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Merge commit 'v2.6.28-rc6' into irq/urgent
[deliverable/linux.git] / drivers / net / wireless / iwlwifi / iwl-agn.c
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/init.h>
33 #include <linux/pci.h>
34 #include <linux/dma-mapping.h>
35 #include <linux/delay.h>
36 #include <linux/skbuff.h>
37 #include <linux/netdevice.h>
38 #include <linux/wireless.h>
39 #include <linux/firmware.h>
40 #include <linux/etherdevice.h>
41 #include <linux/if_arp.h>
42
43 #include <net/mac80211.h>
44
45 #include <asm/div64.h>
46
47 #include "iwl-eeprom.h"
48 #include "iwl-dev.h"
49 #include "iwl-core.h"
50 #include "iwl-io.h"
51 #include "iwl-helpers.h"
52 #include "iwl-sta.h"
53 #include "iwl-calib.h"
54
55
56 /******************************************************************************
57 *
58 * module boiler plate
59 *
60 ******************************************************************************/
61
62 /*
63 * module name, copyright, version, etc.
64 * NOTE: DRV_NAME is defined in iwlwifi.h for use by iwl-debug.h and printk
65 */
66
67 #define DRV_DESCRIPTION "Intel(R) Wireless WiFi Link AGN driver for Linux"
68
69 #ifdef CONFIG_IWLWIFI_DEBUG
70 #define VD "d"
71 #else
72 #define VD
73 #endif
74
75 #ifdef CONFIG_IWLAGN_SPECTRUM_MEASUREMENT
76 #define VS "s"
77 #else
78 #define VS
79 #endif
80
81 #define DRV_VERSION IWLWIFI_VERSION VD VS
82
83
84 MODULE_DESCRIPTION(DRV_DESCRIPTION);
85 MODULE_VERSION(DRV_VERSION);
86 MODULE_AUTHOR(DRV_COPYRIGHT);
87 MODULE_LICENSE("GPL");
88 MODULE_ALIAS("iwl4965");
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 * iwl_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 iwl_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.assoc_id != priv->active_rxon.assoc_id))
211 return 1;
212
213 /* flags, filter_flags, ofdm_basic_rates, and cck_basic_rates can
214 * be updated with the RXON_ASSOC command -- however only some
215 * flag transitions are allowed using RXON_ASSOC */
216
217 /* Check if we are not switching bands */
218 if ((priv->staging_rxon.flags & RXON_FLG_BAND_24G_MSK) !=
219 (priv->active_rxon.flags & RXON_FLG_BAND_24G_MSK))
220 return 1;
221
222 /* Check if we are switching association toggle */
223 if ((priv->staging_rxon.filter_flags & RXON_FILTER_ASSOC_MSK) !=
224 (priv->active_rxon.filter_flags & RXON_FILTER_ASSOC_MSK))
225 return 1;
226
227 return 0;
228 }
229
230 /**
231 * iwl4965_commit_rxon - commit staging_rxon to hardware
232 *
233 * The RXON command in staging_rxon is committed to the hardware and
234 * the active_rxon structure is updated with the new data. This
235 * function correctly transitions out of the RXON_ASSOC_MSK state if
236 * a HW tune is required based on the RXON structure changes.
237 */
238 static int iwl4965_commit_rxon(struct iwl_priv *priv)
239 {
240 /* cast away the const for active_rxon in this function */
241 struct iwl_rxon_cmd *active_rxon = (void *)&priv->active_rxon;
242 DECLARE_MAC_BUF(mac);
243 int ret;
244 bool new_assoc =
245 !!(priv->staging_rxon.filter_flags & RXON_FILTER_ASSOC_MSK);
246
247 if (!iwl_is_alive(priv))
248 return -EBUSY;
249
250 /* always get timestamp with Rx frame */
251 priv->staging_rxon.flags |= RXON_FLG_TSF2HOST_MSK;
252 /* allow CTS-to-self if possible. this is relevant only for
253 * 5000, but will not damage 4965 */
254 priv->staging_rxon.flags |= RXON_FLG_SELF_CTS_EN;
255
256 ret = iwl4965_check_rxon_cmd(&priv->staging_rxon);
257 if (ret) {
258 IWL_ERROR("Invalid RXON configuration. Not committing.\n");
259 return -EINVAL;
260 }
261
262 /* If we don't need to send a full RXON, we can use
263 * iwl4965_rxon_assoc_cmd which is used to reconfigure filter
264 * and other flags for the current radio configuration. */
265 if (!iwl_full_rxon_required(priv)) {
266 ret = iwl_send_rxon_assoc(priv);
267 if (ret) {
268 IWL_ERROR("Error setting RXON_ASSOC (%d)\n", ret);
269 return ret;
270 }
271
272 memcpy(active_rxon, &priv->staging_rxon, sizeof(*active_rxon));
273 return 0;
274 }
275
276 /* station table will be cleared */
277 priv->assoc_station_added = 0;
278
279 /* If we are currently associated and the new config requires
280 * an RXON_ASSOC and the new config wants the associated mask enabled,
281 * we must clear the associated from the active configuration
282 * before we apply the new config */
283 if (iwl_is_associated(priv) && new_assoc) {
284 IWL_DEBUG_INFO("Toggling associated bit on current RXON\n");
285 active_rxon->filter_flags &= ~RXON_FILTER_ASSOC_MSK;
286
287 ret = iwl_send_cmd_pdu(priv, REPLY_RXON,
288 sizeof(struct iwl_rxon_cmd),
289 &priv->active_rxon);
290
291 /* If the mask clearing failed then we set
292 * active_rxon back to what it was previously */
293 if (ret) {
294 active_rxon->filter_flags |= RXON_FILTER_ASSOC_MSK;
295 IWL_ERROR("Error clearing ASSOC_MSK (%d)\n", ret);
296 return ret;
297 }
298 }
299
300 IWL_DEBUG_INFO("Sending RXON\n"
301 "* with%s RXON_FILTER_ASSOC_MSK\n"
302 "* channel = %d\n"
303 "* bssid = %s\n",
304 (new_assoc ? "" : "out"),
305 le16_to_cpu(priv->staging_rxon.channel),
306 print_mac(mac, priv->staging_rxon.bssid_addr));
307
308 iwl4965_set_rxon_hwcrypto(priv, !priv->hw_params.sw_crypto);
309
310 /* Apply the new configuration
311 * RXON unassoc clears the station table in uCode, send it before
312 * we add the bcast station. If assoc bit is set, we will send RXON
313 * after having added the bcast and bssid station.
314 */
315 if (!new_assoc) {
316 ret = iwl_send_cmd_pdu(priv, REPLY_RXON,
317 sizeof(struct iwl_rxon_cmd), &priv->staging_rxon);
318 if (ret) {
319 IWL_ERROR("Error setting new RXON (%d)\n", ret);
320 return ret;
321 }
322 memcpy(active_rxon, &priv->staging_rxon, sizeof(*active_rxon));
323 }
324
325 iwl_clear_stations_table(priv);
326
327 if (!priv->error_recovering)
328 priv->start_calib = 0;
329
330 /* Add the broadcast address so we can send broadcast frames */
331 if (iwl_rxon_add_station(priv, iwl_bcast_addr, 0) ==
332 IWL_INVALID_STATION) {
333 IWL_ERROR("Error adding BROADCAST address for transmit.\n");
334 return -EIO;
335 }
336
337 /* If we have set the ASSOC_MSK and we are in BSS mode then
338 * add the IWL_AP_ID to the station rate table */
339 if (new_assoc) {
340 if (priv->iw_mode == NL80211_IFTYPE_STATION) {
341 ret = iwl_rxon_add_station(priv,
342 priv->active_rxon.bssid_addr, 1);
343 if (ret == IWL_INVALID_STATION) {
344 IWL_ERROR("Error adding AP address for TX.\n");
345 return -EIO;
346 }
347 priv->assoc_station_added = 1;
348 if (priv->default_wep_key &&
349 iwl_send_static_wepkey_cmd(priv, 0))
350 IWL_ERROR("Could not send WEP static key.\n");
351 }
352
353 /* Apply the new configuration
354 * RXON assoc doesn't clear the station table in uCode,
355 */
356 ret = iwl_send_cmd_pdu(priv, REPLY_RXON,
357 sizeof(struct iwl_rxon_cmd), &priv->staging_rxon);
358 if (ret) {
359 IWL_ERROR("Error setting new RXON (%d)\n", ret);
360 return ret;
361 }
362 memcpy(active_rxon, &priv->staging_rxon, sizeof(*active_rxon));
363 }
364
365 iwl_init_sensitivity(priv);
366
367 /* If we issue a new RXON command which required a tune then we must
368 * send a new TXPOWER command or we won't be able to Tx any frames */
369 ret = iwl_set_tx_power(priv, priv->tx_power_user_lmt, true);
370 if (ret) {
371 IWL_ERROR("Error sending TX power (%d)\n", ret);
372 return ret;
373 }
374
375 return 0;
376 }
377
378 void iwl4965_update_chain_flags(struct iwl_priv *priv)
379 {
380
381 iwl_set_rxon_chain(priv);
382 iwl4965_commit_rxon(priv);
383 }
384
385 static int iwl4965_send_bt_config(struct iwl_priv *priv)
386 {
387 struct iwl4965_bt_cmd bt_cmd = {
388 .flags = 3,
389 .lead_time = 0xAA,
390 .max_kill = 1,
391 .kill_ack_mask = 0,
392 .kill_cts_mask = 0,
393 };
394
395 return iwl_send_cmd_pdu(priv, REPLY_BT_CONFIG,
396 sizeof(struct iwl4965_bt_cmd), &bt_cmd);
397 }
398
399 static void iwl_clear_free_frames(struct iwl_priv *priv)
400 {
401 struct list_head *element;
402
403 IWL_DEBUG_INFO("%d frames on pre-allocated heap on clear.\n",
404 priv->frames_count);
405
406 while (!list_empty(&priv->free_frames)) {
407 element = priv->free_frames.next;
408 list_del(element);
409 kfree(list_entry(element, struct iwl_frame, list));
410 priv->frames_count--;
411 }
412
413 if (priv->frames_count) {
414 IWL_WARNING("%d frames still in use. Did we lose one?\n",
415 priv->frames_count);
416 priv->frames_count = 0;
417 }
418 }
419
420 static struct iwl_frame *iwl_get_free_frame(struct iwl_priv *priv)
421 {
422 struct iwl_frame *frame;
423 struct list_head *element;
424 if (list_empty(&priv->free_frames)) {
425 frame = kzalloc(sizeof(*frame), GFP_KERNEL);
426 if (!frame) {
427 IWL_ERROR("Could not allocate frame!\n");
428 return NULL;
429 }
430
431 priv->frames_count++;
432 return frame;
433 }
434
435 element = priv->free_frames.next;
436 list_del(element);
437 return list_entry(element, struct iwl_frame, list);
438 }
439
440 static void iwl_free_frame(struct iwl_priv *priv, struct iwl_frame *frame)
441 {
442 memset(frame, 0, sizeof(*frame));
443 list_add(&frame->list, &priv->free_frames);
444 }
445
446 static unsigned int iwl_fill_beacon_frame(struct iwl_priv *priv,
447 struct ieee80211_hdr *hdr,
448 const u8 *dest, int left)
449 {
450 if (!iwl_is_associated(priv) || !priv->ibss_beacon ||
451 ((priv->iw_mode != NL80211_IFTYPE_ADHOC) &&
452 (priv->iw_mode != NL80211_IFTYPE_AP)))
453 return 0;
454
455 if (priv->ibss_beacon->len > left)
456 return 0;
457
458 memcpy(hdr, priv->ibss_beacon->data, priv->ibss_beacon->len);
459
460 return priv->ibss_beacon->len;
461 }
462
463 static u8 iwl4965_rate_get_lowest_plcp(struct iwl_priv *priv)
464 {
465 int i;
466 int rate_mask;
467
468 /* Set rate mask*/
469 if (priv->staging_rxon.flags & RXON_FLG_BAND_24G_MSK)
470 rate_mask = priv->active_rate_basic & 0xF;
471 else
472 rate_mask = priv->active_rate_basic & 0xFF0;
473
474 /* Find lowest valid rate */
475 for (i = IWL_RATE_1M_INDEX; i != IWL_RATE_INVALID;
476 i = iwl_rates[i].next_ieee) {
477 if (rate_mask & (1 << i))
478 return iwl_rates[i].plcp;
479 }
480
481 /* No valid rate was found. Assign the lowest one */
482 if (priv->staging_rxon.flags & RXON_FLG_BAND_24G_MSK)
483 return IWL_RATE_1M_PLCP;
484 else
485 return IWL_RATE_6M_PLCP;
486 }
487
488 static unsigned int iwl4965_hw_get_beacon_cmd(struct iwl_priv *priv,
489 struct iwl_frame *frame, u8 rate)
490 {
491 struct iwl_tx_beacon_cmd *tx_beacon_cmd;
492 unsigned int frame_size;
493
494 tx_beacon_cmd = &frame->u.beacon;
495 memset(tx_beacon_cmd, 0, sizeof(*tx_beacon_cmd));
496
497 tx_beacon_cmd->tx.sta_id = priv->hw_params.bcast_sta_id;
498 tx_beacon_cmd->tx.stop_time.life_time = TX_CMD_LIFE_TIME_INFINITE;
499
500 frame_size = iwl_fill_beacon_frame(priv, tx_beacon_cmd->frame,
501 iwl_bcast_addr,
502 sizeof(frame->u) - sizeof(*tx_beacon_cmd));
503
504 BUG_ON(frame_size > MAX_MPDU_SIZE);
505 tx_beacon_cmd->tx.len = cpu_to_le16((u16)frame_size);
506
507 if ((rate == IWL_RATE_1M_PLCP) || (rate >= IWL_RATE_2M_PLCP))
508 tx_beacon_cmd->tx.rate_n_flags =
509 iwl_hw_set_rate_n_flags(rate, RATE_MCS_CCK_MSK);
510 else
511 tx_beacon_cmd->tx.rate_n_flags =
512 iwl_hw_set_rate_n_flags(rate, 0);
513
514 tx_beacon_cmd->tx.tx_flags = TX_CMD_FLG_SEQ_CTL_MSK |
515 TX_CMD_FLG_TSF_MSK |
516 TX_CMD_FLG_STA_RATE_MSK;
517
518 return sizeof(*tx_beacon_cmd) + frame_size;
519 }
520 static int iwl4965_send_beacon_cmd(struct iwl_priv *priv)
521 {
522 struct iwl_frame *frame;
523 unsigned int frame_size;
524 int rc;
525 u8 rate;
526
527 frame = iwl_get_free_frame(priv);
528
529 if (!frame) {
530 IWL_ERROR("Could not obtain free frame buffer for beacon "
531 "command.\n");
532 return -ENOMEM;
533 }
534
535 rate = iwl4965_rate_get_lowest_plcp(priv);
536
537 frame_size = iwl4965_hw_get_beacon_cmd(priv, frame, rate);
538
539 rc = iwl_send_cmd_pdu(priv, REPLY_TX_BEACON, frame_size,
540 &frame->u.cmd[0]);
541
542 iwl_free_frame(priv, frame);
543
544 return rc;
545 }
546
547 /******************************************************************************
548 *
549 * Misc. internal state and helper functions
550 *
551 ******************************************************************************/
552
553 static void iwl4965_ht_conf(struct iwl_priv *priv,
554 struct ieee80211_bss_conf *bss_conf)
555 {
556 struct ieee80211_ht_info *ht_conf = bss_conf->ht_conf;
557 struct ieee80211_ht_bss_info *ht_bss_conf = bss_conf->ht_bss_conf;
558 struct iwl_ht_info *iwl_conf = &priv->current_ht_config;
559
560 IWL_DEBUG_MAC80211("enter: \n");
561
562 iwl_conf->is_ht = bss_conf->assoc_ht;
563
564 if (!iwl_conf->is_ht)
565 return;
566
567 if (ht_conf->cap & IEEE80211_HT_CAP_SGI_20)
568 iwl_conf->sgf |= HT_SHORT_GI_20MHZ;
569 if (ht_conf->cap & IEEE80211_HT_CAP_SGI_40)
570 iwl_conf->sgf |= HT_SHORT_GI_40MHZ;
571
572 iwl_conf->is_green_field = !!(ht_conf->cap & IEEE80211_HT_CAP_GRN_FLD);
573 iwl_conf->max_amsdu_size =
574 !!(ht_conf->cap & IEEE80211_HT_CAP_MAX_AMSDU);
575
576 iwl_conf->supported_chan_width =
577 !!(ht_conf->cap & IEEE80211_HT_CAP_SUP_WIDTH);
578 iwl_conf->extension_chan_offset =
579 ht_bss_conf->bss_cap & IEEE80211_HT_IE_CHA_SEC_OFFSET;
580 /* If no above or below channel supplied disable FAT channel */
581 if (iwl_conf->extension_chan_offset != IEEE80211_HT_IE_CHA_SEC_ABOVE &&
582 iwl_conf->extension_chan_offset != IEEE80211_HT_IE_CHA_SEC_BELOW) {
583 iwl_conf->extension_chan_offset = IEEE80211_HT_IE_CHA_SEC_NONE;
584 iwl_conf->supported_chan_width = 0;
585 }
586
587 iwl_conf->sm_ps = (u8)((ht_conf->cap & IEEE80211_HT_CAP_SM_PS) >> 2);
588
589 memcpy(iwl_conf->supp_mcs_set, ht_conf->supp_mcs_set, 16);
590
591 iwl_conf->control_channel = ht_bss_conf->primary_channel;
592 iwl_conf->tx_chan_width =
593 !!(ht_bss_conf->bss_cap & IEEE80211_HT_IE_CHA_WIDTH);
594 iwl_conf->ht_protection =
595 ht_bss_conf->bss_op_mode & IEEE80211_HT_IE_HT_PROTECTION;
596 iwl_conf->non_GF_STA_present =
597 !!(ht_bss_conf->bss_op_mode & IEEE80211_HT_IE_NON_GF_STA_PRSNT);
598
599 IWL_DEBUG_MAC80211("control channel %d\n", iwl_conf->control_channel);
600 IWL_DEBUG_MAC80211("leave\n");
601 }
602
603 /*
604 * QoS support
605 */
606 static void iwl_activate_qos(struct iwl_priv *priv, u8 force)
607 {
608 if (test_bit(STATUS_EXIT_PENDING, &priv->status))
609 return;
610
611 if (!priv->qos_data.qos_enable)
612 return;
613
614 priv->qos_data.def_qos_parm.qos_flags = 0;
615
616 if (priv->qos_data.qos_cap.q_AP.queue_request &&
617 !priv->qos_data.qos_cap.q_AP.txop_request)
618 priv->qos_data.def_qos_parm.qos_flags |=
619 QOS_PARAM_FLG_TXOP_TYPE_MSK;
620 if (priv->qos_data.qos_active)
621 priv->qos_data.def_qos_parm.qos_flags |=
622 QOS_PARAM_FLG_UPDATE_EDCA_MSK;
623
624 if (priv->current_ht_config.is_ht)
625 priv->qos_data.def_qos_parm.qos_flags |= QOS_PARAM_FLG_TGN_MSK;
626
627 if (force || iwl_is_associated(priv)) {
628 IWL_DEBUG_QOS("send QoS cmd with Qos active=%d FLAGS=0x%X\n",
629 priv->qos_data.qos_active,
630 priv->qos_data.def_qos_parm.qos_flags);
631
632 iwl_send_cmd_pdu_async(priv, REPLY_QOS_PARAM,
633 sizeof(struct iwl_qosparam_cmd),
634 &priv->qos_data.def_qos_parm, NULL);
635 }
636 }
637
638 #define MAX_UCODE_BEACON_INTERVAL 4096
639
640 static __le16 iwl4965_adjust_beacon_interval(u16 beacon_val)
641 {
642 u16 new_val = 0;
643 u16 beacon_factor = 0;
644
645 beacon_factor =
646 (beacon_val + MAX_UCODE_BEACON_INTERVAL)
647 / MAX_UCODE_BEACON_INTERVAL;
648 new_val = beacon_val / beacon_factor;
649
650 return cpu_to_le16(new_val);
651 }
652
653 static void iwl4965_setup_rxon_timing(struct iwl_priv *priv)
654 {
655 u64 interval_tm_unit;
656 u64 tsf, result;
657 unsigned long flags;
658 struct ieee80211_conf *conf = NULL;
659 u16 beacon_int = 0;
660
661 conf = ieee80211_get_hw_conf(priv->hw);
662
663 spin_lock_irqsave(&priv->lock, flags);
664 priv->rxon_timing.timestamp.dw[1] = cpu_to_le32(priv->timestamp >> 32);
665 priv->rxon_timing.timestamp.dw[0] =
666 cpu_to_le32(priv->timestamp & 0xFFFFFFFF);
667
668 priv->rxon_timing.listen_interval = cpu_to_le16(conf->listen_interval);
669
670 tsf = priv->timestamp;
671
672 beacon_int = priv->beacon_int;
673 spin_unlock_irqrestore(&priv->lock, flags);
674
675 if (priv->iw_mode == NL80211_IFTYPE_STATION) {
676 if (beacon_int == 0) {
677 priv->rxon_timing.beacon_interval = cpu_to_le16(100);
678 priv->rxon_timing.beacon_init_val = cpu_to_le32(102400);
679 } else {
680 priv->rxon_timing.beacon_interval =
681 cpu_to_le16(beacon_int);
682 priv->rxon_timing.beacon_interval =
683 iwl4965_adjust_beacon_interval(
684 le16_to_cpu(priv->rxon_timing.beacon_interval));
685 }
686
687 priv->rxon_timing.atim_window = 0;
688 } else {
689 priv->rxon_timing.beacon_interval =
690 iwl4965_adjust_beacon_interval(conf->beacon_int);
691 /* TODO: we need to get atim_window from upper stack
692 * for now we set to 0 */
693 priv->rxon_timing.atim_window = 0;
694 }
695
696 interval_tm_unit =
697 (le16_to_cpu(priv->rxon_timing.beacon_interval) * 1024);
698 result = do_div(tsf, interval_tm_unit);
699 priv->rxon_timing.beacon_init_val =
700 cpu_to_le32((u32) ((u64) interval_tm_unit - result));
701
702 IWL_DEBUG_ASSOC
703 ("beacon interval %d beacon timer %d beacon tim %d\n",
704 le16_to_cpu(priv->rxon_timing.beacon_interval),
705 le32_to_cpu(priv->rxon_timing.beacon_init_val),
706 le16_to_cpu(priv->rxon_timing.atim_window));
707 }
708
709 static void iwl_set_flags_for_band(struct iwl_priv *priv,
710 enum ieee80211_band band)
711 {
712 if (band == IEEE80211_BAND_5GHZ) {
713 priv->staging_rxon.flags &=
714 ~(RXON_FLG_BAND_24G_MSK | RXON_FLG_AUTO_DETECT_MSK
715 | RXON_FLG_CCK_MSK);
716 priv->staging_rxon.flags |= RXON_FLG_SHORT_SLOT_MSK;
717 } else {
718 /* Copied from iwl4965_post_associate() */
719 if (priv->assoc_capability & WLAN_CAPABILITY_SHORT_SLOT_TIME)
720 priv->staging_rxon.flags |= RXON_FLG_SHORT_SLOT_MSK;
721 else
722 priv->staging_rxon.flags &= ~RXON_FLG_SHORT_SLOT_MSK;
723
724 if (priv->iw_mode == NL80211_IFTYPE_ADHOC)
725 priv->staging_rxon.flags &= ~RXON_FLG_SHORT_SLOT_MSK;
726
727 priv->staging_rxon.flags |= RXON_FLG_BAND_24G_MSK;
728 priv->staging_rxon.flags |= RXON_FLG_AUTO_DETECT_MSK;
729 priv->staging_rxon.flags &= ~RXON_FLG_CCK_MSK;
730 }
731 }
732
733 /*
