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iwlwifi: setup compressed BA handler
[firewire-audio.git] / drivers / net / wireless / iwlwifi / iwl4965-base.c
bloba87e870f96d0614408c6556cb9d8468f5e356af8
1 /******************************************************************************
2 *
3 * Copyright(c) 2003 - 2008 Intel Corporation. All rights reserved.
4 *
5 * Portions of this file are derived from the ipw3945 project, as well
6 * as portions of the ieee80211 subsystem header files.
7 *
8 * This program is free software; you can redistribute it and/or modify it
9 * under the terms of version 2 of the GNU General Public License as
10 * published by the Free Software Foundation.
11 *
12 * This program is distributed in the hope that it will be useful, but WITHOUT
13 * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
14 * FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License for
15 * more details.
16 *
17 * You should have received a copy of the GNU General Public License along with
18 * this program; if not, write to the Free Software Foundation, Inc.,
19 * 51 Franklin Street, Fifth Floor, Boston, MA 02110, USA
20 *
21 * The full GNU General Public License is included in this distribution in the
22 * file called LICENSE.
23 *
24 * Contact Information:
25 * James P. Ketrenos <ipw2100-admin@linux.intel.com>
26 * Intel Corporation, 5200 N.E. Elam Young Parkway, Hillsboro, OR 97124-6497
27 *
28 *****************************************************************************/
29
30 #include <linux/kernel.h>
31 #include <linux/module.h>
32 #include <linux/version.h>
33 #include <linux/init.h>
34 #include <linux/pci.h>
35 #include <linux/dma-mapping.h>
36 #include <linux/delay.h>
37 #include <linux/skbuff.h>
38 #include <linux/netdevice.h>
39 #include <linux/wireless.h>
40 #include <linux/firmware.h>
41 #include <linux/etherdevice.h>
42 #include <linux/if_arp.h>
43
44 #include <net/mac80211.h>
45
46 #include <asm/div64.h>
47
48 #include "iwl-eeprom.h"
49 #include "iwl-dev.h"
50 #include "iwl-core.h"
51 #include "iwl-io.h"
52 #include "iwl-helpers.h"
53 #include "iwl-sta.h"
54 #include "iwl-calib.h"
55
56
57 /******************************************************************************
58 *
59 * module boiler plate
60 *
61 ******************************************************************************/
62
63 /*
64 * module name, copyright, version, etc.
65 * NOTE: DRV_NAME is defined in iwlwifi.h for use by iwl-debug.h and printk
66 */
67
68 #define DRV_DESCRIPTION "Intel(R) Wireless WiFi Link 4965AGN driver for Linux"
69
70 #ifdef CONFIG_IWLWIFI_DEBUG
71 #define VD "d"
72 #else
73 #define VD
74 #endif
75
76 #ifdef CONFIG_IWL4965_SPECTRUM_MEASUREMENT
77 #define VS "s"
78 #else
79 #define VS
80 #endif
81
82 #define DRV_VERSION IWLWIFI_VERSION VD VS
83
84
85 MODULE_DESCRIPTION(DRV_DESCRIPTION);
86 MODULE_VERSION(DRV_VERSION);
87 MODULE_AUTHOR(DRV_COPYRIGHT);
88 MODULE_LICENSE("GPL");
89
90 /*************** STATION TABLE MANAGEMENT ****
91 * mac80211 should be examined to determine if sta_info is duplicating
92 * the functionality provided here
93 */
94
95 /**************************************************************/
96
97
98
99 static void iwl4965_set_rxon_hwcrypto(struct iwl_priv *priv, int hw_decrypt)
100 {
101 struct iwl_rxon_cmd *rxon = &priv->staging_rxon;
102
103 if (hw_decrypt)
104 rxon->filter_flags &= ~RXON_FILTER_DIS_DECRYPT_MSK;
105 else
106 rxon->filter_flags |= RXON_FILTER_DIS_DECRYPT_MSK;
107
108 }
109
110 /**
111 * iwl4965_check_rxon_cmd - validate RXON structure is valid
112 *
113 * NOTE: This is really only useful during development and can eventually
114 * be #ifdef'd out once the driver is stable and folks aren't actively
115 * making changes
116 */
117 static int iwl4965_check_rxon_cmd(struct iwl_rxon_cmd *rxon)
118 {
119 int error = 0;
120 int counter = 1;
121
122 if (rxon->flags & RXON_FLG_BAND_24G_MSK) {
123 error |= le32_to_cpu(rxon->flags &
124 (RXON_FLG_TGJ_NARROW_BAND_MSK |
125 RXON_FLG_RADAR_DETECT_MSK));
126 if (error)
127 IWL_WARNING("check 24G fields %d | %d\n",
128 counter++, error);
129 } else {
130 error |= (rxon->flags & RXON_FLG_SHORT_SLOT_MSK) ?
131 0 : le32_to_cpu(RXON_FLG_SHORT_SLOT_MSK);
132 if (error)
133 IWL_WARNING("check 52 fields %d | %d\n",
134 counter++, error);
135 error |= le32_to_cpu(rxon->flags & RXON_FLG_CCK_MSK);
136 if (error)
137 IWL_WARNING("check 52 CCK %d | %d\n",
138 counter++, error);
139 }
140 error |= (rxon->node_addr[0] | rxon->bssid_addr[0]) & 0x1;
141 if (error)
142 IWL_WARNING("check mac addr %d | %d\n", counter++, error);
143
144 /* make sure basic rates 6Mbps and 1Mbps are supported */
145 error |= (((rxon->ofdm_basic_rates & IWL_RATE_6M_MASK) == 0) &&
146 ((rxon->cck_basic_rates & IWL_RATE_1M_MASK) == 0));
147 if (error)
148 IWL_WARNING("check basic rate %d | %d\n", counter++, error);
149
150 error |= (le16_to_cpu(rxon->assoc_id) > 2007);
151 if (error)
152 IWL_WARNING("check assoc id %d | %d\n", counter++, error);
153
154 error |= ((rxon->flags & (RXON_FLG_CCK_MSK | RXON_FLG_SHORT_SLOT_MSK))
155 == (RXON_FLG_CCK_MSK | RXON_FLG_SHORT_SLOT_MSK));
156 if (error)
157 IWL_WARNING("check CCK and short slot %d | %d\n",
158 counter++, error);
159
160 error |= ((rxon->flags & (RXON_FLG_CCK_MSK | RXON_FLG_AUTO_DETECT_MSK))
161 == (RXON_FLG_CCK_MSK | RXON_FLG_AUTO_DETECT_MSK));
162 if (error)
163 IWL_WARNING("check CCK & auto detect %d | %d\n",
164 counter++, error);
165
166 error |= ((rxon->flags & (RXON_FLG_AUTO_DETECT_MSK |
167 RXON_FLG_TGG_PROTECT_MSK)) == RXON_FLG_TGG_PROTECT_MSK);
168 if (error)
169 IWL_WARNING("check TGG and auto detect %d | %d\n",
170 counter++, error);
171
172 if (error)
173 IWL_WARNING("Tuning to channel %d\n",
174 le16_to_cpu(rxon->channel));
175
176 if (error) {
177 IWL_ERROR("Not a valid iwl4965_rxon_assoc_cmd field values\n");
178 return -1;
179 }
180 return 0;
181 }
182
183 /**
184 * iwl4965_full_rxon_required - check if full RXON (vs RXON_ASSOC) cmd is needed
185 * @priv: staging_rxon is compared to active_rxon
186 *
187 * If the RXON structure is changing enough to require a new tune,
188 * or is clearing the RXON_FILTER_ASSOC_MSK, then return 1 to indicate that
189 * a new tune (full RXON command, rather than RXON_ASSOC cmd) is required.
190 */
191 static int iwl4965_full_rxon_required(struct iwl_priv *priv)
192 {
193
194 /* These items are only settable from the full RXON command */
195 if (!(iwl_is_associated(priv)) ||
196 compare_ether_addr(priv->staging_rxon.bssid_addr,
197 priv->active_rxon.bssid_addr) ||
198 compare_ether_addr(priv->staging_rxon.node_addr,
199 priv->active_rxon.node_addr) ||
200 compare_ether_addr(priv->staging_rxon.wlap_bssid_addr,
201 priv->active_rxon.wlap_bssid_addr) ||
202 (priv->staging_rxon.dev_type != priv->active_rxon.dev_type) ||
203 (priv->staging_rxon.channel != priv->active_rxon.channel) ||
204 (priv->staging_rxon.air_propagation !=
205 priv->active_rxon.air_propagation) ||
206 (priv->staging_rxon.ofdm_ht_single_stream_basic_rates !=
207 priv->active_rxon.ofdm_ht_single_stream_basic_rates) ||
208 (priv->staging_rxon.ofdm_ht_dual_stream_basic_rates !=
209 priv->active_rxon.ofdm_ht_dual_stream_basic_rates) ||
210 (priv->staging_rxon.rx_chain != priv->active_rxon.rx_chain) ||
211 (priv->staging_rxon.assoc_id != priv->active_rxon.assoc_id))
212 return 1;
213
214 /* flags, filter_flags, ofdm_basic_rates, and cck_basic_rates can
215 * be updated with the RXON_ASSOC command -- however only some
216 * flag transitions are allowed using RXON_ASSOC */
217
218 /* Check if we are not switching bands */
219 if ((priv->staging_rxon.flags & RXON_FLG_BAND_24G_MSK) !=
220 (priv->active_rxon.flags & RXON_FLG_BAND_24G_MSK))
221 return 1;
222
223 /* Check if we are switching association toggle */
224 if ((priv->staging_rxon.filter_flags & RXON_FILTER_ASSOC_MSK) !=
225 (priv->active_rxon.filter_flags & RXON_FILTER_ASSOC_MSK))
226 return 1;
227
228 return 0;
229 }
230
231 /**
232 * iwl4965_commit_rxon - commit staging_rxon to hardware
233 *
234 * The RXON command in staging_rxon is committed to the hardware and
235 * the active_rxon structure is updated with the new data. This
236 * function correctly transitions out of the RXON_ASSOC_MSK state if
237 * a HW tune is required based on the RXON structure changes.
238 */
239 static int iwl4965_commit_rxon(struct iwl_priv *priv)
240 {
241 /* cast away the const for active_rxon in this function */
242 struct iwl_rxon_cmd *active_rxon = (void *)&priv->active_rxon;
243 DECLARE_MAC_BUF(mac);
244 int ret;
245 bool new_assoc =
246 !!(priv->staging_rxon.filter_flags & RXON_FILTER_ASSOC_MSK);
247
248 if (!iwl_is_alive(priv))
249 return -EBUSY;
250
251 /* always get timestamp with Rx frame */
252 priv->staging_rxon.flags |= RXON_FLG_TSF2HOST_MSK;
253
254 ret = iwl4965_check_rxon_cmd(&priv->staging_rxon);
255 if (ret) {
256 IWL_ERROR("Invalid RXON configuration. Not committing.\n");
257 return -EINVAL;
258 }
259
260 /* If we don't need to send a full RXON, we can use
261 * iwl4965_rxon_assoc_cmd which is used to reconfigure filter
262 * and other flags for the current radio configuration. */
263 if (!iwl4965_full_rxon_required(priv)) {
264 ret = iwl_send_rxon_assoc(priv);
265 if (ret) {
266 IWL_ERROR("Error setting RXON_ASSOC (%d)\n", ret);
267 return ret;
268 }
269
270 memcpy(active_rxon, &priv->staging_rxon, sizeof(*active_rxon));
271 return 0;
272 }
273
274 /* station table will be cleared */
275 priv->assoc_station_added = 0;
276
277 /* If we are currently associated and the new config requires
278 * an RXON_ASSOC and the new config wants the associated mask enabled,
279 * we must clear the associated from the active configuration
280 * before we apply the new config */
281 if (iwl_is_associated(priv) && new_assoc) {
282 IWL_DEBUG_INFO("Toggling associated bit on current RXON\n");
283 active_rxon->filter_flags &= ~RXON_FILTER_ASSOC_MSK;
284
285 ret = iwl_send_cmd_pdu(priv, REPLY_RXON,
286 sizeof(struct iwl_rxon_cmd),
287 &priv->active_rxon);
288
289 /* If the mask clearing failed then we set
290 * active_rxon back to what it was previously */
291 if (ret) {
292 active_rxon->filter_flags |= RXON_FILTER_ASSOC_MSK;
293 IWL_ERROR("Error clearing ASSOC_MSK (%d)\n", ret);
294 return ret;
295 }
296 }
297
298 IWL_DEBUG_INFO("Sending RXON\n"
299 "* with%s RXON_FILTER_ASSOC_MSK\n"
300 "* channel = %d\n"
301 "* bssid = %s\n",
302 (new_assoc ? "" : "out"),
303 le16_to_cpu(priv->staging_rxon.channel),
304 print_mac(mac, priv->staging_rxon.bssid_addr));
305
306 iwl4965_set_rxon_hwcrypto(priv, !priv->hw_params.sw_crypto);
307
308 /* Apply the new configuration
309 * RXON unassoc clears the station table in uCode, send it before
310 * we add the bcast station. If assoc bit is set, we will send RXON
311 * after having added the bcast and bssid station.
312 */
313 if (!new_assoc) {
314 ret = iwl_send_cmd_pdu(priv, REPLY_RXON,
315 sizeof(struct iwl_rxon_cmd), &priv->staging_rxon);
316 if (ret) {
317 IWL_ERROR("Error setting new RXON (%d)\n", ret);
318 return ret;
319 }
320 memcpy(active_rxon, &priv->staging_rxon, sizeof(*active_rxon));
321 }
322
323 iwl_clear_stations_table(priv);
324
325 if (!priv->error_recovering)
326 priv->start_calib = 0;
327
328 iwl_init_sensitivity(priv);
329
330 /* If we issue a new RXON command which required a tune then we must
331 * send a new TXPOWER command or we won't be able to Tx any frames */
332 ret = iwl_set_tx_power(priv, priv->tx_power_user_lmt, true);
333 if (ret) {
334 IWL_ERROR("Error sending TX power (%d)\n", ret);
335 return ret;
336 }
337
338 /* Add the broadcast address so we can send broadcast frames */
339 if (iwl_rxon_add_station(priv, iwl_bcast_addr, 0) ==
340 IWL_INVALID_STATION) {
341 IWL_ERROR("Error adding BROADCAST address for transmit.\n");
342 return -EIO;
343 }
344
345 /* If we have set the ASSOC_MSK and we are in BSS mode then
346 * add the IWL_AP_ID to the station rate table */
347 if (new_assoc && (priv->iw_mode == IEEE80211_IF_TYPE_STA)) {
348 if (iwl_rxon_add_station(priv, priv->active_rxon.bssid_addr, 1)
349 == IWL_INVALID_STATION) {
350 IWL_ERROR("Error adding AP address for transmit.\n");
351 return -EIO;
352 }
353 priv->assoc_station_added = 1;
354 if (priv->default_wep_key &&
355 iwl_send_static_wepkey_cmd(priv, 0))
356 IWL_ERROR("Could not send WEP static key.\n");
357
358 /* Apply the new configuration
359 * RXON assoc doesn't clear the station table in uCode,
360 */
361 ret = iwl_send_cmd_pdu(priv, REPLY_RXON,
362 sizeof(struct iwl_rxon_cmd), &priv->staging_rxon);
363 if (ret) {
364 IWL_ERROR("Error setting new RXON (%d)\n", ret);
365 return ret;
366 }
367 memcpy(active_rxon, &priv->staging_rxon, sizeof(*active_rxon));
368 }
369
370 return 0;
371 }
372
373 void iwl4965_update_chain_flags(struct iwl_priv *priv)
374 {
375
376 iwl_set_rxon_chain(priv);
377 iwl4965_commit_rxon(priv);
378 }
379
380 static int iwl4965_send_bt_config(struct iwl_priv *priv)
381 {
382 struct iwl4965_bt_cmd bt_cmd = {
383 .flags = 3,
384 .lead_time = 0xAA,
385 .max_kill = 1,
386 .kill_ack_mask = 0,
387 .kill_cts_mask = 0,
388 };
389
390 return iwl_send_cmd_pdu(priv, REPLY_BT_CONFIG,
391 sizeof(struct iwl4965_bt_cmd), &bt_cmd);
392 }
393
394 static void iwl_clear_free_frames(struct iwl_priv *priv)
395 {
396 struct list_head *element;
397
398 IWL_DEBUG_INFO("%d frames on pre-allocated heap on clear.\n",
399 priv->frames_count);
400
401 while (!list_empty(&priv->free_frames)) {
402 element = priv->free_frames.next;
403 list_del(element);
404 kfree(list_entry(element, struct iwl_frame, list));
405 priv->frames_count--;
406 }
407
408 if (priv->frames_count) {
409 IWL_WARNING("%d frames still in use. Did we lose one?\n",
410 priv->frames_count);
411 priv->frames_count = 0;
412 }
413 }
414
415 static struct iwl_frame *iwl_get_free_frame(struct iwl_priv *priv)
416 {
417 struct iwl_frame *frame;
418 struct list_head *element;
419 if (list_empty(&priv->free_frames)) {
420 frame = kzalloc(sizeof(*frame), GFP_KERNEL);
421 if (!frame) {
422 IWL_ERROR("Could not allocate frame!\n");
423 return NULL;
424 }
425
426 priv->frames_count++;
427 return frame;
428 }
429
430 element = priv->free_frames.next;
431 list_del(element);
432 return list_entry(element, struct iwl_frame, list);
433 }
434
435 static void iwl_free_frame(struct iwl_priv *priv, struct iwl_frame *frame)
436 {
437 memset(frame, 0, sizeof(*frame));
438 list_add(&frame->list, &priv->free_frames);
439 }
440
441 unsigned int iwl4965_fill_beacon_frame(struct iwl_priv *priv,
442 struct ieee80211_hdr *hdr,
443 const u8 *dest, int left)
444 {
445
446 if (!iwl_is_associated(priv) || !priv->ibss_beacon ||
447 ((priv->iw_mode != IEEE80211_IF_TYPE_IBSS) &&
448 (priv->iw_mode != IEEE80211_IF_TYPE_AP)))
449 return 0;
450
451 if (priv->ibss_beacon->len > left)
452 return 0;
453
454 memcpy(hdr, priv->ibss_beacon->data, priv->ibss_beacon->len);
455
456 return priv->ibss_beacon->len;
457 }
458
459 static u8 iwl4965_rate_get_lowest_plcp(struct iwl_priv *priv)
460 {
461 int i;
462 int rate_mask;
463
464 /* Set rate mask*/
465 if (priv->staging_rxon.flags & RXON_FLG_BAND_24G_MSK)
466 rate_mask = priv->active_rate_basic & 0xF;
467 else
468 rate_mask = priv->active_rate_basic & 0xFF0;
469
470 /* Find lowest valid rate */
471 for (i = IWL_RATE_1M_INDEX; i != IWL_RATE_INVALID;
472 i = iwl_rates[i].next_ieee) {
473 if (rate_mask & (1 << i))
474 return iwl_rates[i].plcp;
475 }
476
477 /* No valid rate was found. Assign the lowest one */
478 if (priv->staging_rxon.flags & RXON_FLG_BAND_24G_MSK)
479 return IWL_RATE_1M_PLCP;
480 else
481 return IWL_RATE_6M_PLCP;
482 }
483
484 static int iwl4965_send_beacon_cmd(struct iwl_priv *priv)
485 {
486 struct iwl_frame *frame;
487 unsigned int frame_size;
488 int rc;
489 u8 rate;
490
491 frame = iwl_get_free_frame(priv);
492
493 if (!frame) {
494 IWL_ERROR("Could not obtain free frame buffer for beacon "
495 "command.\n");
496 return -ENOMEM;
497 }
498
499 rate = iwl4965_rate_get_lowest_plcp(priv);
500
501 frame_size = iwl4965_hw_get_beacon_cmd(priv, frame, rate);
502
503 rc = iwl_send_cmd_pdu(priv, REPLY_TX_BEACON, frame_size,
504 &frame->u.cmd[0]);
505
506 iwl_free_frame(priv, frame);
507
508 return rc;
509 }
510
511 /******************************************************************************
512 *
513 * Misc. internal state and helper functions
514 *
515 ******************************************************************************/
516
517 static void iwl4965_ht_conf(struct iwl_priv *priv,
518 struct ieee80211_bss_conf *bss_conf)
519 {
520 struct ieee80211_ht_info *ht_conf = bss_conf->ht_conf;
521 struct ieee80211_ht_bss_info *ht_bss_conf = bss_conf->ht_bss_conf;
522 struct iwl_ht_info *iwl_conf = &priv->current_ht_config;
523
524 IWL_DEBUG_MAC80211("enter: \n");
525
526 iwl_conf->is_ht = bss_conf->assoc_ht;
527
528 if (!iwl_conf->is_ht)
529 return;
530
531 priv->ps_mode = (u8)((ht_conf->cap & IEEE80211_HT_CAP_MIMO_PS) >> 2);
532
533 if (ht_conf->cap & IEEE80211_HT_CAP_SGI_20)
534 iwl_conf->sgf |= HT_SHORT_GI_20MHZ;
535 if (ht_conf->cap & IEEE80211_HT_CAP_SGI_40)
536 iwl_conf->sgf |= HT_SHORT_GI_40MHZ;
537
538 iwl_conf->is_green_field = !!(ht_conf->cap & IEEE80211_HT_CAP_GRN_FLD);
539 iwl_conf->max_amsdu_size =
540 !!(ht_conf->cap & IEEE80211_HT_CAP_MAX_AMSDU);
541
542 iwl_conf->supported_chan_width =
543 !!(ht_conf->cap & IEEE80211_HT_CAP_SUP_WIDTH);
544 iwl_conf->extension_chan_offset =
545 ht_bss_conf->bss_cap & IEEE80211_HT_IE_CHA_SEC_OFFSET;
546 /* If no above or below channel supplied disable FAT channel */
547 if (iwl_conf->extension_chan_offset != IEEE80211_HT_IE_CHA_SEC_ABOVE &&
548 iwl_conf->extension_chan_offset != IEEE80211_HT_IE_CHA_SEC_BELOW) {
549 iwl_conf->extension_chan_offset = IEEE80211_HT_IE_CHA_SEC_NONE;
550 iwl_conf->supported_chan_width = 0;
551 }
552
553 iwl_conf->tx_mimo_ps_mode =
554 (u8)((ht_conf->cap & IEEE80211_HT_CAP_MIMO_PS) >> 2);
555 memcpy(iwl_conf->supp_mcs_set, ht_conf->supp_mcs_set, 16);
556
557 iwl_conf->control_channel = ht_bss_conf->primary_channel;
558 iwl_conf->tx_chan_width =
559 !!(ht_bss_conf->bss_cap & IEEE80211_HT_IE_CHA_WIDTH);
560 iwl_conf->ht_protection =
561 ht_bss_conf->bss_op_mode & IEEE80211_HT_IE_HT_PROTECTION;
