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iwlwifi: cleanup PCI register handling
[linux-2.6/libata-dev.git] / drivers / net / wireless / iwlwifi / iwl-agn.c
blob250473138f30f7194c7f698dc418caa99909aa76
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_scan_cancel_timeout(priv, 200);
2490
2491 conf = ieee80211_get_hw_conf(priv->hw);
2492
2493 priv->staging_rxon.filter_flags &= ~RXON_FILTER_ASSOC_MSK;
2494 iwl4965_commit_rxon(priv);
2495
2496 memset(&priv->rxon_timing, 0, sizeof(struct iwl4965_rxon_time_cmd));
2497 iwl4965_setup_rxon_timing(priv);
2498 ret = iwl_send_cmd_pdu(priv, REPLY_RXON_TIMING,
2499 sizeof(priv->rxon_timing), &priv->rxon_timing);
2500 if (ret)
2501 IWL_WARNING("REPLY_RXON_TIMING failed - "
2502 "Attempting to continue.\n");
2503
2504 priv->staging_rxon.filter_flags |= RXON_FILTER_ASSOC_MSK;
2505
2506 if (priv->current_ht_config.is_ht)
2507 iwl_set_rxon_ht(priv, &priv->current_ht_config);
2508
2509 iwl_set_rxon_chain(priv);
2510 priv->staging_rxon.assoc_id = cpu_to_le16(priv->assoc_id);
2511
2512 IWL_DEBUG_ASSOC("assoc id %d beacon interval %d\n",
2513 priv->assoc_id, priv->beacon_int);
2514
2515 if (priv->assoc_capability & WLAN_CAPABILITY_SHORT_PREAMBLE)
2516 priv->staging_rxon.flags |= RXON_FLG_SHORT_PREAMBLE_MSK;
2517 else
2518 priv->staging_rxon.flags &= ~RXON_FLG_SHORT_PREAMBLE_MSK;
2519
2520 if (priv->staging_rxon.flags & RXON_FLG_BAND_24G_MSK) {
2521 if (priv->assoc_capability & WLAN_CAPABILITY_SHORT_SLOT_TIME)
2522 priv->staging_rxon.flags |= RXON_FLG_SHORT_SLOT_MSK;
2523 else
2524 priv->staging_rxon.flags &= ~RXON_FLG_SHORT_SLOT_MSK;
2525
2526 if (priv->iw_mode == IEEE80211_IF_TYPE_IBSS)
2527 priv->staging_rxon.flags &= ~RXON_FLG_SHORT_SLOT_MSK;
2528
2529 }
2530
2531 iwl4965_commit_rxon(priv);
2532
2533 switch (priv->iw_mode) {
2534 case IEEE80211_IF_TYPE_STA:
2535 break;
2536
2537 case IEEE80211_IF_TYPE_IBSS:
2538
2539 /* assume default assoc id */
2540 priv->assoc_id = 1;
2541
2542 iwl_rxon_add_station(priv, priv->bssid, 0);
2543 iwl4965_send_beacon_cmd(priv);
2544
2545 break;
2546
2547 default:
2548 IWL_ERROR("%s Should not be called in %d mode\n",
2549 __func__, priv->iw_mode);
2550 break;
2551 }
2552
2553 /* Enable Rx differential gain and sensitivity calibrations */
2554 iwl_chain_noise_reset(priv);
2555 priv->start_calib = 1;
2556
2557 if (priv->iw_mode == IEEE80211_IF_TYPE_IBSS)
2558 priv->assoc_station_added = 1;
2559
2560 spin_lock_irqsave(&priv->lock, flags);
2561 iwl_activate_qos(priv, 0);
2562 spin_unlock_irqrestore(&priv->lock, flags);
2563
2564 iwl_power_update_mode(priv, 0);
2565 /* we have just associated, don't start scan too early */
2566 priv->next_scan_jiffies = jiffies + IWL_DELAY_NEXT_SCAN;
2567 }
2568
2569 static int iwl4965_mac_config(struct ieee80211_hw *hw, struct ieee80211_conf *conf);
2570
2571 static void iwl_bg_scan_completed(struct work_struct *work)
2572 {
2573 struct iwl_priv *priv =
2574 container_of(work, struct iwl_priv, scan_completed);
2575
2576 IWL_DEBUG_SCAN("SCAN complete scan\n");
2577
2578 if (test_bit(STATUS_EXIT_PENDING, &priv->status))
2579 return;
2580
2581 if (test_bit(STATUS_CONF_PENDING, &priv->status))
2582 iwl4965_mac_config(priv->hw, ieee80211_get_hw_conf(priv->hw));
2583
2584 ieee80211_scan_completed(priv->hw);
2585
2586 /* Since setting the TXPOWER may have been deferred while
2587 * performing the scan, fire one off */
2588 mutex_lock(&priv->mutex);
2589 iwl_set_tx_power(priv, priv->tx_power_user_lmt, true);
2590 mutex_unlock(&priv->mutex);
2591 }
2592
2593 /*****************************************************************************
2594 *
2595 * mac80211 entry point functions
2596 *
2597 *****************************************************************************/
2598
2599 #define UCODE_READY_TIMEOUT (4 * HZ)
2600
2601 static int iwl4965_mac_start(struct ieee80211_hw *hw)
2602 {
2603 struct iwl_priv *priv = hw->priv;
2604 int ret;
2605
2606 IWL_DEBUG_MAC80211("enter\n");
2607
2608 if (pci_enable_device(priv->pci_dev)) {
2609 IWL_ERROR("Fail to pci_enable_device\n");
2610 return -ENODEV;
2611 }
2612 pci_restore_state(priv->pci_dev);
2613 pci_enable_msi(priv->pci_dev);
2614
2615 ret = request_irq(priv->pci_dev->irq, iwl4965_isr, IRQF_SHARED,
2616 DRV_NAME, priv);
2617 if (ret) {
2618 IWL_ERROR("Error allocating IRQ %d\n", priv->pci_dev->irq);
2619 goto out_disable_msi;
2620 }
2621
2622 /* we should be verifying the device is ready to be opened */
2623 mutex_lock(&priv->mutex);
2624
2625 memset(&priv->staging_rxon, 0, sizeof(struct iwl_rxon_cmd));
2626 /* fetch ucode file from disk, alloc and copy to bus-master buffers ...
2627 * ucode filename and max sizes are card-specific. */
2628
2629 if (!priv->ucode_code.len) {
2630 ret = iwl4965_read_ucode(priv);
2631 if (ret) {
2632 IWL_ERROR("Could not read microcode: %d\n", ret);
2633 mutex_unlock(&priv->mutex);
2634 goto out_release_irq;
2635 }
2636 }
2637
2638 ret = __iwl4965_up(priv);
2639
2640 mutex_unlock(&priv->mutex);
2641
2642 iwl_rfkill_set_hw_state(priv);
2643
2644 if (ret)
2645 goto out_release_irq;
2646
2647 if (iwl_is_rfkill(priv))
2648 goto out;
2649
2650 IWL_DEBUG_INFO("Start UP work done.\n");
2651
2652 if (test_bit(STATUS_IN_SUSPEND, &priv->status))
2653 return 0;
2654
2655 /* Wait for START_ALIVE from Run Time ucode. Otherwise callbacks from
2656 * mac80211 will not be run successfully. */
2657 ret = wait_event_interruptible_timeout(priv->wait_command_queue,
2658 test_bit(STATUS_READY, &priv->status),
2659 UCODE_READY_TIMEOUT);
2660 if (!ret) {
2661 if (!test_bit(STATUS_READY, &priv->status)) {
2662 IWL_ERROR("START_ALIVE timeout after %dms.\n",
2663 jiffies_to_msecs(UCODE_READY_TIMEOUT));
2664 ret = -ETIMEDOUT;
2665 goto out_release_irq;
2666 }
2667 }
2668
2669 out:
2670 priv->is_open = 1;
2671 IWL_DEBUG_MAC80211("leave\n");
2672 return 0;
2673
2674 out_release_irq:
2675 free_irq(priv->pci_dev->irq, priv);
2676 out_disable_msi:
2677 pci_disable_msi(priv->pci_dev);
2678 pci_disable_device(priv->pci_dev);
2679 priv->is_open = 0;
2680 IWL_DEBUG_MAC80211("leave - failed\n");
2681 return ret;
2682 }
2683
2684 static void iwl4965_mac_stop(struct ieee80211_hw *hw)
2685 {
2686 struct iwl_priv *priv = hw->priv;
2687
2688 IWL_DEBUG_MAC80211("enter\n");
2689
2690 if (!priv->is_open) {
2691 IWL_DEBUG_MAC80211("leave - skip\n");
2692 return;
2693 }
2694
2695 priv->is_open = 0;
2696
2697 if (iwl_is_ready_rf(priv)) {
2698 /* stop mac, cancel any scan request and clear
2699 * RXON_FILTER_ASSOC_MSK BIT
2700 */
2701 mutex_lock(&priv->mutex);
2702 iwl_scan_cancel_timeout(priv, 100);
2703 mutex_unlock(&priv->mutex);
2704 }
2705
2706 iwl4965_down(priv);
2707
2708 flush_workqueue(priv->workqueue);
2709 free_irq(priv->pci_dev->irq, priv);
2710 pci_disable_msi(priv->pci_dev);
2711 pci_save_state(priv->pci_dev);
2712 pci_disable_device(priv->pci_dev);
2713
2714 IWL_DEBUG_MAC80211("leave\n");
2715 }
2716
2717 static int iwl4965_mac_tx(struct ieee80211_hw *hw, struct sk_buff *skb)
2718 {
2719 struct iwl_priv *priv = hw->priv;
2720
2721 IWL_DEBUG_MACDUMP("enter\n");
2722
2723 if (priv->iw_mode == IEEE80211_IF_TYPE_MNTR) {
2724 IWL_DEBUG_MAC80211("leave - monitor\n");
2725 dev_kfree_skb_any(skb);
2726 return 0;
2727 }
2728
2729 IWL_DEBUG_TX("dev->xmit(%d bytes) at rate 0x%02x\n", skb->len,
2730 ieee80211_get_tx_rate(hw, IEEE80211_SKB_CB(skb))->bitrate);
2731
2732 if (iwl_tx_skb(priv, skb))
2733 dev_kfree_skb_any(skb);
2734
2735 IWL_DEBUG_MACDUMP("leave\n");
2736 return 0;
2737 }
2738
2739 static int iwl4965_mac_add_interface(struct ieee80211_hw *hw,
2740 struct ieee80211_if_init_conf *conf)
2741 {
2742 struct iwl_priv *priv = hw->priv;
2743 unsigned long flags;
2744 DECLARE_MAC_BUF(mac);
2745
2746 IWL_DEBUG_MAC80211("enter: type %d\n", conf->type);
2747
2748 if (priv->vif) {
2749 IWL_DEBUG_MAC80211("leave - vif != NULL\n");
2750 return -EOPNOTSUPP;
2751 }
2752
2753 spin_lock_irqsave(&priv->lock, flags);
2754 priv->vif = conf->vif;
2755
2756 spin_unlock_irqrestore(&priv->lock, flags);
2757
2758 mutex_lock(&priv->mutex);
2759
2760 if (conf->mac_addr) {
2761 IWL_DEBUG_MAC80211("Set %s\n", print_mac(mac, conf->mac_addr));
2762 memcpy(priv->mac_addr, conf->mac_addr, ETH_ALEN);
2763 }
2764
2765 if (iwl4965_set_mode(priv, conf->type) == -EAGAIN)
2766 /* we are not ready, will run again when ready */
2767 set_bit(STATUS_MODE_PENDING, &priv->status);
2768
2769 mutex_unlock(&priv->mutex);
2770
2771 IWL_DEBUG_MAC80211("leave\n");
2772 return 0;
2773 }
2774
2775 /**
2776 * iwl4965_mac_config - mac80211 config callback
2777 *
2778 * We ignore conf->flags & IEEE80211_CONF_SHORT_SLOT_TIME since it seems to
2779 * be set inappropriately and the driver currently sets the hardware up to
2780 * use it whenever needed.
