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iwlwifi: don't switch to SGI if not supported by AP
[deliverable/linux.git] / drivers / net / wireless / iwlwifi / iwl4965-base.c
1 /******************************************************************************
2 *
3 * Copyright(c) 2003 - 2008 Intel Corporation. All rights reserved.
4 *
5 * Portions of this file are derived from the ipw3945 project, as well
6 * as portions of the ieee80211 subsystem header files.
7 *
8 * This program is free software; you can redistribute it and/or modify it
9 * under the terms of version 2 of the GNU General Public License as
10 * published by the Free Software Foundation.
11 *
12 * This program is distributed in the hope that it will be useful, but WITHOUT
13 * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
14 * FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License for
15 * more details.
16 *
17 * You should have received a copy of the GNU General Public License along with
18 * this program; if not, write to the Free Software Foundation, Inc.,
19 * 51 Franklin Street, Fifth Floor, Boston, MA 02110, USA
20 *
21 * The full GNU General Public License is included in this distribution in the
22 * file called LICENSE.
23 *
24 * Contact Information:
25 * James P. Ketrenos <ipw2100-admin@linux.intel.com>
26 * Intel Corporation, 5200 N.E. Elam Young Parkway, Hillsboro, OR 97124-6497
27 *
28 *****************************************************************************/
29
30 #include <linux/kernel.h>
31 #include <linux/module.h>
32 #include <linux/version.h>
33 #include <linux/init.h>
34 #include <linux/pci.h>
35 #include <linux/dma-mapping.h>
36 #include <linux/delay.h>
37 #include <linux/skbuff.h>
38 #include <linux/netdevice.h>
39 #include <linux/wireless.h>
40 #include <linux/firmware.h>
41 #include <linux/etherdevice.h>
42 #include <linux/if_arp.h>
43
44 #include <net/mac80211.h>
45
46 #include <asm/div64.h>
47
48 #include "iwl-eeprom.h"
49 #include "iwl-dev.h"
50 #include "iwl-core.h"
51 #include "iwl-io.h"
52 #include "iwl-helpers.h"
53 #include "iwl-sta.h"
54 #include "iwl-calib.h"
55
56
57 /******************************************************************************
58 *
59 * module boiler plate
60 *
61 ******************************************************************************/
62
63 /*
64 * module name, copyright, version, etc.
65 * NOTE: DRV_NAME is defined in iwlwifi.h for use by iwl-debug.h and printk
66 */
67
68 #define DRV_DESCRIPTION "Intel(R) Wireless WiFi Link 4965AGN driver for Linux"
69
70 #ifdef CONFIG_IWLWIFI_DEBUG
71 #define VD "d"
72 #else
73 #define VD
74 #endif
75
76 #ifdef CONFIG_IWL4965_SPECTRUM_MEASUREMENT
77 #define VS "s"
78 #else
79 #define VS
80 #endif
81
82 #define DRV_VERSION IWLWIFI_VERSION VD VS
83
84
85 MODULE_DESCRIPTION(DRV_DESCRIPTION);
86 MODULE_VERSION(DRV_VERSION);
87 MODULE_AUTHOR(DRV_COPYRIGHT);
88 MODULE_LICENSE("GPL");
89
90 static const struct ieee80211_supported_band *iwl_get_hw_mode(
91 struct iwl_priv *priv, enum ieee80211_band band)
92 {
93 return priv->hw->wiphy->bands[band];
94 }
95
96 static int iwl4965_is_empty_essid(const char *essid, int essid_len)
97 {
98 /* Single white space is for Linksys APs */
99 if (essid_len == 1 && essid[0] == ' ')
100 return 1;
101
102 /* Otherwise, if the entire essid is 0, we assume it is hidden */
103 while (essid_len) {
104 essid_len--;
105 if (essid[essid_len] != '\0')
106 return 0;
107 }
108
109 return 1;
110 }
111
112 static const char *iwl4965_escape_essid(const char *essid, u8 essid_len)
113 {
114 static char escaped[IW_ESSID_MAX_SIZE * 2 + 1];
115 const char *s = essid;
116 char *d = escaped;
117
118 if (iwl4965_is_empty_essid(essid, essid_len)) {
119 memcpy(escaped, "<hidden>", sizeof("<hidden>"));
120 return escaped;
121 }
122
123 essid_len = min(essid_len, (u8) IW_ESSID_MAX_SIZE);
124 while (essid_len--) {
125 if (*s == '\0') {
126 *d++ = '\\';
127 *d++ = '0';
128 s++;
129 } else
130 *d++ = *s++;
131 }
132 *d = '\0';
133 return escaped;
134 }
135
136 /*************** STATION TABLE MANAGEMENT ****
137 * mac80211 should be examined to determine if sta_info is duplicating
138 * the functionality provided here
139 */
140
141 /**************************************************************/
142
143 #if 0 /* temporary disable till we add real remove station */
144 /**
145 * iwl4965_remove_station - Remove driver's knowledge of station.
146 *
147 * NOTE: This does not remove station from device's station table.
148 */
149 static u8 iwl4965_remove_station(struct iwl_priv *priv, const u8 *addr, int is_ap)
150 {
151 int index = IWL_INVALID_STATION;
152 int i;
153 unsigned long flags;
154
155 spin_lock_irqsave(&priv->sta_lock, flags);
156
157 if (is_ap)
158 index = IWL_AP_ID;
159 else if (is_broadcast_ether_addr(addr))
160 index = priv->hw_params.bcast_sta_id;
161 else
162 for (i = IWL_STA_ID; i < priv->hw_params.max_stations; i++)
163 if (priv->stations[i].used &&
164 !compare_ether_addr(priv->stations[i].sta.sta.addr,
165 addr)) {
166 index = i;
167 break;
168 }
169
170 if (unlikely(index == IWL_INVALID_STATION))
171 goto out;
172
173 if (priv->stations[index].used) {
174 priv->stations[index].used = 0;
175 priv->num_stations--;
176 }
177
178 BUG_ON(priv->num_stations < 0);
179
180 out:
181 spin_unlock_irqrestore(&priv->sta_lock, flags);
182 return 0;
183 }
184 #endif
185
186
187
188 static void iwl4965_set_rxon_hwcrypto(struct iwl_priv *priv, int hw_decrypt)
189 {
190 struct iwl_rxon_cmd *rxon = &priv->staging_rxon;
191
192 if (hw_decrypt)
193 rxon->filter_flags &= ~RXON_FILTER_DIS_DECRYPT_MSK;
194 else
195 rxon->filter_flags |= RXON_FILTER_DIS_DECRYPT_MSK;
196
197 }
198
199 /**
200 * iwl4965_check_rxon_cmd - validate RXON structure is valid
201 *
202 * NOTE: This is really only useful during development and can eventually
203 * be #ifdef'd out once the driver is stable and folks aren't actively
204 * making changes
205 */
206 static int iwl4965_check_rxon_cmd(struct iwl_rxon_cmd *rxon)
207 {
208 int error = 0;
209 int counter = 1;
210
211 if (rxon->flags & RXON_FLG_BAND_24G_MSK) {
212 error |= le32_to_cpu(rxon->flags &
213 (RXON_FLG_TGJ_NARROW_BAND_MSK |
214 RXON_FLG_RADAR_DETECT_MSK));
215 if (error)
216 IWL_WARNING("check 24G fields %d | %d\n",
217 counter++, error);
218 } else {
219 error |= (rxon->flags & RXON_FLG_SHORT_SLOT_MSK) ?
220 0 : le32_to_cpu(RXON_FLG_SHORT_SLOT_MSK);
221 if (error)
222 IWL_WARNING("check 52 fields %d | %d\n",
223 counter++, error);
224 error |= le32_to_cpu(rxon->flags & RXON_FLG_CCK_MSK);
225 if (error)
226 IWL_WARNING("check 52 CCK %d | %d\n",
227 counter++, error);
228 }
229 error |= (rxon->node_addr[0] | rxon->bssid_addr[0]) & 0x1;
230 if (error)
231 IWL_WARNING("check mac addr %d | %d\n", counter++, error);
232
233 /* make sure basic rates 6Mbps and 1Mbps are supported */
234 error |= (((rxon->ofdm_basic_rates & IWL_RATE_6M_MASK) == 0) &&
235 ((rxon->cck_basic_rates & IWL_RATE_1M_MASK) == 0));
236 if (error)
237 IWL_WARNING("check basic rate %d | %d\n", counter++, error);
238
239 error |= (le16_to_cpu(rxon->assoc_id) > 2007);
240 if (error)
241 IWL_WARNING("check assoc id %d | %d\n", counter++, error);
242
243 error |= ((rxon->flags & (RXON_FLG_CCK_MSK | RXON_FLG_SHORT_SLOT_MSK))
244 == (RXON_FLG_CCK_MSK | RXON_FLG_SHORT_SLOT_MSK));
245 if (error)
246 IWL_WARNING("check CCK and short slot %d | %d\n",
247 counter++, error);
248
249 error |= ((rxon->flags & (RXON_FLG_CCK_MSK | RXON_FLG_AUTO_DETECT_MSK))
250 == (RXON_FLG_CCK_MSK | RXON_FLG_AUTO_DETECT_MSK));
251 if (error)
252 IWL_WARNING("check CCK & auto detect %d | %d\n",
253 counter++, error);
254
255 error |= ((rxon->flags & (RXON_FLG_AUTO_DETECT_MSK |
256 RXON_FLG_TGG_PROTECT_MSK)) == RXON_FLG_TGG_PROTECT_MSK);
257 if (error)
258 IWL_WARNING("check TGG and auto detect %d | %d\n",
259 counter++, error);
260
261 if (error)
262 IWL_WARNING("Tuning to channel %d\n",
263 le16_to_cpu(rxon->channel));
264
265 if (error) {
266 IWL_ERROR("Not a valid iwl4965_rxon_assoc_cmd field values\n");
267 return -1;
268 }
269 return 0;
270 }
271
272 /**
273 * iwl4965_full_rxon_required - check if full RXON (vs RXON_ASSOC) cmd is needed
274 * @priv: staging_rxon is compared to active_rxon
275 *
276 * If the RXON structure is changing enough to require a new tune,
277 * or is clearing the RXON_FILTER_ASSOC_MSK, then return 1 to indicate that
278 * a new tune (full RXON command, rather than RXON_ASSOC cmd) is required.
279 */
280 static int iwl4965_full_rxon_required(struct iwl_priv *priv)
281 {
282
283 /* These items are only settable from the full RXON command */
284 if (!(priv->active_rxon.filter_flags & RXON_FILTER_ASSOC_MSK) ||
285 compare_ether_addr(priv->staging_rxon.bssid_addr,
286 priv->active_rxon.bssid_addr) ||
287 compare_ether_addr(priv->staging_rxon.node_addr,
288 priv->active_rxon.node_addr) ||
289 compare_ether_addr(priv->staging_rxon.wlap_bssid_addr,
290 priv->active_rxon.wlap_bssid_addr) ||
291 (priv->staging_rxon.dev_type != priv->active_rxon.dev_type) ||
292 (priv->staging_rxon.channel != priv->active_rxon.channel) ||
293 (priv->staging_rxon.air_propagation !=
294 priv->active_rxon.air_propagation) ||
295 (priv->staging_rxon.ofdm_ht_single_stream_basic_rates !=
296 priv->active_rxon.ofdm_ht_single_stream_basic_rates) ||
297 (priv->staging_rxon.ofdm_ht_dual_stream_basic_rates !=
298 priv->active_rxon.ofdm_ht_dual_stream_basic_rates) ||
299 (priv->staging_rxon.rx_chain != priv->active_rxon.rx_chain) ||
300 (priv->staging_rxon.assoc_id != priv->active_rxon.assoc_id))
301 return 1;
302
303 /* flags, filter_flags, ofdm_basic_rates, and cck_basic_rates can
304 * be updated with the RXON_ASSOC command -- however only some
305 * flag transitions are allowed using RXON_ASSOC */
306
307 /* Check if we are not switching bands */
308 if ((priv->staging_rxon.flags & RXON_FLG_BAND_24G_MSK) !=
309 (priv->active_rxon.flags & RXON_FLG_BAND_24G_MSK))
310 return 1;
311
312 /* Check if we are switching association toggle */
313 if ((priv->staging_rxon.filter_flags & RXON_FILTER_ASSOC_MSK) !=
314 (priv->active_rxon.filter_flags & RXON_FILTER_ASSOC_MSK))
315 return 1;
316
317 return 0;
318 }
319
320 /**
321 * iwl4965_commit_rxon - commit staging_rxon to hardware
322 *
323 * The RXON command in staging_rxon is committed to the hardware and
324 * the active_rxon structure is updated with the new data. This
325 * function correctly transitions out of the RXON_ASSOC_MSK state if
326 * a HW tune is required based on the RXON structure changes.
327 */
328 static int iwl4965_commit_rxon(struct iwl_priv *priv)
329 {
330 /* cast away the const for active_rxon in this function */
331 struct iwl_rxon_cmd *active_rxon = (void *)&priv->active_rxon;
332 DECLARE_MAC_BUF(mac);
333 int rc = 0;
334
335 if (!iwl_is_alive(priv))
336 return -1;
337
338 /* always get timestamp with Rx frame */
339 priv->staging_rxon.flags |= RXON_FLG_TSF2HOST_MSK;
340
341 rc = iwl4965_check_rxon_cmd(&priv->staging_rxon);
342 if (rc) {
343 IWL_ERROR("Invalid RXON configuration. Not committing.\n");
344 return -EINVAL;
345 }
346
347 /* If we don't need to send a full RXON, we can use
348 * iwl4965_rxon_assoc_cmd which is used to reconfigure filter
349 * and other flags for the current radio configuration. */
350 if (!iwl4965_full_rxon_required(priv)) {
351 rc = iwl_send_rxon_assoc(priv);
352 if (rc) {
353 IWL_ERROR("Error setting RXON_ASSOC "
354 "configuration (%d).\n", rc);
355 return rc;
356 }
357
358 memcpy(active_rxon, &priv->staging_rxon, sizeof(*active_rxon));
359
360 return 0;
361 }
362
363 /* station table will be cleared */
364 priv->assoc_station_added = 0;
365
366 /* If we are currently associated and the new config requires
367 * an RXON_ASSOC and the new config wants the associated mask enabled,
368 * we must clear the associated from the active configuration
369 * before we apply the new config */
370 if (iwl_is_associated(priv) &&
371 (priv->staging_rxon.filter_flags & RXON_FILTER_ASSOC_MSK)) {
372 IWL_DEBUG_INFO("Toggling associated bit on current RXON\n");
373 active_rxon->filter_flags &= ~RXON_FILTER_ASSOC_MSK;
374
375 rc = iwl_send_cmd_pdu(priv, REPLY_RXON,
376 sizeof(struct iwl_rxon_cmd),
377 &priv->active_rxon);
378
379 /* If the mask clearing failed then we set
380 * active_rxon back to what it was previously */
381 if (rc) {
382 active_rxon->filter_flags |= RXON_FILTER_ASSOC_MSK;
383 IWL_ERROR("Error clearing ASSOC_MSK on current "
384 "configuration (%d).\n", rc);
385 return rc;
386 }
387 }
388
389 IWL_DEBUG_INFO("Sending RXON\n"
390 "* with%s RXON_FILTER_ASSOC_MSK\n"
391 "* channel = %d\n"
392 "* bssid = %s\n",
393 ((priv->staging_rxon.filter_flags &
394 RXON_FILTER_ASSOC_MSK) ? "" : "out"),
395 le16_to_cpu(priv->staging_rxon.channel),
396 print_mac(mac, priv->staging_rxon.bssid_addr));
397
398 iwl4965_set_rxon_hwcrypto(priv, !priv->hw_params.sw_crypto);
399 /* Apply the new configuration */
400 rc = iwl_send_cmd_pdu(priv, REPLY_RXON,
401 sizeof(struct iwl_rxon_cmd), &priv->staging_rxon);
402 if (rc) {
403 IWL_ERROR("Error setting new configuration (%d).\n", rc);
404 return rc;
405 }
406
407 iwlcore_clear_stations_table(priv);
408
409 if (!priv->error_recovering)
410 priv->start_calib = 0;
411
412 iwl_init_sensitivity(priv);
413
414 memcpy(active_rxon, &priv->staging_rxon, sizeof(*active_rxon));
415
416 /* If we issue a new RXON command which required a tune then we must
417 * send a new TXPOWER command or we won't be able to Tx any frames */
418 rc = iwl4965_hw_reg_send_txpower(priv);
419 if (rc) {
420 IWL_ERROR("Error setting Tx power (%d).\n", rc);
421 return rc;
422 }
423
424 /* Add the broadcast address so we can send broadcast frames */
425 if (iwl_rxon_add_station(priv, iwl_bcast_addr, 0) ==
426 IWL_INVALID_STATION) {
427 IWL_ERROR("Error adding BROADCAST address for transmit.\n");
428 return -EIO;
429 }
430
431 /* If we have set the ASSOC_MSK and we are in BSS mode then
432 * add the IWL_AP_ID to the station rate table */
433 if (iwl_is_associated(priv) &&
434 (priv->iw_mode == IEEE80211_IF_TYPE_STA)) {
435 if (iwl_rxon_add_station(priv, priv->active_rxon.bssid_addr, 1)
436 == IWL_INVALID_STATION) {
437 IWL_ERROR("Error adding AP address for transmit.\n");
438 return -EIO;
439 }
440 priv->assoc_station_added = 1;
441 if (priv->default_wep_key &&
442 iwl_send_static_wepkey_cmd(priv, 0))
443 IWL_ERROR("Could not send WEP static key.\n");
444 }
445
446 return 0;
447 }
448
449 void iwl4965_update_chain_flags(struct iwl_priv *priv)
450 {
451
452 iwl_set_rxon_chain(priv);
453 iwl4965_commit_rxon(priv);
454 }
455
456 static int iwl4965_send_bt_config(struct iwl_priv *priv)
457 {
458 struct iwl4965_bt_cmd bt_cmd = {
459 .flags = 3,
460 .lead_time = 0xAA,
461 .max_kill = 1,
462 .kill_ack_mask = 0,
463 .kill_cts_mask = 0,
464 };
465
466 return iwl_send_cmd_pdu(priv, REPLY_BT_CONFIG,
467 sizeof(struct iwl4965_bt_cmd), &bt_cmd);
468 }
469
470 static int iwl4965_send_scan_abort(struct iwl_priv *priv)
471 {
472 int ret = 0;
473 struct iwl_rx_packet *res;
474 struct iwl_host_cmd cmd = {
475 .id = REPLY_SCAN_ABORT_CMD,
476 .meta.flags = CMD_WANT_SKB,
477 };
478
479 /* If there isn't a scan actively going on in the hardware
480 * then we are in between scan bands and not actually
481 * actively scanning, so don't send the abort command */
482 if (!test_bit(STATUS_SCAN_HW, &priv->status)) {
483 clear_bit(STATUS_SCAN_ABORTING, &priv->status);
484 return 0;
485 }
486
487 ret = iwl_send_cmd_sync(priv, &cmd);
488 if (ret) {
489 clear_bit(STATUS_SCAN_ABORTING, &priv->status);
490 return ret;
491 }
492
493 res = (struct iwl_rx_packet *)cmd.meta.u.skb->data;
494 if (res->u.status != CAN_ABORT_STATUS) {
495 /* The scan abort will return 1 for success or
496 * 2 for "failure". A failure condition can be
497 * due to simply not being in an active scan which
498 * can occur if we send the scan abort before we
499 * the microcode has notified us that a scan is
500 * completed. */
501 IWL_DEBUG_INFO("SCAN_ABORT returned %d.\n", res->u.status);
502 clear_bit(STATUS_SCAN_ABORTING, &priv->status);
503 clear_bit(STATUS_SCAN_HW, &priv->status);
504 }
505
506 dev_kfree_skb_any(cmd.meta.u.skb);
507
508 return ret;
509 }
510
511 /*
512 * CARD_STATE_CMD
513 *
514 * Use: Sets the device's internal card state to enable, disable, or halt
515 *
516 * When in the 'enable' state the card operates as normal.
517 * When in the 'disable' state, the card enters into a low power mode.
518 * When in the 'halt' state, the card is shut down and must be fully
519 * restarted to come back on.
520 */
521 static int iwl4965_send_card_state(struct iwl_priv *priv, u32 flags, u8 meta_flag)
522 {
523 struct iwl_host_cmd cmd = {
524 .id = REPLY_CARD_STATE_CMD,
525 .len = sizeof(u32),
526 .data = &flags,
527 .meta.flags = meta_flag,
528 };
529
530 return iwl_send_cmd(priv, &cmd);
531 }
532
533 static void iwl_clear_free_frames(struct iwl_priv *priv)
534 {
535 struct list_head *element;
536
537 IWL_DEBUG_INFO("%d frames on pre-allocated heap on clear.\n",
538 priv->frames_count);
539
540 while (!list_empty(&priv->free_frames)) {
541 element = priv->free_frames.next;
542 list_del(element);
543 kfree(list_entry(element, struct iwl_frame, list));
544 priv->frames_count--;
545 }
546
547 if (priv->frames_count) {
548 IWL_WARNING("%d frames still in use. Did we lose one?\n",
549 priv->frames_count);
550 priv->frames_count = 0;
551 }
552 }
553
554 static struct iwl_frame *iwl_get_free_frame(struct iwl_priv *priv)
555 {
556 struct iwl_frame *frame;
557 struct list_head *element;
558 if (list_empty(&priv->free_frames)) {
559 frame = kzalloc(sizeof(*frame), GFP_KERNEL);
560 if (!frame) {
561 IWL_ERROR("Could not allocate frame!\n");
562 return NULL;
563 }
564
565 priv->frames_count++;
566 return frame;
567 }
568
569 element = priv->free_frames.next;
570 list_del(element);
571 return list_entry(element, struct iwl_frame, list);
572 }
573
574 static void iwl_free_frame(struct iwl_priv *priv, struct iwl_frame *frame)
575 {
576 memset(frame, 0, sizeof(*frame));
577 list_add(&frame->list, &priv->free_frames);
578 }
579
580 unsigned int iwl4965_fill_beacon_frame(struct iwl_priv *priv,
581 struct ieee80211_hdr *hdr,
582 const u8 *dest, int left)
583 {
584
585 if (!iwl_is_associated(priv) || !priv->ibss_beacon ||
586 ((priv->iw_mode != IEEE80211_IF_TYPE_IBSS) &&
587 (priv->iw_mode != IEEE80211_IF_TYPE_AP)))
588 return 0;
589
590 if (priv->ibss_beacon->len > left)
591 return 0;
592
593 memcpy(hdr, priv->ibss_beacon->data, priv->ibss_beacon->len);
594
595 return priv->ibss_beacon->len;
596 }
597
598 static u8 iwl4965_rate_get_lowest_plcp(struct iwl_priv *priv)
599 {
600 int i;
601 int rate_mask;
602
603 /* Set rate mask*/
604 if (priv->staging_rxon.flags & RXON_FLG_BAND_24G_MSK)
605 rate_mask = priv->active_rate_basic & 0xF;
606 else
607 rate_mask = priv->active_rate_basic & 0xFF0;
608
609 /* Find lowest valid rate */
610 for (i = IWL_RATE_1M_INDEX; i != IWL_RATE_INVALID;
611 i = iwl_rates[i].next_ieee) {
612 if (rate_mask & (1 << i))
613 return iwl_rates[i].plcp;
614 }
615
616 /* No valid rate was found. Assign the lowest one */
617 if (priv->staging_rxon.flags & RXON_FLG_BAND_24G_MSK)
618 return IWL_RATE_1M_PLCP;
619 else
620 return IWL_RATE_6M_PLCP;
621 }
622
623 static int iwl4965_send_beacon_cmd(struct iwl_priv *priv)
624 {
625 struct iwl_frame *frame;
626 unsigned int frame_size;
627 int rc;
628 u8 rate;
629
630 frame = iwl_get_free_frame(priv);
631
632 if (!frame) {
633 IWL_ERROR("Could not obtain free frame buffer for beacon "
634 "command.\n");
635 return -ENOMEM;
636 }
637
638 rate = iwl4965_rate_get_lowest_plcp(priv);
639
640 frame_size = iwl4965_hw_get_beacon_cmd(priv, frame, rate);
641
642 rc = iwl_send_cmd_pdu(priv, REPLY_TX_BEACON, frame_size,
643 &frame->u.cmd[0]);
644
645 iwl_free_frame(priv, frame);
646
647 return rc;
648 }
649
650 /******************************************************************************
651 *
652 * Misc. internal state and helper functions
653 *
654 ******************************************************************************/
655
656 /**
657 * iwl4965_supported_rate_to_ie - fill in the supported rate in IE field
658 *
659 * return : set the bit for each supported rate insert in ie
660 */
661 static u16 iwl4965_supported_rate_to_ie(u8 *ie, u16 supported_rate,
662 u16 basic_rate, int *left)
663 {
664 u16 ret_rates = 0, bit;
665 int i;
666 u8 *cnt = ie;
667 u8 *rates = ie + 1;
668
669 for (bit = 1, i = 0; i < IWL_RATE_COUNT; i++, bit <<= 1) {
670 if (bit & supported_rate) {
671 ret_rates |= bit;
672 rates[*cnt] = iwl_rates[i].ieee |
673 ((bit & basic_rate) ? 0x80 : 0x00);
674 (*cnt)++;
675 (*left)--;
676 if ((*left <= 0) ||
677 (*cnt >= IWL_SUPPORTED_RATES_IE_LEN))
678 break;
679 }
680 }
681
682 return ret_rates;
683 }
684
685 #ifdef CONFIG_IWL4965_HT
686 static void iwl4965_ht_conf(struct iwl_priv *priv,
687 struct ieee80211_bss_conf *bss_conf)
688 {
689 struct ieee80211_ht_info *ht_conf = bss_conf->ht_conf;
690 struct ieee80211_ht_bss_info *ht_bss_conf = bss_conf->ht_bss_conf;
691 struct iwl_ht_info *iwl_conf = &priv->current_ht_config;
692
693 IWL_DEBUG_MAC80211("enter: \n");
694
695 iwl_conf->is_ht = bss_conf->assoc_ht;
696
697 if (!iwl_conf->is_ht)
698 return;
699
700 priv->ps_mode = (u8)((ht_conf->cap & IEEE80211_HT_CAP_MIMO_PS) >> 2);
701
702 if (ht_conf->cap & IEEE80211_HT_CAP_SGI_20)
703 iwl_conf->sgf |= HT_SHORT_GI_20MHZ;
704 if (ht_conf->cap & IEEE80211_HT_CAP_SGI_40)
705 iwl_conf->sgf |= HT_SHORT_GI_40MHZ;
706
707 iwl_conf->is_green_field = !!(ht_conf->cap & IEEE80211_HT_CAP_GRN_FLD);
708 iwl_conf->max_amsdu_size =
709 !!(ht_conf->cap & IEEE80211_HT_CAP_MAX_AMSDU);
710
711 iwl_conf->supported_chan_width =
712 !!(ht_conf->cap & IEEE80211_HT_CAP_SUP_WIDTH);
713 iwl_conf->extension_chan_offset =
714 ht_bss_conf->bss_cap & IEEE80211_HT_IE_CHA_SEC_OFFSET;
715 /* If no above or below channel supplied disable FAT channel */
716 if (iwl_conf->extension_chan_offset != IWL_EXT_CHANNEL_OFFSET_ABOVE &&
717 iwl_conf->extension_chan_offset != IWL_EXT_CHANNEL_OFFSET_BELOW)
718 iwl_conf->supported_chan_width = 0;
719
720 iwl_conf->tx_mimo_ps_mode =
721 (u8)((ht_conf->cap & IEEE80211_HT_CAP_MIMO_PS) >> 2);
722 memcpy(iwl_conf->supp_mcs_set, ht_conf->supp_mcs_set, 16);
723
724 iwl_conf->control_channel = ht_bss_conf->primary_channel;
725 iwl_conf->tx_chan_width =
726 !!(ht_bss_conf->bss_cap & IEEE80211_HT_IE_CHA_WIDTH);
727 iwl_conf->ht_protection =
728 ht_bss_conf->bss_op_mode & IEEE80211_HT_IE_HT_PROTECTION;
729 iwl_conf->non_GF_STA_present =
730 !!(ht_bss_conf->bss_op_mode & IEEE80211_HT_IE_NON_GF_STA_PRSNT);
731
732 IWL_DEBUG_MAC80211("control channel %d\n", iwl_conf->control_channel);
733 IWL_DEBUG_MAC80211("leave\n");
734 }
735
736 static void iwl_ht_cap_to_ie(const struct ieee80211_supported_band *sband,
737 u8 *pos, int *left)
738 {
739 struct ieee80211_ht_cap *ht_cap;
740
741 if (!sband || !sband->ht_info.ht_supported)
742 return;
743
744 if (*left < sizeof(struct ieee80211_ht_cap))
745 return;
746
747 *pos++ = sizeof(struct ieee80211_ht_cap);
748 ht_cap = (struct ieee80211_ht_cap *) pos;
749
750 ht_cap->cap_info = cpu_to_le16(sband->ht_info.cap);
751 memcpy(ht_cap->supp_mcs_set, sband->ht_info.supp_mcs_set, 16);
752 ht_cap->ampdu_params_info =
753 (sband->ht_info.ampdu_factor & IEEE80211_HT_CAP_AMPDU_FACTOR) |
754 ((sband->ht_info.ampdu_density << 2) &
755 IEEE80211_HT_CAP_AMPDU_DENSITY);
756 *left -= sizeof(struct ieee80211_ht_cap);
757 }
758 #else
759 static inline void iwl4965_ht_conf(struct iwl_priv *priv,
760 struct ieee80211_bss_conf *bss_conf)
761 {
762 }
763 static void iwl_ht_cap_to_ie(const struct ieee80211_supported_band *sband,
764 u8 *pos, int *left)
765 {
766 }
767 #endif
768
769
770 /**
771 * iwl4965_fill_probe_req - fill in all required fields and IE for probe request
772 */
773 static u16 iwl4965_fill_probe_req(struct iwl_priv *priv,
774 enum ieee80211_band band,
775 struct ieee80211_mgmt *frame,
776 int left, int is_direct)
777 {
778 int len = 0;
779 u8 *pos = NULL;
780 u16 active_rates, ret_rates, cck_rates, active_rate_basic;
781 const struct ieee80211_supported_band *sband =
782 iwl_get_hw_mode(priv, band);
783
784 /* Make sure there is enough space for the probe request,
785 * two mandatory IEs and the data */
786 left -= 24;
787 if (left < 0)
788 return 0;
789 len += 24;
790
791 frame->frame_control = cpu_to_le16(IEEE80211_STYPE_PROBE_REQ);
792 memcpy(frame->da, iwl_bcast_addr, ETH_ALEN);
793 memcpy(frame->sa, priv->mac_addr, ETH_ALEN);
794 memcpy(frame->bssid, iwl_bcast_addr, ETH_ALEN);
795 frame->seq_ctrl = 0;
796
797 /* fill in our indirect SSID IE */
798 /* ...next IE... */
799
800 left -= 2;
801 if (left < 0)
802 return 0;
803 len += 2;
804 pos = &(frame->u.probe_req.variable[0]);
805 *pos++ = WLAN_EID_SSID;
806 *pos++ = 0;
807
808 /* fill in our direct SSID IE... */
