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iwlwifi: allow association on radar channel in power save
[linux/fpc-iii.git] / drivers / net / wireless / iwlwifi / iwl-agn.c
blobab92e19f0b6cb9e2e3706abf9a677df288b45e98
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 * iwl4965_full_rxon_required - check if full RXON (vs RXON_ASSOC) cmd is needed
185 * @priv: staging_rxon is compared to active_rxon
186 *
187 * If the RXON structure is changing enough to require a new tune,
188 * or is clearing the RXON_FILTER_ASSOC_MSK, then return 1 to indicate that
189 * a new tune (full RXON command, rather than RXON_ASSOC cmd) is required.
190 */
191 static int iwl4965_full_rxon_required(struct iwl_priv *priv)
192 {
193
194 /* These items are only settable from the full RXON command */
195 if (!(iwl_is_associated(priv)) ||
196 compare_ether_addr(priv->staging_rxon.bssid_addr,
197 priv->active_rxon.bssid_addr) ||
198 compare_ether_addr(priv->staging_rxon.node_addr,
199 priv->active_rxon.node_addr) ||
200 compare_ether_addr(priv->staging_rxon.wlap_bssid_addr,
201 priv->active_rxon.wlap_bssid_addr) ||
202 (priv->staging_rxon.dev_type != priv->active_rxon.dev_type) ||
203 (priv->staging_rxon.channel != priv->active_rxon.channel) ||
204 (priv->staging_rxon.air_propagation !=
205 priv->active_rxon.air_propagation) ||
206 (priv->staging_rxon.ofdm_ht_single_stream_basic_rates !=
207 priv->active_rxon.ofdm_ht_single_stream_basic_rates) ||
208 (priv->staging_rxon.ofdm_ht_dual_stream_basic_rates !=
209 priv->active_rxon.ofdm_ht_dual_stream_basic_rates) ||
210 (priv->staging_rxon.rx_chain != priv->active_rxon.rx_chain) ||
211 (priv->staging_rxon.assoc_id != priv->active_rxon.assoc_id))
212 return 1;
213
214 /* flags, filter_flags, ofdm_basic_rates, and cck_basic_rates can
215 * be updated with the RXON_ASSOC command -- however only some
216 * flag transitions are allowed using RXON_ASSOC */
217
218 /* Check if we are not switching bands */
219 if ((priv->staging_rxon.flags & RXON_FLG_BAND_24G_MSK) !=
220 (priv->active_rxon.flags & RXON_FLG_BAND_24G_MSK))
221 return 1;
222
223 /* Check if we are switching association toggle */
224 if ((priv->staging_rxon.filter_flags & RXON_FILTER_ASSOC_MSK) !=
225 (priv->active_rxon.filter_flags & RXON_FILTER_ASSOC_MSK))
226 return 1;
227
228 return 0;
229 }
230
231 /**
232 * iwl4965_commit_rxon - commit staging_rxon to hardware
233 *
234 * The RXON command in staging_rxon is committed to the hardware and
235 * the active_rxon structure is updated with the new data. This
236 * function correctly transitions out of the RXON_ASSOC_MSK state if
237 * a HW tune is required based on the RXON structure changes.
238 */
239 static int iwl4965_commit_rxon(struct iwl_priv *priv)
240 {
241 /* cast away the const for active_rxon in this function */
242 struct iwl_rxon_cmd *active_rxon = (void *)&priv->active_rxon;
243 DECLARE_MAC_BUF(mac);
244 int ret;
245 bool new_assoc =
246 !!(priv->staging_rxon.filter_flags & RXON_FILTER_ASSOC_MSK);
247
248 if (!iwl_is_alive(priv))
249 return -EBUSY;
250
251 /* always get timestamp with Rx frame */
252 priv->staging_rxon.flags |= RXON_FLG_TSF2HOST_MSK;
253 /* allow CTS-to-self if possible. this is relevant only for
254 * 5000, but will not damage 4965 */
255 priv->staging_rxon.flags |= RXON_FLG_SELF_CTS_EN;
256
257 ret = iwl4965_check_rxon_cmd(&priv->staging_rxon);
258 if (ret) {
259 IWL_ERROR("Invalid RXON configuration. Not committing.\n");
260 return -EINVAL;
261 }
262
263 /* If we don't need to send a full RXON, we can use
264 * iwl4965_rxon_assoc_cmd which is used to reconfigure filter
265 * and other flags for the current radio configuration. */
266 if (!iwl4965_full_rxon_required(priv)) {
267 ret = iwl_send_rxon_assoc(priv);
268 if (ret) {
269 IWL_ERROR("Error setting RXON_ASSOC (%d)\n", ret);
270 return ret;
271 }
272
273 memcpy(active_rxon, &priv->staging_rxon, sizeof(*active_rxon));
274 return 0;
275 }
276
277 /* station table will be cleared */
278 priv->assoc_station_added = 0;
279
280 /* If we are currently associated and the new config requires
281 * an RXON_ASSOC and the new config wants the associated mask enabled,
282 * we must clear the associated from the active configuration
283 * before we apply the new config */
284 if (iwl_is_associated(priv) && new_assoc) {
285 IWL_DEBUG_INFO("Toggling associated bit on current RXON\n");
286 active_rxon->filter_flags &= ~RXON_FILTER_ASSOC_MSK;
287
288 ret = iwl_send_cmd_pdu(priv, REPLY_RXON,
289 sizeof(struct iwl_rxon_cmd),
290 &priv->active_rxon);
291
292 /* If the mask clearing failed then we set
293 * active_rxon back to what it was previously */
294 if (ret) {
295 active_rxon->filter_flags |= RXON_FILTER_ASSOC_MSK;
296 IWL_ERROR("Error clearing ASSOC_MSK (%d)\n", ret);
297 return ret;
298 }
299 }
300
301 IWL_DEBUG_INFO("Sending RXON\n"
302 "* with%s RXON_FILTER_ASSOC_MSK\n"
303 "* channel = %d\n"
304 "* bssid = %s\n",
305 (new_assoc ? "" : "out"),
306 le16_to_cpu(priv->staging_rxon.channel),
307 print_mac(mac, priv->staging_rxon.bssid_addr));
308
309 iwl4965_set_rxon_hwcrypto(priv, !priv->hw_params.sw_crypto);
310
311 /* Apply the new configuration
312 * RXON unassoc clears the station table in uCode, send it before
313 * we add the bcast station. If assoc bit is set, we will send RXON
314 * after having added the bcast and bssid station.
315 */
316 if (!new_assoc) {
317 ret = iwl_send_cmd_pdu(priv, REPLY_RXON,
318 sizeof(struct iwl_rxon_cmd), &priv->staging_rxon);
319 if (ret) {
320 IWL_ERROR("Error setting new RXON (%d)\n", ret);
321 return ret;
322 }
323 memcpy(active_rxon, &priv->staging_rxon, sizeof(*active_rxon));
324 }
325
326 iwl_clear_stations_table(priv);
327
328 if (!priv->error_recovering)
329 priv->start_calib = 0;
330
331 /* Add the broadcast address so we can send broadcast frames */
332 if (iwl_rxon_add_station(priv, iwl_bcast_addr, 0) ==
333 IWL_INVALID_STATION) {
334 IWL_ERROR("Error adding BROADCAST address for transmit.\n");
335 return -EIO;
336 }
337
338 /* If we have set the ASSOC_MSK and we are in BSS mode then
339 * add the IWL_AP_ID to the station rate table */
340 if (new_assoc) {
341 if (priv->iw_mode == IEEE80211_IF_TYPE_STA) {
342 ret = iwl_rxon_add_station(priv,
343 priv->active_rxon.bssid_addr, 1);
344 if (ret == IWL_INVALID_STATION) {
345 IWL_ERROR("Error adding AP address for TX.\n");
346 return -EIO;
347 }
348 priv->assoc_station_added = 1;
349 if (priv->default_wep_key &&
350 iwl_send_static_wepkey_cmd(priv, 0))
351 IWL_ERROR("Could not send WEP static key.\n");
352 }
353
354 /* Apply the new configuration
355 * RXON assoc doesn't clear the station table in uCode,
356 */
357 ret = iwl_send_cmd_pdu(priv, REPLY_RXON,
358 sizeof(struct iwl_rxon_cmd), &priv->staging_rxon);
359 if (ret) {
360 IWL_ERROR("Error setting new RXON (%d)\n", ret);
361 return ret;
362 }
363 memcpy(active_rxon, &priv->staging_rxon, sizeof(*active_rxon));
364 }
365
366 iwl_init_sensitivity(priv);
367
368 /* If we issue a new RXON command which required a tune then we must
369 * send a new TXPOWER command or we won't be able to Tx any frames */
370 ret = iwl_set_tx_power(priv, priv->tx_power_user_lmt, true);
371 if (ret) {
372 IWL_ERROR("Error sending TX power (%d)\n", ret);
373 return ret;
374 }
375
376 return 0;
377 }
378
379 void iwl4965_update_chain_flags(struct iwl_priv *priv)
380 {
381
382 iwl_set_rxon_chain(priv);
383 iwl4965_commit_rxon(priv);
384 }
385
386 static int iwl4965_send_bt_config(struct iwl_priv *priv)
387 {
388 struct iwl4965_bt_cmd bt_cmd = {
389 .flags = 3,
390 .lead_time = 0xAA,
391 .max_kill = 1,
392 .kill_ack_mask = 0,
393 .kill_cts_mask = 0,
394 };
395
396 return iwl_send_cmd_pdu(priv, REPLY_BT_CONFIG,
397 sizeof(struct iwl4965_bt_cmd), &bt_cmd);
398 }
399
400 static void iwl_clear_free_frames(struct iwl_priv *priv)
401 {
402 struct list_head *element;
403
404 IWL_DEBUG_INFO("%d frames on pre-allocated heap on clear.\n",
405 priv->frames_count);
406
407 while (!list_empty(&priv->free_frames)) {
408 element = priv->free_frames.next;
409 list_del(element);
410 kfree(list_entry(element, struct iwl_frame, list));
411 priv->frames_count--;
412 }
413
414 if (priv->frames_count) {
415 IWL_WARNING("%d frames still in use. Did we lose one?\n",
416 priv->frames_count);
417 priv->frames_count = 0;
418 }
419 }
420
421 static struct iwl_frame *iwl_get_free_frame(struct iwl_priv *priv)
422 {
423 struct iwl_frame *frame;
424 struct list_head *element;
425 if (list_empty(&priv->free_frames)) {
426 frame = kzalloc(sizeof(*frame), GFP_KERNEL);
427 if (!frame) {
428 IWL_ERROR("Could not allocate frame!\n");
429 return NULL;
430 }
431
432 priv->frames_count++;
433 return frame;
434 }
435
436 element = priv->free_frames.next;
437 list_del(element);
438 return list_entry(element, struct iwl_frame, list);
439 }
440
441 static void iwl_free_frame(struct iwl_priv *priv, struct iwl_frame *frame)
442 {
443 memset(frame, 0, sizeof(*frame));
444 list_add(&frame->list, &priv->free_frames);
445 }
446
447 static unsigned int iwl_fill_beacon_frame(struct iwl_priv *priv,
448 struct ieee80211_hdr *hdr,
449 const u8 *dest, int left)
450 {
451 if (!iwl_is_associated(priv) || !priv->ibss_beacon ||
452 ((priv->iw_mode != IEEE80211_IF_TYPE_IBSS) &&
453 (priv->iw_mode != IEEE80211_IF_TYPE_AP)))
454 return 0;
455
456 if (priv->ibss_beacon->len > left)
457 return 0;
458
459 memcpy(hdr, priv->ibss_beacon->data, priv->ibss_beacon->len);
460
461 return priv->ibss_beacon->len;
462 }
463
464 static u8 iwl4965_rate_get_lowest_plcp(struct iwl_priv *priv)
465 {
466 int i;
467 int rate_mask;
468
469 /* Set rate mask*/
470 if (priv->staging_rxon.flags & RXON_FLG_BAND_24G_MSK)
471 rate_mask = priv->active_rate_basic & 0xF;
472 else
473 rate_mask = priv->active_rate_basic & 0xFF0;
474
475 /* Find lowest valid rate */
476 for (i = IWL_RATE_1M_INDEX; i != IWL_RATE_INVALID;
477 i = iwl_rates[i].next_ieee) {
478 if (rate_mask & (1 << i))
479 return iwl_rates[i].plcp;
480 }
481
482 /* No valid rate was found. Assign the lowest one */
483 if (priv->staging_rxon.flags & RXON_FLG_BAND_24G_MSK)
484 return IWL_RATE_1M_PLCP;
485 else
486 return IWL_RATE_6M_PLCP;
487 }
488
489 unsigned int iwl4965_hw_get_beacon_cmd(struct iwl_priv *priv,
490 struct iwl_frame *frame, u8 rate)
491 {
492 struct iwl_tx_beacon_cmd *tx_beacon_cmd;
493 unsigned int frame_size;
494
495 tx_beacon_cmd = &frame->u.beacon;
496 memset(tx_beacon_cmd, 0, sizeof(*tx_beacon_cmd));
497
498 tx_beacon_cmd->tx.sta_id = priv->hw_params.bcast_sta_id;
499 tx_beacon_cmd->tx.stop_time.life_time = TX_CMD_LIFE_TIME_INFINITE;
500
501 frame_size = iwl_fill_beacon_frame(priv, tx_beacon_cmd->frame,
502 iwl_bcast_addr,
503 sizeof(frame->u) - sizeof(*tx_beacon_cmd));
504
505 BUG_ON(frame_size > MAX_MPDU_SIZE);
506 tx_beacon_cmd->tx.len = cpu_to_le16((u16)frame_size);
507
508 if ((rate == IWL_RATE_1M_PLCP) || (rate >= IWL_RATE_2M_PLCP))
509 tx_beacon_cmd->tx.rate_n_flags =
510 iwl_hw_set_rate_n_flags(rate, RATE_MCS_CCK_MSK);
511 else
512 tx_beacon_cmd->tx.rate_n_flags =
513 iwl_hw_set_rate_n_flags(rate, 0);
514
515 tx_beacon_cmd->tx.tx_flags = TX_CMD_FLG_SEQ_CTL_MSK |
516 TX_CMD_FLG_TSF_MSK |
517 TX_CMD_FLG_STA_RATE_MSK;
518
519 return sizeof(*tx_beacon_cmd) + frame_size;
520 }
521 static int iwl4965_send_beacon_cmd(struct iwl_priv *priv)
522 {
523 struct iwl_frame *frame;
524 unsigned int frame_size;
525 int rc;
526 u8 rate;
527
528 frame = iwl_get_free_frame(priv);
529
530 if (!frame) {
531 IWL_ERROR("Could not obtain free frame buffer for beacon "
532 "command.\n");
533 return -ENOMEM;
534 }
535
536 rate = iwl4965_rate_get_lowest_plcp(priv);
537
538 frame_size = iwl4965_hw_get_beacon_cmd(priv, frame, rate);
539
540 rc = iwl_send_cmd_pdu(priv, REPLY_TX_BEACON, frame_size,
541 &frame->u.cmd[0]);
542
543 iwl_free_frame(priv, frame);
544
545 return rc;
546 }
547
548 /******************************************************************************
549 *
550 * Misc. internal state and helper functions
551 *
552 ******************************************************************************/
553
554 static void iwl4965_ht_conf(struct iwl_priv *priv,
555 struct ieee80211_bss_conf *bss_conf)
556 {
557 struct ieee80211_ht_info *ht_conf = bss_conf->ht_conf;
558 struct ieee80211_ht_bss_info *ht_bss_conf = bss_conf->ht_bss_conf;
559 struct iwl_ht_info *iwl_conf = &priv->current_ht_config;
560
561 IWL_DEBUG_MAC80211("enter: \n");
562
563 iwl_conf->is_ht = bss_conf->assoc_ht;
564
565 if (!iwl_conf->is_ht)
566 return;
567
568 priv->ps_mode = (u8)((ht_conf->cap & IEEE80211_HT_CAP_MIMO_PS) >> 2);
569
570 if (ht_conf->cap & IEEE80211_HT_CAP_SGI_20)
571 iwl_conf->sgf |= HT_SHORT_GI_20MHZ;
572 if (ht_conf->cap & IEEE80211_HT_CAP_SGI_40)
573 iwl_conf->sgf |= HT_SHORT_GI_40MHZ;
574
575 iwl_conf->is_green_field = !!(ht_conf->cap & IEEE80211_HT_CAP_GRN_FLD);
576 iwl_conf->max_amsdu_size =
577 !!(ht_conf->cap & IEEE80211_HT_CAP_MAX_AMSDU);
578
579 iwl_conf->supported_chan_width =
580 !!(ht_conf->cap & IEEE80211_HT_CAP_SUP_WIDTH);
581 iwl_conf->extension_chan_offset =
582 ht_bss_conf->bss_cap & IEEE80211_HT_IE_CHA_SEC_OFFSET;
583 /* If no above or below channel supplied disable FAT channel */
584 if (iwl_conf->extension_chan_offset != IEEE80211_HT_IE_CHA_SEC_ABOVE &&
585 iwl_conf->extension_chan_offset != IEEE80211_HT_IE_CHA_SEC_BELOW) {
586 iwl_conf->extension_chan_offset = IEEE80211_HT_IE_CHA_SEC_NONE;
587 iwl_conf->supported_chan_width = 0;
588 }
589
590 iwl_conf->tx_mimo_ps_mode =
591 (u8)((ht_conf->cap & IEEE80211_HT_CAP_MIMO_PS) >> 2);
592 memcpy(iwl_conf->supp_mcs_set, ht_conf->supp_mcs_set, 16);
593
594 iwl_conf->control_channel = ht_bss_conf->primary_channel;
595 iwl_conf->tx_chan_width =
596 !!(ht_bss_conf->bss_cap & IEEE80211_HT_IE_CHA_WIDTH);
597 iwl_conf->ht_protection =
598 ht_bss_conf->bss_op_mode & IEEE80211_HT_IE_HT_PROTECTION;
599 iwl_conf->non_GF_STA_present =
600 !!(ht_bss_conf->bss_op_mode & IEEE80211_HT_IE_NON_GF_STA_PRSNT);
601
602 IWL_DEBUG_MAC80211("control channel %d\n", iwl_conf->control_channel);
603 IWL_DEBUG_MAC80211("leave\n");
604 }
605
606 /*
607 * QoS support
608 */
609 static void iwl_activate_qos(struct iwl_priv *priv, u8 force)
610 {
611 if (test_bit(STATUS_EXIT_PENDING, &priv->status))
612 return;
613
614 if (!priv->qos_data.qos_enable)
615 return;
616
617 priv->qos_data.def_qos_parm.qos_flags = 0;
618
619 if (priv->qos_data.qos_cap.q_AP.queue_request &&
620 !priv->qos_data.qos_cap.q_AP.txop_request)
621 priv->qos_data.def_qos_parm.qos_flags |=
622 QOS_PARAM_FLG_TXOP_TYPE_MSK;
623 if (priv->qos_data.qos_active)
624 priv->qos_data.def_qos_parm.qos_flags |=
625 QOS_PARAM_FLG_UPDATE_EDCA_MSK;
626
627 if (priv->current_ht_config.is_ht)
628 priv->qos_data.def_qos_parm.qos_flags |= QOS_PARAM_FLG_TGN_MSK;
629
630 if (force || iwl_is_associated(priv)) {
631 IWL_DEBUG_QOS("send QoS cmd with Qos active=%d FLAGS=0x%X\n",
632 priv->qos_data.qos_active,
633 priv->qos_data.def_qos_parm.qos_flags);
634
635 iwl_send_cmd_pdu_async(priv, REPLY_QOS_PARAM,
636 sizeof(struct iwl_qosparam_cmd),
637 &priv->qos_data.def_qos_parm, NULL);
638 }
639 }
640
641 #define MAX_UCODE_BEACON_INTERVAL 4096
642
643 static __le16 iwl4965_adjust_beacon_interval(u16 beacon_val)
644 {
645 u16 new_val = 0;
646 u16 beacon_factor = 0;
647
648 beacon_factor =
649 (beacon_val + MAX_UCODE_BEACON_INTERVAL)
650 / MAX_UCODE_BEACON_INTERVAL;
651 new_val = beacon_val / beacon_factor;
652
653 return cpu_to_le16(new_val);
654 }
655
656 static void iwl4965_setup_rxon_timing(struct iwl_priv *priv)
657 {
658 u64 interval_tm_unit;
659 u64 tsf, result;
660 unsigned long flags;
661 struct ieee80211_conf *conf = NULL;
662 u16 beacon_int = 0;
663
664 conf = ieee80211_get_hw_conf(priv->hw);
665
666 spin_lock_irqsave(&priv->lock, flags);
667 priv->rxon_timing.timestamp.dw[1] = cpu_to_le32(priv->timestamp >> 32);
668 priv->rxon_timing.timestamp.dw[0] =
669 cpu_to_le32(priv->timestamp & 0xFFFFFFFF);
670
671 priv->rxon_timing.listen_interval = cpu_to_le16(conf->listen_interval);
672
673 tsf = priv->timestamp;
674
675 beacon_int = priv->beacon_int;
676 spin_unlock_irqrestore(&priv->lock, flags);
677
678 if (priv->iw_mode == IEEE80211_IF_TYPE_STA) {
679 if (beacon_int == 0) {
680 priv->rxon_timing.beacon_interval = cpu_to_le16(100);
681 priv->rxon_timing.beacon_init_val = cpu_to_le32(102400);
682 } else {
683 priv->rxon_timing.beacon_interval =
684 cpu_to_le16(beacon_int);
685 priv->rxon_timing.beacon_interval =
686 iwl4965_adjust_beacon_interval(
687 le16_to_cpu(priv->rxon_timing.beacon_interval));
688 }
689
690 priv->rxon_timing.atim_window = 0;
691 } else {
692 priv->rxon_timing.beacon_interval =
693 iwl4965_adjust_beacon_interval(conf->beacon_int);
694 /* TODO: we need to get atim_window from upper stack
695 * for now we set to 0 */
696 priv->rxon_timing.atim_window = 0;
697 }
698
699 interval_tm_unit =
700 (le16_to_cpu(priv->rxon_timing.beacon_interval) * 1024);
701 result = do_div(tsf, interval_tm_unit);
702 priv->rxon_timing.beacon_init_val =
703 cpu_to_le32((u32) ((u64) interval_tm_unit - result));
704
705 IWL_DEBUG_ASSOC
706 ("beacon interval %d beacon timer %d beacon tim %d\n",
707 le16_to_cpu(priv->rxon_timing.beacon_interval),
708 le32_to_cpu(priv->rxon_timing.beacon_init_val),
709 le16_to_cpu(priv->rxon_timing.atim_window));
710 }
711
712 static void iwl_set_flags_for_band(struct iwl_priv *priv,
713 enum ieee80211_band band)
714 {
715 if (band == IEEE80211_BAND_5GHZ) {
716 priv->staging_rxon.flags &=
717 ~(RXON_FLG_BAND_24G_MSK | RXON_FLG_AUTO_DETECT_MSK
718 | RXON_FLG_CCK_MSK);
719 priv->staging_rxon.flags |= RXON_FLG_SHORT_SLOT_MSK;
720 } else {
721 /* Copied from iwl4965_post_associate() */
722 if (priv->assoc_capability & WLAN_CAPABILITY_SHORT_SLOT_TIME)
723 priv->staging_rxon.flags |= RXON_FLG_SHORT_SLOT_MSK;
724 else
725 priv->staging_rxon.flags &= ~RXON_FLG_SHORT_SLOT_MSK;
726
727 if (priv->iw_mode == IEEE80211_IF_TYPE_IBSS)
728 priv->staging_rxon.flags &= ~RXON_FLG_SHORT_SLOT_MSK;
729
730 priv->staging_rxon.flags |= RXON_FLG_BAND_24G_MSK;
731 priv->staging_rxon.flags |= RXON_FLG_AUTO_DETECT_MSK;
732 priv->staging_rxon.flags &= ~RXON_FLG_CCK_MSK;
733 }
734 }
735
736 /*