2781 */
2782 static int iwl4965_mac_config(struct ieee80211_hw *hw, struct ieee80211_conf *conf)
2783 {
2784 struct iwl_priv *priv = hw->priv;
2785 const struct iwl_channel_info *ch_info;
2786 unsigned long flags;
2787 int ret = 0;
2788 u16 channel;
2789
2790 mutex_lock(&priv->mutex);
2791 IWL_DEBUG_MAC80211("enter to channel %d\n", conf->channel->hw_value);
2792
2793 if (conf->radio_enabled && iwl_radio_kill_sw_enable_radio(priv)) {
2794 IWL_DEBUG_MAC80211("leave - RF-KILL - waiting for uCode\n");
2795 goto out;
2796 }
2797
2798 if (!conf->radio_enabled)
2799 iwl_radio_kill_sw_disable_radio(priv);
2800
2801 if (!iwl_is_ready(priv)) {
2802 IWL_DEBUG_MAC80211("leave - not ready\n");
2803 ret = -EIO;
2804 goto out;
2805 }
2806
2807 if (unlikely(!priv->cfg->mod_params->disable_hw_scan &&
2808 test_bit(STATUS_SCANNING, &priv->status))) {
2809 IWL_DEBUG_MAC80211("leave - scanning\n");
2810 set_bit(STATUS_CONF_PENDING, &priv->status);
2811 mutex_unlock(&priv->mutex);
2812 return 0;
2813 }
2814
2815 channel = ieee80211_frequency_to_channel(conf->channel->center_freq);
2816 ch_info = iwl_get_channel_info(priv, conf->channel->band, channel);
2817 if (!is_channel_valid(ch_info)) {
2818 IWL_DEBUG_MAC80211("leave - invalid channel\n");
2819 ret = -EINVAL;
2820 goto out;
2821 }
2822
2823 if (priv->iw_mode == IEEE80211_IF_TYPE_IBSS &&
2824 !is_channel_ibss(ch_info)) {
2825 IWL_ERROR("channel %d in band %d not IBSS channel\n",
2826 conf->channel->hw_value, conf->channel->band);
2827 ret = -EINVAL;
2828 goto out;
2829 }
2830
2831 spin_lock_irqsave(&priv->lock, flags);
2832
2833
2834 /* if we are switching from ht to 2.4 clear flags
2835 * from any ht related info since 2.4 does not
2836 * support ht */
2837 if ((le16_to_cpu(priv->staging_rxon.channel) != channel)
2838 #ifdef IEEE80211_CONF_CHANNEL_SWITCH
2839 && !(conf->flags & IEEE80211_CONF_CHANNEL_SWITCH)
2840 #endif
2841 )
2842 priv->staging_rxon.flags = 0;
2843
2844 iwl_set_rxon_channel(priv, conf->channel);
2845
2846 iwl_set_flags_for_band(priv, conf->channel->band);
2847
2848 /* The list of supported rates and rate mask can be different
2849 * for each band; since the band may have changed, reset
2850 * the rate mask to what mac80211 lists */
2851 iwl4965_set_rate(priv);
2852
2853 spin_unlock_irqrestore(&priv->lock, flags);
2854
2855 #ifdef IEEE80211_CONF_CHANNEL_SWITCH
2856 if (conf->flags & IEEE80211_CONF_CHANNEL_SWITCH) {
2857 iwl4965_hw_channel_switch(priv, conf->channel);
2858 goto out;
2859 }
2860 #endif
2861
2862 if (!conf->radio_enabled) {
2863 IWL_DEBUG_MAC80211("leave - radio disabled\n");
2864 goto out;
2865 }
2866
2867 if (iwl_is_rfkill(priv)) {
2868 IWL_DEBUG_MAC80211("leave - RF kill\n");
2869 ret = -EIO;
2870 goto out;
2871 }
2872
2873 IWL_DEBUG_MAC80211("TX Power old=%d new=%d\n",
2874 priv->tx_power_user_lmt, conf->power_level);
2875
2876 iwl_set_tx_power(priv, conf->power_level, false);
2877
2878 iwl4965_set_rate(priv);
2879
2880 if (memcmp(&priv->active_rxon,
2881 &priv->staging_rxon, sizeof(priv->staging_rxon)))
2882 iwl4965_commit_rxon(priv);
2883 else
2884 IWL_DEBUG_INFO("No re-sending same RXON configuration.\n");
2885
2886 IWL_DEBUG_MAC80211("leave\n");
2887
2888 out:
2889 clear_bit(STATUS_CONF_PENDING, &priv->status);
2890 mutex_unlock(&priv->mutex);
2891 return ret;
2892 }
2893
2894 static void iwl4965_config_ap(struct iwl_priv *priv)
2895 {
2896 int ret = 0;
2897 unsigned long flags;
2898
2899 if (test_bit(STATUS_EXIT_PENDING, &priv->status))
2900 return;
2901
2902 /* The following should be done only at AP bring up */
2903 if (!(iwl_is_associated(priv))) {
2904
2905 /* RXON - unassoc (to set timing command) */
2906 priv->staging_rxon.filter_flags &= ~RXON_FILTER_ASSOC_MSK;
2907 iwl4965_commit_rxon(priv);
2908
2909 /* RXON Timing */
2910 memset(&priv->rxon_timing, 0, sizeof(struct iwl4965_rxon_time_cmd));
2911 iwl4965_setup_rxon_timing(priv);
2912 ret = iwl_send_cmd_pdu(priv, REPLY_RXON_TIMING,
2913 sizeof(priv->rxon_timing), &priv->rxon_timing);
2914 if (ret)
2915 IWL_WARNING("REPLY_RXON_TIMING failed - "
2916 "Attempting to continue.\n");
2917
2918 iwl_set_rxon_chain(priv);
2919
2920 /* FIXME: what should be the assoc_id for AP? */
2921 priv->staging_rxon.assoc_id = cpu_to_le16(priv->assoc_id);
2922 if (priv->assoc_capability & WLAN_CAPABILITY_SHORT_PREAMBLE)
2923 priv->staging_rxon.flags |=
2924 RXON_FLG_SHORT_PREAMBLE_MSK;
2925 else
2926 priv->staging_rxon.flags &=
2927 ~RXON_FLG_SHORT_PREAMBLE_MSK;
2928
2929 if (priv->staging_rxon.flags & RXON_FLG_BAND_24G_MSK) {
2930 if (priv->assoc_capability &
2931 WLAN_CAPABILITY_SHORT_SLOT_TIME)
2932 priv->staging_rxon.flags |=
2933 RXON_FLG_SHORT_SLOT_MSK;
2934 else
2935 priv->staging_rxon.flags &=
2936 ~RXON_FLG_SHORT_SLOT_MSK;
2937
2938 if (priv->iw_mode == IEEE80211_IF_TYPE_IBSS)
2939 priv->staging_rxon.flags &=
2940 ~RXON_FLG_SHORT_SLOT_MSK;
2941 }
2942 /* restore RXON assoc */
2943 priv->staging_rxon.filter_flags |= RXON_FILTER_ASSOC_MSK;
2944 iwl4965_commit_rxon(priv);
2945 spin_lock_irqsave(&priv->lock, flags);
2946 iwl_activate_qos(priv, 1);
2947 spin_unlock_irqrestore(&priv->lock, flags);
2948 iwl_rxon_add_station(priv, iwl_bcast_addr, 0);
2949 }
2950 iwl4965_send_beacon_cmd(priv);
2951
2952 /* FIXME - we need to add code here to detect a totally new
2953 * configuration, reset the AP, unassoc, rxon timing, assoc,
2954 * clear sta table, add BCAST sta... */
2955 }
2956
2957 /* temporary */
2958 static int iwl4965_mac_beacon_update(struct ieee80211_hw *hw, struct sk_buff *skb);
2959
2960 static int iwl4965_mac_config_interface(struct ieee80211_hw *hw,
2961 struct ieee80211_vif *vif,
2962 struct ieee80211_if_conf *conf)
2963 {
2964 struct iwl_priv *priv = hw->priv;
2965 DECLARE_MAC_BUF(mac);
2966 unsigned long flags;
2967 int rc;
2968
2969 if (conf == NULL)
2970 return -EIO;
2971
2972 if (priv->vif != vif) {
2973 IWL_DEBUG_MAC80211("leave - priv->vif != vif\n");
2974 return 0;
2975 }
2976
2977 if (priv->iw_mode == IEEE80211_IF_TYPE_IBSS &&
2978 conf->changed & IEEE80211_IFCC_BEACON) {
2979 struct sk_buff *beacon = ieee80211_beacon_get(hw, vif);
2980 if (!beacon)
2981 return -ENOMEM;
2982 rc = iwl4965_mac_beacon_update(hw, beacon);
2983 if (rc)
2984 return rc;
2985 }
2986
2987 if ((priv->iw_mode == IEEE80211_IF_TYPE_AP) &&
2988 (!conf->ssid_len)) {
2989 IWL_DEBUG_MAC80211
2990 ("Leaving in AP mode because HostAPD is not ready.\n");
2991 return 0;
2992 }
2993
2994 if (!iwl_is_alive(priv))
2995 return -EAGAIN;
2996
2997 mutex_lock(&priv->mutex);
2998
2999 if (conf->bssid)
3000 IWL_DEBUG_MAC80211("bssid: %s\n",
3001 print_mac(mac, conf->bssid));
3002
3003 /*
3004 * very dubious code was here; the probe filtering flag is never set:
3005 *
3006 if (unlikely(test_bit(STATUS_SCANNING, &priv->status)) &&
3007 !(priv->hw->flags & IEEE80211_HW_NO_PROBE_FILTERING)) {
3008 */
3009
3010 if (priv->iw_mode == IEEE80211_IF_TYPE_AP) {
3011 if (!conf->bssid) {
3012 conf->bssid = priv->mac_addr;
3013 memcpy(priv->bssid, priv->mac_addr, ETH_ALEN);
3014 IWL_DEBUG_MAC80211("bssid was set to: %s\n",
3015 print_mac(mac, conf->bssid));
3016 }
3017 if (priv->ibss_beacon)
3018 dev_kfree_skb(priv->ibss_beacon);
3019
3020 priv->ibss_beacon = ieee80211_beacon_get(hw, vif);