809 if (is_direct) {
810 /* ...next IE... */
811 left -= 2 + priv->essid_len;
812 if (left < 0)
813 return 0;
814 /* ... fill it in... */
815 *pos++ = WLAN_EID_SSID;
816 *pos++ = priv->essid_len;
817 memcpy(pos, priv->essid, priv->essid_len);
818 pos += priv->essid_len;
819 len += 2 + priv->essid_len;
820 }
821
822 /* fill in supported rate */
823 /* ...next IE... */
824 left -= 2;
825 if (left < 0)
826 return 0;
827
828 /* ... fill it in... */
829 *pos++ = WLAN_EID_SUPP_RATES;
830 *pos = 0;
831
832 /* exclude 60M rate */
833 active_rates = priv->rates_mask;
834 active_rates &= ~IWL_RATE_60M_MASK;
835
836 active_rate_basic = active_rates & IWL_BASIC_RATES_MASK;
837
838 cck_rates = IWL_CCK_RATES_MASK & active_rates;
839 ret_rates = iwl4965_supported_rate_to_ie(pos, cck_rates,
840 active_rate_basic, &left);
841 active_rates &= ~ret_rates;
842
843 ret_rates = iwl4965_supported_rate_to_ie(pos, active_rates,
844 active_rate_basic, &left);
845 active_rates &= ~ret_rates;
846
847 len += 2 + *pos;
848 pos += (*pos) + 1;
849 if (active_rates == 0)
850 goto fill_end;
851
852 /* fill in supported extended rate */
853 /* ...next IE... */
854 left -= 2;
855 if (left < 0)
856 return 0;
857 /* ... fill it in... */
858 *pos++ = WLAN_EID_EXT_SUPP_RATES;
859 *pos = 0;
860 iwl4965_supported_rate_to_ie(pos, active_rates,
861 active_rate_basic, &left);
862 if (*pos > 0)
863 len += 2 + *pos;
864
865 fill_end:
866 /* fill in HT IE */
867 left -= 2;
868 if (left < 0)
869 return 0;
870
871 *pos++ = WLAN_EID_HT_CAPABILITY;
872 *pos = 0;
873
874 iwl_ht_cap_to_ie(sband, pos, &left);
875
876 if (*pos > 0)
877 len += 2 + *pos;
878 return (u16)len;
879 }
880
881 /*
882 * QoS support
883 */
884 static int iwl4965_send_qos_params_command(struct iwl_priv *priv,
885 struct iwl4965_qosparam_cmd *qos)
886 {
887
888 return iwl_send_cmd_pdu(priv, REPLY_QOS_PARAM,
889 sizeof(struct iwl4965_qosparam_cmd), qos);
890 }
891
892 static void iwl4965_activate_qos(struct iwl_priv *priv, u8 force)
893 {
894 unsigned long flags;
895
896 if (test_bit(STATUS_EXIT_PENDING, &priv->status))
897 return;
898
899 if (!priv->qos_data.qos_enable)
900 return;
901
902 spin_lock_irqsave(&priv->lock, flags);
903 priv->qos_data.def_qos_parm.qos_flags = 0;
904
905 if (priv->qos_data.qos_cap.q_AP.queue_request &&
906 !priv->qos_data.qos_cap.q_AP.txop_request)
907 priv->qos_data.def_qos_parm.qos_flags |=
908 QOS_PARAM_FLG_TXOP_TYPE_MSK;
909 if (priv->qos_data.qos_active)
910 priv->qos_data.def_qos_parm.qos_flags |=
911 QOS_PARAM_FLG_UPDATE_EDCA_MSK;
912
913 #ifdef CONFIG_IWL4965_HT
914 if (priv->current_ht_config.is_ht)
915 priv->qos_data.def_qos_parm.qos_flags |= QOS_PARAM_FLG_TGN_MSK;
916 #endif /* CONFIG_IWL4965_HT */
917
918 spin_unlock_irqrestore(&priv->lock, flags);
919
920 if (force || iwl_is_associated(priv)) {
921 IWL_DEBUG_QOS("send QoS cmd with Qos active=%d FLAGS=0x%X\n",
922 priv->qos_data.qos_active,
923 priv->qos_data.def_qos_parm.qos_flags);
924
925 iwl4965_send_qos_params_command(priv,
926 &(priv->qos_data.def_qos_parm));
927 }
928 }
929
930 int iwl4965_is_network_packet(struct iwl_priv *priv, struct ieee80211_hdr *header)
931 {
932 /* Filter incoming packets to determine if they are targeted toward
933 * this network, discarding packets coming from ourselves */
934 switch (priv->iw_mode) {
935 case IEEE80211_IF_TYPE_IBSS: /* Header: Dest. | Source | BSSID */
936 /* packets from our adapter are dropped (echo) */
937 if (!compare_ether_addr(header->addr2, priv->mac_addr))
938 return 0;
939 /* {broad,multi}cast packets to our IBSS go through */
940 if (is_multicast_ether_addr(header->addr1))
941 return !compare_ether_addr(header->addr3, priv->bssid);
942 /* packets to our adapter go through */
943 return !compare_ether_addr(header->addr1, priv->mac_addr);
944 case IEEE80211_IF_TYPE_STA: /* Header: Dest. | AP{BSSID} | Source */
945 /* packets from our adapter are dropped (echo) */
946 if (!compare_ether_addr(header->addr3, priv->mac_addr))
947 return 0;
948 /* {broad,multi}cast packets to our BSS go through */
949 if (is_multicast_ether_addr(header->addr1))
950 return !compare_ether_addr(header->addr2, priv->bssid);
951 /* packets to our adapter go through */
952 return !compare_ether_addr(header->addr1, priv->mac_addr);
953 default:
954 break;
955 }
956
957 return 1;
958 }
959
960 #define TX_STATUS_ENTRY(x) case TX_STATUS_FAIL_ ## x: return #x
961
962 static const char *iwl4965_get_tx_fail_reason(u32 status)
963 {
964 switch (status & TX_STATUS_MSK) {
965 case TX_STATUS_SUCCESS:
966 return "SUCCESS";
967 TX_STATUS_ENTRY(SHORT_LIMIT);
968 TX_STATUS_ENTRY(LONG_LIMIT);
969 TX_STATUS_ENTRY(FIFO_UNDERRUN);
970 TX_STATUS_ENTRY(MGMNT_ABORT);
971 TX_STATUS_ENTRY(NEXT_FRAG);
972 TX_STATUS_ENTRY(LIFE_EXPIRE);
973 TX_STATUS_ENTRY(DEST_PS);
974 TX_STATUS_ENTRY(ABORTED);
975 TX_STATUS_ENTRY(BT_RETRY);
976 TX_STATUS_ENTRY(STA_INVALID);
977 TX_STATUS_ENTRY(FRAG_DROPPED);
978 TX_STATUS_ENTRY(TID_DISABLE);
979 TX_STATUS_ENTRY(FRAME_FLUSHED);
980 TX_STATUS_ENTRY(INSUFFICIENT_CF_POLL);
981 TX_STATUS_ENTRY(TX_LOCKED);
982 TX_STATUS_ENTRY(NO_BEACON_ON_RADAR);
983 }
984
985 return "UNKNOWN";
986 }
987
988 /**
989 * iwl4965_scan_cancel - Cancel any currently executing HW scan
990 *
991 * NOTE: priv->mutex is not required before calling this function
992 */
993 static int iwl4965_scan_cancel(struct iwl_priv *priv)
994 {
995 if (!test_bit(STATUS_SCAN_HW, &priv->status)) {
996 clear_bit(STATUS_SCANNING, &priv->status);
997 return 0;
998 }
999
1000 if (test_bit(STATUS_SCANNING, &priv->status)) {
1001 if (!test_bit(STATUS_SCAN_ABORTING, &priv->status)) {
1002 IWL_DEBUG_SCAN("Queuing scan abort.\n");
1003 set_bit(STATUS_SCAN_ABORTING, &priv->status);
1004 queue_work(priv->workqueue, &priv->abort_scan);
1005
1006 } else
1007 IWL_DEBUG_SCAN("Scan abort already in progress.\n");
1008
1009 return test_bit(STATUS_SCANNING, &priv->status);
1010 }
1011
1012 return 0;
1013 }
1014
1015 /**
1016 * iwl4965_scan_cancel_timeout - Cancel any currently executing HW scan
1017 * @ms: amount of time to wait (in milliseconds) for scan to abort
1018 *
1019 * NOTE: priv->mutex must be held before calling this function
1020 */
1021 static int iwl4965_scan_cancel_timeout(struct iwl_priv *priv, unsigned long ms)
1022 {
1023 unsigned long now = jiffies;
1024 int ret;
1025
1026 ret = iwl4965_scan_cancel(priv);
1027 if (ret && ms) {
1028 mutex_unlock(&priv->mutex);
1029 while (!time_after(jiffies, now + msecs_to_jiffies(ms)) &&
1030 test_bit(STATUS_SCANNING, &priv->status))
1031 msleep(1);
1032 mutex_lock(&priv->mutex);
1033
1034 return test_bit(STATUS_SCANNING, &priv->status);
1035 }
1036
1037 return ret;
1038 }
1039
1040 static void iwl4965_sequence_reset(struct iwl_priv *priv)
1041 {
1042 /* Reset ieee stats */
1043
1044 /* We don't reset the net_device_stats (ieee->stats) on
1045 * re-association */
1046
1047 priv->last_seq_num = -1;
1048 priv->last_frag_num = -1;
1049 priv->last_packet_time = 0;
1050
1051 iwl4965_scan_cancel(priv);
1052 }
1053
1054 #define MAX_UCODE_BEACON_INTERVAL 4096
1055 #define INTEL_CONN_LISTEN_INTERVAL __constant_cpu_to_le16(0xA)
1056
1057 static __le16 iwl4965_adjust_beacon_interval(u16 beacon_val)
1058 {
1059 u16 new_val = 0;
1060 u16 beacon_factor = 0;
1061
1062 beacon_factor =
1063 (beacon_val + MAX_UCODE_BEACON_INTERVAL)
1064 / MAX_UCODE_BEACON_INTERVAL;
1065 new_val = beacon_val / beacon_factor;
1066
1067 return cpu_to_le16(new_val);
1068 }
1069
1070 static void iwl4965_setup_rxon_timing(struct iwl_priv *priv)
1071 {
1072 u64 interval_tm_unit;
1073 u64 tsf, result;
1074 unsigned long flags;
1075 struct ieee80211_conf *conf = NULL;
1076 u16 beacon_int = 0;
1077
1078 conf = ieee80211_get_hw_conf(priv->hw);
1079
1080 spin_lock_irqsave(&priv->lock, flags);
1081 priv->rxon_timing.timestamp.dw[1] = cpu_to_le32(priv->timestamp >> 32);
1082 priv->rxon_timing.timestamp.dw[0] =
1083 cpu_to_le32(priv->timestamp & 0xFFFFFFFF);
1084
1085 priv->rxon_timing.listen_interval = INTEL_CONN_LISTEN_INTERVAL;
1086
1087 tsf = priv->timestamp;
1088
1089 beacon_int = priv->beacon_int;
1090 spin_unlock_irqrestore(&priv->lock, flags);
1091
1092 if (priv->iw_mode == IEEE80211_IF_TYPE_STA) {
1093 if (beacon_int == 0) {
1094 priv->rxon_timing.beacon_interval = cpu_to_le16(100);
1095 priv->rxon_timing.beacon_init_val = cpu_to_le32(102400);
1096 } else {
1097 priv->rxon_timing.beacon_interval =
1098 cpu_to_le16(beacon_int);
1099 priv->rxon_timing.beacon_interval =
1100 iwl4965_adjust_beacon_interval(
1101 le16_to_cpu(priv->rxon_timing.beacon_interval));
1102 }
1103
1104 priv->rxon_timing.atim_window = 0;
1105 } else {
1106 priv->rxon_timing.beacon_interval =
1107 iwl4965_adjust_beacon_interval(conf->beacon_int);
1108 /* TODO: we need to get atim_window from upper stack
1109 * for now we set to 0 */
1110 priv->rxon_timing.atim_window = 0;
1111 }
1112
1113 interval_tm_unit =
1114 (le16_to_cpu(priv->rxon_timing.beacon_interval) * 1024);
1115 result = do_div(tsf, interval_tm_unit);
1116 priv->rxon_timing.beacon_init_val =
1117 cpu_to_le32((u32) ((u64) interval_tm_unit - result));
1118
1119 IWL_DEBUG_ASSOC
1120 ("beacon interval %d beacon timer %d beacon tim %d\n",
1121 le16_to_cpu(priv->rxon_timing.beacon_interval),
1122 le32_to_cpu(priv->rxon_timing.beacon_init_val),
1123 le16_to_cpu(priv->rxon_timing.atim_window));
1124 }
1125
1126 static int iwl4965_scan_initiate(struct iwl_priv *priv)
1127 {
1128 if (priv->iw_mode == IEEE80211_IF_TYPE_AP) {
1129 IWL_ERROR("APs don't scan.\n");
1130 return 0;
1131 }
1132
1133 if (!iwl_is_ready_rf(priv)) {
1134 IWL_DEBUG_SCAN("Aborting scan due to not ready.\n");
1135 return -EIO;
1136 }
1137
1138 if (test_bit(STATUS_SCANNING, &priv->status)) {
1139 IWL_DEBUG_SCAN("Scan already in progress.\n");
1140 return -EAGAIN;
1141 }
1142
1143 if (test_bit(STATUS_SCAN_ABORTING, &priv->status)) {
1144 IWL_DEBUG_SCAN("Scan request while abort pending. "
1145 "Queuing.\n");
1146 return -EAGAIN;
1147 }
1148
1149 IWL_DEBUG_INFO("Starting scan...\n");
1150 priv->scan_bands = 2;
1151 set_bit(STATUS_SCANNING, &priv->status);
1152 priv->scan_start = jiffies;
1153 priv->scan_pass_start = priv->scan_start;
1154
1155 queue_work(priv->workqueue, &priv->request_scan);
1156
1157 return 0;
1158 }
1159
1160
1161 static void iwl4965_set_flags_for_phymode(struct iwl_priv *priv,
1162 enum ieee80211_band band)
1163 {
1164 if (band == IEEE80211_BAND_5GHZ) {
1165 priv->staging_rxon.flags &=
1166 ~(RXON_FLG_BAND_24G_MSK | RXON_FLG_AUTO_DETECT_MSK
1167 | RXON_FLG_CCK_MSK);
1168 priv->staging_rxon.flags |= RXON_FLG_SHORT_SLOT_MSK;
1169 } else {
1170 /* Copied from iwl4965_post_associate() */
1171 if (priv->assoc_capability & WLAN_CAPABILITY_SHORT_SLOT_TIME)
1172 priv->staging_rxon.flags |= RXON_FLG_SHORT_SLOT_MSK;
1173 else
1174 priv->staging_rxon.flags &= ~RXON_FLG_SHORT_SLOT_MSK;
1175
1176 if (priv->iw_mode == IEEE80211_IF_TYPE_IBSS)
1177 priv->staging_rxon.flags &= ~RXON_FLG_SHORT_SLOT_MSK;
1178
1179 priv->staging_rxon.flags |= RXON_FLG_BAND_24G_MSK;
1180 priv->staging_rxon.flags |= RXON_FLG_AUTO_DETECT_MSK;
1181 priv->staging_rxon.flags &= ~RXON_FLG_CCK_MSK;
1182 }
1183 }
1184
1185 /*
1186 * initialize rxon structure with default values from eeprom
1187 */
1188 static void iwl4965_connection_init_rx_config(struct iwl_priv *priv)
1189 {
1190 const struct iwl_channel_info *ch_info;
1191
1192 memset(&priv->staging_rxon, 0, sizeof(priv->staging_rxon));
1193
1194 switch (priv->iw_mode) {
1195 case IEEE80211_IF_TYPE_AP:
1196 priv->staging_rxon.dev_type = RXON_DEV_TYPE_AP;
1197 break;
1198
1199 case IEEE80211_IF_TYPE_STA:
1200 priv->staging_rxon.dev_type = RXON_DEV_TYPE_ESS;
1201 priv->staging_rxon.filter_flags = RXON_FILTER_ACCEPT_GRP_MSK;
1202 break;
1203
1204 case IEEE80211_IF_TYPE_IBSS:
1205 priv->staging_rxon.dev_type = RXON_DEV_TYPE_IBSS;
1206 priv->staging_rxon.flags = RXON_FLG_SHORT_PREAMBLE_MSK;
1207 priv->staging_rxon.filter_flags = RXON_FILTER_BCON_AWARE_MSK |
1208 RXON_FILTER_ACCEPT_GRP_MSK;
1209 break;
1210
1211 case IEEE80211_IF_TYPE_MNTR:
1212 priv->staging_rxon.dev_type = RXON_DEV_TYPE_SNIFFER;
1213 priv->staging_rxon.filter_flags = RXON_FILTER_PROMISC_MSK |
1214 RXON_FILTER_CTL2HOST_MSK | RXON_FILTER_ACCEPT_GRP_MSK;
1215 break;
1216 default:
1217 IWL_ERROR("Unsupported interface type %d\n", priv->iw_mode);
1218 break;
1219 }
1220
1221 #if 0
1222 /* TODO: Figure out when short_preamble would be set and cache from
1223 * that */
1224 if (!hw_to_local(priv->hw)->short_preamble)
1225 priv->staging_rxon.flags &= ~RXON_FLG_SHORT_PREAMBLE_MSK;
1226 else
1227 priv->staging_rxon.flags |= RXON_FLG_SHORT_PREAMBLE_MSK;
1228 #endif
1229
1230 ch_info = iwl_get_channel_info(priv, priv->band,
1231 le16_to_cpu(priv->staging_rxon.channel));
1232
1233 if (!ch_info)
1234 ch_info = &priv->channel_info[0];
1235
1236 /*
1237 * in some case A channels are all non IBSS
1238 * in this case force B/G channel
1239 */
1240 if ((priv->iw_mode == IEEE80211_IF_TYPE_IBSS) &&
1241 !(is_channel_ibss(ch_info)))
1242 ch_info = &priv->channel_info[0];
1243
1244 priv->staging_rxon.channel = cpu_to_le16(ch_info->channel);
1245 priv->band = ch_info->band;
1246
1247 iwl4965_set_flags_for_phymode(priv, priv->band);
1248
1249 priv->staging_rxon.ofdm_basic_rates =
1250 (IWL_OFDM_RATES_MASK >> IWL_FIRST_OFDM_RATE) & 0xFF;
1251 priv->staging_rxon.cck_basic_rates =
1252 (IWL_CCK_RATES_MASK >> IWL_FIRST_CCK_RATE) & 0xF;
1253
1254 priv->staging_rxon.flags &= ~(RXON_FLG_CHANNEL_MODE_MIXED_MSK |
1255 RXON_FLG_CHANNEL_MODE_PURE_40_MSK);
1256 memcpy(priv->staging_rxon.node_addr, priv->mac_addr, ETH_ALEN);
1257 memcpy(priv->staging_rxon.wlap_bssid_addr, priv->mac_addr, ETH_ALEN);
1258 priv->staging_rxon.ofdm_ht_single_stream_basic_rates = 0xff;
1259 priv->staging_rxon.ofdm_ht_dual_stream_basic_rates = 0xff;
1260 iwl_set_rxon_chain(priv);
1261 }
1262
1263 static int iwl4965_set_mode(struct iwl_priv *priv, int mode)
1264 {
1265 if (mode == IEEE80211_IF_TYPE_IBSS) {
1266 const struct iwl_channel_info *ch_info;
1267
1268 ch_info = iwl_get_channel_info(priv,
1269 priv->band,
1270 le16_to_cpu(priv->staging_rxon.channel));
1271
1272 if (!ch_info || !is_channel_ibss(ch_info)) {
1273 IWL_ERROR("channel %d not IBSS channel\n",
1274 le16_to_cpu(priv->staging_rxon.channel));
1275 return -EINVAL;
1276 }
1277 }
1278
1279 priv->iw_mode = mode;
1280
1281 iwl4965_connection_init_rx_config(priv);
1282 memcpy(priv->staging_rxon.node_addr, priv->mac_addr, ETH_ALEN);
1283
1284 iwlcore_clear_stations_table(priv);
1285
1286 /* dont commit rxon if rf-kill is on*/
1287 if (!iwl_is_ready_rf(priv))
1288 return -EAGAIN;
1289
1290 cancel_delayed_work(&priv->scan_check);
1291 if (iwl4965_scan_cancel_timeout(priv, 100)) {
1292 IWL_WARNING("Aborted scan still in progress after 100ms\n");
1293 IWL_DEBUG_MAC80211("leaving - scan abort failed.\n");
1294 return -EAGAIN;
1295 }
1296
1297 iwl4965_commit_rxon(priv);
1298
1299 return 0;
1300 }
1301
1302 static void iwl4965_set_rate(struct iwl_priv *priv)
1303 {
1304 const struct ieee80211_supported_band *hw = NULL;
1305 struct ieee80211_rate *rate;
1306 int i;
1307
1308 hw = iwl_get_hw_mode(priv, priv->band);
1309 if (!hw) {
1310 IWL_ERROR("Failed to set rate: unable to get hw mode\n");
1311 return;
1312 }
1313
1314 priv->active_rate = 0;
1315 priv->active_rate_basic = 0;
1316
1317 for (i = 0; i < hw->n_bitrates; i++) {
1318 rate = &(hw->bitrates[i]);
1319 if (rate->hw_value < IWL_RATE_COUNT)
1320 priv->active_rate |= (1 << rate->hw_value);
1321 }
1322
1323 IWL_DEBUG_RATE("Set active_rate = %0x, active_rate_basic = %0x\n",
1324 priv->active_rate, priv->active_rate_basic);
1325
1326 /*
1327 * If a basic rate is configured, then use it (adding IWL_RATE_1M_MASK)
1328 * otherwise set it to the default of all CCK rates and 6, 12, 24 for
1329 * OFDM
1330 */
1331 if (priv->active_rate_basic & IWL_CCK_BASIC_RATES_MASK)
1332 priv->staging_rxon.cck_basic_rates =
1333 ((priv->active_rate_basic &
1334 IWL_CCK_RATES_MASK) >> IWL_FIRST_CCK_RATE) & 0xF;
1335 else
1336 priv->staging_rxon.cck_basic_rates =
1337 (IWL_CCK_BASIC_RATES_MASK >> IWL_FIRST_CCK_RATE) & 0xF;
1338
1339 if (priv->active_rate_basic & IWL_OFDM_BASIC_RATES_MASK)
1340 priv->staging_rxon.ofdm_basic_rates =
1341 ((priv->active_rate_basic &
1342 (IWL_OFDM_BASIC_RATES_MASK | IWL_RATE_6M_MASK)) >>
1343 IWL_FIRST_OFDM_RATE) & 0xFF;
1344 else
1345 priv->staging_rxon.ofdm_basic_rates =
1346 (IWL_OFDM_BASIC_RATES_MASK >> IWL_FIRST_OFDM_RATE) & 0xFF;
1347 }
1348
1349 void iwl4965_radio_kill_sw(struct iwl_priv *priv, int disable_radio)
1350 {
1351 unsigned long flags;
1352
1353 if (!!disable_radio == test_bit(STATUS_RF_KILL_SW, &priv->status))
1354 return;
1355
1356 IWL_DEBUG_RF_KILL("Manual SW RF KILL set to: RADIO %s\n",
1357 disable_radio ? "OFF" : "ON");
1358
1359 if (disable_radio) {
1360 iwl4965_scan_cancel(priv);
1361 /* FIXME: This is a workaround for AP */
1362 if (priv->iw_mode != IEEE80211_IF_TYPE_AP) {
1363 spin_lock_irqsave(&priv->lock, flags);
1364 iwl_write32(priv, CSR_UCODE_DRV_GP1_SET,
1365 CSR_UCODE_SW_BIT_RFKILL);
1366 spin_unlock_irqrestore(&priv->lock, flags);
1367 /* call the host command only if no hw rf-kill set */
1368 if (!test_bit(STATUS_RF_KILL_HW, &priv->status) &&
1369 iwl_is_ready(priv))
1370 iwl4965_send_card_state(priv,
1371 CARD_STATE_CMD_DISABLE,
1372 0);
1373 set_bit(STATUS_RF_KILL_SW, &priv->status);
1374
1375 /* make sure mac80211 stop sending Tx frame */
1376 if (priv->mac80211_registered)
1377 ieee80211_stop_queues(priv->hw);
1378 }
1379 return;
1380 }
1381
1382 spin_lock_irqsave(&priv->lock, flags);
1383 iwl_write32(priv, CSR_UCODE_DRV_GP1_CLR, CSR_UCODE_SW_BIT_RFKILL);
1384
1385 clear_bit(STATUS_RF_KILL_SW, &priv->status);
1386 spin_unlock_irqrestore(&priv->lock, flags);
1387
1388 /* wake up ucode */
1389 msleep(10);
1390
1391 spin_lock_irqsave(&priv->lock, flags);
1392 iwl_read32(priv, CSR_UCODE_DRV_GP1);
1393 if (!iwl_grab_nic_access(priv))
1394 iwl_release_nic_access(priv);
1395 spin_unlock_irqrestore(&priv->lock, flags);
1396
1397 if (test_bit(STATUS_RF_KILL_HW, &priv->status)) {
1398 IWL_DEBUG_RF_KILL("Can not turn radio back on - "
1399 "disabled by HW switch\n");
1400 return;
1401 }
1402
1403 queue_work(priv->workqueue, &priv->restart);
1404 return;
1405 }
1406
1407 #define IWL_PACKET_RETRY_TIME HZ
1408
1409 int iwl4965_is_duplicate_packet(struct iwl_priv *priv, struct ieee80211_hdr *header)
1410 {
1411 u16 sc = le16_to_cpu(header->seq_ctrl);
1412 u16 seq = (sc & IEEE80211_SCTL_SEQ) >> 4;
1413 u16 frag = sc & IEEE80211_SCTL_FRAG;
1414 u16 *last_seq, *last_frag;
1415 unsigned long *last_time;
1416
1417 switch (priv->iw_mode) {
1418 case IEEE80211_IF_TYPE_IBSS:{
1419 struct list_head *p;
1420 struct iwl4965_ibss_seq *entry = NULL;
1421 u8 *mac = header->addr2;
1422 int index = mac[5] & (IWL_IBSS_MAC_HASH_SIZE - 1);
1423
1424 __list_for_each(p, &priv->ibss_mac_hash[index]) {
1425 entry = list_entry(p, struct iwl4965_ibss_seq, list);
1426 if (!compare_ether_addr(entry->mac, mac))
1427 break;
1428 }
1429 if (p == &priv->ibss_mac_hash[index]) {
1430 entry = kzalloc(sizeof(*entry), GFP_ATOMIC);
1431 if (!entry) {
1432 IWL_ERROR("Cannot malloc new mac entry\n");
1433 return 0;
1434 }
1435 memcpy(entry->mac, mac, ETH_ALEN);
1436 entry->seq_num = seq;
1437 entry->frag_num = frag;
1438 entry->packet_time = jiffies;
1439 list_add(&entry->list, &priv->ibss_mac_hash[index]);
1440 return 0;
1441 }
1442 last_seq = &entry->seq_num;
1443 last_frag = &entry->frag_num;
1444 last_time = &entry->packet_time;
1445 break;
1446 }
1447 case IEEE80211_IF_TYPE_STA:
1448 last_seq = &priv->last_seq_num;
1449 last_frag = &priv->last_frag_num;
1450 last_time = &priv->last_packet_time;
1451 break;
1452 default:
1453 return 0;
1454 }
1455 if ((*last_seq == seq) &&
1456 time_after(*last_time + IWL_PACKET_RETRY_TIME, jiffies)) {
1457 if (*last_frag == frag)
1458 goto drop;
1459 if (*last_frag + 1 != frag)
1460 /* out-of-order fragment */
1461 goto drop;
1462 } else
1463 *last_seq = seq;
1464
1465 *last_frag = frag;
1466 *last_time = jiffies;
1467 return 0;
1468
1469 drop:
1470 return 1;
1471 }
1472
1473 #ifdef CONFIG_IWL4965_SPECTRUM_MEASUREMENT
1474
1475 #include "iwl-spectrum.h"
1476
1477 #define BEACON_TIME_MASK_LOW 0x00FFFFFF
1478 #define BEACON_TIME_MASK_HIGH 0xFF000000
1479 #define TIME_UNIT 1024
1480
1481 /*
1482 * extended beacon time format
1483 * time in usec will be changed into a 32-bit value in 8:24 format
1484 * the high 1 byte is the beacon counts
1485 * the lower 3 bytes is the time in usec within one beacon interval
1486 */
1487
1488 static u32 iwl4965_usecs_to_beacons(u32 usec, u32 beacon_interval)
1489 {
1490 u32 quot;
1491 u32 rem;
1492 u32 interval = beacon_interval * 1024;
1493
1494 if (!interval || !usec)
1495 return 0;
1496
1497 quot = (usec / interval) & (BEACON_TIME_MASK_HIGH >> 24);
1498 rem = (usec % interval) & BEACON_TIME_MASK_LOW;
1499
1500 return (quot << 24) + rem;
1501 }
1502
1503 /* base is usually what we get from ucode with each received frame,
1504 * the same as HW timer counter counting down
1505 */
1506
1507 static __le32 iwl4965_add_beacon_time(u32 base, u32 addon, u32 beacon_interval)
1508 {
1509 u32 base_low = base & BEACON_TIME_MASK_LOW;
1510 u32 addon_low = addon & BEACON_TIME_MASK_LOW;
1511 u32 interval = beacon_interval * TIME_UNIT;
1512 u32 res = (base & BEACON_TIME_MASK_HIGH) +
1513 (addon & BEACON_TIME_MASK_HIGH);
1514
1515 if (base_low > addon_low)
1516 res += base_low - addon_low;
1517 else if (base_low < addon_low) {
1518 res += interval + base_low - addon_low;
1519 res += (1 << 24);
1520 } else
1521 res += (1 << 24);
1522
1523 return cpu_to_le32(res);
1524 }
1525
1526 static int iwl4965_get_measurement(struct iwl_priv *priv,
1527 struct ieee80211_measurement_params *params,
1528 u8 type)
1529 {
1530 struct iwl4965_spectrum_cmd spectrum;
1531 struct iwl_rx_packet *res;
1532 struct iwl_host_cmd cmd = {
1533 .id = REPLY_SPECTRUM_MEASUREMENT_CMD,
1534 .data = (void *)&spectrum,
1535 .meta.flags = CMD_WANT_SKB,
1536 };
1537 u32 add_time = le64_to_cpu(params->start_time);
1538 int rc;
1539 int spectrum_resp_status;
1540 int duration = le16_to_cpu(params->duration);
1541
1542 if (iwl_is_associated(priv))
1543 add_time =
1544 iwl4965_usecs_to_beacons(
1545 le64_to_cpu(params->start_time) - priv->last_tsf,
1546 le16_to_cpu(priv->rxon_timing.beacon_interval));
1547
1548 memset(&spectrum, 0, sizeof(spectrum));
1549
1550 spectrum.channel_count = cpu_to_le16(1);
1551 spectrum.flags =
1552 RXON_FLG_TSF2HOST_MSK | RXON_FLG_ANT_A_MSK | RXON_FLG_DIS_DIV_MSK;
1553 spectrum.filter_flags = MEASUREMENT_FILTER_FLAG;
1554 cmd.len = sizeof(spectrum);
1555 spectrum.len = cpu_to_le16(cmd.len - sizeof(spectrum.len));
1556
1557 if (iwl_is_associated(priv))
1558 spectrum.start_time =
1559 iwl4965_add_beacon_time(priv->last_beacon_time,
1560 add_time,
1561 le16_to_cpu(priv->rxon_timing.beacon_interval));
1562 else
1563 spectrum.start_time = 0;
1564
1565 spectrum.channels[0].duration = cpu_to_le32(duration * TIME_UNIT);
1566 spectrum.channels[0].channel = params->channel;
1567 spectrum.channels[0].type = type;
1568 if (priv->active_rxon.flags & RXON_FLG_BAND_24G_MSK)
1569 spectrum.flags |= RXON_FLG_BAND_24G_MSK |
1570 RXON_FLG_AUTO_DETECT_MSK | RXON_FLG_TGG_PROTECT_MSK;
1571
1572 rc = iwl_send_cmd_sync(priv, &cmd);
1573 if (rc)
1574 return rc;
1575
1576 res = (struct iwl_rx_packet *)cmd.meta.u.skb->data;
1577 if (res->hdr.flags & IWL_CMD_FAILED_MSK) {
1578 IWL_ERROR("Bad return from REPLY_RX_ON_ASSOC command\n");
1579 rc = -EIO;
1580 }
1581
1582 spectrum_resp_status = le16_to_cpu(res->u.spectrum.status);
1583 switch (spectrum_resp_status) {
1584 case 0: /* Command will be handled */
1585 if (res->u.spectrum.id != 0xff) {
1586 IWL_DEBUG_INFO
1587 ("Replaced existing measurement: %d\n",
1588 res->u.spectrum.id);
1589 priv->measurement_status &= ~MEASUREMENT_READY;
1590 }
1591 priv->measurement_status |= MEASUREMENT_ACTIVE;
1592 rc = 0;
1593 break;
1594
1595 case 1: /* Command will not be handled */
1596 rc = -EAGAIN;
1597 break;
1598 }
1599
1600 dev_kfree_skb_any(cmd.meta.u.skb);
1601
1602 return rc;
1603 }
1604 #endif
1605
1606 static void iwl4965_txstatus_to_ieee(struct iwl_priv *priv,
1607 struct iwl_tx_info *tx_sta)
1608 {
1609
1610 tx_sta->status.ack_signal = 0;
1611 tx_sta->status.excessive_retries = 0;
1612
1613 if (in_interrupt())
1614 ieee80211_tx_status_irqsafe(priv->hw,
1615 tx_sta->skb[0], &(tx_sta->status));
1616 else
1617 ieee80211_tx_status(priv->hw,
1618 tx_sta->skb[0], &(tx_sta->status));
1619
1620 tx_sta->skb[0] = NULL;
1621 }
1622
1623 /**
1624 * iwl4965_tx_queue_reclaim - Reclaim Tx queue entries already Tx'd
1625 *
1626 * When FW advances 'R' index, all entries between old and new 'R' index
1627 * need to be reclaimed. As result, some free space forms. If there is
1628 * enough free space (> low mark), wake the stack that feeds us.
