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iwlwifi: remove useless network and duplicate checking
[linux-2.6/linux-acpi-2.6/ibm-acpi-2.6.git] / drivers / net / wireless / iwlwifi / iwl4965-base.c
blob4129e90f360ad4b650bb24e3ea47e8273b9840eb
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 && (priv->iw_mode == IEEE80211_IF_TYPE_STA)) {
348 if (iwl_rxon_add_station(priv, priv->active_rxon.bssid_addr, 1)
349 == IWL_INVALID_STATION) {
350 IWL_ERROR("Error adding AP address for transmit.\n");
351 return -EIO;
352 }
353 priv->assoc_station_added = 1;
354 if (priv->default_wep_key &&
355 iwl_send_static_wepkey_cmd(priv, 0))
356 IWL_ERROR("Could not send WEP static key.\n");
357
358 /* Apply the new configuration
359 * RXON assoc doesn't clear the station table in uCode,
360 */
361 ret = iwl_send_cmd_pdu(priv, REPLY_RXON,
362 sizeof(struct iwl_rxon_cmd), &priv->staging_rxon);
363 if (ret) {
364 IWL_ERROR("Error setting new RXON (%d)\n", ret);
365 return ret;
366 }
367 memcpy(active_rxon, &priv->staging_rxon, sizeof(*active_rxon));
368 }
369
370 return 0;
371 }
372
373 void iwl4965_update_chain_flags(struct iwl_priv *priv)
374 {
375
376 iwl_set_rxon_chain(priv);
377 iwl4965_commit_rxon(priv);
378 }
379
380 static int iwl4965_send_bt_config(struct iwl_priv *priv)
381 {
382 struct iwl4965_bt_cmd bt_cmd = {
383 .flags = 3,
384 .lead_time = 0xAA,
385 .max_kill = 1,
386 .kill_ack_mask = 0,
387 .kill_cts_mask = 0,
388 };
389
390 return iwl_send_cmd_pdu(priv, REPLY_BT_CONFIG,
391 sizeof(struct iwl4965_bt_cmd), &bt_cmd);
392 }
393
394 static void iwl_clear_free_frames(struct iwl_priv *priv)
395 {
396 struct list_head *element;
397
398 IWL_DEBUG_INFO("%d frames on pre-allocated heap on clear.\n",
399 priv->frames_count);
400
401 while (!list_empty(&priv->free_frames)) {
402 element = priv->free_frames.next;
403 list_del(element);
404 kfree(list_entry(element, struct iwl_frame, list));
405 priv->frames_count--;
406 }
407
408 if (priv->frames_count) {
409 IWL_WARNING("%d frames still in use. Did we lose one?\n",
410 priv->frames_count);
411 priv->frames_count = 0;
412 }
413 }
414
415 static struct iwl_frame *iwl_get_free_frame(struct iwl_priv *priv)
416 {
417 struct iwl_frame *frame;
418 struct list_head *element;
419 if (list_empty(&priv->free_frames)) {
420 frame = kzalloc(sizeof(*frame), GFP_KERNEL);
421 if (!frame) {
422 IWL_ERROR("Could not allocate frame!\n");
423 return NULL;
424 }
425
426 priv->frames_count++;
427 return frame;
428 }
429
430 element = priv->free_frames.next;
431 list_del(element);
432 return list_entry(element, struct iwl_frame, list);
433 }
434
435 static void iwl_free_frame(struct iwl_priv *priv, struct iwl_frame *frame)
436 {
437 memset(frame, 0, sizeof(*frame));
438 list_add(&frame->list, &priv->free_frames);
439 }
440
441 unsigned int iwl4965_fill_beacon_frame(struct iwl_priv *priv,
442 struct ieee80211_hdr *hdr,
443 const u8 *dest, int left)
444 {
445
446 if (!iwl_is_associated(priv) || !priv->ibss_beacon ||
447 ((priv->iw_mode != IEEE80211_IF_TYPE_IBSS) &&
448 (priv->iw_mode != IEEE80211_IF_TYPE_AP)))
449 return 0;
450
451 if (priv->ibss_beacon->len > left)
452 return 0;
453
454 memcpy(hdr, priv->ibss_beacon->data, priv->ibss_beacon->len);
455
456 return priv->ibss_beacon->len;
457 }
458
459 static u8 iwl4965_rate_get_lowest_plcp(struct iwl_priv *priv)
460 {
461 int i;
462 int rate_mask;
463
464 /* Set rate mask*/
465 if (priv->staging_rxon.flags & RXON_FLG_BAND_24G_MSK)
466 rate_mask = priv->active_rate_basic & 0xF;
467 else
468 rate_mask = priv->active_rate_basic & 0xFF0;
469
470 /* Find lowest valid rate */
471 for (i = IWL_RATE_1M_INDEX; i != IWL_RATE_INVALID;
472 i = iwl_rates[i].next_ieee) {
473 if (rate_mask & (1 << i))
474 return iwl_rates[i].plcp;
475 }
476
477 /* No valid rate was found. Assign the lowest one */
478 if (priv->staging_rxon.flags & RXON_FLG_BAND_24G_MSK)
479 return IWL_RATE_1M_PLCP;
480 else
481 return IWL_RATE_6M_PLCP;
482 }
483
484 static int iwl4965_send_beacon_cmd(struct iwl_priv *priv)
485 {
486 struct iwl_frame *frame;
487 unsigned int frame_size;
488 int rc;
489 u8 rate;
490
491 frame = iwl_get_free_frame(priv);
492
493 if (!frame) {
494 IWL_ERROR("Could not obtain free frame buffer for beacon "
495 "command.\n");
496 return -ENOMEM;
497 }
498
499 rate = iwl4965_rate_get_lowest_plcp(priv);
500
501 frame_size = iwl4965_hw_get_beacon_cmd(priv, frame, rate);
502
503 rc = iwl_send_cmd_pdu(priv, REPLY_TX_BEACON, frame_size,
504 &frame->u.cmd[0]);
505
506 iwl_free_frame(priv, frame);
507
508 return rc;
509 }
510
511 /******************************************************************************
512 *
513 * Misc. internal state and helper functions
514 *
515 ******************************************************************************/
516
517 static void iwl4965_ht_conf(struct iwl_priv *priv,
518 struct ieee80211_bss_conf *bss_conf)
519 {
520 struct ieee80211_ht_info *ht_conf = bss_conf->ht_conf;
521 struct ieee80211_ht_bss_info *ht_bss_conf = bss_conf->ht_bss_conf;
522 struct iwl_ht_info *iwl_conf = &priv->current_ht_config;
523
524 IWL_DEBUG_MAC80211("enter: \n");
525
526 iwl_conf->is_ht = bss_conf->assoc_ht;
527
528 if (!iwl_conf->is_ht)
529 return;
530
531 priv->ps_mode = (u8)((ht_conf->cap & IEEE80211_HT_CAP_MIMO_PS) >> 2);
532
533 if (ht_conf->cap & IEEE80211_HT_CAP_SGI_20)
534 iwl_conf->sgf |= HT_SHORT_GI_20MHZ;
535 if (ht_conf->cap & IEEE80211_HT_CAP_SGI_40)
536 iwl_conf->sgf |= HT_SHORT_GI_40MHZ;
537
538 iwl_conf->is_green_field = !!(ht_conf->cap & IEEE80211_HT_CAP_GRN_FLD);
539 iwl_conf->max_amsdu_size =
540 !!(ht_conf->cap & IEEE80211_HT_CAP_MAX_AMSDU);
541
542 iwl_conf->supported_chan_width =
543 !!(ht_conf->cap & IEEE80211_HT_CAP_SUP_WIDTH);
544 iwl_conf->extension_chan_offset =
545 ht_bss_conf->bss_cap & IEEE80211_HT_IE_CHA_SEC_OFFSET;
546 /* If no above or below channel supplied disable FAT channel */
547 if (iwl_conf->extension_chan_offset != IEEE80211_HT_IE_CHA_SEC_ABOVE &&
548 iwl_conf->extension_chan_offset != IEEE80211_HT_IE_CHA_SEC_BELOW) {
549 iwl_conf->extension_chan_offset = IEEE80211_HT_IE_CHA_SEC_NONE;
550 iwl_conf->supported_chan_width = 0;
551 }
552
553 iwl_conf->tx_mimo_ps_mode =
554 (u8)((ht_conf->cap & IEEE80211_HT_CAP_MIMO_PS) >> 2);
555 memcpy(iwl_conf->supp_mcs_set, ht_conf->supp_mcs_set, 16);
556
557 iwl_conf->control_channel = ht_bss_conf->primary_channel;
558 iwl_conf->tx_chan_width =
559 !!(ht_bss_conf->bss_cap & IEEE80211_HT_IE_CHA_WIDTH);
560 iwl_conf->ht_protection =
561 ht_bss_conf->bss_op_mode & IEEE80211_HT_IE_HT_PROTECTION;
562 iwl_conf->non_GF_STA_present =
563 !!(ht_bss_conf->bss_op_mode & IEEE80211_HT_IE_NON_GF_STA_PRSNT);
564
565 IWL_DEBUG_MAC80211("control channel %d\n", iwl_conf->control_channel);
566 IWL_DEBUG_MAC80211("leave\n");
567 }
568
569 /*
570 * QoS support
571 */
572 static int iwl4965_send_qos_params_command(struct iwl_priv *priv,
573 struct iwl4965_qosparam_cmd *qos)
574 {
575
576 return iwl_send_cmd_pdu(priv, REPLY_QOS_PARAM,
577 sizeof(struct iwl4965_qosparam_cmd), qos);
578 }
579
580 static void iwl4965_activate_qos(struct iwl_priv *priv, u8 force)
581 {
582 unsigned long flags;
583
584 if (test_bit(STATUS_EXIT_PENDING, &priv->status))
585 return;
586
587 if (!priv->qos_data.qos_enable)
588 return;
589
590 spin_lock_irqsave(&priv->lock, flags);
591 priv->qos_data.def_qos_parm.qos_flags = 0;
592
593 if (priv->qos_data.qos_cap.q_AP.queue_request &&
594 !priv->qos_data.qos_cap.q_AP.txop_request)
595 priv->qos_data.def_qos_parm.qos_flags |=
596 QOS_PARAM_FLG_TXOP_TYPE_MSK;
597 if (priv->qos_data.qos_active)
598 priv->qos_data.def_qos_parm.qos_flags |=
599 QOS_PARAM_FLG_UPDATE_EDCA_MSK;
600
601 if (priv->current_ht_config.is_ht)
602 priv->qos_data.def_qos_parm.qos_flags |= QOS_PARAM_FLG_TGN_MSK;
603
604 spin_unlock_irqrestore(&priv->lock, flags);
605
606 if (force || iwl_is_associated(priv)) {
607 IWL_DEBUG_QOS("send QoS cmd with Qos active=%d FLAGS=0x%X\n",
608 priv->qos_data.qos_active,
609 priv->qos_data.def_qos_parm.qos_flags);
610
611 iwl4965_send_qos_params_command(priv,
612 &(priv->qos_data.def_qos_parm));
613 }
614 }
615
616 #define MAX_UCODE_BEACON_INTERVAL 4096
617 #define INTEL_CONN_LISTEN_INTERVAL __constant_cpu_to_le16(0xA)
618
619 static __le16 iwl4965_adjust_beacon_interval(u16 beacon_val)
620 {
621 u16 new_val = 0;
622 u16 beacon_factor = 0;
623
624 beacon_factor =
625 (beacon_val + MAX_UCODE_BEACON_INTERVAL)
626 / MAX_UCODE_BEACON_INTERVAL;
627 new_val = beacon_val / beacon_factor;
628
629 return cpu_to_le16(new_val);
630 }
631
632 static void iwl4965_setup_rxon_timing(struct iwl_priv *priv)
633 {
634 u64 interval_tm_unit;
635 u64 tsf, result;
636 unsigned long flags;
637 struct ieee80211_conf *conf = NULL;
638 u16 beacon_int = 0;
639
640 conf = ieee80211_get_hw_conf(priv->hw);
641
642 spin_lock_irqsave(&priv->lock, flags);
643 priv->rxon_timing.timestamp.dw[1] = cpu_to_le32(priv->timestamp >> 32);
644 priv->rxon_timing.timestamp.dw[0] =
645 cpu_to_le32(priv->timestamp & 0xFFFFFFFF);
646
647 priv->rxon_timing.listen_interval = INTEL_CONN_LISTEN_INTERVAL;
648
649 tsf = priv->timestamp;
650
651 beacon_int = priv->beacon_int;
652 spin_unlock_irqrestore(&priv->lock, flags);
653
654 if (priv->iw_mode == IEEE80211_IF_TYPE_STA) {
655 if (beacon_int == 0) {
656 priv->rxon_timing.beacon_interval = cpu_to_le16(100);
657 priv->rxon_timing.beacon_init_val = cpu_to_le32(102400);
658 } else {
659 priv->rxon_timing.beacon_interval =
660 cpu_to_le16(beacon_int);
661 priv->rxon_timing.beacon_interval =
662 iwl4965_adjust_beacon_interval(
663 le16_to_cpu(priv->rxon_timing.beacon_interval));
664 }
665
666 priv->rxon_timing.atim_window = 0;
667 } else {
668 priv->rxon_timing.beacon_interval =
669 iwl4965_adjust_beacon_interval(conf->beacon_int);
670 /* TODO: we need to get atim_window from upper stack
671 * for now we set to 0 */
672 priv->rxon_timing.atim_window = 0;
673 }
674
675 interval_tm_unit =
676 (le16_to_cpu(priv->rxon_timing.beacon_interval) * 1024);
677 result = do_div(tsf, interval_tm_unit);
678 priv->rxon_timing.beacon_init_val =
679 cpu_to_le32((u32) ((u64) interval_tm_unit - result));
680
681 IWL_DEBUG_ASSOC
682 ("beacon interval %d beacon timer %d beacon tim %d\n",
683 le16_to_cpu(priv->rxon_timing.beacon_interval),
684 le32_to_cpu(priv->rxon_timing.beacon_init_val),
685 le16_to_cpu(priv->rxon_timing.atim_window));
686 }
687
688 static void iwl_set_flags_for_band(struct iwl_priv *priv,
689 enum ieee80211_band band)
690 {
691 if (band == IEEE80211_BAND_5GHZ) {
692 priv->staging_rxon.flags &=
693 ~(RXON_FLG_BAND_24G_MSK | RXON_FLG_AUTO_DETECT_MSK
694 | RXON_FLG_CCK_MSK);
695 priv->staging_rxon.flags |= RXON_FLG_SHORT_SLOT_MSK;
696 } else {
697 /* Copied from iwl4965_post_associate() */
698 if (priv->assoc_capability & WLAN_CAPABILITY_SHORT_SLOT_TIME)
699 priv->staging_rxon.flags |= RXON_FLG_SHORT_SLOT_MSK;
700 else
701 priv->staging_rxon.flags &= ~RXON_FLG_SHORT_SLOT_MSK;
702
703 if (priv->iw_mode == IEEE80211_IF_TYPE_IBSS)
704 priv->staging_rxon.flags &= ~RXON_FLG_SHORT_SLOT_MSK;
705
706 priv->staging_rxon.flags |= RXON_FLG_BAND_24G_MSK;
707 priv->staging_rxon.flags |= RXON_FLG_AUTO_DETECT_MSK;
708 priv->staging_rxon.flags &= ~RXON_FLG_CCK_MSK;
709 }
710 }
711
712 /*
713 * initialize rxon structure with default values from eeprom
714 */
715 static void iwl4965_connection_init_rx_config(struct iwl_priv *priv)
716 {
717 const struct iwl_channel_info *ch_info;
718
719 memset(&priv->staging_rxon, 0, sizeof(priv->staging_rxon));
720
721 switch (priv->iw_mode) {
722 case IEEE80211_IF_TYPE_AP:
723 priv->staging_rxon.dev_type = RXON_DEV_TYPE_AP;
724 break;
725
726 case IEEE80211_IF_TYPE_STA:
727 priv->staging_rxon.dev_type = RXON_DEV_TYPE_ESS;
728 priv->staging_rxon.filter_flags = RXON_FILTER_ACCEPT_GRP_MSK;
729 break;
730
731 case IEEE80211_IF_TYPE_IBSS:
732 priv->staging_rxon.dev_type = RXON_DEV_TYPE_IBSS;
733 priv->staging_rxon.flags = RXON_FLG_SHORT_PREAMBLE_MSK;
734 priv->staging_rxon.filter_flags = RXON_FILTER_BCON_AWARE_MSK |
735 RXON_FILTER_ACCEPT_GRP_MSK;
736 break;
737
738 case IEEE80211_IF_TYPE_MNTR:
739 priv->staging_rxon.dev_type = RXON_DEV_TYPE_SNIFFER;
740 priv->staging_rxon.filter_flags = RXON_FILTER_PROMISC_MSK |
741 RXON_FILTER_CTL2HOST_MSK | RXON_FILTER_ACCEPT_GRP_MSK;
742 break;
743 default:
744 IWL_ERROR("Unsupported interface type %d\n", priv->iw_mode);
745 break;
746 }
747
748 #if 0
749 /* TODO: Figure out when short_preamble would be set and cache from
750 * that */
751 if (!hw_to_local(priv->hw)->short_preamble)
752 priv->staging_rxon.flags &= ~RXON_FLG_SHORT_PREAMBLE_MSK;
753 else
754 priv->staging_rxon.flags |= RXON_FLG_SHORT_PREAMBLE_MSK;
755 #endif
756
757 ch_info = iwl_get_channel_info(priv, priv->band,
758 le16_to_cpu(priv->staging_rxon.channel));
759
760 if (!ch_info)
761 ch_info = &priv->channel_info[0];
762
763 /*
764 * in some case A channels are all non IBSS
765 * in this case force B/G channel
766 */
767 if ((priv->iw_mode == IEEE80211_IF_TYPE_IBSS) &&
768 !(is_channel_ibss(ch_info)))
769 ch_info = &priv->channel_info[0];
770
771 priv->staging_rxon.channel = cpu_to_le16(ch_info->channel);
772 priv->band = ch_info->band;
773
774 iwl_set_flags_for_band(priv, priv->band);
775
776 priv->staging_rxon.ofdm_basic_rates =
777 (IWL_OFDM_RATES_MASK >> IWL_FIRST_OFDM_RATE) & 0xFF;
778 priv->staging_rxon.cck_basic_rates =
779 (IWL_CCK_RATES_MASK >> IWL_FIRST_CCK_RATE) & 0xF;
780
781 priv->staging_rxon.flags &= ~(RXON_FLG_CHANNEL_MODE_MIXED_MSK |
782 RXON_FLG_CHANNEL_MODE_PURE_40_MSK);
783 memcpy(priv->staging_rxon.node_addr, priv->mac_addr, ETH_ALEN);
784 memcpy(priv->staging_rxon.wlap_bssid_addr, priv->mac_addr, ETH_ALEN);
785 priv->staging_rxon.ofdm_ht_single_stream_basic_rates = 0xff;
786 priv->staging_rxon.ofdm_ht_dual_stream_basic_rates = 0xff;
787 iwl_set_rxon_chain(priv);
788 }
789
790 static int iwl4965_set_mode(struct iwl_priv *priv, int mode)
791 {
792 priv->iw_mode = mode;
793
794 /* init channel/phymode to values given at driver init */
795 iwl_set_rxon_channel(priv, IEEE80211_BAND_2GHZ, 6);
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 iwl4965_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 /* Set up hardware specific Rx handlers */
1283 priv->cfg->ops->lib->rx_handler_setup(priv);
1284 }
1285
1286 /*
1287 * this should be called while priv->lock is locked
1288 */
1289 static void __iwl_rx_replenish(struct iwl_priv *priv)
1290 {
1291 iwl_rx_allocate(priv);
1292 iwl_rx_queue_restock(priv);
1293 }
1294
1295
1296 /**
1297 * iwl_rx_handle - Main entry function for receiving responses from uCode
1298 *
1299 * Uses the priv->rx_handlers callback function array to invoke
1300 * the appropriate handlers, including command responses,
1301 * frame-received notifications, and other notifications.