3021 }
3022
3023 if (iwl_is_rfkill(priv))
3024 goto done;
3025
3026 if (conf->bssid && !is_zero_ether_addr(conf->bssid) &&
3027 !is_multicast_ether_addr(conf->bssid)) {
3028 /* If there is currently a HW scan going on in the background
3029 * then we need to cancel it else the RXON below will fail. */
3030 if (iwl_scan_cancel_timeout(priv, 100)) {
3031 IWL_WARNING("Aborted scan still in progress "
3032 "after 100ms\n");
3033 IWL_DEBUG_MAC80211("leaving - scan abort failed.\n");
3034 mutex_unlock(&priv->mutex);
3035 return -EAGAIN;
3036 }
3037 memcpy(priv->staging_rxon.bssid_addr, conf->bssid, ETH_ALEN);
3038
3039 /* TODO: Audit driver for usage of these members and see
3040 * if mac80211 deprecates them (priv->bssid looks like it
3041 * shouldn't be there, but I haven't scanned the IBSS code
3042 * to verify) - jpk */
3043 memcpy(priv->bssid, conf->bssid, ETH_ALEN);
3044
3045 if (priv->iw_mode == IEEE80211_IF_TYPE_AP)
3046 iwl4965_config_ap(priv);
3047 else {
3048 rc = iwl4965_commit_rxon(priv);
3049 if ((priv->iw_mode == IEEE80211_IF_TYPE_STA) && rc)
3050 iwl_rxon_add_station(
3051 priv, priv->active_rxon.bssid_addr, 1);
3052 }
3053
3054 } else {
3055 iwl_scan_cancel_timeout(priv, 100);
3056 priv->staging_rxon.filter_flags &= ~RXON_FILTER_ASSOC_MSK;
3057 iwl4965_commit_rxon(priv);
3058 }
3059
3060 done:
3061 spin_lock_irqsave(&priv->lock, flags);
3062 if (!conf->ssid_len)
3063 memset(priv->essid, 0, IW_ESSID_MAX_SIZE);
3064 else
3065 memcpy(priv->essid, conf->ssid, conf->ssid_len);
3066
3067 priv->essid_len = conf->ssid_len;
3068 spin_unlock_irqrestore(&priv->lock, flags);
3069
3070 IWL_DEBUG_MAC80211("leave\n");
3071 mutex_unlock(&priv->mutex);
3072
3073 return 0;
3074 }
3075
3076 static void iwl4965_configure_filter(struct ieee80211_hw *hw,
3077 unsigned int changed_flags,
3078 unsigned int *total_flags,
3079 int mc_count, struct dev_addr_list *mc_list)
3080 {
3081 struct iwl_priv *priv = hw->priv;
3082
3083 if (changed_flags & (*total_flags) & FIF_OTHER_BSS) {
3084 IWL_DEBUG_MAC80211("Enter: type %d (0x%x, 0x%x)\n",
3085 IEEE80211_IF_TYPE_MNTR,
3086 changed_flags, *total_flags);
3087 /* queue work 'cuz mac80211 is holding a lock which
3088 * prevents us from issuing (synchronous) f/w cmds */
3089 queue_work(priv->workqueue, &priv->set_monitor);
3090 }
3091 *total_flags &= FIF_OTHER_BSS | FIF_ALLMULTI |
3092 FIF_BCN_PRBRESP_PROMISC | FIF_CONTROL;
3093 }
3094
3095 static void iwl4965_mac_remove_interface(struct ieee80211_hw *hw,
3096 struct ieee80211_if_init_conf *conf)
3097 {
3098 struct iwl_priv *priv = hw->priv;
3099
3100 IWL_DEBUG_MAC80211("enter\n");
3101
3102 mutex_lock(&priv->mutex);
3103
3104 if (iwl_is_ready_rf(priv)) {
3105 iwl_scan_cancel_timeout(priv, 100);
3106 priv->staging_rxon.filter_flags &= ~RXON_FILTER_ASSOC_MSK;
3107 iwl4965_commit_rxon(priv);
3108 }
3109 if (priv->vif == conf->vif) {
3110 priv->vif = NULL;
3111 memset(priv->bssid, 0, ETH_ALEN);
3112 memset(priv->essid, 0, IW_ESSID_MAX_SIZE);
3113 priv->essid_len = 0;
3114 }
3115 mutex_unlock(&priv->mutex);
3116
3117 IWL_DEBUG_MAC80211("leave\n");
3118
3119 }
3120
3121 #define IWL_DELAY_NEXT_SCAN_AFTER_ASSOC (HZ*6)
3122 static void iwl4965_bss_info_changed(struct ieee80211_hw *hw,
3123 struct ieee80211_vif *vif,
3124 struct ieee80211_bss_conf *bss_conf,
3125 u32 changes)
3126 {
3127 struct iwl_priv *priv = hw->priv;
3128
3129 IWL_DEBUG_MAC80211("changes = 0x%X\n", changes);
3130
3131 if (changes & BSS_CHANGED_ERP_PREAMBLE) {
3132 IWL_DEBUG_MAC80211("ERP_PREAMBLE %d\n",
3133 bss_conf->use_short_preamble);
3134 if (bss_conf->use_short_preamble)
3135 priv->staging_rxon.flags |= RXON_FLG_SHORT_PREAMBLE_MSK;
3136 else
3137 priv->staging_rxon.flags &= ~RXON_FLG_SHORT_PREAMBLE_MSK;
3138 }
3139
3140 if (changes & BSS_CHANGED_ERP_CTS_PROT) {
3141 IWL_DEBUG_MAC80211("ERP_CTS %d\n", bss_conf->use_cts_prot);
3142 if (bss_conf->use_cts_prot && (priv->band != IEEE80211_BAND_5GHZ))
3143 priv->staging_rxon.flags |= RXON_FLG_TGG_PROTECT_MSK;
3144 else
3145 priv->staging_rxon.flags &= ~RXON_FLG_TGG_PROTECT_MSK;
3146 }
3147
3148 if (changes & BSS_CHANGED_HT) {
3149 IWL_DEBUG_MAC80211("HT %d\n", bss_conf->assoc_ht);
3150 iwl4965_ht_conf(priv, bss_conf);
3151 iwl_set_rxon_chain(priv);
3152 }
3153
3154 if (changes & BSS_CHANGED_ASSOC) {
3155 IWL_DEBUG_MAC80211("ASSOC %d\n", bss_conf->assoc);
3156 /* This should never happen as this function should
3157 * never be called from interrupt context. */
3158 if (WARN_ON_ONCE(in_interrupt()))
3159 return;
3160 if (bss_conf->assoc) {
3161 priv->assoc_id = bss_conf->aid;
3162 priv->beacon_int = bss_conf->beacon_int;
3163 priv->power_data.dtim_period = bss_conf->dtim_period;
3164 priv->timestamp = bss_conf->timestamp;
3165 priv->assoc_capability = bss_conf->assoc_capability;
3166 priv->next_scan_jiffies = jiffies +
3167 IWL_DELAY_NEXT_SCAN_AFTER_ASSOC;
3168 mutex_lock(&priv->mutex);
3169 iwl4965_post_associate(priv);
3170 mutex_unlock(&priv->mutex);
3171 } else {
3172 priv->assoc_id = 0;
3173 IWL_DEBUG_MAC80211("DISASSOC %d\n", bss_conf->assoc);
3174 }
3175 } else if (changes && iwl_is_associated(priv) && priv->assoc_id) {
3176 IWL_DEBUG_MAC80211("Associated Changes %d\n", changes);
3177 iwl_send_rxon_assoc(priv);
3178 }
3179
3180 }
3181
3182 static int iwl_mac_hw_scan(struct ieee80211_hw *hw, u8 *ssid, size_t ssid_len)
3183 {
3184 int ret;
3185 unsigned long flags;
3186 struct iwl_priv *priv = hw->priv;
3187
3188 IWL_DEBUG_MAC80211("enter\n");
3189
3190 mutex_lock(&priv->mutex);
3191 spin_lock_irqsave(&priv->lock, flags);
3192
3193 if (!iwl_is_ready_rf(priv)) {
3194 ret = -EIO;
3195 IWL_DEBUG_MAC80211("leave - not ready or exit pending\n");
3196 goto out_unlock;
3197 }
3198
3199 if (priv->iw_mode == IEEE80211_IF_TYPE_AP) { /* APs don't scan */
3200 ret = -EIO;
3201 IWL_ERROR("ERROR: APs don't scan\n");
3202 goto out_unlock;
3203 }
3204
3205 /* we don't schedule scan within next_scan_jiffies period */
3206 if (priv->next_scan_jiffies &&
3207 time_after(priv->next_scan_jiffies, jiffies)) {
3208 IWL_DEBUG_SCAN("scan rejected: within next scan period\n");
3209 ret = -EAGAIN;
3210 goto out_unlock;
3211 }
3212 /* if we just finished scan ask for delay */
3213 if (iwl_is_associated(priv) && priv->last_scan_jiffies &&
3214 time_after(priv->last_scan_jiffies + IWL_DELAY_NEXT_SCAN, jiffies)) {
3215 IWL_DEBUG_SCAN("scan rejected: within previous scan period\n");
3216 ret = -EAGAIN;
3217 goto out_unlock;
3218 }
3219 if (ssid_len) {
3220 priv->one_direct_scan = 1;
3221 priv->direct_ssid_len = min_t(u8, ssid_len, IW_ESSID_MAX_SIZE);
3222 memcpy(priv->direct_ssid, ssid, priv->direct_ssid_len);
3223 } else {
3224 priv->one_direct_scan = 0;
3225 }
3226
3227 ret = iwl_scan_initiate(priv);
3228
3229 IWL_DEBUG_MAC80211("leave\n");
3230
3231 out_unlock:
3232 spin_unlock_irqrestore(&priv->lock, flags);
3233 mutex_unlock(&priv->mutex);
3234
3235 return ret;
3236 }
3237
3238 static void iwl4965_mac_update_tkip_key(struct ieee80211_hw *hw,
3239 struct ieee80211_key_conf *keyconf, const u8 *addr,
3240 u32 iv32, u16 *phase1key)
3241 {
3242 struct iwl_priv *priv = hw->priv;
3243 u8 sta_id = IWL_INVALID_STATION;
3244 unsigned long flags;
3245 __le16 key_flags = 0;
3246 int i;
3247 DECLARE_MAC_BUF(mac);