1629 */
1630 int iwl4965_tx_queue_reclaim(struct iwl_priv *priv, int txq_id, int index)
1631 {
1632 struct iwl_tx_queue *txq = &priv->txq[txq_id];
1633 struct iwl_queue *q = &txq->q;
1634 int nfreed = 0;
1635
1636 if ((index >= q->n_bd) || (iwl_queue_used(q, index) == 0)) {
1637 IWL_ERROR("Read index for DMA queue txq id (%d), index %d, "
1638 "is out of range [0-%d] %d %d.\n", txq_id,
1639 index, q->n_bd, q->write_ptr, q->read_ptr);
1640 return 0;
1641 }
1642
1643 for (index = iwl_queue_inc_wrap(index, q->n_bd);
1644 q->read_ptr != index;
1645 q->read_ptr = iwl_queue_inc_wrap(q->read_ptr, q->n_bd)) {
1646 if (txq_id != IWL_CMD_QUEUE_NUM) {
1647 iwl4965_txstatus_to_ieee(priv,
1648 &(txq->txb[txq->q.read_ptr]));
1649 iwl_hw_txq_free_tfd(priv, txq);
1650 } else if (nfreed > 1) {
1651 IWL_ERROR("HCMD skipped: index (%d) %d %d\n", index,
1652 q->write_ptr, q->read_ptr);
1653 queue_work(priv->workqueue, &priv->restart);
1654 }
1655 nfreed++;
1656 }
1657
1658 return nfreed;
1659 }
1660
1661 static int iwl4965_is_tx_success(u32 status)
1662 {
1663 status &= TX_STATUS_MSK;
1664 return (status == TX_STATUS_SUCCESS)
1665 || (status == TX_STATUS_DIRECT_DONE);
1666 }
1667
1668 /******************************************************************************
1669 *
1670 * Generic RX handler implementations
1671 *
1672 ******************************************************************************/
1673 #ifdef CONFIG_IWL4965_HT
1674
1675 static inline int iwl4965_get_ra_sta_id(struct iwl_priv *priv,
1676 struct ieee80211_hdr *hdr)
1677 {
1678 if (priv->iw_mode == IEEE80211_IF_TYPE_STA)
1679 return IWL_AP_ID;
1680 else {
1681 u8 *da = ieee80211_get_DA(hdr);
1682 return iwl_find_station(priv, da);
1683 }
1684 }
1685
1686 static struct ieee80211_hdr *iwl4965_tx_queue_get_hdr(
1687 struct iwl_priv *priv, int txq_id, int idx)
1688 {
1689 if (priv->txq[txq_id].txb[idx].skb[0])
1690 return (struct ieee80211_hdr *)priv->txq[txq_id].
1691 txb[idx].skb[0]->data;
1692 return NULL;
1693 }
1694
1695 static inline u32 iwl4965_get_scd_ssn(struct iwl4965_tx_resp *tx_resp)
1696 {
1697 __le32 *scd_ssn = (__le32 *)((u32 *)&tx_resp->status +
1698 tx_resp->frame_count);
1699 return le32_to_cpu(*scd_ssn) & MAX_SN;
1700
1701 }
1702
1703 /**
1704 * iwl4965_tx_status_reply_tx - Handle Tx rspnse for frames in aggregation queue
1705 */
1706 static int iwl4965_tx_status_reply_tx(struct iwl_priv *priv,
1707 struct iwl_ht_agg *agg,
1708 struct iwl4965_tx_resp_agg *tx_resp,
1709 u16 start_idx)
1710 {
1711 u16 status;
1712 struct agg_tx_status *frame_status = &tx_resp->status;
1713 struct ieee80211_tx_status *tx_status = NULL;
1714 struct ieee80211_hdr *hdr = NULL;
1715 int i, sh;
1716 int txq_id, idx;
1717 u16 seq;
1718
1719 if (agg->wait_for_ba)
1720 IWL_DEBUG_TX_REPLY("got tx response w/o block-ack\n");
1721
1722 agg->frame_count = tx_resp->frame_count;
1723 agg->start_idx = start_idx;
1724 agg->rate_n_flags = le32_to_cpu(tx_resp->rate_n_flags);
1725 agg->bitmap = 0;
1726
1727 /* # frames attempted by Tx command */
1728 if (agg->frame_count == 1) {
1729 /* Only one frame was attempted; no block-ack will arrive */
1730 status = le16_to_cpu(frame_status[0].status);
1731 seq = le16_to_cpu(frame_status[0].sequence);
1732 idx = SEQ_TO_INDEX(seq);
1733 txq_id = SEQ_TO_QUEUE(seq);
1734
1735 /* FIXME: code repetition */
1736 IWL_DEBUG_TX_REPLY("FrameCnt = %d, StartIdx=%d idx=%d\n",
1737 agg->frame_count, agg->start_idx, idx);
1738
1739 tx_status = &(priv->txq[txq_id].txb[idx].status);
1740 tx_status->retry_count = tx_resp->failure_frame;
1741 tx_status->control.flags &= ~IEEE80211_TXCTL_AMPDU;
1742 tx_status->flags = iwl4965_is_tx_success(status)?
1743 IEEE80211_TX_STATUS_ACK : 0;
1744 iwl4965_hwrate_to_tx_control(priv,
1745 le32_to_cpu(tx_resp->rate_n_flags),
1746 &tx_status->control);
1747 /* FIXME: code repetition end */
1748
1749 IWL_DEBUG_TX_REPLY("1 Frame 0x%x failure :%d\n",
1750 status & 0xff, tx_resp->failure_frame);
1751 IWL_DEBUG_TX_REPLY("Rate Info rate_n_flags=%x\n",
1752 iwl4965_hw_get_rate_n_flags(tx_resp->rate_n_flags));
1753
1754 agg->wait_for_ba = 0;
1755 } else {
1756 /* Two or more frames were attempted; expect block-ack */
1757 u64 bitmap = 0;
1758 int start = agg->start_idx;
1759
1760 /* Construct bit-map of pending frames within Tx window */
1761 for (i = 0; i < agg->frame_count; i++) {
1762 u16 sc;
1763 status = le16_to_cpu(frame_status[i].status);
1764 seq = le16_to_cpu(frame_status[i].sequence);
1765 idx = SEQ_TO_INDEX(seq);
1766 txq_id = SEQ_TO_QUEUE(seq);
1767
1768 if (status & (AGG_TX_STATE_FEW_BYTES_MSK |
1769 AGG_TX_STATE_ABORT_MSK))
1770 continue;
1771
1772 IWL_DEBUG_TX_REPLY("FrameCnt = %d, txq_id=%d idx=%d\n",
1773 agg->frame_count, txq_id, idx);
1774
1775 hdr = iwl4965_tx_queue_get_hdr(priv, txq_id, idx);
1776
1777 sc = le16_to_cpu(hdr->seq_ctrl);
1778 if (idx != (SEQ_TO_SN(sc) & 0xff)) {
1779 IWL_ERROR("BUG_ON idx doesn't match seq control"
1780 " idx=%d, seq_idx=%d, seq=%d\n",
1781 idx, SEQ_TO_SN(sc),
1782 hdr->seq_ctrl);
1783 return -1;
1784 }
1785
1786 IWL_DEBUG_TX_REPLY("AGG Frame i=%d idx %d seq=%d\n",
1787 i, idx, SEQ_TO_SN(sc));
1788
1789 sh = idx - start;
1790 if (sh > 64) {
1791 sh = (start - idx) + 0xff;
1792 bitmap = bitmap << sh;
1793 sh = 0;
1794 start = idx;
1795 } else if (sh < -64)
1796 sh = 0xff - (start - idx);
1797 else if (sh < 0) {
1798 sh = start - idx;
1799 start = idx;
1800 bitmap = bitmap << sh;
1801 sh = 0;
1802 }
1803 bitmap |= (1 << sh);
1804 IWL_DEBUG_TX_REPLY("start=%d bitmap=0x%x\n",
1805 start, (u32)(bitmap & 0xFFFFFFFF));
1806 }
1807
1808 agg->bitmap = bitmap;
1809 agg->start_idx = start;
1810 agg->rate_n_flags = le32_to_cpu(tx_resp->rate_n_flags);
1811 IWL_DEBUG_TX_REPLY("Frames %d start_idx=%d bitmap=0x%llx\n",
1812 agg->frame_count, agg->start_idx,
1813 (unsigned long long)agg->bitmap);
1814
1815 if (bitmap)
1816 agg->wait_for_ba = 1;
1817 }
1818 return 0;
1819 }
1820 #endif
1821
1822 /**
1823 * iwl4965_rx_reply_tx - Handle standard (non-aggregation) Tx response
1824 */
1825 static void iwl4965_rx_reply_tx(struct iwl_priv *priv,
1826 struct iwl_rx_mem_buffer *rxb)
1827 {
1828 struct iwl_rx_packet *pkt = (struct iwl_rx_packet *)rxb->skb->data;
1829 u16 sequence = le16_to_cpu(pkt->hdr.sequence);
1830 int txq_id = SEQ_TO_QUEUE(sequence);
1831 int index = SEQ_TO_INDEX(sequence);
1832 struct iwl_tx_queue *txq = &priv->txq[txq_id];
1833 struct ieee80211_tx_status *tx_status;
1834 struct iwl4965_tx_resp *tx_resp = (void *)&pkt->u.raw[0];
1835 u32 status = le32_to_cpu(tx_resp->status);
1836 #ifdef CONFIG_IWL4965_HT
1837 int tid = MAX_TID_COUNT, sta_id = IWL_INVALID_STATION;
1838 u16 fc;
1839 struct ieee80211_hdr *hdr;
1840 u8 *qc = NULL;
1841 #endif
1842
1843 if ((index >= txq->q.n_bd) || (iwl_queue_used(&txq->q, index) == 0)) {
1844 IWL_ERROR("Read index for DMA queue txq_id (%d) index %d "
1845 "is out of range [0-%d] %d %d\n", txq_id,
1846 index, txq->q.n_bd, txq->q.write_ptr,
1847 txq->q.read_ptr);
1848 return;
1849 }
1850
1851 #ifdef CONFIG_IWL4965_HT
1852 hdr = iwl4965_tx_queue_get_hdr(priv, txq_id, index);
1853 fc = le16_to_cpu(hdr->frame_control);
1854 if (ieee80211_is_qos_data(fc)) {
1855 qc = ieee80211_get_qos_ctrl(hdr, ieee80211_get_hdrlen(fc));
1856 tid = qc[0] & 0xf;
1857 }
1858
1859 sta_id = iwl4965_get_ra_sta_id(priv, hdr);
1860 if (txq->sched_retry && unlikely(sta_id == IWL_INVALID_STATION)) {
1861 IWL_ERROR("Station not known\n");
1862 return;
1863 }
1864
1865 if (txq->sched_retry) {
1866 const u32 scd_ssn = iwl4965_get_scd_ssn(tx_resp);
1867 struct iwl_ht_agg *agg = NULL;
1868
1869 if (!qc)
1870 return;
1871
1872 agg = &priv->stations[sta_id].tid[tid].agg;
1873
1874 iwl4965_tx_status_reply_tx(priv, agg,
1875 (struct iwl4965_tx_resp_agg *)tx_resp, index);
1876
1877 if ((tx_resp->frame_count == 1) &&
1878 !iwl4965_is_tx_success(status)) {
1879 /* TODO: send BAR */
1880 }
1881
1882 if (txq->q.read_ptr != (scd_ssn & 0xff)) {
1883 int freed, ampdu_q;
1884 index = iwl_queue_dec_wrap(scd_ssn & 0xff, txq->q.n_bd);
1885 IWL_DEBUG_TX_REPLY("Retry scheduler reclaim scd_ssn "
1886 "%d index %d\n", scd_ssn , index);
1887 freed = iwl4965_tx_queue_reclaim(priv, txq_id, index);
1888 priv->stations[sta_id].tid[tid].tfds_in_queue -= freed;
1889
1890 if (iwl_queue_space(&txq->q) > txq->q.low_mark &&
1891 txq_id >= 0 && priv->mac80211_registered &&
1892 agg->state != IWL_EMPTYING_HW_QUEUE_DELBA) {
1893 /* calculate mac80211 ampdu sw queue to wake */
1894 ampdu_q = txq_id - IWL_BACK_QUEUE_FIRST_ID +
1895 priv->hw->queues;
1896 if (agg->state == IWL_AGG_OFF)
1897 ieee80211_wake_queue(priv->hw, txq_id);
1898 else
1899 ieee80211_wake_queue(priv->hw, ampdu_q);
1900 }
1901 iwl4965_check_empty_hw_queue(priv, sta_id, tid, txq_id);
1902 }
1903 } else {
1904 #endif /* CONFIG_IWL4965_HT */
1905 tx_status = &(txq->txb[txq->q.read_ptr].status);
1906
1907 tx_status->retry_count = tx_resp->failure_frame;
1908 tx_status->flags =
1909 iwl4965_is_tx_success(status) ? IEEE80211_TX_STATUS_ACK : 0;
1910 iwl4965_hwrate_to_tx_control(priv, le32_to_cpu(tx_resp->rate_n_flags),
1911 &tx_status->control);
1912
1913 IWL_DEBUG_TX("Tx queue %d Status %s (0x%08x) rate_n_flags 0x%x "
1914 "retries %d\n", txq_id, iwl4965_get_tx_fail_reason(status),
1915 status, le32_to_cpu(tx_resp->rate_n_flags),
1916 tx_resp->failure_frame);
1917
1918 IWL_DEBUG_TX_REPLY("Tx queue reclaim %d\n", index);
1919 #ifdef CONFIG_IWL4965_HT
1920 if (index != -1) {
1921 int freed = iwl4965_tx_queue_reclaim(priv, txq_id, index);
1922 if (tid != MAX_TID_COUNT)
1923 priv->stations[sta_id].tid[tid].tfds_in_queue -= freed;
1924 if (iwl_queue_space(&txq->q) > txq->q.low_mark &&
1925 (txq_id >= 0) && priv->mac80211_registered)
1926 ieee80211_wake_queue(priv->hw, txq_id);
1927 if (tid != MAX_TID_COUNT)
1928 iwl4965_check_empty_hw_queue(priv, sta_id, tid, txq_id);
1929 }
1930 }
1931 #endif /* CONFIG_IWL4965_HT */
1932
1933 if (iwl_check_bits(status, TX_ABORT_REQUIRED_MSK))
1934 IWL_ERROR("TODO: Implement Tx ABORT REQUIRED!!!\n");
1935 }
1936
1937
1938 static void iwl4965_rx_reply_alive(struct iwl_priv *priv,
1939 struct iwl_rx_mem_buffer *rxb)
1940 {
1941 struct iwl_rx_packet *pkt = (struct iwl_rx_packet *)rxb->skb->data;
1942 struct iwl4965_alive_resp *palive;
1943 struct delayed_work *pwork;
1944
1945 palive = &pkt->u.alive_frame;
1946
1947 IWL_DEBUG_INFO("Alive ucode status 0x%08X revision "
1948 "0x%01X 0x%01X\n",
1949 palive->is_valid, palive->ver_type,
1950 palive->ver_subtype);
1951
1952 if (palive->ver_subtype == INITIALIZE_SUBTYPE) {
1953 IWL_DEBUG_INFO("Initialization Alive received.\n");
1954 memcpy(&priv->card_alive_init,
1955 &pkt->u.alive_frame,
1956 sizeof(struct iwl4965_init_alive_resp));
1957 pwork = &priv->init_alive_start;
1958 } else {
1959 IWL_DEBUG_INFO("Runtime Alive received.\n");
1960 memcpy(&priv->card_alive, &pkt->u.alive_frame,
1961 sizeof(struct iwl4965_alive_resp));
1962 pwork = &priv->alive_start;
1963 }
1964
1965 /* We delay the ALIVE response by 5ms to
1966 * give the HW RF Kill time to activate... */
1967 if (palive->is_valid == UCODE_VALID_OK)
1968 queue_delayed_work(priv->workqueue, pwork,
1969 msecs_to_jiffies(5));
1970 else
1971 IWL_WARNING("uCode did not respond OK.\n");
1972 }
1973
1974 static void iwl4965_rx_reply_add_sta(struct iwl_priv *priv,
1975 struct iwl_rx_mem_buffer *rxb)
1976 {
1977 struct iwl_rx_packet *pkt = (struct iwl_rx_packet *)rxb->skb->data;
1978
1979 IWL_DEBUG_RX("Received REPLY_ADD_STA: 0x%02X\n", pkt->u.status);
1980 return;
1981 }
1982
1983 static void iwl4965_rx_reply_error(struct iwl_priv *priv,
1984 struct iwl_rx_mem_buffer *rxb)
1985 {
1986 struct iwl_rx_packet *pkt = (struct iwl_rx_packet *)rxb->skb->data;
1987
1988 IWL_ERROR("Error Reply type 0x%08X cmd %s (0x%02X) "
1989 "seq 0x%04X ser 0x%08X\n",
1990 le32_to_cpu(pkt->u.err_resp.error_type),
1991 get_cmd_string(pkt->u.err_resp.cmd_id),
1992 pkt->u.err_resp.cmd_id,
1993 le16_to_cpu(pkt->u.err_resp.bad_cmd_seq_num),
1994 le32_to_cpu(pkt->u.err_resp.error_info));
1995 }
1996
1997 #define TX_STATUS_ENTRY(x) case TX_STATUS_FAIL_ ## x: return #x
1998
1999 static void iwl4965_rx_csa(struct iwl_priv *priv, struct iwl_rx_mem_buffer *rxb)
2000 {
2001 struct iwl_rx_packet *pkt = (struct iwl_rx_packet *)rxb->skb->data;
2002 struct iwl_rxon_cmd *rxon = (void *)&priv->active_rxon;
2003 struct iwl4965_csa_notification *csa = &(pkt->u.csa_notif);
2004 IWL_DEBUG_11H("CSA notif: channel %d, status %d\n",
2005 le16_to_cpu(csa->channel), le32_to_cpu(csa->status));
2006 rxon->channel = csa->channel;
2007 priv->staging_rxon.channel = csa->channel;
2008 }
2009
2010 static void iwl4965_rx_spectrum_measure_notif(struct iwl_priv *priv,
2011 struct iwl_rx_mem_buffer *rxb)
2012 {
2013 #ifdef CONFIG_IWL4965_SPECTRUM_MEASUREMENT
2014 struct iwl_rx_packet *pkt = (struct iwl_rx_packet *)rxb->skb->data;
2015 struct iwl4965_spectrum_notification *report = &(pkt->u.spectrum_notif);
2016
2017 if (!report->state) {
2018 IWL_DEBUG(IWL_DL_11H,
2019 "Spectrum Measure Notification: Start\n");
2020 return;
2021 }
2022
2023 memcpy(&priv->measure_report, report, sizeof(*report));
2024 priv->measurement_status |= MEASUREMENT_READY;
2025 #endif
2026 }
2027
2028 static void iwl4965_rx_pm_sleep_notif(struct iwl_priv *priv,
2029 struct iwl_rx_mem_buffer *rxb)
2030 {
2031 #ifdef CONFIG_IWLWIFI_DEBUG
2032 struct iwl_rx_packet *pkt = (struct iwl_rx_packet *)rxb->skb->data;
2033 struct iwl4965_sleep_notification *sleep = &(pkt->u.sleep_notif);
2034 IWL_DEBUG_RX("sleep mode: %d, src: %d\n",
2035 sleep->pm_sleep_mode, sleep->pm_wakeup_src);
2036 #endif
2037 }
2038
2039 static void iwl4965_rx_pm_debug_statistics_notif(struct iwl_priv *priv,
2040 struct iwl_rx_mem_buffer *rxb)
2041 {
2042 struct iwl_rx_packet *pkt = (struct iwl_rx_packet *)rxb->skb->data;
2043 IWL_DEBUG_RADIO("Dumping %d bytes of unhandled "
2044 "notification for %s:\n",
2045 le32_to_cpu(pkt->len), get_cmd_string(pkt->hdr.cmd));
2046 iwl_print_hex_dump(priv, IWL_DL_RADIO, pkt->u.raw, le32_to_cpu(pkt->len));
2047 }
2048
2049 static void iwl4965_bg_beacon_update(struct work_struct *work)
2050 {
2051 struct iwl_priv *priv =
2052 container_of(work, struct iwl_priv, beacon_update);
2053 struct sk_buff *beacon;
2054
2055 /* Pull updated AP beacon from mac80211. will fail if not in AP mode */
2056 beacon = ieee80211_beacon_get(priv->hw, priv->vif, NULL);
2057
2058 if (!beacon) {
2059 IWL_ERROR("update beacon failed\n");
2060 return;
2061 }
2062
2063 mutex_lock(&priv->mutex);
2064 /* new beacon skb is allocated every time; dispose previous.*/
2065 if (priv->ibss_beacon)
2066 dev_kfree_skb(priv->ibss_beacon);
2067
2068 priv->ibss_beacon = beacon;
2069 mutex_unlock(&priv->mutex);
2070
2071 iwl4965_send_beacon_cmd(priv);
2072 }
2073
2074 static void iwl4965_rx_beacon_notif(struct iwl_priv *priv,
2075 struct iwl_rx_mem_buffer *rxb)
2076 {
2077 #ifdef CONFIG_IWLWIFI_DEBUG
2078 struct iwl_rx_packet *pkt = (struct iwl_rx_packet *)rxb->skb->data;
2079 struct iwl4965_beacon_notif *beacon = &(pkt->u.beacon_status);
2080 u8 rate = iwl4965_hw_get_rate(beacon->beacon_notify_hdr.rate_n_flags);
2081
2082 IWL_DEBUG_RX("beacon status %x retries %d iss %d "
2083 "tsf %d %d rate %d\n",
2084 le32_to_cpu(beacon->beacon_notify_hdr.status) & TX_STATUS_MSK,
2085 beacon->beacon_notify_hdr.failure_frame,
2086 le32_to_cpu(beacon->ibss_mgr_status),
2087 le32_to_cpu(beacon->high_tsf),
2088 le32_to_cpu(beacon->low_tsf), rate);
2089 #endif
2090
2091 if ((priv->iw_mode == IEEE80211_IF_TYPE_AP) &&
2092 (!test_bit(STATUS_EXIT_PENDING, &priv->status)))
2093 queue_work(priv->workqueue, &priv->beacon_update);
2094 }
2095
2096 /* Service response to REPLY_SCAN_CMD (0x80) */
2097 static void iwl4965_rx_reply_scan(struct iwl_priv *priv,
2098 struct iwl_rx_mem_buffer *rxb)
2099 {
2100 #ifdef CONFIG_IWLWIFI_DEBUG
2101 struct iwl_rx_packet *pkt = (struct iwl_rx_packet *)rxb->skb->data;
2102 struct iwl4965_scanreq_notification *notif =
2103 (struct iwl4965_scanreq_notification *)pkt->u.raw;
2104
2105 IWL_DEBUG_RX("Scan request status = 0x%x\n", notif->status);
2106 #endif
2107 }
2108
2109 /* Service SCAN_START_NOTIFICATION (0x82) */
2110 static void iwl4965_rx_scan_start_notif(struct iwl_priv *priv,
2111 struct iwl_rx_mem_buffer *rxb)
2112 {
2113 struct iwl_rx_packet *pkt = (struct iwl_rx_packet *)rxb->skb->data;
2114 struct iwl4965_scanstart_notification *notif =
2115 (struct iwl4965_scanstart_notification *)pkt->u.raw;
2116 priv->scan_start_tsf = le32_to_cpu(notif->tsf_low);
2117 IWL_DEBUG_SCAN("Scan start: "
2118 "%d [802.11%s] "
2119 "(TSF: 0x%08X:%08X) - %d (beacon timer %u)\n",
2120 notif->channel,
2121 notif->band ? "bg" : "a",
2122 notif->tsf_high,
2123 notif->tsf_low, notif->status, notif->beacon_timer);
2124 }
2125
2126 /* Service SCAN_RESULTS_NOTIFICATION (0x83) */
2127 static void iwl4965_rx_scan_results_notif(struct iwl_priv *priv,
2128 struct iwl_rx_mem_buffer *rxb)
2129 {
2130 struct iwl_rx_packet *pkt = (struct iwl_rx_packet *)rxb->skb->data;
2131 struct iwl4965_scanresults_notification *notif =
2132 (struct iwl4965_scanresults_notification *)pkt->u.raw;
2133
2134 IWL_DEBUG_SCAN("Scan ch.res: "
2135 "%d [802.11%s] "
2136 "(TSF: 0x%08X:%08X) - %d "
2137 "elapsed=%lu usec (%dms since last)\n",
2138 notif->channel,
2139 notif->band ? "bg" : "a",
2140 le32_to_cpu(notif->tsf_high),
2141 le32_to_cpu(notif->tsf_low),
2142 le32_to_cpu(notif->statistics[0]),
2143 le32_to_cpu(notif->tsf_low) - priv->scan_start_tsf,
2144 jiffies_to_msecs(elapsed_jiffies
2145 (priv->last_scan_jiffies, jiffies)));
2146
2147 priv->last_scan_jiffies = jiffies;
2148 priv->next_scan_jiffies = 0;
2149 }
2150
2151 /* Service SCAN_COMPLETE_NOTIFICATION (0x84) */
2152 static void iwl4965_rx_scan_complete_notif(struct iwl_priv *priv,
2153 struct iwl_rx_mem_buffer *rxb)
2154 {
2155 struct iwl_rx_packet *pkt = (struct iwl_rx_packet *)rxb->skb->data;
2156 struct iwl4965_scancomplete_notification *scan_notif = (void *)pkt->u.raw;
2157
2158 IWL_DEBUG_SCAN("Scan complete: %d channels (TSF 0x%08X:%08X) - %d\n",
2159 scan_notif->scanned_channels,
2160 scan_notif->tsf_low,
2161 scan_notif->tsf_high, scan_notif->status);
2162
2163 /* The HW is no longer scanning */
2164 clear_bit(STATUS_SCAN_HW, &priv->status);
2165
2166 /* The scan completion notification came in, so kill that timer... */
2167 cancel_delayed_work(&priv->scan_check);
2168
2169 IWL_DEBUG_INFO("Scan pass on %sGHz took %dms\n",
2170 (priv->scan_bands == 2) ? "2.4" : "5.2",
2171 jiffies_to_msecs(elapsed_jiffies
2172 (priv->scan_pass_start, jiffies)));
2173
2174 /* Remove this scanned band from the list
2175 * of pending bands to scan */
2176 priv->scan_bands--;
2177
2178 /* If a request to abort was given, or the scan did not succeed
2179 * then we reset the scan state machine and terminate,
2180 * re-queuing another scan if one has been requested */
2181 if (test_bit(STATUS_SCAN_ABORTING, &priv->status)) {
2182 IWL_DEBUG_INFO("Aborted scan completed.\n");
2183 clear_bit(STATUS_SCAN_ABORTING, &priv->status);
2184 } else {
2185 /* If there are more bands on this scan pass reschedule */
2186 if (priv->scan_bands > 0)
2187 goto reschedule;
2188 }
2189
2190 priv->last_scan_jiffies = jiffies;
2191 priv->next_scan_jiffies = 0;
2192 IWL_DEBUG_INFO("Setting scan to off\n");
2193
2194 clear_bit(STATUS_SCANNING, &priv->status);
2195
2196 IWL_DEBUG_INFO("Scan took %dms\n",
2197 jiffies_to_msecs(elapsed_jiffies(priv->scan_start, jiffies)));
2198
2199 queue_work(priv->workqueue, &priv->scan_completed);
2200
2201 return;
2202
2203 reschedule:
2204 priv->scan_pass_start = jiffies;
2205 queue_work(priv->workqueue, &priv->request_scan);
2206 }
2207
2208 /* Handle notification from uCode that card's power state is changing
2209 * due to software, hardware, or critical temperature RFKILL */
2210 static void iwl4965_rx_card_state_notif(struct iwl_priv *priv,
2211 struct iwl_rx_mem_buffer *rxb)
2212 {
2213 struct iwl_rx_packet *pkt = (struct iwl_rx_packet *)rxb->skb->data;
2214 u32 flags = le32_to_cpu(pkt->u.card_state_notif.flags);
2215 unsigned long status = priv->status;
2216
2217 IWL_DEBUG_RF_KILL("Card state received: HW:%s SW:%s\n",
2218 (flags & HW_CARD_DISABLED) ? "Kill" : "On",
2219 (flags & SW_CARD_DISABLED) ? "Kill" : "On");
2220
2221 if (flags & (SW_CARD_DISABLED | HW_CARD_DISABLED |
2222 RF_CARD_DISABLED)) {
2223
2224 iwl_write32(priv, CSR_UCODE_DRV_GP1_SET,
2225 CSR_UCODE_DRV_GP1_BIT_CMD_BLOCKED);
2226
2227 if (!iwl_grab_nic_access(priv)) {
2228 iwl_write_direct32(
2229 priv, HBUS_TARG_MBX_C,
2230 HBUS_TARG_MBX_C_REG_BIT_CMD_BLOCKED);
2231
2232 iwl_release_nic_access(priv);
2233 }
2234
2235 if (!(flags & RXON_CARD_DISABLED)) {
2236 iwl_write32(priv, CSR_UCODE_DRV_GP1_CLR,
2237 CSR_UCODE_DRV_GP1_BIT_CMD_BLOCKED);
2238 if (!iwl_grab_nic_access(priv)) {
2239 iwl_write_direct32(
2240 priv, HBUS_TARG_MBX_C,
2241 HBUS_TARG_MBX_C_REG_BIT_CMD_BLOCKED);
2242
2243 iwl_release_nic_access(priv);
2244 }
2245 }
2246
2247 if (flags & RF_CARD_DISABLED) {
2248 iwl_write32(priv, CSR_UCODE_DRV_GP1_SET,
2249 CSR_UCODE_DRV_GP1_REG_BIT_CT_KILL_EXIT);
2250 iwl_read32(priv, CSR_UCODE_DRV_GP1);
2251 if (!iwl_grab_nic_access(priv))
2252 iwl_release_nic_access(priv);
2253 }
2254 }
2255
2256 if (flags & HW_CARD_DISABLED)
2257 set_bit(STATUS_RF_KILL_HW, &priv->status);
2258 else
2259 clear_bit(STATUS_RF_KILL_HW, &priv->status);
2260
2261
2262 if (flags & SW_CARD_DISABLED)
2263 set_bit(STATUS_RF_KILL_SW, &priv->status);
2264 else
2265 clear_bit(STATUS_RF_KILL_SW, &priv->status);
2266
2267 if (!(flags & RXON_CARD_DISABLED))
2268 iwl4965_scan_cancel(priv);
2269
2270 if ((test_bit(STATUS_RF_KILL_HW, &status) !=
2271 test_bit(STATUS_RF_KILL_HW, &priv->status)) ||
2272 (test_bit(STATUS_RF_KILL_SW, &status) !=
2273 test_bit(STATUS_RF_KILL_SW, &priv->status)))
2274 queue_work(priv->workqueue, &priv->rf_kill);
2275 else
2276 wake_up_interruptible(&priv->wait_command_queue);
2277 }
2278
2279 /**
2280 * iwl4965_setup_rx_handlers - Initialize Rx handler callbacks
2281 *
2282 * Setup the RX handlers for each of the reply types sent from the uCode
2283 * to the host.