562 iwl_conf->non_GF_STA_present =
563 !!(ht_bss_conf->bss_op_mode & IEEE80211_HT_IE_NON_GF_STA_PRSNT);
564
565 IWL_DEBUG_MAC80211("control channel %d\n", iwl_conf->control_channel);
566 IWL_DEBUG_MAC80211("leave\n");
567 }
568
569 /*
570 * QoS support
571 */
572 static int iwl4965_send_qos_params_command(struct iwl_priv *priv,
573 struct iwl4965_qosparam_cmd *qos)
574 {
575
576 return iwl_send_cmd_pdu(priv, REPLY_QOS_PARAM,
577 sizeof(struct iwl4965_qosparam_cmd), qos);
578 }
579
580 static void iwl4965_activate_qos(struct iwl_priv *priv, u8 force)
581 {
582 unsigned long flags;
583
584 if (test_bit(STATUS_EXIT_PENDING, &priv->status))
585 return;
586
587 if (!priv->qos_data.qos_enable)
588 return;
589
590 spin_lock_irqsave(&priv->lock, flags);
591 priv->qos_data.def_qos_parm.qos_flags = 0;
592
593 if (priv->qos_data.qos_cap.q_AP.queue_request &&
594 !priv->qos_data.qos_cap.q_AP.txop_request)
595 priv->qos_data.def_qos_parm.qos_flags |=
596 QOS_PARAM_FLG_TXOP_TYPE_MSK;
597 if (priv->qos_data.qos_active)
598 priv->qos_data.def_qos_parm.qos_flags |=
599 QOS_PARAM_FLG_UPDATE_EDCA_MSK;
600
601 if (priv->current_ht_config.is_ht)
602 priv->qos_data.def_qos_parm.qos_flags |= QOS_PARAM_FLG_TGN_MSK;
603
604 spin_unlock_irqrestore(&priv->lock, flags);
605
606 if (force || iwl_is_associated(priv)) {
607 IWL_DEBUG_QOS("send QoS cmd with Qos active=%d FLAGS=0x%X\n",
608 priv->qos_data.qos_active,
609 priv->qos_data.def_qos_parm.qos_flags);
610
611 iwl4965_send_qos_params_command(priv,
612 &(priv->qos_data.def_qos_parm));
613 }
614 }
615
616 #define MAX_UCODE_BEACON_INTERVAL 4096
617 #define INTEL_CONN_LISTEN_INTERVAL __constant_cpu_to_le16(0xA)
618
619 static __le16 iwl4965_adjust_beacon_interval(u16 beacon_val)
620 {
621 u16 new_val = 0;
622 u16 beacon_factor = 0;
623
624 beacon_factor =
625 (beacon_val + MAX_UCODE_BEACON_INTERVAL)
626 / MAX_UCODE_BEACON_INTERVAL;
627 new_val = beacon_val / beacon_factor;
628
629 return cpu_to_le16(new_val);
630 }
631
632 static void iwl4965_setup_rxon_timing(struct iwl_priv *priv)
633 {
634 u64 interval_tm_unit;
635 u64 tsf, result;
636 unsigned long flags;
637 struct ieee80211_conf *conf = NULL;
638 u16 beacon_int = 0;
639
640 conf = ieee80211_get_hw_conf(priv->hw);
641
642 spin_lock_irqsave(&priv->lock, flags);
643 priv->rxon_timing.timestamp.dw[1] = cpu_to_le32(priv->timestamp >> 32);
644 priv->rxon_timing.timestamp.dw[0] =
645 cpu_to_le32(priv->timestamp & 0xFFFFFFFF);
646
647 priv->rxon_timing.listen_interval = INTEL_CONN_LISTEN_INTERVAL;
648
649 tsf = priv->timestamp;
650
651 beacon_int = priv->beacon_int;
652 spin_unlock_irqrestore(&priv->lock, flags);
653
654 if (priv->iw_mode == IEEE80211_IF_TYPE_STA) {
655 if (beacon_int == 0) {
656 priv->rxon_timing.beacon_interval = cpu_to_le16(100);
657 priv->rxon_timing.beacon_init_val = cpu_to_le32(102400);
658 } else {
659 priv->rxon_timing.beacon_interval =
660 cpu_to_le16(beacon_int);
661 priv->rxon_timing.beacon_interval =
662 iwl4965_adjust_beacon_interval(
663 le16_to_cpu(priv->rxon_timing.beacon_interval));
664 }
665
666 priv->rxon_timing.atim_window = 0;
667 } else {
668 priv->rxon_timing.beacon_interval =
669 iwl4965_adjust_beacon_interval(conf->beacon_int);
670 /* TODO: we need to get atim_window from upper stack
671 * for now we set to 0 */
672 priv->rxon_timing.atim_window = 0;
673 }
674
675 interval_tm_unit =
676 (le16_to_cpu(priv->rxon_timing.beacon_interval) * 1024);
677 result = do_div(tsf, interval_tm_unit);
678 priv->rxon_timing.beacon_init_val =
679 cpu_to_le32((u32) ((u64) interval_tm_unit - result));
680
681 IWL_DEBUG_ASSOC
682 ("beacon interval %d beacon timer %d beacon tim %d\n",
683 le16_to_cpu(priv->rxon_timing.beacon_interval),
684 le32_to_cpu(priv->rxon_timing.beacon_init_val),
685 le16_to_cpu(priv->rxon_timing.atim_window));
686 }
687
688 static void iwl_set_flags_for_band(struct iwl_priv *priv,
689 enum ieee80211_band band)
690 {
691 if (band == IEEE80211_BAND_5GHZ) {
692 priv->staging_rxon.flags &=
693 ~(RXON_FLG_BAND_24G_MSK | RXON_FLG_AUTO_DETECT_MSK
694 | RXON_FLG_CCK_MSK);
695 priv->staging_rxon.flags |= RXON_FLG_SHORT_SLOT_MSK;
696 } else {
697 /* Copied from iwl4965_post_associate() */
698 if (priv->assoc_capability & WLAN_CAPABILITY_SHORT_SLOT_TIME)
699 priv->staging_rxon.flags |= RXON_FLG_SHORT_SLOT_MSK;
700 else
701 priv->staging_rxon.flags &= ~RXON_FLG_SHORT_SLOT_MSK;
702
703 if (priv->iw_mode == IEEE80211_IF_TYPE_IBSS)
704 priv->staging_rxon.flags &= ~RXON_FLG_SHORT_SLOT_MSK;
705
706 priv->staging_rxon.flags |= RXON_FLG_BAND_24G_MSK;
707 priv->staging_rxon.flags |= RXON_FLG_AUTO_DETECT_MSK;
708 priv->staging_rxon.flags &= ~RXON_FLG_CCK_MSK;
709 }
710 }
711
712 /*
713 * initialize rxon structure with default values from eeprom
714 */
715 static void iwl4965_connection_init_rx_config(struct iwl_priv *priv)
716 {
717 const struct iwl_channel_info *ch_info;
718
719 memset(&priv->staging_rxon, 0, sizeof(priv->staging_rxon));
720
721 switch (priv->iw_mode) {
722 case IEEE80211_IF_TYPE_AP:
723 priv->staging_rxon.dev_type = RXON_DEV_TYPE_AP;
724 break;
725
726 case IEEE80211_IF_TYPE_STA:
727 priv->staging_rxon.dev_type = RXON_DEV_TYPE_ESS;
728 priv->staging_rxon.filter_flags = RXON_FILTER_ACCEPT_GRP_MSK;
729 break;
730
731 case IEEE80211_IF_TYPE_IBSS:
732 priv->staging_rxon.dev_type = RXON_DEV_TYPE_IBSS;
733 priv->staging_rxon.flags = RXON_FLG_SHORT_PREAMBLE_MSK;
734 priv->staging_rxon.filter_flags = RXON_FILTER_BCON_AWARE_MSK |
735 RXON_FILTER_ACCEPT_GRP_MSK;
736 break;
737
738 case IEEE80211_IF_TYPE_MNTR:
739 priv->staging_rxon.dev_type = RXON_DEV_TYPE_SNIFFER;
740 priv->staging_rxon.filter_flags = RXON_FILTER_PROMISC_MSK |
741 RXON_FILTER_CTL2HOST_MSK | RXON_FILTER_ACCEPT_GRP_MSK;
742 break;
743 default:
744 IWL_ERROR("Unsupported interface type %d\n", priv->iw_mode);
745 break;
746 }
747
748 #if 0
749 /* TODO: Figure out when short_preamble would be set and cache from
750 * that */
751 if (!hw_to_local(priv->hw)->short_preamble)
752 priv->staging_rxon.flags &= ~RXON_FLG_SHORT_PREAMBLE_MSK;
753 else
754 priv->staging_rxon.flags |= RXON_FLG_SHORT_PREAMBLE_MSK;
755 #endif
756
757 ch_info = iwl_get_channel_info(priv, priv->band,
758 le16_to_cpu(priv->staging_rxon.channel));
759
760 if (!ch_info)
761 ch_info = &priv->channel_info[0];
762
763 /*
764 * in some case A channels are all non IBSS
765 * in this case force B/G channel
766 */
767 if ((priv->iw_mode == IEEE80211_IF_TYPE_IBSS) &&
768 !(is_channel_ibss(ch_info)))
769 ch_info = &priv->channel_info[0];
770
771 priv->staging_rxon.channel = cpu_to_le16(ch_info->channel);
772 priv->band = ch_info->band;
773
774 iwl_set_flags_for_band(priv, priv->band);
775
776 priv->staging_rxon.ofdm_basic_rates =
777 (IWL_OFDM_RATES_MASK >> IWL_FIRST_OFDM_RATE) & 0xFF;
778 priv->staging_rxon.cck_basic_rates =
779 (IWL_CCK_RATES_MASK >> IWL_FIRST_CCK_RATE) & 0xF;
780
781 priv->staging_rxon.flags &= ~(RXON_FLG_CHANNEL_MODE_MIXED_MSK |
782 RXON_FLG_CHANNEL_MODE_PURE_40_MSK);
783 memcpy(priv->staging_rxon.node_addr, priv->mac_addr, ETH_ALEN);
784 memcpy(priv->staging_rxon.wlap_bssid_addr, priv->mac_addr, ETH_ALEN);
785 priv->staging_rxon.ofdm_ht_single_stream_basic_rates = 0xff;
786 priv->staging_rxon.ofdm_ht_dual_stream_basic_rates = 0xff;
787 iwl_set_rxon_chain(priv);
788 }
789
790 static int iwl4965_set_mode(struct iwl_priv *priv, int mode)
791 {
792 priv->iw_mode = mode;
793
794 /* init channel/phymode to values given at driver init */
795 iwl_set_rxon_channel(priv, IEEE80211_BAND_2GHZ, 6);
796
797 iwl4965_connection_init_rx_config(priv);
798 memcpy(priv->staging_rxon.node_addr, priv->mac_addr, ETH_ALEN);
799
800 iwl_clear_stations_table(priv);
801
802 /* dont commit rxon if rf-kill is on*/
803 if (!iwl_is_ready_rf(priv))
804 return -EAGAIN;
805
806 cancel_delayed_work(&priv->scan_check);
807 if (iwl_scan_cancel_timeout(priv, 100)) {
808 IWL_WARNING("Aborted scan still in progress after 100ms\n");
809 IWL_DEBUG_MAC80211("leaving - scan abort failed.\n");
810 return -EAGAIN;
811 }
812
813 iwl4965_commit_rxon(priv);
814
815 return 0;
816 }
817
818 static void iwl4965_set_rate(struct iwl_priv *priv)
819 {
820 const struct ieee80211_supported_band *hw = NULL;
821 struct ieee80211_rate *rate;
822 int i;
823
824 hw = iwl_get_hw_mode(priv, priv->band);
825 if (!hw) {
826 IWL_ERROR("Failed to set rate: unable to get hw mode\n");
827 return;
828 }
829
830 priv->active_rate = 0;
831 priv->active_rate_basic = 0;
832
833 for (i = 0; i < hw->n_bitrates; i++) {
834 rate = &(hw->bitrates[i]);
835 if (rate->hw_value < IWL_RATE_COUNT)
836 priv->active_rate |= (1 << rate->hw_value);
837 }
838
839 IWL_DEBUG_RATE("Set active_rate = %0x, active_rate_basic = %0x\n",
840 priv->active_rate, priv->active_rate_basic);
841
842 /*
843 * If a basic rate is configured, then use it (adding IWL_RATE_1M_MASK)
844 * otherwise set it to the default of all CCK rates and 6, 12, 24 for
845 * OFDM
846 */
847 if (priv->active_rate_basic & IWL_CCK_BASIC_RATES_MASK)
848 priv->staging_rxon.cck_basic_rates =
849 ((priv->active_rate_basic &
850 IWL_CCK_RATES_MASK) >> IWL_FIRST_CCK_RATE) & 0xF;
851 else
852 priv->staging_rxon.cck_basic_rates =
853 (IWL_CCK_BASIC_RATES_MASK >> IWL_FIRST_CCK_RATE) & 0xF;
854
855 if (priv->active_rate_basic & IWL_OFDM_BASIC_RATES_MASK)
856 priv->staging_rxon.ofdm_basic_rates =
857 ((priv->active_rate_basic &
858 (IWL_OFDM_BASIC_RATES_MASK | IWL_RATE_6M_MASK)) >>
859 IWL_FIRST_OFDM_RATE) & 0xFF;
860 else
861 priv->staging_rxon.ofdm_basic_rates =
862 (IWL_OFDM_BASIC_RATES_MASK >> IWL_FIRST_OFDM_RATE) & 0xFF;
863 }
864
865 #ifdef CONFIG_IWL4965_SPECTRUM_MEASUREMENT
866
867 #include "iwl-spectrum.h"
868
869 #define BEACON_TIME_MASK_LOW 0x00FFFFFF
870 #define BEACON_TIME_MASK_HIGH 0xFF000000
871 #define TIME_UNIT 1024
872
873 /*
874 * extended beacon time format
875 * time in usec will be changed into a 32-bit value in 8:24 format
876 * the high 1 byte is the beacon counts
877 * the lower 3 bytes is the time in usec within one beacon interval
878 */
879
880 static u32 iwl4965_usecs_to_beacons(u32 usec, u32 beacon_interval)
881 {
882 u32 quot;
883 u32 rem;
884 u32 interval = beacon_interval * 1024;
885
886 if (!interval || !usec)
887 return 0;
888
889 quot = (usec / interval) & (BEACON_TIME_MASK_HIGH >> 24);
890 rem = (usec % interval) & BEACON_TIME_MASK_LOW;
891
892 return (quot << 24) + rem;
893 }
894
895 /* base is usually what we get from ucode with each received frame,
896 * the same as HW timer counter counting down
897 */
898
899 static __le32 iwl4965_add_beacon_time(u32 base, u32 addon, u32 beacon_interval)
900 {
901 u32 base_low = base & BEACON_TIME_MASK_LOW;
902 u32 addon_low = addon & BEACON_TIME_MASK_LOW;
903 u32 interval = beacon_interval * TIME_UNIT;
904 u32 res = (base & BEACON_TIME_MASK_HIGH) +
905 (addon & BEACON_TIME_MASK_HIGH);
906
907 if (base_low > addon_low)
908 res += base_low - addon_low;
909 else if (base_low < addon_low) {
910 res += interval + base_low - addon_low;
911 res += (1 << 24);
912 } else
913 res += (1 << 24);
914
915 return cpu_to_le32(res);
916 }
917
918 static int iwl4965_get_measurement(struct iwl_priv *priv,
919 struct ieee80211_measurement_params *params,
920 u8 type)
921 {
922 struct iwl4965_spectrum_cmd spectrum;
923 struct iwl_rx_packet *res;
924 struct iwl_host_cmd cmd = {
925 .id = REPLY_SPECTRUM_MEASUREMENT_CMD,
926 .data = (void *)&spectrum,
927 .meta.flags = CMD_WANT_SKB,
928 };
929 u32 add_time = le64_to_cpu(params->start_time);
930 int rc;
931 int spectrum_resp_status;
932 int duration = le16_to_cpu(params->duration);
933
934 if (iwl_is_associated(priv))
935 add_time =
936 iwl4965_usecs_to_beacons(
937 le64_to_cpu(params->start_time) - priv->last_tsf,
938 le16_to_cpu(priv->rxon_timing.beacon_interval));
939
940 memset(&spectrum, 0, sizeof(spectrum));
941
942 spectrum.channel_count = cpu_to_le16(1);
943 spectrum.flags =
944 RXON_FLG_TSF2HOST_MSK | RXON_FLG_ANT_A_MSK | RXON_FLG_DIS_DIV_MSK;
945 spectrum.filter_flags = MEASUREMENT_FILTER_FLAG;
946 cmd.len = sizeof(spectrum);
947 spectrum.len = cpu_to_le16(cmd.len - sizeof(spectrum.len));
948
949 if (iwl_is_associated(priv))
950 spectrum.start_time =
951 iwl4965_add_beacon_time(priv->last_beacon_time,
952 add_time,
953 le16_to_cpu(priv->rxon_timing.beacon_interval));
954 else
955 spectrum.start_time = 0;
956
957 spectrum.channels[0].duration = cpu_to_le32(duration * TIME_UNIT);
958 spectrum.channels[0].channel = params->channel;
959 spectrum.channels[0].type = type;
960 if (priv->active_rxon.flags & RXON_FLG_BAND_24G_MSK)
961 spectrum.flags |= RXON_FLG_BAND_24G_MSK |
962 RXON_FLG_AUTO_DETECT_MSK | RXON_FLG_TGG_PROTECT_MSK;
963
964 rc = iwl_send_cmd_sync(priv, &cmd);
965 if (rc)
966 return rc;
967
968 res = (struct iwl_rx_packet *)cmd.meta.u.skb->data;
969 if (res->hdr.flags & IWL_CMD_FAILED_MSK) {
970 IWL_ERROR("Bad return from REPLY_RX_ON_ASSOC command\n");
971 rc = -EIO;
972 }
973
974 spectrum_resp_status = le16_to_cpu(res->u.spectrum.status);
975 switch (spectrum_resp_status) {
976 case 0: /* Command will be handled */
977 if (res->u.spectrum.id != 0xff) {
978 IWL_DEBUG_INFO
979 ("Replaced existing measurement: %d\n",
980 res->u.spectrum.id);
981 priv->measurement_status &= ~MEASUREMENT_READY;
982 }
983 priv->measurement_status |= MEASUREMENT_ACTIVE;
984 rc = 0;
985 break;
986
987 case 1: /* Command will not be handled */
988 rc = -EAGAIN;
989 break;
990 }
991
992 dev_kfree_skb_any(cmd.meta.u.skb);
993
994 return rc;
995 }
996 #endif
997
998 /******************************************************************************
999 *
1000 * Generic RX handler implementations
1001 *
1002 ******************************************************************************/
1003 static void iwl_rx_reply_alive(struct iwl_priv *priv,
1004 struct iwl_rx_mem_buffer *rxb)
1005 {
1006 struct iwl_rx_packet *pkt = (struct iwl_rx_packet *)rxb->skb->data;
1007 struct iwl_alive_resp *palive;
1008 struct delayed_work *pwork;
1009
1010 palive = &pkt->u.alive_frame;
1011
1012 IWL_DEBUG_INFO("Alive ucode status 0x%08X revision "
1013 "0x%01X 0x%01X\n",
1014 palive->is_valid, palive->ver_type,
1015 palive->ver_subtype);
1016
1017 if (palive->ver_subtype == INITIALIZE_SUBTYPE) {
1018 IWL_DEBUG_INFO("Initialization Alive received.\n");
1019 memcpy(&priv->card_alive_init,
1020 &pkt->u.alive_frame,
1021 sizeof(struct iwl_init_alive_resp));
1022 pwork = &priv->init_alive_start;
1023 } else {
1024 IWL_DEBUG_INFO("Runtime Alive received.\n");
1025 memcpy(&priv->card_alive, &pkt->u.alive_frame,
1026 sizeof(struct iwl_alive_resp));
1027 pwork = &priv->alive_start;
1028 }
1029
1030 /* We delay the ALIVE response by 5ms to
1031 * give the HW RF Kill time to activate... */
1032 if (palive->is_valid == UCODE_VALID_OK)
1033 queue_delayed_work(priv->workqueue, pwork,
1034 msecs_to_jiffies(5));
1035 else
1036 IWL_WARNING("uCode did not respond OK.\n");
1037 }
1038
1039 static void iwl4965_rx_reply_error(struct iwl_priv *priv,
1040 struct iwl_rx_mem_buffer *rxb)
1041 {
1042 struct iwl_rx_packet *pkt = (struct iwl_rx_packet *)rxb->skb->data;
1043
1044 IWL_ERROR("Error Reply type 0x%08X cmd %s (0x%02X) "
1045 "seq 0x%04X ser 0x%08X\n",
1046 le32_to_cpu(pkt->u.err_resp.error_type),
1047 get_cmd_string(pkt->u.err_resp.cmd_id),
1048 pkt->u.err_resp.cmd_id,
1049 le16_to_cpu(pkt->u.err_resp.bad_cmd_seq_num),
1050 le32_to_cpu(pkt->u.err_resp.error_info));
1051 }
1052
1053 #define TX_STATUS_ENTRY(x) case TX_STATUS_FAIL_ ## x: return #x
1054
1055 static void iwl4965_rx_csa(struct iwl_priv *priv, struct iwl_rx_mem_buffer *rxb)
1056 {
1057 struct iwl_rx_packet *pkt = (struct iwl_rx_packet *)rxb->skb->data;
1058 struct iwl_rxon_cmd *rxon = (void *)&priv->active_rxon;
1059 struct iwl4965_csa_notification *csa = &(pkt->u.csa_notif);
1060 IWL_DEBUG_11H("CSA notif: channel %d, status %d\n",
1061 le16_to_cpu(csa->channel), le32_to_cpu(csa->status));
1062 rxon->channel = csa->channel;
1063 priv->staging_rxon.channel = csa->channel;
1064 }
1065
1066 static void iwl4965_rx_spectrum_measure_notif(struct iwl_priv *priv,
1067 struct iwl_rx_mem_buffer *rxb)
1068 {
1069 #ifdef CONFIG_IWL4965_SPECTRUM_MEASUREMENT
1070 struct iwl_rx_packet *pkt = (struct iwl_rx_packet *)rxb->skb->data;
1071 struct iwl4965_spectrum_notification *report = &(pkt->u.spectrum_notif);
1072
1073 if (!report->state) {
1074 IWL_DEBUG(IWL_DL_11H,
1075 "Spectrum Measure Notification: Start\n");
1076 return;
1077 }
1078
1079 memcpy(&priv->measure_report, report, sizeof(*report));
1080 priv->measurement_status |= MEASUREMENT_READY;
1081 #endif
1082 }
1083
1084 static void iwl4965_rx_pm_sleep_notif(struct iwl_priv *priv,
1085 struct iwl_rx_mem_buffer *rxb)
1086 {
1087 #ifdef CONFIG_IWLWIFI_DEBUG
1088 struct iwl_rx_packet *pkt = (struct iwl_rx_packet *)rxb->skb->data;
1089 struct iwl4965_sleep_notification *sleep = &(pkt->u.sleep_notif);
1090 IWL_DEBUG_RX("sleep mode: %d, src: %d\n",
1091 sleep->pm_sleep_mode, sleep->pm_wakeup_src);
1092 #endif
1093 }
1094
1095 static void iwl4965_rx_pm_debug_statistics_notif(struct iwl_priv *priv,
1096 struct iwl_rx_mem_buffer *rxb)
1097 {
1098 struct iwl_rx_packet *pkt = (struct iwl_rx_packet *)rxb->skb->data;
1099 IWL_DEBUG_RADIO("Dumping %d bytes of unhandled "
1100 "notification for %s:\n",
1101 le32_to_cpu(pkt->len), get_cmd_string(pkt->hdr.cmd));
1102 iwl_print_hex_dump(priv, IWL_DL_RADIO, pkt->u.raw, le32_to_cpu(pkt->len));
1103 }
1104
1105 static void iwl4965_bg_beacon_update(struct work_struct *work)
1106 {
1107 struct iwl_priv *priv =
1108 container_of(work, struct iwl_priv, beacon_update);
1109 struct sk_buff *beacon;
1110
1111 /* Pull updated AP beacon from mac80211. will fail if not in AP mode */
1112 beacon = ieee80211_beacon_get(priv->hw, priv->vif);
1113
1114 if (!beacon) {
1115 IWL_ERROR("update beacon failed\n");
1116 return;
1117 }
1118
1119 mutex_lock(&priv->mutex);
1120 /* new beacon skb is allocated every time; dispose previous.*/
1121 if (priv->ibss_beacon)
1122 dev_kfree_skb(priv->ibss_beacon);
1123
1124 priv->ibss_beacon = beacon;
1125 mutex_unlock(&priv->mutex);
1126
1127 iwl4965_send_beacon_cmd(priv);
1128 }
1129
1130 /**
1131 * iwl4965_bg_statistics_periodic - Timer callback to queue statistics
1132 *
1133 * This callback is provided in order to send a statistics request.