3248
3249 IWL_DEBUG_MAC80211("enter\n");
3250
3251 sta_id = iwl_find_station(priv, addr);
3252 if (sta_id == IWL_INVALID_STATION) {
3253 IWL_DEBUG_MAC80211("leave - %s not in station map.\n",
3254 print_mac(mac, addr));
3255 return;
3256 }
3257
3258 iwl_scan_cancel_timeout(priv, 100);
3259
3260 key_flags |= (STA_KEY_FLG_TKIP | STA_KEY_FLG_MAP_KEY_MSK);
3261 key_flags |= cpu_to_le16(keyconf->keyidx << STA_KEY_FLG_KEYID_POS);
3262 key_flags &= ~STA_KEY_FLG_INVALID;
3263
3264 if (sta_id == priv->hw_params.bcast_sta_id)
3265 key_flags |= STA_KEY_MULTICAST_MSK;
3266
3267 spin_lock_irqsave(&priv->sta_lock, flags);
3268
3269 priv->stations[sta_id].sta.key.key_flags = key_flags;
3270 priv->stations[sta_id].sta.key.tkip_rx_tsc_byte2 = (u8) iv32;
3271
3272 for (i = 0; i < 5; i++)
3273 priv->stations[sta_id].sta.key.tkip_rx_ttak[i] =
3274 cpu_to_le16(phase1key[i]);
3275
3276 priv->stations[sta_id].sta.sta.modify_mask = STA_MODIFY_KEY_MASK;
3277 priv->stations[sta_id].sta.mode = STA_CONTROL_MODIFY_MSK;
3278
3279 iwl_send_add_sta(priv, &priv->stations[sta_id].sta, CMD_ASYNC);
3280
3281 spin_unlock_irqrestore(&priv->sta_lock, flags);
3282
3283 IWL_DEBUG_MAC80211("leave\n");
3284 }
3285
3286 static int iwl4965_mac_set_key(struct ieee80211_hw *hw, enum set_key_cmd cmd,
3287 const u8 *local_addr, const u8 *addr,
3288 struct ieee80211_key_conf *key)
3289 {
3290 struct iwl_priv *priv = hw->priv;
3291 DECLARE_MAC_BUF(mac);
3292 int ret = 0;
3293 u8 sta_id = IWL_INVALID_STATION;
3294 u8 is_default_wep_key = 0;
3295
3296 IWL_DEBUG_MAC80211("enter\n");
3297
3298 if (priv->hw_params.sw_crypto) {
3299 IWL_DEBUG_MAC80211("leave - hwcrypto disabled\n");
3300 return -EOPNOTSUPP;
3301 }
3302
3303 if (is_zero_ether_addr(addr))
3304 /* only support pairwise keys */
3305 return -EOPNOTSUPP;
3306
3307 sta_id = iwl_find_station(priv, addr);
3308 if (sta_id == IWL_INVALID_STATION) {
3309 IWL_DEBUG_MAC80211("leave - %s not in station map.\n",
3310 print_mac(mac, addr));
3311 return -EINVAL;
3312
3313 }
3314
3315 mutex_lock(&priv->mutex);
3316 iwl_scan_cancel_timeout(priv, 100);
3317 mutex_unlock(&priv->mutex);
3318
3319 /* If we are getting WEP group key and we didn't receive any key mapping
3320 * so far, we are in legacy wep mode (group key only), otherwise we are
3321 * in 1X mode.
3322 * In legacy wep mode, we use another host command to the uCode */
3323 if (key->alg == ALG_WEP && sta_id == priv->hw_params.bcast_sta_id &&
3324 priv->iw_mode != IEEE80211_IF_TYPE_AP) {
3325 if (cmd == SET_KEY)
3326 is_default_wep_key = !priv->key_mapping_key;
3327 else
3328 is_default_wep_key =
3329 (key->hw_key_idx == HW_KEY_DEFAULT);
3330 }
3331
3332 switch (cmd) {
3333 case SET_KEY:
3334 if (is_default_wep_key)
3335 ret = iwl_set_default_wep_key(priv, key);
3336 else
3337 ret = iwl_set_dynamic_key(priv, key, sta_id);
3338
3339 IWL_DEBUG_MAC80211("enable hwcrypto key\n");
3340 break;
3341 case DISABLE_KEY:
3342 if (is_default_wep_key)
3343 ret = iwl_remove_default_wep_key(priv, key);
3344 else
3345 ret = iwl_remove_dynamic_key(priv, key, sta_id);
3346
3347 IWL_DEBUG_MAC80211("disable hwcrypto key\n");
3348 break;
3349 default:
3350 ret = -EINVAL;
3351 }
3352
3353 IWL_DEBUG_MAC80211("leave\n");
3354
3355 return ret;
3356 }
3357
3358 static int iwl4965_mac_conf_tx(struct ieee80211_hw *hw, u16 queue,
3359 const struct ieee80211_tx_queue_params *params)
3360 {
3361 struct iwl_priv *priv = hw->priv;
3362 unsigned long flags;
3363 int q;
3364
3365 IWL_DEBUG_MAC80211("enter\n");
3366
3367 if (!iwl_is_ready_rf(priv)) {
3368 IWL_DEBUG_MAC80211("leave - RF not ready\n");
3369 return -EIO;
3370 }
3371
3372 if (queue >= AC_NUM) {
3373 IWL_DEBUG_MAC80211("leave - queue >= AC_NUM %d\n", queue);
3374 return 0;
3375 }
3376
3377 if (!priv->qos_data.qos_enable) {
3378 priv->qos_data.qos_active = 0;
3379 IWL_DEBUG_MAC80211("leave - qos not enabled\n");
3380 return 0;
3381 }
3382 q = AC_NUM - 1 - queue;
3383
3384 spin_lock_irqsave(&priv->lock, flags);
3385
3386 priv->qos_data.def_qos_parm.ac[q].cw_min = cpu_to_le16(params->cw_min);
3387 priv->qos_data.def_qos_parm.ac[q].cw_max = cpu_to_le16(params->cw_max);
3388 priv->qos_data.def_qos_parm.ac[q].aifsn = params->aifs;
3389 priv->qos_data.def_qos_parm.ac[q].edca_txop =
3390 cpu_to_le16((params->txop * 32));
3391
3392 priv->qos_data.def_qos_parm.ac[q].reserved1 = 0;
3393 priv->qos_data.qos_active = 1;
3394
3395 if (priv->iw_mode == IEEE80211_IF_TYPE_AP)
3396 iwl_activate_qos(priv, 1);
3397 else if (priv->assoc_id && iwl_is_associated(priv))
3398 iwl_activate_qos(priv, 0);
3399
3400 spin_unlock_irqrestore(&priv->lock, flags);
3401
3402 IWL_DEBUG_MAC80211("leave\n");
3403 return 0;
3404 }
3405
3406 static int iwl4965_mac_ampdu_action(struct ieee80211_hw *hw,
3407 enum ieee80211_ampdu_mlme_action action,
3408 const u8 *addr, u16 tid, u16 *ssn)
3409 {
3410 struct iwl_priv *priv = hw->priv;
3411 DECLARE_MAC_BUF(mac);
3412
3413 IWL_DEBUG_HT("A-MPDU action on addr %s tid %d\n",
3414 print_mac(mac, addr), tid);
3415
3416 if (!(priv->cfg->sku & IWL_SKU_N))
3417 return -EACCES;
3418
3419 switch (action) {
3420 case IEEE80211_AMPDU_RX_START:
3421 IWL_DEBUG_HT("start Rx\n");
3422 return iwl_rx_agg_start(priv, addr, tid, *ssn);
3423 case IEEE80211_AMPDU_RX_STOP:
3424 IWL_DEBUG_HT("stop Rx\n");
3425 return iwl_rx_agg_stop(priv, addr, tid);
3426 case IEEE80211_AMPDU_TX_START:
3427 IWL_DEBUG_HT("start Tx\n");
3428 return iwl_tx_agg_start(priv, addr, tid, ssn);
3429 case IEEE80211_AMPDU_TX_STOP:
3430 IWL_DEBUG_HT("stop Tx\n");
3431 return iwl_tx_agg_stop(priv, addr, tid);
3432 default:
3433 IWL_DEBUG_HT("unknown\n");
3434 return -EINVAL;
3435 break;
3436 }
3437 return 0;
3438 }
3439 static int iwl4965_mac_get_tx_stats(struct ieee80211_hw *hw,
3440 struct ieee80211_tx_queue_stats *stats)
3441 {
3442 struct iwl_priv *priv = hw->priv;
3443 int i, avail;
3444 struct iwl_tx_queue *txq;
3445 struct iwl_queue *q;
3446 unsigned long flags;
3447
3448 IWL_DEBUG_MAC80211("enter\n");
3449
3450 if (!iwl_is_ready_rf(priv)) {
3451 IWL_DEBUG_MAC80211("leave - RF not ready\n");
3452 return -EIO;
3453 }
3454
3455 spin_lock_irqsave(&priv->lock, flags);
3456
3457 for (i = 0; i < AC_NUM; i++) {
3458 txq = &priv->txq[i];
3459 q = &txq->q;
3460 avail = iwl_queue_space(q);
3461
3462 stats[i].len = q->n_window - avail;
3463 stats[i].limit = q->n_window - q->high_mark;
3464 stats[i].count = q->n_window;
3465
3466 }
3467 spin_unlock_irqrestore(&priv->lock, flags);
3468
3469 IWL_DEBUG_MAC80211("leave\n");
3470
3471 return 0;
3472 }
3473
3474 static int iwl4965_mac_get_stats(struct ieee80211_hw *hw,
3475 struct ieee80211_low_level_stats *stats)
3476 {
3477 struct iwl_priv *priv = hw->priv;
3478
3479 priv = hw->priv;
3480 IWL_DEBUG_MAC80211("enter\n");
3481 IWL_DEBUG_MAC80211("leave\n");
3482
3483 return 0;
3484 }
3485
3486 static void iwl4965_mac_reset_tsf(struct ieee80211_hw *hw)
3487 {
3488 struct iwl_priv *priv = hw->priv;
3489 unsigned long flags;
3490
3491 mutex_lock(&priv->mutex);
3492 IWL_DEBUG_MAC80211("enter\n");
3493
3494 spin_lock_irqsave(&priv->lock, flags);
3495 memset(&priv->current_ht_config, 0, sizeof(struct iwl_ht_info));
3496 spin_unlock_irqrestore(&priv->lock, flags);
3497
3498 iwl_reset_qos(priv);