1302 */
1303 void iwl_rx_handle(struct iwl_priv *priv)
1304 {
1305 struct iwl_rx_mem_buffer *rxb;
1306 struct iwl_rx_packet *pkt;
1307 struct iwl_rx_queue *rxq = &priv->rxq;
1308 u32 r, i;
1309 int reclaim;
1310 unsigned long flags;
1311 u8 fill_rx = 0;
1312 u32 count = 8;
1313
1314 /* uCode's read index (stored in shared DRAM) indicates the last Rx
1315 * buffer that the driver may process (last buffer filled by ucode). */
1316 r = priv->cfg->ops->lib->shared_mem_rx_idx(priv);
1317 i = rxq->read;
1318
1319 /* Rx interrupt, but nothing sent from uCode */
1320 if (i == r)
1321 IWL_DEBUG(IWL_DL_RX, "r = %d, i = %d\n", r, i);
1322
1323 if (iwl_rx_queue_space(rxq) > (RX_QUEUE_SIZE / 2))
1324 fill_rx = 1;
1325
1326 while (i != r) {
1327 rxb = rxq->queue[i];
1328
1329 /* If an RXB doesn't have a Rx queue slot associated with it,
1330 * then a bug has been introduced in the queue refilling
1331 * routines -- catch it here */
1332 BUG_ON(rxb == NULL);
1333
1334 rxq->queue[i] = NULL;
1335
1336 pci_dma_sync_single_for_cpu(priv->pci_dev, rxb->dma_addr,
1337 priv->hw_params.rx_buf_size,
1338 PCI_DMA_FROMDEVICE);
1339 pkt = (struct iwl_rx_packet *)rxb->skb->data;
1340
1341 /* Reclaim a command buffer only if this packet is a response
1342 * to a (driver-originated) command.
1343 * If the packet (e.g. Rx frame) originated from uCode,
1344 * there is no command buffer to reclaim.
1345 * Ucode should set SEQ_RX_FRAME bit if ucode-originated,
1346 * but apparently a few don't get set; catch them here. */
1347 reclaim = !(pkt->hdr.sequence & SEQ_RX_FRAME) &&
1348 (pkt->hdr.cmd != REPLY_RX_PHY_CMD) &&
1349 (pkt->hdr.cmd != REPLY_RX) &&
1350 (pkt->hdr.cmd != REPLY_COMPRESSED_BA) &&
1351 (pkt->hdr.cmd != STATISTICS_NOTIFICATION) &&
1352 (pkt->hdr.cmd != REPLY_TX);
1353
1354 /* Based on type of command response or notification,
1355 * handle those that need handling via function in
1356 * rx_handlers table. See iwl4965_setup_rx_handlers() */
1357 if (priv->rx_handlers[pkt->hdr.cmd]) {
1358 IWL_DEBUG(IWL_DL_RX, "r = %d, i = %d, %s, 0x%02x\n", r,
1359 i, get_cmd_string(pkt->hdr.cmd), pkt->hdr.cmd);
1360 priv->rx_handlers[pkt->hdr.cmd] (priv, rxb);
1361 } else {
1362 /* No handling needed */
1363 IWL_DEBUG(IWL_DL_RX,
1364 "r %d i %d No handler needed for %s, 0x%02x\n",
1365 r, i, get_cmd_string(pkt->hdr.cmd),
1366 pkt->hdr.cmd);
1367 }
1368
1369 if (reclaim) {
1370 /* Invoke any callbacks, transfer the skb to caller, and
1371 * fire off the (possibly) blocking iwl_send_cmd()
1372 * as we reclaim the driver command queue */
1373 if (rxb && rxb->skb)
1374 iwl_tx_cmd_complete(priv, rxb);
1375 else
1376 IWL_WARNING("Claim null rxb?\n");
1377 }
1378
1379 /* For now we just don't re-use anything. We can tweak this
1380 * later to try and re-use notification packets and SKBs that
1381 * fail to Rx correctly */
1382 if (rxb->skb != NULL) {
1383 priv->alloc_rxb_skb--;
1384 dev_kfree_skb_any(rxb->skb);
1385 rxb->skb = NULL;
1386 }
1387
1388 pci_unmap_single(priv->pci_dev, rxb->dma_addr,
1389 priv->hw_params.rx_buf_size,
1390 PCI_DMA_FROMDEVICE);
1391 spin_lock_irqsave(&rxq->lock, flags);
1392 list_add_tail(&rxb->list, &priv->rxq.rx_used);
1393 spin_unlock_irqrestore(&rxq->lock, flags);
1394 i = (i + 1) & RX_QUEUE_MASK;
1395 /* If there are a lot of unused frames,
1396 * restock the Rx queue so ucode wont assert. */
1397 if (fill_rx) {
1398 count++;
1399 if (count >= 8) {
1400 priv->rxq.read = i;
1401 __iwl_rx_replenish(priv);
1402 count = 0;
1403 }
1404 }
1405 }
1406
1407 /* Backtrack one entry */
1408 priv->rxq.read = i;
1409 iwl_rx_queue_restock(priv);
1410 }
1411
1412 #ifdef CONFIG_IWLWIFI_DEBUG
1413 static void iwl4965_print_rx_config_cmd(struct iwl_priv *priv)
1414 {
1415 struct iwl_rxon_cmd *rxon = &priv->staging_rxon;
1416 DECLARE_MAC_BUF(mac);
1417
1418 IWL_DEBUG_RADIO("RX CONFIG:\n");
1419 iwl_print_hex_dump(priv, IWL_DL_RADIO, (u8 *) rxon, sizeof(*rxon));
1420 IWL_DEBUG_RADIO("u16 channel: 0x%x\n", le16_to_cpu(rxon->channel));
1421 IWL_DEBUG_RADIO("u32 flags: 0x%08X\n", le32_to_cpu(rxon->flags));
1422 IWL_DEBUG_RADIO("u32 filter_flags: 0x%08x\n",
1423 le32_to_cpu(rxon->filter_flags));
1424 IWL_DEBUG_RADIO("u8 dev_type: 0x%x\n", rxon->dev_type);
1425 IWL_DEBUG_RADIO("u8 ofdm_basic_rates: 0x%02x\n",
1426 rxon->ofdm_basic_rates);
1427 IWL_DEBUG_RADIO("u8 cck_basic_rates: 0x%02x\n", rxon->cck_basic_rates);
1428 IWL_DEBUG_RADIO("u8[6] node_addr: %s\n",
1429 print_mac(mac, rxon->node_addr));
1430 IWL_DEBUG_RADIO("u8[6] bssid_addr: %s\n",
1431 print_mac(mac, rxon->bssid_addr));
1432 IWL_DEBUG_RADIO("u16 assoc_id: 0x%x\n", le16_to_cpu(rxon->assoc_id));
1433 }
1434 #endif
1435
1436 static void iwl4965_enable_interrupts(struct iwl_priv *priv)
1437 {
1438 IWL_DEBUG_ISR("Enabling interrupts\n");
1439 set_bit(STATUS_INT_ENABLED, &priv->status);
1440 iwl_write32(priv, CSR_INT_MASK, CSR_INI_SET_MASK);
1441 }
1442
1443 /* call this function to flush any scheduled tasklet */
1444 static inline void iwl_synchronize_irq(struct iwl_priv *priv)
1445 {
1446 /* wait to make sure we flush pedding tasklet*/
1447 synchronize_irq(priv->pci_dev->irq);
1448 tasklet_kill(&priv->irq_tasklet);
1449 }
1450
1451 static inline void iwl4965_disable_interrupts(struct iwl_priv *priv)
1452 {
1453 clear_bit(STATUS_INT_ENABLED, &priv->status);
1454
1455 /* disable interrupts from uCode/NIC to host */
1456 iwl_write32(priv, CSR_INT_MASK, 0x00000000);
1457
1458 /* acknowledge/clear/reset any interrupts still pending
1459 * from uCode or flow handler (Rx/Tx DMA) */
1460 iwl_write32(priv, CSR_INT, 0xffffffff);
1461 iwl_write32(priv, CSR_FH_INT_STATUS, 0xffffffff);
1462 IWL_DEBUG_ISR("Disabled interrupts\n");
1463 }
1464
1465
1466 /**
1467 * iwl4965_irq_handle_error - called for HW or SW error interrupt from card
1468 */
1469 static void iwl4965_irq_handle_error(struct iwl_priv *priv)
1470 {
1471 /* Set the FW error flag -- cleared on iwl4965_down */
1472 set_bit(STATUS_FW_ERROR, &priv->status);
1473
1474 /* Cancel currently queued command. */
1475 clear_bit(STATUS_HCMD_ACTIVE, &priv->status);
1476
1477 #ifdef CONFIG_IWLWIFI_DEBUG
1478 if (priv->debug_level & IWL_DL_FW_ERRORS) {
1479 iwl_dump_nic_error_log(priv);
1480 iwl_dump_nic_event_log(priv);
1481 iwl4965_print_rx_config_cmd(priv);
1482 }
1483 #endif
1484
1485 wake_up_interruptible(&priv->wait_command_queue);
1486
1487 /* Keep the restart process from trying to send host
1488 * commands by clearing the INIT status bit */
1489 clear_bit(STATUS_READY, &priv->status);
1490
1491 if (!test_bit(STATUS_EXIT_PENDING, &priv->status)) {
1492 IWL_DEBUG(IWL_DL_FW_ERRORS,
1493 "Restarting adapter due to uCode error.\n");
1494
1495 if (iwl_is_associated(priv)) {
1496 memcpy(&priv->recovery_rxon, &priv->active_rxon,
1497 sizeof(priv->recovery_rxon));
1498 priv->error_recovering = 1;
1499 }
1500 if (priv->cfg->mod_params->restart_fw)
1501 queue_work(priv->workqueue, &priv->restart);
1502 }
1503 }
1504
1505 static void iwl4965_error_recovery(struct iwl_priv *priv)
1506 {
1507 unsigned long flags;
1508
1509 memcpy(&priv->staging_rxon, &priv->recovery_rxon,
1510 sizeof(priv->staging_rxon));
1511 priv->staging_rxon.filter_flags &= ~RXON_FILTER_ASSOC_MSK;
1512 iwl4965_commit_rxon(priv);
1513
1514 iwl_rxon_add_station(priv, priv->bssid, 1);
1515
1516 spin_lock_irqsave(&priv->lock, flags);
1517 priv->assoc_id = le16_to_cpu(priv->staging_rxon.assoc_id);
1518 priv->error_recovering = 0;
1519 spin_unlock_irqrestore(&priv->lock, flags);
1520 }
1521
1522 static void iwl4965_irq_tasklet(struct iwl_priv *priv)
1523 {
1524 u32 inta, handled = 0;
1525 u32 inta_fh;
1526 unsigned long flags;
1527 #ifdef CONFIG_IWLWIFI_DEBUG
1528 u32 inta_mask;
1529 #endif
1530
1531 spin_lock_irqsave(&priv->lock, flags);
1532
1533 /* Ack/clear/reset pending uCode interrupts.
1534 * Note: Some bits in CSR_INT are "OR" of bits in CSR_FH_INT_STATUS,
1535 * and will clear only when CSR_FH_INT_STATUS gets cleared. */
1536 inta = iwl_read32(priv, CSR_INT);
1537 iwl_write32(priv, CSR_INT, inta);
1538
1539 /* Ack/clear/reset pending flow-handler (DMA) interrupts.