734 * initialize rxon structure with default values from eeprom
735 */
736 static void iwl4965_connection_init_rx_config(struct iwl_priv *priv)
737 {
738 const struct iwl_channel_info *ch_info;
739
740 memset(&priv->staging_rxon, 0, sizeof(priv->staging_rxon));
741
742 switch (priv->iw_mode) {
743 case NL80211_IFTYPE_AP:
744 priv->staging_rxon.dev_type = RXON_DEV_TYPE_AP;
745 break;
746
747 case NL80211_IFTYPE_STATION:
748 priv->staging_rxon.dev_type = RXON_DEV_TYPE_ESS;
749 priv->staging_rxon.filter_flags = RXON_FILTER_ACCEPT_GRP_MSK;
750 break;
751
752 case NL80211_IFTYPE_ADHOC:
753 priv->staging_rxon.dev_type = RXON_DEV_TYPE_IBSS;
754 priv->staging_rxon.flags = RXON_FLG_SHORT_PREAMBLE_MSK;
755 priv->staging_rxon.filter_flags = RXON_FILTER_BCON_AWARE_MSK |
756 RXON_FILTER_ACCEPT_GRP_MSK;
757 break;
758
759 case NL80211_IFTYPE_MONITOR:
760 priv->staging_rxon.dev_type = RXON_DEV_TYPE_SNIFFER;
761 priv->staging_rxon.filter_flags = RXON_FILTER_PROMISC_MSK |
762 RXON_FILTER_CTL2HOST_MSK | RXON_FILTER_ACCEPT_GRP_MSK;
763 break;
764 default:
765 IWL_ERROR("Unsupported interface type %d\n", priv->iw_mode);
766 break;
767 }
768
769 #if 0
770 /* TODO: Figure out when short_preamble would be set and cache from
771 * that */
772 if (!hw_to_local(priv->hw)->short_preamble)
773 priv->staging_rxon.flags &= ~RXON_FLG_SHORT_PREAMBLE_MSK;
774 else
775 priv->staging_rxon.flags |= RXON_FLG_SHORT_PREAMBLE_MSK;
776 #endif
777
778 ch_info = iwl_get_channel_info(priv, priv->band,
779 le16_to_cpu(priv->active_rxon.channel));
780
781 if (!ch_info)
782 ch_info = &priv->channel_info[0];
783
784 /*
785 * in some case A channels are all non IBSS
786 * in this case force B/G channel
787 */
788 if ((priv->iw_mode == NL80211_IFTYPE_ADHOC) &&
789 !(is_channel_ibss(ch_info)))
790 ch_info = &priv->channel_info[0];
791
792 priv->staging_rxon.channel = cpu_to_le16(ch_info->channel);
793 priv->band = ch_info->band;
794
795 iwl_set_flags_for_band(priv, priv->band);
796
797 priv->staging_rxon.ofdm_basic_rates =
798 (IWL_OFDM_RATES_MASK >> IWL_FIRST_OFDM_RATE) & 0xFF;
799 priv->staging_rxon.cck_basic_rates =
800 (IWL_CCK_RATES_MASK >> IWL_FIRST_CCK_RATE) & 0xF;
801
802 priv->staging_rxon.flags &= ~(RXON_FLG_CHANNEL_MODE_MIXED_MSK |
803 RXON_FLG_CHANNEL_MODE_PURE_40_MSK);
804 memcpy(priv->staging_rxon.node_addr, priv->mac_addr, ETH_ALEN);
805 memcpy(priv->staging_rxon.wlap_bssid_addr, priv->mac_addr, ETH_ALEN);
806 priv->staging_rxon.ofdm_ht_single_stream_basic_rates = 0xff;
807 priv->staging_rxon.ofdm_ht_dual_stream_basic_rates = 0xff;
808 iwl_set_rxon_chain(priv);
809 }
810
811 static int iwl4965_set_mode(struct iwl_priv *priv, int mode)
812 {
813 priv->iw_mode = mode;
814
815 iwl4965_connection_init_rx_config(priv);
816 memcpy(priv->staging_rxon.node_addr, priv->mac_addr, ETH_ALEN);
817
818 iwl_clear_stations_table(priv);
819
820 /* dont commit rxon if rf-kill is on*/
821 if (!iwl_is_ready_rf(priv))
822 return -EAGAIN;
823
824 cancel_delayed_work(&priv->scan_check);
825 if (iwl_scan_cancel_timeout(priv, 100)) {
826 IWL_WARNING("Aborted scan still in progress after 100ms\n");
827 IWL_DEBUG_MAC80211("leaving - scan abort failed.\n");
828 return -EAGAIN;
829 }
830
831 iwl4965_commit_rxon(priv);
832
833 return 0;
834 }
835
836 static void iwl4965_set_rate(struct iwl_priv *priv)
837 {
838 const struct ieee80211_supported_band *hw = NULL;
839 struct ieee80211_rate *rate;
840 int i;
841
842 hw = iwl_get_hw_mode(priv, priv->band);
843 if (!hw) {
844 IWL_ERROR("Failed to set rate: unable to get hw mode\n");
845 return;
846 }
847
848 priv->active_rate = 0;
849 priv->active_rate_basic = 0;
850
851 for (i = 0; i < hw->n_bitrates; i++) {
852 rate = &(hw->bitrates[i]);
853 if (rate->hw_value < IWL_RATE_COUNT)
854 priv->active_rate |= (1 << rate->hw_value);
855 }
856
857 IWL_DEBUG_RATE("Set active_rate = %0x, active_rate_basic = %0x\n",
858 priv->active_rate, priv->active_rate_basic);
859
860 /*
861 * If a basic rate is configured, then use it (adding IWL_RATE_1M_MASK)
862 * otherwise set it to the default of all CCK rates and 6, 12, 24 for
863 * OFDM
864 */
865 if (priv->active_rate_basic & IWL_CCK_BASIC_RATES_MASK)
866 priv->staging_rxon.cck_basic_rates =
867 ((priv->active_rate_basic &
868 IWL_CCK_RATES_MASK) >> IWL_FIRST_CCK_RATE) & 0xF;
869 else
870 priv->staging_rxon.cck_basic_rates =
871 (IWL_CCK_BASIC_RATES_MASK >> IWL_FIRST_CCK_RATE) & 0xF;
872
873 if (priv->active_rate_basic & IWL_OFDM_BASIC_RATES_MASK)
874 priv->staging_rxon.ofdm_basic_rates =
875 ((priv->active_rate_basic &
876 (IWL_OFDM_BASIC_RATES_MASK | IWL_RATE_6M_MASK)) >>
877 IWL_FIRST_OFDM_RATE) & 0xFF;
878 else
879 priv->staging_rxon.ofdm_basic_rates =
880 (IWL_OFDM_BASIC_RATES_MASK >> IWL_FIRST_OFDM_RATE) & 0xFF;
881 }
882
883 #ifdef CONFIG_IWLAGN_SPECTRUM_MEASUREMENT
884
885 #include "iwl-spectrum.h"
886
887 #define BEACON_TIME_MASK_LOW 0x00FFFFFF
888 #define BEACON_TIME_MASK_HIGH 0xFF000000
889 #define TIME_UNIT 1024
890
891 /*
892 * extended beacon time format
893 * time in usec will be changed into a 32-bit value in 8:24 format
894 * the high 1 byte is the beacon counts
895 * the lower 3 bytes is the time in usec within one beacon interval
896 */
897
898 static u32 iwl4965_usecs_to_beacons(u32 usec, u32 beacon_interval)
899 {
900 u32 quot;
901 u32 rem;
902 u32 interval = beacon_interval * 1024;
903
904 if (!interval || !usec)
905 return 0;
906
907 quot = (usec / interval) & (BEACON_TIME_MASK_HIGH >> 24);
908 rem = (usec % interval) & BEACON_TIME_MASK_LOW;
909
910 return (quot << 24) + rem;
911 }
912
913 /* base is usually what we get from ucode with each received frame,
914 * the same as HW timer counter counting down
915 */
916
917 static __le32 iwl4965_add_beacon_time(u32 base, u32 addon, u32 beacon_interval)
918 {
919 u32 base_low = base & BEACON_TIME_MASK_LOW;
920 u32 addon_low = addon & BEACON_TIME_MASK_LOW;
921 u32 interval = beacon_interval * TIME_UNIT;
922 u32 res = (base & BEACON_TIME_MASK_HIGH) +
923 (addon & BEACON_TIME_MASK_HIGH);
924
925 if (base_low > addon_low)
926 res += base_low - addon_low;
927 else if (base_low < addon_low) {
928 res += interval + base_low - addon_low;
929 res += (1 << 24);
930 } else
931 res += (1 << 24);
932
933 return cpu_to_le32(res);
934 }
935
936 static int iwl4965_get_measurement(struct iwl_priv *priv,
937 struct ieee80211_measurement_params *params,
938 u8 type)
939 {
940 struct iwl4965_spectrum_cmd spectrum;
941 struct iwl_rx_packet *res;
942 struct iwl_host_cmd cmd = {
943 .id = REPLY_SPECTRUM_MEASUREMENT_CMD,
944 .data = (void *)&spectrum,
945 .meta.flags = CMD_WANT_SKB,
946 };
947 u32 add_time = le64_to_cpu(params->start_time);
948 int rc;
949 int spectrum_resp_status;
950 int duration = le16_to_cpu(params->duration);
951
952 if (iwl_is_associated(priv))
953 add_time =
954 iwl4965_usecs_to_beacons(
955 le64_to_cpu(params->start_time) - priv->last_tsf,
956 le16_to_cpu(priv->rxon_timing.beacon_interval));
957
958 memset(&spectrum, 0, sizeof(spectrum));
959
960 spectrum.channel_count = cpu_to_le16(1);
961 spectrum.flags =
962 RXON_FLG_TSF2HOST_MSK | RXON_FLG_ANT_A_MSK | RXON_FLG_DIS_DIV_MSK;
963 spectrum.filter_flags = MEASUREMENT_FILTER_FLAG;
964 cmd.len = sizeof(spectrum);
965 spectrum.len = cpu_to_le16(cmd.len - sizeof(spectrum.len));
966
967 if (iwl_is_associated(priv))
968 spectrum.start_time =
969 iwl4965_add_beacon_time(priv->last_beacon_time,
970 add_time,
971 le16_to_cpu(priv->rxon_timing.beacon_interval));
972 else
973 spectrum.start_time = 0;
974
975 spectrum.channels[0].duration = cpu_to_le32(duration * TIME_UNIT);
976 spectrum.channels[0].channel = params->channel;
977 spectrum.channels[0].type = type;
978 if (priv->active_rxon.flags & RXON_FLG_BAND_24G_MSK)
979 spectrum.flags |= RXON_FLG_BAND_24G_MSK |
980 RXON_FLG_AUTO_DETECT_MSK | RXON_FLG_TGG_PROTECT_MSK;
981
982 rc = iwl_send_cmd_sync(priv, &cmd);
983 if (rc)
984 return rc;
985
986 res = (struct iwl_rx_packet *)cmd.meta.u.skb->data;
987 if (res->hdr.flags & IWL_CMD_FAILED_MSK) {
988 IWL_ERROR("Bad return from REPLY_RX_ON_ASSOC command\n");
989 rc = -EIO;
990 }
991
992 spectrum_resp_status = le16_to_cpu(res->u.spectrum.status);
993 switch (spectrum_resp_status) {
994 case 0: /* Command will be handled */
995 if (res->u.spectrum.id != 0xff) {
996 IWL_DEBUG_INFO
997 ("Replaced existing measurement: %d\n",
998 res->u.spectrum.id);
999 priv->measurement_status &= ~MEASUREMENT_READY;
1000 }
1001 priv->measurement_status |= MEASUREMENT_ACTIVE;
1002 rc = 0;
1003 break;
1004
1005 case 1: /* Command will not be handled */
1006 rc = -EAGAIN;
1007 break;
1008 }
1009
1010 dev_kfree_skb_any(cmd.meta.u.skb);
1011
1012 return rc;
1013 }
1014 #endif
1015
1016 /******************************************************************************
1017 *
1018 * Generic RX handler implementations
1019 *
1020 ******************************************************************************/
1021 static void iwl_rx_reply_alive(struct iwl_priv *priv,
1022 struct iwl_rx_mem_buffer *rxb)
1023 {
1024 struct iwl_rx_packet *pkt = (struct iwl_rx_packet *)rxb->skb->data;
1025 struct iwl_alive_resp *palive;
1026 struct delayed_work *pwork;
1027
1028 palive = &pkt->u.alive_frame;
1029
1030 IWL_DEBUG_INFO("Alive ucode status 0x%08X revision "
1031 "0x%01X 0x%01X\n",
1032 palive->is_valid, palive->ver_type,
1033 palive->ver_subtype);
1034
1035 if (palive->ver_subtype == INITIALIZE_SUBTYPE) {
1036 IWL_DEBUG_INFO("Initialization Alive received.\n");
1037 memcpy(&priv->card_alive_init,
1038 &pkt->u.alive_frame,
1039 sizeof(struct iwl_init_alive_resp));
1040 pwork = &priv->init_alive_start;
1041 } else {
1042 IWL_DEBUG_INFO("Runtime Alive received.\n");
1043 memcpy(&priv->card_alive, &pkt->u.alive_frame,
1044 sizeof(struct iwl_alive_resp));
1045 pwork = &priv->alive_start;
1046 }
1047
1048 /* We delay the ALIVE response by 5ms to
1049 * give the HW RF Kill time to activate... */
1050 if (palive->is_valid == UCODE_VALID_OK)
1051 queue_delayed_work(priv->workqueue, pwork,
1052 msecs_to_jiffies(5));
1053 else
1054 IWL_WARNING("uCode did not respond OK.\n");
1055 }
1056
1057 static void iwl4965_rx_reply_error(struct iwl_priv *priv,
1058 struct iwl_rx_mem_buffer *rxb)
1059 {
1060 struct iwl_rx_packet *pkt = (struct iwl_rx_packet *)rxb->skb->data;
1061
1062 IWL_ERROR("Error Reply type 0x%08X cmd %s (0x%02X) "
1063 "seq 0x%04X ser 0x%08X\n",
1064 le32_to_cpu(pkt->u.err_resp.error_type),
1065 get_cmd_string(pkt->u.err_resp.cmd_id),
1066 pkt->u.err_resp.cmd_id,
1067 le16_to_cpu(pkt->u.err_resp.bad_cmd_seq_num),
1068 le32_to_cpu(pkt->u.err_resp.error_info));
1069 }
1070
1071 #define TX_STATUS_ENTRY(x) case TX_STATUS_FAIL_ ## x: return #x
1072
1073 static void iwl4965_rx_csa(struct iwl_priv *priv, struct iwl_rx_mem_buffer *rxb)
1074 {
1075 struct iwl_rx_packet *pkt = (struct iwl_rx_packet *)rxb->skb->data;
1076 struct iwl_rxon_cmd *rxon = (void *)&priv->active_rxon;
1077 struct iwl4965_csa_notification *csa = &(pkt->u.csa_notif);
1078 IWL_DEBUG_11H("CSA notif: channel %d, status %d\n",
1079 le16_to_cpu(csa->channel), le32_to_cpu(csa->status));
1080 rxon->channel = csa->channel;
1081 priv->staging_rxon.channel = csa->channel;
1082 }
1083
1084 static void iwl4965_rx_spectrum_measure_notif(struct iwl_priv *priv,
1085 struct iwl_rx_mem_buffer *rxb)
1086 {
1087 #ifdef CONFIG_IWLAGN_SPECTRUM_MEASUREMENT
1088 struct iwl_rx_packet *pkt = (struct iwl_rx_packet *)rxb->skb->data;
1089 struct iwl4965_spectrum_notification *report = &(pkt->u.spectrum_notif);
1090
1091 if (!report->state) {
1092 IWL_DEBUG(IWL_DL_11H,
1093 "Spectrum Measure Notification: Start\n");
1094 return;
1095 }
1096
1097 memcpy(&priv->measure_report, report, sizeof(*report));
1098 priv->measurement_status |= MEASUREMENT_READY;
1099 #endif
1100 }
1101
1102 static void iwl4965_rx_pm_sleep_notif(struct iwl_priv *priv,
1103 struct iwl_rx_mem_buffer *rxb)
1104 {
1105 #ifdef CONFIG_IWLWIFI_DEBUG
1106 struct iwl_rx_packet *pkt = (struct iwl_rx_packet *)rxb->skb->data;
1107 struct iwl4965_sleep_notification *sleep = &(pkt->u.sleep_notif);
1108 IWL_DEBUG_RX("sleep mode: %d, src: %d\n",
1109 sleep->pm_sleep_mode, sleep->pm_wakeup_src);
1110 #endif
1111 }
1112
1113 static void iwl4965_rx_pm_debug_statistics_notif(struct iwl_priv *priv,
1114 struct iwl_rx_mem_buffer *rxb)
1115 {
1116 struct iwl_rx_packet *pkt = (struct iwl_rx_packet *)rxb->skb->data;
1117 IWL_DEBUG_RADIO("Dumping %d bytes of unhandled "
1118 "notification for %s:\n",
1119 le32_to_cpu(pkt->len), get_cmd_string(pkt->hdr.cmd));
1120 iwl_print_hex_dump(priv, IWL_DL_RADIO, pkt->u.raw, le32_to_cpu(pkt->len));
1121 }
1122
1123 static void iwl4965_bg_beacon_update(struct work_struct *work)
1124 {
1125 struct iwl_priv *priv =
1126 container_of(work, struct iwl_priv, beacon_update);
1127 struct sk_buff *beacon;
1128
1129 /* Pull updated AP beacon from mac80211. will fail if not in AP mode */
1130 beacon = ieee80211_beacon_get(priv->hw, priv->vif);
1131
1132 if (!beacon) {
1133 IWL_ERROR("update beacon failed\n");
1134 return;
1135 }
1136
1137 mutex_lock(&priv->mutex);
1138 /* new beacon skb is allocated every time; dispose previous.*/
1139 if (priv->ibss_beacon)
1140 dev_kfree_skb(priv->ibss_beacon);
1141
1142 priv->ibss_beacon = beacon;
1143 mutex_unlock(&priv->mutex);
1144
1145 iwl4965_send_beacon_cmd(priv);
1146 }
1147
1148 /**
1149 * iwl4965_bg_statistics_periodic - Timer callback to queue statistics
1150 *
1151 * This callback is provided in order to send a statistics request.
1152 *
1153 * This timer function is continually reset to execute within
1154 * REG_RECALIB_PERIOD seconds since the last STATISTICS_NOTIFICATION
1155 * was received. We need to ensure we receive the statistics in order
1156 * to update the temperature used for calibrating the TXPOWER.
1157 */
1158 static void iwl4965_bg_statistics_periodic(unsigned long data)
1159 {
1160 struct iwl_priv *priv = (struct iwl_priv *)data;
1161
1162 if (test_bit(STATUS_EXIT_PENDING, &priv->status))
1163 return;
1164
1165 iwl_send_statistics_request(priv, CMD_ASYNC);
1166 }
1167
1168 static void iwl4965_rx_beacon_notif(struct iwl_priv *priv,
1169 struct iwl_rx_mem_buffer *rxb)
1170 {
1171 #ifdef CONFIG_IWLWIFI_DEBUG
1172 struct iwl_rx_packet *pkt = (struct iwl_rx_packet *)rxb->skb->data;
1173 struct iwl4965_beacon_notif *beacon = &(pkt->u.beacon_status);
1174 u8 rate = iwl_hw_get_rate(beacon->beacon_notify_hdr.rate_n_flags);
1175
1176 IWL_DEBUG_RX("beacon status %x retries %d iss %d "
1177 "tsf %d %d rate %d\n",
1178 le32_to_cpu(beacon->beacon_notify_hdr.u.status) & TX_STATUS_MSK,
1179 beacon->beacon_notify_hdr.failure_frame,
1180 le32_to_cpu(beacon->ibss_mgr_status),
1181 le32_to_cpu(beacon->high_tsf),
1182 le32_to_cpu(beacon->low_tsf), rate);
1183 #endif
1184
1185 if ((priv->iw_mode == NL80211_IFTYPE_AP) &&
1186 (!test_bit(STATUS_EXIT_PENDING, &priv->status)))
1187 queue_work(priv->workqueue, &priv->beacon_update);
1188 }
1189
1190 /* Handle notification from uCode that card's power state is changing
1191 * due to software, hardware, or critical temperature RFKILL */
1192 static void iwl4965_rx_card_state_notif(struct iwl_priv *priv,
1193 struct iwl_rx_mem_buffer *rxb)
1194 {
1195 struct iwl_rx_packet *pkt = (struct iwl_rx_packet *)rxb->skb->data;
1196 u32 flags = le32_to_cpu(pkt->u.card_state_notif.flags);
1197 unsigned long status = priv->status;
1198
1199 IWL_DEBUG_RF_KILL("Card state received: HW:%s SW:%s\n",
1200 (flags & HW_CARD_DISABLED) ? "Kill" : "On",
1201 (flags & SW_CARD_DISABLED) ? "Kill" : "On");
1202
1203 if (flags & (SW_CARD_DISABLED | HW_CARD_DISABLED |
1204 RF_CARD_DISABLED)) {
1205
1206 iwl_write32(priv, CSR_UCODE_DRV_GP1_SET,
1207 CSR_UCODE_DRV_GP1_BIT_CMD_BLOCKED);
1208
1209 if (!iwl_grab_nic_access(priv)) {
1210 iwl_write_direct32(
1211 priv, HBUS_TARG_MBX_C,
1212 HBUS_TARG_MBX_C_REG_BIT_CMD_BLOCKED);
1213
1214 iwl_release_nic_access(priv);
1215 }
1216
1217 if (!(flags & RXON_CARD_DISABLED)) {
1218 iwl_write32(priv, CSR_UCODE_DRV_GP1_CLR,
1219 CSR_UCODE_DRV_GP1_BIT_CMD_BLOCKED);
1220 if (!iwl_grab_nic_access(priv)) {
1221 iwl_write_direct32(
1222 priv, HBUS_TARG_MBX_C,
1223 HBUS_TARG_MBX_C_REG_BIT_CMD_BLOCKED);
1224
1225 iwl_release_nic_access(priv);
1226 }
1227 }
1228
1229 if (flags & RF_CARD_DISABLED) {
1230 iwl_write32(priv, CSR_UCODE_DRV_GP1_SET,
1231 CSR_UCODE_DRV_GP1_REG_BIT_CT_KILL_EXIT);
1232 iwl_read32(priv, CSR_UCODE_DRV_GP1);
1233 if (!iwl_grab_nic_access(priv))
1234 iwl_release_nic_access(priv);
1235 }
1236 }
1237
1238 if (flags & HW_CARD_DISABLED)
1239 set_bit(STATUS_RF_KILL_HW, &priv->status);
1240 else
1241 clear_bit(STATUS_RF_KILL_HW, &priv->status);
1242
1243
1244 if (flags & SW_CARD_DISABLED)
1245 set_bit(STATUS_RF_KILL_SW, &priv->status);
1246 else
1247 clear_bit(STATUS_RF_KILL_SW, &priv->status);
1248
1249 if (!(flags & RXON_CARD_DISABLED))
1250 iwl_scan_cancel(priv);
1251
1252 if ((test_bit(STATUS_RF_KILL_HW, &status) !=
1253 test_bit(STATUS_RF_KILL_HW, &priv->status)) ||
1254 (test_bit(STATUS_RF_KILL_SW, &status) !=
1255 test_bit(STATUS_RF_KILL_SW, &priv->status)))
1256 queue_work(priv->workqueue, &priv->rf_kill);
1257 else
1258 wake_up_interruptible(&priv->wait_command_queue);
1259 }
1260
1261 int iwl4965_set_pwr_src(struct iwl_priv *priv, enum iwl_pwr_src src)
1262 {
1263 int ret;
1264 unsigned long flags;
1265
1266 spin_lock_irqsave(&priv->lock, flags);
1267 ret = iwl_grab_nic_access(priv);
1268 if (ret)
1269 goto err;
1270
1271 if (src == IWL_PWR_SRC_VAUX) {
1272 u32 val;
1273 ret = pci_read_config_dword(priv->pci_dev, PCI_CFG_POWER_SOURCE,
1274 &val);
1275
1276 if (val & PCI_CFG_PMC_PME_FROM_D3COLD_SUPPORT)
1277 iwl_set_bits_mask_prph(priv, APMG_PS_CTRL_REG,
1278 APMG_PS_CTRL_VAL_PWR_SRC_VAUX,
1279 ~APMG_PS_CTRL_MSK_PWR_SRC);
1280 } else {
1281 iwl_set_bits_mask_prph(priv, APMG_PS_CTRL_REG,
1282 APMG_PS_CTRL_VAL_PWR_SRC_VMAIN,
1283 ~APMG_PS_CTRL_MSK_PWR_SRC);
1284 }
1285
1286 iwl_release_nic_access(priv);
1287 err:
1288 spin_unlock_irqrestore(&priv->lock, flags);
1289 return ret;
1290 }
1291
1292 /**
1293 * iwl4965_setup_rx_handlers - Initialize Rx handler callbacks
1294 *
1295 * Setup the RX handlers for each of the reply types sent from the uCode
1296 * to the host.