737 * initialize rxon structure with default values from eeprom
738 */
739 static void iwl4965_connection_init_rx_config(struct iwl_priv *priv)
740 {
741 const struct iwl_channel_info *ch_info;
742
743 memset(&priv->staging_rxon, 0, sizeof(priv->staging_rxon));
744
745 switch (priv->iw_mode) {
746 case IEEE80211_IF_TYPE_AP:
747 priv->staging_rxon.dev_type = RXON_DEV_TYPE_AP;
748 break;
749
750 case IEEE80211_IF_TYPE_STA:
751 priv->staging_rxon.dev_type = RXON_DEV_TYPE_ESS;
752 priv->staging_rxon.filter_flags = RXON_FILTER_ACCEPT_GRP_MSK;
753 break;
754
755 case IEEE80211_IF_TYPE_IBSS:
756 priv->staging_rxon.dev_type = RXON_DEV_TYPE_IBSS;
757 priv->staging_rxon.flags = RXON_FLG_SHORT_PREAMBLE_MSK;
758 priv->staging_rxon.filter_flags = RXON_FILTER_BCON_AWARE_MSK |
759 RXON_FILTER_ACCEPT_GRP_MSK;
760 break;
761
762 case IEEE80211_IF_TYPE_MNTR:
763 priv->staging_rxon.dev_type = RXON_DEV_TYPE_SNIFFER;
764 priv->staging_rxon.filter_flags = RXON_FILTER_PROMISC_MSK |
765 RXON_FILTER_CTL2HOST_MSK | RXON_FILTER_ACCEPT_GRP_MSK;
766 break;
767 default:
768 IWL_ERROR("Unsupported interface type %d\n", priv->iw_mode);
769 break;
770 }
771
772 #if 0
773 /* TODO: Figure out when short_preamble would be set and cache from
774 * that */
775 if (!hw_to_local(priv->hw)->short_preamble)
776 priv->staging_rxon.flags &= ~RXON_FLG_SHORT_PREAMBLE_MSK;
777 else
778 priv->staging_rxon.flags |= RXON_FLG_SHORT_PREAMBLE_MSK;
779 #endif
780
781 ch_info = iwl_get_channel_info(priv, priv->band,
782 le16_to_cpu(priv->active_rxon.channel));
783
784 if (!ch_info)
785 ch_info = &priv->channel_info[0];
786
787 /*
788 * in some case A channels are all non IBSS
789 * in this case force B/G channel
790 */
791 if ((priv->iw_mode == IEEE80211_IF_TYPE_IBSS) &&
792 !(is_channel_ibss(ch_info)))
793 ch_info = &priv->channel_info[0];
794
795 priv->staging_rxon.channel = cpu_to_le16(ch_info->channel);
796 priv->band = ch_info->band;
797
798 iwl_set_flags_for_band(priv, priv->band);
799
800 priv->staging_rxon.ofdm_basic_rates =
801 (IWL_OFDM_RATES_MASK >> IWL_FIRST_OFDM_RATE) & 0xFF;
802 priv->staging_rxon.cck_basic_rates =
803 (IWL_CCK_RATES_MASK >> IWL_FIRST_CCK_RATE) & 0xF;
804
805 priv->staging_rxon.flags &= ~(RXON_FLG_CHANNEL_MODE_MIXED_MSK |
806 RXON_FLG_CHANNEL_MODE_PURE_40_MSK);
807 memcpy(priv->staging_rxon.node_addr, priv->mac_addr, ETH_ALEN);
808 memcpy(priv->staging_rxon.wlap_bssid_addr, priv->mac_addr, ETH_ALEN);
809 priv->staging_rxon.ofdm_ht_single_stream_basic_rates = 0xff;
810 priv->staging_rxon.ofdm_ht_dual_stream_basic_rates = 0xff;
811 iwl_set_rxon_chain(priv);
812 }
813
814 static int iwl4965_set_mode(struct iwl_priv *priv, int mode)
815 {
816 priv->iw_mode = mode;
817
818 iwl4965_connection_init_rx_config(priv);
819 memcpy(priv->staging_rxon.node_addr, priv->mac_addr, ETH_ALEN);
820
821 iwl_clear_stations_table(priv);
822
823 /* dont commit rxon if rf-kill is on*/
824 if (!iwl_is_ready_rf(priv))
825 return -EAGAIN;
826
827 cancel_delayed_work(&priv->scan_check);
828 if (iwl_scan_cancel_timeout(priv, 100)) {
829 IWL_WARNING("Aborted scan still in progress after 100ms\n");
830 IWL_DEBUG_MAC80211("leaving - scan abort failed.\n");
831 return -EAGAIN;
832 }
833
834 iwl4965_commit_rxon(priv);
835
836 return 0;
837 }
838
839 static void iwl4965_set_rate(struct iwl_priv *priv)
840 {
841 const struct ieee80211_supported_band *hw = NULL;
842 struct ieee80211_rate *rate;
843 int i;
844
845 hw = iwl_get_hw_mode(priv, priv->band);
846 if (!hw) {
847 IWL_ERROR("Failed to set rate: unable to get hw mode\n");
848 return;
849 }
850
851 priv->active_rate = 0;
852 priv->active_rate_basic = 0;
853
854 for (i = 0; i < hw->n_bitrates; i++) {
855 rate = &(hw->bitrates[i]);
856 if (rate->hw_value < IWL_RATE_COUNT)
857 priv->active_rate |= (1 << rate->hw_value);
858 }
859
860 IWL_DEBUG_RATE("Set active_rate = %0x, active_rate_basic = %0x\n",
861 priv->active_rate, priv->active_rate_basic);
862
863 /*
864 * If a basic rate is configured, then use it (adding IWL_RATE_1M_MASK)
865 * otherwise set it to the default of all CCK rates and 6, 12, 24 for
866 * OFDM
867 */
868 if (priv->active_rate_basic & IWL_CCK_BASIC_RATES_MASK)
869 priv->staging_rxon.cck_basic_rates =
870 ((priv->active_rate_basic &
871 IWL_CCK_RATES_MASK) >> IWL_FIRST_CCK_RATE) & 0xF;
872 else
873 priv->staging_rxon.cck_basic_rates =
874 (IWL_CCK_BASIC_RATES_MASK >> IWL_FIRST_CCK_RATE) & 0xF;
875
876 if (priv->active_rate_basic & IWL_OFDM_BASIC_RATES_MASK)
877 priv->staging_rxon.ofdm_basic_rates =
878 ((priv->active_rate_basic &
879 (IWL_OFDM_BASIC_RATES_MASK | IWL_RATE_6M_MASK)) >>
880 IWL_FIRST_OFDM_RATE) & 0xFF;
881 else
882 priv->staging_rxon.ofdm_basic_rates =
883 (IWL_OFDM_BASIC_RATES_MASK >> IWL_FIRST_OFDM_RATE) & 0xFF;
884 }
885
886 #ifdef CONFIG_IWLAGN_SPECTRUM_MEASUREMENT
887
888 #include "iwl-spectrum.h"
889
890 #define BEACON_TIME_MASK_LOW 0x00FFFFFF
891 #define BEACON_TIME_MASK_HIGH 0xFF000000
892 #define TIME_UNIT 1024
893
894 /*
895 * extended beacon time format
896 * time in usec will be changed into a 32-bit value in 8:24 format
897 * the high 1 byte is the beacon counts
898 * the lower 3 bytes is the time in usec within one beacon interval
899 */
900
901 static u32 iwl4965_usecs_to_beacons(u32 usec, u32 beacon_interval)
902 {
903 u32 quot;
904 u32 rem;
905 u32 interval = beacon_interval * 1024;
906
907 if (!interval || !usec)
908 return 0;
909
910 quot = (usec / interval) & (BEACON_TIME_MASK_HIGH >> 24);
911 rem = (usec % interval) & BEACON_TIME_MASK_LOW;
912
913 return (quot << 24) + rem;
914 }
915
916 /* base is usually what we get from ucode with each received frame,
917 * the same as HW timer counter counting down
918 */
919
920 static __le32 iwl4965_add_beacon_time(u32 base, u32 addon, u32 beacon_interval)
921 {
922 u32 base_low = base & BEACON_TIME_MASK_LOW;
923 u32 addon_low = addon & BEACON_TIME_MASK_LOW;
924 u32 interval = beacon_interval * TIME_UNIT;
925 u32 res = (base & BEACON_TIME_MASK_HIGH) +
926 (addon & BEACON_TIME_MASK_HIGH);
927
928 if (base_low > addon_low)
929 res += base_low - addon_low;
930 else if (base_low < addon_low) {
931 res += interval + base_low - addon_low;
932 res += (1 << 24);
933 } else
934 res += (1 << 24);
935
936 return cpu_to_le32(res);
937 }
938
939 static int iwl4965_get_measurement(struct iwl_priv *priv,
940 struct ieee80211_measurement_params *params,
941 u8 type)
942 {
943 struct iwl4965_spectrum_cmd spectrum;
944 struct iwl_rx_packet *res;
945 struct iwl_host_cmd cmd = {
946 .id = REPLY_SPECTRUM_MEASUREMENT_CMD,
947 .data = (void *)&spectrum,
948 .meta.flags = CMD_WANT_SKB,
949 };
950 u32 add_time = le64_to_cpu(params->start_time);
951 int rc;
952 int spectrum_resp_status;
953 int duration = le16_to_cpu(params->duration);
954
955 if (iwl_is_associated(priv))
956 add_time =
957 iwl4965_usecs_to_beacons(
958 le64_to_cpu(params->start_time) - priv->last_tsf,
959 le16_to_cpu(priv->rxon_timing.beacon_interval));
960
961 memset(&spectrum, 0, sizeof(spectrum));
962
963 spectrum.channel_count = cpu_to_le16(1);
964 spectrum.flags =
965 RXON_FLG_TSF2HOST_MSK | RXON_FLG_ANT_A_MSK | RXON_FLG_DIS_DIV_MSK;
966 spectrum.filter_flags = MEASUREMENT_FILTER_FLAG;
967 cmd.len = sizeof(spectrum);
968 spectrum.len = cpu_to_le16(cmd.len - sizeof(spectrum.len));
969
970 if (iwl_is_associated(priv))
971 spectrum.start_time =
972 iwl4965_add_beacon_time(priv->last_beacon_time,
973 add_time,
974 le16_to_cpu(priv->rxon_timing.beacon_interval));
975 else
976 spectrum.start_time = 0;
977
978 spectrum.channels[0].duration = cpu_to_le32(duration * TIME_UNIT);
979 spectrum.channels[0].channel = params->channel;
980 spectrum.channels[0].type = type;
981 if (priv->active_rxon.flags & RXON_FLG_BAND_24G_MSK)
982 spectrum.flags |= RXON_FLG_BAND_24G_MSK |
983 RXON_FLG_AUTO_DETECT_MSK | RXON_FLG_TGG_PROTECT_MSK;
984
985 rc = iwl_send_cmd_sync(priv, &cmd);
986 if (rc)
987 return rc;
988
989 res = (struct iwl_rx_packet *)cmd.meta.u.skb->data;
990 if (res->hdr.flags & IWL_CMD_FAILED_MSK) {
991 IWL_ERROR("Bad return from REPLY_RX_ON_ASSOC command\n");
992 rc = -EIO;
993 }
994
995 spectrum_resp_status = le16_to_cpu(res->u.spectrum.status);
996 switch (spectrum_resp_status) {
997 case 0: /* Command will be handled */
998 if (res->u.spectrum.id != 0xff) {
999 IWL_DEBUG_INFO
1000 ("Replaced existing measurement: %d\n",
1001 res->u.spectrum.id);
1002 priv->measurement_status &= ~MEASUREMENT_READY;
1003 }
1004 priv->measurement_status |= MEASUREMENT_ACTIVE;
1005 rc = 0;
1006 break;
1007
1008 case 1: /* Command will not be handled */
1009 rc = -EAGAIN;
1010 break;
1011 }
1012
1013 dev_kfree_skb_any(cmd.meta.u.skb);
1014
1015 return rc;
1016 }
1017 #endif
1018
1019 /******************************************************************************
1020 *
1021 * Generic RX handler implementations
1022 *
1023 ******************************************************************************/
1024 static void iwl_rx_reply_alive(struct iwl_priv *priv,
1025 struct iwl_rx_mem_buffer *rxb)
1026 {
1027 struct iwl_rx_packet *pkt = (struct iwl_rx_packet *)rxb->skb->data;
1028 struct iwl_alive_resp *palive;
1029 struct delayed_work *pwork;
1030
1031 palive = &pkt->u.alive_frame;
1032
1033 IWL_DEBUG_INFO("Alive ucode status 0x%08X revision "
1034 "0x%01X 0x%01X\n",
1035 palive->is_valid, palive->ver_type,
1036 palive->ver_subtype);
1037
1038 if (palive->ver_subtype == INITIALIZE_SUBTYPE) {
1039 IWL_DEBUG_INFO("Initialization Alive received.\n");
1040 memcpy(&priv->card_alive_init,
1041 &pkt->u.alive_frame,
1042 sizeof(struct iwl_init_alive_resp));
1043 pwork = &priv->init_alive_start;
1044 } else {
1045 IWL_DEBUG_INFO("Runtime Alive received.\n");
1046 memcpy(&priv->card_alive, &pkt->u.alive_frame,
1047 sizeof(struct iwl_alive_resp));
1048 pwork = &priv->alive_start;
1049 }
1050
1051 /* We delay the ALIVE response by 5ms to
1052 * give the HW RF Kill time to activate... */
1053 if (palive->is_valid == UCODE_VALID_OK)
1054 queue_delayed_work(priv->workqueue, pwork,
1055 msecs_to_jiffies(5));
1056 else
1057 IWL_WARNING("uCode did not respond OK.\n");
1058 }
1059
1060 static void iwl4965_rx_reply_error(struct iwl_priv *priv,
1061 struct iwl_rx_mem_buffer *rxb)
1062 {
1063 struct iwl_rx_packet *pkt = (struct iwl_rx_packet *)rxb->skb->data;
1064
1065 IWL_ERROR("Error Reply type 0x%08X cmd %s (0x%02X) "
1066 "seq 0x%04X ser 0x%08X\n",
1067 le32_to_cpu(pkt->u.err_resp.error_type),
1068 get_cmd_string(pkt->u.err_resp.cmd_id),
1069 pkt->u.err_resp.cmd_id,
1070 le16_to_cpu(pkt->u.err_resp.bad_cmd_seq_num),
1071 le32_to_cpu(pkt->u.err_resp.error_info));
1072 }
1073
1074 #define TX_STATUS_ENTRY(x) case TX_STATUS_FAIL_ ## x: return #x
1075
1076 static void iwl4965_rx_csa(struct iwl_priv *priv, struct iwl_rx_mem_buffer *rxb)
1077 {
1078 struct iwl_rx_packet *pkt = (struct iwl_rx_packet *)rxb->skb->data;
1079 struct iwl_rxon_cmd *rxon = (void *)&priv->active_rxon;
1080 struct iwl4965_csa_notification *csa = &(pkt->u.csa_notif);
1081 IWL_DEBUG_11H("CSA notif: channel %d, status %d\n",
1082 le16_to_cpu(csa->channel), le32_to_cpu(csa->status));
1083 rxon->channel = csa->channel;
1084 priv->staging_rxon.channel = csa->channel;
1085 }
1086
1087 static void iwl4965_rx_spectrum_measure_notif(struct iwl_priv *priv,
1088 struct iwl_rx_mem_buffer *rxb)
1089 {
1090 #ifdef CONFIG_IWLAGN_SPECTRUM_MEASUREMENT
1091 struct iwl_rx_packet *pkt = (struct iwl_rx_packet *)rxb->skb->data;
1092 struct iwl4965_spectrum_notification *report = &(pkt->u.spectrum_notif);
1093
1094 if (!report->state) {
1095 IWL_DEBUG(IWL_DL_11H,
1096 "Spectrum Measure Notification: Start\n");
1097 return;
1098 }
1099
1100 memcpy(&priv->measure_report, report, sizeof(*report));
1101 priv->measurement_status |= MEASUREMENT_READY;
1102 #endif
1103 }
1104
1105 static void iwl4965_rx_pm_sleep_notif(struct iwl_priv *priv,
1106 struct iwl_rx_mem_buffer *rxb)
1107 {
1108 #ifdef CONFIG_IWLWIFI_DEBUG
1109 struct iwl_rx_packet *pkt = (struct iwl_rx_packet *)rxb->skb->data;
1110 struct iwl4965_sleep_notification *sleep = &(pkt->u.sleep_notif);
1111 IWL_DEBUG_RX("sleep mode: %d, src: %d\n",
1112 sleep->pm_sleep_mode, sleep->pm_wakeup_src);
1113 #endif
1114 }
1115
1116 static void iwl4965_rx_pm_debug_statistics_notif(struct iwl_priv *priv,
1117 struct iwl_rx_mem_buffer *rxb)
1118 {
1119 struct iwl_rx_packet *pkt = (struct iwl_rx_packet *)rxb->skb->data;
1120 IWL_DEBUG_RADIO("Dumping %d bytes of unhandled "
1121 "notification for %s:\n",
1122 le32_to_cpu(pkt->len), get_cmd_string(pkt->hdr.cmd));
1123 iwl_print_hex_dump(priv, IWL_DL_RADIO, pkt->u.raw, le32_to_cpu(pkt->len));
1124 }
1125
1126 static void iwl4965_bg_beacon_update(struct work_struct *work)
1127 {
1128 struct iwl_priv *priv =
1129 container_of(work, struct iwl_priv, beacon_update);
1130 struct sk_buff *beacon;
1131
1132 /* Pull updated AP beacon from mac80211. will fail if not in AP mode */
1133 beacon = ieee80211_beacon_get(priv->hw, priv->vif);
1134
1135 if (!beacon) {
1136 IWL_ERROR("update beacon failed\n");
1137 return;
1138 }
1139
1140 mutex_lock(&priv->mutex);
1141 /* new beacon skb is allocated every time; dispose previous.*/
1142 if (priv->ibss_beacon)
1143 dev_kfree_skb(priv->ibss_beacon);
1144
1145 priv->ibss_beacon = beacon;
1146 mutex_unlock(&priv->mutex);
1147
1148 iwl4965_send_beacon_cmd(priv);
1149 }
1150
1151 /**
1152 * iwl4965_bg_statistics_periodic - Timer callback to queue statistics
1153 *
1154 * This callback is provided in order to send a statistics request.
1155 *
1156 * This timer function is continually reset to execute within
1157 * REG_RECALIB_PERIOD seconds since the last STATISTICS_NOTIFICATION
1158 * was received. We need to ensure we receive the statistics in order
1159 * to update the temperature used for calibrating the TXPOWER.
1160 */
1161 static void iwl4965_bg_statistics_periodic(unsigned long data)
1162 {
1163 struct iwl_priv *priv = (struct iwl_priv *)data;
1164
1165 if (test_bit(STATUS_EXIT_PENDING, &priv->status))
1166 return;
1167
1168 iwl_send_statistics_request(priv, CMD_ASYNC);
1169 }
1170
1171 static void iwl4965_rx_beacon_notif(struct iwl_priv *priv,
1172 struct iwl_rx_mem_buffer *rxb)
1173 {
1174 #ifdef CONFIG_IWLWIFI_DEBUG
1175 struct iwl_rx_packet *pkt = (struct iwl_rx_packet *)rxb->skb->data;
1176 struct iwl4965_beacon_notif *beacon = &(pkt->u.beacon_status);
1177 u8 rate = iwl_hw_get_rate(beacon->beacon_notify_hdr.rate_n_flags);
1178
1179 IWL_DEBUG_RX("beacon status %x retries %d iss %d "
1180 "tsf %d %d rate %d\n",
1181 le32_to_cpu(beacon->beacon_notify_hdr.u.status) & TX_STATUS_MSK,
1182 beacon->beacon_notify_hdr.failure_frame,
1183 le32_to_cpu(beacon->ibss_mgr_status),
1184 le32_to_cpu(beacon->high_tsf),
1185 le32_to_cpu(beacon->low_tsf), rate);
1186 #endif
1187
1188 if ((priv->iw_mode == IEEE80211_IF_TYPE_AP) &&
1189 (!test_bit(STATUS_EXIT_PENDING, &priv->status)))
1190 queue_work(priv->workqueue, &priv->beacon_update);
1191 }
1192
1193 /* Handle notification from uCode that card's power state is changing
1194 * due to software, hardware, or critical temperature RFKILL */
1195 static void iwl4965_rx_card_state_notif(struct iwl_priv *priv,
1196 struct iwl_rx_mem_buffer *rxb)
1197 {
1198 struct iwl_rx_packet *pkt = (struct iwl_rx_packet *)rxb->skb->data;
1199 u32 flags = le32_to_cpu(pkt->u.card_state_notif.flags);
1200 unsigned long status = priv->status;
1201
1202 IWL_DEBUG_RF_KILL("Card state received: HW:%s SW:%s\n",
1203 (flags & HW_CARD_DISABLED) ? "Kill" : "On",
1204 (flags & SW_CARD_DISABLED) ? "Kill" : "On");
1205
1206 if (flags & (SW_CARD_DISABLED | HW_CARD_DISABLED |
1207 RF_CARD_DISABLED)) {
1208
1209 iwl_write32(priv, CSR_UCODE_DRV_GP1_SET,
1210 CSR_UCODE_DRV_GP1_BIT_CMD_BLOCKED);
1211
1212 if (!iwl_grab_nic_access(priv)) {
1213 iwl_write_direct32(
1214 priv, HBUS_TARG_MBX_C,
1215 HBUS_TARG_MBX_C_REG_BIT_CMD_BLOCKED);
1216
1217 iwl_release_nic_access(priv);
1218 }
1219
1220 if (!(flags & RXON_CARD_DISABLED)) {
1221 iwl_write32(priv, CSR_UCODE_DRV_GP1_CLR,
1222 CSR_UCODE_DRV_GP1_BIT_CMD_BLOCKED);
1223 if (!iwl_grab_nic_access(priv)) {
1224 iwl_write_direct32(
1225 priv, HBUS_TARG_MBX_C,
1226 HBUS_TARG_MBX_C_REG_BIT_CMD_BLOCKED);
1227
1228 iwl_release_nic_access(priv);
1229 }
1230 }
1231
1232 if (flags & RF_CARD_DISABLED) {
1233 iwl_write32(priv, CSR_UCODE_DRV_GP1_SET,
1234 CSR_UCODE_DRV_GP1_REG_BIT_CT_KILL_EXIT);
1235 iwl_read32(priv, CSR_UCODE_DRV_GP1);
1236 if (!iwl_grab_nic_access(priv))
1237 iwl_release_nic_access(priv);
1238 }
1239 }
1240
1241 if (flags & HW_CARD_DISABLED)
1242 set_bit(STATUS_RF_KILL_HW, &priv->status);
1243 else
1244 clear_bit(STATUS_RF_KILL_HW, &priv->status);
1245
1246
1247 if (flags & SW_CARD_DISABLED)
1248 set_bit(STATUS_RF_KILL_SW, &priv->status);
1249 else
1250 clear_bit(STATUS_RF_KILL_SW, &priv->status);
1251
1252 if (!(flags & RXON_CARD_DISABLED))
1253 iwl_scan_cancel(priv);
1254
1255 if ((test_bit(STATUS_RF_KILL_HW, &status) !=
1256 test_bit(STATUS_RF_KILL_HW, &priv->status)) ||
1257 (test_bit(STATUS_RF_KILL_SW, &status) !=
1258 test_bit(STATUS_RF_KILL_SW, &priv->status)))
1259 queue_work(priv->workqueue, &priv->rf_kill);
1260 else
1261 wake_up_interruptible(&priv->wait_command_queue);
1262 }
1263
1264 int iwl4965_set_pwr_src(struct iwl_priv *priv, enum iwl_pwr_src src)
1265 {
1266 int ret;
1267 unsigned long flags;
1268
1269 spin_lock_irqsave(&priv->lock, flags);
1270 ret = iwl_grab_nic_access(priv);
1271 if (ret)
1272 goto err;
1273
1274 if (src == IWL_PWR_SRC_VAUX) {
1275 u32 val;
1276 ret = pci_read_config_dword(priv->pci_dev, PCI_CFG_POWER_SOURCE,
1277 &val);
1278
1279 if (val & PCI_CFG_PMC_PME_FROM_D3COLD_SUPPORT)
1280 iwl_set_bits_mask_prph(priv, APMG_PS_CTRL_REG,
1281 APMG_PS_CTRL_VAL_PWR_SRC_VAUX,
1282 ~APMG_PS_CTRL_MSK_PWR_SRC);
1283 } else {
1284 iwl_set_bits_mask_prph(priv, APMG_PS_CTRL_REG,
1285 APMG_PS_CTRL_VAL_PWR_SRC_VMAIN,
1286 ~APMG_PS_CTRL_MSK_PWR_SRC);
1287 }
1288
1289 iwl_release_nic_access(priv);
1290 err:
1291 spin_unlock_irqrestore(&priv->lock, flags);
1292 return ret;
1293 }
1294
1295 /**
1296 * iwl4965_setup_rx_handlers - Initialize Rx handler callbacks
1297 *
1298 * Setup the RX handlers for each of the reply types sent from the uCode
1299 * to the host.