1540 * Any new interrupts that happen after this, either while we're
1541 * in this tasklet, or later, will show up in next ISR/tasklet. */
1542 inta_fh = iwl_read32(priv, CSR_FH_INT_STATUS);
1543 iwl_write32(priv, CSR_FH_INT_STATUS, inta_fh);
1544
1545 #ifdef CONFIG_IWLWIFI_DEBUG
1546 if (priv->debug_level & IWL_DL_ISR) {
1547 /* just for debug */
1548 inta_mask = iwl_read32(priv, CSR_INT_MASK);
1549 IWL_DEBUG_ISR("inta 0x%08x, enabled 0x%08x, fh 0x%08x\n",
1550 inta, inta_mask, inta_fh);
1551 }
1552 #endif
1553
1554 /* Since CSR_INT and CSR_FH_INT_STATUS reads and clears are not
1555 * atomic, make sure that inta covers all the interrupts that
1556 * we've discovered, even if FH interrupt came in just after
1557 * reading CSR_INT. */
1558 if (inta_fh & CSR49_FH_INT_RX_MASK)
1559 inta |= CSR_INT_BIT_FH_RX;
1560 if (inta_fh & CSR49_FH_INT_TX_MASK)
1561 inta |= CSR_INT_BIT_FH_TX;
1562
1563 /* Now service all interrupt bits discovered above. */
1564 if (inta & CSR_INT_BIT_HW_ERR) {
1565 IWL_ERROR("Microcode HW error detected. Restarting.\n");
1566
1567 /* Tell the device to stop sending interrupts */
1568 iwl4965_disable_interrupts(priv);
1569
1570 iwl4965_irq_handle_error(priv);
1571
1572 handled |= CSR_INT_BIT_HW_ERR;
1573
1574 spin_unlock_irqrestore(&priv->lock, flags);
1575
1576 return;
1577 }
1578
1579 #ifdef CONFIG_IWLWIFI_DEBUG
1580 if (priv->debug_level & (IWL_DL_ISR)) {
1581 /* NIC fires this, but we don't use it, redundant with WAKEUP */
1582 if (inta & CSR_INT_BIT_SCD)
1583 IWL_DEBUG_ISR("Scheduler finished to transmit "
1584 "the frame/frames.\n");
1585
1586 /* Alive notification via Rx interrupt will do the real work */
1587 if (inta & CSR_INT_BIT_ALIVE)
1588 IWL_DEBUG_ISR("Alive interrupt\n");
1589 }
1590 #endif
1591 /* Safely ignore these bits for debug checks below */
1592 inta &= ~(CSR_INT_BIT_SCD | CSR_INT_BIT_ALIVE);
1593
1594 /* HW RF KILL switch toggled */
1595 if (inta & CSR_INT_BIT_RF_KILL) {
1596 int hw_rf_kill = 0;
1597 if (!(iwl_read32(priv, CSR_GP_CNTRL) &
1598 CSR_GP_CNTRL_REG_FLAG_HW_RF_KILL_SW))
1599 hw_rf_kill = 1;
1600
1601 IWL_DEBUG(IWL_DL_RF_KILL, "RF_KILL bit toggled to %s.\n",
1602 hw_rf_kill ? "disable radio":"enable radio");
1603
1604 /* Queue restart only if RF_KILL switch was set to "kill"
1605 * when we loaded driver, and is now set to "enable".
1606 * After we're Alive, RF_KILL gets handled by
1607 * iwl4965_rx_card_state_notif() */
1608 if (!hw_rf_kill && !test_bit(STATUS_ALIVE, &priv->status)) {
1609 clear_bit(STATUS_RF_KILL_HW, &priv->status);
1610 queue_work(priv->workqueue, &priv->restart);
1611 }
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 goto exit;
2103 }
2104
2105 /* ...otherwise clear out all the status bits but the RF Kill and
2106 * SUSPEND bits and continue taking the NIC down. */
2107 priv->status &= test_bit(STATUS_RF_KILL_HW, &priv->status) <<
2108 STATUS_RF_KILL_HW |
2109 test_bit(STATUS_RF_KILL_SW, &priv->status) <<
2110 STATUS_RF_KILL_SW |
2111 test_bit(STATUS_GEO_CONFIGURED, &priv->status) <<
2112 STATUS_GEO_CONFIGURED |
2113 test_bit(STATUS_IN_SUSPEND, &priv->status) <<
2114 STATUS_IN_SUSPEND |
2115 test_bit(STATUS_FW_ERROR, &priv->status) <<
2116 STATUS_FW_ERROR;
2117
2118 spin_lock_irqsave(&priv->lock, flags);
2119 iwl_clear_bit(priv, CSR_GP_CNTRL,
2120 CSR_GP_CNTRL_REG_FLAG_MAC_ACCESS_REQ);
2121 spin_unlock_irqrestore(&priv->lock, flags);
2122
2123 iwl_txq_ctx_stop(priv);
2124 iwl_rxq_stop(priv);
2125
2126 spin_lock_irqsave(&priv->lock, flags);
2127 if (!iwl_grab_nic_access(priv)) {
2128 iwl_write_prph(priv, APMG_CLK_DIS_REG,
2129 APMG_CLK_VAL_DMA_CLK_RQT);
2130 iwl_release_nic_access(priv);
2131 }
2132 spin_unlock_irqrestore(&priv->lock, flags);
2133
2134 udelay(5);
2135
2136 /* FIXME: apm_ops.suspend(priv) */
2137 priv->cfg->ops->lib->apm_ops.reset(priv);
2138 priv->cfg->ops->lib->free_shared_mem(priv);
2139
2140 exit:
2141 memset(&priv->card_alive, 0, sizeof(struct iwl_alive_resp));
2142
2143 if (priv->ibss_beacon)
2144 dev_kfree_skb(priv->ibss_beacon);
2145 priv->ibss_beacon = NULL;
2146
2147 /* clear out any free frames */
2148 iwl_clear_free_frames(priv);
2149 }
2150
2151 static void iwl4965_down(struct iwl_priv *priv)
2152 {
2153 mutex_lock(&priv->mutex);
2154 __iwl4965_down(priv);
2155 mutex_unlock(&priv->mutex);
2156
2157 iwl_cancel_deferred_work(priv);
2158 }
2159
2160 #define MAX_HW_RESTARTS 5
2161
2162 static int __iwl4965_up(struct iwl_priv *priv)
2163 {
2164 int i;
2165 int ret;
2166
2167 if (test_bit(STATUS_EXIT_PENDING, &priv->status)) {
2168 IWL_WARNING("Exit pending; will not bring the NIC up\n");
2169 return -EIO;
2170 }
2171
2172 if (!priv->ucode_data_backup.v_addr || !priv->ucode_data.v_addr) {
2173 IWL_ERROR("ucode not available for device bringup\n");
2174 return -EIO;
2175 }
2176
2177 /* If platform's RF_KILL switch is NOT set to KILL */
2178 if (iwl_read32(priv, CSR_GP_CNTRL) &
2179 CSR_GP_CNTRL_REG_FLAG_HW_RF_KILL_SW)
2180 clear_bit(STATUS_RF_KILL_HW, &priv->status);
2181 else {
2182 set_bit(STATUS_RF_KILL_HW, &priv->status);
2183 if (!test_bit(STATUS_IN_SUSPEND, &priv->status)) {
2184 iwl_rfkill_set_hw_state(priv);
2185 IWL_WARNING("Radio disabled by HW RF Kill switch\n");
2186 return -ENODEV;
2187 }
2188 }
2189
2190 iwl_rfkill_set_hw_state(priv);
2191 iwl_write32(priv, CSR_INT, 0xFFFFFFFF);
2192
2193 ret = priv->cfg->ops->lib->alloc_shared_mem(priv);
2194 if (ret) {
2195 IWL_ERROR("Unable to allocate shared memory\n");
2196 return ret;
2197 }
2198
2199 ret = iwl_hw_nic_init(priv);
2200 if (ret) {
2201 IWL_ERROR("Unable to init nic\n");
2202 return ret;
2203 }
2204
2205 /* make sure rfkill handshake bits are cleared */
2206 iwl_write32(priv, CSR_UCODE_DRV_GP1_CLR, CSR_UCODE_SW_BIT_RFKILL);
2207 iwl_write32(priv, CSR_UCODE_DRV_GP1_CLR,
2208 CSR_UCODE_DRV_GP1_BIT_CMD_BLOCKED);
2209
2210 /* clear (again), then enable host interrupts */
2211 iwl_write32(priv, CSR_INT, 0xFFFFFFFF);
2212 iwl4965_enable_interrupts(priv);
2213
2214 /* really make sure rfkill handshake bits are cleared */
2215 iwl_write32(priv, CSR_UCODE_DRV_GP1_CLR, CSR_UCODE_SW_BIT_RFKILL);
2216 iwl_write32(priv, CSR_UCODE_DRV_GP1_CLR, CSR_UCODE_SW_BIT_RFKILL);
2217
2218 /* Copy original ucode data image from disk into backup cache.
2219 * This will be used to initialize the on-board processor's
2220 * data SRAM for a clean start when the runtime program first loads. */
2221 memcpy(priv->ucode_data_backup.v_addr, priv->ucode_data.v_addr,
2222 priv->ucode_data.len);
2223
2224 /* We return success when we resume from suspend and rf_kill is on. */
2225 if (test_bit(STATUS_RF_KILL_HW, &priv->status) ||
2226 test_bit(STATUS_RF_KILL_SW, &priv->status))
2227 return 0;
2228
2229 for (i = 0; i < MAX_HW_RESTARTS; i++) {
2230
2231 iwl_clear_stations_table(priv);
2232
2233 /* load bootstrap state machine,
2234 * load bootstrap program into processor's memory,
2235 * prepare to load the "initialize" uCode */
2236 ret = priv->cfg->ops->lib->load_ucode(priv);
2237
2238 if (ret) {
2239 IWL_ERROR("Unable to set up bootstrap uCode: %d\n", ret);
2240 continue;
2241 }
2242
2243 /* Clear out the uCode error bit if it is set */
2244 clear_bit(STATUS_FW_ERROR, &priv->status);
2245
2246 /* start card; "initialize" will load runtime ucode */
2247 iwl4965_nic_start(priv);
2248
2249 IWL_DEBUG_INFO(DRV_NAME " is coming up\n");
2250
2251 return 0;
2252 }
2253
2254 set_bit(STATUS_EXIT_PENDING, &priv->status);
2255 __iwl4965_down(priv);
2256 clear_bit(STATUS_EXIT_PENDING, &priv->status);
2257
2258 /* tried to restart and config the device for as long as our
2259 * patience could withstand */
2260 IWL_ERROR("Unable to initialize device after %d attempts.\n", i);
2261 return -EIO;
2262 }
2263
2264
2265 /*****************************************************************************
2266 *
2267 * Workqueue callbacks
2268 *
2269 *****************************************************************************/
2270
2271 static void iwl_bg_init_alive_start(struct work_struct *data)
2272 {
2273 struct iwl_priv *priv =
2274 container_of(data, struct iwl_priv, init_alive_start.work);
2275
2276 if (test_bit(STATUS_EXIT_PENDING, &priv->status))
2277 return;
2278
2279 mutex_lock(&priv->mutex);
2280 priv->cfg->ops->lib->init_alive_start(priv);
2281 mutex_unlock(&priv->mutex);
2282 }
2283
2284 static void iwl_bg_alive_start(struct work_struct *data)
2285 {
2286 struct iwl_priv *priv =
2287 container_of(data, struct iwl_priv, alive_start.work);
2288
2289 if (test_bit(STATUS_EXIT_PENDING, &priv->status))
2290 return;
2291
2292 mutex_lock(&priv->mutex);
2293 iwl_alive_start(priv);
2294 mutex_unlock(&priv->mutex);
2295 }
2296
2297 static void iwl4965_bg_rf_kill(struct work_struct *work)
2298 {
2299 struct iwl_priv *priv = container_of(work, struct iwl_priv, rf_kill);
2300
2301 wake_up_interruptible(&priv->wait_command_queue);
2302
2303 if (test_bit(STATUS_EXIT_PENDING, &priv->status))
2304 return;
2305
2306 mutex_lock(&priv->mutex);
2307
2308 if (!iwl_is_rfkill(priv)) {
2309 IWL_DEBUG(IWL_DL_RF_KILL,
2310 "HW and/or SW RF Kill no longer active, restarting "
2311 "device\n");
2312 if (!test_bit(STATUS_EXIT_PENDING, &priv->status))
2313 queue_work(priv->workqueue, &priv->restart);
2314 } else {
2315 /* make sure mac80211 stop sending Tx frame */
2316 if (priv->mac80211_registered)
2317 ieee80211_stop_queues(priv->hw);
2318
2319 if (!test_bit(STATUS_RF_KILL_HW, &priv->status))
2320 IWL_DEBUG_RF_KILL("Can not turn radio back on - "
2321 "disabled by SW switch\n");
2322 else
2323 IWL_WARNING("Radio Frequency Kill Switch is On:\n"
2324 "Kill switch must be turned off for "
2325 "wireless networking to work.\n");
2326 }
2327 iwl_rfkill_set_hw_state(priv);
2328
2329 mutex_unlock(&priv->mutex);
2330 }
2331
2332 static void iwl4965_bg_set_monitor(struct work_struct *work)
2333 {
2334 struct iwl_priv *priv = container_of(work,
2335 struct iwl_priv, set_monitor);
2336 int ret;
2337
2338 IWL_DEBUG(IWL_DL_STATE, "setting monitor mode\n");
2339
2340 mutex_lock(&priv->mutex);
2341
2342 ret = iwl4965_set_mode(priv, IEEE80211_IF_TYPE_MNTR);
2343
2344 if (ret) {
2345 if (ret == -EAGAIN)
2346 IWL_DEBUG(IWL_DL_STATE, "leave - not ready\n");
2347 else
2348 IWL_ERROR("iwl4965_set_mode() failed ret = %d\n", ret);
2349 }
2350
2351 mutex_unlock(&priv->mutex);
2352 }
2353
2354 static void iwl_bg_run_time_calib_work(struct work_struct *work)
2355 {
2356 struct iwl_priv *priv = container_of(work, struct iwl_priv,
2357 run_time_calib_work);
2358
2359 mutex_lock(&priv->mutex);
2360
2361 if (test_bit(STATUS_EXIT_PENDING, &priv->status) ||
2362 test_bit(STATUS_SCANNING, &priv->status)) {
