
3883
3884 static DEVICE_ATTR(power_level, S_IWUSR | S_IRUSR, show_power_level,
3885 store_power_level);
3886
3887 static ssize_t show_channels(struct device *d,
3888 struct device_attribute *attr, char *buf)
3889 {
3890
3891 struct iwl_priv *priv = dev_get_drvdata(d);
3892 struct ieee80211_channel *channels = NULL;
3893 const struct ieee80211_supported_band *supp_band = NULL;
3894 int len = 0, i;
3895 int count = 0;
3896
3897 if (!test_bit(STATUS_GEO_CONFIGURED, &priv->status))
3898 return -EAGAIN;
3899
3900 supp_band = iwl_get_hw_mode(priv, IEEE80211_BAND_2GHZ);
3901 channels = supp_band->channels;
3902 count = supp_band->n_channels;
3903
3904 len += sprintf(&buf[len],
3905 "Displaying %d channels in 2.4GHz band "
3906 "(802.11bg):\n", count);
3907
3908 for (i = 0; i < count; i++)
3909 len += sprintf(&buf[len], "%d: %ddBm: BSS%s%s, %s.\n",
3910 ieee80211_frequency_to_channel(
3911 channels[i].center_freq),
3912 channels[i].max_power,
3913 channels[i].flags & IEEE80211_CHAN_RADAR ?
3914 " (IEEE 802.11h required)" : "",
3915 (!(channels[i].flags & IEEE80211_CHAN_NO_IBSS)
3916 || (channels[i].flags &
3917 IEEE80211_CHAN_RADAR)) ? "" :
3918 ", IBSS",
3919 channels[i].flags &
3920 IEEE80211_CHAN_PASSIVE_SCAN ?
3921 "passive only" : "active/passive");
3922
3923 supp_band = iwl_get_hw_mode(priv, IEEE80211_BAND_5GHZ);
3924 channels = supp_band->channels;
3925 count = supp_band->n_channels;
3926
3927 len += sprintf(&buf[len], "Displaying %d channels in 5.2GHz band "
3928 "(802.11a):\n", count);
3929
3930 for (i = 0; i < count; i++)
3931 len += sprintf(&buf[len], "%d: %ddBm: BSS%s%s, %s.\n",
3932 ieee80211_frequency_to_channel(
3933 channels[i].center_freq),
3934 channels[i].max_power,
3935 channels[i].flags & IEEE80211_CHAN_RADAR ?
3936 " (IEEE 802.11h required)" : "",
3937 ((channels[i].flags & IEEE80211_CHAN_NO_IBSS)