3499
3500 spin_lock_irqsave(&priv->lock, flags);
3501 priv->assoc_id = 0;
3502 priv->assoc_capability = 0;
3503 priv->assoc_station_added = 0;
3504
3505 /* new association get rid of ibss beacon skb */
3506 if (priv->ibss_beacon)
3507 dev_kfree_skb(priv->ibss_beacon);
3508
3509 priv->ibss_beacon = NULL;
3510
3511 priv->beacon_int = priv->hw->conf.beacon_int;
3512 priv->timestamp = 0;
3513 if ((priv->iw_mode == IEEE80211_IF_TYPE_STA))
3514 priv->beacon_int = 0;
3515
3516 spin_unlock_irqrestore(&priv->lock, flags);
3517
3518 if (!iwl_is_ready_rf(priv)) {
3519 IWL_DEBUG_MAC80211("leave - not ready\n");
3520 mutex_unlock(&priv->mutex);
3521 return;
3522 }
3523
3524 /* we are restarting association process
3525 * clear RXON_FILTER_ASSOC_MSK bit
3526 */
3527 if (priv->iw_mode != IEEE80211_IF_TYPE_AP) {
3528 iwl_scan_cancel_timeout(priv, 100);
3529 priv->staging_rxon.filter_flags &= ~RXON_FILTER_ASSOC_MSK;
3530 iwl4965_commit_rxon(priv);
3531 }
3532
3533 iwl_power_update_mode(priv, 0);
3534
3535 /* Per mac80211.h: This is only used in IBSS mode... */
3536 if (priv->iw_mode != IEEE80211_IF_TYPE_IBSS) {
3537
3538 IWL_DEBUG_MAC80211("leave - not in IBSS\n");
3539 mutex_unlock(&priv->mutex);
3540 return;
3541 }
3542
3543 iwl4965_set_rate(priv);
3544
3545 mutex_unlock(&priv->mutex);
3546
3547 IWL_DEBUG_MAC80211("leave\n");
3548 }
3549
3550 static int iwl4965_mac_beacon_update(struct ieee80211_hw *hw, struct sk_buff *skb)
3551 {
3552 struct iwl_priv *priv = hw->priv;
3553 unsigned long flags;
3554 __le64 timestamp;
3555
3556 mutex_lock(&priv->mutex);
3557 IWL_DEBUG_MAC80211("enter\n");
3558
3559 if (!iwl_is_ready_rf(priv)) {
3560 IWL_DEBUG_MAC80211("leave - RF not ready\n");
3561 mutex_unlock(&priv->mutex);
3562 return -EIO;
3563 }
3564
3565 if (priv->iw_mode != IEEE80211_IF_TYPE_IBSS) {
3566 IWL_DEBUG_MAC80211("leave - not IBSS\n");
3567 mutex_unlock(&priv->mutex);
3568 return -EIO;
3569 }
3570
3571 spin_lock_irqsave(&priv->lock, flags);
3572
3573 if (priv->ibss_beacon)
3574 dev_kfree_skb(priv->ibss_beacon);
3575
3576 priv->ibss_beacon = skb;
3577
3578 priv->assoc_id = 0;
3579 timestamp = ((struct ieee80211_mgmt *)skb->data)->u.beacon.timestamp;
3580 priv->timestamp = le64_to_cpu(timestamp) + (priv->beacon_int * 1000);
3581
3582 IWL_DEBUG_MAC80211("leave\n");
3583 spin_unlock_irqrestore(&priv->lock, flags);
3584
3585 iwl_reset_qos(priv);
3586
3587 iwl4965_post_associate(priv);
3588
3589 mutex_unlock(&priv->mutex);
3590
3591 return 0;
3592 }
3593
3594 /*****************************************************************************
3595 *
3596 * sysfs attributes
3597 *
3598 *****************************************************************************/
3599
3600 #ifdef CONFIG_IWLWIFI_DEBUG
3601
3602 /*
3603 * The following adds a new attribute to the sysfs representation
3604 * of this device driver (i.e. a new file in /sys/bus/pci/drivers/iwl/)
3605 * used for controlling the debug level.
3606 *
3607 * See the level definitions in iwl for details.
3608 */
3609
3610 static ssize_t show_debug_level(struct device *d,
3611 struct device_attribute *attr, char *buf)
3612 {
3613 struct iwl_priv *priv = d->driver_data;
3614
3615 return sprintf(buf, "0x%08X\n", priv->debug_level);
3616 }
3617 static ssize_t store_debug_level(struct device *d,
3618 struct device_attribute *attr,
3619 const char *buf, size_t count)
3620 {
3621 struct iwl_priv *priv = d->driver_data;
3622 unsigned long val;
3623 int ret;
3624
3625 ret = strict_strtoul(buf, 0, &val);
3626 if (ret)
3627 printk(KERN_INFO DRV_NAME
3628 ": %s is not in hex or decimal form.\n", buf);
3629 else
3630 priv->debug_level = val;
3631
3632 return strnlen(buf, count);
3633 }
3634
3635 static DEVICE_ATTR(debug_level, S_IWUSR | S_IRUGO,
3636 show_debug_level, store_debug_level);
3637
3638
3639 #endif /* CONFIG_IWLWIFI_DEBUG */
3640
3641
3642 static ssize_t show_version(struct device *d,
3643 struct device_attribute *attr, char *buf)
3644 {
3645 struct iwl_priv *priv = d->driver_data;
3646 struct iwl_alive_resp *palive = &priv->card_alive;
3647 ssize_t pos = 0;
3648 u16 eeprom_ver;
3649
3650 if (palive->is_valid)
3651 pos += sprintf(buf + pos,
3652 "fw version: 0x%01X.0x%01X.0x%01X.0x%01X\n"
3653 "fw type: 0x%01X 0x%01X\n",
3654 palive->ucode_major, palive->ucode_minor,
3655 palive->sw_rev[0], palive->sw_rev[1],
3656 palive->ver_type, palive->ver_subtype);
3657 else
3658 pos += sprintf(buf + pos, "fw not loaded\n");
3659
3660 if (priv->eeprom) {
3661 eeprom_ver = iwl_eeprom_query16(priv, EEPROM_VERSION);
3662 pos += sprintf(buf + pos, "EEPROM version: 0x%x\n",
3663 eeprom_ver);
3664 } else {
3665 pos += sprintf(buf + pos, "EEPROM not initialzed\n");
3666 }
3667
3668 return pos;
3669 }
3670
3671 static DEVICE_ATTR(version, S_IWUSR | S_IRUGO, show_version, NULL);
3672
3673 static ssize_t show_temperature(struct device *d,
3674 struct device_attribute *attr, char *buf)
3675 {
3676 struct iwl_priv *priv = (struct iwl_priv *)d->driver_data;
3677
3678 if (!iwl_is_alive(priv))
3679 return -EAGAIN;
3680
3681 return sprintf(buf, "%d\n", priv->temperature);
3682 }
3683
3684 static DEVICE_ATTR(temperature, S_IRUGO, show_temperature, NULL);
3685
3686 static ssize_t show_tx_power(struct device *d,
3687 struct device_attribute *attr, char *buf)
3688 {
3689 struct iwl_priv *priv = (struct iwl_priv *)d->driver_data;
3690 return sprintf(buf, "%d\n", priv->tx_power_user_lmt);
3691 }
3692
3693 static ssize_t store_tx_power(struct device *d,
3694 struct device_attribute *attr,
3695 const char *buf, size_t count)
3696 {
3697 struct iwl_priv *priv = (struct iwl_priv *)d->driver_data;
3698 unsigned long val;
3699 int ret;
3700
3701 ret = strict_strtoul(buf, 10, &val);
3702 if (ret)
3703 printk(KERN_INFO DRV_NAME
3704 ": %s is not in decimal form.\n", buf);
3705 else
3706 iwl_set_tx_power(priv, val, false);
3707
3708 return count;
3709 }
3710
3711 static DEVICE_ATTR(tx_power, S_IWUSR | S_IRUGO, show_tx_power, store_tx_power);
3712
3713 static ssize_t show_flags(struct device *d,
3714 struct device_attribute *attr, char *buf)
3715 {
3716 struct iwl_priv *priv = (struct iwl_priv *)d->driver_data;
3717
3718 return sprintf(buf, "0x%04X\n", priv->active_rxon.flags);
3719 }
3720
3721 static ssize_t store_flags(struct device *d,
3722 struct device_attribute *attr,
3723 const char *buf, size_t count)
3724 {
3725 struct iwl_priv *priv = (struct iwl_priv *)d->driver_data;
3726 unsigned long val;
3727 u32 flags;
3728 int ret = strict_strtoul(buf, 0, &val);
3729 if (ret)
3730 return ret;
3731 flags = (u32)val;
3732
3733 mutex_lock(&priv->mutex);
3734 if (le32_to_cpu(priv->staging_rxon.flags) != flags) {
3735 /* Cancel any currently running scans... */
3736 if (iwl_scan_cancel_timeout(priv, 100))
3737 IWL_WARNING("Could not cancel scan.\n");
3738 else {
3739 IWL_DEBUG_INFO("Commit rxon.flags = 0x%04X\n", flags);
3740 priv->staging_rxon.flags = cpu_to_le32(flags);
3741 iwl4965_commit_rxon(priv);
3742 }
3743 }
3744 mutex_unlock(&priv->mutex);
3745
3746 return count;
3747 }
3748
3749 static DEVICE_ATTR(flags, S_IWUSR | S_IRUGO, show_flags, store_flags);
3750
3751 static ssize_t show_filter_flags(struct device *d,
3752 struct device_attribute *attr, char *buf)
3753 {