2284 *
2285 * This function chains into the hardware specific files for them to setup
2286 * any hardware specific handlers as well.
2287 */
2288 static void iwl4965_setup_rx_handlers(struct iwl_priv *priv)
2289 {
2290 priv->rx_handlers[REPLY_ALIVE] = iwl4965_rx_reply_alive;
2291 priv->rx_handlers[REPLY_ADD_STA] = iwl4965_rx_reply_add_sta;
2292 priv->rx_handlers[REPLY_ERROR] = iwl4965_rx_reply_error;
2293 priv->rx_handlers[CHANNEL_SWITCH_NOTIFICATION] = iwl4965_rx_csa;
2294 priv->rx_handlers[SPECTRUM_MEASURE_NOTIFICATION] =
2295 iwl4965_rx_spectrum_measure_notif;
2296 priv->rx_handlers[PM_SLEEP_NOTIFICATION] = iwl4965_rx_pm_sleep_notif;
2297 priv->rx_handlers[PM_DEBUG_STATISTIC_NOTIFIC] =
2298 iwl4965_rx_pm_debug_statistics_notif;
2299 priv->rx_handlers[BEACON_NOTIFICATION] = iwl4965_rx_beacon_notif;
2300
2301 /*
2302 * The same handler is used for both the REPLY to a discrete
2303 * statistics request from the host as well as for the periodic
2304 * statistics notifications (after received beacons) from the uCode.
2305 */
2306 priv->rx_handlers[REPLY_STATISTICS_CMD] = iwl4965_hw_rx_statistics;
2307 priv->rx_handlers[STATISTICS_NOTIFICATION] = iwl4965_hw_rx_statistics;
2308
2309 priv->rx_handlers[REPLY_SCAN_CMD] = iwl4965_rx_reply_scan;
2310 priv->rx_handlers[SCAN_START_NOTIFICATION] = iwl4965_rx_scan_start_notif;
2311 priv->rx_handlers[SCAN_RESULTS_NOTIFICATION] =
2312 iwl4965_rx_scan_results_notif;
2313 priv->rx_handlers[SCAN_COMPLETE_NOTIFICATION] =
2314 iwl4965_rx_scan_complete_notif;
2315 priv->rx_handlers[CARD_STATE_NOTIFICATION] = iwl4965_rx_card_state_notif;
2316 priv->rx_handlers[REPLY_TX] = iwl4965_rx_reply_tx;
2317
2318 /* Set up hardware specific Rx handlers */
2319 priv->cfg->ops->lib->rx_handler_setup(priv);
2320 }
2321
2322 /**
2323 * iwl4965_tx_cmd_complete - Pull unused buffers off the queue and reclaim them
2324 * @rxb: Rx buffer to reclaim
2325 *
2326 * If an Rx buffer has an async callback associated with it the callback
2327 * will be executed. The attached skb (if present) will only be freed
2328 * if the callback returns 1
2329 */
2330 static void iwl4965_tx_cmd_complete(struct iwl_priv *priv,
2331 struct iwl_rx_mem_buffer *rxb)
2332 {
2333 struct iwl_rx_packet *pkt = (struct iwl_rx_packet *)rxb->skb->data;
2334 u16 sequence = le16_to_cpu(pkt->hdr.sequence);
2335 int txq_id = SEQ_TO_QUEUE(sequence);
2336 int index = SEQ_TO_INDEX(sequence);
2337 int huge = sequence & SEQ_HUGE_FRAME;
2338 int cmd_index;
2339 struct iwl_cmd *cmd;
2340
2341 /* If a Tx command is being handled and it isn't in the actual
2342 * command queue then there a command routing bug has been introduced
2343 * in the queue management code. */
2344 if (txq_id != IWL_CMD_QUEUE_NUM)
2345 IWL_ERROR("Error wrong command queue %d command id 0x%X\n",
2346 txq_id, pkt->hdr.cmd);
2347 BUG_ON(txq_id != IWL_CMD_QUEUE_NUM);
2348
2349 cmd_index = get_cmd_index(&priv->txq[IWL_CMD_QUEUE_NUM].q, index, huge);
2350 cmd = &priv->txq[IWL_CMD_QUEUE_NUM].cmd[cmd_index];
2351
2352 /* Input error checking is done when commands are added to queue. */
2353 if (cmd->meta.flags & CMD_WANT_SKB) {
2354 cmd->meta.source->u.skb = rxb->skb;
2355 rxb->skb = NULL;
2356 } else if (cmd->meta.u.callback &&
2357 !cmd->meta.u.callback(priv, cmd, rxb->skb))
2358 rxb->skb = NULL;
2359
2360 iwl4965_tx_queue_reclaim(priv, txq_id, index);
2361
2362 if (!(cmd->meta.flags & CMD_ASYNC)) {
2363 clear_bit(STATUS_HCMD_ACTIVE, &priv->status);
2364 wake_up_interruptible(&priv->wait_command_queue);
2365 }
2366 }
2367
2368 /*
2369 * this should be called while priv->lock is locked
2370 */
2371 static void __iwl_rx_replenish(struct iwl_priv *priv)
2372 {
2373 iwl_rx_allocate(priv);
2374 iwl_rx_queue_restock(priv);
2375 }
2376
2377
2378 /**
2379 * iwl_rx_handle - Main entry function for receiving responses from uCode
2380 *
2381 * Uses the priv->rx_handlers callback function array to invoke
2382 * the appropriate handlers, including command responses,
2383 * frame-received notifications, and other notifications.
2384 */
2385 void iwl_rx_handle(struct iwl_priv *priv)
2386 {
2387 struct iwl_rx_mem_buffer *rxb;
2388 struct iwl_rx_packet *pkt;
2389 struct iwl_rx_queue *rxq = &priv->rxq;
2390 u32 r, i;
2391 int reclaim;
2392 unsigned long flags;
2393 u8 fill_rx = 0;
2394 u32 count = 8;
2395
2396 /* uCode's read index (stored in shared DRAM) indicates the last Rx
2397 * buffer that the driver may process (last buffer filled by ucode). */
2398 r = priv->cfg->ops->lib->shared_mem_rx_idx(priv);
2399 i = rxq->read;
2400
2401 /* Rx interrupt, but nothing sent from uCode */
2402 if (i == r)
2403 IWL_DEBUG(IWL_DL_RX, "r = %d, i = %d\n", r, i);
2404
2405 if (iwl_rx_queue_space(rxq) > (RX_QUEUE_SIZE / 2))
2406 fill_rx = 1;
2407
2408 while (i != r) {
2409 rxb = rxq->queue[i];
2410
2411 /* If an RXB doesn't have a Rx queue slot associated with it,
2412 * then a bug has been introduced in the queue refilling
2413 * routines -- catch it here */
2414 BUG_ON(rxb == NULL);
2415
2416 rxq->queue[i] = NULL;
2417
2418 pci_dma_sync_single_for_cpu(priv->pci_dev, rxb->dma_addr,
2419 priv->hw_params.rx_buf_size,
2420 PCI_DMA_FROMDEVICE);
2421 pkt = (struct iwl_rx_packet *)rxb->skb->data;
2422
2423 /* Reclaim a command buffer only if this packet is a response
2424 * to a (driver-originated) command.
2425 * If the packet (e.g. Rx frame) originated from uCode,
2426 * there is no command buffer to reclaim.
2427 * Ucode should set SEQ_RX_FRAME bit if ucode-originated,
2428 * but apparently a few don't get set; catch them here. */
2429 reclaim = !(pkt->hdr.sequence & SEQ_RX_FRAME) &&
2430 (pkt->hdr.cmd != REPLY_RX_PHY_CMD) &&
2431 (pkt->hdr.cmd != REPLY_RX) &&
2432 (pkt->hdr.cmd != REPLY_COMPRESSED_BA) &&
2433 (pkt->hdr.cmd != STATISTICS_NOTIFICATION) &&
2434 (pkt->hdr.cmd != REPLY_TX);
2435
2436 /* Based on type of command response or notification,
2437 * handle those that need handling via function in
2438 * rx_handlers table. See iwl4965_setup_rx_handlers() */
2439 if (priv->rx_handlers[pkt->hdr.cmd]) {
2440 IWL_DEBUG(IWL_DL_RX, "r = %d, i = %d, %s, 0x%02x\n", r,
2441 i, get_cmd_string(pkt->hdr.cmd), pkt->hdr.cmd);
2442 priv->rx_handlers[pkt->hdr.cmd] (priv, rxb);
2443 } else {
2444 /* No handling needed */
2445 IWL_DEBUG(IWL_DL_RX,
2446 "r %d i %d No handler needed for %s, 0x%02x\n",
2447 r, i, get_cmd_string(pkt->hdr.cmd),
2448 pkt->hdr.cmd);
2449 }
2450
2451 if (reclaim) {
2452 /* Invoke any callbacks, transfer the skb to caller, and
2453 * fire off the (possibly) blocking iwl_send_cmd()
2454 * as we reclaim the driver command queue */
2455 if (rxb && rxb->skb)
2456 iwl4965_tx_cmd_complete(priv, rxb);
2457 else
2458 IWL_WARNING("Claim null rxb?\n");
2459 }
2460
2461 /* For now we just don't re-use anything. We can tweak this
2462 * later to try and re-use notification packets and SKBs that
2463 * fail to Rx correctly */
2464 if (rxb->skb != NULL) {
2465 priv->alloc_rxb_skb--;
2466 dev_kfree_skb_any(rxb->skb);
2467 rxb->skb = NULL;
2468 }
2469
2470 pci_unmap_single(priv->pci_dev, rxb->dma_addr,
2471 priv->hw_params.rx_buf_size,
2472 PCI_DMA_FROMDEVICE);
2473 spin_lock_irqsave(&rxq->lock, flags);
2474 list_add_tail(&rxb->list, &priv->rxq.rx_used);
2475 spin_unlock_irqrestore(&rxq->lock, flags);
2476 i = (i + 1) & RX_QUEUE_MASK;
2477 /* If there are a lot of unused frames,
2478 * restock the Rx queue so ucode wont assert. */
2479 if (fill_rx) {
2480 count++;
2481 if (count >= 8) {
2482 priv->rxq.read = i;
2483 __iwl_rx_replenish(priv);
2484 count = 0;
2485 }
2486 }
2487 }
2488
2489 /* Backtrack one entry */
2490 priv->rxq.read = i;
2491 iwl_rx_queue_restock(priv);
2492 }
2493 /* Convert linear signal-to-noise ratio into dB */
2494 static u8 ratio2dB[100] = {
2495 /* 0 1 2 3 4 5 6 7 8 9 */
2496 0, 0, 6, 10, 12, 14, 16, 17, 18, 19, /* 00 - 09 */
2497 20, 21, 22, 22, 23, 23, 24, 25, 26, 26, /* 10 - 19 */
2498 26, 26, 26, 27, 27, 28, 28, 28, 29, 29, /* 20 - 29 */
2499 29, 30, 30, 30, 31, 31, 31, 31, 32, 32, /* 30 - 39 */
2500 32, 32, 32, 33, 33, 33, 33, 33, 34, 34, /* 40 - 49 */
2501 34, 34, 34, 34, 35, 35, 35, 35, 35, 35, /* 50 - 59 */
2502 36, 36, 36, 36, 36, 36, 36, 37, 37, 37, /* 60 - 69 */
2503 37, 37, 37, 37, 37, 38, 38, 38, 38, 38, /* 70 - 79 */
2504 38, 38, 38, 38, 38, 39, 39, 39, 39, 39, /* 80 - 89 */
2505 39, 39, 39, 39, 39, 40, 40, 40, 40, 40 /* 90 - 99 */
2506 };
2507
2508 /* Calculates a relative dB value from a ratio of linear
2509 * (i.e. not dB) signal levels.
2510 * Conversion assumes that levels are voltages (20*log), not powers (10*log). */
2511 int iwl4965_calc_db_from_ratio(int sig_ratio)
2512 {
2513 /* 1000:1 or higher just report as 60 dB */
2514 if (sig_ratio >= 1000)
2515 return 60;
2516
2517 /* 100:1 or higher, divide by 10 and use table,
2518 * add 20 dB to make up for divide by 10 */
2519 if (sig_ratio >= 100)
2520 return (20 + (int)ratio2dB[sig_ratio/10]);
2521
2522 /* We shouldn't see this */
2523 if (sig_ratio < 1)
2524 return 0;
2525
2526 /* Use table for ratios 1:1 - 99:1 */
2527 return (int)ratio2dB[sig_ratio];
2528 }
2529
2530 #define PERFECT_RSSI (-20) /* dBm */
2531 #define WORST_RSSI (-95) /* dBm */
2532 #define RSSI_RANGE (PERFECT_RSSI - WORST_RSSI)
2533
2534 /* Calculate an indication of rx signal quality (a percentage, not dBm!).
2535 * See http://www.ces.clemson.edu/linux/signal_quality.shtml for info
2536 * about formulas used below. */
2537 int iwl4965_calc_sig_qual(int rssi_dbm, int noise_dbm)
2538 {
2539 int sig_qual;
2540 int degradation = PERFECT_RSSI - rssi_dbm;
2541
2542 /* If we get a noise measurement, use signal-to-noise ratio (SNR)
2543 * as indicator; formula is (signal dbm - noise dbm).
2544 * SNR at or above 40 is a great signal (100%).
2545 * Below that, scale to fit SNR of 0 - 40 dB within 0 - 100% indicator.
2546 * Weakest usable signal is usually 10 - 15 dB SNR. */
2547 if (noise_dbm) {
2548 if (rssi_dbm - noise_dbm >= 40)
2549 return 100;
2550 else if (rssi_dbm < noise_dbm)
2551 return 0;
2552 sig_qual = ((rssi_dbm - noise_dbm) * 5) / 2;
2553
2554 /* Else use just the signal level.
2555 * This formula is a least squares fit of data points collected and
2556 * compared with a reference system that had a percentage (%) display
2557 * for signal quality. */
2558 } else
2559 sig_qual = (100 * (RSSI_RANGE * RSSI_RANGE) - degradation *
2560 (15 * RSSI_RANGE + 62 * degradation)) /
2561 (RSSI_RANGE * RSSI_RANGE);
2562
2563 if (sig_qual > 100)
2564 sig_qual = 100;
2565 else if (sig_qual < 1)
2566 sig_qual = 0;
2567
2568 return sig_qual;
2569 }
2570
2571 #ifdef CONFIG_IWLWIFI_DEBUG
2572 static void iwl4965_print_rx_config_cmd(struct iwl_priv *priv)
2573 {
2574 struct iwl_rxon_cmd *rxon = &priv->staging_rxon;
2575 DECLARE_MAC_BUF(mac);
2576
2577 IWL_DEBUG_RADIO("RX CONFIG:\n");
2578 iwl_print_hex_dump(priv, IWL_DL_RADIO, (u8 *) rxon, sizeof(*rxon));
2579 IWL_DEBUG_RADIO("u16 channel: 0x%x\n", le16_to_cpu(rxon->channel));
2580 IWL_DEBUG_RADIO("u32 flags: 0x%08X\n", le32_to_cpu(rxon->flags));
2581 IWL_DEBUG_RADIO("u32 filter_flags: 0x%08x\n",
2582 le32_to_cpu(rxon->filter_flags));
2583 IWL_DEBUG_RADIO("u8 dev_type: 0x%x\n", rxon->dev_type);
2584 IWL_DEBUG_RADIO("u8 ofdm_basic_rates: 0x%02x\n",
2585 rxon->ofdm_basic_rates);
2586 IWL_DEBUG_RADIO("u8 cck_basic_rates: 0x%02x\n", rxon->cck_basic_rates);
2587 IWL_DEBUG_RADIO("u8[6] node_addr: %s\n",
2588 print_mac(mac, rxon->node_addr));
2589 IWL_DEBUG_RADIO("u8[6] bssid_addr: %s\n",
2590 print_mac(mac, rxon->bssid_addr));
2591 IWL_DEBUG_RADIO("u16 assoc_id: 0x%x\n", le16_to_cpu(rxon->assoc_id));
2592 }
2593 #endif
2594
2595 static void iwl4965_enable_interrupts(struct iwl_priv *priv)
2596 {
2597 IWL_DEBUG_ISR("Enabling interrupts\n");
2598 set_bit(STATUS_INT_ENABLED, &priv->status);
2599 iwl_write32(priv, CSR_INT_MASK, CSR_INI_SET_MASK);
2600 }
2601
2602 /* call this function to flush any scheduled tasklet */
2603 static inline void iwl_synchronize_irq(struct iwl_priv *priv)
2604 {
2605 /* wait to make sure we flush pedding tasklet*/
2606 synchronize_irq(priv->pci_dev->irq);
2607 tasklet_kill(&priv->irq_tasklet);
2608 }
2609
2610 static inline void iwl4965_disable_interrupts(struct iwl_priv *priv)
2611 {
2612 clear_bit(STATUS_INT_ENABLED, &priv->status);
2613
2614 /* disable interrupts from uCode/NIC to host */
2615 iwl_write32(priv, CSR_INT_MASK, 0x00000000);
2616
2617 /* acknowledge/clear/reset any interrupts still pending
2618 * from uCode or flow handler (Rx/Tx DMA) */
2619 iwl_write32(priv, CSR_INT, 0xffffffff);
2620 iwl_write32(priv, CSR_FH_INT_STATUS, 0xffffffff);
2621 IWL_DEBUG_ISR("Disabled interrupts\n");
2622 }
2623
2624 static const char *desc_lookup(int i)
2625 {
2626 switch (i) {
2627 case 1:
2628 return "FAIL";
2629 case 2:
2630 return "BAD_PARAM";
2631 case 3:
2632 return "BAD_CHECKSUM";
2633 case 4:
2634 return "NMI_INTERRUPT";
2635 case 5:
2636 return "SYSASSERT";
2637 case 6:
2638 return "FATAL_ERROR";
2639 }
2640
2641 return "UNKNOWN";
2642 }
2643
2644 #define ERROR_START_OFFSET (1 * sizeof(u32))
2645 #define ERROR_ELEM_SIZE (7 * sizeof(u32))
2646
2647 static void iwl4965_dump_nic_error_log(struct iwl_priv *priv)
2648 {
2649 u32 data2, line;
2650 u32 desc, time, count, base, data1;
2651 u32 blink1, blink2, ilink1, ilink2;
2652 int rc;
2653
2654 base = le32_to_cpu(priv->card_alive.error_event_table_ptr);
2655
2656 if (!priv->cfg->ops->lib->is_valid_rtc_data_addr(base)) {
2657 IWL_ERROR("Not valid error log pointer 0x%08X\n", base);
2658 return;
2659 }
2660
2661 rc = iwl_grab_nic_access(priv);
2662 if (rc) {
2663 IWL_WARNING("Can not read from adapter at this time.\n");
2664 return;
2665 }
2666
2667 count = iwl_read_targ_mem(priv, base);
2668
2669 if (ERROR_START_OFFSET <= count * ERROR_ELEM_SIZE) {
2670 IWL_ERROR("Start IWL Error Log Dump:\n");
2671 IWL_ERROR("Status: 0x%08lX, count: %d\n", priv->status, count);
2672 }
2673
2674 desc = iwl_read_targ_mem(priv, base + 1 * sizeof(u32));
2675 blink1 = iwl_read_targ_mem(priv, base + 3 * sizeof(u32));
2676 blink2 = iwl_read_targ_mem(priv, base + 4 * sizeof(u32));
2677 ilink1 = iwl_read_targ_mem(priv, base + 5 * sizeof(u32));
2678 ilink2 = iwl_read_targ_mem(priv, base + 6 * sizeof(u32));
2679 data1 = iwl_read_targ_mem(priv, base + 7 * sizeof(u32));
2680 data2 = iwl_read_targ_mem(priv, base + 8 * sizeof(u32));
2681 line = iwl_read_targ_mem(priv, base + 9 * sizeof(u32));
2682 time = iwl_read_targ_mem(priv, base + 11 * sizeof(u32));
2683
2684 IWL_ERROR("Desc Time "
2685 "data1 data2 line\n");
2686 IWL_ERROR("%-13s (#%d) %010u 0x%08X 0x%08X %u\n",
2687 desc_lookup(desc), desc, time, data1, data2, line);
2688 IWL_ERROR("blink1 blink2 ilink1 ilink2\n");
2689 IWL_ERROR("0x%05X 0x%05X 0x%05X 0x%05X\n", blink1, blink2,
2690 ilink1, ilink2);
2691
2692 iwl_release_nic_access(priv);
2693 }
2694
2695 #define EVENT_START_OFFSET (4 * sizeof(u32))
2696
2697 /**
2698 * iwl4965_print_event_log - Dump error event log to syslog
2699 *
2700 * NOTE: Must be called with iwl_grab_nic_access() already obtained!
2701 */
2702 static void iwl4965_print_event_log(struct iwl_priv *priv, u32 start_idx,
2703 u32 num_events, u32 mode)
2704 {
2705 u32 i;
2706 u32 base; /* SRAM byte address of event log header */
2707 u32 event_size; /* 2 u32s, or 3 u32s if timestamp recorded */
2708 u32 ptr; /* SRAM byte address of log data */
2709 u32 ev, time, data; /* event log data */
2710
2711 if (num_events == 0)
2712 return;
2713
2714 base = le32_to_cpu(priv->card_alive.log_event_table_ptr);
2715
2716 if (mode == 0)
2717 event_size = 2 * sizeof(u32);
2718 else
2719 event_size = 3 * sizeof(u32);
2720
2721 ptr = base + EVENT_START_OFFSET + (start_idx * event_size);
2722
2723 /* "time" is actually "data" for mode 0 (no timestamp).
2724 * place event id # at far right for easier visual parsing. */
2725 for (i = 0; i < num_events; i++) {
2726 ev = iwl_read_targ_mem(priv, ptr);
2727 ptr += sizeof(u32);
2728 time = iwl_read_targ_mem(priv, ptr);
2729 ptr += sizeof(u32);
2730 if (mode == 0)
2731 IWL_ERROR("0x%08x\t%04u\n", time, ev); /* data, ev */
2732 else {
2733 data = iwl_read_targ_mem(priv, ptr);
2734 ptr += sizeof(u32);
2735 IWL_ERROR("%010u\t0x%08x\t%04u\n", time, data, ev);
2736 }
2737 }
2738 }
2739
2740 static void iwl4965_dump_nic_event_log(struct iwl_priv *priv)
2741 {
2742 int rc;
2743 u32 base; /* SRAM byte address of event log header */
2744 u32 capacity; /* event log capacity in # entries */
2745 u32 mode; /* 0 - no timestamp, 1 - timestamp recorded */
2746 u32 num_wraps; /* # times uCode wrapped to top of log */
2747 u32 next_entry; /* index of next entry to be written by uCode */
2748 u32 size; /* # entries that we'll print */
2749
2750 base = le32_to_cpu(priv->card_alive.log_event_table_ptr);
2751 if (!priv->cfg->ops->lib->is_valid_rtc_data_addr(base)) {
2752 IWL_ERROR("Invalid event log pointer 0x%08X\n", base);
2753 return;
2754 }
2755
2756 rc = iwl_grab_nic_access(priv);
2757 if (rc) {
2758 IWL_WARNING("Can not read from adapter at this time.\n");
2759 return;
2760 }
2761
2762 /* event log header */
2763 capacity = iwl_read_targ_mem(priv, base);
2764 mode = iwl_read_targ_mem(priv, base + (1 * sizeof(u32)));
2765 num_wraps = iwl_read_targ_mem(priv, base + (2 * sizeof(u32)));
2766 next_entry = iwl_read_targ_mem(priv, base + (3 * sizeof(u32)));
2767
2768 size = num_wraps ? capacity : next_entry;
2769
2770 /* bail out if nothing in log */
2771 if (size == 0) {
2772 IWL_ERROR("Start IWL Event Log Dump: nothing in log\n");
2773 iwl_release_nic_access(priv);
2774 return;
2775 }
2776
2777 IWL_ERROR("Start IWL Event Log Dump: display count %d, wraps %d\n",
2778 size, num_wraps);
2779
2780 /* if uCode has wrapped back to top of log, start at the oldest entry,
2781 * i.e the next one that uCode would fill. */
2782 if (num_wraps)
2783 iwl4965_print_event_log(priv, next_entry,
2784 capacity - next_entry, mode);
2785
2786 /* (then/else) start at top of log */
2787 iwl4965_print_event_log(priv, 0, next_entry, mode);
2788
2789 iwl_release_nic_access(priv);
2790 }
2791
2792 /**
2793 * iwl4965_irq_handle_error - called for HW or SW error interrupt from card
2794 */
2795 static void iwl4965_irq_handle_error(struct iwl_priv *priv)
2796 {
2797 /* Set the FW error flag -- cleared on iwl4965_down */
2798 set_bit(STATUS_FW_ERROR, &priv->status);
2799
2800 /* Cancel currently queued command. */
2801 clear_bit(STATUS_HCMD_ACTIVE, &priv->status);
2802
2803 #ifdef CONFIG_IWLWIFI_DEBUG
2804 if (priv->debug_level & IWL_DL_FW_ERRORS) {
2805 iwl4965_dump_nic_error_log(priv);
2806 iwl4965_dump_nic_event_log(priv);
2807 iwl4965_print_rx_config_cmd(priv);
2808 }
2809 #endif
2810
2811 wake_up_interruptible(&priv->wait_command_queue);
2812
2813 /* Keep the restart process from trying to send host
2814 * commands by clearing the INIT status bit */
2815 clear_bit(STATUS_READY, &priv->status);
2816
2817 if (!test_bit(STATUS_EXIT_PENDING, &priv->status)) {
2818 IWL_DEBUG(IWL_DL_FW_ERRORS,
2819 "Restarting adapter due to uCode error.\n");
2820
2821 if (iwl_is_associated(priv)) {
2822 memcpy(&priv->recovery_rxon, &priv->active_rxon,
2823 sizeof(priv->recovery_rxon));
2824 priv->error_recovering = 1;
2825 }
2826 if (priv->cfg->mod_params->restart_fw)
2827 queue_work(priv->workqueue, &priv->restart);
2828 }
2829 }
2830
2831 static void iwl4965_error_recovery(struct iwl_priv *priv)
2832 {
2833 unsigned long flags;
2834
2835 memcpy(&priv->staging_rxon, &priv->recovery_rxon,
2836 sizeof(priv->staging_rxon));
2837 priv->staging_rxon.filter_flags &= ~RXON_FILTER_ASSOC_MSK;
2838 iwl4965_commit_rxon(priv);
2839
2840 iwl_rxon_add_station(priv, priv->bssid, 1);
2841
2842 spin_lock_irqsave(&priv->lock, flags);
2843 priv->assoc_id = le16_to_cpu(priv->staging_rxon.assoc_id);
2844 priv->error_recovering = 0;
2845 spin_unlock_irqrestore(&priv->lock, flags);
2846 }
2847
2848 static void iwl4965_irq_tasklet(struct iwl_priv *priv)
2849 {
2850 u32 inta, handled = 0;
2851 u32 inta_fh;
2852 unsigned long flags;
2853 #ifdef CONFIG_IWLWIFI_DEBUG
2854 u32 inta_mask;
2855 #endif
2856
2857 spin_lock_irqsave(&priv->lock, flags);
2858
2859 /* Ack/clear/reset pending uCode interrupts.
2860 * Note: Some bits in CSR_INT are "OR" of bits in CSR_FH_INT_STATUS,
2861 * and will clear only when CSR_FH_INT_STATUS gets cleared. */
2862 inta = iwl_read32(priv, CSR_INT);
2863 iwl_write32(priv, CSR_INT, inta);
2864
2865 /* Ack/clear/reset pending flow-handler (DMA) interrupts.
2866 * Any new interrupts that happen after this, either while we're
2867 * in this tasklet, or later, will show up in next ISR/tasklet. */
2868 inta_fh = iwl_read32(priv, CSR_FH_INT_STATUS);
2869 iwl_write32(priv, CSR_FH_INT_STATUS, inta_fh);
2870
2871 #ifdef CONFIG_IWLWIFI_DEBUG
2872 if (priv->debug_level & IWL_DL_ISR) {
2873 /* just for debug */
2874 inta_mask = iwl_read32(priv, CSR_INT_MASK);
2875 IWL_DEBUG_ISR("inta 0x%08x, enabled 0x%08x, fh 0x%08x\n",
2876 inta, inta_mask, inta_fh);
2877 }
2878 #endif
2879
2880 /* Since CSR_INT and CSR_FH_INT_STATUS reads and clears are not
2881 * atomic, make sure that inta covers all the interrupts that
2882 * we've discovered, even if FH interrupt came in just after
2883 * reading CSR_INT. */
2884 if (inta_fh & CSR49_FH_INT_RX_MASK)
2885 inta |= CSR_INT_BIT_FH_RX;
2886 if (inta_fh & CSR49_FH_INT_TX_MASK)
2887 inta |= CSR_INT_BIT_FH_TX;
2888
2889 /* Now service all interrupt bits discovered above. */
2890 if (inta & CSR_INT_BIT_HW_ERR) {
2891 IWL_ERROR("Microcode HW error detected. Restarting.\n");
2892
2893 /* Tell the device to stop sending interrupts */
2894 iwl4965_disable_interrupts(priv);
2895
2896 iwl4965_irq_handle_error(priv);
2897
2898 handled |= CSR_INT_BIT_HW_ERR;
2899
2900 spin_unlock_irqrestore(&priv->lock, flags);
2901
2902 return;
2903 }
2904
2905 #ifdef CONFIG_IWLWIFI_DEBUG
2906 if (priv->debug_level & (IWL_DL_ISR)) {
2907 /* NIC fires this, but we don't use it, redundant with WAKEUP */
2908 if (inta & CSR_INT_BIT_SCD)
2909 IWL_DEBUG_ISR("Scheduler finished to transmit "
2910 "the frame/frames.\n");
2911
2912 /* Alive notification via Rx interrupt will do the real work */
2913 if (inta & CSR_INT_BIT_ALIVE)
2914 IWL_DEBUG_ISR("Alive interrupt\n");
2915 }
2916 #endif
2917 /* Safely ignore these bits for debug checks below */
2918 inta &= ~(CSR_INT_BIT_SCD | CSR_INT_BIT_ALIVE);
2919
2920 /* HW RF KILL switch toggled */
2921 if (inta & CSR_INT_BIT_RF_KILL) {
2922 int hw_rf_kill = 0;
2923 if (!(iwl_read32(priv, CSR_GP_CNTRL) &
2924 CSR_GP_CNTRL_REG_FLAG_HW_RF_KILL_SW))
2925 hw_rf_kill = 1;
2926
2927 IWL_DEBUG(IWL_DL_RF_KILL, "RF_KILL bit toggled to %s.\n",
2928 hw_rf_kill ? "disable radio":"enable radio");
2929
2930 /* Queue restart only if RF_KILL switch was set to "kill"
2931 * when we loaded driver, and is now set to "enable".