1134 *
1135 * This timer function is continually reset to execute within
1136 * REG_RECALIB_PERIOD seconds since the last STATISTICS_NOTIFICATION
1137 * was received. We need to ensure we receive the statistics in order
1138 * to update the temperature used for calibrating the TXPOWER.
1139 */
1140 static void iwl4965_bg_statistics_periodic(unsigned long data)
1141 {
1142 struct iwl_priv *priv = (struct iwl_priv *)data;
1143
1144 if (test_bit(STATUS_EXIT_PENDING, &priv->status))
1145 return;
1146
1147 iwl_send_statistics_request(priv, CMD_ASYNC);
1148 }
1149
1150 static void iwl4965_rx_beacon_notif(struct iwl_priv *priv,
1151 struct iwl_rx_mem_buffer *rxb)
1152 {
1153 #ifdef CONFIG_IWLWIFI_DEBUG
1154 struct iwl_rx_packet *pkt = (struct iwl_rx_packet *)rxb->skb->data;
1155 struct iwl4965_beacon_notif *beacon = &(pkt->u.beacon_status);
1156 u8 rate = iwl_hw_get_rate(beacon->beacon_notify_hdr.rate_n_flags);
1157
1158 IWL_DEBUG_RX("beacon status %x retries %d iss %d "
1159 "tsf %d %d rate %d\n",
1160 le32_to_cpu(beacon->beacon_notify_hdr.u.status) & TX_STATUS_MSK,
1161 beacon->beacon_notify_hdr.failure_frame,
1162 le32_to_cpu(beacon->ibss_mgr_status),
1163 le32_to_cpu(beacon->high_tsf),
1164 le32_to_cpu(beacon->low_tsf), rate);
1165 #endif
1166
1167 if ((priv->iw_mode == IEEE80211_IF_TYPE_AP) &&
1168 (!test_bit(STATUS_EXIT_PENDING, &priv->status)))
1169 queue_work(priv->workqueue, &priv->beacon_update);
1170 }
1171
1172 /* Handle notification from uCode that card's power state is changing
1173 * due to software, hardware, or critical temperature RFKILL */
1174 static void iwl4965_rx_card_state_notif(struct iwl_priv *priv,
1175 struct iwl_rx_mem_buffer *rxb)
1176 {
1177 struct iwl_rx_packet *pkt = (struct iwl_rx_packet *)rxb->skb->data;
1178 u32 flags = le32_to_cpu(pkt->u.card_state_notif.flags);
1179 unsigned long status = priv->status;
1180
1181 IWL_DEBUG_RF_KILL("Card state received: HW:%s SW:%s\n",
1182 (flags & HW_CARD_DISABLED) ? "Kill" : "On",
1183 (flags & SW_CARD_DISABLED) ? "Kill" : "On");
1184
1185 if (flags & (SW_CARD_DISABLED | HW_CARD_DISABLED |
1186 RF_CARD_DISABLED)) {
1187
1188 iwl_write32(priv, CSR_UCODE_DRV_GP1_SET,
1189 CSR_UCODE_DRV_GP1_BIT_CMD_BLOCKED);
1190
1191 if (!iwl_grab_nic_access(priv)) {
1192 iwl_write_direct32(
1193 priv, HBUS_TARG_MBX_C,
1194 HBUS_TARG_MBX_C_REG_BIT_CMD_BLOCKED);
1195
1196 iwl_release_nic_access(priv);
1197 }
1198
1199 if (!(flags & RXON_CARD_DISABLED)) {
1200 iwl_write32(priv, CSR_UCODE_DRV_GP1_CLR,
1201 CSR_UCODE_DRV_GP1_BIT_CMD_BLOCKED);
1202 if (!iwl_grab_nic_access(priv)) {
1203 iwl_write_direct32(
1204 priv, HBUS_TARG_MBX_C,
1205 HBUS_TARG_MBX_C_REG_BIT_CMD_BLOCKED);
1206
1207 iwl_release_nic_access(priv);
1208 }
1209 }
1210
1211 if (flags & RF_CARD_DISABLED) {
1212 iwl_write32(priv, CSR_UCODE_DRV_GP1_SET,
1213 CSR_UCODE_DRV_GP1_REG_BIT_CT_KILL_EXIT);
1214 iwl_read32(priv, CSR_UCODE_DRV_GP1);
1215 if (!iwl_grab_nic_access(priv))
1216 iwl_release_nic_access(priv);
1217 }
1218 }
1219
1220 if (flags & HW_CARD_DISABLED)
1221 set_bit(STATUS_RF_KILL_HW, &priv->status);
1222 else
1223 clear_bit(STATUS_RF_KILL_HW, &priv->status);
1224
1225
1226 if (flags & SW_CARD_DISABLED)
1227 set_bit(STATUS_RF_KILL_SW, &priv->status);
1228 else
1229 clear_bit(STATUS_RF_KILL_SW, &priv->status);
1230
1231 if (!(flags & RXON_CARD_DISABLED))
1232 iwl_scan_cancel(priv);
1233
1234 if ((test_bit(STATUS_RF_KILL_HW, &status) !=
1235 test_bit(STATUS_RF_KILL_HW, &priv->status)) ||
1236 (test_bit(STATUS_RF_KILL_SW, &status) !=
1237 test_bit(STATUS_RF_KILL_SW, &priv->status)))
1238 queue_work(priv->workqueue, &priv->rf_kill);
1239 else
1240 wake_up_interruptible(&priv->wait_command_queue);
1241 }
1242
1243 /**
1244 * iwl4965_setup_rx_handlers - Initialize Rx handler callbacks
1245 *
1246 * Setup the RX handlers for each of the reply types sent from the uCode
1247 * to the host.
1248 *
1249 * This function chains into the hardware specific files for them to setup
1250 * any hardware specific handlers as well.
1251 */
1252 static void iwl_setup_rx_handlers(struct iwl_priv *priv)
1253 {
1254 priv->rx_handlers[REPLY_ALIVE] = iwl_rx_reply_alive;
1255 priv->rx_handlers[REPLY_ERROR] = iwl4965_rx_reply_error;
1256 priv->rx_handlers[CHANNEL_SWITCH_NOTIFICATION] = iwl4965_rx_csa;
1257 priv->rx_handlers[SPECTRUM_MEASURE_NOTIFICATION] =
1258 iwl4965_rx_spectrum_measure_notif;
1259 priv->rx_handlers[PM_SLEEP_NOTIFICATION] = iwl4965_rx_pm_sleep_notif;
1260 priv->rx_handlers[PM_DEBUG_STATISTIC_NOTIFIC] =
1261 iwl4965_rx_pm_debug_statistics_notif;
1262 priv->rx_handlers[BEACON_NOTIFICATION] = iwl4965_rx_beacon_notif;
1263
1264 /*
1265 * The same handler is used for both the REPLY to a discrete
1266 * statistics request from the host as well as for the periodic
1267 * statistics notifications (after received beacons) from the uCode.
1268 */
1269 priv->rx_handlers[REPLY_STATISTICS_CMD] = iwl_rx_statistics;
1270 priv->rx_handlers[STATISTICS_NOTIFICATION] = iwl_rx_statistics;
1271
1272 iwl_setup_rx_scan_handlers(priv);
1273
1274 /* status change handler */
1275 priv->rx_handlers[CARD_STATE_NOTIFICATION] = iwl4965_rx_card_state_notif;
1276
1277 priv->rx_handlers[MISSED_BEACONS_NOTIFICATION] =
1278 iwl_rx_missed_beacon_notif;
1279 /* Rx handlers */
1280 priv->rx_handlers[REPLY_RX_PHY_CMD] = iwl_rx_reply_rx_phy;
1281 priv->rx_handlers[REPLY_RX_MPDU_CMD] = iwl_rx_reply_rx;
1282 /* block ack */
1283 priv->rx_handlers[REPLY_COMPRESSED_BA] = iwl_rx_reply_compressed_ba;
1284 /* Set up hardware specific Rx handlers */
1285 priv->cfg->ops->lib->rx_handler_setup(priv);
1286 }
1287
1288 /*
1289 * this should be called while priv->lock is locked
1290 */
1291 static void __iwl_rx_replenish(struct iwl_priv *priv)
1292 {
1293 iwl_rx_allocate(priv);
1294 iwl_rx_queue_restock(priv);
1295 }
1296
1297
1298 /**
1299 * iwl_rx_handle - Main entry function for receiving responses from uCode
1300 *
1301 * Uses the priv->rx_handlers callback function array to invoke
1302 * the appropriate handlers, including command responses,
1303 * frame-received notifications, and other notifications.
1304 */
1305 void iwl_rx_handle(struct iwl_priv *priv)
1306 {
1307 struct iwl_rx_mem_buffer *rxb;
1308 struct iwl_rx_packet *pkt;
1309 struct iwl_rx_queue *rxq = &priv->rxq;
1310 u32 r, i;
1311 int reclaim;
1312 unsigned long flags;
1313 u8 fill_rx = 0;
1314 u32 count = 8;
1315
1316 /* uCode's read index (stored in shared DRAM) indicates the last Rx
1317 * buffer that the driver may process (last buffer filled by ucode). */
1318 r = priv->cfg->ops->lib->shared_mem_rx_idx(priv);
1319 i = rxq->read;
1320
1321 /* Rx interrupt, but nothing sent from uCode */
1322 if (i == r)
1323 IWL_DEBUG(IWL_DL_RX, "r = %d, i = %d\n", r, i);
1324
1325 if (iwl_rx_queue_space(rxq) > (RX_QUEUE_SIZE / 2))
1326 fill_rx = 1;
1327
1328 while (i != r) {
1329 rxb = rxq->queue[i];
1330
1331 /* If an RXB doesn't have a Rx queue slot associated with it,
1332 * then a bug has been introduced in the queue refilling
1333 * routines -- catch it here */
1334 BUG_ON(rxb == NULL);
1335
1336 rxq->queue[i] = NULL;
1337
1338 pci_dma_sync_single_for_cpu(priv->pci_dev, rxb->dma_addr,
1339 priv->hw_params.rx_buf_size,
1340 PCI_DMA_FROMDEVICE);
1341 pkt = (struct iwl_rx_packet *)rxb->skb->data;
1342
1343 /* Reclaim a command buffer only if this packet is a response
1344 * to a (driver-originated) command.
1345 * If the packet (e.g. Rx frame) originated from uCode,
1346 * there is no command buffer to reclaim.
1347 * Ucode should set SEQ_RX_FRAME bit if ucode-originated,
1348 * but apparently a few don't get set; catch them here. */
1349 reclaim = !(pkt->hdr.sequence & SEQ_RX_FRAME) &&
1350 (pkt->hdr.cmd != REPLY_RX_PHY_CMD) &&
1351 (pkt->hdr.cmd != REPLY_RX) &&
1352 (pkt->hdr.cmd != REPLY_COMPRESSED_BA) &&
1353 (pkt->hdr.cmd != STATISTICS_NOTIFICATION) &&
1354 (pkt->hdr.cmd != REPLY_TX);
1355
1356 /* Based on type of command response or notification,
1357 * handle those that need handling via function in
1358 * rx_handlers table. See iwl4965_setup_rx_handlers() */
1359 if (priv->rx_handlers[pkt->hdr.cmd]) {
1360 IWL_DEBUG(IWL_DL_RX, "r = %d, i = %d, %s, 0x%02x\n", r,
1361 i, get_cmd_string(pkt->hdr.cmd), pkt->hdr.cmd);
1362 priv->rx_handlers[pkt->hdr.cmd] (priv, rxb);
1363 } else {
1364 /* No handling needed */
1365 IWL_DEBUG(IWL_DL_RX,
1366 "r %d i %d No handler needed for %s, 0x%02x\n",
1367 r, i, get_cmd_string(pkt->hdr.cmd),
1368 pkt->hdr.cmd);
1369 }
1370
1371 if (reclaim) {
1372 /* Invoke any callbacks, transfer the skb to caller, and
1373 * fire off the (possibly) blocking iwl_send_cmd()
1374 * as we reclaim the driver command queue */
1375 if (rxb && rxb->skb)
1376 iwl_tx_cmd_complete(priv, rxb);
1377 else
1378 IWL_WARNING("Claim null rxb?\n");
1379 }
1380
1381 /* For now we just don't re-use anything. We can tweak this
1382 * later to try and re-use notification packets and SKBs that
1383 * fail to Rx correctly */
1384 if (rxb->skb != NULL) {
1385 priv->alloc_rxb_skb--;
1386 dev_kfree_skb_any(rxb->skb);
1387 rxb->skb = NULL;
1388 }
1389
1390 pci_unmap_single(priv->pci_dev, rxb->dma_addr,
1391 priv->hw_params.rx_buf_size,
1392 PCI_DMA_FROMDEVICE);
1393 spin_lock_irqsave(&rxq->lock, flags);
1394 list_add_tail(&rxb->list, &priv->rxq.rx_used);
1395 spin_unlock_irqrestore(&rxq->lock, flags);
1396 i = (i + 1) & RX_QUEUE_MASK;
1397 /* If there are a lot of unused frames,
1398 * restock the Rx queue so ucode wont assert. */
1399 if (fill_rx) {
1400 count++;
1401 if (count >= 8) {
1402 priv->rxq.read = i;
1403 __iwl_rx_replenish(priv);
1404 count = 0;
1405 }
1406 }
1407 }
1408
1409 /* Backtrack one entry */
1410 priv->rxq.read = i;
1411 iwl_rx_queue_restock(priv);
1412 }
1413
1414 #ifdef CONFIG_IWLWIFI_DEBUG
1415 static void iwl4965_print_rx_config_cmd(struct iwl_priv *priv)
1416 {
1417 struct iwl_rxon_cmd *rxon = &priv->staging_rxon;
1418 DECLARE_MAC_BUF(mac);
1419
1420 IWL_DEBUG_RADIO("RX CONFIG:\n");
1421 iwl_print_hex_dump(priv, IWL_DL_RADIO, (u8 *) rxon, sizeof(*rxon));
1422 IWL_DEBUG_RADIO("u16 channel: 0x%x\n", le16_to_cpu(rxon->channel));
1423 IWL_DEBUG_RADIO("u32 flags: 0x%08X\n", le32_to_cpu(rxon->flags));
1424 IWL_DEBUG_RADIO("u32 filter_flags: 0x%08x\n",
1425 le32_to_cpu(rxon->filter_flags));
1426 IWL_DEBUG_RADIO("u8 dev_type: 0x%x\n", rxon->dev_type);
1427 IWL_DEBUG_RADIO("u8 ofdm_basic_rates: 0x%02x\n",
1428 rxon->ofdm_basic_rates);
1429 IWL_DEBUG_RADIO("u8 cck_basic_rates: 0x%02x\n", rxon->cck_basic_rates);
1430 IWL_DEBUG_RADIO("u8[6] node_addr: %s\n",
1431 print_mac(mac, rxon->node_addr));
1432 IWL_DEBUG_RADIO("u8[6] bssid_addr: %s\n",
1433 print_mac(mac, rxon->bssid_addr));
1434 IWL_DEBUG_RADIO("u16 assoc_id: 0x%x\n", le16_to_cpu(rxon->assoc_id));
1435 }
1436 #endif
1437
1438 static void iwl4965_enable_interrupts(struct iwl_priv *priv)
1439 {
1440 IWL_DEBUG_ISR("Enabling interrupts\n");
1441 set_bit(STATUS_INT_ENABLED, &priv->status);
1442 iwl_write32(priv, CSR_INT_MASK, CSR_INI_SET_MASK);
1443 }
1444
1445 /* call this function to flush any scheduled tasklet */
1446 static inline void iwl_synchronize_irq(struct iwl_priv *priv)
1447 {
1448 /* wait to make sure we flush pedding tasklet*/
1449 synchronize_irq(priv->pci_dev->irq);
1450 tasklet_kill(&priv->irq_tasklet);
1451 }
1452
1453 static inline void iwl4965_disable_interrupts(struct iwl_priv *priv)
1454 {
1455 clear_bit(STATUS_INT_ENABLED, &priv->status);
1456
1457 /* disable interrupts from uCode/NIC to host */
1458 iwl_write32(priv, CSR_INT_MASK, 0x00000000);
1459
1460 /* acknowledge/clear/reset any interrupts still pending
1461 * from uCode or flow handler (Rx/Tx DMA) */
1462 iwl_write32(priv, CSR_INT, 0xffffffff);
1463 iwl_write32(priv, CSR_FH_INT_STATUS, 0xffffffff);
1464 IWL_DEBUG_ISR("Disabled interrupts\n");
1465 }
1466
1467
1468 /**
1469 * iwl4965_irq_handle_error - called for HW or SW error interrupt from card
1470 */
1471 static void iwl4965_irq_handle_error(struct iwl_priv *priv)
1472 {
1473 /* Set the FW error flag -- cleared on iwl4965_down */
1474 set_bit(STATUS_FW_ERROR, &priv->status);
1475
1476 /* Cancel currently queued command. */
1477 clear_bit(STATUS_HCMD_ACTIVE, &priv->status);
1478
1479 #ifdef CONFIG_IWLWIFI_DEBUG
1480 if (priv->debug_level & IWL_DL_FW_ERRORS) {
1481 iwl_dump_nic_error_log(priv);
1482 iwl_dump_nic_event_log(priv);
1483 iwl4965_print_rx_config_cmd(priv);
1484 }
1485 #endif
1486
1487 wake_up_interruptible(&priv->wait_command_queue);
1488
1489 /* Keep the restart process from trying to send host
1490 * commands by clearing the INIT status bit */
1491 clear_bit(STATUS_READY, &priv->status);
1492
1493 if (!test_bit(STATUS_EXIT_PENDING, &priv->status)) {
1494 IWL_DEBUG(IWL_DL_FW_ERRORS,
1495 "Restarting adapter due to uCode error.\n");
1496
1497 if (iwl_is_associated(priv)) {
1498 memcpy(&priv->recovery_rxon, &priv->active_rxon,
1499 sizeof(priv->recovery_rxon));
1500 priv->error_recovering = 1;
1501 }
1502 if (priv->cfg->mod_params->restart_fw)
1503 queue_work(priv->workqueue, &priv->restart);
1504 }
1505 }
1506
1507 static void iwl4965_error_recovery(struct iwl_priv *priv)
1508 {
1509 unsigned long flags;
1510
1511 memcpy(&priv->staging_rxon, &priv->recovery_rxon,
1512 sizeof(priv->staging_rxon));
1513 priv->staging_rxon.filter_flags &= ~RXON_FILTER_ASSOC_MSK;
1514 iwl4965_commit_rxon(priv);
1515
1516 iwl_rxon_add_station(priv, priv->bssid, 1);
1517
1518 spin_lock_irqsave(&priv->lock, flags);
1519 priv->assoc_id = le16_to_cpu(priv->staging_rxon.assoc_id);
1520 priv->error_recovering = 0;
1521 spin_unlock_irqrestore(&priv->lock, flags);
1522 }
1523
1524 static void iwl4965_irq_tasklet(struct iwl_priv *priv)
1525 {
1526 u32 inta, handled = 0;
1527 u32 inta_fh;
1528 unsigned long flags;
1529 #ifdef CONFIG_IWLWIFI_DEBUG
1530 u32 inta_mask;
1531 #endif
1532
1533 spin_lock_irqsave(&priv->lock, flags);
1534
1535 /* Ack/clear/reset pending uCode interrupts.
1536 * Note: Some bits in CSR_INT are "OR" of bits in CSR_FH_INT_STATUS,
1537 * and will clear only when CSR_FH_INT_STATUS gets cleared. */
1538 inta = iwl_read32(priv, CSR_INT);
1539 iwl_write32(priv, CSR_INT, inta);
1540
1541 /* Ack/clear/reset pending flow-handler (DMA) interrupts.
1542 * Any new interrupts that happen after this, either while we're
1543 * in this tasklet, or later, will show up in next ISR/tasklet. */
1544 inta_fh = iwl_read32(priv, CSR_FH_INT_STATUS);
1545 iwl_write32(priv, CSR_FH_INT_STATUS, inta_fh);
1546
1547 #ifdef CONFIG_IWLWIFI_DEBUG
1548 if (priv->debug_level & IWL_DL_ISR) {
1549 /* just for debug */
1550 inta_mask = iwl_read32(priv, CSR_INT_MASK);
1551 IWL_DEBUG_ISR("inta 0x%08x, enabled 0x%08x, fh 0x%08x\n",
1552 inta, inta_mask, inta_fh);
1553 }
1554 #endif
1555
1556 /* Since CSR_INT and CSR_FH_INT_STATUS reads and clears are not
1557 * atomic, make sure that inta covers all the interrupts that
1558 * we've discovered, even if FH interrupt came in just after
1559 * reading CSR_INT. */
1560 if (inta_fh & CSR49_FH_INT_RX_MASK)
1561 inta |= CSR_INT_BIT_FH_RX;
1562 if (inta_fh & CSR49_FH_INT_TX_MASK)
1563 inta |= CSR_INT_BIT_FH_TX;
1564
1565 /* Now service all interrupt bits discovered above. */
1566 if (inta & CSR_INT_BIT_HW_ERR) {
1567 IWL_ERROR("Microcode HW error detected. Restarting.\n");
1568
1569 /* Tell the device to stop sending interrupts */
1570 iwl4965_disable_interrupts(priv);
1571
1572 iwl4965_irq_handle_error(priv);
1573
1574 handled |= CSR_INT_BIT_HW_ERR;
1575
1576 spin_unlock_irqrestore(&priv->lock, flags);
1577
1578 return;
1579 }
1580
1581 #ifdef CONFIG_IWLWIFI_DEBUG
1582 if (priv->debug_level & (IWL_DL_ISR)) {
1583 /* NIC fires this, but we don't use it, redundant with WAKEUP */
1584 if (inta & CSR_INT_BIT_SCD)
1585 IWL_DEBUG_ISR("Scheduler finished to transmit "
1586 "the frame/frames.\n");
1587
1588 /* Alive notification via Rx interrupt will do the real work */
1589 if (inta & CSR_INT_BIT_ALIVE)
1590 IWL_DEBUG_ISR("Alive interrupt\n");
1591 }
1592 #endif
1593 /* Safely ignore these bits for debug checks below */
1594 inta &= ~(CSR_INT_BIT_SCD | CSR_INT_BIT_ALIVE);
1595
1596 /* HW RF KILL switch toggled */
1597 if (inta & CSR_INT_BIT_RF_KILL) {
1598 int hw_rf_kill = 0;
1599 if (!(iwl_read32(priv, CSR_GP_CNTRL) &
1600 CSR_GP_CNTRL_REG_FLAG_HW_RF_KILL_SW))
1601 hw_rf_kill = 1;
1602
1603 IWL_DEBUG(IWL_DL_RF_KILL, "RF_KILL bit toggled to %s.\n",
1604 hw_rf_kill ? "disable radio":"enable radio");
1605
1606 /* Queue restart only if RF_KILL switch was set to "kill"
1607 * when we loaded driver, and is now set to "enable".