3938 || (channels[i].flags &
3939 IEEE80211_CHAN_RADAR)) ? "" :
3940 ", IBSS",
3941 channels[i].flags &
3942 IEEE80211_CHAN_PASSIVE_SCAN ?
3943 "passive only" : "active/passive");
3944
3945 return len;
3946 }
3947
3948 static DEVICE_ATTR(channels, S_IRUSR, show_channels, NULL);
3949
3950 static ssize_t show_statistics(struct device *d,
3951 struct device_attribute *attr, char *buf)
3952 {
3953 struct iwl_priv *priv = dev_get_drvdata(d);
3954 u32 size = sizeof(struct iwl_notif_statistics);
3955 u32 len = 0, ofs = 0;
3956 u8 *data = (u8 *) & priv->statistics;
3957 int rc = 0;
3958
3959 if (!iwl_is_alive(priv))
3960 return -EAGAIN;
3961
3962 mutex_lock(&priv->mutex);
3963 rc = iwl_send_statistics_request(priv, 0);
3964 mutex_unlock(&priv->mutex);
3965
3966 if (rc) {
3967 len = sprintf(buf,
3968 "Error sending statistics request: 0x%08X\n", rc);
3969 return len;
3970 }
3971
3972 while (size && (PAGE_SIZE - len)) {
3973 hex_dump_to_buffer(data + ofs, size, 16, 1, buf + len,
3974 PAGE_SIZE - len, 1);
3975 len = strlen(buf);
3976 if (PAGE_SIZE - len)
3977 buf[len++] = '\n';
3978
3979 ofs += 16;
3980 size -= min(size, 16U);
3981 }
3982
3983 return len;
3984 }
3985
3986 static DEVICE_ATTR(statistics, S_IRUGO, show_statistics, NULL);
3987
3988 static ssize_t show_status(struct device *d,
3989 struct device_attribute *attr, char *buf)
3990 {
3991 struct iwl_priv *priv = (struct iwl_priv *)d->driver_data;
3992 if (!iwl_is_alive(priv))
3993 return -EAGAIN;
3994 return sprintf(buf, "0x%08x\n", (int)priv->status);
3995 }
3996
3997 static DEVICE_ATTR(status, S_IRUGO, show_status, NULL);
3998
3999 /*****************************************************************************
4000 *
4001 * driver setup and teardown
4002 *
4003 *****************************************************************************/
4004
4005 static void iwl_setup_deferred_work(struct iwl_priv *priv)
4006 {
4007 priv->workqueue = create_workqueue(DRV_NAME);
4008
4009 init_waitqueue_head(&priv->wait_command_queue);
4010
4011 INIT_WORK(&priv->up, iwl4965_bg_up);
4012 INIT_WORK(&priv->restart, iwl4965_bg_restart);
4013 INIT_WORK(&priv->rx_replenish, iwl4965_bg_rx_replenish);
4014 INIT_WORK(&priv->rf_kill, iwl4965_bg_rf_kill);
4015 INIT_WORK(&priv->beacon_update, iwl4965_bg_beacon_update);
4016 INIT_WORK(&priv->set_monitor, iwl4965_bg_set_monitor);
4017 INIT_WORK(&priv->run_time_calib_work, iwl_bg_run_time_calib_work);
4018 INIT_DELAYED_WORK(&priv->post_associate, iwl4965_bg_post_associate);
4019 INIT_DELAYED_WORK(&priv->init_alive_start, iwl_bg_init_alive_start);
4020 INIT_DELAYED_WORK(&priv->alive_start, iwl_bg_alive_start);
4021
4022 /* FIXME : remove when resolved PENDING */
4023 INIT_WORK(&priv->scan_completed, iwl_bg_scan_completed);
4024 iwl_setup_scan_deferred_work(priv);
4025
4026 if (priv->cfg->ops->lib->setup_deferred_work)
4027 priv->cfg->ops->lib->setup_deferred_work(priv);
4028
4029 init_timer(&priv->statistics_periodic);
4030 priv->statistics_periodic.data = (unsigned long)priv;
4031 priv->statistics_periodic.function = iwl4965_bg_statistics_periodic;
4032