2932 * After we're Alive, RF_KILL gets handled by
2933 * iwl4965_rx_card_state_notif() */
2934 if (!hw_rf_kill && !test_bit(STATUS_ALIVE, &priv->status)) {
2935 clear_bit(STATUS_RF_KILL_HW, &priv->status);
2936 queue_work(priv->workqueue, &priv->restart);
2937 }
2938
2939 handled |= CSR_INT_BIT_RF_KILL;
2940 }
2941
2942 /* Chip got too hot and stopped itself */
2943 if (inta & CSR_INT_BIT_CT_KILL) {
2944 IWL_ERROR("Microcode CT kill error detected.\n");
2945 handled |= CSR_INT_BIT_CT_KILL;
2946 }
2947
2948 /* Error detected by uCode */
2949 if (inta & CSR_INT_BIT_SW_ERR) {
2950 IWL_ERROR("Microcode SW error detected. Restarting 0x%X.\n",
2951 inta);
2952 iwl4965_irq_handle_error(priv);
2953 handled |= CSR_INT_BIT_SW_ERR;
2954 }
2955
2956 /* uCode wakes up after power-down sleep */
2957 if (inta & CSR_INT_BIT_WAKEUP) {
2958 IWL_DEBUG_ISR("Wakeup interrupt\n");
2959 iwl_rx_queue_update_write_ptr(priv, &priv->rxq);
2960 iwl_txq_update_write_ptr(priv, &priv->txq[0]);
2961 iwl_txq_update_write_ptr(priv, &priv->txq[1]);
2962 iwl_txq_update_write_ptr(priv, &priv->txq[2]);
2963 iwl_txq_update_write_ptr(priv, &priv->txq[3]);
2964 iwl_txq_update_write_ptr(priv, &priv->txq[4]);
2965 iwl_txq_update_write_ptr(priv, &priv->txq[5]);
2966
2967 handled |= CSR_INT_BIT_WAKEUP;
2968 }
2969
2970 /* All uCode command responses, including Tx command responses,
2971 * Rx "responses" (frame-received notification), and other
2972 * notifications from uCode come through here*/
2973 if (inta & (CSR_INT_BIT_FH_RX | CSR_INT_BIT_SW_RX)) {
2974 iwl_rx_handle(priv);
2975 handled |= (CSR_INT_BIT_FH_RX | CSR_INT_BIT_SW_RX);
2976 }
2977
2978 if (inta & CSR_INT_BIT_FH_TX) {
2979 IWL_DEBUG_ISR("Tx interrupt\n");
2980 handled |= CSR_INT_BIT_FH_TX;
2981 }
2982
2983 if (inta & ~handled)
2984 IWL_ERROR("Unhandled INTA bits 0x%08x\n", inta & ~handled);
2985
2986 if (inta & ~CSR_INI_SET_MASK) {
2987 IWL_WARNING("Disabled INTA bits 0x%08x were pending\n",
2988 inta & ~CSR_INI_SET_MASK);
2989 IWL_WARNING(" with FH_INT = 0x%08x\n", inta_fh);
2990 }
2991
2992 /* Re-enable all interrupts */
2993 /* only Re-enable if diabled by irq */
2994 if (test_bit(STATUS_INT_ENABLED, &priv->status))
2995 iwl4965_enable_interrupts(priv);
2996
2997 #ifdef CONFIG_IWLWIFI_DEBUG
2998 if (priv->debug_level & (IWL_DL_ISR)) {
2999 inta = iwl_read32(priv, CSR_INT);
3000 inta_mask = iwl_read32(priv, CSR_INT_MASK);
3001 inta_fh = iwl_read32(priv, CSR_FH_INT_STATUS);
3002 IWL_DEBUG_ISR("End inta 0x%08x, enabled 0x%08x, fh 0x%08x, "
3003 "flags 0x%08lx\n", inta, inta_mask, inta_fh, flags);
3004 }
3005 #endif
3006 spin_unlock_irqrestore(&priv->lock, flags);
3007 }
3008
3009 static irqreturn_t iwl4965_isr(int irq, void *data)
3010 {
3011 struct iwl_priv *priv = data;
3012 u32 inta, inta_mask;
3013 u32 inta_fh;
3014 if (!priv)
3015 return IRQ_NONE;
3016
3017 spin_lock(&priv->lock);
3018
3019 /* Disable (but don't clear!) interrupts here to avoid
3020 * back-to-back ISRs and sporadic interrupts from our NIC.
3021 * If we have something to service, the tasklet will re-enable ints.
3022 * If we *don't* have something, we'll re-enable before leaving here. */
3023 inta_mask = iwl_read32(priv, CSR_INT_MASK); /* just for debug */
3024 iwl_write32(priv, CSR_INT_MASK, 0x00000000);
3025
3026 /* Discover which interrupts are active/pending */
3027 inta = iwl_read32(priv, CSR_INT);
3028 inta_fh = iwl_read32(priv, CSR_FH_INT_STATUS);
3029
3030 /* Ignore interrupt if there's nothing in NIC to service.
3031 * This may be due to IRQ shared with another device,
3032 * or due to sporadic interrupts thrown from our NIC. */
3033 if (!inta && !inta_fh) {
3034 IWL_DEBUG_ISR("Ignore interrupt, inta == 0, inta_fh == 0\n");
3035 goto none;
3036 }
3037
3038 if ((inta == 0xFFFFFFFF) || ((inta & 0xFFFFFFF0) == 0xa5a5a5a0)) {
3039 /* Hardware disappeared. It might have already raised
3040 * an interrupt */
3041 IWL_WARNING("HARDWARE GONE?? INTA == 0x%080x\n", inta);
3042 goto unplugged;
3043 }
3044
3045 IWL_DEBUG_ISR("ISR inta 0x%08x, enabled 0x%08x, fh 0x%08x\n",
3046 inta, inta_mask, inta_fh);
3047
3048 inta &= ~CSR_INT_BIT_SCD;
3049
3050 /* iwl4965_irq_tasklet() will service interrupts and re-enable them */
3051 if (likely(inta || inta_fh))
3052 tasklet_schedule(&priv->irq_tasklet);
3053
3054 unplugged:
3055 spin_unlock(&priv->lock);
3056 return IRQ_HANDLED;
3057
3058 none:
3059 /* re-enable interrupts here since we don't have anything to service. */
3060 /* only Re-enable if diabled by irq */
3061 if (test_bit(STATUS_INT_ENABLED, &priv->status))
3062 iwl4965_enable_interrupts(priv);
3063 spin_unlock(&priv->lock);
3064 return IRQ_NONE;
3065 }
3066
3067 /* For active scan, listen ACTIVE_DWELL_TIME (msec) on each channel after
3068 * sending probe req. This should be set long enough to hear probe responses
3069 * from more than one AP. */
3070 #define IWL_ACTIVE_DWELL_TIME_24 (20) /* all times in msec */
3071 #define IWL_ACTIVE_DWELL_TIME_52 (10)
3072
3073 /* For faster active scanning, scan will move to the next channel if fewer than
3074 * PLCP_QUIET_THRESH packets are heard on this channel within
3075 * ACTIVE_QUIET_TIME after sending probe request. This shortens the dwell
3076 * time if it's a quiet channel (nothing responded to our probe, and there's
3077 * no other traffic).
3078 * Disable "quiet" feature by setting PLCP_QUIET_THRESH to 0. */
3079 #define IWL_PLCP_QUIET_THRESH __constant_cpu_to_le16(1) /* packets */
3080 #define IWL_ACTIVE_QUIET_TIME __constant_cpu_to_le16(5) /* msec */
3081
3082 /* For passive scan, listen PASSIVE_DWELL_TIME (msec) on each channel.
3083 * Must be set longer than active dwell time.
3084 * For the most reliable scan, set > AP beacon interval (typically 100msec). */
3085 #define IWL_PASSIVE_DWELL_TIME_24 (20) /* all times in msec */
3086 #define IWL_PASSIVE_DWELL_TIME_52 (10)
3087 #define IWL_PASSIVE_DWELL_BASE (100)
3088 #define IWL_CHANNEL_TUNE_TIME 5
3089
3090 static inline u16 iwl4965_get_active_dwell_time(struct iwl_priv *priv,
3091 enum ieee80211_band band)
3092 {
3093 if (band == IEEE80211_BAND_5GHZ)
3094 return IWL_ACTIVE_DWELL_TIME_52;
3095 else
3096 return IWL_ACTIVE_DWELL_TIME_24;
3097 }
3098
3099 static u16 iwl4965_get_passive_dwell_time(struct iwl_priv *priv,
3100 enum ieee80211_band band)
3101 {
3102 u16 active = iwl4965_get_active_dwell_time(priv, band);
3103 u16 passive = (band != IEEE80211_BAND_5GHZ) ?
3104 IWL_PASSIVE_DWELL_BASE + IWL_PASSIVE_DWELL_TIME_24 :
3105 IWL_PASSIVE_DWELL_BASE + IWL_PASSIVE_DWELL_TIME_52;
3106
3107 if (iwl_is_associated(priv)) {
3108 /* If we're associated, we clamp the maximum passive
3109 * dwell time to be 98% of the beacon interval (minus
3110 * 2 * channel tune time) */
3111 passive = priv->beacon_int;
3112 if ((passive > IWL_PASSIVE_DWELL_BASE) || !passive)
3113 passive = IWL_PASSIVE_DWELL_BASE;
3114 passive = (passive * 98) / 100 - IWL_CHANNEL_TUNE_TIME * 2;
3115 }
3116
3117 if (passive <= active)
3118 passive = active + 1;
3119
3120 return passive;
3121 }
3122
3123 static int iwl4965_get_channels_for_scan(struct iwl_priv *priv,
3124 enum ieee80211_band band,
3125 u8 is_active, u8 direct_mask,
3126 struct iwl4965_scan_channel *scan_ch)
3127 {
3128 const struct ieee80211_channel *channels = NULL;
3129 const struct ieee80211_supported_band *sband;
3130 const struct iwl_channel_info *ch_info;
3131 u16 passive_dwell = 0;
3132 u16 active_dwell = 0;
3133 int added, i;
3134
3135 sband = iwl_get_hw_mode(priv, band);
3136 if (!sband)
3137 return 0;
3138
3139 channels = sband->channels;
3140
3141 active_dwell = iwl4965_get_active_dwell_time(priv, band);
3142 passive_dwell = iwl4965_get_passive_dwell_time(priv, band);
3143
3144 for (i = 0, added = 0; i < sband->n_channels; i++) {
3145 if (channels[i].flags & IEEE80211_CHAN_DISABLED)
3146 continue;
3147
3148 scan_ch->channel = ieee80211_frequency_to_channel(channels[i].center_freq);
3149
3150 ch_info = iwl_get_channel_info(priv, band,
3151 scan_ch->channel);
3152 if (!is_channel_valid(ch_info)) {
3153 IWL_DEBUG_SCAN("Channel %d is INVALID for this SKU.\n",
3154 scan_ch->channel);
3155 continue;
3156 }
3157
3158 if (!is_active || is_channel_passive(ch_info) ||
3159 (channels[i].flags & IEEE80211_CHAN_PASSIVE_SCAN))
3160 scan_ch->type = 0; /* passive */
3161 else
3162 scan_ch->type = 1; /* active */
3163
3164 if (scan_ch->type & 1)
3165 scan_ch->type |= (direct_mask << 1);
3166
3167 scan_ch->active_dwell = cpu_to_le16(active_dwell);
3168 scan_ch->passive_dwell = cpu_to_le16(passive_dwell);
3169
3170 /* Set txpower levels to defaults */
3171 scan_ch->tpc.dsp_atten = 110;
3172 /* scan_pwr_info->tpc.dsp_atten; */
3173
3174 /*scan_pwr_info->tpc.tx_gain; */
3175 if (band == IEEE80211_BAND_5GHZ)
3176 scan_ch->tpc.tx_gain = ((1 << 5) | (3 << 3)) | 3;
3177 else {
3178 scan_ch->tpc.tx_gain = ((1 << 5) | (5 << 3));
3179 /* NOTE: if we were doing 6Mb OFDM for scans we'd use
3180 * power level:
3181 * scan_ch->tpc.tx_gain = ((1 << 5) | (2 << 3)) | 3;
3182 */
3183 }
3184
3185 IWL_DEBUG_SCAN("Scanning %d [%s %d]\n",
3186 scan_ch->channel,
3187 (scan_ch->type & 1) ? "ACTIVE" : "PASSIVE",
3188 (scan_ch->type & 1) ?
3189 active_dwell : passive_dwell);
3190
3191 scan_ch++;
3192 added++;
3193 }
3194
3195 IWL_DEBUG_SCAN("total channels to scan %d \n", added);
3196 return added;
3197 }
3198
3199 /******************************************************************************
3200 *
3201 * uCode download functions
3202 *
3203 ******************************************************************************/
3204
3205 static void iwl4965_dealloc_ucode_pci(struct iwl_priv *priv)
3206 {
3207 iwl_free_fw_desc(priv->pci_dev, &priv->ucode_code);
3208 iwl_free_fw_desc(priv->pci_dev, &priv->ucode_data);
3209 iwl_free_fw_desc(priv->pci_dev, &priv->ucode_data_backup);
3210 iwl_free_fw_desc(priv->pci_dev, &priv->ucode_init);
3211 iwl_free_fw_desc(priv->pci_dev, &priv->ucode_init_data);
3212 iwl_free_fw_desc(priv->pci_dev, &priv->ucode_boot);
3213 }
3214
3215 static void iwl4965_nic_start(struct iwl_priv *priv)
3216 {
3217 /* Remove all resets to allow NIC to operate */
3218 iwl_write32(priv, CSR_RESET, 0);
3219 }
3220
3221
3222 /**
3223 * iwl4965_read_ucode - Read uCode images from disk file.
3224 *
3225 * Copy into buffers for card to fetch via bus-mastering
3226 */
3227 static int iwl4965_read_ucode(struct iwl_priv *priv)
3228 {
3229 struct iwl4965_ucode *ucode;
3230 int ret;
3231 const struct firmware *ucode_raw;
3232 const char *name = priv->cfg->fw_name;
3233 u8 *src;
3234 size_t len;
3235 u32 ver, inst_size, data_size, init_size, init_data_size, boot_size;
3236
3237 /* Ask kernel firmware_class module to get the boot firmware off disk.
3238 * request_firmware() is synchronous, file is in memory on return. */
3239 ret = request_firmware(&ucode_raw, name, &priv->pci_dev->dev);
3240 if (ret < 0) {
3241 IWL_ERROR("%s firmware file req failed: Reason %d\n",
3242 name, ret);
3243 goto error;
3244 }
3245
3246 IWL_DEBUG_INFO("Got firmware '%s' file (%zd bytes) from disk\n",
3247 name, ucode_raw->size);
3248
3249 /* Make sure that we got at least our header! */
3250 if (ucode_raw->size < sizeof(*ucode)) {
3251 IWL_ERROR("File size way too small!\n");
3252 ret = -EINVAL;
3253 goto err_release;
3254 }
3255
3256 /* Data from ucode file: header followed by uCode images */
3257 ucode = (void *)ucode_raw->data;
3258
3259 ver = le32_to_cpu(ucode->ver);
3260 inst_size = le32_to_cpu(ucode->inst_size);
3261 data_size = le32_to_cpu(ucode->data_size);
3262 init_size = le32_to_cpu(ucode->init_size);
3263 init_data_size = le32_to_cpu(ucode->init_data_size);
3264 boot_size = le32_to_cpu(ucode->boot_size);
3265
3266 IWL_DEBUG_INFO("f/w package hdr ucode version = 0x%x\n", ver);
3267 IWL_DEBUG_INFO("f/w package hdr runtime inst size = %u\n",
3268 inst_size);
3269 IWL_DEBUG_INFO("f/w package hdr runtime data size = %u\n",
3270 data_size);
3271 IWL_DEBUG_INFO("f/w package hdr init inst size = %u\n",
3272 init_size);
3273 IWL_DEBUG_INFO("f/w package hdr init data size = %u\n",
3274 init_data_size);
3275 IWL_DEBUG_INFO("f/w package hdr boot inst size = %u\n",
3276 boot_size);
3277
3278 /* Verify size of file vs. image size info in file's header */
3279 if (ucode_raw->size < sizeof(*ucode) +
3280 inst_size + data_size + init_size +
3281 init_data_size + boot_size) {
3282
3283 IWL_DEBUG_INFO("uCode file size %d too small\n",
3284 (int)ucode_raw->size);
3285 ret = -EINVAL;
3286 goto err_release;
3287 }
3288
3289 /* Verify that uCode images will fit in card's SRAM */
3290 if (inst_size > priv->hw_params.max_inst_size) {
3291 IWL_DEBUG_INFO("uCode instr len %d too large to fit in\n",
3292 inst_size);
3293 ret = -EINVAL;
3294 goto err_release;
3295 }
3296
3297 if (data_size > priv->hw_params.max_data_size) {
3298 IWL_DEBUG_INFO("uCode data len %d too large to fit in\n",
3299 data_size);
3300 ret = -EINVAL;
3301 goto err_release;
3302 }
3303 if (init_size > priv->hw_params.max_inst_size) {
3304 IWL_DEBUG_INFO
3305 ("uCode init instr len %d too large to fit in\n",
3306 init_size);
3307 ret = -EINVAL;
3308 goto err_release;
3309 }
3310 if (init_data_size > priv->hw_params.max_data_size) {
3311 IWL_DEBUG_INFO
3312 ("uCode init data len %d too large to fit in\n",
3313 init_data_size);
3314 ret = -EINVAL;
3315 goto err_release;
3316 }
3317 if (boot_size > priv->hw_params.max_bsm_size) {
3318 IWL_DEBUG_INFO
3319 ("uCode boot instr len %d too large to fit in\n",
3320 boot_size);
3321 ret = -EINVAL;
3322 goto err_release;
3323 }
3324
3325 /* Allocate ucode buffers for card's bus-master loading ... */
3326
3327 /* Runtime instructions and 2 copies of data:
3328 * 1) unmodified from disk
3329 * 2) backup cache for save/restore during power-downs */
3330 priv->ucode_code.len = inst_size;
3331 iwl_alloc_fw_desc(priv->pci_dev, &priv->ucode_code);
3332
3333 priv->ucode_data.len = data_size;
3334 iwl_alloc_fw_desc(priv->pci_dev, &priv->ucode_data);
3335
3336 priv->ucode_data_backup.len = data_size;
3337 iwl_alloc_fw_desc(priv->pci_dev, &priv->ucode_data_backup);
3338
3339 /* Initialization instructions and data */
3340 if (init_size && init_data_size) {
3341 priv->ucode_init.len = init_size;
3342 iwl_alloc_fw_desc(priv->pci_dev, &priv->ucode_init);
3343
3344 priv->ucode_init_data.len = init_data_size;
3345 iwl_alloc_fw_desc(priv->pci_dev, &priv->ucode_init_data);
3346
3347 if (!priv->ucode_init.v_addr || !priv->ucode_init_data.v_addr)
3348 goto err_pci_alloc;
3349 }
3350
3351 /* Bootstrap (instructions only, no data) */
3352 if (boot_size) {
3353 priv->ucode_boot.len = boot_size;
3354 iwl_alloc_fw_desc(priv->pci_dev, &priv->ucode_boot);
3355
3356 if (!priv->ucode_boot.v_addr)
3357 goto err_pci_alloc;
3358 }
3359
3360 /* Copy images into buffers for card's bus-master reads ... */
3361
3362 /* Runtime instructions (first block of data in file) */
3363 src = &ucode->data[0];
3364 len = priv->ucode_code.len;
3365 IWL_DEBUG_INFO("Copying (but not loading) uCode instr len %Zd\n", len);
3366 memcpy(priv->ucode_code.v_addr, src, len);
3367 IWL_DEBUG_INFO("uCode instr buf vaddr = 0x%p, paddr = 0x%08x\n",
3368 priv->ucode_code.v_addr, (u32)priv->ucode_code.p_addr);
3369
3370 /* Runtime data (2nd block)
3371 * NOTE: Copy into backup buffer will be done in iwl4965_up() */
3372 src = &ucode->data[inst_size];
3373 len = priv->ucode_data.len;
3374 IWL_DEBUG_INFO("Copying (but not loading) uCode data len %Zd\n", len);
3375 memcpy(priv->ucode_data.v_addr, src, len);
3376 memcpy(priv->ucode_data_backup.v_addr, src, len);
3377
3378 /* Initialization instructions (3rd block) */
3379 if (init_size) {
3380 src = &ucode->data[inst_size + data_size];
3381 len = priv->ucode_init.len;
3382 IWL_DEBUG_INFO("Copying (but not loading) init instr len %Zd\n",
3383 len);
3384 memcpy(priv->ucode_init.v_addr, src, len);
3385 }
3386
3387 /* Initialization data (4th block) */
3388 if (init_data_size) {
3389 src = &ucode->data[inst_size + data_size + init_size];
3390 len = priv->ucode_init_data.len;
3391 IWL_DEBUG_INFO("Copying (but not loading) init data len %Zd\n",
3392 len);
3393 memcpy(priv->ucode_init_data.v_addr, src, len);
3394 }
3395
3396 /* Bootstrap instructions (5th block) */
3397 src = &ucode->data[inst_size + data_size + init_size + init_data_size];
3398 len = priv->ucode_boot.len;
3399 IWL_DEBUG_INFO("Copying (but not loading) boot instr len %Zd\n", len);
3400 memcpy(priv->ucode_boot.v_addr, src, len);
3401
3402 /* We have our copies now, allow OS release its copies */
3403 release_firmware(ucode_raw);
3404 return 0;
3405
3406 err_pci_alloc:
3407 IWL_ERROR("failed to allocate pci memory\n");
3408 ret = -ENOMEM;
3409 iwl4965_dealloc_ucode_pci(priv);
3410
3411 err_release:
3412 release_firmware(ucode_raw);
3413
3414 error:
3415 return ret;
3416 }
3417
3418 /**
3419 * iwl4965_alive_start - called after REPLY_ALIVE notification received
3420 * from protocol/runtime uCode (initialization uCode's
3421 * Alive gets handled by iwl4965_init_alive_start()).
3422 */
3423 static void iwl4965_alive_start(struct iwl_priv *priv)
3424 {
3425 int ret = 0;
3426
3427 IWL_DEBUG_INFO("Runtime Alive received.\n");
3428
3429 if (priv->card_alive.is_valid != UCODE_VALID_OK) {
3430 /* We had an error bringing up the hardware, so take it
3431 * all the way back down so we can try again */
3432 IWL_DEBUG_INFO("Alive failed.\n");
3433 goto restart;
3434 }
3435
3436 /* Initialize uCode has loaded Runtime uCode ... verify inst image.
3437 * This is a paranoid check, because we would not have gotten the
3438 * "runtime" alive if code weren't properly loaded. */
3439 if (iwl_verify_ucode(priv)) {
3440 /* Runtime instruction load was bad;
3441 * take it all the way back down so we can try again */
3442 IWL_DEBUG_INFO("Bad runtime uCode load.\n");
3443 goto restart;
3444 }
3445
3446 iwlcore_clear_stations_table(priv);
3447
3448 ret = priv->cfg->ops->lib->alive_notify(priv);
3449 if (ret) {
3450 IWL_WARNING("Could not complete ALIVE transition [ntf]: %d\n",
3451 ret);
3452 goto restart;
3453 }
3454
3455 /* After the ALIVE response, we can send host commands to 4965 uCode */
3456 set_bit(STATUS_ALIVE, &priv->status);
3457
3458 /* Clear out the uCode error bit if it is set */
3459 clear_bit(STATUS_FW_ERROR, &priv->status);
3460
3461 if (iwl_is_rfkill(priv))
3462 return;
3463
3464 ieee80211_start_queues(priv->hw);
3465
3466 priv->active_rate = priv->rates_mask;
3467 priv->active_rate_basic = priv->rates_mask & IWL_BASIC_RATES_MASK;
3468
3469 if (iwl_is_associated(priv)) {
3470 struct iwl_rxon_cmd *active_rxon =
3471 (struct iwl_rxon_cmd *)&priv->active_rxon;
3472
3473 memcpy(&priv->staging_rxon, &priv->active_rxon,
3474 sizeof(priv->staging_rxon));
3475 active_rxon->filter_flags &= ~RXON_FILTER_ASSOC_MSK;
3476 } else {
3477 /* Initialize our rx_config data */
3478 iwl4965_connection_init_rx_config(priv);
3479 memcpy(priv->staging_rxon.node_addr, priv->mac_addr, ETH_ALEN);
3480 }
3481
3482 /* Configure Bluetooth device coexistence support */
3483 iwl4965_send_bt_config(priv);
3484
3485 /* Configure the adapter for unassociated operation */
3486 iwl4965_commit_rxon(priv);
3487
3488 /* At this point, the NIC is initialized and operational */
3489 priv->notif_missed_beacons = 0;
3490
3491 iwl4965_rf_kill_ct_config(priv);
3492
3493 iwl_leds_register(priv);
3494
3495 IWL_DEBUG_INFO("ALIVE processing complete.\n");
3496 set_bit(STATUS_READY, &priv->status);
3497 wake_up_interruptible(&priv->wait_command_queue);
3498
3499 if (priv->error_recovering)
3500 iwl4965_error_recovery(priv);
3501
3502 iwlcore_low_level_notify(priv, IWLCORE_START_EVT);
3503 ieee80211_notify_mac(priv->hw, IEEE80211_NOTIFY_RE_ASSOC);
3504 return;
3505
3506 restart:
3507 queue_work(priv->workqueue, &priv->restart);
3508 }
3509
3510 static void iwl4965_cancel_deferred_work(struct iwl_priv *priv);
3511
3512 static void __iwl4965_down(struct iwl_priv *priv)
3513 {
3514 unsigned long flags;
3515 int exit_pending = test_bit(STATUS_EXIT_PENDING, &priv->status);
3516 struct ieee80211_conf *conf = NULL;
3517
3518 IWL_DEBUG_INFO(DRV_NAME " is going down\n");
3519
3520 conf = ieee80211_get_hw_conf(priv->hw);
3521
3522 if (!exit_pending)
3523 set_bit(STATUS_EXIT_PENDING, &priv->status);
3524
3525 iwl_leds_unregister(priv);
3526
3527 iwlcore_low_level_notify(priv, IWLCORE_STOP_EVT);
3528
3529 iwlcore_clear_stations_table(priv);
3530
3531 /* Unblock any waiting calls */
3532 wake_up_interruptible_all(&priv->wait_command_queue);
3533
3534 /* Wipe out the EXIT_PENDING status bit if we are not actually
3535 * exiting the module */
3536 if (!exit_pending)
3537 clear_bit(STATUS_EXIT_PENDING, &priv->status);
3538
3539 /* stop and reset the on-board processor */
3540 iwl_write32(priv, CSR_RESET, CSR_RESET_REG_FLAG_NEVO_RESET);
3541
3542 /* tell the device to stop sending interrupts */
3543 spin_lock_irqsave(&priv->lock, flags);
3544 iwl4965_disable_interrupts(priv);
3545 spin_unlock_irqrestore(&priv->lock, flags);
3546 iwl_synchronize_irq(priv);
3547
3548 if (priv->mac80211_registered)
3549 ieee80211_stop_queues(priv->hw);
3550
3551 /* If we have not previously called iwl4965_init() then
3552 * clear all bits but the RF Kill and SUSPEND bits and return */
3553 if (!iwl_is_init(priv)) {
3554 priv->status = test_bit(STATUS_RF_KILL_HW, &priv->status) <<
3555 STATUS_RF_KILL_HW |
3556 test_bit(STATUS_RF_KILL_SW, &priv->status) <<
3557 STATUS_RF_KILL_SW |
3558 test_bit(STATUS_GEO_CONFIGURED, &priv->status) <<
3559 STATUS_GEO_CONFIGURED |
3560 test_bit(STATUS_IN_SUSPEND, &priv->status) <<
3561 STATUS_IN_SUSPEND;
3562 goto exit;
3563 }
3564
3565 /* ...otherwise clear out all the status bits but the RF Kill and
3566 * SUSPEND bits and continue taking the NIC down. */
3567 priv->status &= test_bit(STATUS_RF_KILL_HW, &priv->status) <<
3568 STATUS_RF_KILL_HW |
3569 test_bit(STATUS_RF_KILL_SW, &priv->status) <<
3570 STATUS_RF_KILL_SW |
3571 test_bit(STATUS_GEO_CONFIGURED, &priv->status) <<
3572 STATUS_GEO_CONFIGURED |
3573 test_bit(STATUS_IN_SUSPEND, &priv->status) <<
3574 STATUS_IN_SUSPEND |
3575 test_bit(STATUS_FW_ERROR, &priv->status) <<
3576 STATUS_FW_ERROR;
3577
3578 spin_lock_irqsave(&priv->lock, flags);
3579 iwl_clear_bit(priv, CSR_GP_CNTRL,
3580 CSR_GP_CNTRL_REG_FLAG_MAC_ACCESS_REQ);
3581 spin_unlock_irqrestore(&priv->lock, flags);
3582
3583 iwl4965_hw_txq_ctx_stop(priv);
3584 iwl4965_hw_rxq_stop(priv);
3585
3586 spin_lock_irqsave(&priv->lock, flags);
3587 if (!iwl_grab_nic_access(priv)) {
3588 iwl_write_prph(priv, APMG_CLK_DIS_REG,
3589 APMG_CLK_VAL_DMA_CLK_RQT);
3590 iwl_release_nic_access(priv);
3591 }
3592 spin_unlock_irqrestore(&priv->lock, flags);
3593
3594 udelay(5);
3595
3596 iwl4965_hw_nic_stop_master(priv);
3597 iwl_set_bit(priv, CSR_RESET, CSR_RESET_REG_FLAG_SW_RESET);
3598 iwl4965_hw_nic_reset(priv);
3599 priv->cfg->ops->lib->free_shared_mem(priv);
3600
3601 exit:
3602 memset(&priv->card_alive, 0, sizeof(struct iwl4965_alive_resp));
3603
3604 if (priv->ibss_beacon)
3605 dev_kfree_skb(priv->ibss_beacon);
3606 priv->ibss_beacon = NULL;
3607
3608 /* clear out any free frames */
3609 iwl_clear_free_frames(priv);
3610 }
3611
3612 static void iwl4965_down(struct iwl_priv *priv)
3613 {
3614 mutex_lock(&priv->mutex);
3615 __iwl4965_down(priv);
3616 mutex_unlock(&priv->mutex);
3617
3618 iwl4965_cancel_deferred_work(priv);
3619 }
3620
3621 #define MAX_HW_RESTARTS 5
3622
3623 static int __iwl4965_up(struct iwl_priv *priv)
3624 {
3625 int i;
3626 int ret;
3627
3628 if (test_bit(STATUS_EXIT_PENDING, &priv->status)) {
3629 IWL_WARNING("Exit pending; will not bring the NIC up\n");
3630 return -EIO;
3631 }
3632
3633 if (test_bit(STATUS_RF_KILL_SW, &priv->status)) {
3634 IWL_WARNING("Radio disabled by SW RF kill (module "
3635 "parameter)\n");
3636 iwl_rfkill_set_hw_state(priv);
3637 return -ENODEV;
3638 }
3639
3640 if (!priv->ucode_data_backup.v_addr || !priv->ucode_data.v_addr) {
3641 IWL_ERROR("ucode not available for device bringup\n");
3642 return -EIO;
3643 }
3644
3645 /* If platform's RF_KILL switch is NOT set to KILL */
3646 if (iwl_read32(priv, CSR_GP_CNTRL) &
3647 CSR_GP_CNTRL_REG_FLAG_HW_RF_KILL_SW)
3648 clear_bit(STATUS_RF_KILL_HW, &priv->status);
3649 else {
3650 set_bit(STATUS_RF_KILL_HW, &priv->status);
3651 if (!test_bit(STATUS_IN_SUSPEND, &priv->status)) {
3652 iwl_rfkill_set_hw_state(priv);
3653 IWL_WARNING("Radio disabled by HW RF Kill switch\n");
3654 return -ENODEV;
3655 }
3656 }
3657
3658 iwl_rfkill_set_hw_state(priv);
3659 iwl_write32(priv, CSR_INT, 0xFFFFFFFF);
3660
3661 ret = priv->cfg->ops->lib->alloc_shared_mem(priv);
3662 if (ret) {
3663 IWL_ERROR("Unable to allocate shared memory\n");
3664 return ret;
3665 }
3666
3667 ret = iwl_hw_nic_init(priv);
3668 if (ret) {
3669 IWL_ERROR("Unable to init nic\n");
3670 return ret;
3671 }
3672
3673 /* make sure rfkill handshake bits are cleared */
3674 iwl_write32(priv, CSR_UCODE_DRV_GP1_CLR, CSR_UCODE_SW_BIT_RFKILL);
3675 iwl_write32(priv, CSR_UCODE_DRV_GP1_CLR,
3676 CSR_UCODE_DRV_GP1_BIT_CMD_BLOCKED);
3677
3678 /* clear (again), then enable host interrupts */
3679 iwl_write32(priv, CSR_INT, 0xFFFFFFFF);
3680 iwl4965_enable_interrupts(priv);
3681
3682 /* really make sure rfkill handshake bits are cleared */
3683 iwl_write32(priv, CSR_UCODE_DRV_GP1_CLR, CSR_UCODE_SW_BIT_RFKILL);
3684 iwl_write32(priv, CSR_UCODE_DRV_GP1_CLR, CSR_UCODE_SW_BIT_RFKILL);
3685
3686 /* Copy original ucode data image from disk into backup cache.