1608 * After we're Alive, RF_KILL gets handled by
1609 * iwl4965_rx_card_state_notif() */
1610 if (!hw_rf_kill && !test_bit(STATUS_ALIVE, &priv->status)) {
1611 clear_bit(STATUS_RF_KILL_HW, &priv->status);
1612 queue_work(priv->workqueue, &priv->restart);
1613 }
1614
1615 handled |= CSR_INT_BIT_RF_KILL;
1616 }
1617
1618 /* Chip got too hot and stopped itself */
1619 if (inta & CSR_INT_BIT_CT_KILL) {
1620 IWL_ERROR("Microcode CT kill error detected.\n");
1621 handled |= CSR_INT_BIT_CT_KILL;
1622 }
1623
1624 /* Error detected by uCode */
1625 if (inta & CSR_INT_BIT_SW_ERR) {
1626 IWL_ERROR("Microcode SW error detected. Restarting 0x%X.\n",
1627 inta);
1628 iwl4965_irq_handle_error(priv);
1629 handled |= CSR_INT_BIT_SW_ERR;
1630 }
1631
1632 /* uCode wakes up after power-down sleep */
1633 if (inta & CSR_INT_BIT_WAKEUP) {
1634 IWL_DEBUG_ISR("Wakeup interrupt\n");
1635 iwl_rx_queue_update_write_ptr(priv, &priv->rxq);
1636 iwl_txq_update_write_ptr(priv, &priv->txq[0]);
1637 iwl_txq_update_write_ptr(priv, &priv->txq[1]);
1638 iwl_txq_update_write_ptr(priv, &priv->txq[2]);
1639 iwl_txq_update_write_ptr(priv, &priv->txq[3]);
1640 iwl_txq_update_write_ptr(priv, &priv->txq[4]);
1641 iwl_txq_update_write_ptr(priv, &priv->txq[5]);
1642
1643 handled |= CSR_INT_BIT_WAKEUP;
1644 }
1645
1646 /* All uCode command responses, including Tx command responses,
1647 * Rx "responses" (frame-received notification), and other
1648 * notifications from uCode come through here*/
1649 if (inta & (CSR_INT_BIT_FH_RX | CSR_INT_BIT_SW_RX)) {
1650 iwl_rx_handle(priv);
1651 handled |= (CSR_INT_BIT_FH_RX | CSR_INT_BIT_SW_RX);
1652 }
1653
1654 if (inta & CSR_INT_BIT_FH_TX) {
1655 IWL_DEBUG_ISR("Tx interrupt\n");
1656 handled |= CSR_INT_BIT_FH_TX;
1657 /* FH finished to write, send event */
1658 priv->ucode_write_complete = 1;
1659 wake_up_interruptible(&priv->wait_command_queue);
1660 }
1661
1662 if (inta & ~handled)
1663 IWL_ERROR("Unhandled INTA bits 0x%08x\n", inta & ~handled);
1664
1665 if (inta & ~CSR_INI_SET_MASK) {
1666 IWL_WARNING("Disabled INTA bits 0x%08x were pending\n",
1667 inta & ~CSR_INI_SET_MASK);
1668 IWL_WARNING(" with FH_INT = 0x%08x\n", inta_fh);
1669 }
1670
1671 /* Re-enable all interrupts */
1672 /* only Re-enable if diabled by irq */
1673 if (test_bit(STATUS_INT_ENABLED, &priv->status))
1674 iwl4965_enable_interrupts(priv);
1675
1676 #ifdef CONFIG_IWLWIFI_DEBUG
1677 if (priv->debug_level & (IWL_DL_ISR)) {
1678 inta = iwl_read32(priv, CSR_INT);
1679 inta_mask = iwl_read32(priv, CSR_INT_MASK);
1680 inta_fh = iwl_read32(priv, CSR_FH_INT_STATUS);
1681 IWL_DEBUG_ISR("End inta 0x%08x, enabled 0x%08x, fh 0x%08x, "
1682 "flags 0x%08lx\n", inta, inta_mask, inta_fh, flags);
1683 }
1684 #endif
1685 spin_unlock_irqrestore(&priv->lock, flags);
1686 }
1687
1688 static irqreturn_t iwl4965_isr(int irq, void *data)
1689 {
1690 struct iwl_priv *priv = data;
1691 u32 inta, inta_mask;
1692 u32 inta_fh;
1693 if (!priv)
1694 return IRQ_NONE;
1695
1696 spin_lock(&priv->lock);
1697
1698 /* Disable (but don't clear!) interrupts here to avoid
1699 * back-to-back ISRs and sporadic interrupts from our NIC.
1700 * If we have something to service, the tasklet will re-enable ints.
1701 * If we *don't* have something, we'll re-enable before leaving here. */
1702 inta_mask = iwl_read32(priv, CSR_INT_MASK); /* just for debug */
1703 iwl_write32(priv, CSR_INT_MASK, 0x00000000);
1704
1705 /* Discover which interrupts are active/pending */
1706 inta = iwl_read32(priv, CSR_INT);
1707 inta_fh = iwl_read32(priv, CSR_FH_INT_STATUS);
1708
1709 /* Ignore interrupt if there's nothing in NIC to service.
1710 * This may be due to IRQ shared with another device,
1711 * or due to sporadic interrupts thrown from our NIC. */
1712 if (!inta && !inta_fh) {
1713 IWL_DEBUG_ISR("Ignore interrupt, inta == 0, inta_fh == 0\n");
1714 goto none;
1715 }
1716
1717 if ((inta == 0xFFFFFFFF) || ((inta & 0xFFFFFFF0) == 0xa5a5a5a0)) {
1718 /* Hardware disappeared. It might have already raised
1719 * an interrupt */
1720 IWL_WARNING("HARDWARE GONE?? INTA == 0x%080x\n", inta);
1721 goto unplugged;
1722 }
1723
1724 IWL_DEBUG_ISR("ISR inta 0x%08x, enabled 0x%08x, fh 0x%08x\n",
1725 inta, inta_mask, inta_fh);
1726
1727 inta &= ~CSR_INT_BIT_SCD;
1728
1729 /* iwl4965_irq_tasklet() will service interrupts and re-enable them */
1730 if (likely(inta || inta_fh))
1731 tasklet_schedule(&priv->irq_tasklet);
1732
1733 unplugged:
1734 spin_unlock(&priv->lock);
1735 return IRQ_HANDLED;
1736
1737 none:
1738 /* re-enable interrupts here since we don't have anything to service. */
1739 /* only Re-enable if diabled by irq */
1740 if (test_bit(STATUS_INT_ENABLED, &priv->status))
1741 iwl4965_enable_interrupts(priv);
1742 spin_unlock(&priv->lock);
1743 return IRQ_NONE;
1744 }
1745
1746 /******************************************************************************
1747 *
1748 * uCode download functions
1749 *
1750 ******************************************************************************/
1751
1752 static void iwl4965_dealloc_ucode_pci(struct iwl_priv *priv)
1753 {
1754 iwl_free_fw_desc(priv->pci_dev, &priv->ucode_code);
1755 iwl_free_fw_desc(priv->pci_dev, &priv->ucode_data);
1756 iwl_free_fw_desc(priv->pci_dev, &priv->ucode_data_backup);
1757 iwl_free_fw_desc(priv->pci_dev, &priv->ucode_init);
1758 iwl_free_fw_desc(priv->pci_dev, &priv->ucode_init_data);
1759 iwl_free_fw_desc(priv->pci_dev, &priv->ucode_boot);
1760 }
1761
1762 static void iwl4965_nic_start(struct iwl_priv *priv)
1763 {
1764 /* Remove all resets to allow NIC to operate */
1765 iwl_write32(priv, CSR_RESET, 0);
1766 }
1767
1768
1769 /**
1770 * iwl4965_read_ucode - Read uCode images from disk file.
1771 *
1772 * Copy into buffers for card to fetch via bus-mastering
1773 */
1774 static int iwl4965_read_ucode(struct iwl_priv *priv)
1775 {
1776 struct iwl_ucode *ucode;
1777 int ret;
1778 const struct firmware *ucode_raw;
1779 const char *name = priv->cfg->fw_name;
1780 u8 *src;
1781 size_t len;
1782 u32 ver, inst_size, data_size, init_size, init_data_size, boot_size;
1783
1784 /* Ask kernel firmware_class module to get the boot firmware off disk.
1785 * request_firmware() is synchronous, file is in memory on return. */
1786 ret = request_firmware(&ucode_raw, name, &priv->pci_dev->dev);
1787 if (ret < 0) {
1788 IWL_ERROR("%s firmware file req failed: Reason %d\n",
1789 name, ret);
1790 goto error;
1791 }
1792
1793 IWL_DEBUG_INFO("Got firmware '%s' file (%zd bytes) from disk\n",
1794 name, ucode_raw->size);
1795
1796 /* Make sure that we got at least our header! */
1797 if (ucode_raw->size < sizeof(*ucode)) {
1798 IWL_ERROR("File size way too small!\n");
1799 ret = -EINVAL;
1800 goto err_release;
1801 }
1802
1803 /* Data from ucode file: header followed by uCode images */
1804 ucode = (void *)ucode_raw->data;
1805
1806 ver = le32_to_cpu(ucode->ver);
1807 inst_size = le32_to_cpu(ucode->inst_size);
1808 data_size = le32_to_cpu(ucode->data_size);
1809 init_size = le32_to_cpu(ucode->init_size);
1810 init_data_size = le32_to_cpu(ucode->init_data_size);
1811 boot_size = le32_to_cpu(ucode->boot_size);
1812
1813 IWL_DEBUG_INFO("f/w package hdr ucode version = 0x%x\n", ver);
1814 IWL_DEBUG_INFO("f/w package hdr runtime inst size = %u\n",
1815 inst_size);
1816 IWL_DEBUG_INFO("f/w package hdr runtime data size = %u\n",
1817 data_size);
1818 IWL_DEBUG_INFO("f/w package hdr init inst size = %u\n",
1819 init_size);
1820 IWL_DEBUG_INFO("f/w package hdr init data size = %u\n",
1821 init_data_size);
1822 IWL_DEBUG_INFO("f/w package hdr boot inst size = %u\n",
1823 boot_size);
1824
1825 /* Verify size of file vs. image size info in file's header */
1826 if (ucode_raw->size < sizeof(*ucode) +
1827 inst_size + data_size + init_size +
1828 init_data_size + boot_size) {
1829
1830 IWL_DEBUG_INFO("uCode file size %d too small\n",
1831 (int)ucode_raw->size);
1832 ret = -EINVAL;
1833 goto err_release;
1834 }
1835
1836 /* Verify that uCode images will fit in card's SRAM */
1837 if (inst_size > priv->hw_params.max_inst_size) {
1838 IWL_DEBUG_INFO("uCode instr len %d too large to fit in\n",
1839 inst_size);
1840 ret = -EINVAL;
1841 goto err_release;
1842 }
1843
1844 if (data_size > priv->hw_params.max_data_size) {
1845 IWL_DEBUG_INFO("uCode data len %d too large to fit in\n",
1846 data_size);
1847 ret = -EINVAL;
1848 goto err_release;
1849 }
1850 if (init_size > priv->hw_params.max_inst_size) {
1851 IWL_DEBUG_INFO
1852 ("uCode init instr len %d too large to fit in\n",
1853 init_size);
1854 ret = -EINVAL;
1855 goto err_release;
1856 }
1857 if (init_data_size > priv->hw_params.max_data_size) {
1858 IWL_DEBUG_INFO
1859 ("uCode init data len %d too large to fit in\n",
1860 init_data_size);
1861 ret = -EINVAL;
1862 goto err_release;
1863 }
1864 if (boot_size > priv->hw_params.max_bsm_size) {
1865 IWL_DEBUG_INFO
1866 ("uCode boot instr len %d too large to fit in\n",
1867 boot_size);
1868 ret = -EINVAL;
1869 goto err_release;
1870 }
1871
1872 /* Allocate ucode buffers for card's bus-master loading ... */
1873
1874 /* Runtime instructions and 2 copies of data:
1875 * 1) unmodified from disk
1876 * 2) backup cache for save/restore during power-downs */
1877 priv->ucode_code.len = inst_size;
1878 iwl_alloc_fw_desc(priv->pci_dev, &priv->ucode_code);
1879
1880 priv->ucode_data.len = data_size;
1881 iwl_alloc_fw_desc(priv->pci_dev, &priv->ucode_data);
1882
1883 priv->ucode_data_backup.len = data_size;
1884 iwl_alloc_fw_desc(priv->pci_dev, &priv->ucode_data_backup);
1885
1886 /* Initialization instructions and data */
1887 if (init_size && init_data_size) {
1888 priv->ucode_init.len = init_size;
1889 iwl_alloc_fw_desc(priv->pci_dev, &priv->ucode_init);
1890
1891 priv->ucode_init_data.len = init_data_size;
1892 iwl_alloc_fw_desc(priv->pci_dev, &priv->ucode_init_data);
1893
1894 if (!priv->ucode_init.v_addr || !priv->ucode_init_data.v_addr)
1895 goto err_pci_alloc;
1896 }
1897
1898 /* Bootstrap (instructions only, no data) */
1899 if (boot_size) {
1900 priv->ucode_boot.len = boot_size;
1901 iwl_alloc_fw_desc(priv->pci_dev, &priv->ucode_boot);
1902
1903 if (!priv->ucode_boot.v_addr)
1904 goto err_pci_alloc;
1905 }
1906
1907 /* Copy images into buffers for card's bus-master reads ... */
1908
1909 /* Runtime instructions (first block of data in file) */
1910 src = &ucode->data[0];
1911 len = priv->ucode_code.len;
1912 IWL_DEBUG_INFO("Copying (but not loading) uCode instr len %Zd\n", len);
1913 memcpy(priv->ucode_code.v_addr, src, len);
1914 IWL_DEBUG_INFO("uCode instr buf vaddr = 0x%p, paddr = 0x%08x\n",
1915 priv->ucode_code.v_addr, (u32)priv->ucode_code.p_addr);
1916
1917 /* Runtime data (2nd block)
1918 * NOTE: Copy into backup buffer will be done in iwl4965_up() */
1919 src = &ucode->data[inst_size];
1920 len = priv->ucode_data.len;
1921 IWL_DEBUG_INFO("Copying (but not loading) uCode data len %Zd\n", len);
1922 memcpy(priv->ucode_data.v_addr, src, len);
1923 memcpy(priv->ucode_data_backup.v_addr, src, len);
1924
1925 /* Initialization instructions (3rd block) */
1926 if (init_size) {
1927 src = &ucode->data[inst_size + data_size];
1928 len = priv->ucode_init.len;
1929 IWL_DEBUG_INFO("Copying (but not loading) init instr len %Zd\n",
1930 len);
1931 memcpy(priv->ucode_init.v_addr, src, len);
1932 }
1933
1934 /* Initialization data (4th block) */
1935 if (init_data_size) {
1936 src = &ucode->data[inst_size + data_size + init_size];
1937 len = priv->ucode_init_data.len;
1938 IWL_DEBUG_INFO("Copying (but not loading) init data len %Zd\n",
1939 len);
1940 memcpy(priv->ucode_init_data.v_addr, src, len);
1941 }
1942
1943 /* Bootstrap instructions (5th block) */
1944 src = &ucode->data[inst_size + data_size + init_size + init_data_size];
1945 len = priv->ucode_boot.len;
1946 IWL_DEBUG_INFO("Copying (but not loading) boot instr len %Zd\n", len);
1947 memcpy(priv->ucode_boot.v_addr, src, len);
1948
1949 /* We have our copies now, allow OS release its copies */
1950 release_firmware(ucode_raw);
1951 return 0;
1952
1953 err_pci_alloc:
1954 IWL_ERROR("failed to allocate pci memory\n");
1955 ret = -ENOMEM;
1956 iwl4965_dealloc_ucode_pci(priv);
1957
1958 err_release:
1959 release_firmware(ucode_raw);
1960
1961 error:
1962 return ret;
1963 }
1964
1965 /**
1966 * iwl_alive_start - called after REPLY_ALIVE notification received
1967 * from protocol/runtime uCode (initialization uCode's
1968 * Alive gets handled by iwl_init_alive_start()).
1969 */
1970 static void iwl_alive_start(struct iwl_priv *priv)
1971 {
1972 int ret = 0;
1973
1974 IWL_DEBUG_INFO("Runtime Alive received.\n");
1975
1976 if (priv->card_alive.is_valid != UCODE_VALID_OK) {
1977 /* We had an error bringing up the hardware, so take it
1978 * all the way back down so we can try again */
1979 IWL_DEBUG_INFO("Alive failed.\n");
1980 goto restart;
1981 }
1982
1983 /* Initialize uCode has loaded Runtime uCode ... verify inst image.
1984 * This is a paranoid check, because we would not have gotten the
1985 * "runtime" alive if code weren't properly loaded. */
1986 if (iwl_verify_ucode(priv)) {
1987 /* Runtime instruction load was bad;
1988 * take it all the way back down so we can try again */
1989 IWL_DEBUG_INFO("Bad runtime uCode load.\n");
1990 goto restart;
1991 }
1992
1993 iwl_clear_stations_table(priv);
1994 ret = priv->cfg->ops->lib->alive_notify(priv);
1995 if (ret) {
1996 IWL_WARNING("Could not complete ALIVE transition [ntf]: %d\n",
1997 ret);
1998 goto restart;
1999 }
2000
2001 /* After the ALIVE response, we can send host commands to 4965 uCode */
2002 set_bit(STATUS_ALIVE, &priv->status);
2003
2004 if (iwl_is_rfkill(priv))
2005 return;
2006
2007 ieee80211_wake_queues(priv->hw);
2008
2009 priv->active_rate = priv->rates_mask;
2010 priv->active_rate_basic = priv->rates_mask & IWL_BASIC_RATES_MASK;
2011
2012 if (iwl_is_associated(priv)) {
2013 struct iwl_rxon_cmd *active_rxon =
2014 (struct iwl_rxon_cmd *)&priv->active_rxon;
2015
2016 memcpy(&priv->staging_rxon, &priv->active_rxon,
2017 sizeof(priv->staging_rxon));
2018 active_rxon->filter_flags &= ~RXON_FILTER_ASSOC_MSK;
2019 } else {
2020 /* Initialize our rx_config data */
2021 iwl4965_connection_init_rx_config(priv);
2022 memcpy(priv->staging_rxon.node_addr, priv->mac_addr, ETH_ALEN);
2023 }
2024
2025 /* Configure Bluetooth device coexistence support */
2026 iwl4965_send_bt_config(priv);
2027
2028 iwl_reset_run_time_calib(priv);
2029
2030 /* Configure the adapter for unassociated operation */
2031 iwl4965_commit_rxon(priv);
2032
2033 /* At this point, the NIC is initialized and operational */
2034 iwl_rf_kill_ct_config(priv);
2035
2036 iwl_leds_register(priv);
2037
2038 IWL_DEBUG_INFO("ALIVE processing complete.\n");
2039 set_bit(STATUS_READY, &priv->status);
2040 wake_up_interruptible(&priv->wait_command_queue);
2041
2042 if (priv->error_recovering)
2043 iwl4965_error_recovery(priv);
2044
2045 iwl_power_update_mode(priv, 1);
2046 ieee80211_notify_mac(priv->hw, IEEE80211_NOTIFY_RE_ASSOC);
2047
2048 if (test_and_clear_bit(STATUS_MODE_PENDING, &priv->status))
2049 iwl4965_set_mode(priv, priv->iw_mode);
2050
2051 return;
2052
2053 restart:
2054 queue_work(priv->workqueue, &priv->restart);
2055 }
2056
2057 static void iwl_cancel_deferred_work(struct iwl_priv *priv);
2058
2059 static void __iwl4965_down(struct iwl_priv *priv)
2060 {
2061 unsigned long flags;
2062 int exit_pending = test_bit(STATUS_EXIT_PENDING, &priv->status);
2063
2064 IWL_DEBUG_INFO(DRV_NAME " is going down\n");
2065
2066 if (!exit_pending)
2067 set_bit(STATUS_EXIT_PENDING, &priv->status);
2068
2069 iwl_leds_unregister(priv);
2070
2071 iwl_clear_stations_table(priv);
2072
2073 /* Unblock any waiting calls */
2074 wake_up_interruptible_all(&priv->wait_command_queue);
2075
2076 /* Wipe out the EXIT_PENDING status bit if we are not actually
2077 * exiting the module */
2078 if (!exit_pending)
2079 clear_bit(STATUS_EXIT_PENDING, &priv->status);
2080
2081 /* stop and reset the on-board processor */
2082 iwl_write32(priv, CSR_RESET, CSR_RESET_REG_FLAG_NEVO_RESET);
2083
2084 /* tell the device to stop sending interrupts */
2085 spin_lock_irqsave(&priv->lock, flags);
2086 iwl4965_disable_interrupts(priv);
2087 spin_unlock_irqrestore(&priv->lock, flags);
2088 iwl_synchronize_irq(priv);
2089
2090 if (priv->mac80211_registered)
2091 ieee80211_stop_queues(priv->hw);
2092
2093 /* If we have not previously called iwl4965_init() then
2094 * clear all bits but the RF Kill and SUSPEND bits and return */
2095 if (!iwl_is_init(priv)) {
2096 priv->status = test_bit(STATUS_RF_KILL_HW, &priv->status) <<
2097 STATUS_RF_KILL_HW |
2098 test_bit(STATUS_RF_KILL_SW, &priv->status) <<
2099 STATUS_RF_KILL_SW |
2100 test_bit(STATUS_GEO_CONFIGURED, &priv->status) <<
2101 STATUS_GEO_CONFIGURED |
2102 test_bit(STATUS_IN_SUSPEND, &priv->status) <<
2103 STATUS_IN_SUSPEND;
2104 goto exit;
2105 }
2106
2107 /* ...otherwise clear out all the status bits but the RF Kill and
2108 * SUSPEND bits and continue taking the NIC down. */
2109 priv->status &= test_bit(STATUS_RF_KILL_HW, &priv->status) <<
2110 STATUS_RF_KILL_HW |
2111 test_bit(STATUS_RF_KILL_SW, &priv->status) <<
2112 STATUS_RF_KILL_SW |
2113 test_bit(STATUS_GEO_CONFIGURED, &priv->status) <<
2114 STATUS_GEO_CONFIGURED |
2115 test_bit(STATUS_IN_SUSPEND, &priv->status) <<
2116 STATUS_IN_SUSPEND |
2117 test_bit(STATUS_FW_ERROR, &priv->status) <<
2118 STATUS_FW_ERROR;
2119
2120 spin_lock_irqsave(&priv->lock, flags);
2121 iwl_clear_bit(priv, CSR_GP_CNTRL,
2122 CSR_GP_CNTRL_REG_FLAG_MAC_ACCESS_REQ);
2123 spin_unlock_irqrestore(&priv->lock, flags);
2124
2125 iwl_txq_ctx_stop(priv);
2126 iwl_rxq_stop(priv);
2127
2128 spin_lock_irqsave(&priv->lock, flags);
2129 if (!iwl_grab_nic_access(priv)) {
2130 iwl_write_prph(priv, APMG_CLK_DIS_REG,
2131 APMG_CLK_VAL_DMA_CLK_RQT);
2132 iwl_release_nic_access(priv);
2133 }
2134 spin_unlock_irqrestore(&priv->lock, flags);
2135
2136 udelay(5);
2137
2138 /* FIXME: apm_ops.suspend(priv) */
2139 priv->cfg->ops->lib->apm_ops.reset(priv);
2140 priv->cfg->ops->lib->free_shared_mem(priv);
2141
2142 exit:
2143 memset(&priv->card_alive, 0, sizeof(struct iwl_alive_resp));
2144
2145 if (priv->ibss_beacon)
2146 dev_kfree_skb(priv->ibss_beacon);
2147 priv->ibss_beacon = NULL;
2148
2149 /* clear out any free frames */
2150 iwl_clear_free_frames(priv);
2151 }
2152
2153 static void iwl4965_down(struct iwl_priv *priv)
2154 {
2155 mutex_lock(&priv->mutex);
2156 __iwl4965_down(priv);
2157 mutex_unlock(&priv->mutex);
2158
2159 iwl_cancel_deferred_work(priv);
2160 }
2161
2162 #define MAX_HW_RESTARTS 5
2163
2164 static int __iwl4965_up(struct iwl_priv *priv)
2165 {
2166 int i;
2167 int ret;
2168
2169 if (test_bit(STATUS_EXIT_PENDING, &priv->status)) {
2170 IWL_WARNING("Exit pending; will not bring the NIC up\n");
2171 return -EIO;
2172 }
2173
2174 if (!priv->ucode_data_backup.v_addr || !priv->ucode_data.v_addr) {
2175 IWL_ERROR("ucode not available for device bringup\n");
2176 return -EIO;
2177 }
2178
2179 /* If platform's RF_KILL switch is NOT set to KILL */
2180 if (iwl_read32(priv, CSR_GP_CNTRL) &
2181 CSR_GP_CNTRL_REG_FLAG_HW_RF_KILL_SW)
2182 clear_bit(STATUS_RF_KILL_HW, &priv->status);
2183 else {
2184 set_bit(STATUS_RF_KILL_HW, &priv->status);
2185 if (!test_bit(STATUS_IN_SUSPEND, &priv->status)) {
2186 iwl_rfkill_set_hw_state(priv);
2187 IWL_WARNING("Radio disabled by HW RF Kill switch\n");
2188 return -ENODEV;
2189 }
2190 }
2191
2192 iwl_rfkill_set_hw_state(priv);
2193 iwl_write32(priv, CSR_INT, 0xFFFFFFFF);
2194
2195 ret = priv->cfg->ops->lib->alloc_shared_mem(priv);
2196 if (ret) {
2197 IWL_ERROR("Unable to allocate shared memory\n");
2198 return ret;
2199 }
2200
2201 ret = iwl_hw_nic_init(priv);
2202 if (ret) {
2203 IWL_ERROR("Unable to init nic\n");
2204 return ret;
2205 }
2206
2207 /* make sure rfkill handshake bits are cleared */
2208 iwl_write32(priv, CSR_UCODE_DRV_GP1_CLR, CSR_UCODE_SW_BIT_RFKILL);
2209 iwl_write32(priv, CSR_UCODE_DRV_GP1_CLR,
2210 CSR_UCODE_DRV_GP1_BIT_CMD_BLOCKED);
2211
2212 /* clear (again), then enable host interrupts */
2213 iwl_write32(priv, CSR_INT, 0xFFFFFFFF);
2214 iwl4965_enable_interrupts(priv);
2215
2216 /* really make sure rfkill handshake bits are cleared */
2217 iwl_write32(priv, CSR_UCODE_DRV_GP1_CLR, CSR_UCODE_SW_BIT_RFKILL);
2218 iwl_write32(priv, CSR_UCODE_DRV_GP1_CLR, CSR_UCODE_SW_BIT_RFKILL);
2219
2220 /* Copy original ucode data image from disk into backup cache.