1297 *
1298 * This function chains into the hardware specific files for them to setup
1299 * any hardware specific handlers as well.
1300 */
1301 static void iwl_setup_rx_handlers(struct iwl_priv *priv)
1302 {
1303 priv->rx_handlers[REPLY_ALIVE] = iwl_rx_reply_alive;
1304 priv->rx_handlers[REPLY_ERROR] = iwl4965_rx_reply_error;
1305 priv->rx_handlers[CHANNEL_SWITCH_NOTIFICATION] = iwl4965_rx_csa;
1306 priv->rx_handlers[SPECTRUM_MEASURE_NOTIFICATION] =
1307 iwl4965_rx_spectrum_measure_notif;
1308 priv->rx_handlers[PM_SLEEP_NOTIFICATION] = iwl4965_rx_pm_sleep_notif;
1309 priv->rx_handlers[PM_DEBUG_STATISTIC_NOTIFIC] =
1310 iwl4965_rx_pm_debug_statistics_notif;
1311 priv->rx_handlers[BEACON_NOTIFICATION] = iwl4965_rx_beacon_notif;
1312
1313 /*
1314 * The same handler is used for both the REPLY to a discrete
1315 * statistics request from the host as well as for the periodic
1316 * statistics notifications (after received beacons) from the uCode.
1317 */
1318 priv->rx_handlers[REPLY_STATISTICS_CMD] = iwl_rx_statistics;
1319 priv->rx_handlers[STATISTICS_NOTIFICATION] = iwl_rx_statistics;
1320
1321 iwl_setup_rx_scan_handlers(priv);
1322
1323 /* status change handler */
1324 priv->rx_handlers[CARD_STATE_NOTIFICATION] = iwl4965_rx_card_state_notif;
1325
1326 priv->rx_handlers[MISSED_BEACONS_NOTIFICATION] =
1327 iwl_rx_missed_beacon_notif;
1328 /* Rx handlers */
1329 priv->rx_handlers[REPLY_RX_PHY_CMD] = iwl_rx_reply_rx_phy;
1330 priv->rx_handlers[REPLY_RX_MPDU_CMD] = iwl_rx_reply_rx;
1331 /* block ack */
1332 priv->rx_handlers[REPLY_COMPRESSED_BA] = iwl_rx_reply_compressed_ba;
1333 /* Set up hardware specific Rx handlers */
1334 priv->cfg->ops->lib->rx_handler_setup(priv);
1335 }
1336
1337 /*
1338 * this should be called while priv->lock is locked
1339 */
1340 static void __iwl_rx_replenish(struct iwl_priv *priv)
1341 {
1342 iwl_rx_allocate(priv);
1343 iwl_rx_queue_restock(priv);
1344 }
1345
1346
1347 /**
1348 * iwl_rx_handle - Main entry function for receiving responses from uCode
1349 *
1350 * Uses the priv->rx_handlers callback function array to invoke
1351 * the appropriate handlers, including command responses,
1352 * frame-received notifications, and other notifications.
1353 */
1354 void iwl_rx_handle(struct iwl_priv *priv)
1355 {
1356 struct iwl_rx_mem_buffer *rxb;
1357 struct iwl_rx_packet *pkt;
1358 struct iwl_rx_queue *rxq = &priv->rxq;
1359 u32 r, i;
1360 int reclaim;
1361 unsigned long flags;
1362 u8 fill_rx = 0;
1363 u32 count = 8;
1364
1365 /* uCode's read index (stored in shared DRAM) indicates the last Rx
1366 * buffer that the driver may process (last buffer filled by ucode). */
1367 r = priv->cfg->ops->lib->shared_mem_rx_idx(priv);
1368 i = rxq->read;
1369
1370 /* Rx interrupt, but nothing sent from uCode */
1371 if (i == r)
1372 IWL_DEBUG(IWL_DL_RX, "r = %d, i = %d\n", r, i);
1373
1374 if (iwl_rx_queue_space(rxq) > (RX_QUEUE_SIZE / 2))
1375 fill_rx = 1;
1376
1377 while (i != r) {
1378 rxb = rxq->queue[i];
1379
1380 /* If an RXB doesn't have a Rx queue slot associated with it,
1381 * then a bug has been introduced in the queue refilling
1382 * routines -- catch it here */
1383 BUG_ON(rxb == NULL);
1384
1385 rxq->queue[i] = NULL;
1386
1387 pci_dma_sync_single_for_cpu(priv->pci_dev, rxb->aligned_dma_addr,
1388 priv->hw_params.rx_buf_size,
1389 PCI_DMA_FROMDEVICE);
1390 pkt = (struct iwl_rx_packet *)rxb->skb->data;
1391
1392 /* Reclaim a command buffer only if this packet is a response
1393 * to a (driver-originated) command.
1394 * If the packet (e.g. Rx frame) originated from uCode,
1395 * there is no command buffer to reclaim.
1396 * Ucode should set SEQ_RX_FRAME bit if ucode-originated,
1397 * but apparently a few don't get set; catch them here. */
1398 reclaim = !(pkt->hdr.sequence & SEQ_RX_FRAME) &&
1399 (pkt->hdr.cmd != REPLY_RX_PHY_CMD) &&
1400 (pkt->hdr.cmd != REPLY_RX) &&
1401 (pkt->hdr.cmd != REPLY_COMPRESSED_BA) &&
1402 (pkt->hdr.cmd != STATISTICS_NOTIFICATION) &&
1403 (pkt->hdr.cmd != REPLY_TX);
1404
1405 /* Based on type of command response or notification,
1406 * handle those that need handling via function in
1407 * rx_handlers table. See iwl4965_setup_rx_handlers() */
1408 if (priv->rx_handlers[pkt->hdr.cmd]) {
1409 IWL_DEBUG(IWL_DL_RX, "r = %d, i = %d, %s, 0x%02x\n", r,
1410 i, get_cmd_string(pkt->hdr.cmd), pkt->hdr.cmd);
1411 priv->rx_handlers[pkt->hdr.cmd] (priv, rxb);
1412 } else {
1413 /* No handling needed */
1414 IWL_DEBUG(IWL_DL_RX,
1415 "r %d i %d No handler needed for %s, 0x%02x\n",
1416 r, i, get_cmd_string(pkt->hdr.cmd),
1417 pkt->hdr.cmd);
1418 }
1419
1420 if (reclaim) {
1421 /* Invoke any callbacks, transfer the skb to caller, and
1422 * fire off the (possibly) blocking iwl_send_cmd()
1423 * as we reclaim the driver command queue */
1424 if (rxb && rxb->skb)
1425 iwl_tx_cmd_complete(priv, rxb);
1426 else
1427 IWL_WARNING("Claim null rxb?\n");
1428 }
1429
1430 /* For now we just don't re-use anything. We can tweak this
1431 * later to try and re-use notification packets and SKBs that
1432 * fail to Rx correctly */
1433 if (rxb->skb != NULL) {
1434 priv->alloc_rxb_skb--;
1435 dev_kfree_skb_any(rxb->skb);
1436 rxb->skb = NULL;
1437 }
1438
1439 pci_unmap_single(priv->pci_dev, rxb->real_dma_addr,
1440 priv->hw_params.rx_buf_size + 256,
1441 PCI_DMA_FROMDEVICE);
1442 spin_lock_irqsave(&rxq->lock, flags);
1443 list_add_tail(&rxb->list, &priv->rxq.rx_used);
1444 spin_unlock_irqrestore(&rxq->lock, flags);
1445 i = (i + 1) & RX_QUEUE_MASK;
1446 /* If there are a lot of unused frames,
1447 * restock the Rx queue so ucode wont assert. */
1448 if (fill_rx) {
1449 count++;
1450 if (count >= 8) {
1451 priv->rxq.read = i;
1452 __iwl_rx_replenish(priv);
1453 count = 0;
1454 }
1455 }
1456 }
1457
1458 /* Backtrack one entry */
1459 priv->rxq.read = i;
1460 iwl_rx_queue_restock(priv);
1461 }
1462
1463 #ifdef CONFIG_IWLWIFI_DEBUG
1464 static void iwl4965_print_rx_config_cmd(struct iwl_priv *priv)
1465 {
1466 struct iwl_rxon_cmd *rxon = &priv->staging_rxon;
1467 DECLARE_MAC_BUF(mac);
1468
1469 IWL_DEBUG_RADIO("RX CONFIG:\n");
1470 iwl_print_hex_dump(priv, IWL_DL_RADIO, (u8 *) rxon, sizeof(*rxon));
1471 IWL_DEBUG_RADIO("u16 channel: 0x%x\n", le16_to_cpu(rxon->channel));
1472 IWL_DEBUG_RADIO("u32 flags: 0x%08X\n", le32_to_cpu(rxon->flags));
1473 IWL_DEBUG_RADIO("u32 filter_flags: 0x%08x\n",
1474 le32_to_cpu(rxon->filter_flags));
1475 IWL_DEBUG_RADIO("u8 dev_type: 0x%x\n", rxon->dev_type);
1476 IWL_DEBUG_RADIO("u8 ofdm_basic_rates: 0x%02x\n",
1477 rxon->ofdm_basic_rates);
1478 IWL_DEBUG_RADIO("u8 cck_basic_rates: 0x%02x\n", rxon->cck_basic_rates);
1479 IWL_DEBUG_RADIO("u8[6] node_addr: %s\n",
1480 print_mac(mac, rxon->node_addr));
1481 IWL_DEBUG_RADIO("u8[6] bssid_addr: %s\n",
1482 print_mac(mac, rxon->bssid_addr));
1483 IWL_DEBUG_RADIO("u16 assoc_id: 0x%x\n", le16_to_cpu(rxon->assoc_id));
1484 }
1485 #endif
1486
1487 static void iwl4965_enable_interrupts(struct iwl_priv *priv)
1488 {
1489 IWL_DEBUG_ISR("Enabling interrupts\n");
1490 set_bit(STATUS_INT_ENABLED, &priv->status);
1491 iwl_write32(priv, CSR_INT_MASK, CSR_INI_SET_MASK);
1492 }
1493
1494 /* call this function to flush any scheduled tasklet */
1495 static inline void iwl_synchronize_irq(struct iwl_priv *priv)
1496 {
1497 /* wait to make sure we flush pedding tasklet*/
1498 synchronize_irq(priv->pci_dev->irq);
1499 tasklet_kill(&priv->irq_tasklet);
1500 }
1501
1502 static inline void iwl4965_disable_interrupts(struct iwl_priv *priv)
1503 {
1504 clear_bit(STATUS_INT_ENABLED, &priv->status);
1505
1506 /* disable interrupts from uCode/NIC to host */
1507 iwl_write32(priv, CSR_INT_MASK, 0x00000000);
1508
1509 /* acknowledge/clear/reset any interrupts still pending
1510 * from uCode or flow handler (Rx/Tx DMA) */
1511 iwl_write32(priv, CSR_INT, 0xffffffff);
1512 iwl_write32(priv, CSR_FH_INT_STATUS, 0xffffffff);
1513 IWL_DEBUG_ISR("Disabled interrupts\n");
1514 }
1515
1516
1517 /**
1518 * iwl4965_irq_handle_error - called for HW or SW error interrupt from card
1519 */
1520 static void iwl4965_irq_handle_error(struct iwl_priv *priv)
1521 {
1522 /* Set the FW error flag -- cleared on iwl4965_down */
1523 set_bit(STATUS_FW_ERROR, &priv->status);
1524
1525 /* Cancel currently queued command. */
1526 clear_bit(STATUS_HCMD_ACTIVE, &priv->status);
1527
1528 #ifdef CONFIG_IWLWIFI_DEBUG
1529 if (priv->debug_level & IWL_DL_FW_ERRORS) {
1530 iwl_dump_nic_error_log(priv);
1531 iwl_dump_nic_event_log(priv);
1532 iwl4965_print_rx_config_cmd(priv);
1533 }
1534 #endif
1535
1536 wake_up_interruptible(&priv->wait_command_queue);
1537
1538 /* Keep the restart process from trying to send host
1539 * commands by clearing the INIT status bit */
1540 clear_bit(STATUS_READY, &priv->status);
1541
1542 if (!test_bit(STATUS_EXIT_PENDING, &priv->status)) {
1543 IWL_DEBUG(IWL_DL_FW_ERRORS,
1544 "Restarting adapter due to uCode error.\n");
1545
1546 if (iwl_is_associated(priv)) {
1547 memcpy(&priv->recovery_rxon, &priv->active_rxon,
1548 sizeof(priv->recovery_rxon));
1549 priv->error_recovering = 1;
1550 }
1551 if (priv->cfg->mod_params->restart_fw)
1552 queue_work(priv->workqueue, &priv->restart);
1553 }
1554 }
1555
1556 static void iwl4965_error_recovery(struct iwl_priv *priv)
1557 {
1558 unsigned long flags;
1559
1560 memcpy(&priv->staging_rxon, &priv->recovery_rxon,
1561 sizeof(priv->staging_rxon));
1562 priv->staging_rxon.filter_flags &= ~RXON_FILTER_ASSOC_MSK;
1563 iwl4965_commit_rxon(priv);
1564
1565 iwl_rxon_add_station(priv, priv->bssid, 1);
1566
1567 spin_lock_irqsave(&priv->lock, flags);
1568 priv->assoc_id = le16_to_cpu(priv->staging_rxon.assoc_id);
1569 priv->error_recovering = 0;
1570 spin_unlock_irqrestore(&priv->lock, flags);
1571 }
1572
1573 static void iwl4965_irq_tasklet(struct iwl_priv *priv)
1574 {
1575 u32 inta, handled = 0;
1576 u32 inta_fh;
1577 unsigned long flags;
1578 #ifdef CONFIG_IWLWIFI_DEBUG
1579 u32 inta_mask;
1580 #endif
1581
1582 spin_lock_irqsave(&priv->lock, flags);
1583
1584 /* Ack/clear/reset pending uCode interrupts.
1585 * Note: Some bits in CSR_INT are "OR" of bits in CSR_FH_INT_STATUS,
1586 * and will clear only when CSR_FH_INT_STATUS gets cleared. */
1587 inta = iwl_read32(priv, CSR_INT);
1588 iwl_write32(priv, CSR_INT, inta);
1589
1590 /* Ack/clear/reset pending flow-handler (DMA) interrupts.
1591 * Any new interrupts that happen after this, either while we're
1592 * in this tasklet, or later, will show up in next ISR/tasklet. */
1593 inta_fh = iwl_read32(priv, CSR_FH_INT_STATUS);
1594 iwl_write32(priv, CSR_FH_INT_STATUS, inta_fh);
1595
1596 #ifdef CONFIG_IWLWIFI_DEBUG
1597 if (priv->debug_level & IWL_DL_ISR) {
1598 /* just for debug */
1599 inta_mask = iwl_read32(priv, CSR_INT_MASK);
1600 IWL_DEBUG_ISR("inta 0x%08x, enabled 0x%08x, fh 0x%08x\n",
1601 inta, inta_mask, inta_fh);
1602 }
1603 #endif
1604
1605 /* Since CSR_INT and CSR_FH_INT_STATUS reads and clears are not
1606 * atomic, make sure that inta covers all the interrupts that
1607 * we've discovered, even if FH interrupt came in just after
1608 * reading CSR_INT. */
1609 if (inta_fh & CSR49_FH_INT_RX_MASK)
1610 inta |= CSR_INT_BIT_FH_RX;
1611 if (inta_fh & CSR49_FH_INT_TX_MASK)
1612 inta |= CSR_INT_BIT_FH_TX;
1613
1614 /* Now service all interrupt bits discovered above. */
1615 if (inta & CSR_INT_BIT_HW_ERR) {
1616 IWL_ERROR("Microcode HW error detected. Restarting.\n");
1617
1618 /* Tell the device to stop sending interrupts */
1619 iwl4965_disable_interrupts(priv);
1620
1621 iwl4965_irq_handle_error(priv);
1622
1623 handled |= CSR_INT_BIT_HW_ERR;
1624
1625 spin_unlock_irqrestore(&priv->lock, flags);
1626
1627 return;
1628 }
1629
1630 #ifdef CONFIG_IWLWIFI_DEBUG
1631 if (priv->debug_level & (IWL_DL_ISR)) {
1632 /* NIC fires this, but we don't use it, redundant with WAKEUP */
1633 if (inta & CSR_INT_BIT_SCD)
1634 IWL_DEBUG_ISR("Scheduler finished to transmit "
1635 "the frame/frames.\n");
1636
1637 /* Alive notification via Rx interrupt will do the real work */
1638 if (inta & CSR_INT_BIT_ALIVE)
1639 IWL_DEBUG_ISR("Alive interrupt\n");
1640 }
1641 #endif
1642 /* Safely ignore these bits for debug checks below */
1643 inta &= ~(CSR_INT_BIT_SCD | CSR_INT_BIT_ALIVE);
1644
1645 /* HW RF KILL switch toggled */
1646 if (inta & CSR_INT_BIT_RF_KILL) {
1647 int hw_rf_kill = 0;
1648 if (!(iwl_read32(priv, CSR_GP_CNTRL) &
1649 CSR_GP_CNTRL_REG_FLAG_HW_RF_KILL_SW))
1650 hw_rf_kill = 1;
1651
1652 IWL_DEBUG(IWL_DL_RF_KILL, "RF_KILL bit toggled to %s.\n",
1653 hw_rf_kill ? "disable radio":"enable radio");
1654
1655 /* driver only loads ucode once setting the interface up.
1656 * the driver as well won't allow loading if RFKILL is set
1657 * therefore no need to restart the driver from this handler
1658 */
1659 if (!hw_rf_kill && !test_bit(STATUS_ALIVE, &priv->status))
1660 clear_bit(STATUS_RF_KILL_HW, &priv->status);
1661
1662 handled |= CSR_INT_BIT_RF_KILL;
1663 }
1664
1665 /* Chip got too hot and stopped itself */
1666 if (inta & CSR_INT_BIT_CT_KILL) {
1667 IWL_ERROR("Microcode CT kill error detected.\n");
1668 handled |= CSR_INT_BIT_CT_KILL;
1669 }
1670
1671 /* Error detected by uCode */
1672 if (inta & CSR_INT_BIT_SW_ERR) {
1673 IWL_ERROR("Microcode SW error detected. Restarting 0x%X.\n",
1674 inta);
1675 iwl4965_irq_handle_error(priv);
1676 handled |= CSR_INT_BIT_SW_ERR;
1677 }
1678
1679 /* uCode wakes up after power-down sleep */
1680 if (inta & CSR_INT_BIT_WAKEUP) {
1681 IWL_DEBUG_ISR("Wakeup interrupt\n");
1682 iwl_rx_queue_update_write_ptr(priv, &priv->rxq);
1683 iwl_txq_update_write_ptr(priv, &priv->txq[0]);
1684 iwl_txq_update_write_ptr(priv, &priv->txq[1]);
1685 iwl_txq_update_write_ptr(priv, &priv->txq[2]);
1686 iwl_txq_update_write_ptr(priv, &priv->txq[3]);
1687 iwl_txq_update_write_ptr(priv, &priv->txq[4]);
1688 iwl_txq_update_write_ptr(priv, &priv->txq[5]);
1689
1690 handled |= CSR_INT_BIT_WAKEUP;
1691 }
1692
1693 /* All uCode command responses, including Tx command responses,
1694 * Rx "responses" (frame-received notification), and other
1695 * notifications from uCode come through here*/
1696 if (inta & (CSR_INT_BIT_FH_RX | CSR_INT_BIT_SW_RX)) {
1697 iwl_rx_handle(priv);
1698 handled |= (CSR_INT_BIT_FH_RX | CSR_INT_BIT_SW_RX);
1699 }
1700
1701 if (inta & CSR_INT_BIT_FH_TX) {
1702 IWL_DEBUG_ISR("Tx interrupt\n");
1703 handled |= CSR_INT_BIT_FH_TX;
1704 /* FH finished to write, send event */
1705 priv->ucode_write_complete = 1;
1706 wake_up_interruptible(&priv->wait_command_queue);
1707 }
1708
1709 if (inta & ~handled)
1710 IWL_ERROR("Unhandled INTA bits 0x%08x\n", inta & ~handled);
1711
1712 if (inta & ~CSR_INI_SET_MASK) {
1713 IWL_WARNING("Disabled INTA bits 0x%08x were pending\n",
1714 inta & ~CSR_INI_SET_MASK);
1715 IWL_WARNING(" with FH_INT = 0x%08x\n", inta_fh);
1716 }
1717
1718 /* Re-enable all interrupts */
1719 /* only Re-enable if diabled by irq */
1720 if (test_bit(STATUS_INT_ENABLED, &priv->status))
1721 iwl4965_enable_interrupts(priv);
1722
1723 #ifdef CONFIG_IWLWIFI_DEBUG
1724 if (priv->debug_level & (IWL_DL_ISR)) {
1725 inta = iwl_read32(priv, CSR_INT);
1726 inta_mask = iwl_read32(priv, CSR_INT_MASK);
1727 inta_fh = iwl_read32(priv, CSR_FH_INT_STATUS);
1728 IWL_DEBUG_ISR("End inta 0x%08x, enabled 0x%08x, fh 0x%08x, "
1729 "flags 0x%08lx\n", inta, inta_mask, inta_fh, flags);
1730 }
1731 #endif
1732 spin_unlock_irqrestore(&priv->lock, flags);
1733 }
1734
1735 static irqreturn_t iwl4965_isr(int irq, void *data)
1736 {
1737 struct iwl_priv *priv = data;
1738 u32 inta, inta_mask;
1739 u32 inta_fh;
1740 if (!priv)
1741 return IRQ_NONE;
1742
1743 spin_lock(&priv->lock);
1744
1745 /* Disable (but don't clear!) interrupts here to avoid
1746 * back-to-back ISRs and sporadic interrupts from our NIC.
