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iwlwifi: remove post associate work
[linux-2.6/linux-acpi-2.6/ibm-acpi-2.6.git] / drivers / net / wireless / iwlwifi / iwl4965-base.c
blobfbb854e31bdb139c0742bb8d2a8b6017920f8015
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 /* allow CTS-to-self if possible. this is relevant only for
254 * 5000, but will not damage 4965 */
255 priv->staging_rxon.flags |= RXON_FLG_SELF_CTS_EN;
256
257 ret = iwl4965_check_rxon_cmd(&priv->staging_rxon);
258 if (ret) {
259 IWL_ERROR("Invalid RXON configuration. Not committing.\n");
260 return -EINVAL;
261 }
262
263 /* If we don't need to send a full RXON, we can use
264 * iwl4965_rxon_assoc_cmd which is used to reconfigure filter
265 * and other flags for the current radio configuration. */
266 if (!iwl4965_full_rxon_required(priv)) {
267 ret = iwl_send_rxon_assoc(priv);
268 if (ret) {
269 IWL_ERROR("Error setting RXON_ASSOC (%d)\n", ret);
270 return ret;
271 }
272
273 memcpy(active_rxon, &priv->staging_rxon, sizeof(*active_rxon));
274 return 0;
275 }
276
277 /* station table will be cleared */
278 priv->assoc_station_added = 0;
279
280 /* If we are currently associated and the new config requires
281 * an RXON_ASSOC and the new config wants the associated mask enabled,
282 * we must clear the associated from the active configuration
283 * before we apply the new config */
284 if (iwl_is_associated(priv) && new_assoc) {
285 IWL_DEBUG_INFO("Toggling associated bit on current RXON\n");
286 active_rxon->filter_flags &= ~RXON_FILTER_ASSOC_MSK;
287
288 ret = iwl_send_cmd_pdu(priv, REPLY_RXON,
289 sizeof(struct iwl_rxon_cmd),
290 &priv->active_rxon);
291
292 /* If the mask clearing failed then we set
293 * active_rxon back to what it was previously */
294 if (ret) {
295 active_rxon->filter_flags |= RXON_FILTER_ASSOC_MSK;
296 IWL_ERROR("Error clearing ASSOC_MSK (%d)\n", ret);
297 return ret;
298 }
299 }
300
301 IWL_DEBUG_INFO("Sending RXON\n"
302 "* with%s RXON_FILTER_ASSOC_MSK\n"
303 "* channel = %d\n"
304 "* bssid = %s\n",
305 (new_assoc ? "" : "out"),
306 le16_to_cpu(priv->staging_rxon.channel),
307 print_mac(mac, priv->staging_rxon.bssid_addr));
308
309 iwl4965_set_rxon_hwcrypto(priv, !priv->hw_params.sw_crypto);
310
311 /* Apply the new configuration
312 * RXON unassoc clears the station table in uCode, send it before
313 * we add the bcast station. If assoc bit is set, we will send RXON
314 * after having added the bcast and bssid station.
315 */
316 if (!new_assoc) {
317 ret = iwl_send_cmd_pdu(priv, REPLY_RXON,
318 sizeof(struct iwl_rxon_cmd), &priv->staging_rxon);
319 if (ret) {
320 IWL_ERROR("Error setting new RXON (%d)\n", ret);
321 return ret;
322 }
323 memcpy(active_rxon, &priv->staging_rxon, sizeof(*active_rxon));
324 }
325
326 iwl_clear_stations_table(priv);
327
328 if (!priv->error_recovering)
329 priv->start_calib = 0;
330
331 iwl_init_sensitivity(priv);
332
333 /* If we issue a new RXON command which required a tune then we must
334 * send a new TXPOWER command or we won't be able to Tx any frames */
335 ret = iwl_set_tx_power(priv, priv->tx_power_user_lmt, true);
336 if (ret) {
337 IWL_ERROR("Error sending TX power (%d)\n", ret);
338 return ret;
339 }
340
341 /* Add the broadcast address so we can send broadcast frames */
342 if (iwl_rxon_add_station(priv, iwl_bcast_addr, 0) ==
343 IWL_INVALID_STATION) {
344 IWL_ERROR("Error adding BROADCAST address for transmit.\n");
345 return -EIO;
346 }
347
348 /* If we have set the ASSOC_MSK and we are in BSS mode then
349 * add the IWL_AP_ID to the station rate table */
350 if (new_assoc) {
351 if (priv->iw_mode == IEEE80211_IF_TYPE_STA) {
352 ret = iwl_rxon_add_station(priv,
353 priv->active_rxon.bssid_addr, 1);
354 if (ret == IWL_INVALID_STATION) {
355 IWL_ERROR("Error adding AP address for TX.\n");
356 return -EIO;
357 }
358 priv->assoc_station_added = 1;
359 if (priv->default_wep_key &&
360 iwl_send_static_wepkey_cmd(priv, 0))
361 IWL_ERROR("Could not send WEP static key.\n");
362 }
363
364 /* Apply the new configuration
365 * RXON assoc doesn't clear the station table in uCode,
366 */
367 ret = iwl_send_cmd_pdu(priv, REPLY_RXON,
368 sizeof(struct iwl_rxon_cmd), &priv->staging_rxon);
369 if (ret) {
370 IWL_ERROR("Error setting new RXON (%d)\n", ret);
371 return ret;
372 }
373 memcpy(active_rxon, &priv->staging_rxon, sizeof(*active_rxon));
374 }
375
376 return 0;
377 }
378
379 void iwl4965_update_chain_flags(struct iwl_priv *priv)
380 {
381
382 iwl_set_rxon_chain(priv);
383 iwl4965_commit_rxon(priv);
384 }
385
386 static int iwl4965_send_bt_config(struct iwl_priv *priv)
387 {
388 struct iwl4965_bt_cmd bt_cmd = {
389 .flags = 3,
390 .lead_time = 0xAA,
391 .max_kill = 1,
392 .kill_ack_mask = 0,
393 .kill_cts_mask = 0,
394 };
395
396 return iwl_send_cmd_pdu(priv, REPLY_BT_CONFIG,
397 sizeof(struct iwl4965_bt_cmd), &bt_cmd);
398 }
399
400 static void iwl_clear_free_frames(struct iwl_priv *priv)
401 {
402 struct list_head *element;
403
404 IWL_DEBUG_INFO("%d frames on pre-allocated heap on clear.\n",
405 priv->frames_count);
406
407 while (!list_empty(&priv->free_frames)) {
408 element = priv->free_frames.next;
409 list_del(element);
410 kfree(list_entry(element, struct iwl_frame, list));
411 priv->frames_count--;
412 }
413
414 if (priv->frames_count) {
415 IWL_WARNING("%d frames still in use. Did we lose one?\n",
416 priv->frames_count);
417 priv->frames_count = 0;
418 }
419 }
420
421 static struct iwl_frame *iwl_get_free_frame(struct iwl_priv *priv)
422 {
423 struct iwl_frame *frame;
424 struct list_head *element;
425 if (list_empty(&priv->free_frames)) {
426 frame = kzalloc(sizeof(*frame), GFP_KERNEL);
427 if (!frame) {
428 IWL_ERROR("Could not allocate frame!\n");
429 return NULL;
430 }
431
432 priv->frames_count++;
433 return frame;
434 }
435
436 element = priv->free_frames.next;
437 list_del(element);
438 return list_entry(element, struct iwl_frame, list);
439 }
440
441 static void iwl_free_frame(struct iwl_priv *priv, struct iwl_frame *frame)
442 {
443 memset(frame, 0, sizeof(*frame));
444 list_add(&frame->list, &priv->free_frames);
445 }
446
447 unsigned int iwl4965_fill_beacon_frame(struct iwl_priv *priv,
448 struct ieee80211_hdr *hdr,
449 const u8 *dest, int left)
450 {
451
452 if (!iwl_is_associated(priv) || !priv->ibss_beacon ||
453 ((priv->iw_mode != IEEE80211_IF_TYPE_IBSS) &&
454 (priv->iw_mode != IEEE80211_IF_TYPE_AP)))
455 return 0;
456
457 if (priv->ibss_beacon->len > left)
458 return 0;
459
460 memcpy(hdr, priv->ibss_beacon->data, priv->ibss_beacon->len);
461
462 return priv->ibss_beacon->len;
463 }
464
465 static u8 iwl4965_rate_get_lowest_plcp(struct iwl_priv *priv)
466 {
467 int i;
468 int rate_mask;
469
470 /* Set rate mask*/
471 if (priv->staging_rxon.flags & RXON_FLG_BAND_24G_MSK)
472 rate_mask = priv->active_rate_basic & 0xF;
473 else
474 rate_mask = priv->active_rate_basic & 0xFF0;
475
476 /* Find lowest valid rate */
477 for (i = IWL_RATE_1M_INDEX; i != IWL_RATE_INVALID;
478 i = iwl_rates[i].next_ieee) {
479 if (rate_mask & (1 << i))
480 return iwl_rates[i].plcp;
481 }
482
483 /* No valid rate was found. Assign the lowest one */
484 if (priv->staging_rxon.flags & RXON_FLG_BAND_24G_MSK)
485 return IWL_RATE_1M_PLCP;
486 else
487 return IWL_RATE_6M_PLCP;
488 }
489
490 static int iwl4965_send_beacon_cmd(struct iwl_priv *priv)
491 {
492 struct iwl_frame *frame;
493 unsigned int frame_size;
494 int rc;
495 u8 rate;
496
497 frame = iwl_get_free_frame(priv);
498
499 if (!frame) {
500 IWL_ERROR("Could not obtain free frame buffer for beacon "
501 "command.\n");
502 return -ENOMEM;
503 }
504
505 rate = iwl4965_rate_get_lowest_plcp(priv);
506
507 frame_size = iwl4965_hw_get_beacon_cmd(priv, frame, rate);
508
509 rc = iwl_send_cmd_pdu(priv, REPLY_TX_BEACON, frame_size,
510 &frame->u.cmd[0]);
511
512 iwl_free_frame(priv, frame);
513
514 return rc;
515 }
516
517 /******************************************************************************
518 *
519 * Misc. internal state and helper functions
520 *
521 ******************************************************************************/
522
523 static void iwl4965_ht_conf(struct iwl_priv *priv,
524 struct ieee80211_bss_conf *bss_conf)
525 {
526 struct ieee80211_ht_info *ht_conf = bss_conf->ht_conf;
527 struct ieee80211_ht_bss_info *ht_bss_conf = bss_conf->ht_bss_conf;
528 struct iwl_ht_info *iwl_conf = &priv->current_ht_config;
529
530 IWL_DEBUG_MAC80211("enter: \n");
531
532 iwl_conf->is_ht = bss_conf->assoc_ht;
533
534 if (!iwl_conf->is_ht)
535 return;
536
537 priv->ps_mode = (u8)((ht_conf->cap & IEEE80211_HT_CAP_MIMO_PS) >> 2);
538
539 if (ht_conf->cap & IEEE80211_HT_CAP_SGI_20)
540 iwl_conf->sgf |= HT_SHORT_GI_20MHZ;
541 if (ht_conf->cap & IEEE80211_HT_CAP_SGI_40)
542 iwl_conf->sgf |= HT_SHORT_GI_40MHZ;
543
544 iwl_conf->is_green_field = !!(ht_conf->cap & IEEE80211_HT_CAP_GRN_FLD);
545 iwl_conf->max_amsdu_size =
546 !!(ht_conf->cap & IEEE80211_HT_CAP_MAX_AMSDU);
547
548 iwl_conf->supported_chan_width =
549 !!(ht_conf->cap & IEEE80211_HT_CAP_SUP_WIDTH);
550 iwl_conf->extension_chan_offset =
551 ht_bss_conf->bss_cap & IEEE80211_HT_IE_CHA_SEC_OFFSET;
552 /* If no above or below channel supplied disable FAT channel */
553 if (iwl_conf->extension_chan_offset != IEEE80211_HT_IE_CHA_SEC_ABOVE &&
554 iwl_conf->extension_chan_offset != IEEE80211_HT_IE_CHA_SEC_BELOW) {
555 iwl_conf->extension_chan_offset = IEEE80211_HT_IE_CHA_SEC_NONE;
556 iwl_conf->supported_chan_width = 0;
557 }
558
559 iwl_conf->tx_mimo_ps_mode =
560 (u8)((ht_conf->cap & IEEE80211_HT_CAP_MIMO_PS) >> 2);
561 memcpy(iwl_conf->supp_mcs_set, ht_conf->supp_mcs_set, 16);
562
563 iwl_conf->control_channel = ht_bss_conf->primary_channel;
564 iwl_conf->tx_chan_width =
565 !!(ht_bss_conf->bss_cap & IEEE80211_HT_IE_CHA_WIDTH);
566 iwl_conf->ht_protection =
567 ht_bss_conf->bss_op_mode & IEEE80211_HT_IE_HT_PROTECTION;
568 iwl_conf->non_GF_STA_present =
569 !!(ht_bss_conf->bss_op_mode & IEEE80211_HT_IE_NON_GF_STA_PRSNT);
570
571 IWL_DEBUG_MAC80211("control channel %d\n", iwl_conf->control_channel);
572 IWL_DEBUG_MAC80211("leave\n");
573 }
574
575 /*
576 * QoS support
577 */
578 static int iwl4965_send_qos_params_command(struct iwl_priv *priv,
579 struct iwl4965_qosparam_cmd *qos)
580 {
581
582 return iwl_send_cmd_pdu(priv, REPLY_QOS_PARAM,
583 sizeof(struct iwl4965_qosparam_cmd), qos);
584 }
585
586 static void iwl4965_activate_qos(struct iwl_priv *priv, u8 force)
587 {
588 unsigned long flags;
589
590 if (test_bit(STATUS_EXIT_PENDING, &priv->status))
591 return;
592
593 if (!priv->qos_data.qos_enable)
594 return;
595
596 spin_lock_irqsave(&priv->lock, flags);
597 priv->qos_data.def_qos_parm.qos_flags = 0;
598
599 if (priv->qos_data.qos_cap.q_AP.queue_request &&
600 !priv->qos_data.qos_cap.q_AP.txop_request)
601 priv->qos_data.def_qos_parm.qos_flags |=
602 QOS_PARAM_FLG_TXOP_TYPE_MSK;
603 if (priv->qos_data.qos_active)
604 priv->qos_data.def_qos_parm.qos_flags |=
605 QOS_PARAM_FLG_UPDATE_EDCA_MSK;
606
607 if (priv->current_ht_config.is_ht)
608 priv->qos_data.def_qos_parm.qos_flags |= QOS_PARAM_FLG_TGN_MSK;
609
610 spin_unlock_irqrestore(&priv->lock, flags);
611
612 if (force || iwl_is_associated(priv)) {
613 IWL_DEBUG_QOS("send QoS cmd with Qos active=%d FLAGS=0x%X\n",
614 priv->qos_data.qos_active,
615 priv->qos_data.def_qos_parm.qos_flags);
616
617 iwl4965_send_qos_params_command(priv,
618 &(priv->qos_data.def_qos_parm));
619 }
620 }
621
622 #define MAX_UCODE_BEACON_INTERVAL 4096
623 #define INTEL_CONN_LISTEN_INTERVAL __constant_cpu_to_le16(0xA)
624
625 static __le16 iwl4965_adjust_beacon_interval(u16 beacon_val)
626 {
627 u16 new_val = 0;
628 u16 beacon_factor = 0;
629
630 beacon_factor =
631 (beacon_val + MAX_UCODE_BEACON_INTERVAL)
632 / MAX_UCODE_BEACON_INTERVAL;
633 new_val = beacon_val / beacon_factor;
634
635 return cpu_to_le16(new_val);
636 }
637
638 static void iwl4965_setup_rxon_timing(struct iwl_priv *priv)
639 {
640 u64 interval_tm_unit;
641 u64 tsf, result;
642 unsigned long flags;
643 struct ieee80211_conf *conf = NULL;
644 u16 beacon_int = 0;
645
646 conf = ieee80211_get_hw_conf(priv->hw);
647
648 spin_lock_irqsave(&priv->lock, flags);
649 priv->rxon_timing.timestamp.dw[1] = cpu_to_le32(priv->timestamp >> 32);
650 priv->rxon_timing.timestamp.dw[0] =
651 cpu_to_le32(priv->timestamp & 0xFFFFFFFF);
652
653 priv->rxon_timing.listen_interval = INTEL_CONN_LISTEN_INTERVAL;
654
655 tsf = priv->timestamp;
656
657 beacon_int = priv->beacon_int;
658 spin_unlock_irqrestore(&priv->lock, flags);
659
660 if (priv->iw_mode == IEEE80211_IF_TYPE_STA) {
661 if (beacon_int == 0) {
662 priv->rxon_timing.beacon_interval = cpu_to_le16(100);
663 priv->rxon_timing.beacon_init_val = cpu_to_le32(102400);
664 } else {
665 priv->rxon_timing.beacon_interval =
666 cpu_to_le16(beacon_int);
667 priv->rxon_timing.beacon_interval =
668 iwl4965_adjust_beacon_interval(
669 le16_to_cpu(priv->rxon_timing.beacon_interval));
670 }
671
672 priv->rxon_timing.atim_window = 0;
673 } else {
674 priv->rxon_timing.beacon_interval =
675 iwl4965_adjust_beacon_interval(conf->beacon_int);
676 /* TODO: we need to get atim_window from upper stack
677 * for now we set to 0 */
678 priv->rxon_timing.atim_window = 0;
679 }
680
681 interval_tm_unit =
682 (le16_to_cpu(priv->rxon_timing.beacon_interval) * 1024);
683 result = do_div(tsf, interval_tm_unit);
684 priv->rxon_timing.beacon_init_val =
685 cpu_to_le32((u32) ((u64) interval_tm_unit - result));
686
687 IWL_DEBUG_ASSOC
688 ("beacon interval %d beacon timer %d beacon tim %d\n",
689 le16_to_cpu(priv->rxon_timing.beacon_interval),
690 le32_to_cpu(priv->rxon_timing.beacon_init_val),
691 le16_to_cpu(priv->rxon_timing.atim_window));
692 }
693
694 static void iwl_set_flags_for_band(struct iwl_priv *priv,
695 enum ieee80211_band band)
696 {
697 if (band == IEEE80211_BAND_5GHZ) {
698 priv->staging_rxon.flags &=
699 ~(RXON_FLG_BAND_24G_MSK | RXON_FLG_AUTO_DETECT_MSK
700 | RXON_FLG_CCK_MSK);
701 priv->staging_rxon.flags |= RXON_FLG_SHORT_SLOT_MSK;
702 } else {
703 /* Copied from iwl4965_post_associate() */
704 if (priv->assoc_capability & WLAN_CAPABILITY_SHORT_SLOT_TIME)
705 priv->staging_rxon.flags |= RXON_FLG_SHORT_SLOT_MSK;
706 else
707 priv->staging_rxon.flags &= ~RXON_FLG_SHORT_SLOT_MSK;
708
709 if (priv->iw_mode == IEEE80211_IF_TYPE_IBSS)
710 priv->staging_rxon.flags &= ~RXON_FLG_SHORT_SLOT_MSK;
711
712 priv->staging_rxon.flags |= RXON_FLG_BAND_24G_MSK;
713 priv->staging_rxon.flags |= RXON_FLG_AUTO_DETECT_MSK;
714 priv->staging_rxon.flags &= ~RXON_FLG_CCK_MSK;
715 }
716 }
717
718 /*
719 * initialize rxon structure with default values from eeprom
720 */
721 static void iwl4965_connection_init_rx_config(struct iwl_priv *priv)
722 {
723 const struct iwl_channel_info *ch_info;
724
725 memset(&priv->staging_rxon, 0, sizeof(priv->staging_rxon));
726
727 switch (priv->iw_mode) {
728 case IEEE80211_IF_TYPE_AP:
729 priv->staging_rxon.dev_type = RXON_DEV_TYPE_AP;
730 break;
731
732 case IEEE80211_IF_TYPE_STA:
733 priv->staging_rxon.dev_type = RXON_DEV_TYPE_ESS;
734 priv->staging_rxon.filter_flags = RXON_FILTER_ACCEPT_GRP_MSK;
735 break;
736
737 case IEEE80211_IF_TYPE_IBSS:
738 priv->staging_rxon.dev_type = RXON_DEV_TYPE_IBSS;
739 priv->staging_rxon.flags = RXON_FLG_SHORT_PREAMBLE_MSK;
740 priv->staging_rxon.filter_flags = RXON_FILTER_BCON_AWARE_MSK |
741 RXON_FILTER_ACCEPT_GRP_MSK;
742 break;
743
744 case IEEE80211_IF_TYPE_MNTR:
745 priv->staging_rxon.dev_type = RXON_DEV_TYPE_SNIFFER;
746 priv->staging_rxon.filter_flags = RXON_FILTER_PROMISC_MSK |
747 RXON_FILTER_CTL2HOST_MSK | RXON_FILTER_ACCEPT_GRP_MSK;
748 break;
749 default:
750 IWL_ERROR("Unsupported interface type %d\n", priv->iw_mode);
751 break;
752 }
753
754 #if 0
755 /* TODO: Figure out when short_preamble would be set and cache from
756 * that */
757 if (!hw_to_local(priv->hw)->short_preamble)
758 priv->staging_rxon.flags &= ~RXON_FLG_SHORT_PREAMBLE_MSK;
759 else
760 priv->staging_rxon.flags |= RXON_FLG_SHORT_PREAMBLE_MSK;
761 #endif
762
763 ch_info = iwl_get_channel_info(priv, priv->band,
764 le16_to_cpu(priv->active_rxon.channel));
765
766 if (!ch_info)
767 ch_info = &priv->channel_info[0];
768
769 /*
770 * in some case A channels are all non IBSS
771 * in this case force B/G channel
772 */
773 if ((priv->iw_mode == IEEE80211_IF_TYPE_IBSS) &&
774 !(is_channel_ibss(ch_info)))
775 ch_info = &priv->channel_info[0];
776
777 priv->staging_rxon.channel = cpu_to_le16(ch_info->channel);