3687 * This will be used to initialize the on-board processor's
3688 * data SRAM for a clean start when the runtime program first loads. */
3689 memcpy(priv->ucode_data_backup.v_addr, priv->ucode_data.v_addr,
3690 priv->ucode_data.len);
3691
3692 /* We return success when we resume from suspend and rf_kill is on. */
3693 if (test_bit(STATUS_RF_KILL_HW, &priv->status))
3694 return 0;
3695
3696 for (i = 0; i < MAX_HW_RESTARTS; i++) {
3697
3698 iwlcore_clear_stations_table(priv);
3699
3700 /* load bootstrap state machine,
3701 * load bootstrap program into processor's memory,
3702 * prepare to load the "initialize" uCode */
3703 ret = priv->cfg->ops->lib->load_ucode(priv);
3704
3705 if (ret) {
3706 IWL_ERROR("Unable to set up bootstrap uCode: %d\n", ret);
3707 continue;
3708 }
3709
3710 /* start card; "initialize" will load runtime ucode */
3711 iwl4965_nic_start(priv);
3712
3713 IWL_DEBUG_INFO(DRV_NAME " is coming up\n");
3714
3715 return 0;
3716 }
3717
3718 set_bit(STATUS_EXIT_PENDING, &priv->status);
3719 __iwl4965_down(priv);
3720
3721 /* tried to restart and config the device for as long as our
3722 * patience could withstand */
3723 IWL_ERROR("Unable to initialize device after %d attempts.\n", i);
3724 return -EIO;
3725 }
3726
3727
3728 /*****************************************************************************
3729 *
3730 * Workqueue callbacks
3731 *
3732 *****************************************************************************/
3733
3734 static void iwl4965_bg_init_alive_start(struct work_struct *data)
3735 {
3736 struct iwl_priv *priv =
3737 container_of(data, struct iwl_priv, init_alive_start.work);
3738
3739 if (test_bit(STATUS_EXIT_PENDING, &priv->status))
3740 return;
3741
3742 mutex_lock(&priv->mutex);
3743 priv->cfg->ops->lib->init_alive_start(priv);
3744 mutex_unlock(&priv->mutex);
3745 }
3746
3747 static void iwl4965_bg_alive_start(struct work_struct *data)
3748 {
3749 struct iwl_priv *priv =
3750 container_of(data, struct iwl_priv, alive_start.work);
3751
3752 if (test_bit(STATUS_EXIT_PENDING, &priv->status))
3753 return;
3754
3755 mutex_lock(&priv->mutex);
3756 iwl4965_alive_start(priv);
3757 mutex_unlock(&priv->mutex);
3758 }
3759
3760 static void iwl4965_bg_rf_kill(struct work_struct *work)
3761 {
3762 struct iwl_priv *priv = container_of(work, struct iwl_priv, rf_kill);
3763
3764 wake_up_interruptible(&priv->wait_command_queue);
3765
3766 if (test_bit(STATUS_EXIT_PENDING, &priv->status))
3767 return;
3768
3769 mutex_lock(&priv->mutex);
3770
3771 if (!iwl_is_rfkill(priv)) {
3772 IWL_DEBUG(IWL_DL_RF_KILL,
3773 "HW and/or SW RF Kill no longer active, restarting "
3774 "device\n");
3775 if (!test_bit(STATUS_EXIT_PENDING, &priv->status))
3776 queue_work(priv->workqueue, &priv->restart);
3777 } else {
3778 /* make sure mac80211 stop sending Tx frame */
3779 if (priv->mac80211_registered)
3780 ieee80211_stop_queues(priv->hw);
3781
3782 if (!test_bit(STATUS_RF_KILL_HW, &priv->status))
3783 IWL_DEBUG_RF_KILL("Can not turn radio back on - "
3784 "disabled by SW switch\n");
3785 else
3786 IWL_WARNING("Radio Frequency Kill Switch is On:\n"
3787 "Kill switch must be turned off for "
3788 "wireless networking to work.\n");
3789 }
3790 iwl_rfkill_set_hw_state(priv);
3791
3792 mutex_unlock(&priv->mutex);
3793 }
3794
3795 static void iwl4965_bg_set_monitor(struct work_struct *work)
3796 {
3797 struct iwl_priv *priv = container_of(work,
3798 struct iwl_priv, set_monitor);
3799
3800 IWL_DEBUG(IWL_DL_STATE, "setting monitor mode\n");
3801
3802 mutex_lock(&priv->mutex);
3803
3804 if (!iwl_is_ready(priv))
3805 IWL_DEBUG(IWL_DL_STATE, "leave - not ready\n");
3806 else
3807 if (iwl4965_set_mode(priv, IEEE80211_IF_TYPE_MNTR) != 0)
3808 IWL_ERROR("iwl4965_set_mode() failed\n");
3809
3810 mutex_unlock(&priv->mutex);
3811 }
3812
3813 #define IWL_SCAN_CHECK_WATCHDOG (7 * HZ)
3814
3815 static void iwl4965_bg_scan_check(struct work_struct *data)
3816 {
3817 struct iwl_priv *priv =
3818 container_of(data, struct iwl_priv, scan_check.work);
3819
3820 if (test_bit(STATUS_EXIT_PENDING, &priv->status))
3821 return;
3822
3823 mutex_lock(&priv->mutex);
3824 if (test_bit(STATUS_SCANNING, &priv->status) ||
3825 test_bit(STATUS_SCAN_ABORTING, &priv->status)) {
3826 IWL_DEBUG(IWL_DL_SCAN, "Scan completion watchdog resetting "
3827 "adapter (%dms)\n",
3828 jiffies_to_msecs(IWL_SCAN_CHECK_WATCHDOG));
3829
3830 if (!test_bit(STATUS_EXIT_PENDING, &priv->status))
3831 iwl4965_send_scan_abort(priv);
3832 }
3833 mutex_unlock(&priv->mutex);
3834 }
3835
3836 static void iwl4965_bg_request_scan(struct work_struct *data)
3837 {
3838 struct iwl_priv *priv =
3839 container_of(data, struct iwl_priv, request_scan);
3840 struct iwl_host_cmd cmd = {
3841 .id = REPLY_SCAN_CMD,
3842 .len = sizeof(struct iwl4965_scan_cmd),
3843 .meta.flags = CMD_SIZE_HUGE,
3844 };
3845 struct iwl4965_scan_cmd *scan;
3846 struct ieee80211_conf *conf = NULL;
3847 u16 cmd_len;
3848 enum ieee80211_band band;
3849 u8 direct_mask;
3850 int ret = 0;
3851
3852 conf = ieee80211_get_hw_conf(priv->hw);
3853
3854 mutex_lock(&priv->mutex);
3855
3856 if (!iwl_is_ready(priv)) {
3857 IWL_WARNING("request scan called when driver not ready.\n");
3858 goto done;
3859 }
3860
3861 /* Make sure the scan wasn't cancelled before this queued work
3862 * was given the chance to run... */
3863 if (!test_bit(STATUS_SCANNING, &priv->status))
3864 goto done;
3865
3866 /* This should never be called or scheduled if there is currently
3867 * a scan active in the hardware. */
3868 if (test_bit(STATUS_SCAN_HW, &priv->status)) {
3869 IWL_DEBUG_INFO("Multiple concurrent scan requests in parallel. "
3870 "Ignoring second request.\n");
3871 ret = -EIO;
3872 goto done;
3873 }
3874
3875 if (test_bit(STATUS_EXIT_PENDING, &priv->status)) {
3876 IWL_DEBUG_SCAN("Aborting scan due to device shutdown\n");
3877 goto done;
3878 }
3879
3880 if (test_bit(STATUS_SCAN_ABORTING, &priv->status)) {
3881 IWL_DEBUG_HC("Scan request while abort pending. Queuing.\n");
3882 goto done;
3883 }
3884
3885 if (iwl_is_rfkill(priv)) {
3886 IWL_DEBUG_HC("Aborting scan due to RF Kill activation\n");
3887 goto done;
3888 }
3889
3890 if (!test_bit(STATUS_READY, &priv->status)) {
3891 IWL_DEBUG_HC("Scan request while uninitialized. Queuing.\n");
3892 goto done;
3893 }
3894
3895 if (!priv->scan_bands) {
3896 IWL_DEBUG_HC("Aborting scan due to no requested bands\n");
3897 goto done;
3898 }
3899
3900 if (!priv->scan) {
3901 priv->scan = kmalloc(sizeof(struct iwl4965_scan_cmd) +
3902 IWL_MAX_SCAN_SIZE, GFP_KERNEL);
3903 if (!priv->scan) {
3904 ret = -ENOMEM;
3905 goto done;
3906 }
3907 }
3908 scan = priv->scan;
3909 memset(scan, 0, sizeof(struct iwl4965_scan_cmd) + IWL_MAX_SCAN_SIZE);
3910
3911 scan->quiet_plcp_th = IWL_PLCP_QUIET_THRESH;
3912 scan->quiet_time = IWL_ACTIVE_QUIET_TIME;
3913
3914 if (iwl_is_associated(priv)) {
3915 u16 interval = 0;
3916 u32 extra;
3917 u32 suspend_time = 100;
3918 u32 scan_suspend_time = 100;
3919 unsigned long flags;
3920
3921 IWL_DEBUG_INFO("Scanning while associated...\n");
3922
3923 spin_lock_irqsave(&priv->lock, flags);
3924 interval = priv->beacon_int;
3925 spin_unlock_irqrestore(&priv->lock, flags);
3926
3927 scan->suspend_time = 0;
3928 scan->max_out_time = cpu_to_le32(200 * 1024);
3929 if (!interval)
3930 interval = suspend_time;
3931
3932 extra = (suspend_time / interval) << 22;
3933 scan_suspend_time = (extra |
3934 ((suspend_time % interval) * 1024));
3935 scan->suspend_time = cpu_to_le32(scan_suspend_time);
3936 IWL_DEBUG_SCAN("suspend_time 0x%X beacon interval %d\n",
3937 scan_suspend_time, interval);
3938 }
3939
3940 /* We should add the ability for user to lock to PASSIVE ONLY */
3941 if (priv->one_direct_scan) {
3942 IWL_DEBUG_SCAN
3943 ("Kicking off one direct scan for '%s'\n",
3944 iwl4965_escape_essid(priv->direct_ssid,
3945 priv->direct_ssid_len));
3946 scan->direct_scan[0].id = WLAN_EID_SSID;
3947 scan->direct_scan[0].len = priv->direct_ssid_len;
3948 memcpy(scan->direct_scan[0].ssid,
3949 priv->direct_ssid, priv->direct_ssid_len);
3950 direct_mask = 1;
3951 } else if (!iwl_is_associated(priv) && priv->essid_len) {
3952 IWL_DEBUG_SCAN
3953 ("Kicking off one direct scan for '%s' when not associated\n",
3954 iwl4965_escape_essid(priv->essid, priv->essid_len));
3955 scan->direct_scan[0].id = WLAN_EID_SSID;
3956 scan->direct_scan[0].len = priv->essid_len;
3957 memcpy(scan->direct_scan[0].ssid, priv->essid, priv->essid_len);
3958 direct_mask = 1;
3959 } else {
3960 IWL_DEBUG_SCAN("Kicking off one indirect scan.\n");
3961 direct_mask = 0;
3962 }
3963
3964 scan->tx_cmd.tx_flags = TX_CMD_FLG_SEQ_CTL_MSK;
3965 scan->tx_cmd.sta_id = priv->hw_params.bcast_sta_id;
3966 scan->tx_cmd.stop_time.life_time = TX_CMD_LIFE_TIME_INFINITE;
3967
3968
3969 switch (priv->scan_bands) {
3970 case 2:
3971 scan->flags = RXON_FLG_BAND_24G_MSK | RXON_FLG_AUTO_DETECT_MSK;
3972 scan->tx_cmd.rate_n_flags =
3973 iwl4965_hw_set_rate_n_flags(IWL_RATE_1M_PLCP,
3974 RATE_MCS_ANT_B_MSK|RATE_MCS_CCK_MSK);
3975
3976 scan->good_CRC_th = 0;
3977 band = IEEE80211_BAND_2GHZ;
3978 break;
3979
3980 case 1:
3981 scan->tx_cmd.rate_n_flags =
3982 iwl4965_hw_set_rate_n_flags(IWL_RATE_6M_PLCP,
3983 RATE_MCS_ANT_B_MSK);
3984 scan->good_CRC_th = IWL_GOOD_CRC_TH;
3985 band = IEEE80211_BAND_5GHZ;
3986 break;
3987
3988 default:
3989 IWL_WARNING("Invalid scan band count\n");
3990 goto done;
3991 }
3992
3993 /* We don't build a direct scan probe request; the uCode will do
3994 * that based on the direct_mask added to each channel entry */
3995 cmd_len = iwl4965_fill_probe_req(priv, band,
3996 (struct ieee80211_mgmt *)scan->data,
3997 IWL_MAX_SCAN_SIZE - sizeof(*scan), 0);
3998
3999 scan->tx_cmd.len = cpu_to_le16(cmd_len);
4000 /* select Rx chains */
4001
4002 /* Force use of chains B and C (0x6) for scan Rx.
4003 * Avoid A (0x1) because of its off-channel reception on A-band.
4004 * MIMO is not used here, but value is required to make uCode happy. */
4005 scan->rx_chain = RXON_RX_CHAIN_DRIVER_FORCE_MSK |
4006 cpu_to_le16((0x7 << RXON_RX_CHAIN_VALID_POS) |
4007 (0x6 << RXON_RX_CHAIN_FORCE_SEL_POS) |
4008 (0x7 << RXON_RX_CHAIN_FORCE_MIMO_SEL_POS));
4009
4010 if (priv->iw_mode == IEEE80211_IF_TYPE_MNTR)
4011 scan->filter_flags = RXON_FILTER_PROMISC_MSK;
4012
4013 if (direct_mask)
4014 scan->channel_count =
4015 iwl4965_get_channels_for_scan(
4016 priv, band, 1, /* active */
4017 direct_mask,
4018 (void *)&scan->data[le16_to_cpu(scan->tx_cmd.len)]);
4019 else
4020 scan->channel_count =
4021 iwl4965_get_channels_for_scan(
4022 priv, band, 0, /* passive */
4023 direct_mask,
4024 (void *)&scan->data[le16_to_cpu(scan->tx_cmd.len)]);
4025
4026 scan->filter_flags |= (RXON_FILTER_ACCEPT_GRP_MSK |
4027 RXON_FILTER_BCON_AWARE_MSK);
4028 cmd.len += le16_to_cpu(scan->tx_cmd.len) +
4029 scan->channel_count * sizeof(struct iwl4965_scan_channel);
4030 cmd.data = scan;
4031 scan->len = cpu_to_le16(cmd.len);
4032
4033 set_bit(STATUS_SCAN_HW, &priv->status);
4034 ret = iwl_send_cmd_sync(priv, &cmd);
4035 if (ret)
4036 goto done;
4037
4038 queue_delayed_work(priv->workqueue, &priv->scan_check,
4039 IWL_SCAN_CHECK_WATCHDOG);
4040
4041 mutex_unlock(&priv->mutex);
4042 return;
4043
4044 done:
4045 /* inform mac80211 scan aborted */
4046 queue_work(priv->workqueue, &priv->scan_completed);
4047 mutex_unlock(&priv->mutex);
4048 }
4049
4050 static void iwl4965_bg_up(struct work_struct *data)
4051 {
4052 struct iwl_priv *priv = container_of(data, struct iwl_priv, up);
4053
4054 if (test_bit(STATUS_EXIT_PENDING, &priv->status))
4055 return;
4056
4057 mutex_lock(&priv->mutex);
4058 __iwl4965_up(priv);
4059 mutex_unlock(&priv->mutex);
4060 }
4061
4062 static void iwl4965_bg_restart(struct work_struct *data)
4063 {
4064 struct iwl_priv *priv = container_of(data, struct iwl_priv, restart);
4065
4066 if (test_bit(STATUS_EXIT_PENDING, &priv->status))
4067 return;
4068
4069 iwl4965_down(priv);
4070 queue_work(priv->workqueue, &priv->up);
4071 }
4072
4073 static void iwl4965_bg_rx_replenish(struct work_struct *data)
4074 {
4075 struct iwl_priv *priv =
4076 container_of(data, struct iwl_priv, rx_replenish);
4077
4078 if (test_bit(STATUS_EXIT_PENDING, &priv->status))
4079 return;
4080
4081 mutex_lock(&priv->mutex);
4082 iwl_rx_replenish(priv);
4083 mutex_unlock(&priv->mutex);
4084 }
4085
4086 #define IWL_DELAY_NEXT_SCAN (HZ*2)
4087
4088 static void iwl4965_post_associate(struct iwl_priv *priv)
4089 {
4090 struct ieee80211_conf *conf = NULL;
4091 int ret = 0;
4092 DECLARE_MAC_BUF(mac);
4093
4094 if (priv->iw_mode == IEEE80211_IF_TYPE_AP) {
4095 IWL_ERROR("%s Should not be called in AP mode\n", __FUNCTION__);
4096 return;
4097 }
4098
4099 IWL_DEBUG_ASSOC("Associated as %d to: %s\n",
4100 priv->assoc_id,
4101 print_mac(mac, priv->active_rxon.bssid_addr));
4102
4103
4104 if (test_bit(STATUS_EXIT_PENDING, &priv->status))
4105 return;
4106
4107
4108 if (!priv->vif || !priv->is_open)
4109 return;
4110
4111 iwl4965_scan_cancel_timeout(priv, 200);
4112
4113 conf = ieee80211_get_hw_conf(priv->hw);
4114
4115 priv->staging_rxon.filter_flags &= ~RXON_FILTER_ASSOC_MSK;
4116 iwl4965_commit_rxon(priv);
4117
4118 memset(&priv->rxon_timing, 0, sizeof(struct iwl4965_rxon_time_cmd));
4119 iwl4965_setup_rxon_timing(priv);
4120 ret = iwl_send_cmd_pdu(priv, REPLY_RXON_TIMING,
4121 sizeof(priv->rxon_timing), &priv->rxon_timing);
4122 if (ret)
4123 IWL_WARNING("REPLY_RXON_TIMING failed - "
4124 "Attempting to continue.\n");
4125
4126 priv->staging_rxon.filter_flags |= RXON_FILTER_ASSOC_MSK;
4127
4128 #ifdef CONFIG_IWL4965_HT
4129 if (priv->current_ht_config.is_ht)
4130 iwl_set_rxon_ht(priv, &priv->current_ht_config);
4131 #endif /* CONFIG_IWL4965_HT*/
4132 iwl_set_rxon_chain(priv);
4133 priv->staging_rxon.assoc_id = cpu_to_le16(priv->assoc_id);
4134
4135 IWL_DEBUG_ASSOC("assoc id %d beacon interval %d\n",
4136 priv->assoc_id, priv->beacon_int);
4137
4138 if (priv->assoc_capability & WLAN_CAPABILITY_SHORT_PREAMBLE)
4139 priv->staging_rxon.flags |= RXON_FLG_SHORT_PREAMBLE_MSK;
4140 else
4141 priv->staging_rxon.flags &= ~RXON_FLG_SHORT_PREAMBLE_MSK;
4142
4143 if (priv->staging_rxon.flags & RXON_FLG_BAND_24G_MSK) {
4144 if (priv->assoc_capability & WLAN_CAPABILITY_SHORT_SLOT_TIME)
4145 priv->staging_rxon.flags |= RXON_FLG_SHORT_SLOT_MSK;
4146 else
4147 priv->staging_rxon.flags &= ~RXON_FLG_SHORT_SLOT_MSK;
4148
4149 if (priv->iw_mode == IEEE80211_IF_TYPE_IBSS)
4150 priv->staging_rxon.flags &= ~RXON_FLG_SHORT_SLOT_MSK;
4151
4152 }
4153
4154 iwl4965_commit_rxon(priv);
4155
4156 switch (priv->iw_mode) {
4157 case IEEE80211_IF_TYPE_STA:
4158 iwl4965_rate_scale_init(priv->hw, IWL_AP_ID);
4159 break;
4160
4161 case IEEE80211_IF_TYPE_IBSS:
4162
4163 /* clear out the station table */
4164 iwlcore_clear_stations_table(priv);
4165
4166 iwl_rxon_add_station(priv, iwl_bcast_addr, 0);
4167 iwl_rxon_add_station(priv, priv->bssid, 0);
4168 iwl4965_rate_scale_init(priv->hw, IWL_STA_ID);
4169 iwl4965_send_beacon_cmd(priv);
4170
4171 break;
4172
4173 default:
4174 IWL_ERROR("%s Should not be called in %d mode\n",
4175 __FUNCTION__, priv->iw_mode);
4176 break;
4177 }
4178
4179 iwl4965_sequence_reset(priv);
4180
4181 /* Enable Rx differential gain and sensitivity calibrations */
4182 iwl_chain_noise_reset(priv);
4183 priv->start_calib = 1;
4184
4185 if (priv->iw_mode == IEEE80211_IF_TYPE_IBSS)
4186 priv->assoc_station_added = 1;
4187
4188 iwl4965_activate_qos(priv, 0);
4189
4190 iwl_power_update_mode(priv, 0);
4191 /* we have just associated, don't start scan too early */
4192 priv->next_scan_jiffies = jiffies + IWL_DELAY_NEXT_SCAN;
4193 }
4194
4195
4196 static void iwl4965_bg_post_associate(struct work_struct *data)
4197 {
4198 struct iwl_priv *priv = container_of(data, struct iwl_priv,
4199 post_associate.work);
4200
4201 mutex_lock(&priv->mutex);
4202 iwl4965_post_associate(priv);
4203 mutex_unlock(&priv->mutex);
4204
4205 }
4206
4207 static void iwl4965_bg_abort_scan(struct work_struct *work)
4208 {
4209 struct iwl_priv *priv = container_of(work, struct iwl_priv, abort_scan);
4210
4211 if (!iwl_is_ready(priv))
4212 return;
4213
4214 mutex_lock(&priv->mutex);
4215
4216 set_bit(STATUS_SCAN_ABORTING, &priv->status);
4217 iwl4965_send_scan_abort(priv);
4218
4219 mutex_unlock(&priv->mutex);
4220 }
4221
4222 static int iwl4965_mac_config(struct ieee80211_hw *hw, struct ieee80211_conf *conf);
4223
4224 static void iwl4965_bg_scan_completed(struct work_struct *work)
4225 {
4226 struct iwl_priv *priv =
4227 container_of(work, struct iwl_priv, scan_completed);
4228
4229 IWL_DEBUG(IWL_DL_SCAN, "SCAN complete scan\n");
4230
4231 if (test_bit(STATUS_EXIT_PENDING, &priv->status))
4232 return;
4233
4234 if (test_bit(STATUS_CONF_PENDING, &priv->status))
4235 iwl4965_mac_config(priv->hw, ieee80211_get_hw_conf(priv->hw));
4236
4237 ieee80211_scan_completed(priv->hw);
4238
4239 /* Since setting the TXPOWER may have been deferred while
4240 * performing the scan, fire one off */
4241 mutex_lock(&priv->mutex);
4242 iwl4965_hw_reg_send_txpower(priv);
4243 mutex_unlock(&priv->mutex);
4244 }
4245
4246 /*****************************************************************************
4247 *
4248 * mac80211 entry point functions
4249 *
4250 *****************************************************************************/
4251
4252 #define UCODE_READY_TIMEOUT (2 * HZ)
4253
4254 static int iwl4965_mac_start(struct ieee80211_hw *hw)
4255 {
4256 struct iwl_priv *priv = hw->priv;
4257 int ret;
4258
4259 IWL_DEBUG_MAC80211("enter\n");
4260
4261 if (pci_enable_device(priv->pci_dev)) {
4262 IWL_ERROR("Fail to pci_enable_device\n");
4263 return -ENODEV;
4264 }
4265 pci_restore_state(priv->pci_dev);
4266 pci_enable_msi(priv->pci_dev);
4267
4268 ret = request_irq(priv->pci_dev->irq, iwl4965_isr, IRQF_SHARED,
4269 DRV_NAME, priv);
4270 if (ret) {
4271 IWL_ERROR("Error allocating IRQ %d\n", priv->pci_dev->irq);
4272 goto out_disable_msi;
4273 }
4274
4275 /* we should be verifying the device is ready to be opened */
4276 mutex_lock(&priv->mutex);
4277
4278 memset(&priv->staging_rxon, 0, sizeof(struct iwl_rxon_cmd));
4279 /* fetch ucode file from disk, alloc and copy to bus-master buffers ...
4280 * ucode filename and max sizes are card-specific. */
4281
4282 if (!priv->ucode_code.len) {
4283 ret = iwl4965_read_ucode(priv);
4284 if (ret) {
4285 IWL_ERROR("Could not read microcode: %d\n", ret);
4286 mutex_unlock(&priv->mutex);
4287 goto out_release_irq;
4288 }
4289 }
4290
4291 ret = __iwl4965_up(priv);
4292
4293 mutex_unlock(&priv->mutex);
4294
4295 if (ret)
4296 goto out_release_irq;
4297
4298 IWL_DEBUG_INFO("Start UP work done.\n");
4299
4300 if (test_bit(STATUS_IN_SUSPEND, &priv->status))
4301 return 0;
4302
4303 /* Wait for START_ALIVE from ucode. Otherwise callbacks from
4304 * mac80211 will not be run successfully. */
4305 ret = wait_event_interruptible_timeout(priv->wait_command_queue,
4306 test_bit(STATUS_READY, &priv->status),
4307 UCODE_READY_TIMEOUT);
4308 if (!ret) {
4309 if (!test_bit(STATUS_READY, &priv->status)) {
4310 IWL_ERROR("Wait for START_ALIVE timeout after %dms.\n",
4311 jiffies_to_msecs(UCODE_READY_TIMEOUT));
4312 ret = -ETIMEDOUT;
4313 goto out_release_irq;
4314 }
4315 }
4316
4317 priv->is_open = 1;
4318 IWL_DEBUG_MAC80211("leave\n");
4319 return 0;
4320
4321 out_release_irq:
4322 free_irq(priv->pci_dev->irq, priv);
4323 out_disable_msi:
4324 pci_disable_msi(priv->pci_dev);
4325 pci_disable_device(priv->pci_dev);
4326 priv->is_open = 0;
4327 IWL_DEBUG_MAC80211("leave - failed\n");
4328 return ret;
4329 }
4330
4331 static void iwl4965_mac_stop(struct ieee80211_hw *hw)
4332 {
4333 struct iwl_priv *priv = hw->priv;
4334
4335 IWL_DEBUG_MAC80211("enter\n");
4336
4337 if (!priv->is_open) {
4338 IWL_DEBUG_MAC80211("leave - skip\n");
4339 return;
4340 }
4341
4342 priv->is_open = 0;
4343
4344 if (iwl_is_ready_rf(priv)) {
4345 /* stop mac, cancel any scan request and clear
4346 * RXON_FILTER_ASSOC_MSK BIT
4347 */
4348 mutex_lock(&priv->mutex);
4349 iwl4965_scan_cancel_timeout(priv, 100);
4350 cancel_delayed_work(&priv->post_associate);
4351 mutex_unlock(&priv->mutex);
4352 }
4353
4354 iwl4965_down(priv);
4355
4356 flush_workqueue(priv->workqueue);
4357 free_irq(priv->pci_dev->irq, priv);
4358 pci_disable_msi(priv->pci_dev);
4359 pci_save_state(priv->pci_dev);
4360 pci_disable_device(priv->pci_dev);
4361
4362 IWL_DEBUG_MAC80211("leave\n");
4363 }
4364
4365 static int iwl4965_mac_tx(struct ieee80211_hw *hw, struct sk_buff *skb,
4366 struct ieee80211_tx_control *ctl)
4367 {
4368 struct iwl_priv *priv = hw->priv;
4369
4370 IWL_DEBUG_MAC80211("enter\n");
4371
4372 if (priv->iw_mode == IEEE80211_IF_TYPE_MNTR) {
4373 IWL_DEBUG_MAC80211("leave - monitor\n");
4374 return -1;
4375 }
4376
4377 IWL_DEBUG_TX("dev->xmit(%d bytes) at rate 0x%02x\n", skb->len,
4378 ctl->tx_rate->bitrate);
4379
4380 if (iwl_tx_skb(priv, skb, ctl))
4381 dev_kfree_skb_any(skb);
4382
4383 IWL_DEBUG_MAC80211("leave\n");
4384 return 0;
4385 }
4386
4387 static int iwl4965_mac_add_interface(struct ieee80211_hw *hw,
4388 struct ieee80211_if_init_conf *conf)
4389 {
4390 struct iwl_priv *priv = hw->priv;
4391 unsigned long flags;
4392 DECLARE_MAC_BUF(mac);
4393
4394 IWL_DEBUG_MAC80211("enter: type %d\n", conf->type);
4395
4396 if (priv->vif) {
4397 IWL_DEBUG_MAC80211("leave - vif != NULL\n");
4398 return -EOPNOTSUPP;
4399 }
4400
4401 spin_lock_irqsave(&priv->lock, flags);
4402 priv->vif = conf->vif;
4403
4404 spin_unlock_irqrestore(&priv->lock, flags);
4405
4406 mutex_lock(&priv->mutex);
4407
4408 if (conf->mac_addr) {
4409 IWL_DEBUG_MAC80211("Set %s\n", print_mac(mac, conf->mac_addr));
4410 memcpy(priv->mac_addr, conf->mac_addr, ETH_ALEN);
4411 }
4412
4413 if (iwl_is_ready(priv))
4414 iwl4965_set_mode(priv, conf->type);
4415
4416 mutex_unlock(&priv->mutex);
4417
4418 IWL_DEBUG_MAC80211("leave\n");
4419 return 0;
4420 }
4421
4422 /**
4423 * iwl4965_mac_config - mac80211 config callback
4424 *
4425 * We ignore conf->flags & IEEE80211_CONF_SHORT_SLOT_TIME since it seems to
4426 * be set inappropriately and the driver currently sets the hardware up to
4427 * use it whenever needed.