1747 * If we have something to service, the tasklet will re-enable ints.
1748 * If we *don't* have something, we'll re-enable before leaving here. */
1749 inta_mask = iwl_read32(priv, CSR_INT_MASK); /* just for debug */
1750 iwl_write32(priv, CSR_INT_MASK, 0x00000000);
1751
1752 /* Discover which interrupts are active/pending */
1753 inta = iwl_read32(priv, CSR_INT);
1754 inta_fh = iwl_read32(priv, CSR_FH_INT_STATUS);
1755
1756 /* Ignore interrupt if there's nothing in NIC to service.
1757 * This may be due to IRQ shared with another device,
1758 * or due to sporadic interrupts thrown from our NIC. */
1759 if (!inta && !inta_fh) {
1760 IWL_DEBUG_ISR("Ignore interrupt, inta == 0, inta_fh == 0\n");
1761 goto none;
1762 }
1763
1764 if ((inta == 0xFFFFFFFF) || ((inta & 0xFFFFFFF0) == 0xa5a5a5a0)) {
1765 /* Hardware disappeared. It might have already raised
1766 * an interrupt */
1767 IWL_WARNING("HARDWARE GONE?? INTA == 0x%080x\n", inta);
1768 goto unplugged;
1769 }
1770
1771 IWL_DEBUG_ISR("ISR inta 0x%08x, enabled 0x%08x, fh 0x%08x\n",
1772 inta, inta_mask, inta_fh);
1773
1774 inta &= ~CSR_INT_BIT_SCD;
1775
1776 /* iwl4965_irq_tasklet() will service interrupts and re-enable them */
1777 if (likely(inta || inta_fh))
1778 tasklet_schedule(&priv->irq_tasklet);
1779
1780 unplugged:
1781 spin_unlock(&priv->lock);
1782 return IRQ_HANDLED;
1783
1784 none:
1785 /* re-enable interrupts here since we don't have anything to service. */
1786 /* only Re-enable if diabled by irq */
1787 if (test_bit(STATUS_INT_ENABLED, &priv->status))
1788 iwl4965_enable_interrupts(priv);
1789 spin_unlock(&priv->lock);
1790 return IRQ_NONE;
1791 }
1792
1793 /******************************************************************************
1794 *
1795 * uCode download functions
1796 *
1797 ******************************************************************************/
1798
1799 static void iwl4965_dealloc_ucode_pci(struct iwl_priv *priv)
1800 {
1801 iwl_free_fw_desc(priv->pci_dev, &priv->ucode_code);
1802 iwl_free_fw_desc(priv->pci_dev, &priv->ucode_data);
1803 iwl_free_fw_desc(priv->pci_dev, &priv->ucode_data_backup);
1804 iwl_free_fw_desc(priv->pci_dev, &priv->ucode_init);
1805 iwl_free_fw_desc(priv->pci_dev, &priv->ucode_init_data);
1806 iwl_free_fw_desc(priv->pci_dev, &priv->ucode_boot);
1807 }
1808
1809 static void iwl4965_nic_start(struct iwl_priv *priv)
1810 {
1811 /* Remove all resets to allow NIC to operate */
1812 iwl_write32(priv, CSR_RESET, 0);
1813 }
1814
1815
1816 /**
1817 * iwl4965_read_ucode - Read uCode images from disk file.
1818 *
1819 * Copy into buffers for card to fetch via bus-mastering
1820 */
1821 static int iwl4965_read_ucode(struct iwl_priv *priv)
1822 {
1823 struct iwl_ucode *ucode;
1824 int ret;
1825 const struct firmware *ucode_raw;
1826 const char *name = priv->cfg->fw_name;
1827 u8 *src;
1828 size_t len;
1829 u32 ver, inst_size, data_size, init_size, init_data_size, boot_size;
1830
1831 /* Ask kernel firmware_class module to get the boot firmware off disk.
1832 * request_firmware() is synchronous, file is in memory on return. */
1833 ret = request_firmware(&ucode_raw, name, &priv->pci_dev->dev);
1834 if (ret < 0) {
1835 IWL_ERROR("%s firmware file req failed: Reason %d\n",
1836 name, ret);
1837 goto error;
1838 }
1839
1840 IWL_DEBUG_INFO("Got firmware '%s' file (%zd bytes) from disk\n",
1841 name, ucode_raw->size);
1842
1843 /* Make sure that we got at least our header! */
1844 if (ucode_raw->size < sizeof(*ucode)) {
1845 IWL_ERROR("File size way too small!\n");
1846 ret = -EINVAL;
1847 goto err_release;
1848 }
1849
1850 /* Data from ucode file: header followed by uCode images */
1851 ucode = (void *)ucode_raw->data;
1852
1853 ver = le32_to_cpu(ucode->ver);
1854 inst_size = le32_to_cpu(ucode->inst_size);
1855 data_size = le32_to_cpu(ucode->data_size);
1856 init_size = le32_to_cpu(ucode->init_size);
1857 init_data_size = le32_to_cpu(ucode->init_data_size);
1858 boot_size = le32_to_cpu(ucode->boot_size);
1859
1860 IWL_DEBUG_INFO("f/w package hdr ucode version = 0x%x\n", ver);
1861 IWL_DEBUG_INFO("f/w package hdr runtime inst size = %u\n",
1862 inst_size);
1863 IWL_DEBUG_INFO("f/w package hdr runtime data size = %u\n",
1864 data_size);
1865 IWL_DEBUG_INFO("f/w package hdr init inst size = %u\n",
1866 init_size);
1867 IWL_DEBUG_INFO("f/w package hdr init data size = %u\n",
1868 init_data_size);
1869 IWL_DEBUG_INFO("f/w package hdr boot inst size = %u\n",
1870 boot_size);
1871
1872 /* Verify size of file vs. image size info in file's header */
1873 if (ucode_raw->size < sizeof(*ucode) +
1874 inst_size + data_size + init_size +
1875 init_data_size + boot_size) {
1876
1877 IWL_DEBUG_INFO("uCode file size %d too small\n",
1878 (int)ucode_raw->size);
1879 ret = -EINVAL;
1880 goto err_release;
1881 }
1882
1883 /* Verify that uCode images will fit in card's SRAM */
1884 if (inst_size > priv->hw_params.max_inst_size) {
1885 IWL_DEBUG_INFO("uCode instr len %d too large to fit in\n",
1886 inst_size);
1887 ret = -EINVAL;
1888 goto err_release;
1889 }
1890
1891 if (data_size > priv->hw_params.max_data_size) {
1892 IWL_DEBUG_INFO("uCode data len %d too large to fit in\n",
1893 data_size);
1894 ret = -EINVAL;
1895 goto err_release;
1896 }
1897 if (init_size > priv->hw_params.max_inst_size) {
1898 IWL_DEBUG_INFO
1899 ("uCode init instr len %d too large to fit in\n",
1900 init_size);
1901 ret = -EINVAL;
1902 goto err_release;
1903 }
1904 if (init_data_size > priv->hw_params.max_data_size) {
1905 IWL_DEBUG_INFO
1906 ("uCode init data len %d too large to fit in\n",
1907 init_data_size);
1908 ret = -EINVAL;
1909 goto err_release;
1910 }
1911 if (boot_size > priv->hw_params.max_bsm_size) {
1912 IWL_DEBUG_INFO
1913 ("uCode boot instr len %d too large to fit in\n",
1914 boot_size);
1915 ret = -EINVAL;
1916 goto err_release;
1917 }
1918
1919 /* Allocate ucode buffers for card's bus-master loading ... */
1920
1921 /* Runtime instructions and 2 copies of data:
1922 * 1) unmodified from disk
1923 * 2) backup cache for save/restore during power-downs */
1924 priv->ucode_code.len = inst_size;
1925 iwl_alloc_fw_desc(priv->pci_dev, &priv->ucode_code);
1926
1927 priv->ucode_data.len = data_size;
1928 iwl_alloc_fw_desc(priv->pci_dev, &priv->ucode_data);
1929
1930 priv->ucode_data_backup.len = data_size;
1931 iwl_alloc_fw_desc(priv->pci_dev, &priv->ucode_data_backup);
1932
1933 /* Initialization instructions and data */
1934 if (init_size && init_data_size) {
1935 priv->ucode_init.len = init_size;
1936 iwl_alloc_fw_desc(priv->pci_dev, &priv->ucode_init);
1937
1938 priv->ucode_init_data.len = init_data_size;
1939 iwl_alloc_fw_desc(priv->pci_dev, &priv->ucode_init_data);
1940
1941 if (!priv->ucode_init.v_addr || !priv->ucode_init_data.v_addr)
1942 goto err_pci_alloc;
1943 }
1944
1945 /* Bootstrap (instructions only, no data) */
1946 if (boot_size) {
1947 priv->ucode_boot.len = boot_size;
1948 iwl_alloc_fw_desc(priv->pci_dev, &priv->ucode_boot);
1949
1950 if (!priv->ucode_boot.v_addr)
1951 goto err_pci_alloc;
1952 }
1953
1954 /* Copy images into buffers for card's bus-master reads ... */
1955
1956 /* Runtime instructions (first block of data in file) */
1957 src = &ucode->data[0];
1958 len = priv->ucode_code.len;
1959 IWL_DEBUG_INFO("Copying (but not loading) uCode instr len %Zd\n", len);
1960 memcpy(priv->ucode_code.v_addr, src, len);
1961 IWL_DEBUG_INFO("uCode instr buf vaddr = 0x%p, paddr = 0x%08x\n",
1962 priv->ucode_code.v_addr, (u32)priv->ucode_code.p_addr);
1963
1964 /* Runtime data (2nd block)
1965 * NOTE: Copy into backup buffer will be done in iwl4965_up() */
1966 src = &ucode->data[inst_size];
1967 len = priv->ucode_data.len;
1968 IWL_DEBUG_INFO("Copying (but not loading) uCode data len %Zd\n", len);
1969 memcpy(priv->ucode_data.v_addr, src, len);
1970 memcpy(priv->ucode_data_backup.v_addr, src, len);
1971
1972 /* Initialization instructions (3rd block) */
1973 if (init_size) {
1974 src = &ucode->data[inst_size + data_size];
1975 len = priv->ucode_init.len;
1976 IWL_DEBUG_INFO("Copying (but not loading) init instr len %Zd\n",
1977 len);
1978 memcpy(priv->ucode_init.v_addr, src, len);
1979 }
1980
1981 /* Initialization data (4th block) */
1982 if (init_data_size) {
1983 src = &ucode->data[inst_size + data_size + init_size];
1984 len = priv->ucode_init_data.len;
1985 IWL_DEBUG_INFO("Copying (but not loading) init data len %Zd\n",
1986 len);
1987 memcpy(priv->ucode_init_data.v_addr, src, len);
1988 }
1989
1990 /* Bootstrap instructions (5th block) */
1991 src = &ucode->data[inst_size + data_size + init_size + init_data_size];
1992 len = priv->ucode_boot.len;
1993 IWL_DEBUG_INFO("Copying (but not loading) boot instr len %Zd\n", len);
1994 memcpy(priv->ucode_boot.v_addr, src, len);
1995
1996 /* We have our copies now, allow OS release its copies */
1997 release_firmware(ucode_raw);
1998 return 0;
1999
2000 err_pci_alloc:
2001 IWL_ERROR("failed to allocate pci memory\n");
2002 ret = -ENOMEM;
2003 iwl4965_dealloc_ucode_pci(priv);
2004
2005 err_release:
2006 release_firmware(ucode_raw);
2007
2008 error:
2009 return ret;
2010 }
2011
2012 /**
2013 * iwl_alive_start - called after REPLY_ALIVE notification received
2014 * from protocol/runtime uCode (initialization uCode's
2015 * Alive gets handled by iwl_init_alive_start()).
2016 */
2017 static void iwl_alive_start(struct iwl_priv *priv)
2018 {
2019 int ret = 0;
2020
2021 IWL_DEBUG_INFO("Runtime Alive received.\n");
2022
2023 if (priv->card_alive.is_valid != UCODE_VALID_OK) {
2024 /* We had an error bringing up the hardware, so take it
2025 * all the way back down so we can try again */
2026 IWL_DEBUG_INFO("Alive failed.\n");
2027 goto restart;
2028 }
2029
2030 /* Initialize uCode has loaded Runtime uCode ... verify inst image.
2031 * This is a paranoid check, because we would not have gotten the
2032 * "runtime" alive if code weren't properly loaded. */
2033 if (iwl_verify_ucode(priv)) {
2034 /* Runtime instruction load was bad;
2035 * take it all the way back down so we can try again */
2036 IWL_DEBUG_INFO("Bad runtime uCode load.\n");
2037 goto restart;
2038 }
2039
2040 iwl_clear_stations_table(priv);
2041 ret = priv->cfg->ops->lib->alive_notify(priv);
2042 if (ret) {
2043 IWL_WARNING("Could not complete ALIVE transition [ntf]: %d\n",
2044 ret);
2045 goto restart;
2046 }
2047
2048 /* After the ALIVE response, we can send host commands to 4965 uCode */
2049 set_bit(STATUS_ALIVE, &priv->status);
2050
2051 if (iwl_is_rfkill(priv))
2052 return;
2053
2054 ieee80211_wake_queues(priv->hw);
2055
2056 priv->active_rate = priv->rates_mask;
2057 priv->active_rate_basic = priv->rates_mask & IWL_BASIC_RATES_MASK;
2058
2059 if (iwl_is_associated(priv)) {
2060 struct iwl_rxon_cmd *active_rxon =
2061 (struct iwl_rxon_cmd *)&priv->active_rxon;
2062
2063 memcpy(&priv->staging_rxon, &priv->active_rxon,
2064 sizeof(priv->staging_rxon));
2065 active_rxon->filter_flags &= ~RXON_FILTER_ASSOC_MSK;
2066 } else {
2067 /* Initialize our rx_config data */
2068 iwl4965_connection_init_rx_config(priv);
2069 memcpy(priv->staging_rxon.node_addr, priv->mac_addr, ETH_ALEN);
2070 }
2071
2072 /* Configure Bluetooth device coexistence support */
2073 iwl4965_send_bt_config(priv);
2074
2075 iwl_reset_run_time_calib(priv);
2076
2077 /* Configure the adapter for unassociated operation */
2078 iwl4965_commit_rxon(priv);
2079
2080 /* At this point, the NIC is initialized and operational */
2081 iwl_rf_kill_ct_config(priv);
2082
2083 iwl_leds_register(priv);
2084
2085 IWL_DEBUG_INFO("ALIVE processing complete.\n");
2086 set_bit(STATUS_READY, &priv->status);
2087 wake_up_interruptible(&priv->wait_command_queue);
2088
2089 if (priv->error_recovering)
2090 iwl4965_error_recovery(priv);
2091
2092 iwl_power_update_mode(priv, 1);
2093
2094 if (test_and_clear_bit(STATUS_MODE_PENDING, &priv->status))
2095 iwl4965_set_mode(priv, priv->iw_mode);
2096
2097 return;
2098
2099 restart:
2100 queue_work(priv->workqueue, &priv->restart);
2101 }
2102
2103 static void iwl_cancel_deferred_work(struct iwl_priv *priv);
2104
2105 static void __iwl4965_down(struct iwl_priv *priv)
2106 {
2107 unsigned long flags;
2108 int exit_pending = test_bit(STATUS_EXIT_PENDING, &priv->status);
2109
2110 IWL_DEBUG_INFO(DRV_NAME " is going down\n");
2111
2112 if (!exit_pending)
2113 set_bit(STATUS_EXIT_PENDING, &priv->status);
2114
2115 iwl_leds_unregister(priv);
2116
2117 iwl_clear_stations_table(priv);
2118
2119 /* Unblock any waiting calls */
2120 wake_up_interruptible_all(&priv->wait_command_queue);
2121
2122 /* Wipe out the EXIT_PENDING status bit if we are not actually
2123 * exiting the module */
2124 if (!exit_pending)
2125 clear_bit(STATUS_EXIT_PENDING, &priv->status);
2126
2127 /* stop and reset the on-board processor */
2128 iwl_write32(priv, CSR_RESET, CSR_RESET_REG_FLAG_NEVO_RESET);
2129
2130 /* tell the device to stop sending interrupts */
2131 spin_lock_irqsave(&priv->lock, flags);
2132 iwl4965_disable_interrupts(priv);
2133 spin_unlock_irqrestore(&priv->lock, flags);
2134 iwl_synchronize_irq(priv);
2135
2136 if (priv->mac80211_registered)
2137 ieee80211_stop_queues(priv->hw);
2138
2139 /* If we have not previously called iwl4965_init() then
2140 * clear all bits but the RF Kill and SUSPEND bits and return */
2141 if (!iwl_is_init(priv)) {
2142 priv->status = test_bit(STATUS_RF_KILL_HW, &priv->status) <<
2143 STATUS_RF_KILL_HW |
2144 test_bit(STATUS_RF_KILL_SW, &priv->status) <<
2145 STATUS_RF_KILL_SW |
2146 test_bit(STATUS_GEO_CONFIGURED, &priv->status) <<
2147 STATUS_GEO_CONFIGURED |
2148 test_bit(STATUS_IN_SUSPEND, &priv->status) <<
2149 STATUS_IN_SUSPEND |
2150 test_bit(STATUS_EXIT_PENDING, &priv->status) <<
2151 STATUS_EXIT_PENDING;
2152 goto exit;
2153 }
2154
2155 /* ...otherwise clear out all the status bits but the RF Kill and
2156 * SUSPEND bits and continue taking the NIC down. */
2157 priv->status &= test_bit(STATUS_RF_KILL_HW, &priv->status) <<
2158 STATUS_RF_KILL_HW |
2159 test_bit(STATUS_RF_KILL_SW, &priv->status) <<
2160 STATUS_RF_KILL_SW |
2161 test_bit(STATUS_GEO_CONFIGURED, &priv->status) <<
2162 STATUS_GEO_CONFIGURED |
2163 test_bit(STATUS_IN_SUSPEND, &priv->status) <<
2164 STATUS_IN_SUSPEND |
2165 test_bit(STATUS_FW_ERROR, &priv->status) <<
2166 STATUS_FW_ERROR |
2167 test_bit(STATUS_EXIT_PENDING, &priv->status) <<
2168 STATUS_EXIT_PENDING;
2169
2170 spin_lock_irqsave(&priv->lock, flags);
2171 iwl_clear_bit(priv, CSR_GP_CNTRL,
2172 CSR_GP_CNTRL_REG_FLAG_MAC_ACCESS_REQ);
2173 spin_unlock_irqrestore(&priv->lock, flags);
2174
2175 iwl_txq_ctx_stop(priv);
2176 iwl_rxq_stop(priv);
2177
2178 spin_lock_irqsave(&priv->lock, flags);
2179 if (!iwl_grab_nic_access(priv)) {
2180 iwl_write_prph(priv, APMG_CLK_DIS_REG,
2181 APMG_CLK_VAL_DMA_CLK_RQT);
2182 iwl_release_nic_access(priv);
2183 }
2184 spin_unlock_irqrestore(&priv->lock, flags);
2185
2186 udelay(5);
2187
2188 /* FIXME: apm_ops.suspend(priv) */
2189 if (exit_pending || test_bit(STATUS_IN_SUSPEND, &priv->status))
2190 priv->cfg->ops->lib->apm_ops.stop(priv);
2191 else
2192 priv->cfg->ops->lib->apm_ops.reset(priv);
2193 priv->cfg->ops->lib->free_shared_mem(priv);
2194
2195 exit:
2196 memset(&priv->card_alive, 0, sizeof(struct iwl_alive_resp));
2197
2198 if (priv->ibss_beacon)
2199 dev_kfree_skb(priv->ibss_beacon);
2200 priv->ibss_beacon = NULL;
2201
2202 /* clear out any free frames */
2203 iwl_clear_free_frames(priv);
2204 }
2205
2206 static void iwl4965_down(struct iwl_priv *priv)
2207 {
2208 mutex_lock(&priv->mutex);
2209 __iwl4965_down(priv);
2210 mutex_unlock(&priv->mutex);
2211
2212 iwl_cancel_deferred_work(priv);
2213 }
2214
2215 #define MAX_HW_RESTARTS 5
2216
2217 static int __iwl4965_up(struct iwl_priv *priv)
2218 {
2219 int i;
2220 int ret;
2221
2222 if (test_bit(STATUS_EXIT_PENDING, &priv->status)) {
2223 IWL_WARNING("Exit pending; will not bring the NIC up\n");
2224 return -EIO;
2225 }
2226
2227 if (!priv->ucode_data_backup.v_addr || !priv->ucode_data.v_addr) {
2228 IWL_ERROR("ucode not available for device bringup\n");
2229 return -EIO;
2230 }
2231
2232 /* If platform's RF_KILL switch is NOT set to KILL */
2233 if (iwl_read32(priv, CSR_GP_CNTRL) & CSR_GP_CNTRL_REG_FLAG_HW_RF_KILL_SW)
2234 clear_bit(STATUS_RF_KILL_HW, &priv->status);
2235 else
2236 set_bit(STATUS_RF_KILL_HW, &priv->status);
2237
2238 if (iwl_is_rfkill(priv)) {
2239 iwl4965_enable_interrupts(priv);
2240 IWL_WARNING("Radio disabled by %s RF Kill switch\n",
2241 test_bit(STATUS_RF_KILL_HW, &priv->status) ? "HW" : "SW");
2242 return 0;
2243 }
2244
2245 iwl_write32(priv, CSR_INT, 0xFFFFFFFF);
2246
2247 ret = priv->cfg->ops->lib->alloc_shared_mem(priv);
2248 if (ret) {
2249 IWL_ERROR("Unable to allocate shared memory\n");
2250 return ret;
2251 }
2252
2253 ret = iwl_hw_nic_init(priv);
2254 if (ret) {
2255 IWL_ERROR("Unable to init nic\n");
2256 return ret;
2257 }
2258
2259 /* make sure rfkill handshake bits are cleared */
2260 iwl_write32(priv, CSR_UCODE_DRV_GP1_CLR, CSR_UCODE_SW_BIT_RFKILL);
2261 iwl_write32(priv, CSR_UCODE_DRV_GP1_CLR,
2262 CSR_UCODE_DRV_GP1_BIT_CMD_BLOCKED);
2263
2264 /* clear (again), then enable host interrupts */
2265 iwl_write32(priv, CSR_INT, 0xFFFFFFFF);
2266 iwl4965_enable_interrupts(priv);
2267
2268 /* really make sure rfkill handshake bits are cleared */
2269 iwl_write32(priv, CSR_UCODE_DRV_GP1_CLR, CSR_UCODE_SW_BIT_RFKILL);
2270 iwl_write32(priv, CSR_UCODE_DRV_GP1_CLR, CSR_UCODE_SW_BIT_RFKILL);
2271
2272 /* Copy original ucode data image from disk into backup cache.