2221 * This will be used to initialize the on-board processor's
2222 * data SRAM for a clean start when the runtime program first loads. */
2223 memcpy(priv->ucode_data_backup.v_addr, priv->ucode_data.v_addr,
2224 priv->ucode_data.len);
2225
2226 /* We return success when we resume from suspend and rf_kill is on. */
2227 if (test_bit(STATUS_RF_KILL_HW, &priv->status) ||
2228 test_bit(STATUS_RF_KILL_SW, &priv->status))
2229 return 0;
2230
2231 for (i = 0; i < MAX_HW_RESTARTS; i++) {
2232
2233 iwl_clear_stations_table(priv);
2234
2235 /* load bootstrap state machine,
2236 * load bootstrap program into processor's memory,
2237 * prepare to load the "initialize" uCode */
2238 ret = priv->cfg->ops->lib->load_ucode(priv);
2239
2240 if (ret) {
2241 IWL_ERROR("Unable to set up bootstrap uCode: %d\n", ret);
2242 continue;
2243 }
2244
2245 /* Clear out the uCode error bit if it is set */
2246 clear_bit(STATUS_FW_ERROR, &priv->status);
2247
2248 /* start card; "initialize" will load runtime ucode */
2249 iwl4965_nic_start(priv);
2250
2251 IWL_DEBUG_INFO(DRV_NAME " is coming up\n");
2252
2253 return 0;
2254 }
2255
2256 set_bit(STATUS_EXIT_PENDING, &priv->status);
2257 __iwl4965_down(priv);
2258 clear_bit(STATUS_EXIT_PENDING, &priv->status);
2259
2260 /* tried to restart and config the device for as long as our
2261 * patience could withstand */
2262 IWL_ERROR("Unable to initialize device after %d attempts.\n", i);
2263 return -EIO;
2264 }
2265
2266
2267 /*****************************************************************************
2268 *
2269 * Workqueue callbacks
2270 *
2271 *****************************************************************************/
2272
2273 static void iwl_bg_init_alive_start(struct work_struct *data)
2274 {
2275 struct iwl_priv *priv =
2276 container_of(data, struct iwl_priv, init_alive_start.work);
2277
2278 if (test_bit(STATUS_EXIT_PENDING, &priv->status))
2279 return;
2280
2281 mutex_lock(&priv->mutex);
2282 priv->cfg->ops->lib->init_alive_start(priv);
2283 mutex_unlock(&priv->mutex);
2284 }
2285
2286 static void iwl_bg_alive_start(struct work_struct *data)
2287 {
2288 struct iwl_priv *priv =
2289 container_of(data, struct iwl_priv, alive_start.work);
2290
2291 if (test_bit(STATUS_EXIT_PENDING, &priv->status))
2292 return;
2293
2294 mutex_lock(&priv->mutex);
2295 iwl_alive_start(priv);
2296 mutex_unlock(&priv->mutex);
2297 }
2298
2299 static void iwl4965_bg_rf_kill(struct work_struct *work)
2300 {
2301 struct iwl_priv *priv = container_of(work, struct iwl_priv, rf_kill);
2302
2303 wake_up_interruptible(&priv->wait_command_queue);
2304
2305 if (test_bit(STATUS_EXIT_PENDING, &priv->status))
2306 return;
2307
2308 mutex_lock(&priv->mutex);
2309
2310 if (!iwl_is_rfkill(priv)) {
2311 IWL_DEBUG(IWL_DL_RF_KILL,
2312 "HW and/or SW RF Kill no longer active, restarting "
2313 "device\n");
2314 if (!test_bit(STATUS_EXIT_PENDING, &priv->status))
2315 queue_work(priv->workqueue, &priv->restart);
2316 } else {
2317 /* make sure mac80211 stop sending Tx frame */
2318 if (priv->mac80211_registered)
2319 ieee80211_stop_queues(priv->hw);
2320
2321 if (!test_bit(STATUS_RF_KILL_HW, &priv->status))
2322 IWL_DEBUG_RF_KILL("Can not turn radio back on - "
2323 "disabled by SW switch\n");
2324 else
2325 IWL_WARNING("Radio Frequency Kill Switch is On:\n"
2326 "Kill switch must be turned off for "
2327 "wireless networking to work.\n");
2328 }
2329 iwl_rfkill_set_hw_state(priv);
2330
2331 mutex_unlock(&priv->mutex);
2332 }
2333
2334 static void iwl4965_bg_set_monitor(struct work_struct *work)
2335 {
2336 struct iwl_priv *priv = container_of(work,
2337 struct iwl_priv, set_monitor);
2338 int ret;
2339
2340 IWL_DEBUG(IWL_DL_STATE, "setting monitor mode\n");
2341
2342 mutex_lock(&priv->mutex);
2343
2344 ret = iwl4965_set_mode(priv, IEEE80211_IF_TYPE_MNTR);
2345
2346 if (ret) {
2347 if (ret == -EAGAIN)
2348 IWL_DEBUG(IWL_DL_STATE, "leave - not ready\n");
2349 else
2350 IWL_ERROR("iwl4965_set_mode() failed ret = %d\n", ret);
2351 }
2352
2353 mutex_unlock(&priv->mutex);
2354 }
2355
2356 static void iwl_bg_run_time_calib_work(struct work_struct *work)
2357 {
2358 struct iwl_priv *priv = container_of(work, struct iwl_priv,
2359 run_time_calib_work);
2360
2361 mutex_lock(&priv->mutex);
2362
2363 if (test_bit(STATUS_EXIT_PENDING, &priv->status) ||
2364 test_bit(STATUS_SCANNING, &priv->status)) {
2365 mutex_unlock(&priv->mutex);
2366 return;
2367 }
2368
2369 if (priv->start_calib) {
2370 iwl_chain_noise_calibration(priv, &priv->statistics);
2371
2372 iwl_sensitivity_calibration(priv, &priv->statistics);
2373 }
2374
2375 mutex_unlock(&priv->mutex);
2376 return;
2377 }
2378
2379 static void iwl4965_bg_up(struct work_struct *data)
2380 {
2381 struct iwl_priv *priv = container_of(data, struct iwl_priv, up);
2382
2383 if (test_bit(STATUS_EXIT_PENDING, &priv->status))
2384 return;
2385
2386 mutex_lock(&priv->mutex);
2387 __iwl4965_up(priv);
2388 mutex_unlock(&priv->mutex);
2389 }
2390
2391 static void iwl4965_bg_restart(struct work_struct *data)
2392 {
2393 struct iwl_priv *priv = container_of(data, struct iwl_priv, restart);
2394
2395 if (test_bit(STATUS_EXIT_PENDING, &priv->status))
2396 return;
2397
2398 iwl4965_down(priv);
2399 queue_work(priv->workqueue, &priv->up);
2400 }
2401
2402 static void iwl4965_bg_rx_replenish(struct work_struct *data)
2403 {
2404 struct iwl_priv *priv =
2405 container_of(data, struct iwl_priv, rx_replenish);
2406
2407 if (test_bit(STATUS_EXIT_PENDING, &priv->status))
2408 return;
2409
2410 mutex_lock(&priv->mutex);
2411 iwl_rx_replenish(priv);
2412 mutex_unlock(&priv->mutex);
2413 }
2414
2415 #define IWL_DELAY_NEXT_SCAN (HZ*2)
2416
2417 static void iwl4965_post_associate(struct iwl_priv *priv)
2418 {
2419 struct ieee80211_conf *conf = NULL;
2420 int ret = 0;
2421 DECLARE_MAC_BUF(mac);
2422
2423 if (priv->iw_mode == IEEE80211_IF_TYPE_AP) {
2424 IWL_ERROR("%s Should not be called in AP mode\n", __FUNCTION__);
2425 return;
2426 }
2427
2428 IWL_DEBUG_ASSOC("Associated as %d to: %s\n",
2429 priv->assoc_id,
2430 print_mac(mac, priv->active_rxon.bssid_addr));
2431
2432
2433 if (test_bit(STATUS_EXIT_PENDING, &priv->status))
2434 return;
2435
2436
2437 if (!priv->vif || !priv->is_open)
2438 return;
2439
2440 iwl_scan_cancel_timeout(priv, 200);
2441
2442 conf = ieee80211_get_hw_conf(priv->hw);
2443
2444 priv->staging_rxon.filter_flags &= ~RXON_FILTER_ASSOC_MSK;
2445 iwl4965_commit_rxon(priv);
2446
2447 memset(&priv->rxon_timing, 0, sizeof(struct iwl4965_rxon_time_cmd));
2448 iwl4965_setup_rxon_timing(priv);
2449 ret = iwl_send_cmd_pdu(priv, REPLY_RXON_TIMING,
2450 sizeof(priv->rxon_timing), &priv->rxon_timing);
2451 if (ret)
2452 IWL_WARNING("REPLY_RXON_TIMING failed - "
2453 "Attempting to continue.\n");
2454
2455 priv->staging_rxon.filter_flags |= RXON_FILTER_ASSOC_MSK;
2456
2457 if (priv->current_ht_config.is_ht)
2458 iwl_set_rxon_ht(priv, &priv->current_ht_config);
2459
2460 iwl_set_rxon_chain(priv);
2461 priv->staging_rxon.assoc_id = cpu_to_le16(priv->assoc_id);
2462
2463 IWL_DEBUG_ASSOC("assoc id %d beacon interval %d\n",
2464 priv->assoc_id, priv->beacon_int);
2465
2466 if (priv->assoc_capability & WLAN_CAPABILITY_SHORT_PREAMBLE)
2467 priv->staging_rxon.flags |= RXON_FLG_SHORT_PREAMBLE_MSK;
2468 else
2469 priv->staging_rxon.flags &= ~RXON_FLG_SHORT_PREAMBLE_MSK;
2470
2471 if (priv->staging_rxon.flags & RXON_FLG_BAND_24G_MSK) {
2472 if (priv->assoc_capability & WLAN_CAPABILITY_SHORT_SLOT_TIME)
2473 priv->staging_rxon.flags |= RXON_FLG_SHORT_SLOT_MSK;
2474 else
2475 priv->staging_rxon.flags &= ~RXON_FLG_SHORT_SLOT_MSK;
2476
2477 if (priv->iw_mode == IEEE80211_IF_TYPE_IBSS)
2478 priv->staging_rxon.flags &= ~RXON_FLG_SHORT_SLOT_MSK;
2479
2480 }
2481
2482 iwl4965_commit_rxon(priv);
2483
2484 switch (priv->iw_mode) {
2485 case IEEE80211_IF_TYPE_STA:
2486 iwl4965_rate_scale_init(priv->hw, IWL_AP_ID);
2487 break;
2488
2489 case IEEE80211_IF_TYPE_IBSS:
2490
2491 /* assume default assoc id */
2492 priv->assoc_id = 1;
2493
2494 iwl_rxon_add_station(priv, priv->bssid, 0);
2495 iwl4965_rate_scale_init(priv->hw, IWL_STA_ID);
2496 iwl4965_send_beacon_cmd(priv);
2497
2498 break;
2499
2500 default:
2501 IWL_ERROR("%s Should not be called in %d mode\n",
2502 __FUNCTION__, priv->iw_mode);
2503 break;
2504 }
2505
2506 /* Enable Rx differential gain and sensitivity calibrations */
2507 iwl_chain_noise_reset(priv);
2508 priv->start_calib = 1;
2509
2510 if (priv->iw_mode == IEEE80211_IF_TYPE_IBSS)
2511 priv->assoc_station_added = 1;
2512
2513 iwl4965_activate_qos(priv, 0);
2514
2515 iwl_power_update_mode(priv, 0);
2516 /* we have just associated, don't start scan too early */
2517 priv->next_scan_jiffies = jiffies + IWL_DELAY_NEXT_SCAN;
2518 }
2519
2520
2521 static void iwl4965_bg_post_associate(struct work_struct *data)
2522 {
2523 struct iwl_priv *priv = container_of(data, struct iwl_priv,
2524 post_associate.work);
2525
2526 mutex_lock(&priv->mutex);
2527 iwl4965_post_associate(priv);
2528 mutex_unlock(&priv->mutex);
2529
2530 }
2531
2532 static int iwl4965_mac_config(struct ieee80211_hw *hw, struct ieee80211_conf *conf);
2533
2534 static void iwl_bg_scan_completed(struct work_struct *work)
2535 {
2536 struct iwl_priv *priv =
2537 container_of(work, struct iwl_priv, scan_completed);
2538
2539 IWL_DEBUG_SCAN("SCAN complete scan\n");
2540
2541 if (test_bit(STATUS_EXIT_PENDING, &priv->status))
2542 return;
2543
2544 if (test_bit(STATUS_CONF_PENDING, &priv->status))
2545 iwl4965_mac_config(priv->hw, ieee80211_get_hw_conf(priv->hw));
2546
2547 ieee80211_scan_completed(priv->hw);
2548
2549 /* Since setting the TXPOWER may have been deferred while
2550 * performing the scan, fire one off */
2551 mutex_lock(&priv->mutex);
2552 iwl_set_tx_power(priv, priv->tx_power_user_lmt, true);
2553 mutex_unlock(&priv->mutex);
2554 }
2555
2556 /*****************************************************************************
2557 *
2558 * mac80211 entry point functions
2559 *
2560 *****************************************************************************/
2561
2562 #define UCODE_READY_TIMEOUT (2 * HZ)
2563
2564 static int iwl4965_mac_start(struct ieee80211_hw *hw)
2565 {
2566 struct iwl_priv *priv = hw->priv;
2567 int ret;
2568
2569 IWL_DEBUG_MAC80211("enter\n");
2570
2571 if (pci_enable_device(priv->pci_dev)) {
2572 IWL_ERROR("Fail to pci_enable_device\n");
2573 return -ENODEV;
2574 }
2575 pci_restore_state(priv->pci_dev);
2576 pci_enable_msi(priv->pci_dev);
2577
2578 ret = request_irq(priv->pci_dev->irq, iwl4965_isr, IRQF_SHARED,
2579 DRV_NAME, priv);
2580 if (ret) {
2581 IWL_ERROR("Error allocating IRQ %d\n", priv->pci_dev->irq);
2582 goto out_disable_msi;
2583 }
2584
2585 /* we should be verifying the device is ready to be opened */
2586 mutex_lock(&priv->mutex);
2587
2588 memset(&priv->staging_rxon, 0, sizeof(struct iwl_rxon_cmd));
2589 /* fetch ucode file from disk, alloc and copy to bus-master buffers ...
2590 * ucode filename and max sizes are card-specific. */
2591
2592 if (!priv->ucode_code.len) {
2593 ret = iwl4965_read_ucode(priv);
2594 if (ret) {
2595 IWL_ERROR("Could not read microcode: %d\n", ret);
2596 mutex_unlock(&priv->mutex);
2597 goto out_release_irq;
2598 }
2599 }
2600
2601 ret = __iwl4965_up(priv);
2602
2603 mutex_unlock(&priv->mutex);
2604
2605 if (ret)
2606 goto out_release_irq;
2607
2608 IWL_DEBUG_INFO("Start UP work done.\n");
2609
2610 if (test_bit(STATUS_IN_SUSPEND, &priv->status))
2611 return 0;
2612
2613 /* Wait for START_ALIVE from Run Time ucode. Otherwise callbacks from
2614 * mac80211 will not be run successfully. */
2615 if (priv->ucode_type == UCODE_RT) {
2616 ret = wait_event_interruptible_timeout(priv->wait_command_queue,
2617 test_bit(STATUS_READY, &priv->status),
2618 UCODE_READY_TIMEOUT);
2619 if (!ret) {
2620 if (!test_bit(STATUS_READY, &priv->status)) {
2621 IWL_ERROR("START_ALIVE timeout after %dms.\n",
2622 jiffies_to_msecs(UCODE_READY_TIMEOUT));
2623 ret = -ETIMEDOUT;
2624 goto out_release_irq;
2625 }
2626 }
2627
2628 priv->is_open = 1;
2629 }
2630 IWL_DEBUG_MAC80211("leave\n");
2631 return 0;
2632
2633 out_release_irq:
2634 free_irq(priv->pci_dev->irq, priv);
2635 out_disable_msi:
2636 pci_disable_msi(priv->pci_dev);
2637 pci_disable_device(priv->pci_dev);
2638 priv->is_open = 0;
2639 IWL_DEBUG_MAC80211("leave - failed\n");
2640 return ret;
2641 }
2642
2643 static void iwl4965_mac_stop(struct ieee80211_hw *hw)
2644 {
2645 struct iwl_priv *priv = hw->priv;
2646
2647 IWL_DEBUG_MAC80211("enter\n");
2648
2649 if (!priv->is_open) {
2650 IWL_DEBUG_MAC80211("leave - skip\n");
2651 return;
2652 }
2653
2654 priv->is_open = 0;
2655
2656 if (iwl_is_ready_rf(priv)) {
2657 /* stop mac, cancel any scan request and clear
2658 * RXON_FILTER_ASSOC_MSK BIT
2659 */
2660 mutex_lock(&priv->mutex);
2661 iwl_scan_cancel_timeout(priv, 100);
2662 cancel_delayed_work(&priv->post_associate);
2663 mutex_unlock(&priv->mutex);
2664 }
2665
2666 iwl4965_down(priv);
2667
2668 flush_workqueue(priv->workqueue);
2669 free_irq(priv->pci_dev->irq, priv);
2670 pci_disable_msi(priv->pci_dev);
2671 pci_save_state(priv->pci_dev);
2672 pci_disable_device(priv->pci_dev);
2673
2674 IWL_DEBUG_MAC80211("leave\n");
2675 }
2676
2677 static int iwl4965_mac_tx(struct ieee80211_hw *hw, struct sk_buff *skb)
2678 {
2679 struct iwl_priv *priv = hw->priv;
2680
2681 IWL_DEBUG_MAC80211("enter\n");
2682
2683 if (priv->iw_mode == IEEE80211_IF_TYPE_MNTR) {
2684 IWL_DEBUG_MAC80211("leave - monitor\n");
2685 return -1;
2686 }
2687
2688 IWL_DEBUG_TX("dev->xmit(%d bytes) at rate 0x%02x\n", skb->len,
2689 ieee80211_get_tx_rate(hw, IEEE80211_SKB_CB(skb))->bitrate);
2690
2691 if (iwl_tx_skb(priv, skb))
2692 dev_kfree_skb_any(skb);
2693
2694 IWL_DEBUG_MAC80211("leave\n");
2695 return 0;
2696 }
2697
2698 static int iwl4965_mac_add_interface(struct ieee80211_hw *hw,
2699 struct ieee80211_if_init_conf *conf)
2700 {
2701 struct iwl_priv *priv = hw->priv;
2702 unsigned long flags;
2703 DECLARE_MAC_BUF(mac);
2704
2705 IWL_DEBUG_MAC80211("enter: type %d\n", conf->type);
2706
2707 if (priv->vif) {
2708 IWL_DEBUG_MAC80211("leave - vif != NULL\n");
2709 return -EOPNOTSUPP;
2710 }
2711
2712 spin_lock_irqsave(&priv->lock, flags);
2713 priv->vif = conf->vif;
2714
2715 spin_unlock_irqrestore(&priv->lock, flags);
2716
2717 mutex_lock(&priv->mutex);
2718
2719 if (conf->mac_addr) {
2720 IWL_DEBUG_MAC80211("Set %s\n", print_mac(mac, conf->mac_addr));
2721 memcpy(priv->mac_addr, conf->mac_addr, ETH_ALEN);
2722 }
2723
2724 if (iwl4965_set_mode(priv, conf->type) == -EAGAIN)
2725 /* we are not ready, will run again when ready */
2726 set_bit(STATUS_MODE_PENDING, &priv->status);
2727
2728 mutex_unlock(&priv->mutex);
2729
2730 IWL_DEBUG_MAC80211("leave\n");
2731 return 0;
2732 }
2733
2734 /**
2735 * iwl4965_mac_config - mac80211 config callback
2736 *
2737 * We ignore conf->flags & IEEE80211_CONF_SHORT_SLOT_TIME since it seems to
2738 * be set inappropriately and the driver currently sets the hardware up to
2739 * use it whenever needed.