2363 mutex_unlock(&priv->mutex);
2364 return;
2365 }
2366
2367 if (priv->start_calib) {
2368 iwl_chain_noise_calibration(priv, &priv->statistics);
2369
2370 iwl_sensitivity_calibration(priv, &priv->statistics);
2371 }
2372
2373 mutex_unlock(&priv->mutex);
2374 return;
2375 }
2376
2377 static void iwl4965_bg_up(struct work_struct *data)
2378 {
2379 struct iwl_priv *priv = container_of(data, struct iwl_priv, up);
2380
2381 if (test_bit(STATUS_EXIT_PENDING, &priv->status))
2382 return;
2383
2384 mutex_lock(&priv->mutex);
2385 __iwl4965_up(priv);
2386 mutex_unlock(&priv->mutex);
2387 }
2388
2389 static void iwl4965_bg_restart(struct work_struct *data)
2390 {
2391 struct iwl_priv *priv = container_of(data, struct iwl_priv, restart);
2392
2393 if (test_bit(STATUS_EXIT_PENDING, &priv->status))
2394 return;
2395
2396 iwl4965_down(priv);
2397 queue_work(priv->workqueue, &priv->up);
2398 }
2399
2400 static void iwl4965_bg_rx_replenish(struct work_struct *data)
2401 {
2402 struct iwl_priv *priv =
2403 container_of(data, struct iwl_priv, rx_replenish);
2404
2405 if (test_bit(STATUS_EXIT_PENDING, &priv->status))
2406 return;
2407
2408 mutex_lock(&priv->mutex);
2409 iwl_rx_replenish(priv);
2410 mutex_unlock(&priv->mutex);
2411 }
2412
2413 #define IWL_DELAY_NEXT_SCAN (HZ*2)
2414
2415 static void iwl4965_post_associate(struct iwl_priv *priv)
2416 {
2417 struct ieee80211_conf *conf = NULL;
2418 int ret = 0;
2419 DECLARE_MAC_BUF(mac);
2420
2421 if (priv->iw_mode == IEEE80211_IF_TYPE_AP) {
2422 IWL_ERROR("%s Should not be called in AP mode\n", __FUNCTION__);
2423 return;
2424 }
2425
2426 IWL_DEBUG_ASSOC("Associated as %d to: %s\n",
2427 priv->assoc_id,
2428 print_mac(mac, priv->active_rxon.bssid_addr));
2429
2430
2431 if (test_bit(STATUS_EXIT_PENDING, &priv->status))
2432 return;
2433
2434
2435 if (!priv->vif || !priv->is_open)
2436 return;
2437
2438 iwl_scan_cancel_timeout(priv, 200);
2439
2440 conf = ieee80211_get_hw_conf(priv->hw);
2441
2442 priv->staging_rxon.filter_flags &= ~RXON_FILTER_ASSOC_MSK;
2443 iwl4965_commit_rxon(priv);
2444
2445 memset(&priv->rxon_timing, 0, sizeof(struct iwl4965_rxon_time_cmd));
2446 iwl4965_setup_rxon_timing(priv);
2447 ret = iwl_send_cmd_pdu(priv, REPLY_RXON_TIMING,
2448 sizeof(priv->rxon_timing), &priv->rxon_timing);
2449 if (ret)
2450 IWL_WARNING("REPLY_RXON_TIMING failed - "
2451 "Attempting to continue.\n");
2452
2453 priv->staging_rxon.filter_flags |= RXON_FILTER_ASSOC_MSK;
2454
2455 if (priv->current_ht_config.is_ht)
2456 iwl_set_rxon_ht(priv, &priv->current_ht_config);
2457
2458 iwl_set_rxon_chain(priv);
2459 priv->staging_rxon.assoc_id = cpu_to_le16(priv->assoc_id);
2460
2461 IWL_DEBUG_ASSOC("assoc id %d beacon interval %d\n",
2462 priv->assoc_id, priv->beacon_int);
2463
2464 if (priv->assoc_capability & WLAN_CAPABILITY_SHORT_PREAMBLE)
2465 priv->staging_rxon.flags |= RXON_FLG_SHORT_PREAMBLE_MSK;
2466 else
2467 priv->staging_rxon.flags &= ~RXON_FLG_SHORT_PREAMBLE_MSK;
2468
2469 if (priv->staging_rxon.flags & RXON_FLG_BAND_24G_MSK) {
2470 if (priv->assoc_capability & WLAN_CAPABILITY_SHORT_SLOT_TIME)
2471 priv->staging_rxon.flags |= RXON_FLG_SHORT_SLOT_MSK;
2472 else
2473 priv->staging_rxon.flags &= ~RXON_FLG_SHORT_SLOT_MSK;
2474
2475 if (priv->iw_mode == IEEE80211_IF_TYPE_IBSS)
2476 priv->staging_rxon.flags &= ~RXON_FLG_SHORT_SLOT_MSK;
2477
2478 }
2479
2480 iwl4965_commit_rxon(priv);
2481
2482 switch (priv->iw_mode) {
2483 case IEEE80211_IF_TYPE_STA:
2484 iwl4965_rate_scale_init(priv->hw, IWL_AP_ID);
2485 break;
2486
2487 case IEEE80211_IF_TYPE_IBSS:
2488
2489 /* assume default assoc id */
2490 priv->assoc_id = 1;
2491
2492 iwl_rxon_add_station(priv, priv->bssid, 0);
2493 iwl4965_rate_scale_init(priv->hw, IWL_STA_ID);
2494 iwl4965_send_beacon_cmd(priv);
2495
2496 break;
2497
2498 default:
2499 IWL_ERROR("%s Should not be called in %d mode\n",
2500 __FUNCTION__, priv->iw_mode);
2501 break;
2502 }
2503
2504 /* Enable Rx differential gain and sensitivity calibrations */
2505 iwl_chain_noise_reset(priv);
2506 priv->start_calib = 1;
2507
2508 if (priv->iw_mode == IEEE80211_IF_TYPE_IBSS)
2509 priv->assoc_station_added = 1;
2510
2511 iwl4965_activate_qos(priv, 0);
2512
2513 iwl_power_update_mode(priv, 0);
2514 /* we have just associated, don't start scan too early */
2515 priv->next_scan_jiffies = jiffies + IWL_DELAY_NEXT_SCAN;
2516 }
2517
2518
2519 static void iwl4965_bg_post_associate(struct work_struct *data)
2520 {
2521 struct iwl_priv *priv = container_of(data, struct iwl_priv,
2522 post_associate.work);
2523
2524 mutex_lock(&priv->mutex);
2525 iwl4965_post_associate(priv);
2526 mutex_unlock(&priv->mutex);
2527
2528 }
2529
2530 static int iwl4965_mac_config(struct ieee80211_hw *hw, struct ieee80211_conf *conf);
2531
2532 static void iwl_bg_scan_completed(struct work_struct *work)
2533 {
2534 struct iwl_priv *priv =
2535 container_of(work, struct iwl_priv, scan_completed);
2536
2537 IWL_DEBUG_SCAN("SCAN complete scan\n");
2538
2539 if (test_bit(STATUS_EXIT_PENDING, &priv->status))
2540 return;
2541
2542 if (test_bit(STATUS_CONF_PENDING, &priv->status))
2543 iwl4965_mac_config(priv->hw, ieee80211_get_hw_conf(priv->hw));
2544
2545 ieee80211_scan_completed(priv->hw);
2546
2547 /* Since setting the TXPOWER may have been deferred while
2548 * performing the scan, fire one off */
2549 mutex_lock(&priv->mutex);
2550 iwl_set_tx_power(priv, priv->tx_power_user_lmt, true);
2551 mutex_unlock(&priv->mutex);
2552 }
2553
2554 /*****************************************************************************
2555 *
2556 * mac80211 entry point functions
2557 *
2558 *****************************************************************************/
2559
2560 #define UCODE_READY_TIMEOUT (2 * HZ)
2561
2562 static int iwl4965_mac_start(struct ieee80211_hw *hw)
2563 {
2564 struct iwl_priv *priv = hw->priv;
2565 int ret;
2566
2567 IWL_DEBUG_MAC80211("enter\n");
2568
2569 if (pci_enable_device(priv->pci_dev)) {
2570 IWL_ERROR("Fail to pci_enable_device\n");
2571 return -ENODEV;
2572 }
2573 pci_restore_state(priv->pci_dev);
2574 pci_enable_msi(priv->pci_dev);
2575
2576 ret = request_irq(priv->pci_dev->irq, iwl4965_isr, IRQF_SHARED,
2577 DRV_NAME, priv);
2578 if (ret) {
2579 IWL_ERROR("Error allocating IRQ %d\n", priv->pci_dev->irq);
2580 goto out_disable_msi;
2581 }
2582
2583 /* we should be verifying the device is ready to be opened */
2584 mutex_lock(&priv->mutex);
2585
2586 memset(&priv->staging_rxon, 0, sizeof(struct iwl_rxon_cmd));
2587 /* fetch ucode file from disk, alloc and copy to bus-master buffers ...
2588 * ucode filename and max sizes are card-specific. */
2589
2590 if (!priv->ucode_code.len) {
2591 ret = iwl4965_read_ucode(priv);
2592 if (ret) {
2593 IWL_ERROR("Could not read microcode: %d\n", ret);
2594 mutex_unlock(&priv->mutex);
2595 goto out_release_irq;
2596 }
2597 }
2598
2599 ret = __iwl4965_up(priv);
2600
2601 mutex_unlock(&priv->mutex);
2602
2603 if (ret)
2604 goto out_release_irq;
2605
2606 IWL_DEBUG_INFO("Start UP work done.\n");
2607
2608 if (test_bit(STATUS_IN_SUSPEND, &priv->status))
2609 return 0;
2610
2611 /* Wait for START_ALIVE from Run Time ucode. Otherwise callbacks from
2612 * mac80211 will not be run successfully. */
2613 if (priv->ucode_type == UCODE_RT) {
2614 ret = wait_event_interruptible_timeout(priv->wait_command_queue,
2615 test_bit(STATUS_READY, &priv->status),
2616 UCODE_READY_TIMEOUT);
2617 if (!ret) {
2618 if (!test_bit(STATUS_READY, &priv->status)) {
2619 IWL_ERROR("START_ALIVE timeout after %dms.\n",
2620 jiffies_to_msecs(UCODE_READY_TIMEOUT));
2621 ret = -ETIMEDOUT;
2622 goto out_release_irq;
2623 }
2624 }
2625
2626 priv->is_open = 1;
2627 }
2628 IWL_DEBUG_MAC80211("leave\n");
2629 return 0;
2630
2631 out_release_irq:
2632 free_irq(priv->pci_dev->irq, priv);
2633 out_disable_msi:
2634 pci_disable_msi(priv->pci_dev);
2635 pci_disable_device(priv->pci_dev);
2636 priv->is_open = 0;
2637 IWL_DEBUG_MAC80211("leave - failed\n");
2638 return ret;
2639 }
2640
2641 static void iwl4965_mac_stop(struct ieee80211_hw *hw)
2642 {
2643 struct iwl_priv *priv = hw->priv;
2644
2645 IWL_DEBUG_MAC80211("enter\n");
2646
2647 if (!priv->is_open) {
2648 IWL_DEBUG_MAC80211("leave - skip\n");
2649 return;
2650 }
2651
2652 priv->is_open = 0;
2653
2654 if (iwl_is_ready_rf(priv)) {
2655 /* stop mac, cancel any scan request and clear
2656 * RXON_FILTER_ASSOC_MSK BIT
2657 */
2658 mutex_lock(&priv->mutex);
2659 iwl_scan_cancel_timeout(priv, 100);
2660 cancel_delayed_work(&priv->post_associate);
2661 mutex_unlock(&priv->mutex);
2662 }
2663
2664 iwl4965_down(priv);
2665
2666 flush_workqueue(priv->workqueue);
2667 free_irq(priv->pci_dev->irq, priv);
2668 pci_disable_msi(priv->pci_dev);
2669 pci_save_state(priv->pci_dev);
2670 pci_disable_device(priv->pci_dev);
2671
2672 IWL_DEBUG_MAC80211("leave\n");
2673 }
2674
2675 static int iwl4965_mac_tx(struct ieee80211_hw *hw, struct sk_buff *skb)
2676 {
2677 struct iwl_priv *priv = hw->priv;
2678
2679 IWL_DEBUG_MAC80211("enter\n");
2680
2681 if (priv->iw_mode == IEEE80211_IF_TYPE_MNTR) {
2682 IWL_DEBUG_MAC80211("leave - monitor\n");
2683 return -1;
2684 }
2685
2686 IWL_DEBUG_TX("dev->xmit(%d bytes) at rate 0x%02x\n", skb->len,
2687 ieee80211_get_tx_rate(hw, IEEE80211_SKB_CB(skb))->bitrate);
2688
2689 if (iwl_tx_skb(priv, skb))
2690 dev_kfree_skb_any(skb);
2691
2692 IWL_DEBUG_MAC80211("leave\n");
2693 return 0;
2694 }
2695
2696 static int iwl4965_mac_add_interface(struct ieee80211_hw *hw,
2697 struct ieee80211_if_init_conf *conf)
2698 {
2699 struct iwl_priv *priv = hw->priv;
2700 unsigned long flags;
2701 DECLARE_MAC_BUF(mac);
2702
2703 IWL_DEBUG_MAC80211("enter: type %d\n", conf->type);
2704
2705 if (priv->vif) {
2706 IWL_DEBUG_MAC80211("leave - vif != NULL\n");
2707 return -EOPNOTSUPP;
2708 }
2709
2710 spin_lock_irqsave(&priv->lock, flags);
2711 priv->vif = conf->vif;
2712
2713 spin_unlock_irqrestore(&priv->lock, flags);
2714
2715 mutex_lock(&priv->mutex);
2716
2717 if (conf->mac_addr) {
2718 IWL_DEBUG_MAC80211("Set %s\n", print_mac(mac, conf->mac_addr));
2719 memcpy(priv->mac_addr, conf->mac_addr, ETH_ALEN);
2720 }
2721
2722 if (iwl4965_set_mode(priv, conf->type) == -EAGAIN)
2723 /* we are not ready, will run again when ready */
2724 set_bit(STATUS_MODE_PENDING, &priv->status);
2725
2726 mutex_unlock(&priv->mutex);
2727
2728 IWL_DEBUG_MAC80211("leave\n");
2729 return 0;
2730 }
2731
2732 /**
2733 * iwl4965_mac_config - mac80211 config callback
2734 *
2735 * We ignore conf->flags & IEEE80211_CONF_SHORT_SLOT_TIME since it seems to
2736 * be set inappropriately and the driver currently sets the hardware up to
2737 * use it whenever needed.