778 priv->band = ch_info->band;
779
780 iwl_set_flags_for_band(priv, priv->band);
781
782 priv->staging_rxon.ofdm_basic_rates =
783 (IWL_OFDM_RATES_MASK >> IWL_FIRST_OFDM_RATE) & 0xFF;
784 priv->staging_rxon.cck_basic_rates =
785 (IWL_CCK_RATES_MASK >> IWL_FIRST_CCK_RATE) & 0xF;
786
787 priv->staging_rxon.flags &= ~(RXON_FLG_CHANNEL_MODE_MIXED_MSK |
788 RXON_FLG_CHANNEL_MODE_PURE_40_MSK);
789 memcpy(priv->staging_rxon.node_addr, priv->mac_addr, ETH_ALEN);
790 memcpy(priv->staging_rxon.wlap_bssid_addr, priv->mac_addr, ETH_ALEN);
791 priv->staging_rxon.ofdm_ht_single_stream_basic_rates = 0xff;
792 priv->staging_rxon.ofdm_ht_dual_stream_basic_rates = 0xff;
793 iwl_set_rxon_chain(priv);
794 }
795
796 static int iwl4965_set_mode(struct iwl_priv *priv, int mode)
797 {
798 priv->iw_mode = mode;
799
800 iwl4965_connection_init_rx_config(priv);
801 memcpy(priv->staging_rxon.node_addr, priv->mac_addr, ETH_ALEN);
802
803 iwl_clear_stations_table(priv);
804
805 /* dont commit rxon if rf-kill is on*/
806 if (!iwl_is_ready_rf(priv))
807 return -EAGAIN;
808
809 cancel_delayed_work(&priv->scan_check);
810 if (iwl_scan_cancel_timeout(priv, 100)) {
811 IWL_WARNING("Aborted scan still in progress after 100ms\n");
812 IWL_DEBUG_MAC80211("leaving - scan abort failed.\n");
813 return -EAGAIN;
814 }
815
816 iwl4965_commit_rxon(priv);
817
818 return 0;
819 }
820
821 static void iwl4965_set_rate(struct iwl_priv *priv)
822 {
823 const struct ieee80211_supported_band *hw = NULL;
824 struct ieee80211_rate *rate;
825 int i;
826
827 hw = iwl_get_hw_mode(priv, priv->band);
828 if (!hw) {
829 IWL_ERROR("Failed to set rate: unable to get hw mode\n");
830 return;
831 }
832
833 priv->active_rate = 0;
834 priv->active_rate_basic = 0;
835
836 for (i = 0; i < hw->n_bitrates; i++) {
837 rate = &(hw->bitrates[i]);
838 if (rate->hw_value < IWL_RATE_COUNT)
839 priv->active_rate |= (1 << rate->hw_value);
840 }
841
842 IWL_DEBUG_RATE("Set active_rate = %0x, active_rate_basic = %0x\n",
843 priv->active_rate, priv->active_rate_basic);
844
845 /*
846 * If a basic rate is configured, then use it (adding IWL_RATE_1M_MASK)
847 * otherwise set it to the default of all CCK rates and 6, 12, 24 for
848 * OFDM
849 */
850 if (priv->active_rate_basic & IWL_CCK_BASIC_RATES_MASK)
851 priv->staging_rxon.cck_basic_rates =
852 ((priv->active_rate_basic &
853 IWL_CCK_RATES_MASK) >> IWL_FIRST_CCK_RATE) & 0xF;
854 else
855 priv->staging_rxon.cck_basic_rates =
856 (IWL_CCK_BASIC_RATES_MASK >> IWL_FIRST_CCK_RATE) & 0xF;
857
858 if (priv->active_rate_basic & IWL_OFDM_BASIC_RATES_MASK)
859 priv->staging_rxon.ofdm_basic_rates =
860 ((priv->active_rate_basic &
861 (IWL_OFDM_BASIC_RATES_MASK | IWL_RATE_6M_MASK)) >>
862 IWL_FIRST_OFDM_RATE) & 0xFF;
863 else
864 priv->staging_rxon.ofdm_basic_rates =
865 (IWL_OFDM_BASIC_RATES_MASK >> IWL_FIRST_OFDM_RATE) & 0xFF;
866 }
867
868 #ifdef CONFIG_IWL4965_SPECTRUM_MEASUREMENT
869
870 #include "iwl-spectrum.h"
871
872 #define BEACON_TIME_MASK_LOW 0x00FFFFFF
873 #define BEACON_TIME_MASK_HIGH 0xFF000000
874 #define TIME_UNIT 1024
875
876 /*
877 * extended beacon time format
878 * time in usec will be changed into a 32-bit value in 8:24 format
879 * the high 1 byte is the beacon counts
880 * the lower 3 bytes is the time in usec within one beacon interval
881 */
882
883 static u32 iwl4965_usecs_to_beacons(u32 usec, u32 beacon_interval)
884 {
885 u32 quot;
886 u32 rem;
887 u32 interval = beacon_interval * 1024;
888
889 if (!interval || !usec)
890 return 0;
891
892 quot = (usec / interval) & (BEACON_TIME_MASK_HIGH >> 24);
893 rem = (usec % interval) & BEACON_TIME_MASK_LOW;
894
895 return (quot << 24) + rem;
896 }
897
898 /* base is usually what we get from ucode with each received frame,
899 * the same as HW timer counter counting down
900 */
901
902 static __le32 iwl4965_add_beacon_time(u32 base, u32 addon, u32 beacon_interval)
903 {
904 u32 base_low = base & BEACON_TIME_MASK_LOW;
905 u32 addon_low = addon & BEACON_TIME_MASK_LOW;
906 u32 interval = beacon_interval * TIME_UNIT;
907 u32 res = (base & BEACON_TIME_MASK_HIGH) +
908 (addon & BEACON_TIME_MASK_HIGH);
909
910 if (base_low > addon_low)
911 res += base_low - addon_low;
912 else if (base_low < addon_low) {
913 res += interval + base_low - addon_low;
914 res += (1 << 24);
915 } else
916 res += (1 << 24);
917
918 return cpu_to_le32(res);
919 }
920
921 static int iwl4965_get_measurement(struct iwl_priv *priv,
922 struct ieee80211_measurement_params *params,
923 u8 type)
924 {
925 struct iwl4965_spectrum_cmd spectrum;
926 struct iwl_rx_packet *res;
927 struct iwl_host_cmd cmd = {
928 .id = REPLY_SPECTRUM_MEASUREMENT_CMD,
929 .data = (void *)&spectrum,
930 .meta.flags = CMD_WANT_SKB,
931 };
932 u32 add_time = le64_to_cpu(params->start_time);
933 int rc;
934 int spectrum_resp_status;
935 int duration = le16_to_cpu(params->duration);
936
937 if (iwl_is_associated(priv))
938 add_time =
939 iwl4965_usecs_to_beacons(
940 le64_to_cpu(params->start_time) - priv->last_tsf,
941 le16_to_cpu(priv->rxon_timing.beacon_interval));
942
943 memset(&spectrum, 0, sizeof(spectrum));
944
945 spectrum.channel_count = cpu_to_le16(1);
946 spectrum.flags =
947 RXON_FLG_TSF2HOST_MSK | RXON_FLG_ANT_A_MSK | RXON_FLG_DIS_DIV_MSK;
948 spectrum.filter_flags = MEASUREMENT_FILTER_FLAG;
949 cmd.len = sizeof(spectrum);
950 spectrum.len = cpu_to_le16(cmd.len - sizeof(spectrum.len));
951
952 if (iwl_is_associated(priv))
953 spectrum.start_time =
954 iwl4965_add_beacon_time(priv->last_beacon_time,
955 add_time,
956 le16_to_cpu(priv->rxon_timing.beacon_interval));
957 else
958 spectrum.start_time = 0;
959
960 spectrum.channels[0].duration = cpu_to_le32(duration * TIME_UNIT);
961 spectrum.channels[0].channel = params->channel;
962 spectrum.channels[0].type = type;
963 if (priv->active_rxon.flags & RXON_FLG_BAND_24G_MSK)
964 spectrum.flags |= RXON_FLG_BAND_24G_MSK |
965 RXON_FLG_AUTO_DETECT_MSK | RXON_FLG_TGG_PROTECT_MSK;
966
967 rc = iwl_send_cmd_sync(priv, &cmd);
968 if (rc)
969 return rc;
970
971 res = (struct iwl_rx_packet *)cmd.meta.u.skb->data;
972 if (res->hdr.flags & IWL_CMD_FAILED_MSK) {
973 IWL_ERROR("Bad return from REPLY_RX_ON_ASSOC command\n");
974 rc = -EIO;
975 }
976
977 spectrum_resp_status = le16_to_cpu(res->u.spectrum.status);
978 switch (spectrum_resp_status) {
979 case 0: /* Command will be handled */
980 if (res->u.spectrum.id != 0xff) {
981 IWL_DEBUG_INFO
982 ("Replaced existing measurement: %d\n",
983 res->u.spectrum.id);
984 priv->measurement_status &= ~MEASUREMENT_READY;
985 }
986 priv->measurement_status |= MEASUREMENT_ACTIVE;
987 rc = 0;
988 break;
989
990 case 1: /* Command will not be handled */
991 rc = -EAGAIN;
992 break;
993 }
994
995 dev_kfree_skb_any(cmd.meta.u.skb);
996
997 return rc;
998 }
999 #endif
1000
1001 /******************************************************************************
1002 *
1003 * Generic RX handler implementations
1004 *
1005 ******************************************************************************/
1006 static void iwl_rx_reply_alive(struct iwl_priv *priv,
1007 struct iwl_rx_mem_buffer *rxb)
1008 {
1009 struct iwl_rx_packet *pkt = (struct iwl_rx_packet *)rxb->skb->data;
1010 struct iwl_alive_resp *palive;
1011 struct delayed_work *pwork;
1012
1013 palive = &pkt->u.alive_frame;
1014
1015 IWL_DEBUG_INFO("Alive ucode status 0x%08X revision "
1016 "0x%01X 0x%01X\n",
1017 palive->is_valid, palive->ver_type,
1018 palive->ver_subtype);
1019
1020 if (palive->ver_subtype == INITIALIZE_SUBTYPE) {
1021 IWL_DEBUG_INFO("Initialization Alive received.\n");
1022 memcpy(&priv->card_alive_init,
1023 &pkt->u.alive_frame,
1024 sizeof(struct iwl_init_alive_resp));
1025 pwork = &priv->init_alive_start;
1026 } else {
1027 IWL_DEBUG_INFO("Runtime Alive received.\n");
1028 memcpy(&priv->card_alive, &pkt->u.alive_frame,
1029 sizeof(struct iwl_alive_resp));
1030 pwork = &priv->alive_start;
1031 }
1032
1033 /* We delay the ALIVE response by 5ms to
1034 * give the HW RF Kill time to activate... */
1035 if (palive->is_valid == UCODE_VALID_OK)
1036 queue_delayed_work(priv->workqueue, pwork,
1037 msecs_to_jiffies(5));
1038 else
1039 IWL_WARNING("uCode did not respond OK.\n");
1040 }
1041
1042 static void iwl4965_rx_reply_error(struct iwl_priv *priv,
1043 struct iwl_rx_mem_buffer *rxb)
1044 {
1045 struct iwl_rx_packet *pkt = (struct iwl_rx_packet *)rxb->skb->data;
1046
1047 IWL_ERROR("Error Reply type 0x%08X cmd %s (0x%02X) "
1048 "seq 0x%04X ser 0x%08X\n",
1049 le32_to_cpu(pkt->u.err_resp.error_type),
1050 get_cmd_string(pkt->u.err_resp.cmd_id),
1051 pkt->u.err_resp.cmd_id,
1052 le16_to_cpu(pkt->u.err_resp.bad_cmd_seq_num),
1053 le32_to_cpu(pkt->u.err_resp.error_info));
1054 }
1055
1056 #define TX_STATUS_ENTRY(x) case TX_STATUS_FAIL_ ## x: return #x
1057
1058 static void iwl4965_rx_csa(struct iwl_priv *priv, struct iwl_rx_mem_buffer *rxb)
1059 {
1060 struct iwl_rx_packet *pkt = (struct iwl_rx_packet *)rxb->skb->data;
1061 struct iwl_rxon_cmd *rxon = (void *)&priv->active_rxon;
1062 struct iwl4965_csa_notification *csa = &(pkt->u.csa_notif);
1063 IWL_DEBUG_11H("CSA notif: channel %d, status %d\n",
1064 le16_to_cpu(csa->channel), le32_to_cpu(csa->status));
1065 rxon->channel = csa->channel;
1066 priv->staging_rxon.channel = csa->channel;
1067 }
1068
1069 static void iwl4965_rx_spectrum_measure_notif(struct iwl_priv *priv,
1070 struct iwl_rx_mem_buffer *rxb)
1071 {
1072 #ifdef CONFIG_IWL4965_SPECTRUM_MEASUREMENT
1073 struct iwl_rx_packet *pkt = (struct iwl_rx_packet *)rxb->skb->data;
1074 struct iwl4965_spectrum_notification *report = &(pkt->u.spectrum_notif);
1075
1076 if (!report->state) {
1077 IWL_DEBUG(IWL_DL_11H,
1078 "Spectrum Measure Notification: Start\n");
1079 return;
1080 }
1081
1082 memcpy(&priv->measure_report, report, sizeof(*report));
1083 priv->measurement_status |= MEASUREMENT_READY;
1084 #endif
1085 }
1086
1087 static void iwl4965_rx_pm_sleep_notif(struct iwl_priv *priv,
1088 struct iwl_rx_mem_buffer *rxb)
1089 {
1090 #ifdef CONFIG_IWLWIFI_DEBUG
1091 struct iwl_rx_packet *pkt = (struct iwl_rx_packet *)rxb->skb->data;
1092 struct iwl4965_sleep_notification *sleep = &(pkt->u.sleep_notif);
1093 IWL_DEBUG_RX("sleep mode: %d, src: %d\n",
1094 sleep->pm_sleep_mode, sleep->pm_wakeup_src);
1095 #endif
1096 }
1097
1098 static void iwl4965_rx_pm_debug_statistics_notif(struct iwl_priv *priv,
1099 struct iwl_rx_mem_buffer *rxb)
1100 {
1101 struct iwl_rx_packet *pkt = (struct iwl_rx_packet *)rxb->skb->data;
1102 IWL_DEBUG_RADIO("Dumping %d bytes of unhandled "
1103 "notification for %s:\n",
1104 le32_to_cpu(pkt->len), get_cmd_string(pkt->hdr.cmd));
1105 iwl_print_hex_dump(priv, IWL_DL_RADIO, pkt->u.raw, le32_to_cpu(pkt->len));
1106 }
1107
1108 static void iwl4965_bg_beacon_update(struct work_struct *work)
1109 {
1110 struct iwl_priv *priv =
1111 container_of(work, struct iwl_priv, beacon_update);
1112 struct sk_buff *beacon;
1113
1114 /* Pull updated AP beacon from mac80211. will fail if not in AP mode */
1115 beacon = ieee80211_beacon_get(priv->hw, priv->vif);
1116
1117 if (!beacon) {
1118 IWL_ERROR("update beacon failed\n");
1119 return;
1120 }
1121
1122 mutex_lock(&priv->mutex);
1123 /* new beacon skb is allocated every time; dispose previous.*/
1124 if (priv->ibss_beacon)
1125 dev_kfree_skb(priv->ibss_beacon);
1126
1127 priv->ibss_beacon = beacon;
1128 mutex_unlock(&priv->mutex);
1129
1130 iwl4965_send_beacon_cmd(priv);
1131 }
1132
1133 /**
1134 * iwl4965_bg_statistics_periodic - Timer callback to queue statistics
1135 *
1136 * This callback is provided in order to send a statistics request.
1137 *
1138 * This timer function is continually reset to execute within
1139 * REG_RECALIB_PERIOD seconds since the last STATISTICS_NOTIFICATION
1140 * was received. We need to ensure we receive the statistics in order
1141 * to update the temperature used for calibrating the TXPOWER.
1142 */
1143 static void iwl4965_bg_statistics_periodic(unsigned long data)
1144 {
1145 struct iwl_priv *priv = (struct iwl_priv *)data;
1146
1147 if (test_bit(STATUS_EXIT_PENDING, &priv->status))
1148 return;
1149
1150 iwl_send_statistics_request(priv, CMD_ASYNC);
1151 }
1152
1153 static void iwl4965_rx_beacon_notif(struct iwl_priv *priv,
1154 struct iwl_rx_mem_buffer *rxb)
1155 {
1156 #ifdef CONFIG_IWLWIFI_DEBUG
1157 struct iwl_rx_packet *pkt = (struct iwl_rx_packet *)rxb->skb->data;
1158 struct iwl4965_beacon_notif *beacon = &(pkt->u.beacon_status);
1159 u8 rate = iwl_hw_get_rate(beacon->beacon_notify_hdr.rate_n_flags);
1160
1161 IWL_DEBUG_RX("beacon status %x retries %d iss %d "
1162 "tsf %d %d rate %d\n",
1163 le32_to_cpu(beacon->beacon_notify_hdr.u.status) & TX_STATUS_MSK,
1164 beacon->beacon_notify_hdr.failure_frame,
1165 le32_to_cpu(beacon->ibss_mgr_status),
1166 le32_to_cpu(beacon->high_tsf),
1167 le32_to_cpu(beacon->low_tsf), rate);
1168 #endif
1169
1170 if ((priv->iw_mode == IEEE80211_IF_TYPE_AP) &&
1171 (!test_bit(STATUS_EXIT_PENDING, &priv->status)))
1172 queue_work(priv->workqueue, &priv->beacon_update);
1173 }
1174
1175 /* Handle notification from uCode that card's power state is changing
1176 * due to software, hardware, or critical temperature RFKILL */
1177 static void iwl4965_rx_card_state_notif(struct iwl_priv *priv,
1178 struct iwl_rx_mem_buffer *rxb)
1179 {
1180 struct iwl_rx_packet *pkt = (struct iwl_rx_packet *)rxb->skb->data;
1181 u32 flags = le32_to_cpu(pkt->u.card_state_notif.flags);
1182 unsigned long status = priv->status;
1183
1184 IWL_DEBUG_RF_KILL("Card state received: HW:%s SW:%s\n",
1185 (flags & HW_CARD_DISABLED) ? "Kill" : "On",
1186 (flags & SW_CARD_DISABLED) ? "Kill" : "On");
1187
1188 if (flags & (SW_CARD_DISABLED | HW_CARD_DISABLED |
1189 RF_CARD_DISABLED)) {
1190
1191 iwl_write32(priv, CSR_UCODE_DRV_GP1_SET,
1192 CSR_UCODE_DRV_GP1_BIT_CMD_BLOCKED);
1193
1194 if (!iwl_grab_nic_access(priv)) {
1195 iwl_write_direct32(
1196 priv, HBUS_TARG_MBX_C,
1197 HBUS_TARG_MBX_C_REG_BIT_CMD_BLOCKED);
1198
1199 iwl_release_nic_access(priv);
1200 }
1201
1202 if (!(flags & RXON_CARD_DISABLED)) {
1203 iwl_write32(priv, CSR_UCODE_DRV_GP1_CLR,
1204 CSR_UCODE_DRV_GP1_BIT_CMD_BLOCKED);
1205 if (!iwl_grab_nic_access(priv)) {
1206 iwl_write_direct32(
1207 priv, HBUS_TARG_MBX_C,
1208 HBUS_TARG_MBX_C_REG_BIT_CMD_BLOCKED);
1209
1210 iwl_release_nic_access(priv);
1211 }
1212 }
1213
1214 if (flags & RF_CARD_DISABLED) {
1215 iwl_write32(priv, CSR_UCODE_DRV_GP1_SET,
1216 CSR_UCODE_DRV_GP1_REG_BIT_CT_KILL_EXIT);
1217 iwl_read32(priv, CSR_UCODE_DRV_GP1);
1218 if (!iwl_grab_nic_access(priv))
1219 iwl_release_nic_access(priv);
1220 }
1221 }
1222
1223 if (flags & HW_CARD_DISABLED)
1224 set_bit(STATUS_RF_KILL_HW, &priv->status);
1225 else
1226 clear_bit(STATUS_RF_KILL_HW, &priv->status);
1227
1228
1229 if (flags & SW_CARD_DISABLED)
1230 set_bit(STATUS_RF_KILL_SW, &priv->status);
1231 else
1232 clear_bit(STATUS_RF_KILL_SW, &priv->status);
1233
1234 if (!(flags & RXON_CARD_DISABLED))
1235 iwl_scan_cancel(priv);
1236
1237 if ((test_bit(STATUS_RF_KILL_HW, &status) !=
1238 test_bit(STATUS_RF_KILL_HW, &priv->status)) ||
1239 (test_bit(STATUS_RF_KILL_SW, &status) !=
1240 test_bit(STATUS_RF_KILL_SW, &priv->status)))
1241 queue_work(priv->workqueue, &priv->rf_kill);
1242 else
1243 wake_up_interruptible(&priv->wait_command_queue);
1244 }
1245
1246 /**
1247 * iwl4965_setup_rx_handlers - Initialize Rx handler callbacks
1248 *
1249 * Setup the RX handlers for each of the reply types sent from the uCode
1250 * to the host.
1251 *
1252 * This function chains into the hardware specific files for them to setup
1253 * any hardware specific handlers as well.
1254 */
1255 static void iwl_setup_rx_handlers(struct iwl_priv *priv)
1256 {
1257 priv->rx_handlers[REPLY_ALIVE] = iwl_rx_reply_alive;
1258 priv->rx_handlers[REPLY_ERROR] = iwl4965_rx_reply_error;
1259 priv->rx_handlers[CHANNEL_SWITCH_NOTIFICATION] = iwl4965_rx_csa;
1260 priv->rx_handlers[SPECTRUM_MEASURE_NOTIFICATION] =
1261 iwl4965_rx_spectrum_measure_notif;
1262 priv->rx_handlers[PM_SLEEP_NOTIFICATION] = iwl4965_rx_pm_sleep_notif;
1263 priv->rx_handlers[PM_DEBUG_STATISTIC_NOTIFIC] =
1264 iwl4965_rx_pm_debug_statistics_notif;
1265 priv->rx_handlers[BEACON_NOTIFICATION] = iwl4965_rx_beacon_notif;
1266
1267 /*
1268 * The same handler is used for both the REPLY to a discrete
1269 * statistics request from the host as well as for the periodic
1270 * statistics notifications (after received beacons) from the uCode.