3754 struct iwl_priv *priv = (struct iwl_priv *)d->driver_data;
3755
3756 return sprintf(buf, "0x%04X\n",
3757 le32_to_cpu(priv->active_rxon.filter_flags));
3758 }
3759
3760 static ssize_t store_filter_flags(struct device *d,
3761 struct device_attribute *attr,
3762 const char *buf, size_t count)
3763 {
3764 struct iwl_priv *priv = (struct iwl_priv *)d->driver_data;
3765 unsigned long val;
3766 u32 filter_flags;
3767 int ret = strict_strtoul(buf, 0, &val);
3768 if (ret)
3769 return ret;
3770 filter_flags = (u32)val;
3771
3772 mutex_lock(&priv->mutex);
3773 if (le32_to_cpu(priv->staging_rxon.filter_flags) != filter_flags) {
3774 /* Cancel any currently running scans... */
3775 if (iwl_scan_cancel_timeout(priv, 100))
3776 IWL_WARNING("Could not cancel scan.\n");
3777 else {
3778 IWL_DEBUG_INFO("Committing rxon.filter_flags = "
3779 "0x%04X\n", filter_flags);
3780 priv->staging_rxon.filter_flags =
3781 cpu_to_le32(filter_flags);
3782 iwl4965_commit_rxon(priv);
3783 }
3784 }
3785 mutex_unlock(&priv->mutex);
3786
3787 return count;
3788 }
3789
3790 static DEVICE_ATTR(filter_flags, S_IWUSR | S_IRUGO, show_filter_flags,
3791 store_filter_flags);
3792
3793 #ifdef CONFIG_IWLAGN_SPECTRUM_MEASUREMENT
3794
3795 static ssize_t show_measurement(struct device *d,
3796 struct device_attribute *attr, char *buf)
3797 {
3798 struct iwl_priv *priv = dev_get_drvdata(d);
3799 struct iwl4965_spectrum_notification measure_report;
3800 u32 size = sizeof(measure_report), len = 0, ofs = 0;
3801 u8 *data = (u8 *)&measure_report;
3802 unsigned long flags;
3803
3804 spin_lock_irqsave(&priv->lock, flags);
3805 if (!(priv->measurement_status & MEASUREMENT_READY)) {
3806 spin_unlock_irqrestore(&priv->lock, flags);
3807 return 0;
3808 }
3809 memcpy(&measure_report, &priv->measure_report, size);
3810 priv->measurement_status = 0;
3811 spin_unlock_irqrestore(&priv->lock, flags);
3812
3813 while (size && (PAGE_SIZE - len)) {
3814 hex_dump_to_buffer(data + ofs, size, 16, 1, buf + len,
3815 PAGE_SIZE - len, 1);
3816 len = strlen(buf);
3817 if (PAGE_SIZE - len)
3818 buf[len++] = '\n';
3819
3820 ofs += 16;
3821 size -= min(size, 16U);
3822 }
3823
3824 return len;
3825 }
3826
3827 static ssize_t store_measurement(struct device *d,
3828 struct device_attribute *attr,
3829 const char *buf, size_t count)
3830 {
3831 struct iwl_priv *priv = dev_get_drvdata(d);
3832 struct ieee80211_measurement_params params = {
3833 .channel = le16_to_cpu(priv->active_rxon.channel),
3834 .start_time = cpu_to_le64(priv->last_tsf),
3835 .duration = cpu_to_le16(1),
3836 };
3837 u8 type = IWL_MEASURE_BASIC;
3838 u8 buffer[32];
3839 u8 channel;
3840
3841 if (count) {
3842 char *p = buffer;
3843 strncpy(buffer, buf, min(sizeof(buffer), count));
3844 channel = simple_strtoul(p, NULL, 0);
3845 if (channel)
3846 params.channel = channel;
3847
3848 p = buffer;
3849 while (*p && *p != ' ')
3850 p++;
3851 if (*p)
3852 type = simple_strtoul(p + 1, NULL, 0);
3853 }
3854
3855 IWL_DEBUG_INFO("Invoking measurement of type %d on "
3856 "channel %d (for '%s')\n", type, params.channel, buf);
3857 iwl4965_get_measurement(priv, &params, type);
3858
3859 return count;
3860 }
3861
3862 static DEVICE_ATTR(measurement, S_IRUSR | S_IWUSR,
3863 show_measurement, store_measurement);
3864 #endif /* CONFIG_IWLAGN_SPECTRUM_MEASUREMENT */
3865
3866 static ssize_t store_retry_rate(struct device *d,
3867 struct device_attribute *attr,
3868 const char *buf, size_t count)
3869 {
3870 struct iwl_priv *priv = dev_get_drvdata(d);
3871 long val;
3872 int ret = strict_strtol(buf, 10, &val);
3873 if (!ret)
3874 return ret;
3875
3876 priv->retry_rate = (val > 0) ? val : 1;
3877
3878 return count;
3879 }
3880
3881 static ssize_t show_retry_rate(struct device *d,
3882 struct device_attribute *attr, char *buf)
3883 {
3884 struct iwl_priv *priv = dev_get_drvdata(d);
3885 return sprintf(buf, "%d", priv->retry_rate);
3886 }
3887
3888 static DEVICE_ATTR(retry_rate, S_IWUSR | S_IRUSR, show_retry_rate,
3889 store_retry_rate);
3890
3891 static ssize_t store_power_level(struct device *d,
3892 struct device_attribute *attr,
3893 const char *buf, size_t count)
3894 {
3895 struct iwl_priv *priv = dev_get_drvdata(d);
3896 int ret;
3897 unsigned long mode;
3898
3899
3900 mutex_lock(&priv->mutex);
3901
3902 if (!iwl_is_ready(priv)) {
3903 ret = -EAGAIN;
3904 goto out;
3905 }
3906
3907 ret = strict_strtoul(buf, 10, &mode);
3908 if (ret)
3909 goto out;
3910
3911 ret = iwl_power_set_user_mode(priv, mode);
3912 if (ret) {
3913 IWL_DEBUG_MAC80211("failed setting power mode.\n");
3914 goto out;
3915 }
3916 ret = count;
3917
3918 out:
3919 mutex_unlock(&priv->mutex);
3920 return ret;
3921 }
3922
3923 static ssize_t show_power_level(struct device *d,
3924 struct device_attribute *attr, char *buf)
3925 {
3926 struct iwl_priv *priv = dev_get_drvdata(d);
3927 int mode = priv->power_data.user_power_setting;
3928 int system = priv->power_data.system_power_setting;
3929 int level = priv->power_data.power_mode;
3930 char *p = buf;
3931
3932 switch (system) {
3933 case IWL_POWER_SYS_AUTO:
3934 p += sprintf(p, "SYSTEM:auto");
3935 break;
3936 case IWL_POWER_SYS_AC:
3937 p += sprintf(p, "SYSTEM:ac");
3938 break;
3939 case IWL_POWER_SYS_BATTERY:
3940 p += sprintf(p, "SYSTEM:battery");
3941 break;
3942 }
3943
3944 p += sprintf(p, "\tMODE:%s", (mode < IWL_POWER_AUTO)?"fixed":"auto");
3945 p += sprintf(p, "\tINDEX:%d", level);
3946 p += sprintf(p, "\n");
3947 return p - buf + 1;
3948 }
3949
3950 static DEVICE_ATTR(power_level, S_IWUSR | S_IRUSR, show_power_level,
3951 store_power_level);
3952
3953 static ssize_t show_channels(struct device *d,
3954 struct device_attribute *attr, char *buf)
3955 {
3956
3957 struct iwl_priv *priv = dev_get_drvdata(d);
3958 struct ieee80211_channel *channels = NULL;
3959 const struct ieee80211_supported_band *supp_band = NULL;
3960 int len = 0, i;
3961 int count = 0;
3962
3963 if (!test_bit(STATUS_GEO_CONFIGURED, &priv->status))
3964 return -EAGAIN;
3965
3966 supp_band = iwl_get_hw_mode(priv, IEEE80211_BAND_2GHZ);
3967 channels = supp_band->channels;
3968 count = supp_band->n_channels;
3969
3970 len += sprintf(&buf[len],
3971 "Displaying %d channels in 2.4GHz band "
3972 "(802.11bg):\n", count);
3973
3974 for (i = 0; i < count; i++)
3975 len += sprintf(&buf[len], "%d: %ddBm: BSS%s%s, %s.\n",
3976 ieee80211_frequency_to_channel(
3977 channels[i].center_freq),
3978 channels[i].max_power,
3979 channels[i].flags & IEEE80211_CHAN_RADAR ?
3980 " (IEEE 802.11h required)" : "",
3981 (!(channels[i].flags & IEEE80211_CHAN_NO_IBSS)
3982 || (channels[i].flags &
3983 IEEE80211_CHAN_RADAR)) ? "" :
3984 ", IBSS",
3985 channels[i].flags &
3986 IEEE80211_CHAN_PASSIVE_SCAN ?
3987 "passive only" : "active/passive");
3988
3989 supp_band = iwl_get_hw_mode(priv, IEEE80211_BAND_5GHZ);
3990 channels = supp_band->channels;
3991 count = supp_band->n_channels;
3992
3993 len += sprintf(&buf[len], "Displaying %d channels in 5.2GHz band "
3994 "(802.11a):\n", count);
3995
3996 for (i = 0; i < count; i++)
3997 len += sprintf(&buf[len], "%d: %ddBm: BSS%s%s, %s.\n",
3998 ieee80211_frequency_to_channel(
3999 channels[i].center_freq),
4000 channels[i].max_power,
4001 channels[i].flags & IEEE80211_CHAN_RADAR ?