2738 */
2739 static int iwl4965_mac_config(struct ieee80211_hw *hw, struct ieee80211_conf *conf)
2740 {
2741 struct iwl_priv *priv = hw->priv;
2742 const struct iwl_channel_info *ch_info;
2743 unsigned long flags;
2744 int ret = 0;
2745 u16 channel;
2746
2747 mutex_lock(&priv->mutex);
2748 IWL_DEBUG_MAC80211("enter to channel %d\n", conf->channel->hw_value);
2749
2750 priv->add_radiotap = !!(conf->flags & IEEE80211_CONF_RADIOTAP);
2751
2752 if (conf->radio_enabled && iwl_radio_kill_sw_enable_radio(priv)) {
2753 IWL_DEBUG_MAC80211("leave - RF-KILL - waiting for uCode\n");
2754 goto out;
2755 }
2756
2757 if (!conf->radio_enabled)
2758 iwl_radio_kill_sw_disable_radio(priv);
2759
2760 if (!iwl_is_ready(priv)) {
2761 IWL_DEBUG_MAC80211("leave - not ready\n");
2762 ret = -EIO;
2763 goto out;
2764 }
2765
2766 if (unlikely(!priv->cfg->mod_params->disable_hw_scan &&
2767 test_bit(STATUS_SCANNING, &priv->status))) {
2768 IWL_DEBUG_MAC80211("leave - scanning\n");
2769 set_bit(STATUS_CONF_PENDING, &priv->status);
2770 mutex_unlock(&priv->mutex);
2771 return 0;
2772 }
2773
2774 channel = ieee80211_frequency_to_channel(conf->channel->center_freq);
2775 ch_info = iwl_get_channel_info(priv, conf->channel->band, channel);
2776 if (!is_channel_valid(ch_info)) {
2777 IWL_DEBUG_MAC80211("leave - invalid channel\n");
2778 ret = -EINVAL;
2779 goto out;
2780 }
2781
2782 if (priv->iw_mode == IEEE80211_IF_TYPE_IBSS &&
2783 !is_channel_ibss(ch_info)) {
2784 IWL_ERROR("channel %d in band %d not IBSS channel\n",
2785 conf->channel->hw_value, conf->channel->band);
2786 ret = -EINVAL;
2787 goto out;
2788 }
2789
2790 spin_lock_irqsave(&priv->lock, flags);
2791
2792 /* if we are switching from ht to 2.4 clear flags
2793 * from any ht related info since 2.4 does not
2794 * support ht */
2795 if ((le16_to_cpu(priv->staging_rxon.channel) != channel)
2796 #ifdef IEEE80211_CONF_CHANNEL_SWITCH
2797 && !(conf->flags & IEEE80211_CONF_CHANNEL_SWITCH)
2798 #endif
2799 )
2800 priv->staging_rxon.flags = 0;
2801
2802 iwl_set_rxon_channel(priv, conf->channel->band, channel);
2803
2804 iwl_set_flags_for_band(priv, conf->channel->band);
2805
2806 /* The list of supported rates and rate mask can be different
2807 * for each band; since the band may have changed, reset
2808 * the rate mask to what mac80211 lists */
2809 iwl4965_set_rate(priv);
2810
2811 spin_unlock_irqrestore(&priv->lock, flags);
2812
2813 #ifdef IEEE80211_CONF_CHANNEL_SWITCH
2814 if (conf->flags & IEEE80211_CONF_CHANNEL_SWITCH) {
2815 iwl4965_hw_channel_switch(priv, conf->channel);
2816 goto out;
2817 }
2818 #endif
2819
2820 if (!conf->radio_enabled) {
2821 IWL_DEBUG_MAC80211("leave - radio disabled\n");
2822 goto out;
2823 }
2824
2825 if (iwl_is_rfkill(priv)) {
2826 IWL_DEBUG_MAC80211("leave - RF kill\n");
2827 ret = -EIO;
2828 goto out;
2829 }
2830
2831 IWL_DEBUG_MAC80211("TX Power old=%d new=%d\n",
2832 priv->tx_power_user_lmt, conf->power_level);
2833
2834 iwl_set_tx_power(priv, conf->power_level, false);
2835
2836 iwl4965_set_rate(priv);
2837
2838 if (memcmp(&priv->active_rxon,
2839 &priv->staging_rxon, sizeof(priv->staging_rxon)))
2840 iwl4965_commit_rxon(priv);
2841 else
2842 IWL_DEBUG_INFO("No re-sending same RXON configuration.\n");
2843
2844 IWL_DEBUG_MAC80211("leave\n");
2845
2846 out:
2847 clear_bit(STATUS_CONF_PENDING, &priv->status);
2848 mutex_unlock(&priv->mutex);
2849 return ret;
2850 }
2851
2852 static void iwl4965_config_ap(struct iwl_priv *priv)
2853 {
2854 int ret = 0;
2855
2856 if (test_bit(STATUS_EXIT_PENDING, &priv->status))
2857 return;
2858
2859 /* The following should be done only at AP bring up */
2860 if (!(iwl_is_associated(priv))) {
2861
2862 /* RXON - unassoc (to set timing command) */
2863 priv->staging_rxon.filter_flags &= ~RXON_FILTER_ASSOC_MSK;
2864 iwl4965_commit_rxon(priv);
2865
2866 /* RXON Timing */
2867 memset(&priv->rxon_timing, 0, sizeof(struct iwl4965_rxon_time_cmd));
2868 iwl4965_setup_rxon_timing(priv);
2869 ret = iwl_send_cmd_pdu(priv, REPLY_RXON_TIMING,
2870 sizeof(priv->rxon_timing), &priv->rxon_timing);
2871 if (ret)
2872 IWL_WARNING("REPLY_RXON_TIMING failed - "
2873 "Attempting to continue.\n");
2874
2875 iwl_set_rxon_chain(priv);
2876
2877 /* FIXME: what should be the assoc_id for AP? */
2878 priv->staging_rxon.assoc_id = cpu_to_le16(priv->assoc_id);
2879 if (priv->assoc_capability & WLAN_CAPABILITY_SHORT_PREAMBLE)
2880 priv->staging_rxon.flags |=
2881 RXON_FLG_SHORT_PREAMBLE_MSK;
2882 else
2883 priv->staging_rxon.flags &=
2884 ~RXON_FLG_SHORT_PREAMBLE_MSK;
2885
2886 if (priv->staging_rxon.flags & RXON_FLG_BAND_24G_MSK) {
2887 if (priv->assoc_capability &
2888 WLAN_CAPABILITY_SHORT_SLOT_TIME)
2889 priv->staging_rxon.flags |=
2890 RXON_FLG_SHORT_SLOT_MSK;
2891 else
2892 priv->staging_rxon.flags &=
2893 ~RXON_FLG_SHORT_SLOT_MSK;
2894
2895 if (priv->iw_mode == IEEE80211_IF_TYPE_IBSS)
2896 priv->staging_rxon.flags &=
2897 ~RXON_FLG_SHORT_SLOT_MSK;
2898 }
2899 /* restore RXON assoc */
2900 priv->staging_rxon.filter_flags |= RXON_FILTER_ASSOC_MSK;
2901 iwl4965_commit_rxon(priv);
2902 iwl4965_activate_qos(priv, 1);
2903 iwl_rxon_add_station(priv, iwl_bcast_addr, 0);
2904 }
2905 iwl4965_send_beacon_cmd(priv);
2906
2907 /* FIXME - we need to add code here to detect a totally new
2908 * configuration, reset the AP, unassoc, rxon timing, assoc,
2909 * clear sta table, add BCAST sta... */
2910 }
2911
2912 static int iwl4965_mac_config_interface(struct ieee80211_hw *hw,
2913 struct ieee80211_vif *vif,
2914 struct ieee80211_if_conf *conf)
2915 {
2916 struct iwl_priv *priv = hw->priv;
2917 DECLARE_MAC_BUF(mac);
2918 unsigned long flags;
2919 int rc;
2920
2921 if (conf == NULL)
2922 return -EIO;
2923
2924 if (priv->vif != vif) {
2925 IWL_DEBUG_MAC80211("leave - priv->vif != vif\n");
2926 return 0;
2927 }
2928
2929 if ((priv->iw_mode == IEEE80211_IF_TYPE_AP) &&
2930 (!conf->beacon || !conf->ssid_len)) {
2931 IWL_DEBUG_MAC80211
2932 ("Leaving in AP mode because HostAPD is not ready.\n");
2933 return 0;
2934 }
2935
2936 if (!iwl_is_alive(priv))
2937 return -EAGAIN;
2938
2939 mutex_lock(&priv->mutex);
2940
2941 if (conf->bssid)
2942 IWL_DEBUG_MAC80211("bssid: %s\n",
2943 print_mac(mac, conf->bssid));
2944
2945 /*
2946 * very dubious code was here; the probe filtering flag is never set:
2947 *
2948 if (unlikely(test_bit(STATUS_SCANNING, &priv->status)) &&
2949 !(priv->hw->flags & IEEE80211_HW_NO_PROBE_FILTERING)) {
2950 */
2951
2952 if (priv->iw_mode == IEEE80211_IF_TYPE_AP) {
2953 if (!conf->bssid) {
2954 conf->bssid = priv->mac_addr;
2955 memcpy(priv->bssid, priv->mac_addr, ETH_ALEN);
2956 IWL_DEBUG_MAC80211("bssid was set to: %s\n",
2957 print_mac(mac, conf->bssid));
2958 }
2959 if (priv->ibss_beacon)
2960 dev_kfree_skb(priv->ibss_beacon);
2961
2962 priv->ibss_beacon = conf->beacon;
2963 }
2964
2965 if (iwl_is_rfkill(priv))
2966 goto done;
2967
2968 if (conf->bssid && !is_zero_ether_addr(conf->bssid) &&
2969 !is_multicast_ether_addr(conf->bssid)) {
2970 /* If there is currently a HW scan going on in the background
2971 * then we need to cancel it else the RXON below will fail. */
2972 if (iwl_scan_cancel_timeout(priv, 100)) {
2973 IWL_WARNING("Aborted scan still in progress "
2974 "after 100ms\n");
2975 IWL_DEBUG_MAC80211("leaving - scan abort failed.\n");
2976 mutex_unlock(&priv->mutex);
2977 return -EAGAIN;
2978 }
2979 memcpy(priv->staging_rxon.bssid_addr, conf->bssid, ETH_ALEN);
2980
2981 /* TODO: Audit driver for usage of these members and see
2982 * if mac80211 deprecates them (priv->bssid looks like it
2983 * shouldn't be there, but I haven't scanned the IBSS code
2984 * to verify) - jpk */
2985 memcpy(priv->bssid, conf->bssid, ETH_ALEN);
2986
2987 if (priv->iw_mode == IEEE80211_IF_TYPE_AP)
2988 iwl4965_config_ap(priv);
2989 else {
2990 rc = iwl4965_commit_rxon(priv);
2991 if ((priv->iw_mode == IEEE80211_IF_TYPE_STA) && rc)
2992 iwl_rxon_add_station(
2993 priv, priv->active_rxon.bssid_addr, 1);
2994 }
2995
2996 } else {
2997 iwl_scan_cancel_timeout(priv, 100);
2998 priv->staging_rxon.filter_flags &= ~RXON_FILTER_ASSOC_MSK;
2999 iwl4965_commit_rxon(priv);
3000 }
3001
3002 done:
3003 spin_lock_irqsave(&priv->lock, flags);
3004 if (!conf->ssid_len)
3005 memset(priv->essid, 0, IW_ESSID_MAX_SIZE);
3006 else
3007 memcpy(priv->essid, conf->ssid, conf->ssid_len);
3008
3009 priv->essid_len = conf->ssid_len;
3010 spin_unlock_irqrestore(&priv->lock, flags);
3011
3012 IWL_DEBUG_MAC80211("leave\n");
3013 mutex_unlock(&priv->mutex);
3014
3015 return 0;
3016 }
3017
3018 static void iwl4965_configure_filter(struct ieee80211_hw *hw,
3019 unsigned int changed_flags,
3020 unsigned int *total_flags,
3021 int mc_count, struct dev_addr_list *mc_list)
3022 {
3023 /*
3024 * XXX: dummy
3025 * see also iwl4965_connection_init_rx_config
3026 */
3027 struct iwl_priv *priv = hw->priv;
3028 int new_flags = 0;
3029 if (changed_flags & (FIF_PROMISC_IN_BSS | FIF_OTHER_BSS)) {
3030 if (*total_flags & (FIF_PROMISC_IN_BSS | FIF_OTHER_BSS)) {
3031 IWL_DEBUG_MAC80211("Enter: type %d (0x%x, 0x%x)\n",
3032 IEEE80211_IF_TYPE_MNTR,
3033 changed_flags, *total_flags);
3034 /* queue work 'cuz mac80211 is holding a lock which
3035 * prevents us from issuing (synchronous) f/w cmds */
3036 queue_work(priv->workqueue, &priv->set_monitor);
3037 new_flags &= FIF_PROMISC_IN_BSS |
3038 FIF_OTHER_BSS |
3039 FIF_ALLMULTI;
3040 }
3041 }
3042 *total_flags = new_flags;
3043 }
3044
3045 static void iwl4965_mac_remove_interface(struct ieee80211_hw *hw,
3046 struct ieee80211_if_init_conf *conf)
3047 {
3048 struct iwl_priv *priv = hw->priv;
3049
3050 IWL_DEBUG_MAC80211("enter\n");
3051
3052 mutex_lock(&priv->mutex);
3053
3054 if (iwl_is_ready_rf(priv)) {
3055 iwl_scan_cancel_timeout(priv, 100);
3056 cancel_delayed_work(&priv->post_associate);
3057 priv->staging_rxon.filter_flags &= ~RXON_FILTER_ASSOC_MSK;
3058 iwl4965_commit_rxon(priv);
3059 }
3060 if (priv->vif == conf->vif) {
3061 priv->vif = NULL;
3062 memset(priv->bssid, 0, ETH_ALEN);
3063 memset(priv->essid, 0, IW_ESSID_MAX_SIZE);
3064 priv->essid_len = 0;
3065 }
3066 mutex_unlock(&priv->mutex);
3067
3068 IWL_DEBUG_MAC80211("leave\n");
3069
3070 }
3071
3072 #define IWL_DELAY_NEXT_SCAN_AFTER_ASSOC (HZ*6)
3073 static void iwl4965_bss_info_changed(struct ieee80211_hw *hw,
3074 struct ieee80211_vif *vif,
3075 struct ieee80211_bss_conf *bss_conf,
3076 u32 changes)
3077 {
3078 struct iwl_priv *priv = hw->priv;
3079
3080 IWL_DEBUG_MAC80211("changes = 0x%X\n", changes);
3081
3082 if (changes & BSS_CHANGED_ERP_PREAMBLE) {
3083 IWL_DEBUG_MAC80211("ERP_PREAMBLE %d\n",
3084 bss_conf->use_short_preamble);
3085 if (bss_conf->use_short_preamble)
3086 priv->staging_rxon.flags |= RXON_FLG_SHORT_PREAMBLE_MSK;
3087 else
3088 priv->staging_rxon.flags &= ~RXON_FLG_SHORT_PREAMBLE_MSK;
3089 }
3090
3091 if (changes & BSS_CHANGED_ERP_CTS_PROT) {
3092 IWL_DEBUG_MAC80211("ERP_CTS %d\n", bss_conf->use_cts_prot);
3093 if (bss_conf->use_cts_prot && (priv->band != IEEE80211_BAND_5GHZ))
3094 priv->staging_rxon.flags |= RXON_FLG_TGG_PROTECT_MSK;
3095 else
3096 priv->staging_rxon.flags &= ~RXON_FLG_TGG_PROTECT_MSK;
3097 }
3098
3099 if (changes & BSS_CHANGED_HT) {
3100 IWL_DEBUG_MAC80211("HT %d\n", bss_conf->assoc_ht);
3101 iwl4965_ht_conf(priv, bss_conf);
3102 iwl_set_rxon_chain(priv);
3103 }
3104
3105 if (changes & BSS_CHANGED_ASSOC) {
3106 IWL_DEBUG_MAC80211("ASSOC %d\n", bss_conf->assoc);
3107 /* This should never happen as this function should
3108 * never be called from interrupt context. */
3109 if (WARN_ON_ONCE(in_interrupt()))
3110 return;
3111 if (bss_conf->assoc) {
3112 priv->assoc_id = bss_conf->aid;
3113 priv->beacon_int = bss_conf->beacon_int;
3114 priv->timestamp = bss_conf->timestamp;
3115 priv->assoc_capability = bss_conf->assoc_capability;
3116 priv->next_scan_jiffies = jiffies +
3117 IWL_DELAY_NEXT_SCAN_AFTER_ASSOC;
3118 mutex_lock(&priv->mutex);
3119 iwl4965_post_associate(priv);
3120 mutex_unlock(&priv->mutex);
3121 } else {
3122 priv->assoc_id = 0;
3123 IWL_DEBUG_MAC80211("DISASSOC %d\n", bss_conf->assoc);
3124 }
3125 } else if (changes && iwl_is_associated(priv) && priv->assoc_id) {
3126 IWL_DEBUG_MAC80211("Associated Changes %d\n", changes);
3127 iwl_send_rxon_assoc(priv);
3128 }
3129
3130 }
3131
3132 static int iwl4965_mac_hw_scan(struct ieee80211_hw *hw, u8 *ssid, size_t len)
3133 {
3134 int rc = 0;
3135 unsigned long flags;
3136 struct iwl_priv *priv = hw->priv;
3137
3138 IWL_DEBUG_MAC80211("enter\n");
3139
3140 mutex_lock(&priv->mutex);
3141 spin_lock_irqsave(&priv->lock, flags);
3142
3143 if (!iwl_is_ready_rf(priv)) {
3144 rc = -EIO;
3145 IWL_DEBUG_MAC80211("leave - not ready or exit pending\n");
3146 goto out_unlock;
3147 }
3148
3149 if (priv->iw_mode == IEEE80211_IF_TYPE_AP) { /* APs don't scan */
3150 rc = -EIO;
3151 IWL_ERROR("ERROR: APs don't scan\n");
3152 goto out_unlock;
3153 }
3154
3155 /* we don't schedule scan within next_scan_jiffies period */
3156 if (priv->next_scan_jiffies &&
3157 time_after(priv->next_scan_jiffies, jiffies)) {
3158 rc = -EAGAIN;
3159 goto out_unlock;
3160 }
3161 /* if we just finished scan ask for delay */
3162 if (priv->last_scan_jiffies && time_after(priv->last_scan_jiffies +
3163 IWL_DELAY_NEXT_SCAN, jiffies)) {
3164 rc = -EAGAIN;
3165 goto out_unlock;
3166 }
3167 if (len) {
3168 IWL_DEBUG_SCAN("direct scan for %s [%d]\n ",
3169 iwl_escape_essid(ssid, len), (int)len);
3170
3171 priv->one_direct_scan = 1;
3172 priv->direct_ssid_len = (u8)
3173 min((u8) len, (u8) IW_ESSID_MAX_SIZE);
3174 memcpy(priv->direct_ssid, ssid, priv->direct_ssid_len);
3175 } else
3176 priv->one_direct_scan = 0;
3177
3178 rc = iwl_scan_initiate(priv);
3179
3180 IWL_DEBUG_MAC80211("leave\n");
3181
3182 out_unlock:
3183 spin_unlock_irqrestore(&priv->lock, flags);
3184 mutex_unlock(&priv->mutex);
3185
3186 return rc;
3187 }
3188
3189 static void iwl4965_mac_update_tkip_key(struct ieee80211_hw *hw,
3190 struct ieee80211_key_conf *keyconf, const u8 *addr,
3191 u32 iv32, u16 *phase1key)
3192 {
3193 struct iwl_priv *priv = hw->priv;
3194 u8 sta_id = IWL_INVALID_STATION;
3195 unsigned long flags;
3196 __le16 key_flags = 0;
3197 int i;
3198 DECLARE_MAC_BUF(mac);
3199
3200 IWL_DEBUG_MAC80211("enter\n");
3201
3202 sta_id = iwl_find_station(priv, addr);
3203 if (sta_id == IWL_INVALID_STATION) {
3204 IWL_DEBUG_MAC80211("leave - %s not in station map.\n",
3205 print_mac(mac, addr));
3206 return;
3207 }
3208
3209 iwl_scan_cancel_timeout(priv, 100);
3210
3211 key_flags |= (STA_KEY_FLG_TKIP | STA_KEY_FLG_MAP_KEY_MSK);
3212 key_flags |= cpu_to_le16(keyconf->keyidx << STA_KEY_FLG_KEYID_POS);
3213 key_flags &= ~STA_KEY_FLG_INVALID;
3214
3215 if (sta_id == priv->hw_params.bcast_sta_id)
3216 key_flags |= STA_KEY_MULTICAST_MSK;
3217
3218 spin_lock_irqsave(&priv->sta_lock, flags);
3219
3220 priv->stations[sta_id].sta.key.key_flags = key_flags;
3221 priv->stations[sta_id].sta.key.tkip_rx_tsc_byte2 = (u8) iv32;
3222
3223 for (i = 0; i < 5; i++)
3224 priv->stations[sta_id].sta.key.tkip_rx_ttak[i] =
3225 cpu_to_le16(phase1key[i]);
3226
3227 priv->stations[sta_id].sta.sta.modify_mask = STA_MODIFY_KEY_MASK;
3228 priv->stations[sta_id].sta.mode = STA_CONTROL_MODIFY_MSK;
3229
3230 iwl_send_add_sta(priv, &priv->stations[sta_id].sta, CMD_ASYNC);
3231
3232 spin_unlock_irqrestore(&priv->sta_lock, flags);
3233
3234 IWL_DEBUG_MAC80211("leave\n");
3235 }
3236
3237 static int iwl4965_mac_set_key(struct ieee80211_hw *hw, enum set_key_cmd cmd,
3238 const u8 *local_addr, const u8 *addr,
3239 struct ieee80211_key_conf *key)
3240 {
3241 struct iwl_priv *priv = hw->priv;
3242 DECLARE_MAC_BUF(mac);
3243 int ret = 0;
3244 u8 sta_id = IWL_INVALID_STATION;
3245 u8 is_default_wep_key = 0;
3246
3247 IWL_DEBUG_MAC80211("enter\n");
3248
3249 if (priv->hw_params.sw_crypto) {
3250 IWL_DEBUG_MAC80211("leave - hwcrypto disabled\n");
3251 return -EOPNOTSUPP;
3252 }
3253
3254 if (is_zero_ether_addr(addr))
3255 /* only support pairwise keys */
3256 return -EOPNOTSUPP;
3257
3258 sta_id = iwl_find_station(priv, addr);
3259 if (sta_id == IWL_INVALID_STATION) {
3260 IWL_DEBUG_MAC80211("leave - %s not in station map.\n",
3261 print_mac(mac, addr));
3262 return -EINVAL;
3263
3264 }
3265
3266 mutex_lock(&priv->mutex);
3267 iwl_scan_cancel_timeout(priv, 100);
3268 mutex_unlock(&priv->mutex);
3269
3270 /* If we are getting WEP group key and we didn't receive any key mapping
3271 * so far, we are in legacy wep mode (group key only), otherwise we are
3272 * in 1X mode.