1271 */
1272 priv->rx_handlers[REPLY_STATISTICS_CMD] = iwl_rx_statistics;
1273 priv->rx_handlers[STATISTICS_NOTIFICATION] = iwl_rx_statistics;
1274
1275 iwl_setup_rx_scan_handlers(priv);
1276
1277 /* status change handler */
1278 priv->rx_handlers[CARD_STATE_NOTIFICATION] = iwl4965_rx_card_state_notif;
1279
1280 priv->rx_handlers[MISSED_BEACONS_NOTIFICATION] =
1281 iwl_rx_missed_beacon_notif;
1282 /* Rx handlers */
1283 priv->rx_handlers[REPLY_RX_PHY_CMD] = iwl_rx_reply_rx_phy;
1284 priv->rx_handlers[REPLY_RX_MPDU_CMD] = iwl_rx_reply_rx;
1285 /* block ack */
1286 priv->rx_handlers[REPLY_COMPRESSED_BA] = iwl_rx_reply_compressed_ba;
1287 /* Set up hardware specific Rx handlers */
1288 priv->cfg->ops->lib->rx_handler_setup(priv);
1289 }
1290
1291 /*
1292 * this should be called while priv->lock is locked
1293 */
1294 static void __iwl_rx_replenish(struct iwl_priv *priv)
1295 {
1296 iwl_rx_allocate(priv);
1297 iwl_rx_queue_restock(priv);
1298 }
1299
1300
1301 /**
1302 * iwl_rx_handle - Main entry function for receiving responses from uCode
1303 *
1304 * Uses the priv->rx_handlers callback function array to invoke
1305 * the appropriate handlers, including command responses,
1306 * frame-received notifications, and other notifications.
1307 */
1308 void iwl_rx_handle(struct iwl_priv *priv)
1309 {
1310 struct iwl_rx_mem_buffer *rxb;
1311 struct iwl_rx_packet *pkt;
1312 struct iwl_rx_queue *rxq = &priv->rxq;
1313 u32 r, i;
1314 int reclaim;
1315 unsigned long flags;
1316 u8 fill_rx = 0;
1317 u32 count = 8;
1318
1319 /* uCode's read index (stored in shared DRAM) indicates the last Rx
1320 * buffer that the driver may process (last buffer filled by ucode). */
1321 r = priv->cfg->ops->lib->shared_mem_rx_idx(priv);
1322 i = rxq->read;
1323
1324 /* Rx interrupt, but nothing sent from uCode */
1325 if (i == r)
1326 IWL_DEBUG(IWL_DL_RX, "r = %d, i = %d\n", r, i);
1327
1328 if (iwl_rx_queue_space(rxq) > (RX_QUEUE_SIZE / 2))
1329 fill_rx = 1;
1330
1331 while (i != r) {
1332 rxb = rxq->queue[i];
1333
1334 /* If an RXB doesn't have a Rx queue slot associated with it,
1335 * then a bug has been introduced in the queue refilling
1336 * routines -- catch it here */
1337 BUG_ON(rxb == NULL);
1338
1339 rxq->queue[i] = NULL;
1340
1341 pci_dma_sync_single_for_cpu(priv->pci_dev, rxb->dma_addr,
1342 priv->hw_params.rx_buf_size,
1343 PCI_DMA_FROMDEVICE);
1344 pkt = (struct iwl_rx_packet *)rxb->skb->data;
1345
1346 /* Reclaim a command buffer only if this packet is a response
1347 * to a (driver-originated) command.
1348 * If the packet (e.g. Rx frame) originated from uCode,
1349 * there is no command buffer to reclaim.
1350 * Ucode should set SEQ_RX_FRAME bit if ucode-originated,
1351 * but apparently a few don't get set; catch them here. */
1352 reclaim = !(pkt->hdr.sequence & SEQ_RX_FRAME) &&
1353 (pkt->hdr.cmd != REPLY_RX_PHY_CMD) &&
1354 (pkt->hdr.cmd != REPLY_RX) &&
1355 (pkt->hdr.cmd != REPLY_COMPRESSED_BA) &&
1356 (pkt->hdr.cmd != STATISTICS_NOTIFICATION) &&
1357 (pkt->hdr.cmd != REPLY_TX);
1358
1359 /* Based on type of command response or notification,
1360 * handle those that need handling via function in
1361 * rx_handlers table. See iwl4965_setup_rx_handlers() */
1362 if (priv->rx_handlers[pkt->hdr.cmd]) {
1363 IWL_DEBUG(IWL_DL_RX, "r = %d, i = %d, %s, 0x%02x\n", r,
1364 i, get_cmd_string(pkt->hdr.cmd), pkt->hdr.cmd);
1365 priv->rx_handlers[pkt->hdr.cmd] (priv, rxb);
1366 } else {
1367 /* No handling needed */
1368 IWL_DEBUG(IWL_DL_RX,
1369 "r %d i %d No handler needed for %s, 0x%02x\n",
1370 r, i, get_cmd_string(pkt->hdr.cmd),
1371 pkt->hdr.cmd);
1372 }
1373
1374 if (reclaim) {
1375 /* Invoke any callbacks, transfer the skb to caller, and
1376 * fire off the (possibly) blocking iwl_send_cmd()
1377 * as we reclaim the driver command queue */
1378 if (rxb && rxb->skb)
1379 iwl_tx_cmd_complete(priv, rxb);
1380 else
1381 IWL_WARNING("Claim null rxb?\n");
1382 }
1383
1384 /* For now we just don't re-use anything. We can tweak this
1385 * later to try and re-use notification packets and SKBs that
1386 * fail to Rx correctly */
1387 if (rxb->skb != NULL) {
1388 priv->alloc_rxb_skb--;
1389 dev_kfree_skb_any(rxb->skb);
1390 rxb->skb = NULL;
1391 }
1392
1393 pci_unmap_single(priv->pci_dev, rxb->dma_addr,
1394 priv->hw_params.rx_buf_size,
1395 PCI_DMA_FROMDEVICE);
1396 spin_lock_irqsave(&rxq->lock, flags);
1397 list_add_tail(&rxb->list, &priv->rxq.rx_used);
1398 spin_unlock_irqrestore(&rxq->lock, flags);
1399 i = (i + 1) & RX_QUEUE_MASK;
1400 /* If there are a lot of unused frames,
1401 * restock the Rx queue so ucode wont assert. */
1402 if (fill_rx) {
1403 count++;
1404 if (count >= 8) {
1405 priv->rxq.read = i;
1406 __iwl_rx_replenish(priv);
1407 count = 0;
1408 }
1409 }
1410 }
1411
1412 /* Backtrack one entry */
1413 priv->rxq.read = i;
1414 iwl_rx_queue_restock(priv);
1415 }
1416
1417 #ifdef CONFIG_IWLWIFI_DEBUG
1418 static void iwl4965_print_rx_config_cmd(struct iwl_priv *priv)
1419 {
1420 struct iwl_rxon_cmd *rxon = &priv->staging_rxon;
1421 DECLARE_MAC_BUF(mac);
1422
1423 IWL_DEBUG_RADIO("RX CONFIG:\n");
1424 iwl_print_hex_dump(priv, IWL_DL_RADIO, (u8 *) rxon, sizeof(*rxon));
1425 IWL_DEBUG_RADIO("u16 channel: 0x%x\n", le16_to_cpu(rxon->channel));
1426 IWL_DEBUG_RADIO("u32 flags: 0x%08X\n", le32_to_cpu(rxon->flags));
1427 IWL_DEBUG_RADIO("u32 filter_flags: 0x%08x\n",
1428 le32_to_cpu(rxon->filter_flags));
1429 IWL_DEBUG_RADIO("u8 dev_type: 0x%x\n", rxon->dev_type);
1430 IWL_DEBUG_RADIO("u8 ofdm_basic_rates: 0x%02x\n",
1431 rxon->ofdm_basic_rates);
1432 IWL_DEBUG_RADIO("u8 cck_basic_rates: 0x%02x\n", rxon->cck_basic_rates);
1433 IWL_DEBUG_RADIO("u8[6] node_addr: %s\n",
1434 print_mac(mac, rxon->node_addr));
1435 IWL_DEBUG_RADIO("u8[6] bssid_addr: %s\n",
1436 print_mac(mac, rxon->bssid_addr));
1437 IWL_DEBUG_RADIO("u16 assoc_id: 0x%x\n", le16_to_cpu(rxon->assoc_id));
1438 }
1439 #endif
1440
1441 static void iwl4965_enable_interrupts(struct iwl_priv *priv)
1442 {
1443 IWL_DEBUG_ISR("Enabling interrupts\n");
1444 set_bit(STATUS_INT_ENABLED, &priv->status);
1445 iwl_write32(priv, CSR_INT_MASK, CSR_INI_SET_MASK);
1446 }
1447
1448 /* call this function to flush any scheduled tasklet */
1449 static inline void iwl_synchronize_irq(struct iwl_priv *priv)
1450 {
1451 /* wait to make sure we flush pedding tasklet*/
1452 synchronize_irq(priv->pci_dev->irq);
1453 tasklet_kill(&priv->irq_tasklet);
1454 }
1455
1456 static inline void iwl4965_disable_interrupts(struct iwl_priv *priv)
1457 {
1458 clear_bit(STATUS_INT_ENABLED, &priv->status);
1459
1460 /* disable interrupts from uCode/NIC to host */
1461 iwl_write32(priv, CSR_INT_MASK, 0x00000000);
1462
1463 /* acknowledge/clear/reset any interrupts still pending
1464 * from uCode or flow handler (Rx/Tx DMA) */
1465 iwl_write32(priv, CSR_INT, 0xffffffff);
1466 iwl_write32(priv, CSR_FH_INT_STATUS, 0xffffffff);
1467 IWL_DEBUG_ISR("Disabled interrupts\n");
1468 }
1469
1470
1471 /**
1472 * iwl4965_irq_handle_error - called for HW or SW error interrupt from card
1473 */
1474 static void iwl4965_irq_handle_error(struct iwl_priv *priv)
1475 {
1476 /* Set the FW error flag -- cleared on iwl4965_down */
1477 set_bit(STATUS_FW_ERROR, &priv->status);
1478
1479 /* Cancel currently queued command. */
1480 clear_bit(STATUS_HCMD_ACTIVE, &priv->status);
1481
1482 #ifdef CONFIG_IWLWIFI_DEBUG
1483 if (priv->debug_level & IWL_DL_FW_ERRORS) {
1484 iwl_dump_nic_error_log(priv);
1485 iwl_dump_nic_event_log(priv);
1486 iwl4965_print_rx_config_cmd(priv);
1487 }
1488 #endif
1489
1490 wake_up_interruptible(&priv->wait_command_queue);
1491
1492 /* Keep the restart process from trying to send host
1493 * commands by clearing the INIT status bit */
1494 clear_bit(STATUS_READY, &priv->status);
1495
1496 if (!test_bit(STATUS_EXIT_PENDING, &priv->status)) {
1497 IWL_DEBUG(IWL_DL_FW_ERRORS,
1498 "Restarting adapter due to uCode error.\n");
1499
1500 if (iwl_is_associated(priv)) {
1501 memcpy(&priv->recovery_rxon, &priv->active_rxon,
1502 sizeof(priv->recovery_rxon));
1503 priv->error_recovering = 1;
1504 }
1505 if (priv->cfg->mod_params->restart_fw)
1506 queue_work(priv->workqueue, &priv->restart);
1507 }
1508 }
1509
1510 static void iwl4965_error_recovery(struct iwl_priv *priv)
1511 {
1512 unsigned long flags;
1513
1514 memcpy(&priv->staging_rxon, &priv->recovery_rxon,
1515 sizeof(priv->staging_rxon));
1516 priv->staging_rxon.filter_flags &= ~RXON_FILTER_ASSOC_MSK;
1517 iwl4965_commit_rxon(priv);
1518
1519 iwl_rxon_add_station(priv, priv->bssid, 1);
1520
1521 spin_lock_irqsave(&priv->lock, flags);
1522 priv->assoc_id = le16_to_cpu(priv->staging_rxon.assoc_id);
1523 priv->error_recovering = 0;
1524 spin_unlock_irqrestore(&priv->lock, flags);
1525 }
1526
1527 static void iwl4965_irq_tasklet(struct iwl_priv *priv)
1528 {
1529 u32 inta, handled = 0;
1530 u32 inta_fh;
1531 unsigned long flags;
1532 #ifdef CONFIG_IWLWIFI_DEBUG
1533 u32 inta_mask;
1534 #endif
1535
1536 spin_lock_irqsave(&priv->lock, flags);
1537
1538 /* Ack/clear/reset pending uCode interrupts.
1539 * Note: Some bits in CSR_INT are "OR" of bits in CSR_FH_INT_STATUS,
1540 * and will clear only when CSR_FH_INT_STATUS gets cleared. */
1541 inta = iwl_read32(priv, CSR_INT);
1542 iwl_write32(priv, CSR_INT, inta);
1543
1544 /* Ack/clear/reset pending flow-handler (DMA) interrupts.
1545 * Any new interrupts that happen after this, either while we're
1546 * in this tasklet, or later, will show up in next ISR/tasklet. */
1547 inta_fh = iwl_read32(priv, CSR_FH_INT_STATUS);
1548 iwl_write32(priv, CSR_FH_INT_STATUS, inta_fh);
1549
1550 #ifdef CONFIG_IWLWIFI_DEBUG
1551 if (priv->debug_level & IWL_DL_ISR) {
1552 /* just for debug */
1553 inta_mask = iwl_read32(priv, CSR_INT_MASK);
1554 IWL_DEBUG_ISR("inta 0x%08x, enabled 0x%08x, fh 0x%08x\n",
1555 inta, inta_mask, inta_fh);
1556 }
1557 #endif
1558
1559 /* Since CSR_INT and CSR_FH_INT_STATUS reads and clears are not
1560 * atomic, make sure that inta covers all the interrupts that
1561 * we've discovered, even if FH interrupt came in just after
1562 * reading CSR_INT. */
1563 if (inta_fh & CSR49_FH_INT_RX_MASK)
1564 inta |= CSR_INT_BIT_FH_RX;
1565 if (inta_fh & CSR49_FH_INT_TX_MASK)
1566 inta |= CSR_INT_BIT_FH_TX;
1567
1568 /* Now service all interrupt bits discovered above. */
1569 if (inta & CSR_INT_BIT_HW_ERR) {
1570 IWL_ERROR("Microcode HW error detected. Restarting.\n");
1571
1572 /* Tell the device to stop sending interrupts */
1573 iwl4965_disable_interrupts(priv);
1574
1575 iwl4965_irq_handle_error(priv);
1576
1577 handled |= CSR_INT_BIT_HW_ERR;
1578
1579 spin_unlock_irqrestore(&priv->lock, flags);
1580
1581 return;
1582 }
1583
1584 #ifdef CONFIG_IWLWIFI_DEBUG
1585 if (priv->debug_level & (IWL_DL_ISR)) {
1586 /* NIC fires this, but we don't use it, redundant with WAKEUP */
1587 if (inta & CSR_INT_BIT_SCD)
1588 IWL_DEBUG_ISR("Scheduler finished to transmit "
1589 "the frame/frames.\n");
1590
1591 /* Alive notification via Rx interrupt will do the real work */
1592 if (inta & CSR_INT_BIT_ALIVE)
1593 IWL_DEBUG_ISR("Alive interrupt\n");
1594 }
1595 #endif
1596 /* Safely ignore these bits for debug checks below */
1597 inta &= ~(CSR_INT_BIT_SCD | CSR_INT_BIT_ALIVE);
1598
1599 /* HW RF KILL switch toggled */
1600 if (inta & CSR_INT_BIT_RF_KILL) {
1601 int hw_rf_kill = 0;
1602 if (!(iwl_read32(priv, CSR_GP_CNTRL) &
1603 CSR_GP_CNTRL_REG_FLAG_HW_RF_KILL_SW))
1604 hw_rf_kill = 1;
1605
1606 IWL_DEBUG(IWL_DL_RF_KILL, "RF_KILL bit toggled to %s.\n",
1607 hw_rf_kill ? "disable radio":"enable radio");
1608
1609 /* driver only loads ucode once setting the interface up.
1610 * the driver as well won't allow loading if RFKILL is set
1611 * therefore no need to restart the driver from this handler
1612 */
1613 if (!hw_rf_kill && !test_bit(STATUS_ALIVE, &priv->status))
1614 clear_bit(STATUS_RF_KILL_HW, &priv->status);
1615
1616 handled |= CSR_INT_BIT_RF_KILL;
1617 }
1618
1619 /* Chip got too hot and stopped itself */
1620 if (inta & CSR_INT_BIT_CT_KILL) {
1621 IWL_ERROR("Microcode CT kill error detected.\n");
1622 handled |= CSR_INT_BIT_CT_KILL;
1623 }
1624
1625 /* Error detected by uCode */
1626 if (inta & CSR_INT_BIT_SW_ERR) {
1627 IWL_ERROR("Microcode SW error detected. Restarting 0x%X.\n",
1628 inta);
1629 iwl4965_irq_handle_error(priv);
1630 handled |= CSR_INT_BIT_SW_ERR;
1631 }
1632
1633 /* uCode wakes up after power-down sleep */
1634 if (inta & CSR_INT_BIT_WAKEUP) {
1635 IWL_DEBUG_ISR("Wakeup interrupt\n");
1636 iwl_rx_queue_update_write_ptr(priv, &priv->rxq);
1637 iwl_txq_update_write_ptr(priv, &priv->txq[0]);
1638 iwl_txq_update_write_ptr(priv, &priv->txq[1]);
1639 iwl_txq_update_write_ptr(priv, &priv->txq[2]);
1640 iwl_txq_update_write_ptr(priv, &priv->txq[3]);
1641 iwl_txq_update_write_ptr(priv, &priv->txq[4]);
1642 iwl_txq_update_write_ptr(priv, &priv->txq[5]);
1643
1644 handled |= CSR_INT_BIT_WAKEUP;
1645 }
1646
1647 /* All uCode command responses, including Tx command responses,
1648 * Rx "responses" (frame-received notification), and other
1649 * notifications from uCode come through here*/
1650 if (inta & (CSR_INT_BIT_FH_RX | CSR_INT_BIT_SW_RX)) {
1651 iwl_rx_handle(priv);
1652 handled |= (CSR_INT_BIT_FH_RX | CSR_INT_BIT_SW_RX);
1653 }
1654
1655 if (inta & CSR_INT_BIT_FH_TX) {
1656 IWL_DEBUG_ISR("Tx interrupt\n");
1657 handled |= CSR_INT_BIT_FH_TX;
1658 /* FH finished to write, send event */
1659 priv->ucode_write_complete = 1;
1660 wake_up_interruptible(&priv->wait_command_queue);
1661 }
1662
1663 if (inta & ~handled)
1664 IWL_ERROR("Unhandled INTA bits 0x%08x\n", inta & ~handled);
1665
1666 if (inta & ~CSR_INI_SET_MASK) {
1667 IWL_WARNING("Disabled INTA bits 0x%08x were pending\n",
1668 inta & ~CSR_INI_SET_MASK);
1669 IWL_WARNING(" with FH_INT = 0x%08x\n", inta_fh);
1670 }
1671
1672 /* Re-enable all interrupts */
1673 /* only Re-enable if diabled by irq */
1674 if (test_bit(STATUS_INT_ENABLED, &priv->status))
1675 iwl4965_enable_interrupts(priv);
1676
1677 #ifdef CONFIG_IWLWIFI_DEBUG
1678 if (priv->debug_level & (IWL_DL_ISR)) {
1679 inta = iwl_read32(priv, CSR_INT);
1680 inta_mask = iwl_read32(priv, CSR_INT_MASK);
1681 inta_fh = iwl_read32(priv, CSR_FH_INT_STATUS);
1682 IWL_DEBUG_ISR("End inta 0x%08x, enabled 0x%08x, fh 0x%08x, "
1683 "flags 0x%08lx\n", inta, inta_mask, inta_fh, flags);
1684 }
1685 #endif
1686 spin_unlock_irqrestore(&priv->lock, flags);
1687 }
1688
1689 static irqreturn_t iwl4965_isr(int irq, void *data)
1690 {
1691 struct iwl_priv *priv = data;
1692 u32 inta, inta_mask;
1693 u32 inta_fh;
1694 if (!priv)
1695 return IRQ_NONE;
1696
1697 spin_lock(&priv->lock);
1698
1699 /* Disable (but don't clear!) interrupts here to avoid
1700 * back-to-back ISRs and sporadic interrupts from our NIC.
1701 * If we have something to service, the tasklet will re-enable ints.
1702 * If we *don't* have something, we'll re-enable before leaving here. */
1703 inta_mask = iwl_read32(priv, CSR_INT_MASK); /* just for debug */
1704 iwl_write32(priv, CSR_INT_MASK, 0x00000000);
1705
1706 /* Discover which interrupts are active/pending */
1707 inta = iwl_read32(priv, CSR_INT);
1708 inta_fh = iwl_read32(priv, CSR_FH_INT_STATUS);
1709
1710 /* Ignore interrupt if there's nothing in NIC to service.