2273 * This will be used to initialize the on-board processor's
2274 * data SRAM for a clean start when the runtime program first loads. */
2275 memcpy(priv->ucode_data_backup.v_addr, priv->ucode_data.v_addr,
2276 priv->ucode_data.len);
2277
2278 for (i = 0; i < MAX_HW_RESTARTS; i++) {
2279
2280 iwl_clear_stations_table(priv);
2281
2282 /* load bootstrap state machine,
2283 * load bootstrap program into processor's memory,
2284 * prepare to load the "initialize" uCode */
2285 ret = priv->cfg->ops->lib->load_ucode(priv);
2286
2287 if (ret) {
2288 IWL_ERROR("Unable to set up bootstrap uCode: %d\n", ret);
2289 continue;
2290 }
2291
2292 /* Clear out the uCode error bit if it is set */
2293 clear_bit(STATUS_FW_ERROR, &priv->status);
2294
2295 /* start card; "initialize" will load runtime ucode */
2296 iwl4965_nic_start(priv);
2297
2298 IWL_DEBUG_INFO(DRV_NAME " is coming up\n");
2299
2300 return 0;
2301 }
2302
2303 set_bit(STATUS_EXIT_PENDING, &priv->status);
2304 __iwl4965_down(priv);
2305 clear_bit(STATUS_EXIT_PENDING, &priv->status);
2306
2307 /* tried to restart and config the device for as long as our
2308 * patience could withstand */
2309 IWL_ERROR("Unable to initialize device after %d attempts.\n", i);
2310 return -EIO;
2311 }
2312
2313
2314 /*****************************************************************************
2315 *
2316 * Workqueue callbacks
2317 *
2318 *****************************************************************************/
2319
2320 static void iwl_bg_init_alive_start(struct work_struct *data)
2321 {
2322 struct iwl_priv *priv =
2323 container_of(data, struct iwl_priv, init_alive_start.work);
2324
2325 if (test_bit(STATUS_EXIT_PENDING, &priv->status))
2326 return;
2327
2328 mutex_lock(&priv->mutex);
2329 priv->cfg->ops->lib->init_alive_start(priv);
2330 mutex_unlock(&priv->mutex);
2331 }
2332
2333 static void iwl_bg_alive_start(struct work_struct *data)
2334 {
2335 struct iwl_priv *priv =
2336 container_of(data, struct iwl_priv, alive_start.work);
2337
2338 if (test_bit(STATUS_EXIT_PENDING, &priv->status))
2339 return;
2340
2341 mutex_lock(&priv->mutex);
2342 iwl_alive_start(priv);
2343 mutex_unlock(&priv->mutex);
2344 }
2345
2346 static void iwl4965_bg_rf_kill(struct work_struct *work)
2347 {
2348 struct iwl_priv *priv = container_of(work, struct iwl_priv, rf_kill);
2349
2350 wake_up_interruptible(&priv->wait_command_queue);
2351
2352 if (test_bit(STATUS_EXIT_PENDING, &priv->status))
2353 return;
2354
2355 mutex_lock(&priv->mutex);
2356
2357 if (!iwl_is_rfkill(priv)) {
2358 IWL_DEBUG(IWL_DL_RF_KILL,
2359 "HW and/or SW RF Kill no longer active, restarting "
2360 "device\n");
2361 if (!test_bit(STATUS_EXIT_PENDING, &priv->status))
2362 queue_work(priv->workqueue, &priv->restart);
2363 } else {
2364 /* make sure mac80211 stop sending Tx frame */
2365 if (priv->mac80211_registered)
2366 ieee80211_stop_queues(priv->hw);
2367
2368 if (!test_bit(STATUS_RF_KILL_HW, &priv->status))
2369 IWL_DEBUG_RF_KILL("Can not turn radio back on - "
2370 "disabled by SW switch\n");
2371 else
2372 IWL_WARNING("Radio Frequency Kill Switch is On:\n"
2373 "Kill switch must be turned off for "
2374 "wireless networking to work.\n");
2375 }
2376 mutex_unlock(&priv->mutex);
2377 iwl_rfkill_set_hw_state(priv);
2378 }
2379
2380 static void iwl4965_bg_set_monitor(struct work_struct *work)
2381 {
2382 struct iwl_priv *priv = container_of(work,
2383 struct iwl_priv, set_monitor);
2384 int ret;
2385
2386 IWL_DEBUG(IWL_DL_STATE, "setting monitor mode\n");
2387
2388 mutex_lock(&priv->mutex);
2389
2390 ret = iwl4965_set_mode(priv, NL80211_IFTYPE_MONITOR);
2391
2392 if (ret) {
2393 if (ret == -EAGAIN)
2394 IWL_DEBUG(IWL_DL_STATE, "leave - not ready\n");
2395 else
2396 IWL_ERROR("iwl4965_set_mode() failed ret = %d\n", ret);
2397 }
2398
2399 mutex_unlock(&priv->mutex);
2400 }
2401
2402 static void iwl_bg_run_time_calib_work(struct work_struct *work)
2403 {
2404 struct iwl_priv *priv = container_of(work, struct iwl_priv,
2405 run_time_calib_work);
2406
2407 mutex_lock(&priv->mutex);
2408
2409 if (test_bit(STATUS_EXIT_PENDING, &priv->status) ||
2410 test_bit(STATUS_SCANNING, &priv->status)) {
2411 mutex_unlock(&priv->mutex);
2412 return;
2413 }
2414
2415 if (priv->start_calib) {
2416 iwl_chain_noise_calibration(priv, &priv->statistics);
2417
2418 iwl_sensitivity_calibration(priv, &priv->statistics);
2419 }
2420
2421 mutex_unlock(&priv->mutex);
2422 return;
2423 }
2424
2425 static void iwl4965_bg_up(struct work_struct *data)
2426 {
2427 struct iwl_priv *priv = container_of(data, struct iwl_priv, up);
2428
2429 if (test_bit(STATUS_EXIT_PENDING, &priv->status))
2430 return;
2431
2432 mutex_lock(&priv->mutex);
2433 __iwl4965_up(priv);
2434 mutex_unlock(&priv->mutex);
2435 iwl_rfkill_set_hw_state(priv);
2436 }
2437
2438 static void iwl4965_bg_restart(struct work_struct *data)
2439 {
2440 struct iwl_priv *priv = container_of(data, struct iwl_priv, restart);
2441
2442 if (test_bit(STATUS_EXIT_PENDING, &priv->status))
2443 return;
2444
2445 iwl4965_down(priv);
2446 queue_work(priv->workqueue, &priv->up);
2447 }
2448
2449 static void iwl4965_bg_rx_replenish(struct work_struct *data)
2450 {
2451 struct iwl_priv *priv =
2452 container_of(data, struct iwl_priv, rx_replenish);
2453
2454 if (test_bit(STATUS_EXIT_PENDING, &priv->status))
2455 return;
2456
2457 mutex_lock(&priv->mutex);
2458 iwl_rx_replenish(priv);
2459 mutex_unlock(&priv->mutex);
2460 }
2461
2462 #define IWL_DELAY_NEXT_SCAN (HZ*2)
2463
2464 static void iwl4965_post_associate(struct iwl_priv *priv)
2465 {
2466 struct ieee80211_conf *conf = NULL;
2467 int ret = 0;
2468 DECLARE_MAC_BUF(mac);
2469 unsigned long flags;
2470
2471 if (priv->iw_mode == NL80211_IFTYPE_AP) {
2472 IWL_ERROR("%s Should not be called in AP mode\n", __func__);
2473 return;
2474 }
2475
2476 IWL_DEBUG_ASSOC("Associated as %d to: %s\n",
2477 priv->assoc_id,
2478 print_mac(mac, priv->active_rxon.bssid_addr));
2479
2480
2481 if (test_bit(STATUS_EXIT_PENDING, &priv->status))
2482 return;
2483
2484
2485 if (!priv->vif || !priv->is_open)
2486 return;
2487
2488 iwl_power_cancel_timeout(priv);
2489 iwl_scan_cancel_timeout(priv, 200);
2490
2491 conf = ieee80211_get_hw_conf(priv->hw);
2492
2493 priv->staging_rxon.filter_flags &= ~RXON_FILTER_ASSOC_MSK;
2494 iwl4965_commit_rxon(priv);
2495
2496 memset(&priv->rxon_timing, 0, sizeof(struct iwl4965_rxon_time_cmd));
2497 iwl4965_setup_rxon_timing(priv);
2498 ret = iwl_send_cmd_pdu(priv, REPLY_RXON_TIMING,
2499 sizeof(priv->rxon_timing), &priv->rxon_timing);
2500 if (ret)
2501 IWL_WARNING("REPLY_RXON_TIMING failed - "
2502 "Attempting to continue.\n");
2503
2504 priv->staging_rxon.filter_flags |= RXON_FILTER_ASSOC_MSK;
2505
2506 iwl_set_rxon_ht(priv, &priv->current_ht_config);
2507
2508 iwl_set_rxon_chain(priv);
2509 priv->staging_rxon.assoc_id = cpu_to_le16(priv->assoc_id);
2510
2511 IWL_DEBUG_ASSOC("assoc id %d beacon interval %d\n",
2512 priv->assoc_id, priv->beacon_int);
2513
2514 if (priv->assoc_capability & WLAN_CAPABILITY_SHORT_PREAMBLE)
2515 priv->staging_rxon.flags |= RXON_FLG_SHORT_PREAMBLE_MSK;
2516 else
2517 priv->staging_rxon.flags &= ~RXON_FLG_SHORT_PREAMBLE_MSK;
2518
2519 if (priv->staging_rxon.flags & RXON_FLG_BAND_24G_MSK) {
2520 if (priv->assoc_capability & WLAN_CAPABILITY_SHORT_SLOT_TIME)
2521 priv->staging_rxon.flags |= RXON_FLG_SHORT_SLOT_MSK;
2522 else
2523 priv->staging_rxon.flags &= ~RXON_FLG_SHORT_SLOT_MSK;
2524
2525 if (priv->iw_mode == NL80211_IFTYPE_ADHOC)
2526 priv->staging_rxon.flags &= ~RXON_FLG_SHORT_SLOT_MSK;
2527
2528 }
2529
2530 iwl4965_commit_rxon(priv);
2531
2532 switch (priv->iw_mode) {
2533 case NL80211_IFTYPE_STATION:
2534 break;
2535
2536 case NL80211_IFTYPE_ADHOC:
2537
2538 /* assume default assoc id */
2539 priv->assoc_id = 1;
2540
2541 iwl_rxon_add_station(priv, priv->bssid, 0);
2542 iwl4965_send_beacon_cmd(priv);
2543
2544 break;
2545
2546 default:
2547 IWL_ERROR("%s Should not be called in %d mode\n",
2548 __func__, priv->iw_mode);
2549 break;
2550 }
2551
2552 if (priv->iw_mode == NL80211_IFTYPE_ADHOC)
2553 priv->assoc_station_added = 1;
2554
2555 spin_lock_irqsave(&priv->lock, flags);
2556 iwl_activate_qos(priv, 0);
2557 spin_unlock_irqrestore(&priv->lock, flags);
2558
2559 /* the chain noise calibration will enabled PM upon completion
2560 * If chain noise has already been run, then we need to enable
2561 * power management here */
2562 if (priv->chain_noise_data.state == IWL_CHAIN_NOISE_DONE)
2563 iwl_power_enable_management(priv);
2564
2565 /* Enable Rx differential gain and sensitivity calibrations */
2566 iwl_chain_noise_reset(priv);
2567 priv->start_calib = 1;
2568
2569 }
2570
2571 /*****************************************************************************
2572 *
2573 * mac80211 entry point functions
2574 *
2575 *****************************************************************************/
2576
2577 #define UCODE_READY_TIMEOUT (4 * HZ)
2578
2579 static int iwl4965_mac_start(struct ieee80211_hw *hw)
2580 {
2581 struct iwl_priv *priv = hw->priv;
2582 int ret;
2583 u16 pci_cmd;
2584
2585 IWL_DEBUG_MAC80211("enter\n");
2586
2587 if (pci_enable_device(priv->pci_dev)) {
2588 IWL_ERROR("Fail to pci_enable_device\n");
2589 return -ENODEV;
2590 }
2591 pci_restore_state(priv->pci_dev);
2592 pci_enable_msi(priv->pci_dev);
2593
2594 /* enable interrupts if needed: hw bug w/a */
2595 pci_read_config_word(priv->pci_dev, PCI_COMMAND, &pci_cmd);
2596 if (pci_cmd & PCI_COMMAND_INTX_DISABLE) {
2597 pci_cmd &= ~PCI_COMMAND_INTX_DISABLE;
2598 pci_write_config_word(priv->pci_dev, PCI_COMMAND, pci_cmd);
2599 }
2600
2601 ret = request_irq(priv->pci_dev->irq, iwl4965_isr, IRQF_SHARED,
2602 DRV_NAME, priv);
2603 if (ret) {
2604 IWL_ERROR("Error allocating IRQ %d\n", priv->pci_dev->irq);
2605 goto out_disable_msi;
2606 }
2607
2608 /* we should be verifying the device is ready to be opened */
2609 mutex_lock(&priv->mutex);
2610
2611 memset(&priv->staging_rxon, 0, sizeof(struct iwl_rxon_cmd));
2612 /* fetch ucode file from disk, alloc and copy to bus-master buffers ...
2613 * ucode filename and max sizes are card-specific. */
2614
2615 if (!priv->ucode_code.len) {
2616 ret = iwl4965_read_ucode(priv);
2617 if (ret) {
2618 IWL_ERROR("Could not read microcode: %d\n", ret);
2619 mutex_unlock(&priv->mutex);
2620 goto out_release_irq;
2621 }
2622 }
2623
2624 ret = __iwl4965_up(priv);
2625
2626 mutex_unlock(&priv->mutex);
2627
2628 iwl_rfkill_set_hw_state(priv);
2629
2630 if (ret)
2631 goto out_release_irq;
2632
2633 if (iwl_is_rfkill(priv))
2634 goto out;
2635
2636 IWL_DEBUG_INFO("Start UP work done.\n");
2637
2638 if (test_bit(STATUS_IN_SUSPEND, &priv->status))
2639 return 0;
2640
2641 /* Wait for START_ALIVE from Run Time ucode. Otherwise callbacks from
2642 * mac80211 will not be run successfully. */
2643 ret = wait_event_interruptible_timeout(priv->wait_command_queue,
2644 test_bit(STATUS_READY, &priv->status),
2645 UCODE_READY_TIMEOUT);
2646 if (!ret) {
2647 if (!test_bit(STATUS_READY, &priv->status)) {
2648 IWL_ERROR("START_ALIVE timeout after %dms.\n",
2649 jiffies_to_msecs(UCODE_READY_TIMEOUT));
2650 ret = -ETIMEDOUT;
2651 goto out_release_irq;
2652 }
2653 }
2654
2655 out:
2656 priv->is_open = 1;
2657 IWL_DEBUG_MAC80211("leave\n");
2658 return 0;
2659
2660 out_release_irq:
2661 free_irq(priv->pci_dev->irq, priv);
2662 out_disable_msi:
2663 pci_disable_msi(priv->pci_dev);
2664 pci_disable_device(priv->pci_dev);
2665 priv->is_open = 0;
2666 IWL_DEBUG_MAC80211("leave - failed\n");
2667 return ret;
2668 }
2669
2670 static void iwl4965_mac_stop(struct ieee80211_hw *hw)
2671 {
2672 struct iwl_priv *priv = hw->priv;
2673
2674 IWL_DEBUG_MAC80211("enter\n");
2675
2676 if (!priv->is_open) {
2677 IWL_DEBUG_MAC80211("leave - skip\n");
2678 return;
2679 }
2680
2681 priv->is_open = 0;
2682
2683 if (iwl_is_ready_rf(priv)) {
2684 /* stop mac, cancel any scan request and clear
2685 * RXON_FILTER_ASSOC_MSK BIT
2686 */
2687 mutex_lock(&priv->mutex);
2688 iwl_scan_cancel_timeout(priv, 100);
2689 mutex_unlock(&priv->mutex);
2690 }
2691
2692 iwl4965_down(priv);
2693
2694 flush_workqueue(priv->workqueue);
2695 free_irq(priv->pci_dev->irq, priv);
2696 pci_disable_msi(priv->pci_dev);
2697 pci_save_state(priv->pci_dev);
2698 pci_disable_device(priv->pci_dev);
2699
2700 IWL_DEBUG_MAC80211("leave\n");
2701 }
2702
2703 static int iwl4965_mac_tx(struct ieee80211_hw *hw, struct sk_buff *skb)
2704 {
2705 struct iwl_priv *priv = hw->priv;
2706
2707 IWL_DEBUG_MACDUMP("enter\n");
2708
2709 IWL_DEBUG_TX("dev->xmit(%d bytes) at rate 0x%02x\n", skb->len,
2710 ieee80211_get_tx_rate(hw, IEEE80211_SKB_CB(skb))->bitrate);
2711
2712 if (iwl_tx_skb(priv, skb))
2713 dev_kfree_skb_any(skb);
2714
2715 IWL_DEBUG_MACDUMP("leave\n");
2716 return 0;
2717 }
2718
2719 static int iwl4965_mac_add_interface(struct ieee80211_hw *hw,
2720 struct ieee80211_if_init_conf *conf)
2721 {
2722 struct iwl_priv *priv = hw->priv;
2723 unsigned long flags;
2724 DECLARE_MAC_BUF(mac);
2725
2726 IWL_DEBUG_MAC80211("enter: type %d\n", conf->type);
2727
2728 if (priv->vif) {
2729 IWL_DEBUG_MAC80211("leave - vif != NULL\n");
2730 return -EOPNOTSUPP;
2731 }
2732
2733 spin_lock_irqsave(&priv->lock, flags);
2734 priv->vif = conf->vif;
2735
2736 spin_unlock_irqrestore(&priv->lock, flags);
2737
2738 mutex_lock(&priv->mutex);
2739
2740 if (conf->mac_addr) {
2741 IWL_DEBUG_MAC80211("Set %s\n", print_mac(mac, conf->mac_addr));
2742 memcpy(priv->mac_addr, conf->mac_addr, ETH_ALEN);
2743 }
2744
2745 if (iwl4965_set_mode(priv, conf->type) == -EAGAIN)
2746 /* we are not ready, will run again when ready */
2747 set_bit(STATUS_MODE_PENDING, &priv->status);
2748
2749 mutex_unlock(&priv->mutex);
2750
2751 IWL_DEBUG_MAC80211("leave\n");
2752 return 0;
2753 }
2754
2755 /**
2756 * iwl4965_mac_config - mac80211 config callback
2757 *
2758 * We ignore conf->flags & IEEE80211_CONF_SHORT_SLOT_TIME since it seems to
2759 * be set inappropriately and the driver currently sets the hardware up to
2760 * use it whenever needed.