3273 * In legacy wep mode, we use another host command to the uCode */
3274 if (key->alg == ALG_WEP && sta_id == priv->hw_params.bcast_sta_id &&
3275 priv->iw_mode != IEEE80211_IF_TYPE_AP) {
3276 if (cmd == SET_KEY)
3277 is_default_wep_key = !priv->key_mapping_key;
3278 else
3279 is_default_wep_key =
3280 (key->hw_key_idx == HW_KEY_DEFAULT);
3281 }
3282
3283 switch (cmd) {
3284 case SET_KEY:
3285 if (is_default_wep_key)
3286 ret = iwl_set_default_wep_key(priv, key);
3287 else
3288 ret = iwl_set_dynamic_key(priv, key, sta_id);
3289
3290 IWL_DEBUG_MAC80211("enable hwcrypto key\n");
3291 break;
3292 case DISABLE_KEY:
3293 if (is_default_wep_key)
3294 ret = iwl_remove_default_wep_key(priv, key);
3295 else
3296 ret = iwl_remove_dynamic_key(priv, key, sta_id);
3297
3298 IWL_DEBUG_MAC80211("disable hwcrypto key\n");
3299 break;
3300 default:
3301 ret = -EINVAL;
3302 }
3303
3304 IWL_DEBUG_MAC80211("leave\n");
3305
3306 return ret;
3307 }
3308
3309 static int iwl4965_mac_conf_tx(struct ieee80211_hw *hw, u16 queue,
3310 const struct ieee80211_tx_queue_params *params)
3311 {
3312 struct iwl_priv *priv = hw->priv;
3313 unsigned long flags;
3314 int q;
3315
3316 IWL_DEBUG_MAC80211("enter\n");
3317
3318 if (!iwl_is_ready_rf(priv)) {
3319 IWL_DEBUG_MAC80211("leave - RF not ready\n");
3320 return -EIO;
3321 }
3322
3323 if (queue >= AC_NUM) {
3324 IWL_DEBUG_MAC80211("leave - queue >= AC_NUM %d\n", queue);
3325 return 0;
3326 }
3327
3328 if (!priv->qos_data.qos_enable) {
3329 priv->qos_data.qos_active = 0;
3330 IWL_DEBUG_MAC80211("leave - qos not enabled\n");
3331 return 0;
3332 }
3333 q = AC_NUM - 1 - queue;
3334
3335 spin_lock_irqsave(&priv->lock, flags);
3336
3337 priv->qos_data.def_qos_parm.ac[q].cw_min = cpu_to_le16(params->cw_min);
3338 priv->qos_data.def_qos_parm.ac[q].cw_max = cpu_to_le16(params->cw_max);
3339 priv->qos_data.def_qos_parm.ac[q].aifsn = params->aifs;
3340 priv->qos_data.def_qos_parm.ac[q].edca_txop =
3341 cpu_to_le16((params->txop * 32));
3342
3343 priv->qos_data.def_qos_parm.ac[q].reserved1 = 0;
3344 priv->qos_data.qos_active = 1;
3345
3346 spin_unlock_irqrestore(&priv->lock, flags);
3347
3348 mutex_lock(&priv->mutex);
3349 if (priv->iw_mode == IEEE80211_IF_TYPE_AP)
3350 iwl4965_activate_qos(priv, 1);
3351 else if (priv->assoc_id && iwl_is_associated(priv))
3352 iwl4965_activate_qos(priv, 0);
3353
3354 mutex_unlock(&priv->mutex);
3355
3356 IWL_DEBUG_MAC80211("leave\n");
3357 return 0;
3358 }
3359
3360 static int iwl4965_mac_get_tx_stats(struct ieee80211_hw *hw,
3361 struct ieee80211_tx_queue_stats *stats)
3362 {
3363 struct iwl_priv *priv = hw->priv;
3364 int i, avail;
3365 struct iwl_tx_queue *txq;
3366 struct iwl_queue *q;
3367 unsigned long flags;
3368
3369 IWL_DEBUG_MAC80211("enter\n");
3370
3371 if (!iwl_is_ready_rf(priv)) {
3372 IWL_DEBUG_MAC80211("leave - RF not ready\n");
3373 return -EIO;
3374 }
3375
3376 spin_lock_irqsave(&priv->lock, flags);
3377
3378 for (i = 0; i < AC_NUM; i++) {
3379 txq = &priv->txq[i];
3380 q = &txq->q;
3381 avail = iwl_queue_space(q);
3382
3383 stats[i].len = q->n_window - avail;
3384 stats[i].limit = q->n_window - q->high_mark;
3385 stats[i].count = q->n_window;
3386
3387 }
3388 spin_unlock_irqrestore(&priv->lock, flags);
3389
3390 IWL_DEBUG_MAC80211("leave\n");
3391
3392 return 0;
3393 }
3394
3395 static int iwl4965_mac_get_stats(struct ieee80211_hw *hw,
3396 struct ieee80211_low_level_stats *stats)
3397 {
3398 struct iwl_priv *priv = hw->priv;
3399
3400 priv = hw->priv;
3401 IWL_DEBUG_MAC80211("enter\n");
3402 IWL_DEBUG_MAC80211("leave\n");
3403
3404 return 0;
3405 }
3406
3407 static u64 iwl4965_mac_get_tsf(struct ieee80211_hw *hw)
3408 {
3409 struct iwl_priv *priv;
3410
3411 priv = hw->priv;
3412 IWL_DEBUG_MAC80211("enter\n");
3413 IWL_DEBUG_MAC80211("leave\n");
3414
3415 return 0;
3416 }
3417
3418 static void iwl4965_mac_reset_tsf(struct ieee80211_hw *hw)
3419 {
3420 struct iwl_priv *priv = hw->priv;
3421 unsigned long flags;
3422
3423 mutex_lock(&priv->mutex);
3424 IWL_DEBUG_MAC80211("enter\n");
3425
3426 priv->lq_mngr.lq_ready = 0;
3427 spin_lock_irqsave(&priv->lock, flags);
3428 memset(&priv->current_ht_config, 0, sizeof(struct iwl_ht_info));
3429 spin_unlock_irqrestore(&priv->lock, flags);
3430
3431 iwl_reset_qos(priv);
3432
3433 cancel_delayed_work(&priv->post_associate);
3434
3435 spin_lock_irqsave(&priv->lock, flags);
3436 priv->assoc_id = 0;
3437 priv->assoc_capability = 0;
3438 priv->assoc_station_added = 0;
3439
3440 /* new association get rid of ibss beacon skb */
3441 if (priv->ibss_beacon)
3442 dev_kfree_skb(priv->ibss_beacon);
3443
3444 priv->ibss_beacon = NULL;
3445
3446 priv->beacon_int = priv->hw->conf.beacon_int;
3447 priv->timestamp = 0;
3448 if ((priv->iw_mode == IEEE80211_IF_TYPE_STA))
3449 priv->beacon_int = 0;
3450
3451 spin_unlock_irqrestore(&priv->lock, flags);
3452
3453 if (!iwl_is_ready_rf(priv)) {
3454 IWL_DEBUG_MAC80211("leave - not ready\n");
3455 mutex_unlock(&priv->mutex);
3456 return;
3457 }
3458
3459 /* we are restarting association process
3460 * clear RXON_FILTER_ASSOC_MSK bit
3461 */
3462 if (priv->iw_mode != IEEE80211_IF_TYPE_AP) {
3463 iwl_scan_cancel_timeout(priv, 100);
3464 priv->staging_rxon.filter_flags &= ~RXON_FILTER_ASSOC_MSK;
3465 iwl4965_commit_rxon(priv);
3466 }
3467
3468 iwl_power_update_mode(priv, 0);
3469
3470 /* Per mac80211.h: This is only used in IBSS mode... */
3471 if (priv->iw_mode != IEEE80211_IF_TYPE_IBSS) {
3472
3473 IWL_DEBUG_MAC80211("leave - not in IBSS\n");
3474 mutex_unlock(&priv->mutex);
3475 return;
3476 }
3477
3478 iwl4965_set_rate(priv);
3479
3480 mutex_unlock(&priv->mutex);
3481
3482 IWL_DEBUG_MAC80211("leave\n");
3483 }
3484
3485 static int iwl4965_mac_beacon_update(struct ieee80211_hw *hw, struct sk_buff *skb)
3486 {
3487 struct iwl_priv *priv = hw->priv;
3488 unsigned long flags;
3489
3490 mutex_lock(&priv->mutex);
3491 IWL_DEBUG_MAC80211("enter\n");
3492
3493 if (!iwl_is_ready_rf(priv)) {
3494 IWL_DEBUG_MAC80211("leave - RF not ready\n");
3495 mutex_unlock(&priv->mutex);
3496 return -EIO;
3497 }
3498
3499 if (priv->iw_mode != IEEE80211_IF_TYPE_IBSS) {
3500 IWL_DEBUG_MAC80211("leave - not IBSS\n");
3501 mutex_unlock(&priv->mutex);
3502 return -EIO;
3503 }
3504
3505 spin_lock_irqsave(&priv->lock, flags);
3506
3507 if (priv->ibss_beacon)
3508 dev_kfree_skb(priv->ibss_beacon);
3509
3510 priv->ibss_beacon = skb;
3511
3512 priv->assoc_id = 0;
3513
3514 IWL_DEBUG_MAC80211("leave\n");
3515 spin_unlock_irqrestore(&priv->lock, flags);
3516
3517 iwl_reset_qos(priv);
3518
3519 iwl4965_post_associate(priv);
3520
3521 mutex_unlock(&priv->mutex);
3522
3523 return 0;
3524 }
3525
3526 /*****************************************************************************
3527 *
3528 * sysfs attributes
3529 *
3530 *****************************************************************************/
3531
3532 #ifdef CONFIG_IWLWIFI_DEBUG
3533
3534 /*
3535 * The following adds a new attribute to the sysfs representation
3536 * of this device driver (i.e. a new file in /sys/bus/pci/drivers/iwl/)
3537 * used for controlling the debug level.
3538 *
3539 * See the level definitions in iwl for details.