4033 tasklet_init(&priv->irq_tasklet, (void (*)(unsigned long))
4034 iwl4965_irq_tasklet, (unsigned long)priv);
4035 }
4036
4037 static void iwl_cancel_deferred_work(struct iwl_priv *priv)
4038 {
4039 if (priv->cfg->ops->lib->cancel_deferred_work)
4040 priv->cfg->ops->lib->cancel_deferred_work(priv);
4041
4042 cancel_delayed_work_sync(&priv->init_alive_start);
4043 cancel_delayed_work(&priv->scan_check);
4044 cancel_delayed_work(&priv->alive_start);
4045 cancel_delayed_work(&priv->post_associate);
4046 cancel_work_sync(&priv->beacon_update);
4047 del_timer_sync(&priv->statistics_periodic);
4048 }
4049
4050 static struct attribute *iwl4965_sysfs_entries[] = {
4051 &dev_attr_channels.attr,
4052 &dev_attr_flags.attr,
4053 &dev_attr_filter_flags.attr,
4054 #ifdef CONFIG_IWL4965_SPECTRUM_MEASUREMENT
4055 &dev_attr_measurement.attr,
4056 #endif
4057 &dev_attr_power_level.attr,
4058 &dev_attr_retry_rate.attr,
4059 &dev_attr_rs_window.attr,
4060 &dev_attr_statistics.attr,
4061 &dev_attr_status.attr,
4062 &dev_attr_temperature.attr,
4063 &dev_attr_tx_power.attr,
4064 #ifdef CONFIG_IWLWIFI_DEBUG
4065 &dev_attr_debug_level.attr,
4066 #endif
4067 &dev_attr_version.attr,
4068
4069 NULL
4070 };
4071
4072 static struct attribute_group iwl4965_attribute_group = {
4073 .name = NULL, /* put in device directory */
4074 .attrs = iwl4965_sysfs_entries,
4075 };
4076
4077 static struct ieee80211_ops iwl4965_hw_ops = {
4078 .tx = iwl4965_mac_tx,
4079 .start = iwl4965_mac_start,
4080 .stop = iwl4965_mac_stop,
4081 .add_interface = iwl4965_mac_add_interface,
4082 .remove_interface = iwl4965_mac_remove_interface,
4083 .config = iwl4965_mac_config,
4084 .config_interface = iwl4965_mac_config_interface,
4085 .configure_filter = iwl4965_configure_filter,
4086 .set_key = iwl4965_mac_set_key,
4087 .update_tkip_key = iwl4965_mac_update_tkip_key,
4088 .get_stats = iwl4965_mac_get_stats,
4089 .get_tx_stats = iwl4965_mac_get_tx_stats,
4090 .conf_tx = iwl4965_mac_conf_tx,
4091 .reset_tsf = iwl4965_mac_reset_tsf,
4092 .beacon_update = iwl4965_mac_beacon_update,
4093 .bss_info_changed = iwl4965_bss_info_changed,
4094 .ampdu_action = iwl4965_mac_ampdu_action,
4095 .hw_scan = iwl4965_mac_hw_scan
4096 };
4097
4098 static int iwl4965_pci_probe(struct pci_dev *pdev, const struct pci_device_id *ent)
4099 {
4100 int err = 0;
4101 struct iwl_priv *priv;
4102 struct ieee80211_hw *hw;
4103 struct iwl_cfg *cfg = (struct iwl_cfg *)(ent->driver_data);
4104 unsigned long flags;
4105 DECLARE_MAC_BUF(mac);
4106
4107 /************************
4108 * 1. Allocating HW data
4109 ************************/
4110
4111 /* Disabling hardware scan means that mac80211 will perform scans
4112 * "the hard way", rather than using device's scan. */
4113 if (cfg->mod_params->disable_hw_scan) {
4114 if (cfg->mod_params->debug & IWL_DL_INFO)
4115 dev_printk(KERN_DEBUG, &(pdev->dev),
4116 "Disabling hw_scan\n");
4117 iwl4965_hw_ops.hw_scan = NULL;
4118 }
4119
4120 hw = iwl_alloc_all(cfg, &iwl4965_hw_ops);
4121 if (!hw) {
4122 err = -ENOMEM;
4123 goto out;
4124 }
4125 priv = hw->priv;
4126 /* At this point both hw and priv are allocated. */
4127