2761 */
2762 static int iwl4965_mac_config(struct ieee80211_hw *hw, struct ieee80211_conf *conf)
2763 {
2764 struct iwl_priv *priv = hw->priv;
2765 const struct iwl_channel_info *ch_info;
2766 unsigned long flags;
2767 int ret = 0;
2768 u16 channel;
2769
2770 mutex_lock(&priv->mutex);
2771 IWL_DEBUG_MAC80211("enter to channel %d\n", conf->channel->hw_value);
2772
2773 if (conf->radio_enabled && iwl_radio_kill_sw_enable_radio(priv)) {
2774 IWL_DEBUG_MAC80211("leave - RF-KILL - waiting for uCode\n");
2775 goto out;
2776 }
2777
2778 if (!conf->radio_enabled)
2779 iwl_radio_kill_sw_disable_radio(priv);
2780
2781 if (!iwl_is_ready(priv)) {
2782 IWL_DEBUG_MAC80211("leave - not ready\n");
2783 ret = -EIO;
2784 goto out;
2785 }
2786
2787 if (unlikely(!priv->cfg->mod_params->disable_hw_scan &&
2788 test_bit(STATUS_SCANNING, &priv->status))) {
2789 IWL_DEBUG_MAC80211("leave - scanning\n");
2790 mutex_unlock(&priv->mutex);
2791 return 0;
2792 }
2793
2794 channel = ieee80211_frequency_to_channel(conf->channel->center_freq);
2795 ch_info = iwl_get_channel_info(priv, conf->channel->band, channel);
2796 if (!is_channel_valid(ch_info)) {
2797 IWL_DEBUG_MAC80211("leave - invalid channel\n");
2798 ret = -EINVAL;
2799 goto out;
2800 }
2801
2802 if (priv->iw_mode == NL80211_IFTYPE_ADHOC &&
2803 !is_channel_ibss(ch_info)) {
2804 IWL_ERROR("channel %d in band %d not IBSS channel\n",
2805 conf->channel->hw_value, conf->channel->band);
2806 ret = -EINVAL;
2807 goto out;
2808 }
2809
2810 spin_lock_irqsave(&priv->lock, flags);
2811
2812
2813 /* if we are switching from ht to 2.4 clear flags
2814 * from any ht related info since 2.4 does not
2815 * support ht */
2816 if ((le16_to_cpu(priv->staging_rxon.channel) != channel)
2817 #ifdef IEEE80211_CONF_CHANNEL_SWITCH
2818 && !(conf->flags & IEEE80211_CONF_CHANNEL_SWITCH)
2819 #endif
2820 )
2821 priv->staging_rxon.flags = 0;
2822
2823 iwl_set_rxon_channel(priv, conf->channel);
2824
2825 iwl_set_flags_for_band(priv, conf->channel->band);
2826
2827 /* The list of supported rates and rate mask can be different
2828 * for each band; since the band may have changed, reset
2829 * the rate mask to what mac80211 lists */
2830 iwl4965_set_rate(priv);
2831
2832 spin_unlock_irqrestore(&priv->lock, flags);
2833
2834 #ifdef IEEE80211_CONF_CHANNEL_SWITCH
2835 if (conf->flags & IEEE80211_CONF_CHANNEL_SWITCH) {
2836 iwl4965_hw_channel_switch(priv, conf->channel);
2837 goto out;
2838 }
2839 #endif
2840
2841 if (!conf->radio_enabled) {
2842 IWL_DEBUG_MAC80211("leave - radio disabled\n");
2843 goto out;
2844 }
2845
2846 if (iwl_is_rfkill(priv)) {
2847 IWL_DEBUG_MAC80211("leave - RF kill\n");
2848 ret = -EIO;
2849 goto out;
2850 }
2851
2852 if (conf->flags & IEEE80211_CONF_PS)
2853 ret = iwl_power_set_user_mode(priv, IWL_POWER_INDEX_3);
2854 else
2855 ret = iwl_power_set_user_mode(priv, IWL_POWER_MODE_CAM);
2856 if (ret)
2857 IWL_DEBUG_MAC80211("Error setting power level\n");
2858
2859 IWL_DEBUG_MAC80211("TX Power old=%d new=%d\n",
2860 priv->tx_power_user_lmt, conf->power_level);
2861
2862 iwl_set_tx_power(priv, conf->power_level, false);
2863
2864 iwl4965_set_rate(priv);
2865
2866 if (memcmp(&priv->active_rxon,
2867 &priv->staging_rxon, sizeof(priv->staging_rxon)))
2868 iwl4965_commit_rxon(priv);
2869 else
2870 IWL_DEBUG_INFO("No re-sending same RXON configuration.\n");
2871
2872 IWL_DEBUG_MAC80211("leave\n");
2873
2874 out:
2875 mutex_unlock(&priv->mutex);
2876 return ret;
2877 }
2878
2879 static void iwl4965_config_ap(struct iwl_priv *priv)
2880 {
2881 int ret = 0;
2882 unsigned long flags;
2883
2884 if (test_bit(STATUS_EXIT_PENDING, &priv->status))
2885 return;
2886
2887 /* The following should be done only at AP bring up */
2888 if (!(iwl_is_associated(priv))) {
2889
2890 /* RXON - unassoc (to set timing command) */
2891 priv->staging_rxon.filter_flags &= ~RXON_FILTER_ASSOC_MSK;
2892 iwl4965_commit_rxon(priv);
2893
2894 /* RXON Timing */
2895 memset(&priv->rxon_timing, 0, sizeof(struct iwl4965_rxon_time_cmd));
2896 iwl4965_setup_rxon_timing(priv);
2897 ret = iwl_send_cmd_pdu(priv, REPLY_RXON_TIMING,
2898 sizeof(priv->rxon_timing), &priv->rxon_timing);
2899 if (ret)
2900 IWL_WARNING("REPLY_RXON_TIMING failed - "
2901 "Attempting to continue.\n");
2902
2903 iwl_set_rxon_chain(priv);
2904
2905 /* FIXME: what should be the assoc_id for AP? */
2906 priv->staging_rxon.assoc_id = cpu_to_le16(priv->assoc_id);
2907 if (priv->assoc_capability & WLAN_CAPABILITY_SHORT_PREAMBLE)
2908 priv->staging_rxon.flags |=
2909 RXON_FLG_SHORT_PREAMBLE_MSK;
2910 else
2911 priv->staging_rxon.flags &=
2912 ~RXON_FLG_SHORT_PREAMBLE_MSK;
2913
2914 if (priv->staging_rxon.flags & RXON_FLG_BAND_24G_MSK) {
2915 if (priv->assoc_capability &
2916 WLAN_CAPABILITY_SHORT_SLOT_TIME)
2917 priv->staging_rxon.flags |=
2918 RXON_FLG_SHORT_SLOT_MSK;
2919 else
2920 priv->staging_rxon.flags &=
2921 ~RXON_FLG_SHORT_SLOT_MSK;
2922
2923 if (priv->iw_mode == NL80211_IFTYPE_ADHOC)
2924 priv->staging_rxon.flags &=
2925 ~RXON_FLG_SHORT_SLOT_MSK;
2926 }
2927 /* restore RXON assoc */
2928 priv->staging_rxon.filter_flags |= RXON_FILTER_ASSOC_MSK;
2929 iwl4965_commit_rxon(priv);
2930 spin_lock_irqsave(&priv->lock, flags);
2931 iwl_activate_qos(priv, 1);
2932 spin_unlock_irqrestore(&priv->lock, flags);
2933 iwl_rxon_add_station(priv, iwl_bcast_addr, 0);
2934 }
2935 iwl4965_send_beacon_cmd(priv);
2936
2937 /* FIXME - we need to add code here to detect a totally new
2938 * configuration, reset the AP, unassoc, rxon timing, assoc,
2939 * clear sta table, add BCAST sta... */
2940 }
2941
2942 /* temporary */
2943 static int iwl4965_mac_beacon_update(struct ieee80211_hw *hw, struct sk_buff *skb);
2944
2945 static int iwl4965_mac_config_interface(struct ieee80211_hw *hw,
2946 struct ieee80211_vif *vif,
2947 struct ieee80211_if_conf *conf)
2948 {
2949 struct iwl_priv *priv = hw->priv;
2950 DECLARE_MAC_BUF(mac);
2951 unsigned long flags;
2952 int rc;
2953
2954 if (conf == NULL)
2955 return -EIO;
2956
2957 if (priv->vif != vif) {
2958 IWL_DEBUG_MAC80211("leave - priv->vif != vif\n");
2959 return 0;
2960 }
2961
2962 if (priv->iw_mode == NL80211_IFTYPE_ADHOC &&
2963 conf->changed & IEEE80211_IFCC_BEACON) {
2964 struct sk_buff *beacon = ieee80211_beacon_get(hw, vif);
2965 if (!beacon)
2966 return -ENOMEM;
2967 rc = iwl4965_mac_beacon_update(hw, beacon);
2968 if (rc)
2969 return rc;
2970 }
2971
2972 if ((priv->iw_mode == NL80211_IFTYPE_AP) &&
2973 (!conf->ssid_len)) {
2974 IWL_DEBUG_MAC80211
2975 ("Leaving in AP mode because HostAPD is not ready.\n");
2976 return 0;
2977 }
2978
2979 if (!iwl_is_alive(priv))
2980 return -EAGAIN;
2981
2982 mutex_lock(&priv->mutex);
2983
2984 if (conf->bssid)
2985 IWL_DEBUG_MAC80211("bssid: %s\n",
2986 print_mac(mac, conf->bssid));
2987
2988 /*
2989 * very dubious code was here; the probe filtering flag is never set:
2990 *
2991 if (unlikely(test_bit(STATUS_SCANNING, &priv->status)) &&
2992 !(priv->hw->flags & IEEE80211_HW_NO_PROBE_FILTERING)) {
2993 */
2994
2995 if (priv->iw_mode == NL80211_IFTYPE_AP) {
2996 if (!conf->bssid) {
2997 conf->bssid = priv->mac_addr;
2998 memcpy(priv->bssid, priv->mac_addr, ETH_ALEN);
2999 IWL_DEBUG_MAC80211("bssid was set to: %s\n",
3000 print_mac(mac, conf->bssid));
3001 }
3002 if (priv->ibss_beacon)
3003 dev_kfree_skb(priv->ibss_beacon);
3004
3005 priv->ibss_beacon = ieee80211_beacon_get(hw, vif);
3006 }
3007
3008 if (iwl_is_rfkill(priv))
3009 goto done;
3010
3011 if (conf->bssid && !is_zero_ether_addr(conf->bssid) &&
3012 !is_multicast_ether_addr(conf->bssid)) {
3013 /* If there is currently a HW scan going on in the background
3014 * then we need to cancel it else the RXON below will fail. */
3015 if (iwl_scan_cancel_timeout(priv, 100)) {
3016 IWL_WARNING("Aborted scan still in progress "
3017 "after 100ms\n");
3018 IWL_DEBUG_MAC80211("leaving - scan abort failed.\n");
3019 mutex_unlock(&priv->mutex);
3020 return -EAGAIN;
3021 }
3022 memcpy(priv->staging_rxon.bssid_addr, conf->bssid, ETH_ALEN);
3023
3024 /* TODO: Audit driver for usage of these members and see
3025 * if mac80211 deprecates them (priv->bssid looks like it
3026 * shouldn't be there, but I haven't scanned the IBSS code
3027 * to verify) - jpk */
3028 memcpy(priv->bssid, conf->bssid, ETH_ALEN);
3029
3030 if (priv->iw_mode == NL80211_IFTYPE_AP)
3031 iwl4965_config_ap(priv);
3032 else {
3033 rc = iwl4965_commit_rxon(priv);
3034 if ((priv->iw_mode == NL80211_IFTYPE_STATION) && rc)
3035 iwl_rxon_add_station(
3036 priv, priv->active_rxon.bssid_addr, 1);
3037 }
3038
3039 } else {
3040 iwl_scan_cancel_timeout(priv, 100);
3041 priv->staging_rxon.filter_flags &= ~RXON_FILTER_ASSOC_MSK;
3042 iwl4965_commit_rxon(priv);
3043 }
3044
3045 done:
3046 spin_lock_irqsave(&priv->lock, flags);
3047 if (!conf->ssid_len)
3048 memset(priv->essid, 0, IW_ESSID_MAX_SIZE);
3049 else
3050 memcpy(priv->essid, conf->ssid, conf->ssid_len);
3051
3052 priv->essid_len = conf->ssid_len;
3053 spin_unlock_irqrestore(&priv->lock, flags);
3054
3055 IWL_DEBUG_MAC80211("leave\n");
3056 mutex_unlock(&priv->mutex);
3057
3058 return 0;
3059 }
3060
3061 static void iwl4965_configure_filter(struct ieee80211_hw *hw,
3062 unsigned int changed_flags,
3063 unsigned int *total_flags,
3064 int mc_count, struct dev_addr_list *mc_list)
3065 {
3066 struct iwl_priv *priv = hw->priv;
3067
3068 if (changed_flags & (*total_flags) & FIF_OTHER_BSS) {
3069 IWL_DEBUG_MAC80211("Enter: type %d (0x%x, 0x%x)\n",
3070 NL80211_IFTYPE_MONITOR,
3071 changed_flags, *total_flags);
3072 /* queue work 'cuz mac80211 is holding a lock which
3073 * prevents us from issuing (synchronous) f/w cmds */
3074 queue_work(priv->workqueue, &priv->set_monitor);
3075 }
3076 *total_flags &= FIF_OTHER_BSS | FIF_ALLMULTI |
3077 FIF_BCN_PRBRESP_PROMISC | FIF_CONTROL;
3078 }
3079
3080 static void iwl4965_mac_remove_interface(struct ieee80211_hw *hw,
3081 struct ieee80211_if_init_conf *conf)
3082 {
3083 struct iwl_priv *priv = hw->priv;
3084
3085 IWL_DEBUG_MAC80211("enter\n");
3086
3087 mutex_lock(&priv->mutex);
3088
3089 if (iwl_is_ready_rf(priv)) {
3090 iwl_scan_cancel_timeout(priv, 100);
3091 priv->staging_rxon.filter_flags &= ~RXON_FILTER_ASSOC_MSK;
3092 iwl4965_commit_rxon(priv);
3093 }
3094 if (priv->vif == conf->vif) {
3095 priv->vif = NULL;
3096 memset(priv->bssid, 0, ETH_ALEN);
3097 memset(priv->essid, 0, IW_ESSID_MAX_SIZE);
3098 priv->essid_len = 0;
3099 }
3100 mutex_unlock(&priv->mutex);
3101
3102 IWL_DEBUG_MAC80211("leave\n");
3103
3104 }
3105
3106 #define IWL_DELAY_NEXT_SCAN_AFTER_ASSOC (HZ*6)
3107 static void iwl4965_bss_info_changed(struct ieee80211_hw *hw,
3108 struct ieee80211_vif *vif,
3109 struct ieee80211_bss_conf *bss_conf,
3110 u32 changes)
3111 {
3112 struct iwl_priv *priv = hw->priv;
3113
3114 IWL_DEBUG_MAC80211("changes = 0x%X\n", changes);
3115
3116 if (changes & BSS_CHANGED_ERP_PREAMBLE) {
3117 IWL_DEBUG_MAC80211("ERP_PREAMBLE %d\n",
3118 bss_conf->use_short_preamble);
3119 if (bss_conf->use_short_preamble)
3120 priv->staging_rxon.flags |= RXON_FLG_SHORT_PREAMBLE_MSK;
3121 else
3122 priv->staging_rxon.flags &= ~RXON_FLG_SHORT_PREAMBLE_MSK;
3123 }
3124
3125 if (changes & BSS_CHANGED_ERP_CTS_PROT) {
3126 IWL_DEBUG_MAC80211("ERP_CTS %d\n", bss_conf->use_cts_prot);
3127 if (bss_conf->use_cts_prot && (priv->band != IEEE80211_BAND_5GHZ))
3128 priv->staging_rxon.flags |= RXON_FLG_TGG_PROTECT_MSK;
3129 else
3130 priv->staging_rxon.flags &= ~RXON_FLG_TGG_PROTECT_MSK;
3131 }
3132
3133 if (changes & BSS_CHANGED_HT) {
3134 IWL_DEBUG_MAC80211("HT %d\n", bss_conf->assoc_ht);
3135 iwl4965_ht_conf(priv, bss_conf);
3136 iwl_set_rxon_chain(priv);
3137 }
3138
3139 if (changes & BSS_CHANGED_ASSOC) {
3140 IWL_DEBUG_MAC80211("ASSOC %d\n", bss_conf->assoc);
3141 /* This should never happen as this function should
3142 * never be called from interrupt context. */
3143 if (WARN_ON_ONCE(in_interrupt()))
3144 return;
3145 if (bss_conf->assoc) {
3146 priv->assoc_id = bss_conf->aid;
3147 priv->beacon_int = bss_conf->beacon_int;
3148 priv->power_data.dtim_period = bss_conf->dtim_period;
3149 priv->timestamp = bss_conf->timestamp;
3150 priv->assoc_capability = bss_conf->assoc_capability;
3151
3152 /* we have just associated, don't start scan too early
3153 * leave time for EAPOL exchange to complete
3154 */
3155 priv->next_scan_jiffies = jiffies +
3156 IWL_DELAY_NEXT_SCAN_AFTER_ASSOC;
3157 mutex_lock(&priv->mutex);
3158 iwl4965_post_associate(priv);
3159 mutex_unlock(&priv->mutex);
3160 } else {
3161 priv->assoc_id = 0;
3162 IWL_DEBUG_MAC80211("DISASSOC %d\n", bss_conf->assoc);
3163 }
3164 } else if (changes && iwl_is_associated(priv) && priv->assoc_id) {
3165 IWL_DEBUG_MAC80211("Associated Changes %d\n", changes);
3166 iwl_send_rxon_assoc(priv);
3167 }
3168
3169 }
3170
3171 static int iwl_mac_hw_scan(struct ieee80211_hw *hw, u8 *ssid, size_t ssid_len)
3172 {
3173 unsigned long flags;
3174 struct iwl_priv *priv = hw->priv;
3175 int ret;
3176
3177 IWL_DEBUG_MAC80211("enter\n");
3178
3179 mutex_lock(&priv->mutex);
3180 spin_lock_irqsave(&priv->lock, flags);
3181
3182 if (!iwl_is_ready_rf(priv)) {
3183 ret = -EIO;
3184 IWL_DEBUG_MAC80211("leave - not ready or exit pending\n");
3185 goto out_unlock;
3186 }
3187
3188 if (priv->iw_mode == NL80211_IFTYPE_AP) { /* APs don't scan */
3189 ret = -EIO;
3190 IWL_ERROR("ERROR: APs don't scan\n");
3191 goto out_unlock;
3192 }
3193
3194 /* We don't schedule scan within next_scan_jiffies period.
3195 * Avoid scanning during possible EAPOL exchange, return
3196 * success immediately.
3197 */
3198 if (priv->next_scan_jiffies &&
3199 time_after(priv->next_scan_jiffies, jiffies)) {
3200 IWL_DEBUG_SCAN("scan rejected: within next scan period\n");
3201 queue_work(priv->workqueue, &priv->scan_completed);
3202 ret = 0;
3203 goto out_unlock;
3204 }
3205
3206 /* if we just finished scan ask for delay */
3207 if (iwl_is_associated(priv) && priv->last_scan_jiffies &&
3208 time_after(priv->last_scan_jiffies + IWL_DELAY_NEXT_SCAN, jiffies)) {
3209 IWL_DEBUG_SCAN("scan rejected: within previous scan period\n");
3210 queue_work(priv->workqueue, &priv->scan_completed);
3211 ret = 0;
3212 goto out_unlock;
3213 }
3214
3215 if (ssid_len) {
3216 priv->one_direct_scan = 1;
3217 priv->direct_ssid_len = min_t(u8, ssid_len, IW_ESSID_MAX_SIZE);
3218 memcpy(priv->direct_ssid, ssid, priv->direct_ssid_len);
3219 } else {
3220 priv->one_direct_scan = 0;
3221 }
3222
3223 ret = iwl_scan_initiate(priv);
3224
3225 IWL_DEBUG_MAC80211("leave\n");
3226
3227 out_unlock:
3228 spin_unlock_irqrestore(&priv->lock, flags);
3229 mutex_unlock(&priv->mutex);
3230
3231 return ret;
3232 }
3233
3234 static void iwl4965_mac_update_tkip_key(struct ieee80211_hw *hw,
3235 struct ieee80211_key_conf *keyconf, const u8 *addr,
3236 u32 iv32, u16 *phase1key)
3237 {
3238 struct iwl_priv *priv = hw->priv;
3239 u8 sta_id = IWL_INVALID_STATION;
3240 unsigned long flags;
3241 __le16 key_flags = 0;
3242 int i;
3243 DECLARE_MAC_BUF(mac);
3244
3245 IWL_DEBUG_MAC80211("enter\n");
3246
3247 sta_id = iwl_find_station(priv, addr);
3248 if (sta_id == IWL_INVALID_STATION) {
3249 IWL_DEBUG_MAC80211("leave - %s not in station map.\n",
3250 print_mac(mac, addr));
3251 return;
3252 }
3253
3254 if (iwl_scan_cancel(priv)) {
3255 /* cancel scan failed, just live w/ bad key and rely
3256 briefly on SW decryption */
3257 return;
3258 }
3259
3260 key_flags |= (STA_KEY_FLG_TKIP | STA_KEY_FLG_MAP_KEY_MSK);
3261 key_flags |= cpu_to_le16(keyconf->keyidx << STA_KEY_FLG_KEYID_POS);
3262 key_flags &= ~STA_KEY_FLG_INVALID;
3263
3264 if (sta_id == priv->hw_params.bcast_sta_id)
3265 key_flags |= STA_KEY_MULTICAST_MSK;
3266
3267 spin_lock_irqsave(&priv->sta_lock, flags);
3268
3269 priv->stations[sta_id].sta.key.key_flags = key_flags;
3270 priv->stations[sta_id].sta.key.tkip_rx_tsc_byte2 = (u8) iv32;
3271
3272 for (i = 0; i < 5; i++)
3273 priv->stations[sta_id].sta.key.tkip_rx_ttak[i] =
3274 cpu_to_le16(phase1key[i]);
3275
3276 priv->stations[sta_id].sta.sta.modify_mask = STA_MODIFY_KEY_MASK;
3277 priv->stations[sta_id].sta.mode = STA_CONTROL_MODIFY_MSK;
3278
3279 iwl_send_add_sta(priv, &priv->stations[sta_id].sta, CMD_ASYNC);
3280
3281 spin_unlock_irqrestore(&priv->sta_lock, flags);
3282
3283 IWL_DEBUG_MAC80211("leave\n");
3284 }
3285
3286 static int iwl4965_mac_set_key(struct ieee80211_hw *hw, enum set_key_cmd cmd,
3287 const u8 *local_addr, const u8 *addr,
3288 struct ieee80211_key_conf *key)
3289 {
3290 struct iwl_priv *priv = hw->priv;
3291 DECLARE_MAC_BUF(mac);
3292 int ret = 0;
3293 u8 sta_id = IWL_INVALID_STATION;
3294 u8 is_default_wep_key = 0;
3295
3296 IWL_DEBUG_MAC80211("enter\n");
3297
3298 if (priv->hw_params.sw_crypto) {
3299 IWL_DEBUG_MAC80211("leave - hwcrypto disabled\n");
3300 return -EOPNOTSUPP;
3301 }
3302
3303 if (is_zero_ether_addr(addr))
3304 /* only support pairwise keys */
3305 return -EOPNOTSUPP;
3306
3307 sta_id = iwl_find_station(priv, addr);
3308 if (sta_id == IWL_INVALID_STATION) {
3309 IWL_DEBUG_MAC80211("leave - %s not in station map.\n",
3310 print_mac(mac, addr));
3311 return -EINVAL;
3312
3313 }
3314
3315 mutex_lock(&priv->mutex);
3316 iwl_scan_cancel_timeout(priv, 100);
3317 mutex_unlock(&priv->mutex);
3318
3319 /* If we are getting WEP group key and we didn't receive any key mapping
3320 * so far, we are in legacy wep mode (group key only), otherwise we are
3321 * in 1X mode.