4002 " (IEEE 802.11h required)" : "",
4003 ((channels[i].flags & IEEE80211_CHAN_NO_IBSS)
4004 || (channels[i].flags &
4005 IEEE80211_CHAN_RADAR)) ? "" :
4006 ", IBSS",
4007 channels[i].flags &
4008 IEEE80211_CHAN_PASSIVE_SCAN ?
4009 "passive only" : "active/passive");
4010
4011 return len;
4012 }
4013
4014 static DEVICE_ATTR(channels, S_IRUSR, show_channels, NULL);
4015
4016 static ssize_t show_statistics(struct device *d,
4017 struct device_attribute *attr, char *buf)
4018 {
4019 struct iwl_priv *priv = dev_get_drvdata(d);
4020 u32 size = sizeof(struct iwl_notif_statistics);
4021 u32 len = 0, ofs = 0;
4022 u8 *data = (u8 *)&priv->statistics;
4023 int rc = 0;
4024
4025 if (!iwl_is_alive(priv))
4026 return -EAGAIN;
4027
4028 mutex_lock(&priv->mutex);
4029 rc = iwl_send_statistics_request(priv, 0);
4030 mutex_unlock(&priv->mutex);
4031
4032 if (rc) {
4033 len = sprintf(buf,
4034 "Error sending statistics request: 0x%08X\n", rc);
4035 return len;
4036 }
4037
4038 while (size && (PAGE_SIZE - len)) {
4039 hex_dump_to_buffer(data + ofs, size, 16, 1, buf + len,
4040 PAGE_SIZE - len, 1);
4041 len = strlen(buf);
4042 if (PAGE_SIZE - len)
4043 buf[len++] = '\n';
4044
4045 ofs += 16;
4046 size -= min(size, 16U);
4047 }
4048
4049 return len;
4050 }
4051
4052 static DEVICE_ATTR(statistics, S_IRUGO, show_statistics, NULL);
4053
4054 static ssize_t show_status(struct device *d,
4055 struct device_attribute *attr, char *buf)
4056 {
4057 struct iwl_priv *priv = (struct iwl_priv *)d->driver_data;
4058 if (!iwl_is_alive(priv))
4059 return -EAGAIN;
4060 return sprintf(buf, "0x%08x\n", (int)priv->status);
4061 }
4062
4063 static DEVICE_ATTR(status, S_IRUGO, show_status, NULL);
4064
4065 /*****************************************************************************
4066 *
4067 * driver setup and teardown
4068 *
4069 *****************************************************************************/
4070
4071 static void iwl_setup_deferred_work(struct iwl_priv *priv)
4072 {
4073 priv->workqueue = create_workqueue(DRV_NAME);
4074
4075 init_waitqueue_head(&priv->wait_command_queue);
4076
4077 INIT_WORK(&priv->up, iwl4965_bg_up);
4078 INIT_WORK(&priv->restart, iwl4965_bg_restart);
4079 INIT_WORK(&priv->rx_replenish, iwl4965_bg_rx_replenish);
4080 INIT_WORK(&priv->rf_kill, iwl4965_bg_rf_kill);
4081 INIT_WORK(&priv->beacon_update, iwl4965_bg_beacon_update);
4082 INIT_WORK(&priv->set_monitor, iwl4965_bg_set_monitor);
4083 INIT_WORK(&priv->run_time_calib_work, iwl_bg_run_time_calib_work);
4084 INIT_DELAYED_WORK(&priv->init_alive_start, iwl_bg_init_alive_start);
4085 INIT_DELAYED_WORK(&priv->alive_start, iwl_bg_alive_start);
4086
4087 /* FIXME : remove when resolved PENDING */
4088 INIT_WORK(&priv->scan_completed, iwl_bg_scan_completed);
4089 iwl_setup_scan_deferred_work(priv);
4090
4091 if (priv->cfg->ops->lib->setup_deferred_work)
4092 priv->cfg->ops->lib->setup_deferred_work(priv);
4093
4094 init_timer(&priv->statistics_periodic);
4095 priv->statistics_periodic.data = (unsigned long)priv;
4096 priv->statistics_periodic.function = iwl4965_bg_statistics_periodic;
4097
4098 tasklet_init(&priv->irq_tasklet, (void (*)(unsigned long))
4099 iwl4965_irq_tasklet, (unsigned long)priv);
4100 }
4101
4102 static void iwl_cancel_deferred_work(struct iwl_priv *priv)
4103 {
4104 if (priv->cfg->ops->lib->cancel_deferred_work)
4105 priv->cfg->ops->lib->cancel_deferred_work(priv);
4106
4107 cancel_delayed_work_sync(&priv->init_alive_start);
4108 cancel_delayed_work(&priv->scan_check);
4109 cancel_delayed_work(&priv->alive_start);
4110 cancel_work_sync(&priv->beacon_update);
4111 del_timer_sync(&priv->statistics_periodic);
4112 }
4113
4114 static struct attribute *iwl4965_sysfs_entries[] = {
4115 &dev_attr_channels.attr,
4116 &dev_attr_flags.attr,
4117 &dev_attr_filter_flags.attr,
4118 #ifdef CONFIG_IWLAGN_SPECTRUM_MEASUREMENT
4119 &dev_attr_measurement.attr,
4120 #endif
4121 &dev_attr_power_level.attr,
4122 &dev_attr_retry_rate.attr,
4123 &dev_attr_statistics.attr,
4124 &dev_attr_status.attr,
4125 &dev_attr_temperature.attr,
4126 &dev_attr_tx_power.attr,
4127 #ifdef CONFIG_IWLWIFI_DEBUG
4128 &dev_attr_debug_level.attr,
4129 #endif
4130 &dev_attr_version.attr,
4131
4132 NULL
4133 };
4134
4135 static struct attribute_group iwl4965_attribute_group = {
4136 .name = NULL, /* put in device directory */
4137 .attrs = iwl4965_sysfs_entries,
4138 };
4139
4140 static struct ieee80211_ops iwl4965_hw_ops = {
4141 .tx = iwl4965_mac_tx,
4142 .start = iwl4965_mac_start,
4143 .stop = iwl4965_mac_stop,
4144 .add_interface = iwl4965_mac_add_interface,
4145 .remove_interface = iwl4965_mac_remove_interface,
4146 .config = iwl4965_mac_config,
4147 .config_interface = iwl4965_mac_config_interface,
4148 .configure_filter = iwl4965_configure_filter,
4149 .set_key = iwl4965_mac_set_key,
4150 .update_tkip_key = iwl4965_mac_update_tkip_key,
4151 .get_stats = iwl4965_mac_get_stats,
4152 .get_tx_stats = iwl4965_mac_get_tx_stats,
4153 .conf_tx = iwl4965_mac_conf_tx,
4154 .reset_tsf = iwl4965_mac_reset_tsf,
4155 .bss_info_changed = iwl4965_bss_info_changed,
4156 .ampdu_action = iwl4965_mac_ampdu_action,
4157 .hw_scan = iwl_mac_hw_scan
4158 };
4159
4160 static int iwl4965_pci_probe(struct pci_dev *pdev, const struct pci_device_id *ent)
4161 {
4162 int err = 0;
4163 struct iwl_priv *priv;
4164 struct ieee80211_hw *hw;
4165 struct iwl_cfg *cfg = (struct iwl_cfg *)(ent->driver_data);
4166 unsigned long flags;
4167 DECLARE_MAC_BUF(mac);
4168
4169 /************************
4170 * 1. Allocating HW data
4171 ************************/
4172
4173 /* Disabling hardware scan means that mac80211 will perform scans
4174 * "the hard way", rather than using device's scan. */
4175 if (cfg->mod_params->disable_hw_scan) {
4176 if (cfg->mod_params->debug & IWL_DL_INFO)
4177 dev_printk(KERN_DEBUG, &(pdev->dev),
4178 "Disabling hw_scan\n");
4179 iwl4965_hw_ops.hw_scan = NULL;
4180 }
4181
4182 hw = iwl_alloc_all(cfg, &iwl4965_hw_ops);
4183 if (!hw) {
4184 err = -ENOMEM;
4185 goto out;
4186 }
4187 priv = hw->priv;
4188 /* At this point both hw and priv are allocated. */
4189
4190 SET_IEEE80211_DEV(hw, &pdev->dev);
4191
4192 IWL_DEBUG_INFO("*** LOAD DRIVER ***\n");
4193 priv->cfg = cfg;
4194 priv->pci_dev = pdev;
4195
4196 #ifdef CONFIG_IWLWIFI_DEBUG
4197 priv->debug_level = priv->cfg->mod_params->debug;
4198 atomic_set(&priv->restrict_refcnt, 0);
4199 #endif
4200
4201 /**************************
4202 * 2. Initializing PCI bus
4203 **************************/
4204 if (pci_enable_device(pdev)) {
4205 err = -ENODEV;
4206 goto out_ieee80211_free_hw;
4207 }
4208
4209 pci_set_master(pdev);
4210
4211 err = pci_set_dma_mask(pdev, DMA_64BIT_MASK);
4212 if (!err)
4213 err = pci_set_consistent_dma_mask(pdev, DMA_64BIT_MASK);
4214 if (err) {
4215 err = pci_set_dma_mask(pdev, DMA_32BIT_MASK);
4216 if (!err)
4217 err = pci_set_consistent_dma_mask(pdev, DMA_32BIT_MASK);
4218 /* both attempts failed: */
4219 if (err) {
4220 printk(KERN_WARNING "%s: No suitable DMA available.\n",
4221 DRV_NAME);
4222 goto out_pci_disable_device;
4223 }
4224 }
4225
4226 err = pci_request_regions(pdev, DRV_NAME);
4227 if (err)
4228 goto out_pci_disable_device;
4229
4230 pci_set_drvdata(pdev, priv);
4231
4232
4233 /***********************
4234 * 3. Read REV register
4235 ***********************/
4236 priv->hw_base = pci_iomap(pdev, 0, 0);
4237 if (!priv->hw_base) {
4238 err = -ENODEV;
4239 goto out_pci_release_regions;
4240 }
4241
4242 IWL_DEBUG_INFO("pci_resource_len = 0x%08llx\n",
4243 (unsigned long long) pci_resource_len(pdev, 0));
4244 IWL_DEBUG_INFO("pci_resource_base = %p\n", priv->hw_base);
4245
4246 iwl_hw_detect(priv);
4247 printk(KERN_INFO DRV_NAME
4248 ": Detected Intel Wireless WiFi Link %s REV=0x%X\n",
4249 priv->cfg->name, priv->hw_rev);
4250
4251 /* We disable the RETRY_TIMEOUT register (0x41) to keep
4252 * PCI Tx retries from interfering with C3 CPU state */
4253 pci_write_config_byte(pdev, PCI_CFG_RETRY_TIMEOUT, 0x00);
4254