3540 */
3541
3542 static ssize_t show_debug_level(struct device *d,
3543 struct device_attribute *attr, char *buf)
3544 {
3545 struct iwl_priv *priv = d->driver_data;
3546
3547 return sprintf(buf, "0x%08X\n", priv->debug_level);
3548 }
3549 static ssize_t store_debug_level(struct device *d,
3550 struct device_attribute *attr,
3551 const char *buf, size_t count)
3552 {
3553 struct iwl_priv *priv = d->driver_data;
3554 char *p = (char *)buf;
3555 u32 val;
3556
3557 val = simple_strtoul(p, &p, 0);
3558 if (p == buf)
3559 printk(KERN_INFO DRV_NAME
3560 ": %s is not in hex or decimal form.\n", buf);
3561 else
3562 priv->debug_level = val;
3563
3564 return strnlen(buf, count);
3565 }
3566
3567 static DEVICE_ATTR(debug_level, S_IWUSR | S_IRUGO,
3568 show_debug_level, store_debug_level);
3569
3570
3571 #endif /* CONFIG_IWLWIFI_DEBUG */
3572
3573
3574 static ssize_t show_version(struct device *d,
3575 struct device_attribute *attr, char *buf)
3576 {
3577 struct iwl_priv *priv = d->driver_data;
3578 struct iwl_alive_resp *palive = &priv->card_alive;
3579 ssize_t pos = 0;
3580 u16 eeprom_ver;
3581
3582 if (palive->is_valid)
3583 pos += sprintf(buf + pos,
3584 "fw version: 0x%01X.0x%01X.0x%01X.0x%01X\n"
3585 "fw type: 0x%01X 0x%01X\n",
3586 palive->ucode_major, palive->ucode_minor,
3587 palive->sw_rev[0], palive->sw_rev[1],
3588 palive->ver_type, palive->ver_subtype);
3589 else
3590 pos += sprintf(buf + pos, "fw not loaded\n");
3591
3592 if (priv->eeprom) {
3593 eeprom_ver = iwl_eeprom_query16(priv, EEPROM_VERSION);
3594 pos += sprintf(buf + pos, "EEPROM version: 0x%x\n",
3595 eeprom_ver);
3596 } else {
3597 pos += sprintf(buf + pos, "EEPROM not initialzed\n");
3598 }
3599
3600 return pos;
3601 }
3602
3603 static DEVICE_ATTR(version, S_IWUSR | S_IRUGO, show_version, NULL);
3604
3605 static ssize_t show_temperature(struct device *d,
3606 struct device_attribute *attr, char *buf)
3607 {
3608 struct iwl_priv *priv = (struct iwl_priv *)d->driver_data;
3609
3610 if (!iwl_is_alive(priv))
3611 return -EAGAIN;
3612
3613 return sprintf(buf, "%d\n", priv->temperature);
3614 }
3615
3616 static DEVICE_ATTR(temperature, S_IRUGO, show_temperature, NULL);
3617
3618 static ssize_t show_rs_window(struct device *d,
3619 struct device_attribute *attr,
3620 char *buf)
3621 {
3622 struct iwl_priv *priv = d->driver_data;
3623 return iwl4965_fill_rs_info(priv->hw, buf, IWL_AP_ID);
3624 }
3625 static DEVICE_ATTR(rs_window, S_IRUGO, show_rs_window, NULL);
3626
3627 static ssize_t show_tx_power(struct device *d,
3628 struct device_attribute *attr, char *buf)
3629 {
3630 struct iwl_priv *priv = (struct iwl_priv *)d->driver_data;
3631 return sprintf(buf, "%d\n", priv->tx_power_user_lmt);
3632 }
3633
3634 static ssize_t store_tx_power(struct device *d,
3635 struct device_attribute *attr,
3636 const char *buf, size_t count)
3637 {
3638 struct iwl_priv *priv = (struct iwl_priv *)d->driver_data;
3639 char *p = (char *)buf;
3640 u32 val;
3641
3642 val = simple_strtoul(p, &p, 10);
3643 if (p == buf)
3644 printk(KERN_INFO DRV_NAME
3645 ": %s is not in decimal form.\n", buf);
3646 else
3647 iwl_set_tx_power(priv, val, false);
3648
3649 return count;
3650 }
3651
3652 static DEVICE_ATTR(tx_power, S_IWUSR | S_IRUGO, show_tx_power, store_tx_power);
3653
3654 static ssize_t show_flags(struct device *d,
3655 struct device_attribute *attr, char *buf)
3656 {
3657 struct iwl_priv *priv = (struct iwl_priv *)d->driver_data;
3658
3659 return sprintf(buf, "0x%04X\n", priv->active_rxon.flags);
3660 }
3661
3662 static ssize_t store_flags(struct device *d,
3663 struct device_attribute *attr,
3664 const char *buf, size_t count)
3665 {
3666 struct iwl_priv *priv = (struct iwl_priv *)d->driver_data;
3667 u32 flags = simple_strtoul(buf, NULL, 0);
3668
3669 mutex_lock(&priv->mutex);
3670 if (le32_to_cpu(priv->staging_rxon.flags) != flags) {
3671 /* Cancel any currently running scans... */
3672 if (iwl_scan_cancel_timeout(priv, 100))
3673 IWL_WARNING("Could not cancel scan.\n");
3674 else {
3675 IWL_DEBUG_INFO("Committing rxon.flags = 0x%04X\n",
3676 flags);
3677 priv->staging_rxon.flags = cpu_to_le32(flags);
3678 iwl4965_commit_rxon(priv);
3679 }
3680 }
3681 mutex_unlock(&priv->mutex);
3682
3683 return count;
3684 }
3685
3686 static DEVICE_ATTR(flags, S_IWUSR | S_IRUGO, show_flags, store_flags);
3687
3688 static ssize_t show_filter_flags(struct device *d,
3689 struct device_attribute *attr, char *buf)
3690 {
3691 struct iwl_priv *priv = (struct iwl_priv *)d->driver_data;
3692
3693 return sprintf(buf, "0x%04X\n",
3694 le32_to_cpu(priv->active_rxon.filter_flags));
3695 }
3696
3697 static ssize_t store_filter_flags(struct device *d,
3698 struct device_attribute *attr,
3699 const char *buf, size_t count)
3700 {
3701 struct iwl_priv *priv = (struct iwl_priv *)d->driver_data;
3702 u32 filter_flags = simple_strtoul(buf, NULL, 0);
3703
3704 mutex_lock(&priv->mutex);
3705 if (le32_to_cpu(priv->staging_rxon.filter_flags) != filter_flags) {
3706 /* Cancel any currently running scans... */
3707 if (iwl_scan_cancel_timeout(priv, 100))
3708 IWL_WARNING("Could not cancel scan.\n");
3709 else {
3710 IWL_DEBUG_INFO("Committing rxon.filter_flags = "
3711 "0x%04X\n", filter_flags);
3712 priv->staging_rxon.filter_flags =
3713 cpu_to_le32(filter_flags);
3714 iwl4965_commit_rxon(priv);
3715 }
3716 }
3717 mutex_unlock(&priv->mutex);
3718
3719 return count;
3720 }
3721
3722 static DEVICE_ATTR(filter_flags, S_IWUSR | S_IRUGO, show_filter_flags,
3723 store_filter_flags);
3724
3725 #ifdef CONFIG_IWL4965_SPECTRUM_MEASUREMENT
3726
3727 static ssize_t show_measurement(struct device *d,
3728 struct device_attribute *attr, char *buf)
3729 {
3730 struct iwl_priv *priv = dev_get_drvdata(d);
3731 struct iwl4965_spectrum_notification measure_report;
3732 u32 size = sizeof(measure_report), len = 0, ofs = 0;
3733 u8 *data = (u8 *) & measure_report;
3734 unsigned long flags;
3735
3736 spin_lock_irqsave(&priv->lock, flags);
3737 if (!(priv->measurement_status & MEASUREMENT_READY)) {
3738 spin_unlock_irqrestore(&priv->lock, flags);
3739 return 0;
3740 }
3741 memcpy(&measure_report, &priv->measure_report, size);
3742 priv->measurement_status = 0;
3743 spin_unlock_irqrestore(&priv->lock, flags);
3744
3745 while (size && (PAGE_SIZE - len)) {
3746 hex_dump_to_buffer(data + ofs, size, 16, 1, buf + len,
3747 PAGE_SIZE - len, 1);
3748 len = strlen(buf);
3749 if (PAGE_SIZE - len)
3750 buf[len++] = '\n';
3751
3752 ofs += 16;
3753 size -= min(size, 16U);
3754 }
3755
3756 return len;
3757 }
3758
3759 static ssize_t store_measurement(struct device *d,
3760 struct device_attribute *attr,
3761 const char *buf, size_t count)
3762 {
3763 struct iwl_priv *priv = dev_get_drvdata(d);
3764 struct ieee80211_measurement_params params = {
3765 .channel = le16_to_cpu(priv->active_rxon.channel),
3766 .start_time = cpu_to_le64(priv->last_tsf),
3767 .duration = cpu_to_le16(1),
3768 };
3769 u8 type = IWL_MEASURE_BASIC;
3770 u8 buffer[32];
3771 u8 channel;
3772
3773 if (count) {
3774 char *p = buffer;
3775 strncpy(buffer, buf, min(sizeof(buffer), count));
3776 channel = simple_strtoul(p, NULL, 0);
3777 if (channel)
3778 params.channel = channel;
3779
3780 p = buffer;
3781 while (*p && *p != ' ')
3782 p++;
3783 if (*p)
3784 type = simple_strtoul(p + 1, NULL, 0);
3785 }
3786
3787 IWL_DEBUG_INFO("Invoking measurement of type %d on "
3788 "channel %d (for '%s')\n", type, params.channel, buf);
3789 iwl4965_get_measurement(priv, &params, type);
3790
3791 return count;
3792 }
3793
3794 static DEVICE_ATTR(measurement, S_IRUSR | S_IWUSR,
3795 show_measurement, store_measurement);
3796 #endif /* CONFIG_IWL4965_SPECTRUM_MEASUREMENT */
3797
3798 static ssize_t store_retry_rate(struct device *d,
3799 struct device_attribute *attr,
3800 const char *buf, size_t count)
3801 {
3802 struct iwl_priv *priv = dev_get_drvdata(d);
3803
3804 priv->retry_rate = simple_strtoul(buf, NULL, 0);
3805 if (priv->retry_rate <= 0)
3806 priv->retry_rate = 1;
3807
3808 return count;
3809 }
3810
3811 static ssize_t show_retry_rate(struct device *d,
3812 struct device_attribute *attr, char *buf)
3813 {
3814 struct iwl_priv *priv = dev_get_drvdata(d);
3815 return sprintf(buf, "%d", priv->retry_rate);
3816 }
3817
3818 static DEVICE_ATTR(retry_rate, S_IWUSR | S_IRUSR, show_retry_rate,
3819 store_retry_rate);
3820
3821 static ssize_t store_power_level(struct device *d,
3822 struct device_attribute *attr,
3823 const char *buf, size_t count)
3824 {
3825 struct iwl_priv *priv = dev_get_drvdata(d);
3826 int rc;
3827 int mode;
3828
3829 mode = simple_strtoul(buf, NULL, 0);
3830 mutex_lock(&priv->mutex);
3831
3832 if (!iwl_is_ready(priv)) {
3833 rc = -EAGAIN;
3834 goto out;
3835 }
3836
3837 rc = iwl_power_set_user_mode(priv, mode);
3838 if (rc) {
3839 IWL_DEBUG_MAC80211("failed setting power mode.\n");
3840 goto out;
3841 }
3842 rc = count;
3843
3844 out:
3845 mutex_unlock(&priv->mutex);
3846 return rc;
3847 }
3848
3849 #define MAX_WX_STRING 80
3850
3851 /* Values are in microsecond */
3852 static const s32 timeout_duration[] = {
3853 350000,
3854 250000,
3855 75000,
3856 37000,
3857 25000,
3858 };
3859 static const s32 period_duration[] = {
3860 400000,
3861 700000,
3862 1000000,
3863 1000000,
3864 1000000
3865 };
3866
3867 static ssize_t show_power_level(struct device *d,
3868 struct device_attribute *attr, char *buf)
3869 {
3870 struct iwl_priv *priv = dev_get_drvdata(d);
3871 int level = priv->power_data.power_mode;
3872 char *p = buf;
3873
3874 p += sprintf(p, "%d ", level);
3875 switch (level) {
3876 case IWL_POWER_MODE_CAM:
3877 case IWL_POWER_AC:
3878 p += sprintf(p, "(AC)");
3879 break;
3880 case IWL_POWER_BATTERY:
3881 p += sprintf(p, "(BATTERY)");
3882 break;
3883 default:
3884 p += sprintf(p,
3885 "(Timeout %dms, Period %dms)",
3886 timeout_duration[level - 1] / 1000,
3887 period_duration[level - 1] / 1000);
3888 }
3889 /*
3890 if (!(priv->power_mode & IWL_POWER_ENABLED))
3891 p += sprintf(p, " OFF\n");
3892 else
3893 p += sprintf(p, " \n");
3894 */
3895 p += sprintf(p, " \n");
3896 return (p - buf + 1);
3897 }
3898
3899 static DEVICE_ATTR(power_level, S_IWUSR | S_IRUSR, show_power_level,
3900 store_power_level);
3901
3902 static ssize_t show_channels(struct device *d,
3903 struct device_attribute *attr, char *buf)
3904 {
3905
3906 struct iwl_priv *priv = dev_get_drvdata(d);
3907 struct ieee80211_channel *channels = NULL;
3908 const struct ieee80211_supported_band *supp_band = NULL;
3909 int len = 0, i;
3910 int count = 0;
3911
3912 if (!test_bit(STATUS_GEO_CONFIGURED, &priv->status))
3913 return -EAGAIN;
3914
3915 supp_band = iwl_get_hw_mode(priv, IEEE80211_BAND_2GHZ);
3916 channels = supp_band->channels;
3917 count = supp_band->n_channels;
3918
3919 len += sprintf(&buf[len],
3920 "Displaying %d channels in 2.4GHz band "
3921 "(802.11bg):\n", count);
3922
3923 for (i = 0; i < count; i++)
3924 len += sprintf(&buf[len], "%d: %ddBm: BSS%s%s, %s.\n",
3925 ieee80211_frequency_to_channel(
3926 channels[i].center_freq),
3927 channels[i].max_power,
3928 channels[i].flags & IEEE80211_CHAN_RADAR ?
3929 " (IEEE 802.11h required)" : "",
3930 (!(channels[i].flags & IEEE80211_CHAN_NO_IBSS)
3931 || (channels[i].flags &
3932 IEEE80211_CHAN_RADAR)) ? "" :
3933 ", IBSS",
3934 channels[i].flags &
3935 IEEE80211_CHAN_PASSIVE_SCAN ?
3936 "passive only" : "active/passive");
3937
3938 supp_band = iwl_get_hw_mode(priv, IEEE80211_BAND_5GHZ);
3939 channels = supp_band->channels;
3940 count = supp_band->n_channels;
3941
3942 len += sprintf(&buf[len], "Displaying %d channels in 5.2GHz band "
3943 "(802.11a):\n", count);
3944
3945 for (i = 0; i < count; i++)
3946 len += sprintf(&buf[len], "%d: %ddBm: BSS%s%s, %s.\n",
3947 ieee80211_frequency_to_channel(
3948 channels[i].center_freq),
3949 channels[i].max_power,
3950 channels[i].flags & IEEE80211_CHAN_RADAR ?
3951 " (IEEE 802.11h required)" : "",
3952 ((channels[i].flags & IEEE80211_CHAN_NO_IBSS)