4128 SET_IEEE80211_DEV(hw, &pdev->dev);
4129
4130 IWL_DEBUG_INFO("*** LOAD DRIVER ***\n");
4131 priv->cfg = cfg;
4132 priv->pci_dev = pdev;
4133
4134 #ifdef CONFIG_IWLWIFI_DEBUG
4135 priv->debug_level = priv->cfg->mod_params->debug;
4136 atomic_set(&priv->restrict_refcnt, 0);
4137 #endif
4138
4139 /**************************
4140 * 2. Initializing PCI bus
4141 **************************/
4142 if (pci_enable_device(pdev)) {
4143 err = -ENODEV;
4144 goto out_ieee80211_free_hw;
4145 }
4146
4147 pci_set_master(pdev);
4148
4149 err = pci_set_dma_mask(pdev, DMA_64BIT_MASK);
4150 if (!err)
4151 err = pci_set_consistent_dma_mask(pdev, DMA_64BIT_MASK);
4152 if (err) {
4153 err = pci_set_dma_mask(pdev, DMA_32BIT_MASK);
4154 if (!err)
4155 err = pci_set_consistent_dma_mask(pdev, DMA_32BIT_MASK);
4156 /* both attempts failed: */
4157 if (err) {
4158 printk(KERN_WARNING "%s: No suitable DMA available.\n",
4159 DRV_NAME);
4160 goto out_pci_disable_device;
4161 }
4162 }
4163
4164 err = pci_request_regions(pdev, DRV_NAME);
4165 if (err)
4166 goto out_pci_disable_device;
4167
4168 pci_set_drvdata(pdev, priv);
4169
4170 /* We disable the RETRY_TIMEOUT register (0x41) to keep
4171 * PCI Tx retries from interfering with C3 CPU state */
4172 pci_write_config_byte(pdev, 0x41, 0x00);
4173
4174 /***********************
4175 * 3. Read REV register
4176 ***********************/
4177 priv->hw_base = pci_iomap(pdev, 0, 0);
4178 if (!priv->hw_base) {
4179 err = -ENODEV;
4180 goto out_pci_release_regions;
4181 }
4182
4183 IWL_DEBUG_INFO("pci_resource_len = 0x%08llx\n",
4184 (unsigned long long) pci_resource_len(pdev, 0));
4185 IWL_DEBUG_INFO("pci_resource_base = %p\n", priv->hw_base);
4186
4187 iwl_hw_detect(priv);
4188 printk(KERN_INFO DRV_NAME
4189 ": Detected Intel Wireless WiFi Link %s REV=0x%X\n",
4190 priv->cfg->name, priv->hw_rev);
4191
4192 /* amp init */
4193 err = priv->cfg->ops->lib->apm_ops.init(priv);
4194 if (err < 0) {
4195 IWL_DEBUG_INFO("Failed to init APMG\n");
4196 goto out_iounmap;
4197 }
4198 /*****************
4199 * 4. Read EEPROM
4200 *****************/
4201 /* Read the EEPROM */
4202 err = iwl_eeprom_init(priv);
4203 if (err) {
4204 IWL_ERROR("Unable to init EEPROM\n");
4205 goto out_iounmap;
4206 }
4207 err = iwl_eeprom_check_version(priv);
4208 if (err)
4209 goto out_iounmap;
4210
4211 /* extract MAC Address */
4212 iwl_eeprom_get_mac(priv, priv->mac_addr);
4213 IWL_DEBUG_INFO("MAC address: %s\n", print_mac(mac, priv->mac_addr));
4214 SET_IEEE80211_PERM_ADDR(priv->hw, priv->mac_addr);
4215
4216 /************************
4217 * 5. Setup HW constants
4218 ************************/
4219 if (iwl_set_hw_params(priv)) {
4220 IWL_ERROR("failed to set hw parameters\n");
4221 goto out_free_eeprom;
4222 }
4223
4224 /*******************
4225 * 6. Setup priv
4226 *******************/
4227
4228 err = iwl_init_drv(priv);
4229 if (err)
4230 goto out_free_eeprom;
4231 /* At this point both hw and priv are initialized. */
4232
4233 /**********************************
4234 * 7. Initialize module parameters
4235 **********************************/
4236