1711 * This may be due to IRQ shared with another device,
1712 * or due to sporadic interrupts thrown from our NIC. */
1713 if (!inta && !inta_fh) {
1714 IWL_DEBUG_ISR("Ignore interrupt, inta == 0, inta_fh == 0\n");
1715 goto none;
1716 }
1717
1718 if ((inta == 0xFFFFFFFF) || ((inta & 0xFFFFFFF0) == 0xa5a5a5a0)) {
1719 /* Hardware disappeared. It might have already raised
1720 * an interrupt */
1721 IWL_WARNING("HARDWARE GONE?? INTA == 0x%080x\n", inta);
1722 goto unplugged;
1723 }
1724
1725 IWL_DEBUG_ISR("ISR inta 0x%08x, enabled 0x%08x, fh 0x%08x\n",
1726 inta, inta_mask, inta_fh);
1727
1728 inta &= ~CSR_INT_BIT_SCD;
1729
1730 /* iwl4965_irq_tasklet() will service interrupts and re-enable them */
1731 if (likely(inta || inta_fh))
1732 tasklet_schedule(&priv->irq_tasklet);
1733
1734 unplugged:
1735 spin_unlock(&priv->lock);
1736 return IRQ_HANDLED;
1737
1738 none:
1739 /* re-enable interrupts here since we don't have anything to service. */
1740 /* only Re-enable if diabled by irq */
1741 if (test_bit(STATUS_INT_ENABLED, &priv->status))
1742 iwl4965_enable_interrupts(priv);
1743 spin_unlock(&priv->lock);
1744 return IRQ_NONE;
1745 }
1746
1747 /******************************************************************************
1748 *
1749 * uCode download functions
1750 *
1751 ******************************************************************************/
1752
1753 static void iwl4965_dealloc_ucode_pci(struct iwl_priv *priv)
1754 {
1755 iwl_free_fw_desc(priv->pci_dev, &priv->ucode_code);
1756 iwl_free_fw_desc(priv->pci_dev, &priv->ucode_data);
1757 iwl_free_fw_desc(priv->pci_dev, &priv->ucode_data_backup);
1758 iwl_free_fw_desc(priv->pci_dev, &priv->ucode_init);
1759 iwl_free_fw_desc(priv->pci_dev, &priv->ucode_init_data);
1760 iwl_free_fw_desc(priv->pci_dev, &priv->ucode_boot);
1761 }
1762
1763 static void iwl4965_nic_start(struct iwl_priv *priv)
1764 {
1765 /* Remove all resets to allow NIC to operate */
1766 iwl_write32(priv, CSR_RESET, 0);
1767 }
1768
1769
1770 /**
1771 * iwl4965_read_ucode - Read uCode images from disk file.
1772 *
1773 * Copy into buffers for card to fetch via bus-mastering
1774 */
1775 static int iwl4965_read_ucode(struct iwl_priv *priv)
1776 {
1777 struct iwl_ucode *ucode;
1778 int ret;
1779 const struct firmware *ucode_raw;
1780 const char *name = priv->cfg->fw_name;
1781 u8 *src;
1782 size_t len;
1783 u32 ver, inst_size, data_size, init_size, init_data_size, boot_size;
1784
1785 /* Ask kernel firmware_class module to get the boot firmware off disk.
1786 * request_firmware() is synchronous, file is in memory on return. */
1787 ret = request_firmware(&ucode_raw, name, &priv->pci_dev->dev);
1788 if (ret < 0) {
1789 IWL_ERROR("%s firmware file req failed: Reason %d\n",
1790 name, ret);
1791 goto error;
1792 }
1793
1794 IWL_DEBUG_INFO("Got firmware '%s' file (%zd bytes) from disk\n",
1795 name, ucode_raw->size);
1796
1797 /* Make sure that we got at least our header! */
1798 if (ucode_raw->size < sizeof(*ucode)) {
1799 IWL_ERROR("File size way too small!\n");
1800 ret = -EINVAL;
1801 goto err_release;
1802 }
1803
1804 /* Data from ucode file: header followed by uCode images */
1805 ucode = (void *)ucode_raw->data;
1806
1807 ver = le32_to_cpu(ucode->ver);
1808 inst_size = le32_to_cpu(ucode->inst_size);
1809 data_size = le32_to_cpu(ucode->data_size);
1810 init_size = le32_to_cpu(ucode->init_size);
1811 init_data_size = le32_to_cpu(ucode->init_data_size);
1812 boot_size = le32_to_cpu(ucode->boot_size);
1813
1814 IWL_DEBUG_INFO("f/w package hdr ucode version = 0x%x\n", ver);
1815 IWL_DEBUG_INFO("f/w package hdr runtime inst size = %u\n",
1816 inst_size);
1817 IWL_DEBUG_INFO("f/w package hdr runtime data size = %u\n",
1818 data_size);
1819 IWL_DEBUG_INFO("f/w package hdr init inst size = %u\n",
1820 init_size);
1821 IWL_DEBUG_INFO("f/w package hdr init data size = %u\n",
1822 init_data_size);
1823 IWL_DEBUG_INFO("f/w package hdr boot inst size = %u\n",
1824 boot_size);
1825
1826 /* Verify size of file vs. image size info in file's header */
1827 if (ucode_raw->size < sizeof(*ucode) +
1828 inst_size + data_size + init_size +
1829 init_data_size + boot_size) {
1830
1831 IWL_DEBUG_INFO("uCode file size %d too small\n",
1832 (int)ucode_raw->size);
1833 ret = -EINVAL;
1834 goto err_release;
1835 }
1836
1837 /* Verify that uCode images will fit in card's SRAM */
1838 if (inst_size > priv->hw_params.max_inst_size) {
1839 IWL_DEBUG_INFO("uCode instr len %d too large to fit in\n",
1840 inst_size);
1841 ret = -EINVAL;
1842 goto err_release;
1843 }
1844
1845 if (data_size > priv->hw_params.max_data_size) {
1846 IWL_DEBUG_INFO("uCode data len %d too large to fit in\n",
1847 data_size);
1848 ret = -EINVAL;
1849 goto err_release;
1850 }
1851 if (init_size > priv->hw_params.max_inst_size) {
1852 IWL_DEBUG_INFO
1853 ("uCode init instr len %d too large to fit in\n",
1854 init_size);
1855 ret = -EINVAL;
1856 goto err_release;
1857 }
1858 if (init_data_size > priv->hw_params.max_data_size) {
1859 IWL_DEBUG_INFO
1860 ("uCode init data len %d too large to fit in\n",
1861 init_data_size);
1862 ret = -EINVAL;
1863 goto err_release;
1864 }
1865 if (boot_size > priv->hw_params.max_bsm_size) {
1866 IWL_DEBUG_INFO
1867 ("uCode boot instr len %d too large to fit in\n",
1868 boot_size);
1869 ret = -EINVAL;
1870 goto err_release;
1871 }
1872
1873 /* Allocate ucode buffers for card's bus-master loading ... */
1874
1875 /* Runtime instructions and 2 copies of data:
1876 * 1) unmodified from disk
1877 * 2) backup cache for save/restore during power-downs */
1878 priv->ucode_code.len = inst_size;
1879 iwl_alloc_fw_desc(priv->pci_dev, &priv->ucode_code);
1880
1881 priv->ucode_data.len = data_size;
1882 iwl_alloc_fw_desc(priv->pci_dev, &priv->ucode_data);
1883
1884 priv->ucode_data_backup.len = data_size;
1885 iwl_alloc_fw_desc(priv->pci_dev, &priv->ucode_data_backup);
1886
1887 /* Initialization instructions and data */
1888 if (init_size && init_data_size) {
1889 priv->ucode_init.len = init_size;
1890 iwl_alloc_fw_desc(priv->pci_dev, &priv->ucode_init);
1891
1892 priv->ucode_init_data.len = init_data_size;
1893 iwl_alloc_fw_desc(priv->pci_dev, &priv->ucode_init_data);
1894
1895 if (!priv->ucode_init.v_addr || !priv->ucode_init_data.v_addr)
1896 goto err_pci_alloc;
1897 }
1898
1899 /* Bootstrap (instructions only, no data) */
1900 if (boot_size) {
1901 priv->ucode_boot.len = boot_size;
1902 iwl_alloc_fw_desc(priv->pci_dev, &priv->ucode_boot);
1903
1904 if (!priv->ucode_boot.v_addr)
1905 goto err_pci_alloc;
1906 }
1907
1908 /* Copy images into buffers for card's bus-master reads ... */
1909
1910 /* Runtime instructions (first block of data in file) */
1911 src = &ucode->data[0];
1912 len = priv->ucode_code.len;
1913 IWL_DEBUG_INFO("Copying (but not loading) uCode instr len %Zd\n", len);
1914 memcpy(priv->ucode_code.v_addr, src, len);
1915 IWL_DEBUG_INFO("uCode instr buf vaddr = 0x%p, paddr = 0x%08x\n",
1916 priv->ucode_code.v_addr, (u32)priv->ucode_code.p_addr);
1917
1918 /* Runtime data (2nd block)
1919 * NOTE: Copy into backup buffer will be done in iwl4965_up() */
1920 src = &ucode->data[inst_size];
1921 len = priv->ucode_data.len;
1922 IWL_DEBUG_INFO("Copying (but not loading) uCode data len %Zd\n", len);
1923 memcpy(priv->ucode_data.v_addr, src, len);
1924 memcpy(priv->ucode_data_backup.v_addr, src, len);
1925
1926 /* Initialization instructions (3rd block) */
1927 if (init_size) {
1928 src = &ucode->data[inst_size + data_size];
1929 len = priv->ucode_init.len;
1930 IWL_DEBUG_INFO("Copying (but not loading) init instr len %Zd\n",
1931 len);
1932 memcpy(priv->ucode_init.v_addr, src, len);
1933 }
1934
1935 /* Initialization data (4th block) */
1936 if (init_data_size) {
1937 src = &ucode->data[inst_size + data_size + init_size];
1938 len = priv->ucode_init_data.len;
1939 IWL_DEBUG_INFO("Copying (but not loading) init data len %Zd\n",
1940 len);
1941 memcpy(priv->ucode_init_data.v_addr, src, len);
1942 }
1943
1944 /* Bootstrap instructions (5th block) */
1945 src = &ucode->data[inst_size + data_size + init_size + init_data_size];
1946 len = priv->ucode_boot.len;
1947 IWL_DEBUG_INFO("Copying (but not loading) boot instr len %Zd\n", len);
1948 memcpy(priv->ucode_boot.v_addr, src, len);
1949
1950 /* We have our copies now, allow OS release its copies */
1951 release_firmware(ucode_raw);
1952 return 0;
1953
1954 err_pci_alloc:
1955 IWL_ERROR("failed to allocate pci memory\n");
1956 ret = -ENOMEM;
1957 iwl4965_dealloc_ucode_pci(priv);
1958
1959 err_release:
1960 release_firmware(ucode_raw);
1961
1962 error:
1963 return ret;
1964 }
1965
1966 /**
1967 * iwl_alive_start - called after REPLY_ALIVE notification received
1968 * from protocol/runtime uCode (initialization uCode's
1969 * Alive gets handled by iwl_init_alive_start()).
1970 */
1971 static void iwl_alive_start(struct iwl_priv *priv)
1972 {
1973 int ret = 0;
1974
1975 IWL_DEBUG_INFO("Runtime Alive received.\n");
1976
1977 if (priv->card_alive.is_valid != UCODE_VALID_OK) {
1978 /* We had an error bringing up the hardware, so take it
1979 * all the way back down so we can try again */
1980 IWL_DEBUG_INFO("Alive failed.\n");
1981 goto restart;
1982 }
1983
1984 /* Initialize uCode has loaded Runtime uCode ... verify inst image.
1985 * This is a paranoid check, because we would not have gotten the
1986 * "runtime" alive if code weren't properly loaded. */
1987 if (iwl_verify_ucode(priv)) {
1988 /* Runtime instruction load was bad;
1989 * take it all the way back down so we can try again */
1990 IWL_DEBUG_INFO("Bad runtime uCode load.\n");
1991 goto restart;
1992 }
1993
1994 iwl_clear_stations_table(priv);
1995 ret = priv->cfg->ops->lib->alive_notify(priv);
1996 if (ret) {
1997 IWL_WARNING("Could not complete ALIVE transition [ntf]: %d\n",
1998 ret);
1999 goto restart;
2000 }
2001
2002 /* After the ALIVE response, we can send host commands to 4965 uCode */
2003 set_bit(STATUS_ALIVE, &priv->status);
2004
2005 if (iwl_is_rfkill(priv))
2006 return;
2007
2008 ieee80211_wake_queues(priv->hw);
2009
2010 priv->active_rate = priv->rates_mask;
2011 priv->active_rate_basic = priv->rates_mask & IWL_BASIC_RATES_MASK;
2012
2013 if (iwl_is_associated(priv)) {
2014 struct iwl_rxon_cmd *active_rxon =
2015 (struct iwl_rxon_cmd *)&priv->active_rxon;
2016
2017 memcpy(&priv->staging_rxon, &priv->active_rxon,
2018 sizeof(priv->staging_rxon));
2019 active_rxon->filter_flags &= ~RXON_FILTER_ASSOC_MSK;
2020 } else {
2021 /* Initialize our rx_config data */
2022 iwl4965_connection_init_rx_config(priv);
2023 memcpy(priv->staging_rxon.node_addr, priv->mac_addr, ETH_ALEN);
2024 }
2025
2026 /* Configure Bluetooth device coexistence support */
2027 iwl4965_send_bt_config(priv);
2028
2029 iwl_reset_run_time_calib(priv);
2030
2031 /* Configure the adapter for unassociated operation */
2032 iwl4965_commit_rxon(priv);
2033
2034 /* At this point, the NIC is initialized and operational */
2035 iwl_rf_kill_ct_config(priv);
2036
2037 iwl_leds_register(priv);
2038
2039 IWL_DEBUG_INFO("ALIVE processing complete.\n");
2040 set_bit(STATUS_READY, &priv->status);
2041 wake_up_interruptible(&priv->wait_command_queue);
2042
2043 if (priv->error_recovering)
2044 iwl4965_error_recovery(priv);
2045
2046 iwl_power_update_mode(priv, 1);
2047 ieee80211_notify_mac(priv->hw, IEEE80211_NOTIFY_RE_ASSOC);
2048
2049 if (test_and_clear_bit(STATUS_MODE_PENDING, &priv->status))
2050 iwl4965_set_mode(priv, priv->iw_mode);
2051
2052 return;
2053
2054 restart:
2055 queue_work(priv->workqueue, &priv->restart);
2056 }
2057
2058 static void iwl_cancel_deferred_work(struct iwl_priv *priv);
2059
2060 static void __iwl4965_down(struct iwl_priv *priv)
2061 {
2062 unsigned long flags;
2063 int exit_pending = test_bit(STATUS_EXIT_PENDING, &priv->status);
2064
2065 IWL_DEBUG_INFO(DRV_NAME " is going down\n");
2066
2067 if (!exit_pending)
2068 set_bit(STATUS_EXIT_PENDING, &priv->status);
2069
2070 iwl_leds_unregister(priv);
2071
2072 iwl_clear_stations_table(priv);
2073
2074 /* Unblock any waiting calls */
2075 wake_up_interruptible_all(&priv->wait_command_queue);
2076
2077 /* Wipe out the EXIT_PENDING status bit if we are not actually
2078 * exiting the module */
2079 if (!exit_pending)
2080 clear_bit(STATUS_EXIT_PENDING, &priv->status);
2081
2082 /* stop and reset the on-board processor */
2083 iwl_write32(priv, CSR_RESET, CSR_RESET_REG_FLAG_NEVO_RESET);
2084
2085 /* tell the device to stop sending interrupts */
2086 spin_lock_irqsave(&priv->lock, flags);
2087 iwl4965_disable_interrupts(priv);
2088 spin_unlock_irqrestore(&priv->lock, flags);
2089 iwl_synchronize_irq(priv);
2090
2091 if (priv->mac80211_registered)
2092 ieee80211_stop_queues(priv->hw);
2093
2094 /* If we have not previously called iwl4965_init() then
2095 * clear all bits but the RF Kill and SUSPEND bits and return */
2096 if (!iwl_is_init(priv)) {
2097 priv->status = test_bit(STATUS_RF_KILL_HW, &priv->status) <<
2098 STATUS_RF_KILL_HW |
2099 test_bit(STATUS_RF_KILL_SW, &priv->status) <<
2100 STATUS_RF_KILL_SW |
2101 test_bit(STATUS_GEO_CONFIGURED, &priv->status) <<
2102 STATUS_GEO_CONFIGURED |
2103 test_bit(STATUS_IN_SUSPEND, &priv->status) <<
2104 STATUS_IN_SUSPEND |
2105 test_bit(STATUS_EXIT_PENDING, &priv->status) <<
2106 STATUS_EXIT_PENDING;
2107 goto exit;
2108 }
2109
2110 /* ...otherwise clear out all the status bits but the RF Kill and
2111 * SUSPEND bits and continue taking the NIC down. */
2112 priv->status &= test_bit(STATUS_RF_KILL_HW, &priv->status) <<
2113 STATUS_RF_KILL_HW |
2114 test_bit(STATUS_RF_KILL_SW, &priv->status) <<
2115 STATUS_RF_KILL_SW |
2116 test_bit(STATUS_GEO_CONFIGURED, &priv->status) <<
2117 STATUS_GEO_CONFIGURED |
2118 test_bit(STATUS_IN_SUSPEND, &priv->status) <<
2119 STATUS_IN_SUSPEND |
2120 test_bit(STATUS_FW_ERROR, &priv->status) <<
2121 STATUS_FW_ERROR |
2122 test_bit(STATUS_EXIT_PENDING, &priv->status) <<
2123 STATUS_EXIT_PENDING;
2124
2125 spin_lock_irqsave(&priv->lock, flags);
2126 iwl_clear_bit(priv, CSR_GP_CNTRL,
2127 CSR_GP_CNTRL_REG_FLAG_MAC_ACCESS_REQ);
2128 spin_unlock_irqrestore(&priv->lock, flags);
2129
2130 iwl_txq_ctx_stop(priv);
2131 iwl_rxq_stop(priv);
2132
2133 spin_lock_irqsave(&priv->lock, flags);
2134 if (!iwl_grab_nic_access(priv)) {
2135 iwl_write_prph(priv, APMG_CLK_DIS_REG,
2136 APMG_CLK_VAL_DMA_CLK_RQT);
2137 iwl_release_nic_access(priv);
2138 }
2139 spin_unlock_irqrestore(&priv->lock, flags);
2140
2141 udelay(5);
2142
2143 /* FIXME: apm_ops.suspend(priv) */
2144 priv->cfg->ops->lib->apm_ops.reset(priv);
2145 priv->cfg->ops->lib->free_shared_mem(priv);
2146
2147 exit:
2148 memset(&priv->card_alive, 0, sizeof(struct iwl_alive_resp));
2149
2150 if (priv->ibss_beacon)
2151 dev_kfree_skb(priv->ibss_beacon);
2152 priv->ibss_beacon = NULL;
2153
2154 /* clear out any free frames */
2155 iwl_clear_free_frames(priv);
2156 }
2157
2158 static void iwl4965_down(struct iwl_priv *priv)
2159 {
2160 mutex_lock(&priv->mutex);
2161 __iwl4965_down(priv);
2162 mutex_unlock(&priv->mutex);
2163
2164 iwl_cancel_deferred_work(priv);
2165 }
2166
2167 #define MAX_HW_RESTARTS 5
2168
2169 static int __iwl4965_up(struct iwl_priv *priv)
2170 {
2171 int i;
2172 int ret;
2173
2174 if (test_bit(STATUS_EXIT_PENDING, &priv->status)) {
2175 IWL_WARNING("Exit pending; will not bring the NIC up\n");
2176 return -EIO;
2177 }
2178
2179 if (!priv->ucode_data_backup.v_addr || !priv->ucode_data.v_addr) {
2180 IWL_ERROR("ucode not available for device bringup\n");
2181 return -EIO;
2182 }
2183
2184 /* If platform's RF_KILL switch is NOT set to KILL */
2185 if (iwl_read32(priv, CSR_GP_CNTRL) &
2186 CSR_GP_CNTRL_REG_FLAG_HW_RF_KILL_SW)
2187 clear_bit(STATUS_RF_KILL_HW, &priv->status);
2188 else
2189 set_bit(STATUS_RF_KILL_HW, &priv->status);
2190
2191 if (!test_bit(STATUS_IN_SUSPEND, &priv->status) &&
2192 iwl_is_rfkill(priv)) {
2193 IWL_WARNING("Radio disabled by %s RF Kill switch\n",
2194 test_bit(STATUS_RF_KILL_HW, &priv->status) ? "HW" : "SW");
2195 return -ENODEV;
2196 }
2197
2198 iwl_write32(priv, CSR_INT, 0xFFFFFFFF);
2199
2200 ret = priv->cfg->ops->lib->alloc_shared_mem(priv);
2201 if (ret) {
2202 IWL_ERROR("Unable to allocate shared memory\n");
2203 return ret;
2204 }
2205
2206 ret = iwl_hw_nic_init(priv);
2207 if (ret) {
2208 IWL_ERROR("Unable to init nic\n");
2209 return ret;
2210 }
2211
2212 /* make sure rfkill handshake bits are cleared */
2213 iwl_write32(priv, CSR_UCODE_DRV_GP1_CLR, CSR_UCODE_SW_BIT_RFKILL);
2214 iwl_write32(priv, CSR_UCODE_DRV_GP1_CLR,
2215 CSR_UCODE_DRV_GP1_BIT_CMD_BLOCKED);
2216
2217 /* clear (again), then enable host interrupts */
2218 iwl_write32(priv, CSR_INT, 0xFFFFFFFF);
2219 iwl4965_enable_interrupts(priv);
2220
2221 /* really make sure rfkill handshake bits are cleared */
2222 iwl_write32(priv, CSR_UCODE_DRV_GP1_CLR, CSR_UCODE_SW_BIT_RFKILL);
2223 iwl_write32(priv, CSR_UCODE_DRV_GP1_CLR, CSR_UCODE_SW_BIT_RFKILL);
2224
2225 /* Copy original ucode data image from disk into backup cache.