1300 *
1301 * This function chains into the hardware specific files for them to setup
1302 * any hardware specific handlers as well.
1303 */
1304 static void iwl_setup_rx_handlers(struct iwl_priv *priv)
1305 {
1306 priv->rx_handlers[REPLY_ALIVE] = iwl_rx_reply_alive;
1307 priv->rx_handlers[REPLY_ERROR] = iwl4965_rx_reply_error;
1308 priv->rx_handlers[CHANNEL_SWITCH_NOTIFICATION] = iwl4965_rx_csa;
1309 priv->rx_handlers[SPECTRUM_MEASURE_NOTIFICATION] =
1310 iwl4965_rx_spectrum_measure_notif;
1311 priv->rx_handlers[PM_SLEEP_NOTIFICATION] = iwl4965_rx_pm_sleep_notif;
1312 priv->rx_handlers[PM_DEBUG_STATISTIC_NOTIFIC] =
1313 iwl4965_rx_pm_debug_statistics_notif;
1314 priv->rx_handlers[BEACON_NOTIFICATION] = iwl4965_rx_beacon_notif;
1315
1316 /*
1317 * The same handler is used for both the REPLY to a discrete
1318 * statistics request from the host as well as for the periodic
1319 * statistics notifications (after received beacons) from the uCode.
1320 */
1321 priv->rx_handlers[REPLY_STATISTICS_CMD] = iwl_rx_statistics;
1322 priv->rx_handlers[STATISTICS_NOTIFICATION] = iwl_rx_statistics;
1323
1324 iwl_setup_rx_scan_handlers(priv);
1325
1326 /* status change handler */
1327 priv->rx_handlers[CARD_STATE_NOTIFICATION] = iwl4965_rx_card_state_notif;
1328
1329 priv->rx_handlers[MISSED_BEACONS_NOTIFICATION] =
1330 iwl_rx_missed_beacon_notif;
1331 /* Rx handlers */
1332 priv->rx_handlers[REPLY_RX_PHY_CMD] = iwl_rx_reply_rx_phy;
1333 priv->rx_handlers[REPLY_RX_MPDU_CMD] = iwl_rx_reply_rx;
1334 /* block ack */
1335 priv->rx_handlers[REPLY_COMPRESSED_BA] = iwl_rx_reply_compressed_ba;
1336 /* Set up hardware specific Rx handlers */
1337 priv->cfg->ops->lib->rx_handler_setup(priv);
1338 }
1339
1340 /*
1341 * this should be called while priv->lock is locked
1342 */
1343 static void __iwl_rx_replenish(struct iwl_priv *priv)
1344 {
1345 iwl_rx_allocate(priv);
1346 iwl_rx_queue_restock(priv);
1347 }
1348
1349
1350 /**
1351 * iwl_rx_handle - Main entry function for receiving responses from uCode
1352 *
1353 * Uses the priv->rx_handlers callback function array to invoke
1354 * the appropriate handlers, including command responses,
1355 * frame-received notifications, and other notifications.
1356 */
1357 void iwl_rx_handle(struct iwl_priv *priv)
1358 {
1359 struct iwl_rx_mem_buffer *rxb;
1360 struct iwl_rx_packet *pkt;
1361 struct iwl_rx_queue *rxq = &priv->rxq;
1362 u32 r, i;
1363 int reclaim;
1364 unsigned long flags;
1365 u8 fill_rx = 0;
1366 u32 count = 8;
1367
1368 /* uCode's read index (stored in shared DRAM) indicates the last Rx
1369 * buffer that the driver may process (last buffer filled by ucode). */
1370 r = priv->cfg->ops->lib->shared_mem_rx_idx(priv);
1371 i = rxq->read;
1372
1373 /* Rx interrupt, but nothing sent from uCode */
1374 if (i == r)
1375 IWL_DEBUG(IWL_DL_RX, "r = %d, i = %d\n", r, i);
1376
1377 if (iwl_rx_queue_space(rxq) > (RX_QUEUE_SIZE / 2))
1378 fill_rx = 1;
1379
1380 while (i != r) {
1381 rxb = rxq->queue[i];
1382
1383 /* If an RXB doesn't have a Rx queue slot associated with it,
1384 * then a bug has been introduced in the queue refilling
1385 * routines -- catch it here */
1386 BUG_ON(rxb == NULL);
1387
1388 rxq->queue[i] = NULL;
1389
1390 pci_dma_sync_single_for_cpu(priv->pci_dev, rxb->dma_addr,
1391 priv->hw_params.rx_buf_size,
1392 PCI_DMA_FROMDEVICE);
1393 pkt = (struct iwl_rx_packet *)rxb->skb->data;
1394
1395 /* Reclaim a command buffer only if this packet is a response
1396 * to a (driver-originated) command.
1397 * If the packet (e.g. Rx frame) originated from uCode,
1398 * there is no command buffer to reclaim.
1399 * Ucode should set SEQ_RX_FRAME bit if ucode-originated,
1400 * but apparently a few don't get set; catch them here. */
1401 reclaim = !(pkt->hdr.sequence & SEQ_RX_FRAME) &&
1402 (pkt->hdr.cmd != REPLY_RX_PHY_CMD) &&
1403 (pkt->hdr.cmd != REPLY_RX) &&
1404 (pkt->hdr.cmd != REPLY_COMPRESSED_BA) &&
1405 (pkt->hdr.cmd != STATISTICS_NOTIFICATION) &&
1406 (pkt->hdr.cmd != REPLY_TX);
1407
1408 /* Based on type of command response or notification,
1409 * handle those that need handling via function in
1410 * rx_handlers table. See iwl4965_setup_rx_handlers() */
1411 if (priv->rx_handlers[pkt->hdr.cmd]) {
1412 IWL_DEBUG(IWL_DL_RX, "r = %d, i = %d, %s, 0x%02x\n", r,
1413 i, get_cmd_string(pkt->hdr.cmd), pkt->hdr.cmd);
1414 priv->rx_handlers[pkt->hdr.cmd] (priv, rxb);
1415 } else {
1416 /* No handling needed */
1417 IWL_DEBUG(IWL_DL_RX,
1418 "r %d i %d No handler needed for %s, 0x%02x\n",
1419 r, i, get_cmd_string(pkt->hdr.cmd),
1420 pkt->hdr.cmd);
1421 }
1422
1423 if (reclaim) {
1424 /* Invoke any callbacks, transfer the skb to caller, and
1425 * fire off the (possibly) blocking iwl_send_cmd()
1426 * as we reclaim the driver command queue */
1427 if (rxb && rxb->skb)
1428 iwl_tx_cmd_complete(priv, rxb);
1429 else
1430 IWL_WARNING("Claim null rxb?\n");
1431 }
1432
1433 /* For now we just don't re-use anything. We can tweak this
1434 * later to try and re-use notification packets and SKBs that
1435 * fail to Rx correctly */
1436 if (rxb->skb != NULL) {
1437 priv->alloc_rxb_skb--;
1438 dev_kfree_skb_any(rxb->skb);
1439 rxb->skb = NULL;
1440 }
1441
1442 pci_unmap_single(priv->pci_dev, rxb->dma_addr,
1443 priv->hw_params.rx_buf_size,
1444 PCI_DMA_FROMDEVICE);
1445 spin_lock_irqsave(&rxq->lock, flags);
1446 list_add_tail(&rxb->list, &priv->rxq.rx_used);
1447 spin_unlock_irqrestore(&rxq->lock, flags);
1448 i = (i + 1) & RX_QUEUE_MASK;
1449 /* If there are a lot of unused frames,
1450 * restock the Rx queue so ucode wont assert. */
1451 if (fill_rx) {
1452 count++;
1453 if (count >= 8) {
1454 priv->rxq.read = i;
1455 __iwl_rx_replenish(priv);
1456 count = 0;
1457 }
1458 }
1459 }
1460
1461 /* Backtrack one entry */
1462 priv->rxq.read = i;
1463 iwl_rx_queue_restock(priv);
1464 }
1465
1466 #ifdef CONFIG_IWLWIFI_DEBUG
1467 static void iwl4965_print_rx_config_cmd(struct iwl_priv *priv)
1468 {
1469 struct iwl_rxon_cmd *rxon = &priv->staging_rxon;
1470 DECLARE_MAC_BUF(mac);
1471
1472 IWL_DEBUG_RADIO("RX CONFIG:\n");
1473 iwl_print_hex_dump(priv, IWL_DL_RADIO, (u8 *) rxon, sizeof(*rxon));
1474 IWL_DEBUG_RADIO("u16 channel: 0x%x\n", le16_to_cpu(rxon->channel));
1475 IWL_DEBUG_RADIO("u32 flags: 0x%08X\n", le32_to_cpu(rxon->flags));
1476 IWL_DEBUG_RADIO("u32 filter_flags: 0x%08x\n",
1477 le32_to_cpu(rxon->filter_flags));
1478 IWL_DEBUG_RADIO("u8 dev_type: 0x%x\n", rxon->dev_type);
1479 IWL_DEBUG_RADIO("u8 ofdm_basic_rates: 0x%02x\n",
1480 rxon->ofdm_basic_rates);
1481 IWL_DEBUG_RADIO("u8 cck_basic_rates: 0x%02x\n", rxon->cck_basic_rates);
1482 IWL_DEBUG_RADIO("u8[6] node_addr: %s\n",
1483 print_mac(mac, rxon->node_addr));
1484 IWL_DEBUG_RADIO("u8[6] bssid_addr: %s\n",
1485 print_mac(mac, rxon->bssid_addr));
1486 IWL_DEBUG_RADIO("u16 assoc_id: 0x%x\n", le16_to_cpu(rxon->assoc_id));
1487 }
1488 #endif
1489
1490 static void iwl4965_enable_interrupts(struct iwl_priv *priv)
1491 {
1492 IWL_DEBUG_ISR("Enabling interrupts\n");
1493 set_bit(STATUS_INT_ENABLED, &priv->status);
1494 iwl_write32(priv, CSR_INT_MASK, CSR_INI_SET_MASK);
1495 }
1496
1497 /* call this function to flush any scheduled tasklet */
1498 static inline void iwl_synchronize_irq(struct iwl_priv *priv)
1499 {
1500 /* wait to make sure we flush pedding tasklet*/
1501 synchronize_irq(priv->pci_dev->irq);
1502 tasklet_kill(&priv->irq_tasklet);
1503 }
1504
1505 static inline void iwl4965_disable_interrupts(struct iwl_priv *priv)
1506 {
1507 clear_bit(STATUS_INT_ENABLED, &priv->status);
1508
1509 /* disable interrupts from uCode/NIC to host */
1510 iwl_write32(priv, CSR_INT_MASK, 0x00000000);
1511
1512 /* acknowledge/clear/reset any interrupts still pending
1513 * from uCode or flow handler (Rx/Tx DMA) */
1514 iwl_write32(priv, CSR_INT, 0xffffffff);
1515 iwl_write32(priv, CSR_FH_INT_STATUS, 0xffffffff);
1516 IWL_DEBUG_ISR("Disabled interrupts\n");
1517 }
1518
1519
1520 /**
1521 * iwl4965_irq_handle_error - called for HW or SW error interrupt from card
1522 */
1523 static void iwl4965_irq_handle_error(struct iwl_priv *priv)
1524 {
1525 /* Set the FW error flag -- cleared on iwl4965_down */
1526 set_bit(STATUS_FW_ERROR, &priv->status);
1527
1528 /* Cancel currently queued command. */
1529 clear_bit(STATUS_HCMD_ACTIVE, &priv->status);
1530
1531 #ifdef CONFIG_IWLWIFI_DEBUG
1532 if (priv->debug_level & IWL_DL_FW_ERRORS) {
1533 iwl_dump_nic_error_log(priv);
1534 iwl_dump_nic_event_log(priv);
1535 iwl4965_print_rx_config_cmd(priv);
1536 }
1537 #endif
1538
1539 wake_up_interruptible(&priv->wait_command_queue);
1540
1541 /* Keep the restart process from trying to send host
1542 * commands by clearing the INIT status bit */
1543 clear_bit(STATUS_READY, &priv->status);
1544
1545 if (!test_bit(STATUS_EXIT_PENDING, &priv->status)) {
1546 IWL_DEBUG(IWL_DL_FW_ERRORS,
1547 "Restarting adapter due to uCode error.\n");
1548
1549 if (iwl_is_associated(priv)) {
1550 memcpy(&priv->recovery_rxon, &priv->active_rxon,
1551 sizeof(priv->recovery_rxon));
1552 priv->error_recovering = 1;
1553 }
1554 if (priv->cfg->mod_params->restart_fw)
1555 queue_work(priv->workqueue, &priv->restart);
1556 }
1557 }
1558
1559 static void iwl4965_error_recovery(struct iwl_priv *priv)
1560 {
1561 unsigned long flags;
1562
1563 memcpy(&priv->staging_rxon, &priv->recovery_rxon,
1564 sizeof(priv->staging_rxon));
1565 priv->staging_rxon.filter_flags &= ~RXON_FILTER_ASSOC_MSK;
1566 iwl4965_commit_rxon(priv);
1567
1568 iwl_rxon_add_station(priv, priv->bssid, 1);
1569
1570 spin_lock_irqsave(&priv->lock, flags);
1571 priv->assoc_id = le16_to_cpu(priv->staging_rxon.assoc_id);
1572 priv->error_recovering = 0;
1573 spin_unlock_irqrestore(&priv->lock, flags);
1574 }
1575
1576 static void iwl4965_irq_tasklet(struct iwl_priv *priv)
1577 {
1578 u32 inta, handled = 0;
1579 u32 inta_fh;
1580 unsigned long flags;
1581 #ifdef CONFIG_IWLWIFI_DEBUG
1582 u32 inta_mask;
1583 #endif
1584
1585 spin_lock_irqsave(&priv->lock, flags);
1586
1587 /* Ack/clear/reset pending uCode interrupts.
1588 * Note: Some bits in CSR_INT are "OR" of bits in CSR_FH_INT_STATUS,
1589 * and will clear only when CSR_FH_INT_STATUS gets cleared. */
1590 inta = iwl_read32(priv, CSR_INT);
1591 iwl_write32(priv, CSR_INT, inta);
1592
1593 /* Ack/clear/reset pending flow-handler (DMA) interrupts.
1594 * Any new interrupts that happen after this, either while we're
1595 * in this tasklet, or later, will show up in next ISR/tasklet. */
1596 inta_fh = iwl_read32(priv, CSR_FH_INT_STATUS);
1597 iwl_write32(priv, CSR_FH_INT_STATUS, inta_fh);
1598
1599 #ifdef CONFIG_IWLWIFI_DEBUG
1600 if (priv->debug_level & IWL_DL_ISR) {
1601 /* just for debug */
1602 inta_mask = iwl_read32(priv, CSR_INT_MASK);
1603 IWL_DEBUG_ISR("inta 0x%08x, enabled 0x%08x, fh 0x%08x\n",
1604 inta, inta_mask, inta_fh);
1605 }
1606 #endif
1607
1608 /* Since CSR_INT and CSR_FH_INT_STATUS reads and clears are not
1609 * atomic, make sure that inta covers all the interrupts that
1610 * we've discovered, even if FH interrupt came in just after
1611 * reading CSR_INT. */
1612 if (inta_fh & CSR49_FH_INT_RX_MASK)
1613 inta |= CSR_INT_BIT_FH_RX;
1614 if (inta_fh & CSR49_FH_INT_TX_MASK)
1615 inta |= CSR_INT_BIT_FH_TX;
1616
1617 /* Now service all interrupt bits discovered above. */
1618 if (inta & CSR_INT_BIT_HW_ERR) {
1619 IWL_ERROR("Microcode HW error detected. Restarting.\n");
1620
1621 /* Tell the device to stop sending interrupts */
1622 iwl4965_disable_interrupts(priv);
1623
1624 iwl4965_irq_handle_error(priv);
1625
1626 handled |= CSR_INT_BIT_HW_ERR;
1627
1628 spin_unlock_irqrestore(&priv->lock, flags);
1629
1630 return;
1631 }
1632
1633 #ifdef CONFIG_IWLWIFI_DEBUG
1634 if (priv->debug_level & (IWL_DL_ISR)) {
1635 /* NIC fires this, but we don't use it, redundant with WAKEUP */
1636 if (inta & CSR_INT_BIT_SCD)
1637 IWL_DEBUG_ISR("Scheduler finished to transmit "
1638 "the frame/frames.\n");
1639
1640 /* Alive notification via Rx interrupt will do the real work */
1641 if (inta & CSR_INT_BIT_ALIVE)
1642 IWL_DEBUG_ISR("Alive interrupt\n");
1643 }
1644 #endif
1645 /* Safely ignore these bits for debug checks below */
1646 inta &= ~(CSR_INT_BIT_SCD | CSR_INT_BIT_ALIVE);
1647
1648 /* HW RF KILL switch toggled */
1649 if (inta & CSR_INT_BIT_RF_KILL) {
1650 int hw_rf_kill = 0;
1651 if (!(iwl_read32(priv, CSR_GP_CNTRL) &
1652 CSR_GP_CNTRL_REG_FLAG_HW_RF_KILL_SW))
1653 hw_rf_kill = 1;
1654
1655 IWL_DEBUG(IWL_DL_RF_KILL, "RF_KILL bit toggled to %s.\n",
1656 hw_rf_kill ? "disable radio":"enable radio");
1657
1658 /* driver only loads ucode once setting the interface up.
1659 * the driver as well won't allow loading if RFKILL is set
1660 * therefore no need to restart the driver from this handler
1661 */
1662 if (!hw_rf_kill && !test_bit(STATUS_ALIVE, &priv->status))
1663 clear_bit(STATUS_RF_KILL_HW, &priv->status);
1664
1665 handled |= CSR_INT_BIT_RF_KILL;
1666 }
1667
1668 /* Chip got too hot and stopped itself */
1669 if (inta & CSR_INT_BIT_CT_KILL) {
1670 IWL_ERROR("Microcode CT kill error detected.\n");
1671 handled |= CSR_INT_BIT_CT_KILL;
1672 }
1673
1674 /* Error detected by uCode */
1675 if (inta & CSR_INT_BIT_SW_ERR) {
1676 IWL_ERROR("Microcode SW error detected. Restarting 0x%X.\n",
1677 inta);
1678 iwl4965_irq_handle_error(priv);
1679 handled |= CSR_INT_BIT_SW_ERR;
1680 }
1681
1682 /* uCode wakes up after power-down sleep */
1683 if (inta & CSR_INT_BIT_WAKEUP) {
1684 IWL_DEBUG_ISR("Wakeup interrupt\n");
1685 iwl_rx_queue_update_write_ptr(priv, &priv->rxq);
1686 iwl_txq_update_write_ptr(priv, &priv->txq[0]);
1687 iwl_txq_update_write_ptr(priv, &priv->txq[1]);
1688 iwl_txq_update_write_ptr(priv, &priv->txq[2]);
1689 iwl_txq_update_write_ptr(priv, &priv->txq[3]);
1690 iwl_txq_update_write_ptr(priv, &priv->txq[4]);
1691 iwl_txq_update_write_ptr(priv, &priv->txq[5]);
1692
1693 handled |= CSR_INT_BIT_WAKEUP;
1694 }
1695
1696 /* All uCode command responses, including Tx command responses,
1697 * Rx "responses" (frame-received notification), and other
1698 * notifications from uCode come through here*/
1699 if (inta & (CSR_INT_BIT_FH_RX | CSR_INT_BIT_SW_RX)) {
1700 iwl_rx_handle(priv);
1701 handled |= (CSR_INT_BIT_FH_RX | CSR_INT_BIT_SW_RX);
1702 }
1703
1704 if (inta & CSR_INT_BIT_FH_TX) {
1705 IWL_DEBUG_ISR("Tx interrupt\n");
1706 handled |= CSR_INT_BIT_FH_TX;
1707 /* FH finished to write, send event */
1708 priv->ucode_write_complete = 1;
1709 wake_up_interruptible(&priv->wait_command_queue);
1710 }
1711
1712 if (inta & ~handled)
1713 IWL_ERROR("Unhandled INTA bits 0x%08x\n", inta & ~handled);
1714
1715 if (inta & ~CSR_INI_SET_MASK) {
1716 IWL_WARNING("Disabled INTA bits 0x%08x were pending\n",
1717 inta & ~CSR_INI_SET_MASK);
1718 IWL_WARNING(" with FH_INT = 0x%08x\n", inta_fh);
1719 }
1720
1721 /* Re-enable all interrupts */
1722 /* only Re-enable if diabled by irq */
1723 if (test_bit(STATUS_INT_ENABLED, &priv->status))
1724 iwl4965_enable_interrupts(priv);
1725
1726 #ifdef CONFIG_IWLWIFI_DEBUG
1727 if (priv->debug_level & (IWL_DL_ISR)) {
1728 inta = iwl_read32(priv, CSR_INT);
1729 inta_mask = iwl_read32(priv, CSR_INT_MASK);
1730 inta_fh = iwl_read32(priv, CSR_FH_INT_STATUS);
1731 IWL_DEBUG_ISR("End inta 0x%08x, enabled 0x%08x, fh 0x%08x, "
1732 "flags 0x%08lx\n", inta, inta_mask, inta_fh, flags);
1733 }
1734 #endif
1735 spin_unlock_irqrestore(&priv->lock, flags);
1736 }
1737
1738 static irqreturn_t iwl4965_isr(int irq, void *data)
1739 {
1740 struct iwl_priv *priv = data;
1741 u32 inta, inta_mask;
1742 u32 inta_fh;
1743 if (!priv)
1744 return IRQ_NONE;
1745
1746 spin_lock(&priv->lock);
1747
1748 /* Disable (but don't clear!) interrupts here to avoid
1749 * back-to-back ISRs and sporadic interrupts from our NIC.