3322 * In legacy wep mode, we use another host command to the uCode */
3323 if (key->alg == ALG_WEP && sta_id == priv->hw_params.bcast_sta_id &&
3324 priv->iw_mode != NL80211_IFTYPE_AP) {
3325 if (cmd == SET_KEY)
3326 is_default_wep_key = !priv->key_mapping_key;
3327 else
3328 is_default_wep_key =
3329 (key->hw_key_idx == HW_KEY_DEFAULT);
3330 }
3331
3332 switch (cmd) {
3333 case SET_KEY:
3334 if (is_default_wep_key)
3335 ret = iwl_set_default_wep_key(priv, key);
3336 else
3337 ret = iwl_set_dynamic_key(priv, key, sta_id);
3338
3339 IWL_DEBUG_MAC80211("enable hwcrypto key\n");
3340 break;
3341 case DISABLE_KEY:
3342 if (is_default_wep_key)
3343 ret = iwl_remove_default_wep_key(priv, key);
3344 else
3345 ret = iwl_remove_dynamic_key(priv, key, sta_id);
3346
3347 IWL_DEBUG_MAC80211("disable hwcrypto key\n");
3348 break;
3349 default:
3350 ret = -EINVAL;
3351 }
3352
3353 IWL_DEBUG_MAC80211("leave\n");
3354
3355 return ret;
3356 }
3357
3358 static int iwl4965_mac_conf_tx(struct ieee80211_hw *hw, u16 queue,
3359 const struct ieee80211_tx_queue_params *params)
3360 {
3361 struct iwl_priv *priv = hw->priv;
3362 unsigned long flags;
3363 int q;
3364
3365 IWL_DEBUG_MAC80211("enter\n");
3366
3367 if (!iwl_is_ready_rf(priv)) {
3368 IWL_DEBUG_MAC80211("leave - RF not ready\n");
3369 return -EIO;
3370 }
3371
3372 if (queue >= AC_NUM) {
3373 IWL_DEBUG_MAC80211("leave - queue >= AC_NUM %d\n", queue);
3374 return 0;
3375 }
3376
3377 if (!priv->qos_data.qos_enable) {
3378 priv->qos_data.qos_active = 0;
3379 IWL_DEBUG_MAC80211("leave - qos not enabled\n");
3380 return 0;
3381 }
3382 q = AC_NUM - 1 - queue;
3383
3384 spin_lock_irqsave(&priv->lock, flags);
3385
3386 priv->qos_data.def_qos_parm.ac[q].cw_min = cpu_to_le16(params->cw_min);
3387 priv->qos_data.def_qos_parm.ac[q].cw_max = cpu_to_le16(params->cw_max);
3388 priv->qos_data.def_qos_parm.ac[q].aifsn = params->aifs;
3389 priv->qos_data.def_qos_parm.ac[q].edca_txop =
3390 cpu_to_le16((params->txop * 32));
3391
3392 priv->qos_data.def_qos_parm.ac[q].reserved1 = 0;
3393 priv->qos_data.qos_active = 1;
3394
3395 if (priv->iw_mode == NL80211_IFTYPE_AP)
3396 iwl_activate_qos(priv, 1);
3397 else if (priv->assoc_id && iwl_is_associated(priv))
3398 iwl_activate_qos(priv, 0);
3399
3400 spin_unlock_irqrestore(&priv->lock, flags);
3401
3402 IWL_DEBUG_MAC80211("leave\n");
3403 return 0;
3404 }
3405
3406 static int iwl4965_mac_ampdu_action(struct ieee80211_hw *hw,
3407 enum ieee80211_ampdu_mlme_action action,
3408 struct ieee80211_sta *sta, u16 tid, u16 *ssn)
3409 {
3410 struct iwl_priv *priv = hw->priv;
3411 DECLARE_MAC_BUF(mac);
3412
3413 IWL_DEBUG_HT("A-MPDU action on addr %s tid %d\n",
3414 print_mac(mac, sta->addr), tid);
3415
3416 if (!(priv->cfg->sku & IWL_SKU_N))
3417 return -EACCES;
3418
3419 switch (action) {
3420 case IEEE80211_AMPDU_RX_START:
3421 IWL_DEBUG_HT("start Rx\n");
3422 return iwl_rx_agg_start(priv, sta->addr, tid, *ssn);
3423 case IEEE80211_AMPDU_RX_STOP:
3424 IWL_DEBUG_HT("stop Rx\n");
3425 return iwl_rx_agg_stop(priv, sta->addr, tid);
3426 case IEEE80211_AMPDU_TX_START:
3427 IWL_DEBUG_HT("start Tx\n");
3428 return iwl_tx_agg_start(priv, sta->addr, tid, ssn);
3429 case IEEE80211_AMPDU_TX_STOP:
3430 IWL_DEBUG_HT("stop Tx\n");
3431 return iwl_tx_agg_stop(priv, sta->addr, tid);
3432 default:
3433 IWL_DEBUG_HT("unknown\n");
3434 return -EINVAL;
3435 break;
3436 }
3437 return 0;
3438 }
3439 static int iwl4965_mac_get_tx_stats(struct ieee80211_hw *hw,
3440 struct ieee80211_tx_queue_stats *stats)
3441 {
3442 struct iwl_priv *priv = hw->priv;
3443 int i, avail;
3444 struct iwl_tx_queue *txq;
3445 struct iwl_queue *q;
3446 unsigned long flags;
3447
3448 IWL_DEBUG_MAC80211("enter\n");
3449
3450 if (!iwl_is_ready_rf(priv)) {
3451 IWL_DEBUG_MAC80211("leave - RF not ready\n");
3452 return -EIO;
3453 }
3454
3455 spin_lock_irqsave(&priv->lock, flags);
3456
3457 for (i = 0; i < AC_NUM; i++) {
3458 txq = &priv->txq[i];
3459 q = &txq->q;
3460 avail = iwl_queue_space(q);
3461
3462 stats[i].len = q->n_window - avail;
3463 stats[i].limit = q->n_window - q->high_mark;
3464 stats[i].count = q->n_window;
3465
3466 }
3467 spin_unlock_irqrestore(&priv->lock, flags);
3468
3469 IWL_DEBUG_MAC80211("leave\n");
3470
3471 return 0;
3472 }
3473
3474 static int iwl4965_mac_get_stats(struct ieee80211_hw *hw,
3475 struct ieee80211_low_level_stats *stats)
3476 {
3477 struct iwl_priv *priv = hw->priv;
3478
3479 priv = hw->priv;
3480 IWL_DEBUG_MAC80211("enter\n");
3481 IWL_DEBUG_MAC80211("leave\n");
3482
3483 return 0;
3484 }
3485
3486 static void iwl4965_mac_reset_tsf(struct ieee80211_hw *hw)
3487 {
3488 struct iwl_priv *priv = hw->priv;
3489 unsigned long flags;
3490
3491 mutex_lock(&priv->mutex);
3492 IWL_DEBUG_MAC80211("enter\n");
3493
3494 spin_lock_irqsave(&priv->lock, flags);
3495 memset(&priv->current_ht_config, 0, sizeof(struct iwl_ht_info));
3496 spin_unlock_irqrestore(&priv->lock, flags);
3497
3498 iwl_reset_qos(priv);
3499
3500 spin_lock_irqsave(&priv->lock, flags);
3501 priv->assoc_id = 0;
3502 priv->assoc_capability = 0;
3503 priv->assoc_station_added = 0;
3504
3505 /* new association get rid of ibss beacon skb */
3506 if (priv->ibss_beacon)
3507 dev_kfree_skb(priv->ibss_beacon);
3508
3509 priv->ibss_beacon = NULL;
3510
3511 priv->beacon_int = priv->hw->conf.beacon_int;
3512 priv->timestamp = 0;
3513 if ((priv->iw_mode == NL80211_IFTYPE_STATION))
3514 priv->beacon_int = 0;
3515
3516 spin_unlock_irqrestore(&priv->lock, flags);
3517
3518 if (!iwl_is_ready_rf(priv)) {
3519 IWL_DEBUG_MAC80211("leave - not ready\n");
3520 mutex_unlock(&priv->mutex);
3521 return;
3522 }
3523
3524 /* we are restarting association process
3525 * clear RXON_FILTER_ASSOC_MSK bit
3526 */
3527 if (priv->iw_mode != NL80211_IFTYPE_AP) {
3528 iwl_scan_cancel_timeout(priv, 100);
3529 priv->staging_rxon.filter_flags &= ~RXON_FILTER_ASSOC_MSK;
3530 iwl4965_commit_rxon(priv);
3531 }
3532
3533 iwl_power_update_mode(priv, 0);
3534
3535 /* Per mac80211.h: This is only used in IBSS mode... */
3536 if (priv->iw_mode != NL80211_IFTYPE_ADHOC) {
3537
3538 /* switch to CAM during association period.
3539 * the ucode will block any association/authentication
3540 * frome during assiciation period if it can not hear
3541 * the AP because of PM. the timer enable PM back is
3542 * association do not complete
3543 */
3544 if (priv->hw->conf.channel->flags & (IEEE80211_CHAN_PASSIVE_SCAN |
3545 IEEE80211_CHAN_RADAR))
3546 iwl_power_disable_management(priv, 3000);
3547
3548 IWL_DEBUG_MAC80211("leave - not in IBSS\n");
3549 mutex_unlock(&priv->mutex);
3550 return;
3551 }
3552
3553 iwl4965_set_rate(priv);
3554
3555 mutex_unlock(&priv->mutex);
3556
3557 IWL_DEBUG_MAC80211("leave\n");
3558 }
3559
3560 static int iwl4965_mac_beacon_update(struct ieee80211_hw *hw, struct sk_buff *skb)
3561 {
3562 struct iwl_priv *priv = hw->priv;
3563 unsigned long flags;
3564 __le64 timestamp;
3565
3566 mutex_lock(&priv->mutex);
3567 IWL_DEBUG_MAC80211("enter\n");
3568
3569 if (!iwl_is_ready_rf(priv)) {
3570 IWL_DEBUG_MAC80211("leave - RF not ready\n");
3571 mutex_unlock(&priv->mutex);
3572 return -EIO;
3573 }
3574
3575 if (priv->iw_mode != NL80211_IFTYPE_ADHOC) {
3576 IWL_DEBUG_MAC80211("leave - not IBSS\n");
3577 mutex_unlock(&priv->mutex);
3578 return -EIO;
3579 }
3580
3581 spin_lock_irqsave(&priv->lock, flags);
3582
3583 if (priv->ibss_beacon)
3584 dev_kfree_skb(priv->ibss_beacon);
3585
3586 priv->ibss_beacon = skb;
3587
3588 priv->assoc_id = 0;
3589 timestamp = ((struct ieee80211_mgmt *)skb->data)->u.beacon.timestamp;
3590 priv->timestamp = le64_to_cpu(timestamp);
3591
3592 IWL_DEBUG_MAC80211("leave\n");
3593 spin_unlock_irqrestore(&priv->lock, flags);
3594
3595 iwl_reset_qos(priv);
3596
3597 iwl4965_post_associate(priv);
3598
3599 mutex_unlock(&priv->mutex);
3600
3601 return 0;
3602 }
3603
3604 /*****************************************************************************
3605 *
3606 * sysfs attributes
3607 *
3608 *****************************************************************************/
3609
3610 #ifdef CONFIG_IWLWIFI_DEBUG
3611
3612 /*
3613 * The following adds a new attribute to the sysfs representation
3614 * of this device driver (i.e. a new file in /sys/bus/pci/drivers/iwl/)
3615 * used for controlling the debug level.
3616 *
3617 * See the level definitions in iwl for details.
3618 */
3619
3620 static ssize_t show_debug_level(struct device *d,
3621 struct device_attribute *attr, char *buf)
3622 {
3623 struct iwl_priv *priv = d->driver_data;
3624
3625 return sprintf(buf, "0x%08X\n", priv->debug_level);
3626 }
3627 static ssize_t store_debug_level(struct device *d,
3628 struct device_attribute *attr,
3629 const char *buf, size_t count)
3630 {
3631 struct iwl_priv *priv = d->driver_data;
3632 unsigned long val;
3633 int ret;
3634
3635 ret = strict_strtoul(buf, 0, &val);
3636 if (ret)
3637 printk(KERN_INFO DRV_NAME
3638 ": %s is not in hex or decimal form.\n", buf);
3639 else
3640 priv->debug_level = val;
3641
3642 return strnlen(buf, count);
3643 }
3644
3645 static DEVICE_ATTR(debug_level, S_IWUSR | S_IRUGO,
3646 show_debug_level, store_debug_level);
3647
3648
3649 #endif /* CONFIG_IWLWIFI_DEBUG */
3650
3651
3652 static ssize_t show_version(struct device *d,
3653 struct device_attribute *attr, char *buf)
3654 {
3655 struct iwl_priv *priv = d->driver_data;
3656 struct iwl_alive_resp *palive = &priv->card_alive;
3657 ssize_t pos = 0;
3658 u16 eeprom_ver;
3659
3660 if (palive->is_valid)
3661 pos += sprintf(buf + pos,
3662 "fw version: 0x%01X.0x%01X.0x%01X.0x%01X\n"
3663 "fw type: 0x%01X 0x%01X\n",
3664 palive->ucode_major, palive->ucode_minor,
3665 palive->sw_rev[0], palive->sw_rev[1],
3666 palive->ver_type, palive->ver_subtype);
3667 else
3668 pos += sprintf(buf + pos, "fw not loaded\n");
3669
3670 if (priv->eeprom) {
3671 eeprom_ver = iwl_eeprom_query16(priv, EEPROM_VERSION);
3672 pos += sprintf(buf + pos, "EEPROM version: 0x%x\n",
3673 eeprom_ver);
3674 } else {
3675 pos += sprintf(buf + pos, "EEPROM not initialzed\n");
3676 }
3677
3678 return pos;
3679 }
3680
3681 static DEVICE_ATTR(version, S_IWUSR | S_IRUGO, show_version, NULL);
3682
3683 static ssize_t show_temperature(struct device *d,
3684 struct device_attribute *attr, char *buf)
3685 {
3686 struct iwl_priv *priv = (struct iwl_priv *)d->driver_data;
3687
3688 if (!iwl_is_alive(priv))
3689 return -EAGAIN;
3690
3691 return sprintf(buf, "%d\n", priv->temperature);
3692 }
3693
3694 static DEVICE_ATTR(temperature, S_IRUGO, show_temperature, NULL);
3695
3696 static ssize_t show_tx_power(struct device *d,
3697 struct device_attribute *attr, char *buf)
3698 {
3699 struct iwl_priv *priv = (struct iwl_priv *)d->driver_data;
3700 return sprintf(buf, "%d\n", priv->tx_power_user_lmt);
3701 }
3702
3703 static ssize_t store_tx_power(struct device *d,
3704 struct device_attribute *attr,
3705 const char *buf, size_t count)
3706 {
3707 struct iwl_priv *priv = (struct iwl_priv *)d->driver_data;
3708 unsigned long val;
3709 int ret;
3710
3711 ret = strict_strtoul(buf, 10, &val);
3712 if (ret)
3713 printk(KERN_INFO DRV_NAME
3714 ": %s is not in decimal form.\n", buf);
3715 else
3716 iwl_set_tx_power(priv, val, false);
3717
3718 return count;
3719 }
3720
3721 static DEVICE_ATTR(tx_power, S_IWUSR | S_IRUGO, show_tx_power, store_tx_power);
3722
3723 static ssize_t show_flags(struct device *d,
3724 struct device_attribute *attr, char *buf)
3725 {
3726 struct iwl_priv *priv = (struct iwl_priv *)d->driver_data;
3727
3728 return sprintf(buf, "0x%04X\n", priv->active_rxon.flags);
3729 }
3730
3731 static ssize_t store_flags(struct device *d,
3732 struct device_attribute *attr,
3733 const char *buf, size_t count)
3734 {
3735 struct iwl_priv *priv = (struct iwl_priv *)d->driver_data;
3736 unsigned long val;
3737 u32 flags;
3738 int ret = strict_strtoul(buf, 0, &val);
3739 if (ret)
3740 return ret;
3741 flags = (u32)val;
3742
3743 mutex_lock(&priv->mutex);
3744 if (le32_to_cpu(priv->staging_rxon.flags) != flags) {
3745 /* Cancel any currently running scans... */
3746 if (iwl_scan_cancel_timeout(priv, 100))
3747 IWL_WARNING("Could not cancel scan.\n");
3748 else {
3749 IWL_DEBUG_INFO("Commit rxon.flags = 0x%04X\n", flags);
3750 priv->staging_rxon.flags = cpu_to_le32(flags);
3751 iwl4965_commit_rxon(priv);
3752 }
3753 }
3754 mutex_unlock(&priv->mutex);
3755
3756 return count;
3757 }
3758
3759 static DEVICE_ATTR(flags, S_IWUSR | S_IRUGO, show_flags, store_flags);
3760
3761 static ssize_t show_filter_flags(struct device *d,
3762 struct device_attribute *attr, char *buf)
3763 {
3764 struct iwl_priv *priv = (struct iwl_priv *)d->driver_data;
3765
3766 return sprintf(buf, "0x%04X\n",
3767 le32_to_cpu(priv->active_rxon.filter_flags));
3768 }
3769
3770 static ssize_t store_filter_flags(struct device *d,
3771 struct device_attribute *attr,
3772 const char *buf, size_t count)
3773 {
3774 struct iwl_priv *priv = (struct iwl_priv *)d->driver_data;
3775 unsigned long val;
3776 u32 filter_flags;
3777 int ret = strict_strtoul(buf, 0, &val);
3778 if (ret)
3779 return ret;
3780 filter_flags = (u32)val;
3781
3782 mutex_lock(&priv->mutex);
3783 if (le32_to_cpu(priv->staging_rxon.filter_flags) != filter_flags) {
3784 /* Cancel any currently running scans... */
3785 if (iwl_scan_cancel_timeout(priv, 100))
3786 IWL_WARNING("Could not cancel scan.\n");
3787 else {
3788 IWL_DEBUG_INFO("Committing rxon.filter_flags = "
3789 "0x%04X\n", filter_flags);
3790 priv->staging_rxon.filter_flags =
3791 cpu_to_le32(filter_flags);
3792 iwl4965_commit_rxon(priv);
3793 }
3794 }
3795 mutex_unlock(&priv->mutex);
3796
3797 return count;
3798 }
3799
3800 static DEVICE_ATTR(filter_flags, S_IWUSR | S_IRUGO, show_filter_flags,
3801 store_filter_flags);
3802
3803 #ifdef CONFIG_IWLAGN_SPECTRUM_MEASUREMENT
3804
3805 static ssize_t show_measurement(struct device *d,
3806 struct device_attribute *attr, char *buf)
3807 {
3808 struct iwl_priv *priv = dev_get_drvdata(d);
3809 struct iwl4965_spectrum_notification measure_report;
3810 u32 size = sizeof(measure_report), len = 0, ofs = 0;
3811 u8 *data = (u8 *)&measure_report;
3812 unsigned long flags;
3813
3814 spin_lock_irqsave(&priv->lock, flags);
3815 if (!(priv->measurement_status & MEASUREMENT_READY)) {
3816 spin_unlock_irqrestore(&priv->lock, flags);
3817 return 0;
3818 }
3819 memcpy(&measure_report, &priv->measure_report, size);
3820 priv->measurement_status = 0;
3821 spin_unlock_irqrestore(&priv->lock, flags);
3822
3823 while (size && (PAGE_SIZE - len)) {
3824 hex_dump_to_buffer(data + ofs, size, 16, 1, buf + len,
3825 PAGE_SIZE - len, 1);
3826 len = strlen(buf);
3827 if (PAGE_SIZE - len)
3828 buf[len++] = '\n';
3829
3830 ofs += 16;
3831 size -= min(size, 16U);
3832 }
3833
3834 return len;
3835 }
3836
3837 static ssize_t store_measurement(struct device *d,
3838 struct device_attribute *attr,
3839 const char *buf, size_t count)
3840 {
3841 struct iwl_priv *priv = dev_get_drvdata(d);
3842 struct ieee80211_measurement_params params = {
3843 .channel = le16_to_cpu(priv->active_rxon.channel),
3844 .start_time = cpu_to_le64(priv->last_tsf),
3845 .duration = cpu_to_le16(1),
3846 };
3847 u8 type = IWL_MEASURE_BASIC;
3848 u8 buffer[32];
3849 u8 channel;
3850
3851 if (count) {
3852 char *p = buffer;
3853 strncpy(buffer, buf, min(sizeof(buffer), count));
3854 channel = simple_strtoul(p, NULL, 0);
3855 if (channel)
3856 params.channel = channel;
3857
3858 p = buffer;
3859 while (*p && *p != ' ')
3860 p++;
3861 if (*p)
3862 type = simple_strtoul(p + 1, NULL, 0);
3863 }
3864
3865 IWL_DEBUG_INFO("Invoking measurement of type %d on "
3866 "channel %d (for '%s')\n", type, params.channel, buf);
3867 iwl4965_get_measurement(priv, &params, type);
3868
3869 return count;
3870 }
3871
3872 static DEVICE_ATTR(measurement, S_IRUSR | S_IWUSR,
3873 show_measurement, store_measurement);
3874 #endif /* CONFIG_IWLAGN_SPECTRUM_MEASUREMENT */
3875
3876 static ssize_t store_retry_rate(struct device *d,
3877 struct device_attribute *attr,
3878 const char *buf, size_t count)
3879 {
3880 struct iwl_priv *priv = dev_get_drvdata(d);
3881 long val;
3882 int ret = strict_strtol(buf, 10, &val);
3883 if (!ret)
3884 return ret;
3885
3886 priv->retry_rate = (val > 0) ? val : 1;
3887
3888 return count;
3889 }
3890
3891 static ssize_t show_retry_rate(struct device *d,
3892 struct device_attribute *attr, char *buf)
3893 {
3894 struct iwl_priv *priv = dev_get_drvdata(d);
3895 return sprintf(buf, "%d", priv->retry_rate);
3896 }
3897
3898 static DEVICE_ATTR(retry_rate, S_IWUSR | S_IRUSR, show_retry_rate,
3899 store_retry_rate);
3900
3901 static ssize_t store_power_level(struct device *d,
3902 struct device_attribute *attr,
3903 const char *buf, size_t count)
3904 {
3905 struct iwl_priv *priv = dev_get_drvdata(d);
3906 int ret;
3907 unsigned long mode;
3908
3909
3910 mutex_lock(&priv->mutex);
3911
3912 if (!iwl_is_ready(priv)) {
3913 ret = -EAGAIN;
3914 goto out;
3915 }
3916
3917 ret = strict_strtoul(buf, 10, &mode);
3918 if (ret)
3919 goto out;
3920
3921 ret = iwl_power_set_user_mode(priv, mode);
3922 if (ret) {
3923 IWL_DEBUG_MAC80211("failed setting power mode.\n");
3924 goto out;
3925 }
3926 ret = count;
3927
3928 out:
3929 mutex_unlock(&priv->mutex);
3930 return ret;
3931 }
3932
3933 static ssize_t show_power_level(struct device *d,
3934 struct device_attribute *attr, char *buf)
3935 {
3936 struct iwl_priv *priv = dev_get_drvdata(d);
3937 int mode = priv->power_data.user_power_setting;
3938 int system = priv->power_data.system_power_setting;
3939 int level = priv->power_data.power_mode;
3940 char *p = buf;
3941
3942 switch (system) {
3943 case IWL_POWER_SYS_AUTO:
3944 p += sprintf(p, "SYSTEM:auto");
3945 break;
3946 case IWL_POWER_SYS_AC:
3947 p += sprintf(p, "SYSTEM:ac");
3948 break;
3949 case IWL_POWER_SYS_BATTERY:
3950 p += sprintf(p, "SYSTEM:battery");
3951 break;
3952 }
3953
3954 p += sprintf(p, "\tMODE:%s", (mode < IWL_POWER_AUTO)?"fixed":"auto");
3955 p += sprintf(p, "\tINDEX:%d", level);
3956 p += sprintf(p, "\n");
3957 return p - buf + 1;
3958 }
3959
3960 static DEVICE_ATTR(power_level, S_IWUSR | S_IRUSR, show_power_level,
3961 store_power_level);
3962
3963 static ssize_t show_channels(struct device *d,
3964 struct device_attribute *attr, char *buf)
3965 {
3966
3967 struct iwl_priv *priv = dev_get_drvdata(d);
3968 struct ieee80211_channel *channels = NULL;
3969 const struct ieee80211_supported_band *supp_band = NULL;
3970 int len = 0, i;
3971 int count = 0;
3972
3973 if (!test_bit(STATUS_GEO_CONFIGURED, &priv->status))
3974 return -EAGAIN;
3975
3976 supp_band = iwl_get_hw_mode(priv, IEEE80211_BAND_2GHZ);
3977 channels = supp_band->channels;
3978 count = supp_band->n_channels;
3979
3980 len += sprintf(&buf[len],
3981 "Displaying %d channels in 2.4GHz band "
3982 "(802.11bg):\n", count);
3983
3984 for (i = 0; i < count; i++)
3985 len += sprintf(&buf[len], "%d: %ddBm: BSS%s%s, %s.\n",
3986 ieee80211_frequency_to_channel(
3987 channels[i].center_freq),
3988 channels[i].max_power,
3989 channels[i].flags & IEEE80211_CHAN_RADAR ?