4428 */
4429 static int iwl4965_mac_config(struct ieee80211_hw *hw, struct ieee80211_conf *conf)
4430 {
4431 struct iwl_priv *priv = hw->priv;
4432 const struct iwl_channel_info *ch_info;
4433 unsigned long flags;
4434 int ret = 0;
4435
4436 mutex_lock(&priv->mutex);
4437 IWL_DEBUG_MAC80211("enter to channel %d\n", conf->channel->hw_value);
4438
4439 priv->add_radiotap = !!(conf->flags & IEEE80211_CONF_RADIOTAP);
4440
4441 if (!iwl_is_ready(priv)) {
4442 IWL_DEBUG_MAC80211("leave - not ready\n");
4443 ret = -EIO;
4444 goto out;
4445 }
4446
4447 if (unlikely(!priv->cfg->mod_params->disable_hw_scan &&
4448 test_bit(STATUS_SCANNING, &priv->status))) {
4449 IWL_DEBUG_MAC80211("leave - scanning\n");
4450 set_bit(STATUS_CONF_PENDING, &priv->status);
4451 mutex_unlock(&priv->mutex);
4452 return 0;
4453 }
4454
4455 spin_lock_irqsave(&priv->lock, flags);
4456
4457 ch_info = iwl_get_channel_info(priv, conf->channel->band,
4458 ieee80211_frequency_to_channel(conf->channel->center_freq));
4459 if (!is_channel_valid(ch_info)) {
4460 IWL_DEBUG_MAC80211("leave - invalid channel\n");
4461 spin_unlock_irqrestore(&priv->lock, flags);
4462 ret = -EINVAL;
4463 goto out;
4464 }
4465
4466 #ifdef CONFIG_IWL4965_HT
4467 /* if we are switching from ht to 2.4 clear flags
4468 * from any ht related info since 2.4 does not
4469 * support ht */
4470 if ((le16_to_cpu(priv->staging_rxon.channel) != conf->channel->hw_value)
4471 #ifdef IEEE80211_CONF_CHANNEL_SWITCH
4472 && !(conf->flags & IEEE80211_CONF_CHANNEL_SWITCH)
4473 #endif
4474 )
4475 priv->staging_rxon.flags = 0;
4476 #endif /* CONFIG_IWL4965_HT */
4477
4478 iwl_set_rxon_channel(priv, conf->channel->band,
4479 ieee80211_frequency_to_channel(conf->channel->center_freq));
4480
4481 iwl4965_set_flags_for_phymode(priv, conf->channel->band);
4482
4483 /* The list of supported rates and rate mask can be different
4484 * for each band; since the band may have changed, reset
4485 * the rate mask to what mac80211 lists */
4486 iwl4965_set_rate(priv);
4487
4488 spin_unlock_irqrestore(&priv->lock, flags);
4489
4490 #ifdef IEEE80211_CONF_CHANNEL_SWITCH
4491 if (conf->flags & IEEE80211_CONF_CHANNEL_SWITCH) {
4492 iwl4965_hw_channel_switch(priv, conf->channel);
4493 goto out;
4494 }
4495 #endif
4496
4497 if (priv->cfg->ops->lib->radio_kill_sw)
4498 priv->cfg->ops->lib->radio_kill_sw(priv, !conf->radio_enabled);
4499
4500 if (!conf->radio_enabled) {
4501 IWL_DEBUG_MAC80211("leave - radio disabled\n");
4502 goto out;
4503 }
4504
4505 if (iwl_is_rfkill(priv)) {
4506 IWL_DEBUG_MAC80211("leave - RF kill\n");
4507 ret = -EIO;
4508 goto out;
4509 }
4510
4511 iwl4965_set_rate(priv);
4512
4513 if (memcmp(&priv->active_rxon,
4514 &priv->staging_rxon, sizeof(priv->staging_rxon)))
4515 iwl4965_commit_rxon(priv);
4516 else
4517 IWL_DEBUG_INFO("No re-sending same RXON configuration.\n");
4518
4519 IWL_DEBUG_MAC80211("leave\n");
4520
4521 out:
4522 clear_bit(STATUS_CONF_PENDING, &priv->status);
4523 mutex_unlock(&priv->mutex);
4524 return ret;
4525 }
4526
4527 static void iwl4965_config_ap(struct iwl_priv *priv)
4528 {
4529 int ret = 0;
4530
4531 if (test_bit(STATUS_EXIT_PENDING, &priv->status))
4532 return;
4533
4534 /* The following should be done only at AP bring up */
4535 if ((priv->active_rxon.filter_flags & RXON_FILTER_ASSOC_MSK) == 0) {
4536
4537 /* RXON - unassoc (to set timing command) */
4538 priv->staging_rxon.filter_flags &= ~RXON_FILTER_ASSOC_MSK;
4539 iwl4965_commit_rxon(priv);
4540
4541 /* RXON Timing */
4542 memset(&priv->rxon_timing, 0, sizeof(struct iwl4965_rxon_time_cmd));
4543 iwl4965_setup_rxon_timing(priv);
4544 ret = iwl_send_cmd_pdu(priv, REPLY_RXON_TIMING,
4545 sizeof(priv->rxon_timing), &priv->rxon_timing);
4546 if (ret)
4547 IWL_WARNING("REPLY_RXON_TIMING failed - "
4548 "Attempting to continue.\n");
4549
4550 iwl_set_rxon_chain(priv);
4551
4552 /* FIXME: what should be the assoc_id for AP? */
4553 priv->staging_rxon.assoc_id = cpu_to_le16(priv->assoc_id);
4554 if (priv->assoc_capability & WLAN_CAPABILITY_SHORT_PREAMBLE)
4555 priv->staging_rxon.flags |=
4556 RXON_FLG_SHORT_PREAMBLE_MSK;
4557 else
4558 priv->staging_rxon.flags &=
4559 ~RXON_FLG_SHORT_PREAMBLE_MSK;
4560
4561 if (priv->staging_rxon.flags & RXON_FLG_BAND_24G_MSK) {
4562 if (priv->assoc_capability &
4563 WLAN_CAPABILITY_SHORT_SLOT_TIME)
4564 priv->staging_rxon.flags |=
4565 RXON_FLG_SHORT_SLOT_MSK;
4566 else
4567 priv->staging_rxon.flags &=
4568 ~RXON_FLG_SHORT_SLOT_MSK;
4569
4570 if (priv->iw_mode == IEEE80211_IF_TYPE_IBSS)
4571 priv->staging_rxon.flags &=
4572 ~RXON_FLG_SHORT_SLOT_MSK;
4573 }
4574 /* restore RXON assoc */
4575 priv->staging_rxon.filter_flags |= RXON_FILTER_ASSOC_MSK;
4576 iwl4965_commit_rxon(priv);
4577 iwl4965_activate_qos(priv, 1);
4578 iwl_rxon_add_station(priv, iwl_bcast_addr, 0);
4579 }
4580 iwl4965_send_beacon_cmd(priv);
4581
4582 /* FIXME - we need to add code here to detect a totally new
4583 * configuration, reset the AP, unassoc, rxon timing, assoc,
4584 * clear sta table, add BCAST sta... */
4585 }
4586
4587 static int iwl4965_mac_config_interface(struct ieee80211_hw *hw,
4588 struct ieee80211_vif *vif,
4589 struct ieee80211_if_conf *conf)
4590 {
4591 struct iwl_priv *priv = hw->priv;
4592 DECLARE_MAC_BUF(mac);
4593 unsigned long flags;
4594 int rc;
4595
4596 if (conf == NULL)
4597 return -EIO;
4598
4599 if (priv->vif != vif) {
4600 IWL_DEBUG_MAC80211("leave - priv->vif != vif\n");
4601 return 0;
4602 }
4603
4604 if ((priv->iw_mode == IEEE80211_IF_TYPE_AP) &&
4605 (!conf->beacon || !conf->ssid_len)) {
4606 IWL_DEBUG_MAC80211
4607 ("Leaving in AP mode because HostAPD is not ready.\n");
4608 return 0;
4609 }
4610
4611 if (!iwl_is_alive(priv))
4612 return -EAGAIN;
4613
4614 mutex_lock(&priv->mutex);
4615
4616 if (conf->bssid)
4617 IWL_DEBUG_MAC80211("bssid: %s\n",
4618 print_mac(mac, conf->bssid));
4619
4620 /*
4621 * very dubious code was here; the probe filtering flag is never set:
4622 *
4623 if (unlikely(test_bit(STATUS_SCANNING, &priv->status)) &&
4624 !(priv->hw->flags & IEEE80211_HW_NO_PROBE_FILTERING)) {
4625 */
4626
4627 if (priv->iw_mode == IEEE80211_IF_TYPE_AP) {
4628 if (!conf->bssid) {
4629 conf->bssid = priv->mac_addr;
4630 memcpy(priv->bssid, priv->mac_addr, ETH_ALEN);
4631 IWL_DEBUG_MAC80211("bssid was set to: %s\n",
4632 print_mac(mac, conf->bssid));
4633 }
4634 if (priv->ibss_beacon)
4635 dev_kfree_skb(priv->ibss_beacon);
4636
4637 priv->ibss_beacon = conf->beacon;
4638 }
4639
4640 if (iwl_is_rfkill(priv))
4641 goto done;
4642
4643 if (conf->bssid && !is_zero_ether_addr(conf->bssid) &&
4644 !is_multicast_ether_addr(conf->bssid)) {
4645 /* If there is currently a HW scan going on in the background
4646 * then we need to cancel it else the RXON below will fail. */
4647 if (iwl4965_scan_cancel_timeout(priv, 100)) {
4648 IWL_WARNING("Aborted scan still in progress "
4649 "after 100ms\n");
4650 IWL_DEBUG_MAC80211("leaving - scan abort failed.\n");
4651 mutex_unlock(&priv->mutex);
4652 return -EAGAIN;
4653 }
4654 memcpy(priv->staging_rxon.bssid_addr, conf->bssid, ETH_ALEN);
4655
4656 /* TODO: Audit driver for usage of these members and see
4657 * if mac80211 deprecates them (priv->bssid looks like it
4658 * shouldn't be there, but I haven't scanned the IBSS code
4659 * to verify) - jpk */
4660 memcpy(priv->bssid, conf->bssid, ETH_ALEN);
4661
4662 if (priv->iw_mode == IEEE80211_IF_TYPE_AP)
4663 iwl4965_config_ap(priv);
4664 else {
4665 rc = iwl4965_commit_rxon(priv);
4666 if ((priv->iw_mode == IEEE80211_IF_TYPE_STA) && rc)
4667 iwl_rxon_add_station(
4668 priv, priv->active_rxon.bssid_addr, 1);
4669 }
4670
4671 } else {
4672 iwl4965_scan_cancel_timeout(priv, 100);
4673 priv->staging_rxon.filter_flags &= ~RXON_FILTER_ASSOC_MSK;
4674 iwl4965_commit_rxon(priv);
4675 }
4676
4677 done:
4678 spin_lock_irqsave(&priv->lock, flags);
4679 if (!conf->ssid_len)
4680 memset(priv->essid, 0, IW_ESSID_MAX_SIZE);
4681 else
4682 memcpy(priv->essid, conf->ssid, conf->ssid_len);
4683
4684 priv->essid_len = conf->ssid_len;
4685 spin_unlock_irqrestore(&priv->lock, flags);
4686
4687 IWL_DEBUG_MAC80211("leave\n");
4688 mutex_unlock(&priv->mutex);
4689
4690 return 0;
4691 }
4692
4693 static void iwl4965_configure_filter(struct ieee80211_hw *hw,
4694 unsigned int changed_flags,
4695 unsigned int *total_flags,
4696 int mc_count, struct dev_addr_list *mc_list)
4697 {
4698 /*
4699 * XXX: dummy
4700 * see also iwl4965_connection_init_rx_config
4701 */
4702 struct iwl_priv *priv = hw->priv;
4703 int new_flags = 0;
4704 if (changed_flags & (FIF_PROMISC_IN_BSS | FIF_OTHER_BSS)) {
4705 if (*total_flags & (FIF_PROMISC_IN_BSS | FIF_OTHER_BSS)) {
4706 IWL_DEBUG_MAC80211("Enter: type %d (0x%x, 0x%x)\n",
4707 IEEE80211_IF_TYPE_MNTR,
4708 changed_flags, *total_flags);
4709 /* queue work 'cuz mac80211 is holding a lock which
4710 * prevents us from issuing (synchronous) f/w cmds */
4711 queue_work(priv->workqueue, &priv->set_monitor);
4712 new_flags &= FIF_PROMISC_IN_BSS |
4713 FIF_OTHER_BSS |
4714 FIF_ALLMULTI;
4715 }
4716 }
4717 *total_flags = new_flags;
4718 }
4719
4720 static void iwl4965_mac_remove_interface(struct ieee80211_hw *hw,
4721 struct ieee80211_if_init_conf *conf)
4722 {
4723 struct iwl_priv *priv = hw->priv;
4724
4725 IWL_DEBUG_MAC80211("enter\n");
4726
4727 mutex_lock(&priv->mutex);
4728
4729 if (iwl_is_ready_rf(priv)) {
4730 iwl4965_scan_cancel_timeout(priv, 100);
4731 cancel_delayed_work(&priv->post_associate);
4732 priv->staging_rxon.filter_flags &= ~RXON_FILTER_ASSOC_MSK;
4733 iwl4965_commit_rxon(priv);
4734 }
4735 if (priv->vif == conf->vif) {
4736 priv->vif = NULL;
4737 memset(priv->bssid, 0, ETH_ALEN);
4738 memset(priv->essid, 0, IW_ESSID_MAX_SIZE);
4739 priv->essid_len = 0;
4740 }
4741 mutex_unlock(&priv->mutex);
4742
4743 IWL_DEBUG_MAC80211("leave\n");
4744
4745 }
4746
4747 #define IWL_DELAY_NEXT_SCAN_AFTER_ASSOC (HZ*6)
4748 static void iwl4965_bss_info_changed(struct ieee80211_hw *hw,
4749 struct ieee80211_vif *vif,
4750 struct ieee80211_bss_conf *bss_conf,
4751 u32 changes)
4752 {
4753 struct iwl_priv *priv = hw->priv;
4754
4755 IWL_DEBUG_MAC80211("changes = 0x%X\n", changes);
4756
4757 if (changes & BSS_CHANGED_ERP_PREAMBLE) {
4758 IWL_DEBUG_MAC80211("ERP_PREAMBLE %d\n",
4759 bss_conf->use_short_preamble);
4760 if (bss_conf->use_short_preamble)
4761 priv->staging_rxon.flags |= RXON_FLG_SHORT_PREAMBLE_MSK;
4762 else
4763 priv->staging_rxon.flags &= ~RXON_FLG_SHORT_PREAMBLE_MSK;
4764 }
4765
4766 if (changes & BSS_CHANGED_ERP_CTS_PROT) {
4767 IWL_DEBUG_MAC80211("ERP_CTS %d\n", bss_conf->use_cts_prot);
4768 if (bss_conf->use_cts_prot && (priv->band != IEEE80211_BAND_5GHZ))
4769 priv->staging_rxon.flags |= RXON_FLG_TGG_PROTECT_MSK;
4770 else
4771 priv->staging_rxon.flags &= ~RXON_FLG_TGG_PROTECT_MSK;
4772 }
4773
4774 if (changes & BSS_CHANGED_HT) {
4775 IWL_DEBUG_MAC80211("HT %d\n", bss_conf->assoc_ht);
4776 iwl4965_ht_conf(priv, bss_conf);
4777 iwl_set_rxon_chain(priv);
4778 }
4779
4780 if (changes & BSS_CHANGED_ASSOC) {
4781 IWL_DEBUG_MAC80211("ASSOC %d\n", bss_conf->assoc);
4782 /* This should never happen as this function should
4783 * never be called from interrupt context. */
4784 if (WARN_ON_ONCE(in_interrupt()))
4785 return;
4786 if (bss_conf->assoc) {
4787 priv->assoc_id = bss_conf->aid;
4788 priv->beacon_int = bss_conf->beacon_int;
4789 priv->timestamp = bss_conf->timestamp;
4790 priv->assoc_capability = bss_conf->assoc_capability;
4791 priv->next_scan_jiffies = jiffies +
4792 IWL_DELAY_NEXT_SCAN_AFTER_ASSOC;
4793 mutex_lock(&priv->mutex);
4794 iwl4965_post_associate(priv);
4795 mutex_unlock(&priv->mutex);
4796 } else {
4797 priv->assoc_id = 0;
4798 IWL_DEBUG_MAC80211("DISASSOC %d\n", bss_conf->assoc);
4799 }
4800 } else if (changes && iwl_is_associated(priv) && priv->assoc_id) {
4801 IWL_DEBUG_MAC80211("Associated Changes %d\n", changes);
4802 iwl_send_rxon_assoc(priv);
4803 }
4804
4805 }
4806
4807 static int iwl4965_mac_hw_scan(struct ieee80211_hw *hw, u8 *ssid, size_t len)
4808 {
4809 int rc = 0;
4810 unsigned long flags;
4811 struct iwl_priv *priv = hw->priv;
4812
4813 IWL_DEBUG_MAC80211("enter\n");
4814
4815 mutex_lock(&priv->mutex);
4816 spin_lock_irqsave(&priv->lock, flags);
4817
4818 if (!iwl_is_ready_rf(priv)) {
4819 rc = -EIO;
4820 IWL_DEBUG_MAC80211("leave - not ready or exit pending\n");
4821 goto out_unlock;
4822 }
4823
4824 if (priv->iw_mode == IEEE80211_IF_TYPE_AP) { /* APs don't scan */
4825 rc = -EIO;
4826 IWL_ERROR("ERROR: APs don't scan\n");
4827 goto out_unlock;
4828 }
4829
4830 /* we don't schedule scan within next_scan_jiffies period */
4831 if (priv->next_scan_jiffies &&
4832 time_after(priv->next_scan_jiffies, jiffies)) {
4833 rc = -EAGAIN;
4834 goto out_unlock;
4835 }
4836 /* if we just finished scan ask for delay */
4837 if (priv->last_scan_jiffies && time_after(priv->last_scan_jiffies +
4838 IWL_DELAY_NEXT_SCAN, jiffies)) {
4839 rc = -EAGAIN;
4840 goto out_unlock;
4841 }
4842 if (len) {
4843 IWL_DEBUG_SCAN("direct scan for %s [%d]\n ",
4844 iwl4965_escape_essid(ssid, len), (int)len);
4845
4846 priv->one_direct_scan = 1;
4847 priv->direct_ssid_len = (u8)
4848 min((u8) len, (u8) IW_ESSID_MAX_SIZE);
4849 memcpy(priv->direct_ssid, ssid, priv->direct_ssid_len);
4850 } else
4851 priv->one_direct_scan = 0;
4852
4853 rc = iwl4965_scan_initiate(priv);
4854
4855 IWL_DEBUG_MAC80211("leave\n");
4856
4857 out_unlock:
4858 spin_unlock_irqrestore(&priv->lock, flags);
4859 mutex_unlock(&priv->mutex);
4860
4861 return rc;
4862 }
4863
4864 static void iwl4965_mac_update_tkip_key(struct ieee80211_hw *hw,
4865 struct ieee80211_key_conf *keyconf, const u8 *addr,
4866 u32 iv32, u16 *phase1key)
4867 {
4868 struct iwl_priv *priv = hw->priv;
4869 u8 sta_id = IWL_INVALID_STATION;
4870 unsigned long flags;
4871 __le16 key_flags = 0;
4872 int i;
4873 DECLARE_MAC_BUF(mac);
4874
4875 IWL_DEBUG_MAC80211("enter\n");
4876
4877 sta_id = iwl_find_station(priv, addr);
4878 if (sta_id == IWL_INVALID_STATION) {
4879 IWL_DEBUG_MAC80211("leave - %s not in station map.\n",
4880 print_mac(mac, addr));
4881 return;
4882 }
4883
4884 iwl4965_scan_cancel_timeout(priv, 100);
4885
4886 key_flags |= (STA_KEY_FLG_TKIP | STA_KEY_FLG_MAP_KEY_MSK);
4887 key_flags |= cpu_to_le16(keyconf->keyidx << STA_KEY_FLG_KEYID_POS);
4888 key_flags &= ~STA_KEY_FLG_INVALID;
4889
4890 if (sta_id == priv->hw_params.bcast_sta_id)
4891 key_flags |= STA_KEY_MULTICAST_MSK;
4892
4893 spin_lock_irqsave(&priv->sta_lock, flags);
4894
4895 priv->stations[sta_id].sta.key.key_flags = key_flags;
4896 priv->stations[sta_id].sta.key.tkip_rx_tsc_byte2 = (u8) iv32;
4897
4898 for (i = 0; i < 5; i++)
4899 priv->stations[sta_id].sta.key.tkip_rx_ttak[i] =
4900 cpu_to_le16(phase1key[i]);
4901
4902 priv->stations[sta_id].sta.sta.modify_mask = STA_MODIFY_KEY_MASK;
4903 priv->stations[sta_id].sta.mode = STA_CONTROL_MODIFY_MSK;
4904
4905 iwl_send_add_sta(priv, &priv->stations[sta_id].sta, CMD_ASYNC);
4906
4907 spin_unlock_irqrestore(&priv->sta_lock, flags);
4908
4909 IWL_DEBUG_MAC80211("leave\n");
4910 }
4911
4912 static int iwl4965_mac_set_key(struct ieee80211_hw *hw, enum set_key_cmd cmd,
4913 const u8 *local_addr, const u8 *addr,
4914 struct ieee80211_key_conf *key)
4915 {
4916 struct iwl_priv *priv = hw->priv;
4917 DECLARE_MAC_BUF(mac);
4918 int ret = 0;
4919 u8 sta_id = IWL_INVALID_STATION;
4920 u8 is_default_wep_key = 0;
4921
4922 IWL_DEBUG_MAC80211("enter\n");
4923
4924 if (priv->hw_params.sw_crypto) {
4925 IWL_DEBUG_MAC80211("leave - hwcrypto disabled\n");
4926 return -EOPNOTSUPP;
4927 }
4928
4929 if (is_zero_ether_addr(addr))
4930 /* only support pairwise keys */
4931 return -EOPNOTSUPP;
4932
4933 sta_id = iwl_find_station(priv, addr);
4934 if (sta_id == IWL_INVALID_STATION) {
4935 IWL_DEBUG_MAC80211("leave - %s not in station map.\n",
4936 print_mac(mac, addr));
4937 return -EINVAL;
4938
4939 }
4940
4941 mutex_lock(&priv->mutex);
4942 iwl4965_scan_cancel_timeout(priv, 100);
4943 mutex_unlock(&priv->mutex);
4944
4945 /* If we are getting WEP group key and we didn't receive any key mapping
4946 * so far, we are in legacy wep mode (group key only), otherwise we are
4947 * in 1X mode.
4948 * In legacy wep mode, we use another host command to the uCode */
4949 if (key->alg == ALG_WEP && sta_id == priv->hw_params.bcast_sta_id &&
4950 priv->iw_mode != IEEE80211_IF_TYPE_AP) {
4951 if (cmd == SET_KEY)
4952 is_default_wep_key = !priv->key_mapping_key;
4953 else
4954 is_default_wep_key = priv->default_wep_key;
4955 }
4956
4957 switch (cmd) {
4958 case SET_KEY:
4959 if (is_default_wep_key)
4960 ret = iwl_set_default_wep_key(priv, key);
4961 else
4962 ret = iwl_set_dynamic_key(priv, key, sta_id);
4963
4964 IWL_DEBUG_MAC80211("enable hwcrypto key\n");
4965 break;
4966 case DISABLE_KEY:
4967 if (is_default_wep_key)
4968 ret = iwl_remove_default_wep_key(priv, key);
4969 else
4970 ret = iwl_remove_dynamic_key(priv, key, sta_id);
4971
4972 IWL_DEBUG_MAC80211("disable hwcrypto key\n");
4973 break;
4974 default:
4975 ret = -EINVAL;
4976 }
4977
4978 IWL_DEBUG_MAC80211("leave\n");
4979
4980 return ret;
4981 }
4982
4983 static int iwl4965_mac_conf_tx(struct ieee80211_hw *hw, u16 queue,
4984 const struct ieee80211_tx_queue_params *params)
4985 {
4986 struct iwl_priv *priv = hw->priv;
4987 unsigned long flags;
4988 int q;
4989
4990 IWL_DEBUG_MAC80211("enter\n");
4991
4992 if (!iwl_is_ready_rf(priv)) {
4993 IWL_DEBUG_MAC80211("leave - RF not ready\n");
4994 return -EIO;
4995 }
4996
4997 if (queue >= AC_NUM) {
4998 IWL_DEBUG_MAC80211("leave - queue >= AC_NUM %d\n", queue);
4999 return 0;
5000 }
5001
5002 if (!priv->qos_data.qos_enable) {
5003 priv->qos_data.qos_active = 0;
5004 IWL_DEBUG_MAC80211("leave - qos not enabled\n");
5005 return 0;
5006 }
5007 q = AC_NUM - 1 - queue;
5008
5009 spin_lock_irqsave(&priv->lock, flags);
5010
5011 priv->qos_data.def_qos_parm.ac[q].cw_min = cpu_to_le16(params->cw_min);
5012 priv->qos_data.def_qos_parm.ac[q].cw_max = cpu_to_le16(params->cw_max);
5013 priv->qos_data.def_qos_parm.ac[q].aifsn = params->aifs;
5014 priv->qos_data.def_qos_parm.ac[q].edca_txop =
5015 cpu_to_le16((params->txop * 32));
5016
5017 priv->qos_data.def_qos_parm.ac[q].reserved1 = 0;
5018 priv->qos_data.qos_active = 1;
5019
5020 spin_unlock_irqrestore(&priv->lock, flags);
5021
5022 mutex_lock(&priv->mutex);
5023 if (priv->iw_mode == IEEE80211_IF_TYPE_AP)
5024 iwl4965_activate_qos(priv, 1);
5025 else if (priv->assoc_id && iwl_is_associated(priv))
5026 iwl4965_activate_qos(priv, 0);
5027
5028 mutex_unlock(&priv->mutex);
5029
5030 IWL_DEBUG_MAC80211("leave\n");
5031 return 0;
5032 }
5033
5034 static int iwl4965_mac_get_tx_stats(struct ieee80211_hw *hw,
5035 struct ieee80211_tx_queue_stats *stats)
5036 {
5037 struct iwl_priv *priv = hw->priv;
5038 int i, avail;
5039 struct iwl_tx_queue *txq;
5040 struct iwl_queue *q;
5041 unsigned long flags;
5042
5043 IWL_DEBUG_MAC80211("enter\n");
5044
5045 if (!iwl_is_ready_rf(priv)) {
5046 IWL_DEBUG_MAC80211("leave - RF not ready\n");
5047 return -EIO;
5048 }
5049
5050 spin_lock_irqsave(&priv->lock, flags);
5051
5052 for (i = 0; i < AC_NUM; i++) {
5053 txq = &priv->txq[i];
5054 q = &txq->q;
5055 avail = iwl_queue_space(q);
5056
5057 stats[i].len = q->n_window - avail;
5058 stats[i].limit = q->n_window - q->high_mark;
5059 stats[i].count = q->n_window;
5060
5061 }
5062 spin_unlock_irqrestore(&priv->lock, flags);
5063
5064 IWL_DEBUG_MAC80211("leave\n");
5065
5066 return 0;
5067 }
5068
5069 static int iwl4965_mac_get_stats(struct ieee80211_hw *hw,
5070 struct ieee80211_low_level_stats *stats)
5071 {
5072 struct iwl_priv *priv = hw->priv;
5073
5074 priv = hw->priv;
5075 IWL_DEBUG_MAC80211("enter\n");
5076 IWL_DEBUG_MAC80211("leave\n");
5077
5078 return 0;
5079 }
5080
5081 static u64 iwl4965_mac_get_tsf(struct ieee80211_hw *hw)
5082 {
5083 struct iwl_priv *priv;
5084
5085 priv = hw->priv;
5086 IWL_DEBUG_MAC80211("enter\n");
5087 IWL_DEBUG_MAC80211("leave\n");
5088
5089 return 0;
5090 }
5091
5092 static void iwl4965_mac_reset_tsf(struct ieee80211_hw *hw)
5093 {
5094 struct iwl_priv *priv = hw->priv;
5095 unsigned long flags;
5096
5097 mutex_lock(&priv->mutex);
5098 IWL_DEBUG_MAC80211("enter\n");
5099
5100 priv->lq_mngr.lq_ready = 0;
5101 #ifdef CONFIG_IWL4965_HT
5102 spin_lock_irqsave(&priv->lock, flags);
5103 memset(&priv->current_ht_config, 0, sizeof(struct iwl_ht_info));
5104 spin_unlock_irqrestore(&priv->lock, flags);
5105 #endif /* CONFIG_IWL4965_HT */
5106
5107 iwl_reset_qos(priv);
5108
5109 cancel_delayed_work(&priv->post_associate);
5110
5111 spin_lock_irqsave(&priv->lock, flags);
5112 priv->assoc_id = 0;
5113 priv->assoc_capability = 0;
5114 priv->assoc_station_added = 0;
5115
5116 /* new association get rid of ibss beacon skb */
5117 if (priv->ibss_beacon)
5118 dev_kfree_skb(priv->ibss_beacon);
5119
5120 priv->ibss_beacon = NULL;
5121
5122 priv->beacon_int = priv->hw->conf.beacon_int;
5123 priv->timestamp = 0;
5124 if ((priv->iw_mode == IEEE80211_IF_TYPE_STA))
5125 priv->beacon_int = 0;
5126
5127 spin_unlock_irqrestore(&priv->lock, flags);
5128
5129 if (!iwl_is_ready_rf(priv)) {
5130 IWL_DEBUG_MAC80211("leave - not ready\n");
5131 mutex_unlock(&priv->mutex);
5132 return;
5133 }
5134
5135 /* we are restarting association process
5136 * clear RXON_FILTER_ASSOC_MSK bit
5137 */
5138 if (priv->iw_mode != IEEE80211_IF_TYPE_AP) {
5139 iwl4965_scan_cancel_timeout(priv, 100);
5140 priv->staging_rxon.filter_flags &= ~RXON_FILTER_ASSOC_MSK;
5141 iwl4965_commit_rxon(priv);
5142 }
5143
5144 iwl_power_update_mode(priv, 0);
5145
5146 /* Per mac80211.h: This is only used in IBSS mode... */
5147 if (priv->iw_mode != IEEE80211_IF_TYPE_IBSS) {
5148
5149 IWL_DEBUG_MAC80211("leave - not in IBSS\n");
5150 mutex_unlock(&priv->mutex);
5151 return;
5152 }
5153
5154 iwl4965_set_rate(priv);
5155
5156 mutex_unlock(&priv->mutex);
5157
5158 IWL_DEBUG_MAC80211("leave\n");
5159 }
5160
5161 static int iwl4965_mac_beacon_update(struct ieee80211_hw *hw, struct sk_buff *skb,
5162 struct ieee80211_tx_control *control)
5163 {
5164 struct iwl_priv *priv = hw->priv;
5165 unsigned long flags;
5166
5167 mutex_lock(&priv->mutex);
5168 IWL_DEBUG_MAC80211("enter\n");
5169
5170 if (!iwl_is_ready_rf(priv)) {
5171 IWL_DEBUG_MAC80211("leave - RF not ready\n");
5172 mutex_unlock(&priv->mutex);
5173 return -EIO;
5174 }
5175
5176 if (priv->iw_mode != IEEE80211_IF_TYPE_IBSS) {
5177 IWL_DEBUG_MAC80211("leave - not IBSS\n");
5178 mutex_unlock(&priv->mutex);
5179 return -EIO;
5180 }
5181
5182 spin_lock_irqsave(&priv->lock, flags);
5183
5184 if (priv->ibss_beacon)
5185 dev_kfree_skb(priv->ibss_beacon);
5186
5187 priv->ibss_beacon = skb;
5188
5189 priv->assoc_id = 0;
5190
5191 IWL_DEBUG_MAC80211("leave\n");
5192 spin_unlock_irqrestore(&priv->lock, flags);
5193
5194 iwl_reset_qos(priv);
5195
5196 queue_work(priv->workqueue, &priv->post_associate.work);
5197
5198 mutex_unlock(&priv->mutex);
5199
5200 return 0;
5201 }
5202
5203 /*****************************************************************************
5204 *
5205 * sysfs attributes
5206 *
5207 *****************************************************************************/
5208
5209 #ifdef CONFIG_IWLWIFI_DEBUG
5210
5211 /*
5212 * The following adds a new attribute to the sysfs representation
5213 * of this device driver (i.e. a new file in /sys/bus/pci/drivers/iwl/)
5214 * used for controlling the debug level.
5215 *
5216 * See the level definitions in iwl for details.