2226 * This will be used to initialize the on-board processor's
2227 * data SRAM for a clean start when the runtime program first loads. */
2228 memcpy(priv->ucode_data_backup.v_addr, priv->ucode_data.v_addr,
2229 priv->ucode_data.len);
2230
2231 /* We return success when we resume from suspend and rf_kill is on. */
2232 if (test_bit(STATUS_RF_KILL_HW, &priv->status) ||
2233 test_bit(STATUS_RF_KILL_SW, &priv->status))
2234 return 0;
2235
2236 for (i = 0; i < MAX_HW_RESTARTS; i++) {
2237
2238 iwl_clear_stations_table(priv);
2239
2240 /* load bootstrap state machine,
2241 * load bootstrap program into processor's memory,
2242 * prepare to load the "initialize" uCode */
2243 ret = priv->cfg->ops->lib->load_ucode(priv);
2244
2245 if (ret) {
2246 IWL_ERROR("Unable to set up bootstrap uCode: %d\n", ret);
2247 continue;
2248 }
2249
2250 /* Clear out the uCode error bit if it is set */
2251 clear_bit(STATUS_FW_ERROR, &priv->status);
2252
2253 /* start card; "initialize" will load runtime ucode */
2254 iwl4965_nic_start(priv);
2255
2256 IWL_DEBUG_INFO(DRV_NAME " is coming up\n");
2257
2258 return 0;
2259 }
2260
2261 set_bit(STATUS_EXIT_PENDING, &priv->status);
2262 __iwl4965_down(priv);
2263 clear_bit(STATUS_EXIT_PENDING, &priv->status);
2264
2265 /* tried to restart and config the device for as long as our
2266 * patience could withstand */
2267 IWL_ERROR("Unable to initialize device after %d attempts.\n", i);
2268 return -EIO;
2269 }
2270
2271
2272 /*****************************************************************************
2273 *
2274 * Workqueue callbacks
2275 *
2276 *****************************************************************************/
2277
2278 static void iwl_bg_init_alive_start(struct work_struct *data)
2279 {
2280 struct iwl_priv *priv =
2281 container_of(data, struct iwl_priv, init_alive_start.work);
2282
2283 if (test_bit(STATUS_EXIT_PENDING, &priv->status))
2284 return;
2285
2286 mutex_lock(&priv->mutex);
2287 priv->cfg->ops->lib->init_alive_start(priv);
2288 mutex_unlock(&priv->mutex);
2289 }
2290
2291 static void iwl_bg_alive_start(struct work_struct *data)
2292 {
2293 struct iwl_priv *priv =
2294 container_of(data, struct iwl_priv, alive_start.work);
2295
2296 if (test_bit(STATUS_EXIT_PENDING, &priv->status))
2297 return;
2298
2299 mutex_lock(&priv->mutex);
2300 iwl_alive_start(priv);
2301 mutex_unlock(&priv->mutex);
2302 }
2303
2304 static void iwl4965_bg_rf_kill(struct work_struct *work)
2305 {
2306 struct iwl_priv *priv = container_of(work, struct iwl_priv, rf_kill);
2307
2308 wake_up_interruptible(&priv->wait_command_queue);
2309
2310 if (test_bit(STATUS_EXIT_PENDING, &priv->status))
2311 return;
2312
2313 mutex_lock(&priv->mutex);
2314
2315 if (!iwl_is_rfkill(priv)) {
2316 IWL_DEBUG(IWL_DL_RF_KILL,
2317 "HW and/or SW RF Kill no longer active, restarting "
2318 "device\n");
2319 if (!test_bit(STATUS_EXIT_PENDING, &priv->status))
2320 queue_work(priv->workqueue, &priv->restart);
2321 } else {
2322 /* make sure mac80211 stop sending Tx frame */
2323 if (priv->mac80211_registered)
2324 ieee80211_stop_queues(priv->hw);
2325
2326 if (!test_bit(STATUS_RF_KILL_HW, &priv->status))
2327 IWL_DEBUG_RF_KILL("Can not turn radio back on - "
2328 "disabled by SW switch\n");
2329 else
2330 IWL_WARNING("Radio Frequency Kill Switch is On:\n"
2331 "Kill switch must be turned off for "
2332 "wireless networking to work.\n");
2333 }
2334 mutex_unlock(&priv->mutex);
2335 iwl_rfkill_set_hw_state(priv);
2336 }
2337
2338 static void iwl4965_bg_set_monitor(struct work_struct *work)
2339 {
2340 struct iwl_priv *priv = container_of(work,
2341 struct iwl_priv, set_monitor);
2342 int ret;
2343
2344 IWL_DEBUG(IWL_DL_STATE, "setting monitor mode\n");
2345
2346 mutex_lock(&priv->mutex);
2347
2348 ret = iwl4965_set_mode(priv, IEEE80211_IF_TYPE_MNTR);
2349
2350 if (ret) {
2351 if (ret == -EAGAIN)
2352 IWL_DEBUG(IWL_DL_STATE, "leave - not ready\n");
2353 else
2354 IWL_ERROR("iwl4965_set_mode() failed ret = %d\n", ret);
2355 }
2356
2357 mutex_unlock(&priv->mutex);
2358 }
2359
2360 static void iwl_bg_run_time_calib_work(struct work_struct *work)
2361 {
2362 struct iwl_priv *priv = container_of(work, struct iwl_priv,
2363 run_time_calib_work);
2364
2365 mutex_lock(&priv->mutex);
2366
2367 if (test_bit(STATUS_EXIT_PENDING, &priv->status) ||
2368 test_bit(STATUS_SCANNING, &priv->status)) {
2369 mutex_unlock(&priv->mutex);
2370 return;
2371 }
2372
2373 if (priv->start_calib) {
2374 iwl_chain_noise_calibration(priv, &priv->statistics);
2375
2376 iwl_sensitivity_calibration(priv, &priv->statistics);
2377 }
2378
2379 mutex_unlock(&priv->mutex);
2380 return;
2381 }
2382
2383 static void iwl4965_bg_up(struct work_struct *data)
2384 {
2385 struct iwl_priv *priv = container_of(data, struct iwl_priv, up);
2386
2387 if (test_bit(STATUS_EXIT_PENDING, &priv->status))
2388 return;
2389
2390 mutex_lock(&priv->mutex);
2391 __iwl4965_up(priv);
2392 mutex_unlock(&priv->mutex);
2393 iwl_rfkill_set_hw_state(priv);
2394 }
2395
2396 static void iwl4965_bg_restart(struct work_struct *data)
2397 {
2398 struct iwl_priv *priv = container_of(data, struct iwl_priv, restart);
2399
2400 if (test_bit(STATUS_EXIT_PENDING, &priv->status))
2401 return;
2402
2403 iwl4965_down(priv);
2404 queue_work(priv->workqueue, &priv->up);
2405 }
2406
2407 static void iwl4965_bg_rx_replenish(struct work_struct *data)
2408 {
2409 struct iwl_priv *priv =
2410 container_of(data, struct iwl_priv, rx_replenish);
2411
2412 if (test_bit(STATUS_EXIT_PENDING, &priv->status))
2413 return;
2414
2415 mutex_lock(&priv->mutex);
2416 iwl_rx_replenish(priv);
2417 mutex_unlock(&priv->mutex);
2418 }
2419
2420 #define IWL_DELAY_NEXT_SCAN (HZ*2)
2421
2422 static void iwl4965_post_associate(struct iwl_priv *priv)
2423 {
2424 struct ieee80211_conf *conf = NULL;
2425 int ret = 0;
2426 DECLARE_MAC_BUF(mac);
2427
2428 if (priv->iw_mode == IEEE80211_IF_TYPE_AP) {
2429 IWL_ERROR("%s Should not be called in AP mode\n", __FUNCTION__);
2430 return;
2431 }
2432
2433 IWL_DEBUG_ASSOC("Associated as %d to: %s\n",
2434 priv->assoc_id,
2435 print_mac(mac, priv->active_rxon.bssid_addr));
2436
2437
2438 if (test_bit(STATUS_EXIT_PENDING, &priv->status))
2439 return;
2440
2441
2442 if (!priv->vif || !priv->is_open)
2443 return;
2444
2445 iwl_scan_cancel_timeout(priv, 200);
2446
2447 conf = ieee80211_get_hw_conf(priv->hw);
2448
2449 priv->staging_rxon.filter_flags &= ~RXON_FILTER_ASSOC_MSK;
2450 iwl4965_commit_rxon(priv);
2451
2452 memset(&priv->rxon_timing, 0, sizeof(struct iwl4965_rxon_time_cmd));
2453 iwl4965_setup_rxon_timing(priv);
2454 ret = iwl_send_cmd_pdu(priv, REPLY_RXON_TIMING,
2455 sizeof(priv->rxon_timing), &priv->rxon_timing);
2456 if (ret)
2457 IWL_WARNING("REPLY_RXON_TIMING failed - "
2458 "Attempting to continue.\n");
2459
2460 priv->staging_rxon.filter_flags |= RXON_FILTER_ASSOC_MSK;
2461
2462 if (priv->current_ht_config.is_ht)
2463 iwl_set_rxon_ht(priv, &priv->current_ht_config);
2464
2465 iwl_set_rxon_chain(priv);
2466 priv->staging_rxon.assoc_id = cpu_to_le16(priv->assoc_id);
2467
2468 IWL_DEBUG_ASSOC("assoc id %d beacon interval %d\n",
2469 priv->assoc_id, priv->beacon_int);
2470
2471 if (priv->assoc_capability & WLAN_CAPABILITY_SHORT_PREAMBLE)
2472 priv->staging_rxon.flags |= RXON_FLG_SHORT_PREAMBLE_MSK;
2473 else
2474 priv->staging_rxon.flags &= ~RXON_FLG_SHORT_PREAMBLE_MSK;
2475
2476 if (priv->staging_rxon.flags & RXON_FLG_BAND_24G_MSK) {
2477 if (priv->assoc_capability & WLAN_CAPABILITY_SHORT_SLOT_TIME)
2478 priv->staging_rxon.flags |= RXON_FLG_SHORT_SLOT_MSK;
2479 else
2480 priv->staging_rxon.flags &= ~RXON_FLG_SHORT_SLOT_MSK;
2481
2482 if (priv->iw_mode == IEEE80211_IF_TYPE_IBSS)
2483 priv->staging_rxon.flags &= ~RXON_FLG_SHORT_SLOT_MSK;
2484
2485 }
2486
2487 iwl4965_commit_rxon(priv);
2488
2489 switch (priv->iw_mode) {
2490 case IEEE80211_IF_TYPE_STA:
2491 break;
2492
2493 case IEEE80211_IF_TYPE_IBSS:
2494
2495 /* assume default assoc id */
2496 priv->assoc_id = 1;
2497
2498 iwl_rxon_add_station(priv, priv->bssid, 0);
2499 iwl4965_send_beacon_cmd(priv);
2500
2501 break;
2502
2503 default:
2504 IWL_ERROR("%s Should not be called in %d mode\n",
2505 __FUNCTION__, priv->iw_mode);
2506 break;
2507 }
2508
2509 /* Enable Rx differential gain and sensitivity calibrations */
2510 iwl_chain_noise_reset(priv);
2511 priv->start_calib = 1;
2512
2513 if (priv->iw_mode == IEEE80211_IF_TYPE_IBSS)
2514 priv->assoc_station_added = 1;
2515
2516 iwl4965_activate_qos(priv, 0);
2517
2518 iwl_power_update_mode(priv, 0);
2519 /* we have just associated, don't start scan too early */
2520 priv->next_scan_jiffies = jiffies + IWL_DELAY_NEXT_SCAN;
2521 }
2522
2523 static int iwl4965_mac_config(struct ieee80211_hw *hw, struct ieee80211_conf *conf);
2524
2525 static void iwl_bg_scan_completed(struct work_struct *work)
2526 {
2527 struct iwl_priv *priv =
2528 container_of(work, struct iwl_priv, scan_completed);
2529
2530 IWL_DEBUG_SCAN("SCAN complete scan\n");
2531
2532 if (test_bit(STATUS_EXIT_PENDING, &priv->status))
2533 return;
2534
2535 if (test_bit(STATUS_CONF_PENDING, &priv->status))
2536 iwl4965_mac_config(priv->hw, ieee80211_get_hw_conf(priv->hw));
2537
2538 ieee80211_scan_completed(priv->hw);
2539
2540 /* Since setting the TXPOWER may have been deferred while
2541 * performing the scan, fire one off */
2542 mutex_lock(&priv->mutex);
2543 iwl_set_tx_power(priv, priv->tx_power_user_lmt, true);
2544 mutex_unlock(&priv->mutex);
2545 }
2546
2547 /*****************************************************************************
2548 *
2549 * mac80211 entry point functions
2550 *
2551 *****************************************************************************/
2552
2553 #define UCODE_READY_TIMEOUT (4 * HZ)
2554
2555 static int iwl4965_mac_start(struct ieee80211_hw *hw)
2556 {
2557 struct iwl_priv *priv = hw->priv;
2558 int ret;
2559
2560 IWL_DEBUG_MAC80211("enter\n");
2561
2562 if (pci_enable_device(priv->pci_dev)) {
2563 IWL_ERROR("Fail to pci_enable_device\n");
2564 return -ENODEV;
2565 }
2566 pci_restore_state(priv->pci_dev);
2567 pci_enable_msi(priv->pci_dev);
2568
2569 ret = request_irq(priv->pci_dev->irq, iwl4965_isr, IRQF_SHARED,
2570 DRV_NAME, priv);
2571 if (ret) {
2572 IWL_ERROR("Error allocating IRQ %d\n", priv->pci_dev->irq);
2573 goto out_disable_msi;
2574 }
2575
2576 /* we should be verifying the device is ready to be opened */
2577 mutex_lock(&priv->mutex);
2578
2579 memset(&priv->staging_rxon, 0, sizeof(struct iwl_rxon_cmd));
2580 /* fetch ucode file from disk, alloc and copy to bus-master buffers ...
2581 * ucode filename and max sizes are card-specific. */
2582
2583 if (!priv->ucode_code.len) {
2584 ret = iwl4965_read_ucode(priv);
2585 if (ret) {
2586 IWL_ERROR("Could not read microcode: %d\n", ret);
2587 mutex_unlock(&priv->mutex);
2588 goto out_release_irq;
2589 }
2590 }
2591
2592 ret = __iwl4965_up(priv);
2593
2594 mutex_unlock(&priv->mutex);
2595
2596 iwl_rfkill_set_hw_state(priv);
2597
2598 if (ret)
2599 goto out_release_irq;
2600
2601 IWL_DEBUG_INFO("Start UP work done.\n");
2602
2603 if (test_bit(STATUS_IN_SUSPEND, &priv->status))
2604 return 0;
2605
2606 /* Wait for START_ALIVE from Run Time ucode. Otherwise callbacks from
2607 * mac80211 will not be run successfully. */
2608 ret = wait_event_interruptible_timeout(priv->wait_command_queue,
2609 test_bit(STATUS_READY, &priv->status),
2610 UCODE_READY_TIMEOUT);
2611 if (!ret) {
2612 if (!test_bit(STATUS_READY, &priv->status)) {
2613 IWL_ERROR("START_ALIVE timeout after %dms.\n",
2614 jiffies_to_msecs(UCODE_READY_TIMEOUT));
2615 ret = -ETIMEDOUT;
2616 goto out_release_irq;
2617 }
2618 }
2619
2620 priv->is_open = 1;
2621 IWL_DEBUG_MAC80211("leave\n");
2622 return 0;
2623
2624 out_release_irq:
2625 free_irq(priv->pci_dev->irq, priv);
2626 out_disable_msi:
2627 pci_disable_msi(priv->pci_dev);
2628 pci_disable_device(priv->pci_dev);
2629 priv->is_open = 0;
2630 IWL_DEBUG_MAC80211("leave - failed\n");
2631 return ret;
2632 }
2633
2634 static void iwl4965_mac_stop(struct ieee80211_hw *hw)
2635 {
2636 struct iwl_priv *priv = hw->priv;
2637
2638 IWL_DEBUG_MAC80211("enter\n");
2639
2640 if (!priv->is_open) {
2641 IWL_DEBUG_MAC80211("leave - skip\n");
2642 return;
2643 }
2644
2645 priv->is_open = 0;
2646
2647 if (iwl_is_ready_rf(priv)) {
2648 /* stop mac, cancel any scan request and clear
2649 * RXON_FILTER_ASSOC_MSK BIT
2650 */
2651 mutex_lock(&priv->mutex);
2652 iwl_scan_cancel_timeout(priv, 100);
2653 mutex_unlock(&priv->mutex);
2654 }
2655
2656 iwl4965_down(priv);
2657
2658 flush_workqueue(priv->workqueue);
2659 free_irq(priv->pci_dev->irq, priv);
2660 pci_disable_msi(priv->pci_dev);
2661 pci_save_state(priv->pci_dev);
2662 pci_disable_device(priv->pci_dev);
2663
2664 IWL_DEBUG_MAC80211("leave\n");
2665 }
2666
2667 static int iwl4965_mac_tx(struct ieee80211_hw *hw, struct sk_buff *skb)
2668 {
2669 struct iwl_priv *priv = hw->priv;
2670
2671 IWL_DEBUG_MAC80211("enter\n");
2672
2673 if (priv->iw_mode == IEEE80211_IF_TYPE_MNTR) {
2674 IWL_DEBUG_MAC80211("leave - monitor\n");
2675 dev_kfree_skb_any(skb);
2676 return 0;
2677 }
2678
2679 IWL_DEBUG_TX("dev->xmit(%d bytes) at rate 0x%02x\n", skb->len,
2680 ieee80211_get_tx_rate(hw, IEEE80211_SKB_CB(skb))->bitrate);
2681
2682 if (iwl_tx_skb(priv, skb))
2683 dev_kfree_skb_any(skb);
2684
2685 IWL_DEBUG_MAC80211("leave\n");
2686 return 0;
2687 }
2688
2689 static int iwl4965_mac_add_interface(struct ieee80211_hw *hw,
2690 struct ieee80211_if_init_conf *conf)
2691 {
2692 struct iwl_priv *priv = hw->priv;
2693 unsigned long flags;
2694 DECLARE_MAC_BUF(mac);
2695
2696 IWL_DEBUG_MAC80211("enter: type %d\n", conf->type);
2697
2698 if (priv->vif) {
2699 IWL_DEBUG_MAC80211("leave - vif != NULL\n");
2700 return -EOPNOTSUPP;
2701 }
2702
2703 spin_lock_irqsave(&priv->lock, flags);
2704 priv->vif = conf->vif;
2705
2706 spin_unlock_irqrestore(&priv->lock, flags);
2707
2708 mutex_lock(&priv->mutex);
2709
2710 if (conf->mac_addr) {
2711 IWL_DEBUG_MAC80211("Set %s\n", print_mac(mac, conf->mac_addr));
2712 memcpy(priv->mac_addr, conf->mac_addr, ETH_ALEN);
2713 }
2714
2715 if (iwl4965_set_mode(priv, conf->type) == -EAGAIN)
2716 /* we are not ready, will run again when ready */
2717 set_bit(STATUS_MODE_PENDING, &priv->status);
2718
2719 mutex_unlock(&priv->mutex);
2720
2721 IWL_DEBUG_MAC80211("leave\n");
2722 return 0;
2723 }
2724
2725 /**
2726 * iwl4965_mac_config - mac80211 config callback
2727 *
2728 * We ignore conf->flags & IEEE80211_CONF_SHORT_SLOT_TIME since it seems to
2729 * be set inappropriately and the driver currently sets the hardware up to
2730 * use it whenever needed.