1750 * If we have something to service, the tasklet will re-enable ints.
1751 * If we *don't* have something, we'll re-enable before leaving here. */
1752 inta_mask = iwl_read32(priv, CSR_INT_MASK); /* just for debug */
1753 iwl_write32(priv, CSR_INT_MASK, 0x00000000);
1754
1755 /* Discover which interrupts are active/pending */
1756 inta = iwl_read32(priv, CSR_INT);
1757 inta_fh = iwl_read32(priv, CSR_FH_INT_STATUS);
1758
1759 /* Ignore interrupt if there's nothing in NIC to service.
1760 * This may be due to IRQ shared with another device,
1761 * or due to sporadic interrupts thrown from our NIC. */
1762 if (!inta && !inta_fh) {
1763 IWL_DEBUG_ISR("Ignore interrupt, inta == 0, inta_fh == 0\n");
1764 goto none;
1765 }
1766
1767 if ((inta == 0xFFFFFFFF) || ((inta & 0xFFFFFFF0) == 0xa5a5a5a0)) {
1768 /* Hardware disappeared. It might have already raised
1769 * an interrupt */
1770 IWL_WARNING("HARDWARE GONE?? INTA == 0x%080x\n", inta);
1771 goto unplugged;
1772 }
1773
1774 IWL_DEBUG_ISR("ISR inta 0x%08x, enabled 0x%08x, fh 0x%08x\n",
1775 inta, inta_mask, inta_fh);
1776
1777 inta &= ~CSR_INT_BIT_SCD;
1778
1779 /* iwl4965_irq_tasklet() will service interrupts and re-enable them */
1780 if (likely(inta || inta_fh))
1781 tasklet_schedule(&priv->irq_tasklet);
1782
1783 unplugged:
1784 spin_unlock(&priv->lock);
1785 return IRQ_HANDLED;
1786
1787 none:
1788 /* re-enable interrupts here since we don't have anything to service. */
1789 /* only Re-enable if diabled by irq */
1790 if (test_bit(STATUS_INT_ENABLED, &priv->status))
1791 iwl4965_enable_interrupts(priv);
1792 spin_unlock(&priv->lock);
1793 return IRQ_NONE;
1794 }
1795
1796 /******************************************************************************
1797 *
1798 * uCode download functions
1799 *
1800 ******************************************************************************/
1801
1802 static void iwl4965_dealloc_ucode_pci(struct iwl_priv *priv)
1803 {
1804 iwl_free_fw_desc(priv->pci_dev, &priv->ucode_code);
1805 iwl_free_fw_desc(priv->pci_dev, &priv->ucode_data);
1806 iwl_free_fw_desc(priv->pci_dev, &priv->ucode_data_backup);
1807 iwl_free_fw_desc(priv->pci_dev, &priv->ucode_init);
1808 iwl_free_fw_desc(priv->pci_dev, &priv->ucode_init_data);
1809 iwl_free_fw_desc(priv->pci_dev, &priv->ucode_boot);
1810 }
1811
1812 static void iwl4965_nic_start(struct iwl_priv *priv)
1813 {
1814 /* Remove all resets to allow NIC to operate */
1815 iwl_write32(priv, CSR_RESET, 0);
1816 }
1817
1818
1819 /**
1820 * iwl4965_read_ucode - Read uCode images from disk file.
1821 *
1822 * Copy into buffers for card to fetch via bus-mastering
1823 */
1824 static int iwl4965_read_ucode(struct iwl_priv *priv)
1825 {
1826 struct iwl_ucode *ucode;
1827 int ret;
1828 const struct firmware *ucode_raw;
1829 const char *name = priv->cfg->fw_name;
1830 u8 *src;
1831 size_t len;
1832 u32 ver, inst_size, data_size, init_size, init_data_size, boot_size;
1833
1834 /* Ask kernel firmware_class module to get the boot firmware off disk.
1835 * request_firmware() is synchronous, file is in memory on return. */
1836 ret = request_firmware(&ucode_raw, name, &priv->pci_dev->dev);
1837 if (ret < 0) {
1838 IWL_ERROR("%s firmware file req failed: Reason %d\n",
1839 name, ret);
1840 goto error;
1841 }
1842
1843 IWL_DEBUG_INFO("Got firmware '%s' file (%zd bytes) from disk\n",
1844 name, ucode_raw->size);
1845
1846 /* Make sure that we got at least our header! */
1847 if (ucode_raw->size < sizeof(*ucode)) {
1848 IWL_ERROR("File size way too small!\n");
1849 ret = -EINVAL;
1850 goto err_release;
1851 }
1852
1853 /* Data from ucode file: header followed by uCode images */
1854 ucode = (void *)ucode_raw->data;
1855
1856 ver = le32_to_cpu(ucode->ver);
1857 inst_size = le32_to_cpu(ucode->inst_size);
1858 data_size = le32_to_cpu(ucode->data_size);
1859 init_size = le32_to_cpu(ucode->init_size);
1860 init_data_size = le32_to_cpu(ucode->init_data_size);
1861 boot_size = le32_to_cpu(ucode->boot_size);
1862
1863 IWL_DEBUG_INFO("f/w package hdr ucode version = 0x%x\n", ver);
1864 IWL_DEBUG_INFO("f/w package hdr runtime inst size = %u\n",
1865 inst_size);
1866 IWL_DEBUG_INFO("f/w package hdr runtime data size = %u\n",
1867 data_size);
1868 IWL_DEBUG_INFO("f/w package hdr init inst size = %u\n",
1869 init_size);
1870 IWL_DEBUG_INFO("f/w package hdr init data size = %u\n",
1871 init_data_size);
1872 IWL_DEBUG_INFO("f/w package hdr boot inst size = %u\n",
1873 boot_size);
1874
1875 /* Verify size of file vs. image size info in file's header */
1876 if (ucode_raw->size < sizeof(*ucode) +
1877 inst_size + data_size + init_size +
1878 init_data_size + boot_size) {
1879
1880 IWL_DEBUG_INFO("uCode file size %d too small\n",
1881 (int)ucode_raw->size);
1882 ret = -EINVAL;
1883 goto err_release;
1884 }
1885
1886 /* Verify that uCode images will fit in card's SRAM */
1887 if (inst_size > priv->hw_params.max_inst_size) {
1888 IWL_DEBUG_INFO("uCode instr len %d too large to fit in\n",
1889 inst_size);
1890 ret = -EINVAL;
1891 goto err_release;
1892 }
1893
1894 if (data_size > priv->hw_params.max_data_size) {
1895 IWL_DEBUG_INFO("uCode data len %d too large to fit in\n",
1896 data_size);
1897 ret = -EINVAL;
1898 goto err_release;
1899 }
1900 if (init_size > priv->hw_params.max_inst_size) {
1901 IWL_DEBUG_INFO
1902 ("uCode init instr len %d too large to fit in\n",
1903 init_size);
1904 ret = -EINVAL;
1905 goto err_release;
1906 }
1907 if (init_data_size > priv->hw_params.max_data_size) {
1908 IWL_DEBUG_INFO
1909 ("uCode init data len %d too large to fit in\n",
1910 init_data_size);
1911 ret = -EINVAL;
1912 goto err_release;
1913 }
1914 if (boot_size > priv->hw_params.max_bsm_size) {
1915 IWL_DEBUG_INFO
1916 ("uCode boot instr len %d too large to fit in\n",
1917 boot_size);
1918 ret = -EINVAL;
1919 goto err_release;
1920 }
1921
1922 /* Allocate ucode buffers for card's bus-master loading ... */
1923
1924 /* Runtime instructions and 2 copies of data:
1925 * 1) unmodified from disk
1926 * 2) backup cache for save/restore during power-downs */
1927 priv->ucode_code.len = inst_size;
1928 iwl_alloc_fw_desc(priv->pci_dev, &priv->ucode_code);
1929
1930 priv->ucode_data.len = data_size;
1931 iwl_alloc_fw_desc(priv->pci_dev, &priv->ucode_data);
1932
1933 priv->ucode_data_backup.len = data_size;
1934 iwl_alloc_fw_desc(priv->pci_dev, &priv->ucode_data_backup);
1935
1936 /* Initialization instructions and data */
1937 if (init_size && init_data_size) {
1938 priv->ucode_init.len = init_size;
1939 iwl_alloc_fw_desc(priv->pci_dev, &priv->ucode_init);
1940
1941 priv->ucode_init_data.len = init_data_size;
1942 iwl_alloc_fw_desc(priv->pci_dev, &priv->ucode_init_data);
1943
1944 if (!priv->ucode_init.v_addr || !priv->ucode_init_data.v_addr)
1945 goto err_pci_alloc;
1946 }
1947
1948 /* Bootstrap (instructions only, no data) */
1949 if (boot_size) {
1950 priv->ucode_boot.len = boot_size;
1951 iwl_alloc_fw_desc(priv->pci_dev, &priv->ucode_boot);
1952
1953 if (!priv->ucode_boot.v_addr)
1954 goto err_pci_alloc;
1955 }
1956
1957 /* Copy images into buffers for card's bus-master reads ... */
1958
1959 /* Runtime instructions (first block of data in file) */
1960 src = &ucode->data[0];
1961 len = priv->ucode_code.len;
1962 IWL_DEBUG_INFO("Copying (but not loading) uCode instr len %Zd\n", len);
1963 memcpy(priv->ucode_code.v_addr, src, len);
1964 IWL_DEBUG_INFO("uCode instr buf vaddr = 0x%p, paddr = 0x%08x\n",
1965 priv->ucode_code.v_addr, (u32)priv->ucode_code.p_addr);
1966
1967 /* Runtime data (2nd block)
1968 * NOTE: Copy into backup buffer will be done in iwl4965_up() */
1969 src = &ucode->data[inst_size];
1970 len = priv->ucode_data.len;
1971 IWL_DEBUG_INFO("Copying (but not loading) uCode data len %Zd\n", len);
1972 memcpy(priv->ucode_data.v_addr, src, len);
1973 memcpy(priv->ucode_data_backup.v_addr, src, len);
1974
1975 /* Initialization instructions (3rd block) */
1976 if (init_size) {
1977 src = &ucode->data[inst_size + data_size];
1978 len = priv->ucode_init.len;
1979 IWL_DEBUG_INFO("Copying (but not loading) init instr len %Zd\n",
1980 len);
1981 memcpy(priv->ucode_init.v_addr, src, len);
1982 }
1983
1984 /* Initialization data (4th block) */
1985 if (init_data_size) {
1986 src = &ucode->data[inst_size + data_size + init_size];
1987 len = priv->ucode_init_data.len;
1988 IWL_DEBUG_INFO("Copying (but not loading) init data len %Zd\n",
1989 len);
1990 memcpy(priv->ucode_init_data.v_addr, src, len);
1991 }
1992
1993 /* Bootstrap instructions (5th block) */
1994 src = &ucode->data[inst_size + data_size + init_size + init_data_size];
1995 len = priv->ucode_boot.len;
1996 IWL_DEBUG_INFO("Copying (but not loading) boot instr len %Zd\n", len);
1997 memcpy(priv->ucode_boot.v_addr, src, len);
1998
1999 /* We have our copies now, allow OS release its copies */
2000 release_firmware(ucode_raw);
2001 return 0;
2002
2003 err_pci_alloc:
2004 IWL_ERROR("failed to allocate pci memory\n");
2005 ret = -ENOMEM;
2006 iwl4965_dealloc_ucode_pci(priv);
2007
2008 err_release:
2009 release_firmware(ucode_raw);
2010
2011 error:
2012 return ret;
2013 }
2014
2015 /**
2016 * iwl_alive_start - called after REPLY_ALIVE notification received
2017 * from protocol/runtime uCode (initialization uCode's
2018 * Alive gets handled by iwl_init_alive_start()).
2019 */
2020 static void iwl_alive_start(struct iwl_priv *priv)
2021 {
2022 int ret = 0;
2023
2024 IWL_DEBUG_INFO("Runtime Alive received.\n");
2025
2026 if (priv->card_alive.is_valid != UCODE_VALID_OK) {
2027 /* We had an error bringing up the hardware, so take it
2028 * all the way back down so we can try again */
2029 IWL_DEBUG_INFO("Alive failed.\n");
2030 goto restart;
2031 }
2032
2033 /* Initialize uCode has loaded Runtime uCode ... verify inst image.
2034 * This is a paranoid check, because we would not have gotten the
2035 * "runtime" alive if code weren't properly loaded. */
2036 if (iwl_verify_ucode(priv)) {
2037 /* Runtime instruction load was bad;
2038 * take it all the way back down so we can try again */
2039 IWL_DEBUG_INFO("Bad runtime uCode load.\n");
2040 goto restart;
2041 }
2042
2043 iwl_clear_stations_table(priv);
2044 ret = priv->cfg->ops->lib->alive_notify(priv);
2045 if (ret) {
2046 IWL_WARNING("Could not complete ALIVE transition [ntf]: %d\n",
2047 ret);
2048 goto restart;
2049 }
2050
2051 /* After the ALIVE response, we can send host commands to 4965 uCode */
2052 set_bit(STATUS_ALIVE, &priv->status);
2053
2054 if (iwl_is_rfkill(priv))
2055 return;
2056
2057 ieee80211_wake_queues(priv->hw);
2058
2059 priv->active_rate = priv->rates_mask;
2060 priv->active_rate_basic = priv->rates_mask & IWL_BASIC_RATES_MASK;
2061
2062 if (iwl_is_associated(priv)) {
2063 struct iwl_rxon_cmd *active_rxon =
2064 (struct iwl_rxon_cmd *)&priv->active_rxon;
2065
2066 memcpy(&priv->staging_rxon, &priv->active_rxon,
2067 sizeof(priv->staging_rxon));
2068 active_rxon->filter_flags &= ~RXON_FILTER_ASSOC_MSK;
2069 } else {
2070 /* Initialize our rx_config data */
2071 iwl4965_connection_init_rx_config(priv);
2072 memcpy(priv->staging_rxon.node_addr, priv->mac_addr, ETH_ALEN);
2073 }
2074
2075 /* Configure Bluetooth device coexistence support */
2076 iwl4965_send_bt_config(priv);
2077
2078 iwl_reset_run_time_calib(priv);
2079
2080 /* Configure the adapter for unassociated operation */
2081 iwl4965_commit_rxon(priv);
2082
2083 /* At this point, the NIC is initialized and operational */
2084 iwl_rf_kill_ct_config(priv);
2085
2086 iwl_leds_register(priv);
2087
2088 IWL_DEBUG_INFO("ALIVE processing complete.\n");
2089 set_bit(STATUS_READY, &priv->status);
2090 wake_up_interruptible(&priv->wait_command_queue);
2091
2092 if (priv->error_recovering)
2093 iwl4965_error_recovery(priv);
2094
2095 iwl_power_update_mode(priv, 1);
2096 ieee80211_notify_mac(priv->hw, IEEE80211_NOTIFY_RE_ASSOC);
2097
2098 if (test_and_clear_bit(STATUS_MODE_PENDING, &priv->status))
2099 iwl4965_set_mode(priv, priv->iw_mode);
2100
2101 return;
2102
2103 restart:
2104 queue_work(priv->workqueue, &priv->restart);
2105 }
2106
2107 static void iwl_cancel_deferred_work(struct iwl_priv *priv);
2108
2109 static void __iwl4965_down(struct iwl_priv *priv)
2110 {
2111 unsigned long flags;
2112 int exit_pending = test_bit(STATUS_EXIT_PENDING, &priv->status);
2113
2114 IWL_DEBUG_INFO(DRV_NAME " is going down\n");
2115
2116 if (!exit_pending)
2117 set_bit(STATUS_EXIT_PENDING, &priv->status);
2118
2119 iwl_leds_unregister(priv);
2120
2121 iwl_clear_stations_table(priv);
2122
2123 /* Unblock any waiting calls */
2124 wake_up_interruptible_all(&priv->wait_command_queue);
2125
2126 /* Wipe out the EXIT_PENDING status bit if we are not actually
2127 * exiting the module */
2128 if (!exit_pending)
2129 clear_bit(STATUS_EXIT_PENDING, &priv->status);
2130
2131 /* stop and reset the on-board processor */
2132 iwl_write32(priv, CSR_RESET, CSR_RESET_REG_FLAG_NEVO_RESET);
2133
2134 /* tell the device to stop sending interrupts */
2135 spin_lock_irqsave(&priv->lock, flags);
2136 iwl4965_disable_interrupts(priv);
2137 spin_unlock_irqrestore(&priv->lock, flags);
2138 iwl_synchronize_irq(priv);
2139
2140 if (priv->mac80211_registered)
2141 ieee80211_stop_queues(priv->hw);
2142
2143 /* If we have not previously called iwl4965_init() then
2144 * clear all bits but the RF Kill and SUSPEND bits and return */
2145 if (!iwl_is_init(priv)) {
2146 priv->status = test_bit(STATUS_RF_KILL_HW, &priv->status) <<
2147 STATUS_RF_KILL_HW |
2148 test_bit(STATUS_RF_KILL_SW, &priv->status) <<
2149 STATUS_RF_KILL_SW |
2150 test_bit(STATUS_GEO_CONFIGURED, &priv->status) <<
2151 STATUS_GEO_CONFIGURED |
2152 test_bit(STATUS_IN_SUSPEND, &priv->status) <<
2153 STATUS_IN_SUSPEND |
2154 test_bit(STATUS_EXIT_PENDING, &priv->status) <<
2155 STATUS_EXIT_PENDING;
2156 goto exit;
2157 }
2158
2159 /* ...otherwise clear out all the status bits but the RF Kill and
2160 * SUSPEND bits and continue taking the NIC down. */
2161 priv->status &= test_bit(STATUS_RF_KILL_HW, &priv->status) <<
2162 STATUS_RF_KILL_HW |
2163 test_bit(STATUS_RF_KILL_SW, &priv->status) <<
2164 STATUS_RF_KILL_SW |
2165 test_bit(STATUS_GEO_CONFIGURED, &priv->status) <<
2166 STATUS_GEO_CONFIGURED |
2167 test_bit(STATUS_IN_SUSPEND, &priv->status) <<
2168 STATUS_IN_SUSPEND |
2169 test_bit(STATUS_FW_ERROR, &priv->status) <<
2170 STATUS_FW_ERROR |
2171 test_bit(STATUS_EXIT_PENDING, &priv->status) <<
2172 STATUS_EXIT_PENDING;
2173
2174 spin_lock_irqsave(&priv->lock, flags);
2175 iwl_clear_bit(priv, CSR_GP_CNTRL,
2176 CSR_GP_CNTRL_REG_FLAG_MAC_ACCESS_REQ);
2177 spin_unlock_irqrestore(&priv->lock, flags);
2178
2179 iwl_txq_ctx_stop(priv);
2180 iwl_rxq_stop(priv);
2181
2182 spin_lock_irqsave(&priv->lock, flags);
2183 if (!iwl_grab_nic_access(priv)) {
2184 iwl_write_prph(priv, APMG_CLK_DIS_REG,
2185 APMG_CLK_VAL_DMA_CLK_RQT);
2186 iwl_release_nic_access(priv);
2187 }
2188 spin_unlock_irqrestore(&priv->lock, flags);
2189
2190 udelay(5);
2191
2192 /* FIXME: apm_ops.suspend(priv) */
2193 priv->cfg->ops->lib->apm_ops.reset(priv);
2194 priv->cfg->ops->lib->free_shared_mem(priv);
2195
2196 exit:
2197 memset(&priv->card_alive, 0, sizeof(struct iwl_alive_resp));
2198
2199 if (priv->ibss_beacon)
2200 dev_kfree_skb(priv->ibss_beacon);
2201 priv->ibss_beacon = NULL;
2202
2203 /* clear out any free frames */
2204 iwl_clear_free_frames(priv);
2205 }
2206
2207 static void iwl4965_down(struct iwl_priv *priv)
2208 {
2209 mutex_lock(&priv->mutex);
2210 __iwl4965_down(priv);
2211 mutex_unlock(&priv->mutex);
2212
2213 iwl_cancel_deferred_work(priv);
2214 }
2215
2216 #define MAX_HW_RESTARTS 5
2217
2218 static int __iwl4965_up(struct iwl_priv *priv)
2219 {
2220 int i;
2221 int ret;
2222
2223 if (test_bit(STATUS_EXIT_PENDING, &priv->status)) {
2224 IWL_WARNING("Exit pending; will not bring the NIC up\n");
2225 return -EIO;
2226 }
2227
2228 if (!priv->ucode_data_backup.v_addr || !priv->ucode_data.v_addr) {
2229 IWL_ERROR("ucode not available for device bringup\n");
2230 return -EIO;
2231 }
2232
2233 /* If platform's RF_KILL switch is NOT set to KILL */
2234 if (iwl_read32(priv, CSR_GP_CNTRL) & CSR_GP_CNTRL_REG_FLAG_HW_RF_KILL_SW)
2235 clear_bit(STATUS_RF_KILL_HW, &priv->status);
2236 else
2237 set_bit(STATUS_RF_KILL_HW, &priv->status);
2238
2239 if (iwl_is_rfkill(priv)) {
2240 iwl4965_enable_interrupts(priv);
2241 IWL_WARNING("Radio disabled by %s RF Kill switch\n",
2242 test_bit(STATUS_RF_KILL_HW, &priv->status) ? "HW" : "SW");
2243 return 0;
2244 }
2245
2246 iwl_write32(priv, CSR_INT, 0xFFFFFFFF);
2247
2248 ret = priv->cfg->ops->lib->alloc_shared_mem(priv);
2249 if (ret) {
2250 IWL_ERROR("Unable to allocate shared memory\n");
2251 return ret;
2252 }
2253
2254 ret = iwl_hw_nic_init(priv);
2255 if (ret) {
2256 IWL_ERROR("Unable to init nic\n");
2257 return ret;
2258 }
2259
2260 /* make sure rfkill handshake bits are cleared */
2261 iwl_write32(priv, CSR_UCODE_DRV_GP1_CLR, CSR_UCODE_SW_BIT_RFKILL);
2262 iwl_write32(priv, CSR_UCODE_DRV_GP1_CLR,
2263 CSR_UCODE_DRV_GP1_BIT_CMD_BLOCKED);
2264
2265 /* clear (again), then enable host interrupts */
2266 iwl_write32(priv, CSR_INT, 0xFFFFFFFF);
2267 iwl4965_enable_interrupts(priv);
2268
2269 /* really make sure rfkill handshake bits are cleared */
2270 iwl_write32(priv, CSR_UCODE_DRV_GP1_CLR, CSR_UCODE_SW_BIT_RFKILL);
2271 iwl_write32(priv, CSR_UCODE_DRV_GP1_CLR, CSR_UCODE_SW_BIT_RFKILL);
2272
2273 /* Copy original ucode data image from disk into backup cache.