2740 */
2741 static int iwl4965_mac_config(struct ieee80211_hw *hw, struct ieee80211_conf *conf)
2742 {
2743 struct iwl_priv *priv = hw->priv;
2744 const struct iwl_channel_info *ch_info;
2745 unsigned long flags;
2746 int ret = 0;
2747 u16 channel;
2748
2749 mutex_lock(&priv->mutex);
2750 IWL_DEBUG_MAC80211("enter to channel %d\n", conf->channel->hw_value);
2751
2752 priv->add_radiotap = !!(conf->flags & IEEE80211_CONF_RADIOTAP);
2753
2754 if (conf->radio_enabled && iwl_radio_kill_sw_enable_radio(priv)) {
2755 IWL_DEBUG_MAC80211("leave - RF-KILL - waiting for uCode\n");
2756 goto out;
2757 }
2758
2759 if (!conf->radio_enabled)
2760 iwl_radio_kill_sw_disable_radio(priv);
2761
2762 if (!iwl_is_ready(priv)) {
2763 IWL_DEBUG_MAC80211("leave - not ready\n");
2764 ret = -EIO;
2765 goto out;
2766 }
2767
2768 if (unlikely(!priv->cfg->mod_params->disable_hw_scan &&
2769 test_bit(STATUS_SCANNING, &priv->status))) {
2770 IWL_DEBUG_MAC80211("leave - scanning\n");
2771 set_bit(STATUS_CONF_PENDING, &priv->status);
2772 mutex_unlock(&priv->mutex);
2773 return 0;
2774 }
2775
2776 channel = ieee80211_frequency_to_channel(conf->channel->center_freq);
2777 ch_info = iwl_get_channel_info(priv, conf->channel->band, channel);
2778 if (!is_channel_valid(ch_info)) {
2779 IWL_DEBUG_MAC80211("leave - invalid channel\n");
2780 ret = -EINVAL;
2781 goto out;
2782 }
2783
2784 if (priv->iw_mode == IEEE80211_IF_TYPE_IBSS &&
2785 !is_channel_ibss(ch_info)) {
2786 IWL_ERROR("channel %d in band %d not IBSS channel\n",
2787 conf->channel->hw_value, conf->channel->band);
2788 ret = -EINVAL;
2789 goto out;
2790 }
2791
2792 spin_lock_irqsave(&priv->lock, flags);
2793
2794 /* if we are switching from ht to 2.4 clear flags
2795 * from any ht related info since 2.4 does not
2796 * support ht */
2797 if ((le16_to_cpu(priv->staging_rxon.channel) != channel)
2798 #ifdef IEEE80211_CONF_CHANNEL_SWITCH
2799 && !(conf->flags & IEEE80211_CONF_CHANNEL_SWITCH)
2800 #endif
2801 )
2802 priv->staging_rxon.flags = 0;
2803
2804 iwl_set_rxon_channel(priv, conf->channel->band, channel);
2805
2806 iwl_set_flags_for_band(priv, conf->channel->band);
2807
2808 /* The list of supported rates and rate mask can be different
2809 * for each band; since the band may have changed, reset
2810 * the rate mask to what mac80211 lists */
2811 iwl4965_set_rate(priv);
2812
2813 spin_unlock_irqrestore(&priv->lock, flags);
2814
2815 #ifdef IEEE80211_CONF_CHANNEL_SWITCH
2816 if (conf->flags & IEEE80211_CONF_CHANNEL_SWITCH) {
2817 iwl4965_hw_channel_switch(priv, conf->channel);
2818 goto out;
2819 }
2820 #endif
2821
2822 if (!conf->radio_enabled) {
2823 IWL_DEBUG_MAC80211("leave - radio disabled\n");
2824 goto out;
2825 }
2826
2827 if (iwl_is_rfkill(priv)) {
2828 IWL_DEBUG_MAC80211("leave - RF kill\n");
2829 ret = -EIO;
2830 goto out;
2831 }
2832
2833 IWL_DEBUG_MAC80211("TX Power old=%d new=%d\n",
2834 priv->tx_power_user_lmt, conf->power_level);
2835
2836 iwl_set_tx_power(priv, conf->power_level, false);
2837
2838 iwl4965_set_rate(priv);
2839
2840 if (memcmp(&priv->active_rxon,
2841 &priv->staging_rxon, sizeof(priv->staging_rxon)))
2842 iwl4965_commit_rxon(priv);
2843 else
2844 IWL_DEBUG_INFO("No re-sending same RXON configuration.\n");
2845
2846 IWL_DEBUG_MAC80211("leave\n");
2847
2848 out:
2849 clear_bit(STATUS_CONF_PENDING, &priv->status);
2850 mutex_unlock(&priv->mutex);
2851 return ret;
2852 }
2853
2854 static void iwl4965_config_ap(struct iwl_priv *priv)
2855 {
2856 int ret = 0;
2857
2858 if (test_bit(STATUS_EXIT_PENDING, &priv->status))
2859 return;
2860
2861 /* The following should be done only at AP bring up */
2862 if (!(iwl_is_associated(priv))) {
2863
2864 /* RXON - unassoc (to set timing command) */
2865 priv->staging_rxon.filter_flags &= ~RXON_FILTER_ASSOC_MSK;
2866 iwl4965_commit_rxon(priv);
2867
2868 /* RXON Timing */
2869 memset(&priv->rxon_timing, 0, sizeof(struct iwl4965_rxon_time_cmd));
2870 iwl4965_setup_rxon_timing(priv);
2871 ret = iwl_send_cmd_pdu(priv, REPLY_RXON_TIMING,
2872 sizeof(priv->rxon_timing), &priv->rxon_timing);
2873 if (ret)
2874 IWL_WARNING("REPLY_RXON_TIMING failed - "
2875 "Attempting to continue.\n");
2876
2877 iwl_set_rxon_chain(priv);
2878
2879 /* FIXME: what should be the assoc_id for AP? */
2880 priv->staging_rxon.assoc_id = cpu_to_le16(priv->assoc_id);
2881 if (priv->assoc_capability & WLAN_CAPABILITY_SHORT_PREAMBLE)
2882 priv->staging_rxon.flags |=
2883 RXON_FLG_SHORT_PREAMBLE_MSK;
2884 else
2885 priv->staging_rxon.flags &=
2886 ~RXON_FLG_SHORT_PREAMBLE_MSK;
2887
2888 if (priv->staging_rxon.flags & RXON_FLG_BAND_24G_MSK) {
2889 if (priv->assoc_capability &
2890 WLAN_CAPABILITY_SHORT_SLOT_TIME)
2891 priv->staging_rxon.flags |=
2892 RXON_FLG_SHORT_SLOT_MSK;
2893 else
2894 priv->staging_rxon.flags &=
2895 ~RXON_FLG_SHORT_SLOT_MSK;
2896
2897 if (priv->iw_mode == IEEE80211_IF_TYPE_IBSS)
2898 priv->staging_rxon.flags &=
2899 ~RXON_FLG_SHORT_SLOT_MSK;
2900 }
2901 /* restore RXON assoc */
2902 priv->staging_rxon.filter_flags |= RXON_FILTER_ASSOC_MSK;
2903 iwl4965_commit_rxon(priv);
2904 iwl4965_activate_qos(priv, 1);
2905 iwl_rxon_add_station(priv, iwl_bcast_addr, 0);
2906 }
2907 iwl4965_send_beacon_cmd(priv);
2908
2909 /* FIXME - we need to add code here to detect a totally new
2910 * configuration, reset the AP, unassoc, rxon timing, assoc,
2911 * clear sta table, add BCAST sta... */
2912 }
2913
2914 static int iwl4965_mac_config_interface(struct ieee80211_hw *hw,
2915 struct ieee80211_vif *vif,
2916 struct ieee80211_if_conf *conf)
2917 {
2918 struct iwl_priv *priv = hw->priv;
2919 DECLARE_MAC_BUF(mac);
2920 unsigned long flags;
2921 int rc;
2922
2923 if (conf == NULL)
2924 return -EIO;
2925
2926 if (priv->vif != vif) {
2927 IWL_DEBUG_MAC80211("leave - priv->vif != vif\n");
2928 return 0;
2929 }
2930
2931 if ((priv->iw_mode == IEEE80211_IF_TYPE_AP) &&
2932 (!conf->beacon || !conf->ssid_len)) {
2933 IWL_DEBUG_MAC80211
2934 ("Leaving in AP mode because HostAPD is not ready.\n");
2935 return 0;
2936 }
2937
2938 if (!iwl_is_alive(priv))
2939 return -EAGAIN;
2940
2941 mutex_lock(&priv->mutex);
2942
2943 if (conf->bssid)
2944 IWL_DEBUG_MAC80211("bssid: %s\n",
2945 print_mac(mac, conf->bssid));
2946
2947 /*
2948 * very dubious code was here; the probe filtering flag is never set:
2949 *
2950 if (unlikely(test_bit(STATUS_SCANNING, &priv->status)) &&
2951 !(priv->hw->flags & IEEE80211_HW_NO_PROBE_FILTERING)) {
2952 */
2953
2954 if (priv->iw_mode == IEEE80211_IF_TYPE_AP) {
2955 if (!conf->bssid) {
2956 conf->bssid = priv->mac_addr;
2957 memcpy(priv->bssid, priv->mac_addr, ETH_ALEN);
2958 IWL_DEBUG_MAC80211("bssid was set to: %s\n",
2959 print_mac(mac, conf->bssid));
2960 }
2961 if (priv->ibss_beacon)
2962 dev_kfree_skb(priv->ibss_beacon);
2963
2964 priv->ibss_beacon = conf->beacon;
2965 }
2966
2967 if (iwl_is_rfkill(priv))
2968 goto done;
2969
2970 if (conf->bssid && !is_zero_ether_addr(conf->bssid) &&
2971 !is_multicast_ether_addr(conf->bssid)) {
2972 /* If there is currently a HW scan going on in the background
2973 * then we need to cancel it else the RXON below will fail. */
2974 if (iwl_scan_cancel_timeout(priv, 100)) {
2975 IWL_WARNING("Aborted scan still in progress "
2976 "after 100ms\n");
2977 IWL_DEBUG_MAC80211("leaving - scan abort failed.\n");
2978 mutex_unlock(&priv->mutex);
2979 return -EAGAIN;
2980 }
2981 memcpy(priv->staging_rxon.bssid_addr, conf->bssid, ETH_ALEN);
2982
2983 /* TODO: Audit driver for usage of these members and see
2984 * if mac80211 deprecates them (priv->bssid looks like it
2985 * shouldn't be there, but I haven't scanned the IBSS code
2986 * to verify) - jpk */
2987 memcpy(priv->bssid, conf->bssid, ETH_ALEN);
2988
2989 if (priv->iw_mode == IEEE80211_IF_TYPE_AP)
2990 iwl4965_config_ap(priv);
2991 else {
2992 rc = iwl4965_commit_rxon(priv);
2993 if ((priv->iw_mode == IEEE80211_IF_TYPE_STA) && rc)
2994 iwl_rxon_add_station(
2995 priv, priv->active_rxon.bssid_addr, 1);
2996 }
2997
2998 } else {
2999 iwl_scan_cancel_timeout(priv, 100);
3000 priv->staging_rxon.filter_flags &= ~RXON_FILTER_ASSOC_MSK;
3001 iwl4965_commit_rxon(priv);
3002 }
3003
3004 done:
3005 spin_lock_irqsave(&priv->lock, flags);
3006 if (!conf->ssid_len)
3007 memset(priv->essid, 0, IW_ESSID_MAX_SIZE);
3008 else
3009 memcpy(priv->essid, conf->ssid, conf->ssid_len);
3010
3011 priv->essid_len = conf->ssid_len;
3012 spin_unlock_irqrestore(&priv->lock, flags);
3013
3014 IWL_DEBUG_MAC80211("leave\n");
3015 mutex_unlock(&priv->mutex);
3016
3017 return 0;
3018 }
3019
3020 static void iwl4965_configure_filter(struct ieee80211_hw *hw,
3021 unsigned int changed_flags,
3022 unsigned int *total_flags,
3023 int mc_count, struct dev_addr_list *mc_list)
3024 {
3025 /*
3026 * XXX: dummy
3027 * see also iwl4965_connection_init_rx_config
3028 */
3029 struct iwl_priv *priv = hw->priv;
3030 int new_flags = 0;
3031 if (changed_flags & (FIF_PROMISC_IN_BSS | FIF_OTHER_BSS)) {
3032 if (*total_flags & (FIF_PROMISC_IN_BSS | FIF_OTHER_BSS)) {
3033 IWL_DEBUG_MAC80211("Enter: type %d (0x%x, 0x%x)\n",
3034 IEEE80211_IF_TYPE_MNTR,
3035 changed_flags, *total_flags);
3036 /* queue work 'cuz mac80211 is holding a lock which
3037 * prevents us from issuing (synchronous) f/w cmds */
3038 queue_work(priv->workqueue, &priv->set_monitor);
3039 new_flags &= FIF_PROMISC_IN_BSS |
3040 FIF_OTHER_BSS |
3041 FIF_ALLMULTI;
3042 }
3043 }
3044 *total_flags = new_flags;
3045 }
3046
3047 static void iwl4965_mac_remove_interface(struct ieee80211_hw *hw,
3048 struct ieee80211_if_init_conf *conf)
3049 {
3050 struct iwl_priv *priv = hw->priv;
3051
3052 IWL_DEBUG_MAC80211("enter\n");
3053
3054 mutex_lock(&priv->mutex);
3055
3056 if (iwl_is_ready_rf(priv)) {
3057 iwl_scan_cancel_timeout(priv, 100);
3058 cancel_delayed_work(&priv->post_associate);
3059 priv->staging_rxon.filter_flags &= ~RXON_FILTER_ASSOC_MSK;
3060 iwl4965_commit_rxon(priv);
3061 }
3062 if (priv->vif == conf->vif) {
3063 priv->vif = NULL;
3064 memset(priv->bssid, 0, ETH_ALEN);
3065 memset(priv->essid, 0, IW_ESSID_MAX_SIZE);
3066 priv->essid_len = 0;
3067 }
3068 mutex_unlock(&priv->mutex);
3069
3070 IWL_DEBUG_MAC80211("leave\n");
3071
3072 }
3073
3074 #define IWL_DELAY_NEXT_SCAN_AFTER_ASSOC (HZ*6)
3075 static void iwl4965_bss_info_changed(struct ieee80211_hw *hw,
3076 struct ieee80211_vif *vif,
3077 struct ieee80211_bss_conf *bss_conf,
3078 u32 changes)
3079 {
3080 struct iwl_priv *priv = hw->priv;
3081
3082 IWL_DEBUG_MAC80211("changes = 0x%X\n", changes);
3083
3084 if (changes & BSS_CHANGED_ERP_PREAMBLE) {
3085 IWL_DEBUG_MAC80211("ERP_PREAMBLE %d\n",
3086 bss_conf->use_short_preamble);
3087 if (bss_conf->use_short_preamble)
3088 priv->staging_rxon.flags |= RXON_FLG_SHORT_PREAMBLE_MSK;
3089 else
3090 priv->staging_rxon.flags &= ~RXON_FLG_SHORT_PREAMBLE_MSK;
3091 }
3092
3093 if (changes & BSS_CHANGED_ERP_CTS_PROT) {
3094 IWL_DEBUG_MAC80211("ERP_CTS %d\n", bss_conf->use_cts_prot);
3095 if (bss_conf->use_cts_prot && (priv->band != IEEE80211_BAND_5GHZ))
3096 priv->staging_rxon.flags |= RXON_FLG_TGG_PROTECT_MSK;
3097 else
3098 priv->staging_rxon.flags &= ~RXON_FLG_TGG_PROTECT_MSK;
3099 }
3100
3101 if (changes & BSS_CHANGED_HT) {
3102 IWL_DEBUG_MAC80211("HT %d\n", bss_conf->assoc_ht);
3103 iwl4965_ht_conf(priv, bss_conf);
3104 iwl_set_rxon_chain(priv);
3105 }
3106
3107 if (changes & BSS_CHANGED_ASSOC) {
3108 IWL_DEBUG_MAC80211("ASSOC %d\n", bss_conf->assoc);
3109 /* This should never happen as this function should
3110 * never be called from interrupt context. */
3111 if (WARN_ON_ONCE(in_interrupt()))
3112 return;
3113 if (bss_conf->assoc) {
3114 priv->assoc_id = bss_conf->aid;
3115 priv->beacon_int = bss_conf->beacon_int;
3116 priv->timestamp = bss_conf->timestamp;
3117 priv->assoc_capability = bss_conf->assoc_capability;
3118 priv->next_scan_jiffies = jiffies +
3119 IWL_DELAY_NEXT_SCAN_AFTER_ASSOC;
3120 mutex_lock(&priv->mutex);
3121 iwl4965_post_associate(priv);
3122 mutex_unlock(&priv->mutex);
3123 } else {
3124 priv->assoc_id = 0;
3125 IWL_DEBUG_MAC80211("DISASSOC %d\n", bss_conf->assoc);
3126 }
3127 } else if (changes && iwl_is_associated(priv) && priv->assoc_id) {
3128 IWL_DEBUG_MAC80211("Associated Changes %d\n", changes);
3129 iwl_send_rxon_assoc(priv);
3130 }
3131
3132 }
3133
3134 static int iwl4965_mac_hw_scan(struct ieee80211_hw *hw, u8 *ssid, size_t len)
3135 {
3136 int rc = 0;
3137 unsigned long flags;
3138 struct iwl_priv *priv = hw->priv;
3139
3140 IWL_DEBUG_MAC80211("enter\n");
3141
3142 mutex_lock(&priv->mutex);
3143 spin_lock_irqsave(&priv->lock, flags);
3144
3145 if (!iwl_is_ready_rf(priv)) {
3146 rc = -EIO;
3147 IWL_DEBUG_MAC80211("leave - not ready or exit pending\n");
3148 goto out_unlock;
3149 }
3150
3151 if (priv->iw_mode == IEEE80211_IF_TYPE_AP) { /* APs don't scan */
3152 rc = -EIO;
3153 IWL_ERROR("ERROR: APs don't scan\n");
3154 goto out_unlock;
3155 }
3156
3157 /* we don't schedule scan within next_scan_jiffies period */
3158 if (priv->next_scan_jiffies &&
3159 time_after(priv->next_scan_jiffies, jiffies)) {
3160 rc = -EAGAIN;
3161 goto out_unlock;
3162 }
3163 /* if we just finished scan ask for delay */
3164 if (priv->last_scan_jiffies && time_after(priv->last_scan_jiffies +
3165 IWL_DELAY_NEXT_SCAN, jiffies)) {
3166 rc = -EAGAIN;
3167 goto out_unlock;
3168 }
3169 if (len) {
3170 IWL_DEBUG_SCAN("direct scan for %s [%d]\n ",
3171 iwl_escape_essid(ssid, len), (int)len);
3172
3173 priv->one_direct_scan = 1;
3174 priv->direct_ssid_len = (u8)
3175 min((u8) len, (u8) IW_ESSID_MAX_SIZE);
3176 memcpy(priv->direct_ssid, ssid, priv->direct_ssid_len);
3177 } else
3178 priv->one_direct_scan = 0;
3179
3180 rc = iwl_scan_initiate(priv);
3181
3182 IWL_DEBUG_MAC80211("leave\n");
3183
3184 out_unlock:
3185 spin_unlock_irqrestore(&priv->lock, flags);
3186 mutex_unlock(&priv->mutex);
3187
3188 return rc;
3189 }
3190
3191 static void iwl4965_mac_update_tkip_key(struct ieee80211_hw *hw,
3192 struct ieee80211_key_conf *keyconf, const u8 *addr,
3193 u32 iv32, u16 *phase1key)
3194 {
3195 struct iwl_priv *priv = hw->priv;
3196 u8 sta_id = IWL_INVALID_STATION;
3197 unsigned long flags;
3198 __le16 key_flags = 0;
3199 int i;
3200 DECLARE_MAC_BUF(mac);
3201
3202 IWL_DEBUG_MAC80211("enter\n");
3203
3204 sta_id = iwl_find_station(priv, addr);
3205 if (sta_id == IWL_INVALID_STATION) {
3206 IWL_DEBUG_MAC80211("leave - %s not in station map.\n",
3207 print_mac(mac, addr));
3208 return;
3209 }
3210
3211 iwl_scan_cancel_timeout(priv, 100);
3212
3213 key_flags |= (STA_KEY_FLG_TKIP | STA_KEY_FLG_MAP_KEY_MSK);
3214 key_flags |= cpu_to_le16(keyconf->keyidx << STA_KEY_FLG_KEYID_POS);
3215 key_flags &= ~STA_KEY_FLG_INVALID;
3216
3217 if (sta_id == priv->hw_params.bcast_sta_id)
3218 key_flags |= STA_KEY_MULTICAST_MSK;
3219
3220 spin_lock_irqsave(&priv->sta_lock, flags);
3221
3222 priv->stations[sta_id].sta.key.key_flags = key_flags;
3223 priv->stations[sta_id].sta.key.tkip_rx_tsc_byte2 = (u8) iv32;
3224
3225 for (i = 0; i < 5; i++)
3226 priv->stations[sta_id].sta.key.tkip_rx_ttak[i] =
3227 cpu_to_le16(phase1key[i]);
3228
3229 priv->stations[sta_id].sta.sta.modify_mask = STA_MODIFY_KEY_MASK;
3230 priv->stations[sta_id].sta.mode = STA_CONTROL_MODIFY_MSK;
3231
3232 iwl_send_add_sta(priv, &priv->stations[sta_id].sta, CMD_ASYNC);
3233
3234 spin_unlock_irqrestore(&priv->sta_lock, flags);
3235
3236 IWL_DEBUG_MAC80211("leave\n");
3237 }
3238
3239 static int iwl4965_mac_set_key(struct ieee80211_hw *hw, enum set_key_cmd cmd,
3240 const u8 *local_addr, const u8 *addr,
3241 struct ieee80211_key_conf *key)
3242 {
3243 struct iwl_priv *priv = hw->priv;
3244 DECLARE_MAC_BUF(mac);
3245 int ret = 0;
3246 u8 sta_id = IWL_INVALID_STATION;
3247 u8 is_default_wep_key = 0;
3248
3249 IWL_DEBUG_MAC80211("enter\n");
3250
3251 if (priv->hw_params.sw_crypto) {
3252 IWL_DEBUG_MAC80211("leave - hwcrypto disabled\n");
3253 return -EOPNOTSUPP;
3254 }
3255
3256 if (is_zero_ether_addr(addr))
3257 /* only support pairwise keys */
3258 return -EOPNOTSUPP;
3259
3260 sta_id = iwl_find_station(priv, addr);
3261 if (sta_id == IWL_INVALID_STATION) {
3262 IWL_DEBUG_MAC80211("leave - %s not in station map.\n",
3263 print_mac(mac, addr));
3264 return -EINVAL;
3265
3266 }
3267
3268 mutex_lock(&priv->mutex);
3269 iwl_scan_cancel_timeout(priv, 100);
3270 mutex_unlock(&priv->mutex);
3271
3272 /* If we are getting WEP group key and we didn't receive any key mapping
3273 * so far, we are in legacy wep mode (group key only), otherwise we are
3274 * in 1X mode.