3953 || (channels[i].flags &
3954 IEEE80211_CHAN_RADAR)) ? "" :
3955 ", IBSS",
3956 channels[i].flags &
3957 IEEE80211_CHAN_PASSIVE_SCAN ?
3958 "passive only" : "active/passive");
3959
3960 return len;
3961 }
3962
3963 static DEVICE_ATTR(channels, S_IRUSR, show_channels, NULL);
3964
3965 static ssize_t show_statistics(struct device *d,
3966 struct device_attribute *attr, char *buf)
3967 {
3968 struct iwl_priv *priv = dev_get_drvdata(d);
3969 u32 size = sizeof(struct iwl_notif_statistics);
3970 u32 len = 0, ofs = 0;
3971 u8 *data = (u8 *) & priv->statistics;
3972 int rc = 0;
3973
3974 if (!iwl_is_alive(priv))
3975 return -EAGAIN;
3976
3977 mutex_lock(&priv->mutex);
3978 rc = iwl_send_statistics_request(priv, 0);
3979 mutex_unlock(&priv->mutex);
3980
3981 if (rc) {
3982 len = sprintf(buf,
3983 "Error sending statistics request: 0x%08X\n", rc);
3984 return len;
3985 }
3986
3987 while (size && (PAGE_SIZE - len)) {
3988 hex_dump_to_buffer(data + ofs, size, 16, 1, buf + len,
3989 PAGE_SIZE - len, 1);
3990 len = strlen(buf);
3991 if (PAGE_SIZE - len)
3992 buf[len++] = '\n';
3993
3994 ofs += 16;
3995 size -= min(size, 16U);
3996 }
3997
3998 return len;
3999 }
4000
4001 static DEVICE_ATTR(statistics, S_IRUGO, show_statistics, NULL);
4002
4003 static ssize_t show_status(struct device *d,
4004 struct device_attribute *attr, char *buf)
4005 {
4006 struct iwl_priv *priv = (struct iwl_priv *)d->driver_data;
4007 if (!iwl_is_alive(priv))
4008 return -EAGAIN;
4009 return sprintf(buf, "0x%08x\n", (int)priv->status);
4010 }
4011
4012 static DEVICE_ATTR(status, S_IRUGO, show_status, NULL);
4013
4014 /*****************************************************************************
4015 *
4016 * driver setup and teardown
4017 *
4018 *****************************************************************************/
4019
4020 static void iwl_setup_deferred_work(struct iwl_priv *priv)
4021 {
4022 priv->workqueue = create_workqueue(DRV_NAME);
4023
4024 init_waitqueue_head(&priv->wait_command_queue);
4025
4026 INIT_WORK(&priv->up, iwl4965_bg_up);
4027 INIT_WORK(&priv->restart, iwl4965_bg_restart);
4028 INIT_WORK(&priv->rx_replenish, iwl4965_bg_rx_replenish);
4029 INIT_WORK(&priv->rf_kill, iwl4965_bg_rf_kill);
4030 INIT_WORK(&priv->beacon_update, iwl4965_bg_beacon_update);
4031 INIT_WORK(&priv->set_monitor, iwl4965_bg_set_monitor);
4032 INIT_WORK(&priv->run_time_calib_work, iwl_bg_run_time_calib_work);
4033 INIT_DELAYED_WORK(&priv->post_associate, iwl4965_bg_post_associate);
4034 INIT_DELAYED_WORK(&priv->init_alive_start, iwl_bg_init_alive_start);
4035 INIT_DELAYED_WORK(&priv->alive_start, iwl_bg_alive_start);
4036
4037 /* FIXME : remove when resolved PENDING */
4038 INIT_WORK(&priv->scan_completed, iwl_bg_scan_completed);
4039 iwl_setup_scan_deferred_work(priv);
4040
4041 if (priv->cfg->ops->lib->setup_deferred_work)
4042 priv->cfg->ops->lib->setup_deferred_work(priv);
4043
4044 init_timer(&priv->statistics_periodic);
4045 priv->statistics_periodic.data = (unsigned long)priv;
4046 priv->statistics_periodic.function = iwl4965_bg_statistics_periodic;
4047
4048 tasklet_init(&priv->irq_tasklet, (void (*)(unsigned long))
4049 iwl4965_irq_tasklet, (unsigned long)priv);
4050 }
4051
4052 static void iwl_cancel_deferred_work(struct iwl_priv *priv)
4053 {
4054 if (priv->cfg->ops->lib->cancel_deferred_work)
4055 priv->cfg->ops->lib->cancel_deferred_work(priv);
4056
4057 cancel_delayed_work_sync(&priv->init_alive_start);
4058 cancel_delayed_work(&priv->scan_check);
4059 cancel_delayed_work(&priv->alive_start);
4060 cancel_delayed_work(&priv->post_associate);
4061 cancel_work_sync(&priv->beacon_update);
4062 del_timer_sync(&priv->statistics_periodic);
4063 }
4064
4065 static struct attribute *iwl4965_sysfs_entries[] = {
4066 &dev_attr_channels.attr,
4067 &dev_attr_flags.attr,
4068 &dev_attr_filter_flags.attr,
4069 #ifdef CONFIG_IWL4965_SPECTRUM_MEASUREMENT
4070 &dev_attr_measurement.attr,
4071 #endif
4072 &dev_attr_power_level.attr,
4073 &dev_attr_retry_rate.attr,
4074 &dev_attr_rs_window.attr,
4075 &dev_attr_statistics.attr,
4076 &dev_attr_status.attr,
4077 &dev_attr_temperature.attr,
4078 &dev_attr_tx_power.attr,
4079 #ifdef CONFIG_IWLWIFI_DEBUG
4080 &dev_attr_debug_level.attr,
4081 #endif
4082 &dev_attr_version.attr,
4083
4084 NULL
4085 };
4086
4087 static struct attribute_group iwl4965_attribute_group = {
4088 .name = NULL, /* put in device directory */
4089 .attrs = iwl4965_sysfs_entries,
4090 };
4091
4092 static struct ieee80211_ops iwl4965_hw_ops = {
4093 .tx = iwl4965_mac_tx,
4094 .start = iwl4965_mac_start,
4095 .stop = iwl4965_mac_stop,
4096 .add_interface = iwl4965_mac_add_interface,
4097 .remove_interface = iwl4965_mac_remove_interface,
4098 .config = iwl4965_mac_config,
4099 .config_interface = iwl4965_mac_config_interface,
4100 .configure_filter = iwl4965_configure_filter,
4101 .set_key = iwl4965_mac_set_key,
4102 .update_tkip_key = iwl4965_mac_update_tkip_key,
4103 .get_stats = iwl4965_mac_get_stats,
4104 .get_tx_stats = iwl4965_mac_get_tx_stats,
4105 .conf_tx = iwl4965_mac_conf_tx,
4106 .get_tsf = iwl4965_mac_get_tsf,
4107 .reset_tsf = iwl4965_mac_reset_tsf,
4108 .beacon_update = iwl4965_mac_beacon_update,
4109 .bss_info_changed = iwl4965_bss_info_changed,
4110 .ampdu_action = iwl4965_mac_ampdu_action,
4111 .hw_scan = iwl4965_mac_hw_scan
4112 };
4113
4114 static int iwl4965_pci_probe(struct pci_dev *pdev, const struct pci_device_id *ent)
4115 {
4116 int err = 0;
4117 struct iwl_priv *priv;
4118 struct ieee80211_hw *hw;
4119 struct iwl_cfg *cfg = (struct iwl_cfg *)(ent->driver_data);
4120 unsigned long flags;
4121 DECLARE_MAC_BUF(mac);
4122
4123 /************************
4124 * 1. Allocating HW data
4125 ************************/
4126
4127 /* Disabling hardware scan means that mac80211 will perform scans
4128 * "the hard way", rather than using device's scan. */
4129 if (cfg->mod_params->disable_hw_scan) {
4130 if (cfg->mod_params->debug & IWL_DL_INFO)
4131 dev_printk(KERN_DEBUG, &(pdev->dev),
4132 "Disabling hw_scan\n");
4133 iwl4965_hw_ops.hw_scan = NULL;
4134 }
4135
4136 hw = iwl_alloc_all(cfg, &iwl4965_hw_ops);
4137 if (!hw) {
4138 err = -ENOMEM;
4139 goto out;
4140 }
4141 priv = hw->priv;
4142 /* At this point both hw and priv are allocated. */
4143
4144 SET_IEEE80211_DEV(hw, &pdev->dev);
4145
4146 IWL_DEBUG_INFO("*** LOAD DRIVER ***\n");
4147 priv->cfg = cfg;
4148 priv->pci_dev = pdev;
4149
4150 #ifdef CONFIG_IWLWIFI_DEBUG
4151 priv->debug_level = priv->cfg->mod_params->debug;
4152 atomic_set(&priv->restrict_refcnt, 0);
4153 #endif
4154
4155 /**************************
4156 * 2. Initializing PCI bus
4157 **************************/
4158 if (pci_enable_device(pdev)) {
4159 err = -ENODEV;
4160 goto out_ieee80211_free_hw;
4161 }
4162
4163 pci_set_master(pdev);
4164
4165 err = pci_set_dma_mask(pdev, DMA_64BIT_MASK);
4166 if (!err)
4167 err = pci_set_consistent_dma_mask(pdev, DMA_64BIT_MASK);
4168 if (err) {
4169 err = pci_set_dma_mask(pdev, DMA_32BIT_MASK);
4170 if (!err)
4171 err = pci_set_consistent_dma_mask(pdev, DMA_32BIT_MASK);
4172 /* both attempts failed: */
4173 if (err) {
4174 printk(KERN_WARNING "%s: No suitable DMA available.\n",
4175 DRV_NAME);
4176 goto out_pci_disable_device;
4177 }
4178 }
4179
4180 err = pci_request_regions(pdev, DRV_NAME);
4181 if (err)
4182 goto out_pci_disable_device;
4183
4184 pci_set_drvdata(pdev, priv);
4185
4186 /* We disable the RETRY_TIMEOUT register (0x41) to keep
4187 * PCI Tx retries from interfering with C3 CPU state */
4188 pci_write_config_byte(pdev, 0x41, 0x00);
4189
4190 /***********************
4191 * 3. Read REV register
4192 ***********************/
4193 priv->hw_base = pci_iomap(pdev, 0, 0);
4194 if (!priv->hw_base) {
4195 err = -ENODEV;
4196 goto out_pci_release_regions;
4197 }
4198
4199 IWL_DEBUG_INFO("pci_resource_len = 0x%08llx\n",
4200 (unsigned long long) pci_resource_len(pdev, 0));
4201 IWL_DEBUG_INFO("pci_resource_base = %p\n", priv->hw_base);
4202
4203 iwl_hw_detect(priv);
4204 printk(KERN_INFO DRV_NAME
4205 ": Detected Intel Wireless WiFi Link %s REV=0x%X\n",
4206 priv->cfg->name, priv->hw_rev);
4207
4208 /* amp init */
4209 err = priv->cfg->ops->lib->apm_ops.init(priv);
4210 if (err < 0) {
4211 IWL_DEBUG_INFO("Failed to init APMG\n");
4212 goto out_iounmap;
4213 }
4214 /*****************
4215 * 4. Read EEPROM
4216 *****************/
4217 /* Read the EEPROM */
4218 err = iwl_eeprom_init(priv);
4219 if (err) {
4220 IWL_ERROR("Unable to init EEPROM\n");
4221 goto out_iounmap;
4222 }
4223 err = iwl_eeprom_check_version(priv);
4224 if (err)
4225 goto out_iounmap;
4226
4227 /* extract MAC Address */
4228 iwl_eeprom_get_mac(priv, priv->mac_addr);
4229 IWL_DEBUG_INFO("MAC address: %s\n", print_mac(mac, priv->mac_addr));
4230 SET_IEEE80211_PERM_ADDR(priv->hw, priv->mac_addr);
4231
4232 /************************
4233 * 5. Setup HW constants
4234 ************************/
4235 /* Device-specific setup */
4236 if (priv->cfg->ops->lib->set_hw_params(priv)) {
4237 IWL_ERROR("failed to set hw parameters\n");
4238 goto out_free_eeprom;
4239 }
4240
4241 /*******************
4242 * 6. Setup priv
4243 *******************/
4244
4245 err = iwl_init_drv(priv);
4246 if (err)
4247 goto out_free_eeprom;
4248 /* At this point both hw and priv are initialized. */
4249
4250 /**********************************
4251 * 7. Initialize module parameters
4252 **********************************/
4253
4254 /* Disable radio (SW RF KILL) via parameter when loading driver */
4255 if (priv->cfg->mod_params->disable) {
4256 set_bit(STATUS_RF_KILL_SW, &priv->status);
4257 IWL_DEBUG_INFO("Radio disabled.\n");
4258 }
4259
4260 /********************
4261 * 8. Setup services
4262 ********************/
4263 spin_lock_irqsave(&priv->lock, flags);
4264 iwl4965_disable_interrupts(priv);
4265 spin_unlock_irqrestore(&priv->lock, flags);
4266
4267 err = sysfs_create_group(&pdev->dev.kobj, &iwl4965_attribute_group);
4268 if (err) {
4269 IWL_ERROR("failed to create sysfs device attributes\n");
4270 goto out_uninit_drv;
4271 }
4272
4273
4274 iwl_setup_deferred_work(priv);
4275 iwl4965_setup_rx_handlers(priv);
4276
4277 /********************
4278 * 9. Conclude
4279 ********************/
4280 pci_save_state(pdev);
4281 pci_disable_device(pdev);
4282
4283 /**********************************
4284 * 10. Setup and register mac80211
4285 **********************************/
4286
4287 err = iwl_setup_mac(priv);
4288 if (err)
4289 goto out_remove_sysfs;
4290
4291 err = iwl_dbgfs_register(priv, DRV_NAME);
4292 if (err)
4293 IWL_ERROR("failed to create debugfs files\n");
4294
4295 err = iwl_rfkill_init(priv);
4296 if (err)
4297 IWL_ERROR("Unable to initialize RFKILL system. "
4298 "Ignoring error: %d\n", err);
4299 iwl_power_initialize(priv);
4300 return 0;
4301
4302 out_remove_sysfs:
4303 sysfs_remove_group(&pdev->dev.kobj, &iwl4965_attribute_group);
4304 out_uninit_drv:
4305 iwl_uninit_drv(priv);
4306 out_free_eeprom:
4307 iwl_eeprom_free(priv);
4308 out_iounmap:
4309 pci_iounmap(pdev, priv->hw_base);
4310 out_pci_release_regions:
4311 pci_release_regions(pdev);
4312 pci_set_drvdata(pdev, NULL);
4313 out_pci_disable_device:
4314 pci_disable_device(pdev);
4315 out_ieee80211_free_hw:
4316 ieee80211_free_hw(priv->hw);
4317 out:
4318 return err;
4319 }
4320
4321 static void __devexit iwl4965_pci_remove(struct pci_dev *pdev)
4322 {
4323 struct iwl_priv *priv = pci_get_drvdata(pdev);
4324 unsigned long flags;
4325
4326 if (!priv)
4327 return;
4328
4329 IWL_DEBUG_INFO("*** UNLOAD DRIVER ***\n");
4330
4331 iwl_dbgfs_unregister(priv);
4332 sysfs_remove_group(&pdev->dev.kobj, &iwl4965_attribute_group);
4333
4334 if (priv->mac80211_registered) {
4335 ieee80211_unregister_hw(priv->hw);
4336 priv->mac80211_registered = 0;
4337 }
4338
4339 set_bit(STATUS_EXIT_PENDING, &priv->status);
4340
4341 iwl4965_down(priv);
4342
4343 /* make sure we flush any pending irq or
4344 * tasklet for the driver
4345 */
4346 spin_lock_irqsave(&priv->lock, flags);
4347 iwl4965_disable_interrupts(priv);
4348 spin_unlock_irqrestore(&priv->lock, flags);
4349
4350 iwl_synchronize_irq(priv);
4351
4352 iwl_rfkill_unregister(priv);
4353 iwl4965_dealloc_ucode_pci(priv);
4354
4355 if (priv->rxq.bd)
4356 iwl_rx_queue_free(priv, &priv->rxq);
4357 iwl_hw_txq_ctx_free(priv);
4358
4359 iwl_clear_stations_table(priv);
4360 iwl_eeprom_free(priv);
4361
4362
4363 /*netif_stop_queue(dev); */
4364 flush_workqueue(priv->workqueue);
4365
4366 /* ieee80211_unregister_hw calls iwl4965_mac_stop, which flushes
4367 * priv->workqueue... so we can't take down the workqueue
4368 * until now... */
4369 destroy_workqueue(priv->workqueue);
4370 priv->workqueue = NULL;
4371
4372 pci_iounmap(pdev, priv->hw_base);
4373 pci_release_regions(pdev);
4374 pci_disable_device(pdev);
4375 pci_set_drvdata(pdev, NULL);
4376
4377 iwl_uninit_drv(priv);
4378
4379 if (priv->ibss_beacon)
4380 dev_kfree_skb(priv->ibss_beacon);
4381
4382 ieee80211_free_hw(priv->hw);
4383 }
4384
4385 #ifdef CONFIG_PM
4386
4387 static int iwl4965_pci_suspend(struct pci_dev *pdev, pm_message_t state)
4388 {
4389 struct iwl_priv *priv = pci_get_drvdata(pdev);
4390
4391 if (priv->is_open) {
4392 set_bit(STATUS_IN_SUSPEND, &priv->status);
4393 iwl4965_mac_stop(priv->hw);
4394 priv->is_open = 1;
4395 }
4396
4397 pci_set_power_state(pdev, PCI_D3hot);
4398
4399 return 0;
4400 }
4401
4402 static int iwl4965_pci_resume(struct pci_dev *pdev)
4403 {
4404 struct iwl_priv *priv = pci_get_drvdata(pdev);
4405
4406 pci_set_power_state(pdev, PCI_D0);
4407
4408 if (priv->is_open)
4409 iwl4965_mac_start(priv->hw);
4410
4411 clear_bit(STATUS_IN_SUSPEND, &priv->status);
4412 return 0;
4413 }
4414
4415 #endif /* CONFIG_PM */
4416
4417 /*****************************************************************************
4418 *
4419 * driver and module entry point
4420 *
4421 *****************************************************************************/
4422
4423 /* Hardware specific file defines the PCI IDs table for that hardware module */
4424 static struct pci_device_id iwl_hw_card_ids[] = {
4425 {IWL_PCI_DEVICE(0x4229, PCI_ANY_ID, iwl4965_agn_cfg)},
4426 {IWL_PCI_DEVICE(0x4230, PCI_ANY_ID, iwl4965_agn_cfg)},
4427 #ifdef CONFIG_IWL5000
4428 {IWL_PCI_DEVICE(0x4235, PCI_ANY_ID, iwl5300_agn_cfg)},
4429 {IWL_PCI_DEVICE(0x4232, PCI_ANY_ID, iwl5100_agn_cfg)},
4430 {IWL_PCI_DEVICE(0x423A, PCI_ANY_ID, iwl5350_agn_cfg)},
4431 #endif /* CONFIG_IWL5000 */
4432 {0}
4433 };
4434 MODULE_DEVICE_TABLE(pci, iwl_hw_card_ids);
4435
4436 static struct pci_driver iwl_driver = {
4437 .name = DRV_NAME,
4438 .id_table = iwl_hw_card_ids,
4439 .probe = iwl4965_pci_probe,
4440 .remove = __devexit_p(iwl4965_pci_remove),
4441 #ifdef CONFIG_PM
4442 .suspend = iwl4965_pci_suspend,
4443 .resume = iwl4965_pci_resume,
4444 #endif
4445 };
4446
4447 static int __init iwl4965_init(void)
4448 {
4449
4450 int ret;
4451 printk(KERN_INFO DRV_NAME ": " DRV_DESCRIPTION ", " DRV_VERSION "\n");
4452 printk(KERN_INFO DRV_NAME ": " DRV_COPYRIGHT "\n");
4453
4454 ret = iwl4965_rate_control_register();
4455 if (ret) {
4456 IWL_ERROR("Unable to register rate control algorithm: %d\n", ret);
4457 return ret;
4458 }
4459
4460 ret = pci_register_driver(&iwl_driver);
4461 if (ret) {
4462 IWL_ERROR("Unable to initialize PCI module\n");
4463 goto error_register;
4464 }
4465
4466 return ret;
4467
4468 error_register:
4469 iwl4965_rate_control_unregister();
4470 return ret;
4471 }
4472
4473 static void __exit iwl4965_exit(void)
4474 {
4475 pci_unregister_driver(&iwl_driver);
4476 iwl4965_rate_control_unregister();
4477 }
4478
4479 module_exit(iwl4965_exit);
4480 module_init(iwl4965_init);
Linux 2.6 ibm-acpi/thinkpad-acpi driver git tree