2274 * This will be used to initialize the on-board processor's
2275 * data SRAM for a clean start when the runtime program first loads. */
2276 memcpy(priv->ucode_data_backup.v_addr, priv->ucode_data.v_addr,
2277 priv->ucode_data.len);
2278
2279 for (i = 0; i < MAX_HW_RESTARTS; i++) {
2280
2281 iwl_clear_stations_table(priv);
2282
2283 /* load bootstrap state machine,
2284 * load bootstrap program into processor's memory,
2285 * prepare to load the "initialize" uCode */
2286 ret = priv->cfg->ops->lib->load_ucode(priv);
2287
2288 if (ret) {
2289 IWL_ERROR("Unable to set up bootstrap uCode: %d\n", ret);
2290 continue;
2291 }
2292
2293 /* Clear out the uCode error bit if it is set */
2294 clear_bit(STATUS_FW_ERROR, &priv->status);
2295
2296 /* start card; "initialize" will load runtime ucode */
2297 iwl4965_nic_start(priv);
2298
2299 IWL_DEBUG_INFO(DRV_NAME " is coming up\n");
2300
2301 return 0;
2302 }
2303
2304 set_bit(STATUS_EXIT_PENDING, &priv->status);
2305 __iwl4965_down(priv);
2306 clear_bit(STATUS_EXIT_PENDING, &priv->status);
2307
2308 /* tried to restart and config the device for as long as our
2309 * patience could withstand */
2310 IWL_ERROR("Unable to initialize device after %d attempts.\n", i);
2311 return -EIO;
2312 }
2313
2314
2315 /*****************************************************************************
2316 *
2317 * Workqueue callbacks
2318 *
2319 *****************************************************************************/
2320
2321 static void iwl_bg_init_alive_start(struct work_struct *data)
2322 {
2323 struct iwl_priv *priv =
2324 container_of(data, struct iwl_priv, init_alive_start.work);
2325
2326 if (test_bit(STATUS_EXIT_PENDING, &priv->status))
2327 return;
2328
2329 mutex_lock(&priv->mutex);
2330 priv->cfg->ops->lib->init_alive_start(priv);
2331 mutex_unlock(&priv->mutex);
2332 }
2333
2334 static void iwl_bg_alive_start(struct work_struct *data)
2335 {
2336 struct iwl_priv *priv =
2337 container_of(data, struct iwl_priv, alive_start.work);
2338
2339 if (test_bit(STATUS_EXIT_PENDING, &priv->status))
2340 return;
2341
2342 mutex_lock(&priv->mutex);
2343 iwl_alive_start(priv);
2344 mutex_unlock(&priv->mutex);
2345 }
2346
2347 static void iwl4965_bg_rf_kill(struct work_struct *work)
2348 {
2349 struct iwl_priv *priv = container_of(work, struct iwl_priv, rf_kill);
2350
2351 wake_up_interruptible(&priv->wait_command_queue);
2352
2353 if (test_bit(STATUS_EXIT_PENDING, &priv->status))
2354 return;
2355
2356 mutex_lock(&priv->mutex);
2357
2358 if (!iwl_is_rfkill(priv)) {
2359 IWL_DEBUG(IWL_DL_RF_KILL,
2360 "HW and/or SW RF Kill no longer active, restarting "
2361 "device\n");
2362 if (!test_bit(STATUS_EXIT_PENDING, &priv->status))
2363 queue_work(priv->workqueue, &priv->restart);
2364 } else {
2365 /* make sure mac80211 stop sending Tx frame */
2366 if (priv->mac80211_registered)
2367 ieee80211_stop_queues(priv->hw);
2368
2369 if (!test_bit(STATUS_RF_KILL_HW, &priv->status))
2370 IWL_DEBUG_RF_KILL("Can not turn radio back on - "
2371 "disabled by SW switch\n");
2372 else
2373 IWL_WARNING("Radio Frequency Kill Switch is On:\n"
2374 "Kill switch must be turned off for "
2375 "wireless networking to work.\n");
2376 }
2377 mutex_unlock(&priv->mutex);
2378 iwl_rfkill_set_hw_state(priv);
2379 }
2380
2381 static void iwl4965_bg_set_monitor(struct work_struct *work)
2382 {
2383 struct iwl_priv *priv = container_of(work,
2384 struct iwl_priv, set_monitor);
2385 int ret;
2386
2387 IWL_DEBUG(IWL_DL_STATE, "setting monitor mode\n");
2388
2389 mutex_lock(&priv->mutex);
2390
2391 ret = iwl4965_set_mode(priv, IEEE80211_IF_TYPE_MNTR);
2392
2393 if (ret) {
2394 if (ret == -EAGAIN)
2395 IWL_DEBUG(IWL_DL_STATE, "leave - not ready\n");
2396 else
2397 IWL_ERROR("iwl4965_set_mode() failed ret = %d\n", ret);
2398 }
2399
2400 mutex_unlock(&priv->mutex);
2401 }
2402
2403 static void iwl_bg_run_time_calib_work(struct work_struct *work)
2404 {
2405 struct iwl_priv *priv = container_of(work, struct iwl_priv,
2406 run_time_calib_work);
2407
2408 mutex_lock(&priv->mutex);
2409
2410 if (test_bit(STATUS_EXIT_PENDING, &priv->status) ||
2411 test_bit(STATUS_SCANNING, &priv->status)) {
2412 mutex_unlock(&priv->mutex);
2413 return;
2414 }
2415
2416 if (priv->start_calib) {
2417 iwl_chain_noise_calibration(priv, &priv->statistics);
2418
2419 iwl_sensitivity_calibration(priv, &priv->statistics);
2420 }
2421
2422 mutex_unlock(&priv->mutex);
2423 return;
2424 }
2425
2426 static void iwl4965_bg_up(struct work_struct *data)
2427 {
2428 struct iwl_priv *priv = container_of(data, struct iwl_priv, up);
2429
2430 if (test_bit(STATUS_EXIT_PENDING, &priv->status))
2431 return;
2432
2433 mutex_lock(&priv->mutex);
2434 __iwl4965_up(priv);
2435 mutex_unlock(&priv->mutex);
2436 iwl_rfkill_set_hw_state(priv);
2437 }
2438
2439 static void iwl4965_bg_restart(struct work_struct *data)
2440 {
2441 struct iwl_priv *priv = container_of(data, struct iwl_priv, restart);
2442
2443 if (test_bit(STATUS_EXIT_PENDING, &priv->status))
2444 return;
2445
2446 iwl4965_down(priv);
2447 queue_work(priv->workqueue, &priv->up);
2448 }
2449
2450 static void iwl4965_bg_rx_replenish(struct work_struct *data)
2451 {
2452 struct iwl_priv *priv =
2453 container_of(data, struct iwl_priv, rx_replenish);
2454
2455 if (test_bit(STATUS_EXIT_PENDING, &priv->status))
2456 return;
2457
2458 mutex_lock(&priv->mutex);
2459 iwl_rx_replenish(priv);
2460 mutex_unlock(&priv->mutex);
2461 }
2462
2463 #define IWL_DELAY_NEXT_SCAN (HZ*2)
2464
2465 static void iwl4965_post_associate(struct iwl_priv *priv)
2466 {
2467 struct ieee80211_conf *conf = NULL;
2468 int ret = 0;
2469 DECLARE_MAC_BUF(mac);
2470 unsigned long flags;
2471
2472 if (priv->iw_mode == IEEE80211_IF_TYPE_AP) {
2473 IWL_ERROR("%s Should not be called in AP mode\n", __func__);
2474 return;
2475 }
2476
2477 IWL_DEBUG_ASSOC("Associated as %d to: %s\n",
2478 priv->assoc_id,
2479 print_mac(mac, priv->active_rxon.bssid_addr));
2480
2481
2482 if (test_bit(STATUS_EXIT_PENDING, &priv->status))
2483 return;
2484
2485
2486 if (!priv->vif || !priv->is_open)
2487 return;
2488
2489 iwl_power_cancel_timeout(priv);
2490 iwl_scan_cancel_timeout(priv, 200);
2491
2492 conf = ieee80211_get_hw_conf(priv->hw);
2493
2494 priv->staging_rxon.filter_flags &= ~RXON_FILTER_ASSOC_MSK;
2495 iwl4965_commit_rxon(priv);
2496
2497 memset(&priv->rxon_timing, 0, sizeof(struct iwl4965_rxon_time_cmd));
2498 iwl4965_setup_rxon_timing(priv);
2499 ret = iwl_send_cmd_pdu(priv, REPLY_RXON_TIMING,
2500 sizeof(priv->rxon_timing), &priv->rxon_timing);
2501 if (ret)
2502 IWL_WARNING("REPLY_RXON_TIMING failed - "
2503 "Attempting to continue.\n");
2504
2505 priv->staging_rxon.filter_flags |= RXON_FILTER_ASSOC_MSK;
2506
2507 if (priv->current_ht_config.is_ht)
2508 iwl_set_rxon_ht(priv, &priv->current_ht_config);
2509
2510 iwl_set_rxon_chain(priv);
2511 priv->staging_rxon.assoc_id = cpu_to_le16(priv->assoc_id);
2512
2513 IWL_DEBUG_ASSOC("assoc id %d beacon interval %d\n",
2514 priv->assoc_id, priv->beacon_int);
2515
2516 if (priv->assoc_capability & WLAN_CAPABILITY_SHORT_PREAMBLE)
2517 priv->staging_rxon.flags |= RXON_FLG_SHORT_PREAMBLE_MSK;
2518 else
2519 priv->staging_rxon.flags &= ~RXON_FLG_SHORT_PREAMBLE_MSK;
2520
2521 if (priv->staging_rxon.flags & RXON_FLG_BAND_24G_MSK) {
2522 if (priv->assoc_capability & WLAN_CAPABILITY_SHORT_SLOT_TIME)
2523 priv->staging_rxon.flags |= RXON_FLG_SHORT_SLOT_MSK;
2524 else
2525 priv->staging_rxon.flags &= ~RXON_FLG_SHORT_SLOT_MSK;
2526
2527 if (priv->iw_mode == IEEE80211_IF_TYPE_IBSS)
2528 priv->staging_rxon.flags &= ~RXON_FLG_SHORT_SLOT_MSK;
2529
2530 }
2531
2532 iwl4965_commit_rxon(priv);
2533
2534 switch (priv->iw_mode) {
2535 case IEEE80211_IF_TYPE_STA:
2536 break;
2537
2538 case IEEE80211_IF_TYPE_IBSS:
2539
2540 /* assume default assoc id */
2541 priv->assoc_id = 1;
2542
2543 iwl_rxon_add_station(priv, priv->bssid, 0);
2544 iwl4965_send_beacon_cmd(priv);
2545
2546 break;
2547
2548 default:
2549 IWL_ERROR("%s Should not be called in %d mode\n",
2550 __func__, priv->iw_mode);
2551 break;
2552 }
2553
2554 if (priv->iw_mode == IEEE80211_IF_TYPE_IBSS)
2555 priv->assoc_station_added = 1;
2556
2557 spin_lock_irqsave(&priv->lock, flags);
2558 iwl_activate_qos(priv, 0);
2559 spin_unlock_irqrestore(&priv->lock, flags);
2560
2561 iwl_power_enable_management(priv);
2562
2563 /* Enable Rx differential gain and sensitivity calibrations */
2564 iwl_chain_noise_reset(priv);
2565 priv->start_calib = 1;
2566
2567 /* we have just associated, don't start scan too early */
2568 priv->next_scan_jiffies = jiffies + IWL_DELAY_NEXT_SCAN;
2569 }
2570
2571 static int iwl4965_mac_config(struct ieee80211_hw *hw, struct ieee80211_conf *conf);
2572
2573 static void iwl_bg_scan_completed(struct work_struct *work)
2574 {
2575 struct iwl_priv *priv =
2576 container_of(work, struct iwl_priv, scan_completed);
2577
2578 IWL_DEBUG_SCAN("SCAN complete scan\n");
2579
2580 if (test_bit(STATUS_EXIT_PENDING, &priv->status))
2581 return;
2582
2583 if (test_bit(STATUS_CONF_PENDING, &priv->status))
2584 iwl4965_mac_config(priv->hw, ieee80211_get_hw_conf(priv->hw));
2585
2586 ieee80211_scan_completed(priv->hw);
2587
2588 /* Since setting the TXPOWER may have been deferred while
2589 * performing the scan, fire one off */
2590 mutex_lock(&priv->mutex);
2591 iwl_set_tx_power(priv, priv->tx_power_user_lmt, true);
2592 mutex_unlock(&priv->mutex);
2593 }
2594
2595 /*****************************************************************************
2596 *
2597 * mac80211 entry point functions
2598 *
2599 *****************************************************************************/
2600
2601 #define UCODE_READY_TIMEOUT (4 * HZ)
2602
2603 static int iwl4965_mac_start(struct ieee80211_hw *hw)
2604 {
2605 struct iwl_priv *priv = hw->priv;
2606 int ret;
2607
2608 IWL_DEBUG_MAC80211("enter\n");
2609
2610 if (pci_enable_device(priv->pci_dev)) {
2611 IWL_ERROR("Fail to pci_enable_device\n");
2612 return -ENODEV;
2613 }
2614 pci_restore_state(priv->pci_dev);
2615 pci_enable_msi(priv->pci_dev);
2616
2617 ret = request_irq(priv->pci_dev->irq, iwl4965_isr, IRQF_SHARED,
2618 DRV_NAME, priv);
2619 if (ret) {
2620 IWL_ERROR("Error allocating IRQ %d\n", priv->pci_dev->irq);
2621 goto out_disable_msi;
2622 }
2623
2624 /* we should be verifying the device is ready to be opened */
2625 mutex_lock(&priv->mutex);
2626
2627 memset(&priv->staging_rxon, 0, sizeof(struct iwl_rxon_cmd));
2628 /* fetch ucode file from disk, alloc and copy to bus-master buffers ...
2629 * ucode filename and max sizes are card-specific. */
2630
2631 if (!priv->ucode_code.len) {
2632 ret = iwl4965_read_ucode(priv);
2633 if (ret) {
2634 IWL_ERROR("Could not read microcode: %d\n", ret);
2635 mutex_unlock(&priv->mutex);
2636 goto out_release_irq;
2637 }
2638 }
2639
2640 ret = __iwl4965_up(priv);
2641
2642 mutex_unlock(&priv->mutex);
2643
2644 iwl_rfkill_set_hw_state(priv);
2645
2646 if (ret)
2647 goto out_release_irq;
2648
2649 if (iwl_is_rfkill(priv))
2650 goto out;
2651
2652 IWL_DEBUG_INFO("Start UP work done.\n");
2653
2654 if (test_bit(STATUS_IN_SUSPEND, &priv->status))
2655 return 0;
2656
2657 /* Wait for START_ALIVE from Run Time ucode. Otherwise callbacks from
2658 * mac80211 will not be run successfully. */
2659 ret = wait_event_interruptible_timeout(priv->wait_command_queue,
2660 test_bit(STATUS_READY, &priv->status),
2661 UCODE_READY_TIMEOUT);
2662 if (!ret) {
2663 if (!test_bit(STATUS_READY, &priv->status)) {
2664 IWL_ERROR("START_ALIVE timeout after %dms.\n",
2665 jiffies_to_msecs(UCODE_READY_TIMEOUT));
2666 ret = -ETIMEDOUT;
2667 goto out_release_irq;
2668 }
2669 }
2670
2671 out:
2672 priv->is_open = 1;
2673 IWL_DEBUG_MAC80211("leave\n");
2674 return 0;
2675
2676 out_release_irq:
2677 free_irq(priv->pci_dev->irq, priv);
2678 out_disable_msi:
2679 pci_disable_msi(priv->pci_dev);
2680 pci_disable_device(priv->pci_dev);
2681 priv->is_open = 0;
2682 IWL_DEBUG_MAC80211("leave - failed\n");
2683 return ret;
2684 }
2685
2686 static void iwl4965_mac_stop(struct ieee80211_hw *hw)
2687 {
2688 struct iwl_priv *priv = hw->priv;
2689
2690 IWL_DEBUG_MAC80211("enter\n");
2691
2692 if (!priv->is_open) {
2693 IWL_DEBUG_MAC80211("leave - skip\n");
2694 return;
2695 }
2696
2697 priv->is_open = 0;
2698
2699 if (iwl_is_ready_rf(priv)) {
2700 /* stop mac, cancel any scan request and clear
2701 * RXON_FILTER_ASSOC_MSK BIT
2702 */
2703 mutex_lock(&priv->mutex);
2704 iwl_scan_cancel_timeout(priv, 100);
2705 mutex_unlock(&priv->mutex);
2706 }
2707
2708 iwl4965_down(priv);
2709
2710 flush_workqueue(priv->workqueue);
2711 free_irq(priv->pci_dev->irq, priv);
2712 pci_disable_msi(priv->pci_dev);
2713 pci_save_state(priv->pci_dev);
2714 pci_disable_device(priv->pci_dev);
2715
2716 IWL_DEBUG_MAC80211("leave\n");
2717 }
2718
2719 static int iwl4965_mac_tx(struct ieee80211_hw *hw, struct sk_buff *skb)
2720 {
2721 struct iwl_priv *priv = hw->priv;
2722
2723 IWL_DEBUG_MACDUMP("enter\n");
2724
2725 if (priv->iw_mode == IEEE80211_IF_TYPE_MNTR) {
2726 IWL_DEBUG_MAC80211("leave - monitor\n");
2727 dev_kfree_skb_any(skb);
2728 return 0;
2729 }
2730
2731 IWL_DEBUG_TX("dev->xmit(%d bytes) at rate 0x%02x\n", skb->len,
2732 ieee80211_get_tx_rate(hw, IEEE80211_SKB_CB(skb))->bitrate);
2733
2734 if (iwl_tx_skb(priv, skb))
2735 dev_kfree_skb_any(skb);
2736
2737 IWL_DEBUG_MACDUMP("leave\n");
2738 return 0;
2739 }
2740
2741 static int iwl4965_mac_add_interface(struct ieee80211_hw *hw,
2742 struct ieee80211_if_init_conf *conf)
2743 {
2744 struct iwl_priv *priv = hw->priv;
2745 unsigned long flags;
2746 DECLARE_MAC_BUF(mac);
2747
2748 IWL_DEBUG_MAC80211("enter: type %d\n", conf->type);
2749
2750 if (priv->vif) {
2751 IWL_DEBUG_MAC80211("leave - vif != NULL\n");
2752 return -EOPNOTSUPP;
2753 }
2754
2755 spin_lock_irqsave(&priv->lock, flags);
2756 priv->vif = conf->vif;
2757
2758 spin_unlock_irqrestore(&priv->lock, flags);
2759
2760 mutex_lock(&priv->mutex);
2761
2762 if (conf->mac_addr) {
2763 IWL_DEBUG_MAC80211("Set %s\n", print_mac(mac, conf->mac_addr));
2764 memcpy(priv->mac_addr, conf->mac_addr, ETH_ALEN);
2765 }
2766
2767 if (iwl4965_set_mode(priv, conf->type) == -EAGAIN)
2768 /* we are not ready, will run again when ready */
2769 set_bit(STATUS_MODE_PENDING, &priv->status);
2770
2771 mutex_unlock(&priv->mutex);
2772
2773 IWL_DEBUG_MAC80211("leave\n");
2774 return 0;
2775 }
2776
2777 /**
2778 * iwl4965_mac_config - mac80211 config callback
2779 *
2780 * We ignore conf->flags & IEEE80211_CONF_SHORT_SLOT_TIME since it seems to
2781 * be set inappropriately and the driver currently sets the hardware up to
2782 * use it whenever needed.