3990 " (IEEE 802.11h required)" : "",
3991 (!(channels[i].flags & IEEE80211_CHAN_NO_IBSS)
3992 || (channels[i].flags &
3993 IEEE80211_CHAN_RADAR)) ? "" :
3994 ", IBSS",
3995 channels[i].flags &
3996 IEEE80211_CHAN_PASSIVE_SCAN ?
3997 "passive only" : "active/passive");
3998
3999 supp_band = iwl_get_hw_mode(priv, IEEE80211_BAND_5GHZ);
4000 channels = supp_band->channels;
4001 count = supp_band->n_channels;
4002
4003 len += sprintf(&buf[len], "Displaying %d channels in 5.2GHz band "
4004 "(802.11a):\n", count);
4005
4006 for (i = 0; i < count; i++)
4007 len += sprintf(&buf[len], "%d: %ddBm: BSS%s%s, %s.\n",
4008 ieee80211_frequency_to_channel(
4009 channels[i].center_freq),
4010 channels[i].max_power,
4011 channels[i].flags & IEEE80211_CHAN_RADAR ?
4012 " (IEEE 802.11h required)" : "",
4013 ((channels[i].flags & IEEE80211_CHAN_NO_IBSS)
4014 || (channels[i].flags &
4015 IEEE80211_CHAN_RADAR)) ? "" :
4016 ", IBSS",
4017 channels[i].flags &
4018 IEEE80211_CHAN_PASSIVE_SCAN ?
4019 "passive only" : "active/passive");
4020
4021 return len;
4022 }
4023
4024 static DEVICE_ATTR(channels, S_IRUSR, show_channels, NULL);
4025
4026 static ssize_t show_statistics(struct device *d,
4027 struct device_attribute *attr, char *buf)
4028 {
4029 struct iwl_priv *priv = dev_get_drvdata(d);
4030 u32 size = sizeof(struct iwl_notif_statistics);
4031 u32 len = 0, ofs = 0;
4032 u8 *data = (u8 *)&priv->statistics;
4033 int rc = 0;
4034
4035 if (!iwl_is_alive(priv))
4036 return -EAGAIN;
4037
4038 mutex_lock(&priv->mutex);
4039 rc = iwl_send_statistics_request(priv, 0);
4040 mutex_unlock(&priv->mutex);
4041
4042 if (rc) {
4043 len = sprintf(buf,
4044 "Error sending statistics request: 0x%08X\n", rc);
4045 return len;
4046 }
4047
4048 while (size && (PAGE_SIZE - len)) {
4049 hex_dump_to_buffer(data + ofs, size, 16, 1, buf + len,
4050 PAGE_SIZE - len, 1);
4051 len = strlen(buf);
4052 if (PAGE_SIZE - len)
4053 buf[len++] = '\n';
4054
4055 ofs += 16;
4056 size -= min(size, 16U);
4057 }
4058
4059 return len;
4060 }
4061
4062 static DEVICE_ATTR(statistics, S_IRUGO, show_statistics, NULL);
4063
4064 static ssize_t show_status(struct device *d,
4065 struct device_attribute *attr, char *buf)
4066 {
4067 struct iwl_priv *priv = (struct iwl_priv *)d->driver_data;
4068 if (!iwl_is_alive(priv))
4069 return -EAGAIN;
4070 return sprintf(buf, "0x%08x\n", (int)priv->status);
4071 }
4072
4073 static DEVICE_ATTR(status, S_IRUGO, show_status, NULL);
4074
4075 /*****************************************************************************
4076 *
4077 * driver setup and teardown
4078 *
4079 *****************************************************************************/
4080
4081 static void iwl_setup_deferred_work(struct iwl_priv *priv)
4082 {
4083 priv->workqueue = create_workqueue(DRV_NAME);
4084
4085 init_waitqueue_head(&priv->wait_command_queue);
4086
4087 INIT_WORK(&priv->up, iwl4965_bg_up);
4088 INIT_WORK(&priv->restart, iwl4965_bg_restart);
4089 INIT_WORK(&priv->rx_replenish, iwl4965_bg_rx_replenish);
4090 INIT_WORK(&priv->rf_kill, iwl4965_bg_rf_kill);
4091 INIT_WORK(&priv->beacon_update, iwl4965_bg_beacon_update);
4092 INIT_WORK(&priv->set_monitor, iwl4965_bg_set_monitor);
4093 INIT_WORK(&priv->run_time_calib_work, iwl_bg_run_time_calib_work);
4094 INIT_DELAYED_WORK(&priv->init_alive_start, iwl_bg_init_alive_start);
4095 INIT_DELAYED_WORK(&priv->alive_start, iwl_bg_alive_start);
4096
4097 iwl_setup_scan_deferred_work(priv);
4098 iwl_setup_power_deferred_work(priv);
4099
4100 if (priv->cfg->ops->lib->setup_deferred_work)
4101 priv->cfg->ops->lib->setup_deferred_work(priv);
4102
4103 init_timer(&priv->statistics_periodic);
4104 priv->statistics_periodic.data = (unsigned long)priv;
4105 priv->statistics_periodic.function = iwl4965_bg_statistics_periodic;
4106
4107 tasklet_init(&priv->irq_tasklet, (void (*)(unsigned long))
4108 iwl4965_irq_tasklet, (unsigned long)priv);
4109 }
4110
4111 static void iwl_cancel_deferred_work(struct iwl_priv *priv)
4112 {
4113 if (priv->cfg->ops->lib->cancel_deferred_work)
4114 priv->cfg->ops->lib->cancel_deferred_work(priv);
4115
4116 cancel_delayed_work_sync(&priv->init_alive_start);
4117 cancel_delayed_work(&priv->scan_check);
4118 cancel_delayed_work_sync(&priv->set_power_save);
4119 cancel_delayed_work(&priv->alive_start);
4120 cancel_work_sync(&priv->beacon_update);
4121 del_timer_sync(&priv->statistics_periodic);
4122 }
4123
4124 static struct attribute *iwl4965_sysfs_entries[] = {
4125 &dev_attr_channels.attr,
4126 &dev_attr_flags.attr,
4127 &dev_attr_filter_flags.attr,
4128 #ifdef CONFIG_IWLAGN_SPECTRUM_MEASUREMENT
4129 &dev_attr_measurement.attr,
4130 #endif
4131 &dev_attr_power_level.attr,
4132 &dev_attr_retry_rate.attr,
4133 &dev_attr_statistics.attr,
4134 &dev_attr_status.attr,
4135 &dev_attr_temperature.attr,
4136 &dev_attr_tx_power.attr,
4137 #ifdef CONFIG_IWLWIFI_DEBUG
4138 &dev_attr_debug_level.attr,
4139 #endif
4140 &dev_attr_version.attr,
4141
4142 NULL
4143 };
4144
4145 static struct attribute_group iwl4965_attribute_group = {
4146 .name = NULL, /* put in device directory */
4147 .attrs = iwl4965_sysfs_entries,
4148 };
4149
4150 static struct ieee80211_ops iwl4965_hw_ops = {
4151 .tx = iwl4965_mac_tx,
4152 .start = iwl4965_mac_start,
4153 .stop = iwl4965_mac_stop,
4154 .add_interface = iwl4965_mac_add_interface,
4155 .remove_interface = iwl4965_mac_remove_interface,
4156 .config = iwl4965_mac_config,
4157 .config_interface = iwl4965_mac_config_interface,
4158 .configure_filter = iwl4965_configure_filter,
4159 .set_key = iwl4965_mac_set_key,
4160 .update_tkip_key = iwl4965_mac_update_tkip_key,
4161 .get_stats = iwl4965_mac_get_stats,
4162 .get_tx_stats = iwl4965_mac_get_tx_stats,
4163 .conf_tx = iwl4965_mac_conf_tx,
4164 .reset_tsf = iwl4965_mac_reset_tsf,
4165 .bss_info_changed = iwl4965_bss_info_changed,
4166 .ampdu_action = iwl4965_mac_ampdu_action,
4167 .hw_scan = iwl_mac_hw_scan
4168 };
4169
4170 static int iwl4965_pci_probe(struct pci_dev *pdev, const struct pci_device_id *ent)
4171 {
4172 int err = 0;
4173 struct iwl_priv *priv;
4174 struct ieee80211_hw *hw;
4175 struct iwl_cfg *cfg = (struct iwl_cfg *)(ent->driver_data);
4176 unsigned long flags;
4177 DECLARE_MAC_BUF(mac);
4178
4179 /************************
4180 * 1. Allocating HW data
4181 ************************/
4182
4183 /* Disabling hardware scan means that mac80211 will perform scans
4184 * "the hard way", rather than using device's scan. */
4185 if (cfg->mod_params->disable_hw_scan) {
4186 if (cfg->mod_params->debug & IWL_DL_INFO)
4187 dev_printk(KERN_DEBUG, &(pdev->dev),
4188 "Disabling hw_scan\n");
4189 iwl4965_hw_ops.hw_scan = NULL;
4190 }
4191
4192 hw = iwl_alloc_all(cfg, &iwl4965_hw_ops);
4193 if (!hw) {
4194 err = -ENOMEM;
4195 goto out;
4196 }
4197 priv = hw->priv;
4198 /* At this point both hw and priv are allocated. */
4199
4200 SET_IEEE80211_DEV(hw, &pdev->dev);
4201
4202 IWL_DEBUG_INFO("*** LOAD DRIVER ***\n");
4203 priv->cfg = cfg;
4204 priv->pci_dev = pdev;
4205
4206 #ifdef CONFIG_IWLWIFI_DEBUG
4207 priv->debug_level = priv->cfg->mod_params->debug;
4208 atomic_set(&priv->restrict_refcnt, 0);
4209 #endif
4210
4211 /**************************
4212 * 2. Initializing PCI bus
4213 **************************/
4214 if (pci_enable_device(pdev)) {
4215 err = -ENODEV;
4216 goto out_ieee80211_free_hw;
4217 }
4218
4219 pci_set_master(pdev);
4220
4221 err = pci_set_dma_mask(pdev, DMA_BIT_MASK(36));
4222 if (!err)
4223 err = pci_set_consistent_dma_mask(pdev, DMA_BIT_MASK(36));
4224 if (err) {
4225 err = pci_set_dma_mask(pdev, DMA_BIT_MASK(32));
4226 if (!err)
4227 err = pci_set_consistent_dma_mask(pdev, DMA_BIT_MASK(32));
4228 /* both attempts failed: */
4229 if (err) {
4230 printk(KERN_WARNING "%s: No suitable DMA available.\n",
4231 DRV_NAME);
4232 goto out_pci_disable_device;
4233 }
4234 }
4235
4236 err = pci_request_regions(pdev, DRV_NAME);
4237 if (err)
4238 goto out_pci_disable_device;
4239
4240 pci_set_drvdata(pdev, priv);
4241
4242
4243 /***********************
4244 * 3. Read REV register
4245 ***********************/
4246 priv->hw_base = pci_iomap(pdev, 0, 0);
4247 if (!priv->hw_base) {
4248 err = -ENODEV;
4249 goto out_pci_release_regions;
4250 }
4251
4252 IWL_DEBUG_INFO("pci_resource_len = 0x%08llx\n",
4253 (unsigned long long) pci_resource_len(pdev, 0));
4254 IWL_DEBUG_INFO("pci_resource_base = %p\n", priv->hw_base);
4255
4256 iwl_hw_detect(priv);
4257 printk(KERN_INFO DRV_NAME
4258 ": Detected Intel Wireless WiFi Link %s REV=0x%X\n",
4259 priv->cfg->name, priv->hw_rev);
4260
4261 /* We disable the RETRY_TIMEOUT register (0x41) to keep
4262 * PCI Tx retries from interfering with C3 CPU state */
4263 pci_write_config_byte(pdev, PCI_CFG_RETRY_TIMEOUT, 0x00);
4264
4265 /* amp init */
4266 err = priv->cfg->ops->lib->apm_ops.init(priv);
4267 if (err < 0) {
4268 IWL_DEBUG_INFO("Failed to init APMG\n");
4269 goto out_iounmap;
4270 }
4271 /*****************
4272 * 4. Read EEPROM
4273 *****************/
4274 /* Read the EEPROM */
4275 err = iwl_eeprom_init(priv);
4276 if (err) {
4277 IWL_ERROR("Unable to init EEPROM\n");
4278 goto out_iounmap;
4279 }
4280 err = iwl_eeprom_check_version(priv);
4281 if (err)
4282 goto out_iounmap;
4283
4284 /* extract MAC Address */
4285 iwl_eeprom_get_mac(priv, priv->mac_addr);
4286 IWL_DEBUG_INFO("MAC address: %s\n", print_mac(mac, priv->mac_addr));
4287 SET_IEEE80211_PERM_ADDR(priv->hw, priv->mac_addr);
4288
4289 /************************
4290 * 5. Setup HW constants
4291 ************************/
4292 if (iwl_set_hw_params(priv)) {
4293 IWL_ERROR("failed to set hw parameters\n");
4294 goto out_free_eeprom;
4295 }
4296
4297 /*******************
4298 * 6. Setup priv
4299 *******************/
4300
4301 err = iwl_init_drv(priv);
4302 if (err)
4303 goto out_free_eeprom;
4304 /* At this point both hw and priv are initialized. */
4305
4306 /**********************************
4307 * 7. Initialize module parameters
4308 **********************************/
4309
4310 /* Disable radio (SW RF KILL) via parameter when loading driver */
4311 if (priv->cfg->mod_params->disable) {
4312 set_bit(STATUS_RF_KILL_SW, &priv->status);
4313 IWL_DEBUG_INFO("Radio disabled.\n");
4314 }
4315
4316 /********************
4317 * 8. Setup services
4318 ********************/
4319 spin_lock_irqsave(&priv->lock, flags);
4320 iwl4965_disable_interrupts(priv);
4321 spin_unlock_irqrestore(&priv->lock, flags);
4322
4323 err = sysfs_create_group(&pdev->dev.kobj, &iwl4965_attribute_group);
4324 if (err) {
4325 IWL_ERROR("failed to create sysfs device attributes\n");
4326 goto out_uninit_drv;
4327 }
4328
4329
4330 iwl_setup_deferred_work(priv);
4331 iwl_setup_rx_handlers(priv);
4332
4333 /********************
4334 * 9. Conclude
4335 ********************/
4336 pci_save_state(pdev);
4337 pci_disable_device(pdev);
4338
4339 /**********************************
4340 * 10. Setup and register mac80211
4341 **********************************/
4342
4343 err = iwl_setup_mac(priv);
4344 if (err)
4345 goto out_remove_sysfs;
4346
4347 err = iwl_dbgfs_register(priv, DRV_NAME);
4348 if (err)
4349 IWL_ERROR("failed to create debugfs files\n");
4350
4351 err = iwl_rfkill_init(priv);
4352 if (err)
4353 IWL_ERROR("Unable to initialize RFKILL system. "
4354 "Ignoring error: %d\n", err);
4355 iwl_power_initialize(priv);
4356 return 0;
4357
4358 out_remove_sysfs:
4359 sysfs_remove_group(&pdev->dev.kobj, &iwl4965_attribute_group);
4360 out_uninit_drv:
4361 iwl_uninit_drv(priv);
4362 out_free_eeprom:
4363 iwl_eeprom_free(priv);
4364 out_iounmap:
4365 pci_iounmap(pdev, priv->hw_base);
4366 out_pci_release_regions:
4367 pci_release_regions(pdev);
4368 pci_set_drvdata(pdev, NULL);
4369 out_pci_disable_device:
4370 pci_disable_device(pdev);
4371 out_ieee80211_free_hw:
4372 ieee80211_free_hw(priv->hw);
4373 out:
4374 return err;
4375 }
4376
4377 static void __devexit iwl4965_pci_remove(struct pci_dev *pdev)
4378 {
4379 struct iwl_priv *priv = pci_get_drvdata(pdev);
4380 unsigned long flags;
4381
4382 if (!priv)
4383 return;
4384
4385 IWL_DEBUG_INFO("*** UNLOAD DRIVER ***\n");
4386
4387 iwl_dbgfs_unregister(priv);
4388 sysfs_remove_group(&pdev->dev.kobj, &iwl4965_attribute_group);
4389
4390 /* ieee80211_unregister_hw call wil cause iwl4965_mac_stop to
4391 * to be called and iwl4965_down since we are removing the device
4392 * we need to set STATUS_EXIT_PENDING bit.
4393 */
4394 set_bit(STATUS_EXIT_PENDING, &priv->status);
4395 if (priv->mac80211_registered) {
4396 ieee80211_unregister_hw(priv->hw);
4397 priv->mac80211_registered = 0;
4398 } else {
4399 iwl4965_down(priv);
4400 }
4401
4402 /* make sure we flush any pending irq or
4403 * tasklet for the driver
4404 */
4405 spin_lock_irqsave(&priv->lock, flags);
4406 iwl4965_disable_interrupts(priv);
4407 spin_unlock_irqrestore(&priv->lock, flags);
4408
4409 iwl_synchronize_irq(priv);
4410
4411 iwl_rfkill_unregister(priv);
4412 iwl4965_dealloc_ucode_pci(priv);
4413
4414 if (priv->rxq.bd)
4415 iwl_rx_queue_free(priv, &priv->rxq);
4416 iwl_hw_txq_ctx_free(priv);
4417
4418 iwl_clear_stations_table(priv);
4419 iwl_eeprom_free(priv);
4420
4421
4422 /*netif_stop_queue(dev); */
4423 flush_workqueue(priv->workqueue);
4424
4425 /* ieee80211_unregister_hw calls iwl4965_mac_stop, which flushes
4426 * priv->workqueue... so we can't take down the workqueue
4427 * until now... */
4428 destroy_workqueue(priv->workqueue);
4429 priv->workqueue = NULL;
4430
4431 pci_iounmap(pdev, priv->hw_base);
4432 pci_release_regions(pdev);
4433 pci_disable_device(pdev);
4434 pci_set_drvdata(pdev, NULL);
4435
4436 iwl_uninit_drv(priv);
4437
4438 if (priv->ibss_beacon)
4439 dev_kfree_skb(priv->ibss_beacon);
4440
4441 ieee80211_free_hw(priv->hw);
4442 }
4443
4444 #ifdef CONFIG_PM
4445
4446 static int iwl4965_pci_suspend(struct pci_dev *pdev, pm_message_t state)
4447 {
4448 struct iwl_priv *priv = pci_get_drvdata(pdev);
4449
4450 if (priv->is_open) {
4451 set_bit(STATUS_IN_SUSPEND, &priv->status);
4452 iwl4965_mac_stop(priv->hw);
4453 priv->is_open = 1;
4454 }
4455
4456 pci_set_power_state(pdev, PCI_D3hot);
4457
4458 return 0;
4459 }
4460
4461 static int iwl4965_pci_resume(struct pci_dev *pdev)
4462 {
4463 struct iwl_priv *priv = pci_get_drvdata(pdev);
4464
4465 pci_set_power_state(pdev, PCI_D0);
4466
4467 if (priv->is_open)
4468 iwl4965_mac_start(priv->hw);
4469
4470 clear_bit(STATUS_IN_SUSPEND, &priv->status);
4471 return 0;
4472 }
4473
4474 #endif /* CONFIG_PM */
4475
4476 /*****************************************************************************
4477 *
4478 * driver and module entry point
4479 *
4480 *****************************************************************************/
4481
4482 /* Hardware specific file defines the PCI IDs table for that hardware module */
4483 static struct pci_device_id iwl_hw_card_ids[] = {
4484 #ifdef CONFIG_IWL4965
4485 {IWL_PCI_DEVICE(0x4229, PCI_ANY_ID, iwl4965_agn_cfg)},
4486 {IWL_PCI_DEVICE(0x4230, PCI_ANY_ID, iwl4965_agn_cfg)},
4487 #endif /* CONFIG_IWL4965 */
4488 #ifdef CONFIG_IWL5000
4489 {IWL_PCI_DEVICE(0x4232, 0x1205, iwl5100_bg_cfg)},
4490 {IWL_PCI_DEVICE(0x4232, 0x1305, iwl5100_bg_cfg)},
4491 {IWL_PCI_DEVICE(0x4232, 0x1206, iwl5100_abg_cfg)},
4492 {IWL_PCI_DEVICE(0x4232, 0x1306, iwl5100_abg_cfg)},
4493 {IWL_PCI_DEVICE(0x4232, 0x1326, iwl5100_abg_cfg)},
4494 {IWL_PCI_DEVICE(0x4237, 0x1216, iwl5100_abg_cfg)},
4495 {IWL_PCI_DEVICE(0x4232, PCI_ANY_ID, iwl5100_agn_cfg)},
4496 {IWL_PCI_DEVICE(0x4235, PCI_ANY_ID, iwl5300_agn_cfg)},
4497 {IWL_PCI_DEVICE(0x4236, PCI_ANY_ID, iwl5300_agn_cfg)},
4498 {IWL_PCI_DEVICE(0x4237, PCI_ANY_ID, iwl5100_agn_cfg)},
4499 /* 5350 WiFi/WiMax */
4500 {IWL_PCI_DEVICE(0x423A, 0x1001, iwl5350_agn_cfg)},
4501 {IWL_PCI_DEVICE(0x423A, 0x1021, iwl5350_agn_cfg)},
4502 {IWL_PCI_DEVICE(0x423B, 0x1011, iwl5350_agn_cfg)},
4503 #endif /* CONFIG_IWL5000 */
4504 {0}
4505 };
4506 MODULE_DEVICE_TABLE(pci, iwl_hw_card_ids);
4507
4508 static struct pci_driver iwl_driver = {
4509 .name = DRV_NAME,
4510 .id_table = iwl_hw_card_ids,
4511 .probe = iwl4965_pci_probe,
4512 .remove = __devexit_p(iwl4965_pci_remove),
4513 #ifdef CONFIG_PM
4514 .suspend = iwl4965_pci_suspend,
4515 .resume = iwl4965_pci_resume,
4516 #endif
4517 };
4518
4519 static int __init iwl4965_init(void)
4520 {
4521
4522 int ret;
4523 printk(KERN_INFO DRV_NAME ": " DRV_DESCRIPTION ", " DRV_VERSION "\n");
4524 printk(KERN_INFO DRV_NAME ": " DRV_COPYRIGHT "\n");
4525
4526 ret = iwlagn_rate_control_register();
4527 if (ret) {
4528 IWL_ERROR("Unable to register rate control algorithm: %d\n", ret);
4529 return ret;
4530 }
4531
4532 ret = pci_register_driver(&iwl_driver);
4533 if (ret) {
4534 IWL_ERROR("Unable to initialize PCI module\n");
4535 goto error_register;
4536 }
4537
4538 return ret;
4539
4540 error_register:
4541 iwlagn_rate_control_unregister();
4542 return ret;
4543 }
4544
4545 static void __exit iwl4965_exit(void)
4546 {
4547 pci_unregister_driver(&iwl_driver);
4548 iwlagn_rate_control_unregister();
4549 }
4550
4551 module_exit(iwl4965_exit);
4552 module_init(iwl4965_init);
Linux kernel - Deliverables
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