4237 /* Disable radio (SW RF KILL) via parameter when loading driver */
4238 if (priv->cfg->mod_params->disable) {
4239 set_bit(STATUS_RF_KILL_SW, &priv->status);
4240 IWL_DEBUG_INFO("Radio disabled.\n");
4241 }
4242
4243 /********************
4244 * 8. Setup services
4245 ********************/
4246 spin_lock_irqsave(&priv->lock, flags);
4247 iwl4965_disable_interrupts(priv);
4248 spin_unlock_irqrestore(&priv->lock, flags);
4249
4250 err = sysfs_create_group(&pdev->dev.kobj, &iwl4965_attribute_group);
4251 if (err) {
4252 IWL_ERROR("failed to create sysfs device attributes\n");
4253 goto out_uninit_drv;
4254 }
4255
4256
4257 iwl_setup_deferred_work(priv);
4258 iwl_setup_rx_handlers(priv);
4259
4260 /********************
4261 * 9. Conclude
4262 ********************/
4263 pci_save_state(pdev);
4264 pci_disable_device(pdev);
4265
4266 /**********************************
4267 * 10. Setup and register mac80211
4268 **********************************/
4269
4270 err = iwl_setup_mac(priv);
4271 if (err)
4272 goto out_remove_sysfs;
4273
4274 err = iwl_dbgfs_register(priv, DRV_NAME);
4275 if (err)
4276 IWL_ERROR("failed to create debugfs files\n");
4277
4278 err = iwl_rfkill_init(priv);
4279 if (err)
4280 IWL_ERROR("Unable to initialize RFKILL system. "
4281 "Ignoring error: %d\n", err);
4282 iwl_power_initialize(priv);
4283 return 0;
4284
4285 out_remove_sysfs:
4286 sysfs_remove_group(&pdev->dev.kobj, &iwl4965_attribute_group);
4287 out_uninit_drv:
4288 iwl_uninit_drv(priv);
4289 out_free_eeprom:
4290 iwl_eeprom_free(priv);
4291 out_iounmap:
4292 pci_iounmap(pdev, priv->hw_base);
4293 out_pci_release_regions:
4294 pci_release_regions(pdev);
4295 pci_set_drvdata(pdev, NULL);
4296 out_pci_disable_device:
4297 pci_disable_device(pdev);
4298 out_ieee80211_free_hw:
4299 ieee80211_free_hw(priv->hw);
4300 out:
4301 return err;
4302 }
4303
4304 static void __devexit iwl4965_pci_remove(struct pci_dev *pdev)
4305 {
4306 struct iwl_priv *priv = pci_get_drvdata(pdev);
4307 unsigned long flags;
4308
4309 if (!priv)
4310 return;
4311
4312 IWL_DEBUG_INFO("*** UNLOAD DRIVER ***\n");
4313
4314 iwl_dbgfs_unregister(priv);
4315 sysfs_remove_group(&pdev->dev.kobj, &iwl4965_attribute_group);
4316
4317 if (priv->mac80211_registered) {
4318 ieee80211_unregister_hw(priv->hw);
4319 priv->mac80211_registered = 0;
4320 }
4321
4322 set_bit(STATUS_EXIT_PENDING, &priv->status);
4323
4324 iwl4965_down(priv);
4325
4326 /* make sure we flush any pending irq or
4327 * tasklet for the driver
4328 */
4329 spin_lock_irqsave(&priv->lock, flags);
4330 iwl4965_disable_interrupts(priv);
4331 spin_unlock_irqrestore(&priv->lock, flags);
4332
4333 iwl_synchronize_irq(priv);
4334
4335 iwl_rfkill_unregister(priv);
4336 iwl4965_dealloc_ucode_pci(priv);
4337
4338 if (priv->rxq.bd)
4339 iwl_rx_queue_free(priv, &priv->rxq);
4340 iwl_hw_txq_ctx_free(priv);
4341
4342 iwl_clear_stations_table(priv);
4343 iwl_eeprom_free(priv);
4344
4345
4346 /*netif_stop_queue(dev); */
4347 flush_workqueue(priv->workqueue);
4348
4349 /* ieee80211_unregister_hw calls iwl4965_mac_stop, which flushes
4350 * priv->workqueue... so we can't take down the workqueue