2783 */
2784 static int iwl4965_mac_config(struct ieee80211_hw *hw, struct ieee80211_conf *conf)
2785 {
2786 struct iwl_priv *priv = hw->priv;
2787 const struct iwl_channel_info *ch_info;
2788 unsigned long flags;
2789 int ret = 0;
2790 u16 channel;
2791
2792 mutex_lock(&priv->mutex);
2793 IWL_DEBUG_MAC80211("enter to channel %d\n", conf->channel->hw_value);
2794
2795 if (conf->radio_enabled && iwl_radio_kill_sw_enable_radio(priv)) {
2796 IWL_DEBUG_MAC80211("leave - RF-KILL - waiting for uCode\n");
2797 goto out;
2798 }
2799
2800 if (!conf->radio_enabled)
2801 iwl_radio_kill_sw_disable_radio(priv);
2802
2803 if (!iwl_is_ready(priv)) {
2804 IWL_DEBUG_MAC80211("leave - not ready\n");
2805 ret = -EIO;
2806 goto out;
2807 }
2808
2809 if (unlikely(!priv->cfg->mod_params->disable_hw_scan &&
2810 test_bit(STATUS_SCANNING, &priv->status))) {
2811 IWL_DEBUG_MAC80211("leave - scanning\n");
2812 set_bit(STATUS_CONF_PENDING, &priv->status);
2813 mutex_unlock(&priv->mutex);
2814 return 0;
2815 }
2816
2817 channel = ieee80211_frequency_to_channel(conf->channel->center_freq);
2818 ch_info = iwl_get_channel_info(priv, conf->channel->band, channel);
2819 if (!is_channel_valid(ch_info)) {
2820 IWL_DEBUG_MAC80211("leave - invalid channel\n");
2821 ret = -EINVAL;
2822 goto out;
2823 }
2824
2825 if (priv->iw_mode == IEEE80211_IF_TYPE_IBSS &&
2826 !is_channel_ibss(ch_info)) {
2827 IWL_ERROR("channel %d in band %d not IBSS channel\n",
2828 conf->channel->hw_value, conf->channel->band);
2829 ret = -EINVAL;
2830 goto out;
2831 }
2832
2833 spin_lock_irqsave(&priv->lock, flags);
2834
2835
2836 /* if we are switching from ht to 2.4 clear flags
2837 * from any ht related info since 2.4 does not
2838 * support ht */
2839 if ((le16_to_cpu(priv->staging_rxon.channel) != channel)
2840 #ifdef IEEE80211_CONF_CHANNEL_SWITCH
2841 && !(conf->flags & IEEE80211_CONF_CHANNEL_SWITCH)
2842 #endif
2843 )
2844 priv->staging_rxon.flags = 0;
2845
2846 iwl_set_rxon_channel(priv, conf->channel);
2847
2848 iwl_set_flags_for_band(priv, conf->channel->band);
2849
2850 /* The list of supported rates and rate mask can be different
2851 * for each band; since the band may have changed, reset
2852 * the rate mask to what mac80211 lists */
2853 iwl4965_set_rate(priv);
2854
2855 spin_unlock_irqrestore(&priv->lock, flags);
2856
2857 #ifdef IEEE80211_CONF_CHANNEL_SWITCH
2858 if (conf->flags & IEEE80211_CONF_CHANNEL_SWITCH) {
2859 iwl4965_hw_channel_switch(priv, conf->channel);
2860 goto out;
2861 }
2862 #endif
2863
2864 if (!conf->radio_enabled) {
2865 IWL_DEBUG_MAC80211("leave - radio disabled\n");
2866 goto out;
2867 }
2868
2869 if (iwl_is_rfkill(priv)) {
2870 IWL_DEBUG_MAC80211("leave - RF kill\n");
2871 ret = -EIO;
2872 goto out;
2873 }
2874
2875 IWL_DEBUG_MAC80211("TX Power old=%d new=%d\n",
2876 priv->tx_power_user_lmt, conf->power_level);
2877
2878 iwl_set_tx_power(priv, conf->power_level, false);
2879
2880 iwl4965_set_rate(priv);
2881
2882 if (memcmp(&priv->active_rxon,
2883 &priv->staging_rxon, sizeof(priv->staging_rxon)))
2884 iwl4965_commit_rxon(priv);
2885 else
2886 IWL_DEBUG_INFO("No re-sending same RXON configuration.\n");
2887
2888 IWL_DEBUG_MAC80211("leave\n");
2889
2890 out:
2891 clear_bit(STATUS_CONF_PENDING, &priv->status);
2892 mutex_unlock(&priv->mutex);
2893 return ret;
2894 }
2895
2896 static void iwl4965_config_ap(struct iwl_priv *priv)
2897 {
2898 int ret = 0;
2899 unsigned long flags;
2900
2901 if (test_bit(STATUS_EXIT_PENDING, &priv->status))
2902 return;
2903
2904 /* The following should be done only at AP bring up */
2905 if (!(iwl_is_associated(priv))) {
2906
2907 /* RXON - unassoc (to set timing command) */
2908 priv->staging_rxon.filter_flags &= ~RXON_FILTER_ASSOC_MSK;
2909 iwl4965_commit_rxon(priv);
2910
2911 /* RXON Timing */
2912 memset(&priv->rxon_timing, 0, sizeof(struct iwl4965_rxon_time_cmd));
2913 iwl4965_setup_rxon_timing(priv);
2914 ret = iwl_send_cmd_pdu(priv, REPLY_RXON_TIMING,
2915 sizeof(priv->rxon_timing), &priv->rxon_timing);
2916 if (ret)
2917 IWL_WARNING("REPLY_RXON_TIMING failed - "
2918 "Attempting to continue.\n");
2919
2920 iwl_set_rxon_chain(priv);
2921
2922 /* FIXME: what should be the assoc_id for AP? */
2923 priv->staging_rxon.assoc_id = cpu_to_le16(priv->assoc_id);
2924 if (priv->assoc_capability & WLAN_CAPABILITY_SHORT_PREAMBLE)
2925 priv->staging_rxon.flags |=
2926 RXON_FLG_SHORT_PREAMBLE_MSK;
2927 else
2928 priv->staging_rxon.flags &=
2929 ~RXON_FLG_SHORT_PREAMBLE_MSK;
2930
2931 if (priv->staging_rxon.flags & RXON_FLG_BAND_24G_MSK) {
2932 if (priv->assoc_capability &
2933 WLAN_CAPABILITY_SHORT_SLOT_TIME)
2934 priv->staging_rxon.flags |=
2935 RXON_FLG_SHORT_SLOT_MSK;
2936 else
2937 priv->staging_rxon.flags &=
2938 ~RXON_FLG_SHORT_SLOT_MSK;
2939
2940 if (priv->iw_mode == IEEE80211_IF_TYPE_IBSS)
2941 priv->staging_rxon.flags &=
2942 ~RXON_FLG_SHORT_SLOT_MSK;
2943 }
2944 /* restore RXON assoc */
2945 priv->staging_rxon.filter_flags |= RXON_FILTER_ASSOC_MSK;
2946 iwl4965_commit_rxon(priv);
2947 spin_lock_irqsave(&priv->lock, flags);
2948 iwl_activate_qos(priv, 1);
2949 spin_unlock_irqrestore(&priv->lock, flags);
2950 iwl_rxon_add_station(priv, iwl_bcast_addr, 0);
2951 }
2952 iwl4965_send_beacon_cmd(priv);
2953
2954 /* FIXME - we need to add code here to detect a totally new
2955 * configuration, reset the AP, unassoc, rxon timing, assoc,
2956 * clear sta table, add BCAST sta... */
2957 }
2958
2959 /* temporary */
2960 static int iwl4965_mac_beacon_update(struct ieee80211_hw *hw, struct sk_buff *skb);
2961
2962 static int iwl4965_mac_config_interface(struct ieee80211_hw *hw,
2963 struct ieee80211_vif *vif,
2964 struct ieee80211_if_conf *conf)
2965 {
2966 struct iwl_priv *priv = hw->priv;
2967 DECLARE_MAC_BUF(mac);
2968 unsigned long flags;
2969 int rc;
2970
2971 if (conf == NULL)
2972 return -EIO;
2973
2974 if (priv->vif != vif) {
2975 IWL_DEBUG_MAC80211("leave - priv->vif != vif\n");
2976 return 0;
2977 }
2978
2979 if (priv->iw_mode == IEEE80211_IF_TYPE_IBSS &&
2980 conf->changed & IEEE80211_IFCC_BEACON) {
2981 struct sk_buff *beacon = ieee80211_beacon_get(hw, vif);
2982 if (!beacon)
2983 return -ENOMEM;
2984 rc = iwl4965_mac_beacon_update(hw, beacon);
2985 if (rc)
2986 return rc;
2987 }
2988
2989 if ((priv->iw_mode == IEEE80211_IF_TYPE_AP) &&
2990 (!conf->ssid_len)) {
2991 IWL_DEBUG_MAC80211
2992 ("Leaving in AP mode because HostAPD is not ready.\n");
2993 return 0;
2994 }
2995
2996 if (!iwl_is_alive(priv))
2997 return -EAGAIN;
2998
2999 mutex_lock(&priv->mutex);
3000
3001 if (conf->bssid)
3002 IWL_DEBUG_MAC80211("bssid: %s\n",
3003 print_mac(mac, conf->bssid));
3004
3005 /*
3006 * very dubious code was here; the probe filtering flag is never set:
3007 *
3008 if (unlikely(test_bit(STATUS_SCANNING, &priv->status)) &&
3009 !(priv->hw->flags & IEEE80211_HW_NO_PROBE_FILTERING)) {
3010 */
3011
3012 if (priv->iw_mode == IEEE80211_IF_TYPE_AP) {
3013 if (!conf->bssid) {
3014 conf->bssid = priv->mac_addr;
3015 memcpy(priv->bssid, priv->mac_addr, ETH_ALEN);
3016 IWL_DEBUG_MAC80211("bssid was set to: %s\n",
3017 print_mac(mac, conf->bssid));
3018 }
3019 if (priv->ibss_beacon)
3020 dev_kfree_skb(priv->ibss_beacon);
3021
3022 priv->ibss_beacon = ieee80211_beacon_get(hw, vif);
3023 }
3024
3025 if (iwl_is_rfkill(priv))
3026 goto done;
3027
3028 if (conf->bssid && !is_zero_ether_addr(conf->bssid) &&
3029 !is_multicast_ether_addr(conf->bssid)) {
3030 /* If there is currently a HW scan going on in the background
3031 * then we need to cancel it else the RXON below will fail. */
3032 if (iwl_scan_cancel_timeout(priv, 100)) {
3033 IWL_WARNING("Aborted scan still in progress "
3034 "after 100ms\n");
3035 IWL_DEBUG_MAC80211("leaving - scan abort failed.\n");
3036 mutex_unlock(&priv->mutex);
3037 return -EAGAIN;
3038 }
3039 memcpy(priv->staging_rxon.bssid_addr, conf->bssid, ETH_ALEN);
3040
3041 /* TODO: Audit driver for usage of these members and see
3042 * if mac80211 deprecates them (priv->bssid looks like it
3043 * shouldn't be there, but I haven't scanned the IBSS code
3044 * to verify) - jpk */
3045 memcpy(priv->bssid, conf->bssid, ETH_ALEN);
3046
3047 if (priv->iw_mode == IEEE80211_IF_TYPE_AP)
3048 iwl4965_config_ap(priv);
3049 else {
3050 rc = iwl4965_commit_rxon(priv);
3051 if ((priv->iw_mode == IEEE80211_IF_TYPE_STA) && rc)
3052 iwl_rxon_add_station(
3053 priv, priv->active_rxon.bssid_addr, 1);
3054 }
3055
3056 } else {
3057 iwl_scan_cancel_timeout(priv, 100);
3058 priv->staging_rxon.filter_flags &= ~RXON_FILTER_ASSOC_MSK;
3059 iwl4965_commit_rxon(priv);
3060 }
3061
3062 done:
3063 spin_lock_irqsave(&priv->lock, flags);
3064 if (!conf->ssid_len)
3065 memset(priv->essid, 0, IW_ESSID_MAX_SIZE);
3066 else
3067 memcpy(priv->essid, conf->ssid, conf->ssid_len);
3068
3069 priv->essid_len = conf->ssid_len;
3070 spin_unlock_irqrestore(&priv->lock, flags);
3071
3072 IWL_DEBUG_MAC80211("leave\n");
3073 mutex_unlock(&priv->mutex);
3074
3075 return 0;
3076 }
3077
3078 static void iwl4965_configure_filter(struct ieee80211_hw *hw,
3079 unsigned int changed_flags,
3080 unsigned int *total_flags,
3081 int mc_count, struct dev_addr_list *mc_list)
3082 {
3083 struct iwl_priv *priv = hw->priv;
3084
3085 if (changed_flags & (*total_flags) & FIF_OTHER_BSS) {
3086 IWL_DEBUG_MAC80211("Enter: type %d (0x%x, 0x%x)\n",
3087 IEEE80211_IF_TYPE_MNTR,
3088 changed_flags, *total_flags);
3089 /* queue work 'cuz mac80211 is holding a lock which
3090 * prevents us from issuing (synchronous) f/w cmds */
3091 queue_work(priv->workqueue, &priv->set_monitor);
3092 }
3093 *total_flags &= FIF_OTHER_BSS | FIF_ALLMULTI |
3094 FIF_BCN_PRBRESP_PROMISC | FIF_CONTROL;
3095 }
3096
3097 static void iwl4965_mac_remove_interface(struct ieee80211_hw *hw,
3098 struct ieee80211_if_init_conf *conf)
3099 {
3100 struct iwl_priv *priv = hw->priv;
3101
3102 IWL_DEBUG_MAC80211("enter\n");
3103
3104 mutex_lock(&priv->mutex);
3105
3106 if (iwl_is_ready_rf(priv)) {
3107 iwl_scan_cancel_timeout(priv, 100);
3108 priv->staging_rxon.filter_flags &= ~RXON_FILTER_ASSOC_MSK;
3109 iwl4965_commit_rxon(priv);
3110 }
3111 if (priv->vif == conf->vif) {
3112 priv->vif = NULL;
3113 memset(priv->bssid, 0, ETH_ALEN);
3114 memset(priv->essid, 0, IW_ESSID_MAX_SIZE);
3115 priv->essid_len = 0;
3116 }
3117 mutex_unlock(&priv->mutex);
3118
3119 IWL_DEBUG_MAC80211("leave\n");
3120
3121 }
3122
3123 #define IWL_DELAY_NEXT_SCAN_AFTER_ASSOC (HZ*6)
3124 static void iwl4965_bss_info_changed(struct ieee80211_hw *hw,
3125 struct ieee80211_vif *vif,
3126 struct ieee80211_bss_conf *bss_conf,
3127 u32 changes)
3128 {
3129 struct iwl_priv *priv = hw->priv;
3130
3131 IWL_DEBUG_MAC80211("changes = 0x%X\n", changes);
3132
3133 if (changes & BSS_CHANGED_ERP_PREAMBLE) {
3134 IWL_DEBUG_MAC80211("ERP_PREAMBLE %d\n",
3135 bss_conf->use_short_preamble);
3136 if (bss_conf->use_short_preamble)
3137 priv->staging_rxon.flags |= RXON_FLG_SHORT_PREAMBLE_MSK;
3138 else
3139 priv->staging_rxon.flags &= ~RXON_FLG_SHORT_PREAMBLE_MSK;
3140 }
3141
3142 if (changes & BSS_CHANGED_ERP_CTS_PROT) {
3143 IWL_DEBUG_MAC80211("ERP_CTS %d\n", bss_conf->use_cts_prot);
3144 if (bss_conf->use_cts_prot && (priv->band != IEEE80211_BAND_5GHZ))
3145 priv->staging_rxon.flags |= RXON_FLG_TGG_PROTECT_MSK;
3146 else
3147 priv->staging_rxon.flags &= ~RXON_FLG_TGG_PROTECT_MSK;
3148 }
3149
3150 if (changes & BSS_CHANGED_HT) {
3151 IWL_DEBUG_MAC80211("HT %d\n", bss_conf->assoc_ht);
3152 iwl4965_ht_conf(priv, bss_conf);
3153 iwl_set_rxon_chain(priv);
3154 }
3155
3156 if (changes & BSS_CHANGED_ASSOC) {
3157 IWL_DEBUG_MAC80211("ASSOC %d\n", bss_conf->assoc);
3158 /* This should never happen as this function should
3159 * never be called from interrupt context. */
3160 if (WARN_ON_ONCE(in_interrupt()))
3161 return;
3162 if (bss_conf->assoc) {
3163 priv->assoc_id = bss_conf->aid;
3164 priv->beacon_int = bss_conf->beacon_int;
3165 priv->power_data.dtim_period = bss_conf->dtim_period;
3166 priv->timestamp = bss_conf->timestamp;
3167 priv->assoc_capability = bss_conf->assoc_capability;
3168 priv->next_scan_jiffies = jiffies +
3169 IWL_DELAY_NEXT_SCAN_AFTER_ASSOC;
3170 mutex_lock(&priv->mutex);
3171 iwl4965_post_associate(priv);
3172 mutex_unlock(&priv->mutex);
3173 } else {
3174 priv->assoc_id = 0;
3175 IWL_DEBUG_MAC80211("DISASSOC %d\n", bss_conf->assoc);
3176 }
3177 } else if (changes && iwl_is_associated(priv) && priv->assoc_id) {
3178 IWL_DEBUG_MAC80211("Associated Changes %d\n", changes);
3179 iwl_send_rxon_assoc(priv);
3180 }
3181
3182 }
3183
3184 static int iwl_mac_hw_scan(struct ieee80211_hw *hw, u8 *ssid, size_t ssid_len)
3185 {
3186 int ret;
3187 unsigned long flags;
3188 struct iwl_priv *priv = hw->priv;
3189
3190 IWL_DEBUG_MAC80211("enter\n");
3191
3192 mutex_lock(&priv->mutex);
3193 spin_lock_irqsave(&priv->lock, flags);
3194
3195 if (!iwl_is_ready_rf(priv)) {
3196 ret = -EIO;
3197 IWL_DEBUG_MAC80211("leave - not ready or exit pending\n");
3198 goto out_unlock;
3199 }
3200
3201 if (priv->iw_mode == IEEE80211_IF_TYPE_AP) { /* APs don't scan */
3202 ret = -EIO;
3203 IWL_ERROR("ERROR: APs don't scan\n");
3204 goto out_unlock;
3205 }
3206
3207 /* we don't schedule scan within next_scan_jiffies period */
3208 if (priv->next_scan_jiffies &&
3209 time_after(priv->next_scan_jiffies, jiffies)) {
3210 IWL_DEBUG_SCAN("scan rejected: within next scan period\n");
3211 ret = -EAGAIN;
3212 goto out_unlock;
3213 }
3214 /* if we just finished scan ask for delay */
3215 if (iwl_is_associated(priv) && priv->last_scan_jiffies &&
3216 time_after(priv->last_scan_jiffies + IWL_DELAY_NEXT_SCAN, jiffies)) {
3217 IWL_DEBUG_SCAN("scan rejected: within previous scan period\n");
3218 ret = -EAGAIN;
3219 goto out_unlock;
3220 }
3221 if (ssid_len) {
3222 priv->one_direct_scan = 1;
3223 priv->direct_ssid_len = min_t(u8, ssid_len, IW_ESSID_MAX_SIZE);
3224 memcpy(priv->direct_ssid, ssid, priv->direct_ssid_len);
3225 } else {
3226 priv->one_direct_scan = 0;
3227 }
3228
3229 ret = iwl_scan_initiate(priv);
3230
3231 IWL_DEBUG_MAC80211("leave\n");
3232
3233 out_unlock:
3234 spin_unlock_irqrestore(&priv->lock, flags);
3235 mutex_unlock(&priv->mutex);
3236
3237 return ret;
3238 }
3239
3240 static void iwl4965_mac_update_tkip_key(struct ieee80211_hw *hw,
3241 struct ieee80211_key_conf *keyconf, const u8 *addr,
3242 u32 iv32, u16 *phase1key)
3243 {
3244 struct iwl_priv *priv = hw->priv;
3245 u8 sta_id = IWL_INVALID_STATION;
3246 unsigned long flags;
3247 __le16 key_flags = 0;
3248 int i;
3249 DECLARE_MAC_BUF(mac);
3250
3251 IWL_DEBUG_MAC80211("enter\n");
3252
3253 sta_id = iwl_find_station(priv, addr);
3254 if (sta_id == IWL_INVALID_STATION) {
3255 IWL_DEBUG_MAC80211("leave - %s not in station map.\n",
3256 print_mac(mac, addr));
3257 return;
3258 }
3259
3260 iwl_scan_cancel_timeout(priv, 100);
3261
3262 key_flags |= (STA_KEY_FLG_TKIP | STA_KEY_FLG_MAP_KEY_MSK);
3263 key_flags |= cpu_to_le16(keyconf->keyidx << STA_KEY_FLG_KEYID_POS);
3264 key_flags &= ~STA_KEY_FLG_INVALID;
3265
3266 if (sta_id == priv->hw_params.bcast_sta_id)
3267 key_flags |= STA_KEY_MULTICAST_MSK;
3268
3269 spin_lock_irqsave(&priv->sta_lock, flags);
3270
3271 priv->stations[sta_id].sta.key.key_flags = key_flags;
3272 priv->stations[sta_id].sta.key.tkip_rx_tsc_byte2 = (u8) iv32;
3273
3274 for (i = 0; i < 5; i++)
3275 priv->stations[sta_id].sta.key.tkip_rx_ttak[i] =
3276 cpu_to_le16(phase1key[i]);
3277
3278 priv->stations[sta_id].sta.sta.modify_mask = STA_MODIFY_KEY_MASK;
3279 priv->stations[sta_id].sta.mode = STA_CONTROL_MODIFY_MSK;
3280
3281 iwl_send_add_sta(priv, &priv->stations[sta_id].sta, CMD_ASYNC);
3282
3283 spin_unlock_irqrestore(&priv->sta_lock, flags);
3284
3285 IWL_DEBUG_MAC80211("leave\n");
3286 }
3287
3288 static int iwl4965_mac_set_key(struct ieee80211_hw *hw, enum set_key_cmd cmd,
3289 const u8 *local_addr, const u8 *addr,
3290 struct ieee80211_key_conf *key)
3291 {
3292 struct iwl_priv *priv = hw->priv;
3293 DECLARE_MAC_BUF(mac);
3294 int ret = 0;
3295 u8 sta_id = IWL_INVALID_STATION;
3296 u8 is_default_wep_key = 0;
3297
3298 IWL_DEBUG_MAC80211("enter\n");
3299
3300 if (priv->hw_params.sw_crypto) {
3301 IWL_DEBUG_MAC80211("leave - hwcrypto disabled\n");
3302 return -EOPNOTSUPP;
3303 }
3304
3305 if (is_zero_ether_addr(addr))
3306 /* only support pairwise keys */
3307 return -EOPNOTSUPP;
3308
3309 sta_id = iwl_find_station(priv, addr);
3310 if (sta_id == IWL_INVALID_STATION) {
3311 IWL_DEBUG_MAC80211("leave - %s not in station map.\n",
3312 print_mac(mac, addr));
3313 return -EINVAL;
3314
3315 }
3316
3317 mutex_lock(&priv->mutex);
3318 iwl_scan_cancel_timeout(priv, 100);
3319 mutex_unlock(&priv->mutex);
3320
3321 /* If we are getting WEP group key and we didn't receive any key mapping
3322 * so far, we are in legacy wep mode (group key only), otherwise we are
3323 * in 1X mode.