5217 */
5218
5219 static ssize_t show_debug_level(struct device *d,
5220 struct device_attribute *attr, char *buf)
5221 {
5222 struct iwl_priv *priv = d->driver_data;
5223
5224 return sprintf(buf, "0x%08X\n", priv->debug_level);
5225 }
5226 static ssize_t store_debug_level(struct device *d,
5227 struct device_attribute *attr,
5228 const char *buf, size_t count)
5229 {
5230 struct iwl_priv *priv = d->driver_data;
5231 char *p = (char *)buf;
5232 u32 val;
5233
5234 val = simple_strtoul(p, &p, 0);
5235 if (p == buf)
5236 printk(KERN_INFO DRV_NAME
5237 ": %s is not in hex or decimal form.\n", buf);
5238 else
5239 priv->debug_level = val;
5240
5241 return strnlen(buf, count);
5242 }
5243
5244 static DEVICE_ATTR(debug_level, S_IWUSR | S_IRUGO,
5245 show_debug_level, store_debug_level);
5246
5247
5248 #endif /* CONFIG_IWLWIFI_DEBUG */
5249
5250
5251 static ssize_t show_version(struct device *d,
5252 struct device_attribute *attr, char *buf)
5253 {
5254 struct iwl_priv *priv = d->driver_data;
5255 struct iwl4965_alive_resp *palive = &priv->card_alive;
5256
5257 if (palive->is_valid)
5258 return sprintf(buf, "fw version: 0x%01X.0x%01X.0x%01X.0x%01X\n"
5259 "fw type: 0x%01X 0x%01X\n",
5260 palive->ucode_major, palive->ucode_minor,
5261 palive->sw_rev[0], palive->sw_rev[1],
5262 palive->ver_type, palive->ver_subtype);
5263
5264 else
5265 return sprintf(buf, "fw not loaded\n");
5266 }
5267
5268 static DEVICE_ATTR(version, S_IWUSR | S_IRUGO, show_version, NULL);
5269
5270 static ssize_t show_temperature(struct device *d,
5271 struct device_attribute *attr, char *buf)
5272 {
5273 struct iwl_priv *priv = (struct iwl_priv *)d->driver_data;
5274
5275 if (!iwl_is_alive(priv))
5276 return -EAGAIN;
5277
5278 return sprintf(buf, "%d\n", iwl4965_hw_get_temperature(priv));
5279 }
5280
5281 static DEVICE_ATTR(temperature, S_IRUGO, show_temperature, NULL);
5282
5283 static ssize_t show_rs_window(struct device *d,
5284 struct device_attribute *attr,
5285 char *buf)
5286 {
5287 struct iwl_priv *priv = d->driver_data;
5288 return iwl4965_fill_rs_info(priv->hw, buf, IWL_AP_ID);
5289 }
5290 static DEVICE_ATTR(rs_window, S_IRUGO, show_rs_window, NULL);
5291
5292 static ssize_t show_tx_power(struct device *d,
5293 struct device_attribute *attr, char *buf)
5294 {
5295 struct iwl_priv *priv = (struct iwl_priv *)d->driver_data;
5296 return sprintf(buf, "%d\n", priv->user_txpower_limit);
5297 }
5298
5299 static ssize_t store_tx_power(struct device *d,
5300 struct device_attribute *attr,
5301 const char *buf, size_t count)
5302 {
5303 struct iwl_priv *priv = (struct iwl_priv *)d->driver_data;
5304 char *p = (char *)buf;
5305 u32 val;
5306
5307 val = simple_strtoul(p, &p, 10);
5308 if (p == buf)
5309 printk(KERN_INFO DRV_NAME
5310 ": %s is not in decimal form.\n", buf);
5311 else
5312 iwl4965_hw_reg_set_txpower(priv, val);
5313
5314 return count;
5315 }
5316
5317 static DEVICE_ATTR(tx_power, S_IWUSR | S_IRUGO, show_tx_power, store_tx_power);
5318
5319 static ssize_t show_flags(struct device *d,
5320 struct device_attribute *attr, char *buf)
5321 {
5322 struct iwl_priv *priv = (struct iwl_priv *)d->driver_data;
5323
5324 return sprintf(buf, "0x%04X\n", priv->active_rxon.flags);
5325 }
5326
5327 static ssize_t store_flags(struct device *d,
5328 struct device_attribute *attr,
5329 const char *buf, size_t count)
5330 {
5331 struct iwl_priv *priv = (struct iwl_priv *)d->driver_data;
5332 u32 flags = simple_strtoul(buf, NULL, 0);
5333
5334 mutex_lock(&priv->mutex);
5335 if (le32_to_cpu(priv->staging_rxon.flags) != flags) {
5336 /* Cancel any currently running scans... */
5337 if (iwl4965_scan_cancel_timeout(priv, 100))
5338 IWL_WARNING("Could not cancel scan.\n");
5339 else {
5340 IWL_DEBUG_INFO("Committing rxon.flags = 0x%04X\n",
5341 flags);
5342 priv->staging_rxon.flags = cpu_to_le32(flags);
5343 iwl4965_commit_rxon(priv);
5344 }
5345 }
5346 mutex_unlock(&priv->mutex);
5347
5348 return count;
5349 }
5350
5351 static DEVICE_ATTR(flags, S_IWUSR | S_IRUGO, show_flags, store_flags);
5352
5353 static ssize_t show_filter_flags(struct device *d,
5354 struct device_attribute *attr, char *buf)
5355 {
5356 struct iwl_priv *priv = (struct iwl_priv *)d->driver_data;
5357
5358 return sprintf(buf, "0x%04X\n",
5359 le32_to_cpu(priv->active_rxon.filter_flags));
5360 }
5361
5362 static ssize_t store_filter_flags(struct device *d,
5363 struct device_attribute *attr,
5364 const char *buf, size_t count)
5365 {
5366 struct iwl_priv *priv = (struct iwl_priv *)d->driver_data;
5367 u32 filter_flags = simple_strtoul(buf, NULL, 0);
5368
5369 mutex_lock(&priv->mutex);
5370 if (le32_to_cpu(priv->staging_rxon.filter_flags) != filter_flags) {
5371 /* Cancel any currently running scans... */
5372 if (iwl4965_scan_cancel_timeout(priv, 100))
5373 IWL_WARNING("Could not cancel scan.\n");
5374 else {
5375 IWL_DEBUG_INFO("Committing rxon.filter_flags = "
5376 "0x%04X\n", filter_flags);
5377 priv->staging_rxon.filter_flags =
5378 cpu_to_le32(filter_flags);
5379 iwl4965_commit_rxon(priv);
5380 }
5381 }
5382 mutex_unlock(&priv->mutex);
5383
5384 return count;
5385 }
5386
5387 static DEVICE_ATTR(filter_flags, S_IWUSR | S_IRUGO, show_filter_flags,
5388 store_filter_flags);
5389
5390 #ifdef CONFIG_IWL4965_SPECTRUM_MEASUREMENT
5391
5392 static ssize_t show_measurement(struct device *d,
5393 struct device_attribute *attr, char *buf)
5394 {
5395 struct iwl_priv *priv = dev_get_drvdata(d);
5396 struct iwl4965_spectrum_notification measure_report;
5397 u32 size = sizeof(measure_report), len = 0, ofs = 0;
5398 u8 *data = (u8 *) & measure_report;
5399 unsigned long flags;
5400
5401 spin_lock_irqsave(&priv->lock, flags);
5402 if (!(priv->measurement_status & MEASUREMENT_READY)) {
5403 spin_unlock_irqrestore(&priv->lock, flags);
5404 return 0;
5405 }
5406 memcpy(&measure_report, &priv->measure_report, size);
5407 priv->measurement_status = 0;
5408 spin_unlock_irqrestore(&priv->lock, flags);
5409
5410 while (size && (PAGE_SIZE - len)) {
5411 hex_dump_to_buffer(data + ofs, size, 16, 1, buf + len,
5412 PAGE_SIZE - len, 1);
5413 len = strlen(buf);
5414 if (PAGE_SIZE - len)
5415 buf[len++] = '\n';
5416
5417 ofs += 16;
5418 size -= min(size, 16U);
5419 }
5420
5421 return len;
5422 }
5423
5424 static ssize_t store_measurement(struct device *d,
5425 struct device_attribute *attr,
5426 const char *buf, size_t count)
5427 {
5428 struct iwl_priv *priv = dev_get_drvdata(d);
5429 struct ieee80211_measurement_params params = {
5430 .channel = le16_to_cpu(priv->active_rxon.channel),
5431 .start_time = cpu_to_le64(priv->last_tsf),
5432 .duration = cpu_to_le16(1),
5433 };
5434 u8 type = IWL_MEASURE_BASIC;
5435 u8 buffer[32];
5436 u8 channel;
5437
5438 if (count) {
5439 char *p = buffer;
5440 strncpy(buffer, buf, min(sizeof(buffer), count));
5441 channel = simple_strtoul(p, NULL, 0);
5442 if (channel)
5443 params.channel = channel;
5444
5445 p = buffer;
5446 while (*p && *p != ' ')
5447 p++;
5448 if (*p)
5449 type = simple_strtoul(p + 1, NULL, 0);
5450 }
5451
5452 IWL_DEBUG_INFO("Invoking measurement of type %d on "
5453 "channel %d (for '%s')\n", type, params.channel, buf);
5454 iwl4965_get_measurement(priv, &params, type);
5455
5456 return count;
5457 }
5458
5459 static DEVICE_ATTR(measurement, S_IRUSR | S_IWUSR,
5460 show_measurement, store_measurement);
5461 #endif /* CONFIG_IWL4965_SPECTRUM_MEASUREMENT */
5462
5463 static ssize_t store_retry_rate(struct device *d,
5464 struct device_attribute *attr,
5465 const char *buf, size_t count)
5466 {
5467 struct iwl_priv *priv = dev_get_drvdata(d);
5468
5469 priv->retry_rate = simple_strtoul(buf, NULL, 0);
5470 if (priv->retry_rate <= 0)
5471 priv->retry_rate = 1;
5472
5473 return count;
5474 }
5475
5476 static ssize_t show_retry_rate(struct device *d,
5477 struct device_attribute *attr, char *buf)
5478 {
5479 struct iwl_priv *priv = dev_get_drvdata(d);
5480 return sprintf(buf, "%d", priv->retry_rate);
5481 }
5482
5483 static DEVICE_ATTR(retry_rate, S_IWUSR | S_IRUSR, show_retry_rate,
5484 store_retry_rate);
5485
5486 static ssize_t store_power_level(struct device *d,
5487 struct device_attribute *attr,
5488 const char *buf, size_t count)
5489 {
5490 struct iwl_priv *priv = dev_get_drvdata(d);
5491 int rc;
5492 int mode;
5493
5494 mode = simple_strtoul(buf, NULL, 0);
5495 mutex_lock(&priv->mutex);
5496
5497 if (!iwl_is_ready(priv)) {
5498 rc = -EAGAIN;
5499 goto out;
5500 }
5501
5502 rc = iwl_power_set_user_mode(priv, mode);
5503 if (rc) {
5504 IWL_DEBUG_MAC80211("failed setting power mode.\n");
5505 goto out;
5506 }
5507 rc = count;
5508
5509 out:
5510 mutex_unlock(&priv->mutex);
5511 return rc;
5512 }
5513
5514 #define MAX_WX_STRING 80
5515
5516 /* Values are in microsecond */
5517 static const s32 timeout_duration[] = {
5518 350000,
5519 250000,
5520 75000,
5521 37000,
5522 25000,
5523 };
5524 static const s32 period_duration[] = {
5525 400000,
5526 700000,
5527 1000000,
5528 1000000,
5529 1000000
5530 };
5531
5532 static ssize_t show_power_level(struct device *d,
5533 struct device_attribute *attr, char *buf)
5534 {
5535 struct iwl_priv *priv = dev_get_drvdata(d);
5536 int level = priv->power_data.power_mode;
5537 char *p = buf;
5538
5539 p += sprintf(p, "%d ", level);
5540 switch (level) {
5541 case IWL_POWER_MODE_CAM:
5542 case IWL_POWER_AC:
5543 p += sprintf(p, "(AC)");
5544 break;
5545 case IWL_POWER_BATTERY:
5546 p += sprintf(p, "(BATTERY)");
5547 break;
5548 default:
5549 p += sprintf(p,
5550 "(Timeout %dms, Period %dms)",
5551 timeout_duration[level - 1] / 1000,
5552 period_duration[level - 1] / 1000);
5553 }
5554 /*
5555 if (!(priv->power_mode & IWL_POWER_ENABLED))
5556 p += sprintf(p, " OFF\n");
5557 else
5558 p += sprintf(p, " \n");
5559 */
5560 p += sprintf(p, " \n");
5561 return (p - buf + 1);
5562 }
5563
5564 static DEVICE_ATTR(power_level, S_IWUSR | S_IRUSR, show_power_level,
5565 store_power_level);
5566
5567 static ssize_t show_channels(struct device *d,
5568 struct device_attribute *attr, char *buf)
5569 {
5570 /* all this shit doesn't belong into sysfs anyway */
5571 return 0;
5572 }
5573
5574 static DEVICE_ATTR(channels, S_IRUSR, show_channels, NULL);
5575
5576 static ssize_t show_statistics(struct device *d,
5577 struct device_attribute *attr, char *buf)
5578 {
5579 struct iwl_priv *priv = dev_get_drvdata(d);
5580 u32 size = sizeof(struct iwl4965_notif_statistics);
5581 u32 len = 0, ofs = 0;
5582 u8 *data = (u8 *) & priv->statistics;
5583 int rc = 0;
5584
5585 if (!iwl_is_alive(priv))
5586 return -EAGAIN;
5587
5588 mutex_lock(&priv->mutex);
5589 rc = iwl_send_statistics_request(priv, 0);
5590 mutex_unlock(&priv->mutex);
5591
5592 if (rc) {
5593 len = sprintf(buf,
5594 "Error sending statistics request: 0x%08X\n", rc);
5595 return len;
5596 }
5597
5598 while (size && (PAGE_SIZE - len)) {
5599 hex_dump_to_buffer(data + ofs, size, 16, 1, buf + len,
5600 PAGE_SIZE - len, 1);
5601 len = strlen(buf);
5602 if (PAGE_SIZE - len)
5603 buf[len++] = '\n';
5604
5605 ofs += 16;
5606 size -= min(size, 16U);
5607 }
5608
5609 return len;
5610 }
5611
5612 static DEVICE_ATTR(statistics, S_IRUGO, show_statistics, NULL);
5613
5614 static ssize_t show_status(struct device *d,
5615 struct device_attribute *attr, char *buf)
5616 {
5617 struct iwl_priv *priv = (struct iwl_priv *)d->driver_data;
5618 if (!iwl_is_alive(priv))
5619 return -EAGAIN;
5620 return sprintf(buf, "0x%08x\n", (int)priv->status);
5621 }
5622
5623 static DEVICE_ATTR(status, S_IRUGO, show_status, NULL);
5624
5625 static ssize_t dump_error_log(struct device *d,
5626 struct device_attribute *attr,
5627 const char *buf, size_t count)
5628 {
5629 char *p = (char *)buf;
5630
5631 if (p[0] == '1')
5632 iwl4965_dump_nic_error_log((struct iwl_priv *)d->driver_data);
5633
5634 return strnlen(buf, count);
5635 }
5636
5637 static DEVICE_ATTR(dump_errors, S_IWUSR, NULL, dump_error_log);
5638
5639 static ssize_t dump_event_log(struct device *d,
5640 struct device_attribute *attr,
5641 const char *buf, size_t count)
5642 {
5643 char *p = (char *)buf;
5644
5645 if (p[0] == '1')
5646 iwl4965_dump_nic_event_log((struct iwl_priv *)d->driver_data);
5647
5648 return strnlen(buf, count);
5649 }
5650
5651 static DEVICE_ATTR(dump_events, S_IWUSR, NULL, dump_event_log);
5652
5653 /*****************************************************************************
5654 *
5655 * driver setup and teardown
5656 *
5657 *****************************************************************************/
5658
5659 static void iwl4965_setup_deferred_work(struct iwl_priv *priv)
5660 {
5661 priv->workqueue = create_workqueue(DRV_NAME);
5662
5663 init_waitqueue_head(&priv->wait_command_queue);
5664
5665 INIT_WORK(&priv->up, iwl4965_bg_up);
5666 INIT_WORK(&priv->restart, iwl4965_bg_restart);
5667 INIT_WORK(&priv->rx_replenish, iwl4965_bg_rx_replenish);
5668 INIT_WORK(&priv->scan_completed, iwl4965_bg_scan_completed);
5669 INIT_WORK(&priv->request_scan, iwl4965_bg_request_scan);
5670 INIT_WORK(&priv->abort_scan, iwl4965_bg_abort_scan);
5671 INIT_WORK(&priv->rf_kill, iwl4965_bg_rf_kill);
5672 INIT_WORK(&priv->beacon_update, iwl4965_bg_beacon_update);
5673 INIT_WORK(&priv->set_monitor, iwl4965_bg_set_monitor);
5674 INIT_DELAYED_WORK(&priv->post_associate, iwl4965_bg_post_associate);
5675 INIT_DELAYED_WORK(&priv->init_alive_start, iwl4965_bg_init_alive_start);
5676 INIT_DELAYED_WORK(&priv->alive_start, iwl4965_bg_alive_start);
5677 INIT_DELAYED_WORK(&priv->scan_check, iwl4965_bg_scan_check);
5678
5679 iwl4965_hw_setup_deferred_work(priv);
5680
5681 tasklet_init(&priv->irq_tasklet, (void (*)(unsigned long))
5682 iwl4965_irq_tasklet, (unsigned long)priv);
5683 }
5684
5685 static void iwl4965_cancel_deferred_work(struct iwl_priv *priv)
5686 {
5687 iwl4965_hw_cancel_deferred_work(priv);
5688
5689 cancel_delayed_work_sync(&priv->init_alive_start);
5690 cancel_delayed_work(&priv->scan_check);
5691 cancel_delayed_work(&priv->alive_start);
5692 cancel_delayed_work(&priv->post_associate);
5693 cancel_work_sync(&priv->beacon_update);
5694 }
5695
5696 static struct attribute *iwl4965_sysfs_entries[] = {
5697 &dev_attr_channels.attr,
5698 &dev_attr_dump_errors.attr,
5699 &dev_attr_dump_events.attr,
5700 &dev_attr_flags.attr,
5701 &dev_attr_filter_flags.attr,
5702 #ifdef CONFIG_IWL4965_SPECTRUM_MEASUREMENT
5703 &dev_attr_measurement.attr,
5704 #endif
5705 &dev_attr_power_level.attr,
5706 &dev_attr_retry_rate.attr,
5707 &dev_attr_rs_window.attr,
5708 &dev_attr_statistics.attr,
5709 &dev_attr_status.attr,
5710 &dev_attr_temperature.attr,
5711 &dev_attr_tx_power.attr,
5712 #ifdef CONFIG_IWLWIFI_DEBUG
5713 &dev_attr_debug_level.attr,
5714 #endif
5715 &dev_attr_version.attr,
5716
5717 NULL
5718 };
5719
5720 static struct attribute_group iwl4965_attribute_group = {
5721 .name = NULL, /* put in device directory */
5722 .attrs = iwl4965_sysfs_entries,
5723 };
5724
5725 static struct ieee80211_ops iwl4965_hw_ops = {
5726 .tx = iwl4965_mac_tx,
5727 .start = iwl4965_mac_start,
5728 .stop = iwl4965_mac_stop,
5729 .add_interface = iwl4965_mac_add_interface,
5730 .remove_interface = iwl4965_mac_remove_interface,
5731 .config = iwl4965_mac_config,
5732 .config_interface = iwl4965_mac_config_interface,
5733 .configure_filter = iwl4965_configure_filter,
5734 .set_key = iwl4965_mac_set_key,
5735 .update_tkip_key = iwl4965_mac_update_tkip_key,
5736 .get_stats = iwl4965_mac_get_stats,
5737 .get_tx_stats = iwl4965_mac_get_tx_stats,
5738 .conf_tx = iwl4965_mac_conf_tx,
5739 .get_tsf = iwl4965_mac_get_tsf,
5740 .reset_tsf = iwl4965_mac_reset_tsf,
5741 .beacon_update = iwl4965_mac_beacon_update,
5742 .bss_info_changed = iwl4965_bss_info_changed,
5743 #ifdef CONFIG_IWL4965_HT
5744 .ampdu_action = iwl4965_mac_ampdu_action,
5745 #endif /* CONFIG_IWL4965_HT */
5746 .hw_scan = iwl4965_mac_hw_scan
5747 };
5748
5749 static int iwl4965_pci_probe(struct pci_dev *pdev, const struct pci_device_id *ent)
5750 {
5751 int err = 0;
5752 struct iwl_priv *priv;
5753 struct ieee80211_hw *hw;
5754 struct iwl_cfg *cfg = (struct iwl_cfg *)(ent->driver_data);
5755 unsigned long flags;
5756 DECLARE_MAC_BUF(mac);
5757
5758 /************************
5759 * 1. Allocating HW data
5760 ************************/
5761
5762 /* Disabling hardware scan means that mac80211 will perform scans
5763 * "the hard way", rather than using device's scan. */
5764 if (cfg->mod_params->disable_hw_scan) {
5765 if (cfg->mod_params->debug & IWL_DL_INFO)
5766 dev_printk(KERN_DEBUG, &(pdev->dev),
5767 "Disabling hw_scan\n");
5768 iwl4965_hw_ops.hw_scan = NULL;
5769 }
5770
5771 hw = iwl_alloc_all(cfg, &iwl4965_hw_ops);
5772 if (!hw) {
5773 err = -ENOMEM;
5774 goto out;
5775 }
5776 priv = hw->priv;
5777 /* At this point both hw and priv are allocated. */
5778
5779 SET_IEEE80211_DEV(hw, &pdev->dev);
5780
5781 IWL_DEBUG_INFO("*** LOAD DRIVER ***\n");
5782 priv->cfg = cfg;
5783 priv->pci_dev = pdev;
5784
5785 #ifdef CONFIG_IWLWIFI_DEBUG
5786 priv->debug_level = priv->cfg->mod_params->debug;
5787 atomic_set(&priv->restrict_refcnt, 0);
5788 #endif
5789
5790 /**************************
5791 * 2. Initializing PCI bus
5792 **************************/
5793 if (pci_enable_device(pdev)) {
5794 err = -ENODEV;
5795 goto out_ieee80211_free_hw;
5796 }
5797
5798 pci_set_master(pdev);
5799
5800 err = pci_set_dma_mask(pdev, DMA_64BIT_MASK);
5801 if (!err)
5802 err = pci_set_consistent_dma_mask(pdev, DMA_64BIT_MASK);
5803 if (err) {
5804 err = pci_set_dma_mask(pdev, DMA_32BIT_MASK);
5805 if (!err)
5806 err = pci_set_consistent_dma_mask(pdev, DMA_32BIT_MASK);
5807 /* both attempts failed: */
5808 if (err) {
5809 printk(KERN_WARNING "%s: No suitable DMA available.\n",
5810 DRV_NAME);
5811 goto out_pci_disable_device;
5812 }
5813 }
5814
5815 err = pci_request_regions(pdev, DRV_NAME);
5816 if (err)
5817 goto out_pci_disable_device;
5818
5819 pci_set_drvdata(pdev, priv);
5820
5821 /* We disable the RETRY_TIMEOUT register (0x41) to keep
5822 * PCI Tx retries from interfering with C3 CPU state */
5823 pci_write_config_byte(pdev, 0x41, 0x00);
5824
5825 /***********************
5826 * 3. Read REV register
5827 ***********************/
5828 priv->hw_base = pci_iomap(pdev, 0, 0);
5829 if (!priv->hw_base) {
5830 err = -ENODEV;
5831 goto out_pci_release_regions;
5832 }
5833
5834 IWL_DEBUG_INFO("pci_resource_len = 0x%08llx\n",
5835 (unsigned long long) pci_resource_len(pdev, 0));
5836 IWL_DEBUG_INFO("pci_resource_base = %p\n", priv->hw_base);
5837
5838 iwl_hw_detect(priv);
5839 printk(KERN_INFO DRV_NAME
5840 ": Detected Intel Wireless WiFi Link %s REV=0x%X\n",
5841 priv->cfg->name, priv->hw_rev);
5842
5843 /* amp init */
5844 err = priv->cfg->ops->lib->apm_ops.init(priv);
5845 if (err < 0) {
5846 IWL_DEBUG_INFO("Failed to init APMG\n");
5847 goto out_iounmap;
5848 }
5849 /*****************
5850 * 4. Read EEPROM
5851 *****************/
5852 /* Read the EEPROM */
5853 err = iwl_eeprom_init(priv);
5854 if (err) {
5855 IWL_ERROR("Unable to init EEPROM\n");
5856 goto out_iounmap;
5857 }
5858 err = iwl_eeprom_check_version(priv);
5859 if (err)
5860 goto out_iounmap;
5861
5862 /* extract MAC Address */
5863 iwl_eeprom_get_mac(priv, priv->mac_addr);
5864 IWL_DEBUG_INFO("MAC address: %s\n", print_mac(mac, priv->mac_addr));
5865 SET_IEEE80211_PERM_ADDR(priv->hw, priv->mac_addr);
5866
5867 /************************
5868 * 5. Setup HW constants
5869 ************************/
5870 /* Device-specific setup */
5871 if (priv->cfg->ops->lib->set_hw_params(priv)) {
5872 IWL_ERROR("failed to set hw parameters\n");
5873 goto out_free_eeprom;
5874 }
5875
5876 /*******************
5877 * 6. Setup hw/priv
5878 *******************/
5879
5880 err = iwl_setup(priv);
5881 if (err)
5882 goto out_free_eeprom;
5883 /* At this point both hw and priv are initialized. */
5884
5885 /**********************************
5886 * 7. Initialize module parameters
5887 **********************************/
5888
5889 /* Disable radio (SW RF KILL) via parameter when loading driver */
5890 if (priv->cfg->mod_params->disable) {
5891 set_bit(STATUS_RF_KILL_SW, &priv->status);
5892 IWL_DEBUG_INFO("Radio disabled.\n");
5893 }
5894
5895 if (priv->cfg->mod_params->enable_qos)
5896 priv->qos_data.qos_enable = 1;
5897
5898 /********************
5899 * 8. Setup services
5900 ********************/
5901 spin_lock_irqsave(&priv->lock, flags);
5902 iwl4965_disable_interrupts(priv);
5903 spin_unlock_irqrestore(&priv->lock, flags);
5904
5905 err = sysfs_create_group(&pdev->dev.kobj, &iwl4965_attribute_group);
5906 if (err) {
5907 IWL_ERROR("failed to create sysfs device attributes\n");
5908 goto out_free_eeprom;
5909 }
5910
5911 err = iwl_dbgfs_register(priv, DRV_NAME);
5912 if (err) {
5913 IWL_ERROR("failed to create debugfs files\n");
5914 goto out_remove_sysfs;
5915 }
5916
5917 iwl4965_setup_deferred_work(priv);
5918 iwl4965_setup_rx_handlers(priv);
5919
5920 /********************
5921 * 9. Conclude
5922 ********************/
5923 pci_save_state(pdev);
5924 pci_disable_device(pdev);
5925
5926 /* notify iwlcore to init */
5927 iwlcore_low_level_notify(priv, IWLCORE_INIT_EVT);
5928 return 0;
5929
5930 out_remove_sysfs:
5931 sysfs_remove_group(&pdev->dev.kobj, &iwl4965_attribute_group);
5932 out_free_eeprom:
5933 iwl_eeprom_free(priv);
5934 out_iounmap:
5935 pci_iounmap(pdev, priv->hw_base);
5936 out_pci_release_regions:
5937 pci_release_regions(pdev);
5938 pci_set_drvdata(pdev, NULL);
5939 out_pci_disable_device:
5940 pci_disable_device(pdev);
5941 out_ieee80211_free_hw:
5942 ieee80211_free_hw(priv->hw);
5943 out:
5944 return err;
5945 }
5946
5947 static void __devexit iwl4965_pci_remove(struct pci_dev *pdev)
5948 {
5949 struct iwl_priv *priv = pci_get_drvdata(pdev);
5950 struct list_head *p, *q;
5951 int i;
5952 unsigned long flags;
5953
5954 if (!priv)
5955 return;
5956
5957 IWL_DEBUG_INFO("*** UNLOAD DRIVER ***\n");
5958
5959 if (priv->mac80211_registered) {
5960 ieee80211_unregister_hw(priv->hw);
5961 priv->mac80211_registered = 0;
5962 }
5963
5964 set_bit(STATUS_EXIT_PENDING, &priv->status);
5965
5966 iwl4965_down(priv);
5967
5968 /* make sure we flush any pending irq or
5969 * tasklet for the driver
5970 */
5971 spin_lock_irqsave(&priv->lock, flags);
5972 iwl4965_disable_interrupts(priv);
5973 spin_unlock_irqrestore(&priv->lock, flags);
5974
5975 iwl_synchronize_irq(priv);
5976
5977 /* Free MAC hash list for ADHOC */
5978 for (i = 0; i < IWL_IBSS_MAC_HASH_SIZE; i++) {
5979 list_for_each_safe(p, q, &priv->ibss_mac_hash[i]) {
5980 list_del(p);
5981 kfree(list_entry(p, struct iwl4965_ibss_seq, list));
5982 }
5983 }
5984
5985 iwlcore_low_level_notify(priv, IWLCORE_REMOVE_EVT);
5986 iwl_dbgfs_unregister(priv);
5987 sysfs_remove_group(&pdev->dev.kobj, &iwl4965_attribute_group);
5988
5989 iwl4965_dealloc_ucode_pci(priv);
5990
5991 if (priv->rxq.bd)
5992 iwl_rx_queue_free(priv, &priv->rxq);
5993 iwl_hw_txq_ctx_free(priv);
5994
5995 iwlcore_clear_stations_table(priv);
5996 iwl_eeprom_free(priv);
5997
5998
5999 /*netif_stop_queue(dev); */
6000 flush_workqueue(priv->workqueue);
6001
6002 /* ieee80211_unregister_hw calls iwl4965_mac_stop, which flushes
6003 * priv->workqueue... so we can't take down the workqueue
6004 * until now... */
6005 destroy_workqueue(priv->workqueue);
6006 priv->workqueue = NULL;
6007
6008 pci_iounmap(pdev, priv->hw_base);
6009 pci_release_regions(pdev);
6010 pci_disable_device(pdev);
6011 pci_set_drvdata(pdev, NULL);
6012
6013 iwl_free_channel_map(priv);
6014 iwlcore_free_geos(priv);
6015
6016 if (priv->ibss_beacon)
6017 dev_kfree_skb(priv->ibss_beacon);
6018
6019 ieee80211_free_hw(priv->hw);
6020 }
6021
6022 #ifdef CONFIG_PM
6023
6024 static int iwl4965_pci_suspend(struct pci_dev *pdev, pm_message_t state)
6025 {
6026 struct iwl_priv *priv = pci_get_drvdata(pdev);
6027
6028 if (priv->is_open) {
6029 set_bit(STATUS_IN_SUSPEND, &priv->status);
6030 iwl4965_mac_stop(priv->hw);
6031 priv->is_open = 1;
6032 }
6033
6034 pci_set_power_state(pdev, PCI_D3hot);
6035
6036 return 0;
6037 }
6038
6039 static int iwl4965_pci_resume(struct pci_dev *pdev)
6040 {
6041 struct iwl_priv *priv = pci_get_drvdata(pdev);
6042
6043 pci_set_power_state(pdev, PCI_D0);
6044
6045 if (priv->is_open)
6046 iwl4965_mac_start(priv->hw);
6047
6048 clear_bit(STATUS_IN_SUSPEND, &priv->status);
6049 return 0;
6050 }
6051
6052 #endif /* CONFIG_PM */
6053
6054 /*****************************************************************************
6055 *
6056 * driver and module entry point
6057 *
6058 *****************************************************************************/
6059
6060 /* Hardware specific file defines the PCI IDs table for that hardware module */
6061 static struct pci_device_id iwl_hw_card_ids[] = {
6062 {IWL_PCI_DEVICE(0x4229, PCI_ANY_ID, iwl4965_agn_cfg)},
6063 {IWL_PCI_DEVICE(0x4230, PCI_ANY_ID, iwl4965_agn_cfg)},
6064 #ifdef CONFIG_IWL5000
6065 {IWL_PCI_DEVICE(0x4235, PCI_ANY_ID, iwl5300_agn_cfg)},
6066 {IWL_PCI_DEVICE(0x4232, PCI_ANY_ID, iwl5100_agn_cfg)},
6067 {IWL_PCI_DEVICE(0x423A, PCI_ANY_ID, iwl5350_agn_cfg)},
6068 #endif /* CONFIG_IWL5000 */
6069 {0}
6070 };
6071 MODULE_DEVICE_TABLE(pci, iwl_hw_card_ids);
6072
6073 static struct pci_driver iwl_driver = {
6074 .name = DRV_NAME,
6075 .id_table = iwl_hw_card_ids,
6076 .probe = iwl4965_pci_probe,
6077 .remove = __devexit_p(iwl4965_pci_remove),
6078 #ifdef CONFIG_PM
6079 .suspend = iwl4965_pci_suspend,
6080 .resume = iwl4965_pci_resume,
6081 #endif
6082 };
6083
6084 static int __init iwl4965_init(void)
6085 {
6086
6087 int ret;
6088 printk(KERN_INFO DRV_NAME ": " DRV_DESCRIPTION ", " DRV_VERSION "\n");
6089 printk(KERN_INFO DRV_NAME ": " DRV_COPYRIGHT "\n");
6090
6091 ret = iwl4965_rate_control_register();
6092 if (ret) {
6093 IWL_ERROR("Unable to register rate control algorithm: %d\n", ret);
6094 return ret;
6095 }
6096
6097 ret = pci_register_driver(&iwl_driver);
6098 if (ret) {
6099 IWL_ERROR("Unable to initialize PCI module\n");
6100 goto error_register;
6101 }
6102
6103 return ret;
6104
6105 error_register:
6106 iwl4965_rate_control_unregister();
6107 return ret;
6108 }
6109
6110 static void __exit iwl4965_exit(void)
6111 {
6112 pci_unregister_driver(&iwl_driver);
6113 iwl4965_rate_control_unregister();
6114 }
6115
6116 module_exit(iwl4965_exit);
6117 module_init(iwl4965_init);
Linux kernel - Deliverables
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