4351 * until now... */
4352 destroy_workqueue(priv->workqueue);
4353 priv->workqueue = NULL;
4354
4355 pci_iounmap(pdev, priv->hw_base);
4356 pci_release_regions(pdev);
4357 pci_disable_device(pdev);
4358 pci_set_drvdata(pdev, NULL);
4359
4360 iwl_uninit_drv(priv);
4361
4362 if (priv->ibss_beacon)
4363 dev_kfree_skb(priv->ibss_beacon);
4364
4365 ieee80211_free_hw(priv->hw);
4366 }
4367
4368 #ifdef CONFIG_PM
4369
4370 static int iwl4965_pci_suspend(struct pci_dev *pdev, pm_message_t state)
4371 {
4372 struct iwl_priv *priv = pci_get_drvdata(pdev);
4373
4374 if (priv->is_open) {
4375 set_bit(STATUS_IN_SUSPEND, &priv->status);
4376 iwl4965_mac_stop(priv->hw);
4377 priv->is_open = 1;
4378 }
4379
4380 pci_set_power_state(pdev, PCI_D3hot);
4381
4382 return 0;
4383 }
4384
4385 static int iwl4965_pci_resume(struct pci_dev *pdev)
4386 {
4387 struct iwl_priv *priv = pci_get_drvdata(pdev);
4388
4389 pci_set_power_state(pdev, PCI_D0);
4390
4391 if (priv->is_open)
4392 iwl4965_mac_start(priv->hw);
4393
4394 clear_bit(STATUS_IN_SUSPEND, &priv->status);
4395 return 0;
4396 }
4397
4398 #endif /* CONFIG_PM */
4399
4400 /*****************************************************************************
4401 *
4402 * driver and module entry point
4403 *
4404 *****************************************************************************/
4405
4406 /* Hardware specific file defines the PCI IDs table for that hardware module */
4407 static struct pci_device_id iwl_hw_card_ids[] = {
4408 {IWL_PCI_DEVICE(0x4229, PCI_ANY_ID, iwl4965_agn_cfg)},
4409 {IWL_PCI_DEVICE(0x4230, PCI_ANY_ID, iwl4965_agn_cfg)},
4410 #ifdef CONFIG_IWL5000
4411 {IWL_PCI_DEVICE(0x4235, PCI_ANY_ID, iwl5300_agn_cfg)},
4412 {IWL_PCI_DEVICE(0x4232, PCI_ANY_ID, iwl5100_agn_cfg)},
4413 {IWL_PCI_DEVICE(0x423A, PCI_ANY_ID, iwl5350_agn_cfg)},
4414 #endif /* CONFIG_IWL5000 */
4415 {0}
4416 };
4417 MODULE_DEVICE_TABLE(pci, iwl_hw_card_ids);
4418
4419 static struct pci_driver iwl_driver = {
4420 .name = DRV_NAME,
4421 .id_table = iwl_hw_card_ids,
4422 .probe = iwl4965_pci_probe,
4423 .remove = __devexit_p(iwl4965_pci_remove),
4424 #ifdef CONFIG_PM
4425 .suspend = iwl4965_pci_suspend,
4426 .resume = iwl4965_pci_resume,
4427 #endif
4428 };
4429
4430 static int __init iwl4965_init(void)
4431 {
4432
4433 int ret;
4434 printk(KERN_INFO DRV_NAME ": " DRV_DESCRIPTION ", " DRV_VERSION "\n");
4435 printk(KERN_INFO DRV_NAME ": " DRV_COPYRIGHT "\n");
4436
4437 ret = iwl4965_rate_control_register();
4438 if (ret) {
4439 IWL_ERROR("Unable to register rate control algorithm: %d\n", ret);
4440 return ret;
4441 }
4442
4443 ret = pci_register_driver(&iwl_driver);
4444 if (ret) {
4445 IWL_ERROR("Unable to initialize PCI module\n");
4446 goto error_register;
4447 }
4448
4449 return ret;
4450
4451 error_register:
4452 iwl4965_rate_control_unregister();
4453 return ret;
4454 }
4455
4456 static void __exit iwl4965_exit(void)
4457 {
4458 pci_unregister_driver(&iwl_driver);
4459 iwl4965_rate_control_unregister();
4460 }
4461
4462 module_exit(iwl4965_exit);
4463 module_init(iwl4965_init);
Linux 2.6 ibm-acpi/thinkpad-acpi driver git tree