3324 * In legacy wep mode, we use another host command to the uCode */
3325 if (key->alg == ALG_WEP && sta_id == priv->hw_params.bcast_sta_id &&
3326 priv->iw_mode != IEEE80211_IF_TYPE_AP) {
3327 if (cmd == SET_KEY)
3328 is_default_wep_key = !priv->key_mapping_key;
3329 else
3330 is_default_wep_key =
3331 (key->hw_key_idx == HW_KEY_DEFAULT);
3332 }
3333
3334 switch (cmd) {
3335 case SET_KEY:
3336 if (is_default_wep_key)
3337 ret = iwl_set_default_wep_key(priv, key);
3338 else
3339 ret = iwl_set_dynamic_key(priv, key, sta_id);
3340
3341 IWL_DEBUG_MAC80211("enable hwcrypto key\n");
3342 break;
3343 case DISABLE_KEY:
3344 if (is_default_wep_key)
3345 ret = iwl_remove_default_wep_key(priv, key);
3346 else
3347 ret = iwl_remove_dynamic_key(priv, key, sta_id);
3348
3349 IWL_DEBUG_MAC80211("disable hwcrypto key\n");
3350 break;
3351 default:
3352 ret = -EINVAL;
3353 }
3354
3355 IWL_DEBUG_MAC80211("leave\n");
3356
3357 return ret;
3358 }
3359
3360 static int iwl4965_mac_conf_tx(struct ieee80211_hw *hw, u16 queue,
3361 const struct ieee80211_tx_queue_params *params)
3362 {
3363 struct iwl_priv *priv = hw->priv;
3364 unsigned long flags;
3365 int q;
3366
3367 IWL_DEBUG_MAC80211("enter\n");
3368
3369 if (!iwl_is_ready_rf(priv)) {
3370 IWL_DEBUG_MAC80211("leave - RF not ready\n");
3371 return -EIO;
3372 }
3373
3374 if (queue >= AC_NUM) {
3375 IWL_DEBUG_MAC80211("leave - queue >= AC_NUM %d\n", queue);
3376 return 0;
3377 }
3378
3379 if (!priv->qos_data.qos_enable) {
3380 priv->qos_data.qos_active = 0;
3381 IWL_DEBUG_MAC80211("leave - qos not enabled\n");
3382 return 0;
3383 }
3384 q = AC_NUM - 1 - queue;
3385
3386 spin_lock_irqsave(&priv->lock, flags);
3387
3388 priv->qos_data.def_qos_parm.ac[q].cw_min = cpu_to_le16(params->cw_min);
3389 priv->qos_data.def_qos_parm.ac[q].cw_max = cpu_to_le16(params->cw_max);
3390 priv->qos_data.def_qos_parm.ac[q].aifsn = params->aifs;
3391 priv->qos_data.def_qos_parm.ac[q].edca_txop =
3392 cpu_to_le16((params->txop * 32));
3393
3394 priv->qos_data.def_qos_parm.ac[q].reserved1 = 0;
3395 priv->qos_data.qos_active = 1;
3396
3397 if (priv->iw_mode == IEEE80211_IF_TYPE_AP)
3398 iwl_activate_qos(priv, 1);
3399 else if (priv->assoc_id && iwl_is_associated(priv))
3400 iwl_activate_qos(priv, 0);
3401
3402 spin_unlock_irqrestore(&priv->lock, flags);
3403
3404 IWL_DEBUG_MAC80211("leave\n");
3405 return 0;
3406 }
3407
3408 static int iwl4965_mac_ampdu_action(struct ieee80211_hw *hw,
3409 enum ieee80211_ampdu_mlme_action action,
3410 const u8 *addr, u16 tid, u16 *ssn)
3411 {
3412 struct iwl_priv *priv = hw->priv;
3413 DECLARE_MAC_BUF(mac);
3414
3415 IWL_DEBUG_HT("A-MPDU action on addr %s tid %d\n",
3416 print_mac(mac, addr), tid);
3417
3418 if (!(priv->cfg->sku & IWL_SKU_N))
3419 return -EACCES;
3420
3421 switch (action) {
3422 case IEEE80211_AMPDU_RX_START:
3423 IWL_DEBUG_HT("start Rx\n");
3424 return iwl_rx_agg_start(priv, addr, tid, *ssn);
3425 case IEEE80211_AMPDU_RX_STOP:
3426 IWL_DEBUG_HT("stop Rx\n");
3427 return iwl_rx_agg_stop(priv, addr, tid);
3428 case IEEE80211_AMPDU_TX_START:
3429 IWL_DEBUG_HT("start Tx\n");
3430 return iwl_tx_agg_start(priv, addr, tid, ssn);
3431 case IEEE80211_AMPDU_TX_STOP:
3432 IWL_DEBUG_HT("stop Tx\n");
3433 return iwl_tx_agg_stop(priv, addr, tid);
3434 default:
3435 IWL_DEBUG_HT("unknown\n");
3436 return -EINVAL;
3437 break;
3438 }
3439 return 0;
3440 }
3441 static int iwl4965_mac_get_tx_stats(struct ieee80211_hw *hw,
3442 struct ieee80211_tx_queue_stats *stats)
3443 {
3444 struct iwl_priv *priv = hw->priv;
3445 int i, avail;
3446 struct iwl_tx_queue *txq;
3447 struct iwl_queue *q;
3448 unsigned long flags;
3449
3450 IWL_DEBUG_MAC80211("enter\n");
3451
3452 if (!iwl_is_ready_rf(priv)) {
3453 IWL_DEBUG_MAC80211("leave - RF not ready\n");
3454 return -EIO;
3455 }
3456
3457 spin_lock_irqsave(&priv->lock, flags);
3458
3459 for (i = 0; i < AC_NUM; i++) {
3460 txq = &priv->txq[i];
3461 q = &txq->q;
3462 avail = iwl_queue_space(q);
3463
3464 stats[i].len = q->n_window - avail;
3465 stats[i].limit = q->n_window - q->high_mark;
3466 stats[i].count = q->n_window;
3467
3468 }
3469 spin_unlock_irqrestore(&priv->lock, flags);
3470
3471 IWL_DEBUG_MAC80211("leave\n");
3472
3473 return 0;
3474 }
3475
3476 static int iwl4965_mac_get_stats(struct ieee80211_hw *hw,
3477 struct ieee80211_low_level_stats *stats)
3478 {
3479 struct iwl_priv *priv = hw->priv;
3480
3481 priv = hw->priv;
3482 IWL_DEBUG_MAC80211("enter\n");
3483 IWL_DEBUG_MAC80211("leave\n");
3484
3485 return 0;
3486 }
3487
3488 static void iwl4965_mac_reset_tsf(struct ieee80211_hw *hw)
3489 {
3490 struct iwl_priv *priv = hw->priv;
3491 unsigned long flags;
3492
3493 mutex_lock(&priv->mutex);
3494 IWL_DEBUG_MAC80211("enter\n");
3495
3496 spin_lock_irqsave(&priv->lock, flags);
3497 memset(&priv->current_ht_config, 0, sizeof(struct iwl_ht_info));
3498 spin_unlock_irqrestore(&priv->lock, flags);
3499
3500 iwl_reset_qos(priv);
3501
3502 spin_lock_irqsave(&priv->lock, flags);
3503 priv->assoc_id = 0;
3504 priv->assoc_capability = 0;
3505 priv->assoc_station_added = 0;
3506
3507 /* new association get rid of ibss beacon skb */
3508 if (priv->ibss_beacon)
3509 dev_kfree_skb(priv->ibss_beacon);
3510
3511 priv->ibss_beacon = NULL;
3512
3513 priv->beacon_int = priv->hw->conf.beacon_int;
3514 priv->timestamp = 0;
3515 if ((priv->iw_mode == IEEE80211_IF_TYPE_STA))
3516 priv->beacon_int = 0;
3517
3518 spin_unlock_irqrestore(&priv->lock, flags);
3519
3520 if (!iwl_is_ready_rf(priv)) {
3521 IWL_DEBUG_MAC80211("leave - not ready\n");
3522 mutex_unlock(&priv->mutex);
3523 return;
3524 }
3525
3526 /* we are restarting association process
3527 * clear RXON_FILTER_ASSOC_MSK bit
3528 */
3529 if (priv->iw_mode != IEEE80211_IF_TYPE_AP) {
3530 iwl_scan_cancel_timeout(priv, 100);
3531 priv->staging_rxon.filter_flags &= ~RXON_FILTER_ASSOC_MSK;
3532 iwl4965_commit_rxon(priv);
3533 }
3534
3535 iwl_power_update_mode(priv, 0);
3536
3537 /* Per mac80211.h: This is only used in IBSS mode... */
3538 if (priv->iw_mode != IEEE80211_IF_TYPE_IBSS) {
3539
3540 /* switch to CAM during association period.
3541 * the ucode will block any association/authentication
3542 * frome during assiciation period if it can not hear
3543 * the AP because of PM. the timer enable PM back is
3544 * association do not complete
3545 */
3546 if (priv->hw->conf.channel->flags & (IEEE80211_CHAN_PASSIVE_SCAN |
3547 IEEE80211_CHAN_RADAR))
3548 iwl_power_disable_management(priv, 3000);
3549
3550 IWL_DEBUG_MAC80211("leave - not in IBSS\n");
3551 mutex_unlock(&priv->mutex);
3552 return;
3553 }
3554
3555 iwl4965_set_rate(priv);
3556
3557 mutex_unlock(&priv->mutex);
3558
3559 IWL_DEBUG_MAC80211("leave\n");
3560 }
3561
3562 static int iwl4965_mac_beacon_update(struct ieee80211_hw *hw, struct sk_buff *skb)
3563 {
3564 struct iwl_priv *priv = hw->priv;
3565 unsigned long flags;
3566 __le64 timestamp;
3567
3568 mutex_lock(&priv->mutex);
3569 IWL_DEBUG_MAC80211("enter\n");
3570
3571 if (!iwl_is_ready_rf(priv)) {
3572 IWL_DEBUG_MAC80211("leave - RF not ready\n");
3573 mutex_unlock(&priv->mutex);
3574 return -EIO;
3575 }
3576
3577 if (priv->iw_mode != IEEE80211_IF_TYPE_IBSS) {
3578 IWL_DEBUG_MAC80211("leave - not IBSS\n");
3579 mutex_unlock(&priv->mutex);
3580 return -EIO;
3581 }
3582
3583 spin_lock_irqsave(&priv->lock, flags);
3584
3585 if (priv->ibss_beacon)
3586 dev_kfree_skb(priv->ibss_beacon);
3587
3588 priv->ibss_beacon = skb;
3589
3590 priv->assoc_id = 0;
3591 timestamp = ((struct ieee80211_mgmt *)skb->data)->u.beacon.timestamp;
3592 priv->timestamp = le64_to_cpu(timestamp) + (priv->beacon_int * 1000);
3593
3594 IWL_DEBUG_MAC80211("leave\n");
3595 spin_unlock_irqrestore(&priv->lock, flags);
3596
3597 iwl_reset_qos(priv);
3598
3599 iwl4965_post_associate(priv);
3600
3601 mutex_unlock(&priv->mutex);
3602
3603 return 0;
3604 }
3605
3606 /*****************************************************************************
3607 *
3608 * sysfs attributes
3609 *
3610 *****************************************************************************/
3611
3612 #ifdef CONFIG_IWLWIFI_DEBUG
3613
3614 /*
3615 * The following adds a new attribute to the sysfs representation
3616 * of this device driver (i.e. a new file in /sys/bus/pci/drivers/iwl/)
3617 * used for controlling the debug level.
3618 *
3619 * See the level definitions in iwl for details.
3620 */
3621
3622 static ssize_t show_debug_level(struct device *d,
3623 struct device_attribute *attr, char *buf)
3624 {
3625 struct iwl_priv *priv = d->driver_data;
3626
3627 return sprintf(buf, "0x%08X\n", priv->debug_level);
3628 }
3629 static ssize_t store_debug_level(struct device *d,
3630 struct device_attribute *attr,
3631 const char *buf, size_t count)
3632 {
3633 struct iwl_priv *priv = d->driver_data;
3634 unsigned long val;
3635 int ret;
3636
3637 ret = strict_strtoul(buf, 0, &val);
3638 if (ret)
3639 printk(KERN_INFO DRV_NAME
3640 ": %s is not in hex or decimal form.\n", buf);
3641 else
3642 priv->debug_level = val;
3643
3644 return strnlen(buf, count);
3645 }
3646
3647 static DEVICE_ATTR(debug_level, S_IWUSR | S_IRUGO,
3648 show_debug_level, store_debug_level);
3649
3650
3651 #endif /* CONFIG_IWLWIFI_DEBUG */
3652
3653
3654 static ssize_t show_version(struct device *d,
3655 struct device_attribute *attr, char *buf)
3656 {
3657 struct iwl_priv *priv = d->driver_data;
3658 struct iwl_alive_resp *palive = &priv->card_alive;
3659 ssize_t pos = 0;
3660 u16 eeprom_ver;
3661
3662 if (palive->is_valid)
3663 pos += sprintf(buf + pos,
3664 "fw version: 0x%01X.0x%01X.0x%01X.0x%01X\n"
3665 "fw type: 0x%01X 0x%01X\n",
3666 palive->ucode_major, palive->ucode_minor,
3667 palive->sw_rev[0], palive->sw_rev[1],
3668 palive->ver_type, palive->ver_subtype);
3669 else
3670 pos += sprintf(buf + pos, "fw not loaded\n");
3671
3672 if (priv->eeprom) {
3673 eeprom_ver = iwl_eeprom_query16(priv, EEPROM_VERSION);
3674 pos += sprintf(buf + pos, "EEPROM version: 0x%x\n",
3675 eeprom_ver);
3676 } else {
3677 pos += sprintf(buf + pos, "EEPROM not initialzed\n");
3678 }
3679
3680 return pos;
3681 }
3682
3683 static DEVICE_ATTR(version, S_IWUSR | S_IRUGO, show_version, NULL);
3684
3685 static ssize_t show_temperature(struct device *d,
3686 struct device_attribute *attr, char *buf)
3687 {
3688 struct iwl_priv *priv = (struct iwl_priv *)d->driver_data;
3689
3690 if (!iwl_is_alive(priv))
3691 return -EAGAIN;
3692
3693 return sprintf(buf, "%d\n", priv->temperature);
3694 }
3695
3696 static DEVICE_ATTR(temperature, S_IRUGO, show_temperature, NULL);
3697
3698 static ssize_t show_tx_power(struct device *d,
3699 struct device_attribute *attr, char *buf)
3700 {
3701 struct iwl_priv *priv = (struct iwl_priv *)d->driver_data;
3702 return sprintf(buf, "%d\n", priv->tx_power_user_lmt);
3703 }
3704
3705 static ssize_t store_tx_power(struct device *d,
3706 struct device_attribute *attr,
3707 const char *buf, size_t count)
3708 {
3709 struct iwl_priv *priv = (struct iwl_priv *)d->driver_data;
3710 unsigned long val;
3711 int ret;
3712
3713 ret = strict_strtoul(buf, 10, &val);
3714 if (ret)
3715 printk(KERN_INFO DRV_NAME
3716 ": %s is not in decimal form.\n", buf);
3717 else
3718 iwl_set_tx_power(priv, val, false);
3719
3720 return count;
3721 }
3722
3723 static DEVICE_ATTR(tx_power, S_IWUSR | S_IRUGO, show_tx_power, store_tx_power);
3724
3725 static ssize_t show_flags(struct device *d,
3726 struct device_attribute *attr, char *buf)
3727 {
3728 struct iwl_priv *priv = (struct iwl_priv *)d->driver_data;
3729
3730 return sprintf(buf, "0x%04X\n", priv->active_rxon.flags);
3731 }
3732
3733 static ssize_t store_flags(struct device *d,
3734 struct device_attribute *attr,
3735 const char *buf, size_t count)
3736 {
3737 struct iwl_priv *priv = (struct iwl_priv *)d->driver_data;
3738 unsigned long val;
3739 u32 flags;
3740 int ret = strict_strtoul(buf, 0, &val);
3741 if (ret)
3742 return ret;
3743 flags = (u32)val;
3744
3745 mutex_lock(&priv->mutex);
3746 if (le32_to_cpu(priv->staging_rxon.flags) != flags) {
3747 /* Cancel any currently running scans... */
3748 if (iwl_scan_cancel_timeout(priv, 100))
3749 IWL_WARNING("Could not cancel scan.\n");
3750 else {
3751 IWL_DEBUG_INFO("Commit rxon.flags = 0x%04X\n", flags);
3752 priv->staging_rxon.flags = cpu_to_le32(flags);
3753 iwl4965_commit_rxon(priv);
3754 }
3755 }
3756 mutex_unlock(&priv->mutex);
3757
3758 return count;
3759 }
3760
3761 static DEVICE_ATTR(flags, S_IWUSR | S_IRUGO, show_flags, store_flags);
3762
3763 static ssize_t show_filter_flags(struct device *d,
3764 struct device_attribute *attr, char *buf)
3765 {
3766 struct iwl_priv *priv = (struct iwl_priv *)d->driver_data;
3767
3768 return sprintf(buf, "0x%04X\n",
3769 le32_to_cpu(priv->active_rxon.filter_flags));
3770 }
3771
3772 static ssize_t store_filter_flags(struct device *d,
3773 struct device_attribute *attr,
3774 const char *buf, size_t count)
3775 {
3776 struct iwl_priv *priv = (struct iwl_priv *)d->driver_data;
3777 unsigned long val;
3778 u32 filter_flags;
3779 int ret = strict_strtoul(buf, 0, &val);
3780 if (ret)
3781 return ret;
3782 filter_flags = (u32)val;
3783
3784 mutex_lock(&priv->mutex);
3785 if (le32_to_cpu(priv->staging_rxon.filter_flags) != filter_flags) {
3786 /* Cancel any currently running scans... */
3787 if (iwl_scan_cancel_timeout(priv, 100))
3788 IWL_WARNING("Could not cancel scan.\n");
3789 else {
3790 IWL_DEBUG_INFO("Committing rxon.filter_flags = "
3791 "0x%04X\n", filter_flags);
3792 priv->staging_rxon.filter_flags =
3793 cpu_to_le32(filter_flags);
3794 iwl4965_commit_rxon(priv);
3795 }
3796 }
3797 mutex_unlock(&priv->mutex);
3798
3799 return count;
3800 }
3801
3802 static DEVICE_ATTR(filter_flags, S_IWUSR | S_IRUGO, show_filter_flags,
3803 store_filter_flags);
3804
3805 #ifdef CONFIG_IWLAGN_SPECTRUM_MEASUREMENT
3806
3807 static ssize_t show_measurement(struct device *d,
3808 struct device_attribute *attr, char *buf)
3809 {
3810 struct iwl_priv *priv = dev_get_drvdata(d);
3811 struct iwl4965_spectrum_notification measure_report;
3812 u32 size = sizeof(measure_report), len = 0, ofs = 0;
3813 u8 *data = (u8 *)&measure_report;
3814 unsigned long flags;
3815
3816 spin_lock_irqsave(&priv->lock, flags);
3817 if (!(priv->measurement_status & MEASUREMENT_READY)) {
3818 spin_unlock_irqrestore(&priv->lock, flags);
3819 return 0;
3820 }
3821 memcpy(&measure_report, &priv->measure_report, size);
3822 priv->measurement_status = 0;
3823 spin_unlock_irqrestore(&priv->lock, flags);
3824
3825 while (size && (PAGE_SIZE - len)) {
3826 hex_dump_to_buffer(data + ofs, size, 16, 1, buf + len,
3827 PAGE_SIZE - len, 1);
3828 len = strlen(buf);
3829 if (PAGE_SIZE - len)
3830 buf[len++] = '\n';
3831
3832 ofs += 16;
3833 size -= min(size, 16U);
3834 }
3835
3836 return len;
3837 }
3838
3839 static ssize_t store_measurement(struct device *d,
3840 struct device_attribute *attr,
3841 const char *buf, size_t count)
3842 {
3843 struct iwl_priv *priv = dev_get_drvdata(d);
3844 struct ieee80211_measurement_params params = {
3845 .channel = le16_to_cpu(priv->active_rxon.channel),
3846 .start_time = cpu_to_le64(priv->last_tsf),
3847 .duration = cpu_to_le16(1),
3848 };
3849 u8 type = IWL_MEASURE_BASIC;
3850 u8 buffer[32];
3851 u8 channel;
3852
3853 if (count) {
3854 char *p = buffer;
3855 strncpy(buffer, buf, min(sizeof(buffer), count));
3856 channel = simple_strtoul(p, NULL, 0);
3857 if (channel)
3858 params.channel = channel;
3859
3860 p = buffer;
3861 while (*p && *p != ' ')
3862 p++;
3863 if (*p)
3864 type = simple_strtoul(p + 1, NULL, 0);
3865 }
3866
3867 IWL_DEBUG_INFO("Invoking measurement of type %d on "
3868 "channel %d (for '%s')\n", type, params.channel, buf);
3869 iwl4965_get_measurement(priv, &params, type);
3870
3871 return count;
3872 }
3873
3874 static DEVICE_ATTR(measurement, S_IRUSR | S_IWUSR,
3875 show_measurement, store_measurement);
3876 #endif /* CONFIG_IWLAGN_SPECTRUM_MEASUREMENT */
3877
3878 static ssize_t store_retry_rate(struct device *d,
3879 struct device_attribute *attr,
3880 const char *buf, size_t count)
3881 {
3882 struct iwl_priv *priv = dev_get_drvdata(d);
3883 long val;
3884 int ret = strict_strtol(buf, 10, &val);
3885 if (!ret)
3886 return ret;
3887
3888 priv->retry_rate = (val > 0) ? val : 1;
3889
3890 return count;
3891 }
3892
3893 static ssize_t show_retry_rate(struct device *d,
3894 struct device_attribute *attr, char *buf)
3895 {
3896 struct iwl_priv *priv = dev_get_drvdata(d);
3897 return sprintf(buf, "%d", priv->retry_rate);
3898 }
3899
3900 static DEVICE_ATTR(retry_rate, S_IWUSR | S_IRUSR, show_retry_rate,
3901 store_retry_rate);
3902
3903 static ssize_t store_power_level(struct device *d,
3904 struct device_attribute *attr,
3905 const char *buf, size_t count)
3906 {
3907 struct iwl_priv *priv = dev_get_drvdata(d);
3908 int ret;
3909 unsigned long mode;
3910
3911
3912 mutex_lock(&priv->mutex);
3913
3914 if (!iwl_is_ready(priv)) {
3915 ret = -EAGAIN;
3916 goto out;
3917 }
3918
3919 ret = strict_strtoul(buf, 10, &mode);
3920 if (ret)
3921 goto out;
3922
3923 ret = iwl_power_set_user_mode(priv, mode);
3924 if (ret) {
3925 IWL_DEBUG_MAC80211("failed setting power mode.\n");
3926 goto out;
3927 }
3928 ret = count;
3929
3930 out:
3931 mutex_unlock(&priv->mutex);
3932 return ret;
3933 }
3934
3935 static ssize_t show_power_level(struct device *d,
3936 struct device_attribute *attr, char *buf)
3937 {
3938 struct iwl_priv *priv = dev_get_drvdata(d);
3939 int mode = priv->power_data.user_power_setting;
3940 int system = priv->power_data.system_power_setting;
3941 int level = priv->power_data.power_mode;
3942 char *p = buf;
3943
3944 switch (system) {
3945 case IWL_POWER_SYS_AUTO:
3946 p += sprintf(p, "SYSTEM:auto");
3947 break;
3948 case IWL_POWER_SYS_AC:
3949 p += sprintf(p, "SYSTEM:ac");
3950 break;
3951 case IWL_POWER_SYS_BATTERY:
3952 p += sprintf(p, "SYSTEM:battery");
3953 break;
3954 }
3955
3956 p += sprintf(p, "\tMODE:%s", (mode < IWL_POWER_AUTO)?"fixed":"auto");
3957 p += sprintf(p, "\tINDEX:%d", level);
3958 p += sprintf(p, "\n");
3959 return p - buf + 1;
3960 }
3961
3962 static DEVICE_ATTR(power_level, S_IWUSR | S_IRUSR, show_power_level,
3963 store_power_level);
3964
3965 static ssize_t show_channels(struct device *d,
3966 struct device_attribute *attr, char *buf)
3967 {
3968
3969 struct iwl_priv *priv = dev_get_drvdata(d);
3970 struct ieee80211_channel *channels = NULL;
3971 const struct ieee80211_supported_band *supp_band = NULL;
3972 int len = 0, i;
3973 int count = 0;
3974
3975 if (!test_bit(STATUS_GEO_CONFIGURED, &priv->status))
3976 return -EAGAIN;
3977
3978 supp_band = iwl_get_hw_mode(priv, IEEE80211_BAND_2GHZ);
3979 channels = supp_band->channels;
3980 count = supp_band->n_channels;
3981
3982 len += sprintf(&buf[len],
3983 "Displaying %d channels in 2.4GHz band "
3984 "(802.11bg):\n", count);
3985
3986 for (i = 0; i < count; i++)
3987 len += sprintf(&buf[len], "%d: %ddBm: BSS%s%s, %s.\n",
3988 ieee80211_frequency_to_channel(
3989 channels[i].center_freq),
3990 channels[i].max_power,
3991 channels[i].flags & IEEE80211_CHAN_RADAR ?