2731 */
2732 static int iwl4965_mac_config(struct ieee80211_hw *hw, struct ieee80211_conf *conf)
2733 {
2734 struct iwl_priv *priv = hw->priv;
2735 const struct iwl_channel_info *ch_info;
2736 unsigned long flags;
2737 int ret = 0;
2738 u16 channel;
2739
2740 mutex_lock(&priv->mutex);
2741 IWL_DEBUG_MAC80211("enter to channel %d\n", conf->channel->hw_value);
2742
2743 priv->add_radiotap = !!(conf->flags & IEEE80211_CONF_RADIOTAP);
2744
2745 if (conf->radio_enabled && iwl_radio_kill_sw_enable_radio(priv)) {
2746 IWL_DEBUG_MAC80211("leave - RF-KILL - waiting for uCode\n");
2747 goto out;
2748 }
2749
2750 if (!conf->radio_enabled)
2751 iwl_radio_kill_sw_disable_radio(priv);
2752
2753 if (!iwl_is_ready(priv)) {
2754 IWL_DEBUG_MAC80211("leave - not ready\n");
2755 ret = -EIO;
2756 goto out;
2757 }
2758
2759 if (unlikely(!priv->cfg->mod_params->disable_hw_scan &&
2760 test_bit(STATUS_SCANNING, &priv->status))) {
2761 IWL_DEBUG_MAC80211("leave - scanning\n");
2762 set_bit(STATUS_CONF_PENDING, &priv->status);
2763 mutex_unlock(&priv->mutex);
2764 return 0;
2765 }
2766
2767 channel = ieee80211_frequency_to_channel(conf->channel->center_freq);
2768 ch_info = iwl_get_channel_info(priv, conf->channel->band, channel);
2769 if (!is_channel_valid(ch_info)) {
2770 IWL_DEBUG_MAC80211("leave - invalid channel\n");
2771 ret = -EINVAL;
2772 goto out;
2773 }
2774
2775 if (priv->iw_mode == IEEE80211_IF_TYPE_IBSS &&
2776 !is_channel_ibss(ch_info)) {
2777 IWL_ERROR("channel %d in band %d not IBSS channel\n",
2778 conf->channel->hw_value, conf->channel->band);
2779 ret = -EINVAL;
2780 goto out;
2781 }
2782
2783 spin_lock_irqsave(&priv->lock, flags);
2784
2785 /* if we are switching from ht to 2.4 clear flags
2786 * from any ht related info since 2.4 does not
2787 * support ht */
2788 if ((le16_to_cpu(priv->staging_rxon.channel) != channel)
2789 #ifdef IEEE80211_CONF_CHANNEL_SWITCH
2790 && !(conf->flags & IEEE80211_CONF_CHANNEL_SWITCH)
2791 #endif
2792 )
2793 priv->staging_rxon.flags = 0;
2794
2795 iwl_set_rxon_channel(priv, conf->channel->band, channel);
2796
2797 iwl_set_flags_for_band(priv, conf->channel->band);
2798
2799 /* The list of supported rates and rate mask can be different
2800 * for each band; since the band may have changed, reset
2801 * the rate mask to what mac80211 lists */
2802 iwl4965_set_rate(priv);
2803
2804 spin_unlock_irqrestore(&priv->lock, flags);
2805
2806 #ifdef IEEE80211_CONF_CHANNEL_SWITCH
2807 if (conf->flags & IEEE80211_CONF_CHANNEL_SWITCH) {
2808 iwl4965_hw_channel_switch(priv, conf->channel);
2809 goto out;
2810 }
2811 #endif
2812
2813 if (!conf->radio_enabled) {
2814 IWL_DEBUG_MAC80211("leave - radio disabled\n");
2815 goto out;
2816 }
2817
2818 if (iwl_is_rfkill(priv)) {
2819 IWL_DEBUG_MAC80211("leave - RF kill\n");
2820 ret = -EIO;
2821 goto out;
2822 }
2823
2824 IWL_DEBUG_MAC80211("TX Power old=%d new=%d\n",
2825 priv->tx_power_user_lmt, conf->power_level);
2826
2827 iwl_set_tx_power(priv, conf->power_level, false);
2828
2829 iwl4965_set_rate(priv);
2830
2831 if (memcmp(&priv->active_rxon,
2832 &priv->staging_rxon, sizeof(priv->staging_rxon)))
2833 iwl4965_commit_rxon(priv);
2834 else
2835 IWL_DEBUG_INFO("No re-sending same RXON configuration.\n");
2836
2837 IWL_DEBUG_MAC80211("leave\n");
2838
2839 out:
2840 clear_bit(STATUS_CONF_PENDING, &priv->status);
2841 mutex_unlock(&priv->mutex);
2842 return ret;
2843 }
2844
2845 static void iwl4965_config_ap(struct iwl_priv *priv)
2846 {
2847 int ret = 0;
2848
2849 if (test_bit(STATUS_EXIT_PENDING, &priv->status))
2850 return;
2851
2852 /* The following should be done only at AP bring up */
2853 if (!(iwl_is_associated(priv))) {
2854
2855 /* RXON - unassoc (to set timing command) */
2856 priv->staging_rxon.filter_flags &= ~RXON_FILTER_ASSOC_MSK;
2857 iwl4965_commit_rxon(priv);
2858
2859 /* RXON Timing */
2860 memset(&priv->rxon_timing, 0, sizeof(struct iwl4965_rxon_time_cmd));
2861 iwl4965_setup_rxon_timing(priv);
2862 ret = iwl_send_cmd_pdu(priv, REPLY_RXON_TIMING,
2863 sizeof(priv->rxon_timing), &priv->rxon_timing);
2864 if (ret)
2865 IWL_WARNING("REPLY_RXON_TIMING failed - "
2866 "Attempting to continue.\n");
2867
2868 iwl_set_rxon_chain(priv);
2869
2870 /* FIXME: what should be the assoc_id for AP? */
2871 priv->staging_rxon.assoc_id = cpu_to_le16(priv->assoc_id);
2872 if (priv->assoc_capability & WLAN_CAPABILITY_SHORT_PREAMBLE)
2873 priv->staging_rxon.flags |=
2874 RXON_FLG_SHORT_PREAMBLE_MSK;
2875 else
2876 priv->staging_rxon.flags &=
2877 ~RXON_FLG_SHORT_PREAMBLE_MSK;
2878
2879 if (priv->staging_rxon.flags & RXON_FLG_BAND_24G_MSK) {
2880 if (priv->assoc_capability &
2881 WLAN_CAPABILITY_SHORT_SLOT_TIME)
2882 priv->staging_rxon.flags |=
2883 RXON_FLG_SHORT_SLOT_MSK;
2884 else
2885 priv->staging_rxon.flags &=
2886 ~RXON_FLG_SHORT_SLOT_MSK;
2887
2888 if (priv->iw_mode == IEEE80211_IF_TYPE_IBSS)
2889 priv->staging_rxon.flags &=
2890 ~RXON_FLG_SHORT_SLOT_MSK;
2891 }
2892 /* restore RXON assoc */
2893 priv->staging_rxon.filter_flags |= RXON_FILTER_ASSOC_MSK;
2894 iwl4965_commit_rxon(priv);
2895 iwl4965_activate_qos(priv, 1);
2896 iwl_rxon_add_station(priv, iwl_bcast_addr, 0);
2897 }
2898 iwl4965_send_beacon_cmd(priv);
2899
2900 /* FIXME - we need to add code here to detect a totally new
2901 * configuration, reset the AP, unassoc, rxon timing, assoc,
2902 * clear sta table, add BCAST sta... */
2903 }
2904
2905 /* temporary */
2906 static int iwl4965_mac_beacon_update(struct ieee80211_hw *hw, struct sk_buff *skb);
2907
2908 static int iwl4965_mac_config_interface(struct ieee80211_hw *hw,
2909 struct ieee80211_vif *vif,
2910 struct ieee80211_if_conf *conf)
2911 {
2912 struct iwl_priv *priv = hw->priv;
2913 DECLARE_MAC_BUF(mac);
2914 unsigned long flags;
2915 int rc;
2916
2917 if (conf == NULL)
2918 return -EIO;
2919
2920 if (priv->vif != vif) {
2921 IWL_DEBUG_MAC80211("leave - priv->vif != vif\n");
2922 return 0;
2923 }
2924
2925 if (priv->iw_mode == IEEE80211_IF_TYPE_IBSS &&
2926 conf->changed & IEEE80211_IFCC_BEACON) {
2927 struct sk_buff *beacon = ieee80211_beacon_get(hw, vif);
2928 if (!beacon)
2929 return -ENOMEM;
2930 rc = iwl4965_mac_beacon_update(hw, beacon);
2931 if (rc)
2932 return rc;
2933 }
2934
2935 if ((priv->iw_mode == IEEE80211_IF_TYPE_AP) &&
2936 (!conf->ssid_len)) {
2937 IWL_DEBUG_MAC80211
2938 ("Leaving in AP mode because HostAPD is not ready.\n");
2939 return 0;
2940 }
2941
2942 if (!iwl_is_alive(priv))
2943 return -EAGAIN;
2944
2945 mutex_lock(&priv->mutex);
2946
2947 if (conf->bssid)
2948 IWL_DEBUG_MAC80211("bssid: %s\n",
2949 print_mac(mac, conf->bssid));
2950
2951 /*
2952 * very dubious code was here; the probe filtering flag is never set:
2953 *
2954 if (unlikely(test_bit(STATUS_SCANNING, &priv->status)) &&
2955 !(priv->hw->flags & IEEE80211_HW_NO_PROBE_FILTERING)) {
2956 */
2957
2958 if (priv->iw_mode == IEEE80211_IF_TYPE_AP) {
2959 if (!conf->bssid) {
2960 conf->bssid = priv->mac_addr;
2961 memcpy(priv->bssid, priv->mac_addr, ETH_ALEN);
2962 IWL_DEBUG_MAC80211("bssid was set to: %s\n",
2963 print_mac(mac, conf->bssid));
2964 }
2965 if (priv->ibss_beacon)
2966 dev_kfree_skb(priv->ibss_beacon);
2967
2968 priv->ibss_beacon = ieee80211_beacon_get(hw, vif);
2969 }
2970
2971 if (iwl_is_rfkill(priv))
2972 goto done;
2973
2974 if (conf->bssid && !is_zero_ether_addr(conf->bssid) &&
2975 !is_multicast_ether_addr(conf->bssid)) {
2976 /* If there is currently a HW scan going on in the background
2977 * then we need to cancel it else the RXON below will fail. */
2978 if (iwl_scan_cancel_timeout(priv, 100)) {
2979 IWL_WARNING("Aborted scan still in progress "
2980 "after 100ms\n");
2981 IWL_DEBUG_MAC80211("leaving - scan abort failed.\n");
2982 mutex_unlock(&priv->mutex);
2983 return -EAGAIN;
2984 }
2985 memcpy(priv->staging_rxon.bssid_addr, conf->bssid, ETH_ALEN);
2986
2987 /* TODO: Audit driver for usage of these members and see
2988 * if mac80211 deprecates them (priv->bssid looks like it
2989 * shouldn't be there, but I haven't scanned the IBSS code
2990 * to verify) - jpk */
2991 memcpy(priv->bssid, conf->bssid, ETH_ALEN);
2992
2993 if (priv->iw_mode == IEEE80211_IF_TYPE_AP)
2994 iwl4965_config_ap(priv);
2995 else {
2996 rc = iwl4965_commit_rxon(priv);
2997 if ((priv->iw_mode == IEEE80211_IF_TYPE_STA) && rc)
2998 iwl_rxon_add_station(
2999 priv, priv->active_rxon.bssid_addr, 1);
3000 }
3001
3002 } else {
3003 iwl_scan_cancel_timeout(priv, 100);
3004 priv->staging_rxon.filter_flags &= ~RXON_FILTER_ASSOC_MSK;
3005 iwl4965_commit_rxon(priv);
3006 }
3007
3008 done:
3009 spin_lock_irqsave(&priv->lock, flags);
3010 if (!conf->ssid_len)
3011 memset(priv->essid, 0, IW_ESSID_MAX_SIZE);
3012 else
3013 memcpy(priv->essid, conf->ssid, conf->ssid_len);
3014
3015 priv->essid_len = conf->ssid_len;
3016 spin_unlock_irqrestore(&priv->lock, flags);
3017
3018 IWL_DEBUG_MAC80211("leave\n");
3019 mutex_unlock(&priv->mutex);
3020
3021 return 0;
3022 }
3023
3024 static void iwl4965_configure_filter(struct ieee80211_hw *hw,
3025 unsigned int changed_flags,
3026 unsigned int *total_flags,
3027 int mc_count, struct dev_addr_list *mc_list)
3028 {
3029 struct iwl_priv *priv = hw->priv;
3030
3031 if (changed_flags & (*total_flags) & FIF_OTHER_BSS) {
3032 IWL_DEBUG_MAC80211("Enter: type %d (0x%x, 0x%x)\n",
3033 IEEE80211_IF_TYPE_MNTR,
3034 changed_flags, *total_flags);
3035 /* queue work 'cuz mac80211 is holding a lock which
3036 * prevents us from issuing (synchronous) f/w cmds */
3037 queue_work(priv->workqueue, &priv->set_monitor);
3038 }
3039 *total_flags &= FIF_OTHER_BSS | FIF_ALLMULTI |
3040 FIF_BCN_PRBRESP_PROMISC | FIF_CONTROL;
3041 }
3042
3043 static void iwl4965_mac_remove_interface(struct ieee80211_hw *hw,
3044 struct ieee80211_if_init_conf *conf)
3045 {
3046 struct iwl_priv *priv = hw->priv;
3047
3048 IWL_DEBUG_MAC80211("enter\n");
3049
3050 mutex_lock(&priv->mutex);
3051
3052 if (iwl_is_ready_rf(priv)) {
3053 iwl_scan_cancel_timeout(priv, 100);
3054 priv->staging_rxon.filter_flags &= ~RXON_FILTER_ASSOC_MSK;
3055 iwl4965_commit_rxon(priv);
3056 }
3057 if (priv->vif == conf->vif) {
3058 priv->vif = NULL;
3059 memset(priv->bssid, 0, ETH_ALEN);
3060 memset(priv->essid, 0, IW_ESSID_MAX_SIZE);
3061 priv->essid_len = 0;
3062 }
3063 mutex_unlock(&priv->mutex);
3064
3065 IWL_DEBUG_MAC80211("leave\n");
3066
3067 }
3068
3069 #define IWL_DELAY_NEXT_SCAN_AFTER_ASSOC (HZ*6)
3070 static void iwl4965_bss_info_changed(struct ieee80211_hw *hw,
3071 struct ieee80211_vif *vif,
3072 struct ieee80211_bss_conf *bss_conf,
3073 u32 changes)
3074 {
3075 struct iwl_priv *priv = hw->priv;
3076
3077 IWL_DEBUG_MAC80211("changes = 0x%X\n", changes);
3078
3079 if (changes & BSS_CHANGED_ERP_PREAMBLE) {
3080 IWL_DEBUG_MAC80211("ERP_PREAMBLE %d\n",
3081 bss_conf->use_short_preamble);
3082 if (bss_conf->use_short_preamble)
3083 priv->staging_rxon.flags |= RXON_FLG_SHORT_PREAMBLE_MSK;
3084 else
3085 priv->staging_rxon.flags &= ~RXON_FLG_SHORT_PREAMBLE_MSK;
3086 }
3087
3088 if (changes & BSS_CHANGED_ERP_CTS_PROT) {
3089 IWL_DEBUG_MAC80211("ERP_CTS %d\n", bss_conf->use_cts_prot);
3090 if (bss_conf->use_cts_prot && (priv->band != IEEE80211_BAND_5GHZ))
3091 priv->staging_rxon.flags |= RXON_FLG_TGG_PROTECT_MSK;
3092 else
3093 priv->staging_rxon.flags &= ~RXON_FLG_TGG_PROTECT_MSK;
3094 }
3095
3096 if (changes & BSS_CHANGED_HT) {
3097 IWL_DEBUG_MAC80211("HT %d\n", bss_conf->assoc_ht);
3098 iwl4965_ht_conf(priv, bss_conf);
3099 iwl_set_rxon_chain(priv);
3100 }
3101
3102 if (changes & BSS_CHANGED_ASSOC) {
3103 IWL_DEBUG_MAC80211("ASSOC %d\n", bss_conf->assoc);
3104 /* This should never happen as this function should
3105 * never be called from interrupt context. */
3106 if (WARN_ON_ONCE(in_interrupt()))
3107 return;
3108 if (bss_conf->assoc) {
3109 priv->assoc_id = bss_conf->aid;
3110 priv->beacon_int = bss_conf->beacon_int;
3111 priv->timestamp = bss_conf->timestamp;
3112 priv->assoc_capability = bss_conf->assoc_capability;
3113 priv->next_scan_jiffies = jiffies +
3114 IWL_DELAY_NEXT_SCAN_AFTER_ASSOC;
3115 mutex_lock(&priv->mutex);
3116 iwl4965_post_associate(priv);
3117 mutex_unlock(&priv->mutex);
3118 } else {
3119 priv->assoc_id = 0;
3120 IWL_DEBUG_MAC80211("DISASSOC %d\n", bss_conf->assoc);
3121 }
3122 } else if (changes && iwl_is_associated(priv) && priv->assoc_id) {
3123 IWL_DEBUG_MAC80211("Associated Changes %d\n", changes);
3124 iwl_send_rxon_assoc(priv);
3125 }
3126
3127 }
3128
3129 static int iwl4965_mac_hw_scan(struct ieee80211_hw *hw, u8 *ssid, size_t len)
3130 {
3131 int rc = 0;
3132 unsigned long flags;
3133 struct iwl_priv *priv = hw->priv;
3134
3135 IWL_DEBUG_MAC80211("enter\n");
3136
3137 mutex_lock(&priv->mutex);
3138 spin_lock_irqsave(&priv->lock, flags);
3139
3140 if (!iwl_is_ready_rf(priv)) {
3141 rc = -EIO;
3142 IWL_DEBUG_MAC80211("leave - not ready or exit pending\n");
3143 goto out_unlock;
3144 }
3145
3146 if (priv->iw_mode == IEEE80211_IF_TYPE_AP) { /* APs don't scan */
3147 rc = -EIO;
3148 IWL_ERROR("ERROR: APs don't scan\n");
3149 goto out_unlock;
3150 }
3151
3152 /* we don't schedule scan within next_scan_jiffies period */
3153 if (priv->next_scan_jiffies &&
3154 time_after(priv->next_scan_jiffies, jiffies)) {
3155 rc = -EAGAIN;
3156 goto out_unlock;
3157 }
3158 /* if we just finished scan ask for delay */
3159 if (priv->last_scan_jiffies && time_after(priv->last_scan_jiffies +
3160 IWL_DELAY_NEXT_SCAN, jiffies)) {
3161 rc = -EAGAIN;
3162 goto out_unlock;
3163 }
3164 if (len) {
3165 IWL_DEBUG_SCAN("direct scan for %s [%d]\n ",
3166 iwl_escape_essid(ssid, len), (int)len);
3167
3168 priv->one_direct_scan = 1;
3169 priv->direct_ssid_len = (u8)
3170 min((u8) len, (u8) IW_ESSID_MAX_SIZE);
3171 memcpy(priv->direct_ssid, ssid, priv->direct_ssid_len);
3172 } else
3173 priv->one_direct_scan = 0;
3174
3175 rc = iwl_scan_initiate(priv);
3176
3177 IWL_DEBUG_MAC80211("leave\n");
3178
3179 out_unlock:
3180 spin_unlock_irqrestore(&priv->lock, flags);
3181 mutex_unlock(&priv->mutex);
3182
3183 return rc;
3184 }
3185
3186 static void iwl4965_mac_update_tkip_key(struct ieee80211_hw *hw,
3187 struct ieee80211_key_conf *keyconf, const u8 *addr,
3188 u32 iv32, u16 *phase1key)
3189 {
3190 struct iwl_priv *priv = hw->priv;
3191 u8 sta_id = IWL_INVALID_STATION;
3192 unsigned long flags;
3193 __le16 key_flags = 0;
3194 int i;
3195 DECLARE_MAC_BUF(mac);
3196
3197 IWL_DEBUG_MAC80211("enter\n");
3198
3199 sta_id = iwl_find_station(priv, addr);
3200 if (sta_id == IWL_INVALID_STATION) {
3201 IWL_DEBUG_MAC80211("leave - %s not in station map.\n",
3202 print_mac(mac, addr));
3203 return;
3204 }
3205
3206 iwl_scan_cancel_timeout(priv, 100);
3207
3208 key_flags |= (STA_KEY_FLG_TKIP | STA_KEY_FLG_MAP_KEY_MSK);
3209 key_flags |= cpu_to_le16(keyconf->keyidx << STA_KEY_FLG_KEYID_POS);
3210 key_flags &= ~STA_KEY_FLG_INVALID;
3211
3212 if (sta_id == priv->hw_params.bcast_sta_id)
3213 key_flags |= STA_KEY_MULTICAST_MSK;
3214
3215 spin_lock_irqsave(&priv->sta_lock, flags);
3216
3217 priv->stations[sta_id].sta.key.key_flags = key_flags;
3218 priv->stations[sta_id].sta.key.tkip_rx_tsc_byte2 = (u8) iv32;
3219
3220 for (i = 0; i < 5; i++)
3221 priv->stations[sta_id].sta.key.tkip_rx_ttak[i] =
3222 cpu_to_le16(phase1key[i]);
3223
3224 priv->stations[sta_id].sta.sta.modify_mask = STA_MODIFY_KEY_MASK;
3225 priv->stations[sta_id].sta.mode = STA_CONTROL_MODIFY_MSK;
3226
3227 iwl_send_add_sta(priv, &priv->stations[sta_id].sta, CMD_ASYNC);
3228
3229 spin_unlock_irqrestore(&priv->sta_lock, flags);
3230
3231 IWL_DEBUG_MAC80211("leave\n");
3232 }
3233
3234 static int iwl4965_mac_set_key(struct ieee80211_hw *hw, enum set_key_cmd cmd,
3235 const u8 *local_addr, const u8 *addr,
3236 struct ieee80211_key_conf *key)
3237 {
3238 struct iwl_priv *priv = hw->priv;
3239 DECLARE_MAC_BUF(mac);
3240 int ret = 0;
3241 u8 sta_id = IWL_INVALID_STATION;
3242 u8 is_default_wep_key = 0;
3243
3244 IWL_DEBUG_MAC80211("enter\n");
3245
3246 if (priv->hw_params.sw_crypto) {
3247 IWL_DEBUG_MAC80211("leave - hwcrypto disabled\n");
3248 return -EOPNOTSUPP;
3249 }
3250
3251 if (is_zero_ether_addr(addr))
3252 /* only support pairwise keys */
3253 return -EOPNOTSUPP;
3254
3255 sta_id = iwl_find_station(priv, addr);
3256 if (sta_id == IWL_INVALID_STATION) {
3257 IWL_DEBUG_MAC80211("leave - %s not in station map.\n",
3258 print_mac(mac, addr));
3259 return -EINVAL;
3260
3261 }
3262
3263 mutex_lock(&priv->mutex);
3264 iwl_scan_cancel_timeout(priv, 100);
3265 mutex_unlock(&priv->mutex);
3266
3267 /* If we are getting WEP group key and we didn't receive any key mapping
3268 * so far, we are in legacy wep mode (group key only), otherwise we are
3269 * in 1X mode.