3275 * In legacy wep mode, we use another host command to the uCode */
3276 if (key->alg == ALG_WEP && sta_id == priv->hw_params.bcast_sta_id &&
3277 priv->iw_mode != IEEE80211_IF_TYPE_AP) {
3278 if (cmd == SET_KEY)
3279 is_default_wep_key = !priv->key_mapping_key;
3280 else
3281 is_default_wep_key =
3282 (key->hw_key_idx == HW_KEY_DEFAULT);
3283 }
3284
3285 switch (cmd) {
3286 case SET_KEY:
3287 if (is_default_wep_key)
3288 ret = iwl_set_default_wep_key(priv, key);
3289 else
3290 ret = iwl_set_dynamic_key(priv, key, sta_id);
3291
3292 IWL_DEBUG_MAC80211("enable hwcrypto key\n");
3293 break;
3294 case DISABLE_KEY:
3295 if (is_default_wep_key)
3296 ret = iwl_remove_default_wep_key(priv, key);
3297 else
3298 ret = iwl_remove_dynamic_key(priv, key, sta_id);
3299
3300 IWL_DEBUG_MAC80211("disable hwcrypto key\n");
3301 break;
3302 default:
3303 ret = -EINVAL;
3304 }
3305
3306 IWL_DEBUG_MAC80211("leave\n");
3307
3308 return ret;
3309 }
3310
3311 static int iwl4965_mac_conf_tx(struct ieee80211_hw *hw, u16 queue,
3312 const struct ieee80211_tx_queue_params *params)
3313 {
3314 struct iwl_priv *priv = hw->priv;
3315 unsigned long flags;
3316 int q;
3317
3318 IWL_DEBUG_MAC80211("enter\n");
3319
3320 if (!iwl_is_ready_rf(priv)) {
3321 IWL_DEBUG_MAC80211("leave - RF not ready\n");
3322 return -EIO;
3323 }
3324
3325 if (queue >= AC_NUM) {
3326 IWL_DEBUG_MAC80211("leave - queue >= AC_NUM %d\n", queue);
3327 return 0;
3328 }
3329
3330 if (!priv->qos_data.qos_enable) {
3331 priv->qos_data.qos_active = 0;
3332 IWL_DEBUG_MAC80211("leave - qos not enabled\n");
3333 return 0;
3334 }
3335 q = AC_NUM - 1 - queue;
3336
3337 spin_lock_irqsave(&priv->lock, flags);
3338
3339 priv->qos_data.def_qos_parm.ac[q].cw_min = cpu_to_le16(params->cw_min);
3340 priv->qos_data.def_qos_parm.ac[q].cw_max = cpu_to_le16(params->cw_max);
3341 priv->qos_data.def_qos_parm.ac[q].aifsn = params->aifs;
3342 priv->qos_data.def_qos_parm.ac[q].edca_txop =
3343 cpu_to_le16((params->txop * 32));
3344
3345 priv->qos_data.def_qos_parm.ac[q].reserved1 = 0;
3346 priv->qos_data.qos_active = 1;
3347
3348 spin_unlock_irqrestore(&priv->lock, flags);
3349
3350 mutex_lock(&priv->mutex);
3351 if (priv->iw_mode == IEEE80211_IF_TYPE_AP)
3352 iwl4965_activate_qos(priv, 1);
3353 else if (priv->assoc_id && iwl_is_associated(priv))
3354 iwl4965_activate_qos(priv, 0);
3355
3356 mutex_unlock(&priv->mutex);
3357
3358 IWL_DEBUG_MAC80211("leave\n");
3359 return 0;
3360 }
3361
3362 static int iwl4965_mac_get_tx_stats(struct ieee80211_hw *hw,
3363 struct ieee80211_tx_queue_stats *stats)
3364 {
3365 struct iwl_priv *priv = hw->priv;
3366 int i, avail;
3367 struct iwl_tx_queue *txq;
3368 struct iwl_queue *q;
3369 unsigned long flags;
3370
3371 IWL_DEBUG_MAC80211("enter\n");
3372
3373 if (!iwl_is_ready_rf(priv)) {
3374 IWL_DEBUG_MAC80211("leave - RF not ready\n");
3375 return -EIO;
3376 }
3377
3378 spin_lock_irqsave(&priv->lock, flags);
3379
3380 for (i = 0; i < AC_NUM; i++) {
3381 txq = &priv->txq[i];
3382 q = &txq->q;
3383 avail = iwl_queue_space(q);
3384
3385 stats[i].len = q->n_window - avail;
3386 stats[i].limit = q->n_window - q->high_mark;
3387 stats[i].count = q->n_window;
3388
3389 }
3390 spin_unlock_irqrestore(&priv->lock, flags);
3391
3392 IWL_DEBUG_MAC80211("leave\n");
3393
3394 return 0;
3395 }
3396
3397 static int iwl4965_mac_get_stats(struct ieee80211_hw *hw,
3398 struct ieee80211_low_level_stats *stats)
3399 {
3400 struct iwl_priv *priv = hw->priv;
3401
3402 priv = hw->priv;
3403 IWL_DEBUG_MAC80211("enter\n");
3404 IWL_DEBUG_MAC80211("leave\n");
3405
3406 return 0;
3407 }
3408
3409 static u64 iwl4965_mac_get_tsf(struct ieee80211_hw *hw)
3410 {
3411 struct iwl_priv *priv;
3412
3413 priv = hw->priv;
3414 IWL_DEBUG_MAC80211("enter\n");
3415 IWL_DEBUG_MAC80211("leave\n");
3416
3417 return 0;
3418 }
3419
3420 static void iwl4965_mac_reset_tsf(struct ieee80211_hw *hw)
3421 {
3422 struct iwl_priv *priv = hw->priv;
3423 unsigned long flags;
3424
3425 mutex_lock(&priv->mutex);
3426 IWL_DEBUG_MAC80211("enter\n");
3427
3428 priv->lq_mngr.lq_ready = 0;
3429 spin_lock_irqsave(&priv->lock, flags);
3430 memset(&priv->current_ht_config, 0, sizeof(struct iwl_ht_info));
3431 spin_unlock_irqrestore(&priv->lock, flags);
3432
3433 iwl_reset_qos(priv);
3434
3435 cancel_delayed_work(&priv->post_associate);
3436
3437 spin_lock_irqsave(&priv->lock, flags);
3438 priv->assoc_id = 0;
3439 priv->assoc_capability = 0;
3440 priv->assoc_station_added = 0;
3441
3442 /* new association get rid of ibss beacon skb */
3443 if (priv->ibss_beacon)
3444 dev_kfree_skb(priv->ibss_beacon);
3445
3446 priv->ibss_beacon = NULL;
3447
3448 priv->beacon_int = priv->hw->conf.beacon_int;
3449 priv->timestamp = 0;
3450 if ((priv->iw_mode == IEEE80211_IF_TYPE_STA))
3451 priv->beacon_int = 0;
3452
3453 spin_unlock_irqrestore(&priv->lock, flags);
3454
3455 if (!iwl_is_ready_rf(priv)) {
3456 IWL_DEBUG_MAC80211("leave - not ready\n");
3457 mutex_unlock(&priv->mutex);
3458 return;
3459 }
3460
3461 /* we are restarting association process
3462 * clear RXON_FILTER_ASSOC_MSK bit
3463 */
3464 if (priv->iw_mode != IEEE80211_IF_TYPE_AP) {
3465 iwl_scan_cancel_timeout(priv, 100);
3466 priv->staging_rxon.filter_flags &= ~RXON_FILTER_ASSOC_MSK;
3467 iwl4965_commit_rxon(priv);
3468 }
3469
3470 iwl_power_update_mode(priv, 0);
3471
3472 /* Per mac80211.h: This is only used in IBSS mode... */
3473 if (priv->iw_mode != IEEE80211_IF_TYPE_IBSS) {
3474
3475 IWL_DEBUG_MAC80211("leave - not in IBSS\n");
3476 mutex_unlock(&priv->mutex);
3477 return;
3478 }
3479
3480 iwl4965_set_rate(priv);
3481
3482 mutex_unlock(&priv->mutex);
3483
3484 IWL_DEBUG_MAC80211("leave\n");
3485 }
3486
3487 static int iwl4965_mac_beacon_update(struct ieee80211_hw *hw, struct sk_buff *skb)
3488 {
3489 struct iwl_priv *priv = hw->priv;
3490 unsigned long flags;
3491
3492 mutex_lock(&priv->mutex);
3493 IWL_DEBUG_MAC80211("enter\n");
3494
3495 if (!iwl_is_ready_rf(priv)) {
3496 IWL_DEBUG_MAC80211("leave - RF not ready\n");
3497 mutex_unlock(&priv->mutex);
3498 return -EIO;
3499 }
3500
3501 if (priv->iw_mode != IEEE80211_IF_TYPE_IBSS) {
3502 IWL_DEBUG_MAC80211("leave - not IBSS\n");
3503 mutex_unlock(&priv->mutex);
3504 return -EIO;
3505 }
3506
3507 spin_lock_irqsave(&priv->lock, flags);
3508
3509 if (priv->ibss_beacon)
3510 dev_kfree_skb(priv->ibss_beacon);
3511
3512 priv->ibss_beacon = skb;
3513
3514 priv->assoc_id = 0;
3515
3516 IWL_DEBUG_MAC80211("leave\n");
3517 spin_unlock_irqrestore(&priv->lock, flags);
3518
3519 iwl_reset_qos(priv);
3520
3521 iwl4965_post_associate(priv);
3522
3523 mutex_unlock(&priv->mutex);
3524
3525 return 0;
3526 }
3527
3528 /*****************************************************************************
3529 *
3530 * sysfs attributes
3531 *
3532 *****************************************************************************/
3533
3534 #ifdef CONFIG_IWLWIFI_DEBUG
3535
3536 /*
3537 * The following adds a new attribute to the sysfs representation
3538 * of this device driver (i.e. a new file in /sys/bus/pci/drivers/iwl/)
3539 * used for controlling the debug level.
3540 *
3541 * See the level definitions in iwl for details.
3542 */
3543
3544 static ssize_t show_debug_level(struct device *d,
3545 struct device_attribute *attr, char *buf)
3546 {
3547 struct iwl_priv *priv = d->driver_data;
3548
3549 return sprintf(buf, "0x%08X\n", priv->debug_level);
3550 }
3551 static ssize_t store_debug_level(struct device *d,
3552 struct device_attribute *attr,
3553 const char *buf, size_t count)
3554 {
3555 struct iwl_priv *priv = d->driver_data;
3556 char *p = (char *)buf;
3557 u32 val;
3558
3559 val = simple_strtoul(p, &p, 0);
3560 if (p == buf)
3561 printk(KERN_INFO DRV_NAME
3562 ": %s is not in hex or decimal form.\n", buf);
3563 else
3564 priv->debug_level = val;
3565
3566 return strnlen(buf, count);
3567 }
3568
3569 static DEVICE_ATTR(debug_level, S_IWUSR | S_IRUGO,
3570 show_debug_level, store_debug_level);
3571
3572
3573 #endif /* CONFIG_IWLWIFI_DEBUG */
3574
3575
3576 static ssize_t show_version(struct device *d,
3577 struct device_attribute *attr, char *buf)
3578 {
3579 struct iwl_priv *priv = d->driver_data;
3580 struct iwl_alive_resp *palive = &priv->card_alive;
3581 ssize_t pos = 0;
3582 u16 eeprom_ver;
3583
3584 if (palive->is_valid)
3585 pos += sprintf(buf + pos,
3586 "fw version: 0x%01X.0x%01X.0x%01X.0x%01X\n"
3587 "fw type: 0x%01X 0x%01X\n",
3588 palive->ucode_major, palive->ucode_minor,
3589 palive->sw_rev[0], palive->sw_rev[1],
3590 palive->ver_type, palive->ver_subtype);
3591 else
3592 pos += sprintf(buf + pos, "fw not loaded\n");
3593
3594 if (priv->eeprom) {
3595 eeprom_ver = iwl_eeprom_query16(priv, EEPROM_VERSION);
3596 pos += sprintf(buf + pos, "EEPROM version: 0x%x\n",
3597 eeprom_ver);
3598 } else {
3599 pos += sprintf(buf + pos, "EEPROM not initialzed\n");
3600 }
3601
3602 return pos;
3603 }
3604
3605 static DEVICE_ATTR(version, S_IWUSR | S_IRUGO, show_version, NULL);
3606
3607 static ssize_t show_temperature(struct device *d,
3608 struct device_attribute *attr, char *buf)
3609 {
3610 struct iwl_priv *priv = (struct iwl_priv *)d->driver_data;
3611
3612 if (!iwl_is_alive(priv))
3613 return -EAGAIN;
3614
3615 return sprintf(buf, "%d\n", priv->temperature);
3616 }
3617
3618 static DEVICE_ATTR(temperature, S_IRUGO, show_temperature, NULL);
3619
3620 static ssize_t show_rs_window(struct device *d,
3621 struct device_attribute *attr,
3622 char *buf)
3623 {
3624 struct iwl_priv *priv = d->driver_data;
3625 return iwl4965_fill_rs_info(priv->hw, buf, IWL_AP_ID);
3626 }
3627 static DEVICE_ATTR(rs_window, S_IRUGO, show_rs_window, NULL);
3628
3629 static ssize_t show_tx_power(struct device *d,
3630 struct device_attribute *attr, char *buf)
3631 {
3632 struct iwl_priv *priv = (struct iwl_priv *)d->driver_data;
3633 return sprintf(buf, "%d\n", priv->tx_power_user_lmt);
3634 }
3635
3636 static ssize_t store_tx_power(struct device *d,
3637 struct device_attribute *attr,
3638 const char *buf, size_t count)
3639 {
3640 struct iwl_priv *priv = (struct iwl_priv *)d->driver_data;
3641 char *p = (char *)buf;
3642 u32 val;
3643
3644 val = simple_strtoul(p, &p, 10);
3645 if (p == buf)
3646 printk(KERN_INFO DRV_NAME
3647 ": %s is not in decimal form.\n", buf);
3648 else
3649 iwl_set_tx_power(priv, val, false);
3650
3651 return count;
3652 }
3653
3654 static DEVICE_ATTR(tx_power, S_IWUSR | S_IRUGO, show_tx_power, store_tx_power);
3655
3656 static ssize_t show_flags(struct device *d,
3657 struct device_attribute *attr, char *buf)
3658 {
3659 struct iwl_priv *priv = (struct iwl_priv *)d->driver_data;
3660
3661 return sprintf(buf, "0x%04X\n", priv->active_rxon.flags);
3662 }
3663
3664 static ssize_t store_flags(struct device *d,
3665 struct device_attribute *attr,
3666 const char *buf, size_t count)
3667 {
3668 struct iwl_priv *priv = (struct iwl_priv *)d->driver_data;
3669 u32 flags = simple_strtoul(buf, NULL, 0);
3670
3671 mutex_lock(&priv->mutex);
3672 if (le32_to_cpu(priv->staging_rxon.flags) != flags) {
3673 /* Cancel any currently running scans... */
3674 if (iwl_scan_cancel_timeout(priv, 100))
3675 IWL_WARNING("Could not cancel scan.\n");
3676 else {
3677 IWL_DEBUG_INFO("Committing rxon.flags = 0x%04X\n",
3678 flags);
3679 priv->staging_rxon.flags = cpu_to_le32(flags);
3680 iwl4965_commit_rxon(priv);
3681 }
3682 }
3683 mutex_unlock(&priv->mutex);
3684
3685 return count;
3686 }
3687
3688 static DEVICE_ATTR(flags, S_IWUSR | S_IRUGO, show_flags, store_flags);
3689
3690 static ssize_t show_filter_flags(struct device *d,
3691 struct device_attribute *attr, char *buf)
3692 {
3693 struct iwl_priv *priv = (struct iwl_priv *)d->driver_data;
3694
3695 return sprintf(buf, "0x%04X\n",
3696 le32_to_cpu(priv->active_rxon.filter_flags));
3697 }
3698
3699 static ssize_t store_filter_flags(struct device *d,
3700 struct device_attribute *attr,
3701 const char *buf, size_t count)
3702 {
3703 struct iwl_priv *priv = (struct iwl_priv *)d->driver_data;
3704 u32 filter_flags = simple_strtoul(buf, NULL, 0);
3705
3706 mutex_lock(&priv->mutex);
3707 if (le32_to_cpu(priv->staging_rxon.filter_flags) != filter_flags) {
3708 /* Cancel any currently running scans... */
3709 if (iwl_scan_cancel_timeout(priv, 100))
3710 IWL_WARNING("Could not cancel scan.\n");
3711 else {
3712 IWL_DEBUG_INFO("Committing rxon.filter_flags = "
3713 "0x%04X\n", filter_flags);
3714 priv->staging_rxon.filter_flags =
3715 cpu_to_le32(filter_flags);
3716 iwl4965_commit_rxon(priv);
3717 }
3718 }
3719 mutex_unlock(&priv->mutex);
3720
3721 return count;
3722 }
3723
3724 static DEVICE_ATTR(filter_flags, S_IWUSR | S_IRUGO, show_filter_flags,
3725 store_filter_flags);
3726
3727 #ifdef CONFIG_IWL4965_SPECTRUM_MEASUREMENT
3728
3729 static ssize_t show_measurement(struct device *d,
3730 struct device_attribute *attr, char *buf)
3731 {
3732 struct iwl_priv *priv = dev_get_drvdata(d);
3733 struct iwl4965_spectrum_notification measure_report;
3734 u32 size = sizeof(measure_report), len = 0, ofs = 0;
3735 u8 *data = (u8 *) & measure_report;
3736 unsigned long flags;
3737
3738 spin_lock_irqsave(&priv->lock, flags);
3739 if (!(priv->measurement_status & MEASUREMENT_READY)) {
3740 spin_unlock_irqrestore(&priv->lock, flags);
3741 return 0;
3742 }
3743 memcpy(&measure_report, &priv->measure_report, size);
3744 priv->measurement_status = 0;
3745 spin_unlock_irqrestore(&priv->lock, flags);
3746
3747 while (size && (PAGE_SIZE - len)) {
3748 hex_dump_to_buffer(data + ofs, size, 16, 1, buf + len,
3749 PAGE_SIZE - len, 1);
3750 len = strlen(buf);
3751 if (PAGE_SIZE - len)
3752 buf[len++] = '\n';
3753
3754 ofs += 16;
3755 size -= min(size, 16U);
3756 }
3757
3758 return len;
3759 }
3760
3761 static ssize_t store_measurement(struct device *d,
3762 struct device_attribute *attr,
3763 const char *buf, size_t count)
3764 {
3765 struct iwl_priv *priv = dev_get_drvdata(d);
3766 struct ieee80211_measurement_params params = {
3767 .channel = le16_to_cpu(priv->active_rxon.channel),
3768 .start_time = cpu_to_le64(priv->last_tsf),
3769 .duration = cpu_to_le16(1),
3770 };
3771 u8 type = IWL_MEASURE_BASIC;
3772 u8 buffer[32];
3773 u8 channel;
3774
3775 if (count) {
3776 char *p = buffer;
3777 strncpy(buffer, buf, min(sizeof(buffer), count));
3778 channel = simple_strtoul(p, NULL, 0);
3779 if (channel)
3780 params.channel = channel;
3781
3782 p = buffer;
3783 while (*p && *p != ' ')
3784 p++;
3785 if (*p)
3786 type = simple_strtoul(p + 1, NULL, 0);
3787 }
3788
3789 IWL_DEBUG_INFO("Invoking measurement of type %d on "
3790 "channel %d (for '%s')\n", type, params.channel, buf);
3791 iwl4965_get_measurement(priv, &params, type);
3792
3793 return count;
3794 }
3795
3796 static DEVICE_ATTR(measurement, S_IRUSR | S_IWUSR,
3797 show_measurement, store_measurement);
3798 #endif /* CONFIG_IWL4965_SPECTRUM_MEASUREMENT */
3799
3800 static ssize_t store_retry_rate(struct device *d,
3801 struct device_attribute *attr,
3802 const char *buf, size_t count)
3803 {
3804 struct iwl_priv *priv = dev_get_drvdata(d);
3805
3806 priv->retry_rate = simple_strtoul(buf, NULL, 0);
3807 if (priv->retry_rate <= 0)
3808 priv->retry_rate = 1;
3809
3810 return count;
3811 }
3812
3813 static ssize_t show_retry_rate(struct device *d,
3814 struct device_attribute *attr, char *buf)
3815 {
3816 struct iwl_priv *priv = dev_get_drvdata(d);
3817 return sprintf(buf, "%d", priv->retry_rate);
3818 }
3819
3820 static DEVICE_ATTR(retry_rate, S_IWUSR | S_IRUSR, show_retry_rate,
3821 store_retry_rate);
3822
3823 static ssize_t store_power_level(struct device *d,
3824 struct device_attribute *attr,
3825 const char *buf, size_t count)
3826 {
3827 struct iwl_priv *priv = dev_get_drvdata(d);
3828 int rc;
3829 int mode;
3830
3831 mode = simple_strtoul(buf, NULL, 0);
3832 mutex_lock(&priv->mutex);
3833
3834 if (!iwl_is_ready(priv)) {
3835 rc = -EAGAIN;
3836 goto out;
3837 }
3838
3839 rc = iwl_power_set_user_mode(priv, mode);
3840 if (rc) {
3841 IWL_DEBUG_MAC80211("failed setting power mode.\n");
3842 goto out;
3843 }
3844 rc = count;
3845
3846 out:
3847 mutex_unlock(&priv->mutex);
3848 return rc;
3849 }
3850
3851 #define MAX_WX_STRING 80
3852
3853 /* Values are in microsecond */
3854 static const s32 timeout_duration[] = {
3855 350000,
3856 250000,
3857 75000,
3858 37000,
3859 25000,
3860 };
3861 static const s32 period_duration[] = {
3862 400000,
3863 700000,
3864 1000000,
3865 1000000,
3866 1000000
3867 };
3868
3869 static ssize_t show_power_level(struct device *d,
3870 struct device_attribute *attr, char *buf)
3871 {
3872 struct iwl_priv *priv = dev_get_drvdata(d);
3873 int level = priv->power_data.power_mode;
3874 char *p = buf;
3875
3876 p += sprintf(p, "%d ", level);
3877 switch (level) {
3878 case IWL_POWER_MODE_CAM:
3879 case IWL_POWER_AC:
3880 p += sprintf(p, "(AC)");
3881 break;
3882 case IWL_POWER_BATTERY:
3883 p += sprintf(p, "(BATTERY)");
3884 break;
3885 default:
3886 p += sprintf(p,
3887 "(Timeout %dms, Period %dms)",
3888 timeout_duration[level - 1] / 1000,
3889 period_duration[level - 1] / 1000);
3890 }
3891 /*
3892 if (!(priv->power_mode & IWL_POWER_ENABLED))
3893 p += sprintf(p, " OFF\n");
3894 else
3895 p += sprintf(p, " \n");
3896 */
3897 p += sprintf(p, " \n");
3898 return (p - buf + 1);
3899 }
3900
3901 static DEVICE_ATTR(power_level, S_IWUSR | S_IRUSR, show_power_level,
3902 store_power_level);
3903
3904 static ssize_t show_channels(struct device *d,
3905 struct device_attribute *attr, char *buf)
3906 {
3907
3908 struct iwl_priv *priv = dev_get_drvdata(d);
3909 struct ieee80211_channel *channels = NULL;
3910 const struct ieee80211_supported_band *supp_band = NULL;
3911 int len = 0, i;
3912 int count = 0;
3913
3914 if (!test_bit(STATUS_GEO_CONFIGURED, &priv->status))
3915 return -EAGAIN;
3916
3917 supp_band = iwl_get_hw_mode(priv, IEEE80211_BAND_2GHZ);
3918 channels = supp_band->channels;
3919 count = supp_band->n_channels;
3920
3921 len += sprintf(&buf[len],
3922 "Displaying %d channels in 2.4GHz band "
3923 "(802.11bg):\n", count);
3924
3925 for (i = 0; i < count; i++)
3926 len += sprintf(&buf[len], "%d: %ddBm: BSS%s%s, %s.\n",
3927 ieee80211_frequency_to_channel(
3928 channels[i].center_freq),
3929 channels[i].max_power,
3930 channels[i].flags & IEEE80211_CHAN_RADAR ?