3992 " (IEEE 802.11h required)" : "",
3993 (!(channels[i].flags & IEEE80211_CHAN_NO_IBSS)
3994 || (channels[i].flags &
3995 IEEE80211_CHAN_RADAR)) ? "" :
3996 ", IBSS",
3997 channels[i].flags &
3998 IEEE80211_CHAN_PASSIVE_SCAN ?
3999 "passive only" : "active/passive");
4000
4001 supp_band = iwl_get_hw_mode(priv, IEEE80211_BAND_5GHZ);
4002 channels = supp_band->channels;
4003 count = supp_band->n_channels;
4004
4005 len += sprintf(&buf[len], "Displaying %d channels in 5.2GHz band "
4006 "(802.11a):\n", count);
4007
4008 for (i = 0; i < count; i++)
4009 len += sprintf(&buf[len], "%d: %ddBm: BSS%s%s, %s.\n",
4010 ieee80211_frequency_to_channel(
4011 channels[i].center_freq),
4012 channels[i].max_power,
4013 channels[i].flags & IEEE80211_CHAN_RADAR ?
4014 " (IEEE 802.11h required)" : "",
4015 ((channels[i].flags & IEEE80211_CHAN_NO_IBSS)
4016 || (channels[i].flags &
4017 IEEE80211_CHAN_RADAR)) ? "" :
4018 ", IBSS",
4019 channels[i].flags &
4020 IEEE80211_CHAN_PASSIVE_SCAN ?
4021 "passive only" : "active/passive");
4022
4023 return len;
4024 }
4025
4026 static DEVICE_ATTR(channels, S_IRUSR, show_channels, NULL);
4027
4028 static ssize_t show_statistics(struct device *d,
4029 struct device_attribute *attr, char *buf)
4030 {
4031 struct iwl_priv *priv = dev_get_drvdata(d);
4032 u32 size = sizeof(struct iwl_notif_statistics);
4033 u32 len = 0, ofs = 0;
4034 u8 *data = (u8 *)&priv->statistics;
4035 int rc = 0;
4036
4037 if (!iwl_is_alive(priv))
4038 return -EAGAIN;
4039
4040 mutex_lock(&priv->mutex);
4041 rc = iwl_send_statistics_request(priv, 0);
4042 mutex_unlock(&priv->mutex);
4043
4044 if (rc) {
4045 len = sprintf(buf,
4046 "Error sending statistics request: 0x%08X\n", rc);
4047 return len;
4048 }
4049
4050 while (size && (PAGE_SIZE - len)) {
4051 hex_dump_to_buffer(data + ofs, size, 16, 1, buf + len,
4052 PAGE_SIZE - len, 1);
4053 len = strlen(buf);
4054 if (PAGE_SIZE - len)
4055 buf[len++] = '\n';
4056
4057 ofs += 16;
4058 size -= min(size, 16U);
4059 }
4060
4061 return len;
4062 }
4063
4064 static DEVICE_ATTR(statistics, S_IRUGO, show_statistics, NULL);
4065
4066 static ssize_t show_status(struct device *d,
4067 struct device_attribute *attr, char *buf)
4068 {
4069 struct iwl_priv *priv = (struct iwl_priv *)d->driver_data;
4070 if (!iwl_is_alive(priv))
4071 return -EAGAIN;
4072 return sprintf(buf, "0x%08x\n", (int)priv->status);
4073 }
4074
4075 static DEVICE_ATTR(status, S_IRUGO, show_status, NULL);
4076
4077 /*****************************************************************************
4078 *
4079 * driver setup and teardown
4080 *
4081 *****************************************************************************/
4082
4083 static void iwl_setup_deferred_work(struct iwl_priv *priv)
4084 {
4085 priv->workqueue = create_workqueue(DRV_NAME);
4086
4087 init_waitqueue_head(&priv->wait_command_queue);
4088
4089 INIT_WORK(&priv->up, iwl4965_bg_up);
4090 INIT_WORK(&priv->restart, iwl4965_bg_restart);
4091 INIT_WORK(&priv->rx_replenish, iwl4965_bg_rx_replenish);
4092 INIT_WORK(&priv->rf_kill, iwl4965_bg_rf_kill);
4093 INIT_WORK(&priv->beacon_update, iwl4965_bg_beacon_update);
4094 INIT_WORK(&priv->set_monitor, iwl4965_bg_set_monitor);
4095 INIT_WORK(&priv->run_time_calib_work, iwl_bg_run_time_calib_work);
4096 INIT_DELAYED_WORK(&priv->init_alive_start, iwl_bg_init_alive_start);
4097 INIT_DELAYED_WORK(&priv->alive_start, iwl_bg_alive_start);
4098
4099 /* FIXME : remove when resolved PENDING */
4100 INIT_WORK(&priv->scan_completed, iwl_bg_scan_completed);
4101 iwl_setup_scan_deferred_work(priv);
4102 iwl_setup_power_deferred_work(priv);
4103
4104 if (priv->cfg->ops->lib->setup_deferred_work)
4105 priv->cfg->ops->lib->setup_deferred_work(priv);
4106
4107 init_timer(&priv->statistics_periodic);
4108 priv->statistics_periodic.data = (unsigned long)priv;
4109 priv->statistics_periodic.function = iwl4965_bg_statistics_periodic;
4110
4111 tasklet_init(&priv->irq_tasklet, (void (*)(unsigned long))
4112 iwl4965_irq_tasklet, (unsigned long)priv);
4113 }
4114
4115 static void iwl_cancel_deferred_work(struct iwl_priv *priv)
4116 {
4117 if (priv->cfg->ops->lib->cancel_deferred_work)
4118 priv->cfg->ops->lib->cancel_deferred_work(priv);
4119
4120 cancel_delayed_work_sync(&priv->init_alive_start);
4121 cancel_delayed_work(&priv->scan_check);
4122 cancel_delayed_work_sync(&priv->set_power_save);
4123 cancel_delayed_work(&priv->alive_start);
4124 cancel_work_sync(&priv->beacon_update);
4125 del_timer_sync(&priv->statistics_periodic);
4126 }
4127
4128 static struct attribute *iwl4965_sysfs_entries[] = {
4129 &dev_attr_channels.attr,
4130 &dev_attr_flags.attr,
4131 &dev_attr_filter_flags.attr,
4132 #ifdef CONFIG_IWLAGN_SPECTRUM_MEASUREMENT
4133 &dev_attr_measurement.attr,
4134 #endif
4135 &dev_attr_power_level.attr,
4136 &dev_attr_retry_rate.attr,
4137 &dev_attr_statistics.attr,
4138 &dev_attr_status.attr,
4139 &dev_attr_temperature.attr,
4140 &dev_attr_tx_power.attr,
4141 #ifdef CONFIG_IWLWIFI_DEBUG
4142 &dev_attr_debug_level.attr,
4143 #endif
4144 &dev_attr_version.attr,
4145
4146 NULL
4147 };
4148
4149 static struct attribute_group iwl4965_attribute_group = {
4150 .name = NULL, /* put in device directory */
4151 .attrs = iwl4965_sysfs_entries,
4152 };
4153
4154 static struct ieee80211_ops iwl4965_hw_ops = {
4155 .tx = iwl4965_mac_tx,
4156 .start = iwl4965_mac_start,
4157 .stop = iwl4965_mac_stop,
4158 .add_interface = iwl4965_mac_add_interface,
4159 .remove_interface = iwl4965_mac_remove_interface,
4160 .config = iwl4965_mac_config,
4161 .config_interface = iwl4965_mac_config_interface,
4162 .configure_filter = iwl4965_configure_filter,
4163 .set_key = iwl4965_mac_set_key,
4164 .update_tkip_key = iwl4965_mac_update_tkip_key,
4165 .get_stats = iwl4965_mac_get_stats,
4166 .get_tx_stats = iwl4965_mac_get_tx_stats,
4167 .conf_tx = iwl4965_mac_conf_tx,
4168 .reset_tsf = iwl4965_mac_reset_tsf,
4169 .bss_info_changed = iwl4965_bss_info_changed,
4170 .ampdu_action = iwl4965_mac_ampdu_action,
4171 .hw_scan = iwl_mac_hw_scan
4172 };
4173
4174 static int iwl4965_pci_probe(struct pci_dev *pdev, const struct pci_device_id *ent)
4175 {
4176 int err = 0;
4177 struct iwl_priv *priv;
4178 struct ieee80211_hw *hw;
4179 struct iwl_cfg *cfg = (struct iwl_cfg *)(ent->driver_data);
4180 unsigned long flags;
4181 DECLARE_MAC_BUF(mac);
4182
4183 /************************
4184 * 1. Allocating HW data
4185 ************************/
4186
4187 /* Disabling hardware scan means that mac80211 will perform scans
4188 * "the hard way", rather than using device's scan. */
4189 if (cfg->mod_params->disable_hw_scan) {
4190 if (cfg->mod_params->debug & IWL_DL_INFO)
4191 dev_printk(KERN_DEBUG, &(pdev->dev),
4192 "Disabling hw_scan\n");
4193 iwl4965_hw_ops.hw_scan = NULL;
4194 }
4195
4196 hw = iwl_alloc_all(cfg, &iwl4965_hw_ops);
4197 if (!hw) {
4198 err = -ENOMEM;
4199 goto out;
4200 }
4201 priv = hw->priv;
4202 /* At this point both hw and priv are allocated. */
4203
4204 SET_IEEE80211_DEV(hw, &pdev->dev);
4205
4206 IWL_DEBUG_INFO("*** LOAD DRIVER ***\n");
4207 priv->cfg = cfg;
4208 priv->pci_dev = pdev;
4209
4210 #ifdef CONFIG_IWLWIFI_DEBUG
4211 priv->debug_level = priv->cfg->mod_params->debug;
4212 atomic_set(&priv->restrict_refcnt, 0);
4213 #endif
4214
4215 /**************************
4216 * 2. Initializing PCI bus
4217 **************************/
4218 if (pci_enable_device(pdev)) {
4219 err = -ENODEV;
4220 goto out_ieee80211_free_hw;
4221 }
4222
4223 pci_set_master(pdev);
4224
4225 err = pci_set_dma_mask(pdev, DMA_64BIT_MASK);
4226 if (!err)
4227 err = pci_set_consistent_dma_mask(pdev, DMA_64BIT_MASK);
4228 if (err) {
4229 err = pci_set_dma_mask(pdev, DMA_32BIT_MASK);
4230 if (!err)
4231 err = pci_set_consistent_dma_mask(pdev, DMA_32BIT_MASK);
4232 /* both attempts failed: */
4233 if (err) {
4234 printk(KERN_WARNING "%s: No suitable DMA available.\n",
4235 DRV_NAME);
4236 goto out_pci_disable_device;
4237 }
4238 }
4239
4240 err = pci_request_regions(pdev, DRV_NAME);
4241 if (err)
4242 goto out_pci_disable_device;
4243
4244 pci_set_drvdata(pdev, priv);
4245
4246
4247 /***********************
4248 * 3. Read REV register
4249 ***********************/
4250 priv->hw_base = pci_iomap(pdev, 0, 0);
4251 if (!priv->hw_base) {
4252 err = -ENODEV;
4253 goto out_pci_release_regions;
4254 }
4255
4256 IWL_DEBUG_INFO("pci_resource_len = 0x%08llx\n",
4257 (unsigned long long) pci_resource_len(pdev, 0));
4258 IWL_DEBUG_INFO("pci_resource_base = %p\n", priv->hw_base);
4259
4260 iwl_hw_detect(priv);
4261 printk(KERN_INFO DRV_NAME
4262 ": Detected Intel Wireless WiFi Link %s REV=0x%X\n",
4263 priv->cfg->name, priv->hw_rev);
4264
4265 /* We disable the RETRY_TIMEOUT register (0x41) to keep
4266 * PCI Tx retries from interfering with C3 CPU state */
4267 pci_write_config_byte(pdev, PCI_CFG_RETRY_TIMEOUT, 0x00);
4268
4269 /* amp init */
4270 err = priv->cfg->ops->lib->apm_ops.init(priv);
4271 if (err < 0) {
4272 IWL_DEBUG_INFO("Failed to init APMG\n");
4273 goto out_iounmap;
4274 }
4275 /*****************
4276 * 4. Read EEPROM
4277 *****************/
4278 /* Read the EEPROM */
4279 err = iwl_eeprom_init(priv);
4280 if (err) {
4281 IWL_ERROR("Unable to init EEPROM\n");
4282 goto out_iounmap;
4283 }
4284 err = iwl_eeprom_check_version(priv);
4285 if (err)
4286 goto out_iounmap;
4287
4288 /* extract MAC Address */
4289 iwl_eeprom_get_mac(priv, priv->mac_addr);
4290 IWL_DEBUG_INFO("MAC address: %s\n", print_mac(mac, priv->mac_addr));
4291 SET_IEEE80211_PERM_ADDR(priv->hw, priv->mac_addr);
4292
4293 /************************
4294 * 5. Setup HW constants
4295 ************************/
4296 if (iwl_set_hw_params(priv)) {
4297 IWL_ERROR("failed to set hw parameters\n");
4298 goto out_free_eeprom;
4299 }
4300
4301 /*******************
4302 * 6. Setup priv
4303 *******************/
4304
4305 err = iwl_init_drv(priv);
4306 if (err)
4307 goto out_free_eeprom;
4308 /* At this point both hw and priv are initialized. */
4309
4310 /**********************************
4311 * 7. Initialize module parameters
4312 **********************************/
4313
4314 /* Disable radio (SW RF KILL) via parameter when loading driver */
4315 if (priv->cfg->mod_params->disable) {
4316 set_bit(STATUS_RF_KILL_SW, &priv->status);
4317 IWL_DEBUG_INFO("Radio disabled.\n");
4318 }
4319
4320 /********************
4321 * 8. Setup services
4322 ********************/
4323 spin_lock_irqsave(&priv->lock, flags);
4324 iwl4965_disable_interrupts(priv);
4325 spin_unlock_irqrestore(&priv->lock, flags);
4326
4327 err = sysfs_create_group(&pdev->dev.kobj, &iwl4965_attribute_group);
4328 if (err) {
4329 IWL_ERROR("failed to create sysfs device attributes\n");
4330 goto out_uninit_drv;
4331 }
4332
4333
4334 iwl_setup_deferred_work(priv);
4335 iwl_setup_rx_handlers(priv);
4336
4337 /********************
4338 * 9. Conclude
4339 ********************/
4340 pci_save_state(pdev);
4341 pci_disable_device(pdev);
4342
4343 /**********************************
4344 * 10. Setup and register mac80211
4345 **********************************/
4346
4347 err = iwl_setup_mac(priv);
4348 if (err)
4349 goto out_remove_sysfs;
4350
4351 err = iwl_dbgfs_register(priv, DRV_NAME);
4352 if (err)
4353 IWL_ERROR("failed to create debugfs files\n");
4354
4355 err = iwl_rfkill_init(priv);
4356 if (err)
4357 IWL_ERROR("Unable to initialize RFKILL system. "
4358 "Ignoring error: %d\n", err);
4359 iwl_power_initialize(priv);
4360 return 0;
4361
4362 out_remove_sysfs:
4363 sysfs_remove_group(&pdev->dev.kobj, &iwl4965_attribute_group);
4364 out_uninit_drv:
4365 iwl_uninit_drv(priv);
4366 out_free_eeprom:
4367 iwl_eeprom_free(priv);
4368 out_iounmap:
4369 pci_iounmap(pdev, priv->hw_base);
4370 out_pci_release_regions:
4371 pci_release_regions(pdev);
4372 pci_set_drvdata(pdev, NULL);
4373 out_pci_disable_device:
4374 pci_disable_device(pdev);
4375 out_ieee80211_free_hw:
4376 ieee80211_free_hw(priv->hw);
4377 out:
4378 return err;
4379 }
4380
4381 static void __devexit iwl4965_pci_remove(struct pci_dev *pdev)
4382 {
4383 struct iwl_priv *priv = pci_get_drvdata(pdev);
4384 unsigned long flags;
4385
4386 if (!priv)
4387 return;
4388
4389 IWL_DEBUG_INFO("*** UNLOAD DRIVER ***\n");
4390
4391 iwl_dbgfs_unregister(priv);
4392 sysfs_remove_group(&pdev->dev.kobj, &iwl4965_attribute_group);
4393
4394 if (priv->mac80211_registered) {
4395 ieee80211_unregister_hw(priv->hw);
4396 priv->mac80211_registered = 0;
4397 }
4398
4399 set_bit(STATUS_EXIT_PENDING, &priv->status);
4400
4401 iwl4965_down(priv);
4402
4403 /* make sure we flush any pending irq or
4404 * tasklet for the driver
4405 */
4406 spin_lock_irqsave(&priv->lock, flags);
4407 iwl4965_disable_interrupts(priv);
4408 spin_unlock_irqrestore(&priv->lock, flags);
4409
4410 iwl_synchronize_irq(priv);
4411
4412 iwl_rfkill_unregister(priv);
4413 iwl4965_dealloc_ucode_pci(priv);
4414
4415 if (priv->rxq.bd)
4416 iwl_rx_queue_free(priv, &priv->rxq);
4417 iwl_hw_txq_ctx_free(priv);
4418
4419 iwl_clear_stations_table(priv);
4420 iwl_eeprom_free(priv);
4421
4422
4423 /*netif_stop_queue(dev); */
4424 flush_workqueue(priv->workqueue);
4425
4426 /* ieee80211_unregister_hw calls iwl4965_mac_stop, which flushes
4427 * priv->workqueue... so we can't take down the workqueue
4428 * until now... */
4429 destroy_workqueue(priv->workqueue);
4430 priv->workqueue = NULL;
4431
4432 pci_iounmap(pdev, priv->hw_base);
4433 pci_release_regions(pdev);
4434 pci_disable_device(pdev);
4435 pci_set_drvdata(pdev, NULL);
4436
4437 iwl_uninit_drv(priv);
4438
4439 if (priv->ibss_beacon)
4440 dev_kfree_skb(priv->ibss_beacon);
4441
4442 ieee80211_free_hw(priv->hw);
4443 }
4444
4445 #ifdef CONFIG_PM
4446
4447 static int iwl4965_pci_suspend(struct pci_dev *pdev, pm_message_t state)
4448 {
4449 struct iwl_priv *priv = pci_get_drvdata(pdev);
4450
4451 if (priv->is_open) {
4452 set_bit(STATUS_IN_SUSPEND, &priv->status);
4453 iwl4965_mac_stop(priv->hw);
4454 priv->is_open = 1;
4455 }
4456
4457 pci_set_power_state(pdev, PCI_D3hot);
4458
4459 return 0;
4460 }
4461
4462 static int iwl4965_pci_resume(struct pci_dev *pdev)
4463 {
4464 struct iwl_priv *priv = pci_get_drvdata(pdev);
4465
4466 pci_set_power_state(pdev, PCI_D0);
4467
4468 if (priv->is_open)
4469 iwl4965_mac_start(priv->hw);
4470
4471 clear_bit(STATUS_IN_SUSPEND, &priv->status);
4472 return 0;
4473 }
4474
4475 #endif /* CONFIG_PM */
4476
4477 /*****************************************************************************
4478 *
4479 * driver and module entry point
4480 *
4481 *****************************************************************************/
4482
4483 /* Hardware specific file defines the PCI IDs table for that hardware module */
4484 static struct pci_device_id iwl_hw_card_ids[] = {
4485 #ifdef CONFIG_IWL4965
4486 {IWL_PCI_DEVICE(0x4229, PCI_ANY_ID, iwl4965_agn_cfg)},
4487 {IWL_PCI_DEVICE(0x4230, PCI_ANY_ID, iwl4965_agn_cfg)},
4488 #endif /* CONFIG_IWL4965 */
4489 #ifdef CONFIG_IWL5000
4490 {IWL_PCI_DEVICE(0x4232, 0x1205, iwl5100_bg_cfg)},
4491 {IWL_PCI_DEVICE(0x4232, 0x1305, iwl5100_bg_cfg)},
4492 {IWL_PCI_DEVICE(0x4232, 0x1206, iwl5100_abg_cfg)},
4493 {IWL_PCI_DEVICE(0x4232, 0x1306, iwl5100_abg_cfg)},
4494 {IWL_PCI_DEVICE(0x4232, 0x1326, iwl5100_abg_cfg)},
4495 {IWL_PCI_DEVICE(0x4237, 0x1216, iwl5100_abg_cfg)},
4496 {IWL_PCI_DEVICE(0x4232, PCI_ANY_ID, iwl5100_agn_cfg)},
4497 {IWL_PCI_DEVICE(0x4235, PCI_ANY_ID, iwl5300_agn_cfg)},
4498 {IWL_PCI_DEVICE(0x4236, PCI_ANY_ID, iwl5300_agn_cfg)},
4499 {IWL_PCI_DEVICE(0x4237, PCI_ANY_ID, iwl5100_agn_cfg)},
4500 {IWL_PCI_DEVICE(0x423A, PCI_ANY_ID, iwl5350_agn_cfg)},
4501 #endif /* CONFIG_IWL5000 */
4502 {0}
4503 };
4504 MODULE_DEVICE_TABLE(pci, iwl_hw_card_ids);
4505
4506 static struct pci_driver iwl_driver = {
4507 .name = DRV_NAME,
4508 .id_table = iwl_hw_card_ids,
4509 .probe = iwl4965_pci_probe,
4510 .remove = __devexit_p(iwl4965_pci_remove),
4511 #ifdef CONFIG_PM
4512 .suspend = iwl4965_pci_suspend,
4513 .resume = iwl4965_pci_resume,
4514 #endif
4515 };
4516
4517 static int __init iwl4965_init(void)
4518 {
4519
4520 int ret;
4521 printk(KERN_INFO DRV_NAME ": " DRV_DESCRIPTION ", " DRV_VERSION "\n");
4522 printk(KERN_INFO DRV_NAME ": " DRV_COPYRIGHT "\n");
4523
4524 ret = iwlagn_rate_control_register();
4525 if (ret) {
4526 IWL_ERROR("Unable to register rate control algorithm: %d\n", ret);
4527 return ret;
4528 }
4529
4530 ret = pci_register_driver(&iwl_driver);
4531 if (ret) {
4532 IWL_ERROR("Unable to initialize PCI module\n");
4533 goto error_register;
4534 }
4535
4536 return ret;
4537
4538 error_register:
4539 iwlagn_rate_control_unregister();
4540 return ret;
4541 }
4542
4543 static void __exit iwl4965_exit(void)
4544 {
4545 pci_unregister_driver(&iwl_driver);
4546 iwlagn_rate_control_unregister();
4547 }
4548
4549 module_exit(iwl4965_exit);
4550 module_init(iwl4965_init);
Linux with added FPC-III support