3270 * In legacy wep mode, we use another host command to the uCode */
3271 if (key->alg == ALG_WEP && sta_id == priv->hw_params.bcast_sta_id &&
3272 priv->iw_mode != IEEE80211_IF_TYPE_AP) {
3273 if (cmd == SET_KEY)
3274 is_default_wep_key = !priv->key_mapping_key;
3275 else
3276 is_default_wep_key =
3277 (key->hw_key_idx == HW_KEY_DEFAULT);
3278 }
3279
3280 switch (cmd) {
3281 case SET_KEY:
3282 if (is_default_wep_key)
3283 ret = iwl_set_default_wep_key(priv, key);
3284 else
3285 ret = iwl_set_dynamic_key(priv, key, sta_id);
3286
3287 IWL_DEBUG_MAC80211("enable hwcrypto key\n");
3288 break;
3289 case DISABLE_KEY:
3290 if (is_default_wep_key)
3291 ret = iwl_remove_default_wep_key(priv, key);
3292 else
3293 ret = iwl_remove_dynamic_key(priv, key, sta_id);
3294
3295 IWL_DEBUG_MAC80211("disable hwcrypto key\n");
3296 break;
3297 default:
3298 ret = -EINVAL;
3299 }
3300
3301 IWL_DEBUG_MAC80211("leave\n");
3302
3303 return ret;
3304 }
3305
3306 static int iwl4965_mac_conf_tx(struct ieee80211_hw *hw, u16 queue,
3307 const struct ieee80211_tx_queue_params *params)
3308 {
3309 struct iwl_priv *priv = hw->priv;
3310 unsigned long flags;
3311 int q;
3312
3313 IWL_DEBUG_MAC80211("enter\n");
3314
3315 if (!iwl_is_ready_rf(priv)) {
3316 IWL_DEBUG_MAC80211("leave - RF not ready\n");
3317 return -EIO;
3318 }
3319
3320 if (queue >= AC_NUM) {
3321 IWL_DEBUG_MAC80211("leave - queue >= AC_NUM %d\n", queue);
3322 return 0;
3323 }
3324
3325 if (!priv->qos_data.qos_enable) {
3326 priv->qos_data.qos_active = 0;
3327 IWL_DEBUG_MAC80211("leave - qos not enabled\n");
3328 return 0;
3329 }
3330 q = AC_NUM - 1 - queue;
3331
3332 spin_lock_irqsave(&priv->lock, flags);
3333
3334 priv->qos_data.def_qos_parm.ac[q].cw_min = cpu_to_le16(params->cw_min);
3335 priv->qos_data.def_qos_parm.ac[q].cw_max = cpu_to_le16(params->cw_max);
3336 priv->qos_data.def_qos_parm.ac[q].aifsn = params->aifs;
3337 priv->qos_data.def_qos_parm.ac[q].edca_txop =
3338 cpu_to_le16((params->txop * 32));
3339
3340 priv->qos_data.def_qos_parm.ac[q].reserved1 = 0;
3341 priv->qos_data.qos_active = 1;
3342
3343 spin_unlock_irqrestore(&priv->lock, flags);
3344
3345 mutex_lock(&priv->mutex);
3346 if (priv->iw_mode == IEEE80211_IF_TYPE_AP)
3347 iwl4965_activate_qos(priv, 1);
3348 else if (priv->assoc_id && iwl_is_associated(priv))
3349 iwl4965_activate_qos(priv, 0);
3350
3351 mutex_unlock(&priv->mutex);
3352
3353 IWL_DEBUG_MAC80211("leave\n");
3354 return 0;
3355 }
3356
3357 static int iwl4965_mac_get_tx_stats(struct ieee80211_hw *hw,
3358 struct ieee80211_tx_queue_stats *stats)
3359 {
3360 struct iwl_priv *priv = hw->priv;
3361 int i, avail;
3362 struct iwl_tx_queue *txq;
3363 struct iwl_queue *q;
3364 unsigned long flags;
3365
3366 IWL_DEBUG_MAC80211("enter\n");
3367
3368 if (!iwl_is_ready_rf(priv)) {
3369 IWL_DEBUG_MAC80211("leave - RF not ready\n");
3370 return -EIO;
3371 }
3372
3373 spin_lock_irqsave(&priv->lock, flags);
3374
3375 for (i = 0; i < AC_NUM; i++) {
3376 txq = &priv->txq[i];
3377 q = &txq->q;
3378 avail = iwl_queue_space(q);
3379
3380 stats[i].len = q->n_window - avail;
3381 stats[i].limit = q->n_window - q->high_mark;
3382 stats[i].count = q->n_window;
3383
3384 }
3385 spin_unlock_irqrestore(&priv->lock, flags);
3386
3387 IWL_DEBUG_MAC80211("leave\n");
3388
3389 return 0;
3390 }
3391
3392 static int iwl4965_mac_get_stats(struct ieee80211_hw *hw,
3393 struct ieee80211_low_level_stats *stats)
3394 {
3395 struct iwl_priv *priv = hw->priv;
3396
3397 priv = hw->priv;
3398 IWL_DEBUG_MAC80211("enter\n");
3399 IWL_DEBUG_MAC80211("leave\n");
3400
3401 return 0;
3402 }
3403
3404 static void iwl4965_mac_reset_tsf(struct ieee80211_hw *hw)
3405 {
3406 struct iwl_priv *priv = hw->priv;
3407 unsigned long flags;
3408
3409 mutex_lock(&priv->mutex);
3410 IWL_DEBUG_MAC80211("enter\n");
3411
3412 spin_lock_irqsave(&priv->lock, flags);
3413 memset(&priv->current_ht_config, 0, sizeof(struct iwl_ht_info));
3414 spin_unlock_irqrestore(&priv->lock, flags);
3415
3416 iwl_reset_qos(priv);
3417
3418 spin_lock_irqsave(&priv->lock, flags);
3419 priv->assoc_id = 0;
3420 priv->assoc_capability = 0;
3421 priv->assoc_station_added = 0;
3422
3423 /* new association get rid of ibss beacon skb */
3424 if (priv->ibss_beacon)
3425 dev_kfree_skb(priv->ibss_beacon);
3426
3427 priv->ibss_beacon = NULL;
3428
3429 priv->beacon_int = priv->hw->conf.beacon_int;
3430 priv->timestamp = 0;
3431 if ((priv->iw_mode == IEEE80211_IF_TYPE_STA))
3432 priv->beacon_int = 0;
3433
3434 spin_unlock_irqrestore(&priv->lock, flags);
3435
3436 if (!iwl_is_ready_rf(priv)) {
3437 IWL_DEBUG_MAC80211("leave - not ready\n");
3438 mutex_unlock(&priv->mutex);
3439 return;
3440 }
3441
3442 /* we are restarting association process
3443 * clear RXON_FILTER_ASSOC_MSK bit
3444 */
3445 if (priv->iw_mode != IEEE80211_IF_TYPE_AP) {
3446 iwl_scan_cancel_timeout(priv, 100);
3447 priv->staging_rxon.filter_flags &= ~RXON_FILTER_ASSOC_MSK;
3448 iwl4965_commit_rxon(priv);
3449 }
3450
3451 iwl_power_update_mode(priv, 0);
3452
3453 /* Per mac80211.h: This is only used in IBSS mode... */
3454 if (priv->iw_mode != IEEE80211_IF_TYPE_IBSS) {
3455
3456 IWL_DEBUG_MAC80211("leave - not in IBSS\n");
3457 mutex_unlock(&priv->mutex);
3458 return;
3459 }
3460
3461 iwl4965_set_rate(priv);
3462
3463 mutex_unlock(&priv->mutex);
3464
3465 IWL_DEBUG_MAC80211("leave\n");
3466 }
3467
3468 static int iwl4965_mac_beacon_update(struct ieee80211_hw *hw, struct sk_buff *skb)
3469 {
3470 struct iwl_priv *priv = hw->priv;
3471 unsigned long flags;
3472 __le64 timestamp;
3473
3474 mutex_lock(&priv->mutex);
3475 IWL_DEBUG_MAC80211("enter\n");
3476
3477 if (!iwl_is_ready_rf(priv)) {
3478 IWL_DEBUG_MAC80211("leave - RF not ready\n");
3479 mutex_unlock(&priv->mutex);
3480 return -EIO;
3481 }
3482
3483 if (priv->iw_mode != IEEE80211_IF_TYPE_IBSS) {
3484 IWL_DEBUG_MAC80211("leave - not IBSS\n");
3485 mutex_unlock(&priv->mutex);
3486 return -EIO;
3487 }
3488
3489 spin_lock_irqsave(&priv->lock, flags);
3490
3491 if (priv->ibss_beacon)
3492 dev_kfree_skb(priv->ibss_beacon);
3493
3494 priv->ibss_beacon = skb;
3495
3496 priv->assoc_id = 0;
3497 timestamp = ((struct ieee80211_mgmt *)skb->data)->u.beacon.timestamp;
3498 priv->timestamp = le64_to_cpu(timestamp) + (priv->beacon_int * 1000);
3499
3500 IWL_DEBUG_MAC80211("leave\n");
3501 spin_unlock_irqrestore(&priv->lock, flags);
3502
3503 iwl_reset_qos(priv);
3504
3505 iwl4965_post_associate(priv);
3506
3507 mutex_unlock(&priv->mutex);
3508
3509 return 0;
3510 }
3511
3512 /*****************************************************************************
3513 *
3514 * sysfs attributes
3515 *
3516 *****************************************************************************/
3517
3518 #ifdef CONFIG_IWLWIFI_DEBUG
3519
3520 /*
3521 * The following adds a new attribute to the sysfs representation
3522 * of this device driver (i.e. a new file in /sys/bus/pci/drivers/iwl/)
3523 * used for controlling the debug level.
3524 *
3525 * See the level definitions in iwl for details.
3526 */
3527
3528 static ssize_t show_debug_level(struct device *d,
3529 struct device_attribute *attr, char *buf)
3530 {
3531 struct iwl_priv *priv = d->driver_data;
3532
3533 return sprintf(buf, "0x%08X\n", priv->debug_level);
3534 }
3535 static ssize_t store_debug_level(struct device *d,
3536 struct device_attribute *attr,
3537 const char *buf, size_t count)
3538 {
3539 struct iwl_priv *priv = d->driver_data;
3540 char *p = (char *)buf;
3541 u32 val;
3542
3543 val = simple_strtoul(p, &p, 0);
3544 if (p == buf)
3545 printk(KERN_INFO DRV_NAME
3546 ": %s is not in hex or decimal form.\n", buf);
3547 else
3548 priv->debug_level = val;
3549
3550 return strnlen(buf, count);
3551 }
3552
3553 static DEVICE_ATTR(debug_level, S_IWUSR | S_IRUGO,
3554 show_debug_level, store_debug_level);
3555
3556
3557 #endif /* CONFIG_IWLWIFI_DEBUG */
3558
3559
3560 static ssize_t show_version(struct device *d,
3561 struct device_attribute *attr, char *buf)
3562 {
3563 struct iwl_priv *priv = d->driver_data;
3564 struct iwl_alive_resp *palive = &priv->card_alive;
3565 ssize_t pos = 0;
3566 u16 eeprom_ver;
3567
3568 if (palive->is_valid)
3569 pos += sprintf(buf + pos,
3570 "fw version: 0x%01X.0x%01X.0x%01X.0x%01X\n"
3571 "fw type: 0x%01X 0x%01X\n",
3572 palive->ucode_major, palive->ucode_minor,
3573 palive->sw_rev[0], palive->sw_rev[1],
3574 palive->ver_type, palive->ver_subtype);
3575 else
3576 pos += sprintf(buf + pos, "fw not loaded\n");
3577
3578 if (priv->eeprom) {
3579 eeprom_ver = iwl_eeprom_query16(priv, EEPROM_VERSION);
3580 pos += sprintf(buf + pos, "EEPROM version: 0x%x\n",
3581 eeprom_ver);
3582 } else {
3583 pos += sprintf(buf + pos, "EEPROM not initialzed\n");
3584 }
3585
3586 return pos;
3587 }
3588
3589 static DEVICE_ATTR(version, S_IWUSR | S_IRUGO, show_version, NULL);
3590
3591 static ssize_t show_temperature(struct device *d,
3592 struct device_attribute *attr, char *buf)
3593 {
3594 struct iwl_priv *priv = (struct iwl_priv *)d->driver_data;
3595
3596 if (!iwl_is_alive(priv))
3597 return -EAGAIN;
3598
3599 return sprintf(buf, "%d\n", priv->temperature);
3600 }
3601
3602 static DEVICE_ATTR(temperature, S_IRUGO, show_temperature, NULL);
3603
3604 static ssize_t show_rs_window(struct device *d,
3605 struct device_attribute *attr,
3606 char *buf)
3607 {
3608 struct iwl_priv *priv = d->driver_data;
3609 return iwl4965_fill_rs_info(priv->hw, buf, IWL_AP_ID);
3610 }
3611 static DEVICE_ATTR(rs_window, S_IRUGO, show_rs_window, NULL);
3612
3613 static ssize_t show_tx_power(struct device *d,
3614 struct device_attribute *attr, char *buf)
3615 {
3616 struct iwl_priv *priv = (struct iwl_priv *)d->driver_data;
3617 return sprintf(buf, "%d\n", priv->tx_power_user_lmt);
3618 }
3619
3620 static ssize_t store_tx_power(struct device *d,
3621 struct device_attribute *attr,
3622 const char *buf, size_t count)
3623 {
3624 struct iwl_priv *priv = (struct iwl_priv *)d->driver_data;
3625 char *p = (char *)buf;
3626 u32 val;
3627
3628 val = simple_strtoul(p, &p, 10);
3629 if (p == buf)
3630 printk(KERN_INFO DRV_NAME
3631 ": %s is not in decimal form.\n", buf);
3632 else
3633 iwl_set_tx_power(priv, val, false);
3634
3635 return count;
3636 }
3637
3638 static DEVICE_ATTR(tx_power, S_IWUSR | S_IRUGO, show_tx_power, store_tx_power);
3639
3640 static ssize_t show_flags(struct device *d,
3641 struct device_attribute *attr, char *buf)
3642 {
3643 struct iwl_priv *priv = (struct iwl_priv *)d->driver_data;
3644
3645 return sprintf(buf, "0x%04X\n", priv->active_rxon.flags);
3646 }
3647
3648 static ssize_t store_flags(struct device *d,
3649 struct device_attribute *attr,
3650 const char *buf, size_t count)
3651 {
3652 struct iwl_priv *priv = (struct iwl_priv *)d->driver_data;
3653 u32 flags = simple_strtoul(buf, NULL, 0);
3654
3655 mutex_lock(&priv->mutex);
3656 if (le32_to_cpu(priv->staging_rxon.flags) != flags) {
3657 /* Cancel any currently running scans... */
3658 if (iwl_scan_cancel_timeout(priv, 100))
3659 IWL_WARNING("Could not cancel scan.\n");
3660 else {
3661 IWL_DEBUG_INFO("Committing rxon.flags = 0x%04X\n",
3662 flags);
3663 priv->staging_rxon.flags = cpu_to_le32(flags);
3664 iwl4965_commit_rxon(priv);
3665 }
3666 }
3667 mutex_unlock(&priv->mutex);
3668
3669 return count;
3670 }
3671
3672 static DEVICE_ATTR(flags, S_IWUSR | S_IRUGO, show_flags, store_flags);
3673
3674 static ssize_t show_filter_flags(struct device *d,
3675 struct device_attribute *attr, char *buf)
3676 {
3677 struct iwl_priv *priv = (struct iwl_priv *)d->driver_data;
3678
3679 return sprintf(buf, "0x%04X\n",
3680 le32_to_cpu(priv->active_rxon.filter_flags));
3681 }
3682
3683 static ssize_t store_filter_flags(struct device *d,
3684 struct device_attribute *attr,
3685 const char *buf, size_t count)
3686 {
3687 struct iwl_priv *priv = (struct iwl_priv *)d->driver_data;
3688 u32 filter_flags = simple_strtoul(buf, NULL, 0);
3689
3690 mutex_lock(&priv->mutex);
3691 if (le32_to_cpu(priv->staging_rxon.filter_flags) != filter_flags) {
3692 /* Cancel any currently running scans... */
3693 if (iwl_scan_cancel_timeout(priv, 100))
3694 IWL_WARNING("Could not cancel scan.\n");
3695 else {
3696 IWL_DEBUG_INFO("Committing rxon.filter_flags = "
3697 "0x%04X\n", filter_flags);
3698 priv->staging_rxon.filter_flags =
3699 cpu_to_le32(filter_flags);
3700 iwl4965_commit_rxon(priv);
3701 }
3702 }
3703 mutex_unlock(&priv->mutex);
3704
3705 return count;
3706 }
3707
3708 static DEVICE_ATTR(filter_flags, S_IWUSR | S_IRUGO, show_filter_flags,
3709 store_filter_flags);
3710
3711 #ifdef CONFIG_IWL4965_SPECTRUM_MEASUREMENT
3712
3713 static ssize_t show_measurement(struct device *d,
3714 struct device_attribute *attr, char *buf)
3715 {
3716 struct iwl_priv *priv = dev_get_drvdata(d);
3717 struct iwl4965_spectrum_notification measure_report;
3718 u32 size = sizeof(measure_report), len = 0, ofs = 0;
3719 u8 *data = (u8 *) & measure_report;
3720 unsigned long flags;
3721
3722 spin_lock_irqsave(&priv->lock, flags);
3723 if (!(priv->measurement_status & MEASUREMENT_READY)) {
3724 spin_unlock_irqrestore(&priv->lock, flags);
3725 return 0;
3726 }
3727 memcpy(&measure_report, &priv->measure_report, size);
3728 priv->measurement_status = 0;
3729 spin_unlock_irqrestore(&priv->lock, flags);
3730
3731 while (size && (PAGE_SIZE - len)) {
3732 hex_dump_to_buffer(data + ofs, size, 16, 1, buf + len,
3733 PAGE_SIZE - len, 1);
3734 len = strlen(buf);
3735 if (PAGE_SIZE - len)
3736 buf[len++] = '\n';
3737
3738 ofs += 16;
3739 size -= min(size, 16U);
3740 }
3741
3742 return len;
3743 }
3744
3745 static ssize_t store_measurement(struct device *d,
3746 struct device_attribute *attr,
3747 const char *buf, size_t count)
3748 {
3749 struct iwl_priv *priv = dev_get_drvdata(d);
3750 struct ieee80211_measurement_params params = {
3751 .channel = le16_to_cpu(priv->active_rxon.channel),
3752 .start_time = cpu_to_le64(priv->last_tsf),
3753 .duration = cpu_to_le16(1),
3754 };
3755 u8 type = IWL_MEASURE_BASIC;
3756 u8 buffer[32];
3757 u8 channel;
3758
3759 if (count) {
3760 char *p = buffer;
3761 strncpy(buffer, buf, min(sizeof(buffer), count));
3762 channel = simple_strtoul(p, NULL, 0);
3763 if (channel)
3764 params.channel = channel;
3765
3766 p = buffer;
3767 while (*p && *p != ' ')
3768 p++;
3769 if (*p)
3770 type = simple_strtoul(p + 1, NULL, 0);
3771 }
3772
3773 IWL_DEBUG_INFO("Invoking measurement of type %d on "
3774 "channel %d (for '%s')\n", type, params.channel, buf);
3775 iwl4965_get_measurement(priv, &params, type);
3776
3777 return count;
3778 }
3779
3780 static DEVICE_ATTR(measurement, S_IRUSR | S_IWUSR,
3781 show_measurement, store_measurement);
3782 #endif /* CONFIG_IWL4965_SPECTRUM_MEASUREMENT */
3783
3784 static ssize_t store_retry_rate(struct device *d,
3785 struct device_attribute *attr,
3786 const char *buf, size_t count)
3787 {
3788 struct iwl_priv *priv = dev_get_drvdata(d);
3789
3790 priv->retry_rate = simple_strtoul(buf, NULL, 0);
3791 if (priv->retry_rate <= 0)
3792 priv->retry_rate = 1;
3793
3794 return count;
3795 }
3796
3797 static ssize_t show_retry_rate(struct device *d,
3798 struct device_attribute *attr, char *buf)
3799 {
3800 struct iwl_priv *priv = dev_get_drvdata(d);
3801 return sprintf(buf, "%d", priv->retry_rate);
3802 }
3803
3804 static DEVICE_ATTR(retry_rate, S_IWUSR | S_IRUSR, show_retry_rate,
3805 store_retry_rate);
3806
3807 static ssize_t store_power_level(struct device *d,
3808 struct device_attribute *attr,
3809 const char *buf, size_t count)
3810 {
3811 struct iwl_priv *priv = dev_get_drvdata(d);
3812 int rc;
3813 int mode;
3814
3815 mode = simple_strtoul(buf, NULL, 0);
3816 mutex_lock(&priv->mutex);
3817
3818 if (!iwl_is_ready(priv)) {
3819 rc = -EAGAIN;
3820 goto out;
3821 }
3822
3823 rc = iwl_power_set_user_mode(priv, mode);
3824 if (rc) {
3825 IWL_DEBUG_MAC80211("failed setting power mode.\n");
3826 goto out;
3827 }
3828 rc = count;
3829
3830 out:
3831 mutex_unlock(&priv->mutex);
3832 return rc;
3833 }
3834
3835 #define MAX_WX_STRING 80
3836
3837 /* Values are in microsecond */
3838 static const s32 timeout_duration[] = {
3839 350000,
3840 250000,
3841 75000,
3842 37000,
3843 25000,
3844 };
3845 static const s32 period_duration[] = {
3846 400000,
3847 700000,
3848 1000000,
3849 1000000,
3850 1000000
3851 };
3852
3853 static ssize_t show_power_level(struct device *d,
3854 struct device_attribute *attr, char *buf)
3855 {
3856 struct iwl_priv *priv = dev_get_drvdata(d);
3857 int level = priv->power_data.power_mode;
3858 char *p = buf;
3859
3860 p += sprintf(p, "%d ", level);
3861 switch (level) {
3862 case IWL_POWER_MODE_CAM:
3863 case IWL_POWER_AC:
3864 p += sprintf(p, "(AC)");
3865 break;
3866 case IWL_POWER_BATTERY:
3867 p += sprintf(p, "(BATTERY)");
3868 break;
3869 default:
3870 p += sprintf(p,
3871 "(Timeout %dms, Period %dms)",
3872 timeout_duration[level - 1] / 1000,
3873 period_duration[level - 1] / 1000);
3874 }
3875 /*
3876 if (!(priv->power_mode & IWL_POWER_ENABLED))
3877 p += sprintf(p, " OFF\n");
3878 else
3879 p += sprintf(p, " \n");
3880 */
3881 p += sprintf(p, " \n");
3882 return (p - buf + 1);
3883 }
3884
3885 static DEVICE_ATTR(power_level, S_IWUSR | S_IRUSR, show_power_level,
3886 store_power_level);
3887
3888 static ssize_t show_channels(struct device *d,
3889 struct device_attribute *attr, char *buf)
3890 {
3891
3892 struct iwl_priv *priv = dev_get_drvdata(d);
3893 struct ieee80211_channel *channels = NULL;
3894 const struct ieee80211_supported_band *supp_band = NULL;
3895 int len = 0, i;
3896 int count = 0;
3897
3898 if (!test_bit(STATUS_GEO_CONFIGURED, &priv->status))
3899 return -EAGAIN;
3900
3901 supp_band = iwl_get_hw_mode(priv, IEEE80211_BAND_2GHZ);
3902 channels = supp_band->channels;
3903 count = supp_band->n_channels;
3904
3905 len += sprintf(&buf[len],
3906 "Displaying %d channels in 2.4GHz band "
3907 "(802.11bg):\n", count);
3908
3909 for (i = 0; i < count; i++)
3910 len += sprintf(&buf[len], "%d: %ddBm: BSS%s%s, %s.\n",
3911 ieee80211_frequency_to_channel(
3912 channels[i].center_freq),
3913 channels[i].max_power,
3914 channels[i].flags & IEEE80211_CHAN_RADAR ?