4255 /* amp init */
4256 err = priv->cfg->ops->lib->apm_ops.init(priv);
4257 if (err < 0) {
4258 IWL_DEBUG_INFO("Failed to init APMG\n");
4259 goto out_iounmap;
4260 }
4261 /*****************
4262 * 4. Read EEPROM
4263 *****************/
4264 /* Read the EEPROM */
4265 err = iwl_eeprom_init(priv);
4266 if (err) {
4267 IWL_ERROR("Unable to init EEPROM\n");
4268 goto out_iounmap;
4269 }
4270 err = iwl_eeprom_check_version(priv);
4271 if (err)
4272 goto out_iounmap;
4273
4274 /* extract MAC Address */
4275 iwl_eeprom_get_mac(priv, priv->mac_addr);
4276 IWL_DEBUG_INFO("MAC address: %s\n", print_mac(mac, priv->mac_addr));
4277 SET_IEEE80211_PERM_ADDR(priv->hw, priv->mac_addr);
4278
4279 /************************
4280 * 5. Setup HW constants
4281 ************************/
4282 if (iwl_set_hw_params(priv)) {
4283 IWL_ERROR("failed to set hw parameters\n");
4284 goto out_free_eeprom;
4285 }
4286
4287 /*******************
4288 * 6. Setup priv
4289 *******************/
4290
4291 err = iwl_init_drv(priv);
4292 if (err)
4293 goto out_free_eeprom;
4294 /* At this point both hw and priv are initialized. */
4295
4296 /**********************************
4297 * 7. Initialize module parameters
4298 **********************************/
4299
4300 /* Disable radio (SW RF KILL) via parameter when loading driver */
4301 if (priv->cfg->mod_params->disable) {
4302 set_bit(STATUS_RF_KILL_SW, &priv->status);
4303 IWL_DEBUG_INFO("Radio disabled.\n");
4304 }
4305
4306 /********************
4307 * 8. Setup services
4308 ********************/
4309 spin_lock_irqsave(&priv->lock, flags);
4310 iwl4965_disable_interrupts(priv);
4311 spin_unlock_irqrestore(&priv->lock, flags);
4312
4313 err = sysfs_create_group(&pdev->dev.kobj, &iwl4965_attribute_group);
4314 if (err) {
4315 IWL_ERROR("failed to create sysfs device attributes\n");
4316 goto out_uninit_drv;
4317 }
4318
4319
4320 iwl_setup_deferred_work(priv);
4321 iwl_setup_rx_handlers(priv);
4322
4323 /********************
4324 * 9. Conclude
4325 ********************/
4326 pci_save_state(pdev);
4327 pci_disable_device(pdev);
4328
4329 /**********************************
4330 * 10. Setup and register mac80211
4331 **********************************/
4332
4333 err = iwl_setup_mac(priv);
4334 if (err)
4335 goto out_remove_sysfs;
4336
4337 err = iwl_dbgfs_register(priv, DRV_NAME);
4338 if (err)
4339 IWL_ERROR("failed to create debugfs files\n");
4340
4341 err = iwl_rfkill_init(priv);
4342 if (err)
4343 IWL_ERROR("Unable to initialize RFKILL system. "
4344 "Ignoring error: %d\n", err);
4345 iwl_power_initialize(priv);
4346 return 0;
4347
4348 out_remove_sysfs:
4349 sysfs_remove_group(&pdev->dev.kobj, &iwl4965_attribute_group);
4350 out_uninit_drv:
4351 iwl_uninit_drv(priv);
4352 out_free_eeprom:
4353 iwl_eeprom_free(priv);
4354 out_iounmap:
4355 pci_iounmap(pdev, priv->hw_base);
4356 out_pci_release_regions:
4357 pci_release_regions(pdev);
4358 pci_set_drvdata(pdev, NULL);
4359 out_pci_disable_device:
4360 pci_disable_device(pdev);
4361 out_ieee80211_free_hw:
4362 ieee80211_free_hw(priv->hw);
4363 out:
4364 return err;
4365 }
4366
4367 static void __devexit iwl4965_pci_remove(struct pci_dev *pdev)
4368 {
4369 struct iwl_priv *priv = pci_get_drvdata(pdev);
4370 unsigned long flags;
4371
4372 if (!priv)
4373 return;
4374
4375 IWL_DEBUG_INFO("*** UNLOAD DRIVER ***\n");
4376
4377 iwl_dbgfs_unregister(priv);
4378 sysfs_remove_group(&pdev->dev.kobj, &iwl4965_attribute_group);
4379
4380 if (priv->mac80211_registered) {
4381 ieee80211_unregister_hw(priv->hw);
4382 priv->mac80211_registered = 0;
4383 }
4384
4385 set_bit(STATUS_EXIT_PENDING, &priv->status);
4386
4387 iwl4965_down(priv);
4388
4389 /* make sure we flush any pending irq or
4390 * tasklet for the driver
4391 */
4392 spin_lock_irqsave(&priv->lock, flags);
4393 iwl4965_disable_interrupts(priv);
4394 spin_unlock_irqrestore(&priv->lock, flags);
4395
4396 iwl_synchronize_irq(priv);
4397
4398 iwl_rfkill_unregister(priv);
4399 iwl4965_dealloc_ucode_pci(priv);
4400
4401 if (priv->rxq.bd)
4402 iwl_rx_queue_free(priv, &priv->rxq);
4403 iwl_hw_txq_ctx_free(priv);
4404
4405 iwl_clear_stations_table(priv);
4406 iwl_eeprom_free(priv);
4407
4408
4409 /*netif_stop_queue(dev); */
4410 flush_workqueue(priv->workqueue);
4411
4412 /* ieee80211_unregister_hw calls iwl4965_mac_stop, which flushes
4413 * priv->workqueue... so we can't take down the workqueue
4414 * until now... */
4415 destroy_workqueue(priv->workqueue);
4416 priv->workqueue = NULL;
4417
4418 pci_iounmap(pdev, priv->hw_base);
4419 pci_release_regions(pdev);
4420 pci_disable_device(pdev);
4421 pci_set_drvdata(pdev, NULL);
4422
4423 iwl_uninit_drv(priv);
4424
4425 if (priv->ibss_beacon)
4426 dev_kfree_skb(priv->ibss_beacon);
4427
4428 ieee80211_free_hw(priv->hw);
4429 }
4430
4431 #ifdef CONFIG_PM
4432
4433 static int iwl4965_pci_suspend(struct pci_dev *pdev, pm_message_t state)
4434 {
4435 struct iwl_priv *priv = pci_get_drvdata(pdev);
4436
4437 if (priv->is_open) {
4438 set_bit(STATUS_IN_SUSPEND, &priv->status);
4439 iwl4965_mac_stop(priv->hw);
4440 priv->is_open = 1;
4441 }
4442
4443 pci_set_power_state(pdev, PCI_D3hot);
4444
4445 return 0;
4446 }
4447
4448 static int iwl4965_pci_resume(struct pci_dev *pdev)
4449 {
4450 struct iwl_priv *priv = pci_get_drvdata(pdev);
4451
4452 pci_set_power_state(pdev, PCI_D0);
4453
4454 if (priv->is_open)
4455 iwl4965_mac_start(priv->hw);
4456
4457 clear_bit(STATUS_IN_SUSPEND, &priv->status);
4458 return 0;
4459 }
4460
4461 #endif /* CONFIG_PM */
4462
4463 /*****************************************************************************
4464 *
4465 * driver and module entry point
4466 *
4467 *****************************************************************************/
4468
4469 /* Hardware specific file defines the PCI IDs table for that hardware module */
4470 static struct pci_device_id iwl_hw_card_ids[] = {
4471 #ifdef CONFIG_IWL4965
4472 {IWL_PCI_DEVICE(0x4229, PCI_ANY_ID, iwl4965_agn_cfg)},
4473 {IWL_PCI_DEVICE(0x4230, PCI_ANY_ID, iwl4965_agn_cfg)},
4474 #endif /* CONFIG_IWL4965 */
4475 #ifdef CONFIG_IWL5000
4476 {IWL_PCI_DEVICE(0x4232, 0x1205, iwl5100_bg_cfg)},
4477 {IWL_PCI_DEVICE(0x4232, 0x1305, iwl5100_bg_cfg)},
4478 {IWL_PCI_DEVICE(0x4232, 0x1206, iwl5100_abg_cfg)},
4479 {IWL_PCI_DEVICE(0x4232, 0x1306, iwl5100_abg_cfg)},
4480 {IWL_PCI_DEVICE(0x4232, 0x1326, iwl5100_abg_cfg)},
4481 {IWL_PCI_DEVICE(0x4237, 0x1216, iwl5100_abg_cfg)},
4482 {IWL_PCI_DEVICE(0x4232, PCI_ANY_ID, iwl5100_agn_cfg)},
4483 {IWL_PCI_DEVICE(0x4235, PCI_ANY_ID, iwl5300_agn_cfg)},
4484 {IWL_PCI_DEVICE(0x4236, PCI_ANY_ID, iwl5300_agn_cfg)},
4485 {IWL_PCI_DEVICE(0x4237, PCI_ANY_ID, iwl5100_agn_cfg)},
4486 {IWL_PCI_DEVICE(0x423A, PCI_ANY_ID, iwl5350_agn_cfg)},
4487 #endif /* CONFIG_IWL5000 */
4488 {0}
4489 };
4490 MODULE_DEVICE_TABLE(pci, iwl_hw_card_ids);
4491
4492 static struct pci_driver iwl_driver = {
4493 .name = DRV_NAME,
4494 .id_table = iwl_hw_card_ids,
4495 .probe = iwl4965_pci_probe,
4496 .remove = __devexit_p(iwl4965_pci_remove),
4497 #ifdef CONFIG_PM
4498 .suspend = iwl4965_pci_suspend,
4499 .resume = iwl4965_pci_resume,
4500 #endif
4501 };
4502
4503 static int __init iwl4965_init(void)
4504 {
4505
4506 int ret;
4507 printk(KERN_INFO DRV_NAME ": " DRV_DESCRIPTION ", " DRV_VERSION "\n");
4508 printk(KERN_INFO DRV_NAME ": " DRV_COPYRIGHT "\n");
4509
4510 ret = iwlagn_rate_control_register();
4511 if (ret) {
4512 IWL_ERROR("Unable to register rate control algorithm: %d\n", ret);
4513 return ret;
4514 }
4515
4516 ret = pci_register_driver(&iwl_driver);
4517 if (ret) {
4518 IWL_ERROR("Unable to initialize PCI module\n");
4519 goto error_register;
4520 }
4521
4522 return ret;
4523
4524 error_register:
4525 iwlagn_rate_control_unregister();
4526 return ret;
4527 }
4528
4529 static void __exit iwl4965_exit(void)
4530 {
4531 pci_unregister_driver(&iwl_driver);
4532 iwlagn_rate_control_unregister();
4533 }
4534
4535 module_exit(iwl4965_exit);
4536 module_init(iwl4965_init);
Linux 2.6 libata-dev (mirror)