3931 " (IEEE 802.11h required)" : "",
3932 (!(channels[i].flags & IEEE80211_CHAN_NO_IBSS)
3933 || (channels[i].flags &
3934 IEEE80211_CHAN_RADAR)) ? "" :
3935 ", IBSS",
3936 channels[i].flags &
3937 IEEE80211_CHAN_PASSIVE_SCAN ?
3938 "passive only" : "active/passive");
3939
3940 supp_band = iwl_get_hw_mode(priv, IEEE80211_BAND_5GHZ);
3941 channels = supp_band->channels;
3942 count = supp_band->n_channels;
3943
3944 len += sprintf(&buf[len], "Displaying %d channels in 5.2GHz band "
3945 "(802.11a):\n", count);
3946
3947 for (i = 0; i < count; i++)
3948 len += sprintf(&buf[len], "%d: %ddBm: BSS%s%s, %s.\n",
3949 ieee80211_frequency_to_channel(
3950 channels[i].center_freq),
3951 channels[i].max_power,
3952 channels[i].flags & IEEE80211_CHAN_RADAR ?
3953 " (IEEE 802.11h required)" : "",
3954 ((channels[i].flags & IEEE80211_CHAN_NO_IBSS)
3955 || (channels[i].flags &
3956 IEEE80211_CHAN_RADAR)) ? "" :
3957 ", IBSS",
3958 channels[i].flags &
3959 IEEE80211_CHAN_PASSIVE_SCAN ?
3960 "passive only" : "active/passive");
3961
3962 return len;
3963 }
3964
3965 static DEVICE_ATTR(channels, S_IRUSR, show_channels, NULL);
3966
3967 static ssize_t show_statistics(struct device *d,
3968 struct device_attribute *attr, char *buf)
3969 {
3970 struct iwl_priv *priv = dev_get_drvdata(d);
3971 u32 size = sizeof(struct iwl_notif_statistics);
3972 u32 len = 0, ofs = 0;
3973 u8 *data = (u8 *) & priv->statistics;
3974 int rc = 0;
3975
3976 if (!iwl_is_alive(priv))
3977 return -EAGAIN;
3978
3979 mutex_lock(&priv->mutex);
3980 rc = iwl_send_statistics_request(priv, 0);
3981 mutex_unlock(&priv->mutex);
3982
3983 if (rc) {
3984 len = sprintf(buf,
3985 "Error sending statistics request: 0x%08X\n", rc);
3986 return len;
3987 }
3988
3989 while (size && (PAGE_SIZE - len)) {
3990 hex_dump_to_buffer(data + ofs, size, 16, 1, buf + len,
3991 PAGE_SIZE - len, 1);
3992 len = strlen(buf);
3993 if (PAGE_SIZE - len)
3994 buf[len++] = '\n';
3995
3996 ofs += 16;
3997 size -= min(size, 16U);
3998 }
3999
4000 return len;
4001 }
4002
4003 static DEVICE_ATTR(statistics, S_IRUGO, show_statistics, NULL);
4004
4005 static ssize_t show_status(struct device *d,
4006 struct device_attribute *attr, char *buf)
4007 {
4008 struct iwl_priv *priv = (struct iwl_priv *)d->driver_data;
4009 if (!iwl_is_alive(priv))
4010 return -EAGAIN;
4011 return sprintf(buf, "0x%08x\n", (int)priv->status);
4012 }
4013
4014 static DEVICE_ATTR(status, S_IRUGO, show_status, NULL);
4015
4016 /*****************************************************************************
4017 *
4018 * driver setup and teardown
4019 *
4020 *****************************************************************************/
4021
4022 static void iwl_setup_deferred_work(struct iwl_priv *priv)
4023 {
4024 priv->workqueue = create_workqueue(DRV_NAME);
4025
4026 init_waitqueue_head(&priv->wait_command_queue);
4027
4028 INIT_WORK(&priv->up, iwl4965_bg_up);
4029 INIT_WORK(&priv->restart, iwl4965_bg_restart);
4030 INIT_WORK(&priv->rx_replenish, iwl4965_bg_rx_replenish);
4031 INIT_WORK(&priv->rf_kill, iwl4965_bg_rf_kill);
4032 INIT_WORK(&priv->beacon_update, iwl4965_bg_beacon_update);
4033 INIT_WORK(&priv->set_monitor, iwl4965_bg_set_monitor);
4034 INIT_WORK(&priv->run_time_calib_work, iwl_bg_run_time_calib_work);
4035 INIT_DELAYED_WORK(&priv->post_associate, iwl4965_bg_post_associate);
4036 INIT_DELAYED_WORK(&priv->init_alive_start, iwl_bg_init_alive_start);
4037 INIT_DELAYED_WORK(&priv->alive_start, iwl_bg_alive_start);
4038
4039 /* FIXME : remove when resolved PENDING */
4040 INIT_WORK(&priv->scan_completed, iwl_bg_scan_completed);
4041 iwl_setup_scan_deferred_work(priv);
4042
4043 if (priv->cfg->ops->lib->setup_deferred_work)
4044 priv->cfg->ops->lib->setup_deferred_work(priv);
4045
4046 init_timer(&priv->statistics_periodic);
4047 priv->statistics_periodic.data = (unsigned long)priv;
4048 priv->statistics_periodic.function = iwl4965_bg_statistics_periodic;
4049
4050 tasklet_init(&priv->irq_tasklet, (void (*)(unsigned long))
4051 iwl4965_irq_tasklet, (unsigned long)priv);
4052 }
4053
4054 static void iwl_cancel_deferred_work(struct iwl_priv *priv)
4055 {
4056 if (priv->cfg->ops->lib->cancel_deferred_work)
4057 priv->cfg->ops->lib->cancel_deferred_work(priv);
4058
4059 cancel_delayed_work_sync(&priv->init_alive_start);
4060 cancel_delayed_work(&priv->scan_check);
4061 cancel_delayed_work(&priv->alive_start);
4062 cancel_delayed_work(&priv->post_associate);
4063 cancel_work_sync(&priv->beacon_update);
4064 del_timer_sync(&priv->statistics_periodic);
4065 }
4066
4067 static struct attribute *iwl4965_sysfs_entries[] = {
4068 &dev_attr_channels.attr,
4069 &dev_attr_flags.attr,
4070 &dev_attr_filter_flags.attr,
4071 #ifdef CONFIG_IWL4965_SPECTRUM_MEASUREMENT
4072 &dev_attr_measurement.attr,
4073 #endif
4074 &dev_attr_power_level.attr,
4075 &dev_attr_retry_rate.attr,
4076 &dev_attr_rs_window.attr,
4077 &dev_attr_statistics.attr,
4078 &dev_attr_status.attr,
4079 &dev_attr_temperature.attr,
4080 &dev_attr_tx_power.attr,
4081 #ifdef CONFIG_IWLWIFI_DEBUG
4082 &dev_attr_debug_level.attr,
4083 #endif
4084 &dev_attr_version.attr,
4085
4086 NULL
4087 };
4088
4089 static struct attribute_group iwl4965_attribute_group = {
4090 .name = NULL, /* put in device directory */
4091 .attrs = iwl4965_sysfs_entries,
4092 };
4093
4094 static struct ieee80211_ops iwl4965_hw_ops = {
4095 .tx = iwl4965_mac_tx,
4096 .start = iwl4965_mac_start,
4097 .stop = iwl4965_mac_stop,
4098 .add_interface = iwl4965_mac_add_interface,
4099 .remove_interface = iwl4965_mac_remove_interface,
4100 .config = iwl4965_mac_config,
4101 .config_interface = iwl4965_mac_config_interface,
4102 .configure_filter = iwl4965_configure_filter,
4103 .set_key = iwl4965_mac_set_key,
4104 .update_tkip_key = iwl4965_mac_update_tkip_key,
4105 .get_stats = iwl4965_mac_get_stats,
4106 .get_tx_stats = iwl4965_mac_get_tx_stats,
4107 .conf_tx = iwl4965_mac_conf_tx,
4108 .get_tsf = iwl4965_mac_get_tsf,
4109 .reset_tsf = iwl4965_mac_reset_tsf,
4110 .beacon_update = iwl4965_mac_beacon_update,
4111 .bss_info_changed = iwl4965_bss_info_changed,
4112 .ampdu_action = iwl4965_mac_ampdu_action,
4113 .hw_scan = iwl4965_mac_hw_scan
4114 };
4115
4116 static int iwl4965_pci_probe(struct pci_dev *pdev, const struct pci_device_id *ent)
4117 {
4118 int err = 0;
4119 struct iwl_priv *priv;
4120 struct ieee80211_hw *hw;
4121 struct iwl_cfg *cfg = (struct iwl_cfg *)(ent->driver_data);
4122 unsigned long flags;
4123 DECLARE_MAC_BUF(mac);
4124
4125 /************************
4126 * 1. Allocating HW data
4127 ************************/
4128
4129 /* Disabling hardware scan means that mac80211 will perform scans
4130 * "the hard way", rather than using device's scan. */
4131 if (cfg->mod_params->disable_hw_scan) {
4132 if (cfg->mod_params->debug & IWL_DL_INFO)
4133 dev_printk(KERN_DEBUG, &(pdev->dev),
4134 "Disabling hw_scan\n");
4135 iwl4965_hw_ops.hw_scan = NULL;
4136 }
4137
4138 hw = iwl_alloc_all(cfg, &iwl4965_hw_ops);
4139 if (!hw) {
4140 err = -ENOMEM;
4141 goto out;
4142 }
4143 priv = hw->priv;
4144 /* At this point both hw and priv are allocated. */
4145
4146 SET_IEEE80211_DEV(hw, &pdev->dev);
4147
4148 IWL_DEBUG_INFO("*** LOAD DRIVER ***\n");
4149 priv->cfg = cfg;
4150 priv->pci_dev = pdev;
4151
4152 #ifdef CONFIG_IWLWIFI_DEBUG
4153 priv->debug_level = priv->cfg->mod_params->debug;
4154 atomic_set(&priv->restrict_refcnt, 0);
4155 #endif
4156
4157 /**************************
4158 * 2. Initializing PCI bus
4159 **************************/
4160 if (pci_enable_device(pdev)) {
4161 err = -ENODEV;
4162 goto out_ieee80211_free_hw;
4163 }
4164
4165 pci_set_master(pdev);
4166
4167 err = pci_set_dma_mask(pdev, DMA_64BIT_MASK);
4168 if (!err)
4169 err = pci_set_consistent_dma_mask(pdev, DMA_64BIT_MASK);
4170 if (err) {
4171 err = pci_set_dma_mask(pdev, DMA_32BIT_MASK);
4172 if (!err)
4173 err = pci_set_consistent_dma_mask(pdev, DMA_32BIT_MASK);
4174 /* both attempts failed: */
4175 if (err) {
4176 printk(KERN_WARNING "%s: No suitable DMA available.\n",
4177 DRV_NAME);
4178 goto out_pci_disable_device;
4179 }
4180 }
4181
4182 err = pci_request_regions(pdev, DRV_NAME);
4183 if (err)
4184 goto out_pci_disable_device;
4185
4186 pci_set_drvdata(pdev, priv);
4187
4188 /* We disable the RETRY_TIMEOUT register (0x41) to keep
4189 * PCI Tx retries from interfering with C3 CPU state */
4190 pci_write_config_byte(pdev, 0x41, 0x00);
4191
4192 /***********************
4193 * 3. Read REV register
4194 ***********************/
4195 priv->hw_base = pci_iomap(pdev, 0, 0);
4196 if (!priv->hw_base) {
4197 err = -ENODEV;
4198 goto out_pci_release_regions;
4199 }
4200
4201 IWL_DEBUG_INFO("pci_resource_len = 0x%08llx\n",
4202 (unsigned long long) pci_resource_len(pdev, 0));
4203 IWL_DEBUG_INFO("pci_resource_base = %p\n", priv->hw_base);
4204
4205 iwl_hw_detect(priv);
4206 printk(KERN_INFO DRV_NAME
4207 ": Detected Intel Wireless WiFi Link %s REV=0x%X\n",
4208 priv->cfg->name, priv->hw_rev);
4209
4210 /* amp init */
4211 err = priv->cfg->ops->lib->apm_ops.init(priv);
4212 if (err < 0) {
4213 IWL_DEBUG_INFO("Failed to init APMG\n");
4214 goto out_iounmap;
4215 }
4216 /*****************
4217 * 4. Read EEPROM
4218 *****************/
4219 /* Read the EEPROM */
4220 err = iwl_eeprom_init(priv);
4221 if (err) {
4222 IWL_ERROR("Unable to init EEPROM\n");
4223 goto out_iounmap;
4224 }
4225 err = iwl_eeprom_check_version(priv);
4226 if (err)
4227 goto out_iounmap;
4228
4229 /* extract MAC Address */
4230 iwl_eeprom_get_mac(priv, priv->mac_addr);
4231 IWL_DEBUG_INFO("MAC address: %s\n", print_mac(mac, priv->mac_addr));
4232 SET_IEEE80211_PERM_ADDR(priv->hw, priv->mac_addr);
4233
4234 /************************
4235 * 5. Setup HW constants
4236 ************************/
4237 /* Device-specific setup */
4238 if (priv->cfg->ops->lib->set_hw_params(priv)) {
4239 IWL_ERROR("failed to set hw parameters\n");
4240 goto out_free_eeprom;
4241 }
4242
4243 /*******************
4244 * 6. Setup priv
4245 *******************/
4246
4247 err = iwl_init_drv(priv);
4248 if (err)
4249 goto out_free_eeprom;
4250 /* At this point both hw and priv are initialized. */
4251
4252 /**********************************
4253 * 7. Initialize module parameters
4254 **********************************/
4255
4256 /* Disable radio (SW RF KILL) via parameter when loading driver */
4257 if (priv->cfg->mod_params->disable) {
4258 set_bit(STATUS_RF_KILL_SW, &priv->status);
4259 IWL_DEBUG_INFO("Radio disabled.\n");
4260 }
4261
4262 /********************
4263 * 8. Setup services
4264 ********************/
4265 spin_lock_irqsave(&priv->lock, flags);
4266 iwl4965_disable_interrupts(priv);
4267 spin_unlock_irqrestore(&priv->lock, flags);
4268
4269 err = sysfs_create_group(&pdev->dev.kobj, &iwl4965_attribute_group);
4270 if (err) {
4271 IWL_ERROR("failed to create sysfs device attributes\n");
4272 goto out_uninit_drv;
4273 }
4274
4275
4276 iwl_setup_deferred_work(priv);
4277 iwl_setup_rx_handlers(priv);
4278
4279 /********************
4280 * 9. Conclude
4281 ********************/
4282 pci_save_state(pdev);
4283 pci_disable_device(pdev);
4284
4285 /**********************************
4286 * 10. Setup and register mac80211
4287 **********************************/
4288
4289 err = iwl_setup_mac(priv);
4290 if (err)
4291 goto out_remove_sysfs;
4292
4293 err = iwl_dbgfs_register(priv, DRV_NAME);
4294 if (err)
4295 IWL_ERROR("failed to create debugfs files\n");
4296
4297 err = iwl_rfkill_init(priv);
4298 if (err)
4299 IWL_ERROR("Unable to initialize RFKILL system. "
4300 "Ignoring error: %d\n", err);
4301 iwl_power_initialize(priv);
4302 return 0;
4303
4304 out_remove_sysfs:
4305 sysfs_remove_group(&pdev->dev.kobj, &iwl4965_attribute_group);
4306 out_uninit_drv:
4307 iwl_uninit_drv(priv);
4308 out_free_eeprom:
4309 iwl_eeprom_free(priv);
4310 out_iounmap:
4311 pci_iounmap(pdev, priv->hw_base);
4312 out_pci_release_regions:
4313 pci_release_regions(pdev);
4314 pci_set_drvdata(pdev, NULL);
4315 out_pci_disable_device:
4316 pci_disable_device(pdev);
4317 out_ieee80211_free_hw:
4318 ieee80211_free_hw(priv->hw);
4319 out:
4320 return err;
4321 }
4322
4323 static void __devexit iwl4965_pci_remove(struct pci_dev *pdev)
4324 {
4325 struct iwl_priv *priv = pci_get_drvdata(pdev);
4326 unsigned long flags;
4327
4328 if (!priv)
4329 return;
4330
4331 IWL_DEBUG_INFO("*** UNLOAD DRIVER ***\n");
4332
4333 iwl_dbgfs_unregister(priv);
4334 sysfs_remove_group(&pdev->dev.kobj, &iwl4965_attribute_group);
4335
4336 if (priv->mac80211_registered) {
4337 ieee80211_unregister_hw(priv->hw);
4338 priv->mac80211_registered = 0;
4339 }
4340
4341 set_bit(STATUS_EXIT_PENDING, &priv->status);
4342
4343 iwl4965_down(priv);
4344
4345 /* make sure we flush any pending irq or
4346 * tasklet for the driver
4347 */
4348 spin_lock_irqsave(&priv->lock, flags);
4349 iwl4965_disable_interrupts(priv);
4350 spin_unlock_irqrestore(&priv->lock, flags);
4351
4352 iwl_synchronize_irq(priv);
4353
4354 iwl_rfkill_unregister(priv);
4355 iwl4965_dealloc_ucode_pci(priv);
4356
4357 if (priv->rxq.bd)
4358 iwl_rx_queue_free(priv, &priv->rxq);
4359 iwl_hw_txq_ctx_free(priv);
4360
4361 iwl_clear_stations_table(priv);
4362 iwl_eeprom_free(priv);
4363
4364
4365 /*netif_stop_queue(dev); */
4366 flush_workqueue(priv->workqueue);
4367
4368 /* ieee80211_unregister_hw calls iwl4965_mac_stop, which flushes
4369 * priv->workqueue... so we can't take down the workqueue
4370 * until now... */
4371 destroy_workqueue(priv->workqueue);
4372 priv->workqueue = NULL;
4373
4374 pci_iounmap(pdev, priv->hw_base);
4375 pci_release_regions(pdev);
4376 pci_disable_device(pdev);
4377 pci_set_drvdata(pdev, NULL);
4378
4379 iwl_uninit_drv(priv);
4380
4381 if (priv->ibss_beacon)
4382 dev_kfree_skb(priv->ibss_beacon);
4383
4384 ieee80211_free_hw(priv->hw);
4385 }
4386
4387 #ifdef CONFIG_PM
4388
4389 static int iwl4965_pci_suspend(struct pci_dev *pdev, pm_message_t state)
4390 {
4391 struct iwl_priv *priv = pci_get_drvdata(pdev);
4392
4393 if (priv->is_open) {
4394 set_bit(STATUS_IN_SUSPEND, &priv->status);
4395 iwl4965_mac_stop(priv->hw);
4396 priv->is_open = 1;
4397 }
4398
4399 pci_set_power_state(pdev, PCI_D3hot);
4400
4401 return 0;
4402 }
4403
4404 static int iwl4965_pci_resume(struct pci_dev *pdev)
4405 {
4406 struct iwl_priv *priv = pci_get_drvdata(pdev);
4407
4408 pci_set_power_state(pdev, PCI_D0);
4409
4410 if (priv->is_open)
4411 iwl4965_mac_start(priv->hw);
4412
4413 clear_bit(STATUS_IN_SUSPEND, &priv->status);
4414 return 0;
4415 }
4416
4417 #endif /* CONFIG_PM */
4418
4419 /*****************************************************************************
4420 *
4421 * driver and module entry point
4422 *
4423 *****************************************************************************/
4424
4425 /* Hardware specific file defines the PCI IDs table for that hardware module */
4426 static struct pci_device_id iwl_hw_card_ids[] = {
4427 {IWL_PCI_DEVICE(0x4229, PCI_ANY_ID, iwl4965_agn_cfg)},
4428 {IWL_PCI_DEVICE(0x4230, PCI_ANY_ID, iwl4965_agn_cfg)},
4429 #ifdef CONFIG_IWL5000
4430 {IWL_PCI_DEVICE(0x4235, PCI_ANY_ID, iwl5300_agn_cfg)},
4431 {IWL_PCI_DEVICE(0x4232, PCI_ANY_ID, iwl5100_agn_cfg)},
4432 {IWL_PCI_DEVICE(0x423A, PCI_ANY_ID, iwl5350_agn_cfg)},
4433 #endif /* CONFIG_IWL5000 */
4434 {0}
4435 };
4436 MODULE_DEVICE_TABLE(pci, iwl_hw_card_ids);
4437
4438 static struct pci_driver iwl_driver = {
4439 .name = DRV_NAME,
4440 .id_table = iwl_hw_card_ids,
4441 .probe = iwl4965_pci_probe,
4442 .remove = __devexit_p(iwl4965_pci_remove),
4443 #ifdef CONFIG_PM
4444 .suspend = iwl4965_pci_suspend,
4445 .resume = iwl4965_pci_resume,
4446 #endif
4447 };
4448
4449 static int __init iwl4965_init(void)
4450 {
4451
4452 int ret;
4453 printk(KERN_INFO DRV_NAME ": " DRV_DESCRIPTION ", " DRV_VERSION "\n");
4454 printk(KERN_INFO DRV_NAME ": " DRV_COPYRIGHT "\n");
4455
4456 ret = iwl4965_rate_control_register();
4457 if (ret) {
4458 IWL_ERROR("Unable to register rate control algorithm: %d\n", ret);
4459 return ret;
4460 }
4461
4462 ret = pci_register_driver(&iwl_driver);
4463 if (ret) {
4464 IWL_ERROR("Unable to initialize PCI module\n");
4465 goto error_register;
4466 }
4467
4468 return ret;
4469
4470 error_register:
4471 iwl4965_rate_control_unregister();
4472 return ret;
4473 }
4474
4475 static void __exit iwl4965_exit(void)
4476 {
4477 pci_unregister_driver(&iwl_driver);
4478 iwl4965_rate_control_unregister();
4479 }
4480
4481 module_exit(iwl4965_exit);
4482 module_init(iwl4965_init);
AMDTP streaming driver for the Linux FireWire stack (Juju)