3915 " (IEEE 802.11h required)" : "",
3916 (!(channels[i].flags & IEEE80211_CHAN_NO_IBSS)
3917 || (channels[i].flags &
3918 IEEE80211_CHAN_RADAR)) ? "" :
3919 ", IBSS",
3920 channels[i].flags &
3921 IEEE80211_CHAN_PASSIVE_SCAN ?
3922 "passive only" : "active/passive");
3923
3924 supp_band = iwl_get_hw_mode(priv, IEEE80211_BAND_5GHZ);
3925 channels = supp_band->channels;
3926 count = supp_band->n_channels;
3927
3928 len += sprintf(&buf[len], "Displaying %d channels in 5.2GHz band "
3929 "(802.11a):\n", count);
3930
3931 for (i = 0; i < count; i++)
3932 len += sprintf(&buf[len], "%d: %ddBm: BSS%s%s, %s.\n",
3933 ieee80211_frequency_to_channel(
3934 channels[i].center_freq),
3935 channels[i].max_power,
3936 channels[i].flags & IEEE80211_CHAN_RADAR ?
3937 " (IEEE 802.11h required)" : "",
3938 ((channels[i].flags & IEEE80211_CHAN_NO_IBSS)
3939 || (channels[i].flags &
3940 IEEE80211_CHAN_RADAR)) ? "" :
3941 ", IBSS",
3942 channels[i].flags &
3943 IEEE80211_CHAN_PASSIVE_SCAN ?
3944 "passive only" : "active/passive");
3945
3946 return len;
3947 }
3948
3949 static DEVICE_ATTR(channels, S_IRUSR, show_channels, NULL);
3950
3951 static ssize_t show_statistics(struct device *d,
3952 struct device_attribute *attr, char *buf)
3953 {
3954 struct iwl_priv *priv = dev_get_drvdata(d);
3955 u32 size = sizeof(struct iwl_notif_statistics);
3956 u32 len = 0, ofs = 0;
3957 u8 *data = (u8 *) & priv->statistics;
3958 int rc = 0;
3959
3960 if (!iwl_is_alive(priv))
3961 return -EAGAIN;
3962
3963 mutex_lock(&priv->mutex);
3964 rc = iwl_send_statistics_request(priv, 0);
3965 mutex_unlock(&priv->mutex);
3966
3967 if (rc) {
3968 len = sprintf(buf,
3969 "Error sending statistics request: 0x%08X\n", rc);
3970 return len;
3971 }
3972
3973 while (size && (PAGE_SIZE - len)) {
3974 hex_dump_to_buffer(data + ofs, size, 16, 1, buf + len,
3975 PAGE_SIZE - len, 1);
3976 len = strlen(buf);
3977 if (PAGE_SIZE - len)
3978 buf[len++] = '\n';
3979
3980 ofs += 16;
3981 size -= min(size, 16U);
3982 }
3983
3984 return len;
3985 }
3986
3987 static DEVICE_ATTR(statistics, S_IRUGO, show_statistics, NULL);
3988
3989 static ssize_t show_status(struct device *d,
3990 struct device_attribute *attr, char *buf)
3991 {
3992 struct iwl_priv *priv = (struct iwl_priv *)d->driver_data;
3993 if (!iwl_is_alive(priv))
3994 return -EAGAIN;
3995 return sprintf(buf, "0x%08x\n", (int)priv->status);
3996 }
3997
3998 static DEVICE_ATTR(status, S_IRUGO, show_status, NULL);
3999
4000 /*****************************************************************************
4001 *
4002 * driver setup and teardown
4003 *
4004 *****************************************************************************/
4005
4006 static void iwl_setup_deferred_work(struct iwl_priv *priv)
4007 {
4008 priv->workqueue = create_workqueue(DRV_NAME);
4009
4010 init_waitqueue_head(&priv->wait_command_queue);
4011
4012 INIT_WORK(&priv->up, iwl4965_bg_up);
4013 INIT_WORK(&priv->restart, iwl4965_bg_restart);
4014 INIT_WORK(&priv->rx_replenish, iwl4965_bg_rx_replenish);
4015 INIT_WORK(&priv->rf_kill, iwl4965_bg_rf_kill);
4016 INIT_WORK(&priv->beacon_update, iwl4965_bg_beacon_update);
4017 INIT_WORK(&priv->set_monitor, iwl4965_bg_set_monitor);
4018 INIT_WORK(&priv->run_time_calib_work, iwl_bg_run_time_calib_work);
4019 INIT_DELAYED_WORK(&priv->init_alive_start, iwl_bg_init_alive_start);
4020 INIT_DELAYED_WORK(&priv->alive_start, iwl_bg_alive_start);
4021
4022 /* FIXME : remove when resolved PENDING */
4023 INIT_WORK(&priv->scan_completed, iwl_bg_scan_completed);
4024 iwl_setup_scan_deferred_work(priv);
4025
4026 if (priv->cfg->ops->lib->setup_deferred_work)
4027 priv->cfg->ops->lib->setup_deferred_work(priv);
4028
4029 init_timer(&priv->statistics_periodic);
4030 priv->statistics_periodic.data = (unsigned long)priv;
4031 priv->statistics_periodic.function = iwl4965_bg_statistics_periodic;
4032
4033 tasklet_init(&priv->irq_tasklet, (void (*)(unsigned long))
4034 iwl4965_irq_tasklet, (unsigned long)priv);
4035 }
4036
4037 static void iwl_cancel_deferred_work(struct iwl_priv *priv)
4038 {
4039 if (priv->cfg->ops->lib->cancel_deferred_work)
4040 priv->cfg->ops->lib->cancel_deferred_work(priv);
4041
4042 cancel_delayed_work_sync(&priv->init_alive_start);
4043 cancel_delayed_work(&priv->scan_check);
4044 cancel_delayed_work(&priv->alive_start);
4045 cancel_work_sync(&priv->beacon_update);
4046 del_timer_sync(&priv->statistics_periodic);
4047 }
4048
4049 static struct attribute *iwl4965_sysfs_entries[] = {
4050 &dev_attr_channels.attr,
4051 &dev_attr_flags.attr,
4052 &dev_attr_filter_flags.attr,
4053 #ifdef CONFIG_IWL4965_SPECTRUM_MEASUREMENT
4054 &dev_attr_measurement.attr,
4055 #endif
4056 &dev_attr_power_level.attr,
4057 &dev_attr_retry_rate.attr,
4058 &dev_attr_rs_window.attr,
4059 &dev_attr_statistics.attr,
4060 &dev_attr_status.attr,
4061 &dev_attr_temperature.attr,
4062 &dev_attr_tx_power.attr,
4063 #ifdef CONFIG_IWLWIFI_DEBUG
4064 &dev_attr_debug_level.attr,
4065 #endif
4066 &dev_attr_version.attr,
4067
4068 NULL
4069 };
4070
4071 static struct attribute_group iwl4965_attribute_group = {
4072 .name = NULL, /* put in device directory */
4073 .attrs = iwl4965_sysfs_entries,
4074 };
4075
4076 static struct ieee80211_ops iwl4965_hw_ops = {
4077 .tx = iwl4965_mac_tx,
4078 .start = iwl4965_mac_start,
4079 .stop = iwl4965_mac_stop,
4080 .add_interface = iwl4965_mac_add_interface,
4081 .remove_interface = iwl4965_mac_remove_interface,
4082 .config = iwl4965_mac_config,
4083 .config_interface = iwl4965_mac_config_interface,
4084 .configure_filter = iwl4965_configure_filter,
4085 .set_key = iwl4965_mac_set_key,
4086 .update_tkip_key = iwl4965_mac_update_tkip_key,
4087 .get_stats = iwl4965_mac_get_stats,
4088 .get_tx_stats = iwl4965_mac_get_tx_stats,
4089 .conf_tx = iwl4965_mac_conf_tx,
4090 .reset_tsf = iwl4965_mac_reset_tsf,
4091 .bss_info_changed = iwl4965_bss_info_changed,
4092 .ampdu_action = iwl4965_mac_ampdu_action,
4093 .hw_scan = iwl4965_mac_hw_scan
4094 };
4095
4096 static int iwl4965_pci_probe(struct pci_dev *pdev, const struct pci_device_id *ent)
4097 {
4098 int err = 0;
4099 struct iwl_priv *priv;
4100 struct ieee80211_hw *hw;
4101 struct iwl_cfg *cfg = (struct iwl_cfg *)(ent->driver_data);
4102 unsigned long flags;
4103 DECLARE_MAC_BUF(mac);
4104
4105 /************************
4106 * 1. Allocating HW data
4107 ************************/
4108
4109 /* Disabling hardware scan means that mac80211 will perform scans
4110 * "the hard way", rather than using device's scan. */
4111 if (cfg->mod_params->disable_hw_scan) {
4112 if (cfg->mod_params->debug & IWL_DL_INFO)
4113 dev_printk(KERN_DEBUG, &(pdev->dev),
4114 "Disabling hw_scan\n");
4115 iwl4965_hw_ops.hw_scan = NULL;
4116 }
4117
4118 hw = iwl_alloc_all(cfg, &iwl4965_hw_ops);
4119 if (!hw) {
4120 err = -ENOMEM;
4121 goto out;
4122 }
4123 priv = hw->priv;
4124 /* At this point both hw and priv are allocated. */
4125
4126 SET_IEEE80211_DEV(hw, &pdev->dev);
4127
4128 IWL_DEBUG_INFO("*** LOAD DRIVER ***\n");
4129 priv->cfg = cfg;
4130 priv->pci_dev = pdev;
4131
4132 #ifdef CONFIG_IWLWIFI_DEBUG
4133 priv->debug_level = priv->cfg->mod_params->debug;
4134 atomic_set(&priv->restrict_refcnt, 0);
4135 #endif
4136
4137 /**************************
4138 * 2. Initializing PCI bus
4139 **************************/
4140 if (pci_enable_device(pdev)) {
4141 err = -ENODEV;
4142 goto out_ieee80211_free_hw;
4143 }
4144
4145 pci_set_master(pdev);
4146
4147 err = pci_set_dma_mask(pdev, DMA_64BIT_MASK);
4148 if (!err)
4149 err = pci_set_consistent_dma_mask(pdev, DMA_64BIT_MASK);
4150 if (err) {
4151 err = pci_set_dma_mask(pdev, DMA_32BIT_MASK);
4152 if (!err)
4153 err = pci_set_consistent_dma_mask(pdev, DMA_32BIT_MASK);
4154 /* both attempts failed: */
4155 if (err) {
4156 printk(KERN_WARNING "%s: No suitable DMA available.\n",
4157 DRV_NAME);
4158 goto out_pci_disable_device;
4159 }
4160 }
4161
4162 err = pci_request_regions(pdev, DRV_NAME);
4163 if (err)
4164 goto out_pci_disable_device;
4165
4166 pci_set_drvdata(pdev, priv);
4167
4168 /* We disable the RETRY_TIMEOUT register (0x41) to keep
4169 * PCI Tx retries from interfering with C3 CPU state */
4170 pci_write_config_byte(pdev, 0x41, 0x00);
4171
4172 /***********************
4173 * 3. Read REV register
4174 ***********************/
4175 priv->hw_base = pci_iomap(pdev, 0, 0);
4176 if (!priv->hw_base) {
4177 err = -ENODEV;
4178 goto out_pci_release_regions;
4179 }
4180
4181 IWL_DEBUG_INFO("pci_resource_len = 0x%08llx\n",
4182 (unsigned long long) pci_resource_len(pdev, 0));
4183 IWL_DEBUG_INFO("pci_resource_base = %p\n", priv->hw_base);
4184
4185 iwl_hw_detect(priv);
4186 printk(KERN_INFO DRV_NAME
4187 ": Detected Intel Wireless WiFi Link %s REV=0x%X\n",
4188 priv->cfg->name, priv->hw_rev);
4189
4190 /* amp init */
4191 err = priv->cfg->ops->lib->apm_ops.init(priv);
4192 if (err < 0) {
4193 IWL_DEBUG_INFO("Failed to init APMG\n");
4194 goto out_iounmap;
4195 }
4196 /*****************
4197 * 4. Read EEPROM
4198 *****************/
4199 /* Read the EEPROM */
4200 err = iwl_eeprom_init(priv);
4201 if (err) {
4202 IWL_ERROR("Unable to init EEPROM\n");
4203 goto out_iounmap;
4204 }
4205 err = iwl_eeprom_check_version(priv);
4206 if (err)
4207 goto out_iounmap;
4208
4209 /* extract MAC Address */
4210 iwl_eeprom_get_mac(priv, priv->mac_addr);
4211 IWL_DEBUG_INFO("MAC address: %s\n", print_mac(mac, priv->mac_addr));
4212 SET_IEEE80211_PERM_ADDR(priv->hw, priv->mac_addr);
4213
4214 /************************
4215 * 5. Setup HW constants
4216 ************************/
4217 if (iwl_set_hw_params(priv)) {
4218 IWL_ERROR("failed to set hw parameters\n");
4219 goto out_free_eeprom;
4220 }
4221
4222 /*******************
4223 * 6. Setup priv
4224 *******************/
4225
4226 err = iwl_init_drv(priv);
4227 if (err)
4228 goto out_free_eeprom;
4229 /* At this point both hw and priv are initialized. */
4230
4231 /**********************************
4232 * 7. Initialize module parameters
4233 **********************************/
4234
4235 /* Disable radio (SW RF KILL) via parameter when loading driver */
4236 if (priv->cfg->mod_params->disable) {
4237 set_bit(STATUS_RF_KILL_SW, &priv->status);
4238 IWL_DEBUG_INFO("Radio disabled.\n");
4239 }
4240
4241 /********************
4242 * 8. Setup services
4243 ********************/
4244 spin_lock_irqsave(&priv->lock, flags);
4245 iwl4965_disable_interrupts(priv);
4246 spin_unlock_irqrestore(&priv->lock, flags);
4247
4248 err = sysfs_create_group(&pdev->dev.kobj, &iwl4965_attribute_group);
4249 if (err) {
4250 IWL_ERROR("failed to create sysfs device attributes\n");
4251 goto out_uninit_drv;
4252 }
4253
4254
4255 iwl_setup_deferred_work(priv);
4256 iwl_setup_rx_handlers(priv);
4257
4258 /********************
4259 * 9. Conclude
4260 ********************/
4261 pci_save_state(pdev);
4262 pci_disable_device(pdev);
4263
4264 /**********************************
4265 * 10. Setup and register mac80211
4266 **********************************/
4267
4268 err = iwl_setup_mac(priv);
4269 if (err)
4270 goto out_remove_sysfs;
4271
4272 err = iwl_dbgfs_register(priv, DRV_NAME);
4273 if (err)
4274 IWL_ERROR("failed to create debugfs files\n");
4275
4276 err = iwl_rfkill_init(priv);
4277 if (err)
4278 IWL_ERROR("Unable to initialize RFKILL system. "
4279 "Ignoring error: %d\n", err);
4280 iwl_power_initialize(priv);
4281 return 0;
4282
4283 out_remove_sysfs:
4284 sysfs_remove_group(&pdev->dev.kobj, &iwl4965_attribute_group);
4285 out_uninit_drv:
4286 iwl_uninit_drv(priv);
4287 out_free_eeprom:
4288 iwl_eeprom_free(priv);
4289 out_iounmap:
4290 pci_iounmap(pdev, priv->hw_base);
4291 out_pci_release_regions:
4292 pci_release_regions(pdev);
4293 pci_set_drvdata(pdev, NULL);
4294 out_pci_disable_device:
4295 pci_disable_device(pdev);
4296 out_ieee80211_free_hw:
4297 ieee80211_free_hw(priv->hw);
4298 out:
4299 return err;
4300 }
4301
4302 static void __devexit iwl4965_pci_remove(struct pci_dev *pdev)
4303 {
4304 struct iwl_priv *priv = pci_get_drvdata(pdev);
4305 unsigned long flags;
4306
4307 if (!priv)
4308 return;
4309
4310 IWL_DEBUG_INFO("*** UNLOAD DRIVER ***\n");
4311
4312 iwl_dbgfs_unregister(priv);
4313 sysfs_remove_group(&pdev->dev.kobj, &iwl4965_attribute_group);
4314
4315 if (priv->mac80211_registered) {
4316 ieee80211_unregister_hw(priv->hw);
4317 priv->mac80211_registered = 0;
4318 }
4319
4320 set_bit(STATUS_EXIT_PENDING, &priv->status);
4321
4322 iwl4965_down(priv);
4323
4324 /* make sure we flush any pending irq or
4325 * tasklet for the driver
4326 */
4327 spin_lock_irqsave(&priv->lock, flags);
4328 iwl4965_disable_interrupts(priv);
4329 spin_unlock_irqrestore(&priv->lock, flags);
4330
4331 iwl_synchronize_irq(priv);
4332
4333 iwl_rfkill_unregister(priv);
4334 iwl4965_dealloc_ucode_pci(priv);
4335
4336 if (priv->rxq.bd)
4337 iwl_rx_queue_free(priv, &priv->rxq);
4338 iwl_hw_txq_ctx_free(priv);
4339
4340 iwl_clear_stations_table(priv);
4341 iwl_eeprom_free(priv);
4342
4343
4344 /*netif_stop_queue(dev); */
4345 flush_workqueue(priv->workqueue);
4346
4347 /* ieee80211_unregister_hw calls iwl4965_mac_stop, which flushes
4348 * priv->workqueue... so we can't take down the workqueue
4349 * until now... */
4350 destroy_workqueue(priv->workqueue);
4351 priv->workqueue = NULL;
4352
4353 pci_iounmap(pdev, priv->hw_base);
4354 pci_release_regions(pdev);
4355 pci_disable_device(pdev);
4356 pci_set_drvdata(pdev, NULL);
4357
4358 iwl_uninit_drv(priv);
4359
4360 if (priv->ibss_beacon)
4361 dev_kfree_skb(priv->ibss_beacon);
4362
4363 ieee80211_free_hw(priv->hw);
4364 }
4365
4366 #ifdef CONFIG_PM
4367
4368 static int iwl4965_pci_suspend(struct pci_dev *pdev, pm_message_t state)
4369 {
4370 struct iwl_priv *priv = pci_get_drvdata(pdev);
4371
4372 if (priv->is_open) {
4373 set_bit(STATUS_IN_SUSPEND, &priv->status);
4374 iwl4965_mac_stop(priv->hw);
4375 priv->is_open = 1;
4376 }
4377
4378 pci_set_power_state(pdev, PCI_D3hot);
4379
4380 return 0;
4381 }
4382
4383 static int iwl4965_pci_resume(struct pci_dev *pdev)
4384 {
4385 struct iwl_priv *priv = pci_get_drvdata(pdev);
4386
4387 pci_set_power_state(pdev, PCI_D0);
4388
4389 if (priv->is_open)
4390 iwl4965_mac_start(priv->hw);
4391
4392 clear_bit(STATUS_IN_SUSPEND, &priv->status);
4393 return 0;
4394 }
4395
4396 #endif /* CONFIG_PM */
4397
4398 /*****************************************************************************
4399 *
4400 * driver and module entry point
4401 *
4402 *****************************************************************************/
4403
4404 /* Hardware specific file defines the PCI IDs table for that hardware module */
4405 static struct pci_device_id iwl_hw_card_ids[] = {
4406 {IWL_PCI_DEVICE(0x4229, PCI_ANY_ID, iwl4965_agn_cfg)},
4407 {IWL_PCI_DEVICE(0x4230, PCI_ANY_ID, iwl4965_agn_cfg)},
4408 #ifdef CONFIG_IWL5000
4409 {IWL_PCI_DEVICE(0x4232, 0x1205, iwl5100_bg_cfg)},
4410 {IWL_PCI_DEVICE(0x4232, 0x1305, iwl5100_bg_cfg)},
4411 {IWL_PCI_DEVICE(0x4232, 0x1206, iwl5100_abg_cfg)},
4412 {IWL_PCI_DEVICE(0x4232, 0x1306, iwl5100_abg_cfg)},
4413 {IWL_PCI_DEVICE(0x4232, 0x1326, iwl5100_abg_cfg)},
4414 {IWL_PCI_DEVICE(0x4237, 0x1216, iwl5100_abg_cfg)},
4415 {IWL_PCI_DEVICE(0x4232, PCI_ANY_ID, iwl5100_agn_cfg)},
4416 {IWL_PCI_DEVICE(0x4235, PCI_ANY_ID, iwl5300_agn_cfg)},
4417 {IWL_PCI_DEVICE(0x4236, PCI_ANY_ID, iwl5300_agn_cfg)},
4418 {IWL_PCI_DEVICE(0x4237, PCI_ANY_ID, iwl5100_agn_cfg)},
4419 {IWL_PCI_DEVICE(0x423A, PCI_ANY_ID, iwl5350_agn_cfg)},
4420 #endif /* CONFIG_IWL5000 */
4421 {0}
4422 };
4423 MODULE_DEVICE_TABLE(pci, iwl_hw_card_ids);
4424
4425 static struct pci_driver iwl_driver = {
4426 .name = DRV_NAME,
4427 .id_table = iwl_hw_card_ids,
4428 .probe = iwl4965_pci_probe,
4429 .remove = __devexit_p(iwl4965_pci_remove),
4430 #ifdef CONFIG_PM
4431 .suspend = iwl4965_pci_suspend,
4432 .resume = iwl4965_pci_resume,
4433 #endif
4434 };
4435
4436 static int __init iwl4965_init(void)
4437 {
4438
4439 int ret;
4440 printk(KERN_INFO DRV_NAME ": " DRV_DESCRIPTION ", " DRV_VERSION "\n");
4441 printk(KERN_INFO DRV_NAME ": " DRV_COPYRIGHT "\n");
4442
4443 ret = iwl4965_rate_control_register();
4444 if (ret) {
4445 IWL_ERROR("Unable to register rate control algorithm: %d\n", ret);
4446 return ret;
4447 }
4448
4449 ret = pci_register_driver(&iwl_driver);
4450 if (ret) {
4451 IWL_ERROR("Unable to initialize PCI module\n");
4452 goto error_register;
4453 }
4454
4455 return ret;
4456
4457 error_register:
4458 iwl4965_rate_control_unregister();
4459 return ret;
4460 }
4461
4462 static void __exit iwl4965_exit(void)
4463 {
4464 pci_unregister_driver(&iwl_driver);
4465 iwl4965_rate_control_unregister();
4466 }
4467
4468 module_exit(iwl4965_exit);
4469 module_init(iwl4965_init);
Linux 2.6 ibm-acpi/thinkpad-acpi driver git tree